Stepping linkage transmission mechanism for quilt sewing machine

Abstract

The invention provides a stepping linkage transmission mechanism for a quilt sewing machine. The stepping linkage transmission mechanism comprises an ascending and descending cross beam, a machine body and a roll shaft, wherein the two ends of the ascending and descending cross beam are respectively connected with synchronously rotating cams arranged on the side wall of the machine body arranged at the lower end of the ascending and descending cross beam through a connecting rod, the circle center of the cam is coaxially connected with a driving chain wheel, the driving chain wheel is connected with a motor output chain wheel, one side of a rocker arm always leans against one end of the connecting rod, the front end of a stepping wheel is provided with a stepping rocker arm, one end of the stepping rocker arm is rotationally connected with a center shaft of the stepping wheel, the stepping rocker arm and the rocker arm are movably connected through a telescopic connecting rod, an arc-shaped jacking block rotationally connected with the stepping rocker arm is arranged above the stepping wheel, the arc-shaped jacking block swings to and fro along with the stepping rocker arm for pushing the stepping wheel to rotate, and a transmission chain wound and connected onto the stepping chain wheel goes around two roll shaft chain wheels in an S shape so that the two roll shaft chain wheels oppositely rotate. The stepping linkage transmission mechanism has the advantages that the rotation of the cam is utilized, the ascending and descending cross beam is driven to act, meanwhile, the rolling shaft is driven to act by a linkage mechanism for conveying sewing objects, and the cooperation and the transmission are stable.

Description

technical field [0001] The invention relates to the field of quilt machines, in particular to a step-by-step linkage transmission mechanism of a quilt machine. Background technique [0002] Quilting machine is a kind of quilting machine, which is a textile machine used to sew linear patterns on mattresses, bedspreads, quilts, etc. The quilting machine includes equal length ascending (descending) supports independently constructed to move up and down by independent operating rods; multiple needles mounted on ascending (descending) supports, mounted under ascending (descending) supports The guide member is provided with a guide hole, and the needle support member carrying the machine needle is fixed on the ascending (descending) support member through the guide hole. Each support rod is provided with a presser foot and is elastically supported by a spring. Alternatively, the seam is structured so that the plurality of hooks mounted on the elongated longitudinal front and rea...

AI Technical Summary

Problems solved by technology

[0003] Most of the lifting supports of the existing quilting machines are controlled by the rotation of the cam. During its use, an external feeding mechanism is often required to cooperate with it to sew the quilt, but the external feeding mechanism is not connected to the cam. It is often difficult to achieve precise coordination, which affects the sewing effect of the quilt cover

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