EP3009544B1 - Litze für webrahmen, mit einer solchen litze ausgestatteter webrahmen, und herstellungsverfahren einer solchen litze - Google Patents

Litze für webrahmen, mit einer solchen litze ausgestatteter webrahmen, und herstellungsverfahren einer solchen litze Download PDF

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Publication number
EP3009544B1
EP3009544B1 EP15189876.4A EP15189876A EP3009544B1 EP 3009544 B1 EP3009544 B1 EP 3009544B1 EP 15189876 A EP15189876 A EP 15189876A EP 3009544 B1 EP3009544 B1 EP 3009544B1
Authority
EP
European Patent Office
Prior art keywords
heddle
housings
housing
eye
axis
Prior art date
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Active
Application number
EP15189876.4A
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English (en)
French (fr)
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EP3009544A1 (de
Inventor
Michel Herrmann
Philippe Gaubert
Damien Bouchet
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 EP3009544A1 publication Critical patent/EP3009544A1/de
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    • 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
    • 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
    • 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
    • D03C9/02—Healds
    • D03C9/026—Material used

Definitions

  • the invention relates to a heddle for guiding a warp yarn for a loom, as well as to a loom equipped with such a heddle.
  • the invention also relates to a method of manufacturing such a heddle.
  • a Jacquard-type loom is equipped with a Jacquard mechanism which controls several hooks.
  • Each hook controls one or more arches.
  • Each arch is connected to one end of a guide rail of a warp wire, which is connected by another end to a frame of the loom via a return spring.
  • Each arm is provided with an eyelet for passing the chain thread and is made up of a link and a beam body including two strands. These parts can be manufactured separately. The beam is then called composite and needs to be assembled before it is put in place.
  • EP-A-1908863 it is known to EP-A-1908863 to use a beam body made of plastic material and a ceramic or hard metal link.
  • the beam body is molded onto the link.
  • This overmolding process generates burrs when the mold closes around the link during injection of the plastic material.
  • the smooth should be resurfaced by polishing to remove burrs. Indeed, these burrs could damage the neighboring threads when they rub on the heddle during weaving.
  • CN-Y-201228205 furthermore discloses a stringer which, in the embodiment of figures 4 to 6 , includes a porcelain link in which are formed two through openings and four recessed areas. The strands of the stringer body are overmolded in these through openings and in these recessed areas. This overmolding generates the same problems as those mentioned above.
  • the invention more particularly intends to remedy by proposing a composite heddle, the link of which and the heddle body form an assembly having a high resistance to forces and a limited size.
  • the invention relates to a heddle for guiding a warp yarn for a loom, the heddle extending lengthwise along a longitudinal axis and comprising a heddle body comprising at least one strand.
  • the smooth also comprises at least one link including at least one housing and an eyelet for passing the warp thread.
  • the heddle body comprises at least one housing, while the housing of the link and the housing of the heddle body extend along the same axis transverse to the longitudinal axis.
  • the housing of the stringer body is opposite the housing of the link, these two housings together forming a pair of housings, while an assembly member made of solidified resin is placed in the pair of housings.
  • the resin assembly member ensures good transmission of the longitudinal connection forces between the link and the heddle body in the manner of rivets.
  • the connection forces can be transmitted through the resin assembly member in three directions: longitudinal, lateral and transverse.
  • the resin assembly members have no play in the housings and do not stress the link and the heddle body during the installation and hardening of the resin.
  • the invention also relates to a weaving loom equipped with several heddles for guiding a warp thread.
  • This loom is characterized in that at least one guide rail is as mentioned above.
  • the Jacquard-type M loom shown in figure 30 is equipped with a Jacquard mechanism 102 which controls several hooks 104, a lower end of which is associated with several arches 106.
  • a lower end 106a of each arch 106 is connected to an upper end 1a of a guide rail 1 of a wire chain, each beam 1 being subjected to the action of a return spring 108 fixed to a hooking beam 110 by a rod 112, the beam 110 being fixed to a frame of the loom M.
  • the elements 106, 1, 108, 110 and 112 form a harness H of the M trade.
  • the figures 1 to 11 show a first embodiment of a guide rail 1 for a warp yarn of the loom M.
  • the guide rail 1 extends lengthwise along a longitudinal axis X1 and comprises a rail body 10 and a link 2.
  • the rail body 10 comprises two separate strands 4.
  • Y1 and Z1 two axes of the beam 1, perpendicular to the axis X1, the axis Y1 corresponding to the width of the link 2, while the transverse axis Z1 corresponds to its thickness.
  • connection means 11A or 11B to a spring 108 or to an yoke 106.
  • connection means 11A comprise an external thread 12 which is intended for to be screwed into a spring 108.
  • connection means 11B are intended to be connected to an arch 106 of the Jacquard harness H.
  • the means 11B comprise an end piece 14 which forms an opening 16 for the passage and wedging of the arch 106 and a rigid connection tube 18, produced made of plastic or metal, which is mounted around the strand 4 with the possibility of movement along the axis X1 relative to the opening 16.
  • the connection means 11B comply with EP-B-1 741 815 .
  • other connection means can be provided at the ends of the rail body 10.
  • the link 2 is plane and extends lengthwise along a longitudinal axis X2.
  • Y2 a lateral axis, perpendicular to the axis X2.
  • the link 2 includes a central portion 20 which has lateral edges 21 rounded off by polishing.
  • the central portion 20 is provided with an orifice which forms an eyelet 22 for passing a warp yarn, which eyelet 22 passes right through the link 2 along a transverse axis Z2, perpendicular to the axes X2 and Y2.
