EP0016940B1 - Wanderndes Überwachungsgerät für die sukzessive Überwachung der Arbeitsbedingungen an jeder Spinnstelle einer Ringspinnmaschine - Google Patents

Wanderndes Überwachungsgerät für die sukzessive Überwachung der Arbeitsbedingungen an jeder Spinnstelle einer Ringspinnmaschine Download PDF

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Publication number
EP0016940B1
EP0016940B1 EP80100723A EP80100723A EP0016940B1 EP 0016940 B1 EP0016940 B1 EP 0016940B1 EP 80100723 A EP80100723 A EP 80100723A EP 80100723 A EP80100723 A EP 80100723A EP 0016940 B1 EP0016940 B1 EP 0016940B1
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EP
European Patent Office
Prior art keywords
carriage
thread
suction nozzle
sensor
spinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80100723A
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German (de)
English (en)
French (fr)
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EP0016940A1 (de
Inventor
Eduard Schenkel
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0016940A1 publication Critical patent/EP0016940A1/de
Application granted granted Critical
Publication of EP0016940B1 publication Critical patent/EP0016940B1/de
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/145—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements set on carriages travelling along the machines; Warning or safety devices pulled along the working unit by a band or the like

Definitions

  • the present invention relates to a wandering monitoring device for the successive monitoring of the working conditions at each spinning position of a ring spinning machine, both with respect to thread breaks as well as on formations on drafting rollers, the ring spinning machine having lowerable thread suction nozzles, with a yarn sensor, which indicates the presence of a yarn between the The delivery rollers of the drafting system and the spindle are scanned contactlessly, a second sensor which, when the thread breakage is determined, detects the presence of a fiber stream between the delivery rollers of the drafting system and the yarn breakage suction nozzle located directly under the lower delivery roller in their normal working position, whereby this determines the fiber stream from is deflected from its normal trajectory, which second sensor from a radiation source, which sends a beam onto the deflected fiber stream, and from a radiation receiver, which the from the deflected fiber stream receives the affected beam, and there is, in the absence of a fiber stream, an actuating device provided for the actuation of a roving feed interruption
  • a ring spinning machine for the definitive spinning out of the thread consists of a large number of spinning positions, usually more than 400, each of which has a drafting system in which the fiber supply (also known as a sliver) is drawn to the final fineness and then by means of a spindle and ring is spun into a thread while giving rotation and wound.
  • a drafting system in which the fiber supply (also known as a sliver) is drawn to the final fineness and then by means of a spindle and ring is spun into a thread while giving rotation and wound.
  • the present invention relates to the detection of certain working conditions at the spinning station and to the execution of a certain operating operation, namely the shutdown of the material supply if the risk of winding formation around a feed roller of the drafting system is determined.
  • CH-PS 571 588 or DE-OS 2 339 654
  • DE-OS 2 339 654 it is known from CH-PS 571 588 (or DE-OS 2 339 654) for the independent attachment of threads on ring spinning machines to simultaneously determine the absence of the yarn and of a fiber roll on the delivery rollers by means of a scanning device.
  • a light source is directed onto the track of the fiber ribbon emerging from the delivery rollers and not spun into a thread, which reflects the light beam onto a light-sensitive cell.
  • the track of the fiber ribbon subjected to the spinning process does not coincide with the track of the fiber ribbon no longer spun in, which is sucked off by the fixed suction device, but differs from it by a distance of a few millimeters.
  • the known wandering device has the disadvantage that it requires a very precise guidance of the device along the ring spinning machine, since the spatial distance between the two mentioned races of the fiber ribbon is very small.
  • precise guides require a high level of mechanical effort.
  • a wandering monitoring device for an automatic thread-tying device (thread applicator) for ring spinning machines which among other things also contains a device for detecting the fiber rolls on the delivery rollers of the drafting system. It consists of two wheels with axial openings, which are mounted very close to the delivery roller periphery. When a fiber roll builds up, the wheel is set in rotation by contact with the roll, which is visually determined. Instead of optical monitoring, a contact tongue for the lower metallic delivery roller is also proposed.
