Low-temperature processing device for lock catch of stone-plastic composite floor

Abstract

A low-temperature processing device for lock catches of stone-plastic composite floors comprises a cutter shaft which is a double-end milling cutter shaft; the milling cutter assembly comprises a first milling cutter set and a second milling cutter set, the first milling cutter set and the second milling cutter set are oppositely arranged and located on the two sides of the target machining floor respectively, each of the first milling cutter set and the second milling cutter set is composed of nine kinds of vertical shaft combined milling cutters, and the vertical shaft combined milling cutters are arranged on different cutter shafts respectively; and the low-temperature injection assembly is arranged on the cutter shaft, and the low-temperature injection assembly is arranged on one side of the vertical shaft combined milling cutter. A plurality of cutter shafts and a plurality of stations are arranged, the stone-plastic composite floor is machined through the vertical shaft combined milling cutters in different shapes, the single-time cutting machining amount can be reduced, and brittle failure of stone-plastic materials of a base material layer caused by the too large cutting amount is avoided; and the vertical shaft combined milling cutters with different shapes can enable the two ends of the target processed floor to form lock catches capable of being spliced, so that the processed target floor can be stably spliced with each other.

Description

Technical Field

[0001] The invention relates to the field of floor processing, in particular to a low-temperature processing device for locking buckles of a stone-plastic composite floor. Background Art

[0002] Stone plastic composite flooring is a new type of composite flooring composed of a balancing layer of ethylene-vinyl acetate copolymer, a base layer of stone plastic board, a decorative layer of veneer and a wear-resistant layer of aluminum oxide wear-resistant paper. It has the advantages of being environmentally friendly, affordable, good processing performance, high strength, easy installation and recyclable. It is widely used in floor decoration in homes, businesses, stadiums and other places. At present, in the process of locking buckle processing of stone plastic composite floor, excessively high cutting temperature will cause plastic deformation of stone plastic, and stone plastic particles will adhere to the surface of milling cutter teeth to form built-up edge, which will then cause the milling cutter processing profile to change, affecting the processing accuracy of the lock buckle of the stone plastic composite floor, causing problems such as joint separation, joint bulge and uneven joint level when assembling the stone plastic composite floor; in addition, the stone plastic floor lock buckle processing method is mostly used in the current processing of stone plastic composite floor, ignoring the multi-layer structure characteristics of stone plastic composite floor, and the melting points of materials in different layers are different, which will cause the material to melt during cutting, making the processing surface of ethylene-vinyl acetate copolymer in the balance layer of the stone plastic composite floor uneven and the wood hair and fiber tearing problems in the decorative layer of the wood veneer, affecting the assembly accuracy of the stone plastic composite floor, so it is very necessary to propose a low-temperature processing device for locking buckles of stone plastic composite floor. Summary of the invention

[0003] The purpose of the present invention is to provide a low-temperature processing device for locking stone plastic composite flooring, so that when processing the stone plastic composite flooring, the surfaces of the balancing layer and the decorative layer can be made smoother, the generation of built-up edge can be prevented, the processing quality and splicing quality can be improved, so as to solve the existing technical defects and unattainable technical requirements.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a low-temperature processing device for locking buckles of stone-plastic composite floor, comprising:

[0005] A cutter shaft, wherein the cutter shaft is a double-ended milling cutter shaft;

[0006] A milling cutter assembly, the milling cutter assembly comprising a first milling cutter group and a second milling cutter group, the first milling cutter group and the second milling cutter group are arranged opposite to each other and are respectively located on both sides of the target processing floor, and the first milling cutter group and the second milling cutter group are each composed of 9 vertical axis combined milling cutters, and the vertical axis combined milling cutters are respectively arranged on different cutter axes;

[0007] A low temperature spraying assembly is provided on the cutter shaft, and the low temperature spraying assembly is provided on one side of the vertical axis combined milling cutter.

[0008] Preferably, the first milling cutter group includes: a first vertical axis combined milling cutter, a third vertical axis combined milling cutter, a fifth vertical axis combined milling cutter, a seventh vertical axis combined milling cutter, a ninth vertical axis combined milling cutter, an eleventh vertical axis combined milling cutter, a thirteenth vertical axis combined milling cutter, a fifteenth vertical axis combined milling cutter and a seventeenth vertical axis combined milling cutter, and the vertical axis combined milling cutters in the first milling cutter group are arranged in sequence;

[0009] The second milling cutter group includes: a second vertical axis combined milling cutter, a fourth vertical axis combined milling cutter, a sixth vertical axis combined milling cutter, an eighth vertical axis combined milling cutter, a tenth vertical axis combined milling cutter, a twelfth vertical axis combined milling cutter, a fourteenth vertical axis combined milling cutter, a sixteenth vertical axis combined milling cutter and an eighteenth vertical axis combined milling cutter, and the vertical axis combined milling cutters in the second milling cutter group are arranged in sequence;

[0010] The vertical axis combined milling cutters in the first milling cutter group and the second milling cutter group are sequentially arranged on two sides of the target processing floor opposite to each other.

[0011] The vertical axis combination milling cutters in the first milling cutter group and the second milling cutter group are arranged opposite to each other in sequence, and there is a floor placement area between the first milling cutter group and the second milling cutter group, and the floor placement area is used to store the target processing wooden boards, that is, it can be understood that the vertical axis combination milling cutters in the first milling cutter group and the second milling cutter group are arranged opposite to each other in sequence on both sides of the target processing floor.

[0012] The tool axes of the vertical axis combined milling cutters in the first milling cutter group and the second milling cutter group are arranged perpendicular to the target processing floor;

[0013] The cutter axes of the vertical axis combined milling cutters of the first milling cutter group are arranged on the same horizontal line, which is the first horizontal line, and the cutter axes of the vertical axis combined milling cutters of the second milling cutter group are arranged on another horizontal line, which is the second horizontal line, and the first horizontal line and the second horizontal line are parallel to each other, and the distance between the two is the sum of the board width of the target processing floor and the diameter of the forming milling cutter;

[0014] The horizontal line where the tool axes of the first vertical axis combination milling cutter and the second vertical axis combination milling cutter are set is the third horizontal line, and the third horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the third vertical axis combination milling cutter and the fourth vertical axis combination milling cutter are set is the fourth horizontal line, and the fourth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the fifth vertical axis combination milling cutter and the sixth vertical axis combination milling cutter are set is the fifth horizontal line, and the fifth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the seventh vertical axis combination milling cutter and the eighth vertical axis combination milling cutter are set is the sixth horizontal line, and the sixth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the ninth vertical axis combination milling cutter and the tenth vertical axis combination milling cutter are set is the seventh horizontal line. horizontal line, the seventh horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the eleventh vertical axis combination milling cutter and the twelfth vertical axis combination milling cutter are set is the eighth horizontal line, and the eighth horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the thirteenth vertical axis combination milling cutter and the fourteenth vertical axis combination milling cutter are set is the ninth horizontal line, and the ninth horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the fifteenth vertical axis combination milling cutter and the sixteenth vertical axis combination milling cutter are set is the tenth horizontal line, and the tenth horizontal line is perpendicular to the first horizontal line and the second horizontal line, and the horizontal line where the tool axes of the seventeenth vertical axis combination milling cutter and the eighteenth vertical axis combination milling cutter are set is the eleventh horizontal line, and the eleventh horizontal line is perpendicular to the first horizontal line and the second horizontal line.

[0015] Preferably, the first vertical axis combined milling cutter is composed of three stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected by positioning pins, so as to process the locking connection surfaces of different layers of the composite floor at the same time;

[0016] The third vertical axis combined milling cutter, the sixth vertical axis combined milling cutter, the ninth vertical axis combined milling cutter, the eleventh vertical axis combined milling cutter, the twelfth vertical axis combined milling cutter, the thirteenth vertical axis combined milling cutter and the fourteenth vertical axis combined milling cutter are all composed of one forming milling cutter;

[0017] The second vertical axis combination milling cutter, the fourth vertical axis combination milling cutter, the fifth vertical axis combination milling cutter, the seventh vertical axis combination milling cutter, the eighth vertical axis combination milling cutter, the tenth vertical axis combination milling cutter, the fifteenth vertical axis combination milling cutter, the sixteenth vertical axis combination milling cutter, the seventeenth vertical axis combination milling cutter and the eighteenth vertical axis combination milling cutter are each composed of two stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected by locating pins, so as to simultaneously process the locking connection surfaces of different layers of the composite floor.

[0018] Preferably, the forming milling cutter on the first vertical axis combined milling cutter includes a first forming milling cutter, a second forming milling cutter and a third forming milling cutter, the first forming milling cutter, the second forming milling cutter and the third forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the first forming milling cutter at least include: surface A1, surface A2, surface A3, the surfaces A1, A2 and A3 are connected in sequence, the surfaces A1 and A3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface A2 is arranged between the surfaces A1 and A3, and the upper end of the surface A2 is connected to the surface A1 , the lower end of the cutter is inclined toward the direction close to the inside of the cutter tooth and extends downward to the surface A3, and the angle between the surface A2 and the surface A1 is 30 to 75 degrees; the cutter teeth on the second forming milling cutter at least include: surface A4, surface A5, surface A6, surface A7 and surface A8, the surfaces A4, A5, surface A6, surface A7 and surface A8 are connected in sequence, wherein the surfaces A4 and A8 are parallel to each other and serve as the upper end surface and the lower end surface of the cutter tooth respectively, the surfaces A5, surface A6 and surface A7 are connected in sequence and are arranged between the surfaces A4 and A8, the surfaces A5 and A7 are connected in sequence and are arranged between the surfaces A4 and A8, and the surfaces A5 and A7 are connected in sequence. A7 is perpendicular to surface A4, the upper end of surface A6 is connected to the lower end of surface A5, the lower end of surface A6 is inclined downward to extend away from the inside of the tooth to surface A7, and is connected to the upper end of surface A7, the angle between surface A6 and surface A5 is 105-150°; the tooth on the third forming milling cutter at least includes: surface A9, surface A10 and surface A11, the surface A9, surface A10 and surface A11 are connected in sequence, wherein surface A9 and surface A11 are parallel to each other, serving as the upper end surface and lower end surface of the tooth respectively, the surface A10 is arranged on surface A9 and A11, and the surface A10 is perpendicular to the surface A9; the surface A1, the surface A4 and the surface A9 are parallel to each other, the surface A7 and the surface A10 are located in the same vertical plane, the surface A2 is tightly against the surface A4, and the surface A8 is tightly against the surface A9, so that when the first vertical axis combined milling cutter cuts the target floor, the surface A2, the surface A5, the surface A6, the surface A7 and the surface A10 can leave cut surfaces that are sequentially connected end to end on the target floor, so as to complete the processing of the locking connection surfaces of different layers of the composite floor by the first vertical axis combined milling cutter;

[0019] The forming milling cutter on the second vertical axis combined milling cutter includes a fourth forming milling cutter and a fifth forming milling cutter, and the fourth forming milling cutter and the fifth forming milling cutter are stacked in sequence from top to bottom, and the teeth on the fourth forming milling cutter include: surface B1, surface B2 and surface B3, and the surfaces B1, B2 and B3 are connected in sequence, and the surfaces B1 and B3 are parallel to each other and serve as the upper end surface and lower end surface of the teeth respectively, and the surface B2 is arranged between the surfaces B1 and B3, and the upper end of the surface B2 is connected to the surface B1, and the lower end is inclined in the direction away from the center of the teeth and extends downward to the surface B3; the teeth on the fifth forming milling cutter include at least surfaces B4, B5, B6, B7, B8, B9, B10, Surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16, the surfaces B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16 are connected in sequence, the surface B4 and surface B16 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surfaces B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 are arranged between the surfaces B4 and B16, the upper end of the surface B5 is connected to the surface B4, and the lower end is inclined in the direction away from the center of the tooth and extends downward to the surface B6, the surfaces The lower end of B6 extends downwardly and obliquely away from the inside of the tooth to surface B7, which is perpendicular to surface B4, and the lower end of which extends to surface B8. The lower end of surface B8 extends downwardly and obliquely toward the inside of the tooth to surface B9, which is perpendicular to surface B4, and the lower end of surface B9 extends to surface B10. The lower end of surface B10 extends downwardly and obliquely away from the inside of the tooth to surface B11, which is perpendicular to surface B4, and the lower end of surface B11 extends to surface B12. The lower end of surface B12 extends downwardly and obliquely away from the center of the tooth to surface B13, and the lower end of surface B13 extends downwardly and obliquely away from the inside of the tooth to surface B14, which B14 is parallel to surface B4, one end of surface B14 away from B13 extends horizontally to surface B15 in a direction away from the inside of the cutter teeth, surface B15 is perpendicular to surface 4, and the lower end of surface B15 extends to surface B16, surface B1 and surface B4 are parallel to each other, and surface B3 and surface B4 are tightly abutted, so that when the second vertical axis combined milling cutter cuts the target floor, surface B2, surface B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, and surface B15 can leave cut surfaces connected end to end on the target floor, so that the second vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0020] In the present application, it needs to be further explained that the meaning of the surfaces on different milling cutters being tightly fitted in the present application is that they only serve as contact surfaces connecting the two milling cutters and do not participate in cutting. That is, it can be understood that in the present application, in the forming milling cutter composed of two or more milling cutters, the surfaces are tightly fitted, then the two surfaces completely cover each other, and the surfaces with a tightly fitted relationship are also completely covered, not exposed to the air, and do not participate in cutting, except for surface B4, that is, surface B3 only covers a portion of surface B4, and part of surface B4 participates in cutting.

