EP0131481B1 - Mischwechsler für Webmaschinen - Google Patents

Mischwechsler für Webmaschinen Download PDF

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Publication number
EP0131481B1
EP0131481B1 EP84401056A EP84401056A EP0131481B1 EP 0131481 B1 EP0131481 B1 EP 0131481B1 EP 84401056 A EP84401056 A EP 84401056A EP 84401056 A EP84401056 A EP 84401056A EP 0131481 B1 EP0131481 B1 EP 0131481B1
Authority
EP
European Patent Office
Prior art keywords
control means
push
inactive
individual
finger
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
EP84401056A
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English (en)
French (fr)
Other versions
EP0131481A1 (de
Inventor
Yves Juillard
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.)
Alsacienne de Construction de Material Textile
Alsacienne de Constructions Mecaniques SA
Original Assignee
Alsacienne de Construction de Material Textile
Alsacienne de Constructions Mecaniques SA
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.)
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Publication date
Application filed by Alsacienne de Construction de Material Textile, Alsacienne de Constructions Mecaniques SA filed Critical Alsacienne de Construction de Material Textile
Publication of EP0131481A1 publication Critical patent/EP0131481A1/de
Application granted granted Critical
Publication of EP0131481B1 publication Critical patent/EP0131481B1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to weft yarn mixing devices which allow different wefts, possibly of different colors, to be inserted from a feed located outside a weaving machine.
  • devices of this kind include a support to be fixed on the machine and on which are mounted: a plurality of fingers for presenting the different weft threads adapted to each take, selectively, ie an active active position for presenting a thread corresponding frame, ie a retracted inactive position; first individual positive control means for bringing each presentation finger to the advanced active position; second individual positive control means for returning each presentation finger to its retracted inactive position; general control means of the aforementioned first individual control means, adapted to be connected to the main shaft of the machine to operate in synchronism with said shaft; means for selective connection between the general control means and the first individual control means; and programmed selection control means suitable for controlling said selective connection means.
  • a weft mixing device as defined above, has been described for example in document GB-A-2099863 and its definition is repeated in the preamble of claim 1 appended.
  • the object of the present invention is to remedy this drawback by allowing a presentation finger to remain, for several successive cycles, in the advanced position, without returning to the retracted position, if the same weft thread is used several times successively.
  • the device according to the invention is characterized in that the second individual means for controlling the return of each presentation finger to its retracted inactive position are also subjected to the action of the selective connection means, and in that each presentation finger is connected to a rocker arm subjected to the antagonistic actions programmed by the first and second individual control means.
  • the second return control means are also subject to selective connection means and to the fact that a rocker arm, to which the presentation finger is coupled, is controlled by both the first and second control means, a presentation finger which has been advanced will remain in this advanced position, without being brought back each cycle to the retracted position, if the same weft thread is to be used for several successive cycles.
  • the weft yarn mixing device for a weaving machine shown in FIG. 1 is mounted on a support 1 to be fixed on the machine; it includes a plurality of fingers such as 2, for presenting the different weft threads, eight in number, for example.
  • the finger 2 can slide in a hole 3 of the support 1, its distal end has an eye 4 for receiving a weft thread, while its proximal end is articulated, by an axis 5, on a rocker arm 6 which can pivot on an axis 7 carried by the support 1.
  • the finger 2 can selectively take either a remote inactive position which is that shown in solid lines in the drawing, or an advanced active position for presenting the corresponding weft yarn which is that shown in broken lines in 2A.
  • finger 2 is shown rectilinear, while other fingers, such as 2B and 2C, are shown curved and this so that the different fingers present their weft threads in substantially the same location, moreover possibly several threads at the same time, for example two.
  • Each presentation finger is associated with a rocker arm; thus, the different fingers 2, 2B and 2C, for example, are associated, respectively, rockers 6, 6B and 6C (see also Figure 3).
  • the general control means comprise: a grooved cam 11, a shaft 12 which rotates in a bearing 13 integral with the support 1 and on which the cam 11 is fixed, a toothed pulley 14 also fixed on the shaft 12, a toothed belt 15 which passes over the toothed pulley 14 and over another pulley (not shown) connected to the main shaft of the machine, so that the cam 11 rotates in synchronism with said main shaft of the machine; a roller 17 housed in the groove of the cam 11, a lever 18 with two arms 19, 21 which pivots, by its top, on an axis 22 also carried by the support 1, an axis 23 which is mounted on the end of the arm 21 and which carries the roller 17, an axis 25 mounted on the end of the other arm 19 of the two-arm lever, a connecting rod 24, one end of which is articulated on the axis 25, a crank 26, the hub 27 (see also FIG.
