KR20150081683A - Molding apparatus for foamed resin - Google Patents

Abstract

An apparatus for molding a foamed resin is disclosed. The apparatus for molding a foamed resin according to one embodiment of the invention comprises: a mold unit having a mold space for a foamed resin wherein the mold space is formed by a plurality of molds capable of moving with respect to each other so that a foamed resin is supplied and a molded body is formed; a foamed resin supply unit connected to the mold unit and provided to supply a foamed resin to the mold space; a steam supply unit connected to the mold unit so as to supply steam to the mold space; a cooling unit connected to the mold unit and for cooling a molded body molded in the mold space wherein at least one among the plurality of molds has a nozzle capable of increasing a flow rate of steam so that the steam is injected to the mold space; and a steam injection unit capable of injecting steam by being connected to the nozzle and provided with a slit capable of preventing a leak of a foamed resin from the mold space.

Description

[0001] MOLDING APPARATUS FOR FOAMED RESIN [0002]

The present invention relates to a foamed resin molding apparatus, and more particularly, to a foamed resin molding apparatus in which a foamed resin bead is injected into a mold together with air, and then heat is applied to the foamed resin to form the foamed resin.

In general, foaming resins are easy to shape, light in weight, able to absorb impact, and are mainly used as packaging materials for food materials and electronic products. The foaming resin is injected into a mold having a molding space of a package shape, and is made into a desired molded article.

Fig. 10 shows a foamed resin molding apparatus capable of producing a molded body using a foamed resin. This foamed resin molding apparatus is concretely a fixed side die plate 1 to which a back plate 3 and a frame 5 are coupled.

In the frame 5, a recessed die is attached through the center plate 71. [ The back plate 3, the frame 5, the center plate 71, and the concave die 7 together constitute the steam chamber 9.

A raw material-filling machine 11 and an ejector pin 12 are installed in the back plate 3 from the rear side thereof to the steam chamber 9. A cooling water inlet portion 13 and a steam inlet portion 15 are provided on the frame 5 and a cooling water pipe 17 is connected to the cooling water inlet portion 13.

The back plate 4 and the frame 6 are coupled to the movable die plate 2. A protruded die 8 is coupled to the frame 6 through a central plate 81. [ The back plate 4, the frame 5, the center plate 81, and the convex die 8 constitute the steam chamber 10 together.

The frame 6 is provided with a cooling water inlet portion 14 and a steam inlet portion 16 and a cooling water pipe 18 is connected to the cooling water inlet portion 14. The concave die 7 and the convex die 8 are aligned in a single unit to form a cavity 19.

In order to form a molded body by the conventional foamed resin molding apparatus as described above, the raw material composed of the foamed resin is first injected into the cavity 19 by using the raw material filling apparatus 11.

Next, the steam is introduced into the steam chamber 9 from the steam inlet portions 15 and 16 and the steam is supplied through the steam hole (not shown) drilled in the concave die 7 and the convex die 8 Into the cavity (19). The raw material heated by the steam is foamed and formed into a desired molded article. At this time, the dies 7, 8 and the frames 5, 6 are heated to a high temperature of about 120 占 폚.

Thereafter, the cooling water is supplied from the cooling water inlet portions 13 and 14 through the cooling water pipes 17 and 18. Cooling water is sprayed on the back surface of the concave die 7 and the convex die 8 through the nozzles 21 and 22 to cool the formed body 20 in the cavity 19. [ At this time, the dies 7, 8 and the frames 5, 6 are cooled to a low temperature of about 40 占 폚. After the cooling is completed, the concave die 7 and the convex die 8 are separated and opened, and then the molded body 20 is pushed out by using the ejector pin 12.

In such a conventional foamed resin molding apparatus, since the steam supplied to the cavity is supplied through a plurality of vapor holes, the pressure for pushing out air between the foaming resins by the steam is insufficient, and only air in the region where the vapor holes are formed The air was easily displaced by the steam and the substitution action of the air by the steam was not fast in the other areas, so that the air remained in the molded article of the foamed resin molded in the cavity, and the residual air served as a factor for weakening the strength of the molded article.

