US1675863A - Unloading device for slitter and rewinding machines - Google Patents

Description

P. D. PARSONS UNLOADING DEVICE FOR SLITTER AND REWINING MACHINES Jgly 3, 192s.

Filed sept. 4', 1924 Q 7 '4' 23 lne/rior.

Patented July 3, 1928.

UNITED STATE-sI :PATENT oFFioE.

THILI D. PARSONS, #OF PHILADELPHI, PENNSYLVANIA., ASSIGNOR T0 lSCOTT TAPEB GOMPANY, A CORYQRATON F PENNSYLVANIA.

UN LOADIN G DEVICE .FOR SLITTER LND .REWINDING MACHINES.

Applicato'nl-ed ySepinber 4, 15824. Serial No. 735,771.

My invention relates to that class of machines known as sltters and rewinders, wherein a wide roll of paper or cardboard Ais slit into narrower width, but more par- Vi ticularly to the rewinding elements whereby the rewound paper or cardboard may be uickly and easily unloaded from the winding bars or mandrels.

Heretofore, in machines of this class, it l0 has been customary to fi-ictionally rotate rewinding bars to which the paper or cardboard strips are clamped, the bars being wholly removable from the slitting machine with the narrow paper or cardboard rolls attached, thereafter requiring transfer of the heavy metal bars and the paper or cardboard rolls attached to a convenient place where clamping means are released and the Vrolls removed. The bars are then replaced in the slitting machine for further rewinding operations.

The object of my invention is to eliminate all removable winding bars and to substitute in lieu thereof winding bars forming an attached part of the slitting machine and hinged or adjustably attached in such manner that their support and weight is carried by the machine at all times and vfrom which bars the narrow paper or light :cardboard :o rewound rolls may be readily stripped, the

bars thereafter moved into driving connection with the friction drive means and the fresh paper or cardboard strips from the slitting` cutters clamped to the bars for another rewinding operation.

By my improvements, no winding bars are required to be handled with the paper or light cardboard rolls and the latter are immediately dislodged as separate units and handled alone in baskets or otherwise as found convenient. In this manner, labor and time are saved and the cost of slitting and rewinding is materially reduced.

lVith these andv other objects in view, my invention consists of improvements applicable to a slitting and rewinding machine and combined therewith all as hereinafter fully disclosed and 4more particularly pointed out in the claims.

Referring to the drawings: Fig. 1 `is a side elevation of a slitting and rewinding machine embodying my improvements; Fig. 2 isa rear elevation of the rewindingvand unloading means embodying my invention; Fig. 3 is a plan view of one of the rewinding inandrels in operative position for being driyen; Fig. is 'a horizontal sectional view Of the samegFig. 5 is an enlarged view of a portion of Fig. '4; and Fig. 6 is a cross section of the mandrel showing how the paper strips are attached for rewinding.

2 is the main frame of the slitting machine and is provided with slitting means which may comprise two shafts with slitting cutting disks spaced along them andA cooperating in pairs or one set of such cutter disks rolling in contact with the surface of a drum, as commonly employed, such slitting means being shown at 3 and 4 and driven by a band. wheel 43 and belt 44. They may be driven in any other manner desired. 5 is a stand supported upon the floor tor carrying the winding bar or mandrel upon which the wide paper roll 6 to be slitted is wound and by which it is supported, the web being 4guided over and under drag or tension bars 7 and 9 and passing between guide rods 10 to the slitting cutter means 3 and 4. Thelbarv 9 is axially ad- ]ustable and provided with frames 8 in which the bar 7 is secured, so that an ad- Justment of the same may be made about the axis of the bar 9 to increase or decrease the drag or tension on the web for insuring it being under tension while passing through the cutters. The slitted paper provides a plurality of narrow strips 6a and Gb which are respectively guided over rods 11 and 12 and wound upon the separate mandrels 13 and 14so that a series of narrow rolls spaced apart are formed upon each mandrel (Fig. 2). These mandi-els are frictionally driven by a sprocket chain 42 which receives its motion from a sprocket wheel 42 and drives the sprocket wheels 38. The forcgoing description of the machine parts relate to constructions already known in slitting machines and I refer to them for the purpose of elucidating my improved windingand unloading means now to be specifically described. As the upper winding mandrel 13 and its operative parts are ident-ical with the lower mandrel 14 and its operative parts. it will suiiice to describe the details of one/of them and the description may be taken as applyingL to each of them. At one side of the machine is a fixed frame 151L having upper and lower bea- rings 17a and 18a respectively for the driving shafts 31, While at the other side is provided a hinged frame 15 movable about a vertical hinge joint 16 and having upper and lower bearings 17 and 18respectively for the upper and lower mandrels 13 and 14. Referring more particularly to Fig. 4, the mandrel 14 is cylindrical andl provided longitudinally with a' slot whose -bottom is inclined, being deepest at its free end and shallowest adjacent to its supported end. This mandrel is loosely journaled in the bearing 18 and capable of not only being rotated but also shifted longitudinally, this latter being secured by a pinion 2() on a vertical shaft 21, the teeth 'thereof engaging annular grooves 19 about the journal portion ofthe mandrel. As these grooves are each in separate parallel planes at right angles to the axis of the mandrel,

