JP2004154796A - Cooling pipe for metal die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling pipe for a metal die, which can reduce a manufacturing cost by reducing the number of components with a simple structure. <P>SOLUTION: A hose connecting mouth piece 7 has an inlet chamber 10 communicating with an inlet connecting port 4 and an outlet chamber 11 communicating with an outlet connecting port 6 so as to form a line on a longitudinal axis. An end portion of an outer pipe 1 is screwed into the inlet port 11a of the outlet chamber 11 to allow it to communicate with the outlet chamber. A abutting flange 14 is integrally formed at one opening end of an inner pipe 2. The abutting flange is brought into contact with a through hole 13 formed between the inlet chamber and the outlet chamber so as to cover the through hole 13. Also, a push ring 16 is fitted on one end side of the inner pipe so as to move in the axial direction. The abutting flange 14 is pressed against the mouth edge portion of the through hole 13 by pushing the push ring by means of one opening end 1a of the outer pipe by the screw motion. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cooling pipe for a mold for cooling a mold by being attached to a cooling hole of a mold used for die casting or injection molding, particularly, by arranging an inner pipe in an outer pipe. Forming a forward path and a return path of cooling water, and attaching a hose connection base having an inlet connection port leading to the forward path and an outlet connection port leading to the return path at one end of the outer pipe and the inner pipe. It relates to a cooling pipe.
[0002]
[Prior art]
As a technique close to the present invention, there is one disclosed in Patent Document 1. In this prior art, as shown in FIG. 3, a water inlet chamber b and a water outlet chamber c are formed side by side on an axis of a hose connection base a, and one end of an outer pipe d is screwed to the water outlet chamber c. At the same time, a locking flange f is fixedly attached to one end of the inner pipe e, the inner pipe e is inserted from the water inlet chamber b side to penetrate the water outlet chamber c, and the locking flange f is formed with a water opening g. The cooling water in the water inlet chamber b and the cooling water in the water outlet chamber c are not mixed by being pressed by the stopper lid j via the holding pipe h. Further, another conventional technique shown in FIG. 4 uses a pressing spring k instead of the holding tube h in FIG.
In these prior arts, not only must the locking flange f be fixed to the end of the inner pipe e on one end side by welding or brazing, but also a holding tube h or a pressing spring k and a stopper j are required. Due to its structure, there is a problem that the number of parts is increased and therefore the manufacturing cost is increased.
[0003]
[Disclosure of prior art documents]
[Patent Document 1]
Japanese Utility Model Publication No. 6-14926
[Problems to be solved by the invention]
The present invention has been made in view of such a conventional problem, and has been made to provide a mold cooling pipe capable of reducing the number of parts and reducing manufacturing costs with a simple structure. is there.
[0005]
[Means for Solving the Problems]
The mold cooling pipe of the present invention that achieves the above object is configured such that an inner pipe is arranged in an outer pipe to form a forward path and a return path of cooling water, and the outer path is formed at one end of the outer pipe and the inner pipe. In a cooling pipe for a mold, which is provided with a hose connection base provided with a water inlet connection port leading to a water return port and a water return connection port leading to a return path, the hose connection base is connected to the water inlet chamber communicating with the water inlet connection port and the water discharge connection. A water discharge chamber communicating with a mouth is formed side by side on a longitudinal axis, and one end of the outer pipe is screwed into an inlet of the water discharge chamber to communicate the outer pipe with the water discharge chamber, and one end of the inner pipe. At the open end, a contact flange is formed in the same body, and the corresponding contact flange is brought into contact so as to cover a through hole formed between the water inlet chamber and the water discharge chamber, and one end of the inner pipe. Pressing ring can be moved in the axial direction It is configured such that the abutting flange is pressed against the edge of the through hole by screwing the pressing ring on one end opening end of the outer pipe. It is.
In this case, it is preferable that the contact flange is formed in a substantially trumpet shape that exerts a spring property in the axial direction of the inner pipe.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
The mold cooling pipe A according to the present invention is provided at one end of the outer pipe 1 and the inner pipe 2 arranged concentrically, with an inlet connection port 4 leading to a cooling water outward path 3 and an outlet connection leading to a cooling water return path 5. A hose connection mouthpiece 7 having a mouth 6 is integrally attached. Then, a holding plate 9 provided on the back side of the mold B so as to be detachably inserted and mounted in a cooling hole 8 drilled from the back side of the mold B toward the cavity so as not to come out of the cooling hole 8. It is fixed with it.
