JPH0871722A - Cooling structure in metallic mold - Google Patents

Abstract

PURPOSE: To effectively cool the necessary part of a metallic mold by easily working cooling holes of cooling water passage hole, etc., without lowering the strength of the metallic mold. CONSTITUTION: A communicating groove 10 communicating with plural cooling water passage holes 8 is arranged at a cooling water pouring part side in the metallic mold 1 opening plural cooling water passage holes 8 and partition materials 11 partitioning into water passage communicating pouring groove 12 sides and a water passage communicating draining groove 13 sides are arranged in the communicating groove 10 part of cooling water passage pipes 15 inserted into the cooling water passage holes 8. Then, the cooling water passage holes 8 for pouring the cooling water are opened in the metallic mold 1 so as to communicate with the water passage communicating pouring groove 12 parts of the cooling water passage pipes 15 of the communicating groove 10. Further, the cooling water draining hole 16 for draining the cooling water is opened in the metallic mold 1 so as to communicate with the water passage communicating draining groove 13 sides in the communicating groove 10 partitioned with the partition materials 11, and the metallic mold 1 is effectively cool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold cooling structure, and in particular, it is possible to easily process a cooling water passage hole and cool a necessary part of the mold without lowering the strength of the mold. The present invention relates to a mold cooling structure.

[0002]

2. Description of the Related Art It has been widely known that a high temperature resin material or a molten metal material is filled into a cavity of a mold for molding. Open a cooling water passage with a specified diameter in the part that requires cooling,
Insert a small-diameter cooling water passage pipe into this cooling water passage hole,
It is known that cooling water is injected into a cooling water passage pipe so that the cooling water can reach the tip of the cooling water passage hole.

[0003]

The cooling structure for the mold described above requires cooling of the mold because the cooling water passage holes can be appropriately opened in the mold when the product has a simple shape. Can be cooled as desired.

However, when the product has a complicated shape and a large number of cooling water passage holes are required in the die, it becomes difficult to form the cooling water passage holes in the die, and the die strength is increased. Problems such as deterioration occur, and a mold cooling structure that can solve these problems is required.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in order to solve the above-mentioned problems, cooling water passage holes are respectively provided in portions where cooling of a mold is required. Open the holes, insert the cooling water passage pipes into the cooling water passage holes, inject the cooling water into the cooling water passage pipes, discharge the cooling water through the cooling water passage holes, and mold. In the mold structure designed to cool the cooling water, a communication groove communicating with the plurality of cooling water water holes is provided on the cooling water injection part side of the mold in which the plurality of cooling water water holes are opened. A cooling water injection hole for injecting cooling water is provided in the above-mentioned communication groove portion of the cooling water passage pipe to be inserted into the water passage hole, by disposing a partition member for partitioning the water passage injection groove side and the water passage discharge groove side. A hole is formed in the mold or the lid of the mold so as to communicate with the water communication injection groove of the cooling water water pipe of the communication groove. To provide a cooling structure for a mold, characterized in that a hole is formed in the mold so that a cooling water discharge hole for discharging cooling water is communicated with a cooling water discharge groove side of a communication groove partitioned by the partition member. is there.

[0006]

In the present invention, a communication groove communicating with the plurality of cooling water passage holes is provided on the side of the cooling water injection portion of the mold having the plurality of cooling water passage holes, and the cooling water passage is provided. By arranging a partition member for partitioning the water communication communication injection groove side and the water communication communication discharge groove side in the communication groove portion of the cooling water water passage pipe to be inserted into the water passage hole, a plurality of holes opened in the mold are provided. The cooling water passage can be connected by a communication groove, and the communication groove of the cooling water passage can be divided into a cooling water passage side and a discharge side by a partition member.

The cooling water injection hole for injecting the cooling water is opened in the mold or the lid of the mold so as to communicate with the water communication injection groove part of the cooling water flow pipe of the communication groove. By opening the mold so that the cooling water discharge hole that discharges the cooling water is connected to the cooling water discharge groove side of the communication groove that is partitioned by the partition material, the cooling water is injected from the cooling water injection hole and the connection is established. Water can be passed through a plurality of cooling water passage pipes through the water passage injection groove that divides the groove, and the cooling water discharge hole can be obtained through the water passage discharge groove that divides the communication groove through the cooling water passage hole. The cooling water can be discharged from the mold to effectively cool the necessary part of the mold.

Further, in order to easily open the cooling water passage hole in the mold, the upper mold or the lower mold is divided and joined at a predetermined position, and the divided upper mold or the lower mold is joined. The cooling water passage hole of the mold is provided with a communication groove at the joint, which communicates with the plurality of cooling water passage holes, and the communication groove portion is divided into the water communication passage for injection groove side and the water communication passage for discharge groove side. Even if the product has a complicated shape and a large number of cooling water passage holes are required by arranging the partitioning material, it can be properly applied to the mold without lowering the strength of the mold. The cooling water passage hole can be opened to effectively cool the required part of the mold.

