JP2001334411A - Slitter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem of inevitably high cost of a cutter as it is necessary to improve strength of the cutter by working diamonds since abrasion of the cutter is violent as its knife edge head end part is acute angled in the case of cutting a base material by a conventional slit cutter and of hard maintenance of it as there occurs a partial defect of the cutter, etc. SOLUTION: A slitter device to cut the base material 1 by being furnished with at least one set of the cutters 4 to be rotationally driven and arranging the cutters 4 against each other so that axes of rotation of the both cutters come to be materially in parallel with each other constitutes its characteristic feature of making at least one of sides constituting a knife edge angle on a cutting plane including a shaft 2 is a curved line on either of the cutters.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for cutting and manufacturing, for example, an electronic component or an electrode plate of a secondary battery (in particular, its positive electrode plate).

[0002]

2. Description of the Related Art Conventionally, on a positive electrode plate of an alkaline secondary battery such as a nickel-cadmium secondary battery or a nickel-hydrogen secondary battery, a three-dimensional porous metal such as foamed nickel is filled with an active material paste, dried and dried. A paste-type electrode plate that is rolled and then cut into a predetermined size is used. Then, in order to form the above-mentioned paste type electrode plate into a predetermined size, the original electrode plate was cut using a slitter or a punching press.

For example, in Japanese Patent Application Laid-Open No. H11-297315, a pair of slit blades having an acute edge angle are disposed opposite to each other on the upper surface and lower surface of an electrode plate, and are moved on the electrode plate while rotating at high speed. Thus, there has been disclosed a slitter device that can be manufactured by cutting an electrode base plate into a predetermined size.

[0004] Such a conventional slitting apparatus is shown in FIG.
As shown in FIG. 1, a pair of upper and lower shafts 2 to be rotated are provided. A pair of upper and lower shafts 2 are provided with a pair of slit blades 1 having an acute edge angle for cutting the electrode plate 10.
4. Collar 3 is attached.

[0005]

However, in such a conventional slitter apparatus, the cutting edge of the slit blade 14 is sharp at the time of cutting the electrode plate 10, so that the cutting edge is easily chipped, and the shape of the cutting edge is reduced. In some cases, cutting is performed by a defective slit blade 14, and as a result, the edge of the original electrode plate may be damaged.

In addition, in the conventional slitting apparatus, since the slit blade is so worn, it is necessary to embed diamond in the cutting edge to increase the strength of the blade, and the cost of the blade is inevitably increased. Maintenance of the knife was also difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a slitter device in which the life of a blade is improved and the maintenance is easy, taking the above conventional problems into consideration.

[0008]

Means for Solving the Problems The first invention (claim 1)
Is a slitter device that cuts a substrate by arranging a first blade that is driven to rotate and a second blade that is driven to rotate, with the rotation axes of both blades facing each other substantially in parallel. (1) at least one side of the cutting surface of the first blade, which includes the rotation axis of the first blade, that constitutes the included angle of the first blade; and / or (2) the second blade. A slitter device characterized in that at least one side of the cutting surface of the second blade, which includes the rotation axis of the second blade, forms a bevel angle of the second blade, is a curved line.

According to a second aspect of the present invention (corresponding to claim 2), a cutting edge of the first blade at a cutting surface of the first blade including a rotation axis of the first blade is formed. Is a circular arc, the other side is a straight line, and includes the rotation axis of the second blade, one side of the cutting surface of the second blade, which constitutes the included angle of the blade of the second blade Is an arc,
The other side is a straight line, and the side of the arc of the first blade and the side of the arc of the second blade are on different sides with respect to the surface of the base material where the cutting is to be performed. A first aspect of the present invention is a slitter according to the present invention.

A third aspect of the present invention (corresponding to claim 3) has a support portion for supporting the base material, wherein the second blade is substantially provided with: (1) a thickness of the base material; (2) provided on the same side with respect to the cut surface where the cutting of the base material is to be performed, and provided on the side surface of the first blade. A first support member for supporting the base material, and a support portion for supporting the base material, wherein the first cutter is substantially opposed to the first cutting tool by the thickness in the thickness direction of the base material. And (2) second substrate support means provided on the same side with respect to the cut surface of the substrate to be cut, and provided on a side surface of the second blade. A slitter according to the first or second aspect of the present invention.

