US3314223A - Apparatus for yarn production - Google Patents

Apparatus for yarn production Download PDF

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US3314223A
US3314223A US338684A US33868464A US3314223A US 3314223 A US3314223 A US 3314223A US 338684 A US338684 A US 338684A US 33868464 A US33868464 A US 33868464A US 3314223 A US3314223 A US 3314223A
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Prior art keywords
yarn
pot
package
twist
air
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Bobkowicz Emilian
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D7/00—Collecting the newly-spun products
    • D01D7/02—Collecting the newly-spun products in centrifugal spinning pots
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/08—Spinning or twisting machines in which the product is wound-up continuously cup, pot or disc type, in which annular masses of yarn are formed by centrifugal action
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/74—Cup or like arrangements
    • D01H7/82—Casings or guards for rotary cups or the like

Definitions

  • the present invention relates to an apparatus adapted to the production of yarns from any type of elongated materials presented, for example in the form of textile fiber strands, tapes, slivers or filaments.
  • the apparatus of this invention is particularly concerned with the making of yarns from textile fibers bonded together to any desired degree by an imparted resinous bonding agent in a continuous automatic sequence of operations from the moment of feed in of the material to be processed into a yarn to the output of the ready yarn package.
  • This invention relates to such a fully automatic, integrated ringless spindle, the numerous main novel features of which constitute considerable improvements over and above the United States Patent No. 2,900,782 issued Aug. 25, 1959, to Emilian Bobkowicz covering an inverted pot spindle which does not incorporate any of the basic novel features of the present invention, such as among others the application of special air jet assemblies for imparting a positive twist, an inside the pot spindle integrated reciprocal traverse package building device, a built-in pneumatically operated automatic dofiing arrangement, automatic reciprocal package supporting and ejection members as well as a yarn cutting device.
  • the fully integrated and automatic pot spindle of the present invention constitutes in respecct to its main aspects and due to its novvel basic mechanical features, a novel apparatus over and above the features covered by said United States Patent No. 2,900,782.
  • the present invention incorporates the following basic devices, coordinated and integrated in one apparatus and comprising: means to deliver the material to be twisted to the twist imparting means, means to apply compressed air at high velocity into twisting means to aid twisting and conveying the twisted yarn to yarn collecting means, means for forming of a proper yarn package inside the yarn collecting means, automatic yarn package dofiing, receiving and ejecting means, means for automatically cutting the yarn before automatic dofiing takes place, means for supporting the yarn during the operation and formation of the yarn package, and driving means for driving the delivery, twisting and yarn collecting means.
  • the yarn making apparatus of the present invention embodies the following main features:
  • a set of suitable delivery guiding or yarn preforming rolls preferably provided with a heating device to soften the thermoplastic bonding agent, if and when the latter is imparted to the material to be twisted, while said material passes over or between said delivery rolls, to either heat seal or heat set the twist imparted by the twist imparting assembly.
  • the twist imparting assembly of the present invention comprises a housing enclosing and supporting an inside elongated body revolving at high speed and preferably having a helical or any other suitable bore formed therein to create an off center path for the material passing therethrough, to create a throw and thereby impart a positive twist to the material. It is an essential feature of this aspect of the invention that a continuous flow of compressed air is generated through said bore while the elongated body is rotated and while the material to be twisted is passing therethrough.
  • the air current also promotes the coagulation of the previously heat softened thermoplastic agent in the material in its twisted form, stabilizing its final shape which was obtained while passing through the off center bore in the form of a balanced yarn with a neat set or heat sealed twist, depending upon the degree of heat applied to the material while it passed over the aforementioned delivery rolls.
  • housing surrounding and supporting said twist imparting elongated body is preferably also utilized as an air cham ber of continuously supplied into it compressed air from a central supply source. From this air chamber, the air flow is preferably induced through suitably designed orifices through the elongated member into the material path in the elongated revolving twisting member to also ensure the uninterrupted travel of the yarn through said twisting device, as well as through the entire pot spindle, until it reaches the pot and is collected and formed into a yarn package.
  • the twist is imparted to the material with the aid of compressed air, injected into the twist imparting assembly by means of high velocity air jets, and the thereby resulting frictional drag forces on the material as well as the centrifugal forces present, by forcing the material to be twisted in an off center movement through a suitably formed congested off center path in the elongated body while the latter revolves at high speed, all
