KR20180099583A - Cooling structure for mold and method there of - Google Patents

Abstract

The present invention relates to a cooling structure for a mold and, more specifically, relates to a cooling structure for a mold and a control method thereof, wherein the cooling structure for a mold comprises: an upper mold and a lower mold vertically arranged to operate to be in contact with each other or to be separated from each other; a plurality of upper mold ventilation holes formed to vertically penetrate into the upper mold; and a plurality of lower mold ventilation holes formed to vertically penetrate into the lower mold, wherein air flows through the upper mold ventilation holes and the lower mold ventilation holes. Therefore, a mold and a product are cooled at the same time to quickly make the shape of the product and reduce a product forming cycle time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mold cooling structure,

More particularly, the present invention relates to a mold cooling structure, and more particularly, to a mold cooling structure capable of simultaneously cooling a mold and a product by flowing air through an upper mold vent hole and a lower mold vent hole, Cooling structure.

In general, a mold is a molding tool used to make a product of a given shape. It is used for forming molds made of iron or other metals used for making castings, plastic molding, etc., and thin plates or plastic plates And a metallic mold used for completing a predetermined shape by sandwiching the back.

In the case of casting molds, a stronger mold is required as the pressure applied to the melting metal of the casting metal or the molten metal is higher when poured into the casting mold. Normally, steel is used as the casting mold, but heat resistant steel or tool steel may be used have.

1 is a sectional view showing a conventional mold cooling structure. 1, a conventional mold structure is provided with an upper fixing plate 1 and a lower fixing plate 2 in a vertical direction, a fixed side mold plate 3 is fixed to the upper fixing plate 1, 2, the movable side template 4 is formed. In the conventional mold structure, a cooling circuit (cooling channel) 10 is provided in the stationary-side mold plate 2 and the movable-side mold plate 4 to cool the mold. The temperature regulating fluid commonly referred to as cooling water is injected into the cooling circuit 10 to cool the stationary side mold plate 2 and the movable side mold plate 4. [

However, in the conventional mold cooling structure, the temperature controlling fluid does not come into direct contact with the molded product but passes only the cooling circuit 10 inside the mold, so that the cooling time takes too long.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a mold cooling structure capable of rapidly cooling a top mold, a bottom mold and a product, It has its purpose.

Another object of the present invention is to provide a mold cooling structure that can easily cool a material that is difficult to cool, such as fiber materials, and can significantly reduce the cooling cycle time.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the description of the present invention .

According to an aspect of the present invention, there is provided a mold cooling structure comprising: an upper mold and a lower mold, the upper mold and the lower mold operating to be in contact with or separate from each other; A plurality of upper air vent holes formed to pass through the upper die in a vertical direction; And a plurality of lower mold vent holes formed to penetrate the lower mold in the vertical direction; And air flows through the upper and lower ventilation holes.

Further, the mold cooling structure according to the embodiment of the present invention is characterized in that the upper mold and the lower mold are connected to the upper mold supply line and the lower mold supply line respectively through the upper mold and the lower mold and the upper air and the lower air, An air compressor for supplying air; And the compressed air transferred from the air compressor to the upper ventilation hole and the lower ventilation hole is discharged to the outside when the upper mold and the lower mold are separated from each other.

According to another aspect of the present invention, there is provided a mold cooling structure including: an upper mold valve selectively installed on a top supply line between the upper mold and the upper mold; And a lower mold valve selectively installed on a lower mold supply line between the lower mold and the lower mold; .

The mold cooling structure according to an embodiment of the present invention includes an air compressor connected to the lower mold and the lower mold supply line to supply compressed air to the lower mold vent hole through the lower mold air tank; An upper mold blower connected to the upper mold and the upper mold discharge line to discharge compressed air to the outside; And the compressed air transferred from the air compressor to the lower ventilation hole is discharged to the outside through the upper ventilation hole.

Furthermore, a mold cooling structure according to an embodiment of the present invention includes a lower mold valve selectively installed on a lower mold supply line between the lower mold air tank and the lower mold, .

According to another aspect of the present invention, there is provided a mold cooling structure including: a first mold and a second mold disposed on both sides of a product to be molded, A plurality of first holes formed through the first mold so as to face one side of the product; And a plurality of second holes formed through the second mold to face the other side of the product; Wherein air flows through at least one of the plurality of first holes and the plurality of second holes.

Further, in the mold cooling structure according to the embodiment of the present invention, the first mold and the second mold are coupled so as to face each other in the vertical direction, and the first hole and the second hole are formed so as to face each other in the vertical direction desirable.

In addition, in the mold cooling structure according to the embodiment of the present invention, it is preferable that air flows from one of the first hole and the second hole, and air flows out to the other one of the first hole and the second hole.

