Plastic-coated support flexibility testing machine for automobile side plate assembly line

By designing a flexible testing machine for plastic-encapsulated brackets for automotive side panel assembly production lines, the problem of low manual inspection efficiency in the prior art is solved, automated inspection and solder joint inspection are realized, and production efficiency is improved.

CN222652535UActive Publication Date: 2025-03-21JILIN DONGXIN TOOLING EQUIP CO LTD
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Patent Information

Application Number
CN202420647837.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-01
Publication Date
2025-03-21
Estimated Expiration
2034-04-01

AI Technical Summary

Technical Problem

In the prior art, the flexibility of plastic-encapsulated brackets on the automotive side panel assembly production line relies on manual inspection, which is inefficient and is not suitable for mass production.

Method used

Design a flexible testing machine for plastic-encapsulated brackets, including a workbench, material pickup mechanism, grab mechanism, flexibility testing mechanism and welding joint inspection mechanism. The flexibility of the plastic-clad bracket is detected by the cylinder, and the swing arm and positioning pin are used to achieve automatic inspection.

Benefits of technology

The automated flexibility inspection of plastic-encapsulated brackets and the inspection of side plate welding joints are realized, which improves production efficiency and reduces the time and labor intensity of manual operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a plastic-coated support flexibility testing machine for an automobile side plate assembly line, and belongs to the technical field of production line assembly detection equipment. The device comprises a working rack, the material taking mechanism is arranged above the working rack and can perform transverse reciprocating displacement, and a base plate capable of ascending and descending is hoisted at the lower part of the material taking mechanism; the grabbing mechanism and the flexibility testing mechanism are arranged on the substrate; wherein the grabbing mechanism is provided with a clamping device, and the clamping device can clamp or release a side plate through a clamping block; the flexibility testing mechanism is provided with a swing arm capable of swinging back and forth, and the tail end of the swing arm is fixedly connected with a positioning pin matched with the plastic-coated bracket; the blanking turnover mechanism is arranged on one side of the working rack, the blanking turnover mechanism is provided with a material box, a hinge shaft is arranged on one side of the material box, and the material box can turn over around the hinge shaft relative to the working rack for blanking. According to the utility model, the flexibility of automatic detection of the plastic-coated bracket is realized, batch production is facilitated, time and labor are saved, and the production efficiency is effectively improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of production line assembly detection equipment, in particular to a plastic-coated bracket flexibility testing machine used in an automobile side panel assembly production line. Background Art

[0002] At present, automobile side panels are produced by using automobile side panel assembly production lines. The automobile side panels are movably connected with plastic-coated brackets, and the automobile side panels are divided into left and right parts. The two left and right parts can be assembled at the same time on the assembly line, that is, the production line works in double stations. After completing the assembly process, the plastic-coated bracket needs to be tested for flexibility. The traditional method is manual inspection, which is time-consuming, labor-intensive, inefficient, and not conducive to mass production. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line, which can not only use a cylinder to detect the flexibility of the plastic-coated bracket, but also detect whether the side panel has welding spots, saving time and effort and effectively improving production efficiency.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model discloses a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line, comprising:

[0006] Workbench;

[0007] A material taking mechanism arranged above the workbench and capable of horizontally reciprocating movement, wherein a base plate capable of being raised and lowered is suspended at the lower part of the material taking mechanism; and

[0008] A gripping mechanism and a flexibility testing mechanism installed on the substrate;

[0009] Wherein, the gripping mechanism has a clamp, and the clamp can clamp or release the side plate through a clamping block;

[0010] The flexibility testing mechanism has a swing arm that can swing back and forth, and the end of the swing arm is fixedly connected to a positioning pin that cooperates with the plastic-coated bracket; and

[0011] The material unloading and turning mechanism arranged at one side of the workbench has a material box, one side of the material box is provided with a hinge axis, and the material box can be turned around the hinge axis relative to the workbench to unload materials.

