EP3162935A1 - Shedding machine and weaving loom comprising such a shedding machine - Google Patents

Shedding machine and weaving loom comprising such a shedding machine Download PDF

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Publication number
EP3162935A1
EP3162935A1 EP16196171.9A EP16196171A EP3162935A1 EP 3162935 A1 EP3162935 A1 EP 3162935A1 EP 16196171 A EP16196171 A EP 16196171A EP 3162935 A1 EP3162935 A1 EP 3162935A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
duct
machine
pump
shaft
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.)
Granted
Application number
EP16196171.9A
Other languages
German (de)
French (fr)
Other versions
EP3162935B1 (en
Inventor
Joseph CITTADINI
David Bonneau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staubli Faverges SCA
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Staubli Faverges SCA
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Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP3162935A1 publication Critical patent/EP3162935A1/en
Application granted granted Critical
Publication of EP3162935B1 publication Critical patent/EP3162935B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/003—Devices for lubricating machine parts
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C13/00—Shedding mechanisms not otherwise provided for

Definitions

  • the present invention relates to a shedding machine for a loom, for example of the mechanical type cam or rotary dobby, and a loom comprising such a machine for forming the crowd.
  • 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.
  • the active lubrication of these mechanical elements as well as their cooling play a decisive role in maintaining the good functioning of the machine over time.
  • Lubrication reduces the friction of moving mechanical parts, removes heat created by friction and captures metal particles as well as any debris from the contact areas generated in the machine.
  • Lubrication also reduces operating noise and protects the parts against oxidation and corrosion.
  • the common shaft that supports the output levers is a critical area that must be particularly supplied with lubricant at startup and during operation of the machine.
  • Some known machines include lubrication systems that include hydraulic pumps and hoses to drive liquid lubricant to the shaft.
  • this solution has the disadvantage of using components reported on the frame of the machine, in particular pipes, whose positioning is not always guaranteed.
  • Hoses, which are flexible, are subject to leaks and mounting problems.
  • the assembly of the machine is also relatively complex because of the pipe connections to be made.
  • CN-Y-2,665,156 discloses a lubrication system for a shedding machine, including a piston pump.
  • the pump is connected with a distributor via an oil line.
  • the oil line can cause leaks and interfere with maintenance operations.
  • Some machines such as cam mechanisms are housed in a small space under the loom, which hinders maintenance operations, especially when the machine is abundantly provided with flexible hoses. Finally, the machine lacks adaptability when the machine must be configured for a given loom.
  • IT-B-1251843 discloses a rotating dobby which includes a pump for drawing lubricating oil contained at the bottom of a frame of the dobby.
  • the pump comprises a fixed curved guide with a plurality of oil capture chambers for supplying oil to a drive shaft of the machine via a through orifice of a first plate of the frame on which the element fixed is mounted.
  • the oil is brought and set in motion within the fixed guide by a smooth wheel that rotates nearby.
  • the circuit includes a filter line connected directly to a discharge port of the pump body, and a lubricant distribution conduit formed in a dobby shaft and directly connected to a suction port of the pump body.
  • the filter duct and the distribution duct are arranged between the first plate and a second plate of the frame of the machine.
  • This dobby has the disadvantage that the smooth wheel dipped in the oil from the bottom of the frame and thus occupies a large space.
  • the lever shaft is not lubricated.
  • the maintenance of the filter requires disassembly of the entire machine, insofar as it is mounted between two frames of the frame.
  • the invention aims to overcome the disadvantages of the prior art mentioned above, by proposing a new machine for forming the crowd particularly reliable, compact and easy to maintain.
  • the invention relates to a shedding machine for a loom, the shedding machine comprising oscillating output levers, which are rotatably mounted around a common shaft belonging to the machine. machine and which is mounted on a frame of the machine, the shedding machine comprising a lubrication system, which comprises a lubricant circuit, a delivery pump, lubricant circulation within the lubricant circuit, this pump comprising a pump body and at least one movable pumping member in the pump body, the pump body being provided with a lubricant suction channel, and a lubricant delivery channel, which is connected to a secondary conduit of the lubricant circuit, the secondary conduit being formed in the frame.
  • a lubrication system which comprises a lubricant circuit, a delivery pump, lubricant circulation within the lubricant circuit, this pump comprising a pump body and at least one movable pumping member in the pump body, the pump body being provided with a lubricant suction channel, and a
  • the lubrication system also comprises a lubricant dispensing member to at least one lubrication member of the machine, the dispensing member being connected to the secondary conduit of the lubricant circuit.
  • the lubricant suction channel is connected to a primary duct of the lubricant circuit, the primary duct being formed in the frame.
  • the suction channel is in facing relation and opens on the primary conduit and the discharge channel is in facing relation and opens on the secondary conduit.
  • the pump body is directly connected to the lubricant circuit via the frame, which avoids the implementation of flexible pipes, limits the risk of leakage, facilitates maintenance and manufacture of the machine.
  • the compactness of the machine is improved.
  • the invention also relates to a loom comprising a machine for forming the crowd as defined above, which forms a rotating dobby or a cam mechanism.
  • the machine 2 of training the crowd of figures 1 and 2 is intended to be integrated into a loom and is of the mechanical cam type.
  • the machine 2 comprises an input shaft 4 defining an axis X4, intended to be rotated about the axis X4 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 which is visible only to the figure 3 .
  • the shaft 8 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 shafts 4 and 8 are perpendicular between them, the shaft 4 comprising a drive wheel 10, of the conical gear type, engraining a receiving wheel 11, of the conical gear type, of the shaft 8.
  • the machine 2 also comprises a shaft 12 whose own axis X12 is parallel to the axis X8.
  • the frame 6 forms a lower support in the form of a tank and in this case comprises a bottom 14 and a peripheral wall 56 projecting upwards from the contour of the bottom 14.
  • the machine 2 also comprises a hood, not shown, which is removably mounted on the peripheral wall 56 of the frame 6 so as to close the latter from above.
  • the shafts 4, 8 and 12 are included between the bottom 14 and the not shown hood, which define an internal volume of the machine 2.
  • Lubricant of the oil type, is set in motion within this interior volume by a lubrication system of the machine 2 described below.
  • the frame 6 thus receives a quantity of lubricant which fills at least a fraction of the internal volume of the machine 2.
  • the machine 2 also comprises oscillating levers 16, also called “output levers”, which are rotatably mounted on the shaft 12, independently of each other, about the axis X12.
  • the shaft 12 forms a support shaft of the levers 16, common to these levers 16.
  • a single lever 16 is shown, the others being omitted.
  • the machine 2 comprises for example eight levers 16 mounted on the shaft 12 and arranged next to each other along the latter. In practice, the number of levers 16 mounted on the shaft 12 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.
  • the levers 16 each extend in a plane orthogonal to the axis X12 and are separated by axial stops 18 with rolling elements.
  • each of the stops 18 is interposed between two levers, except two of them which border the two lateral levers 16 of the group of levers 16. Moreover, each lever 16 comprises an extension 24 which passes through the not shown hood and extends to 2. The extensions 24 are connected to mechanical elements of the draw, not shown, to form the shed on the loom.
  • each lever 16 comprises two rollers 22 which are each rotatable about an axis X22 and compared to the lever 16 concerned.
  • the axes X22 are parallel to each other and parallel to the axis X12.
  • the rotating shaft 4 therefore drives the levers 16 in movement.
  • the frame 6 comprises a first plate 26 and a second plate 28 through which the common shaft 12 is supported on the frame 6.
  • the plates 26 and 28 project from the bottom 14 of the frame 6 and extend away from each other in respective planes P26 and P28 parallel to each other and perpendicular to the axis X12, as illustrated in FIG. figure 3 .
  • the plates 26 and 28 are mounted on the bottom 14 with screws.
  • a first portion 30 of the shaft 12 extends from the first plate 26 to the second plate 28 and a second portion 32 of the shaft 12 visible to the figure 3 extends from the second plate 28 in a direction opposite to the first plate 26.
  • a first end 34 of the shaft 12 is received in abutment against the plate 26, the first portion 30 of the shaft 12 starting from this first end 34.
  • the plate 26 comprises a recess 38 for receiving the shaft 12 visible at figures 4 , 6 and 7 in which the shaft 12 is supported by means of its first end 34.
  • the recess 38 has a U-shape, and comprises a bottom 40 and two parallel edges 42 which extend from the bottom 40 The edges 42 are disposed relative to each other at a distance which is greater than, and adjacent to, the diameter of the section of the shaft 12 defined at the end 34 of the latter.
  • the bottom 40 has a circular shape that extends the edges 42, to fit the periphery of the end 34.
  • the recess 38 extends in the plane P26 and defines a median axis X38 equidistant from the edges 42 and parallel to the latter, which is oriented obliquely with respect to a plane defined by the bottom 14.
  • the recess 38 is open in a direction parallel to the median axis X38, directed upwards and opposite the bottom 40.
  • the shaft 12 can slide in the recess 38 from a low position, called “weaving”, in which it bears against the bottom 40, to a high position, called “leveling” in which it is spaced from the bottom 40 and the shaft 8, and bears against one of the edges 42.
  • An intermediate section 36 of the shaft 12 bears on the plate 28.
  • This intermediate section 36 is located between the first part 30 and the second part 32.
  • the plate 28 comprises a recess 44 with a bottom 46 and parallel edges 48 which extend from the bottom 46, to receive the intermediate section 36 of the shaft 12 bearing against the plate 28, as visible at Figures 8 and 9 .
  • the recess 44 is also U-shaped.
  • the edges 48 are disposed relative to each other at a distance which is greater than, and adjacent to, the diameter of the section of the shaft 12 defined at the of the intermediate section 36 of the latter.
  • the bottom 44 has a circular shape that extends the edges 48, to fit the periphery of the intermediate section 36.
  • the recess 44 extends in the plane P28 and defines a median axis X44 equidistant from the edges 48, parallel to these and the X38 axis.
  • the recess 44 is open in a direction parallel to the median axis X44, directed upwards and opposite the bottom 46 and the shaft 8. In this way, the shaft 12 can slide in the recess 44 from the weaving position, in which it bears against the bottom 46, to the leveling position in which it is spaced from the bottom 46 and bears against one of the edges 48.
  • the common shaft 12 is mounted to move relative to the frame 6 between the weaving position and the leveling position, keeping its axis X12 parallel to the axis X8.
  • the orientation of the shaft 12 about its axis X12, relative to the frame 6 is also modified, as detailed in the following .
  • the machine 2 and thus designed to evolve between a weaving configuration represented in FIG. figure 8 , in which the shaft 12 is in the weaving position, and a leveling configuration, shown in FIG.
  • the plate 26 comprises a bearing 50 and the plate 28 a bearing 52 through which the shaft 8 is rotatably mounted about its axis X8 on the frame 6.
  • the toothed wheel 11 is mounted on one end 51 of the shaft 8, which extends after the bearing 50 opposite the bearing 52, in the direction of the axis X4.
  • the input shaft 4 is rotatably mounted about its axis X4 on the frame 6 via a third plate 54 and a side 60 of the peripheral wall 56.
  • the third plate 54 extends in a plane P54 which is perpendicular to planes P26 and P28.
  • the third plate 54 protrudes from the bottom 14 and is traversed by the shaft 4, the latter being mounted on the plate 54 by means of a bearing 58.
  • the plate 54 is mounted, for example, by screws on the bottom 14, or, alternatively, comes from material with the latter.
  • the side 60 of the peripheral wall 56 extends in a plane parallel to the plane P54 and located at a distance from the latter.
  • the plate 54 is disposed between the side 60 and a side 62 of the wall 56 which is opposite to the side 60 while being parallel to the latter.
  • the shaft 4 is rotatably mounted through the side 60 via a bearing 64 provided with sealing means to prevent leakage of lubricant from the internal volume of the machine 2.
  • the shaft 4 thus comprises a first part 66 which extends outside the machine 2 to the wall 60, a second part 68 which extends between the side 60 and the plate 54 and a third part 70 which is terminal and extends to from the plate 54 and on which the drive gear 10 is mounted integrally.
  • the lubrication system of the machine 2 comprises a pump 72, which circulates the lubricant in a lubricant circuit C2 of the machine 2 to a lubricant dispenser member to one or more lubrication members of the machine 2, for example the oscillating levers 16. The lubricant is then poured into the interior volume of the machine 2 to be pumped again by the pump 72.
  • the pump 72 which is shown alone at figure 10 , is a trochoid type hydraulic pump.
  • the pump 72 is driven by the input shaft 4 to put the lubricant in circulation in the circuit C2 and in the machine 2.
  • the pump 72 is traversed right through by the second portion 68 of the shaft 4 and is arranged between the plate 54 and the side 60 of the peripheral wall 56.
  • the pump 72 comprises in this case a pump body 74, visible in particular at the figure 10 which is secured to the bottom 14 of the frame 6, for example by being fixed by screws to the latter.
  • the pump body 74 projects from the bottom 14 and is generally planar in shape so as to define a plane P74 parallel to the plane P54 and orthogonal to the axis X4.
  • the shaft 4 passes through the body 74 via a circular orifice 76 of the latter, the circular orifice being centered on an axis orthogonal to the plane P74.
  • the pump body 74 is further provided with a suction channel 78 of the lubricant and a delivery channel 80 of the lubricant.
  • the channels 78 and 80 open respectively by a suction inlet 84 and a discharge port 86 at an inner face 82 of the pump body 74.
  • the inner face 82 itself extends in a plane parallel to the plane P74, the orifice 76 opening at the center of the inner face 82.
  • the gills 84 and 86 each have a circular arc shape centered on the axis X4 and are arranged opposite to each other, on either side of the orifice 76.
  • the discharge channel 80 is thus disposed on the side of the plates 26 and 28, while the suction channel 78 is disposed opposite.
  • the suction channel 78 and the discharge channel 80 also comprise, respectively, a suction duct 88 and a discharge duct 90.
  • the ducts 88 and 90 extend parallel to one another. other and in a plane that is parallel to plane P74.
  • the duct 88 connects the duct 84 to a lower suction opening 92 of the pump casing 74.
  • the discharge duct 90 connects the duct 86 to a lower discharge opening 94 of the pump casing 74.
  • the channel 78 is formed of the portions 84, 88 and 92
  • the channel 80 is formed of the portions 86, 90 and 94.
  • the openings 92 and 94 open on a lower face 96 of the pump body 74, which is in contact with the bottom 14 of the frame 6 when the pump body 74 is fixed by screw on the bottom 14.
  • an intermediate piece of the spacer type, is interposed between the pump 74 and the bottom 14, this intermediate piece being traversed by two ducts extending the openings 92 and 94 towards the bottom 14.
  • the pump 72 also comprises an inner rotor 98 and an outer rotor 100 which form movable pumping members in the pump body 74.
  • the inner rotor 98 is fixed on the shaft 4 and traversed by the latter via a central orifice 102 of the inner rotor 98.
  • the central orifice 102 comprises a flat portion 104 which cooperates with a flat portion 106 of the shaft 4 so as to fix in rotation the inner rotor 98 with respect to the shaft 4, around the X4 axis.
  • the rotor 98 is mounted against the inner face 82 of the pump body 74.
  • the inner rotor 98 is provided with a plurality of external teeth 108, in this example ten teeth 108, which are distributed over the outer circumference of the inner rotor 98, around the X4 axis.
  • the outer teeth 108 have a rounded profile.
  • the outer rotor 100 forms a ring which is mounted against the inner face 82 around the inner rotor 98.
  • the outer rotor 100 comprises a central orifice 112 towards the center of which the internal teeth 110 of the rotor 100 project, the inner teeth 110 being distributed. around an axis X100 of rotation of the rotor 100.
  • the rotor 100 comprises eleven teeth 110 which have a rounded profile approximately complementary to that of the external teeth 108.
  • the outer rotor 100 comprises at least one tooth of more than the inner rotor 98, so that the outer teeth 108 mesh with the internal teeth 110.
  • the shaft 4 thus rotates about the axis X100, the outer rotor 100, through the internal rotor 98
  • the outer rotor 100 comprises a circular peripheral surface 114 centered on its axis X100 through which it is rotatably mounted about this axis X100, on a cover 116 of the pump 72.
  • uvercle 116 is itself secured to the pump body 74, preferably being fixed by screws against the inner face 82 of the pump body 74.
  • the cover 116 comprises a internal chamber 117, puck-shaped circular section, centered on a parallel axis X117 and offset upwardly with respect to the axis X4.
  • the inner chamber 117 illustrated on the figure 10 , comprises a peripheral wall 119 for guiding the outer rotor 100 about the axis X117, so that the X100 and X117 axes are coaxial and off-axis with respect to an axis X76 defined by the orifice 76.
  • the X76 axes, X100 and X117 are included in the same plane, which is orthogonal to the plane of the bottom 14, orthogonal to the plane P74 and parallel to the planes P26 and P28 when the pump 72 is mounted in the machine 2.
  • the axis X4 is then interposed, in height, between the axis X117 and the lower face 96.
  • the inner chamber 117 is closed by the face 82 when the cover 116 is mounted on the pump body 74, so that the rotors 98 and 100 are housed between the face 82 and the cover 116, in the internal chamber 117.
  • the cover 116 further comprises a circular orifice 118 which is coaxial with the orifice 76 of the pump body 74, when the cover 116 is mounted on the latter, and through which the cover 116 is traversed by the shaft 4
  • a seal 120 is provided between the orifice 118 and the shaft 4 to substantially seal the internal chamber 117 of the pump 72.
  • a seal of the same kind is optionally provided within the orifice 76.
  • the inner rotor 98 and the outer rotor 100 constitute pumping members of the pump 72.
  • the teeth 108 and 110 together form an annular gap which defines suction-discharge chambers of the lubricant, whose volume varies by rotation of the rotors 98. and 100 controlled by the shaft 4, these volume variations generating a suction at the suction inlet 84, which opens into some of these chambers, whose volume increases with the rotation of the shaft 4, and a discharge at the level of the discharge port 86, which opens into some of these chambers, the volume of which decreases with the rotation of the shaft 4.
  • the suction-discharge chambers are arranged on the X4 axis side opposite the bottom 14 and connect the hearing 84 to the hearing 86.
  • the rotation of the shaft 4 in a first direction of rotation called "direct" about its axis X4 causes a pumping of the lubricant from the channel suction 78 to the channel of repression 80.
  • the rotating teeth 108 and 110 participate in the lubricant entrainment between the suction channel 78 and the discharge channel 80.
