Automatic weft protection device for shutdown of air-jet loom

Abstract

The invention discloses an automatic weft protection device for shutdown of an air-jet loom. The automatic weft protection device for shutdown of the air-jet loom comprises an air-jet loom control system, an air-jet loom body, a main spraying and weft insertion mechanism, an air compressor and a weft accumulator. The air-jet loom control system is used for sending a start signal and a shutdown signal to the air-jet loom body and the weft accumulator. The air-jet loom body is connected with the air compressor through a crank-link mechanism. An air delivery passage is arranged between the air compressor and a main spraying and weft insertion mechanism. A solenoid valve is arranged on the air delivery passageway, and opening and closing of the solenoid valve are controlled by the air-jet loom control system. The air delivery passageway is divided into a supply air channel and a residual air discharge branch after passing through the solenoid valve, the supply air channel is connected with a main spray nozzle of the main spraying and weft insertion mechanism, and the residual air discharge branch is communicated with the outside atmospheric environment. The automatic weft protection device for shutdown of the air-jet loom is compact in structure, high in automation degree and capable of automatically protecting wefts when the air-jet loom is shut down.

Description

technical field [0001] The invention relates to an air-jet loom, in particular to an automatic weft protection device for the air-jet loom when it is stopped. Background technique [0002] The original air-jet loom with its own air supply device, its own air supply device is a piston air compressor that is mechanically synchronized with the operation of the loom by means of a timing belt, etc. The piston air compressor and the air-jet loom The main jet weft insertion system is directly connected with the air supply pipe. When the loom is running normally, the piston air compressor supplies air to the main jet weft insertion system continuously to ensure the smooth progress of the weft insertion process. When the machine needs to be stopped due to faults such as abnormal weft insertion, the main electronic control system of the loom immediately sends out a stop signal. After receiving the stop signal, the weft feeder stops feeding yarn immediately, but the loom continues to r...

AI Technical Summary

Problems solved by technology

[0002] The original air-jet loom with its own air supply device, its own air supply device is a piston air compressor that is mechanically synchronized with the operation of the loom by means of a timing belt, etc. The piston air compressor and the air-jet loom The main jet weft insertion system is directly connected with the air supply pipe. When the loom is running normally, the piston air compressor supplies air to the main jet weft insertion system continuously to ensure the smooth progress of the weft insertion process. When the machine needs to be stopped due to faults such as abnormal weft insertion, the main electronic control system of the loom immediately sends out a stop signal. After receiving the stop signal, the weft feeder stops feeding yarn immediately, but the loom continues to rotate at a certain angle due to inertia. That is to say, there is a process of parking brake. In this process, the piston air compressor is mechanically synchronized with the operation of the loom, so it still has a compression stroke and continues to supply air to the main jet weft insertion system. The yarn feeder has stopped, so this continuation of the air supply will cause the weft yarn to be blown off at the main nozzle position

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