JP2539333B2 - Continuous casting method of die casting wheel and die casting machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting method for a die casting wheel and a die casting machine by a die casting machine in which molten metal is pressed into a die to continuously produce cast products.

[0002]

2. Description of the Related Art Conventionally, for example, in a casting method for a light alloy wheel of a two-wheeled vehicle, a low-speed, low-pressure gravity casting method or a low-pressure casting method requires finishing after casting. Since there are many, die-casting method is also widely used to press molten metal into a mold to produce a large amount of highly accurate castings.

FIG. 10 outlines a method of casting a light alloy wheel or the like by a conventional die casting machine, in which a movable platen is moved in the direction of a fixed platen and a fixed mold and a movable mold are clamped to form a mold cavity. Then, the molten metal is forced into the inside from the sprue sleeve by a plunger.

In casting of wheel products and the like by the conventional die casting method, it is necessary to cut the gate runner portion formed when the molten metal is press-fitted into the cavity, so that the fixed mold is fixed to the fixed platen side, Not only the movable mold of the movable platen moves back and forth with respect to the fixed mold, but the moving part is separated from the end opening surface of the sprue sleeve as shown in FIGS. It can be moved back and forth to the movable platen side. When this moving part is formed so as to be separable from the fixed plate and die casting is performed, the mold is clamped (the moving part is in close contact with the fixed plate, and the movable plate is joined to the left end surface of the moving part). In this state, when the plunger is driven and the molten metal is pushed into the cavity, the gate and the gate runner portion are formed at the connecting portion between the cavity and the gate sleeve. Therefore, after the press-fitting, the movable part is sandwiched by the mold cavity, the L-shaped gate, and the sprue runner part. In this state, the movable plate is in the mold open state (left direction in the figure).
When moved to, the moving part also moves to the left due to the holding force of this product (FIG. 11 shows this stage).
Further, in returning to the fixed plate side, when the movable platen is moved closer to the fixed platen side, the mold clamping is performed by directly pressing the moving portion in the right direction.

Further, it is necessary to apply a release agent necessary for separating the press-molded molten metal from the mold cavity to the inner wall surface of the mold, and conventionally, brush painting is manually carried out, or a hand gun or the like. Spray coating work was being performed.

[0006]

By the way, conventionally, when the movable plate moves to the mold open state after the above-mentioned molten metal press-in, the moving part also moves together to shorten the cycle time. The gate runner portion is cut by a cutting blade drive mechanism (not shown). For this reason, a product defect is likely to occur due to a slight timing shift of each component member, which causes a particularly large loss for a product in a large lot unit.

Further, since the moving part accompanies the movable plate only by the product holding force of the molten metal, a peeling part is generated in the gate due to the tensile force and the gate part is divided. If the movable mold is moved to the left while the mold is locked and the mold is opened, not only the remaining products become defective products but also the subsequent products become defective, and it is difficult to continue casting itself. There was a problem that became.

Further, the work of applying the release agent for separating the mold and the product mainly depends on the manual work or the like. Therefore, since the work is carried out to avoid uneven coating, it takes a long working time. The work efficiency was inferior and hindered from shortening the cycle time.

The present invention has been made in view of the above conventional problems, and an object thereof is to prevent a breakage of a gate portion communicating with the inside of a cavity and to ensure quality almost completely. It is an object of the present invention to provide a continuous casting method for a die casting wheel, and to provide a die casting machine capable of rapidly and uniformly applying a release agent coating operation to drastically reduce the overall die casting cycle time.

[0010]

In order to achieve the above object, the present invention provides a stationary platen 12 provided with a semi-movable mold 16 which is provided so as to be able to come into contact with and separate from the main body 20 side, and this stationary platen. 1
A movable platen 14 having a movable mold 18 facing the two semi-movable molds 16 and moving back and forth in the direction of the fixed plate 12;
After press-fitting the molten metal M into the mold cavity 10, the movable platen 1
When the mold 4 performs the mold opening operation, the semi-movable mold 16 is moved in the mold opening direction in synchronization with the mold opening operation of the movable platen 14 by a required driving force, and the intermediate position before the movable platen 14 reaches the mold full opening position. Including a step of stopping the movable platen 14 and the semi-movable die 16 at the position, shirring the gate spout runner portion 50 continuous to the product in that state, and returning the latter half movable die 16 to the main body portion 20 side. It consists of a continuous die casting wheel casting method.

