KR20110052638A - Sheet shearing method - Google Patents

Abstract

In order to provide a shearing method of a thin plate that can precisely machine a mold and shear the thin plate with high quality without narrowing the clearance, a non-metallic layer (between the die 2 and the punch 3 having the hole for shearing 2a) In the shearing method of the thin plate which arrange | positions the thin plate 1 which has 1b) at least 1 layer, and shears the thin plate 1 by relatively moving the punch 3 toward the hole for a shearing process 2a, the punch 3 In the step before penetrating the thin plate 1 and fitting into the shearing hole 2a, the relative movement of the punch 3 is stopped and the shearing is finished.

Description

Shear shearing method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shearing method of a thin plate for forming a product by shearing a thin plate or a thin metal plate having a plate thickness of about 0.5 mm or less and a nonmetallic layer laminated on one or both sides of the metal layer.

As a method of forming a product from a thin plate, the method of punching (punching) a thin plate with a metal mold | die (punch and die) is the most common.

In this punching method, the workpiece is sheared by placing a workpiece (a thin plate) on a die having a punched hole and lowering the punch disposed above the punched hole to fit the end of the punch into the punched hole. In addition, a punch and a die may be reversed up and down, and a punch may be arrange | positioned under a die, and a die may be moved instead of a punch.

Many studies have been done on the processing conditions in the past. For example, in Non-Patent Document 1, the thickness of the plate to be processed and the gap between the punch and the die (punching hole) punching it, that is, the clearance (gap) Appropriate relationships are shown. According to this, about 5 to 10% of the plate | board thickness of a to-be-processed board | plate material is a moderate clearance.

According to the relationship between the plate | board thickness of a to-be-processed board | plate material and clearance, when the plate | board thickness of a to-be-processed board | plate material is 1 mm, clearance is about 50-100 micrometers, and if it is about this, manufacture of a metal mold etc. is also easy. However, if the plate thickness of the plate to be processed is, for example, 20 μm, the appropriate clearance is 1 to 2 μm, which requires precise processing of the mold, which requires a high level of skill in manufacturing and increases the price.

Moreover, when a metal mold | die is produced and punched with narrow clearance, another problem arises. One of them is a decrease in life due to wear of punches and dies. In other words, when the clearance is narrow, the punch and the die are often in contact with each other in the elastic deformation range, and wear is increased. In addition, when the punch and the die contact and deform out of the elastic deformation range, chipping problems also occur.

Another big problem is the problem of small debris from the plate to be processed by punching. This problem becomes remarkable when the workpiece is a laminated plate of a metal layer and a nonmetal layer. Debris from the workpiece can be pinched between punches and dies, causing problems that require high forces in punching or frequent cleaning. In addition, the mold may be broken.

Moreover, the conventional punching method has another problem. That is, when punching of a board | plate material, especially a metal plate, advancing also has a relationship with a metal mold | die, adhesion with a board | plate material to a punch tends to occur. The problem of adhesion can be prevented to some extent by coating the punch or die with ceramic, DLC (diamond-like carbon) or the like, but in a mold with a narrow clearance, the friction between the punch and the die is large, and only a temporary effect can be obtained.

As another problem, there is a deterioration in the quality of the outer edge of the plate (work part) to be processed after punching. This is because the workpiece is rubbed with the inner surface of the die after being punched, and continues to rub until it reaches the dead point of the punch and is separated from the die.

As described above, in conventional shearing by punching, various problems arise when the thickness of the plate to be processed becomes thin.

[Non-Patent Document 1] Akira Hashimoto, 『Press Work and Die-Making New Editions』, 7th Edition, Daily Industrial Newspaper, April 30, 1975, p35

The present invention has been made in view of the above-mentioned problems inherent in conventional shearing by punching, and the problem is that the sheet can be sheared for a long time with high quality, and the precise processing of the mold to be used is essential. The present invention is not intended to provide a method of shearing a sheet very well at low cost.

As a result of repeated studies on the shearing of thin sheets, the inventors have found that in the case of thin sheets in which non-metallic layers are laminated on one or both sides of the metal layer, the thin sheet is removed in a step before the punch penetrates the thin plate and fits into the hole for shearing the die. It turns out that it is completely sheared.

The present invention has been made on the basis of this knowledge. Between the die having a hole for shearing and a punch, a thin plate having a non-metallic layer laminated on one or both sides of the metal layer is disposed, and the punch is moved toward the hole for shearing relatively. The thin plate shearing method for shearing a thin plate is characterized in that the relative movement of the punch is stopped and the shear is finished in the step before the punch penetrates the thin plate and fits into the hole for shearing.

Thus, in the present invention, since the punch is not fitted to the die, it is not necessary to strictly adjust the clearance as in the conventional punching method in which the punch is fitted to the die, and the normal clearance as well as the zero clearance and the negative clearance with a large punch diameter are not required. You may. That is, in the present invention, it is not necessary to strictly adjust the clearance by precisely processing the mold (punch and die), so that the mold can be easily manufactured and the manufacturing cost can be reduced.

In addition, since the punch is not fitted to the die, neither the punch nor the die wears well, resulting in long die life. In addition, the movement after shearing of the plate to be processed is small, thereby reducing the occurrence of debris. Moreover, in the conventional method, there exists a problem that the metal part of the to-be-processed board | plate material to contact adheres with the shank of a punch. It is difficult to remove the adhered metals, rub or attempt to remove them with chemicals, or the punch may have debris, roughness, or corrosion, causing the surface to deteriorate. In addition, this phenomenon occurs every 100 times even if it is long, but every 5 to 10 times as short, which significantly impairs productivity. In the method of the present invention, the punch can be sheared without being in direct contact with the metal part of the workpiece, thereby preventing the workpiece from sticking to the punch.

