JPH10297801A - Slitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an irregularity from occurring in a corner by arranging a joined part between a flange member to compose the guide groove part of each guide roller and a guide cylindrical member to abut a tape in an orthogonal state, in a control guide roller for regulating a plurality of tapes obtained by cutting a raw fabric in parallel to each other. SOLUTION: In a control guide roller to guide a plurality of tapes formed by cutting a raw fabric at a fixed position in a cross direction in a parallel state, a flange member 66 to compose the guide groove part 68 of each guide roller 63 of the guide roller 61 and a guide cylindrical member 67 where the tape abuts are severally formed, and the flange member 66 is assembled into a state orthogonal to the guide cylindrical member 57 to compose a structure where a roundish projection is prevented from occurring in a corner part of the guide grove part 68.

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 a tape of a tape into a product width and winding the tape to complete a plurality of hub-wound tapes. Regarding the structure.

[0002]

2. Description of the Related Art Generally, a tape such as a magnetic tape is manufactured in an intermediate manner as a large width corresponding to a plurality of final products (hereinafter, referred to as a raw material), and then cut into a predetermined width to obtain a final product. Manufactured. For this purpose, a so-called slitter (tape cutting device) for automatically cutting and winding the tape is installed in a magnetic tape manufacturing factory or the like.

[0003] The slitter includes a winding section for feeding the raw material of the tape, a knife section for continuously cutting the running raw material fed from the winding section and running at a predetermined position in the width direction, and a knife section. And a winding unit for winding a plurality of tapes obtained by cutting the raw material.

[0004] Between the knife section and the winding section, there are provided a plurality of guide rollers for guiding and regulating a plurality of cut tapes in parallel. The guide roller regulates the position so that it runs at a predetermined position until the cut magnetic tape is wound up. Without the regulation guide roller, the edges of adjacent magnetic tapes collide with each other. It cannot be removed because it causes damage.

[0005] As described above, the regulating guide rollers essential for the slitter include a combination of a single guide roller and a combination of a plurality of guide rollers. The combination of the single guide rollers is a plurality of guide rollers that regulate a plurality of tapes by arranging unit regulation guide rollers that regulate a single tape in parallel. The one in which a plurality of guide rollers are integrally formed is a so-called multiple regulation guide roller in which a predetermined number of guide rollers are integrally formed to regulate a plurality of tapes in parallel.

[0007] As shown in FIG. 7, the unit regulating guide roller 10 includes an arm portion 1 attached to a winding portion (not shown).
1 and a support shaft 12 mounted in a direction perpendicular to the free end side of the arm portion 11 and a guide roller 14 rotatably mounted on the support shaft 12 via a bearing 13. ing.

The guide roller 14 is formed in a cylindrical shape, and includes an inner cylindrical portion 15 on the inner periphery and an outer cylindrical portion 16 on the outer periphery with which the tape comes into contact. A bearing 13 is mounted on the inner cylindrical portion 15, and the guide roller 14 itself can rotate around the support shaft 12.

As shown in FIG. 8, a cylindrical guide cylindrical member 18 having a width of a tape 19 is provided on the outer cylindrical portion 16.
The guide cylindrical member 18 has a structure in which flange members 17 are integrally formed vertically on both side ends. A guide groove portion 20 in which the inner side sandwiched between the two flange members 17 on both side ends of the guide cylindrical member 18 contacts and guides the tape 19.
To form In addition, a corner 21 of the guide groove 20, that is, a joint between the flange members 17 and the guide cylindrical member 18 is provided with a relief 21 that is recessed from the surface of the guide cylindrical member 18. .

The reason for providing the relief 21 is as follows. That is, as shown in FIG. 9, when the flange member 17 and the guide cylindrical member 18 are integrally formed, the corner of the joint portion becomes a rounded shape 21 bulging from the surface of the guide cylindrical member 18. If the rounded shape 21 remains as it is, the end of the tape 19 that guides the running in the guide groove portion 20 rides on the rounded shape 21, and the running cannot be made uniform. 19
Edge damage such as seagulls occurs at both ends of the. In order to eliminate such adverse effects, the joining portion between the integrally formed flange member 17 and the guide cylindrical member 18 is made to have an accurate right-angled shape, or the end of the tape is removed by cutting out and removing the round shape. It is necessary to devise a way to avoid riding.

