摘要:
In order to improve a dobby loom having a plurality of heddle frames, in particular having a changeover device for weft threads, according to the invention the heddle frames (4, 6, 8, 10) are each connected to a linear motor, such that by means of controlling the linear motor the heddle frame (4, 6, 8, 10) can be moved from an upper maximum position to a lower maximum position and vice versa. In one embodiment, the dobby loom has a plurality of warp thread presentation means, for example color control needles (18, 20), for the selective introduction of different weft threads (40, 42) into the warp shed and for changing the weft threads (40, 42). The loom comprises a control unit for controlling the linear motors, which control unit is designed to enable the control of a specified position of the heddle frame (4, 6, 8, 10) between the upper maximum position and the lower maximum position at a predetermined point in time. Said control unit has a sensor unit by means of which the position of each of the heddle frames (4, 6, 8, 10) can be detected continuously.
摘要:
The present invention relates to a method of forming, on needle looms, a bridge in ribbons particularly for up-down moving curtains using, to form the bridge on the ribbon, a warp yarn as a weft yarn. The cited warp yarn is heat preset to exhibit, on completion of the bridge, a hot shrinkage rate which is lower than that of the ribbon. The warp yarn is, moreover, taken from a first side of the ribbon over and across all the warp yarns in the cited ribbon, to engage with at least one warp yarn in the edge of the ribbon second side, thereafter the warp yarn is taken likewise back to the first side to engage with at least one warp yarn in the edge of the cited first side se as to form said bridge.
摘要:
A needle loom comprises a supporting structure (2), at least one forming head (3) of a textile product (P) installed on the supporting structure (2), at least two heddle frames (6) capable of intercepting a plurality of warp threads (O), at least one sickle (9) to bring at least two weft threads (T) transversely between the warp threads (O), at least two movable guides (11) adapted each to intercept one of the weft threads (T), actuator means (13) to move the movable guides (11) and change the weft threads (T) carried by the sickle (9), at least one needle (18), to temporarily retain at least one of said at least two weft threads (T) carried by the sickle (9), and a reed (20) to compact the weft threads (T) against the already formed textile product. The actuator means (13) comprises at least two electric motors (21), connected each with a respective movable guide (11), to move each guide in a manner independent of the others.
摘要:
The weft insertion needle (4) consists of a needle body (31) and a curved bracket (32) with two parallel legs (33) and a connecting section (35). The curved bracket is secured by the free ends of its legs to the needle body in such a way that there is a slot (34) between the needle body and the legs and a distance between the needle point and the connecting section (35) to accept weft threads (17, 18, 19). In a ribbon loom with such a weft insertion needle (4), the latter is arranged in such a way that the weft thread (18) to be inserted is held by the needle body and the slots (34) above and beneath the needle body (31) in relation to the plane of movement of the weft insertion needle (4) take the remaining weft threads (17, 19). Thus the weft threads which are not inserted do not float and are held after the insertion of the weft thread loop beside the warp threads (15, 16) to ensure proper securing thereof.
摘要:
Um aus einer Webmaschine mit einer Schussfadeneintragsvorrichtung (40) mit einer Schussnadel (42) und einem Schusswellenhebel (44), die mit der Hauptwelle (45) der Webmaschine mittels des Kurbeltriebs (13) wirkverbunden sind, einen verzögerten Eintritt ins das Webfach und einen verfrühten Austritt daraus zu ermöglichen wird vorgeschlagen, zwischen dem Kurbeltrieb (13) und dem Schusswellenhebel (44) ein Kniehebelsystem (46) anzuordnen und die Schussfadeneintragsvorrichtung (40) mit Schussnadel (42) weiterhin von der Schusswelle (47) über ein zweites Hebelsystem anzutreiben.
摘要:
Um eine Nadelbandwebmaschine - insbesondere für solche Anwendungen, bei denen besondere Anforderungen an die Einstellung der Schussfadenspannung gegeben sind - besser auszugestalten, wird vorgeschlagen, einen elektromechanischer Aktuator zum Antrieb der Schusseintragsnadel sowie eine Steuerungsvorrichtung vorzugesehen. Dabei ist der Aktuator so eingerichtet, dass die Endposition beim Schusseintrag und die Position bei zurückgefahrener Schusseintragsnadel und/oder der Startzeitpunkt der Bewegung der Schusseintragsnadel und/oder die Momentangeschwindigkeit der Bewegung der Schusseintragsnadel zumindest jeweils in einem bestimmten Bereich, mittels der genannten Steuerungsvorrichtung vorgewählt werden kann.