EP4095296B1 - Fachbildungsmaschine - Google Patents

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Publication number
EP4095296B1
EP4095296B1 EP22175316.3A EP22175316A EP4095296B1 EP 4095296 B1 EP4095296 B1 EP 4095296B1 EP 22175316 A EP22175316 A EP 22175316A EP 4095296 B1 EP4095296 B1 EP 4095296B1
Authority
EP
European Patent Office
Prior art keywords
sealing
forming machine
common shaft
shed forming
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22175316.3A
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English (en)
French (fr)
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EP4095296A1 (de
Inventor
David Bonneau
Sylvain LEGER
François POLLET
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
Original Assignee
Staubli Faverges SCA
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Publication of EP4095296A1 publication Critical patent/EP4095296A1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/16—Arrangements of dobby in relation to loom
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D03C5/06—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices operated by cam devices other than rotating cams
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/146—Independent drive motor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/26—Travelling-wave-shed looms
    • D03D47/262—Shedding, weft insertion or beat-up mechanisms
    • D03D47/267—Shedding mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/44—Automatic stop motions acting on defective operation of loom mechanisms
    • D03D51/46—Automatic stop motions acting on defective operation of loom mechanisms of shedding mechanisms

Definitions

  • the present invention relates to a shed forming machine, of mechanical cam or dobby type, for a loom.
  • a shedding machine can be formed by a cam mechanism which comprises several cams rotated by a main shaft and each defining two conjugate tracks on which two rollers supported by a lever, most often called a lever, respectively bear. Release.
  • Each output lever includes a lever arm to which one of the connecting rods of the pulling mechanism is coupled.
  • the output levers are provided in a number equivalent to the number of heddle frames of the loom and mounted to have an alternating oscillation movement around a common shaft defined by the mechanical frame.
  • a shedding machine can also be constituted by a rotating dobby which comprises internal connecting rods belonging to oscillating connecting rod-lever assemblies controlled by eccentric-shaped actuating elements. These actuating elements are mounted on a main shaft of the dobby driven by an intermittent rotational movement.
  • a selection device allows, at the level of each of the dobby blades, and depending on the weave to be obtained on the fabric being weaved, to secure or not the actuating element with the main shaft, which allows you to train or not the pulling mechanism.
  • the part of each actuating element which is connected to the draw constitutes an exit lever for the dobby.
  • a shed forming machine can be equipped with a variable number of output levers, depending on the number of frames of the loom with which it is associated. Under these conditions, a sealing device intended to close an outlet opening of the shedding machine must be compatible with different distributions of outlet levers.
  • the invention more particularly intends to remedy by proposing a new shed forming machine in which the sealing at the level of the outlet opening crossed by the oscillating outlet levers is improved, by means of an economical and reliable approach.
  • the different grooves of the sealing spacers make it possible to mount the seal as close as possible to the fixed part of the machine, whether it is the frame or the cover.
  • the joint can have a relatively simple shape and its assembly is easy, which is advantageous in economic terms and in terms of speed of manufacture.
  • the structure envisaged for the sealing spacers and the seal gives the shed forming machine of the invention good compactness and facilitates maintenance operations.
  • the cam mechanism 2 shown on the figures 1 to 10 is intended to drive connecting rods and levers of a drawing mechanism not shown, this drawing mechanism itself driving the frames of a loom, according to a technique known per se.
  • the cam mechanism 2 constitutes a crowd forming machine.
  • the cam mechanism 2 comprises a frame 4 and a cover 6 attached to the frame.
  • the frame 4 and the cover 6 are fixed parts of the cam mechanism 2 and define between them an internal volume V2 of the cam mechanism 2, in which are received a certain number of mechanical members lubricated by an oil bath not shown.
  • a control shaft 8 is driven in rotation, around its longitudinal axis A8, by a motor not shown.
  • This control shaft 8 itself drives, through an angle gear not shown, a camshaft 10 equipped with cams 12 and supported by the frame 4.
  • A10 the longitudinal axis of the camshaft, around which this shaft rotates when the cam mechanism operates.
  • the number of cams 12 is equal to eight.
  • the cams 12 determine the armor produced by the heddle frames driven by the cam mechanism 2.
  • a set of four output levers 14 is mounted in the volume V2 and partially protrudes from this volume through an outlet opening 16 provided in the cover 6. More precisely, each outlet lever 14 defines a central bore 142 and two tabs 144 on which rollers 18 are mounted held in position by flanges 20. Each output lever 14 also comprises a lever arm 146 which extends generally in a radial direction to a central axis of the bore 142. In the mounted configuration of the cam mechanism 2, the parts 142 and 144 of an output lever 14 as well as the rollers 18 and the flanges 20 which are associated with it are arranged in the volume V2, while its lever arm 146 passes through the opening 16 .
  • Axes A10 and A22 are parallel.
  • the cam mechanism 2 is equipped with four levers 14 and the volume left free by these four levers, along the common shaft 22 which can receive up to eight levers, is occupied by rings catch-up 24 of which there are four.
