EP0296412A1 - Fadenabzugsrohr zum Abziehen eines Fadens aus einer Offenend-Spinnvorrichtung - Google Patents

Fadenabzugsrohr zum Abziehen eines Fadens aus einer Offenend-Spinnvorrichtung Download PDF

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Publication number
EP0296412A1
EP0296412A1 EP88109183A EP88109183A EP0296412A1 EP 0296412 A1 EP0296412 A1 EP 0296412A1 EP 88109183 A EP88109183 A EP 88109183A EP 88109183 A EP88109183 A EP 88109183A EP 0296412 A1 EP0296412 A1 EP 0296412A1
Authority
EP
European Patent Office
Prior art keywords
insert
tube
thread take
thread
connecting piece
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.)
Withdrawn
Application number
EP88109183A
Other languages
German (de)
English (en)
French (fr)
Inventor
Johann Pohn
Gottfried Schneider
Edmund Schuller
Ernst Domke
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0296412A1 publication Critical patent/EP0296412A1/de
Withdrawn legal-status Critical Current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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the present invention relates to a thread take-off tube for pulling a thread from the spinning element of an open-end spinning device, with a first and a second tube piece, which are connected to one another via a connecting piece which receives a chamber and which has a deflecting surface projecting into the chamber.
  • the deflection surface is part of a wall which is fastened in a connecting piece having a chamber (DE-GM 7.341.112).
  • the second piece of pipe opens at an angle to the cylindrical chamber of the connecting piece.
  • the object of the present invention is therefore to design a thread take-off tube of the type mentioned in such a way that it can be produced simply and in the same manner at all times.
  • the deflecting surface is part of an insert and has an insertion opening for this insert on the connecting side on its feed side facing the spinning element in the installed state, which opening between the front end of the insertion opening and the first tube piece or alternatively between the first and the second pipe section is axially secured.
  • the chamber widens in the length region of the insert, and this can be adjusted axially relative to the connecting piece by axially adjusting at least one of the two pipe pieces or against an insert of a different length interchangeable.
  • the insert protrudes more or less far into the chamber as desired, so that the insert is more or less intensive depending on the desired yarn failure acts on the thread.
  • the inner walls of the chamber are advantageously arranged essentially in continuation of the bores of the two pipe sections.
  • the arrangement of the inner walls essentially continues the bores the two pieces of pipe ensure a safe guidance of the thread back to the spinning element, so that the time for the return of the thread back into the spinning element is precisely defined. This increases piecing security.
  • the insert is expediently made of ceramic in order to achieve a long service life.
  • the insert has one or more edges protruding into the chamber. This edge advantageously extends or these edges extend obliquely to the thread path.
  • the two pipe pieces are mounted in the connecting piece.
  • the connector can be designed differently. So it can be provided that this consists of plastic and for receiving the two pipe pieces made of metal supports sleeves, each of which receives one end of the insert.
  • only a part of the inner walls of the chamber is formed by the insert, while the remaining part of the inner walls of the chamber is released by the insert.
  • the insert must have a defined position with respect to the thread not only in the axial direction, but also in the circumferential direction of the chamber, so that the insert can have an optimal effect on the thread in the take-off.
  • the insert is secured against rotation by a guide extending in the longitudinal direction of the connecting piece.
  • the guide extends parallel to the axis of the first tube piece facing the spinning element and ends in a bore for receiving the second tube piece. In this way, the insert is fixed in its exact position at both ends by the two pipe pieces.
  • the guide on its end facing the spinning device projects radially beyond the outer diameter of the first tube piece .
  • the first piece of pipe is preferably arranged eccentrically to the connecting piece, since a compact design is achieved in this way.
  • the guide is preferably delimited on its side facing away from the thread run by a wall of the connecting piece, thereby creating a seal the chamber is relieved to the outside.
  • the rotation of the guide is expediently carried out in that the guide has a polygonal cross section.
  • the thread take-off tube according to the invention is simple to manufacture, since it is composed of simple parts which can be assembled and fixed in a simple manner.
  • the insert can be brought into a defined position in a simple manner relative to the two pipe pieces, so that the effect of the insert can also be precisely defined. By avoiding unnecessary, protruding edges and jumps in diameter in the connecting piece, it is achieved that the thread for piecing can be returned to the spinning device in a safe and rapid manner.
