Link Mechanism Roller Stabilization for Resin Film Stretching
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Solution Overview
Problem
Existing link mechanisms in resin-film stretch apparatuses are prone to lifting due to moments caused by the release of film holders, leading to potential derailment and wear debris issues, which current solutions do not adequately address.
Innovation Solution
A link mechanism with rollers fixed to brackets on the link shafts, allowing the rollers to maintain a rolling contact with the link retainer in both closed and open states, reducing wear debris and stabilizing the mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a guide plate is pressed against the film holder to release the film holder, then the film can be inserted into the released film holder, but a moment occurs in the link mechanism resulting in risk of lifting of the link mechanism
Solution Approach 1:
The roller is preliminarily positioned to contact the link retainer before the guide plate pressing operation. This preliminary contact creates a counteracting force that prevents the lifting moment caused by subsequent guide plate pressing, thus resolving the contradiction between ease of film insertion and link mechanism stability
Solution Approach 2:
The roller acts as an intermediary element between the link shaft and the link retainer. It transfers and distributes the forces during the film holder release operation, preventing direct transmission of the lifting moment to the link mechanism, thereby maintaining stability during film insertion
2Stability of the object's composition
If existing measures are adopted to suppress lifting of the link mechanism, then lifting is reduced, but wear debris issues and derailment risks remain
Solution Approach 1:
The roller provides a curved contact surface between the link shaft and link retainer, replacing point or line contact with surface contact. This curvature distributes contact forces, reduces stress concentrations, and prevents wear debris generation while maintaining reliable engagement and preventing derailment
Solution Approach 2:
The roller can rotate dynamically during operation, adapting to varying force conditions. This dynamic capability allows the contact point to adjust automatically, maintaining optimal force distribution and preventing both lifting and derailment under different operational conditions
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
The solution effectively suppresses lifting and reduces wear debris, enhancing the performance and stability of the link mechanism, thereby improving the quality of the resin film stretching process.
Implementation Method 1
a roller fixed to a link shaft via a bracket, the roller being contactable with a link retainer
Data Source
AI summary
Performance of a link apparatus is improved. A link mechanism (11C) included in the link apparatus includes, for example, a roller (110A) fixed to a link shaft (40A) via a bracket (100A), the roller (110A) being contactable with a link retainer (70).