  • This mechanism comprises: a bush 45 also mounted with free pivoting and sliding on the shaft 28 next to the hub 27 of the crank 26 and whose face adjacent to said hub also has a diametrical groove 46 capable of engaging on the pin 41, when the sleeve 45 is pushed against the hub 27 of the crank, under the action of a handle 47 which is pivotally mounted on a transverse axis 48 planted in the sleeve 45 and which has an extension 51 whose end is engaged in an arc-shaped lumen 52 formed in a guide 53 integral with the support 1, in the form of a portion of cylindrical surface, coaxial with the shaft 28, which makes it possible to rotate the shaft 28 by means of the lever previously pushed in the direction of arrow f2 to ensure the disengagement of the mechanical control.
  • the individual means for controlling the weft presentation fingers have a positive action in both directions. They comprise, for each finger, for example for finger 2 associated with the rocker arm 6, an active positioning drawer 56 and an inactive positioning drawer 57 connected to the rocker arm 6 by two pushers 58, 59, respectively.
  • the two drawers 56 and 57 are slidably mounted in slides 61, 62 fixed on the support 1.
  • the two pushers 58, 59 are engaged, by one of their rounded ends, in the bottom of corresponding rounded notches 63, 64 formed in the two drawers, and, at their other end, in the form of a cylindrical head 65, 66, in bores in the form of corresponding cylindrical surface portions 67, 68 formed in the rocker arm 6.
  • the means for selective connection between the general control means and the individual means for controlling the presentation fingers comprise, for each finger, a push rod 71 whose proximal end is articulated on the axis 34 general control means, the distal end of which, cut at a bevel 72 (see also FIG. 4), can engage, selectively, either in a notch 73 of the upper drawer 56 for placing the corresponding finger in active position when said push rod occupies its high position shown in FIG. 4, or in a notch 74 in the lower drawer 57 for placing the finger inactive position when the push rod occupies its low position as shown in FIG. 1.
  • each push rod such as 71
  • the passage of each push rod, such as 71, from its low position to its high position is done under the control of programmed selection control means.
  • These means comprise, for each push rod, an individual electromagnet 76 fixed on the support 1, assisted by a spring 77 which tends to move the push rod away from the poles of the electromagnet.
  • mechanical means are provided which bring automatically and positively each push rod into contact with the poles of the corresponding electromagnet, at the end of each movement of stem recoil.
  • These means comprise a cam 78 on the push rod 71, which cooperates with a fixed stop 79 secured to the support 1, the locations of the cam on the push rod and the stop on the support, as well as the configuration and the dimensions. of said cam, being such that, only when the push rod reaches the end of its recoil stroke, under the action of the general control means, it is raised positively, under the effect of said cam, against the poles of the electromagnet 76.
  • the device comprises manual selection control means in the form of individual selection levers associated with each of the push rods; these levers such as 81 or 82, for example, associated with the push rods 71, 71 B for controlling the presentation fingers 2, 2B respectively, are pivotally mounted on a common axis 83 carried by the support 1, and are located just below the corresponding push rods. So. when exercising, by hand, on the outer end of these levers. a vertical thrust from top to bottom, that is to say in the direction of arrow f3 in FIG. 1, the inner end of the lever keeps the corresponding push rod 71, 71 B raised against the spring 77, as long as the manual push is maintained on the lever.
  • these levers such as 81 or 82, for example, associated with the push rods 71, 71 B for controlling the presentation fingers 2, 2B respectively, are pivotally mounted on a common axis 83 carried by the support 1, and are located just below the corresponding push rods. So. when exercising, by hand, on the outer end of these levers
  • the weft thread to be presented is another thread than that which has just been presented by the finger 2B. for example that threaded into the eye of finger 2. It is then the electromagnet 76, associated with the push rod 71, which is excited; it maintains this rod in the raised position (FIG. 4) while the continued rotational movement of the cam 11 causes all of the push rods to advance.
  • each rocker arm is brought into a positive position in a timely manner in the active position under the action of a push rod in the high position, and that it is also automatically and positively brought into position inactive, under the action of the same push rod in the low position. It can also be said that each rocker arm is returned to the inactive position when another rocker arm is placed in the active position, so that any presentation finger remains permanently in the active position as long as the wire frame it controls must be inserted successively several times.

