US2248014A - Tension regulator - Google Patents

Description

July l, 1941. O. C, ROESEN l 2,248,014

TENSION REGULATOR 23 @dem July 1, 1941. o, ROESEN 2,248,014

TENSION REGULATOR Filed Jan. 2l, 1939 6 Sheets-Sheet 2 July 1, 1941.

O. C. ROESENy TENSION REGULATOR Filed Jan, 21, 1939 6 Sheets-Sheet 3 July l, 1941. o. c. RoEsl-:N

TENSION REGULATOR Filed. Jan. 21, 1939 6 Sheets-Sheet 4 27902756491 car. Paese July 1, 1941 A k@.QRQESEN 2,248,014

TENS ION REGULATOR Filed Jan. 21, 1939 e sheets-sheet 5 Jyuly 1, 1941. Q Q ROESEN '2,248,014

v TENSION REGULATOR Filed Jan. 21, 1939 6 Sheets-Sheet 6 l J4 46- 4.7- 4I Syvum/vbo@ 05 C07* C. oese/,

Patented July 1, 1941 UNir-En, .STAT gg PATENT OFFIC TENS-ION REGULATOR GscariC. Roesen, Searsdale, N. Y., assigner to Machinery Corporation, Plainfield, iN. J., a.corporation of Virginia Application Januaryy k21, 1939, serial No. .252,093

8 Claims; (C1.Y 24a- 7.15)

Wood Newspaper This invention ldeals particularly with a device to .be 4used for controlling Vthe tension ona web roll which is being Vfed into a machine, such as a printing press.

The chief objects-*of this invention are to ;provide substantially frictionless means bearing against the surface of unwinding rollssupported ina rotatable `reel adapted to carry `a plurality of rolls, with means for regulating the tension in the web .from the running roll, .said means being applied AEto the spindle of the running roll; to provide means for applying .brakes -to -th-espindles of the rolls with automatic means for connecting them with, and -disconnecting them from, a source of power .according to the .angular location of the reel; .to provide means for speeding up a fresh roll and splicing it to the running web; and .to provide .certain improvements inY .the mechanism shown in United -States .latentf No. 1,353,401. l

This is vparticular-ly useful in the printing -of magazines where highly rcalendered webs lor webs carrying a very sensitive surface are used. l

Other objects fand .advantages 'of the invention will appear hereinafter. f

Reference is lto :be had to the drawings, in which Fig. 1 shows an .end view of this arrangement including a speeding up and pastingv device yfor splicing web rolls .at .f-ull speed of theipress; Y

Fig. 2 is a section of the irictional 'non-rubbing regulatorl mechanism, vtaken on the line 2- 2 of F-ig.1; j

Fig. 3 -is a sectional -View of -a part of the-brush arm, on the -l-i-ne 3-3 4of Fig. 1;

.F-ig. 4 is a Isectional View 'showing the pulleys mounted Aon .the brush arm shaft, on the line 4!! ofF-ig.1;

Fig. 5 is a sectional view of the pulley tightening arrangement -on the line 5-5 of Fig. l1:; i

Fig. 6 isa view similar to Fig. 1 -on enlarged scale, but showing the zbrakeoperating arrangement;

Fig. 7 shows an `end view-of a modified arrangement where small rollers are mounted directly in the controlling strap;

Fig. 8 isa detailed View showing how the straps are attached to the iioor, lookingl in the direction of the arrow 8 in Fig. 7; A

Fig. 9 is an enlarged sectional view ofthe rol'lers, von the line 9 9 kof Fig. '7;`

Fig. 10 is a sectional view on the line Iii-ii) of Fig. "7 showing the attachment of the straps to the automatic regulator shaft;

accompanying Fig. 11 is a vsectional view `on the line .Ii-II of Fig. .7, showing the straps passing over the brusharmshaft; i

Fig. -12 Vis .an end view showing still., another modication where a bracket having .a small moving belt isfcarried in a stationary strap;

Fig. 13 is a sectional view oflthe tightener in the small strap,.on the line I3`I3 of Fig.'12 v y Fig.y 14 is a sectional View, showingpthe idler serving this small strap and the rollersffor .bringf ing it into service against the paper roll.on t he line ,i4-I4 of` Fig. 12; and Figa-15 isa View illustrating diagrammatically thecontrol of the regulator. v .I

