KR102562256B1 - Automatic valve control system for mold circulating water line - Google Patents

Abstract

The present invention relates to an automatic valve control device for a mold circulation water line capable of controlling the flow of air to circulate and drain water remaining in a mold.
In the present invention, the air supplied to the mold through the air supply pipe, the cooling water supplied to the mold through the cooling water supply pipe and then circulatingly drained through the cooling water drain pipe, and the mold through the hot water supply pipe In the valve automatic control device of the mold circulation water line that automatically controls the flow of hot water circulated through the hot water drain pipe after being supplied with water, the flow of air is controlled to drain the fluid remaining in the mold. An air valve installed in the air supply pipe to control the flow of the cooling water, a cooling water valve installed in the cooling water supply pipe to control the flow of the hot water, a hot water valve installed in the hot water supply pipe to control the flow of the hot water, and a bypass valve branched from the air supply pipe. A bypass pipe having a bypass pipe, a first bypass connection pipe connecting an end of the bypass pipe and a point after the cooling water valve of the cooling water supply pipe, and connecting an end of the bypass connection pipe and a point after the hot water valve of the hot water supply pipe. a second bypass connection pipe that operates, valve handles respectively provided on the air valve, the cooling water valve, and the hot water valve so as to be aligned on an orthogonal line of each pipe, and the respective valve handles are interlocked with the reciprocating motion of the cylinder to allow fluid flow. Includes a transmission member that simultaneously controls the flow of.

Description

Automatic valve control system for mold circulating water line}

The present invention relates to an automatic valve control device for a mold circulation water line, and more particularly, to an automatic valve control device for a mold circulation water line capable of controlling the flow of air to circulately drain water remaining in a mold. will be.

As is well known, molds are classified into various types such as injection molds for producing plastic (synthetic resin) products, press molds for producing products using steel plates, and die casting molds for producing plastics by melting metal.

Mold work for synthetic resin injection molding, in which products are produced according to the internal shape of the mold by filling injection materials melted at a high temperature in the mold between each mold with high pressure, the flow of synthetic resin reacts very sensitively to the temperature of the mold, so the temperature of the mold It is a very important factor.

Accordingly, the correct mold temperature setting and mold temperature maintenance help to lower the defect rate and maintain the quality of the injection molded product, and the mold temperature controller accurately adjusts the temperature of the mold according to the injection molded product to improve the quality of the molded product. are using

Here, injection molding is a technology for manufacturing materials such as thermosetting resins or thermoplastic resins into various types of injection products, including a metering process of measuring molten resin in a mold, an injection process of filling the molten resin into a mold, and A cooling process for solidifying the filled resin, a mold opening process for opening the cooled mold, and a take-out process for taking out the injection molding molded in the mold are performed in this order.

On the other hand, the cooling process, which is a process for solidifying the resin after injection molding, is a process necessary for uniform heat conduction of the mold and good shape of the injection molding product.

Cooling methods include a medium cooling method in which cooling water flows inside the injection mold and a natural cooling method in which cooling water is naturally cooled.

The present invention is related to a medium cooling method, and Korean Patent Publication No. 10-2014-0022251 relates to a medium cooling method.

According to the prior art, defective products are being mass-produced depending on the temperature of the injection mold, and since molding is currently performed at a temperature of up to 160° C. or less, maintenance costs are too high and facilities are inevitably large.

In addition, the molten synthetic resin is cooled in the process of filling the cavity of the injection mold, which causes many defects in the appearance of the injection molded product, and the temperature distribution of the injection molded product is non-uniform, resulting in deformation or distortion. there is.

In addition, the injection mold cooling system according to the prior art is too far from the cooling tower, cooling device, heating device, etc. to the injection mold in terms of safety design or factory layout, so the supplied cooling water is Since it is difficult to recover, it is composed of pipelines such as a supply line and a recovery line to overcome this.

Also, injection molds need to be replaced depending on the product. When replacing the mold, compressed air supplied through the air line for mold operation, cooling water supplied to the cooling line to cool the mold, and heating water line to preheat the mold There was a problem in that the supplied heating water leaked to the outside while remaining in the mold, contaminating the workplace and the injection device.

