EP0222101A1 - Procédé pour attacher un fil sur une machine de filature à friction - Google Patents

Procédé pour attacher un fil sur une machine de filature à friction Download PDF

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Publication number
EP0222101A1
EP0222101A1 EP86112564A EP86112564A EP0222101A1 EP 0222101 A1 EP0222101 A1 EP 0222101A1 EP 86112564 A EP86112564 A EP 86112564A EP 86112564 A EP86112564 A EP 86112564A EP 0222101 A1 EP0222101 A1 EP 0222101A1
Authority
EP
European Patent Office
Prior art keywords
yarn
air flow
winding
fibers
friction 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.)
Granted
Application number
EP86112564A
Other languages
German (de)
English (en)
Other versions
EP0222101B1 (fr
Inventor
Emil Briner
Richard Hieronymi
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.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT86112564T priority Critical patent/ATE42777T1/de
Publication of EP0222101A1 publication Critical patent/EP0222101A1/fr
Application granted granted Critical
Publication of EP0222101B1 publication Critical patent/EP0222101B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/52—Piecing arrangements; Control therefor for friction spinning

Definitions

  • the invention relates to a method for piecing a yarn on a friction spinning device, in which free-floating fibers are delivered in a fiber conveying channel to a friction spinning surface of a friction spinning means and are conveyed on this friction spinning surface to a yarn formation point, from which a yarn is drawn off by yarn removal means.
  • Such a device is known from DE-OS 3318687, in which a yarn end is picked up by a turned-back bobbin by a suction device and this sucked-in yarn is held in the gusset gap by two stopped friction spinning drums by means of two lifting devices.
  • the yarn Before free-flying fibers are delivered to this yarn, the yarn is opened by turning back the friction spinning drum, so that its fibers lie essentially without rotation in the gusset gap of the friction spinning drums.
  • the friction spinning drums are then put into operation at a reduced speed in the normal direction of rotation and free-flying fibers are fed to the opened yarn, and the resulting yarn is drawn off at a correspondingly reduced speed and fed to a connecting means.
  • the delivered yarn is picked up by a suction nozzle that functions as a yarn store.
  • the entire device is brought up to the operating speed and then decoupled from the necessary auxiliary drive means and driven by the normal drive means at the operating speed.
  • the method according to the invention achieves the object by the features listed in the characterizing part of the first claim.
  • FIG. 1 shows a fiber sliver dissolving device l known from the rotor open-end spinning method, with a disintegration roller (not shown) indicated by a drive shaft 11 and with a feed opening A provided for receiving a sliver (not shown) by means of an on the disintegration device l subsequent fiber conveying channel 2, by means of an air stream flowing through it, freely flying fibers are discharged onto a perforated, rotatable and drivable friction spinning drum 3, on which a yarn end 5 developing into a yarn 5 develops at a yarn formation point 7 (FIG. 2) .l is formed.
  • a counter-roller 4 which can also be rotated and driven, which is arranged in a contact-free manner, but very close (for example between 0.05 and 0.15 mm) to the friction spinning drum 3 and in parallel therewith, serves as an aid for screwing in the fibers in the gap between the rollers of the two rolls of yarn formation point 7.
  • the finished yarn 5 is drawn off by a take-off means provided as a take-off roller pair 6 pulled.
  • Such devices are known per se from previous publications in the patent literature and are therefore not described further.
  • English Patent No. 1223118 shows a basically the same method, but in which a perforated disc is provided instead of a perforated roller and a conical counter-roller instead of a cylindrical one.
  • a blowing channel 8 opens above the yarn formation point into the gusset gap of the two friction spinning drums 3 and 4 (also called friction spinning rollers 3 and 4).
  • the length G of the outlet mouth 9 of the blowing channel 8 corresponds at least to the length F (FIG. 1) of the perforation of the friction spinning drum 3, while the length H of the outlet mouth 22 of the fiber conveying channel 2 corresponds at most to the length F of the perforation.
  • This perforation is marked with P in FIG. 1 and is only shown in sections.
  • the width (not marked) and shape of the outlet mouth 9 of the blow channel 8 being understood to mean the design of the outlet mouth surface in order to be able to vary the intensity of the air flow at the mouth.
  • the width of the Outlet mouth can be designed differently within the length of the outlet mouth in order to obtain differences in the blowing effect along the outlet mouth.
  • the blow duct 8 also has a connecting piece l0, by means of which it can be connected to a compressed air network, not shown, with all known elements necessary for regulating the air pressure and the air quantity and for controlling the air flow.
  • FIG. 3a it is shown with the distance D.l that the outlet mouth 9 of the blowing channel can be further away from the yarn end 5.l than the outlet mouth 22 of the fiber conveying channel 2, which is at a distance K.
