KR20020030102A - Metal sheet drilling disk roll, metal sheet drilling device using the roll, metal sheet drilling method, and drilled metal sheet - Google Patents

Abstract

The present invention is manufactured by a metal plate drilling disc roll for continuously drilling holes in an elongated belt-shaped metal plate or metal foil, a metal plate drilling apparatus using the disc roll, a metal plate drilling method, and such a metal plate drilling apparatus and a drilling method. To a perforated metal plate.

The metal plate drilling disc roll 1 has a plurality of drilling blades, which are arranged on the outer circumferential surface of the disc roll having a predetermined thickness in a circumferential direction and protrude radially outward. The shape when the above-mentioned each punching blade 2 is viewed from above is a geometric shape surrounded by a single occlusion line, and the shape seen from the side of the punching blade 2 is positive in the outer periphery of the punching blade. The height of the end portion is higher than the height of the other portion so that the height of the perforated blade gradually decreases from both ends to the center portion of the outer circumference.

Description

Metal plate drilling disc roll, metal plate drilling apparatus using the disc roll, metal plate drilling method, and punched metal plate TECHNICAL SHEET DRILLING DISK ROLL, METAL SHEET DRILLING DEVICE USING THE ROLL, METAL SHEET DRILLING METHOD, AND DRILLED METAL SHEET}

In recent years, there has been an increasing demand for perforated metal plates having many holes to be used as substrates for electrodes of secondary batteries. The perforated metal plate for substrate of the secondary battery electrode is wound together with the active material attached to the surface of the perforated metal plate and filled in the battery case. The purpose of puncturing the perforated metal plate is to provide an anchoring effect that allows the active material to adhere better to the metal plate and also to fill the hole with the active material. In order to increase the capacity of the battery, it is necessary to fill the battery case with as many active materials as possible, so that as the metal plate to be drilled and used as the base of the electrode, the metal plate as thin as possible is required.

Conventionally, the method of punching a metal plate using a punching press has been generally used as a manufacturing method of a punched metal plate. However, in the punching method using a press, the metal plate to be punched must be supplied intermittently, and the metal plate to be punched must be stopped while the press working is performed. In addition, although considerable force is applied to the press, it is very difficult to increase the productivity of the punched metal sheet by increasing the punching speed.

Japanese Laid-Open Patent Publication No. 60-133936 discloses a method of increasing the perforation speed to improve the productivity of a perforated metal plate, and continuously manufacturing a perforated metal plate by rotating a perforated roller having a plurality of protrusions. The method produces a perforated metal plate in the following manner. First, by continuously passing a metal plate between a roller having a plurality of saw-tooth-like protrusions on the outer circumferential surface and a manual roller, a perforation is made by the protrusions, and at the same time burned out. Burr takes place. If the perforated metal plate continues to advance, the burr collides with the tip of the scratch jig provided in front of the perforated metal plate and folds. The metal plate is continuously fed further and fed to a rolling roller provided in the front, and rolled, and the folded portion is rolled into the metal plate to produce a burrless perforated metal plate. When the perforated metal plate is manufactured as described above, the perforation operation can be continuously performed, and the productivity of the perforated metal plate can be improved by increasing the perforation speed.

However, the above method of continuously producing the punched metal plate by rotating the above-mentioned projection roller with projections still has a problem to be solved.

In other words, the thickness of the burr folded portion is almost twice the thickness of the remaining portion of the metal plate without the burr. If such a metal plate is used as a perforated metal plate for gas of a secondary battery electrode, when the wound metal plate is filled in the battery case with the active material attached to the surface, the volume of the metal plate itself is large, and the amount of the active material filled in the battery case is Because of their small size, the method is not desirable for increasing the capacity of the cell.

Before rolling, the part where the burr was folded had twice as much thickness as the rest, so that when the burr was rolled up by increasing the rolling force so that the thickness of the part where the burr was folded is equal to the thickness of the remaining part of the metal plate, The folded portion is extremely rolled and stretched compared to the rest. Therefore, the hole density decreases by increasing the distance between the holes formed by the punching operation. When such a metal plate is used as the punching metal for the secondary battery case, the anchoring effect is insufficient and the amount of the active material filled in the holes is reduced, Such perforated metal plates are undesirable for secondary battery cases.

