KR20160095717A

KR20160095717A - Mold manufacturing method for finishing sheet molding

Info

Publication number: KR20160095717A
Application number: KR1020150016976A
Authority: KR
Inventors: 성기문; 원만재; 박영민; 이경호
Original assignee: 주식회사 몰텍스
Priority date: 2015-02-03
Filing date: 2015-02-03
Publication date: 2016-08-12

Abstract

The present invention discloses a method of manufacturing a mold for molding a finished sheet. The disclosed method for manufacturing a mold for molding a finish sheet includes a surface material joining step of joining a texturing material having a specific texture to a wooden material, a surface mold forming step of forming a first foam material by laminating a first material on a surface of the texturing material, A surface pattern inversion forming step of forming a second foam member for inverting the pattern of the first foam member by laminating a second material on the first foam member and a surface pattern inversion molding step for forming a second foam member on the surface of the second foam member by an electro- And the step of forming the metal mask in which the surface pattern of the second foam member is formed is formed, is carried out.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing a mold for forming a finishing sheet,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a mold for molding a finished sheet, and more particularly, to a method for manufacturing a mold for molding a finished sheet, which can accurately and naturally express a texture such as leather texture and sewing (STITCH).

Generally, the electric pole product refers to a product obtained by electrodepositing a metal such as nickel (Ni), chromium (Cr), or copper (Cu) to a model plate subjected to electroforming, When the electrodeposited metal is separated from the model plate to obtain a product having the irregular surface opposite to the surface of the model plate or by separating the metal by electrodeposition on the electrodeposited metal surface again, And the like. Such electroforming is widely used for molds for record plates, molds for plastics, reflectors, and the like.

In recent years, molds produced by electric pole machining have been widely used for molding finishing panels used as automotive interior materials.

For example, in the manufacture of automotive interiors, poles are used to form instrument panels, glove boxes, consoles, bottom covers, fillers, door built-in panels, airbag cover panels, etc., into high quality surface skin materials.

Normally, products such as automobile interior materials are foamed between a hard core made of a plastic material and a soft skin made of a leather or a cloth material that gives a luxurious and soft image, And is in the trend of being manufactured as a foamed product having a triple structure of a core layer, a polyurethane foam layer and a skin layer.

In recent years, a method of manufacturing an instrument panel for realizing the texture of leather with plastic in order to reduce the manufacturing cost has been carried out. Such a manufacturing method is easy to manufacture because it uses a metal mold.

However, the mold for realizing the above-mentioned conventional leather texture has a problem that the texture of the leather is not well visible, and in particular, the texture expression like stitches can not be realized.

Therefore, there is a need to improve this.

On the other hand, Korean Patent Laid-Open Publication No. 10-2002-0085567 (published on November 16, 2002) discloses "a metal plate for embossing treatment and a method for manufacturing the same, " and Korean Patent Publication No. 10-2013-0000232 Published on Jan. 2, 2013) discloses a "die apparatus in which a leather pattern is formed."

It is an object of the present invention to provide a method of manufacturing a mold for molding a finish sheet, which is capable of accurately and naturally expressing a texture such as leather texture and sewing (STITCH).

According to an aspect of the present invention, there is provided a method of manufacturing a mold for molding a finishing sheet according to the present invention, comprising the steps of: joining a texturing member having a specific texture to a wooden mold; A surface mold forming step of forming a first foam member for forming a surface pattern of the texture expressing member by laminating a first material on a surface of the texture expressing member; A surface pattern inversion forming step of forming a second foam member for laminating a second material on the first foam member to invert the pattern of the first foam member; And an electroforming step of electroforming a third material on the surface of the second foam member using an electroforming method and then separating the electroforming material to form a mask in which the surface pattern of the second foam member is modeled .

The method for manufacturing a mold for molding a finished sheet is characterized in that the first material, the second material, and the third material are made of materials having different properties.

Further, in the surface mold forming step, silicon is used as the first material.

Further, in the reverse molding step, an epoxy is used as the second material.

Further, in the electroforming step, the metal is used as the third material.

Also, in the surface material bonding step, any one of leather fabric, artificial leather, and PVC fabric is used as the texture expression member, and the leather fabric is sewed to form a stitch portion.

In addition, in the surface material joining step, a stitch seating part is formed so that the stitch part is seated on the wood.

