Oblique retreading tire toe opening device and process

Abstract

The application provides a diagonal retreading tire toe opening device and process, wherein the diagonal retreading tire toe opening device comprises a mounting table, one side of the mounting table is provided with a supporting pipe, one side of the supporting pipe is provided with a pushing assembly, the pushing assembly comprises a hydraulic cylinder, a nut and a plurality of rubber plugs, a supporting box is slidably arranged in the supporting pipe, a plurality of jacking assemblies are arranged on the outer side of the supporting box, a plurality of outer grooves are formed on the outer side of the supporting pipe, and a clamping assembly is arranged in each of the outer grooves. The pushing assembly and the supporting box are matched, the plurality of jacking assemblies control the plurality of clamping assemblies to support and protect the positions of the tire toe that need to be perforated, the damage to the tire is reduced, the perforating assembly can perforate the plurality of positions of the tire toe that are supported and protected at one time, the tire maintenance speed is improved, the time cost investment is reduced, the holes are regularly distributed, and the overall appearance of the tire is less damaged.

Description

Technical Field

[0001] This invention relates to the field of oblique cross tire retreading toe hole piercing technology, specifically to an oblique cross tire retreading toe hole piercing device and process. Background Technology

[0002] Some vehicle tires bear heavy loads, are frequently started and braked, and are subjected to significant impacts from sharp stones, resulting in a relatively short lifespan for engineering tires and generating a large amount of waste tires. Therefore, retreading and reusing waste engineering tires can further extend their lifespan, conserve rubber resources, and promote environmental protection, effectively transforming "black pollution" into "black energy."

[0003] With the development of my country's engineering tire retreading industry, it is necessary to re-puncture the tire carcass at the bead position during the tire retreading process to release excess air and reduce the problem of blistering during tire use. Generally, tire forming machines use manual puncturing at the tire repair and inspection station. Manual operation is not only inefficient and labor-intensive, but also makes it difficult to completely standardize the quality of the holes. Non-standard puncturing can easily cause quality defects such as dents and deformation. Summary of the Invention

[0004] To solve the above problems, the present invention provides the following technical solution: a bias-cross retreading tire bead piercing device, comprising a mounting platform, a support pipe 3 provided on one side of the mounting platform, the support pipe 3 supporting the tire, the tire being suspended in the air, a pushing assembly provided on one side of the support pipe, the pushing assembly including a hydraulic cylinder, a nut and multiple rubber plugs, the nut being threaded onto the outside of the support pipe having a threaded portion, an operating circular plate and a hydraulic cylinder being fixedly installed on one side of the support pipe, a support box being slidably arranged inside the support pipe, and multiple lifting assemblies being arranged on the outside of the support box. The component has multiple outer grooves on the outside of the support tube, each containing a clamping assembly. The clamping plate clamps and fixes the tire toe to one side of the limiting baffle, with the circular hole in the clamping plate aligned with the pre-drilled hole in the limiting baffle. The clamping assemblies are installed on the support tube. Multiple lifting assemblies are located at the bottom of the clamping assemblies. The pushing assembly cooperates with the support box, allowing the lifting assemblies to control the clamping assemblies, supporting and protecting the tire toe at the puncture site, reducing damage to the tire. The puncture assembly can puncture the tire toe in one go. Multiple openings are made at various locations on the support protection system. An installation ring, piston, and multiple pressure relief valves are installed between the support box and the hydraulic cylinder. Colored gas stored inside the support box is released into the tire through these valves. During tire toe puncture, the tire's condition is monitored, and the puncture process can be terminated promptly. A limiting baffle is fixedly fitted to the outer end of the support tube away from the pushing component. One side of the limiting baffle is curved, ensuring the tire and tire toe are in close contact. The limiting baffle has multiple pre-drilled holes. A perforation assembly is installed between the mounting platforms. The perforation assembly includes multiple perforation needles. These moving needles pass through the pre-drilled holes, tire toe, and round holes, leaving holes in the tire toe. The perforation assembly can drill holes in multiple locations on the tire toe that are supported and protected at the same time, improving tire repair speed. An auxiliary support assembly is installed between the perforation assembly and the support tube. The auxiliary support assembly is used to support and protect the multiple perforation needles, preventing them from deforming or even breaking due to stress at both ends, thus protecting the perforation needles and ensuring their service life.

