Blackout compensation system for circular weft knitting machine

Abstract

The invention relates to a blackout compensation system for a circular weft knitting machine. A controller comprises a control panel, an FPGA chip in an interface distribution board is connected to acontrol panel and is used for receiving a control instruction of the control panel, an output end of the FPGA chip is connected with a horn socket, and the horn socket is connected with a needle selector as an actuation mechanism through a data cascading wire. The blackout compensation system comprises a power failure detection circuit and an energy storage module, wherein the power failure detection circuit is connected with an AC220V input end, is used for detecting power supply conditions of the interface distribution board and is connected with a triggering end of the energy storage module; and an output end of the energy storage module is connected with a switch power supply, and the power failure detection circuit is started to emit a trigger signal to the energy storage module undera power failure condition, and power is supplied to the switch power supply for a short time. According to the blackout compensation system, a correct needle selection action can be synchronously output by the circular weft knitting machine under a blackout condition, and the knitted flower pattern can remain unchanged.

Description

technical field [0001] The invention relates to the technical field of textile machinery control devices, in particular to an over-temperature alarm device for a controller of a circular weft machine. Background technique [0002] Circular weft knitting machine, also known as circular weft knitting machine, is a knitting machine that arranges knitting needles on a circular needle cylinder to produce circular weft knitted fabrics, and controls the knitting process of the circular weft machine The controller is an extremely important part of it. [0003] The current controller of the circular weft machine is to arrange the interface distribution board at the embedded control panel to connect with the electromagnetic needle selector unit, to control the needle selector accordingly, and to cooperate with the jacquard device to realize the jacquard knitting action. Usually, when the system is abnormally powered off, the circular knitting machine loses power, but due to the effec...

AI Technical Summary

Problems solved by technology

Usually, when the system is abnormally powered off, the circular knitting machine loses power, but due to the effect of inertia, the mechanical movement will not come to a complete stop after about 0.5 seconds. At the same time, the needle selector of the actuator will also fail to output the correct needle selection action synchronously due to power loss. , that is, during the process from power failure to the circular knitting machine being disabled, abnormal knitting occurs, and the pattern that the circular knitting machine is knitting is destroyed

[0004] In addition, the power plug terminals of the interface distribution board may generate contact resistance at the terminal connection after machine vibration or long-term oxidation. Due to the large current on the terminal, high temperature will be generated in extreme cases, resulting in fire, such as This problem can be overcome by being able to detect it and brake it urgently, but how to brake without affecting the normal pattern of the circular weft machine and not being damaged is also a problem

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