  • a ball bearing commonly referred to as a "thrust ball” which allows differentiated oscillation movements of the levers 14 around the oscillation.
  • axis A22 depending on the profile of the cams 12 with which they are associated by the rollers 18.
  • Ball bearings 26 are also arranged on either side of the stack of levers 14. Thus, in the example of the figures where four levers 14 are mounted on the shaft 22, five ball bearings 26 are used. Generally speaking, the number of thrust ball bearings 26 is equal to the number of levers 14 plus one.
  • Two side rings 28 are mounted on the shaft 22, on either side of the subassembly formed by parts 14, 24 and 26.
  • Two circlips 30 are arranged on either side of the side rings 28 and engaged in peripheral grooves 32 of the common shaft 22, which makes it possible to maintain axially the stack formed of the parts 14, 26, 24 and 28 along of the shaft 22.
  • An elastic washer 34 is inserted axially between one of the side rings 28 and the nearest circlip 30, which allows the axial play of the parts mounted around the common shaft 22 to be taken up.
  • the opening 16 is delimited by a first edge 62 of the cover 6 which is parallel to the axis A22, as well as by two edges, only one of which is visible to the figures 1 And 2 , with the reference 64, and which are parallel to each other and perpendicular to axis A22.
  • the opening 16 is also defined by an edge 41 of the frame 4 which is turned towards the cover 6 in the mounted configuration of the cam mechanism 2.
  • the cam mechanism 2 comprises a stack E40 of sealing spacers 40 which are of two types, namely intermediate sealing spacers 40A and end sealing spacers 40B.
  • insert A corresponds to a cut at the level of an intermediate spacer 40A
  • insert B corresponds to a cut at the level of an end spacer 40B.
  • the sealing spacers 40 are made by molding plastic material, for example polyamide.
  • the 40A intermediate sealing spacers are identical to each other.
  • the end sealing spacers 40B are identical to each other.
  • the number of intermediate spacers 40A is equal to the number of levers 14.
  • the number of end spacers 40B is equal to 2 plus the difference between the maximum number of levers that it is possible to mount in the cam mechanism, here 8, and the number of levers installed in the cam mechanism.
  • a 40A intermediate sealing spacer is shown alone in the Figure 9 , in top view at insert A and in two elevation views corresponding to its two opposite sides, to inserts B and C.
  • the intermediate sealing spacer 40A comprises a strip 402 which extends on an external side of the spacer visible at the insert C of the Figure 9 and oriented upwards in the mounted configuration of the spacer in the machine 2, between a first end 404, which is arranged near the edge 41 of the frame 4 in the mounted configuration of the spacer, and a second end 406, which is arranged, in the same mounted configuration, near the cover 6.
  • This strip 402 comprises two longitudinal edges 408 and 410 which are orthogonal to the axis A22 in the mounted configuration of the spacer and which are configured to be supported against at least one longitudinal edge 410 or 408 of the strip 402 of an adjacent sealing spacer 40.
  • the intermediate sealing spacer 40A On the side opposite the strip 402, the intermediate sealing spacer 40A has an internal radial edge 412 in the shape of an arc of a circle centered on an axis A40 which forms a primary axis for this spacer and to which the longitudinal edges 408 and 410 are perpendicular.
  • the internal radial edge 412 extends around the primary axis A40 over an angular sector whose vertex angle ⁇ is strictly less than 180°, for example of the order of 140°.
  • R40 the radius of curvature of the radial edge 412
  • this radius of curvature is chosen equal to the external radius of the ball bearings 26 and of the rings 24 and 28, which is common.
  • the edge 412 thus defines a passage opening for the common shaft 22 centered on the primary axis A40.
  • the internal radial edge 412 extends along an irregular contour distinct from a radius of curvature while defining the passage opening centered on the primary axis A40.
  • the concave volume defined in the edge of an intermediate sealing spacer 40A, on the side of its radial edge 412, is configured to receive a part of the common shaft 22 equipped with elements 24 to 28.
  • the different primary axes A40 of the intermediate sealing spacers 40A coincide with the axis A22.
  • the strip 402 of an intermediate sealing spacer has a first width f402 in the vicinity of its ends 404 and 406 and a second width f'402, strictly less than the width f402, in an intermediate zone corresponding approximately to the angular sector of vertex angle ⁇ .
  • the spacer 40A On its two sides respectively visible at inserts B and C of the Figure 9 , the spacer 40A is provided with stiffening ribs 414.
  • the intermediate sealing spacer 40A is provided with a first groove 416 which extends parallel to its primary axis A40 and opens onto the two sides of this spacer visible at inserts B and C of the Figure 9 .
  • This groove 416 also opens towards the top of the inserts A and B of the Figure 9 and has a dovetail shape, with a profile perpendicular to the axis A40 which has a bottom 418 whose width f418 is greater than the width f420 of its mouth 420 opposite the bottom 418. This profile is constant over the length of the groove 416, between the two opposite sides of the spacer 40A.
