JP3186030B2 - Cooling pipe for mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling pipe for a die for cooling a die by mounting it in a cooling hole of a die used for die casting or injection molding, and more particularly to a cooling pipe for an outer pipe. An inner pipe is arranged to form a forward path and a return path of the cooling water, and a hose connection base having an inlet connection port leading to the outward path and an outlet connection port leading to the return path is attached to one end of the outer pipe and the inner pipe. And a cooling pipe for a mold.

[0002]

2. Description of the Related Art As a technique close to the present invention, Japanese Utility Model 6-1
There is one disclosed in Japanese Patent No. 4926. 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 the water inlet chamber b
A holding pipe e having a communication hole d opened therein is installed so as to be able to be inserted and removed in the axial direction. Then, the opening h is brought into contact with the holding tube e. Therefore, dust entering the holding pipe e tends to accumulate at the opening h on one end side of the inner pipe g to cause clogging, and at the same time, the structure requires the stopper lid i and the manufacturing cost is increased. Was.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and it is difficult to cause clogging of an opening (water inlet) at one end of an inner pipe and to reduce the number of parts. It is an object of the present invention to provide a mold cooling pipe capable of reducing the manufacturing cost.

[0004]

According to the present invention, there is provided a mold cooling pipe according to the present invention, in which an inner pipe is disposed in an outer pipe to form a forward path and a return path of cooling water. In a cooling pipe for a mold, which is provided with a hose connection base provided with an inlet connection port leading to the outward path and an outlet connection port leading to the return path at one end of the inner pipe, the hose connection base is connected to the water connection port. Forming a water inlet chamber communicating with the water outlet chamber communicating with the water outlet on the longitudinal axis,
The one end opening of the outer pipe is connected in communication with the water discharge chamber, and the one end opening of the inner pipe is penetrated through the water discharge chamber so as to protrude and connect to the water entry chamber. Things.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 with a water inlet connection port 4 leading to a cooling water outward path 3 and a water outlet connection leading to a cooling water return path 5 at one end side of an outer pipe 1 and an inner pipe 2 arranged concentrically. A hose connection mouthpiece 7 having a mouth 6 is integrally attached. And mold B
Cooling holes 8 drilled from the back side of the
And is fixed by a holding plate 9 provided on the back side of the mold B so as not to come out of the cooling hole 8.

In this type of mold cooling pipe A, the inner pipe 2 is usually formed to be slightly longer than the outer pipe 1, the inside pipe 2 is used as a cooling water outward path 3, and the outer pipe 1 and the inner pipe 2 are connected to each other. The space between them is defined as a cooling water return path 5.

The hose connection base 7 is made of a substantially cylindrical or polygonal metal block material having an appropriate length, and is provided with a water inlet connection port 4 leading to the cooling water outward path 3 and a cooling water return path 5.
Are 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. It becomes.

[0008] In the water discharge chamber 11, a connection hole 13 formed with an internal thread on the inner peripheral surface thereof is formed at a position opposite to the partition wall 12 formed between the water discharge chamber 10 and the water supply chamber 10 on the longitudinal axis. The one end 1a of the outer pipe 1 is screwed and connected to the connection hole 13 so that the one end opening 1c of the outer pipe 1 is connected to the water discharge chamber 11.

A partition wall 12 formed between the water discharge chamber 11 and the water input chamber 10 has a female screw on the inner peripheral surface coaxially coaxial with the connection hole 13 formed on the water discharge chamber 11 side. Is formed, and one end 2a of the inner pipe 2 is screwed into the through hole 14 through the water discharge chamber 11, and the one end opening 2c of the inner pipe 2 is connected to the water inlet chamber 10. Make communication connection. At this time, one end 2a of the outer periphery of the inner pipe 2
A water stopcock 15 having a male screw engraved on its outer periphery is integrally attached thereto, and the water stopcock 15 is tightly screwed into a female screw of the through hole 14 so that the one end side opening 2c of the inner pipe 2 is filled with water. The connection is made to protrude into the chamber 10.

When assembling the mold cooling pipe A, first, one end 2a of the inner pipe 2 is passed through the water discharge chamber 11 of the hose connection mouthpiece 7, and the water stopcock 1 is inserted into the through hole 14.
5 and screwed together. Then, the outflow chamber 11 and the inflow chamber 10 are separated by the stopcock 15 and at the same time, the inner pipe 2
One end side opening 2c is connected to and protrude into water inlet chamber 10. Next, one end 1a of the outer pipe 1 is inserted into the outer circumference of the inner pipe 2 and screwed and connected to the connection hole 13 of the hose connection base 7. Then, the one end opening 1c of the outer pipe 1 is connected to the water discharge chamber 11, and the other ends 1b, 2b of the outer pipe 1 and the inner pipe 2 project from the hose connection base 7 with a double pipe structure.

When the mold cooling pipe A is mounted in the cooling hole 8 of the mold B, the other end 1b of the outer pipe 1
Cooling hole 8 of mold B by attaching ring-shaped packing
The male screw 1d is inserted into the outer pipe 1 or a male screw 1d is engraved on the outer circumference of the other end 1b of the outer pipe 1 as shown in the illustrated embodiment.
Then, the hose 16 is connected to the water connection port 4 and the water connection port 6, respectively. 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 of the mold to take the heat of the mold. The cooling water heat 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 flows out of the water discharge chamber through one end side opening 1 c of the outer pipe 1. 1
1 and is discharged to the outside through the water connection port 6 therefrom.

[0012]

According to the cooling pipe for a mold of the present invention, a water inlet chamber communicating with the water inlet port and a water outlet chamber communicating with the water outlet port are formed on the hose connecting base on the longitudinal axis. One end of the pipe was connected to the water chamber, and the other end of the inner pipe was penetrated through the water chamber and connected to the water chamber in a protruding manner. Dirt does not accumulate in the opening at one end of the inner pipe, so that clogging of the opening at one end of the inner pipe can be made less likely to occur as compared with conventional products.

[0013]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a state in which a mold is mounted on a cooling hole 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.

[Explanation of symbols]

A: Cooling pipe for mold B: Mold 1: Outer pipe 2: Inner pipe 3: Cooling water outward path 4: Incoming water connection port 5: Cooling water return path 6: Outflow connection port 7: Hose connection port 8: Cooling hole 9: Holding plate 10: Water inlet chamber 11: Water outlet chamber 12: Partition wall 13: Connection hole 14: Through hole 15: Water stopcock 16: Hose 1a: One end of outer pipe 2a: One end of inner pipe 1c: One end of outer pipe Side opening 2c: One end side opening of inner pipe

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B22D 17/22 B22C 9/06 B29C 33/04 B29C 45/73

Claims (1)

(57) [Claims] 1. An inner pipe is arranged in an outer pipe to form a forward path and a return path of cooling water. One end of each of the outer pipe and the inner pipe has a water inlet port leading to the outward path and a water outlet port leading to the return path. In a cooling pipe for a mold configured by attaching a hose connection base provided with a water supply chamber communicating with the water connection port and a water discharge chamber communicating with the water connection port on the hose connection base on a longitudinal axis. Formed, and one end side opening of the outer pipe is communicated and connected to the water discharge chamber,
A cooling pipe for a mold, characterized in that one end side opening of the inner pipe penetrates the water discharge chamber and is connected to and protrude from the water inlet chamber in a protruding manner.