As a result, the state of shearing can be maintained in a good state, so that thin sheets can be sheared with high quality, while molds are difficult to manufacture and there is no need to manufacture molds with high cost clearance to the limit, thus requiring high cost for mold making. Do not.

In the technical field of punching, there is a known method of punching a workpiece by first punching in one direction and then punching back in the opposite direction, rather than punching the workpiece in one punch operation (for example, For example, see Japanese Patent Application Laid-Open No. 2004-167547 and Japanese Patent Application Laid-Open No. 2001-300647), and the shearing method of the present invention is conventional in the above- It's essentially different from technology.

In the present invention, the punch is preferably stopped at a position equal to or greater than the thickness of the metal layer and less than or equal to the total thickness of the nonmetal layer with respect to the sheet thickness of the thin plate. If the position at which the punch is stopped is less than the thickness of the metal layer, there is a high possibility that the punching of the thin plate does not end. On the other hand, when the total thickness of the nonmetallic layer is exceeded, the occurrence of chipping of punches and dies, the increase of generation of cutting chips, and the welding of punches and thin metal components may be observed, and the effect of the present invention may not be sufficiently obtained.

Moreover, according to the experiment of this inventor, it turns out that the shearing method of this invention can be applied also when several sheets of sheets are piled up. In this case, several sheets of thin plates are stacked between the punch and the die, and the relative movement of the punches is stopped and shearing is completed at the stage before the punch penetrates all the thin plates and fits into the hole for shearing. This improves productivity because multiple sheets can be sheared simultaneously. For example, when several thin sheets are laminated from the beginning like an electrode plate of a lithium ion battery, the process of laminating | stacking after processing can be skipped by simultaneously shearing several sheets. However, the number of sheets that can be sheared at the same time is about 10 sheets in consideration of the quality of the cut surface of the plate to be processed. If this is exceeded, the cut surface gradually starts to become rough, so it is difficult to use in a field where high quality is required. When stacking multiple sheets at the same time and shearing them simultaneously, the punch is more than the total thickness of the metal layer (total thickness of the metal layers in the multiple sheets) and the total thickness of the nonmetal layer (multiple sheets) Total of the thickness of the non-metallic layer in < RTI ID = 0.0 >) < / RTI >

The shearing method of the present invention can be applied not only to the shearing by the punch and the die but also to the shearing by the die cutter and the anvil roll. That is, a thin plate having a non-metal layer laminated on one or both sides of a metal layer between a die cutter provided with a convex push cutting blade on its surface and an anvil roll having a concave portion for shearing at a position corresponding to the convex push cutting blade. When the thin plate is inserted by passing through the convex pressing blade of the die cutter to the recess for the shearing of the anvil roll, the convex pressing blade of the die cutter does not penetrate the thin plate, and also the shear of the anvil roll. The thin plate is sheared without fitting to the recessed portion for processing. This shearing method also has the same effect as the shearing method described above by punches and dies. In other words, the thin plate is completely sheared in a step before the convex push cutting edge 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 anvil roll, it is preferable to enter the convex push cutting edge of the die cutter to a position equal to or greater than the thickness of the metal layer and less than or equal to the total thickness of the nonmetal layer with respect to the sheet thickness of the thin plate.

Moreover, in the shearing method by a die cutter and anvil roll, in order to reliably shear the thin plate which is a to-be-processed board material, the intermediate plate which has at least 1 layer of a nonmetallic layer can be inserted between a thin plate and a die cutter. Thus, by using an intermediate plate, a thin plate can be sheared more reliably by the pushing effect by the plastic flow of an intermediate plate. In this case, it is preferable to enter the convex push cutting edge of the die cutter to a position where the total thickness of the thin plate and the intermediate plate is equal to or greater than the thickness of the thin metal layer or the non-metal layer of the thin plate and the total thickness of the intermediate plate.

Moreover, in this invention, instead of the die cutter which provided the convex push cutting blade in the surface, the press roll which does not provide the convex push cutting blade in the surface can also be used. That is, a thin plate having a non-metallic layer laminated on one or both sides of the metal layer is inserted between the pressing roll and the anvil roll provided with the recess for the shearing process, and the thin plate is pushed into the recess for the shearing of the anvil roll by the pressing roll. When the thin plate is sheared by inserting it, an intermediate plate having at least one layer of a nonmetallic layer is inserted between the thin plate and the die cutter, and the thin plate exceeds the thickness of the thin plate in the concave for annealing of the anvil roll. Shear without pushing. In this case, the thin plate is completely sheared in a step before the thin plate is completely pushed into the recess for the shearing of the anvil roll. In this case, it is preferable to push the thin plate to a position equal to or greater than the thickness of the metal layer and less than or equal to the thickness of the nonmetal layer of the thin plate in the recess for the shearing process of the anvil roll.

In such a shearing method using a die cutter or a pressure roll and anvil roll, a plurality of sheets of thin sheets can be sheared simultaneously by inserting a plurality of sheets of thin sheets between the die cutter or the pressure roll and the anvil roll. Specifically, in the case of using a die cutter, a plurality of thin plates are inserted between the die cutter and the anvil roll, and the convex push-cutting edge of the die cutter does not penetrate the entire thin plate, and also the recesses for shear processing of the anvil roll. Shear all of the thin plates without fitting them to. In this case, it is preferable to enter the convex-type cutting edge of the die cutter to a position equal to or greater than the total thickness of the metal layer with respect to the total thickness of the multiple sheets of thin plates. When using an intermediate plate, the convex push-cutting edge of the die cutter for a position where the overlap of multiple sheets and the total thickness of the intermediate plate is greater than or equal to the total thickness of the non-metal layer of the laminate and the total thickness of the intermediate plate It is preferable to enter.

