JPH07110403B2 - Split gate pressure casting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to pressure casting used in , for example, a die casting (pressure die casting) casting method or a molten metal forging method for casting an aluminum alloy casting.
More specifically, the present invention relates to a sprue split type pressure casting device in which a sprue part of a die is opened and closed by a slidable spout block having a runner part.

[0002]

2. Description of the Related Art For example, in a die casting method using a horizontal cold chamber type die casting machine, as shown in FIG. 5, a fixed die 2 provided on a fixed platen 1 and a movable die 4 provided on a movable platen 3. After clamping and
The molten metal M supplied to the sleeve 6 by the ladle 5 is
Basically, the forward movement of the pressure plunger 7 is performed while filling the product space R. In addition, 8 is a stationary platen, 9 is a mold clamping cylinder, 10
Is an extrusion pin.

On the other hand, when following the die casting method as described above and attempting to supply hot water to the die by the gravity action of the molten metal itself, the casting machine is arranged with the vertical die as shown in FIG. The hot water supply system will be located at the top of the machine.

That is, in the example of FIG. 6, a lower mold ( movable type )
An upper die ( fixed die ) 12 forming a die together with 11 is provided with a sprue block block 14 which is orthogonal to the sprue part 13 and is slidable in the horizontal direction. A runner part 15 is formed which can communicate with. In addition, the gate closing block 14 is a cylinder 1
It slides by the operation of 6.

At the time of hot water supply, the sprue block block 14 is positioned at the sprue release position P1 as shown in FIG.
The molten metal is supplied to the product part space R through the sprue part 13 and the runner part 15.

After hot water is supplied, the gate closing block 14 is slid to the gate closing position P2 as shown in FIG. 7, and the gate part 13 is closed by the gate closing block 14,
The pressurizing plunger 18 facing the product space R is moved upward by the pressurizing cylinder 19 to pressurize the molten metal in the product space R.

[0007]

[Problems to be Solved by the Invention] Casting shown in FIGS.
In the apparatus , in order to maintain the quality of the product, cleaning of the runner part 15 for the purpose of removing slag from oxides, etc.
It is necessary to apply the mold release agent to the runners and to load the runner part 15 with a filter for each shot. However, due to the structure of the sprue block block 14, these operations are performed as shown in FIG. It cannot be performed unless the gate closing block 14 is in the gate opening position P1.

Since the gate closing block 14 is returned to the gate opening position P1 in the casting cycle after the product is taken out, each work such as the cleaning of the runner section 15 is substantially for supplying hot water. Must be done in advance. As a result, the time required for the cleaning or the like directly affects the cycle time of the casting cycle, and the cycle time becomes long, which is not preferable.

The present invention has been made by paying attention to the above-mentioned conventional problems, and makes it possible to shorten the cycle time by preventing the time required for cleaning the runner from affecting the cycle time. it is intended to provide a structure of the pressure casting apparatus.

[0010]

According to a first aspect of the present invention, there is provided an upper die having a sprue part in a die including an upper die and a lower die.
The mold, provided with a scan <br/> slide capable sprue occlusion blocks in the horizontal direction along the guide groove perpendicular to the sprue, which can be communicated with the sprue in this <br/> sprue obstruction block runner Part is formed, and while the gate closing block is slid to the gate opening position where the gate part and the runner part communicate with each other, the molten metal is supplied into the mold through the gate part and the runner part, while after the hot water is supplied. Is cast while pressurizing the molten metal in the mold while sliding the gate closing block to the gate closing position where the gate and the runner are not in communication and the gate is blocked by the gate closing block. In the spout-division-type pressure casting apparatus , the spout block block of the upper die
Below the gate, the gate block block at the gate block position
Air blowpo that blows compressed air toward the runner of Ku
The upper part of the upper mold has a spout blocking block.
Above the door, the spout blocker located at the spout block position
The runner of the lock is communicated with the runner of the lock, and the runner is placed outside the upper mold.
The feature is that the work hole that faces the space is formed .

The invention according to claim 2 is such that the upper die and the lower die.
In the upper die having the sprue part of the die including the die, the sprue
Can be horizontally slid along the guide groove orthogonal to the section
A gate block is installed and this gate block
The spout has a runner part that can communicate with the sprue part.
Block to the sprue release position where the sprue part and the runway part communicate
Slide the hook through the sprue part and runner part.
While supplying the molten metal into the mold,
The spout and runner are not in communication and the sprue block
Block to the spout closing position where the sprue closes
Press the molten metal in the mold while sliding the block.
While using the sprue split type pressure casting equipment
In addition, as the gate closing position, there is a first gate closing position.
Set the second gate closing position separately,
The first sprue block position below the sprue block
The compressed air toward the runners of the sprue block
While providing an air blow port for blowing,
The first gate is located above the gate block
When communicating with the runner part of the sprue block at the closed position,
Work hole is formed to expose the runner to the external space above the upper mold
And the gate closing block at the second gate closing position
Load the filter from above on the runway of the hook
It is characterized in that a filter loading means is provided .

