JPWO2010013818A1 - Thin plate shearing method - Google Patents

Abstract

In order to provide a thin plate shearing method capable of shearing a thin plate with high quality without narrowing the clearance by precision machining the die, a non-cutting die 2 and a punch 3 having a shearing hole 2a are provided between the die 2 and the punch 3. In the thin plate shearing method in which the thin plate 1 having at least one metal layer 1b is disposed and the thin plate 1 is sheared by relatively moving the punch 3 toward the shearing hole 2a, the punch 3 penetrates the thin plate 1. Thus, before the fitting into the shearing hole 2a, the relative movement of the punch 3 is stopped and the shearing is finished.

Description

  The present invention relates to a thin plate shearing method for forming a product by shearing a thin plate having a thickness of approximately 0.5 mm or less and having a non-metal layer laminated on one or both sides of a metal layer, or a thin metal plate.

  The most common method for forming a product from a thin plate is to punch the thin plate with a die (punch and die).

  In this punching method, a processed plate material (thin plate) is placed on a die having a punching hole, the punch disposed above the punching hole is lowered, and the tip of the punch is fitted into the punching hole. The processed plate material is sheared. In some cases, the punch and the die are turned upside down so that the punch is arranged below the die, or the die is moved instead of the punch.

  Many researches have been made on the processing conditions. For example, Non-Patent Document 1 describes the appropriateness of the plate thickness of a plate to be processed and the clearance between the punch and die (punching hole) for punching it, that is, the clearance. The relationship is shown. According to this, about 5 to 10% of the plate thickness of the plate material to be processed is regarded as an appropriate clearance.

  According to the relation between the plate thickness of the plate material to be processed and the clearance, the clearance is about 50 to 100 μm when the plate thickness of the plate material to be processed is 1 mm. However, when the plate thickness of the plate material to be processed is 20 μm, for example, the appropriate clearance is 1 to 2 μm, and there is a problem that high-precision manufacturing of the mold is required and high technology is required for manufacturing, and the price is also increased.

  Furthermore, another problem arises when a die is manufactured with a narrow clearance and punched. One of them is a decrease in life due to wear of the punch and die. That is, if the clearance is narrow, the punch and the die often come into contact with each other in the range of elastic deformation, and wear increases. Further, if the punch and the die come into contact and deform beyond the elastic deformation range, a problem of chipping also occurs.

  Another major problem is the problem of small debris generated from the processed plate material due to punching. This problem becomes prominent when the processed plate material is a laminated plate of a metal layer and a non-metal layer. Scratches generated from the plate material to be processed are sandwiched between the punch and the die and cause various problems that a large force is required for punching and frequent cleaning is required. Furthermore, the mold may be damaged.

  Further, the conventional punching method has another problem. That is, if the punching of the plate material to be processed, particularly the metal plate, proceeds with the die, it tends to adhere to the punch due to the plate material to be processed. This adhesion problem can be prevented to some extent by coating the punch and die with ceramics or DLC (diamond-like carbon), but in a mold with a narrow clearance, friction caused by sliding between the punch and the die. Is large, and only a temporary effect can be obtained.

  As another problem, the quality of the outer edge of the processed plate material (product part) after being punched is deteriorated. This is because, after the plate material to be processed is punched out, it goes to the punch dead center while rubbing against the inner surface of the die and keeps rubbing for a long time until it leaves the die.

  As described above, in the conventional shearing by punching, various problems have occurred particularly when the plate thickness of the processed plate material is reduced.

Akira Hashimoto, “New work of press work and mold work”, 7th edition, Nikkan Kogyo Shimbun, April 30, 1975, p35

  The present invention has been made in view of the above-mentioned problems of conventional shearing by punching, and the problem is that a thin plate can be sheared with high quality over a long period of time, and the precision machining of the mold to be used is not necessarily required. It is another object of the present invention to provide a method capable of shearing a thin plate very well at low cost in both apparatus and process.

  As a result of repeated research on the thin plate shearing process, the present inventor, in the case of a thin plate with a non-metal layer laminated on one or both sides of the metal layer, the punch penetrates the thin plate and fits into the shearing hole of the die. It was found that the thin plate was completely sheared in the previous stage.

  The present invention has been made on the basis of this finding. A thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer is disposed between a die having a shearing hole and a punch, and the punch is relatively punched. In the thin plate shearing method in which the thin plate is sheared by moving it toward the shearing hole, the relative movement of the punch is stopped before the punch passes through the thin plate and is fitted into the shearing hole. The shearing is finished.

  In this way, in the present invention, since the punch does not fit into the die, it is not necessary to adjust the clearance strictly as in the conventional punching method in which the punch is fitted to the die, and of course the normal plus clearance, Zero clearance or negative clearance with a larger punch diameter may be used. That is, in the present invention, it is not necessary to precisely process the mold (punch and die) and adjust the clearance strictly, the mold can be easily manufactured, and the manufacturing cost can be reduced.

  Further, since the punch does not fit into the die, the punch and the die are not easily worn, and the life of the mold is prolonged. Furthermore, there is little movement of the plate material to be processed after shearing, and accordingly, generation of scraps is reduced. Further, in the conventional method, there is a problem that the metal part of the plate material to be contacted adheres as the punch moves up and down. It is difficult to remove the adhered metal component, and if it is rubbed or removed with chemicals, the punch will be scratched, the surface roughness will increase, or the surface will deteriorate due to corrosion. Moreover, since this phenomenon occurs every 100 shots even if it is long and only 5 to 10 shots if it is short, productivity is significantly impaired. In the method of the present invention, since it is possible to perform shearing without bringing the punch into direct contact with the metal portion in the processed plate material, it is possible to prevent the processed plate material from adhering to the punch.

  Therefore, it is necessary to produce a mold that can maintain the state of shearing in good condition and can shear a thin plate with high quality, but is difficult to manufacture as a mold and has a high clearance, which has a high clearance. There is no need for high cost for mold production.

