US1868285A - Winder drive for paper machines - Google Patents

Description

July 19, 1932. D. R. FRANCIS 1,868,285

WINDER DRIVE FOR PAPER MACHINES Filed Jan. 9, 1929 2 Sheets-Sheet 1 INVENTOR. JAN/EL R. Fe /vc/5 A TTORNEYIS July 19, 1932. D. R. FRANCIS 1,868,285

WINDER DRIVE FOR PAPER MACHINES Filed Jan. 9, 1929 2 Sheets-Sheet 2 Q HF.

INVENTOR. JAN/1. R Fe/ /vc/s A TTORNEYS Patented July 19, 1932' unites r PATENT OFFICE,

DANIEL R. FRANCIS, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE WATERBURY TOOL COMPANY, OF XVATERB URY, CONNECTICUT, A CORPORATION OF CONNECTICUT WIN DER DRIVE FOR YAPER MACHINES Application filed January 9, 1929. Serial No. 331,370. r

The invention relates to paper machines and more particularly to the winder drives of that class of such machines in which webs of paper are Wound in the'form of rolls. In

machines of the indicated type the efliciency of the winding means varies at times with the product which is being handled, and chiliculty has been experienced in producing rolls of uniform density and with the desired hard centers, when such variations develop. Furthermore, with many existing types of winder drives it is necessary, when threading-in, to turn the mechanism over by hand in order to avoid a jerking motionwhich results from 5 theuse of a slip belt or from slipping the clutch which causes a jerking motion liable to break the sheet, and dangerous to the operators. To turn the winder by hand is objectionable, as the motionis then produced in a series of steps, while practicehas shown that only a slow uniform'motion will produce the start of a high grade roll. Furthermore, after the roll, has been'started, it is necessary to quickly bring the winder to full speed in order to obtain the maximum ro-e duction. On a given machine, it is desirable tobe able to operate the winder at a number of different speeds so that the speed. at which one sheet may be efficiently handled shall not be limited by a very much weaker sheet made, for instance, on the same paper machine.

The object of the present invention is to provide a. driving means whereby the above objections will be automatically overcome and the desired advantages automatically obtained, and whereby the operator will be given full control'over his machine, both in speeding up and slowing down to a. full stop 40 without the use of a brakeand without'any jerksor sudden variations inthe speed.

The invention contemplates further the provision of a driving means which will facilitate the threading-in process and provide a smooth and uniform-acceleration from the threading-in speed to the running speed with a constant, even tension on the sheet to thereby avoid breakage of the'latter and the delay and Waste resulting therefrom. Other more 6 specific objects will appear from the description hereinafter and the features of'novelt will be pointed out in the claims.

In the accompanying drawings, whichillustrate examples of the invention without defining its limits, Fig.1 is a front elevation of a winding machine embodying the novel driving means; Fi 2 is a diagrammatic sectional elevation; Fig. 8 is a fragmentary view showing another driving arrangement; Fig. 4 is a view similar to Fig. 1 illustrating so still another form of drive, and Fig. 5 is a detail view,partly in section, of the driving means. i a

The winding machine itself may be of any conventional construction and include any of the features generally found in such ma chines, or provided in special forms thereof; the novel drivingmeans is particularly adapted to that type of winding machines which include two drums 10 and 11, suitably journaled in a conventional frame12 in proximity to each other as shown in Fig. 2 to provide a rotating support on which the roll' of paper 13 is adapted to rest. The web of paper 14 may reach the winding machine from any suitable source, as, for instance, a supply roll '15 suitably supported on the frame 12 and passes over a plurality of tension rolls 16 located in the. machine in the usual manner. The required tension on the sheet or web being wound is obtained in any suitable manner as for instance by means of an overhead idler or pressure roll 17 sometimes called the rider roll and resting upon the surface of the roll 13 being wound, asshown inFig.3. i.

The'improved driving means comprises a fluid pressure motor 18, to which fluid under pressure is circulated byinean-s of a variable delivery pump '19. v, The fluid pressure motor 18 and the delivery pump 19.may be constructed as a unit, as shown in Fig; 4, and communicatewith eachother through a suitable valve plate 20, or the delivery pump may be constructed as a separate independent unit and located at a distance from themotor 18, in which case the pump is connected with the motor 18 by means of suitable pipes. The variable delivery pump'19is of the well known type of pumps employed for variable speed 100 gears, and consists of a driving shaft 21 on which is mounted a rotatable'barrel 22, provided with a plurality of cylinders 23 extending in parallel relation to the shaft 21. Each cylinder 23 slidably accommodates a piston 24, which is connected by means of .a

piston rod 25 with a swash plate 26, rotatably mounted in an adjustable tilting box or race 27. The latter and with it the swash plate 26 may be adjusted to different angles of inclination relatively to the driving shaft to vary the strokes of the pistons 24 and therefore the output or the amount of fl-uidd-deliv ered by the pump for each revolution of the.

cylinder barrel 22. The means for adjusting the inclination .of the swash plate will be more fully described hereinafter.

