JP2006198715A - Extruding tool and punching die using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extruding tool simply constituted to be easily handled and a punching die using the extruding tool. <P>SOLUTION: This extruding tool is provided with a first plate member to be a plate material having prescribed thickness and a prescribed height, an elastic body and a second plate member to be a plate material having prescribed thickness and a prescribed height, instead of a conventional extruding tool for extruding a punching piece at a gap of a pair of punching blades for punching a sheet-like material into a prescribed punched shape. The first plate member and the second plate member are overlapped in the height direction across the elastic body to have a belt shape of a fixed height as a whole. An edge part which is not in contact with the elastic body of the first plate member is made to hit on the punching piece. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an extrusion tool for extruding a punched piece in a gap between a pair of punching blades for punching a sheet-like material into a predetermined punching shape, and a punching die using the same. In particular, the present invention relates to an extrusion tool characterized by the structure of the extrusion tool and a punching die having the extrusion tool.

In order to produce a corrugated cardboard packaging box, a paper box, or a plastic case, a manufacturing method in which a desired shape is punched from a sheet-like material such as corrugated cardboard, paper, or a plastic sheet is often used.
A punching device is used to use this manufacturing method.
The punching device includes a die holder (die holder), a punching die (die), and a pushing tool (anvil).
The punching die is fixed to the die holder.
The punching die includes a die base plate (die plate), a punching blade, and an extrusion tool.
The mold base plate is a plate material that holds a punching blade and a pusher arranged in a desired shape corresponding to the shape to be punched. For example, the mold base plate is a wooden plate member having a predetermined thickness.

The punching blade is referred to as a punching blade for external punching (hereinafter referred to as an external punching blade when distinguished) and a punching blade for forming a punched hole (hereinafter referred to as a punching punching blade when distinguished from each other). ).
The outer shape punching blade is embedded in the die base plate by exposing the blade from the surface of the die base plate along the outer shape of the die to be punched.
The punching blade for a punching hole is embedded in the die base plate by exposing the blade from the surface of the die base plate along the outline of the punching hole to be punched.
The blade of the punching blade is exposed at a predetermined height from the surface of the mold base plate. This exposed part is called a blade girder.

The pushing tool pushes a punched piece from the punching blade. For example, the sheet-like member remaining surrounded by the punching blade when the punching shape is punched becomes a punched piece.
In general, the pusher is an elastic body such as a synthetic rubber block having a thickness larger than the height of the blade beam.
A plurality of elastic bodies are mounted side by side on the mold base plate along the blade girder of the outer punching blade.
Further, the elastic body or the plurality of elastic bodies are attached to the gaps of the punching blades for punching holes that surround the punching holes.

  The pushing tool is a block that presses the sheet-like material against a punching die fixed to the die base plate.

The operation of the punching device will be described below.
A sheet-like material is inserted into the gap between the mold base plate and the pusher.
Press the pushing tool against the mold base plate.
The sheet material is pressed against the punching die. The pusher is compressed by the pressing force of the pusher.
The cutting edge of the punching blade punches a sheet-like material and punches a punching shape having a desired shape.
Pull the pusher away from the mold base plate.
The pusher tries to restore the compressed shape, and the sheet-like material is pulled away from the punching die by the compression restoring force.
The sheet-like material in a state where the punched piece and the punched sheet-like material are integrated is pulled away from the punching device.
Thereafter, the punched scraps are separated from the sheet-like material to obtain a product having a desired shape.

By the way, if the size of the punched shape becomes small, it becomes difficult to select the pusher.
For example, when the punched shape is slit-shaped, the elastic body becomes more exhausted as the width of the slit becomes smaller.
In general, when the width of the slit is about 3 mm or less, the size of the elastic body provided in the gap between the punching punches becomes small, and the elastic force of the pusher is insufficient.
For example, when a punched blade having a thickness of 0.7 mm is used to punch a slit-shaped punching shape having a width of 2.2 mm, the clearance between the punching blades is 1.5 mm. in this case. The thickness of the pusher is 1 mm.
When the elastic body is consumed, the elastic force is reduced.
When the elastic force becomes small, it becomes difficult to extrude the punched punched piece.
If the punched piece cannot be pushed out, it remains in the gap between the punched piece punching blades, and continuous sheet-like material cannot be punched.
For example, punching a slit-shaped punch having a width dimension of 1 mm is not practical in terms of work efficiency, and the design has to be changed.

