US3709444A - Positive thread feeder for circular knitting machines with a plurality of knitting points - Google Patents

Positive thread feeder for circular knitting machines with a plurality of knitting points Download PDF

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Publication number
US3709444A
US3709444A US00065189A US3709444DA US3709444A US 3709444 A US3709444 A US 3709444A US 00065189 A US00065189 A US 00065189A US 3709444D A US3709444D A US 3709444DA US 3709444 A US3709444 A US 3709444A
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Prior art keywords
winding body
lamellae
storage coil
thread
feeding means
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US00065189A
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English (en)
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K Tannert
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Individual
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Individual
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Priority claimed from DE1942062A external-priority patent/DE1942062C3/de
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the invention relates to a positive thread feeder for circular knitting machines with a plurality of knitting points comprising one rotary winding body each,
  • This storage coil between thread supply body and the knitting point of the machine in each case is used as intermediate storage from which the operating point can consume thread even if no additional thread is fed from the thread supply body due to tearing of the thread or because the reel is empty.
  • Such tread supply devices furthermore eliminate in an advantageous manner the differences in tension and plucking caused by the unwinding of the thread from the thread supply body. Furthermore, the use of such thread supply means eliminates the long thread reversals which were necessary according to prior art on knitting and weaving machines in order to form the necessary thread reserves between reel and thread supplier.
  • the supply coil is continuously applied to the winding body, moved progressively in axial direction and removed in tangential direction by the operating point of the circular knitting machine.
  • the unwinding of the thread from the coil body is synchronized with the winding.
  • the winding speed is harmonized with the consumption at the knitting point in question. Consequently, such a thread feeder operates as a so-called positive thread supply system.
  • positive thread supply causes the formation of uniformly sized stitches of desired size.
  • positive thread feeders decisively facilitate the adjustment of the knitting points, precisely in accordance with the desired thread consumption.
  • Thread feeders of prior art of the initially mentioned kind are unusually large in their technical cost for multisystem circular knitting machines so that they could make no inroads for general application in circular knitting machines. Others are appropriate only for threads having a certain elasticity. This elasticity is required because the effective circumference of the winding body changes due to the oblique position of the inserted feeder body from one to the other end of the position of the winding. This may lead at the winding to excessive stress of the material or cause an unreliable transportation of the winding layer. The thread layer then starts to flutter in the medium range of the winding body and the distance from winding to winding may be lost. Unwinding disturbances due to superposition from one winding to the immediately subsequent one result disadvantageously from this operation.
  • Another object of the invention is to provide a rolling body co-rotating with a winding body, the winding body and the rolling body engaging cammingly by a pin serration, and a thread discharge member being movable from a tangential unwinding operating position to an overhead discharge position.
  • Still a further object of the invention is to provide a I positive thread feeder which satisfactorily eliminates the deficiencies which heretofore have been experienced in practice.
  • a still further object of the invention is to provide a thread feeder which delivers positively, facilitates the adjustment of the knitting points according to the intended consumption of thread and creates a large thread reserve in the form of its storage coils eliminating the bulky and complicated thread reversals, the use of which was heretofore necessary for safety reasons in circular knitting machines.
  • the threading of many threads of a circular knitting machine no longer requires to be performed several meters above the head of the operator but can be done on body level within the reach of his hands.
  • a thread feeder for a circular knitting machine having a number of knitting points, each including a rotary winding body and a storage coil which is formed on the winding body by a feeding device.
  • the feeding device comprises a series of lamellae disposed on the circumference of the winding body which are individually guided such as to perform oscillating axial and radial motions superimposed on one another, whereby the storage coil is moved over part of the circumference of the winding body.
  • FIG. 1 shows a schematic view of the thread feeder according to the invention
  • FIG. 2 shows a section along line II--II in FIG. 1;
  • FIG. 3 shows a section along line III-III in FIG. 2;
  • FIG. 4 shows a section along line IV-IV in FIG. 2;
  • FIG. 5 shows another embodiment of the positive thread feeder according to the invention
  • FIG. 6 shows a section along line VI-VI of FIG. 5;
  • FIG. 7 shows an additional embodiment of the thread feeder according to the invention.
