EP3162933B1 - Shedding machine - Google Patents

Shedding machine Download PDF

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Publication number
EP3162933B1
EP3162933B1 EP16196179.2A EP16196179A EP3162933B1 EP 3162933 B1 EP3162933 B1 EP 3162933B1 EP 16196179 A EP16196179 A EP 16196179A EP 3162933 B1 EP3162933 B1 EP 3162933B1
Authority
EP
European Patent Office
Prior art keywords
lever
machine
spacer
spacers
longitudinal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16196179.2A
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German (de)
French (fr)
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EP3162933A1 (en
Inventor
David Bonneau
Joseph CITTADINI
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP3162933A1 publication Critical patent/EP3162933A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices

Definitions

  • the present invention relates to a machine for forming the crowd, dobby type or mechanical cam, for a loom.
  • Some crowd forming machines are of the mechanical cam type and include an input shaft and a camshaft driven by the input shaft. Each cam defines two conjugate tracks on which are respectively supported two rollers of an output lever.
  • Other crowd forming machines are dobby type and comprise a main shaft provided with eccentric actuating elements for driving the output levers in an oscillating motion under the action of rotation of the main shaft. .
  • the actuating elements are connected to the output levers by connecting rods.
  • the rotation of the main shaft is interrupted at each half-turn.
  • a dobby selection device secures the actuating element with the main shaft to control the movement of the output lever. corresponding, or with a fixed point in order to operate an angular immobilization of the output lever.
  • the various shafts, the levers and the various mechanical connections that connect them are supported by a frame of the machine and covered by a removable protective cover.
  • the extensions of the output levers extend through a recess of the cover to the outside of the machine.
  • EP-A-0 140 800 use of needle bearings, between the output levers and the common shaft, as well as axial stops, between two adjacent levers. These rolling joints must be lubricated to work correctly. Oil contained in the shedding machine may be used for this purpose, but leakage to the outside must be excluded, to avoid dirtying the fabric being manufactured on the craft. The high speed movement of the levers is likely to produce oil splashes.
  • the operating rods of the output levers are driven by a combined movement of rotation and translation at very high acceleration which also projects lubricating oil to the output levers.
  • the leveling of the levers also makes it more difficult to design effective sealing means.
  • EP-B-2 492 381 discloses a dobby that includes spacers separating the output levers. Each spacer is provided with a central passage opening of the common shaft, housing which surrounds the central orifice for receiving and maintaining the axial stops, and a housing for receiving a circular seal which surrounds the liner. central shaft and one of the axial stops. Each spacer also comprises a strip to cover the space between two adjacent spacers and thus limit the escape of lubricant. A layer of felt that extends in contact with all the levers is also provided to limit oil leakage between the spacers and a pad of the machine.
  • a shedding machine comprising a shaft, levers mounted on said shaft, a wall provided with a rectangular sealing barrier interposed between the wall and connecting rods connected to the levers via an axis.
  • the invention aims to remedy the various disadvantages mentioned above.
  • the subject of the invention is a machine for forming a crowd, of the dobby or mechanical cam type, for a loom, the machine comprising output levers which each comprise a first flank, a second flank, a first slice connecting the first flank to the second flank and a second slice opposite to the first slice and connecting the first flank to the second flank.
  • the machine also comprises a common shaft, on which are mounted the output levers and defining a longitudinal axis, means for driving the output levers in an alternating oscillation movement around the common shaft, an outer casing, which is traversed by the output levers, a frame which delimits, with the outer casing, an interior volume of the machine and at least a first interposed sealing barrier between the outer shell and a first lever among the output levers.
  • the first sealing barrier is in sealing contact with the first lever over the entire periphery of the first lever and comprises a first radial portion which is in sealing contact with one of the first wafer and the second wafer.
  • first lever a second radial portion which is in sealing contact with the second slice of the first lever, a first lateral portion which is in sealing contact with the first flank of the first lever and which is arranged in continuity with each of the two radial portions and a second lateral portion, which is in sealing contact with the second flank of the first lever, and which is arranged in the continuity of each of the two radial portions.
  • the first sealing barrier is housed in the outer casing which is fixed relative to the frame of the machine when the output levers are in alternating oscillation movement around the common shaft, the first radial portion of the first sealing barrier being in sealing contact with a curved surface of the first wafer and the second radial portion of the first sealing barrier being in sealing contact with a curved surface of the second wafer, each of the curved surfaces being sectioned; in the form of a circular arc coaxial with the longitudinal axis defined by the common shaft.
  • the sealing of the internal volume of the machine is ensured closer to the first output lever by the first sealing barrier.
  • This seal is continuous, especially between each lateral portion and each radial portion, to ensure the absence of leakage over the entire length of the barrier, even when the machine operates at high speed.
  • the continuous sealing barrier prevents splashes of oil from the interior of the machine.
  • the crowd forming machine 2 shown in FIGS. Figures 1 to 10 is of the mechanical cam type and comprises an input shaft 4, intended to be rotated by drive means of a not shown loom.
  • the input shaft 4 is supported by a frame 6 of the machine 2.
  • the latter also comprises a drive shaft 8 visible to the Figures 9 and 10 which is also supported by the frame 6 and is rotated, about its own axis X8 and with respect to the frame 6, by the input shaft 4.
  • the shaft 4 and the shaft 8 are perpendicular to each other and connected by transmission means not visible in the figures.
  • the machine 2 also comprises a cylindrical common shaft 10 whose own central axis X10 is parallel to the axis X8.
  • the frame 6 forms a lower support in the form of a tank.
  • the machine 2 also comprises a cover 12 which is removably mounted on the frame 6 so as to define therewith an internal volume V of the machine 2 in which the shafts 8 and 10 are mounted.
  • the cover 12 is thus disposed in the upper part of the machine 2 and has a lower edge 18 which is in contact with a corresponding upper edge 20 of the frame 6.
  • the input shaft 4 passes through the frame 2 from the outside of the machine to the inside of the volume V.
  • the machine 2 comprises lubricating means, for example an oil bath in the tank of the frame 6 feeding a oil circuit, mechanical elements disposed within the volume V, including the shafts 4, 8 and 10. Oil thus flows in the interior volume V.
  • a window 14 is formed through the cover 12 from the edge 18 and is delimited by two lateral edges 26 and an upper edge 27.
  • the edge 20 of the frame 6 is provided in the lower part of the window 14 of a lower profile 22 as illustrated in Figures 9 and 10 .
  • the lower profile 22 extends parallel to the axes X8 and X10.
  • An upper profile 24, in the upper part of the window 14, is fixed to the frame 6.
  • the profiles 22 and 24 are parallel to each other and connected to each other by the two side edges 26 of the window 14, also parallel to each other, so that the window 14 has a generally rectangular shape.
  • An assembly 30 of the machine 2 described in the following, is mounted within the window 14 to delimit the interior volume V.
  • a seal 16 is interposed between the edges 18 and 20, all along them, except along the lower profile 22 where the seal 16 is interrupted.
  • Another seal 28 extends the seal 16 along the edges 26 and the upper edge of the window 14. The seals 16 and 28 thus form a closed loop to ensure the seal between the cover 12 and the frame 6.
  • the cover 12 and the assembly 30 and form an outer casing of the machine 2, defining the volume V with the frame 6.
  • the machine 2 also comprises output levers 32 which are rotatably mounted on the common shaft 10, independently of each other, around the axis X10.
  • the levers 32 each extend in a plane P32 orthogonal to the axis X10.
  • eight levers 32 are mounted on the machine 2.
  • On the figure 3 only two of the levers 32 are shown.
  • the number of levers 32 mounted on the shaft 10 can be adapted according to the type of loom to which the machine 2 is integrated and the pattern of the fabric to be woven on this loom.
  • Each lever 32 comprises a plane body 34 which extends, for the most part, in the internal volume V and which is rotatably mounted on the shaft 10 by means of a bearing 36 visible to the figures 2 , 3 , 9 and 10 independently of the other levers 32.
  • a circular orifice 44 is formed through the body 34 orthogonally to the plane P32, within which the bearing 36 is mounted, so that the shaft 10 passes through the bearing 36 and lever 32.
  • the body 34 passes through the window 14 and the assembly 30 and is extended outside the machine 2 by an extension 38 of the lever 32.
  • the extensions 38 are connected to mechanical elements of the draw, not illustrated, to form the crowd on the craft.
  • Each lever 32 has a first flank 42 and a second flank 40 which extend in planes parallel to the plane P32 and orthogonal to the axis X10, at the body 34 and the extension 38, so as to define between them a thickness e32 of the lever 32, measured perpendicular to the plane P32 and visible at the figure 2 .
  • Flanks 40 and 42 are connected by a peripheral wafer perpendicular to plane P32 comprising on the one hand an upper wafer 46 of lever 32 and, on the other hand, a lower wafer 48 of lever 32, opposite upper wafer 46.
  • Each lever 32 is equipped with a pair of rollers 50 and 51, in this case upper rollers 50 and lower 51, which are each rotatable relative to the lever 32 in question, about a proper axis X 50 and X51 of the roller 50 and the roller 51 respectively, which extends parallel to the axis X10.
  • the two rollers 50, 51 are arranged at a distance from one another, the upper roller 50 being located above the lower roller 51 on the Figures 9 and 10 .
  • the wafer 46 extends from the top of the extension 38 to the upper roller 50 of the lever 32, mounted on the body 34.
  • the wafer 48 also extends from the top of the extension 38 to lower roller 51 of the lever 32, also mounted on the body 34.
  • the slices 46 and 48 extending in the direction of the thickness e32. A transverse section of the lever 32 is thus delimited by the slices 46 and 48 as well as by the flanks 40 and 42.
  • the levers 32 are arranged parallel to each other along the shaft 10 and separated by axial stops 54 with rolling elements, visible to the figures 2 and 3 , the rolling elements being for example balls or rollers.
  • Each axial abutment 54 is mounted astride two adjacent bearings 36, coaxially with the latter and the axis X10. Spaces of the same thickness e54, which is measured parallel to the thicknesses e32, are defined by the stops 54 and separate the levers 32 along the shaft 10, bearing against the bodies 34 of the levers 32.
  • Two of the stops 54 disposed at the ends of the shaft 10, are in plane support against only one of the flanks 40 or 42 of their respective adjacent lever 32, these two levers 32 constituting the two lateral levers of the lever group 32.
  • Each of the other stops 54 is interposed between the flank 40 of a first lever 32 and the flank 42 of a second lever 32 of the lever group 32.
  • the levers 32 which are interposed between two stops 54 constitute intermediate levers of the lever group 32.
  • the bearings 36 and the stops 54 benefit from the lubrication performed within the volume V.
  • the drive shaft 8 is provided with a series of cams 52, the cams 52 are integral in rotation with the shaft 8, each cam being associated with a lever 32 and in particular with the pair of rollers 50, 51 of the lever in question.
  • the machine 2 is designed to operate in a weaving configuration illustrated in FIG. figure 9 in which the shaft 8 drives each of the levers 32 in oscillation around the shaft 10 in the plane P32 associated through the cams 52 on which the rollers 50, 51 roll.
  • the levers 32 are actuated in oscillation in a predetermined sequence.
  • the shafts 4 and 8 as well as the cam system 52 form a drive means of the levers 32 via the rollers 50 and 51 in an alternating oscillation movement around the shaft 10.
  • Other means of These drive means can be implemented in place of this drive means 4, 8, 52.
  • the shaft 10 is connected, in rotation around its axis X10, the frame 8 and is therefore immobile when the levers 32 oscillate.
  • each of the levers 32 has a curved surface 56 with a circular arc-shaped section coaxial with the axis X10 of the common shaft 10, so that the upper edge 46 is locally circular, as seen in FIG. P32 plane, at the body 34, between the roller 50, which is greater and adjacent to the wafer 46, and the extension 38.
  • the lower wafer 48 comprises a curved surface 58 with shaped section arc of a circle coaxial with the axis X10, so that the lower edge 48 is locally circular, seen in the plane P32, at the body 34, between the roller 51, which is lower and adjacent to the edge 48, and extension 38.
  • the slices 46 and 48 have curved portions 60 which extend parallel to each other.
  • the machine 2 is designed to move between the weave pattern in which the shaft 10 is in a weaving position shown in FIG. figure 9 and a leveling configuration shown in the figure 10 , in which the shaft 10 is moved away from the shaft 8, transversely to the longitudinal axis X10, towards the top of the machine 2 to a leveling position, remaining parallel to the shaft 8
  • the machine 2 comprises a leveling system, not shown, able to impart such a displacement to the shaft 10.
  • the levers 32 are thus raised, so that the contact between the rollers 50 and 51 and the cams 52 is interrupted. In the leveling configuration, the levers 32 are then decoupled from the drive means.
  • the leveling system includes a means for abutting the levers 32 so that the latter adopt a common predetermined orientation about the X10 axis in leveling configuration and that their oscillation is interrupted.
  • the levers 32 are aligned around the shaft 10 in the leveling configuration.
  • the assembly 30 housed within the window 14 comprises, along the axis X10, a stack of spacers 62, 64, 66 and 68 of different types, bordered by two side plates 70 of the assembly 30.
  • Each plates 70 is itself bordered by a support plate 72, opposite the spacers 62, 64, 66, 68.
  • the spacers 62, 64, 66 and 68 and the plates 70 and 72 each extend in a plane parallel to the planes P32 of the levers 32.
  • the struts 62, 64, 66 and 68 are juxtaposed.
  • a set of screws 74 passes through the plates 70 and the frame 6, so that the latter form a fixed assembly removably mounted on the frame 6.
  • the plates 70 are each provided with a lifting ring 76 which is extends into the extension plane of the plate 70 and protrudes upwardly outside the machine 2 when the plate 70 is mounted within the window 14.
  • Each support plate 72 comprises an upper edge 82 of complementary shape with that of the lateral edge 26 of the window 14, so that the edge 82 is in sealing contact against the seal 28 along the length of the edge 26.
  • Each side plate 70 receives axially, that is to say parallel to the axis X10, at least one spacer 68, called “fixed”, opposite the support plate 72.
  • Each fixed spacer 68 and each plate 70 and 72 are shaped to interpose between the outside of the machine 2 and the shaft 10.
  • Each spacer 68 comprises a main body 90 which extends in a plane parallel to the planes P32.
  • the main body 90 ends with an upper end 88 and a fixing hook 80 at the lower end opposite the upper end.
  • Each spacer 68 is attached to a bead 166 of the lower profile 22 of the frame 6 via the hook 80 and comprises two overlapping flanges 86 and 87 which protrude from the main body 90 perpendicularly to the planes P32 from the upper end 88 to the lower end of the spacer 68.
  • the bead 166 projects towards the interior of the window 14 and is visible at Figures 9 and 10 .
  • the flanges 86 and 87 extend from the hook 80 to the upper end 88, parallel to the axis X10.
  • the flange 86 follows an upper edge of the spacer 68, while the flange 87 extends away from the flange 86 on a lower edge 84 of the spacer 68, located in the vicinity of the shaft 10.
  • An inner flange 92 protrudes from the body 90 in a direction opposite to that of the flanges 86 and 87. As illustrated in FIG. figure 2 , the inner flange 92 follows the edge of the spacer 68 from the upper end 88 to the lower end of the spacer 68 and is shaped to be overlapped by the flange 87 of an adjacent spacer 68 or flange a lateral lever spacer 62 or 66 adjacent. A sealing chamber C68 is thus formed between the flanges 87, 86 and 92.
  • the adjacent struts 68 are thus partially overlapped longitudinally along the axis X10 so as to form a sealed cover within the window 14. the case where the spacer 68 is disposed laterally in abutment against the plate 70, it is via the edges 87 and 86 resting against the plate 70 that the seal is also provided between the plate 70 and the spacer 68.
  • each spacer 68 bypasses the shaft 10. This edge 84 is sufficiently remote from the shaft 10 to allow the displacement of the shaft 10 between the leveling position and the weaving position.
  • the spacers 68 disposed at one end of the assembly 30 have the same characteristics as the spacers 68 disposed at the other end of the assembly 30, but are symmetrical in shape, as illustrated in FIGS. figures 2 and 3 .
  • a spacer 68 is systematically mounted at each end of the stack of spacers, additional spacers 68 being put in place in place of missing levers on the shaft 10.
  • the additional spacers 68 are called "empty blades”.
  • the spacers 62, 64 and 66 are disposed between two of the spacers 68 and are called “lever spacers”.
  • the lever spacers 62, 64 and 66 form a subassembly which, with the output levers 32, is bordered on one side by at least one of the fixed spacers 68, and on the other side by another spacer fixed 68, along the common shaft 10.
  • the lever spacers 62, 64 and 66 include a left side spacer 62 shown alone at figure 5 , a right lateral strut 66 and one or more intermediate struts 64, one of which is illustrated in FIG. figure 6 .
  • the intermediate struts 64 are all arranged between the two lateral struts 62 and 66 along the shaft 10.
  • Each intermediate strut 64 is interposed between two of the output levers 32, while each of the lateral struts 62 and 66 is arranged against only one of the output levers 32, in this case the lateral levers.
  • the number of intermediate struts 64 depends on the number of levers 32. In fact, the intermediate struts 64 are N-1 in number if N is the number of levers 32. Thus, in the example of the figures, the machine 2 comprises seven intermediate struts 64. At the figure 3 , which is a partial view, only two levers 32 and the only intermediate spacer 64, interposed between these two levers, are shown for clarity of the drawing.
  • the lever spacers 62 and 64 are mounted on the common shaft 10 and shown separately at Figures 5 and 6 .
  • the spacer 66 is also mounted around the shaft 10.
  • Each of the spacers 62, 64 and 66 comprises a main body 94 which extends in a plane parallel to the planes P32 when the spacer in question is mounted on the shaft 10.
  • the main body 94 is crossed, perpendicular to its plane extension, through a through opening 96 through the shaft 10, circular shape centered on the axis X10.
  • Each lever spacer 62, 64 or 66 is mounted through its opening 96 around one of the stops 54, the stop 54 being centrally housed in the opening 96 in the direction of the axis X10, as illustrated in figure 2 .
  • lever struts 62, 64 and 66 are arranged one after the other along the shaft 10 adjacent the levers 32, each lever 32 being interposed between two adjacent lever struts.
  • a first lever spacer 62 or 64 and a second spacer 64 or 66 are arranged on either side of each lever 32.
  • each lever spacer 62, 64 and 66 has a first face 110 and a second face 112 opposite the first face 110, the faces 110 and 112 are perpendicular to the axis X10 and all the faces 110 and 112 respectively.
  • spacers 62, 64, 66 of the assembly 30 are oriented in the same direction along the axis X10.
  • a circular seal 97 for example an O-ring, is preferably provided around the opening 96 on the first face 110 and / or on the second face 112, as illustrated in FIG. figure 2 , so that the contact between the adjacent lever 32 and the face 110 or 112 concerned is tight around and in the vicinity of the shaft 10.
  • a circular housing 99 is provided on the face 110 or 112 concerned to receive this. attached as shown in Figures 5 and 6 .
  • the reinforcing washers 103 are rigid, with a thickness of about 2 to 3 mm, and with an outside diameter greater than the outside diameter of the axial stops 54.
  • Each washer 103 is housed in a housing formed in the housing. lateral spacer 62 or 66 adjacent, coaxially with the opening 96.
  • this housing is formed by a cylindrical wall 113 which projects from the face 110 of the spacer 62 and the face 112 of the spacer 66 , respectively, and which is coaxial with the opening 96.
  • the washer 103 thus stiffens the struts 62 and 66, and thus the stack of struts 62, 64 and 66.
  • connection means by screwing or interlocking can be implemented, for example connection means by screwing or interlocking.
  • the height of the rims, measured parallel to the axis X10, of the elements 102, 104, 106 and 108 makes it possible, after overlapping in a stacked configuration of two consecutive lever spacers in the upper and lower parts, to delimit an interstitial axial space between the bodies 94 of two consecutive spacers, so that the second face 112 of the first of the two bodies 94 is located at a distance from the first face 110 the second of the two bodies 94 which is greater than the thickness e32 of the lever 32 disposed between these two faces.
  • the elements 102 and 104 are respectively arranged back to back with the elements 106 and 108.
  • an opening edge 114 projects from the first face 110 and connects the two members 102 and 104 together.
  • the edge 114 is recessed axially, along the axis X10, relative to the elements 102 and 104, which are therefore more prominent than the latter.
  • an opening edge 116 similar in profile to the edge 114, projects from the second face 112 and connects the two elements 106 and 108 between them.
  • the edge 116 is axially recessed, along the axis X10, relative to the elements 106 and 108, which are therefore more salient than the latter.
  • edges 114 and 116 are therefore spaced from each other with a spacing measured parallel to the axis X10 greater than the thickness e32.
  • the levers 32 can thus be freely moved between two lever spacers 62, 64 and 66 consecutive.
  • the opening edges 114 and 116 extend between the shaft X10 and the external volume V in the mounted configuration of the spacers on the shaft 10, and have a curved profile, included in a plane orthogonal to the axis X10. curved profile being curved towards the outside of the machine 2 so as to bypass the opening 96.
  • the edge 114 defines with the elements 102 and 104 a half-opening right through the spacer 64, 66.
  • the edge 116 delimits with the elements 106 and 108 a left half-opening through the spacer 64, 62.
  • the struts 62, 64 and 66 overlap in pairs along the axis X10 by interlocking and partial overlapping along the X10 axis of the elements 102, 104, 106 and 108 to define the openings 118.
  • Each lever 32, and in particular its body 34 passes through only one of the openings 118, so that each opening 118 receives a single lever 32 In this case, the body 34 passes between the positioning elements 102, 104, 106, 108 and between the edges 114 and 116.
  • a sealing barrier 120 is mounted within the opening 118 to define an inner contour C of the opening 118 along which the barrier 120 is in sealing contact with the lever 32.
  • the sealing barrier 120 is interposed between the assembly 30 the outer casing of the machine 2 and the lever 32.
  • This inner contour C surrounds a single lever 32 and marries the periphery of the latter.
  • the element 104, 108 is placed facing the wafer 46, the element 102, 106 opposite the wafer 48, the edge 114 facing the flank 42 and the edge 116 opposite the flank 40 of the lever, at a play distance.
  • the clearance distance provided between the positioning element 104 and the wafer 46, as well as between the positioning element 102 and the wafer 48, is kept constant despite the oscillation of the lever 32 around of the axis X10, thanks to the arcuate shape coaxial with the axis X10 of the curved surfaces 56 and 58 respectively positioned at the height of the elements 104 and 102.
  • Each opening 118 is bordered by the sealing barrier 120 which is in sealing contact with the lever 32 which passes through the opening 118 in question.
  • Each barrier 120 is in sealing contact with a single outlet lever 32 for better adaptation of the barrier 120 to the outer contour of this lever 32.
  • the set of sealing barriers 120 prevents any leakage of lubricant from the interior volume V to the door. outside the machine 2 through the openings 118 and is housed in the subassembly formed by the spacers 62, 64 and 66, which constitutes a part of the outer casing of the machine 2.
  • Each barrier 120 preferably comprises two seals 124 and 122 shown separately in FIGS. Figures 7 and 8 , which simplifies the establishment of the barrier 120 in contact with the lever 32 during assembly of the lever 32 on the shaft 10 and simplifies the production of the barrier 120.
  • the parts 124 and 122 are separate and reported one on the other to form the barrier 120.
  • the parts 124 and 122 are formed of two separate seals, preferably elastomer.
  • the first part 122 of each barrier 120 is provided on the surface of the first face 110 of a spacer 64 or 66, as visible in FIG. figure 4 .
  • each barrier 120 is mounted in a housing 128 formed in the first face 110, the housing 128 forming a groove extending from the element 102 to the element 104, along the opening edge 114.
  • the second portion 124 of each barrier 120 is, for its part, provided on the surface of the second face 112 of a spacer 62 or 64, being mounted in a housing 126 formed in the second face 112, the housing 126 forming a groove extending from the element 106 to the element 108, along the opening edge 116.
  • Each spacer 64 houses a first portion 122 of one of the barriers 120 and a second part 124 of another of the barriers 120.
  • Each barrier 120 is partially housed in the one and the other spacer 64 which are disposed on either side of the lever 32 with which the barrier 120 is in contact.
  • the spacer 62 thus houses the second part 122 of one of the barriers 120.
  • the spacer 66 thus houses the first portion 124 of one of the barriers 120.
  • the first portion 122 comprises a first lateral portion 130 which is intended to be in sealing contact with the flank 42 of the lever 32 via three lips 134A of the barrier 120 which extend all along the portion 130.
  • the second part 124 illustrated in figure 7 comprises a second lateral portion 132 which is intended to be in sealing contact with the flank 40 of the same lever 32 via three lips 134B of the barrier 120 which extend all along the portion 132.
  • the first lateral portion 130 extends along the housing 128 within the latter, follows the curvature of the edge 114 and continues with an upper radial portion 142, integral with the first lateral portion 130, which projects from the first face 110 towards the spacer 62 or 64 adjacent.
  • the upper radial portion 142 extends along the element 104, at an upper end 147 of the portion 130, and is housed within a notch 145 of the element 104.
  • Four lips 140A extend along of the upper radial portion 142, three of these lips 140A continuously extending the three lips 134A.
  • the upper radial portion 142 is in sealing contact with the upper edge 46 of the lever 32 via the lips 140A.
  • the radial portion 142 connects the lateral portion 130 of the barrier 120 to the lateral portion 132 of the barrier 120 at their upper ends.
  • the second lateral portion 132 thus has a substantially plane profile parallel to the plane P32, that is to say that the lateral portion 132 extends in a plane and follows the curvature of the edge 116.
  • the second lateral portion 132 comprises one end upper 148 which is in contact in the axial direction with the upper radial portion 142 of the first lateral portion 130 and a lower end 146.
  • the radial portion 142 is disposed in the continuity of the lateral portion 130 and in the continuity of the lateral portion 132.
  • the barrier 120 is continuous and in sealing contact with the lever 32 surrounded by two lever spacers, from the lateral portion. 130 to the radial portion 142 and the radial portion 142 to the lateral portion 132, continuously through the lips 134A, 140A and 134B which are arranged in continuity with each other in contact with the lever 32.
  • Barrier 120 forms at least one inverted continuous U which extends around the lever 32, and in particular around the upper edge 46. The barrier 120 prevents any leakage of lubricant from the interior volume V towards the outside, between the together 30 and the lever 32, on the continuous extent of the sealing barrier 120.
  • the lateral portion 130, 132 covers only a fraction of the length of the opening edge 114 or 116 associated with the opening 118.
  • the lateral portion 130 continues, at another end 145, by a lower radial portion 136, integral with the lateral portion 130, which projects from the face 110 in the direction of the spacer 62 or 64 adjacent.
  • the lower radial portion 136 is housed in a notch 143 of the element 102 and comprises four lips 140B, three of which extend the lips 134A without discontinuity.
  • the lower radial portion 136 is in sealing contact with the lower edge 48 via the lips 140B.
  • a lower end 146 of the second lateral portion 132 is in contact in the axial direction with the lower radial portion 136 of the first lateral portion 130 with the lips 134B which continuously extend three lips 140B.
  • the barrier 120 is also in continuous sealing contact along the lower edge 48 of the lever 32 with the lower radial portion 136 which is arranged in the continuity of the first lateral portion 130 and with the lower radial portion 136 which is disposed in the continuity of the second lateral portion 132, so that the barrier 120 is continuous and in continuous sealing contact over the entire periphery of a section of the lever 32 delimited by the slices 46, 48 and the flanks 40 and 42 through the lips 134A, 140A, 134B and 140B which are arranged in continuity with each other along the periphery of the lever 32.
  • the lateral portion 130 and the lower radial portion 136 are arranged in continuity with one another as well as the lower radial and lateral 136 and 132 portions, so as to form a barrier 120, forming a continuous O, or at least one continuous U in contact with the lever 32, which extends around the lever 32, in particular around the lower edge 48 of the lever.
  • the reinforcement washers 103 ensure that the adjacent struts 62, 64, 66 bear against each other, in the axial direction, through the barrier 120 and the lever 32 which are interposed between the two spacers. concerned, so that the barrier 120 is itself sealed against the flanks 40 and 42 of the lever 32 that it surrounds these two spacers and against the two spacers concerned, which ensures sealing.
  • the barrier 120 When the barrier 120 is in sealing contact over an entire periphery of the lever 32 during the oscillation of the lever 32, it ensures no leakage at the entire opening 118 traversed by the lever 32.
  • the at least two juxtaposed lips 134A, 134B, 140A, 140B on each portion of the barrier 120 ensure a contact of the barrier 120 with the lever 32 even if it deforms during weaving.
  • the curved surfaces 56 and 58 by their circular shape centered on the axis X10, ensure a maintenance of the sealed contact between the lever 32 and the radial portions 136 and 142, whatever the position of a lever 32 around of the X10 axis in weaving configuration.
  • each seal 122 and 124 has only one lip, the lip of the first seal being disposed in continuity with the lip carried by the second seal.
  • the second portion 124 of the barrier 120 is provided with radial portions similar to the upper and lower radial portions 142 and 136, in sealing contact with the upper edge 46, respectively the lower edge 48, for connecting the first lateral portion 130 to the second lateral portion 132.
  • the first portion 122 may be devoid of radial portions 136 and 142 if the second portion 124 is provided.
  • the lateral portion 130, the lateral portion 132, the radial portion 136 and / or the radial portion 147 are arranged two by two in continuity with each other so that the barrier 120 is continuous, and is in contact with the lever 32 continuously from the first sidewall 42 towards the second sidewall 40, via at least one edge 46 and / or 48 of the lever 32.
  • the barrier 120 further comprises an upper pin 152 which protrudes from the upper end 148 of the second portion 124 in an axial direction parallel to the axis X10 and which is housed in a notch 138 of the element 108 of the
  • the lower end 146 includes a lower pin 150 which projects from the lateral portion 132 in the same direction as the upper pin 152, that is to say, away of the face 112.
  • the lower end 146 is housed in a notch 144 formed in the element 106.
  • the first part 122 is provided with an upper cavity 156 for receiving the lug 152, the upper axial cavity 156 having a shape complementary to this lug 152 and being provided in the upper radial portion 142.
  • a lower axial cavity 154 receiving the lower lug 150 is provided within the lower radial portion 136.
  • the lower cavity 154 has a shape complementary to that of the lower lug 150.
  • the lugs 150 and 152 thus form male means that can be put in place. respectively in the axial cavities 154 and 156, which form female means.
  • These male and female means constitute means for interlocking the first portion 122 with the second portion 124 of the barrier 120 when the two adjacent struts 62, 64, 66 carrying the portions 122 and 124 of the same barrier 120 are assembled. with each other in the axial direction X10.
  • the lug 152 and the cavity 156 constitute a first interlocking means, while the lug 150 and the cavity 154 form a second interlocking means.
  • the parts 122 and 124 of the barrier 120 are connected by means of their connecting means, by bringing the parts 122 and 124 in the axial direction, the two parts 122 and 124 of the barrier 120 are in continuity with each other. one of the other, which occurs when two adjacent struts 62, 64 and 66 are assembled with each other, by means of their clipping means 98, 100 or interlocking means 102, 104, 106, 108.
  • the lugs and cavities described above can be reversed.
  • the first portion 122 may be provided with an upper lug and a lower cavity respectively corresponding to an upper cavity and a lower lug of the second portion 124. It is understood that other combinations of lugs and cavities are possible.
  • Each portion 122 and 124 is in sealing contact respectively with the lever spacer 62, 64 or 66 which houses it, at the housings 143, 128, 145, respectively housing 138, 126, 144.
  • the barrier 120 may be formed in one single piece which includes the two parts 122 and 124 described above.
  • the barrier 120 may be formed by four distinct connected parts, formed by the portions 130, 132, 136 and 142, which are then connected by connection means, for example including lugs and cavities as defined above and ensure the continuity of the contact of the barrier 120 against the lever 32.
  • connection means for example including lugs and cavities as defined above and ensure the continuity of the contact of the barrier 120 against the lever 32.
  • the barrier 120 may be provided integral with the lever 32 and sliding against the opening 118.
  • the barrier 120 is preferably made of elastomer. However, it can be formed by a sealing braid of metal or any other suitable material.
  • the lever spacers 62, 64 and 66 are each provided with an end tab 158 which extends the element 104 and / or the element 108 away from the axis X10.
  • the end flap 158 terminates in a flange 160 with a circular base portion of a cylinder, this cylinder extending along an axis parallel to the axis X10.
  • Each lever spacer 62, 64 and 66 is supported in a groove 162 of the upper profile 24, this groove 162 extending parallel to the axis X10 and being open towards the inside of the window 14.
  • a seal sealing not shown is optionally provided within the groove 162.
  • the shape of the bead 160 of the lug 158 allows the displacement of the lever spacer 62, 64 or 66 within the groove 162, and a change of orientation of this spacer about an axis X160 of the bead 160 relative to the upper profile 24 and therefore relative to the frame 6.
  • the axis X160 is parallel to the axis X10. Since the shaft 10 is designed to move between a distinct weaving position and a leveling position, the lever spacers 62, 64 and 66 are also moved between a weaving position and a leveling position, the end tab 158 allowing the displacement of the spacer concerned between this weaving position and this leveling position while remaining housed and supported in the groove 162, as illustrated in FIGS. Figures 9 and 10 .
  • the portion of the outer shell formed by the lever spacers 62, 64 and 66 is thus movable relative to the frame 6 between the weave pattern and the leveling pattern.
  • the first face 110 of the left lateral spacer 62 slides along the main body 90 of the fixed spacer 68 which is adjacent to it, while the second face 112 of the right lateral spacer 66 slides along the main body 90 of the fixed spacer 68 adjacent thereto. This ensures the tightness of the interior volume V of the machine 2 also in the leveling configuration.
  • the lever spacers 62, 64 and 66 each include a lower sliding surface 164 which extends perpendicular to the body 94 and parallel to the axis X10.
  • the sliding surface 164 is preferably formed by a part of the element 102 or 106 of the spacer concerned.
  • the sliding surface 164 is preferably curved so as to slide against the bead 166 of the lower profile 22, between the configurations of the Figures 9 and 10 .
  • the surface 164 is circular.
  • the bead 166 is optionally provided with a seal of the contact with the spacers 62, 64, 66 and 68, which extends parallel to the axis X10.
  • the lever spacers 62, 64 and 66 are each supported on the lower profile 22 by a heel 168 which extends the lower sliding surface 164, and is formed either by the element 102 or by the element 106.
  • the heel 168 is detached from the bead 166 in the leveling position as illustrated in FIG. figure 10 .
  • the lower sliding surface 164 remains in contact with the bead 166 so that no passage for the oil is possible between the lower profile 22 and the spacers
  • the upper radial portion 142 of the barrier 120, and / or the lower radial portion 136 remain in sealing contact with the lever 32 and the lateral portions 130 and 132 remain in position.
  • the lateral struts 62 and 66 each comprise a covering flange 89 which protrudes from their respective main body 94 and which extends parallel to the common shaft 10, above the opening edge 114 or 116 and away from the opening 96.
  • the rim 89 of the left lateral strut 62 protrudes from the first face 110
  • the rim 89 of the right lateral strut 66 protrudes from the second face 112.
  • each of the lateral struts 62 and 66 extends all along the lateral strut 62, 66 from the upper part to the lower part of the lateral strut 62, 66 and extends in the axial direction X10 to the adjacent fixed spacer 68 to cover the inner flange 92 of the latter, in the weaving configuration.
  • the flange 89 is disposed outside the internal rim 92, that is to say opposite to the internal volume V with respect to the internal rim 92.
  • the flanges 89 are moved away from the associated inner flange 92.
  • the flanges 89 return to overlap the flanges 92.
  • all the adjacent struts 62, 64, 66 and 68 of the machine 2 overlap in pairs along the axis X10 at less at the top and bottom of the spacers, in the manner of scales, with the levers 32 at the openings 118 sealed by the barriers 120, so that the assembly 30 forms a modular cover.
  • the flanges 86 of the struts 68, the flanges 102, 104, 106, 108 of the struts 62, 64, 66, the cover flanges 89 of the struts 62, 66, the side plates 70 delimit a subset of the outer envelope of the machine 2 at the window 14. Only the openings 118 allow the passage of an internal element of the machine, in this case the levers 32, towards the outside of the machine 2 within the window 14.
  • All the barriers 120 are thus housed in a subset of the outer casing which is formed by the spacers 62, 64 and 66 and which is fixed relative to the frame 6 when the cam machine 2 is in the weaving configuration. and when the output levers 32 are in alternating oscillation movement about the common shaft 10, and which is moved to a leveling position in the leveling configuration.
  • the description that is made of the barrier 120, as well as the opening 118 applies preferably to all the levers 32 of the machine 2. However, as a variant, only one or some of the openings 118 and one or some of the barriers 120 described above can be put in place on the machine 2, the other levers 32 being equipped with different sealing means.
  • Each lever spacer 62, 64 and 66 is preferably obtained by plastic injection, including the housing 143, 128, 145, or respectively 138, 126, 144, formed during the injection.
  • each seal 122 and 124 of the sealing barrier 120 is made by molding and then returned to the housings 143, 128, 145, respectively 138, 126, 144.
  • each seal 122 and 124 is overmolded by being engaged in the housing 143, 128, 145, or 138, 126, 144, of the spacer 62, 64 or 66 concerned.
  • Each spacer 62, 64 or 66, and the joint (s) with which it is associated then forms an assembly, preferably inseparable, which has substantially the same geometries as the spacer and the joint (s) (s) reported obtained in the first mode of manufacture.
  • the spacer 62, 64 or 66 remains at play clearance of the lever or levers 32 adjacent while the overmolded seal 122 or 124 is in contact with the lever 32.
  • Each overmolded seal has either lugs 150, 152 or cavities 154, 156. The seals are not intended to be disassembled, or even are not removable, but remain identifiable with respect to to the spacers 62, 64 and 66, differing from the latter by a different material.
  • FIGS. figures 11 and 12 A dobby type machine 1002 is illustrated in FIGS. figures 11 and 12 and constitutes a second embodiment according to the invention. Similar elements between the machine 1002 and the machine 2 are referenced on the figures 11 and 12 with the same reference numbers as in the Figures 1 to 10 , increased by 1000.
  • the machine 1002 thus comprises output levers 1032 with a first sidewall 1042 and a second sidewall 1040 and a lower edge 1048 and an upper edge 1046.
  • the machine 1002 also comprises a common shaft 1010 on which the levers 1032 are mounted.
  • the machine 1002 also comprises means for driving the levers 1032 in an alternating oscillation movement around the common shaft 1010.
  • these drive means include each lever 1032 of the actuating elements 1170 which are mounted on a main shaft 1172 connected to a not shown input shaft.
  • the actuating elements 1170 drives the lever 1032 in oscillation, by means of 1174.
  • Each connecting rod 1174 drives one of the levers 1032 via a pivot connection 1176 on the body 1034, whose axis X1176 is parallel to the central axis X1010 of the shaft. 1010.
  • the actuating elements 1170, the main shaft 1172 and the rods 1174 form drive means of the levers 1032.
  • the drive means of the levers 1032, the main shaft 1172 and the common shaft 1010 are arranged in an interior volume V of the machine 1002 defined by a frame 1006 and an outer envelope 1030 comprising a cover 1012 with a window 1014 through which the levers 1032.
  • the machine 1002 also comprises lever spacers 1064 which are all identical to each other and are mounted next to each other along the longitudinal axis X1010 of the shaft 1010 in the window 1014. Each spacer 1064 is traversed by a opening 1096 through which it is mounted around an axial stop 1054 itself mounted around the shaft 1010. Interlocking connection elements 1102 and 1104 allow the interlocking along the axis X1010 with interlocking connecting members 1106, 1108 adjacent struts 1064 for overlap along the X1010 axis at the top of the struts 68 and positioning the struts 1064 therebetween.
  • each spacer 1064 has two lower heels 1065 and 1067 for resting on the frame 1006.
  • the adjacent struts 1064 rest on the frame 1006 via their heels 1065 and 1067, which are respectively based on support members 1006A and 1006B of the frame 1006.
  • the elements 1102 and 1106 protrude axially from the two heels 1065 and 1067, on either side of the latter.
  • the spacers 1064, axial stops 1054 and levers 1032 are stacked on the common shaft 1010 and held axially between two unrepresented axial fastening means.
  • the heel 1065, the heel 1067 and the elements 1102 and 1106 which project from them form a lower projecting part of the spacer 1064, which is at the same time resting on the frame 1006 and overlapping along the frame.
  • Each spacer 1064 also has two opening edges 1114 and 1116, the edges 1114 and 1116 delimiting a main body 1090 between the means 1102 and 1104, respectively 1106 and 1108.
  • the edges 1116 and 1114 respectively project opposite faces 1110 and 1112. of each spacer 1064.
  • the edges 1114 and 1116 are interposed between the shaft 1010 and the outside of the machine 1002.
  • Each spacer 1064 also comprises a recess 1178 allowing the free movement of the connecting rod 1174 associated with each lever 1032.
  • the spacers 1064 thus each form two half-openings defined by, respectively, the opening edge 1114, the element 1104 and the element 1102, and by the edge 1116, the element 1106 and the element 1108. Like this is visible at the figure 11 , the two half-openings form an opening 1118 by bearing a spacer 1064 against its adjacent spacer 1064. The opening 1118 thus extends around one of the levers 1032, each lever 1032 thus passing through the envelope The exterior of the machine 1002 through one of the openings 1118.
  • a two-part sealing barrier 1120 1122 and 1124 is in sealing contact with the spacers 1064 surrounding the lever 1032 and the lever 1032 within the opening 1118.
  • Parts 1124 and 1122 are formed of two separate seals, preferably of elastomer. Each spacer 1064 arranged longitudinally between two levers 1032 thus receives a first portion 1122 and a second portion 1124 of two different barriers 1120, on each face 1110 and 1112 opposite.
  • the first portion 1122 has a lateral portion 1130 and two lower radial portions 1188 and 1186.
  • the second portion 1124 has a lateral portion 1132.
  • the portion 1122 housed in a first spacer 1064 is connected to a second portion 1124 housed in a second spacer 1064 adjacent to form a sealing barrier 1120.
  • the portion 1122 is provided with an upper axial cavity 1156 formed at the radial portion which cooperates with an upper lug 1152 of the portion 1124 which extends in the direction X1010 at the upper end of the side portion 1132 to connect the two parts together.
  • the portion 1122 also comprises a lower axial cavity 1154 formed at the radial portion 1188 which connects to a lower notch not visible in the figures of the portion 1124 formed at the lower end of the lateral portion 1132.
  • the lugs 1152 and the cavities 1154 and 1156 thus form means for connecting the two parts 1122 and 1124 of the same barrier 1120 by interlocking in the axial direction X1010.
  • the parts 1122 and 1124 of the barriers 1120 are nested.
  • Each of the radial portions of the first portion 1122 is then arranged in the continuity of the lateral portion 1132 and the lateral portion 1130 of the same sealing barrier 1120.
  • the lateral portions 1130 and 1132 are in sealing contact with the sidewall 1040, respectively with the flank 1042 and the radial portions 1186 and 1188 are in sealing contact with the upper edge 1046 of each of the levers 1032, respectively the lower edge 1048 at a curved surface 1056, respectively a curved surface 1058, with a cross section. arcuate shape coaxial with the axis X10 of the common shaft 1010.
  • the sealing barrier 1120 slides while remaining in sealing contact all around the lever 1132 during the oscillation of the lever 1132 around the X1010 axis.
  • the lateral portions 1130, 1132 are provided with a plurality of lips 1134 and the radial portions 1186 and 1188 are respectively provided with a plurality of lips 1140A and 1140B, respectively arranged parallel to one another and by means of which each portion of the barrier 1120 is in contact with the lever 1032.
  • the two parts 1122 and 1124 are arranged in the continuity of one another, at least one lip 1134 is extended by at least one lip 1140 without discontinuity.
  • the sealing barrier 1120 is continuous and in continuous sealing contact over the entire periphery of a section of the lever 1032.
  • the two upper radial portions of the two barriers 1120 of the machine 1002 cooperate with each other by similar connecting means, which pass longitudinally through the body 1090 of the spacer 1064 interposed between the two barriers 1120 concerned.
  • the portion 1122 mounted on the spacer 1064 comprises an upper pin 1180 which is fitted into an upper cavity 1182 of the portion 1124 mounted on the same spacer 1064.
  • the two parts 1122 and 1124 of the two adjacent barriers 1120 of the machine 1002 cooperate with each other thanks to a lower lug 1184 of the part 1122 which is fitted into a lower cavity which is not visible in the figures of the part 1124 mounted on the same spacer.
  • the sealed barrier of the machine 1002 thus comprises means for connecting the barriers 1120 to each other in the axial direction X10, which makes it possible to limit the space requirement of the spacers around the barriers 1120.
  • first and the second part 1122, 1124 of each barrier 1120 are in sealing contact only with a single lever 1032 which ensures optimal placement of the barrier 1120 in contact with the lever 1032.

