US2461246A - Web severing method and apparatus - Google Patents

Description

. A J. T. WEYENBE-RG 2,461,246

WEB SEVERING METHOD AND APPARATUS Filed Aug. 21, 1944 Patented Feb. 8', 1949 WEB SEVERING METHOD AND APPARATUS John Theodore Weyenberg, Kimberly, '15., as-

signor to Paper Patents Company, Neenah, Wis., a corporation of Wisconsin.

Application August 21; 1944." Serial No. 550,354 6 Claims. (Cl. 242-56) This invention relates. to an improvement in a web severing 'method 'and apparatus particularly adapted for use in connection with papermaking-machinery and the like, wherein a web of paper is delivered to reeling mechanism where by the web is rolled into reels of predetermined size.

The invention is particularly concerned with a method and apparatus for severing the web when a reel has been completed and starting the winding of the web on a new reel core.

The main objects of the invention are to profor shifting the core into vide asimple but efficient method and means for severing a web and starting the winding of a web on a new reel core; to provide such an improved method and apparatus which will so sever the web as to materially reduce the excessive waste of web material occasioned by known methods of severing the web and starting the new reel; to, provide an improved method and apparatus for,

the purpose indicated which will be substantially automatic in its operation to thereby eliminate relatively dangerous hand methods of severing webs and starting new reels. I

Other objects and advantages of the invention will be understood by reference to the following specification and accompanying drawing (one sheet), wherein there is more or less diagrammatically illustrated a selected embodiment of the improved method and apparatus.

In the drawing:

Fig. 1 is a diagrammatic perspective illustration showing a normal condition of the improved apgaratus during the reeling of a web of paper, an

Fig. 2 is a diagrammatic perspective corresponding to Fig. 1, but illustrating the apparatus in the course of a web-severing and reel-starting operation.

The improved apparatus herein shown comprises a more or less conventional winding drum I which is suitably rotatably mounted through the agency of shafts such as indicated at 2, which extend from its opposite ends. A paper web 3, which is being delivered from paper-making, calendering, or other paper treating apparatus is directed over said winding drum I, and is wound upon a reel core 4 to form a reel 5 of the paper. Thereelcore "l is, of course, suitably supported so asto maintain the circumference of the reel 5 in engagement with the winding drum I in accordance with more or less common practice. The'details of the supporting means for the windin: drum I, reel core 4, and of the driving mechwound on the pulley l2.

anism for the drum, form no part of this inven-- tion and are, therefore, not illustrated.

While the reel 5 is being formed, another reel core designated 4a is suitably positioned above the paper web 3 and adjacent the winding drum I, suitable means such as indicated at 4b being provided for supporting said extra core 40., and engagement with, the drum at' the proper time. Such means are well known in the art, and are, therefore, not herein illustrated or described. 7

A suitable tape strip 6 has one end secured by a spring clip I or similar friction holding means which may be mounted on any conveniently located part here represented by a stationary post 8. The tape 6 extends from theclip 1 under the paper'web 3 in front of the drum l, and is gripped adjacent the other edge of the paper web 3 by a spring clip 9, or other suitable friction holding device which, like the clip I, is supported by any conveniently located machine part, or by a post such as represented at I0. From the clip 9, the tape extends under the end portion of the extra reel core it; at a point spaced edgewise from the edge, of the sheet 3, then upwardly and over the saidreel core 411 and to a tension means, here represented as an electric motor II; The tape 6 is attached to a pulley or winding drum "of said motor.

When the reel 5 has been built up to the desired size, the extra reel core 4a is moved into engagement with the web 3 and the drum I so as to be thereby rotated. The tape tensioning motor II is energized so as to cause the tape 6 to be Such winding of the tape on the motor duly serves to tension the tape around the extra reel core 4a, the tape being first pulled free from the holding clip 9 so that the tape will then extend directly from the clip I under the reel core 4a and around the same to the tensioning device.

If the motor H and pulley I! are located at floor level somewhat outside of the adjacent edge of the paper web, such contact as may occur between the tape strip and the adjacent web edge during travel of the tape strip along the length of the reel core has no adverse effect on the web. apparently because the tension of the tape is not high enough or because it travels too rapidly. However, if desired, any such possible contact between the web and tape-strip may be avoided by locating the pulley l2 slightly above the plane of the web.

,The frictional engagement thus effected between the tape strip 6 and the rotating reel core 4a causes the tape strip to travel across the length of the reel core la, describing a more orless spiral 3 which is then being wound solely on the reel core la. The completed reel 5 is removed and the reel being formed on the core in may be shifted towards the position of the completed reel, there-' 4 by restoring the apparatus to normal operating condition. Another reel core is then placed in the position of the reel core in, as shown in Fig. 1, and the tape strip is unwound from the tensioning .device and restored to the starting position shown in Fig. l. The tensioning device ii may be mounted on a swivel base so as to permit the pulley I! to maintain an operative relationship to the angular path of the tape during a web-;

severing operation, or other suitable tape guiding means may be provided to permit the motor to remain in a stationary position.