  In the technical field of punching, there is known a method of punching a processed plate material by first half-punching in one direction and then punching it back in the opposite direction instead of punching the processed plate material by a single punching operation. However, the shearing method of the present invention is the above-described method in that the plate material to be processed is completely sheared by a single shearing operation (see Japanese Patent Application Laid-Open No. 2004-167547 and Japanese Patent Application Laid-Open No. 2001-300647). This is essentially different from the half-punch / pull-out prior art.

  In the present invention, the punch is preferably stopped at a position not less than the thickness of the metal layer and not more than the total thickness of the non-metal layer with respect to the thickness of the thin plate. If the punch stop position is less than the thickness of the metal layer, there is a high possibility that punching of the thin plate will not be completed. On the other hand, if the total thickness of the non-metallic layer is exceeded, the occurrence of chipping of the punch and die, the generation of chips, and the welding of the punch and the sheet metal component are observed, and the effects of the present invention are sufficiently obtained. There may not be.

  Further, according to the experiment by the present inventor, it was found that the shearing method of the present invention can be applied even when a plurality of thin plates are stacked. In this case, a plurality of thin plates are arranged between the punch and the die, and the shearing is finished by stopping the relative movement of the punches before the punch passes through all the thin plates and fits into the shearing hole. . Thereby, since a plurality of thin plates can be sheared simultaneously, productivity is improved. In addition, when using a plurality of thin plates originally, such as an electrode plate of a lithium ion battery, the step of laminating after processing may be omitted by simultaneously shearing the plurality of thin plates. it can. However, the maximum number of sheets that can be sheared simultaneously is about 10 in terms of the quality of the cut surface of the processed plate material. Beyond this, the cut surface gradually begins to roughen, making it difficult to use in fields where high quality is required. When multiple sheets are stacked and sheared simultaneously, the punch is equal to or greater than the total thickness of the metal layers relative to the total thickness of the stacked sheets (the total thickness of the metal layers in the stacked sheets). And it is preferable to stop at a position equal to or less than the total thickness of the non-metal layers (the total thickness of the non-metal layers in the stacked thin plates).

  The shearing method of the present invention can be applied not only to the above-described shearing with a punch and die, but also to shearing with a die cutter and an anvil roll. That is, a non-metal layer is provided on one or both sides of a metal layer between a die cutter having a convex pressing blade on the surface and an anvil roll having a shearing recess at a position corresponding to the convex pressing blade. When the thin plate is sheared by inserting the laminated thin plate and rotating the die cutter's convex pressing blade into the shearing recess of the anvil roll, the die cutter's convex pressing blade is passed through the thin plate. Furthermore, the thin plate is sheared without being fitted into the recess for shearing of the anvil roll. This shearing method also has the same effect as the above-described shearing method using a punch and a die. That is, the thin plate is completely sheared before the convex pressing blade of the die cutter penetrates the thin plate and fits into the recess for shearing of the anvil roll.

  In this shearing method using a die cutter and an anvil roll, it is preferable that the convex cutting blade of the die cutter is advanced to a position that is not less than the thickness of the metal layer and not more than the total thickness of the nonmetal layer with respect to the thickness of the thin plate.

  Further, in the shearing method using a die cutter and an anvil roll, in order to shear a thin plate as a processed plate material more reliably, an intermediate plate having at least one non-metal layer may be inserted between the thin plate and the die cutter. it can. By using the intermediate plate in this way, the thin plate can be more reliably sheared by the indentation effect due to the plastic flow of the intermediate plate. In this case, it is preferable that the convex pressing blade of the die cutter is advanced to a position not less than the total thickness of the thin metal plate and the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate. .

  Moreover, in this invention, it can replace with the die cutter which provided the convex pressing blade on the surface, and can also use the press roll which does not provide the convex pressing blade on the surface. That is, a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer is inserted between a pressing roll and an anvil roll provided with a recess for shearing, and the thin plate is sheared by the pressing roll. When the thin plate is sheared by being pushed into the concave portion, an intermediate plate having at least one non-metal layer is inserted between the thin plate and the die cutter, and the thin plate is inserted into the shearing concave portion of the anvil roll. Shear without pushing beyond the thickness of the. In this case, the thin plate is completely sheared before the thin plate is completely pushed into the shearing recess of the anvil roll. In this case, it is preferable that the thin plate is pushed into the recess for shearing processing of the anvil roll to a position not less than the thickness of the metal layer and not more than the thickness of the non-metal layer of the thin plate.

  Even in such a shearing method using a die cutter or a pressing roll and an anvil roll, by simultaneously inserting a plurality of thin plates between the die cutter or the pressing roll and the anvil roll, the plurality of stacked thin plates can be sheared simultaneously. Can do. Specifically, when using a die cutter, a plurality of thin plates are inserted between the die cutter and anvil roll, and the convex cutter of the die cutter does not penetrate the entire thin plate, and the anvil roll All of the thin plate is sheared without being fitted into the shearing recess. In this case, it is preferable to make the convex pressing blade of the die cutter enter a position not less than the total thickness of the metal layer and not more than the total thickness of the non-metal layer with respect to the total thickness of the stacked thin plates. In addition, when using an intermediate plate, the total thickness of the thin metal plate and the intermediate plate is equal to or greater than the total thickness of the metal layers of the thin plate and the total thickness of the thin non-metal layer and the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate. It is preferable to make the convex pressing blade of the die cutter enter the position.

  When using a press roll, a plurality of thin plates are inserted between the press roll and the anvil roll, and at least one non-metal layer is interposed between the stacked thin plates and the press roll. The plate is inserted, and the plurality of stacked thin plates are sheared without being pushed into the shearing recess of the anvil roll beyond the total thickness of the plurality of stacked thin plates. In this case, a plurality of stacked thin plates are pushed into a shearing recess of the anvil roll to a position not less than the total thickness of the stacked metal plates and not more than the total thickness of the stacked non-metal layers. It is preferable.

