Test fixture for mini adapter plate

Abstract

The utility model discloses a mini adapter plate test fixture, which relates to the technical field of mini adapter plate test, and comprises a conveying device, one end of the conveying device is provided with a linear module, and the linear module is fixedly connected with a plug-in assembly; a workbench for placing the adapter plate is arranged below one end, far away from the conveying device, of the linear module, and the workbench is positioned below the inserting assembly; the linear module can drive the whole inserting assembly to move, after the linear module drives the two adsorption bins to move to the position over a small plate on the conveying belt, the air cylinder drives the two adsorption bins to descend and get close to the small plate, and at the moment, suction force generated by negative pressure in the adsorption bins can adsorb the small plate to the outer walls of the adsorption bins; and then the linear module drives the adsorption bin to move towards the direction of the workbench, so that the adsorption bin can transfer the small plate, and the small plate is always obliquely arranged at 45 degrees, so that the small plate can be conveniently and smoothly inserted into the adapter plate.

Description

Technical Field

[0001] This utility model relates to the field of mini adapter board testing technology, specifically a mini adapter board testing fixture. Background Technology

[0002] Mini LED technology is a new type of backlighting technology that uses smaller LEDs as backlight sources. Unlike traditional LCD TV technology, Mini LED TVs have smaller and denser backlight units, providing higher brightness and more uniform backlighting. By definition, Mini LED technology uses smaller light-emitting chips, typically less than 0.2 millimeters in diameter. These tiny light-emitting chips can form more backlight zones, enabling precise control of light and achieving higher brightness and more uniform backlighting. When the image needs to display black, Mini LED technology can precisely turn off the backlight of a zone, achieving a deeper black.

[0003] As the number of mini light board sections increases, the number of light strips used in the backlight module also increases, resulting in more connecting wires to the light strips. To save on wiring, an adapter board is designed inside the backlight cavity to save on wiring and assembly. During the manufacturing process of the adapter board, it is necessary to check whether there are open or short circuits in the circuit of the adapter board, and whether there are poor solder joints or solder bridging at the terminals. Therefore, each interface needs to be tested, and each mini board needs to be manually plugged into the adapter board one by one, which requires a lot of manpower for testing.

[0004] Currently, the testing of adapter boards is generally done manually. This involves workers manually inserting the small boards one by one into the connectors of the adapter board, pressing the small boards flat, and then testing the connector board. However, the technology for producing adapter boards and small boards is already very mature, with a large daily output. Manually testing adapter boards is inefficient and cannot meet the needs of mass production of adapter boards and small boards, while also increasing labor costs. Utility Model Content

[0005] The purpose of this utility model is to provide a mini adapter board test fixture, which uses a conveying device to transport the small board at a 45° angle to the plug-in component. Then, the plug-in component uses negative pressure to adsorb the small board and transfer it to the adapter board, and then inserts the small board into the adapter board. The whole process is automated and does not require manual operation by the staff, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mini adapter board test fixture includes a conveying device, one end of which is provided with a linear module, which is fixedly connected to a plug-in assembly; a workbench for placing the adapter board is provided below the end of the linear module away from the conveying device, and the workbench is located below the plug-in assembly.

[0008] The plug-in assembly includes an outer frame, on the inner side of which two adsorption components are rotatably connected, and both adsorption components are inclined at a 45° angle to the outer frame; the top center of the outer frame is fixedly connected to the telescopic rod of the cylinder, and guide rods are fixedly connected to both ends of the top of the outer frame; a drive assembly is provided at the upper inner side of the outer frame, which is connected to the two adsorption components; the top of the cylinder is fixedly connected to the slide of the linear module, and both guide rods are slidably connected to the slide of the linear module.

[0009] The adsorption assembly includes a rotating plate, one end of which is rotatably connected to the lower end of the outer frame via a connecting shaft; an adsorption chamber is provided at the end of the rotating plate away from the connecting shaft, and multiple through holes are evenly provided on the side of the adsorption chamber away from the rotating plate; connecting chambers are fixedly connected to both ends of the side of the rotating plate away from the adsorption chamber, and both connecting chambers are in communication with the adsorption chamber; connecting pipes are fixedly connected to the side of the two connecting chambers away from the rotating plate, and the ends of the multiple connecting pipes away from the connecting chambers are all connected to a negative pressure pump.

