HEADQUARTERS

Abstract

A die (10) includes a die body (11) and a removable housing (13). The die body (11) includes a flow supply channel (113). The flow supply channel (113) is formed within the die body (11). One end of the supply channel (113) opens onto the surface of the die body (11). The flow supply channel (113) must be supplied with a temperature-adjusting fluid. The removable housing (13) is detachably mounted on the surface of the die body (11). The removable housing (13) includes an outer surface (131) that constitutes at least a portion of the forming surface of the die (10). A temperature adjustment space (S1) is provided on the surface of the die body (11) or on the removable housing (13). The temperature adjustment space (S1) is in communication with the flow supply channel (113).The detachable housing (13) is divided into a plurality of housing parts (134). The plurality of housing parts (134) are arranged in an intersection direction of the longitudinal direction of the die (10) on the surface of the die body (11).

Description

MATRIX TECHNICAL FIELD

[0001] The present invention relates to a die, more specifically, to a die used for hot pressing. TECHNICAL BACKGROUND

[0002] Hot pressing is known as a method for forming a high-strength part, such as automotive body parts. In hot pressing, a heated blank is pressed through dies attached to the pressing machine, and the blank is cooled and tempered within the dies.

[0003] Patent Literature 1 describes a hot pressing tooling. This pressing tooling consists of a punch, which is a lower die, and a die set, which is an upper die. A plurality of cooling water tubes are provided longitudinally in the punch and die set. In addition, a plurality of coolant flow channels are provided longitudinally in the punch and die set. A plurality of communication pathways opening onto the forming surface of the punch or die set are connected to each of the coolant flow channels.

[0004] When performing the pressing operation using the pressing tooling of Patent Literature 1, first, water is flowed as a coolant in each cooling water pipe to cool the punch and die set to a predetermined temperature. Next, a heated blank is placed between the punch and die set, and the die set is lowered to deform the blank. When the die set reaches bottom dead center, coolant is introduced into each coolant flow channel. The coolant introduced into the coolant flow channel is expelled from the forming surface through a communication channel. In accordance with Patent Literature 1, the blank is cooled by direct contact with the cooled punch and die set, and by the coolant expelled from the forming surface.

[0005] Patent Literatures 2 through 4 also describe a die for hot pressing. The die in Patent Literature 2 includes an outer form block having a forming surface, and an insert block inserted into the outer form block. The insert block has a plurality of coolant flow grooves on its outer surface. Each groove is formed on the outer surface of the insert block so that it substantially crosses the entire insert block in a lateral (width) direction.

[0006] The matrix of Patent Literature 3 includes a lower matrix and an upper matrix formed of a different material than the lower matrix. The upper matrix is ​​placed on top of the lower matrix and has a plurality of coolant flow grooves on its underside. These grooves are formed on the underside of the upper matrix to substantially traverse the entire upper matrix in the lateral (width) direction.

[0007] The matrix of Patent Literature 4 includes a first split body having a forming surface, and a second split body that combines with the first split body. The first split body has a groove opening into the side of the second split body. In the matrix of Patent Literature 4, a flow channel for coolant circulation is formed by a portion surrounded by the groove of the first split body, and the second split body. APPOINTMENT LIST PATENT DOCUMENTS

[0008] Patent Literature 1: Japanese Patent Application Publication No. 2014-205164 Patent Literature 2: Publication of Japanese Patent Application No. 2013-99774 Patent Literature 3: Publication of Japanese Patent Application No. 2013-119119 Patent Literature 4: Publication of Japanese Patent Application No. 2018-83223 SUMMARY OF THE INVENTION TECHNICAL PROBLEM

[0009] For example, in each die of Patent Literature 1, there is a plurality of cooling water pipes for cooling the pressing tooling itself. Since the forming surface of the die, in particular, reaches a high temperature during hot pressing, these cooling water pipes are usually arranged close to the forming surface of the pressing tooling. However, in this case, since a large number of gaps are created in the vicinity of the forming surface, the load-bearing capacity of the forming surface becomes insufficient. In other words, the strength of the die decreases.

[0010] An object of the present invention is to provide a matrix that is capable of adjusting the temperature of the forming surface, as well as ensuring strength. SOLUTION TO THE PROBLEM

[0011] A die according to the present invention includes a forming surface. The die includes a die body and a detachable housing. The die body includes a flow supply channel. The flow supply channel is formed within the die body. One end of the supply channel opens onto the surface of the die body. The supply channel is supplied with a temperature-adjusting fluid. The detachable housing is detachably mounted on the surface of the die body. The detachable housing includes an outer surface that constitutes at least a portion of the forming surface of the die. A temperature-adjusting space is located on the surface of the die body or on the detachable housing. The temperature-adjusting space is in communication with the flow supply channel. The detachable housing is divided into a plurality of housing parts.The plurality of housing parts is arranged in an intersection direction of the longitudinal direction of the die on the surface of the die body. ADVANTAGEOUS EFFECTS OF THE INVENTION

[0012] In accordance with the present invention, it is possible to adjust the temperature of the forming surface of the matrix, as well as ensure its resistance. BRIEF DESCRIPTION OF THE FIGURES

[0013] Figure 1 is a schematic diagram showing a pressing machine. Figure 2 is a cross-sectional view of the matrix (lower matrix) in accordance with the first modality. Figure 3 shows a detachable housing, which is included in the matrix shown in Figure 2, viewed from the side of the inner surface. Figure 4 is a cross-sectional view of the matrix (upper matrix) in accordance with the first modality. Figure 5 is a cross-sectional view of the matrix (lower matrix) in accordance with the second modality. Figure 6 is a cross-sectional view of the matrix (upper matrix) in accordance with the second modality. Figure 7 shows a detachable housing, which is included in the matrix shown in Figure 5, viewed from the side of the inner surface. Figure 8 shows the detachable housing shown in Figure 7, viewed from the outer surface side. Figure 9 is a diagram to explain a conformity matrix with a variation of the modalities. Figure 10 is another diagram to explain the conformity matrix with the variation. Figure 11 is a cross-sectional view of a conformity matrix with another variation of the modalities. DESCRIPTION OF THE MODALITIES

[0014] The die conforming to a modality includes a forming surface. The die includes a die body and a removable housing. The die body includes a flow supply channel. The flow supply channel is formed within the die body. One end of the supply channel opens onto the surface of the die body. The flow supply channel must be supplied with a temperature-adjusting fluid. The removable housing is detachably mounted on the surface of the die body. The removable housing includes an outer surface that constitutes at least a portion of the forming surface of the die. On the surface of the die body or on the removable housing, there is a temperature-adjusting space. The temperature-adjusting space is in communication with the flow supply channel.The detachable housing is divided into a plurality of housing parts. The plurality of housing parts are arranged in an intersection direction of the longitudinal direction of the die on the surface of the die body (first configuration).

