JPWO2006030503A1 - Mold, mold manufacturing method, heat exchange flow path forming block and molded product - Google Patents

Abstract

The mold 120A of the present invention has a mold body 130A having a recess C2 on the back side of a portion where heat exchange is desired, and a shape corresponding to the recess C2 of the mold body 130A, and forms a heat exchange channel. The mold 120A includes a heat exchange flow path forming block 140A in which grooves 142A and 144A are formed, and the mold main body 130A and the heat exchange flow path forming block 140A are heat resistant inorganic adhesive It is characterized by being bonded by bonding with an agent. For this reason, according to the present invention, it is easy to form a heat exchange channel such as a cooling channel or a heating channel in an appropriate place inside the mold, and the shape of the mold that can be manufactured. In addition, it is possible to provide a mold that is loosely limited in size and low in manufacturing cost.

Description

  The present invention relates to a mold, a method for manufacturing a mold, a heat exchange channel forming block, and a molded product.

FIG. 12 is a view for explaining a conventional mold 1110. 12A is a perspective view of a mold casting apparatus 1100 provided with a conventional mold 1110, and FIG. 12B is a view taken along arrow A1-A1 in FIG. ) Is an A2-A2 cross-sectional view of FIG.
This conventional mold 1110 has a mold 1120A and a mold 1120B as shown in FIG. The mold 1120A and the mold 1120B are provided with a heating circuit 1140 having an insertion hole 1142 and a rod-shaped heater 1144 and a cooling circuit 1150 having cooling channels 1152, 1154, 1156 and 1158 (for example, Patent Document 1). reference.).
Reference numeral 1111 indicates a gate, reference numeral 1112 indicates a runner, reference numeral 1113 indicates a gate, reference numeral 1114 indicates a cavity, and reference numeral 1115 indicates a vent hole.

For this reason, according to the conventional metal mold | die 1110, since heating required for the metal mold | die before pouring can be performed, the hot-water wettability inside a metal mold | die improves, and the quality of a product improves. In addition, according to the conventional mold 1110, it is possible to perform heating necessary for the mold after pouring, so that the occurrence of hot cracking due to overcooling and the accompanying damage to the mold are suppressed. Can do.
Further, according to the conventional mold 1110, it is possible to perform the necessary cooling for the mold after pouring, so that the mold is suppressed from being heated to an undesirable temperature. For this reason, even when molding is repeatedly performed for a long time or when the product is quickly taken out from the mold, the occurrence of seizure and galling is suppressed, and the productivity can be further increased.

  However, in the conventional mold 1110, as the cooling circuit 1150, it is necessary to form the cooling flow paths 1152, 1154, 1156, and 1158 having a complicated structure by hollowing out the inside of the molds 1120A and 1120B. There was a problem that it was not easy to reduce the manufacturing cost of the mold. In addition, since it is not easy to form the cooling channels 1152, 1154, 1156, and 1158 at appropriate locations inside the molds 1120A and 1120B, it is not easy to manufacture a mold having sufficient cooling performance. There was no problem.

FIG. 13 is a view for explaining another conventional mold 1220A, 1220B proposed to solve such a problem. FIG. 13A is a longitudinal sectional view of a matching mold 1210 having other conventional molds 1220A and 1220B, and FIG. 13B is a perspective view of a mold body 1230B in the mold 1220B. 13 (c) is a perspective view of a mold body support 1240A in the mold 1220A.
As shown in FIG. 13, the mating mold 1210 includes a mold 1220A and a mold 1220B. The mold 1220A has a mold body 1230A and a mold body support 1240A that are bonded to each other on the bonding surface P, and a cooling flow path 1250A is formed between them. On the other hand, the mold 1220B has a mold body 1230B and a mold body support 1240B joined to each other on the joining surface P, and a cooling channel 1250B is formed between them (for example, a patent) Reference 2).

  Therefore, according to the other conventional molds 1220A and 1220B, the molds 1220A and 1220B are each made up of two members (the mold body 1230A and the mold body support 1240A, and the mold body 1230B and the mold body support 1240B). ) And the cooling flow paths 1250A and 1250B are formed between them, so that it is not necessary to cut out the inside of the mold to form the cooling flow path, thereby reducing the manufacturing cost of the mold. Can do. Further, it becomes easy to form a cooling flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

JP 63-174775 A JP 2001-162350 A

  However, in such other conventional molds 1220A and 1220B, the mold main bodies 1230A and 1230B and the mold main body supports 1240A and 1240B are joined using a discharge plasma sintering method. For this reason, the mold bodies 1230A and 1230B are exposed to high temperature and high pressure in the course of the joining process, and there is a problem that the accuracy of the surface that defines a part of the cavity S (the surface that contacts the hot water) deteriorates. As a result, there is a problem that the quality of the product deteriorates. On the other hand, a surface that defines a part of the cavity S (a surface in contact with hot water) can be formed after the joining process, but in this case, the process of manufacturing the mold becomes complicated, and the mold is manufactured. There was a problem that it was not easy to reduce the cost.

  Further, in the other conventional molds 1220A and 1220B, as described above, the mold main bodies 1230A and 1230B and the mold main body supports 1240A and 1240B are joined using the discharge plasma sintering method. For this reason, since it is necessary to join the mold bodies 1230A and 1230B and the mold body supports 1240A and 1240B using mirror-finished flat surfaces using an expensive and special discharge plasma sintering apparatus, It is not easy to reduce the manufacturing cost of the mold. Further, in the spark plasma sintering method, since flat surfaces need to be joined together, there is a problem that restrictions on the shape and size of a mold that can be manufactured are severe.

  The above-mentioned problem is a problem that occurs when a cooling flow path is provided inside the mold, but such a problem is also caused when a heating flow path is provided inside the mold. It is also a problem that arises.

  Accordingly, the present invention has been made to solve the above-described problems, and a heat exchange channel such as a cooling channel or a heating channel is formed at an appropriate location inside the mold. It is an object of the present invention to provide a mold that is easy to manufacture, has no restrictions on the shape and size of a mold that can be manufactured, and that is inexpensive to manufacture, and a manufacturing method for manufacturing such a mold. Moreover, it aims at providing the block for heat exchange flow path formation required when manufacturing such a metal mold | die. Furthermore, it aims at providing the various products manufactured using the outstanding metal mold | die as mentioned above.

(1) The metal mold | die of this invention is equipped with the metal mold main body which has a recessed part in the back surface side of the part which wants to perform heat exchange, and the block for heat exchange flow path formation which has a shape corresponding to the recessed part of this metal mold body. A mold for forming a heat exchange channel is formed in at least one of the mold body or the heat exchange channel forming block, and the mold body and the heat exchange are formed. The flow path forming block is characterized by being bonded by bonding with a heat-resistant inorganic adhesive.

  For this reason, according to the mold of the present invention, the mold is divided into the mold body and the heat exchange flow path forming block, and the heat exchange flow path is formed between them. It is no longer necessary to form a heat exchange channel by hollowing out the inside, and the manufacturing cost of the mold can be reduced. In addition, it becomes easy to form a heat exchange channel at an appropriate location inside the mold, and a mold having sufficient heat exchange performance can be manufactured.

  Further, according to the mold of the present invention, the mold body and the heat exchange flow path forming block can be manufactured by adhering and bonding with a heat-resistant inorganic adhesive. No longer exposed to high pressure. For this reason, the accuracy of the surface that defines a part of the cavity (the surface that contacts the hot water) is not deteriorated, and the product quality can be prevented from being deteriorated. In addition, this makes it possible to form a surface that defines part of the cavity (the surface that contacts the hot water) before the joining process, which simplifies the process of manufacturing the mold and the manufacturing cost of the mold. Can be easily reduced.

  In addition, according to the mold of the present invention, it can be manufactured by adhering the mold body and the heat exchange flow path forming block with a heat-resistant inorganic adhesive, so that it is expensive and special discharge plasma. There is no need to use a sintering apparatus, and the manufacturing cost of the mold can be reduced. Further, even if the joining surface of the mold body and the heat exchange flow path forming block is not a flat surface, they can be joined (for example, a curved surface or a rough surface is also possible), and thus a mold that can be manufactured. Restrictions on the shape and size of the mold can be greatly relaxed.

  The mold of the present invention can be suitably used for all of die casting molds, glass molding molds, rubber molding molds, and resin molding molds.

(2) In the mold according to (1), the groove is preferably formed in the heat exchange flow path forming block.

