JPH1058452A - Cooling-water supplying manifold for metal mold and cooling-water recovering manifold for metal mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep pressures in the vicinities of a plurality of cooling-water outlet ports uniform, to stabilize the accuracy of the sizes of a molded product and to ensure high dimension accuracy in a cooling-water supplying manifold for supplying the cooling water to a metal mold. SOLUTION: The cooling water, which flows in from an inlet port 8, is made to collide head-on against a tip 23 of a main pipe 21, a tip 25 of a first branched pipe 24 and a tip 27 of a second branched pipe 26. Furthermore, the cooling water, which is discharged from a discharge opening 30, is made to collide head-on against a bottom surface 29. Thus, the inertia of the water flow is dispersed. The tips 25 of the first branched pipes 24 and the second branched pipes 26 have the same length and the same inner diameter, and the dynamic pressure and the static pressure of the cooling water are made uniform in a manifold main body 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold cooling water supply manifold and a mold cooling water recovery manifold in plastic molding.

[0002]

A mold for a plastic molding machine is provided with a cooling water circuit for cooling.
Water is supplied to the cooling water circuit from a cooling water supply manifold to cool the mold and maintain the mold at a predetermined temperature to perform molding, and the cooling water supplied to the mold is recovered to a cooling water recovery manifold. It has become.

In recent years, the shape of molded plastic products has become complicated, high dimensional accuracy has been required, and a plurality of cavities are provided in one die for cost reduction. Higher dimensional accuracy is required. In order to stabilize the dimensional accuracy of such a molded product and secure high dimensional accuracy, temperature control of the mold plays an important role.

A plurality of cooling water circuits are provided for cooling a complicated and highly accurate mold as described above, and the pressure loss is not uniform in each of such cooling water circuits, and the required cooling water is supplied. Need to be able to secure.

Conventionally, the supply of cooling water to a cooling system of a mold having a plurality of cooling water circuits has been performed by a simple branch pipe or a manifold. However, as described above, as the size of the mold is increased and the temperature control with high accuracy is performed, the flow rate of the cooling water also becomes large, so that the flow of the cooling water causes the pressure balance to be lost at the cooling water outlet. ,
As a result, there is a problem that the flow rate balance to the mold is lost. In particular, there is a problem that a mold having a large number of cavities, which is a functional component requiring high precision, cannot be coped with by conventional cooling.

As a means for solving such a problem, FIGS. 1 and 2 of Japanese Utility Model Laid-Open Publication No. 6-70952 show a straightening plate provided inside a manifold having a cooling water outlet and a hole formed in the straightening plate. The distance between the holes is reduced near the inflow port of the current plate, and the distance between the holes is increased on the opposite side. A mold cooling water supply manifold for equalizing port pressure is disclosed. FIGS. 3 and 4 of the above publication show that a variable plate having a hole formed so as to be adjustable in angle so as to face the inflow port is provided inside the manifold having the cooling water discharge port so that the inflow port can be disposed from the inflow port. A cooling water supply manifold of a mold is disclosed which makes the static pressure of each cooling water outlet uniform by increasing the flow rate as the distance increases.

[0007] However, in the above-mentioned prior art in which the difference in the opening area due to the hole of the current plate is used, the water flow flowing from the inlet once collides with the inner wall facing the inlet of the cooling water supply manifold. From the cooling water outlet through the holes of the flow straightening plate, but the high pressure occurs in the vicinity of the inner wall facing the inlet in the manifold due to the collision, while the pressure is reduced by the Venturi effect in the vicinity of the inlet. As a result, the pressure in the manifold becomes non-uniform, and the inertial force of the water flow flowing from the inlet cannot be completely eliminated. In addition, after the collision, the pressure is made uniform through the holes in the current plate, and the cooling water is taken out from the outlet, so it is necessary to increase the resistance when passing through the holes, and as a result, the pressure loss increases. There were also problems. Further, in the prior art in which the variable plate is obliquely provided so as to be adjustable in angle, the inertia of the water flow is completely eliminated since the variable plate is obliquely provided in the direction of the water flow flowing from the inlet. In addition, there is a problem that the pressure loss increases due to the holes in the variable plate.