[0009]

EXAMPLES The present invention will be described below based on examples. FIG. 1 and subsequent figures show one embodiment of the present invention.
A mold 1 for molding a compact having a complicated shape such as a wheel of an automobile has an upper mold 3 and a lower mold for forming a required cavity 2 for the wheel as shown in FIG. 4 are opposed to each other in the vertical direction and side molds 5 are provided, and these molds are mounted on a required holder and can be opened and closed so that a molded body can be molded.

The upper mold 3 is divided into a central side and a peripheral side as shown in FIG. 1, and cooling water is passed through the divided central side mold 6 and peripheral side mold 7. In order to facilitate the opening of the hole 8, the upper die 9 is further divided into upper and lower parts as shown in FIG.

In the divided center side mold 6 and peripheral side mold 7 of the upper mold 3, as shown in FIGS. 1 and 2, a cooling water passage hole 8 is formed in an axially symmetrical shape in a portion requiring cooling. It has a hole in
An annular communication groove 10 is vertically cut so that the cooling water passage holes 8 opened in axial symmetry and the like are communicated with the joint portion side of the cooling water passage holes 8 with the upper die 9. The area is changed and drilled.

Then, the communication groove 10 of the cooling water passage hole 8 is formed.
As shown in FIGS. 1 to 3, an annular partition member 11 is watertightly attached to the portion to partition the communication groove 10 into a water communication communication injection groove 12 side and a water communication communication discharge groove 13 side.

Further, an injection hole 14 is opened in the center of the partition member 11 in the cooling water water passage hole 8, and a cooling water water pipe 15 is attached to the partition member 11 so as to communicate with the injection hole 14. It is inserted in each of the cooling water passage holes 8.

In the water communication discharge groove 13 on the lower side of the partition member 11 which partitions the communication groove 10 in this way, a cooling water discharge hole opened in the peripheral die 7 as shown in FIGS. 1 to 3. 16 (which may be plural), and an intermediate discharge hole 17 is opened in the center side mold 6 to connect the cooling water discharge hole 16 and the water communication discharge groove 13 of the center side mold 6. The cooling water can be discharged through communication.

The center side mold 6 and the peripheral side mold 7 are also provided.
1, the upper die 9 is joined to the upper surface of
As shown in FIG. 3, the water communication injection groove 12 is provided so as to face the above-described annular communication groove 10.

Further, as shown in FIGS. 1 and 3, cooling water injection holes 18 (a plurality of holes can be provided) are provided in the peripheral side mold 7 so that the cooling water can be injected into the annular water communication injection groove 12. And an intermediate water passage hole 19 is opened in the upper die 9 to communicate with the cooling water injection hole 18 and the water passage injection groove 12 so that cooling water can be injected.

The joint between the center side mold 6, the peripheral side mold 7 and the upper side mold 9 is appropriately watertightly sealed so that the cooling water is used for the cavity 2 and the molding material. It is designed so as not to leak into the inlet 20.

Also in the lower die 4, as shown in FIG. 1, the cooling water passage holes 8 are opened to predetermined depths, and the cooling water passage pipes 15 are provided in the cooling water passage holes 8. Each one is inserted and cooled.

As shown in the figure, a plurality of cooling water passages are provided on the lower die 4 at the lower end of the cooling water passage hole 8 at the joint side with the lid 21 as in the case of the upper die 3 side. An annular communication groove 10 communicating with the water hole 8 is opened, a partition member 11 is attached to the communication groove 10, and a water communication communication injection groove 12 side and a water communication communication discharge groove 13 are provided.
It is separated from the side.

The water communication / injection groove 12 has an annular opening facing the communication groove 10 on the lid 21 side, and has a cooling water water passage hole 18 and a cooling water discharge hole 16 in the lid body 21. The water communication passage injection groove 12 and the water communication passage discharge groove 13 described above are opened.
The lower die 4 can be cooled by communicating with each other.

The upper mold 3 and the lower mold 4 described above are
The temperature sensor-insertion hole 22 is opened at each appropriate position and the temperature sensor-23 is inserted to detect the mold temperature and control the flow rate of the cooling water. 24 is a punching pin and 25 is a knockout pin.

As described above, the cooling water passage is communicated with the annular communication groove, the communication groove is partitioned with the partition material, and the cooling water is injected through the annular water communication injection groove partitioned with the partition material.
Since the cooling water can be discharged through the annular water communication discharge groove, the number of cooling water injection holes and cooling water discharge holes may be small, and processing of cooling holes such as cooling water injection hole and cooling water discharge hole is possible. Can be simplified, and the problem of reduction in strength of the mold can be solved.