  In the mold of the present invention, a groove may be formed in the concave portion of the mold body, but it is actually not easy to process the groove with respect to the concave portion. On the other hand, as described above, when a groove is formed in the heat exchange flow path forming block, the groove is processed with respect to the convex portion, so that the groove is easily formed. The groove can be processed by, for example, cutting with a ball end mill. Thereby, since the formation surface of a groove | channel becomes a smooth surface, the resistance at the time of the fluid for heat exchange flowing through the flow path for heat exchange can be made small.

  In addition to the groove, the heat exchange flow path forming block preferably has a hole serving as a heat exchange flow path. With this configuration, the heat exchange channel can be formed three-dimensionally, and the design and arrangement of the heat exchange channel in the mold can be facilitated.

(3) In the mold described in (1) or (2) above, the joint surface between the mold body and the heat exchange flow path forming block is exposed on the bottom surface of the mold. preferable.

  In the molding process, the mold is nested in the mother mold and placed under pressure from the mother mold or the slide core. In this specification, the “bottom surface of the mold” refers to a surface of the mold in which pressure from the mother mold or the slide core is mainly applied in the normal direction.

  In the metal mold | die of this invention, a joining surface will be exposed to the bottom face of a metal mold | die by comprising as mentioned above. For this reason, compared with the case where the joint surface is exposed on the side surface of the mold, the portion where the joint surface is exposed is more stably supported by the mother die and the slide core, so that the heat exchange fluid leaks. Is suppressed as much as possible. Also, in this case, the portion where the joint surface is exposed is the farthest away from the surface that defines part of the cavity (the surface that contacts the hot water), so even if the heat exchange fluid leaks, Damage to molds and product defects are suppressed as much as possible.

(4) In the mold according to any one of (1) to (3), the heat-resistant inorganic adhesive is preferably a thermosetting inorganic adhesive.

By comprising in this way, after application | coating of a heat resistant inorganic adhesive agent, it is a comparatively mild condition (for example, 50 to 200 degreeC) in the state which pressed the block for heat exchange flow path formation on the metal mold body. The mold main body and the heat exchange flow path forming block can be firmly joined by simply leaving them under the condition.
In the mold described in (4) above, the heat-resistant inorganic adhesive is more preferably a one-component heat-curable inorganic adhesive.
With this configuration, it is not necessary to mix a plurality of liquids when applying the heat-resistant inorganic adhesive, so the work when the die body and the heat exchange flow path forming block are bonded and joined The effect that property improves is also acquired.

  In the mold according to any one of (1) to (3), the heat-resistant inorganic adhesive is preferably a silica-based inorganic adhesive.

  Silica-based inorganic adhesives have a relatively large linear expansion coefficient and good followability to the surface to be joined. Therefore, the silica-based inorganic adhesive has good compatibility with a mold having a relatively large linear expansion coefficient. The lifetime can be extended.

(5) In the mold according to any one of the above (1) to (4), the film thickness of the heat-resistant inorganic adhesive is preferably in the range of 3 μm to 300 μm.

That is, when the film thickness of the heat resistant inorganic adhesive is less than 3 μm, it becomes difficult to make the film thickness of the heat resistant inorganic adhesive uniform. On the other hand, when the film thickness of the heat-resistant inorganic adhesive exceeds 300 μm, it is not easy to maintain the positional accuracy of the heat exchange flow path forming block with respect to the mold body. In addition, the efficiency of heat exchange decreases.
From these viewpoints, the film thickness of the heat-resistant inorganic adhesive is more preferably in the range of 10 μm to 100 μm.

(6) In the mold according to any one of (1) to (5), at least one of the bonding surfaces of the mold main body and the bonding surface of the heat exchange flow path forming block is: A rough surface is preferred.

  In the mold of the present invention, both the bonding surface of the mold body and the bonding surface of the heat exchange flow path forming block can be mirror surfaces. However, in the mold of the present invention, one or both of the joint surfaces of the mold body and the heat exchange flow path forming block can be roughened. Even in such a case, the heat exchange flow path forming block can be firmly joined to the mold body. Further, since the joining surface does not necessarily need to be a mirror surface, precise grinding of the joining surface becomes unnecessary. For this reason, the joining surface of the mold body and the joining surface of the heat exchange flow path forming block can be easily formed.

  In this specification, the “rough surface” means a surface having an arithmetic average roughness (Ra) in a range of 3 μm to 100 μm, and in this range, good bonding performance can be obtained.

(7) The mold of the present invention includes a mold body having a recess on the back side of a portion where heat exchange is desired, and a heat exchange flow path forming block having a shape corresponding to the recess of the mold body. A mold for forming a heat exchange channel is formed in at least one of the mold body or the heat exchange channel forming block, and the mold body and the heat exchange are formed. The flow path forming block is bonded, and the bonding surface between the mold body and the heat exchange flow path forming block is exposed on the bottom surface of the mold.

  For this reason, according to the mold of the present invention, the mold is divided into the mold body and the heat exchange flow path forming block, and the heat exchange flow path is formed between them. It is no longer necessary to form a heat exchange channel by hollowing out the inside, and the manufacturing cost of the mold can be reduced. In addition, it becomes easy to form a heat exchange channel at an appropriate location inside the mold, and a mold having sufficient heat exchange performance can be manufactured.

  Moreover, according to the metal mold | die of this invention, as mentioned above, a joint surface is exposed to the bottom face of a metal mold | die. For this reason, compared with the case where the joint surface is exposed on the side surface of the mold, the portion where the joint surface is exposed is more stably supported by the mother die and the slide core, so that the heat exchange fluid leaks. Is suppressed as much as possible. Also, in this case, the portion where the joint surface is exposed is the farthest away from the surface that defines part of the cavity (the surface that contacts the hot water), so even if the heat exchange fluid leaks, Damage to molds and product defects are suppressed as much as possible.

  The mold of the present invention can be suitably used for all of die casting molds, glass molding molds, rubber molding molds, and resin molding molds.

(8) In the mold according to (7), the groove is preferably formed in the heat exchange flow path forming block.

  In the mold of the present invention, a groove may be formed in the concave portion of the mold body, but it is actually not easy to process the groove with respect to the concave portion. On the other hand, as described above, when a groove is formed in the heat exchange flow path forming block, the groove is processed with respect to the convex portion, so that the groove is easily formed. The groove can be processed by, for example, cutting with a ball end mill. Thereby, since the formation surface of a groove | channel becomes a smooth surface, the resistance at the time of the fluid for heat exchange flowing through the flow path for heat exchange can be made small.

  In addition to the groove, the heat exchange flow path forming block preferably has a hole serving as a heat exchange flow path. With this configuration, the heat exchange channel can be formed three-dimensionally, and the design and arrangement of the heat exchange channel in the mold can be facilitated.

(9) In the mold according to (7) or (8), it is preferable that an O-ring is provided on a joint surface between the mold body and the heat exchange flow path forming block.

  With this configuration, even if the heat exchange fluid leaks from the heat exchange flow path, the fluid does not leak to the outside from the concave portion of the mold body, and safety is improved.

(10) In the mold according to any one of (1) to (9), it is preferable that the thickness of the mold body in a portion where the heat exchange is desired be in a range of 2 mm to 30 mm. .

That is, when the thickness is 2 mm or less, it is difficult to ensure the necessary strength in the mold body. On the other hand, if the thickness exceeds 30 mm, the efficiency of heat exchange decreases.
From these viewpoints, the thickness of the mold main body in the portion where heat exchange is desired is more preferably in the range of 3 mm to 15 mm, and still more preferably in the range of 5 mm to 12 mm.

(11) In the mold according to any one of (1) to (10), the groove is formed at a higher density in a portion where heat exchange is sufficiently performed than in other portions. Is preferred.

  With this configuration, heat exchange is sufficiently performed at a portion where heat exchange is desired to be sufficiently performed, so that the efficiency of heat exchange is further improved.

(12) In the mold according to any one of (1) to (11), the groove is preferably formed so that the heat exchange channel does not include a branching portion.

  With this configuration, the heat exchange fluid flows in one direction in any part of the heat exchange flow path, so that the heat exchange fluid is prevented from staying as much as possible. . For this reason, the efficiency of heat exchange further improves.

(13) In the mold according to any one of (1) to (12), it is preferable that a plurality of recesses are formed as the recesses.

  With this configuration, when heat exchange is performed particularly in a large mold, the heat exchange efficiency is further improved by joining the heat exchange flow path forming blocks to the plurality of recesses.