[0005] Preferably, multiple metal pipes are fixedly connected between the support pipe and the mounting platform. The mounting platform supports the tire through the metal pipes and the support pipe, and the tire is suspended in the air. An operating circular plate is fixedly sleeved on the outside of the hydraulic cylinder. A nut is fixedly connected to one side of the operating circular plate. The rotating operating circular plate drives the nut to rotate. The nut is threaded onto the outside of the threaded part of the support pipe. The operating circular plate and the hydraulic cylinder are fixedly installed on one side of the support pipe. Multiple rubber plugs are slidably set on one side of the operating circular plate. The rubber plugs are set inside the nut.

[0006] Preferably, a connecting rod is fixedly connected to one side of the support box, and the connecting rod is slidably connected to the support tube. The support box and the support tube are in a slidable connection relationship, and the support box can reciprocate laterally inside the support tube. The mounting ring is fixedly installed inside the support box at one end near the hydraulic cylinder. The piston is located inside the support box, and one end of the hydraulic cylinder passes through the mounting ring and enters the support box, pushing the piston to slide inside the support box. The air pressure inside the support box increases. Multiple pressure relief valves are fixedly connected inside the support box on the side away from the mounting ring. The colored gas stored inside the support box opens the pressure relief valve and is discharged into the support tube. The colored gas enters the tire through the outer groove.

[0007] Preferably, a solenoid valve is fixedly connected to one side of the support box, and a gas guide bend is fixedly connected to the other side of the solenoid valve. The gas supply channel formed by the solenoid valve and the gas guide bend is connected to the inside of the support box. A gas supply pump is fixedly connected between the gas guide bend and the mounting platform. After the solenoid valve is opened, the gas supply pump can inject colored gas into the support box.

[0008] Preferably, the lifting assembly includes a track, which is fixedly connected to the outside of the support box. The movement of the support box drives the movement of multiple inclined tracks. A U-shaped frame is fixedly connected to one side of the track. The U-shaped frame is set inside the outer groove. The track drives the U-shaped frame to move inside the outer groove. The U-shaped structure design of the U-shaped frame will not affect the movement of the perforating needle.

[0009] Preferably, the clamping assembly includes a clamping plate, on which a drag-reducing frame is fixedly mounted. The drag-reducing frame is located inside the track, so the track movement applies an inclined force to the drag-reducing frame, and the drag-reducing frame drives the mounted clamping plate to move longitudinally. A circular hole and two movable slots are provided on one side of the clamping plate.

[0010] Preferably, each of the two movable slots is equipped with a sliding ball. The track movement applies an inclined force to the drag reduction frame, which drives the installed clamping plate to move longitudinally. The clamping plate moves away from the inside of the outer slot. A transmission plate is fixedly connected between the two sliding balls. The sliding frame formed by the transmission plate and the two sliding balls limits the clamping plate so that it does not shake when it moves up. A damper is fixedly connected between the transmission plate and the mounting platform. The clamping plate is located inside the outer slot.

[0011] Preferably, a connecting frame is fixedly connected between multiple piercing needles, and a pneumatic cylinder is fixedly connected between the connecting frame and the mounting platform. When the pneumatic cylinder is working, it pushes multiple piercing needles to move synchronously through the connecting frame. The moving piercing needles penetrate the reserved hole, the tire toe, and the round hole, leaving multiple holes on the tire toe. The connecting frame is slidably equipped with three T-shaped rods. The movement of the connecting frame will not push the T-shaped rods to move, so the support ring will not be displaced in the initial stage of the piercing needles moving towards the support tube.

