US3446449A - Method of winding printing paper rolls - Google Patents

Description

May 27, 1969 J. L. WAYCHOFF 3,446,449

METHOD OF WINDING PRINTING PAPER ROLLS Filed Jan. 10, 1967 Sheet IN VE N TOR. Jo HN L. W4 YCHOFF BY CAeorHk-esazorums H15 Arum/5Y5 1969 J. 1.. WAYCHOFF 3,446,449

METHOD OF WINDING PRINTING PAPER ROLLS Filed Jan. 10. 1967 Sheet g of 2 INVENTOR.

1 JOHN L. W4 YCHOFF Has/4 rroeue'Ys' Pa., assignee of 7 Claims ABSTRACT OF THE DISCLOSURE The art of winding printing paper rolls to make them uniformly solid throughout the length and depth of the roll comprising the steps of controlling the speed of winding, tightening the paper web flight to the winding roll to place it under tension, engaging the tightened flight by two guide rolls to first divide the flight into three short sections, and second to disseminate the web stresses in changing the angular direction of the next flight section, and lastly to engage the paper flight adjacent the point of tangency to expel the air and smooth out the tightened paper webbing as it forms the roll.

References 1,961,685, Farley, June 5, 1934; 2,617,606, Whatmore, Nov. 11, 1952; 2,794,606, Miller, June 4, 1957.

Background of invention This invention relates and unreeling and more particularly to the reeling of web rolls of printing paper. Newsprint web rolls frequently come from the paper mills loosely wound. This creates trouble particularly when operating the offset news printing machine and the web frequently breaks causing shutdown. The ends of loosely wound Web rolls are uneven which provide lateral movement of the traveling web to the press. Loosely wound web rolls have flat spots particularly adjacent their ends. Since newsprint webbing is initially moist, storage and handling of the web rolls create flat sides and flat spots and eccentric rolls. Such conditions create many problems when operating the press.

Again it has always been undesirable to use newspaper web rolls which will not complete a full edition-run in an offset press because of the blankets. Thus the practice has been to use larger rolls which leaves a goodly number of butt end web rolls that are uneven and have flat spots and are not tight.

The prior art recognizes the presence of defects and irregularities such as eccentric paper rolls, tight and loose sections in the same paper roll. These also occur due to handling and storage of the paper rolls. The art requires rewinding into large rolls on the press with the use of only one guide roll and with no tension on the web flight to the rewind roll. This is ineffective in producing a solid and tightly wound roll.

The prior art also contemplates winding web rolls directly from butt ends in a single Web flight between the butt and the wind roll, some teaching a single short web flight and another teaching a single long web flight and retarding the butt end roll. A single flight without a guide roll has proven to transfer the inaccuracies of one butt end roll to the winding roll and produces a loose or poor roll regardless if the butt end roll has a brake applied thereto to place tension on the single flight.

Summary The principal object of this invention is the method of winding or rewinding web rolls to produce a solid and uniformly tight newsprint web rolls. To obtain a solid generally to the art of reeling 3,445,449 Patented May 27, 1969 tree and uniformly tight web roll, it was discovered that by dividing the taut web flight to the winding roll into three sections by engaging the same with tWo guide rolls a very solid and tight roll resulted. These two guide rolls produce three short sections in the web flight and disseminate the web stresses in changing the angular direction in the traveling web flight section. The two guide rolls change the direction of each flight section and the last flight section to the winding roll produces a hard and tight roll uniformly solid throughout its length. It was discovered that the stresses are removed by the two guide rollers and produce a solid and tight roll whereas a single guide roll merely reverses the stress faults in the rewound roll.

Further improvement in the wound roll may be ob.- tained by the step of ironing the paper flight at or adjacent to the point of tangency of the flight entering the winding roll. This expels the air and smooths out the web on the roll.

After the discovery that two guide rolls dividing a paper flight into three short sections actually disseminated the stresses that caused the inaccuracies in a wound or rewound web roll, the teaching of prior art was checked and found not to produce the improvement of this discovery and invention.

Other objects and advantages appear in the following description and claims.

The accompanying drawings show, for the purpose of exemplification without limiting the invention or the claims thereto, certain practical embodiments illustrating the principles of this invention wherein:

FIG. 1 is a view in side elevation of the web winding machine comprising this invention.