[0015] In the die according to the first configuration, the forming surface temperature is adjusted by a temperature-adjusting fluid that flows into the temperature adjustment chamber from the flow supply channel. In other words, the forming surface temperature of the die is adjusted directly by the fluid in the temperature adjustment chamber. This temperature adjustment chamber is distributed across the surface of the die body or in the removable housing that can be mounted on or removed from the die body. Therefore, the workload during press operation is distributed over the contact surface between the die body and the removable housing. This allows for adjustment of the forming surface temperature and ensures the die's strength.

[0016] On the die forming surface, the degree of wear varies by region. For example, among the die forming surfaces, the portion that rubs against the workpiece wears more rapidly than the portion where the workpiece is merely sandwiched between them. According to the first configuration, the detachable housing, mounted on the die body, is divided into a plurality of housing parts. Therefore, the detachable housing can be partially replaced. For example, among the plurality of housing parts included in the detachable housing, the forming surface can be partially repaired by replacing the worn housing part. Therefore, it is not necessary to repair the entire die or prepare a new one, and thus, die repair can be easily performed.

[0017] The removable housing may also include a through-hole. One end of the through-hole opens into the temperature adjustment space. Additionally, the other end of the through-hole opens into the outer surface of the removable housing (second configuration).

[0018] In accordance with the second configuration, the fluid flowing into the temperature adjustment chamber can be expelled from the outer surface of the removable housing. Therefore, the temperature adjustment fluid can be supplied to the item formed in the die. ινΐΛ / a / zuzz / ui un υο

[0019] In general, given the high strength of the die body material, forming a through-hole in a die to expel the temperature-adjusting fluid from the forming surface is not easy. In particular, the required diameter of the through-hole for expulsion is small from the standpoint of improving flow rate. Forming such a through-hole in the die requires complex machining of the flow path to gradually reduce the orifice diameter from the temperature-adjusting fluid supply channel in order to avoid increased pressure loss. Furthermore, since the length of the through-hole tends to be large, precisely forming a large number of through-holes in the die is impractical in terms of both machining difficulty and cost.For example, conventionally, when a small-diameter through-hole is required, a large-diameter through-hole is first formed in the die, and a screw or similar device with a small-diameter through-hole is then fitted into the large-diameter through-hole. In contrast, according to the second configuration, a through-hole can be formed in the removable housing to expel the temperature-adjusting fluid from the forming surface. The removable housing forms part of the die's surface and has a small thickness. Therefore, a through-hole of the desired diameter can be easily formed.

[0020] The temperature adjustment space is preferably formed by a groove provided on the inner surface of the removable housing. The inner surface of the removable housing is the surface on the side of the die body (third configuration).

[0021] When the temperature adjustment space is formed by a groove on the inner surface of the removable housing, the thickness of the removable housing can be reduced compared to, for example, a case where the removable housing is shaped like a hollow box. Furthermore, since a portion of the groove on the inner surface of the removable housing is supported by the die body surface, and the supported area of ​​the removable housing increases, deformation of the removable housing can be suppressed.

[0022] Hereafter, embodiments of the present invention shall be described by reference to the drawings. The same or equivalent configuration shall be designated by the same reference symbol in each figure, and the same description shall not be repeated.

[0023] <Primera modalidad> [Pressing machine configuration] Figure 1 is a schematic diagram showing a pressing machine 100. The pressing machine 100 is provided with dies 10 and 20. Figure 1 shows the pressing machine 100 viewed from the front. In the present embodiment, the direction perpendicular to the paper surface in Figure 1 is a depth direction of the pressing machine 100. ινΐΛ / a / zuzz / ui un υο

[0024] The pressing machine 100 includes a main body frame 30, a slide 40, a die holder 50 and a base plate 60.

[0025] The slide 40 is mounted on the main body frame 30. The slide 40 is moved up and down relative to the main body frame 30 by operation of a hydraulic cylinder, handwheel, or the like, housed in the main body frame 30. The slide 40 supports the die 20.

[0026] The die holder 50 is arranged below the slide 40. The base plate 60 is fixed to the die holder 50. The base plate 60 has a concave shape. The die 10 is mounted on the base plate 60. The base plate 60 adjusts the position of the die 10 in the vertical direction. The die 10 is oriented towards the die 20.

[0027] Dies 10 and 20 extend in the depth direction of the pressing machine 100. Hereafter, with respect to dies 10 and 20, the depth direction of the pressing machine 100 is called the longitudinal direction, and a direction perpendicular to the longitudinal and vertical directions is called the lateral direction.

[0028] Figure 2 is a cross-sectional view showing the outline configuration of the die 10. A cross-section is a section perpendicular to the longitudinal direction. As shown in Figure 2, the die 10 includes a die body 11, a die base 12, and a detachable housing 13.

[0029] In the present embodiment, the die body 11 has a schematic hat shape when viewed from the longitudinal direction. In other words, the die body 11 includes a punch portion 111 and flange portions 112.

[0030] The punch portion 111 is arranged midway along the lateral direction of the die body 11. The punch portion 111 includes a top surface Illa and side surfaces 111b. The side surfaces 111b are located on either side of the top surface Illa. Each of the side surfaces 111b is inclined outward from the vertical direction in the lateral direction, as they are closer to the bottom from the top surface Illa. Each flange portion 112 projects outward in the lateral direction from the punch portion 111. The top surface 112a of the flange portion 112 is connected to the lower end of the side surface 111b of the punch portion 111.

[0031] The matrix body 11 includes a plurality of flow supply channels 113 and a plurality of flow discharge channels 114. Each of the flow supply channels 113 and flow discharge channels 114 penetrates the matrix body 11 in the vertical direction. The upper ends of the flow supply channel 113 and the flow discharge channel 114 open onto the surface of the die body 11. More specifically, the upper ends of the flow supply channel 113 and the flow discharge channel 114 open onto the upper surface 112a of the punch portion 111 or onto the upper surface 112a of the flange portion 112. The lower ends of the flow supply channel 113 and the flow discharge channel 114 open onto the lower surface of the die body 11.

[0032] From the plurality of flow supply channels 113, two branched supply paths 1131 are provided in the flow supply channel 113 that opens on the upper surface 11 of the punch portion 111. Each of the branched supply paths 1131 extends from the flow supply channel 113 in the lateral direction of the die 10. Each branched supply path 1131 may be inclined or bent with respect to the lateral direction of the die 10. One of the two branched supply paths 1131 opens on a lateral surface 11 of the punch portion 111. The other branched supply path 1131 opens on the other lateral surface 11 of the punch portion 111.

