JP2000210811A - Plate pressing structure of metal strip slitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate pressing structure of a metal strip slitter that can feed a metallic belt plate into the slit part of a slitter continuously with a flat posture over whole width. SOLUTION: Multiple disc cutters 10, 10 are fixed to correspond to parallel revolving shafts 1, 1 and a wide metallic belt plate 3 is fed into corresponding cutters 10, 10 continuously. A first plate pressing guide 4 positioned between cutters 10, 10 in a slit part 20 to slit the metallic belt plate 3 on a narrow multiple metal strip 30 is installed. The first plate pressing guide 4 slides to or approaches to the sides of cutters 10 on both sides and the surface of the travelling metallic belt plate 3. Also, a second plate pressing guide 5 positioned on the upper stream side of feeding direction of each cutter 10 is installed. The tip part of the second plate pressing guide 5 approaches to and covers the upper stream side of feeding direction of outer circumference of cutters 10, 10 and slides to or approaches to the surface of the travelling metallic belt plate 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal strip slitter holding structure for slitting a large number of narrow metal strips while feeding a wide metal strip. More particularly, the present invention relates to a thin metal strip slit. The present invention relates to a plate holding structure for preventing a metal strip from being broken or an abnormal cut edge (jaggedness) from occurring.

[0002]

2. Description of the Related Art Referring to FIGS. 5 and 6, a description will be given of a conventional metal strip slitter plate holding structure of this kind. 10
A wide metal strip 3, which is a rolled material of an aluminum alloy and has a thickness of 0 μm or less, is wound in a coil shape, is continuously unwound from an uncoiler (not shown), is passed through several pinch rollers, and is turned by a direction changing pinch roller 6. The direction of the cutter stand 2 is changed to the downward direction, and it is moved into the slit portion 20 of the cutter stand 2.

[0003] On the frames 21 on both sides of the cutter stand 2, rotatable shafts 1, 1 driven by a motor (not shown) are rotatably mounted so as to be parallel to the horizontal direction. A large number of disc-shaped cutters 10, 10 are fixed to the two rotating shafts 1, 1 at predetermined intervals via spacers 11, respectively. Each cutter 10 of one rotating shaft 1 and each cutter 10 of the other rotating shaft 1 are installed so as to correspond to each other, and the corresponding outer edges of the two cutters 10, 10 are slightly slightly left and right in FIG. (About several tens of μm). The cutters 10 of each rotary shaft 1 are arranged such that portions having a large interval between them and portions having a small interval therebetween are alternately arranged, and the wide metal strip 3 is formed into a large number of metal strips 30 with a uniform width. It is arranged so that it can be slit.

In the slit portion 20 of the cutter stand 2, between the adjacent cutters 10 of the respective rotating shafts 1, the side surfaces of the cutters 10 on both sides and the surface of the running metal strip 3 are slidably contacted. An adjacent plate holding guide 4a is interposed. Outside the cutters 10 on both sides of each of the rotating shafts 1, 1, an ear plate pressing guide 4b is installed similarly to the plate pressing guide 4a. Each plate holding guide 4a and each ear plate holding guide 4b on each of the cutters 10 and 10 are
The upper and lower ends thereof are attached to corresponding upper and lower support members 24 and 25 which are horizontally fixed to the upper and lower frames 22 and 23 of the cutter stand 2 respectively.

[0005] The metal strip 3 continuously running in the downward direction by the direction changing pinch roller 6 is guided while being sandwiched by the plate pressing guides 4a, 4a on both sides thereof, while being slit. (A slit portion formed by the cutters 10 and 10). The metal strip 3 to be rolled is bitten between the edges of the corresponding cutters 10, 10 (the left cutter 10 is clockwise and the right cutter 10 is counterclockwise) rotating in the direction of the arrow in FIG. Thereby, slits are sequentially formed in a large number of narrow metal strips 30. Each of the slit metal strips 30 runs from the lower portion of the distribution pinch roll 7, and the odd-numbered metal strips 30 from the top in FIG. 6 run leftward in FIG. 5 and the even-numbered metal strips 30 run rightward. And wound on spools fixed to winding shafts (not shown). For example, in the case of the above-mentioned metal strip slitter, when the thickness of each cutter is 6 mm, the interval between opposed plate pressing guides is about 200 μm, and a 70 μm thick metal strip is slit into 30 metal strips with a strip width of 16 mm. The line speed is around 400 m / min.

