US3908347A - Process and apparatus for the control of spinning machines - Google Patents

Process and apparatus for the control of spinning machines Download PDF

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Publication number
US3908347A
US3908347A US444162A US44416274A US3908347A US 3908347 A US3908347 A US 3908347A US 444162 A US444162 A US 444162A US 44416274 A US44416274 A US 44416274A US 3908347 A US3908347 A US 3908347A
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Prior art keywords
thread
sensor
time
breakages
spinning stations
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Expired - Lifetime
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US444162A
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English (en)
Inventor
Louis Vignon
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Heberlein Hispano SA
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Heberlein Hispano SA
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • ABSTRACT Apparatus for controlling a spinning machine having a plurality of spindles in a plurality of individual spinning stations is provided either with sensors allocated to the spindles for surveying thread breakages or with a sensor that cyclically traverses the spinning stations.
  • the sensor or sensors signal the number of breakages during a predetermined time unit to a counter.
  • the resulting value, together with a limit value delivered by a preselection device is fed to a comparison device.
  • a signal is delivered to an adjusting device which proportionally reduces or increases the speed of the spindles.
  • this together with an automatic thread knotting device may traverse the spinning stations.
  • the counter and a cooling matrix travel with the sensor and are arranged to transmit signals to a stationary interrogator which feeds the information to the comparison device.
  • the cyclically moving unit transmits a signal to a stationary switching device controlling a time transducer each time the knotting device completes a cycle, the outputs of the switching device and time transducer being fed to the comparison device.
  • This invention relates to a method of and an apparatus for controlling spinning machines having a number of spinning stations, the spindles of which are rotated by a spindle driving device, and at least one automatic thread-knotting device movable along the spinning stations.
  • this problem is primarily resolved by continuously surveying the number of thread breakages in the individual spinning stations and comparing it with a predeterminable limit value, and depending on whether the said value exceeds or falls short of the limit value, the speed of the spindle drive device is reduced or increased.
  • the invention can be realized in a particularly simple manner if there is provided at least one sensor for determining the number of thread breakages in the individual spinning stations as well as a counting 'and/or comparing device fed by the sensor for comparing the number of thread breakages with at least one predetermined limit value and if at least one signal device controlled by the comparing device is provided for controlling a spindle driving device for reducing the spindle speed upon increase of the number of thread breakages and for increasing the spindle speed upon decrease of the number of thread breakages.
  • an individual thread sensor can be provided for each spindle.
  • economies it may however also be advantageous in certain practical cases to provide for a plurality of spinning stations a common thread sensor movable cyclically along the stations.
  • the thread sensor may be continuously connected with the counting and/or comparing device or else be provided with a storage device in order to reduce the number of transmission conductors, the storage device registering the thread breakages and transmitting in certain time intervals their number to stationary interrogators which deliver the positioning signals to the adjusting device.
  • iron cores are particularly suitable which can be magnetized or the magnetic polarity of which can be reversed since these iron cores may be interrogated by electromagnetic sensors as well as used for actuating relay contacts, especially reed relays.
  • Control can then be effected particularly rapidly and precisely by means of an adjusting device which contains, as active element, a stepping motor.
  • the spindle speed can be influenced by means of an on-load switch or by a potentiometer.
  • FIG. 1a shows a schematic representation of a spinning machine with a number of spinning stations provided with a control device for the spindle speed
  • FIG. lb shows a modification of the spinning machine of FIG. la
  • FIG. 2 is a schematic representation of an electrical control circuit
  • FIG. 3 is a schematic representation of a modification of the control circuit of FIG. 2.
  • FIG. 1a shows schematically a spinning machine 1 with a plurality of spindles 2 arranged in a plurality of individual spinning stations. On each of the spindles 2, there is provided a sensor 3 for surveying thread breakages. By means of a transmission conductor 4, thread breakages are signalled to a counting device 5 which determines the number of thread breakages during a predetermined time unit; The resulting value is fed, to-
  • a signal is delivered to an adjusting device 8 which proportionally reduces or increases the speed of a spindle driving device 10 via a control conductor 9.