  • each spacer 40 is pierced with a through hole 422 which opens on its two opposite sides visible to the inserts B and C of the Figure 9 and which constitutes a housing for receiving a support shaft 42 whose longitudinal axis A42 is parallel to the axes A10 and A22.
  • A422 the longitudinal axis of the orifice 422, which is parallel to the primary axis A40 of the spacer 40 and coincides with the axis A42 in the mounted configuration of the cam machine 2.
  • the through orifice is a cylindrical-shaped receiving housing centered on axis A422.
  • the intermediate sealing spacer 40A also includes a hook 424 provided on the side of this spacer visible at insert B of the Figure 9 and intended to engage in a corresponding housing 426 provided on the opposite side of another spacer 40A or 40B, as visible on the insert C of the figures 9 And 10 .
  • the hook 424 and the housing 426 make it possible to join together two adjacent sealing spacers 40 of the stack E40, that is to say to maintain, in relation to each other, the adjacent spacers stacked along the common tree 22.
  • the end sealing spacer 40B comprises a second hook 425 intended to engage in a corresponding housing 427 provided on the opposite side of another spacer 40A or 40B, as visible on the insert C of the figures 9 And 10 .
  • the hook 425 and the housing 427 also make it possible to join together two adjacent sealing spacers 40 of the stack E40, that is to say to maintain, in relation to each other, the adjacent spacers stacked along the common shaft 22.
  • each end sealing spacer 40B and each intermediate sealing spacer 40A has hooks 424 and 425 on one side of the spacer, and housings 426 and 427 on the opposite side of the spacer.
  • the spacers are stacked on the common shaft 22 when arranged adjacently along the common shaft and made continuous to form the sealing device with a seal 52 or 54.
  • the intermediate sealing spacer 40A also includes a second groove 436 formed near its upper end 406 and which extends parallel to its primary axis A40, opening onto the two sides of this spacer respectively visible at inserts B and C of the Figure 9 .
  • This groove 436 also has a bottom 438 and a mouth 440 which extends over the entire length of the groove 436, between the two sides of the spacer.
  • the profile of the groove 436 is dovetailed, with its bottom 438 which has a width f438 greater than the width f440 of the mouth 440.
  • the through hole 422 is provided in the nose 442.
  • the nose 402 On its side visible to the insert B of the Figure 9 , the nose 402 is bordered by a rib 444 intended to engage under the strip 402 of another adjacent sealing spacer, when they are stacked along the common shaft 22 within the stack E40, so as to create a partial overlap between these two spacers, which improves the sealing effect obtained at the level of the noses 442.
  • the end 404 is provided with a rib 446 projecting relative to the side of the sealing spacer visible at insert B and intended to engage inside one end 404 of an adjacent spacer, which improves the sealing obtained at the level of the ends 404.
  • the end seal spacer 40B shown at inserts A, B and C of the Figure 10 has a structure comparable to that of the spacer 40A shown in Figure 9 .
  • this end sealing spacer 40B defines a strip 402 which extends between a first end 404, which is arranged near the edge 41 of the frame 4 in the mounted configuration of the spacer, and a second end 406 , which is arranged, in the same mounted configuration, near the cover 6.
  • the longitudinal edges 408 and 410 of the strip 402 are also perpendicular to a primary axis A40 of this spacer and configured to bear against at least one longitudinal edge 410 or 408 of the strip 402 of an adjacent sealing spacer 40.
  • the strip 402 has a width f402, measured parallel to its primary axis A40 and between its edges 108 and 410, which is constant, with the same value as the maximum value for the spacer interlayer sealing 40A.
  • the radial internal edge 412 is circular, that is to say it extends over 360° around the primary axis A40, and has a radius R40 equal to the radius of curvature of the edge 412 of a spacer d 40A interlayer sealing.
  • the internal radial edge 412 extends along an irregular contour distinct from a radius of curvature while defining the passage opening centered on the primary axis A40.
  • the disc-shaped volume defined in the edge of an end sealing spacer 40B and which is bordered by the edge 412 is configured to receive a portion of the common shaft 22.
  • the edge 412 defines an opening passage of the common shaft 22.
  • the end sealing spacer 40B also includes hooks 424 and 425 and corresponding housings 426 and 427, similar to those of an intermediate sealing spacer 40A. This allows continuity of the sealing spacers 40, whatever their type, 40A or 40B.
  • the end sealing spacer 40B also includes stiffening ribs 414 provided on its two sides visible at the inserts B and C of the Figure 10 , a hook 424, a housing 426 and two grooves 416 and 436 respectively having geometries identical to those of the grooves 416 and 436 of the intermediate sealing spacer 40A.
  • grooves 416 and 436 of the sealing spacers 40 of the stack E40 have the same profile in section perpendicular to their primary axis A40, whether they are grooves 416 and 436 belonging to an intermediate sealing spacer or grooves 416 and 436 belonging to an end sealing spacer.
