US3670976A - Delivery device for threads on weaving machines, knitting machines, or the like - Google Patents

Delivery device for threads on weaving machines, knitting machines, or the like Download PDF

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Publication number
US3670976A
US3670976A US29042A US3670976DA US3670976A US 3670976 A US3670976 A US 3670976A US 29042 A US29042 A US 29042A US 3670976D A US3670976D A US 3670976DA US 3670976 A US3670976 A US 3670976A
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United States
Prior art keywords
motor
phase
waves
current
diodes
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Expired - Lifetime
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US29042A
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English (en)
Inventor
Giuseppe Vischiani
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Sobrevin Societe de Brevets Industriels
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Sobrevin Societe de Brevets Industriels
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Application filed by Sobrevin Societe de Brevets Industriels filed Critical Sobrevin Societe de Brevets Industriels
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Publication of US3670976A publication Critical patent/US3670976A/en
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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
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Definitions

  • a delivering device for threads on weaving machines, knitting machines, or the like which comprises a motor and a drum which is rotated by the motor and adapted to store intermediately a predetermined thread supply prior to each thread removal.
  • a thread supply surveillance device is arranged for stopping the motor upon reaching a nominal-thread supply.
  • the motor comprises an asynchronous two-phase motor.
  • a current valve circuit is provided for feeding current to the m0- tor.
  • the surveillance device emits a motor stopping-command signal in both phases in the stopping position, and the current valve circuit is transferred by the command signal for either positive or negative half-waves.
  • the present invention relates to a delivering device for threads on weaving machines, knitting machines or the like, in which a predetermined thread supply is stored inten'nediately prior to each thread removal on a drum driven by an electric motor and the electric motor is stopped by a surveillance device of the thread storage upon reaching the nominal-thread storage.
  • the thread supply must be wound in a special arrangement, suitable for a quick and possibly tension-free thread removal on the drum, for example, the drum can only be wound in one layer. If the nominal-thread supply is reached, the drum must be stopped immediately, so that by a superfluous thread length the prescribed winding length is not disturbed, for example, a second winding layer arises. Thus, it is demanded from the drum drive, that it comes to a standstill as quickly as possible upon obtaining the signal nominal-thread supply reached, and that it fills up again, on the other hand, the nominal-thread supply safely again the intermediate time periods. Since the drum has only a low weight, and thereby a low inertia, an electric motor of comparatively low output suffices as a drum drive, in particular, since due to the axial removal of the thread no acceleration forces are exerted on the drum. I
  • a control device for the drum drive which control device is properly functioning, is created with only a minimum constructive expenditure.
  • this object is brought about in accordance with the present invention, such, that an asynchronous two-phase-motor is provided as a drum drive, the current feeding of the motor taking place by means of a current valve'circuit, which is transformed by the motor stopping-command signal of the surveillance device in both phases in the locking state, either for the positive or the negative half-waves.
  • the electric motor is fed only with half-waves of one sign, and thereby preferably only still with half-waves of one phase, whereby a rapid braking is obtained in dependency upon the signal of the surveillance device.
  • the current valve circuit contains for each phase two diodes disposed anti-parallel in the exciting current circuit, of which the diodes adapted for the feeding of the positive half-waves are controllable in dependency upon the command signal of the surveillance device. If the diodes are locked during the positive half-waves, the electric motor is fed in both phases only with the negative half-waves and thereby, a braking of the motor is released.
  • the negative half-waves of the phase moving with a time-lag can be guided by a controllable diode, disposed in the exciter circuit of the phase leading in phase, so that also the negative half-waves of this phase can be locked likewise in dependency upon the command signal of the surveillance device, whereby the brake effect is still increased.
  • a photoelectric arrangement can be provided in known manner, the signal voltage of which releases an occurrence of a locking voltage at the grids of the controlled diodes.
  • the length cuit with a variable resistance By this arrangement, the number of revolutions of the electric motor is settable stepless between zero and a maximum number of revolutions.
  • FIG. 1 is a schematic top plan view of a delivering device, designed in accordance with the present invention
  • FIG 2 is a circuit diagram of the control circuit for the drive of the delivering device.
  • FIG. 3 is a circuit diagram of a testing device for determination which of the phases is leading in phases.
  • the delivering device comprises a rotating drum 1, which has a truncated cone-shaped receiving phase 1' and a cylindrical phase 1", following the phase 1 in forward direction.
  • a cylindrical drum section 1 Pre-set to the truncated cone-shaped receiving phase 1', is a cylindrical drum section 1".
  • a brake ring 2 Within the forward range of the drum is provided a brake ring 2.
  • the drum 1 is brought into rotation by an asynchronous two-phase-motor.
  • the control therefor takes place by means of a light gate.
  • the light source 3 operates in cooperation with a photocell 4, disposed inside of the drum 1.
  • the drum wall is formed transparent for the passage of the light ray at least in its passage range.
  • the revolutions of the drum 1 can be counted by means of a counter.
  • Adjacent to the drum 1 is arranged a thread guiding roller 6.
  • the thread 7 moves with its section 7 within the range of the cylindrical surface area 1" of the drum 1.
  • the thread moves towards the truncated cone-shaped receiving phase 1'.
  • a predetermined winding supply 7" of thread material has been formed, thereby, on the cylindrical drum section 1".
  • the light gate 3, 4 is rendered operative, which stops the drum 1.
  • the thread 7" is removed in axial direction below the brake ring, which leads to a slip-elastic drum engagement of the thread 7 If the thread supply, due to its removal, follows below the provided minimum supply, the drum starts again rotation, caused by the control of the light gate 3, 4.
