KR20090066027A

KR20090066027A - Cooling device for mold assembly

Info

Publication number: KR20090066027A
Application number: KR1020070133613A
Authority: KR
Inventors: 장명안
Original assignee: 한국단자공업 주식회사
Priority date: 2007-12-18
Filing date: 2007-12-18
Publication date: 2009-06-23

Abstract

A cooling device of a mold assembly is provided to improve workability by easily processing a coolant path regardless of the inner structure of the mold assembly. A cooling device of a mold assembly comprises a first template(15), a second template(35), and a cooling pipe(50). The first template is installed at a fixing side plate(10) of a molder. The first template comprises a first core(20) having a shape corresponding to the shape of a product in one side. The second template is installed at the driving side plate(30) of the molder. The second template selectively adheres to the first template. The second template comprises a second core(40) making a space corresponding to the shape of a product with operating with the first core. The cooling pipe is inserted into a mounting channel in order to be separated.

Description

Cooling device for mold assembly

The present invention relates to a cooling device for a mold assembly, and more particularly to a cooling device for cooling the core and the product provided in the mold assembly.

1 is a cross-sectional view of a configuration of a cooling apparatus of a mold assembly according to the prior art.

According to this, the fixed side plate 1 is provided on one side of the mold assembly, and the movable side plate 2 is provided on the opposite side. An injection hole (not shown) is formed through one side of the fixed side plate 1. The injection port is a portion to which a synthetic resin, which is a material of a product, is supplied. A locating ring 5 is provided which serves as a guide for mounting the fixed side plate 1 surrounding the injection hole on a fixed side of a molding machine (not shown).

The fixed side plate 1 is provided with a first mold plate 7. One side of the first die 7 is provided with a first core 7 ′ corresponding to a part of the outer surface of the product M made from the mold assembly. On the movable side plate 2 side, the second mold plate 9 is provided detachably on one surface of the first mold plate 7. The second template 9 is provided with a second core 9 'for forming one product M in cooperation with the first core 7'.

The movable side plate 2 is provided with a spacer block 13. At least two spacer blocks 13 are provided to form a space 14 between the movable side plate 2 and the second mold plate 9.

In the space 14, a wheat plate 15 provided to face one surface of the movable side plate 2 is installed to be movable. The plate 15 is to allow the product (M) made by operating the eject pin 19 to be described below to be separated from the second core (9 ').

The plate 15 is provided with a plurality of eject pins (19). The eject pin 19 penetrates through the second template 9, and its tip contacts the insert core 20 in the second core 9 ′ provided in the second template 9. A through portion (not shown) is drilled in the movable side plate 2 to penetrate the structure for driving the mill plate 15.

The second template 9 is provided with an entry port 21 in communication with the cooling passage 23 to be described below. Cooling fluid for cooling the product (M) and the core (7 ', 9') is moved to the entry and exit port (21). As the cooling fluid, cooling water or air may be used as necessary.

A plurality of cooling passages 23 are formed in the entry and exit ports 21. The cooling passage 23 is formed at a predetermined height in the direction of the second core 9 '. The cooling passage 23 allows the cooling fluid to flow close to the molding part, thereby cooling the product M more efficiently.

The cooling passage 23 is coupled to the lifting guide 25 for blocking the entry and exit port 21 and the cooling passage 23. The lifting guide 25 is formed in a plate shape having a predetermined thickness, the width is formed larger than the width of the cooling passage (23). This is to allow the elevating guide 25 to be pressed into the cooling passage (23). The lifting guide 25 serves to allow the cooling fluid to rise in a direction close to the product through the cooling passage 23.

The bottom of the second core (9 ') is provided so that the seal 27 is protruded at a position separated by a predetermined distance from both edges of the entry port (21). The seal 27 is inserted into an airtight groove (not shown) formed by being recessed in the second template 9 to prevent the cooling fluid from leaking from the entry and exit port 21.

In the mold assembly according to the prior art having such a configuration, the synthetic resin is introduced into the molding portion through an injection hole (not shown). In order to solidify the synthetic resin introduced, the cooling fluid moves along the inlet / outlet port 21 and absorbs heat around the product (M).

However, the prior art as described above has the following problems.