JP-A-10-217195

  The present invention has been devised in view of the above-described problems, and intends to provide an extrusion tool that is easy to handle with a simple configuration and a punching die using the extrusion tool.

  In order to achieve the above object, an extrusion tool for extruding a punched piece in a gap between a pair of punching blades for punching a sheet-like material according to the present invention into a predetermined punching shape has a predetermined thickness and a predetermined height. A first plate member that is a plate material that has, an elastic body, and a second plate member that is a plate material having a predetermined thickness and a predetermined height, the first plate member and the second plate member However, it is assumed that the elastic body is sandwiched in the height direction so as to form a belt shape having a constant height as a whole, and the edge portion of the first plate member that does not contact the elastic body hits the punched piece.

  According to the configuration of the present invention, the first plate member is a plate material having a predetermined thickness and a predetermined height, and the second plate member is a plate material having a predetermined thickness and a predetermined height, The plate member and the second plate member are sandwiched in the height direction with the elastic body in between to form a strip shape having a constant height as a whole, and the edge portion of the first plate member that does not contact the elastic body is Since it hits the punched piece, it is possible to suppress wear of the pushing tool and to suppress a decrease in force for pushing the punched piece.

  In order to achieve the above object, an extrusion tool for extruding a punched piece in a gap between a pair of punching blades for punching a sheet-like material according to the present invention into a predetermined punching shape has a predetermined thickness and a predetermined height. A first plate member, which is a plate member, and an elastic body, and the first plate member and the elastic body overlap in the height direction to form a belt having a constant height as a whole. The edge part which does not contact the said elastic body shall hit the punching piece.

  According to the configuration of the present invention, the first plate member is a plate material having a predetermined thickness and a predetermined height, and the first plate member and the elastic body overlap each other in the height direction to have a constant height as a whole. Since the edge portion of the first plate member that is not in contact with the elastic body hits the punched piece, it is possible to suppress wear of the pushing tool and to suppress a decrease in force for pushing the punched piece.

  In the following, several embodiments of the present invention will be described. The present invention includes a mode in which any of the embodiments described below or two or more of them are combined.

The pusher according to the embodiment of the present invention is an elastic plate material in which the elastic body has a thickness substantially equal to the thickness of the first plate member and a predetermined height.
With the configuration of the above embodiment, the elastic plate material having a thickness substantially equal to the thickness of the first plate member and a predetermined height presses the first plate member, so the elastic plate material presses the punched piece. It can generate force.

The pusher according to the embodiment of the present invention is a spring plate in which the elastic body has a width substantially the same as the thickness of the first plate member and is bent in a wave shape in the height direction.
According to the configuration of the above embodiment, the spring plate bent in a wave shape in the height direction having a width substantially the same dimension as the thickness of the first plate member presses the first plate member, so that the spring plate bent in the wave shape is a punched piece. The force which pushes out can be generated.

  In order to achieve the above object, a punching die for punching a sheet-shaped material according to the present invention into a predetermined punching shape having a pair of sides arranged in parallel, a mold base plate which is a base member having a predetermined thickness, A strip-shaped metal first punching blade having a predetermined thickness and a predetermined height and a blade on one edge, and a band-shaped metal having a predetermined thickness and a predetermined height and a blade on one edge A second punching blade, a first plate member that is a plate member having a predetermined thickness and a predetermined height, an elastic body, and a second plate member that is a plate member having a predetermined thickness and a predetermined height. The first plate member and the second plate member have a belt-like pusher that overlaps in the height direction with the elastic body interposed therebetween and has a constant height as a whole, and The die base plate is embedded in a position corresponding to the position of one side of the punch shape of the die base plate. The blade edge is exposed from one surface, the second punching blade is embedded in a position corresponding to the position of the other side of the punched shape of the mold base plate, the blade edge is exposed from one surface of the mold base plate, and the extrusion The tool is sandwiched between the first punching blade and the second punching blade, and the edge portion of the first plate member that does not contact the elastic body is exposed on one surface of the mold base plate.

