EP3109352B1 - Antriebslamelle von aufhängehaken einer jacquardmaschine und jacquardmaschine, die eine solche lamelle umfasst - Google Patents

Antriebslamelle von aufhängehaken einer jacquardmaschine und jacquardmaschine, die eine solche lamelle umfasst Download PDF

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Publication number
EP3109352B1
EP3109352B1 EP16175403.1A EP16175403A EP3109352B1 EP 3109352 B1 EP3109352 B1 EP 3109352B1 EP 16175403 A EP16175403 A EP 16175403A EP 3109352 B1 EP3109352 B1 EP 3109352B1
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EP
European Patent Office
Prior art keywords
profile
blade
jacquard
blade according
jacquard mechanism
Prior art date
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Active
Application number
EP16175403.1A
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English (en)
French (fr)
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EP3109352A1 (de
Inventor
Patrice Przytarski
Sylvain Durand-Peyre
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Staeubli Lyon SA
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Staeubli Lyon SA
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Publication of EP3109352A1 publication Critical patent/EP3109352A1/de
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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
    • D03C3/26—General arrangements of jacquards, or disposition in relation to loom
    • 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
    • D03C3/32—Jacquard driving mechanisms
    • D03C3/36—Griffe operating mechanisms
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/12—Multiple-shed jacquards, i.e. jacquards which move warp threads to several different heights, e.g. for weaving pile fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • 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 invention relates to a blade for driving hooks which belong to a Jacquard mechanism and a Jacquard mechanism comprising such a blade.
  • a Jacquard machine is a device for forming the crowd on a Jacquard loom and comprises a series of blades, or knives, which are animated with an alternating vertical movement in opposition to the phase that is to say that when a blade is in the high position, the two blades which are adjacent to it are in the low position.
  • a multitude of hooks arranged in rows are able to cooperate with each blade.
  • the hooks of two adjacent blades are connected in pairs by a bead. The movement of the hooks is controlled by that of the blades and by a system of selective immobilization of the hooks, such as an electromagnet system.
  • a pulley system makes it possible to transmit the movement of each pair of hooks to a bar traversed by a warp thread. This then allows to create the crowd for the passage of a weft thread.
  • the blades of a Jacquard machine can reach four meters long for large format Jacquard machines.
  • the flexural rigidity of the blades is essential to ensure uniform hooking over the entire length of the blade.
  • the blades of a Jacquard mechanism are usually made in the form of an extruded aluminum profile, which is cut to the desired length and which is connected at its two longitudinal ends to a mechanism for transmitting the rotary movement of a input shaft, which mechanism comprises rotating shafts, rods, levers, claw frames and / or cams.
  • the height of the aluminum profile is chosen according to the fabric to be produced and the format of the Jacquard mechanism.
  • the aim of the invention is to reduce the mass of the blades of Jacquard mechanics, while guaranteeing their flexural rigidity, and to define a blade profile common to all Jacquard mechanical formats, that is to say to all formats. tissue.
  • the invention relates to a blade for driving mobile hooks that belong to a Jacquard mechanism, each movable hook being adapted to be immobilized by a selection device for determining the position of a warp on a loom. weave.
  • this blade comprises at least one profile in composite material, having a body consisting of unidirectional fibers which extend in the longitudinal direction of the profile and which are embedded in a resin.
  • the blades of Jacquard mechanics are lighter than aluminum blades and have a flexural rigidity equivalent to or greater than the latter.
  • the unidirectional reinforcing fibers confer a good rigidity and the mass of the blade can be reduced by a quarter or even half depending on the formats, compared to an aluminum blade, which is advantageous for an increase in speeds of operation of the Jacquard machine.
  • the invention makes it possible to use an identical blade height, regardless of the format of the Jacquard mechanism on which they are mounted, that is to say that the blades have a profile common to all the formats of Jacquard mechanics and that only the length of the blades is to be adapted according to the machine used.
  • a mold configured to manufacture a blade of maximum length can be used for the manufacture of the blades of a Jacquard machine of any format. The length of the blades is then adjusted by cutting if necessary.
  • a mold can also be used for each format of Jacquard machine. In this case, the blade leaves the mold directly with the right length.
  • the same die can be used for the manufacture of all the blades, regardless of the format of the Jacquard machine concerned.
  • the invention also relates to a Jacquard mechanism comprising a blade as defined above.
  • the Jacquard mechanism delimits several volumes of receiving Jacquard modules comprising the movable hooks, while the spacing between two rails on the blade is arranged longitudinally between two adjacent Jacquard modules receiving volumes.
