JPH0584724B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a foam molding mold for a foam integral with skin material, and more specifically, it is provided with a lower mold and an upper mold, and a skin material is applied to the lower mold. The present invention relates to a foaming mold for a skin material-integrated foam body, which is installed and injects a stock solution of foamed synthetic resin into the inside of the skin material to form the foam integrally with the skin material.

[Conventional technology]

BACKGROUND OF THE INVENTION Conventionally, integral foamed skin materials have been used for seat cushions, seat backs, headrests, etc. of vehicles. The foaming mold for this integrally foamed skin material includes a lower mold and an upper mold that is fitted to the lower mold, and is designed such that it can be used by inserting a core mold. With the skin material placed in the lower mold, a core mold is inserted into the lower mold to form a hollowed-out portion of the foam, thereby reducing the amount of foamed synthetic resin stock solution used. A frame such as a frame or a head rest frame is inserted and a foam is molded integrally with the skin material and the frame.

In the conventional skin material of integral skin foam, the skin material is formed in a shape corresponding to the part covering the surface side of the molded product, for example, the main part and the side part, and the back side is formed in an open state. A stock solution of foamed synthetic resin was injected through the open part to form a molded product, and then the back side of the molded product was covered with a back cover or the like.

[Problem to be solved by the invention]

However, in conventional skin-integrated foams, the back side of the molded product, that is, the open part on the back side of the skin material, must be covered with a back cover, etc., but the open part on the back side of the skin material is made small. In some cases, it has been difficult to place the skin material on the lower mold. In addition, when attaching the back cover to the open part of the skin material using a connecting means such as a fastener, the fastener stuck along the open part will prevent the skin material from being folded back to the outside of the lower mold when it is placed on the lower mold. Was.

It is an object of the present invention to provide a method for lowering the skin material even when an inverse surface is formed on the side of the skin material when the open part on the back side of the skin material is formed small, and a fastener is fixed along the open part. A skin that can be easily and quickly placed along the mold, that allows the skin material to be reliably positioned and placed, and that allows the skin material-integrated foam to be taken out easily and quickly from the foam mold after molding. The present invention provides a foam mold for an integral foam body.

[Means to solve the problem]

The present invention has been made in view of the above-mentioned problems, and includes a lower mold and an upper mold, a skin material is disposed on the lower mold, and a stock solution of foamed synthetic resin is injected into the inside of the skin material to form a foam. In a foam molding mold for a foam integral with a skin material, in which a body is foam-molded integrally with the skin material, an irregular mold is removably attached to the upper end of the lower mold,
The molding surface of the irregular mold is formed to be continuous with the molding surface of the lower mold, and the end of the skin material disposed on the lower mold is led out from the molding surface side of the irregular mold to the back side, forming the irregular mold. The polyurethane mold is adapted to be locked to the lower mold, and the irregular mold can be removed from the lower mold when the foam mold is opened after molding the foam and the foam integral with the skin material is taken out. shall be.

[Effect]

According to the present invention, the rectangular mold is removably attached to the upper end of the lower mold, and the end of the skin material is locked to this rectangular mold, so that the open part on the back side of the skin material can be locked. Even if it is formed small and a connecting member such as a fastener is fixed to the outer periphery of the open part, the end of the skin material can be locked in an irregular shape, and the skin material can be integrally foamed after molding the foam of the lower mold. It is possible to remove the body from the irregular shape.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a foam molding mold for an integrally foamed skin material according to the present invention will be described in detail below with reference to the drawings.

FIGS. 1 and 3 each schematically show an embodiment of a foam molding mold for an integrally foamed skin material according to the present invention, and this embodiment will be described as being applied to a seat bag. This foam mold 11 is
A lower mold 12 and an upper mold 1 that is matched to the lower mold 12
3, and a core mold 14 is inserted between the lower mold 12 and the upper mold 13.
As the lower mold 12, upper mold 13, and core mold 14 of the foaming mold 11, an aluminum mold or a sheet metal mold can be used. An irregular mold 16 having a molding surface 16a continuous with the upper end of the molding surface 12a of the lower mold 12 is detachably attached to the upper end of the lower mold 12. An engagement pin 16b is formed at the lower end of the irregular mold 16 to protrude downward, and this engagement pin 16b is adapted to fit into an engagement hole 12b formed at the upper end of the lower mold 12. Furthermore, the engagement pin 16b and the engagement hole 12
It may be formed in the opposite direction to b, and it may be of any type as long as it can position and fix the irregular mold 16 to the lower mold 12 and is configured to be detachable. .

A pin member 17 is provided on the back side of the irregular mold 16 as a locking portion for the end 22c of the skin material 22, and this pin member 17 is inserted into the end 22c of the skin material 22.

FIG. 2 shows an outline of an embodiment of the skin material applied for this reference, and this skin material 22 has an open part 23 formed on the back side, which corresponds to the upper part of the back side of this skin material 22. One end 24a of the back cover portion 24 is connected to the position where the rear cover portion 24 is connected. Further, a fastener 2 is attached to the outer circumferential edge 23a of the open portion 23 of the skin material 22 and the outer circumferential edge 24b of the back cover 24 as an example of a connecting member.
5a and 25b are formed respectively, and this fastener 2
By mutually closing 5a and 25b, the open part 2
3 can be covered with a rear cover part 24 attached thereto. In addition, Fuasner 25
The rear cover portion 24 can be attached by an appropriate connecting means in place of the connectors a and 25b.