  • the axes X2, Y2 and Z2 are concurrent at the center of the eyelet 22.
  • the eyelet 22 is rectangular in shape in a main plane P of the link 2 which contains the axes X2 and Y2.
  • the figures 1 and 2 are parallel to this principal plane P, which is visible at the figure 8 .
  • the axes X2, Y2 and Z2 are respectively merged with the axes X1, Y1 and Z1 of the beam 1.
  • the link 2 is symmetrical with respect to a plane of symmetry P S which contains the axes Y2 and Z2.
  • L22 denotes the length of the eyelet 22 measured parallel to the longitudinal axis X2 and L20 the length of the central portion 20 of the link 2 measured parallel to the axis X2. This length L20 is greater than or equal to five times the length L22.
  • l22 the width of the eyelet 22 measured parallel to the lateral axis Y2.
  • l20 the width of the central portion 20 of the link 2 measured parallel to the axis Y2.
  • the width l22 of the eyelet 22 is greater than half of the width l20 of the central portion 20 of the link 2 and it is preferably equal to 60% of the width l20.
  • the central portion 20 of the link 2 is extended on each side along the longitudinal axis X2 by a tab 24.
  • the tabs 24 have, along the axis Y2, a width l24 reduced relative to the central portion 20.
  • Each tab 24 has a free longitudinal end 240 opposite to the central part 20. The reduction in width along the Y2 axis is progressive, from the central portion 20 towards each tab 24.
  • the central portion 20 has, in the vicinity of each tab 24, two rounded cams 23 which provide the junction between the part of width l20 of the central portion 20 and the adjacent tab 24. There is 25 a transition zone defined in the central portion 20 in the vicinity of a tab 24 and bordered by cams 23.
  • the link 2 includes a housing 26 at the level of each transition zone 25.
  • the housings 26 are formed by holes passing through the link 2 right through parallel to the axis Z2 and have a circular section in the main plane P.
  • the housings or holes 26 have an oblong or polygonal section in the main plane P.
  • the housings 26 are intended to receive resin.
  • each edge 27 is provided with two notches 28A and 28B offset along the axis X2 and which form resin receiving housings, as is apparent from the following explanations.
  • the notches 28A and 28B extend over the entire thickness of the tabs 24 in the direction of the axis Z2 and are in the form of rectangular slots in the main plane P. According to a variant, the notches 28A and 28B of the link 2 are in the form of semi-circular crenellations in the main plane P. On each side of the link 2, the housing 26 and the notches 28A and 28B are offset, along the longitudinal axis X2, with respect to each other.
  • Link 2 is made of single-thickness metal.
  • the link 2 is manufactured by cutting a sheet of treated steel and its edges 21 are taken up by polishing, in order to present non-aggressive rounding for the wires.
  • the link 2 is made of polyamide, glass or ceramic, metallic and ceramic materials being preferred for their hardness.
  • the thickness of the tabs 24 is denoted by e24, measured parallel to the axis Z2.
  • X4, Y4 and Z4 a longitudinal axis and two transverse axes of a strand 4.
  • the axes X4, Y4 and Z4 are respectively merged with the axes X1, Y1 and Z1 of the beam 1.
  • Each strand 4 comprises a rod 41 having a round section along a transverse plane P T perpendicular to the longitudinal axis X4 and parallel to the axes Y4 and Z4.
  • the rod 41 extends lengthwise between a first longitudinal end 42 on which the connecting means 11A or 11B are provided and a second longitudinal end 44 at which the assembly is made with the link 2.
  • each strand 4 widens along the lateral axis Y4 and tapers along the transverse axis Z4, moving away from the rod 41.
  • each end 44 has a transverse section which s 'flattens away from rod 41.
  • each strand 4 has a single receiving cavity 48 which receives a tab 24 of link 2.
  • the receiving cavity 48 opens out. in the direction of the longitudinal axis X4 and in the direction of the transverse axis Z4.
  • the receiving cavity 48 is delimited laterally in the direction of the axis Y4 by two side walls 49.
  • the receiving cavity 48 has a bottom 51 which delimits it along the transverse axis Z4.
  • the bottom 51 has progressive variations in width l51 along the axis X4.
  • the bottom 51 of the cavity 48 is extended, in the direction of the longitudinal axis X4 towards the link 2, by a final portion 52 which protrudes longitudinally from the side walls 49.
  • the final portion 52 has a free end 54.
  • the final portion 52 tapers towards the free end 54 in width along the lateral axis Y4 and also in thickness along the transverse axis Z4.
  • the final portion 52 has two edges 52A and 52B which converge towards the axis X4 while approaching the free end 54.
  • the final portion 52 is at the same level as the bottom 51.
  • the side walls 49 each extend by a bevelled edge 50 towards the final portion 52, the beveled edges 50 making the transition between the side walls 49 and the final portion 52.
  • Each side wall 49 has an interior surface 490 which has a rough and / or striated surface condition obtained directly during the manufacture of strand 4.
  • p48 the depth of the receiving cavity 48 measured parallel to the transverse axis Z4 at the level of the side walls 49.
  • the depth p48 varies along the axis X4.
  • the depth p48 is greater than the thickness e24, so that, when the tab 24 is received in the cavity 48 of the strand 4 with the tab 24 in contact with the bottom 51, the side walls 49 protrude beyond the tab 24 in a direction parallel to the axes Z2 and Z4.
  • Each cavity 48 is generally complementary to the tab 24 which it receives.
  • the depth p48 is equal to the thickness e24.
