EP3530781B1 - Dispositif d'alimentation d'une carde - Google Patents

Dispositif d'alimentation d'une carde Download PDF

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Publication number
EP3530781B1
EP3530781B1 EP19156317.0A EP19156317A EP3530781B1 EP 3530781 B1 EP3530781 B1 EP 3530781B1 EP 19156317 A EP19156317 A EP 19156317A EP 3530781 B1 EP3530781 B1 EP 3530781B1
Authority
EP
European Patent Office
Prior art keywords
opening roller
air supply
supply duct
filling chute
feed
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
EP19156317.0A
Other languages
German (de)
English (en)
Other versions
EP3530781A1 (fr
Inventor
Roland Bischof
Pavel JELINEK
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.)
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3530781A1 publication Critical patent/EP3530781A1/fr
Application granted granted Critical
Publication of EP3530781B1 publication Critical patent/EP3530781B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • 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
    • 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
    • D01G15/40—Feeding apparatus
    • 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
    • D01G15/74—Air draught arrangements

Definitions

  • the present invention relates to a feed chute discharge for feeding fiber flocks from a feed chute into a feed channel of a card with an opening roller, a feed roller and an air supply with a fan and an air supply channel.
  • the card produces a card sliver from the fiber material fed in, which is then further processed into a yarn.
  • a fleece can also be produced.
  • a feed chute is usually assigned to a card, which is supplied with fibers from a blow room by a conveyor system. The fibers are transported in the form of fiber flakes.
  • the filling chute is filled with fiber flocks from a transport system continuously or as required. Usually pneumatic transport systems are used. The fiber flocks are fed into the card from the filling chute with the aid of a feeding device in the form of wadding. The evenness of the wadding entering the card plays an important role with regard to the service life of the working elements of the card and the requirements for the carding quality.
  • the evenness of the sliver or fleece produced by the card is also influenced by the evenness of the wadding entering the card.
  • Another important technological parameter in the carding process is the weight of the wad entering the card.
  • the size of the lap weight and the infeed speed of the lap into the card essentially determine the production volume of a card and the carding quality.
  • a feed roller for the continuous withdrawal of the fiber flocks from the hopper.
  • the fiber flocks drawn from the feed chute by the feed roller are fed to a feed channel via an opening roller for additional opening and homogenization.
  • the fiber flocks are formed into a homogeneous wadding with the help of compressed air, which is suitable for feeding the card.
  • a fan is also provided for the feed device, which allows a pressure increase in the feed channel and thereby a compression of the fiber flocks to form a wad.
  • CH 690 651 A5 also a feeding of a card.
  • the transport and compression air is also guided tangentially along the opening roller.
  • the air flow guided in the direction of the movement of the surface of the opening roller serves to pneumatically support the detachment of the fiber flocks from the needles of the opening roller.
  • the disadvantage of the air guidance disclosed is that, due to an uneven occupancy of the opening roller by the fiber flocks, the amount of air which is guided along the opening roller is not constant or controllable or regulatable. This affects the transport of flocks in the feed channel and the compression of the fiber flocks into wadding at the end of the feed channel. Further reveals the EP 2 011 908 A1 a filling chute discharge according to the preamble of claim 1.
  • the object of the present invention is therefore to create a feed chute discharge for feeding fiber flocks from a feed chute into a feed channel of a card, which enables a controllable addition of transport and compression air into the feed channel without being exposed to the influence of the opening roller occupancy and nevertheless a to achieve even distribution of the compression air in the feed channel.
  • a feed chute discharge is proposed for feeding fiber flocks from a feed chute into a feed channel of a card with an opening roller with an axis and an axial working length, with a feed roller upstream of the opening roller and with an air supply which has a fan and an air supply channel.
  • the air supply duct has a cross section with a width that expands in the direction of the axis of the opening roller and a height as seen perpendicular to the width.
  • the air supply duct consists of a first part and a second part.
  • the second part is arranged with a longitudinal extension from the first part in the direction of an end opposite the first part at least partially tangential to the opening roller and with a length at least up to or above a lower wall perpendicular to one of the opening roller and passing through the axis of the opening roller also provided.
  • the proposed length of the air supply channel beyond the opening roller level achieves an air supply to the fiber flock flow which is independent of the occupancy of the opening roller.
