JPH0645149B2 - Forming method of pad material integrated with skin material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of molding a pad material integrated with a skin material. More specifically, the skin material and the frame are arranged in a foam molding die, and an opening formed in the skin material. More specifically, the present invention relates to a method of molding a pad material integrated with a skin material, in which a stock solution of a foamed synthetic resin is injected between the skin material and a frame, and a pad material is foam-molded integrally with the skin material and the frame in a state where a foaming mold is fitted. .

[0002]

2. Description of the Related Art Conventionally, in headrests, seatbacks, armrests and the like of vehicles, various pad materials integrally foamed with a skin material have been used. Also, when the pad material is integrally foam-molded with the frame inserted inside the skin material, there is a risk that the stock solution may adhere or leak near the opening of the skin material when the stock solution of the foamed synthetic resin is injected. , These stock solutions must be removed in the finishing process, and if the terminals formed in the opening come from the upper, lower, left and right sides of the main part, simply fold the terminals inward and foam-mold them. The shape of the pad material near the opening was not stable, and the appearance was significantly deteriorated. For this reason, the applicant of the present invention has proposed a "method for manufacturing a headrest" as described in Japanese Patent Publication No. 63-55954, which utilizes two foam pieces of an opening (slit) by utilizing the foaming pressure of a foamed synthetic resin. To prevent the stock solution from leaking from the opening.

[0003]

However, when the frame is inserted inside the skin material, the opening is inevitably large, and work such as attaching a separately formed patch to the opening is required. In the case of Japanese Examined Patent Publication No. 63-55954, there is a risk that the contact surfaces of the two thin pieces are in natural contact, and there is a risk that they will open, and there is a risk that misalignment and wrinkles will occur. . Furthermore, when foaming is performed by sandwiching a scallop etc. in the opening of the skin material, there is a risk that the undiluted solution may adhere or leak near the opening of the skin material. It was left on the part and remarkably deteriorated the appearance.

An object of the present invention is that there is no risk that the undiluted solution of the foamed synthetic resin leaks from the opening of the skin material, there is no risk of soiling the vicinity of the opening, and there is a risk of misalignment or wrinkles. (EN) Provided is a method for forming a skin material-integrated pad material, which does not have the shape of a funnel and remains in the opening of the skin material, has an excellent appearance, and can improve work efficiency and is economical.

[0005]

The present invention has been made in view of the above-mentioned problems, and a cylindrical body made of a synthetic resin film is inserted from the opening of the skin material to the inside of the skin material, It is characterized in that a stock solution of a foamed synthetic resin is injected through the container, the opening of the skin material is sealed with the tubular body sandwiched, and the pad material is foam-molded.

[0006]

According to the present invention, since the cylindrical body made of the synthetic resin film is inserted inside the opening of the skin material and the undiluted solution of the foamed synthetic resin is injected through the cylindrical body, the pad material It is possible to prevent the undiluted solution of the foamed synthetic resin from leaking through the opening of the skin material during foam molding, and prevent the displacement of the end of the skin material and the occurrence of wrinkles. Further, when the pad material is foam-molded, the cylindrical body made of the synthetic resin film becomes one thin film, so that when the opening portion of the skin material is brought into close contact, the shape of the cylindrical body made of the synthetic resin film is opened. There is no risk of being left in the club.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for forming a skin material integrated pad material according to the present invention will be described in detail below with reference to the drawings. 1 to 4 each show an outline of one embodiment of the present invention. In this embodiment, a case where the present invention is applied to an armrest of a vehicle seat as a skin material integrated pad material will be described. The same can be applied to the method of forming a pad material with a skin material as described above. An armrest 11 as a skin material integrated pad material includes a frame 12, a pad material 13 integrally formed on the outer periphery of the frame 12, and the pad material 1
And a skin material 15 that covers the outer circumference of the frame 3, and is attached to a side portion or a center portion of a seat back (not shown) via a hinge portion formed on one side portion of the frame 12. The skin material 15 includes a skin 15a on the surface side and the skin 15a.
And a cushioning material 15b laminated on the back side of the armrest, and in the embodiment shown in FIG.
The opening 17 is formed such that a pair of upper and lower terminals 17a and 17b facing each other are folded inward and overlapped.

Next, a method of forming the skin material integrated pad material will be described with reference to FIGS. First, as shown in FIG. 2, the skin material 15 is formed in advance in a state having a predetermined opening 17. The skin material 15 is arranged on the left and right molds 22 and 23 in a state where the left and right molds 22 and 23 of the foam molding mold 21 are opened. Next, the frame 12 is inserted inside the skin material 15. Next, a wire 25 having elasticity inside the pair of upper and lower terminals 17a and 17b of the opening 17 of the skin material 15,
26 are respectively inserted, and both ends of the wires 25 and 26 are locked at upper positions along the partition lines P of the left and right molds 22 and 23, respectively. The terminal 17a of the skin material 15,
The frame 12 was inserted inside the skin material 15 before inserting the wires 25 and 26 inside 17b.
Foaming mold 2 with frame 12 inserted inside 5
1 and then the wires 25, 26 may be inserted inside the ends 17a, 17b of the skin material 15. Further, the upper portions 22a and 23a of the left and right dies 22 and 23 are openable and closable by pivotal support portions 28 provided in the middle.