[0012]

[Action] According to inventions of claim 1, in a state sprue obstruction block is in the sprue closed position, the runner portion operation hole
Through the outer space above the upper mold through
Compressed air is blown from the air blow port to the road
Since that will be, the coating operation of the release agent to the cleaning and the runner portion of the hot water path unit, further to perform the loading operations of the filter to the water path unit, and concurrently in a pressurized solidification process of the melt
Can be, it is not necessary to affect the time required for the cleaning or the like of the hot water path unit depending on this is the cycle time of the casting cycle. Similarly, according to the invention described in claim 2, the sprue is closed.
With the block in the first sprue closed position,
When the part faces the external space above the upper mold through the work hole,
The compressed air from the air blow port to the runner.
Will be sprayed while the spout block block
With the second sprue closed position, the flap is attached to the runner.
The filter is loaded by the filter loading means
Therefore, as in the case of the invention according to claim 1, at least the runner
Part cleaning work and release agent application work on the runner part.
This can be done in parallel with the hot water pressure solidification process.
Therefore, the time required for cleaning the runner part is the size of the casting cycle.
It will not affect the crew time and will be filtered
Is automatically loaded by the filter loading means.
Therefore, the man-hours for loading the filter can be reduced.

[0013]

1 and 2 show an embodiment of a pressure casting apparatus according to the present invention , in which parts common to those of the structures shown in FIGS. There is.

That is, as shown in FIGS. 1 and 2, the upper mold ( fixed mold ) 21 fixed to the fixed platen 20 has a guide
A work hole 22 is formed so as to be adjacent to the sprue part 13 in the sliding direction of the sprue block block 14 slidably inserted and supported in the groove 31, and the distance between the center axes of the sprue part 13 and the work hole 22 is The gate block 14
It is set to be equal to the slide stroke of. Therefore, as shown in FIG.
In the state where 4 is in the gate closing position P2, the runner portion 15 opens into the working hole 22 and communicates with this, while in the state where the gate closing block 14 is in the gate opening position P1 as shown in FIG. Similarly, the runner part 15 communicates with the sprue part 13.

The fixed platen 20 has a sprue 13
Spaces 23 and 24 corresponding to the work holes 22 are individually formed, and an upward air blow port 25 that points in the direction of the work holes 22 is formed in the lower portion of the upper mold 21.
Is formed so that the air supplied from the air pressure source 26 through the conduit 27 is blown out from the air blow port 25.

Therefore, in the present embodiment, as shown in FIG. 2, if the molten metal M is supplied through the sprue portion 13 and the sprue portion 15 while the sprue block block 14 is in the spout opening position P1, as shown in FIG. As shown in FIG. 1, the gate closing block 14 is immediately slid to the gate closing position P2, and the gate part 13 is closed by the gate closing block 14. Then, as shown in FIG. 6, the pressure plunger 18 accelerates solidification while pressurizing the molten metal M in the product portion space R.

[0017] On the other hand, when sliding the sprue closure block 14 as described above to sprue closed position P2, the shape of the runner 15 is coincident with the operation hole 22 and the space 24
Then, it faces the external space above the fixed platen 20 . In this state, air is blown out from the air blow port 25, and the air blow action removes metal oxides and the like adhering to the runner part 15 for cleaning, and after cleaning the runner part 15, The release agent is applied to the passage 15 and the filter 28 is loaded. The filter 28 is used to remove foreign matters and the like contained in the molten metal M during hot water supply.

As described above, in the process of pressurizing and solidifying the molten metal M, by cleaning the runner portion 15 in parallel with this, the cycle time of the casting cycle can be significantly shortened and the mold temperature can be shortened. It is possible to prevent deterioration of the water temperature and deterioration of the bathing area.

FIGS. 3 and 4 are views showing another embodiment of the present invention. In this embodiment, the gate closing position of the gate closing block 14 is a first gate closing position P21 and a second gate closing position P22. The gate closing block 14 is slid in two steps from the gate opening position P1 while cleaning the runner portion 15 and applying the release agent, and the filter 28.
It is designed so that loading and loading are performed separately.

[0020] That is, in the position adjacent to the operation hole 22, and a storage area 29 for storage of the plurality of filters 28 are provided, the storage et
Filter by rear 29 and pusher 30 described later
-A loading means is configured. Then, as shown in FIG. 3, when the gate closing block 14 slides to the first gate closing position P21 where the runner portion 15 and the working hole 22 communicate with each other, the molten metal M in the product space R is pressurized. The coagulation proceeds. Meanwhile, the runner portion 15 by air blow from the air blow port 25 in the pressure solidification process of soluble Yu M
And the mold release agent application work.

Thereafter, the mold is opened, the product is taken out, and at the stage of applying the release agent to the product shape portion of the mold, the gate closing block 14 is moved to the second gate closing position P22 as shown in FIG.
Slide up to. At this time, since the runner part 15 of the spout block 14 and the opening part of the storage area 29 coincide with each other and communicate with each other, the pusher should be put in front of the filter 28 stored in advance under this state. Push out by 30. As a result, the filter 28 in the front row of the storage area 29 falls by its own weight and is loaded in the runner part 15 of the spout block block 14.

