JP2603668Y2 - Slitter for sheet material - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sheet-shaped material, particularly a metal foil such as an aluminum foil used as an electrode foil of an electrolytic capacitor and a copper foil used as a printed circuit material (hereinafter referred to as a metal foil sheet). The present invention relates to an improvement in a sheet-like material slitter for cutting a sheet into a plurality of strips.

[0002]

2. Description of the Related Art Conventionally, as a slitter for cutting a metal foil sheet into a plurality of strips, a slitter disclosed in Japanese Patent Publication No. 61-4636 is known.

As shown in FIG. 3, the slitter includes an annular thin blade 7 fixed to a rotating shaft 1 at a fixed interval and an annular thick blade 4 fixed to an opposing rotating shaft 2.
A so-called Gebel-type slitter for cutting by pressing in the axial direction of a, or as shown in FIG.
This is a so-called gang type slitter that cuts by engaging the annular thick blades 4b fixed to each other.

However, a soft metal foil sheet 2 having a high ductility such as aluminum foil or copper foil and easily causing processing distortion is used.
In the case of continuously cutting 1a into multiple strips, in the case of the Goebel-type slitter of FIG. 3, since the peripheral side surface 7a of the thin blade 7 is always pressed against the peripheral side surface 4c of the thick blade 4a, the metal foil sheet Can obtain a sharp and beautiful one due to shearing, but the cut end of the product is deformed as shown in FIG. 4A. In addition, one side edge of the cut product is pushed into the gap between the thick blades 4a by the thin blade 7 and receives a bending load to extend. Therefore, the cut end of the product has a waveform shown in FIG. ) Is formed. Further, one of the cut side edges extends and becomes longer than the other side edge.
However, there is a disadvantage that a camber such as C is generated.

On the other hand, in the gang type slitter shown in FIG. 5, unlike the Goebel type slitter, there is a slight meshing gap S between the opposing thick blades. There is a disadvantage that a sharp and beautiful cut surface cannot be obtained due to bending distortion in the direction.

[0006] As a slitter which eliminates the disadvantages of these two types of slitters at once and obtains a sharp and beautiful cut surface at both ends of the metal foil sheet, the above publication discloses a pair of rotary shafts 1 and 2 as shown in FIG. 2, a pair of annular thick blades 4 d and thin blades 6 a are alternately arranged, and the thin blade 6 a of the rotating shaft 2 is constantly pressed by the coned disk spring 5 against the thick blade 4 d of the rotating shaft 1 opposed thereto. We have proposed a slitter. In this slitter, a spacer 16 is fixed between the respective rotary blades of both rotary shafts, and as shown in FIG. 7, the feeder of the cut product 21a is parallel to the rotary shafts 1, 2 of the slitter. A plurality of separator rings 15 are provided on the pair of supports arranged at an interval in the axial direction, and the separator rings are interlaced between the rotary blades, and the direction in which the thin blades 6a are pressed by the disc springs 5 is opposite to the direction in which the blades 5 are pressed. In this direction.

This slitter improves on the disadvantages of the above-mentioned gang type slitter. Although it is a double-strength blade like a gang type slitter, a thin blade 6a is pressed against a thick blade 4d against a thick blade 4d by a disc spring 5 like a Gebel type slitter. Therefore, even if the metal foil sheet is cut, there is no fear that the product is sandwiched between the gaps S between the two blades. Further, since the outer diameter of the thin blade 6a and the thick blade 4d are the same and there is no axial step between the two blades, the cut metal foil sheet is always linear between the thin blade 6a and the thick blade 4d. Also, there is no flare like a Goebel type slitter. Further, since the thin blade 6a is pressed by the separator ring 15 in the direction opposite to the direction in which the disc spring 5 presses, the thick blade 4d and the thin blade 6a do not come into contact with each other in the intersecting region other than the intersecting start position X, and State is maintained. Therefore, since the product is cut only at the crossing start position X, the sharpness becomes sharp as in the case of the one-sided blade.

[0008]

However, in this slitter, too, the material of the thick blade 4d is a carbide steel, whereas the material of the thin blade is usually made of a thick material such as a tool steel so as to be easily elastically deformed. Since a material softer than the blade is used, as shown in FIG.
Is always pressed against the hard thick blade 4d by the disc spring 5,
In addition, since the operation has been performed for a long time with the separator ring 15 distorted in the axial direction, the peripheral side surface of the thin blade 6a has a burr-like protrusion due to abrasion on the outer peripheral surface of the thin blade 6a. There is a drawback that an object 6c is generated. Once this projection 6c is generated, the thin blade 6
The cut surface of the metal foil sheet 21a on the a side has a problem that only a poor quality metal foil sheet can be obtained, for example, a facet remains or a rough surface having no smoothness is obtained.

