EP3754062A1 - Dispositif d'effilochage d'un ruban de fibres pour un dispositif de filage à bout libre et auge d'alimentation pour le dispositif d'effilochage d'un ruban de fibres - Google Patents

Dispositif d'effilochage d'un ruban de fibres pour un dispositif de filage à bout libre et auge d'alimentation pour le dispositif d'effilochage d'un ruban de fibres Download PDF

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Publication number
EP3754062A1
EP3754062A1 EP20180129.7A EP20180129A EP3754062A1 EP 3754062 A1 EP3754062 A1 EP 3754062A1 EP 20180129 A EP20180129 A EP 20180129A EP 3754062 A1 EP3754062 A1 EP 3754062A1
Authority
EP
European Patent Office
Prior art keywords
sliver
support surface
distance
circular cylinder
opening roller
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
EP20180129.7A
Other languages
German (de)
English (en)
Other versions
EP3754062B1 (fr
Inventor
Andreas Jakobinski
Lothar Winzen
Florian Keuter
Jens Geerligs
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 Spinning Solutions GmbH and Co KG
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 Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP3754062A1 publication Critical patent/EP3754062A1/fr
Application granted granted Critical
Publication of EP3754062B1 publication Critical patent/EP3754062B1/fr
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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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • 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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers

Definitions

  • the present invention relates to a sliver opening device for an open-end spinning device comprising a feed trough, a sliver intake cylinder and an opening roller.
  • the sliver intake cylinder is designed in connection with a clamping surface of the feed trough for the transport of a feed sliver in the direction of the opening roller.
  • the feed trough has a support surface for fixing a tuft that has been combed out by the opening roller.
  • the feed trough also has a transition area with a convex curvature between the clamping surface and the support surface.
  • the invention also relates to the feed trough with the clamping surface, the support surface for fixing the tuft and the convex transition area between the clamping surface and the support surface.
  • the DE 35 01 842 C2 describes, for example, a sliver opening device in which a cylindrical, preferably corrugated fiber sliver intake cylinder with an associated feed trough forms a clamping area for the feed sliver.
  • the slowly rotating sliver intake cylinder feeds the feed sliver to a downstream opening roller at a constant transport speed.
  • the feed sliver which is preferably temporarily stored in spinning cans, first passes through a compactor on its way to the opening roller, which not only compresses the feed sliver but also gives it a certain profile that is favorable for collection.
  • the compressed feed fiber sliver then runs into the clamping area formed by the sliver intake cylinder and the feed trough, which is usually wider than the feed fiber sliver. In this way it is ensured that the original fiber band is also securely clamped in the edge areas.
  • a tuft support is arranged after the clamping area. However, no more precise information is given about the geometry of the beard support.
  • the DE 103 51 365 A1 discloses a feed trough for a sliver opening device of an open-end spinning device, with a concave clamping area which is effective in connection with a sliver intake cylinder for conveying a fiber sliver, lateral guide walls for guiding the fiber sliver and a concavely arched support surface for fixing a sliver combing roller the feed trough can be pivoted about a pivot axis parallel to the axis of rotation of the opening roller.
  • the feed trough is designed and arranged in its working position so that there is a gap width between the support surface and the adjacent tips of the opening roller set at a combing point of between 0.7 and 1.5 mm, which extends over an angular range in the direction of rotation of the opening roller of at least 30 ° steadily reduced to a gap width of less than 0.5 millimeters. It is further explained that in addition to the continuous reduction of the gap between the support surface and the tips of the opening roller set, it is above all the transition area that is as close as possible to the opening roller that is important. This is intended to counteract a build-up of the tuft, especially when producing fancy yarn.
  • a sliver opening device for an open-end spinning device which comprises a feed trough, a sliver intake cylinder and an opening roller with an opening roller set, the tips of which lie on a circular cylinder surface.
  • the sliver intake cylinder is designed in connection with a clamping surface of the feed trough for the transport of a feed sliver in the direction of the opening roller.
  • the feed trough has a support surface for fixing a tuft that has been combed out by the opening roller.
  • the distance between the support surface and the circular cylinder surface tapers in the fiber transport direction down to a minimal distance.
