EP0109607B1 - Métier à tisser à plat avec une navette à pince circulant dans un circuit fermé - Google Patents

Métier à tisser à plat avec une navette à pince circulant dans un circuit fermé Download PDF

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Publication number
EP0109607B1
EP0109607B1 EP83111162A EP83111162A EP0109607B1 EP 0109607 B1 EP0109607 B1 EP 0109607B1 EP 83111162 A EP83111162 A EP 83111162A EP 83111162 A EP83111162 A EP 83111162A EP 0109607 B1 EP0109607 B1 EP 0109607B1
Authority
EP
European Patent Office
Prior art keywords
speed
shuttle
loom
shooter
shed
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
EP83111162A
Other languages
German (de)
English (en)
Other versions
EP0109607A1 (fr
Inventor
Bernard Dr. Dipl.-Ing. Krenkel
Heinz Joos
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.)
F Oberdorfer & Co KG Industriegewebe-Techni GmbH
Original Assignee
OBERDORFER FA F
F Oberdorfer & Co KG Industriegewebe-Technik GmbH
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
Priority claimed from DE19823242121 external-priority patent/DE3242121A1/de
Priority claimed from DE19833325294 external-priority patent/DE3325294A1/de
Application filed by OBERDORFER FA F, F Oberdorfer & Co KG Industriegewebe-Technik GmbH filed Critical OBERDORFER FA F
Priority to AT83111162T priority Critical patent/ATE22472T1/de
Publication of EP0109607A1 publication Critical patent/EP0109607A1/fr
Application granted granted Critical
Publication of EP0109607B1 publication Critical patent/EP0109607B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D03D49/66—Shuttle races
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle

