EP0102515B1 - False shuttle loom with broken weft finder - Google Patents

False shuttle loom with broken weft finder Download PDF

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Publication number
EP0102515B1
EP0102515B1 EP83107433A EP83107433A EP0102515B1 EP 0102515 B1 EP0102515 B1 EP 0102515B1 EP 83107433 A EP83107433 A EP 83107433A EP 83107433 A EP83107433 A EP 83107433A EP 0102515 B1 EP0102515 B1 EP 0102515B1
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EP
European Patent Office
Prior art keywords
hand lever
coupling
harness
electric motor
drive
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
EP83107433A
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German (de)
French (fr)
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EP0102515A2 (en
EP0102515A3 (en
Inventor
Rudolf Schmidt
Wilhelm Hahn
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.)
Neue Baumwoll-Spinnerei und Weberei Hof AG
Original Assignee
Neue Baumwoll-Spinnerei und Weberei Hof AG
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Application filed by Neue Baumwoll-Spinnerei und Weberei Hof AG filed Critical Neue Baumwoll-Spinnerei und Weberei Hof AG
Priority to AT83107433T priority Critical patent/ATE23055T1/en
Publication of EP0102515A2 publication Critical patent/EP0102515A2/en
Publication of EP0102515A3 publication Critical patent/EP0102515A3/en
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Publication of EP0102515B1 publication Critical patent/EP0102515B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/06—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping
    • D03D51/08—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping stopping at definite point in weaving cycle, or moving to such point after stopping

Definitions

  • the invention relates to a projectile loom according to the preamble of patent claim 1.
  • Machine weaving breaks in the weft thread from time to time. This applies in particular to high-speed weaving machines, such as. B. projectile looms in which the weft thread is exposed to high stresses.
  • Modern projectile weaving machines have a thread monitor, which switches the machine off automatically when a weft break occurs.
  • the shaft mechanism is turned backwards by means of a weft search device so that the weft threads can be removed until the weaving error.
  • projectile weaving machines have a claw coupling which can be actuated by a hand lever and with which the shaft mechanism can be separated from the rest of the machine.
  • a drive for rotating the shaft mechanism backwards they have a handwheel, on the axis of which a gearwheel sits, which can be brought into engagement with a further gearwheel arranged on an axis of the shaft mechanism for coupling the handwheel to the shaft mechanism.
  • Weft search devices driven by an electric motor via an electric clutch are also known (e.g. from DE-A-2 222 151), but not in connection with projectile weaving machines of the type mentioned in the preamble of patent claim 1.
  • a disadvantage of such a projectile weaving machine equipped with a handwheel for turning the shaft mechanism backwards is that the reverse rotation of the shaft mechanism by hand is associated with an extraordinary expenditure of force, so that the operating personnel is physically overwhelmed, particularly when weft breaks occur frequently.
  • the invention has for its object to develop a projectile loom according to the preamble of claim 1 so that the backward rotation of the shaft assembly is easier to eliminate a weaving error.
  • the projectile weaving machine shown in FIG. 1 and generally designated 1 has a chain drive 2 which acts on a shaft 6.
  • Another chain drive 7 leads to a shaft mechanism 8 which is only shown in FIGS. 2 and 3 and which moves heald frames 12 in a known manner via a punch card or cam program.
  • the chain drive 2 can be uncoupled with the aid of a claw coupling 3, so that the entire shaft 8 is separated from the rest of the projectile weaving machine 1.
  • the claw coupling 3 is actuated via a pull rod 4 with the aid of a hand lever 5 which can be brought into three positions.
  • Position I is the engagement position and position 111 is the disengagement position.
  • an electric clutch 13 sits on the shaft 6 and is driven by an electric motor 14 with a backstop via a chain 15. Furthermore, an electric switch 16 is assigned to the hand lever 5, which switches to the passage of current when the hand lever 5 is moved from the position I to the position II or 111. When the switch 16 is closed by moving the hand lever 5, current is applied to the electrical clutch 13 and also to the switch 17. By actuating the switch 17, the electric motor 14 is also supplied with current.
  • a projectile weaving machine switches off automatically as a result of a thread break
  • the hand lever 5 is first moved from position I to position II after the machine has come to a standstill, as a result of which the electrical Coupling 13 connects the electric motor 14 to the shaft 6.
  • the shaft 6 and thus the shaft 8 is uncoupled from the remaining part of the weaving machine 1 via the claw coupling 3.
  • the electric motor 14 is equipped with a backstop
  • the shaft mechanism 8 is held in its respective position, so that the shafts 12 also remain in their respective positions and the weaving program cannot get mixed up.
  • the hand lever 5 can then be moved from position 111 back to position 11 because in this position the shaft mechanism 8 remains uncoupled until the disengaged parts of the claw coupling 3 have been rotated by 360 ° against one another.
  • the switch 17 is actuated so that the electric motor 14 is supplied with current. This then rotates the shaft mechanism 8 in reverse so that the last weft thread is exposed and can be pulled out. After the two disengaged parts of the clutch 3 have rotated by 360 ° against each other, which corresponds to the insertion of a weft thread, the clutch engages again, whereby the hand lever 5 is automatically brought back to the basic position 1. However, the switch 16 is also opened again, so that the clutch 13 and the electric motor 14 are de-energized again. Now you can either repeat the turning process or switch the loom on again.
  • the switch 17 is preferably a toggle switch, i. H. a switch that remains switched to continuity after tapping until it is de-energized.

