Novel plastic product defect automatic detection device

Abstract

The invention discloses a novel plastic product defect automatic detection device, and relates to the technical field of detection devices, the novel plastic product defect automatic detection device comprises a box body, an inner cavity of the box body is provided with a row of conveying rollers, the conveying rollers are used for intermittently conveying plastic product plates to be detected, and the inner cavity of the box body is provided with a detection assembly for performing defect detection treatment on the plastic product plates. According to the novel plastic product defect automatic detection device, the surface flatness of a plastic product plate is detected through the balls, when protrusions or recesses are detected, marking materials of different colors can be discharged through corresponding channels, marks are reserved at defect positions, operators can conveniently and visually judge whether the defect types are protrusions or recesses, and the detection efficiency is improved. A clear indication is provided for subsequent repair or replacement, the marking materials with two colors are accurately segmented by using the first partition plate and the second partition plate, the marking materials are ensured to accurately correspond to the convex or concave positions on the surface of the plastic product plate, and the marking accuracy and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a novel automatic detection device for defects in plastic products. Background Art

[0002] In the plastic product manufacturing industry, quality control of plastic product boards is crucial. Surface flatness is one of the key indicators for measuring product quality. Plastic product boards with surface defects such as bumps or depressions not only affect the appearance of the product, but may also cause a series of problems during use, such as affecting the assembly accuracy with other components and reducing the structural strength of the product, thereby affecting the performance and service life of the entire product. Therefore, accurate and efficient detection of surface defects in plastic product boards is an indispensable part of the production process.

[0003] Currently, there are some devices on the market for detecting defects in plastic products. These existing technologies have achieved the function of detecting surface defects of plastic product plates to a certain extent. For example, some detection devices use a simple mechanical touch method to determine whether there is a defect by detecting the contact between the probe and the surface of the plastic product plate. When the probe encounters a protrusion or a depression, it triggers a corresponding signal feedback to determine the location of the defect. However, this existing technology has many obvious drawbacks:

[0004] First, in terms of defect type identification, existing technologies can often only detect the presence of defects but cannot clearly distinguish whether the defect is a raised or sunken area. This makes it difficult for operators to directly determine the specific type of defect based on the detection results, which greatly complicates subsequent repair or replacement work. For example, different types of defects, such as raised and sunken areas, may require completely different repair processes. Failure to accurately identify these defects may lead to inappropriate repair measures, which not only fail to effectively solve the problem but may also cause secondary damage to the plastic product board.

[0005] Secondly, the existing technology is insufficient in the accuracy and reliability of defect marking. Although some devices can mark the defect location, the marking method is relatively rough and cannot ensure that the marking material accurately corresponds to the specific defect location on the surface of the plastic product board. Especially when there are multiple types of defects at the same time, marking confusion is likely to occur, making it difficult for operators to accurately find the defect location, reducing the practical application value of the detection results. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the present invention provides a new type of automatic defect detection device for plastic products, which solves the technical problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a novel automatic defect detection device for plastic products, comprising a box body, a row of conveyor rollers provided in the inner cavity of the box body, the conveyor rollers being used to intermittently convey the plastic product plates to be inspected, and a detection component provided in the inner cavity of the box body for performing defect detection on the plastic product plates;

[0008] The detection component includes a fixing frame fixedly installed at the bottom of the box cavity, the fixing frame is slidably connected to a row of control panels in the vertical direction, a detection rod is fixedly connected to the bottom of the control panel, a ball is provided at the bottom of the detection rod, and a first damping spring is provided between the control panel and the fixing frame.

[0009] As a further optimization of the present technical solution, a hopper is fixedly installed on the top of the box body, and a row of material boxes corresponding to the positions of the control panel are fixedly connected to the bottom of the hopper. A telescopic tube is provided at the bottom of the material box, and a discharge pipe is provided at the other end of the telescopic tube. The positions of the discharge pipe and the ball bearing correspond to each other, and a support plate is fixedly installed on the discharge pipe, and the support plate is fixedly installed on the detection rod.