A fourth aspect of the present invention (corresponding to claim 4) has an edge portion for suppressing burrs generated at a cut portion of the base material, and substantially comprises (1) Facing away by the thickness of the base material in the thickness direction of the base material,
(2) a first burr suppressing means provided on a side surface of the first blade on the same side with respect to a cut surface of the base material to be cut, and cutting the base material; An edge portion for suppressing burrs generated in the portion, and substantially facing the first blade by (1) being separated by the thickness in the thickness direction of the substrate, (2) the substrate The first or the second, characterized by comprising a second burr suppressing means provided on the same side with respect to the cut surface to be cut, and provided on the side surface of the second blade This is a second embodiment of the present invention.

According to a fifth aspect of the present invention (corresponding to claim 5), the edge of the first burr suppressing means and / or the second burr suppressing means has an edge angle of an acute angle or a right angle. A fourth aspect of the present invention is a slitter according to the present invention.

A sixth aspect of the present invention (corresponding to claim 6) is that the thickness of the first blade and / or the thickness of the second blade is 1 mm or more and 50 mm or less. To the fifth aspect of the present invention.

According to a seventh aspect of the present invention, a radius of an arc forming one side of the first blade and / or a radius of an arc forming one side of the second blade is provided. Is a slitter device according to any one of the first to fifth aspects of the present invention, which is not less than 1 mm and not more than 50 mm.

An eighth aspect of the present invention (corresponding to claim 8) is characterized in that the overlap and / or offset between the first blade and the second blade is 0 mm or more and 0.5 mm or less. The slitter according to any one of the first to fifth aspects of the present invention.

According to a ninth aspect of the present invention (corresponding to claim 9), a first blade that is rotationally driven and a second blade that is rotationally driven are opposed to each other so that the rotation axes of the two blades are substantially parallel to each other. A slitter apparatus for cutting a substrate, wherein a cutting surface including both of the rotating shafts, a common perpendicular line of the two rotating shafts passing through the cutting edge of the first blade, and a cutting edge of the first blade. The first angle, which is an angle formed by one of the sides forming the angle, is smaller than the second angle, which is the angle formed by the common perpendicular and the other side forming the included angle of the first blade. An angle between a common perpendicular line of the two rotating shafts passing through the cutting edge of the second blade and one side of the cutting edge of the second blade, on a cutting plane including the two rotating shafts. A certain first angle is an angle formed between the common perpendicular and the other side that constitutes the included angle of the second blade. Smaller than a second angle, the a first corner of the first corner and the second tool of the first tool, a reference surface that will the cutting of the substrate is carried out,
On substantially different sides, the first corner of the first blade has a smaller angle than the second corner of the second blade, and the first corner of the second blade is: A slitter device having an angle smaller than a second angle of the first blade.

A tenth aspect of the present invention (corresponding to claim 10) has a support portion for supporting the base material, wherein the second blade is substantially provided with (1) a thickness of the base material. (2) provided on the same side with respect to the cut surface where the cutting of the base material is to be performed, and provided on the side surface of the first blade. A first support member for supporting the base material, and a support portion for supporting the base material, wherein the first cutter is substantially opposed to the first cutting tool by the thickness in the thickness direction of the base material. And (2) second substrate support means provided on the same side with respect to the cut surface of the substrate to be cut, and provided on a side surface of the second blade. A ninth aspect of the present invention is the slitter according to the present invention.

The eleventh invention (corresponding to claim 11) provides:
An edge portion for suppressing burrs generated in a cut portion of the base material, and substantially facing (1) the second blade with a distance of the thickness of the base material in a thickness direction of the base material; And
(2) a first burr suppressing means provided on a side surface of the first blade on the same side with respect to a cut surface of the base material to be cut, and cutting the base material; An edge portion for suppressing burrs generated in the portion, and substantially facing the first blade by (1) being separated by the thickness in the thickness direction of the substrate, (2) the substrate A ninth book comprising a second burr suppressing means provided on the same side with respect to the cut surface to be cut, and provided on a side surface of the second blade. It is a slitter apparatus of the invention.

A twelfth invention (corresponding to claim 12) is:
One side constituting a first corner of the first blade and / or
Alternatively, one side constituting the first corner of the second blade is a straight line, and the other side constituting the second corner of the first blade and / or the second side of the second blade. The other side constituting the corner is a curved line, wherein the slitter is any one of the ninth to eleventh aspects of the present invention.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) First, the configuration and operation of the slitter according to Embodiment 1 will be described.
The description will be given mainly with reference to FIGS.
FIG. 1A is a front view of the slitter according to the first embodiment, and FIG. 1B is a right side view of the slitter according to the first embodiment.

