EP0666345B1 - Dispositif pour accoupler un élément d'entraînement à un arbre d'ensouple dans un métier à tisser - Google Patents

Dispositif pour accoupler un élément d'entraînement à un arbre d'ensouple dans un métier à tisser Download PDF

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Publication number
EP0666345B1
EP0666345B1 EP95100222A EP95100222A EP0666345B1 EP 0666345 B1 EP0666345 B1 EP 0666345B1 EP 95100222 A EP95100222 A EP 95100222A EP 95100222 A EP95100222 A EP 95100222A EP 0666345 B1 EP0666345 B1 EP 0666345B1
Authority
EP
European Patent Office
Prior art keywords
drive element
warp
tooth
tooth system
beam 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.)
Expired - Lifetime
Application number
EP95100222A
Other languages
German (de)
English (en)
Other versions
EP0666345A1 (fr
Inventor
Bart Lefever
Marc Gruwez
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.)
Picanol NV
Original Assignee
Picanol NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Picanol NV filed Critical Picanol NV
Publication of EP0666345A1 publication Critical patent/EP0666345A1/fr
Application granted granted Critical
Publication of EP0666345B1 publication Critical patent/EP0666345B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/06—Warp let-off mechanisms

Definitions

  • the invention relates to a device for attaching a drive element to a warp beam shaft in a weaving machine.
  • a device for fastening a drive element to a warp beam in weaving machines is also known (EP 451 895 A1), in which the drive element is arranged on a drive shaft of a drive unit of the weaving machine which is driven by a drive motor via gearwheels.
  • the shaft of the warp beam is provided with a thread which can be screwed to a thread of the drive element of the drive shaft, so that the drive shaft is thereby connected to the warp beam shaft.
  • This device has several disadvantages, namely that screwing the drive element to the warp beam shaft takes a relatively long time and is relatively complicated, and that it can only be used in conjunction with certain warp beams.
  • the invention has for its object to provide a device of the type mentioned, which allows easy attachment of the drive element and which excludes a mutual rotation between the drive element and warp beam shaft in operation.
  • the warp beam shaft is provided at one end with an axial toothing, with which the drive element can be brought into engagement with a toothing
  • a tensioning element is provided, which also has a toothing with the warp beam shaft or the toothing of the drive element can be brought into engagement toothing and which can be rotated in the circumferential direction by means of clamping means such that tooth flanks of the toothing of the drive element and the toothing facing away from one another of the tensioning element can be moved away from one another in the circumferential direction and can be pressed against opposite tooth flanks of the toothing of the warp beam shaft, or that tooth flanks facing away from one another of the toothing of the warp beam shaft and the toothing of the tensioning element can be moved away from one another in the circumferential direction and can be pressed against opposite tooth flanks of the toothing of the drive element.
  • the device according to the invention has the advantage that the drive element can be attached to the warp beam shaft by a simple axial movement, so that the attachment can be carried out quickly.
  • the device according to the invention means that the drive element can be fastened on the warp beam shaft at almost any point in the axial direction without play.
  • the clamping element is a disk which is held on the drive element by means of at least one axially directed screw, and that at least one counter-rotating movement of the clamping element and drive element between the clamping element and the drive element when the screw is turned causing wedge connection is provided. Since the tensioning element is arranged on the drive element, it is not necessary to also change the tensioning means when the warp beam is replaced.
  • the axially directed arrangement of the at least one screw has the advantage that it is accessible regardless of the position of the warp beam.
  • the weaving machine shown only schematically in FIGS. 1 and 2 contains a frame (1) in which a warp beam (2) is mounted in a known manner by means of bearings (3) in such a way that it is inserted into the frame (1) and out of the frame (1) can be removed.
  • the warp beam (2) contains a warp beam shaft (4) on which warp beam discs (5) are arranged.
  • the warp threads (not shown) are wound onto the warp beam shaft (4) between the warp beam discs (5).
  • the weaving machine also contains a drive unit (6) for the warp beam (2).
  • This drive unit (6) contains a drive motor (7), on the motor shaft (8) of which a gear (9) is arranged in a rotationally fixed manner.
  • the gear wheel (9) meshes with a gear wheel (10) which can be attached to an extension (11) of the warp beam shaft (4) in the manner explained below and can be fastened by means of a tensioning element (12).
  • the gearwheel (10) is held by means of an adjustment mechanism (14) and can be pushed onto the shoulder (11) of the warp beam shaft (4) in the direction of the axis (13) of the warp beam (2).
  • the adjustment mechanism (14) contains a holder (15) which is fastened to the gearwheel (10) by means of screws.
  • the holder (15) is provided with an undercut recess (16) in which a thickened head (17) of an actuating stamp (18) is arranged with a relatively large amount of play.
  • the actuating plunger (18) is provided with toothed rack teeth, in which a toothed wheel (19) engages, which can be rotated by means of a lever (20) or a crank. 1, the gear (10) is supported on the gear (9) and on the holder (15) on the head (17) of the mounting plunger (18). It is also possible to provide other or additional support means.
