US3747862A - Method and device for monitoring the readying of spinning cops for unwinding the same - Google Patents

Method and device for monitoring the readying of spinning cops for unwinding the same Download PDF

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Publication number
US3747862A
US3747862A US00143486A US3747862DA US3747862A US 3747862 A US3747862 A US 3747862A US 00143486 A US00143486 A US 00143486A US 3747862D A US3747862D A US 3747862DA US 3747862 A US3747862 A US 3747862A
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US
United States
Prior art keywords
thread
core
cop
measuring
spinning
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Expired - Lifetime
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US00143486A
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English (en)
Inventor
H Raasch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
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Publication of US3747862A publication Critical patent/US3747862A/en
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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
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/086—Preparing supply packages
    • B65H67/088—Prepositioning the yarn end into the interior of the supply package
    • 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

  • ABSTRACT Method of monitoring the readying of hollow core spinning cops for unwinding the same includes seizing an end of a thread located outside a respective spinning cop on which the thread is wound, and feeding the thread end to a measuring device for monitoring a geometric magnitude of the thread before inserting the thread end into the hollow interior of the spinning cop core; and device for carrying out the method.
  • the invention relates to method and device for monitoring the readying of hollow core spinning cops preparatory to subjecting them to an unwinding operation and more particularly to such method wherein a thread starting end located outside the spinning cop is seized and inserted into the hollow core thereof, and device for carrying out such method.
  • the effectiveness of the readying operation can be monitored by checking or controlling the tip or foot bunch,,respectively.
  • the thread starting end is located within the hollow interior of. the cop core, however, control of the effectiveness of the readying operation is not possible.
  • method of monitoring the readying of hollow-core spinning cops for unwinding the same which comprises seizing an end of a thread located outside a respective spinning cop on which the thread is wound, and feeding the thread end to a measuring device for monitoring a geometric magnitude of the thread such as the cross section or unit volume thereof, before inserting the thread end into the hollow interior of the spinning cop core.
  • the invention of the instant application is not concerned with monitoring the thread to determine whether or not it has been properly made ready, but rather to determine if a proper readying of the starting end of the thread is possible.
  • the method of the invention of this application and by means of the measuring device of the invention it can be established, on the one hand, whether or not the thread end is located in ready position for insertion into the hollow interior of the spinning cop core, and it can be determined moreover, on the other hand, if either one or more thread sections or lengths are in make-ready position. Since experience has shown that the thread directed or guided in front of the bore of the spinning cop core is also inserted with adequate reliability into the hollow core of the cop, adequate reliability for all practical purposes is therefore attained in this manner for monitoring the ready-making of the spinning cop.
  • measuring means for monitoring a geometric magnitude of the thread whose end is to be inserted into the hollow interior of the cop core on which the thread is wound, means for disposing the measuring means and the cop core relative to each other, so that the end of the cop core into which the thread end is to be inserted is located in front of the measuring means, and a sorting device for the readied cops operatively connected to the measuring means so as to be controlled thereby.
  • the measuring means preferably of the photoelectric or capacitive types, has an output which is connected to an input of an amplifier so that the output signal of the measuring means forms the input signal to the amplifier.
  • the output signal of the amplifier serves for controlling the sorting device depending upon whether it falls below or exceeds a predetermined range of nominal values.
  • the amplifier has a digital and an analog output, means for delivering an output signal to the digital output corresponding to the presence or absence of a thread for insertion into the respective hollow cop core, and means for delivering an output signal to the analog outputcorresponding to the numberof thread lengths present for insertion into the hollow cop core.
  • the aforementioned device can, on the one hand, monitor whether or not a thread has been fed into the hollow cop core and, on the other hand, also control the feeding of several thread sections or lengths into the core.
  • the e herein as method and device for monitoring the readying of spinning cops for unwinding the same it is nevertheless not intended to be limited to the details shown, since various modifications may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
  • FIG. 1 is a diagrammatic elevational view of a conventional thread winding machine installation having a spinning cop readying device according to the invention
  • FIG. 2 is a much enlarged side elevational view of the spinning cop readying device shown in FIG. 1;
  • FIG. 3 is a circuit diagram for operating the spinning cop readying device.
  • FIG. 1 a support frame 1 carrying an inclined table 2 on which there is seated a receptacle 3, 4, for discharging in a conventional manner, spinning cops that are to be made ready for unwinding in accordance with the invention of this application.
  • a shaft or slide 5 by means of which spinning cops discharging from the base of the receptacle 4 are fed to the cop readying device of the invention, generally shown at 6.
  • the spinning cop readying device 6 has a nozzle 160 formed with an elongated slot extending along the cop K from the foot to the tip thereof.
  • a pivotable tube member 218 is located at the side of the slotted nozzle 160 at which the foot of the cop K is disposed.
  • the tube member 218 and the elongated slotted nozzle 160 are connected to a suction channel 201 which is in turn connected to a non-illustrated suction source.
  • the thread starting end from the cop foot or the periphery of the cop is withdrawn or unwound from the cop as the rollers 61 and 62 (FIG. 1) rotate simultaneously, and assumes the position shown in FIG.
  • the device is substantially like the aforementioned device of the Swiss Pat. No. 411,653.
  • a measuring member 501 for monitoring a geometric magnitude, such as the cross section or the volume, for example, of the thread to be inserted, is located at the end 209' of the core bore taking up the thread end, so that the gripper hook 204 pulls the thread as shown into the measuring span or stretch.
  • the measuring member 501 is connected to an electromagnet 503 (FIG. 1) which, when electrically excited, acts against the force of a compression spring 504 upon a bellcrank or double-arm lever 502 pivotally mounted at 5020 on the support structure for the conveyor chain and below the conveyor chain 7 proper.
