JP2011126171A - Mold thermostat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mold thermostat which is of a simple constitution and precisely controllable of the temperature of a desired position of a mold, and thereby, able to mold a molded object with high quality. <P>SOLUTION: This mold thermostat comprises (1) first piping 10, with an introduction orifice 11 and a discharge orifice 12, through which a temperature control fluid circulates internally, (2) a temperature control part 3 which is installed at a plurality of spots inside the mold 1 and is connected with the first piping 10, through which the supply of the temperature control fluid to the temperature control part 3 and the discharge of the fluid from the temperature control part 3, can be achieved, and (3) second piping 20 which is equipped with an introduction orifice 21 and a discharge orifice 22, and makes an internal circulation of the temperature control fluid for controlling the temperature of the temperature control fluid inside the first piping 10. In addition, the second piping 20 is externally fitted to the first piping 10 as a sleeve. Further, the direction of the temperature control fluid circulating through the second piping 20 is opposite to the direction of the temperature control fluid circulating through the first piping 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a temperature control device for a mold, and more specifically, a first pipe having an introduction port and a discharge port, in which a temperature control fluid is circulated, and provided at a plurality of locations in the mold. A temperature control unit that is connected to the pipe and supplies and discharges the temperature control fluid, and the temperature control fluid is sequentially supplied from the first pipe to each temperature control unit to adjust the temperature of the mold. It is related with the apparatus of.

  In a mold for forming a cavity for molding a molten metal material or resin material (hereinafter collectively referred to as a molding material) into a desired shape into a molded product, the mold is heated to a high temperature by the heat of the molding material It is important to maintain the mold at an appropriate temperature such as cooling the mold, preheating the mold, or keeping the mold warm in order to improve the quality and productivity of the molded product.

  For example, as shown in FIG. 7, for example, as shown in FIG. 7, a general conventional technique related to a mold temperature control device includes a pipe 10 ′ having an introduction port 11 ′ and a discharge port 12 ′ through which a temperature control fluid is circulated, What is provided with the temperature control part 3 'which is provided in several places in the type | mold 1 and is connected with piping 10' and the temperature control fluid is supplied and discharged | emitted is known. In the example shown in FIG. 7, first to fourth temperature adjustment holes 31 ′ to 34 ′ are provided as the temperature adjustment unit 3 ′, and each temperature adjustment hole 31 ′ to 34 ′ is connected to the pipe 10 ′. ing. A partition plate 4 ′ is provided so as to extend from the pipe 10 ′ to near the tip of each temperature adjustment hole 31 ′ 34 ′. In the example shown in FIG. 7, the left side of the pipe 10 'is the introduction port 11', and the right side of the pipe 10 'is the discharge port 12'. In such a mold temperature control device, the temperature control fluid adjusted to a predetermined temperature is supplied from the inlet 11 ′ of the pipe 10 ′ and left of the partition plate 4 ′ in the first temperature control hole 31 ′. From the side through the tip to the right of the partition plate 4 ′ and through the pipe 10 ′ between the first temperature adjustment hole 31 ′ and the second temperature adjustment hole 32 ′. The piping 10 is circulated from the left side of the partition plate 4 ′ in the 32 ′ to the right side of the partition plate 4 ′ via its tip, and between the second temperature control hole 32 ′ and the third temperature control hole 33 ′. And is distributed from the left side of the partition plate 4 ′ in the third temperature control hole 33 ′ to the right side of the partition plate 4 ′ via the tip thereof, and the third temperature control hole 33 ′ and the fourth temperature. The partition plate 4 ′ is circulated through the pipe 10 ′ between the adjustment hole 34 ′ and the partition plate 4 ′ in the fourth temperature adjustment hole 34 ′ from the left through the tip thereof. Is distributed to the right, it is circulated 'pipe 10' the fourth temperature regulation hole 34, and is discharged from the discharge port 12 '. That is, in the conventional mold temperature control apparatus shown in FIG. 7, a plurality of temperature control holes 31 ′ to 34 ′ are connected in series via the pipe 10 ′, and are introduced from the inlet 11 ′ of the pipe 10 ′. The temperature adjusting fluid is sequentially supplied to the first to fourth temperature adjusting holes 31 ′ to 34 ′ and discharged from the discharge port 12 ′ of the pipe 10 ′.

