US3169714A

US3169714A - Machine for the spooling of freshly spun, untwisted synthetic filaments

Info

Publication number: US3169714A
Application number: US128055A
Authority: US
Inventors: Schippers Heinz
Original assignee: Barmag Barmer Maschinenfabrik AG
Current assignee: Oerlikon Barmag AG
Priority date: 1960-08-01
Filing date: 1961-07-31
Publication date: 1965-02-16
Anticipated expiration: 1982-02-16
Also published as: CH388827A; DE1435340A1; DE1435340B2; BE606428A; GB984572A; NL267608A

Description

Ela E63, 131965 H. scHlPPERs 3.5169314 Mmmm son ma sPooLING oF FREsI-ILY smm;. uurwrsm SYNTHETIC FILAMENTSI;

2% Shaetswsheet 1 manada my? man;

S R .L E T P om WP. N H Nm mm wm W S C NN @n S uw .o 0 m v A, ffm I Agila o E nLr'fl m. 2 A. Hw. a f f @NR on n. b\ @n ww n mm n ATT'Y Feb- 16, 1965 H. SCHIPPERs 3,169,714

MACHINE FOR THE SPOOLING 0F FRESHLY SPUN. UNTWISTED SYNTHETIC FILAMENTS Filed July 31, 1961 2 Sheets-Sheet 2 60\ 5o cvcLE I GENERATOR MOTOR GENERATOR 67- I 75 cvcLE F-'l G. 5

s? loo cYcLE -70 72 Til-LI 36 7l INVENTOR.' HEINZ SCH IPPERS BY\ n tra 3,169,714 MACFWE FR THE SPOMNG OF FRESHLY SPUN, UN'IWISTED SYN'IEETC FILAMENTS Heinz Schippers, Remscheid-Lennep, Germany, assigner to Barmer Maschinenfabrik ,AG., Wuppertal-her bannen, Germany Filed lilly 31, 196i, Ser. No. 123,655 Claims prierity, application Germany Aug. l, 1960 3 Claims. (Cl. 242-48) The in ventionvrelates to a machine for the spooling efgfreshly spun synthettic filaments, which, after leaving the spinning;no zrle,V are Wound untwisted into tapered windings. Y,

In the spooling of freshly spun synthetic filaments, the spools and the Awinding build-upy are largely determined by the spun material'to b'e wound, on its delivery speed -and the nature of further processing of the ilaments.

VDiverse winding processes 4are being used-which endeavor l to take account of these factors. In one manner or yan-y other,` considerable improvements have, been lachieved.;` Y

f :I-loweven; although spinning rates of `the filaments 'could be increasedwithout difficulty, these'rates'must beheld back because the winding devices known today/.have about reached their maximum performance capabilities. i Windings of untwisted, freshly spun filaments, which windings have tapered ends, are advantageousv inasmuch as' `the filaments can be drawn office-furtherprocessing without forming a newwinding prior'to the processing.,

Infsimilar windings as, for example, in respooling or twisting, ordinarilya reciprocatingsystem 'is' used for the build-up on the spools of tapered windings.v The yarn or filaments isdeposited at a fixed or-` variable angle on the 'rotating' spool by means of a traverse-motion thread Machines for these K windings j operate ,under .two 5 basic principles, in which,lfduring` a Vwinding operation, ,eitheronly the reciprocating guide stroke applied tofthe lyarn being wound is varied steadily or periodically and, .for example, isbroughtfrorn a' maximum to a minimum guide.

ori-vice versa, or in` whichthe yarn guide stroke field migrates'constantly at af constant or variable stroke and,

for example, is shifted alternatelyvlto the one ,andto the other side. combined.

tion.- of these machines andl winding principles'runs linto .A considerable difiioulties, and,` accodingly, there occur,

Often both-,these types of distribution are A in a free fwinding, Le., without mechanical action1 on the ofthe axialmovement ofthe pool,

. fable uctuations in denier. 4.0

i taperedjend s,tha't the filamentsiare;'suppliedtjthef ously dimini'hin'g in len'gth o stages;

m6,? 142 Patented Feb. 16;, 19565 windings of `relatively small depth without substantial iiuctuations in denier of the wound filaments.