[0021] The forming milling cutter on the third combined vertical axis milling cutter includes a sixth forming milling cutter, wherein the teeth on the sixth forming milling cutter at least include: surface D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10, the surface D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10 are connected in sequence, the surface D1 and the surface D10 are parallel to each other, respectively serving as the upper end surface and the lower end surface of the tooth, the surface D2 , surface D3, surface D4, surface D5, surface D6, surface D7, surface D8 and surface D9 are arranged between surface D1 and surface D10, the upper end of surface D2 is connected to surface D1, and the lower end is inclined downwardly extending to surface D3 in the direction away from the inside of the blade tooth, one end of surface D3 is connected to the lower end of surface D2, and the other end is inclined upwardly extending to surface D4 in the direction away from the inside of the blade tooth, the upper end of surface D4 is connected to surface D3, and the lower end is inclined downwardly extending to surface D5 in the direction away from the inside of the blade tooth, and the surface D2 is connected to the lower end of surface D2, and the lower end is inclined downwardly extending to surface D5 in the direction away from the inside of the blade tooth, and the surface D3 .... The surface D4 is parallel to the surface D5, the upper end of the surface D5 is connected to the surface D4, and the other end is inclined downwardly extending to the surface D6 in a direction away from the inside of the blade tooth. The upper end of the surface D6 is connected to the surface D5, and the lower end is inclined downwardly extending to the surface D7 in a direction away from the inside of the blade tooth. The surface D6 is parallel to the surface D4, the upper end of the surface D7 is connected to the surface D6, and the other end is inclined downwardly extending to the surface D8 in a direction away from the inside of the blade tooth. The upper end of the surface D8 is connected to the surface D7, and the other end is inclined downwardly extending to the surface D8 in a direction away from the inside of the blade tooth. Extending to surface D9, the upper end of surface D9 is connected to surface D8, and the other end is inclined downward and extends to surface D10 in a direction away from the inside of the cutter teeth, and surface D9 is perpendicular to surface D6, so that when the third vertical axis combined milling cutter cuts the target floor, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10 can leave cut surfaces connected end to end on the target floor, so that the third vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0022] The forming milling cutter on the fourth vertical axis combined milling cutter includes a seventh forming milling cutter and an eighth forming milling cutter, and the seventh forming milling cutter and the eighth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the seventh forming milling cutter at least include: surface E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7, and the surfaces E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7 are connected in sequence, and the surface E1 is parallel to the surface E7, and serves as the upper end surface and the lower end surface of the tooth, respectively. The surface E2, surface E3, surface E4, surface E5 and surface E6 are arranged between the surface E1 and the surface E7. The upper end of the surface E2 is connected to the surface E1, and the lower end extends downward to the surface E3, and the surface E2 is perpendicular to the surface E1. The upper end of the surface E3 is connected to the surface E2, and the lower end extends downward to the surface E4 in a direction away from the inside of the blade tooth. The upper end of the surface E4 is connected to the surface E3, and the lower end extends downward to the surface E5 in a direction away from the inside of the blade tooth. One end of the surface E5 is connected to the surface E4, and the other end The tooth on the eighth forming milling cutter at least comprises: a surface E8, a surface E9 and a surface E10, the surface E8, the surface E9 and the surface E10 are connected in sequence, the surface E8 and the surface E10 are parallel to each other, and serve as the upper end face and the lower end face of the tooth respectively, the surface E9 is arranged between the surface E8 and the surface E10, and the upper end of the surface E9 is connected to the surface E5. The surfaces E6 and E9 are connected, and the lower end thereof is inclined toward the direction close to the inside of the cutter teeth and extends downward to the surface E10. The inclination angles of the surfaces E6 and E9 are the same. The surfaces E1 and E10 are parallel to each other. The surfaces E7 and E8 are closely adjacent to each other, so that when the fourth vertical axis combined milling cutter cuts the target floor, the surfaces E2, E3, E4, E5, E6 and E9 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fourth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0023] The forming milling cutter on the fifth vertical axis combination milling cutter includes a ninth forming milling cutter and a tenth forming milling cutter, and the ninth forming milling cutter and the tenth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the ninth forming milling cutter at least include: a surface F1, a surface F2 and a surface F3, the surfaces F1, F2 and F3 are connected in sequence, the surfaces F1 and F3 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth, the surface F2 is arranged between the surfaces F1 and F3, the upper end of the surface F2 is connected to the surface F1, and the lower end is inclined toward the direction close to the inside of the tooth and extends downward to the surface F3, and the teeth on the tenth forming milling cutter at least include: a surface F4, a surface F5, a surface F6, a surface F7, a surface F8 and a surface F9, the surfaces F4, F5, F6, F7, F8 and F9 are connected in sequence, the surfaces F4 and F9 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth. The surface F5, the surface F6, the surface F7 and the surface F8 are arranged between the surface F4 and the surface F9, the surface F5 is perpendicular to the surface F4, and its lower end extends downward to the surface F6, the upper end of the surface F6 is connected to the surface F5, and the lower end extends downward to the surface F7 in an inclined direction away from the inside of the cutter tooth, the surface F7 is parallel to the surface F4, one end of the surface F7 is connected to the surface F6, and the other end extends horizontally to the surface F8 in a direction away from the inside of the cutter tooth, the surface F8 is perpendicular to the surface F4, and its lower end extends downward to the surface F9, the surface F1 is parallel to the surface F9, and the surface F3 is closely attached to the surface F4, so that when the fifth vertical axis combined milling cutter cuts the target floor, the surface F2, the surface F5, the surface F6, the surface F7 and the surface F8 can leave cut surfaces connected end to end on the target floor, so that the fifth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0024] The forming milling cutter on the sixth vertical axis combined milling cutter includes an eleventh forming milling cutter, and the teeth of the eleventh forming milling cutter at least include: surface G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12, the surfaces G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12 are connected in sequence, the surface G1 and the surface G12 are parallel to each other, respectively serving as the upper end surface and the lower end surface of the tooth, the surface G 2. Surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10 and surface G11 are arranged between surface G1 and surface G12, the upper end of surface G2 is connected to surface G1, and the lower end is inclined downwardly extending to surface G3 in a direction away from the inside of the blade tooth, one end of surface G3 is connected to surface G2, and the other end is horizontally extended to surface G4 in a direction close to the inside of the blade tooth, and surface G3 is parallel to surface G1, the upper end of surface G4 is connected to surface G3, and the lower end is inclined downwardly extending to surface G5 in a direction close to the inside of the blade tooth, and the surface G5 is The upper end is connected to the surface G4, and the lower end is inclined downwardly extended to the surface G6 in the direction close to the inside of the blade tooth. The surface G6 is perpendicular to the surface G1, and its lower end is downwardly extended to the surface G7. The upper end of the surface G7 is connected to the surface G6, and the lower end is inclined downwardly extended to the surface G8 in the direction away from the inside of the blade tooth. The upper end of the surface G8 is connected to the surface G7, and the lower end is inclined downwardly extended to the surface G9 in the direction away from the inside of the blade tooth. One end of the surface G9 is connected to the surface G8, and the other end is horizontally extended to the surface G10 in the direction away from the inside of the blade tooth. The surface G9 is parallel to the surface G1. The surface G10 is perpendicular to the surface G1, the lower end of the surface G10 extends downward to the surface G11, the upper end of the surface G11 is connected to the surface G10, and the lower end of the surface G11 is inclined toward the direction close to the inside of the cutter teeth and extends downward to the surface G12, so that when the sixth vertical axis combined milling cutter cuts the target floor, the surface G1, the surface G2, the surface G3, the surface G4, the surface G5, the surface G6, the surface G7, the surface G8, the surface G9, the surface G10 and the surface G11 can leave cut surfaces connected end to end in sequence on the target floor, so that the sixth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0025] The forming milling cutter on the seventh vertical axis combined milling cutter includes a twelfth forming milling cutter and a thirteenth forming milling cutter, the twelfth forming milling cutter and the thirteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the twelfth forming milling cutter at least include: surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8, the surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8 are connected in sequence, the surface H1 and surface H8 are parallel to each other, and are respectively used as cutter teeth. The upper and lower end surfaces of the teeth, the surfaces H2, H3, H4, H5, H6 and H7 are arranged between the surfaces H1 and H8, the surface H2 is perpendicular to the surface H1, and its lower end extends downward to the surface H3, the upper end of the surface H3 is connected to the surface H2, and the lower end is inclined downward to the surface H4 in the direction close to the inside of the tooth, the upper end of the surface H4 is connected to the surface H3, and the lower end is inclined downward to the surface H5 in the direction close to the inside of the tooth, one end of the surface H5 is connected to the surface H4, and the other end is inclined downward to the surface H5, The direction close to the inside of the cutter tooth extends horizontally to the surface H6, and the surface H5 is parallel to the surface H1, the upper end of the surface H6 is connected to the surface H5, and the lower end is inclined downward to the direction close to the inside of the cutter tooth to extend to the surface H7, the surface H7 is perpendicular to the surface H1, and its lower end extends to the surface H8; the cutter teeth on the thirteenth forming milling cutter at least include: surface H9, surface H10 and surface H11, the surface H9 and surface H11 are parallel to each other, respectively serving as the upper end surface and the lower end surface of the cutter tooth, the surface H10 is arranged between the surface H9 and the surface H11, the surface H7 and the surface H10 are located in the same vertical plane, the surface H10 is perpendicular to the surface H9, the surface H1 is parallel to the surface H11, and the surface H8 is tightly against the surface H9, so that when the seventh vertical axis combined milling cutter cuts the target floor, the surface H1, the surface H2, the surface H3, the surface H4, the surface H5, the surface H6, the surface H7 and the surface H10 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the seventh vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0026] The forming milling cutters on the eighth vertical axis combination milling cutter include a fourteenth forming milling cutter and a fifteenth forming milling cutter, the fourteenth forming milling cutter and the fifteenth forming milling cutter are stacked in sequence from top to bottom, the teeth on the fourteenth forming milling cutter include at least: surface I1, surface I2 and surface I3, the surface I1 and surface I3 are parallel to each other, respectively serving as the upper end surface and lower end surface of the teeth, the surface I2 is located between the surface I1 and the surface I3, the surface I2 is perpendicular to the surface I1, and the upper end of the surface I2 is connected to the surface I1, and the lower end is connected to the surface I3, the teeth on the fifteenth forming milling cutter include at least: surface I4, surface I5 and surface I6, the The surface I4 and the surface I6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively. The surface I5 is located between the surface I4 and the surface I6, and the surface I5 is perpendicular to the surface I4. The upper end of the surface I5 is connected to the surface I4, and the lower end is connected to the surface I6. The surface 12 and the surface 15 are located in the same vertical plane. The surface I1 is parallel to the surface I6, and the surface I3 is closely adjacent to the surface I4, so that when the eighth vertical axis combination milling cutter cuts the target floor, the surface I2 and the surface I5 can leave cut surfaces that are connected end to end on the target floor, so that the eighth vertical axis combination milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0027] The forming milling cutter on the ninth vertical axis combination milling cutter includes a sixteenth forming milling cutter, and the teeth on the sixteenth forming milling cutter at least include: a surface J1, a surface J2, a surface J3 and a surface J4, the surfaces J1, J2, J3 and J4 are connected in sequence, the surfaces J1 and J4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces J2 and J3 are both located between the surfaces J1 and J4, the upper end of the surface J2 is connected to the surface J1, and the lower end is inclined downwardly and extends to the surface J3 in a direction away from the inside of the teeth, the upper end of the surface J3 is connected to the surface J2, and the lower end is inclined downwardly and extends to the surface J4 in a direction close to the inside of the teeth, so that when the ninth vertical axis combination milling cutter cuts the target floor, the surfaces J2, J3 and J4 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the ninth vertical axis combination milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0028] The forming milling cutter on the tenth vertical axis combined milling cutter includes a seventeenth forming milling cutter and an eighteenth forming milling cutter, the seventeenth forming milling cutter and the eighteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the seventeenth forming milling cutter at least include: a surface K1, a surface K2 and a surface K3, the surfaces K1, K2 and K3 are connected in sequence, the surfaces K1 and K3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface K2 is located between the surfaces K1 and K3, the upper end of the surface K2 is connected to the surface K1, and the lower end is inclined in a direction away from the inside of the cutter teeth and extends downward to the surface K3, the surface K2 and the surface K3 are connected. 1 is 105-150°, the cutter teeth on the eighteenth forming milling cutter at least include: surface K4, surface K5, surface K6, surface K7, surface K8, surface K9, surface K10, surface K11 and surface K12, surface K4, surface K5, surface K6, surface K7, surface K8, surface K9, surface K10, surface K11 and surface K12 are connected in sequence, the surface K4 and surface K12 are parallel to each other, and serve as the upper end surface and lower end surface of the cutter teeth respectively, the surface K5, surface K6, surface K7, surface K8, surface K9, surface K10 and surface K11 are located between surface K4 and surface K12, the upper end of K5 is adjacent to surface K12, and the upper end of K5 is adjacent to surface K11. 4, the lower end of which extends downwardly and obliquely in a direction away from the inside of the blade teeth to a surface K6, the upper end of which is connected to the surface K5, the lower end of which extends downwardly and obliquely in a direction away from the inside of the blade teeth to a surface K7, the upper end of which is connected to the surface K6, the lower end of which extends downwardly and obliquely in a direction close to the inside of the blade teeth to a surface K8, the upper end of which is connected to the surface K7, the lower end of which extends downwardly and obliquely in a direction close to the inside of the blade teeth to a surface K9, the surface K9 is parallel to the surface K4, one end of which is connected to the surface K8, and the other end of which extends toward the direction close to the inside of the blade teeth to a surface K10, the upper end of which is connected to the surface K9 The lower end of the vertical axis combined milling cutter is connected to the surface K11, the upper end of the surface K11 is connected to the surface K10, and the lower end of the surface K11 is connected to the surface K12, the surface K1 and the surface K12 are parallel to each other, and the surface K3 and the surface K4 are tightly abutted, so that when the tenth vertical axis combined milling cutter cuts the target floor, the surface K2, the surface K5, the surface K6, the surface K7, the surface K8, the surface K9, the surface K10 and the surface K11 can leave the cut surfaces connected end to end on the target floor, so that the tenth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0029] The forming milling cutter on the eleventh vertical axis combined milling cutter includes a nineteenth forming milling cutter, and the teeth on the nineteenth forming milling cutter at least include: a surface L1, a surface L2, a surface L3 and a surface L4, the surfaces L1, L2, L3 and L4 are connected in sequence, the surfaces L1 and L4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces L2 and L3 are both located between the surfaces L1 and L4, the upper end of the surface L2 is connected to the surface L1, and the lower end is inclined in a direction away from the inside of the teeth and extends downward to the surface L3, the surface L3 is perpendicular to the surface L4, so that when the eleventh vertical axis combined milling cutter cuts the target floor, the surfaces L2 and L3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the eleventh vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0030] The forming milling cutter on the twelfth vertical axis combined milling cutter includes a twentieth forming milling cutter, and the teeth on the twentieth forming milling cutter at least include: a surface M1, a surface M2, a surface M3 and a surface M4, the surfaces M1, M2, M3 and M4 are connected in sequence, the surfaces M1 and M4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces M2 and M3 are both located between the surfaces M1 and M4, the upper end of the surface M2 is connected to the surface M1, and the lower end is inclined toward the direction close to the inside of the teeth and extends downward to the surface M3, the surface M3 is perpendicular to the surface M4, so that when the twelfth vertical axis combined milling cutter cuts the target floor, the surfaces M2 and M3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the twelfth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0031] The forming milling cutter on the thirteenth vertical axis combined milling cutter includes a twenty-first forming milling cutter, and the teeth on the twenty-first forming milling cutter at least include: surface N1, surface N2 and surface N3, the surface N1, surface N2 and surface N3 are connected in sequence, the surface N1 and surface N4 are parallel to each other, and respectively serve as the upper end face and lower end face of the tooth, the surface N2 is located between the surface N1 and the surface N3, and the surface N2 is perpendicular to the surface N1, so that when the thirteenth vertical axis combined milling cutter cuts the target floor, the surface N3 can leave a cut surface on the target floor, which is used for the thirteenth vertical axis combined milling cutter to process the locking connection surfaces of different layers of the composite floor; when the thirteenth vertical axis combined milling cutter cuts the target floor, it cuts through the surface N3; in addition, other cutters use the surfaces mentioned except the upper end face and the lower end face for cutting.

[0032] The forming milling cutter on the fourteenth vertical axis combined milling cutter includes a twenty-second forming milling cutter, and the teeth on the twenty-second forming milling cutter at least include: surface O1, surface O2, surface O3 and surface O4, the surfaces O1, surface O2, surface O3 and surface O4 are connected in sequence, the surfaces O1 and surface O4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces O2 and surface O3 are both located between the surfaces O1 and O4, the upper end of the surface O2 is connected to the surface O1, and the lower end is inclined downwardly and extends to the surface O3 in a direction close to the inside of the teeth, the upper end of the surface O3 is connected to the surface O2, and the lower end is inclined downwardly and extends to the surface O4 in a direction away from the inside of the teeth, so that when the fourteenth vertical axis combined milling cutter cuts the target floor, the surfaces O2 and surface O3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fourteenth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0033] The forming milling cutter on the fifteenth vertical axis combined milling cutter includes a twenty-third forming milling cutter and a twenty-fourth forming milling cutter, the twenty-third forming milling cutter and the twenty-fourth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-third forming milling cutter at least include: surface P1, surface P2 and surface P3, the surfaces P1, surface P2 and surface P3 are connected in sequence, the surfaces P1 and surface P3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface P2 is located between the surfaces P1 and the surfaces P3, and the surface P2 is perpendicular to the surface P1, the teeth on the twenty-fourth forming milling cutter at least include: surfaces P4, surfaces P5 and surface P6. P6, the surface P4, surface P5 and surface P6 are connected in sequence, the surface P4 and surface P6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface P5 is located between the surface P4 and the surface P6, the surface P5 is perpendicular to the surface P4, the surface P2 and the surface P5 are located in the same vertical plane, the surface P1 is parallel to the surface P6, and the surface P3 is closely adjacent to the surface P4, so that when the fifteenth vertical axis combined milling cutter cuts the target floor, the surface P2 and the surface P5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fifteenth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0034] The forming milling cutter on the sixteenth vertical axis combined milling cutter includes a twenty-fifth forming milling cutter and a twenty-sixth forming milling cutter, the twenty-fifth forming milling cutter and the second forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-fifth forming milling cutter at least include: surface Q1, surface Q2 and surface Q3, the surface Q1, surface Q2 and surface Q3 are connected in sequence, the surface Q1 and surface Q3 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surface Q2 is located between the surface Q1 and the surface Q3, and the surface Q2 is perpendicular to the surface Q1, the teeth on the twenty-fourth forming milling cutter at least include: surface Q4, surface Q5 and surface Q6. 6, the surface Q4, surface Q5 and surface Q6 are connected in sequence, the surface Q4 and surface Q6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface Q5 is located between the surface Q4 and the surface Q6, the surface Q5 is perpendicular to the surface Q4, the surface Q2 and the surface Q5 are located in the same vertical plane, the surface Q1 is parallel to the surface Q6, and the surface Q3 is closely adjacent to the surface Q4, so that when the sixteenth vertical axis combination milling cutter cuts the target floor, the surface Q2 and the surface Q5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the sixteenth vertical axis combination milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0035] The forming milling cutter on the seventeenth vertical axis combined milling cutter includes a twenty-seventh forming milling cutter and a twenty-eighth forming milling cutter, the twenty-seventh forming milling cutter and the twenty-eighth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-seventh forming milling cutter at least include: surface R1, surface R2 and surface R3, the surfaces R1, R2 and R3 are connected in sequence, the surfaces R1 and R3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface R2 is located between the surfaces R1 and R3, and the surface R2 is perpendicular to the surface R1, the teeth on the twenty-eighth forming milling cutter at least include: surfaces R4, R5 and R6. 6, the surface R4, surface R5 and surface R6 are connected in sequence, the surface R4 and surface R6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface R5 is located between the surface R4 and the surface R6, the surface R5 is perpendicular to the surface R4, the surface R2 and the surface R5 are located in the same vertical plane, the surface R1 is parallel to the surface R6, and the surface R3 is closely adjacent to the surface R4, so that when the seventeenth vertical axis combined milling cutter cuts the target floor, the surface R2 and the surface R5 can leave cut surfaces connected end to end in sequence on the target floor, so that the seventeenth vertical axis combined milling cutter can process the locking connection surfaces of different layers of the composite floor;

[0036] The forming milling cutter on the eighteenth vertical axis combined milling cutter includes a twenty-ninth forming milling cutter and a thirtieth forming milling cutter, the twenty-ninth forming milling cutter and the thirtieth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-ninth forming milling cutter at least include: surface S1, surface S2 and surface S3, the surface S1, surface S2 and surface S3 are connected in sequence, the surface S1 and surface S3 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surface S2 is located between the surface S1 and the surface S3, the surface S2 is perpendicular to the surface S1, and the teeth on the thirtieth forming milling cutter at least include: surface S4, surface S5 and surface S6 , the surface S4, surface S5 and surface S6 are connected in sequence, the surface S4 and surface S6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface S5 is located between the surface S4 and the surface S6, the surface S5 is perpendicular to the surface S4, the surface S2 and the surface S5 are located in the same horizontal plane, the surface S1 is parallel to the surface S6, and the surface S3 is closely adjacent to the surface S4, so that when the eighteenth vertical axis combination milling cutter cuts the target floor, the surface S2 and the surface S5 can leave cut surfaces that are connected end to end in sequence on the target floor, which is used for the seventeenth vertical axis combination milling cutter to process the locking connection surfaces of different layers of the composite floor.

