US-12617168-B2 - Tire production method and apparatus

US12617168B2US 12617168 B2US12617168 B2US 12617168B2US-12617168-B2

Abstract

The tire production device includes a main shaft and a turn-up rod assembly, a shim plate assembly, a lock block assembly and a middle drum assembly. The tire production method includes: adjusting initial diameters of the shim plate assembly, the lock block assembly and middle drum assembly, and adhering a sizing material; installing a tire rim outside the lock block assembly, increasing the diameter of the lock block assembly, and making it abut against and lock the tire rim; adjusting the diameter of the shim plate assembly and the middle drum assembly, so that outer surfaces are flush; turning over the turn-up rod assembly to adhere the sizing material to a tire side surface, and making the turn-up rod assembly move reversely and reset; decreasing the diameters of the shim plate assembly, the lock block assembly and the middle drum assembly and removing the tire from the main shaft.

Inventors

XIAOSONG SUN
Xue Li
YIHANG YU
Meng Hu
Xingrui Li
Jie Hu

Assignees

MESNAC CO., LTD.
QINGDAO MESNAC MACHINERY & ELECTRIC ENGINEERING CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20211129
Priority Date: 20201231

Claims (11)

1 . A tire production apparatus, comprising: a main shaft; a turn-up rod assembly, which is configured for processing a side of a tire; a shim plate assembly, the shim plate assembly is sleeved on the main shaft, and expands and retracts along a radial direction of the main shaft; a lock block assembly, the lock block assembly is sleeved on the main shaft, and expands and retracts along the radial direction of the main shaft; a middle drum assembly, the middle drum assembly is sleeved on the main shaft, and expands and retracts along the radial direction of the main shaft, there are a plurality of the shim plate assemblies, the lock block assemblies and the turn-up rod assemblies, and the lock block assembly, the shim plate assembly and the turn-up rod assembly are arranged in sequence along a direction away from the middle drum assembly on both sides of the middle drum assembly; wherein the shim plate assembly comprises: an expansion actuator arranged along an axial direction of the main shaft; a shim plate block, the shim plate block abuts against an output end of the expansion actuator, and the shim plate block-expands and retracts along the radial direction of the main shaft under a drive of the expansion actuator; wherein the output end of the expansion actuator is provided with a first slope, an inner side of the shim plate block is provided with a second slope, the first slope and the second slope abut against and are pressed against each other, and the expansion actuator presses the second slope by the first slope to drive the shim plate block to expand and retract.
2 . The tire production apparatus as claimed in claim 1 , wherein one end of the turn-up rod assembly close to the middle drum assembly is provided with a roller, the shim plate assembly further comprises a forward and backward actuator, the forward and backward actuator is connected to the shim plate block in a drive manner, and drives the shim plate block to move along the axial direction of the main shaft, so as to block or avoid the roller.
3 . The tire production apparatus as claimed in claim 1 , wherein at least one of the lock block assembly and the middle drum assembly comprises: a drive assembly; a transmission assembly, the transmission assembly is connected to the drive assembly in a drive manner; and a diameter-reducing member, the diameter-reducing member is connected to the transmission assembly and expands and retracts along the radial direction of the main shaft driven by the transmission assembly to switch between a minimum diameter and a maximum diameter.
4 . The tire production apparatus as claimed in claim 3 , wherein the drive assembly is arranged along an axial direction of the main shaft, the transmission assembly is bent, one end of the transmission assembly is connected to an output end of the drive assembly, and the other end of the transmission assembly is connected to the diameter-reducing member.
5 . The tire production apparatus as claimed in claim 3 , wherein the drive assembly comprises: an air cylinder; a piston, the piston is movably arranged in the air cylinder and connected to the transmission assembly, the air cylinder forms a plurality of air chambers of different sizes, the piston moves different distances when pressuring the plurality of air chambers of different sizes, and the piston moves between a retracted position and an expanded position that move to an end of the air cylinder, and a mid position located between the retracted position and the expanded position, so that the diameter-reducing member respectively forms the minimum diameter and the maximum diameter, and at least one mid diameter between the minimum diameter and the maximum diameter.