The cooling water recovered from the cooling water circuit of the mold has conventionally been made by a simple pipe or a manifold. Since such a cooling water recovery device recovers using the pressure difference between the cooling water circuit and the recovery side, the flow rate of the cooling water in the cooling water circuit, and thus the flow rate, is increased on the cooling water recovery side itself. Therefore, there is no limit to the flow rate of the cooling water circuit.

In view of the above, the present invention solves the above-mentioned problems, and can maintain the pressure in the vicinity of each cooling water outlet of the manifold in a steady state of use equal, and further, the cooling water due to a change in the environment in which the mold is used. Even if the primary pressure and flow rate change, the conditions for keeping the pressure equal can be maintained, and
It is an object of the present invention to provide a mold cooling water supply manifold capable of maintaining the same pressure even when the primary pressure and the flow rate are positively increased and decreased. Another object of the present invention is to provide a mold cooling water recovery manifold that can increase the flow rate of cooling water in a mold cooling water circuit.

[0010]

SUMMARY OF THE INVENTION The present invention provides a cooling water supply manifold body, a plurality of cooling water outlets for supplying cooling water to a cooling water circuit of a mold, and a plurality of cooling water outlets, respectively. A cooling water passage for discharging cooling water introduced from an inlet into the cooling water supply manifold body through a discharge port; a cooling water frontal collision part is provided in the middle of the cooling water passage; and the front collision part has the same length. A cooling water supply manifold of a mold, characterized by connecting branch water passages of the same width, and by colliding cooling water with a frontal collision portion in the cooling water passage, the inertia of the cooling water is dispersed, Further, the cooling water is supplied to the cooling water supply manifold body at a constant pressure and a constant flow rate from the discharge port via the branch water channel, and the vicinity of the plurality of cooling water discharge ports can be made in a uniform pressure state.

[0011] The present invention also provides a cooling water recovery manifold body, a plurality of cooling water recovery ports for recovering cooling water from a cooling water circuit of a mold, an outlet for discharging cooling water, and an outlet for the cooling water. A cooling water recovery manifold for a mold, comprising: a nozzle for water jetting, the tip of which faces the outflow direction of the outlet, wherein water is jetted from the nozzle toward the outlet. Thereby, the flow rate of the cooling water in the cooling water circuit of the mold can be increased by drawing the cooling water in the cooling water recovery manifold body to the outlet.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a fixed mold of a molding apparatus, 2 denotes a movable mold, and a molten resin is filled in a cavity (not shown) formed between the fixed mold 1 and the movable mold 2. The mold is formed by filling, and then the movable mold 2 is retracted to open the mold and take out the molded product. A plurality of cooling water circuits 3 are provided on the fixed mold 1 side according to the shape of the cavity.
The primary side of the cooling water circuit 3 is connected to a cooling water supply manifold 5 via a pipe 4. On the other hand, cooling water circuit 3
The secondary side of the cooling water recovery manifold 7 is connected via a pipe 6
Connected to A cooling water supply pipe 9 is connected to an inlet 8 of the cooling water supply manifold 5, and a communication pipe 12 is connected between an outlet 10 of the cooling water supply manifold 5 and an inlet 11 of the cooling water recovery manifold 7. A drain pipe 14 is connected to the outlet 13 of the cooling water recovery manifold 7.
The primary side of the cooling heat exchanger 15 is connected to the cooling water supply manifold 5 via a pump 16 and a cooling water supply pipe 9 to the secondary side of the heat exchanger 15. Therefore, the cooling water can circulate through the cooling water supply manifold 5, the cooling water circuit 3, the cooling water recovery manifold 7, and the cooling heat exchanger 15 to cool the fixed mold 1 side.
Further, a part of the cooling water in the cooling water supply manifold 5 becomes excess and flows into the cooling water recovery manifold 7 through the communication pipe 12.