In particular, even if malfunctions of shut-off valves that control pipelines occur, it is difficult to shorten the time required for injection molding because it cannot be quickly dealt with unless a skilled technician is present.

In recent years, in order to solve the above-mentioned problems, compressed air is used to discharge the cooling water or heating water remaining in the mold before replacing the mold, and the circulation water is controlled so that the cooling water or heating water is not discharged when the mold is disassembled. You are using the control unit.

As a prior art related to such a circulating water control device, Korean Patent Registration No. 10-1805727 (registered on November 30, 2017), 'circulating water piping control device of an injection mold device' is disclosed.

The prior art is “an air pipe for supplying compressed air for the operation of the injection mold device, a cooling water supply pipe for supplying cooling water to cool the mold, a cooling water discharge pipe for discharging the cooled water after cooling, and a heating water for preheating the mold. In the circulating water piping of the injection mold apparatus consisting of a heated water supply pipe supplied and a heated water discharge pipe through which preheated heated water is discharged, a first air pipe branching from the air pipe is connected to the cooling water supply pipe, and the air pipe By connecting the branched 2nd air pipe to the heating water supply pipe, the air supply to the mold is cut off before the injection mold device is replaced, and the remaining cooling water in the mold is bypassed through the cooling water supply pipe and the heating water supply pipe. And heating water is discharged through the cooling water discharge pipe and the heated water discharge pipe, wherein first and second drain pipes are formed in the cooling water discharge pipe and the heated water discharge pipe, respectively, and the remaining water flowing through the first and second drain pipes flows in a gas-liquid separator, the gas separated in the gas-liquid separator is exhausted, and the liquid is discharged through the first and second liquid pipes connected to the cooling water discharge pipe and the heated water discharge pipe, respectively. device” as the gist of the technology.

However, in the prior art described above, several valves are provided for supplying and blocking cooling water, heating water, and air. Since these valves are operated by respective signals output from the control unit, there is a problem in that malfunction frequently occurs.

In addition, in the prior art described above, valves are installed on the first air pipe and the second air pipe respectively to control the supply and cutoff of air. There was a problem that could not be discharged.

(0001) Republic of Korea Patent Publication No. 10-2014-0022251 (0002) Republic of Korea Patent No. 10-1805727

The present invention was conceived to solve the conventional problems as described above, and an object of the present invention is to prevent malfunction by interlocking several valves for controlling the flow of fluid to drain water remaining in the mold. It is to provide an automatic valve control device for the mold circulation water line.

The present invention for achieving the above object is air supplied to the mold through an air supply pipe, water supplied to the mold through the cooling water supply pipe, and cooling water circulated and drained through the cooling water drain pipe, In the valve automatic control device of the mold circulation water line that automatically controls the flow of hot water that is supplied to the mold through the hot water supply pipe and then circulated through the hot water drain pipe, in order to drain the fluid remaining in the mold, An air valve installed in the air supply pipe to control the flow of air, a cooling water valve installed in the cooling water supply pipe to control the flow of the cooling water, a hot water valve installed in the hot water supply pipe to control the flow of the hot water, A bypass pipe that is branched and has a bypass valve, a first bypass connection pipe connecting an end of the bypass pipe and a point after the cooling water valve of the cooling water supply pipe, and an end of the bypass pipe and a hot water valve of the hot water supply pipe A second bypass connection pipe connecting the points thereafter, valve handles respectively provided on the air valve, the cooling water valve, and the hot water valve so as to be aligned on the orthogonal line of the air supply pipe, the cooling water supply pipe, and the hot water supply pipe, and the A transmission member for simultaneously controlling the flow of fluid by interlocking each valve handle with the reciprocating motion of a cylinder, wherein the transmission member includes a disc crank installed on the valve stems of the air valve, the cooling water valve, and the hot water valve, respectively; and a connecting rod for interlocking the air valve, the cooling water valve, and the hot water valve by the reciprocating motion of the cylinder to simultaneously control the flow of fluid by connecting each of the disk cranks.