The cutting portion of the slitter device according to the first embodiment has a pair of upper and lower shafts 2 that are rotated in the direction of arrow B (see FIG. 1B). ,
A pair of upper and lower curved blades 4 and a collar 3 are mounted respectively. Further, the cutting edge of the curved blade 4 has an edge portion and a curved portion for cutting the substrate 1 sent in the direction of arrow A (see FIG. 1B).

In the cutting plane including the axis 2 of the curved blade 4, one side 4a forming the included angle of the curved blade 4 is an arc, and the other side 4b is a straight line. The side 4a forms the above-described curved portion, and the side 4a and the side 4b intersect to form the above-described edge portion. Moreover, the sides 4a of the curved blade 4 that are upper and lower on the paper surface of FIG. 1A are on different sides with respect to the surface on which the substrate 1 is to be cut.

The cutting edge of the curved blade 4 is composed of a curved surface portion and an edge portion, and the cutting force is concentrated on the edge portion for cutting, whereby a sharp slit with less burrs can be realized. In addition, since such a curved surface portion is provided, the cutting edge comes into contact with the base material 1 only at the edge portion, and damage to the base material 1 caused by being pushed by the cutting edge worn by frictional heat generated at the time of cutting. Is considerably suppressed.

As described above, when the cutting edge angle θ (see FIG. 8) of the tip of the blade in the conventional slitting apparatus is made acute, the cutting performance of the base material is good, but the blade is easily chipped.
If the cutting edge angle θ at the tip of the blade is made obtuse, the life of the blade will be improved, but the cutting force will be dispersed at the blade, and the cutting power of the blade will be weakened by the edge of the blade. This problem is solved.

The blade thickness t (see FIGS. 4A and 4B) of the curved blade 4 having good sharpness is in the range of 1 ≦ t ≦ 50 mm. Actually, if the blade thickness t is smaller than 1 mm, the surface may run out at the time of cutting, which may result in poor cutting. Also, if the blade thickness t is 50 mm or more,
Since the edge of the cutting edge portion is close to a right angle, cutting is performed at the surface, and the material cost of the curved blade 4 also increases.

The radius of curvature R of the curved surface portion of the curved blade 4 (see FIGS. 4A and 4B) is preferably in the range of 1 ≦ R ≦ 50 mm. In fact, if the radius of curvature R is smaller than 1 mm, the tip of the blade may be chipped.
If the radius of curvature R is larger than 50 mm, the tip of the blade may become flat. The center of the circle giving the radius of curvature R can be set arbitrarily, and if the setting position is to the right of the blade cutting edge on the paper surface as shown in FIG. 4A, the shape of the cutting edge becomes obtuse. Fig. 4
As shown in FIG. 4 (b), when the blade is located on the left side of the paper with respect to the edge of the cutting edge, the shape of the cutting edge becomes an acute angle (however, FIG.
In this case, the shape of the cutting edge is a right angle since the cutting edge is substantially on the side of the cutting edge.)

Also, represented by an overlap d1 (see FIG. 5 (a)) and an offset d2 (see FIG. 5 (b))
In FIG. 1A, the gap between the cutting edges of the curved blades 4 above and below is preferably in the range of 0 ≦ d1, d2 ≦ 0.5 mm (overlap and offset are collectively referred to as gap. There). In fact, overlap and / or
Alternatively, if the offset is smaller than 0 mm, the upper and lower curved blades 4 are in contact with each other, and thus these blades are chipped. If the overlap and / or the offset is wider than 0.5 mm, the base material 1 escapes into the gap between the curved blades 4 and cutting becomes impossible, and burrs may be generated. If the overlap d1 and the offset d2 are in the range of 0 ≦ d1, d2 ≦ 0.1 mm, more desirable effects can be obtained.

(Embodiment 2) Next, Embodiment 2
2 will be described mainly with reference to FIGS. 2A and 2B. FIG. 2A is a front view of the slitter device according to the second embodiment, and FIG. 2B is a right side view of the slitter device according to the second embodiment. The illustration of the material 1 is omitted).

The slitter device according to the second embodiment is different from the above-described slitter device according to the first embodiment in that the slitter device includes a base material supporting plate blade 5. Cutting is performed at the edge of the curved blade 4 while being sandwiched between the curved blade 4 and the substrate supporting plate blade 5. The substrate supporting plate blade 5 corresponds to the substrate supporting means of the present invention.