[0006]

When the metal strip slitter is operated as described above, when the metal strip 3 is continuously bitten between the edges of the corresponding cutters 10 and 10, the metal strip 3 is moved. The portion in the retraction direction upstream of the bited portion is liable to cause a posture deformation such as bending in a plan view,
If the posture of the slit portion 20 is deformed on the upstream side in the retraction direction, the slit is not smoothly formed. For this reason, in the slit portion 20, the respective plate pressing guides 4a are interposed between the respective cutters 10 on the coaxial side so as to slidably contact or approach the surface of the metal strip 3 on the upstream side in the retraction direction. At 4a, the metal band plate 3 is continuously pressed into the slit portion 20 in a correct flat posture by guiding the metal band plate 3 while pressing the metal band plate 3 slightly from both sides thereof in the retraction direction upstream of the slit portion 20. Like that. However, in the conventional plate holding structure,
Since the plate holding guide 4a is provided only between the disk-shaped cutters 10 of the rotary shafts 1 and 1, a slit is provided on the upper side of the cutter 10 having a thickness of 6 mm (on the upstream side in the rewinding direction of the strip 3). When the metal band plate 3 is continuously fed into the portion 20, the portion not sandwiched by the plate holding guides 4a is likely to be deformed in posture such as bending (vertical wrinkling) in a plan view. Cut edges (jagged edges) and the like may occur. This break or cut is abnormal because the metal strip 3
Is particularly thin in cases where the flatness control during rolling is not sufficient or when the thickness ratio of the cutter 10 is large (the ratio of the thickness of the cutter to the slit increases as the width of the slit metal strip decreases). It is.

An object of the present invention is to continuously place the metal strip 3 on the slit portion 20 in a correct flat posture even when the flatness of the metal strip is not good or when the thickness of the disk-shaped cutter is large. An object of the present invention is to provide a metal strip slitter plate holding structure that can be rolled into a metal strip slitter.

[0008]

A plate holding structure for a metal strip slitter according to the present invention is configured as follows to solve the above-mentioned problems. That is, in the plate holding structure of the metal strip slitter according to claim 1, a large number of disk-shaped cutters 10, 10 are fixed at predetermined intervals to the rotating shafts 1, 1 installed in parallel with each other. By rotating the wide metal strip 3 continuously between the edge of the cutter 10 of one rotating shaft 1 and the edge of the cutter 10 of the other rotating shaft 1 while rotating the 1, 1 in the opposite direction. In the slit portion 20 of the cutter stand 2 for slitting the metal strip 3 into a large number of narrow metal strips 30, the cutter stand 2 is provided between the adjacent cutters 10 of the rotary shafts 1 and 1 respectively. A first plate holding guide 4 that is positioned and slidably contacts or comes close to the side surfaces of the cutters 10 on both sides and the surface of the running metal strip 3 is installed. Each cutter in 1,1 Located in the retracting direction upstream of 0, tip the cutter 10, 10
A second plate holding guide 5 is provided so as to cover the outer peripheral portion of the metal strip 3 close to the upstream side in the retraction direction and to be in sliding contact with or close to the surface of the running metal strip 3.

According to a second aspect of the present invention, there is provided a plate holding structure for a metal strip slitter, wherein each of the first plate holding guides and the second plate holding guide adjacent to the first plate holding guide are provided. The plate holding guide 5 is a separate plate-shaped material.