In the case of using the pressing roll, a plurality of thin plates are inserted between the pressing roll and the anvil roll, and at the same time, an intermediate plate having at least one non-metallic layer is provided between the plurality of stacked sheets and the pressing roll. It inserts and it cuts the said several sheets of thin sheets without pushing into the recess for annealing of anvil roll more than the total thickness of the several sheets of thin sheets. In this case, it is preferable to push several laminated thin plates to the position for the shearing process of anvil roll to the position more than the total thickness of the metal layer of the several sheets of thin sheets, and below the total thickness of the nonmetallic layer of the several sheets of thin sheets.

In this invention, when using a press roll, instead of using an intermediate plate, the layer which has at least 1 layer of a nonmetallic layer can be coat | covered on the surface of a press roll. Specifically, a thin plate having a non-metallic layer laminated on one or both sides of the metal layer or a thin metal plate is inserted between a pressing roll having a layer having at least one non-metallic layer on the surface and an anvil roll having a recess for shearing. When the thin plate is sheared by pushing the thin plate into the recess for the shearing process of the anvil roll by the press roll, the thin plate is sheared without pushing the thin plate beyond the thickness of the thin plate in the shearing recess of the anvil roll. In this case, it is preferable to push a thin plate to the recessed part for annealing of an anvil roll to the position more than the thickness of a metal layer and below the thickness of the base metal layer of a thin plate. In this configuration, in the case of shearing by inserting a plurality of thin plates, the multiple stacked sheets are sheared without pushing the sheet thickness into the recess for annealing the anvil roll without exceeding the total thickness of the laminated sheets. Preferably, the multiple sheets of thin sheets are pushed into the recess for the shearing process of the anvil roll to a position not less than the total thickness of the metal layers of the multiple sheets of thin sheets and the total thickness of the nonmetallic layers of the multiple sheets of thin sheets.

As described above, the shearing method of the present invention is applied to a thin plate in which a non-metallic layer is laminated on one or both sides of the metal layer, but the shearing method of the present invention is applicable to the shearing of a thin metal plate. In the case of using a die and a punch, in the shearing method of the thin plate which arrange | positions the said metal thin plate by disposing a metal thin plate between a die with a hole for shearing, and a punch, and relatively moving a punch toward a hole for shearing, An intermediate plate having at least one nonmetallic layer is disposed between the thin plate and the punch, and the relative movement of the punch is stopped in the step before the punch penetrates the intermediate plate, thereby completing the shearing of the thin metal plate. In this case, it is preferable to stop the relative movement of the punch at a position equal to or less than the thickness of the thin plate and the thickness of the intermediate plate with respect to the total thickness of the thin plate and the intermediate plate.

In the case of using a die cutter and anvil roll, a thin metal plate is inserted between the die cutter having the convex push cutting blade mounted on the surface and the anvil roll having the concave portion for shearing at a position corresponding to the convex push cutting blade. When the thin plate is sheared by rotationally pressing the convex push-cutting edge of the die cutter into the recess for shearing of the anvil roll, an intermediate plate having at least one nonmetallic layer is inserted between the thin plate and the die cutter. The thin plate is sheared without causing the convex push cutting edge of the die cutter to penetrate the intermediate plate and to fit the recessed portion for shearing the anvil roll. In this case, it is preferable that the convex push cutting edge of the die cutter enters the position of the thickness of the thin plate and the thickness of the intermediate plate to the total thickness of the thin plate and the intermediate plate.

In the case of using the pressing roll and the anvil roll, a metal thin plate is inserted between the pressing roll and the anvil roll provided with the recess for the shearing process, and the sheet is pushed into the recess for the shearing of the anvil roll by the pressing roll. When shearing the thin plate, an intermediate plate having at least one non-metallic layer is inserted between the thin plate and the die cutter, and the thin plate is pushed beyond the thickness of the thin plate to the shearing recess of the anvil roll. Shear without putting. In addition, a thin metal plate is inserted between the pressing roll having a layer having at least one non-metal layer on its surface and the anvil roll having a recess for shearing, and the thin plate is passed through the pressing roll to recess the anvil roll. When shearing the thin plate by pushing it into the part, the thin plate may be sheared without pushing the thin plate into the concave for shearing of the anvil roll beyond the thickness of the thin plate.

In the shearing method of the present invention described above, in the case of using a die cutter or a press roll and anvil roll and using an intermediate plate, the intermediate plate is endless so that the intermediate plate can be repeatedly used, and the intermediate plate After passing through between a thin plate and a die cutter or a press roll, it can pass through a roll and press, and after that, it can be made to pass through between a thin plate and a die cutter or a press roll again.

Moreover, in this invention, what formed the peripheral part of the recessed part for shearing from the material whose hardness is higher than another part can be used as an anvil roll. Thereby, chipping of the periphery of the periphery of the concave portion for shearing to be the shear portion can be prevented, and shearing can be performed reliably.

Moreover, notches (cut out portions) can also be provided at predetermined intervals before and after the rotational direction of the recesses for shear processing of the anvil rolls. Thereby, it can prevent that a thin plate is excessively pressed and damaged before and after the rotation direction of the recessed part for shearing.

According to the shearing method of the present invention, in the shearing of a thin plate or a thin metal sheet in which a non-metallic layer is laminated on one or both sides of the metal layer, the thin plate can be sheared for a long time with high quality, and a mold can be produced at a relatively low cost. As a result, the sheet can be sheared at high quality and inexpensively.

