Automobile part detection platform

Abstract

The invention relates to the technical field of automobile part detection, and discloses an automobile part detection platform which comprises an operation table, a mounting support is fixed to one side of the operation table, a positioning frame is fixed to one side of the top end of the mounting support, a portal frame is fixed to the bottom of the positioning frame, and an air supply cavity is formed in the horizontal part of the portal frame. The automobile part detection platform comprises an air supply cavity, limiting rings are fixed to the inner walls of the two sides of the air supply cavity, a draught fan is fixed to the interior of the air supply cavity, a rotating shaft of the draught fan is clamped into the limiting rings, a conveying pipe is fixed to the surface of the draught fan, and a ventilation hose is fixed to one end of the conveying pipe. The center line of the automobile part is adjusted to be collinear with the center line of the conveying belt, the center line of the line laser profile measuring instrument and the center line of the supporting plate through the calibration assembly, the detection accuracy of the line laser profile measuring instrument is improved, and in the later automobile part sorting process, clamping of the automobile part is more stable.

Description

Technical Field

[0001] This invention relates to the field of automotive parts testing technology, specifically to an automotive parts testing platform. Background Technology

[0002] A car is assembled from many car parts. After these car parts are manufactured and processed, they need to be tested for various items, such as air tightness, contour, or water resistance. When performing contour appearance inspection, a line laser contour measuring instrument is usually used.

[0003] When using a line laser profile measuring instrument to inspect the profile appearance of automotive parts, a conveyor is generally used to transport the automotive parts to the bottom of the line laser profile measuring instrument, so that the line laser profile measuring instrument can scan the profile of the automotive parts. Then, the qualified automotive parts are transported to the storage platform, and the unqualified automotive parts are sorted to another storage platform. During the above process, the surface of the car parts must not contain debris or garbage, as this will affect the accuracy of the scanning and inspection. Therefore, the surface of the car parts needs to be cleaned before performing contour inspection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automotive parts testing platform that solves the problems mentioned in the background section.

[0005] The present invention provides the following technical solution: an automotive parts testing platform, including an operating table, a mounting bracket fixed on one side of the operating table, a positioning frame fixed on one side of the top of the mounting bracket, a gantry frame fixed at the bottom of the positioning frame, an air supply cavity opened inside the horizontal part of the gantry frame, limit rings fixed on the inner walls of both sides of the air supply cavity, a fan fixed inside the air supply cavity, the fan shaft being snapped into the limit ring, and the fan being hinged to the inner walls of both sides of the air supply cavity; A conveying pipe is fixed to the surface of the fan, and a ventilation hose is fixed to one end of the conveying pipe. A fixing clamp is fixed to the bottom of the horizontal part of the gantry frame. The ventilation hose is snapped into the inside of the fixing clamp and abuts against the fixing clamp. A calibration component for calibrating workpieces is provided inside the gantry frame. The calibration assembly includes two sliding grooves, which are located on both sides of the bottom of the horizontal part of the gantry. A bidirectional lead screw is rotatably connected to the inner wall of one end of the sliding groove. Linkage plates are threaded to the surfaces of both ends of the bidirectional lead screw. A calibration frame is fixed on one side of the two linkage plates, and the two ends of the ventilation hose are slidably connected to the calibration frame.

[0006] Optionally, a wired laser profile measuring instrument is fixed to the bottom of the horizontal part of the mounting bracket, a drive motor is fixed to the surface of the operating table, the output shaft of the drive motor passes through the operating table, and a belt assembly for conveying the workpiece is provided on the surface of the output shaft of the drive motor. The belt assembly includes two drive shafts, which are rotatably connected to the operating table. One of the drive shafts is fixed to the output shaft of the drive motor, and a conveyor belt is connected to the surface of the two drive shafts.

[0007] Optionally, air outlets are provided at the bottom of both ends of the ventilation hose, and multiple air holes are evenly provided on the surface of the ventilation hose away from the gantry.

