JP2007229964A - Cooling fluid leak detector of injection mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling fluid leak detector of an injection mold capable of confirming the leak of the cooling fluid in the injection mold beforehand by a simple part constitution without attaching the same to an injection molding machine, enhanced in operability and also safe in workability. <P>SOLUTION: The cooling fluid leak detector of the injection mold comprises the inlet side communication means 1 which communicates with an inlet side to pass the cooling fluid to the injection mold 100, a fluid pressurizing supply means 3 for pressurizing the fluid 2 to supply the same to the inlet side communication means 1, the outlet side communication means 4 which communicates with an outlet side permitting the cooling fluid to discharge the fluid 2 supplied from the fluid pressurizing supply means 3 to the injection mold 100, and a discharge tank 5 for housing the fluid 2 discharged from the outlet side communication means 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cooling fluid leak detection device for an injection mold. More specifically, the present invention relates to a cooling fluid leak detection device for an injection mold that detects leakage of a cooling fluid that passes through the injection mold.

In order to check the leakage of cooling water in the conventional injection mold, after assembling the injection mold, attach it to the injection molding machine and use the temperature control hose from the temperature controller located on the equipment side. Is connected to an injection mold and cooling water is turned into the water circuit to check for water leakage.
If a water leak is found, the injection mold must be removed from the injection molding machine, the water leak location must be investigated and the water leak must be repaired.
An air supply source, an air supply solenoid valve for controlling the air supply, and an air release solenoid valve for opening the water circuit to the atmosphere are provided, and the air supply solenoid valve is opened when replacing the mold. Supply air into the water circuit on the mold side from the air supply source, push the water in the water circuit to the temperature regulator side, close the circuit open / close solenoid valve, and open the atmosphere open solenoid valve In addition, when changing molds, injection molding can be performed easily because the water in the water circuit on the mold side can be easily drained and water does not overflow around the mold. A metal mold apparatus has also been proposed (see Patent Document 1).
However, the water leakage check of the conventional injection mold is performed after the injection mold is assembled and then attached to the injection molding machine, using the temperature control hose from the equipment side to the IN side of the injection mold Connect to the OUT side, turn on the power of the temperature regulator, turn water into the water circuit, and check for water leakage in the injection mold.
If a water leak is found, the injection mold is removed from the injection molding machine, and the plate and nest where the water has leaked are removed to repair the water leak. After assembling the injection mold again, it is attached to the injection molding machine and water leakage is confirmed. And since this operation has to be repeated until there is no water leakage, the equipment operation rate and work efficiency are lowered.
Japanese Patent No. 2926634

The conventional method for checking the leakage of cooling water in an injection mold is to remove the injection mold from the injection molding machine and separate the plate and nesting where water has leaked. After repairing the water leak and reassembling the mold for injection molding, it is attached to the injection molding machine to check the water leak. This operation must be repeated until there is no water leak. The problem that the rate and work efficiency fell occurred.
Therefore, an object of the present invention is to solve such problems. In other words, with a simple component structure, it is possible to check the leakage of the cooling fluid in the injection mold in advance without attaching it to the injection molding machine, and the operability is improved and the workability is also safe. An object of the present invention is to provide a cooling fluid leak detection device for a molding die.

In order to achieve the above object, the present invention as set forth in claim 1 is directed to an injection mold in a cooling fluid leak detection apparatus for an injection mold that detects leakage of cooling fluid through an injection mold. Inlet side communication means communicating with the inlet side through which the cooling fluid passes, fluid pressurization supply means for pressurizing and supplying fluid to the inlet side communication means, and the fluid supplied from the fluid pressure supply means An injection molding die comprising: outlet side communication means that communicates with and discharges an outlet side through which the cooling fluid passes through an injection molding mold; and a discharge tank that contains the fluid discharged from the outlet side communication means. It is a cooling fluid leak detection device.
Alternatively, the present invention according to claim 2 is the cooling fluid leakage detection device for injection mold according to claim 1, wherein the inlet side communication means is provided on the side surface of the injection mold with the cooling fluid. A joint plug that communicates with the inlet side of a pipe through which the fluid passes, and a joint socket that communicates with a supply pipe that supplies the fluid from the fluid pressure supply means that fits into the joint plug or an air supply source that discharges the fluid And a cooling fluid leak detection device for an injection mold.

Alternatively, according to a third aspect of the present invention, in the cooling fluid leakage detecting device for an injection molding die according to the second aspect, the joint plug allows the cooling fluid to pass through a side surface of the injection molding die. It is a cooling fluid leak detection device of an injection mold provided with a plurality of exchangeable joint plugs for various pipes that match the inlet side of the pipe.
Alternatively, according to a fourth aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to the second or third aspect, the joint plug is disposed on the core side of the injection mold. It is a cooling fluid leak detection device for an injection mold having a core side joint plug that is aligned with the inlet side of the pipe through which fluid passes.
Alternatively, according to a fifth aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to the second, third, or fourth aspect, the joint plug is disposed on the cavity side of the injection mold. It is a cooling fluid leak detection device for an injection mold having a cavity side joint plug matched to the inlet side of the pipe through which the cooling fluid passes.
Alternatively, according to a sixth aspect of the present invention, in the cooling fluid leakage detecting device for an injection mold according to any one of the second to fifth aspects, the joint plug is formed of the injection mold. It is a cooling fluid leak detection device for an injection mold having a plurality of exchangeable exhaust air joint plugs for supplying air for discharging cooling water in accordance with the inlet side.

