Tire manufacturing methods and equipment

Abstract

The invention relates to a method and apparatus for the manufacture of tires. The tire manufacture apparatus comprises a main shaft and a lift bar assembly, a wedge assembly, a locking block assembly, and a center drum assembly enclosed outside the main shaft. The tire manufacture method comprises the following steps: adjusting the initial diameters of the wedge assembly, the locking block assembly, and the center drum assembly, and adhering the sizing material; installing the tire rim outside the locking block assembly, increasing the diameter of the locking block assembly, and creating a locking block assembly that engages and locks the tire rim; adjusting the diameters of the wedge assembly and the center drum assembly so that the outer surfaces of the wedge assembly, the locking block assembly, and the center drum assembly are flat; rotating the lift bar assembly to adhering the sizing material to the side surface of the tire, and creating a lift bar assembly that moves in reverse and re-sets after the adhering is complete; reducing the diameters of the wedge assembly, the locking block assembly, and the center drum assembly and removing the tire from the main shaft.This invention solves the problem of the known technical solution of replacing tire drums with different tire sizes, which is time-consuming and labor-intensive.

Description

Tire production method and apparatus

[0001] This application claims priority to the patent application submitted to the State Intellectual Property Office of China on December 31, 2020, with application number 202011636146.7 and invention name "Tire Production Method and Device". Technical Field

[0002] The present application relates to the technical field of tire processing, and in particular to a tire production method and device. Background Art

[0003] Currently, tire building drums are divided into capsule drums and mechanical drums. The main difference between these two drums is the way they are turned up. Capsule drums use a turn-up capsule for inflation, while mechanical drums use a turn-up rod. Mechanical drums offer far greater tire building efficiency than capsule drums, which is why they hold a significant market share on semi-steel building machines. However, mechanical drums are complex, and changing tire sizes necessitates replacing the side drum. Most general-sized tire plants produce to order, requiring frequent side drum replacements. Each replacement typically takes approximately 20-30 minutes, representing a significant cost to the tire plant.

[0004] Summary of the Invention

[0005] The main purpose of the present application is to provide a tire production method and device to solve the problem of time-consuming and labor-intensive inch-level replacement of mechanical building drums in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to an optional embodiment of the present application, a tire production method is provided, the tire production device includes a main shaft and a turn-up rod assembly, a pad assembly, a locking block assembly and a middle drum assembly which are sleeved outside the main shaft, the tire production method includes: adjusting the initial diameter of the pad assembly, the locking block assembly and the middle drum assembly, and performing material pasting; installing the tire rim outside the locking block assembly, adjusting the diameter of the locking block assembly to increase, and making the locking block assembly press against the tire rim to lock it; adjusting the diameter of the pad assembly and the middle drum assembly so that the outer surfaces of the pad assembly, the locking block assembly and the middle drum assembly are flush and form a flat and uniform surface; the turn-up rod assembly flips to adhere the rubber to the side of the tire, and after the pasting is completed, the turn-up rod assembly reverses and resets; adjusting the diameter of the pad assembly, the locking block assembly and the middle drum assembly to reduce, and removing the tire from the main shaft.

[0007] In an optional embodiment, when adjusting the initial diameter, if the size of the tire to be processed is a first preset size, the pad 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 larger than the first preset size, the pad assembly is expanded, and the locking block assembly and the middle drum assembly are adjusted to an intermediate diameter, and the intermediate diameter is at least one.

[0008] In an optional embodiment, before the turn-up rod assembly flips, the forward and backward driving member of the pad assembly drives the pad block of the pad assembly to move axially, and makes the pad block avoid the roller of the turn-up rod assembly, and then the turn-up rod assembly flips, and the roller of the turn-up rod assembly squeezes the rubber material to adhere the rubber material to the side of the tire.

[0009] In an optional embodiment, when adjusting the diameter of the pad assembly, the first inclined surface of the expansion driver of the pad assembly interacts with the second inclined surface of the pad block of the pad assembly to change the diameter of the pad block to a desired size.