In this type of mold cooling pipe A, the inner pipe 2 is usually formed to be longer than the outer pipe 1, the inside of the inner pipe 2 is used as a cooling water forward path 3, and the space between the outer pipe 1 and the inner pipe 2 is used for cooling water. Return route 5 is assumed.
[0007]
The hose connection base 7 uses a substantially cylindrical or polygonal column-shaped metal block material having an appropriate length, and connects the water inlet connection port 4 leading to the cooling water outward path 3 and the water outlet connection port 6 leading to the cooling water return path 5. Each is formed in a direction orthogonal to the longitudinal axis direction, and a water inlet chamber 10 communicating with the water inlet port 4 and a water outlet chamber 11 communicating with the water outlet port 6 are formed side by side on the longitudinal axis. Therefore, when the outer pipe 1 and the inner pipe 2 are not assembled, the water inlet chamber 10 and the water outlet chamber 11 communicate with each other through the through hole 13 opened in the partition wall 12.
[0008]
In the water discharge chamber 11, an inlet 11a is formed on a longitudinal axis opposite to the partition wall 12 formed between the water discharge chamber 11 and a female screw is engraved on an inner peripheral surface of the inlet 11a. One end of the outer pipe 1 is screwed and connected to the inlet 11 a so that the outer pipe 1 communicates with the water discharge chamber 11.
[0009]
In the case where the outer pipe 1 is configured to communicate with the water discharge chamber 11, one end side open end 1a of the outer pipe 1 comes into contact with a pressing ring 16 to be described later and is substantially closed. One or more water passages 15 are formed at one end of the pipe 1, or a water passage that communicates with the press ring 16 from the one end of the outer pipe 1 into the water discharge chamber 11 is formed.
[0010]
On the other hand, an abutment flange 14 that abuts so as to cover a through hole 13 formed in a partition wall 12 between the water discharge chamber 11 and the water inlet chamber 10 is provided at the open end on one end side of the inner pipe 2. At one end of the inner pipe 2, a pressing ring 16 for pressing the contact flange 14 against the edge of the through hole 13 is loosely fitted so as to be movable in the axial direction.
The pressing ring 16 is axially movably attached to one end of the inner pipe 2, and when the outer pipe 1 is screwed to the inlet 11 a of the water discharge chamber 11, the pressing ring 16 is closed at one end side open end 1 a of the outer pipe 1. Accordingly, it is screwed and pressed in the axial direction toward the contact flange 14.
[0011]
The abutment flange 14 substantially separates the outflow chamber 11 and the inflow chamber 10 so that the cooling water in the outflow chamber 11 and the cooling water in the inflow chamber 10 are not mixed. It is formed to have a size capable of covering the through hole 13 between the chambers 10 and at the same time exerts a spring property in the axial direction of the inner pipe 2 so as to elastically abut against the edge of the through hole 13. Preferably, it is formed in a trumpet shape.
[0012]
In order to assemble the mold cooling pipe A, a pressing ring 16 is mounted on one end of the inner pipe 2 so as to be movable in the axial direction in advance, and one end of the inner pipe 2 is connected to a hose. The connection base 7 is inserted from the entrance 11 a of the water discharge chamber 11.
Next, one end of the outer pipe 1 is inserted through the outer periphery of the inner pipe 2 and one end of the outer pipe 1 is screwed to the inlet 11 a of the water discharge chamber 11, and the outer pipe 1 is assembled to the hose connection base 7. At this time, when the outer pipe 1 is screwed and connected to the inlet 11a of the water discharge chamber 11, a pressing ring 16 loosely fitted to one end of the inner pipe 2 is formed at an open end of one end of the inner pipe 2. The outer pipe 1 is axially screw-pressed to the contact flange 14 by the one end side open end 1a of the outer pipe 1. Then, the abutment flange 14 of the inner pipe 2 is pressed through the pressing ring 16 against the edge of the through hole 13 formed in the partition wall 12 between the water discharge chamber 11 and the water inlet chamber 10. Thereby, the cooling water of the water discharge chamber 11 and the cooling water of the water inlet chamber 10 are separated by the contact flange 14 of the inner pipe 2, and the inner pipe 2 is in communication with the water inlet chamber 10, and the inner pipe 2 is connected to the outer pipe 2. The other ends of the outer pipe 1 and the inner pipe 2 project from the hose connection base 7 with a double pipe structure.
