EP0496054B1 - Schaftstab für einen Webschaft - Google Patents

Schaftstab für einen Webschaft Download PDF

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Publication number
EP0496054B1
EP0496054B1 EP91119925A EP91119925A EP0496054B1 EP 0496054 B1 EP0496054 B1 EP 0496054B1 EP 91119925 A EP91119925 A EP 91119925A EP 91119925 A EP91119925 A EP 91119925A EP 0496054 B1 EP0496054 B1 EP 0496054B1
Authority
EP
European Patent Office
Prior art keywords
heald
carrier
rail
metal parts
welded
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
EP91119925A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0496054A1 (de
Inventor
Hans Baumann
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.)
Grob and Co AG
Original Assignee
Grob and Co 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 Grob and Co AG filed Critical Grob and Co AG
Publication of EP0496054A1 publication Critical patent/EP0496054A1/de
Application granted granted Critical
Publication of EP0496054B1 publication Critical patent/EP0496054B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/0616—Horizontal upper or lower rods
    • D03C9/0625—Composition or used material
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C15/00—Pattern cards or chains
    • D03C15/06—Apparatus for setting pegs in, or removing pegs from, pattern cards

Definitions

  • the invention relates to a shaft rod for a heald frame according to the preamble of claim 1.
  • heald frames made of light metal hollow profiles have been used for heald frames, each consisting of two shaft rods connected to one another by side supports, in which the heddle support rail is integrally formed in each case.
  • the weaving machines are supposed to run at ever higher numbers of revolutions and wider and wider weaving machines are being built, the load capacity of the rapidly oscillating heald frames, whose shaft rods made of light metal profiles do not have sufficient flexural strength, is reached. Since the alternating bending strength of steel is significantly better than that of light metal, shaft rods made of steel have also been proposed for wide heald frames in high-speed weaving machines.
  • These shaft rods which are designed as a sandwich construction, have very thin-walled sheet metal parts on the broad sides and thicker longitudinal profiles on the narrow sides of a supporting rod which forms a hollow body and which also carries the parallel extending stranded support rail on a metallic connecting part in order to reduce the weight.
  • Such a shaft rod known from DE-A-37 02 524 consists of a plurality of, in particular, flat and non-deformed individual parts, which have a corresponding number Weld seams are joined together to form a shaft rod.
  • this construction has several disadvantages. Not only are there too many weld seams required, which increases the cost of production, the necessary precision with regard to the straightness of the shaft rod to be produced being difficult to achieve due to the large number of weld seams, but the material thickness of the thicker sheet metal parts forming the narrow sides of the support rod is also not sufficient, to ensure a high bending strength of the construction. Because of the vibrations that occur during operation of the heald frame in the weaving machine, the shaft rod creates sound waves, but the sound-absorbing effect of the foam body contained in the cavity of the support rod is only very slight.
  • the object of the present invention was therefore to provide a heald frame for a heald frame which can be produced more cost-effectively and which can also be easily adapted to the individual requirements of the customer in terms of stiffness and weight of the heald frame with simple measures, and which also is much better soundproofed due to its structure.
  • the shaft rod has the features according to the patent claims. All metallic parts of the shaft rod are preferably connected to one another by means of laser welding. A high bending strength is achieved with the solid longitudinal bar, which is essentially rectangular in cross-section, on one narrow side of the supporting bar, an advantage of this construction being that the cross-section of this longitudinal bar can be made smaller or larger as required to achieve changes in properties.
  • the gauges and auxiliary tools used in the manufacture do not have to be changed in order to produce shaft rods with different properties. It is also possible to have a cross-sectional profile of the longitudinal rod that increases in size towards the longitudinal center in order to produce a significantly stiffer shaft rod without changing its external dimensions.