  • FIG. 2 shows the control circuit, by means of which, the photocell 4 controls the two-phase-motor with the windings A, and A Furthermore, the circuit according to FIG. 2 contains a time-switching circuit 8 with a variable resistance 9 for the stepless setting of the number of revolutions of the motor.
  • the motor feed takes place by means of a current valve circuit 10, which includes for each phase two anti-parallel disposed diodes D, and SCR,, and D and SCR,, respectively.
  • a current valve circuit 10 which includes for each phase two anti-parallel disposed diodes D, and SCR,, and D and SCR, respectively.
  • the cathodes of both controllable diodes SCR and SCR: and the anode of the diode D are connected to a distributing wire 11, which is connected by means of a diode D to the zero-conduit 0" and to the anode of the diode D,.
  • the positive half-wave of the voltage V flows through the winding A and the diodes SCR, and D to the joint neutral wire 0".
  • the negative half-wave of the "9" flows independently from the control of the diodes SCR, and SCR over the diode D,.
  • the current l flows over the winding A,,, the diodes SCR, and D to the joint neutral wire.
  • the current flows over the diodes D SCR, and D,.
  • the voltages V, and V are delivered fully (reduced by the voltage drop of the diodes) to the windings A, and A so that the maximum number of revolutions of the motor results.
  • the current 1 can not flow any more.
  • the current I flows only through the diode D, thus only in one direction. Under these circumstances, a maximum braking of the motor results, by which the number of revolutions of the motor is reduced quickly to zero.
  • both diodes SCR, and SCR are controlled between these two above-described extreme states completely open or completely closed during all positive half-waves if these diodes are more or less opened for a long period during the positive half periods, the motor can be driven with any selected median number of revolutions.
  • a positive collection wire 12 is connected by means of a diode D, to the winding A, and furthennore by means of the diode D, and the two equally large resistances R, and R to the winding A,. Between the two collection wires 11 and 12 are disposed in series, a resistance R, and a transistor T, which is conducting during the positive half-waves of V, and V Consequently the condenser C separated from the resistance R, bymeans of a diode D and disposed parallel to the resistance R charges itself by means of the resistance R,,,.
  • the transistor T In the time interval, in which both voltages V, and V, are negative, the transistor T, is locked and the condenser C discharges over the resistance R 7 During charging of the condenser C the threshold-voltage settable by means of the variable resistance 9 occurs on the transistor T The transistor T becomes conducting and brings 4 an ignition voltage to the emitters of the two controlled diodes SCR, and SCR, by the transistor T, switchedby means of the emitter amplifier and the resistances R and R By adjustment of the threshold-voltage at the transistor T the time interval can thus be set, by which time interval the control diodes SCR, and SCR, are at first retarded upon occurrence of a positive half-wave of V, (transistor T, becoming conducting) and can be switched into the conducting state. By setting of the variable resistance 9, the number of revolutions of the motor can be set stepless.
  • the direct stopping of the motor running at any selected number of revolutions is released by the signal of the surveillance device, in the present embodiment by the photocell 4.
  • the positive signal voltage of the photocell 4 is delivered to the base of the transistor T switched between the two collecting wires 11 and 12, which transistor T becomes thereby conducting and simultaneously switches the transistor T, into the conducting state.
  • the condenser C discharges now quickly by means of the transistor T, and the resistance R,,,, so that the threshold-voltage cannot build up on the transistor T,, as long as the signal voltage is present at the photocell 4.
  • the transistor T is maintained in a conducting state in the positive range'of the half-waves of the voltages V, and V This is in effect upon performed ignition of the diode SCR,, which controls by means of the diodes D, and D, the emitter of the transistor T,.
  • the emitter of the transistor T (collection conduit ll of the circuit) can then become negative relative to the joint neutral wire, if V is smaller than V
  • an advance is caused during the charging of the condenser C, relative to the occurrence of a positive voltage at the anode of the diode SCR, whereby a voltage can be applied at its grid, which opens the transistor SCR, for the entire duration of the positive half-wave.
  • V must be the advancing phase relative to FIG. 3 discloses an examination circuit, by which it can be determined, which phase is the advancing phase.
  • the examination circuit comprises the series arrangement coordinated to the phase V and comprising a condenser C and resistance R and the series arrangement coordinated to the phase V comprising a resistance R and condenser C and a switching arrangement with the transistors T and T as well as an incandescent lamp 13, which is connected, on one side, by means of diodes l4 and 15 to the phases V, and V, and, on the other side, to the collectors of the transistors T and T
  • the base of the transistor T is connected by means of a resistance R and R to the switching point between the resistance R and the condenser C and the resistance 31 and condenser 31, respectively, while the emitter of the transistor T is connected with the base of the transistor T
  • the emitter of the transistor T is connected to the neutral wire 0, with which are connected also the resistance R and the condenser C
  • the transistor T does not receive a signal, if the phase V, advances for, by example, of the phase V and consequently the incandescent lamp 13 does not light up.
  • the transistors T and T become conducting and the incandescent lamp 13 lights up.
  • the incandescent lamp 13 lights up also upon omission of a phase, however, with a weaker light.
  • a delivering device for threads on weaving machines, knitting machines, or the like comprising a motor
  • a thread supply surveillance device for stopping said motor upon reaching a nominal-thread supply
  • said motor comprising an asynchronous twophase motor
  • said surveillance device emitting a motor stopping-command signal in both phases in the stopping position
  • said diodes determined for the conduit of the positive halfwaves are controllable in dependency upon said command signal of said surveillance device.
  • the delivering device as set forth in claim 3, further comprising means for moving said negative half-waves of the phase with a time-lag over said controllable diode in said exciter current circuit of the phase moving ahead in phase, and for locking by said command signal.
  • the signal voltage of the latter releases an occurrence of a locking voltage at the grids of said controlled diodes.
  • the delivering device as set forth in claim 5, which includes a transistorized time switching circuit with a resistance operatively connected to said current valve circuit such that the length of the opening times of said controllable diodes falling into the positive half-waves is adjustable by it kt k