Alternatively, according to a seventh aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to any one of the second to sixth aspects, the joint plug identifies various joint plugs. It is a cooling fluid leak detection device of an injection mold provided with an identification display part.
Alternatively, the present invention according to claim 8 is the cooling fluid leakage detection device for an injection mold according to claim 1, wherein the inlet side communication means includes the cooling fluid in a nest of the injection mold. A free socket that communicates with the inlet side of the hole through which the fluid passes, and the joint that communicates with the supply pipe that supplies the fluid from the fluid pressure supply means that fits into the free socket or the air supply source that discharges the fluid And a cooling fluid leak detection device for an injection mold having a socket.
Alternatively, in the ninth aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to the eighth aspect, the free socket allows the cooling fluid to pass through a nest of the injection mold. It is a cooling fluid leak detection device of an injection mold provided with a plurality of exchangeable shaft tube members according to the inlet diameter of the hole.

Alternatively, the present invention according to claim 10 is the cooling fluid leak detection device for injection mold according to claim 8 or 9, wherein the tip of the free socket is fitted to the shaft tube member. A cooling fluid leak detection device for an injection mold comprising a fixing ring, a sealing O-ring, and a fixing sealing ring.
Alternatively, the present invention according to claim 11 is the cooling fluid leak detection device for injection mold according to claim 8, 9 or 10, wherein the free socket has a hole through which the cooling fluid is passed through the nest. It is a cooling fluid leak detection device for an injection mold having a plurality of exchangeable discharge air free sockets for supplying air for discharging the fluid in accordance with the inlet side.
Alternatively, according to a twelfth aspect of the present invention, in the cooling fluid leak detection device for an injection mold according to any one of the eighth to eleventh aspects, the free socket identifies various free sockets. It is a cooling fluid leak detection device of an injection mold provided with an identification display part.
Alternatively, according to a thirteenth aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to any one of the first to twelfth aspects, the fluid is an injection molding die in which the fluid is cooling water. A cooling fluid leak detection device of the type.

Alternatively, according to a fourteenth aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to any one of the first to thirteenth aspects, the fluid pressure supply means includes a hydraulic pump. It is a cooling fluid leak detection device of an injection mold.
Alternatively, the present invention according to claim 15 is the injection molding cooling fluid leak detecting device according to claim 14, wherein the hydraulic pump includes a water pressure gauge for measuring the water pressure in the supply pipe. It is a cooling fluid leak detection device for a metal mold.
Alternatively, the present invention according to claim 16 is the cooling fluid leak detection device for injection molds according to claim 14 or 15, wherein the hydraulic pump is configured to store and replenish cooling water, and It is a cooling fluid leak detection device for an injection mold having an open / close lever that opens and closes a supply pipe.
Alternatively, the present invention according to claim 17 is the cooling fluid leakage detection device for an injection mold according to any one of claims 1 to 16, wherein the outlet side communication means is the injection mold. The joint plug communicating with the outlet side of the pipe through which the cooling fluid passes through a side surface of the mold, and the joint socket communicating with the recovery pipe for collecting the fluid in the discharge tank fitted to the joint plug. It is a cooling fluid leak detection device of an injection mold.

Alternatively, in the present invention described in claim 18, in the cooling fluid leakage detecting device for injection mold according to claim 17, the joint plug allows the cooling fluid to pass through a side surface of the injection mold. It is a cooling fluid leak detection device of an injection mold provided with a plurality of exchangeable joint plugs for various pipes adapted to the outlet side of the pipe.
Alternatively, the present invention according to claim 19 is the cooling fluid leakage detection device for an injection mold according to claim 17 or 18, wherein the joint plug is placed on the core side of the injection mold. It is a cooling fluid leak detection device of an injection mold provided with the core side joint plug matched with the outlet side of the pipe which lets fluid pass.
Alternatively, the present invention according to claim 20 is the cooling fluid leakage detection device for injection molds according to claim 17, 18 or 19, wherein the joint plug is located on the cavity side of the injection mold. It is a cooling fluid leak detection device of an injection mold provided with a joint plug for a cavity side that matches the outlet side of the pipe through which the cooling fluid passes.
Alternatively, according to a twenty-first aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to any one of the seventeenth to twentieth aspects, the joint plug identifies various joint plugs. It is a cooling fluid leak detection device of an injection mold provided with the above-mentioned identification display part.