  • the mechanical scanning of the delivery roller also has the disadvantage that it requires a very precise and expensive guidance of the monitoring device along the machine; it is also relatively complicated to set up, which has an adverse effect on its price and reliability.
  • a monitoring device of the type mentioned at the outset is known from FR-A-2 390 523, in which, inter alia, a fiber flow deflector is also provided.
  • the fiber flow deflection device serves the purpose, in the event of thread breakage and controlled by a yarn sensor, to take up the fiber stream originating from the drafting system and carried along by the suction air flow of the suction system by suction and to feed it to a fiber detector.
  • This known monitoring device has the disadvantage that the fiber flow deflection device needs a moving suction source, which makes the device complicated and expensive.
  • monitoring device has a further actuating device by means of which the thread breakage suction nozzle can be lowered from its normal working position into a scanning position sufficiently distant for the contact-free detection of the fiber stream from the lower delivery roller, so that the second sensor sends a beam onto the deflected fiber stream.
  • the claimed lowering of the thread break suction nozzle creates optimal scanning conditions for contactless scanning by the second sensor, since it is possible to expose a space in the scanning zone in which only the fiber stream to be scanned can be present.
  • the beam sent by the radiation source can therefore only be influenced by the fiber stream that may be present.
  • the characteristic feature according to patent claim 1 thus ensures that the operational safety required for such a monitoring device is achieved.
  • the monitoring device according to patent claim 1 also solves sub-tasks c) and d), the further patent claims 2 to 6 relating to advantageous design variants which are of particular importance with regard to solving sub-task d).
  • a roving spool 1 which is rotatably supported in an attachment (not shown), supplies a roving 2 for feeding a spinning station.
  • the spinning station essentially consists of a drafting unit 3 having a pair of feed rollers 4, 5 and a pair of delivery rollers 6, 7, a thread eyelet 8 and a ring 9-rotor 10-spindle 11 combination.
  • the spindle 11 is rotatably mounted in a spindle bank 12 which extends over the entire length of the ring spinning machine and is set in rotation by means not shown.
  • the lower rollers 5 and 7 of the drafting system 3 are normally designed as metal cylinders extending over the entire length of the machine, while the upper rollers 4 and 6 mostly take the form of so-called tandem pressure pressed against the corresponding lower rollers 5 and 7 by means not shown -Rolls (common to two neighboring spinning positions).
  • a thread break suction nozzle 13 (see also FIG. 1a), which is formed in FIGS. 1 and 1a as the mouth 14 of a suction pipe 15.
  • the tubular design of the thread break suction shown here known in practice as a single suction, is not the only one which can be considered in the context of this invention; In this way, a suction pipe known per se, which has a nozzle per spinning station and extends over several adjacent spinning stations in the longitudinal direction of the spinning machine, can also be used.
  • the suction pipe 15 is connected in an articulated manner to a longitudinal channel 16, which is arranged inside the ring spinning machine and is under vacuum, e.g. by means of a rubber sleeve 17, so that the mouth 14 is displaceable in height.
  • the nozzle 13 exerts a suction effect during the entire operating time of the machine.
  • the suction pipe 15 carries on its front part a laterally attached extension 18 (Fig. 1a) which extends beyond the mouth 14 and whose function is described below.
  • a roving feed interruption device 19 is provided at each spinning position in front of the feed roller pair 4, 5 in the running direction of the roving 2, which can be actuated from the outside by the wandering monitoring device to be described later, with the purpose of controlling the roving feed to the drafting device 3 in a controlled manner accomplish.
  • the roving supply interruption device 19 of the ring spinning machine shown in FIG. 1 consists, for example, of a bore 20 through which the roving 2 is drawn and of a slide 21 by means of which the bore 20 can be closed.
  • the slider 21 is connected to an actuating rod 22, by means of which the slider 21 can be actuated from outside the machine.
  • other roving supply interruption devices can also be used in the context of this invention (cf. FIGS. 4 to 6).
  • the roving 2 is drawn off the roving spool 1 by the rotation of the pair of feed rollers 4, 5.
  • the roving 2 is warped as required, so that a thin fiber ribbon (see also FIGS. 2 and 3) leaves the pair of delivery rollers 6, 7, which are twisted in and spun into the finished yarn 23.
  • This passes through the thread eyelet 8 and, with the formation of a balloon 24, is wound onto the thread spool 25, which is on the spindle 11 and rotates with it.
