US3911656A - Device for surveying thread breakage, especially for automatic connecting devices in spinning machines - Google Patents

Device for surveying thread breakage, especially for automatic connecting devices in spinning machines Download PDF

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Publication number
US3911656A
US3911656A US430797A US43079774A US3911656A US 3911656 A US3911656 A US 3911656A US 430797 A US430797 A US 430797A US 43079774 A US43079774 A US 43079774A US 3911656 A US3911656 A US 3911656A
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United States
Prior art keywords
traveller
sensor
carriage
spinning
stop
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Expired - Lifetime
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US430797A
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English (en)
Inventor
Louis Vignon
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HEBERLIEN HISPANO
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HEBERLIEN HISPANO
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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
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/145—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements set on carriages travelling along the machines; Warning or safety devices pulled along the working unit by a band or the like

Definitions

  • ABSTRAP CT A device for surveying thread breakage in spinning machines, consisting of a cyclically moved carriage which carries a first sensing device by means of which the movement of the traveller on the ring is sensed and a second sensing device by means of which the position of the first sensing device with respect to the rings of the spinning machine is sensed, and a switching device which is controlled by said second sensing device and which activates said first sensing device during each passage past the ring or the traveller respectively of a spinning station. 1f the signal from the rotating traveller is absent due to thread breakage, this will induce stopping of the carriage and start of a thread connecting device mounted on the carriage.
  • the present invention relates to a device for surveying thread breakage, especially for automatic yarn connecting devices on spinning machines, which surveying device is moved cyclically along the individual spinning stations on a carriage and which is stopped by actuation of a stopping device.
  • an electromagnetic thread sensor on the level of the traveller or respectively of the ring carrying the traveller which, for activating the stop device upon thread breakage, is connected with the latter;
  • the thread sensor is provided with a switching device for activating the sensor function
  • a position sensor i for determining the actual relative position of the thread sensor with respect to the traveller or to the ring 'of each spinning station;
  • the use of the electromagnet thread sensor according to the present invention assures especially, because of the relatively wide influence zone of at least several millimeters of the rotating traveller of each station, reliable sensing of thread breakage. It is possible in this way to reduce the circuitry expenditure of the surveying device as well as the requirements as to precision of the position senser in a most simple way.
  • the position sensor is provided in the form of an electromagnetic sensor, since then both sensors can be adjusted to each other as far as sensitivity and influence width are concerned.
  • the invention can be realized in a particularly simple manner if the thread sensor comprises an induction coil, if a sensor coil is arranged in the field of the induction coil and if the induction coil and the sensor coil upon passage past a spinning station are placed so close to the movement path of the traveller that the field of the induction coil can be modulated by the rotating traveller. It is especially the use of an induction coil instead of the permanent magnet provided in the known systems which makes possible in a most simple manner adjusting of the transmitted signals and adaptation to various operating conditions. Furthermore, the switching on and off of the surveying device is effected in'a simple manner by switching on or respectively off of the direct current by the induction coil.
  • a switching device which disconnects the current through the induction coil as soon as the same remains stationary in front of a traveller for a predetermined period of time.
  • the safety of operation of the surveying device can be furthermore improved if, between the sensor coil and the stop device for the carriage, there is provided at least one filter for filtering and for transmitting the signals induced by the traveller. Since the frequency of the traveller is already known, it is possible by accordingly tuning the filter to filter out exactly the frequency produced by the traveller and to transmit it to the stopping device for further evaluation whereas other signals, such, as for example, the impulses produced by carriage movement, can be retained.
  • FIG. 1 shows schematically the arrangement of the bobbins of a ring spinning machine
  • FIG. 2 shows a top elevation of the arrangement according to FIG. 1, but with a carriage for receiving an automatic thread twisting connecting device,
  • FIG. 3 shows a sensor with the features of the present invention at an enlarged scale
  • FIG. 4 shows the block circuit scheme of a surveying device of the present invention
  • FIG. 5 shows the circuit arrangement for feeding the sensor according to FIG. 3.
  • bobbins 1 are arranged on the frame 2 of a ring spinning machine and are supplied with yarn by a stretching device (not shown) via travellers 3.
  • each traveller 3 rotates on the ring 5 of a ring bank 6 associated therewith.
  • an electromagnetic thread sensor 8 which surveys the rotation of traveller 3 and therefore also the readiness for operation of the individual stations.
  • a position sensor 9 which determines by surveying marks 10 on the frame 2 if, in operation, the thread sensor 8 is situated immediately adjacent one of the rings 5.
