EP0504101A1 - Traverse pour lame et lame pour un métier à tisser - Google Patents

Traverse pour lame et lame pour un métier à tisser Download PDF

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Publication number
EP0504101A1
EP0504101A1 EP92810140A EP92810140A EP0504101A1 EP 0504101 A1 EP0504101 A1 EP 0504101A1 EP 92810140 A EP92810140 A EP 92810140A EP 92810140 A EP92810140 A EP 92810140A EP 0504101 A1 EP0504101 A1 EP 0504101A1
Authority
EP
European Patent Office
Prior art keywords
shaft rod
rod according
cover layer
shaft
profile
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Withdrawn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
EP92810140A
Other languages
German (de)
English (en)
Inventor
Hansjörg Gysin
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0504101A1 publication Critical patent/EP0504101A1/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Withdrawn legal-status Critical Current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
    • 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
    • D03C9/0683—Arrangements or means for the linking to the drive system
    • 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
    • D03C9/0691—Arrangements of means for damping or noise reduction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/902—High modulus filament or fiber

Definitions

  • the invention relates to a shaft rod of a shaft frame for a weaving machine, which contains fiber composite materials and has a flat profile, as well as a shaft frame with such shaft rods and a method for producing such shaft rods.
  • the shaft frame and shaft rods of modern weaving machines have to meet high mechanical loads. Up to now, they have therefore mostly been made of metal, for large weaving widths more of steel, for high-speed machines increasingly of aluminum. They are made up of many parts and are therefore relatively expensive to manufacture. In addition, they still have relatively large inert masses, which increasingly poses problems with high and increasing machine speeds. Shaft frames which contain thermoset composite parts have also become known. However, these are still too complex and expensive to manufacture, are still complicated to set up and, moreover, there are problems in continuous operation.
  • the shaft rods should be simple in construction, inexpensive and quick to manufacture, consist of a few parts, have reduced masses and / or higher stiffnesses, and at the same time achieve long operating times.
  • the particular advantages of the inventive solution are that with a new structure, combined with new composite materials and their arrangement, improvements in the mechanical properties as well as significant simplifications and cost reductions are achieved.
  • high strength and rigidity with low weight is achieved in the simplest possible way by combining the sandwich structure with both-sided load-bearing and very stiff reinforcements at the flat ends of the profile bar, i.e. through the outside longitudinal reinforcement and the inside support rail, which carries both the strands and is also mechanically firmly integrated into the shaft rod.
  • the sandwich with a light core and firm cover layers serves as a light and stable spacer between these end longitudinal reinforcements.
  • the outer longitudinal reinforcement and the inner mounting rail are each mechanically firmly connected to the cover layer.
  • the thermoplastic matrix also results in increased fatigue strength and impact resistance of the shaft rods or the shaft frame.
  • the sandwich structure further increases bending rigidity, one high vibration damping and ultimately a significant reduction in noise.
  • a particularly favorable simple power transmission can be achieved by a flat connection of the mounting rail and cover layer, the height of the connecting surface can advantageously be at least as large as the thickness of the mounting rail.
  • Suitable inexpensive versions of the mounting rail can consist of a steel profile or a sheet steel profile.
  • the longitudinal reinforcement can also consist of steel, aluminum or sheet steel profiles. Particularly light and stiff designs can be achieved with UD reinforcement fibers.
  • Light and inexpensive cover layers can contain at least 50% glass fibers and ⁇ 45 ° glass fiber laminate.
  • Suitable matrix materials of sandwich core and top layer can consist of PPS, PEI, PA, PES, PSU, PUR or PE.
  • the matrices of sandwich core and cover layer can be amorphously connected or glued together.
  • Suitable light and durable sandwich cores can consist of foam, a knitted fabric or a 3-dimensional network. Particularly good stiffness is achieved through flat transition areas of the cover layer to the longitudinal reinforcement and mounting rail. Their angle of inclination is advantageously at most 40 °. Good force transmission in connection parts can be achieved by compressing the sandwich core into compact material or by injecting polymer in places in the sandwich core.
  • Particularly simple and stable heald frame can be formed by identical, symmetrically arranged upper and lower shaft rods.
  • the shaft rod 11 according to the invention has a simple, integrated structure with two longitudinal reinforcements located at the ends of its flat profile: with an outer longitudinal reinforcement 17 and an inner support rail 18, which also carries the strands 8 and thus the strand tensile forces K8 records (see also Fig. 9).
  • the sandwich part consists of a light sandwich core 15 and light thin, mechanically strong cover layers 16 and 16a, 16b made of thermoplastic composite material with technical continuous fibers, which serves as a spacer element and thereby transmits or absorbs the forces Ka, Kb between the carriers 17 and 18.
  • a relatively large width B of the sandwich which can largely fill the shaft division C, ie the space available for a shaft frame, a high bending stiffness is also achieved with regard to twisting moments of other acting forces. This also suppresses or prevents vibrations. This also results in a significant reduction in noise.
