Automobile energy-absorbing box and secondary forming process and device thereof

A technology of secondary molding and energy-absorbing box, which is applied to other household appliances, bumpers, household components, etc., can solve the problems of single-time energy-absorbing effect, inability to absorb impact force, affecting production efficiency, etc., so as to improve production efficiency and improve production efficiency. The effect of production stability and reduction of cutting difficulty

Active Publication Date: 2021-02-02
中机精密成形产业技术研究院(安徽)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Automobile energy-absorbing box and secondary forming process and device thereof
  • Automobile energy-absorbing box and secondary forming process and device thereof
  • Automobile energy-absorbing box and secondary forming process and device thereof

Examples

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Effect test

Embodiment 1

[0051] Such as figure 1 As shown, the present invention provides an automobile energy-absorbing box, which sequentially includes a first-level energy-absorbing structure and a second-level energy-absorbing structure from the outside to the inside, wherein the first energy-absorbing metal foam structure includes an elastic recovery force an elastic body 3-1, and an elastic material 3-4 disposed inside the elastic body 3-1;

[0052] The second energy-absorbing elastic structure includes a soft plastic ball 3-2, and a carbon fiber prepreg 3-3 fully wrapped on the outer surface of the soft plastic ball 3-2, and the soft plastic ball 3-2 and the carbon fiber prepreg 3-3 together To form a carbon fiber liner, the elastic material 3-4 completely surrounds the outer surface of the carbon fiber prepreg 3-3.

[0053] The automobile energy-absorbing box provided in this embodiment includes three parts: a metal shell, an elastic material and a carbon fiber liner. Performance thermoplast...

Embodiment 2

[0056] In addition if figure 2 As shown, the present invention also provides a secondary molding process for an automobile crash box, comprising the following steps:

[0057] Step 100: Divide the automobile energy-absorbing box into two parts from the inside to the outside, which are the first energy-absorbing metal foam structure and the second energy-absorbing elastic structure, wherein the second energy-absorbing elastic structure is specifically a carbon fiber liner, The first energy-absorbing metal foam structure includes a metal elastic shell, and an elastic material arranged in the metal elastic shell and wrapped outside the carbon fiber liner;

[0058] Step 200: Divide the carbon fiber liner into an outer carbon fiber prepreg and an inner foam support ball, place the outer carbon fiber prepreg in a blow mold, and make an inner hair inside the outer carbon fiber prepreg using a molding blowing process Foam support ball, extrusion blow molding mold combined to generate...

Embodiment 3

[0074] Such as image 3 As shown, the present invention also provides a secondary molding device for automobile crash boxes, including a carbon fiber delivery unit 1, a primary blow molding unit 2 and a secondary casting molding unit 3, the carbon fiber delivery unit 1 and the primary blow molding unit There is a carbon fiber cutting unit 4 between the 2. The carbon fiber cutting unit 4 cuts the outer carbon fiber prepreg according to the fixed interval time and interval length and generates an energy-absorbing ball prefabricated body with the same surface area as half a ball of the carbon fiber inner tank. The carbon fiber delivery unit 1 Continuously transport the energy-absorbing ball prefabricated body to the primary blow molding unit 2 and form a carbon fiber inner container together with the plastic parison.

[0075] After the carbon fiber liner is cured at high temperature, it is positioned and placed in the secondary pouring molding unit 3. The secondary pouring moldin...

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Abstract

The invention discloses an automobile energy-absorbing box and a secondary forming process and device thereof. The automobile energy-absorbing box sequentially comprises a first energy-absorbing metalfoaming structure and a second energy-absorbing elastic structure from outside to inside, wherein the second energy-absorbing elastic structure is composed of a plastic ball and a carbon fiber wrapping layer wrapping the plastic ball; firstly, the second energy-absorbing elastic structure is divided into an elastic material and a carbon fiber liner; an inner foamed support ball is manufactured inan outer carbon fiber prepreg through a mold pressing blowing process to generate the carbon fiber liner; the carbon fiber liner is positioned and placed into a casting mold, the whole carbon fiber ball is fully wrapped with the elastic material through a casting process, and the second energy-absorbing elastic structure is obtained through secondary forming under the fixed heating and pressurizing conditions; and the second energy-absorbing elastic structure is loaded in the first energy-absorbing metal foaming structure to obtain the automobile energy-absorbing box. The automobile energy-absorbing box is large in energy absorption force, the production efficiency and the production stability of the whole carbon fiber liner are improved, and the cutting difficulty of the carbon fiber liner is reduced.

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...

Claims

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Application Information

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IPC IPC(8): B29C69/00B60R19/26B29L31/30
CPCB29C69/001B60R19/26B29L2031/30
Inventor 郭平安孙奋丽边翊金康丁金根王小刚刘争辉
Owner 中机精密成形产业技术研究院(安徽)股份有限公司
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