  In this invention, when using a press roll, it can coat | cover the layer which has at least one layer of a nonmetallic layer on the surface of a press roll instead of using an intermediate | middle board. Specifically, a non-metallic layer was laminated on one or both sides of a metal layer between a pressing roll coated with a layer having at least one non-metallic layer on the surface and an anvil roll provided with a recess for shearing. When the thin plate is sheared by inserting a thin plate or a metal thin plate and pressing the thin plate into the shearing recess of the anvil roll by a pressing roll, the thin plate is inserted into the shearing recess of the anvil roll. Shear without pushing beyond the thickness. In this case, it is preferable to push the thin plate into the shearing recess of the anvil roll to a position not less than the thickness of the metal layer and not more than the thickness of the non-metal layer of the thin plate. In this configuration, when a plurality of thin plates are inserted and sheared, the plurality of thin plates are sheared without being pushed into the anvil roll shear recess without exceeding the total thickness of the plurality of thin plates. To do. Preferably, a plurality of stacked thin plates are pushed into a shearing recess of the anvil roll to a position equal to or greater than the total thickness of the plurality of stacked thin metal layers and not more than the total thickness of the stacked non-metallic layers.

  As described above, the shearing method of the present invention is applied to a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer as described above, but the shearing method of the present invention is also applied to shearing a metal thin plate. Is possible. That is, when a die and a punch are used, a metal thin plate is disposed between the die having a shearing hole and the punch, and the punch is relatively moved toward the shearing hole to thereby move the metal. In the thin plate shearing method for shearing a thin plate made of metal, an intermediate plate having at least one non-metal layer is disposed between the metal thin plate and the punch, and the punch is inserted before the punch penetrates the intermediate plate. Relative movement is stopped and shearing of the metal sheet is finished. In this case, it is preferable that the relative movement of the punch is stopped at a position not less than the thickness of the thin plate and not more than the thickness of the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate.

  When using a die cutter and an anvil roll, a metal cutter is provided between a die cutter having a convex pressing blade on the surface and an anvil roll having a shearing recess at a position corresponding to the convex pressing blade. When the thin plate is sheared by inserting the thin plate and rotating and pressing the convex cutter blade of the die cutter into the shearing recess of the anvil roll, at least one non-metal layer is interposed between the thin plate and the die cutter. The thin plate is sheared without inserting the intermediate plate having the convex cutter blade of the die cutter through the intermediate plate and without being fitted into the shearing concave portion of the anvil roll. In this case, it is preferable to make the convex pressing blade of the die cutter enter a position not less than the thickness of the thin plate and not more than the thickness of the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate.

  When using a pressure roll and an anvil roll, a metal thin plate is inserted between the pressure roll and the anvil roll provided with the shearing recess, and this thin plate is used as a shearing recess for the anvil roll by the press roll. When shearing the thin plate by pushing, an intermediate plate having at least one non-metal layer is inserted between the thin plate and the die cutter, and the thin plate is inserted into the shearing recess of the anvil roll. Shear without pushing beyond. In addition, a metal thin plate is inserted between a pressing roll whose surface is coated with a layer having at least one non-metal layer and an anvil roll provided with a recess for shearing, and the thin plate is sheared by the pressing roll. When the thin plate is sheared by being pushed into the processing recess, the thin plate can be sheared without being pushed into the shearing recess of the anvil roll beyond the thickness of the thin plate.

  Among the shearing methods of the present invention described above, when using a die cutter or a press roll and an anvil roll and using an intermediate plate, the intermediate plate is made endless so that the intermediate plate can be used repeatedly, and the intermediate plate Can be inserted between the thin plate and the die cutter or the pressing roll, then passed between the rolls and pressed, and then inserted again between the thin plate and the die cutter or the pressing roll.

  Moreover, in this invention, what formed the peripheral part of the recessed part for shear processing with the material whose hardness is higher than another part can be used as an anvil roll. As a result, chipping or the like of the peripheral edge portion of the shearing concave portion that becomes the shearing portion can be prevented, and shearing can be performed reliably.

  Furthermore, a notch can also be provided in the rotation direction of the recessed part for shear processing of an anvil roll at predetermined intervals. Accordingly, it is possible to prevent the thin plate from being excessively pressed and damaged before and after the rotational direction of the recess for shearing.

  According to the shearing method of the present invention, a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer, or a metal thin plate can be sheared with a high quality over a long period of time. Since it can be manufactured at a relatively low cost, the thin plate can be sheared at high quality and at low cost.

The basic process of the shearing method of this invention is shown. Another embodiment of the present invention will be described. Still another embodiment of the present invention will be described. Still another embodiment of the present invention will be described. A modification of the embodiment of FIG. 4 is shown. Still another embodiment of the present invention will be described. The example of the shape of the convex cutting blade of a die cutter is shown, (b) is the AA cross section of (a), (d) is the BB cross section of (c), (f) is CC of (e). A cross section is shown. Still another embodiment of the present invention will be described. A modification of the embodiment of FIG. 8 is shown. Still another embodiment of the present invention will be described. Still another embodiment of the present invention will be described. Still another embodiment of the present invention will be described.

  Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.

FIG. 1 is an explanatory view showing the basic steps of the shearing method of the present invention.
In the embodiment of FIG. 1, the plate material 1 is an electrode plate of a lithium ion battery in which active materials (non-metal layers) 1b are laminated on both surfaces of a metal layer 1a made of copper or aluminum. The thickness of the metal layer 1a is 20 μm and the non-metal layer 1b is 80 μm, which is 180 μm in total.

  As shown to Fig.1 (a), this to-be-processed board | plate material 1 is mounted and fixed on the die | dye 2 which has the hole 2a for shearing. And as shown in FIG.1 (b), the to-be-processed board | plate material 1 is sheared by dropping the punch 3 arrange | positioned above the hole 2a for shearing.

