EP0031853B1 - Multiple weft mechanism for a weaving machine - Google Patents

Multiple weft mechanism for a weaving machine Download PDF

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Publication number
EP0031853B1
EP0031853B1 EP79105381A EP79105381A EP0031853B1 EP 0031853 B1 EP0031853 B1 EP 0031853B1 EP 79105381 A EP79105381 A EP 79105381A EP 79105381 A EP79105381 A EP 79105381A EP 0031853 B1 EP0031853 B1 EP 0031853B1
Authority
EP
European Patent Office
Prior art keywords
yarn
weft
roller
thread
roller lever
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
EP79105381A
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German (de)
French (fr)
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EP0031853A1 (en
Inventor
Oskar Hübner
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to DE7979105381T priority Critical patent/DE2966149D1/en
Priority to AT79105381T priority patent/ATE4603T1/en
Priority to EP79105381A priority patent/EP0031853B1/en
Priority to US06/212,421 priority patent/US4382455A/en
Priority to SU803215948A priority patent/SU1071230A3/en
Priority to CS809153A priority patent/CS227321B2/en
Priority to BR8008471A priority patent/BR8008471A/en
Priority to JP18419180A priority patent/JPS56101948A/en
Publication of EP0031853A1 publication Critical patent/EP0031853A1/en
Application granted granted Critical
Publication of EP0031853B1 publication Critical patent/EP0031853B1/en
Expired legal-status Critical Current

