JPH10244487A - Cutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter device of shear-cut system which can securely shear-cut and finishing cutting surfaces sharply and elegantly. SOLUTION: A first circular single shaved blade 16 of a cutter device are supported on a first rotating shaft 36 through a holder 34, and the corresponding number of second circular single shaved blade 18 are installed fixedly on a second rotating shaft 40 with their edge faces arranged in axial direction. In the holder 34 of the first circular blade 16, a ring spring 38 is assembled, and the first circular blade 16 is energized from its back face by its contracting force so as to press it against the blade face of the second circular blade 18. Also each circular blade cut both surfaces of a thick sheet, by approx. equal length, in thickness direction, and can perform a cutting symmetrical with respect to the lateral direction of a cutter. Thus a product excellent is winding style can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device for continuously cutting a sheet running between two blades by sliding a pair of circular single-sided blades into contact with each other.

[0002]

2. Description of the Related Art Recently, a long tape has been required as a narrow carrier tape used for assembling electronic equipment and the like. In this case, it is long and wide (for example, 1 m
Since it is impossible to cut the film wound as described above into narrow widths, slitters using various cutting methods such as a shear cut method, a leather cut method, and a score cut method have come to be used. Among these methods, the shear cut method is superior in terms of cutting accuracy and the like, and is widely used.

[0003] The shear cut method is the same principle as scissors,
This is a method in which the upper and lower two circular blades are cut into a set when they are meshed. In this method, there are block cutting (short section shearing) and shear cutting (shear cutting with a single-sided blade) based on the shape of a circular blade.

As shown in FIG. 7, block cutting is a method in which a sheet 112 traveling between the two blades is cut by a pair of sliding cylindrical blades 110a and 110b. Wrapping (depth of engagement)
And clearance are important factors in determining the quality of cutting. However, in cutting a thin sheet, it is difficult to obtain an optimum clearance because there is a limit in the manufacturing accuracy of a cylindrical blade, a spacer ring, a holding ring, and the like, and inconveniences such as generation of burrs at a cut portion are likely to occur. One of the shear cuts is, as shown in FIG.
a and a cylindrical blade 114b,
Is cut with zero clearance while always contacting the cylindrical blade 114b by a spring or the like, so that the cut surface is very sharply finished. However, when cutting the thick sheet 118, since the circular one-sided blade 114a cuts the sheet on the cylindrical blade 114b, the left and right sides of the blade cannot be cut under the same conditions, so the edge height phenomenon as shown in FIG. H was generated, and there was a problem that the cut material was meandered at the time of winding and the winding cross section was not uniform. Further, as shown in FIG. 10, when cutting the multilayered electrode member 120 or the like, the conductive member 122 of the intermediate layer is stretched by receiving a shearing force in order to cut it from one direction with the circular one-sided blade 114. There is also a problem that good cutting cannot be obtained as a product due to inconvenience.

[0005]

SUMMARY OF THE INVENTION According to the present invention, in order to solve the above-mentioned problems, a thin sheet can be cut with a good finish, and a thick sheet must have a non-uniform winding cross section upon winding after cutting. Another object of the present invention is to provide a cutter device that can obtain a good cut surface without deforming the cut surface under the influence of shearing force even in a multilayer thick sheet.

[0006]

According to the present invention, a plurality of first circular single-sided blades are mounted on one of a pair of rotating shafts parallel to each other via a holder, and the first circular single-sided blade is mounted on the other rotating shaft. The number of the second circular overhanging blades corresponding to the number is mounted, a ring spring is interposed between the first circular overhanging blade and the holder, and the first circular overhanging blade surface is urged in the axial direction by the ring spring. A gist of the present invention is a cutter device that slides on a two-circle one-sided blade surface and continuously cuts a sheet traveling between the two blades.

Further, the first and second circular one-sided blades have a smooth blade surface.

In these constructions, a pair of first and second circular single-sided blades are cut at the center of the sheet thickness by cutting from both sides of the sheet in both thin and thick sheets. In addition to being sharp, a good cut surface can be obtained without irregularities in the winding cross section when winding after cutting the sheet.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a slitter 10 equipped with the cutter device of the present invention. The slitter 10 includes a supply shaft 14 for a wide sheet 12 such as a plastic film, a first circular one-side blade 16 and a second circular one-side blade 18 for slitting the wide sheet 12 in the longitudinal direction.
, A supply roll 22a, 22b for supplying the wide sheet 14 to the cutter device 20, take-up rolls 26a, 26b, and take-up rolls for sorting the narrow sheets 24a, 24b cut by the cutter device 20 up and down. 27a, 27b, a first winding shaft 28a for winding up the pulled narrow sheets 24a, 24b,
And a second winding shaft 28b. The wide sheet 12 and the narrow sheets 24a and 24b pass through these members, the guide rolls 30a to 30c, and the tension adjusting roll 32.

