JP2005046978A - Punching die for punching machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching die for a punching machine that can be disposed of for each material and can be reduced in weight.
In a die 10 for a punching machine in which a cutting blade 20 and a ruler 21 for punching a sheet material 100 are inserted into a fixing groove formed in a die board 30 and fixed, the die board includes at least a top plate 31 and a bottom plate 32. And the middle plate 33 sandwiched between the top plate and the bottom plate and thicker than the top plate and the bottom plate, and forming the top plate and the bottom plate and the middle core with different materials, And it fixes in a laminated state, without mutually bonding.
[Selection] Figure 1

Description

  The present invention relates to a punching die for a punching machine including a die board having a cutting blade and a ruler for punching a sheet material into a predetermined shape.

  2. Description of the Related Art Conventionally, a punching machine has been used to punch out a predetermined shape punched piece such as a developed box from a sheet material such as a synthetic resin film, thin paper, or thick paper and to form a ruled line. A conventional punching machine includes a punching die and a face plate opposed to the die, and presses the punching die against a face plate on which the sheet material is placed, thereby punching the sheet material and forming ruled lines.

  As such a punching die for a punching machine, a veneer plate is provided with a cutting blade and a ruler formed by bending a band-shaped plate material in accordance with the shape of the punched piece, and a fixing groove for holding the cutting blade and the base end side of the ruler. And a die board made of metal or the like (see, for example, Patent Document 1).

  Such a die-cutting die board for a punching machine increases in weight and cost when formed of a metal material, and when formed of foamed resin or the like, the weight is reduced and the cost is reduced, but the strength is reduced. There is a problem that it ends up.

  For this reason, as a die-cutting die board for a punching machine, it is composed of a top plate and a bottom plate made of metal, and a core made of foamed resin provided between the top plate and the bottom plate, and after stacking each layer, A product obtained by foaming a resin and joining a front plate, a core, and a bottom plate is commercially available. According to this die board, it is possible to reduce the weight by forming the core with the foamed resin, and it is possible to maintain the strength of the die board with the top plate and the bottom plate.

  However, in the die cutting for a punching machine using the die board composed of the three layers of the top plate, the center core, and the bottom plate described above, each layer of the die board is bonded by foaming the center core, so that it is difficult to divide each layer. There is a problem that each layer of different materials cannot be separated and discarded.

Japanese Unexamined Patent Publication No. 09-193081 (page 4, FIG. 1)

  In view of such circumstances, an object of the present invention is to provide a punching die for a punching machine that can be disposed of and discarded for each material and can be reduced in weight.

  A first aspect of the present invention that solves the above problem is a punching die for a punching machine in which a cutting blade and a ruler for punching a sheet material are inserted into a fixing groove formed in the die board and fixed. A plate and a bottom plate, and sandwiched between the top plate and the bottom plate, and is composed of a thicker core than the top plate and the bottom plate, and the top plate and the bottom plate are made of different materials. The punching die for a punching machine is formed and fixed in a laminated state without being bonded to each other.

  According to a second aspect of the present invention, in the first aspect, each layer of the top plate, the core and the bottom plate is inserted through a fixing hole formed through the top plate, the core and the bottom plate in the thickness direction. The punching die for a punching machine is fixed to each other by a fixed member made of a bar-shaped member.

  According to a third aspect of the present invention, in the first or second aspect, the front plate is provided with a pressing member made of an elastic body that surrounds the cutting blade and whose tip protrudes further forward than the cutting edge of the cutting blade. And the fixing groove is provided across the layers through the thickness direction of the top plate, the core, and the bottom plate, and the base side of the cutting blade is held by the bottom plate. It is in a die for a punching machine.

  In the present invention, since the three layers of the top plate, the middle core, and the bottom plate constituting the die board are fixed without being bonded to each other, the front plate, the middle core, and the bottom plate are formed of different materials to reduce the weight. Even when the cost is reduced, each layer of different materials can be easily divided, separated and discarded.

  As described above, in the punching die for the punching machine according to the present invention, the layers of different materials constituting the die board are not bonded to each other and are fixed to each other in a laminated state, thereby reducing the weight and cost of the die board. Each layer can be easily divided and easily separated and discarded.

  Hereinafter, the present invention will be described in detail based on embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of an essential part of a punch for a punching machine according to Embodiment 1 of the present invention.

  As illustrated in FIG. 1, the punching die 10 includes a cutting blade 20 and a die board 30 that holds the cutting blade 20.

  The cutting blade 20 and the ruled line are formed by bending a strip-shaped plate material in accordance with the shape of the punched piece, and are fixed to the die board 30.

