JP3069299U - Cooling pipe for mold - Google Patents

Abstract

(57) [Problem] To provide a cooling pipe for a mold capable of reducing the number of parts and the number of processing steps and reducing the manufacturing cost. SOLUTION: An inner pipe 2 is concentrically arranged in an outer pipe 1 to form a forward path 3 and a return path 4 of cooling water, and a hose connection base 5 communicating with the forward path and the return path is provided at one end side. In the mold cooling pipe, a water outlet connection base 5b communicating with the inside of the outer pipe serving as a return path of the cooling water is fixedly attached to the outer pipe 1, and an inlet connection base 5a communicating with the inside of the inner pipe serving as the outward path of the cooling water is connected. Assembled so as to be rotatable in the circumferential direction with respect to the outer pipe.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cooling pipe for a die, which is mounted in a cooling hole of a die used for die casting or injection molding, and cools the die.In particular, the inner pipe is concentric with the outer pipe. The present invention relates to a cooling pipe for a mold, wherein the cooling water pipe is provided with a hose connection mouth for communicating with the outward path and the return path at one end.

[0002]

[Prior art]

 Normally, in this type of mold cooling pipe, the hose connection mouth leading to the outward and return paths is fixedly attached to the outer pipe or the inner pipe. There was something difficult. Therefore, in order to increase the degree of freedom in the connection direction of the hose, it has been proposed that the inlet connection port and the outflow connection port of the hose connection base are independently assembled so as to be rotatable in the circumferential direction. There was a problem that the structure was complicated and the cost increased.

[0003]

[Problems to be solved by the invention]

 The present invention has been made in view of such a situation, and in order to increase the degree of freedom in the connection direction of the hose, the inlet connection port and the outlet connection port of the hose connection base can be independently rotated in the circumferential direction. It is not always necessary to configure the water supply port or the water connection port so that only one of the water inlet port and the water outlet port is rotatable in the circumferential direction.This simplifies the structure, reduces the number of parts and processing steps, and reduces manufacturing costs. It is an object of the present invention to provide a mold cooling pipe capable of reducing the number of molds.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the cooling pipe for a mold according to the present invention has an inner pipe disposed concentrically inside an outer pipe to form a forward path and a return path of the cooling water, and has one end passing through the outward path and the return path. In the mold cooling pipe provided with a hose connecting base, the hose connecting base is connected to an inlet connecting base communicating with the inside of the inner pipe which is a forward path of the cooling water and the outer pipe which is a returning path of the cooling water. A water outlet connection base communicating with the inside, the water connection base is fixedly attached to the outer pipe, and the water inlet connection base is rotatably mounted in a circumferential direction. is there.

[0005]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the illustrated embodiment.

The mold cooling pipe A according to the present invention basically comprises an inner pipe 2 disposed concentrically inside an outer pipe 1 to form a forward path 3 and a return path 4 of cooling water. One end of the outer pipe 1 and the inner pipe 2 is provided with a hose connection base 5 connected to the outward path 3 and the return path 4, and a cooling hole drilled from the back side of the mold B toward the cavity. 6, a packing 7 is provided on the outer periphery of the distal end of the outer pipe 1 so that the cooling water does not leak from the cooling hole 6, and the packing 7 is not accidentally pulled out of the cooling hole 6 by the pressure of the cooling water. As described above, if necessary, it is fixed by the holding plate 8 provided on the back side of the mold B.

Usually, in this type of mold cooling pipe A, the inner pipe 2 is arranged as shown in the illustrated embodiment in consideration of the efficient flow (behavior) of cooling water in the cooling hole 6 of the mold B. The inner pipe 2 is formed to be slightly longer than the outer pipe 1, and the inside of the inner pipe 2 is used as a forward path 3 for cooling water, and the space between the outer pipe 1 and the inner pipe 2 is used as a return path 4 for cooling water.

The hose connection base 5 has an inlet connection base 5 a communicating with the inside of the inner pipe 2 serving as the outward path 3 of the cooling water, and the inside of the outer pipe 1 serving as the return path 4 of the cooling water (correctly, the outer periphery of the inner pipe 2). And an inner periphery of the outer pipe 1). A water inlet connection base 5b is connected to one end of the outer pipe 1 so as to be rotatable in a circumferential direction. The outflow connection base 5b is fixedly attached to one end of the outer pipe 1.

[0009] Various mechanisms are conceivable for rotatably attaching the water inlet connection base 5a to one end of the outer pipe 1 and fixing the water connection base 5b in a fixed manner. The water outlet connection base 5b is welded to one end of the base plate, and the water inlet connection base 5a is assembled to the water connection base 5b so as to be rotatable in the circumferential direction.

