EP1659200B1 - Barre pour cadre à lisses - Google Patents

Barre pour cadre à lisses Download PDF

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Publication number
EP1659200B1
EP1659200B1 EP05023399A EP05023399A EP1659200B1 EP 1659200 B1 EP1659200 B1 EP 1659200B1 EP 05023399 A EP05023399 A EP 05023399A EP 05023399 A EP05023399 A EP 05023399A EP 1659200 B1 EP1659200 B1 EP 1659200B1
Authority
EP
European Patent Office
Prior art keywords
shaft rod
rod according
flange
shaft
side wall
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 - Fee Related
Application number
EP05023399A
Other languages
German (de)
English (en)
Other versions
EP1659200A1 (fr
Inventor
Franz Mettler
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1659200A1 publication Critical patent/EP1659200A1/fr
Application granted granted Critical
Publication of EP1659200B1 publication Critical patent/EP1659200B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a shaft rod for a heald and a weaving machine equipped with such a heald.
  • healds are used in weaving machines, which carry healds and with these move the warp threads out of their middle warp thread plane.
  • the healds extend over the entire width of the fabric to be created, each with a shaft rod above and a shaft rod below the warp threads.
  • the ends of the shaft rods are are connected by side supports.
  • Litzentragschienen sit with healds on the shaft rods.
  • the specialized education takes place by fast up and down movement of the weaving shed. After this up and down movement is derived from the speed of the main drive shaft of the loom, one also speaks of increasing machine speeds in view of the increasing speed of the reciprocating motion of the heald.
  • the shaft rods are crucial for the efficiency of the heald. Especially important is the bending resistance of the shaft rods with dynamically changing load. The stiffer the shaft rods can be designed the speed of rotation is the entire heald.
  • the DE 37 02 524 a shaft rod, which is a welded construction made of sheet steel. This forms a rectangular hollow profile with an upper belt and a lower belt and two thin sheets that form the side walls and the upper and connect the lower strap.
  • the alternating bending strength of such a shaft rod is considered higher than that of an aluminum shaft rod due to the material used.
  • the US 5,345,974 discloses a shaft rod made of a fiber composite material, wherein the shaft is similar stiff as a metal elements existing shaft but easier.
  • this profile may be optimized. It turns out, however, that under dynamic loading, despite greater rigidity of the profile in the middle, considerable deflection of the shaft rod can be observed.
  • the shaft rod according to the invention has, for example, a box profile cross-section, an I-section or a C-section, wherein the cross-sectional profile has a reduced mass in a central section.
  • This can be done, for example, that the existing upper and / or the existing lower belt is emaciated towards the center, ie that it has a greater thickness at its ends than in the vicinity of its center.
  • the mass of the shaft rod is concentrated at its ends.
  • the mass of the central portion is reduced, so that inertial forces to be overcome in accelerating and decelerating the shaft rod are reduced.
  • the rigidity is substantially maintained, so that the dynamic deflection of the shaft rod is reduced.
  • the reduction of the cross-sectional area of the upper belt and / or the lower belt from the shaft rod end to the shaft rod center is primarily a reduction of the thickness of the belt in question to be measured vertically on the shaft rod.
  • the variation of the thickness can be gradual or in stages.
  • the straps in one piece as well as in several parts.
  • the outer height of the shaft rod remains constant.
  • the upper and lower belts each have a narrow strip-shaped upper and lower outer sides, which are oriented parallel to each other.
  • the upper and lower straps are interconnected by at least one or two sidewalls, so that either an open profile or a closed profile (box profile) is produced.
  • the at least one side wall is preferably relatively thin.
  • connecting elements extending from one strap to the other may be provided between the upper strap and the lower strap.
  • the connecting elements are preferably relatively low-mass rigid elements, which are in particular pressure-resistant. They ensure sufficient dimensional stability.
  • the support body may be formed as low-mass foam body, honeycomb body or the like. It allows the formation of particularly thin side walls, which are then still sufficiently rigid and even under dynamic load show no tendency to bulge.
