EP0086999B1 - Dispositif pour la recherche du pas de la mécanique d'armature dans le métier à tisser - Google Patents

Dispositif pour la recherche du pas de la mécanique d'armature dans le métier à tisser Download PDF

Info

Publication number
EP0086999B1
EP0086999B1 EP83100863A EP83100863A EP0086999B1 EP 0086999 B1 EP0086999 B1 EP 0086999B1 EP 83100863 A EP83100863 A EP 83100863A EP 83100863 A EP83100863 A EP 83100863A EP 0086999 B1 EP0086999 B1 EP 0086999B1
Authority
EP
European Patent Office
Prior art keywords
clutch
loom
auxiliary motor
gearwheel
clutches
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
Application number
EP83100863A
Other languages
German (de)
English (en)
Other versions
EP0086999A1 (fr
Inventor
Gianluigi Cremonesi
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.)
Fimtessile Fabbrica Italiana Macchinario Tessile SpA
Original Assignee
Fimtessile Fabbrica Italiana Macchinario Tessile SpA
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 Fimtessile Fabbrica Italiana Macchinario Tessile SpA filed Critical Fimtessile Fabbrica Italiana Macchinario Tessile SpA
Priority to AT83100863T priority Critical patent/ATE19414T1/de
Publication of EP0086999A1 publication Critical patent/EP0086999A1/fr
Application granted granted Critical
Publication of EP0086999B1 publication Critical patent/EP0086999B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/146—Independent drive motor
    • 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 improved means for synchronizing shedding devices - as dobbies, Jacquard and the like - with looms.
  • shedding devices have to be connected to looms with perfect synchronism and when, during working of the loom, inconveniences arise-such as, breaking of the weft or warp yarns, reading mistakes, and other drawbacks or faults - both the loom and the shedding device have to be stopped, while the synchronism between them has to be restored.
  • the shedding device in order to eliminate the fault, it is usually necessary for the shedding device to repeat an already performed operation, which means that it has to turn backward by one or more revolutions, while the loom is stationary, after which the proper phase between the loom and the shedding device has to be restored.
  • means are used - interposed between the loom and the shedding device - for synchronizing the shedding device with the loom, of the type comprising a unit containing two axially aligned dog clutches and an auxiliary motor being connectable to the shedding device through the first clutch, after the drive between the loom and the-shedding device has been interrupted through the second clutch (DE-B-2 602 512).
  • the object of the present invention is therefore to supply synchronization means of the aforementioned type, but with simplified features and thus very efficient and safe.
  • the invention proposes to make these means with a more compact structure and a more rational arrangement of its parts, thereby also reducing dimensions and vibrations, with the advanage of making it most convenient in use, as well as improving still further its efficiency and safety.
  • the means according to the invention for synchronizing a shedding device with a loom - of the type heretofore specified, comprising a unit containing two axially aligned dog clutches and an auxiliary motor being connectable to the shedding device through the first clutch, after the drive between the loom and the shedding device has been interrupted through the second clutch - are characterized in that, the two clutches are controlled by a gearwheel with face cams, mounted coaxially and freely rotating on, but bound to the axial movement of one of the meshing elements of the first clutch, the gearwheel and the meshing element being caused to rotate by the auxiliary motor and being axially movable together in one direction, through cooperation of the face cams with stationary cam-followers to engage the first clutch, thereby connecting the auxiliary motor to the shedding device and simultaneously disengaging the second clutch thereby disconnecting the loom, and in the other direction by the action of a return spring, thereby disengaging the first clutch, engaging the second clutch and switching-off the motor.
  • the synchronization means associated to an auxiliary motor 1, comprise a train of gearwheels 2, 3, 4, 5, 6 and 7, acting as reduction gears, the first of said gearwheels being driven by the motor 1, and a double- clutch unit 10, controlled by gearwheels 8 and 9 meshing with the gearwheels 6 and 7 respectively, of said train of gearwheels.
  • All these members - with the exception of the motor 1, which is external - are mounted inside a stout casing 11, into which penetrates the sleeve 12 which transmits the motion from the loom, and from which projects the shaft 13 - coaxial to the sleeve 12 - which controls the shedding device.
  • the gearwheels 8 and 9 are mounted freely rotatable about the main axis a of the clutch unit 10-common to the sleeve 12 and to the shaft 13 - and slidable along said axis.