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Stopping Of Electric Motors (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
US29042A 1969-06-11 1970-04-16 Delivery device for threads on weaving machines, knitting machines, or the like Expired - Lifetime US3670976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691929485 DE1929485A1 (de) 1969-06-11 1969-06-11 Liefervorrichtung fuer Faeden an Webmaschinen,Strickmaschinen od.dgl.

Publications (1)

Publication Number Publication Date
US3670976A true US3670976A (en) 1972-06-20

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ID=5736624

Family Applications (1)

Application Number Title Priority Date Filing Date
US29042A Expired - Lifetime US3670976A (en) 1969-06-11 1970-04-16 Delivery device for threads on weaving machines, knitting machines, or the like

Country Status (6)

Country Link
US (1) US3670976A (de)
CH (1) CH507400A (de)
DE (1) DE1929485A1 (de)
FR (1) FR2045970A1 (de)
GB (1) GB1295734A (de)
SE (1) SE355118B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796385A (en) * 1972-05-24 1974-03-12 Rosen K Thread delivery method and apparatus
US3798929A (en) * 1972-11-22 1974-03-26 Stop Motion Devices Corp Control means for filament storage devices
US3853153A (en) * 1972-06-30 1974-12-10 Rueti Te Strake Bv Device for intermittently supplying measured weft yarn lengths to the weft inserting device of a shuttleless weaving machine
US4132368A (en) * 1976-10-28 1979-01-02 Sulzer Brothers Limited Drive for a yarn feeder for a textile machine
US4188902A (en) * 1979-05-18 1980-02-19 The Singer Company Bobbin thread run-out detectors
WO1982004446A1 (en) * 1981-06-17 1982-12-23 Peeters Johan T Woof preparation device for pneumatic looms
WO1983000137A1 (en) * 1981-07-14 1983-01-20 Bonas Machine Co Weft yarn metering device
US4381807A (en) * 1979-08-10 1983-05-03 Nissan Motor Co., Ltd. Shuttleless loom weft detaining device
US4386633A (en) * 1979-06-22 1983-06-07 Tsudakoma Kogyo Kabushiki Kaisha Weft reservoir for an alternate two-pick change type fluid jet shuttleless loom
EP0460699A1 (de) * 1988-12-07 1991-12-11 Iro Ab Fadenspeicher- und -liefervorrichtung
US5740974A (en) * 1993-04-21 1998-04-21 Sipra Patententwicklungs-U. Beteilungsgesellschaft Mbh Yarn feeding device for a textile machine, especially a knitting machine
US5894744A (en) * 1995-05-08 1999-04-20 Fabschitz; Heinrich Speed control apparatus for yarn winding storage drum
CN102704168A (zh) * 2012-06-08 2012-10-03 慈溪太阳洲纺织科技有限公司 针织机上的输线轮

