EP0736622B1 - Driving system for shedding mechanisms on looms - Google Patents
Driving system for shedding mechanisms on looms Download PDFInfo
- Publication number
- EP0736622B1 EP0736622B1 EP96420110A EP96420110A EP0736622B1 EP 0736622 B1 EP0736622 B1 EP 0736622B1 EP 96420110 A EP96420110 A EP 96420110A EP 96420110 A EP96420110 A EP 96420110A EP 0736622 B1 EP0736622 B1 EP 0736622B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- shaft
- independent motor
- mechanics
- looms
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/24—Features common to jacquards of different types
- D03C3/32—Jacquard driving mechanisms
-
- 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 mechanics for the formation of crowd on the looms, and it aims more particularly (because it is in this case that its application seems to present the most interest), but not exclusively, those of the Jacquard type.
- document FR-A-2 660 672 proposed to directly drive the input shaft of the mechanical using an independent motor, associated on the one hand with two encoders cooperating respectively with the aforementioned shaft and the main shaft of the trade, on the other hand to an electronic variator arranged for power the independent motor in synchronization with that of the trade based on information received from the above coders.
- the present invention has set goals of reducing energy consumption, getting a perfect synchronization between mechanical and loom, to remove mandatory use of high definition coders and decrease the cost of the whole.
- the training system according to the invention is defined in the claim 1
- the mechanical input shaft is actuated on the one hand by an independent motor with variable torque controlled, not enslaved to the main tree of the trade, on the other hand by a tree of synchronization linked to the aforementioned main tree.
- the torque control of the independent motor is operated at using an electronic variator associated with a computer arranged to properly process the information received from the controller mechanical control.
- This calculator determines at all times the torque as a function of the elastic imbalances detected by the controller.
- reference 1 designates the input shaft which provides the drive Jacquard mechanics shown schematically in 2.
- This mechanics 2 is equipped with an encoder 3 which detects the angular position of tree 1 and which sends the corresponding information 4 to the controller 5 which operates the electronic reading of the armor program introduced in said controller, in order to send the armor information 6 to the mechanics 2.
- the controller 5 sends angular position information 7 and armor information 8 to a computer 9 whose arrangement functional was illustrated in fig. 2.
- Information 13 (imbalance torque), 14 (inertia torque) and 15 (constant pairs) respectively emitted by modules 10, 11 and 12 of the computer 9 are sent to an electronic adder 16 at level at which they are tabulated to define information 17 corresponding to the resulting torque.
- This information 17 is sent to the variator 18 of an independent motor 19 (fig. 1) equipped with an automatic brake 19 ', which motor 19 drives the input shaft 1 of the mechanism 2.
- the shaft 1 is provided with a conical couple 20 ensuring its connection with a vertical synchronization shaft 21, the base of which is itself connected by another conical couple 22 to the main shaft 23 which ensures loom training 24.
- the input shaft 1 of the mechanics 2 is consequently driven by two separate motor sources 19 and 23, the respective values of couples exerted on said shaft 1 by these two sources varying at all moment depending on the resulting torque 17.
- Fig. 4 shows in gray the part of the torque provided by the motor 19, clearly the small part of the torque transmitted by the shaft of synchronization 21.
- system according to the invention is capable of being applied to the mechanics of the dobby kind by incorporation an appropriate controller.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Control Of Multiple Motors (AREA)
Description
La présente invention a trait aux mécaniques pour la formation de la foule sur les métiers à tisser, et elle vise plus particulièrement (car c'est dans ce cas que son application semble présenter le plus d'intérêt), mais non exclusivement, celles du type Jacquard.The present invention relates to mechanics for the formation of crowd on the looms, and it aims more particularly (because it is in this case that its application seems to present the most interest), but not exclusively, those of the Jacquard type.
On sait que traditionnellement, les mécaniques de ce type sont entraínées à partir du métier à tisser auquel elles sont associées ; en fait, l'arbre d'entrée de la mécanique est relié à l'arbre principal du métier par un arbre vertical de transmission et deux renvois d'angle (couples coniques). Cet agencement classique implique l'obligation d'équiper le métier d'un moteur très puissant associé à un embrayage et à un frein automatique eux-mêmes prévus à forte puissance ; l'arbre de transmission doit être fortement dimensionné, si bien que le coût total du système d'entraínement est élevé.We know that traditionally, mechanics of this type are trained from the weaving loom with which they are associated; in fact, the mechanical input shaft is connected to the main loom of the loom by a vertical drive shaft and two bevel gearboxes (couples conical). This classic arrangement implies the obligation to equip the profession of a very powerful engine associated with a clutch and a brake automatic themselves provided at high power; the drive shaft must be heavily dimensioned so that the total cost of the system is high.
