EP0336222A2 - Couteau nettoyeur à monter sur un chapeau de carde - Google Patents

Couteau nettoyeur à monter sur un chapeau de carde Download PDF

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Publication number
EP0336222A2
EP0336222A2 EP89105147A EP89105147A EP0336222A2 EP 0336222 A2 EP0336222 A2 EP 0336222A2 EP 89105147 A EP89105147 A EP 89105147A EP 89105147 A EP89105147 A EP 89105147A EP 0336222 A2 EP0336222 A2 EP 0336222A2
Authority
EP
European Patent Office
Prior art keywords
support
profile
knife
knife according
steel profile
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Withdrawn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
EP89105147A
Other languages
German (de)
English (en)
Other versions
EP0336222A3 (fr
Inventor
Robert Demuth
Urs Staehli
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 EP0336222A2 publication Critical patent/EP0336222A2/fr
Publication of EP0336222A3 publication Critical patent/EP0336222A3/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Withdrawn legal-status Critical Current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
    • D01G15/34—Grids; Dirt knives; Angle blades
    • 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
    • D01G15/24—Flats or like members

Definitions

  • the present invention relates to a shell knife for mounting on a cover of a card in a position transverse to and opposite to the carding direction.
  • a well-known peeling knife is a solid, relatively thick piece of steel, on one long side of which a knife edge is incorporated. On the opposite long side, the knife is very solid and forms a mounting flange that is attached to the cover by means of screw connections.
  • lids equipped with knives can be installed mainly as stationary lids at various points on a card.
  • they can be arranged immediately after the feed roller below the licker-in and opposite it, or in the pre-carding area between the licker-in and the revolving cover opposite the drum. It is also possible to place such stationary covers between the revolving cover and the take-off roller opposite the drum.
  • the well-known massive knife requires a relatively large circumferential extension around the assigned rotating body (i.e. around the licker-in or drum), whereby this space would have been available for other purposes or if the space available was larger, the liner or drum diameter should be made smaller would.
  • the object of the present invention is to provide a bowl knife of the type mentioned, which is inexpensive to manufacture with a compact design and takes up little space, is easy to assemble and replace, but at least in its function brings comparable results as the massive bowl knife.
  • the invention provides that a steel profile is provided for the peeling knife, which is kept in a form-fitting and attachable to the cover support by permanent plastic deformation of this support form-fitting and slip-free, the longitudinal direction of the support profile also transverse to Carding direction is.
  • the knife edge can only be ground after the steel profile has been inserted into the support.
  • the support forms a suitable holder for the comparatively unprocessed steel profile according to the invention, which is used both when sharpening the knife edge and also during the final assembly of the bowl knife on the cover.
  • the support which is designed as a profile, is also inexpensive to manufacture.
  • the plastic deformation of the support profile around the steel profile in order to hold it positively and without slip in the operating position can be done with relatively simple means, for example by means of a pressure roller which moves along the support profile and deforms it.
  • the deformation is preferably carried out in the cold state, since this enables the steel profile in the support to be received in a very resistant, form-fitting manner by the cold flow of the metallic support. This means that the support material is forged around the steel profile, so to speak.
  • the support profile can and should be designed to be somewhat flexible, so that the shell knife only reaches its end position when the support is mounted on the relatively stiff, very precisely machined cover.
  • the accuracy of the shape of the cover guarantees the accuracy of the position of the knife edge, which is particularly important when taking into account the very narrow tolerances and distances that are common with cards.
  • the flexibility of the support with a steel knife means that there is no significant transfer of forces to the flat rod, so that there is no deformation of the flat rod and therefore no deterioration in the accuracy of the flat rod as a result of the fastening of the working element.
  • the support designed as a profile preferably serves at the same time as a carrier for known scratch fittings, e.g. in the form of a sawtooth set or a spiked set. In this way, little space is required to accommodate the relatively small steel profile. Examples of suitable sawtooth sets or spiked sets that can be used with the bowl knife according to the invention or its support can be found in the Swiss patent specification 662 824 or the GDR patent specification 225 599.