  • FIG. 8 shows a center section through the embodiment according to FIG. 7;
  • FIG. 9 shows a section along line IX-IX of FIG. 8.
  • FIG. 10 shows a further embodiment of the thread feeder according to the invention.
  • FIG. 11 shows a central section along line XI-XI through the embodiment according to FIG. 10'
  • FIG. 12 shows a section along line XIlXII in FIG. 11;
  • FIG. 13 shows the thread feeder according to the invention in an arrangement on a circular knitting machine
  • FIG. 14 shows a plan view in the direction of arrow XIV in FIG. 13.
  • the feed system of the thread feeder according to the invention is represented schematically in an embodiment in FIGS. 1 to 4.
  • a stationary carrier supports the winding body 2 with its axle stump 29 rotarily in its center.
  • a winding eye 52 and an unwinding eye 54, are fixedly connected to the carrier 5.
  • the winding body 2 is equipped with radial slots into which axis parallel individual lamellae 13 are inserted such as to be movable therein.
  • the lamellae move periodically with each rotation of the winding body in both axial and radial direction.
  • a guiding curve 138 is provided for the axial movement of the individual lamellae.
  • FIG. 2 shows that the individual lamellae in sectors A, B, C are located with their external operating edges 130 within the periphery of the winding body, while in sectors C, D. A they protrude beyond its circumference and carry thereby the storage coil.
  • FIGS. 3 and 4 represent the motion diagram of the individual lamellae within the winding body.
  • Each individual lamellae 13 carries out an axis parallel longitudinal oscillation lw and a radial oscillation a-i. Both oscillations are superposed so that an active resulant movement Rwi (FIG. 4) alternates with the resultant return movement Ral (FIG. 3).
  • the incoming thread 1 passes the winding eye 52 and encounters near C (FIG. 2) the enveloping circle of the lamellae.
  • C the enveloping circle of the lamellae.
  • the thread progressively winds upon the lamellae and progresses in sector C-D-A with the individual lamellae commensurate with the incline guide curve 138.
  • sector A-B-C the individual lamellae pass below the storage coil and, without influencing it they move back in their starting position in area C.
  • the thread layer remains in axial reposing position in sector A-B-C. This cycle is repeated with each revolution of the winding body and a storage coil is created with regular distance from winding to winding, until the unwinding thread 101a leaves the thread feeder through the thread eye 54 toward the knitting point of the circular knitting machine.
  • FIGS. 5 and 6 represent another embodiment of the positive thread feeder, schematically.
  • the entire eriphery of the winding body is formed by individual lamellae.
  • two groups of equivalent lamellae are created.
  • One lamella group forms the winding body with the individual lamellae 15, while another group represents the feed means with the individual lamellae 14.
  • Both groups of individual lamellae 14 and 15 are inserted into the core 20 of the winding body in relation to each other on a gap.
  • Each group of lamellae is moved by its own guide curve 148 and/or 158.
  • the oscillation of one lamella unit is thereby so coordinated in relation to the oscillation of the other lamella unit that the storage coil undergoes on its entire circumference an axial feed, alternatingly by the individual lamellae 14 and 15.
  • the individual lamellae pass below the storage coil 102. within the winding circumference determined in each case by the adjacent individual lamellae in feed action, without influencing said circumference.
  • the winding eye 52 and the unwinding eye 54 are fixedly connected to the stationary carrier 5 and stand still.
  • the winding body 2 is positioned on the stationary shaft 3 loosely operating with its bearing bushing 28. Its outer circumference is designed as sprocket wheel, whose tooth gaps are identified by 135.
  • the individual lamellae 13 connected by frontal disks 131 and 132 into a longitudinally deformable feed unit engage with this serration ofthe winding body.