  • housings 46A, 46B and 46C are formed by holes passing through the end 44 right through parallel to the transverse axis Z4.
  • the two housings 46A and 46B pass through the bottom 51 of the receiving cavity 48, while the housing 46C passes through the final portion 52 of the strand 4.
  • the three housings 46A, 46B and 46C are offset along the longitudinal axis X4.
  • the two housings 46A and 46B open into the longitudinal groove 56A and the housing 46C opens into the longitudinal groove 56B.
  • Each housing 46A, 46B and 46C has a circular section.
  • the housings 46A, 46B and 46C are holes having an oblong or polygonal section.
  • Strand 4 is made of polyamide and is manufactured by injection.
  • the strand 4 is reinforced with fibers, for example glass or carbon fibers.
  • the external thread 12 and the end piece 14 of the connection means 11A and 11B are integral with the rods 41.
  • the rounded cams 23 of the link 2 are arranged longitudinally covering the final portion 52, so that, at the level of the transition between the link 2 and each strand 4, the central portion 20 of the link 2 and the strand 4 overlap one on the other.
  • the transition between the link 2 and each strand 4 does not occur suddenly at the level of the longitudinal ends 240 and 44 of the two parts but, on the contrary, it takes place while the link 2 and the strand 4 overlap.
  • l54 the width of the free end 54 of the final portion 52 measured parallel to the lateral axis Y4.
  • l23 the width of the link 2 between the rounded cams 23, this width l23 being measured parallel to the axis Y2 and along the axis X2 at the same longitudinal level as the free end 54 when the beam is assembled.
  • the width l54 is less than the width l23. This geometry limits the risks of the wires catching in friction against the beam 1.
  • the link 2 and each strand 4 respectively overlap in the longitudinal direction X1, so that the housings 46A and 46B are respectively facing each other along the axis Z1, with the notches 28A and 28B and so as to that the housing 46C is vis-à-vis along the axis Z1 with the housing 26.
  • the housings 26, 28A and 28B of the link 2 and the housings 46A, 46B and 46C of the strand 4 then form five pairs of housings.
  • the pair of housings 31 is formed by the housing 46A and by the notch 28A located above the axis X1 in this figure and which is closest to the free end 240.
  • the couple of housings 32 is formed by the housing 46A and by the notch 28A located below the axis X1 in this figure and which is the closest to the free end 240.
  • the pairs 33 and 34 are respectively formed by the housing 46B and the notches 28B arranged respectively above and below the axis X1 and which are furthest from the free end 240.
  • the pair of housings 35 is formed by housings 46C and 26.
  • the two strands 4 are placed on a horizontal flat bearing surface, the cavities 48 being open on the top, that is to say emerging on the same side along the axis Z1 .
  • the strand 4, which is intended to be linked to an arch, is provided with its connection tube 18 prior to assembly with the link 2.
  • the link 2 is then placed on the two strands 4, with its legs 24 engaged in each of the cavities 48, in contact with the bottoms 51 of the cavities 48.
  • the housings 26, 28A, 28B of the link are positioned so that they are in vis-à-vis two by two with the housings 46A, 46B, 46C of the rail body.
  • the housings 26, 28A, 28B communicate with the housings 46A, 46B, 46C and open on the same side of the beam along the Z1 axis, which allows to deposit the volumes of resin which will constitute all the assembly members on the same side of the rail at which the receiving cavities 48 of the strand emerge.
  • a controlled quantity of epoxy resin is then deposited in each pair of housings 31 to 35.
  • the resin is an acrylic resin. This resin is deposited in each pair of housings when it is still liquid and spreads under the effect of gravity so that it fills each pair of housings. The excess resin is distributed in the grooves 56A and 56B and in the receiving cavity 48. Finally, the resin is hardened by heating at a temperature which depends on its composition. Alternatively, the resin cures at room temperature or under ultraviolet or LED radiation. The resin solidifies in the housing pairs. The solidified resin then forms assembly members 61, 62, 63, 64 and 65 in the form of rivets which each extend from the link towards the heddle body along the axis Z1.
  • the resin is therefore deposited from each housing 26, 28A, 28B of link 2 and spreads under the effect of gravity and by capillary action into the housings 46A, 46B, 46C of the rail body and into the grooves 56A and 56B.
  • the cavities 48 and the tabs 24 of the link 2 remain visible during the operation of placing and curing of the resin.
  • each assembly member or rivet 6i has no play in the pair of housings 3i.
  • Each rivet 6i is in one piece and comprises a body 6A which is located at the level of the couple of housings 3i, more precisely which extends through the link 2 and through the heddle body 10 along the axis Z1 from the housing of the link of the pair of housings 3i to the housing of the heddle body of the pair of housings 3i.
  • the body 6A extends overall in the direction Z1 as well as visible on the figures 8 and 11 .
  • Each rivet 6i also has a head 6B, on each side of the body 6A, on either side of the pair of housings 3i.
  • Each head 6B forms an end part of the rivet 6i which is enlarged relative to the adjacent part of the body 6A of the rivet 6i.
  • the heads 6B are formed from the excess resin which overflows on the end 44 in the grooves 56A and 56B and on the tab 24 received in the receiving cavity 48.
  • the heads 6B on the side of the grooves 56A and 56B are disc-shaped.
  • the head 6B of the rivet 65 is also disc-shaped, while the heads 6B of the rivets 61 to 64 are in the form of rectangular studs with rounded edges.
  • the rivets 61 and 62 are connected.