  • the upper arm of the lever 502 as shown in FIG.
  • the system shown diagrammatically in FIG. 3 provides, in accordance with the invention, a preferred means for controlling the magnet 503 by the measuring member 501.
  • the system of FIG. 3 has a measuring span or length encompassed by a lamp or light source 505, located at the left-hand side of the figure, a pair of optical lenses 506 and 507, as well as a light-sensitive element 508. Whenever a thread is disposed within the region between the lenses 506 and 507, the shadow thereof produces a change in the current generated in the photosensitive element 508 which is fed as input signal to an amplifier 509.
  • the amplifier 509 has two outputs 510 and 511 which respectively deliver an analog signal and a digital signal.
  • the output 510 of the amplifier 509 which feeds the analog signal is connected to a threshold value switch 512 having a threshold value which is adjustable by means of a variable resistance 513 connected in parallel therewith. If the analog signal exceeds the set threshold value, it is thus transformed into a digital signal at the output 514 of the threshold value switch 512. If the analog signal at the amplifier output 510 is lower than the set threshold value, a signal having zero value (O-signal) is produced at the output 514 of the threshold value switch 512.
  • the digital signal at the output 511 of the amplifier 509 has a value of 0 when no thread is present between the lenses 506 and 507, and has a value of I when a thread is located therebetween.
  • the value of the signal at the amplifier output 511 is reversed so that a zero or 0-signal is produced at the output 516 of the NOT- gate 515 when the thread is disposed in the measuring span or stretch i.e. between the lenses 506 and 507.
  • Both the output 514 of the threshold value switch 512 as well as the output 516 of the NOT-gate 515 are connected to two inputs, respectively, of a NOR-gate 517.
  • the NOR-gate 517 has an output 518 at which, therefore, only a signal having a value of one (l-signal) is produced when, on the one hand, a thread is inserted in the measuring span or between the lenses 506 and 507, and on the other hand, the shadow of this thread does not exceed the threshold value of the threshold value switch 512 which was set by the variable resistance 513.
  • the output 518 of the NOR-gate 517 is connected to a storage 519.
  • a signal set in thestorage 519 is canceled, so that a 0-signal appears at the output 520 when the storage 519 is queried by an interrogation switch 521. Consequently, the coil of the electromagnet 503 remains currentless, and the spinning cop remains in the conveyor chain 7.
  • the interrogation switch 521 is actuated by the conveyor chain 7 when the closure flap or blocking lever 39 for the spinning cop being monitored is located above the lever 502.
  • a setting switch 523 also actuable by the conveyor chain 7 is closed and produces momentarily a signal at the setting input 522 to the storage 519.
  • a l-signal is thereby produced at the output 520 of the storage 519. If, in the case of the next-spinning cop that is monitored, no thread is inserted in the measuring span or if several thread sections or lengths are simultaneously disposed therein so that the threshold value of the threshold value switch 512 is exceeded, a l-signal appears either at the output 516 or at the output 514. However, the necessity of canceling the signal set in the storage 519 is not met thereby.
  • the storage 519 remains set so that, upon actuation of the interrogation switch 521, the 1- signal produced at the output 520 energizes the electromagnet' 503 whereby the spinning cop is released from the conveyor chain 7 and is ejected into the receptacle 499.
  • the aforedescribed and illustrated embodiment of the monitoring device of the invention can have various different forms.
  • the threshold value of the threshold value switch 512 must be readjusted for virtually every change in thread thickness, In many cases, it is however not absolutely necessary to remove from the conveyor chain 7 all of those spinning cops, in the core bores 209 of which more than one thread section or length are inserted.
  • Method of monitoring the readying of hollow-core spinning cops for unwinding the same which comprises seizing an end of a thread located outside a respective spinning cop on which the thread is wound, feeding the thread end to a measuring device, monitoring a geometric magnitude of the thread in the measuring device and subsequently inserting the thread end into the hollow interior of the spinning cop core.
  • Method according to claim 1 which includes measuring the cross section of the thread and comparing it with a given nominal value before inserting the thread end into the hollow core.
  • Method according to claim 1 which includes measuring the unit volume of the thread and comparing it with a given nominal value before inserting the thread into the hollow core.
  • Device for monitoring the readying of hollow core spinning cops for unwinding the same comprising measuring means for monitoring a geometric magnitude of a thread whose end is to be inserted into the hollow interior of a spinning cop core on which the thread is wound, means for disposing said measuring means and the spinning cop core relative to each other so that the end of the cop core, into which the thread end is to be inserted, is located in front of said measuring means, means for inserting the thread into the cop core, a sorting device for the readied cops, and means responsive to said measuring means and operatively connected to said sorting device for ejecting therefrom a spinning cop having a thread with an abnormal geometric magnitude.
  • measuring means has an output connected to an input of an amplifier so that an output signal of said measuring means forms the input signal to said amplifier, said amplifier having an output operatively connected to said sorting device for controlling the latter in dependence upon the value of an amplifier output signal being less than and greater than a predetermined range of nominal values.
  • said amplifier has a digital output and an analog output, means for delivering an output signal to said digital output corresponding relatively to the presence and absence of a thread for insertion into the respective hollow cop core, and means for delivering an output signal to the analog output corresponding to the number of thread lengths present for insertion into the hollow cop core.
  • Device including means connected to said analog output for transforming the analog output signal of said amplifier into a digital signal when the analog output signal exceeds a predetermined limiting value.
  • Device including a storage for said signals, and an interrogation switch controllable by said sorting device, said sorting device having a member for actuating the same, said storage being connectible through said interrogation switch to said actuating member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US00143486A 1970-05-16 1971-05-14 Method and device for monitoring the readying of spinning cops for unwinding the same Expired - Lifetime US3747862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2024110A DE2024110C3 (de) 1970-05-16 1970-05-16 Verfahren und Vorrichtung zur Überwachung der Vorbereitung von Spinnkopsen für den Abspulvorgang

