EP0370232A2 - Disposition d'un entonnoir à la sortie d'une machine de cardage - Google Patents

Disposition d'un entonnoir à la sortie d'une machine de cardage Download PDF

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Publication number
EP0370232A2
EP0370232A2 EP89119359A EP89119359A EP0370232A2 EP 0370232 A2 EP0370232 A2 EP 0370232A2 EP 89119359 A EP89119359 A EP 89119359A EP 89119359 A EP89119359 A EP 89119359A EP 0370232 A2 EP0370232 A2 EP 0370232A2
Authority
EP
European Patent Office
Prior art keywords
funnel
arrangement according
squeezing device
air
former
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Withdrawn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
EP89119359A
Other languages
German (de)
English (en)
Other versions
EP0370232A3 (fr
Inventor
Daniel Erni
Paul Staeheli
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 EP0370232A2 publication Critical patent/EP0370232A2/fr
Publication of EP0370232A3 publication Critical patent/EP0370232A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • 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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the present invention relates to a funnel arrangement at the exit of a card or draw frame for bringing together a fiber sliver with a funnel connected upstream of a pair of calender rolls, in particular as a pair of stepped rolls, which is provided at its tapered outlet end with a nozzle opening which preferably has an approximately rectangular cross section.
  • Such a funnel arrangement is usually used at the exit of a card to bring together or press the sliver emitted by the card, which is a relatively loose, air-enclosing structure, while at the same time pressing out the enclosed air, so that the pre-compressed sliver fits the clamping gap of the subsequent one Calender roller pair can be supplied.
  • This pair of calender rolls is usually a pair of stepped rolls which detects deviations in the strip number and whose output signal can be used to regulate the card.
  • the object of the present invention is to counteract the balloon effect without the introduction of the sliver being made considerably more difficult by the nozzle opening of the funnel, and even to facilitate the introduction of the sliver if possible.
  • the present invention provides an improvement of the funnel arrangement mentioned at the outset, characterized by a pre-funnel and an air squeezing device connected downstream of the funnel, which upstream of the first-mentioned funnel, which continues the tapering of the funnel running in the direction of movement of the fiber sliver and has lateral openings, and by the housing surrounding the air squeezing device and forming an air discharge chamber, which extends at least essentially from the pre-funnel to the former funnel.
  • the pre-funnel takes on a guiding function and supports the movement of the sliver into the air squeezing device.
  • the tapered shape of the air squeeze device results in an increasing compression of the fiber sliver and a squeezing out of the air enclosed therein, which can escape into the housing from the side openings of the air squeeze device.
  • the sliver When leaving the air squeezing device, the sliver has a reduced cross-section compared to the slivers that normally run into the funnel. Thus, both the introduction of the sliver into the former hopper and the escape of the sliver is still trapped air much easier.
  • the housing By connecting to a vacuum source, for which purpose the housing preferably has an air outlet, the air pressed out can be easily removed.
  • the suction power of the suction source or the negative pressure must not be so high that fibers are pulled out of the relatively loose fiber sliver.
  • the unit consisting of pre-funnel, air squeezing device and funnel can preferably be folded away, in particular folded down and at least easily removed in front of the pair of calender rolls. This will make it easier to clean the unit or the area in front of the pair of calender rolls.
  • the air squeezing device consists of a wire spiral having an essentially conical outer shape, at least some of the wire windings being spaced apart from one another.
  • the lateral openings of the air squeezing device are formed by the distances between the said wire windings.
  • the air squeezing device has the shape of a conical cage.
  • the cage preferably consists of rods directed in the direction of movement of the belt, at least some of the adjacent bars are spaced from each other. Generally, the bars are now spaced at regular intervals to form the cage without an end ring at the exit end of the cage.
