JPH03196912A - Slitter method for metal plate - Google Patents

Abstract

PURPOSE:To simplify a device without the need for a driving device and to apply for a narrow width and multi streak slit, by performing the draw-cut slitting of a strip with the driven rotation of a pair of the upper and lower circular edges by the strip moved by the traction in the traveling direction. CONSTITUTION:A pair of the upper and lower circular edges 1, 1' actuate cylinders 9, 9 at both ends, separated each other by ascending an upper frame 8 and a gap (t) is formed between the circular edges 1, 1'. A strip 2 is inserted in the travelling direction from a head 2' in that state, the head 2' is interposed on a pinch roll for traction or wound on a winding roll. Thereafter, the upper frame 8 is descended by operating the cylinders 9, 9, and a slit 3 can be given to the strip 2. The head 2' is then tracted in an arrow mark 4 direction by turning the pinch roll or winding roll, just as holding that state, and the circular edge couple 1, 1' are rotated with their being driven by the movement of the strip 2 and a slit 3' is realized.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a method for slitting metal plates.

``Prior Art'' In order to improve the precision of the slitter, an independent arbor type slitter in which each round blade unit can be independently positioned has been proposed (Japanese Patent Application No. 1-49150). However, the independent arbor type has a problem in that the round blade drive device is interposed between the round blade units, making it difficult to reduce the distance between the units and making narrow slits impossible.

In addition, tests conducted by the present inventors have revealed that with the independent arbor one-type slitter, a sufficient cut surface can be obtained by only pulling the cut without driving the round blade. Despite this, it is not possible to employ a non-driven slitter because it is impossible to pass the head of the strip through the slitter, that is, it is impossible to locate the beginning of the strip.

[Problems to be Solved by the Invention] An object of the present invention is to provide a method for locating the beginning of a strip in a non-driven slitter.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a cutter device comprising a plurality of round blade units each having a pair of upper and lower round blades supported on a horizontal axis perpendicular to the strip running direction. In this step, the pair of round blades are separated in the vertical direction to form a gap between the round blades, a strip is inserted into the gap in advance, and then the pair of round blades is brought close to each other and the round blades are used to cut into the strip. The metal plate is characterized in that the strip is pulled in the running direction while maintaining that state, and the pair of round blades are rotated as a result of the strip moving due to the pulling, thereby cutting and slitting the strip. Constructed by slitter method.

[Operation J] Therefore, when the pair of round blades 1 and 1' are vertically separated for each of the plurality of round blade units 5.5 or simultaneously, a gap t is formed between the round blades 1.1' through which the strip 2 can be inserted. be done (first
From Fig.
' After the strip is inserted in the running direction, the round blade 1.1' is brought into close contact with the upper and lower surfaces of the strip 2, and the cut 3 can be made in the strip 2 by the round blade 1.1'. Figures 1 and 2 (b). By maintaining this state and pulling the head 2' in the walking direction (arrow 4), the pair of round blades 1.1' are driven at the same peripheral speed as the moving speed of the strip 2 and rotate in opposite directions. The strip 2 can be cut.

"Example" A lower frame 7 is constructed on the machine base 6.6, and a space S is created above the lower frame 7.
An upper frame 8 is constructed through the upper frame 8, and both ends of the upper frame 8 are supported by cylinders 9.9 provided at both ends of the lower frame 7 so as to be able to move up and down. A pair of upper and lower horizontal axes 10.1σ parallel to the upper and lower frames 7.8 are provided on the opposing portions of the upper and lower frames 7.8, and a pair of upper and lower round blades 1.1σ are provided on the horizontal axes 10.10'. 1' is provided, and a round blade unit 5 is formed in the space S, and a cutter device is formed by the plurality of round blade units 5.5 (FIGS. 1, 2, and 3). The strip 2 runs in the direction of the arrow 4 between the upper and lower pairs of round blades 1.1' in the space S, at right angles to the upper and lower frames 7.8. The upper and lower pair of round blades l, 1' are separated from each other by operating the cylinders 9.9 at both ends to raise the upper frame 8, thereby forming a gap t between the round blades 1.1'. (The state is shown in Figure 1 (a)). In that state, for example, 0.05~
A strip 2 approximately 1.0 mm thick is inserted from the head 2' in the running direction (arrow 4), and the head 2' is held between pinch rolls for traction or wound onto a take-up roll. (not shown). Thereafter, the cylinder 9.9 is operated to lower the upper frame 8, and the cut 3 can be made in the strip 2 (see Fig. 1 (B) and Fig. 2 (B)).
Then, while maintaining this state, when the pinch roll or take-up roll is rotated to pull the head 2' in the direction of arrow 4, the pair of round blades 1.1' are rotated by the movement of the strip 2. The slit 3' is realized (see Fig. 1 (c) (: 1), Fig. 2 (c) (: 1). The fine elevation adjustment device 1 of the upper frame 8) is as shown in Fig. 6. The sliding fitting I3 facing the tapered surface 12 provided on the upper frame 8 is screwed to the forward/reverse rotary screw rod 14 provided on the lower frame 7 side to cause the upper frame 8 to reciprocate and slide. ), the pair of round blades l, 1 can be raised and lowered by a small amount.
’ wrap can be finely adjusted. The adjustment device 1) fixes the upper frame 8 and raises and lowers the lower frame 7, or moves the upper and lower frames 7.
8 may be raised and lowered to finely adjust the wrap of the round blade 1.1'. 15 is a strip receiving roll, 16 is a slit band plate receiving roll, 17 in FIG. 4 is a straight inner rod, and 18 is a lifting guide tube for the upper frame 8 which fits into the rod 17. In addition, in the above-mentioned series of strip cutting operations, instead of raising and lowering the upper frame 8, the lower frame 7 is raised and lowered, and the strip 2 is inserted between the upper and lower slitters (round blades) 1.1', and the same series of operations as above are performed. It is possible to perform cutting work.

"Effects of the Invention" The present invention does not require any device for driving the upper and lower pair of round blades 1.1' by the method described above, which not only greatly simplifies the device and reduces power and manufacturing costs, but also enables the round blades 1.1' to be driven. Since it is not necessary to interpose the blade drive device between the round blade units 5.5, the width between the units 5.5 can be reduced, which has the effect of being applicable to narrow multi-line slits.

[Brief explanation of drawings]

Figure 1 shows the metal plate slitting method of the present invention, in which (a) is a side view of the round blade in a state where the round blade is separated, (b) is a side view of the cutting state, and (the old diagram is a side view of the slit starting state). figure,
(The gradient diagram is a side view of the slit state, and Figure 2 is a side view of the slit state.
Figures c) and (d) are plan views of Figures 1 (a), (b), (c) and (d), respectively, Figure 3 is a front view of the slitting device, and Figure 4 is taken along line A-A in Figure 3. 5 is a right side view of FIG. 3, and FIG. 6 is a side view of the fine elevation adjustment device. ■, 1'...Round blade, t...Gap, 2...Strip, 3
...Depth of cut, 4...Driving direction.

Claims (1)

[Claims] (1) In a cutter device comprising a plurality of round blade units each consisting of an upper and lower pair of round blades supported on a horizontal axis perpendicular to the strip running direction, the pairs of round blades are separated in the vertical direction and the round blades are A gap is formed between the blades, a strip is inserted into the gap in advance, and then the pair of round blades is brought close to each other to make a cut in the strip by the round blade, and this state is maintained to move the strip in the running direction. A metal plate slitting method characterized in that the pair of round blades are driven to rotate by the strip that is pulled and moved by the pull to cut and slit the strip.