US1696329A - Glue-applying roll - Google Patents

Description

' w. A. SAATMAN GLUE APPLYING ROLL Filed March 12, 19726 I 2 Sheets-Sheet 1 HI I Dec. 25 1928.

W. A. SAATMAN GLUE APPLYING ROLL Filed March 12, 1926 2 Sheets-Sheet 2 Patented Dec. 25, 1928.

WALTER A. SAATMAN, OF ROSLYN, PENNSYLVANIA.

GLUE-APPLYING ROLL.

Application filed March 12, 1926. Serial No 94,150.

My invention relates to a glue roll for use in a machine for applying labels, wraps and the like.

A purpose of my invention 1s to avoid gradual filling of picker grooves at the squeeze roll and to avoid unevennesses 1n the coating of glue upon the glue roll ad acent the grooves at the points of application of the labels or wraps.

A further purpose is to have a glue'applying roll present a continuously unbroken longitudinal surface to the squeeze orv doctor roll a contlnuously unbroken surface to the incoming sheets or wraps to which glue is applied, and at the picker finger position to present accontou-r permitting easy insertion of the ends of the picker fingers beneath the wraps or labels carried upon the roll.

A further purpose is to provide a composite glue roll in which alternating sections of the roll revolve upon stationary pivots that are relatively eccentric.

A further purpose is to somount alternating sections which revolve together as to present substantially even surfaces to the squeeze roll and to incoming sheets or wraps and abruptl off-setting shoulders adjacent the picker fingers. t

A further purpose is to split up a glueapplying roll into alternate sections of which one set of sections comprises-the main roll and the other set may be mere discs of thickness suflicient to receive the picker fingers or occupy substantial parts of the length of the composite roll.v

Further purposes will appear in the specification and in the claims.

Of'the different forms of my invention I have selected for illustration two only selecting forms, however, that are practical and efficient in operation and which illustrate particularly well the principles involved. 1

Figure 1 is a transverse section showing myinvention applied to a lue roll.

Figures 2 and 3 are longitudinal sections illustrating somewhat different forms, either of which corresponds in transverse section to line 22 of Figure 1 and each'of which could equally be true of it.

Figure 4 is a section of Figure 2 taken upon the line 44.

Figures 5 and 6 are perspective views of different details shown in Figure 2.

Figure 7 is a perspective View of the form of disc seen in Figure 3.

Figure 8 is a broken plan View to reduced scale of the transfer and glue-applying rolls, illustrating recessed portions of the glue-applying roll covered by ridges on the transfer roll.

Figure 9 is a diagrammatic illustration.

Like numerals refer to like parts in all figures.

Describing in illustration and not in limitation, and referring to the drawings Referring to Figure l the glue-dipping roll. 15 turning upon shaft 16 and dipping into glue 17, delivers glue to a transfer roll 18, which in turn delivers it to the glue-applying roll 19. A squeeze or vdoctor roll 20 beneath and near the transfer roll, and turning in the direction of the arrow bears against the surface of the glue-applying roll and operates to spread the glue more evenly over the surface ofthe glue-applying roll.

In the past it has been usual to provide the glue-applying roll with spaced circumferential grooves to receive picker fingers 21 that pick off the glued wraps or labels from the roll 19. These grooves have been a cause of trouble in that they tend to fill with glue at the squeeze roll and oftenpresent to the incoming wraps or labels ridges of glue at the edges of the grooves.

I avoid the filling action at the squeeze roll 20 and avoid the ridges ofglue at the edges of the grooves where the wraps or labels engage the glue-applying roll by having the glue-applying roll present a substantially continuous longitudinal surface to the doctor or squeeze roll and desirably also a substantially unbroken longitudinal surface to the incomingwraps or labels and still provide a contour at the pickers that is well adopted to permit the points of the pickers to run in under the edges of the successive wraps or labels. 7

One way of securing this result with two different widths of band or intervening surface is shown and described herein.