1 shows the basic steps of the shearing method of the present invention.
2 shows another embodiment of the present invention.
3 shows another embodiment of the present invention.
4 shows another embodiment of the present invention.
5 shows a modification of the embodiment of FIG. 4.
6 shows another embodiment of the present invention.
Fig. 7 shows an example of the shape of the convex push cutting edge of the die cutter, (b) is the AA section of (a), (d) is the BB section of (c), and (f) is the CC of (e). The cross section is shown.
8 shows another embodiment of the present invention.
FIG. 9 shows a modification of the embodiment of FIG. 8.
10 shows another embodiment of the present invention.
11 shows another embodiment of the present invention.
12 shows another embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on the Example shown in drawing.

≪ Example 1 >

1 is an explanatory diagram showing the basic steps of the shearing method of the present invention.

In the embodiment of Fig. 1, the workpiece plate 1 is an electrode plate of a lithium ion battery in which an active material (nonmetal layer) 1b is laminated on both surfaces of a metal layer 1a made of copper or aluminum. The plate | board thickness is 20 micrometers of metal layers 1a, 80 micrometers of nonmetallic layers 1b, and 180 micrometers in total.

As shown in Fig. 1 (a), the workpiece 1 is placed on the die 2 having the shearing holes 2a and fixed. And as shown to Fig.1 (b), the to-be-processed board | plate material 1 is sheared by lowering the punch 3 arrange | positioned above the hole for a shearing process 2a.

In the embodiment, after the punch 3 is in contact with the surface of the workpiece 1, the punch 3 is lowered to a position of 30 占 퐉, that is, to a position of 17% of the sheet thickness of the workpiece 1. The punch 3 was stopped. As a result, it was confirmed that the plate 1 to be processed is completely sheared. The product portion of the sheared workpiece can be easily taken out by pressing or sucking the portion from above or below. In the Example, the clearance between punch-die was 100 micrometers. 10 micrometers is a value which does not have a special difficulty when manufacturing a metal mold | die.

Thus, in this embodiment, since the punch 3 does not directly contact the metal layer 1a at the center of the workpiece 1, the workpiece 1 is sheared, so that the metal from the metal layer 1a is punched. It adheres to (3) and does not adversely affect shearing. In addition, there is no problem of surface roughness of the shear surface.

In the embodiment of FIG. 1, the example of shearing the workpiece 1 in which the nonmetallic layer 1b is laminated on both surfaces of the metal layer 1a is illustrated, but the front end of the workpiece that laminated the nonmetallic layer on one side of the metal layer is illustrated. Likewise possible. In this case, it is preferable that the punch is brought into contact with the nonmetallic layer with the nonmetallic layer upward.

In addition, although the punch 3 was arrange | positioned above the die 2 in the Example of FIG. 1, you may arrange | position a punch below the die by inverting up and down. In the embodiment of Fig. 1, the punch 3 is moved to the shank, but the die 2 may be moved to the shank.

<Example 2>

2 shows another embodiment of the present invention. This embodiment is an example of shearing a plurality of sheets to be processed.

The to-be-processed board | plate material 1 was made into the electrode plate of the lithium ion battery of the plate | board thickness of 180 micrometers similar to the said Example, and 8 sheets were overlapped. That is, the total thickness of the to-be-processed board | plate material 1 is 1.44 mm.

In the embodiment, the punch 3 contacts the surface of the workpiece 1 with respect to the eight overlapped workpiece 1, and then the position of 200 µm, i.e., the total thickness of the eight overlapped workpiece 1 In the step of lowering the punch 3 to the position of%, the punch 3 was stopped. As a result, it was confirmed that all of the eight sheets to be processed 1 were completely sheared.

<Example 3>

3 shows another embodiment of the present invention. This embodiment is an example of shearing a thin metal plate using a punch and a die.

First, as shown in Fig. 3A, an intermediate plate 8 having a metal thin plate on the die 2 as the work plate 7 and having at least one non-metallic layer on the work plate 7 to be processed. Leave). In the Example, the to-be-processed board | plate material 7 was made into the titanium plate of 20 micrometers in thickness, and the polypropylene plate of 150 micrometers in thickness was used as the intermediate plate 8. As the material of the intermediate plate 8, in addition to polypropylene, acrylic resin, PET, polycarbonate, bakelite, plastic, fluorine resin, epoxy resin, polyurethane, polyvinyl chloride, polyamide, polyethylene, vinyl chloride, hard rubber, paper, Nonmetallic layers, such as glass plate, asphalt, and synthetic fiber, can be used, and the laminated material of these nonmetallic layers, or the laminated material of such a nonmetallic layer and a metal layer can also be used.

As shown in FIG.3 (b), the to-be-processed board | plate material 7 is sheared by lowering the punch 3 arrange | positioned above the hole 2a for shearing of a die | dye.

In the embodiment, after the punch 3 is in contact with the surface of the intermediate plate 8, the position is 40 mu m, that is, the thickness of the intermediate plate 8 is equal to or greater than the thickness of the intermediate plate 8 to be processed (the thin metal plate). The punch 3 was stopped in the step which lowered the punch 3 to the position which does not penetrate (8). As a result, it was confirmed that the plate 7 to be processed is completely sheared. The product part of the sheared workpiece may be simply taken out by pressing or sucking the part from above or below.

In the case of shearing the thin metal plate with the intermediate plate 8 interposed therebetween as in the present embodiment, after the punch 3 is in contact with the surface of the intermediate plate 8, the distance is at least equal to the thickness of the thin metal plate and maximum. The furnace is preferably allowed to stop at the stage before the punch 3 penetrates the intermediate plate 8. In other words, it is preferable that the depth of punching after the punch 3 is in contact with the surface of the intermediate plate 8 is equal to or greater than the thickness of the workpiece plate (metal thin plate) and the thickness of the intermediate material. In this case, it is a premise that the thickness of an intermediate plate is larger than the thickness of a to-be-processed plate material (metal thin plate).