The entry port 21 is formed by processing the second template 9. That is, the entry and exit port 21 is processed along the longitudinal direction of the second mold 9 using a tool.

However, since the entry and exit port 21 must be processed to penetrate along the inside of the second mold 9 which is not exposed to the outside, the processing becomes difficult.

In particular, when the shape of the product (M) is complicated to provide a plurality of mill pins 19 for taking out the product (M), the entry port 21 should be formed so as not to interfere with the mill pin (19). Therefore, the processing of the entry and exit port 21 becomes more difficult.

In order to solve this problem, the periphery of the second core 9 'may be divided into a plurality of sections, and the entry / exit port 21 may be processed in each section. However, in this case, there is a problem that the number of processing for forming the entry and exit port 21 increases, and the structure of the mold assembly becomes complicated.

In addition, since the cooling fluid flows into the inlet / outlet port 21 and the cooling flow path 23, the airtightness of the cooling fluid is important. To this end, a separate object such as the seal 27 may be provided, but the mold assembly may be aged due to repeated use, or the entry / exit port 21 or the cooling flow path 23 may be corroded. 9) There is a problem that the whole must be replaced.

In addition, when the entry port 21 is clogged by foreign matters or the like during operation of the mold assembly, it is very troublesome to remove it. Because the second mold 9 is relatively large in size and very large in weight, it is not easy to separate the mold from the mold assembly and remove the foreign matter.

An object of the present invention is to solve the problems of the prior art as described above, to provide a mold assembly capable of easily processing a cooling passage which is a moving path of a cooling fluid for cooling a product and a core for molding the same. .

Another object of the present invention is to prevent leakage of the cooling fluid.

Still another object of the present invention is to provide a mold assembly which is easy to maintain in a cooling passage.

According to a feature of the present invention for achieving the above object, the present invention is installed on the fixed side plate of the molding machine, the first mold plate having a first core having a shape corresponding to the shape of the product on one surface, and the molding machine A second mold, which is installed on the movable side plate of the second mold and which is in close contact with the first mold and which cooperates with the first core to create a space corresponding to the shape of the product, and the first mold or the second plate. At least one of the templates is inserted to be detachably inserted into a seating channel formed to be recessed around the periphery of the first core or the second core, and exchanges heat with the periphery while the cooling fluid moves through the interior. It comprises a cooling tube.

The cooling tube is connected to the outside through an outer surface of at least one of the first plate or the second plate and the inlet portion through which the cooling fluid flows, and the periphery of the first core or the second core connected to the inlet portion. And a cooling unit inserted into the seating channel, and a discharge unit connected to the cooling unit and connected to the outside through at least one of the first plate and the second plate to discharge the cooling fluid.

At least one of the first plate and the second plate on which the seating channel is formed is provided with a fixing piece to shield at least a portion of the seating channel to fix the cooling tube.

At least two cooling tubes are stacked on the seating channel.

Spacers are provided between the stacked plurality of cooling tubes to maintain a predetermined gap.

In the present invention, instead of directly processing a cooling channel for cooling the mold assembly to the first or second mold plate, a separate cooling tube is inserted into a seating channel formed in the first or second mold plate so that the cooling fluid flows. Regardless of the internal structure, the cooling flow path can be easily processed, thereby improving workability.

In the present invention, since the cooling fluid flows through a separate cooling tube, the cooling flow path formed in the mold assembly itself is leaked, thereby preventing the mold assembly from being damaged or affecting the molding process.

In addition, in the present invention, since only the cooling tube needs to be replaced when the cooling flow path is blocked or aged, the maintenance of the mold assembly may be simplified.

Hereinafter, a preferred embodiment of a cooling apparatus for a mold assembly according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view showing the configuration of a mold assembly to which a preferred embodiment of the apparatus for cooling a mold assembly according to the present invention is applied, and FIG. 3 shows a structure of a second mold and a cooling tube coupled thereto according to an embodiment of the present invention. A perspective view is shown, and in FIG. 4, a configuration of a cooling tube constituting an embodiment of the present invention is shown in a perspective view.