  • the Jacquard mechanism 2 comprises an input main shaft (not shown) and a mechanism 6 for transmitting motion between the input shaft and a series of blades, or knives 12.
  • This mechanism 6 comprises two coaxial shafts 4, among which only the outer hollow shaft is visible at the figure 1 .
  • the shafts 4 are each driven with reciprocating movement about a longitudinal axis X4, which is horizontal in operation.
  • the mechanism 6 also comprises levers, slashes and rods 8 actuated by the rotation of the shafts 4.
  • the mechanism 6 forms a kinematic chain allowing, from the rotation of the input shaft, to move the blades 12 with a vertical reciprocating motion in opposition of phase.
  • a blade 12 when a blade 12 is in the high position, the two blades which are adjacent to it are in the low position.
  • the blades 12 are arranged head to tail next to each other.
  • a multitude of movable hooks 28 are mounted in pairs on each blade 12. A pair of these hooks 28 is visible only at the figure 4 .
  • the adjacent hooks 28 of two successive blades 12 are connected in pairs by a bead not shown.
  • the movement of the hooks 28 is controlled by that of the blades 12 and by a system for selectively immobilizing the hooks 28 not shown, such as an electromagnet system.
  • Each movable hook 28 is adapted to be immobilized by a selection device to determine the position of a warp on the loom.
  • a not shown pulley system makes it possible to transmit the movement of each set of hooks 28 adjacent to a not shown string traversed by a warp thread. This then allows to create the crowd for the passage of a weft thread.
  • the two adjacent hooks, the cord connecting them, the electromagnet system and the pulley system are part of a Jacquard module of the type described in EP1413657 .
  • Flanges 10 are fixed at regular intervals on the frame of the Jacquard machine.
  • the flanges 10 are arranged transversely to a longitudinal axis X12 along which each blade 12 extends.
  • the axis X12 is parallel to the axis X4.
  • Two successive flanges 10 can support Jacquard modules comprising the hooks 28 and delimit between them a volume V10 for receiving Jacquard modules.
  • L10 the length of a volume V10 along the axis X12.
  • the distance L10 corresponds substantially to the longitudinal distance between two successive flanges delimiting the same space V10 module receiving.
  • the flanges 10 are traversed by the blades 12.
  • the flanges 10 each delimit a series of vertical openings 100 for passage of the blades 12.
  • the blades 12 are connected to the transmission mechanism 6 by means of rods 8 arranged at each of their longitudinal ends.
  • a blade 12 of the Jacquard machine 2 is better visible Figures 2 to 4 .
  • a single blade 12 of the Jacquard machine 2 is described, knowing that all the other blades are identical, although this does not immediately show the figure 1 since they are arranged head to tail.
  • the longitudinal axis X12 defines the longitudinal direction of the profile 14 and the blade 12 which is mentioned several times in this document.
  • the longitudinal direction corresponds to the direction of the weft son on the Jacquard loom.
  • the blade 12 has a length L12 of 1.8 m but this length may vary depending on the format of the machine used from 1m up to 4m.
  • the blade 12 comprises a profile 14 of composite material having a body 140 consisting of unidirectional fibers F which extend in the longitudinal direction of the profile 14 and which are embedded in a resin R.
  • the unidirectional fibers F are said to be long because each fiber F extends substantially over the entire length of the body 140.
  • the profile 14 comprises two longitudinal ends E14 and two lateral faces S14.
  • the lateral direction is a direction perpendicular to the thickness of the blades 12, that is to say perpendicular to the longitudinal direction and the height of the blades 12.
  • the lateral direction corresponds to the direction of the warp yarns on the Jacquard loom.
  • the lateral faces S14 of the profile 14 are generally perpendicular to the lateral direction.
  • the unidirectional fibers F are represented by dots.
  • these fibers are carbon fibers and the resin R is an epoxy resin.
  • the epoxy resin R used has a hardener.
  • the terms "superior” and “inferior” are to be interpreted in a direction corresponding to the height of the body.
  • the body 140 of the profile 14 comprises a lower portion 140a having an end 140.2 shaped tip radiated, that is to say having a rounded shape.
  • the body 140 also includes an upper portion 140c driving the hooks 28, that is to say at which the hooks 28 cooperate with the blade, and an intermediate portion 140b connecting parts 140a and 140c.
  • the body 140 has a symmetrical profile with respect to a median plane P14 which cuts the body 140 in the middle of its thickness.
  • the body 140 is also symmetrical with respect to an unrepresented transverse plane intersecting the body 140 at mid-length.