  • the adjustable to needs air pressure and air velocity provides convenient elastic non-mechanical grip means to properly control the drag and tension applied to the yarn during twisting, which will considerably reduce yarn breakages and increase the range of materials suitable to be economically formed into yarns, even from materials the physical properties of which, particularly in respect to inadequate fiber strength or length, do not render them well to economic processing into suitable yarns by conventional yarn making means.
  • a further advantage of this twisting arrangement is that when yarns are made with a heat set or heat sealed twist, it will result in the production of balanced yarn which will not contain the inherent tendency of conventional yarns to untwist due to the working of counter twist forces, which in weaving result in the kinking of the yarn and which in dry pot spinning result in the collapse of the yarn package when the untwisting forces in a conventional yarn exceed the centrifugal forces, what phenomenon is a serious drawback and application limiting factor of dry pot spinning, in addition to the fluctuating and rather inadequate centrifugal forces to impart an even and positive twist by centrifugal forces alone.
  • a further embodiment of the present invention is the utilization of an inverted pot spindle to act solely as collecting means of the already positively twisted balanced yarn, obtained by the before mentioned'twisting member, which according to the present invention is directly mounted over said yarn collecting pot spindle in such manner that both the twisting member and pot spindle comprise a coordinated assembly, integrated in such manner that each component can be driven by separate driving means at the same or different speeds, preferably from one driving center.
  • Such an arrangement makes it possible, whenever needed, to drive the rather small and compact elongated body at much higher speeds than the yarn collecting pot spindle itself, enabling the production of textured yarn or stretch yarn in one continuous operation on one and the same apparatus; in conventional textured or stretch yarn production two distinct and dilferent apparatuses and numerous operations are required to achieve the same or similar results.
  • Such yarns have to be of or contain a thermoplastic material and the initially imparted higher twist is heat set before it reaches the yarn collecting pot, which although revolving in the same direction may run at any desired slower speed to thereby remove any desired amount of the heat set twist from said yarn, and at this stage formed into a yarn package.
  • the apparatus of the present invention incorporates delivery rolls equipped with any suitable heating arrangement.
  • the pure air jet twister for most cotton, man-made and the like soft fibers, the pure air jet twister, according to the present invention, will in most cases suffice to impart a satisfactory positive twist, and in addition the said air jet twister may advantageously be modified for more positive and greater force requiring twist imparting in stiffer materials such as 21.0. bast and hard fibers.
  • the said pure air jet twisting means may be modified by utilizing an elongated tubular body with a venturi shaped inside path in the upper wider section of which two rolls are mounted, one above the other, the axes of both of which lie in a common vertical plane, and of which the upper roll is preferably an idler roll which can be biased to ensure that the surface of the opposed lower roll is in firmly gripping contact with the former, the axis of the lower roll being mounted in the wall of the surrounding it hollow elongated body, onto the outside the body extended axis ends of which two pinion bevel gears are mounted, one keyed onto the axis and the other used as an idler for better balance and smoother performance, or alternately the latter can be substituted by a suitable counter weight.
  • the lower section of the hollow elongated body is journaled through and mounted for free rotation into a hollow extended shaft of a crown bevel gear which teeth engage the teeth of said pinion bevel gears, both so assembled and mounted in the surrounding and supporting it same housing, as in the before mentioned pure air jet twister, also utilized as a chamber for compressed air induced by suitably formed orifices into the hollow path of tie elongated body to provide in this twister assembly as well the adequate air drag, suction, cleaning, cooling and yarn conveying forces in addition to the mechanical gripping forces of the two rolls incorporated inside said elongated body which by their axial rotation are adapted to positively grip, draw and forward the material passing the nip thereof and to impart by the simultaneous transaxial rotation of the whole elongated body a desired positive twist to the material which is passing through the elongated body which is driven by a pulley mounted to its lower end journaled through said crown bevel gear, to the extended shaft of which another pulley is mounted to drive the latter.
  • This alternative air jet twisting arrangement may also find application in the production of yarns where the drawing out of the material, while still plastic, between the positively driven heated delivery rolls and said twist imparting assembly, while the twist is imparted, would be advantageous for better fiber alignment and harder twist.
  • this invention also embodies an alternative air supply by generation of its own adequate high velocity flow of air without the use of an outside air supply source, by the provision on top of the elongated body of a suitably shaped fan member.