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

Description

La présente invention concerne une machine de formation de la foule, de type ratière ou mécanique à cames, pour un métier à tisser.The present invention relates to a machine for forming the crowd, dobby type or mechanical cam, for a loom.

Dans le domaine du tissage, il est connu d'utiliser des machines de formation de la foule qui présentent un groupe de leviers de sortie montés rotatifs autour d'un arbre commun. Chaque levier de sortie est relié à un cadre de lisses du métier à tisser par l'intermédiaire d'un ensemble de leviers et de bielles couramment dénommé « tirage ». Les oscillations alternées de chaque levier de sortie autour d'un axe longitudinal de l'arbre commun entraînent un mouvement d'oscillations verticales du cadre de lisses auquel le levier de sortie en question est relié. Ces oscillations impriment ainsi un mouvement à des fils de chaîne d'un tissu à réaliser, de sorte qu'un motif du tissu est défini en fonction des oscillations des cadres de lisses.In the field of weaving, it is known to use crowd forming machines which have a group of output levers rotatably mounted around a common shaft. Each output lever is connected to a heald frame of the loom via a set of levers and rods commonly referred to as "draw". The alternating oscillations of each output lever about a longitudinal axis of the common shaft causes a movement of vertical oscillations of the heddle frame to which the output lever in question is connected. These oscillations thus impart a movement to the warp threads of a fabric to be produced, so that a pattern of the fabric is defined as a function of the oscillations of the heald frames.