(14) In the mold according to any one of (1) to (13), the heat exchange flow path forming block has a tapered shape in which a cross-sectional area of a distal end portion is smaller than a cross-sectional area of a proximal end portion. It is preferable to have.

  With this configuration, when the mold main body and the heat exchange flow path forming block are joined, the heat exchange flow path forming block can be smoothly inserted and arranged in the recess of the mold main body. As a result, workability is improved. In addition, since the heat exchange flow path forming block can be smoothly inserted and arranged, when the mold body and the heat exchange flow path forming block are joined using a heat resistant inorganic adhesive, It becomes easy to make the thickness of the inorganic adhesive uniform and thin, and the quality of the mold is further improved. In addition, the efficiency of heat exchange is improved.

(15) In the mold according to any one of (1) to (14), the heat exchange flow path forming block is preferably made of the same material as the mold body.

By comprising in this way, the linear expansion coefficient of a metal mold | die main body and the block for heat exchange flow path formation becomes the same, and deterioration of the metal mold | die by repeating a formation process can be suppressed as much as possible.
In this case, when the mold is used as, for example, a mold for aluminum die casting, die steel can be used for both the mold body and the heat exchange flow path forming block.
The mold body and the heat exchange flow path forming block may be made of different materials. In this case, it is preferable that the linear expansion coefficients of the mold body and the heat exchange flow path forming block be as close as possible.

(16) In the mold according to any one of (1) to (14), it is preferable that the heat exchange flow path forming block is made of a material that is less likely to rust than the mold body.

The heat exchange flow path forming block tends to be rusted by passage of a heat exchange fluid (for example, water) as compared with the mold body. For this reason, when the heat exchange flow path forming block is made of a material that is less likely to rust than the mold body, the heat exchange flow path forming block is less likely to rust and the life of the mold is extended.
In this case, when the die is used as, for example, a die for aluminum die casting, die steel can be used for the die body, and stainless steel can be used for the heat exchange flow path forming block.

(17) In the mold according to any one of (1) to (16), it is preferable that there is no step between the bottom surface of the mold body and the bottom surface of the heat exchange flow path forming block. .

  As described above, in the molding process, the mold is nested in the mother mold and placed under the pressure from the mother mold or the slide core. For this reason, when there is no step between the bottom surface of the mold body and the bottom surface of the heat exchange flow path forming block, the mold is favorably supported by the mother mold and the slide core, so that the molding process Will stabilize and improve product quality. In addition, the life of the mold is extended. Furthermore, the leakage of the heat exchange fluid is suppressed as much as possible.

(18) The mold of the present invention has a mold body having a recess on the back side of a portion where heat exchange is desired, a shape corresponding to the recess of the mold body, and a heat exchange channel inside. A heat exchange flow path forming block formed, and the mold body and the heat exchange flow path forming block are bonded together by a heat-resistant inorganic adhesive. .

  Therefore, according to the mold of the present invention, the mold is divided into the mold main body and the heat exchange flow path forming block, and the heat exchange flow path is formed inside the heat exchange flow path forming block. Therefore, it is not necessary to cut out the inside of the mold (mold body) to form a heat exchange channel, and the manufacturing cost of the mold can be reduced. In addition, it becomes easy to form a heat exchange channel at an appropriate location inside the mold, and a mold having sufficient heat exchange performance can be manufactured.

  Further, according to the mold of the present invention, the mold body and the heat exchange flow path forming block can be manufactured by adhering and bonding with a heat-resistant inorganic adhesive. No longer exposed to high pressure. For this reason, the accuracy of the surface that defines a part of the cavity (the surface that contacts the hot water) is not deteriorated, and the product quality can be prevented from being deteriorated. In addition, this makes it possible to form a surface that defines part of the cavity (the surface that contacts the hot water) before the joining process, which simplifies the process of manufacturing the mold and the manufacturing cost of the mold. Can be easily reduced.

  In addition, according to the mold of the present invention, it can be manufactured by adhering the mold body and the heat exchange flow path forming block with a heat-resistant inorganic adhesive, so that it is expensive and special discharge plasma. There is no need to use a sintering apparatus, and the manufacturing cost of the mold can be reduced. Further, even if the joining surface of the mold body and the heat exchange flow path forming block is not a flat surface, they can be joined (for example, a curved surface or a rough surface is also possible), and thus a mold that can be manufactured. Restrictions on the shape and size of the mold can be greatly relaxed.

  The mold of the present invention can be suitably used for all of die casting molds, glass molding molds, rubber molding molds, and resin molding molds.

(19) In the mold according to (18) above, it is preferable that a joint surface between the mold body and the heat exchange flow path forming block is exposed on a bottom surface of the mold.

  By comprising in this way, a joint surface will be exposed to the bottom face of a metal mold | die. For this reason, compared with the case where the joint surface is exposed on the side surface of the mold, the portion where the joint surface is exposed is more stably supported by the mother die and the slide core, so that the heat exchange fluid leaks. Is suppressed as much as possible. Also, in this case, the portion where the joint surface is exposed is the farthest away from the surface that defines part of the cavity (the surface that contacts the hot water), so even if the heat exchange fluid leaks, Damage to molds and product defects are suppressed as much as possible.

(20) The mold of the present invention has a mold body having a recess on the back side of a portion where heat exchange is desired, and a shape corresponding to the recess of the mold body, and forms a heat exchange channel. And a heat exchange flow path forming block formed with a groove for bonding, wherein a bonding surface between the mold main body and the heat exchange flow path forming block is formed on a bottom surface of the mold. It is exposed.

  For this reason, according to the metal mold | die of this invention, a joint surface is exposed to the bottom face of a metal mold | die. For this reason, compared with the case where the joint surface is exposed on the side surface of the mold, the portion where the joint surface is exposed is more stably supported by the mother die and the slide core, so that the heat exchange fluid leaks. Is suppressed as much as possible. Also, in this case, the portion where the joint surface is exposed is the farthest away from the surface that defines part of the cavity (the surface that contacts the hot water), so even if the heat exchange fluid leaks, Damage to molds and product defects are suppressed as much as possible.

(21) A mold manufacturing method according to the present invention is a mold manufacturing method for manufacturing the mold according to any one of (1) to (6) above, wherein a part to be heat exchanged is manufactured. A step of preparing a mold body having a recess on the back surface side, and a heat exchange channel having a shape corresponding to the recess of the mold body and having a groove for forming the heat exchange channel The method includes a step of preparing a forming block, and a bonding step of bonding the mold body and the heat exchange flow path forming block by bonding with a heat-resistant inorganic adhesive.

  For this reason, according to the manufacturing method of the metal mold | die of this invention, the metal mold | die excellent as mentioned above is joined by adhere | attaching a metal mold main body and the block for heat exchange flow path formation with a heat resistant inorganic adhesive agent. Thus, it is possible to manufacture with such an extremely simple method that the manufacturing cost of such a mold can be made extremely inexpensive.

(22) In the mold manufacturing method according to (21), in the joining step, the heat-resistant inorganic adhesive is applied to at least one of the mold body and the heat exchange flow path forming block. It is preferable to include a process and a process of heating the mold body and the heat exchange flow path forming block in a pressed state in this order.

By configuring in this way, a heat-resistant inorganic adhesive is applied to at least one of the mold body and the heat exchange channel forming block, and then the mold body and the heat exchange channel forming block are pressed. It is possible to firmly join the mold body and the heat exchange flow path forming block simply by heating at. In this case, according to the experiment by the inventors of the present invention, the mold main body and the heat exchange flow path forming block can be firmly joined by heating at a relatively low temperature of 50 ° C. to 200 ° C. For this reason, in the process of joining the mold main body and the heat exchange flow path forming block, the accuracy of the surface defining the part of the cavity in the mold main body (surface on which hot water contacts) is not deteriorated.
It is more preferable to apply a heat-resistant inorganic adhesive to both the mold body and the heat exchange flow path forming block. Thereby, it becomes possible to join the mold body and the heat exchange flow path forming block more firmly.

(23) In the mold manufacturing method according to the above (21) or (22), after the joining step, the bottom surface of the heat exchange flow path forming block is ground, and the mold body and the heat It is preferable to further include a step of eliminating a step with the exchange flow path forming block.

As described above, in the molding process, the mold is nested in the mother mold and placed under the pressure from the mother mold or the slide core. For this reason, when there is no step between the bottom surface of the mold body and the bottom surface of the heat exchange flow path forming block, the mold is favorably supported by the mother mold and the slide core, so that the molding process Will stabilize and improve product quality. In addition, the life of the mold is extended. Furthermore, the leakage of the heat exchange fluid is suppressed as much as possible.
In addition, it is preferable to form the heat exchange flow path forming block in such a dimension that the bottom surface protrudes slightly from the bottom surface of the mold body when joining.