As shown in these figures, the stationary side plate 10 is provided on the stationary side of the mold assembly. The fixed side plate 10 is provided with a locating ring 12 for mounting the fixed side plate 10 to the fixed side of the molding machine (not shown). The first mold plate 15 is installed on the fixed side plate 10. The first mold 15 is formed with a sprue 18 for injecting material into the cavity C, which will be described later.

The first template 15 is provided with a first core 20. The first core 20 has a shape corresponding to a portion of the product P. The cavity C is a kind of space corresponding to the shape of the product P in cooperation with the second core 40 to be described later. ). In the present embodiment, the first core 20 is integrally formed with the first template 15, but may be separate from the first template 15.

The movable side plate 30 is provided on the movable side of the mold assembly. The movable side plate 30 is a portion that moves relative to the fixed side plate 10 by a separate driving source. Detailed description thereof will be omitted.

A space block 32 is installed on the movable side plate 30, and a moving space is formed between the spacer blocks 32. The plate 33 moves in the moving space to move a mil pin (not shown) connected thereto in the direction of the product P.

The spacer block 32 is provided with a second mold plate 35. The second plate 35 is installed to face the first plate 15 and is contacted or separated while relatively moving with each other. The second template 35 is provided with a second core 40. The second core 40 has a shape corresponding to a portion of the product P, and the cavity C is a kind of space corresponding to the shape of the product P in cooperation with the first core 20. Will form. In the present embodiment, the second core 40 is formed integrally with the second template 35, but may be separate from the second template 35.

The mounting channel 42 is recessed in the second mold 35. As shown in FIG. 3, the seating channel 42 is formed by recessing an upper surface of the second plate 35 facing the first plate 15 to surround the second core 40. . The seating channel 42 is inserted with a cooling tube 50 to be described below.

In this case, an opening 43 is formed at a side surface of the second mold 35. The opening 43 is a portion for communicating with the seating channel 42 and the outside, and is formed to open to the side of the second mold plate 35 as shown.

The opening 43 is again composed of first and second openings 43a and 43b. The first opening 43a is a portion into which the inlet portion 50a of the cooling tube 50 to be described below is inserted, and the second opening portion 43b is a discharge portion 50c of the cooling tube 50 inserted therein. Part. In the present embodiment, the first and second openings 43a and 43b are opened through the same surface of the second template 35 at a predetermined distance, but are not necessarily limited thereto. That is, the first opening 43a and the second opening 43b may be in communication with the outside through different surfaces of the second template 35.

A fixing piece 45 of the seating channel 42 is provided. The fixing piece 45 is installed across the seating channel 42 to shield at least a portion of the seating channel 42. Through this, the fixing piece 45 may prevent the cooling tube 50 from being separated from the seating channel 42.

The cooling channel 50 is inserted into the seating channel 42. The cooling tube 50 is a cooling flow path is formed therein, preferably, it is preferably formed of a metal material having a good thermal conductivity. The cooling tube 50 serves to cool the second core 40 and the product P through heat exchange with a peripheral part by cooling fluid flowing therein.

At this time, the cooling pipe 50 is installed to be detachable to the seating channel 42. That is, the cooling tube 50 is a separate object from the second plate 35, and is capable of being mounted and separated from the seating channel 42.

As shown in Figure 4, the cooling pipe 50 is formed with an inlet (50a). The inlet 50a is a portion into which the cooling fluid flows and is seated in the first opening 43a of the seating channel 42. That is, the inlet part 50a communicates with the outside and receives the cooling fluid in a cooled state from the outside to supply it to the cooling part 50b to be described later.

The cooling unit 50b is connected to the tip of the inlet 50a. The cooling unit 50b is a portion that is seated in the seating channel 42 to substantially exchange heat with the peripheral portion, one end of which is connected to the inlet 50a, and the other end of which is connected to the outlet 50c to be described later. do.

A discharge part 50c is connected to the cooling part 50b. The discharge part 50c is a part from which the cooling fluid after the cooling is discharged and is seated in the second opening 43b of the seating channel 42. That is, the discharge part (50c) is in communication with the outside serves to discharge the cooling fluid after the heat exchange with the peripheral portion to the outside.

