US1579470A - Folding machine - Google Patents

Description

Ai'p s. COOPER FOLDING MACHINE v '4 shets-sheet 1 Original Filed Nov. 18. 1922- avweutoz J/Mo/y COOPEK.

4 Sheets-Sheet '5 Lil MON COOPER.-

April 6 1926; v

v s. COOPER FOLDING MACHINE m i Filed Nov. 1 s. 1922 f fq FV///////////fi7///// /////////////A/M.

April 6 1926.

s. COOPER FQLDING MACHINE Original Filed Nov. 18. 1922 4 Sheets-Sheet 4 awwntoz Juno/v CQOPER.

I To all whom 2'2- mdg concern:

Patented Apr. 6, 1926. H omreo rm SIMON fooornn,

' FOLDING EACHINE. I

Originalapplicationflled Nouember s, 1922; 'serial'in. 601,358; Divided February 5, ,1925.

Be it known that I, SIMON, Coornma citizen of the United-States and resident of Brooklyn, county of Kings, and State of.

"New York, have invented certain, new and useful Improvements in- Folding Machines, of which the following isa specification This invention relates"in-"general 110 folding mechanismand aims to provide mechanism' particularly adapted for handling flimsy materialsuch as tissue paper use i for example, for arment patterns.

The present invention isadivision of, my application Serial No. 601,858, filed Nov'emg ber 18, 1922, wherein I have disclosed a method and apparatus for" folding paper" patterns. The machine described in my former application isprovided with means for picking the uppermost sheet from a: multiplicity of piles and feeding such sheets to aii operative point where they are'cngaged'by a wrapping arbor which is arranged to be turned through a suflicient number of 'revolutionsto fold the sheets into along narrow pa cki Af ter the sheets are sofolded they-are stripped from the arbor and the folds are creased,

- then the sheets are fed'to another arbor which is adapted to fold the long pack in a direction to rightangles to thefirst; folds so as to wrap the sheets into a smaller or- J f s I Wrapping arbor and the pack wrapping ar The present inventionrelates particularly v to the means for performing the second.

shorter compact package.

Wrapping operationythat is to say, it is directed chiefly to mechanism for receiving" a long pack of previously folded sheets" and for folding said sheets in another direction tomake a shorter and more compact packa age.

eats; the ends (if th pack Qbih g In handling flimsy material-such the tissue paper from which garment .patterns are made, theproblem of pr'elyenting' have provided It m 1,51 1 PATENT OFFICE.

OF B-RooKnYn, ,NEW'YQRK; Assicnonizto arms:v HcGALL COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

Serial m. 6,945..

from whipping about in. a haphazard man ner and the, same'also overcomes the action of centrifugal force Which tends to separate the diiferentf'convolutions of the pack beingwrapped. j 7

The mechanism disclosed also includes" means for secliring a grip. onfa pack of folded sheets which is of such-a character and this application filled that it will not, slip under the influence, of

the] turning moVeme-ntof the arbor, yet will permit the wrapped sheets to he readily stripped from the arbor Without opening the gripping jaws. This .result is secured by providing a gripping device which kinks the endofthe Wrapped pack as will hereinafter more fully appear. Anembodiment of the intention is illustrated in, the accompanying drawings, in,

which F 1g; 1 is a yertical section through V a portion of a folding machine showing the. Wrapping arbor-andfrelated parts s Fig; 2 isa section on line 22 of Fig. l; Fig. 3 is a fragmentary,- detail viewed from the left of Fig." 1 and "shows parts sectioned off on, the line 33 thereof;

Fig. & is an enlargedview showing parts illustrated in the upper part of Fig. 1;

5-is a section on line 5 5 of Fig. a; Fig. 0 is a' somewhat diagrammatic top plan showing the relationship of the sheet 1' Fig. 7 is an enlarged view showing. details of construction of thepack wrapping arbor;

Fig. 8 is a liorizontalsection on'line 8'8 of Fig. V e 7 F'1g.9 1s a similar section on line 99. 0f Flg. 7; v