  • the connections between the disks 131, 132 with the lamellae 13 are made by means of permanently elastic material. Also the individual disks 131, 132 may be made of permanently elastic material.
  • the radial oscillation of the individual lamellae is produced in this thread feeder (FIG.
  • each thread guard is connected to a permanent magnet 900 and/or 910.
  • the scanner of the thread guard drops down and approaches its permanent magnet toward a magnetic switch located at the stationary holding device 93.
  • the positive thread feeder according to FIGS. 10,11 and 12 is provided with two roll bodies 207 and 208. On their circumference these roll bodies are provided with bridges 207a and 208a which protrude the roll body itself in longitudinal direction. Thereby the bridges of the one roll body enter the gaps between the bridges of the other roll body.
  • the roll body 207 is rotated by the drive belt 41 via the drive pulley 4 and the clutch parts 212 and 213 along with its shaft 210.
  • the roll body 208 is positioned on the bearing pin 209 for loose rotation.
  • the axis of the bearing pin 209 intersects the axis of the i drive pin 210 at the acute angle (FIG. and at a distance e (FIG. 12).
  • the roll bodies 207 and 208 are in combining engagement with each other by their pins 20712 and their circular tooth flanks 208b.
  • the incoming, slightly braked thread 101 passes the infeed eye 52 and impacts tangentially on the bridges 207a rotating with their roll bodies in the direction of the arrow (FIG. 12).
  • the bridges 20802 of the inclined roll body 208 then take over the thread and convey it downward by one pace commensurate with the sloping position and the diameter.
  • the thread again reaches the roll body 207 positioned on the main axis.
  • the positive thread feeders according to the invention are operated in their entirety or in groups by ajoint drive means, for example a drive belt 41. At identical dimensions thus all jointly operated thread feeders deliver the same amount of yarn or thread to the knitting points of thecircular knitting machine corresponding to them, thus producing a very uniform knitting even when the stitchforming components of the circular knitting machine already have undergone a certain wear.
  • Each thread feeder is uncoupled against the joint drive belt 41.
  • the winding body thus no longer deliver positively but are only corotated loosely by the unwinding thread.
  • the speed ofthe drive means 41 is now adjusted in accordance with the new quantity of thread to be delivered.
  • the looping lock parts of the individual knitting points then are adjusted in relation to each other and engaged for the control of the correct thread consumption of the corresponding thread feeders, and it is checked whether the knitting point precisely consumes the quantity of thread delivered.
  • the discharge eye 54 (FIGS. 10, 11, 12) is placed at a pivotable arm, by which it can be placed into a central position U by a simple manual motion from its tangentiaI unwinding position T, the operating position, when the machine is to be reset in the above described manner or if troubles should occur at individual knitting points.
  • the coupling or clutch 212/213 is disengaged (FIG.
  • the entrainment means adjustable (220) and located at the winding body helps in its outer position (FIG. 12). Prior to the engaging the operator shifts this entrainment means again radially inwardly into its dead center position, for during normal thread feed by the winding body, this entrainment means remains inopera tive.
  • FIG. 13 is the lateral view of a multi-system rotary knitting machine with ajuxtaposed reel gate.
  • the drive shaft 310 be causes via sprocket wheels in the usual manner the rotation drive for needle cylinders and the dial. Moreover, via an adjustable intermittent gear 311 it propels the main drive pulley 300 for the entire thread feeder.
  • FIG. 14 shows a plan view of the thread feeding system connected by a carrier ring 218 to the machine.
  • the individual thread feeders are identified by 2, 41 is the joint drive belt.
  • Each thread 101 progresses from the thread supply body toward its thread feeder 2 and leaves it, identified by 1010 in the direction toward the thread guide 312 of the individual knitting points.