[0008] Optionally, a first spring is fixed to the inner wall of the sliding groove, a movable plate is fixed to one end of the first spring near the linkage plate, a movable clamp is fixed to the bottom of the movable plate, the bidirectional lead screw is located inside the first spring, and the ventilation hose passes through the movable clamp but is not fixed to the movable clamp.

[0009] Optionally, an extension plate is fixed to the side of the mounting bracket away from the positioning frame, a servo motor is fixed to the top of the extension plate away from the mounting bracket, the output shaft of the servo motor passes through the extension plate, and a rotating support plate is fixed to the output shaft of the servo motor. A first cylinder is fixed to the bottom of the rotating support plate away from the servo motor, and a bracket is fixed to the output shaft of the first cylinder.

[0010] Optionally, a second cylinder is fixed inside the bracket, and a support plate is fixed to the output shaft of the second cylinder. The support plate is slidably connected to the bracket, and the end of the support plate near the conveyor belt is arc-shaped.

[0011] Optionally, a third cylinder is fixed inside the bracket at the end away from the tray, and an upper clamping plate is fixed to the output shaft of the third cylinder. A first slot is opened on the surface of the upper clamping plate, and a linkage shaft is rotatably connected inside the first slot. A pressing plate is fixed to the surface of the linkage shaft. The upper clamping plate has a second groove on both sides of the first groove near the conveyor belt, and an adjustment groove is formed on both sides of the second groove.

[0012] Optionally, a third slot is provided in the middle of the upper clamping plate near the conveyor belt. Motors are fixed on both sides of the bottom of the third slot, and transmission screws are engaged on both sides inside the third slot. The transmission screws have teeth at the end near the motor and mesh with the gears of the motor. The untoothed end of the transmission screw is located inside the adjustment groove. A side clamp is threadedly connected to the surface of the transmission screw. The side clamp is slidably connected to the adjustment groove. A limit rod is slidably connected inside the side clamp away from the conveyor belt. The limit rod is fixed inside the two adjustment grooves on the side away from the conveyor belt.

[0013] Optionally, an assembly housing is fixed to the top of the upper clamping plate. A first storage cavity is formed on the surface of the assembly housing corresponding to the first slot. A second storage cavity is formed on the surface of the assembly housing corresponding to the second slot. A third storage cavity is formed on the surface of the assembly housing corresponding to the third slot. A second spring is fixed inside the first storage cavity. One end of the second spring is fixed to the pressing plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This automotive parts inspection platform uses a calibration component to adjust the centerline of the automotive parts to be collinear with the centerline of the conveyor belt, the line laser profile measuring instrument, and the pallet. This not only improves the accuracy of the line laser profile measuring instrument but also makes the clamping of automotive parts more stable during the subsequent sorting process.

[0015] 2. This automotive parts inspection platform uses a pressing plate to adaptively fit the raised surface of irregular automotive parts, allowing the upper clamping plate to pass through the highest point of the raised part and, with the cooperation of the pallet, clamp the automotive part. At the same time, it limits the raised part to prevent the automotive parts from shifting during sorting and transportation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the gantry frame of the present invention; Figure 4 This is an internal structural view of the gantry frame of the present invention; Figure 5 This is a cross-sectional view of the gantry frame of the present invention; Figure 6 This is a schematic diagram of the calibration component of the present invention; Figure 7 This is a schematic diagram showing the positional relationship between the servo motor, the rotating support plate, and the first cylinder of the present invention. Figure 8 This is a cross-sectional view of the bracket of the present invention; Figure 9 This is an internal view of the structure of the clamping plate of the present invention; Figure 10 This is a schematic diagram of the structure of the clamping plate of the present invention; Figure 11 This is a cross-sectional view of the upper clamping plate of the present invention; Figure 12 This is a schematic diagram of the ventilation hose of the present invention.