The disc crank includes a first disc crank installed on the air valve stem of the air valve, a second disc crank installed on the cooling water valve stem of the cooling water valve, and a third disc crank installed on the hot water valve stem of the hot water valve. , and operating pins respectively provided on one surface of the first to third disc cranks.

The transmission member may further include a guide plate having an arc-shaped guide slit to guide arc sliding of the actuation pin.

The connecting rod may include a first connecting rod connected to transfer the rotational force of the first disc crank to the second disc crank, and a second connecting rod connected to transfer the rotational force of the second disc crank to the third disc crank. can include

One end of the first connecting rod is connected to the first disc crank with a first crank pin, and the other end of the first connecting rod and one end of the second connecting rod are connected to the second disc crank with a second crank pin. The other end of the second connecting rod may be connected to the third disc crank through a third crank pin.

The operating pin may be integrally formed at end portions of the first crank pin to the third crank pin passing through the first disc crank to the third disc crank, respectively.

The transmission member may further include a drive gear installed on the air valve stem, and a driven gear installed on the bypass valve to engage with the drive gear and controlling the air valve in an opposite direction.

According to the present invention implemented by the above-described solution, the air valve, the cooling water valve, and the hot water valve are interlocked in the same direction to drain the cooling water or hot water remaining in the mold, and the bypass valve is operated in the opposite direction to drain the fluid. Since it controls the flow at once, it has a very useful effect to prevent malfunction.

In addition, according to the present invention implemented by the above-described solution, the first disc crank, the second disc crank, and the third disc crank connected by the first connecting rod and the second connecting rod are interlocked by the reciprocating motion of the cylinder, so that the operation It has the effect of preventing malfunction from pollutants such as dust while maintaining stability.

In addition, according to the present invention implemented by the above-described solution, the effect of preventing flow by guiding stable arc sliding of the first disc crank, the second disc crank, and the third disc crank by the guide slit of the guide plate there is.

1 is a system diagram showing a system of a circulation water line according to an embodiment of the present invention.
Figure 2 is an enlarged view showing an enlarged portion 'A' of Figure 1;
Figure 3 is a plan view showing the plane of Figure 2;
Figure 4 is a perspective view showing an exploded state of the disc crank and the guide plate according to an embodiment of the present invention.
Figure 5 is a flow chart showing the flow of the fluid in Figure 1;
Figure 6 is an operation diagram showing the operation of the disc crank in Figure 2;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the present invention.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the examples described in detail below. These examples are provided to more completely explain the present invention to those skilled in the art.

Accordingly, it should be noted that the shapes of the components expressed in the drawings may be exaggerated to emphasize a clearer explanation, and the same members in each drawing are indicated with the same reference numerals.

In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention may be omitted.

First, FIG. 1 is a system diagram showing a system of a circulation water line according to an embodiment of the present invention.

1, the mold circulation water line according to an embodiment of the present invention includes an air supply pipe 100 connected to a mold 10, a cooling water supply pipe 200, a cooling water drain pipe 300, a hot water supply pipe 400, and It includes a hot water drain pipe 500.

The air supply pipe 100 serves to supply air to operate the mold 10 . An air supply valve 110 is installed at the end of the air supply pipe 100 to control the supply of air.

The cooling water supply pipe 200 functions to supply cooling water to cool the mold 10 . A cooling water supply valve 210 is installed at the end of the cooling water supply pipe 200 to control the supply of cooling water.

The cooling water drain pipe 300 serves to drain the cooling water cooling the mold 10 . A cooling water drain valve 310 is installed at the front end of the cooling water drain pipe 300 to regulate cooling water drainage, and a cooling water check valve 320 is installed at the end to prevent the cooling water from flowing backward.

The hot water supply pipe 400 serves to supply hot water to preheat the mold 10 . A hot water supply valve 410 is installed at the end of the hot water supply pipe 400 to control the supply of hot water.

Optionally, hot water supplied from the hot water supply pipe 400 may be heated to a high temperature by a heater and then supplied to the mold 10 .