  • the end sealing spacer 40B also includes a through hole 422 formed in its nose 442, as well as ribs 444 and 446 respectively identical to the ribs 444 and 446 of the intermediate end spacer 40A.
  • the through hole 422 is a receiving housing of cylindrical shape centered on the axis A422.
  • Each end spacer 40B is formed of a first portion 401 and a second portion 403.
  • the first portion 401 of an end spacer 40B has, in front view shown at inserts B and C of the Figure 10 , a geometry similar to that of a 40A spacer.
  • the width of the ribs 414, measured parallel to the primary axis A40 in this portion 401, is equal to the width f402 of the strip 402.
  • the portion 403 makes it possible to close, around the primary axis A40, the part of the edge 412 formed in portion 401.
  • the ribs 414 have a width f403, also measured parallel to the primary axis A40, which is strictly less than the width f402 of the strip 402.
  • the end seal spacers 40B As the end seal spacers 40B completely surround the adjustment rings 24 and the side rings 28, the end seal spacers are centered on the axis A22. More precisely, the edge 412 of the end sealing spacers 40B comprises radial extra thicknesses which constitute a means of centering these spacers around the axis A22, since the external peripheral surfaces of the rings 24 and 28 are centered on the axis A22.
  • the cam mechanism 2 also comprises a first elastomer seal 52 and a second elastomer seal 54 which each extend along a longitudinal axis A52, A54, these axes being parallel to the axes A10 and A22 in the mounted configuration of the cam mechanism.
  • the joints 52 and 54 are preferably extruded, in other words produced by an extrusion process, which is particularly simple and economically advantageous.
  • the joint 52 is produced by an elastomer profile which has a section, perpendicular to the axis A52, which is constant, over the length L52 of the joint 52.
  • the joint 52 comprises a heel 522 and a lip 524.
  • the heel 522 is configured to be engaged and retained inside a reception channel G2 formed by the juxtaposition of the grooves 416 of the different spacers 40 of the stack E40.
  • the section of the reception channel G2 is constant over the length of the stack E40 which is measured parallel to the axes A40 and A22 which are combined in the mounted configuration of the sealing spacers 40 in machine 2.
  • the shape of the heel 522 is complementary to that of the reception channel G2. Taking into account the dovetail shape of the transverse profile of the grooves 316, therefore of the reception channel G2 and the heel 522, the joint 52 is firmly retained in position on the stack E40 when its heel 522 is in place in the reception channel G2.
  • the grooves 416 of the spacers of the sealing device stacked along the common shaft 22 define the receiving channel G2 of the heel 522 of the seal 52.
  • the receiving channel G2 is adapted to partially accommodate the seal d seal 52.
  • the receiving channel G2 is adapted to position and maintain the seal 52 in the main direction A52 parallel to the longitudinal axis A22.
  • the lip 524 comes to rest against the edge 41 of the frame 4, which prevents oil projections from escaping from the internal volume V2, at the interface between the first ends 404 of the sealing spacers 40 and frame 4, in the vicinity of edge 41.
  • the joint 54 is made by an elastomer profile which has a constant section over the length L54 and which has a heel 542 and a lip 544.
  • the juxtaposition of the grooves 436 of the different spacers 40 within the stack E40 constitutes a second channel G4 for receiving the heel 542, which has a constant section over its length of the stack E40.
  • the shape of the heel 542 is complementary to that of the reception channel G4. Taking into account the dovetail shape of the transverse profile of the grooves 346, therefore of the reception channel G4 and the heel 542, the joint 54 is also firmly retained in position on the stack E40 when its heel 542 is in place in the G4 reception channel.
  • the lip 544 prevents oil projections from leaving the volume V2 towards the outside of the cam mechanism 2, at the interface between the second ends 406 of the sealing spacers 40 and the cover 6 , in the vicinity of edge 62.
  • the sealing device consisting of the stack E40 and the seals 52 and 54 effectively closes the outlet opening 16, around the lever arms 146 of the outlet levers 14.
  • the length L52 is equal to the length of the edge 41 measured parallel to the axis A22, while the length L54 is greater than or equal to the length of the edge 62, also measured parallel to the axis A22.
  • the length L52 or L54 of a seal is greater than or equal to the width l16 of the outlet opening 16, which is measured parallel to the longitudinal axis A22 of the common shaft 22.
  • the division d can, by example, be measured as the distance which separates two faces of two adjacent levers 14, these faces being oriented in the same direction.
  • the width t 402 of the strip 402 of an intermediate sealing spacer 40A in its intermediate part is equal to the difference between the division d and the thickness e14.
  • the intermediate zones of the intermediate spacers 40A make it possible to fill the space between two adjacent levers 14, by covering a ball bearing 26 disposed between these levers, which limits the projections of oil through the opening 16, between the levers 14.
  • intermediate sealing spacers 40A are each mounted on the periphery of an axial stop 26.
