CN206811282U - A kind of the IGBT single-tube contravariants manual welding machine and its circuit of Width funtion input - Google Patents

A kind of the IGBT single-tube contravariants manual welding machine and its circuit of Width funtion input Download PDF

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Publication number
CN206811282U
CN206811282U CN201720642149.9U CN201720642149U CN206811282U CN 206811282 U CN206811282 U CN 206811282U CN 201720642149 U CN201720642149 U CN 201720642149U CN 206811282 U CN206811282 U CN 206811282U
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ports
resistance
diode
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electric capacity
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罗润泽
秦烽雄
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Shanghai Hezong Welding Equipment Manufacturing Co Ltd
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Shanghai Hezong Welding Equipment Manufacturing Co Ltd
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Abstract

It the utility model is related to the technical field of inverter type welder, concretely it is a kind of IGBT single-tube contravariants manual welding machine and its circuit of Width funtion input, the utility model uses IGBT single-pipe bridge-type inversion controls, by control circuit and power circuit mode arranged apart, reach non-interfering purpose, divide IGBT radiators and two big heating module of MUR output commutation diodes radiator to row median septum both sides, reach the radiating purpose of maximum, higher stable output current and weld load water holdup；Solves the problems, such as anti-dust performance using tube leg sheathing two ways, it is effectively prevented from some adsorbing powder dusts containing conductive metal after welding machine long-term use and diminishes to making to climb electric spacing between the component between IGBT pins, on circuit board, improves the reliability of welding machine work；The main power critical component cooling effectiveness of heating is improved, cyclic duration factor during High-current output is improved, solves the problems, such as that weld interval is short during High-current output, while effectively reduce fault rate.

Description

A kind of the IGBT single-tube contravariants manual welding machine and its circuit of Width funtion input
Technical field
The technical field of inverter type welder is the utility model is related to, is concretely that a kind of IGBT single tubes of Width funtion input are inverse Become manual welding machine and its circuit.
Background technology
In inverter type welder field, welding machine is typically to be powered by national grid.We China civil power be single-phase 220V or Three-phase 380V, but in some countries, line voltage not necessarily 220V either 380V, then can not complete to weld Operation, now just need it is a kind of can in certain input voltage range normal work electric welding machine.
The content of the invention
The utility model breaches the problem of prior art, and devising one kind can be normal in certain input voltage range The electric welding machine and its circuit of work.
In order to achieve the above object, the utility model devises a kind of IGBT single-tube contravariant manual weldings of Width funtion input Machine, including：Cabinet, mainboard, main transformer, air switch, it is characterised in that：Four base angles of outer side-lower position of chassis backplane It is fixed with foot pad, the inner side of cabinet rear board is provided with blower housing, and the top of blower housing is provided with air switch, in blower housing Blower fan is arranged with, the rear of air switch is provided with power line fixing terminal, and the rear of power line fixing terminal is provided with air switch Geometrical clamp, the outside of cabinet rear board are provided with fan air inlet, and the top of fan air inlet is provided with power supply wiring lattice, cabinet both sides The inner side of plate is provided with mainboard, control panel, and the side of mainboard is provided with power panel mounting box and main transformer, power panel mounting box it is upper Side is provided with relay switch boards, and the side of power panel mounting box is provided with power panel, and the front of power panel mounting box is provided with display electricity Road plate, display circuit board are embedded in case front panel, and the position that case front panel corresponds to display circuit board is provided with display operation Screen, display operator control panel are provided with operation knob, show that the lower section of operator control panel is provided with output rapid connector component.
The enclosure top is provided with handle.
The utility model devises a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input, including：Main electricity Road, control panel circuit, motherboard circuit, relay switch boards circuit and Switching Power Supply plate circuit, it is characterised in that：Main circuit is such as Under：The A ports of mainboard are connected with IGBT pipes T1 G ports, and IGBT pipes T1 C-terminal mouth is divided into six tunnels, respectively with the DC+ of power panel Port, electric capacity C1 one end, diode D3 one end, diode D2 one end, diode D1 one end, IGBT pipes T2 C-terminal Mouth is connected, and the diode D1 other end is divided into two-way, and one end with input power, diode D4 is connected respectively, diode D2's The other end is connected with diode D5 one end, the diode D3 other end is divided into two-way, respectively with power port, diode D6 One end is connected, and IGBT pipes T1 E ports are divided into two-way, respectively the C-terminal mouth with IGBT pipes T3, No. 3 ports of relay switch boards Be connected, IGBT pipes T3 G ends are connected with the C-terminal mouth of mainboard, and IGBT pipes T3 E ports are divided into six tunnels, respectively with the DC- of power panel Port, the electric capacity C1 other end, the diode D6 other end, the diode D5 other end, the diode D4 other end, IGBT pipes T4 E ports are connected, and IGBT pipes T4 C-terminal mouth is divided into two-way, respectively the E ports with IGBT pipes T2, transformer device T6 No. 2 ends Mouth is connected, and IGBT pipes T4 G ports are connected with the D ports of mainboard, and IGBT pipes T2 G ports are connected with the B ports of mainboard, relay 4, No. 5 ports of device switch boards are connected with main transformer T5 No. 1 port, main transformer T5 No. 2 ports and the 1 of transformer T6 Number port is connected, and main transformer T5 No. 6 ports are connected with diode D8 one end, and the diode D8 other end is divided into two-way, One end with diode D7, OUT+ ports are connected respectively, and main transformer T5 No. 7 ports are connected with OUT- ports, main transformer T5 No. 8 ports are connected with the diode D7 other end, and transformer T6 3, No. 4 ports are connected with control panel, the driving of mainboard Port is also connected with control panel, and power panel is also connected with control panel, and actual current circuit, heat are connected to below control panel Arc striking circuit, Arc circuit.
The control panel circuit is as follows：Control board chip U8 No. 1 port and No. 6 ports of relay switch boards J1 ports It is connected, control board chip U8 No. 2 ports are connected with diode D11 one end, and the diode D11 other end is with resistance R26's One end is connected, and the resistance R26 other end is connected with chip U10 SHDN ports, control board chip U8 No. 3 ports and+5V electricity Source is connected, and control board chip U8 No. 4 ports are connected with C MCU ports, control board chip U8 No. 5 ports and control board chip U20 CLK ports are connected, and control board chip U8 No. 6 ports are connected with making sheet chip U20 DATA ports, control board chip U8 No. 7 ports are with controlling board chip U20 LOAD ports to be connected, making sheet chip U8 No. 10 ports and resistance R145 one end It is connected, the resistance R145 other end is connected with swept resistance VR1 one end, swept resistance VR1 other end ground connection, swept resistance VR1 sliding end is connected with resistance R27 one end, and the resistance R27 other end is divided into two-way, respectively one end with resistance R25, put No. 3 ports of big U11A pairs of device are connected, and the resistance R25 other end is connected with swept resistance VR2 sliding end, swept resistance VR2 Both ends be connected with making sheet chip U8 No. 3 ports, amplifier U11A No. 2 ports are divided into two-way, respectively with resistance R138 One end, resistance R137 one end be connected, the resistance R138 other end is connected with resistance R162 one end, and resistance R162's is another End is connected with diode D29 one end, and the diode D29 other end is with controlling board chip U10 CT ports to be connected, resistance R137 The other end be connected with electric capacity C66 one end, the electric capacity C66 other end is divided into two-way, respectively with No. 1 of amplifier U11A end Mouth, resistance R56 one end are connected, and the resistance R56 other end is divided into two-way, and one end with resistance R61 controls board chip U10 respectively ERA+ ports be connected, the resistance R61 other end is connected with triode Q10 colelctor electrode, triode Q10 grounded emitter, Triode Q10 base stage is connected with diode Z32 one end, and the diode Z32 other end is connected with resistance R143 one end, electricity The resistance R143 other end is connected with switching power source chip U4 VFB ports, and control board chip U10 SHDN ports are divided into three tunnels, One end with resistance R59, resistance R62 one end, electric capacity C45 one end are connected respectively, resistance the R62 other end and control plate core Piece U10 CT ports are connected, and the resistance R59 other end is divided into two-way, and the other end with electric capacity C45, ground are connected respectively, control Board chip U10 COMP ports are connected with the ERA- ports of Switching Power Supply plate circuit, control board chip U10, control board chip U10 GUN ports ground connection, control board chip U10 VC ports, VIN ports be connected with control board chip U8 No. 3 ports, control Board chip U10 CS/SS ports are divided into three tunnels, respectively one end with resistance R51, resistance R52 one end, electric capacity C4 one end phase Even, for the resistance R51 other end with controlling board chip U10 VREF ports to be connected, the resistance R52 other end is divided into two-way, respectively The other end, ground with electric capacity C4 are connected, control board chip U10 AOUT ports and the PWM-A ports phase of relay switch boards Even, control board chip U10 BOUT ports are connected with the PWM-B ports of relay switch boards, control board chip U10 CT ports It is divided into two-way, one end with electric capacity C25, triode Q1 base stage are connected respectively, electric capacity C25 other end ground connection, triode Q1 Colelctor electrode with control board chip U10 VREF ports be connected, triode Q1 emitter stage is divided into two-way, respectively with control plate core Piece U10 CS+ ports, resistance R55 one end is connected, and the resistance R55 other end is connected with resistance R163 one end, resistance R153 The other end with controlling board chip U10 CT ports to be connected, control board chip U10 CS- ports ground connection, control board chip U10 RT ports be connected with resistance R57 one end, resistance R57 other end ground connection；Control board chip U8 No. 23 ports and resistance R1 one end is connected, and the resistance R1 other end is connected with+5V power supplys, and control board chip U8 No. 20 ports are divided into two-way, respectively One end, swept resistance VR5 sliding end with electric capacity C77 are connected, electric capacity C77 other end ground connection, swept resistance VR5 one end Be connected with+5V power supplys, swept resistance VR5 other end ground connection, control board chip U8 No. 19 ports are divided into two-way, respectively with electricity Hold C76 one end, swept resistance VR4 sliding end is connected, electric capacity C76 other end ground connection, swept resistance VR4 one end with+ 5V power supplys are connected, and swept resistance VR4 other end ground connection, control board chip U8 No. 18 ports are divided into two-way, respectively with electric capacity C75 one end, swept resistance VR3 sliding end are connected, electric capacity C75 other end ground connection, swept resistance VR3 one end and+5V Power supply is connected, and swept resistance VR3 other end ground connection, control board chip U20 No. 6 ports are connected with+5V power supplys ,+5V power supplys Also it is in series with resistance R16, LED5, controls the one end of board chip U20 7,8,9, No. 10 ports respectively with LED1 ~ LED4 to go here and there Connection, LED1 ~ LED4 harness-integrated No. 20 ports with controlling board chip U20 of the other end are connected, No. 7 of control board chip U20 Port controls board chip U20 No. 8 ports with controlling No. 7 of board chip U23 with controlling board chip U23 No. 11 ports to be connected Port is connected, and control board chip U20 No. 9 ports are with controlling board chip U23 No. 4 ports to be connected, and the 10 of control board chip U20 Number port is with controlling board chip U23 No. 2 ports to be connected, control board chip U20 No. 11 ports and the 1 of control board chip U23 Number port is connected, and control board chip U20 No. 12 ports are connected with control board chip U23 No. 10 ports, control board chip U20 No. 13 ports with controlling board chip U23 No. 5 ports to be connected, control board chip U20 No. 14 ports and control board chip U23 No. 3 ports be connected.