(24) A mold manufacturing method according to the present invention is a mold manufacturing method for manufacturing the mold according to any one of (1) to (20) above, wherein Forming a predetermined recess on the back side of the portion where heat exchange is desired, and supplying a customer with a heat exchange flow path forming block having a shape corresponding to the predetermined recess. It is characterized by that.

  Therefore, according to the mold manufacturing method of the present invention, the heat exchange performance of the mold that the customer is currently using or intends to use can be improved by a simple method. That is, in such a case, a predetermined recess is formed on the back side of the part where heat exchange performance in the mold is desired to be improved, and then the customer has a shape corresponding to the predetermined recess. A heat exchange channel forming block is supplied. Thereby, the heat exchange performance of a metal mold | die improves easily by integrating the metal mold main body in which the predetermined | prescribed recessed part was formed with the customer, and the block for heat exchange flow path formation supplied to the customer.

(25) The heat exchange flow path forming block of the present invention is a heat exchange flow path forming block for use in the mold according to any one of the above (1) to (20), wherein the mold body It has the shape corresponding to the recessed part of this.

  For this reason, according to the block for heat exchange channel formation of the present invention, it becomes possible to constitute an excellent mold as described above by combining with the mold body.

(26) In the heat exchange flow path forming block described in (25) above, it is preferable that the cross-sectional area of the distal end portion has a tapered shape smaller than the cross-sectional area of the proximal end portion.

  With this configuration, when the mold main body and the heat exchange flow path forming block are joined, the heat exchange flow path forming block can be smoothly inserted and arranged in the recess of the mold main body. As a result, workability is improved. In addition, since the heat exchange flow path forming block can be smoothly inserted and arranged, when the mold body and the heat exchange flow path forming block are joined using a heat resistant inorganic adhesive, It becomes easy to make the thickness of the inorganic adhesive uniform and thin, and the quality of the mold is further improved. In addition, the efficiency of heat exchange is improved.

(27) The molded product of the present invention is a molded product manufactured using the mold according to any one of (1) to (20) above.

For this reason, since the molded product of the present invention is a molded product manufactured using the excellent mold as described above, it becomes a molded product with high quality and low manufacturing cost.
Examples of such molded products include metal products such as aluminum, zinc, and magnesium when the mold is a die casting mold. When the mold is a glass mold, various glass products are exemplified. When the mold is a rubber mold, various rubber products are exemplified. When the mold is a mold for resin, various resin products are exemplified.

It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 1. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 2. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 3. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 4. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 5. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 6. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 7. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 8. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 8. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 8. FIG. It is a figure shown in order to demonstrate the metal mold | die which concerns on Embodiment 9. FIG. It is a figure shown in order to demonstrate the conventional metal mold | die. It is a figure shown in order to demonstrate another conventional metal mold | die.

  Hereinafter, the metal mold | die of this invention, the manufacturing method of a metal mold | die, the block for heat exchange flow path formation, and a molded product are demonstrated based on embodiment shown in a figure.

Embodiment 1
FIG. 1 is a view for explaining a mold 120A according to the first embodiment. FIG. 1A is a cross-sectional view of a matching mold 110 provided with a mold 120A, and FIG. 1B is a top view of a heat exchange flow path forming block 140A used for the mold 120A. FIG. 1C is a bottom view of the heat exchange flow path forming block 140A used for the mold 120A, and FIG. 1D is a perspective view of the heat exchange flow path forming block 140A used for the mold 120A. e) is a top view of a mold body 130A used in the mold 120A, FIG. 1 (f) is a bottom view of the mold body 130A used in the mold 120A, and FIG. 1 (g) is used in the mold 120A. FIG. 1H is a perspective view of a mold body 130A used for the mold 120A, as seen from an angle different from that in FIG. 1G.

As shown in FIG. 1A, the matching mold 110 includes a mold 120A and a mold 120B. The mold 120A has a mold body 130A having a recess C ₂ (see FIG. 1 (h)) on the back side of a portion where heat exchange is desired, and heat having a shape corresponding to the recess C ₂ of the mold body 130A. The exchange flow path forming block 140A (see FIG. 1D) is provided. In the heat exchange flow path forming block 140A, as shown in FIGS. 1A to 1D, grooves 142A and 144A for forming a heat exchange flow path and holes serving as heat exchange flow paths are formed. 146A is formed. The mold body 130A and the heat exchange flow path forming block 140A are bonded with a heat-resistant inorganic adhesive (not shown).

Note that the mold 120B basically has the same configuration as the mold 120A, and therefore the description of the mold 120B will be omitted for the sake of simplicity.
In addition, the recesses of the mold main body 130A and the corners of the heat exchange flow path forming block 140A are actually rounded, but are omitted in FIG. Further, in FIG. 1, detailed structures such as gates, gates, runners, pins, etc. in the metal mold are shown in a truncated form.

  According to the mold 120A according to the first embodiment, the mold 120A is divided into the mold main body 130A and the heat exchange flow path forming block 140A, and the heat exchange flow path is formed between them. There is no need to cut out the inside of the mold to form a cooling flow path, and the manufacturing cost of the mold can be reduced. Moreover, it becomes easy to form the heat exchange flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

  Further, according to the mold 120A according to the first embodiment, the mold body 130A and the heat exchange flow path forming block 140A are manufactured by bonding and bonding with a heat-resistant inorganic adhesive (not shown). The mold body is not exposed to high temperature and high pressure. For this reason, the precision of the surface (surface which contacts hot water) which prescribes | regulates a part of cavity S (refer Fig.1 (a)) is no longer deteriorated, and it can suppress that the quality of a product deteriorates. . Moreover, since the surface (surface which contacts hot water) which prescribes | regulates a part of cavity S can be formed before a joining process by this, the process of manufacturing a metal mold | die becomes simple, and manufacture of a metal mold | die. Cost can be easily reduced.

  Further, according to the mold 120A according to the first embodiment, the mold body 130A and the heat exchange flow path forming block 140A are manufactured by bonding and bonding with a heat-resistant inorganic adhesive (not shown). It is not necessary to use an expensive and special discharge plasma sintering apparatus, and the manufacturing cost of the mold can be reduced.

  The mold 120A according to the first embodiment is an aluminum die casting mold. Further, the heat exchange channel is used as a cooling channel.

  In the mold of the present invention, a groove may be formed in the concave portion of the mold body, but it is actually not easy to process the groove with respect to the concave portion. On the other hand, when the groove is formed in the heat exchange flow path forming block 140A like the mold 120A according to the first embodiment, the groove is processed with respect to the convex portion. Groove formation is facilitated. The groove can be processed by, for example, cutting with a ball end mill. Thereby, since the formation surface of a groove | channel becomes a smooth surface, the resistance at the time of the fluid for heat exchange flowing through the flow path for heat exchange can be made small.

  In the mold 120A according to the first embodiment, the heat exchanging flow path forming block 140A includes a heat exchanging flow in addition to the grooves 142A and 144A as shown in FIGS. 1 (b) to 1 (d). A hole 146A to be a path is formed. For this reason, the heat exchange channel can be formed three-dimensionally, and the design and arrangement of the heat exchange channel in the mold is facilitated.

  In the mold 120A according to the first embodiment, as shown in FIG. 1, the joint surface between the mold main body 130A and the heat exchange flow path forming block 140A is the bottom surface of the mold 120A (the most in FIG. 1A). It is exposed on the lower surface.

  For this reason, in the metal mold | die 120A which concerns on Embodiment 1, compared with the case where a joint surface is exposed to the side surface of a metal mold | die, the part which a joint surface exposes is supported more stably by a mother mold. As a result, the leakage of the heat exchange fluid is suppressed as much as possible. Further, in this case, since the portion where the joint surface is exposed is located farthest from the surface that defines a part of the cavity S (the surface that contacts the hot water), even if the heat exchange fluid leaks, In addition, the occurrence of damage to the mold or the like and product defects are suppressed as much as possible.

  In the mold 120A according to the first embodiment, a silica-based one-component heat-curable inorganic adhesive (Aron Ceramic C, Toagosei Co., Ltd.) is used as the heat-resistant inorganic adhesive.

