Inner wall grinding equipment for anti-puncturing tire production

Abstract

The invention discloses inner wall grinding equipment for anti-puncture tire production, and belongs to the technical field of anti-puncture tire production. The inner wall grinding equipment comprises a base and a grinding mechanism, positioning mechanisms are arranged at the four corners of the top of the base, a supporting mechanism is arranged at the top of the base, and the grinding mechanism is arranged above the supporting mechanism; the rear end of the grinding mechanism is connected with a longitudinal driving mechanism, and a pressing mechanism is arranged above the grinding mechanism. And the grinding mechanism comprises a mounting frame, a lifting frame, a second electric push rod, a square frame, a grinding wheel and a grinding motor, and the square frame is slidably connected to the top of the lifting frame. By adopting the innovative design of the counterweight mechanism and the hydraulic oil circuit, constant-pressure grinding of the grinding wheel on the inner wall of the tire is achieved, and the problem of uneven grinding depth caused by pressure fluctuation is fundamentally avoided through constant-pressure control.

Description

Technical Field

[0001] This invention relates to the field of puncture-resistant tire manufacturing technology, and in particular to an inner wall grinding device for puncture-resistant tire manufacturing. Background Technology

[0002] In the production process of puncture-resistant tires, grinding the inner wall is a crucial step. The purpose is to increase the roughness of the inner wall, thereby enhancing the adhesion between the subsequently applied puncture-resistant coating and the tire substrate. Currently, the industry relies heavily on manual hand-held grinding equipment or relatively simple mechanized grinding equipment for tire inner wall grinding. These devices typically lack precise pressure control and stable tire positioning functions. The grinding effect largely depends on the operator's skill and focus, resulting in low production efficiency and high labor intensity.

[0003] Existing mechanized grinding equipment generally suffers from several significant technical drawbacks. First, it's difficult to maintain constant pressure on the tire's inner wall. When the tire's inner wall is uneven or the equipment moves, pressure fluctuations easily occur, leading to uneven grinding depth and directly affecting the adhesion of the puncture-resistant coating. Second, during grinding, the tire's positioning may experience slight displacement due to vibration or stress, or even relative slippage between the tire and the drive roller. This not only affects the accuracy of the grinding position but may also leave imperfections on the tire surface due to bouncing. Furthermore, most equipment lacks real-time monitoring and feedback adjustment capabilities for the grinding process, failing to adapt to individual tire differences or wear conditions. This easily leads to under- or over-grinding, making it difficult to guarantee product consistency. Therefore, we propose an inner wall grinding device for puncture-resistant tire production to address this problem. Summary of the Invention

[0004] The purpose of this invention is to provide an inner wall grinding device for the production of puncture-resistant tires, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A puncture-resistant tire manufacturing inner wall grinding device includes: a base and a grinding mechanism. The base is provided with positioning mechanisms at the four top corners and a support mechanism at the top. The grinding mechanism is located above the support mechanism, and a longitudinal drive mechanism is connected to the rear end of the grinding mechanism. A pressing mechanism is located above the grinding mechanism. The grinding mechanism includes: a mounting frame, a lifting frame, a second electric push rod, a square frame, a grinding wheel, and a grinding motor. The square frame is slidably connected to the top of the lifting frame, and a first pressure sensor and a second pressure sensor are fixedly installed on the top inner wall and the bottom inner wall of the square frame, respectively. A counterweight mechanism is provided on both sides of the square frame.

[0006] Preferably, the counterweight mechanism includes: a fixed plate, a counterweight box, a sealing box, and a sealing plate. The sealing box is fixedly installed at the bottom of the fixed plate, and the sealing plate is slidably connected inside the sealing box. A connecting rod is fixedly connected to the bottom of the sealing plate, and the bottom end of the connecting rod is fixedly connected to the lifting frame. A vertical pipe is connected to the top side of the fixed plate. A flow meter and a regulating valve are installed inside the vertical pipe. A piston is slidably installed inside the vertical pipe. A connecting column is fixedly connected to the top of the piston. The top of the connecting column is fixedly connected to the counterweight box. A sealing plug is provided at the top of the counterweight box. A guide frame is fixedly installed on the top of the fixed plate, the counterweight box is slidably sleeved on the outside of the guide frame, and the bottom end of the counterweight box abuts against the guide frame.

