EP3719187B1 - Fachbildungsvorrichtung und webmaschine vom typ jacquard, die mit dieser vorrichtung ausgerüstet ist - Google Patents

Fachbildungsvorrichtung und webmaschine vom typ jacquard, die mit dieser vorrichtung ausgerüstet ist Download PDF

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Publication number
EP3719187B1
EP3719187B1 EP20166942.1A EP20166942A EP3719187B1 EP 3719187 B1 EP3719187 B1 EP 3719187B1 EP 20166942 A EP20166942 A EP 20166942A EP 3719187 B1 EP3719187 B1 EP 3719187B1
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EP
European Patent Office
Prior art keywords
oscillating
oscillating shaft
forming device
casing
shed forming
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Active
Application number
EP20166942.1A
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English (en)
French (fr)
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EP3719187A1 (de
Inventor
Patrice Przytarski
Baptiste BUCHET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staeubli Lyon SA
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Staeubli Lyon SA
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Publication of EP3719187A1 publication Critical patent/EP3719187A1/de
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Publication of EP3719187B1 publication Critical patent/EP3719187B1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms
    • D03C3/36—Griffe operating mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/26—General arrangements of jacquards, or disposition in relation to loom

Definitions

  • the present invention relates to a shed-forming device for a Jacquard-type loom.
  • CN-U-201915195 discloses such a Jacquard mechanism which comprises two oscillating axes arranged one above the other and articulated in two plates, between which extend two series of knives or blades as well as the two axes.
  • the two axes are equipped with tilting levers on each of which is articulated a connecting rod which supports a drive bar for a series of blades, such a bar sometimes being referred to as an “oblique bar”.
  • An input shaft drives the two oscillating axes by means of two eccentrics which each actuate a control rod connected to a crank fixed to one of the oscillating axes.
  • Such kinematics has the advantage of simplicity. However, it lacks rigidity to be able to ensure correct operation at the high speeds required in modern weaving workshops, in particular greater than 1000 picks/minute. Indeed, the oscillating axes which are each connected to a crank are subjected to high torques which induce deformations likely to slow down, or even block, the operation of the Jacquard mechanism.
  • CN105483895 shows another shedding device for a Jacquard-type loom, having overlapping oscillating shafts. However, said device lacks control rods, as described in CN-U-201915195 .
  • the invention more particularly intends to remedy by proposing a new device for forming the shed for a loom of the Jacquard type which has a simple structure and which can operate reliably at high speeds.
  • the two eccentrics, the two control rods and the two cranks are contained in a casing which supports at least one additional hinge bearing of the first oscillating shaft.
  • the first oscillating shaft which has the greatest length beyond the first plate with respect to the volume defined between the two plates, because it is connected to the first connecting rod which is the most remote from this first plate, does not extend cantilevered but between the bearings supported respectively by the first plate and by the casing. This limits the risks of deformation of this first oscillating shaft during operation of the Jacquard mechanism and allows it to work reliably at high speeds.
  • the invention relates to a loom of the Jacquard type which comprises, among other things, a device for forming the shed as mentioned above.
  • Such a loom can operate reliably at high speed without being limited by the shedding device.
  • the loom M represented very schematically in figure 1 is of the Jacquard loom type and comprises a shedding device, 2, also called “Jacquard mechanics", intended to move alternately, with a vertical movement represented by the double arrow F1 at the figure 1 , heddles 4 provided with eyelets 42 for passing warp threads 6.
  • the various healds are supported by the cords of a Jacquard harness 8 whose upper ends are connected to the collars of selection devices provided with hooks 10 resting on two series of knives 12 and 14 animated by an alternating vertical movement in opposition to phase represented by the double arrow F2 at the figure 1 .
  • the two series of knives 12 and 14 are nested one inside the other, in the sense that, except at the level of the longitudinal edges of the device for forming the shed 2, a knife 12 is arranged between two knives 14 and vice versa.
  • the shedding device 2 comprises a frame 16 which includes two longitudinal crosspieces 18 and 20 extending parallel to a longitudinal axis X2 of the shedding device 2.
  • the longitudinal crosspiece 20 is omitted. to the figure 1
  • the longitudinal crosspiece 18 is omitted at the figure 2 .
  • the two series of knives 12 and 14 extend between the longitudinal crosspieces 18 and 20, parallel to the axis X2.
  • the chassis 16 also comprises a first chassis plate 22 and a second chassis plate 24 arranged between the longitudinal crosspieces 18 and 20 and which each extend perpendicularly to the axis X2.
  • the two series of knives 12 and 14 are arranged along the axis X2, in a volume V2 of the shed forming device 2 located between the plates 22 and 24.