[0010] As a further preferred embodiment of the present technical solution, a row of discharge holes is provided at the bottom of the hopper, a first partition plate is fixedly connected to the middle of the inner cavity of the hopper, and the first partition plate divides the discharge holes into two parts, left and right.

[0011] As a further optimization of the present technical solution, the material box is provided with a discharge trough in the vertical direction, the top of the discharge trough is connected to the discharge hole, the bottom of the discharge trough is connected to the telescopic tube, and the material box is provided with a rectangular groove in the transverse direction.

[0012] As a further preferred embodiment of the present technical solution, a sealing plate is sealingly and slidingly connected in the rectangular groove, a T-shaped rod is fixedly connected to one end of the sealing plate close to the control plate, and the end of the T-shaped rod is slidingly connected to the side wall of the control plate.

[0013] As a further optimization of the present technical solution, a fixed plate is fixedly connected to the surface of the T-rod, and sliding rods slidably installed on the material box are fixedly connected to both ends of the fixed plate, and a second damping spring mounted on the sliding rod is arranged between the fixed plate and the material box; a first through hole and a second through hole are opened on the surface of the sealing plate, and the first through hole and the second through hole are respectively located on both sides of the discharge trough.

[0014] As a further optimization of the present technical solution, the side wall of the control panel is provided with a vertical surface, a first inclined surface and a second inclined surface. When the vertical surface contacts the T-rod, the ball contacts the surface of the plastic product plate to be detected. When the first inclined surface contacts the T-rod, the first inclined surface contacts the convexity of the plastic product plate to be detected. When the second inclined surface contacts the T-rod, the second inclined surface contacts the concaveity of the plastic product plate to be detected.

[0015] As a further optimization of the present technical solution, a driving motor is fixedly installed on the bottom of the box, a disc is fixedly connected to the output end of the driving motor, a shift rod is fixedly connected to the position of the disc deviating from the center of the circle, moving rods are slidably connected on both sides of the box, the inner sections of the two moving rods are fixedly connected to a connecting frame, and the shift rod is slidably connected to the connecting frame, and a fitting slide is fixedly connected to the outer wall of the moving rod, and the inner wall of the fitting slide fits and slides with the side wall of the plastic product board to be inspected.

[0016] Compared with the existing technology, it has the following beneficial effects:

[0017] The surface flatness of the plastic product board is detected by a ball bearing. When a convexity or concaveness is detected, different colored marking materials can be discharged through the corresponding channels, leaving a mark at the defect location, so that the operator can intuitively judge whether the defect type is a convexity or a concaveness, providing clear instructions for subsequent repair or replacement. The first partition plate and the second partition plate are used to accurately separate the two colors of marking materials to ensure that the marking materials accurately correspond to the convexity or concave position on the surface of the plastic product board, thereby improving the accuracy and reliability of the marking.

[0018] The control panel can be moved up and down according to the degree of protrusion or depression, changing the degree of connectivity between the first through hole or the second through hole and the discharge chute, thereby controlling the discharge volume of the marking material. By observing the changes in the discharge volume, the operator can judge the degree of protrusion or depression, providing a basis for more accurate evaluation of the quality of the plastic product board.

[0019] By driving the motor to drive the disc, lever and other components to form a precise fit, the plastic product plate can be automatically reciprocated without manual intervention, which speeds up the inspection process and significantly improves the inspection efficiency. It can complete the comprehensive inspection of the plastic product plate in a relatively short time. The fitting slide guides the plastic product plate to be inspected to move back and forth longitudinally along the conveyor roller, so that the inspection rod and the ball can perform a comprehensive inspection of the plastic product plate as the plastic product plate moves. This reciprocating motion ensures that all parts of the plastic product plate can be detected, avoiding the possibility of missed inspections due to the fixed inspection position, greatly improving the comprehensiveness of the inspection. The comprehensive inspection can promptly detect any defects on the plastic product plate, whether it is a minor surface defect or a larger structural problem, which can be accurately identified. This provides a reliable basis for subsequent defect processing, helps to repair or replace defective plastic product plates in a timely manner, and ensures the quality and performance of the plastic product plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic structural diagram of a cross-section of the box body in the present invention;

[0022] Figure 3This is a schematic diagram of the structure of the fixing frame, control panel, material box, telescopic tube, and support plate in the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the control board, detection rod, and ball in the present invention;

[0024] Figure 5 It is a schematic structural diagram of a cross-section of the material box in the present invention;

[0025] Figure 6 This is a schematic diagram of the exploded structure of the material box and the sealing plate in the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the hopper in the present invention from a top view;

[0027] Figure 8 It is a structural schematic diagram of the movable rod and the fitting slide in the present invention.

