US3162393A - Tucking means for a web-winding machine - Google Patents

Description

Dec. 22, 1964 G. DE GELLEKE TUCKING MEANS FOR A WEB-WINDING MACHINE 7 Sheets-Sheet l Original Filed Jan. l7, 1961 INVENTOR: 6588/7 fiiazfxi Dec. 22, 1964 G. DE GELLEKE 3,162,393

UCKING MEANS FOR A WEB-WINDING MACHINE Original Filed Jan. 17, 1961 7 Sheets-Sheet 2 INVENTOR: 6am" 0565145? Dec. 22, 1964 6. DE GELLEKE 3,162,393

TUCKING MEANS FOR A WEB-WINDING MACHINE Original Filed Jan. 17, 1961 '7 Sheets-Sheet 3 IN VEN TOR: fiae/r 25651154? Dec. 22, 1964 6. DE GELLEKE 3,162,393

TUCKING MEANS FOR A WEB-WINDING MACHINE Original Filed Jan. 17, 1961 7 Sheets-Sheet 4 Dec. 22, 1964 G. DE GELLEKE 3,162,393

'rucxmc' MEANS FOR A WEB-WINDING MACHINE Original Filed Jan. 17, 1961 '7 Sheets-Sheet 5 v, IN VEN TOR.- fizez/r piazza i Armwar Dec. 22, 1964 6. DE GELLEKE 3,162,393

TUCKING MEANS FOR A WEB-WINDING MACHINE Original Filed Jan- 17. 1961 7 Sheets-Sheet 6 IN VEN TOR: 65w fiifim 54 BYZ:

United States Patent Office 3,162,393 Patented Dec. 22, 1964- 3,162,393 TUCKING MEANS FOR A WEB-WINDING MAtCHlNE Gerrit De Gelleke, Parsippany, N.J., assignor to Cameron Machine Company, Dover, N.J., a corporation of New York Original application Ian. 17, 1961, Ser. No. 83,229, now Patent No. 3,134,553, dated May 26, 1964. Divided and this application Get. 16, 1963, Ser. No. 316,692 3 Claims. (Cl. 24266) This application is a division of my copending application Serial No. 83,229, filed January 17, 1961, now Patent No. 3,134,553, dated May 26, 1964.

This invention relates to tucking means suitable for use in web-winding machines and, more particularly, relates to improved means for starting a leading end of a web around a rewind core in such a machine so that winding of the web material may be started without the necessity of using glue or other means for affixing the leading end of the web to the core.

Although the present invention may be employed with various types of winding machines, it is disclosed and described herein as employed in a winding machine and with roll-changing mechanisms all as disclosed in considerable detail in my copending Serial No. 821,395, filed June 19, 1959, now Patent No. 3,030,042, dated April 17, 1962, without, however, limiting this invention to its use with or as a part of that precise kind of winding machine.

It hasbeen common practice, as a first step in machine winding of web material, that the leading end of the web be afiixed to a rewind core in the machine, usually by using an adhesive of some kind. The principal object of the present invention is to provide satisfactory means for enabling such winding to be started on a rewind core without the need of using any adhesive or more or less equivalent afiixing means.

In some winding operations it has been the practice to start the operation by very carefully setting up one or several turns of web material upon a rewind core in the machine without, however, using any adhesive. To accomplish this, it has usually been necessary for the leading end of the web to be very carefully tucked manually about the rewind roll; and, prior to this invention, satisfactory means for performing this tucking operation mechanically and automatically have not been developed. The present maintained in parallelism with said core, may be moved toward thev latter in order to cause a first roller of said assembly to engage a leading end portion of web material and press it against thecore and to cause a second roller of said assembly to engage and press an adjacent part of said leading end portion against an adjacent winding drum ".of the machine. The arrangement is such that, when the core and drum are oppositely turned upon initiation of a winding operation by the machine, the leading end portion of the web, between the two rollers, will form a bight which will enter a nip area between the rewind core and the winding drum against which said core, with web .material thereon, is in frictional driving engagement during a winding operation. As disclosed herein, the mentioned tucking roller assembly is supported in themachine for pivotal movement toward the rewind core but it will be obvious from the following detailed description that the tucking assembly need not necessarily pursue a pivotal 'or arcu ate movement toward the; rewind core but may, if desired, be arranged to pursue a straight-line movement into engagement with the leading end portion ofthe web to press the latter against said core and the adjacent winding drum.