  • the feed trough has a transition area with a convex curvature between the clamping surface and the support surface.
  • the support surface viewed in the fiber transport direction, has a distance between 4 and 8 millimeters at its beginning from the circular cylinder surface and the minimum distance between the support surface and the circular cylinder surface is less than 1.5 millimeters.
  • the sliver opening device according to the invention especially yarns can be made synthetic fibers, in particular made of polyester, can be produced with improved yarn values.
  • the yarns produced with the sliver opening device according to the invention have above all a higher yarn strength but also a better uniformity than yarns produced with known sliver opening devices.
  • the support surface begins directly after the convex transition area.
  • the beginning of the support surface represents the combing point for the fibers.
  • Combing is a continuous process.
  • the combing-in point is the point at which the combing-in begins to increase. This point is determined less by the distance to the opening roller than more by the deflection in the circumferential direction of the opening roller. This deflection is largely completed after passing through the convex transition area.
  • the yarn values can be further improved if the fibers are given more space than is known in the prior art, even in the region of the minimum distance between the support surface and the tips of the opening roller clothing.
  • the support surface is usually dimensioned in such a way that the support surface is brought as close as possible to the tips of the opening roller set. At the distance it is only necessary to ensure that contact between the tips and the support surface is reliably prevented. In the case of such food troughs, the minimum distance is usually between 0.2 and 0.5 millimeters.
  • the minimum distance between the support surface and the circular cylinder surface greater than 0.5 millimeters, preferably greater than 0.6 millimeters.
  • the tapering of the distance between the support surface and the circular cylinder surface extends from the beginning of the support surface to the minimum distance over an angular range in the direction of rotation of the opening roller of less than 30 °. It is entirely possible that the support surface is in the direction of rotation of the opening roller after reaching the minimum distance continues at a constant distance from the circular cylinder surface. This makes it possible, for example, to adjust the size of a dirt outlet opening following the beard support.
  • the support surface can be designed as a concave surface from its beginning to its end. However, in order to realize the wide inlet area, it is advantageous if the support surface is designed as a flat surface at its beginning, preferably from its beginning until the minimum distance from the circular cylinder surface is reached. A concave surface can then adjoin the flat surface. Depending on the design, the concave surface can be at a constant distance from the circular cylinder surface or continue with a tapering distance.
  • the planar surface merges tangentially into the concave surface. This avoids an abrupt change in the distance between the support surface and the opening roller, which has a positive effect on the yarn quality.
  • the transition area between the clamping surface and the support surface it is known in the transition area between the clamping surface and the support surface to arrange lateral guide walls for guiding the feed fiber band, if necessary. This is to prevent the feed sliver from migrating during the combing out.
  • the distance between the two lateral guide walls is smaller than the axial extent of the opening roller. That is, the lateral guide walls are opposite to the peripheral surface of the opening roller.
  • the feed trough has lateral guide walls in the area of the support surface for guiding the feed sliver, which extend from the beginning to the end of the support surface.
  • This design is particularly useful in conjunction with an enlarged minimum distance between the support surface and the circular cylinder surface of the opening roller set.
  • the guide walls can then be brought as close as possible to the tips of the opening roller set. An increased distance between the support surface and the tips of the opening roller set can be achieved between the guide walls.
  • the present invention also relates a feed trough for a sliver opening device, which has a clamping surface which is formed in connection with a sliver intake cylinder for transporting a feed sliver in the direction of an opening roller with an opening roller set, the tips of which lie on a circular cylinder surface, a support surface for fixing a fiber beard processed by the opening roller by combing whose distance from the circular cylinder surface tapers to a minimum distance in the fiber transport direction, and comprises a transition area with a convex curvature between the clamping surface and the support surface.
  • the support surface viewed in the fiber transport direction, has a distance between 4 and 8 millimeters at its start from the circular cylinder surface and the minimum distance between the support surface and the circular cylinder surface is less than 1.5 millimeters.