Referring now to Fig. 1, the paper feedand pasting mechanismis set up .adjacent to a press frame 3 carrying a conventional form .of automatic regulator Il. The conventional typeV of pedestal I8, carrying fresh roll I6 and spare roll IB, s'used for supporting a shaft carryingv spiders I1 in which are Arotatably mounted a plurality oi web rolls. In. the particular view shown, a roll ,2 is the active one lin use,fthe web being `led tothe press .orsimilar machine. Bearing against 'the roll,2 is afriction tape or belt I, whichis'trained over a series of idlers, including pulleys 3.3.34 35, 35.3.22 and 2?. This friction device prefer-l ably is in the form of two ybelts capable of running with the rotation of Athe roll, 2. As shown 'particularly in Fig.4 2, pulleys 34 andj35 arernounted cured to anoscillatable shaftg. The shaft avis carried in suitable ball bearings andfis connected to a s tub shaft I2 byapin I3. Mounted on the stub shaft AI2 is an oscillatable sector II, meshing with and driving a pinion I0, carried' on the shaft Il I of the automatic regulator ,4. Thusyit is evident that any turning motion of the shaft 8, caused by thebelt I, will cause a corresponding stepped-um or steppedfdown, movementoi" the automatic regulator shaft. This automaticregulator is constructed in a similar manner to that shown in Patent No. 1,353,401. The press pulls the web 28, rotating the roll 2 and carryingwith it by frictionthe belt I. The belt, through the pulleys Stand 3 5 ,`will cause the shaft to turn forwarder back, with, vor in opposition "to, the springe.

As the roll '2 decreases in' diameter, it reaches the size shown as roll'in'ligni, in which'case the take-up arm .'I zandshat '-8" slowlyturniin a counterlclockwi'se direction as'shown in Fig. 1; This rotation is assistedjby the spring -9' and fadjustable collar M, which-is 'secured to-'the shaft 8 by a screw I, the other endof therspring being supported in' a bracket 29 attached to the :frame 1 adjusted-v may be opera-tion of the automatic regulator 4 controls the electro magnetism in the solenoid 43 so that, as the roll decreases in diameter, the amount of friction yexerted by the brake shoes 32 on the brake wheel 38 is reduced proportionately.

Referring particularly to Figs.l1 and 6, a line 44 runs from one side of the power to a manual tension regulator 45 and a line 46 runs from it. The other end ofthe line 46 runs tothe automatic regulator 4 where it passes through controlling resistances (not shown) and emerges as a line 41, running then toa stationary brush 48. The brush 48 contacts with a segment ring 49, carried in fixed position on the spider l1. A line 50 running from the segment ring 49, see Fig. 6, connects to one side of the solenoid 43. The otherV side of the solenoid 43 is connected by a linef5| to a segment ring 52 which contacts with Ya brush 53, the latter being connected Yby a line V54 to the other side of the power.

Thus, itis ap-l parent that by placing power on lines 44 and 54, the solenoid 43 may be energized to Vregulate the tension in the running web.

One of the problems in using a reel with a device of this kind is to control properly the automatic tension regulator so that there is no rubbing action on the running web or web roll. This is accomplished by making the belt I ra freely movingV member, passing over the idlers as described above.l It will be noted in Fig.V 5 that the pulley 22 is rotatably mounted on an adjustable bracket 24Y whclrmay be moved on a stationary bracket 25 by an adjusting screw 23. Itis guided in this motion by a key 26,V and when properly clamped in place by suitable bolts.,A Y ,f I Referring again to Fig. 1, when thevbutt 6 is about exhausted,fa brush arm I5 is loweredto the dotted `line position. A `press driven belt V55 is lowered Vin'contact withla fresh roll I6 bythe same motion which -lowers the brush arm, and this fresh roll is rotated to a speed equal to that I of the rrunning web, the fresh roll having previously-been prepared for splicing in awell known manner. 'I'his type of splicing mechanism is well known in the trade and it is thus not 'conspliced roll I6 will then be moved against and runthe belt. I, and the rotation of the reel will Aplace the brushes 48 and 53 in contact with segment rings 56 and51 respectively, transferring the control to another solenoid 58 on another arm of the spider, which has a series of connections toal brake wheel and tension block arrangement When halffwidth rolls are used, it is planned to remove the belt I from the left hand pulleys to a shaft 64.

35, 36 and put it on the right hand pulleys, or vice versa, as needed. See Fig. 2.

Referring to Fig. 'I an arrangement of roll supporting device is revealed similar to that shown in Fig. 1. In this case, however, the automaticV tension regulator 4 is operated from straps 59 whose lower ends are secured to a rod 69 carried by brackets 6I secured to the floor. Collars 62 prevent side motion of the straps 59.

Referring particularly to Fig. 10 the upper ends of the straps 59 are attached to collars 63 secured This shaft 64 is mounted in suitable ball bearings and connected with a stub shaft 65 which in turn is connected to the automatic tension regulator 4 by a coupling 66. A spring 61, secured one end to a stationary bracket 68 and the other to an adjustable collar 69, mounted on the shaft 64, tends to keep the straps 59 wound up.