According to the configuration of the present invention, the mold base plate is a base member having a predetermined thickness, and the first punching blade is made of a band-shaped metal having a predetermined thickness and a predetermined height and having a blade on one edge. Yes, the second punching blade is made of a band-shaped metal having a predetermined thickness and a predetermined height and a blade on one edge, and the first plate member is a plate material having a predetermined thickness and a predetermined height. Yes, the second plate member is a plate material having a predetermined thickness and a predetermined height, and the first plate member and the second plate member overlap with each other in the height direction with the elastic body in between. The first punching blade is embedded in a position corresponding to the position of one side of the punching shape of the mold base plate, and the cutting edge is moved from one surface of the mold base plate. The second punching blade is exposed and buried in a position corresponding to the position of the other side of the punched shape of the mold base plate. Rarely, a cutting edge is exposed from one surface of the mold base plate, the pusher is sandwiched between the first punching blade and the second punching blade, and an edge portion of the first plate member that does not contact the elastic body is provided. Since it is exposed on one surface of the mold base plate, the first plate member extrudes a punched piece between the first punching blade and the second punching blade,
The consumption of the pushing tool can be suppressed, and the reduction of the pushing force can be suppressed.

  In order to achieve the above object, a punching die for punching a sheet-shaped material according to the present invention into a predetermined punching shape having a pair of sides arranged in parallel, a mold base plate which is a base member having a predetermined thickness, A strip-shaped metal first punching blade having a predetermined thickness and a predetermined height and a blade on one edge, and a band-shaped metal having a predetermined thickness and a predetermined height and a blade on one edge A first punching blade, a first plate member having a predetermined thickness and a predetermined height, and an elastic body, wherein the first plate member and the elastic body overlap in the height direction. An extruding tool having a belt shape having a constant height as a whole, and the first punching blade is embedded at a position corresponding to the position of one side of the punching shape of the mold base plate. The cutting edge is exposed from one surface, and the second punching blade is positioned on the other side of the die shape of the mold base plate. The blade is exposed from one surface of the mold base plate, the pusher is sandwiched between the first punching blade and the second punching blade, and the elastic body of the first plate member The edge part which does not touch is exposed on one surface of the mold base plate.

  According to the configuration of the present invention, the mold base plate is a base member having a predetermined thickness, and the first punching blade is made of a band-shaped metal having a predetermined thickness and a predetermined height and having a blade on one edge. Yes, the second punching blade is made of a band-shaped metal having a predetermined thickness and a predetermined height and a blade on one edge, and the first plate member is a plate material having a predetermined thickness and a predetermined height. Yes, the first plate member and the elastic body overlap in the height direction to form a belt-like pusher having a constant height as a whole, and the first punching blade is one side of the punched shape of the mold base plate Embedded in a position corresponding to the position of the mold base plate, the cutting edge is exposed from one surface of the mold base plate, and the second punching blade is embedded in a position corresponding to the position of the other side of the punch shape of the mold base plate The cutting edge is exposed from one surface of the base plate, and the pusher is the first punching blade Since the edge of the first plate member that is sandwiched between the second punching blades and not in contact with the elastic body is exposed on one surface of the mold base plate, the first plate member is connected to the first punching blade and the second punching blade. The punching piece between the punching blades can be pushed out, consumption of the pushing tool can be suppressed, and reduction in the pushing force can be suppressed.

  In the following, several embodiments of the present invention will be described. The present invention includes a mode in which any of the embodiments described below or two or more of them are combined.

The punching die according to the embodiment of the present invention is an elastic plate material in which the elastic body has a thickness substantially equal to the thickness of the first plate member and a predetermined height.
With the configuration of the above embodiment, since the elastic body is an elastic plate material having a thickness substantially the same as the thickness of the first plate member and a predetermined height, the elastic plate material pushes out the punched piece. Can generate power.