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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 a multi-weft device for a weaving machine with a weft thread supply remaining outside the travel path, which multi-weft device contains a weft thread changing mechanism and a weft thread feed device connected upstream thereof, which have at least two parallel thread influencing elements, e.g. B. thread brakes and / or thread tensioner, of which the desired thread influencing elements according to a weft insertion program are coupled to a drive prior to each weft insertion, the drive of each thread influencing element including a cam with an associated spring-loaded roller lever for actuating the element.
  • thread brakes or thread tensioners for example, are assumed as weft influencing elements.
  • a sleeve which is axially displaceable and two is arranged on a continuously rotating drive shaft intended for driving thread tensioners and thread brakes Owns cams.
  • the cam sleeve is shifted in such a way that its two cams are placed under the two roller levers of the thread tensioner and the thread brake via which the desired weft thread is to be inserted.
  • this cam sleeve is difficult because it requires relatively high driving force due to the relatively large mass for its axial displacement. This driving force can, for. B. from a lying in the drive of the weft changing spring storage element with certainty and the sleeve does not perform its axial displacement movement sufficiently accurately and quickly.
  • the invention has for its object to provide a device which is particularly improved in this regard, that is to say an interchangeable member which operates reliably even at high speeds and is driven by the thread tensioner and thread brakes.
  • the invention consists in that a locking member is movable in the path of the roller lever to prevent the cam subsequent movement of the roller lever during stoppages of the associated influencing element.
  • each roller lever itself only has one in the associated drive cam, which does not need to be moved axially.
  • the roller lever can be lifted off the associated cam and rendered ineffective without the cam needing to be moved axially.
  • the associated thread tensioner or the associated thread brake for the following weft can be put into operation with the device according to the invention even at high speeds of 300-600 min-1 and more. The movements are carried out exactly.
  • the multi-weft device With the multi-weft device according to the invention, it can also be achieved particularly easily that the occasional wish can be taken into account to withdraw and enter the same weft yarn from two weft supply bobbins with constant change.
  • This is desirable if, for example, it is a simple yarn with slight defects, such as occasional, different yarn thickness. If such a yarn is only drawn off from a single weft bobbin, fabric defects occasionally appear when thicker portions of the yarn come to lie side by side in the fabric. If, on the other hand, two spools of the same thread type are drawn with constant change, defective thread spots are better distributed in the fabric, and visible fabric defects can then be avoided.
  • the machine contains a warp beam 2, a tensioning beam 3, via which the warp threads 4 coming from the warp beam run in the direction of arrow 5 through shafts 6 and a reed 7 to the attachment point 8. From here, the fabric 9 is guided to a fabric tree 11 and wound thereon.
  • the machine has two weft supply spools 12, 13 different types of thread, e.g. B. color, of which weft threads 15 or 16 are alternately entered via brakes 17, 18 and thread tensioner 19, 20 and a change organ 21 with the aid of a gripper projectile 22 in the shed.
  • the changing device 21 contains an interchangeable segment 23 which can be pivoted about a shaft 81 (FIG. 2) and contains two thread feeders 49a, b.
  • the shaft 81 carries a two-armed lever 71, 72.
  • an up and down movable drive rod 73 for the segment 23 engages, on the arm 72 a control rod 31.
  • the control rod 31 carries a connector 30; this is articulated at 34 to a locking plate 36 pivotable by 35.
  • the pin 35 is mounted in the frame 37 of the weaving machine.
  • roller levers 44, 44b On a continuously rotating drive shaft 41 during the weaving operation (FIGS. 4, 5), two cams for roller levers 44, 44b are fastened, which serve to drive the two weft brakes 17, 18.
  • one of these cams is visible and designated 42, likewise one of the roller levers pivotable by 43 is visible and designated 44.
  • the roller lever 44 carries a roller 45 which is pressed under the action of a compression spring 46 against the cam 42.
  • An arm 47 is attached to the roller lever 44, in the pivoting path of which the locking plate 36 can be moved.
  • cams are fastened on the shaft 41, which serve to drive a roller lever 52 or 52b and an associated thread tensioner 19 or 20.
  • a roller lever 52 or 52b and an associated thread tensioner 19 or 20.
  • One of these cams is shown and designated 51.
  • One of the associated roller levers is also shown and designated 52.
  • the roller lever 52 carries a roller 53 which cooperates with the cam 51.
  • the roller lever 52 is under the action of a tension spring 50 engaging at 55, by means of which the roller 53 is pressed against the cam 51.
  • the roller lever 52 has an arm 56, in the pivoting path of which the locking plate 36 can be moved.
  • the arms 47 of the roller levers 44, 44b are above the locking plate 36, while the arms 56 of the roller levers 52, 52b are arranged below the locking plate 36.
  • the locking plate 36 is thereby evenly loaded from both sides.
  • roller lever 44 is pivoted into the position 44a when the cam 42 is moved from the extended position in FIG. 4 to the position 42a shown in broken lines.
  • the roller lever 44 follows the cam 42.
  • Roller 45 moves into position 45a, arm 47 into the position 47a shown in dash-dot lines.
  • roller lever 52 follows cam 51 into position 52 a shown in broken lines.
  • Roller 53 goes to the dot-dash position 53a and arm 56 to the dot-dash position 56a.
  • the parts 17, 19 are operated according to the program at the following weft insertion, whereby their thread 15 can be entered in the compartment.
  • the parts 18, 20 are out of operation (locking their roller levers 44b, 52b).
  • the locking plate 36 is set back and forth by an electromagnet 61.
  • the electromagnet 61 receives current pulses according to the program or is de-energized, depending on which type of thread is desired for the following weft insertion.
  • the device can also be used for a changer with four or six different types of thread.
  • a correspondingly designed locking plate 36 and a corresponding number of reels must then be provided for the four or six thread brakes and thread tensioners.
  • the locking plate 36 can also be driven by a pneumatic or hydraulic drive cylinder 75 (FIG. 7) with a pressure piston 76.
  • a pneumatic or hydraulic drive cylinder 75 FIG. 7
  • a pressure piston 76 For example, in the case of an air jet loom weaving machine it is expedient to actuate the locking plate by means of compressed air, in the case of a water jet loom weaving machine it is actuated by means of pressurized water.
  • a reciprocating locking element 78 (Fig. 8) for the various roller levers can, for. B. can also be arranged on the edge 77 of the roller lever 44.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Surgical Instruments (AREA)

Abstract

The multiple pick system uses a drive for each control element. Each drive includes a roller lever which is pivotally mounted and driven by a cam mounted on the continuously rotating shaft of the machine. A locking member is movable into the path of the roller lever so as to prevent the roller on the lever from contacting the cam. The locking member serves to take out of operation the control elements for the weft yarn type which is not to be inserted while allowing the remaining control elements to be driven. The multiple pick system is especially suitable for high speeds.

