US3263499A - Method for testing the yarn quality of multi-frame spinning operations - Google Patents

Method for testing the yarn quality of multi-frame spinning operations Download PDF

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US3263499A
US3263499A US259117A US25911763A US3263499A US 3263499 A US3263499 A US 3263499A US 259117 A US259117 A US 259117A US 25911763 A US25911763 A US 25911763A US 3263499 A US3263499 A US 3263499A
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pulse
pulses
cop
yarn
spinning
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Gith Walter
Raasch Hans
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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
    • 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
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • 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
    • B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
    • B65H67/063—Marking or identifying devices for packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/60—Details of processes or procedures
    • B65H2557/65—Details of processes or procedures for diagnosing
    • 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 quality control of the spun material in such plants has been limited to random testing performed from time to 'time with a few spinning cops taken from one side of a multi-spindle machine or picked at random from the entire machine.
  • Such quality tests relate to maintenance of the desired yarn count (degree of fineness), twist (amount of twist per unit length) and other properties essential to the yarn being produced. In the event of faults, these are ascribed to the entire machine or machine side, and. are eliminated, for example by changing the necessary transmission gears, rings, spinning rotors or runners, and the like machine components.
  • each individual spinning cop with a discriminatory marking that identifies the one spinning frame on which the cop originated, and we then unwind yarn from the completed cop while simultaneously counting any occurringyarn faults. This is done by supplying the completed cops to a yarn re-winding machine such as used for winding cheeses or cones from the spinning cops.
  • a yarn re-winding machine such as used for winding cheeses or cones from the spinning cops.
  • the marking is preferably applied to the core of the cop on a surface area that remains bare of the body of yarn. It is most advantageous to impress or apply the markings at the foot end of the cop or core.
  • the winding machine on which yarn is unwound from the completed cops is preferably provided with a faultrespon'sive counting device operating mechanically, electrically, electronically or in any other suitable manner.
  • a faultrespon'sive counting device operating mechanically, electrically, electronically or in any other suitable manner.
  • the cause of the defect consisting for example in the selection of an incorrect ring or runner number, excessive wear of the ring or runner, incorrect loading of the stretching mechanism or the like, can then be eliminated before an appreciably large number of further defective cops is produced on that spinning frame.
  • the identifying marking on a surface portion of the core usually a tubular core or quill, that is not covered by the body of yarn when the cop is completed, the most suitable location being at the foot of the core.
  • tubular cores of sheet metal for spinning cops or tubes whose foot portion is reinforced by sheet metal consisting of an iron ring.
  • the identifying marking of the cops is obtained by impressing magnetic marking pulses upon the magnetizable area.
  • Used for marking purposes according to the invention are preferably code combinations that denote plural-digit numbers and/ or letters, each individual character, for example each individual numerical digit value or letter, being expressed by predetermined pulses of respectively different number, length, frequency of succession, or mutual spacing.
  • the pulses are in form of a circular function, for example sinusoidal-wave pulses
  • the frequency of pulse succession is identical with the pulse frequency itself.
  • the pulse sequence frequency corresponds to the spacing between successive ascending pulse flanks.
  • Such rectangular or particularly steep pulses are particularly advantageous for the purposes of our invention and are employed in the preferred embodiments described hereinafter.
  • FIG. 1 shows schematically a spinning cop with magnetic markings, in correlation to a mark producing or reproducing transducer.
  • FIG. 2 shows schematically the essential devices for unwinding yarn from a cop and simultaneously counting the occurring yarn defects.
  • FIG. 3 is a schematic illustration of a device for recording magnetic pulse markings on a cop according to FIG. 1 supplied to, or coming from, a particular spindle.
  • FIG. 4 shows schematically a device for reproducing the magnetic pulse markings in the event a cop was found, according to FIG. 2, to contain yarn with an excessive number of defects.
  • FIG. 5 shows part of a magnetizable ring provided with magnetic pulse markings and forming part of a cop as shown in FIG. 1.
  • FIG. 6 illustrates another device for recording magnetic pulses on such a ring.
  • FIG. 7 also shows part of the same magnetizable ring but exhibits a modified form of magneti markings.
  • FIG. 8 is a block diagram of another recording device similar in principle to that of FIG. 3 but comprising a system predominantly of electronic components.
  • FIG. 9 is the block diagram of another reproducing device similar in principle to that of FIG. 4 and also relating to electronic components.