[0017] In the diagram: 1. Operating console; 11. Mounting bracket; 12. Line laser profile measuring instrument; 2. Drive motor; 21. Conveyor belt; 3. Positioning frame; 31. Gantry frame; 32. Air supply chamber; 33. Limit ring; 34. Fan; 35. Conveyor pipe; 36. Ventilation hose; 37. Fixing clamp; 38. Air outlet; 4. Sliding groove; 41. Bidirectional lead screw; 42. Linkage plate; 43. Calibration frame; 44. First spring; 45. Movable plate; 46. Movable clamp; 5. Extension plate; 51. Servo 52. Motor; 53. Rotating support plate; 54. First cylinder; 55. Bracket; 56. Second cylinder; 57. Support plate; 6. Third cylinder; 78. Upper clamping plate; 79. First slot; 70. Linkage shaft; 71. Pressing plate; 72. Second slot; 73. Adjustment slot; 74. Third slot; 75. Motor; 76. Drive screw; 77. Limiting rod; 78. Side clamping plate; 89. Assembly housing; 80. First storage cavity; 81. Second storage cavity; 82. Third storage cavity; 83. Second spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0019] Please see Figure 1-12 An automotive parts testing platform includes an operating table 1. A mounting bracket 11 is fixed to one side of the operating table 1. A positioning frame 3 is fixed to one side of the top of the mounting bracket 11. A gantry frame 31 is fixed to the bottom of the positioning frame 3. An air supply cavity 32 is opened inside the horizontal part of the gantry frame 31. Limiting rings 33 are fixed to the inner walls on both sides of the air supply cavity 32. A fan 34 is fixed inside the air supply cavity 32. The rotating shaft of the fan 34 is engaged inside the limiting ring 33. The fan 34 is hinged to the inner walls on both sides of the air supply cavity 32. A conveying pipe 35 is fixed to the surface of the fan 34. A ventilation hose 36 is fixed to one end of the conveying pipe 35. A fixing clamp 37 is fixed to the bottom of the horizontal part of the gantry frame 31. The ventilation hose 36 is snapped into the inside of the fixing clamp 37 and abuts against the fixing clamp 37. A calibration assembly for calibrating workpieces is provided inside the gantry frame 31. The calibration assembly includes two sliding grooves 4. The sliding grooves 4 are opened on both sides of the bottom end of the horizontal part of the gantry frame 31. A double-acting screw 41 is rotatably connected to the inner wall of one end of the sliding groove 4. A linkage plate 42 is threaded to the surface of both ends of the double-acting screw 41. A calibration frame 43 is fixed to one side of the two linkage plates 42 opposite to each other. The two ends of the ventilation hose 36 are slidably connected to the calibration frame 43. A wired laser profile measuring instrument 12 is fixed at the bottom of the horizontal part of the mounting bracket 11. A drive motor 2 is fixed on the surface of the operating table 1. The output shaft of the drive motor 2 passes through the operating table 1, and the surface of the output shaft of the drive motor 2 is provided with a belt assembly for conveying the workpiece. The belt assembly includes two drive shafts, which are rotatably connected to the operating table 1. One of the drive shafts is fixed to the output shaft of the drive motor 2. The surfaces of the two drive shafts are connected to a conveyor belt 21. The ventilation hose 36 has air outlets 38 at the bottom of both ends. Multiple air holes are evenly distributed on the surface of the ventilation hose 36 away from the gantry 31. A first spring 44 is fixed to the inner wall of the sliding groove 4. A movable plate 45 is fixed to the end of the first spring 44 near the linkage plate 42. A movable clamp 46 is fixed to the bottom of the movable plate 45. The bidirectional screw 41 is located inside the first spring 44. The ventilation hose 36 passes through the movable clamp 46 but is not fixed to the movable clamp 46. During operation, the car parts are first placed in an orderly manner on the surface of the conveyor belt 21. Then, the drive motor 2 and the line laser profile measuring instrument 12 are started by the controller. The drive motor 2 drives the conveyor belt 21 to move the car parts toward the line laser profile measuring instrument 12. When the car parts pass under the line laser profile measuring instrument 12, the line laser profile measuring instrument 12 scans the contour of the car parts. After the car parts have been inspected, they are transported toward the storage platform by the conveyor belt 21. This is the process of using the line laser profile measuring instrument 12 to inspect car parts in the prior art, and will not be described in detail in this invention. Specifically, in actual operation, before testing, the bidirectional lead screw 41 is manually rotated according to the width of the automotive parts. This causes the bidirectional lead screw 41 to drive the linkage plates 42 on both ends of its surface to adjust the spacing. The linkage plates 42 then drive the calibration frames 43 to adjust the spacing, so that the spacing between the two calibration frames 43 is equal to the width of the parts. This ensures that the center line of the calibration frames 43 is collinear with the center line of the conveyor belt 21 and the line laser profile measuring instrument 12. When placing the automotive parts, they are placed in the middle of the two calibration frames 43, which ensures that the center line of the automotive parts is collinear with the center line of the line laser profile measuring instrument 12, thereby ensuring the comprehensiveness of the line laser profile measuring instrument 12's testing. Furthermore, when adjusting the distance between the two calibration frames 43, the calibration frame 43 drives the two ends of its internal ventilation hose 36 to move synchronously, so that the bending amplitude of the two ends of the ventilation hose 36 changes synchronously, thereby causing the air holes on the surface of the ventilation hose 36 that exceed the width of the automotive parts to shrink into the interior of the calibration frame 43, and the air holes left on the top of the automotive parts correspond to the width of the automotive parts. When the automotive parts pass through the calibration rack 43, the controller starts the fan 34, causing the fan 34 to rotate and generate air force. At the same time, the generated air force is delivered into the interior of the ventilation hose 36 through the delivery pipe 35, and then the air force is concentrated and blown to the surface of the automotive parts through the air holes on the surface of the ventilation hose 36, so that the debris and garbage on the surface of the automotive parts can be cleaned by air blowing, thereby improving the cleanliness of the surface of the automotive parts and thus improving the accuracy of the test. Furthermore, with the cooperation of the air holes and air outlets 38 inside the calibration frame 43 in the ventilation hose 36, the air in the ventilation hose 36 can be directly blown into the interior of the calibration frame 43, and under the action of the calibration frame 43, it is concentrated and blown towards the side of the automotive parts, thereby improving the comprehensiveness of the air cleaning of the automotive parts and further improving the accuracy of automotive parts testing. It should be noted that all devices of the present invention are controlled by a controller. The surface of the calibration rack 43 is provided with an opening, and the opposite side of the calibration rack 43 is arc-shaped, and its inner wall is also arc-shaped. Therefore, when the wind enters the interior of the calibration rack 43, it can be gathered through the opening of the calibration rack 43 and concentrated and blown to both sides of the automotive parts, thereby improving the cleaning power of the wind. Meanwhile, to ensure the stability of the ventilation hose 36, the fixed clamp 37 acts as a tightening and limiting clamp on the ventilation hose 36. When the ventilation hose 36 is bent, the bent part of the ventilation hose 36 can push the movable clamp 46, which in turn causes the movable clamp 46 to drive the movable plate 45 to compress the first spring 44. This ensures that the movable clamp 46 is always located below the bend of the ventilation hose 36, thereby ensuring the smoothness and horizontality of the bend of the ventilation hose 36. This keeps the internal flow channel of the ventilation hose 36 in a horizontal state, reduces the resistance to airflow, and thus ensures the power of clean airflow. Example

