WO2011052839A1 - Die-casting device - Google Patents

Abstract

The present invention relates to a die-casting device, and more specifically to a die-casting device whereby superior moulded articles can be obtained by ensuring good hermetic sealing properties in the moulding space and the melt sleeve space of the mould, and by expelling internal air to the outside and so precisely maintaining the degree of vacuum. The present invention is a die-casting device in which cast moulding is carried out by injecting a melt into the hollow part of a melt-pressurizing sleeve provided between an immobile-side mould base and a mobile-side mould base and then pressurizing the melt into the moulding space between the mobile mould and immobile mould by means of a melt-pressurizing plunger, wherein the die-casting device comprises: a sealing ring which is disposed on the outer circumferential surface of the melt-pressurizing sleeve; a heating part which is provided on the inside of the melt-pressurizing sleeve and is disposed so as to surround the hollow part of the melt-pressurizing sleeve; and a cooling part which is provided on the inside of the melt-pressurizing sleeve and is disposed adjacent to the sealing ring, and wherein first packing is provided on the diametrically outer surface of the sealing ring, second packing is provided on the diametrically inner surface of the sealing ring, on the first packing there is outer packing which extends into a structure enveloping the periphery of the immobile mould, formed on the immobile-side mould base there is an insertion recess with a structure enveloping the periphery of the immobile mould, and the outer packing is inserted into the insertion recess.

Description

Die Casting Device

The present invention relates to a die-casting apparatus, and more particularly, to a die-casting apparatus which can obtain a more excellent molded article by securing the sealing property of the molding space and the molten metal sleeve space of the mold and maintaining the degree of vacuum precisely by discharging the internal air to the outside. It is about.

Generally, light metals are lighter in weight than titanium (specific gravity 4.5), and typically beryllium (specific gravity 1.85), magnesium (1.74), aluminum (2.7), titanium (4.5), and the like. The earliest practical use is aluminum and titanium is widely used in aircraft materials. From the viewpoint of small specific gravity, alkali metals (1 or less) such as silicon (2.3), yttrium (4.3), sodium, potassium, lithium, etc., and alkaline earth metals such as calcium (1.5) also enter the light metal, but in general, the light metal Point out the four metals listed above as the material.

The earliest practical use was aluminum, and a strong alloy called duralumin was invented in the early twentieth century, which contributed significantly to the development of aircraft, which began to develop when the strength per weight was nearly three times that of general steel. Later, light weight structural materials were needed, and magnesium was industrially produced, resulting in a number of strong magnesium alloys.

In addition, since the mid-1940s, titanium was produced industrially and various titanium alloys were used, making it possible to produce supersonic aircraft today. Beryllium took time to process and improve it to a thin plate, or to improve the viscosity of the finished plate so that it would not crack, but in the mid-1960s, it was used for aerospace development. Also used. In addition, beryllium does not absorb thermal neutrons, and thus is excellent as a structural material for nuclear reactors.

In particular, magnesium is the eighth most abundant element, accounting for about 2.7% of the planet. Magnesium alloy has a specific gravity of 1.79 ~ 1.81, which is light and has a weight reduction effect of about 70% compared to steel, and is applied to a wide range of fields due to its excellent strength, castability, machinability, electromagnetic shielding ability, vibration and shock absorption ability. Its usage is increasing rapidly.

As a representative example of such a light metal casting method, a die casting method is mainly used, and the die casting method includes a hot chamber, a cold chamber, thixomolding, and the like.

In the cold chamber system, the mold casting machine and the light metal melting furnace are separately configured, and the molten molten metal is poured into the injection sleeve of the mold casting machine, and the molten metal is pressed by an injection plunger and injected into the mold. The hot chamber method is a method in which an injection cylinder is installed in a melting furnace and pressurized so that a high temperature molten metal flows into a mold. The thixomolding method is a combination of the conventional injection molding method and the metal die casting method, and uses light metal raw materials in the form of chips such as resin injection.