According to a third aspect of the present invention, in the plate holding structure of the second aspect, the cutter stand 2 forms the metal strip 3 with a plurality of metal strips 3 having a constant width.
The cutter 10 of each of the rotating shafts 1 and 1 is arranged in such a manner that wide-spaced portions and narrow-spaced portions corresponding to the width of the metal strip 30 are alternately positioned.
Among the first plate holding guides 4 located between the cutters 10 of the respective rotating shafts 1, on both side surfaces of the first plate holding guide 40 located at a portion where the interval between the cutters 10 is small, The second plate holding guides 5 and 5 adjacent to both sides of the first plate holding guide 40 are fixed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
A preferred embodiment of the metal strip slitter plate holding structure according to the present invention will be described. FIG. 1 is a partial sectional view showing one embodiment of a metal strip slitter plate holding structure according to the present invention,
2 is a partially enlarged plan sectional view of the plate holding structure of FIG. 1, FIG. 3 is a partial sectional view along the arrow AA of FIG. 2, and FIG. 4A is a partial first plate holding guide and its part. A side view showing a combined state with the second plate holding guides on both sides, and FIG. 2B is a partially cutaway rear view of the plate holding guide of FIG. In the following description, the same components as those of the conventional metal strip slitter shown in FIGS. 5 and 6 are denoted by the same reference numerals, and description thereof will be omitted.

The structure of the portion other than the plate holding structure of the metal strip slitter of FIG. 1 is the same as that of the metal strip slitter of FIG.
At the upper and lower frames 22, 23 on both sides of the cutter stand 2, parallel horizontal support members 24, 24 are attached so as to be located above the position sandwiching the slit 20, and downwardly below the position sandwiching the slit 20. The parallel horizontal support members 25 are mounted so as to be positioned.
The upper support members 24 support the upper portions of a large number of the first plate pressing guides 4 and the second plate pressing guides 5, and the lower support members 25 support the first support members 25. The lower end of the plate holding guide 4 is supported.

The first plate holding guide 4 has a plurality of rotating shafts 1 and
1 are located between the cutters 10 adjacent to each other, and are slidably in contact with or close to the side surfaces of the cutters 10 on both sides and the surface of the running metal strip 3. The second plate holding guide 5 is provided with each cutter 10 on each of the rotating shafts 1 and 1.
The tip (the end along the running direction of the metal strip 3, that is, the lower end in FIG. 1) is close to the upstream of the outer periphery of each of the cutters 10 in the retraction direction. The metal strip 3 is disposed so as to be in contact with or close to the surface of the running metal strip 3. In this embodiment, the metal strip 3 has a thickness of 70 μm, while the distance between the plate pressing guides 4 and 5 facing each other via the traveling metal strip 3 is about 200 μm.

Each of the first plate holding guides 4 and the second plate holding guide 5 adjacent to the first plate holding guide 4 are made of a separate plate-like material (for example, bakelite containing cloth). In addition, the second plate holding guide 5 is installed such that both side surfaces thereof are in contact with or close to the side surfaces of the adjacent first plate holding guide 4. In this embodiment,
The cutter stand 2 is configured to slit the metal strip 3 into a large number of metal strips 30 having a constant width. The cutter 10 having a thickness of 6 mm on each of the rotating shafts 1 and 1 has a width (16 mm) of the metal strip 30. Are arranged in such a manner that the portions having a wide interval and the portions having a small interval (interval of 4 mm) are alternately located. Then, among the first plate holding guides 4 located between the cutters 10 of the respective rotating shafts 1, the first plate holding guides 4 located at a portion where the interval between the cutters 10 is small.
As shown in detail in FIG. 4, a plurality of sets of bolt nuts 5 adjacent to both sides of the first plate holding guide 40 are provided on both side surfaces of the bolt nut 5.
It is fixed by 0. These bolts and nuts 50
Are not projected from the surface of the second plate holding guide 5.

