CN220901630U - Side punching die for automobile armrest hinge - Google Patents

Abstract

The utility model discloses a side punching die of an automobile armrest hinge, which comprises a die holder, a first vertical plate, a second vertical plate, a moving assembly, a clamping assembly, a side punching assembly and a bearing assembly, wherein the first vertical plate is fixedly arranged on the left side of the top of the die holder, the second vertical plate is fixedly arranged on the right side of the top of the die holder, the moving assembly is arranged on the die holder, the clamping assembly is arranged on the moving assembly, the side punching assembly is arranged on the first vertical plate, and the bearing assembly is arranged on the second vertical plate. The utility model has reasonable design and good practicability, and can apply a certain bearing force to the automobile armrest hinge in the process of carrying out side punching processing on the automobile armrest hinge which is clamped and fixed, so that the bearing force is opposite to the acting force applied to the automobile armrest hinge by the punching rod, further, the deformation of the punching part of the automobile armrest hinge caused by stress can be effectively avoided, and the side punching quality of the automobile armrest hinge is improved.

Description

Side punching die for automobile armrest hinge

Technical Field

The utility model relates to the technical field of dies, in particular to a side punching die for an automobile armrest hinge.

Background

The mould is a variety of moulds and tools used for injection moulding, blow moulding, extrusion, die casting or forging, smelting, stamping and other methods in industrial production to obtain the required products. In short, a mold is a tool for making a molded article, which is composed of various parts, and a different mold is composed of different parts, which realizes the processing of the outer shape of the article mainly by changing the physical state of the molded material. Nowadays, along with the increasing utilization rate of automobiles, the automobile manufacturing industry is also continuously developed, and the production and the manufacture of automobile accessories are also increasing at any time, and in the process of processing and manufacturing the automobile armrest hinge, side punching processing is required to be carried out on the automobile armrest hinge, a side punching die is used, so that the assembly of the automobile armrest hinge after subsequent side punching processing is convenient. Through searching, chinese patent with the authority bulletin number of CN218134354U announces a side punching die of a vehicle part, which is used for fixing the vehicle part on the clamping frame, and comprises a processing table, the clamping frame and a punching mechanism, wherein the clamping frame is fixedly connected with the processing table; the punching mechanism comprises a support, an air cylinder, a connecting seat, two elastic pieces, an isolation cover and a punching rod; the support is fixedly connected with the processing table, the air cylinder is fixedly connected with the support, the connecting seat is fixedly connected with the air cylinder output rod, the two elastic pieces are respectively fixedly connected with the connecting seat, the isolation cover is respectively fixedly connected with the two elastic pieces, and the isolation cover is provided with a slot; the isolation cover is pushed by the air cylinder to be in contact with the automobile part on the clamping frame, at the moment, the elastic piece can shrink, then the punching rod can be in contact with the automobile part to punch holes, and scraps generated by punching can be blocked by the isolation cover, so that the situation that the scraps generated during punching splash to cause injury to other workers is avoided.

The above solution has been found to still have at least the following drawbacks in practice: when the automobile armrest hinge is used for side punching, a punching rod can apply certain horizontal punching force to the automobile armrest hinge to punch the automobile armrest hinge, however, the other corresponding side surface of the automobile armrest hinge does not have certain bearing acting force for counteracting the horizontal punching force born by the automobile armrest hinge, the situation that the punching position of the automobile armrest hinge is stressed to deform is easily caused, and the side punching processing quality is reduced.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a side punching die of an automobile armrest hinge, which solves the problems that when the side punching die is used for processing the automobile armrest hinge, the stress of the punching part of the automobile armrest hinge is easy to deform and the processing quality of the side punching is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a side punching die of car handrail hinge, includes die holder, first riser, second riser, removes subassembly, clamping subassembly, side punching subassembly and bears the subassembly, first riser fixed mounting is in the top left side of die holder, and second riser fixed mounting is on the top right side of die holder, removes the subassembly setting on the die holder, and clamping subassembly sets up on removing the subassembly, and side punching subassembly sets up on first riser, bears the subassembly setting on the second riser.