  • FIG. 1 shows part of an open-end spinning device with a spinning element designed as a spinning rotor 1.
  • This spinning rotor 1 is housed in a housing, not shown, that is closed by a cover 2.
  • a fiber feed channel 3 is arranged, through which fibers 30 ge in the spinning rotor 1 in a known manner be delivered.
  • a thread take-off tube 4 opens out in the lid 2, through which the fibers 30 bound into the end of a thread 5 are drawn off.
  • the dissolution of a sliver (not shown) into fibers 30 as far as possible down to individual fibers in the spinning rotor 1 and the removal of the thread 5 from the spinning rotor 1 are carried out with the aid of conventional means, which are therefore not shown for this reason.
  • the thread take-off tube 4 has a first pipe section 40, with the aid of which the thread take-off tube 4 is mounted in the cover 2.
  • the thread take-off tube 4 also has a second pipe section 41 which is arranged at an angle with respect to the first pipe section 40.
  • the two pipe sections 40 and 41 are connected to one another via a connecting piece 42. This has on its feed side, which in the installed state faces the spinning rotor 1, an insertion opening 46 for receiving an insert 6, which is located on the inside of the curvature of the connecting piece 42.
  • a chamber 45 is delimited in the radial direction, which in the vicinity of the pipe sections 40 and 41 have essentially the same inner diameter as the two pipe sections 40 and 41, which abut against the two ends of the Insert 6 and secure it axially.
  • the insert 6 has on its side facing the chamber 45 a deflecting surface 601 for the thread 5, which can be designed differently.
  • the deflection surface 601 has one or more transverse ribs or edges 600.
  • the thread 5 rests against the transverse ribs or edges 600 of the insert 6 and thereby forms a swirl brake, so that the twist which forms in the thread section between the mouth 400 of the thread withdrawal tube 4 and the transverse ribs or edges 600 does not or only difficult to propagate into the thread section between the transverse ribs or edges 600 and the thread pulling device, not shown.
  • the thread section located in the tube section 40 thus takes a higher rotation, which is then propagated into the spinning rotor 1 and thus facilitate the incorporation of the fibers 30 into the end of the thread 5. It is therefore not necessary for a secure integration of the fibers 30 that a high twist is applied, so that this thread take-off tube 4 enables the production of soft twisted yarns.
  • the thread take-off tube 4 not only has the task of guiding the thread 5 during its withdrawal from the spinning rotor 1, but also serves the purpose of guiding the thread 5 during the piecing phase when it is returned to the spinning rotor 1 so that it is itself there can connect with the fibers accumulating in the spinning rotor 1.
  • a spinning negative pressure is generated in the usual way, which also affects a thread 5 through the thread take-off tube 4, which thread is inserted into the outlet end 410 of the tube section 41. Since jumps in diameter are avoided in the connecting piece 42, the end of a returned thread 5 can easily follow the air flow sucked to the spinning rotor 1, whereby a time-defined thread return is achieved.
  • inserts 6 of different shape e.g. with edges 600 or webs of different heights are used, so that the webs or edges 600 extend more or less far into the chamber 45, which is made possible by the fact that the chamber 45 expands accordingly and thus the necessary space for webs or edges of different heights 600 or different curvatures of the wall of the insert 6 forming the inside of the chamber 45.
  • the insert 6 can consist of any material. In the textile machine sector in particular, however, it has proven to be expedient if such elements which come into contact with the fiber material or with the thread 5 consist of ceramic.
  • a one-piece insert 6 is provided, which forms only a part of the peripheral wall of the chamber 45 and releases the remaining peripheral wall of the chamber 45.
  • the insert 6 can also have a first partial insert 60 having the deflection surface and a further partial insert 61, which together enclose the chamber 45.
  • FIG. 1 shows an insert 6 with a multiplicity of transverse ribs or edges 600 projecting into the thread run.
  • this edge 600 extends or these transverse ribs or edges 600 do not simply extend transversely to the thread run, but instead have one Inclined position, which is matched to the direction of rotation of the spinning rotor 1 (see Fig. 2). This inclined position ensures that the twist building up in the thread section in the region of the first tube piece 40 is retained even better and is thus also propagated into the spinning element.
  • the edges 600 can be designed in different ways and, depending on the desired effect, act on the thread 5 to a greater or lesser extent. This can be achieved by the relative arrangement of pipe sections 40 and 41 and insert 6. However, this can also be achieved by a corresponding profile of the deflecting surface 601. If at least one transverse rib or edge 600 is provided, this can also be of relatively narrow-edged to very rounded. Furthermore, the effect on the thread 5 can be varied by a different roughness of the deflection surface 601 or its transverse rib (s) or edge (s) 600. Both the propagation of rotation in the spinning element - which is designed as a spinning rotor 1 in the exemplary embodiment shown in FIG. 1 - and the hairiness and the feel of the finished thread 5 can be influenced.