6 . The tire production apparatus as claimed in claim 3 , wherein the drive assembly comprises: an air cylinder; a piston, the piston is movably arranged in the air cylinder; an elastic member, the elastic member abuts against the piston and is connected to the transmission assembly, the piston has a retracted position and an expanded position that move to an end of the air cylinder, and a mid position located between the retracted position and the expanded position, the piston is located in the mid position when the resilient member is in a natural state, when the piston is in the retracted position, the mid position and the expanded position, the diameter-reducing element respectively forms the minimum diameter, at least one mid diameter and the maximum diameter which increase successively.
7 . The tire production apparatus as claimed in claim 3 , wherein the drive assembly comprises: a motor; a screw rod, the screw rod is connected to the motor in a drive manner and rotates driven by the motor; a nut, the nut is fitted with the screw rod by threads and connected to the transmission assembly, the screw rod drives the nut to move axially between a retracted position, a mid position and an expanded position, so that the diameter-reducing member forms the minimum diameter, at least one mid diameter and the maximum diameter which increase successively.
8 . A tire production method using the tire production apparatus of claim 1 , the tire production method comprises: adjusting initial diameters of the shim plate assembly, the lock block assembly and the middle drum assembly, and adhering a sizing material; installing a tire rim outside the lock block assembly, increasing a diameter of the lock block assembly, and making the lock block assembly abut against and lock the tire rim; adjusting diameters of the shim plate assembly and the middle drum assembly, so that outer surfaces of the shim plate assembly, the lock block assembly and the middle drum assembly are flush and form a flat and uniform surface; turning over the turn-up rod assembly to adhere the sizing material to a side surface of the tire, and making the turn-up rod assembly move reversely and reset after the adhering is completed; decreasing the diameters of the shim plate assembly, the lock block assembly and the middle drum assembly and removing the tire from the main shaft; wherein before turning over the turn-up rod assembly, a forward and backward actuator of the shim plate assembly drives a shim plate block of the shim plate assembly to move axially, and enables the shim plate block to avoid a roller of the turn-up rod assembly, and then turning over the turn-up rod assembly, so that the roller of the turn-up rod assembly presses the sizing material to adhere the sizing material to the side surface of the tire; and wherein when adjusting the diameter of the shim plate member, the first slope of the expansion actuator of the shim plate member interacts with the second slope of the shim plate block of the shim plate member, and the diameter of the shim plate block is adjusted to a desired value.
9 . The tire production method as claimed in claim 8 , wherein when adjusting the initial diameters, if a size of a tire to be processed is a first preset size, retracting the shim plate assembly, and adjusting the diameters of the lock block assembly and the middle drum assembly to a minimum diameter, and if the size of the tire to be processed is a second preset size greater than the first preset size, expanding the shim plate assembly, and adjusting the diameters of the lock block assembly and the middle drum assembly to a mid diameter, and the mid diameter is at least one between the minimum diameter and a maximum diameter.
10 . The tire production method of claim 8 , wherein when adjusting the diameter of at least one of the lock block assembly and the middle drum assembly, driving a piston of a drive assembly of the lock block assembly or the middle drum assembly to move different distances by pressuring different air chambers of an air cylinder of the drive assembly, so that a transmission assembly of the lock block assembly or the middle drum assembly drives a diameter-reducing member of the lock block assembly or the middle drum assembly to adjust to a minimum diameter, a mid diameter or a maximum diameter; or driving the piston to a retracted position or an expanded position by pressuring the air cylinder of the drive assembly, or not pressuring the air cylinder, the piston moves to a mid position under an action of an elastic member of the drive assembly, so that the transmission assembly drives the diameter-reducing member to adjust to the minimum diameter, the maximum diameter or the mid diameter; or driving a screw rod of the drive assembly to rotate by a motor of the drive assembly, and the screw rod drives a nut of the drive assembly to move axially, so that the diameter-reducing member adjusts to the minimum diameter, the mid diameter or the maximum diameter.