As one of the solutions, as shown in FIG. 8, a flange member 17 standing upright on a guide cylindrical member 18 is provided.
The structure is provided with a relief 21 which has been processed to depress the bonding position with the metal.

On the other hand, the plural regulating guide roller 22 shown in FIG. 10 has a structure in which a long supporting shaft 23 is provided with a rotatable guide roller 25 via a bearing 24.

The guide roller 25 comprises an inner cylindrical portion 26 on which the bearing 24 is mounted and an outer cylindrical portion 27 having a guide groove 30 for regulating and guiding a plurality of tapes in parallel.
The whole is formed in a long cylindrical shape.

A plurality of guide grooves 30 provided in the outer cylinder 27
Is for guiding a plurality of tapes by regulating them in parallel, and each of the guide grooves 30 is composed of a flange member 28 and a guide cylindrical member 29 for abutting the tape.

Flange member 2 constituting guide groove 30
As shown in FIG. 11, the guide member 8 and the guide cylindrical member 29 are provided in a direction in which the flange member 28 is vertically extended from both side ends of the guide cylindrical member 29. It has a structure in which the portion 31 is provided.

The guide cylindrical member 2 including the relief 31
Reference numeral 9 denotes a structure in which the tape 19 travels in contact with the tape 19.

[0016]

However, at the corners of the guide grooves formed by providing flange members on both sides of the tape width of the cylindrical guide cylindrical member, that is, at the joint between the flange member and the guide cylindrical member. When the relief portion is formed, there is a problem in that the end of the tape enters the relief portion during running while the tape is in contact with the tape portion, thereby promoting abrasion of the guide and causing edge damage to the tape.

Further, in the regulating guide roller, if the wrap angle of the tape is increased, the tape breaks at the guide groove. Therefore, the lap angle of the regulating guide roller must be 30 degrees or less. Therefore, the slip between the running tape and the regulating guide roller wound and driven by the tape is large, and the speed difference easily causes friction between both the tape and the guide roller.

Further, the tape edge damage caused by the tape entering the corner portion of the corner of the guide groove causes a wrinkle-like sag at the end of the tape, and when the tape is used as a magnetic tape, the contact with the hard side head is reduced. The result will be worse, and powder drops, dropouts, etc. will occur,
There are problems such as deterioration of the original electrical conversion characteristics.

Further, since the end of the tape is rubbed against the protrusion of the relief portion, the magnetic layer formed on the tape is dropped off, which causes dropout. For this reason, for example, every time processing is performed for about 60,000 m, the slitter guide roller needs to be cleaned, thereby lowering the operation rate.

Therefore, in the guide groove portion of the guide roller for guiding the running of the tape provided in the slitter,
There is a problem that needs to be solved to a structure that does not require a recessed portion such as a dent at a joint portion between a flange member and a guide cylindrical member that abuts on the tape.

[0021]

In order to solve the above-mentioned problems, a slitter according to the present invention comprises at least an unwinding section for unwinding a raw tape, and a long unwinding section for unwinding the unrolled tape. A knife section that continuously cuts the tape along the direction to generate a plurality of tapes, a regulating guide roller that guides the plurality of tapes generated by the cutting, and winding the tape guided by the regulating guide roller. The regulating guide roller, the guide cylindrical member and the flange member are separately formed, and the guide cylindrical member has at least the guide groove portion corresponding to the width of the tape. Are assembled in an orthogonal state.

With such a structure, the joining portion between the flange member forming the guide groove portion of the guide roller for abutting and guiding the tape and the guide cylindrical member for abutting the tape has a right-angled shape with no rounded shape. Therefore, it is not necessary to form a relief portion at a corner of the guide groove portion corresponding to the width of the tape.