  • the unit 10 comprises: a clutch 14, controlled by the sleeve 12 and formed by a clutch element 14', fixedly connected to said sleeve 12, and by a clutch element 14", mounted slidable but not rotatable on a tube 15 fixed to the shaft 13; a clutch 16, controlled by the gearwheels 8 and 9 and formed by a clutch element 16', forming a single piece with the gearwheel 8, and by a clutch element 16", mounted slidable but not rotatable on the tube 15 fixed to the shaft 13, a spring 17 being interposed between said elements 14" of the clutch 14 and 16" of the clutch 16, which spring acts along the axis of the shaft 13; and a pair of rollers 18, with which cooperate front cams 9' and 9" of the gearwheel 9.
  • the unit 10 also comprises a control member 19, which stops the rotation of the motor 1 and the feeler 19' of which is controlled by the gearwheel 8, and an elastic support element 20, interposed between the element 16" of the clutch 16 and the casing 11.
  • clutch elements 14' and 14" comprise mutually meshing teeth, positioned at different reciprocal distances, as shown in Fig. 7 for the element 14', so that their engagement for operating the clutch 14 can only take place in a single and very precise position.
  • the motor 1 causes the rotation of the two gearwheels 8 and 9 through the train of gearwheels 2, 3, 4, 5, 6 and 7; while rotating, the gearwheel 9 engages with its cams 9' and 9" the two rollers 18; the gearwheels 8 and 9 are then axially shifted together towards the right of Figs. 2 to 6; the clutch 14 is consequently disengaged, the element 14" disengaging from the element 14', while the clutch 16 engages, the element 16' thereof engaging the element 16".
  • the motor 1 causes the rotation of the two gearwheels 8 and 9 through the train of gearwheels 2, 3, 4, 5, 6 and 7; while rotating, the gearwheel 9 engages with its cams 9' and 9" the two rollers 18; the gearwheels 8 and 9 are then axially shifted together towards the right of Figs. 2 to 6; the clutch 14 is consequently disengaged, the element 14" disengaging from the element 14', while the clutch 16 engages, the element 16' thereof engaging the element 16".
  • the shaft 13 is no longer connected to the loom and it is instead connected to the motor 1, which thus operates the shedding device while the loom is stationary.
  • the profiles of cams 9' and 9" are such as to keep the clutch 16 engaged only through a limited rotation angle of the shaft 13, inferior to one turn; subsequently, the clutch 16 still remains engaged, as the teeth of elements 14' and 14" of the clutch 14 - owing to the different reciprocal angular distances - are not in an engaged position but bear the ones against the others (as shown in Fig. 5) and the action of the spring 17, which urges the gearwheels 8 and 9 toward the left of Fig. 2, is therefore ineffective.
  • the device has thus created the conditions for a synchronization of the shedding device with the loom and for starting again the regular running of said device.
  • This synchronization is guaranteed by the only possible position of reciprocal engagement of the two elements 14' and 14" of the clutch 14, which position in turn derives from the difference of the angular distances between the teeth of mutual engagement of the two clutch elements. It should be noted that this difference allows also a reciprocal bearing contact between said elements onto a particularly broad surface and in correspondence of at least two different areas, thereby reducing the contact pressure and making the engagement more steady.
  • gearwheels 8 and 9 are indispensable for the cams 9' and 9" not to coincide again with the rollers 18 upon engagement of the clutch 14: for this purpose, the gearwheels 8 and 9 have different speeds (one deriving the motion from the gearwheel 6, the other from the gearwheel 7 of different diameter, whereby, in the case illustrated, the speed of the gearwheel 9 is higher).
  • the presence of the elastic element 20 for engagement of the clutch element 16" provides the double advantage of deadening the blows causes by the clutches and of facilitating - by elastic compression - the engagement of such clutches when the addendums of the opposite teeth of their elements hit each other.
  • Fig. 6 illustrates a modified embodiment of the invention.
  • the gearwheels 8 and 9 are here caused to rotate by a single gearwheel 6', from which the gearwheel 9 is disengaged when finding itself in the original position, to the left of the device in Fig. 6.
  • Two supplementary gearwheels 21 and 22 of different diameter are besides provided, freely rotating on a pin 23 and with their teeth meshing with the gearwheels 8 and 9.
  • the gearwheel 9 is thus caused to rotate by the gearwheel 8 through gearwheels 21 and 22.
  • the same figure illustrates pistons 24 and 25 which, under the action of springs 26 and 27, keep the gearwheel 9 bearing against the stop 28.