The front end (lower end in the figure) of each of the second plate holding guides 5, 5 is connected to the cutter 10 in the slit 20.
Is formed on an inclined surface 51 which is inclined upward from the front side facing the traveling metal strip 3 to the rear side in order to cover the outer periphery of the metal strip close to the rewinding direction upstream side. The upper end of each of the first plate holding guide 4 and the second plate holding guide 5 is formed as an inclined surface which is tapered toward the traveling metal strip 3. In the first plate holding guide 4, the first plate holding guide 40 having a small thickness, and the second plate holding guide 5 fixed to both upper side surfaces thereof, the front side facing the metal strip 3 is placed on the front side. In order to reduce the shock at the time of contact with the metal strip 3 running at high speed, as shown in FIG.
It is covered with a nonwoven fabric, knitted fabric, felt or other fiber sheet 41.

The clearance between the first plate holding guide 40 having a small thickness and the side surfaces of the cutters 10 on both sides thereof, the first plate holding guide 4 having a large thickness and the cutters 10 on both sides thereof.
And the clearance between the first plate holding guide 4 having a large thickness and the second plate holding guides on both sides thereof are set to about 200 to 500 μm, respectively.

According to the plate holding structure of this embodiment, the slits 20 of the cutter stand 2 are located between the respective cutters 10 adjacent to the respective rotary shafts 1 and 1 and are in contact with the side surfaces of the cutters 10 on both sides. Running metal strip 3
In addition to installing the first plate holding guide 4 which is in sliding contact with or close to the surface of the
0 is located on the upstream side in the retraction direction,
Since the second plate holding guide 5 is provided so as to cover the outer peripheral portions of 0 and 10 in the vicinity of the upstream side in the retraction direction and slide or come close to the surface of the running metal strip 3. ,
On the upstream side in the retraction direction of the slit portion 20 of the cutter stand 2, the metal strip 3 is attached to the corresponding cutter 10, 10.
Until immediately before being caught in the middle, the plate is guided in a flat state by being sandwiched by the plate holding guides over substantially the entire width thereof, so that posture deformation such as vertical wrinkles does not occur. Therefore, it is possible to prevent the metal strip 30 from being broken at the time of slitting and the occurrence of an abnormal (jagged) cut edge. Second, the first plate holding guide 40 having a smaller thickness and the second plate holding guide 5 adjacent thereto are formed of different plate-like materials, and the first plate holding guide 40 is provided on both surfaces of the first plate holding guide 40. Since the second plate holding guide 5 is fixed, the first plate holding guide 40 and the second plate holding guides 5 and 5 on both sides thereof can be integrally handled, which is convenient. It can be configured with high accuracy. Third, since the fiber sheet 41 is coated on the front side of the sheet pressing guide facing the metal strip 3, the shock at the time of contact with the metal strip 3 running at high speed is applied to the fiber sheet. At 41 it can be absorbed.

Other Embodiments In the above embodiment, the metal strip 3 is made to run downward, and slits are made when the metal strip 3 travels downward. It can be configured to slit while running in the direction. In addition, metal strip 3
Can be implemented not by a structure in which slits are formed in metal strips 30 of the same width but by slits in metal strips 30 of several different widths.

[0019]

According to the plate holding structure of the metal strip slitter according to the first aspect of the present invention, in the slit portion 20 of the cutter stand 2, between the respective cutters 10 adjacent to the respective rotary shafts 1 and 1. Cutters 10 located on both sides
In addition to installing the first plate holding guide 4 in a state of slidingly contacting or approaching the side surface of the metal strip 3 and the surface of the running metal strip 3, the first plate holding guide 4 is located on the rotating shafts 1, 1 at the upstream side in the retraction direction of each cutter 10. A second plate holding guide 5 is provided in which the tip portion is placed close to the outer peripheral portion of each of the cutters 10 and 10 in the rewinding direction and is in sliding contact with or close to the surface of the running metal strip 3. The slit 20 of the cutter stand 2
On the upstream side in the retraction direction, the metal strip 3 is sandwiched between the respective sheet pressing guides and is guided in a flat state over almost the entire width until immediately before being bitten between the corresponding cutters 10, 10, and has vertical wrinkles. Does not deform. Therefore, it is possible to prevent the metal strip 30 from being broken at the time of slitting and the occurrence of an abnormal (jagged) cut edge.