On the other hand, when magnesium is used as the raw material for the die casting method, it is ignited when it is melted in the air. Therefore, measures to prevent oxidation of the molten metal are necessary. Therefore, when the magnesium alloy is melted, a large amount of flame retardant flux (SF ₆ + CO ₂ mixed gas) or inert gas is injected into the melting furnace. It is regulated. In addition, since the price is also rising, the melting of magnesium alloy by the die casting method has a relatively high production cost in terms of production cost and causes air pollution.

In addition, thixomolding stores raw materials in the form of chips in a hopper, feeds magnesium alloy chips into cylinders, moves them forward by the rotation of the screw, and simultaneously heats them into a slurry phase having a predetermined solid phase rate. The slurry is filled into the molding part of the mold by the fast forward motion of the screw. However, raw materials in the form of chips are quite expensive, and scraps (molding defects, runners, gates) generated during metal forming are also impossible to reuse, which results in high raw materials.

However, in the conventional die casting apparatus, the sealing property of the molten metal sleeve that injects the molten metal into the molding space of the mold or the molding space of the mold is poor so that the vacuum degree in the molding space of the metal mold or the molten metal sleeve decreases, thereby causing the molded product to be cast. There was a disadvantage that the poor quality easily occurs.

The present invention has been made in view of the above points, die-casting to obtain a more excellent cast molding by securing the sealing property of the molding space and the molten metal sleeve space of the mold, and by maintaining the degree of vacuum precisely by discharging the internal air to the outside The object is to provide a device.

Die casting apparatus according to the present invention for achieving the above object,

A die casting apparatus for molding by injecting molten metal into a hollow portion of a molten metal pressure sleeve installed between a stationary mold base and a movable side mold base, and then pressing the molten metal into a molding space between the movable mold and the stationary mold by a molten metal pressure plunger.

A sealing ring disposed on an outer circumferential surface of the molten metal pressure sleeve;

A heating unit installed inside the molten metal pressure sleeve and disposed to surround the hollow portion of the molten metal pressure sleeve;

And a cooling unit installed inside the molten metal pressure sleeve and disposed close to the sealing ring.

A first packing is installed on the outer diameter surface of the sealing ring, a second packing is installed on the inner diameter surface of the sealing ring, and the outer packing extends in a structure surrounding the periphery of the stationary mold on the first packing. The side mold base is formed with a fitting groove having a structure surrounding the fixed mold, characterized in that the outer packing is fitted into the fitting groove.

The heating unit is composed of a heating passage through which the heating medium passes, the heating passage has an inlet and an outlet, characterized in that the heating medium heated to 100 ~ 350 ℃ in the heating passage circulates.

The heating unit is composed of a plurality of heating elements that generate heat by a power source, the heating elements are installed upward from the lower portion of the pressure-molding sleeve, the heating elements are disposed close to the hollow portion of the pressure-molding sleeve, the heating elements are power It characterized in that it is heated to 100 ~ 350 ℃.

The lower end of the molten metal pressure sleeve is characterized in that it has a lower projection protruding in the outer diameter direction.

The second packing is hermetically adhered to the bottom protrusion of the sealing ring.

The cooling unit is installed in the lower projection of the molten pressure sleeve.

The sealing ring is integrally formed with the lower protrusion of the molten metal pressure sleeve, and a cooling unit is installed in the sealing ring.

A heat dissipation unit is installed between the cooling unit and the heating unit.

The heat dissipation unit is characterized by consisting of a hollow heat dissipation space formed between the cooling unit and the heating unit.

The heat dissipation unit is characterized by consisting of a heat dissipation member interposed between the cooling unit and the heating unit.