Certaines machines de formation de la foule sont de type mécanique à cames et comprennent un arbre d'entrée et un arbre à cames entraîné par l'arbre d'entrée. Chaque came définit deux pistes conjuguées sur lesquelles viennent respectivement en appui deux galets d'un levier de sortie.Some crowd forming machines are of the mechanical cam type and include an input shaft and a camshaft driven by the input shaft. Each cam defines two conjugate tracks on which are respectively supported two rollers of an output lever.

D'autres machines de formation de la foule sont de type ratière et comprennent un arbre principal pourvu d'éléments d'actionnement excentriques pour entraîner les leviers de sortie selon un mouvement d'oscillation sous l'action de la rotation de l'arbre principal. En pratique, les éléments d'actionnement sont reliés aux leviers de sortie par des bielles. La rotation de l'arbre principal est interrompue à chaque demi-tour. En fonction du motif à obtenir pour le tissu à réaliser, lors de chaque arrêt de l'arbre principal, un dispositif de sélection de la ratière solidarise l'élément d'actionnement soit avec l'arbre principal pour commander le mouvement du levier de sortie correspondant, soit avec un point fixe afin d'opérer une immobilisation angulaire du levier de sortie.Other crowd forming machines are dobby type and comprise a main shaft provided with eccentric actuating elements for driving the output levers in an oscillating motion under the action of rotation of the main shaft. . In practice, the actuating elements are connected to the output levers by connecting rods. The rotation of the main shaft is interrupted at each half-turn. Depending on the pattern to be obtained for the fabric to be produced, at each stop of the main shaft, a dobby selection device secures the actuating element with the main shaft to control the movement of the output lever. corresponding, or with a fixed point in order to operate an angular immobilization of the output lever.

Que la machine soit une ratière ou une mécanique à cames, les différents arbres, les leviers ainsi que les différentes liaisons mécaniques qui les relient sont supportés par un bâti de la machine et recouverts par un capot de protection amovible. Les extensions des leviers de sortie s'étendent au travers d'un évidement du capot vers l'extérieur de la machine.Whether the machine is a dobby or a cam mechanism, the various shafts, the levers and the various mechanical connections that connect them are supported by a frame of the machine and covered by a removable protective cover. The extensions of the output levers extend through a recess of the cover to the outside of the machine.

Compte tenu des vitesses de fonctionnement de plus en plus élevées de ces machines, il est connu de EP-A-0 140 800 d'utiliser des roulements à aiguilles, entre les leviers de sortie et l'arbre commun, ainsi que des butées axiales, entre deux leviers adjacents. Ces articulations à roulement doivent être lubrifiées pour fonctionner correctement. De l'huile contenue dans la machine de formation de la foule peut être utilisée à cet effet, mais des fuites vers l'extérieur doivent être exclues, pour éviter de salir le tissu en cours de fabrication sur le métier. Le mouvement à haute vitesse des leviers est susceptible de produire des projections d'huile. Dans le cas d'une ratière, les bielles d'actionnement des leviers de sortie sont animées d'un mouvement combiné de rotation et de translation à très forte accélération qui projette également de l'huile de lubrification vers les leviers de sortie. Dans le cas d'une mécanique à cames, le nivelage des leviers rend également plus complexe la conception de moyens d'étanchéité efficaces.In view of the higher operating speeds of these machines, it is known to EP-A-0 140 800 use of needle bearings, between the output levers and the common shaft, as well as axial stops, between two adjacent levers. These rolling joints must be lubricated to work correctly. Oil contained in the shedding machine may be used for this purpose, but leakage to the outside must be excluded, to avoid dirtying the fabric being manufactured on the craft. The high speed movement of the levers is likely to produce oil splashes. In the case of a dobby, the operating rods of the output levers are driven by a combined movement of rotation and translation at very high acceleration which also projects lubricating oil to the output levers. In the case of a cam mechanism, the leveling of the levers also makes it more difficult to design effective sealing means.

EP-B-2 492 381 décrit une ratière qui comprend des entretoises de séparation des leviers de sortie. Chaque entretoise est pourvue d'un orifice central de passage de l'arbre commun, de logements qui bordent l'orifice central pour la réception et le maintien des butées axiales, et d'un logement de réception d'un joint circulaire qui entoure l'arbre central et l'une des butées axiales. Chaque entretoise comprend également d'un bandeau pour recouvrir l'espace ménagé entre deux entretoises adjacentes et ainsi limiter l'échappement de lubrifiant. Une couche de feutre qui s'étend au contact de tous les leviers est également prévue pour limiter les fuites d'huile entre les entretoises et un patin de la machine. EP-B-2 492 381 discloses a dobby that includes spacers separating the output levers. Each spacer is provided with a central passage opening of the common shaft, housing which surrounds the central orifice for receiving and maintaining the axial stops, and a housing for receiving a circular seal which surrounds the liner. central shaft and one of the axial stops. Each spacer also comprises a strip to cover the space between two adjacent spacers and thus limit the escape of lubricant. A layer of felt that extends in contact with all the levers is also provided to limit oil leakage between the spacers and a pad of the machine.

Toutefois, en cas de débattement des leviers de sortie le long de l'arbre commun, ou de mouvement angulaire des leviers par rapport à l'arbre commun sous l'effet de contraintes exercées sur les leviers de sortie pendant le tissage, les joints toriques sont susceptibles de se décoller du flanc de leur levier associé, ce qui provoque des fuites de lubrifiant. Le bandeau, quant à lui, ne garantit pas, à lui seul, l'absence de fuites dans le cas où les leviers et les différents arbres sont mis en mouvement à haute vitesse.However, if the output levers move along the common shaft, or angular movement of the levers relative to the common shaft under the effect of stresses exerted on the output levers during weaving, the O-rings are likely to come off the sidewall of their associated lever, which causes leakage of lubricant. The band, meanwhile, does not guarantee, by itself, the absence of leaks in the case where the levers and the various trees are set in motion at high speed.

DE 81 31 638 U1 décrit une machine de formation de la foule comprenant un arbre, des leviers montés sur cet arbre, une paroi pourvue d'une barrière d'étanchéité rectangulaire interposée entre le paroi et des bielles connectées aux leviers via une axe. DE 81 31 638 U1 discloses a shedding machine comprising a shaft, levers mounted on said shaft, a wall provided with a rectangular sealing barrier interposed between the wall and connecting rods connected to the levers via an axis.

En conséquence, l'invention vise à porter remède aux différents inconvénients mentionnés ci-dessus.Accordingly, the invention aims to remedy the various disadvantages mentioned above.

L'invention a pour objet une machine de formation de la foule, de type ratière ou mécanique à cames, pour un métier à tisser, la machine comprenant des leviers de sortie qui comprennent chacun un premier flanc, un deuxième flanc, une première tranche reliant le premier flanc au deuxième flanc et une deuxième tranche opposée à la première tranche et reliant le premier flanc au deuxième flanc. La machine comprend également un arbre commun, sur lequel sont montés les leviers de sortie et définissant un axe longitudinal, des moyens d'entraînement des leviers de sortie selon un mouvement d'oscillation alternatif autour de l'arbre commun, une enveloppe extérieure, qui est traversée par les leviers de sortie, un bâti qui délimite, avec l'enveloppe extérieure, un volume intérieur de la machine et au moins une première barrière d'étanchéité interposée entre l'enveloppe extérieure et un premier levier parmi les leviers de sortie. Selon l'invention, la première barrière d'étanchéité est en contact étanche avec le premier levier sur toute la périphérie du premier levier et comprend une première portion radiale qui est en contact étanche avec l'une parmi la première tranche et la deuxième tranche du premier levier, une deuxième portion radiale qui est en contact étanche avec la deuxième tranche du premier levier, une première portion latérale, qui est en contact étanche avec le premier flanc du premier levier et qui est disposée dans la continuité de chacune des deux portions radiales, et une deuxième portion latérale, qui est en contact étanche avec le deuxième flanc du premier levier, et qui est disposée dans la continuité de chacune des deux portions radiales. En outre, la première barrière d'étanchéité est logée dans l'enveloppe extérieure qui est fixe par rapport au bâti de la machine lorsque les leviers de sortie sont en mouvement d'oscillation alternatif autour de l'arbre commun, la première portion radiale de la première barrière d'étanchéité étant en contact étanche avec une surface courbe de la première tranche et la deuxième portion radiale de la première barrière d'étanchéité étant en contact étanche avec une surface courbe de la deuxième tranche, chacune des surfaces courbes étant à section en forme d'arc de cercle coaxial avec l'axe longitudinal défini par l'arbre commun.The subject of the invention is a machine for forming a crowd, of the dobby or mechanical cam type, for a loom, the machine comprising output levers which each comprise a first flank, a second flank, a first slice connecting the first flank to the second flank and a second slice opposite to the first slice and connecting the first flank to the second flank. The machine also comprises a common shaft, on which are mounted the output levers and defining a longitudinal axis, means for driving the output levers in an alternating oscillation movement around the common shaft, an outer casing, which is traversed by the output levers, a frame which delimits, with the outer casing, an interior volume of the machine and at least a first interposed sealing barrier between the outer shell and a first lever among the output levers. According to the invention, the first sealing barrier is in sealing contact with the first lever over the entire periphery of the first lever and comprises a first radial portion which is in sealing contact with one of the first wafer and the second wafer. first lever, a second radial portion which is in sealing contact with the second slice of the first lever, a first lateral portion which is in sealing contact with the first flank of the first lever and which is arranged in continuity with each of the two radial portions and a second lateral portion, which is in sealing contact with the second flank of the first lever, and which is arranged in the continuity of each of the two radial portions. In addition, the first sealing barrier is housed in the outer casing which is fixed relative to the frame of the machine when the output levers are in alternating oscillation movement around the common shaft, the first radial portion of the first sealing barrier being in sealing contact with a curved surface of the first wafer and the second radial portion of the first sealing barrier being in sealing contact with a curved surface of the second wafer, each of the curved surfaces being sectioned; in the form of a circular arc coaxial with the longitudinal axis defined by the common shaft.

Grâce à l'invention, l'étanchéité du volume intérieur de la machine est assurée au plus près du premier levier de sortie par la première barrière d'étanchéité. Cette étanchéité est continue, en particulier entre chaque portion latérale et chaque portion radiale, pour garantir l'absence de fuite sur toute la longueur de la barrière, même lorsque la machine fonctionne à haute vitesse. La barrière d'étanchéité continue évite les projections d'huile hors du volume intérieur de la machine.Thanks to the invention, the sealing of the internal volume of the machine is ensured closer to the first output lever by the first sealing barrier. This seal is continuous, especially between each lateral portion and each radial portion, to ensure the absence of leakage over the entire length of the barrier, even when the machine operates at high speed. The continuous sealing barrier prevents splashes of oil from the interior of the machine.

Selon d'autres caractéristiques avantageuses de l'invention, prises isolément ou en combinaison :

  • La première barrière d'étanchéité comprend au moins un premier joint d'étanchéité et un deuxième joint d'étanchéité qui constituent deux pièces distinctes, le premier joint d'étanchéité comprenant la première portion latérale, le deuxième joint d'étanchéité comprenant la deuxième portion latérale, chacune des deux portions radiales reliant le premier joint d'étanchéité et le deuxième joint d'étanchéité.
  • Le premier joint d'étanchéité comprend :
    • la première portion radiale et,
    • la deuxième portion radiale,
    la première portion radiale et la deuxième portion radiale sont monoblocs avec la première portion latérale.
  • La première barrière d'étanchéité comprend en outre au moins un premier moyen d'emboîtement parallèlement à l'axe longitudinal d'une extrémité du deuxième joint avec la première portion radiale et un deuxième moyen d'emboîtement parallèlement à l'axe longitudinal d'une extrémité du deuxième joint avec la deuxième portion radiale.
  • Une barrière d'étanchéité avec une première portion radiale, une deuxième portion radiale, une première portion latérale et une deuxième portion latérale est interposée entre l'enveloppe extérieure et chacun des leviers de sortie.
  • Chaque portion radiale de chaque barrière d'étanchéité comprend des moyens d'emboîtement dans une direction parallèle à l'axe longitudinal avec la portion radiale adjacente d'une autre barrière d'étanchéité.
  • Chacune des portions latérales et radiales de la première barrière d'étanchéité comprend au moins deux lèvres parallèles par l'intermédiaire desquelles la première barrière d'étanchéité est en contact étanche avec le premier levier.
  • L'enveloppe extérieure comprend un capot et des entretoises, juxtaposées le long de l'axe longitudinal dans une fenêtre du capot dont au moins une première entretoise de levier et une deuxième entretoise de levier adjacentes qui sont disposées de part et d'autre du premier levier, la première barrière d'étanchéité étant en partie logée dans la première entretoise de levier et en partie logée dans la deuxième entretoise de levier.
  • Les entretoises de levier incluent deux entretoises de levier latérales, les entretoises de levier et les leviers de sortie sont maintenus le long de l'axe longitudinal entre deux moyens de fixation axiaux fixés sur l'arbre commun et la machine comprend deux rondelles de renfort, chaque rondelle de renfort étant disposée le long de l'axe longitudinal, entre l'un des moyens de fixation et l'une des entretoises de levier latérale, chaque rondelle de renfort étant en appui contre l'une des entretoises de levier latérales.
  • La machine comprend des butées axiales à éléments roulants montées autour de l'arbre commun, les leviers de sortie étant chacun interposés entre deux des butées axiales, alors que chaque entretoise de levier comprend une ouverture de passage de l'arbre commun, de forme sensiblement circulaire centrée sur l'axe longitudinal, chaque ouverture de passage recevant l'une des butées axiales.
  • Au moins deux des entretoises de levier adjacentes le long de l'axe longitudinal comprennent des moyens de solidarisation de l'une avec l'autre dans une direction parallèle à l'axe longitudinal.
  • La machine est de type mécanique à cames. Elle est conçue pour évoluer entre une configuration de tissage dans laquelle les leviers de sortie sont entraînés par les moyens d'entraînement et une configuration de nivelage dans laquelle les leviers de sortie sont découplés des moyens d'entraînement, l'évolution entre la configuration de tissage et la configuration de nivelage entraînant un déplacement des entretoises de levier par rapport au bâti.
  • La machine comprend un profil solidaire du bâti, le profil présentant une rainure qui s'étend parallèlement à l'axe longitudinal, chaque entretoise de levier comprenant une patte d'extrémité qui est mobile dans la rainure entre la configuration de tissage et la configuration de nivelage.
  • L'enveloppe extérieure comprend au moins une première entretoise fixe et une deuxième entretoise fixe, qui sont fixes par rapport au bâti lors de l'évolution de la machine entre la configuration de tissage et la configuration de nivelage, les entretoises de levier disposées de part et d'autre des leviers de sortie étant bordées le long de l'axe longitudinal d'un côté par la première entretoise fixe et de l'autre côté par la deuxième entretoise fixe.
  • Les entretoises présentent une partie supérieure et une partie inférieure et se chevauchent deux à deux le long de l'axe longitudinal en partie supérieure et en partie inférieure.
According to other advantageous features of the invention, taken separately or in combination:
  • The first sealing barrier comprises at least a first seal and a second seal which constitute two distinct pieces, the first seal comprising the first lateral portion, the second seal comprising the second portion. lateral, each of the two radial portions connecting the first seal and the second seal.
  • The first seal includes:
    • the first radial portion and,
    • the second radial portion,
    the first radial portion and the second radial portion are integral with the first lateral portion.
  • The first sealing barrier further comprises at least a first interlocking means parallel to the longitudinal axis of an end of the second seal with the first radial portion and a second engagement means parallel to the longitudinal axis of one end of the second seal with the second radial portion.
  • A sealing barrier with a first radial portion, a second radial portion, a first lateral portion and a second lateral portion is interposed between the outer shell and each of the output levers.
  • Each radial portion of each sealing barrier comprises interlocking means in a direction parallel to the longitudinal axis with the adjacent radial portion of another sealing barrier.
  • Each of the lateral and radial portions of the first sealing barrier comprises at least two parallel lips through which the first sealing barrier is in sealing contact with the first lever.
  • The outer casing includes a hood and spacers juxtaposed along the longitudinal axis in a hood window including at least a first lever spacer and a second adjacent lever spacer which are disposed on either side of the first one. lever, the first sealing barrier being partially housed in the first lever spacer and partly housed in the second lever spacer.
  • The lever spacers include two lateral lever spacers, the lever spacers and the output levers are maintained along the longitudinal axis between two axial attachment means secured to the common shaft and the machine comprises two reinforcing rings, each reinforcing washer being disposed along the longitudinal axis, between one of the fixing means and one of the lateral lever spacers, each reinforcing washer being in abutment against one of the lateral lever spacers.
  • The machine comprises axial thrust bearings with rolling elements mounted around the common shaft, the output levers being each interposed between two axial abutments, whereas each lever spacer comprises a passage opening of the common shaft, of substantially circular centered on the longitudinal axis, each passage opening receiving one of the axial stops.
  • At least two of the adjacent lever spacers along the longitudinal axis comprise means for securing each other in a direction parallel to the longitudinal axis.
  • The machine is of the mechanical cam type. It is designed to evolve between a weaving configuration in which the output levers are driven by the drive means and a leveling configuration in which the output levers are decoupled from the drive means, the change between the weave configuration and the leveling configuration causing a displacement of the lever spacers relative to the frame.
  • The machine comprises a profile integral with the frame, the profile having a groove which extends parallel to the longitudinal axis, each lever spacer comprising an end tab which is movable in the groove between the weaving configuration and the configuration of the leveling.
  • The outer casing comprises at least a first fixed spacer and a second fixed spacer, which are fixed relative to the frame during the evolution of the machine between the weave configuration and the leveling configuration, the lever spacers arranged from and other output levers being bordered along the longitudinal axis of one side by the first fixed spacer and the other side by the second fixed spacer.
  • The spacers have an upper portion and a lower portion and overlap in pairs along the longitudinal axis at the top and bottom.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif et non exhaustif et faite en se référant aux dessins dans lesquels :

  • La figure 1 est une vue en perspective d'une machine de formation de la foule selon un premier mode de réalisation conforme à l'invention ;
  • La figure 2 est une coupe longitudinale partielle de la machine de la figure 1 ;
  • La figure 3 est une vue éclatée partielle d'un sous-ensemble de la machine des figures 1 et 2 ;
  • La figure 4 est une vue à plus grande échelle, d'un détail IV de la figure 3 ;
  • Les figures 5 et 6 sont des vues en perspective d'une entretoise latérale et d'une entretoise intermédiaire, appartenant respectivement au sous-ensemble la machine des figures 1 à 4 ;
  • Les figures 7 et 8 sont des vues en perspective de deux parties d'un joint de la machine des figures 1 à 4 ;
  • Les figures 9 et 10 sont des coupes transversales à plus petite échelle selon le trait de coupe IX-IX de la figure 2, la machine étant représentée dans une configuration de tissage à la figure 9 et dans une configuration de nivelage à la figure 10 ; la ligne de coupe II-II de la coupe de la figure 2 est représentée sur la figure 9 ;
  • La figure 11 est une vue en perspective éclatée partielle d'une machine de formation de la foule selon un deuxième mode de réalisation conforme à l'invention ; et
  • La figure 12 est une coupe transversale partielle de la machine de la figure 11.
The invention will be better understood on reading the description which will follow, given solely by way of nonlimiting and non-exhaustive example and with reference to the drawings in which:
  • The figure 1 is a perspective view of a crowd forming machine according to a first embodiment according to the invention;
  • The figure 2 is a partial longitudinal section of the machine of the figure 1 ;
  • The figure 3 is a partial exploded view of a subset of the machine's figures 1 and 2 ;
  • The figure 4 is a view on a larger scale, of a detail IV of the figure 3 ;
  • The Figures 5 and 6 are perspective views of a lateral spacer and an intermediate spacer, respectively belonging to the subset the machine of the Figures 1 to 4 ;
  • The Figures 7 and 8 are perspective views of two parts of a machine joint of the Figures 1 to 4 ;
  • The Figures 9 and 10 are cross-sections on a smaller scale according to section line IX-IX of the figure 2 , the machine being represented in a weaving configuration at the figure 9 and in a leveling configuration to the figure 10 ; the cut line II-II of the cut of the figure 2 is represented on the figure 9 ;
  • The figure 11 is a fragmentary exploded perspective view of a shedding machine according to a second embodiment according to the invention; and
  • The figure 12 is a partial cross section of the machine the figure 11 .

La machine 2 de formation de la foule représentée aux figures 1 à 10 est de type mécanique à cames et comprend un arbre d'entrée 4, destiné à être entraîné en rotation par des moyens d'entraînement d'un métier à tisser non représenté. L'arbre d'entrée 4 est supporté par un bâti 6 de la machine 2. Cette dernière comprend également un arbre d'entraînement 8 visible aux figures 9 et 10, qui est également supporté par le bâti 6 et est entraîné en rotation, autour de son axe propre X8 et par rapport au bâti 6, par l'arbre d'entrée 4. L'arbre 4 et l'arbre 8 sont perpendiculaires entre eux et reliés par des moyens de transmission non visibles aux figures. La machine 2 comprend également un arbre commun 10 cylindrique dont l'axe central propre X10 est parallèle à l'axe X8.The crowd forming machine 2 shown in FIGS. Figures 1 to 10 is of the mechanical cam type and comprises an input shaft 4, intended to be rotated by drive means of a not shown loom. The input shaft 4 is supported by a frame 6 of the machine 2. The latter also comprises a drive shaft 8 visible to the Figures 9 and 10 which is also supported by the frame 6 and is rotated, about its own axis X8 and with respect to the frame 6, by the input shaft 4. The shaft 4 and the shaft 8 are perpendicular to each other and connected by transmission means not visible in the figures. The machine 2 also comprises a cylindrical common shaft 10 whose own central axis X10 is parallel to the axis X8.

Par commodité, la présente description est orientée selon la figure 1, les termes « haut » et « supérieur » désignant une direction orientée vers le haut de la figure 1, les termes « bas » et « inférieur » désignant une direction opposée. Le terme « axial » désigne quant à lui, sauf mention contraire, une orientation parallèle à l'axe X10.For convenience, the present description is oriented according to the figure 1 , the terms "up" and "upper" denoting a direction facing the top of the figure 1 the terms "low" and "lower" denoting an opposite direction. The term "axial" designates meanwhile, unless otherwise stated, an orientation parallel to the axis X10.

Le bâti 6 forme un support inférieur en forme de cuve. La machine 2 comprend également un capot 12 qui est monté de manière amovible sur le bâti 6 de manière à délimiter avec ce dernier un volume intérieur V de la machine 2 au sein duquel les arbres 8 et 10 sont montés. Le capot 12 est ainsi disposé en partie supérieure de la machine 2 et présente un bord inférieur 18 qui est en contact avec un bord supérieur 20 correspondant du bâti 6.The frame 6 forms a lower support in the form of a tank. The machine 2 also comprises a cover 12 which is removably mounted on the frame 6 so as to define therewith an internal volume V of the machine 2 in which the shafts 8 and 10 are mounted. The cover 12 is thus disposed in the upper part of the machine 2 and has a lower edge 18 which is in contact with a corresponding upper edge 20 of the frame 6.

