KR102408118B1 - Apparatus for counter pressure casting - Google Patents

Abstract

One embodiment of the present invention is an upper base; an upper mold part coupled to a lower portion of the upper base and having a key groove formed on a surface side in contact with the upper base; and a guide key coupled to the lower portion of the upper base and inserted into the key groove, wherein the guide key is configured to guide a movement direction according to the thermal deformation of the upper mold part when the upper mold part is thermally deformed. A casting device is provided.

Description

Differential pressure casting apparatus {APPARATUS FOR COUNTER PRESSURE CASTING}

The present invention relates to a differential pressure casting apparatus, and more particularly, to a differential pressure casting apparatus configured to enable a balanced thermal deformation during thermal deformation of a mold part.

In general, a differential pressure casting plant has two compartments consisting of a molten metal chamber and a mold chamber.

A mold chamber is disposed above the molten metal chamber. In addition, the molten metal chamber is provided with a pouring pipe communicating with the casting cavity of the mold chamber, the molten metal accommodated in the molten metal chamber can be filled into the casting cavity of the mold chamber through the pouring pipe.

Briefly looking at the casting method using such a differential pressure casting facility, when the casting process starts, the molten metal chamber and the mold chamber are pressurized to the same predetermined pressure state. In this case, the molten metal chamber and the mold chamber may be pressurized to a predetermined pressure through a gas inlet formed in each chamber.

Next, only the pressure of the molten metal chamber is increased while the molten metal chamber and the mold chamber are pressurized to the same predetermined pressure. In the process of pressurizing only the molten metal chamber in this way, a pressure difference is generated between the molten metal chamber and the mold chamber, and the molten metal accommodated in the molten metal chamber may be filled into the casting cavity by this pressure difference.

That is, in differential pressure casting, the molten metal accommodated in the molten metal chamber is filled into the casting cavity of the mold chamber by using the pressure difference between the molten metal chamber and the mold chamber, but turbulence of the molten metal filled into the casting cavity is prevented. Therefore, the molten metal that is filled into the casting cavity can be uniformly filled.

Finally, the final casting is manufactured by slowly cooling the liquid molten metal filled in the casting cavity.

Here, thermal deformation may occur in the upper mold part and the lower mold part while the high-temperature molten metal is filled into the casting cavity. However, in the prior art, a separate guide configuration for thermally deforming the upper, lower, left, and right sides of the mold portion in a balanced manner during thermal deformation of the mold portion was not provided.

Therefore, there is a problem in that, during thermal deformation of the mold part, the upper, lower, left, and right parts of the mold part are deformed at different strain rates. Due to these problems, there is a problem in that the cast molded product cannot be precisely manufactured to the required product specifications.

Accordingly, various researches and developments have been made on a differential pressure casting apparatus configured to enable a balanced thermal deformation of the mold part when the mold part is thermally deformed.

Prior Document 1: Korean Patent Publication No. 2020-0118638 (2020.10.16)

The technical problem of the present invention for solving the above problems relates to a differential pressure casting apparatus configured to enable a balanced thermal deformation during thermal deformation of a mold part.

In order to achieve the above technical problem, an embodiment of the present invention is an upper base; an upper mold part coupled to a lower portion of the upper base and having a key groove formed on a surface side in contact with the upper base; and a guide key coupled to the lower portion of the upper base and inserted into the key groove, wherein the guide key is configured to guide a movement direction according to the thermal deformation of the upper mold part when the upper mold part is thermally deformed. A casting device is provided.

In one embodiment of the present invention, the guide key is provided on the upper, lower, left, and right sides of the upper mold part based on the center of the upper mold part, and the guide key provided on the upper part and the lower part is the center of the upper mold part. The guide keys may be disposed to be asymmetrical based on a virtual horizontal center line passing through, and the guide keys provided on the left and right sides may be disposed to be asymmetrical based on a virtual vertical center line passing through the center of the upper mold part.

