EP1176236B1 - Garniture en éléments de dents de scie - Google Patents

Garniture en éléments de dents de scie Download PDF

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Publication number
EP1176236B1
EP1176236B1 EP01117178A EP01117178A EP1176236B1 EP 1176236 B1 EP1176236 B1 EP 1176236B1 EP 01117178 A EP01117178 A EP 01117178A EP 01117178 A EP01117178 A EP 01117178A EP 1176236 B1 EP1176236 B1 EP 1176236B1
Authority
EP
European Patent Office
Prior art keywords
roller
feed
draw
tooth
wire
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.)
Expired - Lifetime
Application number
EP01117178A
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German (de)
English (en)
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EP1176236A1 (fr
Inventor
Götz Theodor Dr. Gresser
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
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Maschinenfabrik Rieter AG
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Publication date
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Publication of EP1176236A1 publication Critical patent/EP1176236A1/fr
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Publication of EP1176236B1 publication Critical patent/EP1176236B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
    • D01G15/20—Feed rollers; Takers-in
    • 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
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips

Definitions

  • the invention relates to a set for a feed roller, or on a roller with such a set.
  • the invention includes a suitable wire form for the stated purpose.
  • each tooth at the tooth tip has a short straight zone, for example 0.6 to 1.5 mm, which is aligned parallel to the foot plane of the tooth root. Furthermore, every tooth has a tooth face and a tooth back. To ensure a sufficient conveying effect, a tooth form with a back angle of almost 90 ° was selected, with the breast angle and the wedge angle both being 0 ° or nearly 0 °. Accurate detection of material variations should be facilitated by using teeth (and therefore tooth spaces) at a lower height. Although not specifically referred to as a subtask, it is apparently also intended to help achieve a large open space around each tooth to avoid wrapping. Although the font also shows a hopper ( Fig. 4 ), but since there is no detection of material fluctuations at the feed roller shown in the shaft, it is not clear which specific advantages would speak for the use of the new set in the shaft.
  • the invention relates to a feed roller set according to claim 1.
  • the wedge angle ⁇ of each tooth is 30 ° to 120 °, with a value of about 80 ° being appropriate.
  • the breast angle is -20 ° to -60 °, with a value of about -40 ° is appropriate.
  • This angle is trapped between the material conveying flank and a line perpendicular to the base of the wire.
  • the preferred tooth shape or tooth geometry is based on an isosceles triangle.
  • the tooth form or the tooth geometry can be chosen asymmetrically, wherein the less steep flank can serve to convey the fiber material in the normal conveying direction.
  • the drive for the feed roller may be reversible, so that the steeper flank may also have to be used to convey material, for example, to empty the feed roller or to remove foreign materials that get between the trough and the feed roller.
  • the tooth pitch is preferably between 3.0 and 5.0 mm. It is preferably chosen larger than the blade height.
  • the foot width is e.g. 2.0 to 4.0 mm and is preferably chosen to be larger than the blade height when the wire windings are wound side by side.
  • the card 10 after Fig. 1 corresponds to the doctrine of EP-A-866 153 (or the further developments in EP-A-989 213 and / or in FIGS. 9 to 22 of FIG WO-A-99/50486 ).
  • This card type is only listed here as an example.
  • the invention is also in combination with a conventional card cross section (eg after the Fig. 1 of the WO-A-99/50486 ) usable.
  • the structure of the hopper 12 after the Fig. 2 basically corresponds to the structure according to EP-A-894.878 , wherein in the embodiment according to FIG. 2 the cleaning points of the EP-A-894.878 were omitted.
  • the invention can also be used in a hopper, the cleaning points according to EP-A-894.878 is provided.
  • the material flow direction runs from right to left, whereby the actual flock feeding ( Fig. 2 ) in FIG. 1 not shown.
  • the supplied from the flock feeding fiber material is supplied in the form of a batt of the card 10, forwarded by a feed roller 14 to a licker module 16 (also called Briseurmodul), a drum 18 (also called Tambour) handed over and by the cooperation of the drum with a set of revolving lids a moving lid unit 20 further dissolved and cleaned.
  • the lids of the traveling lid set are guided by a suitable drive system of the revolving flat unit via deflection rollers 24 along a closed path (in the same direction or in opposite directions to the direction of rotation of the drum).
  • Fibers from the nonwoven fabric on the drum are removed by a pickup 26 and formed into a pullout section (not shown) in an outfeed section 28 made up of different rolls.
  • This card sliver is from a tape storage (not shown here, see eg EP-A-99/58749 ) placed in a transport can in cycloid turns.
  • the arrangement after Fig. 1 is listed as an example only. The features to be described can also be used in other card types and in carding machines, even in the large machines that are suitable for the production of nonwovens (nonwovens).
  • the revolving flat unit 20 comprises flat bars 22, of which in Fig. 1 only individual bars are shown schematically.