  As another conventional technique related to a mold temperature control device, for example, Patent Document 1 is known. Patent Document 1 discloses a mold cooling / heating device constituted by a piping bolt 10 and a holding body 1 which are respectively attached to a plurality of holes 8 formed in the mold 7. Is formed into a hollow substantially plate shape, and the hollow portion in the holding body 1 is defined as a two-stage flow path by a plate-shaped partition wall 4, and one of the two flow paths is entirely filled with fluid. A common introduction path 2 and the other flow path space as a common discharge path 3 are formed in the thickness direction, and a plurality of through holes 9 into which pipe bolts 10 are respectively inserted into the holding body 1 are inserted in the thickness direction. Further, the pipe bolt 10 is attached to the hole 8 of the mold 7 and the shaft portion into which the pipe bolt 10 is inserted into the through hole 9 of the holding body 1 has a double structure composed of the inner tube 12 and the outer tube 13. Communicates the inside of the inner pipe 12 with one of the introduction path 2 and the discharge path 3 in the holding body 1 and between the inner pipe 12 and the outer pipe 13. And be in fluid other and the communication of the discharge passage 3, the mold cooling and heating apparatus is disclosed, wherein. That is, in Patent Document 1, the introduction path 2 of the holding body 1 is connected in parallel to each inner pipe 12 and each outer pipe 13 is connected in parallel to the discharge path 3 of the holding body 1. The temperature adjusting fluid is introduced into each inner pipe 12 in parallel from one introduction path 2 and is discharged in parallel from the outer pipe 13 to the discharge path 3 of the holding body 1.

Japanese Utility Model Publication No. 63-47383

  However, among the above conventional techniques, the one shown in FIG. 7 has a structure in which the temperature adjustment holes 31 ′ to 34 ′ are connected in series, and the temperature adjustment is sequentially performed in the temperature adjustment holes 31 ′ to 34 ′. Since the fluid is supplied, the temperature control fluid supplied from the introduction port 11 ′ of the pipe 10 ′ gradually increases depending on the temperature of the mold 1 while going to the discharge port 12 ′ through the temperature control holes 31 ′ to 34 ′. Will change. When the temperature control device shown in FIG. 7 uses, for example, water (cooling water) to cool the mold 1, the temperature control fluid flows from the first temperature control hole 31 ′ to the fourth temperature control hole 34 ′. Since the heat | fever of the metal mold | die 1 is absorbed as it distribute | circulates sequentially toward FIG. 8, as shown by the continuous line in FIG. 8, temperature will rise gradually. Further, when the temperature adjusting device shown in FIG. 7 uses, for example, water (heated water) to heat or keep the mold 1, the temperature adjusting fluid is supplied from the first temperature adjusting hole 31 ′ to the fourth temperature. As heat is transferred to the mold 1 as it sequentially flows toward the adjustment hole 34 ', the temperature gradually decreases as shown by a chain line in FIG. Therefore, in the conventional general temperature control device in which the temperature control holes 31 ′ to 34 ′ are arranged in series in this way, the position of the temperature control holes 31 ′ to 34 ′ is on the introduction port 11 ′ side ( There is a problem that the temperature control ability varies depending on whether it is on the IN side or the outlet 12 ′ side (OUT side). Due to the difference in temperature control capability, it is difficult to control the temperature of the mold 1 with high accuracy, and it is therefore difficult to mold the molded product with high quality. Further, in the case shown in FIG. 7, the temperature adjustment capability varies depending on the positions of the temperature adjustment holes 31 ′ to 34 ′. Therefore, the number of the temperature adjustment units 3 ′ provided for one pipe 10 ′ There is a problem that the mold 1 cannot be accurately controlled to a desired temperature. As a countermeasure against this problem, it is conceivable to provide a plurality of pipes 10 'and connect a plurality of temperature control units 3' in series to each pipe 10 '. Since equipment for circulating and supplying the regulation fluid tends to be made compact, it is difficult to provide a plurality of pipes 10 '.