  • the fiber ribbon 26 (FIG. 2) which emerges from the delivery rollers 6, 7 and is no longer spun is immediately sucked off and removed from the thread break suction nozzle 13.
  • the fiber material sucked through the thread break suction nozzle 13 is considered inferior waste, so that its amount must be kept as small as possible.
  • the monitoring device 27 traveling along the ring spinning machine consists of a supporting structure 28, not shown in any more detail, which is in contact with the lower rollers 29 on the floor and with the upper rollers 30 on a longitudinal member of the machine, e.g. supported on the spindle bench 12.
  • the upper rollers 30 assume the guiding function in the longitudinal direction of the machine.
  • the monitoring device 27 could also be guided in its upper part by the attachment (not shown) of the ring spinning machine, since the type of guidance of the device 27 plays a subordinate role.
  • the device 27 is equipped with suitable drive and centering means (both not shown) known per se, by means of which it is driven to move along the machine and can be stopped in a specific operating position in front of each spinning station.
  • control device 36 which contains the necessary circuits for the functionally appropriate control.
  • FIGS. 2 and 3 show the scanning zone of the fiber stream in an enlarged view.
  • the thread sensor determines that the yarn 23 is present; whereupon the monitoring device 27 does not stop at the spinning station, but moves on to the next spinning station.
  • Fig. 2 the case is also shown when a thread break has occurred at the spinning position and thus from the nip line x of the delivery rollers 6, 7 to the thread break suction nozzle 13 lying in the normal working position C, not a yarn 23 but a fiber stream 26 (in the shape of a fiber ribbon) flows.
  • the thread is attached (manually or automatically, if, for example, the monitoring device 27 itself also carries the means (not shown) for this function, or if another automatic device is specific for this purpose nothing stands in the way.
  • FIG. 2 the scanning position D, deflected according to the invention, of the thread break suction nozzle 13 is also shown in broken lines, which corresponds to the position of the nozzle 13 shown in FIG. 3.
  • Fig. 3 shows the arrangement of Fig. 2 with the thread break suction nozzle 13 lowered, i. H. if a thread break has occurred at the spinning position (dot-dash line shows the position of the normal-running yarn) and the thread break suction nozzle 13 has been lowered from the working position C into the scanning position D by the monitoring device 27 according to the invention.
  • An elongated fiber stream 42 is thus formed between the lower delivery roller 7 and the nozzle 13 and is determined by the light beam 44 of the light transmitter 43.
  • the extension of the light beam 44 is dotted with the light beam which is not reflected in the absence of the fiber stream 42 and which strikes the empty space behind the scanning zone, where there are no possibilities of influencing, in particular no possibility of reflection, not even through the surface of a roll around the lower delivery roller 7 formed winding 54, is present.
  • the lowering of the thread break suction nozzle 13 and the scanning of the fiber stream with the beam 44 in the lowered state of the nozzle 13 thus create the conditions for optimal operational reliability of the monitoring device.
  • FIG. 4 to 6 a variant of a monitoring device is shown, namely during different phases of the intervention at a spinning station.
  • the same elements as in Fig. 1 are designated by the same reference numerals.
  • the fiber flow deflection device consists of a carriage 55 which is displaceably guided transversely to the direction of travel of the monitoring device 27. This is guided on rollers 56 and can be driven by a motor 59 by means of gear 57 and thus meshing rack 58 be driven, e.g. B. via a chain drive 60.
  • the motor 59 is controlled by control means, not shown, so that the carriage 55 can stop at certain points in relation to the supporting structure 28.
  • the carriage 55 has a front section 61 facing the spinning positions of the ring spinning machine, in which a guide slot 62 is present.
  • the cam 63 engages in this guide slot 62 (see also FIG. 4a), which is fastened on the suction pipe 15 in the vicinity of the mouth 14 of the thread break suction nozzle 13.
  • the radiation source 43 and the receiver 45 of the z. B. by means of reflection working second sensor and the actuating device of the roving supply interruption device 19, in the form of an upward extension 64 with a plug 65, attached.
  • the relative position of the guide slot 62, the elements 43, 45 of the second sensor and the plug 65 must be selected so that they become effective at the correct time or in the correct position during the transverse displacement of the carriage 55 to the spinning position.
  • a device known per se with a funnel 66 and a rocker arm 67 is used as the roving feed interruption device 19.
  • the rocker arm 67 has at one of its ends a body 68 complementary to the interior of the funnel 66 and at the other end an extension 69.