[0007] Preferably, the support mechanism includes: a housing and two mounting brackets, both of which are fixedly mounted on the top of the base. Support wheels are rotatably mounted inside the mounting brackets. A rotary motor is fixedly connected to the rear side of one of the mounting brackets, and the output shaft of the rotary motor is fixedly connected to the rear end of the corresponding support wheel. A rotating arm is fixedly connected to the front end of the support wheel, and a connecting column is fixedly connected to the top end of the rotating arm. A guide rail is fixedly connected to the bottom inner wall of the box. A movable seat is slidably sleeved on the outer side of the guide rail. A sliding frame is fixedly connected to the top of the movable seat. A first crossbar is fixedly connected to the right side of the sliding frame. A vertical plate is slidably installed inside the sliding frame. A second crossbar is fixedly connected to the left side of the vertical plate. A connecting frame is fixedly connected to the other end of the first crossbar and the other end of the second crossbar. The connecting post is inserted into the corresponding connecting frame. A third pressure sensor is fixedly connected to the inner walls on both sides of the sliding frame. A pressure plate is fixedly connected to the other end of the third pressure sensor. A connecting spring is fixedly connected to the other side of the pressure plate. The other end of the connecting spring is fixedly connected to the vertical plate. A fixing rod is fixedly installed inside the sliding frame, and the vertical plate is slidably sleeved on the outside of the fixing rod.

[0008] Preferably, the positioning mechanism includes: a support frame, a first electric push rod, a movable frame, and a positioning wheel. The positioning wheel is rotatably installed inside the movable frame, and the movable frame is fixedly connected to the output end of the first electric push rod. The first electric push rod is fixedly installed on one side of the support frame, the support frame is fixedly connected to the top of the base, and a telescopic rod is fixedly connected between the movable frame and the support frame.

[0009] Preferably, the longitudinal drive mechanism includes: a vertical plate, a third electric push rod, and a telescopic guide cylinder. The vertical plate is fixedly installed on the top of the base. The rear ends of the third electric push rod and the telescopic guide cylinder are both fixedly connected to the vertical plate. The output end of the third electric push rod and the front end of the telescopic guide cylinder are both fixedly connected to the mounting frame.

[0010] Preferably, the lifting frame is slidably connected within the mounting frame, and the second electric push rod is fixedly connected to the top inner wall of the mounting frame; The grinding motor is fixedly installed on the bottom inner wall of the lifting frame, and a drive shaft is fixedly connected to the output shaft of the grinding motor. The grinding wheel is fixedly connected to the bottom end of the drive shaft.

[0011] Preferably, the clamping mechanism includes: an L-shaped frame, a pressure roller, a pressure frame, and a fourth electric push rod. The L-shaped frame is fixedly installed on the top of the base. A fourth pressure sensor is fixedly connected to the top of the pressure frame. The output end of the fourth electric push rod is fixedly connected to the top of the fourth pressure sensor. The pressure roller is rotatably installed inside the pressure frame.

[0012] Preferably, a controller is provided on the front side of the housing.

[0013] The beneficial effects of this invention are as follows: 1. The puncture-resistant tire manufacturing inner wall grinding equipment described in this invention achieves constant pressure grinding of the tire's inner wall by employing an innovative design of a counterweight mechanism and hydraulic circuit. The core of this mechanism lies in using the up-and-down movement of a sealing plate within a sealing box to drive the flow of hydraulic oil, thereby transferring the constant weight of the counterweight box to the grinding wheel via a piston. During the grinding process, regardless of changes in the tire's inner wall contour or when the equipment is longitudinally fed, this hydraulic counterweight system dynamically and continuously provides stable downward pressure. This constant pressure control fundamentally avoids uneven grinding depth caused by pressure fluctuations, effectively improving the uniformity and consistency of tire inner wall grinding. This is crucial for ensuring the reliability of the puncture-resistant coating adhesion and significantly improves the final product quality.