11 . The tire production method as claimed in claim 8 , wherein when adjusting the diameters of the shim plate assembly, the lock block assembly and the middle drum assembly, the adjustment is performed by stepwise adjustment or stepless adjustment.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present invention claims priority to and the benefit of Chinese Patent Application No. 202011636146.7, filed to the China National Intellectual Property Administration (CHIPA) on 31 Dec. 2020, which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present invention relates to the technical field of tire processing, and in particular to a tire production method and apparatus. BACKGROUND TECHNOLOGY At present, a building drum for tire building is divided into a capsule drum and a mechanical drum. The main difference between the two drums is different in a turn-up mode. The capsule drum is turned up and inflated by a turn-up capsule, and the mechanical drum is turned up by a turn-up rod. In terms of the tire building efficiency, the mechanical drum is much higher than the capsule drum, so the mechanical drum on the semi-steel building machine has a great market share. However, the structure of the mechanical building drum is complex, and replacing the size of the tire must be achieved by replacing a side drum. The tire is produced on the order in most tire factories of general scale. Thus, the number of times of replacing the side drum is relatively large, and the time of replacing the side drum once is generally about 20-30 minutes, this time to replace the side drum represents a large loss to the tire factory. SUMMARY OF THE INVENTION The main purpose of the present invention is to provide a tire production method and apparatus, so as to solve the problem in the related art that the replacement of tire size for a mechanical building drum is time-consuming and laborious. In order to achieve the described object, some embodiments of the present invention provide a tire production method, a tire production apparatus includes a main shaft and a turn-up rod assembly, a shim plate assembly, a lock block assembly and a middle drum assembly which are sleeved outside the main shaft. The tire production method includes: adjusting initial diameters of the shim plate assembly, the lock block assembly and the middle drum assembly, and adhering a sizing material; installing a tire rim outside the lock block assembly, increasing the diameter of the lock block assembly, and making the lock block assembly abut against and lock the tire rim; adjusting the diameters of the shim plate assembly and the middle drum assembly, so that outer surfaces of the shim plate assembly, the lock block assembly and the middle drum assembly are flush and form a flat and uniform surface; turning over the turn-up rod assembly to adhere the sizing material to a side surface of the tire, and making the turn-up rod assembly move reversely and reset after the adhering is completed; decreasing the diameters of the shim plate assembly, the lock block assembly and the middle drum assembly and removing the tire from the main shaft. In some embodiments, when adjusting the initial diameters, if a size of the tire to be processed is a first preset size, retracting the shim plate assembly, and adjusting the diameters of the lock block assembly and the middle drum assembly to a minimum diameter, if the size of the tire to be processed is a second preset size greater than the first preset size, expanding the shim plate assembly, and adjusting the diameters of the lock block assembly and the middle drum assembly to a mid diameter, and the mid diameter is at least one. In some embodiments, before turning over of the turn-up rod assembly, a forward and backward actuator of the shim plate assembly drives a shim plate block of the shim plate assembly to move axially, and enables the shim plate block to avoid a roller of the turn-up rod assembly, and then turning over of the turn-up rod assembly, so that the rollers of the turn-up rod assembly press the sizing material to adhere the sizing material to the side surface of the tire. In some embodiments, when adjusting the diameter of the shim plate assembly, a first slope of an expansion actuator of the shim plate assembly interacts with a second slope of the shim plate block of the shim plate assembly, and a diameter of the shim plate block is adjusted to a desired value. In some embodiments, when adjusting the diameter of at least one of the lock block assembly and the middle drum assembly, driving a piston of a drive assembly of the lock block assembly (40) or the middle drum assembly (50) to move different distances by pressuring different air chambers of an air cylinder of the drive assembly, so that a transmission assembly of the lock block assembly or the middle drum assembly drives a diameter-reducing member of the lock block assembly or the middle drum assembly to adjust to a minimum diameter, the mid diameter or a maximum diameter; or driving the piston to a retracted position or an expanded position by pressuring the air cylinder of the drive assembly, or not pressuring the air cylinder, the piston moves to a mid position under an action of