  • the ready twisted yarn by forementioned air jet twister assembly is collected in a rotating pot.
  • a rotating collecting pot it is necessary to arrange that the point of introduction of the yarn into the pot is continuously reciprocated along the axis of the pot in order that a traverse yarn layer build up of the package may be systematically formed over the whole inner surface of the pot.
  • this has been customarily achieved by means of a yarn carrier extending into the pot and reciprocated by means of a traversing member located externally of the spinning apparatus.
  • the invention provides apparatus for collecting ready twisted yarn, comprising a rotatably mounted inverted pot having a substantially circular top with an annular wall depending from said top, said pot having an aperture located centrally in said top for feeding of yarn downwardly into the pot and a first tubular member extending upwardly from said pot, the latter constituting an extended hollow shaft connected to the pot for rotation therewith, means for rotating said first tubular member, a second tubular member arranged concentrically within said first tubular member, means for rotating said second tubular member at a different speed from that of said first tubular member with its pot, a hollow traversing member mounted for simultaneous rotation and reciprocation within said second tubular member, means for compelling said traversing member to rotate at the same speed as the first tubular member with its pot and means interconnecting said traversing member with the said second tubular member in such a manner as to cause reciprocation of said traversing member relative to both of said first and second tubular members.
  • the hollow traversing member is provided with a longitudinally extending groove within which is engaged a key extending from said first tubular member, whereby the traversing member is caused to rotate at the same speed as said first tubular member.
  • the traversing member is also provided with a continuous, double helical thread within which is engaged a sliding key extending from said second tubular member rotating at a different speed than the said first tubular member, whereby the traversing member is caused to reciprocate relative to both of the first and second tubular members.
  • the same reciprocating motion may be achieved by having a key extended from the second tubular member engaged within the longitudinal groove of the traversing member and a second key extending from the first tubular member engaged Within the helical groove in the traversing member.
  • a third tubular member connected With said second tubular member, revolving at the same speed, is journaled through the hollow traversing member, serving as a yarn carrier through the hollow traversing member to prevent undesirable distortion of the yarn flow which is possible if the yarn is in direct contact with the reciprocating package building u member, as is the case in the absence of said third tubular member.
  • One problem dealt with by the present invention is that of automatic doffing, thus ejection of a yarn package from the pot.
  • the yarn package formed while the pot is rotating at high speed is compacted due to the centrifugal forces acting and adheres strongly to the walls of the pot, which adherence is increased when the yarn contains a thermoplastic agent which may in many instances still retain a slight tackiness, depending upon the type of thermo plastic agent used and its degree of coagulation when the yarn reaches the pot.
  • such support can be provided by means of a detachable first base plate, preferably of a resilient light weight material suitable to be positioned into the pot bottom by any adequate press fit arrangement to enable it to revolve with the pot without any additional support from below.
  • Said removable first base plate rests before start up of the pot twister on a supporting it second rigid base plate mounted below the pot onto a reciprocable preferably hydraulically operated plunger which at start up is designed to lift and insert the first plate into the open end of the inverted pot after which the second plate retracts alone to its lowest position from which it is moved up again by any suitable automatic timing device when the yarn package is ready for doifing to receive the latter with its supporting first plate after both are ejected by the previously described air doffing operation.
  • the first detachable package supporting plate has a center hole and the second plate has in its center 21 preferably circular sharp cutting member which, through the opening of the first plate comes into contact, when the second plate reaches the upper dofling position, with the traverse yarn conveying and package building member, for severing the yarn immediately prior to the automatic ejection of the package from the pot, what is imperative before doffing can take place.
  • the second plate is preferably mounted to the supporting it reciprocable plunger in such manner as to enable it to revolve freely with the pendant pot during the short contact during the described dofiing operations, what makes it possible to insert the first plate or to receive the first plate with the ready yarn package on the fly, thus when the pot is still revolving slightly, hence facilitating a more positive severing of the yarn by the cutting member and also reducing the time elapsed during the dofiing cycle.
