KR101688204B1 - Melt cooling device for melting light metal casting apparatus using a vacuum - Google Patents

Melt cooling device for melting light metal casting apparatus using a vacuum Download PDF

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Publication number
KR101688204B1
KR101688204B1 KR1020150103280A KR20150103280A KR101688204B1 KR 101688204 B1 KR101688204 B1 KR 101688204B1 KR 1020150103280 A KR1020150103280 A KR 1020150103280A KR 20150103280 A KR20150103280 A KR 20150103280A KR 101688204 B1 KR101688204 B1 KR 101688204B1
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KR
South Korea
Prior art keywords
melt
vacuum
molten metal
cooling
generating means
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KR1020150103280A
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Korean (ko)
Inventor
지현철
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일심정공 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00—Equipment for conveying molten metal into beds or moulds
    • B22D35/06—Heating or cooling equipment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The present invention relates to a molten metal cooling device for a molten light metal casting device using vacuum pressure. The purpose thereof is to rapidly cool and harden a molten metal before the molten metal flows into a vacuum generating means. To achieve this, the molten metal cooling device is composed of a movable molten metal cooling unit and a fixed molten metal cooling unit having a movable molten metal guide groove and a fixed molten metal guide groove on one surface, respectively, and fixated and installed in a movable mold and a fixed mold of a mold unit, respectively. A molten metal cooling passage of which one end is connected to one end of a molten metal guide passage and the other end is connected to the vacuum container air discharge pipe of the vacuum generating means is formed to rapidly cool and harden the molten metal before the molten metal forcibly transferred by the vacuum generating means and a molten metal forcibly-transferring unit is discharged to the vacuum container air discharge pipe of the vacuum generating means.

Description

TECHNICAL FIELD [0001] The present invention relates to a cooling apparatus for melting a light metal casting apparatus using a vacuum,

The present invention relates to a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure, and more particularly, to a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure, The molten metal is installed between the mold and the vacuum generating means of the molten light metal casting apparatus using the vacuum pump configured to be able to supply the molten metal to the inside of the vacuum generating means so that the molten metal can be rapidly cooled and solidified before flowing into the vacuum generating means, And more particularly to a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure capable of protecting a vacuum generating means as well as being capable of being excluded.

In general, casting refers to making a desired shape by injecting the metal into a mold prepared by properly dissolving the metal and solidifying it.

There are many kinds of castings that make a desired shape through a mold that has been properly designed by dissolving metal. In general, gravity casting is generally used conventionally. However, in the case of conventional casting using gravity, There is a problem that the molten metal is not completely filled in the casting material, resulting in a high defect rate of the casting product.

In addition, due to the dissolution and casting in the atmosphere, when the metal is melted, there is a lot of molding defects such as bubble defects, surface defects, and unfilled diecast products due to atmospheric gas inflow and bubble formation during casting, The energy loss is also large, and the working environment due to the gas generation is very poor, so that the work is avoided.

In view of this, Patent Application No. 10-2008-0099835 discloses a vacuum system for vacuum melting and casting of metal.

In general, a conventional vacuum system for vacuum melting and casting a metal includes a vacuum pump device, a vacuum dissolver chamber connected to the vacuum pump device and capable of melting metal in a vacuum state and having a molten metal crucible therein, A material inlet pipe connected to the vacuum pump apparatus and adapted to introduce a metal material into the vacuum dissolving chamber in a vacuum state, a sleeve connected to the vacuum dissolving chamber to allow the molten metal to be injected in a vacuum state, And a casting apparatus including a mold in which a molten metal injected into the sleeve in a vacuum state is molded.

The apparatus further includes a first auxiliary vacuum tank between the mold and the vacuum pump apparatus and a second auxiliary vacuum tank interposed between the vacuum dissolving chamber and the vacuum pump apparatus,

The material inlet pipe is configured to be interconnected with the first auxiliary vacuum tank.

However, in the conventional vacuum system for vacuum melting and casting of metal as described above, the molten metal injected into the mold side through the sleeve is usually solidified by the cooling water circulating in the mold as described above, There is a problem that the molten metal can flow into the vacuum device side.