  • the side walls are at least partially dimensioned so thick that at any point guide elements can be attached, which is required, for example, when the shaft rod is loaded in the loom by the warp threads with a transverse force acting on the shaft rod.
  • the parts of the shaft rod may be made of metal, such as aluminum or stainless steel or fiber composites.
  • a preferred embodiment of the shaft rod has two thin light side walls made of fiber composite material, aluminum sheet or very thin sheet steel. Together with the varying cross-section belts they form a rectangular hollow body.
  • the side walls are connected at least over part of the length with a support body.
  • This support body consists for example of honeycomb made of aluminum or phenol resin-reinforced fiber paper. It can also find a core of hard foam application.
  • the support body fills the entire cavity - at least as far as the space is not needed, for example, to accommodate at the ends of the shaft rod, the corner joint for the attachment of the side supports. It may also be necessary to leave space for the attachment of drive parts.
  • Said support body can take over the function of the above-mentioned connecting element together with the side walls.
  • the belt of the shaft rod which is remote from the heddle support rail has a cross section changing along its longitudinal direction.
  • the belt adjacent to the heald support rail can have a uniform cross section.
  • Such a shaft rod also achieves the required rigidity due to the stiffness of the heddle support rail. Again, however, the mass of a central portion of the shaft rod is reduced compared to correspondingly large portions of the shaft rod, which adjoin the shaft rod ends.
  • the mass reduction of the shaft rod, in particular in the central region while maintaining the outer contour over the entire shaft rod length allows the design of shaft rods whose dynamic load capacity is increased in comparison to known shaft rods.
  • FIG. 1 shows a weaving shank 1 is illustrated, which has an upper shaft rod 2, a lower shaft rod 3 and two side supports 4, 5.
  • the shaft rod 2 as is apparent from Figure 2, consists of an extruded aluminum profile, which is designed as a box hollow profile. It has two side walls 8, 9, which form flat sides. Above and below each straps 11, 12 are provided, which are integrally connected to the side walls 8, 9 and enclose an inner space 13. The cross section of this shaft rod 2 is unchanged over the length thereof.
  • Figure 3 illustrates a modified variant of such a conventional shaft rod, which is designed as a two-chamber profile with a longitudinal intermediate belt 10. He has two interiors 13, 14. A part of the shaft rod can be milled in particular in the region of its upper corners in order to facilitate the connection of the side supports 4, 5.
  • the shaft rod according to the invention differs by the design of the straps 11, 12 and any intermediate straps 10.
  • the straps 11, 12 a height, ie vertically measured thickness H on that varies along the longitudinal direction 15.
  • the upper belt 11 has a preferably flat outer side 16 which extends straight in the longitudinal direction 15.
  • the belt 11 has an inside 17, which is curved, for example.
  • the thickness H is measured between the inner side 17 and the outer side 16.
  • the curvature of the inner side 17 is set so that the thickness H in a central region 18 of the belt 11 is substantially lower than in Schaftstabend Scheme Scheme 19, 21st
  • the lower belt 12 may also have a variable thickness H along the longitudinal direction 15. Again, its inner side 22 is not parallel to its outside of the adjacent Litzentragschiene 2 facing outside 23. In the Schaftstabend Scheme Scheme 19, 21, the straps 11, 12 are thus thicker than in the central region 18th
  • a support member 24 may be arranged, which is preferably arranged centrally between the Schaftend Schemeen 19, 21.
  • This support element 24 may be formed, for example, by a web made of carbon fiber reinforced composite material, by an aluminum web, a steel prop or the like. It may be integrally formed with the straps 11, 12, or glued or welded to them.
  • the shaft rod 2 according to FIG. 4 is shown in cross section in FIG. It comprises, for example, an aluminum body comprising the side wall 8, the straps 11, 12 and an extension 25 of the wall 8 which extends downwardly beyond the lower strap 12 to form a holder for the heddle bar 6.
  • FIG. 6 illustrates this base body in the form of a shaft rod 2 in addition to a heddle support rail 6 in perspective.
  • the basic body can be used, for example, as a section of a Extruded aluminum profiles are produced, which is initially cut to length by an endless profile.
  • the desired profile of the straps 11, 12 can be produced, for example, by milling the inner sides 17, 22.
