JP4158870B2 - Plate holding structure of metal strip slitter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plate holding structure of a metal strip slitter that slits a plurality of narrow metal strips while feeding out a wide metal strip, and more particularly, when slitting a thin metal strip, The present invention relates to a plate pressing structure for preventing the occurrence of folds, cut edge abnormalities, and the like.
[0002]
[Prior art]
With reference to FIGS. 5 and 6, a conventional metal sheet slitter plate holding structure of this type will be described.
A wide metal strip 3, which is a rolled material of aluminum alloy with a thickness of 100 μm or less, is wound in a coil shape, continuously fed out from an uncoiler (not shown), passed through several pinch rollers, and by a direction changing pinch roller 6. The direction is changed downward and it is fed into the slit portion 20 of the cutter stand 2.
[0003]
On the frames 21 on both sides of the cutter stand 2, rotary shafts 1 and 1 driven by a motor (not shown) are rotatably installed so as to be parallel to the horizontal direction. A large number of disc-shaped cutters 10 and 10 are fixed to the rotary shafts 1 and 1 through spacers 11 at predetermined intervals, respectively.
Each cutter 10 of one rotary shaft 1 and each cutter 10 of the other rotary shaft 1 are installed so as to correspond to each other, and the corresponding cutters 10 and 10 have slightly peripheral edges slightly in the left-right direction in FIG. Overlap (about several tens of μm).
The cutters 10 and 10 of each rotary shaft 1 have portions where the mutual intervals are wide and portions where the mutual intervals are narrow alternately, 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.
[0004]
In the slit portion 20 of the cutter stand 2, between the adjacent cutters 10 of the rotary shafts 1 and 1, the plates that are in sliding contact with or close to the side surfaces of the cutters 10 on both sides and the surface of the metal strip 3 that is running. A holding guide 4a is interposed. Ear plate pressing guides 4b are installed outside the cutters 10 on both sides of the rotary shafts 1 and 1 in the same manner as the plate pressing guides 4a.
Each of the plate pressing guides 4 a and the ear plate pressing guides 4 b on the respective cutters 10, 10 side has upper and lower ends that are respectively fixed to the upper and lower frames 22, 23 of the cutter stand 2, respectively. It is attached to the support members 24 and 25.
[0005]
The metal strip 3 that continuously runs in a downward state by the direction changing pinch roller 6 is guided while being sandwiched between the plate pressing guides 4a and 4a on both sides thereof, and the slit portion 20 (corresponding cutter 10) of the cutter stand 2 is guided. , 10 to the slit portion).
The metal strip 3 to be fed is caught between the edges of the corresponding cutters 10 and 10 rotating in the direction of the arrow in FIG. 5 (the left cutter 10 is clockwise and the right cutter 10 is counterclockwise). As a result, the slits are sequentially slit into a large number of narrow metal strips 30.
Each of the slit metal strips 30 runs from the lower part of the distribution pinch roll 7, the odd-numbered metal strips 30 from the top of FIG. 6 to the left in FIG. 5, and the even-numbered metal strips 30 to the right. And are wound up on a spool fixed to a winding shaft (not shown).
For example, in the case of the above-mentioned metal strip slitter, the thickness of each cutter is 6 mm, the opposing spacing of the opposing plate pressing guides is around 200 μm, and a metal strip having a thickness of 70 μm is slit into 30 strips with a strip width of 16 mm. The line speed is around 400 m / min.
[0006]
[Problems to be solved by the invention]
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 retraction direction of the bitten portion of the metal strip 3 is engaged. When the upstream portion is easily deformed in posture such as bending in a plan view, and the posture is deformed in the upstream portion of the slit portion 20 in the retracting direction, the slit is not smoothly performed.
Therefore, in the slit portion 20, the plate pressing guides 4 a are interposed between the coaxial-side cutters 10 so as to be in sliding contact with or close to the surface of the metal strip 3 on the upstream side in the retracting direction. The metal strip 3 is continuously fed into the slit portion 20 in a correct flat posture by guiding the metal strip 3 from both sides of the metal strip 3 on the upstream side of the slit portion 20 in 4a. I am doing so.
However, in the conventional plate pressing structure, the plate pressing guide 4a is installed only between the disk-shaped cutters 10 of the rotary shafts 1 and 1, so that the upper side (the strip plate 3) of the cutter 10 having a thickness of 6 mm. (Upstream in the retraction direction), when the metal strip 3 is continuously retracted into the slit portion 20, the posture deformation such as bending (vertical wrinkles) in a plan view at a portion not sandwiched between the plate pressing guides 4a. In some cases, the metal strip may be bent or cut abnormally (notched).
