KR101314364B1 - Spray head for die casting - Google Patents

Abstract

The present invention relates to a spray head for die casting which sprays a release agent onto a cavity of a mold main body and comprises: a main block that is movably connected to the mold main body and which moves near to the cavity and discharges the air and release agent separately; multiple mixing valves that are integrally combined with the main block and which have mixture outlets for discharging the mixture of the air and release agent; multiple spray tubes to which the mixture is supplied from the mixture outlets of the mixing valves and which spray the mixture onto the cavity by being extended toward the cavity; a plate-shaped adapter that is integrally fixed on the multiple mixing valve and communicated with each mixture outlet in a sealed state and which has multiple mixture flow paths provided for supplying the mixture to each spray tube; and a spray tube cassette that is detachably combined with the adapter and which has multiple communication holes provided for communicating with each of the multiple mixture flow paths in a sealed state and combined with the spray tubes respectively. The spray tubes are capable of being combined with the mixing valves in a lump, since the spray tube cassette is detachably connected to the mixing valve while the spray tubes are combined with the communication holes of the spray tube cassette respectively; and of being compatible with the mixing valve by using an adapter, since the spray tube cassette is communicated through the adapter with the mixing valve.

Description

Spray Head for Die Casting {SPRAY HEAD FOR DIE CASTING}

The present invention relates to a spray head for die casting, and more particularly, to a spray head for die casting, which allows the molded product to be separated from the cavity smoothly by injecting a release agent into the cavity formed in the die body for die casting.

In general, die casting (DIE CASTING) is a type of casting method in which a molten metal is injected into a cavity of a product form formed in a mold and molded to obtain a compact and highly precise molded product.

Such die casting results in damage to the mold body, which is expensive equipment, and damage to the mold body when the cavity of the mold body and the molding are not smoothly separated.

In order to prevent such a problem, by applying a release agent to the cavity formed in the mold body to form a release film on the surface of the cavity to ensure that the molding is separated from the cavity after completion of the casting process.

The release agent is injected into the cavities 4 and 5 of the molds 2 and 3 by the release agent spraying device as shown in FIG.

In the prior art spray apparatus, as shown in FIG. 1, a plurality of injection pipes 1a are provided in the main body 1 to which the release agent is supplied from the outside, and the release agent is discharged through the injection pipes 1a of the cavity 4, 5. Spray on the surface.

Here, the injection pipe (1a) is made of a copper tube that is easy to bend, as shown in Figure 1 are respectively coupled to the nozzle (1b) provided in the main body 1, bent to match the shape of the cavity (3) (4) And spray the release agent to the desired position.

However, according to the prior art, when the injection pipe 1a is replaced with a different diameter according to the shape or size of the cavity 3 or 4 or when a specific injection pipe is damaged and repaired, the operation is stopped and the spray device is disconnected. After separating a plurality of injection pipes (1a) from the nozzle (1b), respectively, another injection pipe must be combined with the nozzle (1b) one by one, and again through a complicated assembly process, very cumbersome, work time is delayed, of course, repair There is a costly problem.

In addition, the prior art, as shown in Figure 1, the injection pipe (1a) is coupled to only one surface of the spray device 1 is divided into both sides toward the cavity (4) (5) as the injection pipe (1a) of the center portion Since the length of the formed relatively long, the injection pressure of the release agent is lost, there is a problem that the uniform injection is not made.

The present invention has been made to solve the above-mentioned problems of the prior art, by combining a plurality of injection pipes, the injection pipe cassette is pre-coupled to the mixing valve of the main block, so that the injection pipes are collectively detachable to the mixing valve The purpose is to provide a spray head for die casting that can be combined.

In particular, it is an object of the present invention to provide a spray head for die casting in which additional injection pipes having different diameters according to the shape or size of the cavity can be replaced with pre-installed injection pipes.

In addition, when the injection tube cassette is formed of aluminum, light weight or lack of strength, and another object of the present invention is to provide a spray head for die casting provided with a pressurization mechanism that can be tightly fixed while protecting the injection tube cassette.