  • FIG. 10 shows separately the cop rotating means and the transducer assembly used in the reproducing system according to FIG. 9.
  • transducer F For this purpose, we place a transducer F opposite the peripheral surface of the ring A and energize the transducer winding by electric pulses while maintaining a relative rotational movement between ring A and transducer F, it being irrelevant in principle whether the cop with ring A is held stationary while the transducer F is being rotated, or vice versa.
  • the recording of the magnetic pulse marks having the result of impressing upon the magnetizable surface area of the cop or ring a number of corresponding marks of'remanent magnetism, orresponds to the manner in which magnetic signals are generally recorded for such purposes as recording sound or data processing.
  • Each of the many spinning cops thus issuing from a multi-frame spinning machine or plant thus carries an identifying mark indicative of the one particular spinning frame from which the cop originated. It is preferable to promptly convey the completed spinning cops from the spinning machine to a Winding machine.
  • Applicable for this purpose are machine combinations in which a conveyor directly connects the spinning machine with a multistation winding machine such .as described in Patent 3,043,529 of S. Fiirst, assigned to the assignee of the present invention.
  • the same yarn-package winding machinery is employed to advantage for the purpose of quality control according to the invention. It is only necessary to provide the winding machine with a counting device that supervises the number of occurring yarn defects and preferably stops the winding operation or otherwise identifies a defective cop which is then to be traced back to its locality of origin by way of its magnetic markings.
  • Such a counting device is schmatically shown in FIG. 2 and described presently.
  • the cop denoted in FIG. 2 by its yarn body 12, is seated on a peg 13.
  • the yarn passes from the cop through a tensioner 14 and a slub catcher 15 over a rotary yarn guiding drum 16 onto a take-up spool 17 which is journalled on a frame 18 pivoted at 19 to the fixed frame structure of the machine.
  • the periphery of the yarn package being wound thus rests upon the guiding drum 16 and is frictionally entrained thereby as the guiding drum is driven at constant speed.
  • a yarn guard or feeler 21 is lightly biased by spring force against the travelling yarn.
  • the guard 21 turns clockwise about its pivot 22 and closes an electric contact 23 which controls a decadic counter 24 to advance one step.
  • the counter When the yarn breaks, the guard 21 turns clockwise about its pivot 22 and closes an electric contact 23 which controls a decadic counter 24 to advance one step.
  • the counter When the counter has reached a preadjusted maximum number, it opens a contact 25 which stops the drive 26 of the guiding drum 16 and thus discontinues the winding operation. Due to the action of the tensioner 14, the yarn will break if an excessively thin or weak spot occurs between tensioner 14 and guiding drum 16. Any slubs or excessively thick spots are caught by the slub catcher 15 which then also causes the yarn to break. Consequently, any such defects will cause the yarn guard 21 to close the contact 23 and to advance the counter 24 one step.
  • the particular counter-controlled stop means chosen for illustration in FIG. 2 are electrical because these particular details are not essential to the invention proper and can be more easily illustrated and explained with reference to an electric circuit diagram.
  • the drum 16 is driven from an electric motor 26 which is started by temporarily depressing an ON switch and can be stopped at any time by depressing an OFF switch.
  • the closing of the on switch causes a contactor 28 to pickup for energizing the motor 26 and to hold itself picked up through a self-holding contact 29.
  • the self-holding circuit becomes interrupted when the counter 24 reaches the selected maximum count andthen opens the contact 25.
  • the contact 25 may also be used for initiating a cop-doifing operation if desired.
  • the counter 24 must be reset to zero for re-closing the contact 25 to permit starting anew winding operation. Such resetting of the counter may take place together with dofiing or exchanging the cop. If no cop is excessively defective among those of an entire series, the contact 25 will remain closed.
  • each cop is provided with magnetic markings at or near the spinning location where the cop originated.
  • a device'for'thus impressing magnetic markings is shown in FIG. 3.
  • the cop of which only the core 11 and the iron ring A'according to FIG. 1 15 illustrated by a view from the top side, is temporarily accommodated on rollers 31 and 32 which engage the periphery of the ring A.
  • the roller 32 is driven from a motor 33, such as a synchronous motor, at a given constant speed.
  • a roller, 34 journalled on an arm 35 is lowered about a fixed pivot 36 until it engages the ring A.