Patent Application No. 10-2008-0099835, filing date; October 10, 2008 The name of the invention; Vacuum system for vacuum melting and casting of metal and vacuum melting and casting method using it

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for automatically supplying molten metal stored in a melt reservoir to a mold by a pressure difference generated by suction of air, The molten metal is installed between the mold part of the molten light metal casting apparatus using vacuum pressure and the vacuum generating means so that the molten metal can be quickly taken away and coagulated before flowing into the vacuum generating means side, And an object of the present invention is to provide a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure capable of protecting a generating means.

Other objects of the present invention will become apparent as the description proceeds.

According to an aspect of the present invention, there is provided a mold for molding a mold, the mold including a movable mold and a stationary mold, A mold part having a guide path for a melt formed therein so as to communicate with a stationary molding groove and a guide part connected to one end of the guide path for the melt of the mold part to be driven in response to control of the control part, And a control unit for controlling the control unit to automatically absorb the molten material stored in the molten material reservoir corresponding to the sucked air of the mold by the vacuum generating unit being driven by the vacuum generating unit And is configured to be able to press-feed the molten material sucked and driven toward the guide path for the melt A melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure, which is provided in a molten light metal casting apparatus using vacuum pressure comprising a melt press feeding section and capable of rapidly solidifying a melt fed by being driven by an apparatus, A movable guide groove for a melt and a fixing guide groove for a melt are formed on a surface of the movable mold and the fixed mold for fixing the movable mold and the fixed mold, respectively, And the other end is connected to the vacuum air blow-off pipe of the vacuum generating means, and the melt pressure-fed by the operation of the vacuum generating means and the melt press-feeding portion is supplied to the vacuum generating means Vacuum air ventilation Quickly take away heat and coagulate before it spills out And a melt cooling furnace is formed.

The above-mentioned melt cooling furnace also includes an inlet passage for introducing the melt so that the melt pressure-fed by the operation of the vacuum generating means and the melt press-feeding section can be rapidly solidified, and a cooling device for cooling the melt introduced from the inlet passage And a connecting path extending from the cooling path and connected to the vacuum air removing pipe of the vacuum generating means.

As described above, according to the melt cooling apparatus for a molten light metal casting apparatus using the vacuum pressure according to the present invention, since the air in the mold is sucked due to the driving of the vacuum generating means, the molten metal stored in the melt- The molten metal is installed between the mold and the vacuum generating means of the molten light metal casting apparatus using the vacuum pump configured to be able to supply the molten metal to the inside of the vacuum generating means so that the molten metal can be rapidly cooled and solidified before flowing into the vacuum generating means, And the vacuum generating means can be protected as well.

1 is a view showing a state where a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure according to the present invention is installed in a casting apparatus.
2 is a view showing a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure according to the present invention.
FIG. 3 is a view showing a state where a melt cooling apparatus for a molten light metal casting apparatus using a vacuum pressure according to the present invention is installed in a casting apparatus and a melt is solidified by molding.

Hereinafter, an embodiment of a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure according to the present invention will be described in detail.

First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the gist of the invention.

As shown in FIGS. 1 and 2, a melt cooling apparatus 100 for a molten light metal casting apparatus using vacuum pressure according to the present invention operates in accordance with the control of a control unit, The movable mold 11 and the stationary mold 12 each having a movable mold and a fixed mold groove (not shown), respectively. The stationary mold 12 is provided with a guide path 13 for the melt, And one end of the guide path 13 for the melt of the mold section 14 is connected to one end of the guide path 13 so as to be driven in accordance with the control of the control section, A vacuum generating means 16 provided with a vacuum air take-out tube 15 for making the pressure lower than the atmospheric pressure and a vacuum generating means 16 for driving the inside of the mold portion 14 to be sucked out (A) into the melt reservoir And a melt press-feeding part 22 which is driven by the control of the control part when the melted material B is automatically sucked and is capable of feeding the attracted melt B toward the guide path 13 for the melt, Which is provided in the molten light metal casting apparatus 10 using the vacuum pneumatic pressurizing unit 10 and is driven by the molten light metal casting apparatus 10 using the vacuum pneumatic pressure, A molten metal cooling and moving part 110 and a molten metal cooling and fixing part 130 which are fixedly installed in the movable mold 11 and the stationary mold 12 of the mold part 14, respectively, One end corresponding to the movement of the movable mold 11 is in communication with one end of the guide path 13 for the melt and the other end is connected to the air blower 15 for vacuum of the vacuum generating means 16 Vacuum generation number (Not shown) so that the molten material that has been pressure-fed by the operation of the molten material conveying section 16 and the melt press-feeding section 22 can quickly take away and solidify before the molten material is discharged to the side of the vacuum air- 150 are formed.