<Example 4>

4 shows another embodiment of the present invention. This embodiment is an example in which the present invention is applied to a shearing method by a die cutting roll consisting of a die cutter and anvil roll. The plate to be processed is the same as in Example 1 above.

As shown in FIG. 4, the convex push cutting edge 4a is provided on the surface of the die cutter 4 at a position corresponding to the recess 5a for shearing the anvil roll. Then, the workpiece 1 is inserted between the die cutter 4 and the anvil roll 5 which rotate in the direction of the arrow, respectively, and the convex push cutting edge 4a of the die cutter is recessed 5a of the anvil roll. The plate to be processed 1 is sheared by rotational pressing.

In this shearing step, in this embodiment, as shown in Fig. 4, the convex push cutting edge 4a of the die cutter is inserted into the recess 5a of the anvil roll without penetrating the workpiece plate 1. The workpiece plate 1 is sheared without fitting. In the embodiment, the convex push cutting edge 4a was approached to a position of 20 mu m on the surface of the workpiece 1, that is, 11% of the plate thickness of the workpiece 1. As a result, it was confirmed that the plate to be processed 1 was completely sheared as in Example 1. The product portion of the sheared workpiece may be taken out simply by pressing or adsorbing the portion from above or below.

In addition, although not shown, two overlapped workpiece plates 1 are inserted between the die cutter 4 and the anvil roll 5, and 130 µm positions, i.e., two sheets overlapped on the surface of the workpiece plate 1, When the convex push cutting edge 4a of the die cutter enters the position of 36% of the entire thickness of the plate 1 to be processed, all 8 sheets of the plate 1 to be processed 1 are completely sheared as in the second embodiment. It was confirmed.

In the embodiment of FIG. 4, the example of shearing the workpiece 1 in which the nonmetallic layer 1b is laminated on both surfaces of the metal layer 1a is illustrated, but the front end of the workpiece that laminated the nonmetallic layer on one side of the metal layer is illustrated. Likewise possible. In this case, it is preferable to bring the nonmetallic layer into contact with the die cutter 4.

5 shows a variant of the embodiment of FIG. 4. In the example of FIG. 5, the intermediate plate 6 having at least one nonmetallic layer is inserted between the workpiece 1 and the die cutter 4. By interposing the intermediate plate 6 in this manner, the workpiece plate 1 can be sheared more reliably by the pushing effect of the plastic flow of the intermediate plate 6.

As the intermediate plate 6, specifically, acrylic resin, PET, polycarbonate, bakelite, plastic, fluororesin, epoxy resin, polyurethane, polyvinyl chloride, polyamide, polyethylene, polypropylene, vinyl chloride, hard rubber, Nonmetallic layers, such as paper, a glass plate, asphalt, and a synthetic fiber, can be used, and the laminated material of these nonmetallic layers, or the laminated material of these nonmetallic layers and a metal layer can also be used.

Example 5

6 shows another embodiment of the present invention. This embodiment is an example of shearing a thin metal sheet using a die cutter and anvil roll.

As shown in FIG. 6, the convex push cutting edge 4a is provided on the surface of the die cutter 4 at a position corresponding to the recess 5a for shearing the anvil roll. In this configuration, a thin metal plate is inserted between the die cutter 4 and the anvil roll 5 which rotates in the direction of the arrow, respectively, and between the workpiece 7 and the die cutter 4 at the same time. The intermediate plate 6 having at least one nonmetallic layer is inserted through the tube. Then, the convex push cutting edge 4a of the die cutter is rotatably pressed into the recess 5a of the anvil roll, and the plate to be processed 7 is pressed by the convex push cutting edge 4a of the die cutter 4. The workpiece 7 is sheared by pressing it into the recessed portion 5a of the anvil roll with 6) sandwiched therebetween. In this shearing step, the convex-type cutting edge 4a of the die cutter does not pass through the intermediate plate 6 and the workpiece plate 7 and does not fit into the recess 5a of the anvil roll. Shear).

When shearing the workpiece 7 (metal thin plate) with the intermediate plate 6 interposed by a die cutting roll as in this embodiment, the die cutter 4 and The gap (gap) of the anvil roll 5 is set so that the depth of penetration of the workpiece (metal thin plate) and the intermediate plate to the recess 5a for shearing the anvil roll is equal to or greater than the thickness of the intermediate plate. It is desirable to. In other words, the gap (gap) between the die cutter 4 and the anvil roll 5 is equal to or less than [(thickness of the plate + thickness of the intermediate plate)-thickness of the plate to be processed] and equal to or greater than the thickness of the plate to be processed. It is preferable. In this case, it is assumed that the thickness of the intermediate plate is larger than the thickness of the plate to be processed (metal thin plate).

In Examples 4 and 5 using the die cutter 4 and the anvil roll 5 described above, the outer shape of the convex push cutting edge 4a of the die cutter is according to the experiments of the present inventors. It is preferable to be equal to or slightly larger than the outer shape of 5a). Specifically, as shown in Fig. 4, when the length of one side of the outer shape of the convex push cutting edge 4a is A, and the length of one side of the outer shape of the corresponding shearing recess 5a is B, B≤A It is preferable to set it to ≤ 1.1B. The reason is that when A is smaller than B, burrs are likely to occur at the front end, and the quality of the front end surface deteriorates. On the contrary, when A is larger than 1.1B, the press part is widened and the part which presses a to-be-processed board | plate material becomes wide, and the quality of a board | plate material to be degraded.