[0037] Preferably, each of the forming milling cutters is provided with 6 teeth, the material of the teeth is high-speed steel, the diameter of the forming milling cutter body is set to 200-250 mm according to the thickness of the stone-plastic composite floor, and in each vertical axis combination milling cutter composed of at least two forming milling cutters, the teeth between each layer of the forming milling cutters are spaced apart in the vertical direction.

[0038] Preferably, the target processed floor comprises a balancing layer, a base material layer, a decorative layer and a wear-resistant layer, and the balancing layer, the base material layer, the decorative layer and the wear-resistant layer are fixedly stacked in sequence from top to bottom;

[0039] The teeth of the first forming milling cutter, the fourth forming milling cutter, the ninth forming milling cutter and the seventeenth forming milling cutter are made of cemented carbide, and the profile of the teeth of the milling cutter corresponds to the lock connection surface of the balancing layer to be cut by the teeth. The size of the teeth should extend 0.1-0.2mm from the lock connection surface of the stone plastic composite floor to be processed in the axial direction and 1-2mm from the lock connection surface of the stone plastic composite floor to be processed in the radial direction, so as to cut the balancing layer;

[0040] The tooth material of the second molding milling cutter, the fifth molding milling cutter, the sixth molding milling cutter, the seventh molding milling cutter, the tenth molding milling cutter, the eleventh molding milling cutter, the twelfth molding milling cutter, the fourteenth molding milling cutter, the sixteenth molding milling cutter, the eighteenth molding milling cutter, the nineteenth molding milling cutter, the twentieth molding milling cutter, the twenty-first molding milling cutter, the twenty-second molding milling cutter, the twenty-third molding milling cutter, the twenty-fifth molding milling cutter, the twenty-seventh molding milling cutter and the twenty-ninth molding milling cutter is CVD diamond, the profile of the milling cutter tooth corresponds to the locking connection surface of the substrate layer to be cut by the tooth, the tooth size in the axial direction should extend 0.1-0.2mm from the locking connection surface to be processed of the stone plastic composite floor, and in the radial direction, it should be 1-2mm away from the locking connection surface to be processed of the stone plastic composite floor, so as to cut the substrate layer;

[0041] The teeth of the third forming milling cutter, the eighth forming milling cutter, the thirteenth forming milling cutter, the fifteenth forming milling cutter, the twenty-fourth forming milling cutter, the twenty-sixth forming milling cutter, the twenty-eighth forming milling cutter and the thirtieth forming milling cutter are made of polycrystalline diamond. The profile of the milling cutter teeth corresponds to the locking connection surface of the decorative layer and the wear-resistant layer to be cut by the teeth. The size of the teeth should extend 0.1-0.2mm beyond the locking connection surface to be processed of the stone-plastic composite floor in the axial direction, 1-2mm away from the locking connection surface to be processed of the stone-plastic composite floor in the radial direction, and 2mm beyond the stone-plastic composite floor in the radial direction, so as to cut the decorative layer and the wear-resistant layer.

[0042] Preferably, the low-temperature spraying device sprays CO2 or mist lubricant.

[0043] Preferably, the low-temperature spraying device comprises 1 or 2 spraying units, the spraying unit is provided with an air inlet pipe and a spraying pipe, one end of the spraying pipe is connected to the air inlet pipe, and the end surface of the other end is covered with a spraying net, the spraying net is covered with a nozzle cap, and the nozzle cap is provided on the spraying pipe;

[0044] A flow valve is arranged in the injection pipe, and the flow valve includes a valve core, a sealing member, a valve stem and a valve handle. The valve core can abut against the inner wall of the injection pipe, the sealing member is located between the valve core and the inner wall of the injection pipe, and the sealing member is arranged on the valve core. One end of the valve stem is connected to the valve core, and the other end extends out of the injection pipe and is connected to the valve handle. The valve stem and the valve core are both rotatably connected to the injection pipe, so as to control the gas flow in the injection pipe.

[0045] Optionally, a low-temperature injection device on one side of the first vertical axis combined milling cutter, the second vertical axis combined milling cutter, the third vertical axis combined milling cutter, the fourth vertical axis combined milling cutter, the sixth vertical axis combined milling cutter, the eighth vertical axis combined milling cutter, the ninth vertical axis combined milling cutter and the tenth vertical axis combined milling cutter injects CO2 gas;

[0046] The low-temperature spray device on one side of the fifth vertical axis combination milling cutter, the seventh vertical axis combination milling cutter, the eleventh vertical axis combination milling cutter, the twelfth vertical axis combination milling cutter, the thirteenth vertical axis combination milling cutter, the fourteenth vertical axis combination milling cutter, the fifteenth vertical axis combination milling cutter, the sixteenth vertical axis combination milling cutter, the seventeenth vertical axis combination milling cutter and the eighteenth vertical axis combination milling cutter sprays mist lubricant.

[0047] Preferably, the low temperature injection device injects supercritical CO 2 When the gas is used, there are two injection units symmetrically distributed around the milling cutter, with the nozzle cap facing the cutting area, and supercritical CO 2 The gas is injected into the cutting area through compressed air;

[0048] When spraying mist lubricant, the low-temperature spray device is provided with a spray unit, the nozzle cap points to the to-be-cut teeth of the milling cutter, and the mist lubricant is sprayed onto the to-be-cut teeth of the milling cutter through compressed air.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] 1. The present application sets multiple cutter shafts and multiple workstations, and processes the balancing layer, base material layer, decorative layer and wear-resistant layer of the stone-plastic composite floor through vertical axis combination milling cutters of different shapes, which can reduce the single cutting amount, avoid brittle damage of the stone-plastic material in the base material layer caused by excessive cutting amount, and reduce the processing defective rate of the stone-plastic composite floor. At the same time, vertical axis combination milling cutters of different shapes can form locks that can be spliced ​​at both ends of the target processing floor, so that the processed target floors can be stably spliced ​​with each other.

[0051] 2. This application increases the number of double-end milling cutter shaft configurations. The purpose of setting different vertical axis combined milling cutters is to separately cut and process the balancing layer, base material layer, decorative layer and wear-resistant layer of the stone plastic composite floor. Since the materials used for each layer of the stone plastic composite floor are different, different milling cutters are selected for cutting according to different material characteristics, which is beneficial to improve the cutting quality, avoid the uneven processing surface of the balancing layer of the stone plastic composite floor and the wood hair and fiber tearing problems in the decorative layer, and further improve the assembly accuracy of the stone plastic composite floor.

[0052] 3. During the cutting process, a low-temperature spray device is used to assist cutting, which reduces the cutting temperature and the friction between the tool and the cutting material. This is not only conducive to preventing the formation of built-up edge, but also further improves the cutting quality, making the cutting surface smoother, and avoiding problems such as joint separation, joint bulge, and uneven joint level. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a simple schematic diagram of the overall structure in this application;

[0054] Figure 2A simple schematic diagram of the positional relationship of the components of the overall structure of this application;

[0055] Figure 3 It is a state diagram of the first vertical axis combination milling cutter, the second vertical axis combination milling cutter, the third vertical axis combination milling cutter, the fourth vertical axis combination milling cutter, the ninth vertical axis combination milling cutter and the tenth vertical axis combination milling cutter in the present application when processing the composite stone-plastic composite floor;

[0056] Figure 4 This is a state diagram of the fifth vertical axis combination milling cutter, the seventh vertical axis combination milling cutter, the sixth vertical axis combination milling cutter and the eighth vertical axis combination milling cutter in the present application when processing the composite stone-plastic composite floor;

[0057] Figure 5 It is a state diagram of the eleventh vertical axis combination milling cutter, the thirteenth vertical axis combination milling cutter, the fifteenth vertical axis combination milling cutter, the seventeenth vertical axis combination milling cutter, the twelfth vertical axis combination milling cutter, the fourteenth vertical axis combination milling cutter, the sixteenth vertical axis combination milling cutter and the eighteenth vertical axis combination milling cutter in the present application when processing the stone plastic composite floor;

[0058] Figure 6 A simplified diagram showing the overall structure of the first vertical axis combined milling cutter in this application;

[0059] Figure 7 A simplified diagram showing the overall structure of the second vertical axis combined milling cutter in this application;

[0060] Figure 8 A simplified diagram showing the overall structure of the third vertical axis combined milling cutter in this application;

[0061] Fig. 9 A simplified diagram showing the overall structure of the fourth vertical axis combined milling cutter in this application;

[0062] Fig.10 A simplified diagram showing the overall structure of the fifth vertical axis combined milling cutter in this application;

[0063] Fig.11 A simplified diagram showing the overall structure of the sixth vertical axis combined milling cutter in this application;

[0064] Fig.12 A simplified diagram showing the overall structure of the seventh vertical axis combined milling cutter in this application;

[0065] Fig.13 A simplified diagram showing the overall structure of the eighth vertical axis combined milling cutter in this application;

[0066] Fig.14 A simplified diagram showing the overall structure of the ninth vertical axis combined milling cutter in this application;

[0067] Fig.15A simplified diagram showing the overall structure of the tenth vertical axis combined milling cutter in this application;

[0068] Fig.16 A simplified diagram showing the overall structure of the eleventh vertical axis combined milling cutter in this application;

[0069] Fig.17 A simplified diagram showing the overall structure of the twelfth vertical axis combined milling cutter in this application;

[0070] Fig.18 A simplified diagram showing the overall structure of the thirteenth vertical-axis combined milling cutter in this application;

[0071] Fig.19 A simplified diagram showing the overall structure of the fourteenth vertical axis combined milling cutter in this application;

[0072] Fig. 20 A simplified diagram showing the overall structure of the fifteenth vertical axis combined milling cutter in this application;

[0073] Fig.21 A simplified diagram showing the overall structure of the sixteenth vertical axis combined milling cutter in this application;

[0074] Fig. 22 This is a simplified diagram of the overall structure of the seventeenth vertical axis combined milling cutter in this application;

[0075] Fig.23 A simplified diagram showing the overall structure of the eighteenth vertical axis combined milling cutter in this application;

[0076] Fig.24 This is a state diagram of the first vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0077] Fig.25 This is a state diagram of the second vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0078] Fig.26 This is a state diagram of the third vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0079] Fig. 27 This is a state diagram of the fourth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0080] Fig.28 This is a state diagram of the fifth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0081] Fig.29 This is a state diagram of the sixth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0082] Fig.30 This is a state diagram of the seventh vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0083] Fig.31 This is a state diagram of the eighth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0084] Fig.32 This is a state diagram of the ninth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0085] Fig.33 This is a state diagram of the tenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0086] Fig.34 This is a state diagram of the eleventh vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0087] Fig.35 This is a state diagram of the twelfth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0088] Fig.36 This is a state diagram of the thirteenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0089] Fig.37 This is a state diagram of the fourteenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0090] Fig.38 This is a state diagram of the fifteenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0091] Fig.39 This is a state diagram of the sixteenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0092] Fig.40 This is a state diagram of the seventeenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0093] Fig.41 This is a state diagram of the eighteenth vertical axis combined milling cutter processing the stone plastic composite floor in this application;

[0094] Fig.42 This is a schematic diagram of the splicing of the stone plastic composite floor after processing by this application;

[0095] Fig.43 It is a schematic diagram of the overall structure of the injection unit in this application;

[0096] Fig.44 It is a cross-sectional view of the overall structure of the injection unit in this application;

[0097] Fig.45 It is a schematic diagram of the overall structure of the injection valve in this application;

[0098] Fig.46This is a schematic diagram of the overall structure of the stone-plastic composite floor in this application;

[0099] In the figure: cutter shaft 1, injection unit 2, air inlet pipe 3, injection pipe 4, spray net 5, nozzle cap 6, flow valve 7, valve core 71, seal 72, valve stem 73, valve handle 74, first horizontal line 8, second horizontal line 9, third horizontal line 10, fourth horizontal line 11, fifth horizontal line 12, sixth horizontal line 13, seventh horizontal line 14, eighth horizontal line 15, ninth horizontal line 16, tenth horizontal line 17, eleventh horizontal line 18, first vertical axis combined milling cutter T1, second vertical axis combined milling cutter T2, third vertical axis combined milling cutter T3, fourth vertical axis combined milling cutter T4, The fifth vertical axis combination milling cutter T5, the sixth vertical axis combination milling cutter T6, the seventh vertical axis combination milling cutter T7, the eighth vertical axis combination milling cutter T8, the ninth vertical axis combination milling cutter T9, the tenth vertical axis combination milling cutter T10, the eleventh vertical axis combination milling cutter T11, the twelfth vertical axis combination milling cutter T12, the thirteenth vertical axis combination milling cutter T13, the fourteenth vertical axis combination milling cutter T14, the fifteenth vertical axis combination milling cutter T15, the sixteenth vertical axis combination milling cutter T16, the seventeenth vertical axis combination milling cutter T17 and the eighteenth vertical axis combination milling cutter T18, a balancing layer a, a base material layer b, a decorative layer c, and a wear-resistant layer d. DETAILED DESCRIPTION

[0100] The following will be combined with the attached embodiment of the present invention Figure 1-46 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0101] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0102] See also Figure 1-46 , embodiments of the present invention:

[0103] Example:

[0104] like Figure 1-2 Shown: A low-temperature processing device for locking buckles of a stone-plastic composite floor, comprising:

[0105] A cutter shaft 1, wherein the cutter shaft 1 is a double-ended milling cutter shaft 1;

[0106] A milling cutter assembly, the milling cutter assembly comprising a first milling cutter group and a second milling cutter group, the first milling cutter group and the second milling cutter group are arranged opposite to each other and are respectively located on both sides of the target processing floor, and the first milling cutter group and the second milling cutter group are each composed of 9 vertical axis combined milling cutters, and the vertical axis combined milling cutters are respectively arranged on different cutter shafts 1;

[0107] A low temperature spraying assembly is provided on the cutter shaft 1, and the low temperature spraying assembly is provided on one side of the vertical axis combined milling cutter.

[0108] Specifically, in this embodiment, a 9-station 18-tool shaft 1 is used, and milling cutters with different tooth profiles are used to cut the balancing layer a, the base material layer b, the decorative layer c and the wear-resistant layer d of the stone-plastic composite floor respectively.

[0109] Specifically, the thickness of the stone plastic composite floor in this embodiment is 8mm, wherein the thickness of the balancing layer a is 2mm, the thickness of the base material layer b is 5mm, and the thickness of the decorative layer c and the wear-resistant layer d is 1mm.

[0110] like Figure 1-2 As shown: the first milling cutter group includes: a first vertical axis combined milling cutter T1, a third vertical axis combined milling cutter T3, a fifth vertical axis combined milling cutter T5, a seventh vertical axis combined milling cutter T7, a ninth vertical axis combined milling cutter T9, an eleventh vertical axis combined milling cutter T11, a thirteenth vertical axis combined milling cutter T13, a fifteenth vertical axis combined milling cutter T15 and a seventeenth vertical axis combined milling cutter T17, and the vertical axis combined milling cutters in the first milling cutter group are arranged in sequence;

[0111] The second milling cutter group includes: a second vertical axis combined milling cutter T2, a fourth vertical axis combined milling cutter T4, a sixth vertical axis combined milling cutter T6, an eighth vertical axis combined milling cutter T8, a tenth vertical axis combined milling cutter T10, a twelfth vertical axis combined milling cutter T12, a fourteenth vertical axis combined milling cutter T14, a sixteenth vertical axis combined milling cutter T16 and an eighteenth vertical axis combined milling cutter T18, and the vertical axis combined milling cutters in the second milling cutter group are arranged in sequence;

[0112] Each vertical axis combined milling cutter in the first milling cutter group and the second milling cutter group is sequentially arranged on both sides of the target processing floor. Each vertical axis combined milling cutter in the first milling cutter group and the second milling cutter group is sequentially arranged on both sides of the target processing floor, and there is a floor placement area between the first milling cutter group and the second milling cutter group, and the floor placement area is used to store the target processing wood board, that is, it can be understood that each vertical axis combined milling cutter in the first milling cutter group and the second milling cutter group is sequentially arranged on both sides of the target processing floor.

