JP2015073994A - Rotary cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary cutter that does not cause the occurrence of burrs or curls in a cutting line of a metal sheet or a metal foil being a cutting object and that can surely cut even a cutting object in which metal exposed faces and metal non-exposed faces coexist.SOLUTION: A rotary cutter 1 of the present invention comprises a punching roll that has a convex punch on the surface and is rotatable in a first direction, a die roll that has on the surface, a receiving part paired with the convex punch, and is rotatable in a second direction reverse to the first direction, and a rotation control part that rotates at least the punching roll and the die roll by means of their respective revolving shafts. The outer periphery of the convex punch and that of the receiving part correspond to the cutting shape of a cutting object. The rotation control part feeds the cutting object into a gap between the punching roll and the die roll together with an intermediary body kept in contact with at least one of the front face of the back face of the cutting object. The front face of the cutting object has a mixture of metal exposed faces and metal non-exposed faces, and the intermediary body comes in contact with only the metal exposed faces.

Description

  The present invention relates to a rotary cutter that cuts a very thin metal member such as a thin metal plate or a metal foil into a predetermined shape by shearing.

  In many cases, it is required to cut a thin metal plate or a metal foil formed of a metal material into a predetermined shape. This is because components mounted on various machines and electronic devices are often formed of thin metal members having such a predetermined shape. For example, a storage battery such as a fuel cell has a large number of electrodes formed of a metal thin film.

  In cutting such a thin metal plate or metal foil into a predetermined shape, a cutting device for punching and cutting using a combination of a punch having a cutting blade and a die that receives the punch is used. For example, a die is provided on the bottom surface of a thin metal plate or metal foil that moves in a predetermined direction, and a cutter is provided on the top surface. The cutter moves up and down to a die at a predetermined position, fits into the die, and is cut by a shearing force. At this time, the metal thin plate and the metal foil are plastically deformed by the biting into the gap (clearance) between the end surface of the cutter and the end surface of the die, and burrs and burrs are generated. In the so-called cutting with a combination of a cutter and a die formed of metal or alloy (even when the cutter and the die are rotating members that rotate relative to each other), biting into the gap between the cutter and the die is not possible. It is a cause of plastic deformation that causes burrs.

  In such a cutting device, the cutting speed cannot be increased because it is necessary to alternately cut a thin metal plate or metal foil that moves in a linear direction and feed the cutting target. Many parts formed of thin metal plates or metal foils are highly cost-required, and the cutting speed is related to this cost.

  In order to realize a cutting speed corresponding to such a cost reduction request, a rotary cutter that cuts a thin metal plate or a metal foil by rotation of a pair of rotating members facing each other is used. The rotary cutter has a punch roll having a cutting blade on one of a pair of rotating members, and a die roll on the other. The punch roll has a convex cutting blade having an end surface that forms a cut surface of the object to be cut. The die roll has a recess receiving portion facing the convex portion of the punch roll.

Each of the punch roll and the die roll rotates in the opposite direction, and the cutting blade and the receiving portion face each other and come into contact with the cutting object, so that the rotary cutter can cut the cutting object into a predetermined shape. At this time, the predetermined shape to be cut is a shape determined by the cutting blade and the receiving portion.
At this time, since the metal thin plate or the like is cut by the progress of the cutting pressure on the outer periphery due to the rotation of the pair of rotating members, the rotary cutter can cut the metal thin plate or the like one after another. As a result, the rotary cutter can perform a cutting operation at a higher speed than a cutting device for punching by vertical movement, because the workpiece is simultaneously fed and cut.

  In such a situation, a technique regarding a rotary cutter has been proposed (see, for example, Patent Document 1 and Patent Document 2).

JP-A-3-246000 International Publication WO2010 / 013818 A1

  Patent Document 1 discloses a rotary cutter in which a pair of rotating members provided with a convex punch and a receiving cylinder rotate in opposite directions, and the convex punch and the receiving cylinder come into contact with each other to cut an object. . Patent Document 1 discloses a technique that mainly cuts cloth or paper into a predetermined shape.

  It is conceivable that the technique of Patent Document 1 is applied to cutting a thin metal member such as a thin metal plate or a metal foil by changing the material or shape of the convex punch.

  The rotary cutter disclosed in Patent Document 1 applies a pressure to a cutting object and cuts the cutting object by a push-off method when a convex punch and an anvil roll as a receiving portion come into contact with each other. When the metal foil is cut in this manner, the object to be cut undergoes elastic deformation and plastic deformation before being cut. Such elastic deformation and plastic deformation cause burrs and burrs at the cutting line of a thin metal plate or metal foil, and deteriorate the performance of various parts manufactured by cutting (parts that cannot be used in some cases) Becomes). In addition to cost, it may be insufficient for manufacturing parts that require high quality.

  Here, the rotary cutter disclosed in Patent Document 1 has a cutting mode defined as so-called “push cutting”. Push-cutting crushes and breaks the cut portion of the object to be cut. For this reason, push-cutting causes deformation at the cut portion, and this deformation becomes the above-described burrs and burrs. If the object to be cut is a material such as cloth or paper, there are many applications where there is no problem even if such deformation, burrs or burrs occur.