[0012] Furthermore, the material taking mechanism includes a pillar, a top plate fixedly connected to the pillar, a linear guide rail fixedly connected to the lower part of the top plate, and the linear guide rail is fixedly connected to the vertical plate through a slide seat; and

[0013] A transverse driver fixedly connected to the top plate and a longitudinal driver fixedly connected to the vertical plate;

[0014] The transverse driver is connected to the slide and drives the slide to move back and forth transversely. The longitudinal driver suspends the substrate and drives the substrate to move up and down through the longitudinal driver.

[0015] Furthermore, the flexibility testing mechanism includes a fixed shaft fixedly connected to the base plate and a driver for driving the swing arm to swing;

[0016] The middle part of the swing arm is rotatably connected to the fixed shaft, one end of the swing arm is connected to the driver, and the other end is fixedly connected to the positioning pin.

[0017] Furthermore, the flexibility testing mechanism also includes a pressure block that can be raised and lowered and cooperates with the swing arm. A driver is fixedly connected to the upper surface of the base plate, and the driver passes through the base plate and is connected to the pressure block.

[0018] Furthermore, the material unloading and flipping mechanism includes a base plate fixedly connected to the workbench, one side of the base plate is rotatably connected to the material box through the hinge axis, and the other side is fixedly connected to a driver, and the driver passes through the base plate and is connected to the material box away from the hinge axis end.

[0019] Furthermore, the clamp is a clamping cylinder, piston rods at both ends of the clamping cylinder are fixedly connected with clamping claws, the clamping claws are fixedly connected with the clamping blocks, and the clamping cylinder is located between the two clamping blocks and is fixedly connected with a positioning pin in contact with the side plate.

[0020] Furthermore, two groups of the gripping mechanisms and two groups of flexibility testing mechanisms are symmetrically arranged on the lower surface of the substrate.

[0021] Furthermore, the driver is a cylinder.

[0022] Furthermore, it also includes a material discharge tray for receiving the material discharged from the material box;

[0023] The unloading tray comprises a tray support and a material tray which is installed on the top of the tray support and is tilted.

[0024] Furthermore, it also includes a welding point inspection mechanism, the substrate is fixedly connected to the welding point inspection mechanism at the end of the grasping mechanism, and the welding point inspection mechanism is fixedly connected to proximity switches at the corresponding side plate welding point positions.

[0025] In the above technical solution, the utility model provides a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line, which has the following beneficial effects:

[0026] The utility model designs a flexibility test machine for a plastic-wrapped bracket, wherein the base plate of the material-retrieving mechanism can be lifted and lowered and can be moved back and forth horizontally in linkage, and a gripping mechanism and a flexibility test mechanism are arranged on the lower surface of the base plate, and the clamping cylinder of the gripping mechanism can clamp or release the side plate through a clamping block, so that the side plate is clamped on the table panel and then transferred to the material box for release, and tested on the two boxes, and the flexibility test mechanism has a swing arm, which can swing back and forth, and a positioning pin is fixedly connected to the end of the swing arm, and the positioning pin cooperates with the axis hole of the plastic-wrapped bracket to realize the flexibility test of the plastic-wrapped bracket on the side plate under the reciprocating swinging motion of the swing arm;

[0027] In addition, a solder joint inspection mechanism is fixedly connected to the gripping mechanism end of the substrate, and the solder joint inspection mechanism checks whether the solder joints on the upper side of the side plate are leaking through a proximity switch;

[0028] The plastic-coated bracket flexibility testing machine can not only use the cylinder to detect the flexibility of the plastic-coated bracket to achieve the purpose of automated detection, but also can detect whether there are welding points on the side panels, which is conducive to mass production, saves time and labor, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 This is a front view of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0031] Figure 2 It is a left view of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0032] Figure 3 This is a front view of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0033] Figure 4 It is a bottom view of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed by the utility model;

[0034] Figure 5 This is an axonometric diagram of a base plate of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0035] Figure 6This is a front view of a substrate of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0036] Figure 7 It is a left view of a substrate of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0037] Figure 8 It is a top view of a substrate of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0038] Fig. 9 This is a front view of a material unloading and flipping mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0039] Fig.10 This is a front view of a material unloading tray of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0040] Fig.11 This is a left view of a material unloading tray of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line disclosed in the utility model;

[0041] Fig.12 The utility model discloses an axonometric diagram of another embodiment of a base plate of a material taking mechanism of a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line.