’자 모양의 단면으로 이루어지고, 상기 제1패킹의 내경면은 평탄하게 형성되고, 상기 제1패킹의 평탄한 내경면은 상기 밀봉링의 외경면의 끼움홈에 결합되고, 상기 제1패킹의 외경면은 ‘∩’자 모양의 융기부를 가지며, 상기 제1패킹의 외경면은 고정측 몰드베이스 및 가동측 몰드베이스의 수용홈에 밀착되어 밀폐성을 가지는 것을 특징으로 한다. The first packing 32 is'

'It is made of a cross-section, the inner diameter surface of the first packing is formed flat, the flat inner diameter surface of the first packing is coupled to the fitting groove of the outer diameter surface of the sealing ring, the outer diameter of the first packing The surface has a '∩' shaped ridge, and the outer diameter surface of the first packing is in close contact with the receiving groove of the fixed side mold base and the movable side mold base, characterized in that it has a sealing property.

The cross section of the outer packing has an 'O' shape, characterized in that the bonding to the first packing and integrally or integrally molded.

A first air discharge passage is formed in the molding space of the fixed mold and the movable mold, and a second air discharge passage is formed in a direction orthogonal to the first air discharge passage, and the second air discharge passage is formed in the air. In communication with the discharge pipe, the first air discharge passage is characterized in that the air discharge blocking pin is installed so as to be forward and backward.

According to the present invention as described above, it is possible to precisely maintain the degree of vacuum of the molding space and the molten metal pressure-sleeving space of the mold through an airtight sealing structure, there is an advantage that can be obtained a better cast molded article.

1 is a perspective view showing a die casting apparatus according to an embodiment of the present invention.

2 is an exploded perspective view showing a state in which the die casting apparatus of the present invention is separated into a fixed side mold base (fixed mold is coupled), a movable side mold base (movable mold is coupled), and a molten metal pressure sleeve.

3 is an exploded perspective view illustrating a state in which the stationary mold is separated from the stationary mold base and the movable mold is separated from the movable mold base in FIG.

4 is a partial cutaway perspective view showing a die casting apparatus according to an embodiment of the present invention.

5 is a cross-sectional view showing a die casting apparatus according to an embodiment of the present invention.

6 is a cross-sectional view showing the molten metal pressure sleeve by the die casting apparatus of the present invention.

FIG. 7 is a cross-sectional view taken along the arrow A-A of FIG. 6.

8 is a partially cut perspective view showing a sealing ring of the die casting apparatus according to the present invention.

9 is a perspective view showing the first packing and the outer packing by the die casting apparatus of the present invention.

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9.

FIG. 11 is a cross-sectional view taken along the line C-C of FIG. 9.

12 is a cross-sectional view showing another embodiment of the sealing ring of the present invention.

13 is a cross-sectional view showing another embodiment of the heating unit of the present invention.

14 to 24 are views sequentially showing the operation relationship of the die casting apparatus according to the present invention.

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

1 to 13 show a die casting apparatus according to an embodiment of the present invention.

As shown, the die casting apparatus of the present invention is a fixed side mold base 10, a movable side mold base 20, a fixed side mold base 10 and a movable side which are installed to be movable relative to the fixed side mold base 10. It includes a molten metal pressure sleeve (30) sealingly installed between the side mold base (20).

The stationary side mold base 10 is fixedly installed at the frame side of the apparatus, and the stationary mold 15 is replaceably installed at the center of one surface of the stationary side mold base 10. A molten metal injection opening 11 is formed at one side of the fixed side mold base 10, and the molten metal injection opening 11 penetrates the fixed mold 15. The molten metal injection sleeve 50 is installed in the molten metal injection opening 50, and the hollow portion of the molten metal injection sleeve 50 has a hollow portion in communication with the molten metal injection opening 11. The molten metal injection plunger 51 is installed in the molten metal injection opening 11 so as to be movable back and forth. A molten metal inlet 52 is formed at one side of the molten metal injecting sleeve 50, and a molten metal injecting device 80 is installed at the molten metal inlet 52 as shown in FIG. 14, and the molten metal injecting device 80 is a vacuum melting chamber. It is comprised so that the molten metal of (not shown) may be introduce | transduced into the molten metal injection port 52 side. On one side of the stationary mold 15, a first molten metal space 27a communicating with the molten metal injection opening 11 is formed, and the molten metal injection plunger 51 is melted by an advance of the molten metal injection plunger 51. The molten metal introduced by 80 is injected into the molten metal injection opening 11 side.

