EP2581476B1 - Doigt de pression pour un banc à broches - Google Patents

Doigt de pression pour un banc à broches Download PDF

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Publication number
EP2581476B1
EP2581476B1 EP12006279.9A EP12006279A EP2581476B1 EP 2581476 B1 EP2581476 B1 EP 2581476B1 EP 12006279 A EP12006279 A EP 12006279A EP 2581476 B1 EP2581476 B1 EP 2581476B1
Authority
EP
European Patent Office
Prior art keywords
roving
opening
slot
press finger
extent
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.)
Active
Application number
EP12006279.9A
Other languages
German (de)
English (en)
Other versions
EP2581476A3 (fr
EP2581476A2 (fr
Inventor
Franz Machnik
Karl-Heinz Mack
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
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Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2581476A2 publication Critical patent/EP2581476A2/fr
Publication of EP2581476A3 publication Critical patent/EP2581476A3/fr
Application granted granted Critical
Publication of EP2581476B1 publication Critical patent/EP2581476B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/04—Doffing arrangements integral with spinning or twisting machines
    • D01H9/046—Doffing arrangements integral with spinning or twisting machines for flyer type machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/24—Flyer or like arrangements
    • D01H7/26—Flyer constructions
    • D01H7/30—Flyer constructions with guide channels formed in legs, e.g. slubbing flyers
    • D01H7/32—Flyer constructions with guide channels formed in legs, e.g. slubbing flyers with pressing devices

