US2004045A - Sliver roll forming machine - Google Patents

Description

5 Sheets-Sheet l Filed Dec.

Filed Dec.2l, 1933 5 Sheets-SheetI 2 Fl Q. la"

June 4, 1935.' G. FRASER ET 4A1. Y 2,004,045

` SLIVER ROLL FORMING MACHINE Filed Deo. 2l, 1955 SSheets-Sheet 5 Patented June 4, `1935 UNITED STATE.

SLIVER ROLL FORIWING MACHINE Gordon Fraser, INorman Fraser, and John Fraser," I l Arbrcath, Angus, Scotland I Application December 21,1933, Serial No. 703,474 I `In Great Britain December 28, 1932 I 8 Claims. (Cil. 19-v-158) This vinventionrelates to.l sliver roll-forming machines of the type in which the sliver rolls are built upon' a sectional arbor between a pair of pivoted cheek plates under the action of a frictional .pressure roller positioned between the cheek plates. 5 I I .The sectional arbor comprises a pair,` of arbor 'sections each .retractable endwise, and' carried vone by each cheek plate. I

The `cheek plates are relatively fixed. and are larranged to swing about a horizontal axis remote fromthe sectional arbor, .being preferably pivoted on a fixedhorizontal shaft. n

During roll-building the `Vcheek plates rise in opposition to frictional restraint underthe control of an` operative, whereby t0 impart the requisite pressure to the roll. I f According to the invention, for exercising frictional restraint on the movement of the' cheek plates there are provided a segment member concentric with the pivotal axis of the cheek plates and at least one friction member engageable with said segment member, one `of said members being ilxed and the other movable with the cheek plates.

A sliver roll-forming machine constructed in accordance with the present invention is illustrated in the accompanying drawings in which Figs. l and la together constitute a side elevation, Fig. 2 a fragmentary section on the line a-d of Fig. 1 drawn to a largerscale, and Fig. 3 a fragmentary elevation showing differential sliver guide-traversing mechanism.

-The sliver roll-forming machine shown comprises a horizontally spaced pair of cheek plates I of general triangular shape in elevation mounted to perform pivotal rising and falling move- 'ments about the axis of a fixed horizontal shaft 2 extending transversely of the 'cheek plates and penetrating one corner of )each cheek plate l. 3 denotes a tubular distance piecesurrounding the shaft 2 and serving rigidly tointerconnect the .cheek plates I in spaced relation. 4Sliver rolls are built` up between the cheek plates I on axially ymovable rotatable arbor sections 4, 4a mounted in coaxial relation in the cheek plates I, under the action of av frictional pressure roller 5` rotatable between'the cheek .plates I and secured on. amain drive shaft Ii disposed below and parallel with the shaft 2.

Each arbor section 4 or 4a is hollow and is rotatably mounted on ball bearings 1 mounted on a stud shaft 8 carried by a sleeve 9 rotatably? and axially. movable in a boss l0 of the respective cheek plate I. Each sleeve 9 is formed with a peripheral cam groove I I into which projects the `plates. I are in their` lowermost position with the tail, I2 ofl a pin I3 screw-threaded radially into the boss I0,"the arrangement being such that rotational movement of the sleeve 9 withinthe limits defined by the ends ofthe slotrI I is accompanied by axial displacement of the sleeve 9 and 55 of the respective arbor'section 4 or 4a; effecting retraction of the arbor sections 4, 4a to an extent sufficient to permit ejection of a completedfsliver roll from between the cheek plates I.

The cam grooves Il are provided with dwelly portions which ensure that the' arbor sections 4, 42L are securely held in operative position during roll-building. v

The two arbor sections 4, 4a are adapted to be advanced 'and withdrawn simultaneously, being operatively interconnected by' means including arms i4, I4a, respectively, attached oneI tothe outer end cf each sleeve 9, links I5, I5a connecting the arrnsl I4, I4a to arms' I6, ISH securedl on opposite ends of a rock shaft I'I journalled in bear# ings in the cheek plates I. The arm I4 which is `disposed to the left of an operative standing in front of and facingthe machineis extended to present a manuallyoperable lever I8 adapted to be rocked inthe directionsindicated by the arrows A and B-(Fig. l) whereby to effect withdrawal and advance, respectivelyjofl the arbor sections 4, 4a. v l "1 As isunderstood, when starting-up, the cheek 0 arbor sections 4,4a'restin`g on,` and frictionally driven by, the pressure roller 5. so that 'sliverfentrained by the arbor Vsections is'built up thereon under the action of the pressureroller 5the arbor sections and cheek plates rising as the rollbuilding operation progresses.

