Tire production method and device

Abstract

The present invention provides a tire production method and apparatus. Among them, the tire production apparatus includes a main shaft and an inverse wrapping rod assembly, a backing plate assembly, a locking block assembly, and a center drum assembly sleeved outside the main shaft. The tire production method includes: adjusting the initial diameter sizes of the backing plate assembly, the locking block assembly, and the center drum assembly, and performing material pasting; installing a tire steel rim outside the locking block assembly, adjusting the diameter of the locking block assembly to increase, and making the locking block assembly abut and lock the tire steel rim; adjusting the diameters of the backing plate assembly and the center drum assembly so that the outer surfaces of the backing plate assembly, the locking block assembly, and the center drum assembly are flush; the inverse wrapping rod assembly performs a flipping action to bond the rubber material to the side of the tire, and after the bonding is completed, the inverse wrapping rod assembly performs a reverse action and resets; adjusting the diameters of the backing plate assembly, the locking block assembly, and the center drum assembly to decrease, and removing the tire from the main shaft. The present invention solves the problem that it is time-consuming and laborious to replace the size level of the mechanical forming drum in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of tire processing, and in particular, to a tire production method and device. Background Art

[0002] At present, the forming drums used for tire forming are divided into a bladder drum and a mechanical drum. The main difference between these two drums lies in the different ways of reverse wrapping. The bladder drum uses an inflated reverse wrapping bladder for reverse wrapping, and the mechanical drum uses a reverse wrapping rod for reverse wrapping. In terms of tire forming efficiency, the mechanical drum is much higher than the bladder drum. Therefore, the mechanical drum has a large market share on semi-steel forming machines. However, the structure of the mechanical forming drum is complex, and when changing the size level, it is necessary to replace the side drum to achieve it. Most general-scale tire factories produce according to orders, so the number of times of replacing the side drum is relatively large. The time for replacing the side drum once is generally about 20 - 30 minutes. This time for replacing the side drum is a relatively large loss for tire factories. Summary of the Invention

[0003] The main object of the present invention is to provide a tire production method and device to solve the problem that it is time-consuming and laborious to change the size level of the existing mechanical forming drum.

[0004] To achieve the above object, according to one aspect of the present invention, a tire production method is provided. The tire production device includes a main shaft and a reverse wrapping rod assembly, a backing plate assembly, a locking block assembly, and a middle drum assembly sleeved outside the main shaft. The tire production method includes: adjusting the initial diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly, and performing material pasting; installing a tire steel ring outside the locking block assembly, adjusting the diameter of the locking block assembly to increase, and making the locking block assembly abut against and lock the tire steel ring; adjusting the diameters of the backing plate assembly and the middle drum assembly so that the outer surfaces of the backing plate assembly, the locking block assembly, and the middle drum assembly are flush and form a flat and unified surface; the reverse wrapping rod assembly performs a flipping action to attach the rubber material to the side of the tire, and after the attachment is completed, the reverse wrapping rod assembly performs a reverse action and resets; adjusting the diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly to decrease, and removing the tire from the main shaft.

[0005] Further, when adjusting the initial diameter, if the size of the tire to be processed is a first preset size, the backing plate assembly is contracted, and the locking block assembly and the middle drum assembly are adjusted to the minimum diameter. If the size of the tire to be processed is a second preset size greater than the first preset size, the backing plate assembly is expanded, and the locking block assembly and the middle drum assembly are adjusted to an intermediate diameter, and there is at least one intermediate diameter.

[0006] Further, before the reverse wrapping rod assembly performs a flipping action, the advancing and retreating driving member of the backing plate assembly drives the backing plate block of the backing plate assembly to move axially, and makes the backing plate block avoid the roller of the reverse wrapping rod assembly. Then the reverse wrapping rod assembly performs a flipping action, and the roller of the reverse wrapping rod assembly squeezes the rubber material to attach the rubber material to the side of the tire.

[0007] Further, when adjusting the diameter of the backing plate assembly, the first inclined surface of the expansion driving member of the backing plate assembly interacts with the second inclined surface of the backing plate block of the backing plate assembly, and changes the diameter of the backing plate block to the required size.

