JP2013226646A - Cutting die apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology for improving the punched surface of an object by heating a punching blade.SOLUTION: A cutting die is provided for punching a punching object arranged between upper and lower surface plates 91, 92 by a punching die 1A provided on at least one of the upper and lower surface plates 91, 92. The punching die 1A is provided with a heater 13 for heating the punching blade 12. The heater 13 may be constituted using an electric heating wire, an infrared heater or the like. A direct current or a proper frequency alternating current of about 10-110 V, for example, is used for the electric heating wire.

Description

  The present invention relates to a punching die with a heater used for punching a punching object disposed between upper and lower surface plates, a punching die temperature control system using this punching die, and a punching blade (and thus a cutting edge of the punching blade). ) To improve the punching surface of the object.

  Conventionally, cracking may occur when an object such as acrylic is punched out using a punching die. In order to eliminate this inconvenience, the surface plate to which the punching die is attached is heated by a heater, and the punching die itself (the base of the cutting blade) mounted on the punching die indirectly is set at, for example, 70 ° C. May be heated to about 100 ° C.

  However, with this punching technology, the heat transfer efficiency from the surface plate to the punching die itself (the base of the machined blade) is not only bad, but the surface plate itself with a large heat storage capacity is heated. Heating itself requires a large amount of power, and the heat dissipation of the surface plate is extremely large, so a large amount of power is also required to maintain the temperature of the surface plate.

Further, when used in a work environment in which the temperature is adjusted, the air conditioner must be driven in order to prevent the temperature of the work environment from increasing, so that a larger amount of power is required.
Moreover, conventionally, it has been impossible in practice to heat the band-shaped blade (Thomson blade).

  An object of the present invention is to enable a beautiful punching of an object by heating a punching blade.

The gist of the present invention is (1) to (10).
(1)
A punching die provided in at least one of the upper and lower surface plates, punching an object to be punched between upper and lower surface plates with a punching blade,
The punching die is provided with a heater for heating the punching blade.
The punching blade is a machined blade, a strip-shaped blade or a combination thereof.
When the punching blade is a cutting blade, the punching die basically includes a metal base and a cutting blade. Moreover, it can comprise from the metal base and the jig | tool (it consists of a plywood, a synthetic resin, a metal, etc.) in which the said cutting blade is accommodated.
If the punching blade is a strip blade (Thomson blade), the punching die and a jig on which the strip blade is set (a plywood, a synthetic resin, a metal with a slit into which the strip blade is inserted are formed) Etc.).
When a punching die is provided on either the upper surface plate or the lower surface plate, a receiving surface whose surface coincides with the blade edge is formed on the other surface plate so as to face the blade edge, and a receiving member can be provided. . This receiving member is indispensable particularly when the cutting edge of the punching blade is not on one plane (when it is on two or more planes, on a curved surface, or on a combination surface thereof). .
Further, when the upper surface plate and the lower surface plate are each provided with a punching die, the two cutting edges can be formed so as to coincide with each other at the time of punching.
The heater may be a self-heating element such as a heating wire or a heat medium flow path, or may be a non-self-heating element such as an electromagnetic induction coil.
In the present invention, the heating temperature can be appropriately set depending on the material and thickness of the punched object (the present invention is not limited to the heating temperature, but can be in the range of 70 ° C. to 100 ° C., for example). .