  • This new design makes it possible to place the direction of force K8 of the strands in the central plane 24 of the rod profile and thus to reduce torsional forces.
  • the mechanically firm connection of the longitudinal beams 17 and 18 to the cover layer 16 of the sandwich is very important. For example, very light and rigid top layers can have a layer thickness of only 0.3 to 0.6 mm.
  • the longitudinal reinforcement is designed as a UD profile 31.
  • This profile with high specific strength and rigidity consists of unidirectional carbon or glass fibers in a thermoplastic matrix.
  • a particularly good connection via the connecting surface 10 between the longitudinal reinforcement 17 and the cover layer 16 is achieved if both have the same matrix material and this is thermoplastic welded to one another at the connecting surface 10.
  • Such connections are also quick and easy to implement.
  • a steel profile 44 is mechanically fixed to the cover layer 16 as a support rail 18 for the strands 8.
  • This mechanically strong connection can also be done by Screw or rivets are made.
  • flat connections by means of gluing, welding or amorphous joining, quasi thermoplastic soldering are particularly advantageous.
  • the steel profile 44 is designed here in such a way that a relatively large connecting surface 19 is created.
  • the height H is advantageously greater than the thickness D of the support rail 18. So that the strands 8 can simply be hung into the support rail 18 and that the strand forces K8 come to lie in the central plane 24 of the shaft rod, here is a cover layer 16b in a transition area 12 between the middle of the rod and the inside is bent flat.
  • the cover layer is bent flat on both sides (16a and 16b) in a transition area 12 as well. These transition areas have relatively small angles W, preferably at most 40 °.
  • the sandwich core is e.g. from light, firm foams, from knitted fabrics or 3-dimensional networks with gaps.
  • the core 15 is also mechanically intimately connected to the cover layer.
  • Sandwich structures whose cover layer 16 and core 15 have the same matrix material and which are welded to one another are also advantageous here.
  • Additional cores can be made of PES, PUR or PE foam and additional cover layers e.g. also have a PE matrix or carbon fiber reinforcements.
  • FIGS. 9 and 10 show a sandwich shaft rod with a two-part longitudinal reinforcement 17 in the form of unidirectional profiles 32 and an easily formable and inexpensive sheet steel profile 46 as a heddle support rail 18.
  • Another advantage of the sandwich rods according to the invention is the possibility of connecting parts for connection elements such as guide elements in a simple manner 4 and actuating elements 3, which result in a favorable introduction of force onto the sandwich or its cover layer 16.
  • a polymer material can simply be injected into the core, thereby forming a connection part 14 for an actuating element 3 (see also FIGS. 9 and 10).
  • a further connection or reinforcement area 13 is formed on the inside of the profile in the vicinity of the support rail 18 by thermoplastic compression of the foam core 15.
  • connection area 5 is formed by thermoplastic forming and compacting in the central area 25 of the rod profile, which takes up the connection with the side supports 2 of a shaft frame, as is further explained in FIGS. 9 and 11.
  • the longitudinal reinforcement 17 is glued here as a steel profile 34 between the cover layers 16a, 16b and is formed in such a way that no curved transition region is necessary on the outside of the profile.
  • a flatly curved transition region 12 of the one cover layer 16b to the mounting rail 18 is required only on the inside.
  • the mounting rail 18 is designed as a further example of a sheet steel profile 47.
  • a heald frame guide element 4 is glued to the cover layer 16 on the outside of the rod, the steel profile 34 also acting here as a reinforcing base.
  • FIGS. 4 to 7 show further suitable designs of the longitudinal reinforcement 17.
  • FIG. 4 shows a UD profile 33 which is welded to the cover layer 16 on both sides and where the sandwich core 15 in between is compactly compacted (13).
  • the tapering shape 49 of the UD profile 33 results in a particularly favorable continuous course of the power transmission to the sandwich structure.
  • FIGS. 5 to 7 show further examples of inexpensive sheet steel profiles 36 to 38, with flat cover layers for profile 36 and with welded cover layers 16 for very simple profile 37 and for 2-part profile 38.
  • FIG. 9 shows a heald frame 1 with an upper and lower shaft rod 11 according to the invention.
  • Frame frames with identical shaft rods, which are arranged symmetrically to the shaft center 7, are particularly easy to manufacture.
  • the shaft frame also has side supports 2 with guide profiles 6, actuating elements 3 and upper and lower guide elements 4.
  • FIG. 10 shows the extension of a connection area 14, which consists of compact polymer material injected into the foam core 15.
  • the actuating element 3 is detachable, for example by screwing, or also by gluing (see FIG. 2).
  • FIG. 11 shows a connection between shaft rods 11 and side supports 2.
  • a connection area 5 (FIG. 3) in the central region of the profile rod 11 is formed by a thermoplastic indentation of the cover layer 16 and compacting (13) of the sandwich core 15, which may also be additional can be filled with polymer material to form a compact layer 14.
  • the side supports 2 can also consist of thermoplastic composite material with high-strength technical fibers. Then the one side support can also be firmly welded to the shaft rods, while the second side support is detachably connected for the purpose of pulling in the strands.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Looms (AREA)
EP92810140A 1991-03-14 1992-02-27 Traverse pour lame et lame pour un métier à tisser Withdrawn EP0504101A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH77591 1991-03-14
CH775/91 1991-03-14

