Cutting equipment of profile frame and forming method of supporting frame for doors and windows

Abstract

The invention discloses cutting equipment for a profile frame and a forming method for a supporting frame for doors and windows. The cutting equipment comprises a rack, a feeding positioning mechanism, a cutting positioning mechanism, a first cutting mechanism and a second cutting mechanism. A positioning sliding groove and a shearing groove are formed in the top of the cutting positioning mechanism, the shearing groove comprises first inclined faces arranged in a mirror symmetry mode, and a second inclination angle is formed between each first inclined face and the vertical direction. The first cutting mechanism comprises a cutting saw blade and a rotary transmission wheel set, saw teeth of the cutting saw blade are obliquely arranged downwards, the cutting saw blade is wound on the periphery of the rotary transmission wheel set, the cutting saw blade is driven by the rotary transmission wheel set to transmit, and a first inclination angle is always kept between the cutting saw blade and the vertical direction so as to cut the rib plate; the second cutting mechanism comprises a second lifting driving mechanism, a movable die and a horizontal telescopic driving mechanism, the movable die and the horizontal telescopic driving mechanism are driven by the second lifting driving mechanism to be close to or away from the cutting positioning mechanism, the movable die is provided with a stamping knife, and the horizontal telescopic driving mechanism is used for driving the stamping knife to reciprocate along the shearing groove and shear the profile body; the cutting track of the cutting saw blade intersects with the cutting track of the stamping knife. The splicing effect of the supporting frame can be improved, and meanwhile the assembling efficiency of the supporting frame can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting equipment, and in particular to a cutting device for a profile frame and a method for forming a support frame for doors and windows. Background Art

[0002] At present, the support frames for doors and windows are generally assembled by four profile frames and four frame assembly angle codes, and two adjacent profile frames are connected by the frame assembly angle codes.

[0003] Before assembling the existing profile frame, a saw blade cutting device is generally used to cut a bevel at the end of the profile frame to meet the accuracy and matching requirements.

[0004] However, on the one hand, the angle deviation caused by saw blade cutting can easily affect the subsequent splicing effect; on the other hand, this method of assembling four profile frames and four group frame corner codes is difficult to improve assembly efficiency.

[0005] Therefore, it is necessary to develop a cutting device for the support frames for doors and windows to help improve the splicing effect of the support frames and at the same time help improve the assembly efficiency of the support frames. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a cutting device for a profile frame, which can improve the splicing effect of the support frame and help improve the assembly efficiency of the support frame.

[0007] The technical problem to be solved by the present invention is also to provide a method for forming a support frame for doors and windows, which can improve the splicing effect of the support frame and help improve the assembly efficiency of the support frame.

[0008] In order to solve the above technical problems, the present invention provides a cutting device for a profile frame, wherein the profile frame comprises a profile body and a rib plate, wherein the profile body is provided with a circumferentially enclosed assembly cavity, wherein the rib plates are arranged in pairs on one side of the profile body, and an assembly groove is formed between the profile body and the rib plates; the cutting device comprises a frame, and a feeding positioning mechanism, a cutting positioning mechanism, a first cutting mechanism, and a second cutting mechanism arranged on the frame, wherein the first cutting mechanism and the second cutting mechanism are arranged in sequence along the feeding direction of the profile frame, and the cutting positioning mechanism is arranged opposite to the second cutting mechanism;

[0009] A positioning slot and a shearing slot are provided on the top of the cutting positioning mechanism. The shearing slot and the positioning slot are intersected and communicated. The positioning slot is adapted to the width of the profile body. The shearing slot includes a first inclined surface that is arranged in a mirror-symmetrical manner. The first inclined surface has a second inclination angle with the vertical direction.

[0010] The feeding and positioning mechanism is used to convey the profile frame to the positioning chute;

[0011] The first cutting mechanism comprises a cutting saw blade and a rotary transmission wheel set, wherein the saw teeth of the cutting saw blade are arranged obliquely downward, the cutting saw blade is wound around the outer periphery of the rotary transmission wheel set, the cutting saw blade is driven by the rotary transmission wheel set and always maintains a first inclination angle with the vertical direction to cut the rib plate;

[0012] The second cutting mechanism comprises a second lifting drive mechanism, a movable mold and a horizontal telescopic drive mechanism, wherein the movable mold and the horizontal telescopic drive mechanism are driven by the second lifting drive mechanism to move closer to or away from the cutting positioning mechanism, the movable mold is provided with a punching knife adapted to the shearing groove, and the horizontal telescopic drive mechanism is used to drive the punching knife to reciprocate along the shearing groove and shear the profile body;

[0013] The cutting track of the cutting saw blade intersects with the cutting track of the punching knife.