[0008] Further, when adjusting the diameter of the locking block assembly and / or the middle drum assembly, by applying pressure to different air chambers of the cylinder of the driving assembly of the locking block assembly or the middle drum assembly, the piston of the driving assembly is driven to move different distances, so that the transmission assembly of the locking block assembly or the middle drum assembly drives the diameter-changing member of the locking block assembly or the middle drum assembly to change to the minimum diameter, the middle diameter or the maximum diameter; or by applying pressure into the cylinder of the driving assembly, the piston is driven to move to the contraction position or the expansion position, or no pressure is applied into the cylinder, and the piston moves to the middle position under the action of the elastic member of the driving assembly, so that the transmission assembly drives the diameter-changing member to change to the minimum diameter, the maximum diameter or the middle diameter; or by driving the lead screw of the driving assembly to rotate by the motor of the driving assembly, and the lead screw drives the nut of the driving assembly to move axially, so that the diameter-changing member changes to the minimum diameter, the middle diameter or the maximum diameter.

[0009] Further, when adjusting the diameters of the backing plate assembly, the locking block assembly and the middle drum assembly, a step adjustment or a stepless adjustment method is adopted for adjustment.

[0010] According to another aspect of the present invention, a tire production device is provided, including: a main shaft; a reverse wrapping rod assembly for processing the side of a tire; a backing plate assembly sleeved on the main shaft, and the backing plate assembly can expand and contract along the radial direction of the main shaft; a locking block assembly sleeved on the main shaft, and the locking block assembly can expand and contract along the radial direction of the main shaft; a middle drum assembly sleeved on the main shaft, and the middle drum assembly can expand and contract along the radial direction of the main shaft. There are multiple backing plate assemblies, locking block assemblies and reverse wrapping rod assemblies, and the locking block assemblies, the backing plate assemblies and the reverse wrapping rod assemblies are sequentially arranged on both sides of the middle drum assembly in the direction away from the middle drum assembly.

[0011] Further, the backing plate assembly includes: an expansion driving member arranged along the axial direction of the main shaft; a backing plate block in contact with the output end of the expansion driving member, and the backing plate block can expand and contract along the radial direction of the main shaft under the drive of the expansion driving member.

[0012] Further, the output end of the expansion driving member has a first inclined surface, and the inner side of the backing plate block has a second inclined surface, and the first inclined surface and the second inclined surface are in contact and extrusion fit, and the expansion driving member drives the backing plate block to expand and contract by extruding the second inclined surface with the first inclined surface.

[0013] Further, one end of the reverse wrapping rod assembly close to the middle drum assembly has a roller, and the backing plate assembly further includes an advancing and retreating driving member, and the advancing and retreating driving member is drivingly connected to the backing plate block and can drive the backing plate block to move along the axial direction of the main shaft to block or avoid the roller.

[0014] Further, the lock block assembly and / or the middle drum assembly includes: a driving assembly; a transmission assembly, the transmission assembly being drivingly connected to the driving assembly; a diameter-changing member, the diameter-changing member being connected to the transmission assembly and capable of expanding and contracting radially along the main shaft under the drive of the transmission assembly to switch between a minimum diameter and a maximum diameter.

[0015] Further, the driving assembly is arranged along the axial direction of the main shaft, the transmission assembly is bent, one end of the transmission assembly is connected to the output end of the driving assembly, and the other end of the transmission assembly is connected to the diameter-changing member.

[0016] Further, the driving assembly includes: a cylinder; a piston, the piston being movably arranged in the cylinder and connected to the transmission assembly, the cylinder being capable of forming a plurality of air cavities with different sizes, when pressurized air is introduced into air cavities with different sizes, the piston moves different distances, and the piston moves between a contracted position and an expanded position at the end of the cylinder and an intermediate position between the contracted position and the expanded position, so that the diameter-changing member forms a minimum diameter, a maximum diameter, and at least one intermediate diameter between the minimum diameter and the maximum diameter respectively.

[0017] Further, the driving assembly includes: a cylinder; a piston, the piston being movably arranged in the cylinder; an elastic member, the elastic member being in contact with the piston and connected to the transmission assembly, the piston has a contracted position and an expanded position at the end of the cylinder and an intermediate position between the contracted position and the expanded position, and when the elastic member is in a natural state, the piston is located at the intermediate position, when the piston is located at the contracted position, the intermediate position, and the expanded position, the diameter-changing member forms a minimum diameter, at least one intermediate diameter, and a maximum diameter with diameters increasing in sequence respectively.

[0018] Further, the driving assembly includes: a motor; a lead screw, the lead screw being drivingly connected to the motor and rotating under the drive of the motor; a nut, the nut being in threaded engagement with the lead screw and connected to the transmission assembly, the lead screw drives the nut to axially move between a contracted position, an intermediate position, and an expanded position, so that the diameter-changing member forms a minimum diameter, at least one intermediate diameter, and a maximum diameter with diameters increasing in sequence respectively.