[0042] Description of reference numerals:

[0043] 10. Workbench; 11. Workbench top; 12. Footing;

[0044] 20. Material taking mechanism; 21. Pillar; 22. Top plate; 23. Linear guide rail; 231. Sliding seat; 232. Vertical plate; 24. Buffer; 25. Adjustment screw; 26. Base plate; 27. Transverse cylinder; 28. Lifting cylinder;

[0045] 30. Grasping mechanism; 31. Clamping cylinder; 32. Clamping claw; 33. Clamping block; 34. Positioning pin;

[0046] 40. Flexibility test mechanism: 41. Swing arm; 42. Fixed shaft; 43. Test cylinder; 44. Press block; 45. Press block cylinder; 46. Hinge shaft; 47. Positioning pin; 48. Fixed pin;

[0047] 50. Material unloading and turning mechanism; 51. Support; 52. Bottom plate; 53. Material box; 54. Turning cylinder; 55. Hinge shaft; 56. Connecting rod;

[0048] 60. unloading tray; 61. tray bracket; 62. material tray; 63. support shaft; 64. hinge shaft;

[0049] 70. Welding point inspection mechanism; 71. Hanger; 72. Proximity switch. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] See also Figure 1 As shown;

[0052] The utility model discloses a plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line, comprising:

[0053] A workbench 10, a material taking mechanism 20 arranged above the workbench 10 and capable of horizontally reciprocating movement, a base plate 26 capable of being raised and lowered is suspended at the lower part of the material taking mechanism 20, and a gripping mechanism 30 and a flexibility testing mechanism 40 installed on the base plate 26;

[0054] The gripping mechanism 30 has a clamp, which can clamp or release the side plate through a clamp block 33, and the flexibility testing mechanism 40 has a swing arm 41 that can swing back and forth, and a positioning pin that cooperates with the plastic-coated bracket is fixedly connected to the end of the swing arm 41;

[0055] The material unloading and turning mechanism 50 is arranged on one side of the workbench 10. The material unloading and turning mechanism 50 has a material box 53. A hinge axis is arranged on one side of the material box 53, and the material box 53 can turn over relative to the workbench 10 around the hinge axis to unload materials.

[0056] For details, see Figure 1 , 2As shown, the workbench 10 is welded by 60X60mm square tubes, and a table panel 11 is laid on it. A foot 12 is installed at the bottom of the workbench 10, and it contacts the ground through the foot 12. The table panel 11 on the upper part of the workbench 10 is equipped with a material picking mechanism 20, and the material picking mechanism 20 can be moved back and forth horizontally, and a base plate 26 that can be lifted and lowered is hoisted at the bottom of the material picking mechanism 20. That is to say, the base plate 26 can be lifted and lowered and can be moved back and forth horizontally in linkage to achieve switching between the table panel 11 and the material box 53 of the material unloading flipping mechanism 50. The lower surface of the base plate 26 is provided with The gripping mechanism 30 and the flexibility testing mechanism 40, the gripping mechanism 30 has a clamp, the clamp is a clamping cylinder 31, the clamp can clamp or release the side plate through the clamp block 33, so that after clamping the side plate on the table panel 11, it is transferred to the material box 53 for release, and tested on the two boxes 53, the flexibility testing mechanism 40 has a swing arm 41, the swing arm 41 can swing back and forth, the end of the swing arm 41 is fixedly connected with a positioning pin 47, the positioning pin 47 cooperates with the shaft hole of the plastic-coated bracket, and the purpose of testing the flexibility of the plastic-coated bracket on the side plate is achieved under the reciprocating swinging motion of the swing arm 41;

