CN2138005Y - Ultra-small inversion energy-saving air plasma cutting machine - Google Patents

Abstract

The novel energy-saving air plasma cutting machine is not required to be provided with a main transformer and high frequency and high voltage, and achieves the purposes of energy saving and material saving by adopting a super-small inversion energy-saving air plasma cutting machine. The device consists of a rectifying circuit, a control circuit and an instruction device. The traditional voltage transformation and current limiting mode is changed, namely, useless power produced in current limiting is reduced to invert and convert the useless power into useful power, and the useful power is superposed on cutting working voltage. The heat temperature of the idle work is completely eliminated. Therefore, the loading rate of the whole machine is increased.

Description

Miniature converting energy saving air plasma cutting machine

This is novel to relate to a kind of air plasma cutter, is the CUT of main frame with Superminiature energy-saving, rectification circuit specifically.

CUT serves as the cutting main frame with the transformer of heaviness for a long time, and striking can't be got rid of the cutting technique problem of high-frequency and high-voltage, because the fault rootstock of cutting machine and plasma arc cutting torch comes from the damage of puncture aspect, the damage of electric wiring comes from high-frequency and high-voltage, the 95% above source of damage of cutting torch do not become when coming from the high-frequency and high-voltage striking or striking not good and cause, the infiltration of high-frequency and high-voltage also is easy to cause the damage of the electronic device in the machinery equipment, and whole set equipment is damaged, and high-frequency and high-voltage also can be disturbed contiguous electronic equipment by power supply width of cloth blackberry lily, as computer, the work of microcomputer etc., be the cutting equipment of main frame in addition with the transformer, because of heaviness, volume is big, thus also very difficult moving of work-yard, and waste electric energy and material, iron core as transformer, the increases of copper wire material and casing etc., electricity decreases the iron loss as transformer, the idle work power that line loss and transformer are done etc.So for a long time, China in the program control field of cutting machine always slowly not before.

This novel purpose then is the problem at above-mentioned existence, has designed a kind of main transformer, high-frequency and high-voltage of need not, and adopts Superminiature energy-saving air plasma cutting machine to reach purpose energy-conservation, the joint material.It is to the noiseless damage of the equipment of any electronic instrument, and can with various microcomputers and the supporting use of program control numerical control device.

This new technique solution:

A kind of by rectification circuit, control circuit, the Superminiature energy-saving air plasma cutting machine that instruction device is formed, it is characterized in that city power supply A, B, the C three-phase connects the first end of inverter energy-saving device respectively, the end of inverter energy-saving device connects the silicon controlled positive terminal respectively, the silicon controlled negative pole end also is connected to auxiliary reclay contact K2-1, the first end doubling of inverter energy-saving device inversion end is connected, the end of inversion end connects silicon rectifier full-bridge diode, and (the full-bridge diode is that two series connection are divided into three groups, the end of inversion end connects the mid point end of respectively organizing series diode), silicon rectifier full-bridge two is extreme and receive auxiliary reclay K2-1, positive terminal is connected on the workpiece, each trigger electrode of silicon controlled connects the resistance R 1 of leading to circuits for triggering, R2, on the R3, resistance R 1, R2, R3 is by triode V1, V2, V3 is communicated in the control circuit.

The advantage that this is novel:

Basis is novel to make the Superminiature energy-saving appliance in the cutting machine change traditional transformation current-limiting mode, promptly utilize the idle work power of being done in the step-down current limliting carry out inversion convert to useful work be added to the cutting operating voltage in, the heat temperature that idle work is done is thoroughly eliminated, so the complete machine arcing time factor improves.This cutting machine volume is little, and is in light weight, integrated degree height, and structure optimization, no sky is disconnected and is pressed output, and energy-conservation, joint material plays the favorable linearity compensation to city's power supply, improves nearly 10 times than the general CUT life-span.

Fig. 1 is this novel electrical schematic diagram.

Below in conjunction with accompanying drawing to this novel being further described:

When instruction device sends signal, integrated packaging part IC-2(control circuit) enters work, integrated packaging part IC-1(rectification circuit) turn-on power and rectification provide the cutting operating voltage, because the idle work that the first end of this Superminiature energy-saving appliance is done for the step-down current limliting is a useful work by the inversion of inversion end, thereby make diffusing the removing of heat temperature in the body, having improved arcing time factor, all is the integrated packaging part of electronics in the whole machine body.Xia not in special feelings, in order to improve the safety factor of complete machine, each phase phase line of city's power supply is all infiltrated integrated packaging part IC-1, therefore, no matter under the situation of breaking mutually any, lacking, each control system and automatic cut-out that can both close automatically in each integrated packaging part are imported power supply.Safe comparative voltage is housed in the workpiece loop, and the central processing unit when workpiece voltage changes rising among the integrated packaging part IC-2 sends signal rapidly and cuts off the input power supply automatically, reaches the measure of the two poles of the earth protection.

