WO2022039162A1 - Molding apparatus - Google Patents

Abstract

A molding apparatus 1 according to the present invention comprises a punch 16 having a cutting edge part 20 with a punching shape, and a die 12 configured by die blocks 12A to 12D disposed with respect to the cutting edge part 20. Any of the die blocks 12A to 12D is capable of slide movement toward the punch 16. The die blocks 12A to 12D are fixed to a die holder 13, with a clearance 21 between the cutting edge part 20 of the punch 16 and a cutting edge part 15 of the die 12 being defined by a shim 40.　The molding apparatus 1 according to the present invention makes it possible to reduce the cost of the molding apparatus significantly, easily and accurately keep a desired clearance, and provide a forward inclination angle and/or a shear angle on the cutting edge part of the die. Furthermore, the molding apparatus 1 according to the present invention is advantageous in terms of ease of maintenance.

Description

Mold device

The present invention relates to a mold device.

In general, the outer shape of a work material such as a plate material is removed by press working using a die device consisting of an integrated punch and die as an efficient processing means. In such press working, the outer shape is punched by inserting a punch into the die with a work material interposed therebetween (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2003-126927

In the die device of Patent Document 1, for example, when the punching outer shape is enlarged such that the vertical × horizontal dimension is 200 mm × 200 mm, the die and the punch are naturally enlarged. For example, if the material of the die and the punch used for punching the outer shape is originally made of expensive silicon nitride or cemented carbide, the material cost becomes high due to the increase in size. In addition, the die and punch processing time becomes long due to the increase in size, and the mold equipment becomes expensive due to the need for large processing equipment. Further, since the mold device of Patent Document 1 does not have a means for adjusting (regulating) the clearance between the punch and the die, it takes time and effort to specify the clearance and it is possible to manage the clearance with high accuracy. It also has the problem of being difficult.

Further, in the configuration in which the die is integrally formed as in Patent Document 1, the anteversion angle (corresponding to the rake angle with respect to the clearance angle) for improving the punching property of the material to be processed is very thin or the soft elastic material. ) Is difficult to provide. Further, in a configuration in which the die is integrally formed, it is difficult to provide a shear angle for punching a hard material such as a steel plate while suppressing a punching force (shearing force).

In addition, in the case of an integrated die, if damage occurs in one place, the entire die must be removed from the die set for repair or the entire die must be replaced, resulting in poor maintainability. There are also challenges.

Therefore, the present invention has been made to solve at least one of such problems, it is possible to significantly reduce the cost of the mold device, and it is possible to easily obtain a desired clearance with high accuracy. It is possible to provide a forward tilt angle and a shear angle on the cutting edge of the die, and further, it is intended to provide a mold device having excellent die assembleability and maintainability. Is.

[1] The die device of the present invention is a die device for punching an outer shape of a work from a work material, and is arranged with a punch having a punched cutting edge portion and a cutting edge portion of the punch as a reference. It has a die composed of a plurality of die blocks, and any of the plurality of die blocks can be slid and moved toward the punch, and the plurality of die blocks are provided by clearance defining means. It is characterized in that the clearance between the cutting edge portion of the punch and the cutting edge portion of the die is defined and fixed to the die holder.

[2] In the mold apparatus of the present invention, the tip surface of the other die block is abutted against the linearly extending cutting edge portion of one of the two adjacent die blocks to the die. Therefore, it is preferable that a continuous cutting edge portion is configured.

[3] In the mold apparatus of the present invention, it is preferable that the die block is configured with cutting edge portions on a plurality of two or more sides.

[4] In the mold apparatus of the present invention, when the planar shape of the work has a rounded portion, the die is connected to a corner block having a cutting edge portion constituting the rounded portion and the rounded portion. It is composed of a straight block having a cutting edge portion extending in a straight line capable of being capable, the corner block is fixed at a predetermined position and a predetermined posture, and the straight block is attached to the straight block of the corner block. It is preferable that the clearance can be slid and moved to a position defining the clearance along the connecting tip surface.

[5] In the mold apparatus of the present invention, the punch is composed of a plurality of punch blocks that can be slid and moved, and of two adjacent punch blocks, the cutting edge portion of one of the punch blocks. It is preferable that the cutting edge portion is fixed to the punch holder in a state of forming a continuous cutting edge portion by abutting the tip surface of the other punch block against the back surface.

[6] In the mold apparatus of the present invention, it is preferable that the plurality of die blocks are provided with a forward inclination angle starting from the cutting edge portion.

[7] In the mold apparatus of the present invention, the plurality of die blocks have a shear angle for inclining the cutting edge portion in the length direction and a front inclination angle starting from the inclined cutting edge portion. It is preferable that it is provided.

In the mold device of the present invention, by configuring the die with a plurality of divided die blocks, it is possible to significantly reduce the cost as compared with the conventional integrated die. On the other hand, even in the case of punches, by configuring the punches with a plurality of miniaturized punch blocks, it is possible to significantly reduce the cost as compared with the conventional integrated punch. Further, the mold device can easily and highly accurately regulate the clearance by defining the clearance by using the clearance defining means. In addition, by providing a forward tilt angle and shear angle on the cutting edge of the die (die block), it is possible to remove the outer shape of the work from soft materials to hard materials such as steel plates while suppressing shearing force. Become. According to the present invention, since the die block has cutting edge portions formed on a plurality of sides at two or more locations, it can be freely assembled regardless of the placement position of the die block or the front and back sides, and the assembleability is possible. Can be improved. When the die or punch is damaged, only the damaged die block or punch block can be repaired or replaced, and a mold device having excellent maintainability can be realized.

It is sectional drawing which shows the schematic structure of the mold apparatus 1. It is a top view which shows the structure which saw the punch set 11 from the die set 10 side. It is a top view which shows the example which arranges the punch blocks 16A to 16D with respect to the inside. It is a top view which shows the structure which saw the die set 10 from the punch set 11 side. It is a figure which shows the detailed example of the structure of the die block 12A to 12D. It is a top view explaining the die apparatus 1 which concerns on application example 1, and shows the structure of the die 121 and the punch 161 when the punching shape is a triangle. FIG. 5 is a plan view showing a configuration example of a die 122 and a punch 162 in which the punching shape according to the application example 2 includes an arc (referred to as a rounded portion). It is a top view which shows the structure of the die 130 and the punch 162 which concerns on application example 3. FIG. It is a top view which shows the structural example of the die 123 and punch 163 applied to the punching shape including the curve which concerns on application example 4. FIG. It is a figure which shows the structure of the die 124 which concerns on the 2nd Embodiment. It is a figure which shows the die 125 which concerns on 3rd Embodiment.

