CN213804281U

CN213804281U - Automatic continuous sewing device of artificial eye machine

Info

Publication number: CN213804281U
Application number: CN202022571964.5U
Authority: CN
Inventors: 陈燚恒; 张江; 林兵; 冯远达; 冯银友; 许有福
Original assignee: Wenzhou Gutai Machinery Technology Co ltd
Current assignee: Wenzhou Xingutai Machinery Technology Co.,Ltd.
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-07-27
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses an automatic continuous sewing device of artificial eye machine. The technical key points are as follows: be equipped with cloth removal mobile device on the operation panel, cloth moving mechanism includes cloth rotary mechanism, cloth reciprocating mechanism and cloth fixture, cloth rotary mechanism includes the revolving stage, the rotating electrical machines drive the revolving stage is rotatory, cloth reciprocating mechanism is including the bracing piece, reciprocating rod and reciprocating motor, the bracing piece is fixed to be set up on the revolving stage, reciprocating rod slides and connects on the bracing piece, reciprocating motor fixes on the bracing piece, be used for driving reciprocating rod and remove, cloth fixture sets up on reciprocating rod, cloth fixture is including the lower plate, punch holder and die clamping cylinder, die clamping cylinder is connected with the punch holder, whether control punch holder presss from both sides tightly with the lower plate, the utility model discloses small, stability is high, it is various to sew up the orbit, machining efficiency is high.

Description

Automatic continuous sewing device of artificial eye machine

Technical Field

The utility model relates to a sewing machine equipment field, more specifically the utility model relates to an automatic even seam device of artificial eye machine that says so.

Background

The utility model with the publication number of CN207193531U discloses an automatic conveying device for an artificial eye machine. The utility model discloses a through the motion of the arm lock of straight reciprocating mechanism drive behind the arm lock centre gripping cuff cloth, realize continuous pay-off.

However, the utility model has the following problems: the swing mechanism is too long, so that the whole mechanism is large in size and not easy to place and carry, the existing automatic continuous sewing device of the small-sized artificial eye machine can only sew simple tracks, the function is single, when the artificial eye machine with the single function needs to sew inclined artificial eyes, the initial position of the clamping mechanism needs to be adjusted, the initial position and the direction of cloth are changed, and workers have habituation in long-term processing, so that the processing efficiency is low after the shape of the artificial eyes is changed every time.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an automatic linking device of eye prosthesis machine small, stability is high, the orbit of sewing up is various, machining efficiency is high.

In order to achieve the above purpose, the utility model provides a following technical scheme: an automatic linking device of a false eye machine comprises an equipment body and an operating platform arranged on the equipment body, wherein the equipment body is provided with a sewing device, the sewing device comprises a presser foot device, a sewing needle, a sewing arm and a driving component for driving the sewing needle to move, the sewing needle and the presser foot device are arranged on the sewing arm, the operating platform is provided with a cloth moving device, the sewing arm wraps the cloth moving device, the cloth moving device comprises a cloth rotating mechanism, a cloth reciprocating mechanism and a cloth clamping mechanism, the cloth rotating mechanism comprises a rotating platform and a rotating motor, the rotating platform is arranged between the sewing needle and the sewing arm, the rotating motor is connected with the rotating platform and drives the rotating platform to rotate, the cloth reciprocating mechanism is arranged on the upper side of the rotating platform, and the cloth reciprocating mechanism comprises a support rod, a reciprocating rod and a reciprocating motor, the utility model discloses a sewing machine, including reciprocating bar, cloth fixture, lower plate, last splint, reciprocating motor, bracing piece, cloth fixture, control punch holder, lower plate and punch holder, the bracing piece is fixed to be set up on the revolving stage, reciprocating bar slides and connects on the bracing piece, reciprocating motor fixes on the bracing piece for the drive reciprocating bar removes, cloth fixture sets up on reciprocating bar, cloth fixture is including lower plate, punch holder and die clamping cylinder, lower plate fixed connection is at reciprocating bar, and the punch holder is located the upside of lower plate, die clamping cylinder is connected with the punch holder, and whether control punch holder presss from both sides tightly with the lower plate, the lower plate forms the clamping part with the punch holder, the clamping part is equipped with two sets ofly, is located the both sides of sewing needle respectively.

