US20180195211A1 - Connecting member for connecting elements of a shed forming mechanism for a weaving machine with each other - Google Patents

Connecting member for connecting elements of a shed forming mechanism for a weaving machine with each other Download PDF

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Publication number
US20180195211A1
US20180195211A1 US15/741,104 US201615741104A US2018195211A1 US 20180195211 A1 US20180195211 A1 US 20180195211A1 US 201615741104 A US201615741104 A US 201615741104A US 2018195211 A1 US2018195211 A1 US 2018195211A1
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United States
Prior art keywords
connecting member
body portion
component
tackle
forming mechanism
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Abandoned
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US15/741,104
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English (en)
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Frederik De Medts
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Individual
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Individual
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Assigned to NV MICHEL VAN DE WIELE reassignment NV MICHEL VAN DE WIELE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DE MEDTS, Frederik
Publication of US20180195211A1 publication Critical patent/US20180195211A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/40—Constructions of lifting-cords

Definitions

  • the present invention relates to a connecting member which can be used for connecting elements of a shed forming mechanism for a weaving machine with each other.
  • U.S. Pat. No. 5,116,364 discloses a tackle arrangement which can be used in a shed forming mechanism for a weaving machine for lifting and lowering one or a plurality of warp threads for forming a shed.
  • the tackle arrangement comprises a plurality of tackle cords as well as a plurality of pulleys around which the tackle cords are guided.
  • One tackle member comprises a plurality of pulleys which are connected with each other by means of connecting members.
  • One tackle cord is guided downwardly and is connected with a harness cord by means of another connecting member.
  • a spring can be associated with each of the heddles through which warp threads are guided for pretensioning the heddles and the associated warp threads into their lowermost position and for thereby also pretensioning the various cords of the tackle mechanism connected to a respective heddle or a harness cord.
  • WO 2013/128275 A9 discloses a cord connector for connecting a tackle cord of a tackle arrangement to at least one harness cord or at least one heddle.
  • This known cord connector comprises two components made of plastics material. One of these components is fixedly attached to a tackle cord, while the other component comprises a hook member for releasably attaching one or a plurality of harness cords or heddles thereto.
  • the two connector components can be releasably interengaged for coupling and decoupling a harness cord or a heddle to and from a tackle arrangement of a shed forming mechanism.
  • this object is achieved by a connecting member for connecting elements of a shed forming mechanism for a weaving machine with each other, comprising at least two components made of materials having different densities.
  • components By providing at least two components of a connecting member such that these components are made of materials having different densities, components, on the one hand, can be adapted to the specific requirements, for example, for coupling to cords or other members of the shed forming mechanism, while at least one component can be provided of a material having a higher density so that the connecting member can be provided with an increased mass.
  • a connecting member By providing such a connecting member with at least one component having a relatively high mass, an additional force can be applied to the various components, in particular the cords of a shed forming mechanism, for putting these cords under increased tension.
  • This increased tension reduces the risk of undesired entanglement of immediately adjacent cords or threads and, on the other hand, reduces the risk that components, in particular cords of the shed forming device, which, for example, are connected to each other by hooks or such connecting arrangements, become decoupled from each other.
  • connecting member is of particular advantage in high-density harnesses where a plurality of tackle arrangements and harness cords and heddles, respectively, are provided in close proximity and, therefore, there is a high risk that, although the heddles are pretensioned by springs engaging the lower ends thereof, an obstruction between the hook members which are provided in the upper portion of the shed forming mechanism (for example, a Jacquard machine) and the heddles can occur.
  • At least one component may be a component made of one piece, said piece being made of plastics material or metal material.
  • At least one component may comprise at least two pieces made of materials having different densities, at least one of said pieces being made of metal material and/or at least one of said pieces being made of plastics material.