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

Abstract

1. Projectile weaving machine comprising a harness uncouplable from the machine drive by a dog coupling, a hand lever for disengaging the dog coupling and a drive couplable to the harness for reverse turning thereof, characterized in that the couplable drive for reverse turning of the harness (8) consists of an electrical coupling (13) and an electric motor (14) with return stop and that associated with the hand lever (5) is an electrical switch (16) which in the disengagement position of the hand lever switches current to the electrical coupling (13) and to an electrical switch (17) preceding the electric motor (14) with return stop.

Description

Die Erfindung betrifft eine Projektilwebmaschine gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a projectile loom according to the preamble of patent claim 1.

Beim maschinellen Weben treten von Zeit zu Zeit Brüche im Schußfaden auf. Dies gilt insbesondere für schnellaufende Webmaschinen, wie z. B. Projektilwebmaschinen, bei denen der Schußfaden hohen Beanspruchungen ausgesetzt ist. Moderne Projektilwebmaschinen besitzen einen Fadenwächter, der beim Auftreten eines Schußfadenbruchs die Maschine sofort automatisch abschaltet. Zur Beseitigung des entstandenen Webfehlers wird das Schaftwerk mittels einer Schußsucheinrichtung rückwärtsgedreht, damit die Schußfäden bis zum Webfehler entfernt werden können. Projektilwebmaschinen besitzen hierzu eine durch einen Handhebel betätigbare Klauenkupplung, mit der das Schaftwerk von der übrigen Maschine abgetrennt werden kann. Weiterhin besitzen sie als Antrieb zum Rückwärtsdrehen des Schaftwerks ein Handrad, auf dessen Achse ein Zahnrad sitzt, welches zum Ankuppeln des Handrads an das Schaftwerk mit einem auf einer Achse des Schaftwerks angeordneten weiteren Zahnrad in Eingriff gebracht werden kann.Machine weaving breaks in the weft thread from time to time. This applies in particular to high-speed weaving machines, such as. B. projectile looms in which the weft thread is exposed to high stresses. Modern projectile weaving machines have a thread monitor, which switches the machine off automatically when a weft break occurs. In order to eliminate the weaving error that has arisen, the shaft mechanism is turned backwards by means of a weft search device so that the weft threads can be removed until the weaving error. For this purpose, projectile weaving machines have a claw coupling which can be actuated by a hand lever and with which the shaft mechanism can be separated from the rest of the machine. Furthermore, as a drive for rotating the shaft mechanism backwards, they have a handwheel, on the axis of which a gearwheel sits, which can be brought into engagement with a further gearwheel arranged on an axis of the shaft mechanism for coupling the handwheel to the shaft mechanism.