(2)
The punching die according to (1), wherein the punching blade is a cutting blade, and the heater is provided almost directly below the punching blade along a planar view shape of the punching blade.
In the present invention, the entire punching die can be heated, but when the entire punching die is heated, the punching target is also heated by heating the punching die, and as a result, the quality of the punching target may be lowered. According to the aspect of (2), since only the vicinity of a blade edge is heated, it can avoid that a punching target object is heated.
(3)
The punching die according to (1), wherein the punching blade is a belt-like blade, and the heater is provided in contact with the belt-like blade along a planar view shape of the belt-like blade.
(4)
(1) or (2), wherein the punching blade is a cutting blade, and a heat insulating material is adhered or applied to all or a part of the portion where the cutting blade is not formed. Punching mold.
In this aspect, since the punching blade can prevent heat dissipation, the efficiency is improved. For example, only the vicinity of the punching blade can be heated by sticking or applying to a heat insulating material on a portion where the blade of the punching blade is not formed. it can.
(5)
The die according to any one of (1) to (4), wherein the heater is a heating wire heater or a Peltier element heater.
The heating wire heating body or the Peltier element heating body is usually provided so that heat is directly transmitted to a cutting blade (or a base of the cutting blade) or a belt-like blade.
(6)
The punching die according to any one of (2) to (4), wherein the heater is a flow path (tube or cut flow path) through which a heat medium (liquid or gas) flows.
The flow path is also usually provided so that heat is directly transmitted to the cutting blade (or the base of the cutting blade) or the band-shaped blade.
In this aspect, the heat medium is heated in the heat medium heating device and flows through the flow path. The heating medium heating device may be installed outside the punching die or may be mounted on the punching die.
(7)
A temperature control system using the punching die according to any one of (1) to (5),
The punching die temperature control system, wherein the punching die is provided with a temperature sensor for detecting the temperature of the punching blade, and the amount of heat supplied to the heater is controlled based on a signal from the temperature sensor.
The temperature sensor is usually provided so as to be in contact with the base of the cutting blade or the belt-like blade.
The punching temperature control system typically drives a temperature sensor, a control circuit (including a CPU, a ROM, etc.) that receives a detection signal from the temperature sensor and performs feedback control, a switch circuit, and the switch circuit. Drive circuit.
(8)
A temperature control system using the punching die according to (6),
A die temperature control system, wherein a temperature sensor is provided at any location of the flow path, and the temperature of the heat medium supplied to the heater is controlled based on a signal from the temperature sensor.
A punching die characterized in that is provided.
(9)
A punching die device for punching an object to be punched between upper and lower surface plates with a punching blade provided on at least one of the upper and lower surface plates,
A moving device for moving the punching die from the installation position of the surface plate to a heating chamber outside the upper and lower surface plates;
While the upper surface plate is separated from the punching die, at least the cutting edge portion of the punching die is heated in the heating chamber.
(10)
A punching die device for punching an object to be punched between upper and lower surface plates with a punching blade provided on at least one of the upper and lower surface plates,
A movable heater for non-contact heating of at least the punching blade of the punching die;
An operation device for moving the movable heater to the outside of the upper and lower surface plates and the cutting edge portion of the punching blade;
While the upper surface plate is separated from the punching die, at least the cutting edge portion of the punching die is heated.