  • the support designed as a profile preferably consists of an aluminum alloy. In this way, an overall lightweight construction is achieved and the support can be designed as an extrusion, but at the same time have the properties that are required for forging the extrusion around the steel profile.
  • the steel profile preferably has the shape of a rectangle in cross section, in which one edge is removed to form a pointed knife edge and an oblique surface on the steel profile.
  • Such a steel profile can be produced very cheaply with good knife properties by rolling, without the need for expensive machining, except when sharpening the actual knife edge.
  • the inclined surface preferably intersects with the long side of the rectangle opposite the knife edge along a line extending in the longitudinal direction of the steel profile such that the remaining remainder of the long side of the rectangular cross section has a length of less than half the length of the full long side.
  • the sloping surface can either merge directly or via a step into the long side of the rectangle opposite the knife edge.
  • the support designed as a profile preferably has an overall approximately rectangular shape in outline, the longitudinal side of the support profile facing away from the cover being either at least essentially flat or designed to accommodate a scraper fitting.
  • the short side of the support profile which is designed to receive the steel profile and points against the carding direction, has a groove with a U-shaped cross section that is aligned with the back angle of the shell knife.
  • the knife blade i.e. the steel profile is received in this U-shaped groove, with its knife edge protruding beyond the outline of the support profile.
  • the leg of the support profile which is formed by the U-shaped groove and which is adjacent to the front surface of the knife blade is plastically deformed in such a way that it partially bears on the inclined surface of the steel profile or on the transition step of the steel profile, in this way the form-fitting receptacle for the steel profile.
  • the side of the leg facing away from the front of the knife blade is formed by an at least substantially V-shaped groove in the support.
  • the aforementioned leg can be formed with a substantially constant thickness and can be sufficiently shaped around the rear part of the steel profile opposite the knife edge.
  • a closed chamber is preferably formed in the support profile behind the area containing the U-shaped groove, this chamber preferably being similar in cross section to an inverted "B".
  • the shell knife viewed in the carding direction, can be provided with a V-shaped groove behind the area of the support containing the U-shaped groove, one side of which is at least substantially parallel to the bottom of the steel profile receiving U-shaped groove.
  • the support profile preferably has a T-shaped recess, the bar of which runs parallel to the long side of the support, which is rectangular in outline, and whose vertical leg opens out on the side of the support profile facing the cover.
  • This T-shaped chamber is separated by a web from the chamber or V-shaped groove provided behind the steel profile.
  • a further chamber is located on the side of the T-shaped chamber facing away from the knife blade and is at least essentially L-shaped, the vertical leg of the L-shaped chamber on the side of the support facing the cover opens and is separated from the T-shaped chamber by a web.
  • Fig. 1 shows a cross section through a support 10, which has been produced as a profile by extrusion of an aluminum alloy.
  • This support 10 has a U-shaped groove 11 into which a steel profile 12, which forms the actual knife blade, is inserted.
  • the leg 13 of the support profile 10 is bent downward and plastically deformed so that it assumes the position 13 'in which it rests on the inclined surface 14 of the steel profile 12 and together with the other boundary walls the U-shaped groove 11 forms a positive receptacle for the steel profile.
  • the steel profile has the shape of a rectangle in cross section from which one corner is removed to form the inclined surface 14.
  • the support profile 10 has a plurality of grooves or chambers in order to save weight, facilitate the extrusion process and enable attachment to the associated stationary cover of a card.
  • the bowl knife can be arranged via the assigned support 10 either after the feed roller 15 and below the licker-in 16 or between the licker-in 16 and the traveling cover 17 opposite the drum 18.
  • the attachment of the shell knife in the postcard area between the revolving cover 17 and the take-up or doffer roller 19 could also be considered.