Next, the shape of the convex push cutting edge 4a of the die cutter used in the present invention will be described. In general, in the case of shearing by a die cutter, the convex push cutting edge 4a of the die cutter protrudes only the outer portion and forms the end thereof at an acute angle as shown in FIGS. 7A and 7B. In the present invention, since it is a processing method using a shear, it is not necessarily required to have an acute-shaped end shape as shown in FIGS. 7A and 7B, and protrudes the whole as shown in FIGS. 7C and 7D. The end may be formed at right angles, or as shown in FIGS. 7E and 7F, the whole may be protruded, and the end may be obtuse. In addition, R processing may be performed at the end as shown by the dotted lines in FIGS. 7D and 7F.

<Example 6>

8 shows another embodiment of the present invention. This embodiment is an example of shearing using a press roll and anvil roll. The to-be-processed board | plate material 1 is the same as that of the said Example 1.

As shown in FIG. 8, the convex push cutting edge is not formed in the surface of the press roll 9, and the surface is smooth. And the recessed part 5a for shearing is provided in the surface of the anvil roll 5 which opposes this press roll 9 according to the shape of the product to cut | disconnect. In this configuration, a base metal 1 is inserted between the press roll 9 and the anvil roll 5 which rotate in the direction of the arrow, respectively, and at the same time, between the plate 1 and the press roll 9, the nonmetal The intermediate plate 6 having at least one layer is inserted through.

And the to-be-processed board | plate material 1 is sheared by pushing the to-be-processed board | plate material 1 into the recessed part 5a for shearing of anvil roll with the press roll 9. In this shearing step, the workpiece 1 is sheared without pushing the thickness of the workpiece 1 beyond the thickness of the workpiece 1 into the recess 5a for shearing anvil roll. Specifically, the workpiece 1 is pushed into the recess 5a of the anvil roll to a position equal to or greater than the thickness of the metal layer 1a and equal to or smaller than the thickness of the nonmetal layer 1b of the workpiece 1. In fact, it was confirmed that the to-be-processed board | plate material 1 was completely sheared when 20 micrometers of the board | substrate 1 was pushed into the recessed part 5a of the anvil roll for shearing.

In addition, although not shown in the figure, the two overlapping work plate 1 is inserted between the pressing roll 9 and the anvil roll 5, and the two overlapping work plate 1 is recessed for shearing the anvil roll ( When 80 micrometers were pushed and sheared in 5a), it turned out that all of the two to-be-processed board | plate materials 1 were completely sheared.

9 shows a variant of the embodiment of FIG. 8. In the example of FIG. 9, the thin metal plate is sheared as the workpiece plate 7. That is, the to-be-processed board | plate material 7 is sheared by pressing the to-be-processed board | plate material 7 to the recessed part 5a of the anvil roll with the intermediate plate 6 interposed by the press roll 9.

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

<Example 7>

10 shows another embodiment of the present invention. In the example of FIGS. 5, 6, 8 and 9 described above, the intermediate plate 6 inserted between the workpiece plate 1 (7) and the die cutter 4 or the pressing roll 9 is inserted. Although it was used only once, in this embodiment the intermediate plate 6 was to be used repeatedly.

Specifically, as shown in FIG. 10, the intermediate plate 6 is endless, and the intermediate plate 6 is inserted between the workpiece plate 1 (7) and the die cutter 4 to be used for shearing. It is passed between the rolls 10 and 10 and pressed, and then inserted again between the workpiece plate 1 (7) and the die cutter 4 again. Thus, even if a plastic deformation corresponding to the recess 5a of the anvil roll (the convex push cutting edge 4a of the die cutter) occurs in the intermediate plate 6 after the shearing, the roll (after Since the intermediate | middle plate 6 returns to the shape before use by passing through 10 and 10, it can be used repeatedly and it is advantageous also in terms of cost.

When the intermediate plate 6 is used repeatedly, the material is preferably made of a rubber-like material so that the intermediate plate 6 is easily returned to its original shape. In addition, although the example which used the die cutter 4 was shown in FIG. 10, it goes without saying that a press roll can be used instead of the die cutter 4. As shown in FIG.

<Example 8>

11 shows another embodiment of the present invention. This embodiment has an outer layer 9a having at least one non-metallic layer on the surface of the pressing roll 9 instead of inserting an intermediate plate between the workpiece plate 1 (7) and the pressing roll 9. It is coated.

This embodiment can also perform shear similar to the case where the intermediate plate is inserted between the workpiece plate 1 (7) and the pressing roll 9, and at the same time, the one-off of the intermediate plate can be prevented. At the time of shearing, the workpiece 1 (7) is sheared without being pushed beyond the thickness of the workpiece 1 (7) to the recess 5a for shearing of the anvil roll. The material of the outer layer 9a is preferably made of a material having flexibility such as rubber so that it is easy to return to its original shape.

Example 9

Figure 12 shows another embodiment of the present invention. In this embodiment, notches (cut portions) 5b are provided at predetermined intervals before and after the rotational direction of the recess 5a of the anvil roll.

By providing the notch 5b in this manner, it is possible to prevent pressing between the die cutter 4 and the anvil roll 5 to an unnecessary portion when shearing the workpiece plate 1 (7). In other words, the anvil roll outer circumferential portion of the length L between the recess 5a and the notch 5b of the anvil roll is a necessary portion when shearing the workpiece plate 1 (7), leaving this portion notch 5b. ), The shearing of the plate 1 (7) to be processed is possible, and it can be avoided to be pressed between the die cutter 4 and the anvil roll 5 to a portion unnecessary for the shearing. Thereby, the to-be-processed board | plate material 1 (7) can be prevented from being damaged by useless pressurization. Particularly, in the case of a workpiece having an active material (nonmetallic layer) on its surface, which is used in Example 1, the active material is fragile and easily damaged, and this embodiment is effective.