  • the parts 140a to 140c are solid parts with a generally rectangular section, that is to say having no internal cavity, recess or outer notch, which are connected to each other.
  • the intermediate portion 140b is formed by a single central core, centered on the plane P14, and has a thickness e2 which is smaller than a thickness e1 of the upper portion 140c and less than a thickness e3 of the lower portion 140a.
  • the thicknesses e1 to e3 are measured perpendicularly to the axis X12 and to the height H12 of the blade 12.
  • the thickness e1 is 9mm
  • the thickness e2 is 4mm
  • the thickness e1 thus represents 30% at 60% of the thickness e2.
  • the intermediate portion 140b has a variable thickness
  • the thickness e2 is then the maximum thickness of the intermediate portion.
  • the section of the body 140 of the blade 12 has a height H14 of 220 mm.
  • the height H14 is more widely between 200 and 240 mm and is particularly suitable for all formats of Jacquard machines. This height H14 is much greater than the maximum thickness of the body 140, which in the example is the thickness e1 which is 9 mm.
  • the ratio between the height H14 of the body 140 and the maximum thickness of the body 140 is greater than 15, preferably greater than 20.
  • the height of the intermediate portion 140b is about 150 mm, or 60% to 80% of the height H14.
  • 140.1 is the connecting portion between the upper portion 140c driving the hooks 28 and the intermediate portion 140b, at which the body 140 varies in thickness, the thickness e1 to the thickness e2.
  • an intermediate portion of the profile 14 corresponds to the portion of the profile comprising the portion 140b of the body 140
  • an upper portion of the profile 14 corresponds to the portion of the profile comprising the portion 140c of the body 140
  • a lower part of the profile 14 corresponds to the portion of the profile comprising the portion 140a of the body 140.
  • Unidirectional fibers F are arranged in the upper, intermediate and lower portions of the profile 14.
  • the profile 14 comprises a fiber-based film which covers at least the junction portion 140.1 between the upper portion 140c and the intermediate portion 140b, on two lateral faces S140 of the body.
  • the film marries the entire outer periphery of the body 140 and forms an outer envelope 142 which is made of fiber fabric. glass.
  • the envelope 142 is woven, that is to say that it comprises glass fibers 142.1 which intertwine perpendicular to each other.
  • the fibers 142.1 are generally inclined each approximately 45 ° with respect to the longitudinal direction of the blade 12.
  • the outer envelope 142 is a nonwoven film based on carbon fibers. To the figure 3 , the envelope 142 is represented by broken lines in bold.
  • the casing 142 protects the fibers and resin of the body 140 from oils and other external agents. It also ensures the cohesion of the composite profile 14 which is fragile in a direction transverse to the unidirectional fibers, in particular in the thickness variation zones, and prevents delamination of the profile 14 when the hooks 28 rest on the blade 12. This has an advantage in particular when the support forces of the hooks 28 are not homogeneous over the entire length of the blade 12.
  • the profile 14 has a constant section along its length L14.
  • the blade 12 further comprises two fixing blocks 18 for attaching two links 8 of the transmission mechanism 6 to the blade 12. These fixing blocks 18 are fixed to the two longitudinal ends E14 of the profile 14, in particular by gluing. A fixing block 18 is better visible at the figure 5 . In what follows, only one of the two fixing blocks 18 of a blade 12 is described, the other block being identical.
  • the fixing block 18 has an upper end portion 18.1, a lower end portion 18.3 and a central body 18.2 connecting the parts 18.1 and 18.3.
  • the upper and lower end portions are to be considered in a direction corresponding to the height of the block 18 which corresponds to the direction of the height of the profile 14 when the block 18 is fixed to the profile 14.
  • the central body 18.2 is section in U, that is to say it has a bottom wall 180 and two side walls 182 which are parallel to each other. When the fixing block 18 is fixed on the profile 14, the side walls 182 extend parallel to the longitudinal direction of the profile 14 and are directed towards the latter, while the bottom wall 180 is perpendicular to the longitudinal axis X12 and is facing the longitudinal end surface E14.
  • the side walls 182 thus delimit internal lateral surfaces S182 which are each turned towards a lateral face S14 of the profile 14.
  • the bonding of the blocks 18 takes place on an external surface of the profile 14, that is to say on a surface delimiting the cross section of the profile over substantially its entire length L14.
  • the profile 14 thus has a constant section along its length L14, including at the longitudinal end portions of the profile which are opposite the side walls 182.
