US2651474A - Roll stand for flying splices - Google Patents

Description

p 1953 J. P. VAN DUSEN v 2,651,474

' ROLL STAND FOR FLYING SPLICES Filed Aug. 14, 1952 2 Sheets-Sheet 1 INVENTOR JAMES P. VAN DUSEN Bar /{y ATTORNEY Sept. 8, 1953 J. P. VAN DUSEN 2,

ROLL STAND FOR FLYING SPLICES Filed Aug. 14, 1952 2 Sheets-Sheet 2 I N VENTOR JAMES F." VAN DUSE N ATTORNEY Patented Sept. 8, 1953 UNITED STATES T James P. Van Dusen, Richmond, Va. Application August 14, 1952, Serial No. 304,248

' erally in use in bag factoriesto the performance of the improved method.

The above and other objects will be made clear from the following detailed description taken in connection with the annexed drawings,

in which:

Figure 1 is a side elevation view;

Figure 2 is a partial front elevation view of the improved apparatus; and

Figure 3 is a view similar'to Figure 1 showing a modification of the structure of the lower I right hand corner of Figure 1.

As noted in. my co'pending application aforesaid, heretofore when a flying splice has been attempted either on a bag machine or a printing press, it has been considered necessary to effect a bodily movement either of the exhausted roll or of the replenishing roll. The present invention contemplates fixed bearings in which either of two rolls may act as the replenishing roll.

Referring to the drawings, there is shown a side frame member [0, one of such members being provided on each side. At the top of the frame there is a notch l2 and adjacent the bottom of the frame a notch l4. The upper notch I2 is adapted to receive a shaft IS on which is centered a roll of paper l8. The notch I4 is adapted to receive the shaft of another roll of paper 22.

Keyed to the upper shaft [6 is a pinion 24 which meshes with a gear 26 mounted on a shaft 28. A brake drum 30 is similarly keyed to the shaft 28 and is contacted by a brake shoe 32 influenced on one side by a rod 34 and on the other side by a rod 36.

A pinion 38 is keyed to the lower shaft 20 and meshes with a gear 40 keyed to a shaft 42. A brake drum 44 is keyed to the shaft 42 and has bearing on a brake shoe 46. The brake shoe 46 is controlled on one side by a rod 48 and on the other side by a rod 50, the rods 48 and 50 being crossed. The rod 48 runs from the lower brake shoe 46 to a member 52 in which it is secured by adjustable nuts 54. The rod 34 runs from the upper brake shoe 32 to the opposite end of the member 52 where it is secured by adjustable nuts 56. The member 52 is mounted on an eccentric 58 on a shaft 60. The shaft 60 and the 5 Claims. (Cl. 242- 75) athird guide roll 96.

p 94 he substantially in the same horizontal plane. 'I'he axis of the roll 96 is parallel to the axes of eccentric 58 may be rotated by means of a handle 62. In the position illustrated in Figure 2 the member 52 is in its lowermost position, relieving tension on the lower brake shoe 46 and applying tension to the upp r brake shoe 32.

The rod 50 connects the opposite side of the lower brake shoe 46 to one arm 64 of a bell crank 66 mounted on a shaft 68. A rod 36 connects one end of the upper brake shoe 32 to the opposite arm 10 of the bell crank 66.

Bell crank 66 is keyed to the shaft 68 and spaced pairs of elongated arms 12 are similarly keyed to the shaft 68 and at their opposite ends carry a dancing roll 14. A pair of arms '16 are rotatably mounted on the shaft 18 of the dancing roll 14. The arms 16 pass through members which have rollers 82 bearing on one side of the arm 16 and a roller 84 bearing on the opposite side. mounted for free oscillation on a shaft 86 on which is also mounted a guide roll 88.

Let us assume that a web 90 is being drawn from the upper roll l8. It passes over a guide roll 92, thence over a second guide roll 94 and The axes of rolls 92 and rollsv 32 and 94 but lies in a lower horizontal plane. The web 90 then passes upwardly over a fixed guide roll 98 journaled in the frame I0, thence over the dancing roll 14 and thence over a guide roll [02 mounted on the shaft 86. Any change in tension in the web 90 will raise or lower the dancing roll 14 and thus will rock in one direction or another the bell crank 16 and as the tension increases and the dancing roll moves upwardly it will lift the rod 36 and re lieve tension on the brake band 32. Conceivably if the tension decreases the dancing roll 14 will drop, rock the bell crank 66 clockwise and thus through the rod 36 increases the tension in the brake band 32.