[0012] Preferably, the auxiliary support assembly includes a support ring, which is fixedly connected to the T-shaped rod. Multiple piercing needles are arranged on the outside of the support ring. The support ring supports the piercing needles, increases the stress points of the piercing needles, and prevents the piercing needles from deforming or even breaking.

[0013] Preferably, multiple bent rods are fixedly connected inside the support ring. Under the support and limiting of multiple T-shaped rods and bent rods, the support ring stably supports multiple perforating needles. Multiple side grooves are opened on one side of the support tube, and clamping plates are set inside the side grooves. One end of each clamping plate is fixedly connected to multiple bent rods. The bent rods are limited by the clamping plates, which limits the rotation of the support ring. The other side of each clamping plate is fixedly connected to the support tube with a return spring. When the support ring is pushed to move by the connecting frame, the bent rods push the clamping plates to move, causing the return springs fixedly connected to the support tube to contract. Finally, the rebounding return springs push the clamping plates, causing the clamping plates and bent rods to push the support ring to return to its original position.

[0014] A process for oblique retreading tire toe piercing based on the same concept includes the following steps:

[0015] Step 1: Push the retreaded tire to the outside of the support tube until it is stopped by the limiting baffle. The tire is then suspended in the air, completing the preparation for processing.

[0016] Step 2: Rotate the operating disc to thread the nut onto the outside of the support tube, and then fix the operating disc and hydraulic cylinder to one side of the support tube.

[0017] Step 3: The working hydraulic cylinder pushes the piston to slide, and the colored gas stored inside the support box opens the pressure relief valve and is discharged into the tire. The tire repair condition is checked, and it is decided whether to stop the tire toe puncture work.

[0018] Step 4: When termination is not selected, the support box moves laterally as a whole, the track moves and applies an inclined force to the drag reduction frame, the drag reduction frame drives the installed clamping plate to move longitudinally, and the clamping plate clamps and fixes the tire toe to one side of the limit baffle.

[0019] Step 5: Control the pneumatic cylinder to start working, and push multiple piercing needles to move synchronously through the connecting frame, and open holes in multiple positions where the tire toe is supported and protected at one time;

[0020] Step Six: Control the height of the pneumatic cylinder to perform multiple perforations on both sides of the tire toe in one operation;

[0021] Step 7: Control the pneumatic cylinder to reset, the solenoid valve to open, the air pump to work, and colored gas to be injected into the support box, so that the piston resets and pushes the support box to reset, and the clamping plate automatically resets.

[0022] This invention provides a process for oblique cross-cutting retreading of tire toe openings, which has the following beneficial effects:

[0023] 1. This bias-cross retreading tire toe piercing process, through the cooperation of the pushing component and the support box, enables multiple lifting components to control multiple clamping components to support and protect the tire toe where piercing is required, reducing damage to the tire. The piercing component can open multiple supported and protected positions of the tire toe at one time, improving tire repair speed, reducing time cost, and the holes are regularly distributed, minimizing damage to the overall aesthetics of the tire.

[0024] 2. In this oblique retreading tire toe piercing process, the clamping plate clamps and fixes the tire toe to one side of the limiting baffle. At this time, the round hole opened on the clamping plate is aligned with the reserved hole opened on the limiting baffle. The reserved hole and the round hole are reserved channels for piercing the tire toe, preventing the tip of the piercing needle from breaking and protecting the piercing needle. Furthermore, the position of the tire toe to be pierced by the piercing needle is clamped and supported by the clamping plate and the limiting baffle. The tire toe will not undergo large-area deformation during the piercing process, reducing structural deformation during tire toe repair and ensuring the quality of tire repair.

[0025] 3. In this bias-cross retreading tire bead piercing process, one end of the hydraulic cylinder passes through the mounting ring and enters the support box, pushing the piston to slide inside the support box. After the air pressure inside the support box increases to a certain value, the colored gas stored inside the support box bursts through the pressure relief valve and is discharged into the support pipe. The colored gas enters the tire through the outer groove. Workers only need to observe the colored gas leakage to determine whether the tire needs to continue repair work. During the tire bead piercing process, the tire repair status can be detected, and the tire bead piercing work can be stopped in time to reduce cost input.

