JP2013158805A - Cooling pipe for dies - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling pipe for dies, in which cooling water is flowed in an inner pipe efficiently.SOLUTION: A cooling pipe 10 for dies includes an outer pipe 11, an inner pipe 12 arranged coaxially in the inner space of the outer pipe 11, and a hose connection mouthpiece 13 detachably connected with the outer pipe 11 and the inner pipe 12. The outer pipe 11 and the inner pipe 12 are integrated via an outer body 15, one end of the outer body 15 to which one end of an inlet pipe forming a forward path for cooling water is connected is protruded outward from one side surface 13b forming the hose connection mouthpiece 13 along the axis of the outer pipe 11 and the inner pipe 12, and an inlet for cooling water to the inner pipe 12 is provided at one end of the outer body 15.

Description

  The present invention relates to a mold cooling pipe that is mounted in a cooling hole of a mold used for die casting, injection molding or the like and cools the mold.

  As the mold cooling pipe, the inner pipe (inner pipe) is arranged in the outer pipe (outer pipe) to form the outgoing path and the return path of the cooling water, and the outgoing path is connected to one end side of the outer pipe and the inner pipe. There has been known a construction in which a hose connection base provided with a water inlet connection port leading to a water outlet and a water outlet connection port leading to the return path is attached (for example, see Patent Document 1).

JP 2004-298922 A

  However, in the mold cooling pipe A disclosed in FIG. 1 of Patent Document 1, the cooling water that has passed through the water inlet 14 is formed at one end of the inner pipe 2 in the narrow water inlet chamber 1a having a small volume. The water is suddenly bent toward the water inlet, and immediately after being bent, the water flows into the inner pipe 2 from the cooling water inlet. For this reason, there is a problem that the flow path resistance when passing through the water inlet chamber 1a increases, and the cooling water cannot be efficiently flowed into (supplied to) the inner pipe 2.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mold cooling pipe capable of efficiently flowing cooling water into an inner pipe.

The present invention employs the following means in order to solve the above problems.
The mold cooling pipe according to the present invention includes an outer pipe, an inner pipe disposed with the same axis in the inner space of the outer pipe, and a hose to which the outer pipe and the inner pipe are detachably connected. A mold cooling pipe provided with a connection base, wherein the outer pipe and the inner pipe are integrated via an outer body, and one end of an inlet pipe forming an outward path of cooling water is connected. One end portion of the outer body protrudes outward along the axial direction of the outer pipe and the inner pipe from one side surface forming the hose connection base, and cooling to the inner pipe is performed at one end of the outer body. There is a water inlet.

According to the mold cooling pipe according to the present invention, the cooling water is directly supplied from the inlet pipe to the cooling water inlet leading to the inner pipe. The cooling water inlet formed at one end is suddenly bent and no longer flows into the inner pipe immediately after being bent.
Thereby, the flow resistance at the time of flowing into the inner pipe from the inlet pipe can be made smaller than before, and the cooling water can be efficiently flowed (supplied) into the inner pipe.

  In the mold cooling pipe, it is more preferable that a circumferential groove that fits with a one-touch joint connected to one end of the inlet pipe is formed on the outer peripheral surface of one end of the outer body.

  According to such a mold cooling pipe, the inlet pipe can be quickly and easily removed from one end portion of the outer body or can be quickly and easily attached to the outer body.

  In the mold cooling pipe, it is more preferable that the outer pipe and the inner pipe integrated via the outer body are configured to be slidable in the axial direction with respect to the hose connection base. .

  According to such a mold cooling pipe, the outer pipe and the inner pipe integrated through the outer body can be slid (slid) in the axial direction with respect to the hose connection base. It can be quickly and easily removed and can be quickly and easily attached to the hose connection base.

  In the mold cooling pipe, the one side surface and the other side surface forming the hose connection base and parallel to the one side surface are attached to the hexagonal portion provided in the outer body and the outer body. It is more preferable to be sandwiched between retaining rings.

  According to such a mold cooling pipe, the movement of the outer main body in the axial direction is restricted by the hexagonal portion and the retaining ring, and the outer pipe and the inner pipe integrated through the outer main body are moved in the axial direction. Can be prevented from moving.

  In the mold cooling pipe, it is more preferable that the inner pipe is configured to be detachable from the outer body.

  According to such a mold cooling pipe, only the inner pipe can be replaced, and the running cost can be reduced.

  According to the mold cooling pipe of the present invention, there is an effect that the cooling water can efficiently flow into the inner pipe.

