Spiral oil inlet structure for rotating shuttle

Abstract

The invention discloses a spiral oil inlet structure for a rotating shuttle. The spiral oil inlet structure comprises a rotating shuttle base, a rotating shuttle shaft and the rotating shuttle mountedon the rotating shuttle shaft, a shaft sleeve sleeving the rotating shuttle shaft is fixedly arranged in the rotating shuttle base, an oil passing gap is formed between the inner wall of the shaft sleeve and the outer wall of the rotating shuttle shaft, and an oil pipe connector for supplying oil to the oil passing gap is installed on the shaft sleeve; an axial cavity is formed in the end, wherethe rotating shuttle is installed, of the rotating shuttle shaft, the inner end of the axial cavity is communicated with the oil passing gap through an axial oil inlet hole, and the outer end of the axial cavity is used for supplying the oil to the rotating shuttle; the inner wall of the axial cavity is provided with a first spiral oil conveying structure for supplying the rotating shuttle oil from the inner end to the outer end. A driving force is generated for the oil through a spiral oil inlet structure body in the rotating shuttle shaft, and the oil supply speed can be automatically adjusted according to the rotating speed.

Description

technical field [0001] The invention relates to the field of oil supply for rotary hooks of sewing machines, in particular to a screw oil feed structure for rotary hooks. Background technique [0002] The patent name is a rotary hook oil supply device, and the invention patent with the patent number of 201310016710.9 discloses a rotary hook oil supply device that realizes automatic oil supply through the high-speed rotation of the rotary hook shaft, including a sleeve, a rotary hook shaft, and a rotary hook shaft. The hook shaft runs through the shaft sleeve and can rotate at high speed, wherein the high-speed rotation of the hook shaft makes the oil pump mechanism on the shaft sleeve pump oil, and then supplies oil to the hook through the oil delivery mechanism on the shaft sleeve and the hook shaft , the tail of the rotary hook shaft is equipped with bearings, and there are circlips on both sides of the bearings, and the circlips fix the bearings to prevent the axial movem...

AI Technical Summary

Problems solved by technology

[0003] However, in the working process of the rotary hook, the demand for oil supply varies with the rotation speed. Too much oil supply will pollute the suture and sewing materials, and too little oil supply will cause increased wear, excessive noise, and even thread breakage. Bad trace etc.

In this patent, the simple oil pump formed by the cooperation of the injection plug spring and the groove cannot accurately control the oil delivery volume. Disadvantages of high cost and short service life

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