  • the cover 116 is adapted to be mounted on the pump body 74 in at least a second orientation about the inner rotor, not shown, which is distinct from that described above.
  • the cover 116 is preferably turned at 180 ° (degrees) about the axis X4 relative to the first orientation illustrated in the figures, so that the axis X117 is interposed, in height, between X4 and the bottom 14.
  • the suction-discharge chambers are in this case arranged between the axis X4 and the bottom 14, while connecting the hearing 84 to the hearing 86.
  • the pump 72 can thus be easily adapted to the direction of rotation of the shaft 4 as a function of the orientation of the cover 116 on the body 74.
  • the two orientations of the cover 116 thus define two distinct positions of the outer rotor 100 relative to the inner rotor 98.
  • the cover 116 and its chamber 117 constitute inversion means that can be easily configured to adapt the pump 72 to the circuit C2 between the channels 78 and 80 of the pump 72 allow to adjust the pump 7 2 so that it imposes a direction of flow of the correct lubricant, that is to say in the direction of the bodies to be lubricated, regardless of the direction of rotation of the shaft 4 which drives the pump 72.
  • pump reversal means can be adapted to allow a choice of lubricant flow direction within the circuit C2, such as spacers interposed between the pump 74 and the bottom 14 which can reverse the connection of the suction channels 78 and discharge 80 with the circuit C2.
  • the machine 2 can be equipped with any pump which can be traversed by the input shaft 4 and which generates a suction-discharge in an annular chamber around the shaft 4.
  • any pump which can be traversed by the input shaft 4 and which generates a suction-discharge in an annular chamber around the shaft 4.
  • a single-vane eccentric pump or a gear pump can be implemented to replace the trochoid pump mentioned above.
  • the pump 72 can be traversed and driven by the shaft 8 alternately to the shaft 4, or any other shaft belonging to the drive means of the levers 16 in oscillation.
  • the pump 72 is designed to put the lubricant in circulation in the circuit C2 of the machine 2 with a flow rate of 6 I / m (liters per minute), in the case where the speed of rotation of the shaft 4 is 900 rpm (revolutions per minute).
  • a lubricant distribution duct 122 is formed inside the common shaft 12, and extends coaxially with the axis X12, as can be seen in particular in FIGS. figures 1 and 2 .
  • a tubular wall 124 the section of which is in the form of a circular ring, belonging to the common shaft 12, delimits peripherally the distribution duct 122 and is coaxial with the axis X12.
  • the tubular wall 124 thus advantageously forms the wall of the duct 122, and delimits an interior space wherein the lubricant is for circulation.
  • the shaft 12 is thus a hollow tubular shaft within which the lubricant circulates.
  • the oscillating levers 16 are in practice mounted on the tubular wall 124 around the latter, for example by means of roller bearings (not shown).
  • Lubricant dispensing orifices 126 are formed through the tubular wall 124 along the first portion 30 of the shaft 12 on which the levers 16 are mounted.
  • the distribution duct 122 is thus placed in communication with the outside. of the common shaft 12, so that the levers 16 being oscillated are lubricated by lubricant which escapes from the distribution duct 122 through the dispensing orifices 126.
  • the orifices 126 distribute the lubricant to the friction parts outside the common shaft, the axial stops 18 and the bearings, not shown, by means of which the levers 16 are mounted on the shaft 12.
  • the latter accumulates the functions of the common support shaft of the levers 16 and the distribution member of the lubrication system.
  • the distribution duct 122 extends between an upstream first end 128 which is situated in the vicinity of the plane P26 of the first plate 26 and a second downstream end 132 which is situated in the vicinity of the plane P28 of the second plate 28. From the first end 128, the shaft 12 comprises a supply duct 130 which extends radially with respect to the axis X12 by extending the duct 122, the duct 130 opening out that the radial outer surface of the first end 34 of the 'tree 12 as visible to figures 1 and 6 . The lubricant supply of the distribution duct 122 is thus carried out radially with respect to the axis X12, through the duct 130.
  • An outlet duct 134 radially extends the duct 122, with respect to the axis X12, to the the second end 132.
  • the outlet duct 134 extends in a direction parallel to that of the supply duct 130 and opens on the outer radial surface of the intermediate section 36 of the shaft 12, as visible at Figures 8 and 9 .
  • the lubricant is thus intended to circulate in the distribution duct 122 from the supply duct 130 to the dispensing orifices 126 and to the outlet duct 134.
  • the supply duct 130 When the shaft 12 is in the weaving position, the supply duct 130 is placed facing and in contact, preferably sealed, with a transfer duct 136 formed in the first plate 26.
  • the conduit 136 opens on the surface of the bottom 40 of the recess 38 and is coaxial with the axis X38.
  • An orifice 136A forming the outlet of the conduit 136 is visible at the figure 7 , on the bottom 40.
  • the transfer duct 136 which belongs to the lubricant circuit C2, lubricates the supply duct 122, through the duct 130.
  • the contact between the transfer duct 136 and the supply duct 130 In the leveling position, the contact between the transfer duct 136 and the supply duct 130 is interrupted to the extent that the shaft 12 is spaced from the bottom 40.
  • the rotation of the shafts 4 and 8 is interrupted, so that the pump 72 is stopped.
  • the pump 72 and in particular the discharge duct 90 of the discharge channel 80 is connected to a secondary duct 138 of the lubricant circuit C2.
  • This secondary duct 138 is formed in the bottom 14 of the frame 6 and connects a first portion 142 of the duct 138 to a delivery duct 140 formed in the first plate 26, the supply duct 140 being itself connected to the duct. supply 130 of the shaft 12 through the transfer conduit 136 of the first plate.
  • the secondary duct 138, the supply duct 140 and the transfer duct 136 thus constitute a first continuous set of ducts which are formed in the frame 6 to drive the lubricant from the discharge duct 80 of the pump 72 to the duct supply 130 of the dispenser member.
  • the duct 138 comprises the first portion 142 which opens on the surface of the bottom 14 so as to be in facing relation and in contact, preferably sealed, with the lower discharge opening 94 of the discharge pipe 90 , when the pump 72 is mounted on the frame 6. It is understood that the opening 94 opens directly into the first portion 142 of the conduit 138, without intermediate connection means.
  • This first portion 142 is coaxial with the conduit 90 so that the lubricant flows from the conduit 90 to the first portion 142 of the conduit 138.
  • the secondary conduit 138 comprises a second portion 144, which is intermediate and which extends the first part 142 in the plane of the bottom 14, perpendicularly to the first portion 142. The second portion 144 extends from the bottom of the pump 72 to below the first plate 26.
  • the secondary conduit 138 finally comprises a third portion 146 which extends the second portion 144, perpendicular to the latter and parallel to the first portion 142, towards the hood of the machine 2.
  • the third portion 146 extends within the bottom 14 so that when the plate 26 is assembled on the bottom 14, the third portion 146 opens on the surface of the bottom 14 vis-à-vis and in contact, preferably sealed, with the inlet port of the supply duct 140 of the
  • the secondary conduit 138 thus forms a U, as can be seen in FIGS. figures 1 and 2 .
  • the supply duct 140 is substantially rectilinear and extends in the plane P26 perpendicular to the transfer duct 136. At the figure 2 given the angle of perspective, the cut portion of the plate 26 where are located the conduits 136 and 140 is not visible.
  • the mounting of the pump 72 on the frame 6 and the plate 26 on the bottom 14 communicates the discharge channel 80 of the pump 72 with the supply conduit 140.
  • the pump 72 thus delivers lubricant up to to the conduits 130 and 122 and thence to the dispensing orifices 126 to the oscillating levers 16.
  • a detection probe 148 is provided to detect the presence of lubricant in the circuit C2.
  • the probe 148 is mounted on the second plate 28, at the top of the latter, so as to be placed in the circuit C2 downstream of the dispensing orifices 126 of the dispenser member.
  • the lubricant circuit C2 comprises a probe duct 150 which is formed within the second plate 28 in the plane P28 and which is connected to the probe 148.
  • the probe duct 150 forms a set of ducts, for example rectilinear or curved ducts. , fluidly connected to the circuit C2.
  • the probe duct 150 forms a succession of rectilinear ducts, among which an annex duct 152 of the circuit C2, the annex duct 152 being placed facing each other and in contact with the outlet duct 134 when the shaft 12 is in the weaving position.
  • the outlet duct 134 of the shaft 12 is connected to the probe duct 150 via the annex duct 152.
  • the outlet duct 134 is preferably coaxial with the axis X44 when the shaft 12 is in the weaving position and opens into bottom surface 46 of the recess 44.
  • An orifice 152A forms the outlet of the probe duct 150, at the level of the annex duct 152.
  • the outlet duct 134 which belongs to the circuit C2 of lubricant and supplied by the distribution duct 122 of the common shaft 12, lubricating the probe duct 150 through the duct annex 152.
  • the outlet duct 134, and therefore the supply duct 130 are oriented obliquely upwards.
  • the shaft 12 is not only moved along the X38 and X44 axes, but also rotated by an angle between 0 and 90 ° around its axis X12 , relative to the frame 6.
  • the pump 72 is stopped.
  • the detection probe 148 comprises a float 154 which is immersed in a reservoir 156 of lubricant formed in the plate 28.
  • the float 154 is mounted to move in vertical translation on a sensor 158, which is in the form of a rod, of the probe 148.
  • This sensor 158 is able to send an alert signal to a control unit of the machine 2 in the case where the oil level in the tank is below a predetermined threshold, situation in which the float 154 is in a predetermined position located towards the The bottom of the reservoir 156.
  • the probe conduit 150 connects the reservoir 156 of the probe 148 to the annex conduit 152.
  • the lubrication system also includes a lubricant collection bag 160 located in the housing 6.
  • the lubricant intake into the collection bag 160 is effected under the suction action of the pump 72, so that the lubricant is The latter is drawn into the bottom 14, preferably at the lowest point of the machine 2, so that all the lubricant contained in the frame 6 can be collected.
  • the machine 2 comprises a lubricant filtering system of the circuit which includes at least one upstream filtering member 162, which is attached to the frame 6 so that it can be serviced or replaced easily.
  • the upstream filtering member 162 is generally elongate along an axis X162 and is housed in a sleeve 164 of the frame 6, which rises from the bottom 14 along an oblique axis coaxial with the X162 axis.
  • the filter member 162 is screwed into its sleeve 164 by its lower end 171, so that an upper end 170 of the member 162 is accessible from outside the frame 6, passing through the side 62 of the peripheral wall 56 of the frame 6.
  • the lower end 171 is oriented towards the bottom 14 and the upper end 170 in an opposite direction along the axis X162.
  • a plug 172 for protecting the filter member 162 is screwed onto the sleeve 164 at the upper end 170 coaxially with the axis X162.
  • the filtering member 162 defines a duct 166, coaxial with the axis X162, which extends from the collection bag 160 to a neighboring upper end of a permanent magnet 168 of the filtering member 162. - Even located at the upper end 170, under the cap 172.
  • the magnet 168 collects any metal debris and the filings contained in the lubricant.
  • the filter member 162 further comprises a tubular filter 174, or strainer, which is disposed around the conduit 166 and through which the lubricant is intended to be filtered while circulating in a downward axial direction, relative to the X162 axis, up to an internal compartment 176 of the circuit disposed above the collection bag 160.
  • the inner compartment 176 extends over a portion of the circumference and the height of the tubular filter 174, so that the lubricant is extracted radially from this tubular filter 174 to be poured into the internal compartment 176.
  • the collection bag 160 and the inner compartment 176 are made of material with the bottom 14. Alternatively, they may constitute elements on the 14.
  • the compartment 176 thus receives the lubricant after its filtering in the body of filtering 162, under the action of the suction of the pump 72.
  • the filtering member 162 filters the lubricant of the circuit C2 before it passes through the suction channel 78 of the pump.
  • the machine 2 comprises a downstream filtering member which filters the lubricant of the circuit after it has passed through the discharge channel 80.
  • a downstream filtering member is then connected to the circuit C2 between the pump 72 and the distribution duct 122 , ie for example in series on the secondary conduit 138.
  • the upstream filtering member 162 is optional.
  • the circuit C2 finally comprises a primary conduit 178 which connects the compartment 176 to the suction channel 78 of the pump 72.
  • the primary conduit 178 is formed in the bottom 14 of the frame 6 and comprises a substantially horizontal first portion 180, which is extends from the compartment 176 along an axis parallel to the axis X4.
  • the primary duct 178 comprises a second portion 182 which opens at the surface of the bottom 14 so as to face and contact, preferably sealed, with the lower suction opening 92 of the suction duct 88 of the pump 72 when the pump is mounted on the bottom 14. It is understood that the opening 92 opens directly into the second portion 182 of the conduit 178, without intermediate connection means. In this case, the second portion 182 is then coaxial with the suction duct 88 so that the lubricant flows from the second portion 182 to the duct 88.
  • the parts 180 and 182 of the primary duct 178 are perpendicular.
  • the lubricant circuit C2 thus comprises a second continuous set of ducts which are formed in the frame 6 to drive the lubricant from a lubricant filtering system to the suction channel 78 of the pump 72. particularly the inner compartment 176 and the primary conduit 178.
  • the various aforementioned conduits of the circuit C2 of the machine 2 have for example a diameter of about 6 mm (millimeters).
  • the lubricant circuit C2 comprises in the flow order of the lubricant: the collection bag 160, the sleeve 164, the internal compartment 176, the primary duct 178, the suction channel 78, the chambers of the lubricant. suction-discharge of the lubricant of the pump 72, the delivery channel 80, the secondary duct 138, the supply duct 140, the transfer duct 136, the supply duct 130, the distribution duct 122, the duct outlet 134, the annex duct 152, the probe duct 150 and the reservoir 156.
  • the circuit C2 is thus formed in the frame 6, the common shaft 12 and the pump 72, so that the various elements of the frame 6 such as the bottom 14 and the plates 26 and 28, the filter member 162, the pump 72 and the shaft 12 connect together all the parts of the circuit C2.
  • the manufacturing method of the machine 2 comprises steps of fixing the pump body 74 and the plates 26 and 28 on the bottom 14, for example by screws, which forms the circuit C2.
  • connection or “fluidic connection” or “fluidic connection” it is meant that there exists in a connected circuit configuration, a passage, channel or conduit arranged in one or more parts of the machine allowing the circulation of fluid between two organs or two spaces of this machine.
  • Some ducts of the frame 6 and of the pump 72 are, for example, made by machining, in particular by drilling, in particular for the ducts formed of rectilinear parts, such as the primary duct 178, the supply duct 140, the duct transfer 136, the annex duct 152, the probe duct 150, the suction duct 88, or the discharge duct 90.
  • the suction duct 84 and the discharge duct 90 are, for example, made by milling pump body 74, the blank of which is previously produced by molding.
  • the other ducts, such as the secondary duct 138 can be made during a molding step of the part of the frame 6 concerned, using cores or hollow metal inserts introduced into the mold of the part concerned. , in particular the bottom forming mold 14.
  • the circuit C2 comprises lubricant conduits, not shown, for lubricating the engagement of the drive wheel 10 with the receiving wheel 11.
  • seals are provided to seal the contact connection between two elements of the circuit C2 of the machine 2.
  • each of the openings 90 and 92 is provided with a reception counterbore, made of surface of the lower face 96, for a gasket, of the O-ring type or a flat gasket, not shown.
  • the machine 2 described above is of the mechanical cam type.
  • the lubrication system may be integrated on a rotating dobby-type mowing machine, in which, in essence, the camshaft 20 is replaced by a main shaft provided with rotating elements.
  • eccentric actuations belonging to drive units for driving oscillating levers 16 mounted on a shaft common parallel to the main shaft, the actuating elements being connected to the levers 16 by connecting rods.
  • the lubricant dispenser member is integral with, or is attached to, the frame.
  • the dispensing member is fluidly connected to the delivery channel of the pump, and is adapted to feed at least one lubricant duct arranged in the frame and plates reported, and opening on the machine's lubrication members, which are designed to be in motion.
  • These elements to be lubricated are, for example, conical drive meshing members, a modulator of the main shaft, the common shaft on which the output levers are mounted, zones of friction of the output levers, or any other mechanical connection requiring a supply of lubricant.
  • the lubrication system can be integrated in a crowd-forming machine, of the mechanical cam type, whose common shaft is leveled by eccentric elements, as in the example described in FIG. FR-A-2,868,090 .
  • the first plate 26 is fluidly connected to the distribution pipe 122 of the common shaft 12 at the end of the shaft and axially with respect to the axis X12, so that in the position of weaving the machine, the transfer duct 136 feeds the distribution duct 122 of the common shaft 12 coaxially through an orifice placed opposite the distribution duct 122.
  • the second plate 28 is fluidly connected to the distribution duct 122 of the common shaft 12 at the end of the shaft and axially with respect to the axis X12, so that in the weaving position of the machine, the distribution duct 122 supplies the duct 152 annexed coaxially through an orifice in the axis of the distribution duct.
  • intermediate parts attached to the first 26 and second 28 platens can respectively fluidly connect the transfer duct 136 and the annex duct 152 respectively to the distribution duct 122 of the shaft 12.
  • the pump body 74 is made of material with the bottom 14 so that the pump body 74 is integrated with the frame 6.
  • the suction channel 78 of the pump body is merged with the second part. 182 of the primary duct 178.
  • the discharge duct 80 coincides with the first portion 142 of the secondary duct 138.
  • suction and discharge lines not illustrated are advantageously arranged in the frame 6, to connect the lubricant circuit C2 to a lubricant cooling system attached to the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • General Details Of Gearings (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Looms (AREA)

Abstract

Cette machine (2) de formation de la foule comprend un système de lubrification, qui comprend un circuit de lubrifiant (C2) et une pompe (72) de mise en circulation du lubrifiant comprenant un corps de pompe (74) pourvu d'un canal d'aspiration (78) connecté à un conduit primaire (178) du circuit de lubrifiant et d'un canal de refoulement (80) de lubrifiant, qui est connecté à un conduit secondaire (138) du circuit de lubrifiant ménagé dans le bâti (6) Le canal d'aspiration (78) est en vis-à-vis et débouche sur le conduit primaire (178), qui est ménagé dans le bâti, et le canal de refoulement (80) est en vis-à-vis et débouche sur le conduit secondaire (138).This shedding machine (2) comprises a lubrication system, which comprises a lubricant circuit (C2) and a lubricant circulation pump (72) comprising a pump body (74) provided with a channel suction nozzle (78) connected to a primary duct (178) of the lubricant circuit and a lubricant delivery duct (80) connected to a secondary duct (138) of the lubricant circuit in the housing ( 6) The suction channel (78) is opposite and opens on the primary duct (178), which is formed in the frame, and the delivery channel (80) is vis-à-vis and leads to the secondary conduit (138).