The present invention for achieving the object as described above, in the die-casting spray head for injecting a release agent to the cavity of the die-casting die body, is movably connected to the mold body to move adjacent to the cavity, A main block provided with a flow path and a release agent flow path, respectively, for supplying air and a release agent, and a plurality of air discharge ports and a release agent discharge port for discharging the supplied air and the release agent in a branched state, respectively; The release agent and the air while being integrally coupled to the main block and having an air inlet port and a release agent inlet port respectively communicating with the plurality of air outlet ports and the release agent outlet port, and communicating the air and the release agent introduced into the air inlet port and the release agent inlet port. A plurality of mixing valves having a mixing outlet for discharging the mixed mixer; A plurality of injection pipes supplied from the mixing discharge port of the mixing valve and extending toward the cavity to inject the mixer into the cavity; A plate-shaped adapter integrally fixed to the plurality of mixing valves, the plate-shaped adapter having a plurality of mixer flow paths for supplying the mixer to the injection pipes, respectively, while communicating with the mixing outlets in a sealable manner; And an injection pipe cassette detachably coupled to the adapter and provided with a plurality of communication holes communicating with the plurality of mixer flow paths so as to be sealably connected to the plurality of mixer flow paths, respectively.

In addition, the present invention is configured in the same manner as the injection pipe cassette is detachably coupled to the adapter, additional injection pipes having a different diameter than the injection pipe coupled to the injection pipe cassette is combined, the size of the cavity It may be configured to further include; an additional cassette to be replaced with the injection tube cassette according to the form.

The present invention may further include a pressing mechanism for pressing the edge of the jet pipe cassette coupled to the adapter to closely contact the jet pipe cassette to the adapter.

The pressing mechanism may include, for example, an angle type pressing block coupled to the adapter and provided with a locking jaw that is caught by an edge of the injection pipe cassette to press the injection pipe cassette through the locking jaw; It may be configured to include; and a pressure bolt for pressing the pressure block while being fastened to the adapter through the pressure block.

In addition, it is preferable that the mixer flow path of the adapter is formed so that the diameter of one end connected to the mixing outlet of the mixing valve is larger than the diameter of the other end connected to the communication hole of the injection tube cassette.

In addition, the injection pipe cassette, it is preferable that the diameter of the communication pipe and the diameter of the injection pipe connected to the communication hole is formed to be the same.

In the spray head for die casting according to the present invention as described above, the injection pipe cassette is detachably connected to the mixing valve while the injection pipes are respectively coupled to the communication hole of the injection pipe cassette, so that the injection pipes are mixed together. And the injection tube cassette is connected to the mixing valve via the adapter, so that the mixing valve and the injection tube cassette can be compatible with each other by the adapter.

In particular, since an additional cassette in which additional injection pipes having different diameters from the injection pipes are combined is provided and replaced with the injection pipe cassettes, the injection pipes can be quickly and collectively replaced according to the size or shape of the cavity.

In addition, the injection tube cassette and the adapter can be hermetically coupled as the edge of the injection tube cassette is pressed by the pressing mechanism to be in close contact with the adapter.

Specifically, since the pressure block constituting the pressure mechanism is pressed by the fastening of the pressure bolt fastened to the adapter, the injection tube cassette can be quickly brought into close contact with the adapter through the locking jaw of the pressure block.

And, since the diameter of the mixer flow path provided in the adapter becomes narrower from the mixing valve to the injection tube cassette, the mixer mixed with the release agent can move smoothly to the communication hole of the injection tube cassette.

Moreover, since the diameter of the communication hole provided in the injection tube cassette is formed to be the same as the diameter of the injection tube, the mixer supplied to the communication hole can stably move.

1 is a schematic view showing a spray apparatus according to the prior art.
Figure 2 is a perspective view showing a spray head for die casting according to the present invention.
3 is a longitudinal sectional view showing the disassembled state of the spray head shown in FIG.
4 is a cross-sectional view showing a spray head shown in FIG.
Fig. 5 is a longitudinal sectional view showing an additional cassette of the present invention.
6 is a perspective view showing a pressing mechanism of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

The spray head for die casting according to the present invention includes a main block 10, a mixing valve 20, an injection tube 30, an adapter 40, and an injection tube cassette 50 as shown in FIG. 2.

