EP0488007B1 - Système d'étirage pour métier à filer pour fil de titre fin - Google Patents

Système d'étirage pour métier à filer pour fil de titre fin Download PDF

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Publication number
EP0488007B1
EP0488007B1 EP19910119622 EP91119622A EP0488007B1 EP 0488007 B1 EP0488007 B1 EP 0488007B1 EP 19910119622 EP19910119622 EP 19910119622 EP 91119622 A EP91119622 A EP 91119622A EP 0488007 B1 EP0488007 B1 EP 0488007B1
Authority
EP
European Patent Office
Prior art keywords
loading arm
rollers
drafting arrangement
shaped
supporting part
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 - Lifetime
Application number
EP19910119622
Other languages
German (de)
English (en)
Other versions
EP0488007A1 (fr
Inventor
Rolf Binder
Peter Schwengeler
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 EP0488007A1 publication Critical patent/EP0488007A1/fr
Application granted granted Critical
Publication of EP0488007B1 publication Critical patent/EP0488007B1/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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • the invention relates to a drafting system for a fine spinning machine, with at least three pairs of rollers assigned to one another in accordance with the preamble of patent claim 1.
  • Such a drafting system is known, for example, as DE-A-30 25 032.
  • a supporting and loading arm is described, on which slides for the top rollers are arranged.
  • Saddles are pivotally attached to these slides, which rotatably support the top rollers.
  • the saddle is designed as a leg that is open on one side. The pressure so exerted on the rollers coincides with their center line.
  • the saddle is provided with two side legs and the single top roller is attached to this saddle with an axle stub protruding from it on one side.
  • the contact pressure of the loading arm no longer coincides with the center line of the rollers of the drafting system, but a pressure is exerted laterally from it.
  • the object of the invention is to improve a drafting system of the type mentioned above in such a way that a practicable solution is offered for a lateral arrangement of the top rollers, that is to say that the actual stretching area and the pressure area are spatially separated so that the top and bottom rollers are always easily accessible.
  • the invention has the essential advantage that a proven single drafting system can be offered for high warpage. Because of the force moments occurring on the bearings and the rollers, it is particularly important that the carrier for the top rollers is mounted in a massive support part by means of bearing bushes, so that jamming is impossible. This is extremely important, especially with the very high distortions that are required in spinning machines with a belt feed, for example in a jet spinning machine. Due to the arrangement according to the invention, the drafting system is very easily accessible from the side, which is optimal for the automatic threading and for the roll change and the apron exchange, in particular the lower apron, is a decisive advantage. It has also proven to be particularly advantageous to regulate the contact pressure by means of an adjustable compression spring.
  • FIG. 1 a drafting system with a loading arm 1 is shown, on which the upper rollers 2, 3 and 4 are movably attached.
  • the associated lower rollers 5, 6 and 7 are arranged in a known manner and shown only schematically.
  • a strappy cage 8 is assigned to the middle top roller 3.
  • the middle rollers 3 and 6 each have an apron 9 and 9 '.
  • Each top roller 2, 3 and 4 are rotatably supported by a carrier or articulated saddle 10.
  • These carriers 10 are rotatably mounted about a pin 11 with a bearing bush 12 in an L-shaped support part or bearing saddle 13. This L-shaped support part 13 is free of play in the U-shaped Load arm 1 clamped and screwed to it.
  • An adjustable compression spring 14 is arranged between the carrier 10 and the L-shaped support part 13 and can be more or less compressed by means of an adjusting screw 15, a hexagon socket screw.
  • the adjusting screw 15 is designed such that a rotation of 360 ° corresponds to a round increase in the contact pressure, for example 20 N.
  • the U-shaped loading arm 1 is arranged so as to be rotatable about a fulcrum 16 which is firmly connected to the machine frame.
  • an L-shaped arm 17 with a U-shaped cross section is provided, which can be rotated about a pivot point 18, which is provided on the U-shaped loading arm 1 with respect to the pivot point 16.
  • This pivot point 18 is located approximately in the middle of the shorter part of the L-shaped lever arm 17, at the short end of which a hook 19 is provided.
  • this hook 19 engages around a latching pin 20 which is firmly connected to the machine frame.
  • the pressure to be exerted for the necessary delay is transmitted to the upper and lower rollers by the compression springs 14.
  • a channel part 21 is provided, in which a channel 22 is provided for extracting the resulting flight.
  • This channel 22 opens into a rotary tube 23 standing transversely thereon, the function of which is described with reference to FIG. 2.
  • the duct 22 is connected to a hose 25 by means of the suction represented by an arrow 24, a conventional vacuum pump or fan which is therefore not described further.
  • This hose 25 is pushed onto a flange 26 which is firmly connected to the machine frame.
  • a rubber seal 27 is provided between the channel part 21 and the flange 26 and is pressed into the flange 26 in a flange-like manner.
  • FIG. 2 is shown in cross section AA of Figure 1.
  • the same reference numerals were used for the same elements used.
  • a cuboid closed housing 28 is provided to the side of the loading arm 1 and is connected to the channel part 22 via the rotary tube 23.
  • the rotary tube 23 is closed with a closure cover 29, which can comprise a screw thread.
  • the housing 28 is provided above the upper rollers 2, 3 and 4 and has slot-like openings and wipers (not shown) at the corresponding points (see FIG. 4).
  • a saddle-like opening 30 in the rotary tube 23 and a corresponding delimitation at the channel end are provided for connecting the rotary tube 23 to the channel 22.
  • FIG. 3 shows the cross section B-B through the loading arm 1.
  • the carrier or articulated saddle 10 consists of two side cheeks 31, which include a bridge part 32.
  • the rotation of the carrier 10 is limited by stops 33 of the L-shaped support part 13.
  • the upper rollers 2, 3 and 4 are connected to the carrier 10 by an Allen screw 34.
  • Recesses 35 are also indicated by dash-dotted lines in the top of the loading arm 1 (compare the same recesses in FIG. 1).
  • a corresponding recess 17 ' is provided in the lever arm 17 (see FIG. 1) so that the spring force of the compression springs can be adjusted when the drafting system is closed.
  • FIG. 4 shows the cross section CC of FIG. 1 essentially through the strappy cage 8, which according to FIG. 4 can be loaded by a compression spring 14 '. From this figure it can be seen that the lever arm 17 is also bent in a U-shape. It can also be seen how the L-shaped support part 13 fits into the loading arm 1 without play.
  • the strappy cage 8 is in two parts and is rotatable about the axis of the top roller 3 (see Figure 1). In a variant, however, it can also be rotatably mounted about the same pivot point as the top roller 3.
  • a wiper 36 is provided on the cuboid housing 28 in the area of the associated slot, so that the flying parts attached to the apron can be loosened and suctioned off.
  • Figure 5 shows the cross-section D-D in Figure 1, i.e. the attachment of the lower rollers 5, 6 and 7.
  • These lower rollers are attached on both sides to a shaft 37, 38 and 39 respectively, i.e. the lower part of the drafting system is designed in two parts.
  • the lower rollers 5, 6 and 7 are assigned to one drafting system and the lower rollers 5 ', 6' and 7 'are assigned to the other drafting system and are detachably fastened to the respective shaft by means of Allen screws 40.
  • the shafts 37, 38 and 39 are mounted with ball bearings 41, 41 ', 42, 42' and 43, 43 'in a box-shaped housing 44.
  • the shafts 37, 38 and 39 are also each driven by a gear coupling 45, 46 and 47 on a drive, not shown and known per se, in the correct transmission ratio.
  • the gear coupling 47 of the front lower rollers 7, 7 ' is designed as a slip clutch so that the shaft 39 cannot break due to an undesired screwing in of the sliver around the input roller 7 or 7'.
  • the strappy cage, not shown, which belongs to the lower rollers 6 or 6 ', is also open and accessible on one side. This makes it easy to replace the bottom strap when the drafting system is running normally.
  • the respective flange 26 (26 ') and the associated rubber seal 27 (27') can be seen, which have already been described in FIG.
  • the prescribed drafting system is particularly suitable for automating the spinning process, particularly in the case of high distortions as are required for the band spinning. It has also proven to be particularly advantageous proved that the upper rollers 2, 3 and 4 and the lower rollers 5, 6 and 7 can be easily replaced with an Allen screw 34 or 40. Since the lever arm 17 extends over the entire length of the drafting system, the drafting system can be closed without great force. Another advantage is the closed, compact arrangement of the drafting system, which enables an automatic walking machine to pass close to the drafting system. Another advantage of the drafting system described above is that the compression springs are located on the center line of the axes of the top rollers 2, 3 and 4, so that no unnecessary force moments can arise. The design of the drafting system is also such that the resulting moments of force are balanced as far as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (7)