Further, since the thin blade 6a is constantly pressed by the disc spring 5 and is pressed by the separator ring 15 in a direction opposite to the direction pressed by the disc spring, the disc spring 5 rotates when operated at high speed. Vibrates in the axial direction. Therefore, the contact and pressing force between the outer peripheral edge of the thick blade and the outer peripheral edge of the thin blade at the intersection start position X become unstable. If the contact between the thick blade and the thin blade and the pressing force are not stable, the cut surface of the metal foil sheet will have defects such as deformation, flare, and camber.

The present invention has been made in view of the above problems, and eliminates the problem of unstable contact and pressing force between the outer edge of the thick blade and the outer edge of the thin blade. Even if a sheet made of a soft metal foil such as a copper foil is continuously cut into a plurality of strips, it is possible to obtain an excellent quality sheet having no deformation, flare, camber, etc. on the cut surface. The purpose is to provide a slitter that can.

[0011]

In order to achieve the above object, the present invention comprises a pair of rotating shafts arranged in parallel with each other and fixed to one of the rotating shafts at a predetermined interval. A plurality of annular upper blades, and a plurality of annular lower blades arranged at predetermined intervals on the other rotation axis of the rotation axis and movably arranged in the axial direction. And a sheet-like slitter in which the annular lower blade and the annular lower blade are interlaced with each other. (A) The plurality of annular lower blades sandwich each of the plurality of upper blades from both side surfaces thereof, A pair of lower blades having pressing means for pressing with a predetermined pressing force; and (b) a positioning ring having a groove on the outer periphery rotates on a rotating shaft between the lower blades of the pair of lower blades. The outer diameter of the pair of lower blades is movably inserted in the axial direction of the shaft. A support shaft is provided at a position larger than the rotation shaft in parallel with the pair of rotation shafts, and between the positioning ring and the support shaft, a front end portion engages with the groove, and a base portion includes the support shaft. The sheet-like slitter is provided with means for adjusting the inclination angle of the pair of lower blades via the positioning ring by moving in the axial direction of the sheet.

In this case, it is preferable that an inclination angle of the lower blade with respect to the upper blade is set to 0.05 ° to 0.3 °. Further, between the lower blades of the pair of lower blades, and between the positioning ring and the lower blades, there is provided means for removing cutting waste of the sheet-like material. Is preferred. Note that the upper blade and the lower blade referred to in the present invention are names defined according to their respective roles, and the upper blade is a plurality fixed at predetermined intervals in the axial direction of the rotating shaft, and the upper blade The lower blade is an annular thin blade that is movably inserted in the axial direction of the rotating shaft, and the peripheral side surface of the lower blade facing the lower blade. And cuts the sheet-like material supplied to the intersection of the two blades by being brought into direct contact with and pressed against. Therefore, regarding the disposition position of the upper blade and the lower blade, any one of the blades may be provided on any one of the rotating shafts with respect to the pair of rotating shafts arranged vertically. In addition, the material of the upper blade and the lower blade can be any known material,
The side surfaces of the upper blade and the lower blade are maintained at a constant contact angle (the contact angles θ ₁ and θ _{2 in} FIG. 1) while the peripheral side surface of the lower blade is pressed against the peripheral side surface of the upper blade with a constant pressing force. Since a sharp and beautiful cut surface can be obtained, the material of the upper blade and the lower blade is preferably hard and hardly deformed, and specifically, tool steel, high speed steel,
It is preferable to use super steel, ceramic or the like. In this case, when both blades are made of the same material, it is preferable to select the two blades so that there is a hardness difference between the same materials. In addition, when using the above-mentioned material, the blade thickness of the upper blade is preferably thinner in terms of economy because the sheet-like material having the same thickness as the upper blade is discarded as waste in the configuration of the present invention. , 1.5-
It is preferably 2.5 mm. On the other hand, the blade thickness of the lower blade is preferably thinner in preparation for obtaining a sheet-like material having a narrow product width, but the thickness is such that the peripheral side surface of the lower blade is not permanently deformed when pressed on the peripheral side surface of the upper blade. Is preferred.