[0023]

Next, an embodiment of a slitter according to the present invention will be described with reference to the drawings. The same components as those in the prior art will be described with the same reference numerals.

As shown in FIG. 1, the slitter 50 includes an unwinding portion 51 for unwinding a raw material 58 of a magnetic tape, and a magnetic tape unwound from the unwinding portion 51 and running. Knife part 52 that cuts continuously at a position
And a winding section 53 for winding the magnetic tape 19 unwound from the unwinding section 51 and cut by the knife section 52 around a hub.
A guide section 54 disposed between the knife section 52 and the winding section 53; a plurality of sensors 55 for detecting the slackness of the magnetic tape 19; The control unit 56 controls the operation of the taking unit 53.

The unwinding section 51 has an unwinding core 57 mounted thereon, and rotates the unwinding core 57 by driving a motor as needed, thereby unwinding a raw material 58 of the magnetic tape.

The knife section 52 is formed by cutting the magnetic tape 19 continuously by a knife roller into the width of the product along the length direction of the raw material 58 to form a plurality of magnetic tapes 19. A guide portion 54 provided with guide rollers at upper and lower positions for guiding a plurality of magnetic tapes 19 in parallel.
Is provided.

The guide section 54 is provided on the exit side of the knife section 52 and on the entry side of the winding section 53. Restriction guide rollers 60 for guiding a plurality of magnetic tapes 19 in parallel are arranged vertically. Structure.

The restriction guide roller 60 includes a single restriction guide roller 61 and a plural restriction guide roller 70, similarly to the two types of guide rollers described in the prior art, the single restriction guide roller 10 and the plural restriction guide rollers 22. There are types. Note that the present invention is not limited to these two types of regulating guide rollers.

As shown in FIGS. 2 and 3, the unit regulating guide roller 61 is perpendicular to the arm 11 attached to the knife 52 (see FIG. 1) and the free end side of the arm 11. It comprises a support shaft 62 mounted in the direction, and a guide roller 63 rotatably mounted on the support shaft 62 via the bearing 13.

The guide roller 63 comprises an inner cylindrical portion 64 on the inner circumference and an outer cylindrical portion 65 on the outer circumference, and is formed in a cylindrical shape as a whole. The bearing 13 is mounted on the inner cylinder portion 64, and the guide roller 63 itself is configured to be rotatable.

As shown in FIG. 3, the outer cylindrical portion 65 is a roller for abutting and guiding the tape, that is, the guide cylindrical member 6.
The guide groove portion 68 is provided by assembling the flange members 66 separately formed on both side ends of the guide member 7 in an orthogonal state. When assembled in this manner, the guide groove 6 leaving a space corresponding to at least the width of the magnetic tape.
8 are formed. The guide groove 68 allows the tape 19 to abut on the surface of the inner guide cylindrical member 67 sandwiched between the two flange members 66 and regulates the tape 19 to travel.

The guide groove 68 having such a structure is
As shown in FIG. 4, the corner of the joint between the flange member 66 and the surface of the guide cylindrical member 67 is formed at a right angle without roundness or the like. In other words, the contact portion between the end of the tape 19 and the corner of the guide groove 68 has no irregularities and fits almost perfectly, so that there is no need to provide a so-called relief portion.

Although the conventional material uses aluminum to reduce the weight, the flange member 66 is used as described above.
Is separated, the material of the flange member 66 can be changed. For example, a wear-resistant material such as stainless steel, iron, ceramics, or the like can be used instead of the material of the flange member 66 that is easily worn.

FIG. 5 shows a plurality of regulation guide rollers 70. The plurality of regulation guide rollers 70 have a structure in which a long support shaft 71 and a rotatable guide roller 73 are provided via a bearing 72. I have.

The guide roller 73 comprises an inner cylindrical portion 74 on which the bearing 72 is mounted, and a plurality of integrated guide rollers for regulating and guiding a plurality of tapes in parallel, that is, an outer cylindrical portion 75. It is formed in a cylindrical shape.

