JP2007290211A - Method for producing cushioning pad - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a cushioning pad which can simply perform a work of attaching a reinforcement cloth to an upper mold and is excellent in workability. <P>SOLUTION: In the method for producing the cushioning pad having a center part, a pair of side parts, the reinforcement cloth 4, hollow parts on the back sides of the side parts, and a plurality of recesses for fitting a fitting implement on the side of a skin material, the upper mold 20 having an upheaval part 10, a plurality of projections 11, and a plurality of permanent magnets 12 is prepared. Magnetic adhesion sheets 24 are stuck to the reinforcement cloth parts 14 around a plurality of through holes 13 of the reinforcement cloth 4, the plurality of the projections 11 are inserted separately the plurality of the through holes 13, and the adhesion sheets 24 are stuck to the permanent magnets 12, so that the reinforcement cloth 4 is fixed to the upper mold 20, and a foaming resin stock solution is supplied into a cavity and expanded to obtain the cushioning pad. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention
A center portion, a pair of left and right side portions raised outward on the front side surface, a reinforcing cloth integrated on the back side surface, and a back side of the side portion recessed in the same direction as the raised direction of the side portion The present invention relates to a cushion pad manufacturing method for manufacturing a cushion pad that includes a recess and a plurality of recesses formed on the back side surfaces of the left and right side portions of the center portion for locking a locking member on the skin material side.

The cushion pad constitutes an automobile seat or a furniture seat. The reinforcing cloth is provided to prevent abnormal noise and damage to the cushion pad, and the recessed portion is provided for the purpose of fitting a seat frame.
Conventionally, the above cushion pad has been manufactured by the following means.
(1) As shown in FIG. 11, a raised portion 10 for forming the hollow portion, a plurality of convex portions 11 for forming the plurality of concave portions separately, and base ends of the plurality of convex portions 11 An upper die 20 having a plurality of barbed protrusions 29 arranged separately around the portion 11K is prepared.
(2) Protrusion holes 27 for the protrusions 29 are formed in the reinforcing cloth portions 14 around the plurality of through-holes 13 of the reinforcing cloth 4 into which the plurality of protrusions 11 are inserted, and the operator inserts the plurality of protrusions 11. The reinforcing cloth 4 is superposed and fixed to the upper mold 20 by inserting the plurality of through holes 13 separately and inserting the plurality of protrusions 29 into the protrusion holes 27. At this time, the operator inserts a finger into the space between the raised portion 10 and the convex portion 11 of the upper mold 20 to insert the plurality of protrusions 29 into the protrusion holes 27.
(3) The upper mold 20 is placed on the lower mold supplied with the foamed resin stock solution, and the foamed resin stock solution is foamed to produce a cushion pad.

  The upper mold ridges 10 are located on the left and right side parts of the upper mold 20 corresponding to the left and right side parts of the cushion pad, and the convex parts 11 correspond to the left and right side parts of the center part in the left and right direction. Since it is provided at a position close to the raised portion 10, according to the above means, it is difficult for an operator to put a finger between the raised portion 10 of the upper mold 20 and the convex portion 11, and the process (2) is troublesome. It took time.

  An object of the present invention is to provide a method of manufacturing a cushion pad that can easily perform the operation of attaching a reinforcing cloth to an upper mold and is excellent in workability.

The feature of the present invention is that
In the manufacturing method of the cushion pad described in the section of [Technical field] at the beginning,
A plurality of raised portions for forming the recesses, a plurality of convex portions for forming the plurality of concave portions, and a plurality of permanent portions separately disposed around the base end portions of the plurality of convex portions. Prepare an upper mold with a magnet,
Adhering an adhesive sheet having magnetism to a reinforcing cloth portion around a plurality of through holes of the reinforcing cloth for inserting the plurality of convex parts separately, and each of the plurality of convex parts to the plurality of through holes. By inserting and adhering the adhesive sheet to the permanent magnet, the reinforcing cloth is superposed and fixed on the upper mold, and foamed in a cavity formed between the upper mold and the lower mold relative to the upper mold The cushion pad is manufactured by supplying and foaming a resin stock solution.

  That is, a raised portion for forming the hollow portion, a plurality of convex portions for forming the plurality of concave portions, and a plurality of separately disposed around the base end portions of the plurality of convex portions. An upper mold equipped with a permanent magnet is prepared. Then, an adhesive sheet having magnetism is attached to the reinforcing cloth portions around the plurality of through holes of the reinforcing cloth for inserting the plurality of convex portions separately, and the plurality of convex portions are individually inserted into the plurality of through holes. Then, by adhering the adhesive sheet to the permanent magnet, the reinforcing cloth is superposed and fixed to the upper mold. Next, the foamed resin stock solution is supplied to the cavity between the upper mold and the lower mold and foamed to obtain a cushion pad.

