EP0336221B1 - Attachement pour chapeau de carde stationnaire - Google Patents

Attachement pour chapeau de carde stationnaire Download PDF

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Publication number
EP0336221B1
EP0336221B1 EP89105146A EP89105146A EP0336221B1 EP 0336221 B1 EP0336221 B1 EP 0336221B1 EP 89105146 A EP89105146 A EP 89105146A EP 89105146 A EP89105146 A EP 89105146A EP 0336221 B1 EP0336221 B1 EP 0336221B1
Authority
EP
European Patent Office
Prior art keywords
leg
fixing means
fixing
card top
previous
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
EP89105146A
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German (de)
English (en)
Other versions
EP0336221A2 (fr
EP0336221A3 (fr
Inventor
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 EP0336221A2 publication Critical patent/EP0336221A2/fr
Publication of EP0336221A3 publication Critical patent/EP0336221A3/fr
Application granted granted Critical
Publication of EP0336221B1 publication Critical patent/EP0336221B1/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
    • D01G15/24—Flats or like members

Definitions

  • the invention relates to a fastening for a stationary cover of a card with mounting flanges arranged on the end faces of the reel, which serve as supports for respective setting blocks, on which the ends of the cover are radially displaceable relative to the axis of rotation of the reel by means of respective adjusting devices, at the ends the cover brackets are provided to hold them on the associated setting block.
  • a fastening of this type is known from DE-AS 11 18 662.
  • This layout specification describes a certain type of stationary cover, which is intended as a replacement for the so-called revolving cover. In the context of this description, it is described, among other things, how the stationary lid is to be attached to the card.
  • Different types of fastening are specified in the layout specification, and in such a way that each of the rectangular lids is held at its four corners with respective fastening devices, which, presumably due to the adaptation to existing cards, are designed differently.
  • arcuate attachment parts which are referred to as spring bows, extend around the end faces of the card housing, although no suspension takes place.
  • the spring arches serve as a kind of mounting flange.
  • each cover is at its two ends, which protrude from the end faces of the drum and are attached to the spring arch.
  • receptacles are provided at the ends of the cover, which fit on adjusting blocks supported on the spring arch.
  • An adjusting screw extends through the end of the lid so that its tip engages the adjustment block.
  • a clamping screw the tip of which engages a thread of the adjusting screw, is tightened in order to ensure the adjustment.
  • This clip has two legs. A first leg extends in the radial direction and is rotatably attached to a radially adjustable arm via a pivot pin. The radial adjustment of the arm takes place in turn via a screw bolt which engages the card housing and is held in the set position by means of a nut.
  • the second leg of the clip extends at right angles to the first leg and engages with its free end in the groove mentioned.
  • the free end of the second leg covers the clamping screw, which means that the clamping screw is only accessible when the clip is out of engagement with the cover.
  • This arrangement is structurally complex and complex to carry out the adjustment work. It also leads to inaccuracy in the adjustment of the cover relative to the drum fitting. For example, the hold-down force of the clamp cannot be easily adjusted, which can also lead to an inaccuracy in the distance between the drum fitting and the cover. You have to make this setting either with the clip inserted, then loosen the clip, tighten the clamping screw and fasten the clip again, or you have to make the setting without clip, which is even more unfavorable, because the hold-down force of the clip can change the setting .
  • the object of the present invention is to find a fastening which, with a simple construction and easy handling, ensures positional stability in the circumferential and radial directions, but nevertheless allows expansion of the cover and also ensures that the holding-down force on the cover is within a predeterminable range remains.
  • each clamp is designed as a resilient element with a first leg attached to the associated fastening flange, extending in the radial direction and a second leg which is angled to the first leg and partially extends over the lid and engages on the latter is.
  • the design of the clip as a resilient element and by attaching the first leg of the clip to the mounting flange instead of a radially adjustable element ensures that the holding-down force of the clip is determined solely by the spring properties of the clip and the predetermined radial adjustment range of the cover.
  • the present invention is characterized preferably such that the second leg of each spring clip extends from the first leg over the respectively associated adjusting screw and has an opening which is at least substantially aligned with the screw.
  • This arrangement makes it possible to make the second leg longer compared to the prior art, which is desirable for the spring properties of the spring clip.
  • the adjusting screw can also be actuated through the opening, so that the adjustment work can be carried out with the spring clip already installed and the same hold-down force as during later operation of the card is already present during the adjustment.