Description

La présente invention concerne une machine de formation de la foule pour un métier à tisser, par exemple du type mécanique à cames ou ratière rotative, ainsi qu'un métier à tisser comprenant une telle machine de formation de la foule.The present invention relates to a shedding machine for a loom, for example of the mechanical type cam or rotary dobby, and a loom comprising such a machine for forming the crowd.

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 lisse et de la position relative du fil portée par la lisse d'un cadre.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 stringer frames and the relative position of the strand carried by the stringer of a stringer. frame.

La transmission du couple moteur du métier à tisser aux différents arbres de la machine et aux leviers de sortie sollicite les pièces métalliques en frottement et provoque des pertes calorifiques importantes de la machine.The transmission of the engine torque of the loom to the various shafts of the machine and the output levers stresses the metal parts in friction and causes significant heat losses 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. La lubrification active de ces éléments mécaniques ainsi que leur refroidissement jouent un rôle déterminant pour maintenir le bon fonctionnement de la machine dans le temps. La lubrification réduit les frottements des organes mécaniques en mouvement, évacue la chaleur créée par le frottement et capture les particules métalliques ainsi que des éventuels débris des zones de contact générés dans la machine. La lubrification diminue en outre le bruit de fonctionnement et protège les pièces contre l'oxydation et la corrosion.Given 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. The active lubrication of these mechanical elements as well as their cooling play a decisive role in maintaining the good functioning of the machine over time. Lubrication reduces the friction of moving mechanical parts, removes heat created by friction and captures metal particles as well as any debris from the contact areas generated in the machine. Lubrication also reduces operating noise and protects the parts against oxidation and corrosion.

L'arbre commun qui supporte les leviers de sortie constitue une zone critique qui doit être particulièrement approvisionnée en lubrifiant au démarrage et pendant le fonctionnement de la machine. Certaines machines connues comportent des systèmes de lubrification qui incluent des pompes hydrauliques et des tuyaux pour conduire le lubrifiant liquide vers l'arbre. Cette solution présente toutefois l'inconvénient de mettre en oeuvre des composants rapportés sur le bâti de la machine, notamment les tuyaux, dont le positionnement n'est pas toujours garanti. Les tuyaux, qui sont flexibles, sont sujets aux fuites et aux problèmes de montage. Le montage de la machine est en outre relativement complexe du fait des connexions de tuyaux à réaliser.The common shaft that supports the output levers is a critical area that must be particularly supplied with lubricant at startup and during operation of the machine. Some known machines include lubrication systems that include hydraulic pumps and hoses to drive liquid lubricant to the shaft. However, this solution has the disadvantage of using components reported on the frame of the machine, in particular pipes, whose positioning is not always guaranteed. Hoses, which are flexible, are subject to leaks and mounting problems. The assembly of the machine is also relatively complex because of the pipe connections to be made.

CN-Y-2 665 156 décrit un système de lubrification pour machine de formation de la foule, incluant une pompe à piston. La pompe est connectée avec un distributeur par le biais d'une conduite d'huile. Dans ce système de lubrification, la conduite d'huile peut être source de fuites et gêner les opérations de maintenance. CN-Y-2,665,156 discloses a lubrication system for a shedding machine, including a piston pump. The pump is connected with a distributor via an oil line. In this lubrication system, the oil line can cause leaks and interfere with maintenance operations.

Certaines machines, telles que les mécaniques à cames sont logées dans un espace réduit sous le métier à tisser, ce qui gêne les opérations de maintenance, surtout lorsque la machine est abondamment pourvue de tuyaux flexibles. Enfin, la machine manque d'adaptabilité lorsqu'elle machine doit être configurée pour un métier à tisser donné.Some machines, such as cam mechanisms are housed in a small space under the loom, which hinders maintenance operations, especially when the machine is abundantly provided with flexible hoses. Finally, the machine lacks adaptability when the machine must be configured for a given loom.

IT-B-1251843 décrit une ratière rotative qui inclut une pompe pour puiser de l'huile de lubrification contenue au fond d'un bâti de la ratière. La pompe comprend un guide courbe fixe avec une pluralité de chambres de capture d'huile pour alimenter en huile un arbre d'entraînement de la machine par l'intermédiaire d'un orifice traversant d'une première platine du bâti sur laquelle l'élément fixe est monté. L'huile est amenée et mise en mouvement au sein du guide fixe par une roue lisse qui tourne à proximité. Le circuit inclut un conduit de filtrage connecté directement à un orifice de refoulement du corps de la pompe, ainsi qu'un conduit de distribution de lubrifiant ménagé dans un arbre de la ratière et directement connecté à un orifice d'aspiration du corps de pompe. Le conduit de filtrage et le conduit de distribution sont disposés entre la première platine et une deuxième platine du bâti de la machine. Cette ratière présente l'inconvénient que la roue lisse trempe dans l'huile du fond du bâti et occupe ainsi un espace important. Par ailleurs, l'arbre des leviers n'est pas lubrifié. En outre, l'entretien du filtre nécessite un démontage de l'ensemble de la machine, dans la mesure où celui-ci est monté entre deux platines du bâti. IT-B-1251843 discloses a rotating dobby which includes a pump for drawing lubricating oil contained at the bottom of a frame of the dobby. The pump comprises a fixed curved guide with a plurality of oil capture chambers for supplying oil to a drive shaft of the machine via a through orifice of a first plate of the frame on which the element fixed is mounted. The oil is brought and set in motion within the fixed guide by a smooth wheel that rotates nearby. The circuit includes a filter line connected directly to a discharge port of the pump body, and a lubricant distribution conduit formed in a dobby shaft and directly connected to a suction port of the pump body. The filter duct and the distribution duct are arranged between the first plate and a second plate of the frame of the machine. This dobby has the disadvantage that the smooth wheel dipped in the oil from the bottom of the frame and thus occupies a large space. In addition, the lever shaft is not lubricated. In addition, the maintenance of the filter requires disassembly of the entire machine, insofar as it is mounted between two frames of the frame.

En conséquence, l'invention vise à porter remède aux inconvénients de l'art antérieur mentionné ci-avant, en proposant une nouvelle machine de formation de la foule particulièrement fiable, compacte et facile à entretenir.Accordingly, the invention aims to overcome the disadvantages of the prior art mentioned above, by proposing a new machine for forming the crowd particularly reliable, compact and easy to maintain.

L'invention a pour objet une machine de formation de la foule, pour un métier à tisser, la machine de formation de la foule comprenant des leviers oscillants de sortie, qui sont montés mobiles en rotation autour d'un arbre commun qui appartient à la machine et qui est monté sur un bâti de la machine, la machine de formation de la foule comprenant un système de lubrification, qui comprend un circuit de lubrifiant, une pompe de mise en circulation du lubrifiant au sein du circuit de lubrifiant, cette pompe comprenant un corps de pompe et au moins un organe de pompage mobile dans le corps de pompe, le corps de pompe étant pourvu d'un canal d'aspiration de lubrifiant, et d'un canal de refoulement de lubrifiant, qui est connecté à un conduit secondaire du circuit de lubrifiant, le conduit secondaire étant ménagé dans le bâti. Le système de lubrification comprend également un organe de distribution du lubrifiant vers au moins un organe à lubrifier de la machine, l'organe de distribution étant connecté au conduit secondaire du circuit de lubrifiant. Selon l'invention, Le canal d'aspiration de lubrifiant est connecté à un conduit primaire du circuit de lubrifiant, le conduit primaire étant ménagé dans le bâti. Selon l'invention, le canal d'aspiration est en vis-à-vis et débouche sur le conduit primaire et le canal de refoulement est en vis-à-vis et débouche sur le conduit secondaire.The invention relates to a shedding machine for a loom, the shedding machine comprising oscillating output levers, which are rotatably mounted around a common shaft belonging to the machine. machine and which is mounted on a frame of the machine, the shedding machine comprising a lubrication system, which comprises a lubricant circuit, a delivery pump, lubricant circulation within the lubricant circuit, this pump comprising a pump body and at least one movable pumping member in the pump body, the pump body being provided with a lubricant suction channel, and a lubricant delivery channel, which is connected to a secondary conduit of the lubricant circuit, the secondary conduit being formed in the frame. The lubrication system also comprises a lubricant dispensing member to at least one lubrication member of the machine, the dispensing member being connected to the secondary conduit of the lubricant circuit. According to the invention, the lubricant suction channel is connected to a primary duct of the lubricant circuit, the primary duct being formed in the frame. According to the invention, the suction channel is in facing relation and opens on the primary conduit and the discharge channel is in facing relation and opens on the secondary conduit.

Grâce à l'invention, le corps de pompe est directement connecté au circuit de lubrifiant par l'intermédiaire du bâti, ce qui évite la mise en oeuvre de tuyaux flexibles, limite les risques de fuite, facilite l'entretien et la fabrication de la machine. De plus, en l'absence de tels tuyaux flexibles, la compacité de la machine est améliorée.Thanks to the invention, the pump body is directly connected to the lubricant circuit via the frame, which avoids the implementation of flexible pipes, limits the risk of leakage, facilitates maintenance and manufacture of the machine. In addition, in the absence of such flexible hoses, the compactness of the machine is improved.

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

  • l'organe de distribution est formé par l'arbre commun qui comprend un conduit de distribution, qui est ménagé à l'intérieur de l'arbre commun en étant délimité par une paroi tubulaire de l'arbre commun sur laquelle les leviers oscillants sont montés, et des orifices de distribution, qui traversent la paroi tubulaire de façon à mettre en communication le conduit de distribution avec l'extérieur de l'arbre commun ;
  • le bâti comprend une première platine sur laquelle l'arbre commun est en appui, le circuit de lubrifiant comprenant un conduit d'apport qui est ménagé dans la première platine, le conduit d'apport étant alimenté en lubrifiant par le conduit secondaire, le circuit de lubrifiant comprenant un orifice alimenté par le conduit d'apport et placé en vis-à-vis avec un conduit d'alimentation de l'arbre commun, qui alimente le conduit de distribution en lubrifiant ;
  • le bâti comprend un deuxième platine sur laquelle l'arbre commun est en appui, le système de lubrification comprenant une sonde de détection de présence de lubrifiant dans le circuit de lubrifiant, la sonde de détection étant montée sur la deuxième platine, le circuit de lubrifiant comprenant un conduit de sonde qui est ménagé au sein de la deuxième platine et connecté fluidiquement à la sonde de détection, le conduit de sonde comprenant un orifice apte à être placé en vis-à-vis avec un conduit de sortie de l'arbre commun alimenté par le conduit de distribution en lubrifiant et qui alimente le conduit de sonde en lubrifiant ;
  • l'arbre commun est monté mobile par rapport au bâti entre une position de tissage, dans laquelle le conduit de sortie et le conduit de sonde sont en vis-à-vis, en contact et raccordés fluidiquement, et une position de nivelage, dans laquelle le conduit de sortie et le conduit de sonde sont écartés l'un de l'autre ;
  • la machine comprend en outre un système de filtrage du lubrifiant du circuit de lubrifiant, le système de filtrage comprenant un organe de filtrage amont qui filtre le lubrifiant du circuit de lubrifiant avant son passage dans le canal d'aspiration, et/ou un organe de filtrage aval qui filtre le lubrifiant du circuit de lubrifiant après son passage dans le canal de refoulement ;
  • la machine comprend un arbre d'entrée qui entraîne les leviers oscillants en mouvement et la pompe en fonctionnement pour mettre le lubrifiant en circulation dans le circuit de lubrifiant et à travers la pompe entre le conduit primaire et le conduit secondaire ;
  • l'arbre d'entrée traverse le corps de pompe de part en part ;
  • la pompe comprend des moyens d'inversion qui peuvent être solidarisés au corps de pompe selon deux orientations distinctes, dont une première orientation dans laquelle la pompe entraîne le lubrifiant depuis le canal d'aspiration jusqu'au canal de refoulement, lorsque l'arbre d'entrée est en rotation selon un premier sens de rotation, et une deuxième orientation dans laquelle la pompe entraîne le lubrifiant depuis le canal d'aspiration jusqu'au canal de refoulement lorsque l'arbre d'entrée est en rotation selon un second sens de rotation opposé au premier sens de rotation ;
  • la pompe est de type trochoïde et comprend des organes de pompage complémentaires entraînant le lubrifiant à travers la pompe ;
  • les moyens d'inversion comprennent un couvercle rapporté sur le corps de pompe, les organes de pompage complémentaires incluant un rotor interne et un rotor externe, le rotor externe étant monté rotatif sur le couvercle et le rotor interne monté solidaire de l'arbre de la machine, le couvercle étant conçu pour être monté sur le corps de pompe selon au moins deux orientations distinctes autour du rotor interne, définissant deux positions distinctes du rotor externe par rapport au rotor interne dans lesquelles le rotor externe est désaxé par rapport au rotor interne ;
  • le circuit de lubrifiant comprend un premier ensemble continu de conduits qui sont ménagés dans le bâti pour conduire le lubrifiant depuis le canal de refoulement jusqu'à un conduit d'alimentation en lubrifiant de l'organe de distribution ;
  • le circuit de lubrifiant comprend un deuxième ensemble continu de conduits qui sont ménagés dans le bâti pour conduire le lubrifiant depuis un système de filtrage du lubrifiant circulant dans le circuit de lubrifiant, jusqu'au canal d'aspiration ; et
  • le canal d'aspiration et le conduit primaire sont confondus, le canal de refoulement et le conduit secondaire sont confondus, le corps de pompe étant monobloc avec le bâti.
According to other advantageous features of the invention, taken separately or in combination:
  • the dispensing member is formed by the common shaft which comprises a distribution duct, which is formed inside the common shaft being delimited by a tubular wall of the common shaft on which the oscillating levers are mounted and dispensing orifices, which pass through the tubular wall so as to put the distribution duct into communication with the outside of the common shaft;
  • the frame comprises a first plate on which the common shaft bears, the lubricant circuit comprising a supply duct which is formed in the first plate, the supply duct being supplied with lubricant by the secondary duct, the circuit lubricant comprising an orifice fed by the supply duct and placed in facing relation with a supply duct of the common shaft, which supplies the distribution duct with lubricant;
  • the frame comprises a second plate on which the common shaft bears, the lubrication system comprising a sensor for detecting the presence of lubricant in the lubricant circuit, the detection probe being mounted on the second plate, the lubricant circuit comprising a probe duct which is formed in the second plate and fluidly connected to the detection probe, the probe duct comprising an orifice adapted to be placed in facing relation with an outlet duct of the shaft common fed by the lubricant distribution duct and which supplies the probe duct with lubricant;
  • the common shaft is mounted movable relative to the frame between a weaving position, in which the outlet duct and the probe duct are in facing relation, fluidically connected and in a leveling position, in which the outlet duct and the probe duct are spaced apart from each other;
  • the machine further comprises a filter system lubricant lubricant circuit, the filter system comprising an upstream filter member which filters the lubricant of the lubricant circuit before it passes through the suction channel, and / or a downstream filtering which filters the lubricant from the lubricant circuit after passing through the discharge channel;
  • the machine comprises an input shaft which drives the oscillating levers in motion and the pump in operation to circulate the lubricant in the lubricant circuit and through the pump between the primary conduit and the secondary conduit;
  • the input shaft passes through the pump body from one side to the other;
  • the pump comprises reversing means which can be secured to the pump body in two different orientations, a first orientation in which the pump drives the lubricant from the suction channel to the discharge channel, when the pump shaft inlet is rotated in a first direction of rotation, and a second orientation in which the pump drives the lubricant from the suction channel to the discharge channel when the input shaft rotates in a second direction of rotation. rotation opposite the first direction of rotation;
  • the pump is of the trochoid type and comprises complementary pumping members driving the lubricant through the pump;
  • the reversing means comprise a lid attached to the pump body, the complementary pumping members including an inner rotor and an outer rotor, the outer rotor being rotatably mounted on the lid and the inner rotor mounted integral with the shaft of the machine, the cover being adapted to be mounted on the pump body in at least two distinct orientations around the inner rotor, defining two distinct positions of the outer rotor with respect to the inner rotor in which the outer rotor is off-axis with respect to the inner rotor;
  • the lubricant circuit comprises a first continuous set of conduits which are provided in the frame for conducting the lubricant from the discharge channel to a lubricant supply conduit of the dispensing member;
  • the lubricant circuit comprises a second continuous set of conduits which are provided in the frame for conducting the lubricant from a lubricant filtering system circulating in the lubricant circuit to the suction channel; and
  • the suction channel and the primary duct are merged, the discharge duct and the secondary duct are combined, the pump body being integral with the frame.

L'invention a également pour objet un métier à tisser comprenant une machine de formation de la foule telle que définie ci-avant, laquelle forme une ratière rotative ou une mécanique à cames.The invention also relates to a loom comprising a machine for forming the crowd as defined above, which forms a rotating dobby or a cam mechanism.

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 :

  • les figures 1 et 2 sont des vues en perspective, coupées selon plusieurs traits de coupe et selon deux angles différents, d'une machine de formation de la foule conforme à l'invention ;
  • la figure 3 est une vue de dessus de la machine des figures 1 et 2, sur laquelle les plans de coupe des figures 1 et 2 sont représentés par la ligne I-I ;
  • la figure 4 est une coupe selon le trait de coupe IV-IV de la figure 3 ;
  • la figure 5 est une vue de détail à plus grande échelle du cadre V de la figure 4 ;
  • la figure 6 est une coupe selon la ligne VI-VI de la figure 3 ;
  • la figure 7 est une vue en perspective partielle d'une platine appartenant à la machine des figures 1 à 6 ;
  • les figures 8 et 9 sont des coupes selon la ligne VIII-VIII à la figure 3, la machine étant représentée selon deux configurations différentes ; et
  • la figure 10 est une vue éclatée d'une pompe appartenant à la machine des figures 1 à 9 et d'une partie du bâti de cette machine.
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 figures 1 and 2 are perspective views, cut in several cut lines and at two different angles, of a machine for forming the crowd according to the invention;
  • the figure 3 is a top view of the machine figures 1 and 2 , on which the cutting plans of the figures 1 and 2 are represented by line II;
  • the figure 4 is a section along line IV-IV of the section figure 3 ;
  • the figure 5 is a larger scale detail view of frame V of the figure 4 ;
  • the figure 6 is a section along the line VI-VI of the figure 3 ;
  • the figure 7 is a partial perspective view of a platinum belonging to the machine of Figures 1 to 6 ;
  • the Figures 8 and 9 are cuts along the line VIII-VIII to the figure 3 the machine being represented in two different configurations; and
  • the figure 10 is an exploded view of a pump belonging to the machine of Figures 1 to 9 and a part of the frame of this machine.

