EP3839115B1 - Lisse pour métier à tisser et harnais équipé d'une telle lisse - Google Patents

Lisse pour métier à tisser et harnais équipé d'une telle lisse Download PDF

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Publication number
EP3839115B1
EP3839115B1 EP20215381.3A EP20215381A EP3839115B1 EP 3839115 B1 EP3839115 B1 EP 3839115B1 EP 20215381 A EP20215381 A EP 20215381A EP 3839115 B1 EP3839115 B1 EP 3839115B1
Authority
EP
European Patent Office
Prior art keywords
strand
axis
along
housings
link
Prior art date
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Active
Application number
EP20215381.3A
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German (de)
English (en)
French (fr)
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EP3839115A1 (fr
Inventor
Michel Herrmann
Alexis Porte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staeubli Lyon SA
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Staeubli Lyon SA
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Publication of EP3839115A1 publication Critical patent/EP3839115A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • D03C9/026—Material used
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • 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
    • D03C3/24—Features common to jacquards of different types
    • D03C3/40—Constructions of lifting-cords
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • D03C9/024—Eyelets

Definitions

  • the invention relates to a heddle for guiding a warp thread for a weaving loom, as well as to a harness for a Jacquard-type loom equipped with such a heddle.
  • the technical field of the invention is that of the formation of the shed on a loom, by means of heddles which each comprise an eyelet for the passage of one or more warp threads and which each make it possible to vertically move one or more warp yarns, to form a crowd of passage of weft yarns.
  • Such heddles are located next to each other on the loom, with a high density, which induces friction between a heddle and the warp threads passing through the eyelets of the adjacent heddles.
  • a strand of the heddle body and the link are overlapping, which creates abrupt transition zones between the strand and the link.
  • These transition zones and the heads of the rivets formed by the assembly members are capable of forming hooking reliefs for the warp threads adjacent to the heddle, during weaving. This therefore results in a risk of breakage or damage to the warp threads in a weaving loom equipped with such a heddle.
  • the invention more particularly intends to remedy by proposing a new heddle for a weaving loom, with which the risks of snagging neighboring warp threads during weaving are greatly reduced, or even eliminated.
  • the passage zone facilitates the diffusion of the resin which has not yet solidified in the vicinity of the external faces of the smooth.
  • the resin may be deposited on only one transverse side of the assembly formed by the link and the strand and be distributed at the level of the peripheral edge of the second part, on the opposite transverse side of the heddle, the other side of the overlay interface.
  • the invention also relates to a harness for a loom of the Jacquard type, equipped with several heddles for guiding a warp thread.
  • This harness is characterized in that at least one of these guide rails is as mentioned above.
  • the Jacquard-type loom M shown in the figure 14 is equipped with a Jacquard mechanism 102 which controls several hooks 104, a lower end of which is associated with several arcades 106.
  • a lower end 106a of each arcade 106 is connected to an upper end 1a of a guide rail 1 of a wire of chain.
  • Each heald 1 is subjected to the action of a return spring 108 fixed to a hooking beam 110 by a rod 112, the beam 110 being secured to a frame of the loom M.
  • the various arches 106 are distributed over the width of the loom by crossing holes made in a stuffing board 114.
  • the elements 1 and 106 to 114 form a harness H belonging to the loom M and controlled by the Jacquard mechanism 102.
  • the figures 1 to 9 show a first embodiment of a guide heddle 1 for a warp thread of the harness H on the loom M.
  • the smooth guide 1 extends in length along a longitudinal axis X1 and comprises a smooth body 10 and a link 2.
  • the smooth body 10 comprises two strands 4 which are distinct and arranged on either side of the link 2 , along the X1 axis.
  • Y1 and Z1 two axes of the rail 1 which are perpendicular to the axis X1.
  • the Y1 axis extends along the width of the link 2, while the Z1 axis extends along the thickness of the link 2.
  • the Y1 axis constitutes a lateral axis for the rail 1, while the Z1 axis constitutes a transverse axis.
  • the smooth body 10 has hooking means 11A or 11B, respectively designed to cooperate with a yoke 106 or a spring 108.
  • the hooking means 11A comprise an end piece 12 which forms an opening 14 for passage and wedging of the yoke 106, as well as a tube 16 mounted around the strand 4, with the possibility of translation along the axis X1.
  • the attachment means 11A are preferably in accordance with the teaching of EP-B-1 741 815 .
  • connection means 11B comprise an external thread 18 which is intended to be screwed into a spring 108 and a slip damper 19.
  • the strands 4 are identical to each other, except at the level of the attachment means 11A and 11B.
  • the link 2 is formed from a sheet of single-thickness metal, preferably stainless steel. It extends along a longitudinal axis X2.
  • Y2 denotes a lateral axis along which extends the width of link 2 and Z2 a transverse axis along which extends the thickness of this link.
  • the axes X2, Y2 and Z2 coincide with the axes X1, Y1 and Z1 respectively.
  • the link 2 includes a central portion 20 which has lateral edges 21 rounded by polishing and which defines an eyelet 22 for the passage of a warp thread, with rounded edges.
  • This eyelet 22 crosses link 2 right through along axis Z2.
  • the axes X2, Y2 and Z2 are concurrent at the center of the eyelet 22 which is rectangular in shape in the main plane of the link 2, which is the median plane of the central portion 20 and contains the axes X2 and Y2.
  • the link 2 also includes two longitudinal lugs 24 which extend it, along the axis X2, at its two opposite longitudinal ends.
  • the lugs 24 each have a reduced width compared to the width of the central portion 20.
  • the width of the link measured along the axis Y2 gradually decreases as it approaches the lugs 24 and the edges 21 of the central portion 20 are extended by rounded curved edges 25 which delimit between them a zone 26 of transition between the central part 20 and a tab 24.
  • transverse face 28 and 29 respectively the external transverse faces of the link 2, parallel to the axes X2 and Y2.
