Vulcanization Of Rubber Products(part 2)

2. Mechanical dressing

Wire harness Seal Manufacturer shares that mechanical dressing refers to the process of trimming rubber mould products with various special machines and corresponding technological methods. It is a more advanced dressing method at present.

(1) with the help of pressure machinery, stamping die and punching knife, the glue edge of the product can be removed. This method is suitable for the products and the model products, such as bottle stoppers, leather bowls and so on, whose glue edges can be placed on the die or the bottom plate of the die. For the products with higher gum content and smaller hardness, the impact method is generally used to impact the cutting edge, so that the greater elasticity of the products can reduce the back part of the knife is not neat, side sag; And for the products with lower gum content and higher hardness, the method of die cutting can be adopted directly. In addition, the blanking is also divided into cold cutting and hot cutting, cold cutting refers to the cutting at room temperature, the equipment requires a high pressure, the quality of the blanking is good; Hot cutting refers to the high temperature -f, cutting should prevent high temperature contact products for too long, affecting the quality of products.

(2) mechanical cutting trimming is suitable for trimming large size products, the use of cutting tools. One side of cutting machinery are dedicated machines, different products using different cutting knives. For example, the tire vulcanized surface air holes and exhaust parts have different lengths of rubber strips, must be in the tire rotation conditions with grooves to cut the rubber strip.

(3) mechanical grinding trimming for mold rubber products with inner hole and outer circle, the grinding square is usually used. Grinding of cutting for particle must be the thickness of the grinding wheel, grinding trimming precision is low, the grinding surface rough ^ may have residual sand, affect the use effect.

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