  • the rod 8 is fixed on the block 18 on the side opposite the profile 14, in the longitudinal direction, that is to say on the side of the outer surface of the bottom wall 180.
  • the body 18.2, and in particular the side walls 182, are offset longitudinally relative to the parts of the end 18.1 and 18.3, which delimit the total length L12 of the blade 12.
  • This longitudinal withdrawal is shown in FIG. figure 5 by the distance d1.
  • the longitudinal shrinkage d1 between the body 18.2 and the end portions 18.1 and 18.3 is caught up progressively at the junction between the body 18.2 and the end portions 18.1, 18.3.
  • the transmission of forces to the glue is carried out gradually when the Jacquard machine is started, that is to say when the blade 12 is set in motion by the mechanism 6.
  • the end portions 18.1 and 18.3 each have a through-hole, which is not visible at the figure 5 .
  • This hole opens, on the side of the composite material profile 14, in a recess 186, that is to say in a recess in the part 18.1 or 18.3.
  • a tapped insert 184 is inserted inside this hole and delimits a tapping O184 for receiving a not shown screw, for fixing the corresponding link 8.
  • the insert 184 is supported, that is to say it comprises a head intended to bear against the bottom of the recess 186.
  • This insert 184 is in practice mounted in force inside the hole.
  • the upper end portion 18.1 also defines a housing 188 for a not shown centering pin. This centering pin is intended to extend between the fixing block 18 and the rod 8 and allows precise positioning of the rod 8 with respect to the fixing block 18.
  • the fixing block 18 comprises at least one surface intended to be glued against a lateral face S14 of the profile 14. This makes it possible to size the bonding surface while avoiding adding space in the direction of the height and in the direction longitudinal.
  • the inner surface S182 of each side wall 182 is intended to be glued against a corresponding lateral face S14 of the profile 14, this at the intermediate portion of the profile.
  • the two lateral surfaces S182 extend in the longitudinal direction so as to define an optimal bonding surface, compatible with the forces to be transmitted to the profile 14. Moreover, this also makes it possible to limit the thickness of the walls 182.
  • the intermediate part of the profile 14 has a reduced thickness compared to the rest of the profile 14, the lateral space generated by the fixing of the blocks 18 on the profile 14 is compatible with the space provided for the positioning of the blades 12 in the jacquard machine 2.
  • the bulk of the blade 12 according to the invention is substantially equivalent to that of an aluminum blade of the state of the art, which allows their interchangeability and guarantees easy assembly of the blade 12 in the machine Jacquard.
  • the fact of using inserted intermediate pieces, namely the fixing blocks 18, for attaching the blade 12 to the mechanism 6 makes it possible to dissociate the rigidity and connection functions with the kinematics of the Jacquard 2 mechanism and to limit the impact of the connection on the flexural stiffness of the blade 12.
  • the carbon unidirectional fibers of the profile 14 which are arranged in the upper and lower portions of the profile 14 are preserved, which makes it possible to maintain a maximum of stiffness in flexion.
  • the blade 12 also comprises at least one rail 16 for interfacing with the hooks 28 of the Jacquard mechanism which is fixed in overlapping of the outer surface of the upper end of the profile 14. This makes it possible to dissociate the functions of rigidity and resistance.
  • the blade 12 comprises several metal interface rails 16, in particular of aluminum, which are distributed over the length of the profile 14 and which are spaced from each other with a longitudinal distance of 12 mm.
  • the use of several rails 16 distributed along the length makes it possible to limit the differential thermal expansion between the composite material of the profile 14 and the metal of the interface rails 16, when the operating temperature of the Jacquard machine is greater than the manufacturing temperature. of the blade 12. This thus avoids geometric deformations of the blade 12 which would not be compatible with the movement of the hooks 28 in the Jacquard machine.
  • Each rail 16 has a length L16 corresponding to the length L10 of a receiving volume V10 of Jacquard modules to extend continuously over the length on which the hooks 28 present in a jacquard module receiving volume cooperate with the blade 12
  • This length L16 is about 380 mm, with a tolerance of +/- 10 mm.
  • the spacing between two successive rails 16 thus represents approximately 2 to 10% of the length L16 of an interface rail 16.
  • the interface rails 16 have a U-shaped section with two branches 162 connected by a bottom wall 164 These interface rails 16 are intended to be fixed on the profile 14, in particular by gluing, around the upper part 140c of the body 140. When the rails 16 are mounted on the blade 12, the bottom of each rail 16 is turned.
  • each rail 16 comprises two inner side surfaces S16 intended to be glued against the surfaces S14 of the profile 14, at the level of the upper part thereof.
