Apparatus and method for manufacturing crash pad

Patent metadata

Field	Value
Publication number	US-9889584-B2
Application number	US-201615349190-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	May 25, 2012
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

An apparatus for manufacturing a crash pad having a foam layer by injecting and foam-molding a foam liquid between a base and a skin may include a first mold and a second mold which mold the base by injecting molten resin into a base forming space formed in a mold-closed state and a vacuum mold for vacuum-molding the skin, in which when the vacuum mold to which the formed skin may be attached may be mold-closed with the first mold, a foam space may be formed between the skin and the base of the first mold, and an injection channel for injecting the molten resin into the base forming space and a foam liquid injection channel for injecting the foam liquid into the foam space may be provided in the first mold, such that the first mold may be used as a foam mold, together with the vacuum mold.

First claim

What is claimed is:

1. A method for manufacturing a crash pad having a foam layer by injecting and foam-molding a foam liquid between a base and a skin, the method including:
injecting molten resin into a base forming space formed in a mold-closed state between a first mold and a second mold through an injection channel formed in the first mold, thereby forming the base having a through-hole for passing the foam liquid therethrough and at the same time, vacuum-molding the skin in a vacuum mold;
separating the second mold from the first mold and then mold-closing the vacuum mold to which the vacuum-molded skin is attached with the first mold in which the base is formed; and
injecting the foam liquid into a foam space between the base of the first mold and the skin of the vacuum mold through a foam liquid injection channel formed in the first mold, thereby foam-molding the foam layer,
wherein the through-hole is formed to pass through the base by a pin portion installed in a cavity inner side of the second mold in the forming of the base.

2. The method of claim 1 , wherein the foam liquid supplied through the foam liquid injection channel is injected into the foam space through the through-hole of the base in the foam-molding of the foam layer.

3. The method of claim 1 , wherein a slide mold of a sealing device is moved in the first mold, such that the slide mold seals an edge end portion of the base forming space in the injection-molding of the base and the slide mold seals an edge end portion of the foam space in the foam-molding of the foam layer.

4. The method of claim 3 , wherein during movement of the slide mold for sealing the foam space, the slide mold urges an edge portion of the skin attached to the vacuum mold to closely contact an end portion of the base, thereby closing the foam space by the edge portion of the skin.

5. The method of claim 1 , wherein a slide mold of the sealing device is moved in the first mold to seal the edge end portion of the base forming space in the injection-molding of the base, and
in the foam-molding of the foam layer, a slide mold of a skin adhering device is moved in the first mold to bend an edge portion of the skin toward the base and inject the foam liquid, such that an edge portion of the skin is adhered to an end portion of the base by the foam liquid leaked through a gap between the edge portion of the skin and the end portion of the base.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kong Byung Seok

Classifications

• B29C44/58 Primary

  Moulds · CPC title

• B29C44/086

  and feeding more material into the enlarged cavity · CPC title

• B29K2105/04

  cellular or porous · CPC title

• B29C45/14

  incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)} · CPC title

• B29C51/10

  Forming by pressure difference, e.g. vacuum · CPC title