The hot water drain pipe 500 serves to drain the hot water preheated from the mold 10 . A hot water drain valve 510 is installed at the front end of the hot water drain pipe 500 to control the drainage of hot water, and a hot water check valve 520 is installed at the end to prevent the back flow of hot water.

A rectangle shown by a dashed-dotted line in the center of FIG. 1 represents an automatic valve control device for draining fluid remaining in the mold 10.

1, the automatic valve control device includes an air valve 120 installed in the air supply pipe 100, a cooling water valve 220 installed in the cooling water supply pipe 200, and a hot water valve 420 installed in the hot water supply pipe 400. , the bypass pipe 130 branched from the air supply pipe 100, the first bypass connection pipe 150 connecting the bypass pipe 130 and the cooling water supply pipe 200, the bypass pipe 130 and the hot water A second bypass connection pipe 160 connecting the water supply pipe 400 is included.

The air valve 120 is installed in the air supply pipe 100 and functions to supply or block air in the direction of the air supply valve 110.

2 and 3, the air valve 120 is installed in the air supply pipe 100 and has an air valve casing 121 having a valve seat, and is installed in the air valve casing 121 to open and close the valve seat. It includes an air valve stem 122 to which the valve is connected, and an air valve handle 123 having a round rim for operating the air valve stem 122.

The cooling water valve 220 is installed in the cooling water supply pipe 200 and functions to supply or block cooling water in the direction of the cooling water supply valve 210 .

Referring to FIGS. 2 and 3 , the cooling water valve 220 is installed in the cooling water supply pipe 200 and has a cooling water valve casing 221 having a valve seat, and is installed in the cooling water valve casing 221 to open and close the valve seat. It includes a coolant valve stem 222 connected thereto, and a coolant valve handle 223 having a round rim for operating the coolant valve stem 222 .

The hot water valve 420 is installed in the hot water supply pipe 400 and functions to supply or block hot water in the direction of the hot water supply valve 410 .

2 and 3, the hot water valve 420 is installed in the hot water supply pipe 400 and has a valve seat, the hot water valve casing 421, and is installed in the hot water valve casing 421 to open and close the valve seat. It includes a hot water valve stem 422 connected thereto, and a hot water valve handle 423 having a round rim for operating the hot water valve stem 422.

Here, the air valve 120, the cooling water valve 220, and the hot water valve 420 are aligned on a perpendicular line CL forming a right angle to each pipe.

That is, as shown in FIG. 2, the air valve handle 123, the coolant valve handle 223, and the hot water valve handle 423 are aligned at right angles to each pipe.

At this time, the bypass pipe 130 having the bypass valve 140 is branched from the air supply pipe 100, and at the ends of the bypass pipe 130, the first bypass connection pipe 150 and the second bypass A pass connector 160 is connected.

2 and 3, the bypass valve 140 is installed in the bypass pipe 130 and has a bypass valve casing 141 having a valve seat, and is installed in the bypass valve casing 141 and has a valve seat It includes a bypass valve stem 142 to which the valve is connected to open and close, and a bypass valve handle 143 having a round rim for operating the bypass valve stem 142.

The bypass valve 140 is installed to form a right angle to the bypass pipe 130 and is aligned on the line of the air valve 120, the coolant valve 220, and the hot water valve 420.

The first bypass connection pipe 150 connects the end of the bypass pipe 130 and a point after the cooling water valve 220 of the cooling water supply pipe 200.

The second bypass connection pipe 160 connects an end of the bypass pipe 130 and a point after the hot water valve 420 of the hot water supply pipe 400.

The transmission member serves to transmit the reciprocating motion of the cylinder 600 so as to move the respective valve handles 123, 223, and 423 together.

Here, the cylinder 600 includes a plunger 601 that substantially reciprocates, and an end of the plunger 601 is connected to the first disk crank 610 through an operation arm 602.

