Device for transmitting signals of a yarn monitor to a control circuit of a spinning location of an open-end spinning machine
US5950411A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H13/1633
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for transmitting yarn monitor signals to the control circuit of an open-end spinning station for determining whether a yarn spun by the spinning station is being drawn off or whether the yarn travel has been interrupted so that, in case of a yarn break, the infeed of the sliver into the spinning station is interrupted. Defects in electronic components in the circuit of the yarn monitor or in the sensor can result in a continuous yarn traveling signal to the control circuit of the spinning station despite a yarn break. The present invention therefore provides a receiver (5') for contactless receiving the yarn signal of the monitor and an oscillator (16) which can be actuated and deactuated based on the receiver output signal. An integrated circuit (22) is connected between the receiver and the oscillator (16) for generating and maintaining an actuating signal to the oscillator for generating oscillations thereby, and an alternating-voltage coupling (20) is connected between the oscillator and the control circuit of the spinning station for transmitting only an alternating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.