At this time, as shown in Figure 4, the cooling tube 50 may be inserted into the seating channel 42 so that the two are stacked. This is to more efficiently cool the second core 40 and the product P through the cooling tube 50. A spacer (not shown) is inserted between the two cooling tubes 50 to space the two cooling tubes 50 from each other. Reference numerals 52 and 53 denote the ends of the supply pipe and the discharge pipe respectively connected to the outside.

Hereinafter, the operation of the cooling apparatus of the mold assembly according to the present invention will be described.

First, in a state in which the first and second molds 15 and 35 are in contact with each other and the cavity C is formed, a material is introduced into a molten state into the cavity C. In this state, the cooling fluid flows through the cooling pipe 50.

More precisely, the cooling fluid flows from the outside through the inlet 50a and moves to the cooling unit 50b. The cooling fluid moved to the cooling unit 50b lowers the temperature of the second core 40 and the product P through heat exchange with the second core 40 and the product P, and the temperature of the cooling fluid increases. Done. The cooling fluid in this state is discharged to the outside through the discharge unit (50c).

In addition, the cooling fluid of the externally cooled state is introduced through the inlet part 50a to cool the product P and the second core 40. Such a series of processes are performed continuously, enabling efficient cooling.

At this time, the cooling tube 50 is fixed to the seating channel 42 in a detachable state. That is, the cooling pipe 50 is prevented from being separated from the seating channel 42 by the fixing piece 45 which shields a part of the seating channel 42.

If the cooling tube 50 is old or damaged, the operator may remove the fixing piece 45 and separate the cooling tube 50 from the seating channel 42 and replace it with a new cooling tube 50. . In this case, the operator can easily separate the cooling pipe 50 through the open side of the seating channel 42 formed in the second mold plate 35.

The seating channel 42 is not designed to be a kind of port that penetrates the second plate 35, but is formed to partially open through the upper surface of the second plate 35. Accordingly, the seating channel 42 may be easily processed to avoid interference with other structures such as a mill pin or a dowel pin installed through the second template 35.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

For example, the seating channel 42 may be formed in the first template 15 instead of the second template 35. Of course, the seating channel 42 may be formed on the surfaces of the first and second mold plates 15 and 35 that face each other.

1 is a cross-sectional view showing the configuration of a mold assembly to which a cooling apparatus according to the prior art is applied.

Figure 2 is a cross-sectional view showing the configuration of a mold assembly to which a preferred embodiment of the cooling apparatus for a mold assembly according to the present invention is applied.

Figure 3 is a perspective view showing the configuration of the second template and the cooling tube coupled thereto constituting an embodiment of the present invention.

Figure 4 is a perspective view showing the configuration of the cooling tube of the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: fixed side plate 12: locating ring

15: first template 18: sprue

20: first core 30: movable side plate

35: second edition 40: second core

42: seating channel 42a, 42b: opening

45: fixed piece 50: cooling tube

50a: inlet 50b: cooling unit

50c: outlet

Claims

A first mold plate provided on the fixed side plate of the molding machine and having a first core having a shape corresponding to the shape of the product on one surface thereof;

A second mold plate provided on the movable side plate of the molding machine and having a second core selectively contacting the first mold plate and cooperating with the first core to create a space corresponding to the shape of the product;

At least one of the first plate and the second plate is inserted into a seating channel formed to be recessed around the periphery of the first core or the second core and is detachably inserted into the cooling channel. Cooling device of the mold assembly, characterized in that it comprises a cooling tube for heat exchange with the peripheral portion.

The method of claim 1, wherein the cooling tube

An inlet part connected to the outside through an outer surface of at least one of the first plate and the second plate to introduce a cooling fluid;

A cooling part connected to the inlet part and inserted into the seating channel around the first core or the second core;

And a discharge unit connected to the cooling unit and connected to the outside through at least one of the first plate and the second plate to discharge the cooling fluid.

According to claim 2, At least one of the first plate or the second plate in which the seating channel is formed on the surface facing each other is provided with a fixing piece to shield at least a portion of the seating channel is characterized in that the cooling tube is fixed Cooling device of mold assembly.

The apparatus of any one of claims 1 to 3, wherein at least two cooling tubes are stacked on the seating channel.

The apparatus of claim 4, wherein a spacer is provided between the stacked plurality of cooling tubes to maintain a predetermined gap.