As shown in FIG. 2, the cooling water supply manifold 5 is provided with an inlet 8 for connecting a cooling water supply pipe 9 on one side of a box-shaped cooling water supply manifold body 17, and a pipe on the upper surface. Cooling water outlet for connecting 4
18 are provided. In FIG. 2, reference numeral 19 denotes a flow control valve provided on each of the pipes 4, and reference numeral 20 denotes a flow meter. A base end 22 of a main pipe 21 which is a part of a cooling water channel provided inside the cooling water supply manifold main body 17 is connected to the inflow port 8. The distal end 23 of the main pipe 21 serves as a frontal collision portion of the cooling water and serves as a manifold body.
It is located in the approximate center of 17. And at the tip 23, the tip
A pair of first branch pipes 24 which form a branch water passage which is a part of the cooling water passage in the front-rear direction perpendicular to the direction 23 is connected to each pair. The first branch pipes 24 have the same length, the same width, and the same inner diameter. Further, the distal end 25 of the first branch pipe 24 is a frontal collision portion of the cooling water, and forms a branch waterway that is a part of the cooling waterway in the left-right direction orthogonal to the direction of the distal end 25, respectively. Are connected. The second branch pipes 26 have the same length, the same width, and the same inner diameter. A tip 27 of the second branch pipe 26 is a frontal collision portion of the cooling water, and a short pipe 28 that is orthogonal to the tip 27 and faces downward is connected.
As a result, a discharge port 30 facing the bottom surface 29 of the manifold body 17 at an interval is provided.

As shown in FIG. 3, a cooling water collecting manifold 7 is provided with a nozzle in a box-shaped cooling water collecting manifold body 31.
32 are provided. The nozzle 32 has a base end 33 connected to the inflow port 11 provided on one side of the collection manifold body 31. The tip 34 of the nozzle 32 faces the outlet 13 provided on the other side of the recovery manifold body 31. In addition, the outlet
A cylindrical body 35 is provided from 13 toward the inside of the recovery manifold body 31, and an inner peripheral surface 36 of the cylindrical body 35 is formed so as to gradually increase in diameter toward the tip 36A side,
The tip 33 faces the center of the inner peripheral surface 36. A plurality of cooling water recovery ports 37 to which the pipe 6 is connected are formed on the upper surface of the recovery manifold body 31.

Therefore, the cooling water flowing from the inflow port 8 passes through the main pipe 21 and then collides head-on in the pipe at the tip 23, that is, collides with the tip 23 located directly in front of the water flow direction, and is then split into two parts. At this time, since the cooling water is almost equally divided and distributed after the frontal collision in the pipe at the tip 23,
The inertia of the cooling water from the inflow port 8 is substantially evenly distributed. Next, the cooling water passes through the first branch pipe 24 and reaches the distal end 25 side. Here, the cooling water is bisected after a frontal collision again in the pipe at the tip 25. In this case, too, the cooling water is almost equally divided and distributed after the frontal collision in the pipe at the tip 25,
The inertia of the cooling water from the first branch pipe 24 is substantially evenly distributed. Next, the cooling water reaches the tip 27 side through the second branch pipe 26. Here, the cooling water flowing out of the outlet 29 through the short pipe 28 after the frontal collision in the pipe at the tip 27 again fills the manifold body 17 after the frontal collision with the bottom surface 29. Even when the front surface collides with the bottom surface 29, the inertial force of the cooling water is substantially uniformly dispersed. In this way, the cooling water flowing from the inflow port 8 is almost uniformly dispersed from the four discharge ports 30 to fill the manifold body 17 and then agitate the inside of the manifold body 17. For this reason, in the manifold body 17 filled with the cooling water, the cooling water is in an equal pressure state in the vicinity of the plurality of cooling water outlets 18, and therefore, the cooling water is stabilized from the cooling water outlet 18 to the cooling passage 3. The movable mold 2 can be supplied and cooled.

On the other hand, the cooling water discharged from the cooling passage 3 is recovered by the recovery manifold body 31 through the pipe 6 and the cooling water recovery port 37, and is discharged from the outlet 13 to the cooling heat exchanger 15.
Drained to At this time, when the excess cooling water in the cooling water recovery manifold 7 is jetted from the nozzle 32 toward the cylinder 35 through the communication pipe 12, the tip 34 of the nozzle 32 and the cylinder 35
A negative pressure is generated between the cooling water and the inner peripheral surface 36, and the cooling water filled in the collecting manifold body 31 and, consequently, the cooling water collected from the cooling water collecting port 37 are sucked and then passed through the cylindrical body 35. From the outlet 13.