[0010] In an optional embodiment, when adjusting the diameter of at least one of the locking block assembly and the middle drum assembly, pressure is applied to different air chambers of the cylinder of the driving assembly of the locking block assembly or the middle drum assembly to drive the piston of the driving assembly to move different distances, so that the transmission assembly of the locking block assembly or the middle drum assembly drives the reducing part of the locking block assembly or the middle drum assembly to change to the minimum diameter, the middle diameter or the maximum diameter; or pressure is applied to the cylinder of the driving assembly to drive the piston to move to a contracted position or an expanded position, or no pressure is applied to the cylinder, and the piston moves to the middle position under the action of the elastic part of the driving assembly, so that the transmission assembly drives the reducing part to change to the minimum diameter, the maximum diameter or the middle diameter; or the motor of the driving assembly drives the screw of the driving assembly to rotate, and the screw drives the nut of the driving assembly to move axially, so that the reducing part changes to the minimum diameter, the middle diameter or the maximum diameter.

[0011] In an optional embodiment, when adjusting the diameters of the backing plate assembly, the locking block assembly and the middle drum assembly, step-by-step adjustment or stepless adjustment is adopted for adjustment.

[0012] According to an optional embodiment of the present application, a tire production device is provided, including: a main shaft; a turn-up rod assembly, the turn-up rod assembly is used to process the side of the tire; a pad assembly, the pad assembly is sleeved on the main shaft, and the pad assembly can expand and contract along the radial direction of the main shaft; a locking block assembly, the locking block assembly is 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, the middle drum assembly is sleeved on the main shaft, and the middle drum assembly can expand and contract along the radial direction of the main shaft, and there are multiple pad assemblies, locking block assemblies and turn-up rod assemblies, and on both sides of the middle drum assembly, the locking block assemblies, pad assemblies and turn-up rod assemblies are sequentially arranged in a direction away from the middle drum assembly.

[0013] In an optional embodiment, the pad assembly includes: an expansion drive member, which is arranged axially along the main shaft; a pad block, which abuts the output end of the expansion drive member and can expand and contract radially along the main shaft under the drive of the expansion drive member.

[0014] In an optional embodiment, the output end of the expansion drive has a first inclined surface, the inner side of the pad plate has a second inclined surface, and the first inclined surface and the second inclined surface are abutted and extruded together. The expansion drive drives the pad plate to expand and contract by squeezing the second inclined surface through the first inclined surface.

[0015] In an optional embodiment, the turn-up rod assembly has a roller at one end close to the middle drum assembly, and the pad assembly also includes an advance and retreat drive component, which is drive-connected to the pad block and can drive the pad block to move axially along the main shaft to block or avoid the roller.

[0016] In an optional embodiment, at least one of the locking block assembly and the middle drum assembly includes: a drive assembly; a transmission assembly, which is drive-connected to the drive assembly; a reducing member, which is connected to the transmission assembly and can expand and contract radially along the main shaft under the drive of the transmission assembly to switch between the minimum diameter and the maximum diameter.

[0017] In an optional embodiment, the drive 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 drive assembly, and the other end of the transmission assembly is connected to the diameter reducing member.

[0018] In an optional embodiment, the drive assembly includes: a cylinder; a piston, the piston is movably arranged in the cylinder and connected to the transmission assembly, the cylinder can form multiple air cavities of different sizes, when pressure is passed into the air cavities of 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 reducing member forms a minimum diameter, a maximum diameter, and at least one intermediate diameter between the minimum diameter and the maximum diameter, respectively.

[0019] In an optional embodiment, the drive assembly includes: a cylinder; a piston, which is movably arranged in the cylinder; an elastic member, which abuts the piston and is connected to the transmission assembly, and the piston has a contracted position and an expanded position that move to the end of the cylinder, as well as 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 in the intermediate position, and when the piston is in the contracted position, the intermediate position and the expanded position, the diameter-changing member respectively forms a minimum diameter, at least one intermediate diameter and a maximum diameter with increasing diameters.

[0020] In an optional embodiment, the drive assembly includes: a motor; a screw, which is connected to the motor drive and rotates under the drive of the motor; a nut, which is threaded with the screw and connected to the transmission assembly, and the screw drives the nut to move axially between a contracted position, an intermediate position and an expanded position, so that the diameter-changing part forms a minimum diameter, at least one intermediate diameter and a maximum diameter with increasing diameters.