  The die board 30 is configured by three layers of a flat plate 31 and a bottom plate 32 and a core 33 sandwiched between the table 31 and the bottom plate 32 and thicker than the thickness of the table 31 and the bottom plate 32. In addition, at least the front plate 31, the bottom plate 32, and the core 33 are formed of different materials, and the layers are fixed to each other without being bonded to each other and can be divided.

  Examples of the front plate 31 and the bottom plate 32 constituting the die board 30 include a veneer plate, metal, and resin, and examples of the center core 33 include foamed resin. In the present embodiment, the front plate 31 is formed of 3 to 5 mm metal, and the bottom plate 32 is formed of 3 to 5 mm foamed polyethylene terephthalate (PET). Further, the core 33 was formed of a foamed resin of 8 to 10 mm so that the thickness of the entire die board 30 was about 18 mm.

  Thus, by forming the core 33 with the foamed resin, the die board 30 can be reduced in weight and cost, and the strength of the die board 30 can be maintained by the top plate 31 and the bottom plate 32.

  Further, the die board 30 is provided with a fixing hole 34 that penetrates in the thickness direction and communicates with each of the layers 31 to 33. A rod-shaped fixing member 35 is inserted into the fixing hole 34, and the layers 31 to 33 are fixed in a stacked state without being bonded to each other by the fixing member 35 inserted through the fixing hole 34. Examples of the fixing member 35 include a knock pin and a screw. In this embodiment, the fixing member 35 made of a screw is inserted from each of the front plate 31 side and the bottom plate 32 side where the fixing hole 34 is opened, and each fixing member 35 is screwed to the inner core 33 to be connected to the front plate 31. The center core 33 and the bottom plate 32 are fixed while fixing the center core 33 so that the layers 31 to 33 are fixed to each other in a stacked state.

  Further, the die board 30 is provided with a fixing groove 36 into which the cutting blade 20 and the cutting edge side of the rule are inserted. Similarly to the fixing hole 34, the fixing groove 36 also communicates with the layers 31 to 33 of the die board 30 and is provided through the die board 30 in the thickness direction.

  Then, such a fixed groove 36 is inserted until the end surface on the cutting edge 20 reaches the surface of the bottom plate 32 so that the cutting edge side of the cutting blade 20 is held by the bottom plate 32, and the cutting edge side is exposed. It is held so as to protrude from the plate 31 by a predetermined amount. Although not shown, the die board 30 holds a ruled line so that the cutting edge side protrudes from the front plate 31 by a predetermined amount, like the cutting blade 20.

  In addition, although the formation method of the fixing hole 34 and the fixing groove 36 of the die board 30 is not specifically limited, For example, it can form by laser processing, an end mill process, etc. Moreover, the fixing hole 34 and the fixing groove 36 may be processed in each of the layers 31 to 33, or may be processed in a state where at least a part thereof is laminated.

  Since such a die board 30 can easily divide each layer of the top plate 31, the core 33, and the bottom plate 32 by removing the fixing member 35, the layers 31 to 33 formed of different materials can be easily separated. It can be discarded separately.

  A pressing tool 40 formed of an elastic material such as sponge or pure rubber is attached to the front plate 31 of the die board 30 so as to surround the cutting blade 20 from both sides. The tip of the pressing tool 40 protrudes slightly (for example, about 1 to 2 mm) ahead of the cutting edge of the cutting blade 20.

  As shown in FIG. 1 (b), such a punching die 10 for a punching machine removes the fixing member 35 that fixes the bottom plate 32 and the core 33 of the die board 30 and removes the bottom plate 32 from the core 33. The blade base side of the cutting blade 20 protrudes from the surface of the core 33 by the thickness of the bottom plate 32. When the cutting blade 20 protruding from the center core 33 is pushed into the cutting edge side, the cutting edge of the cutting blade 20 protrudes further than the presser 40, so that the cutting blade 20 can be easily held by grasping the protruding cutting edge with a gripping tool or the like. Can be extracted. As described above, the cutting blade 20 can be easily extracted from the die board 30 so that the cutting blade 20 can be easily replaced, and can be easily separated and discarded for each material. Note that the ruler fixed to the die board 30 together with the cutting blade 20 protrudes a predetermined amount from the top plate 31 of the die board 30 in advance without removing the bottom plate 32 of the die board 30, so that the protruding blade edge can be easily grasped. Can be extracted.

  Here, an example of a punching machine using such a punching die 10 will be described with reference to FIG. FIG. 2 is a schematic sectional view of the punching machine.