  Among the above conventional techniques, in Patent Document 1, a plurality of inner pipes 12 are connected in parallel to the introduction path 2 of the holding body 1 and a plurality of outer pipes are connected to the discharge path 3 of the holding body 1. Since 13 are connected in parallel, it is necessary to supply and circulate the temperature adjusting fluid at a high pressure in order to distribute the temperature adjusting fluid uniformly to each hole 8 of the mold 7. There are problems that the equipment for supplying the temperature control fluid is enlarged, the mold and the surrounding equipment cannot be made compact, and the cost is high.

  The present invention has been made in view of the above-described problems, and is capable of accurately adjusting the temperature of a desired position of a mold with a simple structure, and thus capable of molding a molded product with high quality. An object is to provide a mold temperature control device.

  In order to achieve the above object, the mold temperature control device according to claim 1 includes a first pipe having an inlet and a discharge port through which a temperature control fluid is circulated, and a plurality of locations in the mold. And a temperature control unit connected to the first pipe and supplied and discharged with the temperature control fluid, wherein the temperature control fluid in the first pipe A second piping through which a temperature adjusting fluid for adjusting the temperature is circulated is provided.

  In the first aspect of the present invention, a second pipe is provided adjacent to the first pipe, and the same or different temperature control fluid as that of the first pipe is circulated through the second pipe. Since the temperature of the temperature control fluid that is sequentially circulated through the first pipe and each temperature control unit can be adjusted to an appropriate temperature, the temperature of the mold is adjusted appropriately and a high-quality molded product can be accurately obtained. Molded.

  By providing the second pipe adjacent to the first pipe, the same temperature control fluid as that of the first pipe or another temperature control fluid is circulated through the second pipe. Since the temperature of the temperature adjusting fluid that is sequentially circulated through each temperature adjusting unit can be adjusted to an appropriate temperature, a high quality molded product can be accurately formed by appropriately adjusting the temperature of the mold.

(Aspect of the Invention)
In the following, the invention that is claimed to be claimable in the present application (hereinafter referred to as “claimable invention”. The claimable invention is at least the “present invention” to the invention described in the claims. Some aspects of the present invention, including subordinate concept inventions of the present invention, superordinate concepts of the present invention, or inventions of different concepts) will be illustrated and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. In each of the following items, item (1) corresponds to claim 1.

(1) A first pipe having an introduction port and a discharge port, in which a temperature adjusting fluid is circulated, and provided at a plurality of locations in the mold and connected to the first pipe to supply the temperature adjusting fluid. A mold temperature control device having a temperature control unit to be discharged,
2. A mold temperature control apparatus comprising a second pipe through which a temperature control fluid for adjusting the temperature of the temperature control fluid in the first pipe is circulated.

  In the invention of (1), a second pipe is provided adjacent to the first pipe, and the same or different temperature control fluid as that of the first pipe is circulated through the second pipe. Therefore, the temperature of the temperature control fluid that is sequentially circulated through the first pipe and each temperature control unit can be adjusted to an appropriate temperature. Can be molded well.

  (2) The mold temperature control device as set forth in (1), wherein the second pipe is externally attached to the first pipe.

  In the invention of item (2), in the invention of item (1), the second pipe is mounted adjacent to the first pipe by mounting the second pipe so as to cover the outside of the first pipe. Can be provided. Therefore, by passing the same or different temperature control fluid as the temperature control fluid of the first pipe through the second pipe, the temperature of the temperature control fluid that is sequentially circulated through the first pipe and each temperature control unit is appropriately set. Can be adjusted to various temperatures

  (3) The mold temperature control device according to (1), wherein the second pipe is built in the first pipe.

  In the invention of the item (3), in the invention described in the item (1), the second pipe is provided adjacent to the first pipe by mounting the second pipe inside the first pipe. Can do. Therefore, by passing the same or different temperature control fluid as the temperature control fluid of the first pipe through the second pipe, the temperature of the temperature control fluid that is sequentially circulated through the first pipe and each temperature control unit is appropriately set. Can be adjusted to various temperatures

  (4) The temperature control fluid circulated in the second pipe is configured to flow in a direction opposite to the direction of the temperature control fluid circulated in the first pipe (2 ) Or the temperature control device for a mold as described in the item (3).

