Production equipment of multi-H-shaped coarse-denier porous POY filament and manufacturing method thereof

Abstract

The invention discloses the production equipment of a multi-H-shaped coarse-denier porous POY filament and a manufacturing method thereof. The production equipment comprises spinning box bodies, a ring blowing cooling device, an oiling device, a spinning channel, a winding machine and a plurality of heating medium pipeline system devices used for melt conveying in a spinning process, wherein the spinning box bodies, the ring blowing cooling device, the oiling device, the spinning channel and the winding machine are successively arranged from top to bottom. The manufacturing method comprises the following steps of using the above production equipment to produce; making molten polyester melt pass through the melt pipes of the heating medium pipeline system devices to enter into each spinningbox body; after passing through a metering pump and a spinning component, extruding a nascent fiber; and passing through the ring blowing cooling device, the oiling device and the spinning channel, finally winding into a spinning cake. A temperature in the spinning box bodies can be rapidly increased, and the temperature can be accurately controlled, balanced and uniformed, product quality is ensured, energy consumption is reduced, and production efficiency and the abnormity degree of products are increased, which is good for rear channel processing.

Description

technical field [0001] The invention belongs to the technical field of synthetic fiber production, and in particular relates to a production equipment of multi-H-shaped coarse denier porous POY yarn and a preparation method thereof. Background technique [0002] Existing POY yarn production equipment is usually made up of main parts such as spinning box body, surrounding blower cooling device, oiling device, spinning tunnel and winding machine. At present, manufacturers of "one"-shaped POY yarns basically use rectangular hole-shaped spinnerets, but their irregularities are small (<65), and spinning with such spinneret holes, in the spinning process, especially in the drawing In the process, a large number of broken filaments and wool filaments will be produced, which is not conducive to the improvement of production and quality. [0003] The heat medium pipeline system device in the spinning equipment plays a key role in the production of POY yarn, providing a stable and...

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Problems solved by technology

At present, the system has the following disadvantages: 1. The heat medium pipeline system device includes 9 pipelines for melt transportation, which are respectively A, B, C, D, E, F, G, H and I pipelines, C and D in the figure , E, F, G pipelines, the small molecular substances in the gaseous heat medium can rise to the condensation tank well due to the relatively short pipeline distance; Moreover, it is hindered by the gaseous heat medium and the backflow liquid heat medium, and cannot well raise the small molecular substances in the gaseous heat medium to the condensation tank, so that the temperature of the pipelines C, D, E, F, and G is slightly lower than that of C, D, E, F, and G, resulting in spinning Uneven wire temperature, slow heating rate

2. When the system exhausts through the condensation tank: the exhaust time is long, the amount of discharged heat medium is large, and the number of additions of the heat medium furnace is increased; the effect is not ideal, and the temperature of each pipeline cannot be uniform

[0004] The function of the metering pump in the spinning box is to deliver the spinning melt quantitatively and evenly to the spinneret assembly, and to spray the tow through the spinneret holes to ensure uniform fineness of the tow. After the spinning assembly has been used for a period of time, the plate There will be sublimates on the surface and around the spinneret hole, so periodic cleaning is required. On the one hand, a large amount of waste silk will inevitably be consumed when cleaning at the normal metering pump speed; on the other hand, when the metering pump is stopped, the waste silk will be consumed. The consumption will be reduced, but at the same time, various failures will occur. The common failures are: component leakage, which will cause a longer suspension of spinning, seriously affecting the improvement of production efficiency; longer suspension time, increasing power consumption , Spinning and discharging increase the waste consumption of the melt, resulting in an increase in production costs; during the stoppage of spinning, the amount of melt is reduced, the delivery time of the melt for the spinning position of normal production increases, and the viscosity of the melt decreases greatly, resulting in spinning The melt quality is unstable, and at the same time, the pressure fluctuation before the pump will cause the product quality to be unstable.

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