Dans le but de remédier à cet inconvénient, le document FR-A-2 660 672 (STAUBLI) proposait d'entraíner directement l'arbre d'entrée de la mécanique à l'aide d'un moteur indépendant, associé d'une part à deux codeurs coopérant respectivement avec l'arbre précité et l'arbre principal du métier, d'autre part à un variateur électronique agencé pour alimenter le moteur indépendant en synchronisation avec celui du métier en fonction des informations reçues des codeurs susmentionnés.In order to remedy this drawback, document FR-A-2 660 672 (STAUBLI) proposed to directly drive the input shaft of the mechanical using an independent motor, associated on the one hand with two encoders cooperating respectively with the aforementioned shaft and the main shaft of the trade, on the other hand to an electronic variator arranged for power the independent motor in synchronization with that of the trade based on information received from the above coders.
En dépit des performances obtenues, un tel système à moteur indépendant asservi n'a pas donné entière satisfaction. Effectivement, la consommation en énergie est élevée et par ailleurs l'on se heurte à de sérieuses difficultés pour obtenir une synchronisation parfaite entre le métier et la mécanique. Cette synchronisation nécessite le recours à des codeurs à haute définition, donc coûteux et délicats. Si l'on ajoute à ce qui précède le surdimensionnement indispensable du moteur indépendant, le coût de l'ensemble du système reste élevé.Despite the performance obtained, such an independent motor system enslaved was not entirely satisfactory. Indeed, consumption energy is high and moreover we run into serious difficulties in obtaining perfect synchronization between the trade and the mecanic. This synchronization requires the use of coders with high definition, therefore expensive and delicate. If we add to what precedes the essential oversizing of the independent motor, the cost of the whole system remains high.
Avant d'exposer la solution proposée par la présente invention pour l'entraínement rationnel des mécaniques de tissage, on rappelera que les mécaniques Jacquard actuelles sont le plus souvent à lisage électronique et incorporent de ce fait un contrôleur de pilotage. Ce contrôleur possède une mémoire dans laquelle est stockée l'armure désirée pour le tissage et, recevant les informations de position de la mécanique, il pilote le lisage de cette dernière à chaque duite, pour contrôler les mouvements de monte et baisse de chacune des lisses du harnais.Before explaining the solution proposed by the present invention for the rational training of the weaving mechanics, it will be recalled that the current Jacquard machines are most often electronically readable and thereby incorporate a pilot controller. This controller has a memory in which the desired armor is stored for the weaving and, receiving the position information from the mechanics, it controls the reading of the latter with each pick, to control the up and down movements of each of the beams of the harness.
Cela ayant été exposé, on indiquera que la présente invention s'est fixée pour buts de réduire la consommation d'énergie, d'obtenir une synchronisation parfaite entre mécanique et métier à tisser, de supprimer le recours obligatoire à des codeurs à haute définition et de diminuer le coût de l'ensemble.This having been stated, it will be indicated that the present invention has set goals of reducing energy consumption, getting a perfect synchronization between mechanical and loom, to remove mandatory use of high definition coders and decrease the cost of the whole.
Le système d'entrainement suivant l'iinvention est défini à la revendication
1The training system according to the invention is defined in the
Conformément à l'invention, l'arbre d'entrée de la mécanique est actionné d'une part par un moteur indépendant à couple variable contrôlé, non asservi à l'arbre principal du métier, d'autre part par un arbre de synchronisation relié à l'arbre principal précité.In accordance with the invention, the mechanical input shaft is actuated on the one hand by an independent motor with variable torque controlled, not enslaved to the main tree of the trade, on the other hand by a tree of synchronization linked to the aforementioned main tree.
Cette dualité de sources motrices pour l'entraínement de la mécanique sans asservissement électrique au métier comporte des avantages pratiques considérables :
- l'arbre de synchronisation ne transmet qu'un couple très faible, de sorte qu'il peut être établi à une section réduite ;
- la puissance est localisée au plus près de la mécanique et ne transite donc pas à travers le métier ;
- de très grandes vitesses de fonctionnement sont susceptibles d'être atteintes avec un métier à tisser et une mécanique de tissage fortement chargés ;
- le prix de revient de l'ensemble du système d'entraínement est sensiblement abaissé par rapport aux solutions antérieures.