  • the bottom wall 164 of each rail 16 has, on its outer surface opposite the profile 14, notches 160 for optimized contact with the hooks 28.
  • the side walls 162 extend over the entire height of the hooks 28 when they are in contact with the bottom wall 162 and interpose between the hooks 28 and the profile 14 in the lateral direction to avoid contact of the hooks 28 with the profile 14.
  • the U-shaped geometry of each rail 16 allows a bonding of the rail with external surfaces of the profile 14, without machining the upper part of the profile and maintaining maximum rigidity for the profile.
  • the height H12 is substantially equal to the sum of the height H14 and the thickness of the bottom wall of the rail 16, with clearance or to the thickness of glue close between the upper end of the profile 14 and the wall of bottom 164 of the rail 16.
  • the blade 12 also comprises blade shoes 20 which are evenly distributed along the profile 14 with a spacing corresponding substantially to twice the length L10. These pads 20 serve to guide the blade 12 in its vertical reciprocating movement and cooperate with unrepresented guides fixed on the flanges 10.
  • Each pad 20 is bipartite, that is to say it comprises a portion 20a fixed on a side face S14 of the profile 14 and a portion 20b fixed on the other side.
  • the parts 20a and 20b are fixed to each other by screwing.
  • holes 144 are drilled through the intermediate portion of profile 14 for the passage of screws 22. These screws 22, which are two in number, are screwed through holes 144 into threads provided in part 20b. of the pad 20.
  • the last hole 144 formed in the profile 14 allows the precise positioning of the pad 20 on the profile 14.
  • Two shims 24 are interposed, on each side, between the lateral faces S14 of the profile 14 and the parts 20a and 20b of the pad 20. These wedges 24 make it possible to avoid damaging the profile 14 when fixing the pad 20.
  • a first step consists in the manufacture of the body 140 of the composite material profile 14.
  • the body 140 can be obtained by pultrusion, that is to say by the passage of pre-impregnated fibers in a long heated line which controls the content in resin and determines the shape of the section, or by molding.
  • the resin is polymerized during the pultrusion or molding operation and cures.
  • the film 142 is brought respectively directly in the pultrusion die or set up in the mold and adheres to the body 140 through the resin R during the polymerization.
  • the profile 14 When it is obtained by pultrusion, the profile 14 is cut to the length corresponding to the format of the Jacquard machine on which it will be mounted. After cutting, the longitudinal end surface E14 of the profile 14 extends substantially in the same plane perpendicular to the longitudinal direction X12. There is no other machining applied to the profile 14, so that the cohesion and rigidity of the profile 14 are preserved.
  • the profile 14 can be directly made to the length corresponding to the format of the Jacquard machine concerned.
  • the surfaces of the composite profile 14 which are intended to be bonded with the rails 16 on the one hand and with the fixing blocks 18 on the other hand, are prepared. These surfaces correspond to the lateral faces of the upper part of the profile 14 and to the longitudinal end portions of the lateral faces of the intermediate portion of the profile 14.
  • the preparation of the surfaces advantageously consists of a slight abrasion and then a degreasing before positioning the profile 14 in a tool not shown.
  • the profile 14 thus prepared is attached to this tool and the surfaces to be glued are glued with an epoxy adhesive on a few tens of millimeters thick.
  • the adhesive is, for example, a two-component epoxy adhesive adapted to the materials to be bonded, to the dimensions of the surfaces to be bonded and to the forces to be transmitted.
  • the epoxy adhesive has a tensile strength greater than 30 MPa and an elongation at break of the order of 3% .
  • the interface rails 16 are degreased at the inner surfaces S16 of the two branches to be glued. against the lateral faces S14 of the upper portion 140c of the profile 14. The rails 16 are placed in a longitudinal cap not shown, and spaced apart from each other in a position similar to that they must occupy relative to the flanges 10 when mounted in Jacquard mechanics 2.
  • the cap has positioning tabs which ensure the alignment of the rails 16 and the spacing between the rails 16.
  • the interface rails 16 are positioned with the free end of the branches which is directed downwards.
  • the inner side faces S16 of the two branches of the rail 16 are glued with an epoxy adhesive on a few tenths of a millimeter thick.
  • the interface rails 16 are then mounted around the upper end of the profile 14, with each inner lateral surface S16 facing one of the lateral faces S14 of the upper part of the profile 14 and the glue joints C2 between these surfaces. side.
  • the rails 16 are mounted without forcing, the excess glue is driven to the bottom of the rails 16, that is to say to the upper wall of the profile 14.
