Plastic pipe outer surface detection mechanism for new material detection

Abstract

The invention relates to the technical field of plastic pipe detection, and discloses a plastic pipe outer surface detection mechanism for new material detection, the plastic pipe outer surface detection mechanism comprises a detection box, linear motors are fixedly connected to two sides of the inner wall of the detection box, the moving ends of the linear motors are fixedly connected with moving clamping seats, an infrared detector is arranged above the moving clamping seats, and the infrared detector is arranged above the detection box. The infrared detector is used for emitting infrared light and detecting flaws on the surface of the plastic pipe, the inner surfaces of the two sides of the detection box are rotationally connected with main shafts, and the ends, extending into the detection box, of the main shafts are fixedly connected with connecting shafts. The plastic pipe surface detection device can effectively detect scratches, pits and other defects on the surface of a plastic pipe, the production quality of the plastic pipe is ensured, the connecting shaft drives the plastic pipe to rotate through the arc-shaped clamping plate, then all-around detection on the surface of the pipe is facilitated, and the detection effect is improved.

Description

Technical Field

[0001] This invention relates to the field of plastic pipe testing technology, specifically to a new material testing mechanism for the outer surface of plastic pipes. Background Technology

[0002] Currently, defects on the outer surface of plastic pipes mainly rely on manual visual inspection, which is inefficient and has a high rate of missed detection. Existing automated inspection equipment is difficult to adapt to fix pipes of different sizes, requires time to adjust the clamping components, and lacks internal support for the pipes.

[0003] Patent CN212341040U discloses a device for detecting surface defects in sprinkler irrigation plastic pipes that facilitates positioning. This patent includes a main body for the defect detection device, with support legs fixedly connected to all four sides of its bottom. Through the coordinated use of a positioning plate, a pull rod, and a tension spring, the user can pull the pull rod upwards. The pull rod causes the tension spring to deform under force, which in turn moves the positioning plate and the stabilizing mechanism, placing the pipe to be tested into the first through-hole. Releasing the pull rod causes the tension spring to deform under force, locking the pipe in place with the positioning plate. This solves the problem of existing detection devices requiring even application of the detection reagent and failing to achieve effective positioning when testing plastic pipes. In some cases, frequent disassembly and installation of threaded confinement can cause stripping and other issues. Plastic tubing is prone to rolling, causing friction between the reagent and the machine body, resulting in uneven application and increasing the accuracy of user testing. Although this patent solves the above problems, it still has the drawbacks of difficulty in adaptively fixing tubing of different sizes, requiring time to adjust the clamping components, lacking internal support for the tubing, causing the tubing to bend easily during testing, affecting the accuracy of test data, and having poor adaptability in complex environments. It also has insufficient accuracy in identifying defects such as small scratches and dents, making it difficult to meet the high-standard quality control requirements of new material tubing. Therefore, a new material testing mechanism for the outer surface of plastic tubing is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a new material testing mechanism for the outer surface of plastic pipes, which addresses the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a new material testing mechanism for the outer surface of plastic pipes, comprising: The testing box has linear motors fixedly connected to both sides of its inner wall. The moving end of each linear motor is fixedly connected to a movable bracket. An infrared detector is installed above the movable bracket. The infrared detector is used to emit infrared light and detect surface defects of plastic pipes. A main shaft is rotatably connected to the inner surfaces of both sides of the testing box. A connecting shaft is fixedly connected to one end of the main shaft that extends into the testing box. An internal support device is installed inside the testing box and is used to support the inner wall of the plastic pipe. A shielding device is installed on both the front and rear sides of the testing box. The shielding device is used to shield the external ambient light when testing plastic pipes.

[0006] As a further technical solution, the testing box includes: A slide rail is fixedly connected to the upper and lower sides of the circumferential surface of the connecting shaft. A slider is slidably connected to the inner surface of the slide rail, and an elastic telescopic rod is fixedly connected to the side of the slider near the connecting shaft. A torsion shaft is hinged to the inner surface of the slider. An arc-shaped clamp is fixedly connected to the end of the torsion shaft away from the slider. The arc-shaped clamp is used to clamp the circumferential surface of the tube.