Alternatively, the present invention according to claim 22 is the cooling fluid leakage detection device for an injection mold according to claim 1, wherein the outlet side communication means includes the cooling in the insert of the injection mold. An injection mold comprising: the free socket that communicates with an outlet side of the hole through which a fluid passes; and the joint socket that communicates with the recovery pipe that collects the fluid in the discharge tank that is fitted to the free socket. This is a cooling fluid leak detection device.
Alternatively, according to a twenty-third aspect of the present invention, in the cooling fluid leakage detection device for an injection mold according to the twenty-second aspect, the free socket causes the cooling fluid to flow into the nesting of the injection mold. It is a cooling fluid leak detection device of an injection mold provided with a plurality of exchangeable shaft tube members according to the exit diameter of the hole to pass.
Alternatively, in the present invention described in claim 24, in the cooling fluid leakage detection device for injection molds according to claim 22 or 23, the tip end portion of the free socket is fitted to the shaft tube member. It is a cooling fluid leakage detection device for an injection mold comprising the fixing ring, the sealing O-ring, and the fixed sealing ring between a socket and a socket.
Alternatively, the present invention according to claim 25 is the cooling fluid leak detection device for an injection mold according to any one of claims 1 to 24, wherein the discharge tank opens and closes the recovery pipe. It is a cooling fluid leak detection device of an injection mold provided with a lever.
Alternatively, according to a twenty-sixth aspect of the present invention, in the cooling fluid leakage detecting device for an injection mold according to any one of the first to twenty-fifth aspects, the discharge tank discharges the recovered fluid. It is a cooling fluid leak detection device of an injection mold provided with a discharge port.

  According to the present invention, it is possible to confirm the leakage of the cooling fluid in the injection molding mold in advance without attaching it to the injection molding machine with a simple component configuration, and further improve the operability and workability. It is possible to provide a cooling fluid leak detection device for an injection mold that is safe.

Embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a perspective view showing a basic configuration of a state where a cooling fluid leak of an injection mold 100 of an injection mold cooling fluid leak detection apparatus 10 according to an embodiment of the present invention is confirmed. .
In FIG. 1, an injection mold cooling fluid leak detection device 10 for detecting cooling fluid leakage through an injection molding die has an inlet communicating with an injection molding die 100 on the inlet side. Supplyed from the side communication means 1, the fluid pressurization supply means 3 that pressurizes and supplies the coolant 2 that is inexpensive and easy to handle to the inlet side communication means 1, and the water pressure pump 30 of the fluid pressurization supply means 3 The outlet side communication means 4 for discharging the cooling water 20 to be communicated to the outlet side through which the cooling fluid is passed through the injection mold 100 and the discharge tank 5 for storing the cooling water 20 discharged from the outlet side communication means 4 are provided. I have.
The inlet-side communication means 1 is fitted with a joint plug 11 that communicates with the inlet side of a pipe 101 that allows cooling fluid to pass through the side surface of the injection mold 100 in the direction of the arrow (A) shown in the figure. This is a simple component configuration including a supply pipe 31 for supplying the cooling water 20 from the fluid pressurizing supply means 3 or a joint socket 12 communicating with an air supply source (not shown) for discharging the fluid 20.

The water pressure pump 30 includes a water pressure gauge 32 for measuring the water pressure in the supply pipe 31 so that the pressure setting can be freely set.
The outlet side communication means 4 is also fitted with a joint plug 11 that communicates with the outlet side of the pipe 101 through which the cooling fluid passes through the side of the injection mold 100 in the direction of the arrow (B) shown in the figure, and the joint plug 11 is fitted. This is a simple component configuration including the joint socket 12 communicating with the recovery pipe 50 for recovering the cooling water 20 in the combined discharge tank 5.
A method for detecting a leakage of cooling fluid passing through the injection mold 100 by the injection mold cooling fluid leak detection apparatus 10 will be described.
First, the joint plug 11 of the inlet side communication means 1 on the inlet side of the pipe 101 assembled on the side surface of the injection mold 100 and the outlet side of the pipe 101 assembled on the side surface of the injection mold 100. The joint plugs 11 of the outlet side communication means 4 are respectively attached to In the inlet side communication means 1, the joint socket 12 communicating with the supply pipe 31 for supplying the cooling water 20 from the hydraulic pump 30 prepared in advance is fitted into the joint plug 11 communicating with the inlet side of the pipe 101. Install.

