KR20220090487A - Mold device and mold manufacturing method to produce the same - Google Patents

Abstract

A mold apparatus according to an embodiment of the present invention provides a mold apparatus capable of manufacturing a molding by applying pressure to a molding matrix, comprising: a lower mold having a molding surface formed on an upper surface thereof; and an upper mold having a molding surface formed on a lower surface and applying pressure to the molding matrix together with the lower mold, wherein the lower mold is made of a first lower mold made of a first material and a second material, A second lower mold connected to the first lower mold may be provided.

Description

MOLD DEVICE AND MOLD MANUFACTURING METHOD TO PRODUCE THE SAME

The present invention relates to a mold apparatus capable of providing a molded product by applying pressure to a molding matrix, and a mold manufacturing method for producing the same.

In general, the hot stamping process refers to a method of moving a steel material heated to a temperature of about 950℃ to a mold, forming it using a press, and then rapidly cooling it in the mold. Specifically, in the hot stamping process, after receiving a high-temperature material and press-molding, a cooling fluid may be introduced into the mold to rapidly cool the material in the mold. That is, in the hot stamping process, high-temperature forming and quenching-quenching can be performed simultaneously, so that the steel sheet material is molded at a high temperature to minimize thermal deformation, and by quenching in a closed mold, the raw material is made super high-strength. It has the advantage of improving formability and dimensional accuracy because it can be manufactured with A conventional hot stamping mold apparatus has been disclosed in Korean Patent No. 10-1961745.

Here, in order to produce a mold provided in the existing mold apparatus, the steel block had to be cut. Specifically, the surface of the steel block was cut to form a forming surface, and a hole was cut inside the steel block to form a flow path through which the coolant flows. However, this method takes a long time to process, and there is a problem that the production cost cannot be lowered.

An object of the present invention is to provide a mold apparatus capable of improving the functions of a simple and produced product, and a mold manufacturing method for producing the same.

However, the problems to be solved by the present invention are not limited to the above problems, and the problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and accompanying drawings. There will be.

A mold apparatus according to an embodiment of the present invention provides a mold apparatus capable of manufacturing a molding by applying pressure to a molding matrix, comprising: a lower mold having a molding surface formed on an upper surface thereof; and an upper mold having a molding surface formed on a lower surface and applying pressure to the molding matrix together with the lower mold, wherein the lower mold is made of a first lower mold made of a first material and a second material, A second lower mold connected to the first lower mold may be provided.

In addition, the first material may have a higher strength than the second material.

In addition, the second material may have a higher thermal conductivity than the first material.

In addition, the second lower mold may be formed on the first lower mold by using a 3D printer.

In addition, the second lower mold may be connected to the first lower mold to protrude from the lower mold toward the upper mold with respect to the first lower mold.

In addition, a flow path portion disposed in a flow hole, which is a hole through which the lower mold is formed, so that a fluid having a predetermined purpose can flow, the flow passage portion supports the inner surface of the flow hole, A space through which the fluid flows may be provided.

In addition, the flow path portion may be made of a third material having a higher strength than at least one of the first material and the second material.

Also, the flow path part may be positioned between the first lower mold and the second lower mold.

The method for manufacturing a lower mold according to an embodiment of the present invention includes a lower mold having a molding surface on the upper surface and an upper mold having a molding surface on the lower surface and applying pressure to a molding matrix together with the lower mold to manufacture a molding. A method for manufacturing a lower mold, which is a method for manufacturing a lower mold of a mold device, comprising: a first matrix preparation step of preparing a first matrix made of a first material; and a second matrix forming step of forming a second matrix made of the second material on the first matrix by using a 3D printer.

In addition, the first parent body and at least one of the second parent body is processed to form a flow hole, which is a hole through which a fluid can flow, a flow hole forming step; may further include.

In addition, the flow hole forming step may be a step in which the flow hole is formed in the first mother body.

In addition, the step of forming the flow hole may be a step of inserting the flow hole made of a third material into the flow hole to support the inner surface of the flow hole after the flow hole is formed in the first mother body.

In addition, in the flow hole forming step, the flow hole may be formed between the first parent body and the second parent body.

In addition, in the flow hole forming step, one surface of the first mother body is cut so that a part of the flow hole is formed on the upper surface of the first mother body, and then the flow passage providing a space in which the fluid flows inside the first After being seated in the flow hole formed in the mother body, it may be a step in which the second matrix is formed while being built on one surface of the first matrix and the flow passage part.

In addition, the surface processing step of manufacturing the lower mold by processing the surface of the second parent body so that the surface of the second parent body becomes uniform; may further include.

According to the mold apparatus and the mold manufacturing method according to the present invention, it is possible to reduce the production cost.

In addition, it is possible to reduce the production time.