[0020] An extension plate 5 is fixed to the side of the mounting bracket 11 away from the positioning frame 3. A servo motor 51 is fixed to the top of the extension plate 5 away from the mounting bracket 11. The output shaft of the servo motor 51 passes through the extension plate 5, and a rotating support plate 52 is fixed to the output shaft of the servo motor 51. A first cylinder 53 is fixed to the bottom of the rotating support plate 52 away from the servo motor 51. A bracket 54 is fixed to the output shaft of the first cylinder 53. A second cylinder 55 is fixed inside the bracket 54. A support plate 56 is fixed to the output shaft of the second cylinder 55. The support plate 56 is slidably connected to the bracket 54. The end of the support plate 56 near the conveyor belt 21 is arc-shaped. A third cylinder 6 is fixed inside the bracket 54 at the end away from the tray 56. The output shaft of the third cylinder 6 is fixed to an upper clamping plate 7. A first slot 71 is opened on the surface of the upper clamping plate 7. A linkage shaft 72 is rotatably connected inside the first slot 71. A pressing plate 73 is fixed on the surface of the linkage shaft 72. A second slot 74 is opened on both sides of the first slot 71 near the conveyor belt 21 on the surface of the upper clamping plate 7. An adjustment slot 75 is opened on both sides of the second slot 74. Specifically, based on Example 1, after the automotive parts are inspected, they are conveyed toward the bracket 54 under the action of the conveyor belt 21. Since the calibration frame 43 calibrates the center line of the automotive parts, the center line of the automotive parts is collinear with the center line of the bracket 54. When the conveyor belt 21 transports the car parts to the pallet 56, the car parts are moved to the top of the pallet 56 under the action of the conveyor belt 21. At this time, the third cylinder 6 can be started by the controller, so that the third cylinder 6 drives the upper clamping plate 7 and the assembly housing 8 to descend, so that the upper clamping plate 7 cooperates with the pallet 56 to clamp the center of the car parts. Then, the first cylinder 53 can be controlled to return, so that the first cylinder 53 drives the bracket 54 to return, so that the bracket 54 is released from the limit of the operating table 1. Then, the servo motor 51 is started, which drives the rotating support plate 52 and the first cylinder 53 to rotate. Then, the first cylinder 53 drives the bracket 54 to rotate, so that the bracket 54 drives the tray 56, the upper clamping plate 7 and the car parts to rotate, thereby completing the sorting operation of the car parts and transferring qualified and unqualified car parts to the top of different storage platforms respectively. Next, the second cylinder 55 is controlled to return, which causes the pallet 56 to retract into the interior of the bracket 54. At this time, the car parts lose the support of the pallet 56 and can fall onto the storage platform, thus completing the final sorting and storage. Example