This fold or cut edge abnormality is caused when the metal strip 3 is thin and the flatness control during rolling is not sufficient, or when the thickness ratio of the cutter 10 is large (the narrower the metal strip to be slit, the more This is particularly remarkable when the ratio of the thickness is increased).
[0007]
The object of the present invention is to continuously feed the metal strip 3 into the slit portion 20 in a correct flat posture even when the flatness of the metal strip is not good or the thickness of the disc-shaped cutter is large. An object of the present invention is to provide a plate holding structure for a metal slit slitter.
[0008]
[Means for Solving the Problems]
The metal sheet slitter plate pressing structure according to the present invention is configured as follows in order to solve the above-described problems.
That is, the plate holding structure of the metal strip slitter according to claim 1,
A large number of disc-shaped cutters 10 and 10 are fixed to the rotary shafts 1 and 1 installed in parallel at predetermined intervals, respectively. By continuously feeding the wide metal strip 3 between the edge of the cutter 10 and the edge of the cutter 10 of the other rotating shaft 1, the metal strip 3 is slit into a large number of narrow metal strips 30. In the slit portion 20 of the cutter stand 2 that
The cutter stand 2 is located between the adjacent cutters 10 of the rotary shafts 1 and 1 and is in sliding contact with or close to the side surfaces of the cutters 10 on both sides and the surface of the traveling metal strip 3. The first plate holding guide 4 is installed,
Further, the cutter stand 2 is positioned on the upstream side in the retracting direction of each cutter 10 on each rotating shaft 1, 1, and the leading end in the retracting direction is close to the upstream side in the retracting direction of the outer peripheral surface of each cutter 10, 10. The second plate pressing guide 5 is placed in a state where it is covered and is in sliding contact with or close to the surface of the traveling metal strip 3.
[0009]
The metal sheet slitter plate pressing structure according to claim 2 is the plate pressing structure according to claim 1, wherein each first plate pressing guide 4 and the second plate pressing guide adjacent to the first plate pressing guide 4 are provided. The guide 5 is a separate plate-like material.
[0010]
The plate holding structure of the metal strip slitter according to claim 3 is the plate holding structure of claim 2,
The cutter stand 2 is configured to slit the metal strip 3 into a number of metal strips 30 having a certain width,
The cutters 10 of the respective rotary shafts 1 and 1 are arranged in a state in which wide portions corresponding to the width of the metal strip 30 and narrow portions are alternately positioned.
On both side surfaces of the first plate pressing guide 40 located in a portion where the distance between the cutters 10 is narrow in the first plate pressing guide 4 positioned between the cutters 10 of each rotary shaft 1, The second plate pressing guides 5 and 5 adjacent to both sides of the first plate pressing guide 40 are fixed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of a metal strip slitter plate pressing structure according to the present invention will be described below with reference to FIGS.
FIG. 1 is a partial cross-sectional view showing an embodiment of a metal sheet slitter plate holding structure according to the present invention, FIG. 2 is a partially enlarged plan cross-sectional view of the plate holding structure of FIG. 1, and FIG. 4A is a side view showing a combined state of a part of the first plate pressing guides and the second plate pressing guides on both sides thereof, and FIG. 4B is a diagram of FIG. It is a partially broken rear view of the plate pressing guide.
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 the description thereof is omitted.
[0012]
The configuration of the portion other than the metal sheet slitter plate holding structure of FIG. 1 is the same as that of the metal strip slitter of FIG.
Horizontal support members 24 and 24 are attached to the upper and lower frames 22 and 23 on both sides of the cutter stand 2 so as to be positioned above the position where the slit portion 20 is sandwiched, and below the position where the slit portion 20 is sandwiched. Parallel horizontal support members 25, 25 are attached so as to be positioned.
The upper support members 24, 24 support the upper portions of a number of first plate pressing guides 4 and second plate pressing guides 5, and the lower support members 25, 25 support the first plate pressing guides 4, 24. The lower end portion of the plate pressing guide 4 is supported.
[0013]
The first plate pressing guide 4 is positioned between the adjacent cutters 10 of the respective rotary shafts 1 and 1 and is in sliding contact with or close to the side surfaces of the cutters 10 on both sides and the surface of the traveling metal strip 3. It is arranged in a state to do.
The second plate pressing guide 5 is located on the upstream side in the retracting direction of each cutter 10 on each of the rotary shafts 1, 1, and the leading end (lower end in FIG. 1) is the outer periphery of each cutter 10, 10. It is arranged so as to be close to the upstream side of the surface in the retracting direction and to be in sliding contact with or close to the surface of the traveling metal strip 3.
