A detection delivery device

Abstract

The utility model relates to a kind of conveying devices for detection, comprising: conveying component, including drive shaft, first driving wheel, first conveyor belt and two movable parts, the movable part is rotatably connected with first synchronous wheel, the first driving wheel is sleeved on the drive shaft, the first conveyor belt cooperation is wound on the first synchronous wheel and the first driving wheel;First driving element, the output end of the first driving element is connected with the end part of the drive shaft;Adjusting component, including second driving element, transmission part and adjusting element, two the adjusting element is connected with the transmission part, the output end of the second driving element is connected with the end part of the transmission part, two the adjusting element is connected with two the movable part respectively, two the adjusting element can be moved to the direction of mutual approach or mutual away from each other.The utility model relates to a kind of conveying devices for detection, can improve the detection efficiency of battery piece.

Description

Technical Field

[0001] This utility model relates to the field of conveying device technology, and in particular to a conveying device for testing. Background Technology

[0002] Photovoltaic cells are semiconductor material modules that convert sunlight into electrical energy and are key components of solar photovoltaic power generation systems. During the production process, a full-sized photovoltaic cell needs to be cut into two halves. After cutting, the two halves need to be inspected for appearance and the cut position, ensuring that the cut position of each half is suspended in the air during inspection. Because photovoltaic cells come in various sizes, only one half can be transported to the inspection position for inspection at a time, resulting in low inspection efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a conveying device for testing, which can improve the testing efficiency of battery cells.

[0004] To solve the above-mentioned technical problems, this utility model provides a conveying device for testing, comprising: a conveying assembly including a drive shaft, a first drive wheel, a first conveyor belt, and two movable parts, wherein the movable parts are rotatably connected to a first synchronous wheel, the first drive wheel is sleeved on the drive shaft, and the first conveyor belt is wound around the first synchronous wheel and the first drive wheel; a first drive member, the output end of which is connected to the end of the drive shaft; and an adjusting assembly including a second drive member, a transmission member, and adjusting members, wherein the two adjusting members are connected to the transmission member, the output end of the second drive member is connected to the end of the transmission member, and the two adjusting members are respectively connected to the two movable parts, and the two adjusting members can move in directions toward each other or toward each other.

[0005] In one embodiment of the present invention, a support frame is further included, the support frame including a first support plate, the movable member being slidably connected to the first support plate, and the sliding path of the movable plate being parallel to the moving path of the adjusting member.

[0006] In one embodiment of the present invention, the support frame further includes a second support plate, which is located between the two movable members. The second support plate is connected to the first support plate, and at least two second synchronous pulleys are rotatably connected to the second support plate. The first conveyor belt is also wound around the second synchronous pulleys, and the central axes of the at least two second synchronous pulleys and the two first synchronous pulleys are located in the same plane.

[0007] In one embodiment of the present invention, the movable component is rotatably connected to a first tensioning wheel, the second support plate is rotatably connected to a second tensioning wheel, the first tensioning wheel is located between the two second tensioning wheels, and the first conveyor belt is also wound around the first tensioning wheel and the second tensioning wheel.

[0008] In one embodiment of the present invention, the first support plate is connected to a slide rail, the movable member is slidably connected to the slide rail, and a stop block is also connected to the first support plate, the stop block being located at the end of the slide rail.

[0009] In one embodiment of the present invention, the first support plate is connected to at least two slide rails, and a clearance hole is provided on the first support plate at a position corresponding to the position between the two slide rails. The clearance hole extends along the moving path of the movable member, and a protrusion is provided on one side of the adjusting member. The protrusion passes through the clearance hole and is connected to the movable member.

[0010] In one embodiment of the present invention, a support assembly is further included. The support assembly includes a connecting seat, a first support shaft, and a third tensioning wheel. The connecting seat is provided with an adjustment groove, and a first adjustment hole is provided on one side of the adjustment groove. The first support shaft is movable along the adjustment groove and is connected to the first adjustment hole. The third tensioning wheel is rotatably sleeved on the first support shaft, and the first conveyor belt is also wound around the third tensioning wheel.

