US2327832A

US2327832A - Web winding apparatus

Info

Publication number: US2327832A
Application number: US424931A
Authority: US
Inventors: Carl P Vogel
Original assignee: Eastman Kodak Co
Current assignee: Eastman Kodak Co
Priority date: 1941-12-30
Filing date: 1941-12-30
Publication date: 1943-08-24
Anticipated expiration: 1960-08-24

Description

Aug. 24, 1943. c. P. VOGEL 2,327,832 WEB WINDING APPARATUS Filed Dec. so, 1941 CARL P. V GEL INVEN FOR BY WW 4 ATTORNEYS Patented Aug. 24, 1943 man Kodak Company, poration ofNew Jersey ApplioationDecember s l v I k 4 Claims The present invention relates to winding maohines and particularly to a winding mechanism adapted for winding up a' coated web of material;

and in' which the wind-up rQlPi'sdrivenby being maintained in rolling contact-with a driving cyL inder. a l i It is common prac coated paper to have the wind up roll driven by being maintained in rolling contact with a driving cylinder. It is also well known in the art in winding coated paper to continually rock the wind-up roll longitudinally of the driving cylinder during the winding "operation. The purpose of this rocking action is to pound the edges or. the wind-up roll of paper against the driving cylinder so that they will not split due to back-coating along the. edges, vor due to thick'edges; and to assist in baggy paper being wound without formation of winding buckles. t v It has been foundthat in the winding of a roll of paper by means. of a rolling contact upon a driving cylinder, an unevenly and loosely wound roll is often obtained at the start of the windin operation due to 'slippa'ge between the paperand the driving cylinder, as the weignt'iof the roll is insuificient to maintain satisfactory rolling'eon tact. However, as the weightoi Ath roll gradually becomes'greater, slippage decreases; until finally it becomes negligible. Attire other extreme, as-the wind-up roll becomes excessively large, the weight becomes such thatthe paper'is held so tightly against the driving cylinder that winding buckles are oiten'form'edr r It has been found that these noted efiects can be overcome by forcing the wind-up roll against the driving cylinder during the ti'me'the' weight of "the wind-up roll is insufilcient toprevent slip pa e between the paper andvthe driving cylinder,

tice in winding up a web 01' the vertically of N. an, assent to East-.

Rochester, N. Y., a cork 1941, si-iai No. 424,931 I (11242 6501 that dirt or ire n up operation.

Therefore, one object of the present invention is the provision of a winding mechanismwhereby' thevvwind-up roll is simultaneously rocked and wound, and at the sametime; the *pressurebetween the wind-up roll and-the driving-cylinder is capable of being varied, in accordance with the size of=the wind up roll, by a fluid operating means: 1

A further mechanism,-of the typeset forth in which the rocking and jackingcrnelchanism for the wind-up roll is so arranged and located relative to the web being wound thatdirt, grease, and iron particles incident totheir operations cannot come in contact'with the webr l y t g l l yet: another object is the provision ina winding mechanism or the. type set iorth ofoa fluid operated means ior moving'the wind-up roll the driving cylindenand by means winding voperation bylfluid pressure, or by means of which. thefluid pressure may be neutralized and jacking'jup the wind-up roll toj decreas'e thepressure between the drivingcylinder andwthe' wind-up roll when the weight of the roll'becomes excessive. It is imperative with certain kinds of paper, e. a; paper which is to be coated with a sensitive emulsion" for photographic purposes, that all forms of foreignmatter, including dirt, dust, metal particles, and grease, be prevented from coming in contact with'the papehi For ex ample, it has been found that' mic roscopic pieces of iron 'on a paper used for photographic purposes will cause comparatively; large stains and blemishes on the finallyprocessed paper, and

which stains and blemishes cannot be removed,

Therefore; it is desirable-thatwthe'rocking; and jacking mechanism for thewind-up roll'besoxar-r ranged and located relative to the web of paper when; the wind-up roll i o f suchgsize thatthe slippage becomes negligible; or by the contact pressure of the wind up roll-against the driving cylinder-mayb partially neutralized when the size of the; wind-up roll becomes excessive. And still another object is the provision ofha wind-up. roll rocking and jacking "mechanism whiohis simple and efficient operation, and is soarrangedand located as to leave the wind-up r011 readily accessible for necessary manipulation and interchanging of rolls. a a a H The novel features that -I consider character istic of my invention are set forth with particularity in the appended claims. The invehtionitself, hbweven both as to its organization and its methods of operation, together with additional objects and advantages thereof; will best be -understood from the following'd'escription or specifieem iments when read in connection with the accompanyingdrawing in which:

Fig. '1' is a perspectiv I mechanism construotedinaccordance with the preferred embodiment of the. present invention,

l2 isa diagrammatic end view of thewindup roll and driving cylinder showing the path not the 'web to, be wound-'from'.'a-" snitab leisource of supply. 1 I I Y tothe operations of each will not fall onto the paper during the windof which the wind-up roll may beheld in contact means of which view of a web wind-up V the floor ll of the building. The driving cylinder is adapted to be constantly driven from any prime mover, not shown, through driving means including line shaft l2, vertical; shaft l3, and

shaft I 4 integral with the cylinder, each of the shafts being operatively connected together, as

by bevel gears, as shown. The web W is adapted to be wound upon a roll i5 which is held rigidly to a movable supporting frame i6 by means of collars l7, a shaft 18, and the .remov able bearings I9. The web'W is directed from any source of supply over a a pair of guide rollers 2i and" 22 to the under and around which.

side of the driving cylinder Ill it passes with a substantially ISO-degree wrap to the take-up roll, see Fig, 2. The source of supply of the web is not important tothe present invention, but by way of example it' might be stated that the supply 'could'be a. festoon drying'machine into which a paper is fed for drying-purposes after being coated 'witlr a material, such as blancfixe,

The supporting frameifi is rectangular in shape andfpasses through openings 23 in the floor H for purposes hereinafter fully--set'=forth: It will be notedthat the openings 23 i'ri'the floor are substantially wider than the parts of the supporting frame passing therethr'ough,' and this is to permit the supporting frame to rock' transversely as will be-clearlyflset 'forth below; As "will be obvious from the-drawing, the' s'up porting frame 16 is-free to new verticallybf the driving cylinder andis normally supported by theiwind-upi'roll resting 'on'the top offthe driving cylinder, this nmgwnma beingjthe' sole means ofrotatingtliewind-up rongj l" i i when winding,the' web the wind-up roll' is constantly rocked longitudinally of'the driving cylinder by the action ,of the pivoted," oscillated, jogger arm 2,4 upon the supporting frame i6; Thefjogger arm is pivoted' at onie end 25 to: a bracket anchored to"thfe underf;side of the floor and, the other end'thereof extends between two, rollers 26 mounted ind spaeed relation 'on the bottom crossarm-of the suppo'rtingtframe. The jogger arm 24'r'nay be constantly oscillated by any suitable eccentric mechanism operated from the driving 4 inder so that theiframe will'be rocked at all times during the winding operation; By'way'of a specific'embodiment ofya mechanism which might be used, I have shown a camj'i mounted on a drive shaft 7Z8directly connected'to the driving mechanism of the driving cylinden'engaging two, spaced lugsZil ori'the jogger arm, It is pointed out that with, this mechanism for rocking the wind-up roll, all mechanicallycooperatingparts which might tend to discharge foreign. material such as iron, grease, etc.,- are. located below the web ;being;;wound-; s o that there is no chance of fore gn ;matter e rnanatring from this source comingv in contact'with the web. As was rpointediout above the "purpose of this rockingaction of theriwind-up rolllongitudinally of the driving cylinder is to pound the edges of the wind-upfroll'againstthe driving-cylinder so that theywill not split due to back coating along: the edgesand to reducethe thick edges, as well as tovallow baggy paper to:

mechanism of the driving cylguide plate 20 and be wound without the formation of winding buckles. I

As pointed out above, in the winding of paper bylmeans of a rocking action upon a driving cylinder, an unevenly and loosely wound roll is often obtained at the start of the wind ing operation due to slippage between the paper and the driving cylinder, as the weight of the-roll isinsufiicient to maintaingsatisfactory driving contact. However, as the weight of the roll gradually increases, slippage decreases until finally it becomes negligible. At the other extreme; as the wind-up roll of paper becomes excessively large, its weight becomes such that the paper is'heldso tightly against the driving i cylinder that Winding buckles are often formed.