[0113] The tool axes of the vertical axis combined milling cutters in the first milling cutter group and the second milling cutter group are arranged perpendicular to the target processing floor;

[0114] The cutter axes of the vertical axis combined milling cutters of the first milling cutter group are arranged on the same horizontal line 1, which is the first horizontal line 8, and the cutter axes of the vertical axis combined milling cutters of the second milling cutter group are arranged on another horizontal line 2, which is the second horizontal line 9, and the first horizontal line and the second horizontal line are parallel to each other, and the distance between them is the sum of the board width of the target processing floor and the diameter of the forming milling cutter;

[0115] The horizontal line where the tool axes of the first vertical axis combination milling cutter T1 and the second vertical axis combination milling cutter T2 are set is the third horizontal line 10, and the third horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the third vertical axis combination milling cutter T3 and the fourth vertical axis combination milling cutter T4 are set is the fourth horizontal line 11, and the fourth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the fifth vertical axis combination milling cutter T5 and the sixth vertical axis combination milling cutter T6 are set is the fifth horizontal line 12, and the fifth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the seventh vertical axis combination milling cutter T7 and the eighth vertical axis combination milling cutter T8 are set is the sixth horizontal line 13, and the sixth horizontal line is perpendicular to the first horizontal line and the second horizontal line. The horizontal line where the tool axes of the ninth vertical axis combination milling cutter T9 and the tenth vertical axis combination milling cutter T10 are set is the seventh horizontal line. 14, the seventh horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the eleventh vertical axis combination milling cutter T11 and the twelfth vertical axis combination milling cutter T12 are set is the eighth horizontal line 15, and the eighth horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the thirteenth vertical axis combination milling cutter T13 and the fourteenth vertical axis combination milling cutter T14 are set is the ninth horizontal line 16, and the ninth horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the fifteenth vertical axis combination milling cutter T15 and the sixteenth vertical axis combination milling cutter T16 are set is the tenth horizontal line 17, and the tenth horizontal line is perpendicular to the first horizontal line and the second horizontal line, the horizontal line where the tool axes of the seventeenth vertical axis combination milling cutter T17 and the eighteenth vertical axis combination milling cutter T18 are set is the eleventh horizontal line 18, and the eleventh horizontal line is perpendicular to the first horizontal line and the second horizontal line.

[0116] Specifically, in this embodiment, the above content means that the first vertical axis combination milling cutter T1 and the second vertical axis combination milling cutter T2 are a group, which are symmetrically arranged on both sides of the target processing floor, and the third vertical axis combination milling cutter T3 and the fourth vertical axis combination milling cutter T4 are a group, which are symmetrically arranged on both sides of the target processing floor, and the other vertical axis combination milling cutters in the same group are similarly arranged symmetrically on both sides of the target processing floor.

[0117] like Figure 3-5 As shown: the first vertical axis combined milling cutter T1 is composed of three stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected by positioning pins, so as to process the locking connection surfaces of different layers of the composite floor at the same time;

[0118] The third vertical axis combined milling cutter T3, the sixth vertical axis combined milling cutter T6, the ninth vertical axis combined milling cutter T9, the eleventh vertical axis combined milling cutter T11, the twelfth vertical axis combined milling cutter T12, the thirteenth vertical axis combined milling cutter T13 and the fourteenth vertical axis combined milling cutter T14 are all composed of one forming milling cutter;

[0119] The second vertical axis combination milling cutter T2, the fourth vertical axis combination milling cutter T4, the fifth vertical axis combination milling cutter T5, the seventh vertical axis combination milling cutter T7, the eighth vertical axis combination milling cutter T8, the tenth vertical axis combination milling cutter T10, the fifteenth vertical axis combination milling cutter T15, the sixteenth vertical axis combination milling cutter T16, the seventeenth vertical axis combination milling cutter T17 and the eighteenth vertical axis combination milling cutter T18 are each composed of two stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected by locating pins, so as to simultaneously process the locking connection surfaces of different layers of the composite floor.

[0120] Specifically, in this embodiment, the three stacked forming milling cutters of the first vertical axis combined milling cutter T1, one of which is used for cutting the balancing layer a, one for cutting the base material layer b, and one for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d. At the same time, since the vertical axis combined milling cutter T1 has a large cutting depth, it is very easy to generate built-up edge when cutting the base material layer b. In order to avoid the high cutting temperature and the built-up edge affecting the cutting quality, a low-temperature spraying device is used to spray supercritical CO during the cutting process. 2 Gas, supercritical CO 2 The gas itself has a low temperature, which can quickly reduce the temperature of the cutting area and prevent the formation of built-up edge.

[0121] The second vertical axis combined milling cutter T2 has two stacked forming milling cutters, one of which is used for cutting the balancing layer a and the other for cutting the base layer b. When cutting the balancing layer a and the base layer b, due to the different melting points of the materials of different layers, the high cutting temperature will cause the material with the low melting point to melt. At the same time, due to the large cutting depth of the vertical axis combined milling cutter T2, it is very easy to generate built-up edge when cutting the base layer b. In order to avoid the high cutting temperature and built-up edge affecting the cutting quality, a low-temperature injection device is used to spray supercritical CO during the cutting process. 2 Gas, supercritical CO 2 The gas itself has a low temperature, which can quickly reduce the temperature of the cutting area and prevent the formation of built-up edge.

[0122] The third vertical axis combined milling cutter T3 has a forming milling cutter, which is only used for cutting the floor substrate layer b. However, due to the large cutting depth of the vertical axis milling cutter T3, it is very easy to generate built-up edge when cutting the substrate layer b. In order to avoid the built-up edge affecting the cutting quality, a low-temperature injection device is used to spray supercritical CO 2 Gas reduces the temperature in the cutting area and prevents the formation of built-up edge.

[0123] The fourth vertical axis combined milling cutter T4 has two stacked forming milling cutters, one of which is used for cutting the base layer b, and the other is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d. At the same time, when cutting the base layer b, the decorative layer c, and the wear-resistant layer d, due to the different melting points of the materials of different layers, the high cutting temperature will cause the material with a low melting point to melt. At the same time, since the vertical axis combined milling cutter T4 has a large cutting depth, it is very easy to generate built-up edge when cutting the base layer b. In order to avoid the high cutting temperature and built-up edge affecting the cutting quality, a low-temperature spray device is used to spray supercritical CO during the cutting process. 2 Gas, supercritical CO 2 The gas itself has a low temperature, which can quickly reduce the temperature of the cutting area and prevent the formation of built-up edge.

[0124] The fifth vertical axis combination milling cutter T5 has two stacked forming milling cutters, one of which is used for cutting the balancing layer a, and the other is used for cutting the base material layer b. When cutting the balancing layer a and the base material layer b, since the vertical axis combination milling cutter T5 has a low cutting depth and a low cutting temperature, the material is not easy to melt. Therefore, a low-temperature spray device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T5, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0125] The sixth vertical axis combined milling cutter T6 is only used for cutting the floor substrate layer b. However, due to the large cutting depth of the vertical axis milling cutter T6, it is very easy to generate built-up edge when cutting the substrate layer b. In order to avoid the built-up edge affecting the cutting quality, a low-temperature injection device is used to spray supercritical CO 2 Gas reduces the temperature in the cutting area and prevents the formation of built-up edge.

[0126] The seventh vertical axis combination milling cutter T7 has two stacked forming milling cutters, among which one milling cutter is used for cutting the base material layer b, and the other milling cutter is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d; when cutting the base material layer b, the decorative layer c and the wear-resistant layer d, since the vertical axis combination milling cutter T7 has a low cutting depth and a low cutting temperature, the material is not easy to melt, and therefore a low-temperature spraying device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T7, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0127] The eighth vertical axis combined milling cutter T8 has two stacked forming milling cutters, one of which is used for cutting the base layer b, and the other is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d. At the same time, when cutting the base layer b, the decorative layer c, and the wear-resistant layer d, due to the different melting points of the materials of different layers, the high cutting temperature will cause the material with a low melting point to melt. At the same time, since the vertical axis combined milling cutter T8 has a large cutting depth, it is very easy to generate built-up edge when cutting the base layer b. In order to avoid the high cutting temperature and built-up edge affecting the cutting quality, a low-temperature spray device is used to spray supercritical CO during the cutting process. 2 Gas, supercritical CO 2 The gas itself has a low temperature, which can quickly reduce the temperature of the cutting area and prevent the formation of built-up edge.

[0128] The ninth vertical axis combined milling cutter T9 is only used for cutting the floor substrate layer b. However, due to the large cutting depth of the vertical axis milling cutter T9, it is very easy to generate built-up edge when cutting the substrate layer b. In order to avoid the built-up edge affecting the cutting quality, a low-temperature injection device is used to spray supercritical CO 2 Gas reduces the temperature in the cutting area and prevents the formation of built-up edge.

[0129] The tenth vertical axis combined milling cutter T10 has two stacked forming milling cutters, one of which is used for cutting the balancing layer a and the other for cutting the base layer b. When cutting the balancing layer a and the base layer b, due to the different melting points of the materials of different layers, the high cutting temperature will cause the material with the low melting point to melt. At the same time, due to the large cutting depth of the vertical axis combined milling cutter T10, it is very easy to generate built-up edge when cutting the base layer b. In order to avoid the high cutting temperature and built-up edge affecting the cutting quality, a low-temperature injection device is used to spray supercritical CO during the cutting process. 2 Gas, supercritical CO 2 The gas itself has a low temperature, which can quickly reduce the temperature of the cutting area and prevent the formation of built-up edge.

[0130] The eleventh vertical axis combined milling cutter T11 is only used for cutting processing of the floor substrate layer b. Due to the low cutting depth and low cutting temperature, the material is not easy to melt. Therefore, a low-temperature spray device is used to spray mist lubricant to obtain a higher cutting surface quality. The mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combined milling cutter T11, reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processing surface.

[0131] The twelfth vertical axis combined milling cutter T12 is only used for cutting processing of the floor substrate layer b. Due to the low cutting depth, low cutting temperature, and the material is not easy to melt, a low-temperature spray device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combined milling cutter T12, reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processing surface.

[0132] The thirteenth vertical axis combination milling cutter T13 is only used for cutting processing of the floor substrate layer b. Due to the low cutting depth and low cutting temperature, the material is not easy to melt. Therefore, a low-temperature spray device is used to spray mist lubricant to obtain higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T13, reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processing surface.

[0133] The fourteenth vertical axis combination milling cutter T14 is only used for cutting processing of the floor substrate layer b. Due to the low cutting depth and low cutting temperature, the material is not easy to melt. Therefore, a low-temperature spray device is used to spray mist lubricant to obtain higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T14, reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processing surface.

[0134] The fifteenth vertical axis combination milling cutter T15 has two stacked forming milling cutters, among which one milling cutter is used for cutting the base material layer b, and the other milling cutter is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d; when cutting the base material layer b, the decorative layer c and the wear-resistant layer d, since the vertical axis combination milling cutter T15 has a low cutting depth and a low cutting temperature, the material is not easy to melt, and therefore a low-temperature spraying device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T15, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0135] The sixteenth vertical axis combination milling cutter T16 has two stacked forming milling cutters, among which one milling cutter is used for cutting the base material layer b, and the other milling cutter is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d; when cutting the base material layer b, the decorative layer c and the wear-resistant layer d, since the vertical axis combination milling cutter T16 has a low cutting depth and a low cutting temperature, the material is not easy to melt, and therefore a low-temperature spraying device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T16, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0136] The seventeenth vertical axis combination milling cutter T17 has two stacked forming milling cutters, among which one milling cutter is used for cutting the base material layer b, and the other milling cutter is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d; when cutting the base material layer b, the decorative layer c and the wear-resistant layer d, since the vertical axis combination milling cutter T17 has a low cutting depth and a low cutting temperature, the material is not easy to melt, and therefore a low-temperature spraying device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T17, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0137] The eighteenth vertical axis combination milling cutter T18 has two stacked forming milling cutters, among which one milling cutter is used for cutting the base material layer b, and the other milling cutter is used for cutting the decorative layer c and the wear-resistant layer d. Since the thickness of the decorative layer c and the wear-resistant layer d is relatively small, only one milling cutter is needed to complete the cutting of the decorative layer c and the wear-resistant layer d; when cutting the base material layer b, the decorative layer c and the wear-resistant layer d, since the cutting depth and cutting temperature of the vertical axis combination milling cutter T18 are relatively low, the material is not easy to melt, and therefore a low-temperature spraying device is used to spray mist lubricant to obtain a higher cutting surface quality, so that the mist lubricant is evenly attached to the surface of the teeth to be cut of the vertical axis combination milling cutter T18, thereby reducing the friction between the teeth to be cut and the cutting material, and obtaining a smooth processed surface.

[0138] like Figure 4-42As shown: the forming milling cutter on the first vertical axis combined milling cutter T1 includes a first forming milling cutter, a second forming milling cutter and a third forming milling cutter, the first forming milling cutter, the second forming milling cutter and the third forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the first forming milling cutter at least include: surface A1, surface A2, surface A3, the surfaces A1, A2 and A3 are connected in sequence, the surfaces A1 and A3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface A2 is arranged between the surfaces A1 and A3, and the upper end of the surface A2 is connected to the surface A1, The lower end is inclined downward to the surface A3 toward the direction close to the inside of the tooth, and the angle between the surface A2 and the surface A1 is 30-75°; the tooth on the second forming milling cutter at least includes: surface A4, surface A5, surface A6, surface A7 and surface A8, and the surfaces A4, A5, A6, A7 and A8 are connected in sequence, wherein the surface A4 and the surface A8 are parallel to each other and serve as the upper end surface and the lower end surface of the tooth respectively, the surface A5, the surface A6 and the surface A7 are connected in sequence and arranged between the surface A4 and the surface A8, and the surface A5 and the surface A7 are Perpendicular to surface A4, the upper end of surface A6 is connected to the lower end of surface A5, the lower end of surface A6 is inclined downwardly and extends to surface A7 in a direction away from the inside of the tooth, and is connected to the upper end of surface A7, the angle between surface A6 and surface A5 is 105-150°; the tooth on the third forming milling cutter at least includes: surface A9, surface A10 and surface A11, the surface A9, surface A10 and surface A11 are connected in sequence, wherein surface A9 and surface A11 are parallel to each other, serving as the upper end surface and lower end surface of the tooth respectively, the surface A10 is arranged between surface A9 and surface A11 The surface A1, surface A4 and surface A9 are parallel to each other, the surface A7 and surface A10 are located in the same vertical plane, the surface A2 is closely in contact with the surface A4, and the surface A8 is closely in contact with the surface A9, so that when the first vertical axis combined milling cutter T1 cuts the target floor, the surface A2, the surface A5, the surface A6, the surface A7 and the surface A10 can leave cut surfaces that are sequentially connected end to end on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U1 by the first vertical axis combined milling cutter T1;

[0139] The forming milling cutters on the second vertical axis combined milling cutter T2 include a fourth forming milling cutter and a fifth forming milling cutter, which are stacked in sequence from top to bottom, and the teeth on the fourth forming milling cutter include: surface B1, surface B2 and surface B3, which are connected in sequence, and the surface B1 and surface B3 are parallel to each other, respectively serving as the upper end surface and lower end surface of the tooth, and the surface B2 is arranged between the surface B1 and the surface B3, the upper end of the surface B2 is connected to the surface B1, and the lower end is inclined in the direction away from the center of the tooth and extends downward to the surface B3; the teeth on the fifth forming milling cutter include at least surface B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, Surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16, the surfaces B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16 are connected in sequence, the surface B4 and surface B16 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surfaces B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 are arranged between the surfaces B4 and B16, the upper end of the surface B5 is connected to the surface B4, and the lower end is inclined in the direction away from the center of the tooth and extends downward to the surface B6, the surface B6 The lower end of the surface B7 extends downwardly and tilted in a direction away from the inside of the tooth to a surface B7, which is perpendicular to the surface B4, and the lower end of which extends to the surface B8. The lower end of the surface B8 extends downwardly and tilted in a direction close to the inside of the tooth to a surface B9, which is perpendicular to the surface B4, and the lower end of the surface B9 extends to the surface B10. The lower end of the surface B10 extends downwardly and tilted in a direction away from the inside of the tooth to a surface B11, which is perpendicular to the surface B4, and the lower end of the surface B11 extends to the surface B12. The lower end of the surface B12 extends downwardly and tilted in a direction away from the center of the tooth to a surface B13. The lower end of the surface B13 extends downwardly and tilted in a direction away from the inside of the tooth to a surface B14, which is perpendicular to the surface B4. 4, one end of the surface B14 away from B13 extends horizontally to surface B15 in a direction away from the inside of the cutter teeth, the surface B15 is perpendicular to the surface 4, the lower end of the surface B15 extends to surface B16, the surface B1 and the surface B4 are parallel to each other, the surface B3 and the surface B4 are tightly abutted, so that when the second vertical axis combined milling cutter T2 cuts the target floor, the surface B2, the surface B4, the surface B5, the surface B6, the surface B7, the surface B8, the surface B9, the surface B10, the surface B11, the surface B12, the surface B13, the surface B14, and the surface B15 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U2 by the second vertical axis combined milling cutter T2;