Description

Die Erfindung betrifft eine Mehrschußeinrichtung für eine Webmaschine mit außerhalb des Wegfaches verbleibendem Schußfadenvorrat, welche Mehrschußeinrichtung ein Schußfaden-Wechselorgang und eine ihm vorgeschaltete Schußfaden-Zuführvorrichtung enthält, die mindestens zwei parallelliegende Faden-Beeinflussungselemente, z. B. Fadenbremsen und/oder Fadenspanner enthält, wovon vor jedem Schußeintrag die gewünschten Fadenbeeinflussungselementegemäßeinem Schußeintragsprogramm an einen Antrieb angekuppelt werden, wobei der Antrieb jedes Fadenbeeinflussungselements einen Nocken mit zugehörigem, unter Federwirkung stehendem Rollenhebel zur Betätigung des Elements enthält. Im folgenden sind als Schußfaden-Beeinflussungselemente beispielsweise Fadenbremsen oder Fadenspanner angenommen.The invention relates to a multi-weft device for a weaving machine with a weft thread supply remaining outside the travel path, which multi-weft device contains a weft thread changing mechanism and a weft thread feed device connected upstream thereof, which have at least two parallel thread influencing elements, e.g. B. thread brakes and / or thread tensioner, of which the desired thread influencing elements according to a weft insertion program are coupled to a drive prior to each weft insertion, the drive of each thread influencing element including a cam with an associated spring-loaded roller lever for actuating the element. In the following, thread brakes or thread tensioners, for example, are assumed as weft influencing elements.

Bei einer bisherigen Einrichtung der genannten Art (CH-A-332 438 = US-A-2 817 367) ist auf einer für den Antrieb von Fadenspannern und Fadenbremsen bestimmten, kontinuierlich rotierenden Antriebswelle eine Hülse angeordnet, welche axial verschiebbar ist und zwei Nocken besitzt. Während des Betriebs wird jeweils vor dem Schußeintrag die Nockenhülse so verschoben, daß ihre beiden Nocken unter die beiden Rollenhebel desjenigen Fadenspanners und der Fadenbremse gestellt sind, über welche der gewünschte Schußfaden einzutragen ist. Bei höheren Drehzahlen der Webmaschine von z. B. 300 min-' und mehr bereitet diese Nockenhülse Schwierigkeiten, weil sie infolge der verhältnismäßig großen Masse für ihre Axialverschiebung relativ hohe Antriebskraft erfordert. Diese Antriebskraft läßt sich z. B. von einem im Antrieb des Schußwechselorgans liegenden Feder-Speicherlementes nicht mit Sicherheit aufbringen und die Büchse führt ihre axiale Verschiebbewegung nicht genügend exakt und genügend rasch aus.In a previous device of the type mentioned (CH-A-332 438 = US -A-2 817 3 6 7), a sleeve which is axially displaceable and two is arranged on a continuously rotating drive shaft intended for driving thread tensioners and thread brakes Owns cams. During operation, the cam sleeve is shifted in such a way that its two cams are placed under the two roller levers of the thread tensioner and the thread brake via which the desired weft thread is to be inserted. At higher speeds of the weaving machine from z. B. 300 min- 'and more, this cam sleeve is difficult because it requires relatively high driving force due to the relatively large mass for its axial displacement. This driving force can, for. B. from a lying in the drive of the weft changing spring storage element with certainty and the sleeve does not perform its axial displacement movement sufficiently accurately and quickly.

Der Erfindung liegt die Aufgabe zugrunde, eine besonders in dieser Hinsicht verbesserte Einrichtung zu schaffen, also ein auch bei hohen Drehzahlen betriebssicher arbeitendes Wechselorgan mit Antrieb der Fadenspanner und Fadenbremsen.The invention has for its object to provide a device which is particularly improved in this regard, that is to say an interchangeable member which operates reliably even at high speeds and is driven by the thread tensioner and thread brakes.

Die Erfindung besteht darin, daß in den Weg des Rollenhebels ein Sperrglied bewegbar ist zur Verhinderung der Nocken-Folgebewegung des Rollenhebels während Stillsetzzeiten des zugehörigen Beeinflussungselementes.The invention consists in that a locking member is movable in the path of the roller lever to prevent the cam subsequent movement of the roller lever during stoppages of the associated influencing element.

