Apparatus for controlling fluid injection pressure of an auxiliary nozzle in a jet loom

摘要

To provide an apparatus for controlling fluid injection pressure of an auxiliary nozzle (2a-2e, 3a-3e, 4a-4e. 5a-5e, 6a-6e) in a jet loom, which is simple in construction requiring only a small space for installation and saves fluid consumption. The apparatus is adapted for use in a jet loom and has at least one weft detector (32-36), a plurality of auxiliary nozzles (2a-2e, 3a-3e, 4a-4e. 5a-5e, 6a-6e), a fluid supply reservoir (13) from which fluid under pressure is supplied to each of the auxiliary nozzles (2a-2e, 3a-3e, 4a-4e. 5a-5e, 6a-6e) through conduit lines (16-20) each having a first electromagnetically-operated valves (27-31), and a controller (26) for controlling the operation of the valves (27-31), wherein the apparatus includes a second electromagnetically-operated valve (37-41) provided in a bypass line (42-46) bypassing the main line and the operation of the second valve (37-41) is controlled by the controller (26) according to the information of time at which the leading end of each inserted weft (Y) has arrived at a predetermined position along weft flying passage in a warp shed of the loom.