  However, if the object to be cut is a thin metal plate or a metal foil, it is extremely difficult to cut because it is deformed and stretched by crushing by pressing. Moreover, even if it can be cut, plastic deformation (elongation or crushing) occurs in the process, and the quality of the cut portion is deteriorated (it is not cut in a size and shape according to the specification). There is a problem that is not suitable for cutting a cutting object such as a foil.

  On the other hand, Patent Document 2 discloses a technique in which a non-metallic layer (intermediate body) is attached to at least one of the front and back surfaces of a thin metal plate or metal foil to be cut and then punched. By providing the non-metallic layer, the technique disclosed in Patent Document 2 makes it easy to cut a metal thin plate or a metal foil. As a result, it is difficult to give elastic deformation or plastic deformation other than the shearing force necessary for cutting to the metal thin plate or metal foil, and it is difficult to generate burrs and burrs on the cutting line.

  By attaching this non-metallic layer as an intermediate to the surface of the object to be cut, even if the object to be cut is a very thin metal sheet or metal foil, the cutter of Patent Document 2 generates almost no burrs or burrs. It can cut along the cutting line without doing. By providing the intermediate body, dislocation due to plastic deformation of the intermediate body becomes the driving force for punching the (especially metal) foil, and the foil can be punched along the cutting line with relatively small burrs and burrs. it can.

  However, even the technique of Patent Document 2 has a problem that cutting is difficult when the object to be cut mixes a metal surface portion and a non-metal surface portion. The "metal exposed surface" mentioned here is "a portion having no non-metal layer on either front or back", and "non-metal exposed surface" is "a portion having a non-metal layer on one or both of the front and back" Point to. For example, depending on the object to be cut, a non-metallic coating layer or plating layer may be applied to a part of the surface of a thin metal plate or metal foil. At this time, a non-metallic coating layer or a plating layer may be applied to only a part of one of the front and back surfaces of the metal thin plate or metal foil.

  When it is necessary to cut across such a coating layer or plating layer and a metal exposed surface without these, there is a problem that even if an intermediate is used, it cannot be cut cleanly. For example, the metal exposed surface portion can be cut, but the structure of the non-metal exposed surface portion is broken, or the cutting quality varies in each surface portion.

  Thus, even Patent Document 2 using an intermediate has a problem that cutting with high cut surface quality is difficult depending on the structural characteristics of the object to be cut.

  If the object to be cut is a mixture of a part where only the metal surface is exposed and a part where the non-metal surface is exposed, the stress suitable for the metal part and the stress suitable for the non-metal part Is considered to be different. On the other hand, the stress generated by the pressure between the convex punch and the die is constant for the entire cutting object. For this reason, there exists a problem that it is difficult to cut | disconnect reliably the cutting target object in which the exposed surface of a metal part and a nonmetal part is mixed with one rotary cutter.

  For example, if the stress is adjusted to the metal part, excessive stress is applied to the cutting of the non-metallic part, and the structure of the non-metallic part is broken. Cutting is insufficient. In other words, the stress required for cutting the metal foil is naturally greater than the stress required for cutting the non-metal portion.

  As described above, the conventional techniques represented by Patent Documents 1 and 2 have the following problems.

  (Problem 1) Burrs and burrs are generated in the cutting line of the thin metal plate or metal foil that is the object to be cut.

  (Problem 2) When the metal thin plate or metal foil that is the object to be cut is pressed against the die with a strong pressure, the metal thin plate or metal foil is bonded to the anvil roll or the convex punch tip (metal adhesion). The performance of the cutting device is likely to deteriorate. If the degree is severe, it will bite and stop moving.

  (Problem 3) In order to avoid Problem 1, even when an intermediate is installed on the surface of the cutting object as in Patent Document 2, the cutting object has a portion where the metal surface is exposed and a non-metallic surface. In the case of mixing with the exposed part, there is a problem that it cannot be cut cleanly with a cutting line straddling the metal part and the non-metal part. For example, the metal part cannot be cut with a stress suitable for cutting the non-metal part. On the other hand, stress suitable for cutting the metal part destroys or damages the periphery of the cutting line of the non-metal part.

  The present invention does not cause burrs or burrs in the cutting line of the thin metal plate or metal foil that is the object to be cut, and even if the object to be cut has both a metal exposed surface and a non-metal exposed surface. It aims at providing the rotary cutter which can be cut | disconnected.

In view of the above problems, the rotary cutter of the present invention is
A punch roll having a convex punch on the surface and rotatable in a first direction;
A die roll having a receiving portion on the surface that is paired with the convex punch and rotatable in a second direction opposite to the first direction;
A rotation control unit for rotating at least the punch roll and the die roll by the respective rotation shafts,
The outer circumference of the convex punch and the receiving part corresponds to the cutting shape of the object to be cut,
The rotation control unit feeds the cutting object into the gap between the punch roll and the die roll together with the intermediate that is brought into contact with at least one of the front surface and the back surface of the cutting object,
The surface of the cutting object has both a metal exposed surface and a non-metal exposed surface, and the intermediate body contacts only the metal exposed surface.

  The rotary cutter of this invention cut | disconnects a cutting target object by the intermediate body and a cutting target object, and the hard surfaces of a punch roll which is a pair of rotation member, and die roll are non-contacting. For this reason, when cutting an object to be cut, strong elastic deformation and plastic deformation are hardly given to the object to be cut, and burrs and burrs are hardly generated on the object to be cut.