  • each adjusting block can be clamped to the associated end of the cover by means of a clamping screw which extends at least substantially parallel to the axis of rotation and that the spring clip has a second opening in the first leg which is aligned with the clamping screw.
  • the clamping screw can also be actuated when the clamp is mounted, so that the setting can also be secured under operating conditions, ie with the spring clamp attached.
  • the use of a clamping screw, which clamps the adjusting block against the assigned end of the cover, is much more elegant than the use of a clamping screw, which presses against the adjusting screw, since the latter arrangement damages the thread of the adjusting screw and makes it difficult to readjust the distance between the sets.
  • the damaged screw can damage the lid itself, which is also undesirable.
  • the adjusting block is preferably guided in a guide of the cover extending in the radial direction and can be clamped against a wall limitation of the guide by means of the clamping screw.
  • the guide itself is a recess which is formed between an inner and an outer wall part of the cover, the clamping screw extending through an opening from the outer wall part delimiting the guide recess and clamping the adjusting block against this outer wall part in the tightened state.
  • Both the opening and the opening in the first leg are preferably designed as elongated holes in order to provide a sufficient adjustment range without the access to the clamping screw being impaired.
  • the first leg has at its free end an outwardly angled part which can be fastened to the fastening flange by means of a screw connection.
  • This fastening of the angled part of the first leg can be done in the simplest case directly on the fastening flange, or a fastening block can be screwed onto the fastening flange, the angled part then being screwable directly onto the fastening block.
  • the adjusting block is arranged to be displaceable in the axial direction on a guide extending parallel to the axis of rotation, this guide preferably being provided on the fastening flange or fastening block.
  • This guide which is only loaded by the predetermined load of the spring clip, creates the possibility that the lid can stretch in its longitudinal direction, e.g. under thermal stress, without this expansion leading to bending of the cover.
  • the spring clip does not stand in the way of such an expansion, since the free end of the second leg can move relative to the cover and even if this were not the case, an expansion only led to a slight bending of the first leg and the forces generated in this way remain within easily manageable limits.
  • the guidance of the adjusting block in the axial direction on the fastening flange or on the fastening block also ensures that the cover remains aligned with the axis of rotation of the drum. This is particularly important in arrangements where several relatively narrow strip-shaped covers are provided.
  • the spring clip is preferably in the form of a bent spring steel strip, whereby the necessary holes etc. can be punched.
  • the use of a curved spring steel strip enables the production of an inexpensive spring clip with precisely predeterminable spring properties.
  • the second leg forms an angle of less than 90 ° with the first leg in the unloaded state, preferably an angle in the range from 70 to 85 °, a larger angle of at least essentially 90 ° only in the inserted state is present.
  • the expected spring force can be determined by specifying this angle.
  • the angled part of the first leg of the spring clip preferably forms an angle with it of essentially 90 °, but preferably somewhat less, namely 88 °.
  • the end of the second leg facing away from the first leg is preferably bent in the direction of the axis of rotation, the bent end being in contact with the cover.
  • This bent version of the second leg ensures that the hold-down force is applied to the cover from a defined point on the spring clip, which means that the magnitude of this force can be determined precisely.
  • the bent end of the second leg is preferably fork-shaped, wherein it can grip around the stiffening rib and preferably press on the radially outer side of the stiffening rib.
  • a card 10 consists of a reel 11, which is mounted so as to be drivable about an axis of rotation 12, a housing 13 which covers the front ends of the reel, only the left housing part on the left end face of the reel in FIG. 1 and several stationary lids 14, again only one lid being shown in the sectional drawing according to FIG. 1.
  • the card 10 is provided with a revolving lid which extends over part of the circumference of the card, but is not important for the present invention and is therefore not shown.
  • the drum 11 carries in usual Way a spiked set 15, while the stationary cover on their underside facing the spiked set of the reel carry either a sawtooth set or a knife, this sawtooth set or these knives must have a precisely adjustable radial distance from the spiked set of the reel.
  • the stationary cover has the same design at its left and right ends and is adjustably attached to the card housing at these two ends. This attachment is described in more detail below.
  • the housing 13 has a fixed flange 18 which is part of the housing and extends in a ring around the axis of rotation of the spool.
  • a fastening block 19 is fastened to the fastening flange by means of screws 21 extending in the radial direction.
  • four stationary lids are attached to the block 19 and further, lid-carrying mounting blocks 19 ', 19' can be connected to the block 19 in the circumferential direction of the card.