It; is'fthereiore, the object of the present inventionto provide means for increasing the pressure between the wind-up roll and the driving cylinder at the start of the winding operation when the wind-up roll is .too light; for permitting the weight of :the wind-uproll and: frame to determine they contact pressurewith the driving cylinder when the Weight of the roll is within limits to do this satisfactorily; and for partially neutralizing the 'con, tact pressure when the wind-up roll becomes excessively'large. To this end, the pressure arm 35 is, pivoted at oneend 3| to a support 32; fixed;

and extending downwardlyfrom,fthe underside of the floor H. The other end of the pressure arm terminates in afplate'33'on which are rotatably mounted fur1rollers Miengaging op positeedges of the bottom cross farm of the sup-J porting-frame lihasshown-in Fig; 1; Thepressure arm 3!] is adaptedjto be raised and low ered by the action .OfzthQ piston in a double-act ing fluid operatedv cylinder 35 supported from the under side of the floor. =The"pisto'n' rod 36 is pivotally connected to. the pressure arm 30, at 38 and tlle'fiuid operating cylinder 35' is 'pivotally supportedto theiun'der side of thefloor tel-account: for the r-.arcuate movement 'of the pressure arm? 31! ink? raising and lowering the 7 frame vertically'so that the, piston of the' cyla inder I will operate .with '1 a straight :thrust under all positionsof adjustment of-the pressure arm. Fluidunder pressure compressed air, steam, oil, etc; can be admitted to the top or bottom of the fluid operated cylinder J35 through'the feed li'n'esi391an'd 4EJ,.respectively, and-Tone section ofeach of these feed lines,= preferably that lmme-i diately adjacent thetcylinder; should be :flexible to permitv the cylinder-t0 pivot by the necessary amount aboutits'pivotal mounting. The admis sionof fluid to the two

feedlin'es

39 and 40 from the'main feed line 4| 'is'controlled by a manually operated three-way valve 42,'0f well-known con-' struction; and capableof being adjusted by'a hand leverv43 located above 42 is'such'that when the hand lever 43 in one direction airiwill be admitted to line 39.-to force the piston downwardlyrandjpull the windup roll down against the'driving cylinder to increase the pressure of contact between the two during the time winding is being started. In the neutral. position of ...the :hand 'tlever the valve should exhaust both feed lines39 and :40 so that no pressure other than the weight of the wind up rollplus the weight of the supporting frame e1'- is thrown the i'wind-up roIIisLSufiicientIy VIarQe thatlthe force of gravity" gives a desired pressure .contact ;be-'

; tween theisame and; the driving (cylinder; In the the floori .The valve 1 other position of the hand lever the' valve should permit the air, or fluid, to'enter lin llland cause the pistonto pull upwardly on the'pressu're arm 30 and partiallyfneutralizethe pressurec'aused by theweightbf the wind-up roll and-the supporting frame wh'erithe size of the roll becomes so large that it causs'an'excessive contact pressure between the wind-up roll and the driving cylinder. i Y 1 f v Each 'feedline 39 and All may include 'a pressure regulator 44, M foi 'r'eg ulatingihe pressur in two lines in accordance with conditions found suitable 3 in practice with webs of different maand wound at different winding speeds.

v The pressure for which the valves are regulated may be'indicated by the pressure gages 66, 45K in-the respective-"lines, Checkvalves '45 and 45 are placed in branchesfof the respective feed lines 39 and All-to permit thelinefs to be exhausted without necessitating the fluid topassba'ckw'ards thru the pressureregulators and toeaus the incoming fluid topass thru the pressureregulators. Valv'elfi 4i areplacedinithe respective feed lines 39 and M so thatthe speed of introductionof the fluid intothe cylinder s scar be varied asdesired. a a q One skilled in: thefalrt will readily appreciate the fact that th'e'wind-up roll rocking and jacking mechanisms are such that the two can operate simultaneously without the movement of the wind-up roll induced by one aitecting, in any way,

the movement of the wind-up roll induced by the other. Furthermore, the particular arrangement of the rocking and jacking mechanisms for the wind-up roll insures against foreign material in- :1

cident to the operation of the same coming in contact with the web, in addition to leaving the wind-up roll readily accessible for inspection and replacement with an empty roll.

I havealso found that a more tightly and more evenly wound roll, free from winding buckles, results in the manipulation of the contact pressure between the wind-up roll and the driving cylinder in accordance with'the variation of the change in 7 size of the roll. i

This is true even in cases where the ogging mechanism is not used in conjunction with the pressure regulating mechanism as set forth above. The jogging action of the roll is beneficial in winding paper which has a tendency to y be baggy for the reason that it tends to stretch the bags out of the paper at the point of windup and thereby overcomes winding buckles that would result from the presence of such baggy portions in the web. However, in windin up a previously calendered paper which is smooth and has no bags in it which would tend to cause winding buckles, it is not necessary to jog the wind-up r011 during the winding action. It is desirable, however, to obtain a tight, even, wind-up roll to vary the contact pressure between the wind-up roll and the driving cylinder in the manner set forth. This factis pointed out to show that the plicated at any desired time without requiring specialattentioniof'the operator; The fact that time inspecting thew'eb being'woundf Furthermore; this jackingmechanism provides a vertical support for the frame at all" times to prevent'the same from dropping 1 down" on the top of the driving cylinder and injuring the cylinder or-the operator at the'time a run Wind-uproll is being 7 removed'from the machine andis being replaced by an empty-roll. 1 It will be obvious that if there was'no jacking means for'fthe frame IE} then when a full wind-up roll was removed from' the framytherenwould be lno'thing to prevent the frame from dropping downwardly against the driving-cylinder. I