  • the transverse face 28 is visible to figure 1 , 4 and 5
  • the transverse face 29 is visible to figure 2 , 6 and 7 .
  • a notch 30 is provided on each of the transverse faces 28 and 29, at the level of the junction between the central part 20 and one of the transition zones 26, along the axis X2.
  • Two notches 30 are thus provided on the transverse face 28 and two notches 30 on the transverse face 29, on either side of the eyelet 22 along the axis X2.
  • the notches 30 are provided on the side faces 28 and 29 at the same level along the axis X2.
  • the notches 30 provided on the transverse faces 28 and 29 are aligned along the axis X2.
  • Each notch 30 is obtained by cold heading the link 2, this cold heading operation preferably taking place at the same time as the cutting of this link 2 during which the edges 21, the eyelet 22 and the edges 25.
  • Each notch 30 preferably has a depth of the order of 0.05 mm and a triangular or semi-circular section.
  • Each notch 30 extends in a plane perpendicular to axis Z2 and is parallel to axis Y2.
  • l30 the length of a notch 30 measured parallel to the axis Y2.
  • l2 the width of the link 2 measured parallel to this same axis Y2.
  • the ratio l30 to l2 is preferably between 0.6 and 0.95, with a preferred value equal to 0.8.
  • each notch 30 extends over 60 to 95% of the width l2 of the link 2, preferably over approximately 80% of this width. As they do not extend as far as the ridges 21 and the edges 25, the ridges do not substantially reduce the mechanical strength of the link 2.
  • each of the transition zones 26 is formed an elongated housing 32 which constitutes an orifice of the link 2 and crosses the link 2 right through between the transverse faces 28 and 29, that is to say parallel to the axis Z2 , and whose largest dimension extends along the longitudinal axis X2.
  • Each elongated housing 32 comprises a first lobe 322 and a second lobe 324 which communicate with each other along the axis X2.
  • Each housing 32 is thus generally in the shape of a keyhole.
  • the elongated housings 32 are symmetrical to one another with respect to a plane containing the axes Y2 and Z2. Furthermore, each elongated housing 32 is symmetrical with respect to a plane containing the axes X2 and Z2.
  • the abutment surfaces 323 and 329 each form a portion of the contour of the housing 32 and are oriented towards the free longitudinal end 242 of the tab 24 adjacent.
  • the abutment surfaces 325 and 327 also each form a portion of the outline of the housing 32 and are oriented towards the eyelet 22.
  • An intermediate rear abutment surface 327 extends, along the axis X2, between two abutment surfaces intermediate front 329.
  • the intermediate rear abutment surfaces 327 define a narrowing of the dimension along the Y2 axis of the elongated housing 32, between the two lobes 322 and 324.
  • L32 denotes the length of an elongated housing 32, measured parallel to the axis X2.
  • Each strand 4 is made of synthetic material, more particularly plastic.
  • this plastic material can be an injection molded polyamide 6.6, with or without additive.
  • Each strand 4 extends along a longitudinal axis X4.
  • Two axes Y4 and Z4 are defined perpendicular to the axis X4 and between them.
  • the axes X4, Y4 and Z4 are respectively coincident with the axes X1, Y1 and Z1.
  • Each strand has, at its end portion 42, a proximal cavity 44 defined between a bottom 442, a ceiling 444 and two side walls 446.
  • a flat surface S442 of the bottom 442, which delimits the proximal cavity 44 is parallel to the axes X4 and Y4, as is the lower surface S444 of the ceiling 444, which also delimits this cavity, on its opposite side.
  • the internal surfaces S446 of the side walls 446 are, for their part, generally parallel to the axes X4 and Z4.
  • the surface S442 forms a face covering the link 2 by the strand 4, as emerges from the explanations which follow.
  • the bottom 442 is extended, in the direction of a distal longitudinal end 46 of the strand 4, by a longitudinal end part in the form of a plate 48 which can be considered as delimiting a distal cavity devoid of ceiling and side walls. .
  • the plate 48 is flat.
  • a flat surface S48 of the plate 48 is defined, parallel to the axes X4 and Y4 and arranged in the extension of the surface S442 of the bottom 442.
  • the surface S48 constitutes a face covering the link 2 by the strand 4, as emerges from the explanations that follow.
  • the ends of the ceiling 444 and of the walls 446 form a surface S44 which surrounds the mouth of the proximal cavity 44 on the side of the distal longitudinal end 46 and which is inclined in the direction of the plate 48 and of this distal longitudinal end 46.
  • ⁇ the angle of convergence of the surface S44 with respect to the axis X4, taken in the solid part of the strand 4, towards the longitudinal end 46, in the plane of the figure 8 .
  • This angle, visible at the figure 8 has a value between 15° and 45°, preferably equal to 30°.
  • Two circular holes 52 and 54 are respectively provided in the bottom 442 and in the ceiling 444 and extend as far as an outer peripheral surface 56 of the strand 4.
  • the holes 52 and 54 are aligned. They each extend along an axis A52 or A54 which is perpendicular to the axis X4, in the example parallel to the axis Z4, which is not compulsory.
  • the axes A52 and A54 are preferably coincident.
  • Each of these holes 52 and 54 is advantageously tapered and flared away from the axis X4, that is to say in the direction of the outer peripheral surface 56.
  • the holes 52 and 54 both open into the proximal cavity 44 which they connect to the outside, in the vicinity of an end wall 449 of this opposite cavity, along the axis X4, at its mouth and at the longitudinal and distal end 46 of strand 4.
  • the hole 52 opens into a countersink 58 of elongated shape, the largest dimension of which is parallel to the axis X4.
  • the hole 54 opens into another counterbore 60, diametrically opposite to the counterbore 58 and having an axial length, parallel to the axis X4, less important than that of the counterbore 58.
  • an axial offset d4 is provided, along the axis X4, between the wall 449 and the outlet of the hole 52 in the cavity 44.
