JPH08157Y2 - Sheet-like slitter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sheet-like material, particularly an Al foil used as an electrode foil of an electrolytic capacitor and a metal foil such as a Cu foil used as a printed circuit material (hereinafter, The present invention relates to an improvement in the slitter of a sheet-like material for cutting a metal foil sheet) into a plurality of strips.

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

As shown in FIG. 4, this slitter has a ring-shaped thin blade 6 which is fixed to the rotary shaft 1 at regular intervals and has a striking shape.
Is a so-called Goebel-type slitter that presses in the axial direction of the annular thick blade 4a fixed to the opposing rotary shaft 2 to cut it,
As shown in FIG. 5, it is a so-called gang type slitter which cuts the annular thick blades 4b fixed to the respective parallel rotating shafts 1 and 2 by meshing with each other.

However, when a soft metal foil sheet 21a having a high ductility such as an Al foil or a Cu foil and easily causing processing distortion is continuously cut into multiple strips, the Gobel type slitter shown in FIG.
Since the peripheral side surface 6a of the thin blade 6 is always pressed against the peripheral side surface 4c of the thick blade 4a, the cut surface of the metal foil sheet can be sharp and beautiful due to shearing, but the other cut surface is thin. Since it is bent and deformed in the downward direction in the figure depending on the blade thickness, there is a drawback that a so-called flare 13 is deformed and a camber is deformed.

On the other hand, in the gang type slitter shown in FIG. 5, unlike the Gobel type slitter, there is a slight meshing gap l between the thick blades facing each other, so that the end portion of the metal foil sheet is easily caught in this gap and the gap direction is increased. It has the drawback that it cannot be obtained a sharp and beautiful cut surface due to bending strain.

As a slitter that eliminates the drawbacks of both types of slitters and obtains sharp and beautiful cut surfaces at both ends of a metal foil sheet, as shown in FIG. 6 in Japanese Patent Publication No. 61-4636, a pair of rotary shafts 1, A slitter is proposed in which a pair of annular thick blades 4d and thin blades 3a are alternately arranged in each of 2 and the thin blade 3a of the rotary shaft 1 is constantly pressed against the thick blade 4d of the rotary shaft 2 by the disc spring 5. ing.

This slitter is an improvement of the drawbacks of the above gang type slitter.It is a double-edged blade like a gang type slitter, but a thin blade 3a like a Gobel type slitter.
Since the thick blade 4d is pressed against the thick blade 4d by the disc spring 5, there is no concern that the product will be caught in the gap between the blades even if the metal foil sheet is cut. Further, since the outer diameters of the thin blade 3a and the thick blade 4d are the same and there is no axial step between the blades, the cut metal foil sheet is always in a straight line between the thin blade 3a and the thick blade 4d. The flare does not occur unlike the Gobel type slitter.

However, even in this slitter, usually, as the material of the thin blade is easily elastically deformed, for example, the material of the thick blade 4d is carbide, and the material of the thin blade 3a is tool steel, which is softer than the thick blade. As shown in FIG. 7, the thin blade 3a, which is operated for a long time while being strongly pressed by the disc spring 5 to the hard thick blade 4d, has its peripheral side surface almost like the thick blade 4d. It looks like it's been polished,
There was a drawback that burr-like protrusions 3c were generated on the outer peripheral surface of the thin blade 3a due to wear. That is, when the contact pressure of the thin blade 3a pressed against the thick blade 4d by the disc spring 5 or the like is not adjusted to an appropriate strength and the contact pressure is applied with a strong pressing force for a long time, the thin blade 3a is Then, the above-mentioned drawbacks occur. Once this protrusion 3c occurs, the cutting surface of the metal foil sheet 21a on the side of the thin blade 3a has a facet or has a rough surface without smoothness.
There is a problem in that only poor quality metal foil sheets can be obtained.

The present invention has been made in view of the above problems, and even if a sheet material made of a soft metal foil such as Al foil or Cu foil is continuously cut into a plurality of strips, An object of the present invention is to provide a nulitter capable of obtaining a sheet-like material having excellent quality without flare and camber.