  • the fiber flocks are transported away by the opening roller, which is equipped with needles, due to a centrifugal force generated by a rotation of the opening roller and only then come under the influence of the air flow.
  • the air flow speed is lower than the circumferential speed of the opening roller at its needle tips.
  • the air flow is also only insignificantly influenced by the rotating opening roller.
  • a uniform air flow is achieved over the entire axial working width of the opening roller.
  • the air flowing into the feed channel causes, in spite of the guide protruding beyond the opening roller plane, a suction which acts on the discharge area of the opening roller and supports the fiber flock discharge.
  • the uniform distribution of the compression air in the feed channel achieves a homogeneous compression of the fiber flocks to form a wad in the feed channel and ensures that the wad is drawn in automatically at the card's feed device.
  • the feed roller is preferably equipped with all-steel fittings and has a diameter of 200 mm to 300 mm, preferably 250 mm.
  • a higher conveying capacity can be achieved at a lower take-off speed. This contributes to a gentler treatment of the fibers and makes it easier for the fibers to be taken over by the subsequent opening roller.
  • the first part of the air supply channel is advantageously designed as a diffuser with a first cross section at the outlet of the fan and a second cross section at the transition into the second part of the air supply channel.
  • the dimensions of the first cross section correspond to a fan outlet and the second cross section has a width which corresponds to the axial working length of the opening roller.
  • the diffuser is designed in such a way that the cross section widens in the direction of the axis of the opening roller and decreases in the direction perpendicular to the axis of the opening roller. In this way, a uniform air flow can be achieved over the entire cross section.
  • the air supply duct preferably has a width of 1200 to 1600 mm and a height of 20 to 150 mm at the point of a transition from the first part to the second part of the air supply duct.
  • the width here corresponds to the working width of the following card.
  • an adjusting member is provided between the first part and the second part or in the first part of the air supply duct.
  • Slides, flaps or also elements which partially close the cross-section are conceivable as adjusting elements.
  • the adjusting element can be used to reduce the cross section as well as to influence the air flow.
  • the adjusting member is preferably a slide. This can be designed as a simple sheet metal clamped between the flanges of the two parts of the air supply duct, which can be pushed into the free cross section after loosening the flange connection. Automation of the setting by attaching actuators is also conceivable. In order to achieve a lower air speed when the air flow hits the fiber flocks, the adjustment element should be arranged as far away from this point as possible.
  • the lower wall facing away from the opening roller in the second part of the air supply channel has a step with a step depth in front of the opening roller plane for a sudden change in the height of the air supply channel.
  • the volume-pressure ratio of the air flowing into the feed channel is influenced.
  • the stage also influences the flow conditions at the passage of the air from the air supply duct into the feed duct.
  • the step enables the air to expand, which results in a decrease in the flow velocity.
  • the step depth is preferably adjustable and is between 0 mm and 25 mm. Adjustability can be achieved by exchanging the corresponding duct parts or by introducing air baffles.
  • the opening roller is provided with a cover which ensures the transition from the feed roller to the feed channel.
  • a wall of the second part of the air supply duct facing the opening roller is advantageously connected to this cover, which partially surrounds the opening roller, via a guide plate.
  • the baffle separates the opening roller and the air supply duct.
  • the guide plate is preferably releasably attached to the second part of the air supply duct or to the cover. As a result, it is possible to adjust the guide plate and, as a result, to adjust the distance between the end of the air supply duct and the plane of the opening roller. The distance can be set by moving, swiveling or exchanging the guide plate.
  • the guide plate represents the end of the air supply channel and advantageously protrudes by a certain distance beyond the level of the opening roller. This distance is preferably 10 mm to 50 mm. The distance can be adjusted depending on the product to be processed, according to the behavior of the fiber material when the fiber flocks are discharged from the opening roller.
  • a card with a feed chute is also proposed, a feed chute discharge according to the above description being provided in the feed chute.
  • Figure 1 shows a revolving flat card 1 equipped with a feed chute 2, a feed chute 5 and a feed channel 3. After they have passed through the various process stages of a blow room, fiber flocks 4 arrive in the feed chute 2.
  • the fiber flocks 4 are fed through the feed chute 5, comprising a feed roller 6 and an opening roller 7 and an air supply 8, passed on to the feed channel 3.
  • an air supply 8 is provided to support the transfer of flakes to the feed channel 3 and to ensure lap compaction upstream of a feed device 10 of the card 1.