  In the punching die of the present invention, since the cutting edge of the punching blade is heated by the heater, the object can be punched cleanly. Moreover, in the punching die of the present invention, since the surface plate is not heated, the power used for heating can be kept low.

  In the punching die of the present invention, when the punching blade is a machined blade, the heat capacity of the base is large, so that a stable temperature can be provided to the punching blade.

  Furthermore, in the punching die temperature control system of the present invention, the punching blade can always be kept at an appropriate temperature, and the punching blade can be set at an appropriate temperature according to the punching object.

It is explanatory drawing of 1st Embodiment of this invention, (A) is a perspective view which shows a punching die, (B) is a figure which shows the example which set the heat insulating material to the bottom face of the punching die. It is a figure which shows the upper and lower surface plate which provided the cutting die with the lower surface plate. It is a figure which shows embodiment of the temperature control system for punching die which provided the temperature sensor in the punching die. (A) is a figure which shows the example which attached the punching die to the upper surface plate, (B) is a figure which shows the example which fixed the magnet to the groove | channel formed in the bottom face of the punching die. It is a figure which shows the example of a design change of the punching die of 1st Embodiment, (A) is an exploded perspective view which shows the upper base part of the punching die which provided the heater of the heating wire, (B) looked at the upper base from the downward direction It is a perspective view. It is a perspective view which shows the punching die of 2nd Embodiment. It is a figure which shows a receiving member, (A) is a side view, (B) is the top view seen from the side with a receiving surface. It is a figure which shows a mode that the cutting die of FIG. 6 was attached to the lower surface plate, and the receiving member was attached to the upper surface plate. It is a perspective view of the die set which shows 3rd Embodiment of this invention. It is a figure which shows the example which attached the 1st punching die and the 2nd punching die to the upper and lower surface plate, (A) is a figure which shows the mode before punching, (B) is a figure which shows the example after punching. . It is explanatory drawing of 4th Embodiment of this invention, and is a figure which shows the punching die heated with a heating tube. It is explanatory drawing in 4th Embodiment, (A) is a top view of the cutting die of FIG. 11, (B) is a side view similarly. It is explanatory drawing of 4th Embodiment, and is a figure which shows the example which formed the groove | channel in the bottom face of the lower base part, and set the heat insulating material in this groove | channel. It is a figure which shows the heating apparatus in 4th Embodiment, (A) is a top view, (B) is a left view. It is the figure which removed the fan from the heating apparatus of FIG. 14, (A) is a top view, (B) It is a left view. It is a figure which shows the example which installed the cutting die of 4th Embodiment in the lower surface plate. It is a figure which shows the example which attached the heating apparatus directly to the cutting die, (A) is a top view, (B) is a left view. It is explanatory drawing of 5th Embodiment of this invention, (A) is a disassembled perspective view which shows the cutting die which has a heating tube along the shape of a blade, (B) is the perspective view which looked at the upper base from the downward direction. . It is a perspective view which shows the state which assembled each component of the exploded perspective view shown in FIG. 18A is a perspective view showing an example in which a heat insulating paint is applied to the lower portion of the heating tube shown in FIGS. 18A and 19, and FIG. 18B is a punching die shown in FIGS. 18A and 19. The perspective view which shows the example which apply | coated the heat insulating coating material to the whole surface except the punching blade of FIG. 18, (C) shows the example which removed the base part of the punching die shown in FIG. 18 (A) and FIG. 19 leaving the part of the punching blade. It is a perspective view. It is explanatory drawing of 6th Embodiment of this invention, (A) is a disassembled perspective view which shows the punching blade by a Thomson blade, (B) is the perspective view which looked at the upper base from the downward direction. It is a perspective view which shows the assembly state of each component of FIG. It is a figure which shows the heating apparatus in 7th Embodiment of this invention, (A) is a side view which shows the cutting die with which the coil for high frequency induction heating was mounted, (B) is a top view similarly. It is a figure which shows the heating apparatus in 8th Embodiment of this invention, (A) is a side view which shows the cutting die with which the coil for high frequency induction heating was mounted, (B) is a top view similarly. It is a reference view of the present invention showing an example in which a heater is provided in addition to the punching die, (A) is a side view of a punching system equipped with a heater housing device, and (B) is an exploded view of the heater housing device. It is explanatory drawing of the punching apparatus of this invention which moves a punching die to a heating chamber with a rail, (A) is a side view of a punching apparatus, (B) is a top view, (C) is also a front view. It is explanatory drawing of the punching apparatus of this invention which moves a punching die to a heating chamber with an operation arm. It is explanatory drawing of the cutting die movement in the punching die apparatus of FIG. It is explanatory drawing of the punching apparatus of this invention which moves an infrared heater to the cutting-edge part of a punching die with an operation arm, and heats it. It is explanatory drawing of the cutting die movement in the punching die apparatus of FIG.

  A first embodiment of the present invention will be described. FIG. 1A is a perspective view showing a die 1A equipped with a heater. As shown in FIG. 2, the punching die 1 </ b> A is placed on the lower surface plate 92, and the punching object O disposed between the upper surface plate 91 and the lower surface plate 92 descends the upper surface plate 91. By that, it is punched out.

  In FIG. 1 (A), a punching die 1A has a punching blade 12 formed on the upper surface of a base (metal base) 11 by cutting out the same distance from the cutting edge E to the bottom surface of the base 11 at all locations. A heater mounting hole H (plural in FIG. 1) is formed in the base 11, and a heater (heating wire heater) 13 is inserted into the heater mounting hole H. In FIG. 1A, for convenience of explanation, only one heater 13 is shown. As the heater 13, a rod-shaped heater is used in FIG. 1A, but a membrane-shaped (sheet-shaped) heater can be attached to an appropriate portion of the base 11 for use. In this membrane heater, for example, a shallow groove may be formed in any of the base portions 11 and embedded in the groove.