[0021] A third slot 76 is provided in the middle of the upper clamping plate 7 near the conveyor belt 21. Motors 77 are fixed on both sides of the bottom of the third slot 76. A transmission screw 78 is engaged on both sides inside the third slot 76. The end of the transmission screw 78 near the motor 77 has teeth and meshes with the gear of the motor 77. The end of the transmission screw 78 without teeth is located inside the adjusting groove 75. A side clamping plate 79 is threaded to the surface of the transmission screw 78. The side clamping plate 79 is slidably connected to the adjusting groove 75. A limit rod 781 is slidably connected inside the side clamping plate 79 away from the conveyor belt 21. The limit rod 781 is fixed inside the two adjusting grooves 75 on the side away from the conveyor belt 21. An assembly housing 8 is fixed to the top of the upper clamping plate 7. A first storage cavity 81 is formed on the surface of the assembly housing 8 corresponding to the first slot 71. A second storage cavity 82 is formed on the surface of the assembly housing 8 corresponding to the second slot 74. A third storage cavity 83 is formed on the surface of the assembly housing 8 corresponding to the third slot 76. A second spring 84 is fixed inside the first storage cavity 81. One end of the second spring 84 is fixed to the pressing plate 73. Specifically, based on Embodiment 1 and Embodiment 2, when the third cylinder 6 is started and drives the upper clamping plate 7 and the assembly housing 8 to return, the upper clamping plate 7 drives the pressing plate 73 and the side clamping plate 79 to return synchronously. When the surface of the car part is flat, the pressing plate 73 is subjected to the pressure of the car part after contacting it, and under the action of the linkage shaft 72, it flips and retracts into the interior of the first slot 71. At this time, the upper clamping plate 7 and the pressing plate 73 simultaneously press the top of the car part, and cooperate with the support plate 56 to clamp the car part. When the surface of the automotive parts is uneven, the pressing plate 73 comes into contact with the protrusions of the automotive parts during the return stroke, is compressed, and flips back into the first slot 71. Due to the different heights of the protrusions, the pressure on the pressing plate 73 is also different, and the degree of flipping is also different. Therefore, the upper clamping plate 7 can drive the pressing plate 73 to adaptively adjust the protrusions of the automotive parts, further improving the stability of clamping uneven automotive parts. Since the raised parts on the surface of the car parts preferentially contact some of the pressing plates 73, and these pressing plates 73 are adaptively adjusted, while the remaining pressing plates 73 that do not contact the raised parts of the car parts remain in an outward flipped state, the outward flipped pressing plates 73 can be used to hook the raised parts of the car parts, so as to avoid reducing the stability of transporting the car parts when the center of the car parts is far away from the pallet 56. Furthermore, when the second slot 74 also contains a protrusion of an automotive part, the protrusion will enter the inner cavity of the second slot 74 and the second storage cavity 82. At this time, the controller can start two motors 77, which drive the transmission screw 78 to rotate. The transmission screw 78 drives the two side clamps 79 to rotate, so that the two side clamps 79 move closer to each other. Since the protrusion on the surface of the automotive part is irregularly arranged, one of the side clamps 79 will contact the protrusion first. At this time, the side clamp 79 plays the role of limiting the protrusion, thereby improving the stability of the automotive parts being sorted. Meanwhile, the other side clamp 79 continues to move toward the motor 77 until it comes into contact with other protrusions, thereby limiting the protrusions. Since both side clamps 79 are in contact with the protrusions, they indirectly clamp the automotive parts, preventing them from shifting during sorting and transfer, thus further improving the stability of sorting and handling automotive parts.