  • the width l402 is equal to the division d, so that, in the zones of the opening 16 devoid of levers 14, the strips 402 of the sealing spacers 40 which are supported against each other by their longitudinal edges 408 and 410 constitute a continuous surface which opposes the projections of oil towards the outside of the volume V2, through the outlet opening 16.
  • the ribs 444 and 446 reinforce the seal between two adjacent spacers 40, whether spacers 40A or spacers 40B, while the hooks 424 and the corresponding housings 426, and possibly the hooks 425 and the corresponding housings 427, ensure a precise relative positioning between the spacers 40, within the stack E40.
  • D4 the stacking distance of the four support rings 24, which each have a width e24 equal to the division d.
  • These support rings 24 provide a catch-up function between the circlips 30, in the absence of four levers 14.
  • the lateral rings 28 and the catch-up rings 24 have the same geometry, in particular the same axial thickness.
  • L68 the length, measured parallel to the axis A22, of a stack formed of a lateral ring 28 and an axial stop 26.
  • L14 the length, also measured parallel to the axis X22, of a stack formed of four levers 14 and four associated ball bearings 26.
  • the axial distance between the elastic washer 34 bearing against a circlip 30 and the opposite circlip 30 is equal to the sum of the quantities e24, d4, L14 and L68.
  • the cam mechanism 2 also comprises an arch 70 formed of a longitudinal body 72 parallel to the axis A2 and of two legs 74 perpendicular to the longitudinal body 72 and to the axis A22 and which each define a bearing not shown for the support shaft 42.
  • the arch 70 is immobilized on the frame 4 by means of four screws 76, two of which are inserted in each of the tabs 74.
  • the longitudinal body 72 is pierced with two threads 71 for receiving two screws 61 for immobilizing the cover 6 on the frame 4.
  • the screws 61 are omitted at the figure 1 and reveal the corresponding passage orifices 63, provided in the cover 6 for their passage.
  • a tool 80 is used to move the common shaft 22 and the elements attached to this shaft, with respect to the frame 4 and around the axis A42, after removal of the cover 6, between a weaving position and a position leveling.
  • Leveling consists of passing the levers 14 of the so-called weaving configuration of the figures 2 to 4 , where the rollers 18 are supported on the cams 12, in the so-called leveling configuration of the figure 5 , where the rollers 18 are distant from the cams 12.
  • the sealing spacers 40 pivot around the axis A42, with the other elements carried by the common shaft 22, during this passage between these two positions.
  • the levers 14 are decoupled from the drive means constituted by the cams 12, so that the camshaft 10 and the cams 12 can be removed from the frame 4 to be adapted or changed, at the choice of the weaver and depending on the armor to be made.
  • the cam mechanism 2 of the invention is compatible with the use of a removable leveling means constituted by a tool 80, which makes it possible to pivot the common shaft 22 around the longitudinal axis A42 of the support shaft 42 and the sealing spacers 40 around the axes A422 of their through holes 422.
  • the tool 80 comprises two uprights 82 and a handle 84 which connects the uprights and which is intended to be maneuvered by an operator to tilt the tool around the axis A42.
  • the tool 80 is shown partially and in axis lines at the figures 3 And 5 .
  • the tilting of the tool 80, in the direction of arrow F1 at the figure 2 has the effect of moving it from the configuration shown to the figure 2 to that represented in Figure 5 , which has the effect of driving the common shaft 22 and the elements mounted on this shaft of the weaving configuration of the Figure 3 to the leveling configuration of the Figure 5 .
  • the tilting of the common shaft 22 of the configuration of the Figure 3 to the configuration of the Figure 5 has the effect, taking into account the centering obtained thanks to the edge 412 of the end sealing spacers 40B, of also driving these spacers in the same movement.
  • the entire stack E40 follows the leveling movement imparted to the common shaft 22 by the tool 80. This movement continues until the edge of the levers 14 comes to bear against an internal rib 44 of the frame 4 close to the edge 41, as shown in Figure 5 .
  • the levers 14 are returned to the weaving configuration by moving the common shaft from the configuration of the Figure 5 to that of the Figure 3 . This is done by tilting the tool around axis A42, in the opposite direction of arrow F1. As the stack E40 is integral with the common shaft 22 for the reasons explained above, this movement has the effect of automatically returning the joints 52 and 54 to the operational configuration, the joint 52 then being supported against the edge 41 and the seal 54 being ready to receive in support the internal surface 66 of the cover 6.
  • the invention is therefore particularly suitable for cam mechanics which must be manipulated from a weaving configuration to a leveling configuration and vice versa.
  • One of the screws 76 is surrounded by a washer 78, the outer edge of which is housed in a groove not shown in the common shaft 22 in weaving configuration. This makes it possible to position the common shaft 22 axially in relation to the plates of the frame 4 on which it must be attached before immobilizing it with assembly screws 23 arranged on either side of the parts 14 to 30, 34 and 40, along axis X22. This guarantees a precise positioning of the common shaft 22 on the frame 4, therefore precise contact between the tracks of the cams 12 of the shaft 10 and the rollers 18 of the output levers 14.
