CN207139076U - A kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine and its circuit - Google Patents

Abstract

It the utility model is related to inverter type welder technical field; concretely it is a kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine and its circuit; the utility model is controlled by single-chip microcomputer; the function of means butt welding machine on the basis of hardware circuit plus software is strengthened; when the design of protection circuit; both the salvo of hardware had been used; also the monitoring and protection of software are added; on preceding control panel; numeral method function and light emitting diode indicator function are added, plays warning and the purpose reminded；In addition the utility model is also additionally arranged the numeral method function of a display magnitude of voltage, can show floating voltage numerical value in the unloaded state, then can be with real-time display weldingvoltage output valve in welding process.Possess the multi-functional features such as manual electric arc welding, DC argon arc welding and DC pulse argon arc welding while the utility model is rational in infrastructure, function admirable, performance parameters, universal compatibility are high, reliability is high.

Description

A kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine and its circuit

Technical field

Inverter type welder technical field is the utility model is related to, is concretely a kind of monolithic processor controlled more work(of IGBT single tubes Can argon arc welding machine and its circuit.

Background technology

The sales volume of argon arc welding machine is very big, is widely used.But welding machine quality can be influenceed by very many factors, such as wind Road design, board design, control circuit, making industry etc., these factors eventually influence the competitiveness of product in market.

At present, on domestic and international market, the rated current of contravariant argon arc welding machine is usually 120 ~ 500A level.For this For class welding machine, if design is not quite reasonable, easily there is problems with：1）Arcing time factor does not reach expection.Reason：Welding machine work Make cooling deficiency, i.e. cooling air channel design existing defects, the radiating of key power device cannot ensure；2）High frequency signals Machine is out of control caused by improper or failure situation.Reason：The interference problem that high-frequency signal is brought does not draw attention, and deals with improperly It is caused；3）Complex manufacturing, production cost are high.

A kind of Stability Analysis of Structures, the monolithic processor controlled IGBT single tubes technical grade Multifunctional argon arc welding of rapid heat dissipation are designed for this Machine and its circuit are extremely necessary.

The content of the invention

The problem that the utility model breaches prior art is to devise a kind of Stability Analysis of Structures, the single-chip microcomputer of rapid heat dissipation The IGBT single tube technical grade Multifunctional argon arc welding machines and its circuit of control.

In order to achieve the above object, the utility model devises a kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding Machine, including cabinet, mainboard, control panel, it is characterised in that：Cabinet is made up of bottom plate, front panel, rear board and case, case Top is provided with handle, and rear board the latter half is embedded with blower fan, and the front of blower fan is provided with blower fan guard, and the rear board first half sets up separately There are water supply connector, inlet suction port, fixed mount, electric source connecting box, having air switch, four base angles in bottom plate lower section are fixed in fixed mount Under-chassis is respectively fixed with, mainboard is provided with above bottom plate, the side of mainboard is provided with transformer, inductance, set between transformer and inductance There is high-frequency absorption plate, the opposite side of inductance is provided with pressure switch fixed mount, and the top of inductance is provided with three-way connection, three-way connection Top is connected with high-frequency inductor, and the side of high-frequency inductor is provided with current sensor, and the opposite side of high-frequency inductor is provided with connecting copper bar, Mainboard, current sensor, high-frequency inductor, median septum is equipped with above connecting copper bar, the top of median septum is provided with protective ring, three Commutating phase bridge, high frequency run-on tab, three phase mains, control panel and magnetic valve, the front of median septum are provided with control panel, on front panel It is embedded with three core aviation sockets, water route out splice going splice, both positive and negative polarity out splice going splice, preceding defeated air outlet adapter, two core aviation sockets, key-shaped Switch, knob, three core aviation sockets, water route out splice going splice, both positive and negative polarity out splice going splice, preceding defeated air outlet adapter, two core aviation sockets, Keyswitch, knob are connected through front panel with control panel.

The mainboard is recovered to export cowling panel, single tube IGBT module, radiator, fast recovery diode, IGBT inversions by fast Plate, gripper shoe groups are into the side of supporting plate is provided with fast recovery diode, and fast recovery diode is sticked above radiator one, dissipates The side of hot device one is connected with supporting plate, and the opposite side of radiator one is connected with the fast output cowling panel that recovers, supporting plate it is another Side is connected with the side of radiator two, and radiator two is provided with single tube IGBT module, thermistor, collets, radiator two Opposite side is connected with IGBT inversion plates.

The utility model have also been devised a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine, including IGBT inverter circuits, IGBT drive controls circuit, rectifying output circuit, high frequency striking current, control panel circuit and accessory power supply Circuit, it is characterised in that：No. 1 port of PWR1 ports is divided into Shi Yilu, respectively the current collection end with IGBT pipes T16, IGBT pipes T11 Current collection end, IGBT pipes T13 current collection end, IGBT pipes T12 current collection end, electric capacity C56 one end, electric capacity C9 one end, resistance R93 one end, electric capacity C15 one end, thermistor RT4 one end, relay J25 No. 4 ports are connected, thermistor RT4 The other end be divided into two-way, be connected respectively with relay J25 No. 3 ports, DC+IN1 ports, the electric capacity C15 other end is divided into Nine tunnels, respectively one end with electric capacity C3, the resistance R93 other end, resistance R95 one end, the electric capacity C16 other end, electric capacity C13 One end, the electric capacity C9 other end, electric capacity C12 one end, the electric capacity C56 other end, electric capacity C57 one end be connected, IGBT pipes T12 transmitting terminal is divided into four tunnels, respectively the current collection end with IGBT pipes T10, IGBT pipes T13 transmitting terminal, IGBT pipes T14 current collection End, OUTA1 ports are connected, and IGBT pipes T11 transmitting terminal is divided into four tunnels, respectively the current collection end with IGBT pipes T15, IGBT pipes T16 Transmitting terminal, IGBT pipes T17 current collection end, transformer T18 No. 1 port be connected, transformer T18 No. 2 ports and OUTB1 ends Mouth is connected, and transformer T18 No. 3 ports are connected with CT-B ports, and transformer T18 No. 4 ports are connected with CT-A ports, PWR1 No. 2 ports be divided into ten tunnels, the transmitting of the transmitting terminal with IGBT pipes T17, IGBT pipes T15 transmitting terminal, IGBT pipes T14 respectively End, IGBT pipes T10 transmitting terminal, the electric capacity C57 other end, the electric capacity C12 other end, the electric capacity C13 other end, resistance R95 The other end, the electric capacity C3 other end, DC-IN1 ports be connected, IGBT pipes T17 base stage is connected with G4B ports, IGBT pipes T16 Base stage be connected with G2B ports, IGBT pipes T15 base stage is connected with G4A ports, IGBT pipes T14 base stage and G3B ports phase Even, IGBT pipes T13 base stage is connected with G1B ports, and IGBT pipes T12 base stage is connected with G1A ports, IGBT pipes T11 base stage It is connected with G2A ports, IGBT pipes T10 base stage is connected with G3A ports, and No. 1 port of the relay J25 is divided into three tunnels, point One end of one end, diode D9 not with diode D7, triode Q19 colelctor electrode are connected, the diode D9 other end with it is steady Pressure diode ZD3 one end is connected, and triode Q19 base stage is connected with voltage-regulator diode ZD4 one end, voltage-regulator diode ZD4 The other end be divided into two-way, the other end with voltage-regulator diode ZD3, resistance R4 one end are connected respectively, triode Q19 transmitting Pole is connected with electric capacity C14 one end, and the electric capacity C14 other end is divided into two-way, respectively the other end with resistance R4, the one of resistance R3 End is connected, and the resistance R3 other end is divided into two-way, and one end with diode D7, relay J25 No. 2 ports are connected respectively.

The IGBT drive controls circuit is as follows：DRV1 No. 1 port is connected with VCC ports, and DRV1 No. 2 ports connect Ground, DRV1 No. 3 ports are connected with-VCC ports, and DRV1 No. 4 ports are divided into four tunnels for PWM-A ports, respectively with electric capacity C58 One end, resistance R100 one end, electric capacity C46 one end, resistance R78 one end be connected, the resistance R78 other end is divided into two Road, respectively the other end with electric capacity C46, voltage-regulator diode Z45 one end be connected, the voltage-regulator diode Z45 other end and three poles Pipe Q15 base stage is connected, and triode Q15 transmitting terminal is divided into two-way, respectively with VCC ports, triode Q16 transmitting terminal phase Even, triode Q15 colelctor electrode is connected with resistance R77 one end, and the resistance R77 other end is divided into two-way, respectively with triode Q17 colelctor electrode, transformer TR2 No. 1 port are connected, triode Q17 transmitting terminal ground connection, triode Q17 base stage with it is steady Pressure diode Z46 one end is connected, and the voltage-regulator diode Z46 other end is divided into two-way, respectively the other end with resistance R100, electricity The other end for holding C58 is connected, and DRV1 No. 5 ports are divided into 4 tunnels for PWM-B ports, respectively one end with resistance R79, electric capacity C51 One end, resistance R75 one end, electric capacity C52 one end be connected, the resistance R79 other end is divided into two-way, respectively with electric capacity C51 The other end, voltage-regulator diode Z35 one end be connected, the voltage-regulator diode Z35 other end is connected with triode Q16 base stage, Triode Q16 colelctor electrode is connected with resistance R76 one end, and the resistance R76 other end is divided into two-way, respectively with triode Q18 Colelctor electrode, transformer TR2 No. 2 ports be connected, triode Q18 grounded emitter, triode Q18 base stage and voltage stabilizing two Pole pipe Z36 one end is connected, and the voltage-regulator diode Z36 other end is divided into two-way, respectively the other end with resistance R75, electric capacity C52 The other end be connected, transformer TR2 No. 3 ports are divided into five tunnels, respectively the colelctor electrode with triode Q9, resistance R90 one end, Voltage-regulator diode Z49 one end, resistance R56 one end, voltage-regulator diode Z38 one end are connected, and voltage-regulator diode Z38's is another End is divided into two-way, and the other end with resistance R56, voltage-regulator diode Z37 one end are connected respectively, and voltage-regulator diode Z37's is another End is connected with resistance R55 one end, and the resistance R55 other end is divided into three tunnels, respectively one end with resistance R80, the one of electric capacity C25 End, voltage-regulator diode Z47 one end are connected, and the resistance R80 other end is connected with voltage-regulator diode Z48 one end, the pole of voltage stabilizing two The pipe Z48 other end is divided into two-way, and the other end with resistance R90, the voltage-regulator diode Z49 other end are connected respectively, voltage stabilizing two The pole pipe Z47 other end is divided into three tunnels, respectively the other end with electric capacity C25, triode Q9 emitter stage, the one of diode D11 End is connected, and triode Q9 base stage is divided into two-way, and one end with diode D16, resistance R88 one end are connected respectively, diode The D11 other end is divided into three tunnels, respectively the other end with diode D16, the resistance R88 other end, transformer TR2 No. 4 ends Mouth is connected, and transformer TR2 No. 5 ports are divided into three tunnels, respectively one end with diode D19, diode D20 one end, resistance R98 one end is connected, and the diode D20 other end is divided into two-way, respectively the other end with resistance R98, triode Q21 base stage It is connected, the diode D19 other end is divided into three tunnels, respectively the emitter stage with triode Q21, electric capacity C27 one end, the pole of voltage stabilizing two Pipe Z53 one end is connected, the voltage-regulator diode Z53 other end is divided into three tunnels, respectively the other end with electric capacity C27, resistance R99 One end, resistance R63 one end are connected, and the resistance R99 other end is connected with voltage-regulator diode Z54 one end, voltage-regulator diode Z54 The other end be divided into two-way, one end with resistance R101 one end, voltage-regulator diode Z55 is connected respectively, the resistance R63 other end with Voltage-regulator diode Z41 one end is connected, and the voltage-regulator diode Z41 other end is divided into two-way, respectively one end with resistance R64, steady Pressure diode Z42 one end is connected, and the voltage-regulator diode Z42 other end is divided into five tunnels, respectively the other end with resistance R64, steady The pressure diode Z55 other end, the resistance R101 other end, triode Q21 colelctor electrode, transformer TR2 No. 6 port phases Even, transformer TR2 No. 7 ports are divided into five tunnels, respectively the colelctor electrode with triode Q20, resistance R97 one end, the pole of voltage stabilizing two Pipe Z52 one end, resistance R60 one end, voltage-regulator diode Z40 one end are connected, and the voltage-regulator diode Z40 other end is divided into two Road, respectively the other end with resistance R60, voltage-regulator diode Z39 one end be connected, voltage-regulator diode the Z39 other end and resistance R59 one end is connected, and the resistance R59 other end is divided into three tunnels, respectively one end with resistance R96, electric capacity C26 one end, voltage stabilizing Diode Z50 one end is connected, and the resistance R96 other end is connected with voltage-regulator diode Z51 one end, voltage-regulator diode Z51's The other end is divided into two-way, and the other end with resistance R97, the voltage-regulator diode Z52 other end are connected respectively, voltage-regulator diode Z50 The other end be divided into three tunnels, the other end with electric capacity C26, triode Q20 emitter stage, diode D17 one end are connected respectively, Triode Q20 base stage is divided into two-way, and one end with diode D18, resistance R91 one end are connected respectively, and diode D17's is another One end is divided into three tunnels, and the other end with diode D18, the resistance R91 other end, transformer TR2 No. 8 ports are connected respectively, Transformer TR2 No. 9 ports are divided into three tunnels, respectively one end with diode D14, diode D15 one end, the one of resistance R50 End is connected, and the diode D15 other end is divided into two-way, and the other end with resistance R50, triode Q8 base stage are connected respectively, and two The pole pipe D14 other end is divided into three tunnels, respectively the emitter stage with triode Q8, electric capacity C24 one end, voltage-regulator diode Z32 One end is connected, and the voltage-regulator diode Z32 other end is divided into three tunnels, respectively the other end with electric capacity C24, resistance R51 one end, electricity Resistance R65 one end is connected, and the resistance R51 other end is connected with voltage-regulator diode Z33 one end, and voltage-regulator diode Z33's is another End is divided into two-way, and one end with resistance R52 one end, voltage-regulator diode Z34 is connected respectively, resistance the R65 other end and voltage stabilizing two Pole pipe Z43 one end is connected, and the voltage-regulator diode Z43 other end is divided into two-way, respectively one end with resistance R87, the pole of voltage stabilizing two Pipe Z44 one end is connected, and the voltage-regulator diode Z44 other end is divided into five tunnels, respectively the other end with resistance R87, the pole of voltage stabilizing two The pipe Z34 other end, the resistance R52 other end, triode Q8 colelctor electrode, transformer TR2 No. 10 ports are connected.

Described rectifying output circuit is as follows：Transformer T1 No. 3 ports are divided into five tunnels, respectively one end with resistance R1, Diode D4 one end, diode D4 ' one end, diode D3 one end, diode D3 ' one end are connected, and resistance R1's is another One end is connected with resistance R2 one end, and the resistance R2 other end is connected with electric capacity C14 one end, and the electric capacity C14 other end is divided into 16 tunnels, the respectively other end with diode D4, the diode D4 ' other end, the diode D3 other end, diode D3 ' The other end, electric capacity C15 one end, diode D2 one end, diode D2 ' one end, OUT1 ports, diode D1 one end, Diode D1 ' one end, diode D8 one end, diode D8 ' one end, diode D7 one end, the one of diode D7 ' End, OUT2 ports, diode D6 one end, diode D6 ' one end, diode D5 one end, diode D5 ' one end, electricity One end, the electric capacity C13 one end for holding C17 are connected, and the electric capacity C13 other end is connected with J2, electric capacity the C17 other end and resistance R8 One end be connected, the resistance R8 other end is connected with resistance R7 one end, and the resistance R7 other end is divided into five tunnels, respectively with two poles The pipe D6 other end, the diode D6 ' other end, the diode D5 other end, the diode D5 ' other end, the 8 of transformer T1 Number port is connected, and transformer T1 No. 5 ports are divided into five tunnels, respectively the other end with diode D7, diode D7 ' it is another End, the diode D8 other end, the diode D8 ' other end, resistance R5 one end are connected, resistance the R5 other end and resistance R6 One end be connected, the resistance R6 other end is connected with the electric capacity C16 other end, and transformer T1 No. 6 ports are divided into five tunnels, respectively The other end, the diode D2 ' other end, the diode D1 other end, diode D1 ' other end, resistance with diode D2 R3 one end, the resistance R3 other end are connected with resistance R4 one end, the resistance R4 other end with electric capacity C15 one end, electric capacity The C13 other end is connected with support chip J2.

The hf arc starting circuit is as follows：Chip U2 VREF ports are divided into two-way, respectively one end with resistance R11, electricity Resistance R4 one end is connected, and the resistance R11 other end is divided into two-way, respectively the VFB ports with chip U2, No. 1 of support chip J5 Port is connected, and support chip J5 No. 2 ports ground connection, support chip J5 No. 3 ports are connected with electric capacity C14 one end, electric capacity C14 other end ground connection, chip U2 VCC ports are connected with chip U4 VOUT ports, chip U4 GND ports ground connection, core Piece U4 VIN ports are connected with 28V power supplys, chip U2 GND ports ground connection, chip U2 OUT terminal mouth and resistance R2 one end It is connected, the resistance R2 other end is divided into two-way, and one end with resistance R17, FET T3 gate pole are connected respectively, resistance R17 Other end ground connection, FET T3 drain electrode is connected with transformer T4 No. 1 port, transformer T4 No. 2 ports and 28V Power supply is connected, and transformer T4 No. 3 ports are divided into two-way, and No. 2 ports with G2 ports, electric capacity C15 one end are connected respectively, electricity The other end for holding C15 is connected with support chip J7 No. 1 port, supports chip J7 No. 2 ports to be divided into two-way, respectively with G2 ends Mouthful No. 1 port, transformer T4 HV ports be connected, FET T3 source electrode is divided into two-way, respectively with the one of resistance R18 End, resistance R16 one end are connected, resistance R18 other end ground connection, the resistance R16 other end and chip U2 ISENSE ports It is connected, the resistance R4 other end is connected with chip U2 RT/CT ports.

