US3801031A - Method and apparatus for monitoring throw-off loop formation on the yarn guiding drum of coil winding machines - Google Patents

Method and apparatus for monitoring throw-off loop formation on the yarn guiding drum of coil winding machines Download PDF

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US3801031A
US3801031A US00192509A US3801031DA US3801031A US 3801031 A US3801031 A US 3801031A US 00192509 A US00192509 A US 00192509A US 3801031D A US3801031D A US 3801031DA US 3801031 A US3801031 A US 3801031A
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yarn
monitoring
traverse
stoppage
stroke
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W Gith
H Kamp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the extent of traverse motion of the yarn is monitored, and the winding operation is interrupted whenever the nominal stroke distance of traverse travel falls short.
  • the width of the traverse is narrowed, sincethe yarn can not longer be guided any more by the grooves of the yarn guiding drum to the lateral reversing points.
  • the sensing elements are periodically and equally acted upon during each of the yarn traverses. Should a throw-off drum looping occur, however, such a control of the sensing elements does not take place or only occurs in limited form.
  • the stoppage device of the winding machine may then be actuated by means of a suitable control mechanism.
  • Apparatus particularly suitable for carrying out this method comprises a stoppage device for the winding machine which is controlled by-an amplifier including an integrating stage for the pulses generated by the sensing element in response to the traversing yarn.
  • variable power as for instance variable amplitude or variable duration, or by such which comprise individual successive energy impulses separated by intervals therebetween
  • the falling-short of a prescribed required value of the output signal of the integrating stage indicates that the required value of the transverse stroke has fallen short inadmissably too frequently.
  • the time constant of the integration stage may be made variable as a function of the winding velocity.
  • changes in the winding velocity in general are determined by changes in the yarn material to be wound, and .which in any case require various adjustments at the winding stations, the changes of the time constants of the integration stage as, a function of the winding velocity may be carried out by hand.
  • an automatic change of the time constant of the integration stage may be obtained by utilizing the relationship between the pulse sequence derived from the yarn and of the constant pulse sequence of a time element, such as the relaxation period of a monostable multivibrator actuated by the yarn-derived pulses.
  • the energy storage device contained in the integration stage is charged from a constant current source and is discharged through a constant current load, wherein the constant current source is controlled by pulses inversely proportional to the yarn velocity.
  • the linear characteristic of the charging and discharging circuit assures that the charge in the energy storage ,device' is made proportional to the yarn velocity. Since, for instance, with lower yarn velocity, the intervals between pulses are greater, it is desirable that the stored energy by greater with lower yarn velocity. This result is achieved by controlling the constant current source by pulses which are inversely proportional to the yarn velocity. For instance, a monostable multivibrator actuated by yarn pulses may serve to produce such pulses which are inversely proportional to the yarn velocity.
  • FIGS. 1 and 2 are schematic side and front elevational views of the construction of a yarn winding station
  • FIG. 3 is a diagram of an intergration circuit
  • FIG. 4 is a diagram of another form of integration circuit adapted for use with various yarn thicknesses.
  • FIG. 5 is a voltage-time curve of voltage pulses derived from yarn travelling at a given speed
  • FIG. 6 is a similar curve of pulses for yarn travelling at double the speed of that shown in FIG. 5;
  • FIG. 7 is a'block diagram of a yarn winding monitoring circuit in accordance with the invention.
  • FIG. 8 is a detailed circuit diagram of the circuit of FIG. 7;
  • FIGS. 9 and 10 are a block diagram and detailed circuit diagram, respectively, of a yarn winding monitoring circuit including a device forautomatic adjustment of the integration time constant;
  • FIGS. 11 and 12 are block and circuit diagrams, respectively, of another form of yarn winding monitoring circuit including facilities for adjusting the integration function to yarn winding velocity.
  • FIGS. 1 and 2 From theschernatically illustrated construction of a yarn winding station in FIGS. 1 and 2, there is seen that the yarn F, originating from the supply winding 1, is guided through various elements of the winding machine and is, eventually wound upon the cross-wound coil or cheese 3 with the aid of the yarn winding drum 2.
