Slitting mechanism for winder

• US 3,891,157 A
• Filed: 06/04/1973
• Issued: 06/24/1975
• Est. Priority Date: 06/04/1973
• Status: Expired due to Term

• Current Assignee: Edgar J. Justus
• Original Assignee: Edgar J. Justus
• Inventors: Justus, Edgar J.
• Primary Examiner(s): Yost, Frank T.
• Application Number:
  US05/365,994
• Time in Patent Office: 750 Days
• Field of Search: 83/53,701,177,425.3,425.2,425.1,425.4,68,58,544,DIG.1 226/45 242/56.4,56.2,56.1,191,189,186
• US Class Current: 242/525.3
• CPC Class Codes: B26F 3/004 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 Class Codes: Y10S 83/01 Safety devices
• CPC Class Codes: Y10T 83/0591 Cutting by direct application of fluent pressure to work
• CPC Class Codes: Y10T 83/364 By fluid blast and/or suction
• CPC Class Codes: Y10T 83/6588 Tools mounted on common tool support
• CPC Class Codes: Y10T 83/659 Tools axially shiftable on support
• CPC Class Codes: Y10T 83/872 With guard means

Abstract

A method and mechanism for slitting and winding a traveling web such as paper into a plurality of adjacent rolls including a web supply and a slitter for cutting the traveling web including a pair of high velocity jets closely laterally spaced in substantial kissing contact with the web directing a high velocity water jet through the web to remove a narrow kerf therefrom and separate adjacent strips of the web and winding the adjacent strips and collecting the water jets and kerf removed from the web for reconstituting the kerf strip such as by pulping for a paper making machine.

Claims

1. A slitter winder for slitting and winding a web such as paper into a plurality of rolls comprising in combination:

means suppling a traveling web;

guide means for the web guiding it through a slitting zone;

a slitting means in the slitting zone having first and second jets on one side of the web for directing high velocity working fluid streams through the traveling web surface spaced laterally for removing a narrow kerf portion from the web to separate adjacent web strips;

a winder positioned to receive and wind said strips into adjacent rolls; and

a receptacle means positioned on the opposite side of the web positioned for receiving the fluid of the jets and for receiving the narrow kerf portion removed from the web with the kerf carried toward the receptacle by the fluid streams.

2. A slitter winder for slitting and winding a web such as paper into a plurality of rolls constructed in accordance with claim 1:

including a high pressure water supply means connected to said jets with the working fluid being water and the traveling web being paper.

3. A slitter winder for slitting and winding a web such as paper into a plurality of rolls constructed in accordance with claim 1:

wherein the jet nozzle has an orifice diameter in the range of 0.001 to .1 inch and is supplied with fluid at a pressure to be emitted from the jet at a velocity in the range from 500 to 4,000 feet per second.

4. A slitter winder for slitting and winding a web such as paper into a plurality of rolls constructed in accordance with claim 3:

wherein the length of the nozzle is in the range of 3 to 30 times the diameter of the nozzle and the liquid supplied is water at a pressure in the range of 10,000 to 100,000 pounds per square inch.

5. A slitter winder for slitting and winding a web such as paper into a plurality of rolls constructed in accordance with claim 1:

including means for adjusting the lateral spacing of said first and second jets to adjust the width of the narrow portion removed therefrom.

6. A slitter winder for slitting and winding a web such as paper into a plurality of rolls constructed in accordance with claim 1:

wherein said jets are supported on a mount pivotal about an axis substantially normal to the web surface so that with rotation of the mount the lateral spacing between the jets will change for controlling the width of the narrow portion removed from the web.

7. A slitter winder for slitting and winding a web such as paper into a plurality of rolls comprising in combination:

means supplying a traveling web;

guide means for the web guiding it through a slitting zone;

a slitting means in the slitting zone having first and second jets for directing high velocity working fluid streams through the traveling web surface spaced laterally for removing a narrow kerf portion from the web to separate adjacent web strips; and

a winder positioned to receive and wind said strips into adjacent rolls;

said jets being positioned in kissing contact with the surface of the traveling web.

8. A mechanism for slitting a traveling web comprising in combination:

unwinder means for supporting an unwinding roll supplying a web traveling at a high speed;

guide means for guiding the web through a slitting zone;

a winder for supporting a rotating winding roll receiving the web from the unwinder means;

a slitter means in said slitting zone including first and second laterally spaced jets for each directing a high velocity working fluid against the surface of the web for removing a kerf of very narrow width to separate the web into adjacent noninterfering web strips and a tension indicating means positioned in advance of said slitting zone and responsive to tension in the web.

9. A mechanism for slitting a traveling web constructed In accordance with claim 8:

wherein said tension indicating means includes an air jet directing a stream of air against the traveling web with means for measuring the air pressure as a function of web tension.

10. A mechanism for slitting a traveling web constructed in accordance with claim 8:

wherein said tension indicator includes a guide roll in engagement with the web with means for measuring the force exerted by the web upon said guide roll.

11. A slitter winder for slitting and winding a web such as paper into a plurality of rolls comprising in combination:

means supplying a traveling web;

guide means for the web guiding it through a slitting zone;

a slitting means in the slitting zone having first and second jets for directing high velocity working fluid streams through the traveling web surface spaced laterally for removing a narrow kerf portion from the web to separate adjacent web strips;

a winder positioned to receive and wind said strips into adjacent rolls; and

protecting means for said fluid streams barring physical contact with the streams.

12. A slitter winder for slitting and winding a web such as paper by a plurality of rolls comprising in combination:

means supplying a traveling web;

guide means for the web guiding it through a slitting zone;

a slitting means in the slitting zone having first and second jets for directing high velocity working fluid streams through the traveling web surface spaced laterally for removing a narrow kerf portion from the web to separate adjacent web strips;

a winder positioned to receive and wind said strips into adjacent rolls;

a protector means preventing physical contact with said fluid streams and movable between a first operative position protecting the streams and a second inoperative position;

means for terminating said fluid stream; and

means interconnecting said terminating means with said protector terminating the streams as the protector moves to said inoperative position.

13. A slitter winder for slitting and winding a web such as paper into a plurality of rolls comprising in combination:

means supplying a traveling web;

guide means for the web guiding it through a slitting zone;

a slitting means in the slitting zone having first and second jets for directing high velocity working fluid streams through the traveling web surface spaced laterally for removing a narrow kerf portion from the web to separate adjacent web strips;

a winder positioned to receive and wind said strips into adjacent rolls;

a protector movable between a first position for barring physical contact with said fluid stream and a second position;

a valve controlling said stream; and

means interconnecting said valve and said protector means operating said valve to terminate the streams at said second position.

14. The method of slitting and winding a web such as paper to form a plurality of adjacent rolls comprising the steps:

supplying a continuous web of material traveling at a high speed guiding the web of material through a slitting zone;

removing a narrow kerf from the traveling web by directing spaced high velocity jets of working fluid against the web at one side thereof and winding the adjacent strips at each side of the kerf;

receiving the fluid of the jets and the narrow kerf removed from the web at the side of the web opposite the high velocity jets in a receptacle means carrying the kerf toward the receptacle means by the fluid streams of the jets.

15. The method of slitting and winding a web such as paper into a plurality of adjacent rolls in accordance with the steps of claim 14:

wherein the separate jets are directed at the web spaced laterally of each other relative to the direction of web travel and the spacing between jets is adjusted for determining the width of the kerf.

16. The method of slitting and winding a web such as paper into a plurality of adjacent rolls in accordance with the steps of claim 14:

wherein the working fluid is water and the kerf and water are retained for being reconstituted to form further web material.