As described in the first embodiment, the cutting edge of the curved blade 4 is composed of the curved surface portion and the edge portion, and the cutting force is concentrated on the edge portion for cutting. Slitting becomes possible. In addition, since such a curved portion is provided, the cutting edge is only the edge portion and the substrate 1
And damage to the substrate 1 caused by being pushed by the blade edge worn by frictional heat generated at the time of cutting is considerably suppressed.

The slitter according to the second embodiment is a further improved device, which comprises a curved blade 4 having a blade edge formed by an edge portion and a curved surface portion, and a curved surface portion 5b provided on a side surface thereof. 2 is provided in which the combination with the substrate supporting plate blade 5 is vertically opposed, and while rotating them in the direction of the arrow B (see FIG. 2B), the arrow A (FIG. 2B )) Is sandwiched between a pair of upper and lower curved blades 4 and a substrate supporting plate blade 5 to form a curved blade 4.
And cut at the edge.

The gap between the edge portion of the curved blade 4 and the supporting portion 5a of the curved surface portion 5b of the substrate supporting plate blade 5 facing the edge portion is
The thickness of the substrate 1 is adjusted so that the substrate 1 is sandwiched between upper and lower blades that differ by the thickness of the substrate 1 so that the substrate 1 can be cut accurately (the edge of the curved blade 4). The gap between the portion and the supporting portion 5a of the curved surface portion 5b of the substrate supporting plate blade 5 is
If the thickness is different than the thickness, the substrate 1 is cut without sandwiching it, resulting in the same as the above-described slitter apparatus in the first embodiment). Of course, in order for such a gap to be the thickness of the base material 1, the step between the curved surface blade 4 and the base material supporting plate blade 5 bonded together is overlapped d1 (FIG. 5A). Only) substrate 1
It should be smaller than the thickness of.

When the substrate 1 is cut by the curved blade 4, the substrate 1 is held in place by a substrate supporting plate blade in order to prevent the substrate 1 from being pushed away in a direction in which a force is applied at the time of cutting. Although the base member 5 is supported by the base member 5, the base member supporting plate blade 5 supports the base member 1 only by the support portion 5 a, so that damage caused by the base member 1 being pushed by the base member supporting plate blade 5 does not occur.

The blade thickness, the radius of curvature, and the amount of clearance between the cutting edges of the curved blade 4 with good sharpness are as described in the first embodiment.

The radius of curvature of the curved blade 4 and the substrate supporting plate blade 5 and the center of the circle having the radius of curvature need not be the same in both, as shown in FIGS. 6 (a) to 6 (c). There are various examples. FIG. 6A is an explanatory diagram for illustrating, as a first example, the center position and the radius of curvature of the curved circles of the curved surfaces of the curved blade 4 and the base material supporting plate blade 5, and FIG. 4. The radius of curvature of the curved surface portion of the substrate supporting plate blade 5 is the same, but the center positions of these curvature circles are different. FIG. 6B is an explanatory diagram for illustrating, as a second example, the center position and the radius of curvature of the curvature circle of the curved surface portion of the curved surface blade 4 and the base material supporting plate blade 5. 4. The radius of curvature of the curved surface portion of the substrate supporting plate blade 5 is different from each other, but their center positions are the same. FIG. 6C is an explanatory diagram for illustrating, as a third example, the center position and the radius of curvature of the curvature circle of the curved surface portions of the curved surface blade 4 and the base material supporting plate blade 5. 4. The center position and the radius of curvature of the curvature circle of the curved surface portion of the substrate supporting plate blade 5 are different from each other.

In this way, even if the edge angle of the blade is increased so as to extend the life of the blade, it is possible to considerably suppress the generation of burrs. Therefore, if the cutting edge angle θ (see FIG. 8) of the tip of the blade in the conventional slitter apparatus is set to an acute angle, the cutting performance of the base material is good, but the blade is easily chipped and the cutting edge angle θ of the tip of the blade is obtuse. Then
Although the service life of the cutting tool is improved, the problem that the cutting force is dispersed at the cutting edge and the force for cutting the base material by the edge of the cutting tool is reduced, so that burrs and the like are generated on the base material is solved.

(Embodiment 3) Next, Embodiment 3
Will be described mainly with reference to FIGS. 3 (a) and 3 (b). FIG. 3A is a front view of the slitter according to the third embodiment, and FIG. 3B is a right side view of the slitter according to the third embodiment. The illustration of the material 1 is omitted).

The slitter device according to the third embodiment is different from the slitter device according to the first embodiment described above in that it has a sharp edge blade 6 attached to a curved surface blade 4. 1 is cut by being sandwiched by both a pair of upper and lower curved blades 4 and a sharp edge blade 6.