Preferably, the moving assembly comprises a longitudinal electric sliding rail, an electric sliding seat and a supporting seat, the top of the die holder is provided with a groove between the first vertical plate and the second vertical plate, the longitudinal electric sliding rail is fixedly arranged in the groove, the electric sliding seat is slidably arranged on the longitudinal electric sliding rail, the top of the electric sliding seat extends out of the groove, and the supporting seat is fixedly arranged at the top of the electric sliding seat.

Preferably, a plurality of balls are nested at the bottom of the supporting seat, the balls are symmetrically arranged at equal intervals in pairs, and the balls are in rolling contact with the top of the die holder.

Preferably, the clamping assembly comprises a U-shaped frame, two electric push rods and two clamping plates, wherein the U-shaped frame is fixedly arranged at the top of the supporting seat, the two electric push rods are respectively and fixedly arranged on the front outer wall and the rear outer wall of the U-shaped frame, the output shaft ends of the two electric push rods respectively slide and penetrate through the front side wall and the rear side wall of the U-shaped frame, and the two clamping plates are respectively and fixedly arranged at the output shaft ends of the corresponding electric push rods.

Preferably, the side punching assembly comprises a first cylinder, a first mounting disc, a punching rod, two first transverse guide rods, a protective cover, two first springs and two limiting blocks, wherein the first cylinder is fixedly arranged on the left side wall of a first vertical plate, the first mounting disc is fixedly arranged at the output shaft end of the first cylinder, the punching rod is fixedly arranged on the right side wall of the first mounting disc, two first guide holes are formed in one side of the first mounting disc, the punching rod is positioned between the two first guide holes, the two first transverse guide rods are respectively and slidably arranged in the corresponding first guide holes, the protective cover is fixedly arranged at the right ends of the two first transverse guide rods, the right side of the protective cover is of an opening structure, a through hole is formed in the left side wall of the protective cover, the right ends of the punching rod are respectively and slidably penetrating through the through hole, the right ends of the two first springs are fixedly connected with the outer wall of the protective cover, the left ends of the two first springs are respectively and fixedly connected with the right side wall of the first mounting disc, the two first springs are respectively sleeved on the corresponding first guide rods, the two corresponding transverse guide rods are respectively and the left guide holes are respectively and fixedly arranged at the bottoms of the corresponding limiting blocks.

Preferably, the bearing assembly comprises a second cylinder, a second mounting disc, a plurality of second transverse guide rods, a plurality of abutting plates, a plurality of rubber pads, a plurality of connecting plates and a plurality of second springs, wherein the second cylinder is fixedly arranged on the left side wall of the second vertical plate, the second mounting disc is fixedly arranged at the output shaft end of the second cylinder, the plurality of second guide holes are formed in one side of the second mounting disc, the plurality of second guide holes are distributed in an equidistant annular mode by taking the punching rods as axes, the plurality of second transverse guide rods are respectively and slidably arranged in the corresponding second guide holes, the plurality of abutting plates are respectively and fixedly arranged at the left ends of the corresponding second transverse guide rods, the plurality of rubber pads are respectively and fixedly arranged on the left side walls of the corresponding abutting plates, the plurality of connecting plates are respectively and fixedly arranged at the right ends of the corresponding second transverse guide rods, the left ends of the plurality of second springs are respectively and fixedly connected with the corresponding connecting plates, the right ends of the plurality of second springs are respectively and fixedly connected with the right side walls of the second mounting disc, and the plurality of second springs are respectively sleeved on the corresponding second transverse guide rods.

The utility model provides a side punching die of an automobile armrest hinge. The beneficial effects are as follows:

(1) This side cut-out press of car handrail hinge through utilizing the removal subassembly that comprises vertical electronic slide rail, electronic slide and supporting seat combination, is convenient for carry out horizontal vertical regulation to clamping subassembly, and then can shift out between side punching subassembly and the bearing assembly to clamping subassembly, presss from both sides tightly fixedly or dismouting to car handrail hinge again and takes off, avoids the spare part fish tail operating personnel's on side punching subassembly and the bearing assembly hand.

(2) According to the side punching die for the automobile armrest hinge, the clamping assembly formed by combining the U-shaped frame, the two electric push rods and the two clamping plates is utilized, so that the automobile armrest hinge can be firmly and stably clamped and fixed, and further side punching processing of the automobile armrest hinge is guaranteed.