  • axial feeding means for forming the storage coil on the winding body
  • said feeding means including a plurality of lamellae having operating edges
  • the individual lamellae of the feeding means being interconnected by a pair of frontal discs into a lon gitudinally deformable unit, and
  • At least one of the discs being associated with a wobbling member having a bearing seat disposed at an acute angle with regard to the axis of the winding body, whereby a wobbling motion of the disc in relation to the winding body is produced.
  • a positive thread feeder for a circular knitting machine comprising:
  • said feeding means including a plurality of lamellae having operating edges
  • the operating edges of the lamella being constructed and arranged to transport during said motions the storage coil over part of the circumference of the winding body
  • the individual lamellae of the feeding means being interconnected by a pair of frontal discs into a longitudinally deformable unit
  • connections of the discs with the individual lamellae being made of permanently elastic material.
  • a positive thread feeder for a circular knitting machine comprising:
  • said feeding means including a plurality of lamellae having operating edges
  • the operating edges of the lamella being constructed and arranged to transport during said motions the storage coil over part of the circumference of the winding body
  • the individual lamellae of the feeding means being interconnected by a pair of frontal discs into a longitudinally deformable unit
  • a positive thread feeder for a circular knitting machine comprising:
  • said feeding means including a plurality of lamellae having operating edges
  • the operating edges of the lamella being constructed and arranged to transport during said motions the storage coil over part of the circumference of the winding body
  • the individual lamellae of the feeding means being interconnected by a pair of frontal discs into a longitudinally deformable unit
  • one of the frontal discs of the feeding means being fixedly connected to a drive pulley of the thread supply system.
  • a positive thread feeder for a circular knitting machine comprising:
  • axial feeding means for forming the storage coil on the winding body
  • said feeding means including a plurality of lamellae having operating edges
  • the operating edges of the lamella being constructed and arranged to transport during said motions the storage coil over part of the circumference of the winding body
  • the thread discharge means comprising means for pivoting the same from a tangential position relative to the winding body to an overhead position relative thereto.
  • a positive thread feeder for a circular knitting machine comprising:
  • said feeding means including a plurality of lamelmeans for mounting said lzimcllac in longitudinal gaps of the winding body at the circumference thereof,
  • said feeding means including a plurality of lamcllac having operating edges
  • a positive thread feeder for a circular knitting machine comprising:
  • a. means for entering and discharging the thread b. a plurality of knitting points each including a rot i di b d for causing the lamellae of the feeding means and c. a storage coil embracing the winding body slip-free the winding body to alternately transport the i h l li oftums, storage coil and move thereunder without affectd.
  • axial feeding means for forming the storage coil on "8 the Samethe winding body, 4 0: s a

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00065189A 1969-08-19 1970-08-19 Positive thread feeder for circular knitting machines with a plurality of knitting points Expired - Lifetime US3709444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1942062A DE1942062C3 (de) 1969-08-19 1969-08-19 Fadenspeicher- und -liefervorrichtung für textile Fäden

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US3709444A true US3709444A (en) 1973-01-09