Next, in the outlet side communication means 4, the joint socket 12 that communicates with the recovery pipe 50 that collects the cooling water 20 in the discharge tank 5 is fitted and attached to the joint plug 11 that communicates with the outlet side of the pipe 101.
Thereafter, the cooling water 20 stored in the water supply tank 33 of the fluid pressurizing and supplying means 3 is pressurized from the water pressure pump 30 by using the pressure lever 36, and the joint plug 11 and the pipe 101 are connected from the joint socket 12 of the inlet side communication means 1. The cooling water is caused to flow into a cooling water circuit (not shown) in the injection mold 100 through the inlet side.
Next, the pipe 101 is discharged into the discharge tank 5 from the joint plug 11 of the outlet side and outlet side communication means 4 through the joint socket 12, the recovery pipe 50 is closed by the opening / closing lever 51, and the water pressure is increased using the pressure lever 36. The water pressure in the supply pipe 31 is increased from the pump 30. When the specified water pressure is reached, the supply pipe 31 is closed by the open / close levers 34 and 35. After several minutes, the cooling water 20 has not leaked unless the scale of the water pressure gauge 32 is lower than the prescribed water pressure.
Conversely, if the scale of the water pressure gauge 32 is extremely lower than the specified water pressure, the cooling water 20 is leaking. In this case, the injection mold 100 must be disassembled again to repair the leakage of the plate and the nested cooling water 20 where the cooling water 20 has leaked.
Accordingly, it is possible to easily detect and confirm the leakage of the cooling fluid in the injection molding die 100 in advance without attaching to the injection molding machine with a simple component configuration, and the number of components is reduced and the assembly man-hours are reduced. Therefore, it is possible to provide the cooling fluid leakage detection device 10 for an injection mold that is further improved in operability and safe in workability.

FIG. 2 is a perspective view showing a basic configuration in a state of confirming leakage of cooling fluid in the nest 110 of the cooling fluid leakage detection device 10 for an injection mold according to the embodiment of the present invention.
An injection mold cooling fluid leak detection device 10 shown in FIG. 2 includes an inlet side communication means 1 that communicates with an inlet side that allows cooling fluid to pass through a nest 110 of the injection mold 100, and an inlet side communication means 1. Fluid pressure supply means 3 for supplying the cooling water 20 under pressure, and cooling water 20 supplied from the hydraulic pump 30 of the fluid pressure supply means 3 communicate with the outlet 110 through which the cooling fluid passes and are discharged. The outlet side communication means 4 and the discharge tank 5 for storing the cooling water 20 discharged from the outlet side communication means 4 are provided.
The inlet side communication means 1 includes a free socket 14 communicating with the inlet side of the hole 102 through which the cooling fluid passes through the nest 110 in the direction of the arrow (A), and a fluid pressurizing supply means 3 fitted to the free socket 14. This is a simple component configuration including a joint socket 12 communicating with a supply pipe 31 that supplies the cooling water 20 or an air supply source (not shown) that discharges the cooling water 20.
The water pressure pump 30 includes a water pressure gauge 32 for measuring the water pressure in the supply pipe 31 so that the pressure setting can be freely set.
The outlet side communication means 4 also includes a free socket 14 that communicates with the outlet side of the hole 102 through which the cooling fluid passes through the side of the insert 110 in the direction of the arrow (B) shown in the figure, and a discharge tank that fits the free socket 14. 5 is a simple component configuration including a joint socket 12 communicating with a recovery pipe 50 for recovering the cooling water 20.

A method of detecting leakage of cooling fluid passing through the single nest 110 of the injection mold 100 by the injection mold cooling fluid leak detection device 10 will be described.
First, the free socket 14 of the inlet side communication means 1 is provided on the inlet side of the hole 102 formed in the side surface of the insert 110, and the free socket 14 of the outlet side communication means 4 is provided on the outlet side of the hole 102 formed in the side surface of the insert 110. Each is attached. In the inlet side communication means 1, the joint socket 12 that communicates with the supply pipe 31 that supplies the cooling water 20 from the hydraulic pump 30 prepared in advance is fitted into the free socket 14 that communicates with the inlet side of the hole 102. Install.
Next, in the outlet side communication means 4, the joint socket 12 that communicates with the recovery pipe 50 that collects the cooling water 20 in the discharge tank 5 is fitted and attached to the free socket 14 that communicates with the outlet side of the hole 102.
Thereafter, the cooling water 20 stored in the water supply tank 33 of the fluid pressurizing and supplying means 3 is pressurized from the water pressure pump 30 by using the pressure lever 36, the free socket 14, the hole 102 from the joint socket 12 of the inlet side communication means 1. The cooling water is caused to flow into a cooling water circuit (not shown) in the nesting 110 through the inlet side.

Next, the hole 102 is discharged from the free socket 14 of the outlet side communication means 4 through the joint socket 12 into the discharge tank 5, the recovery pipe 50 is closed by the open / close lever 51, and the pressure lever 36 is used to The water pressure in the supply pipe 31 is increased from the pump 30. When the specified water pressure is reached, the supply pipe 31 is closed by the open / close levers 34 and 35. After a few minutes, the cooling water 20 has not leaked unless the scale of the water pressure gauge 32 falls below the prescribed water pressure.
On the contrary, if the scale of the water pressure gauge 32 is extremely lower than the prescribed water pressure, the cooling water 20 is leaking. In this case, the nesting 110 must be released again to repair the leakage of the cooling water 20 where the cooling water 20 has leaked.
Therefore, it is possible to replace the nest 110 in advance without attaching it to the injection molding machine, and to detect and confirm the leakage of the cooling fluid in the nest 110 with a simple component structure. It is possible to provide the cooling fluid leak detection device 10 for an injection mold that has no malfunctions, improves work efficiency, further improves operability, and is safe.

