Height-adjustable mask machine tool bit

Abstract

The utility model provides a height-adjustable mask machine tool bit, which relates to the technical field of mask machines and comprises a longitudinal multi-fixed-position mounting back plate, an electric lifting mechanism, a longitudinal multi-fixed-position mounting block, a sliding mounting plate, an elastic clamping limiting structure and a mounting frame with a tool bit convenient to replace. According to the device, an electric lifting mechanism is adopted to drive a mounting frame with a tool bit convenient to replace to ascend and descend; the fixing height of the electric lifting mechanism on the longitudinal multi-fixing-position installation back plate can be adjusted, and then the height of the tool bit is adjusted. The clamping position of the sliding mounting plate on the longitudinal multi-fixed-position mounting block can be adjusted, so that the height of the tool bit is adjusted; according to the two modes, the height of the tool bit can be adjusted, and the two modes can be used in an overlapped mode, so that the height of the tool bit can be adjusted to be higher, the tool bit is matched with the electric lifting mechanism with the redundant stroke to conduct tool bit lifting cutting with the larger stroke, and the tool bit lifting cutting device can be suitable for different stacked mask cloth with different thicknesses in different production batches.

Description

Technical Field

[0001] The utility model relates to the technical field of mask machines, in particular to a height-adjustable mask machine cutter head. Background Art

[0002] When the mask production line is processing, the mask trimming device cuts off the excess fabric of the mask. This cutting process is achieved by raising and lowering the knife head.

[0003] In the prior art, the lifting stroke of the cutter head of the mask machine is fixed, and the position of the platform for placing the stacked mask fabrics is fixed, so that the height adjustment range of the cutter head is fixed, and it cannot be adjusted according to the different thicknesses of the stacked mask fabrics in different production batches, and the practicality is insufficient. Utility Model Content

[0004] The purpose of the utility model is to provide a height-adjustable cutter head for a mask machine. The device adopts an electric lifting mechanism to drive a mounting frame with a conveniently replaceable cutter head to rise and fall, and the electric lifting mechanism has a relatively large spare stroke; the fixed height of the electric lifting mechanism on the longitudinal multi-fixed position mounting back plate is adjustable, thereby adjusting the height of the cutter head; the clamping position of the sliding mounting plate on the longitudinal multi-fixed position mounting block is adjustable, thereby adjusting the height of the cutter head; the above two methods can both adjust the height of the cutter head, and the two methods can be used in combination, so that the height of the cutter head can be adjusted higher, and the electric lifting mechanism with a spare stroke can be used to perform cutter head lifting and cutting with a larger stroke, which can be suitable for different thicknesses of stacked mask fabrics in different production batches.

[0005] The utility model provides a height-adjustable mask machine cutter head, comprising:

[0006] The back plate is installed with multiple fixing positions in the longitudinal direction, and multiple fixing positions are arranged in the longitudinal direction;

[0007] An electric lifting mechanism, which is longitudinally detachable and assembled on a fixed position of a longitudinal multi-fixed position mounting back plate;

[0008] A longitudinal multi-fixed position mounting block, which is provided with a plurality of fixed positions in the longitudinal direction, wherein the upper end of the longitudinal multi-fixed position mounting block can be detachably fixedly assembled on the telescopic lower end of the electric lifting mechanism;

[0009] A sliding mounting plate, one end of which is longitudinally slidably assembled in a longitudinal multi-fixed position mounting block, and the other end of the sliding mounting plate extends out of the longitudinal multi-fixed position mounting block;

[0010] An elastic clamping limiting structure is fixedly assembled on the end of the longitudinal multi-fixed position mounting block extending from the sliding mounting plate;

[0011] The elastic clamping limiting structure is clamped on a fixed position of the longitudinal multi-fixed position mounting block at one end close to the longitudinal multi-fixed position mounting block;

[0012] The mounting frame with a conveniently replaceable cutter head is laterally fixedly mounted on a sliding mounting plate.