  • FIG. 2 shows how the yarn between the last guiding the light sensitive element 5b is interrupted by each I yarn passage or is at least attenuated thereby.
  • a pulse sequence is thus generated as is shown in FIG. 5.
  • the passage of the yarn through the ray of light generates a signal a,.
  • a signal a is produced as a result of the return of the thread.
  • the yarn Upon the occurrence of a drum throw-off loop, the yarn reciprocates, for example, through a traverse stroke indicated at C in FIG. 2. Since in this case, the light barrier 5 is not affected, the regular impulse sequence of FIG. 5 is interrupted. In order to utilize this interruption of the impulse sequence for the purpose of stopping the winding machine, the stoppage device for the winding machine may be controlled by means of an I amplifier which includes an integrating circuit as shown in F IG. 3. As long as the pulses are present, thatis, during a normal winding operation, condenser 6 is being charged as a function of the frequency over resistance 7. Should the pulses fail to occur, the condenser 6 discharges through resistance 8 and a measuring or control device schematically shown at 9.
  • a release magnet may be controlled as a consequence of the decrease of the potential of condenser 6 to under a predetermined value so as to act to stop the winding drive.
  • the time constant of the condenser discharge which is determined by resistance 8 may be so chosen that the stoppage of the winding drive takes place only after a repeated absence of the pulse sequence.
  • a disadvantage of the embodiment shown in FIG. 3 is that the time dependent charge of condenser 6 will result in different condenser charges due to different yarn thicknesses, since the pulse width is a function of the yarn thickness. Thus, the period of discharge of' condenser 6 through resistance 8 is also made dependent on the yarn thickness. In order to avoid this disadvantage, as shown in FIG. 4, condenser 6 may be charged through a diode 10 so fast and practically without delay that the pulse width loses its significance.
  • FIG. 6 would indicate the pulse sequence for double the velocity, that is, for 1,200 m/min. It will be seen therefrom that the condenser 6 of FIG. 4 is being charged up through the pulse sequence in accordance with FIG. 6 twice as frequently as by the pulse'sequence according to FIG. 5. As mentioned above, it is undesirable that the measuring and control device 9 should res-pond each time when the pulse sequence is absent. If, for instance, the discharge period of condenser 6 has been adjusted in such a manner that the winding drive is stopped only after the third absence of the pulse sequence, as in FIG. 5, this would mean that with the velocity according to FIG. 6, the winding drive would be affected only after the sixth interruption of the pulse sequence. In order to eliminate this disadvantage it becomes advantageous to conform the time constant of the integrating circuit to the winding velocity. Accordingly, in the embodiment of FIG. 4 the resistance 11 has been shown as being adjustable.
  • FIGS. 7 and 8 represent a simple embodiment of a circuit arrangement for use with the invention, FIG. 7 illustrating a simplified block diagram for the circuit of FIG. 8.
  • the operating level of the transistor 12a is so fixed by means of adjusting resistance l2e that the said transistor is almost blocked causing thereby only a very small potential drop across its load resistance 12g.
  • the significance of this arrangement is that the collector current, due to the pulses produced at the phototransistor 5b, caused by the traversing yarn, is not decreased to any practical extent, but in fact may be raised to its full amplitude.
  • a. c. potential amplifier which can only be controlled by the pulse potentials produced during the momentary period of dimming of the phototransistor 5b.
  • This unidirectional operating level makes possible the use of a simple Zener diode 13a as a threshold switch 13.
  • condenser 14a is instantly charged up from transistor 14a over the diode 14d.
  • the time constant of the integrating stage is adjusted by means of the resistance l4fso that the discharge current of the condenser l4e through the transistor 15a of the succeeding threshold switch 15 falls below the threshold potential of the Zener diode 15b only when the pulse sequence fails to appear with sufficient frequency.
  • the control current of transistor 15 will also at that time be interrupted, the transistor 15a is blocked and the collector current through the resistance 15c is interrupted, so that the potential drop across this resistance is also collapsed.
  • the transistor 17a of the terminating switch stage 17 receives a control current pulse having a precisely limited length whereby transistor 17a actuates relay 17b.
