Tire post-inflation shaping device
By introducing vertical positioning and horizontal limiting devices into the rear tire inflation and shaping device, and using trigger components to automatically control the closing of the air intake valve, the problem of precise control of inflation volume is solved, thereby improving the shaping quality and efficiency of tire production.
Patent Information
- Application Number
- CN202511601465.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2025-12-26
AI Technical Summary
Existing tire rear inflation and shaping devices are difficult to control the inflation amount precisely, resulting in under-inflation or over-inflation, which affects tire quality and yield.
It employs a vertical positioning device and a horizontal limiting device, and automatically controls the closing of the air intake valve through a trigger component to ensure that the inflation reaches the preset shaping conditions.
It enables automatic control of tire inflation, reduces underinflation or overinflation, and improves the quality and efficiency of tire production.
Smart Images
Figure CN121200480A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tire shaping equipment, and in particular to a tire post-inflation shaping device. Background Technology
[0002] During the tire manufacturing process, the semi-finished tires after vulcanization have relatively poor hardness due to the high temperature immediately after vulcanization. If they are placed directly without taking appropriate measures, the tires will have difficulty maintaining their proper shape, which will have many adverse effects on the quality of the finished tires and subsequent processing and storage.
[0003] Currently, the industry widely uses after-inflation and shaping devices for tires to inflate and shape vulcanized semi-finished products. Common after-inflation and shaping devices generally have an upper and lower mounting plate structure. In operation, the vulcanized semi-finished tire is first placed on the lower mounting plate, and then the upper mounting plate is moved downward by a cylinder to fit the tire. Finally, air is injected into the tire through an air passage in the middle of the mounting plate, so that the tire expands and maintains its shape under the internal air pressure, achieving the purpose of shaping.
[0004] When inflating tires, the inflation level is often roughly judged by manual observation or a simple timer, and then the air intake is manually shut off to stop inflation. This method has significant drawbacks. On the one hand, manual observation makes it difficult to accurately control whether the tire's internal pressure has reached the optimal pre-set shaping conditions, which can easily lead to underinflation or overinflation. Underinflation will prevent the tire from fully shaping and may still result in poor shape retention; while overinflation may cause the tire to bulge or even crack due to excessive internal pressure, seriously affecting tire quality and yield.
[0005] Therefore, the tire rear inflation and shaping device has shortcomings in inflation control. It is necessary to develop an improved technology that can automatically control the closure of the air intake pipe according to the pre-set inflation conditions in order to improve the quality and efficiency of the rear inflation and shaping process in tire production. Summary of the Invention
[0006] In order to achieve automatic closure of the air intake pipe after inflation reaches the preset shaping conditions, thereby reducing under-inflation or over-inflation and improving the quality and efficiency of the post-inflation shaping process in tire production, this application provides a tire post-inflation shaping device.
[0007] The tire rear inflation and shaping device provided in this application adopts the following technical solution: A tire after-inflation and shaping device includes a frame, on which a vertical positioning device and a horizontal limiting device are mounted. The vertical positioning device includes a positioning post mounted on the frame, with a lower mounting plate on the post. The lower mounting plate is used to insert into the lower port of the tire blank to seal the lower port. The vertical positioning device also includes a drive cylinder mounted on the frame, vertically positioned. An upper mounting plate is connected to the piston rod end of the drive cylinder. The upper mounting plate is used to insert into the upper port of the tire blank to seal the upper port. The upper and lower mounting plates cooperate to limit the vertical movement of the tire blank. An air intake pipe is connected to the upper part of the tire, and an air intake valve is connected to the air intake pipe. The horizontal limiting assembly includes a limiting frame that is slidably connected to the frame. The limiting frame is used to abut against the tire crown, and the side of the tire carcass away from the limiting frame abuts against the inner wall of the frame. The limiting wheel and the inner wall of the frame cooperate to limit the tire carcass in the horizontal direction. The limiting frame is provided with a first triggering component that abuts against the tire crown, and a second triggering component that extends to the tire shoulder. When the air intake pipe inflates the tire carcass, the tire carcass expands to the point that the first triggering component or the second triggering component is triggered, thereby controlling the air intake valve on the air intake pipe to close.
