High Precision Mold for Automobile Bumper

High precision mold for Automobile bumper: Automobile bumper products are usually relatively long and irregular in shape, and the structure is not too complicated. When designing the Automobile bumper High precision mold, attention should be paid to the construction of the PL surface, and sharp corners and straight bends should be avoided as much as possible to make the PL surface smooth. In addition, since the product is relatively large, in order to complete the filling in a short time, the injection speed will be relatively fast, which may easily lead to air entrapment, burning material and other undesirable conditions. Therefore, the PL surface must be well vented to quickly discharge the air in the mold cavity and facilitate filling. Because the product is relatively long, the Automobile bumper High precision mold is generally designed to be injected at multiple points during production, which will easily produce water lines during production, making the product brittle and easy to break at the water lines. In order to solve the water line problem,First, should make enough water line in the mold so that the mold temperature can be kept uniform during production and the temperature difference between each part is small. Second, if water lines still occur after the venting is done well, consider making an overflow groove to let the cold plastic material run out. In this way, combined with the high mold temperature during production, the water lines can basically be well solved and qualified products can be produced.

Automobile plastic parts mold: The structure of automobile plastic parts is relatively special, and the bones and columns are deep, so the venting problem must be fully considered in the mold design. The venting of bones and columns is not made of venting grooves like PL surface venting, but make insert venting. Inserts are made at the deepest part of the bones and columns, and a gap of 0.005mm is left between the inserts and the insert holes.Venting grooves are made on the side of the insert 5mm away from the material wall thickness position. The venting grooves should extend all the way to the vacant part of the mold base to facilitate the venting of gas from the mold. In this way, there will be no products with material shortages in bones and columns during injection molding production.