Automobile molds are used to produce automobile parts. According to different auto parts, auto moulds can be divided into auto bumper moulds, auto seat moulds, auto rearview mirror moulds... For auto bumpers, auto bumpers are one of the most important exterior auto parts. The bumper must have sufficient strength and rigidity to play a buffering role in a car collision. In addition, it must meet the requirements of light vehicles. Therefore, the body of the bumper is currently made of plastic, usually called a plastic bumper, which is molded by Automotive mould injection.
Structural analysis of automobile bumper
(1) The shape is complex, the size is large, and the wall thickness is relatively small. It is a large thin-walled plastic part.
(2) There are many ribs on the bumper, and the melt flow resistance during injection molding is large.
(3) The appearance of the car bumper must be smooth.
Automobile bumper mold analysis
(1) Mould structure analysis
The automobile mold has a large number of holes and is designed with exhaust grooves and avoidance grooves. This can extend the life of the mold and avoid flashing. Die steel is P20, 718 or others. Chennoo uses various advanced milling equipment to improve the surface finish of automotive molds.
(2) Gate system analysis
The integrated hot runner system design can avoid material waste and reduce maintenance costs. At the same time, SVG technology is also used to control the opening and closing of the outlet of the injection molding machine by driving the cylinder. The melt flow in the automobile mold is stable, the pressure is uniform, and the shrinkage rate of the bumper is consistent, thereby improving the dimensional accuracy. It not only achieves the ideal effect of the smooth surface of the automobile bumper but also shortens the molding cycle and improves the productivity of the bumper.
(3) Analysis of temperature control system
The automotive mold temperature control system determines the molding cycle of the mold and the quality of the final product. The length of the cooling water channel should not be too different to ensure that the temperature of each part of the bumper drops evenly during the cooling and solidification stage.
(4) Analysis of demoulding system
For automobile bumper molds, demolding must be smooth and safe. Due to the small contact area, it is easy to cause the ejector pin to collide with the cavity surface of the mold. Therefore, the bumper mold should be designed to be as straight as possible and use less ejector pins.
SHINE MOULD has a professional team and advanced equipment, providing OEM production services and customized automotive molds and Flower Pot Mould services. If you have any needs, please contact us to get the best auto mold price.