As a further improvement, be equipped with two spaced connecting blocks on the reciprocating lever, two be equipped with coaxial and isometric connecting hole on the connecting block, the rotatable connecting rod that is equipped with in two connecting holes, punch holder fixed connection is on the connecting rod, be equipped with the actuating lever on the connecting rod, be equipped with the driving hole that extends along actuating lever length direction on the actuating lever, be equipped with the promotion groove on the cell wall of driving hole, be equipped with the push rod on the die clamping cylinder, be equipped with the catch bar on the push rod, the push rod is located the driving hole, the catch bar is located the promotion inslot.

As a further improvement of the utility model, the push rod is provided with a roller.

As a further improvement, the support bar is provided with a support groove, the reciprocating bar is provided with a slide bar, the slide bar can slide in the support groove, the upside of the reciprocating bar is provided with a latch, the reciprocating motor is provided with a reciprocating gear, and the reciprocating gear is engaged with the latch.

As a further improvement of the utility model, the slide bar downside is equipped with a plurality of pulleys.

As a further improvement, the lower clamping plate is provided with a lower lug, the upper clamping plate is provided with a plurality of upper lugs, and the lower lug is staggered with the upper lugs.

As a further improvement, the utility model is provided with a lower reinforcing plate between two lower clamping plates and an upper reinforcing plate between two upper clamping plates, and the upper reinforcing plate is opposite to the lower reinforcing plate.

As a further improvement, the operating platform is provided with a rotary groove, the supporting rod is provided with a collecting head, and the collecting head corresponds to the rotary groove.

As a further improvement, the support rod is provided with a ball, and the ball is attached to the operating platform.

As a further improvement, the presser foot device is including two depression bars, the tip of depression bar is equipped with the clamp plate, and the clamp plate is located the both sides of sewing needle respectively, is equipped with between two depression bars and holds the district, actuating lever, push rod and die clamping cylinder are located and hold the district.

The beneficial effects of the utility model are that, can sew out the artificial eye of various shapes, powerful to it is small, the transport is put conveniently. The number and the shape of the sewn false eyes can be changed by setting a program in advance according to the shape of the false eyes to be sewn, the angle and the position of the placed cloth do not need to be adjusted during processing, the operation steps of staff do not need to be adjusted, the operation action is consistent with the position, the staff can produce the false eyes at the highest efficiency without an adaptation period after the shape of the false eyes is changed, and the production and processing efficiency is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a cloth moving device;

FIG. 3 is a schematic diagram of a side view mechanism of the cloth moving device;

FIG. 4 is a schematic structural diagram of a support rod, a ball and an operation table;

FIG. 5 is a schematic view of the reciprocating rod and the supporting rod;

FIG. 6 is a schematic structural view of the reciprocating gear and the latch;

FIG. 7 is a schematic structural view of the clamping portion, the upper bump and the lower bump;

FIG. 8 is a schematic view of the structure of the driving rod, driving hole and pushing groove;

FIG. 9 is a schematic structural view of a clamping cylinder, a push rod and a roller;

fig. 10 is a schematic structural view of an upper reinforcing plate and a lower reinforcing plate.

Description of the labeling: 1. an apparatus body; 11. an operation table; 111. a rotating tank; 112. a pick head; 2. a sewing device; 21. a presser foot device; 211. a pressure lever; 212. pressing a plate; 213. a containment region; 22. a sewing needle; 23. a sewing arm; 24. a drive assembly; 3. a cloth moving device; 31. a material distribution rotating mechanism; 311. a rotating table; 312. a rotating electric machine; 32. a cloth reciprocating mechanism; 321. a support bar; 3211. a support groove; 3212. a ball bearing; 322. a reciprocating lever; 3221. a slide bar; 32211. a pulley; 3222. clamping teeth; 323. a reciprocating motor; 3231. a reciprocating gear; 33. a cloth clamping mechanism; 331. a lower splint; 3311. a lower bump; 332. an upper splint; 3321. an upper bump; 333. a clamping cylinder; 334. a clamping portion; 4. connecting blocks; 41. connecting holes; 42. a connecting rod; 43. a drive rod; 431. a drive aperture; 432. a push groove; 44. a push rod; 45. a push rod; 451. a roller; 51. a lower reinforcing plate; 52. and an upper reinforcing plate.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings.