[0013] As a further optimization scheme, in order to fix the electric lifting mechanism at different fixed positions of the longitudinal back plate body, adjust the installation height of the electric lifting mechanism, and then adjust the height of the cutter head, the longitudinal multi-fixed position installation back plate includes:

[0014] A longitudinal back panel body;

[0015] The left and right side walls of the longitudinal back plate body are evenly and longitudinally provided with mounting through holes;

[0016] Two of the mounting through holes form a group, and a group of the mounting through holes forms a fixing position.

[0017] As a further optimization solution, in order to adjust the height of the cutter head by lifting and lowering the electric push rod, the electric lifting mechanism includes:

[0018] The electric push rod has connecting ear plates integrally formed on both sides of the rear edge of the outer wall;

[0019] The connecting ear plates on both sides are fixedly connected to a fixing position at the front end of the longitudinal multi-fixing position mounting back plate by bolts and nuts;

[0020] The telescopic lower end of the electric push rod is fixedly equipped with a connecting flange, and the upper end of the longitudinal multi-fixed position mounting block is fixedly connected to the connecting flange through bolts.

[0021] As a further optimization scheme, in order to clamp the sliding mounting plate to a fixed position on the outer wall of the longitudinal rectangular block through the elastic clamping limiting structure, and to be able to move the sliding mounting plate to clamp it to other fixed positions on the outer wall of the longitudinal rectangular block after releasing the clamping, so as to adjust the height of the cutter head, the longitudinal multi-fixed position mounting block includes:

[0022] A longitudinal rectangular block, the front wall of which is provided with a rectangular groove in the longitudinal direction;

[0023] A strip-shaped wedge-shaped slide groove is longitudinally opened on the left side of the inner wall of the rectangular groove;

[0024] One end of the sliding mounting plate is slidably engaged in the strip-shaped wedge-shaped sliding groove;

[0025] A strip-shaped through hole is longitudinally opened on the right side of the inner wall of the rectangular groove, and the other end of the sliding mounting plate passes through the strip-shaped through hole;

[0026] The right side surface of the longitudinal rectangular block is evenly and longitudinally provided with snap-in holes, and the snap-in holes are longitudinally distributed in two rows, and the two rows of snap-in holes are respectively located at the front and rear sides of the strip-shaped through hole;

[0027] The front and rear corresponding clamping holes in the two columns of clamping holes form a group, and a group of clamping holes forms a fixed position;

[0028] The elastic clamping limiting structure is clamped in a group of the clamping holes at an end portion close to one side of the longitudinal rectangular block.

[0029] As a further optimization solution, in order to facilitate longitudinal sliding when changing the clamping position of the sliding mounting plate, the sliding mounting plate includes:

[0030] A strip plate, which passes through the snap-in hole transversely;

[0031] A wedge-shaped slider is fixedly mounted on one end of the strip plate close to the strip-shaped wedge-shaped slide groove, and the wedge-shaped slider is slidably engaged in the strip-shaped wedge-shaped slide groove;

[0032] The elastic clamping limiting structure is fixedly assembled on one end of the strip plate extending out of the longitudinal rectangular block.

[0033] As a further optimization scheme, in order to realize the clamping and limiting of the strip plate in a clamping hole on the outer wall of the longitudinal rectangular block and to facilitate the release of this limit, the elastic clamping and limiting structure includes:

[0034] The front and rear side walls of the strip plate away from one end of the longitudinal rectangular block are both vertically fixed with a fixing plate;

[0035] One end of the spring is fixedly connected to one side of the fixed plate close to the longitudinal rectangular block, and the other end of the spring is fixedly connected to the movable plate;

[0036] A clamping block is integrally formed on one side of the movable plate close to the longitudinal rectangular block, and the clamping block is clamped in the corresponding clamping hole;

[0037] One end of a round rod is vertically fixedly connected to one side of the movable plate away from the longitudinal rectangular block, and the other end of the round rod passes through the fixed plate on the same side.