  • the cap is then attached to the tool.
  • the two fixing blocks 18 are each placed on a support not shown. For example, screws may be used to secure each fastener block 18 on its support.
  • the threads delimited by the inserts 186 may for example be used for fixing the block 18 on its support.
  • the inner side surfaces S182 of the body 18.2 of the two blocks 18 are degreased and then glued with epoxy glue.
  • the supports are put in place in the tooling, which makes it possible to control the longitudinal spacing between the two fixing blocks 18 in order to respect the length L12 of the blade and the position of the blocks 18 with respect to the profile 14 in the sense of height. This also makes it possible to ensure parallelism between the surfaces S14 and the surfaces S182 and between the two fixing blocks 18.
  • fixing blocks 18 comprise a body 18.2 U section placed around the ends E14 of the profile 14 allows to maintain access to the glue joints C during the bonding operation, in order to monitor the good distribution of the glue.
  • the assembly is maintained in the tooling during the polymerization time of the glue.
  • the profile 14, then equipped with the fixing blocks 18 and the rails 16 is removed from the tooling (the supports are detached from the blocks 18) and the shoes 20 are screwed onto the profile 14.
  • the holes formed in the profile 14 for fixing the pads 20 may be made independently before or after the gluing operations.
  • the blade 12 can then be put in place in the Jacquard mechanism between two links 8 connected to the input shaft of the Jacquard mechanism. Two screws each passing through a hole formed right through each rod 8 are tightened in the two threads 184, for fixing each corresponding rod 8 against the fixing block 18. Each spacing between two adjacent rails 16 of the blade 12 is then longitudinally disposed between two adjacent Jacquard modules receiving volumes in the longitudinal direction X12. In operation of the Jacquard machine, the mechanism 6, and in particular the rod 8 animated with a reciprocating vertical translation movement, moves the blade 12 through the glue joints C1 between blocks 18 and profile 14.
  • the fixing blocks 18 and the rails 16 can be fixed to the profile 14 other than by gluing, for example by screwing, by pinching or clipping.
  • the block / profile fixing is performed at a side face S14 of the profile 14 and a side wall of the fixing block 18 opposite.
  • the interface rails 16 are preferably fixed by gluing or by pinching so as not to alter the distribution of the long fibers in the upper or lower part of the profile 14, that is to say, where they have the greatest impact. on the flexural rigidity of the blade 12.
  • the blade 12 does not comprise fixing blocks 18 and each rod 8 is fixed to the profile 14 by pinching the longitudinal end E14 of the profile 14, in particular at the intermediate portion of the latter or by screwing into threaded inserts directly glued to profile 14.
  • the body 140 of the profile 14 incorporates unidirectional fibers other than carbon fibers, such as for example Kevlar fibers or glass fibers.
  • the hardened epoxy resin R of the profile 14 has a modulus of tensile strength greater than 3000 MPa, a tensile strength of between 60 MPa and 80 MPa and an elongation at break of about 4%.
  • the body 140 of the profile 14 is formed from a thermosetting resin R other than an epoxy resin, for example a polyester resin.
  • the outer casing 142 is bonded with an epoxy adhesive on the body 140 cured.
  • the bonding of the blocks 18 to the profile 14 is reinforced by screwing elements through the walls 182 and the body 140, that is to say in the transverse direction parallel to the profile thickness 14.
  • the profile 14 is composed of several bodies of composite material which are superimposed on each other and which extend in the longitudinal direction. These bodies are bonded together with connection spacers arranged at regular intervals. Each of these bodies consists of unidirectional fibers which extend in the longitudinal direction of the profile and which are embedded in a resin.
  • the interface rails 16, the fixing blocks 18 and / or the pads 20 can be directly overmolded during the manufacture of the profile 14. Geometries anchoring with the profile 14 can then be provided on the rails 16, on the blocks 18 and on the pads 20.
  • the intermediate portion 140b of the body 140 may be formed of two lateral flanks spaced from one another.
  • the hollow formed by these two lateral flanks can be left empty or filled with a light material, such as foam or basalt.
  • the lateral flanks of the intermediate portion 140b then delimit two internal lateral surfaces for bonding the fixing blocks 18. These two inner lateral surfaces are so-called external surfaces.
  • Each block 18 then has a single side wall 182 and an adhesive seal extends between each of the two side surfaces of the side wall 182 and the inner side surface of the profile 14 opposite.
  • the profile 14 thus has a constant section along its length L14, including at the longitudinal end portions of the profile which are facing the side walls 182 of the two blocks 18.