Korean Patent Application No. 10-2010-0044679

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a foaming resin molding apparatus which can smoothly replace air between foaming resins with steam, And to provide a foamed resin molding apparatus using the same.

According to an aspect of the present invention, a molding space of the foamed resin is provided by a plurality of dies that are relatively moved by a foaming resin so as to form a molded body, and steam is supplied to the inside of the molding space A mold unit; A foamed resin supply unit provided to supply the foamed resin to the molding space and connected to the mold unit; A vapor supply unit connected to the mold unit to supply the vapor to the molding space; And a cooling unit connected to the mold unit to cool the formed body to be formed in the forming space, wherein at least one of the plurality of molds increases the flow rate of the vapor so that the vapor is injected into the molding space And a steam injection unit connected to the nozzle and capable of spraying the steam and having a slit capable of blocking the outflow of the foaming resin from the molding space can be provided .

Wherein the steam injection unit comprises: a steam nozzle block connected to the steam supply unit, wherein the steam nozzle block is provided with the nozzle; And a slit panel member coupled to the steam nozzle block, wherein the slit panel member is provided with slits connected to the nozzle.

The projection shape of the nozzle and the slit may be a mesh shape.

The foamed resin molding apparatus described above is characterized in that the reinforcing core material is detachably arranged in at least one of the plurality of molds so that the reinforcing core material is contained inside the molded body when the molded body is molded, And may further include a core insert unit provided to provide tension.

Wherein the core insert unit comprises: a plurality of pin holders in which the reinforcing core material is removably disposed; And a pressing module coupled to the mold so as to move at least one of the plurality of pin holders to apply tension to the reinforcing core material.

The pressing module includes: a rotating member rotatably coupled to the mold, wherein the pin holder is spaced apart from the rotational center line; And a torsion spring that is disposed on the mold and is coupled to the rotary member, and supports the rotary member in a direction to apply tension to the reinforcing core.

The plurality of pin holders may be disposed in the mold so that the reinforcing core material can be arranged in a plurality of rectangular shapes gradually increasing in area.

Wherein the plurality of dies are fixedly arranged and the core insert unit is disposed; And a movable mold movable to be assembled to the stationary mold, wherein the stationary mold and the movable mold are formed with a molding space in which the slits through which the steam passes are provided; And a steam chamber portion to which the shaping section is coupled and which provides a steam space to which the steam is supplied and in which an inlet and an outlet of the steam to the steam space are provided, And the pin holder is disposed to protrude from a plurality of positions of the molding part coupled to the rotary member, and the reinforcing core material may be disposed to surround the pin holder disposed at a plurality of locations.

Wherein the foam resin supply unit includes a foam resin supply pipe connected to the vapor chamber part of the stationary mold and connected to the forming part, wherein a venturi is disposed in a flow path of the foam resin; A storage container of a foamed resin connected to the foam resin supply pipe so that the foam resin passes through the venturi; And a compressor to provide the venturi pressurized air such that the foaming resin is introduced into the molding space by the venturi.

The venturi may be provided with a venturi hole through which the pressurized air flows downstream to increase the flow rate of the foaming resin passing through the venturi.

Further comprising an ejector unit disposed on the fixed mold so as to be able to move up and down so as to eject the molded body from the molding space when the movable mold is separated from the fixed mold, A steam pipe connected to an inlet and an outlet side of each of the steam chamber portions of the steam pipe; And a steam valve capable of selectively opening and closing the steam pipe connected to the steam chamber part of the stationary mold and the movable mold, wherein the cooling unit includes a cooling water pipe embedded in the steam chamber part and injecting cooling water; A plurality of cooling water supply pipes connected to the cooling water pipe; And an opening / closing valve for selectively opening and closing the plurality of cooling water supply pipes.

According to the present invention, there is provided a foamed resin molding apparatus in which the action of replacing the air between foamed resins with steam is smooth, and air between the foamed resins can be almost removed at the time of forming the molded article, .