Referring to fig. 1 to 10, the automatic linking device of the eyelet machine of the present embodiment includes an apparatus body 1, and an operation table 11 disposed on the apparatus body 1, the apparatus body 1 is provided with a sewing device 2, the sewing device 2 includes a presser foot device 21, a sewing needle 22, a sewing arm 23, and a driving component 24 for driving the sewing needle 22 to move, the sewing needle 22 and the presser foot device 21 are disposed on the sewing arm 23, the operation table 11 is provided with a cloth moving device 3, the sewing arm 23 wraps the cloth moving device 3, the cloth moving device 3 includes a cloth rotating mechanism 31, a cloth reciprocating mechanism 32, and a cloth clamping mechanism 33, the cloth rotating mechanism 31 includes a rotating table 311 and a rotating motor 312, the rotating table 311 is disposed between the sewing needle 22 and the sewing arm 23, the rotating motor 312 is connected to the rotating table 311, the rotating platform 311 is driven to rotate, the cloth reciprocating mechanism 32 is arranged on the upper side of the rotating platform 311, the cloth reciprocating mechanism 32 comprises a support rod 321, a reciprocating rod 322 and a reciprocating motor 323, the support rod 321 is fixedly arranged on the rotating platform 311, the reciprocating rod 322 is connected to the support rod 321 in a sliding manner, the reciprocating motor 323 is fixed on the support rod 321, used for driving the reciprocating rod 322 to move, the cloth clamping mechanism 33 is arranged on the reciprocating rod 322, the cloth clamping mechanism 33 comprises a lower clamping plate 331, an upper clamping plate 332 and a clamping cylinder 333, the lower plate 331 is fixedly coupled to the reciprocating rod 322, the upper plate 332 is positioned at an upper side of the lower plate 331, the clamping cylinder 333 is connected with the upper clamping plate 332, controls whether the upper clamping plate 332 is clamped with the lower clamping plate 331, the lower plate 331 and the upper plate 332 form a clamping portion 334, and two sets of the clamping portions 334 are provided, and are respectively located at two sides of the sewing needle 22.

Through the technical scheme, when the sewing machine is used, the clamping cylinder 333 drives the upper clamping plate 332 to be lifted, the presser foot device 21 and the sewing needle 22 are lifted, cloth is placed on the lower clamping plate 331 and the position of the cloth is adjusted, the pedal is stepped on, then the eye prosthesis machine automatically runs a program in the sewing device, the operation of the clamping cylinder 333 is controlled, the clamping cylinder 333 drives the upper clamping plate 332 to be pressed downwards to fix the cloth, then the presser foot device 21 is pressed downwards, the driving component 24 drives the sewing needle 22 to sew, meanwhile, the rotating motor 312 and the reciprocating motor 323 run according to the set eye prosthesis shape, the rotating motor 312 drives the rotating table 311 to rotate, further the cloth reciprocating mechanism 32 and the cloth clamping mechanism 33 are driven to rotate by taking the rotating shaft of the rotating motor 312 as the circle center, further the cloth clamping mechanism 33 on the reciprocating rod 322 is driven to rotate, the reciprocating motor 323 rotates to drive the reciprocating rod 322 to slide, further drives the cloth clamping mechanism 33 on the reciprocating rod 322 to do linear motion, after sewing, the rotating motor 312 rotates to drive the rotating table 311 to rotate, and then drives the material reciprocating mechanism and the cloth clamping mechanism 33 to reset, the reciprocating motor 323 rotates to drive the reciprocating rod 322 to reset, and then drives the cloth clamping mechanism 33 to reset, then the clamping cylinder 333 resets, drives the upper clamp plate 332 to ascend, and then takes off the cloth after sewing. The utility model discloses can sew out the artificial eye of various shapes, powerful to it is small, the transport is put conveniently. The number and the shape of the sewn false eyes can be changed by setting a program in advance according to the shape of the false eyes to be sewn, the angle and the position of the placed cloth do not need to be adjusted during processing, the operation steps of staff do not need to be adjusted, the operation action is consistent with the position, the staff can produce the false eyes at the highest efficiency without an adaptation period after the shape of the false eyes is changed, and the production and processing efficiency is high. The holding portions 334 are divided into two groups, which are respectively located at two sides of the sewing needle 22, so that the cloth is always flat and stable in the process of moving the cloth.