[0028] 31. The camshaft 320 is provided with a plurality of support plates, a plurality of support plates and a plurality of support plates, and a plurality of support plates are provided with a plurality of support plates. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1: Combination Figures 1-8 As shown, the present invention provides a technical solution: a new type of automatic defect detection device for plastic products, comprising a box body 1, a row of conveying rollers 2 are provided in the inner cavity of the box body 1, and the conveying rollers 2 are used to intermittently convey the plastic product plates to be inspected. The inner cavity of the box body 1 is provided with a detection component 3 for performing defect detection processing on the plastic product plates;

[0031] The detection assembly 3 includes a fixing frame 31 fixedly mounted at the bottom of the inner cavity of the box body 1. The fixing frame 31 is slidably connected to a row of control panels 32 in the vertical direction. A detection rod 33 is fixedly connected to the bottom of the control panel 32. A ball 34 is provided at the bottom of the detection rod 33. A first damping spring 35 is provided between the control panel 32 and the fixing frame 31. The elastic force of the first damping spring 35 pushes the control panel 32, the detection rod 33, and the ball 34 to move downward, so that the ball 34 slides in contact with the surface of the plastic product plate to be tested. When the surface of the plastic product plate to be tested is convex or concave, the elastic force of the first damping spring 35 can cause the detection rod 33 and the ball 34 to move upward or downward.

[0032] A hopper 36 is fixedly installed on the top of the box body 1, and a row of material boxes 37 corresponding to the positions of the control board 32 are fixedly connected to the bottom of the hopper 36. A telescopic tube 38 is provided at the bottom of the material box 37, and a discharge pipe 310 is provided at the other end of the telescopic tube 38, and the positions of the discharge pipe 310 and the ball 34 correspond to each other. A support plate 39 is fixedly installed on the discharge pipe 310, and the support plate 39 is fixedly installed on the detection rod 33; a row of discharge holes 313 are provided at the bottom of the hopper 36, and a first partition plate 312 is fixedly connected to the middle of the inner cavity of the hopper 36, and the first partition plate 312 divides the discharge hole 313 into two parts on the left and right; the material box 37 is vertically A discharge trough 314 is provided on the top, the top of the discharge trough 314 is connected to the discharge hole 313, and the bottom of the discharge trough 314 is connected to the telescopic tube 38. A rectangular groove 316 is provided transversely on the material box 37. The two colors of marking materials are respectively put into the two sides of the first partition plate 312 in the hopper 36, and enter the discharge trough 314 on both sides of the second partition plate 315 through the discharge hole 313. They are then discharged through the telescopic tube 38 and the discharge pipe 310 for surface treatment. The two colors of marking materials are separated by the first partition plate 312 and the second partition plate 315 to assist the operator in determining whether the defect of the plastic product plate to be inspected is a convex or concave defect.

[0033] A sealing plate 317 is sealed and slidably connected in the rectangular groove 316. A T-shaped rod 318 is fixedly connected to the end of the sealing plate 317 near the control plate 32. The end of the T-shaped rod 318 is slidably connected to the side wall of the control plate 32; a fixed plate 319 is fixedly connected to the surface of the T-shaped rod 318. The two ends of the fixed plate 319 are fixedly connected to a slide rod 320 slidably mounted on the material box 37. A second damping spring 321 is provided between the fixed plate 319 and the material box 37 and is sleeved on the slide rod 320; a first through hole 322 and a second through hole 323 are opened on the surface of the sealing plate 317. The first through hole 322 and the second through hole 323 are respectively located at the discharge groove 314 On both sides of the 319, the elastic force of the second damping spring 321 pushes the fixing plate 319 and the T-shaped rod 318 to move toward the side of the control plate 32, so that the T-shaped rod 318 slides in contact with the side wall of the control plate 32. When the ball 34 contacts the protrusion or depression of the plastic product plate to be detected, the control plate 32 moves upward or downward, so that the control plate 32 pushes the T-shaped rod 318 to move horizontally, thereby driving the sealing plate 317 to slide horizontally in the rectangular groove 316. When encountering a protrusion, the first through hole 322 is connected to the discharge groove 314, and when encountering a depression, the second through hole 323 is connected to the discharge groove 314.

