US2498224A - Paper winding machine - Google Patents

Description

Feb. 21, 1950 w. E. STONE PAPER wmome momma Filed Aug. 3, 1946 3 Sheets-Sheet 1 l e m l I i i I i k 7 I .4 i Q 2 INVENTOR WILLIAM ERNEST STONE BYW ATTORNEY v Feb. 21, 1950 w. E. STONE PAPER WINDING MACHINE r 3 Sheets-Sheet 2 Filed Aug. 3, 1946 v INVENTOR WILLIAM ERNEST STONE E. N R Y O T T A Feb. 21, 1950 E. 2,498,224

PAPER WINDING MACHINE Filed Aug. 3, 1946 3 Sheets-Sheet 3 I 4- :5 5 4H 51/45 I I 42 48 Valve sai Pump

INVENTOR /g X///// WlLLIAM ERNEST 5TONE v 5 BYCzZ 47/ ATTORNEY- Patented Feb. 21, 1950 UNITED STATES PATENT OFFICE PAPER WINDING MACHINE William Ernest Stone, Shrewsbury, Mast, as-

sirnor to Rice Barton Corporation, Worcester, Mass., at corporation of Massachusetts Application August 3, 1946, Serial No. 688,258

4 Claims.

paper web is wound on an empty winding roll which is supported in a position herein called 1% initial position, in such a manner that the roll engages the under driving drum to the end that the latter element will drive the winding roll. The end portion of the web will begin to wind on said roll and as soon as the web has become firmly fixed to the roll by the winding action, the roll is moved into a secondary position where it remains until the roll has become filled, such move ment into this'secondary position enabling an empty winding roll to be brought into the primary.

or initial position.

As soon as the roll which is in the secondary position has become filled, the web is severed and quickly transferred to the new empty winding roll, thus to permit the filled winding roll to be removed without stopping the winding of the paper web.

The present machine utilizes two separate supporting frames which are movable with respect to each other thereby to admit of transference of a roll from one to the other frame, from the initial to secondary or running position.

However, it has been found that the above described mechanism has a serious fault in that the paper web may be eitherwound too tightly or even sometimes damaged when being wound on a roll supported in the secondary position. This fault is due to the fact that as the paper actempts have resulted in a'simple and eflective answer to the problem. It is, therefore, an object of the present invention to provide a paper winding machine with means whereby the nippressure between a winding roll and a driving drum may be adjusted.

It is a further object of the present invention to provide a means whereby the nip-pressure of the present type of machine will b maintained substantially constant as the paper is accumulated upon the winding roll.

With the above and other objects in view as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of apreferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art. J In the accompanying drawings:

Fig. 1 represents a top plan view of a reel winding machine. I

Fig. 2 is a side elevation of Fig. 1 takensubstantially along line 2--2 of Fig. 1 and showing the paper drum in its initial winding position.

Fig. 3 is also taken along line .22 of Fig. 1 and shows the paper winding roll in its secondary position. i

Fig. 4 is substantially the same as Fig. 3 but illustrating a full paper roll.

cumulates on the roll the weight of the roll will increase thus. causing the nip-pressure existing between the winding roll and the winder driving drum to become very great. When the nippressure becomes too great-the tension in the paper web will become so high as to cause the I roll to be wound too tightly or else it will be found that the surface finish of the paper will be damaged.

In the past attempts have been made to overcome these shortcomings in the above describedwinding mechanism, but none of these prior at- Fig. .5 is an enlarged side view, partly in section, of the elements comprising the present invention.

Fig. 6 is a view, partly in section,- of the hydraulic' cylinder elements taken substantially along line 6-6 of Fig. 1.

Fig. 7 is a top plan view of one of the hydraulic cylinder mounting plates.