'Ihe straps 59 'carry a series of rollers 19, preferably made of hard rubber, which contact with the paper roll 2. The rollers 19 are mounted-on ball bearings and connected together b-y side rplates 1I and 12, said side plates being free to swivel on a bushing 13. Each individual assembly is held together by a short shaft 14 carrying a nut 15 and a bolt 16 Vfor holding it together. Fig. '7

shows a series of these rollers 19 bearing against web and brought, after splicing, to the running position occupied by the yweb roll 2 in Fig. '7. A spare roll I9 is shown, which, after roll I6 is about exhausted, may be spliced to the running web and brought, after splicing, to the running position theretofore occupied by webb rolls 2 and I 6.

Fig. 12 shows still another arrangement where the straps 59 are used in asimilar manner to that shown in Fig. 7 Instead of a series of rollers for bearing against the web roll a small travelingY belt or tape 19 is provided. This belt is trained around idler rolls 80, 8| and 82 and bears against the running web roll 2. A bracket 83 rotatably supports the idler rolls 88 and 8| and is secured by the straps 59. The bracket 83 also mounts the tightener arrangement including the pulley 82, as best shown in Fig. 13. A sliding bracket 84 is normally pressed outwardly by a spring 85 to keep the belt 19Vtaut. A bolt 89 serves as a limiting stop for the bracket 84 and is held in adjusted position by a nut 88. A screw 81, carried in the' bracket 83 and operating in a slot 99 of the bracket 84, serves to limit the motion of that bracket.

Fig. 14 shows a detailed View of the upper end of the bracket 83,V illustrating in detail the mounting of the rollers 8| as well as the rollers 88 which serve the same purpose as the rollers V to automaticallycontrol the tension of the running web to keep it constant regardless of roll diameter.

Thus it is apparent that a mechanism is provided for splicing web rolls at the full speed of the web, said web rolls being mounted in a rotatable mag'aine reel, with meansior regulating a tension device carried by the spindle of the roll Without producing friction on the surface of the web.

Having thus described my invention and the advantages thereof, I do not Wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a tension mechanism for a web roll, the combination with a reel for supporting the running web roll and other web rolls and an automatic tension regulator, of a free running belt for engaging the surface of the running roll to control tension thereto, idlers over which the belt travels, -a bell crank pivoted on said mechanism, two of said idler rolls being carried by said bell crank, a segment coaxially pivoted with the bell crank and relatively fixed thereto, and a pinion meshing with the segment for rotating said regulator.

2. In a tension mechanism for a web roll, the combination with a reel for supporting the running web roll and other web rolls and an automatic tension regulator, of a free running belt for engaging the surface of the running roll to regulate tension thereto, idlers over which the belt travels, a bell crank pivoted on said mechanism, two of said idler rolls being carried by said bell crank, a segment coaxially pivoted with the bell crank and relatively fixed thereto, a pinion meshing with the segment for rotating said regulator, and a spring for returning the segment toward zero position.

3. In a tension mechanism for a web supply device, the combination with a movable support for a web supply roll and an automatic tension regulator, of means controlled by the position of said support for connecting the regulator with a source of power and disconnecting it therefrom, said web roll support being in the form of a reel having means for simultaneously supporting a plurality of rolls, a set of brakes for each roll adapted to grasp a brake Wheel carried on the spindle of each web roll, a solenoid connected to operate each pair of brakes, and segments on the reel for connecting the solenoid with a source of power according to the position of the reel.

4. In a tension device, the combination of a tension regulating strap and a freely movable endless belt carried thereby for engaging a web roll and keeping the strap away from the roll, a frame having a roller adjacent each end and a third roller extending from the frame between said rollers for carrying the belt, and means adjacent the ends of said frame for connecting it with said strap.

5. In a tension mechanism for a Web roll, the combination with a reel for supporting the running web roll and other web rolls and an automatic tension regulator, of a strap for engaging the web roll to regulate tension, the strap being fixed in stationary position at one end and connected with said tension regulator at the other, rollers carried by the strap and engaging the web roll to avoid injury to the web, a brake wheel carried on the spindle of the roll, a brake for the roll adapted to grasp the brake Wheel, a solenoid connected to operate said brake, and segments on the reel for connecting the solenoid with a source of power according to the position of the reel.

6. In a tension device, the combination tension regulating strap anchored at one end and wound up on the other end, in accordance with the changing diameter of the web roll which it controls, with a running belt inserted in the strap and kept in Contact with the running web roll, said running belt being set in motion by the web roll.

'7. In a tension device, the combination of a tension regulating strap for a web roll anchored at one end below the roll and wound up on the other end above the roll, in accordance with the changing diameter of the web roll Which it controls, with a running belt inserted in the strap and kept in contact with the running web roll, said running belt being set in motion by the web roll.

8. In a tension device, the combination of a tension regulating strap for a web roll anchored at one end, and means at the other end for taking up the slack in the strap which occurs with the change in diameter of the web roll which it controls, with a running belt inserted in the strap and kept in contact with the running web roll, said running belt being set in motion by the web roll.

OSCAR C. ROESEN.

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