' Fig. l0-is a plan View of the parts shown in'Fig. illustrating the arbor clamp in, closed positionand a wrapped package of sheets thereon, the figure also showing the means fore'xerting a gentle tension'on the pack being Wrapped; -F '11; is a detail skeleton vicwshowing arts. which wouldappear ina" section taken perspectiv views of different parts of the 'p'ackwrap ping arbor; v Fig. 114 I a top .planjw'uexv of a portion of a folding machine showmgthepackwrappiffg'aiborand rel-awe age The machine disclosed in my former application of which this is a division illustrates a sheet wrapping arbor indicated diagrammatically at D, Fig. 6, which is adapted to receive a plurality of superimposed sheets and wrap them into a lon narrow pack. Means are provided for stripping these sheets from the arbor D and passing then into engagement with rollers 518 and 520 which crease the folds of the pack and feed them througl guides formed by spaced plates 57 1 and 576 into position tobe engaged by the jaws of the pack wrapping arbor G forming the subject matter of the present invention. The plates forming the passage-way are supported by brackets 578 which are secured to any suitable fixed part of the framework of the machine.

The pack-wrapping arbor as shown includes a vertical spindle 580 to the lower end of which is fastened a bevel gear 582 and to the upper end of which is secured a head 584, the head being secured by flathead screws 586 which pass through a flange 588 formed on the upper end of the spindle 580. The spindle 580 is formed with an axial here to' guide a stem 590 which is riveted to the underside of a stripper plate 592 which normally rests on the upper surface of the head 584;. This stripper plate is provided with openings 59%- and 596 to permit the free upward movement of the plate and also to permit the movement of the other parts to be presently described.

Rigidly secured to the head 58 1 and projecting upwardly through the openings 59st and 596 respectively of the stripper plate are uprights 598 and 600. The outer edges of these uprights are bevelled as at 602 and 604; so as to present a narrow edge around which the previously wrapped pack of sheets can be again wrapped or folded. The upright 598 is formed with a shoulder 606 and an inwardly extending fin 608. This upright forms the fixed jaw of the clamp for the pack-wrapping arbor. The movable jaw of the clamp comprises an upright 610 which is rigidly secured to a swinging arm 612 which is pivoted at 61% below the head 58%. A spring 616 is securedat one end to the arm 612 and at the other end to a pin 613 carried on the underside of the head 584: and tends to press. the jaw 610 toward the fixed jaw. The upright 610 is provided with a shoulder 618 and an inwardly extending fin 62. When the jaw is in its closed position the fin 608 of the fixed jaw and the [in 620 of the movable jaw are substantially parallel, and these members together with the upright 600 form a short narrow arbor around which the pack of pattern sheets can be wrapped so as to fold the same into a short compact package. 0 v

The a 612 is of curved erma ion as shown in plan in Fig. 9 so as to straddle the supporting bearing for the spindle 580 and thus permit of supporting the upright 610 substantially diametrically opposite the upright 600 when the clamp is in closed position. As shown in Fig. 9 the opening 594: in the stripper plate conforms in shape to the cross-section of that portion of the upright 602 which extends tl'ierethrough. Part of this opening as indicated at 595 is of arcuate shape so as to permit of slight angular movement of the upright 610 car ried by the arm 612. The-outer end of arm 612 carries a downwardly projecting pin 622 which is adapted to be struck at the proper time by the end 624 of a slidable rod 626 operating in fixed guides 628, shown in detail in Fig. 11. The slide-rod normally held in its retracted position by a spring 630, one end of which is anchored to the underside thereof and the opposite end of which is secured to an eye carried by the guide as shown. An arm 632 pivoted on a shaft 634 is connected by means of a link 636 with the slide and at the proper time the lower end of the arm is struck by a pin 638 secured to a disc 639 on shaft 138 so as to swing said arm to the left, as shown in Fig. 11, and thereby cause the slide 626 to strike the pin carried by the arm 612 and thus openthe movable jaw 610 of the arbor clamp. The length of the arm 632 is such that the pin 638 holds the jaw of the clamp open for a suflicient interval to permit the forward end of the folded pack to be fed between the jaws 602 and 610 of the arbor and after the pin 63S rides elf the end of the arm 632 the spring 616 will cause the jaw 610 to snap to the position shown in Fig. 10, thus securely clamping the end of the wrapped pack. it will be noticed that the shoulder portions 606 and 618 of the uprights are substantially the same width in plan so that when one jaw closes against the other they will nest together as shown in F 1g. 10 and will offset or kink the forward-end of the wrapped pack and therefore secure a good hold thereon. This offset grip makes it possible to wind the previously wrapped pack on this arbor without danger of the jaws losing their hold and permits'the use of a, comparatively light spring 616 for holding the movable jaw in closed position. It is desirable to use such a light spring because after the arbor has made a sufiicient number of revolutions to wrap the pack into apackage said package must be stripped from the arbor while the spring pressure is exerted thereon. Of course means could be provided for giving a slight open movement to the movable jaw at the'time the pack is stripped but this would add complication to the mechanism and the offset grip described securely holds the, end of the pack, during the Wrapping operation and yet permits the same to be stripped while the spring pressure is exerted on themovablejann p l I.

