EP0699786A2 - Dispositif de formation de la foule - Google Patents

Dispositif de formation de la foule Download PDF

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Publication number
EP0699786A2
EP0699786A2 EP95113778A EP95113778A EP0699786A2 EP 0699786 A2 EP0699786 A2 EP 0699786A2 EP 95113778 A EP95113778 A EP 95113778A EP 95113778 A EP95113778 A EP 95113778A EP 0699786 A2 EP0699786 A2 EP 0699786A2
Authority
EP
European Patent Office
Prior art keywords
knives
pair
knife
profile
forming device
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
EP95113778A
Other languages
German (de)
English (en)
Other versions
EP0699786A3 (fr
EP0699786B1 (fr
Inventor
Martin Burkert
Siegmund Tremer
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 GmbH
Original Assignee
Staeubli GmbH
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 Staeubli GmbH filed Critical Staeubli GmbH
Publication of EP0699786A2 publication Critical patent/EP0699786A2/fr
Publication of EP0699786A3 publication Critical patent/EP0699786A3/fr
Application granted granted Critical
Publication of EP0699786B1 publication Critical patent/EP0699786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/10—Centre-shed dobbies, i.e. shed formed by lifting some threads and lowering the others from central shed-closed position

Definitions

  • the invention relates to a shedding device for actuating shafts in a dobby with a pair of opposing and mutually movable knives and with a plurality of pivoting levers connected to the shafts, the first end of which faces the knives is provided with a first connecting device with which the swivel levers can optionally be connected to one of the knives, and to first profile devices which can be rotated about axes which run essentially in the direction of movement of the knives, the profile devices in each case at least one profile rotating around its axis of rotation in a closed line and moving in the axial direction have, and wherein each knife is engaged with at least one profile.
  • Such a shedding device is known from European patent application EP-A-0 566 506.
  • This shedding device works as a closed shank dobby, in which after a shedding cycle all stems, including those that are to take the same position in the next cycle, return to the central position.
  • double hooks provided at one end of the swivel lever can be latched into one of the two knives which are close together in this position.
  • the swivel levers are articulated on a common axis at their other end.
  • the shafts which are articulated on the swivel levers can thus be deflected to form an upper or a lower compartment when the knives move.
  • this object is achieved in a first solution by a shed forming device of the type mentioned, which is characterized in that the pivoting levers are provided at their second end with a second connecting device, with which they can be positioned with a knife of a second pair of mutually opposite and Knives which can be moved relative to one another can be connected, and that second profile devices are provided, the knives of the second pair in each case engaging with at least one profile of the second profile devices.
  • a shed forming device of the type mentioned at the outset which is characterized in that the pivot levers are provided at their second end with a second connecting device, by means of which they can be positioned opposite one another with a knife of a second pair Knives movable against one another can be connected, the knives of the second pair each engaging at least one profile of the first profile devices.
  • the shed training devices according to the invention enable operation as an open shed, closed shed or partially closed shed dobby.
  • FIG. 1 shows an exemplary embodiment of a shed forming device according to the invention, in which two pairs of knives 11A, 11B and 11C, 11D, each of which can be moved relative to one another, can be moved via driven profile devices in the form of cam cylinders 16.
  • the main axes of the cam cylinders 16 are arranged perpendicular to the longitudinal extent of the knives.
  • engagement pins 23 projecting beyond the end faces of the knives and extending in the longitudinal direction of the knives are provided which are preferably attached cam rollers 12 which engage in profiles in the form of grooves 24 in the lateral surface of the cam cylinder.
  • the grooves in the circumferential surface of the cam cylinders each run along self-contained lines which move in the direction of the axis of rotation of the cam cylinders and which are designed depending on the desired knife movement.
  • a large slope of the lines leads to a quick movement of the knives, while a slight slope of the lines results in a slow movement of the knives. In the areas with maximum and minimum knife deflection, these lines can therefore be designed such that they have no incline in order to obtain an extended knife standstill in order to achieve large standstill angles.
  • the grooves in each of the curved cylinders assigned to one of the knife ends of a knife each have the same shape.
  • the grooves provided on each cam cylinder for the two knife ends of an associated pair of knives are preferably complementary to one another.
  • cam cylinders In order to avoid changing the direction of rotation of the cam rollers in the case of the groove cam principle, it would also be possible to form a suitable projecting profile on the cam cylinders, which engages in a correspondingly adapted device at the ends of the knives, for example in the form of two cam rollers set in relation to one another. It would also be possible to provide the cam cylinders with grooves that are wider than the diameter of the cam rollers used, and to attach two cam rollers offset to one another at each knife end, each of which only runs on one side surface of the groove.
  • the knives are each slidably mounted in guides 20 which extend essentially in the longitudinal direction of the cam cylinders.
  • the cam cylinders 16 are each mounted on rotatably mounted shafts 17.
  • one of the shafts 17 with a drive shaft 17 'in Connection are provided, for the synchronous drive of the second cam cylinder 16, for example, a belt transmission can be provided, in which, for example, a sprocket or a pulley 19 of the same circumference is provided on both shafts 17, which are connected to one another via a chain or a toothed belt 18.