Definitions

  • the present invention relates to a press finger for a roving machine comprising a press finger arm and a press finger bed and adapted to guide a roving during the formation of a bobbin on a roving machine.
  • the Pressfingerpritsche has an opening for the implementation of a roving, which has a longitudinal extent in the direction of the roving yarn through the opening and transverse to the running direction of the roving a transverse extent.
  • the Pressfingerpritsche also has a opening into the opening slot for introducing a Vorgarnes in the opening, which forms an angle of less than 45 ° with the running direction of the roving.
  • a roving machine also called flyer, processes a conveyor belt to a roving wound on so-called roving bobbins. These roving bobbins can be further processed into yarn on ring spinning machines.
  • the stretch band first passes through a drafting system.
  • the roving is then stored on the flyer bobbin by means of so-called flyer wings, which rotate around the flyer bobbin. This gives the roving at the same time the required rotation.
  • the spool is movable in the direction of the axis of rotation of the Flyerglagel.
  • To guide the roving a presser finger is attached to the Flyer Stahl.
  • the roving is automatically separated. For a raffle reserve is created with less rotation.
  • the storage of the roving reserve can be done at the top or bottom of the flyer bobbin.
  • the relative movement can be done by an upward or downward movement of the flyer spool and by a rotation of the wings and / or the coil.
  • Press fingers for roving machines have long been known and, for example, in the US 2,046,376 described. Its press finger bed has a slot through which the roving is performed. In the entry area of the roving, the cross section of the opening is larger than in the exit area, whereby a compaction of the roving is achieved.
  • a slot is present, which opens into the slot, runs perpendicular to the direction of the roving and is directed upward in the direction of attachment of the flyer wings.
  • a movement of the bobbin must take place away from the wings, ie the bobbin is lowered for separation.
  • the DE 30 23 241 A1 discloses a presser finger whose press finger plank has a circular opening.
  • the slot forms an acute angle with the running direction of the roving and is arranged on the upper side of the platform. Due to the oblique course of the slot, the unthreading of the roving during the separation of a roving reserve arranged at the upper edge of the bobbin is made more difficult, but in the end, the threading can not be prevented.
  • the EP 0 686 713 B1 discloses a press finger bed with a pear-shaped opening which improves the compaction of the roving should. A slot is in the lower region of the bunk horizontally, that is, arranged parallel to the running direction of the roving.
  • the presser finger is suitable for separating the roving in the upper area of the flyer bobbin.
  • the roving is positioned in the mouth region of the slit and is threaded through it.
  • the closest prior art is by the EP 1 666 650 B1 formed, since here is trying to solve the problem of unthreading.
  • the document discloses a press finger plank with a circular opening and a slot which opens tangentially to the upper portion of the opening.
  • the slot forms with the circular opening a retaining wing, which has a lateral inclination in its front upper portion, wherein it protrudes slightly in the direction of the flyer coil side facing away from the platform.
  • the inclination of the retaining wing may reduce the risk of unthreading, but the result is not yet sufficiently satisfactory.
  • the exact bending of the retaining wing manufacturing technology consuming.
  • the longitudinal extent of the opening is greater than the transverse extent and the distance of the mouth region of the slot from the end of the longitudinal extent, which faces the Pressfingerarm is greater than half the transverse dimension in the running direction of the roving.
  • the present invention is therefore based on a specific shape of the opening and a specific arrangement of the slot.
  • An opening with a larger longitudinal extent alone does not bring any advantage with regard to the risk of unthreading.
  • the inventive arrangement of the slot is made possible only by an elongated opening.
  • the longitudinal extent and transverse extent are identical.
  • An arrangement of the slot such that the mouth region of the slot has a distance from the end of the longitudinal extent, which faces the pressing finger arm, in the running direction of the roving, which is greater than half the transverse dimension, is virtually impossible for a circular opening.
  • the retaining wing which forms the opening with the slot, can be considerably lengthened, and thus a threading out can be reliably prevented. An inclination of the retaining wing is not required.
  • the production of an elongated opening causes no significant additional expense compared to a circular opening.
  • the opening is formed as a slot, wherein the longitudinal extent is limited by semicircles and the transverse extent by mutually parallel longitudinal sides.
  • the existing in a slot long long straight sides in addition, prevent the unthreading.
  • the slot opens in the region of the long sides in the opening. Thereby, the distance of the mouth region of the slot from the end of the longitudinal extent, which faces the Pressfingerarm, in the running direction of the roving then greater than half the transverse extent.
  • the opening may have the shape of an ellipse.
  • the opening may be pear-shaped.
  • the known in the prior art advantages of the pear shape can be used. As is known, has the narrower end in the direction of the roving.