  For this reason, since it is not necessary to mix a plurality of liquids when applying the heat-resistant inorganic adhesive, workability at the time of bonding and joining the mold main body 130A and the heat exchange flow path forming block 140A is improved. To do. In addition, after application of the heat-resistant inorganic adhesive, the heat exchange channel forming block 140A is pressed against the mold body 130A under relatively mild conditions (for example, 50 ° C. to 200 ° C.). The mold body 130 </ b> A and the heat exchange flow path forming block 140 </ b> A can be firmly joined simply by leaving them alone.

  Silica-based inorganic adhesive has a relatively large linear expansion coefficient and good followability to the surface to be joined, so that it is suitable for a mold having a relatively large linear expansion coefficient. By using a heat-resistant inorganic adhesive, the life of the mold can be extended.

  In the metal mold | die of this invention, it is preferable that the film thickness of a heat resistant inorganic adhesive agent exists in the range of 3 micrometers-300 micrometers. That is, when the film thickness of the heat resistant inorganic adhesive is less than 3 μm, it becomes difficult to make the film thickness of the heat resistant inorganic adhesive uniform. On the other hand, when the film thickness of the heat-resistant inorganic adhesive exceeds 300 μm, it is not easy to maintain the positional accuracy of the heat exchange flow path forming block with respect to the mold body. In addition, the efficiency of heat exchange decreases.

  For this reason, in the metal mold | die 120A which concerns on Embodiment 1, the film thickness of a heat resistant inorganic adhesive agent shall be in the range of 10 micrometers-100 micrometers.

  In the mold 120A according to the first embodiment, the joint surface of the mold body 130A and the joint surface of the heat exchange flow path forming block 140A are both rough in which the arithmetic average roughness (Ra) is in the range of 10 μm to 30 μm. Surface.

  In the mold of the present invention, both the bonding surface of the mold body and the bonding surface of the heat exchange flow path forming block can be mirror surfaces. However, in the mold 120A according to the first embodiment, both the bonding surface of the mold main body 130A and the bonding surface of the heat exchange flow path forming block 140A are roughened. Even in such a case, the heat exchange flow path forming block 140A can be firmly joined to the mold body 130A.

  In the mold of the present invention, the wall thickness between the recess of the mold body constituting a part of the cavity and the recess for inserting the heat exchange flow path forming block is in the range of 2 mm to 30 mm. It is preferable. That is, when the thickness is 2 mm or less, it is difficult to ensure the necessary strength in the mold body. On the other hand, if the thickness exceeds 30 mm, the efficiency of heat exchange decreases.

For this reason, in the mold 120A according to the first embodiment, the recess C ₁ (see FIG. 1G) of the mold body 130A and the recess C ₂ for inserting the heat exchange flow path forming block 140A. The wall thickness between them is in the range of 5 mm to 12 mm.

  In the mold 120 </ b> A according to the first embodiment, the groove is a portion where heat exchange is sufficiently performed (a portion where the groove 142 </ b> A is formed) than in other portions (a portion where the groove 144 </ b> A is formed). It is formed with high density.

  For this reason, since heat exchange is sufficiently performed at a portion where heat exchange is desired to be sufficiently performed, the efficiency of heat exchange is further improved.

  In the mold 120 </ b> A according to the first embodiment, the grooves 142 </ b> A and 144 </ b> A are formed so that the heat exchange channel does not include a branching portion.

  For this reason, since the flow of the heat exchanging fluid is a unidirectional flow in any part of the heat exchanging flow path, the heat exchanging fluid is prevented from staying as much as possible. For this reason, the efficiency of heat exchange further improves.

  In the mold 120A according to the first embodiment, as shown in FIG. 1A to FIG. 1D, the heat exchange flow path forming block 140A has a cross-sectional area at the distal end portion larger than a cross-sectional area at the base end portion. Has a small taper shape.

Therefore, when performing bonding with the die body 130A and the heat exchange flow path forming block 140A, that the recess C ₂ of the mold body 130A is inserted and disposed heat exchange flow path forming block 140A smoothly It becomes possible to improve workability. Further, since the heat exchange flow path forming block 140A can be smoothly inserted and arranged, it becomes easy to make the thickness of the heat-resistant inorganic adhesive uniform and thin, and the quality of the mold is further improved. In addition, the efficiency of heat exchange is improved.

  In the mold 120A according to the first embodiment, the mold body 130A and the heat exchange flow path forming block 140A both use die steel (SKD61) made of the same material.

  For this reason, the linear expansion coefficient of the mold main body 130A and the heat exchange flow path forming block 140A are the same, and deterioration of the mold due to repeating the molding process can be suppressed as much as possible.

  In the mold of the present invention, the heat exchange flow path forming block can be made of a material that is less likely to rust than the mold body.

In this case, the heat exchange flow path forming block tends to be rusted by passage of the heat exchange fluid (for example, water) as compared with the mold body. Is made of a material that is less likely to rust than the mold body, the heat exchange flow path forming block is less likely to rust and the life of the mold is extended.
In this case, die steel can be used for the mold body, and stainless steel can be used for the heat exchange flow path forming block.

  In the mold 120A according to the first embodiment, there is no step between the bottom surface of the mold body 130A and the bottom surface of the heat exchange flow path forming block 140A.

  For this reason, since the mold 120A is favorably supported by the mother die, the molding process is stabilized and the quality of the product is improved. In addition, the life of the mold is extended. Furthermore, the leakage of the heat exchange fluid is suppressed as much as possible.

  The mold 120A according to the first embodiment has been described above, but the mold 120A according to the first embodiment can be manufactured by a manufacturing method including the following steps (1) to (3).

(1) preparing a mold body 130A having a recess C ₂ for inserting recess C ₁ and the heat exchange flow path forming block 140A for defining the process cavity S of preparing the mold body. In this case, the mold having the concave portion C ₁ and the concave portion C ₂ may be designed and manufactured from the beginning. First, the mold having the concave portion C ₁ is manufactured, and then the concave portion C is formed at a necessary place. ₂ may be formed.

(2) has a shape corresponding to the concave portion _{C 2} steps mold body 130A of preparing a heat exchange passage forming block, a groove 142A for forming a heat exchange channel, the 144A and holes 146A are formed The heat exchange flow path forming block 140A is prepared.

(3) Joining step The die body 130A and the heat exchange flow path forming block 140A are joined together by bonding them with a heat-resistant inorganic adhesive. In this bonding step, the heat-resistant inorganic adhesive is applied to both the mold main body 130A and the heat exchange flow path forming block 140A, and the mold main body 130A and the heat exchange flow path forming block 140A are pressed. And heating in this order. Heating is performed by placing the mold in a dryer and gradually raising the temperature from room temperature to 200 ° C.

  Therefore, according to the mold manufacturing method according to the first embodiment, the mold 120A according to the first embodiment is bonded to the mold main body 130A and the heat exchange flow path forming block 140A with a heat-resistant inorganic adhesive. As a result, it becomes possible to manufacture by a very simple method of joining, and the manufacturing cost of the mold can be made extremely inexpensive.

  Further, according to the mold manufacturing method according to the first embodiment, the heat-resistant inorganic adhesive is applied to both the mold body 130A and the heat exchange flow path forming block 140A, and then the mold body 130A and the heat exchange flow The mold body 130 </ b> A and the heat exchange flow path forming block 140 </ b> A can be firmly joined only by heating in a state where the path forming block 140 </ b> A is pressed. Further, the mold main body 130A and the heat exchange flow path forming block 140A can be firmly joined by heating at a relatively low temperature up to 200 ° C. For this reason, in the process of joining the mold main body 130A and the heat exchange flow path forming block 140A, the accuracy of the surface defining the cavity S in the mold main body 130A (the surface on which hot water contacts) is deteriorated. Disappears.

In the method of manufacturing a mold according to the first embodiment, the heat exchange flow path forming block 140A, slightly longer than the length in the depth direction of the concave portion C ₂ of the mold body 130A the length of the height direction It is formed as follows. Then, after joining the mold main body 130A and the heat exchange flow path forming block 140A, the bottom surface of the heat exchange flow path forming block 140A is ground to obtain the mold main body 130A and the heat exchange flow path forming block 140A. A step of eliminating the step may be further included.

  With this configuration, there is no step between the bottom surface of the mold main body 130A and the bottom surface of the heat exchange flow path forming block 140A, so that the mold is better supported by the mother die. For this reason, a molding process is stabilized and the quality of a product improves. In addition, the life of the mold is extended. Furthermore, the leakage of the heat exchange fluid is suppressed as much as possible.