  • the air supply 8 blows air tangentially along the opening roller 7 into the feed channel 3 and thereby compresses the fiber flocks into a wad supply 11 with a high wad weight necessary for further processing in the card 1.
  • the air blown in through the air supply 8 flows through the fiber flocks 4 or the wadding 11, which are discharged from the opening roller 7 into the feed channel 3. This air flow leaves the feed channel 3 through the air-permeable area 9 of the wall at the end of the feed channel 3.
  • a feed device 10 following the feed channel 3 feeds the fiber flocks, now in the form of a homogeneous wadding 11, to the licker-in module 12 of the card 1.
  • the fiber flocks released by the feed device 10 from the wadding template 11 are opened further by the lickerins contained in the lickerin module 12 and at the same time freed from some of the impurities contained therein.
  • the last lickerin of the lickerin module 12 finally transfers the fibers to the card drum 13, which completely dissolves and parallelizes the fibers.
  • the card drum 13 works together with the cover assembly 14 for this purpose. After the fibers have partially made several revolutions on the card drum 13, they are removed from the doffer 15, fed to a sliver-forming unit 16 and finally deposited in a can in the form of a card sliver 17 (not shown).
  • FIG. 2 shows a schematic side view of a feed chute discharge 5 according to the invention.
  • the fiber flocks 4 located in the feed chute 2 are fed to an opening roller 7 by the feed roller 6.
  • the feed roller 6 works together with a feed trough 18.
  • the fiber flocks taken over by the feed roller 6 are fed to the feed channel 3 by the opening roller 7.
  • the fiber flocks are thrown away from the needles of the opening roller 7 by the opening roller 7 rotating about its axis 31 due to the centrifugal force that is generated in the process.
  • the fiber flocks are captured by the air stream 8 and conveyed through the feed channel 3 in the direction of flow 29.
  • the air flow 8 is generated by a fan 26 and guided via the air supply duct 28 to the feed duct 3.
  • the air flow 8 is removed again in an air-permeable area 9 of the wall of the feed channel 3 and returned to the fan 28 via the air channel 30.
  • the air supply channel 28 consists of a first part 20 and a second part 21.
  • the first part 20 is connected to the fan 26 and is designed as a diffuser.
  • An adjusting member 23 is provided between the first part 20 and the second part 21 of the air supply duct 28.
  • the setting member 23 is shown as an example as a slide and is used to set the amount of air in the air flow 8 to the feed duct.
  • a step 22 with a step depth D is provided in the lower wall 25 before the air flow 8 enters the feed duct 3.
  • the step 22 increases the cross section of the air supply duct 28 suddenly, which leads to an expansion of the air and thus to a decrease in the air speed.
  • the air speed of the air flow 8 is reduced below the circumferential speed of the needles attached to the opening roller 7, whereby an influence of the air flow 8 on the process of flock discharge from the opening roller 7 is minimized.
  • the step depth D is adjustable.
  • the wall opposite the lower wall 25 of the second part 21 of the air supply duct 28 is provided with a guide plate 24 in the area of the opening roller 7.
  • the guide plate is connected to a cover 27 of the opening roller 7.
  • the air flow 8 is guided through the guide plate 24 past the opening roller 7 to the feed channel 3.
  • the guide is arranged beyond an opening roller plane 19, seen in the flow direction 29 of the fiber flocks.
  • the opening roller plane 19 is an imaginary plane extending over the length of the opening roller 7 perpendicular to the lower wall 25 of the second part 21 of the air supply duct 28 through the axis 31 of the opening roller 7.
  • the guide plate 24 protrudes beyond the opening roller plane 19 at a distance A in the direction of flow 29.
  • the guide plate 24 is provided adjustable in its distance A from the opening roller plane 19.
  • Figures 3 and 4 show a schematic representation of an air supply channel 28 according to the invention of a filling shaft discharge 5, wherein Figure 4 a partial view in the direction X of the air supply channel 28 of FIG Figure 3 is.
  • the air supply duct 28 is composed of the first part 20 and the second part 21 and the adjusting element 23 arranged between them.
  • the first part 20 is designed as a diffuser, whereby it decreases from the flange cross-section of the fan in one dimension to a height H and expands in the other dimension to the width C, the width C corresponding to one axial length of the opening roller or the width of the feed channel.
  • a step 22 with a step depth D is provided, which leads to a sudden expansion of the height H of the air supply duct 28.
  • the boundary of the air supply duct 28 opposite the lower wall 25 is provided with a guide plate 24.
  • the guide plate 24 protrudes beyond the opening roller plane 19 by the distance A, as seen in the flow direction 29.
  • the opening roller plane 19 is an imaginary plane perpendicular to the lower wall 25 of the second part 21 of the air supply channel 28 through the axis 31 of the opening roller 7.
  • the guide plate 24 is designed to be adjustable, so that, for example, the distance A can be adjusted to a shortened distance B.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (11)