[Means for Solving the Problems] In the structure of the present invention for achieving the above object, a pair of rotating shafts arranged in parallel to each other and one rotating shaft of the rotating shafts are arranged at an interval. A plurality of annular thick blades, the other rotating shaft of the rotating shaft, a plurality of annular thin blades arranged at intervals, and, and the peripheral side surface of the thick blade and the peripheral side surface of the thin blade. In the slitter of the sheet-like material brought into contact with each other, (a) the plurality of thick blades are arranged alternately with a portion having a wide arrangement interval and a portion having a narrow arrangement interval of the thick blades. For each,
The thin blades are arranged one by one, and (c) each of the pair of thin blades is in close contact with the peripheral side surface of the opposing thick blade by pressing the vicinity of the blade edges of the thin blades in a direction of expanding each other. And a pressing force adjusting unit that adjusts the pressing force of the blade edge on the thick blade. (D) The strip to be the product is narrowed at the portion where the arrangement interval of the thick blade is wide. The part is characterized in that strips to be scraps are manufactured.

In this case, the pressing force adjusting means includes a pair of sleeves that are inserted into the rotating shaft and have tapered surfaces on respective opposing surfaces, a taper ring that is inserted between the sleeves, and an inner diameter that is substantially equal to the outer shape of the sleeve. It is preferable that the outer cylinder sleeve has an outer cylinder sleeve and a set screw that is screwed to the outer cylinder sleeve and presses the taper ring.

In addition, the pressing means and the pressing force adjusting means are combined, and the movement adjustment in the rotation axis direction is provided on the rotation axis between the thin blades corresponding to the portion where the arrangement interval of the thick blades is wide. It is more preferable to use a magnet provided at the end of the pressing force adjusting ring.

The thick blade and the thin blade referred to in the present invention are determined by their respective blade thicknesses. In contrast to a thick blade having a constant thickness, the thin blade means that the thickness thereof is thinner than that of the thick blade. However,
In the thick blade of the present invention, the deformation amount when the blade edge is pressed in the rotation axis direction of the blade may be smaller than the deformation amount when the thin blade is similarly pressed. Further, as the material of the thick blade and the thin blade, any known material can be used, but it is possible to obtain a sharp and beautiful cut surface by pressing the peripheral side surface of the thin blade against the peripheral side surface of the thick blade with a constant pressing force. Therefore, it is preferable that the material of the thick blade is hard and hard to be deformed, and the material of the thin blade is easily elastically deformed. Specifically, tool steel, high speed steel, super steel, ceramics, etc. can be used for the material of the thick blade, and tool steel, high speed steel, etc. can be used for the material of the thin blade. In this case, when both blades are made of the same material, the hardness is selected so that the difference in hardness may occur between the same materials. When using the above-mentioned material, the thickness of the thick blade is not particularly limited, but the thickness of the thin blade is 0.1 to
The thickness of 1.0 mm is preferable in that a good bending elastic force with respect to a thick blade can be obtained.

Hereinafter, the content of the present invention will be specifically described with reference to the drawings showing an embodiment thereof.

FIG. 1 is a cross-sectional view of a cutting part of a slitter of a sheet material according to the present invention. A metal foil sheet 21a is being continuously drawn in a direction perpendicular to the paper surface by a take-up device (not shown).
Shows a state in which a plurality of annular thick blades 4d and annular thin blades 3b are used for cutting.

In the figure, rotating shafts 1 and 2 are arranged in parallel to each other with a metal foil sheet 21a interposed therebetween, and at least one of the rotating shafts is positively rotated by a drive device (not shown). A plurality of annular thick blades 4d and annular thin blades 3b are fixed to each of the rotary shafts at regular intervals. That is, in the rotary shaft 2, between the plurality of thick blades 4d that have both edges of the blade edge substantially perpendicular to the surface of the sheet-like material, the axial length is two types, long and short. The ring-shaped spacers 15 and 16 are alternately inserted and fastened with nuts (not shown) provided at both ends of the rotary shaft 2 to fix the plurality of thick blades to the rotary shaft 2 and the thick blades 4d. L1 having a wide arrangement interval and L2 having a narrow arrangement interval are alternately formed.

