JPH0513652U - Cooling structure of thin die - Google Patents

Abstract

(57) [Abstract] [Purpose] The object is to prevent the layout of the mold from being restricted by the cooling mechanism of the thin mold part in the mold and to improve the cooling efficiency. [Structure] A heat conductive material (12) for cooling a thin mold part (11) is cooled by cooling water in a cooling cylinder (13) on the mold body (15) side. The cooling cylinder (13) is composed of an inner cylinder (13A) into which the heat conducting material (12) is inserted and an outer cylinder (13B) communicating with the inner cylinder (13A) at the upper end, and the lower end is exposed. The inner cylinder (13A)
To the cooling water supply channel (16A) and the outer tube (13B) to the cooling water discharge channel (16A).
Contact B).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooling structure for a thin mold part in a mold used for casting, for example.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 3, in order to cool the thin mold part (1) such as the core pin and the insert part protruding from the mounting mold (5A) of the Holden block (5) which is the mold body, Insert a material with good thermal conductivity (heat transfer material (2)) such as a thermo pipe or copper rod from the Ruden block (5) side into the thin mold section (1), and insert it on the Holden block (5) side. Insert the heat conductive material (2) into the water cooling hole (3) with the stopper (4), and the water cooling hole (3) is located in the middle of the water conduction hole (6) that horizontally crosses the Holden block (5). The arrangement was adopted.

In the above structure, cooling water is made to flow through the water conduction hole (6) as shown by an arrow to supply and renew the cooling water to the water cooling hole (3) so that the heat conducting material (2) is removed. The holder block (5) side is cooled, and the thin mold part (1) is cooled by the heat conducting material (2).

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, since the water conduction hole (6) horizontally traverses the Holden block (5), there are many restrictions on the layout of the mold, and depending on the mold layout, the thin mold part It was impossible to provide a cooling mechanism, and it was not possible to cool only the heat conductive material (2), and there was a problem that the cooling efficiency of the thin mold part (1) was not sufficient.

[0005]

[Means for Solving the Problems]

 As a means for solving the above-mentioned conventional problems, the present invention inserts a heat conducting material (12) from a mold body (15) into a thin mold part (11), and at the mold body (15) side. Insert the heat conducting material (12) into the inner cylinder (13A) of the cooling cylinder (13) consisting of the inner cylinder (13A) and the outer cylinder (13B), and insert the inner cylinder (13A) and the outer cylinder (13B). ) With the cooling water supply passage (16A) in the inner cylinder (13A) and the cooling water discharge passage (16B) in the outer cylinder (13B) at the lower end. It provides a cooling structure for the thin mold part (11) directly connected from the outside of the (15).

[0005]

[Action]

 Cooling water is supplied from the cooling water supply passage (16A) into the inner cylinder (13A) at the lower end of the cooling cylinder (13). The cooling water rises in the inner cylinder (13A), flows into the outer cylinder (13) from the communication hole (13C) at the upper end, flows down in the outer cylinder (13B), and cools at the lower end. It is discharged from the discharge channel (16B).

In this way, the cooling water is supplied and renewed in the cooling cylinder (13), and the heat conducting material (12) inserted in the inner cylinder (13A) is cooled from the mold body (15) side. The heat conducting material (12) cools the thin mold part (11). Since the cooling water supply path (16A) and the discharge path (16B) of the cooling cylinder (13) are directly connected to the lower end of the cooling cylinder (13) from the outside of the mold body (15), The main body (15) does not contact and is not interfered with by the supply passage (16A) and the discharge passage (16B).

[0007]

【Example】

 The present invention will be described with reference to an embodiment shown in FIGS. 1 and 2. (15) is a Holden block which is a mold body, and the holding mold (15A) of the Holden block (15A) has a core pin, The thin mold part (11) such as a child part is projected, and the heat conductive material (12) such as a thermo pipe or a copper rod is inserted into the thin mold part (11) from the Holden block (15) side. The heat conducting material (12) is inserted into the inner cylinder (13A) of the cooling cylinder (13) including the inner cylinder (13A) and the outer cylinder (13B) on the Holden block (15) side.

The inner cylinder (13A) and the outer cylinder (13B) communicate with each other through a communication hole (13C) at the upper end, and the inner cylinder (13A) cools at the lower end through a connector (16C). The water supply passage (16A) communicates with the outer cylinder (13B), and the cooling water discharge passage (16B) communicates with the outer cylinder (13B) through the connector (16D). A cap (13E) having an O-ring (13D) is attached to the upper end of the cooling cylinder (13) to prevent the cooling water from leaking to the outside.

The lower end of the cooling cylinder (13) goes out into a groove (15B) formed from the lower surface of the holden block (15), and a mounting metal fitting (sealed with an O-ring (17A) ( The cooling water supply passage (16A) and the cooling water discharge passage (16B) are directly connected to the outside of the lower end of the cooling cylinder (13) from the outside of the Holden block (15). 13) so that the other parts of the Holden block (15) are not cooled by the cooling water supply passage (16A) and the cooling water discharge passage (16B), and the cooling cylinder (13) and the Holden block A small gap S is also provided between the block (15) and the holder block (15) around the cooling cylinder (13) so that it is not cooled as much as possible.

In the above structure, at the lower end of the cooling cylinder (13), cooling water is supplied from the cooling water supply passage (16A) into the inner cylinder (13A) as shown by the arrow in FIG. It rises in the inner cylinder (13A), flows into the outer cylinder (13B) from the communication hole (13C) at the upper end, flows down in the outer cylinder (13B), and is discharged from the discharge passage (16B) at the lower end. To be done. In this way, the cooling water is supplied to the cooling cylinder (13) and renewed, and the heat conducting material (12) inserted in the inner cylinder (13A) is cooled from the Holden block (15) side to The material (12) cools the thin mold part (11).

[0011]

[Effect of the device]

 Therefore, in the present invention, since the cooling water supply passage and the discharge passage are directly connected to the cooling tube from the outside of the die main body, only the heat conductive material can be cooled, the cooling efficiency is improved, and the other die No cooling is applied to the part. Since the mold body is not interfered with by the cooling water supply passage and the discharge passage, restrictions on the layout of the mold are eliminated.

[0012]

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is an enlarged side sectional view of a thin mold portion.

FIG. 3 is a side sectional view of a conventional example.

[Explanation of symbols]

 11 Thin mold part 12 Thermal conductive material 13 Cooling tube 13A Inner tube 13B Outer tube 13C Communication hole 15 Holden block 16A Cooling water supply path 16B Cooling water discharge path

Claims (1)

[Scope of utility model registration request] 1. A heat conductive material is inserted from a mold body into a thin mold part, and the heat conductive material is inserted into an inner cylinder of a cooling cylinder composed of an inner cylinder and an outer cylinder on the mold body side. The inner cylinder and the outer cylinder are interconnected at the upper end, and at the lower end, a cooling water supply passage is connected to the inner cylinder and a cooling water discharge passage is directly connected to the outer cylinder from the outside of the mold body. Cooling structure for thin die