[0013] The thickness of the positioning ring is slightly smaller than the blade thickness of the upper blade, and is a thickness provided with a groove for inserting the positioning ring. The specific thickness depends on the outer diameter of the lower blade, the thickness of the sheet-like material, slit conditions, etc., but is formed when the peripheral side surfaces of the pair of lower blades are sandwiched so as to contact the ring. The contact angle (the contact angles θ ₁ , θ _{2 in} FIG. 1) with the upper blade peripheral side surface of the lower blade peripheral side surface is 0.05.
It is preferable that the thickness be adjusted to a range of ° to 0.3 °. With this thickness, there is no intermeshing gap between the upper blade and the lower blade, so that a sharp and beautiful cut surface sheet can be obtained.

As the angle adjusting means for the lower blade, any means can be used as long as the tip engages with the groove of the positioning ring and the base moves in the axial direction of the support shaft. A screw shaft, an engagement ring having an outer diameter engaged with the groove is inserted into the screw shaft, and a means for clamping the engagement ring with a pair of collars provided with a female screw that is screwed with the screw shaft; Or the engagement ring is hydraulically
Means for moving in the support axis direction by a pneumatic cylinder or the like can be used. Needless to say, the engagement ring may be a rod-shaped member. In this case, it is necessary that the engaging member such as the above-mentioned engaging ring can be moved in the direction of the support axis independently of the other inclination angle adjusting means. As the material of the engaging member such as the positioning ring and the engaging ring, a material that is hard and is not easily deformed is preferable because the smaller the amount of abrasion when the two are in contact, the more stable the inclination angle becomes during long-time operation. Specifically, similar to the material of the upper blade and the lower blade, tool steel, high-speed steel, carbide steel, ceramic, etc. are used for the material of the positioning ring, and tool steel, high-speed steel, etc. are used for the engagement ring, etc. It is preferable to use Also in this case, when both rings are made of the same material, the selection is made so that a difference in hardness can be obtained even between the same materials.

[0015]

The sheet slitter configured as described above stops the rotating shaft each time when the inclination angle of the lower blade with respect to the upper blade becomes unstable as the cutting of the sheet material is continued, The tilt angle adjusting means of the lower blade is moved on the support shaft, and the tilt angle of the lower blade with respect to the upper blade is adjusted to an appropriate tilt angle via the positioning ring.

Therefore, the slitter can always cut a sheet under optimum cutting conditions, and the cut surface of the cut sheet has a sharp and beautiful cut surface without flare or camber. Is obtained.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be specifically described below with reference to the drawings showing one embodiment. FIG. 1 is a longitudinal sectional view of a cut portion of a sheet-like slitter according to the present invention, and FIG.
The metal foil sheet 21 being continuously taken off in the right direction in the figure by a take-off device (not shown) is turned into a metal foil sheet 21a and waste 21b by a plurality of annular upper blades 9 and annular lower blades 8a and 8b. It is a schematic sectional drawing which shows the state which is cutting.

In the figure, rotating shafts 1 and 2 are arranged in parallel with each other via a cut metal sheet 21a, and at least one of the rotating shafts is positively rotated by a driving device (not shown). . Each of the rotating shafts 1 and 2 has a plurality of annular upper blades 9 and an annular lower blade 8.
a and 8b are fixed at fixed intervals. That is, a ring-shaped spacer 16 is inserted between the plurality of upper blades 9 that are extended in a double-strand manner so that both sides of the blade edge are substantially perpendicular to the surface of the sheet-like material. The rotary shaft 2 is integrated by being tightened with nuts (not shown) provided at both ends of the rotary shaft 2. In addition, a plurality of annular lower blades 8a and 8b, both of which have the same edge shape as the upper blade 9, are arranged at a constant interval on the rotary shaft 1 so as to sandwich the upper blade 9. These upper blade 9 and lower blade 8
The meshing depth H1 between a and 8b is not particularly limited, but the thickness of the sheet to be cut is 0.5 m.
In the case of m or less, it is preferable to appropriately adjust the outer diameter of the two blades or the distance between the rotating shafts so as to fall within the range of 0.2 to 0.5 mm.

In the slitter of the present invention, a grooved positioning ring 10 having a thickness slightly smaller than the thickness of the upper blade 9 is provided on the rotating shaft 1 between the pair of lower blades 8a and 8b. By being formed slightly larger than the outer diameter of the shaft 1, it is inserted so as to be movable in the direction of the rotation axis.