  • At least one of the fixing blocks 18 comprises one or more guide pads, similar to the pads 20.
  • At least one of the interface rails 16 comprises one or more guide pads, similar to the pads 20.
  • the interface rails 16 are attached to the lower part of the composite profile.
  • This configuration corresponds to a particular arrangement of the Jacquard modules with respect to the kinematics, in which it is the lower part of the profile 14 which drives the hooks 28.
  • the casing 142 is a woven film of polyester fibers, kevlar, or carbon or non-woven film fibers, which may be glass fibers, polyester, kevlar, or of carbon.
  • the envelope 142 differs from the structure used for the body 140, that is to say a structure based on unidirectional fibers in the longitudinal direction embedded in a resin.
  • each fixing block 18 has no bottom wall 180 at the two side walls 182.
  • the composite profile 14 defines, at each of its longitudinal ends, a groove, which extends at least at the level of the intermediate portion of the profile and opens on the longitudinal end surface E14 of the profile 14.
  • This groove then delimits two lateral faces which are fixed with a fixing block 18 provided with a single side wall 182 and having connecting means to the kinematic chain, that is to say the mechanism 6.
  • a fixing block 18 provided with a single side wall 182 and having connecting means to the kinematic chain, that is to say the mechanism 6.
  • an attachment by glue joints between the two side surfaces of the side wall 182 and the two side faces of the groove is preferred.
  • the blades 12 are attached to one or the other of two claw frames.
  • Each claw frame is animated by a movement of alternating vertical oscillations, in opposition to the other frame of claws, movement it transmits to the blades 12 they carry.
  • the claw frame is part of the mechanism 6.
  • the Jacquard mechanism comprises several input shafts (in the case of individual motors actuating each oblique bar, or even each blade), a mechanism 6 for transmitting the movement being then interposed between each input shaft and at least a blade 12.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (15)

  1. Antriebslamelle (12) von zu einer Jacquardmechanik (2) gehörenden, beweglichen Haken (28), wobei jeder bewegliche Haken (28) dazu geeignet ist, durch einen Auswahlvorrichtung immobilisiert zu werden, um eine Position eines Kettfadens auf einer Webmaschine zu bestimmen, dadurch gekennzeichnet, dass die Lamelle ein Profil (14) aus Verbundwerkstoff aufweist, der zumindest einen Körper (140) aus unidirektionalen Fasern (F) hat, die sich in der longitudinalen Richtung (X12) des Profils ausdehnen und die in ein Harz (R) eingebettet sind.
  2. Lamelle nach Anspruch 1, dadurch gekennzeichnet, dass der Körper (140) des Profils einen oberen Teil (140c), einen Zwischenteil (140b) und einen unteren Teil umfasst (140a), wobei der Zwischenteil einen zentralen Kern mit der Dicke (e2) aufweist, die niedriger ist als die (e3) des unteren Teils (140a) und/oder niedriger ist als die (e1) des oberen Teils (140c).
  3. Lamelle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Profil (14) einen Film (142) auf Faserbasis aufweist, der mindestens einen Abschnitt (140.1) mit variierender Körperdicke bedeckt.
  4. Lamelle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die unidirektionalen Fasern (F) des Körpers (140) des Profils Kohlefasern sind, und dass das Harz ein Epoxidharz ist.
  5. Lamelle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Querschnitt des Profils über die gesamte Länge (L 14) des Profils (14) konstant ist.
  6. Lamelle nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner zwei Blöcke (18) zur Befestigung an einem Übertragungsmechanismus (6) für die Bewegung der Jacquardmechanik aufweist, wobei die zwei Blöcke an zwei longitudinalen Enden (E14) des Profils (14) befestigt sind.
  7. Lamelle nach Anspruch 6, dadurch gekennzeichnet, dass jeder Befestigungsblock (18) mindestens eine Seitenwand (182) mit Blick auf eine Seitenfläche (S14) des Profils aufweist, um jeden Block (18) mit dem Profil zu verbinden.
  8. Lamelle nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die beiden Blöcke (18) zumindest durch Kleben am Profil (14) befestigt sind.
  9. Lamelle nach den Ansprüchen 2 und 8, dadurch gekennzeichnet, dass
    - jeder Befestigungsblock (18) einen Körper (18.2) mit einem U-förmigen Querschnitt enthält, der eine Bodenwand (180) und zwei Seitenwände (182) umfasst,
    - die zwei Seitenwände jeweils eine Innenfläche aufweisen (S182),
    - die Bodenwand mit Blick auf die Oberfläche der longitudinalen Enden (E14) des Profils ist,
    - sich eine Klebverbindung (C1) zwischen jeder Innenfläche (S182) und einer Seitenfläche des Profils (14), auf der Höhe des Zwischenteils (140b) des Körpers, ausdehnt.