Further, the mold cooling structure according to an embodiment of the present invention may further include a cooling pipe provided in at least one of the first mold and the second mold for flowing the temperature controlling fluid, wherein the temperature controlling fluid and the air It is preferable to cool by at least one.

According to another aspect of the present invention, there is provided a method of controlling a mold cooling structure, including: forming compressed air by operating an air compressor; And passing the compressed air through a vent hole passing through the mold.

Furthermore, it is preferable that the method for controlling the mold cooling structure according to the embodiment of the present invention further includes a step of discharging the compressed air passing through the vent hole by the blower.

Further, And a second mold coupled to the first mold, wherein the vent hole is formed in the first vent hole formed in the first mold and in the second mold, And a second vent hole formed in the second vent hole.

In addition, the step of passing the compressed air through the vent hole passing through the mold may include the steps of: flowing the compressed air through the first vent hole; And flowing the introduced air through the second ventilation hole.

The present invention having the above-described structure can cool the product simultaneously with the upper mold and the lower mold, unlike the conventional mold cooling structure which cools only the mold like the upper mold or the lower mold, This has the effect of shortening the cycle time.

In addition, the present invention has the effect of facilitating material cooling since materials such as fiber materials, which are difficult to cool, can be directly cooled through the upper and lower ventilation holes.

Furthermore, since the present invention can utilize the water-cooling type (fluid) and the air-cooling type (air) simultaneously, the cooling cycle time is reduced to about 50% as compared with the conventional mold cooling structure.

1 is a sectional view showing a conventional mold cooling structure;
FIG. 2 is a plan view showing a shape of a polygonal mold according to an embodiment of the present invention. FIG.
3 is a view illustrating a mold cooling structure according to an embodiment of the present invention.
4 is a view showing a mold cooling structure according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that the present invention can be easily carried out by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention.

FIG. 2 is a plan view showing a shape of a mold according to an embodiment of the present invention, and FIG. 3 is a view illustrating a mold cooling structure according to an embodiment of the present invention.

As shown in the figure, the mold cooling structure according to the present invention includes a top mold 100, a bottom mold 200, and a top mold 100. The top mold 100 and the top mold 200 are vertically arranged. A plurality of upper air holes 102 and a plurality of lower air holes 202 formed to penetrate the lower mold 200 in the vertical direction.

The upper mold 100 and the lower mold 200 may be disposed on both sides of the product to be molded and the upper air hole 102 may be formed through the upper mold 100 to face the upper surface of the product And the lower ventilation hole 202 may be formed through the lower mold 200 so as to face the lower surface of the product.

The upper and lower ventilation holes 102 and 202, which pass through the upper mold 100 and the lower mold 200 in the up and down direction (vertical direction), serve as passages through which the air flows, And the product cools simultaneously.

The upper die 100 and the lower die 200 are provided with a plurality of upper cooling holes 102 and lower cooling holes 102 so as not to interfere with the upper and lower cooling holes in the direction orthogonal to the upper and lower cooling holes 102, The upper cooling pipe 104 and the lower cooling pipe 204 are provided to cool the upper mold 100 and the lower mold 200 themselves . The temperature controlling fluid may flow in the upper cooling pipe 104 and the lower cooling pipe 204. The air flowing through the vent holes 102 and 202 may be independently supplied to the upper mold 100 and the lower mold 200, Can be cooled.

At this time, the air flowing through the vent holes 102 and 202 is supplied to the space between the upper die 100 and the lower die 200, and the supplied air can directly contact the surface of the product, Can be directly cooled by the air.

On the other hand, the air supplied through the vent holes 102 and 202 and the temperature controlling fluid flow independently of each other, and the product can be cooled independently.

The temperature controlling fluid flows only through the upper mold or the lower mold to cool the upper mold or the lower mold so that the product itself is not directly cooled. However, the air passes through the upper mold or the lower mold and flows between the upper mold and the lower mold The product can be cooled directly.

3, the upper mold 100 and the lower mold 200 are connected to the air compressor 300 through the upper supply line 112 and the lower supply line 212, respectively, and the air compressor 300 Compressed air is formed in the upper air tank 110 and the lower air tank 210, respectively, and the compressed air is supplied to the upper air hole 102 and the lower air hole 202, respectively.

The compressed air supplied to the upper air hole 102 and the lower air hole 202 is supplied to the upper mold 100 and the lower mold 200 when the upper mold 100 and the lower mold 200 are in contact with each other, And is discharged naturally to the outside when the upper die 100 and the lower die 200 are separated from each other.

At this time, an upper valve 120 is installed on the upper supply line 112 between the upper air tank 110 and the upper mold 100 to selectively open and close the lower air tank 210 and the lower mold 200, A lower mold valve 220 is installed and selectively opened and closed on the lower mold supply line 212.