Whereas otherwise in thespooling of yarns delivered at a constant speed, for the achievement of a constant or approximately constant circumferential velocity of the spool bodyk regardless of winding diameter, drive -drums are used, which turn at a constant speed and. drive the spool body by friction.

This principle cannot be applied for the spooling of delicate filaments without damage to the spun material. lt has also beenproposed that the speed of rotation of the spool be regulated in dependence on the growing winding in such a way that its takeup yrate will always correspond to a constant delivery. -The regulating devices provided .for this purpose, which feel out the winding radiusV or the yarn tension by means of a member arranged as an impulse transmitter or in which the yarn as such lis 'the impulse transmittenact mechanically more ory less' strongly by contactpressure,v`

yarn defiectionor the like on-the yarn and are incapable of satisfying higher demands required to maintain the quality off the laments in the'spooling of delicate lspun material 4into .spools with tapered filaments have beenspun. `VThe .delicate nature, of theffreshly spun filaments demandsthe winding ,of freshlyspun,'ntwisted filaments ends directly afterthe Vwindingorjthe filaments. v,The problem of freewin'din'g of. spunmaterial ofldelicate quality, accumulating at a high delivery speed, hasjto day;despite`ft he fact'f that` 'y there have belen Anumerous proposal'sfor its solutionnot been satisfactorily solved. The corelof the problemlies presumabiylargely in the fact that 'both in ,the formation of winding bodies withvtapered'ends yby the known `distributing or traverse systems andialso"merelyas4 a result ofthe increasing circumferential velocityat the winding surface becoming greater with increasing winding diameter at constant turning speedof the spools, V'differences occur in the filament tension, which bring about undesir to bewound, untwisted,' in free'lwindin'g, intos'pool' with stroke that is slowerfand longer thanjsaid jsi'or't stroke an lnjtlhis arrangementyt spoolis regulated independence .tion isEregulatedfin dependence onth irate" pf revoldtion during the winding.buildfupfdifferences filament?,ten-` sion,- whichfare' broughtaboutby thefrapid change of I I wound. layers or windings o`i`-smaller vto larger diameters from the winding a'xis :and vice v e'rsaorl bychan-'ges of the distribution angle or withrelatively long spool-bodies and relatively large movement strokeof the filamentguide '4" (traverse triangle). These fluctuations in winding' tension have an unfavorable effect on the spinning material'and its structure, especially in this -'early stage of thedevelopment ofthe laments,causing intolerable;fiuctuations in v, Y vdenier, 'The known`devices, therefore',-are unusable foif. practical purposes in the .windingpf-d'elica'te, freshly spun fila'ment's,` especially synthetic filaments of .thermoplastic-f polymers, moltenl glass andv the like.` At bles@ because of thedeuier fiuctuationswhich Ydevelop in large'gwindings i ofthese filaments, the known machines carispoolouly' The regu lation vorv t maintainers bstaiitiallyc tion of V the axial spoelrmo'yeme'ntl 1 lnthismanner an.especiallyflbeneiicial 'spin-spooling' Y fllarnerit's norv winding Y i process" is achieved, `since neither In recognition of these Yr,elationships, .it is proposed bytlv thiszfinvention, that for the spoolingvof freshlyjspun synthe` tic filamentswhich, after leaving the ,spinning nzzle fare tata ins Spool:tarandtraverse fmQtOf"WthQQnStant!shalt,-