  • Each cover 14 is pressed against the mounting flange at its two ends by means of a spring clip 22.
  • the two ends of the cover 14 are supported by the fastening block 19 and an adjusting block 23, the upper part of which is guided in a guide in the cover end 14 which extends in the radial direction.
  • Above the setting block 23 there is an adjusting screw 24 with a thread 25 which cooperates with a corresponding thread 26 in the end of the cover.
  • the end 27 of the adjusting screw 24 opposite the actuating head engages on the radially outer surface 28 of the adjusting block 23 and in this way supports the end of the cover, whereby by Rotation of the screw 24, the desired radial distance to the spike set of the reel can be adjusted.
  • a clamping screw 29 extends at right angles to the adjusting screw 24, i.e. parallel to the axis of rotation of the drum, and engages with its thread 31 in a corresponding internal thread 32 in the adjusting block 23.
  • a washer 33 is located below the actuating head 34 of the clamping screw 29, so that when the clamping screw 29 is tightened, the adjusting block 23 is pulled against the outer wall part 35 of the lid end and clamped. This fixes the set distance between the sets.
  • the spring clip 22 is shown in particular in FIGS. 3, 4 and 5.
  • the spring clip bent from a spring strip has a first leg 40 and a second leg 41, the leg 41 forming an angle of 80 ° with the first leg.
  • the first leg 40 has an angled part 43 which has a screw hole 44 with which the spring clip can be fastened to the fastening block 19 by means of a screw 45 (FIG. 1).
  • the angled part of the spring clip also has two further holes 46, which are provided for receiving dowels in order to fix the position of the spring clip on the mounting block 19 properly.
  • the second leg 41 also has at its end opposite the first leg an angled part 47 which is fork-shaped.
  • the first leg of the spring clip has an inverted T-shaped slot 54, the vertically extending part 55 of which forms an elongated hole through which the actuating head 34 of the clamping screw 29 can be reached.
  • the threaded part 31 of the clamping screw 29 extends through an opening, likewise formed as an elongated hole, in the outer side wall 35 of the cover end, so that the clamping screw 29 is effective over the entire adjustment range of the adjustment screw 24.
  • the head 34 of the clamping screw 29 also remains accessible over this entire adjustment range through the elongated hole 55, so that the clamping screw can be tightened when the clamping spring is installed.
  • the width of the elongated hole 55 is chosen to be the same size as the diameter of the head 34 of the clamping screw.
  • the position of the cover in the circumferential direction of the card is precisely specified by the clamp 22 and the clamping screw 29.
  • the clamp 22 and the clamping screw 29 also together form a guide which allows the cover to expand axially.
  • the bar of the T-shaped slot 54 forms two narrower regions 57 of the spring clip 22, which determine the flexibility of the spring clip in the axial direction. It is noteworthy that the spring force of the spring clip can be selected differently in the axial direction and in the radial direction by means of these regions 57, so that an optimal adaptation to the particular circumstances of the cover fastening can be achieved. In other words, the axial resistance of the spring clip can be selected so that it is significantly less than the radial one by specifically selecting the cross section of the regions 57 Resistance.
  • the axial power transmission from the cover 14 to the spring clip 22 takes place via the head of the adjusting screw 24.
  • the actuating head of the adjusting screw 24 extends through an opening 56 in the second leg of the spring clip, so that this screw can also be accessed and actuated when the spring clip is installed.
  • the adjusting block 23 has two spaced-apart, axially extending guide ribs 58 at each end of the cover, which are displaceable in the axial direction on the block 19.
  • the attachment of the stationary cover 14 of FIG. 1 takes place as follows. First, the fastening block 19 is screwed onto the fastening flange 18 by means of the screw 21. Thereafter, the stationary lid with the setting block 23 previously used is placed on the mounting block 19. The fork-shaped end of the spring clip is then placed over the stiffening rib of the cover 14 so that the actuating head of the adjusting screw 24 protrudes through the opening 56 of the spring clip or is at least accessible. Then screw 45 is inserted and tightened. During the tightening of the screw 45, the angle between the first and second legs of the spring clip changes from the initial value according to FIG. 5 to the operating value of 90 °, as shown in FIG. 1. As a result, the desired hold-down force is already generated on the stationary cover. The screw 45 therefore serves not only to hold the assembled spring clip, but also to tension the same.
  • the adjusting screw 24 is turned until the desired clothing distance is reached.
  • the clamping screw 29 is then tightened in order to secure the set position of the cover with respect to the drum.
  • the adjusting block 23 moves into the guide formed by the spring clip 22 and clamping screw 29, but the hold-down force remains constant, and the elasticity of the spring clip prevents forces being exerted on the cover, which could lead to deformation of the same. In other words, the length expansion of the cover is favored, but the fastening of the cover is nevertheless guaranteed without any problems.