  • Each chassis plate 22 or 24 is produced by molding and machining metal, preferably cast iron, and comprises stiffening ribs, some of which are visible on the figure 1 And 2 with the reference 241 for the plate 24, the stiffening ribs of the plate 22 being hidden from the figure 1 .
  • the plate 22 is omitted at the figure 2 .
  • Each knife 12 or 14 of a series of knives is linearly guided in its vertical movement according to the double arrow F2 and connected, at each of its ends, to a rod 26 suspended from a drive bar, also called “oblique bar” . More precisely, each knife of a series of knives 12 or 14 is suspended by two connecting rods 26 from two drive bars, namely a first drive bar arranged in the vicinity of the plate 22 and a second drive bar arranged in the vicinity of plate 24.
  • the four training bars are visible at the figure 2 and comprise a first drive bar 30 and a second drive bar 32 disposed adjacent the platen 22, as well as a third drive bar 34 and a fourth drive bar 36 disposed adjacent the platen 24
  • the four drive bars 30 to 36 are respectively each articulated on a guide arm 31, 33, 35 or 37, itself articulated on the frame 16, at or near the longitudinal crosspiece 18.
  • Each drive bar is made up of two flanges, like the drive bar 30 of which the flanges are noted 302 and 304.
  • the shedding device 2 also comprises an upper oscillating shaft 40 and a lower oscillating shaft 42 arranged one above the other and which extend parallel to the axis X2.
  • the upper oscillating shaft 40 comprises a tube 402 whose diameter is, in the example, equal to 120 mm.
  • the diameter of the tube 402 is between 80 and 160 mm, preferably between 100 and 140 mm, more preferably around 120 mm, which gives it good torsional rigidity.
  • the tube 402 is fixed to a rocker 404 which also belongs to the shaft 40 and which defines two rocking levers 405 and 406.
  • the lower oscillating shaft 42 includes a central tube 422 and two rockers 424 which each define two rocker levers 425 and 426.
  • the diameter of the tube 422 is the same as that of the tube 402.
  • X40 and X42 the longitudinal axes of the oscillating shafts 40 and 42. These axes are parallel to the longitudinal axis X2.
  • Latches 404 and 424 are respectively secured to tubes 402 and 422 by screws 43 parallel to axes X40 and X42.
  • the tilting levers 405 and 406 of the rocker 404 are respectively connected to the drive bar 30 and to the drive bar 32 by means of connecting rods 50.
  • the tilting levers 405 and 406 of the rocker 404 are respectively connected by connecting rods 50 to the drive bar 34 and to the drive bar 36.
  • the tilting levers 425 and 426 of the rocker 424 are respectively connected to the drive bar 30 and to the drive bar 32 by means of connecting rods 52.
  • the tilting levers 425 and 426 of the rocker 424 are respectively connected by connecting rods 52 to the drive bar 34 and to the drive bar 36.
  • the position of the points of articulation of the connecting rods 50 and 52 on the tilting levers 405, 406, 425 and 426 is adjustable, in notches in the form of an arc of a circle provided on these tilting levers.
  • Bearings are respectively provided in the plates 22 and 24 to support the oscillating shafts 40 and 42 in their alternating rotational movement around their axes X40 and X42.
  • the plates 22 and 24 constitute support plates for the oscillating shafts 40 and 42.
  • bearings 220 and 240 are respectively provided in plates 22 and 24 to support upper oscillating shaft 40.
  • Bearing 220 is through, whereas bearing 240 is blind.
  • each of the bearings 220 and 240 is equipped with a bearing 620, respectively 640.
  • the parts of the shaft 40 engaged in the bearings 620 and 640 are axial ends 404A of the rockers 404 opposite the tube 402. Latches 404 of shaft 40 are articulated in plates 22 and 24.
  • the plates 22 and 24 carry two bearings 222 and 242 in which the rockers 424 of the lower oscillating shaft 42 are articulated, with the interposition of two bearings 622 and 642.
  • the bearing 222 is through, whereas the bearing 242 is blind.
  • it is the axial ends 424A of the rockers 424A opposite the tube 422 which are hinged in the bearings 622 and 642.
  • Bearings 620, 622, 640 and 642 are needle roller bearings. Alternatively, they could be ball bearings or any other type of bearing.
  • the two oscillating shafts 40 and 42 are driven in rotation, respectively around the axes X40 and X42 by a drive assembly 70 arranged on the side of the plate 22 opposite the knives 12 and 14, that is to say the outside of volume V2.
  • the movement or the control of the oscillating shafts 40 and 42 thus comes from the side of the plate 22 which can be described as a “control plate”.
  • the drive assembly 70 comprises an input shaft 72 driven by a continuous rotational movement represented by the arrow F3 as well as a first eccentric 74 and a second eccentric 76.
  • the second eccentric 76 is located closer to plate 22 than first eccentric 74.
  • the first eccentric 74 drives a first control rod 84 which is coupled to a first crank 428 which forms part of the oscillating shaft 42 and which is mounted at the end of the rocker 424 articulated in the bearing 222.
  • the second eccentric 76 drives a second control rod 86 coupled to another crank 408 which belongs to the upper oscillating shaft 40 and which is mounted at the end of the rocker 404 articulated in the bearing 220.
  • cranks 408 and 428 are respectively mounted on the rockers 404 and 424 which pass through the plate 22, on the side of these rockers opposite the tubes 402 and 422. Screws 45, parallel to the axes X40 and X42, are used to secure together the parts 404 and 408 of rocker shaft 40 and parts 424 and 428 of rocker shaft 42.
  • the first control rod 84 is further away, along the axis X2, from the plate 22 than the second control rod 86.