1 is a cross-sectional view of a foamed resin molding apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of the forming part of the stationary mold and the movable mold of FIG. 1;
3 is a plan view showing a slit arrangement with respect to the forming portion of FIG.
4 is a perspective view of the stationary mold of FIG.
Fig. 5 is an arrangement cross-sectional view of the core insert unit for the stationary mold of Fig. 4;
FIG. 6 is a diagram showing a state of supplying steam to the mold unit of FIG. 1. FIG.
7 is a cooling state view of the mold unit of FIG.
8 is a state in which the molded body is separated from the mold unit of Fig.
9 is a perspective view of the molded body of Fig.
10 is a cross-sectional view of a molding apparatus of a conventional foamed resin.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a cross-sectional view of a foamed resin molding apparatus according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view of a molding part of a stationary mold and a movable mold of FIG. 1, Fig. 5 is a sectional view of the core insert unit for the stationary mold of Fig. 4, and Fig. 6 is a cross-sectional view of the mold unit of Fig. Fig. 7 is a cooling state diagram of the mold unit of Fig. 1, Fig. 8 is a state in which the molded body is separated from the mold unit of Fig. 1, and Fig. 9 is a perspective view of the molded body of Fig. 1, 2, 6, and 7, the core insert unit and the reinforcement core are not shown for convenience of understanding.

1 to 3, a foamed resin molding apparatus according to an embodiment of the present invention includes a plurality of molds 101 (a) to 101 A mold unit 100 provided with a molding space 112 for the foaming resin f by means of the molding space 112 and provided so that steam can be supplied into the molding space 112; A vapor supply unit 150 connected to the mold unit 100 to supply the vapor to the molding space 112, and a mold supply unit 150 connected to the mold unit 100. [ And a cooling unit 160 connected to the mold unit 100 to cool the molded body m to be molded in the space 112. [

 At least one of the plurality of dies 101 is provided with a nozzle 104 for increasing the flow velocity of the vapor so that the vapor is injected into the molding space 112 and connected to the nozzle 104 to inject the vapor. And a steam injection unit 102 provided with a slit 106 capable of blocking the outflow of the foaming resin (f) from the molding space 112.

According to the steam injection unit 102 according to the present embodiment, the steam supplied to the steam supply unit 150 is firstly accelerated by the nozzle 104 and flows into the slit 106. The steam can be secondarily accelerated to be strongly injected into the molding space 112 from the slit 106 provided narrower than the nozzle 104, and the air between the foaming resins can be smoothly replaced with steam.

The steam injection unit 102 according to this embodiment includes a steam nozzle block 103 connected to the steam supply unit 150 and provided with a nozzle 104, And a slit panel member 105 provided with a slit 9106 connected to the slit panel member 104.

At this time, not only can the vapor nozzle block 103 support the thin plate-shaped slit panel member 105 which is substantially in contact with the foaming resin f to receive the internal pressure so that the molding space 112 is maintained, (104) may be formed to provide high-pressure accelerated vapor to the slit panel member (105) side.

In addition, the slit panel member 105 can be configured such that the fine slits 106 are arranged in a mesh-like manner as described below so that the steam is evenly supplied into the molding space 112, It is possible to provide a processable thickness. That is, the nozzle 104 and the slit 106 may have a mesh-like projection shape with respect to the plane. The slit 106 of the slit panel member 105 can be formed by micro laser processing.

That is, the steam nozzle block 103 and the slit panel member 105 can constitute the stationary mold 107 and the movable mold 108 as described later. Although not shown on the outside of the steam nozzle block 103, a base mold may be disposed to support the steam nozzle block 103.

With reference to Figs. 1 and 3 to 8, in relation to the fixed mold 107 and the movable mold 108 constituting the vapor nozzle block 103 and the slit panel member 105 according to the present embodiment, (f) of the foamed resin molding apparatus according to the present invention will be described in detail.

First, the foamed resin molding apparatus according to the present embodiment is characterized in that the foamed resin molding apparatus according to the present embodiment is provided with at least one of the plurality of molds 101, wherein the reinforcing core material r is embedded in the molded body m at the time of molding the molded body m The core insert r may be detachably disposed and may be provided with a core insert unit 120 provided to provide tension to the reinforcing core r.

The foamed resin molding apparatus according to this embodiment is characterized in that the molded core m is molded by disposing the reinforcing core r in the molding space 112 of the mold unit 100, (m).