[0010] That is, the water discharge connection base 5b according to the present embodiment is formed in a substantially hexagonal nut shape on one end side 51b and in a closed cylindrical shape with a smaller diameter than the one end side 51b on the other end side 52b. One end of the inner pipe 2 is coaxially fitted to and integrated with the peripheral surface, and one end of the outer pipe 1 is welded to the open side of the other end 52b, so that the inside of the outer pipe 1 (the outer periphery of the inner pipe 2) A cooling water outlet 53 is formed on one end 51b communicating with the inner pipe 2) and a cooling water inlet 54 is formed on the other end 52b communicating with the inside of the inner pipe 2. Two o-rings 55 are arranged on the outer periphery of the end side 52b so as to surround (sandwich) the cooling water inlet 54.

On the other hand, the water inlet connection base 5a is formed in a short and substantially cylindrical shape having an inner diameter that is in close contact with an o-ring 55 provided on the outer periphery of the other end 52b of the water connection base 5b. A cooling water inlet 56 communicating with a cooling water inlet 54 formed on the end side 52b is formed to have an opening. The cooling water formed on the outer peripheral position of the other end 52b of the water discharge connection base 5b, specifically, the other end 52b. By being rotatably fitted to the outer peripheral position covering the inlet 54 and being held so as not to fall off by a separable fastening ring 9 screwed to the outer periphery of the other end 52b of the water discharge connection base 5b, the water discharge connection base is provided. 5b so as to be rotatable in the circumferential direction.

Reference numeral 10 in the drawing is a spring pin for holding the fastening ring 9 so that it does not fall off carelessly. The spring pin is provided in the engagement hole 11 formed in the fastening ring 9 and the water outlet connection base 5a. It is detachably mounted in a penetrating manner over the formed engaging hole 12.

When the mold cooling pipe A is mounted in the cooling hole 6 of the mold B, a ring-shaped packing 7 is attached to the outer periphery of the other end of the outer pipe 1 as shown in the illustrated embodiment. Either press it into the cooling hole 6 of the mold B, or install it by screwing it into the cooling hole 6 of the mold B by engraving a male screw on the outer circumference of the outer pipe 1, and finally, install the water inlet connection base 5a. A hose (not shown) is connected to each of the cooling water inlet 56 and the cooling water outlet 53 of the water outlet connection base 5b.

Thus, the cooling water supplied from the water inlet connection base 5 a through the hose passes through the inside of the inner pipe 2, that is, the cooling water outward path 3, and is heat-exchanged in the cooling hole 6 of the mold B, so that the heat of the mold is Then, the water is discharged to the outside through the water outlet connection base 5b through the hose through the cooling water return path 4 formed between the outer pipe 1 and the inner pipe 2.

[0015]

[Effect of the invention]

 In the cooling pipe for a mold according to the present invention, the inner pipe is arranged concentrically in the outer pipe to form the outward path and the return path of the cooling water, and the hose connection leading to the outward path and the return path at one end is provided. In a mold cooling pipe provided with a base, a water outlet connection to the inside of the outer pipe, which is the return path of the cooling water, is fixedly attached to the outer pipe, and an inlet connection to the inside of the inner pipe, which is the outward path of the cooling water. Since the base is attached to the outer pipe so as to be rotatable in the circumferential direction, the number of parts and the number of processing steps are reduced as compared to the case where the inlet and outlet connection bases are rotatably mounted in the circumferential direction. As a result, manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which the present invention is mounted on a cooling hole of a mold according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of the present invention.

[Explanation of symbols]

A: Mold cooling pipe B: Mold 1: Outer pipe 2: Inner pipe 3: Cooling water outward path 4: Cooling water return path 5: Hose connection base 6: Cooling hole 5a: Water inlet connection base 5b: Outflow connection base

Claims (1)

[Utility model registration claims] 1. A mold cooling system comprising: an inner pipe disposed concentrically within an outer pipe to form a forward path and a return path of cooling water; and a hose connection base communicating with the forward path and the return path at one end. In the pipe, the hose connection mouth is formed by an inlet connection mouth leading to the inside of the inner pipe serving as a forward path of the cooling water and an outlet connection mouth leading to the inside of the outer pipe serving as a return path of the cooling water. A cooling pipe for a mold, wherein a base is fixedly mounted on the outer pipe, and the water inlet connection base is rotatably mounted in a circumferential direction.