  • the E40 stack shown in Figure 11 corresponds to a second embodiment of the shed forming machine of the invention where eight output levers 14 not shown are mounted around the common shaft 22.
  • the elements identical to those of the first embodiment bear the same references.
  • the stack E40 comprises six intermediate sealing spacers 40A and two end sealing spacers 40B, arranged, along the axis A40, on either side of the spacers. 40A interlayer sealing.
  • the grooves 316 and 346 of the different sealing spacers 40 together define two reception channels G2 and G4 for receiving the heels 522 and 542 of two seals 52 and 54 which are identical to those shown in the previous figures and whose longitudinal axes are parallel to axis A40, therefore to the longitudinal axis of the common shaft of the shed forming machine.
  • the number and distribution of the output levers 14 may be different from those mentioned above.
  • the stack E40 is adapted accordingly, this stack E40 being made up of intermediate sealing spacers 40A and end 40B identical to those shown in the figures.
  • the stack E40 always includes two end sealing spacers 40B, at its ends.
  • the geometry of the sealing spacers 40 makes it possible to form a sub-assembly with the intermediate sealing spacers 40A by pre-assembling them together by means of their hooks and housings 424 and 426, before bringing them back on the common shaft 22 in a direction radial to this shaft, by bringing the edges 412 of these spacers closer to the axis A22 and by inserting the lever arms 146 into the spaces left free between two intermediate sealing spacers 40A in the intermediate zone where their strips 402 have a minimum width f'402.
  • This subassembly can then be secured with end spacers 40B threaded around the common shaft 22.
  • the invention is shown in the figures in the case where the sealing spacers 40 support two seals 52 and 54. It is however applicable when these spacers support a single seal, resting against a fixed part which delimits the internal volume V2 of the machine 2.
  • the fixed part(s) against which the seal(s) comes or bear may be the frame 4, the cover 6 or another part.
  • the edge 412 of an end sealing spacer 40B extends over an angular sector whose apex angle is less than 360°, while being strictly greater than 180°, preferably greater than 270°.
  • this edge 412 constitutes in all cases a means of centering the end spacer 40B around the rings 24 or 28, therefore around the axis A22.
  • the shape of the heels 522 and 542 of the joints 52 and 54 and the section of the reception channels G2 and G4 may be different from those shown in the figures.
  • the seals 52 and 24 can be made of polymer material or composite.
  • the means of connection between the sealing spacers 40 can be modified, in particular with regard to the number and shape of the hooks 424 and/or 425 and the housings 426 and/or 427.
  • a spacer 40 may not include only one hook 424 or 425 and one housing 426 or 427, or even no such hook or housing.
  • the sealing spacers 40 do not include a hook 424 nor a housing 426 but are kept stacked along the common shaft 22 by means of a sealing gasket 52 or 54 which limits the movement of the spacers between they along the common shaft 22
  • the intermediate sealing spacers 40A can be configured to receive, on their sides visible to the inserts B and C of the Figure 9 , a complementary sealing member formed by a seal which bears, in a sealed manner, on one face of an adjacent output lever, this face being perpendicular to the axis A22.
  • This additional seal is partially housed in the intermediate sealing spacer, at its intermediate zone.
  • the tool 80 can be replaced by an electric motor.
  • the cam machine 2 is compatible with a motorized leveling drive, which allows to tilt, reversibly, the sealing device formed by parts 40, 52 and 54 with the common shaft 22 and around the axis A42, during the transition from the leveling configuration to the weaving configuration. Indeed, when leveling the heddle frames of the loom, for example when it comes to releasing the tension of the layers of warp threads, it is not necessarily necessary to access the volume V2.
  • the sealing device formed by parts 40, 52 and 54 can pivot around axis A42, which allows, in the leveling configuration, to separate the lips 524 and 544 of the portions 41 and 66 fixed parts 4 and 6, against which they respectively rest in the weaving configuration, while the cover 6 remains in place on the frame 4.