  • the connecting member may further comprise a component comprising a preferably elongated body portion, said body portion at least partially being made of a first material.
  • the connecting member may further comprise a connecting portion at at least one end of said body portion, said connecting portion providing a further component, at least one connecting portion at least partially being made of a second material, said first material having a higher density than said second material.
  • the connecting portions can be provided with a quite complex shape in an easy manner, while the body portion can primarily fulfil the function of providing an increased mass of the connecting member.
  • a connecting portion may be provided at each end of the body portion.
  • a connecting portion is made of plastics material
  • at least one connecting portion may be a component made of one material, preferably may be a component made of one piece.
  • the body portion may be provided as a component made of one material, preferably may be a component made of one piece, and/or a second component may be embedded into the material of the body portion providing a first component and may be made of a material having a higher density than the material of the body portion.
  • the body portion may be provided in a component made of at least two pieces, at least one of said pieces being made of metal material and/or at least one of said pieces being made of plastics material.
  • the body portion may comprise a core member made of plastics material and a sleeve member made of metal material and surrounding the core member.
  • a core member made of plastics material
  • a sleeve member made of metal material and surrounding the core member.
  • the component may comprise a preferably plate-shaped body portion and at least one preferably plate-shaped additional mass member made of metal material.
  • At least one connecting portion may be integrally cast to said body portion, for example by injection molding. Further, at least one connecting portion may be fixed to the body portion by positive locking. According to a further alternative, the body portion may be fixed to at least one connecting portion by gluing. Further the connecting portions may be provided as integral portions of the body portion.
  • the shed forming mechanism comprises a tackle arrangement
  • at least one of the components of a connecting member which component is preferably made of metal material, is arranged for connecting to a pulley of a tackle member of a shed forming mechanism for a weaving machine.
  • one of the components which preferably is made of plastics material, may be arranged for connecting to a tackle cord or at least one harness cord or heddle of a shed forming mechanism for a weaving machine.
  • a pulley of a tackle member of a shed forming mechanism for a weaving machine may be rotatably carried.
  • the density of a material having a higher density may be at least 120% of the density of a material having a lower density, and/or the density of a material having a lower density may be in the range of 0.9 g/cm 3 to 1.5 g/cm 3 .
  • the present invention further relates to a cord connector for connecting a tackle cord to at least one harness cord or heddle of a shed forming mechanism for a weaving machine, comprising at least one connecting member according to the present invention.
  • the present invention is directed to a tackle member for a shed forming mechanism for a weaving machine, comprising at least one connecting member according to the present invention as well as at least one pulley rotatably connected to said at least one connecting member.
  • At least one axle member preferably made of metal material, providing a component of a connecting member and rotatably supporting the pulley may be carried on another component, preferably comprising a piece made of plastics material, of at least one, preferably two, of said connecting members.
  • the present invention further relates to a shed forming mechanism for a weaving machine, comprising at least one connecting member according to the present invention and/or at least one cord connector according to the present invention and/or at least one tackle member according to the present invention.
  • This shed forming mechanism may be arranged such that one of said components of at least one connecting member is connected to a tackle cord and another one of said components of the same connecting member is connected to at least one harness cord or heddle, preferably wherein said component connected to said tackle cord and said component connected to said at least one harness cord or heddle are made of plastics material.
  • the present invention further relates to a weaving machine comprising such a shed forming mechanism.
  • FIG. 1 is a perspective view of a connecting member providing a cord connector for connecting a tackle cord to at least one harness cord or heddle;
  • FIG. 2 is a side view of the cord connector of FIG. 1 ;
  • FIG. 3 is a sectional view of one end portion of the cord connector of FIG. 1 ;