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

Claims (7)

1. Mischwechsler für Webmaschinen, mit einem an der Maschine zu befestigenden Ständer, an welchem angebracht sind : eine Mehrzahl von zum Bereithalten von Schußfäden bestimmten Vorlagefingern, die jeder wahlweise entweder eine vorgeschobene Wirkstellung zur Vorlage eines entsprechenden Schußfadens oder eine zurückgenommene Ruhelage einnehmen können, ferner erste Einzelmittel (56, 58) als Zwangsantrieb zum Überführen jedes Vorlagefingers in die vorgeschobene Wirkstellung, zweite Einzelmittel (57, 59) als Zwangsantrieb für die Rückführung jedes Vorlagefingers in seine zurückgenommene Ruhelage, allgemeine Mittel zum Antrieb der erwähnten ersten Einzelantriebsmittel, die mit der Hauptantriebswelle der Maschine verbindbar sind, um synchron mit der genannten Welle zu arbeiten, eine Einrichtung (71) zum wahlweisen Verbinden der allgemeinen Antriebsmittel mit den ersten Einzelantriebsmitteln, sowie programmierte Auswahlantriebsmittel zum Steuern der Einrichtung zum wahlweisen Verbinden, dadurch gekennzeichnet, daß die zweiten Einzelantriebsmittel (57, 59) zum Rückführen jedes Vorlagefingers (2, 2B, 2C) in seine zurückgenommene Ruhelage ebenfalls der Wirkung der Einrichtung zum wahlweisen Verbinden (71) unterworfen sind, und daß jeder Vorlagefinger (2, 2B, 2C) mit einer Kippvorrichtung (6, 6B, 6C) verbunden ist, die den programmierten gegensätzlichen Einwirkungen der ersten und der zweiten Einzelantriebsmittel (56, 58 und 57, 59) ausgesetzt ist.
2. Mischwechsler nach Anspruch 1, dadurch gekennzeichnet, daß jede Kippvorrichtung (6) mit einem Schieber (56) zum Überführen eines Vorlagefingers in die Wirkstellung und mit einem Schieber (57) zum Rückführen desselben Fingers in die Ruhelage verbunden ist, und daß die Einrichtung zum wahlweisen Verbinden eine der Zahl der Kipper entsprechende Mehrzahl von Schubstangen (71) aufweist, deren maschinenzugewandtes Ende an eine Antriebsachse (34) gelenkt ist, die durch die allgemeinen Antriebsmittel (11, 18. 24, 26, 28, 32, 34) zu einer hin und her gehenden Transversalbewegung veranlaßt ist, und deren maschinenabgewandtes Ende sich wahlweise entweder in aktiver Stellung gegenüber dem entsprechenden Schieber für das Überführen in Wirkstellung oder in inaktiver Stellung gegenüber dem entsprechenden Schieber für das Rückführen in die Ruhelage befindet, je nachdem, ob die betrachtete Schubstange durch die Auswahlantriebsmittel (76) beaufschlagt ist oder nicht.
3. Mischwechsler nach Anspruch 2, dadurch gekennzeichnet, daß die Auswahlantriebsmittel aus einer Mehrzahl einzelner Elektromagnete (76) bestehen, deren Zahl gleich der der Schubstangen (71) ist und die sich unmittelbar an den zugeordneten Schubstangen befinden und diese wahlweise anziehen können, um sie vorübergehend in Wirkstellung zu halten.
4. Mischwechsler nach Anspruch 3, dadurch gekennzeichnet, daß jede Schubstange (71) durch eine Feder (77) in ihre Ruhelage gedrückt wird.
5. Mischwechsler nach Anspruch 3, dadurch gekennzeichnet, daß jede Schubstange (71) einen Nocken (78) trägt, der mit einem mit dem Ständer (1) starr verbundenen feststehenden Anschlag (79) zusammenwirkt, und daß die Orte des Nockens auf der Schubstange und des Anschlags auf dem Ständer sowie die Form und die Abmessungen dieses Nockens so gewählt sind, daß die Stange erst, wenn sie unter der Wirkung der allgemeinen Antriebsmittel das Ende ihrer Rücklaufbahn erreicht, zwangsweise unter der Wirkung des genannten Nockens gegen den entsprechenden Auswahl-Elektromagneten zurückgedrückt wird.
6. Mischwechsier nach Anspruch 1, dadurch gekennzeichnet, daß er mit Entkupplungseinrichtungen (27, 41) für die allgemeinen Antriebsmittel (28, 32, 34) versehen ist sowie mit Mitteln (41,45, 46, 47) für den Antrieb der erwähnten selektiven Verbindungsmittel (71) von Hand und mit handbetätigten Mitteln (81, 82) für den Auswahlantrieb.
7. Mischwechsler nach den Ansprüchen 2 und 6, dadurch gekennzeichnet, daß die manuellen Antriebsmittel für die Auswahlverbindungsmittel einen Bedienungsgriff (47) für die Betätigung der Achse (28) zum Antrieb der Schubstangen aufweisen, und daß die manuellen Antriebsmittel für die Auswahl Einzelhebel (81. 82) besitzen, damit die Schubstangen (71) wahlweise in Wirkstellung bringbar sind.
EP84401056A 1983-06-24 1984-05-23 Mischwechsler für Webmaschinen Expired EP0131481B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8310478 1983-06-24
FR8310478A FR2547838B1 (fr) 1983-06-24 1983-06-24 Dispositif melangeur de fils de trame pour machines a tisser