The punching die according to the embodiment of the present invention is a spring plate in which the elastic body has a width substantially the same as the thickness of the first plate member and is bent in a wave shape in the height direction.
According to the configuration of the above embodiment, the elastic body is a spring plate having a width approximately the same as the thickness of the first plate member and bent in a wave shape in the height direction. A pushing force can be generated.

As described above, the extrusion tool for extruding the punched piece in the gap between the pair of punching blades for forming the punching shape in the sheet-like material according to the present invention and the punching die using the same are as follows. It has the effect of.
The first plate member and the second plate member are sandwiched between a pair of punching blades, with an extruding tool formed into a band shape having a constant height by sandwiching an elastic body in the height direction. Since the edge of the plate member that is not in contact with the elastic body is embedded in the mold base plate so as to hit the punched piece between the pair of punching blades, it is possible to suppress the consumption of the pusher and to suppress the reduction of the pushing force.
An edge of the first plate member that does not come into contact with the elastic body by sandwiching an extruding tool having a belt shape of a certain height by overlapping the first plate member and the elastic body in a height direction between a pair of punching blades Since the portion is inserted into the mold base plate so as to hit the punched piece between the pair of punching blades, it is possible to suppress the consumption of the pushing tool and to suppress the reduction of the pushing force.
In addition, since the elastic body is an elastic plate material having a thickness substantially equal to the thickness of the first plate member and a predetermined height, the elastic plate material generates a force for pushing out the punched piece. Can do.
Further, since the elastic body is a spring plate having a width substantially the same as the thickness of the first plate member and bent in a wave shape in the height direction, the spring plate bent in the wave shape has a force for pushing out the punched piece. Can be generated.
Therefore, it is possible to provide an extrusion tool that is easy to handle with a simple configuration and a punching die using the extrusion tool.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

Initially, the extrusion tool which concerns on 1st embodiment of this invention and the punching die using the extrusion tool are demonstrated based on a figure.
FIG. 1 is a plan view of a punching die according to the first embodiment of the present invention. FIG. 2 is an AA cross-sectional view of the punching die according to the first embodiment of the present invention. FIG. 3 is a BB cross-sectional view of the punching die according to the first embodiment of the present invention. FIG. 4 is a perspective view of the pusher according to the embodiment of the present invention.

The punching die is a die for punching a sheet-like material into a predetermined punching die, and includes a die base plate 30, a first punching blade 21, a second punching blade 22, a third punching blade 23, and a fourth punching blade 24. The pusher 10 and the elastic body 40 for extrusion are comprised.
The die has a pair of parallel sides.
Hereinafter, for the sake of convenience of explanation, a case where the predetermined punching shape has a slit shape will be described as an example.

The mold foundation plate 30 is a foundation member having a predetermined thickness.
For example, the mold base plate is a wooden laminated plate material having a predetermined thickness.
For example, a narrow rectangular embedded groove 31 is provided in the mold base plate 30. The embedded groove 31 is a through-hole having a cross section surrounded by a pair of long sides facing each other and a pair of short sides facing each other and penetrating the mold base plate 30. A pair of long sides corresponds to a pair of sides.
A first punching blade 21, a second punching blade 22, a third punching blade 23, a fourth punching blade 24, and the pusher 10 described later are embedded in the embedded groove.

The first punching blade 21 is a strip-shaped metal member having a predetermined thickness and a predetermined height and having a blade on one edge.
The first punching blade 21 is embedded at a position corresponding to the position of one side of the punched shape of the mold base plate 30, and the cutting edge is exposed from one surface of the mold base plate 30.
For example, the first punching blade 21 is a band-shaped metal plate having a certain thickness and having a cutting edge on one edge. The first punching blade 21 is embedded along one long side of the embedded groove 31 provided in the mold base plate 30.

The second punching blade 22 is a strip-shaped metal member having a predetermined thickness and a predetermined height and having a blade on one edge.
The second punching blade 22 is embedded at a position corresponding to the position of the other side of the punched shape of the mold base plate 30, and the cutting edge is exposed from one surface of the mold base plate 30.
For example, the second punching blade 22 is a band-shaped metal plate having a certain thickness and having a blade edge on one edge. The second punching blade 22 is embedded along the other long side of the embedded groove 31 provided in the mold base plate 30.