As described above, in the above-described embodiment, in the cooling water supply manifold 5, the cooling water flowing from the inflow port 8 passes through the main pipe 21 and collides with the front end 23 thereof, and the first branch pipe 24 The front end of the cooling water collides with the front end 25 of the second branch pipe 26, the front end of the cooling water collides with the front end 27 of the second branch pipe 26, and the front end of the cooling water discharged from the discharge port 30 collides with the bottom surface 29. Each of the frontal collisions, that is, the tip 23, the tip 25, the tip 27 and the bottom face 29 located directly in front of the direction of the water flow
Thus, the inertia of the water flow is dispersed. Moreover, after colliding with the tip 23, the cooling water is supplied to the first branch pipe having the same length and the same inner diameter.
Thus, the cooling water after the collision receives the same pipe resistance at the same flow velocity in each of the first branch pipes 24. Similarly, the second branch pipe 26 and the short pipe 28 similarly receive the same pipe resistance at the same flow velocity,
The cooling water at each discharge port 30 is supplied to the manifold body 17 under the same dynamic pressure and static pressure. Therefore, the outlet
By stirring the inside of the manifold body 17 with the cooling water discharged from the 30, the dynamic pressure and the static pressure at all points in the manifold body 17, and furthermore, at the respective cooling water outlets 18 can be equalized. Therefore, the pressure in the vicinity of each cooling water outlet 18 of the manifold body 17 in the steady use state can be kept equal. Further, even if the primary pressure and the flow rate of the cooling water from the inlet 8 are changed due to the change in the environment in which the molds 1 and 2 are used, the primary pressure and the flow rate are reduced by the frontal collision of the cooling water. The pressure in the manifold body 17 can be kept equal. Even if the primary pressure and the flow rate at the inflow port 8 are positively increased or decreased, the pressure in the manifold body 17 can be kept equal.

Further, the discharge port 30 is provided so as to face the bottom surface 29, and the cooling water discharged from the discharge port 30 collides with the bottom surface 29 in a frontal direction, so that the cooling water is directed in the entire circumferential direction into the manifold body 17. Can be one layer manifold body
The static pressure and dynamic pressure of the cooling water in 17 can be made uniform.

In addition, the main pipe 21, the first branch pipe 24, the second branch pipe 26, and the short pipe 28 are provided, and the inertia of the cooling water is reliably dispersed by colliding the cooling water four times. Can be.

Further, in the cooling water recovery manifold 7, a plurality of cooling water recovery ports 37 for recovering the cooling water from the cooling water circuit 3 of the mold 1, and a flow for draining the cooling water in the cooling water recovery manifold body 31. The outlet 13 and the outlet 13
Nozzle 32 for jetting water with its tip facing the outflow direction of 13
By jetting excess cooling water from the cooling water supply manifold 5 toward the outlet 13 through the nozzle 32, a negative pressure is generated at the jetting point, and the cooling water recovery manifold is generated by the negative pressure. The cooling water in the main body 31 and thus the cooling water circuit 3 can be drawn into the outlet 13 and drained. Thereby, a larger amount of cooling water can be supplied to the cooling water circuit 3.

Further, by supplying excess cooling water of the cooling water supply manifold 5 to the nozzle 32 through the communication pipe 12, cooling water of the cooling water supply manifold 5 in a high pressure state is supplied to the nozzle 32. Therefore, there is no waste in the circulating cooling water.

Further, the outlet 13 is provided with a cylindrical body 35 having an inner peripheral surface 36 whose diameter gradually increases toward the distal end 36A, and the distal end 34 of the nozzle 32 is moved toward the center of the inner peripheral surface 36. With the provision, the cooling water in the cooling water recovery manifold main body 31 can be reliably drained.

FIGS. 4 to 7 show the second to fifth embodiments of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. I do. In the second embodiment shown in FIG. 4, the front end 23A of the main pipe 21A, which is connected to the inflow port 8A and is a part of the cooling water passage provided substantially at the center of the manifold body 17A, becomes the front collision portion of the cooling water, and faces downward. An arc-shaped short tube 41A is connected so that
A first branch pipe 24A forming a branch waterway, which is a part of the cooling waterway, is connected to a lower end 42A on the side of the frontal collision portion of 41A. The first branch pipe 24A is horizontal from the lower end portion 42A of the short pipe 41A and is directed in all directions. The first branch pipes 24A provided in these four sides have the same length, the same width, and the same inner diameter. Have. A downward short pipe 28A is connected to a distal end 27A of a first branch pipe 24A serving as a front collision portion of the cooling water, and a discharge port 30A is provided opposite to a bottom face 29A of the manifold body 17A at an interval.