  As described above, since the adhesive sheet adhered to the reinforcing cloth portions around the plurality of through holes of the reinforcing cloth is adsorbed by the permanent magnets arranged around the base end portion of the convex portion, Even if the portion and the convex portion are close to each other, it is not necessary for the operator to put his finger to the back between the two. That is, when the operator grips the reinforcing cloth portion around the through hole and moves the reinforcing cloth portion closer to the upper mold surface so that the plurality of convex portions are inserted into the plurality of through holes, respectively. The adhesive sheet stuck to the reinforcing cloth is attracted and attracted by the permanent magnet, and the reinforcing cloth is superposed and fixed on the upper mold. In addition, since the adhesive sheet is attached to the reinforcing cloth portion via the adhesive layer, the operation of attaching the adhesive sheet to the reinforcing cloth can be simplified. Thereby, the mounting | wearing operation | work of the reinforcement cloth with respect to an upper mold | type can be simplified.

In the present invention,
When the size of the through hole is set so that the convex portion can be inserted into the through hole with an interval in the radial direction of the convex portion, the following effects can be obtained.

  The rubbing between the convex portion and the inner peripheral surface of the through hole can be suppressed, and the problem that the convex portion is difficult to insert into the through hole due to the rubbing can be avoided.

In the present invention,
If the adhesive sheet is flexible, the following effects can be achieved.

  Even when the reinforcing cloth portion to which the adhesive sheet is attached is polymerized to the curved surface portion of the upper mold, the adhesive sheet can be easily deformed corresponding to the curved surface portion, and the upper mold surface and the reinforcing cloth It is possible to avoid a problem that a gap is formed between the portions.

According to the present invention,
It was possible to provide a cushion pad manufacturing method that can easily perform the operation of attaching the reinforcing cloth to the upper mold and has excellent workability.

[First Embodiment]
1 to 3 show a seat cushion pad (corresponding to a cushion pad) 100 for constituting a seat cushion for an automobile. 1 is a perspective view of the seat cushion pad 100, FIG. 2 is a cross-sectional view taken along line BB of FIG. 1, and FIG. 3 is a bottom view of the rear half of the seat cushion pad 100 (viewed from below). The seat cushion includes a seat cushion pad 100, a skin material 1, and a wire (not shown) embedded in the seat cushion pad 100 to lock a hook (not shown) on the skin material 1 side. .

  The seat cushion pad 100 is positioned on the center portion 2, the left and right outer sides of the center portion 2, and a pair of left and right side portions 3 raised on the outer side A of the front side surface M, and the back side surface N. Formed on the integrated reinforcing cloth 4, the recessed portion 5 on the back side of the side portion 3 recessed in the same direction R as the raised direction R of the side portion 3, and the surface N on the back side of the left and right side portions 6 of the center portion 2, And a plurality of rectangular recesses 8 for locking the locking member 7 on the skin material 1 side. The seat cushion pad 100 is made of a synthetic resin foam molding having elasticity such as a flexible polyurethane foam. Reference numeral 13 denotes a plurality of rectangular through holes formed in the reinforcing cloth 4, and the vertical and horizontal dimensions of the through holes 13 are set to be slightly larger than the vertical and horizontal dimensions of the recess 8. Reference numeral 9 is a square recess for pressure reduction that reduces the pressure on the thighs of both legs of the seated person. The locking device 7 attaches the seat cushion pad 100 to the seat frame and temporarily holds the skin material 1 in the recess 8 of the seat cushion pad 100 when the skin material 1 is attached to the seat cushion pad 100. Used for the purpose (to temporarily stop).

  The reinforcing cloth 102 is made of coarse blanket, felt, unemployed cloth, etc., and reinforces the back surface N of the seat cushion pad 100 to prevent the generation of noise caused by friction between the back surface N of the seat cushion pad 100 and the seat frame. To do. FIG. 4 shows the reinforcing cloth 4 before being integrated with the seat cushion pad 100. Reference numerals 15a and 15b are stitched portions to be sewn together, 16 is a square hole for exposing the square recess 9 for pressure reduction, and 17 is a mounting pin (not shown) on the upper mold 20 (see FIGS. 6 and 8). This is a round hole that inserts