L'arbre d'entrée 4 traverse le bâti 2 depuis l'extérieur de la machine jusqu'au sein du volume V. La machine 2 comprend des moyens de lubrification, par exemple un bain d'huile dans la cuve du bâti 6 alimentant un circuit d'huile, des éléments mécaniques disposés au sein du volume V, notamment des arbres 4, 8 et 10. De l'huile circule ainsi dans le volume intérieur V.The input shaft 4 passes through the frame 2 from the outside of the machine to the inside of the volume V. The machine 2 comprises lubricating means, for example an oil bath in the tank of the frame 6 feeding a oil circuit, mechanical elements disposed within the volume V, including the shafts 4, 8 and 10. Oil thus flows in the interior volume V.

Une fenêtre 14 est ménagée au travers du capot 12 à partir du bord 18 et est délimitée par deux bords latéraux 26 et un bord supérieur 27. Le bord 20 du bâti 6 est pourvu en partie inférieure de la fenêtre 14 d'un profil inférieur 22, tel qu'illustré aux figures 9 et 10. Le profil inférieur 22 s'étend parallèlement aux axes X8 et X10. Un profil supérieur 24, en partie supérieure de la fenêtre 14, est fixé au bâti 6. Les profils 22 et 24 sont parallèles entre eux et reliés l'un à l'autre par les deux bords latéraux 26 de la fenêtre 14, également parallèles entre eux, de sorte que la fenêtre 14 présente une forme générale rectangulaire. Un ensemble 30 de la machine 2, décrit dans ce qui suit, est monté au sein de la fenêtre 14 pour délimiter le volume intérieur V.A window 14 is formed through the cover 12 from the edge 18 and is delimited by two lateral edges 26 and an upper edge 27. The edge 20 of the frame 6 is provided in the lower part of the window 14 of a lower profile 22 as illustrated in Figures 9 and 10 . The lower profile 22 extends parallel to the axes X8 and X10. An upper profile 24, in the upper part of the window 14, is fixed to the frame 6. The profiles 22 and 24 are parallel to each other and connected to each other by the two side edges 26 of the window 14, also parallel to each other, so that the window 14 has a generally rectangular shape. An assembly 30 of the machine 2, described in the following, is mounted within the window 14 to delimit the interior volume V.

Un joint d'étanchéité 16 est interposé entre les bords 18 et 20, tout le long de ces derniers, hormis le long du profil inférieur 22 où le joint 16 est interrompu. Un autre joint d'étanchéité 28 prolonge le joint 16 le long des bords 26 et du bord supérieur de la fenêtre 14. Les joints 16 et 28 forment ainsi une boucle fermée pour garantir l'étanchéité entre le capot 12 et le bâti 6. Le capot 12 et l'ensemble 30 forment ainsi une enveloppe extérieure de la machine 2, délimitant le volume V avec le bâti 6.A seal 16 is interposed between the edges 18 and 20, all along them, except along the lower profile 22 where the seal 16 is interrupted. Another seal 28 extends the seal 16 along the edges 26 and the upper edge of the window 14. The seals 16 and 28 thus form a closed loop to ensure the seal between the cover 12 and the frame 6. The cover 12 and the assembly 30 and form an outer casing of the machine 2, defining the volume V with the frame 6.

La machine 2 comprend également des leviers de sortie 32 qui sont montés rotatifs sur l'arbre commun 10, indépendamment les uns des autres, autour de l'axe X10. Les leviers 32 s'étendent chacun dans un plan P32 orthogonal à l'axe X10. Comme visible aux figures 1 et 2, huit leviers 32 sont montés sur la machine 2. Sur la figure 3, seuls deux des leviers 32 sont représentés. Le nombre de leviers 32 montés sur l'arbre 10 peut être adapté en fonction du type de métier à tisser auquel la machine 2 est intégrée et du motif du tissu à tisser sur ce métier.The machine 2 also comprises output levers 32 which are rotatably mounted on the common shaft 10, independently of each other, around the axis X10. The levers 32 each extend in a plane P32 orthogonal to the axis X10. As visible to figures 1 and 2 , eight levers 32 are mounted on the machine 2. On the figure 3 only two of the levers 32 are shown. The number of levers 32 mounted on the shaft 10 can be adapted according to the type of loom to which the machine 2 is integrated and the pattern of the fabric to be woven on this loom.

Chaque levier 32 comprend un corps 34 plan qui s'étend, en majeure partie, dans le volume intérieur V et qui est monté rotatif sur l'arbre 10 par l'intermédiaire d'un roulement 36 visible aux figures 2, 3, 9 et 10, indépendamment des autres leviers 32. En pratique, un orifice circulaire 44 est ménagé au travers le corps 34 de façon orthogonale au plan P32, au sein duquel le roulement 36 est monté, de sorte que l'arbre 10 passe au travers du roulement 36 et du levier 32.Each lever 32 comprises a plane body 34 which extends, for the most part, in the internal volume V and which is rotatably mounted on the shaft 10 by means of a bearing 36 visible to the figures 2 , 3 , 9 and 10 independently of the other levers 32. In practice, a circular orifice 44 is formed through the body 34 orthogonally to the plane P32, within which the bearing 36 is mounted, so that the shaft 10 passes through the bearing 36 and lever 32.

Le corps 34 traverse la fenêtre 14 ainsi que l'ensemble 30 et est prolongé à l'extérieur de la machine 2 par une extension 38 du levier 32. Les extensions 38 sont reliées à des éléments mécaniques du tirage, non illustrés, pour former la foule sur le métier. Chaque levier 32 présente un premier flanc 42 et un deuxième flanc 40 qui s'étendent dans des plans parallèles au plan P32 et orthogonaux à l'axe X10, au niveau du corps 34 et de l'extension 38, de manière à définir entre eux une épaisseur e32 du levier 32, mesurée perpendiculairement au plan P32 et visible à la figure 2. Les flancs 40 et 42 sont reliés par une tranche périphérique perpendiculaire au plan P32 comprenant d'une part une tranche 46 supérieure du levier 32 et d'autre part une tranche 48 inférieure du levier 32, opposée à la tranche 46 supérieure. Chaque levier 32 est équipé d'une paire de galets 50 et 51, en l'espèce des galets supérieur 50 et inférieur 51, qui sont chacun rotatifs par rapport au levier 32 en question, autour d'un axe propre X50 et X51 du galet 50 et du galet 51 respectivement, qui s'étend parallèlement à l'axe X10. Les deux galets 50, 51 sont disposés à distance l'un de l'autre, le galet supérieur 50 étant situé au dessus du galet inférieur 51 sur les figures 9 et 10. La tranche 46 s'étend à partir du sommet de l'extension 38 jusqu'au galet supérieur 50 du levier 32, monté sur le corps 34. La tranche 48 s'étend également à partir du sommet de l'extension 38 jusqu'au galet inférieur 51 du levier 32, également monté sur le corps 34. Les tranches 46 et 48 s'étendant dans le sens de l'épaisseur e32. Une section transversale du levier 32 est ainsi délimitée par les tranches 46 et 48 ainsi que par les flancs 40 et 42.The body 34 passes through the window 14 and the assembly 30 and is extended outside the machine 2 by an extension 38 of the lever 32. The extensions 38 are connected to mechanical elements of the draw, not illustrated, to form the crowd on the craft. Each lever 32 has a first flank 42 and a second flank 40 which extend in planes parallel to the plane P32 and orthogonal to the axis X10, at the body 34 and the extension 38, so as to define between them a thickness e32 of the lever 32, measured perpendicular to the plane P32 and visible at the figure 2 . Flanks 40 and 42 are connected by a peripheral wafer perpendicular to plane P32 comprising on the one hand an upper wafer 46 of lever 32 and, on the other hand, a lower wafer 48 of lever 32, opposite upper wafer 46. Each lever 32 is equipped with a pair of rollers 50 and 51, in this case upper rollers 50 and lower 51, which are each rotatable relative to the lever 32 in question, about a proper axis X 50 and X51 of the roller 50 and the roller 51 respectively, which extends parallel to the axis X10. The two rollers 50, 51 are arranged at a distance from one another, the upper roller 50 being located above the lower roller 51 on the Figures 9 and 10 . The wafer 46 extends from the top of the extension 38 to the upper roller 50 of the lever 32, mounted on the body 34. The wafer 48 also extends from the top of the extension 38 to lower roller 51 of the lever 32, also mounted on the body 34. The slices 46 and 48 extending in the direction of the thickness e32. A transverse section of the lever 32 is thus delimited by the slices 46 and 48 as well as by the flanks 40 and 42.

Les leviers 32 sont disposés parallèlement les uns aux autres le long de l'arbre 10 et séparés par des butées axiales 54 à éléments roulants, visibles aux figures 2 et 3, les éléments roulants étant par exemple des billes ou des rouleaux. Chaque butée axiale 54 est montée à cheval sur deux roulements 36 adjacents, de façon coaxiale à ces derniers et à l'axe X10. Des espaces de même épaisseur e54, laquelle est mesurée parallèlement aux épaisseurs e32, sont définis par les butées 54 et séparent les leviers 32 le long de l'arbre 10, en étant en appui contre les corps 34 des leviers 32. Deux des butées 54, disposées aux extrémités de l'arbre 10, sont en appui plan contre un seul des flancs 40 ou 42 de leur levier 32 adjacent respectif, ces deux leviers 32 constituant les deux leviers latéraux du groupe de leviers 32. Chacune des autres butées 54 est interposée entre le flanc 40 d'un premier levier 32 et le flanc 42 d'un deuxième levier 32 du groupe de leviers 32. Les leviers 32 qui sont interposés entre deux butées 54 constituent des leviers intermédiaires du groupe de levier 32. Les roulements 36 et les butées 54 bénéficient de la lubrification opérée au sein du volume V.The levers 32 are arranged parallel to each other along the shaft 10 and separated by axial stops 54 with rolling elements, visible to the figures 2 and 3 , the rolling elements being for example balls or rollers. Each axial abutment 54 is mounted astride two adjacent bearings 36, coaxially with the latter and the axis X10. Spaces of the same thickness e54, which is measured parallel to the thicknesses e32, are defined by the stops 54 and separate the levers 32 along the shaft 10, bearing against the bodies 34 of the levers 32. Two of the stops 54 , disposed at the ends of the shaft 10, are in plane support against only one of the flanks 40 or 42 of their respective adjacent lever 32, these two levers 32 constituting the two lateral levers of the lever group 32. Each of the other stops 54 is interposed between the flank 40 of a first lever 32 and the flank 42 of a second lever 32 of the lever group 32. The levers 32 which are interposed between two stops 54 constitute intermediate levers of the lever group 32. The bearings 36 and the stops 54 benefit from the lubrication performed within the volume V.

L'arbre d'entraînement 8 est pourvu d'une série de cames 52, les cames 52 sont solidaires en rotation de l'arbre 8, chaque came étant associée à un levier 32 et en particulier à la paire de galets 50, 51 du levier en question. La machine 2 est conçue pour fonctionner dans une configuration de tissage illustrée à la figure 9 dans laquelle l'arbre 8 entraîne chacun des leviers 32 en oscillation autour de l'arbre 10 dans le plan P32 associé par l'intermédiaire des cames 52 sur lesquelles roulent les galets 50, 51. En fonction de l'orientation et de la forme des cames 52, les leviers 32 sont actionnés en oscillation selon une séquence prédéterminée. En résumé, les arbres 4 et 8 ainsi que le système de cames 52 forment un moyen d'entraînement des leviers 32 via les galets 50 et 51 selon un mouvement d'oscillation alternatif autour de l'arbre 10. D'autres moyens d'entraînement connus peuvent être mis en œuvre en lieu et place de ce moyen d'entraînement 4, 8, 52. De préférence, en configuration de tissage, l'arbre 10 est lié, en rotation autour de son axe X10, au bâti 8 et est donc immobile lorsque les leviers 32 oscillent.The drive shaft 8 is provided with a series of cams 52, the cams 52 are integral in rotation with the shaft 8, each cam being associated with a lever 32 and in particular with the pair of rollers 50, 51 of the lever in question. The machine 2 is designed to operate in a weaving configuration illustrated in FIG. figure 9 in which the shaft 8 drives each of the levers 32 in oscillation around the shaft 10 in the plane P32 associated through the cams 52 on which the rollers 50, 51 roll. Depending on the orientation and shape the cams 52, the levers 32 are actuated in oscillation in a predetermined sequence. In summary, the shafts 4 and 8 as well as the cam system 52 form a drive means of the levers 32 via the rollers 50 and 51 in an alternating oscillation movement around the shaft 10. Other means of These drive means can be implemented in place of this drive means 4, 8, 52. Preferably, in the weaving configuration, the shaft 10 is connected, in rotation around its axis X10, the frame 8 and is therefore immobile when the levers 32 oscillate.

La tranche supérieure 46 de chacun des leviers 32 présente une surface courbe 56 à section en forme d'arc de cercle coaxial avec l'axe X10 de l'arbre commun 10, de sorte que la tranche supérieure 46 est localement circulaire, vue dans le plan P32, au niveau du corps 34, entre le galet 50, qui est supérieur et adjacent à la tranche 46, et l'extension 38. De la même façon, la tranche inférieure 48 comprend une surface courbe 58 à section en forme d'arc de cercle coaxial avec l'axe X10, de sorte que la tranche inférieure 48 est localement circulaire, vue dans le plan P32, au niveau du corps 34, entre le galet 51, qui est inférieur et adjacent à la tranche 48, et l'extension 38. Au niveau de l'extension 38, les tranches 46 et 48 présentent des portions courbes 60 qui s'étendent parallèlement entre elles.The upper edge 46 of each of the levers 32 has a curved surface 56 with a circular arc-shaped section coaxial with the axis X10 of the common shaft 10, so that the upper edge 46 is locally circular, as seen in FIG. P32 plane, at the body 34, between the roller 50, which is greater and adjacent to the wafer 46, and the extension 38. In the same way, the lower wafer 48 comprises a curved surface 58 with shaped section arc of a circle coaxial with the axis X10, so that the lower edge 48 is locally circular, seen in the plane P32, at the body 34, between the roller 51, which is lower and adjacent to the edge 48, and extension 38. At the extension 38, the slices 46 and 48 have curved portions 60 which extend parallel to each other.

La machine 2 est conçue pour évoluer entre la configuration de tissage dans laquelle l'arbre 10 est dans une position de tissage représentée à la figure 9 et une configuration de nivelage représentée à la figure 10, dans laquelle l'arbre 10 est déplacé à l'écart de l'arbre 8, transversalement à l'axe longitudinal X10, vers le haut de la machine 2 jusqu'à une position de nivelage, en restant parallèle à l'arbre 8. En pratique, la machine 2 comprend un système de nivelage, non illustré, apte à impartir un tel déplacement à l'arbre 10. Les leviers 32 sont ainsi soulevés, de sorte que le contact entre les galets 50 et 51 et les cames 52 est interrompu. En configuration de nivelage, les leviers 32 sont alors découplés des moyens d'entraînement. Le système de nivelage inclut un moyen de mise en butée des leviers 32 de sorte que ces derniers adoptent une orientation prédéterminée commune autour de l'axe X10 en configuration de nivelage et que leur oscillation est interrompue. En d'autres termes, les leviers 32 sont alignés autour de l'arbre 10 en configuration de nivelage.The machine 2 is designed to move between the weave pattern in which the shaft 10 is in a weaving position shown in FIG. figure 9 and a leveling configuration shown in the figure 10 , in which the shaft 10 is moved away from the shaft 8, transversely to the longitudinal axis X10, towards the top of the machine 2 to a leveling position, remaining parallel to the shaft 8 In practice, the machine 2 comprises a leveling system, not shown, able to impart such a displacement to the shaft 10. The levers 32 are thus raised, so that the contact between the rollers 50 and 51 and the cams 52 is interrupted. In the leveling configuration, the levers 32 are then decoupled from the drive means. The leveling system includes a means for abutting the levers 32 so that the latter adopt a common predetermined orientation about the X10 axis in leveling configuration and that their oscillation is interrupted. In other words, the levers 32 are aligned around the shaft 10 in the leveling configuration.

L'ensemble 30 logé au sein de la fenêtre 14 comprend, le long de l'axe X10, un empilement d'entretoises 62, 64, 66 et 68 de différents types, bordé par deux plaques latérales 70 de l'ensemble 30. Chacune des plaques 70 est elle-même bordée par une plaque d'appui 72, à l'opposé des entretoises 62, 64, 66, 68. Les entretoises 62, 64, 66 et 68 ainsi que les plaques 70 et 72 s'étendent chacune dans un plan parallèle aux plans P32 des leviers 32. Les entretoises 62, 64, 66 et 68 sont juxtaposées.The assembly 30 housed within the window 14 comprises, along the axis X10, a stack of spacers 62, 64, 66 and 68 of different types, bordered by two side plates 70 of the assembly 30. Each plates 70 is itself bordered by a support plate 72, opposite the spacers 62, 64, 66, 68. The spacers 62, 64, 66 and 68 and the plates 70 and 72 each extend in a plane parallel to the planes P32 of the levers 32. The struts 62, 64, 66 and 68 are juxtaposed.

En pratique, un ensemble de vis 74 traverse les plaques 70 et le bâti 6, de sorte que ces dernières forment un ensemble solidaire monté de façon amovible sur le bâti 6. Les plaques 70 sont pourvues chacune d'un anneau de levage 76 qui s'étend dans le plan d'extension de la plaque 70 et fait saillie vers le haut à l'extérieur de la machine 2 lorsque la plaque 70 est montée au sein de la fenêtre 14.In practice, a set of screws 74 passes through the plates 70 and the frame 6, so that the latter form a fixed assembly removably mounted on the frame 6. The plates 70 are each provided with a lifting ring 76 which is extends into the extension plane of the plate 70 and protrudes upwardly outside the machine 2 when the plate 70 is mounted within the window 14.

Chaque plaque d'appui 72 comprend un bord supérieur 82 de forme complémentaire avec celle du bord latéral 26 de la fenêtre 14, de sorte que le bord 82 est en contact étanche contre le joint 28 sur la longueur du bord 26.Each support plate 72 comprises an upper edge 82 of complementary shape with that of the lateral edge 26 of the window 14, so that the edge 82 is in sealing contact against the seal 28 along the length of the edge 26.

Chaque plaque latérale 70 reçoit en appui axial, c'est-à-dire parallèlement à l'axe X10, au moins une entretoise 68, dite « fixe », à l'opposé de la plaque d'appui 72. Chaque entretoise fixe 68 et chaque plaque 70 et 72 sont conformées pour s'interposer entre l'extérieur de la machine 2 et l'arbre 10.Each side plate 70 receives axially, that is to say parallel to the axis X10, at least one spacer 68, called "fixed", opposite the support plate 72. Each fixed spacer 68 and each plate 70 and 72 are shaped to interpose between the outside of the machine 2 and the shaft 10.

Une ou plusieurs entretoises fixes 68 adjacentes sont solidarisées à l'une des plaques latérales 70 par l'intermédiaire d'un ensemble de vis 78 qui traversent la plaque 70, la plaque 72 et la ou les entretoises fixes 68 adjacentes. Ainsi les plaques 72 et les entretoises 68 sont fixes par rapport au bâti 6, même lors de l'évolution de la machine entre la configuration de tissage et la position de nivelage. Chaque entretoise 68 comprend un corps principal 90 qui s'étend dans un plan parallèle aux plans P32. Le corps principal 90 se termine par une extrémité supérieure 88 et par un crochet de fixation 80 en extrémité inférieure opposée à l'extrémité supérieure. Chaque entretoise 68 est fixée à un bourrelet 166 du profil inférieur 22 du bâti 6 par l'intermédiaire du crochet 80 et comprend deux rebords 86 et 87 de recouvrement qui font saillie à partir du corps principal 90 de façon perpendiculaire aux plans P32 depuis l'extrémité supérieure 88 jusqu'à l'extrémité inférieure de l'entretoise 68. Le bourrelet 166 fait saillie en direction de l'intérieur de la fenêtre 14 et est visible aux figures 9 et 10. Les rebords 86 et 87 s'étendent depuis le crochet 80 jusqu'à l'extrémité haute 88, parallèlement à l'axe X10. Le rebord 86 suit un bord supérieur de l'entretoise 68, alors que le rebord 87 s'étend à distance du rebord 86 sur un bord inférieur 84 de l'entretoise 68, situé au voisinage de l'arbre 10. Un rebord interne 92 fait saillie du corps 90 dans une direction opposée à celle des rebords 86 et 87. Tel qu'illustré à la figure 2, le rebord interne 92 suit le bord de l'entretoise 68 depuis l'extrémité supérieure 88 jusqu'à l'extrémité inférieure de l'entretoise 68 et est conformé pour être chevauché par le rebord 87 d'une entretoise 68 adjacente ou un rebord d'une entretoise de levier latérale 62 ou 66 adjacente. Une chambre d'étanchéité C68 est ainsi ménagée entre les rebords 87, 86 et 92. Les entretoises 68 adjacentes sont ainsi en recouvrement partiel longitudinal le long de l'axe X10 de manière à former une couverture étanche au sein de la fenêtre 14. Dans le cas où l'entretoise 68 est disposée latéralement en appui contre la plaque 70, c'est par l'intermédiaire des rebords 87 et 86 en appui contre la plaque 70 que l'étanchéité est également assurée entre la plaque 70 et l'entretoise 68.One or more adjacent fixed struts 68 are secured to one of the side plates 70 by means of a set of screws 78 which pass through the plate 70, the plate 72 and the fixed spacer 68 or adjacent. Thus the plates 72 and the spacers 68 are fixed relative to the frame 6, even during the evolution of the machine between the weave configuration and the leveling position. Each spacer 68 comprises a main body 90 which extends in a plane parallel to the planes P32. The main body 90 ends with an upper end 88 and a fixing hook 80 at the lower end opposite the upper end. Each spacer 68 is attached to a bead 166 of the lower profile 22 of the frame 6 via the hook 80 and comprises two overlapping flanges 86 and 87 which protrude from the main body 90 perpendicularly to the planes P32 from the upper end 88 to the lower end of the spacer 68. The bead 166 projects towards the interior of the window 14 and is visible at Figures 9 and 10 . The flanges 86 and 87 extend from the hook 80 to the upper end 88, parallel to the axis X10. The flange 86 follows an upper edge of the spacer 68, while the flange 87 extends away from the flange 86 on a lower edge 84 of the spacer 68, located in the vicinity of the shaft 10. An inner flange 92 protrudes from the body 90 in a direction opposite to that of the flanges 86 and 87. As illustrated in FIG. figure 2 , the inner flange 92 follows the edge of the spacer 68 from the upper end 88 to the lower end of the spacer 68 and is shaped to be overlapped by the flange 87 of an adjacent spacer 68 or flange a lateral lever spacer 62 or 66 adjacent. A sealing chamber C68 is thus formed between the flanges 87, 86 and 92. The adjacent struts 68 are thus partially overlapped longitudinally along the axis X10 so as to form a sealed cover within the window 14. the case where the spacer 68 is disposed laterally in abutment against the plate 70, it is via the edges 87 and 86 resting against the plate 70 that the seal is also provided between the plate 70 and the spacer 68.

Le bord inférieur 84 de chaque entretoise 68 contourne l'arbre 10. Ce bord 84 est suffisamment à distance de l'arbre 10 pour autoriser le déplacement de l'arbre 10 entre la position de nivelage et la position de tissage.The lower edge 84 of each spacer 68 bypasses the shaft 10. This edge 84 is sufficiently remote from the shaft 10 to allow the displacement of the shaft 10 between the leveling position and the weaving position.

