Tread Extraction Assembly With Linear Clamping for Mold Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The removal of vulcanized rubber molded articles, such as tire treads, from molds is challenging due to features like substantial height, negative draft angles, and closely spaced sipes, which can lead to tearing or cracking during extraction.
Innovation Solution
A tread extraction assembly comprising a base frame, first and second clamping assemblies, and a linear rail system, allowing for controlled clamping and translation of the tire tread to facilitate removal without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple pulling is used to remove the tread from the mold, then the operation is simple, but the tread may be stretched, torn, or cracked
Solution Approach 1:
The removal operation is segmented into multiple controlled stages: initial clamping at a first location, translation to a second location, and controlled release. This segmentation allows the tread to be handled in controlled portions rather than pulled as a whole, preventing stress concentration and damage.
Solution Approach 2:
The clamping assembly transitions dynamically between different locations (first location and second location) along the mold. This dynamic positioning allows the clamping force to be applied at optimal points during the removal process, enabling controlled extraction without causing damage to the tread structure.
2Reliability
If clamping force is applied to hold the tread, then the tread can be securely extracted, but the clamping assembly becomes more complex
Solution Approach 1:
The clamping assembly is designed as a multi-functional device that can clamp the tread at different locations, translate along the mold, and release control. This universal design allows a single assembly to perform multiple operations (clamping, translating, holding) that would otherwise require separate devices, achieving reliable tread holding without excessive complexity.
Solution Approach 2:
The clamping assembly acts as an intermediary between the removal system and the tread. It provides controlled mechanical interaction, distributing forces appropriately and enabling secure holding while maintaining manageable system complexity through its intermediate role in the extraction process.
3Productivity
If the tread is extracted quickly, then productivity is improved, but the risk of damage increases
Solution Approach 1:
The extraction process maintains continuous controlled action through the translation of the clamping assembly from the first location to the second location along the mold. This continuous controlled movement enables relatively fast extraction while preventing sudden stress changes that would cause tearing or cracking, thus maintaining both productivity and product integrity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A tread extraction assembly is provided. The tread extraction assembly (300) includes a base frame (302), a first clamping assembly (304), and a second clamping assembly (306). The base frame defines a leading edge. The first clamping assembly includes a first clamp (324) movable relative to the base frame. The second clamping assembly is coupled to the base frame and includes a second clamp (326) positioned proximate to the leading edge. The tread extraction assembly also includes a linear rail (320) and a linear bearing. The first clamping assembly is coupled to the linear bearing and movable along the linear rail by a linear actuator.