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

Claims (16)

  1. Fixation pour un chapeau stationnaire (14) d'une carde (10) avec des flasques de fixation disposées sur les surfaces frontales du tambour (11), flasques qui servent d'appuis pour des blocs de réglage correspondants (23) sur lesquels les extrémités du chapeau (14) sont déplaçables radialement par rapport à l'axe de rotation du tambour (11), sur des dispositifs d'ajustement correspondants, et où des agrafes (22) sont prévues sur les extrémités de chapeau (14), afin de maintenir ceux-ci sur le bloc de réglage adjoint (23),
    caractérisée par le fait que
    chaque agrafe (22) est formée comme un élément élastique, avec une première branche (40) fixée à la flasque de fixation (18) adjointe et qui s'étend dans le sens radial, et une deuxième branche (41), pliée par rapport à la première branche et qui s'étend partiellement au-dessus du chapeau (14) en attaquant celui-ci.
  2. Fixation selon revendication 1, dans laquelle les dispositifs d'ajustement sont constitués chacun d'une vis (24) s'étendant au moins essentiellement d'une manière radiale, dont l'extrémité (27) radiale intérieure est appliquée sur le bloc de réglage (23) adjoint,
    caractérisée par le fait que
    la deuxième branche (41) de chaque agrafe élastique s'étend en s'éloignant de la première branche (40), au-dessus de chaque vis de réglage adjointe (24), et possède une ouverture (56) qui est au moins essentiellement alignée avec la vis (24).
  3. Fixation selon revendication 1 ou 2,
    caractérisée par le fait que
    chaque bloc de réglage (23) peut être serré sur l'extrémité adjointe du chapeau (14) à l'aide d'une vis de serrage (29) s'étendant au moins essentiellement d'une manière parallèle à l'axe de rotation (12), et que l'agrafe élastique (22) possède une deuxième ouverture (54) dans la première branche (40), qui est alignée avec la vis de serrage (29).
  4. Fixation selon revendication 3,
    caractérisée par le fait que
    le bloc de réglage (23) est guidé dans un guidage du chapeau (14) s'étendant dans le sens radial, et qui peut être serré, à l'aide de la vis de serrage (29), contre une paroi de limitation (35) de ce guidage.
  5. Fixation selon revendication 4,
    caractérisée par le fait que
    le guidage est une cavité qui est formée entre une partie de paroi intérieure et une partie de paroi extérieure (35) du chapeau (14), que la vis de serrage (29) s'étend à travers une trouée pratiquée dans la partie de paroi extérieure (35) qui délimite la cavité de guidage et qu'elle bloque le bloc de réglage (23) contre cette partie de paroi extérieure (35) lorsqu'elle est serrée.
  6. Fixation selon revendication 5,
    caractérisée par le fait que
    la trouée ainsi que l'ouverture (54), pratiquées dans la première branche (40), sont formées comme trous oblongs.
  7. Fixation selon l'une des revendicatiosn précédentes,
    caractérisée par le fait que
    la première branche possède sur son extrémité libre une partie (43) pliée vers l'extérieur, qui peut être fixée sur la flasque de fixation (18) à l'aide d'une liaison à vis (41).
  8. Fixation selon revendication 7,
    caractérisée par le fait que
    la partie pliée (43) de la première branche peut être fixée directement sur la flasque de fixation (18).
  9. Fixation selon revendication 7,
    caractérisée par le fait
    qu'un bloc de fixation (19) est vissé sur la flasque de fixation (18), et que la partie pliée (43) peut être vissée directement sur le bloc de fixation (19).
  10. Fixation selon l'une des revendications précédentes 3 à 9,
    caractérisée par le fait que
    la vis de serrage (29) respectivement sa tête (34) et l'ouverture dans la première branche (40) forment ensemble un guidage pour les mouvements axiaux, particulièrement les prolongations du chapeau (14).
  11. Fixation selon l'une des revendications précédentes,
    caractérisée par le fait que
    l'agrafe élastique (22) est une languette courbée en acier ressort.
  12. Fixation selon l'une des revendications précédentes,
    caractérisée par le fait que,
    à l'état non chargé, la deuxième branche (41) forme avec la première branche (40) un angle de moins de 90°, de préférence un angle compris dans la zone de 70 à 85°, et que, à l'état chargé, elles forment en principe un angle plus grand d'au moins 90°.
  13. Fixation selon l'une des revendications précédentes,
    caractérisée par le fait que
    la partie pliée (43) de la première branche (40) de l'agrafe élastique (22) forme avec celle-ci un angle qui est en principe de 90°, de préférence d'environ 88°.
  14. Fixation selon l'une des revendications précédentes,
    caractérisée par le fait que
    l'extrémité de la deuxième branche (41) qui s'éloigne de la première branche (40) est pliée dans le sens se dirigeant vers l'axe de rotation, et que l'extrémité pliée (47) se trouve en contact avec le chapeau (14).
  15. Fixation selon revendication 14,
    caractérisée par le fait que
    le chapeau (14) possède une nervure de rigidité (51) dirigée radialement vers l'extérieur et parallèlement à l'axe de rotation, et que l'extrémité pliée (47) de la deuxième branche (41) est formée comme une fourche qui enveloppe cette nervure de rigidité (51) et presse de préférence sur le côté radial extérieur de la nervure de rigidité (51).
  16. Fixation selon l'une des revendications précédentes,
    caractérisée par le fait que
    la première branche de l'agrafe élastique possède une fente (54), particulièrement une fente ayant une forme de T renversé, qui détermine la section (57) de cette branche et par conséquent ses caractéristiques élastiques dans le sens axial.
EP89105146A 1988-04-07 1989-03-22 Attachement pour chapeau de carde stationnaire Expired - Lifetime EP0336221B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811679 1988-04-07
DE3811679A DE3811679A1 (de) 1988-04-07 1988-04-07 Befestigung fuer einen stationaeren deckel einer karde