An air discharge pipe 16 is formed on the other side of the fixed side mold base 10, and the air discharge pipe 16 is provided with a vacuum valve 16a as shown in FIG. 5.

A first molding portion 26a is formed at the central portion of one surface of the stationary mold 15, and the first air discharge passage 12a is formed to communicate with the first molding portion 26a, and the first air discharge passage ( The second air discharge passage 12b is formed in communication with 12a). Although the first molding part 26a of the fixed mold 15 is illustrated as a groove structure in the drawing, the first molding part 26a of the present invention is not limited thereto, and may be formed as a protrusion or other various structures. .

The first molten metal space 27a communicates with the first molding portion 26a of the stationary mold, and the molten metal is configured to be injected into the first molten portion 26a from the first molten water space 27a.

The first air discharge passage 12a is formed through the stationary mold 15 and the fixed side mold base 10, and the first air discharge passage 12a has an air discharge blocking pin 17 as shown in FIG. ) Is installed to move forward and backward. The air discharge blocking pin 17 is configured to prevent air from penetrating into the first air discharge passage 12a and the air discharge pipe 16 by closing the first air discharge passage 12a.

The second air discharge passage 12b is formed through the stationary mold 15 and the fixed side mold base 10, and the second air discharge passage 12b is the air discharge tube 16 of the fixed side mold base 10. It is formed to communicate with.

The movable side mold base 20 is installed to be movable with respect to the stationary side mold base 10, and the movable mold 25 is replaceably installed at the center of one surface of the movable side mold base 20, and the movable mold 25 is provided. ) Is disposed to face the stationary mold 15 of the stationary side mold base 10. Accordingly, the movable mold 25 and the fixed mold 15 may be sealed to each other by the movable mold base 20 moving in contact with the fixed mold base 10 side.

As shown in FIG. 5, the movable mold 25 has a second molding portion 26b at the center of one surface thereof, and the second molding portion of the movable mold 25 is sealed by sealing the movable mold 25 and the fixed mold 15. 26b) is aligned with the first molding portion 26a of the stationary mold 15 to form a molding space 26 for forming a predetermined casting molding.

A second hot water receiving space 27b is formed close to the second molding portion 26b of the movable mold 25, and the movable mold 25 is closed by sealing the movable mold 25 and the fixed mold 15. The two molten metal receiving space 27b is configured to communicate with the second molding portion 26b so that the molten metal is injected from the second molten metal receiving space 27b to the second molding portion 26b.

As shown in FIG. 5, the second molten metal space 27b of the movable mold 25 is aligned with the first molten water space 27a of the fixed mold 15 to accommodate the molten metal injected through the molten metal injection opening 11. The molten water receiving space 27 is formed, and the molten water receiving space 27 is formed to communicate with the molding space 26 of the stationary mold 15 and the movable mold 25.

The molten metal pressure sleeve 30 is sealably installed between the stationary side mold base 10 and the movable side mold base 20, and a hollow portion 30a is formed therein, and the hollow portion 30a is fixed. In communication with the molten metal receiving space 27 of the mold 15 and the movable mold 25. In the hollow portion 30a and the molten water receiving space 27 of the molten metal pressure sleeve 30, as shown in FIG. 5, the molten metal pressure plunger 35 is installed to be able to move forward and backward. As the molten metal pressurizing plunger 35 is advanced, the molten metal pressurizing plunger 35 presses the molten metal in the hollow part 30a of the molten metal pressurizing sleeve 30 and the molten metal receiving space 27 into the molding space 26. Can be.

The fixed side mold base 10 and the movable side mold base 20 each have accommodation grooves 10a and 20a in which the outer circumferential surface of the molten metal pressure sleeve 30 is accommodated. On the other hand, the molten metal pressure sleeve 30 is firmly coupled to the receiving groove (10a) side of the fixed side mold base 10 through a plurality of fasteners (39).