[0014] As an improvement of the above scheme, the rotary transmission wheel group includes a driven wheel and a driving wheel driven by a driving motor, the driven wheel and the driving wheel are arranged on both sides of the conveying track of the profile frame, the wheel surface of the driving wheel and the driven wheel are both round table surfaces that are wide at the top and narrow at the bottom, and the cutting saw blade is attached to the round table surface.

[0015] As an improvement of the above scheme, at least one of the driving wheel and the driven wheel is provided with a spirally arranged limiting groove on the wheel surface, the cutting saw blade is provided with a protrusion adapted to the limiting groove, and the rotary transmission wheel group drives the cutting saw blade to transmit and drives the cutting saw blade to rise and fall along the wheel surface.

[0016] As an improvement of the above solution, the first cutting mechanism further includes a first lifting drive mechanism, the rotary transmission wheel sets are all arranged on a lifting plate, and the lifting plate is driven to rise and fall by the first lifting drive mechanism.

[0017] As an improvement of the above solution, the rotary wheel group also includes an adaptive tensioning wheel, and an elastic telescopic member is provided on the lifting plate. The elastic telescopic member presses the adaptive tensioning wheel against the cutting saw blade to keep the cutting saw blade in a tensioned state.

[0018] As an improvement of the above solution, the first inclination angle is greater than the second inclination angle.

[0019] As an improvement of the above solution, a second preset distance is provided between the shearing groove and the groove bottom of the positioning sliding groove.

[0020] As an improvement of the above solution, second inclined surfaces are symmetrically provided on both sides of the notch of the shear groove, and the angle between the second inclined surfaces is smaller than the angle between the first inclined surfaces.

[0021] As an improvement of the above-mentioned scheme, the feeding positioning mechanism includes a sliding trolley and a clamping arm, the frame is provided with a guide rail, and the sliding trolley is provided with a servo motor for driving it to slide on the guide rail at a fixed length; the clamping arm corresponds to the positioning slide groove and is connected to the sliding trolley, and the clamping arm clamps the profile frame so that the sliding trolley can convey the profile frame in a direction.

[0022] In addition, the present invention also provides a method for forming a support frame for doors and windows based on the cutting device of the profile frame, which comprises the following steps:

[0023] (1) The feeding mechanism conveys the profile frame in a directional manner according to a predetermined size, and the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade to transmit and descend, so that the cutting saw blade tilts to cut the rib plate;

[0024] (2) The rotary transmission wheel group drives the cutting saw blade to rise and reset;

[0025] (3) The feeding mechanism continues to convey the profile frame in a directional manner according to the predetermined size, and the second lifting drive mechanism of the second cutting mechanism drives the horizontal telescopic drive mechanism and the movable mold to descend. When the movable mold descends to the point where the punch cuts through the top surface of the profile body and the punch cuts tangent to the shearing groove, the horizontal telescopic drive mechanism drives the punch cutter to reciprocate in the shearing groove to shear the two side walls of the profile body; at the same time, the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade to drive and descend, so that the cutting saw blade tilts to cut the rib plate at the next cutting position of the profile frame;

[0026] (4) The feeding mechanism continues to directional-feed the profile frame according to the predetermined size, and the second lifting drive mechanism drives the horizontal telescopic drive mechanism and the movable mold to reset; at the same time, the rotary transmission wheel group drives the cutting saw blade to rise and reset;

[0027] (5) Repeat steps (3) and (4) several times.

[0028] The implementation of the present invention has the following beneficial effects:

[0029] The present invention provides a cutting device for a profile frame, which can avoid the situation that the rib plate is warped and the profile body is deformed by directly punching and shearing the entire profile frame by sawing the rib plate first and then shearing the profile body.

[0030] At the same time, compared with directly sawing the entire profile frame, the sawing thickness is small, which reduces the difficulty of sawing;

[0031] In addition, the combination of sawing and shearing reduces the impact of sawing accuracy on the quality of splicing. The shearing surface of the profile body has a standard forming angle, good workpiece consistency, and good splicing quality. On the other hand, the shearing of the profile body allows the profile frame to be directly bent and spliced, reducing the amount of frame corners and welding workload, which can help improve the efficiency of splicing and assembly.