In one embodiment of the present invention, it further comprises a manifold coupled to the upper portion of the upper base, the manifold comprising: a body; a cooling water supply part formed on the inner side of the body part and provided in plurality at predetermined intervals along the length direction of the body part; and a plurality of cooling water discharge units formed on an outer side of the body portion at predetermined intervals along a length direction of the body portion, wherein the cooling water supply portion includes a first cooling water supply hole formed in a vertical direction of the body portion; The body portion is formed in a horizontal direction and includes a second cooling water supply hole communicating with the first cooling water supply hole, and the cooling water discharge unit includes a first cooling water discharge hole formed in a vertical direction of the body portion and a horizontal direction of the body portion, It may be formed of a second cooling water discharge hole communicating with the first cooling water discharge hole.

In one embodiment of the present invention, when the manifold is viewed in a plan view, the first cooling water supply hole and the first cooling water discharge hole are alternately disposed along the longitudinal direction of the body portion, and the second cooling water The supply hole and the second coolant discharge hole may be formed to have different heights from the bottom surface of the body part.

In one embodiment of the present invention, a first maintenance opening hole extending in line with the second coolant supply hole and opening to the outside of the body portion is formed in the body portion, and is formed in a straight line with the second coolant discharge hole Extending, a second maintenance opening hole that is opened to the outside of the body portion is formed, and the first maintenance opening hole and the second maintenance opening hole may be opened and closed by the stopper.

In one embodiment of the present invention, a stepped insertion portion may be formed at upper ends of the first coolant supply hole and the first coolant discharge hole, and a corrosion prevention ring may be provided in the stepped insertion portion.

In one embodiment of the present invention, the anti-corrosion ring may be made of a stainless material.

The effect of the differential pressure casting apparatus according to the present invention described above will be described as follows.

According to the present invention, as the differential pressure casting apparatus is provided with a plurality of guide keys inserted into the keyway formed in the mold part, when thermal deformation such as thermal expansion or thermal contraction occurs in the mold part, a balanced thermal deformation can be achieved. Accordingly, the finally manufactured casting molded article can be precisely manufactured to the required specifications.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a configuration diagram schematically showing a differential pressure casting facility according to an embodiment of the present invention.
2 is a schematic illustration of a differential pressure casting apparatus according to an embodiment of the present invention.
3 is a perspective view illustrating a manifold according to an embodiment of the present invention.
4 is a plan view of a manifold according to an embodiment of the present invention as viewed from a plane.
5 is a cross-sectional view of a manifold according to an embodiment of the present invention.
6 is a perspective view showing an upper module part according to an embodiment of the present invention.
7 is an exemplary view showing a state in which the ejection plate is lowered according to an embodiment of the present invention.
8 is an exemplary view showing an upper mold part coupled to an upper plate according to an embodiment of the present invention.
9 is an exemplary view showing a guide key provided under the upper plate according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

In the present invention, the upper and lower parts mean positioned above or below the target member, and do not necessarily mean positioned at the upper or lower part with respect to the direction of gravity.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram schematically showing a differential pressure casting apparatus according to an embodiment of the present invention, FIG. 2 is a schematic illustration of a differential pressure casting apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a perspective view showing a manifold according to an embodiment, FIG. 4 is a plan view of a manifold according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of a manifold according to an embodiment of the present invention; 6 is a perspective view showing an upper module part according to an embodiment of the present invention, FIG. 7 is an exemplary view showing a state in which the ejection plate is lowered according to an embodiment of the present invention, and FIG. 8 is an embodiment of the present invention It is an exemplary view showing the upper mold part coupled to the upper plate according to, Figure 9 is an exemplary view showing the guide key provided under the upper plate according to an embodiment of the present invention.

As shown in FIGS. 1 to 9 , the differential pressure casting facility 4000 has two partitioned chambers including a molten metal chamber 4200 and a mold chamber 4100 .