[0011] In one embodiment of this utility model, the conveying assembly further includes a second conveyor belt, a support block, a second support shaft, a third synchronous pulley, a fourth synchronous pulley, and a second drive wheel. Of the two movable parts, one of the movable parts is connected to the support block, the third synchronous pulley is rotatably connected to the support block, the fourth synchronous pulley is rotatably sleeved on the second support shaft, the central axes of the third synchronous pulley, the fourth synchronous pulley, and the first synchronous pulley are located in the same plane, the second drive wheel is sleeved on the drive shaft, and the second conveyor belt is wound around the third synchronous pulley, the fourth synchronous pulley, and the second drive wheel.

[0012] In one embodiment of the present invention, the conveying assembly further includes a third support shaft and a fourth tensioning wheel, the fourth tensioning wheel being rotatably sleeved on the third support shaft, and the second conveyor belt being wound around the fourth tensioning wheel.

[0013] In one embodiment of the present invention, a connecting frame is further included. The connecting frame includes a connecting plate with two openings. Two movable members pass through the two openings respectively. Each movable member is provided with a first clearance groove, and the edge of the opening can be located within the first clearance groove.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0015] The present invention discloses a conveying device for testing. Through the connection between an adjusting component and a movable component, a second driving component, via a transmission component, can drive two movable components to move towards or away from each other, thereby adjusting the distance between the two movable components. This allows for the simultaneous testing of two half-cell batteries, and enables the testing of half-cell batteries of different sizes, improving testing efficiency. The installation space accommodates the testing component for the half-cell battery and a light source, allowing for multi-angle testing of the appearance and cutting position of the half-cell battery in conjunction with the testing component outside the installation space. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a detection conveying device of this utility model during operation;

[0018] Figure 2 This is a schematic diagram of the conveying device used for testing;

[0019] Figure 3 yes Figure 2 Partial structural diagram;

[0020] Figure 4 This is a schematic diagram of the cooperation structure between the adjustment component and the moving part.

[0021] Explanation of reference numerals in the accompanying drawings: 1. Conveying assembly; 2. Support assembly; 3. Connecting frame; 4. Support frame; 5. Carrying tray; 6. First driving component; 7. Half-cell battery cell; 8. Adjusting assembly; 11. Second conveyor belt; 12. Second support shaft; 13. Third support shaft; 14. Drive shaft; 15. First conveyor belt; 16. Moving part; 21. Fixed plate; 22. Connecting seat; 23. Third tensioning wheel; 24. First support shaft; 25. Adjusting groove; 31. Connecting plate; 32. Support column; 41. Third support plate; 42. 43. First support plate; 44. Second support plate; 45. Second synchronous pulley; 46. Second tension pulley; 47. Second clearance groove; 88. Transmission component; 89. Adjustment component; 80. Second drive component; 81. Slide rail; 82. Stop block; 83. Support base; 14. Fourth synchronous pulley; 15. Fourth tension pulley; 16. First drive wheel; 17. Second drive wheel; 18. Support block; 19. Third synchronous pulley; 10. First synchronous pulley; 11. First tension pulley; 12. First clearance groove; 13. Detection hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0023] Reference Figures 1 to 4 As shown, a conveying device for testing according to this utility model includes: a conveying assembly 1, including a drive shaft 14, a first drive wheel 141, a first conveyor belt 15, and two movable parts 16. The movable parts 16 are rotatably connected to a first synchronous wheel 163. The first drive wheel 141 is sleeved on the drive shaft 14, and the first conveyor belt 15 is wound around the first synchronous wheel 163 and the first drive wheel 141; a first drive member 6, the output end of which is connected to the end of the drive shaft 14; and an adjusting assembly 8, including a second drive member 83, a transmission member 81, and adjusting members 82. The two adjusting members 82 are connected to the transmission member 81, the output end of the second drive member 83 is connected to the end of the transmission member 81, and the two adjusting members 82 are respectively connected to the two movable parts 16. The two adjusting members 82 can move in directions that are closer to or further away from each other.

[0024] In this embodiment, a conveying device for testing utilizes a first conveyor belt 15 to move two half-cells 7 during testing until their positions correspond to two movable members 16, and the cutting positions of the two half-cells 7 correspond to the positions between the two movable members 16. This allows for simultaneous testing of both half-cells 7. When testing half-cells 7 of different sizes, a second driving member 83 drives an adjusting member 82 via a transmission member 81, thereby moving the movable members 16 to match the distance between them to the size of the half-cells 7. The connection between the adjusting member 82 and the movable members 16 allows the second driving member 83 to move the two movable members 16 towards or away from each other via the transmission member 81, adjusting the distance between them. This enables simultaneous testing of both half-cells 7 and allows for testing of half-cells 7 of different sizes, improving testing efficiency.