  • the value of this axial offset is between 0.1 and 0.5 mm, preferably of the order of 0.15mm.
  • An axial offset of the same order of magnitude is provided between the end wall 449 and the outlet of the hole 54 in the cavity 44.
  • the plate 48 is pierced with two circular orifices 62 and 64 which pass right through it, along the axis Z4, between its surface S48 and a counterbore 66 made on the outer peripheral surface 56.
  • the two orifices 62 and 64 are offset , along the axis X4, the orifice 62 being closer to the distal longitudinal end 46 than the orifice 64.
  • the orifice 62 can thus be qualified as “distal”, whereas the orifice 64 is qualified of "proximal”.
  • the bottom surface S66 of the counterbore 66 is part of the outer peripheral surface 56 of the strand 4 and converges towards the axis X4 approaching the distal longitudinal end 46.
  • the bottom surface S66 is inclined relative to the X4 axis and leaning towards the distal longitudinal end 46 and the X4 axis.
  • ⁇ the angle of convergence of the bottom surface S66 with respect to the axis X4, taken in the solid part of the strand 4, towards the longitudinal end 46, in the plane of the figure 8 .
  • This angle also visible at the figure 8 , has a value between 5° and 15°, preferably equal to 5°.
  • the surfaces S44 and S66 converge in the direction of the distal longitudinal end 46 with an angle of convergence between them equal to the sum of the angles ⁇ and ⁇ .
  • each longitudinal lug 24 of the link 2 When assembling the heddle 1, each longitudinal lug 24 of the link 2 is engaged in the proximal cavity 44 of a strand 4 of the body of the heddle 10, through its mouth, making the axes X1, X2, X4 coincide. , the Y1, Y2, Y4 axes, and the Z1, Z2, Z4 axes.
  • Each tab 24 is positioned along the axis X1 such that its free longitudinal end 242 is offset axially, along the axis X1, relative to the holes 52 and 54, being closer to the mouth of the proximal cavity than the holes 52 and 54.
  • the free longitudinal end 242 is located opposite the end wall 449 with respect to the axes A52 and A54.
  • S24 denotes the surface of the longitudinal tab 24 which is then bearing against the bottom 442 of the proximal cavity.
  • the surface S24 covers the entire surface of the longitudinal leg 24 on the side of the lateral face 29.
  • the surface S24 is an overlapping face of the strand 4.
  • S26 the surface of the transition zone 26 which is then in contact against the plate 48.
  • the surface S26 is a covering face of the strand 4 which is formed by a part of the transverse face 29, located at the level of the transition zone 26, which surrounds the elongated housing 32.
  • the link 2 bears on the bottom 442 and on the plate 48, more precisely on the surface S442 and on the surface S48.
  • each strand 4 is arranged in such a way that the surfaces S442 and S48 are horizontal and oriented upwards.
  • the link 2 and the end portion 42 of the strand 4 partially overlap along the axis Z1 at the level of an IR overlap interface which is the contact interface between the link 2 and the strand 4 along the axis Z1.
  • the IR overlap interface is a geometric surface, defined on the link 2 and on the strand 4, at the level of which these parts are in surface contact.
  • the global covering face S2 bears against the global covering face S4 and these global covering faces S2 and S4 define together the IR covering interface of parts 2 and 4.
  • the IR covering interface is formed, on strand 4, of the union S4 of surfaces S442 and S48 and, on link 2, of the union S2 of the surfaces S24 and S26.
  • link 2 overlaps plate 48 at a single IR overlap interface.
  • the outer peripheral surface 56 of the strand 4 opposite to the surface S48 and which includes the surface S66, is not covered along the axis Z1 by the link 2, while the transverse face 28 of link 2 is not covered, along axis Z1, by strand 4.
  • the surfaces S44 and S66 are respectively inclined towards the IR overlap interface and towards the distal longitudinal end 46, with the angles of inclination ⁇ and ⁇ .
  • a first transverse side CT1 of the assembly formed of parts 2 and 4 is defined as being the side of this assembly located, with respect to the overlapping interface IR, in a first direction along the axis Z1.
  • the first transverse side CT1 includes in particular link 2 and the elongated housing 32.
  • a second transverse side CT2 of this assembly is also defined, opposite along the axis Z1 to the first transverse side CT1 with respect to the overlapping interface IR.
  • the second transverse side CT2 includes, in particular, the plate 48 and the peripheral edge 484.
  • the distal housing 62 is facing each other, in a direction parallel to the axis Z1, with the lobe 322 of the elongated housing 32.
  • the proximal housing 64 is in vis-à-vis, in a direction parallel to the axis Z1, with the lobe 324 of the elongated housing 32.
  • the intermediate rear abutment surfaces 327 of the elongated housing 32 are arranged, along the axis X1, between the orifices 62 and 64.
  • the solid part of the transition zone 26 does not cover the orifices 62 and 64 which open completely, along the axis Z1, respectively into the lobe 322 and into the lobe 324 of the elongated housing 32.
  • the distal orifice 62 and the lobe 322 of the elongated housing 32 are each provided to receive resin in fluid form during the manufacture of the heddle 1.
  • the volumes 62 and 32 therefore each constitute a housing for receiving resin and, together, a pair of housings 32+62 in which is received, as emerges from the explanations which follow, a quantity of resin which solidifies during the manufacture of the heddle, forming a first member 82 for assembling the link 2 and of the strand 4.
  • a quantity of resin is received, during manufacture of the heddle 1, both in the proximal orifice 64 and in the lobe 324 of the elongated housing 32 which each constitute a resin receiving housing and, together, a pair of 32+64 housings in which is received a quantity of resin which solidifies during manufacture, forming a second member 84 for assembling the link 2 and the strand 4.
  • the elongated housing 32 is therefore a housing common to the two pairs of housings 32+62, 32+64 formed respectively by the housings 32 and 62, on the one hand, and 32 and 64, on the other hand.