  • each output lever is driven in its oscillating movement by an internal connecting rod of the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Claims (15)

  1. Fachbildungsmaschine (2), mechanischer Typ mit Nocken oder Schaftmaschine, für Webstühle,
    diese Maschine umfasst:
    - Ausgangshebel (14), die um eine gemeinsame Welle (22) schwingen, die auf einer Längsachse (A22) zentriert ist;
    - eine Abdeckung (6), die eine Austrittsöffnung (16) definiert, die von den Ausgangshebeln durchquert wird;
    - ein Gestell (4), das zusammen mit der Abdeckung ein Innenvolumen (V2) der Maschine begrenzt; und
    - eine Dichtungsvorrichtung (40, 52, 54) zum Verschließen der Austrittsöffnung der Abdeckung mit Dichtungsstreben (40), die entlang der gemeinsamen Welle gestapelt und auf beiden Seiten der Ausgangshebel angeordnet sind, sowie mindestens eine Dichtung (52, 54),
    jede Dichtungsstrebe umfasst:
    - eine Leiste (402), die sich von einem ersten Ende (404), das sich in der Nähe des Gestells (4) befindet, zu einem zweiten Ende (406) erstreckt, das sich in der Nähe der Abdeckung (6) befindet. Sie umfasst zwei Längsränder (408, 410), die orthogonal zur Längsachse (A22) der gemeinsamen Welle (22) verlaufen und so konfiguriert sind, dass sie an mindestens einem der Längsränder der Leiste einer benachbarten Dichtungsstrebe anliegen und einen inneren radialen Rand (412), der eine Durchgangsöffnung der gemeinsamen Welle (22) definiert, die auf einer primären Achse (A40) zentriert ist, die mit der Längsachse der gemeinsamen Welle zusammenfällt, zumindest wenn sich die Maschine in der Webkonfiguration befindet, dadurch gekennzeichnet, dass
    - die Dichtung (52, 54) sich in einer Hauptrichtung (A52, A54) parallel zur Längsachse (A22) der gemeinsamen Welle (22) erstreckt und an einem festen Teil (4, 6) der Maschine anliegt;
    - jede Dichtungsstrebe (40) mit mindestens einer Nut (416, 436) versehen ist, die sich parallel zu ihrer primären Achse (A40) erstreckt und auf jeder Seite der Dichtungsstrebe mündet;
    - die Nuten der Dichtungsstreben der Dichtungsvorrichtung (40, 52, 54) zusammen einen Kanal (G2, G4) zur Aufnahme eines Wulstes (522, 542) der Dichtung definieren.
  2. Fachbildungsmaschine nach Anspruch 1, dadurch gekennzeichnet, dass in einer Ebene senkrecht zur Primärachse (A40) die Nut (416, 436) jeder Dichtungsstrebe (40) durch ein Profil mit einem Boden (418, 438) definiert ist, dessen Breite (1418, 1438) größer ist als die Breite (I420, I440) seiner Mündung (420, 440).
  3. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nuten (416, 436) der Dichtungsstreben (40) der Dichtungsvorrichtung (40, 52, 54) in einer Ebene senkrecht zu ihrer primären Achse (A40) das gleiche Profil haben.
  4. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dichtung (52, 54) einen Querschnitt senkrecht zu ihrer Hauptrichtung (A52, A54) aufweist, der entlang dieser Hauptrichtung konstant ist, und dass die Länge (L52, L54) der Dichtung, gemessen parallel zu ihrer Hauptrichtung, größer oder gleich einer Breite (116) der Auslassöffnung (16) ist, gemessen parallel zur Längsachse (A22) der gemeinsamen Welle (22).
  5. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine der Dichtungsstreben (40) eine Zwischenschicht-Dichtungsstrebe (40A) ist, dass eine Breite der Leiste dieser Strebe, gemessen parallel zur Primärachse zwischen ihren beiden Längsrändern, an ihrem ersten und zweiten Ende (404, 406) einen ersten Wert (I402) und einen zweiten Wert (I'402) in einem Zwischenbereich zwischen ihrem ersten und zweiten Ende präsentiert, das einen Winkelsektor der Auslenkung eines Ausgangshebels (14) abdeckt, dadurch, dass der erste Wert gleich ist mit der Teilung (d) der Fachbildungsmaschine und dass der zweite Wert gleich der Teilung der Fachbildungsmaschine abzüglich der Dicke (e14) eines Ausgangshebels, gemessen parallel zur Längsachse (A22) der gemeinsamen Welle, ist.
  6. Fachbildungsmaschine nach Anspruch 5, dadurch gekennzeichnet, dass sich der innere radiale Rand (412) um die Primärachse (A40) über einen Winkelsektor erstreckt, dessen Scheitelwinkel (α) strikt kleiner als 180° ist.
  7. Fachbildungsmaschine nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass die Dichtungsvorrichtung (40, 52, 54) mindestens ein komplementäres, in der Austrittsöffnung (16) montiertes Dichtungselement umfasst, das teilweise in der zwischenliegenden Dichtungsstrebe (40A) im Zwischenbereich angeordnet ist und mit einer Fläche eines benachbarten Ausgangshebels (14) abdichtend zusammenwirkt, wobei diese Fläche senkrecht zur Längsachse (A22) der gemeinsamen Welle (22) verläuft.
  8. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine der Dichtungsstreben eine Endabdichtungsstrebe (40B) ist, dass eine Breite der Leiste dieser Strebe, gemessen parallel zu der Primärachse zwischen ihren beiden Längsrändern (408, 410) einen konstanten Wert (I402) aufweist, der gleich der Teilung (d) der Fachbildungsmaschine (2) von ihrem ersten Ende (404) zu ihrem zweiten Ende (406) ist, und dass die Dichtungsstrebe Mittel zum Zentrieren (412) in Bezug auf die gemeinsame Welle (A22) umfasst.