  • blow-out duct 8. 1 indicated by dash-dotted lines in FIG. 3 that the position of the duct is not tied to the position of the blow-out duct 8 shown with solid lines, without essentially detecting a loss of the blowing action described later would.
  • the air flow in the fiber conveying channel 2 for conveying the fibers 11 from the opening roller (not shown) belonging to the opening device 1 to the friction spinning drum 3 is generated in a manner known per se by a suction nozzle 23 located in the friction spinning drum 3, which is located on the surface of the friction spinning drum 3 on the length F of the Perforation P generates an intake air flow within which the yarn end 5. 1 and the outlet mouth 22 of the fiber conveying channel 2 are located on the one hand.
  • 8 fibers 11 are initially fed onto the friction spinning drum 3 by means of the fiber conveying channel, without first pulling these fibers off as yarn, so that a rotating spool 12 which is becoming larger and larger is formed.
  • a suction device l3 as a yarn receiving means is brought to the diverging side of the pair of draw-off rollers 6 rotating in the direction of the arrow such that it is able to take over the roll l2 emitted by the pair of draw-off rollers 6.
  • the guide tube 15 is, as shown in FIG. 2, between the end faces of the friction rollers 3 and 4 and the take-off rollers 6, in such a way that the axis of symmetry (not shown) of the guide tube lies essentially in an imaginary plane which includes the line of contact (not shown) of the two take-off rollers 6 and the location on the friction spinning drum 3 at which that Yarn 5 leaves this friction spinning drum.
  • the inner diameter of this guide tube l5 is larger than the outer diameter of the aforementioned fiber roll l2, for example twice as large.
  • the outlet mouth of the guide tube 15 can be provided with recesses such that the outlet mouth is adapted to the peripheral surface of the take-off rollers 6.
  • the guide tube can be designed as an injector guide tube l5.l by providing blow-in openings l6 and l7 which give a force component in the yarn withdrawal direction Z to an air stream guided through these openings.
  • the air flow mentioned is generated by a ring-shaped pressure chamber 18 which is provided with overpressure and is provided around these injection openings 16 and 17.
  • the pressure chamber 18 itself is fed via a connecting bore l9 from a compressed air system, not shown, of which a connecting pipe 20 is the last link.
  • the connecting pipe 20 is fixedly connected to a pressure housing 2l containing the pressure chamber l8 and the connecting bore l9.
  • the pressure housing 2l in turn serves to hold the injector guide tube l5.l and seals the pressure chamber l8 from the atmosphere.
  • the injector guide tube l5.l therefore has the advantage over the guide tube l5 of positively conveying the aforementioned winding l2 into the converging space of the take-off rollers 6 when spinning on.
  • the yarn 5 which is then also sucked in (see FIG. 7) is guided by means of this suction device l3 to the further elements belonging to the spinning machine (not shown) but not mentioned here.
  • the aforementioned piecing process can be carried out at full production speed, so that the yarn delivered by the take-off rollers corresponds to the yarn to be produced.
  • Such a device with said band is shown, for example, in French Patent Application No. 2480799.
  • a mechanical holding device (not shown) can also be used instead of the suction device l3.
  • the take-up device only has to be able to take up the winding 12 and the subsequent yarn 5 at the production speed in the manner mentioned.
  • the sequence is chosen so that the fibers 11 are first delivered and the airflow mentioned only after the receipt of a roll 12 of the desired or predetermined size is turned on.
  • the switching on of the air flow can be used before the fibers 11 are delivered in order to clean the surface of the friction spinning drum 3 and the counter roller 4 if necessary.
  • This cleansing air stream according to the former Genann th, either keep before the delivery of the fibers ll or be switched off before.
  • the dash-dotted line L indicates the mean flow line of the air flow guided in the blowing duct and shows with the angle ⁇ that this flow line L is inclined to the yarn end 5.l such that the air flow mentioned is directed towards the pair of draw-off rollers 6, force component R acting on the winding l2 is generated.
  • the angle ⁇ is advantageously chosen to be less than 45 degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP86112564A 1985-10-31 1986-09-11 Procédé pour attacher un fil sur une machine de filature à friction Expired EP0222101B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112564T ATE42777T1 (de) 1985-10-31 1986-09-11 Verfahren zum anspinnen eines garnes an einer friktionsspinnvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4685/85 1985-10-31
CH468585 1985-10-31

Publications (2)

Publication Number Publication Date
EP0222101A1 true EP0222101A1 (fr) 1987-05-20
EP0222101B1 EP0222101B1 (fr) 1989-05-03

Family

ID=4280711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112564A Expired EP0222101B1 (fr) 1985-10-31 1986-09-11 Procédé pour attacher un fil sur une machine de filature à friction

Country Status (6)