Without limiting this invention thereto, the present invention is disclosed herein as applied to a winding machine and roll-changing apparatus all as exhibited in my mentioned patent No. 3,030,042. The present disclosure details those parts of such a winding machine and rollchanging mechanism which cooperate directly with the tucking means comprehended by the present invention. If details are desired additional to those set forth in this application, they may be obtained by reference to the mentioned patent No. 3,030,042.

In the accompanying drawings:

FIGURE 1 is an approximately central, cross-sectional View through various winding drums and'rollers of a winding machine having therein a preferred embodiment of tucking means according to this invention; the parts of the winding machine which are shown including all parts which, in one way or another, coact quite directly with the tucking mechanism, and this view shows all such parts as positioned approximately at the beginning of an operation of winding web material upon a new rewind core which has just been inserted in the machine. I

FIG. 2 is an enlarged diagrammatic representation of' certain parts of the mechanism illustrated in FIG. 1, the parts, however, being positioned as they would-be shortly before the condition shown in FIG. 1, i.e., after a new rewind core has been inserted in the machine and before an intervening web portion between the new core and a previously filled rewind core has been severed.

FIG. 3 is a view substantially along the lines of FIG. 2 but showing the various parts as they would be at the instant of severance of the mentioned intervening web portion.

FIG. 4 is a view substantially similar in general to FIGS. 2 and 3 but showing the various parts as they would be positioned shortly after severance of said intervening -web portion and before the tucking mechanism is brought into play.

FIG. 5 is -a view substantially similar in general to FIGS. 2-4 inclusive but showing a tucking assembly in position to tuck a severed leading portion of the web partially about a new rewind core so that, when a further operation of winding is started by the winding machine, said leading portion will wind about the core and, thus, enable a desired supply vof web material to be wound upon the core. I Y

FIG. 6 is an enlarged, horizontal sectional view substantially on the line 6-6 of FIG. 1.

FIG. 7 is an enlarged end view of. the tucking mech anism and directly related parts of the Windingmachine as viewed directly oppositely to the views of FIGS. 1-5.

A general understanding of the winding machine, in which this invention is illustratively disclosed, may be gained from FIG. 1. A web W, issuing from: a supply roll (not shown), moves, in.the,direction indicated by arrows applied thereto, to a winding assembly consisting principally of an elongate front winding drum 20, and a generally similar, parallel, rear winding drum 22,

one or both of these drums being power-driven.

by the disclosed machine, these webs. hereinafter are referredto in the singular number,

PQ washin the. Win i assembly, e. W b W fi contacts the drum 20, passing in front of and over the facilitatethe commencement of the operation of winding the web upon the core;.but the present invention permits web winding without the need for applying adhesive to the new core.y 7 V r v The. illustrated winding machine includes-ahorizontal, rotatable riding roll 38, borne at its ends in suitable bearings in similar carriages, 40 having guiding portions 42, at their upper ends, slidable vertically upon and guided by stationary upright'g'uide members 44' of. the

winding machine. Thus, thexridingroll 38may rise in continued riding engagement. with the web material accumulating upon the rewind core 3 6. The carriages 40. and the riding roll 38 may also be rai'sed' and lowered. independently ofthe rewind core: 36 in a manner and for purposes hereinafter explained.

, The tuckingmeans, according to this. invention, ale

though capable of functioning quite independently of means, either manual" or automatic, for changing cores in the machine; may be employed very advantageously to 'operateiin. conjunction With automatic core-changing means'such as are disclosed, for example, in saidPatent No. 3,030,042; and are illustrated and will now be described as. utilized withthe latter arrangement.