(3) This side cut-out press of car handrail hinge through utilizing the side punching subassembly that constitutes by first cylinder, first mounting disc, punching rod, two first horizontal guide bars, protection casing, two first springs and two stopper combinations, can carry out side punching processing to car handrail hinge to in side punching processing, can block the piece that produces when punching processing, avoid piece splash and the accidental injury operating personnel.

(4) This side cut-out press of car handrail hinge through utilizing the carrier assembly who constitutes by second cylinder, second mounting disc, a plurality of second transverse guide pole, a plurality of butt plate, a plurality of rubber pad, a plurality of connecting plate and a plurality of second spring combination, can apply to car handrail hinge certain bearing capacity for this bearing capacity is opposite with the effort direction that the pole of punching a hole was applied to car handrail hinge, and then can effectually avoid car handrail hinge's punching part atress to take place to warp, can improve the side punching quality to car handrail hinge.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the front view of the present utility model;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

In the figure: 1. a die holder; 2. a first riser; 3. a second riser; 4. a groove; 5. a longitudinal electric slide rail; 6. an electric slide; 7. a support base; 8. a U-shaped frame; 9. an electric push rod; 10. a clamping plate; 11. a first cylinder; 12. a first mounting plate; 13. punching a hole rod; 14. a first lateral guide bar; 15. a protective cover; 16. a first spring; 17. a limiting block; 18. a blanking port; 19. a second cylinder; 20. a second mounting plate; 21. a second lateral guide bar; 22. a retaining plate; 23. a rubber pad; 24. a connecting plate; 25. and a second spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-4, the present utility model provides a technical solution: the utility model provides a side punching die of car handrail hinge, includes die holder 1, first riser 2, second riser 3, remove subassembly, clamping subassembly, side punching subassembly and bears the weight of the subassembly, wherein:

The first riser 2 fixed mounting is in the top left side of die holder 1, the top right side of second riser 3 fixed mounting at die holder 1, the moving assembly sets up on die holder 1, clamping subassembly sets up on the moving assembly, the side punching subassembly sets up on first riser 2, bearing assembly sets up on second riser 3, moving assembly is used for controlling clamping subassembly and carries out horizontal longitudinal movement, conveniently shift out clamping subassembly and press from both sides tight fixedly or dismouting to car handrail hinge again between side punching subassembly and the bearing assembly and take off, spare part fish tail operating personnel's on avoiding side punching subassembly and the bearing assembly hand, clamping subassembly is used for pressing from both sides tight fixedly car handrail hinge, side punching subassembly is used for pressing from both sides tight fixedly to pressing from both sides tight car handrail hinge that is fixed, the bearing assembly is used for bearing the support to car handrail hinge position that punches a hole, in the punching process to car handrail hinge position atress is great and take place to warp and influence the quality of punching.