Es sind auch mittels Elektromotor über eine elektrische Kupplung angetriebene Schußsuchvorrichtungen bekannt (z. B. aus der DE-A-2 222 151), allerdings nicht in Zusammenhang mit Projektilwebmaschinen der im Oberbegriff des Patentanspruches 1 genannten Art.Weft search devices driven by an electric motor via an electric clutch are also known (e.g. from DE-A-2 222 151), but not in connection with projectile weaving machines of the type mentioned in the preamble of patent claim 1.

Nachteilig an einer solchen mit einem Handrad zum Rückwärtsdrehen des Schaftwerks ausgerüsteten Projektilwebmaschine ist, daß das Rückwärtsdrehen des Schaftwerks von Hand mit einem außerordentlichen Kraftaufwand verbunden ist, so daß insbesondere beim häufigen Auftreten von Schußfadenbrüchen das Bedienungspersonal körperlich überfordert wird.A disadvantage of such a projectile weaving machine equipped with a handwheel for turning the shaft mechanism backwards is that the reverse rotation of the shaft mechanism by hand is associated with an extraordinary expenditure of force, so that the operating personnel is physically overwhelmed, particularly when weft breaks occur frequently.

Der Erfindung liegt die Aufgabe zugrunde, eine Projektilwebmaschine gemäß dem Oberbegriff des Patentanspruches 1 so weiterzubilden, daß das Rückwärtsdrehen des Schaftwerks zum Beseitigen eines Webfehlers erleichtert ist.The invention has for its object to develop a projectile loom according to the preamble of claim 1 so that the backward rotation of the shaft assembly is easier to eliminate a weaving error.

Die Lösung dieser Aufgabe ergibt sich aus dem Kennzeichen des Patentanspruches 1.The solution to this problem results from the characterizing part of patent claim 1.

Ein Ausführungsbeispiel einer erfindungsgemäß abgewandelten Projektilwebmaschine wird nun anhand der beigefügten Zeichnungen näher erläutert.An embodiment of a projectile weaving machine modified according to the invention will now be explained in more detail with reference to the accompanying drawings.

In den Zeichnungen zeigen :

  • Figur 1 eine Stirnansicht einer bekannten Projektilwebmaschine ;
  • Figur 2 eine schematisierte Stirnansicht entsprechend Fig. 1 mit der erfindungsgemäßen Abwandlung ; und
  • Figur 3 eine teilweise Seitenansicht der Maschine von Fig. 2.
The drawings show:
  • Figure 1 is an end view of a known projectile loom;
  • Figure 2 is a schematic front view corresponding to Figure 1 with the modification according to the invention. and
  • FIG. 3 shows a partial side view of the machine from FIG. 2.