[0019] Applying the technical solution of the present invention, radial expansion and contraction can be achieved through the combination of the backing plate assembly, the locking block assembly, and the middle drum assembly. As a result, a cylindrical outer surface can be formed at each radial position of the three components, which is used to fit the semi-component materials of the tire. During use, the initial diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly are adjusted according to the size of the tire to be processed, so that the cylindrical outer surface formed by the three components can meet the processing requirements such as material pasting. Then, operations such as installing the steel ring and pasting the material can be carried out. By adjusting and expanding the diameter formed by the three components, the steel ring can be fixed and a flat circular surface can be formed. Then, the tire can be processed and formed by means of the reverse wrapping rod assembly and inflation. After processing, the diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly are reduced to remove the tire. Since the diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly can all be adjusted, when processing tires of different sizes, only the diameters of the three components need to be adjusted accordingly. Through the above setting method, the tire production device can process tires of multiple sizes without the need to replace the side drum, and only the diameter needs to be adjusted, thus simply and quickly realizing the processing of tires of multiple sizes, which not only saves time and effort but also improves the processing efficiency and avoids various losses caused by replacing the side drum. At the same time, one device can process tires of two sizes, reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 shows a flowchart of the tire production method of the present invention;

[0022] Figure 2 shows a structural schematic diagram of the tire production device of the present invention;

[0023] Figure 3 shows Figure 2 an enlarged view of the P position.

[0024] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0025] 10, main shaft; 20, reverse wrapping rod assembly; 21, roller; 30, backing plate assembly; 31, expansion driving member; 32, backing plate block; 33, advancing and retreating driving member; 40, locking block assembly; 41, driving assembly; 411, driving member; 412, output member; 413, elastic member; 42, transmission assembly; 43, diameter-changing member; 50, middle drum assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0028] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are generally in reference to the direction shown in the drawings, or in reference to the vertical, perpendicular or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms are not used to limit the present invention.

[0029] In order to solve the problem that it is time-consuming and laborious to replace the inch level of the mechanical forming drum in the prior art, the present invention provides a tire production method and device.

[0030] As Figure 1 shown, a tire production method, as Figure 2 and Figure 3 shown, the tire production device includes a main shaft 10 and an inverse wrapping rod assembly 20, a backing plate assembly 30, a lock block assembly 40 and a middle drum assembly 50 sleeved outside the main shaft 10. The tire production method includes: adjusting the initial diameter sizes of the backing plate assembly 30, the lock block assembly 40 and the middle drum assembly 50, and performing pasting; installing the tire steel ring outside the lock block assembly 40, adjusting the diameter of the lock block assembly 40 to increase, and making the lock block assembly 40 abut and lock the tire steel ring; adjusting the diameters of the backing plate assembly 30 and the middle drum assembly 50 so that the outer surfaces of the backing plate assembly 30, the lock block assembly 40 and the middle drum assembly 50 are flush and form a flat and unified surface; the inverse wrapping rod assembly 20 flips to attach the rubber material to the side of the tire, and after the attachment is completed, the inverse wrapping rod assembly 20 moves in the reverse direction and resets; adjusting the diameters of the backing plate assembly 30, the lock block assembly 40 and the middle drum assembly 50 to decrease, and removing the tire from the main shaft 10.

[0031] In this embodiment, the expansion and contraction in the radial direction can be achieved through the combined action of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50. As a result, a cylindrical outer surface can be formed at each radial position of the three components, which is used to conform to the semi-component materials of the tire. During use, the initial diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 are adjusted according to the size of the tire to be processed, so that the cylindrical outer surface formed by the three components can meet the processing requirements such as material pasting. Then, operations such as installing the steel rim and pasting the material can be carried out. By adjusting and expanding the diameter formed by the three components, the steel rim can be fixed and a flat circular surface can be formed. Then, the tire can be processed and formed by means of the reverse wrapping rod assembly 20 and inflation. After processing, the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 are reduced to remove the tire. Since the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 can all be adjusted, only the diameters of the three components need to be adjusted accordingly when processing tires of different sizes. Through the above setting method, the tire production device can process tires of multiple sizes without the need to replace the side drum, and only the diameter needs to be adjusted, thus simply and quickly realizing the processing of tires of multiple sizes, saving time and effort, improving the processing efficiency, and avoiding various losses caused by replacing the side drum. At the same time, a single device can process tires of two sizes, reducing the manufacturing cost.