The skin material 22 disposed on the lower mold 12 consists of a skin 22a on the front side and a wadding 22b joined to the back side of the skin 22a, and the back cover portion 24 is formed from a single synthetic resin sheet. However, the back cover part 24 can be
It may be made of the same material as 2.

As shown in FIG. 1, a skin material 22 is provided on the lower mold 12, and a back cover portion 24 is connected to the skin material 22.
is led out from the upper end of the side part of the lower mold 12, and the end 22c of the skin material 22 is inserted into the pin member 17 of the irregular mold 16 and held.

Next, the core mold 14 and the upper mold 13 are matched. At this time, a frame such as a seat back frame can be inserted and integrally formed. A stock solution of foamed synthetic resin is injected through an injection port formed in the upper mold 13, and a foamed body 31 is formed integrally with the skin material 22, as shown in FIG.

Next, the lower mold 12 and the upper mold 13 are opened, the core mold 14 is removed, and the skin integral foam 21 is inserted into the lower mold 1.
Take out from 2. When this skin material integrated foam 21 is taken out from the lower mold 12, the engaging pin 17 of the irico mold 16 is removed.
is pulled out from the engagement hole 12b of the lower mold 12 and taken out from the lower mold 12 together with the reverse mold 16, so the end 22c of the skin material 22 is removed from the pin member 17 and the reverse mold 16 is removed. Note that after removing the irregular mold 16 from the lower mold 12, the integral skin foam 21 may be taken out from the lower mold 12.

Next, by attaching the back cover portion 24 to the back open portion 23 of the skin material 12 using fasteners 25a and 25b, the skin material integrated foam 21 with the back open portion 23 covered can be obtained. In the above-mentioned embodiment, the core mold 14 is used, but this may be omitted.

FIG. 4 shows a modified example of the foam molding mold according to the present invention, in which parts corresponding to those in the above-mentioned embodiment are given the same reference numerals, and further detailed explanation thereof will be omitted. The structure is similar to that of the embodiment described above, except that the end 22c of the skin material 22 is secured to the irregular mold 16 by a clip 17a.

That is, the end 22c of the skin material 22 is cut into an irregular shape 16.
Fold it back at the upper end, bring it out to the back side of the irregular mold 16, and attach a clip 17a to the upper end of this irregular mold 16.
The end 22c of the skin material 22 is pressed and held by this.

According to this configuration, the end 22c of the skin material 22 is held under pressure by the clip 17a, and impregnation can be prevented when the stock solution of the foamed synthetic resin is injected, and the contact portion between the clip 17a and the foamed body 31 is The end 22c of the skin material 22 and the foam 31 are formed in a non-bonded state, and the fasteners 25a and 25b can be easily opened and closed.

〔Effect of the invention〕

The above is the configuration of one embodiment of the foam molding mold for the skin material integrated foam according to the present invention. According to this configuration, the irregular mold is removably attached to the upper end of the lower mold, and the irregular mold is removably attached to the upper end of the lower mold. Since the end of the skin material is secured to the mold, even if the opening on the back side of the skin material is formed small and a connecting member such as a fastener is fixed to the outer edge of the opening, it can be used in an irregular shape. It is possible to lock the ends of the skin material in the mold, and the foam integrated with the skin material can be removed from the mold together with the irregular mold after the foam is molded. After molding, the skin-integrated foam can be taken out easily and quickly, and a foam mold for the skin-integrated foam can be obtained, which can significantly improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional explanatory diagram showing an outline of one embodiment of a foam molding mold according to the present invention, FIG. 2 is a back view of a skin material applied to the present invention, and FIG. 3 is a foam molding according to the present invention. FIG. 4 is a partially cross-sectional explanatory view showing a state in which a skin material integrated foam is formed using a mold, and FIG. 4 is a partially cross-sectional explanatory view showing a modification of the present invention. In the figure, 11...foaming mold, 12...lower mold, 1
2a... Molding surface, 12b... Engaging hole, 13... Upper mold, 14... Core mold, 16... Irregular mold, 16a
... Molding surface, 16b ... Engagement pin, 17 ... Pin member, 17a ... Clip, 21 ... Skin material integrated foam, 22 ... Skin material, 23 ... Back open part,
24... Back cover part, 31... Foam.

Claims (1)

[Claims] 1 A skin material comprising a lower mold and an upper mold, in which a skin material is disposed on the lower mold, and a stock solution of a foamed synthetic resin is injected into the inside of the skin material to form a foam integrally with the skin material. In the foam molding mold for the integral foam, an irregular mold is removably attached to the upper end of the lower mold,
The molding surface of the irregular mold is formed to be continuous with the molding surface of the lower mold, and the end of the skin material disposed on the lower mold is led out from the molding surface side of the irregular mold to the back side, forming the irregular mold. The polyurethane mold is adapted to be locked to the lower mold, and the irregular mold can be removed from the lower mold when the foam mold is opened after molding the foam and the foam integral with the skin material is taken out. Foam molding mold for integral foam skin material.