Les entretoises 68 disposées à une extrémité de l'ensemble 30 présentent les mêmes caractéristiques que les entretoises 68 disposées à l'autre extrémité de l'ensemble 30, mais sont de forme symétrique, tel qu'illustré aux figures 2 et 3.The spacers 68 disposed at one end of the assembly 30 have the same characteristics as the spacers 68 disposed at the other end of the assembly 30, but are symmetrical in shape, as illustrated in FIGS. figures 2 and 3 .

Une entretoise 68 est systématiquement montée à chaque extrémité de l'empilement d'entretoises, des entretoises 68 supplémentaires étant mises en place en remplacement de leviers manquants sur l'arbre 10. Les entretoises 68 supplémentaires sont dites « lames vides ».A spacer 68 is systematically mounted at each end of the stack of spacers, additional spacers 68 being put in place in place of missing levers on the shaft 10. The additional spacers 68 are called "empty blades".

Les entretoises 62, 64 et 66 sont disposées entre deux des entretoises 68 et sont nommées « entretoises de levier ». Les entretoises de levier 62, 64 et 66 forment un sous-ensemble qui, avec les leviers de sortie 32, est bordé d'un côté par au moins l'une des entretoises fixes 68, et de l'autre côté par une autre entretoise fixe 68, le long de l'arbre commun 10.The spacers 62, 64 and 66 are disposed between two of the spacers 68 and are called "lever spacers". The lever spacers 62, 64 and 66 form a subassembly which, with the output levers 32, is bordered on one side by at least one of the fixed spacers 68, and on the other side by another spacer fixed 68, along the common shaft 10.

En l'espèce, les entretoises de levier 62, 64 et 66 incluent une entretoise latérale gauche 62 illustrée seule à la figure 5, une entretoise latérale droite 66 et une ou plusieurs entretoises intermédiaires 64 dont une est illustrée à la figure 6. Les entretoises intermédiaires 64 sont toutes agencées entre les deux entretoises latérales 62 et 66 le long de l'arbre 10. Chaque entretoise intermédiaire 64 s'intercale entre deux des leviers de sortie 32, alors que chacune des entretoises latérales 62 et 66 est disposée contre un seul des leviers de sortie 32, en l'espèce les leviers latéraux.In this case, the lever spacers 62, 64 and 66 include a left side spacer 62 shown alone at figure 5 , a right lateral strut 66 and one or more intermediate struts 64, one of which is illustrated in FIG. figure 6 . The intermediate struts 64 are all arranged between the two lateral struts 62 and 66 along the shaft 10. Each intermediate strut 64 is interposed between two of the output levers 32, while each of the lateral struts 62 and 66 is arranged against only one of the output levers 32, in this case the lateral levers.

Le nombre d'entretoises intermédiaires 64 dépend du nombre de leviers 32. En fait, les entretoises intermédiaires 64 sont au nombre de N-1 si N est le nombre de leviers 32. Ainsi, dans l'exemple des figures, la machine 2 comprend sept entretoises intermédiaires 64. A la figure 3, qui est une vue partielle, seuls deux leviers 32 et la seule entretoise intermédiaire 64, interposée entre ces deux leviers, sont représentés, pour la clarté du dessin.The number of intermediate struts 64 depends on the number of levers 32. In fact, the intermediate struts 64 are N-1 in number if N is the number of levers 32. Thus, in the example of the figures, the machine 2 comprises seven intermediate struts 64. At the figure 3 , which is a partial view, only two levers 32 and the only intermediate spacer 64, interposed between these two levers, are shown for clarity of the drawing.

Les entretoises de levier 62 et 64 sont montées sur l'arbre commun 10 et représentées à part aux figures 5 et 6. L'entretoise 66 est également montée autour de l'arbre 10. Chacune des entretoises 62, 64 et 66 comprend un corps principal 94 qui s'étend dans un plan parallèle aux plans P32 lorsque l'entretoise en question est montée sur l'arbre 10. Le corps principal 94 est traversé, perpendiculairement à son plan d'extension, par une ouverture 96 traversante de passage de l'arbre 10, de forme circulaire centrée sur l'axe X10. Chaque entretoise de levier 62, 64 ou 66 est montée par l'intermédiaire de son ouverture 96 autour de l'une des butées 54, la butée 54 étant logée de manière centrée dans l'ouverture 96 dans la direction de l'axe X10, tel qu'illustré à la figure 2.The lever spacers 62 and 64 are mounted on the common shaft 10 and shown separately at Figures 5 and 6 . The spacer 66 is also mounted around the shaft 10. Each of the spacers 62, 64 and 66 comprises a main body 94 which extends in a plane parallel to the planes P32 when the spacer in question is mounted on the shaft 10. The main body 94 is crossed, perpendicular to its plane extension, through a through opening 96 through the shaft 10, circular shape centered on the axis X10. Each lever spacer 62, 64 or 66 is mounted through its opening 96 around one of the stops 54, the stop 54 being centrally housed in the opening 96 in the direction of the axis X10, as illustrated in figure 2 .

Les entretoises de levier 62, 64 et 66 sont agencées à la suite l'une de l'autre le long de l'arbre 10 de façon adjacente aux leviers 32, chaque levier 32 étant interposé entre deux entretoises de levier adjacentes. Ainsi, une première entretoise de levier 62 ou 64 et une deuxième entretoise 64 ou 66 sont disposées de part et d'autre de chaque levier 32.The lever struts 62, 64 and 66 are arranged one after the other along the shaft 10 adjacent the levers 32, each lever 32 being interposed between two adjacent lever struts. Thus, a first lever spacer 62 or 64 and a second spacer 64 or 66 are arranged on either side of each lever 32.

Le corps 94 de chaque entretoise de levier 62, 64 et 66 présente une première face 110 et une deuxième face 112 opposée à la première face 110, les faces 110 et 112 sont perpendiculaires à l'axe X10 et toutes les faces 110, respectivement 112, des entretoises 62, 64, 66 de l'ensemble 30 sont orientées dans la même direction selon l'axe X10.The body 94 of each lever spacer 62, 64 and 66 has a first face 110 and a second face 112 opposite the first face 110, the faces 110 and 112 are perpendicular to the axis X10 and all the faces 110 and 112 respectively. spacers 62, 64, 66 of the assembly 30 are oriented in the same direction along the axis X10.

Un joint circulaire 97, par exemple torique, est préférentiellement prévu autour de l'ouverture 96 sur la première face 110 et/ou sur la deuxième face 112, tel qu'illustré à la figure 2, de sorte que le contact entre le levier adjacent 32 et la face 110 ou 112 concernée est étanche autour et au voisinage de l'arbre 10. Dans ce cas, un logement circulaire 99 est prévu sur la face 110 ou 112 concernée pour recevoir ce joint 97, tel qu'illustré aux figures 5 et 6.A circular seal 97, for example an O-ring, is preferably provided around the opening 96 on the first face 110 and / or on the second face 112, as illustrated in FIG. figure 2 , so that the contact between the adjacent lever 32 and the face 110 or 112 concerned is tight around and in the vicinity of the shaft 10. In this case, a circular housing 99 is provided on the face 110 or 112 concerned to receive this. attached as shown in Figures 5 and 6 .

Deux éléments de clipsage 98 mâles, formés chacun par une pince, font saillie de la deuxième face 112 de l'entretoise latérale gauche 62 et de la première face 110 de l'entretoise latérale droite 66. Deux éléments de clipsage femelle 100 complémentaires des éléments 98, du genre paire d'orifices traversants, sont quant à eux ménagés au travers du corps principal 94 des entretoises intermédiaires 64. Les éléments mâles 98 d'une entretoise 62 ou 66 sont clipsés dans les éléments femelles 100 de l'entretoise de levier 64 adjacente pour solidariser l'entretoise 62 ou 66 avec l'entretoise 64 adjacente dans une direction parallèle à la direction axiale X10, afin d'empêcher l'écartement des entretoises 62 et 66 et des entretoises 64 et 66 et de garantir le positionnement axial relatif des entretoises 62 et 66 et des entretoises 64 et 66. Un élément de positionnement mâle inférieur 106 fait saillie de la deuxième face 112 de l'entretoise latérale gauche 62, respectivement de la deuxième face 112 des entretoises intermédiaires 64, et forme un rebord saillant qui entoure l'un des deux éléments 98, respectivement les éléments femelles 100 inférieurs, selon un contour fermé. Un élément de positionnement mâle supérieur 108 fait saillie de la deuxième face 112 de l'entretoise latérale gauche 62, respectivement des entretoises intermédiaires 64, et forme également un rebord saillant qui entoure le deuxième élément 98, respectivement les éléments femelles 100 supérieurs, selon un contour fermé. Les éléments de positionnement 106 et 108 d'une même entretoise 62, 64 sont distants l'un de l'autre, l'un étant situé en partie basse de l'entretoise concernée, l'autre en partie haute. Il en est de même pour les éléments 98. De la même façon, un élément de positionnement femelle inférieur 102 fait saillie de la première face 110 de l'entretoise latérale droite 66, respectivement des entretoises intermédiaires 64, et forme un rebord saillant qui entoure l'un des deux éléments mâles 98, respectivement des éléments femelles 100, selon un contour fermé. Un élément de positionnement femelle supérieur 104 fait saillie de la première face 110 de l'entretoise latérale droite 66, respectivement des entretoises intermédiaires 64, et forme également un rebord saillant qui entoure le deuxième élément mâle de clipsage 98, respectivement le deuxième élément femelle 100, selon un contour fermé. Les éléments de positionnement 102 et 104 d'une même entretoise 64, 66 sont distants l'un de l'autre, l'un étant situé en partie basse de l'entretoise concernée, l'autre en partie haute. Il en est de même pour les éléments 100. Les rebords saillants des éléments 102, 104, 106 et 108 s'étendent parallèlement à l'axe X10, de sorte que les éléments 102 et 104 s'emboîtent respectivement avec les éléments 106 et 108 dans la direction axiale X10. Le rebord de l'élément 104 présente une épaisseur e104, mesurée parallèlement à l'axe X10, dont la valeur est inférieure mais proche de celle de la somme des épaisseurs e32 et e54. De même, le rebord de l'élément 102 présente une épaisseur e102, mesurée parallèlement à l'axe X10. L'épaisseur e102 est également inférieure et proche de la somme des épaisseurs e32 et e54. Par exemple, l'épaisseur e104, de même que l'épaisseur e102, vaut 11,5 mm. Un jeu axial est ménagé entre les éléments 104 et 108 emboîtés, ainsi que entre les éléments 102 et 106 emboîtés. Les entretoises de levier 62, 64 et 66 sont ainsi positionnées l'une par rapport à l'autre par l'intermédiaire de moyens de liaison par clipsage 98 et 100 de deux entretoises de levier adjacentes, dont une entretoise latérale, ainsi que par l'intermédiaire d'éléments de positionnement 102, 104, 106 et 108 de deux entretoises de levier adjacentes. L'ensemble des entretoises de levier 62, 64 et 66, des leviers 32 et des butées axiales 54 est positionné axialement sur l'arbre 10 à l'aide de :

  • deux rondelles de renfort 103, disposées autour de l'arbre 10 de part et d'autre de l'empilement d'entretoises 62, 64 et 66, en l'espèce respectivement en appui contre les entretoises 62 et 66,
  • au moins une rondelle élastique 105, de forme conique, montée autour de l'arbre 10 en appui contre l'une des rondelles de renfort 103, afin de plaquer axialement chaque rondelle de renfort 103 contre l'entretoise 62 ou 66 concernée et contre la butée axiale 54 logée dans l'entretoise 62 ou 66 concernée, de sorte que l'ensemble des entretoises 62, 64 et 66 sont maintenues axialement entre les deux rondelles de renfort 103,
  • au moins une bague de rattrapage 107, montée autour de l'arbre 10, la rondelle élastique 105 étant interposée entre la bague 107 et la rondelle de renfort 103, la longueur axiale de la bague de rattrapage 107 correspondant à la longueur axiale des entretoises fixes 68 supplémentaires de la machine 2, afin d'occuper l'espace axial laissé libre le long de l'arbre 10 pour le montage d'éventuels leviers de sortie additionnels,
  • deux bagues de butée 109, montées autour de l'arbre, entre lesquelles sont montées les entretoises 62, 64 et 66, les rondelles 103 et 105 et la bague de rattrapage 107, et
  • deux moyens de fixation axiaux 111, constituant des arrêts axiaux, du genre circlips, fixés sur l'arbre 10 pour maintenir axialement le long de l'arbre 10 les entretoises 62, 64 et 68, les rondelles 103 et 105 et les bagues 107 et 109.
Two male clipping elements 98, each formed by a clamp, project from the second face 112 of the left lateral spacer 62 and the first face 110 of the right lateral spacer 66. Two female clipping elements 100 complementary to the elements 98, the like pair of through holes, are formed through the main body 94 intermediate spacers 64. The male elements 98 of a spacer 62 or 66 are clipped into the female elements 100 of the lever spacer 64 adjacent to secure the spacer 62 or 66 with the spacer 64 adjacent in a direction parallel to the axial direction X10, to prevent spacing of the spacers 62 and 66 and the spacers 64 and 66 and to ensure the axial positioning relative spacers 62 and 66 and spacers 64 and 66. A lower male positioning member 106 protrudes from the second face 112 of the left side spacer 62, res. respectively of the second face 112 of the intermediate struts 64, and forms a protruding rim which surrounds one of the two elements 98, respectively the lower female members 100, in a closed contour. A male positioning element upper 108 protrudes from the second face 112 of the left lateral strut 62, respectively intermediate struts 64, and also forms a protruding flange which surrounds the second member 98, respectively the upper female members 100, in a closed contour. The positioning elements 106 and 108 of the same spacer 62, 64 are spaced from each other, one being located in the lower part of the spacer concerned, the other in the upper part. It is the same for the elements 98. In the same way, a lower female positioning element 102 projects from the first face 110 of the right lateral strut 66, or intermediate struts 64 respectively, and forms a salient rim which surrounds one of the two male elements 98, respectively of the female elements 100, in a closed contour. An upper female positioning element 104 protrudes from the first face 110 of the right lateral spacer 66, respectively intermediate struts 64, and also forms a protruding flange which surrounds the second male clipping element 98, respectively the second female element 100 , according to a closed contour. The positioning elements 102 and 104 of the same spacer 64, 66 are spaced from one another, one being located in the lower part of the spacer concerned, the other in the upper part. It is the same for the elements 100. The projecting flanges of the elements 102, 104, 106 and 108 extend parallel to the axis X10, so that the elements 102 and 104 fit respectively with the elements 106 and 108. in the axial direction X10. The flange of the element 104 has a thickness e104, measured parallel to the axis X10, whose value is less but close to that of the sum of the thicknesses e32 and e54. Similarly, the flange of the element 102 has a thickness e102, measured parallel to the axis X10. The thickness e102 is also smaller and close to the sum of the thicknesses e32 and e54. For example, the thickness e104, as well as the thickness e102, is 11.5 mm. Axial play is provided between the nested members 104 and 108 and between the nested members 102 and 106. The lever spacers 62, 64 and 66 are thus positioned relative to each other by means of clipping link means 98 and 100 of two adjacent lever spacers, including a lateral spacer, as well as by intermediate positioning elements 102, 104, 106 and 108 of two adjacent lever spacers. The set of lever spacers 62, 64 and 66, levers 32 and axial stops 54 is positioned axially on the shaft 10 by means of:
  • two reinforcing rings 103, arranged around the shaft 10 on either side of the stack of spacers 62, 64 and 66, in this case respectively bearing against the spacers 62 and 66,
  • at least one elastic washer 105, of conical shape, mounted around the shaft 10 bearing against one of the reinforcing washers 103, so as to axially press each reinforcing washer 103 against the spacer 62 or 66 concerned and against axial stop 54 housed in the spacer 62 or 66 concerned, so that all the spacers 62, 64 and 66 are held axially between the two reinforcing rings 103,
  • at least one catch ring 107, mounted around the shaft 10, the spring washer 105 being interposed between the ring 107 and the reinforcing washer 103, the axial length of the catch ring 107 corresponding to the axial length of the fixed spacers 68 of the machine 2, to occupy the axial space left free along the shaft 10 for mounting any additional output levers,
  • two stop rings 109, mounted around the shaft, between which are mounted the spacers 62, 64 and 66, the washers 103 and 105 and the catch ring 107, and
  • two axial fastening means 111, constituting axial stops, of the circlip type, fixed on the shaft 10 to maintain axially along the shaft 10 the struts 62, 64 and 68, the washers 103 and 105 and the rings 107 and 109.

La présence de la rondelle élastique 105 permet de rattraper les jeux axiaux entre leviers 32 et butées axiales 54.The presence of the elastic washer 105 makes it possible to make up the axial clearances between levers 32 and axial stops 54.

En pratique, les rondelles de renfort 103 sont rigides, d'une épaisseur d'environ 2 à 3 mm, et d'un diamètre extérieur supérieur au diamètre extérieur des butées axiales 54. Chaque rondelle 103 est logée dans un logement ménagé dans l'entretoise latérale 62 ou 66 adjacente, de façon coaxiale à l'ouverture 96. En pratique, ce logement est formé par un muret cylindrique 113 qui fait saillie de la face 110 de l'entretoise 62 et de la face 112 de l'entretoise 66, respectivement, et qui est coaxial avec l'ouverture 96. La rondelle 103 rigidifie ainsi les entretoises 62 et 66, et donc l'empilement d'entretoises 62, 64 et 66.In practice, the reinforcing washers 103 are rigid, with a thickness of about 2 to 3 mm, and with an outside diameter greater than the outside diameter of the axial stops 54. Each washer 103 is housed in a housing formed in the housing. lateral spacer 62 or 66 adjacent, coaxially with the opening 96. In practice, this housing is formed by a cylindrical wall 113 which projects from the face 110 of the spacer 62 and the face 112 of the spacer 66 , respectively, and which is coaxial with the opening 96. The washer 103 thus stiffens the struts 62 and 66, and thus the stack of struts 62, 64 and 66.

D'autres moyens de liaison des entretoises de levier entre elles peuvent être mis en œuvre, par exemple des moyens de liaison par vissage ou emboîtement. La hauteur des rebords, mesurée parallèlement à l'axe X10, des éléments 102, 104, 106 et 108 permet, après mise en chevauchement en configuration empilée de deux entretoises de levier consécutives en parties supérieure et inférieure, de délimiter un espace axial interstitiel entre les corps 94 de deux entretoises consécutives, de sorte que la deuxième face 112 du premier des deux corps 94 est située à une distance de la première face 110 du deuxième des deux corps 94 qui est supérieure à l'épaisseur e32 du levier 32 disposés entre ces deux faces.Other means for connecting the lever spacers between them can be implemented, for example connection means by screwing or interlocking. The height of the rims, measured parallel to the axis X10, of the elements 102, 104, 106 and 108 makes it possible, after overlapping in a stacked configuration of two consecutive lever spacers in the upper and lower parts, to delimit an interstitial axial space between the bodies 94 of two consecutive spacers, so that the second face 112 of the first of the two bodies 94 is located at a distance from the first face 110 the second of the two bodies 94 which is greater than the thickness e32 of the lever 32 disposed between these two faces.

Sur une même entretoise intermédiaire 64, les éléments 102 et 104 sont respectivement disposés dos à dos avec les éléments 106 et 108.On the same intermediate spacer 64, the elements 102 and 104 are respectively arranged back to back with the elements 106 and 108.

Pour les entretoises 64 et 66, un bord d'ouverture 114 fait saillie de la première face 110 et relie les deux éléments 102 et 104 entre eux. Le bord 114 est en retrait axial, selon l'axe X10, par rapport aux éléments 102 et 104, qui sont donc plus saillants que ce dernier. De la même façon, pour les entretoises 62 et 64, un bord d'ouverture 116, de profil similaire au bord 114, fait saillie de la deuxième face 112 et relie les deux éléments 106 et 108 entre eux. Le bord 116 est en retrait axial, selon l'axe X10, par rapport aux éléments 106 et 108, qui sont donc plus saillants que ce dernier. Lorsque les entretoises 62, 64 et 68 sont emboitées, les bords 114 et 116 sont donc distants l'un de l'autre avec un écartement mesuré parallèlement à l'axe X10 supérieur à l'épaisseur e32. Les leviers 32 peuvent ainsi être librement mus entre deux entretoises de levier 62, 64 et 66 consécutives. Les bords d'ouverture 114 et 116 s'étendent entre l'arbre X10 et le volume extérieur V en configuration montée des entretoises sur l'arbre 10, et présentent un profil courbe, inclus dans un plan orthogonal à l'axe X10, ce profil courbe étant bombé en direction de l'extérieur de la machine 2 de façon à contourner l'ouverture 96.For the struts 64 and 66, an opening edge 114 projects from the first face 110 and connects the two members 102 and 104 together. The edge 114 is recessed axially, along the axis X10, relative to the elements 102 and 104, which are therefore more prominent than the latter. Similarly, for the spacers 62 and 64, an opening edge 116, similar in profile to the edge 114, projects from the second face 112 and connects the two elements 106 and 108 between them. The edge 116 is axially recessed, along the axis X10, relative to the elements 106 and 108, which are therefore more salient than the latter. When the spacers 62, 64 and 68 are nested, the edges 114 and 116 are therefore spaced from each other with a spacing measured parallel to the axis X10 greater than the thickness e32. The levers 32 can thus be freely moved between two lever spacers 62, 64 and 66 consecutive. The opening edges 114 and 116 extend between the shaft X10 and the external volume V in the mounted configuration of the spacers on the shaft 10, and have a curved profile, included in a plane orthogonal to the axis X10. curved profile being curved towards the outside of the machine 2 so as to bypass the opening 96.

