A self-repairing tire inner coating peeling strength testing device

Abstract

The present invention belongs to the technical field of tire detection, and discloses a self-repairing tire inner coating peeling strength testing device, including a base and a support plate, and also including: a heating plate; a clamping mechanism, including a first electric telescopic rod, the output shaft of the first electric telescopic rod is fixedly installed with an extrusion disk for fixing the tire on the base; a detection mechanism, including a support ring, the upper end face of the support ring is installed with a first round roller and a second round roller, and a torque sensor is installed inside the first round roller, a third round rod is installed at the center of the support ring, and an extrusion block is installed on the outer wall of the third round rod; a knocking mechanism, which is arranged on the outer wall of the extrusion disk, includes a plurality of sliders, a second round rod and two springs are installed on one side of the slider, and the two springs are located on both sides of the second round rod, and a knocking rod is installed on the lower end face of the second round rod. The present invention solves the problem that the existing device cannot judge whether the coating is torn or partially peeled off, resulting in inaccurate test results and the inability to test tires at different temperatures.

Description

Technical Field

[0001] The invention relates to the technical field of tire detection, in particular to a device for testing the peeling strength of inner coating of a self-repairing tire. Background Art

[0002] Self-repairing tires are mainly coated with a layer of viscous rubber sealant on the inside of the tire. The sealant has airtightness, balanced fluidity and strong viscosity. When the tread is punctured by a metal foreign body, the sealant will wrap the metal foreign body, isolating it from the inside of the tire and preventing gas from leaking from the gap. When the punctured object is pulled out of the tire body, the sealant has fluidity and can quickly enter the punctured hole, realizing the self-repair of the tire, ensuring the safety and stability of driving, and ensuring the air pressure inside the tire. At the same time, in order to ensure the factory quality of self-repairing tires, it is necessary to randomly select some finished products for quality inspection.

[0003] The Chinese patent disclosed "A self-repairing tire inner coating peeling strength testing device" with application number 202310711953.8, including a power box, the interior of the power box is hollow, a reduction motor is fixedly connected to the inner side of the power box, and a test rod is fixedly connected to the output end of the reduction motor. A support frame for fixing the tire is provided on one side of the power box, and a through hole is opened on the side of the power box close to the support frame. The test rod passes through the through hole and is located in the middle of the support frame.

[0004] The device can detect defective products through a torque measuring instrument, but when peeling off the coating on the inner side of the tire, there is partial peeling. Since the coating is on the inner side of the tire, it is impossible to judge whether the coating is completely peeled off by the naked eye, which will cause inaccurate test results. In addition, the device cannot test the peeling strength at different temperatures. Summary of the invention

[0005] The purpose of the present invention is to provide a self-repairing tire inner coating peeling strength testing device, which solves the problem that the existing device cannot determine whether the coating is torn or partially peeled off, resulting in inaccurate test results and inability to test tires at different temperatures.

[0006] To achieve the above object, the present invention provides the following technical solution: a self-repairing tire inner coating peeling strength testing device, comprising a base, a support plate located above the base, and further comprising:

[0007] A heating plate, arranged inside the base, for heating the tire;

[0008] The clamping mechanism is arranged below the support plate and comprises a first electric telescopic rod, the output shaft of which is fixedly mounted with a squeezing plate for fixing the tire on the base;

[0009] The detection mechanism is arranged below the base, and comprises a support ring, wherein a first round roller and a second round roller are mounted on the upper end surface of the support ring, and a torque sensor is mounted inside the first round roller, and a third round rod is mounted at the center of the support ring, and an extrusion block is mounted on the outer wall of the third round rod; when the first round roller and the second round roller rotate, the coating of the tire is peeled off, and the torque sensor detects the torque change;

[0010] The knocking mechanism is arranged on the outer wall of the extrusion disk and includes a plurality of sliders, a second round rod and two springs are installed on one side of the slider, and the two springs are located on both sides of the second round rod, and a knocking rod is installed on the lower end surface of the second round rod; when the coating of the tire is peeled off, the support ring drives the extrusion block to rotate in the coating peeling direction through the third round rod, and when the extrusion block rotates, the second round rod and the spring are first squeezed through the slider, and the second round rod drives the knocking rod away from the tire. When the spring is extended, it drives the slider to move in the opposite direction, and the slider drives the knocking rod to move through the second round rod to knock the tire.