Therefore, the cooling water flowing in from the inflow port 8 passes through the main pipe 21A, and then collides head-on at the tip 23A, that is, collides with the tip 23A located directly in front of the water flow direction. Due to this head-on collision, the inertia of the cooling water from the inflow port 8 is substantially uniformly dispersed, and the inertia of the water flow is dispersed. After this short tube
At the lower end portion 42A side of 41A, that is, at the connecting portion between the lower end portion 42A and the first branch pipe 24A, the cooling water collides head-on, and thereafter flows through the first branch pipe 24A to be divided into four equal parts. At this time, the cooling water is almost equally divided and distributed after the frontal collision at the lower end portion 42A side, and the inertia of the cooling water from the short pipe 41A is almost uniformly dispersed. Next, the cooling water passes through the first branch pipe 24A and further collides head-on at the tip 27A to suppress the inertia of the cooling water, and is discharged from the discharge port 30A through the short pipe 28A. Also at the time of this discharge, the inertia of the cooling water is substantially uniformly dispersed by the frontal collision of the cooling water with the bottom surface 29A.
The cooling water discharged in all four directions is supplied to the manifold body 17
Fill A and stir the inside. For this reason, the cooling water is in an equal pressure state inside the manifold body 17A filled with the cooling water, and thus near the plurality of cooling water outlets 18, so that the cooling water can be supplied from the cooling water outlet 18 in a stable state.

As described above, in the second embodiment, since the first branch pipe 24A is connected to the distal end 23A of the main pipe 21A via the short pipe 41A in all directions, the cooling water flowing from the inflow port 8A is cooled by the distal end 23A. After the inertia force of the cooling water is dispersed by the frontal collision at the lower end portion 42A of the short pipe 41A, the first pipe having the same length and the same inner diameter, that is, receiving the same pipe resistance at the same flow rate, is obtained.
Flows through the branch pipe 24A and is discharged from the discharge port 30A.
The cooling water at each discharge port 30A is supplied to the manifold body 17A under the same dynamic pressure and static pressure. Therefore, by stirring the inside of the manifold body 17A with the cooling water discharged from the discharge port 30A, the manifold body 17A is cooled.
Every place in A, and each cooling water outlet
The dynamic pressure and the static pressure at 18 can be made equal, and the pressure near each cooling water outlet 18 in the steady use state can be kept equal. Furthermore, even if a change in the primary pressure and flow rate of the cooling water from the inlet 8A due to a change in the environment in which the mold is used occurs, the change in the primary pressure and the flow rate can be mitigated by the frontal collision of the cooling water, and positively. Even if the primary pressure and flow rate at the inlet 8A are increased or decreased, the pressure in the manifold body 17A can be kept equal.

Further, since the discharge port 30A is provided so as to face the bottom surface 29A, the cooling water discharged from the discharge port 30A collides head-on with the bottom surface 29A, and the manifold body 17A
The cooling water can be directed in the entire circumferential direction, and the static pressure and the dynamic pressure of the cooling water in the manifold body 17A can be made more uniform.

In the third embodiment shown in FIG.
A short pipe 41B is connected downward to the front end 23B of the main pipe 21B, which is a part of a cooling water passage provided substantially at the center of the manifold main body 17B, which is a front collision portion of the cooling water. The first branch pipe 24 that forms a branch waterway, which is a part of the cooling water channel, at the lower end portion 42B on the side of the front collision portion of the cooling water.
B is connected. The first branch pipe 24B is a short pipe 41B.
The first branch pipe 24B provided on both sides has the same length, the same width, and the same inner diameter. And the first branch pipe 24B
A branch water channel, which is a part of the cooling water channel, is formed at the tip end 25B serving as a front collision portion of the cooling water so as to be dispersed in two directions.
Are connected so as to be orthogonal to each other, and a tip of the second branch pipe 26B serving as a frontal collision portion of the cooling water is further connected.
A downward short tube 28B is connected to 27B and the discharge port 30B
Are provided facing the bottom surface 29B of the manifold main body 17B at an interval.

