A side wall forming mold and a side wall forming process

A technology of forming mold and forming process, applied in the field of car body, can solve problems such as aluminum plate cracking, and achieve the effect of avoiding cracking

Active Publication Date: 2019-06-04
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a side wall forming mold and a side wall forming process to solve the deficiencies in the prior art, and it can avoid the problem of cracking when the integrally formed aluminum plate side wall is formed

Method used

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  • A side wall forming mold and a side wall forming process
  • A side wall forming mold and a side wall forming process
  • A side wall forming mold and a side wall forming process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0048] The embodiment of the present invention provides a side wall forming die. The side wall forming die includes an upper die body 1 , a lower die base 2 , a punch 3 arranged on the lower die base 2 , and a compensation tool movably arranged on the upper die body 1 . The concave die 4, the inner crimping ring 5 which is movable inside the punch 3 and matched with the pressing surface of the compensating die 4, and the outer crimping ring 6 which is movable and arranged outside the punch 3; the inner crimping The ring 5 is provided with an inner secondary ejector pin 7, and the outer edge holder ring 6 is provided with an outer secondary ejector pin 8; wherein: the length of the inner secondary ejector pin 7 is less than the length of the outer secondary ejector pin 8, and the die In the closed state, the lower end face of the inner secondary ejector rod 7 is higher than the lower end face of the outer secondary ejector rod 8 by Δh; the upper mold body 1 is also provided with...

Embodiment 2

[0055] The present embodiment provides a side wall forming process, wherein: the above side wall forming die is used to carry out side wall drawing forming. The inner edge holder 5 has only one limit position. When it is specifically implemented, the side wall forming process is as follows: Figure 8 shown, including the following steps:

[0056] Step S10: First, the upper die body 1 and the punch 3 are in the mold-opening state; then, the machine tool ejector 9 goes up, and the machine tool ejector 9 first contacts the outer secondary ejector bar 8 and lifts 6, and then the machine tool ejector 9 goes up again. Contact the inner secondary ejector rod 7 and lift up the inner edge holder 5, so that the inner side holder 5 and the outer side holder 6 move to the same height, and the upper surfaces of the inner side holder 5 and the outer side holder 6 are formed at this time. Smooth and smooth lower pressing surface, the lower pressing surface is higher than punch 3, such as ...

Embodiment 3

[0067] The present embodiment provides a side wall forming process, wherein: using the above side wall forming die to carry out side wall drawing forming, the difference between this embodiment and Embodiment 2 is that in this embodiment, the inner edge holder 5 At the same time, the lower mold nitrogen gas spring and the lower mold base 2 are used to limit the position respectively. At this time, it is required to set the lower mold nitrogen gas spring to provide driving force and pressure source in the lower mold; set the stroke and force of the lower mold nitrogen gas spring, and the lower mold nitrogen gas spring The force can be used as the pressure source of the inner edge holder 5 to limit the inner edge holder 5 during the mold clamping process, and the stroke of the lower die nitrogen gas spring can be used as the elastic stroke of the inner edge holder 5, while the lower die seat 2 pairs of inner blank holder 5 provide rigid limit. During the clamping process, the co...

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Abstract

The invention relates to the technical field of car bodies, in particular to a side-wall forming die and a side-wall forming process. The side-wall forming die comprises an upper die body, a lower dieseat, a convex die, a compensation concave die, an inner blank holder and an outer blank holder, wherein the convex die is arranged on the lower die seat; the compensation concave die is movably arranged on the upper die body; the inner blank holder is movably arranged inside the convex die and matched with the pressing surface of the compensation concave die; the outer blank holder is movably arranged on the outer side of the convex die; inner secondary ejector rods are arranged on the inner blank holder; outer secondary ejector rods are arranged on the outer blank holder; the length of eachinner secondary ejector rod is less than that of each outer secondary ejector rod; and in the die closing state, the lower end surface of the inner secondary ejector rod is delta h higher than that of the outer secondary ejector rod. By adoption of the side-wall forming die and the side-wall forming process provided by the invention, the drawing depth of a side-wall door opening can be reduced, and the problem that an integrally-formed aluminum plate cracks in the side-wall forming course can be avoided.

Description

technical field [0001] The invention belongs to the technical field of vehicle body, in particular to a side wall forming die and a side wall forming process. Background technique [0002] With the vigorous development of the vehicle industry, the exterior shape of the vehicle has also changed with the improvement of consumers' aesthetic requirements. The exterior shape of the vehicle has more and more protruding ridgelines, smaller ridgeline R angles, and more complex surface changes. Wait. At the same time, with the development of lightweight vehicles and new energy vehicles, major OEMs are studying all-aluminum bodies or increasing the proportion of aluminum alloys used in the body. Such new requirements for vehicle products as above make the manufacturability of outer cover products such as side panels deteriorate, and the manufacturing difficulty becomes more and more difficult, and even the parts are difficult to form. For example, the upper profile of the side panel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/10B21D22/22B21D53/88
CPCB21D22/22B21D37/10B21D53/88
Inventor 黄永生桂方亮张稳定王肖英韩永志刘程崔礼春
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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