EP3144420B1 - Dispositif de compression avec un dispositif de nettoyage - Google Patents

Dispositif de compression avec un dispositif de nettoyage Download PDF

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Publication number
EP3144420B1
EP3144420B1 EP16185820.4A EP16185820A EP3144420B1 EP 3144420 B1 EP3144420 B1 EP 3144420B1 EP 16185820 A EP16185820 A EP 16185820A EP 3144420 B1 EP3144420 B1 EP 3144420B1
Authority
EP
European Patent Office
Prior art keywords
rotation
cleaning element
cleaning
compaction apparatus
axis
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
EP16185820.4A
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German (de)
English (en)
Other versions
EP3144420A1 (fr
Inventor
Ludek Malina
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
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3144420A1 publication Critical patent/EP3144420A1/fr
Application granted granted Critical
Publication of EP3144420B1 publication Critical patent/EP3144420B1/fr
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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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like

Definitions

  • the invention relates to a compression device with a drive element and a fiber processing element rotatably mounted about an axis of rotation with an attachment, the attachment interacting with the drive element and forming a gear stage which is designed such that the attachment and the drive element rotate at a different speed .
  • a disadvantage of the device according to the WO 2012068692 A1 is that during the compression process, individual fibers detach from the fiber material to be compressed and are deposited on the circumference of the compression element. These fibers can move in the direction of the outer end face of the compression element up to the drive element. The movement of the fibers can be generated, for example, by the rotation of the compression element or by the air flow created during the rotation of the compression element. There is a risk here that fibers that reach the outer end face of the drive element will move to the outer periphery of the attachment and become attached to it.
  • the invention is therefore based on the object of designing a compression device for compressing a fiber material on a spinning machine in such a way that fibers which become detached from the fiber material to be compressed during the compression process do not deposit in the region of the outer end face of the drive element.
  • the compression device having a cleaning device which comprises a cleaning element which is arranged in the direction of the axis of rotation on an end face of the drive element facing away from the fiber processing element and is connected to the attachment in a rotationally fixed manner, wherein the cleaning element has at least one scraper edge which runs in a plane parallel to the end face of the drive element and has an increasing distance from the axis of rotation in its course.
  • the wiping edge of the cleaning element has the advantageous functional effect that those fibers that reach the outer end face of the drive element are wiped off directly from the wiping edge of the cleaning element, so that these fibers no longer move to the outer periphery of the attachment and attach themselves to it can.
  • the compacting device can be operated continuously and therefore no maintenance effort and no long downtimes of the spinning machine have to be taken into account.
  • a higher productivity in the compression of the fiber material can be achieved for the known compression device with the cleaning device according to the invention with a scraper edge.
  • the wiping edge means that edge on the cleaning element which, viewed in the direction of rotation of the cleaning element, actively promotes the fiber material away. All other edges on the cleaning element that have no conveying function with regard to the direction of rotation are not considered to be a wiping edge. It goes without saying that the direction of rotation of the fiber processing element is reversed to understand the corresponding assigned axially symmetrical other edge with a conveying function as a wiping edge.
  • the wiping edge preferably projects at least in sections from the shoulder in the radial direction to the axis of rotation. This has the advantageous effect that when viewed in the direction of rotation of the cleaning element, the wiping edge optimally wipes the fibers on the end face of the drive element.
  • the rotationally fixed connection of the cleaning element to the attachment is preferably a snap connection.
  • the snap connection has the advantage that no tool is required to replace the cleaning element - in the event of a defect - since the replacement can be done manually.
  • the exchange is quick and uncomplicated thanks to the snap connection.