Although the said length L is related also to the diameter of anvil roll, 0.5-2 mm is suitable. If it is less than 0.5 mm, there exists a possibility of damaging the surface of the to-be-processed board material around a shear surface. Moreover, when it exceeds 2 mm, a press part will expand and the part which presses a to-be-processed board material will become wide, and damage to a to-be-processed board material will increase. That is, the length L of 0.5 to 2 mm is most suitable because it does not injure the surface of the plate to be processed and the pressing portion is minimized. Although the example which used the die cutter 4 was shown in FIG. 12, it goes without saying that a press roll can be used instead of the die cutter 4. As shown in FIG.

When the anvil roll is used in the above embodiment, it is preferable that the peripheral portion of the concave portion for shearing is formed of a material having a higher hardness than the other portions. For example, the peripheral part of the concave portion for shearing can be formed by cemented carbide, ceramic, or DLC coating. Thereby, chipping of the periphery of the periphery of the shear processing part used as a shear part can be prevented, and shearing can also be performed reliably.

Moreover, it is preferable that the material of a die cutter, a press roll, and an anvil roll main body is easy to raise processing precision, and is made into the material whose Young's modulus is 150 GPa or more.

1 Plate to be processed (thin plate including non-metallic layer)
1a metal layer
1b nonmetallic layer
2 die
2a hole for shearing
3 punch
4 die cutter
4a convex push cutting blade
5 anvil roll
5a Concave for shearing
5b notch
6 intermediate plates
7 Sheet to be processed (metal thin plate)
8 middle plate
9 rolling roll
9a outer layer
10 rolls

Claims (33)