However, the effects of the present invention are not limited to the above-described effects, and the effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and accompanying drawings.

1 is a view showing a mold apparatus according to a first embodiment of the present invention;
2 is a view showing a lower mold included in the mold apparatus according to the first to third embodiments of the present invention;
3 is a view showing a flowchart of a mold manufacturing method according to the first to third embodiments of the present invention;
4 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the first embodiment of the present invention;
5 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the second embodiment of the present invention;
6 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the third embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention may add, change, delete, etc. other components within the scope of the same spirit, through addition, change, deletion, etc. Other embodiments included within the scope of the invention may be easily proposed, but this will also be included within the scope of the invention.

In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a view showing a mold apparatus according to a first embodiment of the present invention.

Referring to FIG. 1 , the mold apparatus according to the first embodiment of the present invention is a mold apparatus capable of manufacturing a molded product X10 by applying a pressure to a molding matrix, a lower mold 200 having a molding surface formed on the upper surface ) and a molding surface is formed on the lower surface, and may include an upper mold 100 for applying pressure to the molding matrix together with the lower mold 200 .

A molding matrix is disposed on the upper side of the lower mold 200 , and as the upper mold 100 moves toward the lower mold 200 , pressure may be engraved on the molding matrix.

At this time, a heat providing unit (eg, a heating wire, not shown) is disposed in at least one of the upper mold 100 and the lower mold 200 , and the upper mold 100 and/or the lower mold 200 are heated. can be

The mold apparatus may further include a moving means (not shown) capable of moving the lower mold 200 and/or the upper mold 100 .

In addition, the limiting phrases 'upper' and 'lower' with respect to the mold and the illustrated positions of the upper and lower molds in the drawings are for ease of explanation, and the present invention is not limited thereto.

As an example, the upper mold 100 and the lower mold 200 are positioned on the same height, and a molding can be manufactured by narrowing or extending the separation distance between each other.

The molding matrix may refer to an object before becoming a molding.

As an example, the forming matrix may be a steel sheet.

Hereinafter, the characteristics of the lower mold of the first to third embodiments will be described in detail.

2 is a view showing a lower mold included in the mold apparatus according to the first to third embodiments of the present invention.

Specifically, Figure 2 (a) is a view showing the lower mold 200 according to the first embodiment of the present invention, Figure 2 (b) shows the lower mold 1200 according to the second embodiment of the present invention. It is a view, and FIG. 2(c) is a view showing a lower mold 2200 according to a third embodiment of the present invention.

Referring to FIG. 2( a ), the lower mold 200 according to the first embodiment is made of a first lower mold 210 made of one material and a second material, and is connected to the first lower mold 210 . A second lower mold 220 may be provided.

Here, the first material may have a higher strength than the second material.

Since the first material has higher strength than the second material, it is possible to effectively support the pressing force of the upper mold 100 to come down.

In addition, the second material may have a higher thermal conductivity than the first material.

Due to this, heat can be more effectively transferred to the molding matrix.

Alternatively, the cooling water can rapidly absorb heat from the heated molding.

For example, the first material may be steel.

However, the present invention is not limited thereto, and the first material may be variously modified at a level obvious to those skilled in the art.

The second material may be Poly Lactic Acid (PLA), Acrylonitrile-Butadiene-Stryrene (ABS), or the like.

However, the present invention is not limited thereto, and the second material may be variously modified at a level obvious to those skilled in the art.

A second lower mold 220 may be positioned above the first lower mold 210 .

At least a portion of the upper surface of the second lower mold 220 may be referred to as a molding surface.

At least a portion of the upper surface of the first lower mold 210 may be referred to as a molding surface.

The second lower mold 220 may be connected to the first lower mold 210 so as to protrude from the lower mold 200 toward the upper mold 100 with respect to the first lower mold 210 .

The second lower mold 220 may be formed on the first lower mold 210 by using a 3D printer.

In the detailed description of the lower mold according to the second embodiment, it may be omitted to the extent that it overlaps with the above description.

Referring to FIG. 2( b ), the lower mold 1200 according to the second embodiment has a flow hole h1200 , which is a hole through which the lower mold 1200 is formed so that a fluid having a predetermined purpose can flow. It may further include a flow path portion 230 to be disposed.

As a specific example, a flow hole h1200 may be formed inside the first lower mold 1210 , and the flow path part 230 may be inserted into the flow hole h1200 .

The flow passage 230 may support the inner surface of the flow hole h1200 and provide a space inside which the fluid flows.

The flow path part 230 may improve the supporting force of the first lower mold 1210 by compensating for a weakness in which the rigidity of the first lower mold 1210 may be weakened by the distribution hole.

For example, the flow path may have a tubular shape.

Cooling water may flow inside the flow path 230 .