  In the example, the punch 3 was stopped when the punch 3 was lowered to a position of 30 μm after the punch 3 contacted the surface of the workpiece 1, that is, a position of 17% of the plate thickness of the workpiece 1. As a result, it was confirmed that the processed plate material 1 was completely sheared. The product portion of the sheared plate material that has been sheared can be easily taken out by pressing or adsorbing the portion from above or below. In the examples, the punch-die clearance was 10 μm. 10 μm is a value that does not require any particular difficulty in manufacturing the mold.

  As described above, in this embodiment, since the punch plate 3 is sheared without the punch 3 being in direct contact with the metal layer 1a in the center of the workpiece plate 1, the metal from the metal layer 1a is condensed on the punch 3. It does not adversely affect the shearing process. Further, the problem of surface roughness of the shear surface does not occur.

  In the embodiment of FIG. 1, an example of shearing the processed plate material 1 in which the non-metal layer 1 b is laminated on both surfaces of the metal layer 1 a is shown, but the processed plate material in which the non-metal layer is laminated on one side of the metal layer Shearing is possible as well. In this case, it is preferable that the punch is brought into contact with the nonmetallic layer with the nonmetallic layer facing upward.

  In the embodiment shown in FIG. 1, the punch 3 is disposed above the die 2, but the punch may be disposed below the die by turning upside down. Further, in the embodiment of FIG. 1, the punch 3 is moved up and down, but the die 2 may be moved up and down.

  FIG. 2 shows another embodiment of the present invention. In this embodiment, a plurality of processed plate materials are stacked and sheared.

  The plate material 1 to be processed was an electrode plate of a lithium ion battery having the same plate thickness of 180 μm as in the previous example, and eight sheets thereof were stacked. That is, the overall thickness of the processed plate material 1 is 1.44 mm.

  In the embodiment, with respect to the plate material 1 to be stacked 8 sheets, the punch 3 comes into contact with the surface of the plate material 1 at a position of 200 μm, that is, 14% of the total thickness of the plate material 1 to be stacked 8 sheets. When the punch 3 was lowered to the position, the punch 3 was stopped. As a result, it was confirmed that all the eight processed plate materials 1 were completely sheared.

  FIG. 3 shows still another embodiment of the present invention. In this embodiment, a metal thin plate is sheared by using a punch and a die.

  First, as shown in FIG. 3A, a metal thin plate is placed on the die 2 as the processed plate material 7, and the intermediate plate 8 having at least one non-metal layer on the processed plate material 7. Is placed. In the example, the processed plate material 7 was a titanium plate having a thickness of 20 μm, and the intermediate plate 8 was a polypropylene plate having a thickness of 150 μm. The material of the intermediate plate 8 is polypropylene, acrylic resin, PET, polycarbonate, bakelite, plastic, fluororesin, epoxy resin, polyurethane, polyvinyl chloride, polyamide, polyethylene, vinyl chloride, hard rubber, paper, glass plate, asphalt In addition, a non-metal layer such as a synthetic fiber can be used, and a laminate material of these non-metal layers or a laminate material of these non-metal layers and metal layers can also be used.

  As shown in FIG. 3 (b), the processed plate material 7 is sheared by lowering the punch 3 arranged above the die shearing hole 2a.

  In the embodiment, the position of 40 μm after the punch 3 contacts the surface of the intermediate plate 8, that is, the thickness of the processed plate material 7 (metal thin plate) is not less than the thickness of the intermediate plate 8, The punch 3 was stopped when the punch 3 was lowered to a position not penetrating the intermediate plate 8. As a result, it was confirmed that the processed plate material 7 was completely sheared. The product portion of the sheared plate material that has been sheared can be easily taken out by pressing or adsorbing the portion from above or below.

  When the metal thin plate is sheared via the intermediate plate 8 as in this embodiment, the punch 3 comes into contact with the surface of the intermediate plate 8 and is at least the same distance as the thickness of the metal thin plate, and at the maximum the punch. 3 is preferably stopped at a stage before passing through the intermediate plate 8. In other words, it is preferable that the penetration depth after the punch 3 comes into contact with the surface of the intermediate plate 8 is not less than the thickness of the plate material (metal thin plate) and not more than the thickness of the intermediate material. In this case, it is premised that the thickness of the intermediate plate is larger than the thickness of the processed plate material (metal thin plate).

  FIG. 4 shows still another embodiment of the present invention. This embodiment is an example in which the present invention is applied to a shearing method using a die cut roll including a die cutter and an anvil roll. The plate material to be processed is the same as in the first embodiment.

  As shown in FIG. 4, a convex pressing blade 4 a is provided on the surface of the die cutter 4 at a position corresponding to the shearing recess 5 a of the anvil roll. Then, the processed plate material 1 is inserted between the die cutter 4 and the anvil roll 5 that rotate in the direction of the arrow, respectively, and the convex pressing blade 4a of the die cutter is rotated and pressed into the concave portion 5a of the anvil roll, thereby the processed plate material 1 Shear.

  In this shearing step, as shown in FIG. 4, in this shearing process, the convex pressing blade 4 a of the die cutter is processed without penetrating the processed plate material 1 and without being fitted into the concave portion 5 a of the anvil roll. The plate 1 is sheared. In the example, the convex pressing blade 4 a was brought close to the position of 20 μm from the surface of the workpiece plate 1, that is, to the position of 11% of the plate thickness of the workpiece 1. As a result, it was confirmed that the processed plate material 1 was completely sheared in the same manner as in Example 1 above. The product portion of the sheared plate material that has been sheared can be easily taken out by pressing or adsorbing the portion from above or below.