DISCLOSURE OF THE INVENTION The present invention relates to a disk roll for drilling a metal plate for continuously punching a long belt-shaped metal plate or a metal foil, a metal plate drilling apparatus and a metal plate drilling method using the disk roll, and a metal plate drilling. A perforated metal plate produced by a device and a metal plate perforation method.

1 is a schematic diagram showing an example of a state in which a metal plate is perforated by a metal plate perforation disc roll according to the present invention.

Figure 2 is a perspective view showing an example of the shape of the punching blade provided in a protruding state on the outer peripheral surface of the metal plate punching disk roll according to the present invention.

3 is a schematic view showing another example of a state in which the metal plate is perforated by the metal plate perforation disc roll according to the present invention.

Figure 4 is a schematic diagram showing the manner in which the metal plate is perforated when the metal plate is perforated using the metal plate perforation disc roll according to the present invention.

5 is a schematic view showing an example of the drilling unit of the metal plate drilling apparatus according to the present invention.

6 is a schematic view showing an example of a metal plate drilling apparatus according to the present invention.

7 is a schematic view showing another example of the drilling unit of the metal plate drilling apparatus according to the present invention.

8 is a schematic view showing still another example of the metal sheet drilling apparatus according to the present invention.

9 is a schematic view showing still another example of the metal sheet drilling apparatus according to the present invention.

SUMMARY OF THE INVENTION The present invention has been achieved to solve the above-described problems, while maintaining a uniform thickness of an elongated belt-shaped metal plate, and a large number of uniformities of the metal plate, especially the metal foil for substrate of the secondary battery electrode. A metal plate drilling disc roll capable of continuously drilling a hole, a metal plate drilling apparatus and a metal plate drilling method using the disc roll, and a metal sheet drilling device and a metal sheet drilling method produced by the metal plate drilling method are provided.

The present invention discloses as follows.

(1) A plurality of punching blades are disposed on the outer circumferential surface of the disk roll and have a gap in the circumferential direction of the disk roll, and the disk roll for punching the metal plate protrudes in the radial outward direction. The blade shape on the top view showing the top view of each punched blade on the surface is a geometric shape surrounded by a single occlusion line, and the shape seen from the side of the punched blade is the The height of the two ends of the perforated blade along the circumferential direction is higher than the height of the other portion, so that the height of the perforated blade gradually decreases from the both ends of the circumferential direction toward the center portion. Perforated disc rolls.

(2) The above-mentioned (1), wherein the shape in which the perforated blade is viewed from the side is in front of the perforated blade relative to the height of one end of the disc roll circumferential direction, that is, the rotation direction of the disc roll. The circumferential perforated blade end height is lower than the height of the other circumferential end of the disc roll in the perforated blade, i.e., the circumferential perforated blade end height in the rear relative to the rotational direction of the disc roll. Disc roll for drilling metal sheet, characterized in that the shape.

(3) The metal plate drilling according to the above (1), wherein the blade shape on the top view showing the drilling blade as viewed from above has a rectangular shape or a substantially rectangular shape having four rounded corners. Disc roll.

(4) The blade shape according to the above (1) or (2), wherein the blade shape on the top view showing the view of the perforated blade is elongated, elliptical, elliptical, rhombic, Or one of the substantially rhombus shapes having four rounded corners.

(5) A metal plate drilling apparatus for drilling a plurality of holes in a metal plate or a metal foil, wherein the disc roll for drilling a metal plate according to the above (1) to (3) is disposed as an upper roll, and on both sides of the upper roll, A pair of upper guide rolls each having a radius that is at least as small as a length corresponding to the thickness of the metal plate or the metal foil relative to the distance between the center of the drilling disk roll and the lowermost portion of the drilling blade is connected to have the same axis as the upper roll. A disc roll having an upper roll unit and having a thickness slightly larger than that of the metal plate perforation disc roll is disposed as a guide roll, and on both sides of the guide roll, at least the thickness of the metal plate or the metal foil and the perforated blades relative to the radius of the disc roll. A pair of lower guide rolls each having a radius larger by the length of the sum of the difference in protrusion height between the uppermost part and the lowermost part, Connected to have the same axis as the draw roll to form a lower roll unit, and the upper roll unit and the lower roll unit are interlocked with each other so that the metal plate or the metal foil can be punched when the metal plate or the metal foil passes under the drilling disc roll. A perforated region capable of forming a perforated region, and the tension plate unit provided with a tension adding unit configured to add tension to the metal plate or the metal foil in front and the rear of the perforated region.