[0014] 2. In this invention, the inner wall grinding equipment for puncture-resistant tire production achieves real-time dynamic stabilization of the tire's posture during grinding through the linkage control of the support mechanism and the clamping mechanism. The support wheel not only supports and drives the tire's rotation, but its minute differences in rotation can also be monitored in real time by pressure sensors within the connecting frame and sliding frame. Once a tendency for slippage or bouncing between the tire and the support wheel is detected, the control system immediately instructs the clamping mechanism to apply additional downward pressure, forcing the tire and support wheel to re-adhere tightly. This active stabilization mechanism effectively suppresses processing errors caused by minute tire displacement or vibration during grinding, ensuring the accuracy and repeatability of the grinding wheel trajectory, and providing a solid guarantee for obtaining a high-quality inner wall grinding surface.

[0015] 3. The puncture-resistant tire manufacturing inner wall grinding equipment described in this invention integrates multiple sets of high-sensitivity pressure sensors and a logic controller to construct an intelligent grinding depth adaptive control system. The system uses first and second pressure sensors to monitor the absolute position and relative state of the grinding head, serving as switching signals between coarse feed and constant pressure grinding. Simultaneously, a third pressure sensor in the support mechanism monitors the stability of tire operation. The controller comprehensively processes this sensor data, precisely directing the advance and retreat of the electric push rod, enabling the equipment to automatically adapt to tires of different specifications and adjust parameters according to real-time grinding status. This intelligent adaptability not only effectively prevents processing defects such as excessively deep or shallow grinding, improving yield, but also reduces reliance on operator experience, enhancing the equipment's production adaptability and automation level. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an inner wall grinding device for puncture-resistant tire production proposed in this invention; Figure 2 This is a cross-sectional view of an inner wall grinding device for puncture-resistant tire production proposed in this invention. Figure 3 This is a side sectional view of an inner wall grinding device for puncture-resistant tire production proposed in this invention. Figure 4 This is a three-dimensional structural diagram of the support mechanism proposed in this invention; Figure 5 This is a cross-sectional structural schematic diagram of the support mechanism proposed in this invention; Figure 6 for Figure 5 A magnified view of part A in the middle; Figure 7 This is a partial three-dimensional structural schematic diagram of the support mechanism proposed in this invention; Figure 8 This is a three-dimensional structural diagram of the positioning mechanism proposed in this invention; Figure 9 This is a three-dimensional structural diagram of the grinding mechanism and longitudinal drive mechanism proposed in this invention; Figure 10 This is a cross-sectional three-dimensional structural schematic diagram of the grinding mechanism proposed in this invention; Figure 11 for Figure 10 A magnified view of part B in the middle section; Figure 12 This is a cross-sectional structural schematic diagram of the counterweight mechanism proposed in this invention; Figure 13 This is a three-dimensional structural diagram of the clamping mechanism proposed in this invention.