Therefore, the cooling water flowing in from the inflow port 8B passes through the main pipe 21B and then collides with the front end 23B at the front end 23B, that is, collides with the front end 23B located directly in front of the water flow direction. Due to this head-on collision, the inertia of the cooling water from the inflow port 8B is almost evenly distributed, and the first branch pipe having the same length and the same inner diameter is used.
The cooling water flows through 24B and is bisected. Further, the cooling water collides head-on at the front end 27B and passes through the second branch pipe 26B having the same length and the same inner diameter in a state where the inertial force is dispersed. The cooling water is supplied to the tip 27B of the second branch pipe 26B having the same length and the same inner diameter.
After a frontal collision again, the outlet 30B passes through the short pipe 28B.
Discharge from. Also at the time of this discharge, the inertia of the cooling water is substantially uniformly dispersed by the frontal collision of the cooling water with the bottom surface 29B. The cooling water discharged in this way is
Fill 17B and stir the inside. For this reason, the cooling water is in an equal pressure state inside the manifold body 17B filled with the cooling water, and furthermore, in the vicinity of the plurality of cooling water outlets 18, and therefore, in a stable state, the cooling water flows from the cooling water outlet 18 into the fixed mold. Can be supplied to

As described above, in the third embodiment, the inertia of the cooling water is substantially uniform by frontal collision at the tip 23B of the main pipe 21B, the lower end 42B of the short pipe 41B, and the tip 27B of the second branch pipe 26B. After being discharged from all sides of the manifold body 17B in a state of being dispersed, the cooling water flowing from the inflow port 8B collides head-on and the inertia of the cooling water is dispersed, and then the cooling water has the same length and the same inner diameter. That is, since the coolant flows through the first and second branch pipes 24B and 26B which receive the same pipe resistance at the same flow rate and is discharged from the discharge port 30B, the cooling water at the respective discharge ports 30B has the same dynamic pressure, Manifold body 17B with static pressure
Supplied to Therefore, by stirring the inside of the manifold main body 17B with the cooling water discharged from the discharge port 30B, every part in the manifold main body 17B,
As a result, the dynamic pressure and the static pressure at the respective cooling water outlets 18 can be equalized, and the pressures near the respective cooling water outlets 18 in the normal use state can be kept equal. Further, even if a change in the primary pressure and flow rate of the cooling water from the inflow port 8B due to a change in the environment in which the mold is used occurs, the change in the primary pressure and the flow rate can be mitigated by the frontal collision of the cooling water, and Even if the primary pressure and the flow rate at the inlet 8B are increased or decreased, the pressure in the manifold body 17B can be kept equal.

Further, since the discharge port 30B is provided so as to face the bottom surface 29B, the cooling water discharged from the discharge port 30B collides head-on against the bottom surface 29B, and the manifold body 17B
The cooling water can be directed in all directions in the inside, and the static pressure and the dynamic pressure of the cooling water in the manifold body 17B can be made more uniform.

In the fourth embodiment shown in FIG.
A short pipe 41C is connected downward so as to face the tip 23C of the main pipe 21C, which is a part of a cooling water channel provided substantially at the center of the manifold body 17C, which is a front collision portion of the cooling water. A first branch pipe 24 that forms a branch waterway, which is a part of the cooling water channel, at the lower end portion 42C on the side of the front collision portion of the cooling water.
C is connected. This first branch pipe 24C is a short pipe 41C.
The first branch pipes 24C provided on both sides have the same length and the same width and the same inner diameter. And the first branch pipe 24C
A second branch pipe that forms a branch waterway that is a part of a cooling waterway so as to be dispersed in two directions at a front end 25C that becomes a frontal collision portion of the second branch pipe.
26C is connected so as to form a Y-shape. Further, a downward short pipe 28C is connected to a front end 27C serving as a frontal collision portion of the second branch pipe 26C, and a discharge port 30C is connected to the bottom surface of the manifold body 17C. It is provided oppositely at an interval at 29C.