  • the assembly member 82 is therefore one piece with the assembly member 84.
  • a first flange 86, common to the assembly members 82 and 84, is formed at least in part in this common housing, during the solidification of resin.
  • a housing of a pair of housings for receiving solidified resin 32, 62 or 64 has at least two surfaces oriented opposite to each other in the longitudinal direction of the axis X1 and which are in contact with the solidified resin, in order to participate in the longitudinal connection between the link 2 and the strand 4.
  • the opposite surfaces are two surfaces in the form of half-cylinders.
  • the proximal front abutment surface 323 and two of the intermediate front abutment surfaces 329 located in the first lobe constitute first surfaces, while the two intermediate rear abutment surfaces 327 constitute second surfaces opposite the first surfaces.
  • the two intermediate front abutment surfaces 329 made in this lobe constitute first surfaces, while the distal rear abutment surface 325 constitutes a second surface opposite the first surfaces.
  • surfaces 323 and 329 constitute first surfaces, while surfaces 325 and 327 constitute second surfaces.
  • L1 the maximum distance, measured parallel to the axis X4, between the edges of the two housings 62 and 64, that is to say the distance between the most distal point of the edge of the orifice 62 and the point the most proximal of the edge of the orifice 64.
  • L2 the maximum distance measured between the edge of the proximal orifice 64 and the distal longitudinal end 46 of the terminal portion 42, that is to say the distance between the most proximal point of the edge of the orifice 64 and this end 46.
  • the length L2 is greater than the length L1.
  • the length L32 of the elongated housing 32 is chosen to be strictly greater than the lengths L1 and L2.
  • the housing 32 straddles the housings 62 and 64 and the proximal front abutment surface 323 extends beyond the peripheral edge 484 and the distal longitudinal end 46 of the side. 4, with respect to the surface S48 and outside the vis-à-vis, along the axis Z1, with the solid part of the strand 4 and with the orifices 62 and 64.
  • the housing 32 is in vis-à-vis along the axis Z1 of a portion of the outer peripheral edge 484 of the plate 48, plus particularly of a portion 4842 of the peripheral edge located on either side, along the axis Y1, of the distal longitudinal end 46 and which is visible through the lobe 322 at the figure 4 .
  • the housing 32 is also opposite, along the axis Z1, a zone Z0 which is adjacent, in a direction perpendicular to the axis Z1, to the peripheral edge 484 and which is empty as long as the resin is n has not been affixed to the assembly area between parts 2 and 4.
  • edge 484 overlaps surface S26, in that it extends opposite this surface.
  • the trace of the peripheral edge 484 in projection along the axis Z1 on the surface 29 delimits the surface S26.
  • a passage zone ZP, plane there is thus formed, at the front of the longitudinal end 46, that is to say beyond this end relative to the plate 48, a passage zone ZP, plane, the section of which is delimited by the contour portion 323 of the proximal part of the lobe 322 and by the portion 4842 of the peripheral edge 484 of the plate 48.
  • this zone of ZP passage is empty, that is to say that it is crossed neither by the solid part of the link 2, nor by the solid part of the strand 4.
  • This ZP passage zone allows a flow of the resin not yet solidified between the interior of the elongated housing 32 and the peripheral edge 484, in particular at the level of the portion 4842 of the peripheral edge 484 which delimits the passage zone ZP.
  • the passage zone ZP is arranged outside the vis-à-vis along the axis Z1 with the overlapping interface IR since the passage zone ZP extends beyond the peripheral edge 484 with respect to the interface of IR overlay.
  • the passage zone is also located outside the vis-à-vis along the axis Z1 with the solid part of the strand 4.
  • the passage zone ZP is not arranged vis-à-vis the housings 62 and 64 of strand 4, in a direction parallel to transverse axis Z1.
  • the surfaces S44 and S66 are also inclined towards the passage zone ZP.
  • a quantity of resin is applied at the level of an application point PA which is defined on the surface S44, in the thickness of the ceiling 444.
  • the resin flows by gravity, from the inclined surface S44, towards the elongated housing 32 and towards the side face 28 of the link 2.
  • the resin penetrates into the elongated housing 32 and, like this elongated housing is arranged opposite the distal housing 62, at the level of the lobe 322, and the proximal housing 64, at the level of the lobe 324, the resin then spreads, under the effect of gravity, in the cylindrical housings 62 and 64, as well as in the counterbore 66.
  • a quantity of resin which has not yet solidified then fills the pairs of housings 32+62 and 32+64.
  • the resin crosses the passage zone ZP, around the distal part of the plate 48 until reaching the previously empty zone Z0, and extending against the portion 4842 of the peripheral edge 484 and the side face 29 of the link 2.
  • the quantity of fluid resin applied at point PA is chosen so that, on the first transverse side CT1 of the assembly formed by parts 2 and 4, the fluid resin extends beyond the elongated passage 32, up to the notch 30 arranged on the side face 28 of the link 2.
  • This notch which is arranged on the same longitudinal side with respect to the passage zone ZP and to the housings of the pairs of housings, at the level of an assembly zone of the link 2 with the strand 4, constitutes a zone stopping the progression of the fluid resin along the axis X1, on the side face 28, in the direction of the eyelet 22.
  • the solidified resin extends from the inclined surface S44 to the inclined surface S66.
  • the resin present on the transverse side CT2 also extends as far as the notch 30 made on the side face 29, which also constitutes a zone stopping the progression of the fluid resin along the axis X1, on the side face 29, in the direction of the eyelet 22.
  • the resin present at the level of the longitudinal and distal end 46 tends to flow in the direction of the counterbore 66, because the bottom surface S66 of this counterbore is inclined in the direction of the longitudinal and distal end 46 and of the passage zone ZP.