[0017] In the diagram: 1. Base; 2. Support mechanism; 201. Mounting frame; 202. Support wheel; 203. Rotary motor; 204. Housing; 205. Rotating arm; 206. Connecting column; 207. Connecting frame; 208. First crossbar; 209. Second crossbar; 210. Sliding frame; 211. Fixed rod; 212. Vertical plate; 213. Connecting spring; 214. Pressure plate; 215. Third pressure sensor; 216. Moving seat; 217. Guide rail; 3. Positioning mechanism; 301. Support frame; 302. First electric push rod; 303. Telescopic rod; 304. Moving frame; 305. Positioning wheel; 4. Grinding mechanism; 401. Mounting frame; 402. Lifting frame; 403. Drive shaft; 404. Grinding wheel; 05. Grinding motor; 406. Second electric push rod; 407. Square frame; 408. First pressure sensor; 409. Second pressure sensor; 5. Longitudinal drive mechanism; 501. Vertical plate; 502. Third electric push rod; 503. Telescopic guide cylinder; 6. Pressing mechanism; 601. L-shaped frame; 602. Fourth electric push rod; 603. Fourth pressure sensor; 604. Press frame; 605. Press roller; 7. Controller; 8. Counterweight mechanism; 801. Sealing plate; 802. Connecting rod; 803. Sealing box; 804. Fixing plate; 805. Counterweight box; 806. Sealing plug; 807. Guide frame; 808. Connecting column; 809. Vertical pipe; 810. Piston; 811. Flow meter; 812. Regulating valve. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figures 1-13A puncture-resistant tire production inner wall grinding device includes: a base 1 and a grinding mechanism 4. The base 1 is provided with positioning mechanisms 3 at the four corners of the top. The base 1 is provided with a support mechanism 2 at the top. The grinding mechanism 4 is located above the support mechanism 2. The rear end of the grinding mechanism 4 is connected to a longitudinal drive mechanism 5. The grinding mechanism 4 is provided with a pressing mechanism 6 above the grinding mechanism 4. The grinding mechanism 4 includes: a mounting frame 401, a lifting frame 402, a second electric push rod 406, a square frame 407, a grinding wheel 404, and a grinding motor 405. The square frame 407 is slidably connected to the top of the lifting frame 402, and a first pressure sensor 408 and a second pressure sensor 409 are respectively fixedly installed on the top inner wall and the bottom inner wall of the square frame 407. A counterweight mechanism 8 is provided on both sides of the square frame 407.

[0020] In this embodiment, the counterweight mechanism 8 includes: a fixed plate 804, a counterweight box 805, a sealing box 803, and a sealing plate 801. The sealing box 803 is fixedly installed at the bottom of the fixed plate 804, and the sealing plate 801 is slidably connected inside the sealing box 803. A connecting rod 802 is fixedly connected to the bottom of the sealing plate 801. The bottom end of the connecting rod 802 is fixedly connected to the lifting frame 402. The sealing box 803 is filled with hydraulic oil. A vertical pipe 809 is connected to the top side of the fixed plate 804. A flow meter 811 and a regulating valve 812 are installed inside the vertical pipe 809. A piston 810 is slidably installed inside the vertical pipe 809. A connecting column 808 is fixedly connected to the top of the piston 810. The top of the connecting column 808 is fixedly connected to the counterweight box 805. A sealing plug 806 is provided at the top of the counterweight box 805. A guide frame 807 is fixedly installed on the top of the fixed plate 804, and a counterweight box 805 is slidably sleeved on the outside of the guide frame 807, with the bottom end of the counterweight box 805 abutting against the guide frame 807.

[0021] In this embodiment, the support mechanism 2 includes: a housing 204 and two mounting brackets 201. The housing 204 and the mounting brackets 201 are both fixedly installed on the top of the base 1. A support wheel 202 is rotatably installed inside the mounting bracket 201. A rotary motor 203 is fixedly connected to the rear side of one of the mounting brackets 201. The output shaft of the rotary motor 203 is fixedly connected to the rear end of the corresponding support wheel 202. A rotating arm 205 is fixedly connected to the front end of the support wheel 202, and a connecting column 206 is fixedly connected to the top end of the rotating arm 205; A guide rail 217 is fixedly connected to the bottom inner wall of the housing 204. A movable seat 216 is slidably sleeved on the outer side of the guide rail 217. A sliding frame 210 is fixedly connected to the top of the movable seat 216. A first crossbar 208 is fixedly connected to the right side of the sliding frame 210. A vertical plate 212 is slidably installed inside the sliding frame 210. A second crossbar 209 is fixedly connected to the left side of the vertical plate 212. A connecting frame 207 is fixedly connected to the other end of the first crossbar 208 and the other end of the second crossbar 209. A connecting post 206 is inserted into the corresponding connecting frame 207. A third pressure sensor 215 is fixedly connected to the inner walls on both sides of the sliding frame 210. A pressure plate 214 is fixedly connected to the other end of the third pressure sensor 215. A connecting spring 213 is fixedly connected to the other side of the pressure plate 214. The other end of the connecting spring 213 is fixedly connected to the vertical plate 212. A fixing rod 211 is fixedly installed inside the sliding frame 210, and the vertical plate 212 is slidably sleeved on the outside of the fixing rod 211.