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US (1) US3709444A (es)
CH (1) CH520220A (es)
CS (1) CS151038B2 (es)
ES (1) ES382792A1 (es)
FR (1) FR2058148A5 (es)
GB (1) GB1321430A (es)
SU (1) SU443518A3 (es)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759455A (en) * 1972-09-28 1973-09-18 Wesco Industries Corp Filament feeding and storage device
US3785176A (en) * 1971-06-21 1974-01-15 Fouquet Werk Frauz & Planck Thread supply apparatus for textile machinery, particularly circular knitting machines
US3827645A (en) * 1972-11-24 1974-08-06 K Rosen Positive thread delivery device for textile machines
US3854307A (en) * 1973-04-16 1974-12-17 Wesco Industries Corp Drive means for positive yarn feeding devices mounted on a circular knitting machine
US3924818A (en) * 1973-02-20 1975-12-09 Skf Kugellagerfabriken Gmbh Thread storage device
US3931939A (en) * 1973-03-15 1976-01-13 Aktiebolaget Iro Thread supply device for textile machines
US4003223A (en) * 1975-08-11 1977-01-18 Robert Joseph Vossen Replacement knitting machine feed wheel
US4044962A (en) * 1974-04-10 1977-08-30 Sergio Calamani Apparatus for yarn storing and feeding to yarn using machines
US4136837A (en) * 1976-08-31 1979-01-30 Gustav Memminger Verfahrenstechnik Fur Die Maschenindustrie Positive tape feed with multiple yarn windings
US4138866A (en) * 1976-03-02 1979-02-13 Firma Gustav Memminger-Verfanrenstechnik Fur Die Maschenindustrie Yarn delivery apparatus, especially for knitting machines
DE3045173A1 (de) * 1979-12-03 1981-08-20 Zbrojovka Vsetin, N.P., Vsetin Vorrichtung fuer die konstante zufuhr von garn an textilmaschinen
US4399952A (en) * 1980-03-03 1983-08-23 Schaub & Cie Ag Thread delivery apparatus
US4403745A (en) * 1980-10-02 1983-09-13 Aktiebolaget Iro Thread storing and feeding device
US4457144A (en) * 1981-02-17 1984-07-03 Precision Fukuhara Works, Ltd. Yarn feeding apparatus for circular knitting machines
US4591107A (en) * 1983-07-12 1986-05-27 Aktiebolaget Iro Yarn storage and feeding device
US4689972A (en) * 1985-09-30 1987-09-01 J. W. Yarbrough Yarn drying and dye setting apparatus
US5595354A (en) * 1995-06-29 1997-01-21 Lucent Technologies Inc. Apparatus for storing a variable quantity of moving strand material
US5647195A (en) * 1995-06-29 1997-07-15 Lucent Technologies Inc. Method for twisting a pair of moving strands
US5802879A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Knitting machine yarn receiver with accumulated waste discharge device
US5802881A (en) * 1996-09-23 1998-09-08 Lin; Tean-Lai Knitting machine thread wheel construction
US5802880A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Improvement of yarn supply reel and yarn guide for knitting machines
US5972160A (en) * 1996-01-20 1999-10-26 Straemke; Siegfried Plasma reactor
WO2006037451A1 (en) * 2004-10-08 2006-04-13 Iro Ab Yarn feeding device
US9102500B2 (en) 2010-10-22 2015-08-11 Btsr International S.P.A. Yarn feed-separation device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902023C2 (de) * 1978-02-22 1983-04-07 Leningradskoe mašinostroitel'noe ob"edinenie imeni Karla Marksa, Leningrad Fadenliefervorrichtung für Strickmaschinen
ES2115472B1 (es) * 1994-10-21 1999-02-16 Univ Catalunya Politecnica Dispositivo rotativo de alimentacion continua para maquinas de tejer.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1052212A (en) * 1911-02-18 1913-02-04 Glanzstoff Ag Winding-drum for threads.
US2435430A (en) * 1946-02-01 1948-02-03 Du Pont Yarn-advancing reel
US2512645A (en) * 1946-07-19 1950-06-27 Us Agriculture Self-advancing winding reel
US2614313A (en) * 1948-07-21 1952-10-21 Shell Dev Adjustable self-transporting thread store reel
US2628407A (en) * 1949-08-19 1953-02-17 American Viscose Corp Thread-advancing reel
US3490710A (en) * 1967-07-31 1970-01-20 Fouquet Werk Frauz & Planck Automatic thread delivery device for textile machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1052212A (en) * 1911-02-18 1913-02-04 Glanzstoff Ag Winding-drum for threads.