  • the second eccentric 76 and the second connecting rod 86 can be qualified as proximal eccentric and proximal connecting rod
  • the first eccentric 74 and the second connecting rod 84 can be qualified as distal eccentric and distal connecting rod.
  • a casing 90 is mounted on the plate 22, on the side of this plate opposite the tubes 402 and 422, that is to say opposite the volume V2.
  • the casing 90 is immobilized on the plate 22 by means of screws 47.
  • Two bearings 900 and 902 are respectively provided in the casing 90 to support the ends of the cranks 408 and 428 opposite the rockers 404 and 424 on which they are respectively fixed.
  • Two bearings 920 and 922 are respectively arranged in the bearings 900 and 902 to support the cranks 408 and 428 in the bearings 900 and 902, with the possibility of rotation, respectively around the axes X40 and X42. More specifically, the ends of the cranks 408 and 428 opposite the rockers 404 and 424 are mounted in the inner rings of the bearings 920 and 922, while the outer rings of these bearings are immobilized in the bearings 900 and 902.
  • the bearings 900 and 902 are formed by caps mounted in corresponding housings 904 and 906 formed in the bottom wall 92 of the casing 90 which is parallel to the plate 22.
  • Each cap 900, respectively 902 is formed by a ring 900A, 902A respectively, and a cover 900B, 902B respectively.
  • the bearings 900 and 902 are therefore blind.
  • the mounting of the bearings or caps 900 and 902 in the housings 904 and 906 of the casing 90 makes it possible to adjust the position of the bearings 920 and 922 with respect to the casing 90 and to solve a possible problem of hyper-statism of the oscillating shafts 40 and 42, due to the installation of three bearings along the length of each of these shafts.
  • the rings 900A and 902A are mounted with play in the housings 904 and 906 and are positioned radially according to the actual positions of the bearings of the shafts 40 and 42 in the plates 22 and 24 and the actual geometry of the shafts 40 and 42. once positioned, they are tightened by screws parallel to the axes X40 and X42 on the bottom wall 92 of the casing 90.
  • the caps 900 and 902 are therefore adjustable radially with respect to the axes X40 and X42.
  • Bearings 920 and 922 can be the same type or a different type from bearings 620, 640, 622 and 642.
  • bearings 920 and 922 are roller bearings.
  • the oscillating shafts 40 and 42 are supported at their two ends, both at the level of the plate 24 and at the level of the housing 90.
  • the cranks 408 and 428 are not cantilevered beyond the control plate 22 with respect to the area located between the two plates 22 and 24, which avoids the risk of deformation of the shafts 40 and 42 during operation of the shedding device 2, especially for the lower oscillating shaft 42 which would be the most subject to deformations in the absence of the bearing 902 because its crank 428 is furthest from the control plate 22
  • This shedding device 2 can therefore operate reliably at high speed, in particular at speeds greater than 1000 picks/minute.
  • the casing 90 contains the two eccentrics 74 and 76, the two control rods 84 and 86 and the two cranks 408 and 428.
  • the contour of the casing 90 in contact with the plate 22 is continuous and provided with a seal 93
  • the housing 90 supports a bearing 94 of the input shaft 72 which is also provided with a seal.
  • the housing 90 defines a closed volume capable of receiving oil which can ensure the lubrication of the bearings 220, 222, 900, 902 and of the bearing 94 of the input shaft 72.
  • a single bearing 902 is formed in the housing 90 to support the crank 428, while the crank 408 extends cantilevered beyond the bearing 220 with respect to the control plate. 22.
  • the oscillating shaft 42 which is driven by the first distal control rod 84 is supported by three bearings 222, 242 and 902. Each of these bearings is equipped with a bearing 622, 642 or 922.
  • This embodiment is suitable for small format looms, for example whose harness comprises less than 2688 collars, for which it is possible to support by means of only two bearings 220 and 240 the upper oscillating shaft 40 driven by the second proximal connecting rod 86, insofar as the torque produced by the deformation force applied by this connecting rod to the crank 408, relative to the bearing 220 of the plate 22, is relatively limited, in all cases more limited than the torque produced by the deformation force applied by the first distal connecting rod 84 on the crank 428 with respect to the bearing 242.
  • the invention is represented in the case where the oscillating shaft driven by the first distal connecting rod 84 is the lower oscillating shaft 42. It is however applicable to the opposite case where it is the upper oscillating shaft 40 which is driven by the first distal link. In this case, if a single bearing is provided in the housing 90 as in the second embodiment, this bearing supports the upper oscillating shaft 40.
  • the invention is not limited to the case where the two series of knives 12 and 14 are connected to the drive bars by connecting rods such as the connecting rods 26.
  • the invention can be applied to the case where the two series of knives are each grouped together on a frame of claws suspended from two drive bars.
  • some or all of the bearings 220, 222, 240, 242, 900 and 902 can be plain bearings, without bearings.
  • the parts 404, 408, 424 and 428 of the shafts 40 and 42 are then directly articulated in these bearings.
  • the caps are omitted and the bearings 900 and/or 902 are made directly in the wall 92 of the casing 90.