Further, in the method for continuously casting a die casting wheel according to claim 1, before the molten metal M is press-fitted into the mold cavity 10, a charged powder release agent is supplied into the mold cavity 10. At the same time, the inside of the mold cavity 10 is depressurized to electrodeposit the powder mold release agent on the inner walls of the molds 16 and 18, and then a step of press-fitting the molten metal M is performed, which is a continuous casting method of a die casting wheel. It may be done.

Further, in the die-casting machine according to the third aspect of the present invention, the fixed platen 12 provided with the semi-movable mold 16 which is provided so as to be able to come in contact with and separate from the main body 20 side, and the semi-movable metal plate of the fixed platen 12 wherein the movable plate 14 to move forward and backward in the stationary platen 12 direction has a movable die 18 that faces the mold 16, the molten metal
After press-fitting M into the mold cavity 10, the movable platen 14
When the mold opening operation is performed, the semi-movable mold 16 is driven by the required driving force.
The movable platen 14 is moved in the mold opening direction in synchronization with the mold opening operation.
Of the melt spout M
After shirring, attach the semi-movable mold 16 to the main body 20 side.
It may be possible to include a drive unit 32 for returning to
Yes.

[0013]

[Operation] When the movable plate performs the mold opening operation after the molten metal is press-fitted into the mold cavity, the semi-movable mold is moved in the mold opening direction by the required driving force in synchronization with the mold opening operation of the movable plate. The movable platen and the semi-movable mold are stopped at an intermediate position before reaching the mold fully open position of the movable plate, and the gate runner part continuous with the product is shirred in that state, and the latter half of the movable mold returns to the main body side and moves. To do. Separately from the drive of the movable platen, the intermediate moving unit is moved by the hydraulic drive unit in the direction of the movable platen independently.
In addition, by moving the movable plate in synchronism with the movement of the movable plate, the reliability of the operation is ensured, the remaining gate is prevented, the product precision is stabilized, and the overall die casting wheel continuous casting work efficiency is improved. Further, before the molten metal is pressed into the mold cavity, a charged powder mold releasing agent is supplied into the mold cavity and the inside of the mold cavity is depressurized to apply the powder mold releasing agent to the mold inner wall. After electrodeposition, a molten metal press-in process is performed.
Therefore, the work of coating the release agent on the inner surface of the mold can be performed at high speed.

[0014]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a view showing a main part of a horizontal cold chamber type die casting machine according to an embodiment of a method for continuously casting a die casting wheel according to the present invention, in which the die is clamped. In the figure, a mold cavity 10 is formed in a substantially central portion, a fixed plate 12 is arranged on the right side of the mold cavity 10, and a movable plate 14 is provided on the left side.

The fixed platen 12 includes a semi-movable mold 16 provided on the end side, and the movable platen 14 has a movable mold 18 which is closely contacted with or separated from the semi-movable mold 16 in a face-to-face manner. I have it. These semi-movable mold 16 and movable mold 1
A mold is composed of 8 and the mold cavity 10 formed when these are closely joined to form a desired product shape.

The semi-movable mold 16 is a main body portion 20 of the fixed platen 12.
It is possible to move horizontally with respect to. That is,
An intermediate moving portion 22 is provided so as to be movable back and forth in the horizontal direction with respect to the main body portion 20 via a guide rod, and the semi-movable die 18 is provided at a position where the intermediate moving portion 22 faces the movable die 18. It is provided. As will be described later, the intermediate moving part 22 moves in the movable plate direction independently of the movable platen 14 via the drive device, and independently returns in the main plate part 20 direction of the fixed platen.

As shown in FIGS. 2 and 3, the movable platen 14 is guided by the tie bar 24 with respect to the fixed platen 12 in the sliding movement in the opposing direction. FIG. 2 is a view showing a surface of the intermediate moving section 22 on the semi-movable mold 16 side, and four tie bars 24 are penetrated at each corner of the substantially square main body section 20 on the background side. The face shape shown on the inner side of the intermediate moving portion 22 is shown. This intermediate moving part 22
A wheel-shaped semi-movable mold 16 is fitted to the base of the intermediate moving part 22 at the center of the. This mold uses a sliding type structure divided into three as shown in Japanese Utility Model Laid-Open No. 2-1535, for example, and a complicated shape of a wheel is cast by a core. That is, three pairs of fitting projections 26 directed from the three directions to the center side in FIG. 2 are provided, and in cooperation with the fitting recesses of the movable mold 18, which will be described later, the sliding die is positioned in the traveling direction. I do. Reference numeral 28 is a receiving hole of the pressure reducing device provided on the movable platen 14 side when the movable platen 14 abuts and performs mold clamping.