It is a fragmentary longitudinal cross-section which shows the state by which the inlet piping which forms the outward path of cooling water, and the outlet piping which forms the return path of cooling water were connected to the cooling pipe for metal mold | die which concerns on 1st Embodiment of this invention. It is a fragmentary longitudinal cross-sectional view of the cooling pipe for metal mold | die which concerns on 1st Embodiment of this invention. It is the disassembled sectional view which decomposed | disassembled and showed each component of the cooling pipe for metal mold | die which concerns on 1st Embodiment of this invention. It is a figure which shows the cooling pipe for metal mold | die which concerns on 2nd Embodiment of this invention, Comprising: (a) is a fragmentary longitudinal cross-sectional view, (b) is a top view of a C-shaped retaining ring. It is the disassembled sectional view which decomposed | disassembled and showed each component of the cooling pipe for metal mold | die which concerns on 2nd Embodiment of this invention.

Hereinafter, the cooling pipe for metal mold | die which concerns on 1st Embodiment of this invention is demonstrated, referring FIGS. 1-3.
FIG. 1 is a partial longitudinal sectional view showing a state in which an inlet pipe that forms a forward path of cooling water and an outlet pipe that forms a return path of cooling water are connected to a mold cooling pipe according to the present embodiment. FIG. 3 is an exploded cross-sectional view showing parts of the mold cooling pipe according to this embodiment in an exploded manner.

As shown in FIG. 1, the mold cooling pipe 10 includes an outer pipe (outer pipe) 11, an inner pipe (inner pipe) 12 arranged with the same axis in the inner space of the outer pipe 11, A hose connection base (case) 13 connected to the outer pipe 11 and the inner pipe 12 is provided.
The outer pipe 11 has a die connecting male screw portion 14 used for connecting to the die, and an outer main body 15 is provided at the base end portion of the outer pipe 11.

  As shown in FIG. 2 or FIG. 3, a hexagonal portion 16 having a two-sided width for rotating the outer pipe 11 is provided at one end of the outer body 15. The outer body 15 is connected to the (first) axial hole 17a extending in the axial direction and communicating with the internal space of the outer pipe 11, and the axial hole 17a. A water discharge hole 18 extending in a direction orthogonal to 17a is formed. The other end of the outer main body 15 is formed with a female screw portion 20 that is screwed with a screw portion formed on the outer peripheral surface of an inner hexagon screw 19 described later. Further, the space formed on the inner side (radially inner side) of the female screw portion 20 is communicated via a (second) axial hole portion 17b having an inner diameter smaller than the inner diameter of the axial hole portion 17a. That is, the space formed inside the female screw portion 20 communicates with the internal space formed inside (in the radial direction) of the outer pipe 11 via the axial holes 17a and 17b.

  The hose connection base 13 is a member having a rectangular parallelepiped appearance, and a water discharge connection 21 leading to the return path of the cooling water is formed on one surface (surface located on the upper side in the drawing) 13a. A water discharge chamber 22 formed inside the hose connection base 13 is connected to the mouth 21. The water discharge chamber 22 penetrates in the length direction of the hose connection base 13 (direction orthogonal to the extending direction of the water supply connection opening 21) (two parallel side surfaces orthogonal to one surface 13a forming the hose connection base 13 (FIG. In the left side and the right side surface (through 13b and 13c), and a through hole communicating with the water outlet port 21. The water discharge chamber 22 houses one end of the outer main body 15 so that the water discharge chamber 22 and the water discharge hole 18 communicate with each other. The water discharge chamber 22 is sealed (sealed) by an O-ring (seal ring) 23 provided on one end side of the outer body 15 and an O-ring (seal ring) 24 provided in the center of the outer body 15. The O-ring 23 is accommodated in a groove 25 provided on one end side of the outer body 15, and the O-ring 24 is accommodated in a groove 26 provided in the center of the outer body 15. On the other hand, one end of a straight type one-touch joint 27 (see FIG. 1) is connected (screwed) to the water outlet 21, and the other end of the one-touch joint 27 forms an outlet pipe 28 that forms a return path for cooling water. One end of (see FIG. 1) is connected.