[0022] It should be noted that silicone can be adhered to the surface of the pressing plate 73. When the pressing plate 73 is fully rotated into the inside of the first slot 71, that is, when the car parts are clamped in a flat state, the side of the pressing plate 73 with silicone adhered to it adheres to the surface of the car parts, which further increases the friction of the pressing plate 73 on the car parts, thereby improving the stability of sorting and clamping. Among them, according to Figure 11 It can be seen that the bottom of the inner wall of the first slot 71 near the linkage shaft 72 is inclined to limit the pressing plate 73, so that the angle of the pressing plate 73 flipping outward is limited, thereby achieving the purpose of attaching and limiting the automotive parts.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automotive parts testing platform, comprising an operating table (1), characterized in that: A mounting bracket (11) is fixed on one side of the operating table (1). A positioning frame (3) is fixed on one side of the top of the mounting bracket (11). A gantry frame (31) is fixed at the bottom of the positioning frame (3). An air supply chamber (32) is opened inside the horizontal part of the gantry frame (31). Limiting rings (33) are fixed on the inner walls on both sides of the air supply chamber (32). A fan (34) is fixed inside the air supply chamber (32). The rotating shaft of the fan (34) is clamped inside the limiting ring (33). The fan (34) is hinged to the inner walls on both sides of the air supply chamber (32). The surface of the fan (34) is fixed with a conveying pipe (35), one end of the conveying pipe (35) is fixed with a ventilation hose (36), the bottom of the horizontal part of the gantry frame (31) is fixed with a fixing clamp (37), the ventilation hose (36) is snapped into the inside of the fixing clamp (37) and abuts against the fixing clamp (37), and the gantry frame (31) is provided with a calibration component for calibrating the workpiece; The calibration assembly includes two sliding grooves (4), which are located on both sides of the bottom of the horizontal part of the gantry (31). A bidirectional lead screw (41) is rotatably connected to the inner wall of one end of the sliding groove (4). A linkage plate (42) is threaded to the surface of both ends of the bidirectional lead screw (41). A calibration frame (43) is fixed on one side of the two linkage plates (42) opposite to each other, and the two ends of the ventilation hose (36) are slidably connected to the calibration frame (43).

