JPH0259162A - Spraying device for die casting machine - Google Patents

Abstract

PURPOSE:To shorten set-up time and to improve the productivity and the quality by changing a mixing head or a gun head to a mixing block with attachment/ detachment. CONSTITUTION:The mixing head 5 is fixed by fastening bolt while holding a dovetail 8 for the mixing head 5 with holding pieces 6 and 7. In the case of using a spray gun, the gun head 10 is used instead of the mixing gun 5. The gun head 10 has constitution as attachable/detachable to the mixing block 1 as the same as the mixing head 5. In the gun head 10, the spray guns 11 are attached at tip parts of branch piping 12 for parting agent and branch piping 13 for air using to parting agent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a mold release agent spraying device for gold in a die-casting machine.

[Prior Art] Conventionally, a spray device in a die-casting machine has been a spray device dedicated to mixing spray or a spray gun dedicated to spray gun spray.

The mixing head of this conventional mixing spray method has a structure as shown in Figure 2 (b).Multiple mixing heads are prepared according to the mold, and used by replacing them with a cassette type. Was.

On the other hand, the spray gun method, which can produce die-cast products with better surface quality than the mixing spray method described above, has a high spray gun cost, so it is not economical to prepare multiple spray guns to match the molds used, like the mixing head described above. Unacceptable X+ Therefore, when using the spray gun method, adjustments were made each time to suit the mold.

[Problem to be Solved by the Invention 1] However, in the conventional spray equipment, in the mixing spray method, a plurality of mixing heads are prepared and can be replaced according to the mold; The major drawback is that a large amount of mold release agent is used.

On the other hand, the spray gun method uses fine spray particles and improves the surface quality of die-cast products without dripping, and consumes less mold release agent, but the cost of the spray gun for the gun head is high. Therefore, it is not economical to prepare multiple guns and heads to match the mold, and therefore, with the spray gun spray method, it is necessary to adjust each time to match the mold, which increases the setup time. There is.

As mentioned above, both the conventional mixing spray method and the spray gun spray method have their own advantages and disadvantages, so both can be used for the production of a wide variety of products with one spray device. There was the inconvenience of not having one.

In view of the above-mentioned points, the present invention has been developed to enable the production of a wide variety of products with one spray device, shorten the setup time (and combine the advantages of a mixing head and the advantages of a gun head). The purpose is to provide a versatile spray device.

[Means for Solving the Problems] In order to achieve this object, the present invention includes a mixing head for mixing spray and a gun head for spray gun spray, which are detachably attached to a mixing block and can be selectively used. The mixing head can be easily selectively used with the gun head by a die-casting product produced by a die-casting machine.

That is, the mixing block is provided with a release agent valve, a check valve for opening and closing the release agent air, and a stopper means for the check valve.

When using the mixing head, the stopper means is opened to operate the check valve, and the female molding agent valve is opened to introduce the mold release agent and supply mold release agent air. The check valve is opened, and immediately after the check valve, the mold release agent and the mold release agent air are mixed and sent to the mold release agent port of the mixing head, and a plurality of mold release agents installed inside the mixing head are mixed. The mold release agent is distributed and jetted from the tip of the mold release agent spouting nozzle, and the main stream of the mold release agent air that flows directly into the mixing head from before the check valve is mixed with the mold release agent. The mold release agent is atomized by merging at the tips of the jet nozzles, and is jetted from a plurality of nozzles arranged coaxially with the plurality of mold release agent jetting nozzles, and after the mold release agent air is blocked, the mold release agent is atomized. Continue to supply mold agent air to blow away and clean the mold release agent remaining in the mixing head.