Landscapes

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

Claims (5)

1. Moyen pour synchroniser un dispositif de formation du pas et un métier à tisser, du type comprenant un appareil (10) contenant deux embrayages à griffes alignés axialement (16, 14) et un moteur auxiliaire (1) pouvant être relié au dispositif de formation du pas par le premier embrayage (16), après que la transmission entre le métier à tisser et le dispositif de formation du pas ait été interrompue par le second embrayage (14), caractérisé en ce que les deux embrayages (16, 14) sont commandés par une roue d'engrenage (9) à cames en tête (9', 9"), en position coaxiale et tournant librement, mais limitée au mouvement axial d'un d'un des éléments d'engrenage (16') du premier embrayage (16), la roue d'engrenage (9) et l'élément d'engrenage (16') étant mis en rotation par le moteur auxiliaire (1) et étant axialement mobiles en même temps dans une direction, avec le concours des cames en tête (9', 9") et des galets de poussoir fixes pour embrayer le premier embrayage (16), mettant ainsi en communication le moteur auxiliaire (1) et le dispositif de formation du pas et débrayant simultanément le second embrayage (14) désaccouplant de ce fait le métier à tisser, et dans l'autre direction par l'action d'un ressort de rappel (17), débrayant alors le premier embrayage (16), embrayant le second embrayage (14) et arrêtant le moteur (1).
2. Moyen selon la revendication 1, dans lequel ladite roue d'engrenage (9) et ledit élément d'engrenage (16') dudit premier embrayage (16) sont engrenés avec les roues d'engrenage (7, 6) de diamètre différent, mis en rotation par le moteur auxiliaire (1).
3. Moyen selon la revendication 1, dans lequel ledit élément d'engrenage (16') est commandé par le moteur auxiliaire (1 et ladite roue d'engrenage (9) et ledit élément d'engrenage (16') sont engrenés avec des roues tournant librement (21, 22) unies dans leur rotation.
4. Moyen selon les revendications 1 à 3, dans lequel ledit premier embrayage (16) a un second élément d'engrenage (16"), soutenant d'un côté ledit ressort de rappel (17) et s'appuyant de l'autre côté sur la caisse de l'appareil (10) par un élément élastique (20).
5. Moyen selon les revendications 1 à 4, comprenant un tâteur (19'), directement commandé par ledit élément d'engrenage (16') dudit embrayage (16), et un moyen de contrôle (19) relié audit tâteur (19') pour arrêter le moteur auxiliaire (1).
EP83100863A 1982-02-09 1983-01-31 Dispositif pour la recherche du pas de la mécanique d'armature dans le métier à tisser Expired EP0086999B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100863T ATE19414T1 (de) 1982-02-09 1983-01-31 Vorrichtung zum synchronisieren einer fachbildemaschine mit einer webmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1953182 1982-02-09
IT19531/82A IT1149570B (it) 1982-02-09 1982-02-09 Dispositivo perfezionato per la ricerca del passo delle macchine di armatura in telai di tessitura

Publications (2)

Publication Number Publication Date
EP0086999A1 EP0086999A1 (fr) 1983-08-31
EP0086999B1 true EP0086999B1 (fr) 1986-04-23

Family

ID=11158821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100863A Expired EP0086999B1 (fr) 1982-02-09 1983-01-31 Dispositif pour la recherche du pas de la mécanique d'armature dans le métier à tisser

Country Status (4)

