JP2994423B2 - Universal slitting method and universal slitter for strips - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of slitting a strip which does not generate burrs at the time of slitting, and an improvement of a universal slitter.

(Prior art and its problems) A conventional universal slitter (B ') is a cutting machine formed by a roller which covers the entire width of a shear deformation portion (X') and an elongated strip (1 ') as shown in FIG. A part (Y ') is juxtaposed at a certain interval, and a shearing force is applied to the strip (1') at the shearing deformation part (X ') shown in FIG. A stepped portion (7 ') is formed, and then the entire width of the strip (1') is pressed at once by the rollers of the cut portion (X ') to return to the original flat strip shape. However, at this time, the strip material (1 ') has a thin width (1') with no burrs due to the application of shear force in the opposite direction to the step-like portion (7 ').
a ').

Now, the strip (1 ') has a crown (a lens-shaped cross section in which the thickness at the center is larger than the thickness at both ends as shown in Fig. 9) due to the effect of the cold rolling. The strip (1 ') is deformed stepwise at the shearing portion (X') as shown in FIG. 6, and the shearing portion (7 ') is then deformed. When the entire strip (1 ') is pressed by the elongated roller (Y'), the central portion of the thick strip (1 ') is strongly pressed and completely cut at the central step (7a'). However, the side portions are weakly pressed by the cut portion (Y '), and the side stepped portion (7b') is not sufficiently returned to the flat plate, so that a portion that is not cut may occur. Was.

Further, as shown in FIG. 7, since the shearing portion (X ') and the shearing roller (Y') are separated from each other, there is a problem that the apparatus becomes large.

Further, the shafts (2a ', 2b') of the shearing deformation portion (X ') equipped with the ring-shaped deformation cutter (5') cannot be supported at the intermediate portion because of rotation, and there is fear of bending. Shaft (2
a ′, 2b ′) cannot be made long or thin, and there is also a restriction that a thick and short axis must be used.

(Object of the present invention) The present invention has been made in view of the problems of the conventional example, and the object of the present invention is, firstly, that even a band material having a crown can be completely cut regardless of its portion. Secondly, the shear deformation portion and the cutting portion can be installed at almost the same place, and the size of the device can be made compact. Thirdly, since the shaft does not rotate, it can be easily held at the intermediate portion and the shaft can be easily cut at the time of cutting. It is an object of the present invention to provide a method of slitting a band material and a slitter capable of preventing bending.

(Means for Solving the Problems) In order to solve the above problems, the method of the present invention is characterized in that, in claim (1), (1) each of the fixed shafts arranged vertically and 1 comprising a pair of upper and lower deformable cutters eccentrically and rotatably mounted, and a pair of upper and lower shear rollers adjacent to each deformable cutter and rotatably mounted coaxially with each fixed shaft.
By passing the band between the pair of fixed shafts, a shear force is applied to the band by the pair of deformable cutters to deform the shear force acting portion into a step shape, and immediately thereafter, the shear force acting portion is formed. A shear force in the opposite direction is applied by the pair of shear rollers to deform the shear force acting portion in a reverse step shape and cut the shear force acting portion. In the universal slitter (A) for a strip according to the present invention described in claim (2), the fixed shafts (2a) and (2b) are arranged as described above, and are adjacent to each other and eccentric to one another. The housing (3a) for the deformed cutter and the housing (4a) for the shearing roller are mounted on the upper fixed shaft (2a) in the reverse order with respect to both housings (3a) and (4a) of the upper fixed shaft (2a). So that the other side is eccentric with respect to one side. Attach the lower housing (3b) and the shear roller housing (4b) to the lower fixed shaft (2b), and use the ring-shaped deformation cutters (5a) (5b) and the ring-shaped shear rollers (6a) (6b). And the housing (3a) (3b) for the deformed cutter and the housing (4a) (4b) for the shearing roller.
And rotatably attached to each.

In the third aspect, the universal slitter (A) is provided with the deformable cutters (5a) (5b) and the shear rollers (6a) (6b). The strip slitter (A) according to claim 2, wherein the vertical interval (H) between the deformed edges of the upper and lower deformable cutters (5 a, 5 b) is made smaller than the plate thickness (t) and the upper and lower shears. The interval (S) between the rollers (6a) and (6b) is set to be approximately the plate thickness (t).