Hereinafter, the mold apparatus according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11. It should be noted that each of the figures shown below is a schematic diagram, and the dimensions and scale of the length, width, and thickness are not necessarily the same as the actual ones.

[First Embodiment]
FIG. 1 is a cross-sectional view showing a schematic configuration of the mold apparatus 1. The mold device 1 is a mold device for punching the outer shape of the work W2 from the work material W1 which is a plate material. In some cases, the work W2 becomes a product, and in other cases, the work material W1 after punching out the work W2 becomes a product. In the mold apparatus 1, the material W1 to be processed can be made of resin, Al, Cu, resin, a circuit board, a hard steel plate, or the like, and the material is not particularly limited.

The mold device 1 is composed of a die set 10 and a punch set 11. In the example shown in FIG. 1, the die set 10 is the upper mold and the punch set 11 is the lower mold. However, depending on the structure of the press processing machine, the die set 10 can be the lower mold and the punch set 11 can be the upper mold. be. The die set 10 includes a die 12, a die holder 13 for fixing the die 12, and a back plate 14 for attaching the die holder 13 to a press working machine (not shown). In this example, the die 12 is arranged so that the four divided die blocks 12A, 12B, 12C, and 12D function as one in a ring shape (see FIG. 4). A continuous cutting edge portion 15 is formed on the inner circumference of the die 12.

The punch set 11 includes a punch 16, a punch holder 17 for fixing the punch 16, and a back plate 18 for attaching the punch holder 17 to a press processing machine (not shown). In this example, the punch 16 is arranged so that the four divided punch blocks 16A, 16B, 16C, and 16D function as one in a ring shape (see FIG. 2). A guide block 19 for defining a position (positioning at a predetermined position) while sliding the punch blocks 16C and 16D from the horizontal lateral direction is fixed on the upper surface of the punch holder 17. The configurations of the punch blocks 16A to 16D and the guide block 19 will be described with reference to FIG.

The guide block 19 is arranged on a flat surface 22 on which the punch blocks 16A, 16B, 16C, 16D are fixed. A cutting edge portion 20 is formed on the outer periphery of the punch 16. A clearance 21 is formed between the cutting edge portion 15 of the die 12 and the cutting edge portion 20 of the punch 16. The punch 16 may be integrally formed in a block shape or may be integrally formed in an annular shape without being divided into punch blocks. Although not shown, the positions of the die set 10 and the punch set 11 are controlled with high accuracy by the guide pins or the guide posts.

FIG. 2 is a plan view showing a configuration in which the punch set 11 is viewed from the die set 10 side. Note that FIG. 2 shows an example in which the outer shape (punched shape) of the work W2 is square. The punch 16 is composed of four punch blocks 16A, 16B, 16C, 16D having the same shape and the same dimensions. When the work W2 is rectangular, the facing punch blocks 16A and 16C have the same shape and the same dimensions, and the facing punch blocks 15B and 15D have the same shape and the same dimensions. Each punch block has a cutting edge portion 20 formed on the outer periphery thereof. The punch blocks 16A to 16D are rectangular parallelepipeds.

The punch holder 17 has reference wall surfaces 25 and 26 that intersect each other at 90 degrees. The angle formed between the reference wall surface 25 and the reference wall surface 26 is controlled with high accuracy. The punch block 16A is fixed to the punch holder 17 by three fixing screws 28 in a state where the cutting edge portion 20 is in contact with the reference wall surface 25 and the tip surface 27 is in contact with the reference wall surface 26. The punch block 16B is fixed to the punch holder 17 by three fixing screws 28 in a state where the cutting edge portion 20 is in contact with the reference wall surface 26 and the tip surface 29 is in contact with the back surface 30 of the punch block 16A. In FIG. 2, the directions in which the punch blocks 16A and 16B are moved are represented by solid arrows. In each punch block, the cutting edge portion 20 and the back surface 30 are parallel to each other, and the length, width, and thickness of each punch block are controlled with high accuracy. The tip surface 27 of the punch block 16A is on the extension of the cutting edge portion 20 of the punch block 16B and becomes a part of the cutting edge portion 20.

The cutting edge portion 20 is configured on an extension of a plane perpendicular to the plane 22 (see FIG. 1), which is a reference plane for arranging the punch holder 17 in the thickness direction. Therefore, in the following description, abutting the cutting edge portion 20 or abutting the cutting edge portion 20 means abutting the constituent surface of the cutting edge portion or abutting the constituent surface of the cutting edge portion. Point to. Next, the arrangement of the punch blocks 16C and 16D will be described. The guide block 19 has reference walls 31 and 32 that intersect each other at 90 degrees. The angle formed between the reference wall surface 31 and the reference wall surface 32 is controlled with high accuracy. When assembling the punch blocks 16C and 16D, the guide blocks 19 are arranged at the positions indicated by the alternate long and short dash lines in FIG. 2, and the punch blocks 16C and 16D are placed between the punch blocks 16A and 16B and the guide blocks 19. It is in a position where it can be set.

Similar to the punch blocks 16A and 16B, the punch blocks 16C and 16D are arranged in such a posture that the front end surface 29 of the other punch block can be brought into contact with the back surface 30 of one punch block of the adjacent punch blocks. .. The punch block 16D is arranged so that one end surface 27 can be brought into contact with the reference wall surface 25 of the punch holder 17. Then, the guide block 19 is slid and moved while guiding the cutting edge portions 20 of the punch blocks 16C and 16D on the reference wall surfaces 31 and 32, and the punch blocks 16C and 16D are abutted against the punch blocks 16A and 16B. In FIG. 2, the moving direction of the guide block is indicated by a thick arrow. With the punch blocks 16A to 16D abutting against each other, the guide block 19 is fixed to the punch holder 17 with the four fixing screws 33, and the punch blocks 16C and 16D are respectively attached to the punch holder 17 with the three fixing screws 28. Fix it. A gap 34 is provided between the punch holder 17 and the guide block 19 to avoid mutual interference.

In this way, by combining the punch blocks 16A to 16D and fixing them to the punch holder 17, a continuous square cutting edge portion 20 which is a punched shape of the work W2 is configured. In the configuration example shown in FIG. 2, since each punch block is fixed to the punch holder 17 by three fixing screws 28, even if the punch blocks 16A to 16D are not an integral configuration but an annular configuration. There is no possibility that the punched shape will be deformed when the work W2 is punched.