  • the currently used traveling lid arrangement of a conventional card (for example the C51 card of the registration company) comprises more than one hundred flat bars.
  • the rods are supported at their ends by endless belts 30 and thereby moved against the direction of rotation of the drum or in synchronism with this direction of rotation. Examples of such devices are in EP-A-753 610 to find.
  • Each flat bar 22 preferably comprises a clothing carrier in the form of a hollow profile, for example as well as in FIG US 5,542,154 shown.
  • the clothing strip attached to this carrier is preferably formed as a flexible (“semi-rigid”) clothing, ie the tape comprises a flexible body which is fastened to the carrier and individual tips, parts of which are embedded in the body.
  • the traveling lid arrangement can be replaced by fixed covers, for example according to the principles in US-B-3,604,062 ; US-B-3,044,475 and US-B-3,858,276 were declared.
  • the portion of the drum periphery covered in the revolving-flat card by the revolving-deck arrangement may be referred to as the main carding zone. In this zone most of the carding work is done. But there are additional working elements in other zones of the drum 18 are provided to bring about a further carding effect.
  • the part of the drum circumference between the licker-in module 16 and the revolving flat unit 20 is here referred to as Vorkardierzone, the part of the drum circumference between the revolving flat 20 and the pickup 26 as Nachkardierzone, and the part of the drum circumference between the pickup 26 and the licker-in module 16 as Unterkardierzone.
  • additional processing elements may be applied, with preference given to the attachment of such elements in the carding zone.
  • Vorkardierzone finds at least one additional segment 32 with a Schmutzausdorfemesser (zBnach EP-A-848 091 and or WO-A-99/61688 ) Space.
  • the Nachkardierzone are at least one additional segment 32 and at least one carding rod 34, which can be formed similar to the flat bars.
  • the drum 18 is otherwise covered by cover 36.
  • a suitable cladding is in EP-B-431 482 respectively.
  • the diameter of the cylindrical surface of the drum 18 is also an important measure of the machine. Along with the working width, the diameter determines the working surface of the drum, wherein it is undesirable to exceed a given fiber density per unit area.
  • the drum diameter is between 700 mm and 1000 mm, wherein preferably a diameter between 750 mm and 850 mm is selected.
  • the preferred diameter range is 800 to 820 mm.
  • the card has FIG. 1 preferably a working width greater than 1300 mm, for example 1500 mm.
  • the solution after Fig. 1 includes in Vorreissermodul 16 three licker-in accordance with EP-A-989 213 , whereby only one licker-in can be used.
  • the one or the first licker-in works together with the feed roller 14, which takes over the fibers from a wadding which is fed from the feed chute (cf. Fig. 2 ) is formed.
  • the hopper 12 according to Fig. 2 comprises an upper part 40 (a feed chute, in FIG Fig. 2 only partially shown), as well as a lower shaft part 42 (reserve shaft). Fiber flakes from the lower shaft portion 42 are discharged by two conveyor rollers 44 as the aforementioned cotton and forwarded to the feed roller 14 of the carding machine 10.
  • a feed device 48 which feeds the flakes to an opening roller 46.
  • Such devices are generally well known.
  • cleaning elements should be attached to the dissolving or opening roller 46 to form a cleaning module which allows significant changes in the upstream investment areas.
  • the feeder 48 and opening roller 46 together with the adjacent part of the housing of the shaft, so reshaped, that results in a "fine cleaner".
  • the adjustment requires elements on the circumference of the opening roller 46, which allows the removal of dirt.
  • the feed device 48 constitutes a "clamping feed” for the opening roller 46.
  • This clamping feed consists of a feeding roller 50 and a trough 52.
  • Such arrangements are also known at other points in the spinning preparation, for example in the feed to a fine cleaner ( Example - see EP-B-419915 ) and on the aforementioned feed roller of the card itself (example - see EP-A-926 274 ).
  • the still to be described embodiment of the invention has been designed for use in the hopper, but is not limited to this application.
  • FIG. 2A In detail after the FIG. 2A are the directions of rotation of the rollers 50 and 46 also indicated by an arrow. From this figure it can also be seen that the effective nip line between the trough 52 and the feed roller 50 can be brought very close to the transfer point to the opening roller 46.
  • the illustrated arrangement of the directions of rotation results in a so-called "synchronized feeding”, ie the material combed out of the nip line by the roller 46 is carried away from the trough 52.
  • the roller 46 runs in the reverse direction of rotation, so that the combed material between the trough 52 and the roller 46 is guided.
  • the (illustrated) synchronous feeding results in a gentle treatment of the fibers compared to the reverse feed. However, the fiber material does not always separate cleanly from the feed roller 50 when using a synchronized feed, ie the material is returned to the upper part of the shaft on the surface of the roller 50 again. The risk of winding formation is thereby increased.
  • the feed roller 50 according to the FIG. 3 includes a cylindrical support body 54 and a clothing formed from a wire length 56 wound around the body 54.
