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Device for flexible storage of limiter

A limiter and flexible technology, applied in the field of mechanical stamping dies, can solve the problems of shortening life, increasing stamping production pressure, wasting kinetic energy, etc., and achieve the effects of prolonging life, reducing fatigue damage, and reducing pressure

Active Publication Date: 2014-12-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nitrogen gas spring of the flexible storage limiter does not work during the mold production process, but it is subjected to the greatest pressure during this process, the fatigue damage is the greatest, and the life span is reduced
At the same time, the downward force of the upper mold must be greater than the force of the nitrogen spring to complete the work content, that is, the press needs greater force to overcome the force of the nitrogen spring to complete the work content, and the requirements for the tonnage of the press are increased, resulting in waste of kinetic energy
The cost of nitrogen gas spring is high, and the reusability rate is low. Therefore, how to increase the service life of the flexible storage limiter of nitrogen gas spring and reduce the kinetic energy loss in the stamping production process has become an important research topic.
[0003] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: when the mold is in the production state, the compression amount of the existing nitrogen spring gradually increases with the decrease of the closed height of the mold, and is prone to fatigue damage , shorten its life, increase the pressure required for stamping production, and waste a lot of kinetic energy

Method used

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  • Device for flexible storage of limiter
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  • Device for flexible storage of limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 2a and Figure 2b Shown, its technical scheme is:

[0026] A flexible storage limiter device, including a nitrogen spring 2 arranged between an upper mold 1 and a lower mold 3, the rear end of the nitrogen spring 2 is fixedly connected to the lower mold 3, wherein the front end of the nitrogen spring 2 is sequentially arranged from the inside to the outside A mold support mechanism and a spring storage mechanism are provided.

[0027] The mold support mechanism is a support head 6 sleeved on the front end of the piston rod of the nitrogen gas spring 2 .

[0028] The spring storage mechanism is a spring storage cavity 7, and is arranged on the corresponding position of the upper mold 1 at the front end of the piston rod of the nitrogen gas spring 2.

[0029] The cross section of the support head 3 is circular.

[0030] The cross section of the spring receiving chamber 7 is circular, and its axis coincides with the axis of the nitrogen gas spring 2 . ...

Embodiment 2

[0036] Such as Figure 3a and Figure 3b Shown, its technical scheme is:

[0037] A flexible storage limiter device, including a nitrogen spring 2 arranged between an upper mold 1 and a lower mold 3, the rear end of the nitrogen spring 2 is fixedly connected to the upper mold 1, wherein the front end of the nitrogen spring 2 is sequentially arranged from the inside to the outside A mold support mechanism and a spring storage mechanism are provided.

[0038] The mold support mechanism is a support head 6 sleeved on the front end of the piston rod of the nitrogen gas spring 2 .

[0039] The spring storage mechanism is a spring storage cavity 7, and is arranged on the corresponding position of the lower mold 3 at the front end of the piston rod of the nitrogen gas spring 2.

[0040] The cross section of the support head 3 is circular.

[0041] The cross section of the spring receiving chamber 7 is circular, and its axis coincides with the axis of the nitrogen gas spring 2 . ...

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Abstract

The invention discloses a device for flexible storage of a limiter, belonging to the technical field of mechanical stamping dies. The technical scheme of the device is as follows: the device for flexible storage of the limiter comprises a nitrogen spring arranged between an upper die and a lower die, wherein the back end of the nitrogen spring is fixedly connected to the upper die or the lower die, and a die support mechanism and a spring storage mechanism are sequentially arranged at the front end of the nitrogen spring from inside to outside. The embodiment of the invention has the following beneficial effects: when the die is in a storage state, the die support mechanism is positioned between the nitrogen spring and the spring storage mechanism, and the nitrogen spring works normally and is in a compression state; when the die is in a production state, the die support mechanism is removed, and the piston rod of the nitrogen spring is stored in the spring storage mechanism in a natural state, thereby effectively reducing the fatigue damages of the nitrogen spring, prolonging the service life of the nitrogen spring, simultaneously greatly reducing the pressure required for stamping production and avoiding the waste of kinetic energy.

Description

technical field [0001] The invention relates to the technical field of mechanical stamping dies, in particular to a flexible storage limiter device. Background technique [0002] With the development of the automobile industry, my country's automobile industry has entered a stage of rapid development. The output of automobiles has increased, the pace of production has become faster and faster, and more and more stringent requirements have been put forward for the life of molds. The flexible storage limiter of the traditional mold is made of polyurethane material. In order to improve the service life and use safety, a steel ring is covered with the cylindrical polyurethane. With the increase of mold life, the traditional flexible storage limiter can no longer meet the requirements of use. At present, the automatic line mold uses nitrogen spring as the flexible storage limiter, which greatly improves the life of the flexible storage limiter; Figure 1a As shown, when the mold...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B15/02
CPCB21D37/10B21D55/00
Inventor 王娟付再兴
Owner CHERY AUTOMOBILE CO LTD