  The heat exchange flow path forming block 140A in the mold 120A according to the first embodiment can be circulated by itself independently of the mold body 130A.

  By performing die casting of aluminum using the mold according to the first embodiment, it is possible to manufacture a die casting product of aluminum with high quality and low manufacturing cost.

[Embodiment 2]
FIG. 2 is a view for explaining the mold 220A according to the second embodiment. 2A is a cross-sectional view of the matching mold 210 provided with the mold 220A, and FIG. 2B is a top view of the mold 220A.

As shown in FIG. 2, the mold 220 </ b> A according to the second embodiment has a mold body 230 </ _b > A having _two recesses C ₂ and C ₂ (not shown) on the back side of the surface defining a part of the cavity S. And two heat exchange flow path forming blocks 240A and 240A having shapes corresponding to the recesses C ₂ and C ₂ of the mold body 230A. Each recess _{C 2} in the die body 230A has the same shape as the recess _{C 2} of the mold body 130A in a mold 120A according to the first embodiment. Each heat exchange channel forming block 240A has the same configuration as the heat exchange channel forming block 140A in the mold 120A according to the first embodiment.

  Therefore, according to the mold 220A according to the second embodiment, the heat exchange efficiency is improved by using the two heat exchange flow path forming blocks 240A and 240A, particularly when performing heat exchange in a large mold. Further improve.

[Embodiment 3]
FIG. 3 is a view for explaining a mold 320A according to the third embodiment. 3A is a cross-sectional view of a matching mold 310 provided with a mold 320A, and FIG. 3B is a top view of the mold 320A.

As shown in FIG. 3, the mold 320 </ b> A according to the third embodiment includes two recesses C ₁ and C ₁ (not shown) that define a part of the cavity S and the back surfaces of these recesses C ₁ and C ₁ . A mold body 330A having a single recess C ₂ (not shown) formed so as to straddle these recesses C ₁ and C ₁ on the side, and a shape corresponding to the recess C ₂ of the mold body 330A And a single heat exchange flow path forming block 340A.

Therefore, according to the mold 320A according to the third embodiment, as compared with the die 220A according to the second embodiment, there is an effect that the recess C ₂ in die body 330A can be easily formed. Further, according to the mold 320A according to the third embodiment, the number of heat exchange flow path forming blocks to be used can be reduced as compared with the mold 220A according to the second embodiment. Manufacturing of 340A and joining work between the mold main body 330A and the heat exchange flow path forming block 340A can be simplified.

[Embodiment 4]
FIG. 4 is a view for explaining a mold 420A according to the fourth embodiment. 4A is a cross-sectional view of a mating die 410 provided with a die 420A, and FIG. 4B is a top view of a heat exchange channel forming block 440A used in the die 420A. c) is a bottom view of the heat exchange flow path forming block 440A used in the mold 420A.

  The mold 420A according to the fourth embodiment basically has the same structure as the mold 120A according to the first embodiment, but the structure of the heat exchange flow path forming block 440A is according to the first embodiment. It is different from the heat exchange flow path forming block 140A in the mold 120A. That is, in the heat exchange flow path forming block 440A in the mold 420A according to the fourth embodiment, as shown in FIG. 4, a groove 442A is formed on the upper surface, and a through hole 444A communicating with the groove 442A is formed inside. Is formed. For this reason, unlike the case of the heat exchange flow path forming block 140A in the mold 120A according to the first embodiment, a groove communicating with the groove 442A formed on the upper surface is not formed on the side surface.

  As described above, in the mold 420A according to the fourth embodiment, a part of the structure of the heat exchange flow path forming block 440A is the heat exchange flow path forming block 140A in the mold 120A according to the first embodiment. However, since the other configuration is the same as that of the mold 120A according to the first embodiment, the same effect as that of the mold 120A according to the first embodiment can be obtained.

[Embodiment 5]
FIG. 5 is a view for explaining a mold 520A according to the fifth embodiment. FIG. 5A is a cross-sectional view of a matching mold 510 provided with a mold 520A, and FIG. 5B is a top view of a heat exchange flow path forming block 540A used in the mold 520A. c) is a longitudinal sectional view of a heat exchange flow path forming block 540A used in the mold 520A.
In FIGS. 5B and 5C, reference numeral 542A indicates a groove, and reference numeral 544A indicates a through hole.

The mold 520A according to the fifth embodiment basically has the same structure as the mold 420A according to the fourth embodiment, but the cross-sectional shape of the heat exchange channel forming block 540A is circular (accordingly, The point of the recess C ₂ (not shown) of the mold body 530A is also circular, and the mold body 530A and the heat exchange channel forming block 540A are joined by using an O-ring. This is different from the case of the mold 420A according to the fourth embodiment.

Thus, in the mold 520A according to the fifth embodiment, the heat exchange flow path forming block 540A and the cross-sectional shape of the concave portion _{C 2} of the mold body 530A and die body 530A and the heat exchange flow path forming block 540A Is different from the mold 420A according to the fourth embodiment, but the mold 520A is divided into a mold body 530A and a heat exchange flow path forming block 540A, and heat exchange is performed between them. Since the flow path for forming is formed, similarly to the case of the mold 420A according to the fourth embodiment, it is not necessary to cut out the inside of the mold to form the flow path for cooling, thereby reducing the manufacturing cost of the mold. be able to. Moreover, it becomes easy to form the heat exchange flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

Further, according to the mold 520A according to the fifth embodiment, the mold main body 530A and the heat exchange flow path forming block 540A are joined by using an O-ring, and therefore the mold 420A according to the fourth embodiment. As in the case of, the mold body is not exposed to high temperature and high pressure. For this reason, the accuracy of the recess C ₁ (not shown) is not deteriorated, and it is possible to suppress the deterioration of the product quality. This also makes it possible to perform the formation of the recesses C ₁ prior to the bonding step, a step of producing a mold is simplified, so that can be easily achieves low production cost of the mold.

  Moreover, since the mold 520A according to the fifth embodiment is manufactured by caulking the mold body 530A and the heat exchange flow path forming block 540A, it is necessary to use an expensive and special discharge plasma sintering apparatus. The manufacturing cost of the mold can be reduced.

  In the mold 520A according to the fifth embodiment, the O-ring 560A is provided on the joint surface between the mold main body 530A and the heat exchange flow path forming block 540A. Even when leaking from the heat exchange channel, this fluid does not leak to the outside from the concave portion of the mold body, and safety is improved.

[Embodiment 6]
FIG. 6 is a view for explaining the mold 620A according to the sixth embodiment. 6A is a cross-sectional view of a mating mold 610 provided with a mold 620A, and FIG. 6B is a top view of a heat exchange flow path forming block 640A used in the mold 620A. c) is a longitudinal sectional view of a heat exchange channel forming block 640A used in the mold 620A.

  The mold 620A according to the sixth embodiment basically has the same structure as the mold 120A according to the first embodiment, but the heat exchange flow path is formed in the heat exchange flow path forming block 640A. This is different from the mold 120 </ b> A according to the first embodiment in that a hole 642 </ b> A constituting a heat exchange channel is formed inside instead of a groove for performing the above.

  Thus, in the mold 620A according to the sixth embodiment, the structure of the heat exchange flow path forming block 640A is different from that of the mold 120A according to the first embodiment, but the mold 620A is a mold. Since the main body 630A and the heat exchange channel forming block 640A are divided and the holes 642A constituting the heat exchange channel are formed inside the heat exchange channel forming block 640A, the gold according to the first embodiment As in the case of the mold 120A, it is not necessary to cut out the interior of the mold (mold body) to form a cooling flow path, and the manufacturing cost of the mold can be reduced. Moreover, it becomes easy to form the heat exchange flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

  In other respects, the mold 620A according to the sixth embodiment has the same configuration as the mold 120A according to the first embodiment, and thus has the same effect as the mold 120A according to the first embodiment.

[Embodiment 7]
FIG. 7 is a view for explaining a mold 720A according to the seventh embodiment. FIG. 7A is a cross-sectional view of a mating mold 710 provided with a mold 720A, and FIG. 7B is a top view of a heat exchange flow path forming block 740A used for the mold 720A. c) is a longitudinal sectional view of a heat exchange channel forming block 740A used in the mold 720A.

  The mold 720A according to the seventh embodiment basically has the same structure as the mold 620A according to the sixth embodiment, but the mold body 730A and the heat exchange flow path forming block 740A are O-rings. This is different from the case of the mold 620A according to the sixth embodiment in that the two are joined together.