  In the invention of the item (4), in the invention described in the item (2) or (3), the temperature of the temperature adjusting fluid circulated through the first pipe is directed from the inlet to the outlet of the first pipe. Tend to be higher (in the case of cooling) or lower (in the case of heating). Therefore, the second pipe is mounted outside or inside the first pipe, and the temperature control fluid is circulated in the second pipe in the direction opposite to the direction of the temperature control fluid circulated in the first pipe. . The second temperature control fluid supplied to the second pipe is, for example, a low temperature in the case of cooling and a high temperature in the case of heating, and is set from the inlet of the second pipe at a set temperature. The supplied temperature is adjusted toward the outlet of the second pipe while adjusting the temperature of the temperature adjusting fluid flowing through the first pipe. At this time, when the mold is cooled by the temperature control fluid of the first pipe, the temperature control fluid of the first pipe, which tends to increase in temperature as it approaches the discharge port of the first pipe, The pipe is cooled by a temperature control fluid having a predetermined temperature supplied from an inlet arranged near the outlet of the first pipe. In addition, when the mold is heated or kept warm by the temperature adjusting fluid of the first pipe, the temperature adjusting fluid of the first pipe, which tends to decrease in temperature as it approaches the discharge port of the first pipe, The second pipe is heated or kept warm by a temperature adjusting fluid having a predetermined temperature supplied from an inlet arranged near the outlet of the first pipe. Thereby, since the temperature of the temperature control fluid which distribute | circulates 1st piping is equalize | homogenized over the whole, a difference does not arise in temperature control capability, but it can temperature-control a metal mold | die uniformly and accurately.

It is the conceptual diagram shown in order to demonstrate one Embodiment of the temperature control apparatus of the metal mold | die of this invention. It is a partial expanded sectional view of FIG. 4 is a graph showing the temperature of the temperature adjusting fluid with respect to the position of the temperature adjusting unit in the temperature adjusting device of the present invention. It is the conceptual diagram shown in order to demonstrate embodiment different from FIG. 1 of the temperature control apparatus of the metal mold | die of this invention. It is the fragmentary sectional view shown in order to demonstrate one Embodiment of the temperature control apparatus of the metal mold | die of this invention concretely. It is the fragmentary sectional view shown in order to demonstrate embodiment different from FIG. 5 of the temperature control apparatus of the metal mold | die of this invention. It is the conceptual diagram shown in order to demonstrate the conventional general die temperature control apparatus. 8 is a graph showing a change in temperature of the temperature adjusting fluid with respect to the position of the temperature adjusting unit in the temperature adjusting apparatus shown in FIG.

One embodiment of a mold temperature control device of the present invention will be described in detail with reference to FIGS. 1 and 2 conceptually shown. In the drawings, the same reference numerals denote the same or corresponding parts.
The mold temperature control apparatus according to the present invention is roughly provided with a first pipe 10 having an introduction port 11 and a discharge port 12 in which a temperature control fluid is circulated, and a plurality of locations within the mold 1. The temperature adjusting unit 3 connected to the pipe 10 and supplied and discharged with the temperature adjusting fluid, the inlet 21 and the outlet 22 are provided, and the temperature for adjusting the temperature of the temperature adjusting fluid in the first pipe 10 inside is provided. And a second pipe 20 through which the regulating fluid is circulated.
In this embodiment, the second pipe 20 is externally covered with the first pipe 10, and the direction of the temperature control fluid flowing through the second pipe 20 is set in the first pipe 10. It is comprised so that it may become a direction opposite to the direction of the temperature control fluid distribute | circulated.
In the following description, the temperature control device of the present invention is for cooling the mold 1, and the temperature control fluid is cooling water and the temperature control unit is the cooling hole 3.

  As shown in FIGS. 1 and 2, a plurality of cooling holes 3 through which cooling water is supplied and circulated are provided at predetermined positions of the mold 1 (indicated by reference numerals 31 to 34 in the embodiment shown in FIG. 1). 4 places) are formed. One end of the first pipe 10 (left side in FIG. 1) is provided with an introduction port 11, and a conduit for supplying cooling water such as a pump at a predetermined flow rate is connected to the introduction port 11. Yes. Further, when it is necessary to adjust the cooling water to a predetermined temperature, the heat exchanging means is interposed on the upstream side or the downstream side of the pipe line of the means such as a pump. The other end (right side in FIG. 1) of the first pipe 10 is provided with a discharge port 12, and a pipe line connected to a storage tank, a water discharge path, or the like is connected to the discharge path 12. In the case of having a storage tank, a pipe line of a pump or the like for sending cooling water to the inlet 11 is connected to supply the cooling water from the storage tank into the first pipe 10 and the first pipe. The cooling water discharged from 10 can be returned to the storage tank and circulated.