Definitions

  • the invention relates to a flat weaving machine with rapier shooters according to the preamble of the main claim.
  • a weaving machine is described, for example, in FR-A-2 406 014.
  • the shooter is grasped immediately before entering the compartment by a weft device running continuously at the weft speed in the form of a toothed belt and accelerated to the weft entry speed, this weft device being fed to the shooters in such a way that the shooter is fed in such a way that the shooter of the weft device is shot into the opened compartment and thereby detects the ready weft thread and drags it through the compartment.
  • the shooter then returns via the outlet arch and the return path section of the closed orbit to the control device, from which he is then immediately or after a short stop again fed to the continuously running shooting device, with which the work cycle begins again.
  • the round-gripper shooter Compared to the much heavier hit shooters, however, the round-gripper shooter has the advantage that because of its lower weight it is less dangerous if it flies out of the compartment due to any malfunction, although this risk is greater due to its shorter length.
  • the invention is therefore based on the object of designing a flat weaving machine with the features of the preamble of the main claim in such a way that, compared to the previous possibilities, significantly higher shooter speeds in the compartment and significantly higher numbers of wefts per time unit can be achieved.
  • this return path section between the two reversing arches runs in a straight line in hitherto known gripper rifle tracks
  • this return path section according to the invention is preferably essentially arcuate over its entire length or is lifted out of the rectilinear connection of the reversing curve ends by arc pieces at the beginning and / or end, so that an in the belt drive engaging the web arch can influence the shooter over a long distance. Any necessary spontaneous speed change of the belt drive between the detection and the release of the contactor can be achieved with the drive motors available today.
  • a weft device which essentially takes up the entire sheet arch before entering the compartment to achieve a significantly higher and also more precisely controllable shooter entry speed, since at least in the last part of the web arc there is no more slip between the shooter and the shooting device.
  • the forced guidance of the shooters running through the compartment through guide supports on the sley and corresponding guide elements on the shooter not only ensures that the shooters run smoothly through the compartment so that there is no tissue damage caused by shuttle shooters, but also eliminates the high shooter speeds that are now possible Danger to personnel that could result from a shooter flying out of the compartment.
  • the first phase in the form of a push drive of a shooter released from the magazine can take place before the web sheet before Subject entry from the initial speed zero to a final speed of the first phase, which is possible by means of an electric motor, electromagnetically, by means of memory-assisted, pre-tensioned pneumatic cylinders or a pre-tensioned spring.
  • the second acceleration phase of the shooter the entire arch of the path is then available, the length of which is sufficient to accelerate the shooter to a very high compartment entry speed.
  • the acceleration belt in the sheet bend in front of the compartment entrance thus pulsates, and the pulsation can be controlled, for example, by protection-controlled buttons on the orbit, but also by the controlling device.
  • the triggering of the transfer process from the magazine is preferably dependent on the position of the shop. As a result, the next shooter can be accelerated and shot into the compartment immediately after completing a web shop attack.
  • FIG. 1 shows the orbit for the rapier shooters of the weaving machine in a preferred embodiment. It is composed of the area of the compartment 11, the rear reversing sheet 12, the lower return path 13 and the acceleration sheet 14 located in front of the compartment. Between the end of the return section 13 and the beginning of the acceleration sheet 14 there is a magazine 15 for several shooters 16 as well as a transfer device 17 which, in time with the weaving machine rhythm, detects a ready shooter from a belt 18 continuously driven at high speed and is accelerated over the entire distance of the acceleration bow 14 to the high weft speed at which the shooter then enters the opened compartment 11 after he has taken over a thread provided at a thread transfer station 19. The details of the thread transfer as well as the knocking out of the thread from the rapier and cutting off are also not shown, since they are not relevant to the invention in this context.
  • a pneumatic cylinder provided with a plunger 22 is shown, which delivers the shooter intended for the next shot in precise cycle control for the movement of the shutter, taking into account the passage distance on the shot device in the acceleration sheet 14 at a certain speed, so that the shooter in at the right time, when the shutters are in the rear rest position. Since in this embodiment several shooters orbit in the orbit, regardless of the duration of the return of the shooters from the compartment exit to the magazine 15, a quick sequence of the shop movement is possible, with a very large part of the time of a weaving cycle being available for the shop quiet. On the one hand, because of the high shooter speeds to be achieved with the weft device 18 at the entrance to the compartment and, on the other hand, because of the rapid shooter sequence, a very high number of looms can be achieved.
  • This interrupted return path which is offset vertically to the adjoining sheet bend, offers very good spatial conditions for the rifle magazine and for a favorable arrangement of a shock drive of the controlling transfer device 17, 22 executing the first acceleration phase.