Referring particularly to Figs. 1 and 2, the present invention is incorporated in a winding machine which comprises the side frame members H1 and I i between which is mounted a driving shaft I2 carrying the usual driving drum I3. This driving drum it. maybe driven by a motor It or other suitable driving means connected with the shaft l2. Mounted adjacent each end of the driving drum I3 is one of a pair of quadrant arms l5 and it each of which is mounted upon a respective shaft 11 and I8 which are in turn each journaled in a respectiv one of the 1 journal box 20 has rotatably mounted therein one end of a shaft 2| upon which is mounted the usual paper winding roll 22. As is usual with this type of mechanism, th journal boxes 28 are adapted for vertical movement within the yokes 9, l9 to the end that the paper roll 22 may be readily inserted therein.

The lower end of the quadrant arms l and I6 each.are provided with a segment gear 23 each of which meshes with a pinion 24 carried by a shaft 25 journaled in the side frame members Ill and H, the shaft 25 being connected to a hand wheel 26 by means of a gear reduction train located in member ID all in the usual manner. Thus, an operatorby turning the handle 26 may readily swing the quadrant arms l5 and I6 about their axes l1 and |8 thereby to swing the-roll 22 about the driving drum l3. Figs. 1 and 2 illustrate the quadrant arms l5 and IS in their initial positions as resting against stationary stop members 21, 21 which are carried by the frame members l0 and Also journaled in the opposite frame members I0 and H is a shaft 28 upon which are rigidly mounted a pair of arms 29, 29 the tops'of which has pivotally secured thereto a piston rod 88 by means of a suitable pin 31. This piston rod 36 extends downwardly to be received within a hy-' draulic cylinder 38 which snugly embraces a piston head provided on the rod 36. (See Fig. 6.) Each of the cylinders 38, 38 is mounted in a cylinder mounting frame 40 which comprises a base plate 4| secured by means of bolts 42 to a machine base 43. Extending upwardly from the plate 4| are a pair of spaced plates 44 and 45 between which is pivotally mounted the cylinder 38 by means of a pair of cross pins 48 and 41. As may be noted in Figs. 6 and 7, each of the 52 and 52'. A single valve. 53 controls the fluidto the end that a single'movement of the valve handle 53 may be effective to exert a pressure on each of the piston heads 39 upwardly within are provided with yokes 3|! of a design similar to that of yoke |9. It is the function of the arms 29, 29 to receive the paper roll 22 whenever the quadrant arms l5 and i6 are swung in a counter clockwise direction thus to transfer the journal boxes 29, 20 into the yokes 38, 30.

In the use of the above described mechanism a web of paper 3| is delivered from the driers, calenders, or other parts of a paper making machine, none of which is herein shown, thus, to be wound around the winding roll 22 that'is journaled loosely and removablyin the upper end of the quadrant arms I5 and IE1 The peripheral contact between the driving drum l3 and the winding roll 22 is such as to drive the roll 22 in a clockwise direction thereby to wind the 'web or paper sheet thereon, the roll 22 being held in engagement with the drum |3 during the winding process by its weight. After a predetermined amount of paper is accumulated on the roll 22, the quadrant arms may be swung in a counterclockwise direction thereby to transfer the roll 22 from its initial position, as shown in Fig. 2, to a secondary position within the arms 29, 29 as shown in Fig. 3. The roll in this secondary position continues to accumulate paper until a desired amount is reeled thereon. During the time that the paper is being wound upon the roll or reel 22 in this secondary position, the weight thereof increases in proportion to the amount of paper accumulated. In some instances this weight of paper plus the weight imparted by the arms 29, 29 becomes so great that the paper may be damaged or else wound too tightly on the reel 22. As was noted hereinabove, it is the principal object of the present invention to provide means whereby this pressure may be relieved. Referring particularly to Figs. 2 and 5, 'each of the arms '29, 29 is provided with a bearing sector member 32 which is pivotally secured as at 33 upon the lower portion of they arm 29, and which is adapted to be positioned about the shaft 28 and to be secured to the end of the arm 29 by means of a bolt 34. Depending from thisbearing sector 32 is a plate or crank member which the cylinders 38, 38. By moving the valve in the opposite direction the hydraulic pressure is thereby relieved to the end that the piston heads 39, 39 may move freely within the cylinders 38, 38 under the influenceof the mechanism connected therewith. Each of the plates 4|, 4| is provided with elongated apertures 54 for the purpose of receiving the bolts 42 and by virtue of the elongation of these apertures 54 each of the plates 4| may be adjustably mounted upon the machine base 43 in a manner such that they may be shifted longitudinally of the base 43. Referring toFigs. 5 and '7, the machine base is provided with a pair of angle blocks 55, 55 each of which receives an adjusting bolt,56, the end portion of which is adapted to bear against a respective one of a pair of upright members 51, 51 provided on the plates 4|, 4|. By loosening the bolts 56, 58 and shifting them in anappropriate manner; each of the plates 4|, 4| may be shifted as herein above described. Referring to Fig. 3, it is to be noted that when the winding roll 23' is in its secondary position the piston rod 31 is disposed substantially in a vertical line, which line intersects the axis of the shaft 28. Fluid pressure within the cylinders 38, 38, if applied at this time, would be ineffective to alter the pressure existing between the rolls 22 and I3. However, as the paper accumulates upon the roll 22, the