  • the resin also extends into the proximal cavity 44, between the longitudinal leg 24 and the ceiling 444 and between the longitudinal leg 24 and the side walls 446, while the longitudinal leg 24 is in surface support on the bottom 442 of the proximal cavity 44 at the level of the IR covering interface, more precisely at the level of the surface S442.
  • the fluid resin progresses in the proximal cavity 44, around the longitudinal tab 24, to the longitudinal end of the proximal cavity, at the level of the end wall 449, that is to say beyond the free longitudinal end 242 of the longitudinal leg 24.
  • the fluid resin then penetrates into the two holes 52 and 54 which serve as a vent for the evacuation of the air, present in the proximal cavity 44 before the introduction of the fluid resin and which is expelled by the fluid resin.
  • These holes 52 and 54 allow the flow of fluid resin respectively towards the counterbores 58 and 60.
  • the resin extends longitudinally, on each transverse face of the heddle, that is to say each face generally perpendicular to the transverse axis Z1, from a transverse face 28 or 29 of the link, at the level of a notch 30, up to an inclined surface S44 or S66 formed on the strand 4. More precisely, and as shown in figure 5 , on the first transverse side CT1 of the heddle, the resin extends continuously from the notch 30 to the inclined surface S44, at the junction between the proximal cavity 44 and the plate 48. On the other hand, as depicted in figure 7 , on the second transverse side CT2, the resin extends from the notch 30 to the bottom surface S66 of the proximal end of the counterbore 66. On the figure 5 and 7 , for the clarity of the drawing, the amount of solidified resin is shown in gray and semi-transparent, to allow viewing certain parts of the stringer located under the external surface of this amount of resin.
  • the resin is subjected to an ultraviolet treatment which causes it to polymerize and solidify. , so as to create two assembly members 82 and 84 of solidified resin, in the form of rivets, in the two pairs of housings 32+62 and 32+64, and two pins 72 and 74 of solidified resin, in the holes 52 and 54.
  • the quantity of resin deposited on the assembly zone between parts 2 and 4 forms the first flange 86 common to the two assembly members 82 and 84, on the first transverse side CT1, and a second flange 88 common to these two assembly members, on the second transverse side CT2.
  • the first common flange 86 is formed inside the elongated housing 32, above the surface S44 and above the side face 28 in the representation of the figure 9 ; it joins the assembly members 82 and 84 respectively formed in the pairs of housings 32+62 and 32+64, on the first transverse side CT1.
  • the second common flange 88 is formed in the counterbore 66 and on the side face 29 and joins the same assembly members, on the second transverse side CT2.
  • the two aforementioned flanges 86 and 88 extend beyond the longitudinal and distal end 46 of the strand 4 with respect to the surface S48.
  • the resin extends continuously inside the elongated housing 32, as well as around this housing up to the notch 30 provided on the side face 28.
  • the resin covers a portion of the free edge of the strand 4 formed by the peripheral edge 484 of the plate 48 and extends in the whole of the counterbore 66, as well as up to the notch 30 provided on the side face 29.
  • the pins 72 and 74 of solidified resin formed in the holes 52 and 54 are of frustoconical shapes and diverge towards the counterbores 58 and 60. In addition, they meet inside the proximal cavity 44 and are integral with the two assembly members 82 and 84. They are thus firmly anchored in the holes 52 and 54 and are not at risk of escaping therefrom.
  • the axial offset d4 favors the anchoring of the pins 72 and 74 in the proximal cavity 44.
  • a part of the solidified resin extends continuously from the elongated housing 32, through the passage zone ZP, into the previously empty zone Z0.
  • This part of the solidified resin surrounds the longitudinal end portion of the strand 4 which is located, along the axis X1, between the distal orifice 62 and the distal and longitudinal end 46, and which adjoins the peripheral edge 484 of tray 48.
  • This portion 4844 is not opposite, along the axis Z1, the housing 32.
  • the solidified resin which passes through the passage zone ZP extends in contact with a part of the portion 4844 of the peripheral edge 484. In other words, once solidified, the resin overflows laterally and longitudinally from the zone Z0.
  • the solidified resin surrounds the portion of the peripheral edge 484 of the plate 48 which is located, along the axis X1, between the proximal orifice 64 and the distal and longitudinal end 46, so that the entire peripheral edge portion 484 overlapping the junction zone 26 and facing the housing 32 is encapsulated by the resin.
  • the bodies of the assembly members 82 and 84 that is to say the volumes of solidified resin contained in the cylindrical housings 62 and 64 and in the elongated housing 32 form obstacles to relative movement between the link and the strand. , in a longitudinal direction parallel to the axis X1 and in a lateral direction parallel to the axis Y1.
  • the solidified resin which is in contact with the surfaces 327 in the first lobe 322 and with the surface 325 in the second lobe 324 also opposes a rimpedement of the link 2 and of the strand 4 along the axis X1.
  • the solidified resin which is in contact with the surfaces 329, 327, 323, 325 therefore opposes a relative movement of the link and of the strand, along the axis Y1.
  • the assembly members 82 and 84 secure the link 2 and the strand 4 in the directions of the axes X1 and Y1.
  • These assembly members also join the link 2 and the strand 4 along the transverse axis Z1, because of the cooperation of the flanges 86 and 88 respectively formed on the transverse sides CT1 and CT2 with the link 2 and the strand 4 along the Z1 axis.
  • These soles also contribute to securing the link 2 and the strand 4 in the directions parallel to the axes X1 and Y1.
  • a part of the solidified resin extends through the passage zone ZP, being one piece with the assembly members 82 and 84 and with their soles 86 and 88.
  • This part of solidified resin forms a block 90 of synthetic material, which isolates the peripheral edge 484 of the plate 48 from the neighboring warp threads when the heald 1 is mounted within the loom M.
  • the quantity of solidified resin present on the first transverse side CT1 is thick enough to constitute another block 91 of synthetic material which covers the mouth of the proximal cavity 44 and isolates the edge portion 25 which overlaps the plate 48.
