EP0206198A2 - Moyen de filature par friction pour un dispositif de filature par friction - Google Patents

Moyen de filature par friction pour un dispositif de filature par friction Download PDF

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Publication number
EP0206198A2
EP0206198A2 EP86108187A EP86108187A EP0206198A2 EP 0206198 A2 EP0206198 A2 EP 0206198A2 EP 86108187 A EP86108187 A EP 86108187A EP 86108187 A EP86108187 A EP 86108187A EP 0206198 A2 EP0206198 A2 EP 0206198A2
Authority
EP
European Patent Office
Prior art keywords
friction spinning
fibers
formation point
spinning means
holes
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
EP86108187A
Other languages
German (de)
English (en)
Other versions
EP0206198A3 (en
EP0206198B1 (fr
Inventor
Herbert Stalder
Arthur Würmli
Josef Baumgartner
Emil Briner
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
Publication of EP0206198A2 publication Critical patent/EP0206198A2/fr
Publication of EP0206198A3 publication Critical patent/EP0206198A3/de
Application granted granted Critical
Publication of EP0206198B1 publication Critical patent/EP0206198B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01H4/04—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 imparting twist by contact of fibres with a running surface
    • D01H4/16—Friction spinning, i.e. the running surface being provided by a pair of closely spaced friction drums, e.g. at least one suction drum
    • D01H4/18—Friction drums, e.g. arrangement of suction holes
    • 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
    • D01H4/04—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 imparting twist by contact of fibres with a running surface
    • D01H4/16—Friction spinning, i.e. the running surface being provided by a pair of closely spaced friction drums, e.g. at least one suction drum