FIG. 3 is an enlarged view showing a basic configuration of the free socket 14 in the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
FIG. 4 is an enlarged view showing the basic configuration of the shaft tube member 240 of the free socket 14 in the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
FIG. 5 is an enlarged view showing the fixing ring 241 of the free socket 14 in the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
FIG. 6 is an enlarged view showing the sealing O-ring 242 of the free socket 14 in the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
FIG. 7 is an enlarged perspective view showing the fixed seal ring 243 of the free socket 14 in the cooling fluid leakage detection device 10 for the injection mold according to the embodiment of the present invention.

FIG. 8 is an enlarged view showing the socket 244 of the free socket 14 in the cooling fluid leakage detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 3, the basic configuration of the free socket 14 includes a shaft tube member 240 (see FIG. 4), a fixing ring 241 (see FIG. 5), a sealing O-ring 242 (see FIG. 6), and a fixed sealing ring. 243 (see FIG. 7), socket 244 (see FIG. 8), taper screw conversion plug 245, and joint plug portion 246. A plurality of replaceable discharge air free sockets 214 for supplying air used for easily discharging the cooling water 20 in accordance with the inlet side of the hole 102 through which the cooling fluid passes through the nest 110 have the same configuration. .
The front end portion 247 of the shaft tube member 240 is manufactured in accordance with the water pipe diameter (φ6 to φ12) on the inlet side or the outlet side of the hole 102 formed in the side surface of the nest 110 shown in FIG. 248 is matched with the inner diameter screw (M3 to M6) 250 of the socket 244. Thereby, exchange of a water pipe diameter can be performed easily.
Further, a fixing portion 251 that is bent between a socket 244 that forms a tapered female screw portion 253 that fits with the shaft tube member 240, a fixing ring 241 that forms a notched opening / closing portion 252, and a sealing O By using the ring 242 and the collar-shaped fixed sealing ring 243, the cooling water 20 between the inlet side or the outlet side of the hole 102 formed in the side surface of the free socket 14 and the insert 110 and the water flow port 249 is used. Leakage can be prevented.
Accordingly, the fixing ring 241 and the sealing O-ring 242 sandwich the fixing sealing ring 243, and leakage of the cooling water 20 from this portion can be prevented. Furthermore, it can be easily assembled with few parts.
The free socket 14 is attached to the insert 110 by loosening the shaft tube member 240 in advance and inserting it into the entrance side or the exit side of the hole 102 formed in the side surface of the insert 110 and turning it. The leakage of the cooling water in the nest 110 can be detected using the discharge tank 5.
Further, an identification display unit 13 for identifying various free sockets is attached to the outer periphery of the socket 244.

FIG. 9 is a perspective view showing the basic configuration of the fluid pressure supply means 3 of the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 9, the fluid pressurizing and supplying means 3 includes a water pressure pump 30, a supply pipe 31, a water pressure gauge 32 that measures the water pressure in the supply pipe 31, a water supply tank 33 that stores and replenishes cooling water 20, and a supply pipe 31. Opening and closing levers 34 and 35 for opening and closing are formed.
The water supply tank 33 opens and closes the open / close lid 37 to store and replenish the cooling water 20 for detecting the leakage of the cooling fluid. The water supply tank 33 supplies the cooling water 20 to the pressure lever 36 of the hydraulic pump 30. By moving up and down in the direction of the arrow (C) shown in the drawing, the cooling water 20 is passed through the supply pipe 31 and the inlet side communication means 1 into the injection mold 100 (not shown) or into the single nest 110, The water pressure is increased by the pressure lever 36 until the set value is reached, and then the open / close levers 34 and 35 are closed.
Thus, leakage of the cooling water 20 can be detected if the cooling water 20 under pressure is left in the injection mold 100 or the single insert 110 for several minutes.
Therefore, since the water pressure gauge 32 is used, the pressure setting of the water pressure in the supply pipe 31 can be freely set. Further, since the water supply tank 33 and the open / close levers 34 and 35 are used, the water amount and the water pressure of the cooling water 20 can be easily adjusted.

FIG. 10 is a perspective view showing a basic configuration of the discharge tank 5 of the cooling fluid leak detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 10, the configuration of the discharge tank 5 includes a recovery pipe 50 that collects the cooling water 20 discharged from the outlet side communication means 4 and stores it in the discharge tank 5, an open / close lever 51 that opens and closes the recovery pipe 50, and the discharge tank 5 It consists of a discharge port 52 through which the recovered cooling water 20 is discharged.
The discharge tank 5 drains the cooling water 20 injected into an injection mold 100 (not shown) or a single nest 110.
The use method of the discharge tank 5 is that of the outlet side communication means 4 that discharges the cooling water 20 in communication with an outlet side pipe 101 or a hole 102 through which the cooling fluid passes through an injection mold 100 or a single nest 110 (not shown). The joint socket 12 communicating with the collection pipe 50 is connected to the joint plug 11 or the free socket 14 to open the opening / closing lever 51.
Next, the exhaust air joint plug 213 shown in FIG. 14 of the inlet side communication means 1 or the hole 102 for passing the cooling fluid through the injection mold 100 or the single nest 110 (not shown) or the hole 102 is shown in FIG. The exhaust air free socket 214 shown in FIG. 6 is connected, and air is injected in the direction of the arrow (D) shown in the figure from the joint plug part 222 or the joint plug part 246 at each rear end, thereby allowing the injection mold 100 or a single nesting. The cooling water 20 in 110 can be easily discharged.
And since the discharge tank 5 is provided with the discharge port 52, the leakage of the cooling fluid in the injection mold 100 or the single nest 110 can be detected and can be disposed of easily after confirmation. Corrosion of the hole 102 can also be prevented.

