EP0504104A1 - 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
EP0504104A1
EP0504104A1 EP92810146A EP92810146A EP0504104A1 EP 0504104 A1 EP0504104 A1 EP 0504104A1 EP 92810146 A EP92810146 A EP 92810146A EP 92810146 A EP92810146 A EP 92810146A EP 0504104 A1 EP0504104 A1 EP 0504104A1
Authority
EP
European Patent Office
Prior art keywords
profile
shell
shaft rod
rod according
shaft
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Withdrawn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
EP92810146A
Other languages
German (de)
English (en)
Inventor
Hansjörg Gysin
Wilhelm Servis
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 EP0504104A1 publication Critical patent/EP0504104A1/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Withdrawn legal-status Critical Current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, and a shaft frame with 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 have a simple structure, can be produced inexpensively and quickly, 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 are achieved in the simplest possible way by combining the profile shell structure with double-sided, load-bearing and very rigid reinforcements at the flat ends of the profile rod, i.e. through the outside longitudinal reinforcement and the inside support rail, which carries both the strands as well as being mechanically firmly integrated into the shaft rod.
  • the mechanically strong profiled shell serves as a light and stable spacer between these end reinforcements.
  • the outer longitudinal reinforcement and the inner mounting rail are each mechanically firmly connected to the profile shell.
  • the thermoplastic matrix also results in increased fatigue strength and impact resistance of the shaft rods or the shaft frame. Due to the wide profile shape of the shell, increased bending stiffness, high vibration damping and ultimately also a substantial reduction in noise are achieved.
  • a particularly favorable, simple power transmission can be achieved by a flat connection of the mounting rail and longitudinal reinforcement to the profile shell, the height of the connecting surface advantageously being 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 profile shells can contain at least 50% glass fibers and ⁇ 45 ° glass fiber laminate.
  • Suitable matrix materials of the profile shell can consist of PPS, PEI, PA, PES, PSU, PUR or PE.
  • the profile shape merges into a flat edge strip at the inner and outer end, which is mechanically firmly connected to the longitudinal reinforcement and mounting rail.
  • the profile shell can also merge into two parallel, flat and interrupted edge strips.
  • Good force transmission in connection areas can be formed by a support thermoplastic welded to the profile shell.
  • the shell can have an easy-to-produce wavy or trapezoidal profile that runs perpendicular to the rod axis.
  • Particularly favorable mechanical properties can be achieved with periodic shell profiles in which the ratio of period P to width B of the profile is between 3 and 8.
  • 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, each with two at the ends load-bearing longitudinal reinforcements lying on its flat profile: With an outer longitudinal reinforcement 17 and an inner support rail 18, which also carries the strands 8 and thus absorbs the strand pulling forces K8 (see also FIG. 7). These longitudinal beams 17 and 18, together with a profiled shell 16 lying between them, form a very light supporting structure with great strength and bending rigidity with regard to the strand forces K8.
  • the very light and mechanically strong profile shell 16 consists of thermoplastic composite material with technical continuous fibers.
  • the profile shell serves as a spacer element which transmits or absorbs the forces Ka, Kb between the supports 17 and 18.
  • a relatively large possible width B of the profile shell 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 further 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 profile shell 16 is very important.
  • the longitudinal reinforcement is designed as a UD profile 32.
  • 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 connection surface 10 between the longitudinal reinforcement 17 and the profile shell 16 is achieved if both have the same matrix material and this on the connection surface 10 is thermoplastic welded together.
  • Such connections are also quick and easy to implement.
  • a steel profile 44 is mechanically fixed to the profile shell 16 as a support rail 18 for the strands 8.
  • This mechanically firm connection can also be made by screwing or riveting.
  • 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 mounting rail 18. So that the strands 8 can simply be hung in the mounting rail 18 and that the strand forces K8 come to rest in the central plane 24 of the shaft rod, the profile shell 16 goes at both ends in a flat edge strip 21 with which the longitudinal reinforcement 17 and the mounting rail 18 are mechanically firmly connected.
  • the shell 16 here has a wavy profile 20, as can be seen from the sectional view in FIG. 1b.
  • a ratio of period P to width B of the profile of preferably 3 to 8 gives good mechanical properties with low weight.
  • FIGS. 2a, 2b A shaft rod with a trapezoidal profile shell 23 is shown in FIGS. 2a, 2b.
  • This profile shell divides at the outer end and merges into two parallel, flat, interrupted edge strips 22.
  • the longitudinal reinforcement 17, here in the form of a steel profile 34, is inserted and glued flat between these edge strips 22 (FIG. 10). This in turn results in a slightly rigid rod shape with favorable force ratios.
  • connection parts 13 for connection elements such as guide elements 4 and actuating elements 3, which result in a favorable introduction of force onto the profile shell.
  • a fiber-reinforced pad 14 with the same thermoplastic matrix can be welded onto the profile shell 16.
  • a connection area 13 for an actuating element 3 is thus formed.
  • the tapering shape 49 of the UD profile 32 in FIG. 1a results in a particularly favorable, continuous course of the force transmission to the profile shell structure.
  • connection part 13 with a support 14 for fastening a guide element 4 is shown.
  • a connection area 5 is formed by thermoplastic deformation and, depending on the forces to be absorbed, with or without additional support 14 in the central area 25 of the rod profile, which connects to the side supports 2 of a shaft frame, as further explained in FIGS. 7 and 9 is.
  • the mounting rail is designed as an easily formable and inexpensive sheet steel profile 47. .
  • FIGS. 3 to 5 show further suitable designs of the longitudinal reinforcement 17.
  • FIG. 3 shows a further UD profile 31, which is welded to the profile shell 16.
  • FIGS. 4 and 5 show further examples of inexpensive sheet steel profiles: a very simple profile 42 and a two-part profile 41.
  • FIG. 7 shows a heald frame 1 with an upper and lower shaft rod 11 according to the invention identical shaft rods, which are arranged symmetrically to the shaft center 7.
  • the shaft frame also has side supports 2 with guide profiles 6, actuating elements 3 and upper and lower guide elements 4.
  • connection area 13 which is formed by a welded support 14.
  • the actuating element 3 is detachable, e.g. attached by screwing, or also by gluing (see Fig. 1a).
  • FIG. 9 shows a connection between shaft rods 11 and side supports 2.
  • a connection area 5 (FIG. 2a) in the central region of the profile shell rod 11 is formed by a thermoplastic indentation in the profile shell 16 with a welded-in support 14 lying therebetween.
  • the side supports 2 can likewise consist of thermoplastic composite material with high-strength technical fibers. Then one side support can also be firmly welded to the profile shell 16 of 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)
EP92810146A 1991-03-14 1992-02-27 Traverse pour lame et lame pour un métier à tisser Withdrawn EP0504104A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH777/91 1991-03-14
CH77791 1991-03-14