To impart the requisite building-up pressure to thel sliver roll`, restraintis exercised by the operative against `the' rising movement ofthe cheek plates by means including opposed arcuate frictionvpads I9, 2 0 carried by the cheek platel seen in Fig. l and frictionally engaging opposed arcuate faces presented bya xed segment `2| concentric with the `shaft 2 and anchored to the adjacent slidegable 22 of the machine. The fric- 45' tion padsl, ZBfare attached to` shoes Isa, 20a slidably guided in the cheek plate between guides 2Gb, `2lib for movement'radially of the shaft 2 and presenting a cam face 28 engageable by said inner end of the pin 24. As will readily be understood, the 'arrangement is such that downward eiort exercised by the operative on the lever 26 during roll-building will cause the inner end of the pin 24 forcibly tol engage the cam face 28 and press the shoes Illa, 2|!a towards one another and the padsA I9, thereon into frictional engagement with the segment 2| and thus provide the requisite drag against the ascent of the cheek plates and arbor sections. IIhe weight of the lever 26 ex,-

ercises sufiicient frictional restraint on the seg? ment 2| to prevent descent of thecheek plates when the lever 26 is released by the operative on completion of the sliverl roll'.

Ejection of a completed roll indicated at 29 and re-starting of the machine areeiected by withdrawing the arbor-sections 4,4a by manipulation of the lever |8, removing the roll 29 from between the cheek plates to a roll-supporting bar 30 'located in front of the pressure rollerI 5, vrestoring the arbor sections 4, 4a to operative position, permitting the cheek plates to descend vuntil the arbor sections contactwith the pressure roller 5 and nip lthe sliver end, removing the completed sliver roll 29 tofbreak the sliver end, Yand wrapping said sliver endl around .the arbor sections 4, 4a for a re-start.

To permit the cheek plates to be raised or lowered manually in any contingency, handles 41 may be provided thereon.

`For traversing the sliver during the roll-building operation there is provided a sliver guide 3| carried by a horizontal tube Afender-cam 33 unitary with the cheek plate structure. To impart traverse movements to the sliverguide 3|, the tube 32 is adapted to be reciprocated endwiseby means of differential driving mechanism (Fig. 3) including a rotary'driving disc 34 frictionally engaged by a friction wheel 35 disposed at right angles to the disc 34 and feathered on a shaft'36 for movement ra-` dially of the disc 34 under the control of a cam 31 moving with the cheek plate structure. The cam 31 effects translatory movements of the wheel 35 through the medium of a bell-crank 1ever pivoted at 3B, one arm 39 of said lever being provided with a follower 40 engageable by the cam 37 and the lother arm 4| of said lever being operatively connected tothe wheel 35. Secured on one end of the shaft 36 is a disc 42 carrying a crank pin y43 which, in the rotation of the shaft 36, imparts reciprocatory motion to a spindle 44 slidably mounted at the rear of the side gables of the machine, the crank pin 43 being operatively connected to one end of the spindle 441 by means of a link'45. The -reciprocatory motion of the spindle 444 is transmitted to the sliver guidecarrying tube 32 by `means of a bar 46 the upper end 0f which is rigidly attached -to the tube 32 andthe lower end of which is pivotallylconnected to the spindle 44 `by the pin 46 in such Wise that, while the bar 46 is free to pivot about the axis of the spindle 44, it is constrained to Atransmit the reciprocatory motion of the spindle 44 to the tube 32. The bar 46 being swingable about the axis of the spindle 44, the sliver guide 3| is disposed closely adjacent to the arbor sections 4, 4a when starting up and-closely adjacent `to the periphery of the roll throughout the roll-building operation, being prevented by the fender-cam 33 from actually contacting with the periphery of the roll.

o It vhas been found that, if iiat sliver be reciprocated at a constant speed, it tends to superim- 32 engageable by a pose itself at one or more diameters of the roll, resulting in badly formed rolls.` To avoid this drawback, the tube 32 is reciprocated by a differential driving mechanism.

