Metal band slitter device and slitting method
AssigneeHitachi Metals, Ltd.
InventorsRyo Nishimura, Katsuya Kobayashi, Akihiro Maeta
Life of this patent
Estimating the term…
Abstract
Provided is a slitter device capable of quickly supplying metal bands to a cutter stand and cutting same into strips with high speed and accuracy. The metal band slitter device comprises an unwinder that unwinds a metal band wound into a coil, a cutter stand that cuts the unwound metal band into narrow width strips, and a winder that winds the cut metal band into coils. The metal band slitter device is configured to comprise a tension adjustment unit on the winder side between the unwinder and the cutter stand that provides a constant tension to the metal band and a tension separating unit on the cutter stand side that separates the constant tension on the input side and tension on the output side.
Claims13
A metal band slitter device, comprising:
- an unwinder which unwinds a metal band wound in a coil form,
- a tension adjusting unit,
- a tension separating unit,
- a cutter stand which cuts the unwound metal band into a plurality of narrow width strips, and
- a winder which winds each strip into a coil form,
- wherein the tension adjusting unit and the tension separating unit are located between the unwinder and the cutter stand,
- wherein the tension adjusting unit is located between the unwinder and the tension separating unit,
- wherein the tension separating unit is located between the tension adjusting unit and the cutter stand,
- wherein the tension adjusting unit controlled together with the unwinder gives a constant tension to the metal band between the unwinder and the tension adjusting unit, and
- wherein the tension separating unit changes the constant tension of the metal band entering the tension separating unit to a tension of the metal band leaving the tension separating unit, wherein the tension of the metal band leaving the tension separating unit is a tension smaller than the constant tension of the metal band entering the tension separating unit.
A metal band slitting method, using a slitter device comprising
- an unwinder,
- a tension adjusting unit,
- a tension separating unit,
- a cutter stand, and
- a winder,
- wherein the tension adjusting unit and the tension separating unit are located between the unwinder and the cutter stand,
- wherein the tension adjusting unit is located between the unwinder and the tension separating unit,
- wherein the tension separating unit is located between the tension adjusting unit and the cutter stand,
- the method comprising:
- a step of unwinding a metal band wound on the winder,
- a step of applying a constant tension to the metal band by controlling the tension adjusting unit together with the unwinder,
- a step of adjusting the constant tension of the metal band with the tension separating unit to change the constant tension of the metal band entering the tension separating unit to a tension of the metal band leaving the tension separating unit, wherein the tension of the metal band leaving the tension separating unit is a separate tension from the constant tension of the metal band entering the tension separating unit,
- a step of attenuating the tension given to the metal band through the tension separating step, and supplying the metal band to the cutter stand,
- a step of cutting the unwound band into a plurality of narrow width strips, and
- a step of winding each strip into a coil form.
Dependencies are inferred from the claim text.