  • the body 6A of the rivet 61 received in the housing 46A is in one piece with the body 6A of the rivet 62 received in the housing 46A and the heads 6B of the two rivets 61, 62 arranged in the groove 56A are in one piece.
  • housing 46B, pairs 33 and 34 and rivets 63 and 64 are connected.
  • rivets 6i provide a connection between the final end 44 of each strand 4 and the corresponding tab 24 of the link 2.
  • the assembly rivets 6i act as obstacles arranged between the strand 4 and the link 2.
  • each rivet or obstacle 6i is engaged in link 2 and in strand 4 in both directions of axis X1 so that the breaking of the resin bodies 6A is necessary to allow relative movement between link 2 and strand 4 according to the longitudinal axis X1.
  • the rivets 6i secure the link 2 and the strand 4.
  • To transmit the connection forces along the axis X1 a section of each body 6A is stressed in shear. The binding forces are therefore not transmitted by adhesion at the level of the interfaces of the resin with the body or the link.
  • the heads 6B of the rivets 6i prevent the link 2 and the strand 4 from moving away in the transverse direction Z1.
  • the volume of resin between the notches 28A, 28B and the edges 49 as well as the rivet 65 secure the link 2 and the strand 4 along the lateral axis Y1.
  • the rivets 6i ensure a connection of the link 2 with the strand 4 around the axes X1, Y1 and Z1.
  • the advantage of using rivets 6i placed in the housings in liquid form and which solidify in the housings is that the resin fills and takes the form of the housings to form an obstacle, without play with the link or the body of smooth at relative displacement of the link and of the body along at least the axis X1.
  • the use of the resin also makes it possible to optimize the geometries of the housings of the pair of housings which can be of different geometries and of different sections.
  • the rivets 6i do not stress the link 2 or the strands 4 during their installation and the hardening of the resin, unlike solid rivets in the parts to be assembled.
  • the resin can extend between several housing pairs, parallel to the longitudinal X1 and lateral Y1 axes.
  • the resin then forms bridges which connect the heads 6B of some of the rivets 6i to each other.
  • a head 6B of a rivet 6i disposed in a first pair of housings is integral with the head 6B of at least one other rivet 6i disposed in a second pair of housings.
  • These first and second pairs of housings are distributed in the longitudinal direction and / or distributed in the lateral direction. In this case, the mechanical locking force of the beam body and the link is improved.
  • the grooves 56A and 56B may, as a variant, be communicating to allow the creation of a bridge between the rivets 61, 62, 63, 64 on the one hand, and 65, on the other hand.
  • the rivet bodies 6A, the rivet heads 6B and any bridges remain contained in the interior volume of the receiving cavity 48 and in the volume of the grooves 56A and 56B on the opposite side.
  • the cavity 48 and the grooves 56A and 56B then protect the neighboring son from friction with the rivets 6i.
  • the receiving cavity 48 is formed in the link 2 and the end 44 of the strand 4 is of reduced width and received in this cavity 48.
  • the strand 4 and the link 2 overlap in the longitudinal direction and form the pairs of housing 3i.
  • the figures 12 and 13 show a second embodiment of a guide rail 1001 for a warp thread of a Jacquard type loom.
  • the elements of the second embodiment bear the same references as those of the first embodiment, increased by 1000. In the following, we will not describe in detail the elements of the second embodiment which are similar to those of the first embodiment. .
  • the heddle 1001 comprises a one-piece heddle body 1010 provided with two strands 1004 which extend to the ends comprising means (not shown) for connection to an element of the harness of the loom.
  • the one-piece body 1010 comprises an enlarged central portion 1040 and two housings 1046 distributed, in the longitudinal direction X1, on either side of an opening 1043, and which pass through this portion 1040 right through in the direction of the transverse axis Z1.
  • the smooth 1001 also comprises two metal links 1002 which are in longitudinal overlap of the central portion 1040 on each side thereof along the axis Z1, in contact with the central portion 1040. Each link 1002 has two housings 1026 which pass through it.
  • Each of the two housings 1026 of the two links 1002 communicates with a housing 1046 of the strand 1004 and forms with this housing 1046 a pair of housings 1003.
  • a single link is in longitudinal overlap of the heddle body 1010.
  • each assembly rivet 1006 has two heads 1006B for maintaining the links 1002 against the strand 1004 in the direction of the transverse axis Z1.
  • Each rivet 1006 also includes a rivet body 1006A which extends in the direction Z1 through the links 1002 and the heddle body 1010 and secures the links 1002 and the strand 1004 in the directions of the longitudinal X1 and lateral Y1 axes. .
  • the rivets 1006 ensure the connection of the links 1002 with the body 1010 around the axes X1, Y1 and Z1.
  • the figures 14 to 16 show a third embodiment of a guide rail 2001 for a warp thread for a Jacquard type loom.
  • the elements of the third embodiment bear the same references as those of the first embodiment, increased by 2000. In the following, the elements of the third embodiment which are similar to those of the first embodiment are not described in detail. .
  • the figure 14 represents the 2002 link and the 2004 strands of the 2001 beam in preassembled position, before depositing the resin.
  • the 2001 heddle comprises a 2002 link and a 2010 heddle body comprising two 2004 strands.
  • the 2002 link is symmetrical with respect to a plane of symmetry P S defined as in the first embodiment and comprises at each end 2024 an opening 2029 which crosses it right through in the direction of the transverse axis Z1, which opens out in the direction of the longitudinal axis X1 facing each strand 2004 and which defines two branches at each end of the link.
  • the opening 2029 has an edge 2290 on which are formed holes 2028 which pass right through each branch in the direction of the lateral axis Y1 as visible on the figure. figure 15 .