  • the gearwheel (10) In order to connect the gearwheel (10) to the warp beam shaft (4), it is pushed onto the shoulder (11) of the warp beam shaft (4) by means of the adjustment mechanism (14). Then it is held by the warp beam shaft (4) and thus stored in the bearings (3). Since the recess (16) and the head (17) interact with play, the holder (15) can remain attached to the gear (10) during weaving. In order to make it easier to put on the gearwheel (10), it is first arranged under the longitudinal axis (13) of the warp beam shaft (4) and is raised when it is put on.
  • the approach (11) is provided with an axial external toothing (31), for example a multi-spline profile.
  • the gear wheel (10) is provided with an axial internal toothing (21) with which it is attached to this external toothing (31).
  • the tensioning element (12) also has an axial internal toothing (22) with which it is also attached to the external toothing (31).
  • Have in practice the internal teeth (21) of the gear (10) and the internal teeth (22) of the tensioning element (12) have the same dimensions. However, they are shown in FIGS. 4 and 6 and in FIGS. 9 and 10 with different dimensions in order to explain the principle of operation more clearly.
  • the gearwheel (10) and the disk-shaped clamping element (12) can be rotated and fixed relative to one another in the circumferential direction with respect to the axis (13) by means of clamping means (23), which will be explained in detail later.
  • clamping means (23) which will be explained in detail later.
  • the gearwheel (10) is plugged onto the shoulder (11)
  • the internal toothing (21) of the gearwheel (10) and the internal toothing (22) of the tensioning element (12) are aligned with one another (FIG. 9). In this position, they are aligned together with the external toothing (31) of the extension (11) of the warp beam shaft (4) and plugged onto it.
  • the teeth of the two internal gears (21, 22) can be sharpened like a blade on the front side.
  • the gearwheel (10) and the tensioning element (12) are rotated relative to one another by actuating the tensioning means (23), so that the tooth flanks (35) of the teeth of the internal toothing (21) of the gearwheel (10) and the tooth flanks ( 33) of the internal toothing (22) of the clamping element (12) on opposite tooth flanks (32, 34) of the external toothing (31) of the shoulder (11) and pressed against them, as shown in Fig. 10.
  • the direction of the warp thread tension is indicated by the arrow (Q).
  • the relative rotation between the gear wheel (10) and the tensioning means (12) is selected so that the forces in the direction of the warp thread tension (Q) from the tooth flanks (34) of the external toothing (31) of the shoulder (11) directly onto the tooth flanks ( 35) of the internal toothing (21) of the gear (11) are transmitted.
  • a warp beam (2) is driven by the warp thread tension during weaving and is braked by the drive unit (6), the greatest forces occur in the direction of the warp thread tension. It is therefore expedient to transmit these greatest forces directly between the toothing (21) of the gear and the toothing (31) of the shoulder (11), so that the clamping means (23) are not loaded with these forces.
  • the clamping element (12) is fastened to the toothed wheel (10) by means of three axially directed screws (26) which are offset by 120 °.
  • the clamping element (12) is provided in the area of these screws (26) with projections (24) which engage in recesses (25) in the gearwheel (10).
  • the tensioning element (12) is provided in the area of the projections (24) with recesses (27) for the screws (26), which have a relatively large clearance with the screws (26) in the circumferential direction.
  • the projections (24) and the recesses (25) are provided with opposing wedge surfaces (28, 29) which extend in the radial and axial directions.
  • Fig. 8 it is also shown that the extension (11) with the external toothing (31) by means of screws (30) is attached to an end face of the warp beam shaft (4).
  • the gear wheel (19) of the adjustment mechanism (14) is not driven by means of a manually operated lever (20), but rather by means of a servomotor.
  • the stamp (18) can be adjusted hydraulically or pneumatically.
  • Another embodiment of the invention provides that, instead of the tensioning means (23), other tensioning means are used constructively in order to bring about the mutual rotation of the tensioning element (12) and gear (10).
  • other tensioning means are used constructively in order to bring about the mutual rotation of the tensioning element (12) and gear (10).
  • Radially adjustable wedges can also be provided by means of screws which penetrate into grooves in order to cause twisting.
  • wedges are provided on the gearwheel (10) and the associated grooves on the tensioning element.
  • tensioning element and tensioning means are provided on the warp beam, tensioning means being provided between the tensioning element and the warp beam, which impose a mutual rotation on the toothing of the tensioning element and the toothing of the warp beam in such a way that the toothing of the tensioning elements and the Teeth of the drive element, such as a gear, are clamped against each other.
  • a fastening part with axial external toothing is provided on the drive element, while the warp beam is provided with an axial internal toothing that can cooperate with the axial toothing of the aforementioned fastening part.
  • the tensioning means and the tensioning element can be provided on the drive element on the warp beam.
  • gearwheel (10) is held in the adjustment mechanism (14) with a relatively large amount of play, it may also be possible under certain circumstances to compensate for deviations in the radial direction from the axis of the warp beam shaft.