FIG. 11 is an enlarged view showing various pipe joint plugs 210 of the cooling fluid leakage detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 11, the joint plugs 210 for various pipes of the inlet side communication means 1 and the outlet side communication means 4 are exchanged in accordance with a plurality of diameters on the inlet / outlet side of the pipe 101 through which the cooling fluid is passed through the side surface of the injection mold 100. Is possible.
The various pipe joint plugs 210 are composed of three parts: a joint part 220 with an identification display part 13 for various water pipes, a taper screw conversion plug 221 and a joint plug part 222. By exchanging the joint plugs 210 for various pipes, it is possible to cope with the pipes 101 through which the cooling fluid passes through the side surfaces of various injection molds 100.
The usage method is that the joint portion 220 of the joint plug 210 for various pipes of the inlet side communication means 1 and the outlet side communication means 4 is attached to the inlet / outlet side of the pipe 101 through which the cooling fluid is passed through the side surface of the injection mold 100 to add fluid. The leakage of the cooling fluid passing through the injection mold 100 can be detected using the pressure supply means 3, the discharge water tank 5, and the like.
Therefore, for connection with the injection mold 100, since various pipe joint plugs 210 are provided in accordance with the diameter of the inlet and outlet of the pipe 101, they can be easily detached and passed through the injection mold 100. Cooling fluid leak detection becomes easy.

FIG. 12 is an enlarged view showing the core side joint plug 211 of the cooling fluid leakage detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 12, the core side joint plug 211 of the inlet side communication means 1 and the outlet side communication means 4 is exchanged in accordance with the diameter of the inlet / outlet side of the pipe 101 through which the cooling fluid passes through the core side of the injection mold 100. Is possible.
The core-side joint plug 211 includes three parts, which are the green core-side joint portion 220, the taper screw conversion plug 221, and the joint plug portion 222 as the identification display portion 13.
The usage method is that the inlet side communication means 1 and the joint portion 220 of the core side joint plug 211 of the outlet side communication means 4 are provided on the inlet / outlet side of the pipe 101 through which the cooling fluid passes through the side surface on the core side of the injection mold 100. The leakage of the cooling fluid passing through the core side of the injection mold 100 can be detected by using the fluid pressurizing and supplying means 3, the discharge water tank 5, and the like.
Accordingly, for the connection with the core side of the injection mold 100, the core side joint plug 211 that facilitates identification management according to the diameter of the inlet / outlet of the tube 101 is provided, so that it can be easily detached. Thus, it becomes easy to detect the leakage of the cooling fluid passing through the core side of the injection mold 100.

FIG. 13 is an enlarged view showing the cavity side joint plug 212 of the cooling fluid leakage detection device 10 for the injection mold according to the embodiment of the present invention.
In FIG. 13, the cavity side joint plug 212 of the inlet side communication means 1 and the outlet side communication means 4 is exchanged according to the diameter of the inlet / outlet side of the pipe 101 through which the cooling fluid passes through the cavity side of the injection mold 100. Is possible.
The cavity side joint plug 212 is composed of three parts including a red cavity side joint part 220, a taper screw conversion plug 221, and a joint plug part 222 as the identification display part 13.
The usage method is that the joint portion 220 of the cavity side joint plug 212 of the inlet side communication means 1 and the outlet side communication means 4 is provided on the inlet / outlet side of the pipe 101 through which the cooling fluid passes through the side surface of the injection mold 100 on the cavity side. The leakage of the cooling fluid passing through the cavity side of the injection mold 100 can be detected by using the fluid pressurizing supply means 3, the discharge water tank 5, and the like.
Therefore, for the connection with the cavity side of the injection mold 100, the cavity side joint plug 212 that facilitates identification management according to the diameter of the inlet / outlet of the tube 101 on the cavity side is provided. Desorption is possible, and it becomes easy to detect leakage of the cooling fluid passing through the cavity side of the injection mold 100.