  • the shaft rod shown in Fig. 1 for a heald frame has a support rod 1 designed as a hollow body and then downwards a support part 2, which consists of a multi-angled profile rail and to which the heddle support rail 3 extending parallel to the support rod 1 is fastened.
  • the support rod 1 is of a solid cross-section substantially rectangular longitudinal rod 4, which forms one narrow side, and of the parallel extending and the other narrow side forming leg 5 of the multi-angled support part 2 and two thin-walled and over the entire length of Shaft rod extending sheet metal parts 6 and 7 are formed, which are welded to the longitudinal rod 4 and on the carrier part 2 outside.
  • the connection is preferably made by means of laser welding.
  • the shaft rod is finished with a total of five weld seams.
  • the four weld seams on the support rod 1 lie opposite one another in pairs, so that due to this symmetry the warping that otherwise occurs during welding can be avoided, so that a high precision with regard to the straightness of the shaft rod can be achieved. Since the heddle support rail 3 is welded on from its rear, the front remains completely smooth, so that the healds, not shown, can slide freely on the heddle support rail.
  • the depth of the bead 9 can be made with different dimensions during manufacture, so that even a welded-on, thinner stranded support rail is in the right place and this way a further weight reduction can be achieved if this involves a certain loss in rigidity is desired.
  • the support rod 1 encloses a cavity which is filled with a filler 10. 1 has a honeycomb-shaped structure with a large number of individual cavities 11 which extend transversely therethrough.
  • Each of these individual cavities 11 is filled with an elastic, sound-absorbing material.
  • This is a soft foam that has good adhesive properties.
  • the filler body 10 with the honeycomb structure now has only a very small area on the end faces facing the sheet metal parts 6 and 7, which is suitable for the adhesive connection with the sheet metal parts. Since the sheet metal parts 6 and 7 are only 0.15 mm to 0.25 mm thick, buckling of the thin sheet metal parts must be prevented by additional measures because of the low supporting effect of the honeycomb-shaped filler.
  • a material strip 12 is arranged on both sides of the packing 10, which is impregnated with an adhesive, which can only be activated for the gluing process and only then hardens.
  • the material strip consists of fabric or non-woven fabric and is commercially available soaked with adhesive under the name "Prepreg".
  • the double-sided adhesive material strips 12 have the effect that the very thin-walled sheet metal parts 6 and 7 are connected over the entire surface to the filler body 10 in order to prevent the buckling of these sheet metal parts, which is crucial for the stability of the entire shaft rod.
  • a material can be selected for the material strip 12 which retains high elasticity even after the adhesive layer has hardened. It is achieved that the thin sheet metal parts 6 and 7 do not bulge, but are still well soundproofed.
  • the filling body 10 can also be a rigid foam 13 with a large number of holes 14 extending transversely therethrough. These individual cavities 14 are then also filled with a sound-absorbing material that remains elastic.
  • the described shaft rod has the particular advantages that it can be modified by constructively changing its individual components, such as the cross section of the longitudinal rod 4 or the sheet thickness of the support part 2 for the heddle support rail 3 or the depth of the bead 9 for fastening the heddle support rail and the cross section of this heddle support rail and the selection of the material for the filler body 10 can be adapted to the specific needs of the weaving company with the outer dimensions of the shaft rod unchanged.
  • a shaft rod with high rigidity can be produced for very heavy fabrics or for very wide fabrics, which, thanks to the high rigidity, can be used without the frequently disturbing intermediate strut.
  • a shaft rod with a relatively low weight can be produced. It is particularly advantageous that modified shaft rods can be produced in the individual components using the same production means, which allows economical production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Rod-Shaped Construction Members (AREA)
EP91119925A 1991-01-19 1991-11-22 Schaftstab für einen Webschaft Expired - Lifetime EP0496054B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4101512 1991-01-19
DE4101512A DE4101512C1 (un) 1991-01-19 1991-01-19

Publications (2)

Publication Number Publication Date
EP0496054A1 EP0496054A1 (de) 1992-07-29
EP0496054B1 true EP0496054B1 (de) 1995-09-06