A mold chamber 4100 is disposed above the molten metal chamber 4200 . In addition, a warming furnace 4210 is provided in the molten metal chamber 4200 , and molten metal, which is a molten metal, may be accommodated in the heat retention furnace 4210 . The molten metal is filled into the casting cavity provided in the differential pressure casting apparatus 3000 through the pouring pipe 4220 . Here, a differential pressure casting device 3000 is provided in the mold chamber 4100, and the upper mold part 300 and the lower mold part 700 of the differential pressure casting device 3000 provide a casting cavity therein through the union. . The upper mold part 300 and the lower mold part 700 making up such a pair may be composed of only one in the differential pressure casting apparatus 3000, and are provided in various numbers such as 2, 4, 6, 8, etc. can be In the present invention, an example in which the upper mold part 300 and the lower mold part 700 forming a pair are provided with four will be described as an example. The molten metal introduced into the casting cavity as described above may be manufactured into a casting molded article through a casting operation.

The differential pressure casting apparatus 3000 provided in the mold chamber 4100 may include an upper mold module part 1000 and a lower mold module part 2000 . The upper mold module part 1000 is provided on the upper part of the lower mold module part 2000, and forms a pair with the lower mold module part 2000 to manufacture a cast molded product.

Here, the upper mold module part 1000 may include an upper base 100 , a manifold 200 , an upper mold part 300 , and a coolant pipe 400 .

Here, the upper base 100 supports and fixes the upper mold part 300 .

A plurality of pipe guide holes 101 may be formed in the upper base 100 as described above.

And the upper mold part 300 is coupled to the lower surface of the upper base 100 .

This upper mold part 300 forms a pair with the lower mold part 700 provided in the lower mold module part 2000, and when the upper mold part 300 and the lower mold part 700 are combined, the inside is melted. A casting cavity may be formed in which metal may be received. The molten metal introduced into the casting cavity may be manufactured into a casting molded article.

And a manifold 200 is provided on the upper surface of the upper base 100 .

The manifold 200 is selectively connected to a cooling water channel unit (not shown) for circulating and supplying cooling water. The manifold 200 supplies the cooling water supplied from the cooling water channel unit to the upper mold unit 300 , and supplies the cooling water heat exchanged in the upper mold unit 300 to the cooling water channel unit.

In addition, the cooling water channel unit provides a force for pressing the upper mold part 300 toward the lower mold part 700 to form the upper mold part 300 and the lower mold part 700 . That is, the cooling water channel part presses the manifold 200 downward and moves the upper base 100 downward so that the upper mold part 300 is eventually molded into the lower mold part 700 .

The manifold 200 provided on the upper part of the upper base 100 is provided on the edge of the upper base 100 , and the lower surface of the manifold 200 is made to fully contact the upper surface of the upper base 100 . Accordingly, the manifold 200 provided in plurality at predetermined intervals may stably press the upper base 100 as a whole.

Since the lower surface of the manifold 200 is coupled to the upper base 100 so as to have a large pressing area on the upper base 100 , the pressing force can be effectively transmitted from the manifold 200 to the upper base 100 . .

Such a manifold 200 and the upper base 100 may be integrally coupled.

And the upper mold part 300 is coupled to the lower surface of the upper base 100 . As such, the manifold 200 and the upper mold part 300 are respectively coupled to the upper and lower surfaces of the upper base 100 .

And the cooling water pipe 400 is made to connect the manifold 200 and the upper mold part 300 . As such, the cooling water flowing into the cooling water pipe 400 through the manifold 200 is supplied to the upper mold part 300 , and the upper mold part 300 may maintain a predetermined temperature range during the casting process. When the cooling water pipe 400 is shown in the entire drawing of the present invention, the cooling water pipe 400 is only shown in FIG. 4 because the drawing becomes very complicated.

Also, the cooling water that has cooled the upper mold part 300 is discharged to the manifold 200 through the cooling water pipe 400 . As such, one end of the cooling water pipe 400 is connected to the manifold 200 , and the other end of the cooling water pipe 400 is connected to the upper mold unit 300 to guide the movement of the cooling water.