  Thus, in the mold 720A according to the seventh embodiment, the method of joining the mold main body 730A and the heat exchange flow path forming block 740A is different from that in the mold 620A according to the sixth embodiment. The mold 720A is divided into the mold body 730A and the heat exchange channel forming block 740A, and the holes 742A constituting the heat exchange channel are formed inside the heat exchange channel forming block 740A. As in the case of the mold 620A according to the sixth embodiment, it is not necessary to cut out the inside of the mold to form a cooling flow path, and the manufacturing cost of the mold can be reduced. Moreover, it becomes easy to form the heat exchange flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

  In the mold 720A according to the seventh embodiment, the O-ring 760A is provided on the joint surface between the mold main body 730A and the heat exchange flow path forming block 740A. Even when leaking from the heat exchange channel, this fluid does not leak to the outside from the concave portion of the mold body, and safety is increased.

  The mold 720A according to the seventh embodiment has the same configuration as that of the mold 620A according to the sixth embodiment except for the above, and thus has the same effect as the mold 620A according to the sixth embodiment.

[Embodiment 8]
FIG. 8 is a view for explaining the molds 820C and 820D according to the eighth embodiment. FIG. 8A is a partial cross-sectional view of a laminated mold 810 including the molds 820C and 820D and other molds 820A and 820B, and FIG. 8B is a cross-sectional view taken along the line A3-A3 in FIG. FIG. 8C is a cross-sectional view of the mold 820A, and FIG. 8C is an exploded perspective view of the mating mold 810.

  FIG. 9 is a view for explaining the mold 820C among the molds 820C and 820D according to the eighth embodiment. FIG. 9A is a side view of a mold body 830C in the mold 820C, FIG. 9B is a side view of a heat exchange flow path forming block 840C in the mold 820C, and FIG. FIG. 9D and FIG. 9E are photographs taken from different directions of the heat exchange channel forming block 840C in the mold 820C, respectively. is there.

FIG. 10 is a view for explaining the mold 820D among the molds 820C and 820D according to the eighth embodiment. FIG. 10A is a side view of a mold body 830D in the mold 820D, and FIG. 10B is a side view of a heat exchange flow path forming block 840D in the mold 820D. FIG. 10D is a photograph of the mold body 830D and the heat exchange flow path forming block 840D in the mold 820D taken from different angles.
In addition, in FIG. 8, FIG. 9 (a), FIG. 9 (b), FIG. 10 (a), and FIG. 10 (b), a part of the groove | channel and through-hole in metal mold | die 820C, 820D should be abbreviate | omitted and shown. And

  A mating die 810 in the eighth embodiment is a mating die for manufacturing a cylindrical aluminum die-cast product, and as shown in FIG. 8, a die 820A, a die 820B, a die 820C, and a die. 820D is provided. Therefore, the mold 820C and the mold 820D according to the eighth embodiment are different in mold shape and structure from the molds 120A to 720A according to the first to seventh embodiments.

  As described above, the molds 820C and 820D according to the eighth embodiment are different from the molds 120A to 720A according to the first to seventh embodiments in the shape and structure of the mold, but the molds 820C and 820D according to the eighth embodiment are different from each other. 9 and 10, each of the mold main bodies 830C and 830D having a recess on the back surface side of the portion where heat exchange is desired, and heat having a shape corresponding to the recess of the mold main bodies 830C and 830D. Replacement flow path forming blocks 840C and 840D are provided. Further, grooves 842C and 842D for forming heat exchange channels are formed in the heat exchange channel forming blocks 840C and 840D. The mold bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D are bonded with a heat-resistant inorganic adhesive.

  Therefore, according to the molds 820C and 820D according to the eighth embodiment, the molds 820C and 820D are divided into the mold main bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D, and the heat is generated between them. Since the replacement flow path is formed, it is not necessary to cut out the inside of the mold to form the cooling flow path, and the manufacturing cost of the mold can be reduced. Further, it becomes easy to form a cooling flow path at an appropriate location inside the mold, and a mold having sufficient cooling performance can be manufactured.

  Further, according to the molds 820C and 820D according to the eighth embodiment, the mold main bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D are bonded together by bonding with a heat-resistant inorganic adhesive. . For this reason, the mold body is not exposed to high temperature and high pressure. For this reason, the precision of the surface (surface which contacts hot water) which prescribes | regulates a part of cavity S (not shown) does not deteriorate, and it can suppress that the quality of a product deteriorates. Moreover, since the surface (surface which contacts hot water) which prescribes | regulates a part of cavity S can be formed before a joining process by this, the process of manufacturing a metal mold | die becomes simple, and manufacture of a metal mold | die. Cost can be easily reduced.

  In addition, the molds 820C and 820D according to the eighth embodiment can be manufactured by bonding and bonding the mold main bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D with a heat-resistant inorganic adhesive. Therefore, it is not necessary to use an expensive and special discharge plasma sintering apparatus, and the manufacturing cost of the mold can be reduced. Moreover, although the joining surfaces of the mold bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D are both curved surfaces, they can be satisfactorily joined using a heat-resistant inorganic adhesive without any problem.

  In the mold of the present invention, a groove may be formed in the concave portion of the mold body, but it is actually not easy to process the groove with respect to the concave portion. On the other hand, as in the molds 820C and 820D according to the eighth embodiment, grooves 842C and 842D (see FIGS. 9E and 10D) are formed in the heat exchange flow path forming blocks 840C and 840D. In the case where the groove is formed, the groove is processed with respect to the convex portion, so that the groove can be easily formed. The groove can be processed by, for example, cutting with a ball end mill. Thereby, since the formation surface of a groove | channel becomes a smooth surface, the resistance at the time of the fluid for heat exchange flowing through the flow path for heat exchange can be made small.

  In the molds 820C and 820D according to the eighth embodiment, in addition to the grooves 842C and 842D, holes (not shown) serving as heat exchange channels are formed in the heat exchange channel formation blocks 840C and 840D. Has been. For this reason, the heat exchange channel can be formed three-dimensionally, and the design and arrangement of the heat exchange channel in the mold is facilitated.

  In the molds 820C and 820D according to the eighth embodiment, the joint surfaces of the mold bodies 830C and 830D and the heat exchange flow path forming blocks 840C and 840D are exposed on the bottom surfaces of the molds 820C and 820D.

For this reason, in the molds 820C and 820D according to the eighth embodiment, the portion where the joint surface is exposed is more stably supported by the slide core than when the joint surface is exposed on the side surface of the mold. become. As a result, the leakage of the heat exchange fluid is suppressed as much as possible. Further, in this case, since the portion where the joint surface is exposed is located farthest from the surface that defines a part of the cavity S (the surface that contacts the hot water), even if the heat exchange fluid leaks, In addition, the occurrence of damage to the mold or the like and product defects are suppressed as much as possible.
Here, the slide core is a member that supports the bottom surfaces of the molds 820C and 820D.

[Embodiment 9]
FIG. 11 is a view for explaining the molds 920A, 920B, 920C, and 920D according to the ninth embodiment. FIG. 11A is a partial cross-sectional view of a matching mold 910 provided with molds 920A, 920B, 920C, and 920D, and FIG. 11B is a cross-sectional view of the mold 920A in the A4-A4 cross section of FIG. FIG. 11C is an exploded perspective view of the matching mold 910. FIG.

  The molds 920C and 920D according to the ninth embodiment have the same configuration as the molds 820C and 820D according to the eighth embodiment, but the molds 920A and 920B according to the ninth embodiment are the same as those in the eighth embodiment. The molds 820A and 820B are different in structure. That is, in the molds 920A and 920B according to the ninth embodiment, as shown in FIG. 11 (b) or FIG. 11 (c), each mold body has a recess on the back surface side of a portion where heat exchange is desired. 930A and 930B, and heat exchange flow path forming blocks 940A and 940B having shapes corresponding to the concave portions of the mold main bodies 930A and 930B. Further, in the heat exchange flow path forming blocks 940A and 940B, as shown in FIG. 11B, grooves 942A and 942B (groove 942B not shown) and grooves for forming the heat exchange flow paths are formed. Through-holes 944A and 944B (not shown) communicating with 942A and 942B are formed. The mold bodies 930A and 930B and the heat exchange flow path forming blocks 940A and 940B are bonded to each other with a heat-resistant inorganic adhesive. In FIGS. 11A and 11C, the grooves and through holes in the molds 920A and 920B are omitted.