  10. Lamelle nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass jeder einzelne Befestigungsblock (18) obere (18.1) und untere Endteile (18.2) aufweist, die in Längsrichtung (d1) von jeder Seitenwand (182) versetzt sind und die Mittel (184) zur Befestigung an dem Mechanismus (6) aufweisen.
  11. Lamelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie ferner mindestens eine Schiene (16) der longitudinalen Schnittstelle umfasst, die teilweise die Außenfläche des Profils abdeckt und die in der Lage ist, mit den beweglichen Haken (28) der Jacquardmechanik zu kooperieren.
  12. Lamelle nach Anspruch 11, dadurch gekennzeichnet, dass sie mehrere metallische Schienen (16) der longitudinalen Schnittstelle aufweist, die über die Länge des Profils verteilt und voneinander beabstandet sind.
  13. Lamelle nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, dass jede Schiene (16) der Schnittstelle im Querschnitt U-förmig und um das Profil (14) herum verklebt ist.
  14. Jacquardmechanik (2), enthaltend mindestens eine Lamelle gemäß einem der vorhergehenden Ansprüche.
  15. Jacquardmechanik nach Anspruch 14, dadurch gekennzeichnet, dass die Lamelle gemäß Anspruch 12 ist und dass die Jacquardmechanik mehrere Volumen (V10) zur Aufnahme von Jacquardmodulen begrenzt, die bewegliche Haken (28) aufweisen, und dass der Zwischenraum zwischen zwei Schienen (16) auf der Lamelle (12) longitudinal zwischen zwei Volumen (V10) zur Aufnahme von angrenzenden Jacquardmodulen angeordnet ist.
EP16175403.1A 2015-06-22 2016-06-21 Antriebslamelle von aufhängehaken einer jacquardmaschine und jacquardmaschine, die eine solche lamelle umfasst Active EP3109352B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1555696A FR3037601B1 (fr) 2015-06-22 2015-06-22 Lame d'entrainement de crochets appartenant a une mecanique jacquard et mecanique jacquard comprenant une telle lame

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EP3109352B1 true EP3109352B1 (de) 2019-09-04

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US (1) US9863068B2 (de)
EP (1) EP3109352B1 (de)
KR (1) KR102566938B1 (de)
CN (1) CN106256936B (de)
CA (1) CA2932963C (de)
FR (1) FR3037601B1 (de)
PT (1) PT3109352T (de)

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FR3037601B1 (fr) * 2015-06-22 2018-06-22 Staubli Lyon Lame d'entrainement de crochets appartenant a une mecanique jacquard et mecanique jacquard comprenant une telle lame
CN107841811B (zh) * 2017-10-26 2020-07-10 南通佳立禾机电有限公司 提刀
CN107700011A (zh) * 2017-11-20 2018-02-16 常熟纺织机械厂有限公司 电子提花机的提刀结构
CN109440255A (zh) * 2018-10-31 2019-03-08 德清县德盛纺织品有限公司 凸轮开口装置

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FR2742170B1 (fr) * 1995-12-12 1998-01-23 Staubli Verdol Perfectionnements aux mecaniques d'armures a double leve
DE19651190C1 (de) * 1996-12-10 1998-06-10 Mayer Textilmaschf Elektromagnetisch arbeitende Jacquard-Steuervorrichtung
FR2826671B1 (fr) * 2001-06-29 2003-09-12 Staubli Lyon Dispositif de formation de la foule sur un metier a tisser de type jacquard
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FR2846343B1 (fr) 2002-10-25 2004-12-17 Staubli Lyon Mecanisme de formation de la foule et metier a tisser equipe d'un tel mecanisme
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EP3109352A1 (de) 2016-12-28
KR20160150593A (ko) 2016-12-30
US9863068B2 (en) 2018-01-09
CN106256936A (zh) 2016-12-28
PT3109352T (pt) 2019-10-28
KR102566938B1 (ko) 2023-08-14
FR3037601B1 (fr) 2018-06-22
US20160369430A1 (en) 2016-12-22
CA2932963A1 (fr) 2016-12-22
FR3037601A1 (fr) 2016-12-23
CN106256936B (zh) 2020-02-21
CA2932963C (fr) 2023-08-29

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