  1. Évacuation de goulotte de remplissage (5) permettant d'alimenter des flocs de fibres (4) d'une goulotte de remplissage (2) dans un canal d'alimentation (3) d'une carde (1), comportant un cylindre couvert (7) comportant un axe (31) et une longueur de travail axiale, comportant un cylindre d'alimentation (6) en amont du cylindre couvert (7) et comportant une arrivée d'air (8), laquelle présente un ventilateur (26) et un canal d'arrivée d'air (28), le canal d'arrivée d'air (28) présentant une section transversale comportant une largeur en expansion (C) en direction de l'axe (31) du cylindre couvert (7) et une hauteur (H) vue perpendiculairement à la largeur (C), caractérisée en ce que le canal d'arrivée d'air (28) se compose d'une première partie (20) et d'une seconde partie (21), la seconde partie (21) étant disposée, avec une extension longitudinale depuis la première partie (20) en direction d'une extrémité opposée à la première partie (20), de façon au moins partiellement tangente au cylindre couvert (7) et étant prévue au moins jusqu'à une paroi inférieure (25) opposée de façon perpendiculaire au cylindre couvert (7) et un plan de cylindre couvert (19) passant à travers l'axe (31) du cylindre couvert (7) ou bien au-delà.
  2. Évacuation de goulotte de remplissage (5) selon la revendication 1, caractérisée en ce que la première partie (20) du canal d'arrivée d'air (28) est réalisée sous la forme d'un diffuseur comportant une première section transversale à la sortie du ventilateur (26) et une seconde section transversale au niveau du passage dans la seconde partie (21) du canal d'arrivée d'air (28), les dimensions de la première section transversale correspondant à une sortie de ventilateur et la seconde section transversale présentant une largeur (C) qui correspond à la longueur de travail axiale du cylindre couvert (7).
  3. Évacuation de goulotte de remplissage (5) selon la revendication 1 ou 2, caractérisée en ce qu'au point de passage de la première partie (20) dans la seconde partie (21) du canal d'arrivée d'air (28), le canal d'arrivée d'air (28) présente une largeur (C) de 1200 à 1600 mm et une hauteur de 20 à 150 mm.
  4. Évacuation de goulotte de remplissage (5) selon l'une des revendications précédentes, caractérisée en ce qu'un organe de réglage (23) est prévu entre la première partie (20) et la seconde partie (21) ou dans la première partie (20) du canal d'arrivée d'air (28).
  5. Évacuation de goulotte de remplissage selon la revendication 4, caractérisée en ce que l'organe de réglage (23) est un curseur.
  6. Évacuation de goulotte de remplissage (5) selon l'une des revendications précédentes, caractérisée en ce que la paroi inférieure (25) opposée au cylindre couvert (7) dans la seconde partie (21) du canal d'arrivée d'air (28), vue dans la direction d'écoulement (29), présente, en amont du plan de cylindre couvert (19), une marche (22) comportant une profondeur de marche (C) permettant de changer soudainement la hauteur (H).
  7. Évacuation de goulotte de remplissage (5) selon la revendication 6, caractérisée en ce que la profondeur de marche (C) est réglable et est comprise entre 0 mm et 25 mm.
  8. Évacuation de goulotte de remplissage (5) selon l'une des revendications précédentes, caractérisée en ce qu'une paroi de la seconde partie (21) du canal d'arrivée d'air (28) faisant face au cylindre couvert (7) est reliée à un couvercle (27) entourant partiellement le cylindre couvert (7) par l'intermédiaire d'une plaque de guidage (24).
  9. Évacuation de goulotte de remplissage (5) selon la revendication 8, caractérisée en ce que la plaque de guidage (24) est fixée de manière amovible à la seconde partie (21) du canal d'arrivée d'air ou au couvercle (27).
  10. Évacuation de goulotte de remplissage (5) selon la revendication 8 ou 9, caractérisée en ce que la plaque de guidage (24) fait saillie d'une distance (A, B) au-dessus du plan de cylindre couvert (19), la distance (A, B) étant comprise entre 10 mm et 50 mm.
  11. Carde (1) comportant une goulotte de remplissage (2), caractérisée en ce qu'une évacuation de goulotte de remplissage (5) selon l'une des revendications 1 à 10 est prévue dans la goulotte de remplissage (2).
EP19156317.0A 2018-02-26 2019-02-11 Dispositif d'alimentation d'une carde Active EP3530781B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00226/18A CH714679A1 (de) 2018-02-26 2018-02-26 Füllschachtaustrag zur Speisung einer Karde.