  Thus, as described above, the matching mold 910 in the ninth embodiment is not only the molds 920C and 920D but also the molds 920A and 920B having a recess on the back side of the portion where heat exchange is desired. Heat exchange flow path forming blocks 940A and 940B having shapes corresponding to the concave portions of the main bodies 930A and 930B and the mold main bodies 930A and 930B, and grooves 942A and 942B for forming the heat exchange flow paths are formed. It is a matching mold equipped with. For this reason, the matching mold 910 in the ninth embodiment is a matching mold having further excellent cooling performance as compared with the matching mold 810 in the eighth embodiment.

  In the molds 920A and 920B according to the ninth embodiment, as shown in FIG. 11C, the joint surfaces of the mold bodies 930A and 930B and the heat exchange flow path forming blocks 940A and 940B are exposed only on the bottom surface. However, the present invention is not limited to this, and the joining surface may be configured to be exposed on the side surface of the mold in addition to the bottom surface of the mold.

[Embodiment 10]
In the mold manufacturing method according to the tenth embodiment, the process of forming a predetermined recess on the back side of the part to be heat exchanged in the mold for the customer, and the customer corresponding to the predetermined recess And a step of supplying a heat exchange flow path forming block having a shape to be manufactured.

  For this reason, according to the manufacturing method of the metal mold | die which concerns on Embodiment 10, it becomes possible to improve the cooling performance of the metal mold | die which the customer is actually using or is going to use by a simple method. That is, in such a case, the customer is caused to form a predetermined recess on the back side of the portion where the cooling performance in the mold is to be improved, and then the customer is given a heat having a shape corresponding to the predetermined recess. Supply the exchange flow path forming block. Thereby, the cooling performance of a metal mold | die improves easily by integrating the metal mold | die body in which the predetermined | prescribed recessed part was formed with the customer, and the block for heat exchange flow path formation supplied to the customer.

  For this reason, according to the manufacturing method of the metal mold | die which concerns on Embodiment 10, the manufacturing method of a metal mold | die suitable for manufacturing the metal mold | die of this invention including the metal mold | die which concerns on any of Embodiment 1-9. It becomes.

  As mentioned above, although the metal mold | die of this invention, the manufacturing method of a metal mold | die, the block for heat exchange flow path formation, and a molded product were demonstrated based on said each embodiment, this invention is not limited to each said embodiment. The present invention can be implemented in various modes without departing from the gist thereof, and for example, the following modifications are possible.

(1) In the molds of the above embodiments, the heat exchange channel is used as the cooling channel, but the present invention is not limited to this. The heat exchange channel can also be used as the heating channel.

(2) In the above embodiments, the mold is used as a die casting mold for aluminum casting, but the present invention is not limited to this. The mold can be used for zinc casting, magnesium casting, and other die casting molds. The mold can also be used as a mold for molding various glass products, a mold for molding various rubber products, a mold for molding various resin products, and other molds.

(3) In each of the above embodiments, the case where the groove for forming the heat exchange channel is formed in the heat exchange channel forming block has been described, but the present invention is not limited to this. A groove for forming a heat exchange channel may be formed in the mold body, or may be formed in both the mold body and the heat exchange channel forming block.

Claims (27)

A mold body having a recess on the back side of a portion where heat exchange is desired, and a heat exchange flow path forming block having a shape corresponding to the recess of the mold body, the mold body or the heat exchange flow A mold in which a groove for forming a heat exchange channel is formed in at least one of the path forming blocks,
The metal mold body and the heat exchange flow path forming block are bonded to each other by bonding with a heat-resistant inorganic adhesive. The mold according to claim 1, wherein
The mold is characterized in that the groove is formed in the heat exchange flow path forming block. The mold according to claim 1 or 2,
A mold surface, wherein a joint surface between the mold body and the heat exchange flow path forming block is exposed on a bottom surface of the mold. In the metal mold | die in any one of Claims 1-3,
The metal mold characterized in that the heat-resistant inorganic adhesive is a thermosetting inorganic adhesive. In the metal mold | die in any one of Claims 1-4,
The metal mold according to claim 1, wherein a film thickness of the heat-resistant inorganic adhesive is in a range of 3 μm to 300 μm. In the metal mold | die in any one of Claims 1-5,
The mold characterized in that at least one of the bonding surface of the mold body and the heat exchange flow path forming block is a rough surface. A mold body having a recess on the back side of a portion where heat exchange is desired, and a heat exchange flow path forming block having a shape corresponding to the recess of the mold body, the mold body or the heat exchange flow A mold in which a groove for forming a heat exchange channel is formed in at least one of the path forming blocks,
The mold body and the heat exchange flow path forming block are joined,
A mold surface, wherein a joint surface between the mold body and the heat exchange flow path forming block is exposed on a bottom surface of the mold. The mold according to claim 7,
The mold is characterized in that the groove is formed in the heat exchange flow path forming block. The mold according to claim 7 or 8,
A mold, wherein an O-ring is provided on a joint surface between the mold body and the heat exchange flow path forming block. In the metal mold | die in any one of Claims 1-9,
The mold according to claim 1, wherein a thickness of the mold body in a portion where the heat exchange is desired is in a range of 2 mm to 30 mm. In the metal mold | die in any one of Claims 1-10,
The mold is characterized in that the groove is formed at a higher density in a portion where sufficient heat exchange is desired than in other portions. In the metal mold | die in any one of Claims 1-11,
The mold is characterized in that the groove is formed so that the heat exchange channel does not include a branch portion. In the metal mold | die in any one of Claims 1-12,
A mold having a plurality of recesses as the recesses. In the metal mold | die in any one of Claims 1-13,
The heat exchange flow path forming block has a taper shape in which a cross-sectional area of a distal end portion is smaller than a cross-sectional area of a base end portion. In the metal mold | die in any one of Claims 1-14,
The heat exchange flow path forming block is made of the same material as the mold body. In the metal mold | die in any one of Claims 1-14,
The heat exchange flow path forming block is made of a material that is less likely to rust than the mold body. In the metal mold | die in any one of Claims 1-16,
A mold having no step between the bottom surface of the mold body and the bottom surface of the heat exchange flow path forming block. A mold body having a recess on the back side of a portion where heat exchange is desired, and a heat exchange flow path formation having a shape corresponding to the recess of the mold body and having a heat exchange path formed therein With blocks,
The metal mold body and the heat exchange flow path forming block are bonded to each other by bonding with a heat-resistant inorganic adhesive. The mold according to claim 18,
A mold surface, wherein a joint surface between the mold body and the heat exchange flow path forming block is exposed on a bottom surface of the mold. A heat exchange flow having a mold body having a recess on the back side of a portion where heat exchange is desired and a shape corresponding to the recess of the mold body and having a groove for forming a heat exchange channel A mold joined with a path forming block,
A mold surface, wherein a joint surface between the mold body and the heat exchange flow path forming block is exposed on a bottom surface of the mold. A mold manufacturing method for manufacturing the mold according to any one of claims 1 to 6,
Preparing a mold body having a recess on the back side of the portion where heat exchange is desired;
Preparing a heat exchange flow path forming block having a shape corresponding to the concave portion of the mold body and having a groove for forming the heat exchange flow path;
A method for manufacturing a mold, comprising: a bonding step of bonding the mold body and the heat exchange flow path forming block by bonding with a heat-resistant inorganic adhesive. In the manufacturing method of the metallic mold according to claim 21,
The joining step includes
Applying the heat-resistant inorganic adhesive to at least one of the mold body and the heat exchange flow path forming block;
A method of manufacturing a mold, comprising: heating the mold body and the heat exchange flow path forming block in a pressed state in this order. In the manufacturing method of the metal mold according to claim 21 or 22,
After the joining step,
A method for manufacturing a mold, further comprising grinding a bottom surface of the heat exchange flow path forming block to eliminate a step between the mold body and the heat exchange flow path forming block. A mold manufacturing method for manufacturing the mold according to any one of claims 1 to 20,
For the customer, a step of forming a predetermined recess on the back side of the part where heat exchange is desired in the mold,
And a step of supplying a block for forming a heat exchange channel having a shape corresponding to the predetermined recess to the customer.   A heat exchange flow path forming block for use in the mold according to any one of claims 1 to 20, wherein the heat exchange flow path formation has a shape corresponding to a concave portion of the mold body. For block. In the heat exchange flow path forming block according to claim 25,
A block for forming a heat exchange channel, wherein the cross-sectional area of the tip end portion has a tapered shape smaller than the cross-sectional area of the base end portion.   The molded product manufactured using the metal mold | die in any one of Claims 1-20.