The third punching blade 23 is a strip-shaped metal member having a predetermined thickness and a predetermined height and having a blade on one edge.
The third punching blade 23 is embedded at a position corresponding to the position connecting the end of the punched first punching blade 21 and the end of the second punching blade 22, and the cutting edge is exposed from one surface of the mold base plate. To do.
For example, the third punching blade 23 is a band-shaped metal plate having a certain thickness and having a blade edge on one edge. The third punching blade 23 is embedded along one short side of the embedded groove provided in the mold base plate 30.

The fourth punching blade 24 is a strip-shaped metal member having a predetermined thickness and a predetermined height and having a blade on one edge.
The fourth punching blade 24 is embedded at a position corresponding to a position connecting the other end of the punched first punching blade 21 and the other end of the second punching blade 22, and is provided on one side of the mold base plate. Expose the cutting edge from the surface.
For example, the fourth punching blade 24 is a band-shaped metal plate having a certain thickness and having a cutting edge on one edge. The fourth punching blade 24 is embedded along the other short side of the embedding groove provided in the mold base plate 30.

The pushing tool 10 is an instrument for pushing out a punched piece in a gap between a pair of punching blades for punching the sheet-like material 70 into a predetermined punching shape, and is elastic with the first plate member 11 and the second plate member 12. It is composed of a body 13. The pair of punching blades may be arranged in parallel.
The first plate member 11 is a plate material having a predetermined thickness and a predetermined height.
The second plate member 12 is a plate material having a predetermined thickness and a predetermined height.
The first plate member 11 and the second plate member 12 overlap with each other in the height direction with the elastic body 13 interposed therebetween to form a band shape having a constant height as a whole, and contact the elastic body 13 of the first plate member 11. It is provided on the mold base plate so that the edge portion that does not hit the punched piece.
The thickness of the first plate member 11 and the thickness of the second plate member 12 may be substantially the same.
For example, the first plate member 11 is a strip-shaped metal plate having a certain width dimension and a certain thickness dimension. The second plate member 12 is a metal plate having a constant width dimension and the same thickness as the thickness of the first metal plate 11.

The elastic body 13 is a member that is elastic at least in the height direction.
For example, the elastic body 13 is an elastic plate material having the same thickness as the thickness of the first plate member 11.
The plate material may be a resin plate material.
For example, the elastic body 13 is a rubber plate having a certain width dimension and the same thickness as the thickness of the first metal plate.
The elastic body 13 may be bonded to the first plate member 11 and the second plate member 12.
The first plate member 11 and the second plate member 12 are overlapped in the width direction with the elastic body 13 interposed therebetween, and have a belt shape with a predetermined width.
The width dimension of the pushing tool 10 may be substantially the same as the width dimension of the first punching blade 21 and the second punching blade 22.
FIG. 4 shows the pusher 10 in which the first plate member 11, the elastic body 13, and the second plate member 12 are overlapped in the width direction.
Usually, a desired length is cut out from a long push tool to obtain a push tool.

The extruding elastic body 40 is an elastic body that pushes out the punched sheet-shaped material in the vicinity of the punching blade for punching the sheet-shaped material into a predetermined punching shape.
For example, the extruding elastic body 40 is a block-shaped rubber plate material placed on a mold base plate along the blade of the punching blade.
The height of the elastic body 40 for extrusion is slightly higher than the height of the blade girder.

Next, a punching die according to a second embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is an AA cross-sectional view of a punching die according to the second embodiment of the present invention. FIG. 6 is a BB cross-sectional view of the punching die according to the second embodiment of the present invention.
Hereinafter, for convenience of explanation, a case where the predetermined punching shape is an example having a slit shape will be described as an example.

The punching die is a die for punching a sheet-like material into a predetermined punching die, and includes a die base plate 30, a first punching blade 21, a second punching blade 22, a third punching blade 23, and a fourth punching blade 24. The pusher 10 and the elastic body 40 for extrusion are comprised.
The structure of the die base plate 30, the first punching blade 21, the second punching blade 22, the third punching blade 23, the fourth punching blade 24, and the elastic body 40 for extrusion is that of the punching die according to the first embodiment. The description is omitted because it is the same.