By my invention I prevent glue from entering the intermediate spaces'between interrupted sections of the length of the glue applying roll-by reason of the action of the squeeze roll in evening out and removing glue from the surface of the glue applying roll, by filling these spaces of the glue applying roll at the line of application of the squeeze roll, and I may desirably prevent any initial entry of the glue into these intermediate spaces at the transfer roll by covering these spaces with suitable ridges upon the transfer roll.

I preferably fill the interrupted sections of the length of the glue applying roll at the point where the wrap comes in contact with the glue-applying roll so that the entire surface of the wrap may be glued, and I do not fill them to the surface of the roll at the pickers so that the pickers may lift the wraps by reaching under their appreaching forward edges.

It will be understood that the transfer of glue between the transfer roll 18 and the glue applying roll 19 is effected intermediate the ridges l7 and not or by the ridges 47, which serve to cover the grooves in the circumference of the applying roll and also serve to roughly gauge the thickness of gluereceived by the transfer roll from the dipping roll and subsequently delivered by the transfer roll to the applying roll. In practice the outer surfaces of the ridges are swept clean of glue by the engagement of these surfaces against the dipping roll and the intermediate surface of the transfer roll is loaded with glue to a depth somewhat greater than the thickness of the ridges.

It is the filling of the spaces between the interrupted sections of the glue-applying roll that is primarily sought, the surface of the filling means being. the only part used and for convenienceI call thissurface a band, independently of its length axially along the glue-applying roll. I am interested to a lesserextent in the particular mechanism by which this band is presented, illustrating a preferred form and realize that other forms could be used to accomplish the same result.

The band presented at the squeeze roll is the same band as that at the point at which the wraps engage the glue-applying roll which results in giving the band a diameter near that of the glue-applyingroll and adjusting its eccentricity so that its circumference intersects that of the glue roll at the two points in question while providing a recess or shoulder for the picker fingers at the picker position.

The drive is indicated diagrammatically as from a spur gear 22 upon the shaft 23 of the transfer roll meshing with spur 24 on the doctor roll which through spurs 25 and 26 drives the glue-applying roll 19 and through spurs 27 and 28 drives the glue dipping roll. 15.

I rotate the glue-applying roll 19 upon a stationary but angularly adjustable shaftfitl. Near each end of the glueap1 )lying roll, an eccentric sleeve 31is fastened rigidly upon the shaft 30 to form a stationary end bearing for a tubular member 32 which may or may not rotate' The member 32 carries disc members 33 that are preferably rigidly mounted upon it,

Theroll ""19 is composite, comprising a main portion 34 that rotates upon the stationary shaft 30 and the band carrying portions hero shown as disc portions 33 carried upon the tubular hub 32 and therefore rotating upon the stationary eccentric sleeves 3l that are fixed to the shaft I-lll.

The main portion 34 is shown us comprising a Spider journaled at 36 at its ends about the shaft and carrying fastened to its annular circumferential sections 37 that alternate with the band-carrying portions 33 mounted upon the tubular hub 32.

One of the journals 36 is shown as cost integral with the arms 38 of the spider, and the other is screw-fastened to these arms.

One of the journals is extended at 29 to carry a spur gear 26 by which the roll is driven.

The band-carrying disc sections 33 or 323 alternate with the roll sections 37 of the roll portion 34 and may be relatively very short in longitudinal length as compared to the roll sections 37 as indicated in Figure 2, or ma have a considerable length. In Figure 3 the length is substantially that best suited for spacing between adjacent picker fingers.

The roll sections 37 are moun ed upon the arms 38 of the spider to rotate with them, and in assembly are put on alternately with the discs 33 or 33.

The shaft- 30 isprovided with an arm ii at one end which is used for the double purpose of maintaining the shaft stationanv and of angularly adjusting its position in order to definitely set the position of the lines of intersection between the circumferences ofthe disc members 33 or 33 and the annular sections 37 mounted upon the spider.