  As a power source for the heating wire heater 13, a power source outside the surface plate is used in the present embodiment. An independent power source such as a secondary battery can be mounted on the punching die 1A or set on a surface plate, and the heater 13 can be heated. In this case, the wire is not routed. In the present invention, as the heater, a chemical heating element, for example, a material that reacts with oxygen in the air to generate heat can be placed inside or in close contact with the punching die 1A, and the punching blade 12 can be heated.

  In FIG. 1A, the bottom surface of the cutting die 1A is flat. However, as shown in FIG. 1B, a flat groove G is formed on the bottom surface, and the heat insulating material 14 is set in the groove G. it can. Thereby, it is possible to prevent the heat accumulated in the die 1A from being conducted to the surface plate. Note that a heat insulating plate made of ceramic, glass, hard plastic or the like may be disposed between the punching die 1A and the surface plate without forming a groove on the bottom surface of the punching die 1A.

FIG. 3 shows an embodiment of a temperature control system for a punching die in which a temperature sensor 15 is provided in the punching die 1A. In FIG. 3, the temperature sensor 15 is affixed to the upper surface of the base portion 11. However, a groove or a hole may be formed in the base portion 11 and the temperature sensor 15 may be embedded in the groove or hole.
A signal from the temperature sensor 15 is acquired by the control device 2. The control device 2 supplies power to the heater 13 by feedback control so that the temperature of the punching blade 12 (actually, the temperature in the vicinity of the temperature sensor 15) becomes an appropriate temperature.

  In FIG. 2, the die 1A is placed on the lower surface plate 92, but the die 1A can be attached to the upper surface plate 91 as shown in FIG. This attachment is performed by a known method. In FIG. 4A, the die 1A is attached to the upper surface plate 91 by a jig 911. For example, as shown in FIG. 4B, a magnet is formed in the groove GM formed on the bottom surface of the die 1A. 16 may be fixed, and the cutting die 1 </ b> A may be attached to the upper surface plate 91 by the magnetic force of the magnet 16.

FIG. 5 is a diagram illustrating a design change example of the first embodiment. As shown in FIG. 5A, the base 11 of the die 1A is composed of an upper base 111 and a lower base 112, and a groove G is formed on the lower surface of the upper base 111 as shown in FIG. 5B. Has been. The flat groove G provided in the lower base 112 is provided with a heat insulating material 14 having heat resistance. The heater 13 made of heating wire is disposed in the groove M. The heater 13 is provided with a number of insulating tubes I.
The heater 13 can generate heat by a commercial frequency (for example, 50 Hz, 60 Hz) or an alternating current having a frequency higher than the commercial frequency, or can be driven by a direct current. The voltage applied to the heater 13 is set as appropriate.

  A second embodiment of the present invention will be described. FIG. 6 is a perspective view showing a die 1B equipped with a heater. In the punching die 1B, a punching blade 12 having a partially different distance from the blade edge E to the bottom surface of the base 11 is formed on the upper surface of the metal base 11 by cutting. In addition, a heater 15 for heating the punching blade 12 is attached to the base 11.

  This punching die 1B is used together with the metal receiving member 3 shown in the side view of FIG. 7A and the plan view of FIG. 7B. Configure.

  7A and 7B, the receiving member 3 has a curved surface S corresponding to the cutting edge E of the punching die 1B shown in FIG. Further, a groove GS for weight reduction is formed inside the receiving surface S of the receiving member 3. The portion of the receiving surface S where the cutting edge (tip of the punching blade 12) abuts can be formed of a metal or an alloy (metal softer than the punching blade 12) such as copper, soft iron, or brass. The portion that contacts E can be made replaceable.

  As shown in FIG. 8, the first substrate 41 is attached to the upper surface plate 91, and the receiving member 3 is attached to the first substrate 41. The second substrate 42 is attached to the lower surface plate 92, and the receiving member 3 is attached to the second substrate 42.

  A guide member 43 is provided on the first base 41 and the second base 42. The guide member 43 is configured so that the first base 41 and the second base 42 can slide relative to each other in the vertical direction. In FIG. 8, the guide member 43 includes a slide rod 431 embedded in the four corners of the first base 41 and a guide tube 432 embedded in the second base 42.