  • the shooters 16 are also accelerated by the acceleration belt 18 already described for FIG. 1 in the acceleration curve 14, but the clock-controlled transfer of the shooters 16 takes place by means of a shaft 24 equipped with striking arms 23, which are clocked by one each is rotated by a certain angle, whereby a shooter 16 is delivered to the acceleration belt 18 and is grasped by the latter, as shown in FIG. 3.
  • the last end of the return path 13 represents, as it were, the magazine for other available shooters 16.
  • the shaft 24 can be driven by triggering a prestressed spring.
  • the contactor 16 to be accelerated is transferred to the acceleration belt 18 by clock-controlled movement of a transport belt 26 provided with projections 25 in the last section of the return path 13 of the orbit.
  • the timing control of the belt 26 is determined by the beat rhythm of the weaving machine.
  • FIG. 5 An embodiment of the bullet device especially for shooters sliding through the compartment is shown in FIG. 5.
  • a shooter 16 who is delivered from the return section 13 in a clocked manner to the launcher with its strapping belt 18, is clamped between the belt 18 and a support wheel 30 which supports the belt on the inside of the acceleration sheet 14 and rotates at the circumferential speed of the belt 18, and is ejected at the entrance to the compartment.
  • the weaving machine according to the invention requires guide elements on the shooter and on the reed, guide supports extending over their entire length as counterparts for the guide elements of the shooter in order to ensure that the shooter runs smoothly through the compartment and is prevented from flying out to guarantee.
  • guide elements and associated guide supports are shown in FIGS. 6 to 16.
  • a roller shooter 31 runs between the lower compartment 32 and upper compartment 33. With one side surface, the roller shooter 31 lies with a correspondingly shaped bevel 34 on a corresponding, downward-facing support surface 35 of the reed 36 sitting on the sley of the machine and is thereby prevented from rising.
  • a bar 38 is articulated on an upper rail 37 of the reed, which engages with comb-like projections 39 between the threads of the upper compartment 33.
  • the comb-like projections 39 have a downwardly inclined inclined surface 40 which faces the rifle path and which is matched to a corresponding guide inclined surface 41 on the side of the rifle.
  • the shooter 31 is guided on all sides in the compartment, the required game for a free shooter course is of course observed.
  • FIG. 7 shows a reed 42 which is basically the same as that of FIG. 6 with its guide support 43.
  • the shooter 44 who runs through the compartment as a slide shooter, is supported on the reed 42 with rollers 45 against a guide support surface 46.
  • the other side of the rifle guide is basically the same as that described in FIG. 6.
  • FIGS. 6 and 7 forms a combination of the marksman guides according to FIGS. 6 and 7.
  • the illustrated roller shooter 47 is supported against the reed 48 and the comb-like guide rail 49 articulated thereon by means of support rollers 50 mounted obliquely in the shooter, which means particularly low friction during the passage through the compartment.
  • the upper guide support 51 and 52 does not penetrate between the threads of the upper compartment, so that the upper guide support can be rigidly attached to the reed 53 or 54 if the upper compartment is sufficiently steep without Stop of the reed on the selvedge, the penetration of the guide support into the finished fabric must be feared.
  • Figures 9 and 10 show an articulated attachment of the guards 51 and 52 arn Webeblatt.
  • the roller shooter 55 While in the embodiment according to FIG. 9 the roller shooter 55 is supported on one side with rollers 56 on the top against the threads of the upper compartment supported by the guide support 51 and slides along the reed 53 with a slide rail 57 reaching up to the threads of the upper compartment 33 the shooter 58 in the exemplary embodiment according to FIG. 10 has two such slide rails 59, 60 with which it is supported in relation to the threads of the upper compartment 33 held down by the guide support 52, so that it does not rise and fly out of the compartment.
  • the embodiment of the contactor according to FIG. 10 is particularly simple, but also has only a relatively low lateral stabilization as a result.
  • FIG. 11 shows a further embodiment of the upper guide support articulated on the reed 61 with a comb-like engagement between the threads of the upper compartment 33.
  • the shooter 63 runs in the usual way on rollers 67 through the compartment.
  • the comb-like guide supports for the shooter running through the compartment who, as shown, can be a roller shooter but can also be a slide shooter, grip through the lower compartment 32 and have support surfaces directed downwards and against the reed 68 , while the reed itself has a guide groove 69 adapted to the side edge of the shooter, in which the shooter runs guided.
  • the comb-like guide supports reaching through the bottom compartment 32 from below are either pivotable (70, 71, 72) or vertically displaceable (73, 74) so that they do not interfere with the weaving blade 68 against the selvedge.
  • a track 75 provided with transverse grooves penetrates through the threads of the lower compartment 32, so that the shooter runs along this track 75, while the threads of the lower compartment 32 pass through the transverse grooves lie sunk. This means that the shooter will always find the same career conditions in the subject regardless of the weaving pattern.
  • the track 75 and the guide support 74 can be moved up and down in the beat rhythm of the reed 68.
