Weaving maching with modularized drive

Abstract

A weaving machine 1 comprises a lay beam 29 which by means of drive elements is movable between a rear position 29a, in which the introduction of the weft thread into a warp arrangement can be realized, and a front position 29b, in which a beat-up against a beating-up edge 32 of the respective introduced weft thread can be effected. The drive elements comprise two or more crankshaft parts rotatable along the width direction of the weaving machine and according to a common rotational center line 77. These are situated in stands comprising intermediate sections 59, 60, 61 and 62, which respectively also comprise a lay sword 24 which is mounted rotatably on a lay sword shaft 25 and is connected to a connecting rod belonging to the intermediate section. The intermediate section comprises at least one individual motor 66 turning the crankshaft part thereof. The weaving machine 1 comprises or is connected to a control system 64 provided with a rotary motion control unit 65 and arranged to control, via amplifying elements 67, the motors 66 of the intermediate sections for mutual synchronous rotary motion of the crankshaft parts of the various intermediate sections. The control system can comprise a computerized main control system 64 connected to a master motion control unit 65, which in turn is connected to servo amplifiers 67 forming part of the intermediate sections and connected to motors 66 in the form of servo motors provided with reduction gears. Should one wish to increase the synchronization or the coordination of the actions of the modules or intermediate sections upon the lay beam, one or more mechanical shafts 81′-83′ with lighter weight and small dimensions can be used. The invention enables substantial weight and space reductions to be made, inter alia by virtue of the fact that a large and heavy shaft with mountings and gearboxes can be avoided.

Dependencies are inferred from the claim text.