  • the spindle driving device 10 for example drives all the spindles 2 by means of a schematically shown tangential belt 11 so that speed increase or reduction of the spindle driving device 10 also effects increase or reduction of the speed of all spindles 2. In this manner, considerable safety of the spinning machine in operation is assured. Thereby, an automatic thread knotting device 13 moving cyclically along the spinning stations on a rail 12 can in time repair all occurring thread breakages. The thread knotting device 13, upon registration of a thread breakage by a sensor 3, is stopped in front of the spinning station concerned and activated for starting the knotting procedure.
  • FIG. 1b shows another embodiment of the present invention which has only one sensor 3 with a knotting device 13.
  • the transmission of information on thread breakages is the same as in FIG. lla.
  • the signals transmitted by the sensor 3 are only used for controlling the comparison device 7. It is, however, advantageous in certain cases to use the sensors 3 at the same time for activating the thread knotting device.
  • the circuit elements shown in the block circuit diagram such as counting device 5, preselection device 6', comparison device 7 and adjusting device 8 may be provided in a known way for analogue as well as digital counting of thread breakages and for effecting the comparison with the limit value.
  • the sensors 3 may, of course, also not be associated respectively with individ' ual spinning stations, but alternatively with a plurality of spinning stations, as is for example the case in the following example:
  • FIG. 2 shows a modified example of a control device in which a sensor 3a moving cyclically along a plurality of spinning stations for surveying transmits, upon each passage past a stationary interrogator 14, the determined number of thread breakages.
  • the sensor 3a in this case has a known electromagnetic measuring element 15 which, upon movement past the individual spinning stations, determines thread breakages by surveying the traveller rotation in each spinning station.
  • a counter 16 is connected with the measuring element 15 which adds the thread breakage impulses delivered by the measuring element and transmits them to a coding matrix 17.
  • the coding matrix itself is connected with several coils 18 which induce or reverse magnetic polarity in soft iron cores 19 to represent the actual amount in the counter in binary code.
  • the soft iron cores 19 assure reliable storage of the actual counter result and at the same time make it possible in a simple manner to transmit the information to the interrogator 14 upon cyclic passage past the, same.
  • four reed contacts 20 are arranged on the level of the soft iron cores at the same distances between each other as between the iron cores.
  • one or several reed contacts 20 are closed and thereby corresponding information transmitted without mechanical connection with sensor 3a.
  • a coil 21 which is so excited after the measured value has been transmitted to the interrogator 14 that a contact 22 'on counter 16 is closed to reset the counter to zero, thereby preparing it for a new cycle.
  • the determined number of thread breakages as well as the limit value stored in the preselection device 6 is transmitted to comparing device 7 via amplifiers 23.
  • a signal for reducing or increasing the speed of the spin-- dle driving device 10 is delivered, depending on whether it exceeds or is less than the limit value.
  • This signal is constituted so that, depending on the required speed variation, a signal for left-hand or right-hand rotation is delivered to a step motor 24 provided in the adjusting device.
  • the stepping motor 24 itself is connected mechanically with the slide of a potentiometer 25 which is in the supply circuit of the spindle driving device 10 so that the impulses delivered by the comparison device 7 at any time effect the desired reduction or increase of spindle speed.
  • any other type of positioning unit for example electromechanical or hydraulic
  • the control of the spindle driving device 10 need not necessarily be effected by means of a potentiometer, but may also be effected by any other type of control device, such as for example an on-load switch or a thyristor control device.
  • two lamps 26 and 27 are controlled, one of which is lighted upon excessive spindle speed and the other one upon too low spindle speed.
  • the lamps therefore at any time inform the operating staff if the control device is in operation and if there is a deviation from the predetermined limit value in one or the other direction, of the necessity of an alteration of the limit value. If such deviations from the limit value are frequently observed in one or the other direction, the necessity of an alteration of the 4 limit value stored in the preselection device 6 may be concluded therefrom.
  • the sensor 3a is fixed to the thread knotting device 13 with which it is electrically connected by means of a signal conductor 28. In this way, it is possible to limit the movement of sensor 3a along the spinning stations to a minimum since the knotting device (as shown in FIG. l) in any event moves simultaneously along the spinning stations.
  • the device shown in FIG. 3 is based on the indirect registration of the thread breakages by measuring the time necessary for one or several cycles of a thread knotting device 30.