Means are provided for periodically r0-v rating the pack wrapping arbor G a sufii- Vcient number of revolutions to wrap the pack into. a short narrow package. Locking means are. also provided toholdathisarbor stationary while the" forward end of the pack of sheets is being transferred from the sheet-wrapping arbor D rte-the said packwrapping arbor G. And means are provided for stripping the completely wrapped package from the arbor Gand feeding-1t into the bite of pressure rollers which will crease the folds of thepackage anddeliver mounted to rotate loosely on the-shaft 642.

- rollers 662 which are adapted to engagerop- This sprocket is drivenby a chain65'6 from a. sprocket in another section of the machine,

not shown. 1

The shift lever 650 above referred to'i's pivoted at 660 to a lu'g secured to the-bear ing 476 and said lever carries a pair of posite sides of a cam rib 664 formed. on

the perip-hery'of a disc'666 which isrse'cured" to the shaft 486,; previously referred to.

c This cam ridge is shaped in such a way that itmcauses the shift lever 6501to periodically. move the clutch 649 into engagement with the pin on'the sprocket 5 64. A dwell portion of the cam permits the clutch to remain in engagement with the sprocket for asufiicient 1 length of time to permit the pack-wrapping arbor: to make enough" revolutions to completely fold the long" narrow packfstripped from the--arbor" D, into a shortcompact package. *After the package has been formed, cam 664 the clutch 648 and theredisengages by stops the rotation of the arbor G. When the arbor G stops its rotation; the aWs thferee of are located in approximate I alignment with the axis of rotation of the sheet-windland 4. o

ing arbor D, hence whenthe jaws are opened.

they will receive the Wrapped pack of sheets which are carried forward by the transfering mechanism.

It is important that the packewrapping arbor G be accurately'positioned and locked when it comes to rest.

To these ends a looking disc 668 having a plurality of. notches 67 0 formed therein is ii zedly secured to the shaft @642." Anni-m 672: is loosely pivoted'on- 670 or the locking disc. pulled upwardly by a spring 676 and it car'- -ries a cam roller 678 adapted to co-act with, a cam plate 680; carried on the face of the finger 674-adapted to engage the notches" The arm 672 is carn-484, WhichiS'secured to the shaft 486.

Theratioof the sprockets 658 and 654,- and of the gears 640 and-582 is such that one and one-quarter revolutions of the shaft 642*will' give an uneven number of revolutions to the spindle 580 so that when the arbor G comes to rest the movable jaw will always stop opposite to the uide passage formed by the plates- 574 and 576. There arefour notches 670 in the disc 668 and as the shaft 642 which rotates this dise'inakes one and one-quarter revolutions for each cycle of thema'chine it willbe understood that the finger 67 4 engages a different notch during each successive cycle; It will be further understood that'the'cam 680 is pro portioned so as to hold the finger out of engagement with the locking disc 668 for sufficient time for it to niake almost: one and onequ'arter revolutions whereupon I the roller 678 will ride from under cam surface and the spring 676 will snap the finger against'the locking disc in time to accurately position the shaft 642- after it has made the required one and one-quarter revolutions.

