US3756524A - Electronic monitoring apparatus and monitoring method for textile materials - Google Patents

Electronic monitoring apparatus and monitoring method for textile materials Download PDF

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Publication number
US3756524A
US3756524A US00097661A US3756524DA US3756524A US 3756524 A US3756524 A US 3756524A US 00097661 A US00097661 A US 00097661A US 3756524D A US3756524D A US 3756524DA US 3756524 A US3756524 A US 3756524A
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United States
Prior art keywords
sensing device
temperature sensing
temperature
textile material
output signal
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Expired - Lifetime
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US00097661A
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English (en)
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E Felix
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Zellweger Uster AG
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Zellweger Uster AG
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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
    • B65H63/02—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

  • ABSTRACT An electronic monitoring system employing electrical circuitry for controlling the movement of textile materials, which circuitry embodies a temperature sensing device past which moves the textile material.
  • the movement of the textile material past the temperature sensing device brings about changes in temperature of the temperature sensing device owing to the thus generated movement of the atmosphere surrounding the temperature sensing device and/or owing to contact of the textile material with the temperature sensing device.
  • the changes in temperature of the temperature sensing device cause a change of the output signal of the circuitry which can be used to evaluate the presence or movement of the textile material.
  • the method of the invention for monitoring the movement of textile material comprises moving a yarn past a temperature sensing device, bringing about changes in temperature of the temperature sensing device owing to such move ment of the yarn, which changes in temperature cause a variation in the output signal of the electrical circuitry associated with the temperature sensing device which can then be used for evaluating the presence or movement of the textile material.
  • the present invention broadly relates to textile monitoring equipment, and more specifically, is directed to a new and improved electronic monitoring device equipped with a circuit arrangement for controlling the movement of textile materials, especially yarns or threads formed of natural fibers or synthetic fibers, and additionally, the present invention also relates to a new and improved monitoring technique or method for textile materials.
  • textile materials with which the monitoring device and techniques of the present invention are employed is intended to encompass, by way of illustration and not limitation, yarns, ply yarns or threads, roving, slivers, and other similar types of filamentary materials, formed of natural fibers or synthetic materials.
  • the textile monitoring art is acquainted with electronic monitoring devices where the textile thread oryarn is supervised with the aid of a capacitive measuring element. Owing to the specific alternating current signal which is generated in a capacitor due to fluctuations in the cross-section of a moving textile yarn, it is possible to determine whether the yarn is moving or, in fact, is even present.
  • a further type of monitoring equipment for textile materials has become known to the art which makes use of a mechanical yarn feeler; a rod member which can be placed into mechanical oscillation serves as the feeler element.
  • the dampening of the mechanical oscillations which are brought about by the yarn is characteristic of the presence of the yarn.
  • a primary object of the present invention relates to the provision of an improved method of, and apparatus for, monitoring textile materials which is not associated with the aforementioned drawbacks of the prior art structures and techniques and which effectively and reliably fulfills the existing need.
  • Still another more specific object of the present invention relates to an improved electronic monitoring device for textile materials which is relatively simple in construction, inexpensive to manufacture, provides extreme reliability in performing its monitoring function, needs a minimum of maintenance and servicing, and is not readily subject to breakdown.
  • Yet a further significant object of the present invention relates to an improved monitoring technique for controlling textile materials wherein the movement of the textile material triggers changes in the temperature of a temperature sensing device which, in turn, brings about a change in an output signal indicative of the presence or movement of the textile material.
  • the electronic monitoring device of the present invention is generally manifested by the features that the circuit arrangement for the monitoring device embodies a temperature sensing device or feeler which possesses a different temperature than the ambient or surrounding temperature when the textile material is not present or not moving.
  • the textile material is moved past the temperature sensing device and the movement of the textile material at the temperature sensing device brings about changes in temperature of the temperature sensing device of the circuit arrangement owing to the movement of the atmosphere surrounding the temperature sensing device and/or the contact of the textile material with the temperature feeler.
