Water-blocking yarn releasing device for optical cable and yarn releasing method thereof

Abstract

The invention relates to a water-blocking yarn releasing device for an optical cable and a yarn releasing method thereof. The device comprises a compression nut, a compression spring, gland dies, endpart baffle rings, support rods, a yarn barrel seat and a yarn releasing shaft, wherein the yarn releasing shaft and the two support rods are fixed on the yarn barrel seat in an eudipleural mode, thetwo support rods at the left side and the right side are symmetrically arranged at both sides of the yarn releasing shaft, the end part baffle ring is arranged at the extension end part of the yarn releasing shaft, the end parts of the two support rods extending from each side are connected with the gland die in a penetrating way, the compression spring and the compression nut are arranged at theouter side end of the support rod which is connected with the gland die in the penetrating way, and the compression nut is screwed to press the compression spring, thereby causing the gland dies to betightly support against the end part baffle ring at the corresponding side. The yarn releasing method of the device comprises the following steps: installing a water-blocking yarn coil on the yarn releasing shaft; causing a tensile body to penetrate through the yarn releasing shaft; regulating the tension of water-blocking yarns; starting corresponding production equipment; moving the tensile body to drive the water-blocking yarns to ensure that the water-blocking yarns are uniformly and spirally wound at the periphery of the tensile body. The method has the advantages that the water-blockingyarns at the circumferential direction of the tensile body are uniformly distributed and have favorable water blocking effect.

Description

technical field [0001] The invention relates to a water-blocking yarn used as a water-blocking function in an optical cable, in particular to a water-blocking yarn unwinding device for an optical cable and a yarn unwinding method thereof. Background technique [0002] The structure of the cable is as figure 1 As shown, the surface of the central tensile body, the surface of the inner sheath, and the surface of the cable core in the optical cable are usually filled with water-blocking yarn, and the principle of water-blocking yarn swelling with water is used to block water on the cable. [0003] But so far, there is no special equipment for placing the water-blocking yarn in the production of optical cables. When placing the water-blocking yarn, most optical cable manufacturers use such as figure 2 , image 3 In the shown manner, the water-blocking yarn roll 51 is placed on a water-blocking creel 53, and then the water-blocking yarn 4 on the water-blocking yarn roll 51 is ...

AI Technical Summary

Problems solved by technology

[0004] In this way of placing the water-blocking yarn, the water-blocking yarn can only be placed parallel to one side of the tension body, and fills in a certain part of the gap between the loose tube and the central tension body. The water-blocking yarn is unevenly distributed and cannot play a role. Water blocking in the circumferential direction of the tensile body, the larger the outer diameter of the tensile body, the worse the water blocking effect

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