[0011] Preferably, a plurality of slide grooves are provided on the lower end surface of the extrusion plate, and the inner wall of the slide groove is slidably connected to the slider.

[0012] Preferably, a second electric telescopic rod is rotatably mounted on the lower end surface of the support ring, a support frame is mounted on a side of the second electric telescopic rod away from the support ring, and the support frame is mounted on the bottom wall of the base.

[0013] Preferably, a first gear and a second gear are fixedly mounted on the lower end surfaces of the first round roller and the second round roller, respectively, and the first gear and the second gear are rotatably mounted on a support ring.

[0014] Preferably, a servo motor is installed on the lower end surface of the support ring, and the output shaft of the servo motor passes through the support ring and is fixedly connected to the second gear.

[0015] Preferably, a support rod is installed on the side of the slider away from the second round rod, and a roller is installed on the side of the support rod away from the slider.

[0016] Preferably, a support disc is installed on the lower end surface of the support plate, and a plurality of extrusion rods are evenly installed on the lower end surface of the support disc along its circumference.

[0017] Preferably, a first round rod is rotatably mounted on the outer wall of the second round rod away from the sliding block, and the outer wall of the first round rod abuts against the extrusion rod.

[0018] Preferably, the spring is mounted on the extrusion disk at a side away from the slider.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with a heating plate, which can heat the tire and test the peeling strength of the tire coating at different temperatures;

[0021] The present invention is provided with a detection mechanism. When the first round roller and the second round roller tear the coating in the tire, the torque sensor in the first round roller will measure the torque change. During the tearing process of the first round roller and the second round roller, due to the tensile force of the coating, the first round roller and the second round roller will drive the support ring to rotate along with the tearing position of the coating, so that the peeling angle of the coating remains unchanged, thereby reducing the influence on the test result.

[0022] The present invention is provided with a knocking mechanism. When the extrusion block squeezes the roller, the roller drives the support rod to move to a side away from the extrusion block, and the support rod drives the slider to move. While the slider compresses the spring, it drives the second round rod to move. The second round rod is away from the outer wall of the tire. As the coating is peeled off, the extrusion block rotates and no longer squeezes the roller. At this time, the spring stretches out, driving the slider to move to one side of the extrusion block. The slider drives the knocking rod to move through the second round rod, and the knocking rod knocks the outer wall of the tire to generate a sound. Since the sound generated in the area after the coating is completely peeled off is different from the sound generated in the local peeling area, the data of the local peeling area can be eliminated to prevent inaccurate test results.

[0023] The invention is provided with an extrusion rod. When the first round rod slides downward on the extrusion rod, the first round rod reaches the slope position of the extrusion rod, the spring will extend, and the slider will move toward one side of the roller. At the same time, the second round rod has dropped to the outside of the tire, and the second round rod will abut against the outer wall of the tire. During this process, the second round rod can abut against tires of different sizes, and the spring will be adjusted according to the tire size, so that tires of different sizes can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0026] Figure 3 It is a schematic diagram of the support plate of the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram from another perspective;

[0028] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0029] Figure 6 for Figure 5 Schematic diagram of removing the squeeze plate;

[0030] Figure 7 It is a schematic diagram of the detection mechanism of the present invention;

[0031] Figure 8 for Figure 7 Schematic diagram from another perspective.