The molten metal pressing sleeve 30 has an annular protrusion having an upper end and a lower end protruding in an outer diameter direction as shown in FIG. 6, and a sealing ring 31 is installed on the outer diameter surface of the lower protrusion of the molten metal pressing sleeve 30. The first packing 32 is installed on the outer diameter surface of the sealing ring 31, and the second packing 33 is installed on the inner diameter surface of the sealing ring 31. Accordingly, the first packing 32 is interposed between the outer diameter surface of the sealing ring 31 and the lower inner diameter surfaces of the receiving grooves 10a and 20a of the fixed side mold base 10 and the movable side mold base 20. The second packing 33 is interposed between the inner diameter surface of the sealing ring 31 and the outer diameter surface of the lower protrusion of the molten metal pressure sleeve 30, and the second packing 33 is formed on the lower protrusion of the molten metal pressure sleeve 30. It is in airtight contact with the outer diameter surface.

In addition, the outer packing 38 is connected to the first packing 32 in a structure surrounding the periphery of the stationary mold 15, as shown in FIGS. 2, 3 and 9, and the stationary side mold base 10. The fitting groove 18 is formed in a structure surrounding the fixed mold 15, the outer packing 38 is fitted to the fitting groove (18). Therefore, the outer packing 38 is in contact with each other of the movable side mold base 20 and the fixed side mold base 10 when the fixed side mold base 10 and the movable side mold base 20 are in contact with each other. By sealingly interposing, the shaping space 26 and the molten metal space 27 of the stationary mold 15 and the movable mold 25 can be reliably sealed with respect to the external space. In addition, the outer packing 38 may be integrally formed on the first packing 32 side via an adhesive or the like to the first packing 32 side.

’자 모양의 단면으로 이루어진다. 제1패킹(32)의 내경면은 평탄하게 형성되고, 이 제1패킹(32)의 내경면은 밀봉링(31)의 외경면의 끼움홈에 결합되고, 제1패킹(32)의 외경면은 ‘∩’자 모양의 융기부를 가지며, 이 제1패킹(32)의 외경면은 고정측 몰드베이스(10) 및 가동측 몰드베이스(20)의 수용홈(10a, 20a)측에 기밀하게 밀착된다. The first packing 32, the second packing 33, the outer packing 38 is made of a sealing material such as rubber, etc., the first packing 32 is shown in FIG.

'It consists of a cross-section of the shape. The inner diameter surface of the first packing 32 is formed flat, the inner diameter surface of the first packing 32 is coupled to the fitting groove of the outer diameter surface of the sealing ring 31, the outer diameter surface of the first packing 32 Has a '∩' shaped ridge, and the outer diameter surface of the first packing 32 is hermetically adhered to the receiving grooves 10a and 20a of the fixed side mold base 10 and the movable side mold base 20. do.

And, the outer packing 38 is made of a circular cross section as shown in FIG. In addition, the second packing 33 has a circular cross section as shown in FIG. 8.

As such, the first packing 32, the second packing 33, and the outer packing 38 seal the molten metal pressure sleeve 30 between the fixed side mold base 10 and the movable side mold base 20. By combining the molten water receiving space 27 and the molding space 26 has the advantage that the hermetic sealing.

As illustrated in FIG. 6, the molten metal pressure sleeve 30 is provided with a heating unit for preventing the temperature of the molten metal injected into the hollow portion 30a from being lowered and hardened. One embodiment of the heating unit is illustrated in FIG. 6 and FIG. As shown in FIG. 7, the heating medium may pass through the heating passage 34. The heating passage 34 is disposed to surround the hollow portion 30a of the molten metal pressure sleeve 30, and the heating passage 34 is installed as close as possible to the hollow portion 30a of the molten metal pressure sleeve 30. Thus, a heat medium such as oil heated at 100 to 350 ° C. flows through the inlet 34a and passes through the heating passage 34, and then is discharged through the outlet 34b of the heating passage 34.

