EP1362134A1 - Pince pour bandes de garniture - Google Patents

Pince pour bandes de garniture

Info

Publication number
EP1362134A1
EP1362134A1 EP02711734A EP02711734A EP1362134A1 EP 1362134 A1 EP1362134 A1 EP 1362134A1 EP 02711734 A EP02711734 A EP 02711734A EP 02711734 A EP02711734 A EP 02711734A EP 1362134 A1 EP1362134 A1 EP 1362134A1
Authority
EP
European Patent Office
Prior art keywords
fastening means
flat
fastening
light metal
flat bars
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.)
Granted
Application number
EP02711734A
Other languages
German (de)
English (en)
Other versions
EP1362134B1 (fr
Inventor
Jürg BISCHOFBERGER
Hans-Rudolf LÖRTSCHER
Peter Gujer
Christian Sauter
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 EP1362134A1 publication Critical patent/EP1362134A1/fr
Application granted granted Critical
Publication of EP1362134B1 publication Critical patent/EP1362134B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • D01G15/92—Attaching card clothing to carding elements

Definitions

  • the present invention relates to fastening means, in particular to form-fitting fastening means, such as clips, for fastening clothing strips to flat bars.
  • Modern textile processing machines are equipped with different carding segments depending on the process level within the machine.
  • the carding segments of the card include, in particular, the stationary carding segments or carding rods in the pre-carding and in the postcarding zone and the carding segments in the cover, the so-called stationary carding rods or the traveling flat rods.
  • Most cards nowadays are equipped with revolving flat aggregates, ie they have revolving flat bars. Cards with stationary lids and correspondingly stationary flat bars are less common. With cards, it is common today to equip the flat or revolving flat bars with so-called clothing strips.
  • the clothing strips are equipped with flexible or semi-rigid fittings, which differ from all-steel fittings or sawtooth fittings in that they are embedded or punched individually or as U-shaped double hooks in strip-shaped, more or less elastic fabric and plastic layers.
  • the clothing strips are fastened to the carding rods of the carding segments with fastening means, so-called clips or clothing strip clips.
  • clips from the prior art are shown for example in the documents US 5755O12, US 5'898'978 and DE 513728. Such an arrangement is also shown in FIG. 1, for example.
  • the clips 1 are made of sheet metal or steel and have the advantage that they simplify the attachment and replacement of the clothing strips 2 on the flat bars 3.
  • the clips 1 have the function of clamping the clothing strips 2 onto the flat bars 3.
  • the clips are used in pairs, so that such a clip ensures the appropriate clamping on both sides of the flat bar, see FIG. 1.
  • the clips have teeth 4 on one side, these are inserted or stamped into the clothing strips 2 (in Figure 1 shown in dashed lines). These teeth go through a positive locking binding with the clothing strip.
  • the other side 5 of the clips is pressed around the rib 6 of the flat bar 3 using a suitable tool. As a result, the clips 1 clamp the clothing strips 2 to the flat bar 3 over its entire length. This type of fastening has proven itself in the past.
  • the clips can be easily attached to the flat bars using a suitable tool and can also be easily removed from there.
  • the carding bars and in particular the flat bars for the card were previously made of - mostly T-shaped - cast iron. Recently, however, these have also been produced as hollow profiles (extruded profiles) made of light metal or light metal alloys (e.g. flat bar 3 from FIG. 1). Aluminum is often used as the material for the production.
  • the carding segments work together with rotating rollers, including the flat bars, which work with the card's reel.
  • the carding bars or flat bars must be slightly longer than the working width of the card so that they rest on the adjustable flexible sheets to the left and right of the reel and can be transprotected (or can be attached to them with stationary flat bars). Due to their carding work, the flat bars are exposed to relatively high mechanical loads (thrust forces). They must therefore have a high level of stability or rigidity so that they do not bend or deform during use.
  • the carding quality and thus the quality of the card sliver produced essentially depends on the set carding gap (distance between the set of flat bars and the set of reel).
  • This carding gap is set today in the range of tenths of a millimeter. As a rule, it is between 0.2 and 0.3 mm, depending on the fiber material processed and the desired carding quality. It can be observed that the tendency in the spinning mills is to set the carding gap ever narrower. Carding gap settings of 0.15 mm are currently the extreme case, such narrow settings should be requested more and more frequently by spinning mills in the future. The exact setting of the carding gap is therefore very important.