Country Link
US (1) US4680924A (fr)
EP (1) EP0222101B1 (fr)
JP (1) JPS62104931A (fr)
AT (1) ATE42777T1 (fr)
DE (1) DE3663156D1 (fr)
IN (1) IN168013B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0289028A1 (fr) * 1987-04-29 1988-11-02 Maschinenfabrik Rieter Ag Procédé et dispositif pour attacher un fil dans une machine de filature du type à friction
EP0294795A1 (fr) * 1987-06-12 1988-12-14 Maschinenfabrik Rieter Ag Procédé et dispositif pour rattacher un fil sur une machine de filature à friction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN165873B (fr) * 1984-10-15 1990-02-03 Rieter Ag Maschf
US5802826A (en) * 1993-08-06 1998-09-08 The United States Of America As Represented By The Secretary Of Agriculture Production of core/wrap yarns by airjet and friction spinning in tandem
CN109576832B (zh) * 2018-12-21 2023-06-20 武汉纺织大学 一种离心-摩擦纺纱装置及以其进行的制纱方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110150A1 (fr) * 1982-10-29 1984-06-13 Maschinenfabrik Rieter Ag Dispositif de filature à tuyère
DE3308250A1 (de) * 1983-03-09 1984-09-13 Stahlecker, Fritz, 7347 Bad Überkingen Oe-friktionsspinnvorrichtung
FR2546190A1 (fr) * 1983-05-21 1984-11-23 Schlafhorst & Co W Procede et dispositif pour la mise en marche d'un groupe de filage a friction
DE3445422A1 (de) * 1984-01-19 1985-07-25 Textilmaschinenfabrik Dr. Ernst Fehrer Ag, Leonding Verfahren zum anspinnen eines garnes bei einer friktionsspinnvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070811A (en) * 1974-09-24 1978-01-31 Ernst Fehrer Machine for spinning textile fibers
EP0034427B2 (fr) * 1980-02-16 1989-05-17 Hollingsworth (U.K.) Limited Dispositif et procédé de filature à bout libéré
CH663428A5 (de) * 1983-05-21 1987-12-15 Schlafhorst & Co W Verfahren und vorrichtung zur inbetriebnahme einer friktionsspinnmaschine.
DE3320768A1 (de) * 1983-06-09 1984-12-13 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
DE3325928A1 (de) * 1983-07-19 1985-01-31 Fritz 7347 Bad Überkingen Stahlecker Verfahren und vorrichtung zum anspinnen eines garnes an einem spinnaggregat einer oe-friktionsspinnmaschine
DE3410471A1 (de) * 1984-03-22 1985-09-26 Fritz 7347 Bad Überkingen Stahlecker Oe-friktionsspinnmaschine mit einer vielzahl von spinnaggregaten und einem verfahrbaren wartungsgeraet
DE3428890A1 (de) * 1984-08-04 1986-02-13 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und vorrichtung zum wiederanspinnen einer offenend-friktionsspinnvorrichtung
DE3432622A1 (de) * 1984-09-05 1986-03-13 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110150A1 (fr) * 1982-10-29 1984-06-13 Maschinenfabrik Rieter Ag Dispositif de filature à tuyère
DE3308250A1 (de) * 1983-03-09 1984-09-13 Stahlecker, Fritz, 7347 Bad Überkingen Oe-friktionsspinnvorrichtung
FR2546190A1 (fr) * 1983-05-21 1984-11-23 Schlafhorst & Co W Procede et dispositif pour la mise en marche d'un groupe de filage a friction
DE3445422A1 (de) * 1984-01-19 1985-07-25 Textilmaschinenfabrik Dr. Ernst Fehrer Ag, Leonding Verfahren zum anspinnen eines garnes bei einer friktionsspinnvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0289028A1 (fr) * 1987-04-29 1988-11-02 Maschinenfabrik Rieter Ag Procédé et dispositif pour attacher un fil dans une machine de filature du type à friction
US4856269A (en) * 1987-04-29 1989-08-15 Maschinenfabrik Rieter Ag Device for starting or recommencing spinning of a yarn in a friction spinning apparatus
EP0294795A1 (fr) * 1987-06-12 1988-12-14 Maschinenfabrik Rieter Ag Procédé et dispositif pour rattacher un fil sur une machine de filature à friction
US4918913A (en) * 1987-06-12 1990-04-24 Maschinenfabrik Rieter Ag Method of, and device for, performing a start spinning operation for spinning of a yarn in a friction spinning apparatus

Also Published As

Publication number Publication date
JPS62104931A (ja) 1987-05-15
IN168013B (fr) 1991-01-19
US4680924A (en) 1987-07-21
ATE42777T1 (de) 1989-05-15
DE3663156D1 (en) 1989-06-08
EP0222101B1 (fr) 1989-05-03

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