EP1191137B1 - Accouplement pour la connexion rotative des arbres d'entraînement des ratières et des métiers à tisser - Google Patents

Accouplement pour la connexion rotative des arbres d'entraînement des ratières et des métiers à tisser Download PDF

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Publication number
EP1191137B1
EP1191137B1 EP01203449A EP01203449A EP1191137B1 EP 1191137 B1 EP1191137 B1 EP 1191137B1 EP 01203449 A EP01203449 A EP 01203449A EP 01203449 A EP01203449 A EP 01203449A EP 1191137 B1 EP1191137 B1 EP 1191137B1
Authority
EP
European Patent Office
Prior art keywords
disk
clutch element
shaft
coupling according
integral
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
EP01203449A
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German (de)
English (en)
Other versions
EP1191137A3 (fr
EP1191137A2 (fr
Inventor
Erminio Depoli
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.)
Baruffaldi SpA
Original Assignee
Baruffaldi SpA
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Publication date
Application filed by Baruffaldi SpA filed Critical Baruffaldi SpA
Publication of EP1191137A2 publication Critical patent/EP1191137A2/fr
Publication of EP1191137A3 publication Critical patent/EP1191137A3/fr
Application granted granted Critical
Publication of EP1191137B1 publication Critical patent/EP1191137B1/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
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/02—General arrangements of driving mechanism

Definitions

  • the present invention relates to a coupling for rotationally connecting actuating shafts of weave machines and weaving looms. It is known in the technical sector relating to the manufacture of weaving looms that said looms must be provided with members for conveying the yarn(s) forming the weft and members for moving the yarns forming the warp.
  • Said members for conveying the weft yarns may be of different types, including those of the so-called gripper type.
  • the members for moving the warp yarns are instead called weave machines and may be of the Jacquard or dobby type; these machines, particularly in the case of gripper looms, must be actuated in synchronism with the members for conveying the weft yarns, in order to form the intended weave design.
  • EP 0,877,111 in the name of the same proprietor discloses, for example, a coupling for connecting actuating shafts of weave machines and weaving looms, comprising at least one clutch element integral with the said shaft of the weave machine and a clutch part integral with the shaft of the weaving loom, said clutch part comprising a disk movable coaxially, owing to the thrusting action of associated means, for engagement with said clutch element integral with the shaft of the weave machine, said disk being integral with a resilient ring coaxially constrained to the shaft of the weaving loom, there also being provided means for recalling said disk in the axial direction in order to cause disengagement thereof from the clutch element integral with the shaft of the weave machine.
  • the loom, and therefore the grippers may stop in any position which is not predetermined and not in synchronism with the drive shaft, which may give rise to serious problems should the position of the grippers still be within the warp.
  • the technical problem which is posed, therefore, is that of providing a coupling for weaving looms which, upon stoppage of the motor, ensures safe and reliable corresponding stoppage of the driven shaft of the loom in predetermined angular positions and that of ensuring that this position is maintained with certainty during the whole of the shed-locating step until correct synchronism with the drive shaft has been restored.
  • the coupling should consist of a small number of parts which can be easily assembled so that it has a low weight, low cost and reduced maintenance requirements.
  • the coupling according to the invention is fitted to weaving looms schematically shown with a gripper loom part 2000 and a weave machine part 1000 (for the sake of simplicity referred to below as “dobby") which are respectively connected to a driven shaft 2001 and to a drive shaft 1001 of a single actuating motor M, which must be suitably rotationally connected together (Fig. 1) or disengaged (Fig. 3) depending on the operational requirements described below.
  • connection between the two shafts 1001 and 2001 is performed by means of a coupling 20 according to the invention which is arranged between them and which comprises a toothed wheel 21 integral with the shaft 1001 of the weave machine 1000 and an electromagnet actuating assembly integral with the shaft 2001 of the weaving loom 2000.
  • the toothed wheel 21 has a first set of front teeth 21b able to mesh with corresponding set of front teeth 11b of a disk 11 of the clutch part 10 integral with the shaft 2001.
  • said disk 11 is integrally joined to a resilient ring 12 in turn constrained to the shaft 2001 by means of screws 12a or the like; in this way said ring, which is resilient in the axial direction, but rigid in the radial and circumferential direction, is able to transmit to the disk 11 the torque produced by the rotation of the shaft 2001 and at the same time allow the displacement of the disk itself in the axial direction, owing to the thrusting action of springs 13 housed in associated seats 14a of a spring carrier 14 keyed onto the shaft 2001.
  • Said clutch assembly 10 also comprises an actuating element for recalling the disk 11 in the axial direction, said element in the example of Fig. 1 consisting of a fixed annular electromagnet 15 which is integral with a fixed support part 15a and the magnetic field of which acts by attracting the clutch disk 11 towards the shaft 2001.
  • the attraction exerted by the electromagnet opposes the thrusting action of the springs 13 arranged between the shaft 2001 and the disk 11; in this way, when the electromagnet 15 is excited, it keeps, in the disengaged condition, the front teeth 21b and 11b of the wheel 21 and the disk 11, respectively, allowing the independent rotation of the shafts 1001 and 2001.
  • the ring 11 is also provided with a second set of front teeth 11a located opposite the first set and able to engage with a corresponding set of front teeth 15d of the electromagnetic actuating assembly 15.
  • the ring 11 is also equipped with lugs 11c which are arranged in asymmetrical positions and are able to combine with corresponding holes 21c in the wheel 21 into which they are inserted, when the respective sets of front teeth 11b and 21b are engaged, thus ensuring a precise relative angular coupling position of the shaft 1001 and the shaft 2001.
  • the positions of said lugs 11c and the corresponding holes 21c are asymmetrical so as to allow the relative engagement between wheel 21 and ring 11 with insertion of the lugs 11c in the holes 21c, in a specific angular position, while in any other position the lugs rest against the surface of the disk 11 so as to keep the latter constantly perpendicular to the axis of the shafts 1001 and 2001.
  • said angular synchronism may also be obtained by means of a suitable configuration of the two sets of front teeth 11b and 21b for the driving part and 11d, 15d for the driven part.
  • the electromagnetic clutch 10 allows, in the non-excited condition, the rotational connection of the shaft 1001 of the motor M and the dobby 1000 to the shaft 2001 of the loom, while, when excited, it must disengage the rotation of one shaft from the other; in this way the synchronised connection between the loom and the dobby is maintained also when there is no power.
  • the synchronism may be achieved by means of an angular control system of the electronic type consisting for example of an encoder coaxial with the shaft 1001.
  • the front teeth 11d and 15d of the disk 11 and of the fixed part 15a of the electromagnet may be replaced by several simple elements such as, for example, pins and holes (not shown) which may also be machined with greater tolerances compared to the teeth, thus making it possible to increase the speed of engagement and achieve a substantial reduction in machining costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (13)