Asmay'be'understood in more detailfromisaid patent,

the'core-changing mechanism comprises a. pair of substantially similariunload arms 46 arranged to work simi- I "larly' in unison by being keyed at their lower ends upon opposite'ends of-a horizontal. rock-shaft 485- which is parallel" to the axes of drums 20 and 22 as well'as'to several rolls, in the. machine. .These' arms are pivoted 'in vertical alignment with opposite end. portionsof a filled core (sometimes hereinafter referredto as afilled iCOI'Q'Ol' roll, ssmff hich, uponbeing filled by winding tothe desired extent,'has been'raised by vertical lifters 52.; These lifters are-arranged .to engage ben'eathiop; posite end pottionsof a filled roll 36F, when the latterk is still in winding'engagement with the drums 20 and roll to receive the latter. when lowered thereinto. The

lifters '52- have. operating. means Knot .fully. shown), for raising and lowering, them to liftfa filled rewind. roll' 36F.

substantiallyfrom winding position' andpthen toulower said roll'intotheslots 50,. i

In FIGS; 1-5, the arms 46 {only onebeingin View) 7 are illustrated in whatgrnay betermediia half-out position which they may occupy'throughout a tucking oper- V 'ationas hereinafter described, Ina full-ouf position.

of the arms 46, theywould be considerably rightward j'of the-position which they are illustrated, in FIGS.

15,and in this full-out;positiona web-holding roller 54- is turned by'a suitably driven wheeler roller 6..to

press a trailing end portion '58 ofithe web .ti'ghtly against an underlying; turnof; the web on thefilledrewind roll.

36F; 'This'trailing. end portion may have'adhesliv 69.21p-

in unison by being welded, keyed or otherwise fixed at their inner or lower ends upon opposite ends of a horizontalftubular rock-shaft 64 borne upon rock-shaft 48 for rocking motion relatively to the latters axis. The 5 load arms are pivoted mechanically, in unison,=through rocking of. the tubular rock -shaft 64 by crank means (not shown).

Each of the load arms 62 is provided with a closable jaw 66' into which a new rewind core may be placed when the arms 62 are in their outer position as shown in FIG. 1, and said arms may then be pivoted counterclockwisely, to. their inner, position shown in FIGS. 2 and 3, to move said new core into winding position upon the winding drums and 22 after a previously filled 15 core has beenrenioved by the arms 46 fromsaid windin-g position. In" being moved to and" from saidfouter positi n, .an elongate brush 68,-fixed to the two load arms 62,.engagesfa glue-applying"roller 70 to receive glue therefrom and apply itas at-60to the trailing end 0 of web on afilled' rewind core 36F in a manner hereinafter described. 1 An elongate'knife 72 witha cutting edge 74 which,preferably, is serrated, is also fixed to the two load arms 62 and'operates to cut-the. web at the end of a filled rewind roll 36F in a manner hereinafter described.

'Tucking means according to thisinvention comprises an assembly comprising a pair of tucking rollers. 76 and '78 preferably having surfaces of relatively high friction material such as, for example, rubber. These tucking rollersare carried] in parallelism to the winding drums 20- and 22 and to a; new or'bare core 36N, supported in winding'position between and upon' said drums. The tucking rollers are thus held by; being mounted upon the 7 lower end of a pair-pf similar, pivotal, suspension arms 81 which; are keyed to oppositeends of a horizontal rock-shaft 80;" and this; shaft extends crosswisely of the machine and is rockably borne at .a position above the riding'roll 38 in similar suitable Jbearings in the two carriages "400 f theriding -roll-. 7 H

Eachof the suspension arms 81 comprises an elbow 82=an upper part of which "is keyed to the rock-shaft 80.; A lower part of said elbow is formed with a groove 84 :which, during a tucking operation, usually extends vertically ormore nearly vertically than horizontally.

