Mold for injection molding and device for producing molded resin article

JPWO2025009597A1Pending Publication Date: 2025-01-09
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Patent Information

Application Number
JP2025531599
Authority / Receiving Office
JP · JP
Patent Type
Applications
Priority Date
2023-07-06
Filing Date
2024-07-04
Publication Date
2025-01-09

AI Technical Summary

Technical Problem

Existing injection molding systems face issues with mold sticking due to pressure from resin materials, leading to difficulty in opening the mold and reducing efficiency, especially during mold replacement, as they require large forces and complex mechanisms.

Method used

An injection mold with a detachment assisting mechanism that includes a pneumatic drive section and a toggle mechanism to generate a large force for mold opening, using a slider portion to press the second mold in the mold opening direction, eliminating the need for hydraulic cylinders and reducing the size and complexity of the mold opening mechanism.

Benefits of technology

The solution effectively prevents mold sticking, allows for easier and faster mold replacement, and reduces the burden on workers by using air pressure, which eliminates oil mist and leakage, making the process more efficient and suitable for clean environments.

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Abstract

This mold for injection molding comprises a first mold and a second mold to be clamped with the first mold. The first mold has a separation assistance mechanism including a slider part for pressing the second mold in a mold-opening direction. The separation assistance mechanism includes: a drive part which works by air pressure; and a toggle mechanism which converts the force of the drive part into a movement of the slider part in the mold-opening direction.
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