[0007] As a further technical solution, the testing box also includes: A sector-shaped card plate, which is fixedly connected to the right side of the inner surface of the movable card seat; A retaining shaft is fixedly connected to the bottom of the infrared detector, and a fan-shaped insert plate is fixedly connected to the circumferential surface of the retaining shaft; An arc-shaped locking block is slidably connected to the inner surface of the movable locking seat, and an elastic telescopic rod is fixedly connected to the lower surface of the arc-shaped locking block.

[0008] As a further technical solution, the end of the elastic telescopic rod away from the slider is fixedly connected to the circumferential surface of the connecting shaft, a torsion spring is provided at the hinge of the torsion shaft and the slider, the bottom end of the elastic telescopic rod is fixedly connected to the inner surface of the movable card seat, the inner arc surface of the arc-shaped card block abuts against the circumferential surface of the card shaft, the upper surface of the fan-shaped insert plate abuts against the lower surface of the fan-shaped card plate, and the lower surface of the card shaft abuts against the inner surface of the movable card seat.

[0009] As a further technical solution, the internal support device includes: An inner support plate is installed inside the testing box. The inner support plate is used to support the inner wall of the pipe. A convex plate is fixedly connected to the inner arc surface of the inner support plate. Limiting support rods are hinged to both sides of the convex plate. A telescopic cylinder is fixedly connected to the side of the connecting shaft away from the main shaft, and a lead screw is fixedly connected to the free end of the telescopic cylinder.

[0010] As a further technical solution, the internal support device also includes: A fixed shaft is fixedly connected to the end of the lead screw away from the telescopic cylinder; A sleeve shaft is threadedly connected to the circumferential surface of a lead screw, and a movable support rod is hinged to the circumferential surface of the sleeve shaft; An extension rod is fixedly connected to the front side of the telescopic cylinder.

[0011] As a further technical solution, the limiting support rod and the fixed shaft are hinged on their circumferential surfaces, and the movable support rod and the two sides of the convex plate are hinged.

[0012] As a further technical solution, the shielding device includes: The rear top cover is hinged to the inner surface of the rear side of the detection box. The rear top cover is used to quickly open the rear side of the device to adjust the infrared detector and to block the ambient light behind the device. A feeding trough is located at the bottom of the testing box and is used to quickly discharge the tested pipes. A front cover is slidably connected to the front side of the inner wall of the detection box, and the front cover is used to block the ambient light detected by the device.

[0013] As a further technical solution, the shielding device also includes: The upper cover is fixedly connected to the top of the front cover, and the lower surface of the upper cover is fixedly connected to an elastic telescopic rod three. The slot is located on the upper surface of the rear side of the upper cover plate, and a positioning block is engaged on the inner surface of the slot.

[0014] As a further technical solution, the bottom end of the front cover abuts against the bottom surface of the inner wall of the detection box, the upper cover is slidably connected to the inner wall of the detection box, the bottom end of the elastic telescopic rod three is fixedly connected to the bottom surface of the inner wall of the detection box, and the positioning block is fixedly connected to the front end of the extension rod.

[0015] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This new material testing mechanism for the outer surface of plastic pipes uses an infrared detector to inspect the surface of the plastic pipes as it moves. Through the penetrating effect of infrared light, it effectively detects defects such as scratches and pitting on the surface of the plastic pipes, ensuring the production quality of the plastic pipes. The connecting shaft drives the plastic pipe to rotate via an arc-shaped clamp, facilitating comprehensive surface inspection and improving the testing effect. The upper and lower arc-shaped clamps, when in contact with the plastic pipe, can hold it securely, making the inspection more stable. The mechanical stress caused by the arc-shaped clamps in contact with the pipe is corrected by the torsion shaft rotating within the slider, making the clamping more stable. Furthermore, the elastic clamping range allows for the fixing of pipes of different sizes, improving the applicability of the device. Reverse rotation of the fan-shaped insert unlocks the clamping shaft and the infrared detector, improving the ease of installation and disassembly of the infrared detector, facilitating repair and replacement with other types of testing instruments.

[0016] 2. The new material testing mechanism for the outer surface of plastic pipes uses an inner support plate that supports the inner wall of the plastic pipe through a convex plate and a limiting rod. This prevents the plastic pipe from twisting or bending during testing, which would affect the test results and thus improve the accuracy of the test. The arc-shaped clamp is located away from both ends of the pipe, causing the pipe to lose its limiting position and ultimately allowing the plastic pipe to fall to the bottom of the testing box for unloading. This enables the device to quickly proceed to the next test, improving the testing efficiency of the device.