[0025] The testing conveying device also includes a support component 2, which includes a base for supporting the conveying component 1, the first drive component 6, and the adjustment component 8.

[0026] Reference Figure 3As shown, the conveying assembly 1 includes a drive shaft 14, a first drive wheel 141, a first conveyor belt 15, and two movable parts 16. Specifically, the conveying device for testing also includes a support frame 4, which includes a third support plate 41. The plane of the third support plate 41 is perpendicular to the top side of the base, and the two third support plates 41 are connected to the top side of the base. The drive shaft 14 is located between the two third support plates 41, and both ends of the drive shaft 14 are rotatably connected to the two third support plates 41 respectively. The first drive wheel 141 is sleeved on the drive shaft 14 and connected to the drive shaft 14, and the first drive wheel 141 can rotate with the drive shaft 14. The opposite sidewalls of the tops of the two movable parts 16, which are away from each other, are rotatably connected to first synchronous pulleys 163. The first conveyor belt 15 is wound around the first synchronous pulley 163 and the first drive wheel 141. The top side of the first conveyor belt 15 is the conveying side, which is used to carry and convey the battery cells.

[0027] The support frame 4 also includes a first support plate 42 and a second support plate 43. The plane of the second support plate 43 is perpendicular to the plane of the third support plate 41. The vertical cross-section of the third support plate 41 is L-shaped, and the first support plate 42 is connected to the third support plate 41. Both second support plates 43 and both third support plates 41 are connected to the first support plate 42, wherein the third support plate 41 is connected to the bottom side of the first support plate 42, and the second support plate 43 is connected to the top side of the first support plate 42. The second support plate 43 is provided with a second clearance groove 46 extending in a direction perpendicular to the first support plate 42. The second clearance groove 46 penetrates the second support plate 43 and extends to the top side of the second support plate 43. The second clearance groove 46 corresponds to the middle position between the two movable parts 16. At least two second synchronous pulleys 44 are rotatably connected to the second support plate 43. The second synchronous pulleys 44 are located on the side of the two second support plates 43 that are furthest apart from each other. The diameter of the second synchronous pulleys 44 is the same as that of the first synchronous pulleys 163. In this embodiment, the second support plate 43 is rotatably connected to two second synchronous pulleys 44. Two second synchronous pulleys 44 are located on both sides of the second clearance groove 46, and the central axis of the second synchronous pulleys 44 and the first synchronous pulley 163 is located in the same plane, which is parallel to the plane where the first support plate 42 is located. The first conveyor belt 15 is also wound around the second synchronous pulleys 44, so that the conveying side of the first conveyor belt 15 remains horizontal.

[0028] The movable component 16 is also rotatably connected to a first tensioning pulley 164, the diameter of which is larger than the diameter of the first synchronizing pulley 163. Four first tensioning pulleys 164 are respectively connected to the two sides of the closest end of the two movable components 16, and the distance from the first tensioning pulley 164 to the first support plate 42 is less than the distance from the first synchronizing pulley 163 to the first support plate 42, meaning the height of the first tensioning pulley 164 is lower than the height of the first synchronizing pulley 163. The second support plate 43 is also rotatably connected to a second tensioning pulley 45, which is connected to the second synchronizing pulley 44 on the same side of the second support plate 43. The second tensioning pulley 45 is connected to the bottom of the side wall of the second support plate 43, and the distance from the second tensioning pulley 45 to the first support plate 42 is less than the distance from the first tensioning pulley 164 to the first support plate 42, meaning the height of the second tensioning pulley 45 is lower than the height of the first tensioning pulley 164. The first tensioning roller 164 is located between the two second tensioning rollers 45, and the first tensioning roller 164 corresponds to the position of the second clearance groove 46 in the vertical direction of the first support plate 42. The first conveyor belt 15 is also wound around the first tensioning roller 164 and the second tensioning roller 45. Specifically, the first conveyor belt 15 is in contact with the position opposite to the two first tensioning rollers 164, and the first conveyor belt 15 is in contact with the position away from the second clearance groove 46 of the second tensioning roller 45, so that the first conveyor belt 15 between the two second synchronous rollers 44 extends along the edge of the second clearance groove 46 and forms a U-shape, so that the space formed by the second clearance groove 46 of the second support plate 43, the two second support plates 43 and the two moving parts 16 constitutes an installation space. The installation space can accommodate the detection component for detecting half of the battery cell 7 and the light source, so that the appearance and cutting position of the half of the battery cell 7 can be detected from multiple angles in conjunction with the detection component outside the installation space.