  The in hexagon screw 19 is formed with a hexagonal hexagonal hole 29 in plan view into which the tip of the hexagonal wrench is inserted, and an axial hole (not shown) that extends in the axial direction and communicates with the hexagonal hole 29. Has been. A base end (one end) portion of the inner pipe 12 is inserted into an axial hole (water inlet hole) of the in hexagon screw 19, and the axial hole communicates with the internal space of the inner pipe 12. . The inner pipe 12 and the inner hexagon screw 19 are fixed by brazing. Further, the inner hexagon screw 19 is accommodated in the female screw portion 20, whereby the opening on one side (opposite side of the hexagonal portion 16) of the axial hole portion 17 b formed in the outer main body 15 is closed, and the hexagonal hole 29 is closed. All of the inflowing cooling water flows into the inner space of the inner pipe 12, and all of the cooling water returning through the space between the outer pipe 11 and the inner pipe 12 flows out of the outer body 15 through the water outlet hole 18. To do.

  In addition, the code | symbol 30 in FIG. 3 has shown the solder | brazing which joins the inner pipe 12 and the in hexagon screw 19. Further, the opening formed at one end of the hexagonal hole 29 (the end opposite to the side where the inner pipe 12 is joined) serves as a cooling water inlet (forms a cooling water inlet).

  A groove (circumferential groove) 31 having a V-shaped cross-sectional view (or a U-shaped cross-sectional view) is formed along the circumferential direction on the outer peripheral surface located at the center of the other end of the outer main body 15. One end of an elbow type (L-shaped) one-touch joint 32 (see FIG. 1) is connected to the other end of the outer body 15, and an inlet that forms an outward path of cooling water is formed at the other end of the one-touch joint 32. One end of the pipe 33 (see FIG. 1) is connected. A plurality of claws (not shown) projecting inward (radially inward) at one end of the one-touch joint 32 are fitted in the groove 31. These claws slide (push in) the flange 34 provided at one end of the one-touch joint 32 to its own side (that is, the upstream side in the flow direction of the cooling water, in other words, the bent portion side of the one-touch joint 32). As a result, it spreads outward in the radial direction so that the entire claw comes out of the groove 31.

Further, a groove (not shown) similar to the groove 31 is formed at one end of the outlet pipe 28 and one end of the inlet pipe 33, and the groove formed at one end of the outlet pipe 28 is one-touch. A plurality of claws (not shown) projecting inward (radially inward) at the other end of the joint 27 are fitted, and the other end of the one-touch joint 32 is inserted into a groove formed at one end of the inlet pipe 33. A plurality of claws (not shown) projecting inward (radially inward) in FIG.
Reference numerals 35 and 36 in FIG. 1 are flanges having the same function (having a function) as the flange 34 described above.

  In the mold cooling pipe 10 configured in this way, the cooling water supplied to one end of the inlet pipe 33 flows directly into the inner space of the inner pipe 12 through the one-touch joint 32 and the hexagonal hole 29 (induction). After the mold is cooled by being discharged from the tip of the inner pipe 12, the water outlet hole 18, the water outlet chamber 22, and the one-touch joint 27 are provided between the inner peripheral surface of the outer pipe 11 and the outer peripheral surface of the inner pipe 12. And flows into the outlet pipe 28 (guided).

According to the mold cooling pipe 10 according to the present embodiment, the cooling water is directly supplied from the inlet pipe 33 to the cooling water inlet leading to the inner pipe 12, so that a small water intake chamber having a small volume as in the prior art is used. Thus, the cooling water inlet formed at one end of the inner pipe is suddenly bent and no longer flows into the inner pipe immediately after being bent.
Thereby, the flow resistance at the time of flowing into the inner pipe 12 from the inlet pipe 33 can be made smaller than before, and the cooling water can be efficiently flowed (supplied) into the inner pipe 12.

  Further, according to the mold cooling pipe 10 according to the present embodiment, the outer peripheral surface of the one end portion of the outer main body 15 is formed with a 31 groove that fits with the one-touch joint 32 connected to one end portion of the inlet pipe 33. Therefore, the inlet pipe 33 can be quickly and easily removed from one end portion of the outer main body 15 or can be quickly and easily attached to the outer main body 15.

Furthermore, according to the mold cooling pipe 10 according to the present embodiment, the outer pipe 11 and the inner pipe 12 are integrated via the outer main body 15, and the outer outer integrated via the outer main body 15 is integrated. The pipe 11 and the inner pipe 12 are configured to be slidable (slidable) in the axial direction with respect to the hose connection base 13.
Thereby, the outer pipe 11 and the inner pipe 12 integrated through the outer body 15 are integrated through the outer body 15 only by sliding (sliding) in the axial direction with respect to the hose connection base 13. The outer pipe 11 and the inner pipe 12 can be quickly and easily detached from the hose connection base 13 or can be quickly and easily attached to the hose connection base 13.

  Furthermore, according to the mold cooling pipe 10 according to the present embodiment, since the inner pipe 12 is configured to be detachable with respect to the outer main body 15, only the inner pipe 12 can be replaced, and running Cost can be reduced.