5 center of the roll will move away from the driving drum l3 until a condition exists such as illustrated in Fig. 4. As pointed out hereinabove, the

weight of the roll 22 increases proportionately to the amount of paper accumulated thereon and,

therefore, the further the center of the roll 22 also turn about the axis of shaft 28 to thewend that the cylinders 38, 38 are pivoted about their ing torque upon the arms 29, 29 in a counterrespective axes. Thus, it is to be understood that any hydraulic pressure existing against the piston heads 39, 39 will be effective to produce a turnclockwise direction, thereby to relieve the pressurebetween the roll 22 and the drum l3. It is.

to be understood, that the further the arms 29, 29

turn about the axis of shaft 28 the greater will 16 be the mechanical advantages oftha pistons 33, 36 Therefore, the greater the weight of the roll 22 the greater will be the effective pressure that the pistons 36, 36 can bring to bear upon the arms 29, 29. The present invention contemplates the use of a constant pressure within the cylinders 38, 38 throughout the entire winding cycle.

Whenever the valve is opened, a constant head or pressure of fluid will be exerted upon the piston heads 39, 39 and this pressure may be so selected that the so-called nip-pressure existing between the roll 22 and the driving drum l3 may be substantially constant throughout the entire winding operation. In other words, as soon as the roll 22 is transferred from the quadrant arms I! and It to the arms 29, 29 the valve 5| may be opened thus permitting the hydraulic pressure to be exerted against the piston heads 39, 39. However, in the position shown in Fig. 3, this pressure will not be effective to add or detract from the normal pressure existing between the rolls 22 and I3 due to the fact that the pistons 36, 35 are in this position disposed directly in line with the shaft axis 28. As the arms 29, 29 swing outwardly, the constant pressure exerted upon the piston heads 39, 39 will become increasingly eflective to force the arms 29, 29 away from the drum l3 to the end that the increased weight of the roll 22 will be proportionately compensated for.

The present invention also contemplates that the pistons 35, 36 may be used to increase the nippressure existing between the roll 22 and the drum i3 at their initial winding stages. In order to increase this nip-pressure the mounting plates 4|, 4| may be moved out to the right-hand end of the frame members I and II thereby to produce a clockwise turning torque upon the arms 29, 29. However, as the arms 29, 29 swing in a counterclockwise direction, this positive addition of pressure upon the roll 22 and the drum I 3 will be entirely eliminated and upon further movement of the arms 29, 29 the pistons 3'6, 39 will be effective to produce a counterclockwise torque upon the arms 29, 29 as hereinabove described. The bearing plates II, II are only adjusted in this manner in the event that the normal weight of the roll 22 and the arms 29, 29 is not suflicient to produce a proper amount of nip-pressure between the roll 22 and the drum l3.