The example shown in FIG. 2 is a so-called outer reference in which the punch blocks 16A to 16D are arranged with reference to the cutting edge portion 20, but it is also possible to arrange the punch blocks 16A to 16D with respect to the inner reference. be. The configuration of the inner reference will be described with reference to FIG.

FIG. 3 is a plan view showing an example in which punch blocks 16A to 16D are arranged with reference to the inside. The punch blocks 16A to 16D are the same as those described in FIG. 2, and the arrangement configuration of the punch blocks 16 is the same as the configuration example shown in FIG. A convex portion 35 is formed in the central portion of the punch holder 17 so that the punch blocks 16A to 16D project upward from the plane 22 which is the arrangement reference surface. The protrusions 35 have reference walls 36, 37 that intersect each other at 90 degrees. The angle formed between the reference wall surface 36 and the reference wall surface 37 is controlled with high accuracy. The convex portion 35 is formed below the upper surface of the punch 16 and having a height capable of defining the positions of the punch blocks 16A and 16B (see FIG. 1).

The method of assembling the punch blocks 16A to 16D will be explained. First, the punch blocks 16A and 16B are slid and moved so that the back surface 30 comes into contact with the reference wall surfaces 36 and 37. The directions in which the punch blocks 16A and 16B are moved are indicated by solid arrows. The punch blocks 16A and 16B are fixed to the punch holder 17 by three fixing screws 28 in a state of being in contact with the convex portion 35, respectively. The punch block 16A and the punch block 16B are arranged in the same manner as shown in FIG. Similar to the outer reference shown in FIG. 2, the punch blocks 16C and 16D are slid and moved on the reference walls 31 and 32 of the guide block 19 while guiding the cutting edge portions 20 of the punch blocks 16C and 16D, and the punch blocks 16A and 16D are moved. It is fixed to the punch holder 17 by three fixing screws 28 in a state of being abutted against 16B. The direction in which the guide block 19 is moved is indicated by a thick arrow. The guide block 19 is fixed to the punch holder 17 by four fixing screws 33 as in the case of the outer reference. Since the width and length dimensions of each punch block are controlled with high accuracy, it is possible to configure the continuous cutting edge portion 20 with high accuracy even with the inner reference. Subsequently, the configuration of the die 12 will be described with reference to FIG.

FIG. 4 is a plan view showing a configuration in which the die set 10 is viewed from the punch set 11 side. Note that FIG. 4 shows a state in which the punch 16 is fitted into the die 12. Refer to FIG. 1 for the configuration in the thickness direction. In this example, the die 12 is composed of four divided die blocks 12A, 12B, 12C, and 12D having the same shape and the same dimensions. The punch 16 shows a configuration example described in FIG. Die blocks 12A to 12D are rectangular parallelepipeds. The die 12 configured in this way forms a punched shape in which the cutting edge portions 15 of two adjacent die blocks intersect in a straight line so that the corners of the internal angles are not rounded (called rounded). Is possible.

The die blocks 12A to 12D are arranged so as to imitate the cutting edge portion 20 of the punch blocks 16A to 16D. That is, in two adjacent die blocks, the cutting edge portion 15 of one die block is abutted against the tip surface 41 of the other die block to form a continuous cutting edge portion 15 in a square shape. The punch blocks 16A to 16D are arranged on the bottom surface (see FIG. 1) of the recess 23 provided in the die holder 13. Inside the recess 23 (see FIG. 1) provided in the die holder 13, the punch blocks 16A to 16D are configured to be slidable.

A clearance 21 is formed over the entire circumference between the cutting edge portion 20 of the punch 16 and the cutting edge portion 15 of the die 12. The clearance 21 is defined by interposing a shim 40 as a clearance defining means in a straight line portion between the cutting edge portion 20 of the punch 16 and the cutting edge portion 15 of the die 12. By default, the clearance 21 is formed to a desired value. The die blocks 12A to 12D are arranged in the recess 23 as shown in FIG. 4, and then temporarily fixed by three fixing screws 28, respectively. The temporary fixing is a state in which the die set 10 has a tightening force that does not move to the extent that the posture is changed, and a tightening force that can move if the die set 10 is to be moved.

In this state, a shim 40 is interposed between the cutting edge portion 20 of the punch 16 and the cutting edge portion 15 of the die 12, and the punch 16 is fitted into the die 12. Then, the cutting edge portions 15 of the die blocks 12A to 12D are slid toward the punch 16 until they come into contact with the shim 40, and are finally fixed by the fixing screw 28. The main fixing is to fix the work W2 with a tightening force that does not move or deform the die blocks 12A to 12D when punching the work W2. In FIG. 4, the moving directions of the die blocks 12A to 12D are indicated by solid arrows. After fixing each die block, the shim 40 is removed to form a mold device 1 having a clearance 21 corresponding to the thickness of the shim 40. The thickness of the shim 40 is controlled with high accuracy.

The clearance 21 is defined according to the thickness of the work material W1. Therefore, by selecting the shim 40 having a thickness corresponding to the required clearance 21, the clearance 21 can be easily and accurately defined. The configurations of the die blocks 12A to 12D will be described in more detail with reference to FIG.

FIG. 5 is a diagram showing a detailed example of the configuration of the die blocks 12A to 12D. FIG. 5A is a perspective view of the entire configuration as viewed from the punch side, and FIG. 5B is a cross-sectional view showing a cross-sectional view of one die block in the width direction. FIG. 5 illustrates a case where the punched shape is square, and since the assembled structure is the same as the example described in FIG. 4, the description thereof will be omitted. The shapes of the die blocks 12A to 12D are rectangular parallelepipeds. Each of the die blocks 12A to 12D has the same dimensions, the width, length and thickness are processed with high precision, and the four surfaces constituting the long sides constituting the rectangular parallelepiped are subjected to surface finishing processing close to a mirror surface. From this, when viewed in a plan view, the sides A1, A2, B1 and B2 at two locations inside and outside each die block when the die 12 is configured can be the cutting edge portion 15.

In the example shown in FIG. 5, each of the four die blocks is provided with three screw insertion holes 24a, 24b, and 24c for fixing the die block to the die holder 13. The die block 12A will be described as a representative example. The screw insertion hole 24a is arranged at the center position (center of the figure) on the upper surface of the die block 12A, and the screw insertion holes 24b and 24c have the same distance L from the screw insertion hole 24a, respectively. Therefore, if the die block 12A is rotated 180 degrees in the plane direction around the screw insertion hole 24a, the side B1 becomes the cutting edge portion 15. Further, if the front and back sides of the die block 12A are reversed, the sides A2 and the side B2 can become the cutting edge portion 15. The die blocks 12B, 12C, and 12D have the same configuration. By making each die block in such a configuration, each die block can be freely assembled regardless of the arrangement position or the front and back.

