EP1740745B1 - Federvorrichtung für ein flexibelbogen - Google Patents

Federvorrichtung für ein flexibelbogen Download PDF

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Publication number
EP1740745B1
EP1740745B1 EP05714749A EP05714749A EP1740745B1 EP 1740745 B1 EP1740745 B1 EP 1740745B1 EP 05714749 A EP05714749 A EP 05714749A EP 05714749 A EP05714749 A EP 05714749A EP 1740745 B1 EP1740745 B1 EP 1740745B1
Authority
EP
European Patent Office
Prior art keywords
flexible bend
flexible
spring mechanism
spring
bend
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.)
Ceased
Application number
EP05714749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1740745A1 (de
Inventor
Emil Medvetchi
Roland Styner
Willi Sigg
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 EP1740745A1 publication Critical patent/EP1740745A1/de
Application granted granted Critical
Publication of EP1740745B1 publication Critical patent/EP1740745B1/de
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • 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
    • D01G15/28—Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements
    • D01G15/30—Bends

Definitions

  • the present invention relates to a spring device for a flexible bow of a revolving flat card.
  • the lid area together with the drum, forms the main carding zone and has as function the dissolution of the flakes into single fibers, removal of impurities and dust, elimination of very short fibers, the dissolution of nits and the parallelization of the fibers. Since the covers are added by dirt and fibers, it is necessary to clean them. Therefore, the revolving lid was developed with the lids held together by means of a chain or belt together to form an endless circulating band. One part is in direct use opposite the clothing of the drum and the remaining part is transported via deflection rollers in the supine position and can be cleaned and eventually sanded.
  • the covers slide into the working position, when the sets of drum and lid are arranged opposite each other, on arcuate strips, the u.
  • the carding nip is called.
  • the settings of the carding nip are in the range of 0.10 mm to 0.30 mm for cotton or up to 0.40 mm for manmade fibers in the case of a revolving flat card for the cotton spinning mill. Therefore, the precision of the revolving-flat elements, in particular of the flexible bend as such, and the adjustment of these elements to each other of very great importance. However, depending on the type of clothing selected, it may be necessary to have different initial settings of the flexible sheet in the range of up to 3 mm.
  • the range of settings requires that the elastic properties of the flexible bend allow this bending without reaching the plastic area.
  • the flexible sheets are usually cast from a special alloy, which has the necessary elasticity and can give way to the necessary shape.
  • the elastic range and the associated maximum deflection is not always sufficient for the desired adjustment bandwidth. This effect becomes even more severe with a smaller drum diameter of, for example, 1 m or less, since the same bending change increases the effective deflection.
  • it is advantageous that the sheet is freely movable at its end, both in the radial adjustment direction and in the circumferential direction. Possible fixations may obstruct or restrict the movement in the circumferential direction.
  • both radial adjustment directions are desired: for the enlargement of the carding gap, in the radial direction away from the center and for the reduction of the carding gap, in the radial direction in the direction of the center.
  • the flexible bend must be made to the smallest radius and can only be used for an increase in the radius. This limits the setting area. Overstretching the arch beyond the yield point can cause the arch to deform plastically and not return to its original state.
  • the invention is therefore based on the object to provide a device of the type described input, which avoids the disadvantages mentioned.
  • the elastic properties of the bow can be supported.
  • the spring force of the device is arranged such that the arc of the elastic region of the flexible bend is supported in at least one radial direction. In this way, a greater adjustment bandwidth can be achieved, preferably in the radial direction of the arc, which was hitherto covered only by the elastic region of the arc.
  • the spring device according to the invention was aligned in the direction of the center. A flexible bow with a spring device arranged in such a way, no longer needs to be made to the smallest radius, but can also be made to an average sheet setting. For the settings away from the center press the bearing surfaces of the Adjustment means the bow away, because for a reduction of the radius, the spring device of the arch takes over this function.
  • FIG. 1 shows a Wanderdeckelkarde, z.
  • the Rieter C60 card with a working width of 1.5 meters and a drum diameter of 1 meter. Fiber flakes are transported through transport channels (not shown) through the various cleaning process steps and finally fed into the cleaner shaft 9 of the card. Instead of a cleaners well, a normal hopper can be provided. This then passes the fiber flakes to the card as cotton wool.
  • the feed device feeds the fiber flakes to the lickerins 3.
  • the lickerins 3 open the fiber flakes and remove some of the dirt particles.
  • the last licker-in roller passes the fibers to the card drum 1.
  • the card drum 1 cooperates with the lids 6, thereby further parallelizing the fibers.
  • the lids are cleaned by a lid cleaning 8 and possibly reground by means of a grinding device. After the fibers have partly carried out several revolutions on the card drum, they are removed from the doffer roller 4 of the card drum, fed to the take-off rollers in the take-off area 5 and finally stored as a card sliver in a can in a pot (not shown).
  • the covers belong to a system of the revolving lid 2, thereby cover 6 are moved by means of an endless belt or a chain by means of a drive on the drum surface, usually against the direction of rotation of the drum.
  • the lids have at their ends Deckelendköpfe that slide directly or indirectly on the Flexibelbögen 7.
  • the underside of the covers are provided with a set, for example with sawtooth or flexible sets in the form of check mark.
  • the drum also has a set, the so-called SAge leopardgarnitur.
  • a towing lid set consists of around 70 -120 lids, of which only a part are in working position. The number of lids in working position depends inter alia on the diameter of the drum and on the convertible lid arrangement. On average, 20 to 46 lids are in working position.
  • Between the clothing of the drum and the lid is a gap called the carding nip.
  • This carding nip is normally set at a constant distance over the entire contact zone between the lid and the drum. However, the gap can also ⁇ ffnend - the carding gap is steadily larger - or closing - the carding gap is steadily smaller - to be set.
  • slits can be placed in the side of the arch, and gauges can be used to measure the distance between the lid and drum area.
  • FIG. 2 shows a first example of an inventive spring device for a flexible sheet 7.
  • the flexible sheet has in the middle means for adjusting 11, which are fixed to the sheet.
  • the adjustment points 10 at the outer ends of the sheets have only assigned means for adjusting, which have a support surface for the sheet.
  • these means can be set the bow only by pressing radially upwards, away from the center of the radius.
  • the adjustment to a smaller radius can take place without the spring device only by the elastic properties in a limited adjustment range, provided that the arc has been made to the smallest desired radius.
  • a spring device in the form of a leaf spring 12 is arranged under the bow, such that the spring force deforms the flexible bend in the radial direction to the center.
  • This spring device supports the radial adjustment in the direction of the center or completely takes over from the bow.
  • the spring is designed so that its force corresponds to the smallest desired radius.
  • the means for adjusting 10 and 11 For a radial movement away from the center operate the means for adjusting 10 and 11, the means exert only a pressure movement at the outer end of the sheet.
  • the way to the center works either mainly the elastic region of the flexible bend and / or the spring device 12.
  • the spring force of the leaf spring work in this example, especially at certain points directly to the ends of the bow, and are preferably above the bearing surface of the adjusting means 10 attached.
  • the spring is mounted in the center in such a way that it can not make any movement in the circumferential direction or in the radial direction independently of the adjusting means 11.
  • FIG. 3 shows a comparable example like FIG. 2 wherein the arc and the adjusting means are comparable to FIG. 2 , Individual springs 13 together form the spring device, which also exerts a selective spring force on the outer adjustment points 10. With a radial adjustment in the direction of the center, the individual springs pull the bow with.
  • FIG. 4 again shows a bow 7 and adjusting means 10,11, as under FIG. 2 described.
  • the spring device is now arranged such that a punctual distribution of forces does not result, but in such a way that the distribution of forces is uniformly distributed as a line load over the circumference of the arc in the circumferential direction.
  • This can be achieved, for example, by attaching a second material 14, on the side of the sheets 7, to support the elastic properties in the desired radial direction. See also the cross section in FIG. 4a ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Adjustable Resistors (AREA)
  • Details Of Indoor Wiring (AREA)
EP05714749A 2004-04-26 2005-04-12 Federvorrichtung für ein flexibelbogen Ceased EP1740745B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7572004 2004-04-26
PCT/CH2005/000207 WO2005103350A1 (de) 2004-04-26 2005-04-12 Federvorrichtung für ein flexibelbogen