  • the longitudinal extent is increased by at least 50% with respect to the transverse extent. That is, for a typical transverse dimension of 5 mm, the opening should be at least 7.5 mm long. With these dimensions, the retaining wing can be made sufficiently large and there is enough space for the mouth region of the slot.
  • the angle formed by the slot with the running direction of the roving is between 20 ° and 30 °, the limits being included.
  • the slot fits optimally into the overall arrangement and supports the best threading and prevents the unthreading.
  • FIGS. 1 and 2 illustrate the basic structure and operation of a roving machine.
  • the stretch band is guided by a drafting device, of which only the output rollers 1 are shown in the figures.
  • the stretched roving 2 is inserted into the flyer wings 3 and guided by one of the wings to its lower end.
  • On the wing a presser finger 8 is attached.
  • the roving 2 is wound around the press finger arm 6 and guided through the opening 11 in the press finger bed 7.
  • the flyer bobbin 4 is arranged on a bobbin carriage 9.
  • the bobbin carriage 9 can be moved up and down.
  • the roving 2 receives by turning the wings 3 and the flyer bobbin 4, the required rotation and is stored by means of the guide by the presser fingers 8 on the coil 4.
  • the coil 4 is moved by means of the bobbin carriage 9 meanwhile up and down.
  • a roving reserve 5a, 5b is provided with less rotation.
  • the roving reserve 5a was deposited at the upper end of the bobbin.
  • the roving 2 tears at the point of low rotation and the desired separation has taken place.
  • the roving reserve 5b was placed at the lower end of the flyer bobbin 4. To separate the roving, the bobbin carriage 9 with the bobbin 4 must be lowered in the direction of the arrow 10b.
  • the Fig. 3 shows a press finger 8 according to the invention of the Pressfingerarm 6 only the Pressfinger plank 7 facing the end is shown.
  • the Pressfingerpritsche 7 has, as is well known, on the input side of the roving a groove 14 and on the other side of the opening 11 a funnel-shaped indentation 13.
  • the roving 2 lies on the the coil 4 side facing away from the groove 14 and on the coil 4 side facing in the funnel-shaped impression.
  • the press finger bed has a curved edge 17, 18 at the top and bottom, respectively.
  • the direction of the roving 2 through the opening 11 is through the dashed line 16 indicated.
  • the opening 11 in the running direction of the roving has a greater extent than transversely to this direction.
  • the slot 12 for introducing the roving into the opening 11 opens obliquely into the opening 11.
  • the angle which the slot 12 forms with the running direction 16 of the rug 2 is in the FIGS. 5 and 6 denoted by W.
  • the slot 12 and the elongated opening 11 are arranged so that over the prior art, an enlarged retaining wing 15 is formed. This retaining wing 15 is located between the slot 12 and the opening eleventh
  • FIGS. 5 and 6 show the inventive design of slot 12 and opening 11 in the FIGS. 5 and 6 shown in more detail.
  • the Fig. 4 shows a circular opening 11a.
  • the circle has a longitudinal extent L a in the running direction 16a of the roving.
  • the extent transverse to the running direction of the roving yarn is denoted by Q a .
  • the longitudinal extent L a and the transverse extent Q a are of course the same.
  • Due to the circular shape of the muzzle rich 19a of the slot 12a begins relatively close to the Pressfingerarm 6 facing the end of the longitudinal extent L a .
  • the retaining wing 15a formed by the slot 12a and the circular opening 11a is relatively short so that, under tensile load, the roving 2a may slip past the rear wing 15a and thread through the slot 15a.
  • the Fig. 5 shows an opening 11b, which is formed as a slot.
  • the longitudinal extent L b of the opening 11 b that is, the extension in the direction of the running direction 16 b of the roving 2b is limited by semicircles, the transverse dimension Q b by parallel longitudinal sides.
  • the radius of the semicircles is then just half of the transverse extent Q b , ie Q b / 2.
  • the distance A b of the mouth region 19 b of the slot 12 b from the end of the longitudinal extent L b , which faces the Pressfingerarm be greater than half the transverse dimension Q b / 2.
  • training as a slot means that the mouth area 19b is in the range of parallel longitudinal sides.
  • the retaining wing 15b, which is formed by the slot 12b and the elongated hole 11b, is opposite to an arrangement as shown in FIG Fig. 4 is shown, significantly enlarged.
  • the roving 2b can not unthread so.
  • the Fig. 6 shows an alternative embodiment of the present invention.
  • the opening 11c, into which the slot 12c opens, is formed as an ellipse.
  • the ellipse 11c has an extension L c in the running direction 16c of the roving yarn and an extension Q c transversely to the running direction 16c.
  • the distance A c of the mouth portion 19 c of the slot 12 c from the end of the longitudinal extent L c , which faces the Pressfingerarm, is greater than half the transverse dimension Q c / 2 in the direction 16c of the roving 2c.
  • the retaining wing 15c is enlarged compared to the prior art.
  • the Fig. 7 shows a further alternative embodiment of the present invention.
  • the opening 11d, into which the slot 12d opens, is pear-shaped.
  • the pear-shaped opening 11d has an extension L d in the direction 16d of the roving and an extension Q d transverse to the direction 16d.
  • the distance A d of the mouth portion 19 d of the slot 12 d from the end of the longitudinal extent L d , which faces the Pressfingerarm, is greater than half the transverse dimension Q d / 2 in the direction 16 d of the roving 2 d .
  • the retaining wing 15d is enlarged compared to the prior art.
  • the slot 12b, 12c, 12d meets the opening 11b, 11c, 11d from above.
  • the slot can also hit from below on the opening.