Es läßt sich auf diese Weise vermeiden, daß immer dieselben Antriebsnocken aufgrund von Axialverschiebung einer Nockenhülse unter die anzutreibenden Rollenhebel geschoben werden. Vielmehr besitzt jeder Rollenhebel selbst einen nur im zugehörigen Antriebsnocken, der nicht axial verschoben zu werden braucht. Durch das Sperrglied kann der Rollenhebel von dem zugehörigen Nocken abgehoben und wirkungslos gemacht werden, ohne daß der Nocken axial verschoben zu werden braucht. Wie die Versuche ergeben, läßt sich mit der erfindungsgemäßen Einrichtung auch bei hohen Drehzahlen von 300-600min-1 und mehr ohne weiteres der zugehörige Fadenspanner bzw. die zugehörige Fadenbremse für den jeweils folgenden Schuß in Betrieb setzen. Die Bewegungen werden exakt ausgeführt.In this way it can be avoided that the same drive cams are always pushed under the roller levers to be driven due to axial displacement of a cam sleeve. Rather, each roller lever itself only has one in the associated drive cam, which does not need to be moved axially. By means of the locking member, the roller lever can be lifted off the associated cam and rendered ineffective without the cam needing to be moved axially. As the tests show, the associated thread tensioner or the associated thread brake for the following weft can be put into operation with the device according to the invention even at high speeds of 300-600 min-1 and more. The movements are carried out exactly.

Mit der erfindungsgemäßen Mehrschußeinrichtung läßt sich auch besonders leicht erreichen, daß dem gelegentlichen Wunsch Rechnung getragen werden kann, gleiches Schußgarn von zwei Schußfadenvorratsspulen unter ständigem Wechsel abzuziehen und einzutragen. Dies ist dann erwünscht, wenn es sich beispielsweise um einfacheres Garn mit leichten Fehlern, etwa gelegentlicher, unterschiedlicher Garndicke, handelt. Wird bei einem solchen Garn nur von einer einzigen Schußfadenspule abgezogen, so erscheinen gelegentlich Gewebefehler, wenn dickere Partien des Garnes im Gewebe nebeneinander zu liegen kommen. Wird dagegen von zwei Spulen gleicher Garnsorte unter ständigem Wechsel abgezogen, so verteilen sich fehlerhafte Garnstellen im Gewebe besser, sichtbare Gewebefehler können dann vermieden werden.With the multi-weft device according to the invention, it can also be achieved particularly easily that the occasional wish can be taken into account to withdraw and enter the same weft yarn from two weft supply bobbins with constant change. This is desirable if, for example, it is a simple yarn with slight defects, such as occasional, different yarn thickness. If such a yarn is only drawn off from a single weft bobbin, fabric defects occasionally appear when thicker portions of the yarn come to lie side by side in the fabric. If, on the other hand, two spools of the same thread type are drawn with constant change, defective thread spots are better distributed in the fabric, and visible fabric defects can then be avoided.

Weitere Merkmale ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit den Ansprüchen und der Zeichnung.Further features emerge from the following description of exemplary embodiments in conjunction with the claims and the drawing.

  • Fig. 1 ist eine Übersichtsdarstellung einer Webmaschine mit erfindungsgemäß ausgebildeter Mehrschußeinrichtung, in Draufsicht,1 is a top view of a weaving machine with a multi-weft device designed according to the invention,
  • Fig. 2 veranschaulicht in perspektivischer Darstellung die Mehrschußeinrichtung der Webmaschine,2 illustrates in perspective the multi-weft device of the weaving machine,
  • Fig. 3 zeigt in Draufsicht einige Antriebsorgane der Fadenbeeinflussungselemente,3 shows a top view of some drive elements of the thread influencing elements,
  • Fig. 4 ist ein Schnitt der wesentlichen Teile nach Linie IV-IV in Fig. 3,Fig. 4 is a section of the essential parts according to line IV-IV in Fig. 3,
  • Fig. 5 zeigt einen Schnitt der wesentlichen Teile nach Linie V-V in Fig. 3,Fig. 5 shows a section of the essential parts along line V-V in Fig. 3,
  • Fig. 6 eine gegenüber Fig. 3 abgewandelte Ausführungsform undFig. 6 an embodiment modified from Fig. 3 and
  • Fig. und 8 veranschaulichen Details von weiteren Ausführungsbeispielen.FIGS. 8 and 8 illustrate details of further exemplary embodiments.