  In the second embodiment, as in the first embodiment, a secondary battery or a hydrogen battery can be used as the power source of the heater 13, or a chemical heating element can be used instead of the heater of the heating wire. it can. Moreover, the heat insulation technique (setting the heat insulating material 14 shown to FIG. 1 (B) etc.) demonstrated in 1st Embodiment is employable. Furthermore, the die set U1 of the second embodiment can also be applied to the die temperature control system as shown in FIG.

  A third embodiment of the present invention will be described. FIG. 9 is a perspective view showing a die set U2 equipped with a heater. The die set U2 includes a first die 1Ca and a first die 1Cb.

  In the first punching die 1Ca, a groove GBa is formed on the upper surface (lower surface in the drawing) of the base portion 11a, and a punching blade 12a is formed inside the groove GBa. A punching blade 12a having the same distance from the cutting edge Ea of the punching blade 12a to the bottom surface (upper surface in the drawing) of the base portion 11a is formed by cutting. It is approaching. Also, pins 433 are provided at the four corners of the upper surface (lower surface in the drawing) of the base portion 11a.

  Similarly, in the second punching die 1Cb, a groove GBb is formed on the upper surface of the base portion 11b, and a punching blade 12a is formed inside the groove GBb. A punching blade 12b having the same distance from the cutting edge Eb of the punching blade 12b to the bottom surface of the base portion 11b is formed by cutting, and the cutting edge Ea slightly protrudes from the upper surface of the base portion 11a. A heater mounting hole H is formed in the base portion 11b, and a heater 13 for heating the punching blade 12b is inserted into the hole H. In addition, the heater 13 can be provided also in the base 11a of the 1st cutting die 1Ca. In addition, pin receiving holes 434 are provided at positions corresponding to the pins 433 at the four corners of the upper surface of the base portion 11b. The pin receiving hole 434, together with the pin 433, constitutes a guide member 43 that allows the first punching die 1Ca and the second punching die 1Cb to slide relative to each other in the vertical direction.

  FIGS. 10A and 10B show an example in which the first punching die 1Ca is attached to the upper surface plate 91, the first punching die 1Ca is attached to the lower surface plate 92, and the punching object O is punched. FIG. 10A shows a state before punching, and FIG. 10B shows an example after punching. The lower surface plate 92 can be arranged on the lower surface plate 92 with a degree of freedom in the horizontal direction of about several mm. Thereby, it is possible to prevent an excessive contact force from being generated between the pin 433 and the pin receiver 144.

  The punching blade 12a of the first punching die 1Ca and the punching blade 12b of the second punching die 1Cb can be created with high accuracy by a numerical control processing machine. Also, the pin 433 and the pin receiving hole 434 can be provided in the base portion 11a and the base portion 11b with high accuracy.

In the third embodiment, as in the first embodiment, a secondary battery or a hydrogen battery can be used as a power source for the heater 13, and a Peltier element heating element or a chemical heating element can be used instead of the heater of the heating wire. The body can be used. Moreover, the heat insulation technique (setting the heat insulating material 14 shown to FIG. 1 (B) etc.) demonstrated in 1st Embodiment is employable. Furthermore, the punching die set U2 of the third embodiment can also be applied to a punching die temperature control system as shown in FIG.
A fourth embodiment of the present invention will be described. In the fourth embodiment, a heating device is connected to the punching die as will be described later.

  As shown in FIG. 11, the punching die 1 </ b> D includes an upper base 511, a lower base 512, a punching blade 12, and a heating tube 55. A punching blade 52 is formed on the upper surface of the upper base 511 by cutting. On the lower surface side of the upper base portion 511 and on the upper surface side of the lower base portion 512, a half groove hG in which a heating tube 55 filled with a heat medium (liquid or gas) is mounted is formed. FIG. 12A is a plan view of the punching die 1D of FIG. 11, and FIG. 12B is a side view of the same. In this case, a heat insulating material can be formed in the half groove (for example, a heat insulating paint is applied).

  A heat insulating plate 54 made of ceramic, glass, hard plastic or the like can be disposed on the bottom surface of the punching die 1D shown in FIG. Further, a temperature sensor 56 is provided in the punching die 1D shown in FIGS.