La machine 2 de formation de la foule des figures 1 et 2 est prévue pour être intégrée dans un métier à tisser et est de type mécanique à cames. La machine 2 comprend un arbre d'entrée 4 définissant un axe X4, destiné à être entraîné en rotation autour de l'axe X4 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 qui est visible uniquement à la figure 3. L'arbre 8 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. Les arbres 4 et 8 sont perpendiculaires entre eux, l'arbre 4 comprenant une roue d'entraînement 10, du genre pignon conique, engrainant une roue de réception 11, du genre roue dentée conique, de l'arbre 8.The machine 2 of training the crowd of figures 1 and 2 is intended to be integrated into a loom and is of the mechanical cam type. The machine 2 comprises an input shaft 4 defining an axis X4, intended to be rotated about the axis X4 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 which is visible only to the figure 3 . The shaft 8 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 shafts 4 and 8 are perpendicular between them, the shaft 4 comprising a drive wheel 10, of the conical gear type, engraining a receiving wheel 11, of the conical gear type, of the shaft 8.

La machine 2 comprend également un arbre 12 dont l'axe propre X12 est parallèle à l'axe X8.The machine 2 also comprises a shaft 12 whose own axis X12 is parallel to the axis X8.

Par commodité, la présente description est orientée selon la figure 4, les termes « haut » et « supérieur » désignant une direction axiale orientée vers le haut de la figure 4, les termes « bas » et « inférieur » désignant une direction opposée.For convenience, the present description is oriented according to the figure 4 , the terms "up" and "upper" denoting an axial direction facing upwards of the figure 4 the terms "low" and "lower" denoting an opposite direction.

Le bâti 6 forme un support inférieur en forme de cuve et comprend en l'espèce un fond 14 et une paroi périphérique 56 faisant saillie vers le haut à partir du contour du fond 14. La machine 2 comprend également un capot, non illustré, qui est monté de manière amovible sur la paroi périphérique 56 du bâti 6 de manière à fermer ce dernier par le dessus. De cette façon, les arbres 4, 8 et 12 sont inclus entre le fond 14 et le capot non représenté, qui définissent un volume intérieur de la machine 2. Du lubrifiant, du genre huile, est mis en mouvement au sein de ce volume intérieur, par un système de lubrification de la machine 2 décrit dans ce qui suit. Le bâti 6 accueille ainsi une certaine quantité de lubrifiant qui remplit une fraction au moins du volume intérieur de la machine 2.The frame 6 forms a lower support in the form of a tank and in this case comprises a bottom 14 and a peripheral wall 56 projecting upwards from the contour of the bottom 14. The machine 2 also comprises a hood, not shown, which is removably mounted on the peripheral wall 56 of the frame 6 so as to close the latter from above. In this way, the shafts 4, 8 and 12 are included between the bottom 14 and the not shown hood, which define an internal volume of the machine 2. Lubricant, of the oil type, is set in motion within this interior volume by a lubrication system of the machine 2 described below. The frame 6 thus receives a quantity of lubricant which fills at least a fraction of the internal volume of the machine 2.

La machine 2 comprend également des leviers oscillants 16, aussi appelés « leviers de sortie », qui sont montés rotatifs sur l'arbre 12, indépendamment les uns des autres, autour de l'axe X12. Ainsi l'arbre 12 forme un arbre de support des leviers 16, commun à ces leviers 16. Pour simplifier les dessins, un seul levier 16 est représenté, les autres étant omis. La machine 2 comprend par exemple huit leviers 16 montés sur l'arbre 12 et agencés les uns à côté des autres le long de ce dernier. En pratique, le nombre de leviers 16 monté sur l'arbre 12 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. Les leviers 16 s'étendent chacun dans un plan orthogonal à l'axe X12 et sont séparés par des butées axiales 18 à éléments roulants. Chacune des butées 18 est interposée entre deux leviers, hormis deux d'entre elles qui bordent les deux leviers 16 latéraux du groupe de leviers 16. Par ailleurs, chaque levier 16 comprend une extension 24 qui traverse le capot non illustré et s'étend à l'extérieur de la machine 2. Les extensions 24 sont reliées à des éléments mécaniques du tirage, non illustrés, pour former la foule sur le métier.The machine 2 also comprises oscillating levers 16, also called "output levers", which are rotatably mounted on the shaft 12, independently of each other, about the axis X12. Thus the shaft 12 forms a support shaft of the levers 16, common to these levers 16. To simplify the drawings, a single lever 16 is shown, the others being omitted. The machine 2 comprises for example eight levers 16 mounted on the shaft 12 and arranged next to each other along the latter. In practice, the number of levers 16 mounted on the shaft 12 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. The levers 16 each extend in a plane orthogonal to the axis X12 and are separated by axial stops 18 with rolling elements. Each of the stops 18 is interposed between two levers, except two of them which border the two lateral levers 16 of the group of levers 16. Moreover, each lever 16 comprises an extension 24 which passes through the not shown hood and extends to 2. The extensions 24 are connected to mechanical elements of the draw, not shown, to form the shed on the loom.

L'arbre 8, quant à lui, est équipé d'une pluralité de cames 20, visibles à la figure 3, pour entraîner les leviers 16 en oscillation autour de l'axe X12, par l'intermédiaire de galets 22 montés rotatifs sur les leviers 16. En pratique, chaque levier 16 comporte deux galets 22 qui sont chacun rotatifs autour d'un axe X22 et par rapport au levier 16 concerné. Les axes X22 sont parallèles entre eux et parallèles à l'axe X12. L'arbre 4 en rotation entraîne donc en mouvement les leviers 16.The shaft 8, meanwhile, is equipped with a plurality of cams 20, visible at the figure 3 to drive the levers 16 in oscillation about the axis X12, by means of rollers 22 rotatably mounted on the levers 16. In practice, each lever 16 comprises two rollers 22 which are each rotatable about an axis X22 and compared to the lever 16 concerned. The axes X22 are parallel to each other and parallel to the axis X12. The rotating shaft 4 therefore drives the levers 16 in movement.

Le bâti 6 comprend une première platine 26 et une deuxième platine 28 par l'intermédiaire desquelles l'arbre commun 12 est en appui sur le bâti 6. Les platines 26 et 28 font saillie à partir du fond 14 du bâti 6 et s'étendent à l'écart l'une de l'autre dans des plans respectifs P26 et P28 parallèles entre eux et perpendiculaires à l'axe X12, tel qu'illustré à la figure 3. De préférence, les platines 26 et 28 sont montées sur le fond 14 à l'aide de vis. En variante, au moins l'une des platines 26 et 28, voire les deux, vient de matière avec le fond 14.The frame 6 comprises a first plate 26 and a second plate 28 through which the common shaft 12 is supported on the frame 6. The plates 26 and 28 project from the bottom 14 of the frame 6 and extend away from each other in respective planes P26 and P28 parallel to each other and perpendicular to the axis X12, as illustrated in FIG. figure 3 . Preferably, the plates 26 and 28 are mounted on the bottom 14 with screws. Alternatively, at least one of the plates 26 and 28, or both, comes from material with the bottom 14.

Une première partie 30 de l'arbre 12 s'étend à partir de la première platine 26 jusqu'à la deuxième platine 28 et une deuxième partie 32 de l'arbre 12 visible à la figure 3 s'étend à partir de la deuxième platine 28 dans une direction opposée à la première platine 26.A first portion 30 of the shaft 12 extends from the first plate 26 to the second plate 28 and a second portion 32 of the shaft 12 visible to the figure 3 extends from the second plate 28 in a direction opposite to the first plate 26.

Une première extrémité 34 de l'arbre 12 est reçue en appui contre la platine 26, la première partie 30 de l'arbre 12 débutant à partir de cette première extrémité 34. La platine 26 comprend un évidement 38 de réception de l'arbre 12, visible aux figures 4, 6 et 7, au sein duquel l'arbre 12 est en appui par l'intermédiaire de sa première extrémité 34. L'évidement 38 présente une forme de U, et comprend un fond 40 et deux bords parallèles 42 qui s'étendent à partir du fond 40. Les bords 42 sont disposés l'un par rapport à l'autre à une distance qui est supérieure au, et voisine du, diamètre de la section de l'arbre 12 définie au niveau de l'extrémité 34 de ce dernier. Le fond 40 présente quant à lui une forme circulaire que prolongent les bords 42, pour épouser la périphérie de l'extrémité 34. L'évidement 38 s'étend dans le plan P26 et définit un axe médian X38 équidistant des bords 42 et parallèle à ces derniers, qui est orienté de façon oblique par rapport à un plan défini par le fond 14. L'évidement 38 est ouvert dans une direction parallèle avec l'axe médian X38, dirigée vers le haut et opposée au fond 40. De cette façon, l'arbre 12 peut coulisser dans l'évidement 38 depuis une position basse, dite « de tissage », dans laquelle il est en appui contre le fond 40, jusqu'à une position haute, dite « de nivelage » dans laquelle il est écarté du fond 40 et de l'arbre 8, et est en appui contre l'un des bords 42.A first end 34 of the shaft 12 is received in abutment against the plate 26, the first portion 30 of the shaft 12 starting from this first end 34. The plate 26 comprises a recess 38 for receiving the shaft 12 visible at figures 4 , 6 and 7 in which the shaft 12 is supported by means of its first end 34. The recess 38 has a U-shape, and comprises a bottom 40 and two parallel edges 42 which extend from the bottom 40 The edges 42 are disposed relative to each other at a distance which is greater than, and adjacent to, the diameter of the section of the shaft 12 defined at the end 34 of the latter. The bottom 40 has a circular shape that extends the edges 42, to fit the periphery of the end 34. The recess 38 extends in the plane P26 and defines a median axis X38 equidistant from the edges 42 and parallel to the latter, which is oriented obliquely with respect to a plane defined by the bottom 14. The recess 38 is open in a direction parallel to the median axis X38, directed upwards and opposite the bottom 40. In this way , the shaft 12 can slide in the recess 38 from a low position, called "weaving", in which it bears against the bottom 40, to a high position, called "leveling" in which it is spaced from the bottom 40 and the shaft 8, and bears against one of the edges 42.

Une section intermédiaire 36 de l'arbre 12 est en appui sur la platine 28. Cette section intermédiaire 36 est située entre la première partie 30 et la deuxième partie 32. De façon similaire à la platine 26, la platine 28 comprend un évidement 44 avec un fond 46 et des bords parallèles en eux 48 qui s'étendent à partir du fond 46, pour recevoir la section intermédiaire 36 de l'arbre 12 en appui contre la platine 28, comme visible aux figures 8 et 9. L'évidement 44 présente lui aussi une forme de U. Les bords 48 sont disposés l'un par rapport à l'autre à une distance qui est supérieure au, et voisine du, diamètre de la section de l'arbre 12 définie au niveau de la section intermédiaire 36 de ce dernier. Le fond 44 présente quant à lui une forme circulaire que prolongent les bords 48, pour épouser la périphérie de la section intermédiaire 36. L'évidement 44 s'étend dans le plan P28 et définit un axe médian X44 équidistant des bords 48, parallèle à ces derniers et à l'axe X38. L'évidement 44 est ouvert dans une direction parallèle avec l'axe médian X44, dirigée vers le haut et opposée au fond 46 et à l'arbre 8. De cette façon, l'arbre 12 peut coulisser dans l'évidement 44 depuis la position de tissage, dans laquelle il est en appui contre le fond 46, jusqu'à la position de nivelage dans laquelle il est écarté du fond 46 et est en appui contre l'un des bords 48.An intermediate section 36 of the shaft 12 bears on the plate 28. This intermediate section 36 is located between the first part 30 and the second part 32. In a similar way to the plate 26, the plate 28 comprises a recess 44 with a bottom 46 and parallel edges 48 which extend from the bottom 46, to receive the intermediate section 36 of the shaft 12 bearing against the plate 28, as visible at Figures 8 and 9 . The recess 44 is also U-shaped. The edges 48 are disposed relative to each other at a distance which is greater than, and adjacent to, the diameter of the section of the shaft 12 defined at the of the intermediate section 36 of the latter. The bottom 44 has a circular shape that extends the edges 48, to fit the periphery of the intermediate section 36. The recess 44 extends in the plane P28 and defines a median axis X44 equidistant from the edges 48, parallel to these and the X38 axis. The recess 44 is open in a direction parallel to the median axis X44, directed upwards and opposite the bottom 46 and the shaft 8. In this way, the shaft 12 can slide in the recess 44 from the weaving position, in which it bears against the bottom 46, to the leveling position in which it is spaced from the bottom 46 and bears against one of the edges 48.

En résumé, l'arbre commun 12 est monté mobile par rapport au bâti 6 entre la position de tissage et la position de nivelage, en gardant son axe X12 parallèle à l'axe X8. Au cours du changement de position correspondant au passage de l'une de ces positions à l'autre, l'orientation de l'arbre 12 autour de son axe X12, par rapport au bâti 6 est également modifiée, comme détaillé dans ce qui suit. La machine 2 et ainsi conçue pour évoluer entre une configuration de tissage représentée à la figure 8, dans laquelle l'arbre 12 est en position de tissage, et une configuration de nivelage, représentée à la figure 9, dans laquelle l'arbre 12 est dans une position de nivelage, le déplacement de l'arbre 12 entre ces deux positions distinctes étant opéré par un système de nivelage non illustré, qui est en prise sur la deuxième partie 32 de l'arbre 12. En configuration de nivelage, les galets 22 de chacun des leviers 16 sont écartés des cames 20, de sorte que l'arbre d'entraînement 8 et les leviers 16 sont découplés. En configuration de nivelage, les leviers 16 ne sont donc plus entraînés par l'arbre 8, contrairement à la configuration de tissage dans laquelle les galets 22 sont en appui sur et entraînés par les cames 20 de l'arbre 8.In summary, the common shaft 12 is mounted to move relative to the frame 6 between the weaving position and the leveling position, keeping its axis X12 parallel to the axis X8. During the change of position corresponding to the passage from one of these positions to the other, the orientation of the shaft 12 about its axis X12, relative to the frame 6 is also modified, as detailed in the following . The machine 2 and thus designed to evolve between a weaving configuration represented in FIG. figure 8 , in which the shaft 12 is in the weaving position, and a leveling configuration, shown in FIG. figure 9 , in which the shaft 12 is in a leveling position, the displacement of the shaft 12 between these two distinct positions being operated by a not illustrated leveling system, which is engaged on the second portion 32 of the shaft 12 In the leveling configuration, the rollers 22 of each of the levers 16 are spaced from the cams 20, so that the drive shaft 8 and the levers 16 are decoupled. In the leveling configuration, the levers 16 are no longer driven by the shaft 8, unlike the weaving configuration in which the rollers 22 are supported on and driven by the cams 20 of the shaft 8.

La platine 26 comprend un palier 50 et la platine 28 un palier 52 par l'intermédiaire desquels l'arbre 8 est monté rotatif autour de son axe X8 sur le bâti 6. La roue dentée 11 est montée sur une extrémité 51 de l'arbre 8, qui s'étend après le palier 50 à l'opposé du palier 52, en direction de l'axe X4.The plate 26 comprises a bearing 50 and the plate 28 a bearing 52 through which the shaft 8 is rotatably mounted about its axis X8 on the frame 6. The toothed wheel 11 is mounted on one end 51 of the shaft 8, which extends after the bearing 50 opposite the bearing 52, in the direction of the axis X4.

L'arbre d'entrée 4 est monté rotatif autour de son axe X4 sur le bâti 6 par l'intermédiaire d'une troisième platine 54 et d'un côté 60 de la paroi périphérique 56. La troisième platine 54 s'étend dans un plan P54 qui est perpendiculaire aux plans P26 et P28. La troisième platine 54 fait saillie du fond 14 et est traversée par l'arbre 4, ce dernier étant monté sur la platine 54 par l'intermédiaire d'un palier 58. La platine 54 est montée, par exemple, par des vis sur le fond 14, ou, en variante, vient de matière avec ce dernier. Le côté 60 de la paroi périphérique 56 s'étend dans un plan parallèle au plan P54 et situé à distance de ce dernier. La platine 54 est disposée entre le côté 60 et un côté 62 de la paroi 56 qui est opposé au côté 60 tout en étant parallèle à ce dernier. L'arbre 4 est monté rotatif au travers du côté 60 par l'intermédiaire d'un palier 64 doté de moyens d'étanchéité pour éviter des fuites de lubrifiant hors du volume intérieur de la machine 2. L'arbre 4 comprend ainsi une première partie 66 qui s'étend à l'extérieur de la machine 2 jusqu'à la paroi 60, une deuxième partie 68 qui s'étend entre le côté 60 et la platine 54 et une troisième partie 70 qui est terminale et s'étend à partir de la platine 54 et sur laquelle le pignon d'entraînement 10 est monté solidaire.The input shaft 4 is rotatably mounted about its axis X4 on the frame 6 via a third plate 54 and a side 60 of the peripheral wall 56. The third plate 54 extends in a plane P54 which is perpendicular to planes P26 and P28. The third plate 54 protrudes from the bottom 14 and is traversed by the shaft 4, the latter being mounted on the plate 54 by means of a bearing 58. The plate 54 is mounted, for example, by screws on the bottom 14, or, alternatively, comes from material with the latter. The side 60 of the peripheral wall 56 extends in a plane parallel to the plane P54 and located at a distance from the latter. The plate 54 is disposed between the side 60 and a side 62 of the wall 56 which is opposite to the side 60 while being parallel to the latter. The shaft 4 is rotatably mounted through the side 60 via a bearing 64 provided with sealing means to prevent leakage of lubricant from the internal volume of the machine 2. The shaft 4 thus comprises a first part 66 which extends outside the machine 2 to the wall 60, a second part 68 which extends between the side 60 and the plate 54 and a third part 70 which is terminal and extends to from the plate 54 and on which the drive gear 10 is mounted integrally.

