US1687607A - Slitting machine - Google Patents

Description

A. E. COLLINS SLITTING MACHINE Filed Dec. 14, 1926 6 Sheets-Sheet 1 In vfini'or:

Arthur E. Collins,

Get-'16, 1928.

A. E. COLLINS SLITTING MACHINE Filed Dec. 14, 1926 6 Sheets-Sheet 2 I LULQ Inventor:

' Ari/hurl: Collins,

- Oct. 16, 1928.

. A. E. COLLINS.

SLITTING MACHINE Filed Dec. 14, 1926 e She'et s-Sheet 4 lhueni'or:

EHLIHI I R v R w m w. an X x a 1 w. x n o mm W QM W An a.

Oct. 16, 1928. v

-A. E. COLLINS SLITTING MACHINE Filed Dec. 14, 1926 6 Sheets-Sheet 'fiIl/l/l/l/Id 1.2 4 14/1 Inueni'or:

v Acl'hurE Collins, by W W W Oct. 16, 1928.

, A. E. COLLINS SLITTING MACHINE Filed Dec. 14, 1926 ,6 Sheejas-Sheet 6 Indenior Arthur E Collins,

Patented Oct. 16, 1 928.

I E T Oran-(1151.:

.ABTHURE. COLLINS.- on IGUYAHOGA FALLS, OHIO, Assmnon TO THE M'ILIlERBLUBBEB COMPANY, on AKRON, on'iogn ooaronn'rioiv or omo.

SLITVTIVNG MACHINE. I

Application filed December type in which a plurality of spaced cutters,

operating against a rotating platen" roll, serve to divide a traveling web into a plurality of relatively narrow bands or strips which are thereupon wound up into individual rolls.

My improved machine is designed especiallyfor operating upon sheets of unvulcanized rubber, though not limited to such use, which is extremely sticky. or tacky.

Frequently it is desired to slit and re-wind webs of unvulcanized rubber calendered to between .007. and .010 inch in thickness divided into strips or ribbons of one-halter three-fourthsinch in width.

Such webs are dusted on one or both sides with a powdered material which will enable it to be wound in roll form without the overlying ccnvolutions adhering, but'great dithculty has been experiencedin slitting and re-winding any webs of unvulcanized rubber particularly of the character referred to.

One is that with slitting andre-winding j machines heretofore produced, so far as I am aware, while the cutters may penetrate through the stock to the platen roll, the cut edges immediately re-unite due. to the tacky nature of the rubber which makesit necessary to pull them apart along'the scored lines which interferes with the proper'functioning of the machine. 1.

Another objection isthat in priormachines the; strips when separated tend to 'interweave before reaching the re-winding rollers and again must be pulled apart and such separation is an extremely dillicult matter.

My said invention aims to avoidthesedifiiculties and to provide a machine by which a traveling web of unvulcanized rubber or rubberized fabric may be slit into a plurality of narrow ribbons, and these separated and rewoun'd on spools without injury .to

a the ribbons and without danger of'interweav ng or overlapping.

One of the principal objects of this invention is to collect and rewind the materialin such a way as to avoid stretching thematerial unduly which would resultin achange in width and to re-roll it insuch form that I it will remain smooth and free from wrinkles.

14, 1926. Serial n. 154,748.

The invention further a-ims to provide means whereby the successivewebs of supply stock may be readily joined so ,that the stock to be slit may be fed to the machine without interruption and in a continuous length. r

The inventionfurther aims to provide of such unwound 11 .ortiohs to fresh spools and their convenient placement'infre=winding position. i

Still another object is jttIPIOVldG a machine whichfwill be readily convertiblexfor cutting ribbons of different widthi Vith these andfother objects in view, the invention includes the novel features 'of construction and arrangement and combination of parts hereinafter described, what I regardas my invention bemgascerta ned andvdefinedby the claims appended hereto. p

What, I at present consider the preferred embodiment of the invention is illustrated "in the accompanying drawings, in'which Figurel is a planjview of themachine .with parts in section. t

Fig. 2yis a side elevation, partly broken away. i i

Fig. 3 is alongitudinal .verticalsection.