Die in Fig. 1 gezeigte und allgemein mit 1 bezeichnete Projektilwebmaschine besitzt einen Kettenantrieb 2, der auf eine Welle 6 wirkt. Ein weiterer Kettenantrieb 7 führt zu einem nur in den Fig. 2 und 3 dargestellten Schaftwerk 8, welches in bekannter Weise Webschäfte 12 über ein Lochkarten- oder Nockenprogramm bewegt. Der Kettenantrieb 2 kann mit Hilfe einer Klauenkupplung 3 abgekuppelt werden, so daß das gesamte Schaftwerk 8 vom übrigen Teil der Projektilwebmaschine 1 getrennt ist. Die Betätigung der Klauenkupplung 3 erfolgt über eine Zugstange 4 mit Hilfe eines Handhebels 5, der in drei Stellungen gebracht werden kann. Die Stellung I ist die Einrückstellung, und die Stellung 111 ist die Ausrückstellung. Wenn nach dem Ausrücken der Klauenkupplung 3 der Handhebel 5 auf die mittlere Stellung II gebracht wird, bleibt die Klauenkupplung 3 ausgerückt, schnappt aber nach einer Umdrehung wieder ein und kuppelt das Schaftwerk 8 wieder an. Auf der Welle 6 sitzt ein Zahnrad 9, das sich beim normalen Arbeiten der Webmaschine frei dreht. Zum Rückwärtsdrehen des abgekuppelten Schaftwerks 8 dient ein Zahnrad 10, welches von einem Handrad 11 angetrieben werden kann. Das Zahnrad 10 und das Handrad 11 können axial bewegt werden (in der Fig. 1 nach rechts), so daß das Zahnrad 10 mit dem Zahnrad 9 in Eingriff kommt. Wenn das Schaftwerk 8 von der übrigen Webmaschine 1 abgekuppelt ist, kann also durch Herausziehen und Drehen des Handrads 11 das Schaftwerk zurückgedreht werden.The projectile weaving machine shown in FIG. 1 and generally designated 1 has a chain drive 2 which acts on a shaft 6. Another chain drive 7 leads to a shaft mechanism 8 which is only shown in FIGS. 2 and 3 and which moves heald frames 12 in a known manner via a punch card or cam program. The chain drive 2 can be uncoupled with the aid of a claw coupling 3, so that the entire shaft 8 is separated from the rest of the projectile weaving machine 1. The claw coupling 3 is actuated via a pull rod 4 with the aid of a hand lever 5 which can be brought into three positions. Position I is the engagement position and position 111 is the disengagement position. If, after disengagement of the dog clutch 3, the hand lever 5 is brought into the middle position II, the dog clutch 3 remains disengaged, but snaps back in after one turn and couples the shaft mechanism 8 again. A gear 9 sits on the shaft 6 and rotates freely during normal weaving machine operation. A gearwheel 10, which can be driven by a handwheel 11, serves to turn the uncoupled shaft mechanism 8 backwards. The gear 10 and the handwheel 11 can be moved axially (to the right in FIG. 1) so that the gear 10 comes into engagement with the gear 9. When the shaft 8 is uncoupled from the rest of the weaving machine 1, the shaft can be turned back by pulling out and turning the handwheel 11.

Zu beachten ist dabei, daß es nötig ist, vor dem Abkuppeln des Schaftwerks 8 das Handrad 11 herauszuziehen und festzuhalten, weil nämlich sonst die in oberer Stellung befindlichen Schäfte 12 auf Grund der auf sie wirkenden Fadenspannung heruntergezogen werden und dabei das ganze Schaftbetätigungsprogramm in Unordnung gerät.It should be noted that it is necessary to pull out and hold the handwheel 11 before uncoupling the shaft mechanism 8, because otherwise the shafts 12 in the upper position will be pulled down due to the thread tension acting on them and the whole shaft actuation program will get messy .

Des weiteren ist zu beachten, daß zwischen dem Handrad 11 und der Welle 6 ein ganz beachtliches Untersetzungsverhältnis von etwa 1 : 10 vorhanden sein muß, da es sonst überhaupt nicht möglich ist, bei großen Webmaschinen das Schaftwerk von Hand rückwärtszudrehen.It should also be noted that between the handwheel 11 and the shaft 6 there must be a very remarkable reduction ratio of about 1:10, since otherwise it is not possible at all to turn the shaft mechanism backwards by hand in large weaving machines.