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

Claims (10)

  1. Fachbildungsvorrichtung (2) für Webmaschine vom Typ Jacquard (M), umfassend
    - zwei Reihen von Messern (12, 14), die sich parallel zu einer Längsachse (X2) der Fachbildungsvorrichtung erstrecken, die von einer alternativen vertikalen Bewegung (F2) in Phasenopposition erregt werden und am jedem ihrer Enden mit einer Antriebsstange (30, 32, 34, 36) verbunden sind;
    - eine obere Schwenkwelle (40) und eine untere Schwenkwelle (42), die sich übereinander erstrecken, und die jeweils, an jedem ihrer Enden, mit zwei Kipphebeln (405, 406, 425, 426) versehen sind, die jeweils durch eine Verbindungsstange (50, 52) verbunden sind;
    - zwei Chassisplatten (22, 24), zwischen denen sich die zwei Reihen von Messern und die Schwenkwellen erstrecken, und die mit Lagern (220, 222, 240, 242) zur gelenkigen Verbindung der Schwenkwellen versehen sind;
    - eine Eingangswelle (72), die von einer kontinuierlichen Rotationsbewegung (F3) erregt wird und mit einem ersten Exzenter (74) und einem zweiten Exzenter (76) ausgestattet ist, die in der Nähe einer ersten Platte (22) aus den zwei Chassisplatten (22, 24) außerhalb eines Volumens (V2) angeordnet sind, das zwischen diesen Platten definiert ist, wobei der erste Exzenter eine erste Steuerstange (84) antreibt, die auf eine erste Kurbel (428) gespannt ist, die zu einer ersten Schwenkwelle (42) von den zwei Schwenkwellen (40, 42) gehört, wobei der zweite Exzenter eine zweite Steuerstange (86) antreibt, die auf eine zweite Kurbel (408) gespannt ist, die zur zweiten Schwenkwelle (40) von den zwei Schwenkwellen gehört, und wobei die erste Steuerstange weiter von der ersten Platte entlang der Längsachse (X2) als die zweite Steuerstange entfernt ist,
    dadurch gekennzeichnet, dass die zwei Exzenter (74, 76), die zwei Steuerstangen (84, 86) und die zwei Kurbeln (408, 428) in einem Gehäuse (90) enthalten sind, das mindestens ein Lager (902) zur zusätzlichen gelenkigen Verbindung der Schwenkwelle (42) stützt.
  2. Fachbildungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse (90) außerdem ein Lager (900) zur zusätzlichen gelenkigen Verbindung der Schwenkwelle (40) stützt.
  3. Fachbildungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Schwenkwelle die untere Schwenkwelle (42) ist.
  4. Fachbildungsvorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die erste Schwenkwelle die obere Schwenkwelle (40) ist.
  5. Fachbildungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede Schwenkwelle (40, 42) ein hohles Rohr (402, 404) umfasst, das an jedem seiner Enden auf einer Wippe (404, 424) fixiert ist, die zwei Kipphebel (405, 406, 425, 426) beinhaltet, und dadurch, dass jede Wippe in einem Lager (220, 222, 240, 242) einer der Chassisplatten (22, 24) gelenkig verbunden ist.
  6. Fachbildungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Durchmesser des hohlen Rohrs (402, 404) einer Schwenkwelle (40, 42) im Bereich zwischen 80 und 160 mm liegt, vorzugsweise zwischen 100 und 140 mm, noch bevorzugter etwa 120 mm beträgt.
  7. Fachbildungsvorrichtung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass die erste Kurbel (428) auf einer Wippe (424) der ersten Schwenkwelle (42) fixiert ist und im Lager (902) gelenkig verbunden ist, das vom Gehäuse (90) gestützt wird.
  8. Fachbildungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jedes Gelenklager (900, 902), das vom Gehäuse gestützt wird, mit einem Radlager (920, 922) ausgestattet ist, in das ein Teil (408, 428) einer der Schwenkwellen (40, 42) eingeführt ist.
  9. Fachbildungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jedes Gelenklager, das vom Gehäuse (90) gestützt wird, von einer Kappe (900, 902) gebildet ist, die radial mit Bezug auf die Achse (X40, X42) der Schwenkwelle (40, 42) einstellbar ist, die in einer Aufnahme (902, 904) einer Wand (92) des Gehäuses montiert und auf die Wand des Gehäuses geklemmt ist.
  10. Webmaschine vom Typ Jacquard (M), umfassend eine Fachbildungsvorrichtung (2) nach einem der vorhergehenden Ansprüche.
EP20166942.1A 2019-04-03 2020-03-31 Fachbildungsvorrichtung und webmaschine vom typ jacquard, die mit dieser vorrichtung ausgerüstet ist Active EP3719187B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1903572A FR3094726B1 (fr) 2019-04-03 2019-04-03 Dispositif de formation de la foule et métier à tisser de type Jacquard incorporant un tel dispositif