[0033] In the flow discharge channel 114, which opens on the upper surface 11 of the punch portion 111, among the plurality of flow discharge channels 114, two branched discharge paths 1141 are provided. Each of the branched discharge paths 1141 extends from the flow discharge channel 114 in the lateral direction of the die 10. Each branched discharge path 1141 may be inclined or bent with respect to the lateral direction of the die 10. One of the two branched discharge paths 1141 opens on a lateral surface 11 Ib of the punch portion 111. The other branched discharge path 1141 opens on the other lateral surface 11 Ib of the punch portion 111.

[0034] The cross-sectional shapes of the flow supply channel 113, the branched supply road 1131, the flow discharge channel 114, and the branched discharge road 1141 are, for example, circular. However, the cross-sectional shapes of the flow supply channel 113, the branched supply road 1131, the flow discharge channel 114, and the branched discharge road 1141 may have other shapes.

[0035] The cross-sectional areas of flow supply channel 113, branch supply path 1131, flow discharge channel 114, and branch discharge path 1141 may be different or equal to each other. Each of the flow supply channels 113, branch supply path 1131, flow discharge channel 114, and branch discharge path 1141 may be configured so that the cross-sectional area is constant throughout, or so that the cross-sectional area varies along the path.

[0036] Matrix body 11 is placed on matrix base 12. Matrix body 11 is mounted on matrix base 12. Matrix base 12 has, for example, a substantially cuboid outer shape.

[0037] A concave conduit 122 is formed on the upper surface 121 of the die base 12. The conduit 122 is, for example, a plurality of slots provided on the upper surface 121 that correspond to the flow supply channels 113 of the die body 11. However, the configuration of the conduit 122 is not limited to this. The conduit 122 is supplied with a temperature-adjusting fluid. In the present embodiment, the temperature-adjusting fluid is a coolant for cooling the die 10. The coolant is typically water. The lower ends of the flow supply channels 113 are connected to the conduit 122.

[0038] In the matrix base 12, a conduit 123 is also formed, which is different from conduit 122. Conduit 123 is, for example, a space provided on the side of the lower surface 124 of the matrix base 12. Conduit 123 is connected to the flow discharge channels 114 of the matrix body 11 by means of a plurality of connecting ways 125. The connecting ways 125 are provided in correspondence with the flow discharge channels 114, in the matrix base 12.

[0039] The detachable housing 13 is a separate member of the die body 11. The detachable housing 13 is made, for example, of metal. The material of the detachable housing 13 may be the same as or different from the material of the die body 11. The detachable housing 13 is detachably mounted on the surface of the die body 11. Although not particularly restricted, the detachable housing 13 is secured to the surface of the die body 11 with rivets after being positioned with a hammer bolt, for example. The outer surface 131 of the detachable housing 13 forms at least part of the forming surface of the die 10. The inner surface 132 of the detachable housing 13 is located on the side of the die body 11. The inner surface 132 is provided with a groove 133. The groove 133 forms a temperature adjustment space SI for adjusting the temperature of the forming surface of the die 10.

[0040] The thickness of the detachable housing 13 is preferably from 5 mm to 10 mm. The thickness of the detachable housing 13 refers to the length from the contact surface between the detachable housing 13 and the die body 11 to the outer surface 131 of the detachable housing 13. In the example of the present embodiment, the detachable housing 13 is divided into a plurality of housing parts 134. In other words, the detachable housing 13 consists of a plurality of housing parts 134. In the die 10 according to the present embodiment, the plurality of housing parts 134 is provided for a die body 11.

[0041] The plurality of housing parts 134 are arranged in a direction that intersects the longitudinal direction of the die 10 with the surface of the die body 11. Therefore, when viewed in a cross-section of the die 10, an end face (the dividing line of the detachable housing 13) of each housing part 134 extends from the surface of the die body 11 to the outer surface 131 of the detachable housing 13. In the cross-sectional view of the die 10, the length of each housing part 134 along the forming surface of the die 10 is, of course, less than the total length of the forming surface in that direction. The housing parts 134 are detachable from the die body 11. In other words, each housing part 134 can be mounted to the die body 11, as well as removed from the die body 11. ινΐΛ / a / zuzz / ui un υο

[0042] In the present embodiment, the detachable housing 13 includes housing parts 134a to 134c. Housing parts 134a to 134c are mounted on any of the surfaces Illa, 111b and 112a, which are a plurality of surfaces that constitute the surface of the matrix body 11 and have different orientations with respect to each other. In the example in Figure 2, housing part 134a is mounted on the top surface 11a of the punch part 111. Housing part 134a is substantially removable in the normal direction with respect to the top surface 111a of the punch part 111. Housing part 134b is mounted on each side surface 11b of the punch part 111. Housing part 134b is substantially removable in the normal direction with respect to each side surface 11b of the punch part 111. Housing part 134c is mounted on the top surface 112a of the flange part 112.The housing part 134c is substantially removable in the normal direction with respect to the upper surface 112a of the flange part 112. From the upper surface 112a of the flange part 112, the portion to which the housing part 134c is mounted has a concave shape compared to other portions.

[0043] Figure 3 shows the detachable housing 13 viewed from the side of the inner surface 132. In Figure 3, one of the plurality of housing parts 134 included in the detachable housing 13 is exemplified.

[0044] As shown in Figure 3, a groove 133 is formed in the inner surface 132 of the detachable housing 13. The groove 133 is formed for each housing part 134. The depth of the groove 133 and the distance from the outer surface 131 to the groove 133 in each housing part 134 are preferably equal to the depth of the groove 133 and the distance from the outer surface 131 to the groove 133 in another housing part 134. Although not particularly restricted, the groove 133 is formed in each housing part 134, for example, so that they are reciprocal to the opposite side edges. Slot 133 is in communication with flow supply channel 113 and flow discharge channel 114. For example, a flow supply channel 113 or a branch supply path 1131 is connected to one end of slot 133, and a flow discharge channel 114 or a branch discharge path 1141 is connected to the other end of slot 133.

[0045] Figure 4 is a cross-sectional view showing the schematic configuration of die 20. As shown in Figure 4, die 20 includes a forming surface having an upward concave shape corresponding to die 10, which includes a forming surface having an upward convex shape. Die 20 includes a die body 21, a die base 22, and a detachable housing 23.

[0046] The matrix body 21 has a concave portion 212 on its lower surface 211. The matrix body 21 includes a plurality of flow supply channels 213 and a plurality of flow discharge channels 214. Some flow supply channels 213 are provided with a branched supply path 2131. Some flow discharge channels 214 are provided with a branched discharge path 2141. Since the configuration of the flow supply channel 213, the branched supply path 2131, the flow discharge channel 214, and the branched discharge path 2141 is the same as the configuration of the flow supply channel 113, the branched supply path 1131, the flow discharge channel 114, and the branched discharge path 1141 (Figure 2) In the body of matrix 11 of matrix 10, the detailed description of the same will be omitted.

