KR20100076410A - A cooling water nozzle of plug-in type for a die cooling - Google Patents

Abstract

PURPOSE: A plug-in type cooling water nozzle for cooling a mold is provided to improve cooling efficiency by cooling the heat of cooling water. CONSTITUTION: A plug-in type cooling water nozzle for cooling a mold comprises an inlet pipe(110) and a connector(120). The cross section of the inlet pipe is smaller than that of the cooling water channel. The inlet pipe is inserted into the cooling water channel and lets cooling water to flow into the inside of the mold. One side of the connector is seal-connected to the cooling water channel. The connector supports the inlet pipe in order to be located at the center of the cooling water channel. One side of the cooling water channel is blocked.

Description

Plug-in type coolant nozzle for mold cooling {A COOLING WATER NOZZLE OF PLUG-IN TYPE FOR A DIE COOLING}

This document relates to a coolant nozzle for mold cooling, and more particularly, to a plug-in type coolant nozzle which can be used to form a closed cooling water channel and insert into one channel for cooling the mold.

Cooling technology is generally applied to create a channel (path) through which the coolant flows and to flow the coolant at a constant flow rate. It can be used during the material reinforcement technique involving the transformation of microstructures by inducing rapid cooling by the mold in the hot forming press process for forming steel materials, or it can be used to prevent the molding failure due to the deformation heat generated during the continuous process. .

In addition, in lightweight metals such as aluminum and magnesium, the mold is heated to a high temperature in order to overcome low deformation properties at room temperature and to apply superplastic forming at a high temperature. At this time, a mold cooling technique may be used to protect the press equipment by preventing the molding equipment from being heated up due to heat transfer caused by the mold heating. In particular, as a technique for forming magnesium, a process of improving moldability by using local cooling of a mold or locally increasing a temperature for forming a difficult mold shape in the case of steel is being developed. Cooling technology through the cooling water circulation is being applied.

1 to 4 are views for explaining a cooling technique used in the prior art.

First, FIG. 1 shows a coolant channel formed to penetrate a mold, FIG. 2 shows a position where a channel should be blocked to prevent water discharge, and FIG. 3 shows a shape of stoppers blocking a mold channel. 4 shows the mold after inserting the stopper to block the channel.

After processing the through-shaped coolant channel 11 using a straight drill in the mold 10, a method of inserting the stopper 13 in order to make the passage in which the coolant flows into a closed space is mainly applied. In this case, as shown in FIG. 1, a complicated process that requires drilling while rotating the mold 10 at various angles is required to interconnect the coolant channels 11. In order to easily flow the coolant into the penetrating coolant channel 11, the stoppers 13 respectively processed according to the channel shape must be fitted into the stopper insertion position shown in FIG. In addition, in order to make the coolant channel 11 of the entire mold 10 into the closed channel, as shown in FIG. 3, stoppers 13 having various shapes must be inserted at various angles and positions. Shape of the mold 10 is completed as shown in FIG. This type of channel processing necessitates the process of forming and reclosing unnecessary channels and transferring and rotating the mold.

Since a mold for molding an automotive part usually weighs several tons, a drill process in which the mold itself needs to be rotated is a very high-risk operation, and a separate jig must be provided to easily rotate the mold. In order to solve this problem, a coolant inlet and an outlet may be installed in each of the perforated coolant channels, but a large number of coolant pipings may limit the installation and press operation of molds for forming operations, and thus they are limited. do.

This document aims to provide a plug-in type coolant nozzle for cooling a mold in order to improve the cooling channel design and processing method of a complicated mold as described above.

The plug-in type cooling water nozzle for cooling the mold as one means for solving the above-mentioned problems is formed in a cross-sectional area smaller than the cooling water channel formed in the mold, and is inserted into the cooling water channel to introduce cooling water into the cooling water channel. And an inlet pipe configured to seally connect with one side of the coolant channel, and to support the inlet pipe so that the inlet pipe can be positioned at the center of the coolant channel when the inlet pipe is inserted into the coolant channel.

