Silk yarn stretching device of polypropylene fiber yarn spinning machine

• Main Authors: SHEN JINGRONG, SHEN ZUOFENG, MENG QINGQIN, SHEN ZHENG, LI CHUNBIN, ZHU HONGZHU
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• Subjects: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The utility model discloses a polypropylene fiber yarn spinning machine yarn stretching device which comprises a machine frame, and a first differential roller set, a second differential roller set, a third differential roller set, a first heat preservation box, a fourth differential roller set, a second heat preservation box and a fifth differential roller set are sequentially arranged on the side face of the machine frame in the yarn conveying direction. The first heat preservation box and the second heat preservation box are of a totally-closed box body structure. The temperature control device has the beneficial effects that the temperature is accurately controlled in the polypropylene filament stretching process, the thermal motion of macromolecules of the polypropylene filaments is facilitated, the orientation and crystallization are facilitated, the strength of the polypropylene filaments is increased, the elongation is reduced, and meanwhile, the length of the whole production line is reduced. 本实用新型公开