Pour chacune des entretoises 64 et 66, le bord 114 délimite avec les éléments 102 et 104 une demi-ouverture droite à travers l'entretoise 64, 66. De la même façon, pour chacune des entretoises 62 et 64, le bord 116 délimite avec les éléments 106 et 108 une demi-ouverture gauche à travers l'entretoise 64, 62. Une fois les entretoises 62, 64 et 66 empilées avec les leviers 32 sur l'arbre commun 10, des ouvertures 118 à travers l'empilement d'entretoises 62, 64, 66 sont formées chacune par l'association de l'une des demi-ouvertures droite et l'une des demi-ouvertures de gauche en regard. Ces ouvertures 118 sont disposées entre les parties supérieures et les parties inférieures des entretoises 66, 64, 62. Les entretoises 62, 64 et 66 se chevauchent deux à deux le long de l'axe X10 par emboîtement et recouvrement partiel le long de l'axe X10 des éléments 102, 104, 106 et 108 pour délimiter les ouvertures 118. Chaque levier 32, et en espèce son corps 34, passe au travers d'une seule des ouvertures 118, de sorte que chaque ouverture 118 reçoit un unique levier 32. En l'espèce, le corps 34 passe entre les éléments de positionnement 102, 104, 106, 108 et entre les bords 114 et 116. Une barrière d'étanchéité 120, décrite ci-après, est montée au sein de l'ouverture 118 afin de définir un contour intérieur C de l'ouverture 118 le long de laquelle la barrière 120 est en contact étanche avec le levier 32. La barrière d'étanchéité 120 est interposée entre l'ensemble 30 de l'enveloppe extérieure de la machine 2 et le levier 32. Ce contour intérieur C entoure un seul levier 32 et épouse la périphérie de ce dernier. Ainsi, l'élément 104, 108 est placé en regard de la tranche 46, l'élément 102, 106 en regard de la tranche 48, le bord 114 en regard du flanc 42 et le bord 116 en regard du flanc 40 du levier, à une distance de jeu. La distance de jeu prévue entre l'élément de positionnement 104 et la tranche 46, ainsi que entre l'élément de positionnement 102 et la tranche 48, est maintenue constante en dépit de l'oscillation du levier 32 autour de l'axe X10, grâce à la forme d'arc de cercle coaxial avec l'axe X10 des surfaces courbes 56 et 58 positionnées respectivement à hauteur des éléments 104 et 102.For each of the struts 64 and 66, the edge 114 defines with the elements 102 and 104 a half-opening right through the spacer 64, 66. Similarly, for each of the struts 62 and 64, the edge 116 delimits with the elements 106 and 108 a left half-opening through the spacer 64, 62. Once the spacers 62, 64 and 66 stacked with the levers 32 on the common shaft 10, openings 118 through the stack of spacers 62, 64, 66 are each formed by the combination of one of the half openings right and one of the half openings left facing. These openings 118 are disposed between the upper parts and the lower parts of the spacers 66, 64, 62. The struts 62, 64 and 66 overlap in pairs along the axis X10 by interlocking and partial overlapping along the X10 axis of the elements 102, 104, 106 and 108 to define the openings 118. Each lever 32, and in particular its body 34, passes through only one of the openings 118, so that each opening 118 receives a single lever 32 In this case, the body 34 passes between the positioning elements 102, 104, 106, 108 and between the edges 114 and 116. A sealing barrier 120, described below, is mounted within the opening 118 to define an inner contour C of the opening 118 along which the barrier 120 is in sealing contact with the lever 32. The sealing barrier 120 is interposed between the assembly 30 the outer casing of the machine 2 and the lever 32. This inner contour C surrounds a single lever 32 and marries the periphery of the latter. Thus, the element 104, 108 is placed facing the wafer 46, the element 102, 106 opposite the wafer 48, the edge 114 facing the flank 42 and the edge 116 opposite the flank 40 of the lever, at a play distance. The clearance distance provided between the positioning element 104 and the wafer 46, as well as between the positioning element 102 and the wafer 48, is kept constant despite the oscillation of the lever 32 around of the axis X10, thanks to the arcuate shape coaxial with the axis X10 of the curved surfaces 56 and 58 respectively positioned at the height of the elements 104 and 102.

Chaque ouverture 118 est bordée par la barrière d'étanchéité 120 qui est en contact étanche avec le levier 32 qui traverse l'ouverture 118 en question. Chaque barrière 120 est en contact étanche avec un seul levier de sortie 32 pour une meilleure adaptation de la barrière 120 au contour externe de ce levier 32. L'ensemble des barrières d'étanchéité 120 empêche toute fuite de lubrifiant du volume intérieur V vers l'extérieur de la machine 2 à travers les ouvertures 118 et est logée dans le sous-ensemble formé par les entretoises 62, 64 et 66, qui constitue une partie de l'enveloppe extérieure de la machine 2.Each opening 118 is bordered by the sealing barrier 120 which is in sealing contact with the lever 32 which passes through the opening 118 in question. Each barrier 120 is in sealing contact with a single outlet lever 32 for better adaptation of the barrier 120 to the outer contour of this lever 32. The set of sealing barriers 120 prevents any leakage of lubricant from the interior volume V to the door. outside the machine 2 through the openings 118 and is housed in the subassembly formed by the spacers 62, 64 and 66, which constitutes a part of the outer casing of the machine 2.

Chaque barrière 120 comprend préférentiellement deux joints d'étanchéité 124 et 122 représentés à part aux figures 7 et 8, ce qui simplifie la mise en place de la barrière 120 au contact du levier 32 lors du montage du levier 32 sur l'arbre 10 et simplifie la réalisation de la barrière 120. Les parties 124 et 122 sont distinctes et rapportées l'une sur l'autre pour former la barrière 120. Les parties 124 et 122 sont formées de deux joints d'étanchéité distincts, préférentiellement en élastomère. La première partie 122 de chaque barrière 120 est prévue en surface de la première face 110 d'une entretoise 64 ou 66, comme visible à la figure 4. En pratique, la première partie 122 de chaque barrière 120 est montée dans un logement 128 ménagé dans la première face 110, le logement 128 formant une rainure qui s'étend depuis l'élément 102 jusqu'à l'élément 104, le long du bord d'ouverture 114. La deuxième partie 124 de chaque barrière 120 est, quant à elle, prévue en surface de la deuxième face 112 d'une entretoise 62 ou 64, en étant montée dans un logement 126 ménagé dans la deuxième face 112, le logement 126 formant une rainure qui s'étend depuis l'élément 106 jusqu'à l'élément 108, le long du bord d'ouverture 116. Chaque entretoise 64 loge une première partie 122 de l'une des barrières 120 et une deuxième partie 124 d'une autre des barrières 120. Chaque barrière 120 est logée partiellement dans l'une et l'autre entretoise 64 qui sont disposées de part et d'autre du levier 32 avec lequel la barrière 120 est en contact. L'entretoise 62 loge donc la deuxième partie 122 d'une des barrières 120. L'entretoise 66 loge donc la première partie 124 d'une des barrières 120. Tel qu'illustré à la figure 8, la première partie 122 comprend une première portion latérale 130 qui est destinée à être en contact étanche avec le flanc 42 du levier 32 par l'intermédiaire de trois lèvres 134A de la barrière 120 qui s'étendent tout le long de la portion 130. De même, la deuxième partie 124 illustrée à la figure 7 comprend une deuxième portion latérale 132 qui est destinée à être en contact étanche avec le flanc 40 du même levier 32 par l'intermédiaire de trois lèvres 134B de la barrière 120 qui s'étendent tout le long de la portion 132.Each barrier 120 preferably comprises two seals 124 and 122 shown separately in FIGS. Figures 7 and 8 , which simplifies the establishment of the barrier 120 in contact with the lever 32 during assembly of the lever 32 on the shaft 10 and simplifies the production of the barrier 120. The parts 124 and 122 are separate and reported one on the other to form the barrier 120. The parts 124 and 122 are formed of two separate seals, preferably elastomer. The first part 122 of each barrier 120 is provided on the surface of the first face 110 of a spacer 64 or 66, as visible in FIG. figure 4 . In practice, the first portion 122 of each barrier 120 is mounted in a housing 128 formed in the first face 110, the housing 128 forming a groove extending from the element 102 to the element 104, along the opening edge 114. The second portion 124 of each barrier 120 is, for its part, provided on the surface of the second face 112 of a spacer 62 or 64, being mounted in a housing 126 formed in the second face 112, the housing 126 forming a groove extending from the element 106 to the element 108, along the opening edge 116. Each spacer 64 houses a first portion 122 of one of the barriers 120 and a second part 124 of another of the barriers 120. Each barrier 120 is partially housed in the one and the other spacer 64 which are disposed on either side of the lever 32 with which the barrier 120 is in contact. The spacer 62 thus houses the second part 122 of one of the barriers 120. The spacer 66 thus houses the first portion 124 of one of the barriers 120. As illustrated in FIG. figure 8 the first portion 122 comprises a first lateral portion 130 which is intended to be in sealing contact with the flank 42 of the lever 32 via three lips 134A of the barrier 120 which extend all along the portion 130. Similarly, the second part 124 illustrated in figure 7 comprises a second lateral portion 132 which is intended to be in sealing contact with the flank 40 of the same lever 32 via three lips 134B of the barrier 120 which extend all along the portion 132.

La première portion latérale 130 s'étend tout le long du logement 128 au sein de ce dernier, suit la courbure du bord 114 et se poursuit par une portion radiale supérieure 142, monobloc avec la première portion latérale 130, qui fait saillie de la première face 110 en direction de l'entretoise 62 ou 64 adjacente. La portion radiale supérieure 142 s'étend le long de l'élément 104, à une extrémité supérieure 147 de la portion 130, et est logée au sein d'une encoche 145 de l'élément 104. Quatre lèvres 140A s'étendent le long de la portion radiale supérieure 142, trois de ces lèvres 140A prolongeant sans discontinuité les trois lèvres 134A. La portion radiale supérieure 142 est en contact étanche avec la tranche supérieure 46 du levier 32 par l'intermédiaire des lèvres 140A. La portion radiale 142 relie la portion latérale 130 de la barrière 120 à la portion latérale 132 de la barrière 120 au niveau de leurs extrémités supérieures. La deuxième portion latérale 132 présente ainsi un profil sensiblement plan parallèle au plan P32, c'est-à-dire que la portion latérale 132 s'étend dans un plan et suit la courbure du bord 116. La deuxième portion latérale 132 comprend une extrémité supérieure 148 qui est en contact dans la direction axiale avec la portion radiale supérieure 142 de la première portion latérale 130 et une extrémité inférieure 146. Trois des lèvres 140A prolongeant sans discontinuité les trois lèvres 134B. La portion radiale 142 est disposée dans la continuité de la portion latérale 130 et dans la continuité de la portion latérale 132. Ainsi, la barrière 120 est continue et en contact étanche avec le levier 32 entouré par deux entretoises de levier, depuis la portion latérale 130 vers la portion radiale 142 et de la portion radiale 142 vers la portion latérale 132, de manière continue, par l'intermédiaire des lèvres 134A, 140A et 134B qui sont disposées dans la continuité les unes des autres au contact du levier 32. La barrière 120 forme au moins un U continu renversé, qui s'étend autour du levier 32, et en particulier autour de la tranche supérieure 46. La barrière 120 empêche toute fuite de lubrifiant depuis le volume intérieur V vers l'extérieur, entre l'ensemble 30 et le levier 32, sur l'étendue continue de la barrière d'étanchéité 120.The first lateral portion 130 extends along the housing 128 within the latter, follows the curvature of the edge 114 and continues with an upper radial portion 142, integral with the first lateral portion 130, which projects from the first face 110 towards the spacer 62 or 64 adjacent. The upper radial portion 142 extends along the element 104, at an upper end 147 of the portion 130, and is housed within a notch 145 of the element 104. Four lips 140A extend along of the upper radial portion 142, three of these lips 140A continuously extending the three lips 134A. The upper radial portion 142 is in sealing contact with the upper edge 46 of the lever 32 via the lips 140A. The radial portion 142 connects the lateral portion 130 of the barrier 120 to the lateral portion 132 of the barrier 120 at their upper ends. The second lateral portion 132 thus has a substantially plane profile parallel to the plane P32, that is to say that the lateral portion 132 extends in a plane and follows the curvature of the edge 116. The second lateral portion 132 comprises one end upper 148 which is in contact in the axial direction with the upper radial portion 142 of the first lateral portion 130 and a lower end 146. Three of the 140A lips continuously extending the three lips 134B. The radial portion 142 is disposed in the continuity of the lateral portion 130 and in the continuity of the lateral portion 132. Thus, the barrier 120 is continuous and in sealing contact with the lever 32 surrounded by two lever spacers, from the lateral portion. 130 to the radial portion 142 and the radial portion 142 to the lateral portion 132, continuously through the lips 134A, 140A and 134B which are arranged in continuity with each other in contact with the lever 32. Barrier 120 forms at least one inverted continuous U which extends around the lever 32, and in particular around the upper edge 46. The barrier 120 prevents any leakage of lubricant from the interior volume V towards the outside, between the together 30 and the lever 32, on the continuous extent of the sealing barrier 120.

Selon un aspect optionnel de l'invention, la portion latérale 130, 132 couvre une fraction seulement de la longueur du bord d'ouverture 114 ou 116 associé de l'ouverture 118.According to an optional aspect of the invention, the lateral portion 130, 132 covers only a fraction of the length of the opening edge 114 or 116 associated with the opening 118.

Selon un aspect optionnel de l'invention, la portion latérale 130 se poursuit, à une autre extrémité 145, par une portion radiale inférieure 136, monobloc avec la portion latérale 130, qui fait saillie de la face 110 en direction de l'entretoise 62 ou 64 adjacente. La portion radiale inférieure 136 est logée dans une encoche 143 de l'élément 102 et comprend quatre lèvres 140B dont trois prolongent les lèvres 134A sans discontinuité. La portion radiale inférieure 136 est en contact étanche avec la tranche inférieure 48 par l'intermédiaire des lèvres 140B. En outre, une extrémité inférieure 146 de la deuxième portion latérale 132 est en contact dans la direction axiale avec la portion radiale inférieure 136 de la première portion latérale 130 avec les lèvres 134B qui prolongent sans discontinuité trois lèvres 140B.According to an optional aspect of the invention, the lateral portion 130 continues, at another end 145, by a lower radial portion 136, integral with the lateral portion 130, which projects from the face 110 in the direction of the spacer 62 or 64 adjacent. The lower radial portion 136 is housed in a notch 143 of the element 102 and comprises four lips 140B, three of which extend the lips 134A without discontinuity. The lower radial portion 136 is in sealing contact with the lower edge 48 via the lips 140B. In addition, a lower end 146 of the second lateral portion 132 is in contact in the axial direction with the lower radial portion 136 of the first lateral portion 130 with the lips 134B which continuously extend three lips 140B.

Ainsi, la barrière 120 est également en contact étanche de manière continue le long de la tranche inférieure 48 du levier 32 avec la portion radiale inférieure 136 qui est disposée dans la continuité de la première portion latérale 130 et avec la portion radiale inférieure 136 qui est disposée dans la continuité de la deuxième portion latérale 132, de sorte que la barrière 120 est continue et en contact étanche de manière continue sur toute la périphérie d'une section de ce levier 32 délimitée par les tranches 46, 48 et les flancs 40 et 42 par l'intermédiaire des lèvres 134A, 140A, 134B et 140B qui sont disposées dans la continuité les unes des autres le long de la périphérie du levier 32.Thus, the barrier 120 is also in continuous sealing contact along the lower edge 48 of the lever 32 with the lower radial portion 136 which is arranged in the continuity of the first lateral portion 130 and with the lower radial portion 136 which is disposed in the continuity of the second lateral portion 132, so that the barrier 120 is continuous and in continuous sealing contact over the entire periphery of a section of the lever 32 delimited by the slices 46, 48 and the flanks 40 and 42 through the lips 134A, 140A, 134B and 140B which are arranged in continuity with each other along the periphery of the lever 32.

En variante, la portion latérale 130 et la portion radiale inférieure 136 sont disposées dans la continuité l'une de l'autre de même que les portions radiale inférieure 136 et latérale 132, de manière à former une barrière 120, formant un O continu, ou pour le moins un U continu en contact avec le levier 32, qui s'étend autour du levier 32, en particulier autour de la tranche inférieure 48 du levier.As a variant, the lateral portion 130 and the lower radial portion 136 are arranged in continuity with one another as well as the lower radial and lateral 136 and 132 portions, so as to form a barrier 120, forming a continuous O, or at least one continuous U in contact with the lever 32, which extends around the lever 32, in particular around the lower edge 48 of the lever.

Les rondelles de renfort 103 assurent que les entretoises 62, 64, 66 adjacentes sont en appui l'une contre l'autre, dans la direction axiale, par l'intermédiaire de la barrière 120 et du levier 32 qui sont interposés entre les deux entretoises concernées, de sorte que la barrière 120 est elle-même mise en appui étanche contre les flancs 40 et 42 du levier 32 qu'elle entoure par ces deux entretoises et contre les deux entretoises concernées, ce qui garantit l'étanchéité.The reinforcement washers 103 ensure that the adjacent struts 62, 64, 66 bear against each other, in the axial direction, through the barrier 120 and the lever 32 which are interposed between the two spacers. concerned, so that the barrier 120 is itself sealed against the flanks 40 and 42 of the lever 32 that it surrounds these two spacers and against the two spacers concerned, which ensures sealing.

En configuration de tissage, lorsque chaque levier 32 oscille autour de l'axe X10 dans le plan P32 associé, le levier 32 glisse au contact de la barrière d'étanchéité 120, les portions radiales 134, 136 restant en contact étanche avec les tranches 46, 48 du levier et les portions latérales 130, 132 restant en contact étanche avec les flancs 40, 42.In the weaving configuration, when each lever 32 oscillates around the axis X10 in the associated plane P32, the lever 32 slides in contact with the sealing barrier 120, the radial portions 134, 136 remaining in sealing contact with the slices 46, 48 of the lever and the lateral portions 130, 132 remaining in sealing contact with the sidewalls 40, 42.

Lorsque la barrière 120 est en contact étanche sur toute une périphérie du levier 32 pendant l'oscillation du levier 32, on garantit l'absence de fuite au niveau de toute l'ouverture 118 traversée par le levier 32.When the barrier 120 is in sealing contact over an entire periphery of the lever 32 during the oscillation of the lever 32, it ensures no leakage at the entire opening 118 traversed by the lever 32.

Les au moins deux lèvres juxtaposées 134A, 134B, 140A, 140B sur chaque portion de la barrière 120 garantissent un contact de la barrière 120 avec le levier 32 même si celui-ci se déforme en cours de tissage.The at least two juxtaposed lips 134A, 134B, 140A, 140B on each portion of the barrier 120 ensure a contact of the barrier 120 with the lever 32 even if it deforms during weaving.

On comprend que les surfaces courbes 56 et 58, par leur forme circulaire centrée sur l'axe X10, assurent un maintien du contact étanche entre le levier 32 et les portions radiales 136 et 142, quelle que soit la position d'un levier 32 autour de l'axe X10 en configuration de tissage.It will be understood that the curved surfaces 56 and 58, by their circular shape centered on the axis X10, ensure a maintenance of the sealed contact between the lever 32 and the radial portions 136 and 142, whatever the position of a lever 32 around of the X10 axis in weaving configuration.

En variante, chaque joint 122 et 124 ne présente qu'une lèvre, la lèvre du premier joint étant disposée en continuité de la lèvre portée par le deuxième joint.Alternatively, each seal 122 and 124 has only one lip, the lip of the first seal being disposed in continuity with the lip carried by the second seal.

En variante, la deuxième partie 124 de la barrière 120 est pourvue de portions radiales similaires aux portions radiales supérieure 142 et inférieure 136, en contact étanche avec la tranche supérieure 46, respectivement la tranche inférieure 48, pour relier la première portion latérale 130 à la deuxième portion latérale 132.In a variant, the second portion 124 of the barrier 120 is provided with radial portions similar to the upper and lower radial portions 142 and 136, in sealing contact with the upper edge 46, respectively the lower edge 48, for connecting the first lateral portion 130 to the second lateral portion 132.

Selon une autre variante, la première partie 122 peut être dépourvue de portions radiales 136 et 142 si la deuxième partie 124 en est pourvue.According to another variant, the first portion 122 may be devoid of radial portions 136 and 142 if the second portion 124 is provided.

En tout état de cause, la portion latérale 130, la portion latérale 132, la portion radiale 136 et/ou la portion radiale 147 sont disposées deux à deux dans la continuité les unes des autres de sorte que la barrière 120 est continue, et est en contact du levier 32 de manière continue depuis le premier flanc 42 vers le deuxième flanc 40, par l'intermédiaire d'au moins une tranche 46 et/ou 48 du levier 32.In any event, the lateral portion 130, the lateral portion 132, the radial portion 136 and / or the radial portion 147 are arranged two by two in continuity with each other so that the barrier 120 is continuous, and is in contact with the lever 32 continuously from the first sidewall 42 towards the second sidewall 40, via at least one edge 46 and / or 48 of the lever 32.

La barrière 120 comprend en outre un ergot supérieur 152 qui fait saillie de l'extrémité supérieure 148 de la deuxième partie 124 selon une direction axiale parallèle à l'axe X10 et qui est logé dans une encoche 138 de l'élément 108 de l'entretoise 62 ou 64. De la même façon, l'extrémité inférieure 146 inclut un ergot inférieur 150 qui fait saillie de la portion latérale 132 dans la même direction que l'ergot supérieur 152, c'est-à-dire à l'écart de la face 112. L'extrémité inférieure 146 est logée dans une encoche 144 ménagée dans l'élément 106. La première partie 122 est quant à elle pourvue d'une cavité supérieure 156 de réception de l'ergot 152, la cavité axiale supérieure 156 présentant une forme complémentaire à cet ergot 152 et étant prévue dans la portion radiale supérieure 142. De la même façon, une cavité axiale inférieure 154 de réception de l'ergot inférieur 150 est prévue au sein de la portion radiale inférieure 136. La cavité inférieure 154 présente une forme complémentaire à celle de l'ergot inférieur 150. Les ergots 150 et 152 forment ainsi des moyens mâles qui peuvent être mis en place respectivement dans les cavités axiales 154 et 156, lesquelles forment des moyens femelles. Ces moyens mâles et femelles constituent des moyens d'emboîtement de la première partie 122 avec la deuxième partie 124 de la barrière 120 lorsque les deux entretoises 62, 64, 66 adjacentes qui portent les parties 122 et 124 d'une même barrière 120 sont assemblées l'une avec l'autre dans la direction axiale X10. En particulier, l'ergot 152 et la cavité 156 constituent un premier moyen d'emboîtement, alors que l'ergot 150 et la cavité 154 constituent un deuxième moyen d'emboîtement. Lorsque les parties 122 et 124 de la barrière 120 sont connectées à l'aide de leurs moyens de connexion, par rapprochement des parties 122 et 124 dans la direction axiale, les deux parties 122 et 124 de la barrière 120 sont dans la continuité l'une de l'autre, ce qui se produit lorsque deux entretoises 62, 64 et 66 adjacentes sont assemblées l'une avec l'autre, à l'aide de leurs moyens de clipsage 98, 100 ou moyens d'emboitement 102, 104, 106, 108.The barrier 120 further comprises an upper pin 152 which protrudes from the upper end 148 of the second portion 124 in an axial direction parallel to the axis X10 and which is housed in a notch 138 of the element 108 of the In the same way, the lower end 146 includes a lower pin 150 which projects from the lateral portion 132 in the same direction as the upper pin 152, that is to say, away of the face 112. The lower end 146 is housed in a notch 144 formed in the element 106. The first part 122 is provided with an upper cavity 156 for receiving the lug 152, the upper axial cavity 156 having a shape complementary to this lug 152 and being provided in the upper radial portion 142. In the same way, a lower axial cavity 154 receiving the lower lug 150 is provided within the lower radial portion 136. The lower cavity 154 has a shape complementary to that of the lower lug 150. The lugs 150 and 152 thus form male means that can be put in place. respectively in the axial cavities 154 and 156, which form female means. These male and female means constitute means for interlocking the first portion 122 with the second portion 124 of the barrier 120 when the two adjacent struts 62, 64, 66 carrying the portions 122 and 124 of the same barrier 120 are assembled. with each other in the axial direction X10. In particular, the lug 152 and the cavity 156 constitute a first interlocking means, while the lug 150 and the cavity 154 form a second interlocking means. When the parts 122 and 124 of the barrier 120 are connected by means of their connecting means, by bringing the parts 122 and 124 in the axial direction, the two parts 122 and 124 of the barrier 120 are in continuity with each other. one of the other, which occurs when two adjacent struts 62, 64 and 66 are assembled with each other, by means of their clipping means 98, 100 or interlocking means 102, 104, 106, 108.