  • FIG. 17 shows a possible form for the swiveling out of the comb-like upper guide supports from the threads of the upper compartment 33 at the store stop.
  • a weft device 118 driven at a constant compartment entry speed in the form of a drive belt engaging in the sheet sheet 14, which is guided over rollers, one of which is connected to a constantly running motor (not shown).
  • a thread transfer device identified overall by 19, to which the threads to be inserted are fed from magazine bobbins 20.
  • the return path section 113 is arched over its entire length in the illustrated case of FIGS. 18 and 20, so that a shooter 16 running at the intended high speed through the rifle orbit is pressed against a belt drive 115 which ripens into the curved return path section 113 and which drives over Rolls runs, one of which is driven by a speed-controllable motor 117.
  • the modified embodiment of the return path section according to FIG. 19 has at the beginning and end two shorter arc pieces 113a, 113c and in between a straight stretched section, which however is lifted out of the straight connection of the ends of the reversing arches 12 and 14, so that, as can be clearly seen, one Sagittarius 16 moving on the return path section 113a to 113c is caught by the belt of a belt drive 115 engaging in this path section.
  • An adaptation of the shooter rotation time to the weaving machine rhythm with the help of the controlling drive device 115 can now be carried out in a first embodiment of the weaving machine in such a way that with a preselected angular position of the crankshaft of the weaving machine the drive motor 117 of the controlling drive device 115 receives a signal by which the controlling drive device 115 is spontaneously brought to a higher speed value. It is expedient to design the drive motor 117 as a disk motor. At a second angular position of the crankshaft of the weaving machine, in which the shooter 16 has surely already left the controlling drive device 115, the latter is reset to its basic speed by a further signal.
  • the characteristic of the speed change can be adjusted both with regard to the speed values and the time according to the circumstances of the weaving machine, so that certain speed irregularities of the contactor 16, essentially caused by the passage through the shed, are compensated for.
  • a shooter arriving late due to a strong delay in the compartment 11 onto the drive device 115 which is already running at an increased speed due to the first signal the throughput time of the shooter through the return path section 113 is considerably shortened compared to the case that a shooter who has slowed down in the compartment 11 is relatively early strikes the drive device 115, which is still moving at a slow basic speed, in the return path section 113 and therefore runs slowly through part of the return path section. In this way, a certain self-balancing occurs automatically.
  • the drive motor 117 of the controlling drive device 115 is a motor that can be adjusted in several stages, and the number of stages assigned to the first reversing path arc 12 has a corresponding number of shooter position buttons 123 to 128, which are able to determine the passage of the contactor 16.
  • the shooter position buttons 123 to 128 are activated by the first signal of the timing device connected to the crankshaft of the weaving machine, and the shooter position button to which the shooter 16 arrives first after activation activates his signal to a stage control circuit (not shown) for the in FIG Stepped adjustable drive motor 117, while at the same time at least all shooter position buttons following in the shooter running direction are blocked.
  • the signal from the shooter position button then results in the corresponding speed level of the drive motor 117, the assignment being such that the shooter position buttons, with increasing distance from the compartment exit, increase the speed of the controlling drive device 115 with respect to the base speed.
  • the driving device 115 thereby driven at high speed than a shooter quickly leaving the compartment who already has one at the moment of activation of the shooter position button the last button has reached its Signal then sets a speed level of the adjustable drive motor 117 which is only slightly increased compared to the basic speed.
  • FIGS. 18 and 19 a third possibility of speed control for the controlling drive device 115 is shown in FIGS. 18 and 19.
  • a contactor pushbutton 121 in front of the drive belt of the return path section 113 or 113a to c, and the drive motor 117 of the belt 115 can be adjusted in fine steps or continuously.
  • a time counter contained in a control circuit for the motor 117 which is triggered by the first signal of the timing device of the loom crankshaft, is stopped by the tactile signal of the contactor continuous probe 121, and the timing signal of the time counter forms a measure according to which a speed change which is directly related thereto compared to the basic speed on the controlling drive device.
  • a shooter 16 arriving early because of high speed at the shooter run button 121 thus causes only a slight increase in speed of the controlling drive device 115, while a late arriving shooter leads to a high speed of the belt 115 and thus to a short throughput time through the return path section 113.
  • a further belt drive 122 at the end of the first reversing curve 12 is shown in front of the contactor flow switch 121, which engages in the contactor path of the reversing curve 12.
  • This belt drive 122 can in any case delay the shooter 16 arriving from the specialist exit somewhat, so that the controlling drive device 115 in the return path section 113 must always accelerate the shooter to an adapted extent in accordance with the point in time determined by the button 121. It goes without saying that the belt of the delay device 121 can also be driven by a motor for continuous movement.