[0008] By adopting the above technical solution, when using the tire, the tire blank is placed on the lower mounting plate, which is then inserted into the lower port. The piston rod of the drive cylinder extends, pushing the upper mounting plate to be inserted into the upper port of the tire blank. The upper and lower mounting plates fix the tire blank vertically and seal the upper and lower ports. After adjusting the position of the limit frame, the air inlet pipe inflates the tire blank. The tire blank expands under the action of air pressure. When the tire expands to abut against the first or second trigger component, the first or second trigger component controls the air inlet valve to close, thereby controlling the air inlet valve to close. After the inflation reaches the preset shaping conditions, the air inlet pipe is automatically closed, realizing automatic control of the air inlet pipe. This reduces the situation of under-inflation or over-inflation, and improves the quality and efficiency of the post-inflation shaping process in tire production.
[0009] Optionally, the first triggering component includes two guide posts slidably connected to the limiting frame, a connecting rod fixedly connected to both guide posts, and two limiting wheels fixedly connected to the connecting rod. The limiting wheels are used to contact the tire crown. A return spring is sleeved on one of the guide posts and is located between the limiting frame and the connecting rod. A first proximity switch is fixedly connected to the limiting frame. When the tire expands, it pushes the guide post to slide. When the guide post slides close to the first proximity switch, it controls the intake valve to close.
[0010] By adopting the above technical solution, when the user inflates the tire blank, the tire blank gradually expands as the air pressure increases. After the tire blank expands, it pushes the limiting wheel, and the limiting wheel pushes the guide column to slide. At the same time, it squeezes the return spring. When the guide column slides close to the first proximity switch, it indicates that the tire blank has expanded to the condition required for shaping. The air intake valve can be controlled to close. The tension of the return spring ensures that the limiting wheel always abuts against the tire crown.
[0011] Optionally, the second detection component includes a support rod connected to a limiting rod, a positioning frame connected to the support rod, a connecting frame slidably connected to the bottom of the positioning frame, two rollers fixedly connected to the connecting frame, the two rollers being stepped in height, the two rollers respectively abutting against the tire shoulder and tire sidewall, a first guide shaft and a second guide shaft fixedly connected to the top of the connecting frame, the first guide shaft and the second guide shaft slidably connected to the positioning frame, a sliding column fixedly connected to the connecting frame between the first guide shaft and the second guide shaft, the sliding column slidably connected to the positioning frame, a buffer spring sleeved on the sliding column between the connecting frame and the positioning frame, a second proximity switch set above the first guide shaft on the positioning frame, a first buffer column slidably connected to the positioning frame, a first return spring sleeved on the first buffer column, and the second proximity switch located at the bottom of the first buffer column. When the first guide shaft slides upward to approach the second proximity switch, the intake valve is automatically closed.
[0012] By adopting the above technical solution, when the user uses the tire, the rollers abut against the tire shoulder and sidewall respectively. When the tire carcass is inflated, the tire carcass gradually expands as the air pressure increases. When the tire carcass expands, it pushes the rollers to move upward. The rollers push the first guide shaft to slide upward, while squeezing the buffer spring. When the first guide shaft slides close to the second proximity switch, it indicates that the tire carcass has expanded to the conditions required for shaping. The air intake valve can be controlled to close. The tension of the buffer spring ensures that the rollers always abut against the tire crown.
[0013] Optionally, a screw is rotatably connected to the top of the frame, the screw is horizontally oriented, a limit frame is threaded onto the screw, one end of the screw extends out of the frame and is fixedly connected to a hand crank; the bottom of the limit frame is a telescopic rod, which can vertically adjust the height of the limit wheel; a horizontal mounting groove is provided on the support rod, the positioning frame is slidably connected to the mounting groove, and a nut is threaded onto the positioning frame after it passes through the mounting groove.
[0014] By adopting the above technical solution, when using the device, the user can drive the screw to rotate by turning the hand crank, thereby adjusting the position of the limit frame on the frame and the distance between the limit wheel and the inner wall of the frame to accommodate tires of different sizes. The bottom of the limit frame is a telescopic rod, which can vertically adjust the height of the limit wheel. Loosening the nut on the mounting slot can adjust the horizontal position of the positioning frame and adjust the position of the roller. The limit wheel and the roller are always in contact with the tire blank, which can accommodate tire blanks of different sizes and shape different tire blanks.
[0015] Optionally, the upper mounting plate includes a positioning plate fixedly connected to the end of the piston rod of the drive cylinder, a sealing plate rotatably connected to the bottom of the positioning plate, a drive assembly for driving the upper mounting plate to rotate on the positioning plate, and a lower mounting plate rotatably connected to the positioning column; the side wall of the frame is provided with a shaping assembly to limit the excessive expansion of the tire blank; a third trigger assembly is provided on the limiting frame, the third trigger assembly is used to detect whether the tire blank is flat, and when a protrusion is detected in the tire blank, it controls the shaping assembly to shape the tire blank.