The upper mold 120 and the lower mold 220 serve to block or flow the compressed air supplied to the upper mold 100 and the lower mold 200, respectively. The upper mold 100 and the lower mold 200 And is turned off when the upper die 100 and the lower die 200 are separated from each other.

4 is a view showing a mold cooling structure according to another embodiment of the present invention.

The lower mold 200 is connected to the air compressor 300 as a lower mold supply line 212 in the same manner as the embodiment and when the air compressor 300 is operated, Compressed air is formed in the connected lower mold air tank 210, and the compressed air is supplied to the lower mold vent hole 202.

However, unlike the embodiment of the present invention, the upper mold 100 is connected to the upper mold blower 130 by the upper mold releasing line 132, and the upper mold blower 130 is transferred from the lower mold vent hole 202 The compressed air is discharged to the outside.

In other words, as shown in FIG. 3, in one embodiment of the present invention, compressed air is delivered in both directions through the upper and lower ventilation holes 102 and 202, The compressed air is delivered in one direction only through the lower-shaped ventilation hole 202 and is discharged through the upper-shaped ventilation hole 102.

As in the embodiment of the present invention, a lower mold valve 220 is installed on the lower mold supply line 212 between the lower mold 210 and the lower mold 200 to selectively open and close the lower mold, 220 are turned on when the upper mold 100 and the lower mold 200 are closed and operated when the upper mold 130 is operated to forcibly discharge the air.

The upper mold 100 and the lower mold 200 may be understood as a first mold and a second mold, and the first ventilation hole and the second ventilation hole The two ventilation holes can be understood as a first hole and a second hole.

Hereinafter, a method of controlling a mold cooling apparatus according to an embodiment of the present invention will be described.

Referring to FIG. 3, first, the air compressor 300 is operated to form compressed air (S1). The compressed air may be formed in the air tanks 110 and 210 and may be formed in the upper air tank 110 and the lower air tank 210, respectively.

Next, the molds 100 and 200 are closed and the valves 120 and 220 are opened (S2). At this time, the valves 120 and 220 can be opened at the same time, but can be opened with a time difference. For example, the lower valve 220 may be opened after a certain time has elapsed after the upper valve 120 is opened. As the valves 120 and 220 are opened, compressed air flows into the molds 100 and 200 to mold and cool the material.

Finally, the valves 120 and 220 are closed and the molds 100 and 200 are separated (S3). With the separation of the molds 100 and 200, the air introduced into the mold can be discharged.

Hereinafter, a control method of the mold cooling apparatus according to another embodiment of the present invention will be described.

Referring to FIG. 4, first, the air compressor 300 is operated to form compressed air (S10). Step S10 is the same as step S1. However, another embodiment of the present invention differs in that only one of the upper air tank 110 and the lower air tank 210 is provided. For example, only the lower type air tank 210 may be provided.

Then, the molds 100 and 200 are closed and the valve 220 is opened (S20). Unlike the previous embodiment, the compressed air in the air tank 210 flows into one of the molds 200 to which the valve 220 is connected and the other one of the molds 200 to which the valve 220 is not connected, Lt; / RTI > For example, compressed air may flow in the lower mold 100 and compressed air may flow out of the lower mold 200.

Then, the blower is operated (S30). The blower forcedly flows air into the inside of the mold.

Finally, the valve 220 is closed and the molds 100 and 200 are separated (S40).

The present invention having the above-described structure can cool the product simultaneously with the upper mold 100 and the lower mold 200, unlike the conventional mold cooling structure which only cools the mold itself. Therefore, This has the effect of shortening the cycle time.

Further, the present invention has the effect of facilitating material cooling since materials such as fiber materials, which are difficult to cool, can be directly cooled through the upper and lower ventilation holes 102 and 202.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be apparent to those of ordinary skill in the art.

100: Hexagon mold
102: Upper air vent hole
104: Top cooling pipe
110: Upper air tank
112: Top feed line
120: Hollow Valve
130: Top blower
132: Upper drain line
200: Lower mold
202: Lower ventilation hole
204: Lower cooling pipe
210: Lower air tank
212: Lower mold supply line
220: Lower valve
300: Air Compressor

Claims (1)

A top mold and a bottom mold disposed vertically and being in contact with or separated from each other;
A plurality of upper air vent holes formed to pass through the upper die in a vertical direction;
A plurality of lower mold ventilation holes formed to penetrate the lower mold in a vertical direction;
And connected to the lower mold and the lower mold supply line, through the lower mold air tank,
An air compressor for supplying compressed air to the wind hole;
A lower mold valve selectively installed on a lower mold supply line between the lower mold air tank and the lower mold metal; And
And a top blower connected to the top mold and the top mold discharge line for discharging compressed air to the outside,
And the compressed air transferred from the air compressor to the lower-type ventilation hole is discharged to the outside through the upper-shaped ventilation hole in accordance with the upper-stage blower operation.

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