[0032] The sawing uses a cutting saw blade wrapped around the outer circumference of the rotary transmission wheel group, which can form two cutting tracks synchronously to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of a profile frame of the present invention;

[0034] Figure 2 It is a structural schematic diagram of an embodiment of a cutting device for a profile frame of the present invention;

[0035] Figure 3 is a structural schematic diagram of a first cutting mechanism;

[0036] Figure 4 It is a schematic diagram of the longitudinal section structure of the driving wheel and the cutting saw blade;

[0037] Figure 5 It is a schematic diagram of the structure of the moving mold of the cutting positioning mechanism and the second cutting mechanism;

[0038] Figure 6 yes Figure 1 A schematic diagram of the structure of the profile frame after being cut by the first cutting mechanism;

[0039] Figure 7 yes Figure 6 Schematic diagram of the structure of the profile frame after being cut by the second cutting mechanism. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the present invention provides an embodiment of a cutting device for a profile frame. The cutting device is aimed at a profile frame 1 having a structure including a profile body 11 and a rib plate 12, and can improve the splicing effect of a support frame while helping to improve the assembly efficiency of the support frame.

[0042] The specific structure of the profile frame 1 is as follows: a circumferentially enclosed assembly cavity 13 is provided in the profile body 11, the ribs 12 are arranged in pairs on one side of the profile body 11, and an assembly groove 14 is formed between the profile body 11 and the ribs 12. The assembly cavity 13 is generally used to install the frame corner bracket, and the assembly groove 14 is generally used to assemble with the door and window body.

[0043] like Figures 2 to 5 As shown, the cutting equipment of this embodiment specifically includes a frame 2, and a feeding positioning mechanism 3, a cutting positioning mechanism 4, a first cutting mechanism, and a second cutting mechanism arranged on the frame 2. The first cutting mechanism and the second cutting mechanism are arranged in sequence along the feeding direction of the profile frame 1, and the cutting positioning mechanism 4 is arranged opposite to the second cutting mechanism.

[0044] A positioning groove 41 and a shearing groove 42 are provided on the top of the cutting positioning mechanism 4. The shearing groove 42 is cross-connected with the positioning groove 41. The positioning groove 41 is adapted to the width of the profile body 11. The shearing groove 42 includes a first inclined surface 421 arranged in a mirror-symmetrical manner. The first inclined surface 421 has a second inclination angle with the vertical direction.

[0045] The feeding and positioning mechanism 3 is used to convey the profile frame 1 to the positioning slide groove 41 , and the profile frame 1 slides along the positioning slide groove 41 when conveyed forward.

[0046] Specifically, the feeding positioning mechanism 3 of this embodiment includes a sliding trolley 31 and a clamping arm 32. The frame 2 is provided with a guide rail 21, and the sliding trolley 31 is provided with a servo motor (not shown in the figure) for driving it to slide on the guide rail 21 at a fixed length; the clamping arm 32 corresponds to the positioning slide groove 41 and is connected to the sliding trolley 31. The clamping arm 32 clamps the profile frame 1 so that the sliding trolley 31 can convey the profile frame 1 in a direction.

[0047] The first cutting mechanism includes a cutting saw blade 51 and a rotating transmission wheel group. The saw teeth of the cutting saw blade 51 are tilted downward. The cutting saw blade 51 is wound around the outer periphery of the rotating transmission wheel group. The cutting saw blade 51 is driven by the rotating transmission wheel group and always maintains a first inclination angle with the vertical direction to cut the rib plate 12.

[0048] The second cutting mechanism includes a second lifting drive mechanism 61, a movable mold 62 and a horizontal telescopic drive mechanism (not shown in the figure), the second lifting drive mechanism 61 is fixed to the frame 2, the driving end of the second lifting drive mechanism 61 is connected to the horizontal telescopic drive mechanism, the movable mold 62 and the horizontal telescopic drive mechanism are driven by the second lifting drive mechanism 61 to move closer to or away from the cutting positioning mechanism 4, the movable mold 62 is provided with a punching knife 621 adapted to the shearing groove 42, and the horizontal telescopic drive mechanism is used to drive the punching knife 621 to reciprocate along the shearing groove 42 and shear the profile body 11.

[0049] Combination Figure 6 and Figure 7 In this embodiment, the cutting trajectory of the cutting saw blade 51 intersects with the cutting trajectory of the punching knife 621.