[0016] By adopting the above technical solution, when the user uses the tire, air is blown into the tire blank to increase the internal pressure, causing the tire blank to expand. The third trigger component detects whether the surface of the tire blank is expanding excessively outward. When excessive outward expansion of the tire blank is detected, the drive component is controlled to drive the sealing disc to rotate, which can drive the tire to rotate. At the same time, the shaping component is controlled to limit the outer side of the tire, restricting the tire blank from expanding excessively, ensuring that the tire blank is shaped according to the predetermined size and shape standards, so that the key dimensions such as the outer diameter and cross-sectional width of the tire meet the requirements.
[0017] Optionally, the drive assembly includes a drive motor fixedly connected to the positioning disk, a gear fixedly connected to the output shaft of the drive motor, an external gear ring fixedly connected to the outside of the sealing disk, and the gear and the external gear ring meshing; a fixing ring is fixedly connected to the bottom of the positioning disk, the inner ring of the fixing ring has a slot, and a retaining ring is fixedly connected to the top of the sealing ring, the retaining ring being engaged in the slot and able to rotate within the slot.
[0018] By adopting the above technical solution, when the user uses the vehicle, the drive motor works, which drives the gear to rotate. The gear rotates, which drives the gear ring to rotate, which in turn drives the sealing disc to rotate. The sealing disc presses against the tire blank, which in turn drives the tire blank to rotate, making it easier for the shaping component to straighten the outer side of the tire.
[0019] Optionally, the third triggering component includes a third triggering switch connected to the positioning frame. The third triggering switch is located directly above the second guide shaft. A second buffer post is slidably connected to the positioning frame. The third triggering switch is fixedly connected to the bottom of the second buffer post. A second return spring is sleeved on the second buffer post.
[0020] By adopting the above technical solution, when the user uses the tire, the two rollers abut against the tire shoulder and tire sidewall respectively. When the tire carcass is inflated, the tire carcass gradually expands as the air pressure increases. When the tire carcass expands, it pushes the rollers to move upward. The rollers push the second guide shaft to slide upward, while squeezing the second return spring. When the second guide shaft slides close to the third proximity switch, it indicates that the tire carcass has expanded to the point where a bulge appears on the surface. The surface of the tire carcass is uneven and needs to be shaped, thereby controlling the operation of the shaping component.
[0021] Optionally, the shaping assembly includes a shaping cylinder fixedly connected to the frame. The shaping cylinder is horizontally positioned, and its piston rod extends into the frame and is fixedly connected to a shaping connecting rod. A pair of wires is rotatably connected to the shaping connecting rod, and the axial direction of the pair of wires is vertical. A motor is fixedly connected to the top of the shaping connecting rod, and the output shaft of the motor is fixed to the pair of wires. An upper slider and a lower slider are threadedly connected near both ends of the pair of wires. An upper shaping plate is bolted to the upper slider, and a lower shaping plate is bolted to the lower slider. The upper and lower shaping plates are used to fasten onto the outer surface of the tire blank.
[0022] By adopting the above technical solution, when the shaping cylinder receives a signal from the third inductive switch, it controls the rotation of the guide wire, so that the upper and lower shaping plates abut against the tire sidewall, tire shoulder, and tire crown respectively. The drive motor works, which drives the gear to rotate. The gear rotation drives the gear ring to rotate, which in turn drives the tire blank to rotate. The upper and lower shaping plates limit the outer side of the tire blank, restricting the tire blank from expanding excessively, and ensuring that the tire blank is shaped according to the predetermined size and shape standards, so that the tire's outer diameter, cross-sectional width, and other key dimensions meet the requirements.