The motherboard circuit is as follows：No. 1 port of mainboard J17 ports is connected with DC+, No. 2 ports of mainboard J17 ports with DC- is connected, the tunnels of DC+ Fen Wei nine, respectively the current collection end with IGBT pipes T2, IGBT pipes T3 current collection end, electric capacity C14 one end, electricity Hinder R43 one end, electric capacity C17 one end, resistance R37 one end, electric capacity C12 one end, No. 4 ports of J1 ports, temperature-sensitive electricity Resistance RT1 one end is connected, and the thermistor RT1 other end is divided into two-way, is connected respectively with J1 No. 3 ports, DC+IN ports, J1 No. 1 port is divided into two-way, and the colelctor electrode with triode Q9, diode D21 one end are connected respectively, and diode D21's is another One end is divided into two-way, and one end with 24V power supplys, resistance R2 is connected respectively, and triode Q9 emitter stage is divided into two-way, respectively with letter Number ground, electric capacity C48 one end are connected, and the electric capacity C48 other end is divided into two-way, respectively the other end with resistance R2, diode Z20 Have single-phase company, the diode Z20 other end is connected with resistance R1 one end, the resistance R1 other end and triode Q9 base stage Be connected, J2 number port is connected with 21V power supplys, and the transmitting terminal of the IGBT pipes T2 is divided into three tunnels, respectively with BOUT ports, IGBT Pipe T1 current collection end, inversion electrical equipment T8 No. 2 ports are connected, and No. 1 port of inversion electrical equipment is connected with OUTB ports, inversion electrical equipment 3, No. 4 ports be connected with J17 1, No. 2 port, IGBT pipes T2 base terminal is connected with G2 ports, IGBT pipes T1 transmitting terminal Be divided into eight tunnels, respectively with DC- ports, IGBT pipes T4 transmitting terminal, electric capacity C15 one end, resistance R38 one end, electric capacity C17 The other end, the resistance R42 other end, the electric capacity C13 other end, DC-IN ports, IGBT pipes T1 base terminal and G4 ports phase Even, IGBT pipes T3 transmitting terminal is divided into two-way, and the current collection end with IGBT pipes T4, OUTA ports are connected respectively, IGBT pipes T3 base Extremely it is connected with G1, the base stage at IGBT ends is connected with right G3；Mainboard J4 No. 1 port is connected with 24V power supplys, No. 2 of mainboard J4 Port is connected with signal ground；Mainboard J16 1, No. 3 port is with controlling board chip U8 No. 3 ports to be connected, mainboard J16 No. 2 ends Mouth ground connection；Mainboard J15 1, No. 3 port is with controlling board chip U8 No. 3 ports to be connected, and mainboard J15 No. 2 ports ground connection is main Plate J15 No. 4 ports are divided into two-way, and one end with diode Z22, diode Z23 one end are connected respectively, diode Z22's The other end is connected with triode Q10 base stage, and triode Q10 emitter stage is divided into two-way, respectively with controlling No. 3 of board chip U8 Port, triode Q11 emitter stage are connected, and triode Q10 colelctor electrode is connected with resistance R69 one end, and resistance R69's is another End be divided into two-way, the colelctor electrode with triode Q12, transformer TR1 No. 1 port are connected respectively, the diode Z23 other end with Triode Q12 base stage is connected, triode Q12 grounded emitter, triode Q11 colelctor electrode and resistance R74 one end phase Even, the resistance R74 other end is divided into colelctor electrode of the two-way respectively with triode Q13, transformer TR1 No. 2 ports are connected, three poles Pipe Q11 base stage is connected with diode Z24 one end, and the diode Z24 other end is divided into No. 5 of two-way respectively with mainboard J15 Port, diode Z25 one end are connected, and the diode Z25 other end is connected with triode Q13 base stage, triode Q13 hair Emitter grounding, transformer TR1 No. 3 ports are divided into three tunnels, respectively the colelctor electrode with triode Q4, resistance R19 one end, two poles Pipe Z10 one end is connected, and the diode Z10 other end is divided into two-way, respectively the other end with resistance R19, the one of diode Z9 End be connected, the diode Z9 other end is connected with resistance R15 one end, and the resistance R15 other end is divided into two-way, respectively with electric capacity C20 one end, diode Z8 one end is connected, and the diode Z8 other end is divided into three tunnels, respectively the other end with electric capacity C20, Triode Q4 emitter stage, diode D1 one end are connected, and the diode D1 other end is divided into three tunnels, respectively with diode D2's One end, resistance R14 one end, transformer TR1 No. 4 ports are connected, and the diode D2 other end is divided into two-way, respectively with three poles Pipe Q4 base stage, the resistance R14 other end are connected；Transformer TR1 No. 5 ports are divided into three tunnels, respectively with the one of diode D8 End, diode D10 one end, resistance R23 one end are connected, and the diode D8 other end is divided into three tunnels, respectively with triode Q6 Emitter stage, diode Z14 one end, electric capacity C22 one end be connected, the diode D10 other end is divided into two-way, respectively with electricity The resistance R23 other end, triode Q6 base stage are connected, and the diode Z14 other end is divided into two-way, another with electric capacity C22 respectively One end, resistance R24 one end are connected, and the resistance R24 other end is connected with diode Z15 one end, the diode Z15 other end It is divided into two-way, one end with resistance R25, diode Z16 one end are connected respectively, and the diode Z16 other end is divided into three tunnels, point The colelctor electrode of the other end, triode Q6 not with resistance R25, transformer TR1 No. 6 ports are connected；Transformer TR1 No. 7 ends Mouth is divided into three tunnels, and the colelctor electrode with triode Q5, resistance R22 one end, diode Z13 one end are connected respectively, diode Z13 The other end be divided into two-way, the other end with resistance R22, diode Z12 one end are connected respectively, the diode Z12 other end It is connected with resistance R21 one end, the resistance R21 other end is divided into two-way, respectively one end with electric capacity C21, the one of diode Z11 End is connected, and the diode Z11 other end is divided into three tunnels, respectively the other end with electric capacity C21, triode Q5 emitter stage, two poles Pipe D3 one end is connected, and the diode D3 other end is divided into three tunnels, respectively one end with diode D4, resistance R20 one end, change Depressor TR1 No. 8 ports are connected, the diode D4 other end is divided into two-way, respectively the base stage with triode Q5, resistance R20 The other end is connected；Transformer TR1 No. 9 ports are divided into three tunnels, respectively one end with diode D12, diode D13 one end, Resistance R28 one end is connected, and the diode D12 other end is divided into three tunnels, respectively the emitter stage with triode Q7, diode Z17 One end, electric capacity C23 one end be connected, the diode D13 other end is divided into two-way, respectively the other end with resistance R26, three poles Pipe Q7 base stage is connected, and the diode Z17 other end is divided into two-way, respectively the other end with electric capacity C23, resistance R27 one end Be connected, the resistance R27 other end is connected with diode Z18 one end, and the diode Z18 other end is divided into two-way, respectively with electricity Resistance R28 one end, diode Z19 one end is connected, and the diode Z19 other end is divided into three tunnels, another with resistance R28 respectively End, triode Q7 colelctor electrode, transformer TR1 No. 10 ports are connected.