  • the number of thread breakages admissible for an optimal working rate of spinning machines is 60 thread breakages per 1000 spindles per hour, i.e., l5 thread breakages per hour for 250 spindles or 1.5 thread breakages per 6-minute cycle of the thread knotting device.
  • the time necessary for knotting one thread is 1 minute so that, for a complete cycle with corresponding tolerance difference, there results a time consumption of 8 minutes.
  • the time is preselected on a time transducer 31 which, at the beginning of each cycle by the thread knotting device, is reset to zero by means of magnet 32,
  • a signal is delivered to a comparison device 36 which is also connected to the switching device 34 by way of a switch 42.
  • the comparison device 36 itself delivers control signals to a step motor 37 to adjust potentiometer 38 and to reduce the speed of the spindle driving motor 39. Furthermore, a lamp 40 is activated which indicates reduction of the spindle speed.
  • the thread knotting device 30 activates the switching device 34 via magnet 32 and reed relay 33 before 8 minutes have passed, the switching device delivers to the comparison device 36 a signal which increases the spindle speed and activates lamp 41 to indicate this condition.
  • the switching device 34 resets the time transducer 31 to zero via control conductor 35 so that surveying of the next cycle is initiated.
  • the switch 42 is opened upon the running out of the time transducer 31 and is closed again upon its resetting to zero.
  • the time comparison may also be effected for the time needed for a plurality of cycles of the knotting device. In this case, it would only be necessary to regulate the time transducer accordingly and to provide in the switching device 34 a counter for preselection and determination of the desired number of cycles.
  • a method of controlling spinning machines having a number of spinning stations, the spindles of which are rotated by means of a spindle driving device, and at least-one automatic thread knotting device movable along the spinning stations comprising the ing a number of spinning stations, the spindles of which are rotated by a means of a spindle driving device, and said apparatus comprising at least one sensor for cyclically surveying the individual spinning stations in said spinning machine, means for determining the number of thread breakages in each cyclic survey, comparison means for comparing said number of thread breakages with at least one predetermined limit value, and a signal device controlled by the said means for adjusting said spindle driving device for reducing the spindle speed upon increase of the number of thread breakages and for increasing the spindle upon reduction of the number of thread breakages.
  • the apparatus according to claim 2 including an automatic thread knotting device, adapted to cyclically move past a number of spinning stations together with said sensor and a surveying station constituting said comparison means for comparing the time taken by said thread knotting device for one cycle with a predetermined time.
  • said surveying station comprises a time switching installation including a switching device for activating a time measuring process of predeterminable duration upon the start of each cycle of said thread knotting device and for stopping the time measuring process after termination of the cycle, and a time transducer controlled by said switching device connected together with said switching device by way of said comparison means, to control said spindle driving device so as to switch to a higher spindle speed if the time needed by said thread knotting device is shorter than the predetermined time and to a lower spindle speed if the time needed by said knotting device is longer than the predetermined time.
  • the apparatus including a counting device, said sensor being connected with said counting device for adding thread breakages registered by said sensor, means for delivering from said counting device control signals, depending on the number of thread breakages during a determined period of time and a stationary interrogator connected to said comparison means and adapted to receive said control signals.
  • the apparatus including a counting device, said sensor being connected with said counting device for adding thread breakages registered by said sensor, means for delivering from said counting device control signals, depending on the number of thread breakages during a predetermined period of time, and a stationary interrogator connected to said comparison means and adapted to receive said control signals, said counting device being fixed to said sensor and movable along said spinning stations together with said sensor.
  • said counting device comprises a storage device for registering the number of thread breakages during a predetermined surveying cycle and in which said stationary interrogator is adopted to receive the contents of said storage device after a cycle has been terminated.
  • said storage device comprises a number of iron cores the magnetic polarity of which is determined under the control of said counting device to represent the number of thread breakages during said predetermined time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US444162A 1973-02-20 1974-02-20 Process and apparatus for the control of spinning machines Expired - Lifetime US3908347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH238873A CH555422A (de) 1973-02-20 1973-02-20 Verfahren und vorrichtung zur regelung von spinnmaschinen.