[0021] By applying the technical solution of the present application, the backing plate assembly, the locking block assembly, and the middle drum assembly can achieve radial expansion and contraction, so that the three can form a cylindrical outer surface at each radial position to fit the various half-component materials that make up 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 can meet the processing requirements such as material attachment. Then, the steel rim can be installed, the material can be attached, etc., and the steel rim can be fixed and a flat circular surface can be formed by adjusting and expanding the diameter formed by the three. The tire can then be processed and formed by using the turn-up rod assembly and inflation. After processing is completed, the diameters of the backing plate assembly, the locking block assembly, and the middle drum assembly can be 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, it is only necessary to adjust the diameters of the three when processing tires of different sizes. The above-described configuration method enables the tire production device to process tires of multiple sizes without having to replace the side drums, requiring only adjustment of the diameter. This allows for simple and quick processing of tires of multiple sizes, saving time and effort while improving processing efficiency and avoiding the various losses associated with replacing side drums. Furthermore, a single device can process tires of two sizes, reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0023] FIG1 shows a flow chart of the tire production method of the present application;

[0024] FIG2 shows a schematic structural diagram of a tire production device of the present application;

[0025] FIG. 3 shows an enlarged view of point P in FIG. 2 .

[0026] The above drawings include the following reference numerals:

[0027] 10. Main shaft; 20. Turn-up rod assembly; 21. Roller; 30. Pad assembly; 31. Expansion drive member; 32. Pad block; 33. Advance and retreat drive member; 40. Lock block assembly; 41. Drive assembly; 411. Drive member; 412. Output member; 413. Elastic member; 42. Transmission assembly; 43. Reducer; 50. Middle drum assembly. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to solve the problem in the prior art that it is time-consuming and labor-intensive to change the size of a mechanical building drum, the present application provides a tire production method and device.

[0030] A tire production method as shown in Figure 1, and a tire production device as shown in Figures 2 and 3 include a main shaft 10 and a turn-up rod assembly 20, a pad assembly 30, a locking block assembly 40 and a middle drum assembly 50 sleeved outside the main shaft 10. The tire production method includes: adjusting the initial diameters of the pad assembly 30, the locking block assembly 40 and the middle drum assembly 50, and performing material pasting; installing the tire rim outside the locking block assembly 40, adjusting the diameter of the locking block assembly 40 to increase, and making the locking block assembly 40 press against the tire rim to lock it; adjusting the diameters of the pad assembly 30 and the middle drum assembly 50 so that the outer surfaces of the pad assembly 30, the locking block assembly 40 and the middle drum assembly 50 are flush and form a flat and uniform surface; the turn-up rod assembly 20 flips to adhere the rubber to the side of the tire, and after the pasting is completed, the turn-up rod assembly 20 reverses and resets; adjusting the diameters of the pad assembly 30, the locking block assembly 40 and the middle drum assembly 50 to reduce, and removing the tire from the main shaft 10.

[0031] In this embodiment, the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 can expand and contract radially, thereby forming a cylindrical outer surface at each radial position to fit the various half-component materials that make up 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 meets the processing requirements such as material attachment. The rim can then be installed and the material attached. By adjusting and expanding the diameter formed by the three components, the rim can be fixed and a flat circular surface can be formed. The tire can then be processed and formed by using the turn-up rod assembly 20 and inflation. After processing is completed, the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 can be 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 are all adjustable, only the diameters of the three components need to be adjusted accordingly when processing tires of different sizes. The above-described configuration method enables the tire production device to process tires of multiple sizes without having to replace the side drums, requiring only adjustment of the diameter. This allows for simple and quick processing of tires of multiple sizes, saving time and effort while improving processing efficiency and avoiding the various losses associated with replacing side drums. Furthermore, a single device can process tires of two sizes, reducing manufacturing costs.

[0032] This embodiment uses the processing of two-size tires as an example. The two size levels 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. Subsequent diameter expansion can be naturally limited by the steel ring, etc.; 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. Subsequent expansion can be adjusted to the maximum diameter. Of course, in addition to processing tires of two size levels, more adjustable diameters can also be added to process tires of more size levels.