  • FIG. 4 is a partial sectional view of the other end portion of the cord connector of FIG. 1 ;
  • FIG. 5 is an exploded view of a tackle member comprising two connecting members
  • FIG. 6 is a side view of a connecting member according to an other embodiment
  • FIG. 7 shows the connecting member of FIG. 6 connected to two harness cords
  • FIG. 8 shows a process of manufacturing the connecting member of FIGS. 6 and 7 ;
  • FIG. 9 is a view corresponding to FIG. 8 showing an alternative embodiment of a process of manufacturing a connecting member
  • FIG. 10 shows a jacquard system including a connecting member for connecting a tackle cord with a harness cord.
  • FIGS. 1 to 9 various embodiments of connecting members to be used in a shed forming mechanism of a weaving machine, for example in a jacquard machine, will be explained, such a shed forming mechanism will be explained with respect to FIG. 10 .
  • FIG. 10 shows a portion of a jacquard system or shed forming mechanism 100 , respectively.
  • This shed forming mechanism 100 in its upper part comprises a tackle arrangement 102 which, in the depicted embodiment, comprises a tackle member 104 .
  • a first tackle cord 106 is connectable to knifes 108 , 110 which, for example, can be movable in counter phase.
  • a second tackle cord 112 at a first end 114 thereof, is fixed to a non-movable frame portion 116 and, at a second end 118 thereof, is connected to a harness cord 120 of a harness 122 by means of a connector 12 which will be explained in detail later on.
  • the harness 122 comprises the harness cord 120 which, at its lower end, is connected to a heddle 124 which, at its lower end, is fixed to a non-movable frame portion 126 via a return spring 128 .
  • a connecting member 10 providing a cord connector 12 for the shed forming mechanism for a weaving machine is shown.
  • This cord connector 12 can be used for connecting a tackle cord 112 of tackle arrangement 102 , for example, of a Jacquard machine, with at least one or a plurality of harness cords 120 or heddles 124 , respectively.
  • Such heddles 124 may have an eyelet 130 through which a warp yarn of a weaving machine is guided.
  • the connecting member 10 and cord connector 12 respectively, comprises three components 14 , 16 , 18 .
  • the first component 14 provides an elongated body portion 20 of the connecting member 10 and, in the shown embodiment, is a component made of one piece.
  • the component 14 is made of a material having a high density.
  • the component 14 may be made of metal material.
  • respective connecting portions 26 , 28 providing the other two components 16 , 18 of the connecting member 10 are fixed to the body portion 20 .
  • the connecting portion 26 providing the component 16 is arranged as a hook-shaped member for detachably connecting one or a plurality of harness cords or one or a plurality of heddles to the connecting member 10 .
  • this connecting portion 26 may be attached to the end 22 of the body portion 20 by integral casting, for example, overmolding a fixing portion 30 provided at the end 22 of the body portion 20 with the plastics material used for generating the connecting portion 26 , for example by means of an injection molding process.
  • This plastics material of the connecting portion 26 has a lower density than the metal material of the body portion 20 , and allows the provision of a quite complex shape, in particular the flexible hook shape of the connecting member 26 .
  • the connecting member 28 providing the component 18 fixedly attached to the end 24 of the body portion 20 is also made of plastics material, for example, the same plastics material used for making the connecting portion 26 .
  • the connecting portion 28 may be fixed to the end 24 of the body portion 20 by introducing a fastening protrusion 32 of the connecting portion 28 into a fastening opening 34 provided in the end 24 of the body portion 20 .
  • a screw connection or a connection provided by a plurality of interengaging teeth may be used for providing positive locking of the connecting portion 26 with the body portion 20 , as can be seen in FIG. 3 .
  • the body portion 20 may be fixedly connected to the connecting portion 28 by gluing.
  • the connecting portion 28 which, as is the case with the connecting portion 26 , preferably is a component made of one piece, is arranged for connecting a tackle cord of a tackle arrangement, for example, of a Jacquard machine, to the connecting member 10 .
  • a tackle cord may be connected to the connecting portion 28 by integral casting or by providing a knot connection or by a matching connecting component.
  • one or both of the connecting portions 26 , 28 may composed of a plurality of pieces which, for example all may be made of plastics material.
  • one such piece of connecting portion 28 may be fixedly attached to the body portion 20
  • an other piece of connecting portion 28 may be fixedly attached to a tackle cord and releasably attachable to the piece fixedly attached to the body portion 20