  • Contact 18a of the AND" stage 18 thereby moves into the circuit-closing position.
  • magnet serving as a stoppage device and as a disconnect for the winding drive may be energized only at the time when contact 18b is in circuit closing position.
  • This contact 18b of the AND stage 18 may be controlled by means of the magnet 19a of a signal generator 19 which indicates the motion of the yarn and which may for instance comprise an electronic yarn monitor.
  • FIGS. 9 and 10 An embodiment containing automatic adjustment of the time constant of the integrating stage as a function of the winding velocity has been illustrated in FIGS. 9 and 10, wherein FIG. 9 is the block diagram for the schematic of FIG. 10.
  • the operating level of the transistor 12a has been adjusted by means of the resistance l2e unidirectionally in the reverse sense.
  • transistor 12a is normally fully conductive so that the potential drop of the load resistance 12a, due to the high collector current, closely corresponds to the full battery potential at the i input terminals. Since transistor 12a under these circumstances cannot be made more conductive, the control pulses appearing across condenser 120 can only act to weaken the collector current of the transistor 12a. While in the embodiment according to FIGS.
  • the transistor 12a in the present instance will be switched as a consequence of the re-brightening of the phototransistor 517 following the yarn passage.
  • the potential threshold of the succeeding Zener diode 13a of the threshold switch 13' may be exceeded and a peak potential may be generated in the following differentiating circuit 22 comprising resistances 22a and 22b as well as the condenser 22c and diode 22d.
  • This peak potential acts to trip the monostable multivibrator 23 whereby transistor 23a becomes conductive and the transistor 23b is blocked.
  • the relaxation period of the monostable multivibrator and of the condenser 23d This relaxation period remains constant.
  • the constant relaxation period of multivibrator 23 may serve as a magnitude standard for the yarn velocity.
  • the constant relaxation period of the multivibrator is represented by the broken line b, in both of the Figures. It will be seen that the constant relaxation period b of the multivibrator in the case of the rapid pulse sequence of FIG. 6 takes up about percent of the pulse sequence period as defined by the broken line and the succeeding dotted line b The constant relaxation period b, of the multivibrator for the slow pulse sequence as in FIG.
  • An integrating stage 23 is connected to point A of the monostable multivibrator 23 wherein the condenser 24f is charged up through the transistor 24a and diode 24d.
  • a negative feedback resistance 240 is connected to transistor 24a which serves to determine the magnitude of the time constant for charging condenser 24f. It is accordingly possible to so adjust resistance 240 that the condenser 24f will be charged up only over a suitably predetermined period. Thus, condenser 24f develops a potential which is proportional to the yarn velocity.
  • a transistor 24g serves as a constant current load for the condenser 24f since the control current through resistors 24i and 24h is constant. As.
  • the transistor 243 has the effect that the charge of condenser 24f leaks off independently of the potential.
  • the potential amplitude of the condenser. 24f remains proportional to the yarn velocity.
  • the potential of the condenser 24f at point B is applied to an impedance transformer 25 comprising transistor 25a, representing only a small load at point B.
  • a fractional potential may be obtained for the control of the transistor 14f from the potential divider 25b and 250.
  • Integrating stage 14' is also connected to point A of the monostable multivibrator 23, which functionally corresponds to the storage stage 14 in FIGS. 7 and SQI-Iere, condenser Me is also instantly charged over transistor 14a and diode 14d.
  • the transistor 14f controls the discharge velocity of the condenser 14a so that the condenser l4e' discharges in proportion to the yarn velocity.
  • the potential of the condenser 14a is supplied to the differentiating circuit 16 by way of the threshold switch 15' now comprising only a Zener diode 15b.
  • the differentiating circuit 16' in this case contains, in addition to the condenser 160, also resistors 16c and 16d as well as diode 16].
  • This differentiating circuit again acts to control transistor 17a of the terminating switching stage 17, the transistor serving to control relay 17b as shown in FIG. 11.
  • the termination of the circuit corresponds to that of FIG. 11.
  • FIGS. 11 and 12 A further, particularly simplified solution for the automatic' adjustment of the integration circuit with respect to the yarn velocity is shown in FIGS. 11 and 12.