  • the above arrangement also enables the insertion of a conical yarn supporting spool into the yarn package while the latter is still on the fly, said spool being deposited on the second plate prior to doffing and subsequently inserted by it into the ready yarn package through the hole in the first plate.
  • the present invention also relates to a spinning frame comprising a plurality of twister apparatuses, according to the invention, which incorporates suitable slitting means to make it possible to process continuous tapes of laminated textile fibers in a continuous automatic sequence of operations on said spinning frame from tape to ready packages of yarn by first feeding said tape into the slitter, by slitting the tape into a plurality of narrow continuous ribbonifilaments, by guiding said ribbons to the delivery rolls, by heat softening the imparted thermoplastic bonding agent, by then subjecting said ribbons to twisting operations, by collecting the ready yarn into large yarn cakes and by automatically dofiing said yarn packages enabling the start of another yarn making cycle from said textile filament tapes.
  • FIG. 1 is a cross-sectional view of an apparatus for forming and collecting yarns
  • FIG. 2 is a cross-sectional view of a modification of the apparatus of FIG. 1
  • FIG. 3 is a cross-sectional View of a modification of the apparatus of FIG. 1
  • FIG. 4 is a schematic perspective view of apparatus comprising a plurality of yarn-forming and collecting apparatuses of the type shown in FIG. 1.
  • Section A comprises an assembly for receiving of the material which is to be formed into yarns by having twist imparted thereto and for feeding said material downwardly into the apparatus, if desired after a heat treatment to be described hereafter.
  • Section 3 comprises an assembly which serves to impart a twist into the material passing therethrough which for this purpose is provided with its own driving means.
  • Section C cornprises an assembly which is provided with driving means of the yarn collecting means and which imparts a traversing member and means for its reciprocating movement adapted to lay down the finished yarn in the form of a package.
  • Section D comprises an assembly for collecting and means for dotting of such a yarn package from the collecting means.
  • Section E comprises an assembly for aiding of the dofiing of the package and ejecting it after dofiing.
  • the material receiving and delivery assembly comprises .roll .1 and roll 2 preferably mounted vertically one on top of the other.
  • One of said rolls is preferably positively driven, the other being an idler biased towards the driven roll.
  • This material receiving and delivery assembly may be provided with a suitable heating arrangement 3, as for instance mounted in the center of roll 1, and a yarn guide 4.
  • Section B comprises the housing 5 made up of the upper and lower halves forming a closed chamber and mounted to supporting frame 13, said housing 5 containing a rotatably mounted twist imparting assembly comprising tubular elongated body 7 containing elongated cylindrical insert 6 provided with oif center bore 12 constituting a material entrance port extended to form a helical path 12 into which through orifices 8, 9, .10 and ill preferably compressed air is injected by air supply duct 17 via air chamber 14 provided for within frame 18 and through air orifice 13 into the air chamber formed by housing 5 surrounding the rotatable tubular body 7 .
  • which lower part journaled through the lower half of housing 5 is provided with pulley 15 driven by belt (15 from any suitable central driving source.
  • the helical path 12, the tubular body 7 and insert 6 form at their lower part a venturi for the purpose of increasing suction forces within the helical path 12.
  • the elongated tubular body 7 has its lower section V-shaped to enable its close mounting to third tubular member 23 through which the twisted material passes into the yarn collecting pot 33.
  • Section C comprises first tubular member 21 which constitutes the extended tubular shaft of the inverted yarn collecting pot 3t ⁇ mounted in frame 18 and said member 21 provided for rotation with pulley 25 driven by belt 26 from a central drive (not shown).
  • First tubular member 21 contains second tubular member 22 provided at its upper part with pulley 1% driven by belt 26 and its lower part with key 23 engaging a double helical groove 29 of a tubular traversing member 24 hav- 9 ing on its outer surface a longitudinally extending linear slot 2A for sliding on key 27 affixed to first tubular member 21.
  • a third tubular member 23 journaled through traversing member 24 is mounted at its upper portion to second tubular member 22 for rotation therewith.
  • Section D of the apparatus comprises a yarn collecting pot 39 which is of an inverted dished shape and within which a yarn package 37 is "built up.
  • the upwardly extending tubular shaft member 21 of the pot 39 is rotatably mounted in frame 18 resting upon base frame 39.
  • the lower section of frame 13 forms a housing 40 which includes an annular stepped portion which serves to provide an air chamber 32.
  • An annular diaphragm, 36 which is made of a resilient material such as synthetic rubber, is mounted below the air chamber 32 to the housing 41). The inner edge of the diaphragm 36 projects above the upper surface of pot 3t ⁇ wherein a plurality of ports 47 and 31 are provided.
  • a rigid diaphragm 34 is secured to its upper portion by an expandable spring 35 positioned around the inside of the pot 39 extending portion 49 of shaft 21 along which rigid diaphragm 34 is arranged to slide in its reciprocal movement.
  • the annular diaphragm 36 remains in the position shown in FIG. 1, out of contact with the upper surface of pot 39, and it does not impede the rotation of the pot 30.