Reference numeral 5 denotes a ring-shaped disc spring for pressing the lower blades 8a, 8b against the upper blade 9, which is mounted with its outer peripheral portion in contact with the vicinity of the tip of the lower blades 8a, 8b. The lower blade 8 due to the repulsive force of the spring itself.
The surging surfaces (peripheral side surfaces) of the a and 8b always press and contact the opposing peripheral side surfaces of the upper blade 9, and the side surfaces of the lower blades 8a and 8b press and contact the peripheral side surfaces of the positioning ring 10. Has been. The strength of the pressing force due to the repulsive force of the spring is determined by considering the outer diameter of the blade and the cutting ability of the metal foil sheet, that is, a good cut surface is obtained, and the circumference of the upper blade and the lower blade that come into contact with each other. It is preferable to set the pressing force to such an extent that the side surface does not wear much, specifically, 1.5 to 2.5 kg.
It is preferable to set to about.

In the present invention, as a means for applying an optimum pressing force to the upper blade 9 with the lower blades 8a and 8b, a ring for applying an appropriate pressing force to the disc spring 5 at the center of the pair of lower blades 8a and 8b. A spacer 17 in the shape of is provided.

The rotary shaft 3 has a threaded portion 19 on its outer periphery.
Is provided, and the engagement ring 11 is arranged so as to be sandwiched by a pair of ring positioning nuts 18 screwed with the screw portion. After inserting the tip of this engagement ring into the groove 10 a of the positioning ring 10, the positioning ring 10 is adjusted with the pair of ring positioning nuts 18 so as to be aligned with the upper blade 9, and fixed to the rotating shaft 3. It was made. That is, in this embodiment, the positioning ring 10, the engagement ring 11, and the ring positioning nut 18 are used.
Constitute the lower blade inclination angle adjusting means 22. In addition,
Reference numeral 12 denotes a cutting waste discharge guide, which is configured as an arcuate rod-shaped member, and penetrates between the pair of lower blades 8a and 8b and between the positioning ring 10 and the upper blade 9. .

By providing such means for adjusting the inclination angle of the lower blade, the contact angles θ ₁ and θ ₂ (θ ₁ = θ ₂ ) with respect to the upper peripheral surface of all the peripheral surfaces of the lower blade are uniformly set without bias. can do.

In the blade assembly, the length L1 between the two upper blades corresponds to the cutting width of the metal foil sheet 21a to be a product, and the length L2 equal to the blade thickness of the upper blade 9 corresponds to the cutting waste 21b. Corresponding to the cutting width, and the cutting waste is formed by a pair of lower blades 8a,
Although it is sandwiched between the peripheral side surfaces of the lower blade 8b and is wound around the lower blade, it can be forcibly discharged outside the apparatus by the cutting waste discharge guide 12.

Examples of the sheet-like material that can be cut by the above-described slitter of the present invention include the above-described metal foil sheets such as aluminum foil and copper foil, synthetic resin film paper, and sheet-like materials obtained by laminating these. Needless to say, this can also be suitably applied.

In the sheet-shaped slitter according to the present invention shown in FIG. 1, a tungsten carbide cobalt-based super-steel alloy having an outer diameter of 60.5
mm, blade thickness L2 is 2 mm and cutting width L1 is 26 mm
Fixed so that

On the other hand, the rotating shaft 1 is made of tool steel (SKD11) and has an outer diameter of 60.5 m as the lower blades 8a and 8b.
m and a blade having a blade thickness of 2 mm were arranged so as to sandwich both peripheral side surfaces of the lower blade 5. Between the pair of lower blades 8a and 8b, a positioning ring 10 made of a super steel material having an outer diameter of 54 mm, a thickness of 1.9 mm, a groove depth of 5 mm, and a width of 1 mm was arranged. The disc spring 5 is made of chrome-nabdium-based spring steel.
One having an outer diameter of 55 mm, an inner diameter of 40 mm, and a plate thickness of 0.2 mm was mounted in a direction to press the peripheral side surfaces of the lower blades 8a and 8b as shown in FIG. The shaft diameter of both rotating shafts 1 and 2 is 4
At 0 mm, the distance between the axes was 60.25 mm. Therefore, the engagement depth H1 between the lower blades 8a, 8b and the upper blade 9 is
0.25 mm, and the contact angles θ ₁ and θ ₂ are both 0.
05 °. On the other hand, the distance between the rotating shafts 1 and 3 is 47
mm. Therefore, the engagement depth H2 between the positioning ring 10 and the engagement ring 11 is 1 mm. The material of the rotating shaft 3 is tool steel (SKD-11).
An engaging ring 11 having an outer diameter of 42 mm, an inner diameter of 22 mm, and a thickness of 1 mm and a ring positioning nut 18 are alternately mounted, and a tip of the engaging ring 11 is inserted into a groove of the positioning ring 10. The ring positioning nut 18 was rotated and adjusted so that the center and the center of the upper blade 9 were on a straight line.