The control panel circuit is as follows：Peripheral interface J28 No. 1 port is R_LINK ports, is divided into two-way, respectively with electricity One end, the resistance R154 one end for holding C135 are connected, and No. 2 ports of the peripheral interface J28 are P_LINK ports, are divided into two Road, respectively one end with electric capacity C136, resistance R156 one end be connected, No. 3 ports of the peripheral interface J28 are KEY1 ends Mouthful, be connected with electric capacity C137 one end, peripheral interface J28 No. 4 ports are 24VP ports, are divided into two-way, respectively with resistance R155 one end, electric capacity C139 one end is connected, and peripheral interface J28 No. 5 ports are GND_SIGNAL ports, with electric capacity C138 One end be connected, peripheral interface J28 No. 6 ports are Remote_POT ports, are connected with electric capacity C140 one end, peripheral interface J28 No. 7 ports are UP ports, are connected with electric capacity C141 one end, and peripheral interface J28 No. 8 ports are DOWN ports, with electricity The one end for holding C142 is connected, and the other end of the electric capacity C135 ~ C142 is harness-integrated to be connected with J27 ports, institute resistance R155's The other end is divided into three tunnels, and the other end with 24V power supplys, the resistance R156 other end, resistance R154 is connected respectively, the KEY1 ends Mouth is connected with photoelectrical coupler U14 No. 2 ports, and photoelectrical coupler U14 No. 1 port is connected with resistance R49 one end, resistance The R49 other end is connected with 24V power supplys, and photoelectrical coupler U14 No. 4 ports are connected with 5V power supplys, and the 3 of photoelectrical coupler U14 Number port is divided into two-way, and one end with arc welding gun switch port, resistance R45 is connected respectively, resistance R45 other end ground connection；It is described R_LINK ports are connected with photoelectrical coupler U20 No. 2 ports, photoelectrical coupler U20 No. 1 port and resistance R79 one end It is connected, the resistance R79 other end is connected with 24V power supplys, and photoelectrical coupler U20 No. 4 ports are connected with 5V power supplys, photoelectric coupling Device U20 No. 3 ports are divided into two-way, and one end with R_LINK_F ports, resistance R78 is connected respectively, resistance R78 another termination Ground；The P_LINK ports are connected with photoelectrical coupler U21 No. 2 ports, photoelectrical coupler U21 No. 1 port and resistance R81 One end be connected, the resistance R81 other end is connected with 24V power supplys, and photoelectrical coupler U21 No. 4 ports are connected with 5V power supplys, light Electric coupler U21 No. 3 ports are divided into two-way, and one end with P_LINK_F ports, resistance R80 is connected respectively, and resistance R80's is another One end is grounded；The UP ports are connected with photoelectrical coupler U23 No. 2 ports, photoelectrical coupler U23 No. 1 port and resistance R104 one end is connected, and the resistance R104 other end is connected with 24V power supplys, photoelectrical coupler U23 No. 4 ports and 5V power supply phases Even, photoelectrical coupler U20 No. 3 ports are divided into two-way, and one end with GUN_UP ports, resistance R103 is connected respectively, resistance R103 other end ground connection；The DOWN ports are connected with photoelectrical coupler U22 No. 2 ports, No. 1 of photoelectrical coupler U22 Port is connected with resistance R84 one end, and the resistance R84 other end is connected with 24V power supplys, photoelectrical coupler U22 No. 4 ports with 5V power supplys are connected, and photoelectrical coupler U22 No. 3 ports are divided into two-way, respectively with GUN_DOWN ports, resistance R83 one end phase Even, resistance R83 other end ground connection；The 24V power supplys are also connected with photoelectrical coupler U45 No. 4 ports, photoelectrical coupler U45 No. 3 ports are connected with resistance R160 one end, and the resistance R160 other end is divided into two-way, respectively with the one of resistance R159 End, triode Q17 base stage are connected, and the resistance R159 other end is connected with signal ground, triode Q17 emitter stage and signal ground It is connected, triode Q17 colelctor electrode is connected with HF2 No. 1 port, and HF2 No. 2 ports are connected with signal ground, photoelectrical coupler U45 No. 2 ports ground connection, photoelectrical coupler U45 No. 1 port are connected with resistance R171 one end, the resistance R171 other end It is connected with HF ports；The 24V power supplys are divided into one end respectively with resistance R175 of three tunnels, diode D43 one end, air-path interface GAS2 No. 1 port is connected, and the resistance R175 other end is divided into three tunnels, respectively one end with resistance R177, photoelectrical coupler U47 No. 4 ports, FET T14 gate pole be connected, FET T14 drain electrode is divided into two-way, respectively with diode D43's The other end, air-path interface GAS2 No. 2 ports are connected, and the resistance R177 other end is divided into three tunnels, respectively with FET T14's Source electrode, signal ground, photoelectrical coupler U47 No. 3 ports are connected, photoelectrical coupler U47 No. 2 ports ground connection, photoelectrical coupler U47 No. 1 port is connected with resistance R176 one end, and the resistance R176 other end is connected with gas trap；The 24V power supplys are divided into One end with resistance R172, diode D42 one end, ZNFJ2 No. 1 port are connected respectively on three tunnels, the resistance R172 other end It is divided into three tunnels, one end with resistance R174, photoelectrical coupler U46 No. 4 ports, FET T15 gate pole are connected respectively, field Effect pipe T15 drain electrode is divided into two-way, and the other end with diode D42, ZNFJ2 No. 2 ports are connected respectively, resistance R174 The other end be divided into three tunnels, the source electrode with FET T15, signal ground, photoelectrical coupler U46 No. 3 ports are connected respectively, light Electric coupler U46 No. 2 ports ground connection, photoelectrical coupler U46 No. 1 port are connected with resistance R173 one end, resistance R173 The other end be connected with ZNFJ ports；The 24V power supplys are divided into one end respectively with resistance R178 of three tunnels, the one of diode D44 End, water route interface Water2 No. 1 port be connected, the resistance R178 other end is divided into three tunnels, respectively one end with resistance R180, Photoelectrical coupler U48 No. 4 ports, FET T16 gate pole are connected, and FET T16 drain electrode is divided into two-way, respectively No. 3 ports of the other end, water route interface Water2 with diode D44 are connected, and the resistance R178 other end is divided into three tunnels, respectively No. 3 ports of source electrode, signal ground, photoelectrical coupler U48 with FET T16 are connected, photoelectrical coupler U48 No. 2 ports Ground connection, photoelectrical coupler U48 No. 1 port are connected with resistance R179 one end, resistance the R179 other end and water route relay It is connected；The 5V power supplys are connected with control chip U4 VIN ports, control chip U4 GND ports ground connection, control chip U4's VOUT ports are connected with resistance R183 one end, and the resistance R183 other end is connected with one end of LED 5, light The other end ground connection of diode (LED) 5；The one end of the 5V power supplys also with resistance R181 is connected, and the resistance R181 other end is divided into Two-way, respectively one end with electric capacity C30, No. 1 port of JS2 ports be connected, the electric capacity C30 other end is divided into two-way, respectively with Ground, JS2 No. 2 ports are connected；Control chip U8 VIN ports are connected with VCC ports, control chip U8 GND ports point For three tunnels, one end with ground, electric capacity C158 one end, LED 6 is connected respectively, LED 6 it is another One end is connected with resistance R184 one end, and the resistance R184 other end is divided into two-way, respectively the other end with electric capacity C158, chip U8 VOUT ports are connected；Control board chip U9 SHDN ports are divided into four tunnels, respectively one end with resistance R4, resistance R22 One end, electric capacity C6 one end, diode D22 one end are connected, and the electric capacity C6 other end is divided into two-way, respectively with resistance R22's The other end, ground are connected, and the diode D22 other end is connected with resistance R208, and the resistance R4 other end is divided into five tunnels, respectively with Resistance R27 one end, resistance R7 one end, diode D5 one end, diode D6 one end, resistance R26 one end are connected, and two The pole pipe D5 other end is divided into two-way, and one end with diode D7, No. 1 port of HGQ1 ports are connected respectively, diode D6's The other end is divided into two-way, and one end with diode D8, No. 2 ports of HGQ1 ports are connected respectively, and the resistance R7 other end is divided into Three tunnels, respectively the other end with diode D7, the diode D8 other end, ground be connected, the resistance R27 other end and VCC ends Mouth is connected, and the resistance R26 other end is connected with CT ports, and control chip U9 COMP ports are connected with ERA- ports, controls core Piece U9 ERA+ ports are connected with resistance R199 one end, and the resistance R199 other end is divided into four tunnels, respectively with resistance R205's One end, resistance R196 one end, diode D18 one end, resistance R190 one end are connected, the resistance R205 other end and three poles Pipe Q6 colelctor electrode is connected, triode Q6 grounded emitter, and triode Q6 base stage is connected with resistance R211, resistance R196's The other end is grounded, and diode D18's is grounded anotherly, and the resistance R190 other end is divided into three tunnels, respectively with the one of electric capacity C39 End, voltage-regulator diode VD2 one end, amplifier U51A No. 1 port are connected, the electric capacity C39 other end and resistance R30 one end It is connected, the resistance R30 other end is divided into seven tunnels, respectively one end with voltage-regulator diode VD2, amplifier U51A No. 2 ports, two Pole pipe D21 one end, diode D20 one end, resistance R197 one end, resistance R200 one end, resistance R186 one end phase Even, the diode D20 other end is divided into three tunnels, respectively with ground, the diode D21 other end, amplifier U51A No. 3 ports It is connected, the resistance R197 other end is connected with HALL ports, and the resistance R186 other end is connected with resistance R185 one end, resistance The R185 other end is connected with diode D32 one end, and the diode D32 other end is divided into three tunnels, respectively with resistance R200's The other end, amplifier U53B No. 7 ports, resistance R191 one end are connected, and the resistance R191 other end is divided into three tunnels, respectively with Resistance R213 one end, resistance R28 one end, amplifier U53B No. 6 ports are connected, and the resistance R213 other end is with sliding electricity Resistance VR6 sliding end is connected, and swept resistance VR6 one end is connected with VCC ports, swept resistance the VR6 other end and-VCC ends Mouth is connected, and amplifier U53B No. 5 ports ground connection, the resistance R28 other end is connected with swept resistance VR7 sliding end, slided Resistance VR7 one end is divided into two-way, and No. 14 ports with amplifier U50D, amplifier U50D No. 13 ports are connected respectively, sliding Dynamic resistance VR7 other end ground connection, amplifier U50D No. 12 ports are connected with TO10 ports, the HALL ports also with resistance R51 one end is connected, and the resistance R51 other end is divided into three tunnels, respectively one end with resistance R130, resistance R131, resistance R136 It is connected, resistance R130 other end ground connection；Control chip U9 GND ports ground connection, control chip U9 VC ports and resistance R2 One end be connected, the resistance R2 other end is connected with VCC ports, and control chip U9 VIN ports are connected with VCC ports, control Chip U9 CS/SS ports are connected with SS ports, control chip U9 AOUT ends and No. 4 port PWM-A phases of Driver1 chips Even, control chip U9 BOUT ends are connected with No. 5 port PWM-B of Driver1 chips, control chip U9 CT ports and three poles Pipe Q3 base stage is connected, and triode Q3 colelctor electrode is connected with VREF ports, and triode Q3 emitter stage is divided into three tunnels, respectively with Electric capacity C126 one end, resistance R31 one end, electric capacity C125 one end are connected, and the electric capacity C125 other end is with resistance R193's One end is connected, and the resistance R193 other end is divided into five tunnels, respectively the other end with resistance R31, resistance R24 one end, electric capacity The C125 other end, resistance R14 one end, control chip U9 CS+ ports are connected, resistance the R24 other end and CT ports phase Even, resistance R14 other end ground connection, control chip U9 CS- ports are divided into three tunnels, respectively one end with resistance R192, ground, FET T18 source electrode is connected, and FET T18 gate pole is divided into two-way, respectively one end with resistance R209, diode D45 one end is connected, and resistance R209 other end ground connection, the diode D45 other end is connected with BP ports, FET T18 Drain electrode be connected with resistance R215 one end, the resistance R215 other end is divided into two-way, respectively the other end with resistance R192, Control chip U9 RT ports are connected, and No. 1 port of the Driver1 chips is connected with VCC ports, No. 2 of Driver1 chips Port is-VCC ports, and the BP ports are connected with amplifier U36C No. 8 ports, and amplifier U36C No. 9 ports are divided into three Road, respectively one end with diode D25, diode D26 one end, J11 No. 3 ports be connected, the diode D25 other end point For two-way, No. 1 port with VCC ports, J11 is connected respectively, and the diode D26 other end is divided into two-way, respectively with-VCC ends Mouth, J11 No. 2 ports are connected, and amplifier U36C No. 10 ports are divided into two-way, respectively one end with resistance R135, resistance R134 one end is connected, and resistance R135 other end ground connection, the resistance R134 other end is connected with VCC ports, and the 4 of J11 ports Number port ground connection；Control chip U38 No. 1 port is connected with signal ground, and control chip U38 No. 2 ports are with resistance R140's One end is connected, and the resistance R140 other end is connected with amplifier U37B No. 7 ports, amplifier U37B No. 5 ports and periphery Port PO T-phase connects, amplifier U37B No. 6 ports are divided into two-way, respectively No. 4 ports with control chip U38, resistance R141 One end is connected, and the resistance R141 other end is connected with signal ground, and control chip U38 No. 5 ports are divided into two-way, respectively with resistance R144 one end, amplifier U39B No. 5 ports are connected, resistance R144 other end ground connection, amplifier U39B No. 6 ports point For two-way, one end with resistance R145, amplifier U39B No. 7 ports are connected respectively, and the resistance R145 other end is divided into two-way, One end with resistance R146, voltage-regulator diode Z4 one end are connected respectively, resistance R146 other end ground connection, voltage-regulator diode Z4 The other end ground connection, control chip U38 No. 6 ports are connected with VCC ports；Control chip U43 No. 1 port and signal ground phase Even, control chip U43 No. 2 ports are connected with resistance R148 one end, the resistance R148 other end and No. 1 of amplifier U40A Port is connected, and amplifier U40A No. 2 ports are divided into two-way, respectively one end with resistance R149, control chip U43 No. 4 ends Mouth is connected, and the resistance R149 other end is connected with signal ground, amplifier U40A No. 3 ports and swept resistance VR5 sliding end It is connected, swept resistance VR5 one end is connected with resistance R150 one end, and the swept resistance VR5 other end is connected with signal ground, electricity The resistance R150 other end is divided into two-way, and No. 1 port with VFB1 ports, resistance R167 one end are connected respectively, and the 2 of VFB1 ports Number port is connected with signal ground, and the resistance R167 other end is divided into two-way, respectively one end with resistance R168, voltage-regulator diode Z48 one end is connected, and the resistance R168 other end is connected with signal ground, and the voltage-regulator diode Z48 other end is divided into two-way difference No. 1 port of one end, photoelectrical coupler U41A with resistance R169 is connected, and the resistance R169 other end is divided into two-way, respectively with Signal ground, photoelectrical coupler U41A No. 2 ports are connected, photoelectrical coupler U41A No. 3 ports ground connection, photoelectrical coupler U41A No. 4 ports be connected with FET T13 source electrode, FET T13 drain electrode is connected with SS ports, FET T13 Gate pole connected with resistance R170；No. 1 port of the control panel GND1 ports is connected with 5V power supplys, control panel GND1 ports No. 2 ports are connected with resistance R54 one end, and the resistance R54 other end is connected with 5V power supplys, No. 3 ends of control panel GND1 ports Mouth ground connection；No. 1 port of control panel OT4 ports is divided into three tunnels, respectively one end with resistance R137, the one of voltage-regulator diode Z46 End, electric capacity C122 one end are connected, and the resistance R137 other end is connected with 5V power supplys, and the electric capacity C122 other end is divided into three tunnels, The other end with voltage-regulator diode Z46, ground, No. 2 ports of control panel OT4 ports are connected respectively；The 1 of control panel OT3 ports Number port is divided into three tunnels, and one end with resistance R138, voltage-regulator diode Z47 one end, electric capacity C121 one end are connected respectively, electricity The resistance R138 other end is connected with 5V power supplys, and the electric capacity C121 other end is divided into three tunnels, another with voltage-regulator diode Z47 respectively End, ground, No. 2 ports of control panel OT3 ports are connected.

The auxiliary power circuit is as follows：Chip U5 VFB ports are divided into five tunnels, respectively with the 3 of photoelectrical coupler U14B Number port, electric capacity C22 one end, electric capacity C23 one end, resistance R17 one end, resistance R13 one end are connected, resistance R17's The other end is divided into two-way, and the other end with signal ground, electric capacity C23 is connected respectively, and the resistance R13 other end is divided into two-way, respectively The COMP ports of the other end, chip U5 with electric capacity C22 are connected, and chip U5 RT/CT ports are divided into two-way, respectively with resistance R21 one end, electric capacity C26 one end is connected, and the electric capacity C26 other end is connected with signal ground, and the resistance R21 other end is divided into two Road, respectively one end with electric capacity C52, chip U5 VREF ports be connected, the electric capacity C52 other end is connected with signal ground, chip U5 ISNS ports are divided into two-way, and one end with electric capacity C29, resistance R22 one end are connected respectively, the electric capacity C29 other end with Signal ground is connected, and the resistance R22 other end is connected with CFB ports, and chip U5 VCC ports are divided into two-way, respectively with V port, Electric capacity C24 one end is connected, and the electric capacity C24 other end is connected with signal ground, and chip U5 GND ports are connected with signal ground, core Piece U5 OUT terminal mouth is connected with PWM port, and PWM port is connected with resistance R23 one end, the resistance R23 other end and field-effect Pipe T6 gate pole is connected, and FET T6 source electrode is divided into three tunnels, respectively one end with resistance R29, resistance R30 one end, CFB Port is connected, and the resistance R30 other end is divided into two-way, and the other end with resistance R29, signal ground are connected respectively, FET T6 Drain electrode be divided into two-way, one end with diode D30, transformer T5 No. 8 ports are connected respectively, and diode D30's is another End is divided into three tunnels, and one end with resistance R26, resistance R20 one end, electric capacity C25 one end are connected respectively, and resistance R26's is another End is divided into four tunnels, respectively the other end with resistance R20, the electric capacity C25 other end, VIN ports, transformer T5 No. 10 port phases Even, transformer T5 No. 12 ports are connected with diode D6 one end, and the diode D6 other end is divided into two-way, respectively with electric capacity C51 one end, resistance R25 one end is connected, and the resistance R25 other end is connected with V port, electric capacity the C51 other end and signal Ground is connected, and transformer T5 No. 14 ports are divided into two-way, and one end with signal ground, electric capacity C55 is connected respectively, and electric capacity C55's is another One end is grounded, and transformer T5 No. 7 ports are connected with diode D4 one end, and the diode D4 other end is divided into three tunnels, respectively One end of one end, resistance R67 with electric capacity C45, No. 1 port of FAN1 ports are connected, and No. 2 ports of FAN ports are divided into four tunnels, The other end with resistance R67, ground, the electric capacity C45 other end, transformer T5 No. 6 ports are connected respectively, and the 3 of transformer T5 Number port is connected with diode D26 one end, and the diode D26 other end is divided into two-way, respectively one end with electric capacity C47, core Piece U13 VIN ports are connected, and chip U13 VOUT ports are divided into three tunnels, respectively one end with electric capacity C49, the one of resistance R66 End, electric capacity C50 one end are connected, and the electric capacity C50 other end is divided into Shi Erlu, respectively one end with electric capacity C57, electric capacity C56 One end, resistance R69 one end, ground, photoelectrical coupler U14A No. 2 ports, electric capacity C49 one end, resistance R68 one end, Chip U13 GND ports, resistance R63 one end, electric capacity C47 one end, electric capacity C48 one end, transformer T5 No. 2 ports It is connected, the electric capacity C56 other end is connected with the electric capacity C57 other end, and photoelectrical coupler U14A No. 1 port is with resistance R64's One end is connected, and the resistance R64 other end is divided into two-way, respectively the other end with resistance R69, voltage-regulator diode Z20 one end phase Even, the voltage-regulator diode Z20 other end is divided into three tunnels, respectively the other end with resistance R63, the electric capacity C48 other end, diode D32 one end is connected, and the diode D32 other end is connected with transformer T5 No. 1 port, the VIN ports also with resistance R75 One end be connected, the resistance R75 other end is divided into two-way, respectively one end with resistance R74, voltage-regulator diode Z2 one end phase Even, the voltage-regulator diode Z2 other end is divided into one end respectively with resistance R24 of two-way, triode Q5 base stage is connected, triode Q5 colelctor electrode is connected with COMP ports, and triode Q5 emitter stage is divided into three tunnels, respectively the other end with resistance R24, signal Ground, the resistance R74 other end are connected；The one end of the CFB ports also with resistance R28 is connected, and the resistance R28 other end is divided into two Road, respectively one end with resistance R27, IGCT Q2 G ports be connected, the resistance R27 other end is connected with signal ground, IGCT Q2 K ports are connected with signal ground, and IGCT Q2 A ports are connected with V port；One end phase of the V port also with resistance R62 Even, the resistance R62 other end is divided into three tunnels, and one end with VIN ports, resistance R70 one end, electric capacity C31 is connected respectively, resistance The R70 other end is connected with diode D33 one end, and the diode D33 other end is connected with No. 1 port of J2 ports, electric capacity The C31 other end is divided into two-way, and No. 2 ports with signal ground, J2 ports are connected respectively；No. 1 of the J37 ports of power supply chip Port is connected with diode D34 one end, and the diode D34 other end is connected with resistance R77 one end, and resistance R77's is another End is divided into two-way, and one end with resistance R55, photoelectrical coupler U15 No. 1 port are connected respectively, and the resistance R55 other end is divided into Four tunnels, respectively one end with resistance R54, piezo-resistance R59 one end, photoelectrical coupler U16 No. 2 ports, photoelectrical couplers U15 No. 2 ports are connected, and the piezo-resistance R59 other end is connected with No. 3 ports of the J37 ports of power supply chip, resistance The R54 other end is divided into two-way, and one end with resistance R76, photoelectrical coupler U16 No. 1 port are connected respectively, resistance R76's The other end is connected with diode D35 one end, the diode D35 other end and No. 5 port phases of the J37 ports of power supply chip Even, photoelectrical coupler U16 No. 4 ports are divided into three tunnels, respectively one end with resistance R57, electric capacity C37 one end, FET T8 gate pole is connected, and the resistance R57 other end is divided into two-way, and one end with resistance R71,15V power supplys are connected respectively, resistance R71 The other end be divided into three tunnels, the drain electrode with FET T8, resistance R61 one end, FET T7 gate pole are connected respectively, FET T8 source ground, the resistance R61 other end are divided into three tunnels, respectively the drain electrode with FET T7, resistance R38 One end, photoelectrical coupler U10 No. 1 port be connected, FET T7 source electrode is divided into two-way, respectively with photoelectrical coupler U10 No. 2 ports, ground are connected, and photoelectrical coupler U10 No. 3 ports are connected with No. 2 ports of QX1 ports, photoelectrical coupler U10 No. 4 ports are connected with No. 1 port of QX1 ports, and the resistance R38 other end is connected with 15V power supplys, the electric capacity C37's The other end is divided into three tunnels, respectively No. 3 ports with photoelectrical coupler U16, electric capacity C38 one end, No. 4 of photoelectrical coupler U15 Port is connected, and the electric capacity C38 other end is divided into two-way, is connected respectively with photoelectrical coupler U15 No. 3 ports, ground.