  In the embodiment shown in FIGS. 1 and 2, connecting pipes 13 are provided at positions corresponding to the cooling holes 3 of the first pipe 10 so as to branch from the first pipe 10. 13 is connected to each cooling hole 3 of the mold 1. The connecting pipe 13 can also be formed into a bottomed sleeve shape and fitted into the cooling hole 3. A partition plate 4 is provided inside the connection pipe 13 from the bottom of the first pipe 10 so as to extend to the vicinity of the tip (bottom or ceiling) of each cooling hole 3. The upstream side from the first pipe 10 to the tip of the partition plate 4 is an introduction path for introducing cooling water from the first pipe 10 into the cooling hole 3, and from the tip of the partition plate 4 to the first pipe 10. The downstream side is a discharge path that discharges from the cooling hole 3 to the first pipe 10. The structure of the mold 1 by the cooling hole 3, the first pipe 10, the connecting pipe 13, and the partition plate 4 is the same as that of the conventional apparatus shown in FIG.

  In the implementation shown in FIGS. 1 and 2, the second pipe 20 is mounted on the outside of the first pipe 10 so as to cover it. For example, as shown in FIG. 2, the second pipe 20 is formed by inserting a connecting pipe 13 through an opening 23 formed substantially at the center in the width direction of the plate-shaped material and bending the second pipe 20 to be rounded in the width direction. By joining the side edges 24, 24 and the opening 23 and the connecting pipe 13 by welding or the like, the first pipe 10 configured in the same manner as in the prior art can be arranged in the second pipe 20. . In addition, a cutout is formed in the side edge of the plate-like material so as to be half the size of the cross section of the connection tube 13, the plate-like material is bent so as to be rolled in the width direction, and the connection tube 13 is accommodated in the cutout. By joining the edge, the notch, and the connecting pipe 13 by welding or the like, the first pipe 10 configured in the same manner as the conventional one can be arranged inside the second pipe 20.

  One end of the second pipe 20 is provided with an inlet 21 through which cooling water for holding or cooling the cooling water of the first pipe 10 at a predetermined temperature is provided, and the other end is provided with the other end. A discharge port 22 is provided to discharge the cooling water after the cooling water of the first pipe 10 is maintained or cooled to a predetermined temperature. In this embodiment, the introduction port 21 and the discharge port 22 of the second pipe 20 are provided at opposite end portions with respect to the introduction port 11 and the discharge port 12 of the first pipe 10. Therefore, as indicated by arrows in FIG. 1, the first pipe 10 and the second pipe 20 are configured such that the flow direction of the cooling water is reversed in the left-right direction of the drawing. However, the present invention includes a case where the first pipe 10 and the second pipe 20 are configured to have the same flowing direction of the cooling water. In addition, about the pipe line connected to the inlet 21 and the outlet 22 of the 2nd piping 20, the thing similar to the 1st piping 10 is different from the 1st piping 10, or the 1st piping 10 is used. It is possible to branch and connect to share what is connected to. The cooling water supplied to the second pipe 20 can be set to the same temperature as the cooling water supplied to the first pipe 10, and the temperature is different from the cooling water supplied to the first pipe 10. Can also be set. Furthermore, if necessary, a temperature control fluid made of a gas such as cooling water (including other liquids other than water) or gas having different components in the first pipe 10 and the second pipe 20 may be supplied. it can.

Next, a modification of the mold temperature control device of the present invention will be described with reference to FIG. In this embodiment, only the parts different from the embodiment shown in FIG. 1 will be described, and the same or corresponding parts as those in the embodiment shown in FIG. Omitted.
In the embodiment shown in FIG. 1, the second pipe 20 is mounted so as to cover the outside of the first pipe 10, whereas in the embodiment shown in FIG. A second pipe 20 is disposed inside 10 so as to penetrate the partition plate 4. Also in this embodiment, as shown by the arrows in FIG. 4, the first pipe 10 and the second pipe 20 are configured such that the flow direction of the cooling water is reversed in the left-right direction in the figure.