FIG. 2 is a plan view of the machine shown in FIG. 1.

Referring to the drawings, the base 1 of the machine is constructed of two heavy side plates 2 and 3 connected together at the bottom by the base plate 4, the petimetral edges of which have the depending flanges 5, the side flanges of which are secured to the lower portions of the side plates 2 and 3 to form a rigid and integral frame with the upwardly extending side plates in parallel relation. This base or frame 1 is preferably constructed when it is desired to provide an independent machine as a rewinding machine. However, the same structure may be constructed on the supply stand that supports the newsprint web rolls on a printing press. These supply stands for a printing press have similarly spaced parallel plates for supporting the web rolls and may readily be adapted to perform the rewinding of the butt end rolls or rewinding a loosely wound paper roll before it is used on the press. Work of this character may be performed on the press stand when the latteris not in use.

The side plates 2 and 3 of the base or stand 1 are provided with spaced bearing members 6 and maintain the axes 7 and 8 parallel when the butt end roll 10 and the rewind roll 11 are mounted on their respective shafts 12 supported by the bearings 6. The shaft 12 of the rewind roll 11 may become the shaft for the butt end roll 10 in the next operation. The bearings 6 are preferably upwardly open bearings in the top marginal edge of the plates 2 and 3, the plates being notched to receive this shaft 12 and heavy bolts 13 extending through the plates 2 and 3 support rollers mounted with anti-frictional bearings on the bolts 13 and these rollers in turn rotatably support the shaft 12. A hearing cap 14 is hingedly supported at 15 to the plates 2 and 3 for the purpose of carrying the top anti-frictional bearing in the form of a roller 16 that engages the top surface of the shafts 12. This top bearing 16 prevents the roll from rising from the surface of the bearing rollers 6. The bearing caps 14 are locked by the pivoted lock member 17 which when freed by means of a locking cam or screw may be pivoted as at 18 to release the bearing caps 14 and allow them to be thrown out of the way for the purpose of removing and replacing the rolls on the shafts 12. It will be noted that these bearing caps 14 are pivoted to swing outwardly toward the ends of the frame so as to provide a clear bearing for inserting and withdrawing the shafts 12. This is ordinarily performed by an electric hoist having spaced fingers to engage the shafts 12 between the bearings 6 and the collar members 20 that enter and expand in the tubes 21 to secure the tube and the roll thereon to the shaft 12 and which are locked in place by the locking member 22.

The ends of the shaft 12 are preferably provided with an offset or shoulder 23 for the purpose of receiving the hub member 24 that carries the pulley 25 and which is locked thereto by means of a suitable spline or key. If only one of the shafts 12 is employed at all times as the shaft for the winding or rewind roll 11, then the other shafts need not be provided with this shoulder. As soon as the wound roll 11 has been finished and removed from the machine its shaft 12 may be removed and it is not necessary to add a shaft to this roll until it is to be mounted to supply paper to the printing press.

The shafts 12 are preferably made of steel and their surfaces are hardened so that they will provide a wearing surface against the roller bearing 6 and 16. In this manher the axes 7 and '8 of the parallel shaft are maintained in true alignment in a very close tolerance which was found to be neceessary in the art of providing a smooth, tight and solid roll.

At the opposite end of the rolls the shafts 12 may carry a grooved brake wheel as indicated at 26 for receiving a partable brake member 27 which when pivoted may be opened and removed from the brake wheel. The brake member 27 is provided with a tightening member 28 to determine the friction between the annular groove and the brake members, which tightness may be controlled by the rotary adjusting rods 30. Only one brake is shown. However, both shafts 12 are provided with the brake wheels 26.

The side plate 3 is likewise provided with a bracket member 31 that supports an adjusting wheel 32 which in combination with the side plate maintains the axial position of each of the shafts 12. Thus one may gauge the flat ends of the paper rolls 10 and 11 in respect to the adjacent inner surface of the plate 3. Thus it is important to adjust either the butt end paper roll 10 or the winding roll or rewind roll 11 relative to the plate 3 so that the edge of the paper is accurate within a very small fraction of an inch relative to each other. The brake system together with the axial adjustment of the shafts 12 are commonly employed to wind the paper rolls on the press so that the paper flight leaving the roll will enter and pass through the press without deviating laterally.

