Novel shaft sleeve of textile machinery

Abstract

The novel shaft sleeve for textile machinery consists of mandrel, bearing shell, conic inner ring, stepped sleeve, sealing part, balls separated and located with the holder, pin rollers located axially with pin roller locating ring, etc. The present invention has one group of balls and one group of pin rollers as the rolling bodies, cylindrical plus conic mandrel structure and the closed structure, so that it has less axial looseness, improved radial stress state of the mandrel, raised bending strength and less high speed heat release of rolling bodies. The novel shaft sleeve is suitable for use in high speed drawing frame and combing machine to result in raised cotton sliver quality.

Description

technical field [0001] The invention relates to a new shaft sleeve specially used for textile machinery. Background technique [0002] The shaft sleeves widely used in the cake machine and combing machine in textile machinery are the key components that determine the draft and traction quality of the sliver when pulling the sliver. The thickness and uniformity of the sliver depend on its quality. Therefore, There are high requirements on the rationality of the shaft sleeve structure design, the precision of the manufacturing quality and the sealing performance. In view of the existing shaft sleeve technology, it is easy to heat and burn hands, easy to leak oil, and the internal grease overflows to pollute the rubber roller and sliver. , make the bearing lose oil and wear, and then wear the mandrel, affect the quality of the sliver and other defects. The Chinese patent application number 200420110563.8 is named "Special Bushing for Textile Machinery". The steel ball structur...

AI Technical Summary

Problems solved by technology

However, it has been proved by practice that the improved shaft sleeve still cannot meet the requirements of continuous increase in the output speed of the biscuit machine and comber. For example, the output speed of the biscuit machine has increased from 200m / min to 600m / min, and the highest has reached 800-1000m / min. min, the speed of the comber increased from 160 nips / min to 400 nippers / min, the high-speed textile machinery is the development trend, but the current shaft sleeve still stays at the 200m / min speed level of the cake bar output in the 1960s. Increase the speed, the shaft sleeve will still have defects such as heat leakage, shaft head wear, bending deformation, large axial movement of the mandrel, which is only barely suitable for low-speed cake and combing machines, otherwise it will be due to the axial movement of the mandrel 1. The poor radial force of the steel ball affects the quality of the sliver. The thickness uniformity and fiber value of the sliver are not ideal. The fiber value of the sliver produced by the existing shaft sleeve is shown in Table 1 by Uster statistics.

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