  • the drive to the pot is first switched off. Compressed air is then introduced by air supply duct 17 into air chamber 32 through an inlet in housing 4%
  • the annular diaphragm 36 is caused to deform downwardly until it contacts the upper surface of the pot 3!
  • the chamber 32 is then sealed so that the only available outlet of air is by way of the ports 31 and 4-7 into air chamber 33.
  • the upper surface of diaphragm 3-4- is subject to downward force transferred to the upper surface of yarn package 37.
  • Pot 39 has a removable annular pot bottom 38 which has a central hole which enables unrestricted free outflow of the air injected into the apparatus during its operation as previously described and provides an opening in the bottom for cutting off action of the yarn as described hereinafter.
  • the purpose of the pot bottom 38 is to support and aid an even build up of the yarn package 37 at its bottom.
  • the pot bottom 38 is preferably formed of a plastic or other resilient light-weight material and has an outside rim 48 which springs into a corresponding annular groove inside at the bottom of the walls of pot 3h.
  • the degree of force required to insert or ex el the pot bottom 38 from the pot 35 is relatively small and does not present a serious obstacle to the dofiing of the package 37 in the manner described above.
  • Section E comprises a plate 45 mounted to the supporting frame 39 and which serves to carry preferably any conventional suitable pneumatic cylinder 44 and which is extended outside the apparatus to receive the yarn package 37 after dofiing and its ejection from the apparatus by a preferably electrically operated solenoid 46.
  • annular cutter 42 is affixed and below said cutter 42 an annular plate 43 connected with another annular plate 3-1 is rotatably mounted which all means are upwardly and downwardly movable with the plunger of the pneumatic cylinder 44.
  • Plate 41 is shaped to fit into the annular cavity of the removable pot bottom plate 38 so as to enable to carry and press bottom plate 38 into operating position into the inverted pot 39 respectively to receive and support said bottom plate 38 with the yarn package 37 when supporting plates 43 and 41 have been brought into dofling position by the uppermost position of the plunger of the pneumatic cylinder 44 at which position contact is established between the traversing member 24 when it reaches its lowest position with the cutter 42 what serves to cut or sever the yarn extending from the traversing member 24 and the yarn package 37 so that doihng of the yarn package is made possible.
  • plates 41 and 43 make it possible to insert pot bottom 33 into operating position while the pot has already started to revolve at the beginning of a new cycle and to perform the above described dolfing operations of the ready yarn package while the pot is still on the fiy before the braking action has brought it to a complete stop. These possibilities will considerably reduce the stoppage time between production cycles and facilitate greatly the positive yarn severing action at dofl ing.
  • plates 41 and 43 may comprise one plate.
  • timing of all of the functions of the apparatus according to FIG. 1 can be preset for complete coordination that will result in a fully automatic operation from material feed in through twisting, yarn collecting and dofiing until the final ejection of a ready yarn package.
  • the it i twist imparted by the twist imparting member7 can be heat set due to the coagulation action of the air flow if the material prior to the feeding into the twist imparting member 7 has been subject to heat to soften the thermoplastic material by the use of any suitable heating arrangement such as for instance shown in FIG. 1 where the heating unit is placed inside the delivery roll 1 over which the material has to pass and at which nip of roll 1 and 2 the actual twist starts when it is imparted to the material by the revolving twisting member 7 as previously described.
  • any desired amount of such heat set twist can be taken out of the yarn during its collection in pot 30 since it can be arranged to have the pot St) to rotate at any desired degree slower than the twist imparting member 7.
  • the yarn when the yarn is removed from the pot 30 and processed into a fabric it will tend to regain the amount of heat set twist per inch taken out during yarn collection in the pot. Accordingly the fabric made of such yarns will have imparted permanent stretch properties. Yarns of such properties are called in the art stretch or textured yarns. Accordingly, by operating in the manner described the apparatus of this invention is adapted to produce stretch or textured yarn in a single continuous operation on one apparatus as per FIG. 1.
  • FIG. 2 shows a modification of the apparatus of FIG. 1.
  • the two halves of housing 50 contain a modified elongated body at which top fan blades 55 are mounted which rotate with the elongated body to draw in air into the air chamber formed by housing 50 through ports 56 in the top of the housing 50 to compress the air by the high speed revolution of the fan blades 55 and to force the air through orifices 52 and 53 into the helical path 51 to impart a twist into the passing through it material and to force it downwardly in the same manner as previously described in respect to FIG. 1.
  • no outside air supply means from a central source are required. Otherwise the twisting means of FIG. 2 are operated identically to the twist imparting means of FIG. 1.
  • FIG. 3 shows another modification of the twist imparting means of the apparatus of FIG. 1.