[0026] 4. In this oblique retreading tire bead piercing process, the support ring is fixedly connected to the T-shaped rod. The movement of the connecting frame will not push the T-shaped rod, so the support ring will not shift during the initial movement of the piercing needle towards the support tube. Furthermore, multiple bent rods are fixedly connected inside the support ring. With the support and limiting of these multiple T-shaped rods and bent rods, the support ring stably supports multiple piercing needles. This support ring increases the stress points on the piercing needles, preventing deformation or even breakage due to stress at both ends. This protects the piercing needles, ensures their service life, and prevents injury to workers from needle breakage.

[0027] 5. In this oblique retreading tire toe piercing process, the connecting frame contacts the support ring, pushing the support ring to move towards the support tube. This allows the operator to control the piercing needle to penetrate the entire tire, enabling the piercing needle to directly pierce through both sides of the tire toe. The toe is supported by an operating plate on one side in the direction of force deformation, and the operating plate has multiple small holes on one side. The piercing needle can pass through these small holes, so the piercing needle can complete the processing of multiple piercing positions on both sides of the tire in one go without causing large-scale deformation of the tire. This shortens the tire repair cycle and saves time and labor costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the limiting baffle of the present invention;

[0030] Figure 3 This is a schematic diagram of the support ring structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the track structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the clamping plate of the present invention;

[0033] Figure 6 For the present invention Figure 3 A schematic diagram of the C-section structure;

[0034] Figure 7 This is a partial structural schematic diagram of the support box of the present invention;

[0035] Figure 8 This is a schematic diagram of the T-shaped rod of the present invention;

[0036] Figure 9 This is a schematic diagram of the connecting frame of the present invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Mounting platform; 2. Metal pipe; 3. Support pipe; 4. Limiting baffle; 5. Reserved hole; 6. Outer groove; 7. Support box; 8. Connecting rod; 9. Track; 10. U-shaped frame; 11. Clamping plate; 12. Drag reduction frame; 13. Round hole; 14. Transmission plate; 15. Damper; 16. Air guide bend; 17. Air supply pump; 18. Mounting ring; 19. Piston; 20. Pressure relief valve; 21. Pneumatic cylinder; 22. Connecting frame; 23. Perforating needle; 24. T-shaped rod; 25. Support ring; 26. Bent rod; 27. Side groove; 28. Return spring; 29. ​​Clamping plate; 30. Solenoid valve; 31. Movable groove; 32. Sliding ball; 33. Operating circular plate; 34. Nut; 35. Rubber plug; 36. Hydraulic cylinder. Detailed Implementation

[0038] This invention provides a device and process for oblique cross tire toe piercing.

[0039] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The oblique retreading tire bead piercing device includes a mounting platform 1. A support tube 3 is provided on one side of the mounting platform 1, and a pushing component is provided on one side of the support tube 3. The pushing component includes a hydraulic cylinder 36, a nut 34, and multiple rubber plugs 35. A support box 7 is slidably installed inside the support tube 3. Multiple lifting components are provided on the outside of the support box 7. Multiple outer grooves 6 are opened on the outside of the support tube 3. Clamping components are provided inside the multiple outer grooves 6. The clamping components are installed on the support tube 3. The multiple lifting components are respectively set at the bottom of the multiple clamping components. A mounting ring 18, a piston 19, and multiple pressure relief valves 20 are provided between the support box 7 and the hydraulic cylinder 36. A limiting baffle 4 is fixedly sleeved on the outside of the support tube 3 away from the pushing component. The limiting baffle 4 has multiple reserved holes 5. A piercing component is provided between the limiting baffle 4 and the mounting platform 1. The piercing component includes multiple piercing needles 23. An auxiliary support component is provided between the piercing component and the support tube 3. The auxiliary support component is used to support and protect the multiple piercing needles 23.