[0047] The matrix base 22 has, for example, a substantially cuboid external shape. The matrix base 22 is disposed above the matrix body 21. The matrix body 21 is mounted on the lower surface 221 of the matrix base 22. On the lower surface 221 of the matrix base 22, a conduit 222 is formed, similar to conduit 122 (Figure 2) of matrix base 12 of matrix 10. Conduit 222 is supplied with a temperature-adjusting fluid. In the present embodiment, the temperature-adjusting fluid is a coolant for cooling matrix 20, and is typically water. On the upper surface 224 side of the matrix base 22, a conduit 223 and connecting passages 225 are formed, similar to conduit 123 and connecting passages 125 (Figure 2) in matrix base 12 of matrix 10.

[0048] The detachable housing 23 is configured in the same way as the detachable housing 13 (Figure 2) of the die 10. The detachable housing 23 is a separate member of the die body 21. The detachable housing 23 is formed, for example, from a metal. The material of the detachable housing 23 may be the same as or different from the material of the die body 21. The detachable housing 23 is detachably mounted to the surface of the die body 21. Although not particularly restricted, the detachable housing 23 is fixed to the surface of the die body 21 by rivets after being positioned with a hammer bolt, for example. The outer surface 231 of the detachable housing 23 constitutes at least a part of the forming surface of the die 20. The inner surface 232 of the detachable housing 23 is located on the side of the die body 21. The inner surface 232 is provided with a groove 233.Slot 233 forms a temperature adjustment space S2 for adjusting the temperature of the forming surface of die 20.

[0049] The thickness of the detachable housing 23 is preferably from 5 mm to 10 mm. The thickness of the detachable housing 23 refers to the length from the contact surface between the detachable housing 23 and the die body 21 to the outer surface 231 of the detachable housing 23. The detachable housing 23 is divided into a plurality of housing parts 234. In other words, the detachable housing 23 consists of a plurality of housing parts 234. In the die 20 according to the present embodiment, the plurality of housing parts 234 is provided for a die body 21.

[0050] The plurality of housing parts 234 are arranged in an intersecting direction of the longitudinal direction of the die 20, on the surface of the die body 21. Therefore, when viewed in a cross-section of the die 20, the end face of each housing part 234 (the dividing line of the detachable housing 23) is raised from the surface of the die body 21 towards the outer surface 231 of the detachable housing 23. In the cross-sectional view of the die 20, the length of each of the housing parts 234 in the direction along the forming surface of the die 20 is, of course, less than the total length of the forming surface in the aforementioned direction. The housing parts 234 are detachable with respect to the die body 21, respectively. In other words, each of the housing parts 234 can be mounted on the die body 21 and can be removed from the die body 21.Each of the housing parts 234 is formed by a groove 233 similar to that of housing part 134 (Figure 3) of the detachable housing 13 in the die 10. The depth of the groove 233 and the distance from the outer surface 231 to the groove 233 in each housing part 234 are preferably equal to the depth of the groove 233 and the distance from the outer surface 231 to the groove 233 in another housing part 234.

[0051] In the present embodiment, the detachable housing 23 includes housing parts 234a to 234c. Housing parts 234a to 234c are mounted on any of the surfaces that constitute the surface of the die body 21 and have different orientations with respect to each other. In the example in Figure 4, housing part 234a is mounted on the lower surface of the concave portion 212 of the die body 21. Housing part 234a is substantially detachable in the direction normal to the lower surface of the concave portion 212. Housing part 234b is mounted on each side surface of the concave portion 212. Housing part 234b is substantially detachable from each side surface of the concave portion 212. Housing parts 234c are arranged on both sides of the concave portion 212 in the lateral direction of the die 20 and are mounted on the lower surface 211 of the die body 21.Each housing part 234c is substantially removable in the normal direction with respect to the lower surface 211 of the matrix body 21.

[0052] [Operation of the pressing machine] The operation of the pressing machine 100 during the production of a formed article will now be described. With reference to Figure 1, a heated blank (not shown) is first placed on the die 10. Then, by lowering the slide 40, the die 20 is brought to its bottom dead center. The blank is then pressed by the die 20 and the die 10, producing the formed article.

[0053] When the blanks are repeatedly pressed, the temperature of the forming surfaces of dies 10, 20 increases due to the heat from the heated blanks. Therefore, dies 10, 20 are cooled. Normally, dies 10, 20 are continuously cooled while the formed articles are being produced. However, dies 10, 20 can also be cooled temporarily.

[0054] Referring again to Figure 2, when die 10 is cooled, coolant is continuously introduced into conduit 122 of the die base 12, for example, by fluid pressure feed means (not illustrated) provided outside of die 10. Examples of fluid pressure feed means include pumps and cylinders arranged between conduit 122 and a coolant tank. Pipe 122 can be connected directly to the water supply.The coolant introduced into conduit 122 is supplied to each flow supply channel 113 of the die body 11. The coolant flows to the removable housing 13 through supply channel 113. More specifically, the coolant flows to slot 133 of each housing part 134a to 134c from flow supply channel 113 or from branched supply path 1131.

[0055] As a result of the coolant flowing through the groove 133 of each housing part 134a to 134c, the heat from the removable housing 13 is dissipated. Since the removable housing 13 is thin, the outer surface 131, i.e., the forming surface of the die 10, is also sufficiently cooled. The coolant that has moved through the groove 133 is discharged from the removable housing 13 through the flow discharge channel 114 or the branched discharge path 1141 of the die body 11. The coolant is collected in the conduit 123 of the die base 12 through the flow discharge channels 114 of the die body 11 and the connecting paths 125 of the die base 12 and is discharged from the conduit 123. The coolant discharged from the conduit 123 can be disposed of or recirculated for use.

[0056] With reference to Figure 4, when the die 20 is cooled, coolant is continuously introduced into the conduit 222 of the die base 22, for example, by means of the pressurised fluid feed means described above (not illustrated). The coolant introduced into the conduit 222 is supplied to each flow supply channel 213 of the die body 21. The coolant flows to the removable housing 23 through the flow supply channel 213. More specifically, the coolant flows to the groove 233 of each housing part 234a to 234c from the flow supply channel 213 or from the branched supply path 2131.