  A heat insulating plate 54 made of ceramic, glass, hard plastic, or the like can be disposed on the bottom surface of the punching die 5B shown in FIGS. In addition, as shown in FIG. 13, the groove | channel G may be formed in the bottom face of the lower base part 512, and you may make it set the heat insulating material 54 in this groove | channel.

The heating device 6 is shown in the plan view of FIG. 14A and the left side view of FIG. The heating device 6 includes a fan 64 on the upper surface of the heating element 62. A state in which the fan 64 is removed is shown in the plan view of FIG. 15A and the left side view of FIG.
As shown in FIGS. 14 and 15, a heating tube 61 is built in the main body 60 made of synthetic resin of the heating device 6. A groove G61 is formed on the path of the heating tube 61 that oscillates in a reciprocating manner on the upper surface side of the main body 60 so that the heating tube 61 is exposed. A heating element 62 is mounted in the groove G61. A groove G62 is formed on the heating pipe 61 path on the upper surface side of the main body 60, and a pump 64 is mounted in the groove G62.

  The heating device 6 also includes a control device 69, which receives a temperature detection signal from the temperature sensor 56 and controls the power supplied to the heating element 62. The control device 69 includes a CPU, a control table, a power conversion circuit, etc., converts the supply voltage to a voltage as appropriate, and appropriately supplies power to the heating element 62 from the temperature detection value from the temperature sensor 66 and the control table. Supply.

  FIG. 16 shows an example in which the cutting die 1D to which the heating device 6 is attached is installed on the lower surface plate 92. In FIG. 16, the object O provided between the punching die 1 </ b> D and the auxiliary plate 83 provided on the upper surface plate 91 can be punched out.

  As shown in the plan view of FIG. 17A and the left side view of FIG. 17B, the structure on the upper surface plate 91 side is heated when the wind from the fan 64 is not applied to the object O. It is also possible to attach the device 6 directly to the die 1D.

  A fifth embodiment of the present invention will be described. FIG. 18A is an exploded perspective view showing a die 1E equipped with a heater. The die 1 </ b> E includes an upper base 781, a lower base 782, and a heating tube 75. The upper base portion 781 and the lower base portion 782 are made of metal, and a punching blade 12 is formed on the upper surface of the upper base portion 781. Grooves 73 and 74 are formed on the opposing surfaces of the upper base 781 and the lower base 782. These grooves 73 and 74 are opened at the ends so that the ends are opened when the upper base 781 and the lower base 782 are combined.

  The heating tube 75 is a metal tube, which is a metal tube having a circular cross section in the present embodiment, and is bent into a shape along the shape of the punching blade 12. In place of the metal tube, a tube made of a material having excellent heat resistance and high thermal conductivity can be used. FIG. 18B shows a perspective view of the upper base 781 as viewed from below.

As shown in FIG. 19, the upper base portion 781 and the lower base portion 782 are combined in a state where the heating tube 75 is disposed in a space formed by the grooves 73 and 74. In the present embodiment, in particular, the portion of the punching blade 12 can be heated by circulating a heating medium through the heating tube 75.
Also in the punching die 1E of the fifth embodiment, although not shown, a heating device attached with the above-described control device is connected to construct a punching die temperature control system.

  In the fourth embodiment and the fifth embodiment, the heating medium is circulated in the punching dies 1D and 1E using the heating tube, but the heating medium circulation groove is provided in the dies 1D and 1E without using the heating tube. May be provided. In this case, a heat insulating material can be formed in the half groove formed in the lower base (for example, a heat insulating paint is applied).

  FIG. 1B and FIG. 13 show examples in which the heat insulating material 14 and the heat insulating material 54 are provided on the lower surface of the punching die. In the first to fifth embodiments, the heat insulating material as described above can be attached to a portion excluding the punching blade of the punching die. Further, in the first to fifth embodiments, the heat insulating paint can be applied to a portion excluding the punching blade, and in the fourth and fifth embodiments, the substantially lower half portion of the heating tube. Can be coated with a heat insulating material or a heat insulating paint. Thereby, heating efficiency improves.