(6) The above-mentioned (5), wherein a plurality of sets of upper roll units and lower roll units constituting the punching unit are connected together to have the same axis, so that a plurality of rows of holes can be drilled in the metal plate or the metal foil. Metal plate drilling apparatus characterized in that it is possible.

(7) The above-mentioned (5) or (6), wherein the upper roll unit, the lower roll unit, and the tension adding means are advanced along a portion of the outer circumference of the metal plate or the metal foil guide roll so that the metal plate or the metal foil is A metal sheet punching device, characterized in that it is installed to have a positional relationship that causes the metal sheet or metal foil to be punched when roundly wound on the guide roll.

(8) The upper pinch roll and the lower pinch roll, or the upper bridle according to any one of the above (5) to (7), wherein the tension adding means clamps the metal plate or the metal foil therebetween. Metal plate drilling apparatus, characterized in that consisting of a roll (bridle roll) and the lower bridal roll.

(9) A method of drilling a metal plate or a metal foil using the metal plate drilling apparatus according to any one of (5) to (8), wherein the two tension adding units are provided in front and rear of the drilling unit. The upper roll unit and the lower roll unit constituting the perforated unit are rotated while the metal plate or the metal foil passes and tension is applied to the metal plate or the metal foil by respective tension adding means constituting the respective tension adding units. A method of continuously drilling a metal plate or a metal foil by means of.

(10) The perforated metal plate produced using the metal plate perforation apparatus in any one of said (5)-(8) and the metal plate perforation method of said (9).

Herein, the present invention will be described in detail with reference to the accompanying drawings.

In order to make a plurality of holes in the metal plate or the metal foil having a thickness of about 0.02 to 0.2 mm, the disk roll for punching the metal plate according to the present invention is installed.

As shown in Fig. 1, on the outer circumferential surface of the disc roll 1, a plurality of perforation blades 2 are arranged at intervals along the circumferential direction of the disc roll and protrude radially outward of the disc roll.

The blade shape on the top view showing the above-mentioned view of each punching blade on the outer circumferential surface of the disc roll, that is, the cross-sectional shape of the punched hole, is a geometric shape surrounded by a single occlusion line. In that case, the shape is rectangular.

As shown in Fig. 1 and Fig. 2, the shape of the perforated blade as seen from the side includes a shear plane line 21 which constitutes both ends of the disc roll circumferential direction in the perforated blade; The rear end face line 22 is higher than the other parts so that the height of the perforated blade gradually decreases from the front end face line and the rear end face line toward the center part.

As shown in Fig. 2, the perforated blades 2 have both side cross-sectional lines of the perforated blades corresponding to the portions of the positive occlusion lines which face each other along the thickness direction of the disc roll 1 ( 23) protrudes lower than the imaginary line 24 connecting the front face line 21 and the rear face line 22 corresponding to the portions of the positive occlusion lines facing each other along the circumferential direction of the disc roll 1; It is formed to be.

In addition, the blade shape on the top view showing the drilling blade 2 as viewed from above, that is, the cross-sectional shape of the punched hole, as shown in FIG. 2, the shear plane line 21 and the side cross-section line 22. And a complete rectangle with a back cross section 23, or in such a rectangle, four corners rounded to a substantially rectangular shape.

