A kind of four-twist spindle upper spindle bar and its manufacturing method

Abstract

The invention belongs to the field of textile machinery, and discloses an upper spindle bar of a four-twisted spindle and a manufacturing method thereof. The upper spindle bar includes a support sleeve and a spindle bar provided with thread holes; the support sleeve includes a sleeve part and a flange part. The flange part is integrally connected to the top of the sleeve part, the outer diameter of the flange part is larger than that of the sleeve part, and the center of the flange part is provided with an axial circular through hole, and the center line of the sleeve part and the axial through hole is coaxial; the bottom of the spindle bar The end is formed into a cylindrical connection end, and the cylindrical connection end is connected with the axial circular through hole by interference fit; when manufacturing, the spindle rod and the support sleeve are processed first, and the diameter of the cylindrical connection end is smaller than the axial circular at room temperature. The inner diameter of the through hole is 3 to 4 wires larger; then heat the support sleeve to a temperature between 250 and 300°C, put it in an incubator for heat preservation, and then insert the cylindrical connecting end of the spindle rod into the axial circular through hole of the support sleeve. After the spindle rod is inserted, the support sleeve and the spindle rod are cooled to room temperature to form an interference fit connection and fixation, which reduces the manufacturing difficulty and has good coaxiality.

Description

technical field [0001] The invention belongs to the technical field of yarn finishing machinery, and in particular relates to a four-twist spindle upper spindle bar and a manufacturing method thereof. Background technique [0002] The structure of the existing four-twisted spindles includes two upper and lower spindles connected by a steering mechanism. The upper spindle of the upper spindle and the lower spindle of the lower spindle are each equipped with a twisting disc, and the lower spindle is passed by the main motor. A dragon belt centrally provides power drive, and the upper spindle is supported by the steering mechanism. Through the steering mechanism, the upper spindle is reversed relative to the lower spindle, so as to add four twists to the yarn in one turn. The coaxiality between the upper spindle bar and the lower spindle bar is easily deviated due to the influence of its own structure and the steering mechanism, resulting in easy shaking of the upper spindle ba...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the upper spindle bar of the existing four-twisted spindle is prone to deviation due to the coaxiality of the lower spindle bar, and to provide a four-twisted spindle upper spindle bar with good coaxiality and simple manufacture and its manufacturing method

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