In claim (4), as an alternative to claim (3), the slitter (A) for strip material (A) according to claim (2) includes a vertically deformable cutter (5a). The vertical interval (H) between the deformed edges in (5b) and the interval (S) between the upper and lower shear rollers (6a) and (6b) are made smaller than the plate thickness (t).

 The technical means of:

(Action) When a shearing force is applied to the band material (1) with the upper and lower deforming cutters (5a) and (5b), the shearing force acting portion is about 1/2 to 2 of the plate thickness (t).
Steps (7)... Are formed with a size of about / 3. Subsequently, the steps (7) are drawn between the shear rollers (6a) and (6b) which are immediately behind the deforming cutters (5a) and (5b), and pressure is applied to the steps (7). To form an original flat plate or an inverted step. At this time, a strong shearing force is applied to the step portions (7) so that the stepped portions (7) are cut without generating burrs. Thus, the wide band material (1) is cut into a plurality of band members (1a).

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 is a schematic sectional view of the universal slitter (A) of the present invention, FIG. 2 is an enlarged detailed sectional view thereof, and FIG. 3 is a side view. Fixed shafts (2a) and (2b) are arranged vertically, and both ends are supported by bearings (8a) and (8b).
The shaft interval between the fixed shafts (2a) and (2b) can be widened and narrowed freely. At the left end of the upper and lower fixed shafts (2a) and (2b), flanges (9a) and (9b) protrude, and the upper fixed shaft (2a)
Is provided with a shear roller housing (4a) so as to be in contact with the flange (9a), and a deformable cutter housing (3a) is mounted on the right side of the drawing in contact with the shear roller housing (4a). Have been. Further, a sleeve (10) corresponding to the width of the band-shaped body (1a) which is cut in contact with the deformed cutter housing (3a) is mounted. The sleeve (10) is followed by a deformed cutter housing (3a). ) Is attached. As described above, the deformable cutter housing (3a), the shear roller housing (4a) and the sleeve (10) are sequentially mounted on the upper fixed shaft (2a). Generally, the order of mounting is such that the housing in contact with the sleeve (10) is of the same type as shown in FIG. However, the housing in contact with the sleeve (10) may be of a different type, although the cut strip (1a) is inclined. Also, lower fixed shaft (2b)
The housings (3b) and (4b) mounted on the upper fixed shaft (2a) are mounted so that the order is reversed. This makes a pair of upper and lower deformed cutters (3a) (3b)
Thus, a shearing force is applied to the band material (1).
Tightening nuts (11a) (11b) are screwed into the right ends of the upper and lower fixed shafts (2a) (2b) via sleeves (10) ..., and the housing faces the left end flanges (9a) (9b). (3a) (4a)
And the sleeve (10) are firmly tightened. Next, according to FIGS. 2 to 6, the deformed cutter (5a)
(5b) and the details of the shear rollers (6a) and (6b) will be described. The key (12) is fitted into the upper and lower fixed shafts (2a) (2b), and the housing bodies (31a) (31b) (41a) (41b) of both housings (3a) (3b) (4a) (4b) Of each housing body (31a) (31
b) (41a) (41b) and the fixed shafts (2a) (2b) are integrated respectively. The number of key grooves (13) may be one, but both housing bodies (31a) (31b) (41a) (41b),
Alternatively, one of the housing bodies (31a) (31b) (41a) (41
In b), a plurality of keyways (13)... may be provided at predetermined intervals. When the keyway (13) is formed at a plurality of locations, the distance (H) between the deformed edges of the deformable cutters (5a) and (5b) and the distance (S) between the shear rollers can be changed by selecting the keyway (13). I can do it. In the illustrated embodiment, the fixed shaft (2a) (2b)
And the deformation cutters (5a) and (5b) are coaxial with each other, and the shear rollers (6a) and (6b) are eccentric. The housing body (41a) of the shear roller housings (4a) and (4b) on the eccentric side. The keyway (13) is recessed at one or more places in (41b). If there is only one keyway (13),
By rotating the fixed shafts (2a) and (2b), the interval (S) between the shear rollers (6a) and (6b) is enlarged or reduced. Keyway (1
In the case where there are a plurality of 3), the same action can be obtained by appropriately selecting the key groove (13).