Publications (1)

Publication Number Publication Date
EP0504104A1 true EP0504104A1 (fr) 1992-09-16

Family

ID=4194946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810146A Withdrawn EP0504104A1 (fr) 1991-03-14 1992-02-27 Traverse pour lame et lame pour un métier à tisser

Country Status (3)

Country Link
US (1) US5226457A (fr)
EP (1) EP0504104A1 (fr)
JP (1) JPH0571037A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004055381B3 (de) * 2004-11-17 2006-04-06 Groz-Beckert Kg Schafstab für Webschäfte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020521A (fr) * 1950-04-29 1953-02-06 Formenti Sa Fab Perfectionnements apportés aux cadres porte-lisses pour métiers à tisser
FR1037843A (fr) * 1950-06-28 1953-09-23 Formenti Sa Fab élément métallique profilé pour cadres de lames porte-lisses
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697453A (en) * 1950-04-29 1954-12-21 Formenti Paolo Profile metal element made of a number of welded component parts, for frames of heddle shafts
US2774386A (en) * 1950-06-28 1956-12-18 Formenti Paolo Profile element for harness frames
US3948296A (en) * 1972-06-30 1976-04-06 Grob & Co. Aktiengesellschaft Frame stave for heald frame of weaving machine
JPS62156331A (ja) * 1985-12-26 1987-07-11 日立化成工業株式会社 織機用ヘルドフレ−ム部材
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−

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020521A (fr) * 1950-04-29 1953-02-06 Formenti Sa Fab Perfectionnements apportés aux cadres porte-lisses pour métiers à tisser
FR1037843A (fr) * 1950-06-28 1953-09-23 Formenti Sa Fab élément métallique profilé pour cadres de lames porte-lisses
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

Also Published As

Publication number Publication date
US5226457A (en) 1993-07-13
JPH0571037A (ja) 1993-03-23

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