  • the support can be attached to the associated cover (s) 20 in a manner known per se, for which purpose the V-shaped groove 22 above the steel profile, seen in the carding direction K, T-shaped chamber 23 arranged behind the steel profile 12 and the L-shaped chamber 24 located behind the T-shaped chamber 23 are useful.
  • the V-shaped groove 22 is not only used to attach the support but is also decisive for the shape of the leg 13 and at the same time provides access to the leg 13, so that the shaping of this leg can be carried out easily via the inclined surface 14 of the steel profile.
  • the vertical leg 26 of the inverted T-shaped chamber 23 and the vertical leg 27 of the L-shaped chamber 24 open on the side 28 of the support facing the cover 10.
  • the thickness of the individual webs and wall parts of the support 10 is at least essentially constant, which benefits the production of the profile by extrusion.
  • the length of the support is 10, i.e. in a direction perpendicular to the plane of the drawing, 1014 mm.
  • the steel profile 12 has the same length.
  • the width of the support 10 in the left to right direction in the drawing is 34 mm, the thickness, i.e. the height from top to bottom in Fig. 1, however, 9 mm.
  • the wall thickness of the webs and wall parts is 1.25 mm.
  • the essential dimensions of the steel profile are marked in Fig. 1 with the letters a, b, c, d and e and are 2.5, 2.5, 2.0, 10 and 4.0 mm.
  • the tip angle ⁇ between the front and the back of the knife tip 29 is 18 ° and the back angle ⁇ of the steel profile in the position used is 60 °.
  • FIG. 2 shows a somewhat modified embodiment, only those parts that differ from FIG. 1 being described in more detail.
  • 2 is the same as in FIG. 1, but has been inserted into the support with a steeper back angle of 45 °, so that the corresponding groove 11 also has a steeper angle with the side 31 of the support 10 facing the card forms.
  • the dimension c is also 2 mm in this version.
  • the depth of the V-shaped groove 22 is somewhat less than in the embodiment according to FIG. 1, but the leg 13 is somewhat longer. This provides somewhat better access for a roller 34 rotatable about the axis 33, the surface 35 of which conforms to the shape of the outer surface 36 of the Leg 13 is adjusted.
  • the roller 34 rotating about the axis 33 is pressed in the arrow direction 37 against the surface 36 of the leg 13.
  • a roller 38 arranged below the support 10 is pressed in the direction of arrow 39 against the underside of the support or the steel profile 12, the surface 41 of the roller 38 being complementary to the contacting surfaces 31 of the support and 42 of the steel profile. Since the rollers 34 and 38 are pressed with a high force in the direction 37 and 39, the material of the support 10 flows coldly around the steel profile, so that it is held in a form-fitting and slip-free manner.
  • rollers 34 and 38 rotate relatively slowly about the respective axes of rotation 33 and 43, respectively, and the support 10 is moved in a direction perpendicular to the plane of FIG. 2 at a speed which is essentially the surface speed of the rollers 34 and 38 corresponds.
  • the V-shaped groove 25 is omitted in the embodiment according to FIG. 2.
  • a chamber 44 in the support 10 is provided between the steel profile 12 and the T-shaped chamber 23, this chamber 44 being reversed in cross section B-shaped.
  • the resulting nose 45 forms a wall with an essentially constant thickness around the edge 46 of the steel profile.
  • the embodiment according to FIG. 3 is also somewhat modified compared to the embodiment according to FIG. 2. Only the different features are described here.
  • the steel profile is designed somewhat differently in this embodiment, so that the angle ⁇ is smaller by 10 ° than in the steel profile of FIGS. 1 and 2. This leads to the inclined surface 14 having a Level 47 merges into the top 48 of the steel profile.
  • the back angle ⁇ is 45 °, as in the embodiment in FIG. 2.
  • the dimensions of the steel profile correspond in other respects to the dimensions of the steel profile of FIG. 2.
  • the V-shaped chamber 22 is omitted in this embodiment, but can also be provided. Furthermore, the chamber 44 has a somewhat more angular shape.
  • FIG. 4 shows a particularly preferred embodiment in which the steel profile 12 with a saw tooth set 49 is arranged in one and the same support 10.
  • the steel profile 12 corresponds completely to the embodiment according to FIG. 3 and the support 10 has only been slightly modified from the embodiment according to FIG. 3 in order to accommodate the strip-shaped sawtooth inserts 49, only one of which can be seen in FIG. 4.
  • This embodiment has the advantage that it is particularly space-saving and also excellently supports the knife edge of the steel profile 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP19890105147 1988-04-07 1989-03-22 Couteau nettoyeur à monter sur un chapeau de carde Withdrawn EP0336222A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811681 1988-04-07
DE3811681A DE3811681A1 (de) 1988-04-07 1988-04-07 Schalenmesser zur montage an einen deckel einer karde