FIG. 20A shows an example in which the heat insulating paint CP is applied to the lower portion of the heating tube 75 shown in FIGS. 18A and 19. FIG. 20B shows an example in which a heat insulating paint is applied to the entire surface excluding the punching blade of the punching die shown in FIGS.
In the fifth embodiment, the base portion can be removed so that the punched blade portion remains. Thereby, heating efficiency improves. FIG. 20C shows an example in which the base of the punching die shown in FIGS. 18A and 19 is removed while leaving the portion of the punching blade.

  A sixth embodiment of the present invention will be described. FIG. 21A is an exploded perspective view showing a punching die 1F equipped with a heater. The die 1 </ b> F includes an upper base 881, a lower base 882, a Thomson blade (band-shaped blade) 79, and a heating tube 75. The upper base 781 and the lower base 782 are made of plywood, and grooves GT1 and GT2 corresponding to the shape of the Thomson blade 89 are formed on the opposing surfaces. The Thomson blade 89 is formed with an arch-shaped notch OC. In the upper base portion 881 and the lower base portion 882, a slit SLT in which the Thomson blade 89 is mounted is formed. The depth of the slit S is formed so as to correspond to the arch-shaped notch OC, and penetrates in a portion where the notch OC is not present, and the depth along the arch shape in a portion corresponding to the arch-shaped notch OC. Is formed.

  In this embodiment, the heating tube 75 is a metal tube having a rectangular cross section, and is bent into a shape along the outer periphery of the Thomson blade 89. In place of the metal tube, a tube made of a material having excellent heat resistance and high thermal conductivity can be used.

FIG. 21B is a perspective view of the upper base 881 as viewed from below.
FIG. 22 is a perspective view showing a state in which the upper base portion 881, the lower base portion 882, the Thomson blade 89, and the heating tube 85 are assembled. In this state, a synthetic resin (resin R in this embodiment) having strength when cured is injected into the space formed by the grooves GT1 and GT2.
Also in the punching die 1F of the sixth embodiment, although not shown, a heating device attached with the above-described control device is connected to construct a punching die temperature control system.

  A seventh embodiment of the present invention will be described. FIG. 23A is a side view showing a punching die 1G on which a high-frequency induction heating coil is mounted, and FIG. 23B is a plan view of the same. In the punching die 1G, the center of the punching die 1G is heated by a coil C1 (in this embodiment, it can be composed of one or two or more winding cooling tubes).

An eighth embodiment of the present invention will be described. FIG. 24A is a side view showing a punching die 1H on which a coil for high-frequency induction heating is mounted, and FIG. 24B is a plan view of the same. In the punching die 1G, the blade portion of the punching die 1H is heated by the coils C11 and C12.
Although details of the heating control in the seventh and eighth embodiments are omitted, a temperature sensor is provided, and a high-frequency signal supplied to the coil can be controlled by the detected value.

  As described above, in each of the above-described embodiments, when punching out a sheet (liquid crystal filled sheet or the like) that is soft at room temperature but hard at low temperature, or a sheet having an adhesive layer between the surface or internal layers (adhesive sheet with release paper). There is no inconvenience that the object is deformed or the adhesive adheres to the punching blade.

  For reference, FIG. 25A shows an example in which a heater is provided on the receiving member 98 of the die 1I. In FIG. 25A, the heater is a high-frequency induction heating coil, and a receiving member 98 is provided on the surface plate (upper surface plate 91) side where the punching die 1I is not provided. As shown in FIG. 25B, the receiving member 98 is configured to be divided into receiving member components 981, 982.

  In the punching die apparatus of FIG. 27, as shown in the side view of (A), the plan view of (B), and the front view of (C), during the punching process (while the upper surface plate 91 is separated from the punching die 1J). ), The cutting die 1J can be moved to the heating chamber 90 and heated to be returned to the lower surface plate 92. In the example of FIG. 26, the lower platen 92 is provided with a cutting die moving rail GR, and the heating chamber 90 is provided with an infrared heater IRH.

  27, as shown in FIGS. 28 (A), (B), (C), and (D), during the punching process (while the upper surface plate 91 is away from the punching die 1K). ), The cutting die 1K can be moved to the heating chamber 90 and heated to be returned to the lower surface plate 92. Although not shown in the drawing die apparatus of FIG. 27, a positioning mechanism is provided on the lower surface plate 92 and the cutting die 1K, and the cutting die operation arm CA is operated to position the cutting die 1K on the lower surface plate 92. can do. Also in this example, the heating chamber 90 is provided with an infrared heater IRH.