As an improved specific embodiment, two spaced connection blocks 4 are arranged on the reciprocating rod 322, two connection blocks 4 are provided with coaxial and equal-diameter connection holes 41, a connection rod 42 is rotatably arranged in the two connection holes 41, the upper clamp plate 332 is fixedly connected to the connection rod 42, the connection rod 42 is provided with a drive rod 43, the drive rod 43 is provided with a drive hole 431 extending along the length direction of the drive rod 43, the groove wall of the drive hole 431 is provided with a push groove 432, the clamping cylinder 333 is provided with a push rod 44, the push rod 44 is provided with a push rod 45, the push rod 44 is located in the drive hole 431, and the push rod 45 is located in the push groove 432.

Through the technical scheme, when the cloth is clamped, the clamping cylinder 333 operates to drive the push rod 44 to move, the push rod 44 moves to drive the push rod 45 to move, the push rod 45 is located in the driving hole 431 and is firstly abutted against the groove wall of the driving hole 431, then the drive rod 43 is pushed to rotate (in the process, the position of the push rod 45 in the driving hole 431 continuously changes), the drive rod 43 rotates to drive the connecting rod 42 to rotate, and the connecting rod 42 rotates to drive the upper clamping plate 332 to rotate downwards until the cloth is clamped; when the cloth is loosened, the clamping cylinder 333 operates to drive the push rod 44 to move reversely, the push rod 44 moves reversely to drive the push rod 45 to move reversely, and further the drive rod 43 is driven to rotate reversely, and further the connecting rod 42 is driven to rotate reversely, and further the upper clamp plate 332 is driven to rotate upwards until the cloth is loosened. The driving rod 43 rotates to drive the connecting rod 42 to rotate, so that cloth is clamped, the stability is high during clamping, and the stability is uniform during clamping of the clamping parts 334 on the two sides. The existing end part of the upper clamping plate 332 is connected with the end part of the upper clamping plate 332 through the air cylinder, the upper clamping plate 332 is vertically driven to lift, the clamping degree of one end far away from the air cylinder is low, the cloth is easily pulled away in the sewing process, unevenness occurs when the cloth is sewn, and waste products occur. The two pushing rods 45 on the pushing rod 44 are respectively embedded into the driving holes 431 at the two sides, so that the stability is high when the driving rod 43 is pushed to rotate.

As a modified specific embodiment, the pushing rod 45 is provided with a roller 451.

Through above-mentioned technical scheme, gyro wheel 451 offsets with promoting groove 432, reduces frictional force, reduces the consumption of cylinder to can adopt the cylinder of small-specification, reduce cost, energy-concerving and environment-protective, reduce wearing and tearing simultaneously, increase of service life.

As an improved specific embodiment, a supporting groove 3211 is disposed on the supporting rod 321, a sliding rod 3221 is disposed on the reciprocating rod 322, the sliding rod 3221 is slidably disposed in the supporting groove 3211, a latch 3222 is disposed on an upper side of the reciprocating rod 322, a reciprocating gear 3231 is disposed on the reciprocating motor 323, and the reciprocating gear 3231 is engaged with the latch 3222.

Through the technical scheme, when the cloth is driven to reciprocate, the reciprocating motor 323 rotates to drive the reciprocating gear 3231 to rotate so as to drive the reciprocating rod 322 to slide, the sliding rod 3221 is always located in the supporting groove 3211 in the process, the position of the reciprocating rod 322 is stable, and the stability during reciprocating is high.

As a modified specific embodiment, a plurality of pulleys 32211 are disposed on the lower side of the sliding rod 3221.

Through the technical scheme, the pulleys 32211 are abutted against the supporting grooves 3211, so that friction force is reduced, power consumption of the reciprocating motor 323 is reduced, energy is saved, environment is protected, abrasion is reduced, and service life is prolonged.