In FIG. 5, an example in which the punching shape is square has been described, but if the contact position of one adjacent die block is moved along the other cutting edge portion 15, the range of the length of the die block is reached. It is possible to correspond to a rectangular punched shape with an arbitrary aspect ratio. Further, when the continuous cutting edge portions 15 having different lengths of the facing die blocks 12A and 12B and the facing die blocks 12B and 12D are rectangular, the facing die blocks 12A and 12C and the facing die blocks 12B and 12D are both. The four sides of the long side can be the cutting edge portion 15. Therefore, in the facing die blocks, the die blocks can be freely combined regardless of the arrangement position or the front and back.

In the example described in FIG. 4, the die 12 is composed of four die blocks, but the die block configuration is not limited to this. For example, it is also possible to define the positions of the die blocks 12A and 12B as an integral configuration and then fix them to the die holder 13, and slide the die blocks 12C and 12D to define the positions and fix them to the die holder 13. Further, it is also possible to configure the die blocks 12A and 12B as an integral configuration and the die blocks 12C and 12D as an integral configuration so that the two die blocks are butted against each other to define the position. Further, for example, when arranging the work material W1 to be punched in advance at the positions of the die blocks 12B and 12D, the die is composed of the die block 12A and the die block 12C so that the work W2 is punched out. It can also be configured. If this example is applied in a broader sense, if the work material W1 is punched in advance and only one side of the work W2 is continuous with the work material W1, the die block is configured as one block. It is also possible to cut and cut the work W2, which is included in the category of this example.

Further, the die 12 can be configured to be integrated into a square without dividing the die blocks 12A to 12D. In such a configuration, the clearance 21 can be defined by inserting the die into the punch with the shim 40 interposed therebetween.

The die 12 and the punch 16 described above have been described in the case where the punching shape is a square or a rectangle, but the idea of forming such a die device 1 is not limited to a square, but is applied to a quadrangle such as a rhombus or a trapezoid. Is possible. Further, it can be applied not only to a quadrangle but also to a work W2 having a triangle, a polygon, and a curve. This will be described with reference to FIGS. 6 to 9 by exemplifying an application example.

(Application example 1)
FIG. 6 is an explanatory diagram illustrating the die device 1 according to the first application example, and shows the configuration of the die 121 and the punch 161 when the punching shape is an equilateral triangle. Note that FIG. 6 shows a state in which the punch 161 is fitted into the die 121. The mold device 1 according to Application Example 1 is composed of an equilateral triangular die 121 and a punch 161. The die 121 is composed of divided die blocks 121A, 121B, 121C, and each of the die blocks has a cutting edge portion 151. At each of the three positions that form the top of the triangle, the die 121 is continuous in an equilateral triangle by abutting the cutting edge portion 151 of one of the adjacent die blocks with the tip surface 42 of the other die block. The cutting edge portion 151 is configured.

On the other hand, the punch 161 is composed of divided punch blocks 161A, 161B, 161C, and each punch block has a cutting edge portion 201. Similar to the die 121, the punch 161 is a continuous equilateral triangle cut by abutting the tip surface 43 of the other punch block against one of the adjacent punch blocks at each of the three positions at the top of the triangle. The blade portion 201 is configured. When the punch 161 is an equilateral triangle, the angle of the tip surface 43 of each punch block with respect to the cutting edge portion 201 is the same, so that the tip surface 43 is on the extension of the cutting edge portion 201 and is a part of the cutting edge portion 201. It becomes. Therefore, a continuous equilateral triangular cutting edge portion 201 is configured over the entire outer circumference of the punch 161. The punch 161 can be configured with both the outer reference shown in FIG. 2 and the inner reference shown in FIG. The configuration in the thickness direction can be described by replacing the die 12 with the die 121 and replacing the punch 16 with the punch 161 in FIG.

The clearance 21 between the cutting edge portion 151 of the die 121 and the cutting edge portion 201 of the punch 161 is such that a shim 40 (not shown) is interposed between the cutting edge portion 151 and the cutting edge portion 201 to provide the punch 161. It can be defined by abutting the die blocks 121A, 121B, and 121C on the shim 40 after fitting them into the die 121. Further, in the die 121 configured in this way, since the cutting edge portions 151 composed of two adjacent die blocks intersect in a straight line, the corners of the internal angles are not rounded (called rounded). It is possible to form a punched shape. In such a configuration of the mold device 1, it can be applied not only to regular triangles, right triangles and isosceles triangles, but also to other triangles. It is also possible to integrate two of the three die blocks and slide the other one.

Although not shown, the punched shape can be applied not only to triangles and quadrangles but also to polygons such as pentagons and hexagons. These polygons can be considered to be composed of a combination of triangles, and it is possible to realize a polygonal die and punch by applying the idea of the triangle composition by the die 121 and the punch 161 shown in FIG. Is. Further, the die device 1 described above can be applied to a punched shape including an arc (round) or a curved line. This will be described as Application Example 2, Application Example 3, and Application Example 4 with reference to FIGS. 7, 8 and 9.

(Application example 2)
FIG. 7 is a plan view showing a configuration example of the die 122 and the punch 162 in which the punching shape according to the application example 2 includes an arc (referred to as a rounded portion). Note that FIG. 7 shows a state in which the punch 162 is fitted into the die 122. Note that Application Example 2 shown in FIG. 7 is an example in which the four die blocks 122A to 122D have the same shape and the same dimensions, and the two adjacent die blocks have the same configuration. Therefore, the die blocks 122A and 122B Will be described as a representative example.

The die block 122A is composed of a cutting edge portion 152 having a straight portion S1 and a rounded portion R1 continuous with the straight portion S1. Further, the tip surfaces 44 and 45 at both ends of the die block 122A are formed at right angles to the straight line portion S1. One end surface 45 of the die block 122B is arranged so as to abut on the straight portion S1 of the cutting edge portion 152. Therefore, the die block 122B can be slid and moved along the straight portion S1 of the die block 122A, and the rounded portion R1 of the die block 122B and the straight portion S1 of the die block 122A are continuous.

The arrangement relationship between the die block 122B and the die block 122C, the arrangement relationship between the die block 122C and the die block 122D, and the arrangement relationship between the die block 122D and the die block 122A are the arrangement relationship between the die block 122A and the die block 122B. Since it has the same configuration as the above, the description thereof will be omitted.