Le système de lubrification de la machine 2 comprend une pompe 72, qui met en circulation le lubrifiant dans un circuit C2 de lubrifiant de la machine 2 jusqu'à un organe de distribution de lubrifiant vers un ou plusieurs organes à lubrifier de la machine 2, par exemple les leviers oscillants 16. Le lubrifiant est ensuite déversé au sein du volume intérieur de la machine 2 pour être à nouveau pompé par la pompe 72.The lubrication system of the machine 2 comprises a pump 72, which circulates the lubricant in a lubricant circuit C2 of the machine 2 to a lubricant dispenser member to one or more lubrication members of the machine 2, for example the oscillating levers 16. The lubricant is then poured into the interior volume of the machine 2 to be pumped again by the pump 72.

La pompe 72, qui est représentée seule à la figure 10, est une pompe hydraulique de type trochoïde. La pompe 72 est entraînée par l'arbre d'entrée 4 pour mettre le lubrifiant en circulation dans le circuit C2 et dans la machine 2. La pompe 72 est traversée de part en part par la deuxième partie 68 de l'arbre 4 et est disposée entre la platine 54 et le côté 60 de la paroi périphérique 56.The pump 72, which is shown alone at figure 10 , is a trochoid type hydraulic pump. The pump 72 is driven by the input shaft 4 to put the lubricant in circulation in the circuit C2 and in the machine 2. The pump 72 is traversed right through by the second portion 68 of the shaft 4 and is arranged between the plate 54 and the side 60 of the peripheral wall 56.

La pompe 72 comprend en l'espèce un corps de pompe 74, visible notamment à la figure 10, qui est solidaire du fond 14 du bâti 6, par exemple en étant fixé par des vis à ce dernier. Le corps de pompe 74 fait saillie du fond 14 et est de forme générale plane de façon à définir un plan P74 parallèle au plan P54 et orthogonal à l'axe X4. L'arbre 4 traverse le corps 74 par l'intermédiaire d'un orifice circulaire 76 de ce dernier, l'orifice circulaire étant centré sur un axe orthogonal au plan P74.The pump 72 comprises in this case a pump body 74, visible in particular at the figure 10 which is secured to the bottom 14 of the frame 6, for example by being fixed by screws to the latter. The pump body 74 projects from the bottom 14 and is generally planar in shape so as to define a plane P74 parallel to the plane P54 and orthogonal to the axis X4. The shaft 4 passes through the body 74 via a circular orifice 76 of the latter, the circular orifice being centered on an axis orthogonal to the plane P74.

Le corps de pompe 74 est pourvu en outre d'un canal d'aspiration 78 du lubrifiant et d'un canal de refoulement 80 du lubrifiant. Les canaux 78 et 80 débouchent respectivement par une ouïe d'aspiration 84 et une ouïe de refoulement 86 au niveau d'une face intérieure 82 du corps de pompe 74. La face intérieure 82 s'étend elle-même dans un plan parallèle au plan P74, l'orifice 76 débouchant au centre de la face intérieure 82. Les ouïes 84 et 86 présentent chacune une forme d'arc de cercle centrée sur l'axe X4 et sont disposées à l'opposé l'une de l'autre, de part et d'autre de l'orifice 76. Le canal de refoulement 80 est ainsi disposé du côté des platines 26 et 28, alors que le canal d'aspiration 78 est disposé à l'opposé.The pump body 74 is further provided with a suction channel 78 of the lubricant and a delivery channel 80 of the lubricant. The channels 78 and 80 open respectively by a suction inlet 84 and a discharge port 86 at an inner face 82 of the pump body 74. The inner face 82 itself extends in a plane parallel to the plane P74, the orifice 76 opening at the center of the inner face 82. The gills 84 and 86 each have a circular arc shape centered on the axis X4 and are arranged opposite to each other, on either side of the orifice 76. The discharge channel 80 is thus disposed on the side of the plates 26 and 28, while the suction channel 78 is disposed opposite.

Le canal d'aspiration 78 et le canal de refoulement 80 comprennent également, de façon respective, un conduit d'aspiration 88 et un conduit de refoulement 90. Les conduits 88 et 90 s'étendent de façon parallèle l'un par rapport à l'autre et dans un plan qui est parallèle au plan P74. Le conduit 88 relie l'ouïe 84 à une ouverture inférieure d'aspiration 92 du corps de pompe 74. De la même façon, le conduit de refoulement 90 relie l'ouïe 86 à une ouverture inférieure de refoulement 94 du corps de pompe 74. En résumé, le canal 78 est formé des parties 84, 88 et 92, alors que le canal 80 est formé des parties 86, 90 et 94. Les ouvertures 92 et 94 débouchent sur une face inférieure 96 du corps de pompe 74, laquelle est en contact avec le fond 14 du bâti 6 lorsque le corps de pompe 74 est fixé par vis sur le fond 14.The suction channel 78 and the discharge channel 80 also comprise, respectively, a suction duct 88 and a discharge duct 90. The ducts 88 and 90 extend parallel to one another. other and in a plane that is parallel to plane P74. The duct 88 connects the duct 84 to a lower suction opening 92 of the pump casing 74. In the same way, the discharge duct 90 connects the duct 86 to a lower discharge opening 94 of the pump casing 74. In summary, the channel 78 is formed of the portions 84, 88 and 92, while the channel 80 is formed of the portions 86, 90 and 94. The openings 92 and 94 open on a lower face 96 of the pump body 74, which is in contact with the bottom 14 of the frame 6 when the pump body 74 is fixed by screw on the bottom 14.

Selon une autre variante non illustrée, une pièce intermédiaire, du genre entretoise, est interposée entre la pompe 74 et le fond 14, cette pièce intermédiaire étant traversée par deux conduits prolongeant les ouvertures 92 et 94 en direction du fond 14.According to another variant not shown, an intermediate piece, of the spacer type, is interposed between the pump 74 and the bottom 14, this intermediate piece being traversed by two ducts extending the openings 92 and 94 towards the bottom 14.

La pompe 72 comprend également un rotor interne 98 et un rotor externe 100 qui forment des organes de pompage mobiles dans le corps de pompe 74. Le rotor interne 98 est fixé sur l'arbre 4 et traversé par ce dernier par l'intermédiaire d'un orifice central 102 du rotor interne 98. L'orifice central 102 comprend un méplat 104 qui coopère avec un méplat 106 de l'arbre 4 de façon à fixer en rotation le rotor interne 98 par rapport à l'arbre 4, autour de l'axe X4. Le rotor 98 est monté contre la face intérieure 82 du corps de pompe 74. Le rotor interne 98 est pourvu d'une pluralité de dents externes 108, dans cet exemple dix dents 108, qui sont réparties sur la circonférence externe du rotor interne 98, autour de l'axe X4. Les dents externes 108 présentent un profil arrondi. Le rotor externe 100 forme une couronne qui est montée contre la face intérieure 82 autour du rotor interne 98. Le rotor externe 100 comprend un orifice central 112 vers le centre duquel font saillie des dents internes 110 du rotor 100, les dents internes 110 étant réparties autour d'un axe X100 de rotation du rotor 100. Dans cet exemple, le rotor 100 comprend onze dents 110 qui présentent un profil arrondi approximativement complémentaire avec celui des dents externes 108. En pratique, le rotor externe 100 comprend au moins une dent de plus que le rotor interne 98, de sorte que les dents externes 108 engrènent avec les dents internes 110. L'arbre 4 entraîne ainsi en rotation, autour de l'axe X100, le rotor externe 100, par l'intermédiaire du rotor interne 98. Le rotor externe 100 comprend une surface périphérique circulaire 114 centrée sur son axe X100 par l'intermédiaire de laquelle il est monté rotatif, autour de cet axe X100, sur un couvercle 116 de la pompe 72. Le couvercle 116 est lui-même solidaire du corps de pompe 74, en étant préférentiellement fixé par des vis contre la face interne 82 du corps de pompe 74. Le couvercle 116 comprend une chambre interne 117, en forme de palet à section circulaire, centré sur un axe X117 parallèle et désaxé vers le haut par rapport à l'axe X4. La chambre interne 117, illustrée sur la figure 10, comprend une paroi périphérique 119 de guidage en rotation du rotor externe 100 autour de l'axe X117, de sorte que les axes X100 et X117 sont coaxiaux et désaxés par rapport à un axe X76 définis par l'orifice 76. Les axes X76, X100 et X117 sont inclus dans un même plan, qui est orthogonal au plan du fond 14, orthogonal au plan P74 et parallèle aux plans P26 et P28 lorsque la pompe 72 est montée dans la machine 2. Dans cette configuration de montage, l'axe X4 est alors interposé, en hauteur, entre l'axe X117 et la face inférieure 96.La chambre interne 117 est fermée par la face 82 lorsque le couvercle 116 est monté sur le corps de pompe 74, de sorte que les rotors 98 et 100 sont logés entre la face 82 et le couvercle 116, dans la chambre interne 117.The pump 72 also comprises an inner rotor 98 and an outer rotor 100 which form movable pumping members in the pump body 74. The inner rotor 98 is fixed on the shaft 4 and traversed by the latter via a central orifice 102 of the inner rotor 98. The central orifice 102 comprises a flat portion 104 which cooperates with a flat portion 106 of the shaft 4 so as to fix in rotation the inner rotor 98 with respect to the shaft 4, around the X4 axis. The rotor 98 is mounted against the inner face 82 of the pump body 74. The inner rotor 98 is provided with a plurality of external teeth 108, in this example ten teeth 108, which are distributed over the outer circumference of the inner rotor 98, around the X4 axis. The outer teeth 108 have a rounded profile. The outer rotor 100 forms a ring which is mounted against the inner face 82 around the inner rotor 98. The outer rotor 100 comprises a central orifice 112 towards the center of which the internal teeth 110 of the rotor 100 project, the inner teeth 110 being distributed. around an axis X100 of rotation of the rotor 100. In this example, the rotor 100 comprises eleven teeth 110 which have a rounded profile approximately complementary to that of the external teeth 108. In practice, the outer rotor 100 comprises at least one tooth of more than the inner rotor 98, so that the outer teeth 108 mesh with the internal teeth 110. The shaft 4 thus rotates about the axis X100, the outer rotor 100, through the internal rotor 98 The outer rotor 100 comprises a circular peripheral surface 114 centered on its axis X100 through which it is rotatably mounted about this axis X100, on a cover 116 of the pump 72. uvercle 116 is itself secured to the pump body 74, preferably being fixed by screws against the inner face 82 of the pump body 74. The cover 116 comprises a internal chamber 117, puck-shaped circular section, centered on a parallel axis X117 and offset upwardly with respect to the axis X4. The inner chamber 117, illustrated on the figure 10 , comprises a peripheral wall 119 for guiding the outer rotor 100 about the axis X117, so that the X100 and X117 axes are coaxial and off-axis with respect to an axis X76 defined by the orifice 76. The X76 axes, X100 and X117 are included in the same plane, which is orthogonal to the plane of the bottom 14, orthogonal to the plane P74 and parallel to the planes P26 and P28 when the pump 72 is mounted in the machine 2. In this mounting configuration, the axis X4 is then interposed, in height, between the axis X117 and the lower face 96.The inner chamber 117 is closed by the face 82 when the cover 116 is mounted on the pump body 74, so that the rotors 98 and 100 are housed between the face 82 and the cover 116, in the internal chamber 117.

Le couvercle 116 comprend en outre un orifice circulaire 118 qui est coaxial avec l'orifice 76 du corps de pompe 74, lorsque le couvercle 116 est monté sur ce dernier, et par l'intermédiaire duquel le couvercle 116 est traversé par l'arbre 4. Un joint d'étanchéité 120 est prévu entre l'orifice 118 et l'arbre 4 pour isoler de façon sensiblement étanche la chambre interne 117 de la pompe 72. Un joint d'étanchéité du même genre est optionnellement prévu au sein de l'orifice 76.The cover 116 further comprises a circular orifice 118 which is coaxial with the orifice 76 of the pump body 74, when the cover 116 is mounted on the latter, and through which the cover 116 is traversed by the shaft 4 A seal 120 is provided between the orifice 118 and the shaft 4 to substantially seal the internal chamber 117 of the pump 72. A seal of the same kind is optionally provided within the orifice 76.

Le rotor interne 98 et le rotor externe 100 constituent des organes de pompage de la pompe 72. Les dents 108 et 110 forment ensemble un interstice annulaire qui définit des chambres d'aspiration-refoulement du lubrifiant, dont le volume varie par rotation des rotors 98 et 100 commandée par l'arbre 4, ces variations de volume générant une aspiration au niveau de l'ouïe d'aspiration 84, laquelle débouche dans certaines de ces chambres, dont le volume augmente avec la rotation de l'arbre 4, et un refoulement au niveau de l'ouïe de refoulement 86, laquelle débouche au sein de certaines de ces chambres, dont le volume diminue avec la rotation de l'arbre 4. Les chambres d'aspiration-refoulement sont ménagées du côté de l'axe X4 opposé au fond 14 et relient l'ouïe 84 à l'ouïe 86. Ainsi, la rotation de l'arbre 4 selon un premier sens de rotation dit « direct », autour de son axe X4, entraîne un pompage du lubrifiant depuis le canal d'aspiration 78 jusqu'au canal de refoulement 80. Les dents 108 et 110 en rotation participent à l'entrainement du lubrifiant entre le canal d'aspiration 78 et le canal de refoulement 80.The inner rotor 98 and the outer rotor 100 constitute pumping members of the pump 72. The teeth 108 and 110 together form an annular gap which defines suction-discharge chambers of the lubricant, whose volume varies by rotation of the rotors 98. and 100 controlled by the shaft 4, these volume variations generating a suction at the suction inlet 84, which opens into some of these chambers, whose volume increases with the rotation of the shaft 4, and a discharge at the level of the discharge port 86, which opens into some of these chambers, the volume of which decreases with the rotation of the shaft 4. The suction-discharge chambers are arranged on the X4 axis side opposite the bottom 14 and connect the hearing 84 to the hearing 86. Thus, the rotation of the shaft 4 in a first direction of rotation called "direct" about its axis X4, causes a pumping of the lubricant from the channel suction 78 to the channel of repression 80. The rotating teeth 108 and 110 participate in the lubricant entrainment between the suction channel 78 and the discharge channel 80.

De préférence, le couvercle 116 est conçu pour être monté sur le corps de pompe 74 selon au moins une deuxième orientation autour du rotor interne, non illustrée, qui est distincte de celle décrite ci-avant. Dans sa deuxième orientation, le couvercle 116 est préférentiellement tourné à 180° (degrés) autour de l'axe X4 par rapport à la première orientation illustrée aux figures, de sorte que l'axe X117 est interposé, en hauteur, entre X4 et le fond 14. Les chambres d'aspiration-refoulement sont dans ce cas ménagées entre l'axe X4 et le fond 14, tout en reliant l'ouïe 84 à l'ouïe 86. La rotation de l'arbre 4 selon un second sens de rotation dit « indirect » opposé au premier sens de rotation direct, autour de son axe X4, entraîne le pompage du lubrifiant depuis le canal d'aspiration 78 jusqu'au canal de refoulement 80. La pompe 72 peut ainsi être facilement adaptée au sens de rotation de l'arbre 4 en fonction de l'orientation du couvercle 116 sur le corps 74. Les deux orientations du couvercle 116 définissent ainsi deux positions distinctes du rotor externe 100 par rapport au rotor interne 98. Le couvercle 116 et sa chambre 117 constituent des moyens d'inversion qui peuvent être facilement configurés pour adapter la pompe 72 au circuit C2 entre les canaux 78 et 80 de la pompe 72 permettent de régler la pompe 72 afin qu'elle impose un sens de circulation du lubrifiant correct, c'est-à-dire en direction des organes à lubrifier, quel que soit le sens de rotation de l'arbre 4 qui entraîne la pompe 72.Preferably, the cover 116 is adapted to be mounted on the pump body 74 in at least a second orientation about the inner rotor, not shown, which is distinct from that described above. In its second orientation, the cover 116 is preferably turned at 180 ° (degrees) about the axis X4 relative to the first orientation illustrated in the figures, so that the axis X117 is interposed, in height, between X4 and the bottom 14. The suction-discharge chambers are in this case arranged between the axis X4 and the bottom 14, while connecting the hearing 84 to the hearing 86. The rotation of the shaft 4 in a second direction of rotation called "indirect" opposite the first direction of direct rotation, about its axis X4, causes the pumping of the lubricant from the channel d The pump 72 can thus be easily adapted to the direction of rotation of the shaft 4 as a function of the orientation of the cover 116 on the body 74. The two orientations of the cover 116 thus define two distinct positions of the outer rotor 100 relative to the inner rotor 98. The cover 116 and its chamber 117 constitute inversion means that can be easily configured to adapt the pump 72 to the circuit C2 between the channels 78 and 80 of the pump 72 allow to adjust the pump 7 2 so that it imposes a direction of flow of the correct lubricant, that is to say in the direction of the bodies to be lubricated, regardless of the direction of rotation of the shaft 4 which drives the pump 72.

En variante, d'autres moyens d'inversion de la pompe peuvent être adaptés pour permettre un choix de sens de circulation du lubrifiant au sein du circuit C2, tels que des entretoises interposées entre la pompe 74 et le fond 14 qui permettent d'inverser la connexion des canaux d'aspiration 78 et de refoulement 80 avec le circuit C2.Alternatively, other pump reversal means can be adapted to allow a choice of lubricant flow direction within the circuit C2, such as spacers interposed between the pump 74 and the bottom 14 which can reverse the connection of the suction channels 78 and discharge 80 with the circuit C2.

En variante, alternativement à une pompe trochoïde, la machine 2 peut être équipée de toute pompe qui peut être traversée par l'arbre d'entrée 4 et qui génère une aspiration-refoulement dans une chambre annulaire autour de l'arbre 4. Par exemple, une pompe à excentrique mono-palette ou une pompe à engrenages peut être mise en oeuvre en remplacement de la pompe trochoïde mentionnée ci-dessus.Alternatively, alternatively to a trochoid pump, the machine 2 can be equipped with any pump which can be traversed by the input shaft 4 and which generates a suction-discharge in an annular chamber around the shaft 4. For example a single-vane eccentric pump or a gear pump can be implemented to replace the trochoid pump mentioned above.

En variante également, la pompe 72 peut être traversée et entraînée par l'arbre 8 alternativement à l'arbre 4, ou tout autre arbre appartenant aux moyens d'entraînement des leviers 16 en oscillation.Alternatively also, the pump 72 can be traversed and driven by the shaft 8 alternately to the shaft 4, or any other shaft belonging to the drive means of the levers 16 in oscillation.