Publications (2)

Publication Number Publication Date
EP1740745A1 EP1740745A1 (de) 2007-01-10
EP1740745B1 true EP1740745B1 (de) 2009-07-15

Family

ID=34963092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714749A Ceased EP1740745B1 (de) 2004-04-26 2005-04-12 Federvorrichtung für ein flexibelbogen

Country Status (5)

Country Link
EP (1) EP1740745B1 (zh)
CN (1) CN1946887B (zh)
BR (1) BRPI0510193A (zh)
DE (1) DE502005007705D1 (zh)
WO (1) WO2005103350A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH698689A2 (de) 2008-03-20 2009-09-30 Rieter Ag Maschf Flexibelbogen für eine Wanderdeckelkarde sowie Wanderdeckelkarde.
CH703250A1 (de) * 2010-06-02 2011-12-15 Rieter Ag Maschf Lagerung eines Flexibelbogens in einer Wanderdeckelkarde.
CN101984160B (zh) * 2010-10-21 2012-04-18 慈溪市益体模具塑料有限公司 一种梳棉机用盖板托环
CH713202A1 (de) * 2016-12-06 2018-06-15 Rieter Ag Maschf Flexibelbogen einer Karde.
DE102019110670A1 (de) * 2019-06-06 2020-12-10 TRüTZSCHLER GMBH & CO. KG Karde mit einem Wanderdeckel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037710A1 (de) * 2000-08-02 2002-02-14 Rieter Ag Maschf Vorrichtung zum Einstellen des Arbeitsspaltes zwischen den Spitzen von Deckelgarnituren und den Spitzen der Trommelgarnitur einer Karde
DE10106315A1 (de) * 2001-02-12 2002-08-29 Rieter Ag Maschf Verfahren zum Betrieb einer Karde sowie eine Karde

Also Published As

Publication number Publication date
WO2005103350A1 (de) 2005-11-03
CN1946887A (zh) 2007-04-11
BRPI0510193A (pt) 2007-10-02
DE502005007705D1 (de) 2009-08-27
CN1946887B (zh) 2010-09-29
EP1740745A1 (de) 2007-01-10

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