Here, the melt cooling and moving part 110 and the melt cooling and fixing part 130 of the above-mentioned melt cooling apparatus 100 can rapidly cool and solidify the melted material B fed by the melt cooling path 150, So that it is made of a copper alloy material having excellent thermal conductivity.

2, the melt cooling furnace 150 is provided in the melt cooling furnace 150 so as to rapidly solidify the melted material B pressure-fed by the operation of the vacuum generating means 16 and the melt press- A cooling path 153 for cooling the molten metal B extending from the inflow path 151 and a cooling path 153 extending from the cooling path 153 to generate a vacuum And a connecting path 155 connected to the vacuum air removing pipe 15 of the means 16 so that the molten material B to be fed and fed through the melt guiding path 13 flows into the cooling path And the cooling passage 153 is formed so as not to directly enter the side of the cooling passage 153. The cooling passage 153 is formed so as to be distant from the cooling passage 153 by automatically moving the cooling passage 153, And is formed in a zigzag shape.

The above-mentioned melt cooling path 150 is formed to have a diameter of 0.8 mm to 1.5 mm.

When the diameter of the melt cooling path 150 is 0.8 mm or less, the inflow of the pressure-fed melt B into the melt cooling path 150 is delayed and clogging occurs in the inflow path 151, the diameter of the melt cooling passage 150 is 0.8 mm to 1.5 mm since the melt B can be cooled and hardened and can be pressed and fed to the side of the vacuum generating means 16 through the connecting passage 155 .

In the meantime, a molten light metal casting apparatus using a vacuum pneumatic pressure will be described before describing a melt cooling apparatus for a molten light metal casting apparatus using vacuum pressure according to the present invention.

First, the mold part 14 of the molten light metal casting apparatus using the vacuum pressure described above is moved in one direction, that is, the stationary mold 12, under the control of the stationary mold 12 and the control unit, And movable and fixed molding grooves are formed on the respective surfaces of the stationary mold 12 and the movable mold 11 so as to mold the molded product as the molten material B is injected into the movable mold 11 Respectively.

1, the vacuum generating means 16 drives the molten metal B stored in the molten metal storage tank A to be fed through the melt press-feeding portion 22, So that the molten material can be supplied to the fixed molding groove side.

The vacuum generating means 16 is connected to the other end of the melt cooling path 150 of the melt cooling apparatus 100 so as to be driven in response to the control of the control unit, And the inside of the melt press-feeding section 22 at atmospheric pressure or lower.

That is, the vacuum generating means 16 includes a vacuum generating portion 17 which is driven to be controlled in accordance with the control of the control portion, and a mold portion 14 connected to the suction portion of the vacuum generating portion 17, Is connected to the other end of the melt cooling path 150 of the melt cooling apparatus 100 installed in the mold cooling unit 100 and the vacuum generating unit 17 is driven to move the mold unit 14 and the inside of the melt cooling apparatus 100 and the melt press- And a vacuum air removing pipe 15 for vacuuming the air of the vacuum.

A portion of the vacuum generating means 16 connected to the other end of the vacuum air extractor 15, that is, the other end of the cooling device 100, is cooled by the cooling of the melt B, And a filter unit 18 for filtering the input to the generating unit 17 side.

The melt press-feeding section 22 is connected to the melt guiding passage 13 at one end by fixing one end thereof to the stationary mold 12 of the mold section 14 and at the other end to the melt reservoir A through a melt suction pipe so that the vacuum generating means 16 drives the melt B to be sucked and fed to the guide path 13 for the melt.