  • a transducer W which in this manner is placed in proper recording relation to the peripheral surface of the ring A.
  • a pulse disc here schematically shown as a cam 37, which actuates a pulse contact 38.
  • the pulses are amplified by an amplifier 39 and supplied as unidireotional current pulses to the transducer W which impresses magnetically upon the ring A.
  • a demagnetizing magnet (not shown) can be mounted on the arm 35 ahead of the transducer W in order to erase any magnetic markers previously recorded, in the manner well known from magnetic tape recorders.
  • the drive 33-32 can be set for one full rotation of the ring A, but the transducer may be operated to repetitively place the coded marker onto the ring, for example, three or four times in peripheral succession, each complete marker covering less than one-quarter of the periphery.
  • the magnetic markings can be transposed back to visible readings by employing a device similar to FIG. 3 but equipped with a suitable signal converter.
  • the reproducing device as shown in FIG. 4 is suitable for the reading of digital code marks.
  • the cop is placed on rollers 41, 42 and driven by means of a motor 43, such as a synchronous motor.
  • An arm 45 with a roller 44 is lowered onto the surface of the ring A so that the reproducing transducer F is placed into proper relation to the ring surface.
  • the magnetic pulses acting upon the transducer F and translated into corresponding electric voltages are passed through an amplifier 47 and applied to a digital counter 48 which may be energized through a rectifier from the same alternating-current supply that energizes the motor 43 under control by a switch 50.
  • Pulse-responsive digital or decadic counters and indicators as shown at 48 are known and commercially available, as are the above-mentioned other electrical components, for example transducers F, W, contactors, motors, switches and amplifiers.
  • the read-out device of FIG. 4 operates essentially like a dial telephone.
  • the recorded start pulse lasting sufliciently long and being followed sufficiently rapidly by number pulses, initiates the decadic counter in the same manner, and if desired by similar means, as the lifting of a telephone receiver, and the groups of number pulses actuate the counter decades in the same manner as the telephone selector switches are actuated by the digit groups of dial pulses.
  • the tubular cores are to be marked by groups of digit pulses corresponding to identifying multi-digit numbers of the respective spinning locations.
  • FIG. 5 The illustration shows only a portion along the periphery of the iron ring A, or a corresponding magnetizable surface portion of the tubular core. Assume that the number 768 is to be marked. Corresponding magnetic pulses are recorded on the magnetizable surface area shown in FIG. 5. These pulses are denoted by B.
  • the digit value 8 is represented by eight individual pulse records B.
  • the digit value 6 is represented by six such pulses, and the value 7 by seven pulses.
  • Each digital group is separated from the next group by a relatively large spacing.
  • it is of advantage to precede the group of marking pulses by a start pulse C and to terminate the entire recording by a stop pulse D.
  • the start and stop pulses facilitate reproducing the markings as described above with reference to FIG. 4.
  • Five groups of pulses are sufficient to provide markings for most industrial purposes. For example, assume that a spinning plant comprises forty machines with 288 spindles per machine side. In this case the following pulse assignment is suitable: The machine sides are consecutively numbered from 1 through 80. Consequently two pulse groups are needed for identifying a particular machine side, one group having a maximum of ten pulses and the other group a maximum'of eight pulses. For identifying the 288 spindles on each machine side, there are needed three pulse groups of which two must possess a maximum of ten pulses and one group need only go up two pulses. These five pulse groups, as well as any additional start and stop pulse, can be conveniently accommodated on an area extending over only one-quarter to one-third of the ring periphery of a tubular core as conventionally used for spinning cops.
  • the transducer head W for recording the pulses, as well as the transducer head F for reproducing the pulses, on a drag lever as shown at 51 in FIG. 6.
  • the lever 51 is pivoted at 52 and carries a roller 53 so that when the roller is in rolling engagement with the iron ring A it maintains an approximately constant spacing between the transducer head and the iron ring.
  • the cop can be seated in a holder 54 on a conveyor chain 55.
  • the pulse recorder or the reproducer or both can be mounted for example at the conveyor chain on which the cops are transported from the spinning machine to the lay-off or winding location.
  • the conveyor chain or its drive may then also serve for controlling the equipment that issues the electric pulses through the transducer (corresponding to pulse transmitters 37, 38 in FIG. 3).
  • transducer heads being known, for example, from the German patent application S 3 8,962 VIIId/42g published in print September 13, 1956.