  • the condenser of the integrating circuit as shown both in the embodiment of FIGS. 7 and 8 as well as that of FIGS. 9 and 10 had been charged instantly over a diode as in FIG. 4. As already explained, the condenser charge thereby became dependent upon the pulse width and, thus, upon the yarn thickness. If, however, the relationship of the pulse sequence derived from the yarn and that of the constant pulse sequence of the timing circuit such as the relaxation period of the monosta' ble multivibrator according to FIGS. 9 and 10 are used for the purpose of achieving an automatic adjustment of the time constant of the integrating circuit, the pulse width is no longer significant since the potential increase of the respective first pulse a of a pulse sequence is the determining factor. It has already been explained with reference to FIGS.
  • FIGS. 1 1 and 12 up to the monostable multivibrator 23, is the same as that shown in FIGS. 9 and 10.
  • the integrating stage 14 is now connected'at point D to the collector potential of transistor 23b.
  • This collector potential acts to control the transistor 14a" which serves as a constant current source.
  • the transistor 14a charges the condenser 14s" over the diode 14d no longer instantly but rather linearly and inversely proportional to the yarn velocity.
  • Transistor 14]" comprises a constant current load for the condenser l4e", since the control current of the transistor 14f is held constant by resistance 141'" and 1411".
  • the transistor 14f functions such that the charge of condenser l4e leaks off independently of its potential, that is to say, linearly.
  • the potential amplitude of condenser l4e" thus remains inversely proportional to the yarn velocity in spite of further charging pulses.
  • the potential of condenser I42" being inversely proportional to the yarn velocity may be taken off at point C and applied to the differentiating circuit 16' through Zener diode 15b which serves as a threshold switch 15".
  • the Zener diode 15b" is so connected that for the higher charge potential of the condenser 14c", that is, for lower yarn velocity, a longer discharge period will be required for attaining the switching threshold of Zener diode 15b as compared to a lower charge potential.
  • the differentiating circuit 16 as well as the succeeding circuits 17', l8, l9 and 20 correspond in their structure to those of FIGS. 9 and 10.
  • sensing elements in place of the sensing elements described in the exemplified embodiments, for one or both sides of the traverse area, other kinds of sensing elements. These may take a form similar to known capacitive yarn monitors or other types of light barriers. Thus, for example, the light barrier arrangement may be used for monitoring the size of the traverse stroke. Furthermore, sensing elements which utilize the tribo-electric principle may also be applied wherein for instance in a particularly simple case a pin or the like is disposed at the points of reversal in the drum and is contcted by the yarn.
  • Method of monitoring the operation of a yarn winding machine having a yarn receiving coil and a drum for guiding the yarn onto said coil, said yarn having a predetermined reciprocating traverse stroke range, which comprises the steps of monitoring the range of said traverse stroke, and interrupting the yarn winding operation in response to a repeated falling short of said predetermined range.
  • Apparatus for monitoring the operation of a yarn winding machine having a yarn receiving coil and a yarn guiding drum for the receiving coil located adjacent thereto, the guiding drum having means for guiding the yarn onto the receiving coil in a given pattern and providing a traverse for the yarn having a predetermined reciprocating stroke range in respect to the coil, the monitoring apparatus comprising means disposed within the area encompassed by the yarn traverse range for monitoring the predetermined stroke range of the yarn and for producing an output in response to a repeated falling short of said predetermined stroke range, and means for effecting a stoppage of the yarn winding operation of the machine in response to said output of said monitoring means.
  • monitoring means comprises a yarn sensing means for producing a signal in response to the passage of the yarn adjacent thereto with a predetermined stroke range of the yarn being wound.
  • said signal producing means includes means for generating a voltage pulse for each passage of the yarn thereat, and a pulse integrating circuit for said voltage pulses
  • said winding operation stoppage means includes means for responding to the output of said integrating circuit corresponding to a yarn traverse stroke which is repeatedly less than a predetermined value thereof, whereby a stoppage of the winding operation occurs due to a decrease in the yarn traverse stroke.