  • the cage bars can have a round, oval or rectangular cross section, they are preferably made of spring steel.
  • the rods can easily be fastened in a ring at the inlet end of the air squeezing device, this ring being able to be advantageously formed by the pre-funnel itself.
  • the exact type of fastening can be chosen arbitrarily, for example threads can be attached to the end of the rods, or the rods can be fastened in the ring by a crimp connection or by welding, brazing, soldering or gluing.
  • This design also enables a special design of the funnel arrangement, which is characterized in that the pre-funnel and the cage of the air squeezing device, and preferably also the housing and optionally also the funnel, are subdivided into a longitudinal plane containing the direction of movement of the fiber sliver.
  • one half of the divided funnel arrangement can be articulated on the other half.
  • One half of the funnel arrangement can thus be removed or folded away in order to enable the introduction of the sliver or the removal of any blockages that may occur.
  • the air squeezing device can also have a cross-sectional shape that is at least substantially oval, elliptical or approximately rectangular, at least at their exit end facing the former funnel.
  • the cross-sectional shape of the fiber sliver into the nozzle of the former funnel can already be predetermined by the air squeezing device, which has a favorable influence on the introduction of the fiber sliver into the nozzle opening of the former funnel.
  • the former funnel in comparison to conventional funnels, but with approximately the same taper, for example such that the former funnel has an axial length from the inlet end to the inlet end of the nozzle opening of less than 3 cm .
  • the former funnel can be converted into a "residual funnel", the smaller axial length of which favors the threading of the sliver.
  • the former hopper is formed by the pair of calender rolls themselves.
  • the outlet end of the air squeezing device is located before or immediately before the inlet end of the former funnel.
  • this removability is restricted to one half of the pre-funnel, the air squeezing device and possibly the housing, but the introduction of the sliver into the former funnel is nevertheless positively influenced by the shortened design thereof.
  • a particularly practical embodiment of the funnel arrangement according to the invention is characterized in that the inner surface of the former funnel has a cone angle of 60 to 90 °, preferably approximately 75 °, and that the cone angle of the pre-funnel and the air squeezing device is in the range between 30 and 60 ° , and is preferably 45 °.
  • Fig. 1 shows a funnel arrangement 10, which is arranged in front of a pair of stepped rollers 11, consisting of the two stepped rollers 12 and 13.
  • the funnel arrangement 10 consists of a pre-funnel 14, an air squeezing device 15 and a further funnel 16 with a nozzle opening 17 which projects into the nip area of the pair of stepped rollers 11.
  • the pre-funnel 14 has an outer cylindrical jacket part 18 which is fastened to the flange part 21 of the further funnel 16 by means of three clamping screws 19 (only one of which is shown).
  • the cylindrical jacket part 18 thus surrounds the air squeeze device 15 and forms a chamber 22 which can be connected to a vacuum source by means of an air connection 23.
  • the air squeezing device 15 is designed as a wire funnel, which continues the conical shape of the pre-funnel 14.
  • the wire funnel is designed as a conical wire spiral made of round wire, for example spring steel, the individual windings 24 of the wire spiral having distances 25 from one another which form lateral openings.
  • the winding 26 of the wire spiral with the largest diameter is seated in a correspondingly shaped annular groove 27 in the pre-funnel and is held there due to the spring properties of the wire spiral.
  • the resilient properties of the wire spiral also facilitate the insertion of this turn 26 into the groove 27.
  • the diameter of the turn 26 can first be reduced by applying appropriate forces and brought into the area of the groove 27.
  • the winding expands again until it is held in the groove 27 in a form-fitting and frictional manner.
  • the groove can be designed in the form of a thread, so that the wire spiral or the turn 26 can be screwed into this thread.
  • the entire funnel arrangement consisting of pre-funnel, air squeezing device 15 and further funnel 16, can be folded away in the direction of arrow 29 in order to enable the area in front of the pair of stepped rollers 11 to be cleaned.