Further, in the surface mold forming step, the texture expressing member including a first stitch portion sewn to join the two leather fabrics and a second stitch portion sewn to be spaced apart from both sides of the first stitch portion are used Do.

In addition, in the surface bonding step, the first seating groove portion into which the first stitch portion is inserted and the second seating groove portion into which the second stitch portion is inserted are used.

In the surface material bonding step, a first protruding portion and a second protruding portion are formed on both sides of the first seating groove portion so as to protrude between the first stitch portion and the second stitch portion of the texture expressing member, And the like.

Further, in the surface mold forming step, after the first material is applied to the texture expressing member, the wooden mold is inserted into the mold and the first material is injected to form the first foam member.

As described above, according to the method for manufacturing a mold for forming a finishing sheet according to the present invention, a mold mask is manufactured using a leather fabric which is different from the prior art in order to realize a texture, so that a mold mask, The same texture can be expressed precisely and naturally.

Further, according to the method for manufacturing a mold for molding a finished sheet according to the present invention, the mold material used for manufacturing the mold in each step is made of a material having a different property, so that the effect of facilitating demoulding and releasing can be obtained have.

1 is a flowchart for explaining a method of manufacturing a mold for molding a finished sheet according to the first embodiment of the present invention.
2 is a process diagram for explaining a method of manufacturing a mold for molding a finished sheet according to the first embodiment of the present invention.
FIG. 3 is a perspective view showing a wood and a texture rendering member according to a first embodiment of the present invention. FIG.
4 is a process diagram for explaining a method of manufacturing a mold for molding a finished sheet according to the second embodiment of the present invention.
FIG. 5 is a perspective view illustrating a wood and a texture rendering member according to a second embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of a method of manufacturing a mold for molding a closed sheet according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Fig. 1 is a flow chart for explaining a method of manufacturing a mold for molding a finishing sheet according to the first embodiment of the present invention, Fig. 2 is a process diagram for explaining a method for manufacturing a mold for molding a finishing sheet according to the first embodiment of the present invention And FIG. 3 is a perspective view showing a wooden form and a textured representation member according to a first embodiment of the present invention.

4 is a process diagram illustrating a method of manufacturing a mold for molding a closed sheet according to a second embodiment of the present invention, and FIG. 5 is a perspective view showing a wooden structure and a texture rendering member according to a second embodiment of the present invention.

First, a method of manufacturing a mold for molding a finished sheet according to the first embodiment of the present invention will be described with reference to Figs. 1 to 3. Fig.

1 to 3, a method for manufacturing a mold for molding a finishing sheet according to a first embodiment of the present invention includes a surface joining step S10 of coupling a texturing member 120 to a wooden mold 110, (S20) of forming a first foam member (130) on the texture rendering member (120) using a first material, and a second molding step (S20) of forming a second foam member A surface pattern inversion forming step S30 for forming a member 140 and a preform forming step S40 for forming a metal mask 150 using the second foam member 140. [

Since the metal mask 150 is formed by using the texturing member 120 to express a specific texture, the method for manufacturing the metal mold for molding a finishing sheet according to the present embodiment is more accurate Can be accurately formed.

In the surface material joining step (S10), the wooden mold 110 and the texture expression member 120, which are manufactured based on the shape and dimensions of the injection-molded product, are used. In the surface material joining step (S10) according to the present embodiment, the leather fabric is used as the texture rendering member 120, and the stitch portion 120a is formed by sewing the leather fabric. In this embodiment, the use of the leather fabric as the texturing member 120 is described as an example, but artificial leather, PVC fabric, or the like may be used as the texturing member 120 according to the user's needs.

In the surface material joining step (S10), a wooden tool 110 is manufactured using a work tool, and a texture expression member 120 formed by a leather fabric is coupled to the wooden tool 110. At this time, a stitch seating portion 111 for seating the stitch portion 120a of the texture rendering member 120 is formed on the wooden frame 110. [

The coupling of the texture rendering member 120 directly to the wooden frame 110 is performed in order to precisely and accurately realize the curvature and shape of the stitch portion 120a formed in the texture rendering member 120. [

In the surface material joining step S10, the stitch portion 120a is divided into the first stitch portion 121 and the second stitch portion 123 (see FIG. 1) so that the pattern of the stitch portion 120a of the texture rendering member 120 can be more precisely and accurately realized. ).