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7209278A (de) * 1972-06-30 1974-01-02
DE2517928A1 (de) * 1975-04-23 1976-11-04 Jean Doat Verfahren und vorrichtung zur herstellung von konzentriertem extrakt
SE408890B (sv) * 1977-11-14 1979-07-16 Aros Electronics Ab Sett och apparat for styrning av en tradmatningsanordning
JPS57101040A (en) * 1980-12-11 1982-06-23 Nissan Motor Weft yarn storing apparatus of shuttleless loom
JPS59125946A (ja) * 1982-12-27 1984-07-20 津田駒工業株式会社 流体噴射式織機用多色自由交換型緯糸貯留装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914262A (en) * 1955-02-11 1959-11-24 Leonard E Ludvigsen Potentiometer coil winding machine
US2981491A (en) * 1957-12-13 1961-04-25 Gen Electric Wire dispensing apparatus
US3225446A (en) * 1961-10-31 1965-12-28 Sobrevin Soc De Brevets Ind Et Method and apparatus for handling filaments
US3233397A (en) * 1962-07-05 1966-02-08 British Insulted Callender S C Apparatus for controlling the tension in a flexible material as it is being wound onto or unwound from a drum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914262A (en) * 1955-02-11 1959-11-24 Leonard E Ludvigsen Potentiometer coil winding machine
US2981491A (en) * 1957-12-13 1961-04-25 Gen Electric Wire dispensing apparatus
US3225446A (en) * 1961-10-31 1965-12-28 Sobrevin Soc De Brevets Ind Et Method and apparatus for handling filaments
US3233397A (en) * 1962-07-05 1966-02-08 British Insulted Callender S C Apparatus for controlling the tension in a flexible material as it is being wound onto or unwound from a drum

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796385A (en) * 1972-05-24 1974-03-12 Rosen K Thread delivery method and apparatus
US3853153A (en) * 1972-06-30 1974-12-10 Rueti Te Strake Bv Device for intermittently supplying measured weft yarn lengths to the weft inserting device of a shuttleless weaving machine
US3798929A (en) * 1972-11-22 1974-03-26 Stop Motion Devices Corp Control means for filament storage devices
US4132368A (en) * 1976-10-28 1979-01-02 Sulzer Brothers Limited Drive for a yarn feeder for a textile machine
US4188902A (en) * 1979-05-18 1980-02-19 The Singer Company Bobbin thread run-out detectors
US4386633A (en) * 1979-06-22 1983-06-07 Tsudakoma Kogyo Kabushiki Kaisha Weft reservoir for an alternate two-pick change type fluid jet shuttleless loom
US4381807A (en) * 1979-08-10 1983-05-03 Nissan Motor Co., Ltd. Shuttleless loom weft detaining device
WO1982004446A1 (en) * 1981-06-17 1982-12-23 Peeters Johan T Woof preparation device for pneumatic looms
WO1983000137A1 (en) * 1981-07-14 1983-01-20 Bonas Machine Co Weft yarn metering device
EP0460699A1 (de) * 1988-12-07 1991-12-11 Iro Ab Fadenspeicher- und -liefervorrichtung
US5740974A (en) * 1993-04-21 1998-04-21 Sipra Patententwicklungs-U. Beteilungsgesellschaft Mbh Yarn feeding device for a textile machine, especially a knitting machine
US5894744A (en) * 1995-05-08 1999-04-20 Fabschitz; Heinrich Speed control apparatus for yarn winding storage drum
CN102704168A (zh) * 2012-06-08 2012-10-03 慈溪太阳洲纺织科技有限公司 针织机上的输线轮

Also Published As

Publication number Publication date
CH507400A (de) 1971-05-15
GB1295734A (de) 1972-11-08
FR2045970A1 (de) 1971-03-05
SE355118B (de) 1973-04-02
DE1929485A1 (de) 1970-12-17

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