As shown in FIG. 3, the front and rear cross-section lines 22 and the rear cross-section lines 22 constituting both ends of the perforated blades 22 along the circumferential direction of the disc roll on the outer circumferential surface of the disc roll 1, Of the leading end in the circumferential direction of the disc roll circumferentially first inherited by the metal plate or the metal foil (hereinafter abbreviated as the metal plate) 10 according to the height of the shear plane 21, that is, the rotation of the disc roll 1 in the perforation blade 22 The height can be formed lower than the height of the rear cross section 22, that is, the height of the trailing end in the circumferential direction of the disc roll circumferentially going into the metal plate 10 later than the preceding end thereof. When the shape seen from the side of the punching blade 2 is made as described above, as shown in FIG. 3, the front face line 21 and the rear face line 22 can be temporarily bited into the metal plate 10 simultaneously. have.

In addition, the blade shape on the top view showing the perforated blade 2 seen from above is not made into the shape of the above-mentioned rectangular or substantially rectangular shape, and according to the characteristic of a metal plate, for example, elongated circle shape, ellipse shape, and garden It may be made of any other desired geometric shape, such as a (right) shape, a rhombus shape, or a substantially rhombus shape with four rounded corners.

Here, with reference to FIG. 6, the structure of the metal plate drilling apparatus which concerns on this invention is demonstrated.

As shown, the metal plate drilling apparatus has a drilling unit, upper and lower pinch rolls 6a and 6b provided as tensioning means in front and rear of the drilling unit 20, and "17a" and "17b". And a tension adding unit 30. On the other hand, the punching unit 20 is formed by arranging the punching blades 2 at intervals along the circumferential direction of the rolls on the outer circumferential surfaces of the upper and lower rolls 11 and 12.

As shown in Fig. 9, the upper bridal rolls 16a and 17a and the lower bridal rolls 16b and 17b may also be used as the tension adding means.

In the metal sheet drilling apparatus configured as described above, the drilling blade 2 may be configured, for example, as shown in FIG.

That is, as shown in FIG. 5, the length corresponding to at least the thickness of the metal plate 10 is greater than the distance between the center of the metal plate drilling disc roll 1 and the lowermost part of the drilling blade (lowest part of the side cross-sectional line 23). The upper roll unit body 11 is formed by connecting a pair of disk rolls 3 each having a radius as short as the upper guide rolls on both sides of the disk roll 1 for punching metal sheets to have the same axis.

A disk roll having a thickness slightly thicker than the disk thickness of the metal plate perforation disc roll 1 is provided as the guide roll 4, and at least the thickness and the perforation of the metal plate 10 are larger than the radius of the guide roll 4. A pair of disks having a radius as long as the length corresponding to the difference in the protruding length between the top (front cross-section 21 or rear cross-sectional line 22) and the bottom (side cross-sectional line 23) of the blade 2. The roll 5 is connected so as to have the same axis on both sides of the guide roll 4 to form the lower roll unit 12.

The upper roll unit 11 and the lower roll unit 12 are engaged together to form the punching unit 20.

In Fig. 7, another example of the drilling unit 20 of the metal sheet drilling apparatus according to the present invention is shown. As shown, the perforation unit 20 is formed by a guide roll 4 which is arranged vertically symmetrically with respect to the metal plate 10 with respect to the metal plate perforation disc roll 1 and the metal plate perforation disc roll 1. Is formed. On the outer circumferential surface of the guide roll 4 having a thickness slightly thicker than that of the disk of the metal plate punching disc roll 1, each part facing the punching blade 2 protruding in the radially outward direction is provided with a punching blade 2 ), A plurality of concave portions 42 having a cross-sectional shape having the same shape as that of the blade shape (that is, the cross-sectional shape of the perforated hole) on the plan view showing the state seen from above.

Further, the guide roll 4 made of an elastic material such as rubber can be formed into a disk having a flat outer circumferential surface in which the recesses 42 having the same cross-sectional shape as the drilling holes are not disposed. In such a case, the drilling blade 2 provided on the metal plate drilling disk roll 1 is caught on the outer circumferential surface of the upper roll unit 12 during the drilling operation, and the outer peripheral portion of the guide roll 4 is It elastically deforms according to the shape of the punching blade 2. However, when the drilling operation is completed and the drilling blade 2 is separated from the guide roll 4, the shape of the drilling blade 2 returns to the original disk shape having the flat outer peripheral surface.

