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Plastics suction mould

A technology of blister molds and blister molds, which is applied in the field of blister molds, can solve the problems of affecting the production quality of films, the sharp corners of films are easy to break, and increase production costs, so as to reduce the depth of film undercuts and save raw materials , The effect of reducing the scrap rate

Active Publication Date: 2010-08-18
SHANGHAI TONGLING AUTOMOTIVE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the mold is forced out, the sharp corners of the film are easy to break
When mounting, the rupture of the film will also cause the film to fail to cover the plastic surface, and the plastic will be injected into the film surface
Seriously affect the production quality of the film. At present, when producing the blister film for the press frame before the improvement, the reject rate reaches about 80%, the production success rate is low, and the production cost is greatly increased.

Method used

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  • Plastics suction mould
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 4 to Figure 9 Shown:

[0034] The plastic-absorbing mold includes a mold frame 7 on which the pressure frame 3 is arranged, and the mold frame 7 is provided with an air cavity (not shown in the figure).

[0035] The press frame 3 includes a press frame base 4 and a plastic-absorbing part frame 5, and the shape of the plastic-absorbing part frame 5 is the same as that of the plastic-absorbing part to be manufactured. The plastic-absorbing part frame 5 is arranged on the upper end of the pressure frame base 4 . The molded frame 5 of the plastic-absorbing part extends outward along the base body 4 of the press frame, that is, the mold frame 5 of the plastic-absorbing part is larger than the base body 4 of the press frame.

[0036] There is a first sharp corner 51 on the plastic part frame 5, and the first sharp corner 51 is an arc angle between the two sides (52, 53) of the bottom surface of the plastic part frame 5, and the two sides (52, 53) pass throug...

Embodiment 2

[0044] Such as Figure 10 As shown, on the basis of Embodiment 1, the boss 6 has an inclined surface 61 , and the inclined surface 61 is located directly below the first sharp corner 51 . The distance between the junction of the inclined surface 61 and the pressure frame base 4 and the plastic part frame 5 is smaller than the distance between the outermost end of the inclined surface and the plastic part frame 5 . The outermost end of the inclined surface refers to the farthest end of the inclined surface 61 extending outward from the pressure frame base 4 .

[0045] In the blister mold of the present invention, when the film is stretched to a height of 5.2mm and the first sharp angle is 48°, the undercut depth of the film is only 0.5mm, and it is easier to remove the mold after blistering, and the first sharp corner will not be scratched. Break the plastic film, improve the yield.

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PUM

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Abstract

The invention discloses a plastics suction mould, comprising press frames, wherein the press frames comprise press frame substrates and plastics suction part fixture; and the plastics suction part fixture is arranged at the upper end of the press frame substrates and is provided with first acute angles. The invention is characterized in that convex plates which extend outwards along the press frame substrates are arranged on the press frame substrates, positioned below the first acute angles and distant from the plastics suction part fixture. The plastics suction mould can reduce the under-cut depth and drawing of the thin films, thereby improving the mould yield.

Description

technical field [0001] The invention relates to a blister mold. Background technique [0002] Automotive interior parts are generally in the form of decorative films mounted on the surface of injection molded parts. Before the film is mounted on the surface of the injection molded part, it needs to be formed by blister, and then punched after forming. It is best to attach the die-cut film to the surface of the injection molded part. The shape of the interior trim varies depending on where it is installed. One of the trim pieces is a shape with an included angle. Therefore, the film that requires its surface mount must also have an included angle. Such as figure 1 Shown is a schematic view of the final shape of a film, the film 1 being provided with sharp corners 11 . [0003] Blister molding molds, such as figure 2 , image 3 As shown, the mold frame 2 is included, and the mold frame 2 is provided with a pressure frame 21. The mold frame 2 has an air cavity (not show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/36
Inventor 江德生康飞斌
Owner SHANGHAI TONGLING AUTOMOTIVE TECH INC
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