  • the Fig. 1 shows an opening roller housing 1 of a sliver opening device for an open-end spinning device.
  • an opening roller 2 is rotatably mounted about an axis of rotation 22.
  • the opening roller 2 has on its outer circumference what is known as an opening roller set 3 for combing out a feed fiber sliver 4.
  • the opening roller set 3 comprises teeth, the tips of which lie on a circular cylindrical surface 13 which delimits the opening roller 2.
  • the opening roller 2 rotates in the direction of arrow 5 during the spinning operation.
  • a sliver intake cylinder 7 rotatable in the direction of arrow 6 is also mounted. This corresponds to a clamping surface 10 of a food tray 11, which is pivotably mounted by means of a food tray holder 8.
  • the original sliver 4 which is usually in a not shown Spinning can is stored, passed via a compressor 9 in the direction of arrow 15 into a clamping zone which is formed by the feed trough 11 and the sliver intake cylinder 7.
  • the feed trough holder 8 with the feed trough 11 is mounted so as to be movable to a limited extent about a pivot axis 16 and is acted upon by a spring element (not shown) in the direction of arrow 17 opposite to this direction of movement.
  • the feed trough 11 presses the feed sliver 4 against the sliver intake cylinder 7 rotating in the direction of arrow 6.
  • the sliver intake cylinder 7 conveys the feed sliver 4 into the area of the opening roller 2, the opening roller set 3 of which combs the feed fiber sliver 4 into individual fibers, which then, as is known, on a Dirt outlet opening 24 pass and be fed to a spinning rotor via a fiber guide channel 25 (see Fig. Fig. 2 ).
  • Fig. 3 the feed trough 11 and its arrangement in relation to the sliver intake cylinder 7 and to the opening roller 2 is shown in more detail.
  • the feed trough 11 is detachably connected to the feed trough holder 8, such as from FIG DE 10 2017 118 392 A1 is known.
  • the feeding trough 11 and the feeding trough holder 8 can also be formed in one piece or the feeding trough 11 can consist of several parts which are connected to one another by means of the feeding trough holder 8.
  • the sliver intake cylinder 7 transports the feed sliver 4 in connection with the clamping surface 10 of the feed trough 11 in the direction of the opening roller 2. Following the clamping surface 10 of the feed trough 11, the feed sliver 4 passes through a transition area 20 of the feed trough 11 with a convex, i.e. outwardly curved, curvature . At the end of the transition region 20, that is to say after the end of the convex curvature, a support surface 14 begins for fixing the tuft processed by the opening roller 2. The combing point lies between the transition region 20 and the support surface 14. In the exemplary embodiment shown, the support surface 14 comprises two partial surfaces 14a and 14b.
  • the first surface 14a seen in the fiber transport direction is planar or planar.
  • the surface 14a is at a distance from the circular cylinder surface 13 on which the tips 12 of the opening roller set 3 lie, which is provided with the reference numeral 18.
  • the distance is the perpendicular from the support surface 14 to the circular cylinder surface 13 on which the tips 12 of the opening roller set 3 lie. This distance tapers in the fiber transport direction down to a minimal distance.
  • the distance between the planar partial surface 14a tapers to the minimum distance 19.
  • the following partial surface 14b is concave, that is to say curved inward.
  • the surface 14b is also designed as a circular cylinder surface, the center axis corresponding to the axis of rotation 22 of the opening roller 2. That is, the distance of the surface 14b from the circular cylinder surface 13 on which the tips 12 of the opening roller set 3 lie, corresponds to the minimum distance 19 according to the invention, the distance 18 is between 4 and 8 millimeters and the distance 19 is less than 1, 5 millimeters. In the illustrated embodiment, the distance 19 is also greater than 0.6 millimeters.
  • the tapering of the distance between the support surface 14 or, more precisely, the partial surface 14a from the circular cylinder surface 13 from the beginning of the support surface 14 to the minimum distance 19 extends over an angular range in the direction of rotation of the opening roller 2, which is identified by the reference number 21.
  • This angular range 21 is smaller than 30 ° in the illustrated embodiment.
  • the feed trough 11 shown has in the area of the support surface 14 also lateral guide walls 23 for guiding the feed sliver 4, which extend from the beginning to the end of the support surface 14, that is, over both partial surfaces 14a and 14b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20180129.7A 2019-06-19 2020-06-16 Dispositif d'effilochage d'un ruban de fibres pour un dispositif de filage à bout libre Active EP3754062B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019116584.9A DE102019116584A1 (de) 2019-06-19 2019-06-19 Faserbandauflöseeinrichtung für eine Offenend-Spinnvorrichtung und Speisemulde für die Faserbandauflöseeinrichtung