On the other hand, the punch 162 is composed of four divided punch blocks 162A, 162B, 162C, 162D. In this example, the four punch blocks 162A to 162D have the same shape and the same dimensions, and the two adjacent die blocks have the same configuration. Therefore, the punch blocks 162A and 162B will be described as typical examples.

In the punch block 162A, the cutting edge portion 202 is composed of a straight portion S2 and a rounded portion R2 continuous with the straight portion S2. Further, the tip surface 46 on the opposite side of the rounded portion R2 of the punch block 162A is formed at a right angle to the straight portion S2. The front end surface 46 of the punch block 162B is arranged so as to abut on the back surface 30 formed of a straight line of the punch block 162A. Since the positions of the punch blocks 162A and 162B are defined by the outer reference or the inner reference with respect to the punch holder 17 as described with reference to FIGS. 2 and 3, the rounded portion R2 of the punch block 162A and the punches are punched. The cutting edge portion 202 of the block 162B is continuous with the cutting edge portion 202.

The arrangement relationship between the punch block 162B and the punch block 162C, the arrangement relationship between the punch block 162C and the punch block 162D, and the arrangement relationship between the punch block 162D and the punch block 162A are the arrangement relationship between the punch block 162A and the punch block 162B. Since it has the same configuration as the above, the description thereof will be omitted. It should be noted that the punch 162 can have an integrated configuration in which four punch blocks are continuously integrated, and an integrated configuration in which the central portion does not open can also be provided.

Further, the clearance 21 can be defined by interposing a shim 40 (see FIG. 4) as a clearance defining means between the cutting edge portion 152 of the die 122 and the cutting edge portion 202 of the punch 162. The shim 40 is arranged in a straight line portion between the cutting edge portion 152 and the cutting edge portion 202. With such a configuration, it is possible to punch out the work W2 having arcs (rounded portions) at four locations on the outer circumference. Further, the die 122 can have a configuration in which the die blocks 122A to 122D are integrated into a square without being divided. Although not shown, even when the punching shape is a triangle or a polygon, it is possible to punch the work W2 having an arc at the top in the same way as in the case of a quadrangle.

(Application example 3)
FIG. 8 is a plan view showing the configuration of the die 130 and the punch 162 according to the third application example. Application example 3 is one of other application examples in which the punched shape includes an arc (rounded portion R1), and shows a configuration example in which the punched shape is square and the rounded portions R1 are provided at the four corners. ing. Since the punch 162 applies the same configuration example as the configuration described with reference to FIG. 7, the description thereof will be omitted. Note that FIG. 8 shows a state in which the punch 162 is fitted into the die 130.

The die 130 is connected to the corner blocks 132A, 132B, 132C, 132D having the cutting edge portion 131A composed of the rounded portion R1 and the rounded portion R1 (cutting edge portion 131A), and the cutting edge portion 131B extending linearly. It is composed of linear blocks 133A, 133B, 133C, 133D having the above. The corner blocks 132A to 132D have the same shape and the same dimensions, and are fixed to the die holder 13 (see FIG. 1) at a predetermined position and a predetermined posture. The positions and postures of the corner blocks 132A to 132D are adjusted with high accuracy with reference to the rounded portion R2 of the punch 162, and the corner blocks 132A to 132D are fixed to the die holder 13 with a fixing screw or the like. The corner blocks 132A to 132D may be integrally formed with the die holder 13.

The straight blocks 133A to 133D are rectangular parallelepipeds and are configured with the same shape and the same dimensions. The straight block 133A is arranged between the corner block 132A and the corner block 132D. The tip surfaces 51 and 52 of the straight block 133A are surfaces perpendicular to the cutting edge portion 131B of the straight block 133A. The tip surfaces 53 and 54 connected to the straight blocks 133A of the corner blocks 132A and 132D are planes parallel to the tip faces 51 and 52 of the straight block. The straight block 133A can be slid toward the punch 162 between the end surface 53 of the corner block 132A and the tip surface 54 of the corner block 132D, and the fixing screw or the like can be moved in contact with the shim 40. Is fixed to the die holder 13. The shim 40 is arranged in a straight line between the die 130 and the punch 162. In FIG. 8, the moving direction of each straight block is indicated by a solid arrow. The distance between the corner block 132A and the corner block 132D is set to be the minimum clearance that allows the linear block 133A to be slid.

The arrangement relationship between the corner blocks 132A and 132B and the straight line block 133B, the arrangement relationship between the corner blocks 132B and 132C and the straight line block 133C, and the arrangement relationship between the corner blocks 132C and 132D and the straight line block 133D are as follows. It is configured in the same manner as the arrangement relationship with the straight line block 133A. With such a configuration, it is possible to configure the cutting edge portion 131 continuous with the die 130. In the die 130 shown in FIG. 8, at least two or more sides of each of the linear blocks facing each other may be the cutting edge portion 131B by the same concept as that described in FIG. Therefore, each straight block can be freely combined regardless of the arrangement position or the front and back.

The configuration of the die 130 of the application example 3 is composed of a corner block arranged at four places and four straight blocks, but the configuration is not limited to such a configuration. Although not shown, a modification of Application Example 3 will be described with reference to FIG. In the die 130 according to this modification, the die block A in which the corner block 132A and the straight line block 133A are integrated, the die block B in which the corner block 132D and the straight line block 133D are integrated, and the corner blocks 132B and 132C are fixed blocks. It is possible to. In such a configuration, a straight line block 133B is placed between the die block A and the corner block 132B, a straight line block 133C is placed between the corner block 132B and the corner block 132C, and the straight line blocks 133B and 133C are adjusted for clearance. Make it a block.

The shapes and arrangement positions of the cutting edge portions of the die blocks A and B and the corner blocks 132B and 132C are fixed to the die holder 13 (see FIG. 4) in a state of being controlled with high accuracy. Therefore, in this example, the clearance 21 can be defined by sliding and moving the orthogonal linear blocks 133B and 133C. The configuration of the fixed block and the clearance adjusting block is not limited to this example, and can be appropriately combined.

Further, although not shown, when the punched shape is quadrangular and the rounded portions R1 are at one place, two places or three places, a configuration using a corner block as in Application Example 3 and FIG. 4 It can be realized by appropriately combining with a configuration using a linear die block as shown in the above. Further, even when the punched shape is a triangle or a polygon, the same idea as that of the application example 3 and the modification of the application example 3 can be applied.

