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Injection mold for automobile thin-wall cylindrical part and ejection method

A technology for injection molds and cylindrical parts, which is used in the fields of injection molds and ejection of thin-walled cylindrical parts of automobiles, can solve problems such as product deformation and fracture, and achieve the effect of avoiding deformation.

Pending Publication Date: 2022-03-04
广东东亚电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an injection mold for thin-walled cylindrical parts of automobiles, so as to solve the problem that the existing injection molds for making cylindrical parts are prone to product deformation and fracture

Method used

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  • Injection mold for automobile thin-wall cylindrical part and ejection method
  • Injection mold for automobile thin-wall cylindrical part and ejection method
  • Injection mold for automobile thin-wall cylindrical part and ejection method

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Embodiment Construction

[0033] In order to set forth the present invention better, below with reference to appended Figure 1-3 The present invention is further described in detail.

[0034] As a specific embodiment of the present invention, such as figure 2 Shown, a kind of injection mold of automobile thin-walled cylindrical part, comprises:

[0035] The nozzle plate 1, the front template 2, the rear template 3 and the rear ejector plate 4 are arranged in sequence;

[0036] The nozzle plate 1 is provided with a core-pulling rod 5, and the core-pulling rod 5 is used to form the inner wall of the thin-walled cylindrical part of the automobile;

[0037] The front template 2 is provided with a front mold core 21, and the front mold core is provided with a runner groove (not shown in the figure);

[0038] The rear template 3 is provided with a rear mold core 31 and a slide block 8, the slide block 8 is provided with a semicircular arc groove 82, and the two slide blocks 8 are arranged opposite to th...

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Abstract

The invention relates to the technical field of mold forming, and discloses an injection mold and an ejection method for an automobile thin-wall cylindrical part. The injection mold comprises a stripper plate, a front mold plate, a rear mold plate, a sliding block and a rear ejector plate which are sequentially arranged; a core-pulling rod is arranged on the water gap plate and is used for forming the inner wall of the automobile thin-wall cylindrical part; an ejector rod is arranged on the rear ejector plate; a stroke control device is further arranged between the front mold plate and the rear mold plate. According to the injection mold for the automobile thin-wall cylindrical part, the core pulling rod is arranged on the stripper plate, the front mold plate and the rear mold plate are not opened firstly through the stroke control device, after the core pulling rod is completely pulled out of the automobile thin-wall cylindrical part, the sliding blocks on the two sides of the forming cavity are moved away, and finally the automobile thin-wall cylindrical part is ejected out through the ejector rod; and the coating force of the automobile thin-wall cylindrical part on the injection mold is gradually weakened, and the automobile thin-wall cylindrical part is prevented from being deformed and fractured during demolding.

Description

technical field [0001] The invention relates to the technical field of mold forming, in particular to an injection mold and an ejection method for a thin-walled cylindrical part of an automobile. Background technique [0002] There are a large number of injection molded parts in the car. Due to the increasing requirements of the automotive industry for the lightweight of cars, most of the current car parts need to be made into thin-walled products. E.g figure 1 The automobile thin-walled cylindrical part 01 shown in , has a hollow cylindrical shape as a whole, and the wall thickness is only about 0.35mm. When the existing injection mold produces such a cylindrical part, after the injection mold is opened, the ejector mechanism directly ejects the cylindrical part, because the cylindrical part has a large covering force on the mold, and the thickness of the cylindrical part itself It is extremely thin, so it is easy to deform or even break when ejecting, which makes the qua...

Claims

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Application Information

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IPC IPC(8): B29C45/33B29C45/40
CPCB29C45/332B29C45/4005B29C45/0025
Inventor 罗金桥谭峰陈垚
Owner 广东东亚电器有限公司
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