In the shearing method of the thin plate which shears the said thin plate by arrange | positioning the thin plate in which the nonmetallic layer was laminated | stacked on one side or both sides of a metal layer, and moving a punch toward the hole for shearing relatively between the die which has a hole for a shearing process, and a punch,
A method of shearing thin plates that stops the relative movement of the punches and finishes shearing in a step before the punch penetrates the sheet and fits into the hole for shearing. The method of claim 1,
The thickness of the metal layer of the thin plate is smaller than the total thickness of the nonmetal layer, and the shearing method of the thin plate which stops the relative movement of the punch at a position equal to or greater than the thickness of the metal layer and less than the total thickness of the nonmetal layer with respect to the plate thickness of the thin plate. The method of claim 1,
A method for shearing thin plates, in which a plurality of thin plates are placed in a stack, and the punch is penetrated through all the thin plates to stop the relative movement of the punches in a step before the punch is fitted into the hole for shearing. The method of claim 3,
The thickness of the thin metal layer is smaller than the total thickness of the nonmetallic layer, and the shear of the thin plate which stops the relative movement of the punch at a position equal to or greater than the total thickness of the metal layer and less than or equal to the total thickness of the nonmetallic layer with respect to the total thickness of the plurality of overlapping thin plates. Way. In the shearing method of the thin plate which arrange | positions a thin metal plate between a die which has a hole for shearing, and a punch, and shears the said thin plate by relatively moving a punch toward a shearing hole,
A method of shearing thin plates, wherein an intermediate plate having at least one nonmetallic layer is disposed between the thin plates and the punches, and the relative movement of the punches is stopped at the stage before the punch penetrates the intermediate plate and the shearing of the thin plates is completed. The method of claim 5,
The thickness of a thin plate is smaller than the thickness of an intermediate plate, and the shearing method of thin plate which stops the relative movement of the said punch at the position which is more than the thickness of a thin plate, and below the thickness of an intermediate plate with respect to the total thickness of a thin plate and an intermediate plate. A thin plate having a non-metallic layer laminated on one or both sides of a metal layer is inserted between a die cutter having a convex push-cutting blade on the surface and an anvil roll having a concave portion for shearing at a position corresponding to the convex push-cutting blade. When the thin plate is sheared by rotationally pressing the convex pressing blade of the die cutter to the concave for shearing of the anvil roll, the convex pressing cutting edge of the die cutter does not penetrate the thin plate, and concaves for shearing of the anvil roll. Shearing method of thin plate which shears thin plate without fitting to part. The method of claim 7, wherein
The thickness of the thin metal layer is less than the total thickness of the nonmetal layer, and the shearing method of the thin plate in which the convex push-cutting edge of the die cutter enters a position above the thickness of the metal layer and below the total thickness of the nonmetal layer. The method of claim 7, wherein
A plurality of thin plates are inserted between the die cutter and the anvil roll, and the entire sheet is sheared without passing the convex push-cutting edge of the die cutter without fitting the entire thin plate and fitting into the recesses for shearing the anvil roll. Shear method of lamination. 10. The method of claim 9,
The thickness of the thin metal layer is smaller than the total thickness of the nonmetallic layer and the convex push-cutting edge of the die cutter enters a position where the total thickness of the multiple sheets of thin metal is greater than or equal to the total thickness of the metal layer and less than or equal to the total thickness of the nonmetallic layer. Shear method. The method according to claim 7 or 9,
A thin sheet shearing method wherein an intermediate plate having at least one nonmetallic layer is inserted between the thin plate and the die cutter. The method of claim 11,
The thickness of the metal layer of the thin plate is smaller than the thickness of the nonmetal layer and the intermediate plate of the thin plate, and the die cutter is less than the total thickness of the metal layer of the thin plate and the total thickness of the nonmetal layer and the intermediate plate of the thin plate with respect to the total thickness of the thin plate and the intermediate plate. Shear method of thin plates to enter the convex push cutting edge. The method according to claim 11 or 12, wherein
The intermediate plate is an endless, and the intermediate plate is inserted between the thin plate and the die cutter, and then passed through the roll and pressed, and then inserted again between the thin plate and the die cutter. The method according to any one of claims 7 to 13,
An anvil roll is a thin sheet shearing method in which the periphery of the concave portion for shearing is formed of a material having higher hardness than other portions. The method according to any one of claims 7 to 14,
The anvil roll is the shearing method of the thin plate in which the notch roll provided the notch before and after the rotation direction of the recessed part for shearing at predetermined intervals. A thin metal plate is inserted between the die cutter having the convex push cutting blade mounted on the surface and the anvil roll having the concave portion for shearing at a position corresponding to the convex push cutting blade, and the convex push cutting blade of the die cutter When shearing the thin plate by rotationally pressing the recess for shearing of the anvil roll, an intermediate plate having at least one nonmetallic layer is inserted between the thin plate and the die cutter, and the convex push-cutting edge of the die cutter A method for shearing thin sheets, which does not penetrate the sheets and does not fit into recesses for shearing the anvil rolls. The method of claim 16,
The thickness of a thin plate is smaller than the thickness of an intermediate plate, and the shearing method of the thin plate which makes the convex-type push-cutting edge of a die cutter into the position where the thickness of a thin plate and an intermediate plate is less than the thickness of an intermediate plate. The method according to claim 16 or 17,
The intermediate plate is endless, and the intermediate plate is inserted between the thin plate and the die cutter, and then passed between the rolls and pressed, and then inserted again between the thin plate and the die cutter. The method according to any one of claims 16 to 18,
An anvil roll is a thin sheet shearing method in which the periphery of the recess for shearing is formed of a material having a higher hardness than other portions. 20. The method according to any one of claims 16 to 19,
The anvil roll is the shearing method of the thin plate in which the notch roll provided the notch before and after the rotation direction of the recessed part for shearing at predetermined intervals. Between the pressing roll and the anvil roll provided with the recess for the shearing process, a thin plate or a thin plate made of a non-metal layer is laminated on one or both sides of the metal layer, and the thin plate is passed through the pressing roll for shearing the anvil roll. When shearing the thin plate by pushing it into the recess, an intermediate plate having at least one non-metallic layer is inserted between the thin plate and the die cutter, and the thin plate is passed into the recess for the shearing process of the anvil roll. Shearing method of thin plate to shear without exceeding the thickness of. The method of claim 21,
The thin plate is a thin plate in which a nonmetallic layer is laminated on one or both sides of the metal layer, and the thin plate is pushed into a recess for the shearing process of the anvil roll to a position equal to or greater than the thickness of the metal layer and below the thickness of the nonmetal layer of the thin plate. . The method of claim 21,
The thin plate is a thin plate in which a nonmetallic layer is laminated on one or both sides of the metal layer, and a plurality of thin plates are inserted between the pressing roll and the anvil roll, and at the same time, between the multiple overlapping thin plates and the pressing roll, An intermediate plate having at least one non-metallic layer is inserted thereinto, and the thin sheet laminated sheet is sheared without being pushed into the recess for annealing the anvil roll without exceeding the total thickness of the multiple stacked sheet. The method of claim 23, wherein
A thin sheet shearing method in which the multiple sheets of thin plates are pushed into a recess for the shearing process of the anvil roll to a position equal to or greater than the total thickness of the metal layer of the multiple sheets of thin sheets and below the total thickness of the nonmetallic layer of the multiple sheets of thin sheets. The method according to any one of claims 21 to 24,
The intermediate plate is an endless, and the intermediate plate is inserted between the thin plate and the press roll, and then passed through the roll to press the plate, and then inserted again between the thin plate and the press roll. The method according to any one of claims 21 to 25,
An anvil roll is a thin sheet shearing method in which the periphery of the concave portion for shearing is formed of a material having higher hardness than other portions. The method according to any one of claims 21 to 26,
The thin sheet shearing method of which the anvil roll provided the notch at predetermined intervals before and behind the rotation direction of the recess for shearing. A thin plate or a thin metal sheet in which a non-metal layer is laminated on one or both sides of the metal layer is inserted between the pressing roll covering the layer having at least one layer of the non-metal layer on the surface and the anvil roll providing the recess for shearing. The shearing method of the thin plate which shears the said thin plate, without pushing it into the recess for annealing of an anvil roll with a press roll, without pushing more than the thickness of the thin plate in the recess for an anvil roll. . The method of claim 28,
The thin plate is a thin plate in which a nonmetallic layer is laminated on one or both sides of the metal layer, and the thin plate is pushed into a recess for the shearing process of the anvil roll to a position equal to or greater than the thickness of the metal layer and below the thickness of the nonmetal layer of the thin plate. . The method of claim 28,
The thin plate is a thin plate in which a nonmetallic layer is laminated on one or both sides of the metal layer, and a plurality of thin plates are inserted between the pressing roll and the anvil roll, and the multiple overlapping thin plates are recessed for shearing the anvil roll. A shearing method of a thin plate to be sheared without exceeding the total thickness of the multiple sheets of laminated sheet on. The method of claim 30,
A thin sheet shearing method, wherein the multiple sheets of thin sheets are pushed into a concave for annealing of an anvil roll to a position equal to or greater than the total thickness of the nonmetallic layer of the multiple sheets of thin sheets. The method according to any one of claims 28 to 31,
An anvil roll is a thin sheet shearing method in which the periphery of the concave portion for shearing is formed of a material having higher hardness than other portions. 33. The method according to any one of claims 28 to 32,
The thin sheet shearing method of which the anvil roll provided the notch at predetermined intervals before and behind the rotation direction of the recess for shearing.

Images