In the examples of he invention illustrated in the drawings, the motor 18 is similar in construction to the pump 19,, excepting that the swash plate 26 and tilting box 257 of said motor arelocated at a fixed angle of inclination with respect to the shaft 21 of said pump 1:9. The pump 19 may be driven in any convenient manner and any suitable means, and the illustrated example has its shaft 21 directly coupled, for

instance, by means of. a flexible coupling 29 with the armature shaft ofan electric motor 3.0. Similarly, thedriving shaft 21301" the motor 18 may be connected with the drum 1 0 and 11 inany conventional way, as by extending the shaft 31 of the roller 10 and supporting said extension in an outboard bearing 32. On the end of the shaft 31 a gear ,33 is mounted in mesh with .a gear 34 fixed upon the shaft 21 of the motor 18. In some cases as shown in Fig. 3, the shaft 21 of the motor 18 may be directly connected with the shaft 31 of the drum 10 and provided with a gear 35 meshing with an idler gear 36 which in turn engages a gear 37 on the shaft of the second winder drum 11 so that both drums aredriven at the same speed and in the same direction. If it is desired to provide a means for driving the drum 11 either at the same or at a different speed from that of the drum 10 to produce a tension on the sheet being wound, the shaft 21*, as shown in Fig. 4, may

" be coupled to the end of a short counter shaft 38 on which are mounted a straight pulley 39 and a tapered. pulley 40. The straight pulley 39 is connected by means of a belt 41 with asimilar pulley 42 mounted on the shaft 31 of the drum 1-0, whilethe tapered pulley is similarly connected by means of a belt 43 with a correspondingly'ta pered, but oppositely arranged pulley 44 lo cated .upon the shaft ofthe drum 11. By shifting the belt 43 on the cone or tapered pulleys. 40 and 44,, the speed of the drum 11 may be slightly varied with respect to the speed of the drum 10 to produce a. tension on the sheet or web 14 as it is being wound on the roll 13.

The means for adjusting the swash plate 26 of the delivery pump 19 may be of any suitable type and as shown consists of a control shaft'45 extending transversely to the shaft 21 and journaled in a suitable bearing 45*, as shown in Figs. 1, 4 and 5. I The control shaft 45 is connected with the swash plate 26 by means of a bearing block 46, slidable in a forked arm comprising an integral part of the tilting box 27 and connected with a stub shaft 47., which in turn is connected with the control shaft 45. In the preferred arrangemerit, the control shaft 45 extends in opposite directions beyond the bearing block 46 and is provided a'tits opposite ends with threaded portions adapted for .screwthreaded engagement with internally threaded nuts 48 r 49 as the case may be, said nuts being suitably held against movement inaxial directions but free to rotate relatively to said control shaft 45. Manually operated means are provided for selectively adjusting the control shaft 45 of the pump, said means 00- operating with either one or the other of the threaded ends of the control shaft 45, de-

operation of the shaft 52, it may be provided '7 with a hand-wheel 54 as shown in Fig. 1..

If foranyreason it is more desirable the arrangement shown in Fig. 4' may be used in which a bevel gear 50*, corresponding to the bevel gear 50, is connected with or forms part of the nut 49. This bevel gear 50 meshes with a bevel gear 51 fixed upon a shaft "52 journaled in suitable bearings 53 and extending transversely across the machine at the bottom thereof as shown in Fig.

4. To facilitate the operation of this arrangement of the manually operated means, the shaft 52 may be provided with a sprocket wheel 55 connected by means of a sprocket chain 56 with a corresponding sprocket wheel 57 secured upon a stub shaft 58 which in such case carries a hand wheel 54" corresponding.