Further, the present invention is not limited to the example shown in the figure, and a plurality of key grooves (13) may be recessed by eccentrically deforming the cutters (5a) and (5b). (41b) is eccentric, and both housing bodies (31a) (41a), (31b) (41
In b), a plurality of keyways (13) may be recessed. Also, adjacent housing bodies (31a) (41a), (31b) (41b)
Although they are pressed against each other by the tightening nuts (11a) (11b), they are rotatably mounted on the housing bodies (31a) (31b) (41a) (41b) via bearings (17a) (17b). Deformed cutter mounting block (15a) (1
5b) and the shear roller mounting blocks (16a) (16b), as well as the deforming cutters (5a) (5b) and the shear rollers (6a) (6b) are very slightly but spaced apart. The housing body (31a) (31b) (41a) (41b) and both blocks (15a) (1
5b) The lids bolted to the outer surfaces of (16a) and (16b) are the bearing holding plates (18a) (18b) (18a ') (18
In b '), the inner and outer bearing cases are pressed.
(19) is an oil seal. Further, strip holding shear rollers (20a) (20b) are mounted on the outer periphery of both blocks (15a) (16a), (15b) and (16b). Rubber ring (21a)
(21b) is inserted.

In the first embodiment, the interval (H) between the deformed edges of the upper and lower deformed cutters (5a) and (5b) as shown in FIGS.
Are set to about 1/2 to 2/3 of the sheet thickness (t) in accordance with the crown of the strip (1), and the shear rollers (6a) (6b) of each part Is set substantially equal to the plate thickness (t).

Reference numeral (22) denotes an intermediate support member that supports the upper and lower fixed shafts (2a) and (2b) provided as necessary at an intermediate portion.

Then, the uncoiled strip (1) is guided to the deformed cutter section (X) of the slitter (A), and first, as shown in FIG. 1, the shear force is applied by the upper and lower deformed cutters (5a) and (5b). In addition, stepped portions (7) are formed in the sheared portion with a size of about 1/2 to 2/3 of the plate thickness (t). Subsequently, the steps (7) are drawn between the shear rollers (6a) and (6b) that are immediately behind the deforming cutters (5a) and (5b), and pressure is applied to the steps (7). At this time, a strong shearing force is applied to the stepped portions (7)..., So that the steps (7) are cut without generating burrs. Thus, the wide band material (1) is cut into a plurality of band members (1a). The strip (1a) is taken off by a taking-off shearing roller (23) located behind the shearing rollers (6a) (6b). The cut strips (1a) are recoiled, packed, and shipped. (Fig. 4 (a)
(B)) Here, the deformation amount by the deformation cutters (5a) and (5b) is
The strip (1) is cut and deformed to about 2/3 of the thickness (t) (H = 1/3 in FIG. 4 (a)).

In the second embodiment, as shown in FIGS. 5 (a) and 5 (b), the cutting cutters (5a) and (5b) are first subjected to cutting deformation of about 1/3 of the wall thickness (t), and then the shearing roller ( 6a) In (6b), a cut of about 1/3 is made in the opposite direction, and the part is sheared. That is, the interval (H) between the shearing edges of the deformation cutters (5a) and (5b) is about 2/3 of the sheet thickness (t), and the interval (S) of the shearing rollers is also about 2/3 of the sheet thickness (t). It is set as follows. When the shear rollers (6a) and (6b) are pressed in the reverse steps as described above, a stronger shear force is applied than in the first embodiment. In this case, more reliable cutting can be performed than in the first embodiment. .

The shearing rollers (6a) and (6b) are used to crush the shearing force acting portion to correct it into a flat plate shape or to deform it into a stepped shape. Instead, use a cutter with a sharp edge. It is also possible to complete the shearing.

(Effects) According to the method of the present invention, a pair of upper and lower deformable cutters and each deformable cutter eccentrically attached to each fixed shaft and rotatably mounted on each of the vertically arranged fixed shafts are provided. By passing the band between a pair of fixed shafts adjacent to the cutter and having a pair of upper and lower shearing rollers rotatably mounted coaxially with each fixed shaft, the band is subjected to the pair of deformations. A shearing force is applied by a cutter to deform the shearing force acting portion into a stepped shape.
Since a shear force in the opposite direction is exerted by the pair of shear rollers to deform the shear force acting portion in a reverse step shape and cut the shear force acting portion, an extremely large shear force is applied to the shear portion, and There is an advantage that a sharp cutting can be performed.