  Although not shown in the drawing, the two stacked plate materials 1 are inserted between the die cutter 4 and the anvil roll 5, and the position of 130 μm from the surface of the processed plate material 1, that is, the entire two stacked plate materials 1. When the convex cutting blade 4a of the die cutter was entered to a position of 36% of the thickness, it was confirmed that all of the eight processed plate materials 1 were completely sheared as in the second embodiment. It was.

  In the embodiment of FIG. 4, an example of shearing the processed plate material 1 in which the non-metal layer 1 b is laminated on both surfaces of the metal layer 1 a is shown, but the processed plate material in which the non-metal layer is laminated on one side of the metal layer is shown. Shearing is possible as well. In this case, it is preferable to bring the non-metal layer into contact with the die cutter 4.

  FIG. 5 shows a modification of the embodiment of FIG. In the example of FIG. 5, the intermediate plate 6 having at least one non-metal layer is inserted between the workpiece plate 1 and the die cutter 4. In this way, by interposing the intermediate plate 6, the processed plate material 1 can be more reliably sheared by the pushing effect due to the plastic flow of the intermediate plate 6.

  Specifically, as the intermediate plate 6, acrylic resin, PET, polycarbonate, bakelite, plastic, fluororesin, epoxy resin, polyurethane, polyvinyl chloride, polyamide, polyethylene, polypropylene, vinyl chloride, hard rubber, paper, glass plate, A non-metal layer such as asphalt or synthetic fiber can be used, and a laminate of these non-metal layers or a laminate of these non-metal layers and metal layers can also be used.

  FIG. 6 shows still another embodiment of the present invention. In this embodiment, a metal thin plate is sheared using a die cutter and an anvil roll.

  As shown in FIG. 6, a convex pressing blade 4 a is provided on the surface of the die cutter 4 at a position corresponding to the shearing recess 5 a of the anvil roll. In this configuration, a thin metal plate is inserted between the die cutter 4 and the anvil roll 5 that rotate in the direction of the arrow as the processed plate material 7, and a non-metallic layer is provided between the processed plate material 7 and the die cutter 4. The intermediate plate 6 having at least one layer is inserted. Then, the convex cutting blade 4a of the die cutter is rotated and pressed to the concave portion 5a of the anvil roll, and the processed plate material 7 is pressed to the concave portion 5a of the anvil roll through the intermediate plate 6 by the convex pressing blade 4a of the die cutter 4. As a result, the processed plate material 7 is sheared. In this shearing step, the processed plate material 7 is sheared without causing the convex pressing blade 4a of the die cutter to penetrate the intermediate plate 6 and the processed plate material 7 and without fitting into the concave portion 5a of the anvil roll.

  In addition, when shearing the processed plate material 7 (metal thin plate) via the intermediate plate 6 by the die cut roll as in the present embodiment, the die cutter 4 and the anvil roll 5 are The interval (gap) is such that the depth of protrusion of the processed plate material (metal thin plate) and the intermediate plate into the shearing recess 5a of the anvil roll is not less than the thickness of the processed plate material and not more than the thickness of the intermediate plate. It is preferable to set so. In other words, the distance (gap) between the die cutter 4 and the anvil roll 5 is equal to or less than [(the thickness of the plate material to be processed + the thickness of the intermediate plate) −the thickness of the plate material to be processed] and is equal to or greater than the thickness of the plate material to be processed. preferable. In this case, it is premised that the thickness of the intermediate plate is larger than the thickness of the processed plate material (metal thin plate).

  In Examples 4 and 5 using the die cutter 4 and the anvil roll 5 described above, the contour shape of the convex cutting blade 4a of the die cutter is the contour of the concave portion 5a for shearing the anvil roll according to the experiments of the present inventors. It is preferable to make it the same as or slightly larger than the shape. Specifically, when the length of one side of the outer shape of the convex pressing blade 4a is A and the length of one side of the outer shape of the corresponding recess 5a for shearing is B as shown in FIG. 4, B ≦ A It is preferable to satisfy ≦ 1.1B. The reason is that if A is smaller than B, burrs and the like are likely to occur at the sheared portion, and the quality of the sheared surface is deteriorated. On the other hand, when A is larger than 1.1B, the pressing portion is widened, and the portion for pressing the processed plate material is widened, so that the quality of the processed plate material is deteriorated.

  Next, the shape of the convex pressing blade 4a of the die cutter used in the present invention will be described. Usually, in the case of shearing with a die cutter, the convex cutting blade 4a of the die cutter projects only the outer portion as shown in FIGS. 7 (a) and 7 (b), and the tip thereof has an acute angle shape. In the invention, since it is a processing method using shearing, it is not always necessary to have an acute-angled tip shape as shown in FIGS. 7 (a) and 7 (b), as shown in FIGS. 7 (c) and 7 (d). It is also possible to make the whole project and make the tip perpendicular, or project the whole as shown in FIGS. 7E and 7F to make the tip obtuse. Further, as shown by broken lines in FIGS. 7D and 7F, the tip may be R-processed.

  FIG. 8 shows still another embodiment of the present invention. In this embodiment, shearing is performed using a pressing roll and an anvil roll. The processed plate material 1 is the same as that of the first embodiment.

  As shown in FIG. 8, the convex pressing blade is not formed on the surface of the pressing roll 9, and the surface is smooth. And the surface of the anvil roll 5 which opposes this press roll 9 is provided with the recessed part 5a for a shearing process according to the shape of the product which should be cut | disconnected. In this configuration, the work plate 1 is inserted between the press roll 9 and the anvil roll 5 that rotate in the direction of the arrow, respectively, and the intermediate plate has at least one non-metallic layer between the work plate 1 and the press roll 9. 6 is inserted.