[0032] This embodiment is described by taking the processing of tires of two sizes as an example. The two sizes are divided into a smaller first preset size and a second preset size. When adjusting the initial diameter, if the size of the tire to be processed is the first preset size, the backing plate assembly 30 is contracted, and the locking block assembly 40 and the middle drum assembly 50 are adjusted to the minimum diameter. During subsequent diameter expansion, natural limitation can be achieved through the steel rim and the like. If the size of the tire to be processed is the second preset size, which is larger than the first preset size, the backing plate assembly 30 is expanded during adjustment, and the locking block assembly 40 and the middle drum assembly 50 are adjusted to the intermediate diameter, and then adjusted to the maximum diameter during subsequent expansion. Of course, in addition to processing tires of two sizes, more adjustable diameters can be added to process tires of more sizes.

[0033] In this embodiment, before the turning action of the reverse wrapping rod assembly 20, the advancing and retracting driving member 33 of the backing plate assembly 30 drives the backing plate 32 of the backing plate assembly 30 to move axially, and the backing plate 32 is made to avoid the roller 21 of the reverse wrapping rod assembly 20. Then, the reverse wrapping rod assembly 20 performs a turning action, and the roller 21 of the reverse wrapping rod assembly 20 presses the rubber compound to bond the rubber compound to the side of the tire. The backing plate 32 has movements in two directions, namely radial and axial. Among them, the radial movement is to adjust the diameter size to fit tires of different sizes, while the axial movement is to block or avoid the roller 21 of the reverse wrapping rod assembly 20. Specifically, when the reverse wrapping rod assembly 20 is not operating, the backing plate assembly 30 blocks the roller 21 of the reverse wrapping rod assembly 20, so that a flat arc surface is formed on the outer surface of the device, avoiding unevenness that may affect operations such as material pasting. When the reverse wrapping rod assembly 20 needs to operate, the backing plate 32 can avoid the roller 21 under the drive of the advancing and retracting driving member 33, so that the reverse wrapping rod assembly 20 can process the tire normally.

[0034] In this embodiment, when adjusting the diameter of the backing plate assembly 30, the first inclined surface of the expansion driving member 31 of the backing plate assembly 30 and the second inclined surface of the backing plate 32 of the backing plate assembly 30 are in contact and extrusion. Through the interaction between the two, the diameter of the backing plate 32 can be contracted or expanded to the required size.

[0035] In this embodiment, the structures of the lock block assembly 40 and the middle drum assembly 50 are substantially the same, and the methods for adjusting their diameters are also the same. Depending on the structures adopted by the lock block assembly 40 and the middle drum assembly 50, the specific adjustment methods can be as follows:

[0036] Method 1

[0037] The lock block assembly 40 and the middle drum assembly 50 include a driving component 41, a transmission component 42, and a variable diameter member 43. Among them, the driving component 41 includes a cylinder and a piston. The cylinder has a plurality of air chambers, and the piston cooperates with the air chambers. By applying pressure to different air chambers of the cylinder of the driving component 41 of the lock block assembly 40 or the middle drum assembly 50, since the sizes of the air chambers are different, the distances by which the air chambers drive the piston of the driving component 41 to move are also different. As a result, the piston moves at the contraction position, the middle position, and the expansion position, and the movement distance of the piston directly affects the diameter size of the variable diameter member 43, so that the transmission component 42 of the lock block assembly 40 or the middle drum assembly 50 drives the variable diameter member 43 of the lock block assembly 40 or the middle drum assembly 50 to change to the minimum diameter, the middle diameter, or the maximum diameter.

[0038] Method 2

[0039] The lock block assembly 40 and the middle drum assembly 50 still include the above components. The difference is that the cylinder does not have air chambers of different sizes, but is also provided with an elastic member 413. The elastic member 413 abuts against the piston. When the elastic member 413 is in the natural state, the piston is located at the middle position under the action of the elastic member 413. By applying pressure into the cylinder of the driving assembly 41, the piston compresses or stretches the elastic member 413 and moves to the contracted position or the expanded position. When the piston is required to be at the middle position, no pressure is applied into the cylinder, and the piston can move to the middle position under the action of the elastic member 413 of the driving assembly 41. In this way, the transmission assembly 42 can drive the variable diameter member 43 to change to the minimum diameter, the maximum diameter or the middle diameter.

[0040] Method 3

[0041] The driving assembly 41 of the lock block assembly 40 and the middle drum assembly 50 includes a motor and a lead screw that are drivingly connected, and a nut. The motor of the driving assembly 41 drives the lead screw of the driving assembly 41 to rotate, and the lead screw drives the nut of the driving assembly 41 to move axially, so that the nut moves among the contracted position, the middle position and the expanded position. The nut can drive the variable diameter member 43 to change to the minimum diameter, the middle diameter or the maximum diameter through the transmission assembly 42.