Bei der in Fig. 2 und 3 dargestellten erfindungsgemäßen Abwandlung sitzt auf der Welle 6 eine elektrische Kupplung 13, die von einem Elektromotor 14 mit Rücklaufsperre über eine Kette 15 angetrieben wird. Weiterhin ist dem Handhebel 5 ein elektrischer Schalter 16 zugeordnet, der auf Stromdurchgang schaltet, wenn der Handhebel 5 aus der Stellung I in die Stellung II bzw. 111 gebracht wird. Wenn der Schalter 16 durch Bewegen des Handhebels 5 geschlossen wird, wird Strom auf die elektrische Kupplung 13 und auch auf den Schalter 17 gegeben. Durch Betätigen des Schalters 17 wird auch der Elektromotor 14 mit Strom versorgt.In the modification according to the invention shown in FIGS. 2 and 3, an electric clutch 13 sits on the shaft 6 and is driven by an electric motor 14 with a backstop via a chain 15. Furthermore, an electric switch 16 is assigned to the hand lever 5, which switches to the passage of current when the hand lever 5 is moved from the position I to the position II or 111. When the switch 16 is closed by moving the hand lever 5, current is applied to the electrical clutch 13 and also to the switch 17. By actuating the switch 17, the electric motor 14 is also supplied with current.

Schaltet sich nun eine erfindungsgemäße Projektilwebmaschine infolge eines Fadenbruchs automatisch ab, so wird nach Stillstand der Maschine der Handhebel 5 von der Stellung I zunächst in die Stellung II gebracht, wodurch die elektrische Kupplung 13 den Elektromotor 14 mit der Welle 6 verbindet. Beim Weiterschwenken des Hebels aus der Stellung 11 in die Stellung 111 wird über die Klauenkupplung 3 die Welle 6 und damit das Schaftwerk 8 vom übrigen Teil der Webmaschine 1 abgekuppelt. Dadurch, daß der Elektromotor 14 mit einer Rücklaufsperre ausgerüstet ist, wird das Schaftwerk 8 in seiner jeweiligen Stellung festgehalten, so daß die Schäfte 12 ebenfalls in ihrer jeweiligen Stellung verbleiben und das Webprogramm nicht durcheinandergeraten kann. Der Handhebel 5 kann unmittelbar darauf aus der Stellung 111 wieder in die Stellung 11 gebracht werden, weil in dieser Stellung das Schaftwerk 8 so lange abgekuppelt bleibt, bis die ausgekuppelten Teile der Klauenkupplung 3 um 360° gegeneinander verdreht worden sind.If a projectile weaving machine according to the invention switches off automatically as a result of a thread break, the hand lever 5 is first moved from position I to position II after the machine has come to a standstill, as a result of which the electrical Coupling 13 connects the electric motor 14 to the shaft 6. When the lever is pivoted further from position 11 to position 111, the shaft 6 and thus the shaft 8 is uncoupled from the remaining part of the weaving machine 1 via the claw coupling 3. Because the electric motor 14 is equipped with a backstop, the shaft mechanism 8 is held in its respective position, so that the shafts 12 also remain in their respective positions and the weaving program cannot get mixed up. The hand lever 5 can then be moved from position 111 back to position 11 because in this position the shaft mechanism 8 remains uncoupled until the disengaged parts of the claw coupling 3 have been rotated by 360 ° against one another.

Nun wird der Schalter 17 betätigt, so daß der Elektromotor 14 mit Strom versorgt wird. Dieser dreht dann das Schaftwerk 8 rückwärts, so daß der letzte Schußfaden freigelegt wird und herausgezogen werden kann. Nachdem die beiden ausgekuppelten Teile der Kupplung 3 sich um 360° gegeneinander verdreht haben, was dem Einschießen eines Schußfadens entspricht, rastet die Kupplung wieder ein, wodurch der Handhebel 5 wieder automatisch in die Grundstellung 1 gebracht wird. Dabei wird aber auch der Schalter 16 wieder geöffnet, so daß die Kupplung 13 und der Elektromotor 14 wieder stromlos werden. Nun kann entweder der Rückdrehvorgang wiederholt oder die Webmaschine wieder angeschaltet werden.Now the switch 17 is actuated so that the electric motor 14 is supplied with current. This then rotates the shaft mechanism 8 in reverse so that the last weft thread is exposed and can be pulled out. After the two disengaged parts of the clutch 3 have rotated by 360 ° against each other, which corresponds to the insertion of a weft thread, the clutch engages again, whereby the hand lever 5 is automatically brought back to the basic position 1. However, the switch 16 is also opened again, so that the clutch 13 and the electric motor 14 are de-energized again. Now you can either repeat the turning process or switch the loom on again.