  • the link 2002 also comprises a notch 2026 which passes through in the direction of the transverse axis Z1 and which opens into the opening 2029.
  • each strand 2004 has two zones 2047 which are narrowed in width and in thickness along the axes Y1 and Z1.
  • the narrowed areas 2047 form superficial notches on the ends 2044, both along the side edges 2027 of these ends and on their main faces parallel to the Y1 axis.
  • Each end 2044 also has a notch 2046 formed on the edge of its free end 2052 which crosses it right through in the direction of the transverse axis Z1 and which opens out in the direction of the longitudinal axis X1 facing the housing. 2026 of the 2002 link.
  • each strand 2004 is received in one of the two openings 2029.
  • Each zone 2047 of each strand 2004 is opposite along the axis Y1 of two holes 2028 of the link 2002 and forms with these holes 2028 two couples of housing 20031 and 20032, respectively 20033 and 20034.
  • the two notches 2047 and these four holes 2028 thus form the four couples of housing 20031, 20032, 20033 and 20034.
  • the notch 2046 is opposite along the Z1 axis of housing 2026 and together they form a couple of housing 20035.
  • a quantity of liquid resin is deposited in each pair of housings 2003i and, once solidified, constitutes a member 2006i in the form of a rivet which extends along the Y1 axis through the link and through the body.
  • the rivets 20061 to 20064 assemble the elements 2002 and 2004 in the directions of the longitudinal X1 and transverse Z1 axes as visible on the figure 16 .
  • the resin extends around the strands 2004 in each zone 2047 of reduced thickness up to the holes 2028 of the link 2002, as shown in figure 16 .
  • the assembly rivets 20063 and 20064 are in one piece and connected to each other on either side of the end 2044.
  • the body 6B of the rivet 20063 is in one piece with the body 6B of the rivet 20064
  • the same is true for the assembly rivets 20061 and 20062.
  • the rivets 20061 to 20064 ensure a connection of the link 2 with the strand 2004 around the axis X1, the axis Y1 and the axis Z1.
  • the assembly rivet 20065 provided in the pair 20035 is configured to form a resin obstacle in the form of a wedge with double divergence, acting to secure the link 2002 and each strand 2004 along the longitudinal axis X1 and the lateral axis Y1 of the 2001 beam.
  • the figures 17 to 22 show a fourth embodiment of a guide rail 3001 for a warp thread for a Jacquard type loom.
  • the elements of the fourth embodiment bear the same references as those of the first embodiment, increased by 3000. In the following, the elements of the fourth embodiment which are similar to those of the first embodiment will not be described in detail.
  • the heddle 3001 comprises a link 3002 and a heddle body 3010 comprising two strands 3004.
  • the link 3002 is asymmetrical with respect to a plane P S defined as for the first embodiment.
  • the link 3002 has at each end 3024 two branches 3024A and 3024B bent in opposition.
  • Each branch 3024A, 3024B comprises a housing 3026 passing right through the branch along the axis Z1.
  • the end 3044 of each strand 3004 comprises two cavities 3048 which are formed on two opposite faces of the strand 3004 along the axis Z1, each cavity 3048 having a single lateral edge 3049 and therefore opening outwards from the strand 3004 laterally along l 'axis Y1 and longitudinally along the axis X1.
  • Each cavity 3048 comprises along the axis Z1 a bottom 3051.
  • a housing 3046 extends along the axis Z1 and has a rectangular section taken perpendicular to the axis Z1.
  • the housings 3046 are blind, they open into the corresponding cavity and do not pass through the bottoms 3051 along the transverse axis Z1.
  • the branches 3024A and 3024B of the link 3002 are placed around the ends 3044 of the strands 3004, in the cavities 3048.
  • each housing 3046 of the strand 3004 is opposite in the direction of the transverse axis Z1 with the corresponding through housing 3026 and together they form two pairs of housings 3003.
  • a quantity of resin is deposited in the four pairs.
  • housing 3003 of the beam 3001 and constitutes, once hardened, assembly members 3006 in the form of a rivet.
  • Each assembly rivet 3006 consists of a body extending along the axis Z1, without a rivet head, as shown on the figure. figure 22 , and secures the link 3002 with each strand 3004 along the longitudinal axis X1 and along the lateral axis Y1, and around the axis X1, the axis Y1 and the axis Z1.
  • the connection along the transverse axis Z1 is ensured by mechanical locking due to the cooperation of each strand 3004 and the arched branches 3024A, 3024B on either side of the end 3044 of each strand 3004.
  • the figures 23 to 29 show a fifth embodiment of a guide rail 1 for a warp thread for a Jacquard type loom.
  • this embodiment is structurally close to the first embodiment mentioned above, the elements common to these two embodiments bear the same references. In the following, the elements of this fifth embodiment which are similar to those of the first embodiment will not be described in detail.
  • the link 2 of this embodiment differs from that of the first embodiment in that the edges 27 of the legs of reduced width 24 are devoid of notches 28. In other words, these edges 27 are rectilinear. Furthermore, the central portion 20 of the eyelet 22 is provided, in each transition zone 25 and in the vicinity of each tab 24, with two housings 26 which are aligned along the axis X2, which pass through the central portion 20 on both sides. part and which are circular in section.
  • each strand 4 comprises a cavity 48 which is defined between two side walls 49, a bottom 51 and a ceiling 53 opposite the bottom 51 and which connects the side walls 49.
  • the cavity 48 of this embodiment does not open out opposite the bottom 51, along a transverse axis Z4 defined as in the first embodiment.