  • the total quantity of solidified resin distributed around the assembly zone between the parts 2 and 4 makes it possible to soften the external shape of the heddle 1, by encapsulating the protruding edges, and limits the risks of damaging adjacent warp threads, during use of the heddle 1 within the me tier M.
  • This quantity of solidified resin is in one piece and extends over the two transverse sides CT1 and CT2 of the IR covering interface, in particular through the passage zone ZP.
  • the ends of the link 2 have no longitudinal tabs.
  • a distal circular orifice 32 and a proximal circular orifice 34, passing right through the link between the transverse face 28 and the transverse face 29, are provided in two end portions 26 of the link 2 which extend, by relative to the eyelet 22, beyond two notches 30 similar to those of the first embodiment.
  • Each of the orifices 32 and 34 crosses the link 2 right through in directions parallel to the axis Z2, between its transverse faces 28 and 29 respectively visible to the figure 10 and 11 .
  • a plate 48 of the end portion 42 of the strand 4 is provided with three orifices which cross it from side to side, in directions parallel to the axis Z4, namely a circular and distal orifice 62, an orifice circular and proximal 64 and an intermediate orifice 68, arranged along the axis X4, between the orifices 62 and 64.
  • the orifice 68 is open V-shaped, with its branches 682 and 684 which diverge while moving away of the longitudinal and distal end 46 of the strand 4.
  • the orifices 62, 64 and 68 have a closed contour.
  • an IR covering interface by the surface S48 of the plate 48, defined as in the first embodiment, the plate 48 extending to the orifice 64.
  • This IR overlapping interface is also formed, on the link 2, by the surface S26 of the end portion 26 which receives in support the terminal portion 42 of the strand 4, more particularly the plate 48.
  • the surface S48 forms a face covering link 2 with strand 4.
  • Surface S26 forms a face covering strand 4 with link 2.
  • the trace of the IR covering interface is visible at figure 12 .
  • the IR overlay interface is defined around holes 32 and 34 on link 2 and around holes 62 and 68 on strand 4. Holes 62, 64 and 68 each extend between surface S48 of the IR overlap and the outer peripheral surface 56 of strand 4.
  • the IR recovery interface is parallel to the X1 and Y1 axes and its trace in the plane of the figure 12 is a succession of horizontal line segments.
  • the orifice 64 extends beyond the peripheral edge 38, in particular beyond its longitudinal and distal end 39, with respect to the covering surface S26.
  • a portion 642 of the outline of the orifice 64 is defined outside the vis-à-vis, along the axis Z1, with the solid part of the transition zone 26 of the link 2.
  • the orifice 64 is opposite along the axis Z1 a portion of the peripheral edge 38 consisting of the longitudinal and distal end 39.
  • the projection of the outline of the orifice 64 is tangent with the projection of an outline of the peripheral edge 38.
  • the orifice 64 is not a housing of a pair of housings within the meaning of the invention.
  • the contour portion 642 is arranged outside the vis-à-vis along the axis Z1 with the orifices 32 and 34 of the link 2.
  • the orifice 64 extends only partially, relative to the covering surface of the link 2, beyond the peripheral edge of the link 2.
  • the entire contour 64 is outside of the vis-à-vis with the solid part of the link 2 along the transverse axis.
  • Peripheral edge 38 overlaps along axis Z1 with surface S48 of plate 48 facing link 2.
  • the contour of the orifice 68 is denoted 685.
  • the rounded end portions of the contours of the branches 682 and 684 are denoted 686. These contour portions 686 form part of the contour 685 and are not opposite each other, according to the axis Z1, with the solid part of the transition zone 26 of the link 2, nor with the orifices 32 and 34.
  • a first passage zone ZP1 is delimited by the contour portion 642 and the longitudinal and distal end 39 which belongs to the edge 38, facing the orifice 64 along the axis Z4.
  • This first passage zone ZP1 can be qualified as a “central” passage zone because it is located overall on the axis X1.
  • two lateral passage zones ZP2 and ZP3 are defined on either side of the axis X1, beyond the edge 38 with respect to the orifice 32 and to the surface S26, facing the ends free from the branches 682 and 684 of the intermediate orifice 68.
  • These second passage zones are each delimited by the contour portions 686 of the branches 682 and 684 and by a portion 382 of the edge 38 visible through the branches 682 and 684 at the figure 11 .
  • passage zones ZP1, ZP2 and ZP3 which each extend outside an IR overlap interface defined between the strand 4 and the link 2. More precisely the three passage zones ZP1, ZP2, ZP3 are each outside the vis-à-vis, along the Z1 axis, with the IR overlap interface, outside the vis-à-vis, along the Z1 axis, with a solid part of the link 2 and outside the vis-à-vis, along the axis Z1, of the housings 34 and 32.
  • these passage zones ZP1, ZP2 and ZP3 are empty, i.e. they are not crossed by either the solid part of link 2, nor by the solid part of strand 4.
  • the orifices 34 and 62 are arranged facing each other in a direction parallel to the axis Z1 and together form a pair of housings 34+62 in which a first assembly member 82 can be formed. , by solidification of a resin, this first assembly member being, in this example also, in the form of a rivet.
  • a second assembly member 84 also in the form of a rivet in this example, is formed in the pair of housings 32+68 consisting of orifices 32 and 68 aligned in a direction parallel to the axis Z1.
  • a surface S44 provided on the strand 4 is inclined in the direction of the axis X1, of the overlapping interface IR and of the longitudinal and distal end 46, as in the first embodiment.
  • This surface S44 is also inclined in the direction of the passage zones ZP1, ZP2 and ZP3.
  • a point of application PA of the fluid resin is provided on this inclined surface S44.
  • the fluid resin applied to this surface then flows in the direction of the orifices 32 and 34, as well as in front of the peripheral edge 38, that is to say beyond the edge 38 with respect to the solid part of the portion of end 26.