As described in the first embodiment, the cutting edge of the curved blade 4 is composed of the curved surface portion and the edge portion, and the cutting force is concentrated on the edge portion for cutting. Slitting becomes possible. In addition, since such a curved portion is provided, the cutting edge is only the edge portion and the substrate 1
And damage to the substrate 1 caused by being pushed by the blade edge worn by frictional heat generated at the time of cutting is considerably suppressed.

The slitter according to the third embodiment is a further improved device. The slitter has a curved blade 4 having a curved edge portion and an edge portion, and a sharp edge provided on a side surface thereof. Two sets of the combination with the sharp edge 6 having a sharp edge 6a are provided so as to face up and down, and while rotating them in the direction of the arrow B (see FIG. 3B), the arrow A (FIG. The substrate 1 fed in the direction of (1) is cut by both the edge portion of the curved blade 4 and the sharp edge 6a of the sharp edge blade 6.

Since the gap between the edge of the curved blade 4 and the sharp edge 6a of the sharp edge 6 is adjusted to be the thickness of the substrate 1, the upper and lower curved blades differ by the thickness of the substrate 1. 4, and the sharp edge 6 can cut the substrate 1 accurately from above and below (for a method for adjusting such a gap, the curved surface blade described in the second embodiment described above). The same applies to the method of adjusting the gap between the edge portion of No. 4 and the support portion 5a of the curved surface portion 5b of the substrate supporting plate blade 5 opposed thereto).

Further, although it is inevitable that some burrs are generated during cutting, the sharp edge blade 6 can remove such burrs considerably. More specifically, for example, in FIG. 3A, burrs in the direction of arrow A1 due to being pushed from below by the curved blade 4 occur at the left end of the base material 1 cut off toward the center of the slitter device. However, such burrs are considerably removed by the sharp edge blade 6 on the upper left side of the slitter. Also, at the right end of the base material 1 cut off to the left side of the slitter device, burrs in the direction of arrow A2 due to being pushed from above by the curved blade 4 are likely to be generated. Significantly removed by the sharp edge 6 at

However, the edge angle of the sharp edge 6 is Δ
If the angle (see FIG. 3A) is smaller than 30 degrees, the cutting properties of the base material 1 are good and the generation of burrs can be suppressed, but the blade is easily chipped. When the edge angle of the sharp edge 6 is larger than 45 degrees, the life of the blade is improved, but the sharpness is deteriorated, and burrs may be generated on the cut substrate 1. In the slitter device according to the third embodiment, the sharp edge 6 is attached to the curved blade 4 so that the blade edge angle is in the range of 10 to 45 degrees, so that the sharpness is good and the life of the blade is long. The desired effect is exhibited.

The blade thickness, the radius of curvature, and the amount of clearance between the cutting edges of the curved blade 4 with good sharpness are as described in the first embodiment.

In this way, even if the edge angle of the blade is increased so as to extend the life of the blade, the generation of burrs can be considerably suppressed. Therefore, if the cutting edge angle θ (see FIG. 8) of the tip of the blade in the conventional slitter apparatus is set to an acute angle, the cutting performance of the base material is good, but the blade is easily chipped and the cutting edge angle θ of the tip of the blade is obtuse. Then
Although the service life of the cutting tool is improved, the problem that the cutting force is dispersed at the cutting edge and the force for cutting the base material by the edge of the cutting tool is reduced, so that burrs and the like are generated on the base material is solved.

By the way, the blade thickness t and the gap amount d (= d1
Or perform a cutting experiment by changing d2) variously,
The results as shown in Table 1 were obtained (in the evaluation column in the table, ◎ means extremely good, は means good, and × means bad). As a result, as described in the first to third embodiments, it has been confirmed that the present invention has a remarkable effect. In this cutting experiment, the radius of curvature R of the curved blade was set to 3 mm, and the center of a circle having such a radius of curvature was assumed to be substantially on the side of the cutting edge of the blade as shown in FIG. .

[0048]

[Table 1]

As described above, the slitting apparatus of the present invention
For example, a cutting tool having a cutting edge formed of a curved surface portion and an edge portion is vertically opposed to each other, and the substrate is cut at the edge portion while rotating the cutting tool.

Further, the slitter apparatus of the present invention is, for example, a blade having a curved edge portion and an edge portion, and a step having a curved edge portion at least at a tip, and a step between the apex of the edge portion and the apex of the curved edge portion. With the base material supporting plate blade configured to be the thickness of the material, the pair of cutting means are vertically opposed,
The substrate is cut at the edge while rotating the cutting means.