[0029] The first driving component 6 is a rotary driving component. The output end of the first driving component 6 is connected to one end of the drive shaft 14, thereby enabling the first driving component 6 to drive the drive shaft 14 to move, and in turn, drive the first conveyor belt 15 to move. The first driving component 6 is connected to the base through a mounting bracket.

[0030] The conveying assembly 1 also includes a second conveyor belt 11, a support block 161, a second support shaft 12, a third synchronous pulley 162, a fourth synchronous pulley 121, and a second drive wheel 142. Of the two movable parts 16, one is connected to the support block 161. In this embodiment, only one movable part 16 is connected to the support block 161, and the support block 161 is connected to the top of the movable part 16 on the side away from the installation space. The two third synchronous pulleys 162 are respectively connected to opposite sides of the support block 161. The fourth synchronous pulley 121 is rotatably sleeved on the second support shaft 12, and both ends of the second support shaft 12 are respectively connected to two third support plates 41. The second drive wheel 142 is sleeved on the drive shaft 14 and connected to the drive shaft 14, thereby enabling the second drive wheel 142 to rotate together with the drive shaft 14. The second conveyor belt 11 is wound around the third synchronous pulley 162, the fourth synchronous pulley 121, and the second drive wheel 142. The first drive member 6 can simultaneously drive the first conveyor belt 15 and the second conveyor belt 11 to move. The top side of the second conveyor belt 11 forms the conveying side of the second conveyor belt 11. The central axes of the third synchronous pulley 162, the fourth synchronous pulley 121, the first synchronous pulley 163, and the second synchronous pulley 44 are located in the same plane, thereby making the conveying side of the first conveyor belt 15 and the conveying side of the second conveyor belt 11 in the same plane. This allows the half-cell battery 7 on the first conveyor belt 15 to move onto the second conveyor belt 11, and vice versa. The second conveyor belt 11 enables the testing conveying device to interface with external devices. The second conveyor belt 11 is used for transfer transition, that is, the second conveyor belt 11 can convey the half-cell battery 7 from the outside to the first conveyor belt 15, and can also convey the half-cell battery 7 on the first conveyor belt 15 to the outside via the second conveyor belt 11.

[0031] The conveying assembly 1 also includes a third support shaft 13 and a fourth tensioning wheel 131. The two ends of the third support shaft 13 are respectively connected to two third support plates 41, and the fourth tensioning wheel 131 is rotatably sleeved on the third support shaft 13. The third support shaft 13 is located between the conveying side of the second conveyor belt 11 and the drive shaft 14. The second conveyor belt 11 is also wound around the fourth tensioning wheel 131; specifically, the second conveyor belt 11 and the fourth tensioning wheel 131 are in contact at a position away from the moving part 16. Preferably, the third support plate 41 is provided with a second adjustment hole, which is an oblong hole. The two ends of the third support shaft 13 are connected to the second adjustment hole by bolts, thereby allowing the position of the third support shaft 13 to be adjusted, and thus adjusting the tension of the second conveyor belt 11.

[0032] The support assembly 2 also includes a connecting seat 22, a first support shaft 24, and a third tensioning wheel 23. One side of the connecting seat 22 is provided with an adjusting groove 25, which extends along the movement path of the movable member 16. The top side of the adjusting groove 25 is provided with a first adjusting hole penetrating the side wall of the adjusting groove 25. The first adjusting hole is an oblong hole that extends along the movement path of the movable member 16. The end of the first support shaft 24 is connected to the first adjusting hole by a screw. The third tensioning wheel 23 is rotatably sleeved on the first support shaft 24. The first conveyor belt 15 is also wound around the third tensioning wheel 23. When the screw is not tightened, the first support shaft 24 can move along the adjusting groove 25, thereby adjusting the tension of the first conveyor belt 15.