- the synchronization shaft transmits only a very low torque, so that it can be established at a reduced section;
- the power is located as close as possible to the mechanics and therefore does not pass through the loom;
- very high operating speeds are likely to be achieved with a heavily loaded loom and weaving machine;
- the cost price of the entire drive system is significantly lowered compared to previous solutions.
Conformément à un mode de mise en oeuvre particulièrement avantageux de l'invention, le contrôle du couple du moteur indépendant est opéré à l'aide d'un variateur électronique associé à un calculateur agencé de manière à traiter convenablement les informations recues du contrôleur de pilotage de la mécanique. Ce calculateur détermine à chaque instant le couple en fonction des déséquilibres élastiques détectés par le contrôleur.In accordance with a particularly advantageous embodiment of the invention, the torque control of the independent motor is operated at using an electronic variator associated with a computer arranged to properly process the information received from the controller mechanical control. This calculator determines at all times the torque as a function of the elastic imbalances detected by the controller.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre
l'invention, les caractéristiques qu'elle présente et les avantages
qu'elle est susceptible de procurer :
En fig. 1, la référence 1 désigne l'arbre d'entrée qui assure l'entrainement
de la mécanique Jacquard schématisée en 2. Cette mécanique 2 est
équipée d'un codeur 3 qui détecte à tout moment la position angulaire de
l'arbre 1 et qui envoie l'information correspondante 4 au contrôleur 5
qui opère le lisage électronique du programme d'armure introduit dans
ledit contrôleur, afin d'envoyer les informations d'armure 6 à la mécanique
2.In fig. 1,
Simultanément, le contrôleur 5 envoie une information de position angulaire
7 et une information d'armure 8 à un calculateur 9 dont l'agencement
fonctionnel a été illustré en fig. 2.Simultaneously, the
Comme montré, ce calculateur 9 renferme trois modules référencés 10, 11 et 12, lesquels recoivent tous l'information de position angulaire 7 émise par le contrôleur 5 :
- le
module 10 renferme en mémoire les caractéristiques de tous les ressorts de rappel associés aux lisses du harnais de lamécanique 2, de sorte que connaissant à tout moment la position angulaire (information 7), l'effort de rappel de chaque ressort en fonction de la position en hauteur de la lisse considérée, et le sens de déplacement des lisses (information d'armure 8), il est à même de calculer le couple de déséquilibre à chaque instant en fonction de la différence d'effort de rappel élastique entre les lisses qui montent et les lisses qui descendent. - le
module 11 renferme en mémoire les inerties des pièces à entraíner et il est susceptible de calculer d'une part la vitesse de ces pièces en fonction de la variation de la position angulaire 7 dans le temps t (valeur ), d'autre part l'accélération desdites pièces en fonction de la variation de la vitesse ( ), ces valeurs permettant de calculer le couple d'inertie ; - enfin le
module 12 est agencé pour prendre en compte des couples constants mémorisés, par exemple le couple de nivelage.
-
module 10 contains in memory the characteristics of all the return springs associated with the heddles of the harness ofmechanics 2, so that knowing at all times the angular position (information 7), the return force of each spring as a function of the position in height of the heald considered, and the direction of displacement of the heald (armor information 8), it is able to calculate the unbalance torque at each instant according to the difference in elastic return force between the beams going up and beams going down. - the
module 11 contains in memory the inertias of the parts to be driven and it is capable of calculating on the one hand the speed of these parts as a function of the variation of theangular position 7 in time t (value), on the other hand l acceleration of said parts as a function of the variation in speed (), these values making it possible to calculate the torque of inertia; - finally the
module 12 is arranged to take account of the stored constant torques, for example the leveling torque.
