Rubber molds are divided into four common molds according to the mold structure and product production process: compression molding molds, die casting molding molds, injection molding molds, extrusion molding molds, and some special rubber molds for producing special rubber products, such as inflatable molds, Dipping mold, etc. Here are four categories and characteristics of rubber molds.
1. Compression Molding
Also known as ordinary stamper. It puts the semi-finished rubber compound that has been mixed, processed into a certain shape and weighed directly into the mold, and then sent to the flat vulcanizing machine to pressurize and heat. The rubber compound is vulcanized under pressure and heat.
Features: The mold has a simple structure, strong versatility, wide application area, and convenient operation, so it accounts for a large proportion of rubber molded products.
2. Die casting mould
Also known as transfer mold or extrusion mold. It puts the compounded or simple semi-finished rubber compound or rubber block semi-finished product into the die-casting mold cavity, squeezes the rubber compound through the pressure of the die-casting plug, and makes the rubber compound enter the mold cavity through the pouring system Medium cure setting.
Features: It is more complicated than ordinary die. It is suitable for making thin-walled, slender and flexible products that cannot be suppressed or barely pressed by ordinary die, and rubber products with complex shapes and difficult to feed. Products produced with this mold have good compactness and superior quality.
3. Injection mould
It is to pre-heat the plastic material into a plastic state into the mold through the injection mold pouring system into the mold for curing.
Features: Complex structure, suitable for large-scale, thick-walled, thin-walled, complex-shaped products. High production efficiency, stable quality and automatic production.
4. Extrusion mold
The semi-finished products of 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 and transported to the vulcanization tank for vulcanization or used as pre-formed semi-finished rubber materials required by the compression molding method.
Features: high production efficiency, stable quality, and automatic production.