  • the extension 69 assumes such a position that it is pushed by the plug 65 during the transverse displacement of the latter, whereby the rocker arm 67 tilts clockwise and the body 68 closes the funnel 66.
  • the roving 2 is clamped between the funnel 66 and the body 68 and thus torn between the funnel 66 and the feed rollers 4, 5, i.e. interrupted.
  • FIG. 4 shows a spinning position at which the yarn 23 is spun normally: the presence of a yarn is determined by the yarn sensor 31 and the monitoring device 27 continues to run along the ring spinning machine.
  • a fiber stream 42 is formed between the delivery rollers 6, 7 and the nozzle 13 pivoted downwards. This is provided that a fiber stream is already present on the clamping line x of the rollers 6 and 7 before the thread break suction nozzle 13 is lowered.
  • the monitoring device is drawn in the position in which the cam 63 of the thread breakage suction nozzle 13 has reached the lowest point in the guide slot 62, i.e. at which the nozzle 13 is furthest from its working position and thus there is an elongated fiber stream 42.
  • This position corresponds to the scanning position D of the thread break suction nozzle 13, in which the motor 59 is switched off by means not shown (e.g. a switch).
  • the light transmitter 43 and the light receiver 45 of the second sensor are also fastened on the slide 55, in such a position with respect to one another that the reflection of the light beam 44 emitted by the light transmitter 43 results from the fiber stream 42, as a reflected light beam 46, to the light receiver 45 takes place in the position of the carriage 55 shown in FIG. 5.
  • the light receiver 45 receives a light beam 46; it thus emits a signal to the control device, not shown, which signals that a thread break has occurred at the spinning position and the non-spun fiber material flows correctly into the thread break suction nozzle 13. This means: there is no winding.
  • the control unit will now restart the motor 59 in the opposite direction, i.e. the carriage 55 returns to its rest position shown in FIG. 4, which also brings the thread break suction nozzle 13 back to its normal working position.
  • Fig. 6 it is shown what happens when the light beam 44 with the carriage 55 in the position of the Fig. Is not reflected by a fiber stream 42, i.e. if (with high probability) the fibers are around a delivery roller, e.g. B. around the lower delivery roller 7, as a fiber winder 54, so that there is an acute risk of damage to the drafting system 3.
  • the light receiver 45 cannot receive a reflected light beam.
  • the control is now designed so that the motor 59 is started up again, but this time in the same direction as before, ie in the sense of a further approach of the carriage 55 to the spinning station.
  • the thread breakage suction nozzle 13 is practically no longer displaced from its scanning position, since the guide slot 62 has a section 70 parallel to the direction of movement of the slide 55.
  • the roving supply interruption device 19 is actuated by the plug 65, ie the supply of the roving 2 to the drafting device 3 is interrupted. This takes place in the variant of FIGS.
  • FIGS. 4 to 6 has the advantage of simplicity, since all monitoring functions of the monitoring device 27 can only be carried out by the movement of a single organ, namely the carriage 55, with a suitable control element ensuring that the movement of carriage 55 can be carried out in two phases, as explained in detail above.
  • FIG. 7 shows a variant of a detail of a monitoring device according to FIG. 4, in which the two-phase movement of the slide 71, which also has a guide slot 62, is realized by means of a spindle drive instead of by means of a rack and pinion drive.
  • the carriage 71 is rigidly connected to a driver 72, which has a threaded bore for a threaded shaft 73 mounted in the supporting structure 28.
  • the threaded shaft 73 is connected to a reversible motor 76 by means of a pair of wheels 74, 75.
  • the inclined edge 77 of the driver 72 serves at the same time as a switching cam for two switches 78 and 79 which are arranged along the movement path and which are electrically connected to the control device, also not shown, by lines which are not shown.
  • the carriage 71 is stopped in the scanning position D described above.
  • a fiber stream 42 FIG. 5
  • either the motor 76 is reversed and put into operation by the control device, with which the carriage 71 returns to the rest position, or is put into operation again in the same direction, until switch 79 is also actuated.
  • the roving feed interruption device 19 is actuated and the motor 76 is reversed, whereby the carriage 71 is brought back into the rest position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP80100723A 1979-03-27 1980-02-13 Wanderndes Überwachungsgerät für die sukzessive Überwachung der Arbeitsbedingungen an jeder Spinnstelle einer Ringspinnmaschine Expired EP0016940B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH282079 1979-03-27
CH2820/79 1979-03-27