As a modified specific embodiment, a lower convex block 3311 is provided on the lower clamp plate 331, a plurality of upper convex blocks 3321 are provided on the upper clamp plate 332, and the lower convex blocks 3311 and the upper convex blocks 3321 are staggered.

Through the technical scheme, when the lower clamping plate 331 and the upper clamping plate 332 clamp the cloth, the upper convex blocks 3321 and the lower convex blocks 3311 are respectively positioned at the upper side and the lower side of the cloth, and the upper convex blocks 3321 and the lower convex blocks 3311 are staggered, so that the stability of a clamping position is high when the cloth is clamped.

As a modified specific embodiment, a lower reinforcing plate 51 is disposed between the two lower clamping plates 331, and an upper reinforcing plate 52 is disposed between the two upper clamping plates 332, and the upper reinforcing plate 52 is opposite to the lower reinforcing plate 51.

Through the technical scheme, the contact area of the upper reinforcing plate 52 and the lower reinforcing plate 51 during cloth clamping is increased, and the stability during clamping is further improved.

As a modified specific embodiment, the operating platform 11 is provided with a rotating groove 111, the supporting rod 321 is provided with a pick head 112, and the pick head 112 corresponds to the rotating groove 111.

Through above-mentioned technical scheme, rotating electrical machines 312 drives revolving stage 311 rotation in-process, and the acquisition head 112 is located the swivelling chute 111 all the time, and when rotatory excessively, the acquisition head 112 directly gathers and the operation panel 11 between distance information, and rotating electrical machines 312 counter rotation this moment avoids the debugging in-process revolving stage 311 rotation excessively, and debugging in-process stability is higher. The pick-up head 112 may be an infrared ranging sensor, an ultrasonic ranging sensor, or a laser ranging sensor.

As a modified specific implementation manner, a ball 3212 is arranged below the support rod 321, and the ball 3212 is attached to the console 11.

Through above-mentioned technical scheme, ball 3212 sets up under the bracing piece 321, makes the bracing piece 321 directly inconsistent with operation panel 11 through ball 3212, avoids the bracing piece 321 unsettled, and then reduces the skew power that revolving stage 311, rotating electrical machines 312 received, makes revolving stage 311, rotating electrical machines 312 more stable, increase of service life. In addition, the friction force is small during the rolling process of the balls 3212, and the influence on the rotating motor 312 is small.

As a modified specific embodiment, the presser foot device 21 includes two pressing rods 211, the end of the pressing rod 211 is provided with a pressing plate 212, the pressing plates 212 are respectively located at two sides of the sewing needle 22, an accommodating area 213 is provided between the two pressing rods 211, and the driving rod 43, the push rod 44 and the clamping cylinder 333 are located in the accommodating area 213.