  • the common term “Säge leopardgarnitur” is also used for this set; the intended tooth shape or tooth geometry is described below with reference to FIGS. 5 and 6 explained.
  • the representation according to the FIG. 3 is only schematic because only one only "clothing winding" (a single wrap of the wire 56 around the body 54) has been mapped to clearly show the clothing principle and also the comparison with DE-A-19708261 to enable.
  • the teeth 58 of a clothing according to this invention are formed as "triangular" teeth, wherein the triangles are preferably isosceles. Each tooth can be formed with a tip, as in the FIG. 3 is shown; The tips of the teeth can also be truncated, as in the FIG. 3A for modified teeth 58A has been indicated schematically (and to a larger scale) with AS.
  • FIG. 4 the definition of the "negative angle" in the FIG. 4B must be respected.
  • This definition is to be understood as meaning that if the wedge angle includes the imaginary vertical line forming the angle of the bust, then the angle of the bust is still measured from that perpendicular line, the value thus measured being classified as a negative angle with such a "negative breast angle” is in FIG. 4B indicated by the dashed line, this line running in the thoracic (or conveying flank) of the tooth.
  • the assumed normal conveying direction is also by means of an arrow in the FIG.
  • the tooth flank which defines the breast angle
  • the breast angle is always less than 90 ° and is trapped between the material-promoting tooth flank and a line that runs through the tooth tip and is perpendicular to the base of the wire.
  • the wire 56 which the set after the FIG. 3 is in outstretched form in the FIGS. 5 and 6 shown. It basically comprises a foot section 60 and a blade section 62 projecting from the foot section 60, the actual teeth 58 being formed in the blade section 62.
  • sheet height is the term. "Blade depth" BT ( Fig. 5 ) used.
  • the blade depth or blade height BT of a wire according to the invention is conveniently chosen smaller than 2.5 mm, the preferred range being 1.3 to 1.7 (for example 1.5) mm.
  • the blade depth or blade height BT also limits the depth of the teeth, for which, however, no preferred range must be specified here.
  • the tooth depth is chosen to be somewhat smaller than the blade depth BT or blade height, according to today's conventional manufacturing procedures - this conventional practice can be maintained for wires according to this invention.
  • the tooth pitch P is expediently more than 3 mm, the preferred range being 3 to 5 mm. It can e.g. a value of 4 mm at a blade depth of 1.5 mm can be selected.
  • the pitch P is in any case preferably 1.5 times the blade depth, or more.
  • the foot width b1 is preferably 2.0 to 4.0 mm. When neighbor turns are placed side by side, as with dashed lines in Fig. 5 is indicated, the foot width b1 also determines the "pitch" (see. DE-A-19708261 and ISO 5234, Table 4). As the latter font shows ( Fig. 5b in DE 19708261 ), the pitch can also be influenced by other means (in Fig. 5D of the DE 19708261 through a spacer wire; but the clothing wire can also be wound in a spiral groove in the carrier body, so that, in the case, the pitch of the groove determines the pitch). The pitch is preferably at least 3.0 mm, but can be limited to 5.00 mm.
  • the wire is placed in a groove, it is possible to work with a smaller foot width, but it is preferably at least 1 mm. Even if the wire turns are placed side by side, they can have a so-called chaining. However, since the concatenation of clothing wire is well known and has nothing directly to do with the invention, will not be discussed here in detail.
  • the arrangement according to the FIG. 6 emanates from teeth that are formed as isosceles triangles. With such an arrangement, it does not matter in which direction the fiber material is to be conveyed from one tooth flank or the other.
  • the wedge angle ⁇ (cf. Fig. 4 ) reads in the range 30 ° to 120 °, the preferred value being between 70 ° and 100 ° (for example at 80 °). Of the Breast angle ⁇ (cf. Fig. 4 ) is from (-20 °) to (-60 °), with the preferred value being (-40 °).
  • the tooth geometry for a wire according to the invention is not limited to the isosceles triangle.
  • An alternative is in the FIG. 7 from which it can be seen that the tooth can be triangular but asymmetrical.
  • the breast angle ⁇ of such a tooth can be, for example, -60 °, namely at a wedge angle of about 70 °.
  • the normal conveying direction is in Fig. 7 indicated by the arrow, ie the less steep edge 64 is normally used to convey the fiber material.
  • the steeper flank 66 (of the "tooth spine") can serve to convey the material when the drive motor (not shown) for the feed roller is reversible, as explained in the introduction.
  • the invention is particularly important where it must be expected that the supply of material to the card must be temporarily adjusted.
  • the feed roller should reliably "thread” the material from the shaft part 40 into the feeder when restarting.
  • the set must have a certain "aggressiveness", which is ensured by means of the selected tooth geometry.
  • An aggressive garnish exerts “restraining forces” on the material, which can lead to problems in separating the material from the pickup roller.
  • a clean separation is very important, otherwise the risk of winding is increased. Since this risk is also dependent on the fiber assortment, the clothing must be selected such that it does not form a roll on the feed roller with the material to be processed.

