Cloth feeding mechanism of sewing machine

Abstract

The invention discloses a cloth feeding mechanism of a sewing machine and belongs to the technical field of sewing machines. By means of the cloth feeding mechanism, the problem that an original cloth feeding mechanism of the sewing machine is narrow in application range is solved. The cloth feeding mechanism of the sewing machine comprises a main shaft which is sleeved with a stitch length eccentric wheel, a first eccentric wheel is arranged on the outer side of the stitch length eccentric wheel, the first eccentric wheel is internally provided with a first sliding groove, the stitch length eccentric wheel can slide in the first eccentric wheel, the sliding direction in which the stitch length eccentric wheel slides in the first eccentric wheel is eccentrically arranged relative to the first eccentric wheel, and a cloth feeding connecting rod is arranged outside the stitch length eccentric wheel in a sleeving mode; a base is arranged on the main shaft in a sleeving mode, and the first eccentric wheel is arranged on the base in a sliding mode in the radial direction of the main shaft; a clutch mechanism is arranged between the base and the main shaft. Due to the arrangement of the clutch mechanism between the base and the main shaft, the inclination angle of the elliptical motion track of a cloth feeding dog can be conveniently adjusted by means of the cloth feeding mechanism.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, and relates to a cloth feeding mechanism of a sewing machine. Background technique [0002] Chinese utility model patent (authorized announcement number: CN204097699U, authorized announcement date: 20160114) discloses a cloth feeding mechanism for an overlock sewing machine. In its background technology, it is mentioned that the existing cloth feeding mechanism of overlock sewing machine includes main shaft, cloth feeding eccentric wheel, small eccentric wheel, eccentric wheel, first needle roller bearing, cloth feeding connecting rod, needle pitch eccentric wheel, fourth axis Pins, screws, sliders, outer ring gears, springs, feed cranks, feed shafts. Wherein the eccentric wheel, the first needle roller bearing, the cloth feeding connecting rod, the needle distance eccentric wheel, the fourth shaft pin, the screw, and the spring are assembled into a whole (part A) earlier, and a small sp...

AI Technical Summary

Problems solved by technology

In view of the improvement of the current sewing process requirements, a single elliptical inclined trajectory can no longer fully meet the sewing of different types of fabrics in the market

In this kind of cloth feeding mechanism, it is easy to have sewing defects such as misalignment of upper and lower layers of cloth, the same machine cannot satisfy knitting and weaving at the same time, the cloth does not wrinkle, or the cloth feeding efficiency is low.

Therefore, this kind of cloth feeding mechanism cannot adjust the inclination angle of the cloth feeding track during use, and its applicable range is narrow

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