If the handle 62 be rotated to its lower position the brake band 32 will be disabled and the rocking of bell crank 66 will then throughout the rod 50 adjust the tension of the brake band 46 to maintain substantially constant tension in the web 90.

Assume now that the roll [8 is approaching exhaustion: a fresh roll 22 is placed with its shaft 20 in the lower slot 14 of the frame I0 and a certain amount of slack (from one to three feet) is run off as a web H0. The leading end of the web H0 is coated with adhesive and is fed over a metal feed'guide H2 adjacent the The members 88 areguide roll 92. After it is fed over the guide H2 it comes in contact with the trailing end of the web 90. The rolls 92, 94 and 96 form a sort of snubber which prevents sliding of one Web on the other. As the web H makes contact with the web 90, the operator with a knife, or other tool, cuts the web 90 adjacent the upper roll 13 and throws the handle 62 to its opposite position to disable the brake band 32 and to place the brake'ban'dflfiinoperation asza tensiongoverning means.

Similarly when the lower roll 22 approaches exhaustion a fresh roll I8 is placed with its shaft in the upper notch l2. A similaramomitiof slack is generated in the Web 9% and the left side of its leading edge is dobbed withadhesive. This leading end is then fed between: .the--web l.-li0 and the guide roll 92, at which time the web H0 is severed and the handle 82 again reversed.

The organization just described applies to a on'e iily bag. fiiioweveniitjs querfectlyapessihlerto nil-tee in tandem relat-ionship:as imanyiirames i l 0 may be desired- :to handleltwo, threerorzmore alphes.

Frames such as -l 0 are very' commonithroughout th'e bagmaking industry, Pier which 513132.301). pray the most -minorl alterationsare mecessarylztc ensible a fiyin'g splice to be mademmeaiisting bag ""mahines in epcordance with this inve'ntinn.

No partieular timing i's required .to generate-the necessary-slack i t he repleriishing web and to app-1 th'e #adhe'sive. Fhe operatori must Shave reasenablyagood timingrin theisevering of theiex- -nauste21 web--:an in reversa1 :zc'f ithe handleifit. @his? howeverfilias preved to be -operation easily defined-and mastered.

ln some cases where' the wbs to be spliced' are srret-"e'nly highly impervious but also very slick in miish,=e.g.,-'=moi'sture proof cellophaneit may be admissible toresort to-the expedient shown 'in Figure 3. *Here aroll lfiifl is journaledgenerally above the roll- Q2 in an extension I l-- of the frame -1-6. A secondrll l 32 is mounted i he eiitensi'on H generallyahove theroll fifi. r'i lafelt 1'34 runs fromthe-roll fl overthe ro'll ifl where it'uriderlies thewebor webs' b'eing spliced. It-then passes upwardly and cver th-e intermediate 1 611 94 5 where it overlies the web. Ihence itpasses downwardly '5 and 'arourid-ithe roll 9 dwhere it -ufidei'lies the -w'eb.

It then passes upwardly over the roll 32 and back to the roll l3,

At the lower left side of Figure 1 there are shown guide rolls I M and l I6 vertically separated with their axes parallel. At the right hand end of Figure 1 are shown guide rolls I I8 and 12!) similarly vertically spaced with their axes parallel. These provide for flexibility of the machine which may be placed, for example, between a printing press andta bagmachine. "Ther'dotte'dilines and arrows indicate the various routes by which the webs can be threaded.

I claim:

roll-stand comprising: a pair of spaced frame members, each of said frame members "having-vertically spaced notches to receive the '7 shafticf :a-supplyroll, one of said members having Lil iii)

a brake drum journaled adjacent each of said notchesfeach of said brake drums having means to engage the shaft of-a supply roll to be rotated therbypa bra -lie shoe for engagement with each plurality or juxtaposedjguide' rolls'having'their axes below and laterally removedfrorntheaxes of "said brakedrums.

'4. A"roll"stand"as set'forth in claim .3 including a" guide 'p'late"'leading to'the' first .o'f saidguide rolls.

"5. ATOll'fStELIld assetiforth' in claimi l including means to limit theoscillationof said lever.

"JAMESPIVAN DUSEN.

"No references cited.

Images