  • FIG. 1 shows, the position of the insert 6 is fixed with the aid of the two pipe sections 40 and 41, since this insert 6 is in contact with these pipe sections 40 and 41 on both sides.
  • the attachment of the Pipe pieces 40 and 41 can be detachable, so that if necessary, the connecting piece 42 and the pipe pieces 40 to 41 can be replaced individually.
  • the pipe sections 40 and 41 can be connected in any way to the connecting piece 42, for example by soldering or gluing. In the exemplary embodiment shown in FIG. 3, however, the two are supported in the connecting piece 42 with the aid of sleeves 420 and 421, which in this case can also consist of plastic.
  • FIG. 3 shows an embodiment of a thread take-off tube 4 in which the degree of action of the insert 6 on the thread 5 (see FIG. 1) can be changed by changing the relative position of the insert 6 and the pipe section 41.
  • the two tube pieces 40 and 41 are also mounted in the connecting piece 42.
  • This has a guide 43 extending in the longitudinal direction, which extends parallel to the axis 401 of the first pipe section 40 and in which the bore 423 of the connecting piece 42 receiving the second pipe section 41 ends.
  • the efficiency of the insert 6 can be varied by slightly pulling the pipe section 41 out of the bore 422 and pushing the insert 6.
  • the insert 6 is axially secured by the pipe section 40, which is also pushed so that it remains in contact with the insert 6 (possibly with the interposition of a spacer ring 47 indicated by dashed lines). So that the radial space required for this axial adjustment of the insert is available, the chamber 45 is radially expanded in the exemplary embodiment shown in the length region of the insert 6. As an alternative, an insert 6 of a different length can also be used, as indicated by dashed lines in FIG.
  • the insert 6 is secured against rotation so that the insert 6 can assume a defined rotational position with respect to the thread path.
  • the guide 43 in the connecting piece 42 has a corresponding cross section, e.g. with two parallel side walls 430 and 431.
  • the insert 6 In order to be able to deflect the thread 5 over a larger angle in the connecting piece 42 without the deflection radius becoming too small, the insert 6 must have a certain length.
  • the insert 6 does not end radially with the outer diameter of the first pipe section 40, but projects radially beyond the outer diameter of the first pipe section 40 at its end facing the spinning device (e.g. spinning rotor 1). So that the connecting piece 42 does not take up too much space, this first pipe piece according to FIGS. 3 and 4 is arranged eccentrically to the connecting piece 42.
  • the insert 6 extends to the outside of the connecting piece 42.
  • the guide 43 has a polygonal cross section with a plurality of guide edges 432, 433, 434 and 435 (see FIG. 4).
  • plastic material 44 In order to avoid useless protruding edges and cavities on which flight could become lodged, the area of the guide 43 left free by the insert 6 is filled with plastic material 44 according to FIG.
  • any plastic material can be used, but a post-hardenable plastic material is particularly advantageous since it also serves to fix the individual elements of the thread take-off tube 4 to one another.
  • the thread take-off tube 4 can, as the above description shows, be modified in various ways, in particular by replacing individual elements with equivalents or with other combinations. So it is also not necessary that the inner cross section of the thread take-off tube 4 remains constant from the mouth 400 to the outlet end of the tube piece 41, but this cross-section can certainly also increase, as shown in FIG. 3, if this is for manufacturing or other reasons seems appropriate.
  • the insert 6 it is also not absolutely necessary for the insert 6 to extend from the pipe section 40 to the pipe section 41. Rather, the insertion opening 46, into which the insert 6 is inserted, can merge into a smaller bore (not shown) which is still part of the chamber 45 and into which the pipe section 41 opens. In this case, the insert 6 is axially fixed between the front end of the insertion opening 46 and the pipe section 41.
  • the thread take-off tube 4 can be used in various types of open-end spinning devices and is not restricted to devices with a spinning rotor 1. For example, it is entirely possible to use thread take-off tubes 4 of this type also in connection with friction spinning devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP88109183A 1987-06-25 1988-06-09 Fadenabzugsrohr zum Abziehen eines Fadens aus einer Offenend-Spinnvorrichtung Withdrawn EP0296412A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873720967 DE3720967A1 (de) 1987-06-25 1987-06-25 Fadenabzugsrohr zum abziehen eines fadens auf einer offenend-spinnvorrichtung
DE3720967 1987-06-25