In the application, the moving assembly comprises a longitudinal electric slide rail 5, an electric slide seat 6 and a supporting seat 7, a groove 4 positioned between a first vertical plate 2 and a second vertical plate 3 is formed at the top of a die holder 1, the longitudinal electric slide rail 5 is fixedly arranged in the groove 4, the electric slide seat 6 is slidably arranged on the longitudinal electric slide rail 5, the top of the electric slide seat 6 extends out of the groove 4, the supporting seat 7 is fixedly arranged at the top of the electric slide seat 6, the supporting seat 7 can be controlled to horizontally and longitudinally move by utilizing the sliding connection and matching of the electric slide seat 6 on the longitudinal electric slide rail 5, so that the supporting seat 7 drives a clamping assembly to horizontally and longitudinally move, the clamping assembly comprises a U-shaped frame 8, two electric push rods 9 and two clamping plates 10, the U-shaped frame 8 is fixedly arranged at the top of the supporting seat 7, the two electric push rods 9 are fixedly arranged on the front side outer wall and the rear side outer wall of the U-shaped frame 8 respectively, the output shaft ends of the two electric push rods 9 respectively slide and penetrate through the front side wall and the rear side wall of the U-shaped frame 8, the two clamping plates 10 are respectively and fixedly arranged at the output shaft ends of the corresponding electric push rods 9, the electric push rods 9 are used for controlling the clamping plates 10 to move horizontally, the automobile armrest hinge clamps can be fixedly arranged in the U-shaped frame 8 by utilizing the two clamping plates 10, the side punching assembly comprises a first air cylinder 11, a first mounting plate 12, a punching rod 13, two first transverse guide rods 14, a protective cover 15, two first springs 16 and two limiting blocks 17, the first air cylinder 11 is fixedly arranged on the left side wall of the first vertical plate 2, the first mounting plate 12 is fixedly arranged at the output shaft end of the first air cylinder 11, the punching rod 13 is fixedly arranged on the right side wall of the first mounting plate 12, one side of the first mounting plate 12 is provided with two first guide holes, the punching rod 13 is positioned between the two first guide holes, the two first transverse guide rods 14 are respectively and slidably arranged in corresponding first guide holes, the protective cover 15 is fixedly arranged at the right ends of the two first transverse guide rods 14, the right side of the protective cover 15 is of an opening structure, a through hole is formed in the left side wall of the protective cover 15, the right end of the punching rod 13 is slidably penetrated through the through hole, the right ends of the two first springs 16 are respectively and fixedly connected with the outer wall of the protective cover 15, the left ends of the two first springs 16 are respectively and fixedly connected with the right side wall of the first mounting disc 12, the two first springs 16 are respectively sleeved on the corresponding first transverse guide rods 14, the two limiting blocks 17 are respectively and fixedly arranged at the left ends of the corresponding first transverse guide rods 14, a blanking hole 18 is formed in the bottom wall of the protective cover 15, the first cylinder 11 is used for controlling the first mounting disc 12 to horizontally and transversely move, the punching rod 13 is used for punching an automobile handrail hinge, the protective cover 15 can be controlled to automatically reset by utilizing the elastic force of the first spring 16, the protective cover 15 is used for blocking scraps generated during punching processing, avoiding the scraps from splashing and injuring operators, the blanking port 18 is used for discharging the scraps entering the protective cover 15, the bearing assembly comprises a second air cylinder 19, a second mounting plate 20, a plurality of second transverse guide rods 21, a plurality of abutting plates 22, a plurality of rubber pads 23, a plurality of connecting plates 24 and a plurality of second springs 25, the second air cylinder 19 is fixedly arranged on the left side wall of the second vertical plate 3, the second mounting plate 20 is fixedly arranged at the output shaft end of the second air cylinder 19, a plurality of second guide holes are formed in one side of the second mounting plate 20, the second guide holes are distributed in an equidistant annular mode by taking the punching rods 13 as axes, the second transverse guide rods 21 are respectively and slidably arranged in the corresponding second guide holes, the plurality of the retaining plates 22 are respectively and fixedly arranged at the left ends of the corresponding second transverse guide rods 21, the plurality of rubber pads 23 are respectively and fixedly arranged on the left side walls of the corresponding retaining plates 22, the plurality of connecting plates 24 are respectively and fixedly arranged at the right ends of the corresponding second transverse guide rods 21, the left ends of the plurality of the second springs 25 are respectively and fixedly connected with the corresponding connecting plates 24, the right ends of the plurality of the second springs 25 are respectively and fixedly connected with the right side walls of the second mounting plates 20, the plurality of the second springs 25 are respectively sleeved on the corresponding second transverse guide rods 21, the second air cylinders 19 are used for controlling the second mounting plates 20 to horizontally move, the reactive force in the horizontal direction of the corresponding second transverse guide rods 21 and the retaining plates 22 can be applied by utilizing the elastic force generated when the plurality of the second springs 25 are subjected to stretching deformation, and then the retaining plates 22 can be applied to a certain bearing force of the automobile armrest hinge, the bearing force is opposite to the acting force direction of the automobile armrest hinge, and the punching force bearing force applied to the automobile armrest hinge can be effectively avoided.

In this embodiment, a plurality of balls are nested at the bottom of the supporting seat 7, and are disposed in an equidistant and pairwise symmetrical manner, and are in rolling contact with the top of the die holder 1, so as to improve the smoothness of the supporting seat 7 during movement.