  • the upper and lower half of the housing 70 forming an inside air chamber is mounted to the supporting frame 18 as per FIG. 1.
  • An annular air chamber 67 formed in said supporting frame is connected with air supply pipe 69 and from air chamber 67 by orifices 68 the air is injected inside the air chamber formed by housing 70.
  • the mounted inside said housing 70 elongated tubular body 57 is journaled with its lower extended part 76 for rotation through the tubular shaft of crown gear 75 which is rotatably mounted in the lower half of housing 70.
  • the journaled through said housing 70 tubular shaft of crown gear 7 5 is provided with the driving pulley '73 and lower part 76 of the elongated tubular twist imparting member 57 journalled through the hollow shaft of crown gear 75 is provided with a driving pulley 74.
  • the wider upper tubular part of the elongated body 57 contains a roll 59 which axis 61 is mounted for rotation in the side walls of the elongated body 57.
  • Onto the extending outside the elongated body 57 axis 61 a pinion bevel gear 60 is keyed in and mounted to engage crown bevel gear 75.
  • Pinion bevel gear 72 is mounted on the outer side of axis 61 as an idler for balance only.
  • roll 59 On top of roll 59 another roll 58 is mounted for rotation on its non-revolving axis 62 which both flat ends are secured in corresponding slots provided in the upper part of the elongated body 57.
  • the roll 58 is biased towards roll 59 for rotation as an idler with the driven roll 59 achieved by a rubber ring 6 3 secured and pressed downwardly by a protective cover 71 afiixed to the top of the elongated body 57 for rotation therewith.
  • the cover 71 has an opening in its upper center corresponding with a similar opening in housing 70 for feed in of the material to he twisted by the rotating elongated body 57.
  • the tubular inside shape of the elongated body is venturi like formed 66 to generate inside said elongated body 57 adequate suction force with the aid of the injected air via air jets 65 and 54- to aid the twist imparting operation and to forward downwardly the material twisted.
  • By rotating pulleys 74 and 73 at a different speed the differential in rotation between crown gear 75 and bevel gear 60 will result in the axial rotation of the connected with gear 60 roll 59 together with biased to it roll 58.
  • FIG. 4 shows a yarn production machine comprising a plurality of apparatuses as per FIG. 1 along the line AA which incorporates any suitable slitting arrangement 77 adapted to receive a continuous wide tape of material from a central supply source and slit it into a plurality of narrow tapes, guide and feed each tape to an apparatus as per FIG. 1 wherein each tape is twisted into a yarn, formed into a yarn package, each yarn package dofied and ejected onto plate 45 as per FIG. 1 all in a continuous automatic sequence of operations on one multispindle machine as per FIG. 4.
  • Apparatus for automatically transforming elongated material into a yarn package comprising in combination:
  • a rotatable yarn collecting device positioned below said twist imparting device and comprising a yarn collecting inverted pot adapted to receive the forwarded yarn and means for imparting reciprocating movement to the yarn entering said inverted pot while said collecting device is rotated, so as to form a yarn package in the said pot;
  • the twist imparting device comprises a rotatably mounted elongated body having an off center bore formed therein, said bore constituting a portion of the path of travel of said material and said elongated body also being provided with air jet orifices through which the compressed air at high velocity penetrates while said elongated body is rotated.
  • Apparatus according to claim 2 wherein the rotatably mounted elongated body is provided with a fan arrangement which is so mounted as to form, during rotation of said body, a continuous air flow in the OE center path of said rotating elongated body.
  • the twist imparting device comprises a rotatably mounted tubular elongated body wherein two rolls are mounted one above the other for axial rotation within said body and transaxial rotation with said body to ensure by their axial movement a positive grip for drawing and forwarding the material which passes the nip thereof and to impart by their simultaneous transaxial rotation a positive twist to said material, said tubular elongated body also being provided with air jet orifices through which the compressed air at high velocity penetrates while said elongated body is rotated.
  • said means for imparting reciprocating movement to the yarn entering the inverted pot comprise: a first tubular member extending upwardly from the pot and connected to the latter for rotation therewith; a second tubular member mounted concentrically within said first tubular member; means for rotating said second tubular member at a different speed than that of said first tubular member; a hollow traversing member mounted for simultaneous rotation and reciprocation within said first tubular member; a first key extending from said first tubular member and engaging a longitudinal groove in said traversing member, whereby the latter is caused to rotate at the same speed as said first tubular member; a second key extending from said second tubular member and engaging a continuous double helical thread on the periphery ,of said traversing member, whereby said traversing member is caused to reciprocate relative to both said first and second tubular members and imparts reciprocating movement to the yarn entering the rotating inverted pot.