Therefore, the cooling water flowing in from the inflow port 8C passes through the main pipe 21C, and then collides with the front end 23C at the front end 23C, that is, collides with the front end 23C located directly in front of the water flow direction. Due to this head-on collision, the inertial force of the cooling water from the inlet 8C is substantially evenly distributed, and the first branch pipe having the same length and the same inner diameter is used.
The cooling water flows through 24C and is bisected. Further, the cooling water collides head-on at the tip 27C and passes through the second branch pipe 26C having the same length and the same inner diameter in a state where the inertial force is dispersed. Cooling water is supplied to the tip 27C of the second branch pipe 26C having the same length and the same inner diameter.
After a frontal collision again, the outlet 30C passes through the short pipe 28C.
Discharge from. Also at the time of this discharge, the inertia of the cooling water is substantially uniformly dispersed by the frontal collision of the cooling water with the bottom surface 29C. The cooling water discharged in this way is
Fill 17C and stir the inside. For this reason, the cooling water is in an equal pressure state inside the manifold body 17C filled with the cooling water, and furthermore, in the vicinity of the plurality of cooling water outlets 18, and therefore, in a stable state, the cooling water flows from the cooling water outlet 18 into the fixed mold. Can be supplied to

As described above, in the fourth embodiment, the inertia of the cooling water is substantially uniform by frontal collision at the tip 23C of the main pipe 21C, the lower end 42C of the short pipe 41C, and the tip 27C of the second branch pipe 26C. After being discharged to the four sides of the manifold body 17C in a dispersed state, the cooling water flowing from the inlet 8C collides head-on and the inertia of the cooling water is dispersed, and then the cooling water has the same length and the same inner diameter. That is, since the cooling water flows through the first and second branch pipes 24C and 26C which receive the same pipe resistance at the same flow velocity and is discharged from the discharge port 30C, the cooling water at the respective discharge ports 30C has the same dynamic pressure, Manifold body 17C with static pressure
Supplied to Therefore, by stirring the inside of the manifold main body 17C with the cooling water discharged from the discharge port 30C, every portion in the manifold main body 17C,
As a result, the dynamic pressure and the static pressure at the respective cooling water outlets 18 can be equalized, and the pressures near the respective cooling water outlets 18 in the normal use state can be kept equal. Further, even if a change in the primary pressure and flow rate of the cooling water from the inflow port 8C due to a change in the environment in which the mold is used occurs, the change in the primary pressure and the flow rate can be mitigated by the frontal collision of the cooling water, and Even if the primary pressure and the flow rate at the inlet 8C are increased or decreased, the pressure in the manifold body 17C can be kept equal.

Further, since the discharge port 30C is provided so as to face the bottom surface 29C, the cooling water discharged from the discharge port 30C collides head-on with the bottom surface 29C, and the manifold body 17C
The cooling water can be directed in the entire circumferential direction, and the static pressure and the dynamic pressure of the cooling water in the manifold body 17C can be made more uniform.

In the fifth embodiment shown in FIG.
A short pipe 41D, which is a frontal collision part, is connected downward to the tip 23D side of a main pipe 21D which is a part of a cooling water channel provided substantially at the center of the manifold body 17D.
At the lower end 42D of D, there is provided a disk 51 having the same radius around the center of the lower end 42D. A lower end 42D communicates with the center of the disk 51, and the disk 51 and the bottom surface 29D have the same width W, and a discharge port 30D is provided.

Therefore, the cooling water flowing in from the inflow port 8D passes through the main pipe 21D, and then collides head-on at the tip 23D, that is, collides with the tip 23D located directly in front of the water flow direction. Due to this head-on collision, the inertial force of the cooling water from the inflow port 8D is substantially evenly distributed, and the short-circuit pipe D passes through the short pipe D to the bottom of the discharge port 30D.
Discharge toward 29D. During this discharge, the cooling water is on the bottom
The frontal collision with 29D distributes the inertia of the cooling water substantially evenly. And a branch channel formed between the disk 51 having the same radius and the same width W and the bottom surface 29D and dispersed in the entire circumferential direction.
The cooling water passes through 52 and fills the manifold body 17D to stir the inside. For this reason, the cooling water is in an equal pressure state inside the manifold body 17D filled with the cooling water, and furthermore, at the plurality of cooling water outlets 18, and therefore, the cooling water is supplied to the fixed mold from the cooling water outlet 18 in a stable state. it can.

