The front Bumper Mould is one of the most important exterior parts of a car. It should not only have sufficient strength and rigidity, but also play a buffer role in the collision of the car, protect the body, pursue the harmony and unity with the body shape, and realize its own lightweight. To achieve this goal, the front bumper body of the car is now made of plastic, commonly known as injection-molded plastic bumper.
Structural analysis of bumper plastic parts
The shape of the front bumper is similar to the saddle. The material is PP+epdm-t20, and the shrinkage rate is 0.95%. PP is the main material of the bumper, and EPDM can improve the elasticity of the bumper cover. T20 refers to adding 20% talcum powder to the material, which can improve the rigidity of the bumper cover.
The characteristics of plastic parts are:
(1) The shape is complex, the size is large, and the wall thickness is relatively small, which belongs to large thin-walled plastic parts.
(2) The plastic parts have many bumps, many penetration parts, many reinforcing ribs, and the flow resistance of the injection melt is large.
(3) There are 3 buckles on the inside of the plastic part, and it is difficult to pull the core horizontally in each place.
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