The pushing tool 10 is an instrument for pushing out a punched piece in a gap between a pair of punching blades for punching a sheet-like material into a predetermined punching shape, and includes a first plate member 11 and an elastic body 13. .
The pair of punching blades may be arranged in parallel.
The first plate member 11 is a plate material having a predetermined thickness and a predetermined height.
The first plate member 11 and the elastic body 13 are overlapped in the height direction to form a belt having a constant height as a whole, and the edge of the first plate member 11 that does not contact the elastic body 13 hits the punched piece.
For example, the first plate member 11 is a strip-shaped metal plate having a certain width dimension and a certain thickness dimension.

The elastic body 13 is an elastic resin plate having a thickness substantially equal to the thickness of the first plate member 11 and a predetermined height.
For example, the elastic body is a rubber plate having a constant width dimension and the same thickness as the thickness of the first metal plate.
The first plate member 11 and the elastic body 13 are overlapped in the width direction to form a band with a predetermined width.
The width dimension of the pushing tool 10 is substantially the same as the width dimension of the first punching blade 21.

Next, a punching die according to a third embodiment of the present invention will be described with reference to the drawings.
FIG. 7 is a BB cross-sectional view of a punching die according to the third embodiment of the present invention.
Hereinafter, for convenience of explanation, a case where the predetermined punching shape is an example having a slit shape will be described as an example.

The punching die is a die for punching a sheet-like material into a predetermined punching die, and includes a die base plate 30, a first punching blade 21, a second punching blade 22, a third punching blade 23, and a fourth punching blade 24. The pusher 10 and the elastic body 40 for extrusion are comprised.
The structure of the die base plate 30, the first punching blade 21, the second punching blade 22, the third punching blade 23, the fourth punching blade 24, and the elastic body 40 for extrusion is that of the punching die according to the first embodiment. The description is omitted because it is the same.

The pushing tool 10 is an instrument for pushing out punched pieces in a gap between a pair of punching blades for punching a sheet-like material into a predetermined punching shape, and includes a first plate member 11, a second plate member 12, and an elastic body. 13.
The first plate member 11 and the second plate member 12 overlap with each other in the height direction with the elastic body 13 interposed therebetween to form a band shape having a constant height as a whole, and contact the elastic body 13 of the first plate member 11. The edge that does not hit the punched piece.
For example, the first plate member 11 is a strip-shaped metal plate having a certain width dimension and a certain thickness dimension. The second plate member 12 is a metal plate having a constant width dimension and the same thickness as the thickness of the first plate member 11.
The thickness of the first plate member 11 and the thickness of the second plate member 12 may be substantially the same.

The elastic body 14 is a spring plate that has a width substantially the same as the thickness of the first plate member 11 and is bent in a wave shape in the height direction.
For example, the elastic body 14 is a metal spring plate bent repeatedly in a wave shape.
One place on the upper surface of the spring plate may be bonded to the first plate member 11.
One place on the lower surface of the spring plate may be bonded to the second plate member 12.

Next, the operation of the punching die according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 8 is an operation explanatory view of the punching die according to the first embodiment of the present invention.

(A)
The sheet-like material 70 is placed between the mold holder 50 and the pusher 60.
The pushing tool 60 is pressed against the punching die.
The sheet-like material 70 hits the elastic body 40 for extrusion.
The extruding elastic body 40 is crushed.

(B)
Further, the pushing tool 60 is pressed against the punching die.
The cutting edge of the punching blade 20 bites into the sheet material 70.
The extrusion elastic body 40 is compressed.
The elastic body 13 is compressed, and the end surface of the first plate member 11 of the pusher 10 is retracted.
A punching die corresponding to the blades of the first punching blade 11 and the second punching blade 22 can be formed on the sheet material 70.
A punching piece 71 remains between the first punching blade 11 and the second punching blade 22.

(C)
The pusher 60 is pulled away from the mold holder 50.
The elastic body 40 for extrusion returns.
The pusher 10 returns to its original position.
The punching piece 71 is pushed out from between the first punching blade 21 and the second punching blade 22. The sheet-like member 72 and the punched piece 71 can be separated.