Vtraversestrokes. and are deposited in layers on" he spool, jk which'is moved axially backend forth withv revolution rate k of v` 'srantiinervele-f ity-of take-upof- Afilairlen't onf thewinding body" preferably isdon'ein responsefto thefdimi'nution 'ofivthe axial i spool stroke'path. Wherethestroke diminution operates inresponse to a decreasejin rate of revolution of the spool, 'l theregu'lation is e'ont'rolle'dby a predetermined'program. Vitis aisopossible'to alter the speedfof the stroke Inovement simultaneously infdependence on the stroke diminuf 1 .is a filament distribution-diagramhlthe windings" producedf'in accordance with y-the im/entien.V fFi". Zis a perspective'viewY oan embod mentgf the invention-for 'winding filameri`ts1- into vwinding bodies with l' issus are;mountedpn'the'carrier slide 6, whichisrrnountedV on v VFIK'G. 3 is an elevation oa spool with a filament wind- I ing body with tapered ends;

FIG. 4 is a schematic View, partly in section, of a known ,type of reciprocating drive for the spool carrier of the embodiment of FIG. 2; and FIG. 5 isa schematic View of one type of electrical circuity, of itself known, for changing the rate of rotation of the electric motor for thewinding spindle by change Yof frequency of the current supplied to the motor.

A's'is schematically represented in the iilament distribuv .tiondiagram of FIG. l, the distribution ofthe tilaments VVon-spools in kwinding bodies with tapered ends takes place in constantly or stepwise shorter, superposed layers or nected by conduits 22 and air with the hydraulic Viiuid o rair tank 2h.

The reverse drive 19 is connected with a control device which includesV a threaded spindle 23, the threads 24 on one-half of the spindle being-of an opposite hand to the Y A movable f block'Zd is threaded on threads 7.4, and a movable block threads 25' 0n the other half of the spindle.

'1 27 n threaded on threads as. The threaded spaanse is journalled in the two bearings 2S and 2@ and is driven by electric motor 30 via a gear reduction box Si.

The blocks Z6 and 27 are slidably mounted on a guide rod 32 extending between hearings 28 and 29`to prevent series of layers, of which each succeeding one is shorter v thanv the preceding. Since the spools rate of rotation is y'reduced tosuch a degree that its ilament take-up rate corresponds to the delivery speed whereby filaments are woundat very nearly vconstant tilament tension, the tcnsion ditiiculties and denier uctuations otherwise V`usual are avoided'or reduced to a barely perceptible and tolerrnent' deliveryspeed above that now used with known w'inding devices, windingswith tapered vends of any `desired`volurne can be formed Vwith uniform vfilament' quality. v f Y Forthe executionof the process, a machine whosedesign and .mnner ofV operation.' is explained in .detail is described.. and illustrated; inaFIGURi-E 2. The' special ifea res of this spooling machine foruntwisted freshly lamentsarethat thetraverse'v device Vror the -lafrn'eiitjs is jarranged to providea regular, reciprocating,

shortA stroke YAYalong'- the lengthroi 'the winding Y spool' yor n ,the 'winding vthereon to thetilaments just.aheadof theirVv liable a'i'nount;y 'Moreoven Vin -this manner even with ila- 'f supporting frame39. They are operated by the blocks A "'deliverytothe spool;l the traverse or reciprocating inecha-Y "nisml for lth e"- sp'oc')l or V`its ,icarrierfon the other hand,'is.

axially movahle'j-bacl' and forth; and the control devicey reduction or Vstroke speed of the spool can beinade 'prac-VA tic/'able by, a mong' others, electrical, means.

The'windlng machine comprises a spool oriyin'ding tube A111 bearing andis Vclrivenbyfthe drive motorf. Both fentf'tr vers mechanism li is `driv'enhyy its,

ical sidtftlirough lvvlfiich ,mechanism V'may' be' .montedfinf'a iixed position onfa' v .The 'earner s ,lide'd and winding mechanism Jnounted thereon 'is reciproiiatedby a'piston rod;i 15 `attach dito 'thefpla'te "1 6x which fis mounted Y'on the underside i' -nedfconstant rette. I t rn'ay-V construetionwhich'will reciprocate the v s filaments-as theyare wound onthefspool fij'lfhe mecha-z .j f nism shown in ,the drawingY f 'oufs,`urv ed slot i3 in its cylin Y Y YQslo'tzthe' ilanientsv Fpass( f As thefdrumflz"-s rotated by VthernotorlG,the'iilamentpathisrnoved'baclr and orth; j

