KR20110117759A - Apparatus for forming form pad of seat - Google Patents

Abstract

Foam pad for sheet to prevent penetration of foaming liquid into foam pad Velcro's seating area to reduce defect rate of foam pad for sheet, and to improve adhesion work between seat cover and foam pad for sheet A molding apparatus is introduced.
The sheet foam pad forming apparatus for a sheet includes an upper mold 100 having a magnetic material provided therein, a lower mold 200 that is formed by forming a cavity by being combined with the upper mold 200, and a seating portion on which the hook 33 is fixed ( A foam pad velcro 300 having a blocking wall 320 extending upwardly from the seating portion 310 around the hook 33, wherein at least the blocking wall 320 is attachable to the magnetic material. Iron component], wherein the barrier wall 320 is disposed in a plurality of spaced apart from each other by a predetermined distance in the outer direction of the foam pad Velcro 300, and at least two of the barrier walls 320 are stepped. Is formed to have a different height so that, the upper mold 100 is characterized in that it is formed to have a protrusion of a shape corresponding to the step.

Description

Foam pad forming apparatus for sheet {APPARATUS FOR FORMING FORM PAD OF SEAT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam pad forming apparatus for a sheet, and more particularly, to a foam pad forming apparatus for a sheet for molding a sheet foam pad forming a seat back and a seat cushion of a vehicle seat.

In general, the seatback or seat cushion of the seat has a structure in which a seat cover for finishing is covered on the foam pad. The seat cover is partly attached to the foam pad for attachment in the manufacture of the product.

Referring to FIG. 1, when the seat cover C is attached to the foam pad P for the seat, the seat cover C is formed on the foam pad Velcro 30 located in the hook groove H of the foam pad P for the seat. Seat cover Velcro (B) attached to the) to secure the seat cover (C) to the seat foam pad (P).

Referring to FIG. 2, when foam molding the sheet foam pad P, the foam pad Velcro 30 is insert-molded in a state fixed inside the cavity of the mold 10 into which the foam liquid F is injected. The foam pad velcro 30 in the cavity is fixed by the magnetic fixing means 40 installed on the inner side of the upper mold 10. The foam pad velcro 30 has an iron component so that the foam pad velcro 30 can be attached to the magnetic fixing means 40. Included.

The foam pad velcro 30 has a structure in which a hook 33 for velcro is accommodated in a housing 34 containing an iron component. The housing 34 includes a horizontal panel-shaped mounting portion 31 on which the hook 33 is placed, and a blocking wall 32 surrounding the hook 33, and the blocking wall 32 includes the mounting portion 31. Extending upwardly from the tip is attached to the magnetic force holding means 40. The blocking wall 32 is attached to the magnetic fixing means 40 to block the inflow of the foaming liquid (F) to the hook 33 side during the foam pad (P) forming process, the upper mold 10 after the foam pad (P) molding ) Together with the magnetic force holding means 40 is removed from the blocking wall 32, the hook 33 in the housing 34 is exposed to the outside as it is. The seat cover Velcro (B) of the seat cover (C) is coupled to the hook (33).

On the other hand, although the plurality of blocking walls 32 are formed in the same height, the contact surface of the magnetic fixing means 40 in contact with the blocking wall 32 is a flat surface, so that the foamed hung barrier wall 32 and the upper portion A problem in which the foaming liquid F penetrates along the gap between the molds 10 and adheres to the hook 33 of the foam pad velcro 30, as indicated by a square box (dotted line) in FIG. 1, occurs. There was. As described above, in the case of a defective product in which the foam liquid F is fixed to the hook 33 of the foam pad Velcro 30, it is difficult to attach the work between the seat cover C and the foam pad P for the sheet.

As described above, the matters described as the background art are merely for the purpose of improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the related arts already known to those skilled in the art. .

The present invention has been proposed to solve the above-mentioned problems, and forms the barrier walls of the foam pad velcro at different heights to form a step, and forms the upper mold to have protrusions having a shape corresponding to the steps of the barrier wall. By preventing the penetration of the foam liquid into the seating portion of the Velcro, it is possible to reduce the defective rate of the foam pad for the sheet and to provide a foam pad molding apparatus for the sheet which can improve the attachment workability between the sheet cover and the foam pad for the sheet. The purpose.

