EP1191137B1 - Coupling for rotationally connecting actuating shafts of weave machines and weaving looms - Google Patents
Coupling for rotationally connecting actuating shafts of weave machines and weaving looms Download PDFInfo
- 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
Links
Images
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)
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 (en) | 2002-03-27 |
EP1191137A3 EP1191137A3 (en) | 2003-04-16 |
EP1191137B1 true EP1191137B1 (en) | 2006-11-15 |
Family
ID=11445859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01203449A Expired - Lifetime EP1191137B1 (en) | 2000-09-26 | 2001-09-12 | Coupling for rotationally connecting actuating shafts of weave machines and weaving looms |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1191137B1 (it) |
JP (1) | JP4261094B2 (it) |
CN (1) | CN1287027C (it) |
AT (1) | ATE345412T1 (it) |
CZ (1) | CZ297953B6 (it) |
DE (1) | DE60124478T2 (it) |
IT (1) | IT1318931B1 (it) |
Families Citing this family (6)
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)
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 |
-
2000
- 2000-09-26 IT IT2000MI002089A patent/IT1318931B1/it active
-
2001
- 2001-09-12 DE DE60124478T patent/DE60124478T2/de not_active Expired - Fee Related
- 2001-09-12 EP EP01203449A patent/EP1191137B1/en not_active Expired - Lifetime
- 2001-09-12 AT AT01203449T patent/ATE345412T1/de not_active IP Right Cessation
- 2001-09-25 CZ CZ20013444A patent/CZ297953B6/cs not_active IP Right Cessation
- 2001-09-26 JP JP2001293008A patent/JP4261094B2/ja not_active Expired - Fee Related
- 2001-09-26 CN CN01140964.9A patent/CN1287027C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1287027C (zh) | 2006-11-29 |
ITMI20002089A1 (it) | 2002-03-26 |
EP1191137A3 (en) | 2003-04-16 |
CZ20013444A3 (cs) | 2002-05-15 |
JP4261094B2 (ja) | 2009-04-30 |
DE60124478T2 (de) | 2007-06-21 |
ITMI20002089A0 (it) | 2000-09-26 |
EP1191137A2 (en) | 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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