[0022] In this embodiment, the positioning mechanism 3 includes: a support frame 301, a first electric push rod 302, a movable frame 304, and a positioning wheel 305. The positioning wheel 305 is rotatably installed inside the movable frame 304, and the movable frame 304 is fixedly connected to the output end of the first electric push rod 302. The first electric push rod 302 is fixedly installed on one side of the support frame 301. The support frame 301 is fixedly connected to the top of the base 1. A telescopic rod 303 is fixedly connected between the movable frame 304 and the support frame 301.

[0023] In this embodiment, the longitudinal drive mechanism 5 includes: a vertical plate 501, a third electric push rod 502, and a telescopic guide cylinder 503. The vertical plate 501 is fixedly installed on the top of the base 1. The rear ends of the third electric push rod 502 and the telescopic guide cylinder 503 are both fixedly connected to the vertical plate 501. The output end of the third electric push rod 502 and the front end of the telescopic guide cylinder 503 are both fixedly connected to the mounting frame 401.

[0024] In this embodiment, the lifting frame 402 is slidably connected inside the mounting frame 401, and the second electric push rod 406 is fixedly connected to the top inner wall of the mounting frame 401. The grinding motor 405 is fixedly installed on the bottom inner wall of the lifting frame 402. The output shaft of the grinding motor 405 is fixedly connected to the drive shaft 403, and the grinding wheel 404 is fixedly connected to the bottom end of the drive shaft 403.

[0025] In this embodiment, the pressing mechanism 6 includes: an L-shaped frame 601, a pressure roller 605, a pressing frame 604, and a fourth electric push rod 602. The L-shaped frame 601 is fixedly installed on the top of the base 1. A fourth pressure sensor 603 is fixedly connected to the top of the pressing frame 604. The output end of the fourth electric push rod 602 is fixedly connected to the top of the fourth pressure sensor 603. The pressure roller 605 is rotatably installed inside the pressing frame 604.

[0026] In this embodiment, a controller 7 is provided on the front side of the housing 204.

