A rubber mold is an industrial tool used to manufacture rubber products of specific shapes. By applying pressure and heat within the mold cavity, raw rubber (unvulcanized rubber) fills the cavity and undergoes a vulcanization reaction to achieve the desired product.
Its core function is to use precisely designed cavities to shape, size, and surface details of rubber products, making it a key piece of equipment in the rubber processing industry.
Main Classifications: Based on different molding processes, rubber molds are mainly classified into the following categories:
Compression Molding Molds: Pre-formed rubber material is placed into an open mold cavity and vulcanized under pressure and heat using a flat vulcanizing machine. Simple structure, highly versatile, and widely used.
Die Casting Molds: Rubber material is first placed in the feeding chamber and then extruded into a closed cavity through a die-casting plug. Suitable for thin-walled, slender, or complex-shaped products that are difficult to feed.
Injection Molding Molds: After plasticizing in the injection molding machine barrel, the rubber material is injected under high pressure into a closed cavity. High production efficiency, stable quality, suitable for automated mass production of complex parts.
Extrusion molding die: Used for continuous production of rubber profiles (such as sealing strips and hoses), where rubber material is extruded through the die head to a specific cross-sectional shape.