  • the aforementioned change in temperature of the temperature feeler at the circuit arrangement brings about a change of its output signal. It is particularly advantageous to use such electronic monitoring equipment as a yarn control device and/or a switching device for a textile machine, such as for instance a spinning machine or winding machine.
  • thermoelements there can be advantageously employed a compo nent, an electrical parameter of which such as the electrical resistance of which varies with temperature.
  • thermoelements there are also available temperature sensing devices which generate a voltage which is dependent upon temperature, such as for instance thermoelements.
  • NTC-resistor generally referred to in the art as a thermistor
  • a resistor having a positive temperature coefficient conveniently referred to hereinafter as a PTC- resistor, and typically referred to in the art as a sensitor.
  • a new and improved technique or method for monitoring a textile material which, broadly speaking, contemplates mov- 3 ing the textile material past a temperature sensing device arranged in the circuit of the monitoring equipment, and causing a change in temperature of the temperature sensing device by means of the passing textile material.
  • This change in temperature brings about a change in the output signal of the circuit arrangement of the monitoring equipment which is indicative of the presence or movement of such textile material.
  • FIG. 1 schematically illustrates a first embodiment of monitoring equipment employing a voltage dividercircuit arrangement utilizing a temperature feeler:
  • FIG. 2 schematically illustrates the construction of the monitoring device of the invention with a circuit arrangement of the type shown in FIG. 1;
  • FIG. 3 is a circuit diagram of a modified form of monitoring equipment employing a bridge circuit with resistors and temperature feelers or sensing devices;
  • FIG. 4 schematically illustrates the embodiment of textile monitoring device and circuitry according to the arrangement of FIG. 3;
  • FIG. 5 schematically depicts the arrangement of monitoring equipment of the type shown in FIG. 4 at a winding machine by way of example.
  • FIG. 1 there is schematically illustrated the circuit arrangement of a textile monitoring device designed according to the teachings of the present invention and wherein such circuit arrangement comprises a. voltage divider circuit 1 embodying the resistors 11 and 12.
  • the NTC-resistor 12 constitutes the temperature feeler or temperature sensing device.
  • the resistance value it is possible to achieve the result that the NTC- resistor 12 possesses an operating temperature which is considerably above the surrounding or ambient temperature.
  • the atmosphere surrounding the temperature feeler or sensing device 12 is agitated or placed into motion, bringing about cooling of the NTC-resistor 12.
  • Cooling of the NTC-resistor 12 causes a change in its resistance which, in turn, brings about a change in the voltage U, appearing across resistor 12.
  • the output signal U assumes a predetermined value.
  • the temperature of the NTC- resistor 12 again increases because the cooling effect previously existent by virtue of the atmosphere which was in motion is no longer present.
  • the output signal U changes. It will be readily apparent that the variations of this output signal U, are indicative of the presence or movement of the yarn.
  • FIG. 2 schematically illustrates one form of electronic monitoring equipment embodying a housing 15 within which there is arranged the circuitry shown in FIG. 1 for instance.
  • the temperature feeler or temperature sensing device 12 which, as previously recalled, was assumed by way of example to comprise a NTC- resistor, is arranged in such a way that the textile strand 13 which moves through the guide element 14 travels in close proximity to the temperature feeler 12.
  • FIG. 3 illustrates a modified form of monitoring circuitry embodying a bridge circuit 2 containing in each branch 12/21 and 24/22 of the bridge a respective temperature sensing device or feeler 12 and 24 respectively.
  • This type of circuit arrangement renders the bridge extensively independent of fluctuations of the surrounding temperature.
  • the current flowing in both branches of the bridge 2 is again selected in such a way that the temperature of the temperature sensing devices 12 and 24 is appreciably different from the surrounding temperature.
  • the textile strand 13 is stationary there is present a predetermined bridge voltage U It is not necessary in any way that the bridge voltage U be balanced to null.
  • the NTC-resistor 12 cools down in the same manner as already described in connection with the circuitry of FIG. 1.
  • the bridge voltage U the output signal, changes.
  • FIG. 4 which is somewhat analogous to the showing of FIG. 2, likewise depicts the electronic monitoring device utilizing circuitry of the type depicted in FIG. 3 embodying the temperature sensing devices 12, 24 arranged within the monitor housing 27.
  • the textile strand 13 is guided by the guide arrangement 14 in close proximity past the NTC-resistor 12.
  • the NTC- resistor 24 is subjected to the same surrounding conditions as the resistor 12.
  • FIG. 5 there is schematically illustrated therein a winding machine or winder, generally designated by reference character 3, by means of which a textile strand or yarn 13 is wound from a cop 31 via the yarn brake 32 and the yarn drive-and guide roll 33 upon the cross-wound bobbin 34.
  • the guide roller or drum 33 is driven by a suitable drive motor M which constitutes an element operated by or responsive to the output signal considered above.