Of course other types oflocking devices such 4 as a Geneva movement or the like could be employedto perform this function.

ing finger 674 having previously been disengaged by the cam 680. Bevel gear 640' will now rotate gear 582 and the arbor spindle 580' through a suflicient numbenofarevolutions' to completely. w rap. the "pack into a short package as shown in Fig. '10., After this has taken place; the stripper plate 5994 will be lifted by mechanism to be presently described so; as to. lift: the package fromthe arbor G into the bite of a pair of opposed. pressure" rollers'68 2 and. 684 shown in Figs;

While the pack is being-wrapped on the arbor G itis; advantageous to exert aslight V tension on" the sides thereof to prevent centrifugal force from forcing the different convolutions ofathe pack outwardly. Forv this purpose I' have provided canvas belts 68'6Qand 688 which :aresecured at one end tovfixedbrid'les 690 and 692., These bridles v o e ffastenett tor right; pins 694 and; 69,6 1 shaft andmisaprevi 'ded; with: a best., shown in Fig- 6, outer ends- (lithe. 1

Lin

tension belts are secured to bridles 698 and 700 and springs 7 02 and 704:, yieldingly connect the last mentioned bridles to fixed hooks 706 and 708 carried by an upright rod 710,

Fig. 14. The tension belts 686 and 688 pass through a slot 712 formed in a standard 714- which is secured to the top plate 716. This top plate brid 'es a space between the intermediate frame 14 and the outboard 7 frame 12 and forms a supporting structure for the stripper mechanism and delivery mechanism to be presently described. The bearing for the pack-wrapping arbor also is carried by this supporting plate and comprises an integral nub or boss 718 through which the arbor spindle 580 extends as shown in Fig. 7.

As illustrated in Figs. 6 and 1.0, the belts .686 and 688 will bear on the outer surface of the pack as it is being wrapped on the arbor G, it being understood that the springs 702 and 704 will yield as the arbor rotates.

For lifting the stripper plate 592 a pair of oppositely disposed arms 720 and 722 are mounted on a rock shaft 724 and provided at their free ends with forked plates 726 and 728 which engage the outer portion of the circular stripper plate 592. The connection is such that the stripper plate can freely revolve with respect to the forked plates without exerting undue friction. In other words the plates are forked or slotted in such a way as to permit the stripper plate 592 to revolve freely.

After the pack has been completely wrapped into a package on the arbor G,

the shaft 724 is rocked (it being under stood that the arbor is locked stationary at this time by the finger 674 and disc 668) by means of an arm 730. This arm is connected to a link 732 which at its lower end is pivotally secured to a stud 73 carried by an arm 736 loosely pivoted on the shaft 77% as shown. On its free end the arm 736 carries a roller 7 88 which rides in a cam groove 740 formed in a cam 74-2 keyed or otherwise secured to the shaft 4-86.

After the pack of sheets has been completely wrapped into a compact package the cam 742 through the connection just described causes the arms 720 and 722 to lift the plate 592 to the position shown in Figs.

4: and 5. This action partially strips the wrapped package from arbor G and moves the upper end thereof into the bite of the rollers 682 and 68%. These rollers are supported by upright standards 74%, the roller 682 being carried byspring pressed bearing blocks 746 which are arranged to slide on the bearing surfaces 748 formed on the standards. When the plate 592 is lifted, the tension webs 686 and 688 are flexed as shown in Figs. 4: and 5 and the springs 702 and 704: are slightly stretched as ll e unde d The rollers 682 and 684i exert a pressure on the compact package and crease the folds which were made by the wrapping arbor G. These rollers then deliver the completely wrapped and creased package to the bite of a pair of opposed conveyor belts 750 and 752. At their inner ends these belts are guided over rollers 754: and 756 respectively and at their outer ends said belts are trained over similar rollers 758 and 760. A slack takeup roller 762 is provided for the belt 750 and a take-updevice including a rod 764: carried on a link 766 pivoted at 768 is provided to guide and take up the. slack of the belt 752. The rollers 760 and 758 are located in juxtaposition to an inclined discharge chute 770 which is adapted to receive the wrapped packages from the conveyor belts and guide them by gravity to a suitable station outside of the machine.