In addition, one side of the coolant channel is blocked, and when coolant flows through the inlet pipe, coolant flows between the inlet pipe outer surface and the coolant channel inner surface to cool the mold and is discharged through the connector.

In the connector, a plurality of protrusions formed inside the connector may be connected to the inlet pipe to support the inlet pipe.

The storage tank may further include a storage tank configured to temporarily store the cooling water introduced into or discharged from the cooling water channel.

The storage tank is temporarily connected to the connection port and then temporarily stored in the storage tank for drainage configured to be discharged through the outlet after storing the discharged water and the water supply pipe connected to the water supply pipe temporarily stored in a state in which a constant pressure is maintained. And an inlet storage tank configured to push coolant into the channel through the inlet pipe.

The storage tank may be integrally formed with the inlet pipe and the connector.

The storage tank may be provided with an intake tap and a drain tap that are interconnected with a storage tank included in another cooling water nozzle.

It may further include a valve for adjusting the flow rate of the cooling water flowing into the inlet pipe.

According to the present invention, it is possible to reduce the number of channels formed in the mold by forming a cooling water channel in the mold in a clogged form and enabling water supply and drainage through one channel.

In addition, there is an effect that it is not necessary to use the stopper used to block the conventional channel.

In addition, since the water supply and drainage are performed in one channel, the heat of the cooling water drained can be cooled, thereby indirectly increasing the cooling efficiency.

In addition, since the amount of cooling water flowing into the plurality of cooling water channels can be adjusted for each channel, the cooling rate can be partially adjusted.

In addition, the individual nozzles can also be connected to each other and when using the coolant nozzle formed integrally with the storage tank to increase the space efficiency, there is an effect to prevent the leakage (leakage) is simple structured.

In addition, according to the intention of the coolant designer, the coolant circulation system may be simply configured in various forms to cool the mold.

Hereinafter, embodiments of the present invention regarding a plug-in type cooling water nozzle for cooling a mold will be described.

According to embodiments of the present invention, after drilling to form a closed cooling water channel in a region requiring cooling, one coolant nozzle may be inserted by simply inserting the cooling water nozzle according to the present invention into the generated cooling water channel in a plug-in manner. At the same time, allow cooling water supply and drainage.

5 is a structural diagram of a coolant nozzle of a plug-in type for cooling a mold according to an embodiment of the present invention. In particular, Fig. 5 (a) shows an isometric view of the plug-in type cooling water nozzle for mold cooling, (b) shows a side view, (c) shows a rear view and (d) shows a front view. .

6 shows a mold having a coolant channel blocked at one side according to an embodiment of the present invention, and FIG. 7 shows a projection plan view after a coolant nozzle is inserted into a coolant channel of a mold according to an embodiment of the present invention. 8 is a cross-sectional view after the cooling water nozzle is inserted into the cooling water channel of the mold according to an embodiment of the present invention.

As shown in FIG. 5, the plug-in type coolant nozzle 100 for cooling the mold according to the present embodiment has a smaller cross-sectional area than the coolant channel 11 formed in the mold 10, and has a coolant channel ( 11) the water inlet pipe 110 is inserted into the mold 10 to introduce the cooling water. And, one side is made to be connected to the cooling water channel 11, the connector for supporting the inlet pipe so that the inlet pipe 110 can be located in the center of the coolant channel 11 when inserted into the coolant channel (11) 120.

In addition, the connector 120, a plurality of protrusions 130 formed in the inner side of the inlet pipe 110 may be connected to the inlet pipe 110 to support the inlet pipe 110. For example, the outer annular bolt coupled to the coolant channel 11 of the mold 10 and the three projections 130 opened at 120 ° are obtained as shown in the rear view shown in FIG. 5C. The tube 110 is supported to be located in the center of the coolant channel 11.

Referring to FIG. 6, in order to apply the coolant nozzle according to the present exemplary embodiment, the shape of the mold 10 in which one side of the straight line is blocked is formed. Since the water supply and drainage are possible at the same time in the closed channel, it is not necessary to use various types of stoppers applied in the prior art, and a simple structure can be applied as compared with the conventional channel processing method.