  • the second cam cylinder 16 can also be driven via a gearwheel gear or a push rod mechanism with eccentrically attached pins at the end of the cam cylinder.
  • pivot levers 14 and 15 extend, on which rods 21 and 22 are articulated substantially in the middle for actuating the shafts.
  • the swivel levers each have connecting devices on both ends for optional connection to one of the knives of an associated pair of knives, for example in the form of articulated double hooks 13, which can be selectively connected to one of the knives associated with the corresponding end of the swivel lever in a closed position of the knives, as in FIG Fig. 1 shown by the knives 11C and 11D, pivotable and thus engageable.
  • triggering and control devices known in the prior art are provided (not shown in FIG. 1).
  • FIG. 2 shows an alternative embodiment of a shed forming device according to the invention, in which both pairs of knives 111A, 111B and 111C, 111D are driven by means of a pair of cam cylinders 116 common to both pairs of knives.
  • the cam cylinders 116 are arranged with their axes of rotation 117 along the direction of movement of the knives essentially in an imaginary plane which lies between the imaginary planes formed by the respective knife pairs 111A, 111B and 111C, 111D.
  • engagement pins are provided, on which, again, curves 112 are preferably attached, each of which engages with profiles 124 on the cam cylinders 116.
  • the knives of the respective pairs of knives 111A, 111B and 111C, 111D can be moved parallel to one another in their mutual position when the cam cylinders are rotated.
  • the profiles on the cam cylinders 116 are designed such that the two pairs of knives, the respective engagement pins of which engage with cam rollers 112 on mutually opposite regions of the lateral surface of the rollers with the profiles 124, are displaced essentially in opposite phase to one another in order to operate as an open subject Enable dobby, as will be explained in more detail later.
  • the pivot levers 114 and 115 are actuated again, at the two ends of which connecting devices in the form of double hooks 113 are provided.
  • the swivel levers 114 and 115 can each be selectively engaged with one of the knives of a pair of knives via the double hooks 113, the change of engagement in a closed position of the knives, as is achieved by the knives 111C , 111D in FIG. 2 is possible.
  • rods 121 and 122 are articulated essentially in the middle of the swivel levers, which operate the shafts to serve.
  • the knives are each held in guides in which they can be displaced essentially in the longitudinal direction of the axes 117 (the guides are not shown in FIG. 2).
  • the cam cylinders can be driven synchronously with one another via a drive (not shown), for example by means of a belt transmission, a gear transmission or an eccentric transmission.
  • the profiles 124 may be in the form of grooves in the roll surface, but may also be in the form of elevations which are incorporated in appropriately adapted devices, e.g. in the form of counter profiles, engage at the ends of the knives.
  • FIG. 3 shows a schematic path-time diagram for the compartment movement and the knife spacing of the compartment formation devices according to the invention shown in FIGS. 1 and 2.
  • the tray movement which is shown as the ordinate in FIG. 3 and which has an upper, a middle and a lower position as an excellent position, is obtained via the rods 21 and 22 which are articulated on the pivot levers 14 and 15.
  • 3 shows the movement of the knives in the form of the mutual knife spacing, for example curve 35 representing the distance between knives 11C and 11D and curve 36 representing the distance between knives 11A and 11B.
  • FIG. 3 shows a full cycle for the knife movement, which corresponds to a rotation of the cam cylinders of 360 ° for the groove shape shown in FIG. 1.
  • the compartment is open with the stems in either the lower or upper position.
  • the weft thread (weft 1) can be inserted through the compartment.
  • the distance of the pair of knives 11C, 11D which is represented by the curve 35, is small at this position, so that in this position an engagement selection of the double hook for engagement with either the knife 11C or the knife 11D can be carried out.
  • the distance between the knives 11A and 11B shown in the curve 36 is large in this initial position, so that engagement selection for the double hook at the other end of the pivot levers 14 and 15 is not possible.
  • the knives in the two pairs of knives 11A, 11B and 11C, 11D move in phase opposition to one another, ie, according to curve 35, knives 11C and 11D move away from one another, while according to curve 36, knives 11A and 11D reduce their mutual distance.
  • the correspondingly controlled shaft is maintained in its upper or lower position according to curves 31 and 34 or in the correspondingly opposite lower or upper position according to curves 33 and 32 convicted. This can best be illustrated with reference to FIG. 1.
  • FIG. 4 the workflow is in one Closed compartment dobby shown how it could be achieved with the device according to the present invention if the movement of the two pairs of knives 11A, 11B and 11C, 11D takes place with a modifying phase position.
  • curve 39 shows the distance between the knives 11C, 11D
  • curve 40 shows the distance between the knives 11A, 11B.
  • FIG. 5 shows the mode of operation of the shed forming device according to the invention when operated as a partially closed shed dobby.
  • the upper curves 41 to 44 denote the tray movement, while the lower curves 45 and 46 each represent the distance between the knives 11A, 11B and 11C, 11D.
  • the distance between the knives 11A, 11B according to curve 45 is large, while the distance between the knives 11C, 11D is small.
  • the distance between the knives 11A, 11B is reduced according to curve 45. As a result, all shafts begin to move towards a middle position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Blinds (AREA)
EP95113778A 1994-09-01 1995-09-01 Dispositif de formation de la foule Expired - Lifetime EP0699786B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9414192U 1994-09-01
DE9414192U DE9414192U1 (de) 1994-09-01 1994-09-01 Fachbildungsvorrichtung