The drive for the rollers 756 to 760 inclusive is shown in. Fig. 1 and includes a sprocket 772 which is connected by means of a chain 7 7a with a sprocket 776 mounted on a shaft 778 carried by the standards 74-4. This shaft carries a spur gear 780 which meshes with a gear 782 secured to a shaft 784k, this shaft being the one that supports the above-mentioned rollers 756. This shaft also carries a gear 786 which meshes with a gear 788 carried on a shaft 790 which shaft supports the roller 754:. This gearing is so arranged that the conveyor belts will be driven in the proper direction as indicated by the arrows in Fig. 4i, to discharge the wrapped package from the machine. The drive for the pressure rollers 682 and 684 is from gear 786 through an idler 792 to gear 794 carried on the shaft 7 96 on which the pressure roller 684 is supported. Said gear 794- meshes with a gear 798 carried by shaft 800 which shaft supports the pressure roller 682. As indicated in Figs. 1 to 5 this gearing drives the pressure rollers in the proper direction to strip the wrapped package from the arbor G and deliver it to the conveyor belts 750 and 752. The gears 788 and 798 are offset from one another as indicated in Fig. 5 so as to avoid interference with oneanother as will be understood.

Though I have described with great particularity the details of the particular embodiment of the invention herein shown, it is not to be construed that I am limited thereto as changes in arrangement and various modifications may be made by those skilled in the art without departing from the invention as defined in the appended claims.

What I claim is: r

1. In a folding machine, a paclswrapping arbor comprising a rotary member having two spaced uprights secured thereto, a

clamp member pivotally secured to the rotary member and adapted toco-act with one of said uprights, means for holding the clamp closedwhile the arbor rotates and means for opening said clamp when the arbor is stationary. 1

2. In a folding machine, a pack-wrapping arbor comprising a rotary member having two diametrically opposed uprights secured lv thereto adapted to wrap a previously wrappednumber of sheets into -a flat package,

P a number of sheets wound fiatwise thereon' and flexible means anchored at both ends to. fixed supports and arranged to exert a gentle yielding tension on the flat pack being wrapped around saidspaced extensions.

5. A folding device including a member having spaced extensions'adapted to have a number of sheets wound fiatwise thereon and a flexible belt adapted to exert a gentlev tension on the sheets being wound around said extensions to confine the movement of the free ends of the sheets being wrapped and to compensate for the action of centrifvugal force which tends'to force the different convolutions of the pack'between said extensions outwardly. 7 6. A folding device including a rotary member having extensions adapted to -have a number of sheets woundfiatwise thereon and flexible belts yieldingly held between fixed supports on opposite sides of said ex-' tensions adapted to gently press against the opposite sides of the rotating pack of sheets 7. In a folding machine a'member adapted to have a pack of sheets wrapped thereon, means including a clutch and gearing for perodically rotating said member through a predetermined number of revolutions and then breaking the driving connection to permit said member'to dwell and means for locking the member against rotatlOITWllllG the clutch is dlsengaged.

8. In a folding machine a member adapted to have a packof sheets wrapped thereon, means for periodically rotating said .member through a predetermined number of revolutions and then breaking the driving connection to permit said member to dwell, means for locking the member against rotation during the dwell period and means movable legthwise of said member for stripping the wrapped pack of sheets there from while it is at rest.

9. In a folding machine a rotary element adapted to wrap a pack of previously wrapped or folded sheets into a smaller means package, said element carrying for kinking the end of the packso as to exert a grip prior 1 to the, rotary movement thereof which will not slip as the pack is being wound; yet will permit the same. to be. readily stripped endwise from said rotary element.

10. In a folding machine-a rotary member having spaced extensions around which va pack of sheets are adapted to .be'wrapped as the member turns, and a spring pressed member arranged to kink the end of the pack of sheets and to hold it in engagement with one of said extensions. 11. In a folding machine a pack wrapping arbor adapted to wrap an elongated packof previously folded or wrapped sheets into a shorter package, comprising. a rotatable spindle having a head carrying twospaced extensions around which the pack is adapted to be wrapped and means coactingwith-one of said extensions for gripping the the pack.

end of V 12. In 'a foldin'g machine a pack wrapping I arbor adapted to wrap pan elongated pack of previously folded or wrapped sheets into a shorter package, comprising a rotatable spindle having a head carrying longitudt nally extending members around which the pack is adapted'to be wrapped and a clamp between said members adapted'to kink one end of the pack and hold it in engagement" with onefof said members. I

In witness whereof, I have signed my name.

' SIMON COOPER.

hereunto

Images