Rubber molds are divided into four common molds according to the mold structure and product production process: pressing molds, die-casting molds, injection molding molds, extrusion molding molds, and some special rubber molds for the production of special rubber products, such as inflatable molds, Dip mold, etc.
1. Press molding die
Also known as ordinary stamping. It is to directly put the semi-finished rubber compound that has been kneaded, processed into a certain shape and weighed into a mold, and then sent to a flat vulcanizer for pressure and heating. The rubber compound is vulcanized and formed under the action of pressure and heating.
Features: The mold has simple structure, strong versatility, wide application and convenient operation, so it occupies a large proportion in rubber molded products.
2. Die casting mould
Also known as transfer die or extrusion die. It is to put the compounded compound or semi-finished rubber block with a simple shape and a certain limit into the die-casting mold cavity, squeeze the compound through the pressure of the die-casting plug, and make the compound enter the mold cavity through the pouring system. Medium vulcanization setting.
Features: It is more complicated than ordinary compression molds, and is suitable for the production of thin-walled, slender and easily bendable products that cannot be pressed or barely pressed by ordinary molding, as well as rubber products with complex shapes and difficult to feed. The products produced by this mold have good compactness and superior quality.
3. Injection Molding Mould
It is to inject the preheated plastic material into the mold through the pouring system of the injection mold to form the vulcanization.
Features: complex structure, suitable for large-scale, thick-walled, thin-walled, and complex-shaped products. High production efficiency, stable quality, and automatic production.
4. Extrusion die
The rubber profile semi-finished products of various cross-sectional shapes are made through the molding die of the machine head to achieve the purpose of preliminary modeling, and then sent to the vulcanization tank after cooling and shaping for vulcanization or used as pre-formed semi-finished products required by the compression molding method.
Features: High production efficiency, stable quality, and automatic production.
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