  • a final portion 52 of the end 44 which extends the bottom 51 in the direction of the longitudinal axis X4 of the strand 4, that is to say in the direction of the longitudinal axis X1 of the rail 1 in the mounted configuration thereof, towards the eyelet 22 of the link 2, is provided with two housings 46C which pass right through this final portion 52 and which are also of circular section.
  • the cavity 48 of each end 44 receives a tab 24 of the link 2.
  • the two housings 26 formed at one end of the central portion 20 are respectively aligned with the two housings 46C formed in the final portion 52 of the adjacent strand 4.
  • Two housing pairs 35 are thus formed, each consisting of a housing 26 and a housing 46C.
  • the cavity 48 is formed in a proximal part of the end 44, that is to say in a part of this end closer to the middle of the strand 4 than the final portion 52. Furthermore, a distal cavity 48 ' is formed opposite the final portion 52, on a single transverse side of the strand 4, this cavity being defined by the dihedral formed by the face of the final portion 52 visible at the bottom. figure 24 and by the bevelled edges 50 of the walls 49 which join this face, on either side of the mouth of the cavity 48. The bottom of the distal cavity 48 'in the direction Z1 is formed by the final portion 52.
  • the cavity 48' has no side wall, that is to say -to say that it is not delimited by material walls along the lateral axis Y1.
  • This distal cavity 48 ' receives, in the mounted configuration of the beam 1, the transition zone 25 of the central portion 20 of the link 2 in which the housings 26 are formed.
  • p48 ′ the depth of the cavity 48 ′ measured parallel to the transverse axis Z4 between the final portion 52 and the end of the bevelled edges 50 furthest from the final portion 52.
  • the depth p48 ′ is constant along axis X1.
  • the thickness of the transition portion 25, measured parallel to the axis Z2, is also denoted by e25. In the assembled configuration of the beam 1, at the same longitudinal level along the axis X1, the depth p48 ′ is greater than the thickness e25.
  • l25 the width of the transition portion 25 measured parallel to the lateral axis Y1 of the beam 1.
  • l54 the width of the free end 54 of the final portion 52 also measured parallel to the Y1 axis.
  • the width l54 is less than the width l25 at the same longitudinal level.
  • the final portion 52 has a progressive reduction in width along the lateral axis Y1, in the direction of the free end 54.
  • the transition zone 25 of the link 2 is arranged along the axis X1 overlapping the final portion 52 at the longitudinal level of the cavity 48 '. This transition zone 25 has a progressive reduction in width along the lateral axis Y1 in the direction of the free end 240 of the link 2.
  • this beam when the link 2 provided with its two tabs is brought into engagement with the two strands 4 each provided with its receiving cavity 48 and its distal cavity 48 ', the housing pairs 35 are formed, it is possible to cast in each of them a rivet-type assembly member 65 made of resin. After solidification of the resin, this rivet secures the parts 2 and 4 at their covering ends.
  • the parts 2 and 4 overlap by the transition zone 25 and by the final portion 52.
  • the overlap between the parts 2 and 4 takes place at a single transverse side of each of these parts.
  • the part 2 overlaps the part 4 by a single transverse side of the part 2.
  • each of these parts 2 and 4 can be accessed from a transverse side.
  • the ceiling 53 may be pierced with an opening giving access to the interior of the cavity 48, near the closed end 484 of this cavity, that is, that is, from its end opposite to its mouth. This makes it possible, in particular, to visualize the tab 24 of the link in place in the proximal cavity 48.
  • the cavity 48 is omitted in each strand 4, as is the tab 24 at each end of the central portion 20.
  • the overlap between the parts 2 and 4 takes place only at the level of the final portion 52, by engagement of the transition zone 25 of the end of the central portion 20 in the cavity 48 ', with an overlap of a single transverse side of each of the parts 2 and 4.
  • housing pairs comparable to the housing pairs 31 to 34 of the first embodiment can extend to the level of the closed cavity 48.
  • the housing of suitable shape are provided in the tabs 24 as well as in the bottom 51 and / or in the ceiling 53 and / or in the side walls 49.
  • the housings of the tabs 24 may be notches, as in the first embodiment, or through housings with a circular section, like the housings 26 of the fifth embodiment.
  • the heddle body is preferably made of plastic material but as a variant may be metallic.
  • the resin is deposited in the housing pairs in a liquid state and then solidified so that, in the solidified state, the resin retains its shape and is able to transmit the bonding forces between the link and the heddle body.
  • the resin can also be deposited in a solid manner with play in the housings, then heated in the housings where it passes into the liquid state to spread in the housings, then solidified. In the solidified state, depending on the type of resin used, the resin may exhibit greater or lesser hardness.
  • a resin is a polymer, natural, artificial or synthetic, thermoplastic or thermosetting product, optionally added with a hardener or adjuvants, such as solid reinforcements, for example in the form of fibers.
  • the body of the assembly member formed is composed of a volume of the first housing of the couple of housings, of a volume of the second housing of the couple of housings as well as a possible volume of communication between these two volumes.
  • a part of the body and / or of the head of an assembly member arranged in a first pair of housings can be integral with a part of the body and / or of the head. or the head of another assembly member arranged in a second pair of housings which is offset in the longitudinal direction with respect to the first pair of housings.
  • each housing is formed set back from the adjacent side edge of the link or the stringer body.
  • two housings are opposite if they are at least partially opposite one another and communicate with one another before the resin is deposited.
