In the early days, the bumper was mainly made of metal. This was done to absorb and relieve the impact of the outside world and protect the front and rear of the car body. With the development of the automobile industry, people are pursuing integrated and lightweight design, and they have changed metal materials to plastic materials. In terms of anti-collision effects, the two are actually the same. The Bumper Mold of a general automobile is composed of three parts: an outer panel, cushioning material, and a beam. The outer plate and buffer material are made of plastic, and the cross beam is stamped with a cold-rolled sheet to form a U-shaped groove; the outer plate and buffer material are attached to the beam.

When a car crashes, the power is transmitted: the front bumper receives the impact force, and the front bumper distributes the force to the energy-absorbing boxes on both sides, and then transmits it to the left and right front side members, and then to other structures of the body. The rear receives the impact force, and the rear bumper transmits the impact force to the energy-absorbing boxes on both sides, then to the left and right rear longitudinal beams, and then to other structures of the body. Low-strength impact bumpers can cope with it, while high-strength impact bumpers play the role of force transmission and dispersion and buffering, and finally transfer to other structures of the body, and then rely on the strength of the body structure to resist.

Why are automobile manufacturers adopting plastic bumpers one after another?
1. Can reduce production costs. Automobile production has been molded. In addition to the use of high-strength materials for the body, many parts will use engineering plastics as much as possible. Front and rear bumpers of automobiles are typical representatives, and Auto Parts Mold may also use lightweight materials such as plastics. Plastic bumpers can not only save manufacturing costs but also have lower requirements on the industrial level and are easier to produce. Therefore, after the cost of building a car is controlled, the price of the final product in the hands of consumers will be more reasonable. 2. Plastic bumpers can ensure the safety of pedestrians as much as possible. We know that the main responsibility of bumpers is to protect pedestrians. Due to material reasons, plastic bumpers are more elastic than metal and have a better ability to absorb impact.