[0017] 3. The new material testing mechanism for the outer surface of plastic pipes expands and moves closer to the inner wall of the pipe, which facilitates support for pipes of different sizes and improves the applicability of the device. When the inner support plate contacts the inner wall of the pipe, it stops moving, causing the sleeve shaft to stop moving. At this time, the screw and sleeve shaft are locked by friction, thus completing the support of the inside of the pipe.

[0018] 4. The new plastic pipe outer surface inspection mechanism can be rotated to close the top cover, and then the front and upper cover can be pushed upwards to block the light sources on both sides of the device, providing a better inspection environment and thus improving the accuracy of the inspection. After the inspection is completed, the top cover can be rotated to open, at which point the infrared detector can be adjusted, and then the front and upper cover can be lowered to facilitate the installation of the next plastic pipe, thus improving the ease of use of the device.

[0019] 5. In this new material testing mechanism for the outer surface of plastic pipes, the upper cover plate is affected by the elastic force of the elastic telescopic rod three, which drives the front cover plate to move upward. This quickly blocks the light source outside the device when the device is started, improving the testing efficiency of the device. After the plastic pipe is released, it falls automatically out of the device from the unloading chute under its own weight. At this time, the front cover plate and the upper cover plate are pushed down, and the pipe has been unloaded, which facilitates continuous testing and further improves the testing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional half-sectional view of the front side of the detection box of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 For the present invention Figure 2 A magnified structural diagram of B in the diagram; Figure 5 This is a three-dimensional half-section diagram of the front side of the movable card holder of the present invention; Figure 6 This is a three-dimensional structural diagram of the front side of the internal support device of the present invention; Figure 7 For the present invention Figure 6A magnified structural diagram of C; Figure 8 This is a three-dimensional half-section diagram of the rear side of the shielding device of the present invention; Figure 9 For the present invention Figure 8 A magnified structural diagram of D in the diagram.

[0021] In the diagram: 1. Detection box; 2. Linear motor; 3. Moving bracket; 4. Infrared detector; 5. Main spindle; 6. Connecting shaft; 7. Internal support device; 8. Shielding device; 9. Slide rail; 10. Elastic telescopic rod one; 11. Slider; 12. Torsion shaft; 13. Arc-shaped clamp; 14. Fan-shaped clamp; 15. Clamping shaft; 16. Fan-shaped insert; 17. Elastic telescopic rod two; 18. Arc-shaped clamping block; 71. Internal support plate; 72. Protruding plate; 73. Limiting support rod; 74. Telescopic cylinder; 75. Lead screw; 76. Fixed shaft; 77. Sleeve shaft; 78. Movable support rod; 79. Extension rod; 81. Rear top cover; 82. Feed chute; 83. Front shield; 84. Upper shield; 85. Elastic telescopic rod three; 86. Slot; 87. Positioning block. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-9One embodiment of the present invention is as follows: a new material testing mechanism for the outer surface of plastic pipes, comprising a testing box 1, linear motors 2 fixedly connected to both sides of the inner wall of the testing box 1, a movable bracket 3 fixedly connected to the moving end of the linear motors 2, an infrared detector 4 disposed above the movable bracket 3, the infrared detector 4 being used to emit infrared light and detect surface defects of the plastic pipes, a main shaft 5 rotatably connected to the inner surfaces of both sides of the testing box 1, a connecting shaft 6 fixedly connected to one end of the main shaft 5 extending into the testing box 1, an inner support device 7 disposed inside the testing box 1, the inner support device 7 being used to support the inner wall of the plastic pipes, and a shielding device 8 disposed on the front and rear sides of the testing box 1, the shielding device 8 being used to shield the plastic pipes during testing. Shielding the external ambient light, the infrared detector 4 inspects the surface of the plastic pipe as it moves. Through the penetrating effect of infrared light, it effectively detects defects such as scratches and pits on the surface of the plastic pipe, ensuring the production quality of the plastic pipe. The connecting shaft 6 drives the plastic pipe to rotate via the arc-shaped clamp 13, facilitating comprehensive inspection of the pipe's surface and improving the inspection effect. The upper and lower arc-shaped clamps 13 clamp the plastic pipe after contact, making the inspection more stable. The inspection box 1 includes a slide rail 9, which is fixedly connected to the upper and lower sides of the circumference of the connecting shaft 6. A slider 11 is slidably connected to the inner surface of the slide rail 9. An elastic telescopic rod 10 is fixedly connected to the side of the slider 11 closest to the connecting shaft 6, allowing it to rotate. Shaft 12 is hinged to the inner surface of slider 11. An arc-shaped clamping plate 13 is fixedly connected to the end of shaft 12 away from slider 11. The arc-shaped clamping plate 13 is used to clamp the circumferential surface of the pipe. The detection box 1 also includes a fan-shaped clamping plate 14, which is fixedly connected to the right side of the inner surface of the movable clamping seat 3. A clamping shaft 15 is fixedly connected to the bottom end of the infrared detector 4. A fan-shaped insert plate 16 is fixedly connected to the circumferential surface of the clamping shaft 15. An arc-shaped clamping block 18 is slidably connected to the inner surface of the movable clamping seat 3. An elastic telescopic rod 17 is fixedly connected to the lower surface of the arc-shaped clamping block 18. The end of the elastic telescopic rod 10 away from slider 11 is fixedly connected to the circumferential surface of the connecting shaft 6. A torsion spring is provided at the hinge point between shaft 12 and slider 11. The bottom end of 7 is fixedly connected to the inner surface of the movable card seat 3. The inner arc surface of the arc-shaped card block 18 abuts against the circumferential surface of the card shaft 15. The upper surface of the fan-shaped insert plate 16 abuts against the lower surface of the fan-shaped card plate 14. The lower surface of the card shaft 15 abuts against the inner surface of the movable card seat 3. After the arc-shaped clamping plate 13 contacts the pipe, it is affected by mechanical stress and is corrected by rotating within the slider 11 through the torsion shaft 12, making the clamping more stable. Moreover, through the elastic range clamping, it can fix pipes of different sizes, improving the applicability of the device. By rotating the fan-shaped insert plate 16 in the opposite direction, the card shaft 15 and the infrared detector 4 can be unlocked, improving the convenience of installing and disassembling the infrared detector 4, making it easier to repair and replace it with other types of detection instruments.