  1. Train d'étirage pour une machine à filer, avec au moins trois paires de rouleaux (2, 3, 4, 5, 6, 7), adjointes par paire les unes aux autres, dont au moins une paire de rouleaux (3, 6) est pourvue d'une cage a lanières (8) et des lanières (9, 9') lui appartenant, et ou les rouleaux inférieurs (5, 5'; 6, 6'; 7, 7') sont formés avec un entraînement commun pour au moins deux trains d'étirage disposés l'un a côté de l'autre, et les rouleaux supérieurs (2, 3, 4) sont maintenus individuellement, d'une manière élastique, dans un bras de pression (1), chacun dans un porteur pouvant pivoter (10), et sont disposés latéralement par rapport au bras de pression (1),
    caractérisé par le fait que
    le bras de pression (1) possède un profil en forme de U, et le porteur pouvant pivoter (10) est maintenu sur une pièce d'appui (13) en forme de L à l'aide de coussinets (12), et ou la pièce d'appui (13) est fixée sans jeu dans le bras de pression (1) en forme de U, et ou le porteur pouvant pivoter (10) est formé d'une seule pièce qui est constituée de deux joux latérales (31) avant une épaisseur d'au moins 5 mm embrassant la pièce d'appui (13), et une partie massive de pont (32) située entre les deux, et qu'un ressort de pression (14), que l'on peut régler a l'aide d'une vis (15), est disposé entre le porteur (10) et la pièce d'appui (13), et où la force de pression sur chaque rouleau supérieur correspondant (2, 3, 4) est dirigée directement sur la ligne d'axe de chaque rouleau.
  2. Train d'étirage selon revendication 1,
    caractérisé par le fait que
    la cage à lanières (8) est maintenue sur l'axe du rouleau supérieur (3) lui appartenant, et un ressort de pression (14) réglable est prévu entre la cage à lanières (8) et la pièce d'appui (13).
  3. Train d'étirage selon l'une des revendications précédentes,
    caractérisé par le fait que
    le bras de pression (1) est constitué d'un profil d'acier avant une épaisseur d'au moins 4 mm.
  4. Train d'étirage selon l'une des revendications précédentes,
    caractérisé par le fait que
    la pièce d'appui (13) est formée en métal léger, et possède une partie de base et une partie dirigée vers le haut avant une épaisseur d'au moins 10 mm.
  5. Train d'étirage selon l'une des revendications précédentes,
    caractérisé par le fait
    qu'un bras de levier (17) est prévu sur le bras de pression (1), afin de fermer le train d'étirage, qui est essentiellement en forme de L, dont le point de rotation (18) est prévu dans sa petite extrémité et vers l'extrémité libre du bras de pression (1), et qui recouvre le bras de pression (1) dans sa position fermée.
  6. Train d'étirage selon l'une des revendications précédentes,
    caractérisé par le fait que,
    au-dessus des rouleaux supérieurs (2, 3, 4), un carter en forme de parallélipipède (28), avec des fentes, est prévu dans la zone des rouleaux supérieurs, qui est articulé d'une manière pivotante et parallèle au bras de pression (1), et qui est relié à un dispositif d'aspiration (24) pour extraire les duvets.
  7. Train d'étirage selon revendication 6,
    caractérisé par le fait
    qu'un racleur (36) est prévu sur le carter en forme de parallélipipède (28), a fleur avec la fente correspondante, dans la zone des fentes et'ou de la lanière supérieure (9).
EP19910119622 1990-11-27 1991-11-18 Système d'étirage pour métier à filer pour fil de titre fin Expired - Lifetime EP0488007B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3753/90 1990-11-27
CH3753/90A CH683698A5 (de) 1990-11-27 1990-11-27 Streckwerk für eine Feinspinnmaschine.

