US1925580A - Wind-up mechanism - Google Patents

Description

Sept. 5 1933.

K. E. ANDERSQN WIND-UP MECHANISM Filed Nov. 17, 1950 3 Sheets-Sheet l ATToRN EYs Sept. 5, 1933. K. E. ANDERSON 1,925,580

WIND-UP MECHANISM 'Filed Nov. 17 195o sheets-sheet 2 NVENTOR frm E. //vpmsan' ATTO RN EYS K. E. ANDERSQN WIND-UP MECHANISM Filed Nov. 17, 1930 Sheets-snee; 5

97 (ff/ ATTORNEYS Patented Sept. 5, 1933 UNITED STATES WIND-UP MECHANISM Karl E. Anderson, Lakewood, Ohio, asslgnor to` The Dobe'ckmun Company, Cleveland, Ohio, ya

corporation of Ohio Application November 17, I1930 Serial N0. 496,110

13 Claims. (Cl. 242-45) This invention relates to wind-up mechanism and more particularly to means for supplying slip sheet or liner between convolutions of ythe wound or reeled material, and to speed compensating means for the mechanism. l

The general object of the invention is to pro vide means for supplying slip sheet or liner between convolutions of the wound or reeledv maf terial in combination with automatic compensating means for controllingI and maintaining the tension substantially uniform in the wound or reeled material and in the slip sheet or liner. A further object of the invention resides in the provision of a relatively inexpensive, accurate and positive compensating wind-up mechanism in which the compensating means are controlled directly by Athe wound or unwound material;

It is also an object of the invention to provide means for mounting the reeling means and the slip sheet or liner roll so that the roll changes can be quickly and easily made.

The above and other objects of the invention are achieved by the apparatus illustrated in the accompanying drawings and described below, it

being understood that the invention is not limited to the exact details shown and described,

In the drawings:

Figure 1 is a side elevation of the apparatus embodying the invention;

Figure 2 is a plan view of the apparatus shown in Figure 1;

Figure 3 is a sectional view taken on line 3 3 of Figure 2;

Figure 4 is a sectional view taken on line 4--4 of Figure 1;

Figure 5 is a sectional view taken on line 5-5 of Figure4;

Figure 6 is a sectional view taken on line 6-6 of Figure 4; and

Figure 7 is an enlarged View taken on line 7-7 of Figure 2, but with parts in inoperative position.

The invention is particularly adapted for use with continuously printed webs of regenerated cellulcse, known in the trades as cellophane, and has, therefore, been described in conjunc tion therewith. The cellophane presents a smooth, non-absorbing surface and when continuously passed, inv web form, thru a roll printing press, special handling is necessitated to prevent the offsetting or smearing of the printed matter. Ithas been found that certain materials, which will'hereafter be called slip sheet,

will, if Wound up between the convolutions of the cellophane, prevent offsetting.

Referring to the drawings, the numeral 11 indicates a frame upon which is mounted a slip sheet roll 14 by any suitable means, which may include a pair of openpillow blocks 12 which serve to journal a shaft 13. Removably carried on the shaft 13 is the roll of slip sheet 14, which is wound up on a cardboard or similar core 15. The core 15 of the roll is centered and securedto the shaft 13 by suitable means, such as flanged hubs 16 and 17. One of the hubs is fixed as at 17 to the shaft 13, and the other may be feathered to` a wide collar 18, which is removably secured to the shaft 13 by a set screw 19. The collar 18 is threaded and provided with a nut 21, which can be run down against the hub to clamp the core 15 securely between the flanged hubs 16 and 17.

A tension must be applied to the slip sheet roll so thatl the slip sheet 1,4 \will be properly and smoothly fed without any tendency to overrun. To this end a stud pin 22 may be fixed to the frame 11 which will serve to pivotally sup-4 port a pair of curved' brake shoes 23 and 24, which are provided with any suitable friction means 25 that bear against a drum 26 secured to the shaft 13. In the embodiment of the invention shown, the drum 26 is grooved and the friction means are correspondingly wedgeshaped, which serves to prevent end play of the shaft 13. The end of the vshoe 24 is curved back and bifurcated as at 27 to pivotally receive a bell lever 28. 'I'he short arm of the bell lever 28 makes a slot and pin connection 29 with a rod 3.1 which extends thru the shoe 27. The end of the shoe 23 is also bifurcated to receive a bolt 32, which is pivotally secured to the end of the rod 31. A spring 33 and adjusting nuts 34 are preferably provided on the Abolt 32 which, together with the position of the bell lever v28, will control the frictional effect of the brake.