[0033] In this embodiment, before the turn-up rod assembly 20 flips over, the forward and backward driving member 33 of the pad assembly 30 drives the pad block 32 of the pad assembly 30 to move axially, and makes the pad block 32 avoid the roller 21 of the turn-up rod assembly 20. Then the turn-up rod assembly 20 flips over, and the roller 21 of the turn-up rod assembly 20 squeezes the rubber material to stick the rubber material to the side of the tire. The pad block 32 has movements in both radial and axial directions. The radial movement is to adjust the diameter to adapt to tires of different sizes, while the axial movement is to block or avoid the roller 21 of the turn-up rod assembly 20. Specifically, when the turn-up rod assembly 20 is not moving, the pad assembly 30 blocks the roller 21 of the turn-up rod assembly 20, so that the outer surface of the device forms a flat arc surface, avoiding unevenness that affects operations such as material pasting. When the turn-up rod assembly 20 needs to move, the pad block 32 can avoid the roller 21 under the drive of the advance and retreat drive member 33, so that the turn-up rod assembly 20 can process the tire normally.

[0034] In this embodiment, when adjusting the diameter of the pad assembly 30, the first inclined surface of the expansion driving member 31 of the pad assembly 30 and the second inclined surface of the pad block 32 of the pad assembly 30 are pressed together, and through the interaction between the two, the diameter of the pad block 32 can shrink or expand to the required size.

[0035] In this embodiment, the structures of the locking block assembly 40 and the middle drum assembly 50 are substantially the same, and the diameter adjustment methods of the two are also the same. Depending on the different structures adopted by the locking block assembly 40 and the middle drum assembly 50, the specific adjustment methods can be adopted in the following ways, specifically:

[0036] Method 1

[0037] The locking block assembly 40 and the middle drum assembly 50 include a drive assembly 41, a transmission assembly 42, and a reducer 43. The drive assembly 41 includes a cylinder and a piston, wherein the cylinder has multiple air chambers, and the piston cooperates with the air chambers. By applying pressure to different air chambers in the cylinder of the drive assembly 41 of the locking block assembly 40 or the middle drum assembly 50, the air chambers of the cylinder drive the piston of the drive assembly 41 to move different distances due to the different sizes of the air chambers, thereby causing the piston to move between a retracted position, an intermediate position, and an expanded position. The movement distance of the piston directly affects the diameter of the reducer 43, thereby causing the transmission assembly 42 of the locking block assembly 40 or the middle drum assembly 50 to drive the reducer 43 of the locking block assembly 40 or the middle drum assembly 50 to change to the minimum diameter, the intermediate diameter, or the maximum diameter.

[0038] Method 2

[0039] The locking block assembly 40 and the middle drum assembly 50 still include the aforementioned components, the difference being that the cylinder does not have air cavities of varying sizes, but is further provided with an elastic member 413 that abuts the piston. When the elastic member 413 is in its natural state, the piston is positioned at an intermediate position under the action of the elastic member 413. By applying pressure to the cylinder of the drive assembly 41, the piston is driven to compress or stretch the elastic member 413, moving it to a contracted or expanded position. When the piston is required to be in an intermediate position, no pressure is applied to the cylinder, and the piston is moved to the intermediate position under the action of the elastic member 413 of the drive assembly 41. In this way, the transmission assembly 42 can drive the reducing member 43 to change to the minimum diameter, maximum diameter, or intermediate diameter.

[0040] Method 3

[0041] The drive assembly 41 of the locking block assembly 40 and the middle drum assembly 50 includes a motor, a leadscrew, and a nut that are connected to each other. The motor of the drive assembly 41 drives the leadscrew of the drive assembly 41 to rotate, which in turn drives the nut of the drive assembly 41 to axially move, allowing the nut to move between a retracted position, an intermediate position, and an expanded position. The nut can then be driven by the reducer 43 via the transmission assembly 42 to change to a minimum diameter, an intermediate diameter, or a maximum diameter.

[0042] The three aforementioned methods all achieve control over the diameter of the reducer 43 by controlling the axial movement distance of the output end of the drive assembly 41. Of course, in addition to the three aforementioned methods, other methods can also be used to adjust the diameter of the reducer 43. Furthermore, when adjusting the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50, a step-by-step adjustment method can be employed, such as setting multiple intermediate positions and intermediate diameters of varying sizes. Alternatively, a stepless adjustment method can be employed, such as using any diameter between the maximum and minimum diameters as an intermediate diameter, and adjusting the diameters of the backing plate assembly 30, the locking block assembly 40, and the middle drum assembly 50 to the desired size through stepless adjustment.