As described above, in the fifth embodiment, when the cooling water collides head-on with the front end 23D of the main pipe 21D, the inertia of the cooling water is almost uniformly dispersed, and the manifold body 17
C, the cooling water flowing in from the inflow port 8D collides head-on and the inertia of the cooling water is dispersed, and then has the same length and the same width W. The cooling water flowing through the branch water passage 52 receiving the resistance is supplied to the manifold body 17C under the same dynamic pressure and static pressure.
Therefore, by stirring the inside of the manifold body 17D with the cooling water, the dynamic pressure and the static pressure at all points in the manifold body 17D, and furthermore, at the respective cooling water outlets 18 can be equalized, and each cooling in the normal use state can be performed. The pressure near the water outlet 18 can be kept equal. Further, even if the primary pressure and the flow rate of the cooling water from the inflow port 8D change due to the change in the environment where the mold is used, the primary pressure and the flow rate can be reduced by the frontal collision of the cooling water, Even if the primary pressure and flow rate at the inlet 8D are increased or decreased, the pressure in the manifold body 17D can be kept equal.

Further, since the lower end 42D is provided so as to face the bottom surface 29D, the cooling water discharged from the discharge port 30D collides with the bottom surface 29D in a frontal direction, and the cooling water is directed all around the inside of the manifold body 17D. The static pressure and the dynamic pressure of the cooling water in the manifold body 17D can be made more uniform.

Note that the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the embodiment, a part of the cooling water in the cooling water supply manifold 5 is superfluous and supplied to the nozzle 32 of the cooling water recovery manifold 7 through the communication pipe 12, but the pump 16 or another hydraulic pressure is used. The cooling water may be supplied to the nozzle 32 directly from the source.

[0040]

According to the present invention, a cooling water inlet, a plurality of cooling water outlets for supplying cooling water to a cooling water circuit of a mold, respectively, are introduced into the cooling water supply manifold body, and the cooling water is introduced from the inlet. A cooling water passage for discharging the cooling water into the cooling water supply manifold body through a discharge port, a front collision portion of the cooling water is provided in the middle of the cooling water passage, and the front collision portion has the same length and the same width. The cooling water supply manifold of the mold, characterized by connecting the branch water channels of the cooling water, the inertia of the cooling water flowing from the inlet due to the front collision of the cooling water at the front collision portion and the branch of the cooling water by the branch water channel. The force is dispersed and discharged from the discharge port into the cooling water supply manifold main body, and further, the cooling water is diffused in the cooling water supply manifold main body, and the pressure in the vicinity of the plurality of cooling water outlets can be kept equal.

Further, according to the present invention, a plurality of cooling water recovery ports for recovering cooling water from a cooling water circuit of a mold, an outlet for discharging cooling water, and an outlet are provided in the cooling water recovery manifold body. A cooling water recovery manifold for a mold, comprising: a nozzle for water jetting, the tip of which faces the outflow direction of the outlet, wherein water is jetted from the nozzle toward the outlet. By drawing in the cooling water,
The flow rate of the cooling water in the cooling water circuit of the mold can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a flow of cooling water according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a cooling water supply manifold showing the first embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of a cooling water recovery manifold showing the first embodiment of the present invention.

FIG. 4 is a partially cutaway perspective view of a cooling water supply manifold according to a second embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a cooling water supply manifold according to a third embodiment of the present invention.

FIG. 6 is a partially cutaway perspective view of a cooling water supply manifold according to a fourth embodiment of the present invention.

FIG. 7 is a partially cutaway perspective view of a cooling water supply manifold according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed die 3 Cooling water circuit 5 Cooling water supply manifold 7 Cooling water recovery manifold 8 Inlet 13 Outlet 17 Cooling water supply manifold body 18 Cooling water outlet 21 Main pipe (cooling water channel) 23 25 27 Tip (front collision part) 24 26 Branch pipe (branch channel) 30 Discharge port 31 Coolant collecting manifold body 32 Nozzle 34 Tip 37 Coolant collecting port

Claims (2)

[Claims] 1. A cooling water supply manifold body, a plurality of cooling water outlets for supplying cooling water to a cooling water circuit of a mold, and a cooling water introduced from the inlet. A cooling water passage for discharging through a discharge port into the cooling water supply manifold main body, and in the middle of the cooling water passage,
A cooling water supply manifold for a mold, wherein a cooling water front collision portion is provided, and a branch water passage having the same length and the same width is connected to the front collision portion. 2. A cooling water collecting manifold body, a plurality of cooling water collecting ports for collecting cooling water from a cooling water circuit of a mold, an outlet for draining cooling water, and an outlet of the outlet to the outlet. A cooling water recovery manifold for a mold, comprising: a nozzle for jetting water, the tip of which faces toward the direction.