[0038] As a further optimization solution, in order to facilitate grasping and pulling the round rod, a grasping round cap is fixedly mounted on one end of the outer wall of the round rod away from the movable plate, and the outer wall of the grasping round cap is provided with anti-slip grooves.

[0039] As a further optimization solution, in order to extend the cutter head to a certain length, the stacked masks can be used without cutting, and the cutter head can be easily replaced, the mounting frame with a convenient replacement cutter head includes:

[0040] A crossbeam, the rear end of which is welded to the sliding mounting plate;

[0041] A screw is screwed to the front side of the upper surface of the cross beam;

[0042] The lower end of the screw rod is fixedly equipped with a cutter head, and the upper end of the outer wall of the screw rod is threadedly connected with a fixing nut.

[0043] As a further optimization solution, in order to enhance the connection strength between the cross beam and the sliding mounting plate, a reinforcing rib is fixedly mounted at the connection between the cross beam and the sliding mounting plate.

[0044] As a further optimization solution, in order to limit the fixed position of the cutter head and prevent the cutter head from rotating after being fixed, a limiting block is integrally formed on the top surface of the cutter head, and the limiting block is in contact with the side wall of the beam.

[0045] The utility model provides a height-adjustable mask machine cutter head through improvement, which has the following improvements and advantages compared with the prior art:

[0046] The device adopts an electric lifting mechanism to drive the mounting frame with a conveniently replaceable cutter head to rise and fall, and the electric lifting mechanism has a large spare stroke; the fixed height of the electric lifting mechanism on the longitudinal multi-fixed position mounting back plate is adjustable, thereby adjusting the height of the cutter head; the clamping position of the sliding mounting plate on the longitudinal multi-fixed position mounting block is adjustable, thereby adjusting the height of the cutter head; the above two methods can both adjust the height of the cutter head, and the two methods can be used in combination, so that the height of the cutter head can be adjusted higher, and the electric lifting mechanism with spare stroke can be used to perform cutter head lifting and cutting with a larger stroke, which can be suitable for different thicknesses of stacked mask fabrics in different production batches. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 It is a schematic diagram of the structure of the utility model;

[0049] Figure 2 This is a schematic diagram of the assembly structure of the longitudinal multi-fixed position mounting back plate and the electric lifting mechanism of the utility model;

[0050] Figure 3 This is a schematic diagram of the longitudinal multi-fixed position installation block structure of the utility model;

[0051] Figure 4 It is a schematic diagram of the elastic clamping limit structure and the sliding mounting plate structure of the utility model;

[0052] Figure 5 The utility model is a schematic diagram of the structure of the mounting frame with a convenient replacement cutter head.

[0053] Description of reference numerals:

[0054] 1-longitudinal multi-fixed position mounting back plate, 11-longitudinal back plate body, 12-mounting through hole, 2-electric lifting mechanism, 21-electric push rod, 22-connecting flange, 23-connecting ear plate, 24-bolt, nut, 3-longitudinal multi-fixed position mounting block, 31-longitudinal rectangular block, 32-rectangular groove, 33-strip wedge-shaped slide groove, 34-strip through hole, 35-clamping hole, 4-elastic clamping limiting structure, 41-fixed plate, 42-spring, 43-movable plate, 44-clamping block, 45-round rod, 5-mounting frame with convenient replacement of cutter head, 51-crossbeam, 52-fixing nut, 53-cutting head, 54-fixing nut, 6-reinforcement rib, 7-limiting block, 8-grasping round cap, 9-sliding mounting plate, 91-strip plate, 92-wedge-shaped slider. DETAILED DESCRIPTION

[0055] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0057] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] See also Figure 1-5 The utility model provides a technical solution: a height-adjustable mask machine cutter head, comprising:

[0059] The back plate 1 is installed at multiple longitudinal fixing positions, and multiple fixing positions are arranged in the longitudinal direction;