  • marking methods preferably those permitting an electric reproduction method, are applicable, such as those based upon the reflection of coded dipoles as described in Control Engineering of March 1962, pages 102 and 103.
  • the magnetic pulses can be erased from the core or magnetizable ring by a demagnetizing field before the cores are transported back to the spinning machine for production of further spinning cops, or the erasing can be done when the next magnetic markings are recorded as described above in conjunction with FIG. 3.
  • the cops are supplied to a read-out or reproducing device as described above with reference to FIG. 4 so that the location of origin becomes re-adably identified and, if desired, may be recorded on a recording instrument.
  • FIGS. 7 A comparison of FIGS. 7 and will show that the marking method according to FIG. 7 requires considerably less marker space because each individual digit figure is no longer represented by a number of pulses but only by the position of a single pulse.
  • the particular figure to be designated is determined by the peripheral spacing between the rear edges or flanks E of two successive pulses.
  • magnetic code pulses of the type exemplified by FIG. 7 can be recorded on the magnetizable surface area or ring periphery of the cop by a device as shown in FIG. 3 and described above.
  • the reproducing device must be provided with time discriminating means in order to distinguish between the characterdenoting spacing of successive pulse flanks.
  • Such a reproducing device is schematically shown in FIG. 8.
  • the device is equipped with means for accommodating and rotating the cop with its iron ring A along a transducer in the same manner as shown in FIG. 3, although in FIG.
  • the pulses sensed by the transducer head F are supplied through a pulse amplifier G and through a time-delay stage H to a pulse generator J.
  • the rear edge E of this pulse produces in the transducer a positive voltage pulse which, upon elapse of a delay interval adjusted in the delay stage H, causes the pulse generator I to start issuing pulses of even time spacing.
  • the pulse generator I then continues producing these pulses until the rear edge of the first figure, in this case the figure 8, again issues a voltage pulse. This voltage pulse performs two functions.
  • the pulse generator I In the first place, it is supplied through a shunt path K directly to the pulse generator I, bypassing the delay stage H, and stops the pulse generator. Up to this moment, the pulse generator I has issued eight pulses which passed through a pulse control stage L to an electronic decadic counter M. The first decade M thus reaches the count 8 and then stops.
  • the first positive voltage pulse produced by the rear edge of the recorded magnetic pulse is simultaneously applied to the delay stage H and this, as mentioned above, has the effect that the pulse generator I, upon elapse of the adjusted period of delay, is again started and then issues another sequence of pulses through the control stage L to the counter M until the next magnetic pulse rear edge, corresponding in this case to figure 6, stops the generator I through the line K, and thereafter again starts the pulse generator upon elapse of the delay period adjusted in the delay stage H.
  • the next following stop signal again stops the pulse generator J.
  • the counter M has received a total of six pulses from the pulse generator which have set the second decade M to the numbert6. These operations are repeated until the stop pulse D according to FIG. 7 terminates all operations.
  • stop pulse D were identical with the code pulses proper, it would not only have the effect of stopping the pulse generator I through the line K but it would again start the pulse generator upon elapse of the delay period adjusted in the delay stage H. This, however, is prevented as follows.
  • the front edges of the pulses likewise produce a peaked voltage pulse in the transducer which, however, has negative polarity in comparison with the positive signal pulses so far considered.
  • the distance between the positive voltage peak and the negative voltage peak corresponds to the pulse length of the magnetically recorded pulses.
  • the pulses C and D are twice as long. That is, the negative voltage peaks caused by the start and stop pulses precede the positive pulses by twice the interval of time occurring with the regular code pulses. This permits distinguishing the start and stop pulses in the delay set H by means of a suitable timing member from the other pulses of the combination.
  • the first occurrence of a wide pulse (C in FIG.
  • This switching function can be performed by a bistable multi-vibrator which forms part of the delay stage H and directly controls the pulse control stage L as is indicated by a connecting line T.
  • magnetic signals of the type exemplified by FIG. 2 can be recorded with the aid of equipment as shown in FIG. 3.
  • more elaborate electronic devices may also be used, as will be understood from the equipment described presently with reference to FIG. 9.
  • this operation makes it possible to simply count the travelling cops as they pass by a fixed locality and then impress upon each of them an identifying magnetic marker automatically selected in the counted order for distinguishing each cop as to its origin on the machine side as well as relative to the totality of spinning machines in the plant.