  • the block 90 of solidified resin extends transversely on either side of the plane containing the axes X1 and Y1, on the two transverse sides CT1 and CT2 of the assembly zone between the link 2 and the strand 4, so that it isolates this assembly zone from the outside of the heddle, encapsulating the protruding reliefs, such as the part of the edge 38 located in the vicinity of the longitudinal and distal end 39 of the link 4.
  • the blocks 92 and 94 isolate the side portions of edge 38, located on either side of end portion 26 along axis Y1 and located transversely overlapping plate 48.
  • Blocks 90, 92 and 94 of solidified resin are one-piece with assembly members 82 and 84 and with resin flanges 86 and 88 formed respectively on the first transverse side CT1 and on the second transverse side CT2, as in the first embodiment.
  • the first transverse side CT1 is located, with respect to the IR overlap interface, on the side of the plate 48 of the strand 4 and the orifices 62, 64 and 68, while the second transverse side CT2 is located, with respect to this surface, on the link 2 side and its peripheral edge 38.
  • the flow of the resin before solidification is limited by the rectilinear notches 30 provided on the two side faces 28 and 29 of the link 2, as well as by a notch 31 provided on the outer peripheral surface 56 of the strand 4, on the side visible to the figure 11 , that is to say on the side of the strand 4 opposite to the inclined surface S44.
  • the notch 31 extends in a plane perpendicular to the axis Z1.
  • This notch 31 is V-shaped open in the direction of the longitudinal and distal end 46 of the strand 4. It can be made by molding during the manufacture of the strand 4 or by subsequent machining. It stops at a distance from the side edges of the strand 4.
  • the ratio of the length of the notch 31 measured parallel to the axis Y4 to the width of the strand at the level of this notch 31 is between 0.6 and 0.95, preferably equal to 0.8.
  • this notch 31 can be made to have the same thickness, along the axis Z1, as the notches 30 or a similar thickness.
  • the quantity of solidified resin present on either side of the overlapping parts of the link 2 and of the strand 4 extends, along the axis X1, between one of the notches 30 and the surface S44 on the side of rail 1 visible at figure 10 and between notches 30 and 31 on the opposite side of the stringer, visible at figure 12 .
  • This quantity of solidified resin comes into contact with and isolates the protruding parts, including the portions 382 and 39 of the edge 38 of the end portion 26 and the edge 484 of the plate 48 in transverse overlap of the link 2, which therefore do not risk damaging neighboring threads when heddle 1 is used in loom M.
  • This portion 384 is not opposite, along axis Z1, housings 32, 64 and 68.
  • the resin which passes through the passage zones ZP, ZP2 and ZP3 extends in contact with a part of the portion 384 of the peripheral edge 38. In other words, once solidified, the resin overflows laterally and longitudinally volumes situated, along the edge 38, opposite along the axis Z1 of the passage zones ZP1, ZP2 and ZP3.
  • the housing 32 passes through, along the transverse axis Z1, between the covering face S26 provided on the link 2, which locally defines the IR covering interface, and the external surface 28 which is also provided on the link 2, whereas, in the second embodiment, the housings 62 and 68 pass through, along the transverse axis Z1, between the covering face S48 provided on the strand 4, which locally defines the IR recovery interface, and the external fax 56 also arranged on strand 4.
  • each passage zone ZP, ZP1, ZP2 or ZP3 is delimited, in a first part, among the link 2 and the strand 4, by a portion of a closed contour delimiting an orifice passing through this first part. part, along the transverse axis and, in the second part, by a portion of a peripheral edge of this second part.
  • the first part is the link 2 in which the elongated housing 32 is a through hole and has a closed contour formed by the surfaces 323 to 329, the surface 323 of which is not opposite each other, along the axis Z1, of the solid part formed of the plate 48 nor opposite, along the axis Z1, of the housings 62 and 64 of the strand 4.
  • the second part is the strand 4 and the zone ZP passage is formed at the portion 4842 of the peripheral edge 484.
  • the first part is the strand 4 in which the through holes 64 and 68 each have a closed contour including a portion 642, respectively 686 , is not vis-a-vis along the axis Z1 of the solid part formed by the end portion 26 nor vis-à-vis along the axis Z1 of the housings 32 and 34 of the link 2, while by defining zones ZP1, ZP2 and ZP3.
  • the second part is the link 2 and the passage zones ZP1, ZP2 and ZP3 are respectively formed at the level of the portions 39 and 382 of the peripheral edge 38.
  • the passage zone ZP, ZP1, ZP2 or ZP3 is shifted from the overlapping interface IR in the directions of the axes X1 and Y1.
  • a housing of the pair of housings which is through and the peripheral edge mentioned above are respectively arranged on two opposite transverse sides CT1 and CT2 of the IR covering interface.
  • the passage zone is traversed by the solidified resin over its entire extent, that is to say over its entire section. However, this is not mandatory.
  • the overlay interface is contained in a single plane. However, this is not mandatory.
  • the recovery interface can be tiered.
  • the overlap faces defined on the link 2, respectively on the strand 4, are then non-coplanar.
  • At least one of the passage zones ZP or ZP1 is aligned, along the longitudinal axis X1 of the heddle 1, with at least one housing of the pair of housings 32+62, 32+64 or 34+ 62 and 32+68 in which is formed an assembly member 82 or 84, preferably a housing of the part, the peripheral edge of which delimits the passage zone.
  • At least one of the blocks 90, 92, 94 of resin forms a part separate from the assembly members 82 and 84. Resin is then deposited at several points on the first transverse side CT1.
  • the resin which forms the blocks 90, 92, 94 is of identical composition to the resin which forms the assembly members 82 and 84. This is however not obligatory.
  • an elongated housing in the form of a "keyhole”, such as the elongated housing 32 of the first embodiment, may comprise several pairs of intermediate front abutment surfaces, offset along the axis longitudinal X1 of the beam.