Specifically, in the surface joining step S10, a first stitch portion 121 integrally fixing two leather fabrics, which are materials of the texture expressing member 120, through sewing; The second stitch portion 123 is formed by sewing so as to be spaced apart from the stitch portion 123. [ Here, the first stitch portion 121 is formed to further enhance the three-dimensional effect of the stitch portion 120a of the texture expressing member 120. The second stitch portion 123 is formed in order to realize the surface texture of the connection portion of the texture rendering member 120 more similar to the actual texture.

In order to minimize the amount of displacement of the stitch portion 120a when the surface mold forming step S20 forming the first foam member 130 is performed, the stitch supporting member 125 Is integrally fixed to the texture expressing member 120 through the second stitch portion 123. At this time, the auxiliary supporting portion 127 for folding the end portion of the texture expressing member 120 to be sewn through the first stitch portion 121 downward to reinforce the thickness of the stitch supporting member 125 is formed. The auxiliary supporting portion 127 is sewn together with the texture expressing member 120 and the stitch supporting member 125 when the second stitch portion 123 is formed and is stitched together with the stitch portion 120a and the stitch supporting member 125, And is inserted into the seat portion 111. [

When the surface material joining step (S10) for joining the texturing member 120 to the wooden mold 110 is completed, the first material is laminated on the surface of the texture rendering member 120 to form the first foam member 130 (S20). &Lt; / RTI >

In the surface mold forming step S20, the surface pattern of the texture rendering member 120 is formed on the first foam member 130 formed by the first material. Specifically, in the surface mold forming step S20, the first material is applied to the surface of the texture expressing member 120, and then the wooden mold 110 coated with the first material is inserted into the mold. Then, the first material is injected onto the first material applied to the surface of the texture expressing member 120 to form the first foam member 130. Thereafter, the wooden mold 110 is taken out of the mold and the first foam member 130 is separated from the texture rendering member 120.

For example, in the surface mold forming step S20 according to the present embodiment, a material applying step of applying a first material to the surface of the texture expressing member 120 and a second applying step of coating the first material A material laminating process for further laminating the first material, and a demoulding process for demolding the texturing member 120 after curing the laminated first material.

At this time, after the first material is applied to the surface of the texture expressing member 120, the first material is laminated on the surface of the texture expressing member 120 so that the first material is completely filled in the depressed portion of the texture expressing member 120, So that the surface pattern of the member 120 can be more precisely and clearly realized.

In the surface mold forming step S20 according to the present embodiment, silicon is used as the first material. This is to minimize the shrinkage or strain when the first foam member 130 is cured, and to prevent the first foam member 130 from being damaged by an external force during handling such as demolding or transportation. In addition, in the surface mold forming step S20, the thickness of the first foam member 130 may be 10 to 15 mm. Then, the first foam member 130 is cured by standing at room temperature for about 24 to 48 hours.

When the surface pattern of the texture expressing member 120 is viewed on the second foam member 140 by performing the surface mold forming step S20 as described above, the second foam member 140 is exposed to the surface of the texture expressing member 120 The same pattern as the pattern is formed.

Thereafter, in the surface pattern inversion molding step S30, a second foam member 140 (see FIG. 1) 140 is formed by laminating a second material on the first foam member 130 demolded from the mold and inverting the surface pattern of the first foam member 130 ). In the surface pattern inversion forming step S30 according to this embodiment, a second material having a property different from that of the first material is used. This is to facilitate demoulding without using a separate demolding material when demolding the first and second foam members 130 and 140.

In the surface pattern reversal molding step (S30), epoxy may be used as the second material.

After the formation of the second foam member 140 is completed through the surface pattern inversion molding step S30, a preform forming step S40 for forming the metal mask 150 by stacking a third material on the second foam member 140 ).

In the electroforming step S40 according to the present embodiment, the metal is used as the third material. This is for mass-producing a synthetic resin finish sheet through a metal mold 150 using a metal mold.

Specifically, in the electroforming step (S40) according to the present embodiment, electroplating is performed on the surface of the second foam member 140 to electrodeposit (electroform) nickel as a third material. The second foam member 140 and the metal mask 150 are separated from each other to produce a metal mask 150 for forming a finished sheet.

Next, with reference to Figs. 4 and 5, a method of manufacturing a mold for molding a finished sheet according to a second embodiment of the present invention will be described.

FIG. 4 is a process diagram illustrating a method for manufacturing a mold for molding a closed sheet according to a second embodiment of the present invention, and FIG. 5 is a perspective view illustrating a wooden structure and a texture rendering member according to a second embodiment of the present invention.

