JPH0572417U - Foam molding die skin material fixing structure - Google Patents

Abstract

(57) [Summary] [Purpose] A new foam molding die that can easily and accurately set the skin material on the mold surface and also remove the skin material from the mold as the split mold rotates. Provide structure. [Structure] In a structure in which a skin material end portion A1 is fixed to a split mold 12 portion to be opened and closed, and the skin material is attached to a foam molding die main body 11, the opening and closing split mold portion has a difference in a direction opposite to an opening direction thereof. An elastic clip 20 for sandwiching a skin material having an insertion portion 22 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foam material fixing structure for a skin material.

[0002]

[Prior Art]

 For example, when molding interior parts such as vehicle instrument panels, set a skin material such as vinyl chloride on the mold surface of the foam molding die, and then inject the foam resin material inside the skin material to make it integral. Molding is done. In particular, in the case of a product having an undercut portion, a molding die having a split mold portion that can be opened and closed is used in order to facilitate demolding. At that time, as shown in FIG. 7, in order to accurately position the skin material on the mold surface, a dowel (convex portion) 53 is provided at a predetermined position of the split mold 52 in the foam molding die 51 and the skin is formed. A recess B is formed in the material A at a position corresponding to the dowel 53, the dowel 53 and the recess B are engaged with each other, and the skin material A is fixed to the mold surface for molding. Reference numeral P is a foamed resin molded product, 54 is an undercut portion, and 55 is a hinge portion that opens and closes the split mold 52.

When the molded product P is taken out after foam molding, the split mold 52 is rotated as shown by the arrow in FIG. However, in such a structure for fixing the skin material, since the recess B of the skin material A is hooked on the dowel 53 of the split mold 52, the recess B of the skin material A is removed before the rotation of the split mold 52. It had to be removed from 53, and the work was complicated.

[0004]

[Problems to be solved by the device]

 That is, the present invention provides a new foam molding die skin material fixing structure in which the skin material can be easily and accurately set on the mold surface, and the skin material can be removed from the mold as the split mold rotates. Is what you are trying to do.

[0005]

[Means for Solving the Problems]

 That is, in this invention, the end of the skin material is fixed to the split mold portion to be opened and closed, and the skin material is attached to the foam molding die body. The present invention relates to a foam material fixing structure for a skin material, which is characterized in that an elastic clip for sandwiching the skin material having an insertion portion is provided.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a foam molding die according to the skin material fixing structure of the present invention, FIG. 2 is a cross-sectional view of the foam molding die showing a demolding step, and FIG. 3 is a cross section of the foam molding die showing another state of the demolding step. FIG. 4, FIG. 4 is a perspective view showing an example of an elastic clip used in the skin material fixing structure of the present invention, FIG. 5 is an enlarged sectional view of a main part of a foam molding die showing the function of the present invention structure, and FIG. It is a principal part expanded sectional view of the foaming mold which shows another example.

1 to 3 show an embodiment of a skin material fixing structure of the present invention. In the figure, reference numeral 10 is a foaming mold, 11 is a foaming mold body, 12 is a split mold, 15 is a hinge part for opening and closing the split mold 12, 30 is a product projecting member, and 31 is a product projecting cylinder.

As shown in the drawing, the foam molding die 10 to which the structure of the present invention is used comprises a molding die main body 11 having a predetermined molded article cavity and a split die 12 which is openably and closably attached to the molding die 11. The skin material A is arranged on the mold surface and is integrally molded with the foamed resin material. Reference numeral 14 represents an undercut portion, Q represents a core material, and P represents a foam molded product.

An elastic clip 20 for sandwiching and fixing the skin material A is provided on the split mold 12 with its insertion portion 22 opposite to the opening direction of the split mold 12. As will be better understood from FIG. 4, the elastic clip 20 is made of an elastic member 21 such as a well-known leaf spring, and is attached to a fixed position of the skin of the split mold 12 by a set screw 26 or the like. Reference numeral 25 is a screw hole of the elastic clip 20. The number of the elastic clips 20 and the spring strength are appropriately set depending on the shape of the foam-molded product to be molded, the thickness of the skin material to be fixed, and the like.

As shown in FIG. 5, the skin material A can be easily attached by inserting the end portion A 1 thereof into the elastic clip 20, and the elastic clip 20 is attached to the molding die 10 by the spring pressure. Fixed.

If necessary, a core material Q is placed in a molding die cavity in which the skin material A is placed, and a lid die (not shown) is closed. Then, a foamed resin material is introduced and integrally foam-molded. It After the curing, the split mold 12 is rotated outward of the mold 10 to open the mold. At that time, as shown in FIG. 6, since the skin material A is fixed to the mold surface of the molding die only by the spring pressure of the elastic clip 20, the elastic clip 20 is inserted only by opening the split mold 12. The end portion A1 of the skin material A is smoothly removed from the portion 22. Then, as shown in FIG. 3, the cylinder member 31 of the ejecting device 30 protrudes from the mold main body 11 and ascends to remove the molded product P from the mold.

[0012]

[Effect of the device]

 As shown and described above, according to the skin material fixing structure of the foam molding die of the present invention, not only can the skin material be quickly and accurately set on the mold surface, but also the split mold for removing the skin material from the mold. It can be removed from the mold surface with the rotation of. Therefore, it is not necessary to remove the skin material from the split mold in advance before demolding, and the work efficiency can be significantly improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a foaming mold having a skin material fixing structure of the present invention.

FIG. 2 is a cross-sectional view of a foam molding die showing a demolding step.

FIG. 3 is a cross-sectional view of the foam molding die showing another state of the demolding step.

FIG. 4 is a perspective view showing an example of an elastic clip used in the skin material fixing structure of the present invention.

FIG. 5 is an enlarged sectional view of an essential part of a foaming mold showing the function of the device structure of the invention.

FIG. 6 is an enlarged sectional view of a main part of a foaming mold showing another example.

FIG. 7 is an enlarged sectional view of an essential part of a foam molding die showing an example of a conventional skin material fixing structure.

FIG. 8 is an enlarged cross-sectional view of a main part of a foaming mold showing a demolding step.

[Explanation of symbols]

 10 Foam Mold 11 Mold Main Body 12 Split Mold 20 Elastic Clip 22 Insertion Part A Skin Material

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area B29L 31:58 4F

Claims (1)

[Scope of utility model registration request] 1. A method in which an end of a skin material is fixed to a split mold portion to be opened and closed and the skin material is attached to a foam molding die body, and the split mold portion is inserted in a direction opposite to an opening direction thereof. A foam molding type skin material fixing structure comprising an elastic clip for sandwiching a skin material having a portion.