[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. An intake pipe is connected to the upper mounting plate, and an intake valve is connected to the intake pipe. A first trigger assembly is provided on the limiting frame, abutting against the tire crown. A second trigger assembly is provided on the limiting frame, extending to the tire shoulder. When the intake pipe inflates the tire carcass, the tire carcass expands to the point where it triggers either the first or second trigger assembly, controlling the intake valve on the intake pipe to close. Now, the tire carcass is placed on the lower mounting plate, so that the lower mounting plate is inserted into the lower port. The piston rod of the drive cylinder extends, pushing the upper mounting plate to be inserted into the upper port of the tire carcass. The upper mounting plate and the lower mounting plate... The tray fixes the tire blank vertically and seals the upper and lower ports. The position of the limit frame is adjusted, and the air inlet pipe inflates the tire blank. The tire blank expands under the action of air pressure. When the tire expands to a point where it touches the first or second trigger component, the first or second trigger component controls the air inlet valve to close, thereby controlling the air inlet valve to close. After the inflation reaches the preset shaping conditions, the air inlet pipe is automatically closed, realizing automatic control of the air inlet pipe. This reduces the situation of under-inflation or over-inflation and improves the quality and efficiency of the post-inflation shaping process in tire production. 2. The upper mounting plate includes a positioning plate fixedly connected to the end of the piston rod of the drive cylinder. A sealing plate is rotatably connected to the bottom of the positioning plate. A drive assembly for driving the upper mounting plate to rotate is provided on the positioning plate. The lower mounting plate is rotatably connected to the positioning column. The side wall of the frame is provided with a shaping assembly to limit the excessive expansion of the tire blank. A third trigger assembly is provided on the limiting frame. The third trigger assembly is used to detect whether the tire blank is flat. When the third trigger assembly detects whether the surface of the tire blank is excessively expanded outward, it controls the drive assembly to drive the sealing plate to rotate, which can drive the tire to rotate. At the same time, it controls the shaping assembly to limit the outer side of the tire, restricting the excessive expansion of the tire blank, ensuring that the tire blank is shaped according to the predetermined size and shape standards, so that the key dimensions such as the outer diameter and cross-sectional width of the tire meet the requirements. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is a schematic diagram of the drive cylinder and upper mounting plate in the vertical positioning device; Figure 4 yes Figure 2 Enlarged view of part A; Figure 5 This is a schematic diagram of the horizontal limiting device; Figure 6 yes Figure 2 Enlarged view of part B; Figure 7 This is a schematic diagram of the shaping mechanism; Figure 8 yes Figure 2 Enlarged view of part C.
[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Vertical positioning device; 21. Positioning column; 22. Lower mounting plate; 23. Drive cylinder; 24. Upper mounting plate; 241. Positioning plate; 2411. Fixing ring; 2412. Slot; 242. Sealing plate; 2421. Snap ring; 243. Drive motor; 244. Gear; 245. External gear ring; 25. Air inlet pipe; 251. Air inlet valve; 26. Air outlet pipe; 261. Switch valve; 3. Horizontal limiting device; 31. Screw; 311. Hand crank; 32. Limiting frame; 33. Support rod; 331. Mounting slot; 34. Positioning frame; 35. First trigger assembly; 351. Guide column; 352. Connecting rod 353. Limiting wheel; 354. Return spring; 355. First proximity switch; 36. Second trigger assembly; 361. Roller; 362. First guide shaft; 363. Second guide shaft; 364. Sliding column; 365. Buffer spring; 366. Second proximity switch; 367. First buffer column; 368. First return spring; 37. Third trigger assembly; 371. Third trigger switch; 372. Second buffer column; 373. Second return spring; 4. Shaping mechanism; 41. Shaping cylinder; 42. Shaping connecting rod; 43. Wire alignment; 44. Shaping motor; 45. Upper slider; 46. Lower slider; 47. Upper shaping plate; 48. Lower shaping plate. Detailed Implementation
[0026] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.
[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0028] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0029] This application discloses a tire rear inflation and shaping device, referring to... Figure 1 and Figure 2 The system includes a frame 1, a vertical positioning device 2, and a horizontal limiting device 3. Both the vertical positioning device 2 and the horizontal limiting device 3 are mounted on the frame 1. The vertical positioning device 2 is used for vertical positioning and sealing of the tire blank, while the horizontal limiting device 3 is used for horizontal limiting of the tire blank. It can also control the air intake pipe 25 to automatically close according to the tire blank's expansion. This achieves automatic control of air intake after the inflation reaches the preset shaping conditions, reducing the situation of under-inflation or over-inflation, and improving the quality and efficiency of the post-inflation shaping process in tire production.
[0030] Reference Figure 3 and Figure 4 Specifically, the vertical positioning device 2 includes a positioning post 21. The positioning post 21 is mounted on the frame 1, and a lower mounting plate 22 is installed on the positioning post 21. The lower mounting plate 22 and the positioning post 21 are rotatably connected. The lower mounting plate 22 is typically cylindrical, and its diameter matches the inner diameter of the lower port of the tire blank. It can be made of a high-strength metal, such as stainless steel, to ensure its durability and sealing performance. The lower mounting plate 22 is used to insert into the lower port of the tire blank, thereby sealing the lower port. In practical applications, the surface of the lower mounting plate 22 can be smoothed to reduce friction with the tire blank, and a sealing rubber ring can also be installed to further enhance the sealing effect.