The relay switch boards circuit is as follows：No. 1 port of the mainboard J2 is connected with diode D2 one end, two poles The pipe D2 other end is connected with diode Z3 one end, and the diode Z3 other end is connected with diode Z1 one end, diode The Z1 other end is connected with resistance R2 one end, and the resistance R2 other end is divided into two-way, respectively one end with resistance R3, photoelectricity coupling Clutch U1 No. 1 port is connected, and No. 2 ports of the mainboard J2 are divided into two-way, respectively the other end with resistance R3, photoelectric coupling Device U1 No. 2 ports are connected, and photoelectrical coupler U1 No. 3 ports are divided into four tunnels, respectively the colelctor electrode with triode Q1, resistance R15 one end, ground, electric capacity C1 one end is connected, and photoelectrical coupler U1 No. 4 ports are divided into two-way, respectively with resistance R13's One end, triode Q1 base stage are connected, and the resistance R13 other end, are divided into three tunnels, respectively one end with resistance R1, diode D1 One end, J5 No. 1 port of relay switch boards be connected, the emitter stage of the triode Q1 is divided into four tunnels, respectively with resistance The R1 other end, the resistance R15 other end, the electric capacity C1 other end, amplifier U3C No. 10 ports are connected, amplifier U3C's No. 9 ports are connected with 5V power supplys, and amplifier U3C No. 8 ports are connected with FET T7 gate pole, FET T1 electric leakage Pole is divided into four tunnels, respectively the other end with diode D1, J5 No. 2 ports of relay switch boards, resistance R13 one end, electricity The one end for holding C6 is connected, and the J5 of relay switch boards No. 3 ports are connected with the J6 ports of mainboard, the J5's of relay switch boards No. 4 ports are connected with T-B ports, and the J5 of relay switch boards No. 4 ports are connected with T-A ports, FET T1 source electrode It is divided into two-way, one end with ground, resistance R8 is connected respectively, and the electric capacity C6 other end is divided into six tunnels, respectively with the one of resistance R10 End, the resistance R8 other end, electric capacity C8 one end, diode Z2 one end, amplifier U3A No. 3 ports, the 4 of amplifier U3B Number port is connected, and for the resistance R10 other end with controlling board chip U8 No. 3 ports to be connected, the electric capacity C8 other end is divided into two-way, The other end with ground, diode Z2 is connected respectively, and amplifier U3A No. 2 ports are connected with 10V power supplys, and the 1 of amplifier U3A Number port is connected with diode D4 one end, and the diode D4 other end is divided into two-way, respectively with No. 3 ends of mainboard J4 ports Mouth, diode D5 one end are connected, and the diode D5 other end is connected with amplifier U3C No. 7 ports, No. 5 of amplifier U3C Port is connected with 5V power supplys, the other end of the resistance R13 is divided into two-way, respectively one end with resistance R14, amplifier U3D No. 13 ports are connected, and resistance R14 other end ground connection, amplifier U3D No. 12 ports are connected with 5V power supplys, amplifier U3D's No. 14 ports are connected with diode D6 one end, and the diode D6 other end is connected with No. 4 ports of mainboard J4 ports, described 10V power supplys are also divided into two-way, and one end with resistance R11, resistance R9 one end are connected respectively, the resistance R11 other end and control Board chip U8 No. 3 ports are connected, and the resistance R9 other end is divided into two-way, and one end with 5V power supplys, resistance R12 is connected respectively, Resistance R12 other end ground connection.
The Switching Power Supply plate circuit is as follows：Switching Power Supply board chip U4 VFB ports are divided into five tunnels, respectively with photoelectricity coupling Clutch U9B No. 3 ports, electric capacity C15 one end, electric capacity C13 one end, resistance R9 one end, resistance R5 one end is connected, light Electric coupler U9B No. 4 ports are connected with Switching Power Supply board chip U4 VCC ports, and the electric capacity C13 other end is divided into two-way, The other end with resistance R5, Switching Power Supply board chip U4 COMP ports are connected respectively, and the resistance R9 other end is with electric capacity C15's The other end is connected, and Switching Power Supply board chip U4 RT/CT ports are connected with resistance R6 one end, resistance the R6 other end and switch Power supply board chip U4 VREF ports are connected, and Switching Power Supply board chip U4 ISNS ports are connected with resistance R11 one end, resistance The R11 other end is connected with CFB ports, one end also with resistance R19 of CFB ports, resistance R15 one end, FET T9 Source electrode is connected, and the resistance R19 other end is divided into three tunnels, respectively with short slab in R18 one end, electric capacity C21 one end, IGCT Q2 G ports be connected, the resistance R18 other end is divided into two-way, and the other end with electric capacity C21, signal ground are connected respectively, IGCT Q2 A ports be connected with Switching Power Supply board chip U4 VCC ports, IGCT Q2 K ports are connected with signal ground；Resistance R15's The other end is connected with signal ground, and FET T4 gate pole is connected with resistance R16 one end, resistance the R16 other end and switch Power supply board chip U4 OUT terminal mouth is connected, and FET T9 drain electrode is divided into two-way, respectively one end with diode D28, change Depressor TR2 No. 8 ports are connected, and the diode D28 other end is divided into two-way, respectively one end with resistance R7, the one of electric capacity C12 End is connected, and the resistance R7 other end is divided into three tunnels, respectively the other end with electric capacity C12, Switching Power Supply board chip U5 VIN ends Mouth, transformer T1 No. 10 ports are connected, and transformer T1 No. 12 ports are connected with diode D5 one end, and diode D5's is another One end is connected with resistance R12 one end, and the resistance R12 other end is connected with Switching Power Supply board chip U4 VCC ports, transformer T1 No. 14 ports are connected with signal ground, and transformer T1 No. 1 port is connected with diode D29 one end, and diode D29's is another One end is divided into three tunnels, and one end with electric capacity C43, resistance R45 one end, diode Z16 one end are connected respectively, diode Z16 The other end be divided into two-way, one end with resistance R47, resistance R46 one end are connected respectively, resistance the R46 other end and photoelectricity Coupler U9A No. 1 port is connected, photoelectrical coupler U9A No. 2 ports are divided into Shi Erlu, respectively with ground, electric capacity C40 One end, the resistance R47 other end, electric capacity C41 one end, electric capacity C36 one end, resistance R66 one end, electric capacity C35 one end, The resistance R45 other end, Switching Power Supply board chip U5 GND ports, electric capacity C30 one end, the electric capacity C43 other end, transformation Device TR2 No. 2 ports are connected, and the electric capacity C40 other end is connected with the electric capacity C41 other end, and the electric capacity C36 other end is divided into three Road, respectively the other end with resistance R66, the electric capacity C35 other end, Switching Power Supply board chip U5 VOUT ports be connected, electric capacity The C30 other end is divided into two-way, and the VIN ports with Switching Power Supply board chip U5, diode D22 one end are connected respectively, two poles The pipe D22 other end is connected with transformer TR2 No. 3 ports, and transformer T1 No. 6 ports are divided into 5 tunnels, respectively with electric capacity C27 One end, electric capacity C28 one end, ground, resistance R65 one end, No. 2 ports of blower fan be connected, No. 1 port of blower fan is divided into four Road, respectively the other end with resistance R65, the electric capacity C28 other end, the electric capacity C27 other end, diode D3 one end be connected, The diode D3 other end is connected with transformer T1 No. 7 ports；The VCC ports of the Switching Power Supply board chip U4 also with electricity Resistance R41 one end is connected, and the resistance R41 other end is divided into three tunnels, respectively the VIN ports with Switching Power Supply board chip U8, resistance R44 one end, electric capacity C20 one end is connected, and the electric capacity C20 other end is divided into two-way, respectively with signal ground, relay switch boards No. 2 ports of J1 ports be connected, the resistance R44 other end is connected with diode D23 one end, the diode D23 other end It is connected with No. 1 port of the J1 ports of relay switch boards.