Fig. 4 is a transverse vertical section taken alongthe line ofthe platenroll. i

F igs. 5, 5 and. 53 are detail views. Fig. "6 is: a horizontal sectional detail showing the cutters in plan.

Figs. 7 and 8 are detail'views of the'iweb guide, in

spectively, r t H igs. 9 and 10 arei'espectively a planfand edge view of the strip guide 28. M

plan and transverse section. re-

section, of the spool guide; b

Fig. 12 isan end view of bar 31,,and Fig. 13 is a transverse vertical section.

.Figs. 14. to 17 inclusive are detail views incla-nand edge view or bars 34 and 35.

10 respect vely of plates 7 Referringlby reference characters to these drawings, lvindicatesja bed plate supported standards '1 and carrying frame members H .loo' Fig. 11" is a detailedelevation, partly in carries the platen roll 2 hereinafter described. This shaft is driven through a flexible coupling 3 and worm i'eductionunit l from the prime mover shaft 5, which may conveniently be the shaft of an electric motor shown conventionally at 5, said shaft 5 being provided with a. clutchty of any approved type, controlled through suitable connect-ions from treadle lever 6 (Fig. 2)

Cooperating with the platen roll 2 is a series ofcutters 7 of the blunt edge disc type which cooperate with the platen roll to sever the web'by a rolling contact, the cutting discs being forced into contact with the platen roll by spring means hereinafter described and being driven by their rolling contact therewith.

- At this point it may be in order to state that where it is desired to slit the material intoQthree-fourths inch ribbons T find it desirable to use ia web of six inches in widtlnwhereas if one-half inchribbons are desired, a. four inch web is. used, and the inachineis constructed so as to be readily convertible for operation on either width,

as will hereinafter appear.

The web is placed in the machine in roll fornuas indicated at 8, in four orsir; inch widthsand in order that'it may be fed to the cutters in cont nuous lengths, l preterably provide a movable carrierfor a plurality of stock rolls and means for joining the end of the wed drawn from an exhausted roll to the initial end of the web of a fresh roll. This comprises a slide member 9 mounted to move transversely in guide ways 10 carried bythe frame members 1 which slide member has upstanding brackets 10- provided with slotted upper ends forming seats 10 for a rod or skewer 11 passed through the aligned eyes of a. plurality of rolls 8. After the end of the web on one roll has been reached, it is detached from the spool and thrown over upon a cutter platen bar 12 (asindicated atmS Fig. 3) which'barghas a guiding groove 12 for a hand-cutter. The stock rolls 8 may comprise paper shells on which the four or six inch widths have been previously wound.

Slide 9 is now shifted to carry the exhausted spool out of feeding position and replace it with-a fresh: spool, the free end of the web of which islaid upon the web I end 8?. By passing a seaming cutter along the'groove 12, the twolwebsare seamed together and the surpliisends severed or removed in the manner well understood by those skilled in the art. The web of the fresh roll .is therefore supplied to the machine as a continuation of thepreceding roll, and this operation is continued indefinitely, it being understood that when the .rol ls have been exhausted the skeweror rod 11 is lifted out" and replaced by a skewer loaded with fresh rolls.

The roll beingdrawn upon for slitting is I either width of stock to the slitting mechanism. r

Retaining plates'15 and 13 overhang the guide channels and maintain the edges of the web in place, theadjacent edges 'of these plates being preferably arranged to con verge towards each other, as shown inFig. 7. The guide plate 18 and bed plate 1 both terminate short vof the breast of the stock roll so as to'allow for the accumulation of a material amount of slack, as indicated at 8". The presence of the slackloop insures an even feed ,of the web to the slitting mechanism.