In this embodiment, it should be noted that, a multi-control switch is installed at a suitable position on the die holder 1, and the longitudinal electric sliding rail 5, the electric sliding seat 6, the two electric push rods 9, the first air cylinder 11, the second air cylinder 19 and the multi-control switch are electrically connected with an external power line sequentially through wires, and the control switch can be used for respectively controlling the energizing operation of the longitudinal electric sliding rail 5, the electric sliding seat 6, the two electric push rods 9, the first air cylinder 11 and the second air cylinder 19.

Through the structure, the side punching die of the automobile armrest hinge can apply a certain bearing force to the automobile armrest hinge in the side punching process of the clamped and fixed automobile armrest hinge, so that the bearing force is opposite to the acting force applied to the automobile armrest hinge by the punching rod 13, further the stress deformation of the punching part of the automobile armrest hinge can be effectively avoided, the side punching quality of the automobile armrest hinge is improved, an operator stands at the proper position of the front side of the die holder 1, firstly, the electric sliding seat 6 is controlled to slide in the direction of horizontally approaching the operator on the longitudinal electric sliding rail 5, the electric sliding seat 6 can drive the supporting seat 7 and the U-shaped frame 8 to move out between the side punching assembly and the bearing assembly, then the automobile armrest hinge is placed between the two clamping plates 10, the two electric push rods 9 are started to operate, the two clamping plates 10 can be controlled to move towards the directions close to each other and tightly collide with the two side edges of the automobile armrest hinge, namely the automobile armrest hinge is tightly clamped and fixed in the U-shaped frame 8, the electric sliding seat 6 is controlled to slide on the longitudinal electric sliding rail 5 horizontally away from the direction of an operator, the automobile armrest hinge which is clamped and fixed can be moved back between the side punching assembly and the bearing assembly, when the punching rod 13 is aligned with the position of the automobile armrest hinge which needs punching, the electric sliding seat 6 stops sliding, then the second air cylinder 19 is started to operate, the second air cylinder 19 drives the second mounting disc 20, the plurality of second transverse guide rods 21, the plurality of retaining plates 22, the plurality of rubber pads 23, the plurality of connecting plates 24 and the plurality of second springs 25 to horizontally move, and when the plurality of rubber pads 23 tightly collide with one side surface of the automobile armrest hinge, when the second springs 25 are controlled to stretch for a certain length, the second cylinder 19 is stopped to run, then the first cylinder 11 is restarted to run, the first cylinder 11 can control the first mounting disc 12, the punching rod 13, the two first transverse guide rods 14, the protective cover 15 and the two first springs 16 to move horizontally, when the protective cover 15 is abutted against the other side face of the automobile armrest hinge, the protective cover 15 is not moved any more, as the first cylinder 11 continues to run, the two first springs 16 are gradually compressed, the right end of the punching rod 13 can perform side punching on the automobile armrest hinge when gradually moving out of the protective cover 15, in the side punching process, the elastic force generated by the second springs 25 during the stretching deformation is utilized, the reactive force in the horizontal direction of the corresponding second transverse guide rods 21 and the retaining plates 22 can be applied to the automobile armrest hinge, the bearing force can be applied to the automobile armrest hinge by the retaining plates 22, the bearing force is opposite to the acting force direction of the automobile armrest hinge, the bearing force can be effectively avoided, the punching position of the automobile armrest hinge is deformed, the quality can be improved, the punched hole can be controlled to be reset to the side of the automobile armrest hinge is reset, the electric sliding seat is controlled to move down, and the side of the automobile armrest hinge is reset to be moved down, and a sliding seat is controlled to move down, and a sliding seat is moved to the side by the electric sliding seat is moved to be close to the side of the automobile armrest hinge 9.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (6)

1. A side punching die of an automobile armrest hinge is characterized in that: including die holder (1), first riser (2), second riser (3), remove subassembly, clamping subassembly, side punching subassembly and bearing assembly, first riser (2) fixed mounting is in the top left side of die holder (1), second riser (3) fixed mounting is in the top right side of die holder (1), it is in to remove the subassembly setting on die holder (1), the clamping subassembly sets up on the removal subassembly, side punching subassembly sets up on first riser (2), bearing assembly sets up on second riser (3).