Definitions

  • the invention relates to a friction spinning means in the form of a perforated drum, a perforated belt or a perforated disc for a friction spinning device for producing a yarn, as described in the preamble of claim 1.
  • Swiss patent application No. 4579184-2 describes a method and a device in which the free-flying fibers are released onto the friction spinning means and are held by the friction spinning means for transport to the game formation site in such a way that these fibers average an angle with the game formation site include that is less than 90 ° but greater than 0 °, ie the fibers are delivered neither in the direction of movement of the friction spinning means nor parallel to the thread formation site, but in an intermediate position.
  • the game formation point is to be understood as the distance on the friction spinning means on which the so-called game end is formed.
  • FIG. 1 of a device according to the invention has a breakup roller 1 known from the rotor open-end spinning process, which is mounted and drivable in a housing 2 (only partially shown).
  • This opening roller 1 is provided with needles 3 or teeth - '(not shown) in a manner known per se for opening a sliver into individual fibers.
  • disintegration units with such disintegration rollers are known from rotor open-end spinning and are therefore described further at night.
  • the housing 2 has a fiber outlet opening 4 to which a fiber f örderkanal 5 connects, after the to the cylindrical surface of a Fritationsspinntrommel 6 opens.
  • This friction spinning drum 6 is perforated, as shown with section A, and includes a suction channel (not shown) which delimits a suction zone on the circumference of the friction spinning drum 6, which extends from the mouth 7 of the conveying channel 5 to the thread end 8 of the yarn 9 and a length has at least the length L of the mouth 7.
  • the game end 8 is formed in a manner known per se in the area of the game formation point 10.
  • This air flow which is generated by the suction channel and flows through the fiber conveying channel 5, detaches the fibers 13 detached from the needles 3 and freely flying in the conveying channel 5 within the suction zone on the surface part of the rotating friction drum 6 delimited by the mouth 7 of the conveying channel 5, and ultimately, turned in the manner mentioned earlier to form the game 9 and the game formation point 10.
  • the friction spinning drum 6 rotates in a direction indicated by the arrow U.
  • the finished yarn 9 is drawn off in a draw-off direction B by a pair of draw-off rollers 11.
  • the pair of take-off rollers can also be provided on the opposite end face of the friction spinning drum 6, which is shown with the dash-dot roller pair 11.1, i.e. the yarn can also be drawn off in the C direction.
  • the first mentioned friction spinning drum 6 can be assigned a second friction spinning drum 12, which is arranged so close to the first friction spinning drum 6 that the yarn formed in the gusset gap of both friction spinning drums is turned to a firmer yarn than without this second drum 12.
  • the direction of rotation of the drum 12 corresponds to the direction of rotation of the drum 6, which is why both directions of rotation are designated by U.
  • Fig. 1 further shows that the fiber feed channel 5 is arranged with an inclination marked with the angle ⁇ , the angle a being less than 90 ° and by an imaginary extension of the mouth 7 and a lower wall 14 (as viewed in Fig 1) of channel 5 is included.
  • the mouth 7 and the line forming the yarn formation point 10 are arranged essentially parallel, but with a predetermined distance F from one another.
  • the fibers 13 are seen with their front end, seen in the flow direction S, when they reach the friction spinning drum 6 and conveyed in the circumferential direction U against the yarn end 8, while the subsequent part of the same fiber is conveyed further in the flow direction S, so that the fiber performs a so-called "rollover" and comes to rest on the friction spinning drum 6 in a position marked with the angle y and opposite to the yarn formation point in comparison with the inclination of the fiber conveying channel.
  • a fiber in this position is marked with 13.1.
  • the angle y is by such a fiber and the yarn end 8, respectively. included by the distance resulting from the yarn formation point 10.
  • the fibers lie on the drum in the position marked with the angle y with a smaller angle y. If, on the other hand, the friction spinning drum has a higher peripheral speed than the free fibers emerging from the mouth, the fibers are stretched by the friction spinning drum when they are grasped and are taken up essentially in the circumferential direction on the friction spinning drum and in the yarn end being formed at the point of formation of the thread.
  • the air flow of the individual holes 15 resulting in the perforation of the friction spinning drum has an influence on the position of the fibers 13.1 on the drum 6, the fibers following the "rollover" for the position 13.1 depending on the intensity of the air flow through the holes 15 lay along the corresponding row of holes marked with the angle ⁇ . It depends on the relationship between air speed and peripheral speed of the friction spinning drum whether the fiber comes to lie along the row of holes with the larger angle or along the row of holes with the smaller angle ⁇ .
  • the holes 15 are arranged such that the straight lines 16 connecting the hole centers each form an angle ⁇ with the thread formation point which is greater than 0 ° but less than 90 °.
  • This angle ⁇ advantageously has a maximum of 80 ° and a minimum of 5 °. It is particularly advantageous if the smaller of the two angles is provided between 30 ° and 10 °, in order thereby to deposit the majority of the delivered fibers in this area on the drum 6.
  • the arrangement of the row of holes, as shown in FIGS. 3 and 7, can be different, it being advantageous if the straight lines 16 connecting the centers of the holes are arranged such that, as shown in FIG. 7, they form triangles in which at least two pages are the same length.
  • At least the straight lines connecting the hole centers are each opposite to the feed channel and inclined with the predetermined angle ⁇ to the yarn formation point. This ensures that the fiber also lies in the fiber layer 13.1 after the so-called "rollover".
  • the fibers lie at the beginning of the yarn formation point 10, viewed in the yarn take-off direction, with a smaller angle ⁇ in the fiber layer 13.1 and the fibers at the end of the thread formation point with a larger angle ⁇ in this fiber layer.
  • This tendency is accommodated by the arrangement of the holes 15 which have rows of holes with a small and a large angle ⁇ .
  • the speed and quantity of the air flow emitting the fibers onto the sieve surface of the friction spinning means is selected in such a way that the fibers are very likely to lie on the sieve surface of the friction spinning means in one of the two directions given with the angle ⁇ , this essentially ensures no fiber comes to lie parallel to the yarn end or perpendicular to the friction spinning drum.
  • This intensity of the air flow depends on the excess pressure in the suction channel mentioned, on the free air passage area through the holes and on the possibility of sucking air into the delivery channel.
  • the angle y corresponds to the angle ⁇ .
  • 4 and 5 show a variant of the device according to the invention, in that instead of a friction spinning drum a friction spinning disc 20 is provided, which is loaded with free-flying fibers 13 by means of a fiber conveying channel 21.
  • the fiber conveying channel 21 has an inclination which is also marked with the angle a. This angle of inclination ⁇ is enclosed by a lower wall 22 (viewed in the direction of view in FIG. 4) of the fiber conveying channel 21 and by the surface of the disk 20.
  • a conical roller 27 is provided in this variant, which is mounted so that it can be rotated and driven by means of a shaft 28.
  • the friction spinning disc 20 is perforated with through holes 29 (at least partially shown in FIG. 4) on a width at least corresponding to the length of the thread formation point 24, so that the suction channel 26 is capable of conveying the necessary conveying air of the fibers 13 to be sucked through the holes 29.
  • the holes 29 of the friction spinning disc 20 are also arranged in an analogous manner to the friction spinning drum 6 in such a way that the straight lines 31 connecting the center of the holes form an angle (FIG. 6) with the thread forming part which is less than 90 ° and greater than 0 °.
  • the same conditions apply to the drum 6 with respect to the maxima and minima of the angle and the arrangement of the rows of holes.
  • at least two of the straight lines connecting the center of the holes are each opposite to the feed channel and are inclined at the predetermined angle ⁇ to the point of formation of the thread.
  • the rows of holes must be arranged within predetermined circle segments, which is shown in FIG. 6.
  • the fibers 13 are conveyed against the friction spinning disc 20 in the manner described, they also have the tendency to lie on the friction spinning disc in the direction of the rows of holes according to the angle ⁇ . As a result, the fibers are also taken up by the yarn end at the yarn formation point 24 at the angle y already described, respectively. rotated around this gamende. If the fibers lie exactly on the rows of holes with the angle ⁇ , the angle y corresponds to the angle ⁇ .
  • the friction spinning disc is mounted rotatably and drivably by means of a shaft 30 and rotates in the direction M (FIG. 5).
  • the conical roller 27 in turn rotates in the direction Q.
  • Friction spinning belts are known per se from the patent literature on friction spinning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP86108187A 1985-06-18 1986-06-16 Moyen de filature par friction pour un dispositif de filature par friction Expired - Lifetime EP0206198B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521665 1985-06-18
DE19853521665 DE3521665A1 (de) 1985-06-18 1985-06-18 Friktionsspinnmittel fuer eine friktionsspinn-vorrichtung