In this embodiment, the metal strip 3 has a thickness of 70 μm, whereas the opposing distance between the plate pressing guides 4 and 5 facing each other via the traveling metal strip 3 is about 200 μm.
[0014]
Each first plate pressing guide 4 and the second plate pressing guide 5 adjacent to the first plate pressing guide 4 are composed of different plate-like materials (for example, bakelite with cloth), The second plate pressing guide 5 is installed such that both side surfaces thereof are in contact with or close to the side surface of the adjacent first plate pressing guide 4.
In this embodiment, the cutter stand 2 is configured so as to slit the metal strip 3 into a large number of metal strips 30 having a constant width. Wide portions corresponding to the width (16 mm) and narrow portions (interval 4 mm) are alternately arranged.
The first plate pressing guides 4 positioned between the cutters 10 of the respective rotary shafts 1 are arranged on both side surfaces of the first plate pressing guide 40 positioned at a portion where the distance between the cutters 10 is narrow. In particular, as shown in detail in FIG. 4, the second plate pressing guides 5, 5 adjacent to both sides of the first plate pressing guide 40 are fixed by a plurality of sets of bolts and nuts 50. These bolts and nuts 50 are configured not to protrude from the surface of the second plate pressing guide 5.
[0015]
The front end portions (lower end portions in the drawing) of the second plate holding guides 5 and 5 are covered with the outer peripheral portion of the cutter 10 in the slit portion 20 so as to be close to the upstream side in the retracting direction. 3 is formed on an inclined surface 51 that inclines upward from the front side facing the rear side.
The upper end portions of the first plate holding guides 4 and the second plate holding guides 5 are formed in inclined surfaces that descend downward toward the traveling metal strip plate 3.
In the first plate pressing guide 4, the first plate pressing guide 40 having a small thickness, and the second plate pressing guide 5 fixed to both upper side surfaces of the first plate pressing guide 4, the front side facing the metal band plate 3 is arranged. In order to alleviate the shock at the time of contact with the metal strip 3 traveling at high speed, as shown in FIG. 4 (a), it is covered with a flannel, non-woven fabric, knitted fabric, felt or other fiber sheet 41.
[0016]
The clearance between the first plate pressing guide 40 with a small thickness and the side surfaces of the cutters 10 on both sides thereof, the clearance between the first plate pressing guide 4 with a large thickness and the side surfaces of the cutters 10 on both sides, and the thickness The clearance between the first plate pressing guide 4 having a large height and the second plate pressing guides on both sides thereof is set to about 200 to 500 μm.
[0017]
According to the plate pressing structure of this embodiment, in the slit portion 20 of the cutter stand 2, the rotary shafts 1, 1 are positioned between the adjacent cutters 10, and the side surfaces of the cutters 10 on both sides are running. In addition to installing the first plate pressing guide 4 that is in sliding contact with or close to the surface of the metal strip 3, it is located on the upstream side in the retraction direction of each cutter 10 on each of the rotary shafts 1 and 1, and the front end in the retraction direction Since the second plate pressing guide 5 is placed in the state of covering the proximity of the outer peripheral surface of each cutter 10, 10 in the retraction direction upstream side, and in sliding contact with or close to the surface of the traveling metal strip 3. First, on the upstream side in the retracting direction of the slit portion 20 of the cutter stand 2, the metal strip 3 is formed by each plate pressing guide over almost the entire width until just before being caught between the corresponding cutters 10, 10. Sandwiched Te is guided in a flat state, the attitude variations of such striations does not occur. Therefore, the breakage of the metal strip 30 at the time of slitting and the occurrence of abnormalities (jagged edges) are prevented.
Secondly, the first plate pressing guide 40 having the smaller wall thickness and the second plate pressing guide 5 adjacent to the first plate pressing guide 40 are formed of different plate-like materials, Since the second plate presser guide 5 is fixed, the first plate presser guide 40 and the second plate presser guides 5 and 5 on both sides thereof can be handled integrally, and the plate presser guides can be used. It can be configured with high accuracy.
Thirdly, since the fiber sheet 41 is coated on the front side facing the metal strip 3 of the plate pressing guide, the shock at the time of contact with the metal strip 3 running at high speed is applied to the fiber sheet. 41 can be absorbed.
[0018]
Other Embodiments In the above-described embodiment, the metal strip 3 is traveled downward, and is configured to slit during the downward travel. However, the metal strip 3 travels in a direction other than the downward travel during the horizontal travel. It can comprise so that it may slit, making it.
Moreover, it can implement even if it comprises so that the metal strip 3 may be slit to the metal strip 30 of several different widths instead of the structure which slits the metal strip 30 of the same width.