[0032] In the figure: 1. support plate; 2. base; 3. first electric telescopic rod; 4. support plate; 5. tire; 6. extrusion rod; 7. extrusion plate; 8. roller; 9. support rod; 10. slide groove; 11. first round rod; 12. second round rod; 1201. knocking rod; 13. slider; 14. spring; 15. third round rod; 16. extrusion block; 17. first round roller; 18. first gear; 19. second gear; 20. second round roller; 21. support ring; 22. support frame; 23. second electric telescopic rod; 24. servo motor. DETAILED DESCRIPTION

[0033] See also Figures 1 to 8 The present invention provides a technical solution: a self-repairing tire inner coating peeling strength testing device, comprising a base 2, a support plate 1 located above the base 2, and further comprising:

[0034] A heating plate (not shown in the figure), disposed inside the base 2, for heating the tire 5;

[0035] The clamping mechanism is arranged below the support plate 1 and comprises a first electric telescopic rod 3, wherein an output shaft of the first electric telescopic rod 3 is fixedly mounted with a squeezing plate 7 for fixing the tire 5 on the base 2;

[0036] The detection mechanism is arranged below the base 2, and includes a support ring 21, the upper end surface of which is mounted with a first round roller 17 and a second round roller 20, and a torque sensor is mounted inside the first round roller 17, a third round rod 15 is mounted at the center of the support ring 21, and an extrusion block 16 is mounted on the outer wall of the third round rod 15; when the first round roller 17 and the second round roller 20 rotate, the coating of the tire 5 is peeled off, and the torque sensor detects the torque change;

[0037] The knocking mechanism is arranged on the outer wall of the extrusion plate 7, and includes a plurality of sliders 13. A second round rod 12 and two springs 14 are installed on one side of the slider 13, and the two springs 14 are located on both sides of the second round rod 12. A knocking rod 1201 is installed on the lower end surface of the second round rod 12. When the coating of the tire 5 is peeled off, the support ring 21 drives the extrusion block 16 to rotate in the coating peeling direction through the third round rod 15. When the extrusion block 16 rotates, the second round rod 12 and the spring 14 are first squeezed through the slider 13, and the second round rod 12 drives the knocking rod 1201 away from the tire 5. When the spring 14 is extended, it drives the slider 13 to move in the opposite direction. The slider 13 drives the knocking rod 1201 to move through the second round rod 12 to knock the tire 5.

[0038] Further, such as Figure 6As shown, the lower end surface of the extrusion plate 7 is provided with a plurality of slide grooves 10, and the inner wall of the slide groove 10 is slidably connected with a slider 13; the slider 13 can slide left and right in the slide groove 10;

[0039] Further, such as Figure 7 and Figure 8 As shown, the lower end surface of the support ring 21 is rotatably mounted with a second electric telescopic rod 23, and a support frame 22 is mounted on the side of the second electric telescopic rod 23 away from the support ring 21, and the support frame 22 is mounted on the bottom wall of the base 2; the second electric telescopic rod 23 drives the support ring 21 to rise or fall;

[0040] Further, such as Figure 7 and Figure 8 As shown, the first gear 18 and the second gear 19 are fixedly installed on the lower end surfaces of the first roller 17 and the second roller 20 respectively, and the first gear 18 and the second gear 19 are rotatably installed on the support ring 21, and the servo motor 24 is installed on the lower end surface of the support ring 21. The output shaft of the servo motor 24 penetrates the support ring 21 and is fixedly connected with the second gear 19, and the first gear 18 and the second gear 19 are meshed with each other; the servo motor 24 drives the second gear 19 to rotate, the second gear 19 drives the first gear 18 and the second roller 20 to rotate, the first gear 18 drives the first roller 17 to rotate, and the first roller 17 and the second roller 20 peel off the coating of the tire 5;

[0041] Further, such as Figure 4 and Figure 5 As shown, a support rod 9 is installed on the side of the slider 13 away from the second round rod 12, and a roller 8 is installed on the side of the support rod 9 away from the slider 13; the roller 8 reduces the friction of the friction extrusion block 16;

[0042] Further, such as Figure 3 As shown, a support plate 4 is installed on the lower end surface of the support plate 1, and a plurality of extrusion rods 6 are evenly installed on the lower end surface of the support plate 4 along its circumference, and the outer wall of the extrusion rod 6 has a slope;

[0043] Further, such as Figure 6 As shown, the first round rod 11 is rotatably mounted on the outer wall of the second round rod 12 away from the slider 13, and the outer wall of the first round rod 11 abuts against the extrusion rod 6; when the first round rod 11 slides on the outer wall of the extrusion rod 6, it drives the second round rod 12 to move;

[0044] Further, such as Figure 6 As shown, the spring 14 is mounted on the pressure disc 7 at a side away from the slide block 13 .