On the other hand, on the rotary shaft 1, a pair of annular thin blades 3b, whose both edges are the same as the thick blade 4d, are formed on the spacer ring.
A narrow portion of the rotary shaft 2 through a spacer ring 14 that is shorter than the axial length of 15 by the thickness of two thin blades.
It is fixed so as to be sandwiched between L2. In addition, 23a ~ 2
6 is a fixing means for the thin blade 3b and a means for adjusting the contact pressure of the thin blade 3b with respect to the thick blade 4d, a pair of sleeves 23a, 23b having tapered surfaces, and at least one frustoconical shape inserted in the tapered surfaces. Taper ring 24 and sleeves 23a, 2
3b and an outer cylinder sleeve 25 having an inner diameter substantially equal to the outer diameter of 3b. A set screw 26 screwed into the central portion of the outer cylinder sleeve 25 is screwed in, and the taper ring 24 is tightened in the radial direction of the rotary shaft 1. The sleeves 23a and 23b are expanded in the axial direction thereof to fix the thin blade 3b to the spacer ring 14, and the contact pressure of the thin blade 3b to the thick blade 3d is adjusted. The total length of the pair of sleeves 23a, 23b when the pair of sleeves 23a, 23b are expanded in the axial direction is the spacer ring.
It is set to be substantially equal to the total length L3 of 16 and the blade thickness of the two thick blades 4d. Therefore, in this embodiment, the length L1 of the wide portion and the total length L3 of the blade thicknesses of the two thick blades 4d correspond to the cutting width of the metal foil sheet 21a to be the product, and the narrow portion L2 is the cutting waste. It corresponds to the cutting width of.

The thick blades 4d and the thin blades 3b have a meshing depth H with each other, but are not particularly limited, but in the case where the thickness of the sheet-like material to be cut is 0.5 mm or less, the range is 0.2 to 0.5 mm. It is set by appropriately adjusting the outer diameters of the two blades or the inter-axis distance of the rotary shafts so that the inside of the blades becomes inside.

Further, 5 is a ring-shaped disc spring which is a pressing means for pressing the pair of thin blades 3b against the respective thick blades 4d, and the inner peripheral portions of the two disc springs 5 are in contact with each other, and Each thin blade 3b is mounted with its outer peripheral portion in contact with the vicinity of the blade tip, which is the tip of each thin blade 3b. In this way, the outer peripheral portion of the disc spring 5 presses the blade edge of the thin blade 3b against each peripheral side surface of the opposing thick blade 4d by the repulsive force of the spring itself. Of these, in particular, the blade tip is always brought into close contact with the peripheral side surface of the thick blade 4d.

The strength of the pressing force due to the repulsive force of this spring is a pressing force that takes into consideration the outer diameter of the blade and the cutting property of the metal foil sheet, that is, a good cutting surface can be obtained, and the peripheral side surface of the thick blade and the thin blade that make mutual contact It is preferable to set the pressing force to such an extent that does not wear much. However, in reality, it is difficult to change and set the pressing force each time depending on the thickness and rigidity of the sheet to be cut, which changes individually. Therefore, as a means for adjusting the pressing force of the thin blade 3b against the thick blade 4d, the thin blade 3b is firmly pressed in advance by the disc spring 5 against the thick blade 4d, and the thin blade 3 pressed against this is stopped. By gradually screwing the taper ring 24 in the direction of the thin blade by screwing the screw 26 into the outer sleeve 25, the pressing force of the thin blade 3b against the thick blade 4d is gradually decreased from the maximum value, and the set screw is set at the appropriate value. It can be easily adjusted by fixing 26.

Next, FIG. 2 is a view showing another embodiment example of the thin blade pressing means, and FIG. 3 is a view showing an embodiment example in which the pressing means and the pressing force adjusting means are combined.

The one shown in FIG. 2 uses an annular one-sided blade 6 as a thin blade, and in particular, an elastic force possessed by the one-sided blade 6 itself is used without using a pressing means by another member such as a disc spring. The blade 6 is always pressed against the thick blade 4d. That is, the pair of overhanging blades 6 has a shape in which the peripheral side surfaces 6a thereof have a slight inclination like the disc spring 5, and as shown in FIG. After being inserted into the narrow portion L2 so that each peripheral side surface 6a is substantially perpendicular to the rotary shaft 1, the spacer ring 17 is tightened with a nut (not shown) provided at the shaft end.
Thick blade with the blade tips of the overhanging blade 6 facing each other as in the case of FIG.
It is always in close contact with the peripheral surface of 4d.

According to such an embodiment, since the blade edge of the thin blade overhanging blade 6 is always in close contact with the peripheral side surface of the thick blade 4d, the metal foil sheet 21a can obtain a sharp and beautiful cut surface and Since the pressing force of the striking blade 6 against the blade 4d is obtained by the elastic force of the striking blade 6 itself, the width of the sheet-like material 21b to be the cutting waste can be made narrower than the pressing means of FIG. The yield of sheet material can be increased.

