Liquid Resin Molding System With Agitation-Mixing And Metered Supply
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Solution Overview
Problem
Existing liquid resin material supply systems require expensive injection devices and risk inadequate mixing and air bubble entrainment, leading to suboptimal molded article quality.
Innovation Solution
A liquid resin material molding system that includes an agitation-mixing mechanism for thorough mixing, a pump mechanism for feeding the mixture, and a fixed-quantity metering/supply mechanism that eliminates the need for an injection device, using a plunger and valves to ensure accurate and bubble-free material delivery to the mold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an injection device with a screw is used for mixing liquid resin material, then the material can be supplied to the mold, but the screw may fail to mix the material thoroughly and outside air may get sucked into the heating cylinder causing air bubbles
Solution Approach 1:
The invention extracts the mixing function from the injection device's screw and relocates it to a separate mixing tank. This separation allows dedicated mixing equipment to handle the liquid resin material without the complications of screw-based mixing in a high-pressure injection system, thereby achieving thorough mixing while preventing air bubble entrainment in the heating cylinder.
Solution Approach 2:
The invention introduces a mixing tank as an intermediary device between the material supply and the injection device. This intermediate stage allows for controlled mixing of the liquid resin material before it enters the heating cylinder, ensuring thorough mixing without compromising the injection process or introducing air bubbles.
2Productivity
If an injection device is used for liquid resin material supply, then the material can be injected into the mold, but the device cost becomes greater
Solution Approach 1:
The invention extracts the material supply function from the expensive injection device and assigns it to a simpler pump mechanism. This separation allows the injection device to focus solely on the injection function while the pump handles material supply, thereby reducing overall system cost while maintaining productivity.
Solution Approach 2:
The invention uses a pump mechanism that replicates the material supply capability of the injection device without requiring the complex high-pressure injection system. This allows for cost-effective material supply while maintaining the necessary functionality for productive operation.
3Productivity
If the inflow port is positioned at the distal end of the plunger, then the liquid material mixture can be supplied efficiently, but the material near the inflow port may accumulate and harden requiring cleaning
Solution Approach 1:
The invention positions the inflow port asymmetrically at the base end of the plunger rather than at the distal end, creating an asymmetric flow pattern that prevents material accumulation at the inflow port. This asymmetric configuration ensures continuous material flow through the plunger interior, eliminating the hardening issue while maintaining supply efficiency.
Solution Approach 2:
The invention inverts the conventional positioning of the inflow port from the distal end to the base end of the plunger. This inversion changes the flow dynamics such that material enters at the base and flows toward the distal end, preventing accumulation at the inflow port and eliminating the need for cleaning while maintaining efficient supply.
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 system achieves thorough mixing and bubble-free material supply, improving the quality of molded articles without the need for an injection device, enhancing metering accuracy and reducing costs.
Implementation Method 1
the plunger is furnished with a material flow passage for directing the liquid material mixture supplied from the inflow port to a distal end of the plunger, even when the plunger is placed at a maximum advance position
Implementation Method 2
an inflow valve, furnished to the first flow passage, for opening and shutting the first flow passage
Implementation Method 3
an outflow valve, furnished to the second flow passage, for opening and shutting the second flow passage
Implementation Method 4
plunger pushing means, furnished to the body, for pushing the plunger in an advancing direction
Data Source
AI summary
A liquid resin material molding system includes a mold, a mold clamping device for clamping the mold, and a supply device for supplying a liquid resin material to the mold. The supply device includes an agitation-mixing mechanism for agitation-mixing of a liquid resin material of an additive added to a main component, a pump mechanism for feeding the liquid material mixture obtained thereby, and a fixed-quantity metering/supply mechanism for metering a fixed quantity of the liquid material mixture fed thereto via a first flow passage by the pump mechanism, for intermittent supply to the mold through a second flow passage.