[0045] Working principle: Step 1: Place the tire 5 on the base 2, then adjust the position of the tire 5 to make it centered, then connect the external power supply and controller, tear open the coating on the inner wall of the tire 5, and control the second electric telescopic rod 23 to extend through the controller, the second electric telescopic rod 23 drives the support ring 21 to rise, the support ring 21 drives the servo motor 24, the first round roller 17 and the second round roller 20 to rise, and when the first round roller 17 and the second round roller 20 are flush with the inner coating of the tire 5, stop, and then control the servo motor 24 to rotate through the controller, the servo motor 24 drives the second gear 19 to rotate, the second gear 19 drives the first gear 18 and the second round roller 20 to rotate, the first gear 18 drives the first round roller 17 to rotate, at this time, put the coating between the first round roller 17 and the second round roller 20, and then control the servo motor 24 to stop rotating;

[0046] Step 2: Control the first electric telescopic rod 3 to descend through the controller, the first electric telescopic rod 3 drives the extrusion plate 7 to descend, the extrusion plate 7 drives the slider 13 to descend through the slide groove 10, the slider 13 drives the support rod 9 and the second round rod 12 to descend, the second round rod 12 drives the knocking rod 1201 and the first round rod 11 to descend, at this time the first round rod 11 is squeezed by the extrusion rod 6, as the first round rod 11 descends, the first round rod 11 reaches the slope position of the extrusion rod 6, the spring 14 will be extended, the slider 13 moves toward the side of the roller 8, at the same time, the second round rod 12 has been dropped to the outside of the tire 5, the second round rod 12 will abut on the outer wall of the tire 5, in this process, the second round rod 12 can abut on tires 5 of different sizes, the spring 14 will be adjusted according to the size of the tire 5, as the extrusion plate 7 descends, the extrusion plate 7 will abut on the upper end of the tire 5 to fix the tire 5;

[0047] Step 3: Start the servo motor 24 again through the controller. At this time, the first round roller 17 and the second round roller 20 will tear the coating in the tire 5. The torque sensor in the first round roller 17 will measure the torque change. In the tearing process of the first round roller 17 and the second round roller 20, due to the tension of the coating, the first round roller 17 and the second round roller 20 will drive the support ring 21 to rotate following the tearing position of the coating. The support ring 21 drives the extrusion block 16 to rotate through the third round rod 15. The extrusion block 16 squeezes the roller 8. The roller 8 drives the support rod 9 to move away from the extrusion block 16. The support rod 9 drives the slider 13 to move. While the slider 13 compresses the spring 14, it drives the second round rod 12 to move. The second round rod 12 is far away From the outer wall of the tire 5, as the coating is peeled off, the extrusion block 16 rotates and no longer squeezes the roller 8. At this time, the spring 14 stretches out, driving the slider 13 to move to one side of the extrusion block 16. The slider 13 drives the knocking rod 1201 to move through the second round rod 12, and the knocking rod 1201 knocks the outer wall of the tire 5 to generate a sound. Then, an external sound analyzer (which is a prior art and not shown in the figure) analyzes the sound to quickly know whether the coating has been partially peeled off. If a separate record is made, as the coating is completely peeled off, the strength test data of the coating when it is completely peeled off can be obtained, and the strength test data when it is partially peeled off can also be obtained. After removing the data when the local peeling occurs, it can be known whether the tire 5 is qualified;

[0048] Step 4: During peeling, if it is necessary to test the peeling strength of the tire 5 at different temperatures, the tire 5 only needs to be heated by a heating plate;

[0049] Step 5: After the test of the tire 5 is completed, the first electric telescopic rod 3 is controlled to rise by the controller, and the first electric telescopic rod 3 drives the extrusion plate 7 to rise. The extrusion plate 7 drives the slider 13 to rise through the slide groove 10, and the slider 13 drives the second round rod 12 to rise. The second round rod 12 drives the knocking rod 1201 and the first round rod 11 to rise, and the knocking rod 1201 is away from the tire 5. At this time, the first round rod 11 will be squeezed again by the slope of the extrusion rod 6, and the first round rod 11 moves to the side away from the roller 8. The first round rod 11 drives the knocking rod 1201 to move through the second round rod 12, away from the tire 5. When the first electric telescopic rod 3 is completely retracted and stops, the second electric telescopic rod 23 is retracted, driving the support ring 21 to descend, and the support ring 21 drives the first round roller 17 and the second round roller 20 to descend, so that they are away from the tire 5, so as to facilitate the removal of the tire 5.