  • the rotationally fixed connection of the cleaning element to the attachment could be a screw, rivet or adhesive connection.
  • the cleaning element preferably has a plurality of scraping edges which are arranged in a star shape.
  • the plurality of wiper edges arranged in a star shape has the advantage that, when viewed in the direction of rotation of the cleaning element, the wiper edges optimally wipe the fibers on the end face of the drive element.
  • the star-shaped arrangement also allows a comprehensive cleaning of the fibers on the front side of the drive element. In this way, an accumulation of the fibers on the outer circumference of the attachment is at least almost completely prevented.
  • the cleaning element preferably has three scraping edges.
  • the cleaning element is preferably designed as an equilateral triangle, so that the three wiping edges, viewed in the direction of rotation, wipe the fibers on the end face of the drive element offset by 120 ° to one another.
  • the cleaning element further preferably has four scraper edges.
  • the cleaning element is preferably designed as a diamond, so that the Four wiping edges, seen in the direction of rotation, wipe the fibers on the front side of the drive element offset by 90 ° to one another.
  • the scraper edge is preferably concave. This has the advantageous effect that the fibers are transported in front of the scraper edge as seen in the direction of rotation of the cleaning element. In this way, optimal removal of the fibers along the concave scraper edge is possible.
  • FIG. 1 shows a schematic side view of a spinning station 10 of a spinning machine (ring spinning machine) with a drafting unit 12 which is provided with an input roller pair 14, 16, a middle roller pair 18, 20 and an output roller pair 22, 24.
  • the lower pairs of rollers 14, 18, 22 are, as indicated schematically, connected to a drive A.
  • the upper pairs of rollers 16, 20, 24 are designed as pressure rollers and are rotatably mounted on a pivotally mounted pressure arm 19.
  • the pressure arm 19 is pivotally mounted about an axis 21 and is acted upon by a spring element F.
  • the peripheral speed of the driven roller 18 is slightly higher than the peripheral speed of the driven roller 14.
  • a fiber material fed to the drafting unit 12 is subjected to a preliminary draft in the form of a sliver L between the pair of input rollers 14, 16 and the pair of central rollers 18, 20.
  • the main distortion of the fiber material L occurs between the middle roller pair 18, 20 and the outlet roller pair 22, 24, the outlet roller 22 having a much higher rotational speed than the middle roller 18.
  • the drawn fiber material V emitted by the pair of output rollers 22, 24 is deflected downward and reaches the area of a suction zone SZ of a subsequent fiber processing device in the form of a suction drum 26 as part of a compression device VM.
  • the suction drum 26 is rotatably mounted in the region of its outer end on a shaft 28 having an axis of rotation 34.
  • the shaft 28 is fastened in a receptacle 29 of a carrier 32.
  • the shaft 28 has a somewhat larger diameter in the region of the receptacle 29, while the ends of the shaft 28 which extend from this receptacle 29 on both sides have a tapered diameter and are used to hold bearings.
  • the rotatable mounting of the suction drum 26 is described below in connection with Figure 3 explained in detail.
  • the carrier 32 is provided at its end facing the spinning machine with a U-shaped or fork-shaped end piece 38, the inner surface of which rests on a partial area of the outer circumference of a suction pipe 40.
  • the suction pipe 40 is connected to a central main channel 44 via one or more connecting channels 42.
  • This main channel 44 is connected to a vacuum source SP, which can be controlled via a control unit ST.
  • a clamping roller 46 is provided for the suction drum 26, which rests on the suction drum 26 via a pressure load and forms a clamping line P with the latter.
  • the pinch roller 46 is rotatably mounted on an axis 48, which is fastened to a bearing element 50 which is connected to a spring element 54 via screws 52 (or other fastening elements).
  • the spring element 54 is fastened to the carrier 32 by means of schematically illustrated screws 52 (or other fastening elements).
  • the clamping line P at the same time forms a so-called "rotation lock gap", from which the fiber material is fed in the conveying direction FS in the form of a compressed yarn FK with rotation being given to a schematically shown ring spinning device.
  • This is provided with a ring 56 and a runner 58, the yarn being wound onto a sleeve 60 to form a bobbin 62 (cop).
  • a thread guide 64 is arranged between the clamping line P and the rotor 58.
  • the ring 56 is attached to a ring frame 66 which performs an up and down movement during the spinning process.