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

Claims (11)

  1. Cylindre d'alimentation ou d'amenée (50) comprenant une garniture en forme de fil enroulé, le fil de garniture (56) présentant une partie de base (60) et une partie de feuille saillant hors de la partie de base, la partie de feuille étant formée avec des dents triangulaires et la hauteur de feuille (BT), définie en tant que la hauteur totale (h1) moins la hauteur de la base (h2), étant inférieure à 2,5 mm, caractérisé en ce que l'angle d'attaque α de chaque dent, qui est formé entre le flan avant et une ligne perpendiculaire à la base du fil, vaut -20° à -60°, et l'angle de taillant β de chaque dent vaut 30° à 120°.
  2. Cylindre d'alimentation ou d'amenée (50) selon la revendication 1, caractérisé en ce que la forme des dents correspond essentiellement à un triangle isocèle.
  3. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'écart entre les dents est compris entre 3,0 et 5,0 mm.
  4. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'écart entre les dents est choisi supérieur à la hauteur de feuille.
  5. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur de la base (b1) est supérieure à la hauteur de feuille (BT).
  6. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur de la base (b1) est comprise entre 2,0 et 4,0 mm.
  7. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le fil présente une largeur de base (b1) d'au moins 1 mm, afin de pouvoir être inséré lors de l'utilisation dans une rainure.
  8. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, caractérisé en ce que la hauteur de feuille (BT) est inférieure à 2,0 mm, notamment est comprise entre 1,0 mm et 2,0 mm, de préférence entre 1,3 mm et 1,7 mm.
  9. Cylindre d'alimentation ou d'amenée (50) selon l'une quelconque des revendications précédentes, à l'exception de la revendication 2, caractérisé en ce que la géométrie de la dent est formée suivant un triangle asymétrique, les flancs moins pentus étant utilisés dans la direction d'avance.
  10. Cylindre d'alimentation ou d'amenée selon l'une quelconque des revendications précédentes, caractérisé en ce que la hauteur de pas du fil est comprise entre 3,0 et 5,0 mm.
  11. Hotte d'alimentation comprenant un dispositif d'apport (48), pour fournir un matériau fibreux à un cylindre d'ouverture, constituée d'un cylindre d'alimentation ou d'amenée (50) et d'une cavité d'alimentation (52), caractérisée en ce que le cylindre d'alimentation ou d'amenée est réalisé selon l'une quelconque des revendications 1 à 9.
EP01117178A 2000-07-28 2001-07-16 Garniture en éléments de dents de scie Expired - Lifetime EP1176236B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15012000 2000-07-28
CH15012000 2000-07-28