[0040] A process for puncturing the toe opening of a refurbished tire with a bias-cross pattern includes the following steps:

[0041] Step 1: Push the retreaded tire to the outside of the support tube 3 until one side of the tire contacts and is limited by the limiting baffle 4. One side of the limiting baffle 4 is curved, so the tire is in close contact with the limiting baffle 4, and the tire toe is also in close contact with the limiting baffle 4. Multiple metal tubes 2 are fixedly connected between the support tube 3 and the mounting platform 1, allowing the mounting platform 1 to support the tire through the metal tubes 2 and the support tube 3. The tire is suspended in the air, completing the preparation for processing.

[0042] Step 2: An operating circular plate 33 is fixedly sleeved on the outside of the hydraulic cylinder 36, and multiple rubber plugs 35 are slidably disposed on one side of the operating circular plate 33. After the operating circular plate 33 is picked up, the multiple rubber plugs 35 are aligned with the multiple outer grooves 6. After a part of the rubber plugs 35 is inserted into the outer grooves 6, the operating circular plate 33 is rotated.

[0043] Because the nut 34 is fixedly connected to one side of the operating disc 33, the rotating operating disc 33 drives the nut 34 to rotate. The nut 34 is threaded onto the outside of the support tube 3, and the operating disc 33 and the hydraulic cylinder 36 are fixedly installed on one side of the support tube 3. The rubber plug 35 is placed inside the nut 34. At this time, the rubber plug 35 blocks part of the outer groove 6, reducing the airflow channel.

[0044] Step 3: Activate hydraulic cylinder 36, and fix mounting ring 18 inside support box 7 near the end of hydraulic cylinder 36. One end of the working hydraulic cylinder 36 passes through mounting ring 18 and enters the support box 7, pushing piston 19 to slide inside support box 7, increasing the air pressure inside support box 7. Since multiple pressure relief valves 20 are fixedly connected inside support box 7 on the side away from mounting ring 18, after the air pressure inside support box 7 increases to a certain pressure value, the colored gas stored inside support box 7 opens the pressure relief valve 20 and is discharged into support pipe 3. The colored gas enters the tire through outer groove 6.

[0045] Since the outer groove 6 is blocked and sealed by the rubber plug 35 and the operating circular plate 33, and the inner diameter of the tire is slightly smaller than the outer diameter of the support tube 3, the tire is slightly deformed and is in a sealed state with the support tube 3. At this time, the staff only needs to observe the colored gas leakage to determine whether the tire needs to continue to be repaired. During the tire toe puncture process, the tire repair condition is detected, and the tire toe puncture work can be stopped in time to reduce cost input.

[0046] Step 4: When the tire toe puncture operation is not terminated, after the piston 19 moves inside the support box 7 and comes into contact with multiple pressure relief valves 20, the piston 19 pushes the support box 7 as a whole to move through the pressure relief valves 20, causing the support box 7 to move laterally. The movement of the support box 7 drives the lifting assembly to move.

[0047] The lifting assembly includes rails 9, which are fixedly connected to the outside of the support box 7. Movement of the support box 7 drives the movement of multiple inclined rails 9. A U-shaped frame 10 is disposed inside the outer groove 6, and the rails 9 drive the U-shaped frame 10 to move within the outer groove 6. Furthermore, a drag-reducing frame 12 is fixedly mounted on the clamping plate 11. The drag-reducing frame 12 is disposed inside the rails 9, so the movement of the rails 9 applies an inclined force to the drag-reducing frame 12. The drag-reducing frame 12 drives the mounted clamping plate 11 to move longitudinally, causing the clamping plate 11 to move away from inside the outer groove 6.