[0024] Working principle: The plastic pipe is placed between the inspection box 1 and the arc-shaped clamp 13. The linear motor 2 is started, which drives the moving bracket 3 to move back and forth. The moving bracket 3 drives the infrared detector 4 to move back and forth. As the infrared detector 4 moves, it inspects the surface of the plastic pipe. Through the penetrating effect of infrared light, it can effectively detect defects such as scratches and pits on the surface of the plastic pipe, ensuring the production quality of the plastic pipe. The main shaft 5 is started, and the rotation of the main shaft 5 drives the connecting shaft 6 to rotate. The connecting shaft 6 passes through the arc-shaped clamp. 13 drives the plastic pipe to rotate, thus facilitating comprehensive inspection of the pipe's surface and improving the inspection effect. After the plastic pipe is placed between the arc-shaped clamps 13, the slider 11 slides within the slide rail 9 and approaches the connecting shaft 6 under the influence of the elastic tension of the elastic telescopic rod 10. The slider 11 then drives the arc-shaped clamps 13 to approach the plastic pipe via the torsion shaft 12. When the upper and lower arc-shaped clamps 13 are in contact with the plastic pipe, they can clamp it, making the inspection more stable. After the arc-shaped clamps 13 come into contact with the pipe, they are affected by mechanical stress... The torsion shaft 12 rotates and corrects within the slider 11, making the clamping more stable. Furthermore, the elastic clamping range allows for the fixing of pipes of different sizes, improving the device's applicability. The fan-shaped insert 16 is tilted to the left of the clamping shaft 15. Then, the infrared detector 4 is inserted into the movable clamping seat 3 through the clamping shaft 15 and the fan-shaped insert 16. After the fan-shaped insert 16 is inserted into the movable clamping seat 3, it presses down the arc-shaped clamping block 18, causing it to retract into the bottom of the movable clamping seat 3. At this point, rotating the infrared detector 4 and the clamping shaft 15 causes the clamping shaft 15 to drive the fan-shaped insert 16 to deflect to the right. Insert it below the arc-shaped clamp 13. At this time, the arc-shaped locking block 18 loses its limit and is ejected upward by the elastic force of the elastic telescopic rod 17, abutting against the circumferential surface of the locking shaft 15. This causes the locking shaft 15 and the fan-shaped insert 16 to quickly lock between the arc-shaped locking block 18 and the arc-shaped clamp 13. Conversely, pressing the arc-shaped locking block 18 downward and then rotating the fan-shaped insert 16 in the opposite direction can unlock the locking shaft 15 and the infrared detector 4, improving the convenience of installing and removing the infrared detector 4, making it easier to repair and replace it with other types of detection instruments.