FIG. 2 shows a cutter device 20 according to the present invention. The first circular single-sided blade 16 has a first rotating shaft 36 rotated by a motor or the like (not shown) via a holder 34.
The blades are adjusted and mounted at predetermined intervals at positions corresponding to a narrow sheet width Z for cutting a wide sheet having a width Y with the blade surfaces aligned in the axial direction. Holder 3
A ring spring 38 is incorporated in the first circular single-sided blade 16 due to its contracting force.
Is axially urged from the back of the blade surface.

The second circular one-sided blades 18 are fixedly provided on the second rotary shaft 40 by the number corresponding to the first circular one-sided blades 16 with their blade surfaces aligned in the axial direction.

As described above, the first rotating shaft 36 to which the first circular one-sided blade 16 is attached and the second rotary shaft 40 to which the second circular one-sided blade 18 is attached are arranged in the direction in which the blade surfaces abut. The blade surface of the first circular one-sided blade 16 is pressed against the blade surface of the second circular one-sided blade 18. As a method for contacting the two blades, in FIG. 2, first, the position is adjusted in the direction A to determine the wrap (meshing depth). The wrap is
Usually, 0.1 to 0.5 mm is preferable, and 0.2 to 0.4 mm
Is more preferred. Next, the position is adjusted in the direction B to adjust the contact pressure between the two blades. The contact pressure of both blades is usually 300 to 1
500 g is preferable, and 500 to 1000 g is more preferable.

The first rotating shaft 36 and the second rotating shaft 40 rotate in a direction to bite the sheet. The number of rotations may be set arbitrarily according to the material, thickness, sharpness, etc. of the sheet. Also, the first
The rotation speed of the rotation shaft 36 and the second rotation shaft 40 are preferably the same, but may be relatively different for thin sheets and the like.

FIG. 3 is an enlarged view showing a state in which the first circular one-sided blade 16 and the second circular one-sided blade 18 are in contact with each other. In the cutter device, a ring spring 38 is interposed between the holder 34 and the first circular one-sided blade 16 attached to the first rotation shaft 36 via a holder among a pair of rotation shafts parallel to each other. The first circular one-sided blade 16 is pressed in the axial direction C by the contraction force of 38, and the blade surface 16a of the first circular one-sided blade 16 is attached to the second rotating shaft 40. The lap L is disposed at 18a, and when the rotation shaft rotates, the two blade surfaces slide, and the sheet traveling between the two blades is continuously cut by shearing.

The first circular one-sided blade 16 thus adjusted
The second circular single-sided blade 18 actually has a clearance angle θ, as shown in FIG. Therefore, when the rotating shafts 42a and 42b of both blades are parallel, FIG.
As shown in (a), the two blade surfaces cut at point D on the upstream side in the running direction of the wide sheet 12 in the lap area W, and cut, and then point contact at point E on the downstream side.

When the narrow sheets 24a and 24b are actually cut as shown in FIG. 5A, while the narrow sheet 24a travels between the cut points D and E,
As shown in FIG. 5B, the clearance angle θ of the one-sided blade on the upper side of the drawing
When the vehicle reaches the point E and reaches the point E, it travels while swinging right and left again so as to hit the contact point between the two blades.
Further, while traveling between the cut points D and E, the narrow sheet 24b escapes to the position of the clearance angle θ of the one-sided blade on the lower side of the drawing as shown in FIG. When it reaches E, it travels while swinging left and right so as to hit the contact point of both blades again. Narrow width seat 2 that runs while swinging left and right
4a and 24b are swayed up and down as much as they have escaped to the clearance angle.
In some cases, the cut surfaces a and 24b are shaved to generate cutting powder and the like.

Therefore, as shown in FIG. 6B, the case where both the first circular one-sided blade 16 and the second circular one-sided blade 18 are smooth blade surfaces 16b, 18b having no clearance angle. Since the two blades are in surface contact with the lap surface 44 of the two blades, there is no gap between the two blades, and the narrow sheets 24a and 24b cut at the point D shown in FIG. The problem that the cut surface is scraped off at the point E without swinging right and left and up and down during the process does not occur. When a very beautiful cut surface is required, it is preferable to use a pair of circular single-sided blades having such smooth blade surfaces 16b and 18b in combination.

In the present invention, the supply rolls 22a, 22a
2b sandwiches and holds the wide sheet 12, and the two blades 16, 1
The sheet traveling between 8 is continuously cut. Each of the supply rolls 22a and 22b is a known cylinder (not shown).
The pressure can be adjusted using a roll clamping pressure adjusting mechanism or the like according to the use. The roll clamping pressure is preferably from 10 to 50 kg / m, more preferably from 20 to 40 kg / m.

The narrow sheet 2 cut by the two blades 16 and 18
4a and 24b, the narrow sheet 24a which is distributed every other up and down and taken up is taken up by a take-up roll 26.
a, 26b, and the narrow sheet 24b is taken up by the take-up rolls 27a, 27b. The take-up rolls 26a and 26b and the take-up rolls 27a and 27b are connected to each other, and can be moved up and down by a cylinder mechanism (not shown). Take-up roll 26a
And 26b are moved upward, and the take-off rolls 27a and 27b are moved downward, so that the rolls 26a and 27a are spaced apart in the vertical direction, and the cut narrow sheets 24a,
4b can be immediately distributed up and down from point D, which is the above-mentioned cutting point, and it is possible to prevent the generation of cutting powder and the like by contacting both blades at point E.