This, as hereinbefore stated, comprises the platen] roll 2 and cutting discs 7 These latter must be capable of being tically movable fulcrum bar 18 operated'bycams 19 on: cam bar 19. Each bar carries on its end remote from the cutter a leaf spring 20 and all these springs, when the cutter carrying slide 15 is in place, terminate beneath a fixedcross bar 21 Raising the cutter holders presses the spring ends against the under side of bar '21 and hence forces the cutting discs. into contact with thegplaten roll with a. yielding. pressure individual to each cutter.

To provide for cutting thetwo widths of ribbons, I furnish two cutter slides 15, one with the cutters spaced one-half inch apart and the other with the three-fourths inch spacing, and vit is therefore only necessary to remove one slide and substitute the other to make the change. A locking screw 22 having a suitable milledhead' is provided for locking the slide in pro'per positiom-which is determined by the stop bar 2%. 5

Thence the web is led overv F or operating the cam shaft 19, I provide o its end with a cross lug 19 (Figs. 5 and 5) which" is adapted to slidelinto and out of engagement (in the movement of the cutter 1 mg upon the pulling orwinding rolls E29 and slide 15) with a corresponding key way or recess in a socket member 23* (Fig. l) carried by shaft 23 journaled in one of the frame members. This shaft carries a hand lever 24: whichhas a hand controlled pawl 24 cooperating with a toothed quadrant 25 for locking. the cams when the knives are in elevated position.

After a web of rubber has been passed through the cutting device, the ribbons formed thereby will be inclined to stick to- Y gether, as hereinbetore indicated. To eilect their separation, I provide a ribbon separat-or which comprises a bar 26 having upstanding smooth round pins ,or fingers 26 between which the ribbons pass, whereby said fingers act like the teeth of a comb.

This bar is made removable and replaceable,

so that by providing two bars with correspondingly spaced pins, either Width of ribbons may be separated.

After leaving the separating fingers 26, the ribbons pass around an idle roll 27 and are thence led to guides which accurately. alignthemwith the re-winding rolls. These guides are formed by a steel plate 28 having two sets ,of smooth polished slots 28 milled in its opposite faces, one set being onehalf inch in width, and the other threelaced,

plate 13. V

The plate is removable and reversibly held so that it may be readily inverted to eiiect the change oiwidth of guide. Small guide plates 28 are secured to the fences between the slots so as to provide nearly closedguides for the ribbons. This guide plate is located in close proximity to the re-winding mechanism, which will now be described. Y V v This comprlses a pair ofrolls 29 and 30 which are driven at a slightly greater surface speed than the platen roll 2, conveniently by a train of gearing from the platen roll shaft. The rolls 29 and 30 are provided with knurled or roughened surfaces to exert a pulling or turning effect on the ribbon rolls which are floatingly supported by the rolls 29 and 30. 'In order to properly position the ribbon rolls, I provide a ribbon roll bar or block 31 removably carried bythe cog ' entirely through in alignment with the frame members which in turn carries a plurality of upstanding ribbon roll spacing plates or bars 32.

Each of these spacers is provided with narrow substantially L-shaped grooves 32 and the upper part of each spacer is slotted groove or grooves. The ribbon rolls 83 are of awidth to pass between the spacers and are provided withsmall axial projections at each end to engage the L-shaped slotsin the spacers. p c

When the ribbon rolls are empty, and rest- 30, theseprojections will be in line with the lateral extensions of the L-shaped slots, so thatihey may be readily rolled into place.v