From the above it is to be understood that each of the plate or crank members 35 functions as a force-compounding means which, when rotated in a counterclockwise direction, is eifective to multiply the constant piston force to the end that the arms 29, 29 are biased away from the drum I 3 with a force substantially proportional to the angular distance moved by said arms. Each of the cranks 35 forms in conjunction with its respective piston 36, a toggle mechanism which, when it is in its straight-line position as shown in Fig. 5 is ineflective to bias the arms 29, 29 in any direction as the resultant force of the piston passes directly through the pivotal axes of the arms 29, 29.

Therefore, from the above description it is to be understood that the present invention provides a means whereby thenip-pressure may be maintained substantially constant throughout the entire winding operation. Thus, by selecting a proper hydraulic fluid pressure and by selecting a proper position for the cylinder pivots, the paper may be wound upon the winding r011 without being damaged or being wound too tightly.

I claim:

1. In a paper winding machine having a driving drum, a pair of arms pivotally supported adia cent said driving drum, a paper winding roll carried by said arms and disposed in surface contact with said driving drum for being driven thereby and for winding paper upon said winding roll, toggle means having one link thereof connected to and movable in unison with and about the axis of said arms while its other link is pivotally connected to a normally stationary means, and means to apply a force against said toggle means at all times, said toggle means and said last mentioned means being so positioned that when said winding roll is empty the resultant of said force passes directly through and at right angles to the pivotal axis of said arms. and said toggle means being adapted, in response to an angular movement of said arms, to bias said arms away from said driving drumwith a force substantially proportional to the angular distance moved by said arms.

2. In a paper winding machine having a driving drum, a pair of arms pivotally supported adjacent said driving drum, 9. paper winding roll carried by said arms and disposed in surface contact with said driving drum so as to be driven thereby; the improvement which consists in the provision of means for controlling automatically the pressure between the driving drum and said winding roll, saidmeans comprising, a hydraulically actuated piston for biasing said winding roll away from said drving drum, and crank means connecting said arms with said piston in the manner of a toggle mechanism so that said piston is ineffective to bias said winding roll away from said driving drum when said winding roll is in a predetermined position and so that said piston is effective, in response to an angular movement of said arms, to bias said arms away from said driving drum with a force substantially proportional to the angular distance moved by said arms.

3. In a paper winding machine having a driving drum, a pair of arms pivotally supported adjacent said driving drum, a paper winding roll carried by said arms and disposed in surface contact with said driving drum so as to be driven thereby; the improvement which consists in the provision of means for controlling automatically the pressure between the driving drum and said winding roll, said means comprising, a piston pivotally supported about an axis disposed in parallelism with the pivotal axis of said arms and at right angles to the path of piston movement, a crank pivotally connected with said piston andrigidly connected with said arms, and means to bias said piston toward said crank, said crank and said piston forming a toggle mechanism effective to bias said winding roll either toward or away from said driving drum depending upon the position of said arms relative to said driving drum, and said toggle mechanism being ineiIective to bias said arms in either direction when said toggle mechanism is in a straight line position.

. 4. In a paper winding machine having a driving drum, a pair of arms pivotally supported adjacent said driving drum, a paper winding roll carried by said arms and disposed in surface contact with said driving drum so as to be driven thereby: the improvement which consists in the provision of means for controlling automatically the pressure between the driving drum and said winding roll, said means comprising, a piston pivotally supported about an axis disposed in parallelism with the pivotal axis of said arms 7 and at right angles to the path of piston movement, a crank pivotally connected with said piston and rigidly connected with said arms, and

axis of said arms, and said toggle mechanism 10 being adapted, in response to an angular movement of said arms, to bias said arms away from said driving drum with a force substantially proportional to the angular distance moved by said WILLIAM ERNEST STONE.

REFERENCES CITE) The following references are of record in the tile of this patent:

5 mm'nn STATES PATENTS Number Number Name Date Tucker Feb. 25, 1879 Dulin May 28, 1908 Richardson Apr. 2, 1940 FOREIGN PATENTS Country Date France Mar. 8, 1911

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