[0050] This embodiment first saws the rib plate 12 and then shears the profile body 11, thereby avoiding the situation in which the rib plate 12 is warped and the profile body 11 is deformed due to direct stamping and shearing of the entire profile frame 1; at the same time, compared with directly sawing the entire profile frame 1, the sawing thickness is small, which reduces the difficulty of sawing; in addition, the combination of sawing and shearing, on the one hand, reduces the influence of sawing accuracy on splicing quality, the shearing surface forming angle of the profile body 11 is standard, the workpiece consistency is good, and the splicing quality is good; on the other hand, the shearing of the profile body 11 allows the profile frame 1 to be directly bent and spliced, reducing the amount of frame assembly angle code, which can help improve the efficiency of splicing and assembly; sawing uses a cutting saw blade 51 wrapped around the outer periphery of the rotating transmission wheel group, which can simultaneously form two cutting tracks to improve production efficiency.

[0051] Specifically, the rotary transmission wheel group of this embodiment includes a driven wheel 52 and a driving wheel 53 driven by a driving motor 54. The rotating shaft 541 of the driving motor 54 is connected to the driving wheel 53 through a key 542. The driven wheel 52 and the driving wheel 53 are arranged on both sides of the conveying track of the profile frame 1. The wheel surfaces of the driving wheel 53 and the driven wheel 52 are both round table surfaces that are wide at the top and narrow at the bottom, and the cutting saw blade is attached to the round table surface. At least one of the driving wheel 53 and the driven wheel 52 is provided with a spirally arranged limiting groove a on the wheel surface, and the spirally arranged limiting groove a is provided with a preset distance from the upper end surface and the lower end surface of the driving wheel 53 or the driven wheel 52. The cutting saw blade 51 is provided with a protrusion 511 adapted to the limiting groove a, and the rotary transmission wheel group drives the cutting saw blade 51 to transmit, and drives the cutting saw blade 51 to rise and fall along the wheel surface.

[0052] When the cutting saw blade 51 descends along the wheel surface of the driving wheel 53 or the driven wheel 52 during the transmission process, the rib plate 12 is cut from top to bottom, and the cutting direction remains unchanged, and the cutting is performed in the direction of the first inclination angle with the vertical direction; when the cutting reaches the position where the rib plate 12 is connected to the profile body 11, that is, the bottom of the assembly groove 14, the cutting saw blade 51 can be driven in reverse to reset along the cutting path by changing the rotation direction of the driving wheel 53.

[0053] The first cutting mechanism of this embodiment further includes a first lifting drive mechanism 56 , which is fixed to the frame 2 , and the rotary transmission wheel groups are all arranged on a lifting plate 57 , and the lifting plate 57 is driven to rise and fall by the first lifting drive mechanism 56 .

[0054] In order to keep the cutting saw blade 51 in a taut state and prevent the cutting saw blade 51 from loosening, the rotary wheel assembly of this embodiment also includes an adaptive tensioning wheel 55, and an elastic telescopic member 58 is provided on the lifting plate 57. The elastic telescopic member 58 presses the adaptive tensioning wheel 55 against the cutting saw blade 51.

[0055] When the cutting saw blade 51 descends along the wheel surface of the driving wheel 53 or the driven wheel 52 during the transmission process, due to the action of the elastic telescopic member 58, the adaptive tensioning wheel 55 is pressed against the cutting saw blade 51, so that the cutting saw blade 51 can still maintain a close fit with the driving wheel and the transmission wheel, and the cutting saw blade 51 remains in a tensioned state, ensuring that cutting is carried out continuously and stably.

[0056] In order to ensure that the profile frame 1 can be bent smoothly after being cut by the first cutting mechanism and the second cutting mechanism, so that the cut profile body 11 can be assembled, the first inclination angle is set to be greater than the second inclination angle in this embodiment to avoid interference of the rib plate 12 when the cut profile body 11 is assembled.

[0057] The precision requirement of the first inclination angle is not high, and it is only necessary to ensure that the first inclination angle is set to be greater than the second inclination angle, thereby reducing the cutting precision requirement of the cutting saw blade 51. At the same time, the cutting precision of the first cutting mechanism no longer affects the subsequent splicing effect of the profile frame 1.

[0058] Therefore, the final splicing effect of the profile frame 1 of this embodiment is determined by the second cutting mechanism. Since the second cutting mechanism of this embodiment uses the movable mold 62 to cooperate with the cutting positioning mechanism 4 to complete the angle punching, the punching knife 621 cooperates with the shearing groove 42 to cut, the forming angle is standard and the workpiece consistency is good, so that the bending of the profile frame 1 can obtain a good splicing effect.