  As shown in FIG. 2, the punching machine 50 has an upper surface plate 51 and a lower surface plate 52, and the lower surface plate 52 is moved away from the fixed upper surface plate 51 by a driving device (not shown). It is driven in the direction. A chase 53 is attached to the lower surface of the upper surface plate 51, and a dead plate 54 is attached to the upper surface of the lower surface plate 52. Here, the chase 53 is one of general-purpose jigs that are accurately positioned and fixed to the upper surface plate 51 of the punching machine 50, and the dead plate 54 is a general-purpose jig that is accurately positioned and fixed to the lower surface plate 52. one of.

  The punching die 10 described above is fixed to the upper surface plate 51, and a counter plate 55 made of a metal material is fixed on the dead plate 54.

  On the upper surface of the counter plate 55 fixed on the dead plate 54, a concave groove 56 is formed in a region corresponding to the ruled line 21, and the other part is a flat receiving surface 57.

  In such a punching machine 50, a sheet material 100 such as a synthetic resin film, thin paper, or thick paper is placed on the upper surface of the counter plate 55, and the lower surface plate 52 is raised from below to be placed on the receiving surface 57 of the counter plate 55. The pressing tool 40 is pressed and elastically deformed to shrink, and the cutting blade 20 is pressed against the receiving surface 57 of the counter plate 55 with a predetermined pressure, so that the sheet material 100 can be punched into a desired shape. In addition, after the lower platen 52 is lowered, the presser 40 returns to its original state by its own elastic recovery force and pushes back the sheet material 100 to release the sheet material 100 from the cutting blade 20.

  As the lower surface plate 52 is raised, the ruled line 21 presses the sheet material 100 into the recessed groove 56, and a ruled line is formed on the sheet material 100 pressed into the recessed groove 56.

  Here, the punching piece formed using such a punching machine 50 is demonstrated. FIG. 3 is a plan view showing the punched piece.

  As shown in FIG. 3, the punched piece 110 formed by punching the sheet material 100 with the punching machine 50 has a desired shape, and at the same time, a cut line 111 and a ruled line (folded line) 112 that becomes a fold. Have Here, the cut line 111 is formed by the tip of the cutting blade 20 coming into contact with the receiving surface 57 of the counter plate 55, and the ruled line 112 is formed by inserting the tip of the rule 21 into the concave groove 56. It is formed.

(Other embodiments)
As mentioned above, although embodiment of this invention was described, the punching die for punching machines is not limited to what was mentioned above.

  For example, in Embodiment 1 described above, the die board 30 is configured by three layers of the top plate 31, the core 33, and the bottom plate 32, but the die board is particularly limited as long as it is configured by at least three layers. It is not something.

  In the first embodiment described above, the layers 31 to 33 of the die board 30 are stacked by inserting the fixing member 35 from the front plate 31 side and the bottom plate 32 side, and screwing the fixing member 35 to the core 33. However, the present invention is not limited to this. For example, a fixing member made of a screw is inserted from either the front plate or the bottom plate, and is screwed to the core and the other layer to form a laminated state. May be fixed to each other. A knock pin or the like may be used as the fixing member. In any case, as long as the layers of the die board are not bonded and are fixed to each other in a stacked state so as to be separable, the configuration is not limited to the above-described configuration.

It is principal part sectional drawing of the die for punching machines which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing of the punching machine which concerns on Embodiment 1 of this invention. It is a top view of the punching piece which concerns on Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cutting die for cutting machine 20 Cutting blade 21 Rule 30 Die board 31 Top board 32 Bottom board 33 Core 35 Fixing member 40 Pressing tool 50 Punching machine 100 Sheet material 110 Punching piece

Claims (3)

In a punching die for a punching machine that inserts and fixes a cutting blade and a rule for punching a sheet material into a fixed groove formed in a die board,
The die board is composed of at least a front plate and a bottom plate, and a core that is sandwiched between the front plate and the bottom plate and is thicker than the front plate and the bottom plate, and the top plate, the bottom plate, and the core A punching die for a punching machine, wherein the punching die is formed of a different material and fixed in a laminated state without being bonded to each other. In Claim 1, each layer of the front plate, the center core, and the bottom plate is mutually fixed by a fixing member made of a rod-like member inserted through a fixing hole formed through the top plate, the center core, and the bottom plate in the thickness direction. Punching die for a punching machine characterized by being fixed. 3. The pressing member according to claim 1, wherein the front plate is provided with a pressing member that is formed of an elastic body that surrounds the cutting blade and whose tip protrudes further forward than the cutting edge of the cutting blade, and the fixing groove is the front plate. A punching die for a punching machine, which is provided across the layers penetrating in the thickness direction of the core and the bottom plate, and the base side of the cutting blade is held by the bottom plate.

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