In order to reduce the force of the brake, as the roll of slip sheet 14 dminishesvin diameter, brackets 35 may be provided on the sides of the frame 11 to journal a shaft 36. The angular position of the shaft 36 is controlled directly by the size of the slip sheet roll by providing a pair of arms 37 which are fixed to the shaft 36, and which journal a shaft 38 uponvwhich is mounted a rubber roller 39 that rides directly on the slip sheet roll as shown. The shaft 36 is extended on the brake side of the frame and is provided with a crank arm 41, which crank arm is connected by an adjustable'link 42 with the long end of the bell lever 28.

From the slip sheet roll the slip sheet 14 is end 47 of the shaft 45. The squared end 47 ofl `the shaft is not inserted endwise in the socket 46, but is preferably moved in from the side, the socket being grooved as at 48 for this purpose. To hold the squared end 47 of the shaft in the socket, a collar 49 may be slida-bly carried on 4the socket 46 to which collar is secured a block 51, which slides in the groove 48 as shown in Figures 4 and 6. The extent of outward movement of the collar 49 may be limited by a pin and slot connection 52 and the collar may be releasably held in its outermost position by a spring detent 53.

Theshaft 44 is journaled in a bearing 54 secured to the frame 11, and is adapted to be rotated thru a gear secured to the shaft byv any suitable means (not shown).

The shaft 45 is journaledl in a pillow 56 secured to the frame 11, which pillow may be provided with a hinged cap 57 which is adapted to be removably clamped against the pillow by means of a pivotally mounted bolt 58 having a wing nut 59. The bolt 58 is received in a suitable slot in the hinged cap, as will be understood.

The freshly printed web cellophane is indicated by the numeral 61, and is adapted to be continuously passed from the printing means (not shown) over an idler roller 62 to the windup mechanism. f The cellophane web 61 and the slipv sheet 14 are wound together upon a cardboard or other suitable core 63, which is removably held on the shaft 45 by suitable means, includingflanged hubs 64 and 65. The

f flanged hub 64 is feathered to the shaft 45, and

is removagly held thereon by a nut 66 which cooperates with a threaded portion of 'the shaft 45 which, from the thread out to the end of the shaft, is reduced in diameter ior this purpose, as indicated in Figure 3. The flanged hub 64 is preferably adapted to be tightened up against a collar 67 or other similar means secured to the shaft 45.

The flanged hub is also feathered to the shaft 45, and may be limited in its inward movement by a collar 68, which collar is, however, so positioned as to be spaced from the hub during the operation of the apparatus. A collar 71 is secured to the shaft 45 adjacent the socket 46. Mounted on the shaft 45, between the collar 71 and the hub 65, is a yoke 72, having diametrically-opposite flattened sides 73. Journaled in suitable blocks 74 secured to the flattened sides 73 of the yoke 72 are rollers 75. Thrust bearings 76 and 77 are preferably mounted on the shaft 45 at each side of the yoke 72 so that thrust bearing 76 lies between the collar 71 and the yoke 72. The other thrust bearing 77 lies between the yoke 72 and a collar 78 which is slidably mounted on the shaft 45. A spring 79 is held between the collar 78 and the flanged hub 65.

Cooperating with the yoke 721s a wedge fork 81, which is formed with parallel inner sides 82 that make a sliding t with the flat sides 73 of the yoke. yThe wedge faces of the fork are indicated at 83, and are adapted to engage with the rollers 75. As illustrated in Figure 4, the roller journalling blocks 74 are cut away parallel to the faces 83 of the wedge fork 81.

The fork 81 may be slidably mounted on a rod 84 which is connected, preferably thru a turnbuckle 85, to an arm 86, secured to the shaft 36. In order to allow the wedge fork 81 to be moved out of the way, so that the axle 45 with the tube 63 can be iemoved'from the apparatus, suitable means are provided which .may include a collar 87, which is secured to the rod 84. The fork 81 can be connected by toggle linkage 88-89 with the collar 87, a handle 91 being provided on the toggle for operating purposes. The operative and inoperative positions of the fork 81 arev shown in Figures 1 `and 7 respectively.

