Molding Mold Panel Fixing Mechanism Burr Prevention
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Solution Overview
Problem
Conventional molding molds for composite bodies suffer from the issue of burr generation due to the gap between the fixed mold and the sliding mold, leading to peeling-off between the metal body and the resin portion during mold separation.
Innovation Solution
The molding mold incorporates a panel fixing mechanism that fixes the edge portion of the metal panel on the mold on the resin member side in an open state, eliminating the need for a movable body within the molding space and thus preventing burr formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a sliding mold is used to form an exposed metal portion, then the exposed metal portion can be formed, but burr is generated due to the gap between the fixed mold and sliding mold
Solution Approach 1:
The invention extracts the harmful sliding mold from the system and replaces it with a simple panel fixing mechanism. By removing the sliding mold that creates gaps and burr, the patent achieves clean exposed metal portions without the harmful byproducts of conventional sliding mold methods.
Solution Approach 2:
The patent segments the mold into a fixed mold and a movable mold that work together, with the panel fixing mechanism securing the metal panel to the fixed mold. This segmentation eliminates the need for a sliding mold while still achieving the exposed metal portion formation through controlled resin injection.
2Manufacturing precision
If a sliding mold protrudes into the molding space, then an exposed metal portion can be formed, but the molten resin intrudes in the gap and generates burr
Solution Approach 1:
The invention removes the complex sliding mold structure that protrudes into the molding space and replaces it with a simpler panel fixing mechanism. This extraction eliminates the gap problem while maintaining the ability to position the exposed metal portion accurately through the fixed mold design.
Solution Approach 2:
Instead of using a movable sliding mold to create the exposed metal portion, the invention inverts the approach by using a fixed mold with a panel fixing mechanism to secure the metal panel, allowing the resin to be injected and form the exposed metal portion without requiring a protruding movable component.
3Productivity
If burr is generated on the composite body, then the molding process can complete, but peeling-off occurs between the metal body and resin portion during mold separation
Solution Approach 1:
The invention extracts the burr generation problem by eliminating the sliding mold gap, thereby preventing the root cause of peeling-off. Without burr generation, the bonding strength between metal and resin is preserved during mold separation.
Solution Approach 2:
The panel fixing mechanism performs preliminary action by securing the metal panel to the fixed mold before resin injection. This preliminary securing prevents resin intrusion into gaps and burr formation, ensuring strong bonding from the outset rather than addressing peeling-off after it occurs.
4Productivity
If a sliding mold is used to form exposed metal portion, then the molding process can proceed, but additional burr removal step is required
Solution Approach 1:
The invention extracts the burr removal step from the manufacturing process by eliminating burr generation at its source. By removing the sliding mold that creates burr, the patent simplifies the manufacturing process while maintaining productivity.
Solution Approach 2:
The invention converts the harmful burr generation into a benefit by using the panel fixing mechanism to prevent resin intrusion entirely. What was previously a harmful byproduct requiring removal becomes a clean process that eliminates the need for additional manufacturing steps.
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
This configuration allows for the formation of an exposed metal portion on the edge of the metal panel without generating burr, enhancing the bonding between the metal and resin and reducing manufacturing costs by eliminating the need for additional burr removal processes.
Implementation Method 1
a panel fixing mechanism (4) configured to fix an edge portion of the metal panel (P1) to a mold on the resin member (R) side among the fixed mold (2) and the movable mold (3), in a state in which the fixed mold (2) and the movable mold (3) are open
Data Source
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AI summary
A molding mold for a composite body 1 for forming a composite body A that integrally molds a resin member R on one main surface of a metal panel PI, including at least a fixed mold 2 and a movable mold 3, and including, in a mold on the resin member side among the fixed mold 2 and the movable mold 3, a panel fixing mechanism 4 that fixes an edge portion of the metal panel PI in a state in which the fixed mold 2 and the movable mold are open. The molding mold for a composite body 1 eliminates a movable body with respect to a molding space of the resin member R and overcomes the generation of burr in the resin member R, and forms an exposed metal portion B on the edge portion of the metal panel PI on the resin member R side by the panel fixing mechanism 4.