  9. Fachbildungsmaschine nach einem der Ansprüche 5 bis 7 und nach Anspruch 8, dadurch gekennzeichnet, dass sie umfasst:
    - Axialanschläge (26), die um die gemeinsame Welle (22) auf beiden Seiten jedes Ausgangshebels (14) angeordnet sind;
    - Axialsicherungselemente (30), die an jedem Ende der gemeinsamen Welle angebracht und so konfiguriert sind, dass sie die Axialanschläge und die Ausgangshebel (14) auf der gemeinsamen Welle halten;
    - mindestens zwei Stützringe (24, 28), die jeweils zwischen einem Axialanschlag und einem axialen Befestigungselement eingefügt sind;
    - dass Enddichtungsstreben (40B) um die Stützringe (24, 28) herum durch die Zentriermittel (412) angebracht sind; und
    - dass zwischenliegende Dichtungsstreben (40A) jeweils am Umfang eines Axialanschlags (26) angebracht sind und jeweils ein Durchgangsvolumen eines Ausgangshebels (14) nach außen durch die Auslassöffnung (16) am Zwischenbereich ihrer Leiste begrenzen.
  10. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Dichtungsstrebe (40) eine Aufnahme (422) umfasst, die sie entlang einer Achse (A422) parallel zur Primärachse (A40) durchquert, die an zwei gegenüberliegenden Seiten der Dichtungsstrebe mündet und die so konfiguriert ist, dass sie eine Stützwelle (42) aufnimmt, und dass die Maschine vorzugsweise einen Bügel (70) umfasst, der aus einem Längskörper (72) parallel zur Längsachse (A22) der gemeinsamen Welle (22) und zwei Laschen (74) gebildet ist, die senkrecht zum Längskörper stehen und jeweils ein Gelenklager der Stützwelle (42) definieren.
  11. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Fachbildungsmaschine (2) vom Typ Schaftmaschine ist und dass jeder Ausgangshebel (14) durch eine innere Pleuelstange der Maschine in eine oszillierende Bewegung versetzt wird.
  12. Fachbildungsmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Fachbildungsmaschine (2) vom Typ mechanische Nockenmaschine ist und eine Nockenwelle (10) parallel zur gemeinsamen Welle (22) umfasst, deren Drehung die Ausgangshebel (14) in eine oszillierende Bewegung versetzt, und dass jede Strebe (40) so konfiguriert ist, dass sie zwischen einer Webposition, in der die Ausgangshebel mit der Nockenwelle gekoppelt sind, und einer Nivellierposition, in der die Ausgangshebel von der Nockenwelle entkoppelt sind, schwenkt.
  13. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dichtungsstreben (40) Verbindungselemente (424-427) umfassen, die dazu geeignet sind, benachbarte Streben entlang der gemeinsamen Welle (22) gestapelt zu halten.
  14. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Dichtungsstreben (40) Wände (444, 446) umfassen, die zwischen zwei benachbarten Dichtungsstreben überlappen, wenn sie entlang der gemeinsamen Welle (22) gestapelt sind.
  15. Fachbildungsmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein unterer Aufnahmekanal (G2) der Dichtungsvorrichtung (40, 52, 54) eine erste Dichtung (52) aufnimmt, die an einem Teil (41) des Gestells (4) anliegt, der in der Webkonfiguration der Fachbildungsmaschine (2) der Abdeckung (6) zugewandt ist und ein oberer Aufnahmekanal (G4) der Dichtungsvorrichtung (40, 52, 54) eine zweite Dichtung (54) aufnimmt, die an einem Teil (66) der Abdeckung anliegt, der in der Webkonfiguration der Fachbildungsmaschine dem Gestell zugewandt ist.
EP22175316.3A 2021-05-27 2022-05-25 Fachbildungsmaschine Active EP4095296B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2105527A FR3123366B1 (fr) 2021-05-27 2021-05-27 Machine de formation de la foule

Publications (2)

Publication Number Publication Date
EP4095296A1 EP4095296A1 (de) 2022-11-30
EP4095296B1 true EP4095296B1 (de) 2024-03-13

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EP (1) EP4095296B1 (de)
KR (1) KR20220160498A (de)
CN (1) CN115404583A (de)
FR (1) FR3123366B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972008B1 (fr) * 2011-02-25 2013-03-29 Staubli Sa Ets Entretoise et sous-ensemble de separation des leviers d'une machine de formation de la foule, machine comprenant un tel sous-ensemble et procede de montage
FR3043096B1 (fr) 2015-10-29 2018-05-04 Staubli Faverges Machine de formation de la foule

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FR3123366A1 (fr) 2022-12-02
EP4095296A1 (de) 2022-11-30
CN115404583A (zh) 2022-11-29
KR20220160498A (ko) 2022-12-06
FR3123366B1 (fr) 2023-06-02

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