The purpose of the utility model welding machine be to provide a kind of input voltage within the specific limits stepless change when can The Multi-functional arc welding generator of normal work, manual welding, manual welding VRD and simple argon arc welding can be carried out on the premise of low cost, Welding machine power supply can change in the range of 145V ~ 560V, reachable using IGBT single-pipe bridge-type inversion controls, output rated current 400A.The utility model welder circuit has its distinctive feature with structure design, and circuit board uses control circuit and power circuit Mode arranged apart, reach non-interfering purpose, be then with one piece of median septum close to afterbody blower fan in mechanical structure Based on, IGBT radiators and MUR are exported into two big heating module of commutation diode radiator and divide row median septum both sides, is reached most Big radiating purpose, the two features enable the utility model with less volume, and less component reaches higher steady Determine output current and weld load water holdup.The utility model welding machine is arranged on by power amplifier board in respective mounting box and IGBT Pin solves the problems, such as anti-dust performance using tube leg sheathing two ways, can be effectively prevented from working site after welding machine long-term use Some adsorbing powder dusts containing conductive metal diminish to making to climb electric spacing between the component between IGBT pins, on circuit board, The reliability of welding machine work is improved to a certain extent.It is high-power by configuring, Wind Volume, High-speed DC cooling blower, utilize The good air channel formed between high-power circuit plate, IGBT radiators, fast recovery diode radiator, to improve the main power of heating Key componentses cooling effectiveness, cyclic duration factor during High-current output is improved, weld interval when solving High-current output The problem of short, while effectively reduce the fault rate of IGBT, fast recovery diode and contravariant transformer.In summary, this practicality Not only input voltage is variable for new welder, and welding method is multi-functional, solves single-power voltage input, simple function welding machine application The problem of face is narrow, and the circuit theory of welding machine, circuit board and complete machine structure design have the distinctive feature of oneself.
Brief description of the drawings
Accompanying drawing 1 is Structure explosion diagram of the present utility model
Accompanying drawing 2 is main circuit of the present utility model and control circuit theory diagram
Accompanying drawing 3 is the utility model operation and display, control panel circuit theory diagrams
Accompanying drawing 4 is the utility model motherboard circuit schematic diagram
Accompanying drawing 5 is the utility model relay switch boards circuit theory diagrams
Accompanying drawing 6 is Switching Power Supply plate circuit theory diagrams of the present utility model.
Embodiment
The utility model is described further with reference to accompanying drawing.
Referring to Fig. 1, the utility model devises a kind of IGBT single-tube contravariant manual welding machines of Width funtion input, including：Machine Case, mainboard, main transformer, air switch, four base angles of outer side-lower position of the bottom plate of cabinet 10 are fixed with foot pad 11, cabinet 10 The inner side of rear board is provided with blower housing 8, and the top of blower housing 8 is provided with air switch 7, blower fan is arranged with blower housing 8 9, the rear of air switch 7 is provided with power line fixing terminal 2, and the rear of power line fixing terminal 2 is provided with air switch geometrical clamp 3, the outside of the rear board of cabinet 10 is provided with fan air inlet 6, and the top of fan air inlet 6 is provided with power supply wiring lattice 5,10 liang of cabinet The inner side of side plate is provided with mainboard 19, control panel 22, and the side of mainboard 19 is provided with power panel mounting box 13 and main transformer 12, power supply The top of plate mounting box 13 is provided with relay switch boards 16, and the side of power panel mounting box 13 is provided with power panel 21, power panel peace The front of mounted box 13 is provided with display circuit board 20, and display circuit board 20 is embedded in the front panel of cabinet 10, the front panel pair of cabinet 10 The position of display circuit board 20 is answered to be provided with display operator control panel 18, display operator control panel 18 is provided with operation knob 17, shows operator control panel 18 lower section is provided with output rapid connector component 15.
The top of cabinet 10 is provided with handle 1 in the utility model.
Referring to Fig. 2 ~ Fig. 6, the utility model devises a kind of electricity of the IGBT single-tube contravariant manual welding machines of Width funtion input Road, including：Main circuit, control panel circuit, motherboard circuit, relay switch boards circuit and Switching Power Supply plate circuit, its feature exist In：Main circuit is as follows：The A ports of mainboard are connected with IGBT pipes T1 G ports, and IGBT pipes T1 C-terminal mouth is divided into six tunnels, respectively with The DC+ ports of power panel, electric capacity C1 one end, diode D3 one end, diode D2 one end, diode D1 one end, IGBT pipes T2 C-terminal mouth is connected, and the diode D1 other end is divided into two-way, respectively with one end phase of input power, diode D4 Even, the diode D2 other end is connected with diode D5 one end, and the diode D3 other end is divided into two-way, respectively with power end Mouth, diode D6 one end are connected, and IGBT pipes T1 E ports are divided into two-way, and C-terminal mouth, the relay with IGBT pipes T3 are cut respectively No. 3 ports for changing plate are connected, and IGBT pipes T3 G ends are connected with the C-terminal mouth of mainboard, and IGBT pipes T3 E ports are divided into six tunnels, respectively With the DC- ports of power panel, the electric capacity C1 other end, the diode D6 other end, the diode D5 other end, diode D4 The other end, IGBT pipes T4 E ports are connected, and IGBT pipes T4 C-terminal mouth is divided into two-way, respectively the E ports with IGBT pipes T2, mutual inductance Device device T6 No. 2 ports are connected, and IGBT pipes T4 G ports are connected with the D ports of mainboard, IGBT pipes T2 G ports and the B of mainboard Port is connected, and 4, No. 5 ports of relay switch boards are connected with main transformer T5 No. 1 port, main transformer T5 No. 2 ports It is connected with transformer T6 No. 1 port, main transformer T5 No. 6 ports are connected with diode D8 one end, and diode D8's is another One end is divided into two-way, and one end with diode D7, OUT+ ports are connected respectively, main transformer T5 No. 7 ports and OUT- ports It is connected, main transformer T5 No. 8 ports are connected with the diode D7 other end, transformer T6 3, No. 4 ports and control panel phase Even, the driving port of mainboard is also connected with control panel, and power panel is also connected with control panel, and reality is connected to below control panel Border current circuit, hot start circuit, Arc circuit.
Control panel circuit is as follows in the utility model：Control board chip U8 No. 1 port and relay switch boards J1 ports No. 6 ports be connected, control board chip U8 No. 2 ports are connected with diode D11 one end, the diode D11 other end and Resistance R26 one end is connected, and the resistance R26 other end is connected with chip U10 SHDN ports, control board chip U8 No. 3 ends Mouthful be connected with+5V power supplys, control board chip U8 No. 4 ports are connected with C MCU ports, control board chip U8 No. 5 ports and Control board chip U20 CLK ports are connected, and control board chip U8 No. 6 ports are connected with making sheet chip U20 DATA ports, Control board chip U8 No. 7 ports are with controlling board chip U20 LOAD ports to be connected, making sheet chip U8 No. 10 ports and resistance R145 one end is connected, and the resistance R145 other end is connected with swept resistance VR1 one end, swept resistance VR1 another termination Ground, swept resistance VR1 sliding end are connected with resistance R27 one end, and the resistance R27 other end is divided into two-way, respectively with resistance R25 one end, No. 3 ports of U11A pairs of amplifier are connected, and the resistance R25 other end is connected with swept resistance VR2 sliding end, Swept resistance VR2 both ends are connected with making sheet chip U8 No. 3 ports, and amplifier U11A No. 2 ports are divided into two-way, respectively One end, resistance R137 one end with resistance R138 are connected, and the resistance R138 other end is connected with resistance R162 one end, resistance The R162 other end is connected with diode D29 one end, the diode D29 other end and the CT ports phase for controlling board chip U10 Even, the resistance R137 other end is connected with electric capacity C66 one end, and the electric capacity C66 other end is divided into two-way, respectively with amplifier U11A No. 1 port, resistance R56 one end is connected, and the resistance R56 other end is divided into two-way, and one end with resistance R61 is controlled respectively Making sheet chip U10 ERA+ ports are connected, and the resistance R61 other end is connected with triode Q10 colelctor electrode, triode Q10's Grounded emitter, triode Q10 base stage are connected with diode Z32 one end, and the diode Z32 other end is with resistance R143's One end is connected, and the resistance R143 other end is connected with switching power source chip U4 VFB ports, control board chip U10 SHDN ends Mouth is divided into three tunnels, and one end with resistance R59, resistance R62 one end, electric capacity C45 one end are connected respectively, and resistance R62's is another End with control board chip U10 CT ports be connected, the resistance R59 other end is divided into two-way, respectively the other end with electric capacity C45, Ground is connected, and control board chip U10 COMP ports are connected with the ERA- ports of Switching Power Supply plate circuit, control board chip U10, Control board chip U10 GUN ports ground connection, control board chip U10 VC ports, No. 3 of VIN ports and control board chip U8 Port is connected, and control board chip U10 CS/SS ports are divided into three tunnels, respectively one end with resistance R51, resistance R52 one end, Electric capacity C4 one end is connected, and the resistance R51 other end is with controlling board chip U10 VREF ports to be connected, the resistance R52 other end It is divided into two-way, the other end with electric capacity C4, ground are connected respectively, control board chip U10 AOUT ports and relay switch boards PWM-A