Melt-spinning yarn breaking prompt system

Abstract

The invention provides a melt-spinning yarn breaking prompt system which comprises a spray nozzle filled with a melt, wherein an infrared light source is arranged in the spray nozzle; a reflecting coating is arranged on the inner wall of the spray nozzle; the melt sprayed out from the spray nozzle is wound by a winding barrel tube after condensed; a first round blocking piece and a second round blocking piece are arranged at two ends of the winding barrel tube respectively; and an infrared induction probe for detecting infrared rays is arranged on the first blocking piece and electrically connected with a monitoring circuit. According to the melt-spinning yarn breaking prompt system, the melt structure similar to an optical fiber is utilized, the melt is used for transmitting the infrared rays emitted by the infrared light source, and the infrared induction probe is used for detecting light rays emitted from the melt, so that whether the melt is broken can be judged very well.

Description

technical field [0001] The invention relates to the field of melt spinning monitoring equipment, in particular to a prompting system for melt spinning broken filaments. Background technique [0002] One of the main forming methods of melt spinning chemical fibers, referred to as melt spinning. The main varieties of synthetic fibers such as polyester, nylon and polypropylene are produced by melt spinning. The main features of melt spinning are high winding speed, no need for solvents and precipitants, simple equipment, and short process flow. Fiber-forming polymers that have a melting point below their decomposition temperature and can be melted to form a thermally stable melt can be formed by this method. The preparation of chemical fibers is usually made of natural or synthetic polymers or inorganic substances into a spinning melt or solution, then filtered, metered, extruded from a spinneret (plate) into a liquid stream, and then Solidified into fibers. The fiber at th...

AI Technical Summary

Problems solved by technology

[0003] Since the liquid fine stream needs to bear its own gravity and the force of the cooling wind during the cooling process, the primary fiber is prone to breakage. Since the primary fiber part is not solidified, and there are other spinnerets in the cooling space, Once broken, the broken fibers are easily entangled with other primary fibers, causing the entire device to be stuck

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