Further, the slitter apparatus of the present invention is, for example, a cutting tool having a cutting edge formed of a curved surface portion and an edge portion, at least a tip having a trapezoidal or sharp edge, and the edge portion and the apex of the trapezoidal or sharp edge. The step of the substrate supporting plate blade configured so as to have the thickness of the substrate, the pair of cutting means are vertically opposed to each other, and while rotating the cutting means, the edge portion of the base material It is characterized by cutting.

When the thickness of the blade is t, 1 ≦ t ≦ 50 mm
When the radius of curvature of the curved surface is R, 1 ≦ R ≦
0 ≦ when the range is 50 mm and the gap amount of the blade is d.
It is characterized in that d ≦ 0.1 mm.

In the above-described embodiment, the first blade and the second blade in the present invention are the curved blade 4.
In the cutting plane including the axis 2, the one side 4a forming the cutting edge angle of the curved blade 4 is a circular arc, and the other side 4b is a curved blade 4 that is a straight line. However, not limited to this,
In the first blade and the second blade in the present invention, for example, (a) as shown in FIG. 7A, both one side 4a 'and the other side 4b' are not arcs. It may be a curved line, or (b) as shown in FIG. 7 (b), both one side and the other side of one blade may be a straight line. And / or (2) at least one side of the cutting plane including the rotation axis of the first blade, which forms the included angle of the cutting edge of the first blade, and / or (2) the second plane of the cutting plane including the rotation axis of the second blade. It is sufficient that at least one of the sides forming the included angle of the blade is a curved line.

In the above-described embodiment, the first blade and the second blade in the present invention are: (1) the included angle of the first blade in the cutting plane including the rotation axis of the first blade; And / or (2) at least one side forming the included angle of the second blade in the cutting plane including the rotation axis of the second blade was a curve. However, the present invention is not limited to this. For example, as shown in FIG. 7C, the first blade and the second blade in the cutting plane including both rotating shafts are (1) Common perpendicular L1 of rotation axis and first blade 1
A first angle θ1, which is an angle between one side of the cutting edge angle of the first blade 104 and the other side of the first cutting edge 104, is a second angle θ1. The first angle θ1 ′, which is smaller than the angle θ2 and is an angle formed between the common perpendicular L1 ′ of these rotation axes and one side of the cutting edge of the second blade 104 ′, is equal to the common perpendicular L1. Is smaller than a second angle θ2 ′, which is an angle formed by the edge of the second blade 104 ′ and the other side of the edge of the second blade 104 ′, and (3) the first blade 104
The first corner and the first corner of the second blade 104 ′ are on substantially different sides with respect to the plane where the cutting of the substrate 1 is to be performed, and (4) θ1 is larger than θ2 ′. (5) θ
1 ′ may be smaller than θ2.

Of course, (1) one side forming the first corner of the first blade of the present invention and / or one side forming the first corner of the second blade of the present invention is a straight line. And
(2) The other side constituting the second corner of the first blade of the present invention and / or the other side constituting the second corner of the second blade of the present invention may be a curved line. . For example, FIG.
In the case of a blade as shown in (b), one side is a straight line, the first angle is 0 degree, the other side is an arc, and the second angle is an edge. Angle between the tangent at the portion and the common perpendicular of the present invention (here, coincides with one side)
Having.

The angles θ1, θ2, θ1 ′, θ2 ′
However, (1) the smaller the smaller, the better the cutability of the substrate,
(2) Needless to say, the longer the blade, the longer the life of the blade, and by setting the angle in consideration of these,
Needless to say, a more desirable effect can be obtained. Also, due to the above-mentioned angle relationship, the space on the space S1 side is larger than the space on the space S1 ′ side, and the space on the space S2 ′ side is larger than the space on the space S2 side. The portion of the base material 1 on the left side of the surface to be cut is cut off toward the space S1, and the portion of the base material 1 on the right side of the surface on which the cutting of the base material 1 is to be performed is cut out of the space S2 '. Is cut off.

Further, the slitter according to the present invention has a supporting portion for supporting the base material, and the second cutter is substantially provided with
(1) a first substrate supporting plate blade which is opposed to the substrate in a thickness direction of the substrate by a distance corresponding to the thickness of the substrate, and (2) is on the same side with respect to a cut surface where the substrate is to be cut A supporting portion for supporting the base material, and substantially facing (1) the first blade with a distance in the thickness direction of the base material, and (2) cutting the base material. It may or may not include the second substrate support plate blade on the same side as the predetermined cut surface.