Landscapes

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

Claims (7)

  1. Dispositif pour fixer un élément d'entraînement (10) à un arbre d'ensouple (14) d'un métier à tisser, caractérisé en ce que l'arbre d'ensouple (4) est, à une extrémité, pourvu d'une denture axiale (31), à l'aide de laquelle l'élément d'entraînement (10) peut entrer en prise avec une denture (21), et qu'un élément de serrage (12) est prévu, qui lui aussi est pourvu d'une denture (22), pouvant entrer en prise avec la denture de l'arbre d'ensouple ou avec la denture de l'élément d'entraînement, et qui peut être mis en rotation dans la direction périphérique à l'aide de moyens de serrage (23), de telle sorte que : soit les profils opposés l'un à l'autre (33, 35) de la denture (21) de l'élément d'entraînement et la denture (22) de l'élément de serrage peuvent s'écarter l'une de l'autre dans la direction périphérique, et peuvent s'appuyer contre les profils opposés (32, 34) de la denture (31) de l'arbre d'ensouple, soit que des profils opposés l'un à l'autre (32, 34) de la denture (31) de l'arbre d'ensouple et la denture (22) de l'élément de serrage peuvent s'écarter l'une de l'autre dans la direction périphérique et peuvent venir s'appuyer contre les profils opposés (33, 35) de la denture (21) de l'élément d'entraînement.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de serrage (12) est un plateau, qui est maintenu contre l'élément d'entraînement (10) à l'aide d'au moins une vis (26) dirigée axialement, et qu'entre l'élément de serrage (12) et l'élément d'entraînement (10) sont prévus au moins un clavetage (28, 29), qui, lors de la rotation de la vis, provoque un mouvement de rotation en sens inverse de l'élément de serrage et de l'élément d'entraînement.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens de serrage (23) sont configurés de façon à tourner l'un par rapport à l'autre lors du serrage de l'élément d'entraînement (10) et de l'élément de serrage (12), de telle sorte que les profils (35) de la denture (21) de l'élément d'entraînement (10) viennent s'appuyer contre les profils (34) de la denture (31) de l'arbre d'ensouple (4), qui courent dans la direction du déroulement (Q) de l'ensouple (2).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'élément d'entraînement (10) est maintenu par un mécanisme de réglage (14) et peut être déplacé dans la direction axiale de l'arbre d'ensouple (4).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'élément d'entraînement (10) est une roue dentée qui est en prise avec une roue dentée d'entraînement (9), dont la longueur axiale correspond au moins à la longueur de la trajectoire de réglage du mécanisme de réglage (14).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'à l'arbre d'ensouple (4) est rapporté un prolongement (11), qui est pourvu d'une denture (31).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'arbre d'ensouple (4) est pourvu d'une denture extérieure (31), et que l'élément d'entraînement (10) et l'élément de serrage (12) comportent chacun des dentures intérieures (21, 22), qui peuvent venir s'emmancher sur la denture extérieure de l'arbre d'ensouple.
EP95100222A 1994-02-02 1995-01-10 Dispositif pour accoupler un élément d'entraînement à un arbre d'ensouple dans un métier à tisser Expired - Lifetime EP0666345B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400119A BE1008057A3 (nl) 1994-02-02 1994-02-02 Inrichting voor het aan elkaar bevestigen van een element en een kettingboom bij weefmachines.
BE9400119 1994-02-02