That is, the molded article (m) of the panel shape produced only by the foamed resin (f) has a limited use because of its strength limit as compared with the light weight advantage. However, the molded article (m) in which the reinforcing core material (r) The strength can be reinforced and used sufficiently to support a table or a relatively heavy object.

The formed body m according to the present embodiment assumes mainly a panel shape and the reinforced core r is disposed in correspondence with the main region receiving the bending stress of the molded body m so that the molded body m has a reinforced structure . Also, the reinforcing core material r is not limited to a structure that can be easily tied and fixed to a plurality of pin holders 121, such as a string, such as a string, and can be easily bent, Or a non-metallic composite material may be used. Further, the foaming resin (f) is assumed to be beads of granules or particles formed by foaming the resin.

That is, the foaming resin (f) is a granule or a particle-shaped bead formed by foaming the resin. As the foaming resin (f), expanded polypropylene (EPP) can be used. EPP is a foam of white polypropylene which is generally white, has a closed cell structure, is lightweight, has a high impact resistance against external impact, is excellent in chemical resistance and heat resistance, and specifically, It can be realized as a product having various densities and compressive strengths.

First, referring to FIGS. 1 and 6, a description will be given of a mold unit 100 according to the present embodiment. A plurality of molds 101 of the mold unit 100 are fixed on the ground and include a stationary mold 107 in which the core insert unit 120 is disposed and a stationary mold 107 in which movable molds Lt; RTI ID = 0.0 > 108 < / RTI >

The stationary mold 107 and the movable mold 108 are formed with a molding space 111 and a slit 106 through which the vapor passes, And a steam chamber portion 115 provided with an inlet and an outlet of steam for the steam space, which provides a steam space to which steam is supplied. The forming part 111 of the stationary mold 107 and the movable mold 108 according to the present embodiment may be formed of molds appropriately arranged according to the shape of the molding m.

The molding portion 111 of the movable mold 108 is pressed against the molding die 111 of the stationary mold 107 while the molding portion 111 of the stationary mold 107 and the molding portion 111 of the movable mold 108 are disposed opposite to each other. The molding space 112 of the formed body m is formed in the molding part 111 by being moved toward the side of the mold part 111 and merged with the molded parts 111. The foamed resin f Is filled to produce a molded body m.

The steam introduced into the steam chamber part 115 flows through the nozzle 104 and the slit 106 which can be arranged in a lattice form as described above The foamed resin (f) is heated and further inflated, and the foamed resin (f) is injected into the molding part 111, f are expanded and tightly bonded by mutual fusion. Thus, the clearance between the foamed resin (f) is removed, and the strength of the molded article (m) produced from the foamed resin (f) can be improved.

The reinforcing core material r may be disposed on the stationary mold 107 side molding portion 111 by the core insert unit 120 before the foaming resin f is filled in the molding portion 111. [

1, 4 and 5, a core insert unit 120 for arranging the reinforcing core material r in the mold unit 100 includes a plurality of pins (not shown) A holder 121 and a pressing module 122 coupled to the mold so as to apply tension to the reinforcing core material r by moving at least one of the plurality of pin holders 121. [

The plurality of pin holders 121 according to the present embodiment are all coupled to the pressing module 122. That is, all the pin holders 121 can provide tension to the reinforcing core material r by the pressing module 122.

The pressing module 122 includes a rotary member 124 rotatably coupled to the mold and disposed in the forming portion 111 of the stationary mold 107 and having the pin holder 121 separated from the rotation center line, A torsion spring 125 which is disposed in the molding part 111 of the stationary mold 107 and is coupled to the rotary member 124 and supports the rotary member 124 in a direction in which tension can be applied to the reinforcing core material r, . ≪ / RTI >

According to the present embodiment, the plurality of rotary members 124 are supported by the torsion springs 125 so as to be arranged as wide as possible.

That is, when the pin holder 121 is arranged in a rectangular shape as described later, the four pin holders 121 before the reinforcing core material r is wound are supported by the torsion springs 125 as wide as possible, The reinforcing core material r may be pressed by the reinforcing core material r to narrow the area of the rectangular shape when the reinforcing core material r is wound around the pin holder 121 to be rectangular So that it can be disposed in the forming part 111 of the stationary mold 107 in a taut state by being pressed by the pin holder 121 supported by the stationary mold 107 and receiving the tensile force.