Further, the slitter of the present invention has an edge portion for cutting the substrate, and is substantially separated from the second blade by (1) the thickness of the substrate in the thickness direction of the substrate. (2) a first cutting tool having first burr suppressing means on the same side with respect to a cut surface on which the base material is to be cut, and an edge portion for cutting the base material; And, in effect,
(1) facing each other at a distance only in the thickness direction of the base material,
(2) It may or may not include the second burr suppressing means on the same side with respect to the cut surface where the substrate is to be cut.

In the above-described embodiment, the first burr suppressing means and / or the second burr suppressing means of the present invention is a sharp edge blade 6 having a sharp edge portion. However, the present invention is not limited to this. For example, as shown in FIG. 7D, the shape of the edge portion may be a trapezoidal blade 6 ′ having a trapezoidal shape with a chamfered sharp edge. Note that the trapezoidal blade 6 ′ does not reach the sharp edge 6 whose sharp edge angle is sharp in its sharpness, but because the sharp edge angle is right, the contact surface between the trapezoidal blade 6 and the base material becomes larger. In addition, the substrate can be stably sandwiched together with the opposed blade. For this reason, the trapezoid blade 6 '
In addition, it is possible to suppress the occurrence of burrs while promoting accurate cutting of the base material.

As is clear from the above description, the present invention can improve the life of the blade itself, eliminate burrs at the edge of the base material after cutting, and improve short-circuit failure due to bipolar short-circuiting after assembly in the post-process. Therefore, it has a great effect on improving battery performance and product yield.

The present invention described above specifically includes a cutting device for cutting and manufacturing an electronic component and a secondary battery electrode plate (particularly, its positive electrode plate).

[0062]

As is apparent from the above description, the present invention has an advantage that a slitter device having an improved blade life and easy maintenance can be provided.

[Brief description of the drawings]

FIG. 1 is a front view (FIG. 1A) and a right side view (FIG. 1) of a slitter device according to a first embodiment of the present invention.
(B))

FIG. 2 is a front view (FIG. 2 (a)) and a right side view (FIG. 2) of a slitter device according to a second embodiment of the present invention.
(B))

FIG. 3 is a front view (FIG. 3A) and a right side view (FIG. 3) of a slitter device according to Embodiment 3 of the present invention.
(B))

FIG. 4 is a schematic diagram (FIG. 4 (a)) of the angle shape of the blade tip of the curved blade according to the first embodiment of the present invention in a case where the center of the curvature circle is on the right side of the paper with respect to the side of the blade cutting edge; Schematic diagram when the center of the curvature circle is on the left side of the paper with respect to the edge of the cutting edge (FIG. 4B)

FIG. 5 is an explanatory view of the overlap (FIG. 5 (a)) and an explanatory view of the offset (FIG. 5 (b)) between the cutting edges according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram for illustrating, as a first example, a radius of curvature and a center position of a curved circle of a curved surface portion of a curved surface blade and a substrate supporting plate blade according to the second embodiment of the present invention (FIG. 6 (a)); )),
Explanatory diagram for illustrating as a second example (FIG. 6B),
Explanatory diagram for illustrating as a third example (FIG. 6C)

FIG. 7 is an explanatory diagram for illustrating a first blade and a second blade in the present invention (FIG. 7A), an explanatory diagram for illustrating another example (FIG. 7B), and Explanatory diagram for exemplifying another example (FIG. 7C), and explanatory diagram of a burr suppressing unit in the present invention (FIG. 6D)

FIG. 8 is a front view of a conventional slitter device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 axis 3 Collar 4 Curved surface blade 5 Substrate support plate blade 6 Sharp edge blade

Claims (12)