Referring to FIGS. 2 and 3, the transmission member is a disc crank installed on the valve stems 122, 222, and 422 of the air valve handle 123, the coolant valve handle 223, and the hot water valve handle 423, respectively. , Connecting rods that interlock the air valve handle 123, the coolant valve handle 223, and the hot water valve handle 423 together with the reciprocating motion of the cylinder 600 to control the flow of fluid simultaneously by connecting each disc crank. includes

The disc crank includes a first disc crank 610 installed on the air valve stem 122, a second disc crank 620 installed on the cooling water valve stem 222, and a third disc installed on the hot water valve stem 422. Crank 630 is included.

The first disc crank 610 is coupled to the air valve stem 122 with a key (key, not shown) and rotates together with the air valve handle 123. A first operating pin 611 is provided on one side of the rear surface of the first disc crank 610 and is guided along an arc of a first guide slit 661 to be described later. Optionally, the first operating pin 611 may be integrally formed at an end of the first crank pin 641 penetrating the first disk crank 610 .

The second disk crank 620 is key-coupled to the coolant valve stem 222 and rotates together with the coolant valve handle 223 . A second operating pin 621 is provided on one side of the rear surface of the second disc crank 620 and is guided along the arc of a second guide slit 662 to be described later. Optionally, the second operating pin 621 may be integrally formed at an end of the second crank pin 642 penetrating the second disk crank 620 .

The third disc crank 630 is key-coupled to the hot water valve stem 422 and rotates together with the hot water valve handle 422 . A third operating pin 631 is provided on one side of the rear surface of the third disk crank 630 and is guided along an arc of a third guide slit 663 to be described later. Optionally, the third operating pin 631 may be integrally formed at an end of the third crank pin 651 penetrating the third disk crank 630 .

The connecting rod functions to transfer the rotational force of the first disc crank 610 to the second disc crank 620 and the third disc crank 630.

These connecting rods are connected to transfer the rotational force of the first disk crank 610 to the second disk crank 620, the first connecting rod 640, and the rotational force of the second disk crank 620 to the third disk crank ( 630) and a second connecting rod 650 that connects to the transmission.

The left end of the first connecting rod 640 is connected to the first disc crank 610 by the first crank pin 641, and the right end of the first connecting rod 640 and the left end of the second connecting rod 650 The end is connected to the second disc crank 620 through the second crank pin 642, and the right end of the second connecting rod 650 is connected to the third disc crank 630 through the third crank pin 651. .

Optionally, the first crank pin 641 may integrally form a first operating pin 611 at an end penetrating the first disc crank 610 .

Optionally, the second crank pin 642 may integrally form a second operating pin 621 at an end penetrating the second disk crank 620 .

Optionally, the third crank pin 651 may integrally form a third operating pin 631 at an end penetrating the third disk crank 630 .

In short, when the first disc crank 610 rotates due to the operation of the cylinder 600, the second disc crank 620 connected to the first connecting rod 640 rotates, together with the second connecting rod 650. Since the connected third disc crank 630 interlocks one after another, the air valve handle 123, the coolant valve handle 223, and the hot water valve handle 423 are simultaneously operated to control the flow of fluid at once.

In addition, the transmission member guides the circular sliding of the actuating pins respectively provided in the first disc crank 610, the second disc crank 620, and the third disc crank 630, which are rotated by the operation of the cylinder 600. A guide plate 660 having slits is further included.

Referring to FIG. 4 , a bore 664 is formed in the guide plate 660 so that the air valve stem 122, the coolant valve stem 222, and the hot water valve stem 422 pass through, and the bore 664 contains air. A bearing 665 is installed for smooth rotation of the valve stem 122, the coolant valve stem 222, and the hot water valve stem 422.

The guide slit guides the first guide slit 661 formed in an arc shape on one surface of the guide plate 660 to guide the arcuate sliding of the first actuating pin 611 and the arcuate sliding of the second actuating pin 621. A second guide slit 662 formed in an arc shape on one surface of the guide plate 660 and a third guide formed in an arc shape on one surface of the guide plate 660 to guide arc sliding of the third actuating pin 631. A slit 663 is included.