  Next, the operation of the mold temperature control apparatus of the present invention configured as described above will be described. The mold 1 in this embodiment is for casting in which a metal in a heated and molten state is filled as a molding material, and the inlet 11 of the first pipe 10 is used to solidify the filled molten metal. Is supplied with cooling water adjusted to a predetermined temperature. The cooling water flows from the introduction port 11 of the first pipe 10 to the discharge path from the introduction path of the first cooling hole 31, and the second through the pipe 10 between the first cooling hole 31 and the second cooling hole 32. From the introduction path of the cooling hole 32, the discharge path is circulated, and from the introduction path of the third cooling hole 33 through the piping 10 between the second cooling hole 32 and the third cooling hole 33, the third cooling is performed. Through the pipe 10 between the hole 33 and the fourth cooling hole 34, the first cooling pipe 34 flows from the introduction path of the fourth cooling hole 34 to the discharge path, and flows from the fourth cooling hole 34 to the discharge port 12. Is discharged outside. At this time, since the heat is sequentially transferred from the respective cooling holes 31 to 34 of the mold 1 to the cooling water, the temperature of the cooling water supplied to the introduction port 11 at a predetermined temperature tends to increase as it approaches the discharge port 12. Yes (see Figure 8). However, particularly in this embodiment, as indicated by arrows in FIGS. 1 and 4, the cooling water flows through the first pipe 10 and the second pipe 20 so as to be reversed in the horizontal direction in the figure. The cooling water circulated from the fourth cooling hole 34, which tends to have the highest temperature of the first pipe 10, toward the discharge port 12, is introduced at a predetermined temperature from the introduction port 21 of the second pipe 20. Cooled most strongly by the cooling water. Then, by moving heat from the cooling water of the first pipe 10, the cooling water of the second pipe 20 becomes weaker as the cooling water of the first pipe 10 is cooled closer to the discharge port 22. Therefore, as shown in FIG. 3, the temperature of the cooling water flowing through the first pipe 10 depends on whether the positions of the cooling holes 31 to 34 are the inlet 11 side (IN side) or the outlet 12 side (OUT side). Thus, there is no difference in cooling capacity, and the mold 1 can be cooled uniformly. Therefore, the temperature of the mold 1 can be accurately controlled, and the molded product can be molded with high quality. In addition, since there is no difference in the cooling capacity depending on the positions of the cooling holes 31 to 34, the number of the cooling holes 3 (31, 32, 33, 34,...) Provided for one first pipe 10. Is rarely restricted. When the temperature of the mold is adjusted so that a temperature gradient is generated, the inlets 11 and 21 are arranged so that the cooling water flows through the first pipe 10 and the second pipe 20 in the same direction in the horizontal direction of the drawing. And the discharge ports 12 and 22 are arranged at the same end.

  Next, details of another embodiment of the present invention will be described in detail with reference to FIG. Here, only parts different from the embodiment shown in FIGS. 1 and 4 will be described, and the same or corresponding parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted. .

  In the embodiment shown in FIG. 1 and FIG. 4, the introduction path and the discharge path are formed in the cooling holes 31 to 34 by providing the partition plate 4. An introduction pipe 5 and a discharge pipe 6 are respectively provided at positions corresponding to the cooling holes 31 to 34 in the intermediate portion of one pipe 10.

  The mold 1 is provided with a plate 7 so as to close the openings of the cooling holes 31 to 34. A pair of connecting pipes 13 and 13 are provided at positions corresponding to the cooling holes 31 to 34 of the plate 7. The introduction pipe 5 and the discharge pipe 6 are connected to the connection pipes 13 and 13, respectively. In the embodiment shown in FIG. 5, the introduction pipe 5 is formed relatively long so as to open near the tip of the cooling hole 3, and the discharge pipe 6 is formed relatively short so as to open near the plate 7.