That is, the melt press-feeding section 22 described above is provided with a hollow melt press-feeding slit section (not shown) which is provided at one end to communicate with the guide path 13 for the melt by fixing one end of the stationary mold 12 of the mold section 14 One end of which is fixedly connected to the outer circumferential surface of the other end of the melt conveying slit portion 19 to communicate with the inside thereof and the other end thereof is inserted into a melt reservoir A in which the melt B is stored, A melt suction pipe 20 provided so as to be capable of sucking the melt B in correspondence with the driving of the melt discharge slit 19 and the operation part 16 inserted into one end of the melt discharge conveying slit part 19 by the control of the control part, (Not shown) to move in the one direction and the other direction inside the melt-conveying slit portion 19 so as to press-feed the melted material B flowing into the melt-conveying slit portion 19 through the melt suction pipe 20 So that the pressing portion 21a and the pressing portion 21a thereof are connected Are integrally formed by the melt consists of a pressure feed yongpeul plunger 21 to be provided consists of a connecting portion (21b) connected to a portion not shown works.

The melt suction pipe 20 is formed of a steel suction pipe 20a to prevent the melt B from adhering to the inner circumferential surface of the inner circumferential surface of the suction pipe 20a when the melt B is sucked and sucked, And a suction main pipe 20b and a suction outer pipe 20c of ceramic material coated on the outer peripheral surface.

The connecting portion 21b of the melt pressurizing applicator 21 described above is configured such that the melt B remaining in the melt suction pipe 20 due to the inflow of the outside air when moving toward the forward side of the melt discharge conveying slit 19 And is formed to have a smaller diameter than the pressing portion 21a so as to be automatically moved to the side of the melt reservoir (A).

The inside of the melt pressurizing applicator 21 is provided with cooling water (not shown) so as to prevent overheating due to the feeding of the melt.

As shown in FIGS. 1 to 3, the molten light metal casting apparatus for a molten light metal casting apparatus using vacuum pressure according to the present invention as described above is characterized in that the molten light metal casting apparatus is driven, The movable mold 11 is moved toward the stationary mold 12 and then the vacuum generating section 17 of the vacuum generating means 16 is driven under the control of the control section and the vacuum generating section 17 is driven The melted material B stored in the melted material storage tank A is discharged to the outside through the melted material suction pipe 22 and the melted material discharged from the melted material suction pipe 22 The molten material B sucked by the movement of the melt pressurizing applicator 21 by the operation of the operating portion, that is, the front side, is guided by the guide for the melt (13). And the melt B remaining in the melt suction pipe 20 automatically falls down to the melt reservoir A side and returns to the side of the melt reservoir A. The melted material B which has been pressure-fed by the movement of the melt pressurization applicator 21 B are filled in the movable and fixed forming grooves and the remaining melt B is cooled and solidified as heat conduction occurs while passing through the melt cooling path 150.

That is, the melt B fed by the melt cooling path 150 passes through the cooling path 153, which is formed in a staggered shape through the inclined inflow path 151, so that heat is transferred to the melt B, Is cooled and solidified.

Thereafter, the movable mold is moved from the stationary mold, and the molded product is taken out to complete the production of the molded product.

The melted material cooling and flowing unit 110 and the melt cooling and fixing unit 130 are connected to each other through the melt cooling path 150 formed by the melt cooling and moving unit 110 and the melt cooling and fixing unit 130 in close contact with each other. The entire structure of the molten light metal casting apparatus using the vacuum pressure can be simply implemented since the melt can be solidified.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

14; A mold section 16; The vacuum generating means
22; Melt press section 100; Melt cooling device
110; Melt cooling section 130; The melt cooling-
150; Melt cooling furnace A; Melt reservoir
B; Melt

Claims (4)

