KR100486387B1 - Forming apparatus for using plastic foam - Google Patents

Abstract

The present invention relates to a foaming device of a foamable material, the support 20 and the tip portion 32 is coupled to the interior of the air permeable body 10 having a breathable insert into the interior of the skin body 10 And a dispersing member 50 formed to form a hollow body with a thin film material in front of the distal end portion 32 of the injection member 30. The foamed liquid supplied to the inside of the epidermis 10 through the dispersion member 50 is dispersed by the dispersion member 50 so that foaming starts before the inner surface of the epidermis 10 comes into contact with the inner surface of the epidermis 10 in a liquid state. It does not penetrate the inner surface of the foam 10) has the effect of preventing the occurrence of the hardened layer, and the cost is low and easy to install, reducing the cost and simplifying the manufacturing process.

Description

Forming apparatus for using plastic foam

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foaming apparatus for foaming materials for molding an article such as a headrest by a foaming material, and more particularly, to a hollow member made of a thin film at a front end position of an injection member inserted into an epidermal body. The present invention relates to a foaming apparatus for a foamable material having a foaming material (hereinafter referred to as a foaming liquid) provided therein so as to start foaming in a state before contact with the epidermal body in a liquid state to prevent the occurrence of a hardened layer.

In general, the headrest for a vehicle is manufactured by sewing a fabric having breathability and injecting and foaming a foam solution therein to provide breathability and a cushion function.

Such a foam molding apparatus is to inject a foaming solution such as urethane into the inside of the skin, which is sewn in a desired form, to instantaneously foam and harden the foaming injection tube inserted into the skin, and a dispersion plate for dispersing the foam. It will be provided.

The applicant has a simple structure, but the foaming liquid is not in contact with the inner surface of the epidermis in the liquid state at the beginning of injection, and at the same time, the Republic of Korea Patent No. 204817 (name: foaming method and foaming of the foamable material) Device).

The foaming method and foaming device of such a foam material uses the inner end of the inlet of the sealing member for sealing the open insert of the epidermis, or the dispersing member which is built in the epidermis by being coupled to the distal end of the injection member of the foam, such a The dispersing member is manufactured in the form of a ball or bag with a net cloth, or in the form of a bag or container made of a thin film of vinyl material or ruptured by the foaming pressure of the injected foam, or a plurality of small pores are installed at the front end and the width of the main surface. This narrow hole is composed of synthetic resin cylinders installed in round or mesh shape.

However, the dispersion member according to the prior art has a problem in that the manufacturing cost is increased because it must be manufactured in the form of a ball or a bag having a predetermined shape using a net cloth separately.

In addition, there is a problem in that the entire manufacturing process is complicated as the coupling process for combining the dispersion member and the sealing member one by one is added.

SUMMARY OF THE INVENTION An object of the present invention devised in view of the above problems is to provide a foaming apparatus of a foamable material in which the foaming liquid is uniformly dispersed in the interior of the epidermis without being in direct contact with the epidermis in a liquid state. will be.

Another object of the present invention is to provide a foaming apparatus of a foamable material material material cost is reduced.

The present invention for achieving the above object is a front end portion is inserted into the interior of the skin having a breathable injection member for supplying a foaming liquid; Both sides of the support is coupled to the inside of the epidermis, it is configured to include a thin film-like dispersion member which is installed at a predetermined interval with the front upper and lower portions of the injection member inserted into the inside of the epidermis.

The dispersion member is preferably installed in a hollow body by winding both rods of the support with a thin film material.

Hereinafter, a first preferred embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In the foaming apparatus according to the first embodiment of the present invention, an injection member (30) into which the front end portion (32) is inserted into the air permeable body (10), and the insertion hole (11) inside the skin body (10). Dispersion formed in the hollow body to be supported on both sides of the support member 20, the sealing member 40 to block the insertion opening 11 of the epidermis 10, the support 20 is inserted through the first half through the support 20 It is comprised including the member 50.

The dispersion member 50 is formed of a thin film material such as vinyl, so the material cost is low, and the shape of the hollow body is formed by winding both side rods 21 of the supporter 20 without the need for manufacturing in advance in a specific form. The installation process is simplified to simplify the manufacturing process.