  Further, the intermediate is applied only to the exposed metal portion of the object to be cut, and is not applied to the non-metal exposed portion. As a result, in the cutting by the punch roll and the die roll, the rotary cutter of the present invention can perform cutting suitable for each of the metal exposed portion and the non-metal exposed portion.

  As a result, the cut surface is clean, and a member using a very thin metal thin plate or metal foil can be used for various applications.

It is a side view of the rotary cutter in Embodiment 1 of this invention. It is an exploded view of the rotary cutter in Embodiment 1 of this invention. It is a front view of the cutting target in Embodiment 1 of the present invention. It is sectional drawing of the cutting target in Embodiment 1 of this invention. It is a front view of the cutting target object with which the intermediate in Embodiment 1 of the present invention was contacted. It is explanatory drawing explaining the cutting | disconnection of the cutting target object in Embodiment 1 of this invention. It is a front view which shows the cutting target object and cutting shape in Embodiment 1 of this invention. It is a side view of the rotary cutter in Embodiment 2 of this invention. It is a front view which shows the cutting target object and intermediate body in Embodiment 2 of this invention. It is a schematic diagram of the rotary cutter in Embodiment 2 of this invention.

The rotary cutter according to the first invention of the present invention is
A punch roll having a convex punch on the surface and rotatable in a first direction;
A die roll having a receiving part paired with a convex punch on the surface and rotatable in a second direction opposite to the first direction;
A rotation control unit for rotating at least the punch roll and the die roll by the respective rotation shafts;
The outer circumference of the convex punch and the receiving part corresponds to the cutting shape of the object to be cut,
The rotation control unit feeds the cutting object into the gap between the punch roll and the die roll together with the intermediate that is brought into contact with at least one of the front surface and the back surface of the cutting object,
The surface of the cutting object has both a metal exposed surface and a non-metal exposed surface, and the intermediate body contacts only the metal exposed surface.

  With this configuration, the rotary cutter can cut reliably and without defects even when the metal exposed surface and the non-metal exposed surface coexist and the cutting shape extends over the metal exposed surface and the non-metal exposed surface.

In the rotary cutter according to the second invention of the present invention, in addition to the first invention,
The convex punch and the receiving part are arranged to face each other so as to sandwich the cutting object passing through the gap by the rotation of the punch roll and the die roll,
The outer periphery of the convex punch and the outer periphery of the receiving portion face each other and apply pressure to the object to be cut, thereby cutting the object to be cut along a cutting line formed by the outer periphery.

  With this configuration, the rotary cutter can cut the cutting object with a predetermined cutting shape determined by the convex punch and the receiving portion. Since it is a rotary type cutting, it is possible to cut the object to be cut according to the cutting shape one after another at a high speed.

In the rotary cutter according to the third invention of the present invention, in addition to the first or second invention,
The object to be cut has a base formed on at least one of a metal and an alloy, and a non-metallic layer formed on at least a part of the front and back surfaces of the base,
The portion having the non-metal layer on one or both of the front and back surfaces is a non-metal exposed surface, and the portion not having the non-metal layer on either the front and back surfaces is a metal exposed surface.

  With this configuration, a member in which a metal exposed surface and a nonmetal exposed surface are mixed after cutting is obtained.

  In the rotary cutter according to the fourth aspect of the present invention, in addition to the third aspect, the non-metal layer is formed on the substrate by at least one of coating, plating and adhesion.

  With this configuration, the nonmetallic layer can be easily formed on the substrate.

  In the rotary cutter according to the fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the intermediate body is mounted in advance on the metal exposed surface of the object to be cut.

  With this configuration, the intermediate body is fed into the gap in a state where the intermediate body is reliably in contact with the exposed metal surface.

  In the rotary cutter according to the sixth aspect of the present invention, in addition to any of the first to fourth aspects, the intermediate body is fed into the gap together with the object to be cut in accordance with the exposed metal surface.

  With this configuration, the intermediate body and the object to be cut are fed into the gap with few steps.

In the rotary cutter according to the seventh aspect of the present invention, in addition to any of the first to sixth aspects, the intermediate body is thicker than the object to be cut.

  With this structure, when the intermediate body is subjected to compressive stress and dislocations are generated in the structure, the dislocation size in the thickness direction (the width of the dislocation of the structure) is large enough to shear the metal sheet. can do. Moreover, the generation | occurrence | production of the burr | flash and burrs in the cutting | disconnection by a metal exposed surface can be prevented more reliably.

  In the rotary cutter according to the eighth aspect of the present invention, in addition to the seventh aspect, the width of the intermediate is not less than the width of the convex punch overlapping the exposed metal surface and not more than the maximum width of the exposed metal surface.

  With this configuration, the cost of the intermediate can be reduced.

  In the rotary cutter according to the ninth aspect of the present invention, in addition to any one of the first to eighth aspects, a setting device that is inserted into the gap so that the intermediate body contacts only the exposed metal surface is further provided. Prepare.

  With this configuration, the intermediate body can be reliably brought into contact with only the exposed metal surface.

  Hereinafter, embodiments will be described with reference to the drawings.