Family

ID=6423325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119925A Expired - Lifetime EP0496054B1 (de) 1991-01-19 1991-11-22 Schaftstab für einen Webschaft

Country Status (6)

Country Link
US (1) US5183082A (un)
EP (1) EP0496054B1 (un)
JP (1) JPH04300337A (un)
KR (1) KR0162909B1 (un)
CN (1) CN1028121C (un)
DE (1) DE4101512C1 (un)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT237225Y1 (it) * 1995-10-16 2000-09-05 Nuova O M V S R L S R L Traversa a struttura composita per quadri porta-licci di telai ditessitura
DE29604326U1 (de) * 1996-01-13 1996-06-05 Schmeing GmbH & Co., 46325 Borken Webschaft mit Litzentragschiene für Webmaschinen
IT1318130B1 (it) * 2000-07-06 2003-07-23 Nuova O M V S R L Traversa a piu' componenti per quadri portalicci a rumorosita' ridotta di telai di tessitura.
DE10153729B4 (de) * 2001-10-31 2013-09-12 Grob Textile Ag Tragkörper für einen Webschaft
DE10325908B4 (de) 2003-06-05 2005-07-21 Groz-Beckert Kg Schaftstab, Webschaft und Verfahren zur Herstellung eines Schaftstabs
DE10326123B4 (de) * 2003-06-06 2007-01-04 Groz-Beckert Kg Schaftstab, Herstellungsverfahren für diesen und Webschaft
DE10349382B3 (de) * 2003-10-21 2005-06-09 Groz-Beckert Kg Webschaft in Verbundbauweise
DE102004055381B3 (de) * 2004-11-17 2006-04-06 Groz-Beckert Kg Schafstab für Webschäfte
DE102005044474B3 (de) * 2005-09-16 2007-01-04 Groz-Beckert Kg Schaftstab und Webschaft
EP1975293B1 (de) * 2007-03-26 2012-01-25 Groz-Beckert KG Litzentragschiene aus gebogenem Blech
EP2037019B1 (de) * 2007-09-11 2009-12-09 Groz-Beckert KG Geklebte Litzentragschiene
JP5769958B2 (ja) * 2010-12-17 2015-08-26 ナンカイ工業株式会社 サイドステー取付部構造
BE1020352A3 (nl) * 2011-11-03 2013-08-06 Picanol Weefkader met een versterkingsprofiel.
IT201900008379A1 (it) * 2019-06-07 2020-12-07 Itema Spa Traversa di quadro-liccio per telai di tessitura a rigidita' migliorata

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH488035A (de) * 1967-12-22 1970-03-31 Froehlich Ag E Tragstab für Webschäfte
CH525352A (de) * 1968-09-13 1972-07-15 Contraves Ag Stab mit hoher Biegesteifigkeit und Verwendung desselben
CH610993A5 (un) * 1976-06-08 1979-05-15 Sulzer Ag
CH637702A5 (de) * 1979-07-13 1983-08-15 Grob & Co Ag Webeschaft.
US4633916A (en) * 1985-06-24 1987-01-06 Rast John L Roll-formed shear-resistant frame slat
DE3702524A1 (de) * 1987-01-28 1988-08-11 Grob & Co Ag Tragstab fuer einen webschaft
EP0288652A1 (fr) * 1987-04-28 1988-11-02 N.V. Verbrugge Traverse pour lame de métier à tisser
US4790357A (en) * 1987-08-06 1988-12-13 Steel Heddle Mfg., Inc. Harness frame slat and heddle

Also Published As

Publication number Publication date
KR0162909B1 (ko) 1998-12-01
EP0496054A1 (de) 1992-07-29
CN1063514A (zh) 1992-08-12
US5183082A (en) 1993-02-02
CN1028121C (zh) 1995-04-05
DE4101512C1 (un) 1992-02-06
KR920014966A (ko) 1992-08-26
JPH04300337A (ja) 1992-10-23

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