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US3908347A true US3908347A (en) 1975-09-30

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US (1) US3908347A (fr)
JP (1) JPS49110940A (fr)
BR (1) BR7401077D0 (fr)
CH (1) CH555422A (fr)
DE (1) DE2336081A1 (fr)
ES (1) ES423429A1 (fr)
FR (1) FR2218407B1 (fr)
GB (1) GB1466691A (fr)
IT (1) IT1008795B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028869A (en) * 1974-11-23 1977-06-14 Zinser Textilmaschinen Gmbh Spinning machine with automatic service carriage
US4043107A (en) * 1973-07-06 1977-08-23 Leuze-Electronic Kg Arrangement for automatically controlling the travel speed of yarns, filaments, and the like in machines processing the same
US4058966A (en) * 1975-08-07 1977-11-22 W. Schlafhorst & Co. Device for protecting tangential drives of a textile machine
FR2360697A1 (fr) * 1976-08-07 1978-03-03 Schlafhorst & Co Procede et dispositif pour la detection de postes de filage d'un metier a filer qui travaillent de facon defectueuse
US4137699A (en) * 1977-03-31 1979-02-06 Hans Stahlecker Textile machine with devices for determination of the transverse dimension of running yarn
US4221109A (en) * 1976-10-02 1980-09-09 W. Schlafhorst & Co. Traveling thread-joining device
US4676057A (en) * 1985-02-06 1987-06-30 Murata Kikai Kabushiki Kaisha Spinning machine
US4677819A (en) * 1985-03-22 1987-07-07 Hans Stahlecker Method and apparatus for operating an open-end friction spinning machine

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531044C2 (de) * 1975-07-11 1986-04-30 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum Suchen eines Fadenendes auf einer Spule
DE3216218A1 (de) * 1982-04-30 1983-11-03 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Verfahren und vorrichtung zum betreiben einer spinn- oder zwirnmaschine mit einer vielzahl von vorlagepackungen
JPS5986562A (ja) * 1982-06-21 1984-05-18 Aichi Boseki Kk 糸結び監視装置の作動を監視する方法と装置
DE3624212A1 (de) * 1986-07-16 1988-01-28 Tsnii Promy Lubyanykh Volokon Verfahren und anordnung zur steuerung einer spinnmaschine
GB2196351B (en) * 1986-10-15 1990-07-25 Tsnii Promy Lubyanykh Volokon Method and apparatus for controlling a spinning machine
DE3928755A1 (de) * 1989-08-30 1991-03-07 Rieter Ag Maschf Verfahren zur regelung der arbeitsgeschwindigkeit einer ringspinnmaschine
DE3937439A1 (de) * 1989-11-10 1991-05-16 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum bestimmen von wartungsintervallen an einer spinnereimaschine
DE102004053505A1 (de) * 2004-11-02 2006-05-04 Wilhelm Stahlecker Gmbh Verfahren zum Optimieren der Produktionsleistung einer Spinnmaschine
DE102006020787A1 (de) * 2006-05-03 2007-11-22 Saurer Gmbh & Co. Kg Spinnereimaschine mit Drehzahlsteuerung
DE102011112364A1 (de) 2011-09-02 2013-03-07 Oerlikon Textile Gmbh & Co. Kg Offenend-Rotorspinnmaschine

