EP0462035A1 - Geschlossenfach-Schaftmaschine für Webmaschinen - Google Patents

Geschlossenfach-Schaftmaschine für Webmaschinen Download PDF

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Publication number
EP0462035A1
EP0462035A1 EP91420197A EP91420197A EP0462035A1 EP 0462035 A1 EP0462035 A1 EP 0462035A1 EP 91420197 A EP91420197 A EP 91420197A EP 91420197 A EP91420197 A EP 91420197A EP 0462035 A1 EP0462035 A1 EP 0462035A1
Authority
EP
European Patent Office
Prior art keywords
frame
dobby
arm
dobby according
oscillating movement
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
EP91420197A
Other languages
English (en)
French (fr)
Other versions
EP0462035B1 (de
Inventor
Siegmund Horst 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 und Trumpelt GmbH Maschinenfabrik
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 und Trumpelt GmbH Maschinenfabrik filed Critical Staeubli und Trumpelt GmbH Maschinenfabrik
Publication of EP0462035A1 publication Critical patent/EP0462035A1/de
Application granted granted Critical
Publication of EP0462035B1 publication Critical patent/EP0462035B1/de
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
    • 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 present invention relates to dobbies for the control of heald frames which train the crowd on the weaving looms.
  • the mechanism For each heald frame a , the mechanism includes an arm b which is coupled to said frame by a pulling system c associated with a linkage or other connecting device; opposite its pivot point d , each arm b is equipped with a double hook e of the tilting type, controlled at one or the other of its ends by the reading device f containing the weaving program.
  • a pulling system c associated with a linkage or other connecting device
  • each arm b is equipped with a double hook e of the tilting type, controlled at one or the other of its ends by the reading device f containing the weaving program.
  • To the set of arms b are associated two independent knives g which are actuated to move simultaneously with the spacing and the approximation, on either side of a median position for which they are applied against the free end of each arm b .
  • the heald frame a will move vertically either upwards, either down, from the middle position for which the crowd is closed.
  • the stroke of each frame a can thus, when desired, be reduced by half compared to the case of conventional dobbies with open crowd.
  • the intermediate pivoting arm is pivotally mounted on a fixed axis while the additional actuation means are constituted by a cam mechanism.
  • the additional actuation means are constituted by a cam mechanism.
  • a follower roller carried by the pivoting arm considered, which is connected to the corresponding traction lever by a sliding system.
  • the actuating elements are brought together in pairs so that in each pair, one of said elements ensures normal control of the traction lever of the pair considered while the other is capable of giving the pivoting arm coupled to said lever an additional cyclic movement corresponding to the closed crowd.
  • STAUBLI French Patents 2,486,111
  • STAUBLI 2,106,164
  • fig. 1 is a diagram illustrating the arrangement of certain conventional heavy dobbies with a closed crowd.
  • Fig. 2 is a perspective view showing the arrangement of a dobby according to the invention.
  • Fig. 3 and 4 are cross sections of the oscillating chassis of the dobby according to fig. 2, the parts being shown in the two working positions of the corresponding actuating element.
  • Fig. 5 and 6 schematically illustrate the general operation of the dobby.
  • Fig. 7 finally shows two diagrams which show the movement imparted to one of the heald frames, by a dobby according to the invention in the upper part, by a conventional dobby of the type according to FIG. 1 in the lower part.
  • the dobby according to the invention comprises a set of actuating elements 1 (fig. 2) quite similar to those of a conventional dobby of the rotary type. It did not detail the arrangement of these elements 1 and it will be sufficient to remember that each of them is constituted by a cam 1 mounted on a shaft 2 common to all said elements 1, the angular connection of the eccentric 1 a with shaft 2 being provided by a coupling member (not shown) placed under the dependence of the dobby program reading device.
  • the eccentric 1a is housed in an eccentric opening of a connecting rod 1b of which the free end is coupled in 3a with a pull lever 3.
  • All the traction levers 3 of the dobby pivot on a common axis 4 oriented parallel to the shaft 2 and it is understood that when the eccentric 1 a is angularly connected with said shaft, the rotation of the latter over 180 ° imparted to the element 1 envisaged and to its traction lever 3 an oscillating movement.
  • the rotary dobbies is on the terminal spout 3b of the levers 3 that is fixed flue system associated with the frame envisaged smooth.
  • each traction lever 3 is articulated freely in 3 c a double arm 5 with a square profile which is equipped with a roller 6 at one of its ends , while the opposite end forms a mooring point for a collar 7 provided at the end of the pulling system 8 of one of the heald frames 9 of the loom.
  • the roller 6 is engaged with reduced clearance in a slot 10 a formed inside the profile of a movable part 10 forming a cam, so that the arm 5 is ultimately freely coupled, by three movable joints, at lever 3, to the draw system 8 and to the cam 10.
  • All the parts or cams 10 are engaged and clamped axially on two rods 11 oriented parallel to the shaft 2 and carried by lateral flanges 12. Each of these is secured to a lateral pivot 13 rotatably supported by the frame (not shown) of the dobby, so that the assembly 11-12 constitutes a sort of chassis capable of oscillating along the axis of the pivots 13, it being observed that this axis 13-13 passes through the center of symmetry of the light 10 a of each cam 10, which light defines the trajectory of the roller 6 which it controls.
  • One of the flanges 12 is joined by a link 14 to an end of an axle 15 secured to a toothed wheel 16 which meshes with a wheel 17 with a larger diameter wedged on the shaft 2.
  • the assembly 14 -15 forms an eccentric crankpin which, during the jerky rotation of the shaft 2, imparts to the chassis 11-12 and to the cams 10 mounted thereon an oscillating movement centered on the pivot axis defined by the pivots 13.
  • the diameter of the toothed wheel 17 is equal to twice that of the toothed wheel 16, so that the frame 11-12 is driven by two oscillations at each revolution of the shaft 2, the latter being, as usual in rotary dobbies, animated by an intermittent angular displacement with stop every 180 °.
  • the dobby according to the invention works without play.
  • the displacement of the frames 9 in operation in a closed crowd is carried out in a harmonious manner, without stopping in the middle closed position (the comparison with the lower diagram of FIG. 7 makes it clear the situation), which in fact eliminates harmful stresses and the phenomena of acceleration and braking mentioned at the beginning of this document.
  • the dobby is thus capable of working at significantly higher operating speeds than the usual heavy dobbies.
  • the invention is capable of being implemented with actuating elements produced as well according to the rotary system mentioned above and described as according to the HATTERSLEY system (hook scales).
  • actuating elements produced as well according to the rotary system mentioned above and described as according to the HATTERSLEY system (hook scales).
  • these cam mechanisms can themselves be replaced by any other suitable means of actuation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP91420197A 1990-06-15 1991-06-14 Geschlossenfach-Schaftmaschine für Webmaschinen Expired - Lifetime EP0462035B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007742 1990-06-15
FR9007742A FR2663347A1 (fr) 1990-06-15 1990-06-15 Ratiere a foule fermee pour metiers a tisser.