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

Claims (11)

1. Métier à tisser à plat, équipé d'une navette à pince qui parcourt un circuit fermé constitué d'une première section traversant la foule le long du peigne, d'une seconde section de retour opposée à la première et de courbes de renvoi qui relient ces deux sections du circuit, la navette, avant de pénétrer dans la première section, étant saisie par un dispositif d'introduction dont la vitesse d'entrée dans la première section est constante au moins au moment de l'introduction de la navette, tandis qu'il est prévu dans le circuit de celle-ci, en amont du dispositif d'introduction, un système de commande du moment précis auquel la navette se présente à l'entrée de ce dispositif et qu'un cadenceur émet des signaux ajustés à la cadence du métier en vue de réguler son fonctionnement, le dispositif d'introduction occupant pratiquement la totalité de la courbe de renvoi située en amont de la première section, le système de régulation s'étendant sur la majeure partie de la seconde section du circuit de la navette, caractérisé en ce qu'au moins une partie de la section de retour (13, 113a, 113b, 113e) comprise entre les courbes de renvoi (12, 14) presente la forme d'un arc de cercle, ou relie les courbes de renvoi d'une manière non rectiligne et, en ce que le système de régulation (15, 115) s'étend en fait au-delà de la section de retour (13, 113,113a, 113b, 113c) et engage la navette dans un système d'entraînement par exemple par courroies disposé dans la ou les courbes de sortie de cette section de retour.
2. Métier à tisser à plat selon la revendication 1, caractérisé en ce que la section de retour (113) présente globalement la forme d'un arc de cercle.
3. Métier à tisser à plat selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'introduction comporte une courroie (18) entraînée par la pulsation à une vitesse qui varie entre une valeur inférieure, soit la vitesse d'introduction de la navette (16) imposée par le dispositif d'introduction (17, 24) et la vitesse d'entrée dans la section traversant la foule.
4. Métier à tisser à plat selon la revendication 3, caractérisé en ce que la vitesse du dispositif de commande (15,115) peut être réglée par rapport à sa valeur de base selon des paliers successifs de faible amplitude et en ce qu'il est prévu dans le circuit (113) de la navette, en amont de l'entraînement par courroie, un détecteur de passage (121) qui arrête un compteur horaire réagissant à un premier signal de passage de la navette, ce compteur permettant de commander la vitesse du système d'entraînement par courroie à une valeur directement proportionnelle à un signal de durée défini par le temps de passage de la navette.
5. Métier à tisser à plat selon la revendication 4, caractérisé en ce qu'un dispositif de freinage de la navette (122) est prévu en amont du détecteur de passage (121).
. 6. Métier à tisser à plat selon l'une des revendications 1 à 5, caractérisé en ce que le cadenceur est relié au vilebrequin du métier et en ce qu'il émet, dans une première position angulaire choisie du vilebrequin, un premier signal dicté par le régime du métier, en vue de modifier la vitesse du système d'entraînement par courroie, et, dans une deuxième position angulaire du vilebrequin, pour laquelle la navette (16) a quitté ledit système, un deuxième signal de retour à la vitesse de base.
7. Métier à tisser à plat selon la revendication 6, caractérisé en ce que le premier signal provoque immédiatement l'augmentation de la vitesse du système d'entraînement par courroie.
8. Métier à tisser à plat selon la revendication 6, caractérisé en ce que la vitesse du système d'entraînement par courroie peut être réglée par paliers, en ce que des détecteurs de passage de la navette (123-128) commandés par le premier signal du cadenceur sont répartis sur la courbe de renvoi de sortie (12), un palier de vitesse de la courroie étant assigné à chaque détecteur, l'augmentation de la vitesse de la courroie par rapport à sa valeur de base diminuant d'importance au fur et à mesure que l'on s'éloigne de l'entrée dans la section traversant la foule et en ce que le câblage de commande bloque au moins un des détecteurs (125-128) situés dans le sens du déplacement de la navette, quand un signal de détection est émis par un détecteur (124).
9. Métier à tisser à plat selon l'une des revendications 1 à 8, caractérisé en ce que la navette (16) est pourvue d'éléments (34,41, 50, 59, 60) assurant son guidage et la stabilisation de sa course dans la section (11) traversant la foule.
10. Métier à tisser à plat selon la revendication 9, caractérisé en ce que le peigne (36,42,48) est pourvu sur toute sa longueur de glissières de guidage (39,49, 51) qui interagissent avec les éléments de guidage (34,41, 50, 59, 60) de la navette (16).
11. Métier à tisser à plat selon l'une des revendications 1 à 10, caractérisé en ce que le système de commande (15) comporte un magasin dans lequel plusieurs navettes (16) sont stockées à l'entrée du dispositif d'introduction (17).
EP83111162A 1982-11-13 1983-11-08 Métier à tisser à plat avec une navette à pince circulant dans un circuit fermé Expired EP0109607B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111162T ATE22472T1 (de) 1982-11-13 1983-11-08 Flachwebmaschine mit auf geschlossener bahn umlaufendem greiferschuetzen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19823242121 DE3242121A1 (de) 1982-11-13 1982-11-13 Webmaschine fuer siebe und filze zur ausruestung von papiermaschinen und dergleichen
DE3242121 1982-11-13
DE3325294 1983-07-13
DE19833325294 DE3325294A1 (de) 1983-07-13 1983-07-13 Flachwebmaschine mit auf geschlossener bahn umlaufendem greiferschuetzen