[0042] The above three methods all control the diameter of the variable diameter member 43 by controlling the axial movement distance of the output end of the driving assembly 41. Of course, in addition to the above three methods, other methods can also be used to adjust the diameter of the variable diameter member 43. Moreover, when adjusting the diameters of the backing plate assembly 30, the lock block assembly 40 and the middle drum assembly 50, a stepped adjustment method can be adopted, for example, setting multiple middle positions, middle diameters, etc. of different grades; or a stepless adjustment method can also be adopted, for example, any diameter between the maximum diameter and the minimum diameter can be used as the middle diameter, and the diameters of the backing plate assembly 30, the lock block assembly 40 and the middle drum assembly 50 are adjusted to the required size by a stepless adjustment method, etc.

[0043] This embodiment also provides a tire production device, such as Figure 2 and Figure 3As shown, it includes a main shaft 10, a turn-up rod assembly 20, a pad assembly 30, a locking block assembly 40 and a middle drum assembly 50. The turn-up rod assembly 20 is used to process the side of the tire; the pad assembly 30 is sleeved on the main shaft 10, and the pad assembly 30 can expand and contract along the radial direction of the main shaft 10; the locking block assembly 40 is sleeved on the main shaft 10, and the locking block assembly 40 can expand and contract along the radial direction of the main shaft 10; the middle drum assembly 50 is sleeved on the main shaft 10, and the middle drum assembly 50 can expand and contract along the radial direction of the main shaft 10, the pad assembly 30, the locking block assembly 40 and the turn-up rod assembly 20 are all multiple, and on both sides of the middle drum assembly 50, the locking block assembly 40, the pad assembly 30 and the turn-up rod assembly 20 are sequentially arranged in a direction away from the middle drum assembly 50. As mentioned above, through the mutual cooperation between the above-mentioned components and the adjustment between the component formations, the tire production device can process tires of multiple sizes, and there is no need to replace the side drum, only the diameter size needs to be adjusted, thereby simply and quickly realizing the processing of tires of multiple sizes, which not only saves time and effort, but also improves the processing efficiency and avoids various losses caused by replacing the side drum.

[0044] like Figure 3 As shown, the pad assembly 30 includes an expansion drive member 31 and a pad block 32. The expansion drive member 31 is arranged along the axial direction of the main shaft 10. The pad block 32 abuts against the output end of the expansion drive member 31. The pad block 32 can expand and contract along the radial direction of the main shaft 10 under the drive of the expansion drive member 31. Specifically, the output end of the expansion drive member 31 has a first inclined surface, and the inner side of the pad block 32 has a second inclined surface, and the first inclined surface abuts and squeezes the second inclined surface. In this way, when the expansion drive member 31 is actuated, the first inclined surface can squeeze the second inclined surface, so that the axial movement of the expansion drive member 31 is converted into radial movement, thereby driving the pad block 32 to expand and contract.

[0045] In this embodiment, the turn-up rod assembly 20 has a roller 21 at one end close to the middle drum assembly 50, and the pad assembly 30 also includes an advance and retreat drive member 33, which is arranged along the radial direction of the main shaft 10 and is directly or indirectly driven and connected to the pad block 32. In addition to the function of changing the diameter, the pad block 32 also has the function of blocking the roller 21. Specifically, when the turn-up rod assembly 20 is not in motion, the pad block 32 blocks the roller 21 under the action of the advance and retreat drive member 33, so that the outer surface of the device forms a smooth arc surface. When the turn-up rod assembly 20 needs to move, the advance and retreat drive member 33 drives the pad block 32 to withdraw from the roller 21, so that the turn-up rod assembly 20 can normally process the side of the tire.

[0046] In this embodiment, the structures of the lock block assembly 40 and the middle drum assembly 50 are substantially the same, and both include a driving assembly 41, a transmission assembly 42, and a diameter-changing member 43. The transmission assembly 42 is drivingly connected to the driving assembly 41. The driving assembly 41 is arranged along the axial direction of the main shaft 10, that is, the axial direction of the driving assembly 41 is perpendicular to the expansion direction of the diameter-changing member 43. The diameter-changing member 43 is connected to the transmission assembly 42. The diameter-changing member 43 forms an arc surface as the outermost side of the whole device, so as to be used for fitting the rubber material. The diameter-changing member 43 can expand and contract radially along the main shaft 10 under the drive of the transmission assembly 42 to switch between the minimum diameter and the maximum diameter.

[0047] Generally speaking, the diameter-changing member 43 of the lock block assembly 40 is a lock block slider, which is used to cooperate with the steel ring to lock the steel ring, while the diameter-changing member 43 of the middle drum assembly 50 is a middle drum plate, and the middle drum plate is located at the middle of the axial direction of the main shaft 10 and is used to cooperate with the rubber material.