  1. Accouplement pour la connexion rotative des arbres d'entraînement (1001 ; 2001) des ratières (1000) et des métiers à tisser (2000), comprenant au moins un premier élément d'embrayage (21) solidaire dudit arbre (1001) de la ratière (1000) et un second élément d'embrayage (10) solidaire de l'arbre (2001) du métier à tisser (2000), ledit second élément d'embrayage (10) comprenant un disque (11) mobile coaxialement, en raison de l'action de poussée des moyens associés (13), pour un engagement avec ledit premier élément d'embrayage (21) solidaire de l'arbre (1001) de la ratière, il est également pourvu de moyens fixes (15 ; 15a) pour rappeler ledit disque (11) dans la direction axiale afin d'entraîner son désengagement du premier élément d'embrayage (21) solidaire de l'arbre de la ratière (1000), ledit disque (11) présente des premiers moyens (11b) et des seconds moyens (11d) respectivement, pour un engagement avec des moyens correspondants (21 b) du premier élément d'embrayage (21) et avec des moyens d'engagement (15d) des moyens fixes (15, 15a),
    caractérisé en ce que l'extension, dans la direction axiale, des premiers moyens (11b) et des seconds moyens (11d) pour un engagement du disque (11) avec les moyens d'engagement du premier élément d'embrayage et des moyens fixes est tel qu'elle maintient le disque en engagement avec les moyens d'engagement et les moyens fixes jusqu'à ce que le disque lui-même soit complètement désengagé de l'un ou de l'autre des moyens d'engagement du premier élément d'embrayage et des moyens fixes.
  2. Accouplement selon la revendication 1, caractérisé en ce que ledit premier élément d'embrayage solidaire de l'arbre de la ratière est constitué d'une roue dentée (21).
  3. Accouplement selon la revendication 2, caractérisé en ce que lesdits premiers moyens d'engagement du premier élément d'embrayage (21) sont constitués d'un ensemble de dents avant (21 b) se trouvant sur ladite roue dentée (21).
  4. Accouplement selon la revendication 3, caractérisé en ce que lesdits premiers moyens d'engagement du disque (11) sont constitués d'un ensemble de dents avant (11 b) capables de s'engréner avec l'ensemble correspondant de dents avant (21 b) de la roue dentée (21).
  5. Accouplement selon la revendication 1, caractérisé en ce que lesdits seconds moyens d'engagement du disque (11) sont constitués d'un ensemble de dents avant (11 d).
  6. Accouplement selon la revendication 5, caractérisé en ce que lesdits moyens d'engagement correspondants des moyens fixes (15, 15a) servant à rappeler le disque (11) sont constitués d'un ensemble de dents avant fixes (15d).
  7. Accouplement selon la revendication 1, caractérisé en ce que lesdits seconds moyens d'engagement du disque (11) sont constitués d'une pluralité de broches s'étendant vers l'extérieur parallèles à la direction axiale.
  8. Accouplement selon la revendication 7, caractérisé en ce que lesdits moyens d'engagement des moyens fixes (15, 15a) pour rappeler le disque (11) sont constitués d'une pluralité de trous.
  9. Accouplement selon la revendication 1, caractérisé en ce que ledit disque (11) est solidaire d'une bague élastique (12) contrainte coaxialement à l'arbre (2001) du métier à tisser (2000).
  10. Accouplement selon la revendication 9, caractérisé en ce que ladite bague (12) est élastique dans la direction axiale et rigide dans la direction radiale et circonférentielle.
  11. Accouplement selon la revendication 1, caractérisé en ce que lesdits moyens pour pousser le disque (11) sont des moyens élastiques (13).
  12. Accouplement selon la revendication 11, caractérisé en ce que lesdits moyens élastiques sont des ressorts (13) logés dans des embases correspondantes (14a) d'un support de ressort (14) solidaire de l'arbre (2001) de la machine (2000).
  13. Accouplement selon la revendication 1, caractérisé en ce que lesdits moyens fixes (15, 15a) pour rappeler le disque (11) sont constitués d'un électroaimant annulaire coaxial (15) fixé au métier à tisser (2000).
EP01203449A 2000-09-26 2001-09-12 Accouplement pour la connexion rotative des arbres d'entraînement des ratières et des métiers à tisser Expired - Lifetime EP1191137B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MI002089A IT1318931B1 (it) 2000-09-26 2000-09-26 Giunto per l'accoppiamento in rotazione di alberi di azionamento dimacchine di armatura e telai di macchine tessili.
ITMI002089 2000-09-26