ports be connected, control board chip U10 BOUT ports are connected with the PWM-B ports of relay switch boards, control plate core Piece U10 CT ports are divided into two-way, and one end with electric capacity C25, triode Q1 base stage are connected respectively, the electric capacity C25 other end Ground connection, for triode Q1 colelctor electrode with controlling board chip U10 VREF ports to be connected, triode Q1 emitter stage is divided into two-way, Respectively with controlling board chip U10 CS+ ports, resistance R55 one end to be connected, the resistance R55 other end and the one of resistance R163 End is connected, and with controlling board chip U10 CT ports to be connected, control board chip U10 CS- ports connect the resistance R153 other end Ground, control board chip U10 RT ports are connected with resistance R57 one end, resistance R57 other end ground connection；Control board chip U8 No. 23 ports be connected with resistance R1 one end, the resistance R1 other end is connected with+5V power supplys, control board chip U8 No. 20 ends Mouth is divided into two-way, and one end with electric capacity C77, swept resistance VR5 sliding end are connected respectively, electric capacity C77 other end ground connection, sliding Dynamic resistance VR5 one end is connected with+5V power supplys, swept resistance VR5 other end ground connection, control board chip U8 No. 19 ports point For two-way, one end with electric capacity C76, swept resistance VR4 sliding end are connected respectively, electric capacity C76 other end ground connection, slide electricity Resistance VR4 one end is connected with+5V power supplys, and swept resistance VR4 other end ground connection, control board chip U8 No. 18 ports are divided into two Road, respectively one end with electric capacity C75, swept resistance VR3 sliding end be connected, electric capacity C75 other end ground connection, swept resistance VR3 one end is connected with+5V power supplys, swept resistance VR3 other end ground connection, control board chip U20 No. 6 ports and+5V electricity Source is connected, and+5V power supplys are also in series with resistance R16, LED5, control board chip U20 7,8,9, No. 10 ports respectively with LED1 ~ LED4 one end series connection, LED1 ~ LED4 harness-integrated No. 20 ports with controlling board chip U20 of the other end are connected, control panel Chip U20 No. 7 ports are with controlling board chip U23 No. 11 ports to be connected, control board chip U20 No. 8 ports and control panel Chip U23 No. 7 ports are connected, and control board chip U20 No. 9 ports control with controlling board chip U23 No. 4 ports to be connected Board chip U20 No. 10 ports are with controlling board chip U23 No. 2 ports to be connected, control board chip U20 No. 11 ports and control Board chip U23 No. 1 port is connected, and control board chip U20 No. 12 ports are connected with control board chip U23 No. 10 ports, Control board chip U20 No. 13 ports are connected with control board chip U23 No. 5 ports, control board chip U20 No. 14 ports and Control board chip U23 No. 3 ports are connected.
Motherboard circuit is as follows in the utility model：No. 1 port of mainboard J17 ports is connected with DC+, and the 2 of mainboard J17 ports Number port is connected with DC-, the tunnels of DC+ Fen Wei nine, respectively the current collection end with IGBT pipes T2, IGBT pipes T3 current collection end, electric capacity C14 One end, resistance R43 one end, electric capacity C17 one end, resistance R37 one end, electric capacity C12 one end, J1 ports No. 4 ports, Thermistor RT1 one end is connected, and the thermistor RT1 other end is divided into two-way, respectively with J1 No. 3 ports, DC+IN ports It is connected, J1 No. 1 port is divided into two-way, and the colelctor electrode with triode Q9, diode D21 one end are connected respectively, diode D21 The other end be divided into two-way, one end with 24V power supplys, resistance R2 is connected respectively, and triode Q9 emitter stage is divided into two-way, respectively It is connected with one end of signal ground, electric capacity C48, the electric capacity C48 other end is divided into two-way, respectively the other end with resistance R2, two poles Pipe Z20's has single-phase company, and the diode Z20 other end is connected with resistance R1 one end, resistance the R1 other end and triode Q9 Base stage be connected, J2 number port is connected with 21V power supplys, and the transmitting terminal of the IGBT pipes T2 is divided into three tunnels, respectively with BOUT ends Mouth, IGBT pipes T1 current collection end, inversion electrical equipment T8 No. 2 ports are connected, and No. 1 port of inversion electrical equipment is connected with OUTB ports, 3, No. 4 ports of inversion electrical equipment are connected with J17 1, No. 2 port, and IGBT pipes T2 base terminal is connected with G2 ports, IGBT pipes T1 Transmitting terminal be divided into eight tunnels, respectively with DC- ports, IGBT pipes T4 transmitting terminal, electric capacity C15 one end, resistance R38 one end, The electric capacity C17 other end, the resistance R42 other end, the electric capacity C13 other end, DC-IN ports, IGBT pipes T1 base terminal with G4 ports are connected, and IGBT pipes T3 transmitting terminal is divided into two-way, and the current collection end with IGBT pipes T4, OUTA ports are connected respectively, IGBT Pipe T3 base terminal is connected with G1, and the base stage at IGBT ends is connected with right G3；Mainboard J4 No. 1 port is connected with 24V power supplys, mainboard J4 No. 2 ports are connected with signal ground；Mainboard J16 1, No. 3 port is with controlling board chip U8 No. 3 ports to be connected, mainboard J16 No. 2 ports ground connection；Mainboard J15 1, No. 3 port is with controlling board chip U8 No. 3 ports to be connected, mainboard J15 No. 2 ports Ground connection, mainboard J15 No. 4 ports are divided into two-way, and one end with diode Z22, diode Z23 one end are connected respectively, two poles The pipe Z22 other end is connected with triode Q10 base stage, and triode Q10 emitter stage is divided into two-way, respectively with controlling board chip U8 No. 3 ports, triode Q11 emitter stage are connected, and triode Q10 colelctor electrode is connected with resistance R69 one end, resistance The R69 other end is divided into two-way, and the colelctor electrode with triode Q12, transformer TR1 No. 1 port are connected respectively, diode Z23 The other end be connected with triode Q12 base stage, triode Q12 grounded emitter, triode Q11 colelctor electrode and resistance R74 one end is connected, and the resistance R74 other end is divided into colelctor electrode of the two-way respectively with triode Q13, transformer TR1 No. 2 ends Mouthful be connected, triode Q11 base stage is connected with diode Z24 one end, the diode Z24 other end be divided into two-way respectively with master Plate J15 No. 5 ports, diode Z25 one end is connected, and the diode Z25 other end is connected with triode Q13 base stage, and three Pole pipe Q13 grounded emitter, transformer TR1 No. 3 ports are divided into three tunnels, respectively the colelctor electrode with triode Q4, resistance R19 One end, diode Z10 one end be connected, the diode Z10 other end is divided into two-way, respectively the other end with resistance R19, two Pole pipe Z9 one end is connected, and the diode Z9 other end is connected with resistance R15 one end, and the resistance R15 other end is divided into two-way, One end with electric capacity C20, diode Z8 one end are connected respectively, and the diode Z8 other end is divided into three tunnels, respectively with electric capacity C20 The other end, triode Q4 emitter stage, diode D1 one end be connected, the diode D1 other end is divided into three tunnels, respectively with Diode D2 one end, resistance R14 one end, transformer TR1 No. 4 ports are connected, and the diode D2 other end is divided into two-way, The base stage with triode Q4, the resistance R14 other end are connected respectively；Transformer TR1 No. 5 ports are divided into three tunnels, respectively with two Pole pipe D8 one end, diode D10 one end, resistance R23 one end are connected, and the diode D8 other end is divided into three tunnels, respectively One end, electric capacity C22 one end of emitter stage, diode Z14 with triode Q6 are connected, and the diode D10 other end is divided into two Road, respectively the other end with resistance R23, triode Q6 base stage be connected, the diode Z14 other end is divided into two-way, respectively with The electric capacity C22 other end, resistance R24 one end are connected, and the resistance R24 other end is connected with diode Z15 one end, diode The Z15 other end is divided into two-way, and one end with resistance R25, diode Z16 one end are connected respectively, the diode Z16 other end It is divided into three tunnels, the other end with resistance R25, triode Q6 colelctor electrode, transformer TR1 No. 6 ports are connected respectively；Transformer TR1 No. 7 ports are divided into three tunnels, respectively the colelctor electrode with triode Q5, resistance R22 one end, diode Z13 one end phase Even, the diode Z13 other end is divided into two-way, and the other end with resistance R22, diode Z12 one end are connected respectively, diode The Z12 other end is connected with resistance R21 one end, and the resistance R21 other end is divided into two-way, respectively one end with electric capacity C21, two Pole pipe Z11 one end is connected, the diode Z11 other end is divided into three tunnels, respectively the other end with electric capacity C21, triode Q5 Emitter stage, diode D3 one end are connected, and the diode D3 other end is divided into three tunnels, respectively one end with diode D4, resistance R20 one end, transformer TR1 No. 8 ports are connected, and the diode D4 other end is divided into two-way, respectively with triode Q5 base Pole, the resistance R20 other end are connected；Transformer TR1 No. 9 ports are divided into three tunnels, respectively one end with diode D12, two poles Pipe D13 one end, resistance R28 one end is connected, and the diode D12 other end is divided into three tunnels, respectively with triode Q7 transmitting Pole, diode Z17 one end, electric capacity C23 one end are connected, and the diode D13 other end is divided into two-way, respectively with resistance R26 The other end, triode Q7 base stage be connected, the diode Z17 other end is divided into two-way, respectively the other end with electric capacity C23, Resistance R27 one end is connected, and the resistance R27 other end is connected with diode Z18 one end, and the diode Z18 other end is divided into Two-way, respectively one end with resistance R28, diode Z19 one end be connected, the diode Z19 other end is divided into three tunnels, respectively with The resistance R28 other end, triode Q7 colelctor electrode, transformer TR1 No. 10 ports are connected.