The utility model compared with prior art, is controlled by single-chip microcomputer, plus soft on the basis of hardware circuit The function of the means butt welding machine of part is strengthened, and when the design of protection circuit, both using the salvo of hardware, also adds The monitoring and protection of software have been gone up, on preceding control panel, has added numeral method function and light emitting diode indicated work Can, prompting can be wherein provided in charactron parameter adjustment before welding and welding process, such as when current regulation The registration of charactron is the current given value of current value of adjustment parameter, and the welding electricity of current generation can be also shown in welding process Stream；Wherein light emitting diode plays indicative function in parameter regulation and welding process before welding, such as in manual welding state When the regulation of lower welding parameter, when adjusting hot start electric current, accordingly with corresponding to hot start mark on facial mask Light emitting diode will be lighted, and when welding enters normal welded condition, indicate the light emitting diode of welding current just It can light, when generation situations such as welding machine enters protection or water shortage, its corresponding indicator lamp will be lighted, and play warning And the purpose reminded；In addition the utility model is also additionally arranged the numeral method function of a display magnitude of voltage, in unloaded shape Floating voltage numerical value can be shown under state, then can be with real-time display weldingvoltage output valve in welding process.The utility model Different rated current can be produced in the case of by dial-up dish and a small amount of element of change by, which only needing, has the weldering of difference in functionality Machine product.

While the utility model has rational in infrastructure, function admirable, performance parameters, universal compatibility height, reliability high Possess the multi-functional features such as manual electric arc welding, DC argon arc welding and DC pulse argon arc welding.

Brief description of the drawings

Fig. 1 is structure composition explosive view of the present utility model；

Fig. 2 is the Structure explosion diagram of mainboard in the utility model；

Fig. 3 is main circuit topological structure of the present utility model；

Fig. 4 IGBT inverter circuits figures of the present utility model；

Fig. 5 is IGBT drive controls circuit theory diagrams of the present utility model；

Fig. 6 is rectifying output circuit schematic diagram of the present utility model；

Fig. 7 is hf arc starting circuit schematic diagram of the present utility model；

Fig. 8 is control panel circuit theory diagrams of the present utility model（One）；

Fig. 9 is control panel circuit theory diagrams of the present utility model（Two）；

Figure 10 is control panel circuit theory diagrams of the present utility model（Three）；

Figure 11 is control panel circuit theory diagrams of the present utility model；

Figure 12 is auxiliary power circuit schematic diagram of the present utility model.

Embodiment

The utility model is further described with reference to accompanying drawing.

Referring to Fig. 1 ~ 2, the utility model devises a kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine, including Cabinet, mainboard, control panel, it is characterised in that：Cabinet is made up of bottom plate 35, front panel 11, rear board 34 and case 26, case 26 Top be provided with handle 1, the latter half of rear board 34 is embedded with blower fan 33, and the front of blower fan 33 is provided with blower fan guard 32, behind The top half of plate 34 is provided with water supply connector 31, inlet suction port 30, fixed mount 28, electric source connecting box 27, is fixed with fixed mount 28 Air switch 29, four base angles in the lower section of bottom plate 35 are respectively fixed with under-chassis 36, and the top of bottom plate 35 is provided with mainboard 23, the side of mainboard 23 Side is provided with transformer 37, inductance 15, high-frequency absorption plate 16 is provided between transformer 37 and inductance 15, the opposite side of inductance 15 is provided with Pressure switch fixed mount 14, the top of inductance 15 are provided with three-way connection 17, and the top of three-way connection 17 is connected with high-frequency inductor 18, The side of high-frequency inductor 18 is provided with current sensor 19, and the opposite side of high-frequency inductor 18 is provided with connecting copper bar 13, mainboard 23, electric current Sensor 19, high-frequency inductor 18, the top of connecting copper bar 13 are equipped with median septum 25, and the top of median septum 25 is provided with protective ring 20th, three-phase commutation bridge 24, high frequency run-on tab 22, three phase mains 21, control panel 2 and magnetic valve 3, the front of median septum 25 are provided with control Panel 4 processed, three core aviation sockets 12, water route out splice going splice 10, both positive and negative polarity out splice going splice 9, preceding output are embedded with front panel 11 Gas joint 8, two core aviation sockets 7, keyswitch 5, knob 6, three core aviation sockets 12, water route out splice going splice 10, both positive and negative polarity are defeated Go out joint 9, preceding defeated air outlet adapter 8, two core aviation sockets 7, keyswitch 5, knob 6 through front panel 11 and control panel 4 It is connected.

Mainboard 23 recovers to export cowling panel 23-1, single tube IGBT module 23-9, radiator, fast extensive by fast in the utility model Multiple diode 23-6, IGBT inversion plate 23-5, supporting plate 23-4 compositions, supporting plate 23-4 side is provided with fast recovery diode 23-6, fast recovery diode 23-6 are sticked above the 23-2 of radiator one, the 23-2 of radiator one side and supporting plate 23-4 phases Even, the 23-2 of radiator one opposite side is connected with the fast output cowling panel 23-1 that recovers, supporting plate 23-4 opposite side and radiator Two 23-3 side is connected, and the 23-3 of radiator two is provided with single tube IGBT module 23-9, thermistor 23-7, collets 23-8, The 23-3 of radiator two opposite side is connected with IGBT inversion plates 23-5.

Referring to Fig. 3 ~ 12, the utility model devises a kind of electricity of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine Road, including governor circuit, IGBT inverter circuits, IGBT drive controls circuit, rectifying output circuit, high frequency striking current, control Plate circuit and auxiliary power circuit, it is characterised in that：The governor circuit is as follows：380V power supplys and the one of three-phase air switch K Side is connected, and three-phase air switch K opposite side is divided into two-way, and the side with three phase mains 21, three-phase commutation bridge 24 are connected respectively, The opposite side of three phase mains 21 is connected with the side of control panel 2, three-phase commutation bridge 24 and filter circuit A, IGBT inverter circuit B phases Mutually and even, IGBT inverter circuits B is connected with the side of driving plate 38, and the opposite side of driving plate 38 is connected with the side of control panel 2, Control panel 2 is also connected with rectifying output circuit D, hf arc starting circuit C, auxiliary power circuit E.

IGBT inverter circuits B is as follows in the utility model：No. 1 port of PWR1 ports is divided into Shi Yilu, respectively with IGBT Pipe T16 current collection end, IGBT pipes T11 current collection end, IGBT pipes T13 current collection end, IGBT pipes T12 current collection end, electric capacity C56 One end, electric capacity C9 one end, resistance R93 one end, electric capacity C15 one end, thermistor RT4 one end, the 4 of relay J25 Number port is connected, and the thermistor RT4 other end is divided into two-way, respectively No. 3 ports with relay J25, DC+IN1 ports phase Even, the electric capacity C15 other end is divided into nine tunnels, respectively one end with electric capacity C3, the resistance R93 other end, resistance R95 one end, The electric capacity C16 other end, electric capacity C13 one end, the electric capacity C9 other end, electric capacity C12 one end, the electric capacity C56 other end, electricity The one end for holding C57 is connected, and IGBT pipes T12 transmitting terminal is divided into four tunnels, respectively the current collection end with IGBT pipes T10, IGBT pipes T13 Transmitting terminal, IGBT pipes T14 current collection end, OUTA1 ports are connected, and IGBT pipes T11 transmitting terminal is divided into four tunnels, are managed respectively with IGBT T15 current collection end, IGBT pipes T16 transmitting terminal, IGBT pipes T17 current collection end, transformer T18 No. 1 port are connected, transformer T18 No. 2 ports are connected with OUTB1 ports, and transformer T18 No. 3 ports are connected with CT-B ports, transformer T18 No. 4 ends Mouth is connected with CT-A ports, and PWR1 No. 2 ports are divided into ten tunnels, respectively the transmitting terminal with IGBT pipes T17, IGBT pipes T15 hair Penetrate end, IGBT pipes T14 transmitting terminal, IGBT pipes T10 transmitting terminal, the electric capacity C57 other end, the electric capacity C12 other end, electric capacity The C13 other end, the resistance R95 other end, the electric capacity C3 other end, DC-IN1 ports are connected, IGBT pipes T17 base stage with G4B ports are connected, and IGBT pipes T16 base stage is connected with G2B ports, and IGBT pipes T15 base stage is connected with G4A ports, IGBT pipes T14 base stage is connected with G3B ports, and IGBT pipes T13 base stage is connected with G1B ports, IGBT pipes T12 base stage and G1A ports It is connected, IGBT pipes T11 base stage is connected with G2A ports, and IGBT pipes T10 base stage is connected with G3A ports, the relay J25 No. 1 port be divided into three tunnels, one end with diode D7, diode D9 one end, triode Q19 colelctor electrode are connected respectively, The diode D9 other end is connected with voltage-regulator diode ZD3 one end, triode Q19 base stage and the one of voltage-regulator diode ZD4 End is connected, and the voltage-regulator diode ZD4 other end is divided into two-way, respectively the other end with voltage-regulator diode ZD3, resistance R4 one end Be connected, triode Q19 emitter stage is connected with electric capacity C14 one end, and the electric capacity C14 other end is divided into two-way, respectively with resistance The R4 other end, resistance R3 one end are connected, and the resistance R3 other end is divided into two-way, respectively one end with diode D7, relay Device J25 No. 2 ports are connected.

IGBT drive controls circuit is as follows in the utility model：DRV1 No. 1 port is connected with VCC ports, No. 2 of DRV1 Port is grounded, and DRV1 No. 3 ports are connected with-VCC ports, and DRV1 No. 4 ports are that PWM-A ports are divided into four tunnels, respectively with Electric capacity C58 one end, resistance R100 one end, electric capacity C46 one end, resistance R78 one end are connected, the resistance R78 other end It is divided into two-way, the other end with electric capacity C46, voltage-regulator diode Z45 one end are connected respectively, the voltage-regulator diode Z45 other end Be connected with triode Q15 base stage, triode Q15 transmitting terminal is divided into two-way, respectively with VCC ports, triode Q16 transmitting End is connected, and triode Q15 colelctor electrode is connected with resistance R77 one end, and the resistance R77 other end is divided into two-way, respectively with three Pole pipe Q17 colelctor electrode, transformer TR2 No. 1 port are connected, triode Q17 transmitting terminal ground connection, triode Q17 base stage It is connected with voltage-regulator diode Z46 one end, the voltage-regulator diode Z46 other end is divided into two-way, another with resistance R100 respectively End, the electric capacity C58 other end are connected, and DRV1 No. 5 ports are divided into 4 tunnels for PWM-B ports, respectively one end with resistance R79, electricity Hold C51 one end, resistance R75 one end, electric capacity C52 one end are connected, the resistance R79 other end is divided into two-way, respectively with electricity Hold the C51 other end, voltage-regulator diode Z35 one end is connected, the voltage-regulator diode Z35 other end and triode Q16 base stage Be connected, triode Q16 colelctor electrode is connected with resistance R76 one end, and the resistance R76 other end is divided into two-way, respectively with three poles Pipe Q18 colelctor electrode, transformer TR2 No. 2 ports are connected, triode Q18 grounded emitter, triode Q18 base stage with Voltage-regulator diode Z36 one end is connected, and the voltage-regulator diode Z36 other end is divided into two-way, respectively the other end with resistance R75, The electric capacity C52 other end is connected, and transformer TR2 No. 3 ports are divided into five tunnels, respectively the colelctor electrode with triode Q9, resistance R90 One end, voltage-regulator diode Z49 one end, resistance R56 one end, voltage-regulator diode Z38 one end be connected, voltage-regulator diode The Z38 other end is divided into two-way, and the other end with resistance R56, voltage-regulator diode Z37 one end are connected respectively, voltage-regulator diode The Z37 other end is connected with resistance R55 one end, and the resistance R55 other end is divided into three tunnels, respectively one end with resistance R80, electricity One end, the voltage-regulator diode Z47 one end for holding C25 are connected, and the resistance R80 other end is connected with voltage-regulator diode Z48 one end, The voltage-regulator diode Z48 other end is divided into two-way, respectively the other end with resistance R90, voltage-regulator diode Z49 other end phase Even, the voltage-regulator diode Z47 other end is divided into three tunnels, respectively the other end with electric capacity C25, triode Q9 emitter stage, two poles Pipe D11 one end is connected, and triode Q9 base stage is divided into two-way, respectively one end with diode D16, resistance R88 one end phase Even, the diode D11 other end is divided into three tunnels, respectively the other end with diode D16, the resistance R88 other end, transformer TR2 No. 4 ports are connected, transformer TR2 No. 5 ports are divided into three tunnels, respectively one end with diode D19, diode D20 One end, resistance R98 one end are connected, and the diode D20 other end is divided into two-way, respectively the other end with resistance R98, triode Q21 base stage is connected, and the diode D19 other end is divided into three tunnels, respectively the emitter stage with triode Q21, the one of electric capacity C27 End, voltage-regulator diode Z53 one end are connected, and the voltage-regulator diode Z53 other end is divided into three tunnels, another with electric capacity C27 respectively End, resistance R99 one end, resistance R63 one end are connected, and the resistance R99 other end is connected with voltage-regulator diode Z54 one end, The voltage-regulator diode Z54 other end is divided into two-way, and one end with resistance R101 one end, voltage-regulator diode Z55 is connected respectively, resistance The R63 other end is connected with voltage-regulator diode Z41 one end, and the voltage-regulator diode Z41 other end is divided into two-way, respectively with resistance R64 one end, voltage-regulator diode Z42 one end is connected, and the voltage-regulator diode Z42 other end is divided into five tunnels, respectively with resistance R64 The other end, the voltage-regulator diode Z55 other end, the resistance R101 other end, triode Q21 colelctor electrode, transformer TR2 No. 6 ports are connected, and transformer TR2 No. 7 ports are divided into five tunnels, respectively the colelctor electrode with triode Q20, resistance R97 one end, Voltage-regulator diode Z52 one end, resistance R60 one end, voltage-regulator diode Z40 one end are connected, and voltage-regulator diode Z40's is another End is divided into two-way, and the other end with resistance R60, voltage-regulator diode Z39 one end are connected respectively, and voltage-regulator diode Z39's is another End is connected with resistance R59 one end, and the resistance R59 other end is divided into three tunnels, respectively one end with resistance R96, the one of electric capacity C26 End, voltage-regulator diode Z50 one end are connected, and the resistance R96 other end is connected with voltage-regulator diode Z51 one end, the pole of voltage stabilizing two The pipe Z51 other end is divided into two-way, and the other end with resistance R97, the voltage-regulator diode Z52 other end are connected respectively, voltage stabilizing two The pole pipe Z50 other end is divided into three tunnels, respectively the other end with electric capacity C26, triode Q20 emitter stage, the one of diode D17 End is connected, and triode Q20 base stage is divided into two-way, and one end with diode D18, resistance R91 one end are connected respectively, diode The D17 other end is divided into three tunnels, respectively the other end with diode D18, the resistance R91 other end, transformer TR2 No. 8 ends Mouth is connected, and transformer TR2 No. 9 ports are divided into three tunnels, respectively one end with diode D14, diode D15 one end, resistance R50 one end is connected, and the diode D15 other end is divided into two-way, respectively the other end with resistance R50, triode Q8 base stage It is connected, the diode D14 other end is divided into three tunnels, respectively the emitter stage with triode Q8, electric capacity C24 one end, the pole of voltage stabilizing two Pipe Z32 one end is connected, the voltage-regulator diode Z32 other end is divided into three tunnels, respectively the other end with electric capacity C24, resistance R51 One end, resistance R65 one end are connected, and the resistance R51 other end is connected with voltage-regulator diode Z33 one end, voltage-regulator diode Z33 The other end be divided into two-way, one end with resistance R52 one end, voltage-regulator diode Z34 is connected respectively, the resistance R65 other end with Voltage-regulator diode Z43 one end is connected, and the voltage-regulator diode Z43 other end is divided into two-way, respectively one end with resistance R87, steady Pressure diode Z44 one end is connected, and the voltage-regulator diode Z44 other end is divided into five tunnels, respectively the other end with resistance R87, steady The pressure diode Z34 other end, the resistance R52 other end, triode Q8 colelctor electrode, transformer TR2 No. 10 ports are connected.