[Claims] 1. A slitter apparatus for cutting a base material, wherein a first blade that is driven to rotate and a second blade that is driven to rotate are disposed so as to face each other with their rotation axes substantially parallel to each other. (1) at least one side of the cutting surface of the first blade, which includes the rotation axis of the first blade, that forms the included angle of the first blade, and / or (2) the second blade A slitter device, characterized in that at least one side of the cutting surface of the second blade, including the rotation axis of the second blade, which forms the included angle of the second blade is a curved line. 2. One side of the cutting surface of the first blade, which includes the rotation axis of the first blade, that forms the included angle of the cutting edge of the first blade is an arc, and the other side is a straight line. Including the rotation axis of the second blade, one side constituting the included angle of the second blade in the cutting surface of the second blade is a circular arc, the other side is a straight line The arc side of the first blade and the arc side of the second blade are on different sides with respect to a surface of the base material where the cutting is to be performed. The slitter according to claim 1. 3. A supporting portion for supporting the base material, and substantially (1) opposed to the second blade by a thickness of the base material in a thickness direction of the base material. , (2)
On the same side with respect to the cut surface where the cutting of the base material is to be performed, a first base material supporting means provided on a side surface of the first blade, and for supporting the base material And the first blade is substantially opposed to the first blade by the thickness in the thickness direction of the base material, and (2) the cutting of the base material is to be performed. The slitter device according to claim 1, further comprising a second base member supporting means provided on a side of the second blade, which is on the same side with respect to the cut surface. 4. An edge portion for suppressing burrs generated in a cut portion of the base material, wherein the edge portion substantially corresponds to the second blade.
(1) facing the substrate in the thickness direction of the substrate by a distance corresponding to the thickness of the substrate, and (2) on the same side with respect to a cut surface of the substrate to be cut, (1) a first burr suppressing means provided on a side surface of the blade, and an edge portion for suppressing a burr generated in a cut portion of the base material; (2) opposing each other at a distance of the thickness in the thickness direction of the base material;
A second burr suppressing unit provided on a side surface of the second blade on the same side with respect to a cut surface of the base material to be cut. Item 3. The slitter according to item 1 or 2. 5. The slitter device according to claim 4, wherein the edge of the first burr suppressing means and / or the second burr suppressing means has an acute or right angle of a cutting edge. 6. The slitter according to claim 1, wherein the thickness of the first blade and / or the thickness of the second blade is 1 mm or more and 50 mm or less. 7. A radius of an arc forming one side of the first blade and / or a radius of an arc forming one side of the second blade is 1 mm or more and 50 mm or less. The slitter according to any one of claims 1 to 5. 8. The method according to claim 1, wherein an overlap and / or an offset between the first blade and the second blade is 0 mm or more and 0.5 mm or less. Slitting equipment. 9. A slitter apparatus for cutting a base material by arranging a first blade that is driven to rotate and a second blade that is driven to rotate so that the rotation axes of the two blades are substantially parallel to each other. An angle between a common perpendicular line of the two rotating shafts passing through the cutting edge of the first blade and one side of the cutting edge of the first blade in a cutting plane including the both rotating shafts. A certain first angle is smaller than a second angle which is an angle between the common perpendicular and the other side of the cutting edge of the first blade, in a cutting plane including both of the rotation axes, A common angle of the two rotating shafts passing through the cutting edge of the second blade, and a first angle that is an angle formed by one side of the cutting edge of the second blade is a common perpendicular and the common angle. Smaller than a second angle, which is an angle formed by the other side of the cutting edge of the second blade, The first corner of the first blade and the first corner of the second blade are on substantially different sides with respect to a surface of the substrate on which the cutting is to be performed, and The first corner of the blade has a smaller angle than the second corner of the second blade, the first corner of the second blade is greater than the second corner of the first blade. A slitter device having a small angle. 10. A supporting portion for supporting the base material, and substantially facing (1) the second blade with a distance of the thickness of the base material in a thickness direction of the base material. , (2)
On the same side with respect to the cut surface where the cutting of the base material is to be performed, a first base material supporting means provided on a side surface of the first blade, and for supporting the base material And the first blade is substantially opposed to the first blade by the thickness in the thickness direction of the base material, and (2) the cutting of the base material is to be performed. The slitter device according to claim 9, further comprising a second base member supporting means provided on the same side with respect to the cut surface and provided on a side surface of the second blade. 11. A method according to claim 11, further comprising an edge portion for suppressing burrs generated in a cut portion of the base material, wherein the second blade is substantially (1) provided in the thickness direction of the base material. (2) first burr suppressing means provided on a side surface of the first blade on the same side with respect to a cut surface where the cutting of the base material is to be performed; And an edge portion for suppressing burrs generated in a cut portion of the base material, and substantially facing (1) the first blade with a distance of the thickness in the thickness direction of the base material. , (2)
A second burr suppressing unit provided on a side surface of the second blade on the same side with respect to a cut surface of the base material to be cut. Item 10. A slitter according to item 9. 12. One side forming a first corner of the first blade and / or one side forming a first corner of the second blade is a straight line, The other side constituting the second corner of the blade and / or
The slitter according to any one of claims 9 to 11, wherein the other side constituting the second corner of the second blade is a curved line.