Publications (2)

Publication Number Publication Date
EP0336222A2 true EP0336222A2 (fr) 1989-10-11
EP0336222A3 EP0336222A3 (fr) 1991-09-25

Family

ID=6351560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890105147 Withdrawn EP0336222A3 (fr) 1988-04-07 1989-03-22 Couteau nettoyeur à monter sur un chapeau de carde

Country Status (4)

Country Link
US (1) US4974295A (fr)
EP (1) EP0336222A3 (fr)
JP (1) JPH01306623A (fr)
DE (1) DE3811681A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236543A (en) * 1989-10-04 1991-04-10 Carclo Eng Group Plc Flats for a carding machine
GB2245907A (en) * 1989-01-26 1992-01-15 Truetzschler & Co Improvements in or relating to a textile machine such as a carding machine or a cleaning machine
EP0638672A1 (fr) * 1993-08-04 1995-02-15 Graf + Cie Ag Kratzen- Und Maschinenfabrik Garniture pour chapeaux d'une machine de cardage de laine
EP0974687A1 (fr) * 1998-07-18 2000-01-26 WM. R. STEWART & SONS (HACKLEMAKERS) LIMITED Appareil pour le traitement de fibres
CN110936154A (zh) * 2019-12-27 2020-03-31 上海工程技术大学 一种用于精梳机齿片的自动装配装置及控制方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1298832B1 (it) * 1998-03-24 2000-02-04 Marzoli & C Spa Elemento cardante fisso e registrabile per macchine di apertura o cardatura di materiale tessile
DE10112301A1 (de) * 2001-03-14 2002-10-24 Graf & Co Ag Vorrichtung zum Bearbeiten von Textilfasern
DE102006003958B4 (de) * 2006-01-26 2020-10-08 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde für Baumwolle, Chemiefasern o. dgl. mit einem Kardierelement
DE102006045047A1 (de) 2006-09-21 2008-03-27 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o. dgl., bei der eine garnierte, schnellrotierende Walze mindestens einem garnierten Bauteil in einem Abstand gegenüberliegt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162559A (en) * 1977-10-06 1979-07-31 Wm. R. Stewart & Sons (Hacklemakers) Limited Carding apparatus
GB2032478A (en) * 1978-10-23 1980-05-08 Hollingsworth Gmbh Dirt separator
GB2083848A (en) * 1980-09-10 1982-03-31 Hollingsworth Gmbh Dirt knives
EP0067600A1 (fr) * 1981-06-13 1982-12-22 Carclo Engineering Group P.L.C. Elements de cardage revêtus pour machines textiles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US205805A (en) * 1878-07-09 Improvement in clearing attachments for carding-machines
FR1293016A (fr) * 1961-03-25 1962-05-11 Perfectionnements aux briseurs de machines textiles
ES235283Y (es) * 1978-04-11 1978-12-16 Barcons Estebanell Juan Dispositivo abridor limpiador peinador perfeccionado.
SE432449B (sv) * 1980-05-14 1984-04-02 Keijo Silander Forfarande vid en kardmaskin for bomull och anordning for forfarandets genomforande
DD225599A3 (de) * 1982-12-30 1985-07-31 Textima Veb K Garnitur fuer kardiersegmente an karden
CH659832A5 (de) * 1983-07-15 1987-02-27 Graf & Co Ag Kratzenbeschlag fuer deckel einer krempelmaschine.
EP0138778B1 (fr) * 1983-10-05 1991-09-11 Marcello Giuliani Carde à chapeaux pourvue d'éléments auto-nettoyants en forme de lame ou de peigne
US4654933A (en) * 1983-12-28 1987-04-07 James L. Horn Gin lint cleaner with fiber return
CH662824A5 (de) * 1984-02-14 1987-10-30 Graf & Co Ag Kardiersegment.
DE3702688C2 (de) * 1986-01-31 1995-02-23 Graphia Gundlach Gmbh Hans Verkaufskarton
DE3702588C2 (de) * 1986-04-22 1998-05-28 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde, Reinigungsmaschine o. dgl. für Baumwollfasern mit mindestens einem einer Walze zugeordneten Ausscheidemesser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162559A (en) * 1977-10-06 1979-07-31 Wm. R. Stewart & Sons (Hacklemakers) Limited Carding apparatus
GB2032478A (en) * 1978-10-23 1980-05-08 Hollingsworth Gmbh Dirt separator
GB2083848A (en) * 1980-09-10 1982-03-31 Hollingsworth Gmbh Dirt knives
EP0067600A1 (fr) * 1981-06-13 1982-12-22 Carclo Engineering Group P.L.C. Elements de cardage revêtus pour machines textiles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245907A (en) * 1989-01-26 1992-01-15 Truetzschler & Co Improvements in or relating to a textile machine such as a carding machine or a cleaning machine
GB2245907B (en) * 1989-01-26 1992-12-02 Truetzschler Gmbh & Co Kg Improvements in or relating to a textile machine such as a discarding machine or a cleaning machine
GB2236543A (en) * 1989-10-04 1991-04-10 Carclo Eng Group Plc Flats for a carding machine
EP0638672A1 (fr) * 1993-08-04 1995-02-15 Graf + Cie Ag Kratzen- Und Maschinenfabrik Garniture pour chapeaux d'une machine de cardage de laine
US5467505A (en) * 1993-08-04 1995-11-21 Graf + Cie Ag Kratzen- Und Maschinenfabrik Card clothing for a carding machine
EP0974687A1 (fr) * 1998-07-18 2000-01-26 WM. R. STEWART & SONS (HACKLEMAKERS) LIMITED Appareil pour le traitement de fibres
CN110936154A (zh) * 2019-12-27 2020-03-31 上海工程技术大学 一种用于精梳机齿片的自动装配装置及控制方法

Also Published As

Publication number Publication date
JPH01306623A (ja) 1989-12-11
DE3811681A1 (de) 1989-10-19
US4974295A (en) 1990-12-04
EP0336222A3 (fr) 1991-09-25

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