The groove 84 extends into the upper part of the elbow 82 and preferably is open at both ends. Slida bly mounted within the groove 84 is a slide member 86 an upper portionof which'is provided with a longitudinal slot 88 through which extendsa headedlocking bolt 90 disposed non-adjustably withinga .suitablew bolt hole in the lower portion of thewelbow. 82'. A wing nut 91 or equivalent nut on bolt 9.0;"when loos e, permits the slide member 86 to he slid ,upwardly'or downwardly to a desired adjusted-position in groove 84,v but said nut, when tightened,

55.1serves, with said, bolt, to lock'the slide member in's uch .an, adjusted position in a 'well under'stood manner.

l The tuckingsroller 76 is borne,iat.its ends, for rotation within suitablefbearingsat the lower ends of the slide members 86, while, the tuckingroller 78 is borne, at its ends, for rotation withinsuitable hearings in lugs 92,.

in' closely spaced, side-by-siderelationship to the roller 76." As best seen inFIG. 2-, e'ach lug 92.is secured tightlyupon a related'slide member 86 bya pair of beaded ho RS 94 which extend through a slot 96 and are threaded into the'slideimember approximately in the position 1 shown in the drawing. The slot 96 is of suchj'length that,'when the bolts 94" are loosened, the lugs 92 may be i shifted upwardly-or downwardly'to desiredadjusted'posi- .tions .on -thef'slid'e member .86 and-they may, of. course,

bolts, LV; g 1;. ;-Durin ga tnclging op erationgthe rollersgv76 and. 78 are intheir positions, indicated inFIGS-rli and 5, in'which the, suspension arms 81 5are' only; slightly-angular from -75 ree rsuspcindee, Po i ions... r1

be; locked insucha'djusted positions by tightenin'g'of said P i n a maniler hereinafter explained, tojjhold 1 a a I it securely tothe underlying turn, of1the web;- 4 i e ore-changing mechanism also comprises 'a pair of] substantiallysimilaii load 62 (only. one. being hQWQ .3511; ,ofi'Fl Gsple'j, arranged to w similarly The suspension arms 81 and the tucking rollers, particularly roller 76, are arranged to function in connection with a related web-severing operation as well as for tucking purposes; and, for the web-severing purposes, the arms 81 must swing upwardly to some extent as indicated in FIGS. 2, 3, and 4. Cam means are provided, in association with one of the suspension arms 81, to achieve such upward swinging. These cam means comprise a cam plate 98 (FIG. 7) which is fixed to a side frame member 100 of the machine in a suitable manner as, for example, by a bracket 102 which, in turn, is suitably fixed to said frame member as, for example, by bolts 104.

The cam plate 98 has two cam surfaces 106, 108. To afford some latitude in the disposition of the cam plate 98 and its said cam surfaces, it is formed with a mounting slot 110 extending longitudinally thereof. The plate 98 is held upon the bracket 102 by a single nut-and-bolt arrangement in which a headed bolt 112 extends, preferably outwardly of the machine, through a washer 114 of greater width than the slot 110, thence through said slot, and, with a fairly accurate fit, through a suitable bolt hole. in the bracket 102; and a nut 116 is threaded upon the end of the bolt 112, the arrangement being such that, when the nut 116 is loosened, the plate 98 may be slid upwardly or downwardly and/or angularly in relation to bracket 102. When the nut 116 is tightened, the plate 98 is held firmly in its adjusted position upon the bracket 102.

The cam means for swinging the tucking rollers 76, 78 upwardly include, also, a cam-follower plate 118 best seen in FIGS. 2-5 and 7. The plate 118 is arranged to operate as a bell-crank and it is pivotally mounted, at the juncture of its arms, upon the rock-shaft 80 in such manner as to be rotatable relatively to that shaft; hence, said plate is rotatable relatively to the suspension arms 81 which, as already stated, are constrained to turn with the shaft 80. The follower plate 118 is disposed at that end of shaft 80 which corresponds to the side of the machine upon which the cam plate 98 is mounted, and one arm of the plate 118 is provided with a cam roller 120 which operates as a cam follower on cam surfaces 106 and 108 of the plate 98.