Therefore, in the case of this embodiment , the melt M
In the process of pressure solidification of
While cleaning and applying the release agent are performed,
When applying the release agent to the product shape part of the mold,
To since it is intended to filter 28 automatically loaded, to complete the series of operations such as cleaning without affecting the cycle time of the first embodiment as well as the casting cycle, or
Therefore, the number of man-hours for loading the filter 28 can be reduced.

[0023]

As described above , according to the invention described in claim 1 , the sprue block of the spout block at the spout closing position is provided.
In contrast, compressed air is blown from the air blow port
On the other hand, the runner part is not
In the process of pressurizing and solidifying the molten metal, cleaning of the runner part of the sprue block block, application of release agent, and loading of the filter to the runner part are performed in parallel with this process. As a result, the time required for cleaning the runner does not affect the cycle time of the casting cycle, and the cycle time of the casting cycle can be significantly shortened, and the mold temperature decreases and the hot runnability deteriorates. This is effective in preventing the occurrence of factors such as casting defects.

According to the invention of claim 2, hot water is used.
The gate closing position of the mouth closing block is the first gate closing position
The second hot water is divided into the second gate closing position
Set the flap against the runner of the spout block at the spout block position.
Filter loading means for loading the filter is provided
Therefore, similarly to the invention described in claim 1, the molten metal is pressurized and coagulated.
In parallel with this in the solidification process, the runner of the spout block block
Also capable of cleaning parts and applying release agent
Needless to say, the advantage of reducing the man-hours for loading the filter
There is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold when a gate is closed according to an embodiment of the present invention.

FIG. 2 is a view showing an embodiment of the present invention and is a cross-sectional view of the mold when the gate is opened.

FIG. 3 is a view showing another embodiment of the present invention and is a cross-sectional view of the mold when the sprue is closed.

FIG. 4 is a view showing another embodiment of the present invention and is a cross-sectional view of a mold when a filter is replaced.

FIG. 5 is an explanatory sectional view showing the configuration of a conventional horizontal cold chamber type die-cass machine.

FIG. 6 is an explanatory cross-sectional view showing the configuration of a conventional vertical die pressure casting apparatus.

FIG. 7 is an operation explanatory view of the pressure casting device shown in FIG.

[Explanation of symbols]

11 ... Lower mold 13 ... Gate part 14 ... Gate closing block 15 ... Gate part 18 ... Pressurizing plunger 20 ... Fixed platen 21 ... Upper mold 22 ... Working hole 25 ... Air blow hole 28 ... Filter 29 ... Storage area (filter loading means) ) 30 ... Pusher (filter loading means) 31 ... Guide groove M ... Molten metal P1 ... Gate opening position P2 ... Gate closing position P21 ... First gate closing position P22 ... Second gate closing position

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B22D 41/34 520 7511-4E

Claims (2)

[Claims] 1. A sprue part of a die including an upper die and a lower die.
The upper die having, together along the guide grooves perpendicular to the sprue providing water <br/> horizontal direction in slidable sprue occlusion blocks, this sprue closed block sprue and communicable runner section Is formed, and while the gate closing block is slid to the gate opening position where the gate and the runner communicate with each other, the molten metal is supplied into the mold through the gate and the runner, while after the hot water is supplied. The casting is performed while pressurizing the molten metal in the mold while sliding the gate closing block to the gate closing position where the gate and the runner are not in communication and the gate is closed by the gate closing block. In the spout-division-type pressure casting device that is configured to perform the operation ,
Pressure is applied toward the runner of the spout block at the spout block position.
With an air blow port that blows compressed air
In the upper mold, at a position above the gate block,
Communicates with the runner of the spout block at the spout block position
A working hole that exposes the runner to the external space above the upper mold.
A sprue-dividing pressure casting device characterized by being formed . 2. A sprue part of a die including an upper die and a lower die.
On the upper die having water along the guide groove orthogonal to the sprue part.
By providing a spout block that can slide in the horizontal direction,
Anyway, this hot water block block has hot water that can communicate with the hot spring part.
A sprue solution that forms a passage and connects the sprue and the sprue
In front with sliding the gate block to the release position
One for supplying molten metal into the mold through the gate and runner
However, after hot water is supplied, the sprue part and the runner part are not in communication.
The gate is closed by the gate block
Sliding the gate block to the closing position
Hot water that is cast while pressurizing the molten metal in the mold
In the spout-divided pressure casting device, a first spout closing position and a second spout are set as the spout closing position.
The mouth closing position is set separately, and the upper mold is placed at a position lower than the gate closing block.
Toward the runner part of the sprue block block at the sprue block position 1.
The air blow port for blowing compressed air
On the other hand, in the position above the gate block in the upper mold,
With the runner of the sprue block at the first sprue block position
A work that communicates to expose the runner part to the external space above the upper mold
Hot water at the second sprue closed position while forming a work hole
Filter the runner of the mouth block from above.
Water port you <br/> characterized in that a filter loading means for loading over split pressure casting apparatus.