A method for manufacturing the seat cushion pad 100 will be described.
(1) As shown in FIGS. 6, 8, and 9, a raised portion 10 for forming the hollow portion 5, a plurality of convex portions 11 for forming a plurality of concave portions 8, and a plurality of convex portions 11, The upper mold | type 20 provided with the several permanent magnet 12 arrange | positioned separately around the base end part 11K of the convex part 11 is prepared. The raised portion 10 and the convex portion 11 are close to each other in the width direction of the upper mold 20. The raised portion 10 is formed in a gentle mountain shape in the longitudinal section corresponding to the recessed portion 5, and the convex portion 11 is formed in a prismatic shape corresponding to the concave portion 8.
(2) Reinforcing cloth portions 14 around the plurality of through holes 13 of the reinforcing cloth 4 into which the plurality of protrusions 11 are inserted separately (as shown in FIG. 4, a pair of widthwise outer sides of the through holes 13 A pair of resin adhesive sheets 24 having magnetism and flexibility are adhered to the reinforcing cloth portion 14). Specifically, as shown in FIG. 9, among the both surfaces of the adhesive sheet 24, the adhesive sheet 24 is attached to the polymerization surface 14 </ b> M side of the adhesive sheet 24 with respect to the upper mold 20, but the adhesive sheet 24 is opposite to the adhesive sheet 24. You may stick 24.
As shown in FIGS. 10A and 10B, the adhesive sheet 24 is formed in a square shape. An adhesive layer 19 is provided on one surface, and a peeling piece 18 is attached to the adhesive layer 19. The adhesive sheet 24 contains metal powder such as iron powder, whereby the adhesive sheet is provided with magnetism. As a means for containing the metal powder, for example, there is a means for applying the metal powder to the other surface of the adhesive sheet 24. When adhering the adhesive sheet 24 to the reinforcing cloth portion 14, the adhesive sheet 24 is attached after the release piece 18 is peeled off. The adhesive sheet 24 has a vertical and horizontal length of 15 mm and a thickness of 0.7 to 0.8 mm (not limited to this value).
(3) As shown in FIG. 9, the plurality of convex portions 11 of the upper mold 20 are individually inserted into the plurality of through holes 13 of the reinforcing cloth 4, the adhesive sheet 24 is attracted to the permanent magnet 12, and the upper mold The reinforcing cloth 4 is superposed and fixed to the upper mold 20 by inserting a plurality of mounting pins 20 into the round holes 17 of the reinforcing cloth 4. The size of the through hole 13 is set so that the convex portion 11 can be inserted into the through hole 13 with an interval S in the radial direction 11G of the convex portion 11.
(4) A foamed resin stock solution (urethane stock solution) is supplied to the cavity 25 formed between the upper mold 20 and the lower mold 30 with respect to the upper mold 20 and foamed to remove the mold to obtain the cushion pad 100.

Perspective view of cushion pad (seat cushion pad) BB sectional view of FIG. Bottom view of the second half of the cushion pad Front view of reinforcing cloth AA sectional view of FIG. Perspective view of upper mold Lower mold perspective view Longitudinal front view of upper and lower molds Longitudinal sectional view showing a state where the reinforcing cloth is attached to the upper mold (A) is a plan view of the adhesive sheet, (b) is a side view of the adhesive sheet It is a longitudinal cross-sectional view which shows the prior art, and is a figure which shows the state which has attached the reinforcement cloth to the upper mold | type.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Skin material 2 Center part 3 Side part 4 Reinforcement cloth 5 Recessed part 6 Right-and-left both-side part 7 Locking tool 8 Recessed part 9 Indentation 10 of pressure reduction Square part 11 Convex part 11G Radial direction 11K of convex part Base of convex part End part 12 Permanent magnet 13 Through hole 14 Reinforcement cloth part 14M Superposition surface 15a, 15b Stitching part 16 Square hole 17 Round hole 18 Stripping piece 19 Adhesive layer 20 Upper mold 24 Adhesive sheet 25 Cavity 27 Protrusion hole 29 Projection 30 Lower mold 100 cushion pad (seat cushion pad)
A Outer side of front side surface M Front side surface N Back side surface R Uplift direction S Interval

Claims (3)

A center portion, a pair of left and right side portions raised outward on the front side surface, a reinforcing cloth integrated on the back side surface, and a back side of the side portion recessed in the same direction as the raised direction of the side portion A cushion pad manufacturing method for manufacturing a cushion pad including a recess and a plurality of recesses formed on the back side surfaces of the left and right side portions of the center portion and locking a locking member on the skin material side. ,
A plurality of raised portions for forming the recesses, a plurality of convex portions for forming the plurality of concave portions, and a plurality of permanent portions separately disposed around the base end portions of the plurality of convex portions. Prepare an upper mold with a magnet,
Adhering an adhesive sheet having magnetism to a reinforcing cloth portion around a plurality of through holes of the reinforcing cloth for inserting the plurality of convex parts separately, and each of the plurality of convex parts to the plurality of through holes. By inserting and adhering the adhesive sheet to the permanent magnet, the reinforcing cloth is superposed and fixed on the upper mold, and foamed in a cavity formed between the upper mold and the lower mold relative to the upper mold A method for manufacturing a cushion pad, wherein a resin stock solution is supplied and foamed to manufacture the cushion pad.   The method for manufacturing a cushion pad according to claim 1, wherein the size of the through hole is set so that the convex portion can be inserted into the through hole with a gap in the radial direction of the convex portion.   The method for manufacturing a cushion pad according to claim 1, wherein the adhesive sheet has flexibility.

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