Citations (7)

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Publication number Priority date Publication date Assignee Title
US1412518A (en) * 1920-07-07 1922-04-11 Westinghouse Electric & Mfg Co Control system
US3430426A (en) * 1967-04-18 1969-03-04 Morris M Bryan Jr Monitoring device for spinning frame
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3521441A (en) * 1967-06-05 1970-07-21 Rieter Ag Maschf Process and apparatus for reducing yarn waste in draw-twisters
US3523415A (en) * 1968-09-26 1970-08-11 Parks Cramer Co Apparatus for reporting ends down on textile yarn forming machines
US3523413A (en) * 1968-02-19 1970-08-11 Parks Cramer Co Apparatus and method for detecting and reporting ends down on textile machines
US3831005A (en) * 1971-03-04 1974-08-20 Barmag Barmer Maschf Textile machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1515876A (fr) * 1966-07-18 1968-03-08 Louis Lepoutre & Cie S A Dispositif d'asservissement de la vitesse de machines textiles au taux de casse des fils

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1412518A (en) * 1920-07-07 1922-04-11 Westinghouse Electric & Mfg Co Control system
US3430426A (en) * 1967-04-18 1969-03-04 Morris M Bryan Jr Monitoring device for spinning frame
US3521441A (en) * 1967-06-05 1970-07-21 Rieter Ag Maschf Process and apparatus for reducing yarn waste in draw-twisters
US3523413A (en) * 1968-02-19 1970-08-11 Parks Cramer Co Apparatus and method for detecting and reporting ends down on textile machines
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3523415A (en) * 1968-09-26 1970-08-11 Parks Cramer Co Apparatus for reporting ends down on textile yarn forming machines
US3831005A (en) * 1971-03-04 1974-08-20 Barmag Barmer Maschf Textile machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043107A (en) * 1973-07-06 1977-08-23 Leuze-Electronic Kg Arrangement for automatically controlling the travel speed of yarns, filaments, and the like in machines processing the same
US4028869A (en) * 1974-11-23 1977-06-14 Zinser Textilmaschinen Gmbh Spinning machine with automatic service carriage
US4058966A (en) * 1975-08-07 1977-11-22 W. Schlafhorst & Co. Device for protecting tangential drives of a textile machine
FR2360697A1 (fr) * 1976-08-07 1978-03-03 Schlafhorst & Co Procede et dispositif pour la detection de postes de filage d'un metier a filer qui travaillent de facon defectueuse
US4136511A (en) * 1976-08-07 1979-01-30 W. Schlafhorst & Co. Method and device to determine defectively operating spinning stations
US4221109A (en) * 1976-10-02 1980-09-09 W. Schlafhorst & Co. Traveling thread-joining device
US4137699A (en) * 1977-03-31 1979-02-06 Hans Stahlecker Textile machine with devices for determination of the transverse dimension of running yarn
US4676057A (en) * 1985-02-06 1987-06-30 Murata Kikai Kabushiki Kaisha Spinning machine
US4677819A (en) * 1985-03-22 1987-07-07 Hans Stahlecker Method and apparatus for operating an open-end friction spinning machine

Also Published As

Publication number Publication date
FR2218407A1 (fr) 1974-09-13
FR2218407B1 (fr) 1978-01-06
DE2336081A1 (de) 1974-08-22
IT1008795B (it) 1976-11-30
CH555422A (de) 1974-10-31
JPS49110940A (fr) 1974-10-22
GB1466691A (en) 1977-03-09
BR7401077D0 (pt) 1974-11-05
ES423429A1 (es) 1976-05-16

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