As shown in FIG. 7, the coolant flows after the plug-in type coolant nozzle 100 for cooling the mold is inserted into the coolant channel 11 formed in the mold 10, where the coolant channel ( 11) is formed so that one side is blocked as shown in FIG. And, the coolant is supplied into the channel 11 through the inlet pipe 110 located in the center of the coolant nozzle 100 as shown in FIG. At this time, the inlet pipe 110 is preferably extended to the closed end of the cooling water channel (11).

Then, the coolant exits the water inlet pipe 110 and circulates toward the inlet of the channel and comes into direct contact with the mold 10 and directly cools the mold 10. The inlet pipe 110 serves to block the liquid drained at the same time as supplying the cooling water, and cools the heat of the liquid drained to the outer surface of the inlet pipe 110 through the coolant flowing through the inlet pipe 110. Can be added to increase cooling efficiency.

The nozzles designed for cooling water circulation can be operated in connection with direct or intermediate connecting hoses with cooling water storage tanks configured to temporarily store cooling water entering or exiting the cooling water channels. At this time, the role of the storage tank is to maintain the circulation of the cooling water supply and drainage of the cooling water by storing the cooling water at a constant pressure may be applied by integrally combined with the nozzle designed the direct cooling water storage tank.

9 is a block diagram of a storage tank connected to a coolant nozzle according to an exemplary embodiment of the present invention. 10 is a view showing a state in which a storage tank is connected to a coolant nozzle according to an embodiment of the present invention, and FIG. 11 is a plan view after the coolant nozzle is inserted into a coolant channel of a mold according to an embodiment of the present invention. 12 is a cross-sectional view after the coolant nozzle to which the storage tank is connected is inserted into the coolant channel of the mold according to an embodiment of the present invention.

Referring to FIG. 9, the storage tank according to the present embodiment temporarily stores the cooling water discharged by being connected to the connector and temporarily discharges the cooling water obtained by being connected to the storage tank 210 and the water inlet pipe configured to discharge through the outlet. It may include an inlet storage tank 220 configured to push the coolant into the channel through the inlet pipe in a state where a constant pressure is maintained after the storage.

In addition, a tab that may be connected to an external connection hose or a raw water pipe may be formed to deliver the cooling water introduced into and discharged from the cooling water nozzle to the outside. As described above, when the storage tank is divided into the storage tank 210 for drainage and the storage tank 220 for intake, the tap also includes the storage tank 210 for drainage with the drain tap 230 and the intake tap 240. It is preferably formed in each of the storage tanks 220 for acquisition. In this case, the tabs formed in the plurality of storage tanks are configured to be interconnected with each other on the left and right sides of each storage tank, so that one raw water supply pipe and one drainage water pipe are connected to one integrated nozzle according to the present embodiment. The connection allows full coolant circulation and allows the mold to cool.

In addition, as described above, the drainage storage tank 210 is coupled to the connector of the coolant nozzle according to the present embodiment, that is, the first protrusion 260 for connecting with the annular bolt, and the storage tank 220 for acquisition is obtained. The second protrusion 250 for connecting with the pipe is coupled. As shown in FIG. 9, the second protrusion 250 may be formed higher than the first protrusion 260, or conversely, the inlet pipe may be formed longer than the connector so that the incoming cooling water and the draining cooling water are not easily mixed with each other. can do.

As shown in FIG. 10, the inlet pipe of the coolant nozzle 100 is connected to a second protrusion 250 formed in the inlet storage tank 220, and the annular bolt of the coolant nozzle 100 is a storage tank for drainage. It is connected to the first protrusion 260 formed in 210. 11 illustrates a plan view of a state in which the coolant nozzle 100 connected to the storage tank is inserted into the coolant channel formed in the mold.

And, referring to the cross-sectional view shown in Figure 12 as described above the cooling water storage tank 200 according to the present embodiment has a form consisting of two stages of independent storage space, the storage space on the left, that is, storage for drainage The tank 210 is directly connected to the annular bolt of the coolant nozzle 100 and temporarily discharges the drained liquid through the outlet, and the storage space on the right, that is, the inlet storage tank 220 is obtained from the coolant nozzle 100. It is directly connected to the pipe 110 and temporarily stores the obtained coolant and operates to push the coolant into the channel through the inlet pipe 110 while maintaining a constant pressure.