In the particular arrangement illustrated a drawing frame of which one end gable is indicated at 48 serves slivers 49 to a plurality of roll-forming machines arranged in parallel, the shafts 2 and 6, the bar 36, the traverse spindle 44, and the differential guide-traversing mechanism (Fig. 3) being common to all the roll-forming machines.

The main drive shaft 6 is driven from the drawing frame through sprocket-chain drives 50, 5| between which is interposed a change-speed gearing train indicated generally at 52 and including spur wheels which are changeable to compensate for variation of speed at the drive, take-off, or draft change, on the drawing frame or for draft change Within the roll-forming machines.

l53 denotesgthe handle f the drawingfframe drivingv belt set-off mechanism.

We claimr- 1. A sliver roll-forming machine comprising a pair of spaced relatively fixed cheek ,plates mounted for joint pivotal movement on `ahorizontal axis, shoes carried 'by`V one of said cheek plates, padsof friction material attached to said shoes, a yoke interconnecting :said shoes, a frictional pressure roller positioned between said` cheek plates, a coaxial pair of arbor sections carried one by each cheek plate and retractable endwise to permit ejection of a 'completed roll from between said cheek plates, a Viixed segment concentric vwthsaid axis, said segment Vmember presenting opposed arcuate faces, and a lever pivotally connected to said yoke and manually operableto force said pads Vinto frictional engagement with said segment. v

2. A sliver roll-forming'machine as claimed in claim 1 in `which each arbor section is carried by a sleeve formed with a cam groove engaged by'a fixed pin and so shaped that rotational movement of the sleeve effects axial displacement of the arbor section. Y Y v A 3. A sliver roll-forming machine as claimed Vin claim 1 -in-which Ythe arborsections are interconnected by crank and connecting rod mechanism :for simultaneous operation. 1

4.' lA sliver roll-forming `machine as Vclaimed in claim "1 including a sliver-traversing guide adapted to be reciprocatecl by differential drive `mechanism controlled by a cam moving with the cheek plates. Y

vr5. A-sliver roll-forming machine as claimed in claim l incorporating a sliver guide and differentialvv mechanism for reciprocating the sliver guide, said mechanism 'comprising a rotary driving disc, a friction Wheel disposed at right angles tosaid disc and :in frictional vcontact therewith,

said wheel being mounted on a shaft vfor move- 1 ment radially of said'disc under the control Yof a cam moving with the cheek plates, and a crank driven by said shaft for imparting endwisereciprocatory movement to a spindle operatively connected to the guide.v 6.`A sliver roll-forming machine as claimed in claim l incorporating a sliver guide .secured on a horizontal tube or -rod operatively connected to a reciprocatory spindle by means of la bar arranged for circular movement `about the axis of said spindle.

7. A sliver roll-forming machine as claimdin claim 1 incorporating a sliver guide and a fendercam moving withthe cheek plates and dapted'to maintain the sliver guide closely adjacent to but out of actual contact with the roll throughout the roll-building operation.

8; A sliver-roll-forming machine comprising a pair of spaced fixed cheek plates mounted for pivotal movement on a horizontal axis, a frictional pressure roller positioned between said cheek plates, a coaxial pair of endwise retractable arbor sections carried one by each cheek plate, a xed arcuate segment concentric with said axis, and friction members engageable with said arcuate segment for exercising frictional resistance to movement of said cheek plates about said axis, a yoke straddling said friction members, a lever pivoted to said yoke, and a pin carried by said lever and engaged with one of said friction members, said pin being manually operable to effect frictional engagement of said friction members with said segment.

GORDON FRASER. NORMAN FRASER. JOHN FRASER.

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