Publications (1)

Publication Number Publication Date
EP0296412A1 true EP0296412A1 (de) 1988-12-28

Family

ID=6330254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109183A Withdrawn EP0296412A1 (de) 1987-06-25 1988-06-09 Fadenabzugsrohr zum Abziehen eines Fadens aus einer Offenend-Spinnvorrichtung

Country Status (3)

Country Link
US (1) US5044151A (enrdf_load_stackoverflow)
EP (1) EP0296412A1 (enrdf_load_stackoverflow)
DE (1) DE3720967A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094901A (en) * 1997-05-05 2000-08-01 Rieter Ingolstadt Spinnereimaschinenbu Ag Process and an apparatus for the pneumatic cleaning of a thread withdrawal tube
EP3854917A1 (de) * 2020-01-27 2021-07-28 Maschinenfabrik Rieter AG Fadenführungseinheit, offenend-rotorspinnmaschine und verfahren zum betreiben einer spinnstelle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235024C2 (de) * 1992-10-16 1996-07-25 Rieter Ingolstadt Spinnerei Fadenabzugsrohr
US6164556A (en) * 1999-04-01 2000-12-26 Dupre; Herman K. Portable snow making system for home use
DE19915924B4 (de) * 1999-04-09 2009-12-10 Rieter Ingolstadt Gmbh Fadenführungsrohr
DE19934893A1 (de) * 1999-07-24 2001-01-25 Rieter Ingolstadt Spinnerei Vorrichtung zum Befestigen eines auswechselbaren Teils einer ein Fadenabzugsrohr aufweisenden Fadenführung an einer Halterung einer Offenend-Spinnvorrichtung
DE10329612A1 (de) * 2003-06-23 2005-01-13 Wilhelm Stahlecker Gmbh Garnabzugseinrichtung für Offenend-Spinnvorrichtungen
DE102014107181A1 (de) * 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag Falschdrallvorrichtung für eine Offenendspinnvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421229A2 (fr) * 1972-11-30 1979-10-26 Alsacienne Constr Meca Procede et dispositif pour diminuer localement le pas des helices formees par les brins d'un produit filiforme souple torsade
GB2127442A (en) * 1982-09-08 1984-04-11 Alsacienne Constr Mat Tex Open end spinning devices
EP0220546A1 (de) * 1985-10-15 1987-05-06 Maschinenfabrik Rieter Ag Spinnvorrichtung zum Offenend-Spinnen
DE8702807U1 (de) * 1986-03-19 1987-05-27 Stahlecker, Fritz, 7347 Bad Überkingen Vorrichtung zum OE-Spinnen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2210684B1 (enrdf_load_stackoverflow) * 1972-11-30 1977-08-05 Sacm Alsacienne Const Mecaniqu
CS223961B2 (en) * 1978-03-28 1983-11-25 Alsacienne Constr Meca Facility for knitting the released fibres
DE3220402C2 (de) * 1982-05-29 1985-03-21 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Herstellen eines mit einer OE-Rotorspinnmaschine gesponnenen Garns
BE894649A (fr) * 1982-10-08 1983-04-08 Houget Duesberg Bosson Procede et appareillage de filature open-end
DE3323498A1 (de) * 1983-06-30 1985-01-10 Reinhold Küffner Innenausbau GmbH, 7512 Rheinstetten Montagezarge fuer tueren, fenster oder dergleichen zur verwendung bei ungleichen wandstaerken
CH672800A5 (enrdf_load_stackoverflow) * 1986-03-19 1989-12-29 Schlafhorst & Co W

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421229A2 (fr) * 1972-11-30 1979-10-26 Alsacienne Constr Meca Procede et dispositif pour diminuer localement le pas des helices formees par les brins d'un produit filiforme souple torsade
GB2127442A (en) * 1982-09-08 1984-04-11 Alsacienne Constr Mat Tex Open end spinning devices
EP0220546A1 (de) * 1985-10-15 1987-05-06 Maschinenfabrik Rieter Ag Spinnvorrichtung zum Offenend-Spinnen
DE8702807U1 (de) * 1986-03-19 1987-05-27 Stahlecker, Fritz, 7347 Bad Überkingen Vorrichtung zum OE-Spinnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6094901A (en) * 1997-05-05 2000-08-01 Rieter Ingolstadt Spinnereimaschinenbu Ag Process and an apparatus for the pneumatic cleaning of a thread withdrawal tube
EP3854917A1 (de) * 2020-01-27 2021-07-28 Maschinenfabrik Rieter AG Fadenführungseinheit, offenend-rotorspinnmaschine und verfahren zum betreiben einer spinnstelle

Also Published As

Publication number Publication date
DE3720967A1 (de) 1989-01-12
DE3720967C2 (enrdf_load_stackoverflow) 1993-09-16
US5044151A (en) 1991-09-03

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