By inserting the wires 25, 26 inside the ends 17a, 17b of the skin material 15, the ends 17a, 17b of the skin material 15 are brought into close contact with each other by the elasticity of the wires 25, 26, and the opening 17 can be closed. It is done like this. As shown in FIG. 1, a cylindrical body 33 made of a synthetic resin film is attached to the injection head 31. The lower end of the cylindrical body 33 made of this synthetic resin film is formed in an open state in this embodiment. With one of the wires 25, 26 inside the ends 17a, 17b of the skin material 15 not attached to the left and right dies 22, 23 of the foam molding die 21, the lower end of the tubular body 33 made of the synthetic resin film is attached. Inserted inside the skin material 15, and then wire 25, 26 to the left and right molds 22, 2
Lock in the upper position of 3. In this state, the undiluted solution 13a of the foamed synthetic resin is injected into the skin material 15 through the tubular body 33. When the undiluted solution 13a of the foamed synthetic resin is injected, the cylindrical body 33 swells due to the injection pressure, which causes the opening 17 of the skin material 15 to be expanded and the undiluted solution 13a of the foamed synthetic resin between the skin material 15 and the frame 12. Injected. In addition, skin material 1
The undiluted solution 13a of the foamed synthetic resin may be injected in a state in which the opening 17 of 5 is previously expanded by using a hook member or the like, and when the undiluted solution 13a of the expanded synthetic resin is injected, as shown in FIG.
The jogo 19 may be inserted into the tubular body 33.

After injecting the stock solution 13a of the foamed synthetic resin,
The injection head 31 is pulled out from the upper end of the tubular body 33, and the stock solution 13a of the foamed synthetic resin is foamed and cured while the tubular body 33 is held in the opening 17 of the skin material 15. After the injection of the undiluted solution 13a of the foamed synthetic resin, the cylindrical body 33 is connected to the wire 25,
It is pressed by the elasticity of 26 to form one thin film, so that the opening 17 of the skin material 15 can be brought into close contact. In this state, the pad material 13 is integrally formed with the skin material 15 and the frame 12. At the time of molding the pad material 13, the ends 17a, 17b of the skin material 15 are impregnated with the undiluted solution 13a of the expanded synthetic resin, and the shape retention is strengthened. Pad material 13
After molding, the wires 25 and 26 are removed from the left and right molds 22 and 23, the left and right molds 22 and 23 are opened, and the armrest 11 as the skin material integrated pad material is released from the mold. After the pad material 15 is foamed and cured, the tubular body 33 exposed from the opening 17 of the skin material 15 is pulled out or cut to perform terminal treatment.

In the embodiment described above, the case where the lower end of the cylindrical body 33 made of a synthetic resin film is opened has been described. However, the lower end of the cylindrical body 33 is hermetically closed and a plurality of inflows are made to the side portions of the cylindrical body 33. It is also possible to form holes and inject the undiluted solution 13a of expanded synthetic resin between the skin material 15 and the frame 12 through the inflow hole to foam-form the pad material 13. In this case, the undiluted solution 13a of expanded synthetic resin is used. Can be prevented from being concentrated and injected into a part of the skin material 15, and a part of the skin material 15 can be prevented from being impregnated with the stock solution 13a of the foamed synthetic resin.

[0012]

The above is the method of the embodiment of the method for forming a pad material integrated with a skin material according to the present invention. According to such a method, a synthetic resin is formed inside the skin material from the opening of the skin material. Insert a tubular body made of a film, inject the undiluted solution of foamed synthetic resin through the tubular body, seal the opening of the skin material with the tubular body sandwiched, and foam-mold the pad material. Because I did
When foaming the pad material, the undiluted solution of the foamed synthetic resin does not leak from the opening of the skin material, and it is possible to prevent the displacement of the end of the skin material and the occurrence of wrinkles, etc. It is possible to obtain a method for forming a skin material-integrated pad material which does not remain in the opening of the skin material and has an excellent appearance and which is capable of improving work efficiency and is economical.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing a state in which an undiluted solution of a foamed synthetic resin of the method of the present invention is being injected.

FIG. 2 is a partial cross-sectional side view showing a state in which a skin material is arranged in the foam molding die.

FIG. 3 is a partial cross-sectional perspective view showing a state in which a stock solution of the foamed synthetic resin has been injected.

FIG. 4 is a partial cross-sectional side view of the pad material foam-molded.

[Explanation of symbols]

 11 armrest 12 frame 13 pad material 15 skin material 15a skin 15b cushioning material 17 openings 17a, 17b upper and lower terminals 21 foam molding dies 22, 23 left and right dies 25, 26 wire 31 injection head 33 tubular body made of synthetic resin film

Claims (2)

[Claims] 1. A foam molding die is provided with a skin material and a frame, and an undiluted solution of a foam synthetic resin is injected between the skin material and the frame through an opening formed in the skin material to form a foam molding die. In a molding method of a skin material-integrated pad material in which a pad material is foam-molded integrally with the skin material and the frame in a state of being matched with each other, a cylindrical body made of a synthetic resin film is formed inside the skin material from the opening of the skin material. A skin characterized by inserting and injecting an undiluted solution of a foamed synthetic resin through the tubular body, sealing the opening of the skin material while sandwiching the tubular body, and foam-molding a pad material. Forming method of integrated pad material. 2. The bottom end of the tubular body is hermetically sealed, and a plurality of inflow holes are formed in the side portion, and a stock solution of foamed synthetic resin is injected through the inflow holes between a skin material and a frame to form a pad material. The method for forming a skin material-integrated pad material according to claim 1, wherein the foam material is foam-molded.