Next, an application example of the punching die according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 9 is a conceptual diagram of an application example of the present invention.
FIG. 10 is a plan view of a sheet-like material according to an application example of the present invention.
The sheet-like material is punched out to produce a sheet-like material having a slit-like hole 73 in a part and a quadrilateral outline.
A punching blade 25 for outer shape punching is embedded in the mold base plate 30 along the outline of the quadrilateral.
The punching die according to the first embodiment of the present invention is arranged inside a punching blade for external punching.
A sheet-like material is inserted between the extrusion die and the pushing tool, and the pushing tool is pressed against the mold holder.
When the pushing tool is separated from the mold holder, the sheet-like material punched into the punching die shown in FIG. 10 is controlled.
The punched piece pushed out by the pusher according to the embodiment of the present invention becomes waste.

If the extrusion tool of the above-mentioned embodiment and the punching die using the extrusion tool are used, the following effects are exhibited.
The first plate member, the elastic body, and the second plate member are overlapped in the height direction and placed between a pair of punching blades arranged in parallel, and a sheet-like material is placed between the pair of punching blades. Since it presses against a blade edge | tip, a pair of punching blades will punch a sheet-like material, and an extrusion tool will push out the punching piece which remained between a pair of punching blades. Since the first plate member hits the punched piece, wear of the pusher can be suppressed.
Further, the first plate member and the elastic body are overlapped in the height direction and placed between a pair of punching blades arranged in parallel, and the sheet-like material is pressed against the cutting edge of the pair of punching blades. Therefore, the pair of punching blades punches the sheet-like material, and the pushing tool pushes out the punched pieces remaining between the pair of punching blades. Since the first plate member hits the punched piece, wear of the pusher can be suppressed.
Further, since the rubber plate is an elastic body, the punched pieces remaining between the pair of punching blades are pushed out by the elastic force of the rubber plate. Moreover, the pushing force of the pushing tool can be adjusted by selecting the height of the rubber plate.
Further, since the spring plate bent in a wave shape in the height direction is used as the elastic body, the punched piece remaining between the pair of punching blades is pushed out by the elastic force of the spring plate. Moreover, the pushing force of the pushing tool can be adjusted by selecting the dimensions of the spring plate.
In addition, since a long extrusion tool is prepared and cut and used in accordance with the size of the punching die, the punching die can be easily manufactured according to the shape and size of the punching die.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
Although an example in which one pushing tool is sandwiched between a pair of punching blades has been described, the present invention is not limited to this. For example, a plurality of pushing tools may be sandwiched between a pair of punching blades.
Although the first plate member and the second plate member are metal plates, the present invention is not limited to this. For example, a resin plate may be used.
Although the case where the slit is linear has been described as an example, the present invention is not limited thereto, and the slit may be curved.
Although the case where the punching die has a slit shape has been described as an example, the present invention is not limited to this, and for example, a complicated shape such as a snow mark may be used.
In the application example, the case where the punched piece is punched waste has been described as an example, but the present invention is not limited thereto. For example, the punched piece may be a target product.

It is a top view of the punching die concerning a first embodiment of the present invention. It is AA sectional drawing of the punching die which concerns on 1st embodiment of this invention. It is BB sectional drawing of the punching die which concerns on 1st embodiment of this invention. It is a perspective view of the extrusion tool which concerns on 1st embodiment of this invention. It is AA sectional drawing of the punching die which concerns on 2nd embodiment of this invention. It is BB sectional drawing of the punching die which concerns on 2nd embodiment of this invention. It is BB sectional drawing of the punching die which concerns on 3rd embodiment of this invention. It is action | operation explanatory drawing of the punching die which concerns on 1st embodiment of this invention. It is a conceptual diagram of the example of application of this invention. It is a top view of the sheet-like material of the application example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Extrusion tool 11 1st board member 12 2nd board member 13 Elastic body 14 Elastic body 20 Punching blade 21 1st punching blade 22 2nd punching blade 23 3rd punching blade 24 4th punching blade 25 Die-cutting blade 30 Type | mold foundation Plate 31 Embedded groove 40 Extruding elastic body 50 Mold holder 60 Pushing tool 70 Sheet-like material 71 Punching edge 72 Sheet-like material 73 Punching hole