[0057] As a result of the coolant flow through the groove 233 of each housing part 234a to 234c, heat is dissipated from the removable housing 23. Since the removable housing 23 is thin, the outer surface 231, i.e., the forming surface of the die 20, is also sufficiently cooled. The coolant that has moved through the groove 233 is discharged from the removable housing 23 through the flow discharge channel 214 or the branched discharge path 2141 of the die body 21. The coolant is collected in the conduit 223 of the die base 22 through the flow discharge channels 214 of the die body 21 and the connecting paths 225 of the die base 22 and is discharged from the conduit 223. The coolant discharged from the conduit 223 can be disposed of or recirculated for use.

[0058] [Advantageous effects of the first modality] ινΐΛ / a / zuzz / ui un υο In dies 10 and 20 according to the present embodiment, the forming surfaces are cooled by the coolant that has been moved within each groove 133 of the removable housing 13 and each groove 233 of the removable housing 23. In other words, groove 133 of the removable housing 13 and groove 233 of the removable housing 23 function as temperature adjustment spaces SI, S2, respectively, for cooling the forming surfaces of dies 10, 20. Therefore, by providing the temperature adjustment spaces SI, S2 distributed in the removable housings 13, 23 that constitute the forming surfaces of dies 10, 20, the workload during press operation can be distributed over the contact surfaces between the die bodies 11, 21 and the removable housings 13, 23.Therefore, in accordance with matrices 10 and 20 of the present modality, it is possible to cool the forming surfaces of matrices 10, 20, as well as ensure the strength of matrices 10, 20.

[0059] In dies 10 and 20 according to this embodiment, the thicknesses of the removable housings 13, 23, which are detachably mounted on the die bodies 11, 21, are small. The thicknesses of the removable housings 13, 23 are, for example, from 5 mm to 10 mm. Therefore, it is possible to reduce the amount of deformation of the removable housings 13, 23 due to the working load during press operation. Furthermore, the small thickness of the removable housings 13, 23 mitigates the reduction in the sectional stiffness of the die bodies 11, 21. Therefore, it is possible to ensure the stiffness and load-bearing capacity of dies 10 and 20.

[0060] Reducing the thickness of the removable housings 13, 23 allows for a reduction in the thermal capacity of the removable housings 13, 23. Therefore, the removable housings 13, 23, which constitute the forming surfaces of the dies 10, 20, are cooled more easily.

[0061] In the present embodiment, in particular, grooves 133, 233 are formed on the inner surfaces 132, 232 of the removable housings 13, 23, and the temperature adjustment spaces SI, S2 are formed by the grooves 133, 233. Therefore, the thicknesses of the removable housings 13, 23 can be reduced further, and the displacement in the thickness direction of the removable housings 13, 23 can be reduced. Furthermore, on the inner surfaces 132, 232 of the removable housings 13, 23, not only a portion of the peripheral edge, but also a portion between the grooves 133 or between the grooves 233 is supported by the die body 11 or 21, thereby increasing the supported area of ​​the removable housings 13, 23 and suppressing the deformation of the removable housings 13, 23. Therefore, it is possible to further increase the strength of the dies 10, 20.

[0062] When the grooves 133, 233, such as the temperature adjustment spaces SI, S2, are formed on the inner surfaces 132, 232 of the removable housings 13, 23 instead of on the surfaces of the die bodies 11, 21 as in the present embodiment, the repairability of the dies 10, 20 is improved. In other words, even if deformations such as wear and dents occur on the forming surface of the dies 10, 20, the damage caused by such deformations is unlikely to spread to the die bodies 11, 21, which do not have grooves. Therefore, the dies 10, 20 can be repaired only by replacing the removable housings 13, 23.Even if the damage from such deformation extends to the die bodies 11, 21, the die bodies 11, 21 only have flow channels 113, 114, 213, 214 within them, and do not have grooves on their surfaces, so the die bodies 11, 21 can be easily repaired compared to when there is a groove on the surfaces of the die bodies 11, 21. In addition, it is easier to provide grooves 133, 233 in the removable housings 13, 23 than to provide a groove in the die bodies 11, 21.

[0063] In dies 10 and 20 in accordance with the present modality, slot 133 as temperature adjustment space SI is in communication with a flow supply channel 113 and a flow discharge channel 114 of die body 11, and slot 233 as temperature adjustment space S2 is in communication with a flow supply channel 213 and a flow discharge channel 214 of die body 21.When the forming surfaces of dies 10, 20 are cooled, fresh coolant is supplied from flow supply channels 113, 213 to temperature adjustment spaces SI, S2, and the coolant whose temperature has risen due to heat exchange with the forming surfaces is discharged from flow discharge channels 114, 214. In other words, since the coolant in temperature adjustment spaces SI, S2 is constantly replaced, the forming surfaces of dies 10, 20 can be adequately cooled.

[0064] In dies 10 and 20, in accordance with this embodiment, the detachable housing 13 is divided into a plurality of housing parts 134, and the detachable housing 23 is divided into a plurality of housing parts 234. Housing parts 134 and 234 are detachable from die bodies 11 and 21, respectively. Therefore, for example, if some of the plurality of housing parts 134 and 234 are worn, only the worn housing parts 134 and 234 need to be replaced. In other words, a partial repair of dies 10 and 20 is possible. Thus, when the forming surfaces of dies 10 and 20 are partially worn, it is not necessary to repair the entire die set or prepare a new die, thereby improving the repairability of dies 10 and 20.

[0065] In the present embodiment, temperature adjustment spaces SI, S2 are used to cool dies 10, 20, but temperature adjustment spaces SI, S2 can also be used to maintain the temperature of dies 10, 20. When maintaining the temperature of dies 10, 20, for example, high-temperature oil or similar can be selected as the fluid for temperature adjustment.

[0066] <Segunda modalidad> Figures 5 and 6 are cross-sectional views of arrays 10A and 20A according to the second modality. Array 10A differs from array 10 (Figure 2) according to the first modality in the configuration of the detachable housing 13A. Array 20A differs from array 20 (Figure 4), according to the first modality, in the configuration of the detachable housing 23A.

[0067] With reference to Figure 5, the detachable housing 13A of the array 10A has slots 133a, 133b on the inner surface 132. Slot 133a functions as a temperature adjustment space SI. The detachable housing 13A further includes a plurality of through holes 135a, 135b.

[0068] One end of each through-hole 135a opens into slot 133a as a temperature adjustment space SI. The other end of each through-hole 135a opens into the outer surface 131 of the removable housing 13A. One end of each through-hole 135b opens into slot 133b, different from slot 133a, as a temperature adjustment space SI. The other end of each through-hole 135b opens into the outer surface 131 of the removable housing 13A in the same manner as through-hole 135a.