[0027] In this embodiment, when in use, the tire to be processed is first placed on top of the two support wheels 202, and then the first electric push rod 302 is activated to drive the positioning wheel 305 to move closer to the tire to position its front and rear positions. Next, the fourth electric push rod 602 is activated to drive the pressure roller 605 to move downward, so that the pressure roller 605 abuts against the top of the tire to achieve positioning; Next, the grinding motor 405 is started to rotate the drive shaft 403 and the grinding wheel 404, and the third electric push rod 502 is started to drive the grinding wheel 404 to move back and forth to adjust the longitudinal position; The second electric push rod 406 is activated, causing the square frame 407 to move downwards. The lifting frame 402 moves downwards synchronously under the action of gravity. When the grinding wheel 404 contacts the inner wall of the tire, the grinding wheel 404 begins to grind. At this time, the lifting frame 402 no longer moves downwards synchronously with the mounting frame 401 and the square frame 407. That is, the lifting frame 402 will move upwards relative to the mounting frame 401, causing the lifting frame 402 to disengage from the second pressure sensor 409. Then, through the connecting rod 802, it drives the sealing plate 801 to move upwards within the sealing box 803. The hydraulic oil inside the piston 809 is pushed into the vertical pipe 809, and the piston 810 is pushed upward. The piston 810 drives the counterweight box 805 upward through the connecting column 808, thereby supporting the weight of the configuration box and the lifting frame 402 onto the grinding wheel 404, so as to achieve constant pressure grinding of the grinding wheel 404. During this process, when the third electric push rod 502 is started to drive the grinding wheel 404 to move back and forth, the grinding wheel 404 can maintain constant pressure on the inner wall of the tire, thereby ensuring the uniformity of grinding at different positions of the tire. Different grinding pressures can be achieved by pre-filling different weights of configuration materials into the counterweight box 805 and sealing it with the sealing plug 806; During the grinding process, when the lifting frame 402 contacts the first pressure sensor 408 and generates pressure, the controller 7 controls the second electric push rod 406 to stop feeding. As the grinding progresses, the lifting frame 402 moves downward relative to the square frame 407, thereby driving the sealing plate 801 to move downward in the sealing box 803, so that the hydraulic oil in the vertical pipe 809 flows back into the sealing box 803. During this period, the flow rate of the hydraulic oil is monitored by the flow meter 811, and the flow rate is adjusted by the regulating valve 812 to meet different grinding requirements. By starting the rotary motor 203, one of the support wheels 202 is driven to rotate, causing the tire to roll, thus achieving grinding at different positions on the tire. Simultaneously, the tire's rolling motion, through contact with the other support wheel 202, causes it to rotate, which in turn drives the two rotating arms 205 to rotate. The rotating arms 205, through the cooperation of the connecting column 206 and the connecting frame 207, cause the connecting frame 207 to move back and forth, thereby causing the vertical plate 212 and the sliding frame 210 to move back and forth. When the tire rotates smoothly, the tire remains in contact with the two support wheels 202, allowing the two... The two support wheels 202 rotate at the same speed, thus keeping the relative position of the vertical plate 212 and the sliding frame 210 constant. When there is grinding or jumping between the tire and the support wheel 202, the two support wheels 202 rotate at different speeds, causing the vertical plate 212 and the sliding frame 210 to move relative to each other. This causes the third pressure sensor 215 to detect the pressure change, and then the controller 7 controls the fourth electric push rod 602 to drive the pressure roller 605 to move further downward and apply pressure to the top of the tire to ensure that the tire is in contact with the two support wheels 202, thereby ensuring the grinding quality.

[0028] The foregoing has provided a detailed description of the inner wall grinding equipment for puncture-resistant tire production provided by the present invention. Specific embodiments have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An inner wall grinding device for producing puncture-resistant tires, characterized in that, include: The base (1) and the polishing mechanism (4) are provided with positioning mechanisms (3) at the top four corners of the base (1), a support mechanism (2) is provided at the top of the base (1), the polishing mechanism (4) is located above the support mechanism (2), and a longitudinal drive mechanism (5) is connected to the rear end of the polishing mechanism (4). A pressing mechanism (6) is provided above the polishing mechanism (4). The grinding mechanism (4) includes: a mounting frame (401), a lifting frame (402), a second electric push rod (406), a square frame (407), a grinding wheel (404), and a grinding motor (405). The square frame (407) is slidably connected to the top of the lifting frame (402), and a first pressure sensor (408) and a second pressure sensor (409) are fixedly installed on the top inner wall and the bottom inner wall of the square frame (407), respectively. A counterweight mechanism (8) is provided on both sides of the square frame (407).

2. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The counterweight mechanism (8) includes: a fixed plate (804), a counterweight box (805), a sealing box (803), and a sealing plate (801). The sealing box (803) is fixedly installed at the bottom of the fixed plate (804), and the sealing plate (801) is slidably connected inside the sealing box (803). A connecting rod (802) is fixedly connected to the bottom of the sealing plate (801), and the bottom end of the connecting rod (802) is fixedly connected to the lifting frame (402). The top side of the fixed plate (804) is connected to a vertical pipe (809). A flow meter (811) and a regulating valve (812) are installed inside the vertical pipe (809). A piston (810) is slidably installed inside the vertical pipe (809). A connecting column (808) is fixedly connected to the top of the piston (810). The top of the connecting column (808) is fixedly connected to the counterweight box (805). A sealing plug (806) is provided at the top of the counterweight box (805). A guide frame (807) is fixedly installed on the top of the fixed plate (804), and the counterweight box (805) is slidably sleeved on the outside of the guide frame (807), with the bottom end of the counterweight box (805) abutting against the guide frame (807).

3. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The support mechanism (2) includes: a housing (204) and two mounting brackets (201). The housing (204) and the mounting brackets (201) are both fixedly installed on the top of the base (1). Support wheels (202) are rotatably installed inside the mounting brackets (201). A rotary motor (203) is fixedly connected to the rear side of one of the mounting brackets (201). The output shaft of the rotary motor (203) is fixedly connected to the rear end of the corresponding support wheel (202). The front end of the support wheel (202) is fixedly connected to a rotating arm (205), and the top end of the rotating arm (205) is fixedly connected to a connecting column (206). A guide rail (217) is fixedly connected to the bottom inner wall of the box (204). A movable seat (216) is slidably sleeved on the outer side of the guide rail (217). A sliding frame (210) is fixedly connected to the top of the movable seat (216). A first crossbar (208) is fixedly connected to the right side of the sliding frame (210). A vertical plate (212) is slidably installed inside the sliding frame (210). A second crossbar (209) is fixedly connected to the left side of the vertical plate (212). A connecting frame (207) is fixedly connected to the other end of the first crossbar (208) and the other end of the second crossbar (209). A connecting column (206) is inserted into the corresponding connecting frame (207). A third pressure sensor (215) is fixedly connected to both inner walls of the sliding frame (210). A pressure plate (214) is fixedly connected to the other end of the third pressure sensor (215). A connecting spring (213) is fixedly connected to the other side of the pressure plate (214). The other end of the connecting spring (213) is fixedly connected to the vertical plate (212). A fixing rod (211) is fixedly installed inside the sliding frame (210), and the vertical plate (212) is slidably sleeved on the outside of the fixing rod (211).

4. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The positioning mechanism (3) includes: a support frame (301), a first electric push rod (302), a movable frame (304), and a positioning wheel (305). The positioning wheel (305) is rotatably installed inside the movable frame (304), and the movable frame (304) is fixedly connected to the output end of the first electric push rod (302). The first electric push rod (302) is fixedly installed on one side of the support frame (301). The support frame (301) is fixedly connected to the top of the base (1). A telescopic rod (303) is fixedly connected between the movable frame (304) and the support frame (301).

5. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The longitudinal drive mechanism (5) includes: a vertical plate (501), a third electric push rod (502), and a telescopic guide cylinder (503). The vertical plate (501) is fixedly installed on the top of the base (1). The rear ends of the third electric push rod (502) and the telescopic guide cylinder (503) are both fixedly connected to the vertical plate (501). The output end of the third electric push rod (502) and the front end of the telescopic guide cylinder (503) are both fixedly connected to the mounting frame (401).

6. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The lifting frame (402) is slidably connected inside the mounting frame (401), and the second electric push rod (406) is fixedly connected to the top inner wall of the mounting frame (401); The grinding motor (405) is fixedly installed on the bottom inner wall of the lifting frame (402), and a drive shaft (403) is fixedly connected to the output shaft of the grinding motor (405). The grinding wheel (404) is fixedly connected to the bottom end of the drive shaft (403).

7. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, The pressing mechanism (6) includes: an L-shaped frame (601), a pressure roller (605), a pressure frame (604), and a fourth electric push rod (602). The L-shaped frame (601) is fixedly installed on the top of the base (1). A fourth pressure sensor (603) is fixedly connected to the top of the pressure frame (604). The output end of the fourth electric push rod (602) is fixedly connected to the top of the fourth pressure sensor (603). The pressure roller (605) is rotatably installed inside the pressure frame (604).

8. The inner wall grinding equipment for puncture-resistant tire production according to claim 1, characterized in that, A controller (7) is provided on the front side of the housing (204).

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