Motion control structure of electronic pattern machine

Abstract

The invention provides a motion control structure of an electronic pattern machine. The motion control structure of the electronic pattern machine comprises a main control panel, a motion control panel, a motor driver, a coder, a motor, a position sensor, an approach switch, a pneumatic control valve and an execution component, and further comprises a complex programmable logic device (CPLD) logical circuit. A, B and Z signals output by the coder serve as input information of the CPLD logical circuit, the CPLD logical circuit uses the Z signals as a relative zero position of a main axis to count the number of A phase or B phase pulses, and generates three key interrupt signals including zero position pulse Z interrupt signals, fabric-input point interrupt signals and fabric-output interrupt signals, according to the numbers of pulses corresponding to a set fabric-input point and a set fabric-output point, the three key interrupt signals are input into the main control panel to participate in real-time control. According to the motion control structure of the electronic pattern machine, on the base of a control structure of an original pattern machine, the CPLD logical circuit is added to complete an interrupt output of key points of the pattern machine, the system completes the sewing function of the pattern machine in a quick response interrupt mode in real time, thus the purpose that timeliness of the system is improved is achieved, and then the whole performance of the pattern machine is improved.

Description

Technical field [0001] The invention relates to the technical field of intelligent sewing, in particular to a motion control structure of an electronic pattern machine. Background technique [0002] The electronic pattern machine is a three-axis industrial sewing machine that works in coordination. The three axes are the main axis Z that controls the up and down reciprocating movement of the needle and the XY axis that controls the front and back movement of the cloth frame in the horizontal plane. During the sewing process, the main shaft reciprocates in the vertical direction at a constant speed at the set speed: the needle moves from the highest point to the fabric feed point where the needle will plunge into the fabric to the lowest point of the needle, and then to the fabric exit point where the needle just leaves the fabric , And finally reached the highest point. The process of the needle from the cloth exit point to the highest point to the cloth feed point is the time p...

AI Technical Summary

Problems solved by technology

[0003] The control system judges the current position of the main shaft of the pattern machine by reading the real-time code of the main shaft encoder. At present, when the general query method reads the code value of the counter, the system will have a certain degree of delay, and at different spindle speeds, the system will The time delay cannot be determined. Therefore, this method cannot accurately locate the current position of the needle, and the speed of the spindle of the pattern machine is greatly limited.

Images