[0057] See also Figure 3 , 4 As shown:

[0058] Preferably, the material taking mechanism 20 includes a support 21 and a top plate 22 fixedly connected to the support 21;

[0059] A linear guide rail 23 is fixedly connected to the lower part of the top plate 22, and the linear guide rail 23 is fixedly connected to the vertical plate 232 through a slide seat 231; it also includes a transverse driver fixedly connected to the top plate 22 and a longitudinal driver fixedly connected to the vertical plate 232;

[0060] The transverse driver is connected to the slide 231 and drives the slide 231 to move back and forth transversely. The longitudinal driver suspends the base plate 26 and drives the base plate 26 to move up and down through the longitudinal driver.

[0061] Specifically, the material taking mechanism 20 includes a support 21 and a top plate 22. The lower surface of the top plate 22 is fixedly connected to the table panel 11 through the support 21. The lower surface of the top plate 22 is fixedly connected to a linear guide rail 23. The linear guide rail 23 is slidably connected to a slide seat 231. The slide seat 231 is fixedly connected to a vertical plate 232. The top plate 22 is located at both ends of the linear guide rail 23 and is fixedly connected to a buffer 24 and an adjustment screw 25 for flexible and rigid contact with the slide seat 231. The buffer 24 is a buffer of model ACJ1412 produced by Asia Pacific in the prior art.

[0062] The top plate 22 is fixedly connected to one end of the linear guide rail 23 with a transverse driver, which is a transverse cylinder 27. The vertical plate 232 is fixedly connected to a longitudinal driver, which is a lifting cylinder 28. The piston rod of the transverse cylinder 27 is connected to the slide 231 and drives the slide 231 to move back and forth horizontally.

[0063] The base plate 26 is hoisted on the piston rod of the lifting cylinder 28 , and the base plate 26 is driven to rise and fall by the lifting cylinder 28 .

[0064] See also Figure 5-8 As shown:

[0065] Preferably, the flexibility testing mechanism 40 includes a fixed shaft 42 fixedly connected to the base plate 26 and a driver for driving the swing arm 41 to swing;

[0066] The middle portion of the swing arm 41 is rotatably connected to the fixed shaft 42 , one end of the swing arm 41 is connected to the driver, and the other end is fixedly connected with a positioning pin.

[0067] For details, see Figure 6 As shown, mounting seats are symmetrically arranged on both sides of the base plate 26, and a fixed shaft 42 is fixedly connected through the mounting seats. The middle part of the swing arm 41 is rotatably connected to the fixed shaft 42, and one end of the swing arm 41 is connected to a driver, which is a test cylinder 43. A positioning pin 47 is fixedly connected to the other end of the swing arm 41. The piston rod of the test cylinder 43 is telescopically driven to drive the swing arm 41 to reciprocate around the fixed shaft 42. When in use, the positioning pin 47 is inserted into the shaft hole of the plastic-coated bracket, and the flexibility of the plastic-coated bracket is detected under the drive of the swing arm 41.

[0068] See also Figure 6 , 7 As shown, in order to accurately locate the axial hole of the plastic-coated bracket with the positioning pin 47, the flexibility testing mechanism 40 also includes a lifting block 44 that cooperates with the swing arm 41. A driver is fixedly connected to the upper surface of the base plate 26. The driver is a block cylinder 45. The piston rod of the block cylinder 45 penetrates the base plate 26 and is connected to the block 44. The piston rod of the block cylinder 45 extends to drive the block 44 to press the plastic-coated bracket to ensure that the position of the plastic-coated bracket is fixed. The base plate 26 is located on one side of the block 44 and is fixedly connected with a fixing pin 48. The fixing pin 48 cooperates with the block 44 to further ensure the position stability of the plastic-coated bracket.