  • the position sensor 9 is, just as the thread sensor 8, provided in the form of an electromagnetic system, but in certain application fields, also other, for example mechanical or electrooptical, arrangements are possible for the position sensor 9. If the surveying device only serves for indicating thread breakage or for counting thread breakages, it may of course be placed on a separate carriage without a thread twisting connecting device.
  • the thread sensor 8 comprises an induction coil 11 which is arranged above a sensor coil 12 on an iron core 13 common to both coils.
  • the induction coil is in this case thus fed with direct voltage such that upon passage of the core 13 past a rotating traveller 3, the field of coil 11 is modulated and thereby voltage is induced in the sensor coil 12.
  • the traveller 3 is immobilized because of thread breakage, no voltage at all is induced in the sensor coil by the field of the induction coil 11 so that the lack of a signal permits the conclusion that there is thread breakage.
  • the course of operation of the surveying device can be seen from the block circuit scheme according to FIG. 4.
  • a circuit arrangement 14 for switching on the thread sensor is actuated by position sensor 9.
  • the stopping device 16 is fed with a stop signal via a switching conductor 15.
  • the thread sensor 8 upon approach to one of the rotating travellers 3, also delivers a signal to the stop device 16 via filter 17, whereby the stop device 16 continues to supply the motor 18 for driving the carriage with voltage so that the carriage is moved on to the next bobbin.
  • the filter 17 is constructed so that the thread sensor 8 only delivers to the stopping device 16 signals with a frequency corresponding to the rotation of the traveller and so that disturbing signals are suppressed in a most simple manner.
  • the induction coil 11 (FIG. 3) of the thread sensor 8 is fed with direct current, there is a danger that, if the carriage is stopped in front of a station for a longer period of time, the traveller 3 or the ring 5 is magnetized whereby the signals received by the thread sensor would be modified.
  • a disconnecting device 19 which is actuated by the position sensor 9 at the same time as the switching device 14 and again disconnects the switching device 14 and therefore also the thread sensor 8 after a predetermined period of time.
  • FIG. 5 shows in detail the circuit of the thread sensor 8 as well as of the filter 17.
  • a direct current source 20 which is connected with the induction coil 11 via collector resistance 21 of a transistor 22.
  • a control input 23 is thus connected via base resistance 24 with the base of transistor 22 that corresponding control signals, for example produced by position sensor 9 or by switching-off device 19, makes it possible to control the current flow through induction coil 11.
  • the current flow can be controlled in intensity by the induction coil 11 so that also adaptation of the surveying device to different types of travellers 3 or to varying distances between the thread sensor 8 and the traveller 3 (FIG. 2) is rendered possible.
  • the high pass filter 17 comprises two condensers 25, 26 as well as a resistance 27.
  • the filter is then given such dimensions that the high frequency signals produced by a rotating traveller are transmitted to an amplifier 28 and distrubing voltages of low frequency are short-circuited.
  • carriage means for cyclically moving along the individual spinning stations; signal responsive stop means for stopping said carriage; activatable electromagnetic sensor means carried by said carriage for, when activated, electromagnetically surveying traveller rotation sequentially at each station and passing a stop signal to said stop means upon detection of thread breakage as electromagnetically sensed from the condition of a traveller; switch means for activating said electromagnetic sensor means; position sen-,
  • sor means carried by said carriage for determining the actual position of said electromagnetic sensor means with respect to the traveller of each spinning station and for controlling said switch means to activate said thread sensor during each passage past the traveller of a spinning station.
  • said electromagnetic sensor means comprises an induction coil connectable with a direct current source through said switch means, and a sensor coil arranged in the field of said induction coil, said coils being arranged on said carriage means such that, upon passage past a spinning station, the field of the induction coil will be altematingly modulated by the rotating traveller of the spinning station, the sensor coil being connected to said stop means for passing thereto the resulting signal induced in said sensor coil.
  • Apparatus as claimed in claim 2 further comprising filter means between said sensor coil and said stopping means for delivering to said stopping means only signals of predetermined chacteristics related to the rotation of said traveller.
  • Apparatus as claimed in claim 2 further comprising disconnecting means for automatically interrupting current flow through said induction coil after said switch means has been closed for a predetermined time, so as to prevent magnetization of the traveller of a spinning station at which said carriage means may be stopped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US430797A 1973-01-04 1974-01-04 Device for surveying thread breakage, especially for automatic connecting devices in spinning machines Expired - Lifetime US3911656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5873A CH565702A5 (en。) 1973-01-04 1973-01-04

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US3911656A true US3911656A (en) 1975-10-14

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US430797A Expired - Lifetime US3911656A (en) 1973-01-04 1974-01-04 Device for surveying thread breakage, especially for automatic connecting devices in spinning machines