2. The side hole punching die for an automobile armrest hinge as set forth in claim 1, wherein: the movable assembly comprises a longitudinal electric sliding rail (5), an electric sliding seat (6) and a supporting seat (7), a groove (4) between a first vertical plate (2) and a second vertical plate (3) is formed in the top of the die holder (1), the longitudinal electric sliding rail (5) is fixedly installed in the groove (4), the electric sliding seat (6) is slidably installed on the longitudinal electric sliding rail (5), the top of the electric sliding seat (6) extends out of the groove (4), and the supporting seat (7) is fixedly installed at the top of the electric sliding seat (6).

3. The side hole punching die for the automobile armrest hinge as set forth in claim 2, wherein: the bottom of supporting seat (7) nests has a plurality of balls, and a plurality of the ball is equidistant pairwise symmetry setting, a plurality of the ball all with the top rolling contact of die holder (1).

4. The side hole punching die for the automobile armrest hinge as set forth in claim 2, wherein: clamping subassembly includes U type frame (8), two electric putter (9) and two splint (10), U type frame (8) fixed mounting is in the top of supporting seat (7), two electric putter (9) are fixed mounting respectively on the front side outer wall and the rear side outer wall of U type frame (8), two electric putter (9) output shaft end slides respectively and runs through the front side wall and the rear side wall of U type frame (8), two splint (10) are fixed mounting respectively in corresponding electric putter (9) output shaft end.

5. The side hole punching die for an automobile armrest hinge as set forth in claim 1, wherein: the side punching assembly comprises a first air cylinder (11), a first mounting disc (12), a punching rod (13), two first transverse guide rods (14), a protective cover (15), two first springs (16) and two limiting blocks (17), wherein the first air cylinder (11) is fixedly mounted on the left side wall of a first vertical plate (2), the first mounting disc (12) is fixedly mounted on the output shaft end of the first air cylinder (11), the punching rod (13) is fixedly mounted on the right side wall of the first mounting disc (12), one side of the first mounting disc (12) is provided with two first guide holes, the punching rod (13) is positioned between the two first guide holes, the two first transverse guide rods (14) are respectively and slidably mounted in the corresponding first guide holes, the protective cover (15) is fixedly mounted on the right ends of the two first transverse guide rods (14), the right side wall of the protective cover (15) is of an opening structure, one side wall of the protective cover (15) is fixedly mounted on the right side wall of the first mounting disc (12), the left side wall (15) is provided with two first guide holes (16) are fixedly connected with the right side wall (16) of the first springs, the right side wall (16) is fixedly connected with the right side wall (16) through the first springs, the two first springs (16) are respectively sleeved on the corresponding first transverse guide rods (14), the two limiting blocks (17) are respectively and fixedly installed at the left ends of the corresponding first transverse guide rods (14), and blanking openings (18) are formed in the bottom wall of the protective cover (15).

6. The side-piercing die for an automotive armrest hinge as set forth in claim 5, wherein: the bearing assembly comprises a second air cylinder (19), a second mounting disc (20), a plurality of second transverse guide rods (21), a plurality of retaining plates (22), a plurality of rubber pads (23), a plurality of connecting plates (24) and a plurality of second springs (25), wherein the second air cylinder (19) is fixedly arranged on the left side wall of the second vertical plate (3), the second mounting disc (20) is fixedly arranged on the output shaft end of the second air cylinder (19), one side of the second mounting disc (20) is provided with a plurality of second guide holes, the plurality of second guide holes take punching rods (13) as axes and are distributed in an equidistant annular shape, the plurality of second transverse guide rods (21) are respectively and slidably arranged in the corresponding second guide holes, the plurality of retaining plates (22) are respectively and fixedly arranged at the left side wall of the corresponding second transverse guide rods (21), the plurality of rubber pads (23) are respectively and fixedly arranged on the left side wall of the corresponding retaining plates (22), the plurality of connecting plates (24) are respectively and fixedly arranged at the left side wall of the corresponding second transverse guide rods (21) and are respectively and fixedly connected with the right side wall of the corresponding second transverse guide rods (25), the second springs (25) are respectively sleeved on the corresponding second transverse guide rods (21).