The cooling water pipe 400 connects the manifold 200 and the upper mold part 300 through the pipe guide hole 101 formed in the upper base 100 . The cooling water pipe 400 has, for example, a simple 'L'-shaped structure, and may connect the manifold 200 and the upper mold part 300 . Accordingly, replacement and maintenance of the cooling water pipe 400 can be easily performed.

Such a manifold 200 may include a body portion 210 , a cooling water supply unit 220 , and a cooling water discharge unit 230 .

Here, the body 210 forms the overall shape of the manifold 200 .

In addition, the cooling water supply unit 220 is configured to guide the cooling water supplied from the cooling water channel unit to the cooling water pipe 400 .

The cooling water supply unit 220 may be disposed on the inner side of the body unit 210 . The cooling water supply unit 220 may be provided in plurality at predetermined intervals along the longitudinal direction of the body unit 210 .

The cooling water supply unit 220 may be formed in the form of a hole in the body unit 210 . The cooling water supply unit 220 may include a first cooling water supply hole 221 and a second cooling water supply hole 222 .

Here, the first cooling water supply hole 221 is formed to be formed in a vertical direction of the body portion 210 , and the second cooling water supply hole 222 communicates with the first cooling water supply hole 221 , and the body portion 210 . is formed in the horizontal direction of

In addition, the cooling water discharge unit 230 is configured to guide the cooling water flowing in from the cooling water pipe 400 to the cooling water channel unit.

The cooling water discharge unit 230 may be spaced apart from the cooling water supply unit 220 and disposed outside the body unit 210 . The cooling water discharge unit 230 may be provided in plurality at predetermined intervals along the length direction of the body unit 210 .

The cooling water discharge unit 230 may be formed in the form of a hole in the body unit 210 like the cooling water supply unit 220 . The cooling water discharge unit 230 may include a first cooling water discharge hole 231 and a second cooling water discharge hole 232 .

Here, the first cooling water discharge hole 231 is formed to be formed in a vertical direction of the body portion 210 , and the second cooling water discharge hole 232 communicates with the first cooling water discharge hole 231 , and the body portion 210 . is formed in the horizontal direction of

At this time, the first cooling water supply hole 221 is disposed inside the body 210 so that the cooling water supply 220 and the cooling water discharge 230 formed in the body 210 do not interfere with each other's paths. and the first cooling water discharge hole 231 may be disposed on the outside of the body portion 210 .

When the body portion 210 is viewed from a plan view so that the cooling water supply unit 220 and the cooling water discharge unit 230 do not interfere with each other, the first cooling water supply hole 221 and the first cooling water discharge hole 231 are Preferably, they are alternately disposed along the longitudinal direction of the body portion 210 . In addition, it is preferable that the second cooling water supply hole 222 and the second cooling water discharge hole 232 have different heights from the bottom surface of the body 210 .

And a first maintenance opening hole 241 and a second maintenance opening hole 242 may be further formed in the body portion 210 .

The first maintenance opening hole 241 is formed to extend in a straight line with the second cooling water supply hole 222 . One end of the first maintenance opening hole 241 is made to communicate with the second cooling water supply hole 222 , and the other end of the first maintenance opening hole 241 is opened to the outer surface of the body part 210 . is done

And the second maintenance opening hole 242 is made to extend in a straight line with the second cooling water discharge hole 232 like the first maintenance opening hole 241 .

The first maintenance opening hole 241 and the second maintenance opening hole 242 are easily and quickly clogged with sludge when a problem occurs in the flow of coolant due to sludge during the operation of the differential pressure casting device 3000 . made to handle the phenomenon.

In general, when the differential pressure casting apparatus 3000 is used for a long time, for example, fine sludge generated by corrosion or the like moves together along the cooling circulation line. Such fine sludge may affect the flow of cooling water, and in severe cases, the sludge may block the flow of cooling water. As such, when the cooling water supply is not smoothly performed, various problems may occur, for example, the upper mold part 300 may not be cooled to a required temperature range.