[0069] See also Fig. 9 As shown:

[0070] Preferably, the material unloading and flipping mechanism 50 includes a support 51 and a bottom plate 52, the bottom plate 52 is fixedly connected to the table panel 11 through the support 51, one side of the bottom plate 52 is rotatably connected to the material box 53 through a hinge shaft 55, and the other side is fixedly connected to a driver, which is a flip cylinder 54, and the piston rod of the flip cylinder 54 passes through the bottom plate 52 and is connected to a connecting rod 56 through the hinge shaft 55, and the connecting rod 56 is connected to the material box 53 through the hinge shaft. When in use, when the piston rod of the flip cylinder 54 is extended, the hinge shaft 55 at the end of the material box 53 is driven to rotate, so that the material box 53 is tilted toward the side of the unloading tray 60, and the material pieces are dumped into the unloading tray 60 (such as Figure 2 As shown), when the piston rod of the flip cylinder 54 is retracted, the material box 53 is in a horizontal state (as shown Fig. 9As shown), the workpieces fall into the material tray 62 after the material box 53 is turned over, the left workpiece can only be loaded in the left material box, and the right workpiece can only be loaded in the right material box, directly distinguishing the left and right parts.

[0071] See also Figure 5-8 As shown:

[0072] Preferably, the clamp is a clamping cylinder 31, and the piston rods at both ends of the clamping cylinder 31 are fixedly connected with clamping claws 32, and the clamping claws 32 are fixedly connected with clamping blocks 33. The clamping cylinder is located between the two clamping blocks 33 and is fixedly connected with a positioning pin 34 that contacts the side plate, and cooperates with the side plate shaft hole through the positioning pin 34.

[0073] See also Figure 6 As shown preferably, two groups of gripping mechanisms 30 and two groups of flexibility testing mechanisms 40 are symmetrically arranged on the lower surface of the substrate 26, so as to meet the double-station working state of the production line.

[0074] Preferably, the drivers involved in this embodiment are all cylinders produced by AirTac in the prior art, and the cylinders are connected to an external pneumatic system. Of course, the drivers can also be oil cylinders in the prior art.

[0075] See also Figure 2 , 10 、11 as shown:

[0076] The overmolded bracket flexibility testing machine for the automobile side panel assembly production line also includes a material discharge tray 60 for receiving the material discharged from the material box 53;

[0077] The unloading tray 60 includes a tray bracket 61 and a material tray 62. A support shaft 63 is installed on the top of the tray bracket 61. The support shaft 63 is connected to the material tray 62 through a hinge shaft 64. The material tray 62 can be tilted by adjusting the height of the support shaft 63. By tilting the material tray 62, it is convenient to take out items on one side of the material tray 62, which is easy to use.

[0078] See also Fig.12 As shown:

[0079] Preferably, the plastic-coated bracket flexibility testing machine for the automobile side panel assembly production line further includes a welding point inspection mechanism 70, and the base plate 26 is located at the end of the gripping mechanism 30 and is fixedly connected with the welding point inspection mechanism 70;

[0080] The welding spot inspection mechanism 70 includes a hanger 71, and the hanger 71 is fixedly connected with a proximity switch 72 at the corresponding side panel welding spot position. Preferably, the proximity switch 72 is produced by Omron in the prior art, and the model is E2A-M12KN08-WP-C1. The proximity switch 72 is used to check whether the upper side welding spot of the side panel is leaking. The proximity switch 72 is connected to the external electrical control system. When working, the proximity switch 72 light is on, indicating that there is a welding spot, otherwise, it means that there is no welding spot. When the detection fails, the side panel will be placed on the material tray and an alarm will be sounded, but the material tray will not turn over. It is necessary to manually determine the side panel situation before deciding on the next operation;