[0019]
【The invention's effect】
According to the metal strip slitter plate pressing structure according to the first aspect of the present invention, in the slit portion 20 of the cutter stand 2, the rotary shafts 1, 1 are positioned between the adjacent cutters 10, and on both sides. In addition to installing a first plate pressing guide 4 that is in sliding contact with or close to the side surface of the cutter 10 and the surface of the traveling metal strip 3, the upstream side in the retraction direction of each cutter 10 on each of the rotary shafts 1 and 1 located in, retraction direction of the tip of the cutter 10, 10 overlies adjacent the retracting direction upstream side of the outer peripheral surface, and the surface of the metal strip 3 traveling sliding or neighboring states second Since the plate pressing guide 5 is installed, on the upstream side of the slit portion 20 of the cutter stand 2 in the retracting direction, the metal strip 3 extends over almost the entire width until immediately before being caught between the corresponding cutters 10 and 10. Is sandwiched by the plate pressing guides are guided in a flat state, the attitude variations of such striations does not occur. Therefore, the breakage of the metal strip 30 at the time of slitting and the occurrence of abnormalities (jagged edges) are prevented.
[0020]
According to the metal sheet slitter plate pressing structure according to the second aspect of the present invention, the first plate pressing guide 4 and the second plate pressing guide are made of different plate-like materials. Easy replacement of breakage of typical guides.
[0021]
According to the metal sheet slitter plate pressing structure according to the third aspect of the present invention, the first plate pressing guide 40 having the smaller wall thickness and the second plate pressing guide 5 adjacent thereto are separated into different plates. Since the second plate pressing guide 5 is fixed to both surfaces of the first plate pressing guide 40, the first plate pressing guide 40 and the second plate pressing guides 5 and 5 on both sides thereof are integrated. In addition, the plate pressing guide can be constructed with high accuracy.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing an embodiment of a metal sheet slitter plate holding structure according to the present invention.
FIG. 2 is a partially enlarged plan sectional view of the plate pressing structure of FIG.
FIG. 3 is a partial cross-sectional view taken along arrow AA in FIG.
FIG. 4 shows a combined state of a thin first plate pressing guide and second pressing guides on both sides thereof, (a) is a side view of the combined state, (b) is the drawing It is a partially broken rear view of a combined state.
FIG. 5 is a partial cross-sectional view showing a plate holding structure of a conventional metal strip slitter.
6 is a partially enlarged plan sectional view of the plate pressing structure of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating shaft 10 Disc-shaped cutter 11 Spacer 2 Cutter stand 20 Slit parts 21, 22, 23 Frame 24, 25 Support member 3 Metal strip 30 Metal strips 4, 40 First plate pressing guide 4a Plate pressing guide 4b Scrap Plate holding guide 41 Fiber sheet 5 Second plate holding guide 50 Bolt nut 51 Inclined surface 6 Direction changing pinch roller 7 Sorting pinch roller

Claims (3)

While fixing a large number of disc-shaped cutters (10, 10) at predetermined intervals to the rotating shafts (1, 1) installed in parallel, while rotating the rotating shafts (1, 1) in opposite directions, By continuously feeding a wide metal strip (3) 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), In the slit portion (20) of the cutter stand (2) that slits the metal strip (3) into a large number of narrow metal strips (30),
The cutter stand (2) is positioned between the adjacent cutters (10) of the rotary shafts (1, 1), and the side surfaces of the cutters (10) on both sides and the running metal strip (3 The first plate pressing guide (4) that is in sliding contact with or close to the surface of
Further, the cutter stand (2) is positioned upstream of each cutter (10) in each revolving shaft (1, 1) in the retracting direction, and the tip in the retracting direction is the outer peripheral surface of each cutter (10, 10). The second plate pressing guide (5) is placed close to the upstream side in the retracting direction and is in sliding contact with or close to the surface of the traveling metal strip (3).
Metal strip slitter holding structure.  Each first plate pressing guide (4) and the second plate pressing guide (5) adjacent to the first plate pressing guide (4) are different plate-like materials, The metal sheet slitter plate holding structure according to claim 1. The cutter stand (2) is configured to slit the metal strip (3) into a number of metal strips (30) having a constant width,
The cutter (10) of each rotary shaft (1, 1) is arranged in a state where a wide interval corresponding to the width of the metal strip (30) and a narrow interval are alternately positioned,
1st board presser located in the part with a narrow space | interval between cutters (10) in the 1st board presser guide (4) located between the cutters (10) of each rotating shaft (1). Second plate pressing guides (5, 5) adjacent to both sides of the first plate pressing guide (40) are fixed to both side surfaces of the guide (40),
A plate holding structure for a metal strip slitter according to claim 2.

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