  • the nozzle opening 17 has a rectangular cross section, the longitudinal axis of which is perpendicular in FIG. 1.
  • the sliver emerging from this opening is then flattened in the horizontal direction by the pair of step rollers 11, the band passing through a rectangular opening between the step rollers with a horizontal longitudinal axis.
  • the lower step roller 12 is arranged rotatably about a fixed axis 31 when the upper step roller 13, which is arranged to rotate about the axis 32, is pressed resiliently in the direction of arrow 33 against the lower step roller 12.
  • the position of the step roller 13 changes under the pretension in the direction of arrow 33, the respective position being a measure of the sliver number.
  • This position can be determined and used to control the card.
  • the end of the sliver coming from the carding machine is twisted between the hands of an operator to a tip and pushed through the inlet end 34 of the pre-hopper until the tip looks through the rectangular opening 17 and from the step rollers, of which the lower roller 12 is driven, is taken.
  • the card can then be switched to operating speed.
  • the air contained in the sliver becomes during the passage the funnel arrangement is squeezed out of the fiber sliver by the air squeezing device and this excess air is then removed from the chamber 22 via the connection 23.
  • the pre-funnel has a guiding function and the wire funnel has a squeezing and air discharge function.
  • the further funnel 16 brings the belt together.
  • the cylinder part 18 of the pre-funnel has a relatively coarse thread at its end facing the funnel 16 (see FIG. 1A), which cooperates with a corresponding thread on the funnel 16, so that by twisting the pre-funnel the cooperation leads to a change in the axial distance between the two threads.
  • FIG. 2 Another embodiment is shown in FIG. 2.
  • the air squeezing device 15 in this embodiment is formed by individual rods 35 which are provided at one end with threads 37 which are screwed into corresponding bores of the pre-funnel provided with internal threads 38.
  • distances 36 are provided between the individual rods 35, which form lateral openings of the air squeezing device.
  • This design has the particular advantage that the funnel arrangement can be divided into two halves along the plane of symmetry 41, the lower half 42 being fixedly attached to the card frame, for example, the upper half 43 being removable or foldable is not. By folding one half of the funnel away, the fiber sliver can be inserted particularly conveniently into the funnel arrangement.
  • Fig. 2 also shows that the funnel 16 can be shortened in construction, which also favors the introduction of the sliver into it.
  • This shortened design could also be used in the embodiment according to FIG. 1.
  • the ends of the rods 35 facing the funnel 16 are arranged such that they stop shortly before the funnel 16. These ends of the rods can be bent slightly outwards, as shown in Fig. 2 at 44, so that the sliver runs smoothly. It can also be seen that the rods 35 have a slightly tapered shape so that there is still sufficient space 36 between the rods in the end facing the funnel 16.
  • Fig. 3 shows that the rods 35 have a circular cross section and form a circular cone.
  • FIG. 4 shows a further development of the air squeezing device of FIG. 3, in which the individual rods 35 have an oval cross section and thus side by side are arranged so that there is an overall elliptical cross section for the air squeeze device.
  • This cross section represents an adaptation to the desired rectangular cross section of the sliver, which must then be passed through the rectangular opening 17 of the funnel 16.
  • FIG. 5 shows a further possible cross-sectional shape for the rods of the air squeezing device, namely here a rectangular cross-sectional shape, the edges preferably being slightly rounded in order to prevent fibers from getting caught.
  • FIG. 6 shows a side view of the pair of stepped rollers 12, in which they have a special shape with rounded shoulder regions 55, 56, so that these shoulders themselves form a kind of funnel which can take over the function of the funnel 16, so that this funnel 16 is now unnecessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19890119359 1988-11-22 1989-10-18 Disposition d'un entonnoir à la sortie d'une machine de cardage Withdrawn EP0370232A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839413A DE3839413A1 (de) 1988-11-22 1988-11-22 Trichteranordnung am ausgang einer karde
DE3839413 1988-11-22