[0025] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the internal support device 7 includes an internal support plate 71, which is disposed inside the testing box 1. The internal support plate 71 is used to support the inner wall of the pipe. A convex plate 72 is fixedly connected to the inner arc surface of the internal support plate 71. Limiting support rods 73 are hinged to both sides of the convex plate 72. A telescopic cylinder 74 is fixedly connected to the side of the connecting shaft 6 away from the main shaft 5. A lead screw 75 is fixedly connected to the free end of the telescopic cylinder 74. The internal support plate 71 supports the inner wall of the plastic pipe through the support of the convex plate 72 and the limiting support rods 73, preventing the plastic pipe from twisting and bending during testing, which would affect the test results, thereby improving the accuracy of the test. The arc-shaped clamp 13 is away from both ends of the pipe, causing the pipe to lose its limiting position, and finally causing the plastic pipe to fall to the bottom of the testing box 1 to complete the unloading. The device can quickly perform the next inspection, improving the inspection efficiency. The inner support device 7 also includes a fixed shaft 76, which is fixedly connected to the end of the lead screw 75 away from the telescopic cylinder 74. The sleeve shaft 77 is threadedly connected to the circumferential surface of the lead screw 75. The circumferential surface of the sleeve shaft 77 is hinged to a movable support rod 78. The extension rod 79 is fixedly connected to the front side of the telescopic cylinder 74. The limiting support rod 73 is hinged to the circumferential surface of the fixed shaft 76. The movable support rod 78 is hinged to both sides of the convex plate 72. The inner support plate 71 expands and moves closer to the inner wall of the pipe, which facilitates the support of pipes of different sizes and improves the applicability of the device. When the inner support plate 71 contacts the inner wall of the pipe, it stops moving, causing the sleeve shaft 77 to stop moving. At this time, the lead screw 75 and the sleeve shaft 77 are locked by friction, completing the support of the inside of the pipe.

[0026] Working principle: After the plastic pipe is clamped by the arc-shaped clamping plate 13, the inner support plate 71 is located in the hollow part of the plastic pipe and fits against its inner wall. The inner support plate 71, supported by the protruding plate 72 and the limiting support rod 73, supports the inner wall of the plastic pipe, preventing the plastic pipe from twisting or bending during testing and affecting the test results, thereby improving the accuracy of the test. When the test is completed and the pipe needs to be disassembled, the telescopic cylinder 74 is activated. The telescopic cylinder 74 drives the lead screw 75 to retract towards the side closer to the connecting shaft 6, thereby moving the arc-shaped clamping plate 13 away from both ends of the pipe, causing the pipe to lose its limiting position, and finally allowing the plastic pipe to fall to the bottom of the test box 1 to complete the unloading. This allows the device to quickly perform the next test, improving the efficiency of the device. To improve detection efficiency, when the connecting shaft 6 rotates, it drives the telescopic cylinder 74 to rotate. The telescopic cylinder 74 drives the lead screw 75 to rotate. When the lead screw 75 rotates, it drives the sleeve shaft 77, which is limited by the movable support rod 78, to move closer to the fixed shaft 76. When the sleeve shaft 77 moves closer to the fixed shaft 76, it provides a thrust to the bottom end of the movable support rod 78, thereby causing the movable support rod 78 to stand up. During the process of the movable support rod 78 standing up, it drives the convex plate 72 and the inner support plate 71 to expand and move closer to the inner wall of the pipe, which facilitates the support of pipes of different sizes and improves the applicability of the device. When the inner support plate 71 contacts the inner wall of the pipe, it stops moving, causing the sleeve shaft 77 to stop moving. At this time, the lead screw 75 and the sleeve shaft 77 are locked by friction, completing the support of the inside of the pipe.