The arm 41 is adjusted to position and is fastened in place in any suitable way, as by screw adjustment of a-bolt 41. i

The eccentricity of the two circumferences, and any difference in their radii, are adjusted so that the oircumferences intersect where the squeeze roll bears against the glue-applying roll and also where the wraps or labels 42 engage the glue-applying roll.

In the illustration the disc sections 33 and 33 carried upon the tubular hub 352 are of lesser diameter than the annular sections 37 fastening to the arm of the spider. This lets the lines of circumferential intersection be respectively at the linesiof application of the squceze roll and of engagement. with the wraps from the feed cylinder 4?, as seen in Figure 9. i

In Figure 1 these lines of application are angularly spaced consideral'ily less than 180' which makes it desirable to have the discs 33 of somewhat smaller diameter than the ltill main roll portion 37. Where the axial lengths of the band-carrying members are considerable either they or the roll members could be made of smaller diameter than the other.

The wraps or labels are fed to the glueapplying roll in any suitable manner as by a usual feed cylinder 43, from which they are stripped by stripper fingers 44 and guided by a suitable guide member to engage the surface of the glue-applying roll at 46, the spring of the wrap or label itself being used to firmly press the forwardly moving end of the wrap or label on to the surface of the. revolving glue-applying roll. Change in the angular position of the arm 41 will shiftthe position of the lines of intersection of the circumferences respectively centering upon the shaft 30 and the eccentric sleeve bearings 31. Normally after the proper position has been determined at which the lines of circumferential intersection are presented respectively to the squeeze roll and to theincoming wraps or labels there should be no need for any further adjustment.

It is evident that the surface of the glueapplying roll 19 presents at the glue transfer roll 18 recesses between successive circumferential portions 37 that are effective at this particular point as if they were grooves.

In Figure 8 Ishow annular ridges 47 upon the transfer roll which pick up but little glue from the dipping roll and, registering with the grooves, prevent glue from being delivered to the glue-applying roll from the transfer roll between, or closely adjacent 'to the edges of, the roll portions 37.

As'the glue-applying roll 19 revolves past the squeeze roll 20 the squeeze roll evens up the glue between the surfaces. As a result of the ridges 47 upon the transfer roll there ,is a lesser tendency for glue to get in between the interior filler members 33 and the roll portions 37. r I

In very many cases the use of these ridges upon the transferroll should be unnecessary.

In the form illustrated in Figure 2 the picker fingers 21 are applied to the glue roll within the spaces or recesses provided by individual discs, i. e., where these discs are recessed with respect to the sections 37 carried by the spider.

In effect the glue-applying roll in the form of Figure 2 presents groovesfor the picker fingers but presents an unbroken longituc inal surface against the squeeze roll and a glued unbroken longitudinal surface to receive the incoming wraps or labels.

In the form shown in Figure 3 the disc portions carried upon the tubular hub are lengthened a sufficient distance to receive a.

pair of picker fingers. These picker 21 are applied to the sunken disc sections adjacent to the annular portions 37 carried upon the spider.

It is, of course, obvious that both portions of the roll turn together, the arms 38 of the.

spider turningthe intermediate disc sections mounted upon the tubular hub 32. Also that despite the continuous rotation of both portions of the composite roll the lines of circumferential intersection between the different portions are always stationary, the.

one always against the rotating squeeze roll and the other always in position to receive the incoming wraps or labels.

Th pickerfingers are illustrated as delivering labels or wraps from the glue-applying roll to any suitable belt 4E8.

A usual glue drip pan 49 is shown beneatl the picker fingers.

Preferably there should be clearance radiallyinward between the discs 33 and the annular sections 37, as by inwardly chamfering off the discs 33 or the annular sections .37 or both, from near the out-er circumference as seen in Figures 2 and 3. In both of these figures it is the annular sections 37 that I have shown chamfered at 50.

The purpose of this clearance is to provide minimum surfaces for adhering glue between the discs and annular sections.

In operation the labels or wraps are delivered in usual way as by means of the feed cylinder 43.