4the/latter may 'rotate freelywithout changing its position of longitudinal adjustment provided for by the pinion 20. 'lYhen theV ymandrel is-moved to theV right 1n its bearing 18, its free end is moved out of engagement with thedriving head 32 on the driving stub shaft 31 j ournaled in'iixed bearings This stub shaft S1 is provided with a flanged hub 37 anda sliding` sleeve 39 vkeyed to rotatewith the shaft and carrying the freely rotatable sprocket wheel 38. Between the sprocket wheel and the flanged hub is an'annular friction disk 40 which is Vclamped between said parts under the application of spring pressure yfroma spring 41 pressing upon the vsleeve and adjustable by a nut 41a. This provides a friction drive for the mandrel to compensate for-the varying diameters of the paper rolls as they are vbeing wound, the drive giving ra sufficient speed for the smallest diameter of the rolls and permitting` slipping to compensate for all greater diameters of the roll, the friction always beingsuilicient to insure tight winding against the resistance ofthe drag effectof the bars ,7 andv 9, etc. lVhen the mandrel is shifted into engagement with the drivinghead 32, a space 24 is provided Vin the mandrel 14 is a long clamping bar 28 which is sufliciently loose to enable it to Lclamp -the endsy of the paper strips down into the groove orislot 27, as shown in Vlfiglj.V This clamping bar is tapered to l correspond to the taper of the slot and for the purpose of permitting easy withdrawal Vwhen unloading the mandrels of the wound rolls. The end of the clamping bar 28 is beveled at 30 to provide an undercut hold on the end of the slot (Fig. 4)k at its shallow end andthe other or larger end of the bar is formed with an enlarged head having a hole 29 and a recess or notch for engaging a spring actuated catch 33 in the end of the driving head 32 and forced into engaging position by a spring 34 held in position by a plug 35"(Fig. 5). In securing thepaper strip ends to the mandrel, they are laid across it over the slot 27, the bar 28'is then placed upon them forcing them into the slot, the nose of the bar engages the undercut end of the slot as at 30 andthe head end is forced in and engages the spring catch 33 and thus retained. Furthermore, the head end of theclamping bar 28 is received in a `radial slot 32FL in thehead 32 and forms locking engagement therewith by which the mandrel is positively rotated.

Assuming that the narrow paper strips are alternately laid over the upper mandrel 13 and lower mandrel 14 and the said mandrels in winding engagement with Ysocket heads 32 of the winding shafts 31, the clamping bars 28 Vare then inserted into the slots 27, clamping the ends of the paper strips therein and the head ends ofthe bars are pressed into the slots 32"L until they7V are locked in position by the spring actuated catches The machine is then put into slittingY and winding operation and continued in operation until the roll of paper 6 has been slit and rewound into a plurality of narrow rolls 6 and 6b on the respective mandrels, as indi- ,ated by dotted lines in Fig. 2. lVhenthis is done, the ends of the narrowstrips of the respective rolls are each ypasted down to Vavoid unwinding-during transportation or further handling preliminary to use in making other articles.

f To unload the mandrels of the numerous rolls of paperr (or cardboard) thus formed, the following procedure is had: The locking Vdogs 25 are lifted and thrown back and the shaft 21 through a wrench applied to its head 22 is rotated a Vpartial revolution to correspondingly rotateV the gears 2O and thereby move the mandrels 13 and 14 to the right (Fig. 2) to disengage them andY their clampingbars 28 from the socket heads 32. Theframe 15 with the loaded mandrels is then swung around tothe rear (as indicated 'nient `with the winding socket-'head 32, the paper .ends .clamped to thei'mandrels and slitting` and winding proceeded with as before.

It will be seen that the important feature ot the invention resides in having the mandrels hinged or otherwise',carriedfby the' machine so .that they Areina-in as part of the machine, yet permit the wound rolls to be removed longitudinally from theirends.

it will now be apparent that I. have devised a novel and useful construction which embodies the-features of advantage enumer- -ated Vas desirable, and while. I have in the as the saine are susceptible of 'modiiication in 'various particulars without departing from the spirit or scope ofthe invention.

Having now described my invention, what l claim as new and desire to secure by VLetters Patent is 1 l. A. winding and unloading means for a slitting machine, comprising a main traine,

a rotatable winding inandreh a hinged trame in which the mandrel is journaled and by which it is hingedly connected to the main traine, said hinge having an upright axis positioned to the rear of .the aXis of the mandrel and its bearing whereby one end o't the mandrel may be treed and swung Ytrom winding position to an unloading position while the mandrel is supported by the hinged trame, and operating means cooperating with the tree end ot the mandrel for rotating it when swung into winding position.