The point at which a problem occurs in the flow of cooling water due to the accumulation of sludge is mostly generated in the portion flowing into the manifold 200 after circulating the upper mold part 300 . That is, sludge loading is mainly generated in the second cooling water discharge hole 232 part. In addition, sludge accumulation may occur in the first cooling water discharge hole 231 portion.

As such, when sludge accumulation occurs in the first cooling water discharge hole 231 and the second cooling water discharge hole 232 , the operator blocks the first maintenance opening hole 241 and the second maintenance opening hole 242 . Sludge existing in the second coolant supply hole 222 and the second coolant discharge hole 232 through the first maintenance opening hole 241 and the second maintenance opening hole 242 in a state in which the stopper 250 is removed. can be easily removed.

Accordingly, when sludge accumulation occurs in the conventional manifold 200 , a maintenance process in which the manifold 200 is separated from the upper base 100 is unnecessary. That is, the operator can easily remove the accumulated sludge in the manifold 200 through the first maintenance opening hole 241 and the second maintenance opening hole 242 in a state in which the stopper 250 is separated from the manifold 200 . can be repaired

Meanwhile, a stepped insertion part 201 is formed at upper ends of the first coolant supply hole 221 and the first coolant discharge hole 231 , and a corrosion prevention ring 260 may be provided in the stepped insertion part 201 . .

The anti-corrosion ring 260 is provided at the upper end of the first cooling water supply hole 221 and the first cooling water discharge hole 231 that are exposed to the outside from the cooling water supply unit 220 and the cooling water discharge unit 230 . It is made to prevent oxidation of the manifold 200 due to external air contact.

That is, when the anti-corrosion ring 260 is not provided in the cooling water supply unit 220 and the cooling water discharge unit 230 , the upper end of the first cooling water supply hole 221 and the first cooling water discharge hole 231 remains. The cooling water is in contact with air, and the corrosion of the first cooling water supply hole 221 and the first cooling water discharge hole 231 exposed to the outside is accelerated. As described above, when corrosion occurs at the upper ends of the first coolant supply hole 221 and the first coolant discharge hole 231 , the corresponding rust and other foreign substances affect the coolant flow.

Accordingly, in the present invention, by coupling the anti-corrosion ring 260 to the stepped insertion portion 201, the portion of the manifold 200 exposed to the outside is prevented from being corroded by air.

The anti-corrosion ring 260 may be made of, for example, a stainless (SUS) material. Here, the anti-corrosion ring 260 does not necessarily have to be made of a stainless material, and may be made of any material as long as the corrosion prevention is excellent.

And it goes without saying that the stopper 250 blocking the first maintenance opening hole 241 and the second maintenance opening hole 242 described above may also be made of a stainless material.

Meanwhile, the upper mold module unit 1000 may further include an eject module unit 500 .

Here, the ejection module unit 500 may include an ejection plate 510 , a position guide unit 520 , a restoration spring 530 , and a separation prevention unit 540 .

Here, the ejection plate 510 is spaced apart from the upper part of the upper base 100 .

The ejection plate 510 is provided with a plurality of ejection pins (not shown). Such an ejection pin is used to take out a cast molded product that has been cast in the casting cavity by driving the ejection plate 510 from the mold.

And the position guide part 520 is provided under the eject plate (510).

The position guide part 520 is configured to limit the movement of the ejection plate 510 when the upper mold part 300 and the lower mold part 700 are combined.

The position guide unit 520 has a position guide head 521 and a position guide pin 522, and may be formed in a bolt shape.

Here, the position guide head 521 is coupled to the lower surface of the eject plate 510 .

And the end of the position guide pin 522 is made to come into contact with the ejection movement prevention part 710 provided in the lower mold module part 2000 when the upper mold part 300 and the lower mold part 700 are combined. The lower movement of the plate 510 is restricted.