The pulley wheel 24 is preferably provided with two annular grooves to co-operate with the small pulley wheel 33 on the jackshaft 34 which is secured through the support or clamping plates 35 to the side plate 2. The clamping or securing plates 35 may be provided with some form of adjustment so as to take up the slack in the V- belts 36 that connect the pulleys 25 and 33.

A large pulley 37 is secured to the sleeve 38 with the pulley 33 and forms as a journal for the pulleys 33 and 37 which are integral or otherwise secured to each other, and rotate as a unit. The sleeve 38 is journaled on the jackshaft 34 and is suitably lubricated so that it will readily rotate thereon. This sleeve may have a limited axial movement to compensate for any undue axial movement applied by the webbing entering the rewind roll 11 and this axial movement will relieve any undue lateral stresses transmitted to the motor 40 the shaft 41 of which is provided with .a small pullety 42 for co-operating with the large pulley 37 through the V-belt 43. The small pulley 42 is likewise movable axially on the motor shaft 41.

The motor 40 is preferably pivotally supported on the arms 44 secured by side plate 2 so that there is a controlled threaded adjustment or biased spring member 45 to maintain the Vbelt 43 taut. This motor end drive may be positioned inside of the frame 1 since the members in the speed reduction train through the pulleys 42, 37, 33 and 25 would not interfere with the roll or other parts of the machine. However, it is preferable to have it on the outside for serviceability.

The simple speed reduction through the V-belt pulleys may of course be replaced by a gear reducer splined to the shaft 12 and driven by a variable speed motor. The motor 40 is variable speed so that the speed thereof may be changed as the diameter of the paper roll 11 increases in order to maintain the same surface speed of the flight of paper between the two rolls. On the other hand, a fixed speed motor may be employed. However, as the shaft 12 of the butt end paper roll 10 increases owing to becoming smaller in diameter, it may be necessary to readjust the setting of the brake to prevent the brake from freezing and causing the webbing to break.

As shown in FIG. 1, the butt end paper roll 10 feeds the moving flight section 46 to and around the guide roll 47 and thence the flight section 48 extends from the guide roll 47 to the guide roll 56 and, as illustrated in full lines in FIG. 1, the last flight section 51 terminates in the cylindrical surface of the rewind roll 11. It will be seen that by the use of two guide rolls 47 and 50 the paper flight between the rolls 10 and 11 is divided into three sections: 46, 48 and 51. These sections are relativ ly short. They are too short to permit the paper to flutter or flap or vibrate transversely to any appreciable visible extent. Again the brake 27 which is always applied to some extent on the shaft of the butt end paper roll 10 maintains the flight of the paper webbing between the rolls 10 and 11 at a tautness that is insufficient to stretch or break the web paper but is suflicient to effectively destroy the stresses that are created in the web and are particularly noticeable in the flight section 46 as it leaves the eccentric or loose or flat roll of that found in the butt end paper roll 10. Depending upon the character of stress or the condition of the roll 10, lines will be seen on the flight section 46 and they will be partially straightened or sometimes reversed in the flight section 48 but materially reduced. By the time that the paper webbing passes the guide roll 50 into the third and last flight section 51, the stresses have been disseminated and this last flight section smoothly and tightly adds to the winding roll 11 producing a very tight and uniformly solid roll of web paper from one end to the other and since the axial alignment of the rolls have been adjusted the winding roll 11 will be found to have uniformly smooth ends. This is believed to be caused by not only the initial alignment of the two rolls for the rewind roll received the average of the misalignment of the butt end roll 19 but also in the slight axial movement that occurs in the guide rollers 47 and 50 and the frictional slippage of the web thereover.

As shown more clearly in FIG. 2, the guide rolls 47 and 50 extend beyond both sides of the paper webbing and are supported by anti-frictional bearings that are readily lubricated but permit limited tolerance radially as well as axially of the stationary shafts 52 and 53 for the guide rollers 47 and 50, respectively. These shafts are stationary and are fixed relative to the side plates 2 and 3 by the lock mounting members 54.