2. The automotive parts testing platform according to claim 1, characterized in that: A wired laser profile measuring instrument (12) is fixed at the bottom of the horizontal part of the mounting bracket (11). A drive motor (2) is fixed on the surface of the operating table (1). The output shaft of the drive motor (2) passes through the operating table (1), and a belt assembly for conveying the workpiece is provided on the surface of the output shaft of the drive motor (2). The belt assembly includes two drive shafts, which are rotatably connected to the operating table (1), and one of the drive shafts is fixed to the output shaft of the drive motor (2). The surfaces of the two drive shafts are connected to a conveyor belt (21).

3. The automotive parts testing platform according to claim 1, characterized in that: The ventilation hose (36) has air outlets (38) at the bottom of both ends, and multiple air holes are evenly distributed on the surface of the ventilation hose (36) away from the gantry (31).

4. The automotive parts testing platform according to claim 11, characterized in that: The inner wall of the sliding groove (4) is fixed with a first spring (44), and a movable plate (45) is fixed at one end of the first spring (44) near the linkage plate (42). A movable clamp (46) is fixed at the bottom of the movable plate (45). The bidirectional screw (41) is located inside the first spring (44). The ventilation hose (36) passes through the movable clamp (46) and is not fixed to the movable clamp (46).

5. The automotive parts testing platform according to claim 1, characterized in that: An extension plate (5) is fixed on the side of the mounting bracket (11) away from the positioning frame (3). A servo motor (51) is fixed on the top of the extension plate (5) away from the mounting bracket (11). The output shaft of the servo motor (51) passes through the extension plate (5), and a rotating support plate (52) is fixed on the output shaft of the servo motor (51). A first cylinder (53) is fixed on the bottom of the rotating support plate (52) away from the servo motor (51). A bracket (54) is fixed on the output shaft of the first cylinder (53).

6. The automotive parts testing platform according to claim 5, characterized in that: The bracket (54) has a second cylinder (55) fixed inside, and the output shaft of the second cylinder (55) has a support plate (56) fixed thereon. The support plate (56) is slidably connected to the bracket (54), and the end of the support plate (56) near the conveyor belt (21) is arc-shaped.

7. The automotive parts testing platform according to claim 5, characterized in that: A third cylinder (6) is fixed inside the bracket (54) at the end away from the tray (56). The output shaft of the third cylinder (6) is fixed to an upper clamping plate (7). A first slot (71) is opened on the surface of the upper clamping plate (7). A linkage shaft (72) is rotatably connected inside the first slot (71). A pressing plate (73) is fixed on the surface of the linkage shaft (72). The upper clamping plate (7) has a second groove (74) on both sides of the first groove (71) near the conveyor belt (21) on its surface, and an adjustment groove (75) is provided on both sides of the second groove (74).

8. The automotive parts testing platform according to claim 7, characterized in that: The upper clamping plate (7) has a third slot (76) in the middle of the side near the conveyor belt (21). Motors (77) are fixed on both sides of the bottom of the third slot (76). A transmission screw (78) is engaged on both sides inside the third slot (76). The transmission screw (78) has teeth at one end near the motor (77) and meshes with the gear of the motor (77). The toothless end of the transmission screw (78) is located inside the adjustment groove (75). The surface of the transmission screw (78) is threaded with a side clamp (79). The side clamp (79) is slidably connected to the adjustment groove (75). A limit rod (781) is slidably connected inside the side clamp (79) away from the conveyor belt (21). The limit rod (781) is fixed inside the two adjustment grooves (75) on the side away from the conveyor belt (21).

9. The automotive parts testing platform according to claim 8, characterized in that: The top of the upper clamping plate (7) is fixed with an assembly housing (8). The surface of the assembly housing (8) is provided with a first storage cavity (81) corresponding to the position of the first slot (71). The surface of the assembly housing (8) is provided with a second storage cavity (82) corresponding to the position of the second slot (74). The surface of the assembly housing (8) is provided with a third storage cavity (83) corresponding to the position of the third slot (76). The first storage cavity (81) is fixed with a second spring (84). One end of the second spring (84) is fixed with the pressing plate (73).

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