  • the carding gap can be set constantly over the entire working area in which carding is carried out. Ie the Carding gap must be set precisely over the entire length of the flat bars and over the entire lid area (ie for all flat bars one behind the other in the working area).
  • the narrower the carding gap is chosen the more difficult it is to set and keep constant.
  • the carding gap is set or checked when the card is at a standstill with the help of sheet gauges. As a rule, this adjustment is carried out once after each adjustment of the card's lids, for example after maintenance (replacing the lids) or when changing the range (new fiber material to be processed often requires a different carding gap setting).
  • the lids are always set when the machine is "cold", ie at a normal ambient temperature, which, depending on the location of the spinning mill, can be between 20 and 30 degrees Celsius.
  • the operating temperatures on the lattice bars may vary after air conditioning, between 20 degrees Celsius (when the machine is running in) and 40 degrees Celsius (when the machine is warm and the air conditioning in the spinning mill is poor) It goes without saying that the carding gap should always be kept at the desired value even with these temperature fluctuations However, the narrower the carding gap has to be set, the more sensitive the carding process reacts to changes in this distance.
  • the flat bars have been made of light metal, in particular aluminum, or of light metal alloys as extruded hollow profiles using the extrusion process (see FIG. 1).
  • Such flat bars are provided at both ends with massive end head parts. Examples of such flat bars can be found in the documents DE 43 04 148 A1, EP 627 507 B1 or US-A-4827573.
  • the end head parts are usually positively connected to the aluminum profile and have a machined support surface that slides on the card's sliding guides (flexible bend) with dimensional accuracy and low friction.
  • the end head parts are also connected to the drive elements of the lid assembly, for example to a drive chain or a drive belt.
  • This construction shows Cast rods have a number of advantages. In particular, they are easier and cheaper to manufacture.
  • the object of the present invention is therefore to avoid the bending of the flat bars.
  • the light metal or the light metal alloy of the flat bars has a higher coefficient of linear expansion or thermal expansion than the sheet or steel from which the clip is made.
  • the commercially available clips therefore consist of a material (sheet metal or steel) that has a too high modulus of elasticity for light metal flat bars, ie they are not very elastic. In particular, they are far less elastic than the flat bars.
  • the clips also have a high degree of rigidity in terms of construction (primarily due to the selected wall thickness). When installed, the clips are high Clamping force and are, in practical terms, inelastic.
  • the wall thickness of commercially available clips is at least 0.5 mm.
  • the clothing strips are positively attached (“clipped") to the flat bar at room temperature with the help of the clips and a suitable tool.
  • the flat bars are then checked for accuracy with the clothing. If necessary, the clothing tips are reground (by a few hundredths of a millimeter) The distance between the sliding surfaces of the flat end heads and the area defined by the clothing tips has a precisely predetermined value. This check is carried out in the spinning mills at ambient temperature and is done so that the carding gap can be adjusted precisely.
  • the flat bars with the attached clips and clothing strips are then installed in the card, which is at ambient temperature, and if the card becomes warm through its operation, the cover rods also heat up, with the result that they expand (or attempt to expand).
  • the flat rod Due to the material (light metal or a corresponding alloy), the flat rod has a higher coefficient of thermal expansion than the clip (usually made of sheet metal or steel).
  • the clips already have a high modulus of elasticity (low elasticity) due to the material, which is additionally reinforced by its construction (wall thickness). The result is high strength combined with very low elasticity (at least lower elasticity than the flat bar).
  • the positive connection of the clips (at least two clips are required for each flat bar as fastening) with the flat bar in the area of the ribs 6 (see FIG. 1) has a high clamping force. It is so high that there is no relative movement between the flat bar and the strip at these points. In particular, the material with the higher coefficient of linear expansion cannot expand.
  • the fastening means consists of a material which has the same coefficient of linear expansion as the flat bar.
  • the fastening means also consists of the same material as the flat rod.
  • it is essential that light metal flat bars are used in combination with fastening means (clothing clips) which, according to the invention, have the same (or approximately the same) material properties.