  • a third tubular member is mounted concentrically within said hollow traversing member and is connected with its upper portion to the second tubular member for rotation therewith, said third tubular member preventing interference and contact of the reciprocating traversing member with the flowing yarn.
  • said means for imparting reciprocating movement to the yarn entering the inverted pot comprise: a first tubular member extending upwardly from the pot and connected to the latter for rotation therewith; a second tubular member mounted concentrically within said first tubular member; means for rotating said second tubular member at a different speed than that of said first tubular member; a hollow traversing member mounted for simultaneous rotation and reciprocation within said first tubular member; a first key extending from said second tubular member and engaging a longitudinal groove in said traversing member, whereby the latter is caused to rotate at the same speed as said second tubular member; a second key extending from said first tubular member and engaging a continuous double helical thread on the periphery of said traversing member, whereby said traversing member is caused to reciprocate relative to both said first and second tubular members and imparts reciprocating movement to the yarn entering the rotating inverted pot.
  • a third tubular member is mounted concentrically within said hollow traversing member and is connected with its upper portion to the second tubular member for rotation therewith, said third tubular member preventing interference and contact of the reciprocating traversing member with the flowing yarn.
  • Apparatus according to claim 1, wherein the automatic, pneumatically operating package dofling means comprise: a housing extending above and about the inverted pot which has, in its circular top, a plurality of ports; a flexible annular diaphragm secured to said housing and overlaying the periphery of said circular top of the pot but normally out of contact with said top; and means for introducing compressed air between said housing and said pot so as to deform the diaphragm and place it in contact with said circular top thus forming a sealed chamber from which the air may escape only by Way of said ports, thereby exerting downward pressure on the upper surface of the yarn package within said pot and effecting the dofiing of said yarn package.
  • a rigid annular diaphragm is secured by an expandable spring within said inverted pot and is supported by its inside tubular extension in such position as to create an air chamber inside said pot so that when a predetermined amount of compressed air enters therein by way of the ports in the top of said pot, equal and increased pressure over the whole surface of the rigid diaphragm is exerted and transmitted therefrom to the yarn package, thus effecting the downward movement of the rigid diaphragm and the doffing of the yarn package until said rigid diaphragm looses contact with the inside wall of the pot having a slight downward and outward slope, which results in the escape of air and elimination of air pressure, permitting the flexible and the rigid diaphragms to retract to their normal positions.
  • inverted pot is provided with a pot bottom which has an outer rim adapted to engage a groove at the lower edge of the pot wall to support the lower surface of the yarn package within said pot while unsupported except by said pot; and support means being provided to move said pot bottom upwardly to engage said rim with said groove and to lower said pot bottom and the yarn package positioned thereon when the dofiing of said yarn package takes place.
  • a cutter is centrally mounted on said support means which are rotatably mounted to enable their rotation with said pot when contacting the latter while inserting said pot bottom or while dotting the yarn package; and said pot bottom has a central circular opening to enable contact of said cutter with the yarn entering the pot just before dofling of the yarn package, whereby separation of said yarn package from the yarn entering said inverted pot is achieved.
  • cutting means are further provided to separate the yarn package from the yarn entering the inverted pot at the time of doffing of said yarn package.
  • Apparatus according to claim 1 adapted to produce in one operation a package of textured stretch yarn
  • said means for delivering the elongated material to said twist imparting device comprise a heating element for heat setting the twist
  • the twist imparting and yarn collecting devices are provided with separate driving means which enable rotation of said twist imparting device at a higher speed than that of said yarn collecting device, whereby a higher desired heat set twist is first imparted to elongated material containing a thermoplastic resinous bonding agent by the twist imparting device and then part of said heat set twist is removed by the yarn collecting device, thus producing textured stretch yarn.
  • a plurality of apparatuses according to claim 1 positioned side by side and forming a yarn production frame, said frame further comprising slitting means for slitting a continuous textile web into a plurality of continuous narrow tapes which are led to their respective apparatuses to be automatically transformed into yarn packages.
  • Apparatus according to claim 1 wherein separate driving means are provided for the twist imparting device and for the rotatable yarn collecting device, enabling differentiation in the rotation speeds of said devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US338684A 1962-10-30 1964-01-20 Apparatus for yarn production Expired - Lifetime US3314223A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4802862 1962-10-30
CA870156 1963-03-05