In order to drill a plurality of rows of holes spaced in parallel along the width direction of the metal plate 10 to the metal plate, as shown in FIG. 8, the upper and lower roll sets constituting the above-described drilling unit 20 (set) ) A plurality of pieces can be interconnected so that the axial direction of each roll shaft becomes the same, and a metal plate drilling apparatus can be comprised.

The drilling blade 2 according to the invention is arranged on the outer circumferential surface of the disc roll 1 at equal intervals along the circumferential direction of the disc roll 1 so as to project radially outward as shown in FIG. 1. It is composed. When the disc roll 1 rotates, the metal plate 10 with the uneven part of equal intervals starts to puncture. Further, the perforated blades 2 may be arranged on the outer circumferential surface of the metal plate at equal intervals along the circumferential direction, so that a part has a larger distance than the rest. That is, when the perforated blade is not disposed on a part of the outer circumferential surface of the disc roll 1 and the disc roll is rotated, the uneven perforations are formed at a wider interval than the perforated portion along the longitudinal direction of the metal plate 10. The metal plate 10 may be perforated. Therefore, in the metal plate, one unperforated portion can be arranged to have a greater distance than the other unperforated portion, and the metal plate can be cut at the unperforated portion arranged to have a fairly large interval. In particular, as described above, a metal plate (using a metal plate drilling apparatus made by interconnecting a plurality of sets of upper rolls 11 and lower rolls 12 constituting the drilling unit 20 so that each roll has the same axial direction), In the case of punching the metal plate 10 at intervals in the width direction of 10), it is possible to cut the desired portion of the metal plate 10 irrespective of the presence or absence of perforations arranged at intervals on the metal plate. When the metal plate 10 is used as a core of a battery, an unperforated portion having a gap larger than that of other portions is arranged at predetermined intervals so that the interval between the perforations matches the length of the core required for one battery. You can make it. This makes it possible to cut the metal plate 10 in the cutting of the metal plate 10 without causing both ends in the longitudinal direction of the metal plate to fall to the perforations. The spacing of the unperforated portions having a spacing greater than that of other unperforated portions can be arbitrarily changed by selecting the diameter of the disc roll.

Here, referring to FIG. 4, the metal sheet cloth according to the present invention will be described as an example in which the shape (cross-sectional shape of the punched hole) viewed from above the drilling blade 2 of the metal plate drilling disc roll 1 becomes a rectangle. A method of continuously drilling a plurality of holes in the metal plate 10 using the common disc roll 1 and the metal plate drilling apparatus will be described.

According to the invention, a metal plate of about 0.02 to 0.2 mm thickness, in particular an extremely thin metal foil having a thickness of 0.1 mm or less, is perforated.

As described above, the metal sheet drilling apparatus according to the present invention, as shown in Figure 6, the punching unit 20, a pair of pinch rolls (6a, 6b) provided in front of the punching unit, the punching unit ( And a tension adding unit 30 composed of a pair of pinch rolls 7a and 7b provided at the rear of 20). As described above, as shown in FIG. 9, the pinch roll may be replaced with upper and lower bridle rolls.

In order to drill the metal plate 10, first, tension is applied to the portion between the pinch rolls 6a and 6b and the pinch rolls 7a and 7b constituting the tension adding means. The metal plate 10 is held between the upper and lower rolls 6a and 6b and the punching unit 20 constituting the tension adding unit 30 while maintaining the state where the tension is applied, and the punching unit 20 and It passes continuously between the upper and lower rolls 7a and 7b constituting the tension adding unit 30.

When the tensioned metal plate 10 comes into contact with the upper roll 11 of the drilling unit, which is the disk roll 1 for drilling the metal plate, the metal plate 10 is first drilled as shown in Fig. 4B). A cut line appears at a portion of the shear line 21 in (2) and a portion of the side cross-section line 23 extending from the shear line line.

If the disk roll 1 for metal plate perforation continues to rotate, the metal plate of the side cross section 23 extending from the rear cross section 22 of the perforation blade 2, as shown in ii) of FIG. Of the side cross section 23 extending further from the rear cross section 22 of the perforating blade 2 and the rear cross section 22 of the perforated blade 2, which is further bitten into the portion, and the cut line already generated in the portion extends. A metal plate is fed into the part and a new cutting line appears in that part.

