Feed dog assembly of separated sewing machine

Abstract

The invention provides a feed dog assembly of a separated sewing machine, and particularly relates to the technical field of sewing machine manufacturing. The feed dog assembly is provided with an up-down lifting motor and a front-back cloth feeding motor, the up-down lifting motor and the front-back cloth feeding motor apply a non-lateral swing source to feed dogs, the up-down lifting motor and the front-back cloth feeding motor indirectly act on the feed dogs to execute cloth feeding action, the front-back cloth feeding motor drives a rotating disc and then drives a connecting rod, and the connecting rod is movably connected to the eccentric position of the rotating disc. The connecting rod is movably connected with the feed dog connecting frame. The up-and-down lifting motor and the front-and-back cloth feeding motor are used for transmitting a swing source to the feed dog assembly, the feed dog assembly can be additionally arranged on a bottom thread mechanism and can be manufactured in a modularized mode to be used on various sewing machines in a matched mode, the mechanical structure of the sewing machine is more simplified, the sewing transmission efficiency is higher, and the high popularization value is achieved.

Description

technical field [0001] The present application proposes a cloth feed dog assembly of a separable sewing machine, and specifically relates to the technical field of sewing machine manufacturing. Background technique [0002] A sewing machine is a sewing equipment for sewing garments, bags, shoes and hats, and quilts. In a traditional sewing machine, the main shaft motor is connected to the upper main shaft, and the main shaft motor drives the upper main shaft to rotate, thereby driving the eccentric rotating wheel, the bevel gear and the needle bar crankshaft fixed to the upper main shaft to run at the same time. In the bottom thread sewing transmission mechanism, the eccentric rotating wheel drives the feed link and the lift link at the same time, the feed link drives the feed shaft through the swing seat assembly, and the lift link drives the lift shaft through the lift crank. Swing; the cloth feed shaft and the tooth-lifting shaft are arranged on both sides of the sewing ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of complex mechanical transmission structure of the feed dog existing in existing sewing machines, this application provides a separate feed dog assembly of a sewing machine with high transmission efficiency and low manufacturing difficulty, which has an up and down lifting motor of the feed dog assembly. And the front and rear cloth feeding motors exert non-lateral swing source on the cloth feeding dog, and the up and down lifting motor and the front and rear cloth feeding motor indirectly act on the cloth feeding dog to perform the cloth feeding action

Images