[0043] This embodiment also provides a tire production device, as shown in Figures 2 and 3, which 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. There are multiple pad assemblies 30, locking block assemblies 40 and turn-up rod assemblies 20, and the locking block assemblies 40, pad assembly 30 and turn-up rod assembly 20 are sequentially arranged on both sides of the middle drum assembly 50 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 realizing the processing of tires of multiple sizes simply and quickly, which not only saves time and effort, but also improves processing efficiency and avoids various losses caused by replacing the side drum.

[0044] As shown in FIG3 , the backing plate assembly 30 includes an expansion driver 31 and a backing plate 32. The expansion driver 31 is disposed axially along the main shaft 10. The backing plate 32 abuts against the output end of the expansion driver 31. Driven by the expansion driver 31, the backing plate 32 can expand and contract radially along the main shaft 10. Specifically, the output end of the expansion driver 31 has a first inclined surface, and the inner side of the backing plate 32 has a second inclined surface. The first inclined surface abuts and presses against the second inclined surface. Thus, when the expansion driver 31 is actuated, the first inclined surface presses against the second inclined surface, converting the axial motion of the expansion driver 31 into radial motion, thereby driving the backing plate 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. The advance and retreat drive member 33 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, thereby forming a flat arc surface on the outer surface of the device. 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 locking block assembly 40 and the middle drum assembly 50 are roughly the same, and they both include a drive assembly 41, a transmission assembly 42 and a reducer 43. The transmission assembly 42 is driven and connected to the drive assembly 41. The drive assembly 41 is arranged along the axial direction of the main shaft 10, that is, the axial direction of the drive assembly 41 is perpendicular to the expansion direction of the reducer 43. The reducer 43 is connected to the transmission assembly 42. The reducer 43 forms an arc surface as the outermost side of the entire device, so as to be used for bonding rubber. The reducer 43 can expand and contract along the radial direction of 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 reducing member 43 of the locking block assembly 40 is a locking block slider, which is used to cooperate with the steel ring to lock the steel ring, while the reducing member 43 of the middle drum assembly 50 is a middle drum plate, which is located in the axial middle of the main shaft 10 and is used to cooperate with the rubber.

[0048] Preferably, the reducing member 43 of the middle drum assembly 50 and the backing plate 32 of the backing plate assembly 30 of this embodiment both adopt a toothed block structure.

[0049] One difference between the locking block assembly 40 and the middle drum assembly 50 lies in the specific structure of the transmission assembly 42. The transmission assembly 42 of the locking block assembly 40 is a bent connecting rod, one end of which is rotatably connected to the output end of the drive assembly 41 and the other end is rotatably connected to the reducer 43. By pushing the connecting rod by the drive assembly 41, the connecting rod rotates and drives the reducer 43 radially, thereby changing the direction of motion. The transmission assembly 42 of the middle drum assembly 50 includes not only the connecting rod but also a middle drum slider. The end of the connecting rod facing away from the drive assembly 41 is connected to the middle drum slider, which in turn is connected to the reducer 43, thereby driving the reducer 43 radially. Of course, in addition to the above-described configuration, the transmission assembly 42 can also include other components as needed. It should be noted that although the transmission assemblies 42 of the locking block assembly 40 and the middle drum assembly 50 differ in structure, their functions are the same: 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 reducing member 43. The specific structure has the following three structural forms:

[0051] Method 1

[0052] The driving member 411 is a cylinder, and the output member 412 is a piston. The piston is movably disposed within the cylinder and connected to the transmission assembly 42. The cylinder can form multiple air chambers of different sizes. When pressure is applied to the air chambers of different sizes, the piston moves different distances. When the piston moves to one end of the cylinder, it is in a contracted position; when it moves to the other end, it is in an expanded position; when it moves to the middle of the cylinder ends, it is in an intermediate position. In these three positions, the diameter reducing member 43 respectively forms a minimum diameter, a maximum diameter, and a diameter intermediate between the minimum and maximum diameters. In this way, by applying pressure to different air chambers, the piston can be moved different distances, thereby causing the diameter reducing member 43 to form different diameters.