[0034] The side wall of the control panel 32 is provided with a vertical surface 324, a first inclined surface 325 and a second inclined surface 326. When the vertical surface 324 contacts the T-bar 318, the ball 34 contacts the surface of the plastic product plate to be detected. When the first inclined surface 325 contacts the T-bar 318, the first inclined surface 325 contacts the convexity of the plastic product plate to be detected. When the second inclined surface 326 contacts the T-bar 318, the second inclined surface 326 contacts the concaveity of the plastic product plate to be detected.

[0035] In the embodiment of the present invention, during the inspection of plastic product plates, the plastic product plates to be inspected must first be placed steadily on the conveyor rollers 2. Subsequently, the conveyor rollers 2 intermittently move the plastic product plates to be inspected laterally so as to proceed to the next inspection process. On one side of the inspection device, two different colored marking materials are prepared. These marking materials are respectively put into the hopper 36 and accurately placed on both sides of the first partition plate 312. These marking materials pass through the discharge holes 313 of the hopper 36 and enter the discharge troughs 314 on both sides of the second partition plate 315.

[0036] During the inspection process, the ball 34 slides on the surface of the plastic product plate to be inspected. The function of the ball 34 is to detect the flatness of the surface of the plastic product plate. When the ball 34 contacts the convex or concave part of the plastic product plate to be inspected, the corresponding action of the control board 32 is triggered. The control board 32 moves up or down according to the movement of the ball 34, thereby pushing the T-shaped rod 318 to move horizontally. The horizontal movement of the T-shaped rod 318 drives the sealing plate 317 to slide horizontally in the rectangular groove 316.

[0037] When a bulge is detected on the surface of the plastic product plate, the first through hole 322 communicates with the discharge trough 314, allowing a marking material of one color to be discharged through this channel, thereby leaving a mark on the bulge portion of the plastic product plate. Conversely, when a depression is detected, the second through hole 323 communicates with the discharge trough 314, allowing a marking material of another color to be discharged through this channel, thereby leaving a mark on the depression portion. The marking material is finally discharged through the telescopic tube 38 and the discharge pipe 310, completing the marking process on the surface of the plastic product plate.

[0038] During the entire process, the two colors of marking materials are precisely divided by the first partition plate 312 and the second partition plate 315, ensuring that the marking materials can accurately correspond to the convex or concave positions on the surface of the plastic product board. This design allows operators to more intuitively determine the type of defect on the plastic product board to be inspected, whether it is a convex or concave defect, thereby providing clear instructions for subsequent repair or replacement work;

[0039] At the same time, the control plate 32 also has the ability to adjust according to the degree of protrusion or depression. It can move up or down, and the amplitude of its movement can be increased or decreased as needed. This adjustment causes the degree of connectivity between the first through hole 322 or the second through hole 323 and the discharge groove 314 to change accordingly, becoming more open or more closed. In this way, the discharge amount of the marking material can be controlled to increase or decrease the amount discharged. This mechanism allows us to judge the degree of protrusion or depression by observing the changes in the discharge amount.