[0048] Preferably, the diameter-changing member 43 of the middle drum assembly 50 and the cushion block 32 of the cushion plate assembly 30 in this embodiment both adopt a toothed block structure.

[0049] For the lock block assembly 40 and the middle drum assembly 50, one of the differences between the two lies in the specific structure of the transmission assembly 42. The transmission assembly 42 of the lock block assembly 40 is a bent connecting rod. One end of the connecting rod is rotatably connected to the output end of the driving assembly 41, and the other end is rotatably connected to the diameter-changing member 43. By pushing the connecting rod by the driving assembly 41, the connecting rod can be rotated to drive the diameter-changing member 43 to move radially, so as to realize the conversion of the movement direction; the transmission assembly 42 of the middle drum assembly 50 includes a middle drum slider in addition to the connecting rod. One end of the connecting rod away from the driving assembly 41 is connected to the middle drum slider, and the middle drum slider is connected to the diameter-changing member 43, so as to drive the diameter-changing member 43 to move radially. Of course, in addition to the above methods, other components can also be added to the transmission assembly 42 as needed. It should be noted that although the structures of the transmission assemblies 42 of the lock block assembly 40 and the middle drum assembly 50 are different, their functions are the same, both of which play the roles of transmission and steering.

[0050] As mentioned above, in terms of structure, the driving assembly 41 includes a driving member 411 and an output member 412. The output member 412 moves along the axial direction of the driving member 411, so that the movement direction of the output member 412 is perpendicular to the expansion direction of the diameter-changing member 43. There are the following three structural forms of the specific structure:

[0051] Method 1

[0052] The driving member 411 is a cylinder, and the output member 412 is a piston. The piston is movably arranged in the cylinder and is connected to the transmission assembly 42. The cylinder can form a plurality of air chambers with different sizes. When pressure is applied to the air chambers with different sizes, the piston moves different distances. When the piston moves to one end of the cylinder, it is in the contracted position; when it moves to the other end, it is in the expanded position; when it moves to the middle between the two ends of the cylinder, it is in the middle position. At these three positions, the diameter-changing member 43 forms the minimum diameter, the maximum diameter, and the intermediate diameter between the minimum diameter and the maximum diameter respectively. In this way, by applying pressure to different air chambers, the piston can be made to move different distances, so that the diameter-changing member 43 forms different diameters.

[0053] Method 2

[0054] The driving member 411 is a cylinder, and the output member 412 is a piston. The driving assembly 41 further includes an elastic member 413. The piston is movably arranged in the cylinder. The difference between this method and Method 1 is that in this method, air chambers with different sizes are not provided, but the movement of the piston is controlled by the elastic member 413. The elastic member 413 abuts against the piston and is connected to the transmission assembly 42. The piston has a contracted position and an expanded position where it moves to the end of the cylinder, and an intermediate position between the contracted position and the expanded position. And when the elastic member 413 is in the natural state, the piston is in the intermediate position. In this way, when it is necessary for the diameter-changing member 43 to form the minimum diameter or the maximum diameter, pressure can be applied to both sides of the piston in the cylinder or positive and negative pressures can be applied to one side of the piston respectively to achieve this. And when it is necessary for the diameter-changing member 43 to form the intermediate diameter, no pressure is applied to the cylinder, and the piston can move under the action of the elastic member 413 and stay in the intermediate position, that is, when the piston is in the contracted position, the intermediate position, and the expanded position, the diameter-changing member 43 forms the minimum diameter, the intermediate diameter, and the maximum diameter with diameters increasing in sequence, so as to realize the change in the diameter of the diameter-changing member 43. The structure shown in the drawings of this embodiment adopts this method. The elastic member 413 can be an elastic component such as a spring selected according to needs.

[0055] Method 3

[0056] The driving member 411 is a motor, and the output members 412 are a lead screw and a nut. This method adopts the driving mode of a motor. Since the motor drive can precisely control the stroke, the lead screw is directly connected to the motor drive and rotates under the drive of the motor. The nut is in threaded engagement with the lead screw and is connected to the transmission assembly 42. In this way, when it is necessary to change the diameter of the diameter-changing member 43, the motor drives the lead screw to rotate, and the lead screw drives the nut to axially move between the contracted position, the intermediate position, and the expanded position, so that the diameter-changing member 43 forms the minimum diameter, the intermediate diameter, and the maximum diameter with diameters increasing in sequence.

[0057] Through the above methods, the driving assembly 41 can drive the diameter-changing member 43 to move to the required position.