Inorder to keep the following roller 39 in the inoperative dotted position shown in Figure 1, an arm 92 is secured to the shaft 36 to which y arm is pivotally fastened a rod 93, which rod is adapted to be moved, as shown in dotted lines, over to rest on a shelf 94 secured to the frame 11, thus holding the roller 39 in its inoperative position. When the roller 39 is in operating position the rod 93 hangs from the arm 92.

The operation of the device .is as follows:

Assuming the shaft 13 has been removed from the apparatus, the set screw 19 of the collar 18 is loosened and the collar 18, nut 21 and flanged hub 16 are removed from the shaft 13. A roll of slip sheet 14 wound on a tube 15, is now slipped over the shaft 13 and down against the flanged hub 17. The collar 18, nut 21 and flanged hub 16 can now be slipped over the shaft 13 and down against the tube 15, whereupon the set screw 19 is tightened, and the nut 2l is thereafter run down to tightly clamp the tube 15 of the slip sheet roll between the flanges 16 and 17.

With the'roller 39, bolt 32 and brake shoe 23 in their dotted positions as shown in Figure 1, the shaft '13 with the slip sheet roll mounted thereon, is laid in the pillows 12 on the frame l1, whereupon the brake shoe 23 can be swung up to its full line position and held hereat by vthe bolt 32, which is swung down and over the bifurcated end of the shoe 23, as shown in full lines in Figure 1. The means journaling the roller 39 is now raised and the rod 93 falls away from the shelf 94 so that the roller 39 can` be lowered down on top of the slip sheet roll.

Assuming the windup shaft 45 has been removed from the apparatus, the nut 66 and flanged hub 64 are removed from the shaft 45 and a tube 63 is placed thereon, after which the flanged hub and nut are returned to the shaft and thel nut 66 run down to clamp the hub 64 against the collar 67. The shaft 45 is now returned to the frame 11, the collar 49 on the socket 46 being in the retarded dotted position shown in Figure 4 during this operation. The square end 47 of the shaft 45 can thus slide into the end of the socket 46 thru the opening 48, after which the collar is moved back to its` full line position so that the opening 48 is closed by the block 51 secured to the collar 49. The spring detent 53 removably holds the collar in its locking position. The other end of the shaft 45 is receivedin the pillow 56, and

the cap 57 is thrown down and bolted in place l by the hinged bolt 58 and wing nut 59.

'Ihe handle 91 is operated to straighten out 'the toggle linkage 88 and 89, thus moving the wedge fork 81 down into cooperating relation with the yoke 7.2. It is necessary that the yoke 72 be turned exactly right so that the flat parallel inner sides 82 will slide over the flat sides 73 of the yoke. The slip sheet 14 is now brought by hand under the roller 43, and is wrapped about the tube 63, and the cellophane 61 is brought from the printing apparatus to and around the tube 63 between the convolutions of the slip sheet.

The apparatus Ais now ready to start operation, so the printing mechanism is started and the wind-up is driven thru the gear 55 by any suitable means, but preferably from the printi ing mechanism. The wind-up shaft 45 is over driven, that is, it is 'driven so that the tube 53 would have a greater surface speed than that at which the cellophane 61 is suppiied from the printing mechanism. There is thus slippage between the flanged hubs 64 and 65 and the tube 63. As the wind-up tube 63 revolves it will, of

- course, pull the slip sheet 14 and revolve the slip sheet roll and shaft 13 against the action ofthe brake 23-24.

As the slip sheet roll diminishes in size and the wind-up roll begins to build up, the roller 39 will follow the slip sheet roll, thus turning the shaft 36. As the shaft 36 slowly turns, the tension of the brake 23-24 von the slip sheet roll will gradually diminish, because the bell crank 28 is rocked thru link 42 and arm 41, to bring the slotand pin connectiony 29, 4between the rod 31 and the short arm of the bell crank 28, nearer the opposite shoe 23. At the sanie Atime the frictional drive between the wind-up tube 63 and flanged hubs 64 and '65 is increased, inasmuch as the wedge fork 81 is moved inwardly by the slow turning of the shaft 36, thru the agency of the arm 86, turnbuckle 85 and rod 84. As the `fork 81- moves inwardly,the wedge surfaces 83 contact with the rollers 75, which will force the yoke 72 in towards the flanged hub 65, vthus increasing the compression on the spring 79. This in turn forces the hub 65 over against the tube 63 with greater force to increase the frictional drive. ' Ihe thrust bearings 76 and 77 allow this operation to take place without interfering with the turning of the wind-up.

