A Composite Shaft System for Vertical Feed Mechanism

Abstract

The invention relates to a combined shaft system for a vertical feeding mechanism. The combined shaft system comprises a sliding seat and a transmission shaft. The combined shaft system is characterized in that a fixing casing pipe extending downwards is arranged on the front face of the sliding seat; a transmission shaft is arranged in the fixing casing pipe through a bearing; the upper end of the transmission shaft is connected with a transmission driving device; and the lower end of the transmission shaft is connected with a chuck. The combined shaft system is formed by arranging the fixing casing pipe and a corresponding bearing supporting structure, the shaft system rigidity and the carrying capacity of a long-distance cantilever structure of the vertical feeding mechanism are effectively enhanced, the rotating accuracy is obviously improved, so that the circumferential jump of a workpiece in rotation is greatly relieved, and the combined shaft system is especially suitable for being used in optical fiber manufacturing equipment of a tower structure. When the combined shaft system enters the environment with the deposition working condition with corrosive gas in a sealed cavity, corrosion to a transmission shaft assembly can be avoided, and interference to gas in the cavity by the rotating shaft is reduced; and furthermore, the sealing structure of a feeding transmission mechanism and the sealed space can be greatly simplified, and leakage of the corrosive gas is reduced.

Description

technical field [0001] The invention relates to a composite shaft system for a vertical feed mechanism, which belongs to the technical field of optical fiber manufacturing equipment. Background technique [0002] In the field of optical fiber manufacturing in the communication industry, in order to avoid the influence of gravity on the processing quality of the workpiece, many processing equipment adopt a vertically arranged tower structure, and the feeding mechanism of the equipment is usually required to be able to move up and down in the vertical direction. Some processing equipment also requires the feed mechanism to be able to clamp the workpiece and rotate around its own axis while clamping the workpiece to move up and down. With the development of the technical level of the optical fiber manufacturing industry and the consideration of reducing production costs, it has become a development trend to manufacture larger-sized workpieces and use large-sized workpieces for ...

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Problems solved by technology

[0003] The transmission shaft system of the feed mechanism of the tower structure equipment is mostly a cantilever structure supported by the upper end and one end. When the axial direction becomes longer, or even the span of the cantilever exceeds 3 meters, the radial stiffness of the shaft will be significantly reduced. When the shaft When rotating with the workpiece, the rotation accuracy will be significantly reduced, which will seriously affect the processing quality of the workpiece

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