j fOtherrnea'ns'sueh as recipro 'Y jin place of 'the' mechanism vrillustrated. The' `traverse-1 drum 12 with a continri-l l l`for the .shortening of the reciprocating stroke vof thes'pool' 2o" its 'ca'rfierfisV` equipped with shifting means o1thef c '3nv YQ yti'nuohsfory stepwise reduction ofthe spool rotation rate Yland, possibly,'jof the "speed of thejaxial `movement ofthe '.spool.'A Here, the yreciprocating drivejfor the back-andforth movement. 'can be done by mechanical, hydraulic or pneumatic ,devices and theVv control Vtor, the rotation' speed v remostably."mounted on a spool carrierv'orsp'indle 2. hedrive'.shaftorlthe'spindle islrotatabiy jotirnalled-f v Y v,""center @f the spindle V,55.

rotation of the blocks 26 and 27. When the spindle 23 is rotated Iby motor 30, the 1bl'ocks`26 "and 27 move in opposite directions on the threads 24 and 25 of opposite hand. Y i

The blocks-26 and 27, respectively, carry

switches

33 and 34. These switches are operated by lthe actuator 35 and are connected in an electrical circuit for transmitting direction control impulses to the hydraulic or pneumatic reverse drive 19. Y.

f switches@ 's7- a'nd es are adgustbiy .positioned mime 26 and/for??v and operate in an electricalcircuit Vof the rnotor 5" to diminish its rate 'of rotation,e.g., by changing l.

thegfrre'qen'cy 'of the Vdrive rnotor IS. VThe switches 36e- '38 VVcan alsoibe used'for thecontrolfof. the stroke/speed of the reverse drive 19 by acting-onthe pump output or special valves and thus changing the velocityv of reciprocati'onvof the 'carrier slide/6.'Y While the illustrated `einboliinent shows three switches 36538, all operated 'by Acontact with the'bottoin of the'bloclcZd, morethan three switches Yfinay be used and operatedby blocks 2d and/or 27` in a more frequent rsequence to provide amore frequent se- VqueriesV in the stepwise reduction ofzthe rotation rate 'of Athe motor Stomaintain a nearlyconstant linear take-up 1 vvelocity of theilaments F intorthe winding on the spool 1'. v

' AT he novel mode of operation of the spooling machine "I esults frornit's 'special arrangement 'The ilaments F, A

ldeliveredfrom aispinningnozzle at a constantfvelocity, v4 usually arev a multiple number-ot individualflaments.

`,They are conducted backand forthby the traverse device i1 rotating atfa'constant-turning vspeed'to provide a constanty short stroke acrossra Xed-*ar'ea and in this-manner y are deposited fon thespool` 1j:y` Intheproc'essth`e spooll Y with thefcornponents'l, 3,- 4, 5,"Y61carrying and driving it is' moved back andforth bymeans ofthe .piston rod 15 in Vrhythtrilof thepi'ston movement of the hydraulic .or

'By superimposit-icn thesliort, constant,

th-slower, 'diminishing strokejoi the spoolfl relativefto the ileirnents a layer' bf1windings1isbuilt xipon the j fspolJ'in which processeach successive V-lay'er'is shorter; in ilengtii 1than`the pr'ecedingjlayer. The 11espective*:layersV of shortening lengthgrnay b e \vindingiayers which.v are a r single lamentin vdepth 'orwhich are1several windings in lf deptlnj 'Ihis depends uponwhether ythefrel'ative rates of direction,

reciprocation 'of the Yfilaments F bythe traverse devicel 5 that the filaments, ndlnrapid reciprocation by the traverse JV'device- 11, buildup :a Winding Vmore thanonefilanjient in depth fa thefspool inoves past the device listin a Vgiven 'l i 21 for the hydraulic fluid or Simultaneously, the circumferential velocity or speed of the winding 'on the spool is diminished to the degree which corresponds to the constant delivery speed of the larnents. For this purpose, the blocks 26 and/or 27 operate switches 36-38, and possibly additional switches, in a timed sequence corresponding to the times at which successive winding layers 'of greater diameter than the preceding winding llayer begin to form, i.e., when the spool stroke reverses, to reduce the speed of motor 5.

