Plastic Extrusions Mould Lighting Parts
Extrusion mold is the core part of extrusion production. The state of extrusion mold technology is directly related to the stability of extrusion production, the quality of extruded products, the efficiency of extrusion production and the service life of the mold itself. Therefore, the design of the extrusion mold is very important. In the design of the nose, the following points should be noted:
The inner cavity of the nose should be streamlined
In order to make the material evenly extrude along the flow path of the machine head, to avoid the overheating decomposition of the material due to stagnation, it must not be sharply reduced in the machine head, and there should be no dead angles and stagnant areas. The flow path should be smoothed as much as possible. Surface roughness Ra value is 0.4μm
Sufficient compression ratio
According to the different types of plastic products and plastics, it is designed to produce a sufficient compression ratio head to eliminate the joint seam caused by the shunt bracket to make the product dense.
Correct section shape
Due to the properties, pressure, density, shrinkage and other factors of the plastic, the shape of the die-forming section of the machine head is different from the true cross-sectional shape of the product. This factor should be considered in the design so that the die has a reasonable cross-sectional shape. .
Compact and easy to disassemble
Under the condition of satisfying the mechanical properties, it is necessary to design a nose with a rhythm walking, a tight joint, a uniform heat transfer, convenient disassembly and assembly, and no leakage.
Reasonable material selection
The machine head should be made of steel with corrosion resistance, friction resistance, good tensile strength and high hardness. Some are also chrome-plated depending on the situation.