[0058] One or more of the above-mentioned intermediate positions and intermediate diameters can be set as required, and the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 are adjusted between the minimum diameter, the maximum diameter, and each intermediate diameter by means of step adjustment or stepless adjustment.

[0059] It should be noted that the "multiple" in the above-mentioned embodiments refers to at least two.

[0060] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

[0061] 1. Solved the problem that it is time-consuming and laborious to replace the size level of the mechanical forming drum in the prior art;

[0062] 2. The tire production device can process tires of multiple size levels, and does not need to replace the side drum, and simply and quickly realizes the processing of tires of multiple size levels;

[0063] 3. It saves time and effort, improves the processing efficiency, and avoids various losses caused by replacing the side drum;

[0064] 4. One device can process tires of two size levels, reducing the manufacturing cost.

[0065] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0066] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tire production method, characterized in that, The tire production device includes a main shaft (10), and an inverse wrapping rod assembly (20), a backing plate assembly (30), a locking block assembly (40), and a medium drum assembly (50) sleeved outside the main shaft (10). The tire production method includes: Adjust the initial diameters of the backing plate assembly (30), the locking block assembly (40), and the medium drum assembly (50), and apply materials. Install the tire steel ring outside the locking block assembly (40), adjust the diameter of the locking block assembly (40) to increase, and make the locking block assembly (40) abut and lock the tire steel ring. Adjust the diameters of the backing plate assembly (30) and the medium drum assembly (50) so that the outer surfaces of the backing plate assembly (30), the locking block assembly (40), and the medium drum assembly (50) are flush and form a flat and unified surface. The inverse wrapping rod assembly (20) flips to attach the rubber material to the side of the tire. After the attachment is completed, the inverse wrapping rod assembly (20) moves in the reverse direction and resets. Adjust the diameters of the backing plate assembly (30), the locking block assembly (40), and the medium drum assembly (50) to decrease, and remove the tire from the main shaft (10). When adjusting the initial diameters, if the size of the tire to be processed is the first preset size, then shrink the backing plate assembly (30), and adjust the locking block assembly (40) and the medium drum assembly (50) to the minimum diameter. If the size of the tire to be processed is the second preset size greater than the first preset size, then expand the backing plate assembly (30), and adjust the locking block assembly (40) and the medium drum assembly (50) to the intermediate diameter, and there is at least one intermediate diameter.

2. The tire production method according to claim 1, characterized in that, Before the flipping action of the inverse wrapping rod assembly (20), the advancing and retreating driving member (33) of the backing plate assembly (30) drives the backing plate block (32) of the backing plate assembly (30) to move axially, and makes the backing plate block (32) avoid the roller (21) of the inverse wrapping rod assembly (20). Then the inverse wrapping rod assembly (20) flips, and the roller (21) of the inverse wrapping rod assembly (20) squeezes the rubber material to attach the rubber material to the side of the tire.

3. The tire production method according to claim 1, characterized in that, When adjusting the diameter of the backing plate assembly (30), the first inclined surface of the expansion driving member (31) of the backing plate assembly (30) interacts with the second inclined surface of the backing plate block (32) of the backing plate assembly (30), and makes the diameter of the backing plate block (32) change to the required size.

4. The tire production method according to claim 1, characterized in that, When adjusting the diameter of the locking block assembly (40) and / or the medium drum assembly (50), By applying pressure to different air chambers of the cylinder of the driving assembly (41) of the locking block assembly (40) or the medium drum assembly (50), drive the piston of the driving assembly (41) to move different distances, so that the transmission assembly (42) of the locking block assembly (40) or the medium drum assembly (50) drives the diameter-changing member (43) of the locking block assembly (40) or the medium drum assembly (50) to change to the minimum diameter, the intermediate diameter, or the maximum diameter; or By applying pressure into the cylinder of the driving component (41), the piston is driven to move to the contracted position or the expanded position, or without applying pressure into the cylinder, the piston moves to the intermediate position under the action of the elastic member (413) of the driving component (41), so that the transmission component (42) drives the variable diameter member (43) to change to the minimum diameter, the maximum diameter or the intermediate diameter; or The screw rod of the driving component (41) is driven to rotate by the motor of the driving component (41), and the screw rod drives the nut of the driving component (41) to move axially, so that the variable diameter member (43) changes to the minimum diameter, the intermediate diameter or the maximum diameter.

5. The tire production method according to claim 1, characterized in that, When adjusting the diameters of the backing plate assembly (30), the lock block assembly (40) and the middle drum assembly (50), a stepped adjustment or a stepless adjustment method is adopted for adjustment.