FIG. 14 is an enlarged view showing a discharge air joint plug 213 of the cooling fluid leakage detection device 10 for an injection mold according to the embodiment of the present invention.
In FIG. 14, the exhaust air joint plug 213 of the inlet side communication means 1 can be replaced in accordance with a plurality of diameters on the inlet side of the pipe 101 through which the cooling fluid passes through the side surface of the injection mold 100.
The configuration of the exhaust air joint plug 213 includes three parts: a joint portion 220 provided with an identification display portion 13 for exhaust air of various water pipes, a taper screw conversion plug 221 and a joint plug portion 222 for exhaust air. By replacing the exhaust air joint plug 213, it is possible to cope with the pipe 101 through which the cooling fluid passes through the side surfaces of various injection molds 100.
As a method of use, the exhaust air joint plug 213 of the inlet side communication means 1 is attached to the inlet side of the pipe 101 through which the cooling fluid passes through the side surface of the injection mold 100.
Next, the discharge tank 5 is attached through the outlet side communication means 4 to the outlet side of the pipe 101 through which the cooling fluid passes through the side surface of the injection mold 100, and the arrow shown in the figure from the joint plug portion 222 of the discharge air joint plug 213. The cooling water 20 in the injection mold 100 is discharged by injecting air in the direction (D).
Therefore, the cooling water 20 accumulated in the water circuit such as the pipe 101 through which the cooling fluid of the injection mold 100 passes can be easily removed, and corrosion of the pipe 101 etc. can be prevented.

The perspective view which shows the basic composition of the state which confirms the leakage of the cooling fluid of the injection mold of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The perspective view which shows the basic composition of the state which confirms the leakage of the cooling fluid of the nesting of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the basic composition of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the basic composition of the shaft tube member of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the ring for fixation of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the O-ring for sealing of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The expansion perspective view which shows the ring for fixed sealing of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the socket of the free socket in the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The perspective view which shows the basic composition of the fluid pressurization supply means of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The perspective view which shows the basic composition of the discharge tank of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the joint plug for various pipes of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the joint plug for core sides of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the joint plug for cavity side of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention. The enlarged view which shows the joint plug for exhaust air of the cooling fluid leak detection apparatus of the injection mold concerning the embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inlet side communication means, 2 fluids, 3 fluid pressurization supply means, 4 Outlet side communication means, 5 Discharge tank, 10 Cooling fluid leak detection device of injection mold, 11 Joint plug, 12 Joint socket, 13 Identification display , 14 Free socket, 20 Cooling water, 30 Water pressure pump, 31 Supply pipe, 32 Water pressure gauge, 33 Water tank, 34, 35 Open / close lever, 36 Pressure lever, 37 Open / close lid, 50 Recovery pipe, 51 Open / close lever, 52 Drain Outlet, 100 Injection mold, 101 pipe, 102 holes, 110 nesting, 210 Joint plug for various pipes, 211 Core side joint plug, 212 Cavity side joint plug, 213 Exhaust air joint plug, 214 Exhaust air free Socket, 220 joint, 221 taper screw Conversion plug, 222 Joint plug part, 240 Shaft tube member, 241 Fixing ring, 242 Sealing O-ring, 243 Fixing seal ring, 244 Socket, 245 Taper screw conversion plug, 246 Joint plug part, 247 Tip part, 248 Rear end Part, 249 water inlet, 250 inner diameter screw (M3 to M6), 251 fixing part, 252 opening / closing part, 253 taper female screw part

Claims (26)