  Caps 25, 26 are provided at both ends of the second pipe 20, the inlet 21 is formed in one cap 25 (right side in the figure), and the other cap 26 (left side in the figure). A discharge port 22 is formed in the. Pipe lines 41 and 42 each having a coupler 40 are connected to the introduction port 21 and the discharge port 22, respectively. Further, pipes 43 and 44 are respectively fixed in the vicinity of both ends of the second pipe 20, and the inlet 11 of the first pipe 10 is connected to one end of the pipe 43, and one end of the pipe 44 is connected. Is connected to the discharge port 12 of the first pipe 10, and a coupler 40 is connected to the other ends of the pipes 43 and 44. Each coupler 40 is easily and detachably connected to a pipeline of means such as a pump for supplying cooling water of a predetermined temperature at a predetermined flow rate, and a pipeline connected to a storage tank, a water discharge channel, or the like. Can do. Therefore, the inlets 11 and 21 and the outlets 12 and 22 of the first pipe 10 and the second pipe 20 can be changed as needed easily.

Next, details of still another embodiment of the present invention will be described in detail with reference to FIG. Here, only parts different from the above-described embodiment will be described, and the same or corresponding parts as those of the above-described embodiment will be denoted by the same reference numerals and description thereof will be omitted.
In the embodiment shown in FIG. 5, pipelines 41, 42, 43, 44 having couplers 40 are connected to the inlets 11, 12 and the outlets 12, 22 of the first and second pipes 10, 20, respectively. In contrast, in this embodiment, pipes 41 and 42 each having a coupler 40 are connected to the inlet 21 and the outlet 22 of the second pipe 20, respectively, and the inlet 11 of the first pipe 10 is connected. The discharge port 12 is arranged inside the second pipe 20 so as to open near the introduction port 21 and the discharge port 22.

  The coupler 40 of the second pipe 20 can be easily attached to and detached from the pipes of means such as a pump for supplying cooling water having a predetermined temperature at a predetermined flow rate, and pipes connected to a storage tank or a water discharge path. Can be connected as possible. When cooling water of a predetermined temperature is sent from a pipe line of one coupler 40 at a predetermined flow rate and pressure, the cooling water introduced into the second pipe 20 from the inlet 21 of the second pipe 20 is A part is introduced into the first pipe 10 from the inlet 11 of the first pipe 10 that opens in the vicinity of the inlet 21 of the second pipe 20, and the cooling holes 31 to 34 of the mold 1 are sequentially introduced. While flowing and cooling the mold 1, the mold 1 is discharged from the discharge port 12 at the other end of the first pipe 10. At the same time, the rest of the cooling water flows through the second pipe 20 and cools the cooling water flowing through the first pipe 10 while cooling it from the outlet 12 of the first pipe 10. It flows with the water from the discharge port 22 to the storage tank, the water discharge channel and the like through the pipeline.

  In this embodiment, the direction of the cooling water flowing through the first pipe 10 and the second pipe 20 is not different, and flows in the same direction. However, in this embodiment, the cooling water is supplied to the inlets 11 and 21 of the first pipe 10 and the second pipe 20 through the pipe lines 41 and 42 having the pair of couplers 40 and 40, respectively. Since the cooling water can be discharged from the discharge ports 12 and 22 of the pipe 10 and the second pipe 20, respectively, the structure becomes extremely simple, and therefore, the compact mold 1 can be handled.

  The present invention is not limited to the embodiment described above. In the present invention, for example, the embodiment shown in FIGS. 5 and 6 can be configured such that the second pipe 20 is provided inside the first pipe 10 as shown in FIG. The present invention can be applied not only to a mold for molding a molten metal but also to a mold for molding a resin. Furthermore, the present invention is applicable not only when cooling a mold, but also when heating or keeping a mold using a temperature control fluid heated to a predetermined temperature such as heated water or oil instead of cooling water. can do. The temperature adjusting fluid can be not only a liquid such as water or oil but also a gas such as nitrogen gas.

  1: Mold, 3: Temperature control unit, 4: Partition plate, 5: Introduction pipe, 6: Discharge pipe, 10: First pipe, 11: Inlet, 12: Discharge, 13: Connection pipe, 20: Second piping, 21: introduction port, 22: discharge port

Claims (1)

A first pipe that has an inlet and an outlet and in which a temperature adjusting fluid is circulated, and is provided at a plurality of locations in the mold and is branched and connected from the first pipe to be supplied with the temperature adjusting fluid. A mold temperature control device comprising a temperature control unit,
2. A mold temperature control apparatus comprising a second pipe through which a second temperature control fluid for adjusting the temperature of the temperature control fluid in the first pipe is circulated.

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