Publications (1)

Publication Number Publication Date
EP0504101A1 true EP0504101A1 (fr) 1992-09-16

Family

ID=4194900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810140A Withdrawn EP0504101A1 (fr) 1991-03-14 1992-02-27 Traverse pour lame et lame pour un métier à tisser

Country Status (3)

Country Link
US (1) US5230370A (fr)
EP (1) EP0504101A1 (fr)
JP (1) JPH0578942A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975293A1 (fr) * 2007-03-26 2008-10-01 Groz-Beckert KG Rail de support à lisse en fer-blanc

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4427127C1 (de) * 1994-07-30 1995-07-06 Dornier Gmbh Lindauer Schraubverbindung, insbesondere für Schaftgestänge von Webmaschinen
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
EP1790761B8 (fr) * 2005-11-23 2011-09-21 Promatech S.p.A. Traverse pour cadre à lisses d'un métier à tisser, avec fixation améliorée du rail d'accrochage des lisses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005837A1 (fr) * 1987-01-28 1988-08-11 Grob & Co. Aktiengesellschaft Barre de support pour une lame
EP0302798A2 (fr) * 1987-08-06 1989-02-08 Steel Heddle Mfg. Co. Partie longitudinale d'un cadre à lisses et lisse

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH637702A5 (de) * 1979-07-13 1983-08-15 Grob & Co Ag Webeschaft.
US4476900A (en) * 1982-01-27 1984-10-16 Steel Heddle Manufacturing Company Composite heddle rod
US4508145A (en) * 1982-07-06 1985-04-02 Steel Heddle Mfg. Co. Heddle frame and composite frame slat construction
US4633916A (en) * 1985-06-24 1987-01-06 Rast John L Roll-formed shear-resistant frame slat
JPS63112744A (ja) * 1986-10-24 1988-05-17 住友化学工業株式会社 織機用綜絖枠の外枠ステ−
JPH0268331A (ja) * 1988-09-01 1990-03-07 Sumitomo Chem Co Ltd 織機用綜絖枠および綜絖枠用外枠ステーの製造方法
US4913194A (en) * 1988-11-18 1990-04-03 Steel Heddle Mfg. Co. Light weight heddle frame assembly slat
US4913193A (en) * 1989-02-14 1990-04-03 Steel Heddle Mfg. Co. Light weight heddle support bar
JPH02156331A (ja) * 1988-12-08 1990-06-15 Hitachi Ltd 判断補助方法および装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005837A1 (fr) * 1987-01-28 1988-08-11 Grob & Co. Aktiengesellschaft Barre de support pour une lame
EP0302798A2 (fr) * 1987-08-06 1989-02-08 Steel Heddle Mfg. Co. Partie longitudinale d'un cadre à lisses et lisse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975293A1 (fr) * 2007-03-26 2008-10-01 Groz-Beckert KG Rail de support à lisse en fer-blanc
US7624764B2 (en) 2007-03-26 2009-12-01 Groz-Beckert Kg Heald support bar of bent sheet metal

Also Published As

Publication number Publication date
US5230370A (en) 1993-07-27
JPH0578942A (ja) 1993-03-30

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