The circuit of relay switch boards described in the utility model is as follows：No. 1 port of the mainboard J2 is with diode D2's One end is connected, and the diode D2 other end is connected with diode Z3 one end, the diode Z3 other end and the one of diode Z1 End be connected, the diode Z1 other end is connected with resistance R2 one end, and the resistance R2 other end is divided into two-way, respectively with resistance R3 One end, photoelectrical coupler U1 No. 1 port be connected, No. 2 ports of the mainboard J2 are divided into two-way, another with resistance R3 respectively One end, photoelectrical coupler U1 No. 2 ports are connected, and photoelectrical coupler U1 No. 3 ports are divided into four tunnels, respectively with triode Q1's Colelctor electrode, resistance R15 one end, ground, electric capacity C1 one end are connected, and photoelectrical coupler U1 No. 4 ports are divided into two-way, respectively One end, triode Q1 base stage with resistance R13 are connected, and the resistance R13 other end, are divided into three tunnels, respectively with the one of resistance R1 End, diode D1 one end, J5 No. 1 port of relay switch boards are connected, and the emitter stage of the triode Q1 is divided into four tunnels, The other end with resistance R1, the resistance R15 other end, the electric capacity C1 other end, amplifier U3C No. 10 ports are connected respectively, Amplifier U3C No. 9 ports are connected with 5V power supplys, and amplifier U3C No. 8 ports are connected with FET T7 gate pole, field effect Should pipe T1 drain electrode be divided into four tunnels, respectively the other end with diode D1, relay switch boards J5 No. 2 ports, resistance R13 one end, electric capacity C6 one end is connected, and the J5 of relay switch boards No. 3 ports are connected with the J6 ports of mainboard, relay The J5 of switch boards No. 4 ports are connected with T-B ports, and the J5 of relay switch boards No. 4 ports are connected with T-A ports, field effect Should pipe T1 source electrode be divided into two-way, one end with ground, resistance R8 is connected respectively, and the electric capacity C6 other end is divided into six tunnels, respectively No. 3 ends of one end, the resistance R8 other end, electric capacity C8 one end, diode Z2 one end, amplifier U3A with resistance R10 Mouth, amplifier U3B No. 4 ports are connected, and the resistance R10 other end is connected with control board chip U8 No. 3 ports, electric capacity C8's The other end is divided into two-way, and the other end with ground, diode Z2 is connected respectively, amplifier U3A No. 2 ports and 10V power supply phases Even, amplifier U3A No. 1 port is connected with diode D4 one end, and the diode D4 other end is divided into two-way, respectively with mainboard No. 3 ports, diode D5 one end of J4 ports are connected, and the diode D5 other end is connected with amplifier U3C No. 7 ports, Amplifier U3C No. 5 ports are connected with 5V power supplys, and the other end of the resistance R13 is divided into two-way, respectively with the one of resistance R14 End, amplifier U3D No. 13 ports are connected, resistance R14 other end ground connection, amplifier U3D No. 12 ports and 5V power supply phases Even, amplifier U3D No. 14 ports are connected with diode D6 one end, the diode D6 other end and No. 4 of mainboard J4 ports Port is connected, and the 10V power supplys are also divided into two-way, and one end with resistance R11, resistance R9 one end are connected respectively, resistance R11's The other end with control board chip U8 No. 3 ports be connected, the resistance R9 other end is divided into two-way, respectively with 5V power supplys, resistance R12 One end be connected, resistance R12 other end ground connection.
Switching Power Supply plate circuit is as follows in the utility model：Switching Power Supply board chip U4 VFB ports are divided into five tunnels, respectively No. 3 ports, electric capacity C15 one end, electric capacity C13 one end, resistance R9 one end with photoelectrical coupler U9B, the one of resistance R5 End is connected, and photoelectrical coupler U9B No. 4 ports are connected with Switching Power Supply board chip U4 VCC ports, the electric capacity C13 other end Be divided into two-way, the other end with resistance R5, Switching Power Supply board chip U4 COMP ports are connected respectively, the resistance R9 other end with The electric capacity C15 other end is connected, and Switching Power Supply board chip U4 RT/CT ports are connected with resistance R6 one end, and resistance R6's is another One end is connected with Switching Power Supply board chip U4 VREF ports, Switching Power Supply board chip U4 ISNS ports and the one of resistance R11 End is connected, and the resistance R11 other end is connected with CFB ports, one end, resistance R15 one end, field of the CFB ports also with resistance R19 Effect pipe T9 source electrode is connected, and the resistance R19 other end is divided into three tunnels, respectively with short slab R18 one end, electric capacity C21 one End, IGCT Q2 G ports are connected, and the resistance R18 other end is divided into two-way, respectively the other end with electric capacity C21, signal ground phase Even, IGCT Q2 A ports are connected with Switching Power Supply board chip U4 VCC ports, IGCT Q2 K ports and signal ground phase Even；The resistance R15 other end is connected with signal ground, and FET T4 gate pole is connected with resistance R16 one end, resistance R16's The other end is connected with Switching Power Supply board chip U4 OUT terminal mouth, and FET T9 drain electrode is divided into two-way, respectively with diode D28 one end, transformer TR2 No. 8 ports are connected, and the diode D28 other end is divided into two-way, respectively with the one of resistance R7 End, electric capacity C12 one end are connected, and the resistance R7 other end is divided into three tunnels, respectively the other end with electric capacity C12, Switching Power Supply plate Chip U5 VIN ports, transformer T1 No. 10 ports are connected, transformer T1 No. 12 ports and diode D5 one end phase Even, the diode D5 other end is connected with resistance R12 one end, the resistance R12 other end and Switching Power Supply board chip U4 VCC Port is connected, and transformer T1 No. 14 ports are connected with signal ground, transformer T1 No. 1 port and diode D29 one end phase Even, the diode D29 other end is divided into three tunnels, respectively one end with electric capacity C43, resistance R45 one end, the one of diode Z16 End is connected, and the diode Z16 other end is divided into two-way, and one end with resistance R47, resistance R46 one end are connected respectively, resistance The R46 other end is connected with photoelectrical coupler U9A No. 1 port, and photoelectrical coupler U9A No. 2 ports are divided into Shi Erlu, respectively With ground, electric capacity C40 one end, the resistance R47 other end, electric capacity C41 one end, electric capacity C36 one end, resistance R66 one End, electric capacity C35 one end, the resistance R45 other end, Switching Power Supply board chip U5 GND ports, electric capacity C30 one end, electric capacity The C43 other end, transformer TR2 No. 2 ports are connected, and the electric capacity C40 other end is connected with the electric capacity C41 other end, electric capacity The C36 other end is divided into three tunnels, respectively the other end with resistance R66, the electric capacity C35 other end, Switching Power Supply board chip U5 VOUT ports are connected, and the electric capacity C30 other end is divided into two-way, respectively the VIN ports with Switching Power Supply board chip U5, diode D22 one end is connected, and the diode D22 other end is connected with transformer TR2 No. 3 ports, and transformer T1 No. 6 ports are divided into 5 tunnels, respectively one end with electric capacity C27, electric capacity C28 one end, ground, resistance R65 one end, No. 2 ports of blower fan be connected, wind No. 1 port of machine is divided into four tunnels, respectively the other end with resistance R65, the electric capacity C28 other end, the electric capacity C27 other end, two Pole pipe D3 one end is connected, and the diode D3 other end is connected with transformer T1 No. 7 ports；The Switching Power Supply board chip U4 One end also with resistance R41 of VCC ports be connected, the resistance R41 other end is divided into three tunnels, respectively with Switching Power Supply board chip U8 VIN ports, resistance R44 one end, electric capacity C20 one end are connected, and the electric capacity C20 other end is divided into two-way, respectively with letter Number ground, No. 2 ports of J1 ports of relay switch boards are connected, and the resistance R44 other end is connected with diode D23 one end, The diode D23 other end is connected with No. 1 port of the J1 ports of relay switch boards.