Publications (2)

Publication Number Publication Date
EP3754062A1 true EP3754062A1 (fr) 2020-12-23
EP3754062B1 EP3754062B1 (fr) 2022-01-26

Family

ID=71103232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20180129.7A Active EP3754062B1 (fr) 2019-06-19 2020-06-16 Dispositif d'effilochage d'un ruban de fibres pour un dispositif de filage à bout libre

Country Status (5)

Country Link
US (1) US11384455B2 (fr)
EP (1) EP3754062B1 (fr)
CN (1) CN112111814B (fr)
BR (1) BR102020012202A2 (fr)
DE (1) DE102019116584A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402811A (en) * 1972-09-18 1975-08-13 Vyzk Ustav Bavlnarsky Method vyzkumny ustav bavlnarsky method of feeding a fibrous sliver to a combing-out cylinder of an open-end spinning unit and fibre separating device for use in an open-end spinning unit
GB1449922A (en) * 1973-01-16 1976-09-15 Vyzk Ustav Bavlnarsky Separating fibres for open-end spinning
DE3501842C2 (de) 1985-01-22 1997-08-21 Schlafhorst & Co W Faserbandauflöseaggregat für eine OE-Spinnmaschine
DE10351365A1 (de) 2003-10-16 2005-06-02 Saurer Gmbh & Co. Kg Speisemulde für eine Faserbandauflöseeinrichtung einer Offenend-Spinnvorrichtung
DE102017118392A1 (de) 2017-08-11 2019-02-14 Saurer Spinning Solutions Gmbh & Co. Kg Speisetischvorrichtung für eine Faserbandauflösevorrichtung einer Offenend-Spinnvorrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH578628A5 (fr) * 1973-01-16 1976-08-13 Vyzk Ustav Bavlnarsky
US4024699A (en) * 1974-10-11 1977-05-24 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Sliver resolving apparatus for open-end spinning machines
DE3374423D1 (en) * 1982-11-05 1987-12-17 Rieter Ag Maschf Cleaning machine for fibre material
DE4101315C2 (de) * 1991-01-18 1999-04-29 Stahlecker Fritz Zuführ- und Auflöseeinrichtung für eine OE-Spinnvorrichtung
DE4227885C2 (de) * 1992-08-22 1994-11-17 Rieter Ingolstadt Spinnerei Vorrichtung zum pneumatischen Zuführen von Fasern zu der Fasersammelfläche eines Offenend-Spinnelementes
DE4441254A1 (de) * 1994-11-19 1996-05-23 Truetzschler Gmbh & Co Kg Vorrichtung zum Öffnen und Reinigen von in Flockenform befindlichem Fasergut, z. B. Baumwolle, synthetischem Fasergut u. dgl.
DE10132912A1 (de) * 2001-06-28 2003-01-16 Stahlecker Gmbh Wilhelm Spinnvorrichtung
DE102011116786A1 (de) * 2011-10-22 2013-04-25 Oerlikon Textile Gmbh & Co. Kg Speisemulde für eine Faserbandauflöseeinrichtung einer Offenend-Spinnvorrichtung
DE102014003329A1 (de) * 2014-03-08 2015-09-10 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Betreiben einer Offenend-Rotorspinnmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402811A (en) * 1972-09-18 1975-08-13 Vyzk Ustav Bavlnarsky Method vyzkumny ustav bavlnarsky method of feeding a fibrous sliver to a combing-out cylinder of an open-end spinning unit and fibre separating device for use in an open-end spinning unit
GB1449922A (en) * 1973-01-16 1976-09-15 Vyzk Ustav Bavlnarsky Separating fibres for open-end spinning
DE3501842C2 (de) 1985-01-22 1997-08-21 Schlafhorst & Co W Faserbandauflöseaggregat für eine OE-Spinnmaschine
DE10351365A1 (de) 2003-10-16 2005-06-02 Saurer Gmbh & Co. Kg Speisemulde für eine Faserbandauflöseeinrichtung einer Offenend-Spinnvorrichtung
DE102017118392A1 (de) 2017-08-11 2019-02-14 Saurer Spinning Solutions Gmbh & Co. Kg Speisetischvorrichtung für eine Faserbandauflösevorrichtung einer Offenend-Spinnvorrichtung

Also Published As

Publication number Publication date
US11384455B2 (en) 2022-07-12
BR102020012202A2 (pt) 2020-12-29
US20200399791A1 (en) 2020-12-24
CN112111814A (zh) 2020-12-22
CN112111814B (zh) 2022-08-30
EP3754062B1 (fr) 2022-01-26
DE102019116584A1 (de) 2020-12-24

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