The main block 10 is a member to which a release agent and air are supplied, and as shown in FIG. 2, the main block 10 is movably connected to the mold body 1 and moves adjacent to the cavity 2, as shown in FIG. 3. As the air flow path 11 and the release agent flow path 12 are provided, and the plurality of air discharge ports 13 and the release agent discharge port 14 are formed, a plurality of air and release agents supplied to the respective flow paths 11 and 12 are formed. Branched into the air discharge port 13 and the release agent discharge port 14, respectively.

As shown in FIG. 2, the main block 10 is integrally coupled to the spray arm 5 to move up or down and move horizontally, and move adjacent to the cavity 2 while interlocking with the mold body 1. do.

Mixing valve 20 is a component for supplying a mixer by mixing the air discharged from the main block 10 and the release agent, as shown in Figure 2 is composed of a plurality is fixed to the main block 10, respectively. The mixing valve 20 may be integrally fixed as the fixing bolt 20 is fastened to the main block 10 while passing through the fixing bolt.

As shown in FIG. 3, the mixing valve 20 is provided with an air inlet 21 and a release agent inlet 22 communicating with the air outlet 13 and the release agent outlet 14, respectively, to supply air and a release agent, respectively. The mixing outlet 23 is provided to communicate the inlet 21 and the release agent inlet 22 with each other to discharge the mixer in which the air and the release agent are mixed through the mixing outlet 23.

The mixing outlet 23 may be connected while being individually screwed in the injection pipe 30 to be described later as it is projected in the form of a screw tube as shown in FIG.

As shown in FIG. 2, the injection pipe 30 is a member for injecting a mixer in which air and a release agent are mixed into the cavity 2 of the mold body 1. The injection pipe 30 is made of a copper pipe, for example, one side is connected to the mixing valve 20 through the adapter 40 and the injection pipe cassette 50 which will be described later, as shown in Figs. 2, the other side is bent in accordance with the shape of the cavity 2 while the other side is extended toward the cavity 2 as shown in FIG. 2 to spray the mixer on the surface of the cavity 2.

Adapter 40 is a component for relaying the mixer discharged from the mixing valve 20 to the injection pipe 30, as shown in Figures 3 and 4, formed in a plate shape, for example mixing by a fixed bolt not shown It is integrally fixed to the valves 20.

The adapter 40 is provided with a plurality of mixer flow passages 41 for sealingly accommodating the plurality of mixing outlets 23 as shown in FIG. 4 to move the mixer to the injection tube cassette 50 described later.

That is, the adapter 40 has a mixing outlet 23 formed in a form in which one end portion 41a corresponds to the mixing outlet 23 of the mixing valve 20 as shown in FIG. 3, and the other end portion 41b is formed. As it is formed in a shape that corresponds to the communication hole 51 of the injection tube cassette 50, the mixing valve 20 and the injection tube cassette 50 are compatible with each other.

Here, the mixer passage 41 has a larger diameter than that of the other end 41b of the one end portion 41a connected to the mixing outlet 23 of the mixing valve 20, as shown in FIG. It can supply to the injection pipe cassette 50 mentioned later. That is, the diameter of the mixer flow path 41 becomes narrower toward the injection pipe 30 from the mixing valve 20 side. Accordingly, the mixer moves quickly because the speed increases while flowing through the mixer passage 41.

As shown in FIG. 4, the injection pipe cassette 50 is a member that is fixed to the adapter 40 and connects the injection pipes 30 to the mixer flow passage 41 collectively. As fastened to the adapter 40 is detachably fixed to the adapter 40.

The injection tube cassette 50 is formed in a plate shape as shown in FIG. 3, and receives a mixer through a plurality of communication holes 51 which communicate in a sealable manner with a plurality of mixer flow passages 41, The injection pipes 30 are respectively coupled to the other side of 51 to form the same as the injection pipes 30.

That is, the injection pipe cassette 50 is connected to the mixer flow path 41 in a batch as the injection pipes 30 are detachably fixed to the adapter 40 in a state where the injection pipes 30 are coupled. .

Here, the communication hole 51 is preferably formed with the same diameter as the inner diameter of the injection pipe 30, thereby stably supplying the mixer to the injection pipe 30.

In addition, O-rings (OR) are provided at the connecting portions of the respective communication holes 51 and the mixer flow passage 41 and the joint hole portions of the mixer flow passage 41 and the mixing valve 20, respectively, to enlarge each joint. In view of the above, a structure for preventing leakage of air or a releasing agent is preferable.