[0053] Method 2

[0054] The driving member 411 is a cylinder, the output member 412 is a piston, and the driving assembly 41 also includes an elastic member 413, and the piston is movably arranged in the cylinder; the difference between this method and method 1 is that this method does not set air cavities of different sizes, but controls the movement of the piston through the elastic member 413. Elastic member 413 abuts the piston and is connected to transmission assembly 42. The piston has a retracted position and an expanded position, moving to the end of the cylinder, as well as an intermediate position between the retracted and expanded positions. When elastic member 413 is in its natural state, the piston is in the intermediate position. Thus, when the reducer 43 is required to form a minimum or maximum diameter, pressure is applied to both sides of the piston in the cylinder, or positive or negative pressure is applied to one side of the piston, respectively. When the reducer 43 is required to form an intermediate diameter, no pressure is applied to the cylinder, and the piston moves and remains in the intermediate position under the action of elastic member 413. That is, when the piston is in the retracted, intermediate, and expanded positions, the reducer 43 forms a minimum diameter, an intermediate diameter, and a maximum diameter, respectively, with increasing diameters, thereby achieving a change in the diameter of the reducer 43. The structure shown in the drawings of this embodiment adopts this approach. Elastic member 413 can be a spring or other elastic component as needed.

[0055] Method 3

[0056] The driving member 411 is a motor, and the output member 412 is a lead screw and a nut. This method adopts a motor-driven method. Since the motor drive can accurately control the stroke, the lead screw is directly connected to the motor drive and rotates under the drive of the motor. The nut is matched with the lead screw thread and connected to the transmission assembly 42. In this way, when the diameter of the reducing member 43 needs to be changed, the lead screw is driven by the motor to rotate, and the lead screw drives the nut to move axially between the contracted position, the intermediate position and the expanded position, so that the reducing member 43 can form a minimum diameter, an intermediate diameter and a maximum diameter with increasing diameters.

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

[0058] The above-mentioned intermediate positions and intermediate diameters can be set to one or more as needed, and the diameters of the pad assembly 30, the locking block assembly 40 and the middle drum assembly 50 can be adjusted between the minimum diameter, the maximum diameter and the intermediate diameters through stepped or stepless adjustment.

[0059] It should be noted that, in the above embodiments, a plurality refers to at least two.

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

[0061] 1. It solves the problem of time-consuming and labor-intensive replacement of mechanical forming drums in the prior art;

[0062] 2. The tire production device can process tires of multiple sizes without the need to replace the side drum, making it easy and quick to process tires of multiple sizes.

[0063] 3. Save time and labor, improve processing efficiency, and avoid various losses caused by replacing the side drum;

[0064] 4. One device can process two-inch tires, reducing manufacturing costs.

[0065] Obviously, the embodiments described above are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0066] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A tire production method, characterized in that: The tire production device comprises a main shaft (10) and a turn-up rod assembly (20), a backing plate assembly (30), a locking block assembly (40) and a middle drum assembly (50) sleeved outside the main shaft (10). The tire production method comprises: Adjusting the initial diameters of the backing plate assembly (30), the locking block assembly (40) and the middle drum assembly (50), and performing material attachment; Installing the tire steel rim outside the locking block assembly (40), adjusting the diameter of the locking block assembly (40) to increase, and making the locking block assembly (40) press against the tire steel rim to lock it; 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 locking block assembly (40) and the middle drum assembly (50) are flush and form a flat and uniform surface; The turn-up rod assembly (20) flips over to attach the rubber material to the side of the tire, and after the attachment is completed, the turn-up rod assembly (20) reverses and resets; The diameters of the backing plate assembly (30), the locking block assembly (40) and the middle drum assembly (50) are adjusted to be smaller, and the tire is removed from the main shaft (10).

2. The tire production method according to claim 1, characterized in that: When adjusting the initial diameter, if the size of the tire to be processed is a 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 a minimum diameter; if the size of the tire to be processed is a second preset size larger than the first preset size, the backing plate assembly (30) is expanded, and the locking block assembly (40) and the middle drum assembly (50) are adjusted to an intermediate diameter, and the intermediate diameter is at least one.

