Production process of automobile bumper

Abstract

The invention discloses a production process of an automobile bumper. The production process comprises the following steps of putting prepared raw materials into a mixing mill and mixing; after the raw materials are completely mixed, putting the raw materials into a charging barrel and carrying out heat preservation; putting the dried raw materials into an injection molding machine and carrying out injection molding; carrying out trimming, shaping and checking on an injection-molded product; washing and drying the trimmed product; cooling the dried product; carrying out flame baking on the surface of the cooled product; carrying out surface electrostatic treatment on the baked product; spraying paint on the dust-removed product; baking and curing the product sprayed with the paint; coolingthe baked product; and checking a finished product. With the adoption of the process disclosed by the invention, the automobile bumper has high rigidity and strong toughness and is not easy to break;an injection molding part has high firm strength and strong impact resistance; the types of defects of the injection molding part can be controlled to the greatest extent; the adsorption performanceof the paint is improved and the paint is not easy to discolor and fall off; the bumper has high precision and the process is simple and convenient; and manual participation is reduced and the cost isreduced.

Description

technical field [0001] The invention relates to the technical field of bumpers, in particular to an automobile bumper production process. Background technique [0002] The front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but more importantly, are safety devices that absorb and ease external impact, protect the body and protect the occupants. Among them, the outer plate and buffer material are made of plastic, and the beam is stamped with a cold-rolled sheet with a thickness of about 1.5 mm to form a U-shaped groove; the outer plate and buffer material are attached to the beam, and the beam is connected with the longitudinal beam of the frame by screws. disassembled. The plastics used in this plastic bumper are generally made of polyester and polypropylene, and are made by injection molding. For example, the bumper of the Peugeot 405 sedan is made of polyester materials and made by reaction injection molding. The bumpers o...

AI Technical Summary

Problems solved by technology

In the prior art, the material of the bumper has poor strength, poor toughness, and is easy to break, and the main problems in the previous process are: poor product precision; too many working hours and processes, wasting manpower, and increasing production costs