[0033] The testing conveying device includes two first conveyor belts 15 and two second conveyor belts 11. The first conveyor belts 15 are located on both sides of the movable part 16, and the second conveyor belts 11 are located on both sides of the support block 161, so as to make the conveying of half battery cells 7 more stable.

[0034] Reference Figure 3 and Figure 4 As shown, the adjustment assembly 8 includes a second driving member 83, a transmission member 81, and adjusting members 82. Specifically, the two adjusting members 82 are connected to the transmission member 81, which can be considered as a bidirectional lead screw. The output end of the second driving member 83 is connected to the end of the transmission member 81. In this embodiment, the second driving member 83 is a handwheel. In another embodiment, the second driving member 83 can also be a motor. The second driving member 83 drives the transmission member 81 to rotate, thereby enabling the two adjusting members 82 to move in opposite directions, i.e., the two adjusting members 82 move in opposite directions. The two adjusting members 82 are respectively connected to two movable members 16, so that the movement of the adjusting members 82 can drive the movement of the movable members 16.

[0035] The movable component 16 is slidably connected to the first support plate 42, and the sliding path of the movable component 16 is parallel to the moving path of the adjusting component 82. The first support plate 42 is connected to a slide rail 84, and the movable component 16 is slidably connected to the slide rail 84. Specifically, the first support plate 42 is connected to two parallel slide rails 84, and a clearance hole is provided on the first support plate 42 at a position corresponding to the position between the two slide rails 84. The clearance hole is an oblong hole extending along the moving path of the movable component 16. A protrusion is provided on the top side of the adjusting component 82, which passes through the clearance hole and connects to the movable component 16. A stop block 85 is also connected to the first support plate 42, located at the end of the slide rail 84. The stop block 85 is used to limit the extreme position of the movable component 16, preventing the movable component 16 from disengaging from the slide rail 84.

[0036] The adjusting assembly 8 also includes two support seats 86, located at both ends of the transmission member 81, with the transmission member 81 rotatably connected to the support seats 86. The support seats 86 are used to support the transmission member. The support assembly 2 also includes a fixing plate 21, which is connected to the top side of the base. Both connecting seats 22 are connected to the fixing plate 21. Of the two support seats 86, one support seat 86 is connected to the fixing plate 21, and the other support seat 86 is connected to the base.

[0037] Reference Figure 2 and Figure 3 As shown, the conveying device for testing also includes a connecting frame 3, which includes a connecting plate 31. The connecting plate 31 is connected to the base via a support column 32. The connecting plate 31 has two openings, the width of which is greater than the width of the movable member 16. The two movable members 16 pass through the two openings respectively. A first clearance groove 165 is provided on the side of the movable members 16 that is furthest apart from each other. The plane of the connecting plate 31 is lower than the plane of the top side of the first clearance groove 165. By moving the movable members 16 in a direction away from each other, the edge of the opening can be located within the first clearance groove 165. The connecting plate 31 can prevent debris and dust from affecting the adjusting component 8. When a light source and a testing component need to be installed in the installation space, clearance openings can be provided on the connecting plate 31 at the positions corresponding to the mounting holes, thereby preventing the connecting plate 31 from affecting the cooperation of the testing component and the light source. In another embodiment, the testing component and the light source can be installed on the connecting plate 31.

[0038] Reference Figure 3 and Figure 4 As shown, the top side of the movable part 16 is also provided with a detection hole 166. A sensor is connected in the first clearance groove 165. The sensor is connected to the controller. The detection end of the sensor faces the detection hole 166. The sensor is used to detect whether there is a half battery cell 7 above the movable part 16. Figure 3 The cylindrical part with the through-hole 166 is a schematic diagram of the detection path of the sensor.

[0039] The testing conveying device also includes a material tray 5 connected to the base, which can be used to hold battery cells that fail the test.

[0040] In use, the first conveyor belt 15 moves the two half-cell batteries 7 until their positions correspond to the two movable parts 16, and the cutting positions of the two half-cell batteries 7 correspond to the installation space between the two movable parts 16. At this point, the two half-cell batteries 7 are inspected by a detection component. When inspecting half-cell batteries 7 of different sizes, the second drive component 83 drives the adjusting component 82 to move through the transmission component 81, thereby moving the movable part 16 until the conveying side length of the first conveyor belt 15 is adapted to the size of the half-cell battery 7.