Landscapes

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

Claims (7)

  1. Doigt de pression(8) pour bancs à broches, composé d'un bras de doigt de pression (6) et d'une plate-forme pour doigt de pression (7) et formé de sorte de guider une mèche pendant la formation d'une bobine (4) sur un banc à broches, la plate-forme pour doigt de pression présentant (7) une ouverture (11, 11b, 11c, 11d) pour le déroulement d'une mèche (2, 2b, 2c, 2d) qui possède, dans le sens de déplacement (16, 16b, 16c, 16d) de la mèche (2, 2b, 2c, 2d) par l'ouverture (11, 11b, 11c), une extension longitudinale (Lb, Lc, Ld), et transversalement au sens de déplacement (16, 16b, 16c, 16d) de la mèche (2, 2b, 2c, 2d), une extension transversale (Qb, Qc, Qd), et qui présente
    une fente (12, 12b, 12c, 12d) débouchant dans l'ouverture (11, 11b, 11c, 11d) en vue de l'introduction d'une mèche (2, 2b, 2c, 2d) dans l'ouverture (11, 11b, 11c, 11d) formant, avec le sens de déplacement (16, 16b, 16c, 16d) de la mèche (2, 2b, 2c), un angle (W) de moins de 45°,
    caractérisé en ce que
    l'extension longitudinale (Lb, Lc, Ld) de l'ouverture (11, 11b, 11c, 11d) est plus grande que l'extension transversale (Qb, Qc, Qd) et
    en ce que la distance (Ab, Ac, Ad) de l'embouchure (19b, 19c) de la fente (12, 12b, 12c, 12d) de l'extrémité de l'extension longitudinale (Lb, Lc, Ld), qui est appliquée sur le bras du doigt de pression (6), dans le sens de déplacement (16, 16b, 16c) de la mèche (2, 2b, 2c), est plus grande que la moitié de l'extension longitudinale (Qb/2, Qc/2, Qd/2).
  2. Doigt de pression suivant la revendication 1, caractérisé en ce que l'ouverture (11b) est formée comme un trou longitudinal, l'extension longitudinale (Lb) étant limitée par des demi-cercles et l'extension transversale (Qb) par des côtés longitudinaux parallèles les uns aux autres.
  3. Droit de pression (8) suivant la revendication 1, caractérisé en ce que l'ouverture (11c) présente la forme d'une ellipse.
  4. Droit de pression (8) suivant la revendication 1, caractérisé en ce que l'ouverture (11d) est en forme de poire.
  5. Droit de pression (8) suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'extension longitudinale (Lb, Lc, Ld) est agrandie d'au moins 50 % par rapport à l'extension transversale (Qb, Qc, Qd).
  6. Droit de pression (8) suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'angle (W) formant la fente (12, 12b, 12c, 12d) avec le sens de déplacement (16, 16b, 16c, 16d) de la mèche (2, 2b, 2c, 2d) s'élève à 30° ou moins.
  7. Droit de pression (8) caractérisé en ce que l'angle formant la fente (12, 12b, 12c, 12d) avec le sens de déplacement (16, 16b, 16c, 16d) de la mèche (2, 2b, 2c, 2d) s'élève à 20° ou plus.
EP12006279.9A 2011-10-13 2012-09-06 Doigt de pression pour un banc à broches Active EP2581476B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011115850.6A DE102011115850B4 (de) 2011-10-13 2011-10-13 Pressfinger für eine Vorspinnmaschine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102011115850 Previously-Filed-Application 2011-10-13

Publications (3)

Publication Number Publication Date
EP2581476A2 EP2581476A2 (fr) 2013-04-17
EP2581476A3 EP2581476A3 (fr) 2015-04-08
EP2581476B1 true EP2581476B1 (fr) 2018-06-06

Family

ID=46924205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006279.9A Active EP2581476B1 (fr) 2011-10-13 2012-09-06 Doigt de pression pour un banc à broches

Country Status (4)

Country Link
EP (1) EP2581476B1 (fr)
CN (1) CN103046180B (fr)
DE (1) DE102011115850B4 (fr)
ES (1) ES2675103T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020169426A (ja) * 2019-04-05 2020-10-15 株式会社豊田自動織機 粗紡機

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046376A (en) 1935-10-29 1936-07-07 Philip A Gwaltney Flyer
GB669376A (en) * 1949-07-21 1952-04-02 William George Reynolds Improved presser feet for textile flyers
DE8016435U1 (de) * 1980-06-21 1984-11-08 C. Eugen Maier Metallverarbeitung Gmbh, 7012 Fellbach Pressfinger fuer einen spinn- od. flyerfluegel
DE3023241C2 (de) 1980-06-21 1983-12-08 C. Eugen Maier Metallverarbeitung Gmbh, 7012 Fellbach Preßfinger für einen Flyerflügel
DD296714A5 (de) * 1990-07-23 1991-12-12 Spindelfabrik Neudorf Gmbh,De Spinnfluegel fuer eine vorspinnmaschine
EP0686713B1 (fr) 1994-06-10 1999-04-14 Holz, Ernst Doigt presseur
DE19727799C1 (de) * 1997-06-30 1998-08-06 Ernst Holz Textilmaschinen Zub Flyerflügel
CN2327704Y (zh) * 1998-03-23 1999-07-07 戴静益 导纱圈式粗纱机绽翼压掌
DE602004012878T2 (de) 2004-12-01 2009-06-04 Electro-Jet, S.A., Gurb Vorspinnmaschine zur Herstellung und Lieferung von Vorgarnspulen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102011115850A1 (de) 2013-04-18
ES2675103T3 (es) 2018-07-06
DE102011115850B4 (de) 2019-01-10
EP2581476A3 (fr) 2015-04-08
CN103046180B (zh) 2016-08-03
CN103046180A (zh) 2013-04-17
EP2581476A2 (fr) 2013-04-17

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