Publications (1)

Publication Number Publication Date
US3314223A true US3314223A (en) 1967-04-18

Family

ID=25673436

Family Applications (1)

Application Number Title Priority Date Filing Date
US338684A Expired - Lifetime US3314223A (en) 1962-10-30 1964-01-20 Apparatus for yarn production

Country Status (8)

Country Link
US (1) US3314223A (de)
AT (2) AT296831B (de)
BE (2) BE644785A (de)
CH (1) CH442093A (de)
DE (1) DE1510525C3 (de)
FR (1) FR1361785A (de)
GB (2) GB1048259A (de)
NL (2) NL6401890A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722199A (en) * 1970-05-08 1973-03-27 A Gardella Can spinning frame
EP0515762A1 (de) * 1991-05-22 1992-12-02 Carlos Pujol-Isern Verfahren zum Zentrifugalspinnen
US5385007A (en) * 1992-03-13 1995-01-31 W. Schlafhorst Ag & Co. Pot-spinning device having magnetic bearing providing radial and axial support
US5813207A (en) * 1993-05-04 1998-09-29 Koenig; Reinhard Centrifugal spinning process and device
EP1028181A1 (de) * 1999-02-12 2000-08-16 W. SCHLAFHORST AG & CO. Zentrifugenspinnmaschine und Verfahren zum Zentrifugenspinnen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108929A1 (de) * 1991-03-19 1992-09-24 Schlafhorst & Co W Topfspinnvorrichtung
CH688515A5 (de) * 1994-07-23 1997-10-31 Traxler Alfons Dr Vakuumzentrifuge und Dichtung hierfuer.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787983A (en) * 1953-04-29 1957-04-09 Hans B Lippelt Housed animal stalls having automatically operating release means
US2843996A (en) * 1955-02-10 1958-07-22 Gardella Adriano Shiftable bottom plate and cheese carrier frame for bottomless suspended spinning cans
US2895283A (en) * 1955-01-28 1959-07-21 Gardella Costantino Thread cheese-ejecting device for suspended centrifugal spinning cans
US2900782A (en) * 1957-06-10 1959-08-25 Bobkowicz Emilian Universal spinning unit
US3114231A (en) * 1960-02-26 1963-12-17 Novivlas Nv Method and apparatus for the manufacture of bast fibre yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787983A (en) * 1953-04-29 1957-04-09 Hans B Lippelt Housed animal stalls having automatically operating release means
US2895283A (en) * 1955-01-28 1959-07-21 Gardella Costantino Thread cheese-ejecting device for suspended centrifugal spinning cans
US2843996A (en) * 1955-02-10 1958-07-22 Gardella Adriano Shiftable bottom plate and cheese carrier frame for bottomless suspended spinning cans
US2900782A (en) * 1957-06-10 1959-08-25 Bobkowicz Emilian Universal spinning unit
US3114231A (en) * 1960-02-26 1963-12-17 Novivlas Nv Method and apparatus for the manufacture of bast fibre yarn

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722199A (en) * 1970-05-08 1973-03-27 A Gardella Can spinning frame
EP0515762A1 (de) * 1991-05-22 1992-12-02 Carlos Pujol-Isern Verfahren zum Zentrifugalspinnen
US5385007A (en) * 1992-03-13 1995-01-31 W. Schlafhorst Ag & Co. Pot-spinning device having magnetic bearing providing radial and axial support
US5813207A (en) * 1993-05-04 1998-09-29 Koenig; Reinhard Centrifugal spinning process and device
EP1028181A1 (de) * 1999-02-12 2000-08-16 W. SCHLAFHORST AG & CO. Zentrifugenspinnmaschine und Verfahren zum Zentrifugenspinnen
US6240715B1 (en) 1999-02-12 2001-06-05 W. Schlafhorst Ag & Co. Centrifugal spinning machine and method for centrifugal spinning

Also Published As

Publication number Publication date
GB1048259A (en) 1966-11-16
DE1510525B2 (de) 1973-12-13
DE1510525A1 (de) 1969-11-13
CH442093A (de) 1967-08-15
GB1014319A (en) 1965-12-22
NL132553C (de)
FR1361785A (fr) 1964-05-22
DE1510525C3 (de) 1974-07-11
BE644785A (de) 1964-07-01
NL6401890A (de) 1964-09-07
AT288924B (de) 1971-03-25
BE634723A (de)
AT296831B (de) 1972-02-25

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