[0010] As a further technical solution of this utility model, both sides of the multiple rotating plates are fixedly connected to L-shaped plates by bolts, and the side of the L-shaped plate away from the rotating plate is fixedly connected to the adsorption chamber by bolts; the two rotating plates are respectively rotatably connected to arc-shaped toothed ring one and arc-shaped toothed ring two by multiple connecting seats on the side of the two rotating plates close to the drive component, wherein the inner arc surface of arc-shaped toothed ring one is provided with tooth grooves and the outer arc surface of arc-shaped toothed ring two is provided with tooth grooves.

[0011] As a further technical solution of this utility model, both the first and second arc-shaped toothed rings are provided with arc-shaped through grooves in the middle, and multiple support rods are slidably connected in the arc-shaped through grooves of both the first and second arc-shaped toothed rings, with both ends of the multiple support rods fixedly connected to the outer frame.

[0012] As a further technical solution of this utility model, the drive assembly includes a second motor, the output shaft of which is fixedly connected to the input end of a second reducer, the output end of which is fixedly connected to a transmission shaft, and the end of the transmission shaft away from the second reducer is fixedly connected to a gear; the gear is located between an arc-shaped gear ring one and an arc-shaped gear ring two and meshes with the arc-shaped gear ring one and the arc-shaped gear ring two; the middle section of the transmission shaft is rotatably connected to a cross seat, and both ends of the cross seat are fixedly connected to the outer frame.

[0013] As a further technical solution of this utility model, the conveying device includes a conveyor belt, with drive rollers connected to the inner sides of both ends of the conveyor belt. Both ends of the two drive rollers are rotatably connected to bearings with seats, and multiple bearings with seats are fixedly connected to the tops of two support platforms respectively. The end of one of the drive rollers is fixedly connected to the output end of a reducer, the input end of the reducer is fixedly connected to the output shaft of a motor, and the bottom of the reducer is fixedly connected to the support platform. Multiple limiting components are provided on the inner side of the middle section of the conveyor belt.

[0014] As a further technical solution of this utility model, the limiting component includes a bottom roller, with side rollers provided above both ends of the bottom roller, and both side rollers are inclined at a 45° angle; both side rollers and the bottom roller are rotatably connected to the support frame.

[0015] As a further technical solution of this utility model, the bottom of the support frame is fixedly connected to the top of the base frame, and the bottom of both ends of the base frame are fixedly connected to the uprights; an auxiliary roller is provided below the base frame, and the two ends of the auxiliary roller are rotatably connected to the two uprights respectively; the conveyor belt is located between the auxiliary roller and the base frame, and the bottom of the conveyor belt is in contact with the top of the auxiliary roller.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this invention, the bottom roller and the side rollers at both ends change the shape of the conveyor belt, making it V-shaped, so that the small plates on the conveyor belt are tilted at a 45° angle; multiple auxiliary rollers support the conveyor belt, preventing deformation at the bottom of the conveyor belt, thus ensuring that the tension of the conveyor belt remains stable, and allowing the multiple side rollers to change the shape of the conveyor belt normally.

[0018] In this invention, the linear module can drive the entire insertion assembly to move. After the linear module moves the two adsorption chambers to directly above the small plate on the conveyor belt, the cylinder drives the two adsorption chambers to descend and approach the small plate. At this time, the suction force generated by the negative pressure in the adsorption chamber can adsorb the small plate onto the outer wall of the adsorption chamber. Then, the linear module drives the adsorption chamber to move towards the worktable, so that the adsorption chamber can transfer the small plate and keep the small plate at a 45° angle, so that the small plate can be smoothly inserted into the adapter plate.