In the drive unit of the threaded spindle 23, a mechanism of any suitable construction can be provided which drives the threaded spindle in reverse direction at a higher speed until the blocks 25 and 27 have been restored to their starting position while the wound spool is being replaced by an empty spool.

A spool wound by the process and machine of the invention is shown in FiG. 3 wherein the winding 4t) on the spool or winding tube 1 is wound in a plurality of successive winding layers of diminishing lengths to give a winding with tapered ends 41 and 4Z. Even very delicate filaments can be wound into windings with tapered ends, even of relatively great volume of the winding, by the process of the invention wherein the winding y speed is adjusted to remain substantially constant with the constant filament delivery in such a way that any uctuations in denier remain within the desired narrow limits. A further advantage of the iilament distribution on the windings according to the invention is that the crossing angle of the individual filament windings crossing in opposite direction alternates from layer rto layer, whereby, as is well known, the winding build-up as such is improved and subsequent operations with the wound iilaments are facilitated.

FIG. 4 shows the details of the reciprocating drive 19 for the carrier slide, 6, which is reciprocated by piston rod connected to piston 17 in cylinder 18. This drive is shown in Patent No. 2,529,777, issued to W. H, Mclnnis on November 14, 1950. The piston is moved by hydraulic or pneumatic pressure delivered through control valve 45 consisting of a hollow cylinder having a rod47 passing concentrically through the axial passage 46 and end plates 4S and 49 of the valve 45. Two pistons Sil and 51 are fixed on the rod 47 in spaced relation. The rod 47 is motivated by

solenoids

52 and 53 on each end thereof. The energization of either of the solenoid coils moves the rod 47 and pistons 5G and 51 in 'one axial direction. Intake and outlet ports are provided in the valve. The central pipe 21 has connection with the intake port through which the uid enters the valve, and oppositely disposed thereto are two pipes 54 and 55, which conduct the fluid to and from the cylinder 18. These pipes connect to opposite ends of the cylinder and become alternately intake and outlet, depending on the direction of travel of the lpiston'. Two

outlet pipes

56 and 57 are connected to opposite ends of the valve and lead to `a common outlet pipe `22. Pipes 21and Y22 are connectedto the iluid tank FGQS of the drawing is a schematiorepresentation of the circuitry, in itself known, for variable speed motor 5. This circuitry involves the supply 'of current of different frequencies to the'motor 5 under theV control of

switches

36, 37 and 38.- The circuitryfor supplying currents of different frequencies to a work motor is that illustrated on page 104 (FIG. 73) of the text, Electrobetrieb in der Textilindustrie, by Dr. lng. W. Stiel, Verlag S. Hirzel, Leipzig (1930). In the illustratedcase, currents 'of frequencies of 50, and 100 cycles per second are generated in conductors ed, 61 and 62, respectively, by a 4-pole motor 63 driven bythe 50 cycle current constituting the power supply. Motor 63 drives the 75 cycle, 4-pole generator 64 and the 100 cycle, 2-pole generator 65. The

generators

64 and 65 supply their respective frequencies to the

conductors

61 and 62.

