EP0457210A1 - Tige à matériaux composites pour cadres de lisses - Google Patents

Tige à matériaux composites pour cadres de lisses Download PDF

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Publication number
EP0457210A1
EP0457210A1 EP91107616A EP91107616A EP0457210A1 EP 0457210 A1 EP0457210 A1 EP 0457210A1 EP 91107616 A EP91107616 A EP 91107616A EP 91107616 A EP91107616 A EP 91107616A EP 0457210 A1 EP0457210 A1 EP 0457210A1
Authority
EP
European Patent Office
Prior art keywords
shaft
heddle
heddle frames
bar
surface layers
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Withdrawn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
EP91107616A
Other languages
German (de)
English (en)
Inventor
Elio Carrara
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0457210A1 publication Critical patent/EP0457210A1/fr
Withdrawn legal-status Critical Current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
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/0616—Horizontal upper or lower rods
    • D03C9/0633—Heald bars or their connection to other frame parts

Definitions

  • the present invention relates to shafts for heddle frames made of composite materials.
  • heddle frames constitute a highly critical component for the perfect execution of the weaving. Heddle frames must furthermore comply with mutually contrasting mechanical requirements; they must in fact be light but resistant to mechanical stresses, they must be wear-resistant and easily interchangeable and must finally have maximum quietness once installed.
  • a heddle frame is composed of a frame with a substantially rectangular shape which supports, by means of the strips rigidly associated with the cross-members or shafts, the heddles, which are laminae provided, in their median portion, with an eye or slot.
  • the warp threads of the fabric pass within the eyes of the heddles.
  • Said laminae can slide freely and are hooked, above and below, to said strips which are rigidly associated with the shafts.
  • the strips are furthermore fixed to the shafts by means of anchoring means which normally are rivets, thus providing the premises for critical points for the breakage of the strips and of the shafts themselves.
  • the shafts are generally made of extruded aluminum and the strips are made of steel having, in the heddle sliding region, a wear-resistant surface treatment.
  • Heddle frames must therefore withstand heavy dynamic stresses.
  • the structure of the heddle frame has been stiffened by increasing the transverse dimensions of both the shafts and the uprights or brackets, and by designing the internal structure of the extruded element so as to increase the supporting ridges of the structure.
  • the aim of the present invention is to eliminate or substantially reduce the disadvantages described above in known types by providing shafts for heddle frames made of composite materials.
  • an object of the present invention is to provide shafts for heddle frames which increase resistance to dynamic stresses by having an innovative geometry while maintaining full compatibility and interchangeability with the heddle frames currently in use.
  • Not least object of the present invention is to provide shafts for heddle frames which are relatively easy to manufacture at competitive costs.
  • shafts for heddle frames made of composite materials according to the invention characterized in that they are composed of a bar on which surface layers of non-metallic material are fixed, said bar and said layers delimiting a box-like compartment which is filled with non-metallic material and is closed, on the side opposite to said bar, by at least one element defining anchoring points for heddles.
  • a shaft for heddle frames made of composite materials is composed of a bar 1 on which surface layers 2 made of a non-metallic material are fixed.
  • the bar 1 and the, layers 2 delimit a box-like compartment 3 which is filled with non-metallic material 4.
  • the box-like compartment 3 is closed, on the side opposite to the bar 1, by a monolithic strip 5 which is shaped so as to have anchoring points 6 for heddles.
  • the bar 1 is made of pulverized extruded material or of extruded aluminum and is shaped (see figure 4) so as to have grooves or recesses 7 for providing couplings to anchoring points for connection to the textile machine or couplings of other kinds.
  • the surface layers 2 are made of composite materials, (e.g. carbon fibre); the material 4 which fills the box-like compartment 3 is constituted by material which is foamed or preformed or injected into said box-like compartment 3.
  • composite materials e.g. carbon fibre
  • the material 4 which fills the box-like compartment 3 is constituted by material which is foamed or preformed or injected into said box-like compartment 3.
  • the monolithic strip 5 is obtained by bending an aluminum or steel lamina or by extruding aluminum, and has a curled portion 9 which is inserted between the surface layers 2.
  • the anchoring points 6 are constituted by a lamina 8 which is fixed to the monolithic strip 5 by means of either welding or brazing or is made monolithically.
  • the monolithic strip 5 is shaped differently and does not have a curled portion 9 between the layers 2 but connects the inner surfaces of the box-like compartment 3.
  • FIG. 5 is a view of a shaft for heddle frames made of composite materials, which is composed of a bar 10 on which shaped surface layers 11, made of composite material, are fixed.
  • the bar 10 and the layers 11 delimit a box-like compartment 12 which is filled with non-metallic material 13 and is closed, on the opposite side with respect to said bar, by shaped portions which are defined in the surface layers 11 and define anchoring points 14 for the heddle supporting strips.
  • the shaped portions are defined on one of the layers 11 which constitute the composite material (e.g. carbon fibre); a seat 16 is defined between the layers 11 for a bar 17, which is made of a metal such as aluminum, steel or the like, and remains enclosed within the layers 11 by means of continuous and monolateral anchoring points 14.
  • the composite material e.g. carbon fibre
  • the composite material is furthermore folded so as to define a hook 18 which constitutes the anchoring points.
  • the terminal portion 19 of the hook 18 is provided with a rim 20, figure 7, made of wear-resistant material, so as to reduce friction with the heddles.
  • a shaft provided with an anchor having a bilateral tooth 23 is illustrated in figure 10.
  • the terminal shaped portion of the carbon fibre material delimits a cavity 21 within which a bar 22, made of a metal such as aluminum, steel or the like, is inserted.
  • the surface of the twin tooth 23 thus obtained is coated with appropriate wear-resistant treatments.
  • Each heddle, as illustrated in figure 11, must have a tongue-like hooking point 24 in order to engage the double tooth 23.
  • the carbon fibre defines a seat 30 with complementarily inclined teeth 31 which act as support for a twin-toothed hook 32 which, by having a complementary configuration, couples to the teeth 31.
  • Said heddle frame is composed of an upper shaft 24 which has two separators 27 and two couplings 28 for motion transmission.
  • the shafts 24 and 26 are mutually connected by means of lateral brackets 29 made of filament winding.
  • the shafts 24 and 26 are provided with different heights, so as to advantageously minimize the deformations caused by the distribution of the dynamic loads.
  • the height of the upper shaft 24 is greater than that of the lower shaft 26.
  • Another measure for further reducing the deformations due to the dynamic stresses is to provide both shafts with variable profiles, i.e. to increase the height of the cross-section of the shaft from its ends toward its center, obtaining an outer profile of the shafts which resembles a catenary.
  • the cross-section increase affects the side opposite to the continuous anchoring region.
  • the brackets 29 made of filament winding are obtained by means of a method illustrated in figures 8 and 9.
  • the filament winding is wound on a spindle so as to obtain a cylinder 30.
  • Said cylinder is sliced with appropriate thicknesses so as to obtain rings which are cut further to obtain the brackets 29.
  • the bars 1 and 10 may be obtained not only from filament winding or from extruded aluminum but also from pulverized extruded materials.
  • the materials employed, as well as the dimensions, may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Laminated Bodies (AREA)
EP91107616A 1990-05-15 1991-05-10 Tige à matériaux composites pour cadres de lisses Withdrawn EP0457210A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20307A IT1239916B (it) 1990-05-15 1990-05-15 Licciruolo per quadri licci in materiali compositi
IT2030790 1990-05-15