On the other hand, the present invention can be configured to further include an additional cassette 60 as shown in FIG.

The additional cassette 60 is a member to be replaced with the injection tube cassette 50 as shown in FIG. The additional cassette 60 is formed in the same manner as the above-described injection pipe cassette 50, and as the additional injection pipes 35 having a diameter D2 different from the diameter D1 of the injection pipe 30 described above are combined. The additional injection pipes 35 are collectively communicated with the mixer flow passage 41 of the adapter 40.

That is, the additional cassette 60 is replaced with the injection pipe cassette 50 according to the size or shape of the cavity 2 as shown in FIG. 5 while mixing the additional injection pipes 35 through the adapter 40 collectively. It communicates with the valve 20.

On the other hand, the present invention can be configured to further include a pressing mechanism 70 as shown in FIG.

The pressurizing mechanism 70 presses the edges of the injection tube cassette 50 or the additional cassette 60 coupled to the adapter 40 to closely adhere the injection tube cassette 50 or the additional cassette 60 to the adapter 40. As a component, for example, as shown in Figure 3 may comprise a pressing block 71 and the pressing bolt (73).

The pressing block 71 is formed in an angle shape as shown in Figure 3 is provided with a locking jaw (71a) on one side, as shown in Figure 4 to the adapter 40 by the pressing bolt 73 to be described later While being fixed, press the rim of the injection pipe cassette 50 or the additional cassette 60 through the locking step 71a.

The pressure bolt 73 is pressed through the pressure block 71 as shown in Figure 4 to the edge of the adapter 40 while pressing the pressure block 71.

That is, the pressure block 71 is pressed to the adapter 40 by pressing the edge of the injection pipe cassette 50 through the locking step (71a) as the pressure bolt 73 is fastened to the adapter 40.

On the other hand, the pressing block 71 may be provided with an adjusting bolt 71b integrally on the locking step (71a) as shown in FIG. The adjusting bolt 71b presses the adapter 40 while the protrusion length is adjusted according to the thickness of the injection pipe cassette 50 or the additional cassette 60.

In addition, the adapter 40 may be provided with a wear preventing member 75 for preventing the wear of the portion pressed by the locking step (71a) or the adjustment bolt (71b) as shown in FIG. The wear preventing member 75 is composed of a damping bolt that is replaceably fastened to the adapter 40 as shown in FIG. 4 and is pressed by the locking jaw 71a or the adjustment bolt 71b to wear the adapter 40. To prevent.

The operation and operation of the present invention including the above-described components will be described.

The spray head of the present invention is moved to the adjacent to the cavity 2 by the spray arm 5 coupled to the main block 10 before the mold body 1 is operated as shown in FIG. The release agent is sprayed on the surface of the cavity 2 through the 30.

In this case, the air and the release agent are supplied from the outside and are supplied through the air passage 11 and the release agent passage 12 of the main block 10, and are branched into a plurality of portions through the air outlet 13 and the release agent outlet 14.

 In addition, the air and the releasing agent is discharged by mixing the mixing valve 20 to the mixer by the mixing discharge port 23, the mixer is a communication hole 51 of the mixer flow path 41 and the injection pipe cassette 50 of the adapter 40 ) Is supplied to the injection pipes 30 while sequentially flowing to the surface of the cavity 2.

On the other hand, when it is necessary to change the injection pipe diameter of the injection pipe 30 according to the size or shape of the cavity 2, the injection pipe 30 is collectively as the injection pipe cassette 50 is separated from the adapter 40 Separately, the additional injection pipes 35 of different diameters are respectively communicatively coupled to the mixer flow passage 41 as the additional cassette 60 is coupled to the adapter 40 to spray the mixer.

As such, the present invention, since the injection pipe cassette 50 is detachably connected to the mixing valve 20 in a state in which the injection pipe 30 is respectively coupled to the communication hole 51 of the injection pipe cassette 50, the injection pipe (30) can be combined with the mixing valve 20 in a batch, the injection pipe cassette 50 is in communication with the mixing valve 20 via the adapter 40, the mixing valve 20 and the injection pipe The cassettes 50 may be compatible with each other by the adapter 40.

In particular, since the additional cassette 60 having the different injection pipes 35 having different diameters from the injection pipes 30 is provided and replaced with the injection pipe cassette 50, the injection pipes 30 are formed in the size of the cavity 2. Depending on the form, they can be replaced quickly in a batch.