In specific implementation, power supply air switch 7, power supply line, power line wiring lattice 5, cooling fan 9；Power line It is linked to power supply grid.Power switch 7 controls the on-off of welding machine electric power.Cooling fan 9 is pointed to the rear portion of welding machine, butt welding machine Some internal parts carry out forced air cooling, and cold wind enters from the air admission hole 6 of welding machine case back plate, internal then leaned on one piece Based on the median septum of caudad blower fan, IGBT radiators and MUR are exported into commutation diode radiator two big heating module point Row median septum both sides, this two big heating module can be made to obtain best cooling, such air channel and type of cooling design, favorably In the reliability for ensureing welder circuit work, this simultaneously and the utility model welding machine can realize stable 400A output currents and The major reason of high capacity water holdup.
Export rapid connector component 15, operation and display control panel 18；It is designed with operation and display control panel Manual welding and manual welding VRD and lift arc striking type argon arc welding switching button and its status indicator lamp, indicator of the power supply status, Overtemperature protection status indicator lamp, current adjusting knob, hot start adjusting knob, Arc adjusting knob；
As shown in figure 1, two groups of output snap joint holder assemblies divide on front panel during the utility model welding machine manual electric arc welding Welding clamp cable and workpiece clamp cable Yong Yu not connected.Polarity during connection can determine connection according to the species and requirement of welding rod Mode.Positive pole out splice going splice has gem-pure mark with negative pole out splice going splice on front panel.
Operation to the utility model welding machine with display control panel 18, be designed with manual welding and manual welding VRD and Lift the switching button and its status indicator lamp, indicator of the power supply status, overtemperature protection status indicator lamp, electricity of arc striking type argon arc welding Flow adjusting knob, hot start adjusting knob, Arc adjusting knob.Manual welding and manual welding VRD and lifting arc striking type argon The switching button of arc-welding is used for the selection of three kinds of welding methods, and has corresponding indicator lamp to indicate its state；Overtemperature protection state Indicator lamp（Yellow）Whether instruction superheat state occurs.When inner components temperature exceeds the operating temperature of thermistor, control Circuit processed starts to act, and can light the indicator lamp, welding machine is stopped welding or output in addition, in the feelings that welding machine does not export Under condition, the cooling effect of blower fan can be such that the constant temperature of device is reduced to below recovery temperature, and now control circuit makes machine extensive Multiple normal work, overtemperature protection status indicator lamp extinguish, and welding machine can be welded again.
Control circuit plate part of the present utility model includes mainboard 19, display circuit board 20, Switching Power Supply plate 21, relay Switch boards 16 etc., circuit board element point two sides arrange that positive device is mainly the electronic component or parts of plug-in type, Mainly complete to process by the way of automatic and artificial plug-in unit, welding.The device of back of circuit board is mainly SMD electricity Sub- component or parts, all complete to process by the way of automatic chip mounting and welding.Just think, if all of component With parts all in circuit board front, then the size of circuit board necessarily increases, and this will increase the size and weight of welding machine.By This visible the utility model welding machine is because circuit board size is small, and design structure is compact, therefore the board production manufacturing procedure of welding machine is few, Manufacture craft is greatly simplified, more convenient production.Such design and processing technology, it can ensure that product has higher production Efficiency, while production cost is reduced, be advantageous to improve the competitiveness of product in market.
From the point of view of the related circuit function of accompanying drawing, the circuit of the utility model welding machine is mainly the defeated of completion power supply Enter, the feedback of input voltage and control, pwm pulse width modulated, IGBT pipes drive control and inversion, different welding methods it is inverse Become the control of circuit output parameter, the selection and control of welding method, finally in the presence of control circuit, realize Width funtion respectively Manual welding, manual welding VRD and every control of simple argon arc welding require under input condition.
It is main circuit and the control circuit theory diagram of the utility model welding machine as shown in Figure 2, with reference to this figure by this welding machine The operation principle of circuit is summarized as follows：The central characteristics of the utility model welding machine are one piece of relays in primary anode Switch boards, this block pcb board are the true causes why the utility model welding machine can support Width funtion to input, and it can basis When the size of input voltage is to control the number of turn of primary to reach different control sources can with the purpose of normal work, As shown in Figure 5, circuit is mainly by relay J5, switch, triode Q1, optocoupler U1 and resistance, electric capacity, steady for physical circuit The transformer switching circuit of pressure pipe composition, the major function of this partial circuit are can be become according to input voltage come adjust automatically The primary number of turn of depressor.It is directly in the sampled signal at the positive and negative both ends of output of rectifier bridge, by a voltage stabilizing that COM2, which inserts shell J2, Enter optocoupler primary U1A after pipe Z1, voltage-stabiliser tube is crucial in this section of circuit, when the sampled signal of input is higher than the breakdown of voltage-stabiliser tube Voltage, then U1A conductings, optocoupler are started working, pass the signal along to the other end, be pulled low triode Q1 B pin, and triode is cut Only, VCC signal is input to FET T1 G pin by comparator U3C, makes its start-up operation, and D pin signals are pulled low, relay Adhesive, switch 34 are connected, and 35 disconnect, and complete conversion of the primary from T-A to T-B.Such operation principle causes a machine to Enough adapt to different input voltages, it is only necessary to do other components of machine according to the specification of maximum input voltage, then Switch the different primary numbers of turn according to different input voltages, you can realize the Width funtion input of welding machine.
Machine input power cord is defaulted as triple line and adds a ground wire, and electricity is connected by the air switch on welding machine rear board Network source, electric network source are directly entered mainboard by being changed into stable HVDC DC+ and DC- after a three-phase commutation bridge PCB, four single tubes IGBT module T1, T2, T3, T4, including four Large Copacities electricity for being used for main circuit energy storage are installed on mainboard No. four drive circuits of plug-in unit electric capacity and IGBT module including solution electric capacity.On the one hand, ± DC signals are given by IGBT and electric capacity Bridge inverter main circuit Deng composition provides inversion, and this part inverter circuit makes HVDC ± DC be converted to midfrequent AC electricity output Primary to inversion main transformer, main transformer realizes the conversion of voltage drop and High-current output, defeated to MUR by secondary output Go out cowling panel, can be used for welding after exporting rectification.On the other hand, powered by ± DC to power panel ,+24V can be exported Signal supplies each pcb board with VCC signal and serves as power supply or signal source.Electricity is installed on primary line on mainboard Current transformer, this is at current signal collection, and is provided with voltage between the positive negative output rapid connector component on front panel Signal pickup assembly, the current signal collected and voltage signal data are transferred to control panel at two, made by control panel by this Respond, this is the feedback control link of the utility model welding machine.
To this welding machine operation and display control panel on, be designed with a three Digital sum pipes, manual welding and manual welding VRD with And gas shield welding power and energy button and its status indicator lamp, indicator of the power supply status, overtemperature protection status indicator lamp, current regulation Potentiometer, hot start regulation potentiometer, electric arc reasoning regulation potentiometer.Three Digital sum pipes are used for the output current for showing machine Size；Manual welding and manual welding VRD and gas shielded welding method switching button are used for the selection of three kinds of welding methods, and have corresponding Indicator lamp indicates its state；Overtemperature protection status indicator lamp（Yellow）Then whether instruction superheat state occurs；When being welded to improve Performance, be additionally provided with hot start and two adjusting knobs of Arc.The operation of the utility model welding machine and display, control circuit The circuit theory diagrams of plate are as shown in figure 3, U10 chips（UC3846）A PWM drive signal is constituted with the component around it Generation, regulation with output circuit, U8 chips（Single-chip microcomputer）It is anti-to be then responsible for other functions such as Voltage Feedback, electric current inside machine The control of feedback, hot start, Arc, temperature-sensitive protection etc..In fig. 3, the control of 11 pin of U10 chips and the output of 14 pin is believed Number it is the PWM square-wave pulse signals that two groups of phases differ 180 °, its frequency is tens fixed Hz.Two prescription wave pulse signals exist It is poor necessarily to have a regular time in a cycle, and we term it dead time, and it is to ensure two groups of IGBT alternating works The important parameter of work, the time are determined by the parameter designing of the peripheral components of U10 chips.It should be noted that U10 The pwm pulse bandwidth modulation signals of chip output be determine welding machine inverter main circuit output voltage and size of current it is crucial because Element, its pulse width are determined jointly by the welding current Setting signal on operation display control panel and output current feedback signal Fixed, the object of control is the size of output current.Operator regulates the potentiometer of welding current on front panel, and is welded When, control circuit detects output current signal by the current transformer on mainboard PCB.On the one hand, welding current table is obtained The output current signal of display, in other control circuits（Display control circuit mainly shown in accompanying drawing 3）In the presence of realize Numerical monitor of the electric current on front panel charactron.On the other hand, effect of the current signal detected in other control circuits Under, handled by signal amplification etc., as current feedback control signal compared with welding current Setting signal, after comparing Difference signal control welding machine output PWM chip pulse width or dutycycle, determine welding machine output current voltage size, Realize being precisely controlled for output current parameter.The pulse width of the pwm signal is inputted Setting signal by " 5 " number point in accompanying drawing 3 Control, pwm signal output is whether there is, be then decided by the signal control of No. 16 pin of U10 chips, the control carried out according to this pin has Under-voltage protection, overtemperature protection etc., control mode are U10 chips is stopped, and no longer produce PWM ripples so that machine stops defeated Go out electric current, be exemplified below:That COM2 inserts shell J2 connections in accompanying drawing 3 is temperature-sensitive signal OT1, that is, is connected to thermistor, and temperature-sensitive Resistance is close in IGBT spreader surfaces again, and when radiator overheats, temperature-sensitive action, OT1 signals are pulled to low level （GND）, this low level signal is sent to single-chip microcomputer U8 No. 15 pin, and single-chip microcomputer makes corresponding response, on the one hand, passes through No. 16 pin that No. 2 pin are signaled to U10 make it be stopped, and prevent machine from being burnt because of overheat, on the other hand send signal To display circuit, light panel overheating indicator lamp LED1.In the presence of machine internal cooling fan and air channel, work as radiator After temperature dropped to a certain extent, the superheating phenomenon inside welding machine eliminates, and thermistor recovers, and control circuit can just continue to output Pwm control signal, while overheating indicator lamp extinguishes, and is so achieved that the overtemperature protection of welding machine.