[0031] The vertical positioning device 2 also includes a drive cylinder 23, which is located on the top of the frame 1 and is vertically oriented. The piston rod of the drive cylinder extends downwards into the frame 1 and is connected to an upper mounting plate 24. The upper mounting plate 24, also made of stainless steel, is similar in shape to the lower mounting plate 22 and is used to insert into the upper port of the tire carcass to seal it. The upper mounting plate 24 and the lower mounting plate 22 cooperate to limit the vertical positioning of the tire carcass. An air inlet pipe 25 is connected to the upper mounting plate 24 for inflating the tire carcass. An air inlet valve 251 is connected to the air inlet pipe 25, which can be an air inlet valve 251 for automatic control. Furthermore, an exhaust pipe is fixedly connected to the upper mounting plate 24, and a switch valve 261 is installed on the exhaust pipe to discharge gas from the tire carcass. The combination of positioning post 21 and drive cylinder 23 enables the upper mounting plate 24 and lower mounting plate 22 to accurately position and seal the tire blank vertically, providing a foundation for subsequent inflation and shaping operations.
[0032] Furthermore, the upper mounting plate 24 includes a positioning plate 241 and a sealing plate 242. The positioning plate 241 is fixedly connected to the end of the piston rod of the drive cylinder 23, and the sealing plate 242 is rotatably connected to the bottom of the positioning plate 241. The positioning plate 241 is provided with a drive assembly for driving the upper mounting plate 24 to rotate. The drive assembly includes a drive motor 243, a gear 244, and an external gear ring 245. The drive motor 243 is fixedly connected to the positioning plate 241, and the gear 244 is fixedly connected to its output shaft. The external gear ring 245 is fixedly connected to the outside of the sealing plate 242, and the gear 244 and the external gear ring 245 mesh. When the drive motor 243 works, it can drive the gear 244 to rotate, and the rotation of the gear 244 drives the gear ring to rotate, which in turn drives the sealing plate 242 to rotate. A fixing ring 2411 is fixedly connected to the bottom of the positioning disc 241. The inner ring of the fixing ring 2411 has a groove 2412. A retaining ring 2421 is fixedly connected to the top of the sealing ring. The retaining ring 2421 is engaged in the groove 2412 and can rotate within the groove 2412. This structure ensures the rotational flexibility of the sealing disc 242 and enhances the sealing effect.
[0033] Reference Figure 2 and Figure 5 Specifically, the horizontal limiting device 3 includes a screw 31 and a limiting frame 32. The screw 31 is rotatably connected to the frame 1, and its axial direction is horizontal. The limiting frame 32 is threadedly connected to the screw 31. One end of the screw 31 extends out of the frame 1 and is fixedly connected to a hand crank 311. The limiting frame 32 is provided with a first trigger component 35 that abuts against the tire crown and a second trigger component 36 that extends to the tire shoulder. When the air intake pipe 25 inflates the tire carcass, and the tire carcass expands to trigger the first trigger component 35 or the second trigger component 36, it can control the air intake valve 251 on the air intake pipe 25 to close.
[0034] The bottom of the limiting frame 32 is a telescopic rod, which can vertically adjust the height of the limiting wheel 353. A horizontally set support rod 33 is vertically slidably connected to the limiting frame 32. A horizontal mounting groove 331 is opened on the support rod 33. A positioning frame 34 is connected to the bottom of the support frame. The positioning frame 34 is slidably connected in the mounting groove 331. After the positioning frame 34 passes through the mounting groove 331, a nut is threadedly connected to it.
[0035] The first triggering component 35 includes two guide posts 351, a connecting rod 352, a limiting wheel 353, a return spring 354, and a first proximity switch 355. The two guide posts 351 are slidably connected to the limiting frame 32. The guide posts 351 are typically cylindrical, made of carbon steel, and chrome-plated to improve their wear resistance and corrosion resistance. A connecting rod 352, which can be a square steel tube, is fixedly connected to both guide posts 351. Two limiting wheels 353 are fixedly connected to the connecting rod 352. The limiting wheels 353 are typically made of rubber, possessing good elasticity and wear resistance, and are used to abut against the tire crown. A return spring 354 is fitted onto one of the guide posts 351, located between the limiting frame 32 and the connecting rod 352. The return spring 354 ensures that the limiting wheel 353 always abuts against the tire crown. A first proximity switch 355 is fixedly connected to the limit frame 32. When the tire blank expands, it pushes the guide column 351 to slide. When the guide column 351 slides close to the first proximity switch 355, it indicates that the tire blank has expanded to the condition required for shaping, and the air intake valve 251 can be controlled to close.