[0027] Please see Figures 1-9 Based on the above embodiments, in another embodiment of the present invention, the shielding device 8 includes a rear top cover 81, which is hinged to the inner rear surface of the detection box 1. The rear top cover 81 is used to quickly open the rear side of the device to adjust the infrared detector 4 and to shield the ambient light behind the device. A discharge chute 82 is opened at the bottom of the detection box 1 and is used to quickly discharge the tested pipes from the device. A front cover 83 is slidably connected to the front side of the inner wall of the detection box 1 and is used to shield the ambient light detected by the device. Rotating and closing the rear top cover 81, and then pushing the front cover 83 and the upper cover 84 upward, will shield the light sources on the front and rear sides of the device, providing a better detection environment and thus improving the accuracy of the detection. After the detection is completed, rotating and opening the rear top cover 81 allows for adjustment of the infrared detector 4. Then, lowering the front cover 83 and the upper cover 84 facilitates the installation of the next plastic pipe, improving the ease of use of the device. The shielding device 8 also includes an upper shield 84, which is fixedly connected to the top of the front shield 83. An elastic telescopic rod 85 is fixedly connected to the lower surface of the upper shield 84. A slot 86 is opened on the upper rear side of the upper shield 84, and a positioning block 87 is engaged on the inner surface of the slot 86. The bottom end of the front shield 83 abuts against the bottom surface of the inner wall of the detection box 1. The upper shield 84 is slidably connected to the inner wall of the detection box 1. The bottom end of the elastic telescopic rod 85 is fixedly connected to the bottom surface of the inner wall of the detection box 1. The positioning block 87 is fixedly connected to the front end of the extension rod 79. The upper shield 84 is driven by the elastic force of the elastic telescopic rod 85 to move the front shield 83 upward, thereby quickly blocking the light source outside the device when the device is started, improving the detection efficiency of the device. After the plastic pipe is released, it falls automatically out of the device from the unloading chute 82 under its own weight. At this time, the front shield 83 and the upper shield 84 are pushed down, and the pipe has been unloaded, which facilitates continuous detection and further improves the detection efficiency.

[0028] Working principle: When pipe testing is required, the rear top cover 81 is rotated and closed, and the front cover 83 and upper cover 84 are pushed upwards, thus blocking the light sources on both sides of the device and providing a better testing environment, thereby improving the accuracy of the test. After the test is completed, the rear top cover 81 is rotated open, at which point the infrared detector 4 can be adjusted. Then, the front cover 83 and upper cover 84 are lowered to facilitate the installation of the next plastic pipe, improving the ease of use of the device. When testing plastic pipes, the main shaft 5 is started, causing it to rotate counterclockwise. The main shaft 5 drives the telescopic cylinder 74 and the extension rod 79 to rotate through the connecting shaft 6. 9. Then, the positioning block 87 rotates counterclockwise and is pulled out of the slot 86, causing the upper cover 84 to lose its limit. After the upper cover 84 loses its limit, it moves upward under the influence of the elastic force of the elastic telescopic rod 85 and aligns with the top of the detection box 1. When the upper cover 84 moves upward, it drives the front cover 83 to move upward, thereby quickly blocking the light source outside the device when the device is started, improving the detection efficiency of the device. After the plastic pipe is released, it falls automatically out of the device from the bottom of the detection box 1 through the unloading chute 82 under the influence of gravity. At this time, the front cover 83 and the upper cover 84 are pushed down, and the pipe has been unloaded, which facilitates continuous detection and further improves the detection efficiency.

[0029] This invention provides a novel material testing mechanism for the outer surface of plastic pipes. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A new material testing mechanism for the outer surface of plastic pipes, characterized in that, include: The test box (1) has linear motors (2) fixedly connected to both sides of its inner wall. The moving end of the linear motor (2) is fixedly connected to a moving bracket (3). An infrared detector (4) is set above the moving bracket (3). The infrared detector (4) is used to emit infrared light and detect defects on the surface of the plastic pipe. The inner surfaces of both sides of the test box (1) are rotatably connected to a main shaft (5). One end of the main shaft (5) that extends into the test box (1) is fixedly connected to a connecting shaft (6). An inner support device (7) is installed inside the testing box (1) and is used to support the inner wall of the plastic pipe. A shielding device (8) is provided on the front and rear sides of the test box (1). The shielding device (8) is used to shield the external ambient light when testing plastic pipes.

2. The new material testing mechanism for the outer surface of plastic pipes according to claim 1, characterized in that: The detection box (1) includes: The slide rail (9) is fixedly connected to the upper and lower sides of the circumferential surface of the connecting shaft (6). The inner surface of the slide rail (9) is slidably connected to a slider (11). An elastic telescopic rod (10) is fixedly connected to the side of the slider (11) near the connecting shaft (6). A torsion shaft (12) is hinged to the inner surface of the slider (11). An arc-shaped clamp (13) is fixedly connected to one end of the torsion shaft (12) away from the slider (11). The arc-shaped clamp (13) is used to clamp the circumferential surface of the pipe.