When the wind-up is completed for the roll of slip sheet employed, the printingmechanism and the wind-up drive are stopped. The bolt 32 is swung up to the dotted position shown in Fisure 1 to disengage from the bifurcated end of the brake shoe 23, which can then be dropped down as shown by dotted lines in the same-11gure.

shelf 94, thus holding the roller 39 and its supporting mechanism in the dotted inoperative po-l sition shown in Figure ,1. The wedge fork-81 is drawn back out of the way by breaking 'the toglgle 88-89 thru operating handle 91.

The axle 13 can now belifted from the pillows 12, and a new slip sheet roll mounted thereon as described above.

The Woundup roll is removed from the frame by pressing the spring detent 53, and sliding the collar 49 back to the dotted position shown in Figure 4. The operator should take care that.

the opening 48 in the socket 46 isV somewhere The roller 39 is lifted and the rod 93 isswung over so thatits lower end rests on the near the top when the apparatus stops, so that `the squared, end 47 and thus the shaft 45 does not fall when the collar 49 is slid back. The wing nut 59 is loosened, and the bolt 58 is dropped back 'so that the cap 57 can be thrown back. The shaft 45 with the rolled material thereon can now be lifted out; and the roll removed from the shaft by removing the nut 66 and hub 64. A new tube 63 is then mounted on the shaft 45, and the unit is replaced on the apparatus as describedabove, whereupon the entire operation can be repeated.

It will be seen that the initial tension upon the slip sheet roll can becontrolled by adjusting the nuts 34 on the bolt 32, and by adjusting the length of the link 42. In a like manner by adjusting the turnbuckie 85, the frictional force of the wind-up drive can be initially con,m trolled. These adjustments can also be made while the mechanism is in operation, but the parts have been designed so that except in extreme eases, this is not necessary inasmuch as the automatic mechanism will take care of all compensating adjustments.

While the compensating features of the invention have been particularly described in combination with a wind-up mechanism wherein a slip sheet or linerY is inserted between the convolutions of a wound-up web material, it will be seen that the compensatingl mechanism can be employed either in winding or unwinding a singleweb of material. In case of unwinding, the braking means and the compensating means shown therefor can be used. In winding operations, the following roller 39 with its mounting means need only be turned around to rest on the material being wound up.

Moreover it will be evident that while the invention has been described for use with freshly printed cellophane and slip sheet, that it can readily handle any web material and any liner.

It will be understood that in accordance with the patent statutes, a specic'embodiment only, of the invention has been described, and that the scope of the invention is defined inthe appended claims.

What is claimed is:

1. Apparatus for winding up web material with liner between' the convolutions thereof, including a wind-up shaft, means for journaling and Y rotating said shaft, means removably mounted on said shaft and having a frictional drive therewith upon which means the web material is wound, a liner roll, means rotatably and removably mounting saidv roll, braking means on said liner roll, and means for reducing the force `of the braking means and for simultaneously increasing the frictional drive between the sha-ft and the means upon which the web material is wound.

2. Apparatus for winding up web material with liner between the convolutions thereof, including means upon which the web material is wound,

means for rotating said first named means, a

frictional drive between said flrst named means and said rotating means, a liner roll, braking means on said liner roll, and means for increasing the frictional forcev of friction drive and for' simultaneously reducing the force of the 45 named means and said rotating means, a liner roll, braking means on said liner roll, and means for increasing the frictional force of friction drive and for simultaneously reducing the force ofthe braking means, said last-named means being automatically controlled by the diameter of the liner roll.

d. Apparatus for winding up web material with liner between the convolutions thereof, including means upon which the web material is wound, means for rotating said first named means, a frlctional drive between said rst named means and said rotating means, a liner roll, braking means on said liner roll, and means for increasing the frictional force of friction drive and for simultaneously reducing the force of the braking means, said last-named means being automatically controlled in direct proportion to the amount of web material wrapped on the first named means.