When the disk roll 1 for drilling the metal plate is further rotated, as shown in (i) of FIG. 4, the metal plate has a side cross-sectional line 23 extending from the shear plane line 21 of the drilling blade 2. The metal plate is further infiltrated into the part, and the cutting line in the part is extended, and the metal plate is further infiltrated into the part of the side cross-sectional line 23 extending from the rear cross-sectional line 22 of the punching blade 2, The already cut line is elongated.

As the disk roll 1 for drilling the metal plate is further rotated, as shown in FIG. 4B, the portion of the side cross section 23 extending from the front cross section 21 and the rear cross section 22, respectively. The cutting lines which are present are connected together, and a rectangular hole is formed in the metal plate 10.

When the disk roll 1 for drilling the metal plate further rotates, the metal plate 10 is bitten by the subsequent drilling blade 2, and a rectangular hole is formed in the metal plate 10 in the same manner as described above.

When the disk roll 1 for drilling the metal plate is rotated in the above manner, a rectangular hole on the metal plate can be continuously formed at a predetermined interval.

In the above case, as shown in FIG. 3, the height of the shear plane line 21 forming the circumferential leading end first bited by the metal plate 10 as the disk roll 1 rotates, If the metal plate 10 is set lower than the height of the rear end face line 22 which forms the laterally circumferential trailing end portion, the metal plate 10 can be simultaneously snapped on the front end face line 21 and the rear end face line 22. As a result, it is possible to drill the hole of the rectangular shape in the metal plate 10 more accurately and reliably.

In the case of drilling a metal plate made of a metal foil having an extremely thin thickness of 0.1 mm or less, without applying tension to the metal plate 10, as shown in Fig. 2, the front face line 21 and the rear end face Even when the height of the middle portion between the lines 22 is set lower than the height of the front face line 21 and the rear face line 22, that is, in the blade of the disc roll 1 for metal plate drilling, Even if the part corresponding to the section line 23 protrudes lower than the imaginary straight line connecting the highest point of the part corresponding to the front section line 21 and the rear section line 22 together, Low stiffness As a result, the metal plate becomes difficult to be bitten in the portion corresponding to the front face line 21 and the rear face line 22 in the blade, and it becomes difficult to drill the hole accurately and continuously. Therefore, in the case of drilling a metal foil having an extremely thin thickness of 0.1 mm or less, it is preferable to provide tension to the metal foil.

As shown in FIG. 9, the metal plate 10 is moved so that the metal plate 10 is wound around a portion of the outer circumference of the guide roll 2 (lower roll 12) so that the metal plate is in close contact with the lower roll 12. When the metal sheet is drilled, the metal foil having an extremely thin thickness of 0.1 mm or less can be reliably drilled. In such a case, the upper and lower bridal rolls 16a and 16b and the upper and lower bridal rolls 17a and 17b, which serve as tensioning means, and the upper roll 11 and the lower roll 12 are perforated. A part of the outer periphery of the guide roll 2 (lower roll 12) without having a positional relationship (see FIG. 6) that can linearly move the metal plate 10 between the unit body 20 and the tension-added unit body 30. It is installed to have a positional relationship that can advance the metal plate along.

5 and 7 show a case in which holes are formed in the metal plate 10 to form one row. As shown in FIG. 8, the metal sheet drilling apparatus may be configured by arranging a plurality of sets of upper rolls 11 and lower rolls 12 constituting the metal sheet drilling units so that each roll has an axis in the same direction, and substantially The holes having a rectangular shape are arranged at intervals along the length direction of the metal plate to form one row, and the holes can be drilled in the metal plate such that a plurality of such rows are formed in the width direction of the metal plate.

In such a case, the holes can be drilled in an arbitrarily arranged form such as an array having a predetermined interval, an arrangement of a lattice pattern, or the like by mutually adjusting the interval of the drilling blades 2 of the adjacent metal sheet drilling disc rolls 1.