  • the system schematically shown in FIG. 9 operates in the manner just mentioned.
  • a photoelectric device P Located at a fixed locality along the conveyor 0 is a photoelectric device P.
  • a pulse is issued through an amplifier Q and and output line R to an electronic counter S.
  • the counted result is supplied through a pulse storer or memory unit T to a pulse transmitter U.
  • the pulse generator U is started by the pulse issuing from the photoelectric device P through the amplifier Q and a line V.
  • a transducer W Connected to the output circuit of the pulse generator U is a transducer W which impresses upon the iron ring A of the cop the magnetic code pulses corresponding to the result of the counting operation.
  • the transducer W may be mounted on a drag lever as shown at 35 in FIG. 3, but is shown in FIG. 9 only schematically and separately from the conveyor 0, although it will be understood that in reality the transducer head W is located at the conveyor, namely at the location W.
  • the recording operation in a device as shown in FIG. 9 proceeds as follows.
  • the pulse transmitter is started and first impresses upon the magnetizable ring A the start pulse C (FIG. 7).
  • the electronic counter S is simultaneously supplied with a pulse I through line R and advances one step or figure. This figure is stored in the memory unit T.
  • the pulse furnished from the photoelectric device P passes simultaneously through line V to the pulse transmitter U which 9 scans the number counted by the electronic counter S and stored in the memory unit T.
  • the memory unit then furnishes the marking pulses B according to FIG. 7 corresponding to the particular spindle on which the cop originated.
  • the value 1 is arranged at such a distance from the rear edge E of the stop pulse C, that this spacing corresponds to the width of the pulse B.
  • This spacing is provided for by a delay interval B (FIG. 7).
  • the unit of time whose percentile amount serves to characterize the particular figure, corresponds to the time required for the transducer head to pass along the positions 1, v2, 3 9, on the iron ring. Consequently, when the pulse rear edge E of the first pulse is to designate the value 8, then this pulse is impressed at 80% of the unit time. These 80% of unit time are denoted in FIG.
  • Electronic components for use according to FIGS. 8 and 9, including suitable systems for operating an electronic counter by time discriminating signals in the described manner, as well as counters with pulse memory stages, are known as such from data-processing and digitalcontrol techniques.
  • electronic decadic counters and appertaining circuitry suitable for the purposes of the invention are available from Grundig-Radio- Maschinene (German corporation) and described in the German periodical Elektronik, 1962, No. 5, pages 135 to 138. Reference may also be had to the same periodical 1959, No. 9, pages 265 to 267 relating to analog-digital converters; 1961, No. 11, pages 325 to 328 and 1962, No. 2, pages 50 to 54 and N0. 3, pages 79 to 83, relating to memory circuits; 1961, No.
  • the speed at which the magnetic pulses are recorded on the cop depends upon the travel speed of the conveyor 0.
  • the start and stop pulses C and D may also be used in known manner for automatically regulating the reproducing device, such as the one described above with reference to FIG. 8, so that the reproduction is also adapted to the conveyor speed.
  • the reproducing device such as the one described above with reference to FIG. 8, so that the reproduction is also adapted to the conveyor speed.
  • reproducing device may be provided with a controllablespeed motor for rotating the cop as exemplified in FIG. 10.
  • the cop is rotatably mounted on a holder which is driven from a direct-current series motor 61, the transducer means and the devices controlled thereby being as described above with reference to FIG. 8.
  • the motor 61 After the motor 61 is switched on, it increases its rotating speed until the peripheral speed of the ring A corresponds to the time required by the entire width of the start or stop pulse to pass by the field gap (sensing gap) of the transducer head F.
  • a pulse discriminator Z is supplied with pulses corresponding to the unit time and also with the scanned-01f start-stop pulses. The discriminator Z performs a time comparison, such as with the aid of coincidence gate circuits.
  • This positive or negative voltage is applied to the motor 61, for example and as shown, by means of an auxiliary control field winding 62 for regulating the motor to the proper speed.
  • the counting operation of counter M can then be started when synchronism is established. It will be understood, however, that when provision is made to employ alternatingcurrent motors of the synchronous type throughout, so as to secure reliably a constant-speed operation at the conveyor and in the recording and reproducing devices, no additional speed regulating means are necessary and the reproducing performance becomes virtually as reliable as in conventional sound recording and data processing equipment.
