Tire Vulcanizing Apparatus Mold Gap Control
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Solution Overview
Problem
Existing tire vulcanization devices struggle to maintain a closed mold state during the vulcanization process, leading to gaps between sector molds and resulting in uneven tire finishes and reduced quality due to the inability to prioritize pressing on sector molds over the bolster plate.
Innovation Solution
A tire vulcanization device with a pressurizing mechanism that decreases the vertical gap between the upper and lower plates, combined with a lock mechanism to secure the container ring's position, ensuring the sector molds are assembled in an annular shape and maintaining a closed state, allowing for strong pressing of the upper side mold on the sector molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the container ring presses strongly on the sector molds to prevent gaps, then the sector molds are assembled in close contact, but the gap between the bolster plate and upper plate increases and the mold cannot be reliably maintained in a closed state
Solution Approach 1:
The connection between the container ring and bolster plate is divided into multiple independent vertical connection mechanisms distributed around the circumference. Each connection mechanism can independently adjust and maintain the vertical gap, allowing the system to simultaneously achieve strong pressing on sector molds and reliable closed state maintenance through coordinated action of multiple segments.
Solution Approach 2:
The vertical gap between the container ring and bolster plate is changed from a fixed parameter to a variable parameter that can be independently controlled at each connection mechanism. By adjusting this gap parameter dynamically, the system optimizes both the pressing force on sector molds and the closed state reliability during vulcanization.
2Force
If the downward movement of the bolster plate is restricted by the upper plate, then the pressing on sector molds is maintained, but the upward movement of the upper side mold is restricted and gaps form between sector molds and upper side mold
Solution Approach 1:
The vertical connection mechanisms between the container ring and bolster plate are designed to be dynamically adjustable rather than statically fixed. During mold closing, the connections can adapt their gap state to allow appropriate movement, preventing restriction of the upper side mold's upward movement while maintaining sufficient pressing force on the sector molds through the annular structure.
Solution Approach 2:
The problem of force transmission and movement restriction is solved by introducing a dimensional approach where the vertical gap is controlled independently at multiple circumferential positions. This allows the system to manage forces in the vertical dimension while maintaining contact in the radial dimension, preventing gap formation between sector molds and upper side mold.
3Reliability
If the vertical gap between upper plate and lower plate is decreased to close the mold, then the sector molds are assembled in annular shape, but the upper side mold cannot be strongly pressed on the sector molds
Solution Approach 1:
The pressing function is segmented into two independent systems: the container ring pressing on the sector molds radially, and the upper side mold pressing on the sector molds vertically. The vertical connection mechanisms between container ring and bolster plate are segmented to independently control the vertical gap, allowing the upper side mold to maintain strong pressing force even when the overall vertical gap is decreased for reliable mold closing.
Solution Approach 2:
The vertical connection mechanisms act as intermediaries between the container ring and bolster plate, mediating the force transmission and gap control. These intermediaries allow the system to decrease the overall vertical gap for reliable mold closing while maintaining sufficient pressing force on sector molds through the distributed connection points.
Data Source
AI summary
In a tire vulcanization device, a vertical position of a container ring is locked at a closed position by a lock mechanism. A pressurizing mechanism is operated so as to decrease a vertical gap between an upper plate and a lower plate. The lower plate is moved upward so that a segment is moved toward a center mechanism by a container ring and sector molds are assembled in an annular shape. A state where a predetermined vertical gap is formed between the container ring and a bolster plate by a vertical connection mechanism is created. An upper side mold disposed on a lower surface of the upper plate is closed by being pressed against an upper surface of each of the sector molds while maintaining a state where the sector molds are assembled in an annular shape.