Closed-loop digital control system of industrial sewing machine

Abstract

The invention relates to automatic control systems, in particular to a closed-loop digital control system of an industrial sewing machine. The closed-loop digital control system of the industrial sewing machine comprises an industrial sewing machine body which comprises a first swing mechanism, a second swing mechanism and a needle rod driving mechanism. The closed-loop digital control system of the industrial sewing machine is characterized in that a first driving device, a second driving device, the needle rod driving mechanism, a detecting unit and a control unit are further included, and the first driving device, the second driving device and a third driving device are all connected with the control unit through the detecting unit. Compared with the prior art, the closed-loop digital control system of the industrial sewing machine has the advantages that a closed loop is used for controlling the first swing mechanism, the second swing mechanism and the needle rod driving mechanism according to real-time working states, the step-out problem in industrial sewing is solved, the reject ratio of sewing products is lowered, and the reliability and the stability of the digital control system of the industrial sewing machine are greatly improved.

Description

technical field [0001] The invention relates to an automatic control system, in particular to a closed-loop digital control system for an industrial sewing machine. Background technique [0002] With the improvement of garment processing technology requirements and sewing machinery manufacturing level, industrial sewing machines with digital control system, such as electronic high-speed tacking machine, electronic high-speed round buttonhole machine, electronic high-speed flat buttonhole machine, electronic high-speed buttonhole Machines, electronic high-speed pattern machines and electronic high-speed template machines are more and more widely used. In these sewing textile equipment, needle position control is the key technology in sewing machinery. , front and rear reinforcement alignment stitch control, must require the machine to make the needle fast and accurate in place during the high-speed process. In the existing sewing and textile equipment, most of the control of...

AI Technical Summary

Problems solved by technology

In the existing sewing and textile equipment, most of the control of the needle position adopts the open-loop stepping motor drive control, and only the main controller of the industrial sewing machine controls the yaw X-axis stepping motor and the vertical pendulum separately through the pulse mode. Y-axis stepping motor, due to the inherent defects of stepping open-loop control, the main controller cannot get the actual speed value of the driving device, which makes the industrial sewing machine prone to out-of-step phenomenon when sewing various patterns at high speed. With the increase of the stepper motor, the probability of stepping motor out of step will also increase, and then it is easy to make mistakes in the needle position, which will lead to the production of defective products.

Especially in the occasions where the electromagnetic interference is relatively large, it is particularly obvious, resulting in poor pattern stitches of the sewing materials, low processing efficiency, and affecting the quality of processed products.

Images