Publications (2)

Publication Number Publication Date
EP3719187A1 EP3719187A1 (de) 2020-10-07
EP3719187B1 true EP3719187B1 (de) 2023-07-12

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EP20166942.1A Active EP3719187B1 (de) 2019-04-03 2020-03-31 Fachbildungsvorrichtung und webmaschine vom typ jacquard, die mit dieser vorrichtung ausgerüstet ist

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EP (1) EP3719187B1 (de)
CN (1) CN111793875B (de)
FR (1) FR3094726B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114592261B (zh) * 2022-03-15 2023-10-27 嵊州市和丰电子科技有限公司 矮机身低重量高稳定性提花机
FR3139349A1 (fr) 2022-09-07 2024-03-08 Staubli Lyon Dispositif de formation de la foule et métier à tisser de type Jacquard incorporant un tel dispositif

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772791B1 (fr) * 1997-12-24 2000-01-28 Staubli Sa Ets Actionneur rotatif electrique pour la formation de la foule sur un metier a tisser, mecanique d'armure et metier a tisser
FR2802219B1 (fr) * 1999-12-14 2002-10-18 Staubli Sa Ets Dispositif de formation de la foule pour metier a tisser de type jacquard
FR2854642B1 (fr) * 2003-05-06 2005-07-08 Staubli Lyon Dispositif de formation de la foule et metier a tisser du type jacquard equipe d'un tel dispositif
JP3984562B2 (ja) * 2003-05-16 2007-10-03 津田駒工業株式会社 織機の開口装置
CN201915195U (zh) 2010-12-21 2011-08-03 常熟纺织机械厂有限公司 提花机的开口装置
CN105483895A (zh) * 2016-01-21 2016-04-13 张军波 一种共轭凸轮提花开口装置
CN107700013A (zh) * 2017-11-20 2018-02-16 常熟纺织机械厂有限公司 结构改进的提花机齿轮箱
CN208562678U (zh) * 2018-05-28 2019-03-01 上海氟赫滋精工科技有限公司 一种提花机

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EP3719187A1 (de) 2020-10-07
CN111793875B (zh) 2023-07-21
FR3094726B1 (fr) 2021-04-23
FR3094726A1 (fr) 2020-10-09
CN111793875A (zh) 2020-10-20

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