Publications (3)

Publication Number Publication Date
EP0206198A2 true EP0206198A2 (fr) 1986-12-30
EP0206198A3 EP0206198A3 (en) 1988-01-27
EP0206198B1 EP0206198B1 (fr) 1991-08-21

Family

ID=6273486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108187A Expired - Lifetime EP0206198B1 (fr) 1985-06-18 1986-06-16 Moyen de filature par friction pour un dispositif de filature par friction

Country Status (5)

Country Link
US (1) US4696155A (fr)
EP (1) EP0206198B1 (fr)
JP (1) JPS6228413A (fr)
DE (2) DE3521665A1 (fr)
IN (1) IN167332B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832110A1 (de) * 1988-09-21 1990-03-29 Rieter Ag Maschf Friktionsspinnvorrichtung

Families Citing this family (5)

* 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
DE3629378A1 (de) * 1986-08-29 1988-03-03 Fritz Stahlecker Walze fuer eine oe-friktionsspinnvorrichtung und ihre herstellung
DE4007607A1 (de) * 1990-03-09 1991-09-12 Schubert & Salzer Maschinen Spinnverfahren und vorrichtung zur herstellung eines garnes
JP2611520B2 (ja) * 1990-09-11 1997-05-21 三菱電機株式会社 歪み検出器
EP0668944A4 (en) * 1992-08-18 1995-09-06 Alan Nicholas Jacobsen Improved method and apparatus for open end yarn spinning.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1231198A (fr) * 1967-09-11 1971-05-12
DE2361313A1 (de) * 1973-01-17 1974-07-18 Fehrer Ernst Verfahren zum spinnen textiler fasern
DE3318924A1 (de) * 1983-05-25 1984-11-29 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
DE3323189A1 (de) * 1983-06-28 1985-01-10 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionspinnen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT344552B (de) * 1976-02-02 1978-07-25 Fehrer Ernst Gmbh Vorrichtung zum spinnen textiler fasern
AT338665B (de) * 1976-02-10 1977-09-12 Fehrer Ernst Gmbh Vorrichtung zum spinnen textiler fasern
FR2383253A1 (fr) * 1977-03-09 1978-10-06 Vyzk Ustav Bavlnarsky Procede et dispositif de filage de fil par friction suivant le principe open-end
US4399650A (en) * 1978-10-26 1983-08-23 Alan Parker Friction type yarn spinner
DE3114093C2 (de) * 1980-04-19 1986-06-05 Hollingsworth (U.K.) Ltd., Accrington, Lancashire Walze für eine Friktionsspinnvorrichtung
AT390276B (de) * 1982-12-03 1990-04-10 Fehrer Textilmasch Vorrichtung zum herstellen eines garnes
DE3300636A1 (de) * 1983-01-11 1984-07-12 Fritz 7347 Bad Überkingen Stahlecker Oe-friktionsspinnvorrichtung
DE3316656A1 (de) * 1983-05-06 1984-11-08 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
AT385283B (de) * 1983-07-13 1988-03-10 Fehrer Textilmasch Vorrichtung zum herstellen eines garnes
DE3336547A1 (de) * 1983-10-07 1985-04-18 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
DE3403964A1 (de) * 1984-02-04 1985-08-08 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
JPS61152830A (ja) * 1984-12-27 1986-07-11 Toyoda Autom Loom Works Ltd 吸着加撚紡績装置の多孔ロ−ラ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1231198A (fr) * 1967-09-11 1971-05-12
DE2361313A1 (de) * 1973-01-17 1974-07-18 Fehrer Ernst Verfahren zum spinnen textiler fasern
DE3318924A1 (de) * 1983-05-25 1984-11-29 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
DE3323189A1 (de) * 1983-06-28 1985-01-10 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionspinnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832110A1 (de) * 1988-09-21 1990-03-29 Rieter Ag Maschf Friktionsspinnvorrichtung
US4938018A (en) * 1988-09-21 1990-07-03 Rieter Machine Workds, Ltd. Friction spinning machine

Also Published As

Publication number Publication date
EP0206198A3 (en) 1988-01-27
US4696155A (en) 1987-09-29
DE3680958D1 (de) 1991-09-26
EP0206198B1 (fr) 1991-08-21
DE3521665A1 (de) 1987-01-02
IN167332B (fr) 1990-10-06
JPS6228413A (ja) 1987-02-06

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