When using the gun head, the stopper means of the mixing block is pressed to close the check valve, and the mixing head is removed from the mixing block and replaced with the gun head. Replace and install. The gun head is connected to the mixing
It has an air port that communicates with the air port for air delivery of the block, and a plurality of air blow nozzles that are connected and attached to the air port of the gun head are dedicated to air blow, and a plurality of spray guns are connected to the gun head. A plurality of branch pipes for a mold release agent, which are arranged in a variable mounting position and communicate with the mold release agent port of the mixing block, and a pipe connected to an air source separately from the air piping dedicated to the air blow. The present invention is characterized in that a plurality of branch pipes for female mold agent air are connected to the plurality of spray guns.

[Function] According to the present invention, when using a mixing spray, a mixing head is attached to a mixing block and the mixing spray is used.
A stopper means of a check valve installed inside the block is opened to operate the check valve, and at the same time, a release agent valve installed inside the mixing block is opened.

By operating the check valve, a part of the mold release agent air supplied from the air source to the mixing block is mixed with the mold release agent introduced by opening the mold release agent valve immediately after the check valve. The mold release agent is fed into the mold release agent port of the mixing head, and is distributed and jetted from the tips of a plurality of mold release agent jet nozzles in the mixing head.

The main flow of the female mold air supplied to the mixing block is directly fed into the mixing head from before the check valve, and distributed and sent out to the tips of the plurality of mold release agent jet nozzles. The mold release agent jetted from a plurality of mold release agent jet nozzles is merged with the mold release agent to atomize the mold release agent, and the mold release agent is jetted from a plurality of nozzles disposed coaxially with the plurality of mold release agent jet nozzles; After closing the release agent valve,
Continue to supply the release agent air for a while to remove the remaining release agent (.

When using a spray gun, press the stopper means of the mixing block to close the check valve, remove the mixing head from the mixing block, attach the gun head, and remove the mixing head from the mixing block.・Communicates with the block's airport. Air blowing is performed by ejecting high-pressure air from a plurality of air blow nozzles attached in communication with the air ports of the gun head.

When the air blow is finished, a branch pipe for the mold release agent, which is installed in the gun head in a variable mounting position and communicates with the mold release agent port of the mixing block, and an air pipe dedicated to the air blow are installed. Spray guns can be sprayed using multiple spray guns connected to a separate branch pipe for mold release agent air, and two spray devices can perform both mixing spray and spray gun spray. becomes.

[Example] Next, embodiments of the present invention will be described based on the drawings.

In FIG. 1(a), two guide rods 2 and 3, which are slidably guided by flanges 2a and 3a to a frame (not shown), are attached to the mixing block l, and a pneumatic hydraulic cylinder. A movable device (not shown) to which the piston rod 4 is attached is used to move up and down in the vertical direction using the two guide rods 2 and 3 as guides.

The mixing head 5 has a structure in which a dovetail 8 of the mixing head 5 is held down by holding pieces 6 and 7 and fixed by tightening bolts (not shown). Such a detachable structure is not limited to what is shown in the drawings.

A nozzle 46 is attached to the mixing head 5, and the nozzle 46 is made of a small diameter steel tube, and its tip is bent to fit into a mold.

When using a spray gun, the gun head 1O is used in place of the mixing head 5.

Like the mixing head, the gun head lO is also configured to be detachable from the mixing block l.

A branch pipe 12 for mold release agent and a branch pipe 13 for mold release agent air are connected to the gun head IO, and a spray gun is connected to the branch pipe 12 for mold release agent and the branch pipe 13 for mold release agent air. 11 is attached.

The spray gun 11 is supported by a support fitting 14, and the support fitting 14 is attached to a support rod 15 with a fixing bolt 16, and is movable up and down along the support rod 15. It can also be fixed in an appropriate position. A fixture 17, which attaches the support rod 15, is attached to the support rod 18, and can be moved longitudinally along the support rod 18 and fixed at an appropriate position. The support rod 18 is attached to a bracket 19 which is fixed to the gun head IO.

A release agent air hose 20 exclusively for the spray gun is detachably connected to a fixed pipe 22 by a hose joint 21, so that it can be easily replaced.