[0060] The electric lifting mechanism 2 is longitudinally detachably mounted on a fixed position of the longitudinal multi-fixed position mounting back plate 1; the electric lifting mechanism 2 can be removed from the fixed position and fixed on other fixed positions on the longitudinal multi-fixed position mounting back plate 1, so as to change the height of the electric lifting mechanism 2, and further change the height of the cutter head 53;

[0061] A longitudinal multi-fixed position mounting block 3 is provided with multiple fixed positions in the longitudinal direction, and the upper end of the longitudinal multi-fixed position mounting block 3 is detachably fixedly assembled on the telescopic lower end of the electric lifting mechanism 2;

[0062] A sliding mounting plate 9, one end of which is longitudinally slidably assembled in the longitudinal multi-fixed position mounting block 3, and the other end of the sliding mounting plate 9 extends out of the longitudinal multi-fixed position mounting block 3;

[0063] An elastic clamping limiting structure 4 is fixedly mounted on the end of the sliding mounting plate 9 extending out of the longitudinal multi-fixed position mounting block 3;

[0064] The elastic clamping limiting structure 4 is clamped at one end close to the longitudinal multi-fixed position mounting block 3 to a fixed position of the longitudinal multi-fixed position mounting block 3;

[0065] The elastic clamping limiting structure 4 clamps the sliding mounting plate 9 to one of the fixed positions of the longitudinal multi-fixed position mounting block 3. After the elastic clamping limiting structure 4 is released from clamping, the sliding mounting plate 9 is moved and clamped to the other fixed positions of the longitudinal multi-fixed position mounting block 3 by the elastic clamping limiting structure 4, thereby changing the height of the cutter head 53.

[0066] The mounting frame 5 with a replaceable cutter head is laterally fixedly assembled on the sliding mounting plate 9. The cutter head 53 fixed on the mounting frame 5 for replacing the cutter head is easy to replace, and the cutter head 53 extends a certain distance to meet the cutting requirements of the excess fabric of the stacked mask cloth.

[0067] In some embodiments, in order to fix the electric lifting mechanism 2 at different fixed positions of the longitudinal back plate body 11, adjust the installation height of the electric lifting mechanism 2, and then adjust the height of the cutter head 53, the longitudinal multi-fixed position installation back plate 1 includes:

[0068] A longitudinal back plate body 11;

[0069] The left and right side walls of the longitudinal back plate body 11 are uniformly provided with mounting through holes 12 in the longitudinal direction;

[0070] Two mounting through holes 12 form a group, and a group of mounting through holes 12 forms a fixing position.

[0071] In some embodiments, in order to adjust the height of the cutter head 53 by lifting and lowering the electric push rod 21, the electric lifting mechanism 2 includes:

[0072] The electric push rod 21 has connecting ear plates 23 integrally formed on both left and right sides of the rear edge of the outer wall;

[0073] The connecting ear plates 23 on both sides are fixedly connected to a fixing position at the front end of the longitudinal multi-fixing position mounting back plate 1 by bolts and nuts 24, and the bolts and nuts 24 are detachable;

[0074] The telescopic lower end of the electric push rod 21 is fixedly equipped with a connecting flange 22, and the upper end of the longitudinal multi-fixed position mounting block 3 is fixedly connected to the connecting flange 22 by bolts. The connecting flange 22 is detachable, which is convenient for disassembling the electric lifting mechanism 2 and the longitudinal multi-fixed position mounting block 3 for separate inspection and maintenance.