When a copper foil having a thickness of 35 mm was supplied to the slitter having the above configuration at a line speed of 50 m / min and cut, the cut surface of the copper foil was sharp, beautiful and sharp even after 2 hours. Was.

When the operation was suspended after 5 hours, and the blade surfaces of the lower blades 8a and 8b were observed, the contact surface with the upper blade 9 showed wear. No burrs 6c as shown in FIG. 8 were generated at all.
In addition, a sharp, beautiful and smooth cut surface was obtained without any change in the cut surface of the copper foil.

[0030]

According to the present invention, the sheet-like slitter of the present invention is provided with pressing means for holding each of a plurality of upper blades from both side surfaces thereof with a pair of lower blades and pressing with a predetermined pressing force.
Furthermore, since the inclination angle of each lower blade with respect to the upper blade is provided to adjust the inclination angle to an appropriate inclination angle via the positioning ring, when the inclination angle of the lower blade with respect to the upper blade becomes unstable, It can be easily adjusted to a proper angle.

Therefore, the slitter can always cut the sheet under the optimum cutting conditions, and the cut surface of the cut sheet has a sharp and beautiful cut surface without flare or camber. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a sheet-like slitter according to the present invention.

FIG. 2 is a schematic sectional view of the slitter of FIG.

FIG. 3 is a schematic view of a conventional slitter.

FIG. 4 is a sectional view of a cut section of a product obtained by the slitter of FIG. 3;

FIG. 5 is a schematic view of a conventional slitter of an embodiment different from the slitter of FIG. 3;

FIG. 6 is a schematic view of a conventional slitter of an embodiment different from the slitter of FIG. 5;

FIG. 7 is a schematic side view of the slitter of FIG. 6;

FIG. 8 is an explanatory view of a cutting state of the slitter of FIG. 6;

[Explanation of symbols]

 1: rotating shaft 2: rotating shaft 3: supporting shaft 5: disc spring 8a, 8b: lower blade 9: upper blade 10: positioning ring 10a: groove 11: engagement ring 12: cutting waste discharge guide 15: separator ring 16, 17: Spacer 18: Ring positioning nut 21a: Sheet-like material (product) 22: Inclination angle adjusting means H1, H2: Depth of engagement L1: Wide width (cut width) L2: Narrow part (width of cut chips) S: Gap

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B26D 1/24

Claims (3)

(57) [Scope of request for utility model registration] A pair of rotating shafts arranged in parallel with each other;
A plurality of annular upper blades fixed to one of the rotating shafts at a predetermined interval, and arranged at a predetermined interval to the other rotating shaft of the rotating shaft, and movably arranged in the axial direction. A plurality of annular lower blades, wherein the annular upper blade and the annular lower blade are interleaved with each other in the form of a sheet, and (a) the plurality of annular lower blades are Each of the plurality of upper blades includes a pair of lower blades having pressing means for holding the upper blades from both side surfaces thereof and pressing with a predetermined pressing force. A positioning ring having a groove on the outer circumference is inserted movably in the axial direction of the rotating shaft between the rotating shafts, and the pair of rotating shafts is located at a position larger than the outer diameter of the pair of lower blades. A support shaft is provided in parallel with the axis, between the positioning ring and the support shaft, An inclination angle adjusting means for adjusting an inclination angle of the pair of lower blades via the positioning ring is provided by an end portion engaging with the groove and a base moving in the axial direction of the support shaft. Slitter for sheet material. 2. An inclination angle of the lower blade with respect to the upper blade,
The sheet-like material slitter according to claim 1, wherein the slitter is set at 0.05 ° to 0.3 °. 3. Between the lower blades of the pair of lower blades, and between the positioning ring and the lower blades,
2. A sheet-slitter according to claim 1, further comprising means for removing cutting chips from the sheet.