JPS62106978U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a schematic diagram showing an embodiment of the present invention, FIG. 3 is a flowchart showing control details, and FIG. 4 is a time chart showing operation timing. 2... Drum, 3... Winding guide, 5... Locking body, 6... Electromagnetic actuator, 8... Weft insertion nozzle, 10... Switching circuit, 11... Rewinding detector, 12... Counter , 13... Angle sensor, 14... CPU, 16... RAM.

Claims (1)

[Scope of utility model registration request] The weft W is wound around the drum 2 by a winding guide 3 that relatively rotates around the drum 2, and a locking body 5 arranged on the weft insertion nozzle 8 side of the drum 2 is driven by an electromagnetic actuator 6 to extract it from the drum surface. In this fluid injection type, the weft yarn W is unwound from the drum 2 while being inserted by the fluid jet from the weft insertion nozzle 8, and the weft yarn W is stopped by being plunged into the drum surface and the weft insertion is completed. In a loom, a rewind detector 11 detects the passage of the weft W from the drum 2 each time the weft W is unwound once and outputs a rewind detection signal, and a measured value of the rewind timing for a predetermined number of rewinds. a reference timing storage means for storing a reference timing based on the previous weft insertion, a period setting means for setting a predetermined period based on the reference timing stored in the storage means up to the previous weft insertion, and rewinding during the set period. 1. A weft insertion length regulating device for a fluid jet loom, comprising a plunge control means for thrusting a locking body 5 into a drum surface via an electromagnetic actuator 6 based on a detection signal.