FIG. 2(a) is a cross-sectional view of a part of the mixing block 1, and in the figure, 23 is a mold release agent port, and the guide rod 2 of FIG. 1 is connected to the mold release agent port 23 by a flange 2a. has been done. This guide rod 2 is hollow and forms a flow path for pumping the mold release agent.

The inflow and stop of the mold release agent is controlled by a piston 26 installed inside the cylinder 27 and attached to the mold release agent valve 24.
The flow path between the release agent valve 24 and the valve seat 25 is opened and closed by the operation.

Reference numeral 28 denotes a check valve, which is slidably inserted into the valve case 30, and the stopper means 32 of the check valve 2 is engaged with the check valve 28 by moving the stopper 32a to the left and then to the right using a screw 33. When the mixing head 5 is used, the rod 32b at the tip is moved to the left so that the rod 32b at the tip is not pressing the check valve 28, so the check valve is in operation. When air is supplied to the brimix chamber 35 and the gun head 10 is used, it moves to the right, and the rod 32b at the tip presses the check valve 28 against the valve seat 29, causing the check valve to close. stop the operation.

Reference numeral 34 denotes a flow path for mold release agent air, which communicates with the mold release agent air port like the mold release agent port 23 through the hole in the hollow ring of the guide rod 3 shown in FIG.

When using a mixing head, as shown in FIG. 2(a), the stopper means 32 causes the stopper 32a to
to the left to put the check valve 28 into operation,
When the M2 agent valve 24 is opened by moving the piston 26 to the left, the t4'A agent flows into the brimix chamber 35, and the release agent air opens the check valve 28 and is ejected from the flow path 36. Then, the 1m type agent and the female type agent air are mixed in the brimix chamber 35. The mixed mold release agent flows from the mold release agent port 37 into the mold release agent port 39 of the mixing head 38 in FIG. It passes through a plurality of needle valves 41 and is ejected from a plurality of nozzles 42.

On the other hand, type iI agent air flows into the female agent air port 43 from the flow path 34 of the mixing block I, and flows into the distribution path 44.
It is mixed with the mold release agent in the nozzle 42 at the throat section 45, atomized, and ejected from a plurality of nozzles 46.

FIG. 4 is a block diagram showing the mixing head 38.
This shows the case where .

In FIG. 4, reference numeral 47 denotes a release agent pressure-feeding tank, and the release agent pressure-feeding tank 47 is pressurized with pressure-adjusted pressurized air 48, and is connected to the release agent port of the mixing block 1 from a pressure-feeding piping 49. The mold release agent is pumped to 23.

Universal agent air is supplied from an air source 50 through a pressure regulating valve 51 at a rate of 4 kg/cm'' or more, and is supplied through a solenoid valve 52 to the air port of the mixing block.

53 is a solenoid valve that supplies air pressure to the cylinder 27 that opens and closes the release agent valve 24. 54
is an air blow solenoid valve that directly supplies high pressure air from the air source 50 to the mixing block I.
After that, high-pressure air is ejected from the nozzle 46 of the mixing head 38, and is used to blow away minute pieces of cast iron adhering to the mold.

The above is an explanation of the case where a mixing head is used.

Next, the case of using a gun head will be explained.

A gun head IO having the structure already explained in FIG. 1(b) is attached to the mixing block (see I in FIG. 1(a)) in place of the mixing head 5.

As shown in the block diagram of FIG. 4, a gun-specific female agent air device 55, a fixed pipe 22, and a hose joint 21 are added for the gun head.

The hose joint 21 is a one-touch type removable joint.

FIG. 5 is a block diagram showing the mixing block 1 and the gun head IO. When the mixing head 38 is used, the check valve 28 is operated, whereas this gun head IO is operated. If you use
As shown in FIG. 3(a), this check valve 28
Since it is pressed so that it does not operate by the stopper means 32, the symbol changes to the mixing block l in FIG. 5.