Country Link
EP (1) EP0086999B1 (fr)
AT (1) ATE19414T1 (fr)
DE (1) DE3363129D1 (fr)
IT (1) IT1149570B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE899346A (nl) * 1984-04-06 1984-10-08 Picanol Nv Schotzoekinrichting voor weefgetouwen.
IT1223621B (it) * 1987-12-30 1990-09-29 Baruffaldi Spa Giunto a doppio innesto, particolarmente per telai da tessitura
JP2924095B2 (ja) * 1990-06-04 1999-07-26 株式会社豊田自動織機製作所 電子ドビー開口装置を備えた織機の運転方法
DE112016000889T5 (de) 2015-02-24 2017-11-02 American Axle & Manufacturing, Inc. Fahrzeug-Antriebsstrangkomponente mit einem Betätigungssystem für die Antriebsstrangtrennung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1390377A (en) * 1971-05-07 1975-04-09 Nuovo Pignone Spa Looms
DE2509665A1 (de) * 1975-03-06 1976-09-09 Lentz Textilmaschinen Gmbh Webmaschine mit einer fachbildeeinrichtung, insbesondere schaftmaschine oder jacquardmaschine
CH612224A5 (en) * 1976-01-14 1979-07-13 Sulzer Ag Disengageable claw coupling for weaving machines

Also Published As

Publication number Publication date
EP0086999A1 (fr) 1983-08-31
IT1149570B (it) 1986-12-03
DE3363129D1 (en) 1986-05-28
IT8219531A0 (it) 1982-02-09
ATE19414T1 (de) 1986-05-15

Similar Documents

Publication Publication Date Title
EP0086999B1 (fr) Dispositif pour la recherche du pas de la mécanique d'armature dans le métier à tisser
US7857011B2 (en) Drive for a web machine
JP6974445B2 (ja) 機織り機用制御システムと深層学習方法
US4244399A (en) Shed locating device for dobbies
EP1245707B1 (fr) Embrayage multiposition avec système de blocage de l'élément mobile dans un dispositif d'entraînement de métier à tisser
US2639732A (en) Weaving machinery and control
GB2086439A (en) Shuttleless weaving machine
US3237648A (en) Weaving machine
US3208169A (en) Reversible motor controlled ironing machine
EP1600542A2 (fr) Dispositif de commande de métiers à tisser
EP0877111B1 (fr) Accouplement pour la connexion rotative des arbres d'entraínement des ratières et des métiers à tisser
EP0768402B1 (fr) Dispositif pour programmer les ratières rotatives dans les métiers à tisser
EP0485009B1 (fr) Dispositif de commande d'une ratière rotative pour métier à tisser, comprenant un levier à came et des butées associées
EP0882824B1 (fr) Mécanisme pour sélectionner la marche lente et pour retrouver la trame dans les métiers à tisser
US4298031A (en) Shed forming device for looms
US1791176A (en) Driving and stopping mechanism
US4541458A (en) Electromechanical control means for controlling movement sequences in a textile machine
US1081384A (en) Loom for weaving bags, &c.
ITMI960657A1 (it) Dispositivo per attuare la programmazione di ratiere rotative in macchine di tessitura.
US2723686A (en) Safety conveyor drive
US4766936A (en) Card switching apparatus for dobby
ES460265A1 (es) Perfeccionamientos en los mecanismos de accionamiento auto- matico del dispositivo de busqueda del paso en telares tex- tiles.
ITMI20092337A1 (it) 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'
US3083739A (en) Drive mechanism, particularly for picking system for looms
US6895786B2 (en) Control device for textile machines, in particular for crochet machines

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19840220

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB LI LU NL SE

REF Corresponds to:

Ref document number: 19414

Country of ref document: AT

Date of ref document: 19860515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3363129

Country of ref document: DE

Date of ref document: 19860528

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890131

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910109

Year of fee payment: 9

Ref country code: CH

Payment date: 19910109

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910117

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910118

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910121

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910123

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910129

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910328

Year of fee payment: 9

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920131

Ref country code: LI

Effective date: 19920131

Ref country code: GB

Effective date: 19920131

Ref country code: CH

Effective date: 19920131

Ref country code: BE

Effective date: 19920131

Ref country code: AT

Effective date: 19920131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

BERE Be: lapsed

Owner name: FIMTESSILE FABBRICA ITALIANA MACCHINARIO TESSILE

Effective date: 19920131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83100863.6

Effective date: 19920904