In the outer skin 10 according to the present invention, a space is formed inside the main surface portion except for the insertion hole 11, and the binding piece 12 extends on the inner edge portion of the insertion hole 11.

Sponge pads laminated on the inner surface of the epidermis 10 are classified into high density and low density. In the case of the high density pad, the cost is increased and the thickness of the cured layer of the foamed foam is 3 mm. In the case of a pad, the cost is reduced and the thickness of the cured layer is reduced to about 1 mm.

Moreover, the support tool 20 inserted into the inside of the outer_skin | epidermis 10 is provided with the both-side rod 21 by which the steel rod was bent to the "U" shape.

The injection member 30, which is a means for supplying the foaming liquid, has a funnel-shaped coupling part 31 to which the foaming liquid source is coupled, and a tip end portion 32 which is formed by a pipe having a smaller width in front of the coupling part 31. Consists of

The sealing member 40 according to the first embodiment of the present invention is narrow in width and long left and right formed of synthetic resin, and a coupling hole 41 is formed in the center of the sealing frame 43, and both sides of the through-boss 42 ) Is formed, the suture opening (43a) is formed on both sides of the coupling hole 41, the auxiliary dispersing opening 54 is inserted into the interior of the epidermis (10) in the center horizontally to the "c" shape Formed. An opening 54a is formed in the auxiliary dispersion opening 54.

The use state of the foaming apparatus according to the first embodiment of the present invention configured as described above will be described with reference to FIGS. 2A and 2B.

As shown in FIG. 2A, the side bars 21 of the supporter 20 couple the sealing member 40 to the supporter 20 so as to penetrate both side bosses 42 of the suture frame 43. Open the insertion hole 11 of the epidermis 10 and insert the first half of the support 20 in which the dispersion member 50 of the vinyl film is wound in a double layer into the first half of the both side bars 21 to seal the suture 43a. Inserting the coupling piece 12 extending into the insertion hole 11 into the insertion hole 11 of the epidermal body 10 to be sealed by the sealing member 40, and into the coupling hole 41 of the sealing member 40. The tip end portion 32 of the injection member 30 is inserted. In this case, the tip end portion 32 of the injection member 30 is positioned inside the auxiliary dispersing opening 54 within the skin 10. The dispersing opening 54 is located in the dispersing member 50.

In this state, when the foaming liquid is injected into the epidermal body 10 through the injection member 30, the foaming liquid ejected through the front end portion 32 of the injection member 30 and both sides of the auxiliary dispersing opening 54 It is supplied to the inside of the epidermis 10 in a state of being dispersed through the opening 54a. In this way, the foamed liquid supplied while passing through the auxiliary dispersing opening 54 is dispersed without being directly contacted with the upper and lower parts of the epidermal body 10 by the dispersing member 50 which blocks the space on both sides of the auxiliary dispersing opening 54 again. Guided to both ends of the member 50, the foaming liquid is started to foam while passing through the dispersion member 50, the foaming liquid is not in contact with the epidermis 10 in a liquid state, the interior of the epidermis 10 To be uniformly dispersed.

Figure 2b is a cross-sectional view showing the headrest in the manufacturing completed state separated from the mold 60 after the foaming is completed.

3A and 3B illustrate a second embodiment of the present invention, an injection member 30 into which an end portion 32 is inserted into an air permeable body 10 and inside the skin 10. The support 20 to which the first half is inserted and fixed through the insertion opening 11, the sealing member 40 to block the insertion opening 11 of the epidermis 10, and both rods 21 of the support 20. It is configured to include a dispersion member 50 is supported on to form a hollow body as in the first embodiment, the coupling hole 41 through which the insertion portion 32 of the injection member 30 in the center and A sealing groove 43b into which the inner circumference of the insertion hole 11 of the skin 10 is fitted into the sealing member 40 having the through boss 42 through which both side bars 21 of the support 20 penetrate. Is different from the first embodiment.

The auxiliary dispersing opening 54 formed in the sealing member 40 is wrapped by the dispersing member 50 wound around both rods 21 of the support 20.

The use state of the foaming apparatus according to the second embodiment of the present invention configured as described above will be described with reference to FIGS. 4A and 4B.