Publications (2)

Publication Number Publication Date
EP0488007A1 EP0488007A1 (fr) 1992-06-03
EP0488007B1 true EP0488007B1 (fr) 1995-01-04

Family

ID=4262755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910119622 Expired - Lifetime EP0488007B1 (fr) 1990-11-27 1991-11-18 Système d'étirage pour métier à filer pour fil de titre fin

Country Status (5)

Country Link
EP (1) EP0488007B1 (fr)
JP (1) JPH062229A (fr)
CH (1) CH683698A5 (fr)
CZ (1) CZ280646B6 (fr)
DE (1) DE59104150D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ302816B6 (cs) * 2010-05-04 2011-11-23 Šafár@Václav Zpusob protahování vlákenných útvaru a zarízení k provádení zpusobu
CZ302875B6 (cs) * 2010-06-21 2011-12-28 Šafár@Václav Prutažné ústrojí textilního stroje
CN113026155A (zh) * 2021-04-15 2021-06-25 常州环锭纺织机械有限公司 一种亚麻湿纺细纱机前区可调压力棒装置及其使用方法
CH719128A1 (de) 2021-11-09 2023-05-15 Saurer Intelligent Technology AG Streckwerk für eine Textilmaschine.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025306B (de) * 1957-03-13 1958-02-27 Schubert & Salzer Maschinen Oberwalzentrag- und -belastungsarm fuer Streckwerke von Vorspinn- und Feinspinnmaschin
US3412434A (en) * 1965-08-19 1968-11-26 Fusaroli Goffredo Upper roller supporting arm for textile dressing and spinning machines
DE3025032A1 (de) * 1980-07-02 1982-01-21 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Oberwalzentrag- und -belastungsarm fuer streckwerke von spinnereimaschinen

Also Published As

Publication number Publication date
DE59104150D1 (de) 1995-02-16
CZ280646B6 (cs) 1996-03-13
JPH062229A (ja) 1994-01-11
EP0488007A1 (fr) 1992-06-03
CS360191A3 (en) 1992-06-17
CH683698A5 (de) 1994-04-29

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