Publications (2)

Publication Number Publication Date
EP0370232A2 true EP0370232A2 (fr) 1990-05-30
EP0370232A3 EP0370232A3 (fr) 1991-12-27

Family

ID=6367636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119359 Withdrawn EP0370232A3 (fr) 1988-11-22 1989-10-18 Disposition d'un entonnoir à la sortie d'une machine de cardage

Country Status (4)

Country Link
US (1) US5016322A (fr)
EP (1) EP0370232A3 (fr)
JP (1) JPH02182920A (fr)
DE (1) DE3839413A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406679A (en) * 1992-12-04 1995-04-18 Trutzschler Gmbh & Co. Kg Web guiding and supporting device at the outlet of a carding machine
EP0704562A1 (fr) 1994-08-30 1996-04-03 Maschinenfabrik Rieter Ag Guidage glissant à la sortie d'une courroie transversale
EP1191135A2 (fr) * 1997-03-08 2002-03-27 Deutsche Institute Für Textil- Und Faserforschung Stuttgart Courroies pour banc à étirer à courroies doublées
EP3153607A1 (fr) * 2015-10-08 2017-04-12 Trützschler GmbH & Co. KG Carde comprenant un dispositif de rattache

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5370739A (en) * 1992-06-15 1994-12-06 Materials Research Corporation Rotating susceptor semiconductor wafer processing cluster tool module useful for tungsten CVD
US5680678A (en) * 1995-04-07 1997-10-28 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and guide system for the introduction of a fiber sliver into the nip line of calender disks of a fiber processing textile machine
EP0736619B1 (fr) * 1995-04-07 1998-05-06 Rieter Ingolstadt Spinnereimaschinenbau AG Méthode et dispositif pour insérer du ruban devant la fente de pincement des disques de calandre
EP0736620B1 (fr) * 1995-04-07 1998-06-17 Rieter Ingolstadt Spinnereimaschinenbau AG Dispositif de guidage pour ruban de fibres pour une machine de textile utilisant des rubans de fibres et procédé pour son opération
DE19538477A1 (de) * 1995-10-16 1997-04-17 Rieter Ingolstadt Spinnerei Vliesführung mit Seitenführung im Einlaufbereich
DE19618642B4 (de) * 1996-05-09 2007-07-19 Rieter Ingolstadt Spinnereimaschinenbau Ag Vliestrichter
DE19909040B4 (de) * 1998-04-16 2017-05-24 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung am Ausgang einer Strecke
CH693181A5 (de) * 1998-04-16 2003-03-27 Truetzschler Gmbh & Co Kg Vorrichtung am Ausgang einer Strecke.
DE19908309B4 (de) 1999-02-26 2010-03-04 Rieter Ingolstadt Gmbh Vorrichtung zum Zuführen eines Faserbandes zu einem Streckwerk einer Strecke
ITMI20010079A1 (it) 2000-01-29 2002-07-17 Truetzschler & Co Dispositivo su una carda per ottenere un insieme di fibre
DE10145733B4 (de) 2000-10-19 2017-02-16 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde oder Krempel zur Bildung eines Faserverbandes
DE10348690B4 (de) * 2003-10-16 2014-12-18 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde mit einer Florabnahme- und Bandbildungseinrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR586167A (fr) * 1924-08-19 1925-03-16 Perfectionnements aux entonnoirs comprimeurs-peigneurs employés sur les cardes et les bancs d'étirage
GB406508A (en) * 1933-04-25 1934-03-01 Louis Jacobi Improvements in and relating to funnel guides for the delivery of slivers form cotton drawing frames
FR951999A (fr) * 1946-09-27 1949-11-07 Howard & Bullough Ltd Guide-ruban pour bancs d'étirage ou machines textiles analogues
US3035313A (en) * 1958-12-19 1962-05-22 Rieter Ag Maschf Condensing trumpet
US3814660A (en) * 1963-08-16 1974-06-04 Pavena Ag Draftable non-twisted staple fiber band and process for the manufacture of a draftable staple fiber band of high density and breaking length
FR2271312A1 (fr) * 1974-05-14 1975-12-12 South African Inventions
DE3327574C1 (de) * 1983-07-30 1984-11-29 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung an einer Karde zum Zusammenfassen eines aus einem Lieferwerk einer Karde austretenden Faserflors zu einem Faserband
EP0141691A1 (fr) * 1983-08-29 1985-05-15 Societe Alsacienne De Construction De Materiel Textile Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US984195A (en) * 1910-02-04 1911-02-14 Joseph Cooper Sliver-funnel for textile machinery.
US1554255A (en) * 1923-09-20 1925-09-22 Aubourg Andre Carding machine
GB524887A (en) * 1939-02-10 1940-08-16 John Schofield Improvements in funnels for condensing the slivers from drawing frames and similar textile machines
US3246370A (en) * 1963-04-24 1966-04-19 Maremont Corp Textile fiber condensting trumpet
US3432891A (en) * 1966-11-30 1969-03-18 Maremont Corp Sliver gatherer and conveyor
CH531578A (de) * 1971-08-05 1972-12-15 Honegger & Co Vorm Emil Honegg Luntendüse
DD212754B1 (de) * 1982-12-22 1989-01-11 Textima Veb K Trichter fuer spinnereivorbereitungsmaschinen, insbesondere deckelkarde, strecken, kaemmaschinen und flyer
US4475272A (en) * 1983-02-07 1984-10-09 Rando Machine Company Sliver forming condenser
DE3436526A1 (de) * 1984-10-05 1986-04-10 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Bandtrichter fuer die ablieferung einer spinnereivorbereitungsmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR586167A (fr) * 1924-08-19 1925-03-16 Perfectionnements aux entonnoirs comprimeurs-peigneurs employés sur les cardes et les bancs d'étirage
GB406508A (en) * 1933-04-25 1934-03-01 Louis Jacobi Improvements in and relating to funnel guides for the delivery of slivers form cotton drawing frames
FR951999A (fr) * 1946-09-27 1949-11-07 Howard & Bullough Ltd Guide-ruban pour bancs d'étirage ou machines textiles analogues
US3035313A (en) * 1958-12-19 1962-05-22 Rieter Ag Maschf Condensing trumpet
US3814660A (en) * 1963-08-16 1974-06-04 Pavena Ag Draftable non-twisted staple fiber band and process for the manufacture of a draftable staple fiber band of high density and breaking length
FR2271312A1 (fr) * 1974-05-14 1975-12-12 South African Inventions
DE3327574C1 (de) * 1983-07-30 1984-11-29 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung an einer Karde zum Zusammenfassen eines aus einem Lieferwerk einer Karde austretenden Faserflors zu einem Faserband
EP0141691A1 (fr) * 1983-08-29 1985-05-15 Societe Alsacienne De Construction De Materiel Textile Dispositif de guidage d'un voile de carde et de formation d'un ruban de carde à la sortie d'une carde