The first guide slit 661 is formed as an arc line with a length that guides the arc sliding of the first operating pin 611 to open or close the air valve 120 when the first disk crank 610 rotates. .

The second guide slit 662 is formed as an arc line with a length that guides the circular sliding of the second operating pin 621 to open or close the coolant valve 220 when the second disk crank 620 rotates. .

The third guide slit 663 is formed as an arc line with a length that guides the circular sliding of the third operating pin 631 to open or close the hot water valve 420 when the third disc crank 630 rotates. .

Referring to FIG. 3 , the axial movement of the guide plate 660 is limited by a collar 666 installed on the air valve stem 122 , the coolant valve stem 222 , and the hot water valve stem 422 .

The guide plate 660 guides the stable arc rotation of the first disc crank 610, the second disc crank 620, and the third disc crank 630 interlocked by the cylinder 600 and the connecting rod to move in all directions. prevent it from flowing.

In addition, the transmission member is installed on the air valve stem 122 and installed on the bypass valve stem 142 to be engaged with the drive gear 670 that rotates with the air valve handle 123 and the drive gear 670 to bypass A driven gear 680 for controlling the pass valve 140 in the opposite direction is further included.

In other words, the drive gear 670 is rotated together with the air valve handle 123 by the operation of the cylinder 600 to rotate the driven gear 680 in the opposite direction, thereby bypassing the valve handle 143 for air Since the valve handle 123, the coolant valve handle 223, and the hot water valve handle 423 are rotated in opposite directions, the bypass valve 140 is connected to the air valve 120, the coolant valve 220, and the hot water valve 420. When is in an open state, the opposite state is closed, and when the air valve 120, the coolant valve 220, and the hot water valve 420 are in a closed state, the reverse state is open.

Hereinafter, the action of exhausting the fluid in the mold will be described in detail with reference to FIG. 5 showing the flow of the fluid.

First of all, air supply, cooling water supply and drainage, and hot water supply and drainage for the operation of the mold 10 can be replaced through the above-mentioned prior art, and thus are omitted.

5 is a flow chart showing a flow of fluid for draining all of the cooling water or hot water remaining in the mold 10 before replacing the mold 10.

First, in order to supply air supplied from the air supply pipe 100 to the cooling water supply pipe 200 and the hot water supply pipe 400, the air valve 120, the cooling water valve 220, and the hot water valve 420 are locked. It should work.

To this end, when the operator outputs a corresponding signal, the first disc crank 610 is rotated by the operation of the cylinder 600, the air valve handle 123 moves, and then the second disc connected to the first connecting rod 640. The crank 620 is rotated to move the coolant valve handle 223, and the third disc crank 630 connected to the second connecting rod 650 is rotated to move the hot water valve handle 423, so the air valve ( 120), the cooling water valve 220, and the hot water valve 420 are simultaneously locked.

At this time, the drive gear 670 rotating in the same direction as the air valve handle 123 rotates the driven gear 680 in the opposite direction to open the bypass valve 140.

Then, air supplied from the air supply pipe 100 passes through the open bypass pipe 130 and flows to the first bypass connection pipe 150 and the second bypass connection pipe 160 .

Subsequently, the air flowing through the first bypass connection pipe 150 is supplied to the mold 10 through the end of the cooling water supply pipe 200, and the remaining cooling water is drained through the cooling water drain pipe 300, and the second bypass connection The air flowing through the pipe 160 is supplied to the mold 10 through the end of the hot water supply pipe 400, and the remaining hot water is drained through the hot water drain pipe 500.

According to the above-described embodiment of the present invention, in order to drain the cooling water or hot water remaining in the mold 10, the air valve 120, the cooling water valve 220, and the hot water valve 420 are interlocked in the same direction and bypassed at the same time. Since the flow of the fluid is controlled at once by operating the valve 140 in the opposite direction, malfunction can be prevented.

In addition, according to the embodiment of the present invention, the first disc crank 610 and the second disc crank 620 connected by the first connecting rod 640 and the second connecting rod 650 by the reciprocating motion of the cylinder 600. ) and the third disk crank 630 are interlocked, thereby maintaining stability of operation and at the same time preventing malfunction from pollutants such as dust.