Les informations 13 (couple de déséquilibre), 14 (couple d'inertie) et
15 (couples constants) respectivement émises par les modules 10, 11 et
12 du calculateur 9 sont envoyées à un additionneur électronique 16 au
niveau duquel elles sont totalisées afin de définir l'information 17
correspondant au couple résultant.Information 13 (imbalance torque), 14 (inertia torque) and
15 (constant pairs) respectively emitted by
Cette information 17 est envoyée au variateur 18 d'un moteur indépendant
19 (fig. 1) équipé d'un frein automatique 19', lequel moteur 19 entraíne
l'arbre d'entrée 1 de la mécanique 2. Entre le moteur 19 et la mécanique
2, l'arbre 1 est pourvu d'un couple conique 20 assurant sa liaison avec
un arbre vertical de synchronisation 21 dont la base est elle-même reliée
par un autre couple conique 22 à l'arbre principal 23 qui assure
l'entraínement du métier à tisser 24.This
L'arbre d'entrée 1 de la mécanique 2 est en conséquence entraíné par
deux sources motrices distinctes 19 et 23, les valeurs respectives des
couples exercés sur ledit arbre 1 par ces deux sources variant à tout
moment en fonction du couple résultant 17.The
Ce dernier varie de manière considérable en fonction de l'armure, cette
variation s'exerçant dans les deux sens (positif ou moteur, négatif ou
récepteur), comme l'illustre le diagramme de fig. 3 montrant la succession
des coups (introduction des duites) du métier 24 en fonction de
l'armure. On conçoit que si ce couple résultant 17 est calculé de manière
assez précise, le moteur indépendant 19 assure la majorité de la
transmission de puissance appliquée à l'arbre d'entrée 1, tandis que
l'arbre de synchronisation 21 ne servira qu'à compenser les erreurs de
calcul et les variations instantanées de la vitesse du métier.The latter varies considerably depending on the armor, this
variation occurring in both directions (positive or motor, negative or
receiver), as shown in the diagram in fig. 3 showing the estate
moves (introduction of picks) from
Fig. 4 fait apparaítre en grisé la partie du couple fournie par le
moteur 19, en clair la faible partie du couple transmis par l'arbre de
synchronisation 21. Ce partage des efforts est très favorable puisqu'il
permet d'obtenir une synchronisation parfaite entre le métier 24 et la
mécanique 2 à l'aide du seul codeur 3, de type usuel ; l'économie
d'énergie est sensiblement réduite et le coût général est abaissé.Fig. 4 shows in gray the part of the torque provided by the
On conçoit que le système suivant l'invention est susceptible d'être appliqué aux mécaniques du genre des ratières moyennant incorporation d'un contrôleur approprié.It is understood that the system according to the invention is capable of being applied to the mechanics of the dobby kind by incorporation an appropriate controller.
Claims (3)
- A system for driving the mechanisms for forming the shed on looms, characterised in that it comprises, for actuating the input shaft (1) of the mechanism (2), firstly an independent motor (19) of controlled variable torque, not servo-controlled by the main shaft (23) of the loom (24), and secondly a synchronisation shaft (21) connected to the aforementioned main shaft (23).
- A system according to Claim 1, characterised in that the torque supplied by the independent motor (19) is controlled by means of an electronic variator (18) associated with a calculator (9) arranged so as to process suitably the data (7 and 8) received from the controller (5) which effects the electronic reading of the weave program and the driving of the mechanism (2).
- A system according to Claim 2, characterised in that the calculator (9) is arranged to calculate at any moment the torques (13, 14, 15) which are totalled by an adder (16) to define the resulting torque (17) sent to the variator (18) of the independent motor (19).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504289 | 1995-04-05 | ||
FR9504289A FR2732698B1 (en) | 1995-04-05 | 1995-04-05 | SYSTEM FOR THE TRAINING OF MECHANICS FOR THE FORMATION OF CROWDS ON WEAVING LOOMS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0736622A1 EP0736622A1 (en) | 1996-10-09 |
EP0736622B1 true EP0736622B1 (en) | 1998-09-16 |
Family