Rectifying output circuit is as follows in the utility model：Transformer T1 No. 3 ports are divided into five tunnels, respectively with resistance R1's One end, diode D4 one end, diode D4 ' one end, diode D3 one end, diode D3 ' one end are connected, resistance R1 The other end be connected with resistance R2 one end, the resistance R2 other end is connected with electric capacity C14 one end, the electric capacity C14 other end It is divided into 16 tunnels, respectively the other end with diode D4, the diode D4 ' other end, the diode D3 other end, diode D3 ' the other end, electric capacity C15 one end, diode D2 one end, diode D2 ' one end, OUT1 ports, diode D1 One end, diode D1 ' one end, diode D8 one end, diode D8 ' one end, diode D7 one end, diode D7 ' One end, OUT2 ports, diode D6 one end, diode D6 ' one end, diode D5 one end, the one of diode D5 ' End, electric capacity C17 one end, electric capacity C13 one end are connected, and the electric capacity C13 other end is connected with J2, the electric capacity C17 other end with Resistance R8 one end is connected, and the resistance R8 other end is connected with resistance R7 one end, and the resistance R7 other end is divided into five tunnels, respectively The other end, the diode D6 ' other end, the diode D5 other end with diode D6, the diode D5 ' other end, transformation Device T1 No. 8 ports are connected, and transformer T1 No. 5 ports are divided into five tunnels, respectively the other end with diode D7, diode D7 ' The other end, the diode D8 other end, the diode D8 ' other end, resistance R5 one end be connected, the resistance R5 other end with Resistance R6 one end is connected, and the resistance R6 other end is connected with the electric capacity C16 other end, and transformer T1 No. 6 ports are divided into five Road, respectively the other end with diode D2, the diode D2 ' other end, the diode D1 other end, diode D1 ' it is another End, resistance R3 one end, resistance the R3 other end and resistance R4 one end, one end phase of the resistance R4 other end and electric capacity C15 Even, the electric capacity C13 other end is connected with support chip J2.

The utility model medium-high frequency arc striking circuit is as follows：Chip U2 VREF ports are divided into two-way, respectively with resistance R11's One end, resistance R4 one end are connected, and the resistance R11 other end is divided into two-way, respectively the VFB ports with chip U2, support chip J5 No. 1 port is connected, support chip J5 No. 2 ports ground connection, support chip J5 No. 3 ports and electric capacity C14 one end phase Even, electric capacity C14 other end ground connection, chip U2 VCC ports are connected with chip U4 VOUT ports, chip U4 GND ports Ground connection, chip U4 VIN ports are connected with 28V power supplys, chip U2 GND ports ground connection, chip U2 OUT terminal mouth and resistance R2 One end be connected, the resistance R2 other end is divided into two-way, and one end with resistance R17, FET T3 gate pole are connected respectively, electricity R17 other end ground connection is hindered, FET T3 drain electrode is connected with transformer T4 No. 1 port, transformer T4 No. 2 ports It is connected with 28V power supplys, transformer T4 No. 3 ports are divided into two-way, respectively No. 2 ports with G2 ports, electric capacity C15 one end phase Even, the electric capacity C15 other end is with supporting chip J7 No. 1 port to be connected, and support chip J7 No. 2 ports are divided into two-way, respectively The HV ports of No. 1 port, transformer T4 with G2 ports are connected, and FET T3 source electrode is divided into two-way, respectively with resistance R18 One end, resistance R16 one end be connected, resistance R18 other end ground connection, the resistance R16 other end and chip U2 ISENSE Port is connected, and the resistance R4 other end is connected with chip U2 RT/CT ports.

Control panel circuit is as follows in the utility model：Peripheral interface J28 No. 1 port is R_LINK ports, is divided into two-way, One end with electric capacity C135, resistance R154 one end are connected respectively, and No. 2 ports of the peripheral interface J28 are P_LINK ports, It is divided into two-way, one end with electric capacity C136, resistance R156 one end are connected respectively, and No. 3 ports of the peripheral interface J28 are KEY1 ports, be connected with electric capacity C137 one end, peripheral interface J28 No. 4 ports are 24VP ports, are divided into two-way, respectively with Resistance R155 one end, electric capacity C139 one end is connected, and peripheral interface J28 No. 5 ports are GND_SIGNAL ports, with electric capacity C138 one end is connected, and peripheral interface J28 No. 6 ports are Remote_POT ports, are connected with electric capacity C140 one end, periphery Interface J28 No. 7 ports are UP ports, are connected with electric capacity C141 one end, and peripheral interface J28 No. 8 ports are DOWN ports, It is connected with electric capacity C142 one end, the other end of the electric capacity C135 ~ C142 is harness-integrated to be connected with J27 ports, institute's resistance The R155 other end is divided into three tunnels, and the other end with 24V power supplys, the resistance R156 other end, resistance R154 is connected respectively, described KEY1 ports are connected with photoelectrical coupler U14 No. 2 ports, photoelectrical coupler U14 No. 1 port and resistance R49 one end phase Even, the resistance R49 other end is connected with 24V power supplys, and photoelectrical coupler U14 No. 4 ports are connected with 5V power supplys, photoelectrical coupler U14 No. 3 ports are divided into two-way, and one end with arc welding gun switch port, resistance R45 is connected respectively, resistance R45 another termination Ground；The R_LINK ports are connected with photoelectrical coupler U20 No. 2 ports, photoelectrical coupler U20 No. 1 port and resistance R79 One end be connected, the resistance R79 other end is connected with 24V power supplys, and photoelectrical coupler U20 No. 4 ports are connected with 5V power supplys, light Electric coupler U20 No. 3 ports are divided into two-way, and one end with R_LINK_F ports, resistance R78 is connected respectively, and resistance R78's is another One end is grounded；The P_LINK ports are connected with photoelectrical coupler U21 No. 2 ports, photoelectrical coupler U21 No. 1 port with Resistance R81 one end is connected, and the resistance R81 other end is connected with 24V power supplys, photoelectrical coupler U21 No. 4 ports and 5V power supplys It is connected, photoelectrical coupler U21 No. 3 ports are divided into two-way, and one end with P_LINK_F ports, resistance R80 is connected respectively, resistance R80 other end ground connection；The UP ports are connected with photoelectrical coupler U23 No. 2 ports, photoelectrical coupler U23 No. 1 port It is connected with resistance R104 one end, the resistance R104 other end is connected with 24V power supplys, photoelectrical coupler U23 No. 4 ports and 5V Power supply is connected, and photoelectrical coupler U20 No. 3 ports are divided into two-way, and one end with GUN_UP ports, resistance R103 is connected respectively, Resistance R103 other end ground connection；The DOWN ports are connected with photoelectrical coupler U22 No. 2 ports, photoelectrical coupler U22's No. 1 port is connected with resistance R84 one end, and the resistance R84 other end is connected with 24V power supplys, photoelectrical coupler U22 No. 4 ends Mouthful be connected with 5V power supplys, photoelectrical coupler U22 No. 3 ports are divided into two-way, respectively with GUN_DOWN ports, resistance R83 one End is connected, resistance R83 other end ground connection；The 24V power supplys are also connected with photoelectrical coupler U45 No. 4 ports, photoelectric coupling Device U45 No. 3 ports are connected with resistance R160 one end, and the resistance R160 other end is divided into two-way, respectively with resistance R159's One end, triode Q17 base stage are connected, and the resistance R159 other end is connected with signal ground, triode Q17 emitter stage and signal Ground is connected, and triode Q17 colelctor electrode is connected with HF2 No. 1 port, and HF2 No. 2 ports are connected with signal ground, photoelectric coupling Device U45 No. 2 ports ground connection, photoelectrical coupler U45 No. 1 port are connected with resistance R171 one end, and resistance R171's is another End is connected with HF ports；The 24V power supplys are divided into one end respectively with resistance R175 of three tunnels, diode D43 one end, gas circuit connect Mouth GAS2 No. 1 port is connected, and the resistance R175 other end is divided into three tunnels, respectively one end with resistance R177, photoelectrical coupler U47 No. 4 ports, FET T14 gate pole are connected, and FET T14 drain electrode is divided into two-way, respectively with diode The D43 other end, air-path interface GAS2 No. 2 ports are connected, and the resistance R177 other end is divided into three tunnels, respectively with FET T14 source electrode, signal ground, photoelectrical coupler U47 No. 3 ports are connected, photoelectrical coupler U47 No. 2 ports ground connection, photoelectricity coupling Clutch U47 No. 1 port is connected with resistance R176 one end, and the resistance R176 other end is connected with gas trap；The 24V power supplys It is divided into one end, diode D42 one end, ZNFJ2 No. 1 port of three tunnels respectively with resistance R172 to be connected, resistance R172's is another One end is divided into three tunnels, respectively one end with resistance R174, photoelectrical coupler U46 No. 4 ports, FET T15 gate pole phase Even, FET T15 drain electrode is divided into two-way, and the other end with diode D42, ZNFJ2 No. 2 ports are connected respectively, electricity The resistance R174 other end is divided into three tunnels, respectively the source electrode with FET T15, signal ground, photoelectrical coupler U46 No. 3 ports It is connected, photoelectrical coupler U46 No. 2 ports ground connection, photoelectrical coupler U46 No. 1 port is connected with resistance R173 one end, electricity The resistance R173 other end is connected with ZNFJ ports；The 24V power supplys are divided into one end respectively with resistance R178 of three tunnels, diode D44 one end, water route interface Water2 No. 1 port are connected, and the resistance R178 other end is divided into three tunnels, respectively with resistance R180 One end, photoelectrical coupler U48 No. 4 ports, FET T16 gate pole be connected, FET T16 drain electrode is divided into two Road, respectively the other end with diode D44, water route interface Water2 No. 3 ports be connected, the resistance R178 other end is divided into three Road, respectively the source electrode with FET T16, signal ground, photoelectrical coupler U48 No. 3 ports be connected, the 2 of photoelectrical coupler U48 Number port ground connection, photoelectrical coupler U48 No. 1 port are connected with resistance R179 one end, the resistance R179 other end and water route Relay is connected；The 5V power supplys are connected with control chip U4 VIN ports, control chip U4 GND ports ground connection, control core Piece U4 VOUT ports are connected with resistance R183 one end, the resistance R183 other end and one end phase of LED 5 Even, the other end ground connection of LED 5；The one end of the 5V power supplys also with resistance R181 is connected, and resistance R181's is another End is divided into two-way, and one end with electric capacity C30, No. 1 port of JS2 ports are connected respectively, and the electric capacity C30 other end is divided into two-way, No. 2 ports with ground, JS2 are connected respectively；Control chip U8 VIN ports are connected with VCC ports, control chip U8 GND Port is divided into three tunnels, and one end with ground, electric capacity C158 one end, LED 6 is connected respectively, light emitting diode The LED6 other end is connected with resistance R184 one end, and the resistance R184 other end is divided into two-way, another with electric capacity C158 respectively One end, chip U8 VOUT ports are connected；Control board chip U9 SHDN ports are divided into four tunnels, respectively one end with resistance R4, Resistance R22 one end, electric capacity C6 one end, diode D22 one end are connected, and the electric capacity C6 other end is divided into two-way, respectively with The resistance R22 other end, ground are connected, and the diode D22 other end is connected with resistance R208, and the resistance R4 other end is divided into five Road, respectively one end with resistance R27, resistance R7 one end, diode D5 one end, diode D6 one end, the one of resistance R26 End is connected, and the diode D5 other end is divided into two-way, and one end with diode D7, No. 1 port of HGQ1 ports are connected respectively, and two The pole pipe D6 other end is divided into two-way, and one end with diode D8, No. 2 ports of HGQ1 ports are connected respectively, and resistance R7's is another One end is divided into three tunnels, and the other end with diode D7, the diode D8 other end, ground are connected respectively, the resistance R27 other end It is connected with VCC ports, the resistance R26 other end is connected with CT ports, and control chip U9 COMP ports are connected with ERA- ports, Control chip U9 ERA+ ports are connected with resistance R199 one end, and the resistance R199 other end is divided into four tunnels, respectively with resistance R205 one end, resistance R196 one end, diode D18 one end, resistance R190 one end are connected, the resistance R205 other end It is connected with triode Q6 colelctor electrode, triode Q6 grounded emitter, triode Q6 base stage is connected with resistance R211, resistance R196 the other end ground connection, diode D18's is grounded anotherly, and the resistance R190 other end is divided into three tunnels, respectively with electric capacity C39 One end, voltage-regulator diode VD2 one end, amplifier U51A No. 1 port be connected, the electric capacity C39 other end is with resistance R30's One end is connected, and the resistance R30 other end is divided into seven tunnels, respectively one end with voltage-regulator diode VD2, amplifier U51A No. 2 ends Mouth, diode D21 one end, diode D20 one end, resistance R197 one end, resistance R200 one end, the one of resistance R186 End is connected, and the diode D20 other end is divided into three tunnels, respectively with ground, the diode D21 other end, No. 3 of amplifier U51A Port is connected, and the resistance R197 other end is connected with HALL ports, and the resistance R186 other end is connected with resistance R185 one end, The resistance R185 other end is connected with diode D32 one end, and the diode D32 other end is divided into three tunnels, respectively with resistance The R200 other end, amplifier U53B No. 7 ports, resistance R191 one end are connected, and the resistance R191 other end is divided into three tunnels, One end with resistance R213, resistance R28 one end, amplifier U53B No. 6 ports are connected respectively, the resistance R213 other end with Swept resistance VR6 sliding end is connected, and swept resistance VR6 one end is connected with VCC ports, the swept resistance VR6 other end with- VCC ports are connected, and amplifier U53B No. 5 ports ground connection, the resistance R28 other end is connected with swept resistance VR7 sliding end, Swept resistance VR7 one end is divided into two-way, respectively No. 14 ports with amplifier U50D, amplifier U50D No. 13 port phases Even, swept resistance VR7 other end ground connection, amplifier U50D No. 12 ports are connected with TO10 ports, and the HALL ports are also It is connected with resistance R51 one end, the resistance R51 other end is divided into three tunnels, respectively one end with resistance R130, resistance R131, electricity Resistance R136 is connected, resistance R130 other end ground connection；Control chip U9 GND ports ground connection, control chip U9 VC ports with Resistance R2 one end is connected, and the resistance R2 other end is connected with VCC ports, control chip U9 VIN ports and VCC ports phase Even, control chip U9 CS/SS ports are connected with SS ports, control chip U9 AOUT ends and No. 4 ports of Driver1 chips PWM-A is connected, and control chip U9 BOUT ends are connected with No. 5 port PWM-B of Driver1 chips, control chip U9 CT ends Mouth is connected with triode Q3 base stage, and triode Q3 colelctor electrode is connected with VREF ports, and triode Q3 emitter stage is divided into three Road, respectively one end with electric capacity C126, resistance R31 one end, electric capacity C125 one end be connected, the electric capacity C125 other end and electricity Resistance R193 one end is connected, and the resistance R193 other end is divided into five tunnels, respectively the other end with resistance R31, the one of resistance R24 End, the electric capacity C125 other end, resistance R14 one end, control chip U9 CS+ ports are connected, resistance the R24 other end and CT Port is connected, and resistance R14 other end ground connection, control chip U9 CS- ports are divided into three tunnels, respectively with the one of resistance R192 End, ground, FET T18 source electrode are connected, and FET T18 gate pole is divided into two-way, respectively one end with resistance R209, Diode D45 one end is connected, and resistance R209 other end ground connection, the diode D45 other end is connected with BP ports, field-effect Pipe T18 drain electrode is connected with resistance R215 one end, and the resistance R215 other end is divided into two-way, another with resistance R192 respectively One end, control chip U9 RT ports are connected, and No. 1 port of the Driver1 chips is connected with VCC ports, Driver1 chips No. 2 ports be-VCC ports, the BP ports are connected with amplifier U36C No. 8 ports, amplifier U36C No. 9 ports point For three tunnels, one end with diode D25, diode D26 one end, J11 No. 3 ports are connected respectively, and diode D25's is another End be divided into two-way, No. 1 port with VCC ports, J11 is connected respectively, and the diode D26 other end is divided into two-way, respectively with- VCC ports, J11 No. 2 ports are connected, and amplifier U36C No. 10 ports are divided into two-way, respectively one end with resistance R135, electricity Resistance R134 one end is connected, and resistance R135 other end ground connection, the resistance R134 other end is connected with VCC ports, J11 ports No. 4 port ground connection；Control chip U38 No. 1 port is connected with signal ground, and control chip U38 No. 2 ports are with resistance R140's One end is connected, and the resistance R140 other end is connected with amplifier U37B No. 7 ports, amplifier U37B No. 5 ports and periphery Port PO T-phase connects, amplifier U37B No. 6 ports are divided into two-way, respectively No. 4 ports with control chip U38, resistance R141 One end is connected, and the resistance R141 other end is connected with signal ground, and control chip U38 No. 5 ports are divided into two-way, respectively with resistance R144 one end, amplifier U39B No. 5 ports are connected, resistance R144 other end ground connection, amplifier U39B No. 6 ports point For two-way, one end with resistance R145, amplifier U39B No. 7 ports are connected respectively, and the resistance R145 other end is divided into two-way, One end with resistance R146, voltage-regulator diode Z4 one end are connected respectively, resistance R146 other end ground connection, voltage-regulator diode Z4 The other end ground connection, control chip U38 No. 6 ports are connected with VCC ports；Control chip U43 No. 1 port and signal ground phase Even, control chip U43 No. 2 ports are connected with resistance R148 one end, the resistance R148 other end and No. 1 of amplifier U40A Port is connected, and amplifier U40A No. 2 ports are divided into two-way, respectively one end with resistance R149, control chip U43 No. 4 ends Mouth is connected, and the resistance R149 other end is connected with signal ground, amplifier U40A No. 3 ports and swept resistance VR5 sliding end It is connected, swept resistance VR5 one end is connected with resistance R150 one end, and the swept resistance VR5 other end is connected with signal ground, electricity The resistance R150 other end is divided into two-way, and No. 1 port with VFB1 ports, resistance R167 one end are connected respectively, and the 2 of VFB1 ports Number port is connected with signal ground, and the resistance R167 other end is divided into two-way, respectively one end with resistance R168, voltage-regulator diode Z48 one end is connected, and the resistance R168 other end is connected with signal ground, and the voltage-regulator diode Z48 other end is divided into two-way difference No. 1 port of one end, photoelectrical coupler U41A with resistance R169 is connected, and the resistance R169 other end is divided into two-way, respectively with Signal ground, photoelectrical coupler U41A No. 2 ports are connected, photoelectrical coupler U41A No. 3 ports ground connection, photoelectrical coupler U41A No. 4 ports be connected with FET T13 source electrode, FET T13 drain electrode is connected with SS ports, FET T13 Gate pole connected with resistance R170；No. 1 port of the control panel GND1 ports is connected with 5V power supplys, control panel GND1 ports No. 2 ports are connected with resistance R54 one end, and the resistance R54 other end is connected with 5V power supplys, No. 3 ends of control panel GND1 ports Mouth ground connection；No. 1 port of control panel OT4 ports is divided into three tunnels, respectively one end with resistance R137, the one of voltage-regulator diode Z46 End, electric capacity C122 one end are connected, and the resistance R137 other end is connected with 5V power supplys, and the electric capacity C122 other end is divided into three tunnels, The other end with voltage-regulator diode Z46, ground, No. 2 ports of control panel OT4 ports are connected respectively；The 1 of control panel OT3 ports Number port is divided into three tunnels, and one end with resistance R138, voltage-regulator diode Z47 one end, electric capacity C121 one end are connected respectively, electricity The resistance R138 other end is connected with 5V power supplys, and the electric capacity C121 other end is divided into three tunnels, another with voltage-regulator diode Z47 respectively End, ground, No. 2 ports of control panel OT3 ports are connected.