According to the plate holding structure of the metal strip slitter according to the second aspect of the present invention, the first plate holding guide 4 and the second plate holding guide are formed of different plate members. Therefore, it is easy to replace the most broken part of the guide.

According to the plate holding structure of the metal strip slitter according to the third aspect of the present invention, the first plate holding guide 40 having a smaller thickness and the second plate holding guide 5 adjacent thereto are separated. Of the first plate holding guide 4
Since the second plate holding guides 5 are fixed to both sides of the first plate holding member 0, the first plate holding guide 40 and the second plate holding guides 5, 5 on both sides thereof can be integrally handled, which is convenient. The plate holding guide can be configured with high accuracy.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing one embodiment of a metal strip slitter plate holding structure according to the present invention.

FIG. 2 is a partially enlarged plan sectional view of the plate holding structure of FIG. 1;

FIG. 3 is a partial sectional view taken along an arrow AA in FIG. 2;

FIG. 4 shows a combined state of a thin first plate holding guide and second holding guides on both sides thereof.
(A) is a side view of the combined state, and (b) is a partially cutaway rear view of the combined state.

FIG. 5 is a partial cross-sectional view showing a conventional metal strip slitter plate holding structure.

FIG. 6 is a partially enlarged plan sectional view of the plate holding structure of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotation axis 10 Disc-shaped cutter 11 Spacer 2 Cutter stand 20 Slit part 21,22,23 Frame 24,25 Support member 3 Metal strip 30 Metal strip 4,40 First plate holding guide 4a Plate holding guide 4b Scrap Plate holding guide 41 Fiber sheet 5 Second plate holding guide 50 Bolt / nut 51 Inclined surface 6 Direction conversion pinch roller 7 Sorting pinch roller

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yataka 2-6-1, Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Electric Co., Ltd. (72) Ryoichi Kobayashi 2-6-1, Marunouchi, Chiyoda-ku, Tokyo No. F-term in Furukawa Electric Co., Ltd. (reference) 3C039 CA08 CA13 CB12 CB33 3C051 BB01 BB06 CC12 CC22

Claims (3)

[Claims] 1. A large number of disc-shaped cutters 10, 10 are fixed at predetermined intervals to rotating shafts 1, 1 installed in parallel, respectively, while rotating both rotating shafts 1, 1 in opposite directions. By continuously rolling in the wide metal strip 3 between the edge of the cutter 10 of the rotary shaft 1 and the edge of the cutter 10 of the other rotary shaft 1, In the slit portion 20 of the cutter stand 2 that slits the metal strip 30, the cutter stand 2 is located between the respective cutters 10 adjacent to each of the rotating shafts 1 and 1 and runs with the side surfaces of the cutters 10 on both sides. A first plate holding guide 4 is provided which is in sliding contact with or close to the surface of the metal strip 3 inside. Further, the cutter stand 2 is provided on the rotary shafts 1 and 1 at the upstream side in the retraction direction of the cutters 10. And the tip is The second plate holding guide 5 is provided so as to cover the outer peripheral portions of the cutters 10 and 10 in the vicinity of the upstream side in the retraction direction and to slide on or approach the surface of the running metal strip 3. The metal strip slitter plate holding structure. 2. A first plate holding guide 4 and a second plate holding guide 5 adjacent to the first plate holding guide 4.
2. The plate holding structure for a metal strip slitter according to claim 1, wherein each of the plate members is a separate plate member. 3. The cutter stand 2 is configured to slit the metal strip 3 into a plurality of metal strips 30 having a constant width. The cutter 10 of each of the rotating shafts 1 and 1 corresponds to the width of the metal strip 30. The space between the cutters 10 in the first plate holding guide 4 located between the cutters 10 of the rotary shafts 1 is arranged such that the wide space portions and the narrow space portions are alternately located. Second plate holding guides 5, 5 adjacent to both sides of the first plate holding guide 40 are fixed to both side surfaces of the first plate holding guide 40 located in the narrow portion. The plate holding structure for a metal strip slitter according to claim 2.