A titre d'exemple non limitatif, la pompe 72 est conçue pour mettre le lubrifiant en circulation dans le circuit C2 de la machine 2 avec un débit de 6 I/m (litres par minute), dans le cas où la vitesse de rotation de l'arbre 4 est de 900 tr/min (tours par minute).By way of non-limiting example, the pump 72 is designed to put the lubricant in circulation in the circuit C2 of the machine 2 with a flow rate of 6 I / m (liters per minute), in the case where the speed of rotation of the shaft 4 is 900 rpm (revolutions per minute).

Par ailleurs, un conduit 122 de distribution de lubrifiant est ménagé à l'intérieur de l'arbre commun 12, et s'étend de façon coaxiale avec l'axe X12, comme cela est visible notamment aux figures 1 et 2. Une paroi tubulaire 124, dont la section est en forme d'anneau à section circulaire, appartenant à l'arbre commun 12, délimite de façon périphérique le conduit de distribution 122 et est coaxiale à l'axe X12. La paroi tubulaire 124 forme ainsi avantageusement la paroi du conduit 122, et délimite un espace intérieur dans lequel le lubrifiant est destiné à circuler. L'arbre 12 est ainsi un arbre creux et tubulaire au sein duquel circule le lubrifiant. Les leviers oscillants 16 sont en pratique montés sur la paroi tubulaire 124, autour de cette dernière, par l'intermédiaire par exemple de roulements à rouleaux non illustrés. Des orifices de distribution 126 de lubrifiant sont ménagés au travers de la paroi tubulaire 124 le long de la première partie 30 de l'arbre 12 sur laquelle sont montés les leviers 16. Le conduit de distribution 122 est ainsi mis en communication avec l'extérieur de l'arbre commun 12, de sorte que les leviers 16 en cours d'oscillation sont lubrifiés par du lubrifiant qui s'échappe du conduit de distribution 122 par l'intermédiaire des orifices de distribution 126. En pratique, les orifices 126 distribuent du lubrifiant aux pièces en friction à l'extérieur de l'arbre commun, aux butées axiales 18 ainsi qu'aux roulements, non illustrés, par l'intermédiaire desquels les leviers 16 sont montés sur l'arbre 12. Ainsi, ce dernier cumule les fonctions d'arbre commun de support des leviers 16 et d'organe de distribution du système de lubrification.Furthermore, a lubricant distribution duct 122 is formed inside the common shaft 12, and extends coaxially with the axis X12, as can be seen in particular in FIGS. figures 1 and 2 . A tubular wall 124, the section of which is in the form of a circular ring, belonging to the common shaft 12, delimits peripherally the distribution duct 122 and is coaxial with the axis X12. The tubular wall 124 thus advantageously forms the wall of the duct 122, and delimits an interior space wherein the lubricant is for circulation. The shaft 12 is thus a hollow tubular shaft within which the lubricant circulates. The oscillating levers 16 are in practice mounted on the tubular wall 124 around the latter, for example by means of roller bearings (not shown). Lubricant dispensing orifices 126 are formed through the tubular wall 124 along the first portion 30 of the shaft 12 on which the levers 16 are mounted. The distribution duct 122 is thus placed in communication with the outside. of the common shaft 12, so that the levers 16 being oscillated are lubricated by lubricant which escapes from the distribution duct 122 through the dispensing orifices 126. In practice, the orifices 126 distribute the lubricant to the friction parts outside the common shaft, the axial stops 18 and the bearings, not shown, by means of which the levers 16 are mounted on the shaft 12. Thus, the latter accumulates the functions of the common support shaft of the levers 16 and the distribution member of the lubrication system.

Le conduit de distribution 122 s'étend entre une première extrémité 128 amont qui est située au voisinage du plan P26 de la première platine 26 et une deuxième extrémité 132 aval qui est située au voisinage du plan P28 de la deuxième platine 28. A partir de la première extrémité 128, l'arbre 12 comprend un conduit d'alimentation 130 qui s'étend radialement par rapport à l'axe X12 en prolongeant le conduit 122, le conduit 130 débouchant que la surface radiale externe de la première extrémité 34 de l'arbre 12 comme visible aux figures 1 et 6. L'alimentation en lubrifiant du conduit de distribution 122 est ainsi effectuée de façon radiale par rapport à l'axe X12, à travers le conduit 130. Un conduit de sortie 134 prolonge radialement le conduit 122, par rapport à l'axe X12, au niveau de la deuxième extrémité 132. Le conduit de sortie 134 s'étend selon une direction parallèle à celle du conduit d'alimentation 130 et débouche sur la surface radiale externe de la section intermédiaire 36 de l'arbre 12, comme visible aux figures 8 et 9. Le lubrifiant est ainsi destiné à circuler dans le conduit de distribution 122 depuis le conduit d'alimentation 130 jusqu'aux orifices de distribution 126 et au conduit de sortie 134.The distribution duct 122 extends between an upstream first end 128 which is situated in the vicinity of the plane P26 of the first plate 26 and a second downstream end 132 which is situated in the vicinity of the plane P28 of the second plate 28. From the first end 128, the shaft 12 comprises a supply duct 130 which extends radially with respect to the axis X12 by extending the duct 122, the duct 130 opening out that the radial outer surface of the first end 34 of the 'tree 12 as visible to figures 1 and 6 . The lubricant supply of the distribution duct 122 is thus carried out radially with respect to the axis X12, through the duct 130. An outlet duct 134 radially extends the duct 122, with respect to the axis X12, to the the second end 132. The outlet duct 134 extends in a direction parallel to that of the supply duct 130 and opens on the outer radial surface of the intermediate section 36 of the shaft 12, as visible at Figures 8 and 9 . The lubricant is thus intended to circulate in the distribution duct 122 from the supply duct 130 to the dispensing orifices 126 and to the outlet duct 134.

Lorsque l'arbre 12 est en position de tissage, le conduit d'alimentation 130 est placé en vis-à-vis et en contact, préférentiellement étanche, avec un conduit de transfert 136 ménagé dans la première platine 26. En l'espèce, le conduit 136 débouche en surface du fond 40 de l'évidement 38 et est coaxial avec l'axe X38. Un orifice 136A formant le débouché du conduit 136 est visible à la figure 7, sur le fond 40. Ainsi, en position de tissage, le conduit de transfert 136, qui appartient au circuit C2 de lubrifiant, alimente en lubrifiant le conduit de distribution 122, à travers le conduit 130. En position de nivelage, le contact entre le conduit de transfert 136 et le conduit d'alimentation 130 est interrompu dans la mesure où l'arbre 12 est écarté du fond 40. De manière avantageuse, en position de nivelage, la rotation des arbres 4 et 8 est interrompue, de sorte que la pompe 72 est arrêtée.When the shaft 12 is in the weaving position, the supply duct 130 is placed facing and in contact, preferably sealed, with a transfer duct 136 formed in the first plate 26. In this case, the conduit 136 opens on the surface of the bottom 40 of the recess 38 and is coaxial with the axis X38. An orifice 136A forming the outlet of the conduit 136 is visible at the figure 7 , on the bottom 40. Thus, in the weaving position, the transfer duct 136, which belongs to the lubricant circuit C2, lubricates the supply duct 122, through the duct 130. In the leveling position, the contact between the transfer duct 136 and the supply duct 130 is interrupted to the extent that the shaft 12 is spaced from the bottom 40. Advantageously, in the leveling position, the rotation of the shafts 4 and 8 is interrupted, so that the pump 72 is stopped.

Par ailleurs, la pompe 72, et en particulier le conduit de refoulement 90 du canal de refoulement 80 est connecté à un conduit secondaire 138 du circuit C2 de lubrifiant. Ce conduit secondaire 138 est ménagé dans le fond 14 du bâti 6 et relie une première partie 142 du conduit 138 à un conduit d'apport 140 ménagé dans la première platine 26, le conduit d'apport 140 étant lui-même relié au conduit d'alimentation 130 de l'arbre 12 par le conduit de transfert 136 de la première platine. Le conduit secondaire 138, le conduit d'apport 140 et le conduit de transfert 136 constituent ainsi un premier ensemble continu de conduits qui sont ménagés dans le bâti 6 pour conduire le lubrifiant depuis le canal de refoulement 80 de la pompe 72 jusqu'au conduit d'alimentation 130 de l'organe de distribution.Furthermore, the pump 72, and in particular the discharge duct 90 of the discharge channel 80 is connected to a secondary duct 138 of the lubricant circuit C2. This secondary duct 138 is formed in the bottom 14 of the frame 6 and connects a first portion 142 of the duct 138 to a delivery duct 140 formed in the first plate 26, the supply duct 140 being itself connected to the duct. supply 130 of the shaft 12 through the transfer conduit 136 of the first plate. The secondary duct 138, the supply duct 140 and the transfer duct 136 thus constitute a first continuous set of ducts which are formed in the frame 6 to drive the lubricant from the discharge duct 80 of the pump 72 to the duct supply 130 of the dispenser member.

En l'espèce, le conduit 138 comprend la première partie 142 qui débouche en surface du fond 14 de manière à être en vis-à-vis et en contact, préférentiellement étanche, avec l'ouverture de refoulement inférieure 94 du conduit de refoulement 90, lorsque la pompe 72 est montée sur le bâti 6. On comprend que l'ouverture 94 débouche directement dans la première partie 142 du conduit 138, sans moyen de connexion intermédiaire. Cette première partie 142 est coaxiale avec le conduit 90 de sorte que le lubrifiant circule depuis le conduit 90 jusqu'à la première partie 142 du conduit 138. Le conduit secondaire 138 comprend une deuxième partie 144, qui est intermédiaire et qui prolonge la première partie 142 dans le plan du fond 14, perpendiculairement à la première partie 142. La deuxième partie 144 s'étend depuis le dessous de la pompe 72 jusqu'au-dessous de la première platine 26. Le conduit secondaire 138 comprend enfin une troisième partie 146 qui prolonge la deuxième partie 144, perpendiculairement à cette dernière et parallèlement à la première partie 142, en direction du capot de la machine 2. La troisième partie 146 s'étend au sein du fond 14 de manière à ce que, lorsque la platine 26 est assemblée sur le fond 14, la troisième partie 146 débouche en surface du fond 14 en vis-à-vis et en contact, préférentiellement étanche, avec l'orifice d'entrée du conduit d'apport 140 de la platine 26. Le conduit secondaire 138 forme ainsi un U, comme cela est visible aux figures 1 et 2.In this case, the duct 138 comprises the first portion 142 which opens on the surface of the bottom 14 so as to be in facing relation and in contact, preferably sealed, with the lower discharge opening 94 of the discharge pipe 90 , when the pump 72 is mounted on the frame 6. It is understood that the opening 94 opens directly into the first portion 142 of the conduit 138, without intermediate connection means. This first portion 142 is coaxial with the conduit 90 so that the lubricant flows from the conduit 90 to the first portion 142 of the conduit 138. The secondary conduit 138 comprises a second portion 144, which is intermediate and which extends the first part 142 in the plane of the bottom 14, perpendicularly to the first portion 142. The second portion 144 extends from the bottom of the pump 72 to below the first plate 26. The secondary conduit 138 finally comprises a third portion 146 which extends the second portion 144, perpendicular to the latter and parallel to the first portion 142, towards the hood of the machine 2. The third portion 146 extends within the bottom 14 so that when the plate 26 is assembled on the bottom 14, the third portion 146 opens on the surface of the bottom 14 vis-à-vis and in contact, preferably sealed, with the inlet port of the supply duct 140 of the The secondary conduit 138 thus forms a U, as can be seen in FIGS. figures 1 and 2 .

Le conduit d'apport 140 est sensiblement rectiligne et s'étend dans le plan P26 perpendiculairement au conduit de transfert 136. A la figure 2, compte-tenu de l'angle de perspective, la partie coupée de la platine 26 où sont situés les conduits 136 et 140 n'est pas visible.The supply duct 140 is substantially rectilinear and extends in the plane P26 perpendicular to the transfer duct 136. At the figure 2 given the angle of perspective, the cut portion of the plate 26 where are located the conduits 136 and 140 is not visible.

On comprend que le montage de la pompe 72 sur le bâti 6 et de la platine 26 sur le fond 14 met en communication le canal de refoulement 80 de la pompe 72 avec le conduit d'apport 140. La pompe 72 refoule ainsi du lubrifiant jusqu'aux conduits 130 et 122 et de là aux orifices de distribution 126, vers les leviers oscillants 16.It is understood that the mounting of the pump 72 on the frame 6 and the plate 26 on the bottom 14 communicates the discharge channel 80 of the pump 72 with the supply conduit 140. The pump 72 thus delivers lubricant up to to the conduits 130 and 122 and thence to the dispensing orifices 126 to the oscillating levers 16.

Une sonde de détection 148, visible notamment aux figures 8 et 9, est prévue pour détecter la présence de lubrifiant dans le circuit C2. La sonde 148 est montée sur la deuxième platine 28, au sommet de cette dernière, de façon à être placée dans le circuit C2 en aval des orifices de distribution 126 de l'organe de distribution. Le circuit C2 de lubrifiant comprend un conduit de sonde 150 qui est ménagé au sein de la deuxième platine 28 dans le plan P28 et qui est connecté à la sonde 148. Le conduit de sonde 150 forme un ensemble de conduits, par exemple rectilignes ou courbes, connectés fluidiquement au circuit C2. Préférentiellement, le conduit de sonde 150 forme une succession de conduits rectilignes, parmi lesquels un conduit annexe 152 du circuit C2, le conduit annexe 152 étant placé en vis-à-vis et en contact avec le conduit de sortie 134 lorsque l'arbre 12 est en position de tissage. Le conduit de sortie 134 de l'arbre 12 est relié au conduit de sonde 150 par le conduit annexe 152. Le conduit de sortie 134 est de préférence coaxial avec l'axe X44 lorsque l'arbre 12 est en position de tissage et débouche en surface du fond 46 de l'évidement 44. Un orifice 152A forme le débouché du conduit de sonde 150, au niveau du conduit annexe 152. Ainsi, en position de tissage, le conduit de sortie 134, qui appartient au circuit C2 de lubrifiant et alimenté par le conduit de distribution 122 de l'arbre commun 12, alimente en lubrifiant le conduit de sonde 150 à travers le conduit annexe 152. La mise en position de nivelage de l'arbre 12 écarte le conduit de sortie 134 et le conduit annexe 150 l'un de l'autre, comme visible à la figure 9. Comme visible à la figure 9, en position de nivelage, le conduit de sortie 134, et donc le conduit d'alimentation 130, sont orientés à l'oblique vers le haut. En effet, entre la position de tissage et la position de nivelage, l'arbre 12 est non seulement déplacé le long de des axes X38 et X44, mais a aussi pivoté d'un angle compris entre 0 et 90° autour de son axe X12, par rapport au bâti 6. En position de nivelage, la pompe 72 est arrêtée.A detection probe 148, visible in particular to Figures 8 and 9 , is provided to detect the presence of lubricant in the circuit C2. The probe 148 is mounted on the second plate 28, at the top of the latter, so as to be placed in the circuit C2 downstream of the dispensing orifices 126 of the dispenser member. The lubricant circuit C2 comprises a probe duct 150 which is formed within the second plate 28 in the plane P28 and which is connected to the probe 148. The probe duct 150 forms a set of ducts, for example rectilinear or curved ducts. , fluidly connected to the circuit C2. Preferably, the probe duct 150 forms a succession of rectilinear ducts, among which an annex duct 152 of the circuit C2, the annex duct 152 being placed facing each other and in contact with the outlet duct 134 when the shaft 12 is in the weaving position. The outlet duct 134 of the shaft 12 is connected to the probe duct 150 via the annex duct 152. The outlet duct 134 is preferably coaxial with the axis X44 when the shaft 12 is in the weaving position and opens into bottom surface 46 of the recess 44. An orifice 152A forms the outlet of the probe duct 150, at the level of the annex duct 152. Thus, in the weaving position, the outlet duct 134, which belongs to the circuit C2 of lubricant and supplied by the distribution duct 122 of the common shaft 12, lubricating the probe duct 150 through the duct annex 152. The setting leveling position of the shaft 12 away from the outlet duct 134 and the duct annex 150 of each other, as visible in the figure 9 . As visible at figure 9 in the leveling position, the outlet duct 134, and therefore the supply duct 130, are oriented obliquely upwards. Indeed, between the weaving position and the leveling position, the shaft 12 is not only moved along the X38 and X44 axes, but also rotated by an angle between 0 and 90 ° around its axis X12 , relative to the frame 6. In the leveling position, the pump 72 is stopped.

La sonde de détection 148 comprend un flotteur 154 qui baigne dans un réservoir 156 de lubrifiant ménagé dans la platine 28. Le flotteur 154 est monté mobile en translation verticale sur un capteur 158, lequel est en forme de tige, de la sonde 148. Ce capteur 158 est apte à envoyer un signal d'alerte à une unité de contrôle de la machine 2 dans le cas où le niveau d'huile dans le réservoir est en-deçà d'un seuil prédéterminé, situation dans laquelle le flotteur 154 est dans une position prédéterminée située vers le bas du réservoir 156. Le conduit de sonde 150 relie le réservoir 156 de la sonde 148 au conduit annexe 152.The detection probe 148 comprises a float 154 which is immersed in a reservoir 156 of lubricant formed in the plate 28. The float 154 is mounted to move in vertical translation on a sensor 158, which is in the form of a rod, of the probe 148. This sensor 158 is able to send an alert signal to a control unit of the machine 2 in the case where the oil level in the tank is below a predetermined threshold, situation in which the float 154 is in a predetermined position located towards the The bottom of the reservoir 156. The probe conduit 150 connects the reservoir 156 of the probe 148 to the annex conduit 152.

Le système de lubrification comprend également une poche de collecte 160 de lubrifiant situé dans le bâti 6. L'admission de lubrifiant dans la poche de collecte 160 est effectué sous l'action d'aspiration de la pompe 72, de sorte que le lubrifiant est aspiré dans la poche 160. Cette dernière est ménagée dans le fond 14, de préférence au point le plus bas de la machine 2, de manière à ce que tout le lubrifiant contenu dans le bâti 6 puisse être collecté.The lubrication system also includes a lubricant collection bag 160 located in the housing 6. The lubricant intake into the collection bag 160 is effected under the suction action of the pump 72, so that the lubricant is The latter is drawn into the bottom 14, preferably at the lowest point of the machine 2, so that all the lubricant contained in the frame 6 can be collected.