[0019] In this invention, after the small plate approaches the adapter plate on the worktable, the cylinder drives the two adsorption chambers to descend until the small plate adsorbed by the adsorption chambers is inserted into the socket of the adapter plate at a 45° angle. Then, the second motor, in conjunction with the second reducer, drives the gear to rotate counterclockwise. The gear drives the arc-shaped gear rings one and two that mesh with it to move in opposite directions, thereby driving the two adsorption chambers to rotate until the two adsorption chambers are in a horizontal state. When the adsorption chambers rotate, they can press down on the small plate they adsorb, thus making the small plate also horizontal, which facilitates the normal operation of subsequent testing. Multiple support rods support the arc-shaped gear rings one and two, stabilizing their movement trajectory while ensuring that the arc-shaped gear rings one and two can move normally, thereby allowing the two adsorption chambers to rotate normally. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This utility model Figure 1 Side view.

[0022] Figure 3 This is a three-dimensional structural diagram of the conveying device of this utility model.

[0023] Figure 4 This utility model Figure 3 Top view.

[0024] Figure 5 This utility model Figure 4 AA sectional view.

[0025] Figure 6 This utility model Figure 1 A partial structural diagram.

[0026] Figure 7 This utility model Figure 2 A partial structural diagram.

[0027] Figure 8 This utility model Figure 7 Top view.

[0028] Figure 9 This utility model Figure 8 AA sectional view.

[0029] Figure 10 This utility model Figure 7 A partial structural diagram.

[0030] Figure 11 This utility model Figure 10 Another perspective view.

[0031] Figure 12 This utility model Figure 10 The main view.

[0032] In the diagram: 1-Conveying device, 2-Linear module, 3-Bracket, 4-Plug-in assembly, 5-Workbench, 6-Adapter plate;

[0033] 11-Conveyor belt, 12-Limiting assembly, 13-Drive roller, 14-Bearing with seat, 15-Motor 1, 16-Reducer 1, 17-Support platform, 41-Cylinder, 42-Guide rod, 43-Outer frame, 44-Adsorption assembly, 45-Drive assembly;

[0034] 121-Bottom roller, 122-Side roller, 123-Support frame, 124-Base frame, 125-Upright frame, 126-Auxiliary roller, 441-Rotating plate, 442-Adsorption chamber, 443-Connecting chamber, 444-Connecting pipe, 445-Arc-shaped gear ring one, 446-Connecting seat, 447-Arc-shaped gear ring two, 448-Support rod, 449-Connecting shaft, 440-L-shaped plate, 451-Motor two, 452-Reducer two, 453-Horizontal seat, 454-Drive shaft, 455-Gear. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-12 In this embodiment of the present invention, a mini adapter board test fixture includes a conveying device 1, one end of which is provided with a linear module 2, which is fixedly connected to a plug-in component 4; a workbench 5 for placing an adapter board 6 is provided below the end of the linear module 2 away from the conveying device 1, and the workbench 5 is located below the plug-in component 4.

[0037] The plug-in assembly 4 includes an outer frame 43, on which two adsorption assemblies 44 are rotatably connected, and both adsorption assemblies 44 are inclined at a 45° angle to the outer frame 43; the top middle of the outer frame 43 is fixedly connected to the telescopic rod of the cylinder 41, and both ends of the top of the outer frame 43 are fixedly connected to guide rods 42; a drive assembly 45 is provided at the upper inner side of the outer frame 43, which is connected to the two adsorption assemblies 44 in a transmission manner; the top of the cylinder 41 is fixedly connected to the slide of the linear module 2, and both guide rods 42 are slidably connected to the slide of the linear module 2;

[0038] The adsorption assembly 44 includes a rotating plate 441, one end of which is rotatably connected to the lower end of the outer frame 43 via a connecting shaft 449; an adsorption chamber 442 is provided at the end of the rotating plate 441 away from the connecting shaft 449, and a plurality of through holes are evenly provided on the side of the adsorption chamber 442 away from the rotating plate 441; a connecting chamber 443 is fixedly connected to both ends of the side of the rotating plate 441 away from the adsorption chamber 442, and both connecting chambers 443 are in communication with the adsorption chamber 442; a connecting pipe 444 is fixedly connected to the side of the two connecting chambers 443 away from the rotating plate 441, and the ends of the plurality of connecting pipes 444 away from the connecting chambers 443 are all connected to a negative pressure pump.