  (Embodiment 1)

  Embodiment 1 will be described.

(overall structure)
First, the whole structure of the rotary cutter in Embodiment 1 is demonstrated. FIG. 1 is a side view of a rotary cutter according to Embodiment 1 of the present invention. FIG. 2 is an exploded view of the rotary cutter according to Embodiment 1 of the present invention. FIG. 2 shows the elements of the rotary cutter shown in FIG. 1 in an exploded state for understanding.

  The rotary cutter 1 includes a punch roll 2, a die roll 3, and a rotation control unit 4. The rotary cutter 1 having these elements cuts a cutting object 5 fed into a gap generated between the punch roll 2 and the die roll 3 into a predetermined shape. Further, the rotary cutter 1 includes a feed roll 41 that feeds the cutting object 5 into the gap between the punch roll 2 and the die roll 3. For this reason, the rotation control unit 4 controls the rotation of the punch roll 2, the die roll 3, and the feed roll 41.

  The punch roll 2 has a convex punch 21 on its surface. The convex punch 21 has an outer periphery for cutting the workpiece 5 into a predetermined shape, and FIG. 2 shows the convex punch 21 having a square outer periphery as an example. Of course, the convex punch 21 may have other shapes. Further, as shown in FIG. 2, the convex punch 21 protrudes from the surface of the punch roll 2.

  The punch roll 2 is rotatable in the first direction. An arrow A indicates the first direction. The rotation control unit 4 rotates the punch roll 2 in the first direction along the arrow A with the rotation shaft 22 as the rotation center.

  The die roll 3 is a member that is paired with the punch roll 2. The rotary cutter 1 is configured by the punch roll 2 and the die roll 3 being paired. The die roll 3 has a receiving portion 31 that is paired with the convex punch 21. Since the receiving portion 31 is paired with the convex punch 21, the receiving portion 31 has the same outer peripheral shape as the outer periphery of the convex punch 21. In addition, it is appropriate that the receiving portion 31 is recessed in accordance with the protrusion of the convex punch 21. In FIG. 2, it is shown that the receiving part 31 is recessed.

  The die roll 3 is rotatable in a second direction that is opposite to the first direction that is the rotational direction of the punch roll 2. An arrow B indicates the second direction. At this time, similarly to the punch roll 2, the rotation control unit 4 rotates the die roll 3 in the second direction indicated by the arrow B with the rotation shaft 32 as the rotation center.

  The punch roll 2 and the die roll 3 are arranged to face each other by rotating in the first direction and in the second direction while facing the respective surfaces. In each rotation, a gap is generated between the punch roll 2 and the die roll 3 (the positions of the rotary shaft 22 and the rotary shaft 32 that fix the positions of the punch roll 2 and the die roll 3 are determined so that a gap is generated. Just fine). Further, the size of the gap can be adjusted by adjusting the positions of the rotary shaft 22 and the rotary shaft 32.

  The rotation control unit 4 sends the cutting object 5 into this gap. At this time, the rotation control unit 4 feeds the cutting object 5 using the feed roll 41. The rotation control unit 4 may be a plurality of elements instead of a single element. In short, it is only necessary to exhibit the function of rotating the punch roll 2 and the die roll 3 and the function of feeding the cutting object 5. The rotation control unit 4 may have a function of adjusting the positions of the rotary shaft 22 and the rotary shaft 32 as necessary. That is, the rotation control unit 4 is an element that can control the operations of the punch roll 2 and the die roll 3 which are main elements of the rotary cutter 1.

  When the rotation control unit 4 sends the cutting object 5 into the gap, the rotation control part 4 sends the cutting object 5 into the gap together with the intermediate body 6 brought into contact with at least one of the front and back surfaces of the cutting object 5. In FIG. 1, the intermediate body 6 is in contact with the surface of the cutting object 5 (on the side of the punch roll 2).

  Here, the cutting object 5 has a mixed metal exposed surface and a non-metal exposed surface. FIG. 3 is a front view of the object to be cut in the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the object to be cut in Embodiment 1 of the present invention. FIG. 4 shows a state in which the cutting object 5 of FIG. 3 is viewed from the cross-sectional direction.

  The cutting object 5 has a base 51 formed of at least one of a metal and an alloy, and a non-metal layer 53 formed on at least a part of the front and back surfaces of the base 51. The substrate 51 is a very thin metal sheet or metal foil. The non-metal layer 53 is made of various materials such as resin and ceramic, and is formed on the base 51 by at least one of application, plating, and adhesion.

  In this way, the non-metal layer 53 is formed on a part of the base 51 such as a thin metal plate or a metal foil, so that the part where the base 51 is exposed as it is and the part where the non-metal layer 53 is exposed as it is. Will occur. A portion where the base 51 is exposed as it is is a metal exposed surface 52, and a portion where the non-metal layer 53 is exposed is a non-metal exposed surface 54.

  The cutting object 5 may mix the metal exposed surface 52 and the non-metal exposed surface 54 in this manner depending on the use after being cut. For example, there is a case where a cut member is used for an electrode of a storage battery. In particular, as a member having a non-metal layer 53 formed on a part of a base 51 such as a metal thin plate or metal foil and having a metal exposed surface 52 and a non-metal exposed surface 54, a positive electrode material for a secondary battery is used. There is. Since a large number of positive electrode materials for the secondary battery are required inside the secondary battery, the cutting target portion 5 in which the metal exposed surface 52 and the nonmetal exposed surface 54 coexist is cut one after another by the rotary cutter 1. Thus, a large number of positive electrode materials are manufactured.