Further, in FIG. 6, the side surface of the main body portion 20 of the intermediate moving portion 22 is formed as a flat plate surface. Further, apart from the tie bar 24 which guides the horizontal movement of the movable plate by inserting the fixed plate 12 and the movable plate 14 described above, four drive rods 30 are provided by being fitted to the ends of the intermediate moving portion. As a result, the intermediate moving section 22 is moved toward and away from the main body section 20 by the hydraulic drive section 32 as a drive section provided separately from the driving force of the mold clamping drive ram on the movable platen 14 side.

Further, as shown in FIGS. 4 and 6, a shirring mechanism 34 is provided above the surface of the intermediate moving portion 22 which is in contact with the main body portion 20. That is, a bracket 36 is provided above the intermediate moving portion 22, a shearing cylinder 38 is attached, and a cutting blade 40 provided at the lower end portion is moved up and down by hydraulic drive or the like.

On the other hand, a gate 42 is provided at a substantially central portion of the intermediate moving portion 22 from the inner wall side of the semi-movable die 16 to the die cavity 10.
In the horizontal direction.

Further, as shown in FIG. 4, a sprue sleeve 44 is provided in the main body portion 20 toward the side of the intermediate moving portion 22, and a plunger rod 46 is provided therein so as to be slidable in the horizontal direction in the figure. ing. Then, the plunger rod 46 is driven by a hydraulic drive device (not shown) via the press-fitting ram.
By pushing the pushing ram 48 provided at the end of the mold, the molten metal charged in the front side of the pushing ram 48 is moved to the mold cavity 10.
It is to be pressed in.

In FIG. 1, the inlet 42a on the surface side of the intermediate moving portion 22 of the gate 42 which is in contact with the main body portion 20 is
It is provided higher than the surface side end of the sprue sleeve 44 in contact with the intermediate moving portion 22. In the mold clamped state, a passage is formed upward from the sprue sleeve 44 to form an entrance 4 of this gate.
A sprue runner portion 50 is formed as a concave portion on the most end side of the sprue sleeve 44 of the main body portion 20 so as to communicate with the 2a.

As a result, the molten metal is poured into the mold cavity 10
When it is cast into the inside, the molten metal is also filled in the L shape in the gate runner portion 50 formed by the gate 42 and the extrusion ram. Then, the gate runner portion 50 is cut by lowering the cutting blade 40 of the shearing mechanism 34.

Further, in FIG. 1, the sprue sleeve 44 is formed in a cylindrical shape, but a hot water supply port 52 for introducing a required molten metal is provided on the upper surface side on the base side thereof.

One feature of the present invention is that a powder supply port 54 for supplying a mold release agent into the mold cavity 10 is provided at an intermediate position between the hot water supply port 52 of the sprue sleeve 44 and the mold side. It is provided.

The powder supply port 54 is connected to the sprue sleeve 44.
Is opened on the upper surface side thereof, and a charging device 58 and a powder release agent supply device 60 are connected to this opening via a conduit 56. The charging device 58 is for generating a high voltage of, for example, about 30,000 volts to generate an arc voltage at a required portion of the conduit to apply an electric charge to the powder flowing through the conduit. Further, the powder supply device holds the powder release agent in a floating state inside the container, and is provided with a blower fan to supply the powder release agent from the conduit 56 to the powder supply port 54 side.

As the powder release agent, for example, a powdery release agent base material containing an inorganic compound such as a metal oxide as a main material,
It is preferable to use a metal soap that imparts adhesiveness thereto, or a mixture of an organic compound such as a polymer compound.

FIG. 3 is an explanatory view of the movable platen 14 as seen from the side of the movable mold 18, and the fixed platen body 20 is also provided at each corner of the substantially square movable platen body which is the background side. Insert it 4
A book tie bar 24 is pierced. The movable platen 14 is placed on a rail 62, and moves back and forth along the rail 62 in the direction of the fixed platen 12.