[0039] By adopting the above technical solution, after the small plate approaches the adapter plate on the workbench 5, the cylinder 41 drives the two adsorption chambers 442 to descend until the small plate adsorbed by the adsorption chambers 442 is inserted into the socket of the adapter plate at a 45° angle. Then, the motor 451, in conjunction with the reducer 452, drives the gear 455 to rotate counterclockwise. The gear 455 can drive the arc-shaped gear ring 445 and the arc-shaped gear ring 447 meshing with it to move in opposite directions, thereby driving the two adsorption chambers 442 to rotate until the two adsorption chambers 442 rotate. The two adsorption chambers 442 are horizontally aligned. When the adsorption chamber 442 rotates, it can press down on the small plate it adsorbs, thus making the small plate horizontal as well, which facilitates the normal operation of subsequent testing. Multiple support rods 448 support the first arc-shaped toothed ring 445 and the second arc-shaped toothed ring 447, stabilizing their movement trajectory while ensuring that the first arc-shaped toothed ring 445 and the second arc-shaped toothed ring 447 can move normally, thereby allowing the two adsorption chambers 442 to rotate normally.

[0040] In this embodiment, L-shaped plates 440 are fixedly connected to both sides of the plurality of rotating plates 441 by bolts. The side of the L-shaped plate 440 away from the rotating plates 441 is fixedly connected to the adsorption chamber 442 by bolts. The side of the two rotating plates 441 near the drive assembly 45 is respectively rotatably connected to an arc-shaped toothed ring 1 445 and an arc-shaped toothed ring 2 447 by a plurality of connecting seats 446. The inner arc surface of the arc-shaped toothed ring 1 445 is provided with a tooth groove, and the outer arc surface of the arc-shaped toothed ring 2 447 is provided with a tooth groove.

[0041] Both the first arc-shaped gear ring 445 and the second arc-shaped gear ring 447 are provided with arc-shaped through grooves in the middle, and multiple support rods 448 are slidably connected in the arc-shaped through grooves of both the first arc-shaped gear ring 445 and the second arc-shaped gear ring 447. Both ends of the multiple support rods 448 are fixedly connected to the outer frame 43.

[0042] The drive assembly 45 includes a second motor 451, the output shaft of which is fixedly connected to the input end of a reducer 452, the output end of which is fixedly connected to a transmission shaft 454, and the end of the transmission shaft 454 away from the reducer 452 is fixedly connected to a gear 455; the gear 455 is located between an arc-shaped gear ring 445 and an arc-shaped gear ring 447 and meshes with both arc-shaped gear rings 445 and 447; the middle section of the transmission shaft 454 is rotatably connected to a cross seat 453, and both ends of the cross seat 453 are fixedly connected to an outer frame 43.

[0043] By adopting the above technical solution, the linear module 2 can drive the plug-in assembly 4 to move as a whole. After the linear module 2 drives the two adsorption chambers 442 to move directly above the small plate on the conveyor belt 11, the cylinder 41 drives the two adsorption chambers 442 to descend and approach the small plate. At this time, the suction force generated by the negative pressure in the adsorption chamber 442 can adsorb the small plate onto the outer wall of the adsorption chamber 442. Then the linear module 2 drives the adsorption chamber 442 to move towards the worktable 5, so that the adsorption chamber 442 can transfer the small plate and keep the small plate at a 45° angle, so that the small plate can be smoothly inserted into the adapter plate.

[0044] In this embodiment, the conveying device 1 includes a conveyor belt 11, with drive rollers 13 connected to the inner sides of both ends of the conveyor belt 11. Both ends of the two drive rollers 13 are rotatably connected to bearings 14. Multiple bearings 14 are fixedly connected to the tops of two support platforms 17 respectively. One end of one drive roller 13 is fixedly connected to the output end of a reducer 16. The input end of the reducer 16 is fixedly connected to the output shaft of a motor 15. The bottom of the reducer 16 is fixedly connected to the support platform 17. Multiple limiting components 12 are provided on the inner side of the middle section of the conveyor belt 11.

[0045] The limiting component 12 includes a bottom roller 121, with side rollers 122 above both ends of the bottom roller 121, and both side rollers 122 are inclined at a 45° angle; both side rollers 122 and the bottom roller 121 are rotatably connected to the support frame 123.