Publications (3)

Publication Number Publication Date
EP0699786A2 true EP0699786A2 (fr) 1996-03-06
EP0699786A3 EP0699786A3 (fr) 1997-09-03
EP0699786B1 EP0699786B1 (fr) 1998-01-28

Family

ID=6913167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113778A Expired - Lifetime EP0699786B1 (fr) 1994-09-01 1995-09-01 Dispositif de formation de la foule

Country Status (2)

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EP (1) EP0699786B1 (fr)
DE (2) DE9414192U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516947A2 (fr) † 2003-09-17 2005-03-23 Groz-Beckert KG Système d'entraínement de lames pour machines à tisser
DE19804041B4 (de) * 1997-02-06 2005-10-06 Texo Ab Dobby zur Steuerung der Bewegungen der Schaftrahmen eines Webautomaten
DE19861000B4 (de) * 1997-02-06 2006-11-02 Texo Ab Dobby zur Steuerung der Bewegungen der Schäfte eines Webautomaten
EP2278052A1 (fr) 2009-07-20 2011-01-26 Groz-Beckert KG Dispositif d'entraînement pour un cadre de lisses d'un métier à tisser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9414192U1 (de) * 1994-09-01 1994-10-27 Staeubli & Trumpelt Fachbildungsvorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566506A1 (fr) 1992-04-14 1993-10-20 STAUBLI & TRUMPELT GmbH MASCHINENFABRIK Mécanisme pour la commande alternative des couteaux dans les ratières lourdes du type à pas fermé

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE32559C (de) * ch. J. kane und R. E. lester in New-York Geschirr für mechanische Webstühle
DE39816C (de) * J. A. S. BlER-NATZKI in Hamburg und R. E. LESTER in New-York Webstuhlgeschirr
DE2338124C3 (de) * 1973-07-27 1980-05-08 Johann Kaiser Gmbh & Co Kg, Maschinenfabrik Und Eisengiesserei, 8580 Bayreuth Doppelhub-Schaftmaschine Bauart Hattersley
CH643890A5 (de) * 1979-11-28 1984-06-29 Setafin Sa Schaftantrieb an einer rundwebmaschine.
CH653385A5 (en) * 1981-05-15 1985-12-31 Setafin Sa Heald-frame drive on a circular weaving machine
DE9414192U1 (de) * 1994-09-01 1994-10-27 Staeubli & Trumpelt Fachbildungsvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566506A1 (fr) 1992-04-14 1993-10-20 STAUBLI & TRUMPELT GmbH MASCHINENFABRIK Mécanisme pour la commande alternative des couteaux dans les ratières lourdes du type à pas fermé

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804041B4 (de) * 1997-02-06 2005-10-06 Texo Ab Dobby zur Steuerung der Bewegungen der Schaftrahmen eines Webautomaten
DE19861000B4 (de) * 1997-02-06 2006-11-02 Texo Ab Dobby zur Steuerung der Bewegungen der Schäfte eines Webautomaten
EP1516947A2 (fr) † 2003-09-17 2005-03-23 Groz-Beckert KG Système d'entraínement de lames pour machines à tisser
EP1516947B2 (fr) † 2003-09-17 2012-08-29 Groz-Beckert KG Système d'entraînement de lames pour machines à tisser
EP2278052A1 (fr) 2009-07-20 2011-01-26 Groz-Beckert KG Dispositif d'entraînement pour un cadre de lisses d'un métier à tisser

Also Published As

Publication number Publication date
EP0699786A3 (fr) 1997-09-03
DE59501355D1 (de) 1998-03-05
DE9414192U1 (de) 1994-10-27
EP0699786B1 (fr) 1998-01-28

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