The outer cylindrical portion 75 regulates and guides a plurality of tapes in parallel by a plurality of integrated guide grooves 78, and each of the guide grooves 78 is formed by a flange member 7.
6 and a guide cylindrical member 77 that abuts the tape, and each groove has a width corresponding to the width of the tape.

Flange member 7 constituting guide groove 78
As shown in FIG. 6, the guide member 6 and the guide cylindrical member 77 are formed separately and then assembled.
The flange member 76 is assembled by extending in a direction orthogonal to at least both ends of the guide cylindrical member 77 having the width of the tape. Also, the guide cylindrical member 77 has
The structure is such that a guide member 79 is provided on the surface thereof for contacting the tape. The guide member 79 and the flange member 7
The corner 80, which is a joint portion with No. 6, has a right-angled shape without roundness or the like.

The inner side surfaces of the two flange members 76 are formed such that the opening portions of the free ends are tapered so that the frontage is widened.
The regulation width is reduced as approaching the surface of the guide member 79. The surface of the guide member 79 has a side wall surface longer than the thickness of the tape 19, and this side wall surface is perpendicular to the guide member 79.

By adopting such a structure, when guiding the tape, the tape 19 is guided between the two flange members 76 to guide the tape 19 to an appropriate position, and the tape 19 contacts the surface of the guide member 79 of the guide cylindrical member 77. In addition to being able to contact and regulate, the corner 80 of the guide groove 78 has no roundness or the like, so that the end portion of the running tape 19 has no unevenness and can run uniformly.

Next, the operation of the slitter 50 having the above configuration will be described. First, in FIG. 11, when the web 58 of the magnetic tape 19 is set in the unwinding section 51 and the operation is started, the web 58 is continuously unwound from the unwinding section 51, and is fed by the knife section 52. 58 is continuously cut to the width of the product,
3 sequentially winds around the hub. As long as no trouble such as cutting of the magnetic tape 19 occurs, a magnetic tape having a predetermined length wound around the hub is completed.

In the thus obtained tape after cutting, a single regulation guide roller 61 (see FIG. 3) or a plurality of regulation guide rollers 70 (see FIG. 3) having a structure in which the regulation width is narrowed particularly toward the surface of the guide cylindrical member 67. Using FIG. 5), the data as shown in Table 1 below can be obtained as the measurement results of the cut-out digital powder, the dropout, and the edge damage of the cut digital tape.

The dropout is measured by a dropout measuring instrument, the powder drop is measured by visual inspection of the stain on the magnetic tape surface-treated paper, and the edge damage is measured by visual inspection of the magnetic tape edge with an optical microscope. It was done.

[0043]

[Table 1] ○: Almost missing △: A little

The meaning of the above Table 1 is that, in the magnetic tape obtained by cutting the same amount from the raw material, the dropout can be reduced to one-fifth, and the powder drop and the edge damage are almost eliminated. Can give good results. As a result, the yield is improved by about 30%, and replacement due to abrasion of the regulating guide roller can be doubled as compared with the related art. In addition, the cleaning performed every about 60,000 m, which has been performed for powder dropping, can be reduced to about 200,000 m. As a result, the operation rate can be improved.

Further, the flange members 66 and 76 of the regulating guide roller 60 are easily worn, and in the past, the entire regulating guide roller had to be replaced. , Only the flange members 66 and 76 need to be replaced, which makes it easy to change the material of the flange members 66 and 76, and the wear-resistant materials listed above can be used.
The replacement work time can be greatly reduced.

[0046]

As described above, in the slitter according to the present invention, the flange member forming the guide groove of the guide roller and the guide cylindrical member for guiding the tape by contacting the tape are separately formed and assembled. It can be in a right angle state where roundness etc. does not occur at the joint part of both,
There is an effect that the unevenness is eliminated at the corners at both ends of the guide groove, and the tape can be run in a uniform state to prevent the occurrence of distortion and the like.