Auxiliary power circuit is as follows in the utility model：Chip U5 VFB ports are divided into five tunnels, respectively with photoelectrical coupler U14B No. 3 ports, electric capacity C22 one end, electric capacity C23 one end, resistance R17 one end, resistance R13 one end is connected, electricity The resistance R17 other end is divided into two-way, and the other end with signal ground, electric capacity C23 is connected respectively, and the resistance R13 other end is divided into two Road, respectively the other end with electric capacity C22, chip U5 COMP ports be connected, chip U5 RT/CT ports are divided into two-way, respectively One end, electric capacity C26 one end with resistance R21 are connected, and the electric capacity C26 other end is connected with signal ground, the resistance R21 other end It is divided into two-way, one end with electric capacity C52, chip U5 VREF ports are connected respectively, electric capacity the C52 other end and signal ground phase Even, chip U5 ISNS ports are divided into two-way, and one end with electric capacity C29, resistance R22 one end are connected respectively, and electric capacity C29's is another One end is connected with signal ground, and the resistance R22 other end is connected with CFB ports, and chip U5 VCC ports are divided into two-way, respectively with V Port, electric capacity C24 one end are connected, and the electric capacity C24 other end is connected with signal ground, chip U5 GND ports and signal ground phase Even, chip U5 OUT terminal mouth is connected with PWM port, and PWM port is connected with resistance R23 one end, the resistance R23 other end and FET T6 gate pole is connected, and FET T6 source electrode is divided into three tunnels, respectively one end with resistance R29, the one of resistance R30 End, CFB ports are connected, and the resistance R30 other end is divided into two-way, and the other end with resistance R29, signal ground are connected respectively, field effect Should pipe T6 drain electrode be divided into two-way, one end with diode D30, transformer T5 No. 8 ports are connected respectively, diode D30 The other end be divided into three tunnels, one end with resistance R26, resistance R20 one end, electric capacity C25 one end are connected respectively, resistance R26 The other end be divided into four tunnels, respectively the other end with resistance R20, the electric capacity C25 other end, VIN ports, No. 10 of transformer T5 Port is connected, and transformer T5 No. 12 ports are connected with diode D6 one end, and the diode D6 other end is divided into two-way, respectively One end, resistance R25 one end with electric capacity C51 are connected, and the resistance R25 other end is connected with V port, the electric capacity C51 other end It is connected with signal ground, transformer T5 No. 14 ports are divided into two-way, and one end with signal ground, electric capacity C55 is connected respectively, electric capacity C55 other end ground connection, transformer T5 No. 7 ports are connected with diode D4 one end, and the diode D4 other end is divided into three Road, respectively one end with electric capacity C45, resistance R67 one end, No. 1 port of FAN1 ports be connected, No. 2 ports of FAN ports point For four tunnels, the other end with resistance R67, ground, the electric capacity C45 other end, transformer T5 No. 6 ports are connected respectively, transformation Device T5 No. 3 ports are connected with diode D26 one end, and the diode D26 other end is divided into two-way, respectively with electric capacity C47's One end, chip U13 VIN ports are connected, and chip U13 VOUT ports are divided into three tunnels, respectively one end with electric capacity C49, resistance R66 one end, electric capacity C50 one end is connected, and the electric capacity C50 other end is divided into Shi Erlu, respectively one end with electric capacity C57, electricity Hold C56 one end, resistance R69 one end, ground, photoelectrical coupler U14A No. 2 ports, electric capacity C49 one end, resistance R68 One end, chip U13 GND ports, resistance R63 one end, electric capacity C47 one end, electric capacity C48 one end, the 2 of transformer T5 Number port is connected, and the electric capacity C56 other end is connected with the electric capacity C57 other end, photoelectrical coupler U14A No. 1 port and resistance R64 one end is connected, and the resistance R64 other end is divided into two-way, respectively the other end with resistance R69, the one of voltage-regulator diode Z20 End is connected, and the voltage-regulator diode Z20 other end is divided into three tunnels, respectively the other end with resistance R63, the electric capacity C48 other end, two Pole pipe D32 one end is connected, and the diode D32 other end is connected with transformer T5 No. 1 port, the VIN ports also with electricity Resistance R75 one end is connected, and the resistance R75 other end is divided into two-way, respectively one end with resistance R74, the one of voltage-regulator diode Z2 End is connected, and the voltage-regulator diode Z2 other end is divided into one end respectively with resistance R24 of two-way, triode Q5 base stage is connected, and three Pole pipe Q5 colelctor electrode is connected with COMP ports, and triode Q5 emitter stage is divided into three tunnels, respectively the other end with resistance R24, Signal ground, the resistance R74 other end are connected；The one end of the CFB ports also with resistance R28 is connected, the resistance R28 other end point For two-way, one end with resistance R27, IGCT Q2 G ports are connected respectively, and the resistance R27 other end is connected with signal ground, brilliant Brake tube Q2 K ports are connected with signal ground, and IGCT Q2 A ports are connected with V port；The V port also with resistance R62 one End is connected, and the resistance R62 other end is divided into three tunnels, and one end with VIN ports, resistance R70 one end, electric capacity C31 is connected respectively, The resistance R70 other end is connected with diode D33 one end, and the diode D33 other end is connected with No. 1 port of J2 ports, The electric capacity C31 other end is divided into two-way, and No. 2 ports with signal ground, J2 ports are connected respectively；The J37 ports of power supply chip No. 1 port be connected with diode D34 one end, the diode D34 other end is connected with resistance R77 one end, resistance R77's The other end is divided into two-way, and one end with resistance R55, photoelectrical coupler U15 No. 1 port are connected respectively, the resistance R55 other end It is divided into four tunnels, respectively one end with resistance R54, piezo-resistance R59 one end, photoelectrical coupler U16 No. 2 ports, photoelectricity coupling Clutch U15 No. 2 ports are connected, and the piezo-resistance R59 other end is connected with No. 3 ports of the J37 ports of power supply chip, electricity The resistance R54 other end is divided into two-way, and one end with resistance R76, photoelectrical coupler U16 No. 1 port are connected respectively, resistance R76 The other end be connected with diode D35 one end, No. 5 ports of the diode D35 other end and the J37 ports of power supply chip It is connected, photoelectrical coupler U16 No. 4 ports are divided into three tunnels, respectively one end with resistance R57, electric capacity C37 one end, field-effect Pipe T8 gate pole is connected, and the resistance R57 other end is divided into two-way, and one end with resistance R71,15V power supplys are connected respectively, resistance The R71 other end is divided into three tunnels, respectively the drain electrode with FET T8, resistance R61 one end, FET T7 gate pole phase Even, FET T8 source ground, the resistance R61 other end is divided into three tunnels, respectively the drain electrode with FET T7, resistance R38 one end, photoelectrical coupler U10 No. 1 port are connected, and FET T7 source electrode is divided into two-way, respectively with photoelectric coupling Device U10 No. 2 ports, ground are connected, and photoelectrical coupler U10 No. 3 ports are connected with No. 2 ports of QX1 ports, photoelectric coupling Device U10 No. 4 ports are connected with No. 1 port of QX1 ports, and the resistance R38 other end is connected with 15V power supplys, the electric capacity C37 The other end be divided into three tunnels, No. 3 ports with photoelectrical coupler U16, electric capacity C38 one end, the 4 of photoelectrical coupler U15 respectively Number port is connected, and the electric capacity C38 other end is divided into two-way, is connected respectively with photoelectrical coupler U15 No. 3 ports, ground.

In specific implementation, the utility model is controlled by single-chip microcomputer, and software is added on the basis of hardware circuit The function of means butt welding machine strengthened, when the design of protection circuit, both using the salvo of hardware, also add The monitoring and protection of software, on preceding control panel, add numeral method function and light emitting diode indicator function, Prompting can be wherein provided in charactron parameter adjustment before welding and welding process, it is digital such as when current regulation The registration of pipe is the current given value of current value of adjustment parameter, and the welding current of current generation can be also shown in welding process； Wherein light emitting diode plays indicative function in parameter regulation and welding process before welding, is such as welded under manual welding state When connecing the regulation of parameter, when adjusting hot start electric current, accordingly with luminous corresponding to hot start mark on facial mask Diode will be lighted, and when welding enters normal welded condition, indicate that the light emitting diode of welding current will point Bright, when welding machine enters protection or occurs situations such as water shortage, its corresponding indicator lamp will be lighted, play warning and The purpose of prompting；In addition the utility model is also additionally arranged the numeral method function of a display magnitude of voltage, in the unloaded state Floating voltage numerical value can be shown, then can be with real-time display weldingvoltage output valve in welding process.The utility model only needs The welding machine that can produce different rated current in the case of by dial-up dish and a small amount of element of change has difference in functionality produces Product.

Each PCB of the utility model butt welding machine and the overall structure of welding machine are optimized, designed production PCB and welding machine be all to be subjected to the long-term test in market, and be proved to be the high welding machine of reliability, practicality. In the design such as it is fast recover output cowling panel A1, IGBT inversion plate A5, control panel 2, preceding control panel 4 our company other one It can be used on a little types, there is certain versatility, preceding control panel 4 therein is by the different choice of dial-up dish, i.e., The product of different size model can be formed.It is the preceding control panel 4, high frequency run-on tab 22, three-phase electricity source plate 21, control panel 2, fast The element recovered on the pcb boards such as output cowling panel A1, IGBT inversion plate A5, high-frequency absorption plate 16 is all to use SMT mount technologies Highly-efficient processing is carried out, ensures the quality and aesthetic property of finished product.

From the point of view of the control device of function, the utility model mainly realize three phase mains input control, rectifying and wave-filtering, Rectification and output, the argon arc welding high frequency starting the arc and high-frequency absorption are controlled, opened again for IGBT inversion controls, transformation, fast recovery diode Acquisition, the zero load of manual electric arc welding parameter, welding current, hot start electric current, Arc and the DC argon arc welding in powered-down source and straight Supplied gas before stream pulsed argon arc welding parameter the time, after supply gas that time, electric current are slow to be risen and ramp down time would, striking and receive arc current, electric arc Thrust, pulse frequency and dutycycle,（Background current and valley point current）The work such as control.In the effect of control circuit and program Under, realize the direct current of butt welding machine and the control requirement of the welding parameters of DC pulse argon arc welding and manual electric arc welding.

Operation principle of the present utility model is summarized as follows：Nominal input voltage of the present utility model is three-phase 380V, outside It is 532V to connect power supply input voltage after over commutation, and this voltage directly to electrochemical capacitor if charging, it may appear that bigger Current spike, to avoid current spike from impacting electrochemical capacitor and circuit, so the processing side of the utility model welding machine Formula is increase soft starting circuit, and the partial circuit is mainly by electrochemical capacitor C1, diode D1 ~ D2, resistance R1 ~ R2, voltage-stabiliser tube ZD1 ~ ZD2, relay J21 ~ J23, PTC resistor RT1 ~ RT2 compositions.Charged in the welding machine start starting stage to main circuit electrochemical capacitor When be loop by PTC, become big characteristic as temperature raises using PTC resistor value, suppress electrochemical capacitor charging current Peak value, after the VCC transmitted on drive connection line DRV is charged to C1 electric capacity, when reaching breakdown ZD1 current potential, Metal-oxide-semiconductor Q14C, E both ends turn on, so that relay coil obtains electric, the normally opened contact of relay closure, are formed with PTC branch roads Form in parallel, according to shunt resistance rule, main circuit current is by the loop of relay contact to the electrolysis electricity on main circuit Appearance is charged, and machine enters normal mode of operation.Main circuit electrochemical capacitor is increased by the way of three groups of parallel connections of connecting two-by-two Big pressure-resistant and flow-resistant capacity, when series capacitance, it is possible to occur in which electric capacity both ends if dealt with improperly Magnitude of voltage exceedes that its is pressure-resistant, the voltage very little that another electric capacity both ends is got this occurrence of.In the utility model Welding machine then using an identical resistance on the electric capacity both ends of two series connection are in parallel respectively, ensures electricity by the partial pressure of resistance The voltage at electric capacity both ends is solved in its normal range of operation.Direct current after external power supply rectification supplies three-phase electricity source plate simultaneously 21, the low tensions such as+24V, -15V ,+15V of other circuits needs are provided by switch transformer and its peripheral electron component Source, mainboard, main transformer primary current detection Hall current sensor, main transformer, fast recovery output cowling panel, temperature-sensitive electricity Resistance, inductance, high-frequency arc strike coil, high frequency run-on tab, high-frequency absorption plate etc. form inversion major loop of the present utility model.Its is specific Implementation is as follows：By single tube IGBT module in the case where being amplified the control of PWM ripples of processing through overdrive circuit, high pressure DC conversion is the medium frequency alternating current for reaching tens KHz, the effect of main transformer be realize medium frequency alternating current decompression and The purpose of secondary High-current output, fast-recovery commutation output board, then it is by the friendship of the secondary output low-voltage, high-current of main transformer Stream electricity is converted into direct current, is filtered to obtain using inductance for the direct current after rectification and exports than shallower direct current Stream, eventually through being connected to fast public plug in the both positive and negative polarity Europe of welding machine.

Fig. 6 is rectifying output circuit schematic diagram of the present utility model, and access in parallel is led respectively by T-A and T-A1, T-B and T-B1 The secondary output of transformer.OUT1 and OUT2 is coupled in parallel to the cathode output end of welding machine.The major function of this circuit is to realize The rectification of transformer secondary output alternating current, exchange is converted into direct current.As seen from the figure, fast recovery output cowling panel is extensive soon by 4 groups Multiple diode (led) module composition, each group is equipped with RC series connection resistance capaciting absorpting circuits, amounts to 8 diode groups（STTH60P03SW） Module, each STTH60P03SW inside modules are formed by two identical fast recovery diodes are in parallel, in order to Increase its rated current for allowing to pass through.The main effect played in this circuit arrangement of presence of RC series connection resistance capaciting absorpting circuits is The peak voltage of fast recovery diode conducting moment is reduced, prevents too high peak voltage from causing fast recovery diode that event occurs Barrier, resistance capaciting absorpting circuit is one of important measure of welding machine guaranteed reliability.For such as being served as using fast recovery diode For the electric welding machine of secondary rectifying device, for the smaller machine of rated current, single tube can be used to recover two poles soon Pipe realizes the purpose of rectification, if the machine of high current, if this welding machine rated current is 400A, can use high current grade 's（Such as 60A）Fast recovery diode module realize the purpose of rectification.

Fig. 7 is hf arc starting circuit schematic diagram of the present utility model, and hf arc starting circuit is mainly used for realizing argon arc welding When the contactless striking of high frequency and design.Under manual electric arc welding pattern, the effect of control circuit is will not to form high frequency Striking, high pressure is needed during the argon arc welding starting the arc, in order to produce high pressure on the basis of manual electric arc welding and be transported to output In loop, design and employ circuit shown in Fig. 7.As shown in Figure 7, hf arc starting circuit is mainly by U2 (UC3845), field-effect Pipe T3 (IRF640N), U4（CJ78L15）, high-frequency step-up transformer T4, during spark amplifier and some resistance and electric capacity etc. Composition.Wherein two cores insert the high-frequency inductor 18 that shell J5 is connected to welding machine output main circuit, and three cores are inserted shell J7 and are connected on control panel, When welding machine selects argon arc welding pattern（Including DC argon arc welding and DC pulse argon arc welding）When, and when arc welding gun switch closes, When detecting arc welding gun switch closure signal according to single-chip microcomputer, 1,3 pin that three cores on high frequency run-on tab 22 insert shell J 5 are led It is logical, it is provided simultaneously with 28V voltages.Wherein 3 pin voltage signals pass through three-terminal voltage-stabilizing chip U3（CJ78L15）U1 is provided（UC3845）'s Operating voltage, 1 pin voltage signal and U2（UC3845）A reference source compare so that U2（UC3845）6 pin output voltage signals Turn on FET T3 (IRF640N), high-frequency step-up transformer T4 primary sides have electric current to flow through, work as U2（UC3845）3 pin The voltage signal and U2 of receiving（UC3845）2 pin Setting signals it is identical when, U2（UC3845）Shut-off, striking terminate.Work as spark After the voltage at amplifier both ends reaches its breakdown the air gap, electric capacity C8, C9 can export the high-frequency inductor 18 of major loop with welding machine Vibration is formed, after the boosting twice by the high frequency transformer on high frequency run-on tab 22 and high-frequency inductor, argon can be caused Several millimeters of the air gap in arc-welding welding gun between tungsten electrode and workpiece, so as to；Ignite welding arc immediately, realizes high-frequency arc strike Welding.This part is the operation principle of the hf arc starting circuit of the utility model welding machine.

The high frequency of the utility model welding machine receives arc circuit, mainly by 1 piezo-resistance, 4 electric capacity, 1 resistance and one Diode forms.OUT+ and OUT- passes through fast work socket in the both positive and negative polarity Europe of screw connection to output respectively.

IGBT inversion and its drive control circuit theory diagrams of Fig. 3 ~ 4 for the utility model welding machine, TR2 are driving transformation Device, there are a primary output and 4 secondary outputs.Primary output is by control chip on board U9（UC3846）The PWM ripples provided Signal, signal are to insert shell by seven cores to transmit, and the push-pull circuit formed by two groups of triodes is linked into driving transformation Device TR2 primary, driving transformer TR2 secondary with devices such as diode, voltage-stabiliser tube, resistance, electric capacity by being cooperatively configured IGBT 4 groups of drive control circuits, every group includes two-way identical drive signal, driving transformer TR2 3,4 taps and 5,6 The drive signal of tap is synchronous, and the drive signal of two further pairs tap is identical, and this two groups of drive signals are phases It is anti-, in control process this two groups of drive signals in the presence of a dead time.Made in the design of the utility model welding machine Inversion device is single tube IGBT（STGW40H120DF2）It is voltage-type device, but due to the presence of grid capacitance, therefore need Want certain driving power.The driving force of simple UC3846 output PWM ripples insufficient for IGBT can normal work, So need IGBT drive circuit to be amplified its driving force, and 8 of the secondary output end use in driving transformer TR2 Road drive signal rather than 4 road drive signal the reason for be also increase IGBT driving reliability.

Figure 11 is control panel circuit of the present utility model, and digital DC argon arc welding front panel circuitry part is by U25 (TM1629B) numeral method chip, common cathode 38 segment numeral pipes U4 and U5, dial-up dish J9, diode D20 ~ D31, luminous Diode (LED) 27, LED53 and LED60 ~ LED25, resistance R46 ~ R47 and R59 ~ R61, electric capacity C10, button SW4 ~ SW6, rotation The elements such as encoder U14 form.It is to pass through J9 between the digital DC argon arc welding front panel and control panel（10 cores insert shell）Enter The transmission of row information.The voltage of digital DC argon arc welding front panel work is provided by the 5 of J9,6,8 pin.The charactron and hair The position of optical diode selects signal to be provided by U25 (TM1629B) 1,2,4,5,31,32 pin, when to signal be low potential when its Corresponding charactron is in the state that can be switched on, charactron or a series of light emitting diodes of being controlled respectively to signal, This control mode is more conventional, as long as the reader for having certain hardware programming ability can know control from circuit diagram Mode, so not repeating one by one herein, refer to figure numbers DC argon arc welding front panel circuitry part.The digital DC argon Arc-welding front panel is on some other machine of our company and general, includes the weldering of some same types of different rated current Machine, the J9（Dial-up dish）Be exactly by way of gating, in a program discriminating digit DC argon arc welding front panel before this pair The size for the load current value answered, according to J9（Dial-up dish）Front three binary combination respectively can be by digital DC argon arc welding The load current value of front panel is set to 160A, 180A, 200A, 250A, 315A, 400A, its corresponding binary number be 000, 001、010、011、100、101.The digital DC argon arc welding operation of front panel mode has specifically on the facial mask of front panel Mark, the button SW4 ~ SW6 is that facial mask is marked with the button of hand-type image, is respectively intended to control the type of cooling of welding machine Selection, welding function selection and welding machine way choice；3, the left side indicator lamp existed side by side of facial mask is the digital direct Argon arc welding front panel light emitting diode LED83 ~ LED85 is flowed, the state that manual welding is switched in welding function selection is strobed, its Welder is correspond to respectively to indicate in the regulation of welding parameter hot start, welding current, Arc under carrying out manual welding pattern Lamp；12 indicator lamps that facial mask middle body is described with graphic structure are digital DC argon arc welding front panel light-emitting diodes Pipe LED68 ~ LED79, it is strobed when welding function selection is switched to argon arc welding, and the welding manner welded regarding length Selection is different, and its light emitting diode gated is also different, is specially under argon arc welding function selection state and switches to The LED 53, LED27 and LED60 ~ LED67 are all gated when under 4T bond patterns, and it adjusts argon arc in welder The different phase of the welding parameter of weldering, which is lighted, plays indicative function, corresponds to initial current, slow rise time, peak point current, base respectively Value electric current, ramp down time would, it is preceding supply gas, after supply gas, the unlatching of no pulse, pulse mode, dutycycle, pulse frequency, receive arc current, its Middle background current, dutycycle, pulse frequency adjust parameter regulation of being only allowed for access under strobe pulse pattern opening State, i.e., under the pattern of selection no pulse, after peak point current parameter regulation terminates, the setting of ramp down time would is entered, Argon arc welding is switched to 80 ~ LED82 of LED when under 2T bond patterns and gated, and it adjusts the welding of argon arc welding in welder The different phase of parameter, which is lighted, plays indicative function, corresponds to slow rise time, peak point current, background current, ramp down time would, preceding respectively Supply gas, after supply gas, the unlatching of no pulse, pulse mode, dutycycle, pulse frequency.Set to each specific welding parameter U14 is to rely on when putting（Encoder）、U25（TM1629B）And program Collaborative Control, embodiment is to lead to The mode of procedure stipulation parameter values increase and decrease is crossed, rotary encoder knob, E_A1, E_A2 on encoder are detected by TM1629B The similarities and differences of signal weld subtracting and increasing for each parameter setting to realize.

