Mechanical Tire Drum with Synchronized Bead Filler and Sidewall Rolling
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Solution Overview
Problem
Existing tire building methods using mechanical drums are time-consuming and inefficient, while capsule drums face high costs and poor bead building quality, leading to high defective rates.
Innovation Solution
A method for building tires using a mechanical drum that includes controlling an attaching mechanism to roll a bead filler and a turn-up mechanism to support and roll the sidewall simultaneously, with a two-step rolling process and a pressure roller assembly to ensure precise attachment, and a mechanical drum structure with a spindle assembly, turn-up mechanism, and attaching mechanism to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mechanical drum is used for tire building, then cost is low, but tire building time is long
Solution Approach 1:
The tire building process is divided into distinct functional modules: bead filler attachment mechanism, sidewall turn-up mechanism, and attaching mechanism. Each mechanism operates independently but coordinates through the control system, allowing parallel execution of multiple operations to reduce overall building time while maintaining mechanical drum cost-effectiveness
Solution Approach 2:
The bead filler is attached to the carcass before the sidewall rolling process begins. This preliminary action allows the sidewall to be rolled onto a pre-prepared surface, reducing the complexity and time of the main attaching operation, thereby improving productivity without increasing cost
2Manufacturing precision
If capsule drum is used for tire building, then tire bead building quality is improved, but cost increases and capsule replacement is cumbersome
Solution Approach 1:
The patent replaces the expensive, reusable capsule with a simple mechanical drum structure that uses disposable or easily replaceable bead fillers. The mechanical drum provides sufficient precision for bead building while eliminating the complexity of capsule inflation, sealing, and replacement systems
Solution Approach 2:
The pneumatic capsule system is replaced with a purely mechanical drum structure featuring rollers and pressing mechanisms. This substitution eliminates the need for air supply systems, pressure control, and capsule replacement procedures, reducing device complexity while maintaining manufacturing precision through mechanical control
3Ease of manufacture
If mechanical drum with traditional process is used, then cost is low, but production efficiency is low
Solution Approach 1:
The tire building process is designed as a continuous operation where the bead filler attachment, sidewall turning, and final attaching occur in seamless sequence without idle transitions. The control system coordinates all mechanisms to operate continuously from raw materials to finished product, maximizing production efficiency while maintaining the cost-effective mechanical drum design
Solution Approach 2:
The patent employs accelerated processing through optimized mechanical forces and coordinated multi-mechanism operation. The simultaneous activation of bead filler attachment and sidewall turning mechanisms accelerates the overall process speed, improving production efficiency without requiring expensive equipment upgrades
Data Source
AI summary
The present disclosure provides a tire building method and a mechanical drum. The tire building method includes: controlling an attaching mechanism to roll a bead filler to attach the bead filler on a carcass of the tire; while attaching the bead filler or during a process of attaching the bead filler, controlling a turn-up mechanism to support a sidewall of a tire; and after the bead filler is attached, controlling the turn-up mechanism to roll the sidewall of the tire. The tire building method according to the present disclosure solves problems of long time of building the tire and low efficiency of building the tire in the related art.