Publications (2)

Publication Number Publication Date
EP0131481A1 EP0131481A1 (de) 1985-01-16
EP0131481B1 true EP0131481B1 (de) 1986-11-12

Family

ID=9290144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401056A Expired EP0131481B1 (de) 1983-06-24 1984-05-23 Mischwechsler für Webmaschinen

Country Status (4)

Country Link
US (1) US4556089A (de)
EP (1) EP0131481B1 (de)
DE (1) DE3461308D1 (de)
FR (1) FR2547838B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716124C1 (de) * 1987-05-14 1988-07-21 Picanol Nv Schussfadenwechselvorrichtung an Webmaschinen zum wahlweisen Bewegen von Vorlagefingern

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618445C1 (de) * 1986-05-31 1987-07-02 Dornier Gmbh Lindauer Einrichtung zur Hinreichung von Schussfaeden fuer die Schussfadeneintragorgane bei schuetzenlosen Webmaschinen
US4935346A (en) 1986-08-13 1990-06-19 Lifescan, Inc. Minimum procedure system for the determination of analytes
EP0293558B1 (de) * 1987-04-03 1991-08-07 GebràœDer Sulzer Aktiengesellschaft Schussfaden-Auswählvorrichtung für eine Webmaschine
DE58902024D1 (de) * 1988-04-25 1992-09-17 Sulzer Ag Webmaschine.
BE1002081A3 (nl) * 1988-06-17 1990-06-19 Picanol Nv Inrichting voor het presenteren van inslagdraden bij weefmachines.
BE1002764A6 (nl) * 1989-01-23 1991-05-28 Wiele Michel Van De Nv Stuurmechanisme voor het selecteren van inslagdraden bij grijperweefmachines.
IT1230951B (it) * 1989-06-30 1991-11-08 Nuovo Pignone Spa Dispositivo perfezionato di selezione e presentazione dei fili di trama per telai tessili ad alta velocita'
US5074340A (en) * 1989-07-05 1991-12-24 Sulzer Brothers Limited Yarn selector unit for a weft feeder
US8596303B1 (en) 2012-01-11 2013-12-03 Susan B. Ballenger Supplementary beater for a handloom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES356720A1 (es) * 1968-07-31 1970-02-16 Camarasa Honge Maquina selectora de hilos para labores de tejeduria y o- tras aplicaciones textiles.
US3731712A (en) * 1971-07-06 1973-05-08 Diederichs Atel Weft distributor and selector for power looms
DE2509664A1 (de) * 1975-03-06 1976-09-09 Scheibler Peltzer & Co Schussfadensteuereinrichtung fuer webmaschinen
CH620477A5 (de) * 1976-01-30 1980-11-28 Staeubli Ag
CS190733B1 (en) * 1976-08-24 1979-06-29 Jaromir Malasek Weft control apparatus,especially for jet weaving looms with alternate weft insertion
CH650290A5 (de) * 1981-06-09 1985-07-15 Saurer Ag Adolph Schussfaden-auswahlvorrichtung an einer webmaschine.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716124C1 (de) * 1987-05-14 1988-07-21 Picanol Nv Schussfadenwechselvorrichtung an Webmaschinen zum wahlweisen Bewegen von Vorlagefingern

Also Published As

Publication number Publication date
FR2547838A1 (fr) 1984-12-28
DE3461308D1 (en) 1987-01-02
EP0131481A1 (de) 1985-01-16
FR2547838B1 (fr) 1985-11-29
US4556089A (en) 1985-12-03

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