  • the side wall 9 are added, which is provided for example in the form of a thin sheet. It can be attached to the straps 11, 12 by gluing or welding.
  • the shaft rod thus created has a lower weight per unit length in its middle region 18 (FIG. 4) than in its end regions 19, 21.
  • the middle region is therefore subject to reduced dynamic loads during operation. It can be seen that the shaft rod 2 allows higher engine speeds and the bridging of larger web widths than conventional shaft rods. It shows that the reduction in stiffness caused by the weight reduction in the central region 18 is far exceeded by the reduction of the dynamic loads.
  • the belt 12 which may need only have a small height or thickness H, if necessary, even over its entire length, as it is present anyway in the middle area 18, for example.
  • the stiffening of the shaft rod 2 in the lower This is especially true for embodiments in which the heddle support rail 6 with the extension 25 is fixed and in particular immovably connected in the longitudinal direction. Tensile and compressive stresses resulting from the bending load of the shaft rod are then absorbed by the heddle support rail.
  • the profile illustrated in FIG. 6 can also be used without the side wall 9 as an open profile.
  • the side wall 8, as illustrated in FIG. 5, can be oriented in alignment with the extension 25 or also approximately centrally with respect to the straps 11, 12. In this case, a modified I-profile is obtained.
  • the straps 11, 12 are formed in the embodiment according to the figures 4 to 6 as elongated wedges. At this time, the thickness H of the straps 11, 12 gradually decreases from the ends toward the center. However, the thickness reduction can, as the embodiment of Figures 7, 8, 9, also take place gradually.
  • the straps 11, 12 are made for example of fiber composite material.
  • the straps 11, 12 may for example consist of individual rods 11a, 11b, 11c and 12a, 12b, 12c of carbon fiber composite material, for example, which have different lengths and are glued together.
  • the outer rods 11a, 12a may be formed continuous, while the shorter rods 11b, 11c, 12b, 12c are arranged flush at the ends of the shaft rod 2 thereafter. This results in steps 26, 27, in which the thickness of the respective belt, starting from the Schaftstabend Geb 19 and 21, to the central region 18th reduced.
  • the steps can be straight or inclined as ramps.
  • the straps 11, 12 which are stepped in this way can be connected to sheets or thin plate-like elements made of fiber composite material which form the side walls 8, 9.
  • a support body 28 which is formed for example as a honeycomb body.
  • honeycombs may be formed from aluminum sheet, resin impregnated paper or other suitable lightweight construction material. They are preferably at least one sidewall, e.g. the side wall 8, but preferably glued to both side walls 8, 9.
  • one or more holders 29 are glued, which carry the heddle support rail 6.
  • the holders 29 are glued to the side walls 8, 9.
  • the trained lightweight fuel rod has in its central region 18 a reduced weight.
  • the adjoining shaft end regions 19, 21 have a particularly high rigidity due to the straps 11, 12, which are made stronger here, so that overall the shaft bending under dynamic load is minimized.
  • FIGS 10 and 11 illustrate a shaft rod 2, which substantially coincides with the shaft rod 2 of Figures 7 to 9.
  • the lower belt 12 is formed with a constant thickness H.
  • the upper strap 11, which is remote from the heddle support rail 6, is stepped, as described above. It consists of elongated cuboidal parts 11a, 11b, 11c, which are glued together and for example consist of a fiber composite material.
  • the side walls 8, 9 are glued. They extend beyond the lower belt 12 down and take between each holder 29, 30 on.
  • These may be made of metal or plastic, preferably fiber-reinforced plastic.
  • This shaft rod 2 is characterized by a high dynamic bending resistance.
  • the existing in its middle section weight reduction with simultaneous rigid design of the more outer regions of the shaft rod allows the achievement of maximum operating speeds or engine speeds.
  • a shaft rod 2 according to the invention has a particularly low mass, in particular in its central region.
  • the shaft rod has an upper belt 11 and a lower belt 12, which have a smaller thickness in the shaft rod center region.
  • the acceleration forces induced load in the middle of the shaft rod is much lower than at conventional constructions. Due to the reduced acceleration forces, the deflection of the shaft rods in the center of the shaft is lower and the shaft thus produced is much better for applications in very fast weaving machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)