(11) and a stationary mold (12), each of which has a movable and a fixed molding groove formed so as to be capable of forming a molded product in contact with each other by being operated in response to the control of the control unit, A mold part 14 provided with a guide path 13 for the melt so as to communicate with the molding groove and one end connected to one side of the guide path 13 for the melt of the mold part 14, A vacuum generating means 16 provided with a vacuum air take-out tube 15 for driving the inside of the mold portion 14 to a pressure lower than the atmospheric pressure by driving the vacuum generating means 16, The molten metal B is driven by the control of the control unit as the molten metal B stored in the molten metal reservoir A is automatically sucked so that the internal air of the molten metal 14 is sucked out, ) Side A molten light metal casting apparatus 10 using a vacuum pressure including a melt press-feeding section 22, a molten light metal using vacuum pressure capable of rapidly solidifying the melt fed by being driven by the apparatus 10, A melt cooling apparatus for a casting apparatus,
A melt guiding groove 110 and a fixing guide groove for the molten metal are formed on the respective surfaces of the movable mold 11 and the stationary mold 12 of the mold part 14, One end corresponding to the movement of the movable mold 11 is in communication with one end of the guide path 13 for the melt and the other end is connected to the end of the vacuum generating means 16 The melted material which is connected to the vacuum air removing pipe 15 and pressure-fed by the operation of the vacuum generating means 16 and the melt press-feeding portion 22 flows out to the side of the vacuum air take-out pipe 15 of the vacuum generating means 16 Wherein the melt cooling furnace (150) is formed so that the heat can be quickly taken away and solidified before the cooling of the melted material is completed.
The method according to claim 1,
The melt cooling furnace 150 is provided with an inflow passage 16 for introducing the melt B so as to rapidly solidify the melt B fed by the operation of the vacuum generating means 16 and the melt press- A cooling passage 153 for cooling the melted material B extending from the inflow passage 151 and a cooling air passage 153 extending from the cooling passage 153 for discharging vacuum air from the vacuum generating means 16, And a connection path (155) connected to the engine (15). The cooling apparatus of claim 1,
3. The method of claim 2,
The inflow path 151 is formed so as to be inclined so that the melt B to be fed through the melt guiding path 13 does not directly enter the cooling path 153. The cooling path 153 is connected to the inflow path 151 Wherein the molten metal is formed in a staggered shape so as to be automatically solidified as the heat conduction time becomes longer by increasing the distance of the feeding of the molten metal (B) flowing through the molten metal (B).
3. The method according to claim 1 or 2,
Wherein the melt cooling path (150) is formed to have a diameter of 0.8 mm to 1.5 mm.
KR1020150103280A 2015-07-21 2015-07-21 Melt cooling device for melting light metal casting apparatus using a vacuum KR101688204B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127354A (en) * 1985-11-21 1987-06-09 サンド　アクチエンゲゼルシヤフト Monoazo compound
JP2003136217A (en) * 2001-10-29 2003-05-14 Toshiba Mach Co Ltd Ejection pin for vacuum die casting
JP2005329464A (en) * 2004-04-20 2005-12-02 Toshiba Mach Co Ltd Die casting apparatus and reduced pressure casting method
JP2006526506A (en) * 2003-06-03 2006-11-24 ケウン ゴ，ドン Die casting machine and casting method using the same
KR20080099835A (en) 2005-10-21 2008-11-13 한국전자통신연구원 Apparatus and method for encoding and decoding moving picture using adaptive scanning

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127354A (en) * 1985-11-21 1987-06-09 サンド　アクチエンゲゼルシヤフト Monoazo compound
JP2003136217A (en) * 2001-10-29 2003-05-14 Toshiba Mach Co Ltd Ejection pin for vacuum die casting
JP2006526506A (en) * 2003-06-03 2006-11-24 ケウン ゴ，ドン Die casting machine and casting method using the same
JP2005329464A (en) * 2004-04-20 2005-12-02 Toshiba Mach Co Ltd Die casting apparatus and reduced pressure casting method
KR20080099835A (en) 2005-10-21 2008-11-13 한국전자통신연구원 Apparatus and method for encoding and decoding moving picture using adaptive scanning

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
발명의 명칭; 금속의 진공 용해와 주조를 위한 진공 시스템 및 그것을 이용한 진공 용해와 주조방법

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