In addition, the step is formed by the barrier wall and the seating portion of the foam pad Velcro, and the upper mold is formed to have a protrusion having a shape corresponding to the step, thereby preventing the penetration of the foam liquid into the seating portion of the foam pad Velcro, thereby An object of the present invention is to provide a foam pad molding apparatus for sheet which can reduce the defective rate of the foam pad for the sheet and can improve the attachment workability between the sheet cover and the foam pad for sheet.

Foam pad forming apparatus for a sheet according to an embodiment of the present invention for achieving the above object, the upper mold is provided with a magnetic material on the inside, the lower mold is molded with the upper mold to form a cavity, the hook is fixed And a foam pad velcro having a blocking wall extending upwardly from the seating portion around the hook, wherein at least the blocking wall contains an iron component so as to be attachable to the magnetic body, wherein the blocking wall is formed of the foam. The pad velcro is disposed in a plurality of spaced apart a certain distance in the outer direction, at least two of the plurality of blocking walls are formed at different heights to form a step, the upper mold is formed to have a protrusion having a shape corresponding to the step It features.

The barrier wall includes a pair of first barrier walls formed around the seating portion, and a pair of second barrier walls positioned at an outer side of the first barrier wall and having a height greater than that of the first barrier wall. Preferably, the upper mold includes a stepped protrusion formed in a shape corresponding to the stepped shape by the first blocking wall and the second blocking wall.

The barrier wall may include a pair of first barrier walls formed around the seating portion, a pair of second barrier walls positioned outside the first barrier wall and formed to a height greater than that of the first barrier wall. And a pair of third blocking walls positioned outside the second blocking wall and formed to a smaller height than the second blocking wall, wherein the upper mold is formed by the first to third blocking walls. It is preferable to include the concave-convex protrusions formed in a shape corresponding to the stepped shape.

Foam pad forming apparatus for a sheet according to an embodiment of the present invention for achieving the above object, the upper mold is provided with a magnetic material on the inside, the lower mold is molded with the upper mold to form a cavity, the hook is fixed A foam pad velcro having a seating portion and a barrier wall extending upwardly from the seating portion around the hook, wherein at least the barrier wall contains iron so as to be able to attach to the magnetic material; Located at an outer side of the first blocking wall spaced apart from the first blocking wall by a predetermined distance so that a predetermined size of groove is formed between the pair of first blocking walls formed around the seating portion and the first blocking wall. And a pair of second blocking walls, wherein the upper mold includes convex concave-convex protrusions formed in a shape corresponding to a stepped shape by the first and second blocking walls and the groove. It characterized.

According to the foam pad forming apparatus for sheets as described above, the blocking walls of the foam pad velcro are formed at different heights so as to create a step, and the upper mold is formed to have protrusions of a shape corresponding to the steps of the blocking wall so that the foam pad velcro is formed. By preventing penetration of the foaming liquid into the seating portion of the sheet, the defective rate of the foam pad for the sheet can be reduced, and the attachment workability between the sheet cover and the foam pad for the sheet can be improved.

In addition, a step is formed by the blocking wall of the foam pad velcro and the seating portion, and the upper mold is formed to have a protrusion having a shape corresponding to the step so that the foam liquid is prevented from penetrating into the seating portion of the foam pad velcro. The defective rate of the foam pad can be reduced, and the attachment workability between the seat cover and the foam pad for the sheet can be improved.

1 shows a seat of a vehicle and problems of the prior art;
2 is a view showing a foam pad forming apparatus for a conventional sheet.
Figure 3 is a view showing a foam pad forming apparatus for a sheet according to an embodiment of the present invention.
Figure 4 is a view showing a foam pad forming apparatus for a sheet according to another embodiment of the present invention.
5 is a view showing a foam pad forming apparatus for a sheet according to another embodiment of the present invention.

Hereinafter, a foam pad forming apparatus for a sheet according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1, 3 and 4, the foam pad forming apparatus for a sheet according to an embodiment of the present invention includes upper and lower molds (100, 200), and foam pad Velcro (300).

The upper and lower molds 100 and 200 form a cavity for accommodating the foaming liquid F. On the other hand, the upper mold 100 is provided with a magnetic material that is a permanent magnet or an electromagnet therein. In addition, the inner surface of the upper mold 100 is provided with a protrusion.

Here, the magnetic material may be installed between the protrusion and the upper mold 100, may be installed to be embedded in the inner surface of the upper mold 100, or may be installed inside the protrusion. In addition, the protrusion itself may be made of a magnetic material, in which case the protrusion also serves as a magnetic material to fix the foam pad Velcro 300 inside the cavity.