Its course of work is: A, B, C, N inserted respectively in the three-phase and four-line supply network, and outer shell joint the earth, the three-phase power switch K101 that closes, gauge tap K102, power supply indicator D1 is luminous.This moment, complete machine was in the quiescent operation state, can cut as long as press cutting press button AN.Whole working is: in control circuit, press cutting button switch AN, make logical AND gate gate circuit C1 input become low level by high level, output upset control logic every circuit C2, gate circuit C3 make triode V4, V5 become conducting by ending, auxiliary reclay K1 adhesive, because auxiliary reclay K1 adhesive, make thyristor gating circuit be in conducting state, the not conducting as yet of controllable silicon this moment, because also there is not trigger voltage, wait cutting torch contact workpiece short-circuit arc diode V1, the anodal trigger voltage that just obtains of V2, V3 simultaneously.When controllable silicon is in conducting state, the whole conductings of main power circuit, beginning is cutting normally.Cutting finishes, decontrol press button AN, make gate gate circuit C1 become high level by low level, the upset of gate circuit C1 output level, gate circuit C1, the corresponding upset of gate circuit C3 output make triode V4, V5 be become by conducting and end, auxiliary reclay K1 dead electricity, thyristor gating circuit is opened a way dead electricity and is quit work, the major loop dead electricity, and complete machine quits work.Safety protective circuit is by auxiliary reclay K3; compositions such as K2; if this machine supply network neutral conductor in cutting process is offset or this machine self major loop breaks down; make cut workpiece and the earth produce potential difference; as long as potential difference voltage is greater than 20V; auxiliary reclay K3 adhesive at once; by auxiliary reclay contact K3-2 low level is sent into NAND gate gate circuit C2 input after the auxiliary reclay K3 adhesive; make the upset of gate circuit C2 output; triode V4; V5 is become by conducting and ends; make the thyristor gating circuit dead electricity; because controllable silicon triggerless voltage; so major loop no-output voltage; make cutting machine be forced to stop by force, provide reliable assurance life and device security protection.Auxiliary reclay K2 is connected between the neutral conductor and the controllable silicon anode, the centre is also by auxiliary reclay contact K1-1, the normal idle contact of K1-2, K1-3, and when this machine during in cutting, auxiliary reclay K1 normally-closed contact disconnects, auxiliary reclay K2 can't get electric, so auxiliary reclay K2 is failure to actuate.When this machine is in static state, because controllable silicon does not have the electric current of keeping and major loop is cut off, E point no-voltage, auxiliary reclay K2 also is failure to actuate, just in case thyristor break down (electric leakage or puncture) when complete machine is static, voltage and electric current will pass through auxiliary reclay contact K1-1, K1-2, K1-3 normally-closed contact and resistance R 4, the auxiliary reclay K2 coil and the neutral conductor produce the loop, auxiliary reclay K2 action is disconnected auxiliary reclay contact K2-1 normally-closed contact, cutting torch and main power source are isolated.Any one coil gets electronic work in middle relay K 2 or auxiliary reclay K3; the buzzer F1 sound that gives a warning immediately; the luminous demonstration of emergency warning lamp D2 simultaneously; in fact auxiliary reclay K2 plays a part safeguard protection when complete machine is static, and auxiliary reclay K3 plays a part safeguard protection when complete machine is in duty.This machine adopts thyristor as main power source, fairing.

Claims (2)

1, a kind of by rectification circuit, control circuit, the Superminiature energy-saving air plasma cutting machine that instruction device is formed, it is characterized in that city power supply A, B, C three-phase connect the first end of inverter energy-saving device respectively, the end of inverter energy-saving device connects the silicon controlled positive terminal respectively, the silicon controlled negative pole end also is connected to auxiliary reclay contact K2-1, the first end doubling of inverter energy-saving device inversion end is connected, the end of inversion end connects silicon rectifier full-bridge diode, silicon rectifier full-bridge diode cathode end is also received auxiliary reclay K2-1, and positive terminal is connected on the workpiece.Each trigger electrode of silicon controlled connects on the resistance R 1 of leading to circuits for triggering, R2, the R3, and resistance R 1, R2, R3 are communicated in the control circuit by triode V1, V2, V3.

2, Superminiature energy-saving air plasma cutting machine according to claim 1 is characterized in that the full-bridge diode is that two series connection are divided into three groups, and the end of inverter energy-saving device inversion end connects the mid point end of respectively organizing series diode.

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