  • the suction drum 26 In the in Figure 2 In the position shown, the suction drum 26 is in a working position in which the outer circumference U of a drive element in the form of a friction wheel 70 rests on the outer circumference U7 of the driven output roller 22 via a correspondingly applied pressure load. In this way, the friction wheel 70 is driven by friction from the output roller 22 in a first gear stage G1.
  • the friction wheel 70 also transmits the drive in a second gear stage G2 to an annular shoulder 72 of the suction drum 26 via friction. This takes place at the point where the inner surface IF with the inner diameter D2 of the friction wheel 70 and the outer circumference AU of the shoulder 72 with the Touch outer diameter D1 or lie on top of each other.
  • the axis of rotation of the friction wheel 70 is offset parallel to the axis of rotation 34 of the shoulder 72, so that with respect to the second gear stage G2, the friction wheel 70 driven by the output roller 22 rotates at a different speed than the suction drum 26.
  • a circular cover cap is arranged in the direction of the axis of rotation 34 on an end face 82 of the friction wheel 70 facing away from the suction drum 26 and is connected to the attachment 72 in a rotationally fixed manner.
  • individual fibers can detach from the fiber material V to be compressed during the compression process, deposit on the circumference of the suction drum 26 and move in the direction of the end face 82 of the friction wheel 70 and thus reach the axial gap between the end face 82 of the friction wheel 70 and the circular cover cap .
  • the movement of the fibers can be generated, for example, by the rotation of the suction drum 26 or the air flow which arises during the rotation of the suction drum 26.
  • a cleaning element 76 according to the invention is used instead of the circular cover cap, as shown purely schematically and in dashed lines in FIG.
  • the cleaning element 76 according to the invention is arranged in the direction of the axis of rotation 34 on the end face 82 of the friction wheel 70 facing away from the screening drum 26 and is connected to the attachment 72 in a rotationally fixed manner. Consequently, the cleaning element 76 rotates at the same speed as the suction drum 26 and differently from the friction wheel 70, all elements 70, 72, 76 being driven in the same direction of rotation.
  • the cleaning element 76 is preferably made of type PA12 polyamide and has opaque properties. This means that the cleaning element is preferably transparent, translucent or see-through. Thus, through the Cleaning element 76 can be seen directly on the end face 82 of the friction wheel 70 and the shoulder 72.
  • the cleaning element 76 has a wiping edge 78 with respect to the direction of rotation of the attachment 72.
  • the scraper edge 78 runs as in FIG Figure 3 shown in a plane (shown in dashed lines) parallel to the end face 82 of the friction wheel 70 and has an increasing distance from the axis of rotation 34 of the shaft 28 in its course.
  • the wiping edge 78 viewed in the direction of rotation, follows the orbit of the shoulder 72 and, because of the different rotational speed between the friction wheel 70 and the shoulder 72, can directly promote or strip away fibers that accumulate on the end face 82 of the friction wheel 70.
  • FIG. 3 it is shown that the suction drum 26 is rotatably mounted on the shaft 28 in the region of its outer end via bearings K.
  • a locking ring 74 is attached to the shaft 28, which prevents the axial displacement of the suction drum 26 during operation.
  • the cleaning element 76 has spring fingers 80 formed in the shape of a crown on the side facing the extension 72 (see in this regard Figures 4a to 4d ).
  • the spring fingers 80 of the cleaning element 76 protrude into the clear width of the annular extension 72 of the suction drum 26.
  • the outside dimension of the ring-shaped Approach 72 is chosen so that it in the in Figure 3 shown position exerts a clamping effect within the clear width of the approach 72.
  • the spring fingers 80 can be provided with additional locking lugs 84 projecting radially outwards, which engage in circumferential recesses 86 within the clear width of the projection 72 in order to fix the cleaning element 76.
  • the cleaning wheel 76 holds the friction wheel 70 in position in the axial direction on the shaft 28.
  • the cleaning element 76 is off Figure 2 shown in perspective.
  • the spring fingers 80 with locking lugs 84 for fastening the cleaning element 76 in the clear width of the attachment 72 are clearly shown as a snap connection.
  • the outer shape of the cleaning element 76 is designed as a triangle.
  • the cleaning element 76 has three wiping edges 78a, 78b, 78c when viewed in the direction of rotation (indicated by an arrow).
  • the scraper edges 78 are formed perpendicular to the plane 88. Alternatively, it is also conceivable to form the scraper edges 78 concave.

