US1833580A - Slitting and winding apparatus - Google Patents

Description

1931- A. J. JONES ET AL SLITTING AND WINDING APPARATUS Filed June 28, 1928 2 Sheets-Sheet 1 NOV. 24, 1931. A, JONES ET L SLITTING AND WINDING APPARATUS Filed June 28, 1928 2 Sheets-Sheet 2 Fig.5.

Patented Nov. 24, 1931 UN T os TEs PATENT OFFICE ALFRED J MES JONES; or BRISTOL, AND FREDERICK NICHOLAS, or LAWRENCE WESTON, ENGLAND, ASSIGNORS r n. s. a A, ROBINSON, LIMITED, or BRISTOL,

ENGLAND snI'rrING AND WINDING APPARATUS Application filed'J'une 28, 1928, Serial NO. 288,898, andin Great Britain September 10, 1927.

This invention relates to improvements concerned with the cutting or slitting of paper webs and the re-reeling thereof, of the type whereinsteelcutters or slitting discs are 3 adapted to co-operate with a hardened steel or like backing roller Or cylinder. 'While the invention may be applied generally to slitting or the subdivision of paper andthe like, as for examplepaperdelivered by-paper coating or printing machines 'or webs proceeding from paper-making 'machines and the like, it is particularlytsuitable for use as an adjunct or attachment to 'ma chines wherein a continuousweb is subjected in transitito a treatment such as a glazingor waxing process as known in the art' concerned with the production of bread wrapping papeif.

An object of the present invention is to provide improvements whereby a tighter and more uniform roll or reel of paper or the like is obtained.

A further object of the manta, lies in providing means whereby difficulties of alignment-in reeling or re-reeli-ng are overcome or reduced.

It will be appreciated thatwhere paper,

(such as waxed paper) intended for use in connection with foodstuffs, is concerned, any

' means which avoid or minimize handling or exposure, conduce to hygienic conditions. Thus the present invention, as applied as an adjunct to a waxed paper treating machine, possesses advantagesin that intermediate rereeling of the paper and consequent additional handling and exposures are avoided According to the invention as applied in I association with the slitting orsubdivision half the circumference of said roller from its point of contact with the reel. The slitting discs and pressure or backing roller are mounted upon a pivoted or displaceable frame adapted to be variably weighted or arranged as a spring counterbalance so that the pressure upon the reel may be maintained uniform irrespective of the growth of the tional details of the latter.

In carrying the invention into effect according to one convenient mode, a rc-reeling spindleor core 9 is mounted to rotate in bearings 14 carried by brackets fixed to a supporting structure such as 7. This spindle 9 is adapted to be driven from an appropriate transmission element through a strong friction clutch 10 (Figure 3) which is adapted to drive the reeling spindle continuously but allowing slip when the tension of such reeling affords a certain resistance.

Referring to Figure 3, which shows a preferable mounting for the re-reeling spindle 9, the drive to the clutch 10 may be through a belt or any other suitable gearing. The clutch drives the re-reeling spindle through the gears 12 and 13, the latter being permanently fixed to the spindle. The spindle may be readily removed from position by opening the hinged cap bearings 14,.

. It is to be observed that the friction clutch is necessary or desirable where the splitting attachment is used in conjunction with any machine where the paper speed is constant. On the other hand, where the speed of the paper may increase as the rewoun-d reel grows, the re-reeling spindle may be definitely driven, the friction clutch being unnecessary.

The spindle 9 is formed as a centre bar having a number of taper portions 15. Engaging the taper portions are wedges 1 fixed to the inner walls of a tube 17 that is divided longitudinally into, say, three parts. A nut 18 mounted upon a screwed part of the spindle 9 serves to cause relative longitudinal movement between the spindle and the three part tube, whereby the latter is expanded to grip strawboard spools 19 on which the paper web is rewound. The nut is provided with a recess 20 to receive one endof the three part tube, thejother end being'accommodated in a recessed collar 21 thrustraces may be provided between the collars 24 and 26 and the respective bearings. V 1