As shown in FIG. 4A, the front end portion 32 of the injection member 30 is inserted into the coupling hole 41 of the sealing member 40, and both side rods 21 of the support 20 are inserted into both side through bosses 42. The suture groove formed in the suture frame 43 by inserting the first half of the support 20 into the insertion hole 11 of the epidermis 10 in a state where the sealing member 40 is coupled to the support 20 by passing through the support member 20. When the inner periphery of the insertion hole 11 is inserted into 43b), the insertion hole 11 of the outer skin body 10 is sealed by the sealing member 40. In this case, the distal end portion 32 of the injection member 30 is located inside the auxiliary dispersing opening 54 in the interior of the skin 10 in which the insertion opening 11 is sealed, and the auxiliary dispersing opening 54 is a hollow body. It is located inside the dispersion member 50.

In this state, when the foam liquid is injected into the epidermis 10 through the injection member 30, the foam liquid ejected through the tip portion 32 of the injection member 30 is the auxiliary dispersion port 54 and the auxiliary dispersion Since foaming starts in the state before the contact with the epidermis 10 by the dispersion member 50 surrounding the sphere 54, the liquid foam does not penetrate the inner surface of the epidermis 10. 4b is a sectional view showing the completed headrest separated from the mold 60 after foaming is completed.

FIG. 5 illustrates a third embodiment of the present invention, in which a tip portion 32 is inserted into an air permeable body 10, and both side bars (bars) in a through hole 12 ′. 21 is penetrated and the first half of which is inserted into and supported by the skin 10, the dispersion member 50 supported by both rods 21 of the support 20 to form a hollow body, A foaming device of a foamable material is shown that includes a cup-shaped auxiliary dispersing opening 54 supported by a bracket 22 fixed to both rods 21 of the earth 20.

In FIG. 5, unlike the first and second embodiments, the first half of the support 20 is not inserted into the support 20 after completing the epidermal body 10 without using the sealing member. Finish sewing work with the first half inserted.

The use state of the foaming apparatus according to the third embodiment configured as described above will be described with reference to Figs. 6A and 6B.

5 and 6A, the skin 10 is inserted into the mold 60 to be fixed, and the distal end 32 of the injection member 30 is inserted into the coupling hole 13 ′ to disperse the member. 50 is positioned inside the auxiliary dispersing opening 54 in the enclosed state.

In this state, when the foaming liquid is injected into the epidermal body 10 through the injection member 30, the foaming liquid ejected through the distal end portion 32 of the injection member 30 to the inside of the auxiliary dispersion port 54 The foaming liquid supplied to the inside of the auxiliary dispersing opening 54 is discharged to the outside through the opening of the auxiliary dispersing opening 54 in a state where three surfaces are blocked, and then dispersed by the dispersion member 50. In this process, since the foaming liquid has already begun foaming, the foaming liquid in the liquid state does not come into contact with the inner surface of the skin 10.

A cross-sectional view of the headrest according to the third embodiment, in which foaming is completed, is shown in FIG. 6B.

FIG. 7 illustrates a fourth embodiment of the present invention, in which the injection member is longitudinally disposed at the rear end of the bracket 22 fixed to both rods 21 of the support 20 located inside the dispersion member 50. There is a difference from the third embodiment in that the auxiliary dispersing holes 54 of the upright type are formed so as to face the tip portion 32 of the reference numeral 30.

In the use state of the foaming apparatus according to the fourth embodiment configured as described above, as shown in FIG. 8A, the support tool 20 is inserted into the skin 10 and the injection member 30 is inserted into the coupling hole 13 ′. When the tip portion 32 of the () is inserted, the tip portion 32 is in a state where the front is blocked by the auxiliary dispersing holes 54.

In this state, when the foaming liquid is injected into the skin 10 through the injection member 30, the foaming liquid ejected through the tip portion 32 of the injection member 30 is forward by the auxiliary dispersing holes 54. It is blocked by the injection to flow to both sides, and is guided by the dispersion member 50 so that the foam is in contact with the inner surface of the outer skin body 10 is not in contact with the liquid foam. A cross-sectional view of the headrest according to the fourth embodiment in which foaming is completed is shown in FIG. 8B.