Publications (2)

Publication Number Publication Date
EP0109607A1 EP0109607A1 (fr) 1984-05-30
EP0109607B1 true EP0109607B1 (fr) 1986-09-24

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EP83111162A Expired EP0109607B1 (fr) 1982-11-13 1983-11-08 Métier à tisser à plat avec une navette à pince circulant dans un circuit fermé

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DE (1) DE3366477D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762153A (en) * 1987-01-15 1988-08-09 Chuang Wu Chen Weaving loom with magnetic shuttle
DE59306482D1 (de) * 1992-02-28 1997-06-26 Dornier Gmbh Lindauer Vorrichtung zur Führung von Band- oder Stangengreifer in Webmaschinen
BE1029528B1 (nl) 2021-06-24 2023-01-30 Qmatex Bvba Weefmachine en methode voor het weven van meerlaagse stof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR357511A (fr) * 1900-01-01
FR782654A (fr) * 1933-12-14 1935-06-08 Perfectionnements au mécanisme d'insertion de trame des métiers à tisser
DE679808C (de) * 1937-08-04 1939-08-16 Sulzer Akt Ges Geb Webstuhl mit Fuehrung fuer die Schussfadeneintragmittel
FR1273563A (fr) * 1960-11-04 1961-10-13 Mécanisme à navettes pour métiers à tisser
DE1535561B1 (de) * 1964-12-01 1970-07-23 Oberdorfer Metalltuchfabrik F Verfahren zur Schuetzenfuehrung an Flachwebstuehlen
CH469837A (de) * 1967-12-08 1969-03-15 Sulzer Ag Führungselement für das Schussfadeneintragsorgan einer Webmaschine
FR2406014A1 (fr) * 1977-10-14 1979-05-11 Moessinger Sa Perfectionnements pour metiers a tisser
FR2421971A2 (fr) * 1978-04-04 1979-11-02 Moessinger Sa Perfectionnements pour metiers a tisser

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EP0109607A1 (fr) 1984-05-30
DE3366477D1 (en) 1986-10-30

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