Fixed upon the rock-shaft 80 and constrained to turn therewith is an arm 122 and, threaded through a lug 124 provided on plate 118 on the end of the latter remote from the roller 120, is an adjustable abutment screw 126 having thereon a lock nut 128 by means of which it may be locked in any adjusted position with reference to said lug. The abutment screw 126 is in the vertical plane of the arm 122 so that, during certain parts of a winding operation and, more particularly, of a web-severing and web-tucking operation, the upper end of the abutment screw 126 will abut a lower surface of the arm 122 and, when the cam-follower plate 118 is turned by cooperation with the cam surfaces 106, 108 as the riding-roll carriages 40 with the rock-shaft 80 move vertically, the cam-follower plate 118, through the mentioned abutment screw 126, operates to swing the arm 122 upwardly. That causes the shaft 80 to rock counterclockwisely, as viewed in most of the figures of the drawings, and causes said shaft to swing the suspension arms 81 outwardly follower plate 118 which is remote from the cam roller The lifters 52, for lifting a filled core from its winding position on the drums 20, 22, are similarly carriedat opposite ends of the machine. Each lifter is pivoted at 135 (FIG. 1) in a vertically guided frame 137 connected to an above riding-roll carriage 40 by a lost-motion link rod 139. The lower end of the link rod is suitably connected to the frame 137 by nuts 142 and extends upwardly, slidably through an integral lug 144 on the ridingroll carriage; and a collar 146 is adjustably fixed upon the link rod, above the lug 144, by a set screw 148. The lifters 52 cannot pivot downwardly from lifting position as shown in FIG. 1; however, they are capable of pivoting upwardly upon engagement with a subsequently inserted core, upon downward movement of the frame 137, to project under and later lift the latter core in a subsequent operation of the machine.

To understand the operation of the disclosed tucking means, not only for tucking purposes but also for cooperation with the knife 72 for web-severing purposes, it should be understood that, during a winding operation, the riding roll 38 rests upon the core 36N or, more properly, upon web material being wound upon that core so that, during the winding operation, the riding roll rises and, likewise, its carriage 40 rises with the principal parts of the described tucking means which are mounted thereon.

The mentioned rising movement occurs as a result of the increase in diameter imparted to the core by the accumulation of web material thereon. Then, when the desired amount of web material has accumulated on the core 36N, constituting the latter a filled core 36F, the drums 20 and 22 are stopped by stopping of the motors which turn them and, at about the same time, the riding roll 38 is lifted by means of suitable motors (not shown) which operate to pull upwardly on cables 134 which are fixed to the two riding-roll carriages 40 at opposite sides of the machine (only one such cable being shown in the drawing).

As the riding roll 38 is thus lifted from the filled core, continuation of such lifting causes the frame 137 and lifters 52 to be raised to engage the latter underneath opposite end portions of the core which protrude beyond the web material wound thereon; and further continued upward movement of the riding-roll carriages 40 causes the riding roll 38 and the filled core to move vertically up wardly in unison until said core is in a sufficiently elevated position that unload arms 46 may swing inwardly to bring their slots 50 directly underneath the ends of said filled core.

Immediately after the unload arms reach their inward position, the riding-roll carriages 40 and the related lifter frames 137 are motor-lowered to deposit the filled core in the slots 50. Then, the unload arms carry the filled core (now designated 36F), to an approximately half-out position as shown in FIGS. 1-5. Meanwhile, the load arms have moved to a full-in position in the machine and have deposited a new core 36N between and upon the drums 20, 22 in winding position, at which time the new core 36N and the filled core 36F are relatively positioned approximately as shown in FIG. 2; and the riding roll 38 and the tucking rollers 76 and 78, although somewhat lowered from their uppermost position, are, nevertheless, still somewhat above thenew core as shown in said figure.

Further descent of the riding roll and the tucking rollers initiates the automatic tucking function of this invention now to be described. This further descent, caused by resumption of operation of the motor means for operating the carriages 40, causes the cam-follower plate 118 to be pivoted counterclockwisely (as viewed in FIG. 2) by cam surface 106, the tuckingrollers 76, 78, meanwhile moving downwardly and clearing the filled core 36F (the cam plate 98, of course, being in a proper adjusted position to provide such clearance); and then engaging the intervening portion of the web which extends between the core 36N' and the filled core or rewind roll 36F to push that web portion downwardly, as in FIG. 3, into engagement with knife edge 74 to cut the web and into engagement with glue brush 68 to apply, glue at 60, across the trailing end of the web on the filled core.