  • each one of these components 14 , 16 , 18 can be provided in an optimized manner for fulfilling the respective requirements. While the two connecting portions 16 , 18 can be provided with quite complex shapes for allowing the connection of respective cords thereto, the body portion 20 can be provided as a quite heavy component due to the use of a material having a higher density than the material used for providing the connecting portions 16 , 18 .
  • the body portion 20 can be provided as a component having a plurality of pieces.
  • the elongated body portion 20 can be provided with an elongated core member made of plastics material which is surrounded by a sleeve made of metal material or made of a plastics material having a higher density than the plastics material used for making the core member and/or the plastics material used for making the two connecting portions 26 , 28 .
  • the sleeve member provides an additional mass for applying an increased load to a tackle cord attached to this cord connector 12 , while not being used for transmitting any forces.
  • the component 14 providing the body portion 20 may be made of a plastics material having a higher density than the plastics material used for making at least one of the two connecting portions 26 , 28 . While these two connecting portions 26 , 28 are preferably made of the same plastics material, different plastics materials or a metal material for at least one of these two connecting portions 26 , 28 may be used.
  • FIG. 5 shows a tackle member 40 a that can be used in the shed forming mechanism, for example, a Jacquard machine, for a weaving machine.
  • the tackle member 40 a shown in FIG. 5 comprises three pulleys 42 a, 44 a and 46 a, which are connected to each other by means of two connecting members 48 a, 50 a.
  • Each one of these two connecting members comprises an elongated body portion 52 a providing a piece of one component 54 a of the respective connecting members 48 a, 50 a.
  • the body portion 52 a is preferably made of plastics material and therefore can be provided with a quite complex shape.
  • the two body portions 52 a of the connecting members 48 a, 50 a may be arranged such as to be fixed to each other while providing a connection of the pulleys 42 a, 44 a, 46 a.
  • Axle members 56 a, 58 a, 60 a preferably made of metal material are provided as further components 62 a, 64 a, 66 a of the connecting members 48 a, 50 a. It is to be noted that, in an assembled condition, these axle members 56 a, 58 a, 60 a may be inserted with their ends into respective openings provided on the body portions 52 a. Therefore, each one of the axle members 56 a, 58 a, 60 a provides a component 62 a, 64 a, 66 a for both of the connecting members 48 a, 50 a.
  • Each one of the two body portions 52 a is provided with a recess 68 a for receiving an additional mass member 70 a.
  • this additional mass member 70 a is held between the two body portions 52 a of the two connecting members 48 a, 50 a. Therefore, this additional mass member 70 a, in the sense of the present invention, can be considered as providing an additional piece for each one of the two components 54 a of the two connecting members 48 a, 50 a, such that each one of these two components can be considered as being a component made of two pieces, i.e. the respective body portion 54 a and the additional mass member 70 a.
  • the body portion 20 made of metal material and therefore providing an additional mass, is also used to transmit the forces applied to the connecting member 10
  • the additional mass member 70 a which preferably is made of metal material or a plastics material having a higher density than the plastics material used for making the body portions 52 a, is not used for transmitting any forces, but is only provided for increasing the overall mass of the tackle member 40 a.
  • a plurality of additional mass members 70 a may be provided. For example, there may be separated mass members for each one of the two body portions 52 a of the connecting members 48 a, 50 a.
  • the additional mass member 70 a or the plurality of such mass members may be attached to the body portions 52 a by insertion in respective recesses and/or by gluing and/or by integral casting, for example, overmolding. While the arrangement of the additional mass member 70 a between the two body portions 52 a provides a low-volume construction of the tackle member 40 a, such additional mass members may alternatively or additionally be provided on the sides of the body portions 52 a facing away from each other.
  • FIGS. 6 and 7 A further embodiment of a connecting member 10 b and cord connector 12 b, respectively, is shown in FIGS. 6 and 7 .
  • This connecting member 10 b comprises a body portion 20 b made of plastics material, for example, in an injection molding process.
  • the body portion 20 b at its two ends 22 b, 24 b, comprises as integral portions thereof the two connecting portions 26 b, 28 b.
  • two heddle cords 120 , 120 ′ are non-detachably connected to the body portion 20 b.
  • a tackle cord can be connected to the body portion 20 b.
  • an additional mass member 70 b is provided within the body portion 20 b of the connecting member 10 b.
