An automobile energy-absorbing box and its secondary molding process and molding device

Abstract

The invention discloses an automobile energy-absorbing box and its secondary molding process and molding device, which sequentially include a first energy-absorbing metal foam structure and a second energy-absorbing elastic structure from outside to inside, wherein the second energy-absorbing elastic structure consists of Composed of plastic balls and carbon fiber wrappings wrapped outside the plastic balls, the second energy-absorbing elastic structure is divided into elastic materials and carbon fiber inner tanks; the inner part of the outer carbon fiber prepreg is made of inner foam support balls by molding and blowing process Generate a carbon fiber liner; position the carbon fiber liner into the casting mold, and use the casting process to fully wrap the elastic material on the entire carbon fiber sphere, and obtain the second energy-absorbing elastic structure by secondary molding under fixed heating and pressure conditions; put the second The energy-absorbing elastic structure is put into the first energy-absorbing metal foam structure to obtain an automobile energy-absorbing box; the invention has a high degree of absorption, the production efficiency and production stability of the entire carbon fiber liner, and reduces the difficulty of cutting the carbon fiber liner.

Description

technical field [0001] The invention relates to the technical field of automobile energy-absorbing boxes, in particular to an automobile energy-absorbing box and its secondary forming process and forming device. Background technique [0002] The energy-absorbing box of the car is installed between the front anti-collision beam and the main beam. When the car collides, the crushing of the energy-absorbing box disperses the collision force to resist the front impact force, which plays a vital role in the safety performance of the car. effect. [0003] With the continuous development of automobile technology, the safety requirements of automobiles are getting higher and higher. Especially in the front collision, it is necessary to protect the components of the cabin and ensure the personal safety of the occupant cabin. The existing energy-absorbing Most of the boxes use elastic materials for single-time energy absorption, and the energy absorption effect is poor. In the produc...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an automobile energy-absorbing box and its secondary molding process and molding device, so as to solve the problem that the energy-absorbing box in the prior art can only achieve a single energy-absorbing effect and cannot effectively absorb the impact force. The protection performance is poor, and there are many post-grinding and cutting operations on the energy-absorbing box, which affects the technical problems of production efficiency

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