Control system in new type computer controlled sewing machine

Abstract

The present invention relates to a new-type computer sewing machine control system. It includes controller, control panel, treadle sensor, needle-stopping sensor, electromagnet drive circuit, motor and commutating circuit. It is characterized by that the described controller is composed of main controller, executive control module, communication circuit respectively connected with main controller and executive control module and switch power supply. Besides, said invention also includes a motor power drive circuit and a position sensor component and also provides the connection mode of above-mentioned all the portions.

Description

technical field [0001] The invention relates to a control circuit arranged on a sewing machine to control the operation of the sewing machine, in particular to a novel computerized sewing machine control system. Background technique [0002] In the prior art, the drive control of a traditional industrial sewing machine generally uses a clutch motor, which is an asynchronous motor that runs continuously after being powered on, and relies on the clutch to drive the sewing machine head to run. This drive control method has the advantages of large power consumption and bulky volume. , Noise, poor speed control and other shortcomings. [0003] Please refer to Fig. 1, the control circuit of another industrial sewing machine A10 driven by an electronic motor in the prior art consists of a controller A1, a control panel A2 connected to the controller A1, an induction motor A3, a clutch A4, three It is composed of automatic electromagnet A5, synchronous sensor A6 and pedal sensor A7...

AI Technical Summary

Problems solved by technology

Therefore, when designing, all electrical signals between the hot and cold circuits must be completed through an isolation circuit that can withstand high voltage. The design of a computer controller dedicated to a traditional industrial sewing machine requires the selection of many expensive isolation components for the hot and cold circuits (15~ 20), which greatly increases the cost of the product; and in the design of the circuit board, it needs to be equipped with a higher process to ensure that the insulation breakdown between the cold and hot circuits will not be caused by electrical abnormalities!

[0008] 2. It must be equipped with expensive CPU single-chip microcomputer, complex programming control software and circuit boards with high manufacturing process requirements

Therefore, usually when designing a traditional sewing machine computer controller, it is necessary to select a special MPU / MCU or DSP (such as TMS320LF24xx series, etc.) and compile a very complicated control program to realize these functions. Very high, and the requirements of the circuit board process are very high, which increases the difficulty of process manufacturing

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