As described above, the foaming device of the foamable material according to the present invention is such that the dispersion member provided on the support blocks the foaming liquid for a predetermined time so that the foaming liquid supplied by the injection member does not come into contact with the epidermis in a liquid state. As a result, the foaming liquid penetrates the inner surface of the epidermal body, thereby preventing the defects caused by curing.

In addition, since the blocking member according to the present invention uses a thin film, the manufacturing cost is inexpensive, and since the blocking member is installed in a form in which both sides of the support are wound, there is an effect of simplifying the manufacturing process.

Since the present invention does not penetrate the epidermis, the present invention is particularly suitable for use as the epidermis with a low-density sponge laminated fabric, thereby reducing the cost and reducing the thickness of the cured layer, and the headrest. There is an advantage that the feel of the soften to improve the user's satisfaction.

In the embodiments as described above, the headrest has been described as an example, but the present invention is not limited to the headrest and is applicable to other products within the scope of the technical idea of the present invention.

Figure 1a is an exploded perspective view of the foaming apparatus according to the first embodiment of the present invention.

Figure 1b is a perspective view of the sealing member of the foaming device of Figure 1a.

Figure 2a is a front sectional view showing a state of use of the foaming device of Figure 1a.

Figure 2b is a front sectional view showing the headrest molded by the foaming device of Figure 1a.

Figure 3a is an exploded perspective view of a foaming apparatus according to a second embodiment of the present invention.

Figure 3b is a perspective view of the sealing member of the foaming device of Figure 3a.

Figure 4a is a front sectional view showing a state of use of the foaming device of Figure 3a.

Figure 4b is a front sectional view showing the headrest molded by the foaming device of Figure 3a.

5 is an exploded perspective view of the foaming apparatus according to the third embodiment of the present invention.

Figure 6a is a front sectional view showing a state of use of the foaming apparatus of FIG.

Figure 6b is a front sectional view showing the headrest molded by the foaming device of Figure 5;

7 is an exploded perspective view of the foaming apparatus according to the fourth embodiment of the present invention.

Figure 8a is a front sectional view showing a state of use of the foaming apparatus of FIG.

8B is a front sectional view showing the headrest formed by the foaming apparatus of FIG.

(Explanation of symbols for the main parts of the drawing)

10; Epidermis 11; parenthesis

20; Support 21; Double rod

22; Bracket 30; Injection member

31; Coupling part 32; Tip

40; Sealing member 41; Joiner

42; Through boss 43; Suture

43a; Suture 43b; Suture Groove

50; Dispersion member 54; Auxiliary dispersing sphere

Claims (10)

An injection member for injecting a foam liquid by inserting the tip portion 32 into the interior of the epidermal body 10 through a coupling hole formed in the sealing member 40 for sealing the insertion opening 11 of the epidermal body 10 having air permeability. In the foaming apparatus of the foamable material provided with 30 and the dispersion member 50 for dispersing the foaming liquid is injected into the inside of the skin 10, The dispersion member 50 is made of a thin film material, and is installed in a state in which both side rods 21 of the supporter 20 coupled to the inside of the epidermal body 10 are wound to form a coupling hole of the sealing member 40. Foaming device of a foamable material, characterized in that configured to surround the front end portion 32 of the injection member 30 inserted into the interior of the epidermis (10). delete delete delete The method of claim 1, The sealing member 40 is characterized in that the distal end portion 32 of the injection member 30 is inserted and the auxiliary dispersing opening 54 surrounded by the dispersion member 50 is integrally formed, foaming device of the foamable material . The method of claim 5, wherein The auxiliary dispersing opening (54) is a "c" shaped, characterized in that the opening (54a) is formed, foaming device of a foamable material. The method of claim 5, wherein The auxiliary dispersing opening (54) is characterized in that formed by two upper and lower dispersion pieces, foaming device of a foamable material. The method of claim 1, The support 20 is characterized in that the auxiliary dispersing port 54 is installed to be located inside the dispersion member 50, foaming device of the foam material. The method of claim 8, The auxiliary dispersing opening (54) is characterized in that the cup shape, foaming device of the foamable material. The method of claim 8, The auxiliary dispersing opening (54) is characterized in that it is formed to be upright at the rear end of the bracket (32) to face the front end portion (32) of the injection member (30), foaming device of foam material.