[0140] The forming milling cutter on the third combined vertical axis milling cutter T3 includes a sixth forming milling cutter, wherein the teeth on the sixth forming milling cutter at least include: surface D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10, the surfaces D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10 are connected in sequence, the surface D1 and the surface D10 are parallel to each other, respectively serving as the upper end surface and the lower end surface of the tooth, the surface D2 , surface D3, surface D4, surface D5, surface D6, surface D7, surface D8 and surface D9 are arranged between surface D1 and surface D10, the upper end of surface D2 is connected to surface D1, and the lower end is inclined downwardly extending to surface D3 in the direction away from the inside of the blade tooth, one end of surface D3 is connected to the lower end of surface D2, and the other end is inclined upwardly extending to surface D4 in the direction away from the inside of the blade tooth, the upper end of surface D4 is connected to surface D3, and the lower end is inclined downwardly extending to surface D5 in the direction away from the inside of the blade tooth, and the surface D2 is connected to surface D4. The upper end of the surface D5 is connected to the surface D4, and the other end is inclined downwardly extending to the surface D6 in a direction away from the inside of the blade tooth. The upper end of the surface D6 is connected to the surface D5, and the lower end is inclined downwardly extending to the surface D7 in a direction away from the inside of the blade tooth. The surface D6 is parallel to the surface D4, the upper end of the surface D7 is connected to the surface D6, and the other end is inclined downwardly extending to the surface D8 in a direction away from the inside of the blade tooth. The upper end of the surface D8 is connected to the surface D7, and the other end is inclined downwardly extending to the surface D9 in a direction away from the inside of the blade tooth. , the upper end of the surface D9 is connected to the surface D8, and the other end is inclined downward and extends to the surface D10 in the direction away from the inside of the cutter teeth, and the surface D9 is perpendicular to the surface D6, so that when the third vertical axis combined milling cutter T3 cuts the target floor, the surface D2, the surface D3, the surface D4, the surface D5, the surface D6, the surface D7, the surface D8, the surface D9 and the surface D10 can leave the cut surfaces connected end to end on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U3 by the third vertical axis combined milling cutter T3;

[0141] The forming milling cutters on the fourth vertical axis combined milling cutter T4 include a seventh forming milling cutter and an eighth forming milling cutter, and the seventh forming milling cutter and the eighth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the seventh forming milling cutter at least include: surface E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7, and the surfaces E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7 are connected in sequence, and the surface E1 and the surface E7 are parallel to each other and serve as the upper end surface and the lower end surface of the teeth, respectively. The surface E2, surface E3, surface E4, surface E5 and surface E6 are arranged between the surface E1 and the surface E7. The upper end of the surface E2 is connected to the surface E1, and the lower end extends downward to the surface E3, and the surface E2 is perpendicular to the surface E1. The upper end of the surface E3 is connected to the surface E2, and the lower end extends downward to the surface E4 in a direction away from the inside of the blade tooth. The upper end of the surface E4 is connected to the surface E3, and the lower end extends downward to the surface E5 in a direction away from the inside of the blade tooth. One end of the surface E5 is connected to the surface E4, and the other end extends downward to the surface E5 in a direction away from the inside of the blade tooth. The direction of the inside of the tooth is inclined upward to the surface E6, the upper end of the surface E6 is connected to the surface E5, and the lower end is inclined downward to the surface E7 in the direction close to the inside of the tooth; the tooth on the eighth forming milling cutter at least includes: surface E8, surface E9 and surface E10, the surface E8, surface E9 and surface E10 are connected in sequence, the surface E8 and surface E10 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surface E9 is arranged between the surface E8 and the surface E10, and the upper end of the surface E9 is connected to the surface E8, The lower end is inclined toward the direction close to the inside of the cutter teeth and extends downward to the surface E10, the surfaces E6 and E9 are inclined at the same angle, the surfaces E1 and E10 are parallel to each other, and the surfaces E7 and E8 are closely adjacent to each other, so that when the fourth vertical axis combined milling cutter T4 cuts the target floor, the surfaces E2, E3, E4, E5, E6 and E9 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U4 by the fourth vertical axis combined milling cutter T4;

[0142] The forming milling cutters on the fifth vertical axis combination milling cutter T5 include a ninth forming milling cutter and a tenth forming milling cutter, and the ninth forming milling cutter and the tenth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the ninth forming milling cutter at least include: a surface F1, a surface F2 and a surface F3, the surfaces F1, F2 and F3 are connected in sequence, the surfaces F1 and F3 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth, the surface F2 is arranged between the surfaces F1 and F3, the upper end of the surface F2 is connected to the surface F1, and the lower end is inclined toward the direction close to the inside of the tooth and extends downward to the surface F3, the teeth on the tenth forming milling cutter at least include: a surface F4, a surface F5, a surface F6, a surface F7, a surface F8 and a surface F9, the surfaces F4, F5, F6, F7, F8 and F9 are connected in sequence, the surfaces F4 and F9 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth, the The surface F5, surface F6, surface F7 and surface F8 are arranged between surface F4 and surface F9, the surface F5 is perpendicular to surface F4, and its lower end extends downward to surface F6, the upper end of surface F6 is connected to surface F5, and the lower end extends downward to surface F7 at an angle away from the inside of the cutter teeth, the surface F7 is parallel to surface F4, one end of surface F7 is connected to surface F6, and the other end extends horizontally to surface F8 in a direction away from the inside of the cutter teeth, the surface F8 is perpendicular to surface F4, and its lower end extends downward to surface F9, the surface F1 is parallel to surface F9, and the surface F3 is closely adjacent to the surface F4, so that when the fifth vertical axis combined milling cutter T5 cuts the target floor, the surfaces F2, surface F5, surface F6, surface F7 and surface F8 can leave cut surfaces that are sequentially connected end to end on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U5 by the first vertical axis combined milling cutter T5;

[0143] The forming milling cutter on the sixth vertical axis combined milling cutter T6 includes an eleventh forming milling cutter, and the teeth of the eleventh forming milling cutter at least include: surface G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12, the surfaces G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12 are connected in sequence, the surface G1 and the surface G12 are parallel to each other, respectively serving as the upper end surface and the lower end surface of the tooth, and the surface G 2. Surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10 and surface G11 are arranged between surface G1 and surface G12, the upper end of surface G2 is connected to surface G1, and the lower end is inclined downwardly extending to surface G3 in a direction away from the inside of the blade tooth, one end of surface G3 is connected to surface G2, and the other end is horizontally extended to surface G4 in a direction close to the inside of the blade tooth, and surface G3 is parallel to surface G1, the upper end of surface G4 is connected to surface G3, and the lower end is inclined downwardly extending to surface G5 in a direction close to the inside of the blade tooth, and the upper end of surface G5 is connected to surface G2, and the other end is horizontally extended to surface G4 in a direction close to the inside of the blade tooth, and the surface G3 is parallel to surface G1, The upper end of the surface G7 is connected to the surface G6, and the lower end thereof is inclined downwardly extended to the surface G8 in the direction away from the inside of the blade tooth. The upper end of the surface G8 is connected to the surface G7, and the lower end thereof is inclined downwardly extended to the surface G9 in the direction away from the inside of the blade tooth. One end of the surface G9 is connected to the surface G8, and the other end thereof is horizontally extended to the surface G10 in the direction away from the inside of the blade tooth. The surface G9 is parallel to the surface G1, and the surface G10 is parallel to the surface G10. G1 is vertical, the lower end of the surface G10 extends downward to the surface G11, the upper end of the surface G11 is connected to the surface G10, and the lower end of the surface G11 is inclined toward the direction close to the inside of the cutter teeth and extends downward to the surface G12, so that when the sixth vertical axis combined milling cutter T6 cuts the target floor, the surface G1, the surface G2, the surface G3, the surface G4, the surface G5, the surface G6, the surface G7, the surface G8, the surface G9, the surface G10 and the surface G11 can leave the cut surfaces connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U6 by the sixth vertical axis combined milling cutter T6;

[0144] The forming milling cutter on the seventh vertical axis combined milling cutter T7 includes a twelfth forming milling cutter and a thirteenth forming milling cutter, the twelfth forming milling cutter and the thirteenth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twelfth forming milling cutter at least include: surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8, the surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8 are connected in sequence, the surface H1 and surface H8 are parallel to each other, and are respectively used as teeth The upper end face and the lower end face of the knife teeth are connected to each other, the face H2, the face H3, the face H4, the face H5, the face H6 and the face H7 are arranged between the face H1 and the face H8, the face H2 is perpendicular to the face H1, and its lower end extends downward to the face H3, the upper end of the face H3 is connected to the face H2, and the lower end extends downward to the face H4 in an inclined direction close to the inside of the knife teeth, the upper end of the face H4 is connected to the face H3, and the lower end extends downward to the face H5 in an inclined direction close to the inside of the knife teeth, one end of the face H5 is connected to the face H4, and the other end extends downward to the face H5 in an inclined direction close to the inside of the knife teeth The upper end of the surface H6 is connected to the surface H5, and the lower end of the surface H6 is inclined downward to the surface H7 in the direction close to the inside of the tooth. The surface H7 is perpendicular to the surface H1, and the lower end thereof extends to the surface H8; the tooth on the thirteenth forming milling cutter at least includes: a surface H9, a surface H10 and a surface H11, the surface H9 and the surface H11 are parallel to each other, and serve as the upper end surface and the lower end surface of the tooth respectively, the surface H10 is arranged between the surface H9 and the surface H11, and the The surface H7 and the surface H10 are located in the same vertical plane, the surface H10 is perpendicular to the surface H9, the surface H1 is parallel to the surface H11, and the surface H8 is tightly against the surface H9, so that when the seventh vertical axis combined milling cutter T7 cuts the target floor, the surface H1, the surface H2, the surface H3, the surface H4, the surface H5, the surface H6, the surface H7 and the surface H10 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U7 by the seventh vertical axis combined milling cutter T7;

[0145] The forming milling cutters on the eighth vertical axis combined milling cutter T8 include a fourteenth forming milling cutter and a fifteenth forming milling cutter, the fourteenth forming milling cutter and the fifteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the fourteenth forming milling cutter at least include: a surface I1, a surface I2 and a surface I3, the surface I1 and the surface I3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface I2 is located between the surface I1 and the surface I3, the surface I2 is perpendicular to the surface I1, and the upper end of the surface I2 is connected to the surface I1, and the lower end is connected to the surface I3, the cutter teeth on the fifteenth forming milling cutter at least include: a surface I4, a surface I5 and a surface I6, the surface I 4 and surface I6 are parallel to each other and serve as the upper end surface and lower end surface of the cutter teeth respectively, the surface I5 is located between the surface I4 and the surface I6, the surface I5 is perpendicular to the surface I4, and the upper end of the surface I5 is connected to the surface I4 and the lower end is connected to the surface I6, the surface 12 and the surface 15 are located in the same vertical plane, the surface I1 is parallel to the surface I6, and the surface I3 is closely adjacent to the surface I4, so that when the eighth vertical axis combined milling cutter T8 cuts the target floor, the surface I2 and the surface I5 can leave the cut surfaces connected end to end on the target floor, so as to realize the processing of the locking connection surface profile in the eighth vertical axis combined milling cutter T8 in the composite floor processing step U8;

[0146] The forming milling cutter on the ninth vertical axis combination milling cutter T9 includes a sixteenth forming milling cutter, and the teeth on the sixteenth forming milling cutter at least include: a surface J1, a surface J2, a surface J3 and a surface J4, the surfaces J1, J2, J3 and J4 are connected in sequence, the surfaces J1 and J4 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surfaces J2 and J3 are both located between the surfaces J1 and J4, the upper end of the surface J2 is connected to the surface J1, and the lower end is inclined downwardly and extends to the surface J3 in a direction away from the inside of the teeth, the upper end of the surface J3 is connected to the surface J2, and the lower end is inclined downwardly and extends to the surface J4 in a direction close to the inside of the teeth, so that when the ninth vertical axis combination milling cutter T8 cuts the target floor, the surfaces J2, J3 and J4 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U9 by the ninth vertical axis combination milling cutter T9;

[0147] The forming milling cutters on the tenth vertical axis combined milling cutter T10 include a seventeenth forming milling cutter and an eighteenth forming milling cutter, the seventeenth forming milling cutter and the eighteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the seventeenth forming milling cutter at least include: a surface K1, a surface K2 and a surface K3, the surfaces K1, K2 and K3 are connected in sequence, the surfaces K1 and K3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface K2 is located between the surfaces K1 and K3, the upper end of the surface K2 is connected to the surface K1, and the lower end is inclined in a direction away from the inside of the cutter teeth and extends downward to the surface K3, the surface K2 and the surface K1 are connected. The angle between them is 105-150°, and the teeth on the eighteenth forming milling cutter at least include: surface K4, surface K5, surface K6, surface K7, surface K8, surface K9, surface K10, surface K11 and surface K12, and the surfaces K4, surface K5, surface K6, surface K7, surface K8, surface K9, surface K10, surface K11 and surface K12 are connected in sequence, and the surface K4 and surface K12 are parallel to each other and serve as the upper end surface and lower end surface of the tooth respectively, and the surfaces K5, surface K6, surface K7, surface K8, surface K9, surface K10 and surface K11 are located between the surfaces K4 and K12, and the upper end of K5 is connected to the surface K4, and the lower end surface of K12 is connected to the surface K4. The upper end of K6 is connected to the surface K5, and the lower end is connected to the surface K7, which is connected to the surface K6, and the lower end is connected to the surface K8, which is connected to the surface K7, and the lower end is connected to the surface K8, which is connected to the surface K7, and the lower end is connected to the surface K9, which is parallel to the surface K4, and one end of the surface K9 is connected to the surface K8, and the other end is connected to the surface K10, which is connected to the surface K9, and the upper end of the surface K10 is connected to the surface K9, and the lower end is connected to the surface K9. The inner direction is inclined downward to the surface K11, the upper end of the surface K11 is connected to the surface K10, and the lower end is inclined downward to the direction away from the inner part of the cutter tooth to the surface K12, the surface K1 and the surface K12 are parallel to each other, and the surface K3 and the surface K4 are tightly abutted, so that when the tenth vertical axis combined milling cutter T10 cuts the target floor, the surface K2, the surface K5, the surface K6, the surface K7, the surface K8, the surface K9, the surface K10 and the surface K11 can leave the cut surfaces connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the processing step U10 of the composite floor by the tenth vertical axis combined milling cutter T10;

[0148] The forming milling cutter on the eleventh vertical axis combined milling cutter T11 includes a nineteenth forming milling cutter, and the teeth on the nineteenth forming milling cutter at least include: a surface L1, a surface L2, a surface L3 and a surface L4, the surfaces L1, L2, L3 and L4 are connected in sequence, the surfaces L1 and L4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces L2 and L3 are both located between the surfaces L1 and L4, the upper end of the surface L2 is connected to the surface L1, and the lower end is inclined in a direction away from the inside of the teeth and extends downward to the surface L3, the surface L3 is perpendicular to the surface L4, so that when the eleventh vertical axis combined milling cutter T11 cuts the target floor, the surfaces L2 and L3 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U11 by the eleventh vertical axis combined milling cutter T11;

[0149] The forming milling cutter on the twelfth vertical axis combined milling cutter T12 includes a twentieth forming milling cutter, and the teeth on the twentieth forming milling cutter at least include: a surface M1, a surface M2, a surface M3 and a surface M4, wherein the surfaces M1, M2, M3 and M4 are connected in sequence, and the surfaces M1 and M4 are parallel to each other and serve as the upper end surface and the lower end surface of the teeth respectively, and the surfaces M2 and M3 are both located between the surfaces M1 and M4, and the upper end of the surface M2 is connected to the surface M1, and the lower end is inclined toward the direction close to the inside of the teeth and extends downward to the surface M3, and the surface M3 is perpendicular to the surface M4, so that when the twelfth vertical axis combined milling cutter T12 cuts the target floor, the surfaces M2 and M3 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U12 by the twelfth vertical axis combined milling cutter T12;

[0150] The forming milling cutter on the thirteenth vertical axis combined milling cutter T13 includes a twenty-first forming milling cutter, and the teeth on the twenty-first forming milling cutter at least include: a surface N1, a surface N2 and a surface N3, the surfaces N1, N2 and N3 are connected in sequence, the surfaces N1 and N4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surface N2 is located between the surface N1 and the surface N3, and the surface N2 is perpendicular to the surface N1, so that when the thirteenth vertical axis combined milling cutter T13 cuts the target floor, the surface N3 can leave a cut surface on the target floor, and when the thirteenth vertical axis combined milling cutter T13 cuts the target floor, it cuts through the surface N3; in addition, the other cutters use the surfaces mentioned except the upper end surface and the lower end surface for cutting.