  • This additional mass member 70 b provides a further component of the connecting member 10 b which, for increasing the mass of the connecting member 10 b, is made of a material having a higher density than the plastics material used for providing the body portion 20 b.
  • this additional mass member 70 is made of metal material which, during the injection molding process for manufacturing the connecting member 10 b, becomes embedded into the material used for providing the body portion 20 b.
  • FIG. 8 is a schematic drawing for showing the injection molding process for manufacturing the connecting member 10 b shown in FIGS. 6 and 7 .
  • the additional mass member 70 b is positioned within a mold 72 b and is held in a predetermined positioning, for example, by protrusions provided on the interior surface of mold 72 b. It is to be noted, that the or even a plurality of such additional mass members 70 can be positioned at any suitable location within the mold 72 b and the body portion 20 b, respectively. The one or two needed heddle cords will extend out of mold 72 b.
  • the molten plastics material is injected into the interior space of mold 72 , such as to surround the additional mass member 70 b and the portion of the heddle cord/s extending within the interior space of mold 72 b, and such that the additional mass member 70 b and the heddle cord/s become embedded into the plastics material.
  • the mold 72 b is removed, such that the finished connecting member 10 is provided.
  • FIG. 9 An alternative way of manufacturing a connecting member is shown in FIG. 9 .
  • the connecting member manufactured according to FIG. 9 is quite similar to the one shown in FIGS. 1 to 4 . Therefore, the same reference signs as used in FIGS. 1 to 4 are used in association with FIG. 9 .
  • the connecting member manufactured according to FIG. 9 comprises a body portion 20 made, for example, of metal material and providing a first component 14 of the connecting member. This body portion 20 with its two end portions is introduced into two molds 72 , 72 ′. The molten plastics material then is injected into molds 72 , 72 ′ for providing the two connecting portions integrally cast to the body portion 20 and providing two additional components of the connecting member made of a material having a lower density than the material of the body portion 20 . After the plastics material has hardened, the two molds 72 , 72 ′ are removed.
  • a shed forming mechanism for a weaving machine may comprise a plurality of the cord connectors 12 shown in FIG. 1 , in particular may comprise one such cord connector in association with each warp yarn used in a weaving machine or in association with a group of warp yarns which have to be moved in common. Further, a plurality of such tackle members 40 a shown in FIG. 5 may be provided in the shed forming mechanism for a weaving machine.
  • such a tackle arrangement may comprise at least one tackle member 40 a provided with an increased mass due to the use of a connecting member having at least one component or at least one piece of one component made of rather heavy, high-density material, for example, metal material.
  • tables 1 to 3 some examples of materials having a lower density (table 1) and examples of materials having a higher density (tables 2 and 3) are shown. All the materials listed in table 1 and having the lower density are plastics materials and, for example, may be used for making the connecting portions 26 , 28 providing components of the cord connector 12 and/or for making the plate shaped body portions 52 a providing pieces of the connecting members 54 a.
  • the pulleys 42 a, 44 a, 46 a also may be made of these materials having the lower density.
  • at least one of these pulleys 42 a, 44 a, 46 a may be made of a material listed in tables 2 and 3 and having the higher density.
  • the materials listed in table 2 also are plastics materials. However, these plastics materials have a remarkably higher density than the plastics materials listed in table 1.
  • the materials listed in table 3 all are metal materials having a density which again is remarkably higher than the density of the materials listed in table 1.
  • the body portion 20 providing a component of the cord connector 12 and/or the additional mass member 70 a providing a piece of a component (the body portions 54 a ) of the tackle member 40 a, as well as the axle members 56 a, 58 a, 60 a also providing components of the tackle member 40 a preferably are made of a material listed in tables 2 and 3 and having the higher density.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Harvester Elements (AREA)
US15/741,104 2015-07-02 2016-06-27 Connecting member for connecting elements of a shed forming mechanism for a weaving machine with each other Abandoned US20180195211A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15175071.8 2015-07-02
EP15175071.8A EP3112509A1 (fr) 2015-07-02 2015-07-02 Pièce de raccordement pour éléments de raccord d'un mécanisme de formation de foule d'un métier à tisser
PCT/EP2016/064816 WO2017001324A1 (fr) 2015-07-02 2016-06-27 Élément de raccordement pour raccorder les uns aux autres des éléments d'un mécanisme de formation de foule pour un métier à tisser