[0048] Furthermore, a damper 15 is fixedly connected between the transmission plate 14 and the mounting platform 1. When the track 9 pushes the clamping plate 11 to move through the drag reduction frame 12, the force exerted by the track 9 on the lateral movement of the clamping plate 11 is insufficient to overcome the elastic force of the damper 15, so the clamping plate 11 only moves longitudinally. When the U-shaped frame 10 fixedly connected to one side of the track 9 contacts the clamping plate 11, the lateral force exerted by the track 9 on the clamping plate 11 through the U-shaped frame 10 is greater than the lateral force exerted by the damper 15 on the clamping plate 11. Therefore, the track 9 drives the clamping plate 11 to move laterally through the U-shaped frame 10. The clamping plate 11 clamps and fixes the tire toe to one side of the limiting baffle 4. At this time, the round hole 13 opened in the clamping plate 11 is aligned with the reserved hole 5 opened in the limiting baffle 4. The reserved hole 5 and the round hole 13 are reserved channels for piercing the tire toe, preventing the tip of the piercing needle 23 from breaking and protecting the piercing needle 23. The position where the tire toe is pierced by the piercing needle 23 is clamped and supported by the clamping plate 11 and the limiting baffle 4. The tire toe will not undergo large-area deformation during the piercing process, reducing structural deformation during tire toe repair and ensuring the quality of tire repair.

[0049] Step 5: After the hydraulic cylinder 36 stops working, the piercing process is performed. Because the multiple piercing needles 23 are fixedly connected to the connecting frame 22, and the connecting frame 22 is fixedly connected to the mounting platform 1, when the pneumatic cylinder 21 works, it pushes the multiple piercing needles 23 to move synchronously through the connecting frame 22. After the multiple piercing needles 23 pass through the reserved hole 5, the tire toe, and the round hole 13, they leave holes on the tire toe. The holes are used to release excess air inside the tire during use, reducing the problem of tire blistering. By cooperating with the push assembly and the support box 7, the multiple lifting components control the multiple clamping components to support and protect the position of the tire toe that needs to be pierced, reducing damage to the tire. The piercing assembly can open multiple positions of the tire toe that are supported and protected at one time, improving the tire repair speed and reducing time costs. Moreover, the holes produced by this processing technology are regularly distributed, with minimal damage to the overall aesthetics of the tire.

[0050] During the movement of multiple perforating needles 23, all perforating needles 23 are located on the outside of the support ring 25. The support ring 25 supports the perforating needles 23, increases the stress points of multiple perforating needles 23, and prevents the perforating needles 23 from deforming or even breaking due to stress at both ends. This protects the perforating needles 23, ensures their service life, and prevents the perforating needles 23 from breaking and causing injury to the workers.

[0051] Step Six: After the connecting frame 22 moves a certain distance towards the support tube 3, the connecting frame 22 contacts the support ring 25, pushing the support ring 25 to move towards the support tube 3. This satisfies the operator's need to control the piercing needle 23 to penetrate the entire tire, allowing the piercing needle 23 to directly penetrate both sides of the tire toe. The piercing needle 23 is supported by the operating circular plate 33 on one side of the tire toe in the direction of force deformation. The operating circular plate 33 has multiple small holes on one side, through which the piercing needle 23 can pass. Therefore, the piercing needle 23 can complete the processing of multiple piercing positions on both sides of the tire in one go without causing large-scale deformation of the tire, shortening the tire repair cycle and saving time and labor costs.

[0052] Multiple side grooves 27 are provided on one side of the support tube 3. Each side groove 27 contains a retaining plate 29. One end of each retaining plate 29 is fixedly connected to a multiple bent rod 26. The bent rods 26 are limited by the retaining plates 29, thus limiting the rotation of the support ring 25. When the support ring 25 is pushed by the connecting frame 22, the bent rods 26 push the retaining plates 29 to move, causing the return springs 28 fixedly connected between the retaining plates 29 and the support tube 3 to contract.