At about the time that the downwardly moving tucking in the manner described, upon the overlying'core afterthelatterhas received its quotaof-web material.

After the web has been severed and while the-various, parts of the machine remain as illustrated in FIG. 3, the parts of the'web assume positions somewhat: as shownin. FIG. 4. Immediately upon severance of the web, however, the operation of the machine is such that theload arms; 62, having placed the new core in winding position, start swinging outwardly" or clockwisely as a; result of which action they cause the suspension arms 81 to swing,

outwardly and upwardly, as indicated in FIG. 4, this swinging action'occurring as a result of coaction of a cam member 136 fixed upon one of the load arms at oneend of the machine and a cylindrical cam-follower surface 138 formed at a corresponding end and near thebearing of the tucking roller 76. This earn, arrangementis such that the cam member 136, as the load arms 62 swingoutwardly, raises the tucking roller 76 above and clear of the cutting edge of the knife 72, thereby avoiding possible damage to the knife or the tucking rollers at that stage of operation.

After the load arms '62 have moved outwardly to the extent that the cam member 136, clears the cylindrical cam-follower surface 138, the suspension arms 8 1 swing downwardly and inwardly by gravity and bring the tuck-j ing roller 76 down upon the then leading portion LW of the web which is aboutto commence being wound upon the new core 36M In this manner, the tucking rollers 76, 78 assume tuckingpositiongas indicated inFIG. 5, v

in which roller 76 presses against a web portion which, in turn, is pressed against thelnew core36N and tucking roller 78 rests upon a portion of the webjnearer to its leading edge, which portion is held 'or pressed downward-f 1y by the roller 78 against an underlying portion of being fed to the machine around drurnlt).

Up to this point, during the period following the completion of winding on the. previously filled core 36F, the motors which drive the drums 2t) and 22 during the windweb ing operation are inactive and said drums arestationary, However, immediately after the engagement of the tucking rollers 76 and 78 with the several mentioned web portions and theconsequent pressing of the latter againstthe new core 36N'and'the drum 29, a winding'operation is resumed by starting of the motors which operate the drums 2e and 22. During the slow initial rotation of the drumsand the new core 36N, the latter being frictionally driven by the drums, the tucking roller'iti is frictionally driven by the' new core and thetucking roller- 78 is frictionally driven'by the winding drum 29, these rollers 76, 78, as a result, rotating'in the directions arrows applied thereto in FIG: 5. L s

It will he -seen that at the commencement of a new winding operation and considering the rollersas viewed in FIG. 5, tucking roller '78, by rotating clockwisely amassed end portion of the web are, held firmly against. the core by the incoming web and continuation of the winding operation results in proper windingof the webtrnaterial.

on the core without the need of using any adhesive.

As the new winding operation continues the accumula: tion of: web'material on theflnewcore 36N raises the riding roll 38 and its carriagesi lfl'; thereby causing surfaces 108 and 106- of cam plate 98to swing and hold suspension arms 81,- with the tucking rollers, outwardly through the medium of thecarn-follower plate 118. Continued winding, roll changing, cutting, gluing, and tucking proceed in the manner: already described.

, 'It willrbe clear to those familiar with web-winding ma-' chines that therpresent concept; relating to web-tucking meansrnay be utilized in various 'waysother thanherein disclosed-without; howeveigdep-arting from this-invention. Iclairnf f' Q 1. I n web-winding apparatus comprising a rotatably driven, cylindricah winding. drurnfmember, and; a rewind core member'supported in parallelism,withfand in frictional driving relation to saidv drumsmemberto derive rotation therefrom, to draw. elongate web material through a nip area between said drum and core frnembers at a 'web-receivingside-thereof, and tucking'rneansfor pushing a: leadingfwehportion into said nipareaat the start of a "winding operation; said tucking meanscomprising a pair *of spaced,- parallel, tucking rollers, means-supporting said rollers at said web-receiving side, in parallelism withsaid members, for engagement of said rollerswith spaced parts of said leading webportion whichrestupon'said members; and said engagement beingsufiiciently forceful to cause the two tucking rollers to be driven oppositely by rotation of said members to push webmaterial of said leading. web portion, located between the latterssaid spaced parts, toward and intorsaid nip area,