Publications (1)

Publication Number Publication Date
EP0457210A1 true EP0457210A1 (fr) 1991-11-21

Family

ID=11165607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107616A Withdrawn EP0457210A1 (fr) 1990-05-15 1991-05-10 Tige à matériaux composites pour cadres de lisses

Country Status (4)

Country Link
EP (1) EP0457210A1 (fr)
JP (1) JPH05331735A (fr)
FI (1) FI912332A (fr)
IT (1) IT1239916B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280810A (en) * 1992-07-16 1994-01-25 Nankai Kogyo Kabushiki Kaisha Heald frame with stabilizer rod
ES2051153A1 (es) * 1990-07-24 1994-06-01 Grob & Co Ag Marco de lizos.
US5345974A (en) * 1991-09-11 1994-09-13 Lamiflex S.P.A. Heald supporting frame
EP0770722A1 (fr) * 1995-10-16 1997-05-02 Nuova O.M.V. S.r.l. Traverse à structure composite pour lames de métiers à tisser
EP1067298A2 (fr) * 1999-07-05 2001-01-10 Vosper Thornycroft (Uk) Ltd. Elément composite
DE10153729A1 (de) * 2001-10-31 2003-05-15 Grob Horgen Ag Horgen Tragkörper für einen Webschaft
EP1498521A2 (fr) * 2003-07-18 2005-01-19 Staubli Faverges Cadre de lisses et métier à tisser pourvu d'au moins un tel cadre
FR2857675A1 (fr) * 2003-07-18 2005-01-21 Staubli Sa Ets Cadre lisses et metier a tisser pourvu d'au moins un tel cadre
US7069959B2 (en) * 2003-06-06 2006-07-04 Groz-Beckert Kg Heddle shaft rod, method for producing it, and heddle shaft
WO2011023383A1 (fr) * 2009-08-31 2011-03-03 Picanol Cadre de lisses pour machine à tisser
WO2013064355A2 (fr) 2011-11-03 2013-05-10 Picanol Cadre de lisses muni d'un profil de renfort