Publications (2)

Publication Number Publication Date
EP3530781A1 EP3530781A1 (fr) 2019-08-28
EP3530781B1 true EP3530781B1 (fr) 2021-08-25

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EP19156317.0A Active EP3530781B1 (fr) 2018-02-26 2019-02-11 Dispositif d'alimentation d'une carde

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EP (1) EP3530781B1 (fr)
CN (1) CN110195273B (fr)
CH (1) CH714679A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110629332A (zh) * 2019-10-21 2019-12-31 宁夏联权绒业开发有限公司 一种分梳机
CN115404572B (zh) * 2022-01-25 2023-11-21 东华大学 一种亚微米梳理制条装置及其操作方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128564A1 (de) * 1981-07-18 1983-02-03 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum abliefern eines faserflockenvlieses, insbesondere zum beschicken einer textilmaschine, z. b. einer karde
DE3530327A1 (de) * 1985-06-07 1987-03-12 Truetzschler & Co Vorrichtung zum beschicken einer karde oder krempel mittels zweier fuellschaechte
DE3542816A1 (de) * 1985-12-04 1987-06-11 Hollingsworth Gmbh Vorrichtung zur zufuehrung von fasergut mittels eines speiseschachtes zu einer verarbeitungsmaschine
DE3928280C2 (de) * 1989-08-26 2001-03-22 Truetzschler Gmbh & Co Kg Vorrichtung zum Speisen von in Flockenform befindlichem Fasergut, z. B. Baumwolle, Chemiefasern u. dgl., zu einer Karde oder Krempel
DE4434251B4 (de) * 1994-09-24 2006-02-23 Trützschler GmbH & Co KG Speiseeinrichtung für Karden, Krempeln o. dgl. für Textilfasermaterial
IT1277653B1 (it) * 1994-10-10 1997-11-11 Truetzschler & Co Dispositivo per la separazione di fiocchi di fibre sciolti da una corrente d'aria, per esempio una carica di fiocchi per una carda,
DE19522995B4 (de) * 1994-10-10 2006-03-16 Trützschler GmbH & Co KG Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Luftstrom, z.B. Flockenbeschickung für eine Karde, Reiniger o. dgl.
IT1303784B1 (it) * 1998-11-24 2001-02-23 Flii Marzoli & C S P A Dispositivo di preparazione e di apertura di fibre in fiocco daalimentare ad una carda.
WO2006086909A1 (fr) * 2005-02-17 2006-08-24 Maschinenfabrik Rieter Ag Tremie d'alimentation pour metiers a filer
EP2251466A3 (fr) * 2007-06-25 2011-04-06 Oskar Dilo Maschinenfabrik KG Dispositif d'alimentation pour flocons de fibres tout comme procédé destiné à l'installation de fibres ou de flocons de fibres
EP2011908A1 (fr) * 2007-07-05 2009-01-07 MARZOLI S.p.A. Dispositif combiné pour l'ouverture et l'introduction de fibres de bourre dans une machine de cardage
CH706658A1 (de) * 2012-06-29 2013-12-31 Rieter Ag Maschf Verfahren und Vorrichtung zur Regelung der Faserzufuhr zu einer Karde.

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Publication number Publication date
EP3530781A1 (fr) 2019-08-28
CN110195273B (zh) 2022-11-29
CH714679A1 (de) 2019-08-30
CN110195273A (zh) 2019-09-03

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