La machine 2 comprend un système de filtrage du lubrifiant du circuit qui inclut au moins un organe de filtrage amont 162, qui est rapporté sur le bâti 6 de façon à pouvoir être entretenu ou remplacé facilement. En l'espèce, l'organe de filtrage amont 162 est de forme générale allongée le long d'un axe X162 et est logé dans un fourreau 164 du bâti 6, qui s'élève à partir du fond 14 selon un axe oblique coaxial avec l'axe X162. De préférence, l'organe de filtrage 162 est vissé dans son fourreau 164 par son extrémité inférieure 171, de sorte qu'une extrémité supérieure 170 de l'organe 162 est accessible depuis l'extérieur du bâti 6, en traversant le côté 62 de la paroi périphérique 56 du bâti 6. L'extrémité inférieure 171 est orientée en direction du fond 14 et l'extrémité supérieure 170 dans une direction opposée le long de l'axe X162. Un bouchon 172 de protection de l'organe de filtrage 162 est vissé sur le fourreau 164 à l'extrémité supérieure 170 de façon coaxiale avec l'axe X162.The machine 2 comprises a lubricant filtering system of the circuit which includes at least one upstream filtering member 162, which is attached to the frame 6 so that it can be serviced or replaced easily. In this case, the upstream filtering member 162 is generally elongate along an axis X162 and is housed in a sleeve 164 of the frame 6, which rises from the bottom 14 along an oblique axis coaxial with the X162 axis. Preferably, the filter member 162 is screwed into its sleeve 164 by its lower end 171, so that an upper end 170 of the member 162 is accessible from outside the frame 6, passing through the side 62 of the peripheral wall 56 of the frame 6. The lower end 171 is oriented towards the bottom 14 and the upper end 170 in an opposite direction along the axis X162. A plug 172 for protecting the filter member 162 is screwed onto the sleeve 164 at the upper end 170 coaxially with the axis X162.

L'organe de filtrage 162 définit un conduit 166, coaxial avec l'axe X162, qui s'étend depuis la poche de collecte 160 jusqu'à une extrémité haute voisine d'un aimant permanent 168 de l'organe de filtrage 162, lui-même situé à l'extrémité supérieure 170, sous le bouchon 172. L'aimant 168 collecte des éventuels débris métalliques et la limaille contenus dans le lubrifiant. L'organe de filtrage 162 comprend en outre un filtre tubulaire 174, ou crépine, qui est disposé autour du conduit 166 et au travers duquel le lubrifiant est destiné à être filtré en circulant dans une direction axiale orientée vers le bas, par rapport à l'axe X162, jusqu'à un compartiment interne 176 du circuit disposé au-dessus de la poche de collecte 160. Le compartiment interne 176 s'étend sur une portion de la circonférence et de la hauteur du filtre tubulaire 174, de sorte que le lubrifiant est extrait radialement de ce filtre tubulaire 174 pour être déversé dans le compartiment interne 176. De préférence, la poche de collecte 160 et le compartiment interne 176 viennent de matière avec le fond 14. En variante, ils peuvent constituer des éléments rapportés sur le fond 14. Le compartiment 176 reçoit ainsi le lubrifiant après son filtrage dans l'organe de filtrage 162, sous l'action de l'aspiration de la pompe 72. L'organe de filtrage 162 filtre le lubrifiant du circuit C2 avant son passage dans le canal d'aspiration 78 de la pompe.The filtering member 162 defines a duct 166, coaxial with the axis X162, which extends from the collection bag 160 to a neighboring upper end of a permanent magnet 168 of the filtering member 162. - Even located at the upper end 170, under the cap 172. The magnet 168 collects any metal debris and the filings contained in the lubricant. The filter member 162 further comprises a tubular filter 174, or strainer, which is disposed around the conduit 166 and through which the lubricant is intended to be filtered while circulating in a downward axial direction, relative to the X162 axis, up to an internal compartment 176 of the circuit disposed above the collection bag 160. The inner compartment 176 extends over a portion of the circumference and the height of the tubular filter 174, so that the lubricant is extracted radially from this tubular filter 174 to be poured into the internal compartment 176. Preferably, the collection bag 160 and the inner compartment 176 are made of material with the bottom 14. Alternatively, they may constitute elements on the 14. The compartment 176 thus receives the lubricant after its filtering in the body of filtering 162, under the action of the suction of the pump 72. The filtering member 162 filters the lubricant of the circuit C2 before it passes through the suction channel 78 of the pump.

En variante, la machine 2 comprend un organe de filtrage aval qui filtre le lubrifiant du circuit après son passage dans le canal de refoulement 80. Un tel organe de filtrage aval est alors connecté au circuit C2 entre la pompe 72 et le conduit de distribution 122, c'est-à-dire par exemple en série sur le conduit secondaire 138. Dans ce cas, l'organe de filtrage amont 162 est optionnel.In a variant, the machine 2 comprises a downstream filtering member which filters the lubricant of the circuit after it has passed through the discharge channel 80. Such a downstream filtering member is then connected to the circuit C2 between the pump 72 and the distribution duct 122 , ie for example in series on the secondary conduit 138. In this case, the upstream filtering member 162 is optional.

Le circuit C2 comprend enfin un conduit primaire 178 qui relie le compartiment 176 au canal d'aspiration 78 de la pompe 72. Le conduit primaire 178 est ménagé dans le fond 14 du bâti 6 et comprend une première partie 180 sensiblement horizontale, qui s'étend à partir du compartiment 176 selon un axe parallèle à l'axe X4. Le conduit primaire 178 comprend une deuxième partie 182 qui débouche en surface du fond 14 de manière à être en vis-à-vis et en contact, préférentiellement étanche, avec l'ouverture inférieure d'aspiration 92 du conduit d'aspiration 88 de la pompe 72 lorsque la pompe est montée sur le fond 14. On comprend que l'ouverture 92 débouche directement dans la deuxième partie 182 du conduit 178, sans moyen de connexion intermédiaire. En l'espèce, la deuxième partie 182 est alors coaxiale avec le conduit d'aspiration 88 de sorte que le lubrifiant circule depuis la deuxième partie 182 jusqu'au conduit 88. Les parties 180 et 182 du conduit primaire 178 sont perpendiculaires.The circuit C2 finally comprises a primary conduit 178 which connects the compartment 176 to the suction channel 78 of the pump 72. The primary conduit 178 is formed in the bottom 14 of the frame 6 and comprises a substantially horizontal first portion 180, which is extends from the compartment 176 along an axis parallel to the axis X4. The primary duct 178 comprises a second portion 182 which opens at the surface of the bottom 14 so as to face and contact, preferably sealed, with the lower suction opening 92 of the suction duct 88 of the pump 72 when the pump is mounted on the bottom 14. It is understood that the opening 92 opens directly into the second portion 182 of the conduit 178, without intermediate connection means. In this case, the second portion 182 is then coaxial with the suction duct 88 so that the lubricant flows from the second portion 182 to the duct 88. The parts 180 and 182 of the primary duct 178 are perpendicular.

Le circuit de lubrifiant C2 comprend donc un deuxième ensemble continu de conduits qui sont ménagés dans le bâti 6 pour conduire le lubrifiant depuis un système de filtrage du lubrifiant, jusqu'au canal d'aspiration 78 de la pompe 72. Ce deuxième ensemble comprend en particulier le compartiment interne 176 et le conduit primaire 178.The lubricant circuit C2 thus comprises a second continuous set of ducts which are formed in the frame 6 to drive the lubricant from a lubricant filtering system to the suction channel 78 of the pump 72. particularly the inner compartment 176 and the primary conduit 178.

Les différents conduits susmentionnés du circuit C2 de la machine 2 présentent par exemple un diamètre d'environ 6 mm (millimètres).The various aforementioned conduits of the circuit C2 of the machine 2 have for example a diameter of about 6 mm (millimeters).

En résumé, le circuit C2 de lubrifiant comprend dans l'ordre d'écoulement du lubrifiant: la poche de collecte 160, le fourreau 164, le compartiment interne 176, le conduit primaire 178, le canal d'aspiration 78, les chambres d'aspiration-refoulement du lubrifiant de la pompe 72, le canal de refoulement 80, le conduit secondaire 138, le conduit d'apport 140, le conduit de transfert 136, le conduit d'alimentation 130, le conduit de distribution 122, le conduit de sortie 134, le conduit annexe 152, le conduit de sonde 150 et le réservoir 156. Le circuit C2 est ainsi ménagé dans le bâti 6, l'arbre commun 12 et la pompe 72, de sorte que les différents éléments du bâti 6 tels que le fond 14 et les platines 26 et 28, de l'organe de filtrage 162, de la pompe 72 et de l'arbre 12 connectent entre eux toutes les parties du circuit C2. De manière avantageuse, il n'est pas nécessaire de mettre en oeuvre d'élément additionnel pour former le circuit, du genre conduite flexible, ce qui simplifie le montage et l'entretien de la machine 2. On définit ainsi un procédé de fabrication de la machine 2 dans lequel le fond 14, les platines 26 et 28 et le corps de pompe 74 sont réalisées par moulage puis usinage. Le procédé de fabrication de la machine 2 comprend des étapes de fixation du corps de pompe 74 ainsi que des platines 26 et 28 sur le fond 14, par exemple par vis, ce qui forme le circuit C2.In summary, the lubricant circuit C2 comprises in the flow order of the lubricant: the collection bag 160, the sleeve 164, the internal compartment 176, the primary duct 178, the suction channel 78, the chambers of the lubricant. suction-discharge of the lubricant of the pump 72, the delivery channel 80, the secondary duct 138, the supply duct 140, the transfer duct 136, the supply duct 130, the distribution duct 122, the duct outlet 134, the annex duct 152, the probe duct 150 and the reservoir 156. The circuit C2 is thus formed in the frame 6, the common shaft 12 and the pump 72, so that the various elements of the frame 6 such as the bottom 14 and the plates 26 and 28, the filter member 162, the pump 72 and the shaft 12 connect together all the parts of the circuit C2. Advantageously, it is not it is necessary to use additional element to form the circuit, of the flexible pipe type, which simplifies the assembly and maintenance of the machine 2. Thus, a method of manufacturing the machine 2 in which the bottom 14, the plates 26 and 28 and the pump body 74 are made by molding and machining. The manufacturing method of the machine 2 comprises steps of fixing the pump body 74 and the plates 26 and 28 on the bottom 14, for example by screws, which forms the circuit C2.

Dans le présent document par « connexion » ou « liaison fluidique » ou « connexion fluidique », on entend qu'il existe dans une configuration de circuit connecté, un passage, un canal ou un conduit aménagé dans une ou plusieurs pièces de la machine permettant la circulation de fluide entre deux organes ou deux espaces de cette machine.In the present document by "connection" or "fluidic connection" or "fluidic connection", it is meant that there exists in a connected circuit configuration, a passage, channel or conduit arranged in one or more parts of the machine allowing the circulation of fluid between two organs or two spaces of this machine.

Certains conduits du bâti 6 et de la pompe 72 sont, par exemple, réalisés par usinage, en particulier par perçage, notamment pour les conduits formés de parties rectilignes, tels que le conduit primaire 178, le conduit d'apport 140, le conduit de transfert 136, le conduit annexe 152, le conduit de sonde 150, le conduit d'aspiration 88, ou le conduit de refoulement 90. L'ouïe d'aspiration 84 et l'ouïe de refoulement 90 sont, par exemple, réalisés par fraisage du corps de pompe 74, dont l'ébauche est préalablement réalisée par moulage. Les autres conduits, tels que le conduit secondaire 138, peuvent être réalisés au cours d'une étape de moulage de la pièce du bâti 6 concernée, à l'aide de noyaux ou d'inserts métalliques creux introduits dans le moule de la pièce concernée, en particulier le moule de formation du fond 14.Some ducts of the frame 6 and of the pump 72 are, for example, made by machining, in particular by drilling, in particular for the ducts formed of rectilinear parts, such as the primary duct 178, the supply duct 140, the duct transfer 136, the annex duct 152, the probe duct 150, the suction duct 88, or the discharge duct 90. The suction duct 84 and the discharge duct 90 are, for example, made by milling pump body 74, the blank of which is previously produced by molding. The other ducts, such as the secondary duct 138, can be made during a molding step of the part of the frame 6 concerned, using cores or hollow metal inserts introduced into the mold of the part concerned. , in particular the bottom forming mold 14.

De manière optionnelle, le circuit C2 comprend des conduits de lubrifiant, non illustrés, pour lubrifier l'engrènement de la roue d'entraînement 10 avec la roue de réception 11.Optionally, the circuit C2 comprises lubricant conduits, not shown, for lubricating the engagement of the drive wheel 10 with the receiving wheel 11.

De manière optionnelle, des joints d'étanchéité sont prévus pour rendre étanche la connexion par contact entre deux éléments du circuit C2 de la machine 2. Par exemple, chacune des ouvertures 90 et 92 est pourvue d'un lamage d'accueil, ménagé en surface de la face inférieure 96, pour un joint d'étanchéité, du genre joint torique ou un joint plat, non illustré.Optionally, seals are provided to seal the contact connection between two elements of the circuit C2 of the machine 2. For example, each of the openings 90 and 92 is provided with a reception counterbore, made of surface of the lower face 96, for a gasket, of the O-ring type or a flat gasket, not shown.

La machine 2 décrite ci-avant est de type mécanique à cames. A titre de variante, le système de lubrification peut être intégré sur une machine de formation de la foule du type ratière rotative, dans laquelle, en substance, l'arbre 8 à cames 20 est remplacé par un arbre principal pourvu d'éléments d'actionnement excentriques appartenant à des unités d'entraînement pour entraîner les leviers oscillants 16 montés sur un arbre commun parallèle à l'arbre principal, les éléments d'actionnement étant reliés aux leviers 16 par des bielles.The machine 2 described above is of the mechanical cam type. Alternatively, the lubrication system may be integrated on a rotating dobby-type mowing machine, in which, in essence, the camshaft 20 is replaced by a main shaft provided with rotating elements. eccentric actuations belonging to drive units for driving oscillating levers 16 mounted on a shaft common parallel to the main shaft, the actuating elements being connected to the levers 16 by connecting rods.

Dans cette ratière rotative, l'organe de distribution de lubrifiant est venu de matière avec, ou est rapporté sur, le bâti. L'organe de distribution est relié fluidiquement au canal de refoulement de la pompe, et est apte à alimenter au moins une conduite de lubrifiant aménagée dans le bâti et des platines rapportées, et débouchant sur des organes à lubrifier de la machine, qui sont conçus pour être en mouvement. Ces organes à lubrifier sont par exemple des organes d'engrènement conique d'entrainement, un modulateur de l'arbre principal, l'arbre commun sur lequel sont montés les leviers de sortie, des zones de frottement des leviers de sortie, ou toute autre liaison mécanique nécessitant un apport en lubrifiant.In this rotary dobby, the lubricant dispenser member is integral with, or is attached to, the frame. The dispensing member is fluidly connected to the delivery channel of the pump, and is adapted to feed at least one lubricant duct arranged in the frame and plates reported, and opening on the machine's lubrication members, which are designed to be in motion. These elements to be lubricated are, for example, conical drive meshing members, a modulator of the main shaft, the common shaft on which the output levers are mounted, zones of friction of the output levers, or any other mechanical connection requiring a supply of lubricant.

Selon une autre variante, le système de lubrification peut être intégré à une machine de formation de la foule, du genre mécanique à cames, dont l'arbre commun est nivelé par des éléments excentriques, comme dans l'exemple décrit dans FR-A-2 868 090 .According to another variant, the lubrication system can be integrated in a crowd-forming machine, of the mechanical cam type, whose common shaft is leveled by eccentric elements, as in the example described in FIG. FR-A-2,868,090 .

Selon une autre variante non représentée, la première platine 26 est connectée fluidiquement au conduit de distribution 122 de l'arbre commun 12 en bout d'arbre et de façon axiale par rapport à l'axe X12, de telle sorte qu'en position de tissage de la machine, le conduit de transfert 136 alimente le conduit de distribution 122 de l'arbre commun 12 de façon coaxiale à travers un orifice placé en vis-à-vis du conduit de distribution 122.According to another variant not shown, the first plate 26 is fluidly connected to the distribution pipe 122 of the common shaft 12 at the end of the shaft and axially with respect to the axis X12, so that in the position of weaving the machine, the transfer duct 136 feeds the distribution duct 122 of the common shaft 12 coaxially through an orifice placed opposite the distribution duct 122.

Selon une autre variante, la seconde platine 28 est connectée fluidiquement au conduit de distribution 122 de l'arbre commun 12 en bout d'arbre et de façon axiale par rapport à l'axe X12, de telle sorte qu'en position de tissage de la machine, le conduit de distribution 122 alimente le conduit annexe 152 de façon coaxiale à travers un orifice dans l'axe du conduit de distribution.According to another variant, the second plate 28 is fluidly connected to the distribution duct 122 of the common shaft 12 at the end of the shaft and axially with respect to the axis X12, so that in the weaving position of the machine, the distribution duct 122 supplies the duct 152 annexed coaxially through an orifice in the axis of the distribution duct.

En variante, des pièces intermédiaires rapportées sur les première 26 et deuxième 28 platines peuvent connecter fluidiquement respectivement le conduit de transfert 136 et le conduit annexe 152 au conduit de distribution 122 de l'arbre 12.As a variant, intermediate parts attached to the first 26 and second 28 platens can respectively fluidly connect the transfer duct 136 and the annex duct 152 respectively to the distribution duct 122 of the shaft 12.

En variante, le corps de pompe 74 vient de matière avec le fond 14 de telle sorte que le corps de pompe 74 est intégré au bâti 6. Selon cette variante, le canal d'aspiration 78 du corps de pompe est confondu avec la seconde partie 182 du conduit primaire 178. De même, le canal de refoulement 80 est confondu avec la première partie 142 du conduit secondaire 138.Alternatively, the pump body 74 is made of material with the bottom 14 so that the pump body 74 is integrated with the frame 6. According to this variant, the suction channel 78 of the pump body is merged with the second part. 182 of the primary duct 178. Similarly, the discharge duct 80 coincides with the first portion 142 of the secondary duct 138.

Que la machine 2 de l'invention soit une ratière ou une mécanique à cames, ou un autre type de machine de formation de la foule, des conduites d'aspiration et de refoulement non illustrées sont avantageusement aménagées dans le bâti 6, pour connecter le circuit de lubrifiant C2 à un système de refroidissement du lubrifiant rapporté sur la machine.Whether the machine 2 of the invention is a dobby or a cam mechanism, or another type of crowd forming machine, suction and discharge lines not illustrated are advantageously arranged in the frame 6, to connect the lubricant circuit C2 to a lubricant cooling system attached to the machine.

