Corrugated board web cutting device and corrugated board manufacturing device

Patent metadata

Field	Value
Publication number	US-11020929-B2
Application number	US-201816484524-A
Country	US
Kind code	B2
Filing date	Feb 21, 2018
Priority date	Feb 24, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

The present invention is provided with: one slitter device which forms cutting lines on a corrugated board web in a conveying direction and produces a plurality of slitted webs; a plurality of cutoff devices which cut the slitted webs in the width direction; a director device which separates the plurality of slitted webs cut by the slitter device and distributes same to the plurality of cutoff devices; and a separation cutting device which is disposed on the upstream side of the director device, and forms separation cutting lines, which are for separating the plurality of slitted webs with the director device, between the slitted webs of a new order and an old order, wherein the cutting operation is continued after the separation cutting device is stopped at the position of a separation cutting line of the new order.

First claim

The invention claimed is:

1. A corrugated board web cutting device comprising:
one slitter device which forms cutting lines in a corrugated board web along a transfer direction to create a plurality of slitted webs;
a plurality of cutoff devices which cut the plurality of slitted webs along a width direction;
a director device which is disposed between the slitter device and the plurality of cutoff devices to separate the plurality of slitted webs cut by the slitter device and distribute the slitted webs to the plurality of cutoff devices;
a separation cutting device which is disposed further on the upstream side than the director device and forms separation cutting lines for separating the plurality of slitted webs in the director device, between the slitted web of a new order and the slitted web of an old order; and
a control device which controls an operation of the separation cutting device so as to continue a cutting operation for a predetermined time or by a predetermined cutting length after a movement in the width direction is stopped at a position of the separation cutting line of the new order.

2. The corrugated board web cutting device according to claim 1 , wherein the control device
compares a first period which is required for the separation cutting device to move from the separation cutting line of the old order to the separation cutting line of the new order, with a second period which is required for the slitter device to be changed from setting for the old order to setting for the new order, and
controls the slitter device such that the slitter device starts cutting after completion of a change to the setting for the new order, in a case where the first period is equal to or less than the second period.

3. The corrugated board web cutting device according to claim 1 , wherein the control device
compares a first period which is required for the separation cutting device to move from the separation cutting line of the old order to the separation cutting line of the new order, with a second period which is required for the slitter device to be changed from setting for the old order to setting for the new order, and
controls the slitter device so as to start cutting by the slitter device after the separation cutting device moves to the separation cutting line of the new order, in a case where the first period exceeds the second period.

4. A corrugating machine comprising the corrugated board web cutting device according to claim 1 .

5. A corrugating machine comprising the corrugated board web cutting device according to claim 2 .

6. A corrugating machine comprising the corrugated board web cutting device according to claim 3 .

Assignees

• Mitsubishi Heavy Ind Mach Systems Ltd

Inventors

• Takemoto Shuichi
• Fukushige Naoyuki

Classifications

• B31B50/18 Primary

  longitudinally · CPC title

• B31B50/006

  Controlling; Regulating; Measuring; Improving safety · CPC title

• B31B50/20

  Cutting sheets or blanks · CPC title

• B26D5/00

  Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting · CPC title

• B26F3/004

  by means of a fluid jet (methods for use of abrasive blasting for cutting B24C1/045; guns for abrasive fluid jets B24C5/02; perforating by non-mechanical means, e.g. by fluid jet B26F1/26) · CPC title