In association with the re-reeling spindle 9 a frame 30 is provided which is adapted to carry a hard backing roller 31 (which is also intended to be employed as a pressure roller for the reels) and the slitting discs 32. This frameis pivotally mounted upon a, transverse spindle or in trunnions 33 solthat it may have a swinging movement relative to the reeling spindle 9. The pivot for the frame is preferably disposed in a plane below the axis of the re-reeling spindle and the frame is preferably extended away from the spindle position for the purpose of affording a counterweight lever, the arrange ment being such that the addition'of counterweights is adapted to cause the opposite end of the frame to bear towards the rereeling spindle. At its forward end the frame carries the hardened steel roller 31 (or a plurality thereof) mounted in ball bearings sothat such is (or are) free to rotate. This roller31 is preferably disposed so that it lies more or less beneath the reel spindle 9 and is adapted to contact with the paper of the reels as such are formed. The

frame 30 is also adapted to support the cutter orfslitting discs 32 which, may be mounted upon'spindles 34 carried in bearings or located in slots 35 in pivoted arms 36' supported in slotted brackets 37 which in turn are rigidly connected to the cross shaft 38 carried in brackets 39bolted to the frame 3O. A pair of leaf or other spring members 40 is adapted to bear upon thearms 36 carrying the cutter spindle so that the ing the pressure of said springs, the arrangement preferably being such that the pressure of the springs is applied to a point beyond the pivotal point of the brackets carried by the frame so that the spring pressure holds the cutter discs up to their work while they may be readily removed by turning the brackets about their pivot.

To facilitate the raising of the cutter discs 32 or the displacement thereof away from the backing roller, 30, a handle 42 is rigidly connected to the cross shaft 38 and carries a pawl 43 adaptedto engage in the notches 44, 45 in a quadrant 46 forming an extension of one of the brackets 39; I

When the discs 32 are in the operative po- Vsition'the pawl 43 engages in the notch 44,

but when in the inoperative position it engages'in the notch 45.

Inassociation with he pivoted counterbalanced frame30 means may be provided in the form of pawls or catches 47 cooperating with a bar 48 on the frame so that when the frame is swung down to move the backing roller and'cutting discs away from their operat ve position for removal of the re-reeled web, the frame may e temporarily held out of position by the'catches.

7 The paper v web 49 is passed under and.

around the backing and pressure roller 31 and then over the reeling spindle 9in' a direction counter to that in which'it is passed around the pressure roller. The arrangement of the pivoted frame 30 and the cutter discs 32 is such thatthe cutter discs contact with f the backing roller and slit'the paper at a point in close proximity to the re-reeling point of contact where the hardened pressure roller bears against the reels. The distance of theslitting contact point from the pressure reel contact point should be less than the semicircular extent of the backing and pressure rollers and it may be very considerably less, for example it may be slightly under a quarter of a circle. The virtue of effecting the slitting operation in close proximity to the re-reeling point lies in the fact that this arrangement eliminates any difliculties which might otherwise be experienced in the maintenance of alignment in w the -re-reeling operation and avoids interlocking of the reels and the necessity of manipulation or adjustments with regard to theproper tracking of the web. It will be noted that with the arrangement shown, after the web is slit, the portions of the web remain in contact with the pressure roller until they are rewound. I

The counterpoise of the frame whether it be effected by the addition of weightsor by the employment'of a spring balance device, may be adjusted so that the correct pressure is broughtto bear on the paper-as it is rewound in order to afi'ord the requisite tension to cause the reel tightly to be formed.

Moreover, it will be observed that by the arrangement described this pressure and tension is maintained substantially constant and does not vary as the reel grows in size. By the adjustment of the clutch and weights or spring devices the tension of re-reeling may be varied to suit the weight or kind of paper being slit and reeled.

The slitter discs 32 are of known character and together with their supporting brackets are mounted adjustably on the cross shaft 38 so that their lateral position may be spaced according to the desired subdivision of the parent web.

Having now described our invention, what we claim as new and desire to secure by Letters Patent is 1. Apparatus for slitting a web of paper or the like and re-reeling the divided web comprising a re-reeling spindle, fixed bearings in which said spindle rotates, means for directly driving said spindle, a backing I roller around which the web is passed, one

or more disc slitting knives co-operating with said backing roller and a counter-weighted displaceable frame carrying the backing roller and slitting knives, the arrangement being such that the backing roller is pressed against the growing rewound' reel with a substantially constant pressure.

2. Apparatus as claimed in claim 1 and wherein the counterweighted displaceable frame is pivotally ,mounted and is adapted to be variably weighted for maintaining pressure on the growing reel.

3. Apparatus for slitting a web of paper or the like and re-reeling the divided Web comprising, a supporting structure, a re-reel ing spindle, bearings for said spindle fixed relatively to said supporting structure, means for directly driving said spindle, a backing roller around which the web is passed, a plurality of disc slitting knives co-operating with said backing roller, a counterweighted frame pivotally mounted in bearings carried by said supporting struc ture, said frame carrying the backing roller and slitting knives and causing the backing roller to be pressed against the growing rewound reel with substantially constant pressure, and a catch pivotallymounted on said structure and adapted to engage a part of said frame temporarily to hold the backing roller away from the rewound reel for removal thereof.

In testimony whereof we have signed our names to this specification.

ALFRED JAMES JONES. FREDERICK NICHOLAS.

Images