Tire Building Machine Boost Turn-Up Mechanism
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Solution Overview
Problem
Existing tire forming machines face challenges in achieving synchronous and isodynamic thrust for tire turn-up, leading to unstable and unbalanced pressure distribution, which can result in air bubbles being trapped in the tire, affecting processing quality and safety.
Innovation Solution
The implementation of a mechanical boost turn-up method using symmetrical first and second boost devices along the axial direction of the forming drum, driven by axial drive devices, to provide simultaneous, controllable, and adjustable thrust to the Bladder or turn-up rods, ensuring stable and evenly distributed pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pneumatic devices are used to drive Bladder or turn-up rods, then the turn-up operation can be performed, but the thrust exerted on two sides of the tire blank is unstable and unbalanced, leading to air bubbles being preserved in the tire
Solution Approach 1:
The patent replaces the pneumatic drive system with a mechanical drive system. Specifically, it uses a motor-driven reel mechanism where a reel rotates to wind or unwind a wire rope, which in turn drives the turn-up rods through connecting mechanisms. This mechanical substitution eliminates the instability and unbalance issues inherent in pneumatic systems, providing stable and controllable thrust for synchronous turn-up operation.
Solution Approach 2:
The patent incorporates feedback control mechanisms to monitor and adjust the thrust applied by each turn-up rod. Sensors detect the position and force applied, and the control system adjusts the motor speed and torque in real-time to ensure both sides exert equal and stable thrust throughout the turn-up process, preventing air bubble formation.
2Ease of manufacture
If pneumatic devices are used for turn-up operation, then the system can operate, but the pneumatic drive system is complex and expensive
Solution Approach 1:
The patent replaces the complex pneumatic drive system with a simpler mechanical drive system using motors and wire ropes. This substitution reduces the number of components (no need for compressors, air lines, valves, and pressure regulators), simplifies the system architecture, and lowers both manufacturing and maintenance costs while improving reliability.
Solution Approach 2:
The mechanical drive system designed in the patent can be applied to various tire sizes and types by adjusting motor parameters and reel dimensions, providing a universal solution that replaces specialized pneumatic systems. This multi-functionality reduces the need for multiple different drive systems for different applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the quality of tire blank formation by reducing air bubbles and simplifying pneumatic drive systems, lowering manufacturing costs, and optimizing the forming technology.
Implementation Method 1
a first boost device arranged along an axial direction at a first side part of the belt drum, wherein the first boost device is capable of pushing a Bladder or a turn-up rod at one side of the forming drum along the axial direction under the drive of an axial drive device
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention discloses a tire forming machine and a boost turn-up method thereof. Mechanical boost turn-up method and device are adopted. Axial thrust is provided to Bladder or turn-up rods through mechanical boost devices at two sides of a forming drum in simultaneous, isodynamic and persistent manners. Thus, the Bladder or the turn-up rods are assisted to finish the overall turn-up process, so as to achieve a turn-up operation with stable and evenly distributed pressure, and improve the tire blank forming quality. The boost turn-up method comprises the steps as follows: a forming machine comprises a belt drum which is carried and driven by a belt drum case, and a forming drum which is carried and driven by a forming drum case; a first boost device which is arranged along the axial direction is arranged at the side part of the belt drum; a second boost device which is arranged along the axial direction is arranged at the side part of the forming drum; the first boost device and the second boost device are symmetrical along the vertical center line of the forming drum in the turn-up preparation process of a tire blank; the first boost device and the second boost device push the Bladder or the turn-up rods towards the center from two sides of the forming drum. Thus, the same thrust is simultaneously exerted to assist implementation of the turn-up operation.