  • the M trade is represented at figure 30 with smooth 1 according to the first embodiment. It can also be fitted with stringers 1001, 2001, 3001 and 1 of the other embodiments.
  • the invention is described above in the context of its application to a Jacquard type loom. It is however applicable to beams for frames and to frames for frames.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Prostheses (AREA)

Claims (15)

  1. Litze (1; 1001; 2001; 3001) zur Führung eines Kettfadens für eine Webmaschine (M), wobei sich die Litze hinsichtlich der Länge entlang einer Längsachse (X1) erstreckt und umfasst:
    - einen Litzenkörper (10; 1010; 2010; 3010), der mindestens einen Litzenstrang (4; 1004; 2004; 3004) aufweist, und
    - mindestens ein Litzenauge (2; 1002; 2002; 3002) mit mindestens einer Aufnahme (26, 28A, 28B; 1026; 2026, 2028; 3026) und einer Öse (22) für den Durchgang des Kettfadens, dadurch gekennzeichnet, dass:
    - der Litzenkörper (10; 1010; 2010; 3010) mindestens eine Aufnahme (46A, 46B, 46C; 1046; 2046; 3046) aufweist,
    - die Aufnahme (26, 28A, 28B; 1026; 2026, 2028; 3026) des Litzenauges (2; 1002; 2002; 3002) und die Aufnahme (46A, 46B, 46C; 1046; 2046; 3046) des Litzenkörpers (10; 1010; 2010, 3010) sich entlang einer selben Achse (Y1, Z1) quer zur Längsachse (X1) erstrecken,
    - die Aufnahme (46A, 46B, 46C; 1046; 2046; 3046) des Litzenkörpers (10; 1010; 2010, 3010) der Aufnahme (26, 28A, 28B; 1026; 2026, 2028; 3026) des Litzenauges (2; 1002; 2002; 3002) gegenüberliegt, wobei diese Aufnahmen zusammen ein Paar von Aufnahmen (31, 32, 33, 34, 35; 1003; 20031, 20032, 20033, 20034, 20035; 3003) bilden, und
    - ein Verbindungselement (61, 62, 63, 64, 65; 1006; 20061, 20062, 20063, 20064, 20065; 3006) aus verfestigtem Harz in dem Aufnahmepaar (31, 32, 33, 34, 35; 1003; 20031, 20032, 20033, 20034, 20035; 3003) angeordnet ist.
  2. Litze nach Anspruch 1, dadurch gekennzeichnet, dass das Verbindungselement (61, 62, 63, 64, 65; 1006; 20061, 20062, 20063, 20064; 3006) aus verfestigtem Harz ein Hindernis bildet, das den Litzenstrang (4; 1004; 2004; 3004) und das Litzenauge (2; 1002; 2002; 3002) entlang der Längsachse (X1) und entlang einer Achse (Z1, Y1) senkrecht zur Längsachse (X1) und zur Querachse (Y1, Z1) vereint.
  3. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Aufnahme (46A, 46B, 46C; 1046; 2046) des Litzenkörpers (10; 1010; 2010; 3010) und/oder die Aufnahme (26, 28A, 28B; 1026; 2026, 2028; 3026) des Litzenauges (2; 1002; 2002; 3002) den Litzenkörper oder das Litzenauge gemäß der Querachse (Y1, Z1) von einer Seite zur anderen durchgreifen.
  4. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Aufnahme des Litzenkörpers (10; 1010; 2010; 3010) und/oder die Aufnahme des Litzenauges (2; 1002; 2002; 3002) ein Loch (26, 46A, 46B, 46C; 1026, 1046; 2028; 3026) mit einem kreisförmigen, länglichen oder polygonalen Querschnitt sind.
  5. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine Aufnahme des Litzenauges (2; 2002) oder des Litzenkörpers (2010) eine an einem Rand des Litzenauges oder des Litzenkörpers vorgesehene Einkerbung (28A, 28B; 2026, 2046, 2047) ist.
  6. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Verbindungselement (61, 63, 20061, 20063) eines ersten Aufnahmepaares (31, 33, 20031, 20033) mit einem Verbindungselement (62, 64, 20062, 20064) eines zweiten Aufnahmepaares (32, 34, 20032, 20034) einstückig verbunden ist, das in Längsrichtung in Bezug auf das erste Aufnahmepaar versetzt ist.
  7. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Öse (22) das Litzenauge (2; 1002) entlang der Querachse (Z1) durchgreift und das Verbindungselement (61, 62, 63, 64, 65; 1006) einen Niet bildet, der aus einem sich entlang der Querachse (Z1) erstreckenden Harzkörper (6A; 1006A) und aus mindestens einem Harzkopfteil (6B; 1006B) besteht.
  8. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mindestens zwei Paare von Aufnahmen (31, 32, 33, 34, 35; 1003; 20031, 20032, 20033; 3003) aufweist, die entlang der Längsachse (X1) verteilt sind und jeweils ein Verbindungselement (61, 62, 63, 64, 65; 1006; 20061, 20062, 20063; 3006) aus verfestigtem Harz aufnehmen.
  9. Litze nach Anspruch 8, dadurch gekennzeichnet, dass alle Aufnahmepaare (31, 32, 33, 34, 35; 1003; 20031, 20032, 20033, 20034, 20035; 3003) der Litze (1; 1001; 2001; 3001) aus verfestigtem Harz auf einer gleichen Seite an der Außenseite der Litze münden.