  The intermediate body 5 contacts only the metal exposed surface 52. That is, the intermediate body 5 is brought into contact with the exposed metal surface 52 and fed into the gap between the punch roll 2 and the die roll 3.

  FIG. 5 is a front view of the cutting object with which the intermediate body according to Embodiment 1 of the present invention is brought into contact. As shown in FIG. 5, the intermediate body 6 is in contact with only the metal exposed surface 52 of the cutting object 5 (in other words, does not contact the non-metal exposed surface 54). The cutting object 5 is fed into the gap in a state where the intermediate body 6 is in contact with only the metal exposed surface 52. The rotary cutter 1 has the above configuration and cuts the cutting object 5 into a predetermined shape.

(Overview of operation)
The rotary cutter 1 having the above-described configuration cuts the cutting object 5 in a predetermined cutting shape according to the following operation outline. At this time, the cutting object 5 has a metal exposed surface 52 and a non-metal exposed surface 54 mixed together as shown in FIGS. In addition, the cutting shape extends over the metal exposed surface 52 and the non-metal exposed surface 54, and the rotary cutter 1 has a cutting shape that extends over the metal exposed surface 52 and the non-metal exposed surface 54. Cut without problems.

  The cutting object 5 in which the intermediate body 6 is brought into contact with the gap is fed by the rotation control unit 4 and simultaneously the punch roll 2 and the die roll 3 are rotated. When the punch roll 2 rotates in the first direction and the die roll 3 rotates in the second direction, the cutting object 5 is pulled into the gap (together with the intermediate body 6). By this drawing, the cutting object 5 and the intermediate body 6 move in the direction of arrow C. This operation may or may not use the feed roller 41. As for the feed roller 41, it is only necessary to select whether the feed roller 41 is used according to the size of the object to be cut and the strictness of alignment in the gap.

  Here, in the rotation of the punch roll 2 and the die roll 3, the convex punch 21 and the receiving portion 31 are positioned to face each other during the rotation. This is realized by previously setting the rotation start states of the punch roll 2 and the die roll 3 in this way. By setting in this way, when each of the punch roll 2 and the die roll 3 rotates, the convex punch 21 protruding in a convex shape and the receiving portion 31 recessed in a concave shape shown in FIG. 2 face each other. A state is born. By this opposition, the outer periphery of the convex punch 21 applies pressure to the intermediate body 6 and the cutting object 5.

  Actually, as shown in FIG. 5, since the intermediate body 6 is in contact with only the metal exposed surface 52, the outer periphery of the convex punch 21 has a cutting object 5 in a portion where the intermediate body 6 is present. At the same time, pressure is applied to the intermediate body 6, and pressure is applied only to the cutting object 5 in a portion where the intermediate body 6 is not present. In other words, the outer periphery of the convex punch 21 overlapping the metal exposed surface 52 applies pressure to the intermediate body 6 and the cutting object 5 (the outer periphery is pressed against the intermediate body 6). On the other hand, the outer periphery of the convex punch 21 overlapping the non-metal exposed surface 54 applies pressure to the non-metal exposed surface 54 of the workpiece 5 (the outer periphery is pressed against the non-metal exposed surface 54).

  FIG. 5 shows a cutting shape 8 in which the convex punch 21 is pressed against the cutting object 5 and the intermediate body 6 to be cut. As FIG. 1 and FIG. 2 show, since the outer periphery of the convex punch 21 and the receiving part 31 which becomes a pair with this is a square, the cutting shape 8 also becomes a square.

  By rotating the punch roll 2 and the die roll 3, the cutting object 5 and the intermediate body 6 are sandwiched while the convex punch 21 and the receiving part 31 face each other, so that the cutting object 5 is matched to the cutting shape 8. Can be cut. At this time, the cutting shape 8 extends over the metal exposed surface 52 and the nonmetal exposed surface 54 of the object 5 to be cut (the convex punch 21 and the receiving portion 31 are formed on the metal exposed surface 52 and the nonmetal exposed surface 54). Straddling).

  The portion of the metal exposed surface 52 is in a state of a metal thin plate or metal foil. In this metal exposed surface 52, the outer periphery of the convex punch 21 forming the cut shape does not directly contact the cutting object 5 to apply pressure, but contacts the intermediate body 6 to apply pressure. When the intermediate body 6 is punched by a shearing force (the structure is dislocated like a fault), the exposed metal surface 52 is also punched along the dislocation. As a result, in the cutting line along the outer periphery of the convex punch 21, burrs and burrs are less likely to occur after cutting.

  In the region where the intermediate body 6 is in contact (the metal exposed surface 52), the intermediate body 6 is cut along the cutting line in the metal exposed surface 52 by causing dislocation. Dislocation refers to a linear disturbance formed in a lattice arrangement with respect to a point defect in a metal or alloy material. When this dislocation occurs, it is considered that a metal or alloy material can be processed (cut) with a force much smaller than the theoretical shear stress.