According to prior methods of severing apaper web and starting a new reel, a more or less diagonal line of severance was effected and the winding of a new reel started by effecting gradual winding of the width of the web on a reel. How-. ever, under common circumstances, say, with a machine delivering a web at the rate of 800 feet per minute, an eflicient web-severingand reelstarting operation would require at least .thirty seconds during which a diagonal line of sever ance extending along 400 feet of theweb, would be produced. The diagonally-severed 400 feet of paper represented'wastes since it could not be 4 her to engage said empty core with sufficient frictional force to cause the member to traverse the length of the empty core as an incident to the rotation thereof.

2. 'In web severing and reeling apparatus of the class described, the combination of a winding drum, a reel core on which a web is being wound, an empty reel core, means for supporting said empty core in driving engagement with the paper web, the web being directed. between said empty core and winding drum to said first mentioned reel core, a tape strip. means for suspending a portion of said tape strip transversely under the web being delivered between said core and winding drum, said tape strip being releasably held at one side.of the web and being extended from the releasable holding means and loosely looped around an end portion of said empty reel core in spaced relation to the adjacent edge of theweb, the loop extending under and then over said core from said releasable holding means, said tape strip being adapted to be tensioned so as to free it from said releasable holding means and so as to cause it to be frictionally engaged with said core, whereby rotation of the latter will cause trave1 of the tape strip across the length of said empty reel core to thereby sever the web and effect rolling of the leading end of the severed web on the core.

3. The method of severing a web which is being delivered .to and wound upon a reel, and-of starting the winding of the severed leading end of the web on another reel core, which consists in anstrip around the end portion of such other counted as part of a reel of specified width of paper. The improved arrangement hereindescribed operates with such speed that the eye cannot easily, follow the operation, and not more than a few feet of waste are produced incident to the more or less diagonal cut produced. In the drawing, the angle of the line of severance is, for

successfully employed consists of a strip of mill,

felt about 2" 'wide. However, other tape strips or cords may be employed.

' Other changes in the described method and apparatus may be made while retaining the principles of the invention.

I claim:

1. The method of severing a web which is being delivered to and wound upon a reel and of startin the winding of the severed leading and of the web onan empty reel core, which consists in looping a tape or cord-like member around the empty core adjacent one end thereof, anchoring one end of the member beyond one side of the web to be severed, securing the other end of the reel core adjacent the opposite side of the web. and providing a free endportion of the. strip beyond said end portion of'the core, causing said other reel core to rotate iniweb winding direction .delivered to and wound upon a reel, and of start-- ing the winding. of the. severed leading end of .the web on an empty reel core, which consists in looping a tape or cord-like member around a portion of the empty core beyond one edge of the web, extending the member transversely of the web on the side thereof opposite to the side on which the empty reel core is disposed and anchoring the member adjacent the other edge of the web, the looped portion of said member being initially loosely disposed around said empty core portion so as to permit the latter to rotate within the looped portion of said member, effecting rotation of said empty reel core at web reeling speed, and tightening said looped portion on said core soas to effect frictional driving interengagement between said member and core to cause the member to traverse-the length of the empty core as the class described, the combination of a winding drum, areel core on which a web is being wound, an empty reel core, means for supporting said empty core in driving engagement with the paper web, theweb being directed between said empty core and winding drum to said first-mentioned reel core, a tape strip, means for holding one-end portion of said tape strip adjacent one edge of the web being delivered between said core and winding drum, said tape strip being extended from said holding means transversely of said web on the side thereof opposite to the side on which said empty reel core is disposed and loosely looped around the end portion of said empty reel core in outwardly spaced relation to the other edge of the web, means for releasably supporting said strip adjacent said other web edge and intermediate said holding means and said looped portion of the strip, said tape strip being adapted to be tensioned so as to free it from said releasable supporting means and to close said looped portion on the empty reel core, whereby said tape strip is friction'aily engaged with said core and caused to travel across the length of said core to thereby sever the web and efiect rolling of the leading end of the severed web on the core.

6. In web severing and reeling apparatus of the class described, the combination of a winding drum, a reel core on which a web is being wound, an empty reel core, means for supporting said empty core in driving engagement with the paper web, the web being directed between said empty core and winding drum to said first-mentioned reel core, a tape strip, means for releasably holding one end portion of said tape strip adjacent oneedge or the web being delivered between said core and winding drum, said tape strip being extended from said holding means transversely of said web on the side thereof opposite to the side on which said empty reel core is disposed and loosely looped around the end portion of said empty reel core in outwardly spaced relation to the other edge of .the web, means for releasably supporting said strip adjacent said other 'web edge and intermediate said releasable holding means and said looped portion of the strip, said tape strip being adapted to be tensioned so asto tree it from said releasable supporting means and to close said looped portion on the empty reel core, whereby said tape strip is frictionall'y engaged with said core and caused to travel across the length of said core to thereby severthe web and effect rolling of the leading end of the severed web on the core, the first-mentioned end of said strip being dise'ngageable from said releasable holding means as an incident to the pull applied to said stripbyl said core after the web. severing travel of the. strip is completed, whereby said strip is freed for removal from said web.

JOHN THEODORE WEYENBERG.

rnnraaancns crrnn T The following'ireferences are of 'record in the file Of this patent: I

UNITED STATES PATENTS

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