The cooling water may cool the heated molding matrix.

The flow path part 230 may be made of a third material having a higher strength than at least one of the first material and the second material.

For example, the third material may have a higher strength than the first material.

In the detailed description of the lower mold according to the third embodiment, it may be omitted to the extent that it overlaps with the above-described content.

Referring to FIG. 2C , the flow path 230 of the lower mold 2200 according to the third embodiment may be positioned between the first lower mold 2210 and the second lower mold 2220 . .

The upper surface of the first lower mold 2210 may provide a portion of the flow hole, and the lower surface of the second lower mold 2200 may also provide the remaining part of the flow hole.

Since the flow passage 230 is in contact with the second lower mold 2220 , the cooling water may more rapidly absorb heat from the molding.

Hereinafter, a method of manufacturing the lower mold will be described in detail.

3 is a view showing a flowchart of a mold manufacturing method according to the first to third embodiments of the present invention.

Referring to FIG. 3 , in the mold manufacturing method according to an embodiment of the present invention, a lower mold having a molding surface on the upper surface and a molding surface on the lower surface are formed, and a pressure is applied to a molding matrix together with the lower mold to manufacture a molded product In the lower mold manufacturing method, which is a method of manufacturing the lower mold 200 of the mold apparatus including the upper mold, may include

In addition, the mold manufacturing method may further include a flow hole forming step (S120) in which at least one of the first parent body and the second parent body is processed to form a flow hole, which is a hole through which a fluid can flow. can

In addition, the mold manufacturing method may include a second matrix forming step (S130), which is a step of forming a second matrix made of the second material on the first matrix by using a 3D printer.

In addition, the mold manufacturing method may further include a surface processing step (S140) of manufacturing the lower mold by processing the surface of the second parent body so that the surface of the second parent body becomes uniform.

Hereinafter, the mold manufacturing method according to each embodiment will be described in detail.

4 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the first embodiment of the present invention.

Referring to FIG. 4( a ), a first mother body M210 made of a first material may be prepared in the first mother body preparation step.

Referring to FIG. 4( b ), in the second mother body forming step ( S130 ), a mother body made of a second material may be formed on the upper side of the first parent body M210 .

Here, the second mother body M220 may be manufactured by using a 3D printer.

Referring to Figure 4 (c), in the surface processing step (S140), by uniformly processing the non-uniform surface of the second parent body (M220), a molding surface may be formed.

Referring to FIG. 4(d) , the first parent body M210 and the second parent body M220 that have gone through all the above-described steps may be defined as the first lower mold 210 and the second lower mold 220 .

5 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the second embodiment of the present invention.

Referring to FIG. 5( a ), a first mother body M1210 made of a first material may be prepared in the first mother body preparation step.

Referring to FIG. 5B , in the flow hole forming step, a flow hole h1200, which is a predetermined hole, may be formed inside the first mother body M1210 through cutting.

The flow hole forming step may be a step in which the flow hole h1200 is formed in the first mother body M210.

For example, the flow hole h1200 may be formed in the longitudinal direction of the first mother body M210.

Although it is illustrated that there are three flow holes h1200 in the drawings, the present invention is not limited thereto, and the number of flow holes h1200 can be variously modified at a level obvious to those skilled in the art.

5(c), in the flow hole forming step, after the flow hole h1200 is formed in the first mother body M210, the flow path part 230 made of a third material is formed of the flow hole h1200. It may be a step of being inserted into the flow hole (h1200) to support the inner surface.

That is, the flow hole forming step may refer to a step in which the flow hole 230 is inserted into the flow hole h1200 after the flow hole h1200 is formed in the first mother body M210 .

5( d ) is a surface processing step, and detailed description may be omitted to the extent that it overlaps with the above description.

Referring to FIG. 5E , the first parent body M210 and the second parent body M220 that have gone through all of the above steps may be defined as a first lower mold 1210 and a second lower mold 1220 .

6 is a view for explaining a method of manufacturing a lower mold included in the mold apparatus according to the third embodiment of the present invention.

Referring to FIG. 6( a ), a first mother body M210 made of a first material may be prepared in the first mother body preparation step.

6(b) to 6(d), in the flow hole forming step, a flow hole h2200, which is a predetermined hole, may be formed in the upper side of the first mother body M210 through cutting.

In the step of forming the flow hole, the flow hole h2200 may be formed between the first parent body M210 and the second parent body M220.

In the step of forming the flow hole (h2200), one surface of the first mother body (M210) is cut so that a part of the flow hole (h2200) is formed on the upper surface of the first mother body (M210), and then the fluid flows inside After the flow passage 230 providing a space to be used is seated in the flow hole h2200 formed in the first mother body M210, the first surface of the first mother body M210 and the flow passage part 230 on the 2 It may be a step in which the mother body (M220) is formed while being built.