[0069] The detachable housing 13A is divided into a plurality of housing parts 134A. The detachable housing 13A is constituted by the plurality of housing parts 134A. The detachable housing 13A includes housing parts 134Aa to 134Ac that correspond to the top surface 11a and both side surfaces 11b of the punch part 111, and to the top surface 112a of each flange part 112, respectively. The housing parts 134Aa to 134Ac are arranged in an intersection direction of the longitudinal direction of the die 10A on the surface of the die body 11 in the same manner as the housing parts 134a to 134c (Figure 2) in the first embodiment.

[0070] A plurality of convex portions 131a are provided on the outer surface 131 of the detachable housing 13A. The convex portions 131a are provided at a substantially equal density on the outer surface 131. These convex portions 131a can be formed, for example, by engraving the outer surface 131. In the present embodiment, the convex portions 131a are provided over the entire area of ​​the outer surface 131. In other words, the plurality of convex portions 131a are formed on each of the plurality of housing parts 134A. However, these convex portions 131a can be formed only on some housing parts 134A. The convex portion 131a is preferably provided so as not to interfere with the through holes 135a, 135b.

[0071] With reference to Figure 6, the detachable housing 23A of the die 20A has slots 233a, 233b on its inner surface 232. Slot 233a functions as a temperature adjustment space S2. The detachable housing 23A further includes a plurality of through holes 235a, 235b.

[0072] One end of each through-hole 235a opens into the slot 233a as temperature adjustment space S2. The other end of each through-hole 235a opens into the outer surface 231 of the removable housing 23 A. One end of each through-hole 235b opens into the slot 233b different from the slot 233a as temperature adjustment space S2. The other end of each through-hole 235b opens into the outer surface 231 of the removable housing 23 A in the same manner as the through-hole 235a.

[0073] The detachable housing 23A is divided into a plurality of housing parts 234A. The detachable housing 23A is comprised of the plurality of housing parts 234A. The detachable housing 23A includes housing parts 234Aa to 234Ac corresponding to the lower surface and both side surfaces of the concave portion 212, as well as to the lower surface 211 of the die body 21, respectively. Housing parts 234Aa to 234Ac are arranged in an intersection direction of the longitudinal direction of the die 20A on the surface of the die body 21 in the same manner as housing parts 234a to 234c (Figure 4) in the first embodiment.

[0074] In the same manner as in the detachable housing 13A (Figure 5) of the array 10A, a plurality of convex portions 23a are provided on the outer surface 231 of the detachable housing 23A. The convex portions 231a are provided with substantially equal density on the outer surface 231. These convex portions 231a can be formed, for example, by engraving the outer surface 231. In the present embodiment, the convex portions 231a are provided over the entire area of ​​the outer surface 231. In other words, the plurality of convex portions 231a are formed on each of the plurality of housing parts 234A. However, these convex portions 231a can be formed only on some housing parts 234A. It is preferable that the convex portions 231a be provided so as not to interfere with the through holes 235a, 235b.

[0075] Hereafter, with reference to Figures 7 and 8, the detailed configuration of the detachable housing 13A will be described. Since the configuration of the detachable housing 23A (Figure 6) of the array 20A is approximately the same as that of the detachable housing 13A of the array 10A, its description will be omitted. Figure 7 shows the detachable housing 13A of the array 10A viewed from the side of the inner surface 132. Figure 8 shows the detachable housing 13A of the array 10A viewed from the outer surface 131. Figures 7 and 8 exemplify one of the plurality of housing parts 134A included in the detachable housing 13A.

[0076] As shown in Figure 7, grooves 133a, 133b are formed on the inner surface 132 of the detachable housing 13A. Grooves 133a, 133b are formed for each part of the housing 134A. The depth of groove 133a and the distance from the outer surface 131 (Figure 8) to groove 133a in each part of the housing 134A are preferably equal to the depth of groove 133a and the distance from the outer surface 131 to groove 133a in another part of the housing 134A. Similarly, the depth of the groove 133b and the distance from the outer surface 131 to the groove 133b in each housing part 134A are preferably equal to the depth of the groove 133b and the distance from the outer surface 131 to the groove 133b in another housing part 134A. ινΐΛ / a / zuzz / ui un υο

[0077] With reference to Figure 7, slot 133a is in communication with the flow supply channel 113. More specifically, the flow supply channel 113 or the branched supply path 1131 is connected to slot 133a. Slot 133a is formed, for example, along the peripheral edge of the housing part 134A. A plurality of through holes 135a opening into the outer surface 131 (Figure 8) of the removable housing 13A are connected to slot 133a. These through holes 135a are arranged at intervals along slot 133a, for example. The through holes 135a are positioned so as not to interfere with the convex portions 131a of the outer surface 131.

[0078] With reference to Figure 7, the slot 133b is in communication with the flow discharge channel 114. More specifically, the flow discharge channel 114 or the branched discharge path 1141 is connected to the slot 133b.In an example of the present embodiment, the groove 133b is formed on the inner side of the groove 133a along the peripheral edge of the housing portion 134A. A plurality of through holes 135b opening into the outer surface 131 (Figure 8) of the detachable housing 13A are connected to the groove 133b. These through holes 135b are located at substantially equal intervals. The through holes 135b are positioned so as not to interfere with the convex portions 131a of the outer surface 131.

[0079] Referring again to Figures 5 and 6, dies 10A and 20A, in accordance with the present embodiment, are configured to cool an article formed in dies 10A and 20A after die 20A reaches bottom dead center. A method of cooling the formed article will be described hereafter.

[0080] With reference to Figure 5, in die 10A, the coolant is continuously introduced into the conduit 126 of the die base 12 by means of the fluid pressure feed means (not illustrated) described in the first embodiment. The conduit 126 is a concave portion provided on the upper surface 121 of the die base 12, and the coolant is stored therein. The coolant in the conduit 126 flows to the removable housing 13A through the flow supply channels 113 of the die body 11. More specifically, the coolant flows to the groove 133a of each housing portion 134Aa to 134Ac from the flow supply channel 113 or from the branched supply path 1131.

[0081] The coolant that has entered the groove 133a is expelled from each through-hole 135a. The coolant directly cools the surface of the formed article as it passes between the convex portions 131a on the outer surface 131 of the removable housing 13A. The forming surface of the die 10A is also cooled by this coolant.

[0082] The coolant that has cooled the formed article and the forming surface of the die 10A is collected in the groove 133b of the removable housing 13A through the through holes 135b. The coolant is discharged from the removable housing 13A through the flow discharge channel 114 or the branched discharge path 1141 of the die body 11. The coolant is discharged from the conduit 123 after reaching it through the flow discharge channels 114 of the die body 11 and the connecting paths 125 of the die base 12. The coolant discharged from the conduit 123 can be disposed of or circulated for use.

