EP1659200B1 - Schaftstab für Webschäfte - Google Patents
Schaftstab für Webschäfte Download PDFInfo
- 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
Links
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 238000009941 weaving Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 241000264877 Hippospongia communis Species 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 206010006895 Cachexia Diseases 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 208000026500 emaciation Diseases 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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)
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 (de) | 2006-05-24 |
EP1659200B1 true EP1659200B1 (de) | 2007-10-17 |
Family
ID=35539373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05023399A Expired - Fee Related EP1659200B1 (de) | 2004-11-17 | 2005-10-26 | Schaftstab für Webschäfte |
Country Status (5)
Country | Link |
---|---|
US (1) | US7264022B2 (zh) |
EP (1) | EP1659200B1 (zh) |
JP (1) | JP4134146B2 (zh) |
CN (1) | CN1776051B (zh) |
DE (2) | DE102004055381B3 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006057833B3 (de) * | 2006-12-08 | 2008-09-04 | Groz-Beckert Kg | Schaftstab für einen Webschaft |
EP1975293B1 (de) * | 2007-03-26 | 2012-01-25 | Groz-Beckert KG | Litzentragschiene aus gebogenem Blech |
EP2037020B1 (de) * | 2007-09-12 | 2015-11-04 | Groz-Beckert KG | Profilstab und Tragstab für einen Webschaft |
EP2202338B1 (de) * | 2008-12-23 | 2014-04-02 | Groz-Beckert KG | Webschaft mit robuster Eckverbindung |
EP3792382B1 (de) * | 2019-09-10 | 2024-02-07 | Groz-Beckert KG | Webblatt mit einer vielzahl von lamellen |
Family Cites Families (26)
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 (zh) * | 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 (zh) * | 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 |
ES2063531T3 (es) * | 1990-12-20 | 1995-01-01 | Audi Ag | Montante medio en la carroceria de un turismo. |
DE4101512C1 (zh) * | 1991-01-19 | 1992-02-06 | Grob & Co Ag, Horgen, Zuerich, Ch | |
EP0504101A1 (de) * | 1991-03-14 | 1992-09-16 | Gebrüder Sulzer Aktiengesellschaft | Schaftstab und Schaftrahmen für eine Webmaschine |
EP0504102A1 (de) * | 1991-03-14 | 1992-09-16 | Gebrüder Sulzer Aktiengesellschaft | Schaftstab und Schaftrahmen für eine Webmaschine |
EP0504104A1 (de) * | 1991-03-14 | 1992-09-16 | Gebrüder Sulzer Aktiengesellschaft | Schaftstab und Schaftrahmen für eine Webmaschine |
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 |
WO1997025465A1 (de) * | 1996-01-13 | 1997-07-17 | Firma Schmeing Gmbh & Co. | Verfahren zur herstellung eines schaftstabes für webschäfte aus einem metallhohlprofil |
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 |
-
2004
- 2004-11-17 DE DE102004055381A patent/DE102004055381B3/de not_active Expired - Fee Related
-
2005
- 2005-10-26 DE DE502005001718T patent/DE502005001718D1/de active Active
- 2005-10-26 EP EP05023399A patent/EP1659200B1/de not_active Expired - Fee Related
- 2005-11-02 JP JP2005319442A patent/JP4134146B2/ja not_active Expired - Fee Related
- 2005-11-17 US US11/280,387 patent/US7264022B2/en not_active Expired - Fee Related
- 2005-11-17 CN CN200510125484.3A patent/CN1776051B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2006144215A (ja) | 2006-06-08 |
EP1659200A1 (de) | 2006-05-24 |
CN1776051A (zh) | 2006-05-24 |
DE502005001718D1 (de) | 2007-11-29 |
DE102004055381B3 (de) | 2006-04-06 |
US20060102243A1 (en) | 2006-05-18 |
US7264022B2 (en) | 2007-09-04 |
JP4134146B2 (ja) | 2008-08-13 |
CN1776051B (zh) | 2010-12-29 |
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