Strippers 4M. and guide- 45 deliver the wraps or labels from the feed cylinder to the glue-applying roll where they engage the glue-applying roll along a portion longitudinally of unbroken contour by reason of being at one of. the circumferential intersections of the two relatively eccentric portions ofthe roll.

The labels are delivered from'the'g lue-applying roll by the picker fingers 21to any suitable conveyor 48. g

The trouble incident to any" action of the squeeze roll in filling the grooves of the picker fingers with glue is avoided because at the squeeze roll there are no grooves to be filled, the glue-applying roll presenting longitudinally'an unbroken contour againstthe revolving surface of the squeeze roll.

In view of my invention and disclosure modifications and variations to meet individual whimor particular need will doubtless become evident to others skilled in the art and I therefore claimall such in so'far as they fall Within the reasonable spirit and scope of my invention:

Having thus described my invention what I claim as new and desire to secure by Lettcrs Patent 1s 1. In a glue-applying. roll, a stationary shaft, eccentric bearings thereon, a spider havingjournals at each end adapted to turn on the shaft, a tubular hub. adapted to turn on the bearings, discs spaced along the hub and perforated to pass arms of the spider, I

annular roll sections mounted upon the arms of the spider and alternating along the length of the roll with the discs, and means for rotating the roll.

2. In gluing machines, the combination of a glue-applying roll, a squeeze rollandpiclrer fingers, the glue-applying roll presenting an unbroken longitudinal contour free from depressions against the squeeze roll and continuously presenting depressions for the picker fingers.

3. In gluing machinery, the combination of a glue-applying roll, mechanism for feeding wraps or labels thereto, and picker lingers, the glueapplying roll presenting an unbroken li'n'igitudinal contour free from depressions to the incoming wraps or labels and presenting depressions at the picker fingers. i i

4:. In gluing machinery, the combination of a glue-applying roll, a squeeze roll, mechanisinfor delivering wraps or labels to the glue-applying roll, and picker fingers, the glue-applying roll presenting an unbroken longitudinal contour free from depressions against the squeeze roll, presenting an un broken longitudinal contour against incoming wraps or labels, and presenting depressions at the picker fingers.

5. In gluing machinery, a glue roll com prising a stationary shaft, spaced eccentric sleeves mounted upon the shaft, a spider adapted to turn upon the shaft and having arms longitudinally of the roll, discs spaced along the roll perforated to pass the arms and adapted to turn upon the eccentric sleeves when the roll turns upon the shaft, annular circumferential sections mounted upon the spider and alternating with the discs along the length of the roll, means for angularly adjusting the positionof the eccentric sleeves and means for turning the a spider journaled on the shaft, annular circumferential roll sections spaced along the spider and fastened thereto, discs between the sections perforated to pass the arms of the spider and adapted to turn upon the hearings when the roll turns, a picker finger applied to each end of each disc, and means for rotating the roll.

8. In a gluing mechanism, a glue-applying roll havinggrooves at its surface, means for rotating the roll,,a shaft within the roll eccentric w th the axis of the roll rotatipn, and rings supported by the shaft and re tatable with the roll whereby the surface of the rings lies in line with the roll surface in one position angularly of the roll and is depressed with respect thereto in another position angularly.

9. In a gluing mechanism a glue-applying roll having grooves at its surface, means for rotating the roll, a shaft within the roll eccentric with the axis of the roll rotation and rings supported by the shaft and retatable with the roll whereby the surface of the rings lies in line with the roll surface in one position angularly of the roll and is depressed with respect thereto in another position angularly, a squeeze roll in the first position and pickers fitting within the grooves at the second position.