YVhenthe empty rolls have been put in position andthe ends of the ribbons atlixed or secured thereto, rotation of the rolls 29 and 30 causes the ribbons to be woundon' the spools ma manner that wlllbe obvious. As

soon as d any amount of ribbon has been wound on each spool, it will be raised until its projection is out of line 1 with the branchfslot and will consequently beheld in the machine, and such stock readily'attached toiresh spools, I provide the followmg means. 4 p V Adjacent the roll 29 Iprovide two adacent plates 34 and 35 (Figs. l and 3). Plate 34 has slots 3t across its face corresponding in widthto the width of ribbons It is also rebated along its edge, as indicated at gd 'to provide a guide fora cutting; kniie. Assuming that the spools have had the requisite amount of ribbons wound thereon and been lifted out by theskewe'r, they are then placed on plate 84 and rolled along the same to lay the ribbons in the slots after which the skewer is supported in the forked orslotted upper ends'of brackets Theoperator maynow readily sever all the ribbons by passing a suitable cutting knif along the rebated edge or guide 3st. The rolls of ribbons on the skewer may now be removedandf it will be found that the ends of the ribbon lying on plate 8d will be of the proper length to pass around a newset oi ribbon rolls in re-winding.

above referred to, which is 01"- identical constructio'n to plate 84, except that the slots I 35 are of the proper width to receive the spools or rolls 33 (usually of steel). One' '01- these rolls being dropped into each slot wit-h the spool contacting with roll 29, the free end of each ribbon will be of such length that it may be lifted up from plate 34 and carried over the top of thecorre 'sponding'spool and tucked into starting position, and each spool may be rolled up over roll 29 and dropped into the-space between the spacer plates in winding position.

Plates 84 and 35 are made removable and .replaceable for different widths of ribbon.

Having thus described my invention, What I claim is:

1. In a slitting machine, the combination withslitting means, of a carrier-for a plu rality of stock rolls, and means whereby said carrier may be adjusted transversely of the machine to bring successive rolls into operative position, and means associated therewith for: effecting the junction-of the end of the web of a fresh stock roll to the end of theweb of the preceding roll.

2.. .In a slitting machine, the combination with slitting means, of a carrier for a plurality of stock rolls, means whereby said carrier may be moved to bring the rolls successively into and out of operating position,v

anda cutter bar adjacent the operating position of the stock roll upon whlch the free ends of precedmg and succeedmg'webs may be superposed.

3. In a slitting machine, the combination 'with slitting means, of a carrier for a plurality of stock rolls, means whereby said carrier may be moved to bring the rolls suc-' cessively into and out of operating position, and a cutterv bar ad acent the operating position of the stock roll upon which the free ends of preceding and succeeding webs may be superposed, said-cutter bar havinga knife guide.

4. In a slitting machine, a platen roll, and cutter means cooperating therewith comprising a carrier, a plurality of cutters carried thereby with means for pressing them yieldingly against the platen roll, said carrier and cutter mechanism being removable and re placeable as a unit.

In a slitting machine, a mainframe, aplaten roll journaled therein, a cutter carrier movable into and out of the machine frame, cutter means supported from said carrier, .means also carried by said car- 7 rier whereby said cutters may be pressed into contact with the roll, including a shaft journaled 1n said carrier, an operatlng'member carried by the machine frame, and means whereby the insertion of the; carrier in the machine automatically,engages sald shaft with said operating means.

ment relative thereto, and means for raising and lowering said cutter bars whe the cutters are in operative pcsltionrelatlve to the cutting roll.

8. In a sheet stock slitting machine, a

mainframe, a driven platen roll journaledv herein, a plurality, of rotatable cutting discs cooperating therewith, means for supporting a stoclzroll, and aguidefor the sheet stockcomprising an elongated plate having a channel thereinof' a width corresponding to thewidth of the fabric, said channel being aligned with the .bight of the platen and cutting discs.

9. In a sheet stock slitting machine, a main frame, a driven platen roll journaled there-' in, a plurality of rotatable cutting discs cooperating therewith, means for supporting a. stock roll, and a guide for the sheet stock comprising an elongated plate having a channel therein of a width correspanding to the. width of the fabric, said channel being aligned with the bight of the platen and cutting discs, said plate having ledges overhanging the side edges of the channel and partially closing the same. p

In'testimony whereof I afiix my signature.

ARTHUR COLLINS.

ate with said platen roll and springs on the

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