Mold Core Holding Device for Controlled Demolding
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Solution Overview
Problem
Mold cores in existing molding devices for producing fuselage shell elements often fall out uncontrolled when the shell element is removed, leading to potential damage to the mold core and mold part, particularly when using thermoplastic matrix materials.
Innovation Solution
Incorporating a holding device within the mold core that engages with the supporting element of the shell element, such as a pin or flexible element, to securely hold the mold core in place during removal, preventing uncontrolled fall and allowing for controlled demolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mold cores are used to support supporting elements during production, then the supporting elements are properly positioned and supported, but the mold cores fall out uncontrolled when the shell element is removed from the mold
Solution Approach 1:
The holding device is integrated into the mold core structure beforehand, creating an engagement mechanism that prevents uncontrolled falling during the removal process. This preliminary preparation ensures that when the shell element is removed from the mold, the mold core remains securely attached through the holding device's engagement with the supporting element.
Solution Approach 2:
The holding device acts as an intermediary between the mold core and the supporting element. It provides a controlled connection mechanism that allows the mold core to be securely held during removal while enabling controlled release when needed, thus mediating between the need for secure positioning and controlled removal.
2Strength
If mold cores protrude into cavities to support supporting elements, then the supporting elements are properly supported during hardening, but the mold cores and mold part may be damaged when mold cores fall out
Solution Approach 1:
The holding device is pre-integrated into the mold core structure to create an engagement mechanism with the supporting element. This preliminary preparation prevents the mold core from falling out uncontrolled during shell element removal, thereby preventing damage to both the mold core and mold part while maintaining the supporting function during hardening.
Solution Approach 2:
The holding device converts the potential harm of mold core detachment into a beneficial controlled connection. By designing the holding device to engage with the supporting element, the system transforms the risk of uncontrolled falling and damage into a controlled, secure attachment that protects both the mold core and mold part during the removal process.
Data Source
AI summary
A molding device for producing a shell element reinforced with supporting elements and composed of fiber composite material, including a mold part with a mold surface including a cavity for receiving a supporting element of the shell element, and a mold core to be arranged in the cavity and to support the supporting element on the shell element when the supporting element of the shell element is arranged in the cavity. The molding device enables prevention of the mold cores from falling out in an uncontrolled manner when the shell element is removed from the mold as the mold core includes a holding device to engage with the supporting element of the shell element to be produced located in the cavity and to hold the mold core on the supporting element when the shell element to be produced is released from the mold part.