[0059] When the second cutting mechanism is working, the positioning slot 41 limits the profile frame 1, and the second lifting drive mechanism 61 drives the movable mold 62 to approach the cutting positioning mechanism 4. When the punching knife 621 extends into the shearing slot 42, the punching knife 621 breaks through the top surface of the profile frame 1 and is tangent to the shearing slot 42. Further, the horizontal telescopic drive mechanism drives the punching knife 621 to reciprocate in the shearing slot 42, and the two side walls of the profile frame 1 located in the shearing slot 42 are sheared off by the punching knife 621.

[0060] By further bending the profile frame 1, the shear edges on both sides of the profile body 11 are folded and fitted together, which is convenient for the next welding process and can reduce the welding workload.

[0061] In order to enable the profile frame 1 to be folded and fitted together after the angle punching and bending to facilitate subsequent welding, a second preset distance is provided between the shear groove 42 and the bottom of the positioning slide groove 41 .

[0062] In this embodiment, the shear groove 42 is symmetrically provided with second inclined surfaces 422 on both sides of the notch, and the angle between the second inclined surfaces 422 is smaller than the angle between the first inclined surfaces 421. Since the cross section of the punch 621 is adapted to the shear groove 42, when the punch 621 breaks through the top surface of the profile frame 1, the surface of the punch 621 corresponding to the second inclined surface 422 can press the two broken parts downward to avoid the two parts broken by the punch 621 from contacting and generating a reverse force when folded, thereby affecting the folding, fitting and welding of the shear edge.

[0063] In addition, the present invention also provides a method for forming a support frame for doors and windows based on the cutting device of the profile frame, which comprises the following steps:

[0064] (1) The feeding mechanism conveys the profile frame 1 in a directional manner according to a predetermined size, and the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade 51 to transmit and descend, so that the cutting saw blade 51 tilts and cuts the rib plate 12;

[0065] (2) The rotary transmission wheel group drives the cutting saw blade 51 to rise and reset;

[0066] (3) The feeding mechanism continues to convey the profile frame 1 in a directional manner according to the predetermined size, and the second lifting drive mechanism 61 of the second cutting mechanism drives the horizontal telescopic drive mechanism and the movable mold 62 to descend. When the movable mold 62 descends until the punching knife 621 breaks through the top surface of the profile body 11 and the punching knife 621 is tangent to the shearing groove 42, the horizontal telescopic drive mechanism drives the punching knife 621 to reciprocate in the shearing groove 42 to shear the two side walls of the profile body 11; at the same time, the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade 51 to drive and descend, so that the cutting saw blade 51 tilts to cut the rib plate 12 at the next cutting position of the profile frame 1;

[0067] (4) The feeding mechanism continues to convey the profile frame 1 in a directional manner according to the predetermined size, and the second lifting drive mechanism 61 drives the horizontal telescopic drive mechanism and the movable mold 62 to reset; at the same time, the rotary transmission wheel group drives the cutting saw blade 51 to rise and reset;

[0068] (5) Repeat steps (3) and (4) several times;

[0069] (6) Cut the profile frame, bend and splice the cut profile frame at the positions cut by the first cutting mechanism and the second cutting mechanism, and finally connect the two ends of the cut with a frame assembly angle code to form a complete support frame for doors and windows.

[0070] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cutting device for a profile frame, characterized in that: The profile frame includes a profile body and a rib plate, wherein the profile body is provided with a circumferentially enclosed assembly cavity, the rib plates are arranged in pairs on one side of the profile body, and an assembly groove is formed between the profile body and the rib plates; the cutting device includes a frame, and a feeding positioning mechanism, a cutting positioning mechanism, a first cutting mechanism, and a second cutting mechanism arranged on the frame, wherein the first cutting mechanism and the second cutting mechanism are arranged in sequence along the feeding direction of the profile frame, and the cutting positioning mechanism is arranged opposite to the second cutting mechanism; A positioning slot and a shearing slot are provided on the top of the cutting positioning mechanism. The shearing slot and the positioning slot are intersected and communicated. The positioning slot is adapted to the width of the profile body. The shearing slot includes a first inclined surface that is arranged in a mirror-symmetrical manner. The first inclined surface has a second inclination angle with the vertical direction. The feeding and positioning mechanism is used to convey the profile frame to the positioning chute; The first cutting mechanism comprises a cutting saw blade and a rotary transmission wheel set, wherein the saw teeth of the cutting saw blade are arranged obliquely downward, the cutting saw blade is wound around the outer periphery of the rotary transmission wheel set, the cutting saw blade is driven by the rotary transmission wheel set and always maintains a first inclination angle with the vertical direction to cut the rib plate; The second cutting mechanism comprises a second lifting drive mechanism, a movable mold and a horizontal telescopic drive mechanism, wherein the movable mold and the horizontal telescopic drive mechanism are driven by the second lifting drive mechanism to move closer to or away from the cutting positioning mechanism, the movable mold is provided with a punching knife adapted to the shearing groove, and the horizontal telescopic drive mechanism is used to drive the punching knife to reciprocate along the shearing groove and shear the profile body; The cutting track of the cutting saw blade intersects with the cutting track of the punching knife.