Using the metal plate drilling apparatus and metal plate drilling method having the above-mentioned metal plate drilling disk roll 1, it is possible to produce a punched metal sheet having a plurality of holes according to the present invention. A multi-hole perforated metal plate according to the invention can be produced by continuously and precisely perforating a uniform hole, especially in a metal foil with an extremely thin thickness of 0.1 mm or less, which perforated metal plate is folded Since it does not have a protruding portion such as a back portion, etc., it is suitable for the gas of the secondary battery electrode.

(Example)

Using the SKS1 material, 30 sets of disk rolls (upper rolls) were formed in the form of disks having a thickness of 1 mm and a diameter of 80 mm. The outer peripheral surface had a gap of 1.59 mm. Sixty perforated blades were arranged to project radially outward, respectively. Each blade was made to have a perforated cross section in the shape of a square of 2.6 mm (length) x 1 mm (width).

Each of the perforation blades has a height (maximum height) of rectangular front and rear end surfaces protruding from the front and rear portions with respect to the thickness direction of the disc roll. 1 mm, the height (minimum height) of the central portion of the side cross section projecting to the left and right portions relative to the circumferential direction of the disc roll in the blade is 0.5 mm, and the height of the perforated blade is at the shear surface It is made to change in the form of a continuous arc through the center of the side section to the rear section.

Using an alloy tool steel (SKS1) material, 31 sets of disc rolls (upper side guide rolls) having a thickness of 1 mm and a diameter of 80 mm were manufactured. The metal sheet drilling disc rolls and the side guide rolls were alternately arranged to have the same axis so that the side guide rolls were placed on both sides of the metal sheet drilling disc roll, and the spacer was inserted therebetween to adjust the gap, and The upper roll was comprised by making the distance between each side guide roll and each metal plate perforation disc roll into 0.5 mm.

On the other hand, 30 sets of disk rolls (guide rolls) having a thickness of 1 mm and a diameter of 80 mm were made by using the alloy tool steel (SKS1) material, and 1 mm by using the alloy tool steel (SKS1) material. 31 sets of disc rolls (lower side guide rolls) having a thickness and a diameter of 81 mm were made. The lower roll was configured by alternately arranging the guide roll and the lower side guide roll so as to have the same axis so that the lower side guide roll was placed on both sides of the guide roll.

The perforated unit was constructed by biting the upper roll and the lower roll thus manufactured. By arranging the perforated blades of the adjacent top rolls aligned at half pitch intervals along the circumferential direction, the holes formed after the perforation operation were arranged at intervals.

In addition, as shown in FIG. 9, when a pair of bridal rolls is provided as a tension adding unit in front and rear of the drilling unit, and the metal plate moves, the metal plate is wound along a portion of the outer periphery of the lower roll of the drilling unit. Made it. The rotational speed of the front bridal rolls was slightly higher than that of the rear bridal rolls, so that tension was always applied to the portion between the two bridal rolls in the metal plate. As described above, the metal sheet drilling apparatus was configured.

Then, using the sheet metal punching device, a long belt-shaped nickel plated steel foil having a thickness of 0.035 mm and a width of 65 mm was punched out. The rotational speeds of the front bridal roll and the rear bridal roll constituting the tension addition unit and the rotational speeds of the upper and lower rolls constituting the perforation unit were set, respectively, so that the obsession was advanced at a speed of 1 m / sec. The rotational speed of the bridal roll was set such that a tension of 2 kgf was applied to the portion between the front bridal roll and the rear bridal roll in the metal foil. As a result, a square-shaped hole of 2.6 mm (length) x 1 mm (width) was drilled at intervals of 1.59 mm along the longitudinal direction and in the form of 30 rows with a gap of 1.1 mm in the width direction. Nickel-plated steel foil having a closed hole was obtained.

The present invention relates to a metal sheet drilling apparatus and method using a metal sheet drilling disk roll, wherein the drilling blades are arranged on the outer circumferential surface of the disk roll at intervals in the circumferential direction of the disk roll and protrude radially outward. By using the metal plate drilling apparatus and method according to the present invention, a plurality of uniform holes having a certain depth can be successively drilled into an elongated belt-shaped metal plate, particularly a metal foil used as a base for secondary battery electrodes.