Each of the frequency conductors is tappedby

conductors

68, 69 and 70, which in turn are connected to poles or contact points of a switch 71 through which current a given frequency is supplied to motor 5. The switch 71 is activated by a relay 72, eg., the well known stepping relay, which operates in stepped sequence upon successive closing of

switches

36, 37 and 3S.

rl`he invention is hereby claimed as follows:

1. A winding machine for winding freshly .spun iilaments into a winding body with tapered ends comprising a spindle` adapted to hold a winding tube, power-operated means for reciprocating said spindle in `an aXial direction at a variable stroke length, drive means for rotatably driving said spindle at variable rates of rotation, filament feed means for reciprocating said ilaments over a constant, short stro-ke length as they are fed to the winding tube on said spindle, a pair of control blocks, power-driven means for moving said blocks toward each` other during the winding operation, a switch on each of said control blocks,l

means to decreasethe rate of rota-tion of said spindle by t, said drive means in a predetermined control program to maintain the filament velocity at the point ofy winding substantially constant during the winding operation.

2. A winding machine as claimed in claim 1 wherein said power driven means comprises a rotatably-driven screw with threads'of opposite hand thereon, one of said blocks being threadedly mounted on a thread of one hand and the other of said blocks being mounted on a thread of the opposite hand whereby, upon rotation of said screw, said blocks may be moved toward each other during the winding operation, and motor-driven means for rotatably driving said screw.v

3. A winding machine as claimed in claim 1 wherein said additional switches are mounted on a frame adjacent to and extending parallel with said rotatably-'driven screw, said additional switches being adjustably spaced on said vframe in the line of movement fof atleast 'one of said blocks whereby saidswitches 'aresequentially actuated by said atleast one of said control blocks as said blocks move toward each other during said winding operation.

v2,379,815 Loveridge etal. .Tuly 3,1945

y3,041,662 Cochran Juiy 3, 1962 3,042,326 Lamb et a1. 1 July 3, 1962l n, FOREIGN PATENTS* 1,012,078 France Apr. 9, 1952k Great Britain Apr.`.v3,1l9574 y

Claims

1. A WINDING MACHINE FOR WINDING FRESHLY SPUN FILAMENTS INTO A WINDING BODY WITH TAPERED ENDS COMPRISING A SPINDLE ADAPTED TO HOLD A WINDING TUBE, POWER-OPERATED MEANS FOR RECIPROCATING SAID SPINDLE IN AN AXIAL DIRECTION AT A VARIABLE STROKE LENGTH, DRIVE MEANS FOR ROTATABLY DRIVING SAID SPINDLE AT VARIABLE RATES OF ROTATION, FILAMENT FEED MEANS FOR RECIPROCATING SAID FILAMENTS OVER A CONSTANT, SHORT STROKE LENGTH AS THEY ARE FED TO THE WINDING TUBE ON SAID SPINDLE, A PAIR OF CONTROL BLOCKS, POWER-DRIVEN MEANS FOR MOVING SAID BLOCKS TOWARD EACH OTHER DURING THE WINDING OPERATION, A SWITCH ON EACH OF SAID CONTROL BLOCKS, SWITCH-ACTUATING MEANS RECIPROCATING WITH SAID POWEROPERATED MEANS FOR ACTUATING EACH SWITCH DURING RECIPROCAL MOVEMENT OF SAID SWITCH-ACTUATING MEANS, CONTROL MEANS OPERATIVELY CONNECTED WITH EACH SWITCH FOR REVERSING THE DIRECTION OF MOVEMENT OF SAID SPINDLE BY SAID POWER-OPERATED MEANS WHEN SAID SWITCH-ACTUATING MEANS ACTUATES ALTERNATELY EACH OF SAID SWITCHES, ADDITIONAL SWITCHES SEQUENTIALLY OPERATED BY AT LEAST ONE OF SAID BLOCKS DURING MOVEMENT THEREOF TOWARD EACH OTHER, AND MEANS OPERATIVELY CONNECTED WITH SAID ADDITIONAL SWITCHES AND SAID DRIVE MEANS TO DECREASE THE RATE OF ROTATION OF SAID SPINDLE BY SAID DRIVE MEANS IN A PREDETERMINED CONTROL PROGRAM TO MAINTAIN THE FILAMENT VELOCITY AT THE POINT OF WINDING SUBSTANTIALLY CONSTANT DURING THE WINDING OPERATION.