Publications (2)

Publication Number Publication Date
EP0462035A1 true EP0462035A1 (de) 1991-12-18
EP0462035B1 EP0462035B1 (de) 1994-08-03

Family

ID=9397840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420197A Expired - Lifetime EP0462035B1 (de) 1990-06-15 1991-06-14 Geschlossenfach-Schaftmaschine für Webmaschinen

Country Status (5)

Country Link
US (1) US5131436A (de)
EP (1) EP0462035B1 (de)
JP (1) JPH05279936A (de)
DE (1) DE69103223T2 (de)
FR (1) FR2663347A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690465A1 (fr) * 1992-04-28 1993-10-29 Staubli Trumpelt Gmbh Maschine Dispositif de verrouillage et de pré-sélection pour ratières lourdes du type à pas ferme.
DE19861000B4 (de) * 1997-02-06 2006-11-02 Texo Ab Dobby zur Steuerung der Bewegungen der Schäfte eines Webautomaten
DE19804041B4 (de) * 1997-02-06 2005-10-06 Texo Ab Dobby zur Steuerung der Bewegungen der Schaftrahmen eines Webautomaten
DE10343377B3 (de) † 2003-09-17 2005-04-28 Groz Beckert Kg Schaftantrieb für Webmaschinenschäfte
CN101709525B (zh) * 2009-11-19 2011-04-13 常熟纺织机械厂有限公司 旋转式电子多臂机的三开口开口机构
FR2957366B1 (fr) 2010-03-12 2012-04-13 Staubli Sa Ets Ratiere rotative et metier a tisser equipe d'une telle ratiere

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910040A1 (de) * 1968-04-08 1969-10-23 Staeubli Geb & Co Verfahren und Schaftmaschine mit Wippvorrichtung zum Weben von Gemischtbindungsgeweben mit Dreher- und Normalbindung
FR2106164A5 (de) * 1970-08-27 1972-04-28 Staeubli Ag
FR2486111A1 (fr) * 1980-07-01 1982-01-08 Staeubli Ag Ratiere a plusieurs positions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841281C2 (de) * 1978-09-22 1980-08-28 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld Steuerung für eine Rotations-Schaftmaschine
JPS6359438A (ja) * 1986-08-25 1988-03-15 村田機械株式会社 積極ドビ−機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910040A1 (de) * 1968-04-08 1969-10-23 Staeubli Geb & Co Verfahren und Schaftmaschine mit Wippvorrichtung zum Weben von Gemischtbindungsgeweben mit Dreher- und Normalbindung
FR2106164A5 (de) * 1970-08-27 1972-04-28 Staeubli Ag
FR2486111A1 (fr) * 1980-07-01 1982-01-08 Staeubli Ag Ratiere a plusieurs positions

Also Published As

Publication number Publication date
FR2663347A1 (fr) 1991-12-20
DE69103223D1 (de) 1994-09-08
JPH05279936A (ja) 1993-10-26
DE69103223T2 (de) 1995-03-09
US5131436A (en) 1992-07-21
EP0462035B1 (de) 1994-08-03
FR2663347B1 (de) 1993-02-26

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