3. The tire production method according to claim 1, characterized in that: Before the turn-up rod assembly (20) turns over, the forward and backward driving member (33) of the pad assembly (30) drives the pad block (32) of the pad assembly (30) to move axially, and makes the pad block (32) avoid the roller (21) of the turn-up rod assembly (20), and then the turn-up rod assembly (20) turns over, and the roller (21) of the turn-up rod assembly (20) squeezes the rubber material to adhere the rubber material to the side of the tire.

4. The tire production method according to claim 1, characterized in that: When adjusting the diameter of the pad assembly (30), the first inclined surface of the expansion driving member (31) of the pad assembly (30) interacts with the second inclined surface of the pad block (32) of the pad assembly (30), and the diameter of the pad block (32) is changed to a required size.

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

6. The tire production method according to claim 1, characterized in that: When adjusting the diameters of the backing plate assembly (30), the locking block assembly (40) and the middle drum assembly (50), the adjustment is performed in a step-by-step or stepless manner.

7. A tire production device, characterized in that: include: spindle (10); A turn-up rod assembly (20), wherein the turn-up rod assembly (20) is used for processing the side of a tire; a shim assembly (30), wherein the shim assembly (30) is sleeved on the main shaft (10), and the shim assembly (30) can expand and contract along the radial direction of the main shaft (10); A locking block assembly (40), wherein 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); A 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 backing plate assembly (30), the locking block assembly (40) and the turn-up rod assembly (20) are all multiple, and the locking block assembly (40), the backing plate assembly (30) and the turn-up rod assembly (20) are sequentially arranged on both sides of the middle drum assembly (50) in a direction away from the middle drum assembly (50).

8. The tire production device according to claim 7, characterized in that: The backing plate assembly (30) comprises: an expansion drive member (31), the expansion drive member (31) being arranged along the axial direction of the main shaft (10); A pad block (32) is abutted against the output end of the expansion drive member (31), and 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).

9. The tire production device according to claim 8, characterized in that: The output end of the expansion driving member (31) has a first inclined surface, the inner side of the pad block (32) has a second inclined surface, and the first inclined surface and the second inclined surface are in abutment and extrusion fit, and the expansion driving member (31) drives the pad block (32) to expand and contract by squeezing the second inclined surface through the first inclined surface.

10. The tire production device according to claim 8, characterized in that: 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). The advance and retreat drive member (33) is drivingly connected to the pad block (32) and can drive the pad block (32) to move axially along the main shaft (10) to block or avoid the roller (21).

11. The tire production device according to claim 7, characterized in that: At least one of the locking block assembly (40) and the middle drum assembly (50) comprises: A drive assembly (41); a transmission assembly (42), the transmission assembly (42) being drivingly connected to the drive assembly (41); A diameter reducing member (43) is connected to the transmission assembly (42) and can expand and contract along the radial direction of the main shaft (10) under the drive of the transmission assembly (42) to switch between the minimum diameter and the maximum diameter.

12. The tire production device according to claim 11, characterized in that: The drive assembly (41) is arranged along the axial direction of 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 drive assembly (41), and the other end of the transmission assembly (42) is connected to the diameter reducing member (43).

13. The tire production device according to claim 11, characterized in that: The drive assembly (41) comprises: cylinder; A piston is movably arranged in the cylinder and connected to the transmission assembly (42). The cylinder can form a plurality of air cavities of different sizes. When pressure is applied to the air cavities of 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) respectively forms the minimum diameter, the maximum diameter, and at least one intermediate diameter between the minimum diameter and the maximum diameter.

14. The tire production device according to claim 11, characterized in that: The drive assembly (41) comprises: cylinder; a piston, the piston being movably disposed 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 moving to the end of the cylinder, and an intermediate position between the contraction position and the expansion position, and when the elastic member (413) is in a natural state, the piston is located at the intermediate position, and when the piston is located at the contraction position, the intermediate position and the expansion position, the diameter-changing member (43) respectively forms the minimum diameter, at least one intermediate diameter and the maximum diameter with increasing diameters.

15. The tire production device according to claim 11, characterized in that: The drive assembly (41) comprises: 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 is threadably engaged with the lead screw and connected to the transmission assembly (42), the lead screw drives the nut to move axially between a contracted position, an intermediate position, and an expanded position, so that the reducer (43) forms the minimum diameter, at least one intermediate diameter, and the maximum diameter, the diameters of which increase in sequence.

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