JPS5995123A - Monolithical molding method of synthetic resin frame and padding material - Google Patents

Abstract

PURPOSE:To reduce the operation space and to accelerate foamed curing as well as the operation by a method wherein a synthetic resin frame and a padding material are molded into one body. CONSTITUTION:Thermosetting resin 2' is injected into top force 13 to mold a synthetic resin frame 2. Next the raw liquid 3' of foaming synthetic resin is injected into a bottom force 12 and the top force fitted with the synthetic resin frame 12 is pivoted around a hinge 14 to make clamping with the bottom force 12. When the raw liquid 3' of foaming synthetic resin is foam-cured in this status, the heating time of the top force 13 in case of heating the mold 11 to accelerate the foam-cure may be shortened remarkably since the top force 13 is already heated in case of molding the synthetic resin frame 2. The raw liquid 3' of foaming synthetic resin may be junctioned with the synthetic frame 2 in case of the foam-curing to produce a seat cushion 1 as a product made of the synthetic resin frame 2 and the padding material 3 junctioned with each other into one body.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of integrally molding a synthetic resin frame and a padding material, and more specifically, the present invention relates to a method of integrally molding a synthetic resin frame and a padding material. The present invention relates to a method of integrally molding a synthetic resin frame and a pad material, in which a pad material is molded integrally with the synthetic resin frame.

Conventionally, synthetic resin frames have been used for seat cushion bodies and interior parts of vehicles to reduce the weight of the vehicle. A synthetic resin frame is formed by molding, and a stock solution of foamed synthetic resin is injected into a foaming mold, and a padding material is formed by foaming, and the separately formed synthetic resin frame and padding material are bonded together using an adhesive. These materials are joined together to obtain seat cushion bodies and interior parts as products.

However, when using the conventional method, a mold for molding the synthetic resin frame and a foam mold for molding the padding material are required, and the work space for arranging these molds is large. This had to lead to an increase in manufacturing costs. When foaming and curing the stock solution of foamed synthetic resin, the foaming mold is heated appropriately to promote foaming curing, but this method has the disadvantage that it takes time for heat conduction in the foaming mold, making it impossible to perform the work quickly. Was.

The object of the present invention is to be able to use a foam mold as the final mold for molding a synthetic resin frame, to reduce the work space, and to enable foam curing of the stock solution of foamed synthetic resin. The present invention provides a method of integrally molding a synthetic resin frame and a pad material, which is extremely economical and allows work to be carried out quickly, and will be described in detail below with reference to the drawings.

1 to 5 schematically show an embodiment of the method of integrally molding a synthetic resin frame 2 and a pad material according to the present invention. In this embodiment, a synthetic resin frame 2 and a pad material are integrally formed. 3 is shown, but the present invention is not limited thereto.

FIG. 1 shows a foam mold 11, the lower mold 12 of this foam mold 11 is molded into a shape corresponding to the cushion portion of the seat, and the upper mold 13 is formed into a shape corresponding to the cushion frame. has been done. The lower mold 12 and the upper mold 13 are rotatably connected by a hinge 14, and are configured so that the upper mold 13 can be rotated to match the lower mold 12.

With the upper mold 13 open, the thermosetting resin 2 is applied to the upper mold 13.
' is injected as shown in FIG. The upper mold 13 is heated in advance by an appropriate heating means (not shown), or heated after the thermosetting resin 2' is injected, and the synthetic resin frame 2 is heated through the thermosetting resin 2'. Shape. As shown in phantom lines in FIG. 3, a pressure member 15 is disposed so as to be movable up and down, facing the upper mold 13 of the foaming mold 11, and presses the plate-shaped thermoplastic resin 2.
" may be placed on the molding surface of the upper mold 13 of the foaming mold 11, and the pressure member 15 may be lowered to mold the synthetic resin frame 2.

Next, as shown in FIG. 3, the foamed synthetic resin stock solution 3' is injected into the foam mold 110 and the lower mold 12, and the upper mold 13 is rotated about the hinge 14 to match the lower mold 12. (See Figure 4). The synthetic resin frame 2 remains attached to the upper mold 13.

With the upper mold 13 and lower mold 12 of the foaming mold 11 clamped together, the stock solution 3' of the foamed synthetic resin is foamed and cured, and the pad material 3 is molded as shown in FIG. When foaming and curing the stock solution 3' of foamed synthetic resin, the upper mold 13 is heated when molding the synthetic resin frame 2, so when heating the foaming mold 11 to promote foaming curing, the upper mold 13
heating time can be significantly shortened.

The stock solution 3' of foamed synthetic resin is bonded to the synthetic resin frame 2 during foam curing, and the synthetic resin frame 2 and pad material 3 are bonded together.
It is possible to obtain a seat cushion body 1 as a product in which the two are integrally joined.

The above is an outline of one embodiment of the method for integrally molding a synthetic resin frame and pad material according to the present invention. According to this method, the synthetic resin frame and pad material are individually molded using different molds. There is no need for separate formation, which improves the working environment, and also eliminates the need for adhesives and bonding work to join each other. Also, it can promote foaming curing of the stock solution of foamed synthetic resin, improving work efficiency. It is possible to obtain an economical method for integrally molding a synthetic resin frame and a pad material.

[Brief explanation of drawings]

Figures 1 to 5 schematically show an example in which the method of integrally molding a synthetic resin frame and pad material according to the present invention is applied to a seat cushion body, and Figure 1 shows a foam molding method. A cross-sectional explanatory diagram of the mold. Fig. 2 is a cross-sectional explanatory diagram showing a state in which a synthetic resin frame is molded using the upper mold. Figure 3 is a cross-sectional explanatory diagram showing a state in which the stock solution of foamed synthetic resin is injected into the lower mold. Figures 4 and 4 are cross-sectional explanatory views showing the state in which the foam molds are matched, and Figure 5 is a cross-sectional view showing the state in which the stock solution of foamed synthetic resin is foamed and cured to form a pad material integrated with the synthetic resin frame. It is a diagram. In the figure, 1...Cushion body, 2.Synthetic resin frame, 2'...Thermosetting resin, 2''.Thermoplastic resin, 3.
... Pad material, 3'... Stock solution of foamed synthetic resin, 11.
...Foaming mold, 12...lower mold, 13...upper mold. Figure 1 12 Figure 4 2 Figure 5

Claims (1)

[Claims] A synthetic resin frame is molded using the upper mold of a foam mold,
A foamed synthetic resin stock solution is injected into the lower mold of a foam molding mold, the upper mold with the synthetic resin frame attached is molded to the lower mold, and the foamed synthetic resin stock solution is foamed and cured to form a synthetic resin frame. A method of integrally molding a synthetic resin frame and a pad material, characterized by molding the pad material integrally with the frame.