Die Webmaschine 1 nach Fig. 1 enthält einen Kettbaum 2, einen Spannbaum 3, über welchen die vom Kettbaum kommenden Kettfäden 4 in Richtung des Pfeiles 5 durch Schäfte 6 und ein Riet 7 zu der Anschlgstelle 8 laufen. Von hier aus wird das Gewebe 9 zu einem Warenbaum 11 geführt und darauf aufgewickelt. Der Maschine sind zwei Schußfadenvorratsspulen 12, 13 verschiedener Fadensorte, z. B. Farbe vorgelegt, von denen wechselweise Schußfäden 15 oder 16 über Bremsen 17, 18 und Fadenspanner 19, 20 sowie ein Wechselorgan 21 mit Hilfe eines Greiferprojektils 22 in das Webfach eingetragen werden.1 contains a warp beam 2, a tensioning beam 3, via which the warp threads 4 coming from the warp beam run in the direction of arrow 5 through shafts 6 and a reed 7 to the attachment point 8. From here, the fabric 9 is guided to a fabric tree 11 and wound thereon. The machine has two weft supply spools 12, 13 different types of thread, e.g. B. color, of which weft threads 15 or 16 are alternately entered via brakes 17, 18 and thread tensioner 19, 20 and a change organ 21 with the aid of a gripper projectile 22 in the shed.

Die Wechselvorrichtung 21 enthält ein um eine Welle 81 (Fig. 2) schwenkbares, zwei Fadengeber 49a, b enthaltendes Wechselsegment 23. Durch die Fadengeber 49a, b wird jeweils ein Schußfaden, z. B. der Faden 15 dem Projektil 22 übergeben und anschließend in das Webfach eingetragen.The changing device 21 contains an interchangeable segment 23 which can be pivoted about a shaft 81 (FIG. 2) and contains two thread feeders 49a, b. A weft thread, e.g. B. the thread 15 passed to the projectile 22 and then entered in the shed.

Die Welle 81 trägt einen zweiarmigen Hebel 71, 72. Am Arm 71 greift eine auf und ab bewegbare Antriebsstange 73 für das Segment 23 an, am Arm 72 eine Steuerstange 31. Diese wird gemäß Pfeil 33 in Fig.3 hin und her verschoben, wenn das Wechselsegment 23 in Position bewegt wird. Die Steuerstange 31 trägt ein Anschlußstück 30; dieses ist bei 34 an eine um 35 schwenkbare Sperrplatte 36 angelenkt. Der Zapfen 35 ist im Gestell 37 der Webmaschine gelagert.The shaft 81 carries a two-armed lever 71, 72. On the arm 71, an up and down movable drive rod 73 for the segment 23 engages, on the arm 72 a control rod 31. This is moved back and forth according to arrow 33 in FIG the changing segment 23 is moved into position. The control rod 31 carries a connector 30; this is articulated at 34 to a locking plate 36 pivotable by 35. The pin 35 is mounted in the frame 37 of the weaving machine.

Auf einer während des Webbetriebes kontinuierlich rotierenden Antriebswelle 41 (Fig. 4, 5) sind zwei Nocken für Rollenhebel 44, 44b befestigt, welche für den Antrieb der beiden Schußfadenbremsen 17, 18 dienen. In Fig.4 ist einer dieser Nocken sichtbar und mit 42 bezeichnet, ebenso ist einer der um 43 schwenkbaren Rollenhebel sichtbar und mit 44 bezeichnet. Der Rollenhebel 44 trägt eine Rolle 45, welche unter der Wirkung einer Druckfeder 46 gegen den Nocken 42 gedrückt ist. An dem Rollenhebel 44 ist ein Arm 47 angebracht, in dessen Verschwenkweg die Sperrplatte 36 bewegt werden kann.On a continuously rotating drive shaft 41 during the weaving operation (FIGS. 4, 5), two cams for roller levers 44, 44b are fastened, which serve to drive the two weft brakes 17, 18. In Figure 4 one of these cams is visible and designated 42, likewise one of the roller levers pivotable by 43 is visible and designated 44. The roller lever 44 carries a roller 45 which is pressed under the action of a compression spring 46 against the cam 42. An arm 47 is attached to the roller lever 44, in the pivoting path of which the locking plate 36 can be moved.