At this time, the reinforcing core material r is disposed on the pin holder 121 so as to be spaced apart from the bottom surface of the molding part 111 so as to be disposed at the intermediate position of the formed body m.

The plurality of pin holders 121 according to this embodiment can be disposed in the mold so that the reinforcing core material r can be arranged in a plurality of rectangular shapes gradually increasing in area. That is, the pin holder 121 may be arranged such that the area thereof is enlarged by four or more.

At this time, the reinforcing core material r may be bundled and arranged in four pin holders 121 arranged in a square shape. Although not shown, the pin holder 121 indicates a position where the reinforcing core material r is tied, and a round groove capable of restricting the movement of the reinforcing core material r may be formed. These round grooves are provided so as to have such a depth that the reinforcing core material r can be smoothly released when the molded body m is injected from the molding portion 111. [

The arrangement of the pin holders 121 is described as a rectangular shape which is gradually enlarged in the present embodiment, but the present invention is not limited thereto, and it is possible to arrange the pin holder 121 in a layout corresponding to the distribution of stresses that can be applied to the formed body m.

The rotating member 124 that enables the rotational movement of the pin holder 121 may be embedded in the forming part 111 together with the torsion spring 125. That is, the pin holder 121 is coupled to the rotary member 124 disposed at a plurality of places and is disposed so as to protrude from a plurality of places of the molding part 111. The reinforcing core material r is provided at a plurality of places, As shown in FIG.

The torsion spring 125 according to the present embodiment is schematically shown but one end is connected to the rotation axis of the rotation member 124 and the other end is coupled to the molding part 111 to rotate the rotation member 124 The exercise can be resiliently inhibited.

1, the foamed resin supply unit 140 capable of filling the foamed resin (f) into the molded part 111 of the stationary mold 107 and the movable mold 108 according to the present embodiment, A foam resin supply pipe 141 connected to the vapor chamber part 115 of the stationary mold 107 and connected to the forming part 111 and having venturi 142 disposed in the flow path of the foaming resin f, The storage container 145 of the foamed resin f connected to the foamed resin supply pipe 141 so that the resin f passes through the venturi 142 and the foamed resin f formed by the foamed resin f, And a compressor 146 that provides pressurized air to the venturi 142 to flow into the venturi 112.

In this foamed resin supply unit 140, the air pressurized by the compressor 146 is supplied to the foamed resin supply pipe 141 and passes through the venturi 142. At this time, in principle, the venturi 142 generates a vacuum pressure due to a pressure drop from the inlet side of the venturi 142 toward the outlet side. By this vacuum pressure, the foaming resin (f) The resin (f) may flow into the forming part 111 together with the air passing through the venturi 142.

The venturi 142 may be provided with venturi holes 147 through which the pressurized air flows downstream to increase the flow rate of the foaming resin f passing through the venturi 142.

A flow path is provided between the foamed resin supply pipe 141 and the venturi 142 so that pressurized air flows from the compressor 146 and flows into the venturi hole 147. The pressurized air is supplied to the venturi hole 147 And flows through the venturi 142 to press the foaming resin f in the form of granules whose flow velocity has been lowered to increase the flow rate toward the forming part 111 side.

1 and 6, the steam supply unit 150 according to the present embodiment is connected to the inlet and outlet sides of the steam chamber part 115 of each of the stationary mold 107 and the movable mold 108 And a steam valve 152 for selectively opening and closing the steam pipe 151 and the steam pipe 151 connected to the steam chamber part 115 of the stationary mold 107 and the movable mold 108. [

The steam supply unit 150 is connected to the stationary mold 107 and the movable mold 108 so as to supply steam to the steam supply pipe 150. A steam valve 152 is installed in the steam pipe 151.

For example, both the steam valve 152 and the movable mold 107 may be opened so that the steam passes through the stationary mold 106 and the movable mold 107, respectively. When the steam outlet side opening and closing valve 165 of the movable mold 107 is closed, the steam introduced into the movable mold 107 can be discharged to the outlet side of the stationary mold 106 through the molding part 111, The opposite vapor flow is also possible.