2. The cutting device for the profile frame according to claim 1, characterized in that: The rotary transmission wheel group includes a driven wheel and a driving wheel driven by a driving motor. The driven wheel and the driving wheel are arranged on both sides of the conveying track of the profile frame. The wheel surfaces of the driving wheel and the driven wheel are both round table surfaces that are wide at the top and narrow at the bottom. The cutting saw blade is attached to the round table surface.

3. The cutting device for the profile frame according to claim 2, characterized in that: At least one of the driving wheel and the driven wheel is provided with a spirally arranged limiting groove on the wheel surface, and the cutting saw blade is provided with a protrusion adapted to the limiting groove. The rotary transmission wheel group drives the cutting saw blade to transmit and drives the cutting saw blade to rise and fall along the wheel surface.

4. The cutting device for the profile frame according to claim 1, characterized in that: The first cutting mechanism also includes a first lifting drive mechanism, and the rotary transmission wheel groups are all arranged on a lifting plate, and the lifting plate is driven to rise and fall by the first lifting drive mechanism.

5. The cutting device for the profile frame according to claim 4, characterized in that: The rotary wheel group also includes an adaptive tensioning wheel. An elastic telescopic member is provided on the lifting plate. The elastic telescopic member presses the adaptive tensioning wheel against the cutting saw blade to keep the cutting saw blade in a tensioned state.

6. The cutting device for the profile frame according to claim 1, characterized in that: The first inclination angle is greater than the second inclination angle.

7. The cutting device for the profile frame according to claim 1, characterized in that: A second preset distance is set between the shearing groove and the groove bottom of the positioning sliding groove.

8. The cutting device for the profile frame according to claim 1, characterized in that: Second inclined surfaces are symmetrically arranged on both sides of the notch of the shear groove, and the included angle between the second inclined surfaces is smaller than the included angle between the first inclined surfaces.

9. The cutting device for the profile frame according to claim 1, characterized in that: The feeding positioning mechanism includes a sliding trolley and a clamping arm. The frame is provided with a guide rail, and the sliding trolley is provided with a servo motor for driving it to slide on the guide rail to a fixed length; the clamping arm corresponds to the positioning slide groove and is connected to the sliding trolley. The clamping arm clamps the profile frame so that the sliding trolley can convey the profile frame in a direction.

10. A method for forming a support frame for doors and windows based on the cutting device for the profile frame according to any one of claims 1 to 9, characterized in that: The steps include: (1) The feeding mechanism conveys the profile frame in a directional manner according to a predetermined size, and the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade to transmit and descend, so that the cutting saw blade tilts to cut the rib plate; (2) The rotary transmission wheel group drives the cutting saw blade to rise and reset; (3) The feeding mechanism continues to convey the profile frame in a directional manner according to the predetermined size, and the second lifting drive mechanism of the second cutting mechanism drives the horizontal telescopic drive mechanism and the movable mold to descend. When the movable mold descends to the point where the punch cuts through the top surface of the profile body and the punch cuts tangent to the shearing groove, the horizontal telescopic drive mechanism drives the punch cutter to reciprocate in the shearing groove to shear the two side walls of the profile body; at the same time, the rotary transmission wheel group of the first cutting mechanism drives the cutting saw blade to drive and descend, so that the cutting saw blade tilts to cut the rib plate at the next cutting position of the profile frame; (4) The feeding mechanism continues to directional-feed the profile frame according to the predetermined size, and the second lifting drive mechanism drives the horizontal telescopic drive mechanism and the movable mold to reset; at the same time, the rotary transmission wheel group drives the cutting saw blade to rise and reset; (5) Repeat steps (3) and (4) several times.

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