Ferner sind auf der Welle 41 zwei Nocken befestigt, welche zum Antrieb je eines Rollenhebels 52 bzw. 52b und eines zugehörigen Fadenspanners 19 bzw. 20 dienen. In Fig. ist einer dieser Nocken dargestellt und mit 51 bezeichnet. Auch von den zugehörigen Rollenhebeln ist einer dargestellt und mit 52 bezeichnet. Der Rollenhebel 52 trägt eine Rolle 53, welche mit dem Nocken 51 zusammenarbeitet. Der Rollenhebel 52 steht unter der Wirkung einer bei 55 angreifenden Zugfeder 50, durch welche die Rolle 53 an den Nocken 51 gedrückt wird.Furthermore, two cams are fastened on the shaft 41, which serve to drive a roller lever 52 or 52b and an associated thread tensioner 19 or 20. In Fig. One of these cams is shown and designated 51. One of the associated roller levers is also shown and designated 52. The roller lever 52 carries a roller 53 which cooperates with the cam 51. The roller lever 52 is under the action of a tension spring 50 engaging at 55, by means of which the roller 53 is pressed against the cam 51.

Der Rollenhebel 52 besitzt einen Arm 56, in dessen Verschwenkweg die Sperrplatte 36 bewegt werden kann. Die Arme 47 der Rollenhebel 44, 44b sind oberhalb der Sperrplatte 36, die Arme 56 der Rollenhebel 52, 52b sind dagegen unterhalb der Sperrplatte 36 angeordnet. Die Sperrplatte 36 wird dadurch von beiden Seiten her gleichmäßig belastet.The roller lever 52 has an arm 56, in the pivoting path of which the locking plate 36 can be moved. The arms 47 of the roller levers 44, 44b are above the locking plate 36, while the arms 56 of the roller levers 52, 52b are arranged below the locking plate 36. The locking plate 36 is thereby evenly loaded from both sides.

Befindet sich vor einem Schußeintrag die Sperrplatte 36 in der in Fig.3 ausgezogen dargestellten Position, so wird beim Bewegen des Nockens 42 aus der in Fig. 4 ausgezogenen Stellung in die strichpunktiert dargestellte Position 42a der Rollenhebel 44 in die Position 44a verschwenkt. Der Rollenhebel 44 folgt dem Nocken 42. Rolle 45 gelangt dabei in die Stellung 45a, Arm 47 in die strichpunktiert dargestellte Position 47a. Entsprechend folgt beim We.iterlauf des Nockens 51 in die Position 51 a (Fig. 5) der Rollenhebel 52 dem Nocken 51 in die strichpunktiert dargestellte Position 52a. Rolle 53 geht in die strichpunktiert wiedergegebene Position 53a und.Arm 56 in die strichpunktiert wiedergegebene Position 56a.If the locking plate 36 is in the extended position shown in FIG. 3 before a weft insertion, the roller lever 44 is pivoted into the position 44a when the cam 42 is moved from the extended position in FIG. 4 to the position 42a shown in broken lines. The roller lever 44 follows the cam 42. Roller 45 moves into position 45a, arm 47 into the position 47a shown in dash-dot lines. Correspondingly, when the cam 51 continues to run into position 51 a (FIG. 5), roller lever 52 follows cam 51 into position 52 a shown in broken lines. Roller 53 goes to the dot-dash position 53a and arm 56 to the dot-dash position 56a.

Somit erhalten die am Rollenhebel 44 angekuppelte Fadenbremse 17 und der am Rollenhebel 52 angeschlossene Fadenspanner 19 Antrieb.Thus, the thread brake 17 coupled to the roller lever 44 and the thread tensioner 19 connected to the roller lever 52 receive drive.

Die Teile 17, 19 werden programmgemäß beim folgenden Schußeintrag betätigt, wodurch ihr Faden 15 in das Fach eingetragen werden kann.The parts 17, 19 are operated according to the program at the following weft insertion, whereby their thread 15 can be entered in the compartment.

Die Teile 18, 20 sind dabei außer Betrieb (Sperrung ihrer Rollenhebel 44b, 52b).The parts 18, 20 are out of operation (locking their roller levers 44b, 52b).