At this time, the stationary mold 106 and the movable mold 107 can be heated to a high temperature of about 120 캜 by the steam. Some of the steam may flow into the molding space 112 formed by the combination of the stationary mold 106 and the movable mold 107 to directly heat the foamed resin f.

That is, the steam can flow into the molding part 111 through the fixed mold 106 and the slits 106 of the movable mold 107 to heat and expand the charged foam resin f, The foaming resin (f) is bonded by heating and pressing, and the contact surfaces are mutually fused to each other in a rigid structure. That is, the surface of the foamed resin (f) is melted by the steam, the inner foaming agent expands and the air between the foaming resin (f) is removed, and at the same time, the foaming resin (f)

The foamed resin f foamed and joined in the molding part 111 is formed as a molded product m in the molding part 111. [ After the molded part 111 heated by the steam is cooled, the molded part m is separated from the molded part 111 by the ejector unit 170, which will be described later, after the movable mold 107 is separated from the fixed mold 106. [ Lt; / RTI >

That is, when the molding of the foamed resin (f) is completed, the pressure of the foamed foam in the molding space 112 is lowered to prevent further deformation by the foaming agent remaining in the foamed resin (f) A cooling process for cooling the heat exchanger 107 is performed.

This cooling is performed by a direct cooling method in which cooling water is directly injected into each of the stationary mold 106 and the movable mold 107 through the cooling unit 160 as described later or a direct cooling method in which the pressure in the molding part 111 The indirect cooling method can be considered.

1 and 7, the cooling unit 160 according to the present embodiment for cooling the molding part 111 of the stationary mold 107 and the movable mold 108 is built in the steam chamber part 115 A plurality of cooling water supply pipes 163 connected to the cooling water pipe 161 and an opening and closing valve 165 selectively opening and closing the plurality of cooling water supply pipes 163, .

That is, since the cooling water pipe 161 according to the present embodiment is connected to the plurality of cooling water supply pipes 163, the cooling water supplied through the cooling water supply pipe 163 can be selectively used according to the opening and closing of the opening and closing valve 165.

The cooling water finally cools the molded body m. The steam between the foaming resins f can further shrink the gap that may exist between the foaming resins f to the condensation phenomenon, so that the foaming resin f ) Can have a dense and improved structure.

Referring to Figs. 1 and 8, the above-described foamed resin molding machine according to the present embodiment is arranged so as to be able to move up and down on a stationary mold 107. When the movable mold 108 is separated from the stationary mold 107, And an ejector unit 170 for ejecting the molded body m from the ejector unit 112.

The ejector unit 170 is lifted from the bottom surface of the molding part 111 to move the molded article m in the molding part 111 The rotor 111 can be detached from the forming part 111 of the stationary mold 107. [

As described above, in the foamed resin molding apparatus according to the present embodiment, the molded article of the foamed resin can be separated from the molded section 111 by the ejector unit 170 to produce a final molded article in the form of a panel.

9, since the reinforcing core material r having a string structure can be embedded in the inside of the panel shape during the molding process of the foamed resin, It is possible to provide the advantage that the reinforcing core material r can be produced by stretching the reinforcing core material r by providing elastic tension to the reinforcing core material r when the reinforcing core material r is applied to the core insert unit 120 of the mold unit. The reinforcing core material r has a structure capable of reinforcing the bending stress when a load is applied to the formed body m.

The molded body m manufactured as shown in Fig. 9 by the foamed resin molding apparatus as described above can be formed with lattice-shaped protruding lines by the slit 106 not shown, but with the lattice- (r) may be provided as an inherent foamed resin panel.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

f: foaming resin m: molded article
r: reinforcement core 100: mold unit
101: a plurality of dies 102: a steam injection unit
103: Steam nozzle block 104: Nozzle
105: Slit panel member 106: Slit
107: stationary mold 108: movable mold
111: forming part 112: forming space
115: steam chamber part 120: core insert unit
121: pin holder 122: pressure module
124: rotating member 125: torsion spring
140: foaming resin supply unit 141: foaming resin supply pipe
142: Venturi 145: Storage container
146: Compressor 147: Venturi Hall
150: steam supply unit 151: steam piping
152: Steam valve 160: Cooling unit
161: cooling water pipe 163: cooling water supply pipe
165: opening / closing valve 170: ejector unit