  And the to-be-processed board | plate material 1 is sheared by pushing the to-be-processed board | plate material 1 in the recessed part 5a for shearing of an anvil roll with the press roll 9. FIG. In this shearing process, the processed plate material 1 is sheared without being pushed into the shearing recess 5a of the anvil roll beyond the thickness of the processed plate material 1. Specifically, the processed plate material 1 is pushed into the shearing recess 5a of the anvil roll to a position not less than the thickness of the metal layer 1a and not more than the thickness of the non-metal layer 1b of the processed plate material 1. Actually, it was confirmed that the processed plate material 1 was completely sheared when the processed plate material 1 was sheared by being pushed into the shearing recess 5a of the anvil roll by 20 μm.

  Although not shown, the two stacked plate materials 1 are inserted between the pressing roll 9 and the anvil roll 5 so that the two stacked plate materials 1 are pushed into the anvil roll shear recess 5a by 80 μm. As a result of the shearing, it was confirmed that all of the two processed plate materials 1 were completely sheared.

  FIG. 9 shows a modification of the embodiment of FIG. In the example of FIG. 9, a thin metal plate is sheared as the processed plate material 7. That is, the processed plate material 7 is sheared by pressing the processed plate material 7 by the pressing roll 9 through the intermediate plate 6 to the concave portion 5a of the anvil roll.

  Specifically, the processed plate material 7 was made of aluminum foil having a thickness of 20 μm, and the intermediate plate 6 was made of PET resin having a thickness of 500 μm. And the space | interval (gap) between the press roll 9 and the anvil roll 5 was set so that it might be set to 500 micrometers. As a result, it was confirmed that the processed plate material 7 was completely sheared.

  FIG. 10 shows still another embodiment of the present invention. In the example of FIG. 5, FIG. 6, FIG. 8 and FIG. 9 described above, the intermediate plate 6 inserted between the plate material 1 (7) to be processed and the die cutter 4 or the pressing roll 9 is made disposable. In the example, the intermediate plate 6 can be used repeatedly.

  Specifically, as shown in FIG. 10, the intermediate plate 6 is made endless, and the intermediate plate 6 is inserted between the workpiece plate 1 (7) and the die cutter 4 and used for shearing, and then rolls 10, 10. The sheet is passed through and pressed, and then inserted again between the processed plate material 1 (7) and the die cutter 4. Thereby, even if the plastic deformation corresponding to the concave portion 5a of the anvil roll (the convex pressing blade 4a of the die cutter) is generated in the intermediate plate 6 after being used for the shearing, the roll 10 , 10 is passed through and pressed, the intermediate plate 6 almost returns to the shape before use and can be used repeatedly, which is advantageous in terms of cost.

  When the intermediate plate 6 is used repeatedly, the material is preferably a material having flexibility such as rubber so that the intermediate plate 6 can easily return to its original shape. Moreover, although the example which used the die cutter 4 was shown in FIG. 10, it cannot be overemphasized that it can replace with the die cutter 4 and a press roll can be used.

  FIG. 11 shows still another embodiment of the present invention. In this embodiment, instead of inserting an intermediate plate between the plate material 1 (7) to be processed and the pressing roll 9, the surface of the pressing roll 9 is coated with an outer layer 9a having at least one nonmetallic layer.

  Also according to this embodiment, it is possible to perform the same shearing as in the case where the intermediate plate is inserted between the workpiece plate 1 (7) and the pressing roll 9, and it is possible to avoid the intermediate plate from being disposable. At the time of shearing, the workpiece plate 1 (7) is sheared without being pushed into the shearing recess 5a of the anvil roll beyond the thickness of the workpiece plate 1 (7). The material of the outer layer 9a is preferably a material having flexibility such as rubber so that it can easily return to its original shape.

  FIG. 12 shows still another embodiment of the present invention. In this embodiment, notches 5b are provided at a predetermined interval around the rotational direction of the recess 5a of the anvil roll.

  By providing the notch 5b in this way, it is possible to avoid pressing the portion between the die cutter 4 and the anvil roll 5 up to a portion unnecessary for shearing the processed plate material 1 (7). In other words, the anvil roll outer peripheral part of the length L between the recess 5a and the notch 5b of the anvil roll is a part necessary for shearing the processed plate material 1 (7), and the notch is left leaving this part. By providing 5b, it is possible to shear the processed plate material 1 (7), and it is possible to avoid pressing between the die cutter 4 and the anvil roll 5 up to a portion unnecessary for the shearing. Thereby, it can prevent that the to-be-processed board | plate material 1 (7) is damaged by an unnecessary press. In particular, in the case of a processed plate material having an active material (non-metal layer) on the surface as used in Example 1 above, this example is effective because the active material is brittle and easily damaged.

  In addition, although the said length L is based also on the diameter of an anvil roll, 0.5-2 mm is suitable. If it is less than 0.5 mm, there is a risk of scratching the surface of the processed plate material around the shear surface. Further, when the thickness exceeds 2 mm, the pressing portion becomes wide, and the portion for pressing the work plate material becomes wide, so that the work plate material is greatly damaged. That is, it is most suitable that the length L is 0.5 to 2 mm without damaging the surface of the processed plate material and minimizing the pressing portion. In addition, although the example which used the die cutter 4 was shown in FIG. 12, it cannot be overemphasized that it can replace with the die cutter 4 and a press roll can be used.

  In the above embodiment, when an anvil roll is used, it is preferable that the peripheral edge portion of the shearing recess is formed of a material having higher hardness than other portions. For example, the peripheral edge of the recess for shearing can be formed of cemented carbide, ceramics, or DLC coating. As a result, chipping or the like of the peripheral edge portion of the shearing concave portion that becomes the shearing portion can be prevented, and shearing can be performed reliably.

  Moreover, it is preferable that the material of the die cutter, the pressing roll, and the anvil roll main body is a material that is easy to obtain processing accuracy and has a Young's modulus of 150 GPa or more.