A mold cooling pipe according to a second embodiment of the present invention will be described with reference to FIGS. 4 and 5.
4A and 4B are diagrams showing a mold cooling pipe according to the present embodiment, wherein FIG. 4A is a partial longitudinal sectional view, FIG. 4B is a plan view of a C-shaped retaining ring, and FIG. 5 is a mold according to the present embodiment. It is the disassembled sectional view which decomposed | disassembled and showed each component of the cooling pipe for molds.
The mold cooling pipe 40 according to the present embodiment is different from that of the first embodiment described above in that an outer main body 41 is provided instead of the outer main body 15. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.

As shown in FIG. 4 or 5, in the outer main body 41 according to the present embodiment, the hexagonal portion 16 is provided on the outer side (left side in the drawing) of the O-ring 24 and the groove 26, and the outer side of the O-ring 24 and the groove 26 ( A groove 42 is provided on the right side in the drawing.
The groove 42 is formed along the circumferential direction on the outer peripheral surface of one end of the outer main body 41, and the inner peripheral portion of a C-shaped retaining ring (retaining ring) 43 shown in FIG. It is like that. Further, when the outer main body 41 is inserted into the water discharge chamber 22 and the C-shaped retaining ring 43 is fitted into the groove 42, as shown in FIG. 4A, it is orthogonal to the one surface 13 a that forms the hose connection base 13. Two parallel side surfaces 13b and 13c are sandwiched between the hexagonal portion 16 and the C-shaped retaining ring 43 so that the outer main body 41 is prevented from moving in the axial direction (left-right direction in the figure).

According to the mold cooling pipe 40 according to the present embodiment, the parallel two side surfaces 13b and 13c perpendicular to the one surface 13a forming the hose connection base 13 are provided with the hexagonal portion 16 provided on the outer main body 41, and the outer main body. Since the hexagonal portion 16 and the C-shaped retaining ring 43 restrain the movement of the outer body 41 in the axial direction between the C-shaped retaining ring 43 and the C-shaped retaining ring 43, the outer body. The movement in the axial direction of the outer pipe 11 and the inner pipe 12 integrated via 41 can be prevented.
Other functions and effects are the same as those of the above-described first embodiment, and thus description thereof is omitted here.

In addition, this invention is not limited to embodiment mentioned above, In the range which does not deviate from the summary of this invention, it can change suitably.
For example, in the embodiment described above, the inlet pipe 33 and the outer body 15 are connected via the elbow type one-touch joint 32, but the inlet pipe 33 and the outer body 15 are connected by a straight type one-touch joint. May be.

  Further, the retaining ring is not limited to the C-shaped retaining ring 43, and an E-shaped retaining ring or the like can also be adopted.

10 Mold cooling pipe 11 Outer pipe 12 Inner pipe 13 Hose connection base 13b Surface (one side)
13c side (other side)
15 Outer body 16 Hexagon part 31 Groove (circumferential groove)
32 One-touch coupling 33 Inlet piping 40 Mold cooling pipe 41 Outer body 43 C-type retaining ring (retaining ring)

Claims (5)

A mold cooling pipe comprising an outer pipe, an inner pipe disposed with the same axis in the inner space of the outer pipe, and a hose connection base to which the outer pipe and the inner pipe are detachably connected. Because
The outer pipe and the inner pipe are integrated via an outer body, and one end portion of the outer body to which one end portion of an inlet pipe forming a forward path of cooling water is connected forms one of the hose connection caps. For molds characterized in that the outer pipe protrudes outward along the axial direction of the outer pipe and the inner pipe, and a cooling water inlet to the inner pipe is provided at one end of the outer body. Cooling pipe.   2. The mold cooling pipe according to claim 1, wherein a circumferential groove that fits with a one-touch joint connected to one end of the inlet pipe is formed on an outer peripheral surface of one end of the outer body.   The said outer pipe integrated with the said outer main body and the said inner pipe are comprised so that it can slide to an axial direction with respect to the said hose connection mouthpiece, The axial direction of Claim 1 or 2 characterized by the above-mentioned. Mold cooling pipe.   The one side surface and the other side surface forming the hose connection base and parallel to the one side surface are sandwiched between a hexagonal portion provided on the outer body and a retaining ring attached to the outer body. The mold cooling pipe according to claim 3, wherein the mold cooling pipe is provided.   The mold cooling pipe according to any one of claims 1 to 4, wherein the inner pipe is configured to be detachable from the outer body.

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