JPH09286042A - Molding processing of interior trim for car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the leak of a resin from a graining part at a time of the injection molding of a resin of a base material by certainly sealing the graining part formed to the overlapped part of the end edge of a fabric skin and the end edge of a resin molded skin. SOLUTION: A graining blade 12 is raised in such a state that the end edge 3a of a resin molded skin 3 is superposed on the end edge 2a of the fabric skin 2 of an interior trim to mold a graining part. In this molding, the graining holding parts 17 pressing the end edge 3a of the resin molded skin 3 are provided to the recessed part 14 of an upper mold 13 at a constant pitch with respect to the graining part and the end edge 3a of the resin molded skin 3 is forcibly pressed to the end edge 2a of the fabric skin 2 by the graining holding parts 17 to inject a resin material of a base material into a resin inflow space 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming and processing automobile interior parts.

[0002]

2. Description of the Related Art As shown in FIG. 5, in an automobile interior part such as a door trim, a door trim 20 has two kinds of skins, a fabric skin 2 and a slush-molded resin-molded skin 3, on an upper portion of the door trim 20. In order to improve the appearance of these two types of seams, there is an interior product in which a wood grain portion 4 is formed.

The conventional molding method for such interior parts is
As shown in FIG. 6, a lower die 10 provided with a wood grain blade 12 for forming a wood grain in a cavity portion 11 so as to be retractable, a recess 14 corresponding to the wood grain blade 12 of the lower die 10, and the cavity portion. Upper mold 13 provided with a core portion 15 that faces the resin member 11 and forms a resin inflow space 16
It is molded by and.

As shown in FIG. 6, the forming method using the lower mold 10 and the upper mold 13 is such that the fabric skin 2 and the resin-molded skin 3 are provided on the cavity portion 11 of the lower mold 10 at the edges of the fabric skin 2. Edge 3 of resin molding skin 3 on 2a
a and stack and set the wood grain blade 12 to the cavity 1
1, the edge 2a of the fabric skin 2 is pushed up to the inside of the edge 3a of the resin-molded skin 3, and the upper die 13 descends to match the lower die 10 and become the base material 1 of the interior product in the resin inflow space 16. A resin (urethane) material is injected and molded.

[0005]

In the conventional molding method described above, the regular molding of the wood grain portion 4 is performed by the edge 2a of the fabric skin 2 and the edge of the resin molded skin 3 as shown in FIG. 7 (A). 3a is molded in a state of being surrounded by the base material 1 in a state of being superposed and contacted with each other. In some cases, the edge 3a of the slush-molded resin-molded outer skin 3 is formed in the base material 1 by the elastic force. Sometimes it is not pressed down,
As shown in FIG. 7 (B), a gap is formed between the edge 2a of the fabric skin 2 and the edge 3a of the resin-molded skin 3 which are raised by the wood grain blade 12, resulting in poor sealing. There was a problem that the resin leakage of No. 1 occurred, resulting in defective molding of the wood grain part 4.

An object of the present invention is to solve the above-mentioned conventional problems.
Automotive interior parts that ensure the sealing of the wood grain part formed in the overlapping part of the edge of the fabric skin and the edge of the resin molding skin and prevent resin leakage of the base material from the wood grain part during resin injection molding of the base material It is to provide a molding processing method.

[0007]

DISCLOSURE OF THE INVENTION To achieve the above object, the present invention provides a lower mold having a wood grain blade capable of appearing and retracting in a cavity for wood grain molding, and a lower grain wood grain blade. The cavity of the lower mold is obtained by stacking the edge of the resin molding skin on the edge of the fabric skin by the corresponding recess and the upper mold provided with the core portion that faces the cavity and forms the resin inflow space. In a molding process method for an interior product, in which a resin material serving as a base material of the interior product is injected into the resin inflow space in a state in which the upper die is aligned with the lower die and a wood grain blade is projected from the cavity portion, Providing wood grain holding parts for pressing the edge of the resin-molded skin in the recess of the upper mold at a constant pitch with respect to the wood grain part, the edge of the resin-molded skin is on the edge side of the fabric skin with this wood grain holding part. It is characterized in that the injection flows of the resin material in the resin inflow space in the state in which the pressing control manner.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an interior product molded by the method of the present invention, 2 is a fabric skin, 3 is a resin molded skin 3, 4 is a wood grain portion. B is a wood grain presser holding part to be described later, and B is a wood grain presser blade acting part between the pitches of the wood grain presser holding part a.

As a basic structure of the molding die, as shown in FIG. 2, a lower die 10 having a wood grain blade 12 for forming a wood grain in a cavity 11 so as to be retractable,
A concave portion 14 corresponding to the wood cutting blade 12 of the lower mold 10,
By the cavity 11 and the upper die 13 provided with the core portion 15 that forms the resin inflow space 16 facing the cavity portion 11, the edge 3a of the resin molding skin 3 is overlapped on the edge 2a of the fabric skin 2, and It is set in the cavity portion 11 of the mold 10, and the upper mold 13 is aligned with the lower mold 10 and the wood grain blade 1
As in the conventional method, the resin material to be the base material 1 of the interior component is injected into the resin inflow space 16 in a state in which 2 projects from the cavity 11.