(Application example 4)
Subsequently, a configuration example of the die 123 and the punch 163 applied to the punched shape including the curved line will be described. Application example 4 is a configuration example in which the cutting edge portion 153 of the die 123 and the cutting edge portion 203 of the punch 163 include a curved line.

FIG. 9 is a diagram showing a configuration example of the die 123 and the punch 163 applied to the punching shape including the curve according to the application example 4. The die 123 is composed of four divided die blocks 123A, 122B, 122C, 122D. Each die block has cutting edge portions 153A, 153B, 153C, 153D, each of which includes a curved line. A straight portion L1 is provided on one extension of the curved portion of the cutting edge portion 153A, a straight portion L2 is provided on one extension of the curved portion of the cutting edge portion 153B, and the curved portion of the cutting edge portion 153C has a straight portion L2. A straight portion L3 is provided on one extension, and a straight portion L4 is provided on one extension of the cutting edge portion 153D.

The tip surface 47 of the die block 123B is in contact with the straight portion L1 of the die block 123A, and the tip surface 48 of the die block 123C is in contact with the straight portion L2 of the die block 123B. Further, the tip surface 49 of the die block 123D is in contact with the straight portion L3 of the die block 123C, and the tip surface 50 of the die block 123A is in contact with the straight portion L4 of the die block 123D. In the adjacent die blocks in this way, the continuous cutting edge portion 153 including the curved line is configured by abutting the tip surface of the other die block on the straight line portion of the cutting edge portion of one die block. Although not shown, the shims 40 are arranged at least four places so that the clearance 21 is constant between the die 123 and the punch 163.

The lengths of the straight portions L1, L2, L3, and L4 are set to be longer than the contact lengths of the tip surfaces 47 to 50 that abut on each straight portion. By doing so, among the adjacent die blocks, any of the straight portions L1, L2, L3, L4 of one die block is combined with the tip surfaces 47, 48, 49, 50 of the other die block. It is possible to move the slide. A straight line portion is interposed between the cutting edge portion 153B and the cutting edge portion 153C, between the cutting edge portion 153C and the cutting edge portion 153D, and between the cutting edge portion 153D and the cutting edge portion 152A. .. In other words, if it is a constituent requirement that the cutting edge portion extending in a straight line of one die block and the tip surface of the other die block are brought into contact with each other in two adjacent die blocks, a punched shape having a curved line is provided. It is possible to construct the cutting edge portion of.

Note that the concept of application example 3 (see FIG. 8) can also be applied to application example 4. Although not shown, a configuration in which corner blocks are arranged at the four corners shown in FIG. 9 and a die block for clearance adjustment is arranged between the corner blocks can be applied.

Note that the punch 163 shown in FIG. 9 does not have a configuration in which a plurality of punch blocks are connected in an annular shape, but has an integrated configuration having a cutting edge portion 203 on the outer periphery. Since the cutting edge portion 203 can be formed by processing the outer periphery of the punch main body portion, it can be formed corresponding to a punched shape including a straight line and a curved line.

[Second Embodiment]
Subsequently, the configuration of the die 124 according to the second embodiment will be described with reference to the drawings. Each die block of the first embodiment described above has a rectangular cross section (longitudinal cross section) shape orthogonal to the long side (cutting edge portion) 154, whereas in the second embodiment, each die block has a rectangular shape. It is characterized in that a forward inclination angle θ1 is provided on the cutting edge portion of the die block. The case where the punched shape is square will be described as an example.

10A and 10B are views showing the configuration of the die 124 according to the second embodiment, FIG. 10A is a perspective view of the die 124 as viewed from the punch 16 side, and FIG. 10B is a die block 124A. It is a vertical sectional view of. Refer to FIG. 1 for the configuration in the thickness direction. The die 124 is composed of four divided die blocks 124A. The die block 124A is configured with a forward inclination angle θ1 that is inclined outward in the width direction on the upper surface side with the cutting edge portion 154 as a starting point. The die 124 is configured by bringing the tip surface 51 of the other die block into contact with the cutting edge portion forming surface 154a of one of the two adjacent die blocks.

In the die block 124A, the vertical surface including the cutting edge portion 154 is referred to as the cutting edge portion constituent surface 154a. The cutting edge portion constituent surface 154a is a flat surface perpendicular to the die holder 13 (see FIG. 1). The cutting edge portion 154 (ridge line) of each die block is continuous at the same height. The punch has the configuration shown in FIGS. 2 and 3. The front inclination angle θ1 is set according to the material and thickness of the work material W1. The idea of forming the forward inclination angle θ1 on the die block is that the cutting edge portion constituent surface 154a is extended by a plane regardless of the punching shape, and the ridgeline of the cutting edge portion is continuous at the same height. As long as it is constructed, it can be applied to triangles and other quadrangles.

In the die block 124A shown in FIG. 10, the front inclination angle θ1 is formed over the entire upper surface on the punch 16 side starting from the cutting edge portion 154. Although not shown, the cutting edge portion 154 having a forward inclination angle θ1 on the long side of the die block 124A can be formed as a ridge. Such ridge cutting edge portions 154 can be configured on both sides of the die block 124A in the width direction, and even if the die block has a forward inclination angle θ1, each die block can be freely arranged regardless of the arrangement position. It will be possible to assemble it. Further, the cutting edge portion 154 of the convex strip can be formed on the surface side fixed to the die holder 13, and each die block can be freely assembled regardless of the arrangement position and the front and back.

[Third Embodiment]
Subsequently, the mold apparatus according to the third embodiment will be described with reference to FIG. In the third embodiment, the front tilt angle θ1 is configured in the cutting edge portion 154 of each die block in each die block described in the second embodiment described above. It is characterized in that an inclination angle θ1 and a shear angle θ2 inclining in the length direction of the cutting edge portion of each die block are provided. The case where the punched shape is square will be described as an example. Refer to FIG. 1 for the configuration in the thickness direction.

11A and 11B are views showing the die 125 according to the third embodiment, FIG. 11A is a perspective view of the die 125 as viewed from the punch 16 side, and FIG. 11B is a front view of the die block 125A. 11 (c) is a right side view of the die block 125A, FIG. 11 (d) is a left side view of the die block 125A, and FIG. 11 (e) is a perspective view of the die block 125A. The die 125 is composed of four divided die blocks 125A, 125B, 125C and 125D. The die blocks 125A to 125D have the same shape and the same dimensions. The die block 125A will be described as a representative example. The die block 125A includes a cutting edge portion 155 that is inclined from the right end portion 125Aa to the left end portion 125Ab. This tilt angle is called the shear angle θ2. Further, the die block 125A is provided with a forward inclination angle θ1 starting from the ridgeline of the cutting edge portion 155.

