Compression Molding Die Gas Venting for Resin Residue Removal
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Solution Overview
Problem
The existing resin sealing methods face issues with resin residue accumulation and mold wear due to resin entering the gap between molds during compression molding, leading to uncleanliness and reduced mold lifespan.
Innovation Solution
A compression molding die with a first mold and a second mold configuration, featuring a space below the cavity with a gas inlet and outlet, and a seal member to manage resin residue through gas flow, reducing accumulation and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compression mold slides upward with respect to the frame-like mold during compression molding, then the molding process can be completed, but resin is drawn into the gap between the frame-like mold and compression mold causing resin residue accumulation and mold wear
Solution Approach 1:
The patent extracts the harmful resin that enters the gap between the frame-like mold and compression mold by introducing gas into the space below the cavity. This gas flow carries the resin out through the gas outlet, removing the harmful factor before it can cause residue accumulation and mold wear.
Solution Approach 2:
The patent uses gas (pneumatics) to solve the resin contamination problem. By introducing gas into the space below the cavity and directing it through the gas outlet, the system creates a pneumatic flow that removes resin from the gap area, preventing both residue accumulation and mold wear.
2Productivity
If resin enters the gap between frame-like mold and compression mold, then molding can proceed, but frequent disassembly and cleaning of molds is required
Solution Approach 1:
The patent extracts resin from the gap between molds during the molding process by using gas flow to carry it out through the gas outlet. This prevents resin accumulation that would otherwise require frequent cleaning interruptions.
Solution Approach 2:
The patent makes the resin removal action continuous by maintaining gas flow throughout the molding process. The gas continuously carries resin out of the gap area, ensuring the molds remain clean without interruption to the molding operation.
3Duration of action of stationary object
If resin accumulates as residue in the molds, then cleaning frequency increases, but mold lifespan decreases due to progressive wear
Solution Approach 1:
The patent extracts resin before it can accumulate and cause wear by using gas flow to remove it continuously during the molding process. This prevents the progressive wear that would otherwise shorten mold lifespan.
Solution Approach 2:
The patent converts the potentially harmful resin that enters the gap into a removable substance by using gas flow to carry it out through the gas outlet. The resin is transformed from a harmful accumulation into a controllable flow that can be efficiently removed, protecting the molds from wear.
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 extends mold lifespan, minimizes resin residue, and reduces mold cleaning frequency while preventing resin contamination in the molded product.
Implementation Method 1
introducing gas into the space from the gas inlet and discharging the gas from the gas outlet
Data Source
AI summary
A compression molding die includes a first mold and a second mold. The first mold includes a bottom surface member and a side surface member. A space is providable in the first mold by a step of at least one of an outer peripheral surface of the bottom surface member and an inner peripheral surface of the side surface member. The first mold includes a gas inlet capable of introducing gas into the space, a gas outlet through which the gas introduced into the space is dischargeable, and a seal member below the space.