Further, in FIG. 3, a magnet 8 is used as a pressing means for the thin blade 3b, a spacer ring 10 provided with a threaded portion 22 on the outer peripheral surface, and a pressing force adjusting ring 9 screwed with this threaded portion. And a magnet 8 embedded in the side surface of the ring, and by rotating the pressing force adjusting ring 9 to adjust the distance to the thin blade 3b, the magnetic force, which is the pressing force of the thin blade 3b against the thick blade 4d, is generated. The suction power is adjusted.

According to such an embodiment, the thin blade 3b with respect to the thick blade 4d
The pressing force of is that the rotary shaft 1 side of the thin blade 3b is constrained by the spacer ring 10 and the blade tip side is free, so that the attractive force of the magnet 8 is the same as that of FIG. It works so as to always be in close contact with the peripheral surface of the blade 4d. Therefore, the pressing force of the thin blade 3b against the thick blade 4d can be easily adjusted according to the sharpness of both blades, and a sharper and more beautiful cut surface can be obtained than when the pressing means of FIG. 2 is used. Further, the pressing force can be adjusted not only by reducing the pressure as compared with the setting as in the embodiment of FIG. 1, but also by increasing or decreasing the pressure. Furthermore, as the thickness of the thin blade,
Since it is possible to use a thinner blade than the one-sided blade 6 in the figure,
The width of the sheet-like material 21b serving as cutting waste can be further reduced.

The sheet material that can be cut with the slitter of the present invention as described above includes, in addition to the Al foil, the metal foil sheet such as Cu foil, a synthetic resin film, paper, and a sheet material in which these are laminated on each other. Of course, it can be preferably applied.

[Operation] According to the slitter for sheet-like material of claim (1) configured as described above, the pressing force of the thin blade against the thick blade is such that the blade edge of the thin blade is always in close contact with the peripheral side surface of the opposing thick blade. Therefore, it is possible to manufacture a product having a sharp and beautiful cut surface without flare or camber on the cut surface of the cut sheet.

In this case, in the arrangement interval of the thick blades, the sheet-like material located in the wide area becomes a product cut into a plurality of strips, and the sheet-like material located in the narrow area is discarded as waste.

[Embodiment] In the slitter for sheet material according to the present invention constructed as shown in FIG. 1, the rotary shaft 1 is made of tool steel (SKD1).
In 1), L2 is 5m for thin blade 3b with outer diameter of 60mm and blade thickness of 0.5mm.
m and L3 are arranged at an arrangement interval of 30 mm, while the rotating shaft 2 is made of super steel (tungsten carbide cobalt type)
With a thick blade 4d with an outer diameter of 60 mm and a blade thickness of 2 mm, L2 is 2 mm and L1 is 26
It was fixed to be mm.

The shaft diameters of the rotating shafts 1 and 2 are both 30 mm, and the distance between the shafts is 59.7 mm.
(Therefore, the engagement depth H between the thin blade 3b and the thick blade 4d is 0.3 mm). The disc spring 5 is made of spring steel (SUP10; chrome-vanadium spring steel) with an outer diameter of 56 mm and an inner diameter of 36 mm.
As shown in FIG. 1, two sheets having a thickness of 2 mm and a thickness of 2 mm were mounted back to back between the thin blades 3b.

A copper foil having a thickness of 40 μm was cut into the slitter having the above structure at a line speed of 30 m / min. After the start of operation, the cut surface of the copper foil for about 1 to 2 hours was sharp and beautiful, and the sharpness of both blades was good, but after 2 to 2.5 hours the placement interval L2
In the copper foil located in the part of, the cut surface became rough and minute burrs began to be generated, and the height of the burrs increased more and more. After 3 hours, the operation was stopped and the blade surface of the thin blade 3b was observed. As a result, a burr-like protrusion 3c having a height of 40 to 50 μm was formed on the contact surface with the thick blade 4d as shown in FIG. .

Therefore, the set screw 26 is turned to rotate the pair of sleeves 23a and 23b.
Was slightly slid in the direction of the thin blade 3b, the contact pressure of the disc spring 5 on the thick blade 4b of the thin blade 3b was slightly relaxed, and the operation was restarted. After 3 hours, the operation was stopped again and the blade surface was examined. As a result, no protrusions were found on the blade surface of the thin blade 3b.
There was no change in the cut surface of the copper foil located at the position of the arrangement interval L3 cut on the 4d side, and a sharp and beautiful smooth cut surface was obtained.