13 shows another embodiment of the heating unit. The heating portion of FIG. 13 may be composed of a plurality of heating bodies 44 such as an electric heater, and the heating bodies 44 are formed in a rod shape. The plurality of heating bodies 44 are installed upward from the lower portion of the molten metal pressure sleeve 30, and the heating bodies 44 are disposed close to the hollow portion 30a of the molten metal pressure sleeve 30, and this heating body 44 ) Are heated by a power source and heated to approximately 100 ~ 350 ℃.

In addition, a cooling unit is installed in the lower protrusion of the molten metal pressure sleeve 30, and in particular, the cooling unit includes an installation cooling passage 36 close to the sealing ring 31, and the cooling water circulates through the cooling passage 36. As the heat of the heating passage 34 is conducted to the first and second packings 32 and 33 by the cooling passage 36, it is possible to prevent the first and second packings 32 and 33 from melting. Cooling water flows in through the inlet 36a and passes through the cooling passage 36 and is discharged through the outlet 36b. On the other hand, the cooling passage 36 may form a “C” shaped passage by closing between the inlet 36a and the outlet 36b.

In addition, a heat radiating unit 37 may be installed between the cooling passage 36 and the heating passage 34. The heat radiation part 37 can prevent the heat of the heating passage 34 from being conducted to the cooling passage 36.

According to an embodiment, the heat dissipation part 37 may be configured as a hollow heat dissipation space formed between the cooling passage 36 and the heating passage 34. Alternatively, the heat dissipation unit 37 may be composed of a heat dissipation member interposed between the cooling passage 36 and the heating passage 34. However, in the low temperature working environment, the heat radiating unit 37 may be omitted.

The molten metal pressure sleeve 30 is supported by a plurality of auxiliary supports 39 whose one end is mounted to one end of the fixed side mold base 10, and the auxiliary support 39 is a plurality of fasteners 39a. Is mounted by. Through the auxiliary support 39, the molten metal pressure sleeve 30 may be more firmly coupled to the fixed side mold base 10.

Meanwhile, as shown in FIG. 12, the sealing ring 31 may be integrally formed at the lower end of the molten metal pressure sleeve 30. The cooling passage 36 is disposed in the sealing ring 31, and the first packing 32 is installed on the outer diameter surface of the sealing ring 31.

14 to 24 will be described in detail the operation relationship by the die casting apparatus of the present invention as follows.

In the die casting apparatus of the present invention, as shown in FIG. 14, the movable side mold base 20 is spaced apart from the fixed side mold base 10.

Then, as shown in FIG. 15, the movable mold base 20 is moved to the stationary side mold base 10 side to seal the movable side mold base 20 and the stationary side mold base 10 so that The molding space 26 is formed by the first molding part 26a and the second molding part 26b of the movable mold 25. Thereafter, the air discharge blocking pin 17 is reversed to communicate the first air discharge passage 12a and the second air discharge passage 12b with each other, and the vacuum valve 16a of the air discharge pipe 16 is opened to be molded. A vacuum environment is created by discharging the air in the hollow portion 30a of the space 26, the molten water receiving space 27, and the molten metal pressure sleeve 30.

When a predetermined vacuum environment is formed in the hollow space 30a of the molding space 26, the molten metal receiving space 27, and the molten metal pressure sleeve 30, the air discharge blocking pin 17 is discharged as shown in FIG. The molding space 26 is closed by advancing to the end of the passage 12a.

Subsequently, the molten metal injection plunger 51 and the molten metal pressurizing plunger 35 are reversed as shown in FIG. 17, and the molten metal inlet 52 is opened by the molten metal introducing device 80 as illustrated in FIG. 18. Inject into). When a predetermined amount of molten metal is injected into the molten metal injection sleeve 50, the molten metal inlet 52 is closed by the molten metal introduction device 80 to stop the molten metal as shown in FIG. 19.

Thereafter, as shown in FIG. 20, the molten metal injection plunger 51 is advanced to push the molten metal in the molten metal injection sleeve 50 to the molten water space 27 side. Next, as shown in FIG. 21, the molten metal pressurizing plunger 35 is advanced toward the molten metal receiving space 27 to press the molten metal into the molding space 26.