2, A.web-winding machine'icornprising a driven, cylindrical, windingdr-uinmembena'rotatable, cylindrical, re.-

Twindcore-tmember supportedin frictional driving relation to said drum member to deriveirotation. therefrom to draw elongateweb material through. anip: area between said drum and, core'mernber's at aweb-receiving side therei of, and a tucking assembly eomprising a pair of spaced, parallel, tucking rollers, and supporting means :holding saidrollers inseparate, frictional driving relation tosaid core and. drum members in positionto ip ress against said members, atsaid web-'receiving side with spacedportions of a leadingwebportion-frictionally held between a first of said tucking rollers and said coremember on the one hand and, betweenla second of said tucking-rollers and .wsaid drummember on-the other hand; said tucking rollers V thus, being adapted tto fotate oppositely ini 'response to indicated by the against the'leading end of theiweb, tends to push that end I of the web toward the core 36N, while tucking roller;76

by rotating counterclockwisely.againstthe web portion on the core 36 N, tends to push the latter web portion downwardly, This urging of "the web downwardly. by

roller '76 and inwardly or leftwardly byrroller .78 induces the formation of a;bight 14.0 in the adjacent portion of the web and, asthe rotationjojf the winding drum 20 and new core 36H continues, the 'bight is forcibly tucked into .70 place at a nip area betweenlthe core 36N and thepor tion l of the incoming 'web which is "moving fro'm ftheidrum" 20 to said core. Once the bightisthus tucked into, 7 place underneath the incoming web, it andthelead-ing initial winding rotation; of saidcore and drum; members whereby to maintain suchifrictional holdingof said leading web portion, and'to-u'rge the latter into the form of a bight at said web-receiving side and adjacent to said nip area tolfaeilitatefntry, or: said leading web 'portion be;- ptween theeore-and drumrnembers.

,3 A web-winding machine according toclaim 2, said frollers beingcarried- ,sepai ately on membersiof said supporting means, 1 which, latter members are adjustably 'movable relatively to each-other to position the;two tucking rollers properlytoseparately engage said core and drum 1; 'C'MERVIN PrimqryExtzmin eri.

Claims (1)

1. IN WEB-WINDING APPARATUS COMPRISING A ROTATABLY DRIVEN, CYLINDRICAL, WINDING DRUM MEMBER, AND A REWIND CORE MEMBER SUPPORTED IN PARALLELISM WITH AND IN FRICTIONAL DRIVING RELATION TO SAID DRUM MEMBER TO DERIVE ROTATION THEREFROM TO DRAW ELONGATE WEB MATERIAL THROUGH A NIP AREA BETWEEN SAID DRUM AND CORE MEMBERS AT A WEB-RECEIVING SIDE THEREOF, AND TUCKING MEANS FOR PUSHING A LEADING WEB PORTION INTO SAID NIP AREA AT THE START OF A WINDING OPERATION; SAID TUCKING MEANS COMPRISING A PAIR OF SPACED, PARALLEL, TUCKING ROLLERS, MEANS SUPPORTING SAID ROLLERS AT SAID WEB-RECEIVING SIDE, IN PARALLELISM WITH SAID MEMBERS, FOR ENGAGEMENT OF SAID ROLLERS WITH SPACED PARTS OF SAID LEADING WEB PORTION WHICH REST UPON SAID MEMBERS; AND SAID ENGAGEMENT BEING SUFFICIENTLY FORCEFUL TO CAUSE THE TWO TUCKING ROLLERS TO BE DRIVEN OPPOSITELY BY ROTATION OF SAID MEMBERS TO PUSH WEB MATERIAL OF SAID LEADING WEB PORTION, LOCATED BETWEEN THE LATTER''S SAID SPACED PARTS, TOWARD AND INTO SAID NIP AREA.

Images