En variante, les ergots et cavités décrits précédemment peuvent être inversés. Alternativement, la première partie 122 peut être dotée d'un ergot supérieur et d'une cavité inférieure correspondant respectivement à une cavité supérieure et à un ergot inférieur de la deuxième partie 124. On comprend que d'autres combinaisons d'ergots et de cavités sont envisageables.Alternatively, the lugs and cavities described above can be reversed. Alternatively, the first portion 122 may be provided with an upper lug and a lower cavity respectively corresponding to an upper cavity and a lower lug of the second portion 124. It is understood that other combinations of lugs and cavities are possible.

Chaque partie 122 et 124 est en contact étanche respectivement avec l'entretoise de levier 62, 64 ou 66 qui la loge, au niveau des logements 143, 128, 145, respectivement des logements 138, 126, 144.Each portion 122 and 124 is in sealing contact respectively with the lever spacer 62, 64 or 66 which houses it, at the housings 143, 128, 145, respectively housing 138, 126, 144.

En variante également, la barrière 120 peut être formée en une seule partie monobloc qui regroupe les deux parties 122 et 124 décrites précédemment. A l'inverse, la barrière 120 peut être formée par quatre parties distinctes connectées, formées par les portions 130, 132, 136 et 142, qui sont alors connectées par des moyens de connexion, par exemple incluant des ergots et des cavités tels que définis ci-avant et assurent la continuité du contact de la barrière 120 contre le levier 32. Par ailleurs, la barrière 120 peut être prévue solidaire du levier 32 et glissant contre l'ouverture 118.Alternatively also, the barrier 120 may be formed in one single piece which includes the two parts 122 and 124 described above. Conversely, the barrier 120 may be formed by four distinct connected parts, formed by the portions 130, 132, 136 and 142, which are then connected by connection means, for example including lugs and cavities as defined above and ensure the continuity of the contact of the barrier 120 against the lever 32. Furthermore, the barrier 120 may be provided integral with the lever 32 and sliding against the opening 118.

De manière générale, la barrière 120 est préférentiellement réalisée en élastomère. Toutefois, elle peut être formée par une tresse d'étanchéité en métal ou tout autre matériau approprié.In general, the barrier 120 is preferably made of elastomer. However, it can be formed by a sealing braid of metal or any other suitable material.

Les entretoises de levier 62, 64 et 66 sont chacune pourvues d'une patte d'extrémité 158 qui prolonge l'élément 104 et/ou l'élément 108 à l'opposé de l'axe X10. La patte d'extrémité 158 se termine par un bourrelet 160 à section en portion de cylindre à base circulaire, ce cylindre s'étendant le long d'un axe parallèle à l'axe X10. Chaque entretoise de levier 62, 64 et 66 est en appui dans une rainure 162 du profil supérieur 24, cette rainure 162 s'étendant parallèlement à l'axe X10 et étant ouverte en direction de l'intérieur de la fenêtre 14. Un joint d'étanchéité non illustré est optionnellement prévu au sein de la rainure 162. La forme du bourrelet 160 de la patte 158 autorise le déplacement de l'entretoise de levier 62, 64 ou 66 au sein de la rainure 162, ainsi qu'un changement d'orientation de cette entretoise autour d'un axe X160 du bourrelet 160 par rapport au profil supérieur 24 et donc par rapport au bâti 6. L'axe X160 est parallèle à l'axe X10. L'arbre 10 étant conçu pour évoluer entre une position de tissage et une position de nivelage distinctes, les entretoises de levier 62, 64 et 66 sont également déplacées entre une position de tissage et une position de nivelage, la patte d'extrémité 158 autorisant le déplacement de l'entretoise concernée entre cette position de tissage et cette position de nivelage tout en restant logée et en appui dans la rainure 162, tel qu'illustré aux figures 9 et 10. La partie de l'enveloppe extérieure formée par les entretoises de levier 62, 64 et 66 est ainsi mobile par rapport au bâti 6 entre la configuration de tissage et la configuration de nivelage. En l'espèce, la première face 110 de l'entretoise latérale gauche 62 coulisse le long du corps principal 90 de l'entretoise fixe 68 qui lui est adjacente, alors que la deuxième face 112 de l'entretoise latérale droite 66 coulisse le long du corps principal 90 de l'entretoise fixe 68 qui lui est adjacente. On garantit ainsi l'étanchéité du volume intérieur V de la machine 2 également en configuration de nivelage.The lever spacers 62, 64 and 66 are each provided with an end tab 158 which extends the element 104 and / or the element 108 away from the axis X10. The end flap 158 terminates in a flange 160 with a circular base portion of a cylinder, this cylinder extending along an axis parallel to the axis X10. Each lever spacer 62, 64 and 66 is supported in a groove 162 of the upper profile 24, this groove 162 extending parallel to the axis X10 and being open towards the inside of the window 14. A seal sealing not shown is optionally provided within the groove 162. The shape of the bead 160 of the lug 158 allows the displacement of the lever spacer 62, 64 or 66 within the groove 162, and a change of orientation of this spacer about an axis X160 of the bead 160 relative to the upper profile 24 and therefore relative to the frame 6. The axis X160 is parallel to the axis X10. Since the shaft 10 is designed to move between a distinct weaving position and a leveling position, the lever spacers 62, 64 and 66 are also moved between a weaving position and a leveling position, the end tab 158 allowing the displacement of the spacer concerned between this weaving position and this leveling position while remaining housed and supported in the groove 162, as illustrated in FIGS. Figures 9 and 10 . The portion of the outer shell formed by the lever spacers 62, 64 and 66 is thus movable relative to the frame 6 between the weave pattern and the leveling pattern. In this case, the first face 110 of the left lateral spacer 62 slides along the main body 90 of the fixed spacer 68 which is adjacent to it, while the second face 112 of the right lateral spacer 66 slides along the main body 90 of the fixed spacer 68 adjacent thereto. This ensures the tightness of the interior volume V of the machine 2 also in the leveling configuration.

Les entretoises de levier 62, 64 et 66 comprennent chacune une surface de glissement inférieure 164 qui s'étend perpendiculairement au corps 94 et parallèlement à l'axe X10. La surface de glissement 164 est préférentiellement formée par une partie de l'élément 102 ou 106 de l'entretoise concernée. La surface de glissement 164 est préférentiellement courbe de manière à pouvoir glisser contre le bourrelet 166 du profil inférieur 22, entre les configurations des figures 9 et 10. Par exemple, la surface 164 est circulaire. Le bourrelet 166 est optionnellement pourvu d'un joint d'étanchéité du contact avec les entretoises 62, 64, 66 et 68, qui s'étend parallèlement à l'axe X10. En position de tissage, les entretoises de levier 62, 64 et 66 sont chacune en appui sur le profil inférieur 22 par un talon 168 qui prolonge la surface de glissement inférieure 164, et est formé soit par l'élément 102 soit par l'élément 106. Le talon 168 est décollé du bourrelet 166 en position de nivelage telle qu'illustrée à la figure 10. Quelle que soit la configuration, la surface de glissement inférieure 164 reste en contact avec le bourrelet 166 de sorte qu'aucun passage pour l'huile n'est possible entre le profil inférieur 22 et les entretoises de levier 62, 64 et 66. Quelle que soit la configuration, la portion radiale supérieure 142 de la barrière 120, et/ou la portion radiale inférieure 136, restent en contact étanche avec le levier 32 et les portions latérales 130 et 132 restent en contact étanche avec le levier 32 de sorte que l'étanchéité de l'ouverture 118 est assurée en configuration de nivelage comme en configuration de tissage et entre ces deux configurations. Les entretoises 62, 64 et 66 adjacentes sont ainsi à la fois en appui dans la direction axiale avec un ou des leviers 32 adjacents par l'intermédiaire des barrières 120 et transversalement à la direction axiale avec le bâti 6, par l'intermédiaire de la patte d'extrémité 158 et du talon 168. La patte d'extrémité 158 et les éléments 104 et 108 forment une partie saillante supérieure, le talon 168 et les éléments 102 et 106 forment une partie saillante inférieure.The lever spacers 62, 64 and 66 each include a lower sliding surface 164 which extends perpendicular to the body 94 and parallel to the axis X10. The sliding surface 164 is preferably formed by a part of the element 102 or 106 of the spacer concerned. The sliding surface 164 is preferably curved so as to slide against the bead 166 of the lower profile 22, between the configurations of the Figures 9 and 10 . For example, the surface 164 is circular. The bead 166 is optionally provided with a seal of the contact with the spacers 62, 64, 66 and 68, which extends parallel to the axis X10. In the weaving position, the lever spacers 62, 64 and 66 are each supported on the lower profile 22 by a heel 168 which extends the lower sliding surface 164, and is formed either by the element 102 or by the element 106. The heel 168 is detached from the bead 166 in the leveling position as illustrated in FIG. figure 10 . Whatever the configuration, the lower sliding surface 164 remains in contact with the bead 166 so that no passage for the oil is possible between the lower profile 22 and the spacers In any configuration, the upper radial portion 142 of the barrier 120, and / or the lower radial portion 136, remain in sealing contact with the lever 32 and the lateral portions 130 and 132 remain in position. sealing contact with the lever 32 so that the sealing of the opening 118 is provided in the leveling configuration as in weaving configuration and between these two configurations. The spacers 62, 64 and 66 adjacent are thus both supported in the axial direction with one or more levers 32 adjacent through the barriers 120 and transversely to the axial direction with the frame 6, via the end flap 158 and heel 168. End flap 158 and elements 104 and 108 form an upper projection, heel 168 and elements 102 and 106 form a lower projection.

Les entretoises 62, 64 et 66 et les leviers 32 étant maintenus axialement entre les rondelles de renfort 103 et les moyens de fixation 111, l'étanchéité et la continuité du contact entre les barrières 120 et les leviers 32 associés sont assurées, en configuration de tissage comme en configuration de nivelage.The spacers 62, 64 and 66 and the levers 32 being held axially between the reinforcing washers 103 and the fixing means 111, the sealing and the continuity of the contact between the barriers 120 and the associated levers 32 are ensured, in the configuration of FIG. weaving as in leveling configuration.

De préférence, les entretoises latérales 62 et 66 comprennent chacune un rebord de recouvrement 89 qui fait saillie de leur corps principal 94 respectif et qui s'étend parallèlement à l'arbre commun 10, au-dessus du bord d'ouverture 114 ou 116 et à l'écart de l'ouverture 96. En l'espèce, le rebord 89 de l'entretoise latérale gauche 62 fait saillie à partir de la première face 110, alors que le rebord 89 de l'entretoise latérale droite 66 fait saillie de la deuxième face 112. Ainsi, le rebord 89 de chacune des entretoises latérales 62 et 66 s'étend tout le long de l'entretoise latérale 62, 66 depuis la partie supérieure jusqu'à la partie inférieure de l'entretoise latérale 62, 66 et s'étend dans la direction axiale X10 jusqu'à l'entretoise fixe 68 adjacente pour recouvrir le rebord interne 92 de cette dernière, en configuration de tissage. Le rebord 89 est disposé à l'extérieur du rebord interne 92, c'est-à-dire à l'opposé du volume interne V par rapport au rebord interne 92. Lors du déplacement du sous-ensemble 62, 64 et 66 vers la position de nivelage, les rebords 89 sont déplacés à distance du rebord interne 92 associé. Lors du déplacement du sous-ensemble 62, 64 et 66 depuis la position de nivelage à la position de tissage, les rebords 89 reviennent en recouvrement des rebords 92.Preferably, the lateral struts 62 and 66 each comprise a covering flange 89 which protrudes from their respective main body 94 and which extends parallel to the common shaft 10, above the opening edge 114 or 116 and away from the opening 96. In the present case, the rim 89 of the left lateral strut 62 protrudes from the first face 110, while the rim 89 of the right lateral strut 66 protrudes from the second face 112. Thus, the rim 89 of each of the lateral struts 62 and 66 extends all along the lateral strut 62, 66 from the upper part to the lower part of the lateral strut 62, 66 and extends in the axial direction X10 to the adjacent fixed spacer 68 to cover the inner flange 92 of the latter, in the weaving configuration. The flange 89 is disposed outside the internal rim 92, that is to say opposite to the internal volume V with respect to the internal rim 92. During the displacement of the subassembly 62, 64 and 66 towards the leveling position, the flanges 89 are moved away from the associated inner flange 92. When moving the subassembly 62, 64 and 66 from the leveling position to the weaving position, the flanges 89 return to overlap the flanges 92.

Un jeu axial e92 entre une entretoise 64 et une entretoise 68 adjacente, avec le rebord 89 recouvrant le rebord 92 associé permet à l'arbre commun 10 équipé des entretoises levier 62, 64, 66 et des leviers 32 d'être mis en place librement dans la machine.An axial clearance e92 between a spacer 64 and an adjacent spacer 68, with the flange 89 covering the associated flange 92, enables the common shaft 10 equipped with the lever spacers 62, 64, 66 and levers 32 to be freely fitted. in the machine.

Néanmoins, au moins en configuration de tissage, toutes les entretoises 62, 64, 66 et 68 adjacentes de la machine 2 se chevauchent deux à deux le long de l'axe X10 au moins en parties supérieure et inférieure des entretoises, à la manière d'écailles, avec les leviers 32 au niveau des ouvertures 118 rendues étanches par les barrières 120, de sorte que l'ensemble 30 forme une couverture modulaire. Les rebords 86 des entretoises 68, les rebords de 102, 104, 106, 108 des entretoises 62, 64, 66, les rebords de recouvrement 89 des entretoises 62, 66, les plaques latérales 70 délimitent un sous-ensemble de l'enveloppe extérieure de la machine 2 au niveau de la fenêtre 14. Seules les ouvertures 118 permettent le passage d'un élément interne de la machine, en l'espèce les leviers 32, vers l'extérieur de la machine 2 au sein de la fenêtre 14.Nevertheless, at least in the weaving configuration, all the adjacent struts 62, 64, 66 and 68 of the machine 2 overlap in pairs along the axis X10 at less at the top and bottom of the spacers, in the manner of scales, with the levers 32 at the openings 118 sealed by the barriers 120, so that the assembly 30 forms a modular cover. The flanges 86 of the struts 68, the flanges 102, 104, 106, 108 of the struts 62, 64, 66, the cover flanges 89 of the struts 62, 66, the side plates 70 delimit a subset of the outer envelope of the machine 2 at the window 14. Only the openings 118 allow the passage of an internal element of the machine, in this case the levers 32, towards the outside of the machine 2 within the window 14.

L'ensemble des barrières 120 est ainsi logé dans un sous-ensemble de l'enveloppe extérieure qui est formé par les entretoises 62, 64 et 66 et qui est fixe par rapport au bâti 6 lorsque la machine à cames 2 est en configuration de tissage et lorsque les leviers de sortie 32 sont en mouvement d'oscillation alternatif autour de l'arbre commun 10, et qui est déplacé vers une position de nivelage en configuration de nivelage.All the barriers 120 are thus housed in a subset of the outer casing which is formed by the spacers 62, 64 and 66 and which is fixed relative to the frame 6 when the cam machine 2 is in the weaving configuration. and when the output levers 32 are in alternating oscillation movement about the common shaft 10, and which is moved to a leveling position in the leveling configuration.

La description qui est faite de la barrière 120, ainsi que de l'ouverture 118 s'applique de préférence à tous les leviers 32 de la machine 2. Cependant, à titre de variante, une seule ou certaines des ouvertures 118 et une seule ou certaines des barrières 120 décrites précédemment peuvent être mises en place sur la machine 2, les autres leviers 32 étant équipés de moyens d'étanchéité différents.The description that is made of the barrier 120, as well as the opening 118 applies preferably to all the levers 32 of the machine 2. However, as a variant, only one or some of the openings 118 and one or some of the barriers 120 described above can be put in place on the machine 2, the other levers 32 being equipped with different sealing means.

Chaque entretoise de levier 62, 64 et 66 est préférentiellement obtenue par injection plastique, incluant les logements 143, 128, 145, ou respectivement 138, 126, 144, formés lors de l'injection.Each lever spacer 62, 64 and 66 is preferably obtained by plastic injection, including the housing 143, 128, 145, or respectively 138, 126, 144, formed during the injection.

Selon un premier mode de fabrication, chaque joint 122 et 124 de la barrière d'étanchéité 120 est réalisé par moulage et ensuite rapporté dans les logements 143, 128, 145, respectivement 138, 126, 144.According to a first method of manufacture, each seal 122 and 124 of the sealing barrier 120 is made by molding and then returned to the housings 143, 128, 145, respectively 138, 126, 144.

Selon un deuxième mode de fabrication alternatif, chaque joint 122 et 124 est surmoulé en étant en prise dans les logements 143, 128, 145, ou 138, 126, 144, concernés de l'entretoise 62, 64 ou 66 concernée. Chaque entretoise 62, 64 ou 66, et le(s) joint(s) avec lequel (lesquels) elle est associée, forme alors un ensemble, préférentiellement indissociable, qui présente sensiblement les mêmes géométries que l'entretoise et le(s) joint(s) rapportés obtenus dans le premier mode de fabrication. En l'espèce, l'entretoise 62, 64 ou 66 reste à distance de jeu du ou des leviers 32 adjacents alors que le joint surmoulé 122 ou 124 est au contact du levier 32. Chaque joint surmoulé présente soit des ergots 150, 152 soit des cavités 154, 156. Les joints ne sont pas prévus pour être démontés, voire ne sont pas démontables, mais restent identifiables par rapport aux entretoises 62, 64 et 66, en se différenciant de ces dernières par un matériau différent.According to a second alternative manufacturing method, each seal 122 and 124 is overmolded by being engaged in the housing 143, 128, 145, or 138, 126, 144, of the spacer 62, 64 or 66 concerned. Each spacer 62, 64 or 66, and the joint (s) with which it is associated, then forms an assembly, preferably inseparable, which has substantially the same geometries as the spacer and the joint (s) (s) reported obtained in the first mode of manufacture. In this case, the spacer 62, 64 or 66 remains at play clearance of the lever or levers 32 adjacent while the overmolded seal 122 or 124 is in contact with the lever 32. Each overmolded seal has either lugs 150, 152 or cavities 154, 156. The seals are not intended to be disassembled, or even are not removable, but remain identifiable with respect to to the spacers 62, 64 and 66, differing from the latter by a different material.

Une machine 1002 de type ratière est illustrée aux figures 11 et 12 et constitue un deuxième mode de réalisation conforme à l'invention. Les éléments similaires entre la machine 1002 et la machine 2 sont référencés sur les figures 11 et 12 avec les mêmes numéros de référence que dans les figures 1 à 10, augmentés de 1000.A dobby type machine 1002 is illustrated in FIGS. figures 11 and 12 and constitutes a second embodiment according to the invention. Similar elements between the machine 1002 and the machine 2 are referenced on the figures 11 and 12 with the same reference numbers as in the Figures 1 to 10 , increased by 1000.

La machine 1002 comprend ainsi des leviers de sortie 1032 avec un premier flanc 1042 et un deuxième flanc 1040 ainsi qu'une tranche inférieure 1048 et une tranche supérieure 1046. La machine 1002 comprend également un arbre commun 1010 sur lequel sont montés les leviers 1032. La machine 1002 comprend également un moyen d'entraînement des leviers 1032 selon un mouvement d'oscillation alternatif autour de l'arbre commun 1010. Comme cela est connu en tant que tel dans le cas des ratières rotatives, ces moyens d'entraînement incluent pour chaque levier 1032 des éléments d'actionnement 1170 qui sont montés sur un arbre principal 1172 connecté à un arbre d'entrée non représenté. Sous l'action de la rotation de l'arbre principal 1172, et lorsqu'accouplés par un dispositif de sélection non représenté à un organe excentrique 1173 de la bielle 1174, les éléments d'actionnement 1170 entraîne le levier 1032 en oscillation, par l'intermédiaire d'une bielle 1174. Chaque bielle 1174 entraîne l'un des leviers 1032 par l'intermédiaire d'une liaison pivot 1176 sur le corps 1034, dont l'axe X1176 est parallèle à l'axe central X1010 de l'arbre 1010. Les éléments d'actionnement 1170, l'arbre principal 1172 et les bielles 1174 forment des moyens d'entraînement des leviers 1032. Les moyens d'entraînement des leviers 1032, l'arbre principal 1172 et l'arbre commun 1010 sont disposés dans un volume intérieur V de la machine 1002 délimité par un bâti 1006 et une enveloppe extérieure 1030 comprenant un capot 1012 avec une fenêtre 1014 que traversent les leviers 1032.The machine 1002 thus comprises output levers 1032 with a first sidewall 1042 and a second sidewall 1040 and a lower edge 1048 and an upper edge 1046. The machine 1002 also comprises a common shaft 1010 on which the levers 1032 are mounted. The machine 1002 also comprises means for driving the levers 1032 in an alternating oscillation movement around the common shaft 1010. As is known as such in the case of rotary dobbies, these drive means include each lever 1032 of the actuating elements 1170 which are mounted on a main shaft 1172 connected to a not shown input shaft. Under the action of the rotation of the main shaft 1172, and when coupled by a not shown selection device to an eccentric member 1173 of the connecting rod 1174, the actuating elements 1170 drives the lever 1032 in oscillation, by means of 1174. Each connecting rod 1174 drives one of the levers 1032 via a pivot connection 1176 on the body 1034, whose axis X1176 is parallel to the central axis X1010 of the shaft. 1010. The actuating elements 1170, the main shaft 1172 and the rods 1174 form drive means of the levers 1032. The drive means of the levers 1032, the main shaft 1172 and the common shaft 1010 are arranged in an interior volume V of the machine 1002 defined by a frame 1006 and an outer envelope 1030 comprising a cover 1012 with a window 1014 through which the levers 1032.

La machine 1002 comprend également des entretoises de levier 1064 qui sont toutes identiques les unes aux autres et sont montées les unes à côté des autres selon l'axe longitudinal X1010 de l'arbre 1010 dans la fenêtre 1014. Chaque entretoise 1064 est traversée par une ouverture 1096 par l'intermédiaire de laquelle elle est montée autour d'une butée axiale 1054 elle-même montée autour de l'arbre 1010. Des éléments de liaison par emboîtement 1102 et 1104 permettent l'emboîtement le long de l'axe X1010 avec des éléments de liaison par emboîtement 1106, 1108 des entretoises adjacentes 1064 pour un chevauchement le long de l'axe X1010 en partie supérieure des entretoises 68 et un positionnement des entretoises 1064 entre elles. Les éléments 1108 et 1104 délimitent une partie saillante supérieure de chaque entretoise 1064 en contact avec le bâti 1006 ou le capot 1012 de la machine 1002. Chaque entretoise 1064 présente deux talons inférieurs 1065 et 1067 pour appui sur le bâti 1006. Les entretoises 1064 adjacentes sont en appui sur le bâti 1006 par l'intermédiaire de leurs talons 1065 et 1067, qui reposent respectivement sur des éléments de support 1006A et 1006B du bâti 1006. De préférence, les éléments 1102 et 1106 font saillie axialement des deux talons 1065 et 1067, de part et d'autre de ces derniers.The machine 1002 also comprises lever spacers 1064 which are all identical to each other and are mounted next to each other along the longitudinal axis X1010 of the shaft 1010 in the window 1014. Each spacer 1064 is traversed by a opening 1096 through which it is mounted around an axial stop 1054 itself mounted around the shaft 1010. Interlocking connection elements 1102 and 1104 allow the interlocking along the axis X1010 with interlocking connecting members 1106, 1108 adjacent struts 1064 for overlap along the X1010 axis at the top of the struts 68 and positioning the struts 1064 therebetween. The elements 1108 and 1104 delimit an upper projecting portion of each spacer 1064 in contact with the 1006 frame or the cover 1012 of the machine 1002. Each spacer 1064 has two lower heels 1065 and 1067 for resting on the frame 1006. The adjacent struts 1064 rest on the frame 1006 via their heels 1065 and 1067, which are respectively based on support members 1006A and 1006B of the frame 1006. Preferably, the elements 1102 and 1106 protrude axially from the two heels 1065 and 1067, on either side of the latter.