As shown in FIG. 11A, in two adjacent die blocks, the height of the cutting edge portion 155 of the die block 125B is higher (corresponding to the right end portion 125Aa side of the die block 125A, and the shear angle θ2). The tip surface 55 of the die block 125A is on the cutting edge constituent surface 155a on the side where the height of the cutting edge portion 155 of the die block 125A is low (the left end portion 125Ab side and the end point side of the shear angle θ2). Be abutted. On the other hand, the tip surface 55 on the start point side of the shear angle of the die block 125A is in contact with the cutting edge portion constituent surface 155a on the end point side of the shear angle of the die block 125D. The arrangement relationship between the die block 125B and the die block 125C and the arrangement relationship between the die block 125C and the die block 125D are the same as the arrangement relationship between the die block 125A and the die block 125B and the arrangement relationship between the die block 125C and the die block 125D. The punch has the configuration described in the first embodiment (see FIG. 2).

In the example shown in FIG. 11, the anteversion angle θ1 and the shear angle θ2 are configured such that the cutting edge portion 155 intersects the ridge line 60 of the adjacent die block formed by the anteversion angle θ1. .. At the four corners of the die 125, of the two adjacent die blocks, the top portion 61 of the cutting edge portion 155 of one die block protrudes toward the punch block side from the cutting edge portion 155 of the other die block. Therefore, in the punching operation, a shearing force is applied to the workpiece W1 in a clockwise direction from each top portion 61. Further, since the shearing force applied to each of the four sides constituting the punched shape is the same, it is possible to suppress the occurrence of warpage or deformation in the work W2.

The butt configuration of the die blocks 125A to 125D is not limited to the configuration shown in FIG. 11 (a). Although not shown, in two adjacent die blocks, for example, the tip surface 55 on the start point side of the shear angle θ2 of the die block 125B is the cutting edge constituent surface 155a on the start point side of the shear angle θ2 of the die block 125A. It is possible to hit on. Therefore, in the two adjacent die blocks, the tip surface 55 on the end point side of the shear angle θ2 is abutted against the cutting edge portion constituent surface 155a on the end point side of the shear angle θ2. In such a configuration, the starting point (vertex) of the facing shear angle θ2 projects toward the punch block side. Therefore, the shearing force is applied to the workpiece W1 along the cutting edge portion 155 composed of the shear angle θ2 and the forward tilt angle θ1 in the direction of 90 degrees from each of the facing vertices, and the shearing force is suppressed. However, it is possible to punch out hard materials such as steel plates.

In FIG. 11, the case where the punching shape is a square has been described as an example, but even if it is a rectangle, a triangle, or a polygon, if the shape of the cutting edge portion is composed of a flat surface, the anteversion angle θ1 and It is possible to construct a die having a shear angle θ2. When the lengths of the constituent die blocks are different, it is preferable to make the shear angle θ2 of each die block the same, but it is also possible to make the shear angle θ2 of each die block not the same. Further, as the configuration of the die 125, it is also possible to provide only the shear angle θ2 without providing the front inclination angle θ1 according to the material and thickness of the work material W1.

The mold device 1 according to the first embodiment described above is a mold device for removing the outer shape of the work W2 from the work material W1. The die device 1 comprises a punch 16 having a punched cutting edge portion 20 and a die 12 composed of die blocks 12A, 12B, 12C, and 12D arranged with the cutting edge portion 20 of the punch 16 as a reference. Have. Further, any of the die blocks 12A, 12B, 12C and 12D can be slid and moved toward the cutting edge portion 20 of the punch 16, and the die blocks 12A, 12B, 12C and 12D are used as clearance defining means. The shim 40 is fixed to the die holder 13 in a state where the clearance 21 between the cutting edge portion 20 of the punch 16 and the cutting edge portion 15 of the die 12 is defined.

As the material of the die used for high-precision external punching, it is common to use silicon nitride or cemented carbide, which are expensive materials. Therefore, if the size of the work W2 is increased, the integrated die according to the conventional technique is inevitably increased in size and becomes expensive. However, according to the present invention, the continuous cutting edge portion 15 is configured by assembling the four divided die blocks 12A, 12B, 12C, and 12D. With such a configuration, even if the work W2 becomes large, the cost can be significantly reduced as compared with the conventional integrated die.

Further, in the mold apparatus 1, a shim 40 is interposed between the cutting edge portion 20 of the punch 16 and the cutting edge portion 15 of the die 12, and the die blocks 12A to 12D are slid and abutted against the shim 40. And are arranged. That is, the positional relationship between the die 12 and the punch 16 is defined by the thickness of the shim 40 with reference to the cutting edge portion 20 of the punch 16. That is, since the clearance 21 can be defined by the thickness of the shim 40, the clearance 21 can be managed easily and with high accuracy.

Further, since each of the divided die blocks 12A to 12D has a simplified shape, the machining can be simplified and the cutting edge portion 15 with high accuracy can be formed. Further, since a large-sized and complicated processing equipment for forming a conventional integrated die is not required, it is possible to reduce the cost including the equipment cost.

The die 12 has a continuous cutting edge by abutting the tip surface 41 of the other die block 12A against the cutting edge portion 15 extending linearly of one of the two adjacent die blocks 12A and 12B. The unit 15 is configured. The die blocks 12C and the die blocks 12D are also configured in the same manner as the die blocks 12A and 12B.

With such a configuration, each of the die blocks 12A to 12D can be slid and moved along the cutting edge portion 15 of the adjacent die blocks, and the clearance 21 can be managed with high accuracy. Become. Further, according to such a configuration, when one of a plurality of die blocks is damaged, only the damaged die block can be repaired or replaced, and the mold device has excellent maintainability. It becomes possible to realize 1.

In addition, the die block is configured with cutting edges on multiple sides at two or more locations. In the example shown in FIG. 5, the cutting edge portion 15 is configured on the sides A1 and A2 and the sides B1 and B2 of the die blocks 12A to 12D. By making each die block in such a configuration, it is possible to freely assemble each die block regardless of the arrangement position or the front and back, and it is possible to dramatically improve the assembleability of the mold device 1. Will be. Further, by this, it is possible to realize the mold apparatus 1 having excellent maintainability.