  • a single assembly member 82 and 84 is provided. According to another variant, three or more such members are provided.
  • the link can be sandwiched into the strand, being caught between two surfaces in a transverse direction parallel to the axis Z1.
  • the transverse overlapping of parts 2 and 4 takes place on two overlapping surfaces of the link.
  • the above observations regarding the IR surface are then applicable to at least one of these two covering surfaces.
  • the heddle body 10 comprises only a single strand 4.
  • the quantity of solidified resin which constitutes the assembly members 82 and 84 is advantageously applied from a single transverse side CT1 or CT2 of the heddle being manufactured, on the side of the first part and is distributed at the level of the peripheral edge of the second part, on the opposite transverse side CT2 or CT1, crossing the passage zone(s) ZP or ZP1, ZP2 and ZP3.
  • This quantity of material covers the transition zones between the link and the strand and limits the risks of snagging with neighboring warp threads during weaving, without interfering with the filling of the pairs of housings in which the assembly 82 and 84, after solidification of the resin.
  • the inclined surfaces S44, S66 provided on one or on each of the parts 2 and 4 allow the spreading of the resin, even if the resin is deposited only at one point PA, which allows standardization and automation. of the manufacturing process for the rail 1.
  • the passage zone has a section greater than or equivalent to the minimum section of the housings of the pairs of housings taken in a plane perpendicular to the transverse axis.
  • At least one passage zone namely the passage zone ZP in the first embodiment and the passage zones ZP2 or ZP3 in the second embodiment, is formed in a through hole 32 or 68 which also belongs to a pair of housings in which an assembly member 82 or 84 is formed.
  • the resin deposited in or close to this pair of housings is guided towards this passage zone ZP, ZP2 or ZP3. This avoids the accumulation of excess resin in certain areas of the rail.
  • the passage zone ZP or ZP1 which is delimited by the distal longitudinal end 46 or 39 of the second part 4 or 2, allows a compact connection in a lateral direction.
  • this sole forms a protective covering of the transverse external faces of the strand and of the link.
  • this sole is continuous in the longitudinal and lateral directions and as it covers certain portions of the peripheral edges of these parts, it forms an external surface of progressive transition between the link and the strand, which also limits the risks of a neighboring warp thread on the strand or the link.
  • peripheral edge 484 or 38 which delimits the passage zone is external and distinct from a housing of the pair or pairs of housings.
  • all the housings of the pairs of housings have a closed contour.
  • the notches 30 and 31 limit the progression of the resin in the direction of the eyelet 22 or in the direction of the attachment means 11A and 11B. As they are provided at a distance from the edges and side edges of the parts 2 and 4, they do not weaken the mechanical strength of the part 2 or 4 in which they are made, nor the surface condition of these ridges or side edges against which the neighboring warp threads may rub during weaving.
  • a treatment other than ultraviolet can be used to solidify the resin.
  • the resin used is of the epoxy or acrylic type.
  • the invention is shown in the figures in the case where it is used with a heddle 1 for a harness H of loom M of the Jacquard type. However, it is applicable to a smooth frame whose two hooking means allow it to be connected to a crosspiece of a smooth frame.
  • the loom is not a Jacquard-type loom but a loom equipped with a dobby or a cam mechanism.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP20215381.3A 2019-12-20 2020-12-18 Lisse pour métier à tisser et harnais équipé d'une telle lisse Active EP3839115B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1915240A FR3105269B1 (fr) 2019-12-20 2019-12-20 Lisse pour métier à tisser et harnais équipé d’une telle lisse

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EP3839115A1 EP3839115A1 (fr) 2021-06-23
EP3839115B1 true EP3839115B1 (fr) 2022-09-07

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EP (1) EP3839115B1 (ko)
KR (1) KR20210080254A (ko)
CN (1) CN113005594B (ko)
BR (1) BR102020025745A2 (ko)
FR (1) FR3105269B1 (ko)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1908863B1 (de) * 2006-10-06 2009-04-08 Groz-Beckert KG Weblitze für Jacquardwebmaschine
EP3009543B1 (fr) * 2014-10-16 2018-09-19 Staubli Lyon Lisse pour métier à tisser et métier à tisser équipé d'une telle lisse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888256B1 (fr) 2005-07-06 2007-09-21 Staubli Lyon Sa Dispositif d'accrochage entre elements d'un dispositif de formation de la foule, son procede de fabrication et procede d'accrochage au moyen d'un tel dispositif
FR2891282B1 (fr) * 2005-09-27 2007-11-16 Staubli Lyon Sa Procede de fabrication d'une lisse, lisse de mecanisme de formation de la foule et metier a tisser incorporant une telle lisse.
FR3027315B1 (fr) * 2014-10-16 2019-04-26 Staubli Lyon Lisse pour metier a tisser et metier equipe d'une telle lisse
FR3027313B1 (fr) * 2014-10-16 2016-11-18 Staubli Lyon Lisse pour metier a tisser, metier a tisser equipe d'une telle lisse et procede de fabrication d'une telle lisse
FR3054246B1 (fr) * 2016-07-25 2018-08-31 Staubli Lyon Lisse pour metier jacquard, son procede de fabrication, et metier a tisser comprenant une telle lisse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1908863B1 (de) * 2006-10-06 2009-04-08 Groz-Beckert KG Weblitze für Jacquardwebmaschine
EP3009543B1 (fr) * 2014-10-16 2018-09-19 Staubli Lyon Lisse pour métier à tisser et métier à tisser équipé d'une telle lisse

Also Published As

Publication number Publication date
FR3105269A1 (fr) 2021-06-25
FR3105269B1 (fr) 2021-12-31
CN113005594B (zh) 2024-05-24
KR20210080254A (ko) 2021-06-30
CN113005594A (zh) 2021-06-22
EP3839115A1 (fr) 2021-06-23
BR102020025745A2 (pt) 2021-07-06

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