Der Schalter 17 ist vorzugsweise ein Tippschalter, d. h. ein Schalter, der nach dem Antippen so lange auf Stromdurchgang geschaltet bleibt, bis er selbst stromlos gemacht wird.The switch 17 is preferably a toggle switch, i. H. a switch that remains switched to continuity after tapping until it is de-energized.

Claims (2)

1. Projectile weaving machine comprising a harness uncouplable from the machine drive by a dog coupling, a hand lever for disengaging the dog coupling and a drive couplable to the harness for reverse turning thereof, characterized in that the couplable drive for reverse turning of the harness (8) consists of an electrical coupling (13) and an electric motor (14) with return stop and that associated with the hand lever (5) is an electrical switch (16) which in the disengagement position of the hand lever switches current to the electrical coupling (13) and to an electrical switch (17) preceding the electric motor (14) with return stop.
2. Projectile weaving machine according to claim 1, characterized in that the electrical switch (17) is a tip switch.
EP83107433A 1982-08-05 1983-07-28 False shuttle loom with broken weft finder Expired EP0102515B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107433T ATE23055T1 (en) 1982-08-05 1983-07-28 PROJECTILE WEAVING MACHINE WITH WEFT SEARCH DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828222206U DE8222206U1 (en) 1982-08-05 1982-08-05 PROJECTILE WAVING MACHINE WITH WOOF DETECTOR
DE8222206U 1982-08-05

Publications (3)

Publication Number Publication Date
EP0102515A2 EP0102515A2 (en) 1984-03-14
EP0102515A3 EP0102515A3 (en) 1984-12-12
EP0102515B1 true EP0102515B1 (en) 1986-10-22

Family

ID=6742512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107433A Expired EP0102515B1 (en) 1982-08-05 1983-07-28 False shuttle loom with broken weft finder

Country Status (3)

Country Link
EP (1) EP0102515B1 (en)
AT (1) ATE23055T1 (en)
DE (2) DE8222206U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616062A1 (en) * 1993-03-17 1994-09-21 Sulzer RàœTi Ag Weft breakage repair in dummy shuttle loams

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1390377A (en) * 1971-05-07 1975-04-09 Nuovo Pignone Spa Looms
IT1025047B (en) * 1974-10-18 1978-08-10 Fimtessile Spa Fabbrica Italia DEVICE FOR AUTOMATICALLY PERFORMING THE SEARCH OF BROKEN WEFT IN WEAVING LOOMS WITH THE ELIMINATION OF THE SAME WITH A FULLY OPEN PITCH AND RE-SETTING WITH THE REINFORCING MACHINE
DE2509665A1 (en) * 1975-03-06 1976-09-09 Lentz Textilmaschinen Gmbh Loom reverse drive system - for eg dobby or jacquard looms, enabling weaving faults to be rectified
DE2844285A1 (en) * 1978-10-11 1980-04-24 Vitex Gripper loom weft location - with motor control block and micro-switches to inch loom for opening to locate broken weft
DE2935507A1 (en) * 1979-09-03 1981-03-19 Jean Güsken GmbH & Co KG, 4060 Viersen Weft-break rectification in rapier loom - with self-acting pick finder initiated automatically on break detection

Also Published As

Publication number Publication date
DE8222206U1 (en) 1983-01-13
EP0102515A2 (en) 1984-03-14
DE3367114D1 (en) 1986-11-27
EP0102515A3 (en) 1984-12-12
ATE23055T1 (en) 1986-11-15

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