[0075] In some embodiments, in order to clamp the sliding mounting plate 9 at a fixed position on the outer wall of the longitudinal rectangular block 31 through the elastic clamping limiting structure 4, and to be able to move the sliding mounting plate 9 to clamp it at other fixed positions on the outer wall of the longitudinal rectangular block 31 after releasing the clamping, so as to adjust the height of the cutter head 53, the longitudinal multi-fixed position mounting block 3 includes:

[0076] A longitudinal rectangular block 31, a front wall of which is longitudinally provided with a rectangular groove 32;

[0077] A strip-shaped wedge-shaped slide groove 33 is longitudinally opened on the left side of the inner wall of the rectangular groove 32;

[0078] One end of the sliding mounting plate 9 is slidably engaged in the strip-shaped wedge-shaped slide groove 33;

[0079] A strip-shaped through hole 34 is longitudinally opened on the right side of the inner wall of the rectangular groove 32, and the other end of the sliding mounting plate 9 passes through the strip-shaped through hole 34. When the sliding mounting plate 9 is not clamped, it can slide along the strip-shaped wedge-shaped slide groove 33;

[0080] The right side of the longitudinal rectangular block 31 is evenly provided with snap-in holes 35, and the snap-in holes 35 are longitudinally distributed in two rows, and the two rows of snap-in holes 35 are respectively located at the front and rear sides of the strip-shaped through hole 34;

[0081] The front and rear corresponding snap-in holes 35 in the two rows of snap-in holes 35 form a group, and a group of snap-in holes 35 forms a fixed position;

[0082] The end of the elastic clamping limiting structure 4 close to one side of the longitudinal rectangular block 31 is clamped in a group of clamping holes 35 .

[0083] In some embodiments, in order to facilitate longitudinal sliding when changing the clamping position of the sliding mounting plate 9, the sliding mounting plate 9 includes:

[0084] A strip plate 91, which passes through the snap-in hole 35 transversely;

[0085] The wedge-shaped slider 92 is fixedly mounted on one end of the strip plate 91 close to the strip-shaped wedge-shaped slide groove 33, and the wedge-shaped slider 92 is slidably engaged in the strip-shaped wedge-shaped slide groove 33;

[0086] The elastic clamping limiting structure 4 is fixedly assembled on one end of the strip plate 91 extending out of the longitudinal rectangular block 31 .

[0087] In some embodiments, in order to realize the clamping and limiting of the strip plate 91 in a clamping hole 35 on the outer wall of the longitudinal rectangular block 31 and to facilitate the release of this limit, the elastic clamping and limiting structure 4 includes:

[0088] The front and rear side walls of the strip plate 91 away from the longitudinal rectangular block 31 are both vertically fixed with a fixing plate 41;

[0089] One end of a spring 42 is fixedly connected to one side of the fixed plate 41 close to the longitudinal rectangular block 31, and the other end of the spring 42 is fixedly connected to a movable plate 43;

[0090] A clamping block 44 is integrally formed on one side of the movable plate 43 close to the longitudinal rectangular block 31, and the clamping block 44 is clamped in the corresponding clamping hole 35;

[0091] One end of a round rod 45 is vertically fixedly connected to a side of the movable plate 43 away from the longitudinal rectangular block 31 , and the other end of the round rod 45 passes through the fixed plate 41 on the same side.

[0092] When subjected to external forces in the up and down directions, the provision of the round rod 45 enhances the strength of the clamping block 44 in the clamping hole 35. By pulling out the round rod 45, the movable plate 43 can be driven to compress the spring 42, so that the clamping block 44 is separated from the clamping hole 35 to release the clamping effect.

[0093] In some embodiments, in order to facilitate grasping and pulling the round rod 45, a grasping round cap 8 is fixedly mounted on the outer wall of the round rod 45 away from the movable plate 43, and the outer wall of the grasping round cap 8 is provided with anti-slip grooves to prevent slipping.

[0094] In some embodiments, in order to extend the cutter head 53 to a certain length, the masks that can be stacked can be used without cutting, and the cutter head 53 can be easily replaced, the mounting frame 5 with a convenient replacement cutter head includes:

[0095] The crossbeam 51, the rear end of which is welded to the sliding mounting plate 9;

[0096] A screw rod 52 is screwed to the front side of the upper surface of the cross beam 51;

[0097] The lower end of the screw rod 52 is fixedly equipped with a cutter head 53, and the upper end of the outer wall of the screw rod 52 is screwed with a fixing nut 54. After the fixing nut 54 is screwed off, the cutter head 53 and the screw rod 52 can be removed from the cross beam 51 together. After replacing the new cutter head 53 and screw rod 52, the installation is completed by reverse operation.