Further, like the above-mentioned upper mold, the mold is divided and joined at appropriate positions, and the joint is provided with a communication groove for communicating cooling water passage holes to partition and inject cooling water. Therefore, even if the product has a complicated shape and a large number of cooling water passage holes are required, the die can be appropriately discharged to the die without lowering its strength. The cooling water passage hole can be opened, and the mold can be cooled.

Further, the mold is divided into a central part and a peripheral part side, a lower part and an upper part part, and the like, so that various kinds and various types of products can be dealt with only by exchanging a part of the mold. The mold parts can be used in common, and the cost of the mold can be reduced.

It is needless to say that the lower mold can also have the cooling structure as described above, or can be appropriately divided to have a cooling structure like the upper mold.

Further, in the embodiment, the communication groove has an annular shape which is easy to process, but it may have a polygonal shape or a groove which connects the cooling water water passage holes with a line. Do not separately open the upper mold and lid side, rather thin the seal material portion to form the water-communication injection groove portion, etc. appropriately modified within the scope of the present invention Is what you can do.

As the mold, a mold of a molten metal such as aluminum, a mold of a heating material such as a plastic material or a composite resin material, and a mold requiring cooling using a high temperature molding material. Is applicable.

[0028]

As described above, according to the present invention, a plurality of cooling water passage holes formed in the mold are connected by the communication groove, and the communication groove portion is made to pass the cooling water by the partition member. It can be divided into a discharge side and a discharge side. Then, cooling water can be injected from the cooling water injection hole, and water can be passed through the water communication injection groove of the communication groove portion to a plurality of cooling water passage pipes, and the passage of the communication groove portion can be passed through the cooling water passage hole. The cooling water can be discharged from the cooling water discharge hole through the water communication discharge groove to effectively cool the required part of the mold.

Therefore, the number of cooling water injection holes and cooling water discharge holes may be small, and the machining positions and openings of the cooling water injection holes and the cooling water discharge holes are simplified and the die strength is lowered. The problem of can be solved.

Even when the product has a complicated shape and a large number of cooling water passage holes are required in the mold, the mold is divided at predetermined positions without lowering the strength of the mold. By doing so, the cooling water passage hole can be appropriately opened, and the mold can be effectively cooled.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold cooling structure in which an embodiment of the present invention is partially omitted,

FIG. 2 is a plan view showing a state in which an upper side mold of the upper mold has been removed,

FIG. 3 is an enlarged cross-sectional view of a communication groove portion of the above.

[Explanation of symbols]

1 ... Mold 2 ... Cavity
3 ... Upper mold 4 ... Lower mold 6 ... Central mold
7 ... Circumferential side mold 8 ... Cooling water passage hole 9 ... Upper side mold 1
0 ... Communication groove 11 ... Partition material 12 ... Water communication injection groove
13 ... Water communication discharge groove 15 ... Cooling water flow pipe 16 ... Cooling water discharge hole
18 ... Cooling water injection hole

Claims (4)

[Claims] 1. A cooling water passage hole is opened in a portion of the mold where cooling is required, a cooling water passage pipe is inserted into each of the cooling water passage holes, and the cooling water passage pipe is cooled. In a mold structure in which water is injected and cooling water is discharged through cooling water passage holes to cool the mold, cooling water for the mold in which the plurality of cooling water passage holes are opened. By providing a communication groove that communicates with the cooling water passages on the injection side,
A partitioning material is installed in the above-mentioned communication groove portion of the cooling water passage pipe to be inserted into this cooling water passage hole to divide it into the water passage inlet groove side and the water passage outlet groove side, and injects cooling water. A hole is opened in the mold or the lid of the mold so as to communicate with the water communication injection groove of the cooling water water pipe of the communication groove, and the water communication discharge groove of the communication groove partitioned by the partition material A cooling structure for a mold, characterized in that a hole is formed in the mold so as to communicate with a cooling water discharge hole for discharging cooling water to the side. 2. An upper die or a lower die is divided and joined at a predetermined position in order to facilitate opening of a cooling water passage hole in the die, and the divided upper die or lower die is joined. The cooling water passage hole of the mold is provided with a communication groove at the joint, which communicates with the plurality of cooling water passage holes, and the communication groove portion is divided into the water communication passage for injection groove side and the water communication passage for discharge groove side. The mold cooling structure according to claim 1, wherein a partition member is provided. 3. A communication groove is partitioned by a partitioning member to provide a water-communication injection groove and a water-communication discharge groove, and a cooling-water injection hole is communicated with the water-communication injection groove to provide cooling water to a cooling-water passage pipe. The mold cooling structure according to claim 1 or 2, wherein the cooling water discharge groove is formed so as to discharge the cooling water while the cooling water discharge groove is connected to the water communication discharge groove. 4. The mold cooling structure according to claim 1, wherein the communication groove is annularly provided in the mold.