Les entretoises 1064, butées axiales 1054 et leviers 1032 sont empilés sur l'arbre commun 1010 et maintenus axialement entre deux moyens de fixation axiaux non représentés.The spacers 1064, axial stops 1054 and levers 1032 are stacked on the common shaft 1010 and held axially between two unrepresented axial fastening means.

Le talon 1065, le talon 1067 et les éléments 1102 et 1106 qui font saillie à partir de ces derniers forment une partie saillante inférieure de l'entretoise 1064, qui est à la fois en appui sur le bâti 1006 et en chevauchement le long de l'axe X1010 des parties inférieures respectives des entretoises 1064 adjacentes.The heel 1065, the heel 1067 and the elements 1102 and 1106 which project from them form a lower projecting part of the spacer 1064, which is at the same time resting on the frame 1006 and overlapping along the frame. X1010 axis of the respective lower portions of the adjacent struts 1064.

Chaque entretoise 1064 présente également deux bords d'ouverture 1114 et 1116, les bords 1114 et 1116 délimitant un corps principal 1090 entre les moyens 1102 et 1104, respectivement 1106 et 1108. Les bords 1116 et 1114 font saillie respectivement des faces opposées 1110 et 1112 de chaque entretoise 1064. Les bords 1114 et 1116 sont interposés entre l'arbre 1010 et l'extérieur de la machine 1002. Chaque entretoise 1064 comprend également un évidement 1178 autorisant le libre débattement de la bielle 1174 associée à chaque levier 1032.Each spacer 1064 also has two opening edges 1114 and 1116, the edges 1114 and 1116 delimiting a main body 1090 between the means 1102 and 1104, respectively 1106 and 1108. The edges 1116 and 1114 respectively project opposite faces 1110 and 1112. of each spacer 1064. The edges 1114 and 1116 are interposed between the shaft 1010 and the outside of the machine 1002. Each spacer 1064 also comprises a recess 1178 allowing the free movement of the connecting rod 1174 associated with each lever 1032.

Les entretoises 1064 forment ainsi chacune deux demi-ouvertures délimitées par, respectivement, le bord d'ouverture 1114, l'élément 1104 et l'élément 1102, et par le bord 1116, l'élément 1106 et l'élément 1108. Comme cela est visible à la figure 11, les deux demi-ouvertures forment une ouverture 1118 par mise en appui d'une entretoise 1064 contre son entretoise adjacente 1064. L'ouverture 1118 s'étend ainsi autour de l'un des leviers 1032, chaque levier 1032 traversant ainsi l'enveloppe extérieure de la machine 1002 à travers l'une des ouvertures 1118. Une barrière d'étanchéité 1120 en deux parties 1122 et 1124 est en contact étanche avec les entretoises 1064 qui entourent le levier 1032 et le levier 1032 au sein de l'ouverture 1118. Les parties 1124 et 1122 sont formées de deux joints d'étanchéité distincts, préférentiellement en élastomère. Chaque entretoise 1064 disposée longitudinalement entre deux leviers 1032 reçoit ainsi une première partie 1122 et une deuxième partie 1124 de deux barrières 1120 différentes, sur chaque face 1110 et 1112 opposées. La première partie 1122 comporte une portion latérale 1130 et deux portions radiales inférieure 1188 et supérieure 1186. La deuxième partie 1124 comporte une portion latérale 1132. La partie 1122 logée dans une première entretoise 1064 est connectée à une deuxième partie 1124 logée dans une deuxième entretoise 1064 adjacente pour former une barrière d'étanchéité 1120. A cet effet, la partie 1122 est pourvue d'une cavité axiale supérieure 1156 ménagée au niveau de la portion radiale qui coopère avec un ergot supérieur 1152 de la partie 1124 qui s'étend selon la direction X1010 en extrémité supérieure de la portion latérale 1132 pour connecter les deux parties ensemble. La partie 1122 comprend également une cavité axiale inférieure 1154 ménagée au niveau de la portion radiale 1188 qui se connecte à un ergot inférieur non visible aux figures de la partie 1124 ménagé en extrémité inférieure de la portion latérale 1132. Les ergots 1152 et les cavités 1154 et 1156 forment ainsi des moyens de connexion des deux parties 1122 et 1124 d'une même barrière 1120 par emboîtement dans la direction axiale X1010. Lorsque les entretoises 1064 sont empilées avec les leviers 1032, les parties 1122 et 1124 des barrières 1120 sont emboîtées. Chacune des portions radiales de la première partie 1122 est alors disposée dans la continuité de la portion latérale 1132 et de la portion latérale 1130 de la même barrière d'étanchéité 1120. Les portions latérales 1130 et 1132 sont en contact étanche avec le flanc 1040, respectivement avec le flanc 1042 et les portions radiales 1186 et 1188 sont en contact étanche avec la tranche supérieure 1046 de chacun des leviers 1032, respectivement la tranche inférieure 1048 au niveau d'une surface courbe 1056, respectivement une surface courbe 1058, à section en forme d'arc de cercle coaxial avec l'axe X10 de l'arbre commun 1010. Ainsi la barrière d'étanchéité 1120 glisse tout en restant en contact étanche tout autour du levier 1132 lors de l'oscillation du levier 1132 autour de l'axe X1010.The spacers 1064 thus each form two half-openings defined by, respectively, the opening edge 1114, the element 1104 and the element 1102, and by the edge 1116, the element 1106 and the element 1108. Like this is visible at the figure 11 , the two half-openings form an opening 1118 by bearing a spacer 1064 against its adjacent spacer 1064. The opening 1118 thus extends around one of the levers 1032, each lever 1032 thus passing through the envelope The exterior of the machine 1002 through one of the openings 1118. A two-part sealing barrier 1120 1122 and 1124 is in sealing contact with the spacers 1064 surrounding the lever 1032 and the lever 1032 within the opening 1118. Parts 1124 and 1122 are formed of two separate seals, preferably of elastomer. Each spacer 1064 arranged longitudinally between two levers 1032 thus receives a first portion 1122 and a second portion 1124 of two different barriers 1120, on each face 1110 and 1112 opposite. The first portion 1122 has a lateral portion 1130 and two lower radial portions 1188 and 1186. The second portion 1124 has a lateral portion 1132. The portion 1122 housed in a first spacer 1064 is connected to a second portion 1124 housed in a second spacer 1064 adjacent to form a sealing barrier 1120. For this purpose, the portion 1122 is provided with an upper axial cavity 1156 formed at the radial portion which cooperates with an upper lug 1152 of the portion 1124 which extends in the direction X1010 at the upper end of the side portion 1132 to connect the two parts together. The portion 1122 also comprises a lower axial cavity 1154 formed at the radial portion 1188 which connects to a lower notch not visible in the figures of the portion 1124 formed at the lower end of the lateral portion 1132. The lugs 1152 and the cavities 1154 and 1156 thus form means for connecting the two parts 1122 and 1124 of the same barrier 1120 by interlocking in the axial direction X1010. When the spacers 1064 are stacked with the levers 1032, the parts 1122 and 1124 of the barriers 1120 are nested. Each of the radial portions of the first portion 1122 is then arranged in the continuity of the lateral portion 1132 and the lateral portion 1130 of the same sealing barrier 1120. The lateral portions 1130 and 1132 are in sealing contact with the sidewall 1040, respectively with the flank 1042 and the radial portions 1186 and 1188 are in sealing contact with the upper edge 1046 of each of the levers 1032, respectively the lower edge 1048 at a curved surface 1056, respectively a curved surface 1058, with a cross section. arcuate shape coaxial with the axis X10 of the common shaft 1010. Thus the sealing barrier 1120 slides while remaining in sealing contact all around the lever 1132 during the oscillation of the lever 1132 around the X1010 axis.

Les portions latérales 1130, 1132 sont munies de plusieurs lèvres 1134 et les portions radiales 1186 et 1188 sont respectivement munies de plusieurs lèvres 1140A et 1140B, respectivement disposées parallèles les unes aux autres et par lesquelles chaque portion de la barrière 1120 est au contact du levier 1032. Lorsque les deux parties 1122 et 1124 sont disposées dans la continuité l'une de l'autre, au moins une lèvre 1134 se prolonge par au moins une lèvre 1140 sans discontinuité. Ainsi la barrière d'étanchéité 1120 est continue et en contact étanche de manière continue sur toute la périphérie d'une section du levier 1032.The lateral portions 1130, 1132 are provided with a plurality of lips 1134 and the radial portions 1186 and 1188 are respectively provided with a plurality of lips 1140A and 1140B, respectively arranged parallel to one another and by means of which each portion of the barrier 1120 is in contact with the lever 1032. When the two parts 1122 and 1124 are arranged in the continuity of one another, at least one lip 1134 is extended by at least one lip 1140 without discontinuity. Thus the sealing barrier 1120 is continuous and in continuous sealing contact over the entire periphery of a section of the lever 1032.

Par ailleurs, sur une même entretoise 1064, les deux portions radiales supérieures des deux barrières 1120 de la machine 1002 coopèrent entre elles par des moyens de connexion similaires, qui traversent longitudinalement le corps 1090 de l'entretoise 1064 interposée entre les deux barrières 1120 concernées. En pratique, la partie 1122 montée sur l'entretoise 1064 comprend un ergot supérieur 1180 qui est emboîté dans une cavité supérieure 1182 de la partie 1124 montée sur la même entretoise 1064. De la même manière, les deux parties 1122 et 1124 des deux barrières 1120 de la machine 1002 adjacentes coopèrent entre elles grâce à un ergot inférieur 1184 de la partie 1122 qui est emboîté dans une cavité inférieure non visible aux figures de la partie 1124 montée sur la même entretoise 1064 à travers le corps 1090 de l'entretoise 1064 interposée entre les deux barrières 1120 concernées. L'ergot supérieur 1180 et la cavité supérieure 1156 sont orientés dans des directions opposées l'une de l'autre. L'ergot inférieur 1184 et la cavité inférieure 1154 sont également orientés dans des directions opposées l'une de l'autre. De la même façon, la cavité supérieure 1182 et l'ergot supérieur 1152 sont orientés dans des directions opposées l'une de l'autre. La cavité inférieure, non visible, de la portion radiale inférieure de la partie 1122 et l'ergot inférieur 1150 sont orientés dans des directions opposées l'une de l'autre. La barrière étanche de la machine 1002 comprend ainsi des moyens de connexion des barrières 1120 entre elles dans la direction axiale X10 ce qui permet de limiter l'encombrement des entretoises autour des barrières 1120. La première et la deuxième partie 1122, 1124 de chaque barrière 1120, comme dans le premier mode de réalisation décrit ci-avant, ne sont en contact étanche qu'avec un seul levier 1032 ce qui garantit un placement optimal de la barrière 1120 au contact du levier 1032. Les différents modes de réalisation et variantes décrits dans ce qui précède peuvent être combinés pour créer de nouveaux modes de réalisation.Moreover, on the same spacer 1064, the two upper radial portions of the two barriers 1120 of the machine 1002 cooperate with each other by similar connecting means, which pass longitudinally through the body 1090 of the spacer 1064 interposed between the two barriers 1120 concerned. . In practice, the portion 1122 mounted on the spacer 1064 comprises an upper pin 1180 which is fitted into an upper cavity 1182 of the portion 1124 mounted on the same spacer 1064. Of the same In this way, the two parts 1122 and 1124 of the two adjacent barriers 1120 of the machine 1002 cooperate with each other thanks to a lower lug 1184 of the part 1122 which is fitted into a lower cavity which is not visible in the figures of the part 1124 mounted on the same spacer. 1064 through the body 1090 of the spacer 1064 interposed between the two barriers 1120 concerned. Upper lug 1180 and upper cavity 1156 are oriented in opposite directions from each other. Lower lug 1184 and lower cavity 1154 are also oriented in opposite directions from each other. In the same way, the upper cavity 1182 and the upper lug 1152 are oriented in opposite directions from each other. The lower, non-visible cavity of the lower radial portion of the portion 1122 and the lower pin 1150 are oriented in opposite directions from each other. The sealed barrier of the machine 1002 thus comprises means for connecting the barriers 1120 to each other in the axial direction X10, which makes it possible to limit the space requirement of the spacers around the barriers 1120. The first and the second part 1122, 1124 of each barrier 1120, as in the first embodiment described above, are in sealing contact only with a single lever 1032 which ensures optimal placement of the barrier 1120 in contact with the lever 1032. The various embodiments and variants described in the above can be combined to create new embodiments.

Claims (15)

  1. A shedding machine (2; 1002), of the rack or cam mechanism type, for a weaving machine, the machine comprising:
    - output levers (32; 1032) that each comprise a first flank (42; 1042), a second flank (40; 1040), a first edge (46; 1046) connecting the first flank to the second flank and a second edge (48; 1048) opposite the first edge and connecting the first flank to the second flank,
    - a shared shaft (10; 1010), on which the output levers are mounted, and defining a longitudinal axis (X10; X1010),
    - means (4, 8, 52; 1170, 1172, 1174) for driving the output levers in an alternating oscillating movement around the shared shaft (10; 1010),
    - an outer enclosure (12, 30; 1012, 1030), which is traversed by the output levers,
    - a frame (6, 1006), which defines, with the outer enclosure, an inner volume (V) of the machine, and
    - at least one first sealing barrier (120; 1120) inserted between the outer enclosure and a first lever from among the output levers (32; 1032),
    the first sealing barrier (120; 1120) is in tight contact with the first lever over the entire periphery of the first lever and comprises:
    - a first radial portion (142; 1186), which is in tight contact with one from among the first edge (46; 1046) and the second edge (48; 1048) of the first lever,
    - a second radial portion (136; 1188) which is in tight contact with the second edge (48; 1048) of the first lever,
    - a first side portion (130; 1130), which is in tight contact with the first flank (42; 1042) of the first lever and which is arranged in the continuation of each of the two radial portions, and
    - a second side portion (132; 1132), which is in tight contact with the second flank (40; 1040) of the first lever, and which is arranged in the continuation of each of the two radial portions.
    and the first sealing barrier (120; 1120) is housed in the outer enclosure (12, 30), which is stationary relative to the frame (6) of the machine when the output levers (32; 1032) are in alternating oscillating motion around the shared shaft (10; 1010), the first radial portion (142; 1186) of the first sealing barrier being in tight contact with a curved surface (56; 1056) of the first edge (46; 1046) and the second radial portion (136; 1188) of the first sealing barrier being in tight contact with a curved surface (58; 1058) of the second edge (48; 1048), each of the curved surfaces being with an arc of circle-shaped section coaxial to the longitudinal axis (X10, X1010) defined by the shared shaft (10; 1010).
  2. The shedding machine (2; 1002) according to claim 1, characterized in that the first sealing barrier (120; 1120) comprises at least a first sealing gasket (122; 1122) and a second sealing gasket (124; 1124) that constitute two separate parts, the first sealing gasket comprising the first side portion (130; 1130), the second sealing gasket comprising the second side portion (132; 1132), each of the two radial portions (136; 142; 1186, 1188) connecting the first sealing gasket and the second sealing gasket.
  3. The shedding machine (2; 1002) according to claim 2, characterized in that the first sealing gasket (122; 1122) comprises:
    - the first radial portion (142; 1186), and
    - the second radial portion (136; 1188),
    in that the first radial portion and the second radial portion are a single piece with the first side portion (130; 1130).
  4. The shedding machine (2; 1002) according to claim 3, characterized in that the first sealing barrier (120; 1120) further comprises at least one first nesting means (156, 152; 1152, 1156) parallel to the longitudinal axis (X10; X1010) of an end (148) of the second seal (124; 1124) with the first radial portion (142; 1186) and a second nesting means (150, 154; 1184) parallel to the longitudinal axis (X10; X1010) of an end (146) of the second seal (124; 1124) with the second radial portion (136; 1188).
  5. The shedding machine (2; 1002) according to any one of claims 2 to 4, characterized in that a sealing barrier (120; 1120) with a first radial portion (142; 1186), a second radial portion (136; 1188), a first side portion (1130) and a second side portion (1132) is inserted between the outer enclosure (1012, 1030) and each of the output levers (1032).
  6. The shedding machine (1002) according to claim 5, characterized in that each radial position of each sealing barrier comprises nesting means in a direction parallel to the longitudinal axis (X1010) with the adjacent radial portion of another sealing barrier.
  7. The shedding machine (2; 1002) according to any one of the preceding claims, characterized in that each of the side (130, 132; 1130, 1132) and radial (136, 142; 1186, 1188) portions of the first sealing barrier (120; 1120) comprises at least two parallel lips (134A, 134B, 140A, 140B) by means of which the first sealing barrier is in tight contact with the first lever (32; 1032).
  8. The shedding machine (2; 1002) according to any one of the preceding claims, characterized in that the outer enclosure (12, 30) comprises a cover (12; 1012) and spacers (62, 64, 66, 68; 1064), juxtaposed along the longitudinal axis (X10; X1010) in a window (14; 1014) of the cover (12; 1012) whereof at least a first lever spacer (62, 64; 1064) and a second lever spacer (64, 66; 1064) that are adjacent and arranged on either side of the first lever (32; 1032), the first sealing barrier (120; 1120) being partially housed in the first lever spacer and partially housed in the second lever spacer.
  9. The shedding machine (2; 1002) according to claim 8, characterized in that the lever spacers (62, 64, 66; 1064) include two side lever spacers (62, 66), in that the lever spacers and the output levers (32) are maintained along the longitudinal axis (X10, X1010) between the two axial fastening means (111) fixed on the shared shaft (10; 1010) and in that the machine comprises two reinforcing washers (103), each reinforcing washer (103) being arranged along the longitudinal axis, between one of the fastening means and one of the side lever spacers (62, 66), each reinforcing washer bearing against one of the side lever spacers (62, 66).
  10. The shedding machine (2; 1002) according to any one of claims 8 or 9, characterized in that it comprises axial stops (54; 1054) with rolling elements mounted around the shared shaft (10; 1010), the output levers (32; 1032) each being inserted between two of the axial stops, and in that each lever spacer (62, 64, 66; 1064) comprises a passage opening (96; 1096) of the shared shaft, with a substantially circular shape centered on the longitudinal axis (X10; X1010), each passage opening receiving one of the axial stops.
  11. The shedding machine (2; 1002) according to any one of claims 8 to 10, characterized in that at least two of the adjacent lever spacers along the longitudinal axis (X10) comprise means (98, 100) for securing one with the other in a direction parallel to the longitudinal axis (X10).
  12. The shedding machine (2) according to any one of claims 8 to 11, characterized in that it is of the cam mechanism type and in that the machine is designed to evolve between a first weaving configuration, in which the output levers (32) are driven by the driving means, and a level adjustment configuration, in which the output levers (32) are uncoupled from the driving means, the evolution between the weaving configuration and the level adjustment configuration driving a movement of the lever spacers (62, 64, 66) relative to the frame (6).
  13. The shedding machine (2) according to claim 12, characterized in that the machine comprises a profile (24) secured to the frame (6), the profile having a slot that extends parallel to the longitudinal axis (X10), each lever spacer (62, 64, 66) comprising an end (158) that is movable in the slot between the weaving configuration and the level adjustment configuration.
  14. The shedding machine (2) according to one of claims 12 or 13, characterized in that the outer enclosure (12, 30) comprises at least a first stationary spacer (68) and a second stationary spacer (68), which are stationary relative to the frame (6) during the evolution of the machine between the weaving configuration and the level adjustment configuration, the lever spacers (62, 64, 66) arranged on either side of the output levers (32) being bordered along the longitudinal axis (X10) on one side by the first stationary spacer and on the other side by the second stationary spacer.
  15. The shedding machine (2; 1002) according to any one of claims 8 to 14, characterized in that the spacers have an upper part and a lower part and overlap in pairs along the longitudinal axis (X10, X1010) in the upper part and the lower part.
EP16196179.2A 2015-10-29 2016-10-28 Shedding machine Active EP3162933B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1560369A FR3043096B1 (en) 2015-10-29 2015-10-29 MOBILE TRAINING MACHINE

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EP3162933A1 EP3162933A1 (en) 2017-05-03
EP3162933B1 true EP3162933B1 (en) 2019-12-04

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EP (1) EP3162933B1 (en)
CN (1) CN106995964B (en)
FR (1) FR3043096B1 (en)
PT (1) PT3162933T (en)

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EP4095296A1 (en) * 2021-05-27 2022-11-30 Staubli Faverges Shedding machine

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FR3094725B1 (en) * 2019-04-03 2021-05-14 Staubli Lyon Jacquard link and mechanical link comprising such a link
FR3111361B1 (en) * 2020-06-11 2022-07-29 Staubli Sa Ets Cam weave mechanism follower roller output lever and method of manufacturing same, shedding machine equipped with such a lever and weaving loom equipped with such a machine

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CH627211A5 (en) * 1978-05-11 1981-12-31 Rueti Ag Maschf Treadle device for driving the heald frames of a weaving machine
DE8131638U1 (en) * 1981-10-29 1982-02-04 Stäubli AG, Horgen, Zürich TECHNICAL IMAGE MACHINE FOR WEAVING MACHINES
FR2552118B1 (en) 1983-09-21 1985-11-22 Staubli Sa Ets IMPROVEMENTS ON SETS OF DRAW LEVERS MOUNTED ON RAILS AND OTHER MECHANICS FOR THE FORMATION OF CROWD ON WEAVING MACHINES
FR2679264B1 (en) * 1991-07-15 1993-12-03 Staubli Ets PULLING MECHANISM WITH OSCILLATING LEVERS INTERPOSED BETWEEN AN ARMOR MECHANICS AND THE HANDLE FRAMES OF A WEAVE.
CH694020A5 (en) * 2000-03-01 2004-06-15 Agm Jactex Ag Shedding device for weaving machines.
DE10312118A1 (en) * 2003-03-17 2004-09-30 Picanol N.V. Shaft drive for a weaving machine
FR2972008B1 (en) * 2011-02-25 2013-03-29 Staubli Sa Ets SPACER AND LEVER SEPARATION SUB-ASSEMBLY OF A CROW-FORMING MACHINE, MACHINE COMPRISING SUCH A SUBASSEMBLY, AND MOUNTING METHOD

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4095296A1 (en) * 2021-05-27 2022-11-30 Staubli Faverges Shedding machine
FR3123366A1 (en) * 2021-05-27 2022-12-02 Staubli Faverges crowd forming machine

Also Published As

Publication number Publication date
FR3043096B1 (en) 2018-05-04
EP3162933A1 (en) 2017-05-03
CN106995964A (en) 2017-08-01
FR3043096A1 (en) 2017-05-05
CN106995964B (en) 2020-05-15
PT3162933T (en) 2020-02-17

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