Landscapes

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

Claims (8)

  1. Dispositif de compression avec un élément d'entraînement (70) et un élément de traitement de fibres (26) monté de manière rotative autour d'un axe de rotation avec une fixation (72), la fixation (72) interagissant avec l'élément d'entraînement (70) et formant un étage d'engrenage (G2) conçu de sorte que l'élément de traitement de fibres (26) et l'élément d'entraînement (70) tournent en rotation pendant le fonctionnement à une vitesse différente, caractérisé en ce que le dispositif de compression présente un dispositif de nettoyage qui comprend un élément de nettoyage (76), lequel est disposé dans la direction de l'axe de rotation sur une face frontale (82) de l'élément d'entraînement (70) opposée à l'élément de traitement de fibres (26) et est relié de manière non rotative à la fixation (72), l'élément de nettoyage (76) présentant au moins un bord de raclage (78) qui s'étend dans un plan (88) parallèlement à la face frontale (82) de l'élément d'entraînement (70), et vu dans son extension dans le sens de rotation de l'élément de nettoyage, présente une distance croissante par rapport à l'axe de rotation afin d'évacuer activement le matériau fibreux pendant le fonctionnement.
  2. Dispositif de compression selon la revendication 1, caractérisé en ce que le bord de raclage (78) fait saillie au moins par section sur la fixation (72) dans la direction radiale par rapport à l'axe de rotation.
  3. Dispositif de compression selon la revendication 1 ou 2, caractérisé en ce que la liaison non rotative de l'élément de nettoyage (76) à la fixation (72) est une liaison par encliquetage.
  4. Dispositif de compression selon l'une des revendications 1 à 3, caractérisé en ce que l'élément de nettoyage (76) présente une pluralité de bords de raclage (78) qui sont disposés en forme d'étoile.
  5. Dispositif de compression selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de nettoyage (76) présente trois bords de raclage (78a, 78b, 78c).
  6. Dispositif de compression selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de nettoyage (76) présente quatre bords de raclage (78a, 78b, 78c, 78d).
  7. Dispositif de compression selon la revendication 1, caractérisé en ce que le bord de raclage (78) est formé de manière convexe.
  8. Machine à filer à plusieurs dispositifs de compression, caractérisée en ce qu'au moins un dispositif de compression est formé selon l'une des revendications 1 à 7.
EP16185820.4A 2015-09-18 2016-08-26 Dispositif de compression avec un dispositif de nettoyage Active EP3144420B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01353/15A CH711549A1 (en) 2015-09-18 2015-09-18 Cleaning device for a compacting device.

Publications (2)

Publication Number Publication Date
EP3144420A1 EP3144420A1 (fr) 2017-03-22
EP3144420B1 true EP3144420B1 (fr) 2020-04-22

Family

ID=56801468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16185820.4A Active EP3144420B1 (fr) 2015-09-18 2016-08-26 Dispositif de compression avec un dispositif de nettoyage

Country Status (3)

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EP (1) EP3144420B1 (fr)
CN (1) CN106544764B (fr)
CH (1) CH711549A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107861271A (zh) * 2017-09-19 2018-03-30 合肥惠科金扬科技有限公司 一种用于清除tft‑lcd液晶屏表面灰尘的手动擦拭器
CH720446A1 (de) 2023-01-20 2024-07-31 Rieter Ag Maschf Antriebselement und damit ausgestattete Vorrichtung zum Verdichten eines Faserbandes an einer Spinnmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191007385A (en) * 1910-03-24 1911-01-12 Ernest Knowles Improvements in connection with Roller Cleaners for the Drawing Rollers Employed in Various Textile Machines.
US2228809A (en) * 1937-07-06 1941-01-14 Solanas Ramon Balmes Mechanism for drawing textile rovings provided with needle rollers
DE812036C (de) * 1950-01-04 1951-08-27 Erich Dipl-Ing Golde Verschluss fuer Flaschen und aehnliche Behaelter mit Innengewinde
FR1040076A (fr) * 1951-07-24 1953-10-13 Bognier & Burnet Ets Perfectionnements aux bouchons en caoutchouc
US3733644A (en) * 1971-07-16 1973-05-22 Deering Milliken Res Corp Scraper member for drafting system
DE3320208A1 (de) * 1983-06-03 1984-12-06 Ernst Jacobi & Co Kg, 8900 Augsburg Vorrichtung zum abscheiden des bei textilmaschinen anfallenden faserflugs
DE10019636A1 (de) * 2000-04-19 2001-10-25 Temco Textilmaschkomponent Andruckrolle
WO2006002557A1 (fr) * 2004-07-07 2006-01-12 Maschinenfabrik Rieter Ag Dispositif de debourrage pour une machine textile
CH704133A2 (de) 2010-11-26 2012-05-31 Rieter Ag Maschf Vorrichtung zum Verdichten eines Faserbandes an einer Spinnmaschine.
US8678187B2 (en) * 2011-08-02 2014-03-25 Aeroflex Usa Shipping and installation container for soft tubing
CH708518A1 (de) * 2013-09-13 2015-03-13 Rieter Ag Maschf Saugtrommel einer Vorrichtung zum Verdichten eines Fasergutes mit einer Dichtung.
CH709312A1 (de) * 2014-02-27 2015-08-28 Rieter Ag Maschf Verdichtungsvorrichtung mit Saugtrommel.

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3144420A1 (fr) 2017-03-22
CN106544764A (zh) 2017-03-29
CH711549A1 (en) 2017-03-31
CN106544764B (zh) 2020-12-08

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