In FIG. 3, a movable mold 18 is attached to the central portion of the substantially face shape on the inner side. Further, as described above, the mold according to the embodiment is provided with the three sliding cores 64a, 64b, 64c for casting the peripheral edge of the product.

A fitting concave portion 66 is provided at a position corresponding to the fitting convex portion 26 of the semi-movable die 16 described above, and three pairs of two fitting portions are provided so as to face each other with a gap.
Further, the core driving cylinders 68 are arranged at required spaced positions in the direction of approximately 120 degrees with the movable mold 18 at the center.
In addition, the rod of the core driving cylinder 68 is arranged in the gap between the fitting recesses 66 of each pair. Then, the sliding cores 64a to 64c are fixed to the end portion of the rod, and the cylinders 68 are synchronously advanced and retracted to move and retract the core 64 to the set position.

FIG. 7 to FIG. 9 show details of a known sliding core type configuration in which the guide portion configuration in the mold direction is partially different, and the sliding cores 64a to 64c are substantially the same. Have the same configuration. Then, for example, the sliding core 64a forms a lateral cavity mold 70 that defines a part of the cavity 10, and a sliding block 74 that holds and holds the lateral cavity mold 70 and slides and displaces it on a mold base 72.
It consists of and.

As shown in FIG. 1, the pressure reducing device 76 provided with a required electromagnetic valve mechanism and the like is connected to the mold cavity 10 formed by the movable mold 18 as well.
It is attached above 8. In the figure, reference numeral 78 denotes an extruding pin for extruding the product toward the fixed platen 12 at the fully open position of the movable platen 14 after the casting to separate the product from the movable mold 18,
Is an extrusion plate attached to the base of the extrusion pin 78.

Next, a continuous casting method using this die casting machine will be described. First, the molten metal is held in a prescribed temperature range in an aluminum alloy material holding furnace whose components are adjusted (not shown). Movable plate 14 via the mold clamping drive ram
Is moved in the direction of the fixed platen 12 to perform the casting machine mold closing operation.

FIG. 1 shows a state in which this mold closing operation is completed. The movable platen 14, the intermediate moving part 22 and the main body part 20 are shown.
Are in close contact with each other, and the two molds 16 and 18 face each other so as to form the mold cavity 10. Then, the mold cavity 1 is inserted through the gate 42 and the sprue runner portion 50.
0 and the inside of the sprue sleeve 44 communicate with each other.

After the mold is clamped, the plunger rod 46 advances to close the hot water supply port 52 and stop the extrusion ram 48 at a position where it is in communication with the interior of the downhole sleeve 44. Next, the shut valve (not shown) of the decompression device 76 descends to reduce the pressure inside the mold cavity 10 and the sprue sleeve 44.

When the set depressurized state is reached,
The powdery mold release agent supply device 60 sends out the suspended powdery mold release agent. At this time, the powder release agent is charged when passing through the charging device 58 provided before reaching the powder release agent supply port 54. Then, the charged powdery mold release agent passes through the sprue sleeve 44 to reach the mold cavity 10, and is electrodeposited on the surfaces of the semi-movable mold 16 and the movable mold 18. In this way, since the charged powder is electrically electrodeposited on the mold surface, the release agent can be applied at a very high speed and can be applied uniformly without uneven coating, resulting in reliable operation. Will be held.

Next, after the powder releasing agent is discharged in a specified amount, the shut valve of the decompression device 76 retracts, and the plunger rod 4
6 retreats to the position where hot water supply port 52 is opened.
Then, an unillustrated lubrication ladle pours into the hot water supply port 52,
Thereafter, the plunger rod 46 changes the injection speed in three steps, and the molten metal M is introduced into the mold cavity 10 by, for example, 5 times.
Press in at a pressure of about 00 Kg / cm2. At this time, while the plunger rod 46 is moving, the inside of the cavity is depressurized to a set range pressure by the depressurization device 76 before the molten metal reaches the inside of the cavity. At the same time, the molten metal is filled in the cavity and a high pressure is applied through the plunger rod, and the pressure is maintained for, for example, 2 to 3 seconds. After that, the two-wheeled light alloy wheel is molded by being cooled by the cooling water circulating inside the mold. At this time, as described above, the gate 42
Also, the sprue runner portion 50 is filled with the molten metal whose surface is instantly solidified.