In addition, as the edge of the injection tube cassette 50 is pressed by the pressing mechanism 70 to be in close contact with the adapter 40, the injection tube cassette 50 and the adapter 40 may be hermetically coupled.

Specifically, since the pressure block 71 constituting the pressure mechanism 70 is pressed by the fastening of the pressure bolt 73 fastened to the adapter 40, the injection pipe through the locking step 71a of the pressure block 71 The cassette 50 can be brought into close contact with the adapter 40.

In addition, since the diameter of the mixer flow path 41 provided in the adapter 40 becomes narrower from the mixing valve 20 to the injection pipe cassette 50, the mixer in which the release agent is mixed is smoothly connected to the communication pipe (50) of the injection pipe cassette 50. 51).

Further, since the diameter of the communication hole 51 provided in the injection tube cassette 50 is formed to be the same as the diameter of the injection tube 30, the mixer supplied to the communication hole 51 can move stably.

In addition, the O-ring (OR) is provided at the connection portion of the mixing valve 20 and the adapter 40 and the connection portion of the injection tube cassette 50 and the adapter 40 to maintain the airtightness to prevent leakage of air or release agent. have.

While specific embodiments of the present invention have been described above by way of example, these are for illustrative purposes only and are not intended to limit the protection scope of the present invention. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

10: main block 11: air euro
12: release agent flow path 13: air outlet
14 release agent outlet 20 mixing valve
21: air inlet 22: release agent inlet
23: mixing outlet 30: injection pipe
35: additional injection pipe 40: adapter
41: mixer flow path 50: injection tube cassette
51: communication hole 60: additional cassette
70: pressure mechanism 71: pressure block
71a: Hanging jaw 71b: Adjustment bolt
73: pressure bolt 75: wear protection member

Claims (6)

In the die-casting spray head which injects a mold release agent into the cavity of the die-casting die main body,
A plurality of air outlets which are movably connected to the mold main body and move adjacent to the cavity, are provided with an air flow path and a release agent flow path to supply air and a release agent, respectively, and discharge the supplied air and the release agent in a branched state, respectively; And a main block provided with a release agent outlet.
The release agent and the air while being integrally coupled to the main block and having an air inlet and a release agent inlet respectively communicating with the plurality of air outlets and the release agent outlet, and communicating the air and the release agent introduced into the air inlet and the release agent inlet. A plurality of mixing valves having a mixing outlet for discharging the mixed mixer;
A plurality of injection pipes supplied from the mixing discharge port of the mixing valve and extending toward the cavity to inject the mixer into the cavity;
A plate-shaped adapter integrally fixed to the plurality of mixing valves, the plate-shaped adapter having a plurality of mixer flow paths for supplying the mixer to the injection pipes, respectively, while communicating with the mixing outlets in a sealable manner; And
And a spray pipe cassette detachably coupled to the adapter and provided with a plurality of communication holes communicating with the plurality of mixer flow paths, respectively, to allow the seal pipes to be coupled to the communication holes, respectively. The method of claim 1,
The injection pipe cassette is configured to be detachably coupled to the adapter, and additional injection pipes having a different diameter from the injection pipes coupled to the injection pipe cassette are coupled to each other. Spray casing for die casting further comprising; an additional cassette to be replaced with a customary cassette. The method of claim 1,
And a pressurizing mechanism for pressing the edge of the jet pipe cassette coupled to the adapter to closely contact the jet pipe cassette to the adapter. The method of claim 3, wherein the pressing mechanism,
An angle pressurizing block coupled to the adapter, the locking jaw being provided on the edge of the injection pipe cassette to press the injection pipe cassette through the locking jaw; And
Spray head for die casting comprising a; a pressure bolt for pressing the pressure block while being coupled to the adapter through the pressure block. According to claim 1, wherein the mixer flow path of the adapter,
Spray pipe for die casting, characterized in that the diameter of one end connected to the mixing outlet of the mixing valve is larger than the diameter of the other end connected to the communication hole of the injection tube cassette. The method of claim 1, wherein the injection pipe cassette,
The diameter of the communication hole and the diameter of the injection pipe connected to the communication hole is the die casting spray head, characterized in that formed in the same.

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