  In the rotary cutter 1 according to the first embodiment, the intermediate 6 itself causes dislocations on the exposed metal surface 52 which is a thin metal plate or metal foil. It is considered that the dislocations generated by the intermediate 6 cause dislocations to the metal thin plate and the metal foil that are the exposed metal surfaces 52 as they are, and a reliable cut is generated.

  That is, when the intermediate body 6 is brought into contact, the dislocation is connected from the intermediate body 6 to the base body 51 that is the metal exposed surface 52 by the pressure of the convex punch 21, and even the metal exposed surface 52 is free of burrs and burrs. It is cut with little occurrence.

  On the other hand, in the portion of the non-metal exposed surface 54, the outer periphery of the convex punch 21 forming the cut shape directly contacts the non-metal exposed surface 54 of the cutting object 5 to apply pressure. The non-metal exposed surface 54 is coated, bonded, or the like to the base 51 with resin, ceramic, or the like. That is, the metal exposed surface 54 is more likely to break against compressive stress. Since there is no dislocation effect due to the intermediate 6, the applied substance in the vicinity of the cutting line is less likely to be damaged (cracked, cracked, tattered and collapsed). On the other hand, since the applied substance dislocations along the cutting line, the dislocation causes the metal foil to cause dislocation along the cutting line. Therefore, punching can be performed without destroying the structure of the applied substance.

  In summary, the intermediate body 6 is not brought into contact with the non-metal exposed surface 54. Although there is no contact with the intermediate body 6, the coating layer forming the non-metal exposed surface 54 plays the same role as the intermediate body 6. That is, when the pressure of the convex punch 21 is applied to the coating layer, dislocation occurs in the coating layer. When dislocation occurs in the coating layer, the dislocation also occurs in the thin metal plate or metal foil that is the expectation 51 inside the coating layer as it is. In this manner, the dislocation development allows cutting to reach the base 51 from the nonmetal layer 53 with a clean cutting line without causing the nonmetal layer 53, which is the coating layer, to collapse or wear out.

  That is, on the non-metal exposed surface 54, dislocation is connected from the non-metal layer 53 to the base 51 by the pressure of the convex punch 21, and cutting can be performed without causing wear or the like on the non-metal layer 53.

  As described above, on the metal exposed surface 52 where burrs and burrs are generated, the metal thin plate or the metal foil is cut using the dislocation of the intermediate 6, and on the non-metal exposed surface 54, the applied substance It is cut together with a thin metal plate or metal foil using the dislocation. By such cutting, the rotary cutter 1 can cut the cutting target 5 along the cutting shape that extends over the metal exposed surface 52 and the non-metal exposed surface 54 without causing any problems.

    (Cut shape)

  FIG. 6 is an explanatory diagram for explaining the cutting of the cutting object in the first embodiment of the present invention. The cutting object 5 shown in FIG. 6 has a metal exposed surface 52 and a non-metal exposed surface 54 mixed together. The cut shape 8 extends over the metal exposed surface 52 and the non-metal exposed surface 54. As shown in FIG. 6, the cutting shape 8 has a square shape straddled.

  The rotary cutter 1 cuts the cutting object 5 along the cutting shape 8 by the operation described above. By cutting, the cutting member 10 having the cut shape 8 is taken out. In this manner, the rotary cutter 1 generates the cutting member 10 from the cutting object 5.

  When the cutting object 5 is a material having a series of lengths and is continuously fed into the gap of the rotary cutter 1, the punch roll 2 and the die roll 3 are repeatedly rotated to cut one after another. The member 10 is obtained.

  Thus, the rotary cutter 1 can continuously generate the cutting member 10 by cutting the punch roll 2 and the die roll 3.

  Moreover, in FIGS. 1-6, although the square cut shape 8 was shown, the cut shape may be various. In short, the rotary cutter 1 according to the first embodiment has the metal exposed surface 52 and the nonmetal exposed surface in contact with the metal exposed surface 52 and the intermediate metal 6 not in contact with the nonmetal exposed surface 54. 54, the cutting object 5 can be reliably cut along the cutting shape 8 that spans 54.

  FIG. 7 is a front view showing a cutting object and a cutting shape in the first embodiment of the present invention. The rotary cutter 2 includes a convex punch 21 and a receiving portion 31 that match such a cutting shape 8, and can cut the cutting object 5 with the cutting shape 8 shown in FIG.

  The cut shape 8 shown in FIG. 7 extends over the metal exposed surface 52 and the non-metal exposed surface 54 while being continuously connected. Also in this case, the intermediate body 6 is brought into contact with only the metal exposed surface 52. Thereby, burrs and burrs on the metal exposed surface 52 and wear on the non-metal exposed surface 54 do not occur along the cutting line of the cut shape 8.

  As described above, the rotary cutter 1 according to the first embodiment is a cutting object in which the metal exposed surface 52 and the nonmetal exposed surface 54 are mixed, and the cutting shape spans the metal exposed surface 52 and the nonmetal exposed surface 54. 8 can be cut surely and without defects.

  (Embodiment 2)

  Next, a second embodiment will be described. In the second embodiment, various devices in the rotary cutter described in the first embodiment will be described.