In addition, according to the embodiment of the present invention, the first disk crank 610 and the second guide slit 661, the second guide slit 662, and the third guide slit 663 of the guide plate 660 There is an advantage in that flow can be prevented by guiding stable arc sliding of the two disc crank 620 and the third disc crank 630 .

The embodiments of the present invention described above are only exemplary, and those skilled in the art can understand that various modifications and equivalent other embodiments are possible therefrom.

Therefore, it can be well understood that the present invention is not limited to the forms mentioned in the detailed description above.

Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims, and the present invention includes the technical spirit defined by the appended claims and all modifications, equivalents and It should be understood to include substitutes.

10: mold 100: air supply pipe
120: air valve 200: cooling water supply pipe
220: cooling water valve 300: cooling water drain pipe
320: cooling water valve 400: hot water supply pipe
420: hot water valve 500: hot water drain pipe
610, 620, 630: first disc crank, second disc crank, third disc crank
640, 650: first connecting rod, second connecting rod
660: guide plate

Claims (6)

Air supplied to the mold through the air supply pipe, cooling water supplied to the mold through the cooling water supply pipe and then circulated through the cooling water drain pipe, and hot water supplied to the mold through the hot water supply pipe In the valve automatic control device of the mold circulation water line that automatically controls the flow of hot water circulated through the drain pipe,
In order to drain the fluid remaining in the mold, the air valve installed in the air supply pipe to control the flow of the air, the cooling water valve installed in the cooling water supply pipe to control the flow of the cooling water, and the flow of the hot water A hot water valve installed in the hot water supply pipe, a bypass pipe branched from the air supply pipe and having a bypass valve, a first bypass connection pipe connecting an end of the bypass pipe and a point after the cooling water valve of the cooling water supply pipe, and the A second bypass connection pipe connecting the end of the bypass pipe and a point after the hot water valve of the hot water supply pipe, the air valve and the cooling water valve so as to be aligned on a perpendicular line between the air supply pipe, the cooling water supply pipe, and the hot water supply pipe, and A valve handle provided in each of the hot water valves, and a transmission member for simultaneously controlling the flow of fluid by interlocking each of the valve handles with the reciprocating motion of a cylinder,
The transmission member connects the air valve, the cooling water valve, and the valve stems of the hot water valve, respectively, and the respective disk cranks to simultaneously control the flow of the fluid by reciprocating the air through the cylinder. A valve, a connecting rod for interlocking the cooling water valve and the hot water valve,
The disc crank includes a first disc crank installed on the air valve stem of the air valve, a second disc crank installed on the cooling water valve stem of the cooling water valve, and a third disc crank installed on the hot water valve stem of the hot water valve. , and operation pins respectively provided on one surface of the first to third disc cranks,
The automatic valve control device of the mold circulation water line, characterized in that the transmission member further comprises a guide plate formed with an arc-shaped guide slit to guide the circular sliding of the actuation pin. delete The method of claim 1,
The connecting rod may include a first connecting rod connected to transfer the rotational force of the first disc crank to the second disc crank, and a second connecting rod connected to transfer the rotational force of the second disc crank to the third disc crank. Valve automatic control device of the mold circulation water line, characterized in that it comprises a. The method of claim 3,
One end of the first connecting rod is connected to the first disc crank with a first crank pin, and the other end of the first connecting rod and one end of the second connecting rod are connected to the second disc crank with a second crank pin. and the other end of the second connecting rod is connected to the third disc crank by a third crank pin. The method of claim 4,
The valve automatic control device of the mold circulation water line, characterized in that the operating pin is integrally formed at the end of the first crank pin to the third crank pin passing through the first disc crank to the third disc crank, respectively. In claim 1,
The electric member,
A valve automatic control of the mold circulation water line, characterized in that it further comprises a drive gear installed on the air valve stem, and a driven gear installed on the bypass valve to engage with the drive gear and controlling in the opposite direction of the air valve. Device.

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