Filament cooling device

Abstract

Inside a quench box 22 are formed a cooling tube housing chamber 41, an upper connection path 42, and a lower connection path 43. The cooling tube housing chamber 41 houses therein a plurality of cooling tubes 21 to oppose spinnerets 13 of a spinning beam 2, and these cooling tubes 21 are arranged to form two rows in the crosswise direction in a staggered manner. The cooling tube housing chamber 41 has, at the lower end portions of wall surfaces 41a and 41b, a first connection port 45 and a second connection port 46. The first connection port 45 is connected to an upper connection path 42 which is connected to a duct 60 and extends in the crosswise direction. The second connection port 46 is connected to a lower connection path 43 which is provided below the upper connection path 42, is connected to the duct 60, and extends along the lower part of the cooling tube housing chamber 41.

Description

technical field [0001] The invention relates to a filament cooling device for cooling a filament spun from a spin beam which spins molten material from a spinneret as a filament. Background technique [0002] In the melt spinning device described in Patent Document 1, a spinning beam spins a molten material from a plurality of spinnerets as filaments. Below the spinning beam, a plurality of cooling cylinders are arranged at portions facing the plurality of spinnerets. Here, the plurality of cooling cylinders are arranged in a zigzag pattern in one or two rows in the internal space (cooling cylinder housing chamber) of the cooling air supply box in accordance with the arrangement of the spinnerets. In addition, a duct is connected to the rear end of the inner space of the cooling air supply box, and the cooling air supplied from the duct to the inner space of the cooling air supply box is rectified by the filter forming the cooling cylinder, and then flows into the cooling c...

AI Technical Summary

Problems solved by technology

That is, only the cooling air flows into the inner space of the cooling air supply box from the rear, so the air volume of the cooling air that detours around the cooling cylinder and flows into the yarn running space from the front is higher than that of flowing into the yarn from the rear without detouring around the cooling cylinder. The air volume of the cooling air in the travel space is small, and the air volume of the cooling air flowing into the yarn travel space varies

In particular, when the cooling cylinders are arranged in two rows in a staggered manner, the cooling air is not easy to detour in front of the cooling cylinders constituting the row on the front side farther from the duct, and the cooling air flowing into the yarn traveling space Unevenness easily occurs in the air volume

And, if unevenness occurs in the air volume of the cooling air flowing into the yarn running space, the yarn running in the yarn running space is not uniformly cooled, and unevenness occurs in the thickness of the yarn, and the yarn Bar quality may degrade

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