As shown in FIG. 1, the supply rolls 22a and 22b of the wide sheet 12 and the narrow sheet 24
It is important that the interval X between the take-up rolls 26a, 27a of the a, 24b be as short as possible. The interval X is determined by considering the outer diameters of the first rotating shaft 36 and the second rotating shaft 40 having the circular single-sided blade and the outer diameters of the supply rolls 22a, 22b and the take-up rolls 26a, 27a. It is preferably designed as a distance.

As shown in FIG. 8, the conventional circular single-sided blade 1
In the cutting by the combination of the cylindrical blade 14a and the cylindrical blade 114b, the sheet 118 before cutting is usually the lower blade.
The position of the sheet 118 is fixed because the circular one-sided blade 114a cuts in a state where the sheet is placed on the sheet 14b. However, when both blades are circular one-sided blades as in the present invention, the position of the sheet is determined. Not. Therefore, the interval between the supply rolls 22a, 22b of the wide sheet 12 and the take-up rolls 26a, 27a of the narrow sheet 24a, 24b is made as short as possible.
And the nip pressure of the supply rolls 22a and 22b is strengthened,
It is important that the sheet traveling on the cutter device 20 can be held so that it does not swing up and down, left and right, or shift.

The outer peripheral surfaces of the supply rolls 22a and 22b and the take-up rolls 26a and 27a are preferably covered with a soft material such as rubber having flexibility.

[0023]

As described above, when using the cutter device of the present invention, since the cutting is performed by a pair of circular single-sided blades, it is possible to reliably realize the cutting by shearing. When a thick sheet is cut, a pair of circular blades cuts the same distance from both sides of the sheet in the thickness direction by shearing, so that the left and right sides of the blade can be cut almost symmetrically, and the edge height etc. A good winding appearance that does not occur can be obtained. In addition, even if the object to be cut is a multilayer thick sheet in which the conductive material is laminated on the intermediate layer, a good product in which the conductive material in the intermediate layer is not stretched and deformed under the influence of the shearing force. Can be manufactured. Furthermore, when the circular one-sided blade surface is a smooth blade surface having no clearance angle, the narrow sheet once cut at the upstream end of the circular one-sided blade comes into contact with the blade surface again at the downstream end and cuts. It is possible to obtain a product of excellent quality in which generation of powder is suppressed and foreign matter is suppressed.

[Brief description of the drawings]

FIG. 1 is a side view showing a slitter equipped with a cutter device of the present invention.

FIG. 2 is a cross-sectional view of the cutter device of the present embodiment.

FIG. 3 is an enlarged view showing a contact pressure state between a first circular one-sided blade and a second circular one-sided blade.

FIG. 4 is an explanatory view showing a state where a pair of circular single-sided blades are in contact with each other.

FIG. 5 is an explanatory diagram showing a state in which a cut narrow sheet travels at a clearance angle.

FIG. 6 is an explanatory diagram showing a state in which a first circular one-sided blade and a second circular one-sided blade cut approximately the same distance from both sides of a sheet.

FIG. 7 is an explanatory diagram showing a cutting state of a conventional block cut.

FIG. 8 is an explanatory view showing a cutting state of a conventional circular one-sided blade and a cylindrical blade.

FIG. 9 is an explanatory diagram showing a state in which a cutting edge is formed by a conventional circular one-sided blade and a cylindrical blade to generate a rim height.

FIG. 10 is an explanatory view showing a state where a conductive material of a multilayer sheet having a conductive material present in an intermediate layer is stretched and cut by a conventional circular one-sided blade and a cylindrical blade to cause local deformation. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slitter apparatus 12 Wide sheet 16 1st circular one-sided blade 18 2nd circular one-sided blade 20 Cutter device 22a, 22b Supply roll 24a, 24b Narrow sheet 26a, 26b Take-up roll 27a, 27b Take-up roll 34 Holder 36 1st rotation Shaft 38 Ring spring 40 Second rotating shaft 110a, 110b Block-cut cylindrical blade 114a, 114b Conventional circular single-sided blade, cylindrical blade 118 Thick sheet A First rotating shaft lap adjustment direction B First rotating shaft blade surface contact pressure adjustment Direction C Blade surface contact pressure direction D Blade surface upstream contact point E Blade surface downstream contact point H Edge phenomena L Lap W Lap area X Supply roll and take-up roll interval Y Wide sheet width Z Narrow sheet width θ Relief angle

Claims (2)

[Claims] 1. A plurality of first circular overhanging blades are mounted on one of a pair of rotating shafts parallel to each other via a holder, and the second rotating shaft has a number of second circular overhanging blades corresponding to the first circular overhanging blade. A single-sided blade is mounted, a ring spring is interposed between the first circular one-sided blade and the holder, and the first circular one-sided blade is axially urged by the ring spring to slide on the second circular one-sided blade. A cutter device for continuously cutting a sheet traveling between both blades by moving the cutter. 2. The cutter device according to claim 1, wherein the first and second circular one-sided blades have a smooth blade surface.