According to the present invention, as shown also in FIG. 4, wood grain holding portions 17 for pressing the edge 3a of the resin-molded skin 3 are provided in the concave portion 14 of the upper mold 13 at a constant pitch with respect to the wood grain portion 4. With this wood grain holding portion 17, the resin molded skin 3
The resin material of the base material 1 is injected and flowed into the resin inflow space 16 while the edge 3a of the above is forcibly pressed to the edge 2a side of the fabric skin 2.

According to the present invention, when the upper die 13 is lowered and aligned with the lower die 10, the wood grain holding section 17 projects the end edge 3a of the resin-molded skin 3 from the cavity portion 11 of the lower die 10. The edge portion 2a of the fabric skin 2 raised at 12 is forcibly pressed, and the overlapping portion between the edge 2a of the fabric skin 2 and the edge 3a of the resin-molded skin 3 is reliably sealed without gaps.

By injecting the resin material of the base material 1 into the resin inflow space 16 in such a state, the base material from the overlapping portion of the edge 2a of the fabric skin 2 and the edge 3a of the resin molded skin 3 The resin leakage of 1 is surely prevented.

As shown in FIG. 3 (A), the wood grain part 4 of the fabric skin 2 and the resin molded skin 3 of the interior part molded by the present invention is provided by the wood grain holding part 17 in the wood grain presser holding part a shown in FIG. Edge 3 of resin molding skin 3
Since the resin material does not flow into the bent portion of a, the layer of the base material 1 is not formed, but this is a part of the constant pitch where the wood grain holding portions 17 are formed, and the wood grain holding portion 17 has a constant pitch. Since the wood grain holding portion 17 is not formed in the concave portion 14 of the upper die 13 in the wood grain blade working portion b between the pitches, the resin inflow space 16 is formed as in the conventional case, as shown in FIG. 3 (B). Edge 3a of resin molding skin 3
The resin material flows into the bent portion and is surrounded by the base material 1.

Therefore, the wood grain portion 4 is formed in a regular form in which the resin leakage failure of the base material 1 does not occur.

In the above-mentioned embodiment, the example of the interior trim is explained with the door trim. However, two different kinds of skins other than the door trim are applied to the resin interior trim which is continued with wood grain.

[0016]

As described above, according to the present invention, when the edge of the resin-molded skin is overlaid on the edge of the fabric skin of the interior part and the wood grain blade is raised to mold the wood grain portion, the recess is formed in the upper mold. Providing a wood grain holding portion for pressing the edge of the resin molded skin at a constant pitch with respect to the wood grain portion,
Since the edge of the resin-molded skin is forcibly pressed to the edge of the fabric skin by this wood grain holding part, the resin material of the base material is injected into the resin inflow space. The overlapped portion with the edge of the skin is surely sealed without gaps, the resin leakage of the base material from the wood grain portion is surely prevented, and it is possible to always form a highly designed interior product.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an interior product molded by the method of the present invention.

FIG. 2 is a cross-sectional view of essential parts showing a method of the present invention for molding a C part in FIG.

FIG. 3 is a sectional view (A) of a portion of FIG. 1 and a sectional view of a portion (B) of FIG. 1 molded by the method of the present invention.

FIG. 4 is a perspective view of the upper mold of the method of the present invention and its main parts.

FIG. 5 is a perspective view of an interior product formed by a conventional method.

FIG. 6 is a sectional view showing a conventional method.

FIG. 7 is a cross-sectional view (A) showing a normal form of a wood grain portion formed by a conventional method and a cross-sectional view (B) showing a defective form.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Fabric skin 3 Resin molding skin 4 Wood grain part 10 Lower mold 11 Cavity part 12 Wood grain blade 13 Upper mold 14 Recessed part 15 Core part 16 Resin inflow space 17 Wood grain holding part

Claims (1)

[Claims] 1. A lower die in which a wood graining blade for forming a wood grain in a cavity portion is provided so as to be retractable, a concave portion corresponding to the wood graining blade of the lower die, and a resin inflow space facing the cavity portion. The upper mold provided with the core portion to be formed overlaps the edge of the resin-molded skin on the edge of the fabric skin and sets it in the cavity of the lower mold, and aligns the upper mold with the lower mold to make a wood grain blade. In a method of molding an interior product in which a resin material serving as a base material of an interior product is injected into the resin inflow space in a state of protruding from a cavity portion, a wood grain holding for pressing an edge of the resin-molded skin in the recess of the upper mold The parts are provided at a constant pitch with respect to the wood grain part, and the resin material is introduced into the resin inflow space by forcibly pressing the edge of the resin molded skin to the edge side of the fabric skin with this wood grain holding part. A method for forming and processing automobile interior parts, characterized by injecting and injecting.