Publications (1)

Publication Number Publication Date
US3747862A true US3747862A (en) 1973-07-24

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Family Applications (1)

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US00143486A Expired - Lifetime US3747862A (en) 1970-05-16 1971-05-14 Method and device for monitoring the readying of spinning cops for unwinding the same

Country Status (8)

Country Link
US (1) US3747862A (de)
JP (1) JPS5427462B1 (de)
BE (1) BE767224A (de)
CH (1) CH523195A (de)
DE (1) DE2024110C3 (de)
ES (1) ES391129A1 (de)
FR (1) FR2091581A5 (de)
GB (1) GB1292090A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681271A (en) * 1985-01-23 1987-07-21 Murata Kikai Kabushiki Kaisha Yarn end finding apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5969372A (ja) * 1982-10-13 1984-04-19 Murata Mach Ltd 糸端の口出し装置
JPS5961163U (ja) * 1982-10-13 1984-04-21 村田機械株式会社 管糸供給装置
DE3531263A1 (de) * 1985-08-31 1987-03-12 Maier Eugen Metallverarbeitung Vorrichtung zur uebergabe des fadenanfangs einer spule bzw. eines cops von der spulenhuelse an eine spulmaschine
JPS63196471A (ja) * 1987-02-09 1988-08-15 Murata Mach Ltd 口出し糸端の検出方法
DE4009702C2 (de) * 1990-03-27 2000-04-13 Schlafhorst & Co W Verfahren und Einrichtung zum Lösen und Bereitlegen des Fadenendes einer Textilspule

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279712A (en) * 1963-12-21 1966-10-18 Reiners Walter Method and apparatus for supplying yarn coils to a multi-station yarnpackage winding machine
US3295775A (en) * 1963-04-05 1967-01-03 Reiners Walter Method and apparatus for readying the winding operation of yarn supply coils on coil winding machines
US3380677A (en) * 1963-08-30 1968-04-30 Schweiter Ag Maschf Method and apparatus for increasing the efficiency of automatic winding machines
US3458912A (en) * 1966-08-17 1969-08-05 Schweiter Ag Maschf Yarn monitoring system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295775A (en) * 1963-04-05 1967-01-03 Reiners Walter Method and apparatus for readying the winding operation of yarn supply coils on coil winding machines
US3380677A (en) * 1963-08-30 1968-04-30 Schweiter Ag Maschf Method and apparatus for increasing the efficiency of automatic winding machines
US3279712A (en) * 1963-12-21 1966-10-18 Reiners Walter Method and apparatus for supplying yarn coils to a multi-station yarnpackage winding machine
US3458912A (en) * 1966-08-17 1969-08-05 Schweiter Ag Maschf Yarn monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681271A (en) * 1985-01-23 1987-07-21 Murata Kikai Kabushiki Kaisha Yarn end finding apparatus

Also Published As

Publication number Publication date
BE767224A (fr) 1971-10-01
GB1292090A (en) 1972-10-11
DE2024110B2 (de) 1978-03-30
DE2024110A1 (de) 1971-12-02
JPS5427462B1 (de) 1979-09-10
CH523195A (de) 1972-05-31
FR2091581A5 (de) 1972-01-14
DE2024110C3 (de) 1978-11-30
ES391129A1 (es) 1973-08-16

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