US2435430A (en) * 1946-02-01 1948-02-03 Du Pont Yarn-advancing reel
US2512645A (en) * 1946-07-19 1950-06-27 Us Agriculture Self-advancing winding reel
US2614313A (en) * 1948-07-21 1952-10-21 Shell Dev Adjustable self-transporting thread store reel
US2628407A (en) * 1949-08-19 1953-02-17 American Viscose Corp Thread-advancing reel
US3490710A (en) * 1967-07-31 1970-01-20 Fouquet Werk Frauz & Planck Automatic thread delivery device for textile machines

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785176A (en) * 1971-06-21 1974-01-15 Fouquet Werk Frauz & Planck Thread supply apparatus for textile machinery, particularly circular knitting machines
US3759455A (en) * 1972-09-28 1973-09-18 Wesco Industries Corp Filament feeding and storage device
US3827645A (en) * 1972-11-24 1974-08-06 K Rosen Positive thread delivery device for textile machines
US3924818A (en) * 1973-02-20 1975-12-09 Skf Kugellagerfabriken Gmbh Thread storage device
US3931939A (en) * 1973-03-15 1976-01-13 Aktiebolaget Iro Thread supply device for textile machines
US3854307A (en) * 1973-04-16 1974-12-17 Wesco Industries Corp Drive means for positive yarn feeding devices mounted on a circular knitting machine
US4044962A (en) * 1974-04-10 1977-08-30 Sergio Calamani Apparatus for yarn storing and feeding to yarn using machines
US4003223A (en) * 1975-08-11 1977-01-18 Robert Joseph Vossen Replacement knitting machine feed wheel
US4138866A (en) * 1976-03-02 1979-02-13 Firma Gustav Memminger-Verfanrenstechnik Fur Die Maschenindustrie Yarn delivery apparatus, especially for knitting machines
US4136837A (en) * 1976-08-31 1979-01-30 Gustav Memminger Verfahrenstechnik Fur Die Maschenindustrie Positive tape feed with multiple yarn windings
DE3045173A1 (de) * 1979-12-03 1981-08-20 Zbrojovka Vsetin, N.P., Vsetin Vorrichtung fuer die konstante zufuhr von garn an textilmaschinen
US4394988A (en) * 1979-12-03 1983-07-26 Zbrojovka Vsetin, Narodni Podnik Arrangement for constant feeding of yarn
US4399952A (en) * 1980-03-03 1983-08-23 Schaub & Cie Ag Thread delivery apparatus
US4403745A (en) * 1980-10-02 1983-09-13 Aktiebolaget Iro Thread storing and feeding device
US4457144A (en) * 1981-02-17 1984-07-03 Precision Fukuhara Works, Ltd. Yarn feeding apparatus for circular knitting machines
US4591107A (en) * 1983-07-12 1986-05-27 Aktiebolaget Iro Yarn storage and feeding device
US4689972A (en) * 1985-09-30 1987-09-01 J. W. Yarbrough Yarn drying and dye setting apparatus
US5595354A (en) * 1995-06-29 1997-01-21 Lucent Technologies Inc. Apparatus for storing a variable quantity of moving strand material
US5647195A (en) * 1995-06-29 1997-07-15 Lucent Technologies Inc. Method for twisting a pair of moving strands
US5972160A (en) * 1996-01-20 1999-10-26 Straemke; Siegfried Plasma reactor
US5802881A (en) * 1996-09-23 1998-09-08 Lin; Tean-Lai Knitting machine thread wheel construction
US5802879A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Knitting machine yarn receiver with accumulated waste discharge device
US5802880A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Improvement of yarn supply reel and yarn guide for knitting machines
WO2006037451A1 (en) * 2004-10-08 2006-04-13 Iro Ab Yarn feeding device
US9102500B2 (en) 2010-10-22 2015-08-11 Btsr International S.P.A. Yarn feed-separation device

Also Published As

Publication number Publication date
GB1321430A (en) 1973-06-27
CH520220A (de) 1972-03-15
SU443518A3 (ru) 1974-09-15
ES382792A1 (es) 1973-04-16
FR2058148A5 (es) 1971-05-21
CS151038B2 (es) 1973-09-17

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