Demolding Device for Thin-Walled Parts with Adaptive Support
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Solution Overview
Problem
Existing demolding methods for thin-walled parts with extremely small wall thickness relative to diameter can cause local deformation during demolding.
Innovation Solution
A demolding device with contour units and pullers that apply a circumferential force to maintain contact with the thin-walled part, using contact structures that move outward with the part's expansion to prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional demolding methods are used for thin-walled parts with extremely small wall thickness, then the demolding process can be completed, but local deformation occurs on the circumferential portion of the thin-walled part
Solution Approach 1:
The contact structure is designed to be movable in the thin-walled surface outward direction, allowing it to dynamically follow the expansion of the thin-walled part during demolding. This dynamic adjustment prevents rigid contact that would cause deformation, while maintaining sufficient contact to guide the demolding process.
Solution Approach 2:
The demolding device is divided into multiple independent contour units distributed in the circumferential direction. Each contour unit independently contacts and follows the thin-walled part's surface, allowing localized adaptation to the part's geometry while collectively providing comprehensive support during demolding.
2Stability of the object's composition
If the contact structure is made rigid to maintain stable contact with the thin-walled part, then contact stability is improved, but the thin-walled part deforms under applied load
Solution Approach 1:
The contact structure incorporates movable elements that can dynamically adjust their position in the thin-walled surface outward direction. This allows the contact structure to maintain stable contact while accommodating the part's expansion, preventing deformation through adaptive rather than rigid contact.
Solution Approach 2:
The contact structure's position parameters are allowed to change during the demolding process. By enabling movement in the thin-walled surface outward direction, the system adapts to the changing geometry of the expanding part, maintaining optimal contact without imposing rigid constraints that would cause deformation.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A demolding device that removes a thin-walled part from a mold, the thin-walled part being tubular and having a partially open wall, the demolding device including: contour units that are located in a circumferential direction of the thin-walled part and each of which includes a contact structure that contacts an outer surface of the thin-walled part and moves in a thin-walled surface outward direction extending away from the outer surface of the thin-walled part; and a puller that engages with edges of the partially open wall of the thin-walled part and that applies a load to the thin-walled part, the load including a force component acting in the circumferential direction of the thin-walled part. In response to application of the load from the puller to the thin-walled part, each of the contour units moves the contact structure to keep the contact structure in contact with the thin-walled part.