[0053] Step 7: After the perforating needle 23 resets, the rebounding return spring 28 pushes the clamping plate 29, causing the clamping plate 29 and the bent rod 26 to push the support ring 25 to reset. When the hydraulic cylinder 36 resets and the support box 7 resets, the bottom of the clamping plate 11 loses the support of the inclined track 9, and the rebounding damper 15 pushes the clamping plate 11 to move, and the clamping plate 11 resets under the need of gravity. A solenoid valve 30 is fixedly connected to one side of the support box 7, and a gas guide bend 16 is fixedly connected to one side of the solenoid valve 30. After the solenoid valve 30 is opened, the gas supply channel formed by the solenoid valve 30 and the gas guide bend 16 is connected to the inside of the support box 7. At this time, the gas supply pump 17, which is fixedly connected between the gas guide bend 16 and the mounting platform 1, is activated, which can inject colored gas into the support box 7, causing the piston 19 to reset and push the support box 7 to reset.

[0054] In addition, the air guide bend 16 has a telescopic function to accommodate the overall movement of the support box 7. The air guide bend 16 is designed in a stepped shape, and one end passes through the connecting frame 22, so the air guide bend 16 will not affect the normal operation of the support ring 25 and the connecting frame 22.

[0055] Furthermore, the rubber plug 35 slides along a circumferential trajectory on one side of the operating circular plate 33, without affecting the rotation of the nut 34. The nut 34 is rotated and fitted onto the outside of the threaded portion of the support box 7. Since the length of the nut 34 and the length of the threaded portion on the outside of the support box 7 are preset and fixed, when the nut 34 rotates, causing the operating circular plate 33 to contact one end of the support box 7, the small hole in the operating circular plate 33 aligns with the connecting rod 8 in the pre-drilled hole 5.

[0056] In addition, since a connecting rod 8 is fixedly connected to one side of the support box 7, and the connecting rod 8 is slidably connected to the support tube 3, the support box 7 and the support tube 3 are in a slidable connection relationship, and the support box 7 can move laterally back and forth inside the support tube 3.

[0057] Additionally, the connecting frame 22 is slidably equipped with three T-shaped rods 24, and the support ring 25 is fixedly connected to the T-shaped rods 24. The movement of the connecting frame 22 will not push the T-shaped rods 24 to move, so the support ring 25 will not shift initially as the perforating needle 23 moves towards the support tube 3. Furthermore, multiple bent rods 26 are fixedly connected inside the support ring 25. With the support and limiting effect of the multiple T-shaped rods 24 and bent rods 26, the support ring 25 stably supports the multiple perforating needles 23.

[0058] Additionally, a circular hole 13 and two movable slots 31 are provided on one side of the clamping plate 11. Each of the two movable slots 31 is provided with a sliding ball 32. A transmission plate 14 is fixedly connected between the two sliding balls 32. The sliding frame formed by the transmission plate 14 and the two sliding balls 32 limits the clamping plate 11, so that the clamping plate 11 will not shake when it moves.

Claims

1. A diagonal retreaded tire toe slit apparatus comprising a mounting table, characterized in that: The mounting table is provided with a supporting pipe on one side, the supporting pipe is provided with a pushing assembly on one side, the pushing assembly comprises a hydraulic cylinder, a nut and a plurality of rubber plugs, a supporting box is slidably arranged in the supporting pipe, a plurality of jacking assemblies are arranged on the outer side of the supporting box, a plurality of outer grooves are formed on the outer side of the supporting pipe, and a clamping assembly is arranged in each of the outer grooves, the clamping assembly is arranged on the supporting pipe, the plurality of jacking assemblies are arranged at the bottom of the plurality of clamping assemblies respectively, a mounting ring, a piston and a plurality of pressure relief valves are arranged between the supporting box and the hydraulic cylinder, a limiting baffle is fixedly sleeved on the end of the outer side of the supporting pipe away from the pushing assembly, a plurality of reserved holes are formed in the limiting baffle, a perforating assembly is arranged between the limiting baffle and the mounting table, the perforating assembly comprises a plurality of perforating needles, an auxiliary supporting assembly is arranged between the perforating assembly and the supporting pipe, and the auxiliary supporting assembly is used for supporting and protecting the plurality of perforating needles; A plurality of metal pipes are fixedly connected between the supporting pipe and the mounting table, an operation disc is fixedly sleeved on the outer side of the hydraulic cylinder, the nut is fixedly connected on one side of the operation disc, and the plurality of rubber plugs are slidably arranged on one side of the operation disc, and the rubber plugs are arranged in the nut; The supporting box is fixedly connected with a connecting rod on one side, the connecting rod is slidably connected with the supporting pipe, the mounting ring is fixedly arranged in the supporting box and close to one end of the hydraulic cylinder, the piston is arranged in the supporting box, and the plurality of pressure relief valves are fixedly connected to one side of the supporting box away from the mounting ring; The jacking assembly comprises a track, the track is fixedly connected to the outer side of the supporting box, and a U-shaped frame is fixedly connected to one side in the track; The clamping assembly comprises a clamping plate, the clamping plate is fixedly provided with a drag reduction frame, the drag reduction frame is arranged in the track, a circular hole and two movable grooves are formed in one side of the clamping plate.