Accompanying drawing 9 be the utility model welding machine auxiliary power circuit schematic diagram, U5（UC3842）、T5（Switching Power Supply transformation Device）And its many electronic devices of periphery constitute+24V ,+15V, -15V power circuits, the normal work of the pcb board of correlation is supplied Make.The three-phase 220V external power supplys power supply that the utility model welding machine uses, in order to ensure that external power supply is correct, so auxiliary Help in power circuit increase external input power whether the inspection circuit of phase shortage, the circuit part is mainly by 3 EL817 (optocoupler), 2 2N7002K (metal-oxide-semiconductor), 1 piezo-resistance, 1 5.1V voltage-stabiliser tube, 2 1N4007 diodes, 2 electric capacity and 10 resistance composition, embodiment are that what the cores of J37 tri- inserted shell connection is outside input three-phase 380V power supplys, when not sending out During raw phase shortage phenomenon, two optocoupler conductings of U15 and U16, metal-oxide-semiconductor T6 gate voltages are dragged down, T6 cut-offs, metal-oxide-semiconductor T7 gate pole quilts Plus 15V high level, promote metal-oxide-semiconductor T7 to turn on, optocoupler U10 1 pin current potential is dragged down, optocoupler U10 is not turned on, i.e., U10 3,4 pin are not turned on, and in the event of phase shortage phenomenon, then two optocouplers of U15, U16 can be at least not turned in the presence of a hook Phenomenon so that metal-oxide-semiconductor T6 gate poles are coupled with to 15V high level, promote metal-oxide-semiconductor T6 to turn on, by metal-oxide-semiconductor T7 gate voltages Drag down, T7 cut-offs, optocoupler U10 1 pin is coupled with 15V high level, promotes optocoupler U10 to turn on, i.e., the 3 of U10,4 pin are led It is logical, shell is inserted by the core black of QX two and feeds back both different signals to check whether input power occurs phase shortage phenomenon.Outside Power supply is connect on the basis of three phase mains, to prevent situations such as big ups and downs of artificial wrong voltage and line voltage from occurring Under, electronic component causes to damage phenomenon, the utility model welding machine accessory power supply plate portion in external power supply overtension butt welding machine Divide one detection of increase whether too high via the DC voltage after three-phase commutation bridge, too high, the circuit protected.It is specific real Existing mode is as follows：When VIN inputs are too high, the voltage that R74 divides is enough to puncture voltage-stabiliser tube Z2, triode Q5 B, E both ends shape Into pressure difference, promote Q5 to turn on, UC3842 1 pin signal is dragged down, realizes over-voltage protecting function.

Fig. 8 ~ 10 be the utility model welding machine control panel circuit theory diagrams, control system of the present utility model mainly with Single-chip microcomputer is to realize manual electric arc welding, DC argon arc welding and straight under control of the core by hardware control circuit and software program Flow the corresponding function of pulsed argon arc welding.Some interfaces of single-chip microcomputer are connected to many control circuits.Such as：1）Eight cores are inserted shell J6 and connected Then three core aviation sockets 12 of wired foot-operated aviation plug connection on front panel connect with argon-arc welding gun switch aviation plug Two core aviation sockets 7, can know whether argon-arc welding gun connects by the pin current potential of single-chip microcomputer Scanning Detction single-chip microcomputer 26, detect 27 pin current potentials can know whether wired ride connects, and detection 46 pin current potentials of detection can know whether arc welding gun switch is pressed, when 26th, 27 pin detect represents to have connected during high potential, otherwise represents not connected.The pin of single-chip microcomputer 44,23,24 is used for detecting UP/ The regulation of electric current is given on DOWM welding guns；2）8 cores are inserted to be connected inside shell with single-chip microcomputer, and outside is connected with a wireless module, is Electric welding machine realizes that straighforward operation provides control device；3）OT1, OT2 are connected on the radiator where major power device IGBT, Detection radiator temperature feedback signal is connected to the 5 of single-chip microcomputer, 39 pin.When temperature is not above safety value, OT1, OT2 signal All it is high level, after having a temperature to exceed safety value in both this, the OT signals of feedback will become low level, monolithic After machine examination measures this low level, UC3846 chips will be controlled, are at off state, when temperature drops to setting value Afterwards, welding machine can continue to output electric current, so be achieved that the Thermal protection of welding machine；4）Optocoupler, triode and some electric capacity, Resistance forms high-frequency signal given circuit, and inserting shell by red three cores is connected on high frequency run-on tab, when in argon arc welding welding mould Under formula, after pressing arc welding gun switch, single-chip microcomputer detects that this signal that welding gun is pressed will send the signal for beating high frequency, specifically The pin of single-chip microcomputer 8 output high level is shown as, turns on optocoupler, three cores are inserted into the pin current potential of shell 1 drags down；5）Optocoupler U25, metal-oxide-semiconductor T6, Diode and some resistance, electric capacity composition solenoid valve control circuit, the break-make that shell controls magnetic valve is inserted by blue two cores, when Under argon arc welding bond pattern, determined according to the setting of welding parameters before welding, before welding and front and rear at the end of welding sent The setting of gas time is controlled the break-make of its air valve by single-chip microcomputer again, is embodied in and is changed 6 pin output current potential by single-chip microcomputer, To control optocoupler U25 break-make, and then metal-oxide-semiconductor T6 conducting situation is controlled, when metal-oxide-semiconductor T6 is turned on, magnetic valve normal work, Realize that welding gun is supplied gas function；5）Optocoupler U26, metal-oxide-semiconductor T7, diode and some resistance, capacitance group into draught fan control circuit, this Utility model using single-chip microcomputer control blower fan by the way of, realize the setting of intelligent blower, its realization rate be under no-load condition, High level signal is provided by the pin of single-chip microcomputer 9, is optocoupler U26 conductings, drags down metal-oxide-semiconductor T7 gate electrode drive signals, stall blower fan, The output situation for the different control fan powers of state being presently in by detecting welding machine, realizes energy-efficient intelligent blower Set；6）Optocoupler U27, metal-oxide-semiconductor T8, diode and some resistance, electric capacity composition water tank control circuit, are given by the pin of single-chip microcomputer 28 Go out high level signal, be optocoupler U26 conductings, drag down metal-oxide-semiconductor T8 gate electrode drive signals, water tank is stopped, welded by detecting The output situation for the different control water tank power supplys of state that machine is presently in, above-mentioned function is in preceding control panel of the present utility model And program simultaneously participate in the case of realize.

Setting signal is provided by the pin of single-chip microcomputer 31, and current feedback signal is to sample main transformer primary electrical by Hall sensor The signal of stream, this signal are linked into the A/D thief hatch of single-chip microcomputer, and Voltage Feedback is the isolation that signal is carried out by HCNR200 Sample, and institute's detectable voltage signals are linked into the A/D thief hatch of single-chip microcomputer, give and adjusted with feedback signal via follow-up PI Circuit passes the signal along to UC3846 5 pin in-phase input ends, and the pulsewidth of UC3846 pwm signal or duty are controlled with this Than, and then to control the change of the output voltage of welding machine and electric current, to meet the requirement of the output characteristics under different bond patterns.

Inevitably need to beat high frequency due to welding under argon arc welding high-frequency arc strike mode, if do not handled this when The good interference problem caused by high frequency, it is more likely that display charactron drive signal can be caused abnormal, or even lose sound Should, to avoid the generation of this phenomenon, control panel, will after the setting of given parameters is received before the ad hoc meter of the utility model Data transfer is to MAX3232 chips, and four cores being connected to afterwards by the slotting shell of four cores on control panel insert shell, and this four core inserts shell connection MAX3232 chips on to control panel, the chip pass information to single-chip microcomputer, and single-chip microcomputer is when control display chip is shown Wait and by first passing information to MAX3232, the information transfer between the two MAX3232 chips has stronger resist Interference performance, so after this circuit design is applied, the solution and improvement that can compare are due to argon arc welding high-frequency arc strike band The interference problem come.

All pcb boards of the utility model welding machine all complete the assembly work of surface-mounted device using advanced SMT technologies, make Industry efficiency is improved, and error rate declines.Wherein control panel is special in order to ensure the correctness of control signal raising antijamming capability 4 laminates are not designed as.

The control process of the utility model welding machine manual electric arc welding output characteristics is summarized as follows：

After the three-phase air power switch on welding machine rear board is opened, in a short period of time, the control of welding machine each several part Circuit, which obtains, electric enters working condition.Manual welding is selected by bond pattern button on preceding control panel, by pressing and rotating The mode of encoder sets the parameters of manual welding bond pattern, that is, adjusts hot start size of current, welding current size With Arc size parameter.Welding gun and workpiece are connected with welding terminal, you can into welded condition.By given So that UC3846 exports the PWM waveform of certain dutycycle, welding machine is set to export a stable zero load before welded condition is introduced into Voltage, after welded condition is entered, control circuit by handle receive after the signal that feeds back of Hall current sensor with to Determine signal to be compared, error signal passes through PI（Proportional integration）The adjustment control of circuit, it is input to the drive signal production of welding machine In raw chip UC3846, it is controlled to produce the pwm signal ripple of specific pulsewidth, this signal wave is carried out into power through overdrive circuit puts Control single tube IGBT conducting situation after big, determine the size of welding machine output current.

The control process of the utility model welding machine DC argon arc welding output characteristics is summarized as follows：

After the three-phase air power switch on welding machine rear board is opened, in a short period of time, the control of welding machine each several part Circuit, which obtains, electric enters working condition.Argon arc welding is selected by bond pattern button on preceding control panel, by passing through preceding chain of command Arc welding gun switch mode of operation button selects " two steps on plate（Short weldering）" or " four steps（Long weldering）" mode of operation.Mode of operation will not The difference of welding effect substantially is brought, the mode of operation of " short weldering ", refers to that pressing arc welding gun switch starts to weld, unclamps welding gun Switch terminates welding, the mode of operation of " long weldering ", refers to pressing welding gun for the first time, welding machine is a kind of to be welded than relatively low electric current Connect, after unclamping welding gun, welding enters normal welded condition, and hold mode, to welding gun is pressed for the second time, prepares to receive arc, pine Terminate welding after snapping rifle.Press and rotary encoder by way of set every ginseng of DC argon arc welding bond pattern Count, that is, time, the slow liter of electric current and ramp down time would, striking and receipts arc current, Arc, the pulse frequency of being supplied gas with after of being supplied gas before adjusting Rate and dutycycle, background current and valley point current.Welding gun and workpiece are connected with welding terminal, connect tracheae, is beaten Open gas cylinder to switch and regulate throughput, you can into welded condition.Argon arc welding zero load is in hardware limited pulse width and software limit arteries and veins Under wide collective effect, floating voltage 0, when pressing arc welding gun switch, supplied gas before output, weld zone is protected, simultaneously Close hardware limited pulse width and software limited pulse width so that UC3846 exports the PWM waveform of certain dutycycle, welding machine is being introduced into weldering One stable floating voltage of state output is connect, at the same time single-chip microcomputer exports a high-frequency signal so that high-frequency arc ignition circuit Start working, produce a high-frequency impulse, ignite welding arc, and high-frequency impulse is inhaled after striking terminates by high-frequency absorption plate electric capacity Receive.After welded condition is entered, with giving after the signal that control circuit is fed back by handling reception Hall current sensor Signal is compared, and error signal passes through PI（Proportional integration）The adjustment control of circuit, the drive signal for being input to welding machine produce In chip UC3846, control it to produce the pwm signal ripple of specific pulsewidth, this signal wave is subjected to power amplification through overdrive circuit Single tube IGBT conducting situation is controlled afterwards, determines the size of welding machine output current.The process that furtherly DC argon arc welding is realized, During striking, it is controlled according to the size of the striking electric current of setting, after striking, electric current rises to the welding current of setting.Work as weldering Connect current signal it is constant when, close and after reaching set-point as current detection signal increases, error signal reduces, and passes through PI, which is adjusted, causes UC3846 output pwm pulse drive signal pulsewidth to reduce, and the output voltage of welding machine reduces.Here it is electric current to cut Only degeneration factor, the feedback control only just played a role in the case that current feedback values are close to set-point.When given electricity When flow valuve changes, Current cut-off negative feedback setting value is different, but control process is consistent.So in the small electricity of welding It is formed without several negative characteristic curves, meeting the requirement that DC argon arc welding connects between stream and load current value.

The control process of the utility model welding machine DC pulse argon arc welding output characteristics is summarized as follows：

After the three-phase air power switch on welding machine rear board is opened, in a short period of time, the control of welding machine each several part Circuit, which obtains, electric enters working condition.Argon arc welding is selected by bond pattern button on preceding control panel, by passing through preceding chain of command Arc welding gun switch mode of operation button selects " two steps on plate（Short weldering）" or " four steps（Long weldering）" mode of operation.Mode of operation will not The difference of welding effect substantially is brought, the mode of operation of " short weldering ", refers to that pressing arc welding gun switch starts to weld, unclamps welding gun Switch terminates welding, the mode of operation of " long weldering ", refers to pressing welding gun for the first time, welding machine is a kind of to be welded than relatively low electric current Connect, after unclamping welding gun, welding enters normal welded condition, and hold mode, to welding gun is pressed for the second time, prepares to receive arc, pine Terminate welding after snapping rifle.Press and rotary encoder by way of set every ginseng of DC argon arc welding bond pattern Count, that is, time, the slow liter of electric current and ramp down time would, striking and receipts arc current, Arc, the pulse frequency of being supplied gas with after of being supplied gas before adjusting Rate and dutycycle, background current and valley point current.Welding gun and workpiece are connected with welding terminal, connect tracheae, is beaten Open gas cylinder to switch and regulate throughput, you can into welded condition.Argon arc welding zero load is in hardware limited pulse width and software limit arteries and veins Under wide collective effect, floating voltage 0, when pressing arc welding gun switch, supplied gas before output, weld zone is protected, simultaneously Close hardware limited pulse width and software limited pulse width so that UC3846 exports the PWM waveform of certain dutycycle, welding machine is being introduced into weldering One stable floating voltage of state output is connect, at the same time single-chip microcomputer exports a high-frequency signal so that high-frequency arc ignition circuit Start working, produce a high-frequency impulse, ignite welding arc, and high-frequency impulse is inhaled after striking terminates by high-frequency absorption plate electric capacity Receive.After welded condition is entered, with giving after the signal that control circuit is fed back by handling reception Hall current sensor Signal is compared, and error signal passes through PI（Proportional integration）The adjustment control of circuit, the drive signal for being input to welding machine produce In chip UC3846, control it to produce the pwm signal ripple of specific pulsewidth, this signal wave is subjected to power amplification through overdrive circuit Single tube IGBT conducting situation is controlled afterwards, determines the size of welding machine output current.The output characteristics of welding machine is set to meet DC pulse The requirement of argon arc welding welding.Further illustrate the process that pulse is realized, the substantially control in above-mentioned DC pulse argon arc welding On the basis of, increase peak point current controls with background current in welding process.Specific manifestation of pulse mode when welding To carry out saltus step between set peak point current and background current during welding current, the rule of this saltus step is to pass through butt welding Connect what pulse frequency and pulse width in parameter determined, at the end of welding according to welding parameter receive arc current, ramp down time would and The time is supplied gas afterwards to realize the process of welding.

Above is control process explanation when each PCB part of the utility model welding machine works.The utility model Give structural representation and schematic diagram design and the mode of connection of the 1 ~ accompanying drawing of accompanying drawing 12 on the utility model welding machine The output characteristics control of the manual electric arc welding of welding machine, DC argon arc welding and DC pulse argon arc welding is not only realized, it is designed Control circuit and its connected mode are tested for a long time by market, the design of the cooling air channel of welding machine, for argon arc Influence design anti-jamming circuit during weldering during high-frequency arc strike to numeral method, pcb board is using ripe SMT technologies processing life Production, all it is to make the utility model welding machine product that there is the basic reason place of the advantage such as premium properties, rational in infrastructure, and meets The important leverage that product is efficient, reliably produces.The content of the utility model patent application protection is that this welding machine of protection Structure and circuit design.

Claims (9)

1. a kind of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine, including cabinet, mainboard, control panel, it is characterised in that： Cabinet is by bottom plate（35）, front panel（11）, rear board（34）And case（26）Composition, case（26）Top be provided with handle（1）, Rear board（34）The latter half is embedded with blower fan（33）, blower fan（33）Front be provided with blower fan guard（32）, rear board（34）On Half part is provided with water supply connector（31）, inlet suction port（30）, fixed mount（28）, electric source connecting box（27）, fixed mount（28）It is interior solid Determine having air switch（29）, bottom plate（35）The base angle of lower section four is respectively fixed with under-chassis（36）, bottom plate（35）Top is provided with mainboard （23）, mainboard（23）Side be provided with transformer（37）, inductance（15）, transformer（37）With inductance（15）Between be provided with high frequency inhale Receive plate（16）, inductance（15）Opposite side be provided with pressure switch fixed mount（14）, inductance（15）Top be provided with three-way connection （17）, three-way connection（17）Top be connected with high-frequency inductor（18）, high-frequency inductor（18）Side be provided with current sensor （19）, high-frequency inductor（18）Opposite side be provided with connecting copper bar（13）, mainboard（23）, current sensor（19）, high-frequency inductor （18）, connecting copper bar（13）Top be equipped with median septum（25）, median septum（25）Top be provided with protective ring（20）, three-phase it is whole Flow bridge（24）, high frequency run-on tab（22）, three phase mains（21）, control panel（2）And magnetic valve（3）, median septum（25）Front set There is control panel（4）, front panel（11）On be embedded with three core aviation sockets（12）, water route out splice going splice（10）, both positive and negative polarity output Joint（9）, preceding defeated air outlet adapter（8）, two core aviation sockets（7）, keyswitch（5）, knob（6）, three core aviation sockets（12）、 Water route out splice going splice（10）, both positive and negative polarity out splice going splice（9）, preceding defeated air outlet adapter（8）, two core aviation sockets（7）, keyswitch （5）, knob（6）Run through front panel（11）With control panel（4）It is connected.