[0151] The forming milling cutter on the fourteenth vertical axis combined milling cutter T14 includes a twenty-second forming milling cutter, and the teeth on the twenty-second forming milling cutter at least include: a surface O1, a surface O2, a surface O3 and a surface O4, the surfaces O1, O2, O3 and O4 are connected in sequence, the surfaces O1 and O4 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surfaces O2 and O3 are both located between the surfaces O1 and O4, the upper end of the surface O2 is connected to the surface O1, and the lower end is inclined downwardly extending to the surface O3 in a direction close to the inside of the teeth, the upper end of the surface O3 is connected to the surface O2, and the lower end is inclined downwardly extending to the surface O4 in a direction away from the inside of the teeth, so that when the fourteenth vertical axis combined milling cutter T14 cuts the target floor, the surfaces O2 and O3 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U14 by the fourteenth vertical axis combined milling cutter T14;

[0152] The forming milling cutters on the fifteenth vertical axis combined milling cutter T15 include a twenty-third forming milling cutter and a twenty-fourth forming milling cutter, the twenty-third forming milling cutter and the twenty-fourth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-third forming milling cutter at least include: surface P1, surface P2 and surface P3, the surfaces P1, surface P2 and surface P3 are connected in sequence, the surfaces P1 and surface P3 are parallel to each other, and serve as the upper end surface and lower end surface of the teeth respectively, the surface P2 is located between the surfaces P1 and P3, and the surface P2 is perpendicular to the surface P1, the teeth on the twenty-fourth forming milling cutter at least include: surface P4, surface P5 and surface P6, the Surface P4, surface P5 and surface P6 are connected in sequence, and the surface P4 and surface P6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutter teeth respectively. The surface P5 is located between the surface P4 and the surface P6, and the surface P5 is perpendicular to the surface P4. The surface P2 and the surface P5 are located in the same vertical plane. The surface P1 is parallel to the surface P6, and the surface P3 is closely adjacent to the surface P4, so that when the fifteenth vertical axis combined milling cutter T15 cuts the target floor, the surface P2 and the surface P5 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the composite floor processing step U15 by the fifteenth vertical axis combined milling cutter T15;

[0153] The forming milling cutters on the sixteenth vertical axis combination milling cutter T16 include the twenty-fifth forming milling cutter and the twenty-sixth forming milling cutter, the twenty-fifth forming milling cutter and the twenty-sixth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-fifth forming milling cutter at least include: surface Q1, surface Q2 and surface Q3, the surfaces Q1, surface Q2 and surface Q3 are connected in sequence, the surfaces Q1 and surface Q3 are parallel to each other, and serve as the upper end surface and lower end surface of the teeth respectively, the surface Q2 is located between the surfaces Q1 and Q3, and the surface Q2 is perpendicular to the surface Q1, the teeth on the twenty-fourth forming milling cutter at least include: surface Q4, surface Q5 and surface Q6 ... Q4, surface Q5 and surface Q6 are connected in sequence, the surface Q4 and surface Q6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface Q5 is located between the surface Q4 and the surface Q6, the surface Q5 is perpendicular to the surface Q4, the surface Q2 and the surface Q5 are located in the same vertical plane, the surface Q1 is parallel to the surface Q6, and the surface Q3 is closely adjacent to the surface Q4, so that when the sixteenth vertical axis combined milling cutter T16 cuts the target floor, the surface Q2 and the surface Q5 can leave the cut surfaces connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile in the processing step U16 of the composite floor by the sixteenth vertical axis combined milling cutter T16;

[0154] The forming milling cutters on the seventeenth vertical axis combined milling cutter T17 include a twenty-seventh forming milling cutter and a twenty-eighth forming milling cutter, the twenty-seventh forming milling cutter and the twenty-eighth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-seventh forming milling cutter at least include: surface R1, surface R2 and surface R3, the surfaces R1, R2 and R3 are connected in sequence, the surfaces R1 and R3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface R2 is located between the surfaces R1 and R3, and the surface R2 is perpendicular to the surface R1, the teeth on the twenty-eighth forming milling cutter at least include: surfaces R4, R5 and R6, the surfaces R6 R4, surface R5 and surface R6 are connected in sequence, the surface R4 and surface R6 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface R5 is located between the surface R4 and the surface R6, the surface R5 is perpendicular to the surface R4, the surface R2 and the surface R5 are located in the same vertical plane, the surface R1 is parallel to the surface R6, and the surface R3 is closely adjacent to the surface R4, so that when the seventeenth vertical axis combined milling cutter T17 cuts the target floor, the surface R2 and the surface R5 can leave the cut surfaces connected end to end in sequence on the target floor, so as to realize the processing of the lock connection surface profile in the composite floor processing step U17 by the seventeenth vertical axis combined milling cutter T17;

[0155] The forming milling cutters on the eighteenth vertical axis combined milling cutter T18 include a twenty-ninth forming milling cutter and a thirtieth forming milling cutter, the twenty-ninth forming milling cutter and the thirtieth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-ninth forming milling cutter at least include: surface S1, surface S2 and surface S3, the surfaces S1, surface S2 and surface S3 are connected in sequence, the surfaces S1 and surface S3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface S2 is located between the surfaces S1 and S3, the surface S2 is perpendicular to the surface S1, the teeth on the thirtieth forming milling cutter at least include: surface S4, surface S5 and surface S6, the surface S 4. Surface S5 and surface S6 are connected in sequence, and the surface S4 and surface S6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutting teeth respectively. The surface S5 is located between the surface S4 and the surface S6, and the surface S5 is perpendicular to the surface S4. The surface S2 and the surface S5 are located in the same horizontal plane, the surface S1 is parallel to the surface S6, and the surface S3 is closely adjacent to the surface S4, so that when the eighteenth vertical axis combination milling cutter T18 cuts the target floor, the surface S2 and the surface S5 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to realize the processing of the locking connection surface profile of the composite floor processing step U18 by the eighteenth vertical axis combination milling cutter T18.

[0156] In this embodiment, for the convenience of representation, the composite floor is represented by the surface on which the milling cutter is used to cut. In addition, it should be noted that Figure 1-2 It can be seen that the odd-numbered forming milling cutters and the even-numbered forming milling cutters are respectively used to connect and process the two opposite sides of the same composite floor, and then the two wooden boards are spliced. When splicing, the side processed by the first milling cutter group is spliced ​​with the side processed by the second milling cutter group. It should be further explained that in this application, the processing is carried out in sequence according to the numbering order of the forming milling cutters, forward milling or reverse milling or a combination of the two, but the subsequent processing is based on the previous processing.

[0157] In addition, the "U" above is used to indicate the cutting surface of each forming milling cutter when processing the composite floor, and the number in the subscript indicates the serial number of the corresponding forming milling cutter and the processing step. Fig.42 The content marked in the figure is the corresponding milling cutter surface when the surface on the wooden board is finally formed. It can be simply understood as: Fig.42 In the figure, the marking on the composite floor corresponds to the milling cutter surface that completes the last cut on that surface.

[0158] Each forming milling cutter is provided with 6 teeth, the material of the teeth is high-speed steel, the diameter of the forming milling cutter body is set to 250mm, and in each vertical axis combination milling cutter composed of at least two forming milling cutters, the teeth between each layer of forming milling cutters are spaced apart in the vertical direction.

[0159] The bottoms of the teeth of the vertical shaft combined milling cutter composed of a plurality of forming milling cutters are in the same horizontal plane.

[0160] like Fig.46 As shown: the target processed floor comprises a balancing layer a, a base material layer b, a decorative layer c and a wear-resistant layer d, and the balancing layer a, the base material layer b, the decorative layer c and the wear-resistant layer d are fixedly stacked in sequence from top to bottom;

[0161] The teeth of the first forming milling cutter, the fourth forming milling cutter, the ninth forming milling cutter and the seventeenth forming milling cutter are made of cemented carbide, and the profile of the teeth of the milling cutter corresponds to the locking connection surface of the balancing layer a to be cut by the teeth. The size of the teeth should extend 0.2mm from the locking connection surface of the stone-plastic composite floor to be processed in the axial direction and 2mm from the locking connection surface of the stone-plastic composite floor to be processed in the radial direction, so as to cut the balancing layer a;

[0162] The teeth of the second, fifth, sixth, seventh, tenth, eleventh, twelfth, fourteenth, sixteenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fifth, twenty-seventh and twenty-ninth forming milling cutters are made of CVD diamond, and the tooth profile of the milling cutter corresponds to the locking connection surface of the substrate layer b to be cut by the tooth. The tooth size extends 0.2 mm from the locking connection surface of the stone-plastic composite floor to be processed in the axial direction and is 2 mm away from the locking connection surface of the stone-plastic composite floor to be processed in the radial direction, so as to cut the substrate layer b;

[0163] The teeth of the third forming milling cutter, the eighth forming milling cutter, the thirteenth forming milling cutter, the fifteenth forming milling cutter, the twenty-fourth forming milling cutter, the twenty-sixth forming milling cutter, the twenty-eighth forming milling cutter and the thirtieth forming milling cutter are made of polycrystalline diamond, and the profile of the milling cutter teeth corresponds to the locking connection surfaces of the decorative layer c and the wear-resistant layer d to be cut by the teeth. The size of the teeth should extend 0.2mm beyond the locking connection surface of the stone-plastic composite floor to be processed in the axial direction and be 2mm away from the locking connection surface of the stone-plastic composite floor to be processed in the radial direction, so as to cut the decorative layer c and the wear-resistant layer d.

[0164] In this embodiment, CVD diamond is used as the material of the blade teeth for cutting the substrate layer b, polycrystalline diamond is used as the material of the blade teeth for cutting the decorative layer c and the wear-resistant layer d, and cemented carbide YG6 is used as the material of the blade teeth for cutting the balancing layer a; CVD diamond has superhard wear resistance and good toughness, and is suitable for processing non-metallic materials. In addition, CVD diamond blade teeth have good sharpness, and excellent surface quality of the substrate layer b can be obtained during processing; polycrystalline diamond has extremely high hardness, and can easily cut the aluminum oxide of the wear-resistant layer d, and the surface of polycrystalline diamond is smooth, and the friction coefficient is low, During the processing of wooden flooring, the friction with the material is small, which helps to reduce the cutting force and processing heat, and avoid the problems of wood hair and fiber tearing in the decorative layer c veneer; cemented carbide YG6 has a high thermal conductivity, which allows it to dissipate heat quickly, while the balancing layer a ethylene-vinyl acetate copolymer will generate a lot of heat during the cutting process, which can easily cause the material to melt or deform. Cemented carbide YG6 can effectively conduct the heat away, reduce the temperature rise in the processing area, and avoid the problem of uneven processing surface of the balancing layer a ethylene-vinyl acetate copolymer of the stone plastic composite floor. Avoiding the uneven processing surface of the balancing layer a ethylene-vinyl acetate copolymer of the stone plastic composite floor and the problems of wood hair and fiber tearing in the decorative layer c veneer further improves the assembly accuracy of the stone plastic composite floor.

[0165] The surfaces of the decorative layer c and the wear-resistant layer d processed by polycrystalline diamond have good processing quality. When the stone-plastic composite floor is spliced, the fine-processed surfaces S2, S5 and R2, R5 can achieve seamless splicing, which can prevent dust and other debris from entering after the stone-plastic composite floor is paved; the fine-processed surfaces K2 and F2 are inclined surfaces, which form a triangular space with the ground after assembly. This is to reserve deformation space for the balance layer a after it is deformed by heat, so as to avoid warping of the stone-plastic composite floor after paving.

[0166] like Figure 3 , 4 , 5, 43, 44, 45 and 46: the low-temperature injection device injects CO2 or mist lubricant.

[0167] As shown in the figure: the low-temperature spraying device includes 1 or 2 spraying units 2, the spraying unit 2 is provided with an air intake pipe 3 and a spraying pipe 4, one end of the spraying pipe 4 is connected to the air intake pipe 3, and the end surface of the other end is covered with a spraying net 5, the spraying net 5 is covered with a nozzle cap 6, and the nozzle cap 6 is provided on the spraying pipe 4;

[0168] A flow valve 7 is provided in the injection pipe 4, and the flow valve 7 includes a valve core 71, a sealing member 72, a valve stem 73 and a valve handle 74. The valve core 71 can abut against the inner wall of the injection pipe 4, and the sealing member 72 is located between the valve core 71 and the inner wall of the injection pipe 4, and the sealing member 72 is provided on the valve core 71. One end of the valve stem 73 is connected to the valve core 71, and the other end extends out of the injection pipe 4 and is connected to the valve handle 74. The valve stem 73 and the valve core 71 are both rotatably connected to the injection pipe 4, so as to control the gas flow in the injection pipe 4.

[0169] Specifically, in this embodiment, the sealing member 72 is made of rubber, and the valve core 71X5 is a cylinder with a fitting surface on the side, and the fitting surface is used to embed and fix the sealing member 72; the inner side of the sealing member 72 is T-shaped, and the outer side is an arc-shaped; the valve stem 73X7 is integrally arranged with the valve core 71X5, and rotating the valve stem 73X7 can rotate the valve core 71X5 together, and the flow valve 7 is specifically arranged at one end of the injection pipe close to the intake pipe 3, and the intake pipe 3 is specifically arranged as a three-way pipe.

[0170] like Figure 3-5 As shown: the low-temperature injection device on one side of the first vertical axis combined milling cutter T1, the second vertical axis combined milling cutter T2, the third vertical axis combined milling cutter T3, the fourth vertical axis combined milling cutter T4, the sixth vertical axis combined milling cutter T6, the eighth vertical axis combined milling cutter T8, the ninth vertical axis combined milling cutter T9 and the tenth vertical axis combined milling cutter T10 injects CO2 gas;

[0171] The low-temperature spray device on one side of the fifth vertical axis combination milling cutter T5, the seventh vertical axis combination milling cutter T7, the eleventh vertical axis combination milling cutter T11, the twelfth vertical axis combination milling cutter T12, the thirteenth vertical axis combination milling cutter T13, the fourteenth vertical axis combination milling cutter T14, the fifteenth vertical axis combination milling cutter T15, the sixteenth vertical axis combination milling cutter T16, the seventeenth vertical axis combination milling cutter T17 and the eighteenth vertical axis combination milling cutter T18 sprays mist lubricant.

[0172] like Figure 3-5 As shown: when the low-temperature injection device injects supercritical CO2 gas, two injection units 2 are symmetrically distributed around the milling cutter, and the nozzle cap 6 faces the cutting area. The supercritical CO2 gas is injected into the cutting area through compressed air;

[0173] When spraying mist lubricant, the low-temperature spray device is provided with a spray unit 2, and the nozzle cap 6 points to the teeth to be cut of the milling cutter, and the mist lubricant is sprayed onto the teeth to be cut of the milling cutter through compressed air.

[0174] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0175] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that those skilled in the art can understand.

Claims

1. A low temperature processing device for locking buckles of stone plastic composite floor, characterized in that: include: A cutter shaft (1), wherein the cutter shaft (1) is a double-end milling cutter shaft (1); A milling cutter assembly, the milling cutter assembly comprising a first milling cutter group and a second milling cutter group, the first milling cutter group and the second milling cutter group are arranged opposite to each other and are respectively located on two sides of a target processing floor, and the first milling cutter group and the second milling cutter group are each composed of 9 types of vertical axis combined milling cutters, and the vertical axis combined milling cutters are respectively arranged on different cutter shafts (1); A low-temperature spraying assembly is provided on a cutter shaft (1), and the low-temperature spraying assembly is provided on one side of a vertical axis combined milling cutter.

2. A low temperature processing device for locking buckles of stone plastic composite flooring according to claim 1, characterized in that: The first milling cutter group includes: a first vertical axis combined milling cutter (T1), a third vertical axis combined milling cutter (T3), a fifth vertical axis combined milling cutter (T5), a seventh vertical axis combined milling cutter (T7), a ninth vertical axis combined milling cutter (T9), an eleventh vertical axis combined milling cutter (T11), a thirteenth vertical axis combined milling cutter (T13), a fifteenth vertical axis combined milling cutter (T15) and a seventeenth vertical axis combined milling cutter (T17), and the vertical axis combined milling cutters in the first milling cutter group are arranged in sequence; The second milling cutter group includes: a second vertical axis combined milling cutter (T2), a fourth vertical axis combined milling cutter (T4), a sixth vertical axis combined milling cutter (T6), an eighth vertical axis combined milling cutter (T8), a tenth vertical axis combined milling cutter (T10), a twelfth vertical axis combined milling cutter (T12), a fourteenth vertical axis combined milling cutter (T14), a sixteenth vertical axis combined milling cutter (T16) and an eighteenth vertical axis combined milling cutter (T18), and the vertical axis combined milling cutters in the second milling cutter group are arranged in sequence; The vertical axis combined milling cutters in the first milling cutter group and the second milling cutter group are sequentially arranged on two sides of the target processing floor opposite to each other.