First, in air blowing, when the solenoid valve 54 shown in Fig. 4 is opened to supply high-pressure air to the mixing block 1, the mold release agent valve 24 and check valve 28 are closed as shown in Fig. 3(a). So mold release agent air flow path 3
The air port 5 of the air blower shown in FIG. 3(b) communicates with 4.
6 and passes through the distribution path 57 to 7j! number of air blows
High pressure air is ejected from the nozzle 58.

Next, when the air blowing is finished, the gun-specific mold release agent air is supplied from the gun-specific mold release agent equipment 55, and the solenoid valve 53 is operated to open the mold release agent valve 24 to release the mold. Supplying molding agent, the gun head 1
The hose 1 is passed from the mold release agent port 61 of 0 through the distribution path 59.
2 is connected to a plurality of spray guns 11.

Further, the gun-specific mold release agent air is connected from a fixed pipe 22 to the gun head 10 through the hose joint 21, and is connected to the plurality of spray guns 11 by a hose 13 through a distribution path 60.

Hose 12. as mentioned above. and 13 form branch piping for mold release agent and female mold agent air.

Perspective views of other embodiments are shown in FIGS. 6(a) and 6(b).

In this embodiment, the same members as those in FIGS. 1(a) and 1(b) are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 6(a), the mixing block 1 is provided with a mold release agent air port 62 exclusively for the gun, and is connected to a fixed pipe 22 with a hose 20. Further, the gun-specific mold release agent air port 62 is bent and communicates with a port 63, and since it is not used when the mixing head 5 is used, the mixing head 5 does not have a port hole.

The gun head 10 is provided with a port 64 that communicates with the port 63 and communicates with the distribution path 60 to supply gun-specific mold release agent air from the hose 13 to the spray gun 11. .

In the case of the first embodiment, as shown in FIG. 1(b), a hose 20 is connected directly to the gun head IO to supply the gun-specific mold release agent air, and the hose joint 21 is attached and detached. In the embodiment, this is not necessary, and furthermore, the installation and removal are simple and convenient.

[Effects of the Invention] As explained above, according to the present invention, the mixing head for mixing spray and the gun head for spray gun spray in one spray device are selected by die-cast products as described above, Since they are mutually interchangeable, setup time can be shortened, productivity and quality can be improved, and a versatile spray device can be provided.

[Brief explanation of the drawing]

Figures 1(a) and 1(b) are perspective views of embodiments of the present invention, Figure 2(a) is a sectional view taken along line A-A in Figure 1(a), and Figure 2(b) is a perspective view of an embodiment of the present invention. A sectional view of the mixing head 5 in FIG. 1(a), and FIG. 3(a) is a cross-sectional view of the mixing head 5 in FIG.
-A sectional view, FIG. 3(b) is a sectional view of the gun head 10 of FIG. 1(b), FIGS. 4 and 5 are block diagrams, and FIG.
FIG. 6(a) and FIG. 6(b) are perspective views of other embodiments. 1...Mixing block, 5...Mixing block
Head, 9...Mold release agent airport, 10...Gun.
Head, 11... Spray gun, 24... Valve for mold release agent, 28... Check valve, 31... Spring. 42... Ejection nozzle, 46... Nozzle.

Claims (1)

[Scope of Claims] A mold release agent comprising piping for supplying a mold release agent, a mold release agent port for supplying the mold release agent, piping for supplying air and an air port for supplying the air, and mounted on a movable device. a mixing block, and a mold release agent port for introducing a mold release agent and an air port for introducing air, which communicate with the mold release agent port and the air port of this mixing block, respectively, when attached to the mixing block. Equipped with the mixing
It has a mixing head for mixing spray and a gun head for spray gun spray that are detachably attached to the block, and simply attach and replace the mixing head or the gun head to the mixing block. A spray device for a die-casting machine, characterized in that mixing spray or spray gun spray can be easily selected and used with one spray device.