And the restoration spring 530 is inserted through the position guide pin (522).

One end of the restoration spring 530 is elastically supported by the seating groove 102 formed on the upper surface of the upper base 100 , and the other end of the restoration spring 530 is elastically supported by the position guide head 521 .

Such a restoration spring 530 is made to effectively move the ejection plate 510 moved downward to take out the cast molded product that has been cast in the casting cavity from the mold to the original position. In other words, in the process in which the ejection plate 510 is moved downward to take out the cast molded product from the mold, the restoration spring 530 is compressed, and the restoration spring 530 compressed after taking out the cast molding is applied to the restoring force. Accordingly, the ejection plate 510 is moved to its original position.

And the separation prevention unit 540 is made to limit the movement range of the ejection plate 510 elastically restored by the restoration spring 530 .

The separation prevention unit 540 has a separation prevention head 541 and separation prevention pins 542 , and may be formed in a bolt shape like the position guide unit 520 .

Here, the escape prevention pin 542 is inserted through the prevention pin guide hole 511 formed in the ejection plate 510 , and the lower portion is coupled to the upper base 100 .

And the separation prevention head 541 is coupled to the upper portion of the separation prevention pin 542, it is disposed on the outside of the ejection plate (510). The separation prevention head 541 is configured to limit the movement range of the ejection plate 510 moving outward.

Such a departure prevention head 541 limits the movement range in which the ejection plate 510 elastically restored by, for example, the restoration spring 530 can be moved to the outside.

As such, after the cast molded product is taken out from the mold through the movement of the ejection plate 510 , the ejection plate 510 may be effectively returned to its original position by the restoring spring 530 and the separation preventing unit 540 .

Meanwhile, the eject module unit 500 may further include a guide guide unit 550 .

The guide guide part 550 guides the movement direction of the ejection plate 510 in a state in which the guide guide part 550 is inserted through the movement guide hole 512 formed in the ejection plate 510 .

The guide guide part 550 prevents the ejection plate 510 from shaking and ensures stable movement.

Meanwhile, the upper mold module unit 1000 may further include a guide key 600 .

The guide key 600 is provided on the lower surface of the upper base 100 , and is made to be inserted into the key groove 301 formed in the upper mold part 300 . Here, the keyway 301 is formed on the coupling surface of the upper mold part 300 coupled to the upper base 100 .

Such a guide key 600 guides the direction of thermal deformation of the upper mold part 300 when, for example, thermal deformation such as thermal expansion or thermal contraction occurs in the upper mold part 300 .

A plurality of such guide keys 600 may be provided on the upper base 100 . Such a guide key 600 may be provided, for example, on top, bottom, left, and right sides of the center of the upper mold part 300 , respectively.

At this time, the guide key 600 provided in the upper part and the guide key 600 provided in the lower part are not located on the same vertical line based on an imaginary horizontal center line H passing through the center of the upper mold part 300 . , preferably made to be asymmetrical with respect to the virtual vertical center line (V) of the upper mold part 300 . This is, for example, when the upper mold part 300 undergoes thermal deformation in the left and right directions, the occurrence of thermal deformation of the upper mold part 300 is minimized and the upper mold part 300 is balanced. This is to allow thermal deformation to occur.

And the guide key 600 provided on the left side and the guide key 600 provided on the right side based on the virtual vertical center line (V) passing through the center of the upper mold part 300 are not located on the same horizontal line, It is preferable that the upper mold part 300 is formed to be asymmetric with respect to the imaginary horizontal center line (H). For example, when the upper mold part 300 undergoes thermal deformation in the upper and lower directions, the occurrence of thermal deformation of the upper mold part 300 is minimized and at the same time, the upper mold part 300 is balanced. This is to allow thermal deformation to occur.