3. A low temperature processing device for locking buckles of stone plastic composite flooring according to claim 2, characterized in that: The first vertical axis combined milling cutter (T1) is composed of three stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected to each other, so as to simultaneously process the locking connection surfaces of different layers of the composite floor; The third vertical axis combined milling cutter (T3), the sixth vertical axis combined milling cutter (T6), the ninth vertical axis combined milling cutter (T9), the eleventh vertical axis combined milling cutter (T11), the twelfth vertical axis combined milling cutter (T12), the thirteenth vertical axis combined milling cutter (T13) and the fourteenth vertical axis combined milling cutter (T14) are all composed of one forming milling cutter; The second vertical axis combined milling cutter (T2), the fourth vertical axis combined milling cutter (T4), the fifth vertical axis combined milling cutter (T5), the seventh vertical axis combined milling cutter (T7), the eighth vertical axis combined milling cutter (T8), the tenth vertical axis combined milling cutter (T10), the fifteenth vertical axis combined milling cutter (T15), the sixteenth vertical axis combined milling cutter (T16), the seventeenth vertical axis combined milling cutter (T17) and the eighteenth vertical axis combined milling cutter (T18) are all composed of two stacked forming milling cutters, the cutter bodies of the forming milling cutters are parallel to each other, and the forming milling cutters are connected to each other, so as to simultaneously process the locking connection surfaces of different layers of the composite floor.

4. The low-temperature processing device for locking buckles of stone-plastic composite flooring according to claim 3 is characterized in that: The forming milling cutter on the first vertical axis combined milling cutter (T1) includes a first forming milling cutter, a second forming milling cutter and a third forming milling cutter, the first forming milling cutter, the second forming milling cutter and the third forming milling cutter are stacked in sequence from top to bottom, the teeth on the first forming milling cutter at least include: surface A1, surface A2, surface A3, the surfaces A1, A2 and A3 are connected in sequence, the surfaces A1 and A3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface A2 is arranged between the surfaces A1 and A3, and the surfaces A2 is arranged between the surfaces A1 and A3. The upper end of A2 is connected to the surface A1, and the lower end is inclined toward the direction close to the inside of the tooth and extends downward to the surface A3; the tooth on the second forming milling cutter at least includes: surface A4, surface A5, surface A6, surface A7 and surface A8, and the surfaces A4, A5, A6, A7 and A8 are connected in sequence, wherein the surfaces A4 and A8 are parallel to each other and serve as the upper end surface and the lower end surface of the tooth respectively, and the surfaces A5, A6 and A7 are connected in sequence and arranged between the surfaces A4 and A8, and the surfaces A5 and A7 are The upper end of the surface A6 is perpendicular to the surface A4, and is connected to the lower end of the surface A5. The lower end of the surface A6 extends downwardly to the surface A7 in a direction away from the inside of the tooth and is connected to the upper end of the surface A7. The tooth on the third forming milling cutter includes at least: a surface A9, a surface A10 and a surface A11. The surfaces A9, A10 and A11 are connected in sequence, wherein the surface A9 and the surface A11 are parallel to each other and serve as the upper end surface and the lower end surface of the tooth, respectively. The surface A10 is arranged between the surfaces A9 and A11, and the surface A10 is connected to the surface A11. A9 is vertical; the surface A1, surface A4 and surface A9 are parallel to each other, the surface A7 and surface A10 are located in the same vertical plane, the surface A2 is tightly against the surface A4, and the surface A8 is tightly against the surface A9, so that when the first vertical axis combined milling cutter (T1) cuts the target floor, the surface A2, surface A5, surface A6, surface A7 and surface A10 can leave cut surfaces that are connected end to end in sequence on the target floor, so as to complete the processing of the locking connection surfaces of different layers of the composite floor by the first vertical axis combined milling cutter (T1); The forming milling cutter on the second vertical axis combined milling cutter (T2) includes a fourth forming milling cutter and a fifth forming milling cutter, the fourth forming milling cutter and the fifth forming milling cutter are stacked in sequence from top to bottom, the teeth on the fourth forming milling cutter include: surface B1, surface B2 and surface B3, the surfaces B1, B2 and B3 are connected in sequence, the surfaces B1 and B3 are parallel to each other, and serve as the upper end surface and lower end surface of the teeth respectively, the surface B2 is arranged between the surfaces B1 and B3, the upper end of the surface B2 is connected to the surface B1, and the lower end is inclined in a direction away from the center of the teeth and extends downward to the surface B3; the teeth on the fifth forming milling cutter include at least surfaces B4, B5, B6, B7, B8, B9, B10 , surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16, the surfaces B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 and surface B16 are connected in sequence, the surface B4 and surface B16 are parallel to each other, and serve as the upper end surface and lower end surface of the tooth respectively, the surfaces B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, surface B15 are arranged between the surface B4 and the surface B16, the upper end of the surface B5 is connected to the surface B4, and the lower end is inclined in the direction away from the center of the tooth and extends downward to the surface B6, the surface B6 The lower end of the surface B7 extends downwardly and tilted away from the inside of the tooth to surface B7, which is perpendicular to surface B4, and the lower end of which extends to surface B8. The lower end of surface B8 extends downwardly and tilted toward the inside of the tooth to surface B9, which is perpendicular to surface B4, and the lower end of surface B9 extends to surface B10. The lower end of surface B10 extends downwardly and tilted away from the inside of the tooth to surface B11, which is perpendicular to surface B4, and the lower end of surface B11 extends to surface B12. The lower end of surface B12 extends downwardly and tilted away from the center of the tooth to surface B13, and the lower end of surface B13 extends downwardly and tilted away from the inside of the tooth to surface B14, which is perpendicular to surface B14. B4, an end of the surface B14 away from B13 extends horizontally to surface B15 in a direction away from the inside of the cutter teeth, the surface B15 is perpendicular to surface 4, the lower end of the surface B15 extends to surface B16, the surface B1 and surface B4 are parallel to each other, the surface B3 and surface B4 are tightly abutted, so that when the second vertical axis combined milling cutter (T2) cuts the target floor, the surface B2, surface B4, surface B5, surface B6, surface B7, surface B8, surface B9, surface B10, surface B11, surface B12, surface B13, surface B14, and surface B15 can leave cut surfaces connected end to end on the target floor, so that the second vertical axis combined milling cutter (T2) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the third combined vertical axis milling cutter (T3) includes a sixth forming milling cutter, wherein the teeth on the sixth forming milling cutter at least include: surface D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10, the surfaces D1, surface D2, surface D3, surface D4, surface D5, surface D6, surface D7, surface D8, surface D9 and surface D10 are connected in sequence, the surface D1 and the surface D10 are parallel to each other, and serve as the upper end surface and the lower end surface of the tooth respectively, and the surface D 2. Surface D3, surface D4, surface D5, surface D6, surface D7, surface D8 and surface D9 are arranged between surface D1 and surface D10. The upper end of surface D2 is connected to surface D1, and the lower end is inclined downwardly extending to surface D3 in a direction away from the inside of the blade tooth. One end of surface D3 is connected to the lower end of surface D2, and the other end is inclined upwardly extending to surface D4 in a direction away from the inside of the blade tooth. The upper end of surface D4 is connected to surface D3, and the lower end is inclined downwardly extending to surface D5 in a direction away from the inside of the blade tooth. The surface D2 is connected to surface D10. 4, the upper end of the surface D5 is connected to the surface D4, and the other end is inclined downwardly extended to the surface D6 in the direction away from the inside of the blade tooth, the upper end of the surface D6 is connected to the surface D5, and the lower end is inclined downwardly extended to the surface D7 in the direction away from the inside of the blade tooth, and the surface D6 is parallel to the surface D4, the upper end of the surface D7 is connected to the surface D6, and the other end is inclined downwardly extended to the surface D8 in the direction away from the inside of the blade tooth, the upper end of the surface D8 is connected to the surface D7, and the other end is inclined downwardly extended to the surface D8 in the direction away from the inside of the blade tooth. 9, the upper end of the surface D9 is connected to the surface D8, and the other end is inclined downward and extends to the surface D10 in a direction away from the inside of the cutter teeth, and the surface D9 is perpendicular to the surface D6, so that when the third vertical axis combined milling cutter (T3) cuts the target floor, the surface D2, the surface D3, the surface D4, the surface D5, the surface D6, the surface D7, the surface D8, the surface D9 and the surface D10 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the third vertical axis combined milling cutter (T3) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the fourth vertical axis combined milling cutter (T4) includes a seventh forming milling cutter and an eighth forming milling cutter, and the seventh forming milling cutter and the eighth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the seventh forming milling cutter at least include: surface E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7, and the surfaces E1, surface E2, surface E3, surface E4, surface E5, surface E6 and surface E7 are connected in sequence, and the surface E1 and the surface E7 are parallel to each other and serve as the upper end surface and the lower end surface of the tooth, respectively. The surface E2, the surface E3, the surface E4, the surface E5 and the surface E6 are arranged between the surface E1 and the surface E7. The upper end of the surface E2 is connected to the surface E1, and the lower end extends downward to the surface E3, and the surface E2 is perpendicular to the surface E1. The upper end of the surface E3 is connected to the surface E2, and the lower end extends downward to the surface E4 in a direction away from the inside of the blade tooth. The upper end of the surface E4 is connected to the surface E3, and the lower end extends downward to the surface E5 in a direction away from the inside of the blade tooth. One end of the surface E5 is connected to the surface E4, and the other end extends away from the inside of the blade tooth. The tooth on the eighth forming milling cutter at least comprises: a surface E8, a surface E9 and a surface E10, the surface E8, the surface E9 and the surface E10 are connected in sequence, the surface E8 and the surface E10 are parallel to each other, and serve as the upper end face and the lower end face of the tooth respectively, the surface E9 is arranged between the surface E8 and the surface E10, and the upper end of the surface E9 is connected to the surface E8 , the lower end of the surface E6 and the surface E9 are inclined downwardly and extend toward the direction close to the inside of the cutter teeth to the surface E10, the inclination angles of the surfaces E6 and E9 are the same, the surfaces E1 and E10 are parallel to each other, and the surfaces E7 and E8 are closely adjacent to each other, so that when the fourth vertical axis combined milling cutter (T4) cuts the target floor, the surfaces E2, E3, E4, E5, E6 and E9 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fourth vertical axis combined milling cutter (T4) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the fifth vertical axis combined milling cutter (T5) includes a ninth forming milling cutter and a tenth forming milling cutter, and the ninth forming milling cutter and the tenth forming milling cutter are stacked in sequence from top to bottom, wherein the teeth on the ninth forming milling cutter at least include: a surface F1, a surface F2 and a surface F3, the surfaces F1, F2 and F3 are connected in sequence, the surfaces F1 and F3 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth, the surface F2 is arranged between the surfaces F1 and F3, the upper end of the surface F2 is connected to the surface F1, and the lower end is inclined toward the direction close to the inside of the tooth and extends downward to the surface F3, the teeth on the tenth forming milling cutter at least include: a surface F4, a surface F5, a surface F6, a surface F7, a surface F8 and a surface F9, the surfaces F4, F5, F6, F7, F8 and F9 are connected in sequence, the surfaces F4 and F9 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the tooth, The surfaces F5, F6, F7 and F8 are arranged between the surfaces F4 and F9, the surface F5 is perpendicular to the surface F4, and its lower end extends downward to the surface F6, the upper end of the surface F6 is connected to the surface F5, and the lower end extends downward to the surface F7 in an inclined direction away from the inside of the cutter teeth, the surface F7 is parallel to the surface F4, one end of the surface F7 is connected to the surface F6, and the other end extends horizontally to the surface F8 in a direction away from the inside of the cutter teeth, the surface F8 is perpendicular to the surface F4, and its lower end extends downward to the surface F9, the surface F1 is parallel to the surface F9, and the surface F3 is closely attached to the surface F4, so that when the fifth vertical axis combined milling cutter (T5) cuts the target floor, the surfaces F2, F5, F6, F7 and F8 can leave cut surfaces connected end to end on the target floor, so that the fifth vertical axis combined milling cutter (T5) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the sixth vertical axis combined milling cutter (T6) includes an eleventh forming milling cutter, and the teeth of the eleventh forming milling cutter at least include: surface G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12, the surfaces G1, surface G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10, surface G11 and surface G12 are connected in sequence, the surfaces G1 and G12 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, and the surfaces G2, surface G3, surface G4, surface G5, surface G6, surface G7, surface G8, surface G9, surface G10 and surface G11 are arranged between surface G1 and surface G12, the upper end of surface G2 is connected to surface G1, and the lower end is inclined downwardly extending to surface G3 in a direction away from the inside of the blade tooth, one end of surface G3 is connected to surface G2, and the other end is horizontally extended to surface G4 in a direction close to the inside of the blade tooth, and surface G3 is parallel to surface G1, the upper end of surface G4 is connected to surface G3, and the lower end is inclined downwardly extending to surface G5 in a direction close to the inside of the blade tooth, and the upper end of surface G5 The upper end of the surface G7 is connected to the surface G6, and the lower end thereof is inclined downwardly extended to the surface G8 in the direction away from the inside of the tooth. The upper end of the surface G8 is connected to the surface G7, and the lower end thereof is inclined downwardly extended to the surface G9 in the direction away from the inside of the tooth. One end of the surface G9 is connected to the surface G8, and the other end thereof is inclined downwardly extended to the surface G10 in the direction away from the inside of the tooth. The surface G9 is parallel to the surface G1, and the surface G10 is perpendicular to the surface G1. The surface G1 is vertical, the lower end of the surface G10 extends downward to the surface G11, the upper end of the surface G11 is connected to the surface G10, and the lower end of the surface G11 is inclined toward the direction close to the inside of the cutter teeth and extends downward to the surface G12, so that when the sixth vertical axis combined milling cutter (T6) cuts the target floor, the surface G1, the surface G2, the surface G3, the surface G4, the surface G5, the surface G6, the surface G7, the surface G8, the surface G9, the surface G10 and the surface G11 can leave cut surfaces connected end to end in sequence on the target floor, so that the sixth vertical axis combined milling cutter (T6) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the seventh vertical axis combined milling cutter (T7) includes a twelfth forming milling cutter and a thirteenth forming milling cutter, the twelfth forming milling cutter and the thirteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the twelfth forming milling cutter at least include: surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8, the surface H1, surface H2, surface H3, surface H4, surface H5, surface H6, surface H7 and surface H8 are connected in sequence, the surface H1 and surface H8 are parallel to each other, respectively as The upper end face and the lower end face of the blade tooth, the face H2, the face H3, the face H4, the face H5, the face H6 and the face H7 are arranged between the face H1 and the face H8, the face H2 is perpendicular to the face H1, and its lower end extends downward to the face H3, the upper end of the face H3 is connected to the face H2, and the lower end extends downward to the face H4 in an inclined direction close to the inside of the blade tooth, the upper end of the face H4 is connected to the face H3, and the lower end extends downward to the face H5 in an inclined direction close to the inside of the blade tooth, one end of the face H5 is connected to the face H4, and the other end is connected to the face H4. The direction of the inside of the tooth extends horizontally to the surface H6, and the surface H5 is parallel to the surface H1. The upper end of the surface H6 is connected to the surface H5, and the lower end is inclined downward to the direction close to the inside of the tooth to extend to the surface H7. The surface H7 is perpendicular to the surface H1, and its lower end extends to the surface H8; the tooth on the thirteenth forming milling cutter includes at least: surface H9, surface H10 and surface H11, the surface H9 and surface H11 are parallel to each other, respectively serving as the upper end surface and lower end surface of the tooth, and the surface H10 is arranged between the surface H9 and the surface H11 , the surface H7 and the surface H10 are located in the same vertical plane, the surface H10 is perpendicular to the surface H9, the surface H1 is parallel to the surface H11, and the surface H8 is tightly against the surface H9, so that when the seventh vertical axis combined milling cutter (T7) cuts the target floor, the surface H1, the surface H2, the surface H3, the surface H4, the surface H5, the surface H6, the surface H7 and the surface H10 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the seventh vertical axis combined milling cutter (T7) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutters on the eighth vertical axis combined milling cutter (T8) include a fourteenth forming milling cutter and a fifteenth forming milling cutter, the fourteenth forming milling cutter and the fifteenth forming milling cutter are stacked in sequence from top to bottom, the teeth on the fourteenth forming milling cutter at least include: surface I1, surface I2 and surface I3, the surface I1 and surface I3 are parallel to each other and serve as the upper end surface and lower end surface of the teeth respectively, the surface I2 is located between the surface I1 and the surface I3, the surface I2 is perpendicular to the surface I1, and the upper end of the surface I2 is connected to the surface I1, and the lower end is connected to the surface I3, the teeth on the fifteenth forming milling cutter at least include: surface I4, surface I5 and surface I6, the surface I6 I4 and surface I6 are parallel to each other and serve as the upper end surface and lower end surface of the cutting teeth respectively; the surface I5 is located between the surface I4 and the surface I6; the surface I5 is perpendicular to the surface I4; the upper end of the surface I5 is connected to the surface I4 and the lower end is connected to the surface I6; the surface 12 and the surface 15 are located in the same vertical plane; the surface I1 is parallel to the surface I6; the surface I3 is closely adjacent to the surface I4, so that when the eighth vertical axis combined milling cutter (T8) cuts the target floor, the surface I2 and the surface I5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the eighth vertical axis combined milling cutter (T8) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the ninth vertical axis combined milling cutter (T9) comprises a sixteenth forming milling cutter, and the teeth on the sixteenth forming milling cutter at least comprise: a surface J1, a surface J2, a surface J3 and a surface J4, wherein the surfaces J1, J2, J3 and J4 are connected in sequence, the surfaces J1 and J4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces J2 and J3 are both located between the surfaces J1 and J4, the upper end of the surface J2 is connected to the surface J1, and the lower end is inclined downwardly extending to the surface J3 in a direction away from the inside of the teeth, the upper end of the surface J3 is connected to the surface J2, and the lower end is inclined downwardly extending to the surface J4 in a direction close to the inside of the teeth, so that when the ninth vertical axis combined milling cutter (T8) cuts the target floor, the surfaces J2, J3 and J4 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the ninth vertical axis combined milling cutter (T9) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the tenth vertical axis combined milling cutter (T10) includes a seventeenth forming milling cutter and an eighteenth forming milling cutter, the seventeenth forming milling cutter and the eighteenth forming milling cutter are stacked in sequence from top to bottom, the cutter teeth on the seventeenth forming milling cutter at least include: a surface K1, a surface K2 and a surface K3, the surfaces K1, K2 and K3 are connected in sequence, the surfaces K1 and K3 are parallel to each other, and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface K2 is located between the surfaces K1 and K3, the upper end of the surface K2 is connected to the surface K1, and the lower end is inclined in a direction away from the inside of the cutter teeth and extends downward to the surface K3, the surface K2 and The angle between the surfaces K1 is 105-150°, and the teeth on the eighteenth forming milling cutter at least include: surfaces K4, K5, K6, K7, K8, K9, K10, K11 and K12, surfaces K4, K5, K6, K7, K8, K9, K10, K11 and K12 are connected in sequence, and the surface K4 and the surface K12 are parallel to each other and serve as the upper end surface and the lower end surface of the teeth respectively, and the surfaces K5, K6, K7, K8, K9, K10 and K11 are located between the surfaces K4 and K12, and the upper end of K5 is connected to the surface K4. The lower end of the blade K6 is connected to the surface K5, and the lower end of the blade K6 is connected to the surface K7, and the upper end of the blade K7 is connected to the surface K6, and the lower end of the blade K7 is connected to the surface K8, and the upper end of the blade K8 is connected to the surface K7, and the lower end of the blade K7 is connected to the surface K8, and the lower end of the blade K7 is connected to the surface K9, and the upper end of the blade K8 is connected to the surface K7, and the lower end of the blade K8 is connected to the surface K9, and the surface K9 is parallel to the surface K4. One end of the surface K9 is connected to the surface K8, and the other end of the surface K9 is connected to the surface K10, and the upper end of the surface K10 is connected to the surface K9, and the lower end of the surface K10 is connected to the surface K9. The surface K11 extends downwardly in an inclined direction close to the inside of the cutter teeth, the upper end of the surface K11 is connected to the surface K10, and the lower end extends downwardly in an inclined direction away from the inside of the cutter teeth to the surface K12, the surface K1 and the surface K12 are parallel to each other, and the surface K3 and the surface K4 are tightly abutted, so that when the tenth vertical axis combined milling cutter (T10) cuts the target floor, the surface K2, the surface K5, the surface K6, the surface K7, the surface K8, the surface K9, the surface K10 and the surface K11 can leave cut surfaces connected end to end in sequence on the target floor, so that the tenth vertical axis combined milling cutter (T1) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the eleventh vertical axis combined milling cutter (T11) comprises a nineteenth forming milling cutter, and the teeth on the nineteenth forming milling cutter at least comprise: a surface L1, a surface L2, a surface L3 and a surface L4, wherein the surfaces L1, L2, L3 and L4 are connected in sequence, the surfaces L1 and L4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces L2 and L3 are both located between the surfaces L1 and L4, the upper end of the surface L2 is connected to the surface L1, and the lower end is inclined in a direction away from the inside of the teeth and extends downward to the surface L3, the surface L3 is perpendicular to the surface L4, so that when the eleventh vertical axis combined milling cutter (T11) cuts the target floor, the surfaces L2 and L3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the eleventh vertical axis combined milling cutter (T11) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the twelfth vertical axis combined milling cutter (T12) includes a twentieth forming milling cutter, and the teeth on the twentieth forming milling cutter at least include: a surface M1, a surface M2, a surface M3 and a surface M4, wherein the surfaces M1, M2, M3 and M4 are connected in sequence, and the surfaces M1 and M4 are parallel to each other and serve as the upper end surface and the lower end surface of the teeth respectively, and the surfaces M2 and M3 are both located between the surfaces M1 and M4, and the upper end of the surface M2 is connected to the surface M1, and the lower end is inclined toward the direction close to the inside of the tooth and extends downward to the surface M3, and the surface M3 is perpendicular to the surface M4, so that when the twelfth vertical axis combined milling cutter (T12) cuts the target floor, the surfaces M2 and M3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the twelfth vertical axis combined milling cutter (T12) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the thirteenth vertical axis combined milling cutter (T13) includes a twenty-first forming milling cutter, and the teeth on the twenty-first forming milling cutter at least include: a surface N1, a surface N2 and a surface N3, the surfaces N1, N2 and N3 are connected in sequence, the surfaces N1 and N4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surface N2 is located between the surface N1 and the surface N3, and the surface N2 is perpendicular to the surface N1, so that when the thirteenth vertical axis combined milling cutter (T13) cuts the target floor, the surface N3 can leave a cut surface on the target floor, and the thirteenth vertical axis combined milling cutter (T13) is used to process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the fourteenth vertical axis combined milling cutter (T14) includes a twenty-second forming milling cutter, and the teeth on the twenty-second forming milling cutter at least include: a surface O1, a surface O2, a surface O3 and a surface O4, wherein the surfaces O1, O2, O3 and O4 are connected in sequence, the surfaces O1 and O4 are parallel to each other, and respectively serve as the upper end surface and the lower end surface of the teeth, the surfaces O2 and O3 are both located between the surfaces O1 and O4, the upper end of the surface O2 is connected to the surface O1, and the lower end is inclined downwardly extending to the surface O3 in a direction close to the inside of the teeth, the upper end of the surface O3 is connected to the surface O2, and the lower end is inclined downwardly extending to the surface O4 in a direction away from the inside of the teeth, so that when the fourteenth vertical axis combined milling cutter (T14) cuts the target floor, the surfaces O2 and O3 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fourteenth vertical axis combined milling cutter (T14) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutters on the fifteenth vertical axis combined milling cutter (T15) include a twenty-third forming milling cutter and a twenty-fourth forming milling cutter, the twenty-third forming milling cutter and the twenty-fourth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-third forming milling cutter at least include: a surface P1, a surface P2 and a surface P3, the surfaces P1, P2 and P3 are connected in sequence, the surfaces P1 and P3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface P2 is located between the surfaces P1 and P3, and the surface P2 is perpendicular to the surface P1, the teeth on the twenty-fourth forming milling cutter at least include: a surface P4, a surface P5 and a surface P6, The surface P4, surface P5 and surface P6 are connected in sequence, the surface P4 and surface P6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface P5 is located between the surface P4 and the surface P6, the surface P5 is perpendicular to the surface P4, the surface P2 and the surface P5 are located in the same vertical plane, the surface P1 is parallel to the surface P6, and the surface P3 is closely adjacent to the surface P4, so that when the fifteenth vertical axis combined milling cutter (T15) cuts the target floor, the surface P2 and the surface P5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the fifteenth vertical axis combined milling cutter (T15) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutters on the sixteenth vertical axis combined milling cutter (T16) include the twenty-fifth forming milling cutter and the twenty-sixth forming milling cutter, the twenty-fifth forming milling cutter and the twenty-sixth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-fifth forming milling cutter at least include: surface Q1, surface Q2 and surface Q3, the surfaces Q1, surface Q2 and surface Q3 are connected in sequence, the surfaces Q1 and surface Q3 are parallel to each other, and serve as the upper end surface and lower end surface of the teeth respectively, the surface Q2 is located between the surfaces Q1 and Q3, and the surface Q2 is perpendicular to the surface Q1, the teeth on the twenty-fourth forming milling cutter at least include: surface Q4, surface Q5 and surface Q6, the surfaces Q1, Q2 and Q3 are connected in sequence, the surfaces Q1 and ... connected in sequence, the surfaces Q1 and Q3 are parallel to each other, and serve as the upper end surface and lower end surface of the teeth respectively, the surface Q2 is located between the surfaces Q1 and Q3, and the surface Q2 is perpendicular to the surface Q1, the teeth on the twenty-fourth forming mill The surface Q4, surface Q5 and surface Q6 are connected in sequence, the surface Q4 and surface Q6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutting teeth respectively, the surface Q5 is located between the surface Q4 and the surface Q6, the surface Q5 is perpendicular to the surface Q4, the surface Q2 and the surface Q5 are located in the same vertical plane, the surface Q1 is parallel to the surface Q6, and the surface Q3 is closely adjacent to the surface Q4, so that when the sixteenth vertical axis combined milling cutter (T16) cuts the target floor, the surface Q2 and the surface Q5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the sixteenth vertical axis combined milling cutter (T16) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the seventeenth vertical axis combined milling cutter (T17) includes a twenty-seventh forming milling cutter and a twenty-eighth forming milling cutter, the twenty-seventh forming milling cutter and the twenty-eighth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-seventh forming milling cutter at least include: surface R1, surface R2 and surface R3, the surfaces R1, R2 and R3 are connected in sequence, the surfaces R1 and R3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface R2 is located between the surfaces R1 and R3, and the surface R2 is perpendicular to the surface R1, the teeth on the twenty-eighth forming milling cutter at least include: surface R4, surface R5 and surface R6 ... The surface R4, surface R5 and surface R6 are connected in sequence, the surface R4 and surface R6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutter teeth respectively, the surface R5 is located between the surface R4 and the surface R6, the surface R5 is perpendicular to the surface R4, the surface R2 and the surface R5 are located in the same vertical plane, the surface R1 is parallel to the surface R6, and the surface R3 is closely adjacent to the surface R4, so that when the seventeenth vertical axis combined milling cutter (T17) cuts the target floor, the surface R2 and the surface R5 can leave cut surfaces that are connected end to end in sequence on the target floor, so that the seventeenth vertical axis combined milling cutter (T17) can process the locking connection surfaces of different layers of the composite floor; The forming milling cutter on the eighteenth vertical axis combined milling cutter (T18) includes a twenty-ninth forming milling cutter and a thirtieth forming milling cutter, the twenty-ninth forming milling cutter and the thirtieth forming milling cutter are stacked in sequence from top to bottom, the teeth on the twenty-ninth forming milling cutter at least include: surface S1, surface S2 and surface S3, the surfaces S1, S2 and S3 are connected in sequence, the surfaces S1 and S3 are parallel to each other, and serve as the upper end surface and the lower end surface of the teeth respectively, the surface S2 is located between the surfaces S1 and S3, and the surface S2 is perpendicular to the surface S1, the teeth on the thirtieth forming milling cutter at least include: surface S4, surface S5 and surface S6, the Surface S4, surface S5 and surface S6 are connected in sequence, and the surface S4 and surface S6 are parallel to each other and serve as the upper end surface and the lower end surface of the cutting teeth respectively. The surface S5 is located between the surface S4 and the surface S6, and the surface S5 is perpendicular to the surface S4. The surface S2 and the surface S5 are located in the same horizontal plane. The surface S1 is parallel to the surface S6, and the surface S3 is closely adjacent to the surface S4, so that when the eighteenth vertical axis combination milling cutter (T18) cuts the target floor, the surface S2 and the surface S5 can leave cut surfaces that are connected end to end in sequence on the target floor, which is used for the seventeenth vertical axis combination milling cutter (T17) to process the locking connection surfaces of different layers of the composite floor.