  • Apparatus according to claim 4 further including energy storage means for said integrating circuit and a timing circuit for controlling said energy storage means, and means for adjusting the time constant of said timing circuit, whereby only a repeated fallingshort of the yarn traverse stoke effects the stoppage of the winding operation.
  • Apparatus according to claim 2 further including means for supplying pulses from said monitoring means dynamically to said operation stopping means.
  • Apparatus for monitoring the operation of a yarn winding machine having a yarn receiving coil and a yarn guiding drum for the receiving coil located adjacent thereto, the guiding drum having means for guiding the yarn onto the receiving coil in a given pattern and providing a traverse for the yarn having a predetermined reciprocating stroke range in respect to the coil,
  • the monitoring apparatus comprising monitoring means disposed within the area encompassed by the yarn traverse range for monitoring the range of the stroke of the yarn, said monitoring means including a yarn sensing means for producing an output signal in response to the passage of the yarn adjacent thereto with a predetermined stroke range of the yarn being wound, means for effecting a stoppage of the yarn winding operation of the machine in response to the output of said sensing means, said sensing means including means for generating a voltage pulse for each passage of the yarn thereat, and a pulse integrating circuit for said voltage pulses, said windingoperation stoppage means including means for responding to the output of said integrating circuit corresponding to a yarn traverse stroke which is repeatedly less than a predetermined value thereof, whereby a stoppage-of the winding operation occurs due to a decrease in the yarn traverse stroke,'energy storage means for said integrating circuit, a timing circuit for controlling said energy storage means, means for adjusting the time constant of said timing circuit, whereby only a repeated fallingshort of the yarn traverse stroke effects the stoppage of the wind
  • Apparatus further including means for generating a constant pulse sequence and means for providing a signal corresponding to the relationship between the potential pulse sequence derived from the yarn passage sensing elements and said constant pulse sequence, and means for automatically adjusting the time constant of said integrating circuit in response to said relationship corresponding signal.
  • saidconstant pulse generating means comprises a monostable multivibrator, and means for actuating said multivibrator in response to pulses due to yarn traverse motion, whereby the time constant of said integrating stage is adjusted as a function of the yarn winding velocity.
  • Apparatus for monitoring the operation of a yarn winding machine having a yarn receiving coil and a yarn guiding drum for the receiving coil located adjacent thereto, the guiding drum having means for guiding the yarn onto the receiving coil in a given pattern and providing a traverse for the yarn having a predetermined reciprocating stroke range in respect to the'coil, the monitoring apparatus comprising monitoring means disposed within.
  • said monitoring means including means including a yarn sensing means for producing an output signal in response to the passage of the yarn adjacent thereto with a predetermined stroke range of the yarn being wound, means for effecting a stoppage of the yarn winding operation of the machine in response to the output of said sensing means, said sensing means including means for generating a voltage pulse for each passage of the yarn thereat, and a pulse integrating circuit for said voltage pulses, said winding operation stoppage means including means for responding to the output of said integrating circuit corresponding to a yarn traverse stroke which is repeatedly less than a predetermined value thereof, whereby a stoppage of the winding operation occurs due to a decrease in the yarn traverse stroke, energy storage means for said integrating circuit, a timing circuit for controlling said energy storage means, means for adjusting the time constant of said timing circuit, whereby only a repeated fallingshort of the yarn traverse stroke effects the stoppage of the winding operation, a constant current source for respectively charging
  • Apparatus according to claim 10, wherein said inversely proportional pulse producing means comprises a monostable multivibrator.
  • Apparatus for monitoring the operation of a yarn winding machine having a yarn receiving coil and a yarn guiding drum for the receiving coil located adjacent thereto, the guiding drum having means for guiding the yarn onto the receiving coil in a given pattern and providing a traverse for the yarn having a predetermined reciprocating stroke range in respect to the coil
  • the monitoring apparatus comprising means disposed within the area encompassed by the yarn traverse range for monitoring the range of the stroke of the yarn and for producing an output in response to the passing of the yarn adjacent thereto, means for effecting a stoppage of the yarn winding operation of the machine in response to the output of said monitoring-means, a logic AND" circuit element electrically disposed between the output of said monitoring means and said operation stoppage means, and means for providing a signal in response to the moving yarn connected to said logic circuit, whereby operation stoppage takes place only when the yarn is moving in the direction of the yarn guiding drum.