As such, the guide key 600 is provided in the upper, lower, left, and right facing directions with respect to the center of the upper mold part 300 as the guide keys 600 are asymmetrically disposed with each other, so that the upper mold part ( 300), when thermal deformation occurs in the upper, lower, left, and right directions, thermal deformation can occur in a balanced manner without biasing to either side.

On the other hand, the various components mentioned in the upper mold module part 1000 may also be provided in the lower mold module part 2000 , and specific details of the lower mold module part 2000 will be omitted.

However, this is only a preferred embodiment of the present invention, and the scope of the present invention is not limited by the scope of the present invention.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: upper base
101: pipe guide hole
102: seating groove
200: Manifold
201: stepped insertion part
210: body part
220: coolant supply
221: first coolant supply hole
222: second cooling water supply hole
230: coolant outlet
231: first cooling water discharge hole
232: second cooling water discharge hole
241: first maintenance open hole
242: second maintenance open hole
250: stopper
260: anti-corrosion ring
300: upper mold part
301: keyway
400: coolant pipe
500: eject module unit
510: eject plate
511: prevention pin guide hole
512: movement guide hall
520: location guide unit
521: position guide head
522: position guide pin
530: restoration spring
540: escape prevention unit
541: escape prevention head
542: escape prevention pin
550: guide guide unit
600: guide key
700: lower mold part
710: ejection movement prevention unit
1000: upper mold module part
2000: lower mold module part
3000: differential pressure casting device
4000: differential pressure casting equipment
4100: mold chamber
4200: molten metal chamber
4210: warming furnace
4220: pouring pipe

Claims (7)

upper base;
a manifold coupled to the upper part of the upper base;
an upper mold portion coupled to a lower portion of the upper base and having a key groove formed on a surface side thereof in contact with the upper base; and
A guide key coupled to the lower portion of the upper base and inserted into the key groove,
The guide key is configured to guide the movement direction according to the thermal deformation of the upper mold part when the upper mold part is thermally deformed,
The manifold may include a body portion; a cooling water supply part formed on the inner side of the body part and provided in plurality at predetermined intervals along the length direction of the body part; and a plurality of cooling water discharge units formed on the outer side of the body portion at predetermined intervals along a length direction of the body portion, wherein the cooling water supply portion includes a first cooling water supply hole formed in a vertical direction of the body portion; The body portion is formed in a horizontal direction and includes a second cooling water supply hole communicating with the first cooling water supply hole, and the cooling water discharge unit includes a first cooling water discharge hole formed in a vertical direction of the body portion and a horizontal direction of the body portion, and a second cooling water discharge hole communicating with the first cooling water discharge hole.
According to claim 1,
The guide key is provided on the upper, lower, left, and right sides, respectively, based on the center of the upper mold part,
The guide keys provided on the upper and lower sides are arranged to be asymmetrical with respect to a virtual horizontal center line passing through the center of the upper mold part,
The guide key provided on the left and right sides is a differential pressure casting apparatus, characterized in that it is arranged asymmetrically with respect to a virtual vertical center line passing through the center of the upper mold part.
delete According to claim 1,
When the manifold is viewed in a plan view, the first cooling water supply hole and the first cooling water discharge hole are alternately arranged along the longitudinal direction of the body part;
The differential pressure casting apparatus according to claim 1, wherein the second coolant supply hole and the second coolant discharge hole have different heights from the bottom surface of the body part.
According to claim 1,
A first maintenance opening hole extending in a straight line with the second coolant supply hole and opening to the outside of the body portion is formed in the body portion;
a second maintenance opening hole extending in a straight line with the second coolant discharge hole and opening to the outside of the body part is formed;
The differential pressure casting apparatus, characterized in that the first maintenance opening hole and the second maintenance opening hole are opened and closed by a stopper.
According to claim 1,
A stepped insertion portion is formed at upper ends of the first coolant supply hole and the first coolant discharge hole, and a corrosion prevention ring is provided in the stepped insertion portion.
7. The method of claim 6,
The anti-corrosion ring is a differential pressure casting device, characterized in that made of a stainless material.

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