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US20180195211A1 true US20180195211A1 (en) 2018-07-12

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US15/741,104 Abandoned US20180195211A1 (en) 2015-07-02 2016-06-27 Connecting member for connecting elements of a shed forming mechanism for a weaving machine with each other

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EP (2) EP3112509A1 (fr)
WO (1) WO2017001324A1 (fr)

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US6230755B1 (en) * 1998-12-04 2001-05-15 N.V. Michel Van De Wiele Jacquard heddle connecting eye structure
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US20150275405A1 (en) * 2010-12-21 2015-10-01 Nv Michel Van De Wiele Shed-forming device for a weaving machine
US20180044821A1 (en) * 2015-01-22 2018-02-15 Nv Michel Van De Wiele Pulley for installation in a pulley mechanism of a jacquard machine
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US20180320295A1 (en) * 2015-11-04 2018-11-08 Nv Michel Van De Wiele Jacquard machine, face-to-face weaving machine comprising at least one jacquard machine, and method of setting up a jacquard machine

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US5222526A (en) * 1991-03-06 1993-06-29 N.V. Michel Van De Wiele Tackle device for a double lift open-shed jacquard machine
US5626168A (en) * 1994-01-13 1997-05-06 Bnl Limited Double roller elements for jacquard machines
US5671782A (en) * 1994-07-18 1997-09-30 N.V. Michel Van De Wiele Harness to lifting cord three part connector for a jacquard weaving machine
US5678612A (en) * 1994-12-20 1997-10-21 N.V. Michael Van De Wiele Jacquard machine with plural lifter devices
US5813441A (en) * 1996-04-10 1998-09-29 N.V. Michel Van De Wiele Shed forming device for a textile machine with actuator means
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US6186188B1 (en) * 1998-08-28 2001-02-13 Deutsche Institute für Textil und Faserforschung Stuttgart Stifftung des öffentlichen Rechts Weaving machine system and mechanism for coupling lifting devices and warp thread harness cards
US6230755B1 (en) * 1998-12-04 2001-05-15 N.V. Michel Van De Wiele Jacquard heddle connecting eye structure
US6772796B2 (en) * 2001-04-20 2004-08-10 N.V. Michel Van De Wiele Device for attaching temples on a face-to-face weaving machine
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US7168454B2 (en) * 2003-01-16 2007-01-30 N.V. Michel Van De Wiele Harness device for a weaving machine
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US20050081943A1 (en) * 2003-10-21 2005-04-21 Groz-Beckert Kg Heddle shaft with center connector
US20070006930A1 (en) * 2005-06-24 2007-01-11 Groz-Beckert Kg Heald shaft
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US7503352B2 (en) * 2005-07-15 2009-03-17 N.V. Michel Van De Wiele Device and method for locking the connection of a heddle to a harness cord
US20080053555A1 (en) * 2006-07-19 2008-03-06 Groz-Beckert Kg Shaft drive transmission and coupling rod
US20150275405A1 (en) * 2010-12-21 2015-10-01 Nv Michel Van De Wiele Shed-forming device for a weaving machine
US20150122367A1 (en) * 2012-03-01 2015-05-07 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom
US9399830B2 (en) * 2012-03-01 2016-07-26 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom
US9915013B2 (en) * 2014-07-18 2018-03-13 Nv Michel Van De Wiele Shed forming device for a weaving machine
US20180044821A1 (en) * 2015-01-22 2018-02-15 Nv Michel Van De Wiele Pulley for installation in a pulley mechanism of a jacquard machine
US10358747B2 (en) * 2015-01-22 2019-07-23 Nv Michel Van De Wiele Pulley for installation in a pulley mechanism of a jacquard machine
US20180320295A1 (en) * 2015-11-04 2018-11-08 Nv Michel Van De Wiele Jacquard machine, face-to-face weaving machine comprising at least one jacquard machine, and method of setting up a jacquard machine

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WO2017001324A1 (fr) 2017-01-05
EP3112509A1 (fr) 2017-01-04

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