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Blister mold

A blister mold and demolding device technology, applied in the field of blister molds, can solve problems such as tearing, lowering the qualified rate of products, scraps of diaphragms, etc., so as to avoid stretching deformation and improve the qualified rate of products.

Active Publication Date: 2013-04-17
SHANGHAI TONGLING AUTOMOTIVE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the undercut, the diaphragm is easily deformed or broken at the position of the undercut, resulting in the production of the diaphragm as a waste product and reducing the qualified rate of the product

Method used

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Examples

Experimental program
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Embodiment Construction

[0022] The present invention is described in detail below in conjunction with accompanying drawing:

[0023] Such as figure 1 , figure 2 Shown: Blister mold including base 4. The base 4 is provided with two rows of cores 42, three in each row. The core 42 protrudes beyond the surface 43 of the base 4 . The core 42 has an undercut 421 . The base 4 is provided with a groove 41 . The groove 41 is located between the two rows of cores 42 . More than two first receiving grooves 44 are disposed in the groove 41 .

[0024] It also includes a push block 1, a compression spring 2 and a guide device 3. The push block 1 is movably disposed in the groove 41 of the base 4 . The push block 1 is provided with a guide groove 13 . The push block 1 is provided with more than two second receiving grooves 14 . Each second receiving slot 14 is opposite to one of the first receiving slots 44 . One end of the compression spring 2 is located in the first receiving groove 44 , and the othe...

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PUM

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Abstract

The invention discloses a blister mold, comprising a base, wherein a cavity or a mold core protruding out of the surface of the base is arranged at the surface of the base. The blister mold is characterized by also comprising a demolding device, wherein the demolding device is movably arranged on the base, protrudes out of the surface of the base, and can move up and down in a direction vertical to the surface of the base so as to protrude out of or be lower than the surface of the base. By adopting the blister mold disclosed by the invention, the demolding device is pressed to move to not protrude out of the surface of the base in a blister molding process, so that the blistering is not influenced, and a membrane does not deform; the demolding device can automatically reset to protrude out of the surface of the base after the membrane is molded in a blistering manner and vacuum suction disappears; and the demolding device can push the membrane in a moving process, so that the part, close to a back-off part, of the membrane is firstly demolded. Therefore, the blister mold facilitates demolding of the entire membrane. The blister mold can prevent the membrane from deforming and being broken in a stretching manner at the back-off part in the demolding process, and the percent of pass of the membrane is improved.

Description

technical field [0001] The invention relates to a blister mold. Background technique [0002] During the production process of automotive interior parts, it is often necessary to attach a layer of film to its surface. The film needs to be blistered before being attached to the automotive interior. The basic process of blister forming is as follows: heat the plate or sheet, fasten and fix the heated plate or sheet on the blister mold, start the vacuum pump to vacuum the plastic forming, cool and shape, loosen the clamping frame and take off the formed product , Trim the excess. Blister mold includes moving mold and base. A number of cores or cavities are set on the base, and the diaphragm is vacuum formed on the cores or cavities in the mold-closed state. [0003] Since some automotive interior parts have sharp corners, etc., the film that needs to be mounted on it must also have such sharp corners. And below the parting line at the sharp corner is often a negative angle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/36B29C51/44
Inventor 江德生马勇
Owner SHANGHAI TONGLING AUTOMOTIVE TECH INC
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