10. In a gluing mechanism a glucaipplying roll having grooves at its surface, means for rotating the roll, a shaftwithiu the roll eccentric with the axis of the roll rotation and rings supported by the shaft and rotatable with the roll whereby the surface of the rings lies in line with the roll surface in one position angularly of the roll and is depressed with respect thereto in another position angularly thereof, a glue transfer roll engaging the applying roll behind the one angular position and having ribs overlapping the grooves to transfer glue to the roll between the ribs and keep the edges of the grooves relatively clear from glue and pickers applied to the grooves at the second angular position. i Y

11. In gluing mechanism, a glue-applying roll having grooves at its surface, a means for rotating the roll, a shaft within the roll eccentric with the axis of the roll rotation and rings supported by the shaft and rotatable with the roll'whercby the surface of the rings lies in line with the roll surface in one position angularly of the roll and is depressed with respect thereto in another position angularly thereof, a glue transfer roll feeding the glue to the glue applying roll, a squeeze roll engaging the glue-applying roll and the rings in the first named angular position of the glue-applying roll, means for rotating the squeeze roll in a direction opposite to that of the glue-applying roll and pickers in the grooves at the second named angular position of the glue-applying roll.

12. In gluing mechanism, a glue-applying roll having grooves and rings fitting in the grooves and rotatable with the roll, means for mounting the roll and rings cccentrically so that the rings come flush with the surface of the roll at one position and lie beneath the surface of the roll at another position to make the grooves effective as such, means for feeding the glue to the glue-applying Ill) roll at the position where the rings are flush with it and pickers fitting into the grooves at another position.

13. In a gluing mechanism, a glue-applying roll having grooves and rings fitting in the grooves and rotatable with the roll, means for mounting the roll and rings eccentrically so that the rings come flush with the surface of the roll at two positions, means for feeding the glue to the glue-applying roll just before it reaches one of the two positions, and a squeeze roll engaging the glueapplying roll.

14. In gluing mechanism, a glue-applying roll having grooves and rings fitting in the grooves and rotatable with the roll, means for mounting the roll and rings eccentrically so that the rings come flush with the surface of the roll at one of the positions, means for feeding paper to the glue-applying roll at the second of the two positions and pickers within the grooves beyond the second po' sition to remove the paper from the glueapplying roll.

15. In a gluing mechanism a glue-applying roll having grooves therein, eccentric means for filling the grooves at one position and leaving the grooves effective at another position, a squeeze roll engaging the glue roll at the position where the grooves are filled and pickers Within the grooves at one position where they are effective as grooves 16. In gluing mechanism, a glue-applying roll continuously having spaces providing grooves between sections otherwise flush and rotary filling for the grooves operative at one position and leaving the grooves unfilled at another position, in combination wit-h means for applying glue to the roll near the first position, a doctor for removing the glue near the point of application and pickers fitting Within the grooves at the second po-. sition, v

17. In gluing mechanism, a glue-applying roll having grooves therein, means for transferring the glue to the roll, fillers for the grooves, means for moving the fillers to cause them to perform their filling function, operated by reason of rotation of the roll, a doctor engaging the roll and fillers to remove excess glue and pickers fitting into the grooves where they are not filled.

18. In gluing mechanism, a rotatable glueapplying roll having spaced grooves in its surface, bearings for the roll, means for rotating the roll, a shaft passing through the bearings for the roll, rings within the grooves 111 theroll, bearings for the rings eccentric to the bearings for the roll and connections between the rings and roll causing the rings to rotate with the roll, and to move 1n the grooves inwardly and outwardly by reason of the eccentricity of the respective bearings.

19. In gluing mechanism, a rotatable glueapp lying roll having spaced grooves in its bearings, and angularly adjustable means whereby the position of the axis of the bearings for the rings may be swung about the axis of the bearings for the roll.

20. In gluing mechanism, a glue-applying roll having grooves therein, means for transfer of glue to the roll, fillers for the grooves,-

means for mounting the fillers so as to fill the grooves substantially at the point of transfer to cause them to perform their fill- 1 ing function there While leaving the grooves open at another point, a doctor engaging the roll and fillers to remove excess glue and pickers fitting into the grooves where they are not filled.

, WALTER A. SAATMAN.

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