[0036] Reference Figure 5 and Figure 6The second trigger assembly 36 includes a support rod 33, rollers 361, a first guide shaft 362, a second guide shaft 363, a sliding column 364, a buffer spring 365, a second proximity switch 366, a first buffer column 367, and a first return spring 368. The support rod 33 is connected to the limit rod and can be made of alloy steel, providing high strength. A positioning frame 34 is connected to the support rod 33. The positioning frame 34 can be made of cast iron, providing good stability. A connecting frame slides to the bottom of the positioning frame 34, and two rollers 361 are fixedly connected to the connecting frame. The two rollers 361 are stepped in height and respectively abut against the tire shoulder and tire sidewall. The rollers 361 can be made of polyurethane, providing good elasticity and wear resistance. A first guide shaft 362 and a second guide shaft 363 are fixedly connected to the top of the connecting frame. The first guide shaft 362 and the second guide shaft 363 are slidably connected to the positioning frame 34. A sliding column 364 is fixedly connected between the first guide shaft 362 and the second guide shaft 363 and is slidably connected to the positioning frame 34. A buffer spring 365 is sleeved on the sliding column 364 between the connecting frame and the positioning frame 34. The function of the buffer spring 365 is to keep the roller 361 in contact with the tire crown. A second proximity switch 366 is provided above the first guide shaft 362 on the positioning frame 34. A first buffer column 367 is slidably connected to the positioning frame 34. A first return spring 368 is sleeved on the first buffer column 367. The second proximity switch 366 is located at the bottom of the first buffer column 367. When the tire carcass expands after being inflated, it pushes the roller 361 to move upward. The roller 361 pushes the first guide shaft 362 to slide upward, while squeezing the buffer spring 365. When the first guide shaft 362 slides close to the second proximity switch 366, it indicates that the tire carcass has expanded to the conditions required for shaping, and the air intake valve 251 can be controlled to close.
[0037] In addition, a third trigger assembly 37 is provided on the limiting frame 32, and a shaping assembly is provided on the side wall of the frame 1 to limit the excessive expansion of the tire blank. The third trigger assembly 37 is used to detect whether the tire blank is flat. When a protrusion is detected in the tire blank, the shaping assembly is controlled to shape the tire blank. The third trigger assembly 37 includes a third trigger switch 371, a second buffer post 372, and a second return spring 373. The third trigger switch 371 is connected to the positioning frame 34 and is located directly above the second guide shaft 363. The second buffer post 372 is slidably connected to the positioning frame 34. The third trigger switch 371 is fixedly connected to the bottom of the second buffer post 372. The second return spring 373 is sleeved on the second buffer post 372. When the tire carcass expands after being inflated, it pushes the roller 361 to move upward. The roller 361 pushes the second guide shaft 363 to slide upward, while squeezing the second return spring 373. When the second guide shaft 363 slides close to the third proximity switch, it indicates that the tire carcass has expanded to the point that the surface bulges out. The surface of the tire carcass is uneven and needs to be shaped to control the operation of the shaping component.
[0038] Reference Figure 7 and Figure 8 The shaping mechanism 4 includes a shaping cylinder 41, a shaping connecting rod 42, a guide wire 43, a shaping motor 44, an upper slider 45, a lower slider 46, an upper shaping plate 47, and a lower shaping plate 48. The shaping cylinder 41 is fixedly connected to the frame 1 and is horizontally positioned. Its piston rod extends into the frame 1 and is fixedly connected to the shaping connecting rod 42. The guide wire 43 is rotatably connected to the shaping connecting rod 42, and its axial direction is vertical. The shaping motor 44 is fixedly connected to the top of the shaping connecting rod 42, and the output shaft of the shaping motor 44 is fixed to the guide wire 43. The upper slider 45 and the lower slider 46 are threadedly connected near both ends of the guide wire 43. The upper slider 45 is bolted to the upper shaping plate 47, and the lower slider 46 is bolted to the lower shaping plate 48. The upper shaping plate 47 and the lower shaping plate 48 are used for fastening onto the tire blank. When the shaping cylinder 41 receives a signal from the third induction switch, it controls the shaping cylinder 41 to drive the wire 43 to rotate, so that the upper shaping plate 47 and the lower shaping plate 48 respectively abut against the tire sidewall, tire shoulder and tire crown, thereby limiting the outer side of the tire blank and restricting the tire blank from expanding excessively.