A kind of 2. monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 1, it is characterised in that：Institute State mainboard（23）Recover to export cowling panel by fast（23-1）, single tube IGBT module（23-9）, radiator, fast recovery diode（23- 6）, IGBT inversion plates（23-5）, supporting plate（23-4）Composition, supporting plate（23-4）Side be provided with fast recovery diode（23- 6）, fast recovery diode（23-6）It is sticked in radiator one（23-2）Top, radiator one（23-2）Side and supporting plate （23-4）It is connected, radiator one（23-2）Opposite side recover to export cowling panel with fast（23-1）It is connected, supporting plate（23-4）'s Opposite side and radiator two（23-3）Side be connected, radiator two（23-3）It is provided with single tube IGBT module（23-9）, temperature-sensitive Resistance（23-7）, collets（23-8）, radiator two（23-3）Opposite side and IGBT inversion plates（23-5）It is connected.

3. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine, including governor circuit, IGBT inverter circuits, IGBT drive controls circuit, rectifying output circuit, high frequency striking current, control panel circuit and auxiliary power circuit, its feature exist In：The governor circuit is as follows：380V power supplys are connected with three-phase air switch K side, three-phase air switch K opposite side point For two-way, respectively with three phase mains（21）Side, three-phase commutation bridge（24）It is connected, three phase mains（21）Opposite side and control Plate（2）Side be connected, three-phase commutation bridge（24）With filter circuit（A）, IGBT inverter circuits（B）Mutually and even, IGBT inversions Circuit（B）With driving plate（38）Side be connected, driving plate（38）Opposite side and control panel（2）Side be connected, control panel （2）Also with rectifying output circuit（D）, hf arc starting circuit（C）, auxiliary power circuit（E）It is connected.

4. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：The IGBT inverter circuits（B）It is as follows：No. 1 port of PWR1 ports is divided into Shi Yilu, respectively with IGBT pipes T16 collection Electric end, IGBT pipes T11 current collection end, IGBT pipes T13 current collection end, IGBT pipes T12 current collection end, electric capacity C56 one end, electric capacity C9 one end, resistance R93 one end, electric capacity C15 one end, thermistor RT4 one end, relay J25 No. 4 port phases Even, the thermistor RT4 other end is divided into two-way, is connected respectively with relay J25 No. 3 ports, DC+IN1 ports, electric capacity The C15 other end is divided into nine tunnels, respectively one end with electric capacity C3, the resistance R93 other end, resistance R95 one end, electric capacity C16 The other end, electric capacity C13 one end, the electric capacity C9 other end, electric capacity C12 one end, the electric capacity C56 other end, electric capacity C57 One end is connected, and IGBT pipes T12 transmitting terminal is divided into four tunnels, respectively the current collection end with IGBT pipes T10, IGBT pipes T13 transmitting terminal, IGBT pipes T14 current collection end, OUTA1 ports is connected, and IGBT pipes T11 transmitting terminal is divided into four tunnels, respectively with IGBT pipes T15 collection Electric end, IGBT pipes T16 transmitting terminal, IGBT pipes T17 current collection end, transformer T18 No. 1 port are connected, and the 2 of transformer T18 Number port is connected with OUTB1 ports, and transformer T18 No. 3 ports are connected with CT-B ports, transformer T18 No. 4 ports with CT-A ports are connected, and PWR1 No. 2 ports are divided into ten tunnels, respectively the transmitting terminal with IGBT pipes T17, IGBT pipes T15 transmitting terminal, IGBT pipes T14 transmitting terminal, IGBT pipes T10 transmitting terminal, the electric capacity C57 other end, the electric capacity C12 other end, electric capacity C13 The other end, the resistance R95 other end, the electric capacity C3 other end, DC-IN1 ports are connected, IGBT pipes T17 base stage and G4B ports It is connected, IGBT pipes T16 base stage is connected with G2B ports, and IGBT pipes T15 base stage is connected with G4A ports, IGBT pipes T14 base Pole is connected with G3B ports, and IGBT pipes T13 base stage is connected with G1B ports, and IGBT pipes T12 base stage is connected with G1A ports, IGBT pipes T11 base stage is connected with G2A ports, and IGBT pipes T10 base stage is connected with G3A ports, No. 1 of the relay J25 Port is divided into three tunnels, and one end with diode D7, diode D9 one end, triode Q19 colelctor electrode are connected respectively, diode The D9 other end is connected with voltage-regulator diode ZD3 one end, and triode Q19 base stage is connected with voltage-regulator diode ZD4 one end, The voltage-regulator diode ZD4 other end is divided into two-way, and the other end with voltage-regulator diode ZD3, resistance R4 one end are connected respectively, and three Pole pipe Q19 emitter stage is connected with electric capacity C14 one end, and the electric capacity C14 other end is divided into two-way, another with resistance R4 respectively End, resistance R3 one end are connected, and the resistance R3 other end is divided into two-way, respectively one end with diode D7, the 2 of relay J25 Number port is connected.

5. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：The IGBT drive controls circuit is as follows：DRV1 No. 1 port is connected with VCC ports, DRV1 No. 2 ports ground connection, DRV1 No. 3 ports are connected with-VCC ports, and DRV1 No. 4 ports are divided into four tunnels for PWM-A ports, respectively with electric capacity C58's One end, resistance R100 one end, electric capacity C46 one end, resistance R78 one end are connected, and the resistance R78 other end is divided into two-way, The other end with electric capacity C46, voltage-regulator diode Z45 one end are connected respectively, voltage-regulator diode the Z45 other end and triode Q15 base stage is connected, and triode Q15 transmitting terminal is divided into two-way, and the transmitting terminal with VCC ports, triode Q16 is connected respectively, Triode Q15 colelctor electrode is connected with resistance R77 one end, and the resistance R77 other end is divided into two-way, respectively with triode Q17 Colelctor electrode, transformer TR2 No. 1 port be connected, triode Q17 transmitting terminal ground connection, triode Q17 base stage and voltage stabilizing two Pole pipe Z46 one end is connected, and the voltage-regulator diode Z46 other end is divided into two-way, respectively the other end with resistance R100, electric capacity The C58 other end is connected, DRV1 No. 5 ports are divided into 4 tunnels for PWM-B ports, respectively one end with resistance R79, electric capacity C51 One end, resistance R75 one end, electric capacity C52 one end are connected, and the resistance R79 other end is divided into two-way, respectively with electric capacity C51's The other end, voltage-regulator diode Z35 one end are connected, and the voltage-regulator diode Z35 other end is connected with triode Q16 base stage, and three Pole pipe Q16 colelctor electrode is connected with resistance R76 one end, and the resistance R76 other end is divided into two-way, respectively with triode Q18's Colelctor electrode, transformer TR2 No. 2 ports are connected, triode Q18 grounded emitter, triode Q18 base stage and the pole of voltage stabilizing two Pipe Z36 one end is connected, the voltage-regulator diode Z36 other end is divided into two-way, respectively the other end with resistance R75, electric capacity C52 The other end is connected, and transformer TR2 No. 3 ports are divided into five tunnels, respectively the colelctor electrode with triode Q9, resistance R90 one end, steady Pressure diode Z49 one end, resistance R56 one end, voltage-regulator diode Z38 one end is connected, the voltage-regulator diode Z38 other end It is divided into two-way, the other end with resistance R56, voltage-regulator diode Z37 one end are connected respectively, the voltage-regulator diode Z37 other end It is connected with resistance R55 one end, the resistance R55 other end is divided into three tunnels, respectively one end with resistance R80, the one of electric capacity C25 End, voltage-regulator diode Z47 one end are connected, and the resistance R80 other end is connected with voltage-regulator diode Z48 one end, the pole of voltage stabilizing two The pipe Z48 other end is divided into two-way, and the other end with resistance R90, the voltage-regulator diode Z49 other end are connected respectively, voltage stabilizing two The pole pipe Z47 other end is divided into three tunnels, respectively the other end with electric capacity C25, triode Q9 emitter stage, the one of diode D11 End is connected, and triode Q9 base stage is divided into two-way, and one end with diode D16, resistance R88 one end are connected respectively, diode The D11 other end is divided into three tunnels, respectively the other end with diode D16, the resistance R88 other end, transformer TR2 No. 4 ends Mouth is connected, and transformer TR2 No. 5 ports are divided into three tunnels, respectively one end with diode D19, diode D20 one end, resistance R98 one end is connected, and the diode D20 other end is divided into two-way, respectively the other end with resistance R98, triode Q21 base stage It is connected, the diode D19 other end is divided into three tunnels, respectively the emitter stage with triode Q21, electric capacity C27 one end, the pole of voltage stabilizing two Pipe Z53 one end is connected, the voltage-regulator diode Z53 other end is divided into three tunnels, respectively the other end with electric capacity C27, resistance R99 One end, resistance R63 one end are connected, and the resistance R99 other end is connected with voltage-regulator diode Z54 one end, voltage-regulator diode Z54 The other end be divided into two-way, one end with resistance R101 one end, voltage-regulator diode Z55 is connected respectively, the resistance R63 other end with Voltage-regulator diode Z41 one end is connected, and the voltage-regulator diode Z41 other end is divided into two-way, respectively one end with resistance R64, steady Pressure diode Z42 one end is connected, and the voltage-regulator diode Z42 other end is divided into five tunnels, respectively the other end with resistance R64, steady The pressure diode Z55 other end, the resistance R101 other end, triode Q21 colelctor electrode, transformer TR2 No. 6 port phases Even, transformer TR2 No. 7 ports are divided into five tunnels, respectively the colelctor electrode with triode Q20, resistance R97 one end, the pole of voltage stabilizing two Pipe Z52 one end, resistance R60 one end, voltage-regulator diode Z40 one end are connected, and the voltage-regulator diode Z40 other end is divided into two Road, respectively the other end with resistance R60, voltage-regulator diode Z39 one end be connected, voltage-regulator diode the Z39 other end and resistance R59 one end is connected, and the resistance R59 other end is divided into three tunnels, respectively one end with resistance R96, electric capacity C26 one end, voltage stabilizing Diode Z50 one end is connected, and the resistance R96 other end is connected with voltage-regulator diode Z51 one end, voltage-regulator diode Z51's The other end is divided into two-way, and the other end with resistance R97, the voltage-regulator diode Z52 other end are connected respectively, voltage-regulator diode Z50 The other end be divided into three tunnels, the other end with electric capacity C26, triode Q20 emitter stage, diode D17 one end are connected respectively, Triode Q20 base stage is divided into two-way, and one end with diode D18, resistance R91 one end are connected respectively, and diode D17's is another One end is divided into three tunnels, and the other end with diode D18, the resistance R91 other end, transformer TR2 No. 8 ports are connected respectively, Transformer TR2 No. 9 ports are divided into three tunnels, respectively one end with diode D14, diode D15 one end, the one of resistance R50 End is connected, and the diode D15 other end is divided into two-way, and the other end with resistance R50, triode Q8 base stage are connected respectively, and two The pole pipe D14 other end is divided into three tunnels, respectively the emitter stage with triode Q8, electric capacity C24 one end, voltage-regulator diode Z32 One end is connected, and the voltage-regulator diode Z32 other end is divided into three tunnels, respectively the other end with electric capacity C24, resistance R51 one end, electricity Resistance R65 one end is connected, and the resistance R51 other end is connected with voltage-regulator diode Z33 one end, and voltage-regulator diode Z33's is another End is divided into two-way, and one end with resistance R52 one end, voltage-regulator diode Z34 is connected respectively, resistance the R65 other end and voltage stabilizing two Pole pipe Z43 one end is connected, and the voltage-regulator diode Z43 other end is divided into two-way, respectively one end with resistance R87, the pole of voltage stabilizing two Pipe Z44 one end is connected, and the voltage-regulator diode Z44 other end is divided into five tunnels, respectively the other end with resistance R87, the pole of voltage stabilizing two The pipe Z34 other end, the resistance R52 other end, triode Q8 colelctor electrode, transformer TR2 No. 10 ports are connected.

6. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：Described rectifying output circuit is as follows：Transformer T1 No. 3 ports are divided into five tunnels, respectively one end with resistance R1, two poles Pipe D4 one end, diode D4 ' one end, diode D3 one end, diode D3 ' one end are connected, the resistance R1 other end It is connected with resistance R2 one end, the resistance R2 other end is connected with electric capacity C14 one end, and the electric capacity C14 other end is divided into 16 Road, respectively the other end with diode D4, the diode D4 ' other end, the diode D3 other end, diode D3 ' it is another End, electric capacity C15 one end, diode D2 one end, diode D2 ' one end, OUT1 ports, diode D1 one end, two poles Pipe D1 ' one end, diode D8 one end, diode D8 ' one end, diode D7 one end, diode D7 ' one end, OUT2 ports, diode D6 one end, diode D6 ' one end, diode D5 one end, diode D5 ' one end, electric capacity C17 one end, electric capacity C13 one end is connected, and the electric capacity C13 other end is connected with J2, and the electric capacity C17 other end is with resistance R8's One end is connected, and the resistance R8 other end is connected with resistance R7 one end, and the resistance R7 other end is divided into five tunnels, respectively with diode The D6 other end, the diode D6 ' other end, the diode D5 other end, the diode D5 ' other end, No. 8 of transformer T1 Port is connected, and transformer T1 No. 5 ports are divided into five tunnels, respectively the other end with diode D7, diode D7 ' the other end, The diode D8 other end, the diode D8 ' other end, resistance R5 one end are connected, and the resistance R5 other end is with resistance R6's One end is connected, and the resistance R6 other end is connected with the electric capacity C16 other end, and transformer T1 No. 6 ports are divided into five tunnels, respectively with The diode D2 other end, the diode D2 ' other end, the diode D1 other end, the diode D1 ' other end, resistance R3 One end, the resistance R3 other end be connected with resistance R4 one end, the resistance R4 other end with electric capacity C15 one end, electric capacity C13 The other end with support chip J2 be connected.

7. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：The hf arc starting circuit is as follows：Chip U2 VREF ports are divided into two-way, respectively one end with resistance R11, resistance R4 One end be connected, the resistance R11 other end is divided into two-way, respectively the VFB ports with chip U2, support chip J5 No. 1 port It is connected, support chip J5 No. 2 ports ground connection, support chip J5 No. 3 ports are connected with electric capacity C14 one end, electric capacity C14's The other end is grounded, and chip U2 VCC ports are connected with chip U4 VOUT ports, chip U4 GND ports ground connection, chip U4's VIN ports are connected with 28V power supplys, and chip U2 GND ports ground connection, chip U2 OUT terminal mouth is connected with resistance R2 one end, electricity The resistance R2 other end is divided into two-way, and one end with resistance R17, FET T3 gate pole are connected respectively, the resistance R17 other end Ground connection, FET T3 drain electrode are connected with transformer T4 No. 1 port, transformer T4 No. 2 ports and 28V power supply phases Even, transformer T4 No. 3 ports are divided into two-way, and No. 2 ports with G2 ports, electric capacity C15 one end are connected respectively, electric capacity C15 The other end with supporting chip J7 No. 1 port to be connected, support chip J7 No. 2 ports are divided into two-way, respectively with the 1 of G2 ports Number port, transformer T4 HV ports are connected, and FET T3 source electrode is divided into two-way, respectively one end with resistance R18, resistance R16 one end is connected, and resistance R18 other end ground connection, the resistance R16 other end is connected with chip U2 ISENSE ports, electricity The resistance R4 other end is connected with chip U2 RT/CT ports.

8. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：The control panel circuit is as follows：Peripheral interface J28 No. 1 port is R_LINK ports, is divided into two-way, respectively with electric capacity C135 one end, resistance R154 one end is connected, and No. 2 ports of the peripheral interface J28 are P_LINK ports, are divided into two-way, One end with electric capacity C136, resistance R156 one end are connected respectively, and No. 3 ports of the peripheral interface J28 are KEY1 ports, with Electric capacity C137 one end is connected, and peripheral interface J28 No. 4 ports are 24VP ports, are divided into two-way, respectively with the one of resistance R155 End, electric capacity C139 one end are connected, and peripheral interface J28 No. 5 ports are GND_SIGNAL ports, one end phase with electric capacity C138 Even, peripheral interface J28 No. 6 ports are Remote_POT ports, are connected with electric capacity C140 one end, No. 7 of peripheral interface J28 Port is UP ports, is connected with electric capacity C141 one end, and peripheral interface J28 No. 8 ports are DOWN ports, with electric capacity C142's One end is connected, and the other end of the electric capacity C135 ~ C142 is harness-integrated to be connected with J27 ports, the institute resistance R155 other end point For three tunnels, the other end with 24V power supplys, the resistance R156 other end, resistance R154 is connected respectively, the KEY1 ports and photoelectricity Coupler U14 No. 2 ports are connected, and photoelectrical coupler U14 No. 1 port is connected with resistance R49 one end, and resistance R49's is another One end is connected with 24V power supplys, and photoelectrical coupler U14 No. 4 ports are connected with 5V power supplys, photoelectrical coupler U14 No. 3 ports point For two-way, one end with arc welding gun switch port, resistance R45 is connected respectively, resistance R45 other end ground connection；The R_LINK ends Mouth is connected with photoelectrical coupler U20 No. 2 ports, and photoelectrical coupler U20 No. 1 port is connected with resistance R79 one end, resistance The R79 other end is connected with 24V power supplys, and photoelectrical coupler U20 No. 4 ports are connected with 5V power supplys, and the 3 of photoelectrical coupler U20 Number port is divided into two-way, and one end with R_LINK_F ports, resistance R78 is connected respectively, resistance R78 other end ground connection；It is described P_LINK ports are connected with photoelectrical coupler U21 No. 2 ports, photoelectrical coupler U21 No. 1 port and resistance R81 one end It is connected, the resistance R81 other end is connected with 24V power supplys, and photoelectrical coupler U21 No. 4 ports are connected with 5V power supplys, photoelectric coupling Device U21 No. 3 ports are divided into two-way, and one end with P_LINK_F ports, resistance R80 is connected respectively, resistance R80 another termination Ground；The UP ports are connected with photoelectrical coupler U23 No. 2 ports, and photoelectrical coupler U23 No. 1 port is with resistance R104's One end is connected, and the resistance R104 other end is connected with 24V power supplys, and photoelectrical coupler U23 No. 4 ports are connected with 5V power supplys, light Electric coupler U20 No. 3 ports are divided into two-way, and one end with GUN_UP ports, resistance R103 is connected respectively, and resistance R103's is another One end is grounded；The DOWN ports are connected with photoelectrical coupler U22 No. 2 ports, photoelectrical coupler U22 No. 1 port and electricity Resistance R84 one end is connected, and the resistance R84 other end is connected with 24V power supplys, photoelectrical coupler U22 No. 4 ports and 5V power supply phases Even, photoelectrical coupler U22 No. 3 ports are divided into two-way, and one end with GUN_DOWN ports, resistance R83 is connected respectively, resistance R83 other end ground connection；The 24V power supplys are also connected with photoelectrical coupler U45 No. 4 ports, No. 3 of photoelectrical coupler U45 Port is connected with resistance R160 one end, and the resistance R160 other end is divided into two-way, respectively one end with resistance R159, triode Q17 base stage is connected, and the resistance R159 other end is connected with signal ground, and triode Q17 emitter stage is connected with signal ground, three poles Pipe Q17 colelctor electrode is connected with HF2 No. 1 port, and HF2 No. 2 ports are connected with signal ground, photoelectrical coupler U45 No. 2 ends Mouth ground connection, photoelectrical coupler U45 No. 1 port are connected with resistance R171 one end, resistance the R171 other end and HF ports phase Even；The 24V power supplys be divided into one end respectively with resistance R175 of three tunnels, diode D43 one end, No. 1 of air-path interface GAS2 Port is connected, and the resistance R175 other end is divided into three tunnels, respectively one end with resistance R177, photoelectrical coupler U47 No. 4 ends Mouthful, FET T14 gate pole be connected, FET T14 drain electrode is divided into two-way, respectively the other end with diode D43, Air-path interface GAS2 No. 2 ports are connected, and the resistance R177 other end is divided into three tunnels, respectively the source electrode with FET T14, letter Number ground, photoelectrical coupler U47 No. 3 ports are connected, photoelectrical coupler U47 No. 2 ports ground connection, No. 1 of photoelectrical coupler U47 Port is connected with resistance R176 one end, and the resistance R176 other end is connected with gas trap；The 24V power supplys are divided into three tunnels difference One end of one end, diode D42 with resistance R172, ZNFJ2 No. 1 port are connected, and the resistance R172 other end is divided into three tunnels, One end with resistance R174, photoelectrical coupler U46 No. 4 ports, FET T15 gate pole are connected respectively, FET T15 Drain electrode be divided into two-way, the other end with diode D42, ZNFJ2 No. 2 ports are connected respectively, the resistance R174 other end It is divided into three tunnels, the source electrode with FET T15, signal ground, photoelectrical coupler U46 No. 3 ports are connected respectively, photoelectrical coupler U46 No. 2 ports ground connection, photoelectrical coupler U46 No. 1 port are connected with resistance R173 one end, the resistance R173 other end It is connected with ZNFJ ports；The 24V power supplys are divided into one end, diode D44 one end, water route of three tunnels respectively with resistance R178 and connect Mouth Water2 No. 1 port is connected, and the resistance R178 other end is divided into three tunnels, respectively one end with resistance R180, photoelectric coupling Device U48 No. 4 ports, FET T16 gate pole are connected, and FET T16 drain electrode is divided into two-way, respectively with diode The D44 other end, water route interface Water2 No. 3 ports are connected, and the resistance R178 other end is divided into three tunnels, respectively with field-effect Pipe T16 source electrode, signal ground, photoelectrical coupler U48 No. 3 ports are connected, photoelectrical coupler U48 No. 2 ports ground connection, photoelectricity Coupler U48 No. 1 port is connected with resistance R179 one end, and the resistance R179 other end is connected with water route relay；It is described 5V power supplys are connected with control chip U4 VIN ports, control chip U4 GND ports ground connection, control chip U4 VOUT ports It is connected with resistance R183 one end, the resistance R183 other end is connected with one end of LED 5, light emitting diode LED5 other end ground connection；The one end of the 5V power supplys also with resistance R181 is connected, and the resistance R181 other end is divided into two-way, point No. 1 port of one end, JS2 ports not with electric capacity C30 is connected, and the electric capacity C30 other end is divided into two-way, respectively with ground, JS2 No. 2 ports be connected；Control chip U8 VIN ports are connected with VCC ports, and control chip U8 GND ports are divided into three tunnels, point One end not with ground, electric capacity C158 one end, LED 6 is connected, the other end and resistance of LED 6 R184 one end is connected, and the resistance R184 other end is divided into two-way, respectively the other end with electric capacity C158, chip U8 VOUT ends Mouth is connected；Control board chip U9 SHDN ports are divided into four tunnels, respectively one end with resistance R4, resistance R22 one end, electric capacity C6 One end, diode D22 one end be connected, the electric capacity C6 other end is divided into two-way, respectively the other end with resistance R22, ground It is connected, the diode D22 other end is connected with resistance R208, and the resistance R4 other end is divided into five tunnels, respectively with the one of resistance R27 End, resistance R7 one end, diode D5 one end, diode D6 one end, resistance R26 one end are connected, and diode D5's is another One end is divided into two-way, and one end with diode D7, No. 1 port of HGQ1 ports are connected respectively, and the diode D6 other end is divided into Two-way, respectively one end with diode D8, No. 2 ports of HGQ1 ports be connected, the resistance R7 other end is divided into three tunnels, respectively with The diode D7 other end, the diode D8 other end, ground are connected, and the resistance R27 other end is connected with VCC ports, resistance The R26 other end is connected with CT ports, and control chip U9 COMP ports are connected with ERA- ports, control chip U9 ERA+ ends Mouth is connected with resistance R199 one end, and the resistance R199 other end is divided into four tunnels, respectively one end with resistance R205, resistance R196 One end, diode D18 one end, resistance R190 one end be connected, the resistance R205 other end and triode Q6 colelctor electrode It is connected, triode Q6 grounded emitter, triode Q6 base stage is connected with resistance R211, resistance R196 other end ground connection, Diode D18's is grounded anotherly, and the resistance R190 other end is divided into three tunnels, respectively one end with electric capacity C39, voltage-regulator diode VD2 one end, amplifier U51A No. 1 port are connected, and the electric capacity C39 other end is connected with resistance R30 one end, resistance R30 The other end be divided into seven tunnels, one end with voltage-regulator diode VD2, amplifier U51A No. 2 ports, the one of diode D21 respectively End, diode D20 one end, resistance R197 one end, resistance R200 one end, resistance R186 one end are connected, diode D20 The other end be divided into three tunnels, No. 3 ports with ground, the diode D21 other end, amplifier U51A are connected respectively, resistance The R197 other end is connected with HALL ports, and the resistance R186 other end is connected with resistance R185 one end, and resistance R185's is another One end is connected with diode D32 one end, and the diode D32 other end is divided into three tunnels, respectively the other end with resistance R200, put Big device U53B No. 7 ports, resistance R191 one end is connected, and the resistance R191 other end is divided into three tunnels, respectively with resistance R213 One end, resistance R28 one end, amplifier U53B No. 6 ports be connected, the resistance R213 other end is with swept resistance VR6's Sliding end is connected, and swept resistance VR6 one end is connected with VCC ports, and the swept resistance VR6 other end is connected with-VCC ports, Amplifier U53B No. 5 ports ground connection, the resistance R28 other end are connected with swept resistance VR7 sliding end, swept resistance VR7 One end be divided into two-way, No. 14 ports with amplifier U50D, amplifier U50D No. 13 ports are connected respectively, swept resistance VR7 other end ground connection, amplifier U50D No. 12 ports are connected with TO10 ports, and the HALL ports are also with resistance R51's One end is connected, and the resistance R51 other end is divided into three tunnels, and one end with resistance R130, resistance R131, resistance R136 are connected respectively, Resistance R130 other end ground connection；Control chip U9 GND ports ground connection, control chip U9 VC ports and resistance R2 one end It is connected, the resistance R2 other end is connected with VCC ports, and control chip U9 VIN ports are connected with VCC ports, control chip U9 CS/SS ports be connected with SS ports, control chip U9 AOUT ends are connected with No. 4 port PWM-A of Driver1 chips, control Coremaking piece U9 BOUT ends are connected with No. 5 port PWM-B of Driver1 chips, control chip U9 CT ports and triode Q3 Base stage be connected, triode Q3 colelctor electrode is connected with VREF ports, and triode Q3 emitter stage is divided into three tunnels, respectively with electric capacity C126 one end, resistance R31 one end, electric capacity C125 one end are connected, the electric capacity C125 other end and resistance R193 one end It is connected, the resistance R193 other end is divided into five tunnels, respectively the other end with resistance R31, resistance R24 one end, electric capacity C125 The other end, resistance R14 one end, control chip U9 CS+ ports are connected, and the resistance R24 other end is connected with CT ports, resistance R14 other end ground connection, control chip U9 CS- ports are divided into three tunnels, respectively with resistance R192 one end, ground, field-effect Pipe T18 source electrode is connected, and FET T18 gate pole is divided into two-way, respectively one end with resistance R209, the one of diode D45 End is connected, and resistance R209 other end ground connection, the diode D45 other end is connected with BP ports, FET T18 drain electrode It is connected with resistance R215 one end, the resistance R215 other end is divided into two-way, respectively the other end with resistance R192, control chip U9 RT ports are connected, and No. 1 port of the Driver1 chips is connected with VCC ports, No. 2 ports of Driver1 chips for- VCC ports, the BP ports are connected with amplifier U36C No. 8 ports, and amplifier U36C No. 9 ports are divided into three tunnels, respectively One end of one end, diode D26 with diode D25, J11 No. 3 ports are connected, and the diode D25 other end is divided into two-way, No. 1 port with VCC ports, J11 is connected respectively, the diode D26 other end is divided into two-way, respectively with-VCC ports, J11 No. 2 ports are connected, and amplifier U36C No. 10 ports are divided into two-way, respectively one end with resistance R135, resistance R134 one end It is connected, resistance R135 other end ground connection, the resistance R134 other end is connected with VCC ports, No. 4 ports ground connection of J11 ports； Control chip U38 No. 1 port is connected with signal ground, and control chip U38 No. 2 ports are connected with resistance R140 one end, electricity The resistance R140 other end is connected with amplifier U37B No. 7 ports, and amplifier U37B No. 5 ports are connected with peripheral port POT, Amplifier U37B No. 6 ports are divided into two-way, and No. 4 ports with control chip U38, resistance R141 one end are connected respectively, electricity Resistance R141 the other end be connected with signal ground, control chip U38 No. 5 ports are divided into two-way, respectively one end with resistance R144, Amplifier U39B No. 5 ports are connected, and resistance R144 other end ground connection, amplifier U39B No. 6 ports are divided into two-way, respectively No. 7 ports of one end, amplifier U39B with resistance R145 are connected, and the resistance R145 other end is divided into two-way, respectively with resistance R146 one end, voltage-regulator diode Z4 one end is connected, resistance R146 other end ground connection, voltage-regulator diode Z4 another termination Ground, control chip U38 No. 6 ports are connected with VCC ports；Control chip U43 No. 1 port is connected with signal ground, controls core Piece U43 No. 2 ports are connected with resistance R148 one end, and the resistance R148 other end is connected with amplifier U40A No. 1 port, Amplifier U40A No. 2 ports are divided into two-way, and one end with resistance R149, control chip U43 No. 4 ports are connected respectively, electricity The resistance R149 other end is connected with signal ground, and amplifier U40A No. 3 ports are connected with swept resistance VR5 sliding end, slides Resistance VR5 one end is connected with resistance R150 one end, and the swept resistance VR5 other end is connected with signal ground, resistance R150's The other end is divided into two-way, and No. 1 port with VFB1 ports, resistance R167 one end are connected respectively, No. 2 ports of VFB1 ports with Signal ground is connected, and the resistance R167 other end is divided into two-way, respectively one end with resistance R168, voltage-regulator diode Z48 one end Be connected, the resistance R168 other end is connected with signal ground, the voltage-regulator diode Z48 other end be divided into two-way respectively with resistance R169 One end, photoelectrical coupler U41A No. 1 port be connected, the resistance R169 other end is divided into two-way, respectively with signal ground, photoelectricity Coupler U41A No. 2 ports are connected, photoelectrical coupler U41A No. 3 ports ground connection, photoelectrical coupler U41A No. 4 ports with FET T13 source electrode is connected, and FET T13 drain electrode is connected with SS ports, FET T13 gate pole and resistance R170 connects；No. 1 port of the control panel GND1 ports is connected with 5V power supplys, No. 2 ports and the electricity of control panel GND1 ports Resistance R54 one end is connected, and the resistance R54 other end is connected with 5V power supplys, No. 3 ports ground connection of control panel GND1 ports；Control No. 1 port of plate OT4 ports is divided into three tunnels, respectively one end with resistance R137, voltage-regulator diode Z46 one end, electric capacity C122 One end be connected, the resistance R137 other end is connected with 5V power supplys, and the electric capacity C122 other end is divided into three tunnels, respectively with voltage stabilizing two The pole pipe Z46 other end, ground, No. 2 ports of control panel OT4 ports are connected；No. 1 port of control panel OT3 ports is divided into three Road, respectively one end with resistance R138, voltage-regulator diode Z47 one end, electric capacity C121 one end be connected, resistance R138's is another End is connected with 5V power supplys, and the electric capacity C121 other end is divided into three tunnels, respectively the other end with voltage-regulator diode Z47, ground, control No. 2 ports of plate OT3 ports are connected.

9. a kind of circuit of monolithic processor controlled IGBT single tubes Multifunctional argon arc welding machine according to claim 3, its feature It is：The auxiliary power circuit is as follows：Chip U5 VFB ports are divided into five tunnels, are held respectively with No. 3 of photoelectrical coupler U14B Mouth, electric capacity C22 one end, electric capacity C23 one end, resistance R17 one end, resistance R13 one end are connected, and resistance R17's is another End be divided into two-way, the other end with signal ground, electric capacity C23 is connected respectively, and the resistance R13 other end is divided into two-way, respectively with electricity The appearance C22 other end, chip U5 COMP ports are connected, and chip U5 RT/CT ports are divided into two-way, respectively with resistance R21's One end, electric capacity C26 one end are connected, and the electric capacity C26 other end is connected with signal ground, and the resistance R21 other end is divided into two-way, point The VREF ports of one end, chip U5 not with electric capacity C52 are connected, and the electric capacity C52 other end is connected with signal ground, chip U5's ISNS ports are divided into two-way, and one end with electric capacity C29, resistance R22 one end are connected respectively, electric capacity the C29 other end and signal Ground is connected, and the resistance R22 other end is connected with CFB ports, and chip U5 VCC ports are divided into two-way, respectively with V port, electric capacity C24 one end is connected, and the electric capacity C24 other end is connected with signal ground, and chip U5 GND ports are connected with signal ground, chip U5 OUT terminal mouth be connected with PWM port, PWM port is connected with resistance R23 one end, the resistance R23 other end and FET T6 Gate pole be connected, FET T6 source electrode is divided into three tunnels, respectively one end with resistance R29, resistance R30 one end, CFB ports It is connected, the resistance R30 other end is divided into two-way, and the other end with resistance R29, signal ground are connected respectively, FET T6 leakage Electrode is divided into two-way, and one end with diode D30, transformer T5 No. 8 ports are connected respectively, the diode D30 other end point For three tunnels, one end with resistance R26, resistance R20 one end, electric capacity C25 one end are connected respectively, the resistance R26 other end point For four tunnels, the other end with resistance R20, the electric capacity C25 other end, VIN ports, transformer T5 No. 10 ports are connected respectively, Transformer T5 No. 12 ports are connected with diode D6 one end, and the diode D6 other end is divided into two-way, respectively with electric capacity C51 One end, resistance R25 one end be connected, the resistance R25 other end is connected with V port, electric capacity the C51 other end and signal ground phase Even, transformer T5 No. 14 ports are divided into two-way, and one end with signal ground, electric capacity C55 is connected respectively, the electric capacity C55 other end Ground connection, transformer T5 No. 7 ports are connected with diode D4 one end, and the diode D4 other end is divided into three tunnels, respectively with electricity Appearance C45 one end, resistance R67 one end, No. 1 port of FAN1 ports are connected, and No. 2 ports of FAN ports are divided into four tunnels, respectively The other end of the other end, ground, electric capacity C45 with resistance R67, transformer T5 No. 6 ports are connected, transformer T5 No. 3 ends Mouth is connected with diode D26 one end, and the diode D26 other end is divided into two-way, respectively one end with electric capacity C47, chip U13 VIN ports be connected, chip U13 VOUT ports are divided into three tunnels, respectively one end with electric capacity C49, resistance R66 one end, electricity Hold C50 one end be connected, the electric capacity C50 other end is divided into Shi Erlu, respectively one end with electric capacity C57, electric capacity C56 one end, Resistance R69 one end, ground, photoelectrical coupler U14A No. 2 ports, electric capacity C49 one end, resistance R68 one end, chip U13 GND ports, resistance R63 one end, electric capacity C47 one end, electric capacity C48 one end, transformer T5 No. 2 ports are connected, The electric capacity C56 other end is connected with the electric capacity C57 other end, photoelectrical coupler U14A No. 1 port and resistance R64 one end phase Even, the resistance R64 other end is divided into two-way, and the other end with resistance R69, voltage-regulator diode Z20 one end are connected respectively, voltage stabilizing The diode Z20 other end is divided into three tunnels, respectively the other end with resistance R63, the electric capacity C48 other end, the one of diode D32 End is connected, and the diode D32 other end is connected with transformer T5 No. 1 port, the one end of the VIN ports also with resistance R75 It is connected, the resistance R75 other end is divided into two-way, and one end with resistance R74, voltage-regulator diode Z2 one end are connected respectively, voltage stabilizing The diode Z2 other end is divided into one end respectively with resistance R24 of two-way, triode Q5 base stage is connected, triode Q5 current collection Pole is connected with COMP ports, and triode Q5 emitter stage is divided into three tunnels, respectively with resistance the R24 other end, signal ground, resistance The R74 other end is connected；The one end of the CFB ports also with resistance R28 is connected, and the resistance R28 other end is divided into two-way, respectively The G ports of one end, IGCT Q2 with resistance R27 are connected, and the resistance R27 other end is connected with signal ground, IGCT Q2 K ends Mouth is connected with signal ground, and IGCT Q2 A ports are connected with V port；The one end of the V port also with resistance R62 is connected, resistance The R62 other end is divided into three tunnels, and one end with VIN ports, resistance R70 one end, electric capacity C31 is connected respectively, and resistance R70's is another One end is connected with diode D33 one end, and the diode D33 other end is connected with No. 1 port of J2 ports, and electric capacity C31's is another One end is divided into two-way, and No. 2 ports with signal ground, J2 ports are connected respectively；No. 1 port of the J37 ports of power supply chip with Diode D34 one end is connected, and the diode D34 other end is connected with resistance R77 one end, and the resistance R77 other end is divided into Two-way, respectively one end with resistance R55, photoelectrical coupler U15 No. 1 port be connected, the resistance R55 other end is divided into four tunnels, One end with resistance R54, piezo-resistance R59 one end, photoelectrical coupler U16 No. 2 ports, the 2 of photoelectrical coupler U15 respectively Number port is connected, and the piezo-resistance R59 other end is connected with No. 3 ports of the J37 ports of power supply chip, and resistance R54's is another One end is divided into two-way, and one end with resistance R76, photoelectrical coupler U16 No. 1 port are connected respectively, the resistance R76 other end with Diode D35 one end is connected, and the diode D35 other end is connected with No. 5 ports of the J37 ports of power supply chip, photoelectricity Coupler U16 No. 4 ports are divided into three tunnels, respectively one end with resistance R57, electric capacity C37 one end, FET T8 gate pole It is connected, the resistance R57 other end is divided into two-way, and one end with resistance R71,15V power supplys are connected respectively, the resistance R71 other end It is divided into three tunnels, the drain electrode with FET T8, resistance R61 one end, FET T7 gate pole are connected respectively, FET T8 source ground, the resistance R61 other end are divided into three tunnels, respectively the drain electrode with FET T7, resistance R38 one end, Photoelectrical coupler U10 No. 1 port is connected, and FET T7 source electrode is divided into two-way, respectively with No. 2 of photoelectrical coupler U10 Port, ground are connected, and photoelectrical coupler U10 No. 3 ports are connected with No. 2 ports of QX1 ports, No. 4 of photoelectrical coupler U10 Port is connected with No. 1 port of QX1 ports, and the resistance R38 other end is connected with 15V power supplys, the other end point of the electric capacity C37 For three tunnels, No. 3 ports with photoelectrical coupler U16, electric capacity C38 one end, photoelectrical coupler U15 No. 4 ports are connected respectively, The electric capacity C38 other end is divided into two-way, is connected respectively with photoelectrical coupler U15 No. 3 ports, ground.