[0050] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-repairing tire inner coating peeling strength testing device, comprising a base (2), a support plate (1) located above the base (2), characterized in that: Also includes: A heating plate, arranged inside the base (2) and used for heating the tire (5); The clamping mechanism is arranged below the support plate (1), and comprises a first electric telescopic rod (3). The output shaft of the first electric telescopic rod (3) is fixedly mounted with an extrusion plate (7) for fixing the tire (5) on the base (2). The lower end surface of the extrusion plate (7) is provided with a plurality of slide grooves (10). The inner wall of the slide groove (10) is slidably connected to a slider (13). The lower end surface of the support plate (1) is mounted with a support plate (4). The lower end surface of the support plate (4) is evenly mounted with a plurality of extrusion rods (6) along its circumference. The outer wall of the extrusion rod (6) has a slope. The detection mechanism is arranged below the base (2), and comprises a support ring (21). A first round roller (17) and a second round roller (20) are mounted on the upper end surface of the support ring (21), and a torque sensor is mounted inside the first round roller (17). A third round rod (15) is mounted at the center of the support ring (21), and an extrusion block (16) is mounted on the outer wall of the third round rod (15). When the first round roller (17) and the second round roller (20) rotate, the coating of the tire (5) is peeled off, and the torque sensor detects the torque change. The knocking mechanism is arranged on the outer wall of the extrusion plate (7), and comprises a plurality of sliders (13). A second round rod (12) and two springs (14) are installed on one side of the slider (13), and the two springs (14) are located on both sides of the second round rod (12). The spring (14) is installed on the extrusion plate (7) at the side away from the slider (13). A knocking rod (1201) is installed on the lower end surface of the second round rod (12). A support rod (9) is installed on the side of the slider (13) away from the second round rod (12). A roller (8) is installed on the side of the support rod (9) away from the slider (13). A first round rod (11) is rotatably installed on the outer wall of the side of the second round rod (12) away from the slider (13), and the outer wall of the first round rod (11) abuts against the extrusion rod (6); when the tire When the coating of the tire (5) is peeled off, the support ring (21) drives the extrusion block (16) to rotate in the coating peeling direction through the third round rod (15). When the extrusion block (16) rotates, the second round rod (12) and the spring (14) are first squeezed through the slider (13). The second round rod (12) drives the knocking rod (1201) away from the tire (5). The second round rod (12) abuts against tires of different sizes. The spring (14) is adjusted according to the size of the tire, so that tires of different sizes can be tested. As the coating is peeled off, the extrusion block (16) rotates and no longer squeezes the roller. At this time, the spring (14) extends and drives the slider (13) to move in the opposite direction. The slider (13) drives the knocking rod (1201) to move through the second round rod (12) to knock the tire (5).

2. The device for testing the peeling strength of the inner coating of a self-repairing tire according to claim 1, characterized in that: A second electric telescopic rod (23) is rotatably mounted on the lower end surface of the support ring (21); a support frame (22) is mounted on the side of the second electric telescopic rod (23) away from the support ring (21); and the support frame (22) is mounted on the bottom wall of the base (2).

3. The device for testing the peeling strength of the inner coating of a self-repairing tire according to claim 1, characterized in that: A first gear (18) and a second gear (19) are fixedly mounted on the lower end surfaces of the first round roller (17) and the second round roller (20), respectively. The first gear (18) and the second gear (19) are rotatably mounted on a support ring (21).

4. The device for testing the peeling strength of the inner coating of a self-repairing tire according to claim 3, characterized in that: A servo motor (24) is mounted on the lower end surface of the support ring (21); an output shaft of the servo motor (24) passes through the support ring (21) and is fixedly connected to the second gear (19).

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