13 is a block diagram showing a state in which a storage tank is integrally connected to a cooling water nozzle according to an embodiment of the present invention. And, Figure 14 is a plan view showing a state in which the cooling water nozzle is integrated with the storage tank is inserted into the mold according to an embodiment of the present invention.

As shown in FIG. 13, an inlet pipe 100 and a storage tank 200 are integrally connected to the cooling water nozzle 300 according to the present embodiment. At this time, the storage tank 200 has a form consisting of two stages of independent storage space as described above, wherein the storage space on the left side, that is, the storage tank 210 for drainage is the cooling water directly coupled to the cooling water channel inlet formed in the mold The liquid drained by being connected to the connection port of the nozzle 300 is temporarily stored and discharged through the outlet, and the storage space on the right, that is, the storage tank 220 for inlet is directly connected to the inlet pipe 110 of the coolant nozzle 300. And temporarily stores the obtained cooling water and operates to push the cooling water into the channel through the inlet pipe 110 to maintain a constant pressure.

In addition, a tab that may be connected to an external connection hose or a raw water pipe may be formed to deliver the cooling water introduced into and discharged from the cooling water nozzle to the outside. As described above, when the storage tank is divided into the storage tank 210 for drainage and the storage tank 220 for intake, the tap also includes the storage tank 210 for drainage with the drain tap 230 and the intake tap 240. It is preferably formed in each of the storage tanks 220 for acquisition. In this case, the tabs formed in the plurality of storage tanks are configured to be interconnected with each other on the left and right sides of each storage tank, as shown in FIG. By connecting to one integrated nozzle according to the entire coolant circulation is possible and can be made to cool the mold (10).

15 is a plan view illustrating a state in which a coolant nozzle is inserted into a mold according to two embodiments of the present disclosure.

According to the present embodiment it is possible to create a single coolant channel only by drilling once and insert the coolant nozzle according to the present invention into the coolant channel thus formed as shown in FIG. 15 and connect the coolant storage tank or the coolant in which the storage tank is integrally connected. Inserting the nozzle allows coolant circulation, allowing the mold to be easily cooled.

In FIG. 15, the left three coolant channels are connected to an integrated coolant nozzle to form a coolant circulation system, and the right two coolant channels are inserted into a coolant nozzle and a coolant storage tank is separated to connect a coolant circulation system. By utilizing the cooling water nozzle of the structure designed in the present invention as in the present embodiment will be able to simply cool the mold by configuring the cooling water circulation system in various forms according to the intention of the cooling water designer.

16 is a view showing a coolant nozzle equipped with a valve according to an embodiment of the present invention.

As shown in FIG. 16, the coolant nozzle 300 according to the present exemplary embodiment may further include a valve 400 for adjusting the flow rate of the coolant flowing into the inlet pipe of the coolant nozzle 300. Here, the form of the valve 400 additionally mounted according to the present embodiment may be made of a general valve for controlling the fluid flow inside the pipe, such as a plug valve or a butterfly valve.

The valve 400 according to the present embodiment is configured to adjust the flow rate of each coolant nozzle 300 when a plurality of coolant nozzles are used in the mold 10. By controlling the amount of cooling water through the valve 400, the cooling speed of the mold 10 may be reduced, and cooling efficiency may be adjusted to each cooling water nozzle 300 when pursuing a change in physical properties according to the thermal history of the workpiece. Independent control of each) allows easy implementation of desirable cooling designs to achieve heterogeneous physical properties.

For example, when manufacturing a high-strength part by heating the iron plate material at high temperature and then quenching it with a mold at room temperature, the mechanical strength of the part material increases but has a very low elongation. Although the use of is limited, in the conventional process was designed to flow the cooling water at all times in the mold was not able to control the cooling efficiency.