to the hand wheel 54and likewise located within easy reach of the operator; It will be understood that either of the control shafts 52'or 52 may be used in a machine dependent upon existing local conditions, and further, that generally speaking, only one of said shafts with itsco-operating parts is necessary. V When the tilting box 27 and the swash plate 26 are perpendicular to theshaft .21, or, mother words, in the neutral position the pistons 24 have no stroke and consequently no fluid is pumped. Adjustment of the control shaft 45 by means of either of the aforesaid control shafts 52 or .52" to tilt the tilting box 27 and with it the swash plate 26 regulates the strokes of the pistons 24 and causes the output of the pump to be increased or diminished as the angle of inclination of the swash plate 26 increases or decreases with respect to the shaft 21. When the swash plate 26 is inclined in one direction, one of the ports of the valve plate becomes the pressure port, while the other port thereof becomes the suction port, while in the oppositely inclined positions of the swash plate, the pressure and suction ports are reversed, that is to say, the port which previously was the pressure port becomes the suction port, and the previous suction port becomes the pressure port. In operation and assuming that the control shaft 45 of the pump 19 is in its neutral position and that the electric motor 30 is started, the operation of said motor will cause the pump barrel 22 to be rotated, which rotation, however, will operate the pump without causing it to pump any fluid to the fluid motor 18, because of the setting of the control shaft 45 in its neutral position; as a result of this, there will be no rotation of the fluid motor 18. If it be desired to operate the drums 10 and 11 at a verv slow speed, in order to permit the web 14 to be threaded-in, the hand- wheel 54 or 54 is operated to adjust the swash plate 26 to a position in which a small quantity of fluid will be pumped to the fluid motor 18 to thereby cause the latter to rotate slowly, this slow motion being transmitted through the existing connections to the drums 10 and 11. In order to operate the winding machine at the desired running speed, the hand- wheel 54 or 54 is further operated to adjust the swash plate 26' to a greater angle to thereby cause the strokes of the pistons 24 to be increased and the output of said pump 19 to be correspondingly increased, whereby the fluid motor 18 is driven at acorrespondingly greater speed, which is transmitted by the aforesaid C( nnections to the drums 10 and 11. To slow down the speed of operation or to completely stop the operation, the parts are actuated in a reverse direction, as will be readily understood.

With the arrangement set forth, the winder drive provides a threading-in speed which may, ifdesired, be so slow that movement can scarcely be detected and permits adjustment from this latter speed to the maximum or any intermediate speed as slowly or as rapidly as the operator desires and in instant and exact response to any movement of the controlling means. The arrangement avoids the development of any working or jerking motion liable to break the sheet and permits the drive to be adjusted in a manner to handle the web of'paper efliciently, regardless of its tensile strength-whether the same is constant or varies throughout the length of the web.

Furthermore, the acceleration from the threading-in speed or from the position of rest to the running speed, or to any intermediate speed'is smooth and uniform, so that the tensionon the web iswithout variation and the danger of breakage of said web is positively avoided. I t

In addition to the above, the novel drive for the windingmeansmakes it possible to tightly wind the web,commencing with the first wrap of the paperaround the winding shaft, which tightness can be definitely and efficiently maintained up to the maximum diameter of the roll. The resulting rolls are consequently hard centered and of uniform density,which conditionscan be varied to suit the different varieties of paper being handled. L

' It has long been recognized that the oroblem of'windingpaper is one of tension.

- ith the arrangement setforth herein,"the tension may beapplied to theweb gradual- 1y, with the result that the strain on the web is lessened and injuryto said web is reduced to a minimum. Furthermore, the driving means set :forthherein permit the two drum principle of winding paper tobe used efii ciently and #the utmost advantages thereof to be enjoyed. It is possible to operate the rear winding drum 11 at the same speed or at a" slightly higher speed than the front drum 10, which travels at the same speed as the Web, so that said web is automatically placed under a tension which materially improves the rolling thereof. The windingymea ns is adapted for efficient use with all types of winding machines and may be adequately used in machines which include cuttin devices for splitting the webs into individual strips.

Various changes in the specific forms shown and described may be made'within the scope of the claims without departing from the spirit of the invention.

I claim:

1. The combination with a winder of a paper machine of the type wherein the roll of paper being wound is supported upon the periphery of a pair of winder rolls, of means for driving said winding rolls, for varying the speed thereof without interrupting breaks from zero-to a predetermined'maximum speed and for varying the speed of one of said win ding rolls relatively to the other to cause a tension to be exerted for winding the paper roll into a hard center roll, said means comprising a fluid pressure actuated motor, a fluid pressure actuated pump for circulating fluid under pressureto said motor and power means for driving said pump, a driving condriving connection of variable effect between I 7 said motor and the other of said winder rolls.

2.- The Combination with awinder of a paper machine of the type wherein the roll of. paper being wound is supported u on the periphery of a pair of winder rolls, 0 means for driving said winding rolls, for varying the speed thereof without interrupting breaks from zero to a predetermined maximum speed and for varying the speed of one of said winder rolls relatively to the other to cause a tension to be exerted forzwinding the paper roll into a hard center roll, said means comprising a fluid pressure actuated motor, a

M fluid pressure actuated pump for circulating fluid under pressure to said motor and power means for driving said pump, a driving connection of invariable efi'ect between said 7 motor and one of said winder rolls, a drivin connection of variable effect between sai motor and the other of said winder rolls, said pump being provided with a control shaft v for infinitely varying the amount of fluid circulated bysaid pump from zero to a predetermined maximum and thereby producing a corresponding variation in the speed of said motor, a manually operable controlhandle located adjacent to said winding rolls and connections from said control handle tosaid control shaft of said pump.

DANIELE. makers.

Images