9'- Althou'gh Ihave shown and described certain specif c embodiments of my invention, I am fully aware that many modificationsth'ere'of are possible. Myinvention; thereforeis not to be limited to the precise details of construction shown and described but' is intended to cover all-mo'dificationscomi'ng within the scope. of 'the' appended Having thus describedmy invention, what I claim is new and desire to secure by Letters Patent of the United States is: I

1. In a web winding machine the combination with a driving cylinder, a wind-up roll for the web disposed above said driving cylinder and in rolling contact with'the same to be rotated thereby, asupporting frame rotatably supporting said wind-up roll and adapted to move vertically, and

rock longitudinally, relative. to the axis of said driving cylinder to move the wind-up roll vertically, and rock the same longitudinally, relative to the driving cylinder while the wind-up roll is being rotated by the driving cylinder, means for continually rocking said supporting frame during the time the web is being wound on the windup roll, and fluid operated means acting on said supporting frame below' the wind-up roll and adapted to move said wind-up r011 vertically relative to said driving cylinder for varying the amount of pressure between the two in accord- I ancewith the change'in size of the wind-up roll.

2. In a web winding machine the combination with a driving cylinder, a wind-up roll for the web disposed above said driving cylinder and in rolling contact with the same to be rotated thereby, a'supporting frame rotatably supporting said wind-up roll and adapted to move vertically, and rock longitudinally, relative to the axis of said driving cylinder to move the wind-up roll vertically, and rock thesame longitudinally, relative invention is not limited to the combined use of the jacking and jogging mechanisms, but covers the use of a jackingmechanism of the type set forth even when no jogging mechanism is used or required.

to the driving cylinder while the wind-up roll is,

being rotated by the driving cylinder, means for continually rocking said, supporting frame during the time the web is being wound on the windup roll, a fluid operated cylinder the piston of which is operatively connected to the supporting frame at a point below the wind-up roll so as to move the frame and wind-up roller vertically relative to said driving cylinder, and manually operated means for controlling the introduction of a fluid under pressure into said cylinder to vary the amount of pressure between the driving cylinder and the wind-up roll in accordance with the change in size of the wind-up roll.

3. In a web winding machine the combination with a driving cylinder, a wind-up roll for the web disposed above said driving cylinder and in rolling contact with the same to be rotated thereby, a "supporting. frame rotatably supporting said wind-up roll and adapted to move vertically, and rock longitudinally, relative to the axis of said driving cylinderto' move the wind-up roll vertically, and rock the same longitudinallygrelative to the driving cylinder while the wind-up roll is being rotated by the drivingvcylinder, means for continually rocking said supporting frame during the time the web is being wound on the windup roll, and including a pivoted joggerarm operatively, connected to said supporting frame at a point below the path of the web, an eccentric for oscillating said jogger armabout its pivot, said eccentric being connected to the driving mechanism for the driving cylinder, and fluid operated means acting on said supporting frame below the path of the web and adapted to move said wind-up roll vertically relative to said driving cylinder for varying the amount of pressure with the change rock longitudinally; relative to 'the:-axis. of said driving cylinder to move the wind-up rollverti cally, and rock the same longitudinally,; relative to the driving cylinder while the windup roll is being rotated by the driving cylinder, means for continually rocking said supporting rrame dur-. i

ing the time the web, is being wound on the windup roll, and including a pivoted jogger armoperatively connected to said supporting frame iat a point below the path of the web,'an eccentric for oscillating said jogger armabout its pivot,

said eccentric being connected to the driving mechanism for the driving cylinder,- and fluid op-x erated means acting on said-supporting frame below the path of the web and adapted to move} said wind-up roll vertically relative to said driv ing cylinder for; varying the amountof pressure between the'two 'in accordance with the change in size-of the wind-up "roll, saidfiuid-operating means including a; pivoted arm operatively connected at one end to said supporting frame at a Web, a double acting point belowthe path of the fluid operated'cylinder the piston of which'is con nected to said armto, move the frame vertically 1 of the driving cylinder, and manually operated means for controlling the introduction'of a fluid I under'pressure into said cylinder;

- CARL-PQVQGELQ v