Publications (3)

Publication Number Publication Date
EP1191137A2 EP1191137A2 (fr) 2002-03-27
EP1191137A3 EP1191137A3 (fr) 2003-04-16
EP1191137B1 true EP1191137B1 (fr) 2006-11-15

Family

ID=11445859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01203449A Expired - Lifetime EP1191137B1 (fr) 2000-09-26 2001-09-12 Accouplement pour la connexion rotative des arbres d'entraînement des ratières et des métiers à tisser

Country Status (7)

Country Link
EP (1) EP1191137B1 (fr)
JP (1) JP4261094B2 (fr)
CN (1) CN1287027C (fr)
AT (1) ATE345412T1 (fr)
CZ (1) CZ297953B6 (fr)
DE (1) DE60124478T2 (fr)
IT (1) IT1318931B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1804175B (zh) * 2005-12-15 2011-03-16 增城市柏迪创展有限公司 一种织机传动机构及其控制系统
IT1397372B1 (it) * 2009-12-30 2013-01-10 Promatech Spa Unita' di comando per telai tessili ad elevata flessibilita' di uso, munita di dispositivo di controllo di sicurezza rispetto a possibili sfasamenti critici degli organi meccanici mobili e procedimento di tessitura che utilizza tale unita'
DE102010026942B4 (de) 2010-07-12 2016-02-18 Maschinenfabrik Mönninghoff Gmbh & Co. Kg Schaltkupplung
CN106704406B (zh) * 2017-01-24 2023-07-14 宁波新卫界高科洁具有限公司 电磁离合器
CN111326899A (zh) * 2020-02-29 2020-06-23 嘉兴星河织造有限公司 一种纺织机用的连接机构
CN115095611A (zh) * 2022-07-19 2022-09-23 精进电动科技股份有限公司 一种单稳态电磁离合器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520762A1 (fr) * 1982-01-29 1983-08-05 Staubli Sa Ets Perfectionnements aux dispositifs pour la recherche du pas associes aux ratieres et autres mecaniques de tissage
IT1223621B (it) * 1987-12-30 1990-09-29 Baruffaldi Spa Giunto a doppio innesto, particolarmente per telai da tessitura
BE1004896A3 (nl) * 1991-05-23 1993-02-16 Picanol Nv Werkwijze en inrichting voor het aandrijven van een weefmachine gedurende de traagloop.
IT1291311B1 (it) * 1997-05-06 1999-01-07 Baruffaldi Spa Giunto per l'accoppiamento in rotazione di alberi di azionamento di macchine di armatura e telai di macchine utensili

Also Published As

Publication number Publication date
CN1287027C (zh) 2006-11-29
ITMI20002089A1 (it) 2002-03-26
EP1191137A3 (fr) 2003-04-16
CZ20013444A3 (cs) 2002-05-15
JP4261094B2 (ja) 2009-04-30
DE60124478T2 (de) 2007-06-21
ITMI20002089A0 (it) 2000-09-26
EP1191137A2 (fr) 2002-03-27
ATE345412T1 (de) 2006-12-15
JP2002173853A (ja) 2002-06-21
CN1346908A (zh) 2002-05-01
DE60124478D1 (de) 2006-12-28
IT1318931B1 (it) 2003-09-19
CZ297953B6 (cs) 2007-05-09

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