Specifically, the first flow hole (h2210) may be formed by being partially depressed through cutting on the upper surface of the first mother body (M210). (See Fig. 6(b))

After disposing the flow path part 230 in the first flow hole h2210, a 3D printer is used on the upper surface of the first parent body M210 and the upper surface of the flow path part 230 to the second parent body M220. ) can be formed. (See FIGS. 6(c) and (d))

While the second parent body M220 of which the surface is not processed is formed on the first parent body M210, the second flow hole h2220, which is the remaining flow hole h2200, may be formed.

6(e) is a surface processing step, and detailed description may be omitted to the extent that it overlaps with the above-described content.

Referring to FIG. 6(f) , the first parent body M210 and the second parent body M220 that have gone through all of the above steps may be defined as a first lower mold 2210 and a second lower mold 2220 .

In the accompanying drawings, in order to more clearly express the technical spirit of the present invention, components that are not related to or inferior to the technical spirit of the present invention are briefly expressed or omitted.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and it is understood that various changes or modifications can be made within the spirit and scope of the present invention. It is intended that such changes or modifications will be apparent to those skilled in the art, and therefore fall within the scope of the appended claims.

X10: molding 100: upper mold
200: lower mold

Claims (15)

In a mold apparatus capable of manufacturing a molding by applying pressure to a molding matrix,
a lower mold having a molding surface formed on the upper surface; and
A molding surface is formed on the lower surface, and an upper mold for applying pressure to the molding matrix together with the lower mold; includes,
The lower mold is
A first lower mold made of a first material and a second lower mold made of a second material and connected to the first lower mold,
The second lower mold is positioned on the first lower mold while exposing a portion of the upper surface of the first lower mold,
The upper surface of the second lower mold forms a part of the molding surface,
A portion of the upper surface of the first lower mold exposed by the second lower mold forms the remainder of the molding surface,
mold device.
According to claim 1,
The first material is
Higher strength than the second material,
mold device.
3. The method of claim 2,
The second material is
Higher thermal conductivity than the first material,
mold device.
4. The method of claim 3,
The second lower mold,
formed on the first lower mold using a 3D printer,
mold device.
4. according to any one of claims 2 and 3,
The second lower mold,
connected to the first lower mold so as to protrude from the lower mold in the direction of the upper mold with respect to the first lower mold,
mold device.
6. The method of claim 5,
It further includes; a flow path part disposed in the flow hole, which is a hole formed through the lower mold so that a fluid having a predetermined purpose can flow;
The flow path part,
Supporting the inner surface of the flow hole, providing a space inside which the fluid flows,
mold device.
7. The method of claim 6,
The flow path part,
made of a third material having a higher strength than at least one of the first material and the second material,
mold device.
7. The method of claim 6,
The flow path part,
located between the first lower mold and the second lower mold,
mold device.
Lower mold manufacturing, a method of manufacturing a lower mold of a mold device comprising a lower mold having a molding surface on the upper surface and an upper mold having a molding surface on the lower surface and applying pressure to a molding matrix together with the lower mold to manufacture a molding In the method,
A first maternal preparation step of preparing a first maternal body made of a first material; and
A second matrix forming step, which is a step of forming a second matrix made of the second material on the first matrix by using a 3D printer, includes;
In the second matrix forming step, the second matrix is formed on the first matrix while exposing a portion of the upper surface of the first matrix,
The upper surface of the second parent body forms a part of the molding surface of the lower mold,
A portion of the upper surface of the first matrix exposed by the second matrix forms the remainder of the molding surface of the lower mold,
How to make the lower mold.
10. The method of claim 9,
Further comprising; a flow hole forming step in which at least one of the first parent body and the second parent body is processed to form a flow hole, which is a hole through which a fluid can flow;
Method of manufacturing the lower mold.
11. The method of claim 10,
The flow hole forming step is
The flow hole is a step in which the first parent body is formed,
Method of manufacturing the lower mold.
12. The method of claim 11,
The flow hole forming step is,
After the flow hole is formed in the first mother body, a flow passage made of a third material is inserted into the flow hole to support the inner surface of the flow hole,
Method of manufacturing the lower mold.
11. The method of claim 10,
In the flow hole forming step,
The flow hole is formed between the first body and the second body,
Method of manufacturing the lower mold.
14. The method of claim 13,
The flow hole forming step is,
After one surface of the first body is cut and a part of the flow hole is formed on the upper surface of the first body, the flow path part providing a space in which the fluid flows inside is seated in the flow hole formed in the first body , A step in which the second parent body is formed while being built on one surface of the first parent body and the flow path part,
Method of manufacturing the lower mold.
15. The method of claim 14,
Further comprising; further comprising a;
Method of manufacturing the lower mold.

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