Small Diameter Cylindrical Sewing Machine

Abstract

The invention discloses a small-diameter cylindrical sewing machine, which comprises a frame, a machine head arranged on the frame, and a cylinder located below the machine head; an eccentric installation through hole located above the axis of the cylinder is arranged in the cylinder, The eccentric installation through hole is equipped with a movable knife shaft cylinder, and the movable knife shaft cylinder is equipped with a rotary hook shaft; the movable knife shaft cylinder and the rotary hook shaft share a driving motor as power; the motor is connected to a transmission shaft, which is respectively connected to There are cam base and transmission assembly; the cam base is linked to a crank connecting rod assembly, and the crank connecting rod assembly is linked to the movable knife shaft; the transmission assembly is linked to the hook shaft; the clutch control assembly is used to control the clutch of the crank connecting rod assembly and the cam base , to realize intermittent thread trimming; in this way, through the structural design of the cylinder, moving knife shaft barrel, and hook shaft, and the moving knife shaft barrel and hook shaft share a driving motor as power, thereby effectively saving design space , which is conducive to the miniaturization design of the cylinder to meet the needs of small objects or small area processing and trimming.

Description

technical field [0001] The invention relates to the technology in the field of sewing machines, in particular to a small-diameter cylinder sewing machine. Background technique [0002] The cylindrical sewing machine in the prior art has a poorly designed thread trimming device, which leads to a large design space occupied by the thread trimming device, which is not conducive to the miniaturization design of the cylindrical sewing machine; therefore, if a small-sized cylindrical sewing machine is designed, It is difficult to achieve automatic thread trimming, which makes it difficult for existing sewing machines to perform automatic arc sewing and thread trimming on small objects and small-sized processing areas, or to automatically sew and thread trimming on cylindrical sewing workpieces with small diameters ;For small items, such as baby and children's clothing, after sewing, if the thread is trimmed manually, the work efficiency is very low, and if a larger cylinder sewing...

AI Technical Summary

Problems solved by technology

[0002] The cylindrical sewing machine in the prior art has a poorly designed thread trimming device, which leads to a large design space occupied by the thread trimming device, which is not conducive to the miniaturization design of the cylindrical sewing machine; therefore, if a small-sized cylindrical sewing machine is designed, It is difficult to achieve automatic thread trimming, which makes it difficult for existing sewing machines to perform automatic arc sewing and thread trimming on small objects and small-sized processing areas, or to automatically sew and thread trimming on cylindrical sewing workpieces with small diameters ;For small items, such as baby and children's clothing, after sewing, if the thread is trimmed manually, the work efficiency is very low, and if a larger cylinder sewing machine is used for processing, the length of the remaining thread is longer, and manual trimming is time-consuming and laborious. It is not conducive to the improvement of sewing processing quality

[0003] In addition, most of the existing thread trimming devices have the disadvantages of complex structure, high manufacturing cost, poor stability of thread trimming control, etc.

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