6. A tire production device, characterized in that, Comprising: A main shaft (10); A reverse wrapping rod assembly (20) for processing the side of a tire; A backing plate assembly (30) sleeved on the main shaft (10), and the backing plate assembly (30) can expand and contract radially along the main shaft (10); A lock block assembly (40) sleeved on the main shaft (10), and the lock block assembly (40) can expand and contract radially along the main shaft (10); A middle drum assembly (50) sleeved on the main shaft (10), the middle drum assembly (50) can expand and contract radially along the main shaft (10), and the backing plate assembly (30), the lock block assembly (40) and the middle drum assembly (50) can achieve radial expansion and contraction, so that cylindrical outer surfaces can be formed at all radial positions of the three to fit and form the semi-component materials of the tire. The backing plate assembly (30), the lock block assembly (40) and the reverse wrapping rod assembly (20) are all multiple, and the lock block assembly (40), the backing plate assembly (30) and the reverse wrapping rod assembly (20) are sequentially arranged on both sides of the middle drum assembly (50) along the direction away from the middle drum assembly (50).

7. The tire production device according to claim 6, characterized in that, The backing plate assembly (30) includes: An expansion driving member (31) arranged axially along the main shaft (10); A backing plate block (32) in contact with the output end of the expansion driving member (31), and the backing plate block (32) can expand and contract radially along the main shaft (10) under the drive of the expansion driving member (31).

8. The tire production device according to claim 7, characterized in that, The output end of the expansion driving member (31) has a first inclined surface, and the inner side of the backing plate block (32) has a second inclined surface, and the first inclined surface is in contact and extrusion fit with the second inclined surface. The expansion driving member (31) drives the backing plate block (32) to expand and contract by extruding the second inclined surface through the first inclined surface.

9. The tire production device according to claim 7, wherein One end of the reverse wrapping rod assembly (20) close to the middle drum assembly (50) is provided with a roller (21). The backing plate assembly (30) further includes an advancing and retracting driving member (33). The advancing and retracting driving member (33) is drivingly connected to the backing plate block (32) and can drive the backing plate block (32) to move axially along the main shaft (10) to block or avoid the roller (21).

10. The tire production device according to claim 6, characterized in that, The lock block assembly (40) and / or the middle drum assembly (50) includes: a driving assembly (41); a transmission assembly (42), the transmission assembly (42) is drivingly connected to the driving assembly (41); a diameter-changing member (43), the diameter-changing member (43) is connected to the transmission assembly (42) and can expand and contract radially along the main shaft (10) driven by the transmission assembly (42) to switch between a minimum diameter and a maximum diameter.

11. The tire production device according to claim 10, characterized in that, The driving assembly (41) is arranged axially along the main shaft (10). The transmission assembly (42) is bent. One end of the transmission assembly (42) is connected to the output end of the driving assembly (41), and the other end of the transmission assembly (42) is connected to the diameter-changing member (43).

12. The tire production device according to claim 10, characterized in that, The driving assembly (41) includes: a cylinder; a piston, the piston is movably arranged in the cylinder and is connected to the transmission assembly (42). The cylinder can form a plurality of air cavities with different sizes. When pressurized air is introduced into the air cavities with different sizes, the piston moves different distances, and the piston moves between a contraction position and an expansion position at the end of the cylinder and an intermediate position between the contraction position and the expansion position, so that the diameter-changing member (43) forms the minimum diameter, the maximum diameter, and at least one intermediate diameter between the minimum diameter and the maximum diameter respectively.

13. The tire production device according to claim 10, characterized in that, The driving assembly (41) includes: a cylinder; a piston, the piston is movably arranged in the cylinder; an elastic member (413), the elastic member (413) abuts against the piston and is connected to the transmission assembly (42). The piston has a contraction position and an expansion position at the end of the cylinder and an intermediate position between the contraction position and the expansion position. When the elastic member (413) is in a natural state, the piston is located at the intermediate position. When the piston is located at the contraction position, the intermediate position, and the expansion position, the diameter-changing member (43) forms the minimum diameter, at least one intermediate diameter, and the maximum diameter with diameters increasing in sequence respectively.

14. The tire production device according to claim 10, characterized in that, The driving assembly (41) includes: a motor; a lead screw, the lead screw is drivingly connected to the motor and rotates driven by the motor; a nut, the nut is in threaded cooperation with the lead screw and is connected to the transmission assembly (42). The lead screw drives the nut to move axially between a contraction position, an intermediate position, and an expansion position, so that the diameter-changing member (43) forms the minimum diameter, at least one intermediate diameter, and the maximum diameter with diameters increasing in sequence respectively.

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