The relative position of the shafts 52 and 53 permit the flight section 46 to be from a position substantially parallel to the intermediate flight section 48 when the paper flight is withdrawn from the roll 10 as the latter rotates clockwise in FIG. 1 to a position of less than when the flight section 46 is taken from the butt end roll 10 when the latter is rotated in a counter-clockwise direction as indicated by dotted lines at 46 prime. Thus the butt end roll may be unwound in either direction to permit the inner face of the flight to become the in er face of the rewind roll 11 or to be reversed. In order to change the direction of the rewind roll, it is accomplished by the manner in which its shaft 12 is inserted and clamped to the cylinder tube 21 of the butt end t be rewound or to the poorly wound web roll 10. Thus the winding roll or rewind roll 11 is preferably rotated in the same direction which as shown in FIG. 1 is clockwise. This is preferable in view of the fact that it permits the last step in the production of a solid and tight wound or rewound roll 11.

As more clearly shown in FIG. 2, an ironing roll 55, which is similar in construction to the guide rolls 47 and 50 but is preferably larger in diameter so as to have a greater weight, is suitably rotatably mounted on the shaft 56, which is preferably stationary, by means of anti-frictional bearings that allow the free operation of the roller 55. The ends of the shaft 56 are in turn secured to the parallel arms 57 that are pivotally secured at 58 to the mounting members 60 secured to the inner faces of the side plates 2 and 3. Since the arms 57 are of suflicient width and weight as to provide good pivotal bearings they maintain the ironing roll 55 with its rotary axis parallel with the axes 7 and 8 of the butt end paper roll and the winding rolls 10 and 11. The length of the arms 57 support the shaft 56 of the ironing roll 55 so that the cylindrical face of the latter engages the webbing at substantially the tangential point where the paper flight section 51 enters the winding roll 11. If the point of tangency of the paper flight section 51 is not exactly at the point of tangency of the engagement of the ironing roll 55 the point of tangency of the roller 55 may be on either side of this point where the paper flight section enters the winding roll but is preferably slightly beyond the point of tangency as this ironing roll aids in smoothing out the paper webbing as well as expelling the air from underneath the paper webbing. If the weight of the ironing roll 55 is suflicient to overcome the tension in the webbing section 51, it is best that it either be at the point of tangency or slightly ahead of the point of tangency. However, it does perform its function if these two points of tangency are not congruent.

If the weight of the ironing roll 55 and the arms that pivotally support the same is not suflicient, weights may be added to the arms without interfering with the machine as indicated at 61 in FIG. 2.

Since the pivotal axis of the arms 57 supporting the ironing roller 55 lies above the rotary axis of the guide roll 47 and below and slightly to the right of the shaft 53 of the guide roll 50, the ironing roll 55 may be raised and thrown on its pivotal axis 58 and moved toward the butt end roll 10 until the arms 57 rest against the shaft 53 to support the latter above the machine and out of the way of the winding roll or wound roll 11 so the latter may be raised from its bearing after the cap bearings 14 have been opened. In its raised position as shown in dotted lines, the ironing roller 55 is also out of the way of the roll 10 when the axis is necessary to insert and remove the same or when the paper flight is woven around the guide rolls 47 and 50 and spliced to the rewind roll 11.

The important objects of this invention are carried out by the steps of providing hearings to support the rotary axes of the butt end rolls 10 and the rewind roll 11 in parallel relation. When these two axes are maintained parallel to each other, a very tight and solid rewind roll may be obtained.

In maintaining alignment of these rolls, one may employ the adjusting wheels 32 so that the web flight will track straight as it enters the rewind roll 11. It is preferable to align the rewind roll 11 rather than the butt end roll 10 because of the drive pulley sleeve 38, which is journaled on the jackshift 34, secured to the speed reducing drive pulleys 33 and 37. This assembly is capable of sliding axially on the jackshaft 34 to compensate for the proper axial movement of the rewind roll created by lateral stresses in the flight or axial adjustment of the rewind roll 11. The mere axial movement of the roll 11 causes the pulleys 33 and 37 to realign themselves with the pulleys 25. The pulley 42 also realigns itself with the pulley 37 as it likewise has axial movement on the motor shaft 41.