(Feeding intermediate 6)
As described in the first embodiment, the cutting object 5 has the metal exposed surface 52 and the non-metal exposed surface 54 mixed. In addition, the cutting line by the cutting shape 8 extends over the metal exposed surface 52 and the non-metal exposed surface 54. The rotary cutter 1 cuts the cutting object 5 along the cutting shape 8 with the opposing pressure between the convex punch 21 and the receiving portion 31 during the rotation of the punch roll 2 and the die roll 3.

  Here, as described in the first embodiment, the intermediate body 6 is brought into contact with only the metal exposed surface 52 and fed into the gap between the punch roll 2 and the die roll 3.

  At this time, the intermediate body 6 may be mounted in advance on the metal exposed surface 52 of the cutting object 5. For example, the intermediate body 6 is mounted on the metal exposed surface 52 before the cutting object 5 is inserted into the gap between the punch roll 2 and the die roll 3. For the mounting, the intermediate body 6 may simply be matched with at least one of the front surface and the back surface of the exposed metal surface 52.

  At this time, the bonding may not be performed. The exposed metal surface 52 has very high surface smoothness due to the characteristics of the metal (or alloy). The intermediate body 6 is formed of a non-metallic material. Similarly, if the intermediate body 6 is formed of a material having high surface smoothness, the intermediate body 6 can contact the exposed metal surface 52 only by matching the surfaces. Further, during the movement of the gap between the punch roll 2 and the die roll 3 (the cutting object 5 in contact with the intermediate body 6 is moved while being pulled by the rotation of the punch roll 2 and the die roll 3). Does not have to leave the exposed metal surface 52.

  Thus, the cutting object 5 is fed into the gap between the punch roll 2 and the die roll 3 with the intermediate body 6 mounted in advance. By being mounted in advance, the labor for feeding the cutting object 5 is reduced.

  Alternatively, the intermediate body 6 is in an independent state from the cutting object 5, and when the intermediate body 6 is fed into the gap between the punch roll 2 and the die roll 3, the intermediate body 6 is aligned with the metal exposed surface 52 of the cutting object 5. May be. In this case, the intermediate body 6 is fed from the side close to the punch roll 2 and the cutting object 5 is fed from the side close to the die roll 3, so that the convex punch 21 and the receiving portion 31 face each other in the gap. The intermediate body 6 moves so as to be aligned with the exposed metal surface 52. At this time, the positional relationship between the intermediate 6 and the cutting object 5 may be reversed. As a result, when the convex punch 21 and the receiving portion 31 face each other and apply pressure, the intermediate body 6 is in contact with the metal exposed surface 52.

  FIG. 8 is a side view of the rotary cutter according to Embodiment 2 of the present invention. In FIG. 8, as described above, the intermediate body 6 and the cutting object 5 are sent into the gap in a separated state. The state in which the intermediate body 6 and the cutting object 5 are in contact with each other in the gap and the intermediate body 6 is in contact with the surface of the metal exposed surface 52 is realized.

  In this way, the intermediate body 6 and the cutting object 5 come into contact with each other in the gap while being fed individually, so that the work effort can be reduced.

(Intermediate properties)
The intermediate body 6 contacts only the metal exposed surface 52. Here, as described above, the intermediate body 6 is preferably a non-metallic resin, paper, or ceramic. Since it is the role of the intermediate body 6 that is liable to cause linear dislocations due to the contact pressure at the outer periphery of the convex punch 21 and to prevent burrs and burrs in the cutting line of the metal exposed surface 52, Preferably there is.

  Moreover, it is also suitable that the intermediate body 6 is thicker than the thickness of the cutting object 5. By being thicker than the thickness of the object 5 to be cut, the amount of dislocation can be increased, and the metal foil portion is surely caused to dislocation, and the cutting is ensured. Further, burrs and burrs are less likely to occur along the cutting line.

  Further, it is preferable that the width of the intermediate body 6 is not less than the width of the convex punch 21 overlapping the metal exposed surface 52 and not more than the maximum width of the metal exposed surface 52.

  FIG. 9 is a front view showing an object to be cut and an intermediate in Embodiment 2 of the present invention. FIG. 9 shows a state in which the intermediate body 6 is mounted so as to contact the metal exposed surface 52 of the cutting object 5. Here, the intermediate body 6 should just be mounted | worn corresponding to the cut part (namely, cutting shape) in the metal exposed surface 52. FIG. In other words, the intermediate body 6 does not have to be attached in the region where the cutting line does not reach even the exposed metal surface 52.

  For this reason, the width of the intermediate body 6 may be not less than the width of the convex punch 21 overlapping the metal exposed surface 52 and not more than the maximum width of the metal exposed surface 52. The intermediate body 6 shown in FIG. 9 is within this width range. In the range of this width, the intermediate body 6 is attached to the portion corresponding to the convex punch 21. As a result, the cutting by the convex punch 21 on the metal exposed surface 52 is performed reliably and without a defect.

  Further, since the width of the intermediate body 6 does not cover the entire maximum width of the exposed metal surface 52, there is an advantage that the material cost of the intermediate body 6 can be saved.