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349382B3 (de) * 2003-10-21 2005-06-09 Groz-Beckert Kg Webschaft in Verbundbauweise
JP6312194B2 (ja) * 2013-10-25 2018-04-18 新日鉄住金マテリアルズ株式会社 炭素繊維強化複合材製ヘルドフレームステーブ、及び、サイドステー取付部構造

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348580A (en) * 1965-05-12 1967-10-24 Grob & Co Ag Frame stave for a heddle frame
US4484604A (en) * 1983-09-06 1984-11-27 Steel Heddle Mfg. Co. Composite dual-face heddle frame slat
EP0302798A2 (fr) * 1987-08-06 1989-02-08 Steel Heddle Mfg. Co. Partie longitudinale d'un cadre à lisses et lisse
US4844130A (en) * 1987-04-28 1989-07-04 N. V. Verbrugge Weaving loom blade crossbeam
US4901767A (en) * 1987-01-28 1990-02-20 Grob & Co. Aktiengesellschaft Supporting bar of a heddle frame

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348580A (en) * 1965-05-12 1967-10-24 Grob & Co Ag Frame stave for a heddle frame
US4484604A (en) * 1983-09-06 1984-11-27 Steel Heddle Mfg. Co. Composite dual-face heddle frame slat
US4901767A (en) * 1987-01-28 1990-02-20 Grob & Co. Aktiengesellschaft Supporting bar of a heddle frame
US4844130A (en) * 1987-04-28 1989-07-04 N. V. Verbrugge Weaving loom blade crossbeam
EP0302798A2 (fr) * 1987-08-06 1989-02-08 Steel Heddle Mfg. Co. Partie longitudinale d'un cadre à lisses et lisse

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051153A1 (es) * 1990-07-24 1994-06-01 Grob & Co Ag Marco de lizos.
US5345974A (en) * 1991-09-11 1994-09-13 Lamiflex S.P.A. Heald supporting frame
US5280810A (en) * 1992-07-16 1994-01-25 Nankai Kogyo Kabushiki Kaisha Heald frame with stabilizer rod
EP0770722A1 (fr) * 1995-10-16 1997-05-02 Nuova O.M.V. S.r.l. Traverse à structure composite pour lames de métiers à tisser
EP1067298A2 (fr) * 1999-07-05 2001-01-10 Vosper Thornycroft (Uk) Ltd. Elément composite
EP1067298A3 (fr) * 1999-07-05 2002-05-08 Vosper Thornycroft (Uk) Ltd. Elément composite
US6994123B2 (en) 2001-10-31 2006-02-07 Grob Horgen Ag Support element for a heddle frame
DE10153729A1 (de) * 2001-10-31 2003-05-15 Grob Horgen Ag Horgen Tragkörper für einen Webschaft
DE10153729B4 (de) * 2001-10-31 2013-09-12 Grob Textile Ag Tragkörper für einen Webschaft
US7069959B2 (en) * 2003-06-06 2006-07-04 Groz-Beckert Kg Heddle shaft rod, method for producing it, and heddle shaft
FR2857675A1 (fr) * 2003-07-18 2005-01-21 Staubli Sa Ets Cadre lisses et metier a tisser pourvu d'au moins un tel cadre
EP1498521A3 (fr) * 2003-07-18 2005-04-13 Staubli Faverges Cadre de lisses et métier à tisser pourvu d'au moins un tel cadre
US7147010B2 (en) 2003-07-18 2006-12-12 Staubli Faverges Heddle frame and weaving loom provided with at least one such frame
US7509981B2 (en) 2003-07-18 2009-03-31 Staubli Faverges Heald frame and weaving machine equipped with same
EP1498521A2 (fr) * 2003-07-18 2005-01-19 Staubli Faverges Cadre de lisses et métier à tisser pourvu d'au moins un tel cadre
WO2011023383A1 (fr) * 2009-08-31 2011-03-03 Picanol Cadre de lisses pour machine à tisser
BE1018874A3 (nl) * 2009-08-31 2011-10-04 Picanol Nv Weefkader voor een weefmachine.
WO2013064355A2 (fr) 2011-11-03 2013-05-10 Picanol Cadre de lisses muni d'un profil de renfort

Also Published As

Publication number Publication date
IT9020307A1 (it) 1991-11-15
FI912332A0 (fi) 1991-05-14
FI912332A (fi) 1991-11-16
IT9020307A0 (it) 1990-05-15
IT1239916B (it) 1993-11-23
JPH05331735A (ja) 1993-12-14

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