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US (1) US3911656A (en。)
JP (1) JPS49100338A (en。)
BE (1) BE809423A (en。)
BR (1) BR7310327D0 (en。)
CA (1) CA1003715A (en。)
CH (1) CH565702A5 (en。)
DE (1) DE2336079A1 (en。)
ES (1) ES422020A1 (en。)
FR (1) FR2213358B3 (en。)
GB (1) GB1404733A (en。)
IT (1) IT1002576B (en。)
SU (1) SU522809A3 (en。)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058966A (en) * 1975-08-07 1977-11-22 W. Schlafhorst & Co. Device for protecting tangential drives of a textile machine
US4122657A (en) * 1976-11-05 1978-10-31 Zellweger, Ltd. Apparatus for monitoring for thread breakage a continuous sequence of work positions on a textile machine
US4676056A (en) * 1985-04-17 1987-06-30 Zinser Textilmaschinen Gmbh Thread-break monitor for ring-spinning and ring-twisting machines
CN105624858A (zh) * 2015-12-09 2016-06-01 王建波 细纱在线检测用移动小车
CN106087152A (zh) * 2016-08-24 2016-11-09 宁夏如意科技时尚产业有限公司 细纱弱捻和断线的检测设备以及检测方法
CN111996633A (zh) * 2020-07-31 2020-11-27 江苏国望高科纤维有限公司 一种纱线假捻加弹的生产方法及纱线假捻加弹过程中过尾接头的检测方法
CN115233345A (zh) * 2022-07-06 2022-10-25 杭州临港化纤有限公司 一种加弹机断线检测方法、系统、存储介质及智能终端

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0480898A1 (fr) * 1990-10-04 1992-04-15 Barco Automation, Naamloze Vennootschap Procédé de mesure pour la surveillance et la commande de métiers à filer ou à retordre à anneaux et curseurs, et appareil de mesure de la vitesse de rotation des fils entraînés par les curseurs
CZ308004B6 (cs) * 2018-01-31 2019-10-16 Rieter Cz S.R.O. Způsob polohování obslužného zařízení spřádacího stroje, zařízení k jeho provádění a spřádací stroj
CN114032631B (zh) * 2021-10-14 2022-10-21 浙江康立自控科技有限公司 一种纺机接头装置定位方法及定位机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930179A (en) * 1958-11-03 1960-03-29 Adams Inc Control system for textile machines
US3102378A (en) * 1961-02-28 1963-09-03 Adams Inc Textile strand control device
US3672143A (en) * 1970-10-20 1972-06-27 Leesona Corp Doffing apparatus and method
US3751893A (en) * 1971-10-29 1973-08-14 Leesona Corp Strand detection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930179A (en) * 1958-11-03 1960-03-29 Adams Inc Control system for textile machines
US3102378A (en) * 1961-02-28 1963-09-03 Adams Inc Textile strand control device
US3672143A (en) * 1970-10-20 1972-06-27 Leesona Corp Doffing apparatus and method
US3751893A (en) * 1971-10-29 1973-08-14 Leesona Corp Strand detection

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058966A (en) * 1975-08-07 1977-11-22 W. Schlafhorst & Co. Device for protecting tangential drives of a textile machine
US4122657A (en) * 1976-11-05 1978-10-31 Zellweger, Ltd. Apparatus for monitoring for thread breakage a continuous sequence of work positions on a textile machine
US4676056A (en) * 1985-04-17 1987-06-30 Zinser Textilmaschinen Gmbh Thread-break monitor for ring-spinning and ring-twisting machines
CN105624858A (zh) * 2015-12-09 2016-06-01 王建波 细纱在线检测用移动小车
CN105624858B (zh) * 2015-12-09 2018-02-27 王建波 细纱在线检测用移动小车
CN106087152A (zh) * 2016-08-24 2016-11-09 宁夏如意科技时尚产业有限公司 细纱弱捻和断线的检测设备以及检测方法
CN111996633A (zh) * 2020-07-31 2020-11-27 江苏国望高科纤维有限公司 一种纱线假捻加弹的生产方法及纱线假捻加弹过程中过尾接头的检测方法
CN115233345A (zh) * 2022-07-06 2022-10-25 杭州临港化纤有限公司 一种加弹机断线检测方法、系统、存储介质及智能终端
CN115233345B (zh) * 2022-07-06 2023-11-17 杭州临港化纤有限公司 一种加弹机断线检测方法、系统、存储介质及智能终端

Also Published As

Publication number Publication date
SU522809A3 (ru) 1976-07-25
CA1003715A (en) 1977-01-18
IT1002576B (it) 1976-05-20
CH565702A5 (en。) 1975-08-29
GB1404733A (en) 1975-09-03
BR7310327D0 (pt) 1974-09-24
FR2213358A1 (en。) 1974-08-02
ES422020A1 (es) 1976-04-01
BE809423A (fr) 1974-05-02
DE2336079A1 (de) 1974-07-18
JPS49100338A (en。) 1974-09-21
FR2213358B3 (en。) 1976-10-22

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