  • This first embodiment according to the invention relates to flat bars that are not made of steel or cast iron. It relates in particular to flat bars which consist of a light metal or a light metal alloy, in particular aluminum or an aluminum alloy.
  • fastening means are used for fastening clothing strips to flat bars, which consist of aluminum, or an aluminum alloy, or another light metal or light metal alloy.
  • This second embodiment according to the invention relates to the choice of the material from which the fastening means are made.
  • the flat bars can consist of a light metal or a light metal alloy, in particular aluminum or an aluminum alloy.
  • fastening means are used for fastening clothing strips to flat bars, which are characterized in that the fastening means is more elastic in its longitudinal direction than in its transverse direction.
  • fasteners can have such properties due to their design.
  • Such predetermined weak points can be designed such that the fastening means has different elasticity values depending on the direction.
  • fastening means are used for fastening clothing strips to flat bars, which have a wall thickness that is less than 0.4, preferably less than 0.3 mm.
  • This constructive measure is particularly suitable for fasteners made of known materials, e.g. B. made of sheet metal or steel. Due to the smaller cross-section or wall thickness, the fastening means, despite the constant high modulus of elasticity, is structurally weakened and therefore less rigid. This gives the flat bar the ability to stretch the fasteners, i.e. the clips, in the longitudinal direction. Although this structural weakening also reduces the clamping force of the fastening means, the wall thickness can be chosen in such a way that the weakening does not have a critical effect on the clamping force.
  • the fifth embodiment according to the invention is characterized in that a lubricant is attached between the contact surfaces of the fastening means and the flat rod.
  • the lubricant is designed in such a way that both the fastening means and the flat bar enable it to move or expand in the longitudinal direction (ie along the flat bar) relative to the other element.
  • This relative movement in the longitudinal direction takes place in particular when the flat rod is heated, so that the element with the higher coefficient of linear expansion (for example the cover rod) can expand in the longitudinal direction unhindered by the other element (for example fastening means).
  • the fastening means does not have to follow the movement or expansion of the flat rod: the flat rod can expand unhindered, so there are no tensions which could could cause the elements to bend.
  • the clamping effect of the fastener transverse to the longitudinal direction of the flat bar
  • the lubricant between the contact surfaces of the fastening means and the flat rod is implemented as a sliding layer with a low coefficient of friction.
  • the flat rod is preferably produced from a light metal or a light metal alloy, in particular from aluminum or an aluminum alloy.
  • fastening means can be a so-called clip, in particular for the attachment of clothing strips to flat bars (revolving flat or stationary flat bars) of the card.
  • the clothing strips can also be equipped with an all-steel clothing (sawtooth furniture)
  • the subject of the invention is also not limited to use in card flat bars. It can in particular also serve as a fastening means for other carding segments with other types of clothing (carding segments of the card, as of other cleaning machines, in particular cleaners).
  • the object of the invention is also preferably suitable as a fastening means for carding segments
  • the fastening means according to the invention can therefore also be used with the other carding segments in the carding machine or in a cleaner in the blow room he postcarding zones of the reel, or the carding segments on the licker-in.
  • the fastener can be used for stationary carding segments.
  • the fastening means is a clip, it can be made of sheet metal, preferably steel.
  • the sliding layer can be applied to the fastening means and / or on the flat rod by means of a coating, in particular a plastic coating.
  • the coating can also be done subsequently.
  • the coating is applied only on the contact surfaces between the fastening means and the flat rod.
  • the fastening means also has teeth that are sufficiently stable to allow the clothing strip to be inserted or punched into the fabric and / or plastic layers.
  • This feature applies in particular to fasteners that are not made of steel or sheet metal, but are made of aluminum or another material, for example.
  • Such fastening means according to the invention are particularly suitable for fastening clothing strips to machine elements of the card.
  • At least two fastening means according to the invention are preferably used.
  • Figure 1 A flat bar with clips according to the prior art.
  • FIG. 1 A fastener according to the third embodiment of the invention.