Since the foam pad velcro 300 contains an iron component, the foam pad velcro 300 is fixed by a magnetic material provided in the upper mold 100 in the cavity, and in this state, the foam liquid F is filled into the cavity. When the foaming liquid F is hardened and molded into a foam pad for a sheet, it is molded integrally with the foam pad for a sheet.

Here, the foam pad velcro 300 has a structure in which the hook 330 for velcro is accommodated in the housing 340 containing the iron component. The housing 340 has a seating portion 310 in the form of a horizontal panel in which the hook 330 is fixed, and is formed around the hook 330 to block the foam liquid F from penetrating to the hook 330. The plurality of arrangements spaced apart from each other in the outer direction of the pad Velcro 300 includes a plurality of blocking walls 320.

Here, it is preferable that at least two of the blocking walls 320 are formed at different heights so as to generate a step, and thus, the upper mold 100 may be provided with a protrusion having a shape corresponding to the step.

An embodiment of the shape of the protrusion wall installed in the barrier wall 320 and the upper mold 100 is shown in FIG. 3.

Referring to FIG. 3, the blocking wall 320 is a pair of first blocking walls 321 formed around the hook 330, and positioned at left and right outer sides of the first blocking wall 321. And a pair of second blocking walls 322 formed at a height greater than that of the first blocking wall 321, and the first blocking wall 321 and the second blocking wall are formed on the inner surface of the upper mold 100. A stepped protrusion 110 is provided that has a shape corresponding to the stepped shape by the wall 322.

On the other hand, Figure 4 shows another embodiment of the shape of the protrusions provided on the barrier wall 320 and the upper mold (100).

Referring to FIG. 4, the blocking wall 320 is a pair of first blocking walls 321 formed around the hook 330, and positioned at left and right outer sides of the first blocking wall 321. A pair of second blocking walls 322 formed at a height greater than that of the first blocking walls 321 and located at the left and right outer sides of the second blocking walls 322 to be more than the second blocking walls 322. A pair of third blocking walls 323 formed at a small height, and the upper mold 100 has a shape corresponding to a stepped shape by the first blocking walls 321 to the third blocking walls 323. Concave concave-convex protrusion 120 is provided.

The stepped wall 110 or the concave convex-convex protrusion 120 which is formed to have a step corresponding to the stepped wall and the step wall formed by the stepped wall 320 and the close wall 320 is in close contact with the block wall 320. The combined structure of the upper mold 100 having a) is a foaming part (F) during foam molding along the gap between the blocking wall 320 and the upper mold 100, and the seating portion of the foam pad velcro 300 ( By making the path penetrating into the 310 long and complicated to effectively limit the movement of the foam liquid F having a certain viscosity, the foam liquid to the hook 330 located in the seating portion 310 of the foam pad Velcro 300 (F) prevents penetration.

Therefore, the defective rate of the foam pad for foam sheet P to be foamed can be reduced, and the attachment workability between the sheet cover and the foam pad for sheet can be improved.

On the other hand, Figure 5 shows a foam pad forming apparatus for a sheet according to another embodiment of the present invention.

The configuration of the foam pad forming apparatus for a sheet according to another embodiment of the present invention and the function of each configuration are the same as or similar to the embodiments of the present invention described above, and a detailed description thereof will be omitted.

However, the foam pad forming apparatus for sheet according to another embodiment of the present invention in the shape of the foam pad Velcro 300 and the shape of the protrusion provided on the inner surface of the upper mold 100 and the embodiment of the present invention There is a difference.

Hereinafter will be described in detail with respect to these differences.

Referring to FIG. 5, the foam pad forming apparatus for a sheet according to another embodiment of the present invention includes an upper mold 100 having a magnetic material provided therein, and a lower mold 200 that is formed by molding with the upper mold 200. ), A foam pad velcro (300) having a seating portion (310) to which the hook (33) is fixed, and a blocking wall (350) extending upwardly from the seating portion (310) around the hook (33). do.

Here, the foam pad Velcro 300 has a structure in which the hook 330 for the Velcro is accommodated in the housing 360 containing the iron component. The housing 360 has a seating portion 310 having a horizontal panel shape in which the hook 330 is fixed, and a plurality of housings formed around the hook 330 to block penetration of the foam liquid F to the hook 330. The blocking wall 350 is included.