  • the pulse configuration and duration of the magnetic recordings used for the purposes of the invention can be modified in various respects.
  • the cop instead of employing pulses of constant length as shown in FIG. 7, the cop may be impressed with pulses of variable length whose respective length values differ from the unit time B
  • the reproducing device according to FIG. 8 would have to scan the entire distance between the pulse rear edge for figure 8 and the pulse rear edge for figure 7 before the pulse generator is stopped. In this interval of time, however, the pulse generator issues considerably more than ten pulses so that a counting o eration is no longer possible.
  • the electronic counter M of the device according to FIG. 8 would then indicate that the origin of the particular cop is no longer definable. Although this is a disadvantage, it is greatly preferable to a false indication of origin.
  • the method of testing the quality of yarn spun on multi-frame spinning plants which comprises providing each resulting spinning cop with a core having magnetizable surface area and impressing upon said area a magnetic recording of discriminatory markings identifying the corresponding one of the respective spinning frames, immediately thereafter unwinding yarn from the completed cop and simultaneously counting any yarn faults, and magnetically reproducing and reading the markings for thereby tracing excessively faulty cops back to said corresponding one spinning frame.
  • the method of testing the quality of yarn spu on multi-frame spinning plants which comprises providing each resulting spinning cop with a core having a magnetizable surface area and impressing upon said area a code combination of magnetic pulse recordings, each combination comprising a plurality of pulse groups recorded in sequence and identifying the corresponding one of the respective spining frames, immediately thereafter unwinding yarn from the completed cop and simultaneously counting any yarn faults, and magnetically reproducing and reading the code combination for tracing excessively faulty cops back to said one corresponding spinning frame.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US259117A 1962-02-17 1963-02-18 Method for testing the yarn quality of multi-frame spinning operations Expired - Lifetime US3263499A (en)

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US4660370A (en) * 1985-01-31 1987-04-28 Murata Kikai Kabushiki Kaisha Spinning frame control system
US4677819A (en) * 1985-03-22 1987-07-07 Hans Stahlecker Method and apparatus for operating an open-end friction spinning machine
US4838019A (en) * 1985-08-19 1989-06-13 Murata Kikai Kabushiki Kaisha Spinning frame control system
US4843808A (en) * 1987-04-14 1989-07-04 W. Schlafhorst & Co. Method and device for monitoring the quality of yarns and wound packages produced by and the quality of operation of a textile machine
US5100073A (en) * 1990-01-29 1992-03-31 W. Schlafhorst Ag & Co. Automatic textile winding apparatus
US5107667A (en) * 1988-01-24 1992-04-28 Murata Kikai Kabushiki Kaisha Spinning frame management method
US5178008A (en) * 1990-01-26 1993-01-12 Zellweger Uster Ag Method and apparatus for the qualitative assessment and classification of yarns during a yarn clearing process
US6352214B1 (en) * 1999-05-25 2002-03-05 Gebruder Loepfe Ag Method for identifying the spinning position of a cop
EP1728750A3 (en) * 2005-06-03 2007-08-15 Murata Kikai Kabushiki Kaisha Automatic winder comprising device sticking label to take up tube
WO2008113692A1 (de) * 2007-03-19 2008-09-25 Amsler Tex Verfahren zur herstellung eines bebilderten gewebes

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US4681231A (en) * 1982-12-08 1987-07-21 Murata Kikai Kabushiki Kaisha Article selecting and conveying system
US4940127A (en) * 1986-12-12 1990-07-10 Murata Kikai Kabushiki Kaisha Wound yarn package transporting system
DE3745001C2 (en) * 1987-05-16 1992-08-06 W. Schlafhorst Ag & Co, 4050 Moenchengladbach, De Preparing for subsequent treatment process for textile package
DE3733511A1 (de) * 1987-10-03 1989-04-13 Schlafhorst & Co W Verfahren und vorrichtung zur kennzeichnung von huelsen
DE3807106A1 (de) * 1988-03-04 1989-09-14 Schlafhorst & Co W Kodierung von spulenhuelsen
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DE3832482A1 (de) * 1988-09-24 1990-04-26 Zinser Textilmaschinen Gmbh Verfahren und einrichtung zum markieren fehlerhafter spinnstellen an textilmaschinen
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BE628530A (sv)
GB1035682A (en) 1966-07-13

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