[0081] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plastic-coated bracket flexibility testing machine for automobile side panel assembly production line, characterized in that: include: Workbench (10); A material taking mechanism (20) is arranged above the workbench (10) and is capable of moving back and forth laterally, and a base plate (26) capable of being raised and lowered is suspended at the bottom of the material taking mechanism (20); and A gripping mechanism (30) and a flexibility testing mechanism (40) mounted on the substrate (26); The gripping mechanism (30) has a clamp, and the clamp can clamp or release the side plate through a clamping block (33); The flexibility testing mechanism (40) has a swing arm (41) capable of reciprocating swing, and a positioning pin that cooperates with the plastic-coated bracket is fixedly connected to the end of the swing arm (41); and A material unloading and flipping mechanism (50) is arranged on one side of the workbench (10), and comprises a material box (53). A hinge axis is arranged on one side of the material box (53), and the material box (53) can flip around the hinge axis relative to the workbench (10) to unload materials.

2. A plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line according to claim 1, It is characterized by: The material taking mechanism (20) comprises a support (21), a top plate (22) fixedly connected to the support (21), a linear guide rail (23) fixedly connected to the lower part of the top plate (22), and the linear guide rail (23) fixedly connected to a vertical plate (232) via a slide seat (231); and further comprises A transverse driver fixedly connected to the top plate (22) and a longitudinal driver fixedly connected to the vertical plate (232); The transverse driver is connected to the slide seat (231) and drives the slide seat (231) to move back and forth transversely. The longitudinal driver suspends the base plate (26) and drives the base plate (26) to move up and down through the longitudinal driver.

3. The flexibility testing machine for the plastic-coated bracket used in the automobile side panel assembly production line according to claim 1, characterized in that ; The flexibility testing mechanism (40) comprises a fixed shaft (42) fixedly connected to the base plate (26) and a driver for driving the swing arm (41) to swing; The middle part of the swing arm (41) is rotatably connected to the fixed shaft (42); one end of the swing arm (41) is connected to the driver, and the other end is fixedly connected to the positioning pin.

4. The flexibility testing machine for the plastic-coated bracket used in the automobile side panel assembly production line according to claim 3, characterized in that ; The flexibility testing mechanism (40) further comprises a lifting and lowering pressing block (44) cooperating with the swing arm (41); a driver is fixedly connected to the upper surface of the base plate (26); and the driver penetrates the base plate (26) and is connected to the pressing block (44).

5. A plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line according to claim 1, It is characterized by: The material unloading and turning mechanism (50) comprises a base plate (52) fixedly connected to the workbench (10); one side of the base plate (52) is rotatably connected to the material box (53) via the hinge shaft, and the other side is fixedly connected to a driver, which passes through the base plate (52) and is connected to the material box (53) away from the hinge shaft end.

6. The flexibility testing machine for the plastic-coated bracket used in the automobile side panel assembly production line according to claim 1, characterized in that ; The clamp is a clamping cylinder (31), piston rods at both ends of the clamping cylinder (31) are fixedly connected with clamping claws (32), the clamping claws (32) are fixedly connected with the clamping blocks (33), and the clamping cylinder (31) is located between the two clamping blocks (33) and is fixedly connected with a positioning pin in contact with the side plate.

7. The flexibility testing machine for the plastic-coated bracket used in the automobile side panel assembly production line according to claim 1, characterized in that ; Two groups of the grasping mechanisms (30) and two groups of flexibility testing mechanisms (40) are symmetrically arranged on the lower surface of the base plate (26).

8. A plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line according to any one of claims 2 to 5, characterized in that ; The driver is a cylinder.

9. A plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line according to any one of claims 1 to 7, characterized in that ; It also includes a material discharge tray (60) for receiving material pieces discharged from the material box (53); The unloading tray (60) comprises a tray support (61) and a material tray (62) installed on the top of the tray support (61) and arranged obliquely.

10. A plastic-coated bracket flexibility testing machine for an automobile side panel assembly production line according to any one of claims 1 to 7, characterized in that ; It also comprises a welding point inspection mechanism (70), wherein the base plate (26) is fixedly connected to the welding point inspection mechanism (70) at the end of the grasping mechanism (30), and the welding point inspection mechanism (70) is fixedly connected to the positions of the welding points of the side plates.