[0040] Example 2: Combination Figure 8As shown, on the basis of Example 1, a driving motor 327 is fixedly installed at the bottom of the box body 1, and a disc 328 is fixedly connected to the output end of the driving motor 327. A shift rod 329 is fixedly connected to the position of the disc 328 deviating from the center of the circle. Moving rods 330 are slidably connected on both sides of the box body 1. The inner sections of the two moving rods 330 are fixedly connected to the connecting frame 331, and the shift rod 329 is slidably connected to the connecting frame 331. The outer wall of the moving rod 330 is fixedly connected to the fitting slide 332, and the inner wall of the fitting slide 332 slides in fit with the side wall of the plastic product plate to be inspected. By starting the driving motor 327, the operation of the driving motor 327 drives the synchronous rotation of the disc 328 and the shift rod 329. As the lever 329 rotates, it forms a precise fit with the connecting frame 331, the moving rod 330 and the bonding slide 332, allowing these components to move back and forth. This reciprocating motion enables the bonding slide 332 to guide the plastic product plate to be inspected to move back and forth longitudinally along the conveyor roller 2. At the same time, the detection rod 33 and the ball 34 also perform corresponding detection actions as the plastic product plate to be inspected moves, ensuring comprehensive defect detection and processing of the plastic product plate. This process not only improves the efficiency of detection, but also ensures the accuracy of detection, thereby effectively identifying and processing any defects on the plastic product plate to be inspected.

[0041] In an embodiment of the present invention, by starting the drive motor 327, the operation of the drive motor 327 drives the synchronous rotation of the disc 328 and the lever 329. As the lever 329 rotates, it forms a precise fit with the connecting frame 331, the moving rod 330 and the bonding slide 332, so that these components can move back and forth. This reciprocating motion enables the bonding slide 332 to guide the plastic product plate to be inspected to move back and forth longitudinally along the conveying roller 2. At the same time, the detection rod 33 and the ball 34 also perform corresponding detection actions as the plastic product plate to be inspected moves, ensuring comprehensive defect detection and processing of the plastic product plate. This process not only improves the efficiency of detection, but also ensures the accuracy of detection, so that any defects on the plastic product plate to be inspected can be effectively identified and processed.

[0042] Working principle of the new automatic detection device for defects in plastic products:

[0043] Step 1: Place the plastic product plate to be inspected steadily on the conveyor roller 2. Subsequently, the conveyor roller 2 will intermittently move the plastic product plate to be inspected slowly and laterally. Then, two different colored marking materials will be put into the hopper 36 respectively. These marking materials will be accurately placed on both sides of the first partition plate 312. These marking materials will enter the discharge trough 314 on both sides of the second partition plate 315 through the discharge hole 313 of the hopper 36;

[0044] Step 2: The ball 34 slides on the surface of the plastic product plate to be inspected. The function of the ball 34 is to detect the flatness of the surface of the plastic product plate. When the ball 34 contacts the raised or recessed part of the plastic product plate to be inspected, the corresponding action of the control board 32 is triggered. The control board 32 moves up or down according to the movement of the ball 34, thereby pushing the T-shaped rod 318 to move horizontally. The horizontal movement of the T-shaped rod 318 drives the sealing plate 317 to slide horizontally in the rectangular groove 316.

[0045] When a bulge is detected on the surface of the plastic product plate, the first through hole 322 communicates with the discharge trough 314, allowing a marking material of one color to be discharged through this channel, thereby leaving a mark on the bulge portion of the plastic product plate. Conversely, when a depression is detected, the second through hole 323 communicates with the discharge trough 314, allowing a marking material of another color to be discharged through this channel, thereby leaving a mark on the depression portion. The marking material is finally discharged through the telescopic tube 38 and the discharge pipe 310, completing the marking process on the surface of the plastic product plate.

[0046] Step 3. After the conveyor roller 2 intermittently moves the plastic product plate to be inspected laterally, the drive motor 327 is started. The operation of the drive motor 327 drives the synchronous rotation of the disc 328 and the lever 329. As the lever 329 rotates, it forms a precise fit with the connecting frame 331, the moving rod 330 and the bonding slide 332, so that these components can move back and forth. This reciprocating motion enables the bonding slide 332 to guide the plastic product plate to be inspected to move back and forth longitudinally along the conveyor roller 2. At the same time, the detection rod 33 and the ball 34 also perform corresponding detection actions as the plastic product plate to be inspected moves, ensuring comprehensive defect detection and processing of the plastic product plate. This process not only improves the efficiency of detection, but also ensures the accuracy of detection, so that any defects on the plastic product plate to be inspected can be effectively identified and processed.