However, the cooling water nozzle 300 according to the present embodiment can independently control individual cooling efficiency through the valve 400 mounted to each nozzle, so that the cooling design according to the position of the mold and the ductility demand area of the component is different. It can be applied freely and it is possible to change the distribution of cooling efficiency in various aspects, which will shorten the process development period and cost. That is, according to the present embodiment, it is easy to apply a method of lowering the cooling efficiency of a mold position at which a part is molded in a part of a part region where a part is required to be locally shaped or functionally, to provide ductility in a desired direction. There will be.

Although described above with reference to the drawings and embodiments, those skilled in the art that the present invention can be variously modified and changed within the scope without departing from the spirit of the invention described in the claims below I can understand.

1 to 4 are views for explaining a cooling technique used in the prior art.

5 is a structural diagram of a coolant nozzle of a plug-in type for cooling a mold according to an embodiment of the present invention.

6 is a mold having a coolant channel blocked on one side in accordance with an embodiment of the present invention.

7 is a top view of the projection after the coolant nozzle is inserted into the coolant channel of the mold in accordance with one embodiment of the present invention.

8 is a cross-sectional view after the cooling water nozzle is inserted into the cooling water channel of the mold according to an embodiment of the present invention.

Figure 9 is a block diagram of a storage tank connected to the coolant nozzle according to an embodiment of the present invention.

10 is a view showing a state in which a storage tank is connected to a coolant nozzle according to an embodiment of the present invention.

Figure 11 is a plan view after the cooling water nozzle is inserted into the cooling water channel of the mold according to an embodiment of the present invention.

12 is a cross-sectional view after the cooling water nozzle connected to the storage tank is inserted into the cooling water channel of the mold according to an embodiment of the present invention.

Figure 13 is a block diagram showing a state in which the storage tank is integrally connected to the cooling water nozzle according to an embodiment of the present invention.

14 is a plan view showing a state in which a coolant nozzle in which a storage tank is integrated is inserted into a mold according to an embodiment of the present invention.

15 is a plan view showing a state in which a coolant nozzle is inserted into a mold according to two embodiments of the present invention.

16 illustrates a coolant nozzle equipped with a valve according to an embodiment of the present invention.

<Description of the code for the main configuration of the drawings>

10: Mold 11: Coolant Channel

100: cooling water nozzle 110: inlet pipe

120: connector 130: projection

200: storage tank 210: storage tank for drainage

220: water storage tank 230: drain tap

240: acquisition tab 250: projection

260: projection 300: integrated coolant nozzle

400: valve

Claims (7)

An inlet pipe made of a cross-sectional area smaller than that of the coolant channel formed in the mold and inserted into the coolant channel to introduce the coolant into the mold; And One end is made to seal the cooling water channel, the connector for supporting the inlet pipe so that it can be located in the center of the coolant channel when the inlet pipe is inserted into the coolant channel Including, but one side of the cooling water channel is blocked, when the cooling water flows through the inlet pipe, the cooling water flows between the inlet pipe outer surface and the mold inner surface to cool the mold, and is configured to be discharged through the connector, Plug-in type coolant nozzle for mold cooling. The method according to claim 1, The connector, the plurality of projections formed in the inner side of the connector is connected to the inlet pipe to support the inlet pipe, plug-in type cooling water nozzle for cooling the mold. The method according to claim 1, And a storage tank configured to temporarily store the coolant introduced or discharged into the coolant channel. The method according to claim 3, The storage tank is temporarily connected to the connection port and then temporarily stored in the storage tank for drainage configured to be discharged through the outlet after storing the discharged water and the water supply pipe connected to the water supply pipe temporarily stored in a state in which a constant pressure is maintained. And an inlet storage tank configured to push the coolant into the channel through the inlet pipe. The method according to claim 3 or 4, The storage tank is a plug-in type coolant nozzle for cooling the mold, characterized in that the integrated configuration with the inlet pipe and the connector. The method according to claim 5, The storage tank is a plug-in type cooling water nozzle for cooling the mold, characterized in that the intake tab and the drain tab are interconnected with the storage tank included in the other cooling water nozzle. The method according to claim 1, The plug-in type cooling water nozzle for cooling the mold, characterized in that it further comprises a valve for adjusting the flow rate of the cooling water flowing into the inlet pipe.

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