초록 ▼

A stopping mechanism includes a brake device for an insertion device and a detector for determining the position of the insertion device. The detector includes a sensor which subjects the insertion device to electromagnetic radiation in the microwave range and operates on the Doppler principle. The

A stopping mechanism includes a brake device for an insertion device and a detector for determining the position of the insertion device. The detector includes a sensor which subjects the insertion device to electromagnetic radiation in the microwave range and operates on the Doppler principle. The position of the insertion device is determined by counting the number of crossover points of the Doppler signal in relation to a reference position. The detector has a high degree of resolution and is particularly suitable for looms using gripper shuttles. It is also highly flexible in the location in which the sensor may be arranged in the stopping mechanism.

대표청구항 ▼

A catching mechanism for a weft thread insertion device of a weaving loom, comprising: a stopping channel including a receiving end for receiving said weft thread insertion device; braking means for stopping said insertion device in said stopping channel; and detector means for determining the posit

A catching mechanism for a weft thread insertion device of a weaving loom, comprising: a stopping channel including a receiving end for receiving said weft thread insertion device; braking means for stopping said insertion device in said stopping channel; and detector means for determining the position of the device in said stopping channel, said detector means including sensing means for subjecting the insertion device to an electromagnetic radiation signal in the microwave range and detecting a radiation signal reflected from said weft thread insertion device, said detector means operating on the Doppler principle to determine from the number of crossover points of the Doppler signal the position of the insertion device relative to a reference position.