[0083] With reference to Figure 6, die 20A also cools the formed article and forming surface in the same manner as die 10A. In other words, in die 20A, coolant is continuously introduced into conduit 226 of the die base 22 by the pressurised fluid feed means described above (not illustrated). Coolant flows to the removable housing 23A through flow supply channels 213 of the die body 21. Coolant flows to groove 233a of each housing part 234Aa to 234Ac from flow supply channel 213 or from branched supply path 2131.

[0084] After flowing into groove 233a, the coolant is expelled from each through-bore 235a. The coolant cools the formed article and the forming surface of the die 20A as it passes between the convex portions 231a on the outer surface 231 of the removable housing 23A.

[0085] The coolant is then recovered in slot 233b of the removable housing 23A through through-holes 235b. The coolant is discharged from the removable housing 23A through flow discharge channel 214 or branched discharge path 2141 of the die body 21. The coolant is discharged from conduit 223 after reaching conduit 223 through flow discharge channels 214 of the die body 21 and connecting paths 225 of the die base 22. The coolant discharged from conduit 223 can be disposed of or circulated for use.

[0086] In dies 10A and 20A in accordance with the present embodiment also, as in the first embodiment, the temperature adjustment spaces SI, S2 are provided in a distributed manner in the detachable housings 13A, 23A which are detachable with respect to the die bodies 11, 21. Therefore, the workload during pressing work can be distributed over the contact surfaces between the die bodies 11, 21 and the detachable housings 13A, 23A, and the strength of the dies 10A, 20A can be ensured.

[0087] In dies 10A and 20A in accordance with the present embodiment, through-holes 135a, 235a extending from temperature adjustment spaces SI, S2 to the forming surfaces are provided in removable housings 13A, 23A. Therefore, the coolant supplied to the temperature adjustment spaces SI, S2 can be expelled from the forming surfaces so that it is possible to cool the article formed in dies 10A and 20A.

[0088] In the present embodiment as well, the thicknesses of the removable housings 13A, 23A are small and are, for example, from 5 mm to 10 mm. Through-holes 135a, 235a for expelling the coolant can be formed in the removable housings 13A, 23A. In other words, since the lengths of the through-holes 135a, 235a for expelling the coolant are small, the through-holes 135a, 235a can be easily machined, and the machining efficiency will be better. For example, even if the required diameter for through holes 135a, 235a is small, through holes 135a, 235a can be formed in the detachable thin-walled housings 13A, 23A, and it is not necessary to form a large number of small-diameter flow supply channels 113, 213 in the die bodies 11, 21.The diameter of the flow supply channels 113, 213 of the die bodies 11, 21 can be made with a diameter that is easy to machine. The same applies to the through-holes 135b, 235b for expelling the coolant.

[0089] As in the first embodiment, in dies 10A and 20A in accordance with this embodiment, the detachable housing 13A is divided into a plurality of housing parts 134A, and the detachable housing 23A is divided into a plurality of housing parts 234A. Therefore, replacement is possible for each of the housing parts 134A and 234A. For example, if the convex portions 131a and 231a of the outer surfaces 131 and 231 of the detachable housings 13A and 23A are partially worn, the housing parts 134A and 234A of that portion can be replaced with a new one. In other words, since it is not necessary to repair dies 10A and 20A in their entirety or to prepare a new die, the repairability of dies 10A and 20A can be improved.

[0090] In the present embodiment, the removable housings 13A, 23A expel coolant into the temperature adjustment spaces SI, S2 only from the outer surfaces 131, 231. However, the removable housings 13A, 23A may be configured to expel coolant from the peripheral edge portion thereof, in addition to the outer surfaces 131, 231. The coolant expelled from the peripheral edge portion of the removable housings 13A, 23A is supplied, for example, to fastening parts, such as locating pins and die lifters 10A, 20A, to cool the fastening parts.When the coolant is expelled from the peripheral rim portion of the removable housings 13A, 23A, for example, a passage can be provided between the outer surfaces 131, 231 of the removable housings 13A, 23A and the surfaces of the die bodies 11, 21 in such a way that a coolant expulsion hole is exposed in the peripheral rim portion.

[0091] In the present embodiment, an article is formed using dies 10A and 20A, and the formed article is cooled in dies 10A and 20A as is. However, it is also possible to use dies 10A and 20A simply to pressurize and cool a formed article at high temperature.

[0092] Although each embodiment in accordance with the present invention has been described so far, the present invention is not limited to the embodiments described above, and various modifications may be made to them within a range that does not depart from the scope of the same.

[0093] For example, in dies 10, 20 according to the first mode, the refrigerant is not expelled from the temperature adjustment spaces SI, S2 of the removable housings 13, 23, whereas in dies 10A, 20A according to the second mode, the refrigerant is expelled from the temperature adjustment spaces S1, S2 of the removable housings 13A, 23A. However, for example, as in die 10B shown in Figures 9 and 10, by using an on / off valve 136 that opens and closes a through-hole 135 depending on the direction of refrigerant feed, the expulsion and non-expulsion of the refrigerant can be changed in the removable housing 13B.

[0094] With reference to Figure 9, the groove 133B of the removable housing 13B is provided with a plurality of on / off valves 136 corresponding to a plurality of through holes 135. Each on / off valve 136 is configured not to block the corresponding through hole 135 when the coolant flows in the feed direction A1. Therefore, while the coolant flows in the groove 133B in the feed direction A1, the coolant is expelled from the outer surface 131 of the removable housing 13B through each through hole 135. In this way, the coolant can be supplied to the formed article.

[0095] With reference to Figure 10, when the coolant flows in slot 133B in the reverse feed direction A2, each on / off valve 136 blocks the corresponding through-hole 135. Therefore, the coolant flows only in slot 133B and is not expelled from the outer surface 131 of the removable housing 13B. In this way, the forming surface is cooled from the inside of the die 10B.

[0096] In die 10, 10A, 20, or 20A according to the first modality or the second modality, practically the entire forming surface is constituted by the removable housing 13, 13A, 23, or 23A. However, in die 10, 10A, 20, or 20A, only a portion of the forming surface may be constituted by the removable housing 13, 13A, 23, or 23A.

[0097] For example, when it is desired that the formed article be partially cooled and quickly tempered, the detachable housings 13A, 23A having through holes 135a, 135b, 235a, 235b and convex portions 131a, 231a may be provided only in a region that comes into contact with the quickly cooled portion of the formed article, outside of the dies 10A, 20A in accordance with the second modality. Furthermore, for example, when press work is performed using a custom-made blank consisting of a plurality of steel sheets having different thicknesses, the detachable housings 13A, 23A having through holes 135a, 135b, 235a, 235b and the convex portions 131a, 231a can be provided only in a region that comes into contact with a portion that is very thick and difficult to cool, outside of the dies 10A, 20A.Also, when substantially all the forming surfaces of the dies 10A, 20A are made up of the removable housings 13A, 23A, the cooling intensity of the formed article can be changed for each region by using, for example, the housing parts 134A, 234A having through holes 135a, 135b, 235a, 235b and convex portions 131a, 231a, and the housing parts 134, 234 that do not have through holes 135a, 135b, 235a, 235b in combination. Furthermore, even when only a portion of the forming surfaces of dies 10A, 20A are made up of detachable housings 13A, 23A, the cooling intensity of the formed article can be changed for each region, for example, by using housing parts 134A, 234A having through holes 135a, 135b, 235a, 235b, and convex portions 131a, 231a, and housing parts 134, 234 that do not have through holes 135a, 135b, 235a, 235b in combination.