Publications (2)

Publication Number Publication Date
EP0016940A1 EP0016940A1 (de) 1980-10-15
EP0016940B1 true EP0016940B1 (de) 1983-05-18

Family

ID=4242316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100723A Expired EP0016940B1 (de) 1979-03-27 1980-02-13 Wanderndes Überwachungsgerät für die sukzessive Überwachung der Arbeitsbedingungen an jeder Spinnstelle einer Ringspinnmaschine

Country Status (6)

Country Link
US (1) US4311916A (zh)
EP (1) EP0016940B1 (zh)
JP (1) JPS55128028A (zh)
DE (1) DE3063228D1 (zh)
ES (1) ES8104451A1 (zh)
IN (1) IN152642B (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042946A1 (de) * 1980-11-14 1982-07-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Spinnanlage
DE3123476C2 (de) * 1981-06-13 1984-05-17 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Arbeitsverfahren und Vorrichtung zum Stillsetzen einer Arbeitsstelle einer Spinn- oder Zwirnmaschine
US4452168A (en) * 1981-06-29 1984-06-05 At&T Technologies, Inc. Apparatus for detecting breaks in strand material
DE3331772C2 (de) * 1983-05-11 1985-04-25 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optische Fadenrißüberwachungsvorrichtung
US4581881A (en) * 1984-03-08 1986-04-15 Parks-Cramer Company Textile yarn spinning machine with improved supply strand interruption means
EP0187292B1 (de) * 1984-12-31 1988-09-21 Erwin Sick GmbH Optik-Elektronik Optische Fadenrissüberwachungsvorrichtung für Tuftingmaschinen
DE3524073A1 (de) * 1985-07-05 1987-01-08 Zinser Textilmaschinen Gmbh Verfahren und anlage zum beheben von fadenbruechen
JPS6290339A (ja) * 1985-10-14 1987-04-24 Toray Ind Inc 自動糸継ぎ機
DE3772577D1 (de) * 1987-12-24 1991-10-02 Barco Automation Nv Einrichtung zum messen eines fadens.
US5017797A (en) * 1988-11-24 1991-05-21 Murata Kikai Kabushiki Kaisha Device for detecting yarn
JPH07107212B2 (ja) * 1989-08-10 1995-11-15 東レエンジニアリング株式会社 紡績機械の糸継方法
IT1265050B1 (it) * 1993-08-06 1996-10-28 Savio Macchine Tessili Srl Procedimento e dispositivo per controllare l'integrita' e il livello qualitativo di un filato ritorto
DE102015005328A1 (de) * 2015-04-27 2016-10-27 Saurer Germany Gmbh & Co. Kg Vorrichtung und Verfahren zum Ermitteln des Durchmessers eines durch einen laufenden Faden gebildeten Fadenballons an einer Arbeitsstelle einer Textilmaschine
EP3748052B1 (en) 2019-06-07 2023-06-07 Sanko Tekstil Isletmeleri Sanayi Ve Ticaret Anonim Sirketi Ringspinning system for producing a yarn and method for stopping the supply of filaments to a drafting stage of a ringspinning system
CN112251861B (zh) * 2020-09-08 2022-10-11 太原科技大学 一种环锭纺细纱机断头检测装置及检测方法

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
BE395229A (zh) * 1932-03-24
DE1119156B (de) * 1959-03-05 1961-12-07 Ernst Jacobi Fa Fadenbruchabsaugvorrichtung fuer Spinnmaschinen, insbesondere fuer Ringspinnmaschinen
BE759950A (fr) * 1969-12-15 1971-06-07 Leesona Corp Appareil pour controler l'avance d'un fil
DE2139961A1 (de) * 1971-08-10 1973-03-01 Braunschweigische Masch Bau Diffusionsturm
DE2533655C2 (de) * 1974-10-09 1986-11-27 Toray Industries, Inc., Tokio/Tokyo Spinnmaschine zur Herstellung von gebündeltem Garn
DE2714353A1 (de) * 1977-03-31 1978-10-12 Fritz Stahlecker Textilmaschine mit vorrichtungen zum erfassen der querdimension des laufenden garns
CH619746A5 (zh) * 1977-05-11 1980-10-15 Rieter Ag Maschf
US4186309A (en) * 1977-10-13 1980-01-29 Web Printing Controls Co. Inc., Web monitoring and control apparatus for web handling machinery

Also Published As

Publication number Publication date
JPS55128028A (en) 1980-10-03
ES490564A0 (es) 1981-04-16
US4311916A (en) 1982-01-19
DE3063228D1 (en) 1983-07-07
EP0016940A1 (de) 1980-10-15
JPH0213049B2 (zh) 1990-04-03
IN152642B (zh) 1984-02-25
ES8104451A1 (es) 1981-04-16

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