Claims (22)

  1. Lamette pour un cadre de lisses (1) :
    avec une tringle porte-lisses (6) qui est conçue pour recevoir les oeillets d'extrémité des lisses, et
    avec un corps de support qui possède deux côtés étroits qui sont formés par une membrure supérieure (11) et une membrure inférieure (12) et au moins un côté large qui est constitué par une paroi latérale (8), au moins une des membrures (11, 12) possédant une épaisseur variable (H) dans le sens de son extension longitudinale (15),
    caractérisée en ce que
    la membrure (11) présentant une épaisseur variable (H) possède dans les zones d'extrémité de la lamette (19, 21) une épaisseur (H) qui est plus grande que dans la zone intermédiaire (18).
  2. Lamette selon la revendication 1, caractérisée en ce que la membrure (11) présentant une épaisseur variable (H) s'étend d'une zone d'extrémité de la lamette (19) à l'autre zone d'extrémité de la lamette (21).
  3. Lamette selon la revendication 1, caractérisée en ce que la membrure (12) voisine de la tringle porte-lisses (6) présente une section transversale constante.
  4. Lamette selon la revendication 1, caractérisée en ce que les deux membrures (11, 12) présentent dans les zones d'extrémité de la lamette (19, 21) une épaisseur (H) qui est supérieure à celle d'une zone intermédiaire (18).
  5. Lamette selon la revendication 2, caractérisée en ce que la membrure (11, 12) présente des échelons (26, 27) au niveau desquels l'épaisseur de la membrure (11, 12) change.
  6. Lamette selon la revendication 2, caractérisée en ce que la membrure (11, 12) présente des segments conformés en coin.
  7. Lamette selon la revendication 2, caractérisée en ce que la membrure (11, 12) est courbée en forme d'arc de cercle sur sa face intérieure (17, 22).
  8. Lamette selon la revendication 2, caractérisée en ce que les deux membrures (11, 12) possèdent une face extérieure (16, 23) rectiligne dans la direction longitudinale.
  9. Lamette selon la revendication 1, caractérisée en ce que la paroi latérale (8), au nombre d'au moins une, et les membrures (11, 12) sont faites dans le même matériau.
  10. Lamette selon la revendication 1, caractérisée en ce que la paroi latérale (8), au nombre d'au moins une, et les membrures (11, 12) sont assemblées en étant fabriquées d'une seule pièce.
  11. Lamette selon la revendication 1, caractérisée en ce que la paroi latérale (8), au nombre d'au moins une, est faite dans un matériau composite renforcé de fibres.
  12. Lamette selon la revendication 1, caractérisée en ce que la paroi latérale (8), au nombre d'au moins une, est faite dans un métal.
  13. Lamette selon la revendication 1, caractérisée en ce que les membrures supérieure et inférieure (11, 12) sont faites dans un matériau composite renforcé de fibres.
  14. Lamette selon la revendication 1, caractérisée en ce que les membrures supérieure et inférieure (11, 12) sont faites dans un métal.
  15. Lamette selon la revendication 1, caractérisée en ce qu'il est prévu une seconde paroi latérale (9) qui forme un profil en caisson avec l'autre paroi latérale (8), la membrure supérieure (11) et la membrure inférieure (12).
  16. Lamette selon la revendication 1, caractérisée en ce qu'un corps d'appui (28) est disposé entre la membrure supérieure (11) et la membrure inférieure (12).
  17. Lamette selon la revendication 16, caractérisée en ce que le corps d'appui (28) est un corps en nids d'abeilles.
  18. Lamette selon la revendication 16, caractérisée en ce que le corps d'appui (28) est un corps en mousse.
  19. Lamette selon la revendication 12, 14, 16, caractérisée en ce que les pièces faites en métal sont reliées ensemble par soudage et les autres pièces par collage.
  20. Lamette selon la revendication 1, caractérisée en ce qu'un élément de liaison (24) est disposé entre la membrure supérieure (11) et la membrure inférieure (12).
  21. Lamette selon la revendication 20, caractérisée en ce que l'élément de liaison (24) est placé dans une partie éloignée des zones d'extrémités de la lamette (19, 21).
  22. Métier à tisser automatique avec au moins un cadre de lisses qui possède au moins une lamette (2) selon l'une des revendications précédentes.
EP05023399A 2004-11-17 2005-10-26 Barre pour cadre à lisses Expired - Fee Related EP1659200B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004055381A DE102004055381B3 (de) 2004-11-17 2004-11-17 Schafstab für Webschäfte

Publications (2)

Publication Number Publication Date
EP1659200A1 EP1659200A1 (fr) 2006-05-24
EP1659200B1 true EP1659200B1 (fr) 2007-10-17

Family

ID=35539373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05023399A Expired - Fee Related EP1659200B1 (fr) 2004-11-17 2005-10-26 Barre pour cadre à lisses

Country Status (5)