Claims (11)

In the disk roll for punching the metal plate is arranged on the outer circumferential surface of the disk roll with a plurality of drilling blades spaced in the circumferential direction of the disk roll, protruding in the radially outward direction, The blade shape on the top view showing the above-mentioned view of each punching blade on the outer circumferential surface of the disc roll has a geometric shape surrounded by a single occlusion line, The side view of the perforated blade is characterized in that, along the circumferential direction of the disc roll, both end heights of the perforated blade are higher than the heights of the other portions, and the height of the perforated blades gradually increases from both ends toward the center portion. A disk roll for punching a metal plate, characterized by being concave in shape so as to be lowered. The circumferential end height of the other side whose shape which saw the said perforation blade from the side surface is preceded in the rotation direction of the said disc roll is the other circumferential end height which follows in the rotation direction of the said disc roll. Disc roll for drilling metal sheet, characterized in that the lower shape. The disk roll for punching metal sheets according to claim 1, wherein the blade shape in plan view showing the punching blade from above is a rectangular shape or a substantially rectangular shape having four rounded corners. The blade shape according to claim 1 or 2, wherein the blade shape on the plan view showing the perforated blade from above has a long, elongated circle shape, an ellipse shape, a garden shape, a rhombus shape, or four rounded corners. A disk roll for punching a metal sheet, characterized in that it has one of a substantially rhombus shapes. To puncture a plurality of holes in a metal plate or a metal foil, as a metal plate drilling apparatus, The metal plate punching disc roll according to any one of claims 1 to 3 is disposed as an upper roll, and on both sides of the upper roll, at least a metal plate or a distance from the center of the metal plate punching disc roll to the bottom of the drilling blade. A pair of upper guide rolls whose radius is reduced by a length corresponding to the thickness of the metal foil is connected coaxially with the upper roll to form an upper roll unit, Disc rolls having a thickness slightly larger than the thickness of the metal plate perforated disc roll are arranged as guide rolls, and on both sides of the guide roll, the protrusion amount and the bottom of the uppermost part of the perforated blade at least the thickness of the metal plate or the metal foil than the radius of the disc roll. A pair of lower guide rolls having a radius larger by the sum of the difference in protrusion amounts of the coaxially connected with the guide roll to form a lower roll unit, The upper roll unit and the lower roll unit are engaged with each other, so that a perforated area is formed to perforate the metal plate or the metal foil when the metal plate or the metal foil passes under the perforated disc roll, And a tension adding unit made of tension adding means for adding tension to the metal plate or the metal foil in front of and behind the punching area. 6. The metal plate drilling apparatus according to claim 5, wherein a plurality of sets of the upper roll unit and the lower roll unit forming the drilling unit are coaxially connected, so that a plurality of rows of holes can be drilled in the metal plate or the metal foil. The upper roll unit, the lower roll unit, and the tension adding means are advanced along a portion of the outer circumference of the metal plate or the foil roll, so that the metal plate or the metal foil is wound around the guide roll and perforated. Metal plate drilling apparatus, characterized in that installed in a positional relationship. 8. The metal sheet drilling apparatus according to claim 5 or 7, wherein the tension adding means comprises an upper pinch roll and a lower pinch roll for sandwiching the metal plate or the metal foil therebetween. 8. A metal sheet drilling apparatus as claimed in claim 5 or 7, wherein said tension adding means comprises a pair of upper bridal rolls and a lower bridal roll. As a metal plate drilling method of drilling a metal plate or a metal foil using the metal plate drilling apparatus as described in any one of Claims 5-9, The metal plate or the metal foil is passed through two tension adding units provided at the front and the rear of the perforated unit, and the tension is applied to the metal plate or the metal foil by respective tension adding means constituting the respective tension adding units. A metal plate drilling method for continuously drilling a metal plate or a metal foil by rotating an upper roll unit and a lower roll unit forming a drilling unit. The perforated metal plate produced using the metal plate perforation apparatus as described in any one of Claims 5-9, and the metal plate perforation method of Claim 10.