ID=9477962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96420110A Expired - Lifetime EP0736622B1 (en) | 1995-04-05 | 1996-04-03 | Driving system for shedding mechanisms on looms |
Country Status (6)
Country | Link |
---|---|
US (1) | US5642757A (en) |
EP (1) | EP0736622B1 (en) |
JP (1) | JP3652004B2 (en) |
DE (1) | DE69600650T2 (en) |
ES (1) | ES2123326T3 (en) |
FR (1) | FR2732698B1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2727987B1 (en) * | 1994-12-07 | 1997-01-17 | Icbt Diederichs Sa | LOOM |
DE59607360D1 (en) * | 1996-04-04 | 2001-08-30 | Sulzer Textil Ag Rueti | Jacquard weaving machine and method for operating the same |
BE1010849A3 (en) * | 1997-01-14 | 1999-02-02 | Picanol Nv | DRIVE for a weaving machine. |
EP0872585B1 (en) * | 1997-04-16 | 2000-07-19 | Sulzer Textil Ag | Loom with dobby and method for controlling such a loom |
DE10061717B4 (en) * | 2000-12-12 | 2006-01-26 | Lindauer Dornier Gmbh | Drive arrangement for a weaving machine and shedding machine |
DE10206972A1 (en) * | 2002-02-20 | 2003-09-04 | Dornier Gmbh Lindauer | Drive arrangement of a weaving machine and shedding machine with separate drive technology |
CZ302120B6 (en) * | 2003-10-20 | 2010-10-20 | VÚTS, a.s. | Weaving machine |
BE1016287A6 (en) * | 2004-07-14 | 2006-07-04 | Picanol Nv | SHAPE FORMING FOR A WEAVING MACHINE AND WEAVING MACHINE. |
DE102004045208A1 (en) * | 2004-09-17 | 2006-04-06 | Siemens Ag | loom |
US7475708B2 (en) * | 2004-11-17 | 2009-01-13 | Groz-Beckert Kg | Shaft drive for heald shafts of weaving machines |
DE502006006342D1 (en) * | 2006-10-06 | 2010-04-15 | Groz Beckert Kg | Shaft gear for a weaving machine |
DE102011006368B3 (en) | 2011-03-29 | 2012-02-16 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Method and loom for shedding |
CN102978773A (en) * | 2012-11-23 | 2013-03-20 | 王勇 | Cam synchronous transmission jacquard loom and numerical control method thereof |
CN102981449A (en) * | 2012-11-23 | 2013-03-20 | 王勇 | Numerical control method for cam synchronous transmission jacquard loom |
US9546069B2 (en) * | 2015-04-09 | 2017-01-17 | Microsoft Technology Licensing, Llc | Drive for electromechanical control of lines |
US10501872B2 (en) * | 2015-08-26 | 2019-12-10 | Picanol | Drive mechanism for driving a heald frame of a weaving machine |
FR3097565B1 (en) * | 2019-06-19 | 2022-08-12 | Staubli Sa Ets | Textile machine, weaving loom comprising such a textile machine and associated methods |
CN113186630B (en) * | 2021-04-28 | 2023-04-14 | 山东日发纺织机械有限公司 | Power device of loom |
CN113867268B (en) * | 2021-08-19 | 2024-04-09 | 福建省万物智联科技有限公司 | Warp knitting jacquard intelligent row number control system and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2520762A1 (en) * | 1982-01-29 | 1983-08-05 | Staubli Sa Ets | IMPROVEMENTS IN DEVICES FOR SEARCHING FOR STEP ASSOCIATED WITH RATIERS AND OTHER WEAVING MECHANICS |
DE8204594U1 (en) * | 1982-02-19 | 1982-07-01 | Tomen Textilmaschinen GmbH, 4060 Viersen | WEAVING MACHINE |
NL8600870A (en) * | 1986-04-07 | 1987-11-02 | Picanol Nv | DRIVE FOR WEAVING MACHINES. |
WO1989001540A1 (en) * | 1987-08-12 | 1989-02-23 | Fred Borisch | Power loom with a mechanical dobby loom |
JPH03249233A (en) * | 1990-02-23 | 1991-11-07 | Murata Mach Ltd | Jacquard driving apparatus |
FR2660672B1 (en) * | 1990-04-06 | 1992-08-28 | Staubli Sa Ets | SYSTEM FOR DRIVING A MACHINE FOR FORMING A CROWD ON A WEAVING MACHINE. |
-
1995
- 1995-04-05 FR FR9504289A patent/FR2732698B1/en not_active Expired - Fee Related
-
1996
- 1996-04-01 US US08/626,040 patent/US5642757A/en not_active Expired - Fee Related
- 1996-04-03 JP JP08165096A patent/JP3652004B2/en not_active Expired - Fee Related
- 1996-04-03 DE DE69600650T patent/DE69600650T2/en not_active Expired - Lifetime
- 1996-04-03 ES ES96420110T patent/ES2123326T3/en not_active Expired - Lifetime
- 1996-04-03 EP EP96420110A patent/EP0736622B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69600650T2 (en) | 1999-02-11 |
EP0736622A1 (en) | 1996-10-09 |
JPH08284042A (en) | 1996-10-29 |
JP3652004B2 (en) | 2005-05-25 |
US5642757A (en) | 1997-07-01 |
FR2732698A1 (en) | 1996-10-11 |
FR2732698B1 (en) | 1997-05-23 |
ES2123326T3 (en) | 1999-01-01 |
DE69600650D1 (en) | 1998-10-22 |
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