In the slitter according to the present invention, a fixed shaft is disposed vertically, and a deformable cutter housing and a shear roller housing are attached to an upper fixed shaft so as to be adjacent to each other and eccentric relative to one another. Attaching the housing for the cutter and the housing for the shearing roller to the lower fixed shaft in the reverse order with respect to both housings of the upper fixed shaft and so that the other is eccentric with respect to the other, a ring-shaped deformation Since the cutter and the ring-shaped shear roller are rotatably mounted on the deformed cutter housing and the shear roller housing, respectively, the deformed cutter and the shear roller are mounted on the same fixed shaft, There is an advantage that the size of the apparatus can be reduced despite the fact that cutting without burr can be performed. Furthermore, since the shear roller is installed in pair with the deformation cutter, the shear roller interval can be individually determined according to the crown of the strip,
There is an advantage that a strip having a crown can be completely cut regardless of its portion. Further, since the shaft does not rotate, there is an advantage that the shaft can be easily held at the intermediate portion and the bending of the shaft during cutting can be prevented.

According to a third aspect of the present invention, in the belt-shaped universal slitter according to the second aspect, the vertical interval between the deforming edges of the upper and lower deforming cutters is made smaller than the plate thickness, and the interval between the upper and lower shearing rollers is made substantially smaller. Since the thickness is increased, a strong shearing force is applied to the stepped portion when the flattened state of the stepped portion is corrected by the shearing roller, and cutting can be performed without generating burrs. Claim (2)
In the strip-shaped slitter, the vertical interval between the deforming edges of the upper and lower deforming cutters and the interval between the upper and lower shearing rollers are made smaller than the plate thickness, so that the step formed by the deforming cutter is reversed by the shearing rollers. An extremely strong shearing force is applied by being formed in the step portion of the shape, and there is an advantage that more reliable cutting can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of the slitter of the present invention. FIG. 2 is an enlarged longitudinal view of a deformed cutter part of the present invention. FIG. 3 is a side view of FIG. FIGS. 5 (a) and 5 (b)... Illustration of a slitting process according to a second embodiment of the present invention. FIG. 6... FIG. 8 is a perspective view of a cut portion of the strip when cut by a conventional slitter. FIG. 9 is a longitudinal cross-sectional view in which the crown of the strip is exaggerated. Universal slitter. ), Band material ... (1),
Fixed shaft ... (2a) (2b), deformed cutter housing ...
… (3a) (3b), Shear roller housing …… (4a)
(4b), Deformation cutter ... (5a) (5b), Shearing roller ...
(6a) (6b), vertical spacing of deformed edges (H), plate thickness (t), shear roller spacing (S)

Claims (4)

(57) [Claims] 1. A pair of upper and lower deformable cutters eccentrically mounted on each of the fixed shafts disposed vertically and rotatably mounted on each of the fixed shafts, and rotatable adjacent to each deformable cutter and coaxial with each of the fixed shafts. By passing the strip between a pair of fixed shafts having a pair of upper and lower shear rollers attached to the
A shear force is applied to the band material by the pair of deformable cutters to deform the shear force acting portion into a step shape, and immediately thereafter, a reverse shear force is applied to the shear force acting portion by the pair of shear rollers. The shearing force acting portion is deformed into a stepped shape in the opposite direction to cut the shearing force acting portion. 2. An upper fixed shaft is provided with a deformable cutter housing and a shearing roller housing mounted on the upper fixed shaft so as to be adjacent to each other and eccentric relative to one another. A deformable cutter housing and a shear roller housing are mounted on a lower fixed shaft in reverse order to both housings and the other is eccentric with respect to the other, and a ring-shaped deformed cutter and a ring-shaped shear roller are mounted. A universal slitter for a strip material, wherein the universal slitter is rotatably mounted on the deformable cutter housing and the shear roller housing. 3. The universal slitter according to claim 2, wherein the vertical interval between the deforming edges of the upper and lower deforming cutters is smaller than the plate thickness, and the interval between the upper and lower shear rollers is approximately the plate thickness. A universal slitter for strips. 4. A strip material according to claim 2, wherein the vertical interval between the deforming edges of the upper and lower deforming cutters and the interval between the upper and lower shearing rollers are smaller than the plate thickness. Universal slitter.