In describing the method of manufacturing a mold for molding a closed sheet according to the second embodiment of the present invention, the same reference numerals are used for the same parts as the method for manufacturing the mold for forming a closed sheet according to the first embodiment, .

4 and 5, the method for manufacturing a mold for forming a finishing sheet according to the second embodiment includes a surface bonding step S10 ', a surface mold forming step S20, a surface pattern inversion molding step S30, The electric pole forming step S40 is performed.

The surface material joining step S11 according to the second embodiment not only simplifies the structure of the texture rendering member 170 but also allows the deformation of the texture rendering member 170 when the first material is laminated in the surface mold forming step S20 The wooden frame 160 and the texture rendering member 170 which can completely prevent the use of the texture 160 are used.

Specifically, in the surface material joining step S11 according to the second embodiment, the stitch supporting member 125 and the auxiliary supporting member 127 are not formed on the texture rendering member 170, The first stitch portion 171 and the second stitch portion 173 are formed.

In the surface-material joining step S11 according to the second embodiment, the first seat groove portion 161 in which the first stitch portion 171 is inserted into the wooden mold 160 and the first seat groove portion 161 in which the second stitch portion 173 is inserted Two seating grooves 163 are formed. At this time, the second seating groove part 163 is formed on both sides of the first seating groove part 161.

Particularly, in the superficial material bonding step S11 according to the second embodiment, the wooden frame 160 is formed to support the first stitch portion 171 and the second stitch portion 173 with a higher gradient. To this end, the wooden frame 160 according to the second embodiment is provided with a first protrusion 165 and a second protrusion 165 so as to protrude between the first stitch portion 171 and the second stitch portion 173 of the texture rendering member 170, Two projecting portions 173 are formed. At this time, the first and second protrusions 165 and 167 protrude from both sides of the first seating groove 171. Thus, the three-dimensional feeling of the first stitch portion 171 and the second stitch portion 173 can be further improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the claims.

110, < / RTI > 160 <
120a: stitch portion 121, 171: first stitch portion
123, 173: second stitch portion 123: stitch supporting member
127: auxiliary supporting portion 130: first foam member
140: second foam member 150: metal mask

Claims

A surface material joining step of joining a texture expression member having a specific texture to a wooden pattern;
A surface mold forming step of forming a first foam member by laminating a first material on a surface of the texture expressing member;
A surface pattern inversion forming step of laminating a second material on the first foam member to form a second foam member formed by inverting the pattern of the first foam member; And
Forming a metal mask on the surface of the second foam member by electrodeposition of the third material using the electroplating method and then separating the surface of the second foam member to form a metal mask on which the surface pattern of the second foam member is imitated;
And forming a mold on the mold.

The method according to claim 1,
Wherein the first material, the second material, and the third material are materials of different properties.

3. The method according to claim 1 or 2,
Wherein the surface mold forming step uses silicon as the first material.

3. The method according to claim 1 or 2,
And the epoxy resin is used as the second material in the reverse molding step.

3. The method according to claim 1 or 2,
And a metal is used as the third material in the electroforming step.

The method according to claim 1,
In the surface material joining step, any one of a leather fabric, an artificial marginal portion and a PVC fabric is used as the texture expression member, the stitch portion is formed by sewing the texture expression member, and the stitch seating portion is formed so that the stitch portion is seated on the wooden And a mold for forming a mold for forming a finished sheet.

The method according to claim 6,
Wherein the stitch portion includes a first stitch portion that is sewn to join the two texture expressing members and a second stitch portion that is separately sewn to both sides of the first stitch portion in the surface mold forming step And a mold for forming a mold for forming a finishing sheet.

8. The method of claim 7,
Wherein the joining step comprises using the wooden mold having the first seating groove portion into which the first stitch portion is inserted and the second seating groove portion into which the second stitch portion is inserted.

8. The method of claim 7,
And a first protruding portion and a second protruding portion protruding from both sides of the first seating groove portion so as to protrude between the first stitch portion and the second stitch portion of the texture expressing member in the surface material joining step, A method for manufacturing a mold for molding a finished sheet, characterized by using a wooden mold.

The method according to claim 1,
Wherein in the step of forming the surface mold, the first material is applied to the texture expressing member, and then the wooden mold is inserted into the mold to inject the first material.