5. Apparatus for winding up web material with liner between the convolutions thereof, in

cluding means upon which the web material is wound, means for rotating said first named means, a frictional drive between, said first named means and said rotating means, means for supplying liner, braking means on "said liner supply, and means for increasing the frictional force of friction drive and for simultaneously reducing the force of the braking means.

, 6. Apparatus for winding up material with liner between the convolutions thereof, including means upon which the material is wound, means for rotating said first named means, a frictional drive between said first named means and said rotating means, a liner roll, braking means on said liner roll, and means for increasing the frictional force of friction drive and for simultaneously reducing the force of the braking means.

'7. In an apparatus of the class described, means upon which material may be rolled, said means including a journaled shaft, a removably fixed, flanged hub on said shaft, an oppositely facing flanged hub feathered on said shaft spaced from said first-named flanged hub, a tube carried between said hubs and frictionally driven thereby, means for rotating said shaft, a yoke rotatably mounted on said shaft, Ispring means between saidyoke `and said feathered hub, Wedge means for moving the yoke towards the `flanged hub to increase the frictional drive between the hubs and the tube, and means for automatically operating said wedge means in proportion to the material wound on said. material receiving means.

8. In apparatus of the class described, means upon which material may be rolled, said means including a journaled shaft, a removably fixed, flanged hub on said shaft, an oppositely facing flanged hub feathered on said shaft spaced from said first-named flanged hub, a tube carried between said hubs and frictionally driven thereby, means for rotating said shaft, a yoke rotatably mounted on said shaft, spring means between said yoke'and said feathered hub, and wedge means for moving the yoke towards the flanged hub to increase the frictional drive between the hubs and the tube.

9. ln apparatus of the class described, means upon which materiall may be rolled, said means including a journaled shaft, a fixed, flangedhub ieaaeec on said shaft, an oppitely facing flanged hub feathered on said shaft spaced from said flrst` named hanged hub, a tube carried between said hubs and frictlonally driven thereby, means for lrotating said shaft, a yoke mounted on said shaft, spring means between said yoke and said feathered hub, and means for moving the yoke towards the flanged hub to increase the frictional drive between the hubs and the tube.

l0. ln apparatus of the class described, means upon which material may be rolled, said means including a journaled shaft, a fixed, flanged hub on said shaft, an oppositely facing flanged hub feathered on said shaft spaced from said first# named flanged hub, a tube carried between said hubsrand frictionally driven thereby, means for rotating said shaft, a yoke mounted on said shaft, radially journaled rollers on said yoke, spring lmeans between said yoke and said feathered hub, wedge means for moving the yoke towards the flanged hub to increase the frictional drive between the hubs and rthe tube, said wedge means and yoke having a sliding, non-rotative fit.

il. In apparatus for -winding and unwinding web material, means upon which the web material is rolled, said means including a. transversely splitl shaft, one portion of saidshaft being relatively short and formed with a socket at itsinner endfthe other portion of said shaft i being relatively long, a tube upon which the web material is actually wound, said tube being removably supported on the long portion of the shaft, said long portion being formed at its inner end to fitl in the socket on said short portion, means for removably holding said long and short portions of said shaft together, means for non-removably journaling said short portion substantially throughout its length, and means for removably journaling said long portion at the outside of the tube.

12. fn apparatus for winding and unwinding web material, means upon which the web material is rolled, said means including a transversely split shaft, one portion of said shaft being relatively short, the other portion ci said shaft being relatively long, a tube upon which the web material is actually wound, saidv tube being removably supported on the long portion of the shaft, means for removably holding said long and short portions of said shaft together, means for journaling said short portion substantially throughout its length, and means for removably journaling said long portion at the outside of the tube.

13. In apparatus of the class described, means supporting a roll of web material, a brake drum on said roll supporting means, a pair of brake shoes pivotally supported in cooperating relation with said drum, an auxiliary shaft, a follower fixed to said auxiliary shaft and adapted to ride on the periphery of the roll of web material, a bell lever pivoted at its elbow onA the end of one of said brake shoes, means connecting one arm of the bell lever with the end of :fr n. snnmson.

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