Then, when the molten metal in the molding space 26 is cooled and cured, the molten metal injection plunger 51 and the molten metal pressure plunger 35 are reversed as shown in FIG. 22. At this time, the molten metal injection plunger 51 reverses the molten metal injection plunger 51 so as to be located ahead of the molten metal injection port 52.

Thereafter, the movable mold base 20 is moved and separated from the fixed mold base 10 as shown in FIG. 23, and then the molding is separated between the fixed mold 15 and the movable mold 25 as shown in FIG. .

Claims (13)

A die casting apparatus for molding by injecting molten metal into a hollow portion of a molten metal pressure sleeve installed between a stationary mold base and a movable side mold base, and then pressing the molten metal into a molding space between the movable mold and the stationary mold by a molten metal pressure plunger. A sealing ring disposed on an outer circumferential surface of the molten metal pressure sleeve; A heating unit installed inside the molten metal pressure sleeve and disposed to surround the hollow portion of the molten metal pressure sleeve; And a cooling unit installed inside the molten metal pressure sleeve and disposed close to the sealing ring. A first packing is installed on the outer diameter surface of the sealing ring, a second packing is installed on the inner diameter surface of the sealing ring, and the outer packing extends in a structure surrounding the periphery of the stationary mold on the first packing. The side mold base has a fitting groove is formed in a structure surrounding the periphery of the mold, die casting apparatus, characterized in that the outer packing is fitted. The method of claim 1, The heating unit is composed of a heating passage through which the heating medium passes, the heating passage has an inlet and an outlet, the heating die is heated die casting apparatus characterized in that the heating medium is heated to 100 ~ 350 ℃. The method of claim 1, The heating unit is composed of a plurality of heating elements that generate heat by a power source, the heating elements are installed upward from the lower portion of the pressure-molding sleeve, the heating elements are disposed close to the hollow portion of the pressure-molding sleeve, the heating elements are power Die casting apparatus, characterized in that heated to 100 ~ 350 ℃. The method of claim 1, Die casting apparatus characterized in that the lower end of the molten pressure sleeve has a lower projection protruding in the outer diameter direction. The method of claim 1, And the second packing is hermetically adhered to the lower protrusion of the sealing ring. The method of claim 4, wherein And the cooling unit is installed in the lower protrusion of the molten metal pressure sleeve. The method of claim 4, wherein The sealing ring is formed integrally with the lower protrusion of the melt pressure sleeve, the die casting apparatus, characterized in that the cooling unit is installed in the sealing ring. The method of claim 1, Die casting apparatus, characterized in that the heat dissipation unit is installed between the cooling unit and the heating unit. The method of claim 8, The heat dissipation unit is a die casting apparatus, characterized in that consisting of a hollow heat dissipation space formed between the cooling unit and the heating unit. The method of claim 8, The heat dissipation unit is a die casting device, characterized in that consisting of a heat dissipation member interposed between the cooling unit and the heating unit. The method of claim 1, The first packing 32 is'

'It is made of a cross-section, the inner diameter surface of the first packing is formed flat, the flat inner diameter surface of the first packing is coupled to the fitting groove of the outer diameter surface of the sealing ring, the outer diameter of the first packing The surface has a '∩' shaped ridge, the outer diameter surface of the first packing is in close contact with the receiving groove of the fixed side mold base and the movable side mold base, characterized in that the die casting device. The method of claim 1, Cross-section of the outer packing is "O" shaped, die-casting apparatus, characterized in that the bonding to the first packing and integrally or integrally molded. The method of claim 1, A first air discharge passage is formed in the molding space of the fixed mold and the movable mold, and a second air discharge passage is formed in a direction orthogonal to the first air discharge passage, and the second air discharge passage is formed in the air. In communication with the discharge pipe, die casting apparatus, characterized in that the air discharge blocking pin is installed in the first air discharge passage to be forward and backward.

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