3. The new material testing mechanism for the outer surface of plastic pipes according to claim 2, characterized in that: The detection box (1) also includes: A fan-shaped card plate (14) is fixedly connected to the right side of the inner surface of the movable card seat (3); A retaining shaft (15) is fixedly connected to the bottom of the infrared detector (4), and a fan-shaped insert plate (16) is fixedly connected to the circumferential surface of the retaining shaft (15). An arc-shaped locking block (18) is slidably connected to the inner surface of the movable locking seat (3), and an elastic telescopic rod (17) is fixedly connected to the lower surface of the arc-shaped locking block (18).

4. The new material testing mechanism for the outer surface of plastic pipes according to claim 3, characterized in that: The end of the first elastic telescopic rod (10) away from the slider (11) is fixedly connected to the circumferential surface of the connecting shaft (6). A torsion spring is provided at the hinge of the torsion shaft (12) and the slider (11). The bottom end of the second elastic telescopic rod (17) is fixedly connected to the inner surface of the movable card seat (3). The inner arc surface of the arc-shaped card block (18) abuts against the circumferential surface of the card shaft (15). The upper surface of the fan-shaped insert (16) abuts against the lower surface of the fan-shaped card plate (14). The lower surface of the card shaft (15) abuts against the inner surface of the movable card seat (3).

5. The new material testing mechanism for the outer surface of plastic pipes according to claim 4, characterized in that: The internal support device (7) includes: An inner support plate (71) is installed inside the testing box (1). The inner support plate (71) is used to support the inner wall of the pipe. A protruding plate (72) is fixedly connected to the inner arc surface of the inner support plate (71). Limiting support rods (73) are hinged on both sides of the protruding plate (72). Telescopic cylinder (74) is fixedly connected to the side of the connecting shaft (6) away from the main shaft (5), and a lead screw (75) is fixedly connected to the free end of the telescopic cylinder (74).

6. The new material testing mechanism for the outer surface of plastic pipes according to claim 5, characterized in that: The internal support device (7) also includes: A fixed shaft (76) is fixedly connected to the end of the lead screw (75) away from the telescopic cylinder (74); A sleeve shaft (77) is threaded to the circumferential surface of a lead screw (75), and a movable support rod (78) is hinged to the circumferential surface of the sleeve shaft (77). Extension rod (79) is fixedly connected to the front side of telescopic cylinder (74).

7. The new material testing mechanism for the outer surface of plastic pipes according to claim 6, characterized in that: The limiting support rod (73) and the fixed shaft (76) are hinged on the circumferential surface, and the movable support rod (78) and the two sides of the convex plate (72) are hinged.

8. The new material testing mechanism for the outer surface of plastic pipes according to claim 7, characterized in that: The shielding device (8) includes: The rear top cover (81) is hinged to the inner surface of the rear side of the detection box (1). The rear top cover (81) is used to quickly open the rear side of the device to adjust the infrared detector (4) and to block the ambient light on the rear side of the device. The material discharge trough (82) is located at the bottom of the inspection box (1) and is used to quickly discharge the inspected pipes. A front cover (83) is slidably connected to the front side of the inner wall of the detection box (1). The front cover (83) is used to block the ambient light detected by the device.

9. The new material testing mechanism for the outer surface of plastic pipes according to claim 8, characterized in that: The shielding device (8) further includes: The upper cover (84) is fixedly connected to the top of the front cover (83), and the lower surface of the upper cover (84) is fixedly connected to an elastic telescopic rod (85). The slot (86) is located on the upper surface of the rear side of the upper cover (84), and the inner surface of the slot (86) is fitted with a positioning block (87).

10. The new material testing mechanism for the outer surface of plastic pipes according to claim 9, characterized in that: The bottom end of the front cover (83) abuts against the bottom surface of the inner wall of the test box (1), the upper cover (84) is slidably connected to the inner wall of the test box (1), the bottom end of the elastic telescopic rod (85) is fixedly connected to the bottom surface of the inner wall of the test box (1), and the positioning block (87) is fixedly connected to the front end of the extension rod (79).

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