Wenn die Sperrplatte 36 aufgrund der Bewegung des Wechslersegmentes 23 in die in Fig. 3 strichpunktiert eingezeichhnete Stellung 36a bewegt wird, so sind die Arme 47, 56 der Rollenhebel 44, 52 durch die Sperrplatte 36 gesperrt. Die zu den Rollenhebeln 44b, 52b gehörenden Arme 47, 56 sind freigegeben. Damit bleiben die beiden Rollenhebel 44, 52, wenn die Nocken 42, 51 in die strichpunktiert dargestellte Stellung 42a, 51 a gedreht werden, in der in Fig. 4 und 5 ausgezogen dargestellten Position (Sperrung). Somit sind die zugehörige Fadenbremse 17 und der zugehörige Fadenspanner 19 während des folgenden Schußeintrages außer Betrieb, da sie keinen Antrieb erhalten. Dagegen erhalten die am Rollenhebel 44b angekuppelte Fadenbremse 18 und der am Rollenhebel 52b angeschlossene Fadenspanner 20 Antrieb, so daß der durch sie geführte Schußfaden 16 eingetragen werden kann.When the locking plate 36 is moved to the position 36a shown in broken lines in FIG. 3 due to the movement of the changer segment 23, the arms 47, 56 of the roller levers 44, 52 are locked by the locking plate 36. The arms 47, 56 belonging to the roller levers 44b, 52b are released. Thus, the two roller levers 44, 52, when the cams 42, 51 are rotated to the position 42a, 51a shown in broken lines, remain in the position shown in solid lines in FIGS. 4 and 5 (locking). Thus, the associated thread brake 17 and the associated thread tensioner 19 are out of operation during the following weft insertion, since they do not receive any drive. In contrast, the thread brake 18 coupled to the roller lever 44b and the thread tensioner 20 connected to the roller lever 52b receive drive so that the weft thread 16 guided through them can be inserted.

Bei der Bauart nach Fig. 6 wird die Sperrplatte 36 von einem Elektromagnet 61 in Hin- und Herbewegung versetzt. Der Elektromagnet 61 erhält programmgemäß Stromimpulse oder wird stromlos, je nachdem, welche Fadensorte für den folgenden Schußeintrag gewünscht wird.6, the locking plate 36 is set back and forth by an electromagnet 61. The electromagnet 61 receives current pulses according to the program or is de-energized, depending on which type of thread is desired for the following weft insertion.

Die Einrichtung kann auch für ein Wechselorgan mit vier oder sechs verschiedenen Fadensorten verwendet werden. Es muß dann eine entsprechend ausgebildete Sperrplatte 36 und eine entsprechende Anzahl von Rollenh,ebeln für die vier bzw. sechs Fadenbremsen und Fadenspanner vorgesehen werden.The device can also be used for a changer with four or six different types of thread. A correspondingly designed locking plate 36 and a corresponding number of reels must then be provided for the four or six thread brakes and thread tensioners.

Die Sperrplatte 36 kann auch durch einen pneumatischen oder hydraulischen Antriebszylinder 75 (Fig. 7) mit Druckkolben 76 angetrieben werden. Zum Beispiel ist bei einer Luftstrahleintrag-Webmaschine zweckmäßig, die Sperrplatte mittels Druckluft, bei einer Wasserstrahleintrag-Webmaschine sie mittels Druckwasser zu betätigen.The locking plate 36 can also be driven by a pneumatic or hydraulic drive cylinder 75 (FIG. 7) with a pressure piston 76. For example, in the case of an air jet loom weaving machine it is expedient to actuate the locking plate by means of compressed air, in the case of a water jet loom weaving machine it is actuated by means of pressurized water.

Ein hin und her bewegliches Sperrelement 78 (Fig. 8) für die verschiedenen Rollenhebel kann z. B. auch an der Kante 77 des Rollenhebels 44 angeordnet sein.A reciprocating locking element 78 (Fig. 8) for the various roller levers can, for. B. can also be arranged on the edge 77 of the roller lever 44.

Claims (5)