[0098] In the embodiment described above, the removable housings 13, 13A, 23, 23A constitute the temperature adjustment spaces SI, S2 with the grooves 133, 133a, 233, 233a formed on the inner surfaces 132, 232, respectively. However, it is also possible to form a space within the removable housing 13, 13A, 23, or 23A, and use this space as the temperature adjustment space SI or S2. However, from the point of view of reducing the thickness of the removable housings 13, 13A, 23, 23A, it is preferable, as in the embodiments described above, to constitute the temperature adjustment spaces SI, S2 with the grooves 133, 133a, 233, 233a.

[0099] The temperature adjustment spaces SI, S2 may be single concave portions occupying substantially the entire area of ​​the inner surfaces 132, 232 of the removable housings 13, 13A, 23, 23A. However, as in the embodiments described above, when the temperature adjustment spaces SI, S2 of the removable housings 13, 13A, 23, 23A are the slots 133, 133a, 233, 233a, it is advantageous in terms of strength since there are more portions that bear the load during press work.

[0100] When grooves 133, 133a, 233, 233a are formed on the inner surfaces 132, 232 of the removable housings 13, 13A, 23, 23A, corresponding grooves to grooves 133, 133a, 233, 233a of the removable housings 13, 13A, 23, 23A can be formed on the surface of the die bodies 11, 21. In this way, the volume of the temperature adjustment spaces SI, S2 can be enlarged, thereby allowing an increase in the fluid flow rate through the temperature adjustment spaces SI, S2. Furthermore, it is also possible to form grooves only on the surfaces of the die bodies 11, 21 without forming grooves 133, 133a, 233, 233a on the inner surfaces 132, 232 of the removable housings 13, 13A, 23, 23A. In this case, the temperature adjustment spaces SI, S2 are formed by the groove on the surface of the die bodies 11, 21.However, when grooves are provided on the surface of the die bodies 11, 21, the repairability of the die bodies 11, 21 is impaired. Therefore, it is preferable that, as in the embodiments described above, the grooves 133, 133a, 233, 233a be provided on the inner surfaces 132, 232 of the removable housings 13, 13A, 23, 23A, and no grooves be provided on the surfaces of the die bodies 11, 21.

[0101] The detachable housings 13, 13A, 23, 23A can also be divided into smaller parts. For example, in the die 10C shown in Figure 11, the detachable housing 13C is further divided into the side surfaces 111b of the punch part 111 and the top surfaces 112a of the flange parts 112. In the detachable housing 13C, each housing part 134C is configured such that a boundary surface between adjacent housing parts 134C crosses the direction of load during press work. Each housing part 134C has an uneven shape on the boundary surface that fits the adjacent housing part 134C. In accordance with this configuration, it is unlikely that each housing part 134C will detach from the die body 11, and it becomes possible to reduce the need for a hammer bolt, rivet, and the like to fix housing part 134C to the die body 11.Furthermore, since the 134C housing parts can be tightly bonded together using the load during pressing work, it is possible to prevent a gap from forming on the forming surface of the 10C die.

[0102] On the inner surface 132 of the removable housing 13C, a groove 133 (Figure 3) or grooves 133a, 133b (Figure 7) can be formed as in each embodiment described above. The groove 133 or the grooves 133a, 133b can be formed on the inner surface 132 in such a way as to connect adjacent parts of the housing 134C, for example. In this case, since a temperature-adjusting fluid can be supplied from a flow channel 113 to the plurality of housing parts 134C, it is possible to reduce the number of flow channels 113 in the die body 11. Therefore, the production of the die body 11 is made easier, and the strength of the die body 11 can be further improved.

[0103] In the first mode, arrays 10 and 20 have detachable housings 13 and 23, respectively. However, only one of arrays 10 and 20 can have a detachable housing. Similarly, in the second mode, only one of arrays 10A and 20A can have a detachable housing.

[0104] In the embodiments described above, three flow supply channels 113 are provided for each die body 11. In addition, within the flow supply channel 113 that opens on the upper surface 111a of the punch portion 111, two branched supply paths 1131 are provided between the flow supply channels 113. However, the number and arrangement of the flow supply channels 113 and the branched supply paths 1131 are not limited to this. Similarly, the number and arrangement of the flow discharge channels 214 and the branched discharge paths 2141 in the die body 21 are not particularly limited. In addition, flow discharge channels 114, 214 and branch discharge routes 1141, 2141 can be used to supply the fluid, and flow supply channels 113, 213 and branch supply routes 1131, 2131 can be used to discharge the fluid. ινΐΛ / a / zuzz / ui un υο LIST OF REFERENCE SIGNS

[0105] 10, 10A to 10C, 20, 20A: Matrix 11, 21: Matrix body 113, 213: Feed channel 12, 22: Matrix basis 13, 13A to 13C, 23, 23A: Removable housing 131, 231: Exterior surface 132, 232: Interior surface 133, 133a, 133B, 233, 233a: Slot 134, 134a to 134c, 134A, 134Aa to 134Ac, 134C, 234, 234a to 234c, 234A, 234Aa to 234Ac: Housing part 135, 135a, 235a: Through drill S1, S2: Temperature adjustment space

Claims

1. A die including a forming surface, comprising: a die body including a flow supply channel formed within the die body, one end of which opens onto a surface of the die body, and to which fluid is supplied for temperature adjustment; and a detachable housing detachably mounted on the surface of the die body and including an outer surface constituting at least a portion of the forming surface, wherein a temperature adjustment space in communication with the flow supply channel is provided on the surface of the die body or on the detachable housing, the detachable housing is divided into a plurality of housing parts, and the plurality of housing parts are arranged in a direction intersecting a longitudinal direction of the die on the surface of the die body.

2. The matrix according to claim 1, wherein the detachable housing further includes a through-hole opening at one end into the temperature adjustment space and at the other end into the outer surface.

3. The die according to claim 1 or 2, wherein the temperature adjustment space is formed by a slot, the slot being provided on an inner surface that is a surface on the die body side of the detachable housing.

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