[0041] This utility model discloses a conveying device for testing. Through the connection between the adjusting member 82 and the movable member 16, the second driving member 83, via the transmission member 81, can drive the two movable members 16 to move towards or away from each other, thereby adjusting the distance between the two movable members 16. This allows for the simultaneous testing of two half-cell batteries 7, and enables the testing of half-cell batteries 7 of different sizes, improving testing efficiency. The installation space can accommodate the testing component for the half-cell battery 7 and a light source, allowing for multi-angle testing of the appearance and cutting position of the half-cell battery 7 in conjunction with the testing component outside the installation space.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A conveying device for testing, characterized in that, include: The conveying assembly includes a drive shaft, a first drive wheel, a first conveyor belt, and two movable parts. The movable parts are rotatably connected to a first synchronous wheel. The first drive wheel is sleeved on the drive shaft, and the first conveyor belt is wound around the first synchronous wheel and the first drive wheel. A first driving component, the output end of which is connected to the end of the driving shaft; The adjustment assembly includes a second drive member, a transmission member, and an adjustment member. The two adjustment members are connected to the transmission member. The output end of the second drive member is connected to the end of the transmission member. The two adjustment members are respectively connected to the two movable members. The two adjustment members can move in directions that are closer to or further away from each other.

2. The conveying device for testing according to claim 1, characterized in that: It also includes a support frame, which includes a first support plate. The movable member is slidably connected to the first support plate, and the sliding path of the movable member is parallel to the moving path of the adjusting member.

3. The conveying device for testing according to claim 2, characterized in that: The support frame further includes a second support plate, which is located between the two movable parts. The second support plate is connected to the first support plate, and at least two second synchronous pulleys are rotatably connected to the second support plate. The first conveyor belt is also wound around the second synchronous pulleys, and the central axes of the at least two second synchronous pulleys and the two first synchronous pulleys are located in the same plane.

4. The conveying device for testing according to claim 3, characterized in that: The movable component is also rotatably connected to a first tensioning wheel, and the second support plate is rotatably connected to a second tensioning wheel. The first tensioning wheel is located between the two second tensioning wheels, and the first conveyor belt is also wound around the first tensioning wheel and the second tensioning wheel.

5. The conveying device for testing according to claim 2, characterized in that: The first support plate is connected to a slide rail, and the movable part is slidably connected to the slide rail. A stop block is also connected to the first support plate, and the stop block is located at the end of the slide rail.

6. The conveying device for testing according to claim 5, characterized in that: The first support plate is connected to at least two slide rails. A clearance hole is provided on the first support plate at the position between the two slide rails. The clearance hole extends along the moving path of the movable component. A protrusion is provided on one side of the adjusting component. The protrusion passes through the clearance hole and is connected to the movable component.

7. The conveying device for testing according to claim 1, characterized in that: It also includes a support assembly, which includes a connecting seat, a first support shaft and a third tensioning wheel. The connecting seat is provided with an adjustment groove, and a first adjustment hole is provided on one side of the adjustment groove. The first support shaft can move along the adjustment groove and is connected to the first adjustment hole. The third tensioning wheel is rotatably sleeved on the first support shaft, and the first conveyor belt is also wound around the third tensioning wheel.

8. The conveying device for testing according to claim 1, characterized in that: The conveying assembly further includes a second conveyor belt, a support block, a second support shaft, a third synchronous pulley, a fourth synchronous pulley, and a second drive wheel. Of the two movable parts, one of the movable parts is connected to the support block, the third synchronous pulley is rotatably connected to the support block, the fourth synchronous pulley is rotatably sleeved on the second support shaft, the central axes of the third synchronous pulley, the fourth synchronous pulley, and the first synchronous pulley are located in the same plane, the second drive wheel is sleeved on the drive shaft, and the second conveyor belt is wound around the third synchronous pulley, the fourth synchronous pulley, and the second drive wheel.

9. The conveying device for testing according to claim 8, characterized in that: The conveying assembly further includes a third support shaft and a fourth tensioning wheel, the fourth tensioning wheel being rotatably mounted on the third support shaft, and the second conveyor belt being wound around the fourth tensioning wheel.

10. The conveying device for testing according to claim 1, characterized in that: It also includes a connecting frame, which includes a connecting plate with two openings. The two movable parts pass through the two openings respectively. The movable parts are provided with a first clearance groove, and the edge of the opening can be located in the first clearance groove.

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