2. The bias ply retread toe slit apparatus of claim 1, wherein: The supporting box is fixedly connected with an electromagnetic valve on one side, the electromagnetic valve is fixedly connected with a gas guide elbow on one side, and the gas guide elbow is fixedly connected with a gas supply pump between the mounting table.

3. The bias ply retread toe puncture apparatus of claim 1, wherein: Sliding balls are arranged in the two movable grooves, a transmission plate is fixedly connected between the two sliding balls, a damper is fixedly connected between the transmission plate and the mounting table, and the clamping plate is arranged in the outer groove.

4. The bias ply retread toe puncture apparatus of claim 1, wherein: A connecting frame is fixedly connected between the plurality of perforating needles, a gas cylinder is fixedly connected between the connecting frame and the mounting table, and three T-shaped rods are slidably arranged on the connecting frame.

5. The bias ply retread toe puncture apparatus of claim 4, wherein: The auxiliary supporting assembly comprises a supporting ring, the supporting ring is fixedly connected with the T-shaped rods, the plurality of perforating needles are arranged on the outer side of the supporting ring, a plurality of bent rods are fixedly connected in the supporting ring, a plurality of side grooves are formed on one side of the supporting pipe, clamping plates are arranged in the side grooves, one end of the plurality of clamping plates is fixedly connected with the plurality of bent rods respectively, and a reset spring is fixedly connected between the other side of the plurality of clamping plates and the supporting pipe.

6. A process for piercing the toe of a bias-ply retreaded tire, suitable for use with a device for piercing the toe of a bias-ply retreaded tire as claimed in any one of claims 1 to 5, characterized in that: The method comprises the following steps: Step one: push the retreaded tire to the outer side of the supporting pipe until it is limited by the limiting baffle, the tire is suspended and arranged, and the processing preparation is completed; Step two: rotate the operation disc, thread the nut to the outer side of the supporting pipe, and fixedly arrange the operation disc and the hydraulic cylinder on one side of the supporting pipe; Step three: the working hydraulic cylinder pushes the piston to slide, supports the colored gas stored in the box to rush out of the relief valve and into the tire, detects the tire repair condition, and selects whether to terminate the tire toe perforation work; Step four: when not selected to terminate, the support box moves horizontally as a whole, the track movement applies an inclined force to the drag reduction bracket, the drag reduction bracket drives the installed clamping plate to move longitudinally, and the clamping plate clamps and fixes the tire toe on one side of the limiting baffle; Step five: control the initial work of the air cylinder, push multiple perforating needles to move synchronously through the connecting frame, and perform hole opening on multiple positions of the tire toe supported and protected at one time; Step six: control the high work of the air cylinder, perform multiple position perforation processing on both sides of the tire toe at one time; Step seven: control the air cylinder to reset, the electromagnetic valve works to open, the gas supply pump works, the colored gas is injected into the support box, the piston is reset to push the support box to reset, and the clamping plate is automatically reset.

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