[0013]
When the mold cooling pipe A is mounted in the cooling hole 8 of the mold B, a ring-shaped packing is attached to the outer periphery of the other end of the outer pipe 1 and pushed into the cooling hole 8 of the mold B. Alternatively, as shown in the illustrated embodiment, a male screw 1d is engraved on the outer circumference of the other end of the outer pipe 1 and screwed into the cooling hole 8 of the mold B, and finally, the water inlet connection port 4 and A hose 17 is connected to each of the water outlets 6.
Thus, the cooling water supplied from the water inlet connection port 4 of the hose connection mouthpiece 7 passes through the water inlet chamber 10, from the one end side opening 2 c of the inner pipe 2 to the inside of the inner pipe 2, that is, the cooling water outward path 3, and the mold B The heat is exchanged in the cooling hole 8 to take away the heat of the mold. Then, the cooling water exchanged in the cooling hole 8 of the mold B passes through the cooling water return path 5 formed between the outer pipe 1 and the inner pipe 2, and is opened at one end of the outer pipe 1 or the water passage 15. From the water discharge chamber 11, from which the water is discharged to the outside through the water discharge connection port 6.
[0014]
【The invention's effect】
Since the cooling pipe for a mold of the present invention is configured as described above, the pressing ring is mounted on the inner pipe so as to be movable in the axial direction, and one end of the inner pipe is inserted from the inlet of the water discharge chamber of the hose connection base. Later, by simply screwing the outer pipe into the water outlet of the hose connection mouth, the inner pipe will be in communication with the water inlet chamber, and the inner pipe will be held coaxially with the outer pipe with a double pipe structure It protrudes from the hose connection base.
Therefore, there is no need to braze or weld the press ring to the inner pipe, and the number of parts is reduced, such as the need for a plug lid compared to conventional products. And the manufacturing cost 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 sectional view showing one embodiment of the present invention.
FIG. 3 is a sectional view showing a conventional example.
FIG. 4 is a sectional view showing another conventional example.
[Explanation of symbols]
A: Cooling pipe for mold B: Mold 1: Outer pipe 2: Inner pipe 3: Cooling water outgoing route 4: Inlet connection port 5: Cooling water return path 6: Outlet connection port 7: Hose connection port 8: Cooling hole 9: Holding plate 10: Water inlet chamber 11: Water outlet chamber 12: Partition wall 13: Through hole 14: Abutting flange 15: Water inlet 16: Pressing ring 17: Hose 1a: Open end of one end of outer pipe

Claims (2)

An inner pipe is arranged inside the outer pipe to form a forward path and a return path of the cooling water, and a hose connection having an inlet port leading to the outward path and an outlet port leading to the return path at one end of the outer pipe and the inner pipe. In the mold cooling pipe configured by attaching a mouthpiece, the hose connection mouthpiece, a water inlet chamber communicating with the water inlet connection port and a water outlet chamber communicating with the water outlet connection port are formed side by side on a longitudinal axis, and formed. One end of the outer pipe is screwed into the inlet of the water discharge chamber to make the outer pipe communicate with the water discharge chamber, and an abutment flange is formed in the same end at an open end of one end of the inner pipe. The contact flange is brought into contact so as to cover a through hole formed between the water inlet chamber and the water discharge chamber, and a pressing ring is attached to one end of the inner pipe so as to be movable in the axial direction. The one end of the outer pipe The abutment flange cooling the pipe mold, characterized in that formed by configured to be pressed against the opening edge portion of the through hole by threadedly pressing the mouth end. The mold cooling pipe according to claim 1, wherein the contact flange is formed in a substantially trumpet shape exhibiting a spring property in an axial direction of the inner pipe.

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