1. Multiple pick system for a weaving machine (1) with weft yarn supply (12, 13) remaining outside the shed, which multiple pick system comprises a weft yarn changer (23) and a weft yarn feed device preceding it which comprises at least two parallel yarn control elements (17 -20), e. g. yarn brakes (17, 18) and/or yarn tensioners (19, 20), of which the desired yarn control elements (17-20) are coupled to a drive (42, 51) according to a weft insertion program, before each weft insertion, the drive of each yarn control element (17-20) comprising a cam (42, 51) with respective roller lever (44, 52, 44b, 52b) under spring action (46, 56) for the actuation of the element (17-20), characterized in that a locking member (36, 78) can be moved into the path of the roller lever (44, 52, 44b, 52b) in order to prevent the cam-following movement of the roller lever (44, 52, 44b, 52b) during standstill times of the respective control element (17 -20).
2. System according to claim 1, characterized in that the lock member is a plate (36) - pivotable about an axle (35) - which can be moved selectively according to program into the path of a projection (47, 56) of at least one associated roller lever (44, 52, 44b, 52b).
3. System according to claim 2, characterized in that on both sides of the lock plate (36) in equal number projections (47, 56) of the roller levers (44, 52, 44b, 52b) of the control elements (17-20) are arranged, in such a way that during locking the lock plate (36) is pressurized on both sides.
4. System according to one of claims 1 -3, characterized in that the locking member (36) is controlled from the weft yarn changer (23).
5. System according to one of claims 1 -3, characterized in that the locking member (36) is controlled from an electromagnet (61).
EP79105381A 1979-12-27 1979-12-27 Multiple weft mechanism for a weaving machine Expired EP0031853B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE7979105381T DE2966149D1 (en) 1979-12-27 1979-12-27 Multiple weft mechanism for a weaving machine
AT79105381T ATE4603T1 (en) 1979-12-27 1979-12-27 MULTIPLE WEFT DEVICE FOR A WEAVING MACHINE.
EP79105381A EP0031853B1 (en) 1979-12-27 1979-12-27 Multiple weft mechanism for a weaving machine
US06/212,421 US4382455A (en) 1979-12-27 1980-12-03 Multiple pick system for a weaving machine
SU803215948A SU1071230A3 (en) 1979-12-27 1980-12-12 Weft pattern forming motion for shuttleless loom
CS809153A CS227321B2 (en) 1979-12-27 1980-12-22 Multi-weft apparatus for weaving looms
BR8008471A BR8008471A (en) 1979-12-27 1980-12-23 MULTIPLE PLOT INJECTOR SET FOR A TEAR
JP18419180A JPS56101948A (en) 1979-12-27 1980-12-26 Dual pick apparatus for loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79105381A EP0031853B1 (en) 1979-12-27 1979-12-27 Multiple weft mechanism for a weaving machine

Publications (2)

Publication Number Publication Date
EP0031853A1 EP0031853A1 (en) 1981-07-15
EP0031853B1 true EP0031853B1 (en) 1983-09-07

Family

ID=8186262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79105381A Expired EP0031853B1 (en) 1979-12-27 1979-12-27 Multiple weft mechanism for a weaving machine

Country Status (8)

Country Link
US (1) US4382455A (en)
EP (1) EP0031853B1 (en)
JP (1) JPS56101948A (en)
AT (1) ATE4603T1 (en)
BR (1) BR8008471A (en)
CS (1) CS227321B2 (en)
DE (1) DE2966149D1 (en)
SU (1) SU1071230A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458735A1 (en) * 1990-05-21 1991-11-27 Gebrüder Sulzer Aktiengesellschaft Weft thread tensioner for multiple weft projectile looms

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817367A (en) * 1953-10-17 1957-12-24 Sulzer Ag Weaving machine
CH332438A (en) * 1953-10-17 1958-09-15 Sulzer Ag Loom
DE1009568B (en) * 1954-04-03 1957-05-29 Sulzer Ag Loom
US3276482A (en) * 1963-04-10 1966-10-04 Jean Gusken Maschinenfabrik Ei Web thread changing device for web-loom
JPS504789B1 (en) * 1967-09-09 1975-02-24
CH480474A (en) * 1967-09-26 1969-10-31 Sulzer Ag Method for the weft-side monitoring of several weft threads on weaving machines and device for carrying out the method
US3511284A (en) * 1968-07-30 1970-05-12 North American Rockwell Filling selective device for shuttleless looms
DE1785076A1 (en) * 1968-08-07 1972-01-20 Abk Appbau Krefeld Gmbh Color control device for looms
JPS566977B2 (en) * 1973-05-29 1981-02-14
IT1043098B (en) * 1975-10-03 1980-02-20 Somet Soc Mec Tessile PRESENTER OF THE WEFT FOR YOU CONTINUOUS FEEDING WEAVING OF THE WEFT
JPS5428536Y2 (en) * 1975-10-05 1979-09-12

Also Published As

Publication number Publication date
CS227321B2 (en) 1984-04-16
SU1071230A3 (en) 1984-01-30
US4382455A (en) 1983-05-10
JPS56101948A (en) 1981-08-14
BR8008471A (en) 1981-07-14
DE2966149D1 (en) 1983-10-13
ATE4603T1 (en) 1983-09-15
EP0031853A1 (en) 1981-07-15

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