  • Figure 3 shows a variant of the third embodiment of the invention.
  • FIG 4 A fastener according to the fifth embodiment of the invention with lubricant.
  • Figure 5 Another fastener according to the invention
  • the flat bar in FIG. 1 has already been described above. We will therefore no longer go into this at this point.
  • the clips 1 are made according to the prior art from sheet metal or steel and have a wall thickness of at least 0.5 mm.
  • the flat rod 3 is made of light metal or a light metal alloy. This combination has the disadvantages described.
  • a fastener according to the third embodiment of the invention is shown (in two views).
  • the fastening means 9 according to the invention is more elastic in its longitudinal direction 10 than in its transverse direction 11. This property was achieved in the fastening means 9 by its design. It has groove-shaped weak points 12 in its longitudinal direction 10 at regular intervals.
  • the wall thickness is reduced at these points, so that the fastening means 9 overall has a reduced rigidity in the longitudinal direction 10 and thus a higher elasticity.
  • This structural design hardly reduces the clamping force in the transverse direction 11 and increases the elasticity of the fastening means 9 only insignificantly.
  • FIG. 3 shows a further variant of the third embodiment of the invention, also in two views.
  • weak points 12.1 are introduced in the fastening means 13 in the form of punched-out material. This gives the fastening means a direction-dependent elasticity or rigidity, and the fastening means 13 becomes longitudinally elastic. In the transverse direction 11, however, it maintains the required rigidity.
  • FIG. 4 shows a flat bar 3.1 with a clothing strip 2 which is fastened by two fastening means 15 according to the fifth embodiment according to the invention.
  • Lubricants 14 are attached between the contact surfaces of the fastening means 15 and the flat rod 3.1.
  • the two fastening means 15 also have teeth 4 which engage in the fabric layer of the clothing strip 2.
  • the lubricants 14 are to be understood here schematically. They allow the flat bar 3.1 and the fastening means 15 to move relative to one another (in the viewing direction, ie in the longitudinal direction of the flat bar 3.1), in particular to expand relative to one another when heated.
  • This lubricant 14 could be, for example, sliding layers with a low coefficient of friction.
  • the lubricants 14 can be applied to the fastening means 15 and / or to the flat bar 3.1.
  • the lubricants 14 can only be attached to the contact surfaces (as shown), or else the one and / or the other component (fastening means 15 or decorative Cover kelstab 3.1) in whole or in part (not shown).
  • the fastening means 15 could be completely surrounded or coated by the lubricant 14.
  • the lubricant 14 shown can also be a plastic coating (or a silicone layer).
  • FIG. 5 shows a detail of a fastening means 16 according to the invention.
  • the fastening means 16 is shown in two states.
  • the illustration on the left shows the fastening means 16 in the unbent state, in particular the teeth 4.
  • the fastening means 16 can have a wall thickness d which is less than 0.4 mm, preferably less than 0.3 mm.
  • the illustration on the right shows what the fastener 16 looks like in the assembled state (without a flat rod or clothing strip).
  • the teeth 4 according to the invention are designed (e.g. by their shape and dimensions) in such a way that they are sufficiently stable to be embedded in the fabric and / or plastic layers of the clothing strips.
  • the fastening means according to the invention preferably consist of a material which has the same expansion coefficient as light metal or light metal alloys, in particular aluminum or aluminum alloys.
  • the fastening means consists in particular of a material which has the same expansion coefficient as the material from which the flat bars are made, which are preferably made of light metal or light metal alloys.
  • the invention also relates to the use of fasteners on flat bars made of light metal for fastening trim strips.
  • fasteners is to be understood in particular to mean clips for fastening sets. These sets can be flexible sets, in particular so-called set strips, but also all-steel sets, eg sawtooth sets.
  • the fasteners according to the invention are preferred for the decorative parts. carding rods used. However, you are not limited to this application.
  • the fastening means according to the invention can in particular also be used for fastening to other carding segments, in particular for stationary carding segments in the pre- and postcarding zone of the card, as well as on its licker-in and on cleaners in the blow room.
  • the fastening means according to the invention can be used, for example, for applications according to the specifications CH 659 832, CH 654 341, CH 655 521 instead of the conventional clamps or clips described there, in particular for holding all-steel fittings and so-called scratch fittings.

