Slitter device

Patent metadata

Field	Value
Publication number	US-10167158-B2
Application number	US-201715805570-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Nov 8, 2016
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A slitter device includes a first tension detecting unit for obtaining a raw-cloth tension value which is a tension value of a sheet material fed out from a let-off mechanism, a second tension detecting unit for obtaining a divided material tension value which is the sum of the tension values of each of divided sheet materials, and a drive control device which includes a comparator to which the first tension detecting unit and the second tension detecting unit are connected, and which compares the raw-cloth tension value and the divided material tension value with each other; and a drive controller which controls an operating state of a roll driving motor such that the raw-cloth tension value and the divided material tension value coincide or substantially coincide with each other based on the comparison result of the comparator.

First claim

What is claimed is:

1. A slitter device comprising:
a let-off mechanism having a let-off driving unit on which a raw-cloth roller formed by winding up an elongated sheet material in a roll shape is mounted, and which has a let-off driving motor as a driving source for rotationally driving the raw-cloth roller;
a cutter device for dividing the sheet material fed out from the let-off mechanism in a width direction of the sheet material to form a plurality of divided sheet materials, having a plurality of disk-shaped rotary blades provided according to the number of divisions of the sheet material, and having a support roll to which the rotary blade is pressed and around which the sheet material is wound;
a take-up mechanism having a winding shaft on which a plurality of take-up reels for winding up each of the divided sheet materials are supported, and having a take-up driving unit which has a take-up driving motor as a driving source for rotationally driving the winding shaft;
a drive control device or control device for controlling the driving of the let-off driving unit and the take-up driving unit, which performs the drive control of one of the let-off driving unit and the take-up driving unit as a tension control and performs the drive control of the other as a speed control;
a roll driving motor that is connected to the support roll to rotationally drive the support roll;
a first tension detecting unit for obtaining a raw-cloth tension value which is a tension value of the sheet material fed out from the let-off mechanism; and
a second tension detecting unit for obtaining the divided material tension value which is the sum of the tension values of each of the divided sheet materials,
wherein the drive control device includes a comparator to which the first tension detecting unit and the second tension detecting unit are connected, and which compares the raw-cloth tension value and the divided material tension value with each other, and a drive controller which controls an operating state of the roll driving motor such that the raw-cloth tension value and the divided material tension value coincide or substantially coincide with each other based on the comparison result of the comparator.

Assignees

• Tsudakoma Ind Co Ltd

Inventors

• Nishimura Isao

Classifications

• B65H23/1888

  and controlling web tension · CPC title

• B65H35/02

  from or with longitudinal slitters or perforators · CPC title

• B65H23/005

  Sensing web roll diameter (warning or safety devices responsive to a predetermined diameter B65H26/08) · CPC title

• B65H23/044

  Sensing web tension (B65H23/06, B65H23/18 take precedence) · CPC title

• D03J1/08

  for slitting fabric · CPC title