Country Link
US (1) US7264022B2 (fr)
EP (1) EP1659200B1 (fr)
JP (1) JP4134146B2 (fr)
CN (1) CN1776051B (fr)
DE (2) DE102004055381B3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006057833B3 (de) * 2006-12-08 2008-09-04 Groz-Beckert Kg Schaftstab für einen Webschaft
EP1975293B1 (fr) * 2007-03-26 2012-01-25 Groz-Beckert KG Cadre à lisse en tôle
EP2037020B1 (fr) * 2007-09-12 2015-11-04 Groz-Beckert KG Bâton profilé et barre de support pour un métier à tisser
EP2202338B1 (fr) * 2008-12-23 2014-04-02 Groz-Beckert KG Cadre à lisses avec un joint d'angle robuste
ES2973865T3 (es) * 2019-09-10 2024-06-24 Groz Beckert Kg Peine con una pluralidad de láminas

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088496A (en) * 1960-11-08 1963-05-07 Cambridge Wire Cloth Loom harness
AT258224B (de) * 1965-05-19 1967-11-10 Grob & Co Ag Schaftstab für Webschäfte
CH525352A (de) * 1968-09-13 1972-07-15 Contraves Ag Stab mit hoher Biegesteifigkeit und Verwendung desselben
US3948296A (en) * 1972-06-30 1976-04-06 Grob & Co. Aktiengesellschaft Frame stave for heald frame of weaving machine
CH590354A5 (fr) * 1975-03-25 1977-08-15 Grob & Co Ag
US4022252A (en) * 1976-02-05 1977-05-10 Maruyama Seisakusho Kabushiki Kaisha Heddle frame for a high speed weaving machine
CH610993A5 (fr) * 1976-06-08 1979-05-15 Sulzer Ag
CH637702A5 (de) * 1979-07-13 1983-08-15 Grob & Co Ag Webeschaft.
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
DE3702524A1 (de) * 1987-01-28 1988-08-11 Grob & Co Ag Tragstab fuer einen webschaft
DE59102673D1 (de) * 1990-12-20 1994-09-29 Audi Ag Mittelsäule an einer karosserie eines personenkraftwagens.
DE4101512C1 (fr) * 1991-01-19 1992-02-06 Grob & Co Ag, Horgen, Zuerich, Ch
EP0504102A1 (fr) * 1991-03-14 1992-09-16 Gebrüder Sulzer Aktiengesellschaft Traverse pour lame et lame pour un métier à tisser
EP0504101A1 (fr) * 1991-03-14 1992-09-16 Gebrüder Sulzer Aktiengesellschaft Traverse pour lame et lame pour un métier à tisser
EP0504104A1 (fr) * 1991-03-14 1992-09-16 Gebrüder Sulzer Aktiengesellschaft Traverse pour lame et lame pour un métier à tisser
IT1251303B (it) * 1991-09-11 1995-05-08 Actex Spa Quadro porta licci alleggerito per telai di tessitura e dispositivo di fissaggio autocentrante dei fiancali di detto quadro
DE29604326U1 (de) * 1996-01-13 1996-06-05 Schmeing GmbH & Co., 46325 Borken Webschaft mit Litzentragschiene für Webmaschinen
EP0874931B1 (fr) * 1996-01-13 1999-07-28 Firma Schmeing GmbH & Co. Procede de fabrication d'une lamette pour lames cadres a partir d'un profile metallique creux
DE19917791C1 (de) * 1999-04-20 2000-09-28 Schmeing Gmbh & Co Verfahren zur Herstellung eines Schaftstabes für Webschäfte
DE10024207A1 (de) 2000-05-17 2002-01-24 Man Nutzfahrzeuge Ag Kolbenkühlung für Brennkraftmaschinen
DE10116813B4 (de) * 2001-04-04 2010-04-01 Grob Textile Ag Webschafteckverbindung
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
DE10349381B4 (de) * 2003-10-21 2005-08-25 Groz-Beckert Kg Webschaft mit neuartigem Eckverbinder
DE10349382B3 (de) * 2003-10-21 2005-06-09 Groz-Beckert Kg Webschaft in Verbundbauweise

Also Published As

Publication number Publication date
DE102004055381B3 (de) 2006-04-06
JP4134146B2 (ja) 2008-08-13
CN1776051B (zh) 2010-12-29
DE502005001718D1 (de) 2007-11-29
CN1776051A (zh) 2006-05-24
EP1659200A1 (fr) 2006-05-24
US7264022B2 (en) 2007-09-04
US20060102243A1 (en) 2006-05-18
JP2006144215A (ja) 2006-06-08

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