Further, when the planar shape of the work W2 has the rounded portion R1, the die 130 may be connected to the corner blocks 132A, 132B, 132C, 132D, and the rounded portion R1 having the cutting edge portion 131A constituting the rounded portion R1. It is composed of straight blocks 133A, 133B, 133C, 133D having a cutting edge portion 131B extending in a linear shape, and the corner blocks 132A to 132D are fixed at a predetermined position and a predetermined posture, and the straight blocks 133A to 133D are fixed. Is configured to be slidable to a position defining the clearance 21 along the tip surfaces 53, 54 connected to the straight block of the corner block.

The die 130 can be combined with the corner blocks 132A to 132D and the straight blocks 133A to 133D to form an annular continuous cutting edge portion 131 having a rounded portion R1. A similar effect can be obtained. Further, by changing the lengths of the straight line blocks 133A to 133D which are rectangular parallelepipeds, it is possible to easily change the size of the punched shape having the rounded portion R1 or to make it rectangular.

In the mold apparatus 1, the punch 16 is composed of punch blocks 16A, 16B, 16C, 16D that can be slid and moved. The punch 16 constitutes a continuous cutting edge portion 20 by abutting the tip surface 29 of the other punch block against the back surface 30 of the cutting edge portion 20 of one of the two adjacent punch blocks. It is fixed to the punch holder 17 with.

The punch blocks 16A and 16B are arranged with reference to the reference wall surfaces 25 and 26 of the punch holder 17. The punch blocks 16C and 16D are arranged with reference to the punch blocks 16A and 16B. The punch 16 constitutes an annular continuous cutting edge portion 20 by arranging a plurality of divided punch blocks 16A to 16D in the same way as the die 12 described above. With such a configuration, the cost of the punch 16 can be significantly reduced as compared with the conventional integrated punch, and the equipment cost can be reduced. Further, when one of a plurality of punch blocks is damaged, it is possible to repair or replace only the damaged punch block, and it is possible to realize a mold device 1 having excellent maintainability. Become.

Further, in the die 124 according to the second embodiment, the die blocks 124A, 124B, 124C, and 124D are provided with a forward inclination angle θ1 starting from the cutting edge portion 154. Providing the anteversion angle θ1 means that the cutting edge angle of the cutting edge portion 154 is made acute, and the work material W1 is a thin and soft material such as a sheet or a film as well as a metal plate. It is possible to perform good punching.

Further, in the die 125 according to the third embodiment, the die blocks 125A, 125B, 125C, and 125D are provided with a shear angle θ2 for inclining the cutting edge portion 155 in the length direction and an inclined cutting edge portion 155. A forward tilt angle θ1 as a starting point is provided.

By providing the shear angle θ2 on the die 125, it is possible to punch out a hard material such as a steel plate while suppressing the shearing force. Further, by forming the cutting edge portion 155 in which the shear angle θ2 and the forward inclination angle θ1 are combined, the work material W1 may be a thin and soft material such as a sheet or a film, or a hard material such as a steel plate. Even if it is, it is possible to perform a good punching process.

1 ... Mold device, 10 ... Die set, 11 ... Punch set, 12, 121 to 125, 130 ... Die, 12A to 12D, 121A to 121C, 122A to 122D, 123A to 123D, 124A, 125A to 125D ... Die block , 13 ... Die holder, 14, 18 ... Back plate, 15, 131, 131A, 131B, 151 to 153 ... Die cutting edge, 153A to 153D, 154, 155 ... Die block cutting edge, 16, 161 to 163. ... Punch, 16A-16D, 161A-161C, 162A-162D ... Punch block, 17 ... Punch holder, 19 ... Guide block, 20, 201-203 ... Punch cutting edge, 21 ... Clearance, 22 ... Flat surface, 23 ... Recesses, 24a, 24b, 24c ... Screw insertion holes, 25, 26, 31, 32, 36, 37 ... Reference wall surface, 27, 29, 46 ... Punch block tip surface, 28, 33 ... Fixing screw, 30 ... Punch block Back surface, 34 ... Gap, 35 ... Convex part, 40 ... Sim (clearance defining means), 41-45, 47-50, 55 ... Die block tip surface, 51, 52 ... Straight block tip surface, 53, 54 ... Tip surface of corner block, 60 ... Ridge line of cutting edge, 61 ... Top of cutting edge, 125Aa ... Right end, 125Ab ... Left end, 132A, 132B, 132C, 132D ... Corner block 133A, 133B, 133C, 133D ... Straight block, 154a, 155a ... Cutting edge constituent surface, A1, A2, B1, B2 ... Side, W1 ... Work material, W2 ... Work, R1, R2 ... R part, S1, S2, L1 ~ L4 ... straight line part, θ1 ... forward tilt angle, θ2 ... shear angle

Claims (7)

It is a mold device that removes the outer shape of the work from the work material.
A punch with a punched cutting edge and
A die composed of a plurality of die blocks arranged with reference to the cutting edge portion of the punch, and
Have,
Any of the plurality of die blocks can be slid and moved toward the cutting edge portion of the punch.
The plurality of die blocks are fixed to the die holder in a state where the clearance between the cutting edge portion of the punch and the cutting edge portion of the die is defined by the clearance defining means.
A mold device characterized by that. In the mold apparatus according to claim 1,
Of the two adjacent die blocks, the die has a continuous cutting edge portion formed by abutting the tip surface of the other die block against the cutting edge portion extending linearly of one die block. ,
A mold device characterized by that. In the mold apparatus according to claim 1 or 2.
The die block has cutting edge portions formed on a plurality of sides at two or more locations.
A mold device characterized by that. In the mold apparatus according to claim 1,
When the planar shape of the work has a rounded portion,
The die is composed of a corner block having a cutting edge portion constituting the rounded portion and a straight block having a linearly extending cutting edge portion that can be connected to the rounded portion.
The corner block is fixed in a predetermined position and a predetermined posture, and is fixed.
The straight block is configured to be slidable to a position defining the clearance along the tip surface of the corner block connected to the straight block.
A mold device characterized by that. In the mold apparatus according to any one of claims 1 to 4.
The punch is composed of a plurality of punch blocks that can be slidably moved, and the tip surface of the other punch block is abutted against the back surface of the cutting edge portion of one of the two adjacent punch blocks. By doing so, it is fixed to the punch holder in a state where a continuous cutting edge is configured.
A mold device characterized by that. In the mold apparatus according to claim 1 or 2.
The plurality of die blocks are provided with a forward inclination angle starting from the cutting edge portion.
A mold device characterized by that. In the mold apparatus according to claim 1 or 2.
The plurality of die blocks are provided with a shear angle for inclining the cutting edge portion in the length direction and a front inclination angle starting from the inclined cutting edge portion.
A mold device characterized by that.

Images