According to the continuous casting method of the die casting machine according to the present invention, thereafter, the movable platen is driven by the drive unit in synchronization with the movement of the movable plate 14 from the state of being filled with the molten metal to the left in the state of FIG. The intermediate moving part 22 is moved to the left via the rod 30 and stopped at the intermediate position before the mold fully open position as shown in FIG.

Then, in this stopped state, the intermediate moving unit 2
The cutting blade 40 of the shearing mechanism 34 attached to the upper part of 2 descends to cut the gate runner portion 50. As a result, product defects due to subtle shifts in operation that were caused by shirring of the sprue runner during conventional open movement,
Die casting can be performed continuously and at high speed smoothly and with high accuracy without causing damage to the molded product due to the division of the gate portion or the occurrence of operation stoppage.

By cutting the sprue runner portion 50, the molded product filled in the mold cavity 10 can be taken out from the mold. After that, the movable platen 14 that has been stopped in the middle restarts the mold opening operation, and the intermediate moving unit 22 moves the main unit 2
Move back to 0 side. Then, as shown in FIG. 5, the mold is moved to the fully opened state. At this time, the sliding core 64 is retracted by the core driving cylinder 68 to release the mold holding of the peripheral edge of the molded product,
Thereafter, the molded product is pushed out by the push-out pin 78 and carried out by a carry-out device (not shown).

The casting cycle of the die casting method according to the present invention has been described above in detail. The point is that a semi-movable mold is required when the movable plate performs the mold opening operation after the molten metal is press-fitted into the mold cavity. It is moved in the mold opening direction in synchronization with the mold opening operation of the movable plate by the driving force, and the movable plate and the semi-movable mold are stopped at the intermediate position before reaching the mold fully open position of the movable plate, and the product continues in that state. This includes the step of shirring the sprue runner part and the latter half of the movable mold returning to the main body side, and the separation of the powder charged in the mold cavity before the molten metal is pressed into the mold cavity. The point of the continuous casting method of the die casting wheel of the present invention is that the powder mold releasing agent is electrodeposited on the inner wall of the mold by supplying the mold agent and depressurizing the inside of the mold cavity, and then the molten metal is pressed in. There is.

This cycle process is completed in 60 to 80 seconds, and it takes about 3 minutes to complete one cycle in the conventional production of the same type two-wheel wheel by die casting. It has been understood, and has been experimentally proved, how much shorter the work time has been achieved compared to.

The method for continuously casting a die casting wheel and the die casting machine according to the present invention are not limited to the configurations of the above-described embodiments, and may be arbitrarily modified without departing from the spirit of the invention described in the claims. Good as a matter.

As described above, according to the method for continuously casting a die casting wheel according to the first aspect, a semi-movable mold is required when the movable plate performs the mold opening operation after the molten metal is pressed into the mold cavity. By moving the movable plate in the mold opening direction in synchronization with the mold opening operation of the movable plate, and stopping the movable plate and the semi-movable mold at an intermediate position before reaching the mold fully open position of the movable plate,
In that state, we decided to include a step of shirring the continuous sprue runner part on the product and returning the movable mold to the main body side in the latter half, so that the overall cycle time can be significantly shortened and the shirring operation timing can be shortened. It is possible to continuously manufacture high-precision die cast wheel molded products without causing misalignment. Further, since the gate portion is not peeled off, reliability of operation is ensured and effectiveness of mass production can be ensured.

Further, according to the method for continuously casting a die casting wheel according to the second aspect, before charging the molten metal into the mold cavity, the charged powder release agent is supplied into the molten metal supply section and the mold cavity is also supplied. By depressurizing the inside and electrodepositing the powder release agent on the inner wall of the mold, and then performing the press-in process of the molten metal, the release agent is uniformly applied to the inner wall surface of the mold at high speed. You can perform dressing work, improve work efficiency and greatly reduce the overall cycle time.