(Intermediate insertion setting)
Further, it is appropriate that the intermediate body 6 is in contact with the metal exposed surface 52 and is not in contact with the non-metal exposed surface 54. For this reason, it is necessary to feed the intermediate body 6 into the gap between the punch roll 2 and the die roll 3 so as to ensure that the intermediate body 6 contacts only the metal exposed surface 52.

  For this reason, it is also appropriate to further include a setting device for inserting the intermediate body 6 into the gap so that the intermediate body 6 contacts only the metal exposed surface 52. FIG. 10 is a schematic diagram of a rotary cutter according to Embodiment 2 of the present invention.

  In FIG. 10, the rotary cutter 1 includes a setting device 11. The setting device 11 corresponds to the boundary between the metal exposed surface 52 and the non-metal exposed surface 54 in the cutting object 5 fed into the gap of the rotary cutter 1. The setting device 11 sends the intermediate body 6 into the gap so that the ends are aligned with this boundary.

  In FIG. 10, the setting device 11 is provided with a pair of members 110 and 111 at positions where both ends of the intermediate body 6 are aligned. The paired members 110 and 111 align both ends of the intermediate body 6 so that the fed intermediate body 6 can be adjusted so as to contact only the metal exposed surface 52. In addition, the interval between the members 110 and 111 that form a pair of the setting device 11 may be adjusted by the width of the intermediate body 6. By being adjusted, regardless of the width of the intermediate body 6, the setting device 11 can send the intermediate body 6 into the gap so as to contact only the metal exposed surface 62.

  The paired members 111 constituting the setting device 11 are fixed so as to coincide with the boundary between the metal exposed surface 52 and the non-metal exposed surface 54. On the other hand, since the member 110 should just be matched with the width | variety of the intermediate body 6, you may change a position.

  Such a setting device 11 ensures that the intermediate body 6 contacts only the metal exposed surface 52.

  As described above, the rotary cutter 1 according to the second embodiment can cut the cutting object 5 in which the metal exposed surface 52 and the non-metal exposed surface 54 are mixed in a predetermined cut shape without fail. it can.

  As mentioned above, the rotary cutter demonstrated by Embodiment 1-2 is an example explaining the meaning of this invention, and includes the deformation | transformation and remodeling in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Rotary cutter 2 Punch roll 21 Convex punch 22 Rotating shaft 3 Die roll 31 Receiving part 32 Rotating shaft 4 Rotation control part 41 Feed roll 5 Cutting object 51 Base body 52 Metal exposed surface 53 Non-metal layer 54 Non-metal exposed surface 6 Intermediate 11 Setting device

Claims (10)

A punch roll having a convex punch on the surface and rotatable in a first direction;
A die roll that has a receiving portion that is paired with the convex punch on the surface and is rotatable in a second direction opposite to the first direction;
A rotation control unit that rotates at least the punch roll and the die roll with respective rotation shafts,
The outer periphery of the convex punch and the receiving part corresponds to the cutting shape of the cutting object,
The rotation control unit sends the cutting object together with an intermediate body in contact with at least one of the front surface and the back surface of the cutting object into the gap between the punch roll and the die roll,
The surface of the cutting object has a mixed metal exposed surface and a non-metal exposed surface, and the intermediate body is in contact with only the metal exposed surface. The convex punch and the receiving portion are arranged to face each other so as to sandwich the cutting object passing through the gap by the rotation of the punch roll and the die roll,
The outer periphery of the convex punch and the outer periphery of the receiving portion are opposed to each other and apply pressure to the cutting object, thereby cutting the cutting object along a cutting line formed by the outer periphery. The rotary cutter according to 1. The object to be cut has a base formed on at least one of a metal and an alloy, and a non-metal layer formed on at least a part of the front and back surfaces of the base,
3. The rotary cutter according to claim 1, wherein the non-metal layer is the non-metal exposed surface, and other than the non-metal layer is the metal exposed surface.   The rotary cutter according to claim 3, wherein the non-metallic layer is formed on the substrate by at least one of application, plating, and adhesion.   The rotary cutter according to any one of claims 1 to 4, wherein the intermediate body is mounted in advance on the metal exposed surface of the cutting object.   The rotary cutter according to any one of claims 1 to 4, wherein the intermediate body is fed into the gap together with the cutting object in accordance with the exposed metal surface.   The rotary cutter according to claim 1, wherein the intermediate is thicker than the cutting object.   The rotary cutter according to claim 7, wherein a width of the intermediate body is not less than a width of the convex punch overlapping the exposed metal surface and not more than a maximum width of the exposed metal surface.   The rotary cutter according to claim 1, further comprising a setting device that is inserted into the gap so that the intermediate body contacts only the exposed metal surface. A punch roll having a convex punch on the surface and rotatable in a first direction;
A die roll having a receiving part paired with the punch roll on the surface and rotatable in a second direction opposite to the first direction;
A rotary cutter comprising a rotation control unit that rotates the punch roll and the die roll with respective rotation axes, and a cutting method for cutting a cutting object,
The outer periphery of the convex punch and the receiving part corresponds to the cutting shape of the cutting object,
The rotation control unit sends the cutting object together with an intermediate body in contact with at least one of the front surface and the back surface of the cutting object into the gap between the punch roll and the die roll,
The cutting object has a surface in which a metal exposed surface and a non-metal exposed surface are mixed, and the intermediate body is in contact with only the metal exposed surface.