[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A novel automatic defect detection device for plastic products, comprising a box body (1), wherein a row of conveying rollers (2) are provided in the inner cavity of the box body (1), and the conveying rollers (2) are used for intermittently conveying the plastic product plates to be inspected, and characterized in that: The inner cavity of the box body (1) is provided with a detection component (3) for performing defect detection on the plastic product plate; The detection assembly (3) includes a fixing frame (31) fixedly mounted on the bottom of the inner cavity of the box body (1), the fixing frame (31) being slidably connected to a row of control panels (32) in the vertical direction, a detection rod (33) being fixedly connected to the bottom of the control panel (32), a ball (34) being provided at the bottom of the detection rod (33), and a first damping spring (35) being provided between the control panel (32) and the fixing frame (31).

2. The novel automatic defect detection device for plastic products according to claim 1 is characterized by: A hopper (36) is fixedly installed on the top of the box body (1), and a row of material boxes (37) corresponding to the positions of the control board (32) are fixedly connected to the bottom of the hopper (36). A telescopic tube (38) is connected to the bottom of the material box (37), and a discharge pipe (310) is connected to the other end of the telescopic tube (38). The positions of the discharge pipe (310) and the ball bearing (34) correspond to each other. A support plate (39) is fixedly installed on the discharge pipe (310), and the support plate (39) is fixedly installed on the detection rod (33).

3. The novel automatic defect detection device for plastic products according to claim 2, characterized in that: A row of discharge holes (313) is provided at the bottom of the hopper (36), a first partition plate (312) is fixedly connected to the middle of the inner cavity of the hopper (36), and the first partition plate (312) divides the discharge holes (313) into two parts, left and right.

4. The novel automatic defect detection device for plastic products according to claim 3 is characterized by: The material box (37) is provided with a discharge trough (314) in the vertical direction. The top of the discharge trough (314) is connected to the discharge hole (313), and the bottom of the discharge trough (314) is connected to the telescopic tube (38). The material box (37) is provided with a rectangular groove (316) in the horizontal direction.

5. The novel automatic defect detection device for plastic products according to claim 4, characterized in that: A sealing plate (317) is sealingly and slidably connected in the rectangular groove (316). A T-shaped rod (318) is fixedly connected to one end of the sealing plate (317) close to the control plate (32). The end of the T-shaped rod (318) is slidably connected to the side wall of the control plate (32).

6. The novel automatic defect detection device for plastic products according to claim 5, characterized in that: A fixed plate (319) is fixedly connected to the surface of the T-shaped rod (318), and sliding rods (320) slidably mounted on the material box (37) are fixedly connected to both ends of the fixed plate (319). A second damping spring (321) sleeved on the sliding rod (320) is provided between the fixed plate (319) and the material box (37); a first through hole (322) and a second through hole (323) are opened on the surface of the sealing plate (317), and the first through hole (322) and the second through hole (323) are respectively located on both sides of the discharge trough (314).

7. The novel automatic defect detection device for plastic products according to claim 6, characterized in that: The side wall of the control panel (32) is provided with a vertical surface (324), a first inclined surface (325) and a second inclined surface (326); when the vertical surface (324) contacts the T-shaped rod (318), the ball (34) contacts the surface of the plastic product plate to be detected; when the first inclined surface (325) contacts the T-shaped rod (318), the first inclined surface (325) contacts the convex part of the plastic product plate to be detected; when the second inclined surface (326) contacts the T-shaped rod (318), the second inclined surface (326) contacts the concave part of the plastic product plate to be detected.

8. The novel automatic defect detection device for plastic products according to claim 7, characterized in that: A driving motor (327) is fixedly installed at the bottom of the box body (1), a disc (328) is fixedly connected to the output end of the driving motor (327), a shifting rod (329) is fixedly connected to a position of the disc (328) deviating from the center of the circle, and moving rods (330) are slidably connected to both sides of the box body (1), the inner sections of the two moving rods (330) are fixedly connected to a connecting frame (331), and the shifting rods (329) are slidably connected to the connecting frame (331), and the outer wall of the moving rod (330) is fixedly connected to a fitting slide plate (332), and the inner wall of the fitting slide plate (332) fits and slides with the side wall of the plastic product plate to be inspected.

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