5. The low temperature processing device for locking buckles of stone plastic composite floor according to claim 3 is characterized in that: Each of the forming milling cutters is provided with 6 teeth, the material of the teeth is high-speed steel, the diameter of the forming milling cutter body is set to 200-250 mm according to the thickness of the stone-plastic composite floor, and in each vertical axis combined milling cutter composed of at least two forming milling cutters, the teeth between each layer of forming milling cutters are spaced apart in the vertical direction.

6. The low-temperature processing device for locking buckles of stone-plastic composite flooring according to claim 4 is characterized in that: The target processed floor comprises a balancing layer (a), a base material layer (b), a decorative layer (c) and a wear-resistant layer (d), and the balancing layer (a), the base material layer (b), the decorative layer (c) and the wear-resistant layer (d) are fixedly stacked in sequence from top to bottom; The teeth of the first forming milling cutter, the fourth forming milling cutter, the ninth forming milling cutter and the seventeenth forming milling cutter are made of cemented carbide, the tooth profile of the milling cutter corresponds to the locking connection surface of the balancing layer (a) to be cut by the tooth, the tooth size extends 0.1-0.2mm from the locking connection surface of the stone plastic composite floor to be processed in the axial direction, and is 1-2mm away from the locking connection surface of the stone plastic composite floor to be processed in the radial direction, and is used to cut the balancing layer (a); The teeth of the second, fifth, sixth, seventh, tenth, eleventh, twelfth, fourteenth, sixteenth, eighteenth, nineteenth, twentieth, twenty-first, twenty-second, twenty-third, twenty-fifth, twenty-seventh and twenty-ninth forming milling cutters are made of CVD diamond, and the profile of the teeth of the milling cutter corresponds to the locking connection surface of the substrate layer (b) to be cut by the teeth. The size of the teeth should extend 0.1-0.2mm from the locking connection surface of the stone-plastic composite floor to be processed in the axial direction and be 1-2mm away from the locking connection surface of the stone-plastic composite floor to be processed in the radial direction, so as to cut the substrate layer (b); The teeth of the third forming milling cutter, the eighth forming milling cutter, the thirteenth forming milling cutter, the fifteenth forming milling cutter, the twenty-fourth forming milling cutter, the twenty-sixth forming milling cutter, the twenty-eighth forming milling cutter and the thirtieth forming milling cutter are made of polycrystalline diamond, and the profile of the milling cutter teeth corresponds to the locking connection surface of the decorative layer (c) and the wear-resistant layer (d) to be cut by the teeth. The size of the teeth should extend 0.1-0.2mm beyond the locking connection surface of the stone-plastic composite floor to be processed in the axial direction, 1-2mm away from the locking connection surface of the stone-plastic composite floor to be processed in the radial direction, and 2mm beyond the stone-plastic composite floor in the radial direction, so as to cut the decorative layer (c) and the wear-resistant layer (d).

7. A low temperature processing device for locking buckles of stone plastic composite flooring according to claim 2, 3, 4, 5 or 6, characterized in that: The low-temperature spraying device sprays CO2 or mist lubricant.

8. The low temperature processing device for locking buckles of stone plastic composite flooring according to claim 7 is characterized in that: The low-temperature spraying device comprises one or two spraying units (2), the spraying unit (2) is provided with an air intake pipe (3) and a spraying pipe (4), one end of the spraying pipe (4) is connected to the air intake pipe (3), and the end surface of the other end is covered with a spraying net (5), the spraying net (5) is covered with a nozzle cap (6), and the nozzle cap (6) is arranged on the spraying pipe (4); A flow valve (7) is arranged in the injection pipe (4), and the flow valve (7) comprises a valve core (71), a sealing member (72), a valve stem (73) and a valve handle (74); the valve core (71) can abut against the inner wall of the injection pipe (4); the sealing member (72) is located between the valve core (71) and the inner wall of the injection pipe (4), and the sealing member (72) is arranged on the valve core (71); one end of the valve stem (73) is connected to the valve core (71), and the other end extends out of the injection pipe (4) and is connected to the valve handle (74); the valve stem (73) and the valve core (71) are both rotatably connected to the injection pipe (4) and are used to control the gas flow in the injection pipe (4).

9. The low-temperature processing device for locking buckles of stone-plastic composite flooring according to claim 8, characterized in that: The low-temperature injection device on one side of the first vertical axis combined milling cutter (T1), the second vertical axis combined milling cutter (T2), the third vertical axis combined milling cutter (T3), the fourth vertical axis combined milling cutter (T4), the sixth vertical axis combined milling cutter (T6), the eighth vertical axis combined milling cutter (T8), the ninth vertical axis combined milling cutter (T9) and the tenth vertical axis combined milling cutter (T10) injects CO2 gas; The low-temperature spraying device on one side of the fifth vertical axis combination milling cutter (T5), the seventh vertical axis combination milling cutter (T7), the eleventh vertical axis combination milling cutter (T11), the twelfth vertical axis combination milling cutter (T12), the thirteenth vertical axis combination milling cutter (T13), the fourteenth vertical axis combination milling cutter (T14), the fifteenth vertical axis combination milling cutter (T15), the sixteenth vertical axis combination milling cutter (T16), the seventeenth vertical axis combination milling cutter (T17) and the eighteenth vertical axis combination milling cutter (T18) sprays mist lubricant.

10. A low temperature processing device for locking buckles of stone plastic composite flooring according to claim 9, characterized in that: When the low-temperature injection device injects supercritical CO2 gas, two injection units (2) are symmetrically distributed around the milling cutter, and the nozzle cap (6) faces the cutting area, and the supercritical CO2 gas is injected into the cutting area through compressed air; When the low-temperature spraying device sprays the mist lubricant, a spray unit (2) is provided, and the nozzle cap (6) points to the milling cutter teeth to be cut, and the mist lubricant is sprayed onto the milling cutter teeth to be cut through compressed air.

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