[0039] The implementation principle of this embodiment is as follows: When the user uses the tire, the tire blank is first placed on the lower mounting plate 22, so that the lower mounting plate 22 is inserted into the lower port. The piston rod of the drive cylinder 23 extends, pushing the upper mounting plate 24 to be inserted into the upper port of the tire blank. The upper mounting plate 24 and the lower mounting plate 22 fix the tire blank vertically and seal the upper and lower ports. After adjusting the position of the limit frame 32, the air inlet pipe 25 inflates the tire blank, and the tire blank expands under the action of air pressure. When the tire expands to abut against the first trigger component 35 or the second trigger component 36, the first trigger component 35 or the second trigger component 36 controls the air inlet valve 251 to close, thereby controlling the air inlet valve 251 to close. After the inflation reaches the preset shaping conditions, the air inlet pipe 25 is automatically closed, realizing the automatic control of the air inlet pipe 25, reducing the situation of under-inflation or over-inflation, and improving the quality and efficiency of the post-inflation shaping stage in the tire production process.
[0040] When the second guide shaft 363 approaches the third proximity switch, it controls the drive motor 243 to drive the sealing disc 242 to rotate, which in turn drives the tire to rotate. At the same time, it controls the shaping mechanism 4 to limit the outer side of the tire, restricting the tire blank from over-expanding and ensuring that the tire blank is shaped according to the predetermined size and shape standards. This ensures that the tire's outer diameter, cross-sectional width, and other key dimensions meet the requirements, further improving the quality and efficiency of tire inflation and shaping.
[0041] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A tire rear inflation and shaping device, comprising a frame (1), characterized in that: The frame (1) is equipped with a vertical positioning device (2) and a horizontal limiting device (3); The vertical positioning device (2) includes a positioning column (21) set on the frame (1), and a lower mounting plate (22) is provided on the positioning column (21). The lower mounting plate (22) is used to be inserted into the lower port of the tire blank to seal the lower port. The vertical positioning device (2) further includes a drive cylinder (23) mounted on the frame (1). The drive cylinder (23) is vertically mounted. The piston rod end of the drive cylinder (23) is connected to an upper mounting plate (24). The upper mounting plate (24) is used to insert into the upper port of the tire blank to seal the upper port. The upper mounting plate (24) and the lower mounting plate (22) cooperate to limit the vertical movement of the tire blank. An air inlet pipe (25) is connected to the upper mounting plate (24). An air inlet valve (251) is connected to the air inlet pipe (25). The horizontal limiting assembly includes a limiting frame (32) slidably connected to the frame (1), the limiting frame (32) abutting against the tire crown, the side of the tire blank away from the limiting frame (32) abutting against the inner wall of the frame (1), and the limiting wheel (353) and the inner wall of the frame (1) cooperating to limit the tire blank in the horizontal direction. The limiting frame (32) is provided with a first trigger component (35) that abuts against the tire crown, and the limiting frame (32) is provided with a second trigger component (36) that extends to the tire shoulder. When the air intake pipe (25) inflates the tire embryo, the tire embryo expands to trigger the first trigger component (35) or the second trigger component, and then controls the air intake valve (251) on the air intake pipe (25) to close. According to claim 1, a tire rear inflation and shaping device is characterized in that: the first triggering component (35) includes two guide posts (351) slidably connected to the limiting frame (32), a connecting rod (352) is fixedly connected to the two guide posts (351), two limiting wheels (353) are fixedly connected to the connecting rod (352), the limiting wheels (353) are used to contact the tire crown, a return spring (354) is sleeved on one of the guide posts (351), the return spring (354) is located between the limiting frame (32) and the connecting rod (352), a first proximity switch (355) is fixedly connected to the limiting frame (32), when the tire blank expands, it pushes the guide post (351) to slide, and when the guide post (351) slides close to the first proximity switch (355), it controls the intake valve (251) to close.