  An injection mold cooling fluid leak detecting device for detecting leakage of cooling fluid passing through an injection molding die, inlet side communication means communicating with an inlet side for passing cooling fluid through the injection molding die, and the inlet Fluid pressurizing and supplying means for pressurizing and supplying a fluid to the side communication means; and the fluid supplied from the fluid pressurizing and supplying means communicates with the outlet side through which the cooling fluid is passed through the injection mold and is discharged. And a discharge tank for storing the fluid discharged from the outlet side communication means, and a cooling fluid leak detection device for an injection mold.   2. The injection mold cooling fluid leak detection device according to claim 1, wherein the inlet side communication means includes a joint plug communicating with an inlet side of a pipe through which the cooling fluid passes through a side surface of the injection mold. And a joint socket communicating with a supply pipe for supplying the fluid from the fluid pressure supply means fitted to the joint plug or an air supply source for discharging the fluid. Type cooling fluid leak detection device.   The cooling fluid leak detection device for an injection mold according to claim 2, wherein the joint plug is replaceable in accordance with an inlet side of the pipe through which the cooling fluid passes through a side surface of the injection mold. An apparatus for detecting leakage of cooling fluid in an injection mold, comprising a joint plug for various pipes.   The cooling fluid leak detection device for an injection mold according to claim 2 or 3, wherein the joint plug is matched with an inlet side of the pipe through which the cooling fluid is passed to a core side of the injection mold. A cooling fluid leak detection device for an injection mold, comprising a side joint plug.   5. The cooling fluid leak detection device for an injection mold according to claim 2, 3 or 4, wherein the joint plug is aligned with an inlet side of the pipe through which the cooling fluid is passed to a cavity side of the injection mold. A cooling fluid leak detection device for an injection mold, comprising a cavity side joint plug.   6. The injection mold cooling fluid leakage detection device according to claim 2, wherein the joint plug is configured to discharge air for discharging cooling water in accordance with an inlet side of the injection mold. A cooling fluid leak detection device for an injection mold, comprising a plurality of exchangeable exhaust air joint plugs to be supplied.   7. The injection molding cooling fluid leak detection device according to claim 2, wherein the joint plug includes an identification display unit for identifying various joint plugs. Cooling fluid leak detection device for mold.   The cooling fluid leak detection device for an injection mold according to claim 1, wherein the inlet side communication means includes a free socket that communicates with an inlet side of a hole through which the cooling fluid passes through a nesting of the injection mold. The injection socket comprising: the joint socket communicating with the supply pipe for supplying the fluid from the fluid pressure supply means fitted to the free socket or the air supply source for discharging the fluid. Cooling fluid leak detection device for mold.   9. The cooling fluid leak detection device for an injection mold according to claim 8, wherein the free socket is exchangeable in accordance with an inlet diameter of the hole through which the cooling fluid is inserted into a nest of the injection mold. A cooling fluid leak detection device for an injection mold, characterized by comprising:   10. The cooling fluid leakage detection device for an injection molding die according to claim 8 or 9, wherein a tip of the free socket has a fixing ring and a sealing O between the shaft tube member and a socket to be fitted. A cooling fluid leak detection device for an injection mold, comprising: a ring; and a ring for fixed sealing.   11. The cooling fluid leak detection device for an injection molding die according to claim 8, 9 or 10, wherein the free socket is configured to discharge air that discharges the fluid in accordance with an inlet side of a hole through which the cooling fluid passes. A cooling fluid leak detection device for an injection mold, comprising a plurality of exchangeable free air free sockets to be supplied.   12. The injection molding cooling fluid leakage detection device according to claim 8, wherein the free socket includes an identification display unit for identifying various free sockets. Cooling fluid leak detection device for mold.   The cooling fluid leak detection device for an injection mold according to any one of claims 1 to 12, wherein the fluid is cooling water. .   14. The injection mold cooling fluid leak detection device according to claim 1, wherein the fluid pressurizing supply means includes a hydraulic pump. Fluid leak detection device.   15. The cooling fluid leak detection device for an injection mold according to claim 14, wherein the hydraulic pump includes a water pressure gauge for measuring a water pressure in the supply pipe. Detection device.   16. The cooling fluid leak detection device for an injection mold according to claim 14 or 15, wherein the water pressure pump includes a water supply tank that stores and replenishes cooling water, and an open / close lever that opens and closes the supply pipe. A cooling fluid leak detection device for an injection mold characterized by the above.   The injection fluid cooling device for an injection mold according to any one of claims 1 to 16, wherein the outlet side communication means is configured to pass the cooling fluid through a side surface of the injection mold. The cooling of the injection mold, comprising: the joint plug communicating with the outlet side; and the joint socket communicating with the recovery pipe for collecting the fluid in the discharge tank fitted to the joint plug. Fluid leak detection device.   18. The cooling fluid leak detection device for an injection mold according to claim 17, wherein the joint plug is replaceable in accordance with an outlet side of the pipe through which the cooling fluid passes through a side surface of the injection mold. An apparatus for detecting a cooling fluid leakage of an injection mold, comprising the joint plug for various pipes.   The cooling fluid leak detection device for an injection mold according to claim 17 or 18, wherein the joint plug is aligned with an outlet side of the pipe through which the cooling fluid is passed to a core side of the injection mold. A cooling fluid leakage detection device for an injection mold, comprising a core side joint plug.   20. The injection mold cooling fluid leak detection device according to claim 17, 18 or 19, wherein the joint plug is aligned with an outlet side of the pipe through which the cooling fluid is passed to a cavity side of the injection mold. A cooling fluid leak detection device for an injection mold, comprising a cavity side joint plug.   21. The injection fluid cooling device for an injection mold according to any one of claims 17 to 20, wherein the joint plug includes the identification display unit for identifying various joint plugs. Cooling fluid leak detection device for molding dies.   The cooling fluid leak detection device for an injection mold according to claim 1, wherein the outlet side communication means communicates with an outlet side of the hole through which the cooling fluid passes through the insert of the injection mold. A cooling fluid leak detection device for an injection mold, comprising: a free socket; and the joint socket communicating with the recovery pipe for recovering the fluid in the discharge tank fitted to the free socket.   23. The apparatus for detecting cooling fluid leakage in an injection mold according to claim 22, wherein the free socket has a plurality of replacements in accordance with an outlet diameter of the hole through which the cooling fluid passes through the insert of the injection mold. An apparatus for detecting a cooling fluid leakage of an injection mold, comprising the shaft tube member that can be used.   24. The cooling fluid leak detection device for an injection mold according to claim 22 or 23, wherein a tip end portion of the free socket is interposed between the socket for fitting with the shaft tube member, and the fixing ring; A cooling fluid leak detection device for an injection mold, comprising: an O-ring for sealing; and the ring for stationary sealing.   The injection molding die according to any one of claims 1 to 24, wherein the discharge tank includes an open / close lever that opens and closes the recovery pipe. Type cooling fluid leak detection device.   26. The cooling fluid leak detection device for an injection mold according to claim 1, wherein the discharge tank includes a discharge port for discharging the recovered fluid. Mold cooling fluid leak detection device.

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