[Advantage of the Invention] In the slitter of the sheet-like material according to claim 1, a plurality of thick blades are arranged on one rotating shaft so that a portion having a wide arrangement interval and a portion having a narrow arrangement interval are alternately formed. Each of the narrow blades is mounted so that the peripheral side surfaces of the pair of thin blades fixed to the other rotating shaft are in contact with the peripheral side surface of the thick blade, while the pair of thin blades respectively have their cutting edges. Since a pressing means for pressing the vicinity in the direction of expanding each other to bring the blade edge into close contact with the peripheral side surfaces of the opposing thick blade, and a pressing force adjusting means for adjusting the pressing force of the blade edge to the thick blade are provided, The effect described in 1 can be obtained.

Unlike conventional slitters, which have a meshing gap between thick blades, the cutting edge of the thin blade is always in close contact with the facing peripheral surface of the thick blade while cutting a sheet-like material, so a sharp cutting edge is always provided between the thick blade and the thin blade. A surface can be formed.

Since the pressing force of the blade edge of the thin blade can be easily adjusted according to the physical properties of the sheet material to be cut, unlike the conventional slitter, the blade edge of the thin blade is less likely to wear.

Therefore, even if the sheet material to be cut is made of a soft metal foil such as Al foil or Cu foil, it is possible to create a sharp and beautiful sheet without flare, camber, burr, etc. The strips can be manufactured simultaneously and easily.

Further, the inventions of claims (2) and (3) further include a sleeve, a taper ring, an outer cylinder sleeve, a magnet, etc. as means for adjusting the pressing force of the thin blade against the thick blade in addition to the invention of the above-mentioned claim (1). Since it is used and pressed with an appropriate contact pressure for cutting, a beautiful sheet-like object having a sharper and smoother cut surface can be obtained.

[Brief description of drawings]

1 to 3 are cross-sectional views of a main part of a sheet-like material slitter according to the present invention, and FIG. 1 is a vertical cross-sectional view of a cutting part,
FIG. 2 is a vertical cross-sectional view of another embodiment of the thin blade pressing means, and FIG. 3 is a vertical cross-sectional view of the embodiment in which the pressing means and the pressing force adjusting means are combined. 4 to 6 are longitudinal sectional views of a cutting portion of a conventional slitter, FIG. 4 is a Goebel type, FIG. 5 is a gang type, and FIG. 6 is that of FIGS. 5 and 6. It is an improved form of the slitter. FIG. 7 is a partially enlarged view of the cutting portion of FIG. Explanation of symbols in the drawings 1: Rotating axis 2: Rotating axis 3a, 3b, 6: Thin blade 3c: Protrusions 4a, 4b, 4d: Thick blade 4c, 6a: Side surface 5: Disc spring (pressing means) 8: Magnet (Pressing means) 23a, 23b: Sleeve 24: Taper ring 25: Outer cylinder sleeve 26: Set screw 21a: Sheet-like material (product) 21b: Sheet-like material (dust) l: Gap L1: Wide area L2: Narrow area

Claims (3)

[Scope of utility model registration request] 1. A pair of rotating shafts arranged parallel to each other,
A plurality of annular thick blades arranged at intervals on one of the rotating shafts, and a plurality of annular thin blades arranged at intervals on the other rotating shaft of the rotating shaft, And, in the slitter of the sheet-like material in which the peripheral side surface of the thick blade and the peripheral side surface of the thin blade are brought into contact with each other, (a) the arrangement of the plurality of thick blades is such that a wide area and a narrow area are alternately arranged. (B) A pair of the thin blades are arranged in each of the portions where the thick blades are arranged at narrow intervals, and (c) In each of the pair of thin blades, the vicinity of the blade edge of the thin blade is expanded. A pressing means for bringing the blade edge into close contact with the peripheral side surfaces of the thick blade facing each other by pressing in the opening direction, and a pressing force adjusting means for adjusting the pressing force of the blade edge on the thick blade are provided, (d) the above A strip that will be the product will be placed on the part with a wide spacing Slitter wherein the narrow portion, sheet, characterized by producing a strip which becomes scrap. 2. The pressing force adjusting means has a pair of sleeves which are inserted into the rotary shaft and have tapered surfaces on respective opposing surfaces, a taper ring which is inserted between the sleeves, and an outer shape of the sleeve. The slitter according to claim 1, comprising an outer sleeve having an equal inner diameter and a set screw screwed to the outer sleeve to press the taper ring. 3. The pressing means and the pressing force adjusting means are provided on a rotary shaft between the thin blades corresponding to a portion where the thick blades are arranged at wide intervals, and are movable and adjustable in the rotary shaft direction. The slitter according to claim 1, wherein the slitter is a magnet provided at an end of the pressure adjusting ring.