2. The tire rear inflation and shaping device according to claim 1, characterized in that: The second detection component includes a support rod (33) connected to a limiting rod, a positioning frame (34) connected to the support rod (33), a connecting frame slidably connected to the bottom of the positioning frame (34), two rollers (361) fixedly connected to the connecting frame, the two rollers (361) being stepped in height, the two rollers (361) respectively abutting against the tire shoulder and tire sidewall, a first guide shaft (362) and a second guide shaft (363) fixedly connected to the top of the connecting frame, the first guide shaft (362) and the second guide shaft (363) being slidably connected to the positioning frame (34), and a sliding joint fixedly connected between the first guide shaft (362) and the second guide shaft (363) of the connecting frame. The sliding column (364) is slidably connected to the positioning frame (34). The sliding column (364) is located between the connecting frame and the positioning frame (34) and is fitted with a buffer spring (365). The positioning frame (34) is located above the first guide shaft (362) and is equipped with a second proximity switch (366). The positioning frame (34) is slidably connected to the first buffer column (367). The first buffer column (367) is fitted with a first return spring (368). The second proximity switch is located at the bottom of the first buffer column (367). When the first guide shaft (362) slides upward to approach the second proximity switch (366), the control intake valve (251) is automatically closed.
3. The tire rear inflation and shaping device according to claim 3, characterized in that: The top of the frame (1) is rotatably connected to a screw (31), the screw (31) is horizontally axially set, the limit frame (32) is threadedly connected to the screw (31), and one end of the screw (31) extends out of the frame (1) and is fixedly connected to a hand crank (311). The bottom of the limiting frame (32) is a telescopic rod, which can vertically adjust the height of the limiting wheel (353); The support rod (33) has a horizontal mounting groove (331), and the positioning frame (34) is slidably connected in the mounting groove (331). The positioning frame (34) passes through the mounting groove (331) and is threaded with a nut.
4. The tire rear inflation and shaping device according to claim 1, characterized in that: The upper mounting plate (24) includes a positioning plate (241) fixedly connected to the end of the piston rod of the drive cylinder (23), a sealing plate (242) rotatably connected to the bottom of the positioning plate (241), a drive assembly for driving the upper mounting plate (24) to rotate on the positioning plate (241), and a lower mounting plate (22) rotatably connected to the positioning column (21). The sidewall of the frame (1) is provided with a shaping component to limit the excessive expansion of the embryo; The limiting frame (32) is provided with a third trigger component (37), which is used to detect whether the embryo is flat. When a protrusion is detected in the embryo, the shaping component is controlled to shape the embryo.
5. A tire rear inflation and shaping device according to claim 5, characterized in that: The drive assembly includes a drive motor (243) fixedly connected to the positioning disk (241), a gear (244) fixedly connected to the output shaft of the drive motor (243), and an external gear ring (245) fixedly connected to the outside of the sealing disk (242). The gear (244) and the external gear ring (245) mesh. The bottom of the positioning disk (241) is fixedly connected to a fixing ring (2411), the inner ring of the fixing ring (2411) is provided with a slot (2412), and the top of the sealing ring is fixedly connected to a retaining ring (2421). The retaining ring (2421) is engaged in the slot (2412) and can rotate in the slot (2412).
6. A tire rear inflation and shaping device according to claim 5, characterized in that: The third trigger assembly (37) includes a third trigger switch (371) connected to the positioning frame (34). The third trigger switch (371) is located directly above the second guide shaft (363). A second buffer post (372) is slidably connected to the positioning frame (34). The third trigger switch (371) is fixedly connected to the bottom of the second buffer post (372). A second return spring (373) is sleeved on the second buffer post (372).
7. A tire rear inflation and shaping device according to claim 5, characterized in that: The shaping assembly includes a shaping cylinder (41) fixedly connected to the frame (1). The shaping cylinder (41) is horizontally arranged. The piston rod of the shaping cylinder (41) extends into the frame (1) and is fixedly connected to a shaping connecting rod (42). A pair of wires (43) is rotatably connected to the shaping connecting rod (42). The axial direction of the pair of wires (43) is vertical. A shaping motor (44) is fixedly connected to the top of the shaping connecting rod (42). The output shaft of the shaping motor (44) is fixed to the pair of wires (43). An upper slider (45) and a lower slider (46) are threadedly connected to the pair of wires (43) near both ends. An upper shaping plate (47) is bolted to the upper slider (45). A lower shaping plate (48) is bolted to the lower slider (46). The upper shaping plate (47) and the lower shaping plate (48) are used to fasten to the outside of the tire blank.