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406679A (en) * 1992-12-04 1995-04-18 Trutzschler Gmbh & Co. Kg Web guiding and supporting device at the outlet of a carding machine
EP0704562A1 (fr) 1994-08-30 1996-04-03 Maschinenfabrik Rieter Ag Guidage glissant à la sortie d'une courroie transversale
EP1191135A2 (fr) * 1997-03-08 2002-03-27 Deutsche Institute Für Textil- Und Faserforschung Stuttgart Courroies pour banc à étirer à courroies doublées
EP1191136A2 (fr) * 1997-03-08 2002-03-27 Deutsche Institute Für Textil- Und Faserforschung Stuttgart Courroies pour banc à étirer à courroies doublées
EP1191135A3 (fr) * 1997-03-08 2002-11-13 Deutsche Institute Für Textil- Und Faserforschung Stuttgart Courroies pour banc à étirer à courroies doublées
EP1191136A3 (fr) * 1997-03-08 2002-11-20 Deutsche Institute Für Textil- Und Faserforschung Stuttgart Courroies pour banc à étirer à courroies doublées
EP3153607A1 (fr) * 2015-10-08 2017-04-12 Trützschler GmbH & Co. KG Carde comprenant un dispositif de rattache
CN106987933A (zh) * 2015-10-08 2017-07-28 特吕茨施勒有限及两合公司 带有接头装置的梳理机

Also Published As

Publication number Publication date
EP0370232A3 (fr) 1991-12-27
US5016322A (en) 1991-05-21
DE3839413A1 (de) 1990-05-23
JPH02182920A (ja) 1990-07-17

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