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EP1176236A1 EP1176236A1 (fr) 2002-01-30
EP1176236B1 true EP1176236B1 (fr) 2008-04-23

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108140A1 (de) * 2001-02-20 2002-08-29 Rieter Ag Maschf Vorrichtung zum Öffnen und Reinigen von Fasergut
CN100383300C (zh) * 2005-03-22 2008-04-23 东华大学 精细化黄麻绒纤维专用刺辊齿条
DE102009032798A1 (de) * 2009-07-10 2011-01-13 Staedtler + Uhl Kg Kämmelement
CN113249830A (zh) * 2021-04-23 2021-08-13 毛思林 一种适用于生产无纺布的梳理机针布及其制备方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731676A (en) * 1952-11-10 1956-01-24 J W & H Platt Ltd Serrated wire or strip for use in carding engines and the like
US3081499A (en) * 1956-07-09 1963-03-19 Emil Shapiro Fiber integrating apparatus
GB944854A (en) * 1961-05-26 1963-12-18 Tmm Research Ltd Improvements in textile carding machines
DE1685615A1 (de) * 1966-06-22 1971-08-12 Tmm Research Ltd Trommel oder Abnehmer einer Karde und Saegezahndraht fuer deren oder dessen Beschlag
US3824650A (en) * 1968-04-19 1974-07-23 Nagoya Metallic Card Co Ltd Apparatus and process for transferring a fiber web
DE3501876A1 (de) * 1985-01-22 1986-07-24 Fritz 7347 Bad Überkingen Stahlecker Garnitur fuer eine aufloesewalze
US4606095A (en) * 1984-10-18 1986-08-19 Staedtler & Uhl Saw-toothed stamped metal part as outfit for a comb segment of a porcupine
DE3730297A1 (de) * 1987-09-10 1989-03-23 Fritz Stahlecker Garnitur fuer eine aufloesewalze
US5555714A (en) * 1993-06-03 1996-09-17 Rieter Elitex Combing roller
US5694759A (en) * 1996-03-08 1997-12-09 Waverly Mills, Inc. Process for producing polyester yarns on an open end spinning machine and yarns thus produced
EP1099783A1 (fr) * 1999-11-10 2001-05-16 Graf + Cie Ag Fil à dent de scie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036725B (de) * 1955-02-17 1958-08-14 Anton Hermanns Speisewalze fuer Karden oder Krempeln
JPS60252725A (ja) * 1984-05-25 1985-12-13 Nitto Eng Kk 梳綿機のウエブ剥離装置
CH678861A5 (fr) * 1988-08-24 1991-11-15 Graf & Co Ag
EP0894878A3 (fr) * 1997-07-30 2000-04-19 Maschinenfabrik Rieter Ag Nettoyeur de flocons

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731676A (en) * 1952-11-10 1956-01-24 J W & H Platt Ltd Serrated wire or strip for use in carding engines and the like
US3081499A (en) * 1956-07-09 1963-03-19 Emil Shapiro Fiber integrating apparatus
GB944854A (en) * 1961-05-26 1963-12-18 Tmm Research Ltd Improvements in textile carding machines
DE1685615A1 (de) * 1966-06-22 1971-08-12 Tmm Research Ltd Trommel oder Abnehmer einer Karde und Saegezahndraht fuer deren oder dessen Beschlag
US3824650A (en) * 1968-04-19 1974-07-23 Nagoya Metallic Card Co Ltd Apparatus and process for transferring a fiber web
US4606095A (en) * 1984-10-18 1986-08-19 Staedtler & Uhl Saw-toothed stamped metal part as outfit for a comb segment of a porcupine
DE3501876A1 (de) * 1985-01-22 1986-07-24 Fritz 7347 Bad Überkingen Stahlecker Garnitur fuer eine aufloesewalze
DE3730297A1 (de) * 1987-09-10 1989-03-23 Fritz Stahlecker Garnitur fuer eine aufloesewalze
US5555714A (en) * 1993-06-03 1996-09-17 Rieter Elitex Combing roller
US5694759A (en) * 1996-03-08 1997-12-09 Waverly Mills, Inc. Process for producing polyester yarns on an open end spinning machine and yarns thus produced
EP1099783A1 (fr) * 1999-11-10 2001-05-16 Graf + Cie Ag Fil à dent de scie

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DE50113877D1 (de) 2008-06-05
EP1176236A1 (fr) 2002-01-30

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