[0098] In some embodiments, in order to enhance the connection strength between the cross beam 51 and the sliding mounting plate 9 , a reinforcing rib 6 is fixedly mounted at the connection between the cross beam 51 and the sliding mounting plate 9 .

[0099] In some embodiments, in order to limit the fixed position of the cutter head 53 and prevent the cutter head 53 from rotating after being fixed, a limit block 7 is integrally formed on the top surface of the cutter head 53 , and the limit block 7 is in contact with the side wall of the beam 51 .

[0100] Working principle:

[0101] The electric lifting mechanism 2 drives the mounting frame 5 with the convenient replacement of the cutter head to be lifted and lowered, and the electric lifting mechanism 2 has a relatively large travel margin; the electric lifting mechanism 2 can be removed from the fixed position and fixed to other fixed positions on the longitudinal multi-fixed position mounting back plate 1, so as to change the height of the electric lifting mechanism 2, and then change the height of the cutter head 53;

[0102] The elastic clamping limiting structure 4 clamps the sliding mounting plate 9 to one of the fixed positions of the longitudinal multi-fixed position mounting block 3. After the elastic clamping limiting structure 4 is released from clamping, the sliding mounting plate 9 is moved and clamped to the other fixed positions of the longitudinal multi-fixed position mounting block 3 by the elastic clamping limiting structure 4, thereby changing the height of the cutter head 53.

[0103] Both of the above methods can adjust the height of the cutter head 53, and the two methods can be used in combination, so that the height of the cutter head 53 can be adjusted higher. In combination with the electric lifting mechanism 2 with sufficient stroke, the cutter head 53 can be lifted and cut with a larger stroke, which can be suitable for different thicknesses of stacked mask fabrics in different production batches.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A height-adjustable mask machine cutter head, characterized in that: include: A longitudinally multi-fixing position mounting back plate (1) is provided with a plurality of fixing positions in the longitudinal direction; An electric lifting mechanism (2) is longitudinally detachably mounted on a fixed position of the longitudinal multi-fixed position mounting back plate (1); A longitudinal multi-fixed position mounting block (3) having a plurality of fixed positions in the longitudinal direction, wherein the upper end of the longitudinal multi-fixed position mounting block (3) is detachably fixedly mounted on the telescopic lower end of the electric lifting mechanism (2); A sliding mounting plate (9), one end of which is longitudinally slidably assembled in the longitudinal multi-fixed position mounting block (3), and the other end of the sliding mounting plate (9) extends out of the longitudinal multi-fixed position mounting block (3); An elastic clamping limiting structure (4) is fixedly mounted on the end of the sliding mounting plate (9) extending out of the longitudinal multi-fixed position mounting block (3); The elastic clamping limiting structure (4) is clamped on a fixed position of the longitudinal multi-fixed position installation block (3) at one end thereof close to the longitudinal multi-fixed position installation block (3); A mounting frame (5) for replacing a cutter head is provided, which is laterally fixedly mounted on a sliding mounting plate (9).

2. A height-adjustable mask machine cutter head according to claim 1, characterized in that: The longitudinal multi-fixing position mounting back plate (1) comprises: A longitudinal back plate body (11); The left and right side walls of the longitudinal back plate body (11) are uniformly and longitudinally provided with mounting through holes (12); Two of the mounting through holes (12) form a group, and a group of the mounting through holes (12) forms a fixed position.

3. A height-adjustable mask machine cutter head according to claim 1, characterized in that: The electric lifting mechanism (2) comprises: The electric push rod (21) has connecting ear plates (23) integrally formed on both left and right sides of the rear edge of the outer wall; The connecting ear plates (23) on both sides are fixedly connected to a fixing position at the front end of the longitudinal multi-fixing position mounting back plate (1) by bolts and nuts (24); The telescopic lower end of the electric push rod (21) is fixedly equipped with a connecting flange (22), and the upper end of the longitudinal multi-fixed position mounting block (3) is fixedly connected to the connecting flange (22) by bolts.