The web flight guide or stress disseminating rolls 47 and 50 may be as much as six or more inches in diameter. The paper should engage the surface of these rollers for not less than an arcuate extent of 45 angle but preferably or more. This allows for the working of the web paper as it passes around these idling guide rolls to create a redistribution of any stresses in the webbing as it is being reeled from the butt end roll. It has been found that an arcuate surface extended by 45 contact is suflicient for this purpose. An increased arcuate contact with these rolls by the traveling web appears to provide some improvement particularly when the ironing roll 55 is employed at the point of tangency of the last web section 51 as it enters the rewind roll. As shown, gravity is employed to exert pressure on the ironing or pressure roll 55. This roll may be placed in any position and the force due to gravity may be increased by the weight 61 which can be replaced by a spring that forces the roll 55 against the rewind roll 11 adjacent the point of tangency regardless of the position of the rewind rolls assuming that the web continues to the underside of the rewind roll.

I claim:

1. The method of winding a tight and uniformly solid printing paper roll from aligned loose, irregular or butt end paper rolls supported on spaced aligned parallel rotary axes with the web paper flight extending therebetween, comprising the steps of driving the winding roll, threading the web paper flight around at least two parallel rotary surfaces to guide and redirect and divide the web paper flight into at least three sections and to change the direction of the running web paper flight sections relative to each other, disseminating the web stresses by tightening the web paper flight against the parallel rotary surfaces, expelling air from under the last flight section as it enters the winding roll by applying pressure transversely of the web flight to the winding roll at a position adjacent the line of tangency of the last web flight section, and maintaining substantially constant spacing between the position of pressure application and the line of tangency of the last web flight as the diameter of the winding roll increases.

2. The method of claim 1 characterized in that the step of disseminating the web stresses by tightening the web paper flight against the parallel rotary surfaces is through subtended are surface contact of approximately 45.

3. The method of winding a tight and uniformly solid printing paper roll from loose, irregular or butt end paper rolls supported on spaced aligned parallel rotary axes comprising the steps of threading the web paper flight around the surfaces of at least two parallel rotary rolls to guide and redirect and divide the web paper flight into at least three sections and to change the direction of the web paper flight sections relative to each other, gauging the ends of the winding roll and the butt end roll relative to each other to align the same and provide a straight web flight therebetween, rotating the winding roll, maintaining the winding roll and the butt end roll in aligned gauged relation while their rotation is sustained, and disseminating the web stresses against the parlallel rotary surfaces by tightening the web paper flig t.

4. The method of winding a tight and uniformly solid printing paper roll from butt end paper rolls supported on spaced aligned parallel rotary axes comprising the steps of threading the web paper flight around the surfaces of at least two parallel rotary rolls to guide and redirect and divide the web paper flight into at least three sections and to change the direction of the web paper flight sections relative to each other, gauging the ends of the winding roll and the butt end roll relative to each other to align the same and provide a straight web flight therebetween, driving the winding roll, permitting lateral movement in the drive to remove lateral stresses induced by the web paper flight, and disseminating other web stresses against the parallel rotary surfaces by maintaining a tight web paper flight.

5. The method of winding a tight and uniformly solid printing paper roll on a winding roll from loosely wound and irregularly wound and butt end unreeling printing paper rolls, comprising the shteps of (1) supporting the unreeling paper roll and the Winding roll on spaced aligned parallel rotary axes,

(2) threading the Web paper flight around the surfaces of at least two parallel rotating rolls (a) to guide, (b) and redirect, (c) and divide the web paper flight into at least three sections, (d) and to change the direction of the web paper flight sections relative to each other,

(3) gauging the ends of the unreeling roll and the winding roll relative to each other (a) to align the same, (b) and provide a straight web between their parallel rotary axes,

(4) rotating the Winding roll,

(5) maintaining the winding roll and the unreeling roll in aligned gauged relation while their rotation subsists,

(6) and disseminating the web stresses from the unreeling roll by tightening the web paper flight against the surfaces of the parallel rotating rolls.

6. The method of claim 1 characterized by the step of permitting lateral movement in the winding roll drive to remove lateral stresses induced by the web paper flight.

7. The method of claim 3 characterized by the step of weaving the web paper flight between the axes of adjacent parallel rotary guide rolls to reverse the web paper face contacting these adjacent guide rolls.

References Cited UNITED STATES PATENTS 3,317,156 5/1967 Hank 24275.3

LEONARD D. CHRISTIAN, Primary Examiner.

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