Publications (2)

Publication Number Publication Date
EP0666345A1 EP0666345A1 (fr) 1995-08-09
EP0666345B1 true EP0666345B1 (fr) 1997-06-18

Family

ID=3887936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100222A Expired - Lifetime EP0666345B1 (fr) 1994-02-02 1995-01-10 Dispositif pour accoupler un élément d'entraînement à un arbre d'ensouple dans un métier à tisser

Country Status (4)

Country Link
US (1) US5511586A (fr)
EP (1) EP0666345B1 (fr)
BE (1) BE1008057A3 (fr)
DE (1) DE59500314D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105908346A (zh) * 2016-06-28 2016-08-31 山东日发纺织机械有限公司 一种径轴自动上轴锁紧装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19724150C1 (de) * 1997-06-07 1998-11-19 Dornier Gmbh Lindauer Kettbaumkupplung
JP2000336553A (ja) * 1999-05-31 2000-12-05 Tsudakoma Corp 送出ワープビームの連結装置
DE102004054953B3 (de) * 2004-02-04 2005-07-21 Lindauer Dornier Gmbh Vorrichtung zum Drehantrieb eines Kettbaumes
DE102005019906B3 (de) * 2005-04-29 2006-03-30 Lindauer Dornier Gmbh Webmaschine mit lösbarer Verbindung zwischen einem Antriebsmittel und dem Kettbaum einer Webmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049126A (en) * 1932-02-23 1936-07-28 Maybach Motorenbau Gmbh Claw coupling
US2180597A (en) * 1937-09-30 1939-11-21 Bus George F Le Self-aligning clutch
US2366461A (en) * 1942-07-04 1945-01-02 Rca Corp Rotary shaft coupling
US2803323A (en) * 1954-12-13 1957-08-20 Gen Electric Positive engage positive stop clutch
FR1232740A (fr) * 1959-08-11 1960-10-11 Webstuhlbau Karl Marx Stadt Dispositif de support d'ensouples de chaîne et de tissu dans les métiers à tisser
US3220522A (en) * 1964-02-14 1965-11-30 Jr Thomas G Carter Positive clutch
US3603436A (en) * 1969-09-24 1971-09-07 Anchor Hocking Corp One-position clutch
US4869354A (en) * 1987-03-17 1989-09-26 Glen Brazier Flywheel disengagement assembly
SU1730244A1 (ru) * 1990-02-01 1992-04-30 Всесоюзный Научно-Исследовательский Институт Легкого И Текстильного Машиностроения Устройство дл закреплени наво на текстильной машине, преимущественно ткацком станке
BE1003988A3 (nl) * 1990-04-13 1992-07-28 Picanol Nv Inrichting voor het aandrijven van een boom bij een weefmachine.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105908346A (zh) * 2016-06-28 2016-08-31 山东日发纺织机械有限公司 一种径轴自动上轴锁紧装置
CN105908346B (zh) * 2016-06-28 2017-07-28 山东日发纺织机械有限公司 一种径轴自动上轴锁紧装置

Also Published As

Publication number Publication date
BE1008057A3 (nl) 1996-01-03
EP0666345A1 (fr) 1995-08-09
DE59500314D1 (de) 1997-07-24
US5511586A (en) 1996-04-30

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