Les différents modes de réalisation et variantes décrits dans ce qui précède peuvent être combinés pour créer de nouveaux modes de réalisation.The various embodiments and variants described in the foregoing may be combined to create new embodiments.

Claims (15)

Machine (2) de formation de la foule, pour un métier à tisser, la machine de formation de la foule comprenant des leviers oscillants (16) de sortie, qui sont montés mobiles en rotation autour d'un arbre commun (12) qui appartient à la machine et qui est monté sur un bâti (6) de la machine, la machine de formation de la foule comprenant un système de lubrification, qui comprend : - un circuit de lubrifiant (C2), - une pompe (72) de mise en circulation du lubrifiant au sein du circuit de lubrifiant, cette pompe comprenant un corps de pompe (74) et au moins un organe de pompage (98, 100) mobile dans le corps de pompe, le corps de pompe étant pourvu d'un canal d'aspiration (78) de lubrifiant, et d'un canal de refoulement (80) de lubrifiant, qui est connecté à un conduit secondaire (138) du circuit de lubrifiant, le conduit secondaire étant ménagé dans le bâti, - un organe (12) de distribution du lubrifiant vers au moins un organe (16) à lubrifier de la machine (2), l'organe de distribution étant connecté au conduit secondaire du circuit de lubrifiant, la machine (2) étant caractérisée en ce que le canal d'aspiration (78) de lubrifiant est connecté à un conduit primaire (178) du circuit de lubrifiant, le conduit primaire étant ménagé dans le bâti (6), et en ce que le canal d'aspiration (78) est en vis-à-vis et débouche sur le conduit primaire (178) et le canal de refoulement (80) est en vis-à-vis et débouche sur le conduit secondaire (138).A shedding machine (2) for a loom, the shedding machine comprising swinging output levers (16) which are rotatably mounted about a common shaft (12) which is to the machine and which is mounted on a frame (6) of the machine, the shedding machine comprising a lubrication system, which comprises: a lubricant circuit (C2), - A pump (72) for circulating the lubricant in the lubricant circuit, this pump comprising a pump body (74) and at least one pumping member (98, 100) movable in the pump body, the body pump having a lubricant suction channel (78) and a lubricant delivery channel (80) connected to a secondary conduit (138) of the lubricant circuit, the secondary conduit being arranged in the frame, a member (12) for dispensing the lubricant to at least one member (16) for lubricating the machine (2), the dispensing member being connected to the secondary duct of the lubricant circuit, the machine (2) being characterized in that the suction channel (78) of lubricant is connected to a primary duct (178) of the lubricant circuit, the primary duct being provided in the frame (6), and in that the suction duct (78) faces the primary duct (178) and the discharge duct (80) faces the secondary duct (138). Machine (2) de formation de la foule selon la revendication 1, caractérisée en ce que l'organe de distribution est formé par l'arbre commun (12) qui comprend : - un conduit de distribution (122), qui est ménagé à l'intérieur de l'arbre commun (12) en étant délimité par une paroi tubulaire (124) de l'arbre commun sur laquelle les leviers oscillants (16) sont montés, et - des orifices de distribution (126), qui traversent la paroi tubulaire de façon à mettre en communication le conduit de distribution avec l'extérieur de l'arbre commun. A shedding machine (2) according to claim 1, characterized in that the dispensing member is formed by the common shaft (12) which comprises: - a distribution duct (122), which is formed inside the common shaft (12) being delimited by a tubular wall (124) of the common shaft on which the oscillating levers (16) are mounted, and - Distribution orifices (126), which pass through the tubular wall so as to put the distribution duct into communication with the outside of the common shaft. Machine (2) de formation de la foule selon la revendication 2, caractérisée en ce que le bâti (6) comprend une première platine (26) sur laquelle l'arbre commun (12) est en appui, le circuit de lubrifiant (C2) comprenant un conduit d'apport (140) qui est ménagé dans la première platine, le conduit d'apport étant alimenté en lubrifiant par le conduit secondaire (138), le circuit de lubrifiant comprenant un orifice (136A) alimenté par le conduit d'apport et placé en vis-à-vis avec un conduit d'alimentation (130) de l'arbre commun, qui alimente le conduit de distribution (122) en lubrifiant.Machine (2) for forming the crowd according to claim 2, characterized in that the frame (6) comprises a first plate (26) on which the common shaft (12) bears, the lubricant circuit (C2) comprising a supply duct (140) which is formed in the first plate, the supply duct being fed with lubricant through the duct secondary (138), the lubricant circuit comprising an orifice (136A) fed by the supply duct and placed facing a supply duct (130) of the common shaft, which supplies the duct with distribution (122) of lubricant. Machine (2) de formation de la foule selon l'une quelconque des revendications 2 ou 3, caractérisée en ce que le bâti (6) comprend un deuxième platine (28) sur laquelle l'arbre commun (12) est en appui, le système de lubrification comprenant une sonde (148) de détection de présence de lubrifiant dans le circuit de lubrifiant (C2), la sonde de détection étant montée sur la deuxième platine (28), le circuit de lubrifiant comprenant un conduit de sonde (150) qui est ménagé au sein de la deuxième platine et connecté fluidiquement à la sonde de détection, le conduit de sonde comprenant un orifice (152A) apte à être placé en vis-à-vis avec un conduit de sortie (134) de l'arbre commun alimenté par le conduit de distribution en lubrifiant et qui alimente le conduit de sonde en lubrifiant.Machine (2) for forming the crowd according to any one of claims 2 or 3, characterized in that the frame (6) comprises a second plate (28) on which the common shaft (12) bears, the lubrication system comprising a lubricant detection sensor (148) in the lubricant circuit (C2), the sensor sensor being mounted on the second platen (28), the lubricant circuit comprising a probe conduit (150) which is formed in the second plate and fluidly connected to the detection probe, the probe pipe comprising an orifice (152A) adapted to be placed in facing relation with an outlet pipe (134) of the shaft common fed by the lubricant distribution duct and which supplies the probe duct with lubricant. Machine (2) de formation de la foule selon la revendication 4, caractérisée en ce que l'arbre commun (12) est monté mobile par rapport au bâti (6) entre : - une position de tissage, dans laquelle le conduit de sortie (134) et le conduit de sonde (150) sont en vis-à-vis, en contact et raccordés fluidiquement, et - une position de nivelage, dans laquelle le conduit de sortie et le conduit de sonde (150) sont écartés l'un de l'autre. Machine (2) for forming the shed according to claim 4, characterized in that the common shaft (12) is mounted to move relative to the frame (6) between: a weaving position, in which the outlet duct (134) and the probe duct (150) are in contact with each other, in contact and fluidically connected, and a leveling position, in which the outlet duct and the probe duct (150) are spaced apart from each other. Machine (2) de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend en outre un système de filtrage du lubrifiant du circuit de lubrifiant (C2), le système de filtrage comprenant : - un organe de filtrage amont (162) qui filtre le lubrifiant du circuit de lubrifiant avant son passage dans le canal d'aspiration (78), et/ou - un organe de filtrage aval qui filtre le lubrifiant du circuit de lubrifiant après son passage dans le canal de refoulement (80). A shedding machine (2) according to any one of the preceding claims, characterized in that it further comprises a lubricant filtering system of the lubricant circuit (C2), the filtering system comprising: an upstream filtering member (162) which filters the lubricant from the lubricant circuit before it passes through the suction channel (78), and / or a downstream filtering member which filters the lubricant of the lubricant circuit after passing through the discharge channel (80). Machine (2) de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend un arbre d'entrée (4) qui entraîne les leviers oscillants (16) en mouvement et la pompe (72) en fonctionnement pour mettre le lubrifiant en circulation dans le circuit de lubrifiant (C2) et à travers la pompe entre le conduit primaire (178) et le conduit secondaire (138).A shedding machine (2) according to one of the preceding claims, characterized in that it comprises an input shaft (4) which drives the oscillating levers (16) in motion and the pump (72) in motion. operation to circulate the lubricant in the lubricant circuit (C2) and through the pump between the primary conduit (178) and the secondary conduit (138). Machine (2) de formation de la foule selon la revendication 7, caractérisée en ce que l'arbre d'entrée (4) traverse le corps de pompe (74) de part en part.Machine (2) for forming the crowd according to claim 7, characterized in that the input shaft (4) passes through the pump body (74) from one side to the other. Machine (2) de formation de la foule selon l'une quelconque des revendications 7 ou 8, caractérisée en ce que la pompe (72) comprend des moyens d'inversion (116) qui peuvent être solidarisés au corps de pompe (74) selon deux orientations distinctes, dont une première orientation dans laquelle la pompe (72) entraîne le lubrifiant depuis le canal d'aspiration (78) jusqu'au canal de refoulement (80), lorsque l'arbre d'entrée (4) est en rotation selon un premier sens de rotation, et une deuxième orientation dans laquelle la pompe (72) entraîne le lubrifiant depuis le canal d'aspiration (78) jusqu'au canal de refoulement (80) lorsque l'arbre d'entrée est en rotation selon un second sens de rotation opposé au premier sens de rotation.A machine (2) for forming a crowd according to any of claims 7 or 8, characterized in that the pump (72) comprises reversing means (116) which can be secured to the pump body (74) according to two distinct orientations, including a first orientation in which the pump (72) drives the lubricant from the suction channel (78) to the delivery channel (80), when the input shaft (4) is rotated in a first direction of rotation, and a second orientation in which the pump (72) drives the lubricant from the suction channel (78) to the delivery channel (80) when the input shaft is rotated according to a second direction of rotation opposite to the first direction of rotation. Machine (2) de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce que la pompe (72) est de type trochoïde et comprend des organes de pompage complémentaires entrainant le lubrifiant à travers la pompe.A shedding machine (2) according to any one of the preceding claims, characterized in that the pump (72) is of the trochoid type and comprises complementary pumping members driving the lubricant through the pump. Machine (2) de formation de la foule selon les revendications 9 et 10, prises ensemble, caractérisée en ce que les moyens d'inversion (116) comprennent un couvercle rapporté sur le corps de pompe (74), en ce que les organes de pompage complémentaires incluent un rotor interne (98) et un rotor externe (100) et en ce que le rotor externe (100) est monté rotatif sur le couvercle et le rotor interne (98) monté solidaire de l'arbre (4) de la machine (2), le couvercle étant conçu pour être monté sur le corps de pompe (74) selon au moins deux orientations distinctes autour du rotor interne, définissant deux positions distinctes du rotor externe par rapport au rotor interne dans lesquelles le rotor externe est désaxé par rapport au rotor interne.A machine (2) for forming a crowd according to claims 9 and 10, taken together, characterized in that the reversing means (116) comprise a cover attached to the pump body (74), in that the complementary pumping includes an inner rotor (98) and an outer rotor (100) and in that the outer rotor (100) is rotatably mounted on the lid and the inner rotor (98) integral with the shaft (4) of the machine (2), the cover being designed to be mounted on the pump body (74) in at least two distinct orientations around the inner rotor, defining two distinct positions of the outer rotor with respect to the inner rotor in which the outer rotor is off-axis relative to the internal rotor. Machine (2) de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce que le circuit de lubrifiant (C2) comprend un premier ensemble continu de conduits (136, 138, 140) qui sont ménagés dans le bâti (6) pour conduire le lubrifiant depuis le canal de refoulement (80) jusqu'à un conduit d'alimentation (130) en lubrifiant de l'organe de distribution (12).A shedding machine (2) according to one of the preceding claims, characterized in that the lubricant circuit (C2) comprises a first continuous set of ducts (136, 138, 140) which are formed in the frame ( 6) to drive the lubricant from the discharge channel (80) to a supply line (130) by lubricating the dispensing member (12). Machine (2) de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce que le circuit de lubrifiant (C2) comprend un deuxième ensemble continu de conduits (176, 178) qui sont ménagés dans le bâti (6) pour conduire le lubrifiant depuis un système de filtrage (162) du lubrifiant circulant dans le circuit de lubrifiant, jusqu'au canal d'aspiration (78).A shedding machine (2) according to any of the preceding claims, characterized in that the lubricant circuit (C2) comprises a second continuous set of ducts (176, 178) which are provided in the frame (6) for driving the lubricant from a filtering system (162) of the lubricant circulating in the lubricant circuit to the suction channel (78). Machine de formation de la foule selon l'une quelconque des revendications précédentes, caractérisée en ce que le canal d'aspiration (78) et le conduit primaire (178) sont confondus et en ce que le canal de refoulement (80) et le conduit secondaire (138) sont confondus, le corps de pompe (74) étant monobloc avec le bâti (6).A shedding machine according to any one of the preceding claims, characterized in that the suction channel (78) and the primary duct (178) coincide and in that the delivery duct (80) and the duct secondary (138) are combined, the pump body (74) being integral with the frame (6). Métier à tisser comprenant une machine (2) de formation de la foule conforme à l'une quelconque des revendications précédentes, laquelle forme une ratière rotative ou une mécanique à cames.A loom comprising a shedding machine (2) according to any one of the preceding claims, which forms a rotating dobby or a cam mechanism.
EP16196171.9A 2015-10-29 2016-10-28 Shedding machine and weaving loom comprising such a shedding machine Active EP3162935B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1560366A FR3043098B1 (en) 2015-10-29 2015-10-29 CROWN FORMING MACHINE AND WOVEN WEAR COMPRISING SUCH MOBILE FORMING MACHINE

Publications (2)

Publication Number Publication Date
EP3162935A1 true EP3162935A1 (en) 2017-05-03
EP3162935B1 EP3162935B1 (en) 2018-07-25

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EP16196171.9A Active EP3162935B1 (en) 2015-10-29 2016-10-28 Shedding machine and weaving loom comprising such a shedding machine

Country Status (6)

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EP (1) EP3162935B1 (en)
CN (1) CN106894150B (en)
BR (1) BR102016025227B1 (en)
FR (1) FR3043098B1 (en)
PT (1) PT3162935T (en)
TW (1) TWI712711B (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR3080118A1 (en) * 2018-04-16 2019-10-18 Staubli Faverges ROTARY RATIERE AND WEAVING

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
FR3088653B1 (en) 2018-11-21 2020-12-11 Staubli Sa Ets Cooling device of a shed forming machine of a loom
CN109554812B (en) * 2018-12-28 2024-04-09 约科布·缪勒机械制造(中国)有限公司 Peristaltic pump oil supply system for shuttleless narrow loom

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EP0140800A1 (en) 1983-09-21 1985-05-08 S.A. DES ETABLISSEMENTS STAUBLI (France) Units of draw levers mounted on dobby or other shed-forming mechanisms on looms
EP0535726A1 (en) * 1991-09-20 1993-04-07 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Entrainment pump for viscous fluids, particularly suitable for lubricating dobbies and looms
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FR2868090A1 (en) 2004-03-29 2005-09-30 Staubli Faverges Sca DEVICE FOR LEVELING, MECHANICAL ARMOR WITH CAME INCORPORATING SUCH A DEVICE AND WEAVING FABRIC OF SUCH A MECHANICAL
EP1728903A1 (en) * 2005-05-31 2006-12-06 F.I.R.S.T. S.p.A. Improved lubrication device for bearings of leverages actuating heald frames in weaving looms
FR2984991A1 (en) * 2011-12-21 2013-06-28 Toyota Jidoshokki Kk Automatic feeding attachment for electrical appliance of weaving loom, has oil supply tubes connected to set of rods close to oil feed pumps that are connected to respective socket tubes
FR3010094A1 (en) * 2013-08-28 2015-03-06 Toyota Jidoshokki Kk LUBRICATING APPARATUS FOR CROWN FORMING APPARATUS IN WORKING MACHINE

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EP0140800A1 (en) 1983-09-21 1985-05-08 S.A. DES ETABLISSEMENTS STAUBLI (France) Units of draw levers mounted on dobby or other shed-forming mechanisms on looms
EP0535726A1 (en) * 1991-09-20 1993-04-07 NUOVOPIGNONE INDUSTRIE MECCANICHE E FONDERIA S.p.A. Entrainment pump for viscous fluids, particularly suitable for lubricating dobbies and looms
IT1251843B (en) 1991-09-20 1995-05-26 Nuovopignone Ind Meccaniche Ef DRIVE PUMP FOR VISCOUS FLUIDS, PARTICULARLY SUITABLE FOR THE LUBRICATION OF DABBITS AND TEXTILE FRAMES
CN2665156Y (en) 2003-12-02 2004-12-22 新昌鹤群机械有限责任公司 Lubricating arrangement for dobbies
FR2868090A1 (en) 2004-03-29 2005-09-30 Staubli Faverges Sca DEVICE FOR LEVELING, MECHANICAL ARMOR WITH CAME INCORPORATING SUCH A DEVICE AND WEAVING FABRIC OF SUCH A MECHANICAL
EP1728903A1 (en) * 2005-05-31 2006-12-06 F.I.R.S.T. S.p.A. Improved lubrication device for bearings of leverages actuating heald frames in weaving looms
FR2984991A1 (en) * 2011-12-21 2013-06-28 Toyota Jidoshokki Kk Automatic feeding attachment for electrical appliance of weaving loom, has oil supply tubes connected to set of rods close to oil feed pumps that are connected to respective socket tubes
FR3010094A1 (en) * 2013-08-28 2015-03-06 Toyota Jidoshokki Kk LUBRICATING APPARATUS FOR CROWN FORMING APPARATUS IN WORKING MACHINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3080118A1 (en) * 2018-04-16 2019-10-18 Staubli Faverges ROTARY RATIERE AND WEAVING
EP3556920A1 (en) * 2018-04-16 2019-10-23 Staubli Faverges Rotary dobby and weaving loom
KR20190120721A (en) * 2018-04-16 2019-10-24 스또블리 파베르쥬 Rotary Dobby And Loom

Also Published As

Publication number Publication date
FR3043098A1 (en) 2017-05-05
CN106894150B (en) 2020-03-06
BR102016025227A2 (en) 2017-05-02
TW201723252A (en) 2017-07-01
TWI712711B (en) 2020-12-11
BR102016025227B1 (en) 2022-06-07
PT3162935T (en) 2018-11-12
EP3162935B1 (en) 2018-07-25
CN106894150A (en) 2017-06-27
FR3043098B1 (en) 2017-12-22

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