1 Workpiece plate (thin plate including non-metal layer)
DESCRIPTION OF SYMBOLS 1a Metal layer 1b Non-metal layer 2 Die 2a Shearing hole 3 Punch 4 Die cutter 4a Convex pressing blade 5 Anvil roll 5a Shearing recess 5b Notch 6 Intermediate plate 7 Workpiece plate (metal thin plate)
8 Intermediate plate 9 Pressing roll 9a Outer layer 10 Roll

Moreover, in this invention, it can replace with the die cutter which provided the convex pressing blade on the surface, and can also use the press roll which does not provide the convex pressing blade on the surface. That is, a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer is inserted between a pressing roll and an anvil roll provided with a recess for shearing, and the thin plate is sheared by the pressing roll. When the thin plate is sheared by being pushed into the concave portion, an intermediate plate having at least one nonmetallic layer is inserted between the thin plate and the pressing roll, and the thin plate is inserted into the shearing concave portion of the anvil roll. Shear without pushing beyond the thickness of the. In this case, the thin plate is completely sheared before the thin plate is completely pushed into the shearing recess of the anvil roll. In this case, it is preferable that the thin plate is pushed into the recess for shearing processing of the anvil roll to a position not less than the thickness of the metal layer and not more than the thickness of the non-metal layer of the thin plate.

When using a pressure roll and an anvil roll, a metal thin plate is inserted between the pressure roll and the anvil roll provided with the shearing recess, and this thin plate is used as a shearing recess for the anvil roll by the press roll. When shearing the thin plate by pushing, an intermediate plate having at least one non-metallic layer is inserted between the thin plate and the pressing roll, and the thin plate is inserted into the shearing recess of the anvil roll. Shear without pushing beyond. In addition, a metal thin plate is inserted between a pressing roll whose surface is coated with a layer having at least one non-metal layer and an anvil roll provided with a recess for shearing, and the thin plate is sheared by the pressing roll. When the thin plate is sheared by being pushed into the processing recess, the thin plate can be sheared without being pushed into the shearing recess of the anvil roll beyond the thickness of the thin plate.

Although not shown in the drawing, the two stacked plate materials 1 are inserted between the die cutter 4 and the anvil roll 5, and the position of 130 μm from the surface of the processed plate material 1, that is, the entire two stacked plate materials 1. When the convex pressing blade 4a of the die cutter was entered to a position of 36% of the thickness, it was confirmed that all of the two processed plate materials 1 were completely sheared, as in Example 2 above. It was.

Claims (33)