  10. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Abschnitt (24; 2024; 3024A, 3024B) eines ersten Teils (2; 2010; 3002) unter dem Litzenkörper (10; 2010; 3010) und dem Litzenauge (2; 2002; 3002) in einem Aufnahmehohlraum (48; 2029; 3048) aufgenommen ist, der an dem zweiten Teil (10; 2002; 3010) unter dem Litzenkörper und dem Litzenauge vorgesehen ist, während mindestens eine Aufnahme (46A, 46B, 46C; 2026, 2028; 3046), die an dem zweiten Teil für ein Verbindungselement (61, 62, 63, 64; 20061, 20062, 20063; 3006) aus Harz vorgesehen ist, in den Aufnahmehohlraum (48; 2029; 3048) oder in einen Endabschnitt (52) mündet, der einen Boden (51) des Hohlraums in Richtung der Längsachse (X1) verlängert.
  11. Litze nach Anspruch 10, dadurch gekennzeichnet, dass der am zweiten Teil (10) vorgesehene Hohlraum (48) zur Aufnahme des Bereichs (24) des ersten Teils zwischen zwei Seitenwänden (49), einem Boden (51) und einer Oberseite (53) definiert ist.
  12. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zumindest der Litzenkörper (10; 1010; 2010; 3010) aus Kunststoff, vorzugsweise aus Polyamid, besteht.
  13. Litze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie einen Litzenkörper (10) mit zwei getrennten Litzensträngen (4) und ein Litzenauge (2) umfasst, dass ein Ende (44) jedes Litzenstrangs einen Aufnahmehohlraum (48, 48'), der mindestens zwischen zwei Seitenwänden (49) und einem Boden (51) definiert ist, sowie einen Endabschnitt (52) ohne Seitenwand umfasst, der den Boden in Richtung der Längsachse (X1) verlängert, wobei ein Bereich mit reduzierter Breite (24) des Litzenauges in jedem Hohlraum aufgenommen wird, dass ein Loch (46C), das durch den Endabschnitt (52) hindurchgeht, der den Boden (51) jedes Hohlraums verlängert, mindestens einer durchgehenden Aufnahme (26) gegenüberliegt, die an dem Litzenauge vorgesehen ist, um ein Paar von Aufnahmen (35) zur Aufnahme eines Verbindungselements (65) aus Harz zu bilden.
  14. Webmaschine (M) mit mehreren Litzen zur Führung eines Kettfadens, dadurch gekennzeichnet, dass mindestens eine Litze (1; 1001; 2001; 3001) nach einem der vorhergehenden Ansprüche ausgebildet ist.
  15. Verfahren zur Herstellung einer Führungslitze (1; 1001; 2001; 3001), die mindestens einen Litzenstrang (4; 1004; 2004; 3004) mit mindestens einer Aufnahme (46A, 46B, 46C; 1046; 2046, 2047; 3046) und ein Litzenauge (2; 1002; 2002; 3002) mit mindestens einer Aufnahme (26, 28A, 28B; 1026; 2026, 2028; 3026) umfasst, dadurch gekennzeichnet, dass das Verfahren mindestens die folgenden Schritte umfasst:
    a) Positionieren des Litzenauges in Bezug auf den Litzenstrang derart, dass die Aufnahmen (26, 28A, 28B; 1026, 2026, 2028; 3026) des Litzenauges den Aufnahmen (46A, 46B, 46C; 1046; 2046, 2047; 3048) des Litzenstrangs gegenüberliegen und mindestens ein Paar von Aufnahmen (31, 32, 33, 34, 35; 1003; 20031, 20032; 20033; 3003) bilden;
    b) Einbringen einer Menge an flüssigem Harz in das Aufnahmepaar;
    c) Aushärten des Harzes im Aufnahmepaar.
EP15189876.4A 2014-10-16 2015-10-15 Litze für webrahmen, mit einer solchen litze ausgestatteter webrahmen, und herstellungsverfahren einer solchen litze Active EP3009544B1 (de)

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FR1459958A FR3027313B1 (fr) 2014-10-16 2014-10-16 Lisse pour metier a tisser, metier a tisser equipe d'une telle lisse et procede de fabrication d'une telle lisse

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EP (1) EP3009544B1 (de)
JP (1) JP6682230B2 (de)
KR (1) KR102492285B1 (de)
CN (1) CN105525414B (de)
CA (1) CA2908451C (de)
FR (1) FR3027313B1 (de)

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FR3027314B1 (fr) * 2014-10-16 2019-04-26 Staubli Lyon Lisse pour metier a tisser et metier a tisser equipe 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
CN107841811B (zh) * 2017-10-26 2020-07-10 南通佳立禾机电有限公司 提刀
FR3105269B1 (fr) 2019-12-20 2021-12-31 Staubli Lyon Lisse pour métier à tisser et harnais équipé d’une telle lisse
KR20230050721A (ko) 2021-10-08 2023-04-17 김주완 김 서림 방지 온도조절 안경테
KR20230050674A (ko) 2021-10-08 2023-04-17 조영찬 안경닦이 일체형 안경

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FR3027313B1 (fr) 2016-11-18
EP3009544A1 (de) 2016-04-20
JP2016079549A (ja) 2016-05-16
CA2908451A1 (fr) 2016-04-16
US9745675B2 (en) 2017-08-29
FR3027313A1 (fr) 2016-04-22
CN105525414B (zh) 2019-08-16
CN105525414A (zh) 2016-04-27
CA2908451C (fr) 2022-09-20
KR20160045026A (ko) 2016-04-26
US20160108561A1 (en) 2016-04-21
JP6682230B2 (ja) 2020-04-15
KR102492285B1 (ko) 2023-01-26

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