  In the punching die apparatus of FIG. 29, as shown in FIGS. 30A, 30B and 30C, during the punching process (while the upper surface plate 91 is away from the punching die 1L), the upper and lower surface plates The heater holder HD can be moved from the outside of 91 and 92 to the cutting edge portion of the die 1L. An infrared heater IRH is attached to the heater holder HD and is moved by the operation arm CA. The cutting edge portion of the cutting die 1L is heated by the infrared heater IRH, and the heater holder HD can be extracted from between the upper surface plate 91 and the lower surface plate 92 before the upper surface plate 91 approaches the cutting die 1L.

  26, 27, and 28, heating is performed by the infrared heater IRH, but heating means such as a high frequency induction heating coil can be provided instead.

  In each of the embodiments described above, the speed in the vicinity of the lowest point of the upper surface plate 91 is reduced as compared with the normal cutting in order to lengthen the time for the cutting edge to contact the punched object when cutting. The upper surface plate 91 can be stopped for a short time at the lowest point to promote heating of the blade edge portion.

1A, 1B, 1Ca, 1Cb, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L Cutter 2 Control device 11, 11a, 11b, 51, 511, 512 Base (metal base)
12, 12a, 12b, 52 Punching blade 13 Heater 14 Heat insulating material 15 Temperature sensor 16 Magnet 41 First substrate 42 Second substrate 43 Guide member 54 Heat insulating plate 55 Heating tube 56 Temperature sensor 90 Heating chamber 91 Upper surface plate 92 Lower surface plate 98 Receiving member 431 Sliding rod 432 Guide tube 433 Pin 434 Pin receiving hole 911 Jig 981, 982 Receiving member component C Heater mounting groove CA Punching die operation arm E, Ea, Eb Cutting edge GR Cutting die moving rail H Heater mounting hole HD heater holder IRH Infrared heater O Object to be punched U1, U2 Die set

Claims (10)

A punching die provided in at least one of the upper and lower surface plates, punching an object to be punched between upper and lower surface plates with a punching blade,
The punching die is provided with a heater for heating the punching blade.   The punching die according to claim 1, wherein the punching blade is a cutting blade, and the heater is provided almost directly below the punching blade along a planar view shape of the punching blade.   The punching die according to claim 1, wherein the punching blade is a belt-like blade, and the heater is provided in contact with the belt-like blade along a planar view shape of the belt-like blade.   3. The punching blade is a cutting blade, and a heat insulating material is attached or applied to all or a part of a portion where the cutting blade is not formed. Punching mold.   The die according to any one of claims 1 to 4, wherein the heater is a heating wire heater or a Peltier element heater.   The die according to any one of claims 1 to 4, wherein the heater is a flow path through which a heat medium flows. A temperature control system using the punching die according to any one of claims 1 to 6,
The punching die temperature control system, wherein the punching die is provided with a temperature sensor for detecting the temperature of the punching blade, and the amount of heat supplied to the heater is controlled based on a signal from the temperature sensor. A temperature control system using the punching die according to claim 6,
A die temperature control system, wherein a temperature sensor is provided at any location of the flow path, and the temperature of the heat medium supplied to the heater is controlled based on a signal from the temperature sensor. A punching die device for punching an object to be punched between upper and lower surface plates with a punching blade provided on at least one of the upper and lower surface plates,
A moving device for moving the punching die from the installation position of the surface plate to a heating chamber outside the upper and lower surface plates;
While the upper surface plate is separated from the punching die, at least the cutting edge portion of the punching die is heated in the heating chamber. A punching die device for punching an object to be punched between upper and lower surface plates with a punching blade provided on at least one of the upper and lower surface plates,
A movable heater for non-contact heating of at least the punching blade of the punching die;
An operation device for moving the movable heater to the outside of the upper and lower surface plates and the cutting edge portion of the punching blade;
While the upper surface plate is separated from the punching die, at least the cutting edge portion of the punching die is heated.