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Classification And Characteristics Of Rubber Injection Molding Techniques
Compression molding die
Also known as ordinary compression mold. It puts the mixed, processed into a certain shape and weighed semi-finished rubber material directly into the mold, and then sends it to the plate vulcanizer for pressure and heating. The rubber material is vulcanized and formed under pressure and heating.
Features: The mold has simple structure, strong versatility, wide range of use and convenient operation, so it occupies a large proportion of rubber molded products.
Die casting mould
Also known as transfer mold or extrusion mold. It is to put the mixed, simple shape, a certain limited amount of semi-finished rubber or rubber block into the die-casting mold cavity, squeeze the rubber through the pressure of the die-casting plug, and make the rubber enter the mold cavity through the pouring system Middle vulcanization stereotypes.
Features: It is more complex than ordinary compression molds, and is suitable for making thin-walled, slender and flexible products that cannot be compressed or barely compressed by ordinary compression molding, and rubber products with complex shapes and difficult to feed. The products produced by this mould have good compactness and superior quality.
Injection molding mold
It is to inject the rubber material preheated into a plastic state into the mold through the pouring system of the injection mold for shaping and curing.
Features: complex structure, suitable for large-scale, thick-walled, thin-walled, and complex-shaped products. The production efficiency is high, the quality is stable, and automatic production can be realized.
Semi-finished rubber profiles with various cross-sectional shapes are made by the molding die of the machine head to achieve the purpose of preliminary modeling, and then cooled and shaped to be transported to the vulcanization tank for vulcanization or used as the preformed semi-finished rubber material required by the compression molding method.
Features: High production efficiency, stable quality, and automatic production.