Claims (8)

An extrusion tool for extruding a punched piece in a gap between a pair of punching blades for punching a sheet-like material into a predetermined punching shape,
A first plate member which is a plate material having a predetermined thickness and a predetermined height;
An elastic body,
A second plate member that is a plate material having a predetermined thickness and a predetermined height;
With
The first plate member and the second plate member overlap with each other in the height direction with the elastic body in between, forming a strip shape having a constant height as a whole, and do not contact the elastic body of the first plate member. The edge hits the punched piece,
Extruder characterized by that. An extrusion tool for extruding a punched piece in a gap between a pair of punching blades for punching a sheet-like material into a predetermined punching shape,
A first plate member which is a plate material having a predetermined thickness and a predetermined height;
An elastic body,
With
The first plate member and the elastic body overlap in the height direction to form a belt having a constant height as a whole, and the edge of the first plate member that does not contact the elastic body hits the punched piece,
Extruder characterized by that. The elastic body is an elastic plate material having a thickness substantially equal to the thickness of the first plate member and a predetermined height.
3. The pushing tool according to claim 1, wherein the pushing tool is provided. The elastic body is a spring plate that has a width substantially the same as the thickness of the first plate member and is bent in a wave shape in the height direction.
3. The pushing tool according to claim 1, wherein the pushing tool is provided. A punching die for punching a sheet material into a predetermined punching shape having a pair of sides arranged in parallel,
A mold base plate which is a base member having a predetermined thickness;
A strip-shaped metal first punching blade having a predetermined thickness and a predetermined height and having a blade on one edge;
A band-shaped metal second punching blade having a predetermined thickness and a predetermined height and having a blade on one edge;
A first plate member that is a plate member having a predetermined thickness and a predetermined height; an elastic body; and a second plate member that is a plate member having a predetermined thickness and a predetermined height. An extruding tool having a belt-like shape having a certain height as a whole by overlapping the elastic body between the second plate member in the height direction;
With
The first punching blade is embedded at a position corresponding to the position of one side of the punching shape of the mold base plate, and the blade edge is exposed from one surface of the mold base plate;
A second punching blade is embedded in a position corresponding to the position of the other side of the punched shape of the mold base plate, and the blade edge is exposed from one surface of the mold base plate;
The pushing tool is sandwiched between the first punching blade and the second punching blade, and an edge portion of the first plate member not contacting the elastic body is exposed on one surface of the mold base plate;
Punching die characterized by that. A punching die for punching a sheet material into a predetermined punching shape having a pair of sides arranged in parallel,
A mold base plate which is a base member having a predetermined thickness;
A strip-shaped metal first punching blade having a predetermined thickness and a predetermined height and having a blade on one edge;
A strip-shaped metal first punching blade having a predetermined thickness and a predetermined height and having a blade on one edge;
It has a first plate member and an elastic body, which are plates having a predetermined thickness and a predetermined height, and the first plate member and the elastic body overlap each other in the height direction to have a constant height as a whole. An extruding tool in the form of a strip,
With
The first punching blade is embedded at a position corresponding to the position of one side of the punching shape of the mold base plate, and the blade edge is exposed from one surface of the mold base plate;
A second punching blade is embedded in a position corresponding to the position of the other side of the punched shape of the mold base plate, and the blade edge is exposed from one surface of the mold base plate;
The pushing tool is sandwiched between the first punching blade and the second punching blade, and an edge portion of the first plate member not contacting the elastic body is exposed on one surface of the mold base plate;
Punching die characterized by that. The elastic body is an elastic plate material having a thickness substantially equal to the thickness of the first plate member and a predetermined height.
The punching die according to any one of claims 5 and 6, wherein the die is a punching die. The elastic body is a spring plate that has a width substantially the same as the thickness of the first plate member and is bent in a wave shape in the height direction.
The punching die according to any one of claims 5 and 6, wherein the die is a punching die.

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