The blocking wall 350 has a predetermined size of a groove 370 formed between the pair of first blocking walls 351 formed around the hook 33 and the first blocking wall 351. And a pair of second blocking walls 352 spaced apart from the first blocking wall 351 by a predetermined distance so as to be located outside the first blocking wall 351, and having an inner surface of the upper mold 100. The first and second blocking walls 351 and 352 and the convex convex-convex protrusions 130 formed in a shape corresponding to the step shape by the groove 370 are provided.

The step formed by the blocking wall 350 and the groove 370 of the foam pad Velcro 300 and the convex uneven protrusion 130 formed in a shape corresponding to the step are in close contact with the blocking wall 320. The combined structure of the upper mold 100 is a foaming liquid (F) during the foam molding to the seating portion 310 of the foam pad Velcro 300 along the gap between the barrier wall 350 and the upper mold 100 By effectively limiting the movement of the foam liquid F having a certain viscosity by making the penetrating path long and complicated, the foam liquid F to the hook 330 located at the seating portion 310 of the foam pad Velcro 300. Prevent it from penetrating.

Therefore, the defective rate of the foam pad for foam sheet P to be foamed can be reduced, and the attachment workability between the sheet cover and the foam pad for sheet can be improved.

While specific embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that the present invention may be made without departing from the spirit and scope of the invention as set forth in the claims below. It is to be understood that various modifications and changes can be made.

100: upper mold 200: lower mold
300: foam pad Velcro 110: stepped protrusion
120: concave convex-convex protrusion 130: convex concave-convex protrusion
310: mounting portion 320: barrier wall
321: first barrier wall 322: second barrier wall
323: third blocking wall B: seat cover Velcro

Claims (4)

An upper mold 100 having a magnetic material provided therein;
A lower mold 200 formed with the upper mold 200 to form a cavity;
Foam pad Velcro 300 having a seat 310 to which the hook 33 is fixed and a blocking wall 320 extending upwardly from the seat 310 around the hook 33, wherein at least blocking The wall 320 contains an iron component to be attachable to the magnetic body;
The blocking wall 320 is disposed in a plurality of spaced apart a predetermined distance in the outer direction of the foam pad Velcro 300, at least two of the plurality of blocking walls 320 are formed at different heights to form a step, Upper mold 100 is a foam pad forming apparatus for a sheet, characterized in that formed to have a protrusion having a shape corresponding to the step. The method according to claim 1,
The blocking wall 320 is a pair of first blocking walls 321 formed around the seating part 310 and the first blocking wall 321 located outside the first blocking wall 321. And a pair of second blocking walls 322 formed at a height greater than), and the upper mold 100 has a step shape formed by the first blocking walls 321 and the second blocking walls 322. Foam pad forming apparatus for a sheet, characterized in that it comprises a stepped protrusion (110) made of a corresponding shape. The method according to claim 1,
The blocking wall 320 is a pair of first blocking walls 321 formed around the seating part 310 and the first blocking wall 321 located outside the first blocking wall 321. A pair of second blocking walls 322 formed at a height greater than) and a pair formed at a height smaller than the second blocking walls 322 at an outer side of the second blocking walls 322. And a third blocking wall 323, wherein the upper mold 100 has a concave-convex projecting portion formed in a shape corresponding to a stepped shape by the first blocking wall 321 to the third blocking wall 323 ( A foam pad forming apparatus for a sheet, comprising: 120). An upper mold 100 having a magnetic material provided therein;
A lower mold 200 formed with the upper mold 200 to form a cavity;
Foam pad Velcro 300 having a seat 310 to which the hook 33 is fixed and a blocking wall 350 extending upwardly from the seat 310 around the hook 33, wherein at least blocking Wall 350 contains iron so as to be attachable to the magnetic body;
The blocking wall 350 has a predetermined size of a groove 370 between the pair of first blocking walls 351 formed around the seating part 310 and the first blocking wall 351. And a pair of second blocking walls 352 spaced apart from the first blocking wall 351 by a predetermined distance so as to be formed and positioned outside the first blocking wall 351, and the upper mold 100 includes: Foam pad forming apparatus for a sheet, characterized in that it comprises a convex concave-convex protrusion (130) formed in a shape corresponding to the stepped shape by the first and second blocking walls (351, 352) and the groove (370).

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