  • a monitoring device 42 for instance of the type heretofore discussed, and specifically, by way of example, illustrated in FIGS. 3 and 4, is arranged between the yarn brake 32 and the drive roll or drum 34.
  • the output signal of this monitoring device 42 which can be amplified, is delivered to a relay 36, the switching contact 37 of which upon the presence of such output signal, which corresponds to a moving yarn 13, is closed.
  • the relay 36 changes its switching state, the contact 37 opens, and the drive motor M is disconnected from the voltage source U.
  • the temperature feelers or sensing devices were NTC- resistors
  • the resistors 12 and 24 considered in conjunction with the circuitry of FIGS. 1 and 3 also could be FTC-resistors or other components, the resistance value of which changes as a function of temperature. They also can be constituted by components such as thermoelements which generate a voltage as a function of temperature.
  • the temperature of the temperature feeler 12 can also be maintained lower than the surrounding temperature. What is only of importance is that the temperature of the feeler or sensing element differs from the surrounding temperature.
  • the monitoring equipment is used as a supervisingand/or switching element in a textile machine, then it is necessary that, for instance, upon start-up of the machine the effect of the output signal of the monitoring device be suppressed until the starting operation has been completed.
  • the movement of the strand need not necessarily be in its lengthwise direction.
  • the transverse movement of the yarn at the balloon can be used to generate the cooling air current.
  • the temperature sensing device or feeler possesses a temperature approximating that of the room or surrounding conditions. In such case heating up of the temperature feeler is undertaken by the hot strand or yarn.
  • Electronic monitoring devices designed according to the concepts of the present invention are suitable for use in conjunction with many different types of textile machines, such as for instance doubling and twisting machines, looms, flyers, drawing frames, carding machines, warping machines, circular knitting machines, flat knitting machines, and raschel knitting machines, and so forth.
  • textile machines such as for instance doubling and twisting machines, looms, flyers, drawing frames, carding machines, warping machines, circular knitting machines, flat knitting machines, and raschel knitting machines, and so forth.
  • An electronic monitoring device for controlling the presence or movement of textile materials, especially yarns, ply yarns or threads, roving, slivers, formed of natural fibers or synthetic materials, comprising a circuit arrangement for generating an output signal and incorporating a temperature sensing device past which moves in close proximity thereto the textile material, movement of the textile material past the temperature sensing device placing the air surrounding the temperature sensing device into motion and thus bringing about a change in the temperature of such temperature sensing device, said circuit arrangement including means in circuit with said temperature sensing device, said temperature sensing device and said means in circuit therewith producing a change in the output signal of said circuit arrangement in response to the change in temperature of said temperature sensing device, said output signal being employed to act upon an element responsive to the output signal.
  • thermosensor device as defined in claim 1, wherein said temperature sensing device comprises an electrical resistor element whose resistance value changes as a function of its temperature.
  • said means of said circuit arrangement comprises a voltage divider, said temperature sensing device being an element of said voltage divider and comprising a variable resistor, the resistance value of which is dependent upon temperature, and wherein the voltage across said temperature sensing device constitutes said output signal.
  • said bridge circuit includes a further branch which does not contain said temperature sensing device, said further branch being equipped with an electrical component possessing the same temperaturedependency of its resistance value as said temperature sensing device.
  • a method for monitoring the presence or movement of textile materials comprising the steps of: moving textile material in close proximity to and past a temperature sensing device arranged in an electrical circuit, agitating the air surrounding the temperature sensing device by means of the moving textile material in order to place the air surrounding the temperature sensing device into a state of motion to thus bring about a change in the temperature of the temperature sensing device due to the presence or movement of the textile material, the change in the temperature of the temperature sensing device altering an electrical parameter thereof, and utilizing such change in temperature of the temperature sensing device to bring about a variation in the output signal of the electrical circuit, which output signal is then indicative of the presence or movement of the textile material.
  • the step of moving the textile material past the temperature sensing device includes the step of moving the textile material in a transverse direction with regard to its lengthwise axis.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
US00097661A 1970-03-24 1970-12-14 Electronic monitoring apparatus and monitoring method for textile materials Expired - Lifetime US3756524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH439370A CH521916A (de) 1970-03-24 1970-03-24 Elektrischer Wächter und Verwendung desselben