Further, according to the die casting machine of the third aspect, a fixed plate having a semi-movable mold provided so as to be able to come in contact with and separate from the main body side, and a movable plate of the fixed plate which opposes the semi-movable mold. A movable plate having a mold and moving back and forth in the direction of the fixed plate, and the semi-movable mold is driven by a required driving force when the movable plate performs a mold opening operation after press-fitting the molten metal into the mold cavity. In addition to moving the movable plate in the mold opening direction in synchronism with the mold opening operation, after the shirring of the sprue runner part generated for the molten metal, a driving part for returning this semi-movable mold to the main body side is provided. Therefore, when the movable plate performs the mold opening operation after the molten metal is pressed into the mold cavity, the semi-movable mold is moved in the mold opening direction in synchronization with the mold opening operation of the movable plate.
After shirring the sprue runner part, the semi-movable mold can be returned to the main body side.As a result, product defects due to a slight deviation of the operation caused by the shirring of the sprue runner part during opening and closing of the mold It is possible to perform die-casting continuously and at high speed smoothly and with high accuracy without causing damage to the molded product due to the division of the gate part or the state of operation stoppage, which is effective for mass production. Can be secured.

[Brief description of drawings]

FIG. 1 is a side view illustrating a main part of a die casting machine according to an embodiment of the present invention, which illustrates a state where a die is clamped.

FIG. 2 is a view taken along the line AA of FIG. 5 as seen from the main body side of the intermediate moving unit of the die casting machine according to the embodiment.

FIG. 3 is a view taken along the line BB of FIG.

FIG. 4 is an explanatory side view showing a state where the movable plate and the intermediate moving unit are stopped intermediately.

FIG. 5 is a side view showing the movable platen in a fully opened state.

FIG. 6 is an explanatory view of a surface of the intermediate moving unit, which is in contact with the main body unit, viewed in the movable plate side direction.

FIG. 7 is a schematic cross-sectional explanatory view of a main part of a sliding core type structure.

FIG. 8 is a schematic perspective view of a main part of a sliding core type structure.

FIG. 9 is a schematic front view of a sliding core type configuration.

FIG. 10 is a schematic explanatory view of a main part of a conventional die casting method.

FIG. 11 is a schematic explanatory view of a main part of a conventional die casting method.

[Explanation of symbols]

 10 Mold Cavity 12 Fixed Plate 14 Movable Plate 16 Semi-Movable Mold 18 Movable Mold 20 Body Part 22 Intermediate Moving Part 30 Drive Rod 32 Hydraulic Drive Part 34 Shearing Mechanism 42 Gate 44 Gate Gate Sleeve 50 Gate Runner Part 52 Water Supply Port 54 Powder Body supply port 58 Charging device 60 Powder release agent supply device 76 Pressure reducing device M Molten metal

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B22D 31/00 B22D 31/00 A (56) Reference JP-A-64-15257 (JP, A) JP 62-127150 (JP, A) JP 53-19926 (JP, A) JP-B 2-50824 (JP, B2) JP-B 1-20946 (JP, B2) JP-B 51-37052 (JP, B2)

Claims (3)

(57) [Claims] 1. A fixed plate having a semi-movable mold provided so as to be able to come into contact with and separate from a main body side, and a movable mold facing the semi-movable mold of the fixed plate. A movable platen that moves, and the mold is synchronized with the mold opening operation of the movable plate by the required driving force when the movable plate performs the mold opening operation after the molten metal is press-fitted into the mold cavity. Move it in the opening direction, stop the movable platen and the semi-movable mold at an intermediate position before reaching the mold fully opened position of the movable plate, shirr the sprue runner part that is continuous with the product in that state, and then move the semi-movable mold. A continuous casting method for a die casting wheel, comprising a step of returning to a main body side. 2. Before the molten metal is pressed into the mold cavity, a charged powder mold releasing agent is supplied into the mold cavity and the inside of the mold cavity is depressurized to separate the powder onto the inner wall of the mold. mold agent electrodeposited, then claims, characterized in that through the molten metal of the stuffing step
1. The continuous casting method for a die casting wheel according to 1 . 3. A fixed plate having a semi-movable mold provided so as to be able to come into contact with and separate from the main body side, and a movable mold facing the semi-movable mold of the fixed plate, and is moved back and forth in the direction of the fixed plate. Including the moving movable plate, the movable plate is opened after the molten metal is pressed into the mold cavity.
When performing the work, the semi-movable die is driven by the required driving force
In addition to moving in the mold opening direction in synchronization with the mold opening operation,
After shirring the sprue runner part that occurs with hot water,
It is equipped with a drive unit that returns the semi-movable mold of the
Die casting machine.