Publications (3)

Publication Number Publication Date
EP0336221A2 EP0336221A2 (fr) 1989-10-11
EP0336221A3 EP0336221A3 (fr) 1991-09-11
EP0336221B1 true EP0336221B1 (fr) 1993-11-18

Family

ID=6351559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105146A Expired - Lifetime EP0336221B1 (fr) 1988-04-07 1989-03-22 Attachement pour chapeau de carde stationnaire

Country Status (4)

Country Link
US (1) US4947522A (fr)
EP (1) EP0336221B1 (fr)
JP (1) JPH0274625A (fr)
DE (2) DE3811679A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835776A1 (de) * 1988-10-20 1990-04-26 Rieter Ag Maschf Karde mit modularer unterteilung der kardierzonen
US5005260A (en) * 1988-11-30 1991-04-09 Kanai Juyo Kogyo Company, Limited Stationary flat, top bar and carding engine
CH681230A5 (fr) 1989-12-04 1993-02-15 Rieter Ag Maschf
JPH0442955U (fr) * 1990-08-08 1992-04-13
US5090092A (en) * 1990-08-31 1992-02-25 John D. Hollingsworth On Wheels, Inc. Carding flat assembly
DE4235610C2 (de) * 1992-10-22 2002-07-18 Truetzschler Gmbh & Co Kg Vorrichtung an einer Spinnereivorbereitungsmaschine, z. B. Karde, Reiniger o. dgl., zur Messung von Abständen an Garnituren
US5685047A (en) * 1993-03-30 1997-11-11 Maschinenfabrik Rieter Ag Apparatus for attaching working elements
DE19809330B4 (de) * 1998-03-05 2009-05-07 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde, bei der einer Walze, z. B. Trommel, mindestens ein ortsfestes Kardiersegment zugeordnet ist
WO2004106603A1 (fr) * 2003-06-03 2004-12-09 Maschinenfabrik Rieter Ag Surface d'appui et element d'appui
WO2006098169A1 (fr) * 2005-03-17 2006-09-21 Kabushiki Kaisha Yaskawa Denki Roulement a rouleaux a lubrification solide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628830A (en) * 1899-05-02 1899-07-11 Saco & Pettee Machine Shops End clip for card-flats.
US2879549A (en) * 1957-01-03 1959-03-31 August L Miller Carding apparatus
US3402432A (en) * 1966-05-13 1968-09-24 Johnson & Johnson Carding apparatus
PL99590B1 (pl) * 1974-10-25 1978-07-31 Zespol nieruchomych plyt zgrzeblacych
US4286357A (en) * 1977-08-15 1981-09-01 John D. Hollingsworth On Wheels, Inc. Card cylinder shroud, flat mounting and bearing assembly
IT1201259B (it) * 1985-03-21 1989-01-27 Marcello Giuliani Carda a capelli fissi con cedimento elastico e registrazione di inclinazione

Also Published As

Publication number Publication date
EP0336221A2 (fr) 1989-10-11
JPH0274625A (ja) 1990-03-14
US4947522A (en) 1990-08-14
DE3811679A1 (de) 1989-10-19
DE58906188D1 (de) 1993-12-23
EP0336221A3 (fr) 1991-09-11

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