Between the die having a shearing hole and the punch, a thin plate in which a non-metal layer is laminated on one side or both sides of the metal layer is disposed, and the punch is relatively moved toward the shearing hole. In the thin plate shearing method of shearing the thin plate,
A thin plate shearing method that stops shearing by stopping the relative movement of the punch before the punch penetrates the thin plate and fits into the shearing hole.   The thickness of the metal layer of the thin plate is smaller than the total thickness of the non-metal layer, and the relative movement of the punch is positioned at a position equal to or greater than the thickness of the metal layer and less than the total thickness of the non-metal layer with respect to the plate thickness of the thin plate. The thin plate shearing method according to claim 1, wherein the thin plate is stopped at a point.   2. The thin plate according to claim 1, wherein a plurality of thin plates are arranged to be stacked, and the shearing is stopped by stopping the relative movement of the punches before the punch passes through all the thin plates and is fitted into the shearing hole. Shearing method. The thickness of the metal layer of the thin plate is smaller than the total thickness of the non-metal layer, and the relative movement of the punch is greater than the total thickness of the metal layer with respect to the total thickness of the stacked thin plates and the non-metal layer. The thin plate shearing method according to claim 3, wherein the thin plate is stopped at a position below the total thickness.
In the thin plate shearing method, a metal thin plate is disposed between a die having a shearing hole and a punch, and the punch is sheared by relatively moving the punch toward the shearing hole.
An intermediate plate having at least one non-metal layer is disposed between the thin plate and the punch, and the shear of the thin plate is finished by stopping the relative movement of the punch before the punch penetrates the intermediate plate. Shearing method. The thickness of the thin plate is smaller than the thickness of the intermediate plate, and the relative movement of the punch is stopped at a position not less than the thickness of the thin plate and not more than the thickness of the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate. 2. A method for shearing a thin plate according to 1.
  A non-metal layer is laminated on one or both sides of the metal layer between a die cutter having a convex pressing blade on the surface and an anvil roll having a shearing recess at a position corresponding to the convex pressing blade. When the thin plate is sheared by rotating and pressing the convex cutting blade of the die cutter into the concave portion for shearing processing of the anvil roll, the convex pressing blade of the die cutter does not penetrate the thin plate, And the thin plate shearing method of shearing a thin plate, without making it fit in the recessed part for shear processing of an anvil roll.   The thickness of the metal layer of the thin plate is smaller than the total thickness of the non-metal layer, and the die cutter's convex pressing blade is moved to a position that is greater than the thickness of the metal plate and less than or equal to the total thickness of the non-metal layer. The thin plate shearing method according to claim 7, wherein the thin plate is allowed to enter.   A plurality of the thin plates are stacked and inserted between the die cutter and the anvil roll, and the convex cutting blade of the die cutter does not penetrate the whole thin plate and is not fitted into the shearing concave portion of the anvil roll. The method of shearing a thin plate according to claim 7, wherein all of the thin plate is sheared.   The thickness of the metal layer of the thin plate is smaller than the total thickness of the non-metal layer, and the die cutter extends to a position that is greater than the total thickness of the metal layer and less than the total thickness of the non-metal layer with respect to the total thickness of the stacked thin plates. The method for shearing a thin plate according to claim 9, wherein the convex pressing blade is inserted.   The thin plate shearing method according to claim 7 or 9, wherein an intermediate plate having at least one nonmetal layer is inserted between the thin plate and the die cutter.   The thickness of the thin metal layer is smaller than the thickness of the non-metal layer and intermediate plate of the thin plate, and the thickness of the non-metal layer and intermediate plate of the thin plate is greater than the total thickness of the thin metal layer relative to the total thickness of the thin plate and intermediate plate. The thin plate shearing method according to claim 11, wherein the convex pressing blade of the die cutter is advanced to a position equal to or less than the total thickness.   The intermediate plate is made endless, the intermediate plate is inserted between the thin plate and the die cutter, then passed between rolls and pressed, and then inserted between the thin plate and the die cutter again. Or the thin plate shearing method according to 12;   The thin plate shearing method according to any one of claims 7 to 13, wherein the anvil roll is formed by forming a peripheral edge portion of the shearing concave portion with a material having higher hardness than other portions. The thin plate shearing method according to any one of claims 7 to 14, wherein the anvil roll is provided with notches at a predetermined interval before and after the rotational direction of the shearing recess.
  A metal thin plate is inserted between a die cutter provided with a convex pressing blade on the surface and an anvil roll provided with a shearing concave portion at a position corresponding to the convex pressing blade, thereby forming the convex cutter of the die cutter. When shearing the thin plate by rotating and pressing the blade into the shearing recess of the anvil roll, an intermediate plate having at least one non-metal layer is inserted between the thin plate and the die cutter, A thin plate shearing method in which a thin plate is sheared without penetrating the intermediate pressing plate through the intermediate plate and without being fitted into the recess for shearing of the anvil roll.   The thickness of the thin plate is smaller than the thickness of the intermediate plate, and the convex pressing blade of the die cutter is caused to enter a position not less than the thickness of the thin plate and not more than the thickness of the intermediate plate relative to the total thickness of the thin plate and the intermediate plate. 2. A method for shearing a thin plate according to 1.   17. The intermediate plate is made endless, the intermediate plate is inserted between the thin plate and the die cutter, then passed between the rolls and pressed, and then inserted between the thin plate and the die cutter again. Or the thin plate shearing method according to 17.   The thin plate shearing method according to any one of claims 16 to 18, wherein the anvil roll is formed by forming a peripheral edge portion of the concave portion for shearing with a material having higher hardness than other portions. The thin plate shearing method according to any one of claims 16 to 19, wherein the anvil roll is provided with notches at predetermined intervals before and after the rotational direction of the shearing recess.
  A thin plate in which a non-metal layer is laminated on one or both sides of a metal layer or a metal thin plate is inserted between the pressing roll and an anvil roll provided with a recess for shearing, and this thin plate is inserted into the anvil by the pressing roll. When the thin plate is sheared by being pushed into a recess for shearing the roll, an intermediate plate having at least one non-metal layer is inserted between the thin plate and the die cutter, and the thin plate is used for anvil roll shearing. A method for shearing a thin plate, wherein the thin plate is sheared without being pushed into the recess beyond the thickness of the thin plate.   The thin plate is a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer, and the thin plate is not less than the thickness of the metal layer and not more than the thickness of the non-metal layer of the thin plate in the recess for shearing of the anvil roll. The thin plate shearing method according to claim 21, wherein the thin plate is pushed to a position.   The thin plate is a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer, and a plurality of the thin plates are inserted between a press roll and an anvil roll, and the plurality of thin plates and the press are stacked. An intermediate plate having at least one non-metal layer is inserted between the rolls, and the plurality of stacked thin plates are not pushed into the recess for shearing of the anvil roll beyond the total thickness of the stacked thin plates. The thin plate shearing method according to claim 21, wherein the thin plate is sheared.   The plurality of stacked thin plates are pushed into a shearing recess of the anvil roll to a position that is not less than the total thickness of the metal layers of the stacked plurality of thin plates and not more than the total thickness of the non-metal layers of the stacked plurality of thin plates. The thin plate shearing method according to claim 23.   The intermediate plate is made endless, the intermediate plate is inserted between the thin plate and the pressing roll, then passed between the rolls and pressed, and then inserted again between the thin plate and the pressing roll. The thin plate shearing method according to any one of -24.   The thin plate shearing method according to any one of claims 21 to 25, wherein the anvil roll is formed by forming a peripheral edge portion of the shearing concave portion with a material having higher hardness than other portions. 27. The thin plate shearing method according to any one of claims 21 to 26, wherein the anvil roll is provided with notches at predetermined intervals before and after the rotational direction of the shearing recess.
  A thin plate in which a non-metal layer is laminated on one or both sides of a metal layer, or a metal plate, between a pressure roll having a surface coated with a layer having at least one non-metal layer and an anvil roll provided with a recess for shearing When the thin plate is sheared by inserting the thin plate into the shearing recess of the anvil roll with a pressing roll, the thin plate exceeds the thickness of the thin plate into the shearing recess of the anvil roll. A thin plate shearing method that shears without pressing.   The thin plate is a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer, and the thin plate is not less than the thickness of the metal layer and not more than the thickness of the non-metal layer of the thin plate in the recess for shearing of the anvil roll. The thin plate shearing method according to claim 28, wherein the thin plate is pushed to a position.   The thin plate is a thin plate in which a non-metal layer is laminated on one side or both sides of a metal layer, and a plurality of the thin plates are inserted between a pressing roll and an anvil roll, and the plurality of thin plates are anvil rolls. 29. The thin plate shearing method according to claim 28, wherein the thin plate is sheared without being pushed into a concave portion for shearing beyond the total thickness of the thin plates stacked.   The plurality of stacked thin plates are pushed into a shearing recess of an anvil roll to a position not less than the total thickness of the metal layers of the stacked thin plates and not more than the total thickness of the non-metal layers of the stacked thin plates. Item 30. The thin plate shearing method according to Item 30.   32. The thin plate shearing method according to any one of claims 28 to 31, wherein the anvil roll is formed by forming a peripheral edge portion of the shearing concave portion with a material having higher hardness than other portions.   The thin plate shearing method according to any one of claims 28 to 32, wherein the anvil roll is provided with notches at predetermined intervals before and after the rotational direction of the shearing recess.

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