4. A height-adjustable mask machine cutter head according to claim 1, characterized in that: The longitudinal multi-fixed position mounting block (3) comprises: A longitudinal rectangular block (31) having a front wall longitudinally provided with a rectangular groove (32); A strip-shaped wedge-shaped slide groove (33) is longitudinally opened on the left side of the inner wall of the rectangular groove (32); One end portion of the sliding mounting plate (9) is slidably engaged in the strip-shaped wedge-shaped sliding groove (33); A strip-shaped through hole (34) is longitudinally opened on the right side of the inner wall of the rectangular groove (32), and the other end of the sliding mounting plate (9) passes through the strip-shaped through hole (34); The right side surface of the longitudinal rectangular block (31) is uniformly provided with snap-in holes (35) in the longitudinal direction, and the snap-in holes (35) are longitudinally distributed in two rows, and the two rows of snap-in holes (35) are respectively located at the front and rear sides of the strip-shaped through hole (34); The front and rear corresponding clamping holes (35) in the two rows of clamping holes (35) form a group, and a group of clamping holes (35) forms a fixed position; The elastic clamping limiting structure (4) is clamped in a group of clamping holes (35) at an end portion close to one side of the longitudinal rectangular block (31).

5. A height-adjustable mask machine cutter head according to claim 4, characterized in that: The sliding mounting plate (9) comprises: A strip plate (91) which passes through the engaging hole (35) transversely; A wedge-shaped slider (92) is fixedly mounted on one end of the strip plate (91) close to the strip-shaped wedge-shaped slide groove (33), and the wedge-shaped slider (92) is slidably engaged in the strip-shaped wedge-shaped slide groove (33); The elastic clamping limiting structure (4) is fixedly mounted on one end of the strip plate (91) extending out of the longitudinal rectangular block (31).

6. A height-adjustable mask machine cutter head according to claim 5, characterized in that: The elastic clamping limiting structure (4) comprises: The front and rear side walls of the strip plate (91) away from one end of the longitudinal rectangular block (31) are both vertically fixed with a fixing plate (41); One end of a spring (42) is fixedly connected to one side of the fixed plate (41) close to the longitudinal rectangular block (31), and the other end of the spring (42) is fixedly connected to a movable plate (43); A clamping block (44) is integrally formed on one side of the movable plate (43) close to the longitudinal rectangular block (31), and the clamping block (44) is clamped in the corresponding clamping hole (35); One end of a round rod (45) is vertically fixedly connected to one side of the movable plate (43) away from the longitudinal rectangular block (31), and the other end of the round rod (45) passes through the fixed plate (41) on the same side.

7. A height-adjustable mask machine cutter head according to claim 6, characterized in that: A gripping round cap (8) is fixedly mounted on one end of the outer wall of the round rod (45) away from the movable plate (43), and the outer wall of the gripping round cap (8) is provided with anti-slip grooves.

8. A height-adjustable mask machine cutter head according to claim 1, characterized in that: The mounting frame (5) with a conveniently replaceable cutter head comprises: A crossbeam (51), the rear end of which is welded to the sliding mounting plate (9); A screw rod (52) is screwed to the front side of the upper surface of the cross beam (51); A cutter head (53) is fixedly mounted on the lower end of the screw rod (52), and a fixing nut (54) is threadedly connected to the upper end of the outer wall of the screw rod (52).

9. A height-adjustable mask machine cutter head according to claim 8, characterized in that: A reinforcing rib (6) is fixedly mounted at the connection between the crossbeam (51) and the sliding mounting plate (9).

10. A height-adjustable mask machine cutter head according to claim 8, characterized in that: A limiting block (7) is integrally formed on the top surface of the cutter head (53), and the limiting block (7) is in contact with the side wall of the crossbeam (51).

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