Through the technical scheme, two depression bars 211 drive two clamp plates 212 respectively and push down the both sides of sewing needle 22, skip stitch during avoiding sewing, high in stability, and simultaneously, actuating lever 43, push rod 44 and die clamping cylinder 333 are located and hold district 213, be located between two clamping parts 334, when program control clamping part 334 presss from both sides tight cloth, die clamping cylinder 333 moves and drives push rod 44 and removes, push rod 44 moves and drives actuating lever 43 rotatory, and then hole connecting rod 42 is rotatory, and then drive punch holder 332 rotatory, and then clip the cloth, actuating lever 43 is located the mid point of two clamping parts 334, the punch holder 332 atress of both sides is more even when making the centre gripping, the clamping part 334 clamping degree of both sides is more unified, high in stability during the centre gripping, preferably, actuating lever 43 is located the mid point of two clamping parts 334, stability is higher during the centre gripping.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an automatic linking device of artificial eye machine, including equipment body (1) to and operation panel (11) of setting on equipment body (1), be equipped with sewing device (2) on equipment body (1), sewing device (2) are including presser foot device (21), sewing needle (22), sewing arm (23) and drive sewing needle (22) drive assembly (24) of motion, sewing needle (22), presser foot device (21) set up on sewing arm (23), be equipped with cloth mobile device (3) on operation panel (11), sewing arm (23) parcel cloth mobile device (3), its characterized in that: the cloth moving device (3) comprises a cloth rotating mechanism (31), a cloth reciprocating mechanism (32) and a cloth clamping mechanism (33), wherein the cloth rotating mechanism (31) comprises a rotating table (311) and a rotating motor (312), the rotating table (311) is arranged between a sewing needle (22) and a sewing arm (23), the rotating motor (312) is connected with the rotating table (311) to drive the rotating table (311) to rotate, the cloth reciprocating mechanism (32) is arranged on the upper side of the rotating table (311), the cloth reciprocating mechanism (32) comprises a supporting rod (321), a reciprocating rod (322) and a reciprocating motor (323), the supporting rod (321) is fixedly arranged on the rotating table (311), the reciprocating rod (322) is connected to the supporting rod (321) in a sliding manner, and the reciprocating motor (323) is fixed on the supporting rod (321) and used for driving the reciprocating rod (322) to move, cloth fixture (33) sets up on reciprocating lever (322), cloth fixture (33) is including lower plate (331), punch holder (332) and die clamping cylinder (333), lower plate (331) fixed connection is in reciprocating lever (322), and punch holder (332) is located the upside of lower plate (331), die clamping cylinder (333) are connected with punch holder (332), and whether control punch holder (332) press from both sides tightly with lower plate (331), lower plate (331) and punch holder (332) form clamping part (334), clamping part (334) are equipped with two sets ofly, are located the both sides of sewing needle (22) respectively.

2. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: be equipped with two spaced connecting blocks (4) on reciprocating lever (322), two be equipped with connecting hole (41) coaxial and isodiametric on connecting block (4), rotatable connecting rod (42) that are equipped with in two connecting hole (41), punch holder (332) fixed connection is on connecting rod (42), be equipped with actuating lever (43) on connecting rod (42), be equipped with driving hole (431) that extend along actuating lever (43) length direction on actuating lever (43), be equipped with on the cell wall of driving hole (431) push groove (432), be equipped with push rod (44) on die clamping cylinder (333), be equipped with catch bar (45) on push rod (44), push rod (44) are located driving hole (431), catch bar (45) are located push groove (432).

3. The automatic linking device of an artificial eye machine according to claim 2, characterized in that: the push rod (45) is provided with a roller (451).

4. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: the support rod (321) is provided with a support groove (3211), the reciprocating rod (322) is provided with a sliding rod (3221), the sliding rod (3221) is slidably arranged in the support groove (3211), the upper side of the reciprocating rod (322) is provided with a latch (3222), the reciprocating motor (323) is provided with a reciprocating gear (3231), and the reciprocating gear (3231) is meshed with the latch (3222).

5. The automatic linking device of an artificial eye machine according to claim 4, characterized in that: a plurality of pulleys (32211) are arranged at the lower side of the sliding rod (3221).

6. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: the lower clamping plate (331) is provided with a lower convex block (3311), the upper clamping plate (332) is provided with a plurality of upper convex blocks (3321), and the lower convex block (3311) and the upper convex block (3321) are staggered.

7. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: a lower reinforcing plate (51) is arranged between the two lower clamping plates (331), an upper reinforcing plate (52) is arranged between the two upper clamping plates (332), and the upper reinforcing plate (52) is opposite to the lower reinforcing plate (51).

8. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: the operating platform (11) is provided with a rotating groove (111), the supporting rod (321) is provided with a collecting head (112), and the collecting head (112) corresponds to the rotating groove (111).

9. The automatic linking device of an artificial eye machine according to claim 1, characterized in that: the support rod (321) is provided with a ball (3212) under, and the ball (3212) is attached to the operating platform (11).

10. The automatic linking device of an artificial eye machine according to claim 2, characterized in that: the presser foot device (21) comprises two pressure rods (211), the end parts of the pressure rods (211) are provided with pressure plates (212), the pressure plates (212) are respectively positioned at two sides of the sewing needle (22), an accommodating area (213) is arranged between the two pressure rods (211), and the driving rod (43), the push rod (44) and the clamping cylinder (333) are positioned in the accommodating area (213).