[0046] The bottom of the support frame 123 is fixedly connected to the top of the base frame 124, and the bottom of both ends of the base frame 124 are fixedly connected to the uprights 125. An auxiliary roller 126 is provided below the base frame 124, and the two ends of the auxiliary roller 126 are rotatably connected to the two uprights 125 respectively. The conveyor belt 11 is located between the auxiliary roller 126 and the base frame 124, and the bottom of the conveyor belt 11 is in contact with the top of the auxiliary roller 126.

[0047] By adopting the above technical solution, the bottom roller 121 and the side rollers 122 at both ends play the role of changing the conveyor belt 11, making the conveyor belt 11 into a V shape, so that the small plate on the conveyor belt 11 is tilted at a 45° angle; the multiple auxiliary rollers 126 play the role of supporting the conveyor belt 11, preventing the bottom of the conveyor belt 11 from deforming, thereby ensuring that the tension of the conveyor belt 11 remains stable, and thus allowing the multiple side rollers 122 to change the shape of the conveyor belt 11 normally.

[0048] The working principle of this utility model is as follows: After the small plate approaches the adapter plate on the workbench 5, the cylinder 41 drives the two adsorption chambers 442 to descend until the small plate adsorbed by the adsorption chambers 442 is inserted into the socket of the adapter plate at a 45° angle. Then, the motor 451, in conjunction with the reducer 452, drives the gear 455 to rotate counterclockwise. The gear 455 can drive the arc-shaped gear ring 445 and the arc-shaped gear ring 447 meshing with it to move in opposite directions, thereby driving the two adsorption chambers 442 to rotate until the two adsorption chambers 442 rotate. The two adsorption chambers 442 are horizontally aligned. When the adsorption chamber 442 rotates, it can press down the small plate it adsorbs, thus making the small plate horizontal as well, which facilitates the normal operation of subsequent testing. Multiple support rods 448 support the first arc-shaped toothed ring 445 and the second arc-shaped toothed ring 447, stabilizing the movement trajectory of the first arc-shaped toothed ring 445 and the second arc-shaped toothed ring 447 while ensuring that they can move normally, so that the two adsorption chambers 442 can rotate normally.

[0049] The linear module 2 can drive the entire insertion assembly 4 to move. After the linear module 2 moves the two adsorption chambers 442 to directly above the small plate on the conveyor belt 11, the cylinder 41 drives the two adsorption chambers 442 to descend and approach the small plate. At this time, the suction force generated by the negative pressure in the adsorption chamber 442 can adsorb the small plate onto the outer wall of the adsorption chamber 442. Then the linear module 2 drives the adsorption chamber 442 to move towards the worktable 5, so that the adsorption chamber 442 can transfer the small plate and keep the small plate at a 45° angle, so that the small plate can be smoothly inserted into the adapter plate.

[0050] The bottom roller 121 and the side rollers 122 at both ends change the conveyor belt 11, making the conveyor belt 11 into a V-shape, so that the small plates on the conveyor belt 11 are tilted at a 45° angle; the multiple auxiliary rollers 126 support the conveyor belt 11, prevent the bottom of the conveyor belt 11 from deforming, thereby ensuring that the tension of the conveyor belt 11 remains stable, and thus allowing the multiple side rollers 122 to change the shape of the conveyor belt 11 normally.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mini adapter board test fixture, characterized in that: It includes a conveying device (1), one end of which is provided with a linear module (2), which is fixedly connected to the plug-in assembly (4); a workbench (5) for placing the adapter plate (6) is provided below the end of the linear module (2) away from the conveying device (1), and the workbench (5) is located below the plug-in assembly (4); The plug-in assembly (4) includes an outer frame (43), on which two adsorption assemblies (44) are rotatably connected, and both adsorption assemblies (44) are inclined at a 45° angle to the outer frame (43); the top middle of the outer frame (43) is fixedly connected to the telescopic rod of the cylinder (41), and both ends of the top of the outer frame (43) are fixedly connected to guide rods (42); a drive assembly (45) is provided on the upper inner side of the outer frame (43), and the drive assembly (45) is connected to the two adsorption assemblies (44) in a transmission connection; the top of the cylinder (41) is fixedly connected to the slide of the linear module (2), and both guide rods (42) are slidably connected to the slide of the linear module (2); The adsorption assembly (44) includes a rotating plate (441), one end of which is rotatably connected to the lower end of the outer frame (43) via a connecting shaft (449); an adsorption chamber (442) is provided at the end of the rotating plate (441) away from the connecting shaft (449), and multiple through holes are uniformly provided on the side of the adsorption chamber (442) away from the rotating plate (441); both ends of the side of the rotating plate (441) away from the adsorption chamber (442) are fixedly connected to connecting chambers (443), and both connecting chambers (443) are connected to the adsorption chamber (442); both sides of the two connecting chambers (443) away from the rotating plate (441) are fixedly connected to connecting pipes (444), and the ends of the multiple connecting pipes (444) away from the connecting chambers (443) are connected to a negative pressure pump.