Claims (11)

A mold unit provided with a molding space for the foamed resin by a plurality of dies which are relatively moved so that a foamed resin is supplied to form a molded body so that steam can be supplied into the molding space;
A foamed resin supply unit provided to supply the foamed resin to the molding space and connected to the mold unit;
A vapor supply unit connected to the mold unit to supply the vapor to the molding space; And
And a cooling unit connected to the mold unit to cool the molding body to be molded in the molding space,
Wherein at least one of the plurality of dies is provided with a nozzle for increasing a flow rate of the vapor so that the vapor is injected into the molding space, And a steam injection unit provided with a slit capable of blocking the outflow of the foamed resin. The method according to claim 1,
The steam injection unit includes:
A steam nozzle block connected to the steam supply unit, wherein the steam nozzle block is provided with the nozzle; And
And a slit panel member coupled to the steam nozzle block, wherein the slit panel member is provided with a slit connected to the nozzle. 3. The method of claim 2,
Wherein the projection shape of the nozzle and the slit is a mesh shape. The method according to claim 1,
Wherein the reinforcing core material is detachably disposed on at least one of the plurality of dies so that the reinforcing core material is contained inside the molded body at the time of molding the molded body and is provided so as to provide tension to the reinforcing core material Further comprising a core insert unit. 5. The method of claim 4,
The core insert unit comprises:
A plurality of pin holders in which the reinforcing core is detachably disposed; And
And a pressing module coupled to the mold so as to move at least one of the plurality of pin holders to apply tension to the reinforcing core material. 6. The method of claim 5,
The pressing module includes:
A rotatable member rotatably coupled to the mold, the pin holder being spaced apart from the rotational center line; And
And a torsion spring disposed in the mold and coupled to the rotatable member, the torsion spring supporting the rotatable member in a direction to apply tension to the reinforcing core. The method according to claim 6,
Wherein the plurality of pin holders are disposed in the mold so that the reinforcing core material can be arranged in a plurality of rectangular shapes gradually increasing in area. 5. The method of claim 4,
Wherein the plurality of molds comprises:
A stationary die to which the core insert unit is fixed, And
And a movable mold movable to be fitted to the stationary mold,
Wherein the stationary mold and the movable mold,
A molding part in which the molding space is formed and slits through which the steam passes are provided; And
Wherein the forming section includes a vapor chamber section to which the vapor is supplied, the vapor chamber section being provided with an inlet and an outlet of the vapor to the vapor space,
The rotating member is embedded in the forming part together with the torsion spring,
Wherein the pin holder is disposed to protrude from a plurality of positions of the molding unit,
Wherein the reinforcing core material is arranged so as to surround the pin holders disposed at a plurality of locations. 9. The method of claim 8,
The foamed resin supply unit includes:
A foaming resin supply pipe connected to the vapor chamber part of the stationary mold and connected to the forming part, wherein a venturi is disposed in a flow path of the foaming resin;
A storage container of a foamed resin connected to the foam resin supply pipe so that the foam resin passes through the venturi; And
And a compressor for providing the venturi-pressurized air so that the foaming resin is introduced into the molding space by the venturi. 10. The method of claim 9,
Wherein the venturi is provided with a venturi hole through which the pressurized air flows downstream to increase the flow rate of the foaming resin passing through the venturi. 9. The method of claim 8,
Further comprising an ejector unit arranged to be able to move up and down on the stationary mold and to eject the molded body from the molding space when the movable mold is separated from the stationary mold,
The steam supply unit includes:
A steam pipe connected to an inlet and an outlet of each of the steam chamber portions of the stationary mold and the movable mold; And
And a steam valve capable of selectively opening and closing the steam pipe connected to the steam chamber part of the stationary mold and the movable mold,
The cooling unit includes:
A cooling water pipe built in the steam chamber part and injecting cooling water;
A plurality of cooling water supply pipes connected to the cooling water pipe; And
And an opening / closing valve for selectively opening and closing the plurality of cooling water supply pipes.

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