In addition, since the flange member is formed separately, it is possible to replace only the flange member and use a wear-resistant material, thereby simplifying the replacement work and extending the replacement interval. Thus, there is an effect that the operation rate of the slitter can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a slitter according to the present invention.

FIG. 2 is a schematic perspective view showing a part of the parallel guide rollers.

FIG. 3 is a schematic sectional view of the single unit regulating guide roller.

FIG. 4 is an explanatory view showing, in an enlarged manner, a joint portion between a flange member and a guide cylindrical member which constitute a guide groove of the single unit regulating guide roller.

FIG. 5 is a schematic sectional view of the multiple regulating guide roller.

FIG. 6 is an explanatory diagram showing, in an enlarged manner, a portion of a flange member and a guide cylindrical member that constitute a guide groove of the plural regulating guide rollers.

FIG. 7 is a schematic cross-sectional view of a single regulation guide roller in the prior art.

FIG. 8 is an explanatory view showing a structure in which a flange portion and a guide cylindrical member constituting a guide groove portion of a single regulating guide roller according to the related art are integrally provided with a relief portion at a joint portion.

FIG. 9 is an explanatory view showing a state in which a flange portion and a guide cylindrical member constituting a guide groove portion of a guide roller in the related art are not integrally provided with a relief portion at a joint portion.

FIG. 10 is a schematic cross-sectional view of a multiple regulating guide roller according to the related art.

FIG. 11 is an explanatory view showing a structure in which a flange portion and a guide cylindrical member constituting a guide groove portion of a plurality of regulating guide rollers according to a conventional technique are integrally provided with a relief portion at a joint portion.

[Explanation of symbols]

10; single body regulating guide roller, 11; arm, 12; support shaft, 13; bearing, 14; guide roller, 15; inner cylinder, 16; outer cylinder, 17; flange member, 18; Tape (magnetic tape), 20; guide groove portion, 21; relief portion, 22;
3; support shaft, 24; bearing, 25; guide roller, 2
6; inner cylinder, 27; outer cylinder, 28; flange member, 2
9; guide cylindrical member, 30; guide groove portion, 31; relief portion, 50; slitter, 51; unwinding portion, 52; knife portion, 53; winding portion, 54; guide portion, 55;
56; control unit, 57; unwinding core, 58; web, 60;
Regulation guide roller, 61; single regulation guide roller, 6
2; support shaft, 63; guide roller, 64; inner cylinder, 65;
Outer cylinder part, 66; flange member, 67; guide cylindrical member,
68; guide groove portion, 70; plural regulating guide rollers, 7
DESCRIPTION OF SYMBOLS 1; Support shaft 72; Bearing 73; Guide roller 7
4; inner cylinder part, 75; outer cylinder part, 76; flange member, 7
7; guide cylindrical member, 78; guide groove portion, 79; guide member, 80; corner portion

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[Procedure amendment]

[Submission date] May 7, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction contents]

The meaning of the above Table 1 is that, in the magnetic tape obtained by cutting the same amount from the raw material, the dropout can be reduced to one-fifth, and the powder drop and the edge damage are almost eliminated. Can give good results.

Claims (4)

[Claims] 1. An unwinding unit that unwinds at least a raw material of a tape, and a knife unit that generates a plurality of tapes by continuously cutting the raw material unwound from the unwinding portion along a length direction. And, a regulating guide roller for guiding each of the plurality of tapes generated by cutting, and a winding unit for winding the tape guided by the regulating guide roller, the regulating guide roller includes a guide cylindrical member and A slitter, wherein a flange member and a flange member are separately formed, and the flange member is assembled in an orthogonal state while leaving at least a guide groove portion corresponding to the width of the tape in the guide cylindrical member. 2. The slitter according to claim 1, wherein the regulating guide roller is formed by arranging a plurality of single guide rollers. 3. The slitter according to claim 1, wherein said regulating guide roller comprises a plurality of integrated guide rollers. 4. The slitter according to claim 1, wherein the guide groove narrows a regulation width as the tape approaches a surface of the guide cylindrical member.