2. The mini adapter board test fixture according to claim 1, characterized in that: Both sides of the multiple rotating plates (441) are fixedly connected to L-shaped plates (440) by bolts. The side of the L-shaped plate (440) away from the rotating plate (441) is fixedly connected to the adsorption chamber (442) by bolts. The two rotating plates (441) are respectively rotatably connected to the side of the drive assembly (45) by multiple connecting seats (446) with arc-shaped toothed ring one (445) and arc-shaped toothed ring two (447), wherein the inner arc surface of arc-shaped toothed ring one (445) is provided with tooth grooves and the outer arc surface of arc-shaped toothed ring two (447) is provided with tooth grooves.

3. The mini adapter board test fixture according to claim 2, characterized in that: Both the first arc-shaped toothed ring (445) and the second arc-shaped toothed ring (447) are provided with arc-shaped through grooves in the middle, and multiple support rods (448) are slidably connected in the arc-shaped through grooves of the first arc-shaped toothed ring (445) and the second arc-shaped toothed ring (447). Both ends of the multiple support rods (448) are fixedly connected to the outer frame (43).

4. The mini adapter board test fixture according to claim 1, characterized in that: The drive assembly (45) includes a second motor (451), the output shaft of which is fixedly connected to the input end of a second reducer (452), the output end of which is fixedly connected to a transmission shaft (454), and the end of the transmission shaft (454) away from the second reducer (452) is fixedly connected to a gear (455); the gear (455) is located between an arc-shaped gear ring (445) and an arc-shaped gear ring (447) and meshes with the arc-shaped gear ring (445) and the arc-shaped gear ring (447); the middle section of the transmission shaft (454) is rotatably connected to a cross seat (453), and both ends of the cross seat (453) are fixedly connected to the outer frame (43).

5. The mini adapter board test fixture according to claim 4, characterized in that: The conveying device (1) includes a conveyor belt (11), with drive rollers (13) connected to the inner sides of both ends of the conveyor belt (11). Both ends of the two drive rollers (13) are rotatably connected to bearings (14). Multiple bearings (14) are fixedly connected to the top of two support platforms (17). The end of one of the drive rollers (13) is fixedly connected to the output end of a reducer (16). The input end of the reducer (16) is fixedly connected to the output shaft of a motor (15). The bottom of the reducer (16) is fixedly connected to the support platform (17). Multiple limiting components (12) are provided on the inner side of the middle section of the conveyor belt (11).

6. The mini adapter board test fixture according to claim 5, characterized in that: The limiting component (12) includes a bottom roller (121), with side rollers (122) above both ends of the bottom roller (121), and both side rollers (122) are inclined at a 45° angle; both side rollers (122) and the bottom roller (121) are rotatably connected to the support frame (123).

7. The mini adapter board test fixture according to claim 6, characterized in that: The bottom of the support frame (123) is fixedly connected to the top of the base frame (124), and the bottom of both ends of the base frame (124) are fixedly connected to the uprights (125); an auxiliary roller (126) is provided below the base frame (124), and the two ends of the auxiliary roller (126) are rotatably connected to the two uprights (125) respectively; the conveyor belt (11) is located between the auxiliary roller (126) and the base frame (124), and the bottom of the conveyor belt (11) is in contact with the top of the auxiliary roller (126).

Images