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  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US00192509A 1970-10-23 1971-10-26 Method and apparatus for monitoring throw-off loop formation on the yarn guiding drum of coil winding machines Expired - Lifetime US3801031A (en)

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DE19702052117 DE2052117A1 (de) 1970-10-23 1970-10-23 Verfahren und Vorrichtung zur Überwachung der Wickelbildung an der Fadenführungstrommel von Spulmaschinen

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US (1) US3801031A (de)
BE (1) BE774361A (de)
CH (1) CH536251A (de)
DE (1) DE2052117A1 (de)
FR (1) FR2111526A5 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984060A (en) * 1974-03-18 1976-10-05 Maschinenfabrik Schweiter Ag Apparatus to test for the presence of one only thread in textile machines
US4010908A (en) * 1974-07-29 1977-03-08 Owens-Corning Fiberglas Corporation Method and apparatus for handling linear elements
US4031560A (en) * 1975-11-19 1977-06-21 Maresh Richard L Chopped light relay keyer
US4214717A (en) * 1975-06-10 1980-07-29 Nippon Seren Co. Ltd. False reeling preventing apparatus for traverse thread reeling machines
US4866289A (en) * 1985-09-10 1989-09-12 Murata Kikai Kabushiki Kaisha Winding-form inspecting apparatus for wound-yarn packages
US5074481A (en) * 1989-05-25 1991-12-24 W. Schlafhorst Ag & Co. Method and apparatus for monitoring the yarn winding production process
US5074480A (en) * 1987-09-01 1991-12-24 Zellweger Uster Ag Process and apparatus for determining the yarn speed on textile machines
US5676328A (en) * 1996-03-13 1997-10-14 Threlkeld; James O. Method and apparatus for controlling tension in a traveling strand of rubber yarn during traverse winding

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830296A (en) * 1986-06-05 1989-05-16 Murata Kikai Kabushiki Kaisha Automatic winder
DE4025696C2 (de) * 1990-08-14 1999-11-18 Schlafhorst & Co W Verfahren und Einrichtung zum Unterbrechen des einer Kreuzspule zugeführten Garns
DE102007062631B4 (de) 2007-12-22 2018-07-26 Saurer Germany Gmbh & Co. Kg Vorrichtung zur Überwachung einer unerwünschten Fadenwickelbildung in einer Textilmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592400A (en) * 1966-11-23 1971-07-13 Reiners Walter Electronic yarn guard for yarn-winding devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592400A (en) * 1966-11-23 1971-07-13 Reiners Walter Electronic yarn guard for yarn-winding devices

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984060A (en) * 1974-03-18 1976-10-05 Maschinenfabrik Schweiter Ag Apparatus to test for the presence of one only thread in textile machines
US4010908A (en) * 1974-07-29 1977-03-08 Owens-Corning Fiberglas Corporation Method and apparatus for handling linear elements
US4214717A (en) * 1975-06-10 1980-07-29 Nippon Seren Co. Ltd. False reeling preventing apparatus for traverse thread reeling machines
US4031560A (en) * 1975-11-19 1977-06-21 Maresh Richard L Chopped light relay keyer
US4866289A (en) * 1985-09-10 1989-09-12 Murata Kikai Kabushiki Kaisha Winding-form inspecting apparatus for wound-yarn packages
US5074480A (en) * 1987-09-01 1991-12-24 Zellweger Uster Ag Process and apparatus for determining the yarn speed on textile machines
US5074481A (en) * 1989-05-25 1991-12-24 W. Schlafhorst Ag & Co. Method and apparatus for monitoring the yarn winding production process
US5676328A (en) * 1996-03-13 1997-10-14 Threlkeld; James O. Method and apparatus for controlling tension in a traveling strand of rubber yarn during traverse winding

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DE2052117A1 (de) 1972-04-27
BE774361A (fr) 1972-02-14
FR2111526A5 (de) 1972-06-02
CH536251A (de) 1973-04-30

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