2. The invention according to claim l, wherein further, the hinged frame carrying the mandrel is hinged to the main frame on a long vertical axis located at a considerable distance from the axis of the mandrel and in which hinged frame the mandrel is wholly supported when swung into unloading position.

3. A winding and unloading means for a slitting machine, comprising a main frame, a rotatable winding mandrel, a frame in which the mandrel is journaled hinged to the main frame whereby one end of the mandrel maybe swung from winding position to unloading position so that the rolls of wound material may be withdrawn from one end of the mandrel while the other end is supported by the hinged frame, and operating means for rotating the mandrel when swung into winding position, and wherein further, the hinged connection of the mandrel with the main trame of the machine comprises a iti-aine hinged to the main trame on a substantially upright. aXis and in which the mandrel is journaled for rotation and with capacity for longitudinal adjustment 4for insuring driving engagement with the operating means for rotating t-he mandrel, and wherein also means are provided or moving the mandrel longitudinally in its journal bearing.

t. The invention according to claim 3, and wherein'also the means for producing the longitudinal adjustment consists of a lgear carried on the. hinged frame and engaging a plurality .of parallel annular ribs and grooves on the mandrel, said parts so constructed i that the mandrel may rotate freely while in adjust-ing engagement with the gear.

Q .A winding and unloading means for a slitting machine, Acomprising a main frame, a rotatable winding mandrel, a frame in which the mandrel is journaled hinged to the main iframe whereby one end of the inandrel may be swung from winding position to unloading' position sothat the rolls of wound material may be withdrawn from one end o't the mandrel while the other end is supported by the hinged frame, and operating means for rotating the mandrel when swung into winding position, and wherein further, the hinged frame on which the inandi'el is ouinaled is hinged to the main frame on a substantially upright aXis and in which frame the mandrel is journaled tor rotation with capacity for longitudinal adjust-ment thereon for insuring driving engagement with the operating means for rotating the mandrel, means for moving the mandrel longitudinally, and means are provided for locking the mandrel against longitudinal iriovement when in engagement wit-h the operating means.

Gw The invention according to claim 5, wherein also means are provided for siiiiultaneously clamping the material to the mandrel when locking the mandrel in driving engagement with the operating means, said means including a tapered slot on the mandrel and a tapered bar fitting into the slot and locking means to retain the bar in position during the rotation of the mandrel.

7. Iflie invention according to claim 5, and wherein also, the operating means is provided with a rotatable socket head in which the end of the mandrel is received, and a clamping bar is detachably arranged in a slot along the mandrel for clamping the material to be wound to the mandrel, said har also engaging a slot in the socket head and bv which a. driving connection is made. u

8. A winding and unloading means for a slitting machine, comprising a main traine, a rotatable winding mandrel, a frame in which the mandrel is journaled hinged to the main traine whereby one end of the mandrel may be swung from Winding position to unloading position so that the rolls of wound material may be withdrawn from i one end yoi the mandrel while the other end is supported by the hinged frame, and operfurther; the voperating means is arranged adjacent to the free end of the mandrel when in .winding position and having means for [,centrallzing'the free end ofthe mandrel 'for rotation and Jfor :trictionally driving the said mandrel.

9. VThe invention according to claim 8, wherein further, means are provided for causingthe mandrel to be adjusted longitudinally of its axis on the hinging means by which it is hinged to the main frame, wherebythe mandrel is moved into and out of locking engagement with the operating means when in winding position.

10. .A winding and unloading means Jrior a slitting machine consisting of a. frame hinged to the machine on a vertical axis, a mandrel having one end j ournaled in said hinged frame and with provision for longitudinal adjustment thereon,v a rotating driving shaft in alinement with the mandrel when adjusted to winding position and engaging the other end of the mandrel, means for providing a Y relative longitudinal adjustment of the mandrel with respect tothe driving shaft, and engaging means for locking the driving shaft and mandrel in driving relation during winding.

llqThe invention according to claim l0,

wherein further, the mandrel is slotted longitudinally with a tapereddepth of slot and a removable tapered clamping bar is fitted toV Awound and also extended into engagement with the drivingshaft wherebya rotary driving connection is made between the shaft vand end or" the mandrel most distant from its hinged end.

13; In a winding and unloading means for a slitting machine, the combination of two winding mandrels, a hinged frame in which the two mandrels are journaled and their weight supported, two frictionally driven shafts for respectively rotating the mandrels at the same speeds, means for shifting the mandrels longitudinally7 into and out of operative engagement with the frictionally driven shafts, and means common to both mandrels for simultaneously operating the means for shifting the mandrels, whereby they are simultaneously moved into and out of' operative engagement with-the frictionally driven shafts.

In testimony of which invention, I hereunto set my hand.

PHILIP D. PARSONS.

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