Landscapes

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

Abstract

L'invention concerne des moyens de fixation (en particulier ce que l'on appelle des pinces pour garniture) servant à la fixation de bandes de garniture (2) sur des barres de chapeau en métal léger ou en alliages de métaux légers (3, 3.1). Ces moyens de fixation (9, 13, 15, 16) sont constitués de telle sorte que, lors du réchauffement des barres de chapeau (3, 3.1) à la température de fonctionnement de la machine de traitement de textiles, ils ne se déforment pas.
EP02711734A 2001-02-24 2002-02-22 Pince pour bandes de garniture Expired - Lifetime EP1362134B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3262001 2001-02-24
CH3262001 2001-02-24
PCT/CH2002/000105 WO2002068739A1 (fr) 2001-02-24 2002-02-22 Pince pour bandes de garniture

Publications (2)

Publication Number Publication Date
EP1362134A1 true EP1362134A1 (fr) 2003-11-19
EP1362134B1 EP1362134B1 (fr) 2006-11-15

Family

ID=4500163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02711734A Expired - Lifetime EP1362134B1 (fr) 2001-02-24 2002-02-22 Pince pour bandes de garniture

Country Status (5)

Country Link
US (2) US7055222B2 (fr)
EP (1) EP1362134B1 (fr)
CN (2) CN100507102C (fr)
DE (1) DE50208704D1 (fr)
WO (1) WO2002068739A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN100507102C (zh) * 2001-02-24 2009-07-01 里特机械公司 用于针布带的布铗
WO2006039829A1 (fr) * 2004-10-13 2006-04-20 Maschinenfabrik Rieter Ag Procede de fixation d'une bande de garniture sur une tige de couvercle, attache de garniture et outil de compression destine a l'usinage d'une attache de garniture
DE102005005222B4 (de) * 2005-02-03 2018-06-07 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o. dgl., bei der einer garnierten Walze ein Maschinenelement gegenüberliegt
DE102005005200B4 (de) * 2005-02-03 2021-09-16 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, bei der der Garnitur einer Walze ein Maschinenelement gegenüberliegt
DE102006005605A1 (de) * 2005-06-24 2007-01-04 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde für Baumwolle, Chemiefasern u. dgl., bei der mindestens ein Deckelstab mit einer Deckelgarnitur vorhanden ist.
DE102005055915A1 (de) * 2005-11-22 2007-05-24 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde oder Krempel zum Schleifen einer auf einer rotierenden Walze aufgezogenen Garnitur mit einer Trageinrichtung
MX2010005793A (es) * 2007-11-28 2010-08-31 Rieter Ag Maschf Chapon de carda giratorio.
BRPI0722240A2 (pt) * 2007-11-28 2014-06-10 Rieter Ag Maschf Dispositivo e método para a remoção de uma tira de guarnição de uma haste de tampa.
DE102007060982A1 (de) * 2007-12-14 2009-06-18 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde für Baumwolle, Chemiefasern u. dgl., bei der mindestens ein Deckelstab mit einer Deckelgarnitur vorhanden ist
DE102008025359A1 (de) * 2008-05-20 2009-11-26 Graf + Cie Ag Deckelstab für eine Karde
CH705549A1 (de) * 2011-09-16 2013-03-28 Graf & Co Ag Garnitur für einen Deckel einer Karde.
DE102014009339A1 (de) * 2014-06-27 2015-12-31 Trützschler GmbH + Co KG Textilmaschinenfabrik Vorrichtung an einer Karde oder Krempel, bei der mindestens ein Arbeits- und oder Abdeckelement einer garnierten Walze gegenüberliegt
CH712271A1 (de) * 2016-03-17 2017-09-29 Rieter Ag Maschf Arbeitselement.
DE102016106780B4 (de) * 2016-04-13 2019-02-07 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Karde oder Krempel
CN107345322B (zh) * 2016-05-05 2021-03-19 拉卡什米机械厂有限公司 紧固件、包括该紧固件的盖板杆组件以及梳理机
DE102018100752A1 (de) * 2018-01-15 2019-07-18 TRüTZSCHLER GMBH & CO. KG Kardierelement für eine Karde oder Krempel sowie Karde oder Krempel

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Also Published As

Publication number Publication date
CN1505705A (zh) 2004-06-16
CN101024908B (zh) 2012-09-05
WO2002068739A1 (fr) 2002-09-06
CN100507102C (zh) 2009-07-01
DE50208704D1 (de) 2006-12-28
US20060230582A1 (en) 2006-10-19
US7055222B2 (en) 2006-06-06
CN101024908A (zh) 2007-08-29
EP1362134B1 (fr) 2006-11-15
US20040154136A1 (en) 2004-08-12

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