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US3756524A true US3756524A (en) 1973-09-04

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US00097661A Expired - Lifetime US3756524A (en) 1970-03-24 1970-12-14 Electronic monitoring apparatus and monitoring method for textile materials

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US (1) US3756524A (de)
AT (1) AT313127B (de)
BE (1) BE761995A (de)
CA (1) CA939038A (de)
CH (1) CH521916A (de)
ES (1) ES389535A1 (de)
FR (1) FR2083871A5 (de)
GB (1) GB1336239A (de)
HU (1) HU163198B (de)
NL (1) NL7017730A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844497A (en) * 1973-01-02 1974-10-29 Ppg Industries Inc Strand sensor for automatic knock-off device
US4001802A (en) * 1975-08-04 1977-01-04 General Motors Corporation Solid state thermistor switch
US4007457A (en) * 1974-02-08 1977-02-08 Zellweger, Ltd. Method of and apparatus for detecting faults in the operation of open-end spinning machines
US4106004A (en) * 1977-02-16 1978-08-08 Kuroda Mitura Twist detecting device
US4202506A (en) * 1976-05-03 1980-05-13 W. Schlafhorst & Co. Device for monitoring thread travel
US4214717A (en) * 1975-06-10 1980-07-29 Nippon Seren Co. Ltd. False reeling preventing apparatus for traverse thread reeling machines
US4783647A (en) * 1985-12-20 1988-11-08 Aeonic Systems, Inc. Sheet material manufacturing
US5301887A (en) * 1990-09-29 1994-04-12 W. Schlafhorst Ag & Co. Means for controlling the travel of a yarn in a textile machine
CN109319593A (zh) * 2018-09-20 2019-02-12 宜兴市佳信数控科技有限公司 一种用于超大型预应力钢绳缠线机的超重绕线静压结构
US20210340694A1 (en) * 2018-10-10 2021-11-04 Saurer Spinning Solutions Gmbh & Co. Kg Method for reducing errors in textile machines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU460319B2 (en) * 1970-12-30 1975-04-24 Johns-Manville Corporation Method and apparatus for monitoring filament motion
DE19547870A1 (de) * 1995-12-21 1997-06-26 Schlafhorst & Co W Verfahren und Vorrichtung zur Überwachung der Funktion einer Paraffiniereinrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549209A (en) * 1948-06-26 1951-04-17 Honeywell Regulator Co Control apparatus
US2926299A (en) * 1954-04-21 1960-02-23 Mcdermott Controls Inc Electrical instrument with thermistor sensing element
US3289192A (en) * 1964-04-10 1966-11-29 Peter G Davey Air flow monitoring enclosure intrusion alarm having retarded flowmeter
US3368212A (en) * 1964-12-08 1968-02-06 J H Emerson Company Gas flow monitor
US3411281A (en) * 1966-01-17 1968-11-19 Guido Carlo Device for indicating broken threads in spinning machines
US3501105A (en) * 1968-10-09 1970-03-17 Eastman Kodak Co Tension sensing device
US3587497A (en) * 1969-01-30 1971-06-28 Farah Mfg Co Inc Thread breakage detector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549209A (en) * 1948-06-26 1951-04-17 Honeywell Regulator Co Control apparatus
US2926299A (en) * 1954-04-21 1960-02-23 Mcdermott Controls Inc Electrical instrument with thermistor sensing element
US3289192A (en) * 1964-04-10 1966-11-29 Peter G Davey Air flow monitoring enclosure intrusion alarm having retarded flowmeter
US3368212A (en) * 1964-12-08 1968-02-06 J H Emerson Company Gas flow monitor
US3411281A (en) * 1966-01-17 1968-11-19 Guido Carlo Device for indicating broken threads in spinning machines
US3501105A (en) * 1968-10-09 1970-03-17 Eastman Kodak Co Tension sensing device
US3587497A (en) * 1969-01-30 1971-06-28 Farah Mfg Co Inc Thread breakage detector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844497A (en) * 1973-01-02 1974-10-29 Ppg Industries Inc Strand sensor for automatic knock-off device
US4007457A (en) * 1974-02-08 1977-02-08 Zellweger, Ltd. Method of and apparatus for detecting faults in the operation of open-end spinning machines
US4214717A (en) * 1975-06-10 1980-07-29 Nippon Seren Co. Ltd. False reeling preventing apparatus for traverse thread reeling machines
US4001802A (en) * 1975-08-04 1977-01-04 General Motors Corporation Solid state thermistor switch
US4202506A (en) * 1976-05-03 1980-05-13 W. Schlafhorst & Co. Device for monitoring thread travel
US4106004A (en) * 1977-02-16 1978-08-08 Kuroda Mitura Twist detecting device
US4783647A (en) * 1985-12-20 1988-11-08 Aeonic Systems, Inc. Sheet material manufacturing
US5301887A (en) * 1990-09-29 1994-04-12 W. Schlafhorst Ag & Co. Means for controlling the travel of a yarn in a textile machine
CN109319593A (zh) * 2018-09-20 2019-02-12 宜兴市佳信数控科技有限公司 一种用于超大型预应力钢绳缠线机的超重绕线静压结构
CN109319593B (zh) * 2018-09-20 2024-05-03 宜兴市佳信数控科技有限公司 一种用于超大型预应力钢绳缠线机的超重绕线静压结构
US20210340694A1 (en) * 2018-10-10 2021-11-04 Saurer Spinning Solutions Gmbh & Co. Kg Method for reducing errors in textile machines

Also Published As

Publication number Publication date
AT313127B (de) 1974-02-11
NL7017730A (de) 1971-09-28
HU163198B (de) 1973-06-28
CA939038A (en) 1973-12-25
DE2053478B2 (de) 1976-05-13
FR2083871A5 (de) 1971-12-17
ES389535A1 (es) 1973-06-16
CH521916A (de) 1972-04-30
DE2053478A1 (de) 1971-10-14
BE761995A (fr) 1971-07-01
GB1336239A (en) 1973-11-07

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