Relay switch boards circuit board is the key of the utility model welding machine, and the circuit design on this block plank has its original Part, with the Width funtion input for closing the i.e. achievable welding machine of special main transformer.Physical circuit is as shown in figure 5, circuit is main Be made up of two large divisions, one is by relay J5, switch, triode Q1, optocoupler U1 and resistance, electric capacity, regulator tube group into Transformer switching circuit, the major function of this partial circuit is can be according to input voltage come adjust automatically transformer data The number of turn.COM2 insert shell J2 be directly in the sampled signal at the positive and negative both ends of output of rectifier bridge, it is laggard by a voltage-stabiliser tube Z1 Enter optocoupler primary U1A, voltage-stabiliser tube is crucial in this section of circuit, when the sampled signal of input is higher than the breakdown voltage of voltage-stabiliser tube, then U1A is turned on, and optocoupler is started working, and is passed the signal along to the other end, is pulled low triode Q1 B pin, triode cut-off, is compared VCC signal is input to FET T1 G pin by device U3C, makes its start-up operation, and D pin signals are pulled low, relay adhesive, opened Close 34 to connect, 35 disconnect, and complete conversion of the primary from T-A to T-B.Such operation principle enables the machine to adapt to not Same input voltage, it is only necessary to do other components of machine according to the specification of maximum input voltage, then according to difference Input voltage switch the different primary number of turn, you can realize the Width funtion input of welding machine.Second it is by comparator The voltage detecting circuit that U3A, U3B, U3D and resistance, diode are formed, the function of this partial circuit is detection input voltage Size and feed back to accompanying drawing 3 operation with display control board on single-chip microcomputer U8, U8 can be adjusted automatically according to the size of input voltage Whole specified maximum output current is with the welding effect for being optimal.
As shown in figure 4, TR1 driving transformers, Q10 to Q13 four triodes, voltage-stabiliser tubes（Such as Z22 to Z25）, resistance, electricity The driving circuit section of T1 ~ T2 and the road IGBT pipes of T3 ~ T4 tetra- in the composition inverter circuit such as appearance, the major function of this partial circuit It is the pwm pulse signal that amplification inputs from COM6 4 pin and 5 pin.11 pin of UC3846 chips and the pwm signal of 14 pin output drive Dynamic power is small, therefore needs to carry out power amplification by one group of drive control circuit, then by TR1 driving transformers go to control T1 ~ T2 and the road IGBT pipes of T3 ~ T4 tetra- on-off working condition.Drive circuit output end G1, G2, G3 and G4 are respectively two groups of processes The pwm pulse signal of amplification, go to control the switching state of two groups of IGBT pipes of T1 ~ T2 and T3 ~ T4 in inverter main circuit respectively.
As shown in Figure 6 be the utility model welding machine switching power supply parts circuit theory diagrams, by Switching Power Supply transformation Device T1, U13 chip（UC3842）, metal-oxide-semiconductor T4 and its surrounding component form.UC3842 chips are also that a pwm pulse is wide Adjuster is spent, is equivalent to the UC3846 chips of a simple version, its peripheral resistance, electric capacity can set its running parameter, U13 6 pin of chip can also send pwm pulse signal, and the metal-oxide-semiconductor T4 in accompanying drawing 5 can be made to be in break-make working condition, in switch electricity Source transformer T1 output circuit part obtains+15V, -15V and+24V supply voltage respectively, supplies other devices and circuit Work.In addition, from the circuit machine schematic diagram of switching power supply parts, the utility model welder switch power unit circuit power taking The DC+ and DC- of main circuit are come from, the volume of switching mode power supply transformer, dimension and weight control transformation much smaller than in general Device, this reduces the cost of welding machine, improve the technical value added of welding machine.

Claims (7)

1. a kind of IGBT single-tube contravariant manual welding machines of Width funtion input, including：Cabinet, mainboard, main transformer, air switch, It is characterized in that：Cabinet（10）Four base angles of outer side-lower position of bottom plate is fixed with foot pad（11）, cabinet（10）Rear board Inner side is provided with blower housing（8）, blower housing（8）Top be provided with air switch（7）, blower housing（8）Inside it is arranged with blower fan （9）, air switch（7）Rear be provided with power line fixing terminal（2）, power line fixing terminal（2）Rear opened provided with air Close geometrical clamp（3）, cabinet（10）The outside of rear board is provided with fan air inlet（6）, fan air inlet（6）Top be provided with power supply Wiring lattice（5）, cabinet（10）The inner side of biside plate is provided with mainboard（19）, control panel（22）, mainboard（19）Side be provided with power supply Plate mounting box（13）With main transformer（12）, power panel mounting box（13）Top be provided with relay switch boards（16）, power panel Mounting box（13）Side be provided with power panel（21）, power panel mounting box（13）Front be provided with display circuit board（20）, display Circuit board（20）It is embedded in cabinet（10）In front panel, cabinet（10）Front panel corresponds to display circuit board（20）Position be provided with it is aobvious Show operator control panel（18）, show operator control panel（18）It is provided with operation knob（17）, show operator control panel（18）To be provided with output fast for lower section Quick access head assembly（15）.
A kind of 2. IGBT single-tube contravariant manual welding machines of Width funtion input according to claim 1, it is characterised in that：It is described Cabinet（10）Top is provided with handle（1）.
3. a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input, including：Main circuit, control panel circuit, mainboard Circuit, relay switch boards circuit and Switching Power Supply plate circuit, it is characterised in that：Main circuit is as follows：The A ports of mainboard and IGBT Pipe T1 G ports are connected, and IGBT pipes T1 C-terminal mouth is divided into six tunnels, respectively the DC+ ports with power panel, electric capacity C1 one end, two Pole pipe D3 one end, diode D2 one end, diode D1 one end, IGBT pipes T2 C-terminal mouth are connected, and diode D1's is another End is divided into two-way, and one end with input power, diode D4 is connected respectively, the diode D2 other end and diode D5 one end It is connected, the diode D3 other end is divided into two-way, and one end with power port, diode D6 is connected respectively, IGBT pipes T1 E ends Mouth is divided into two-way, and the C-terminal mouth with IGBT pipes T3, No. 3 ports of relay switch boards are connected respectively, IGBT pipes T3 G ends and master The C-terminal mouth of plate is connected, and IGBT pipes T3 E ports are divided into six tunnels, respectively the DC- ports with power panel, the electric capacity C1 other end, two The pole pipe D6 other end, the diode D5 other end, the diode D4 other end, IGBT pipes T4 E ports are connected, IGBT pipes T4 C-terminal mouth be divided into two-way, the E ports with IGBT pipes T2, transformer device T6 No. 2 ports are connected respectively, IGBT pipes T4 G ports Be connected with the D ports of mainboard, IGBT pipes T2 G ports are connected with the B ports of mainboard, 4, No. 5 ports of relay switch boards with Main transformer T5 No. 1 port is connected, and main transformer T5 No. 2 ports are connected with transformer T6 No. 1 port, main transformer T5 No. 6 ports be connected with diode D8 one end, the diode D8 other end is divided into two-way, respectively one end with diode D7, OUT+ ports are connected, and main transformer T5 No. 7 ports are connected with OUT- ports, main transformer T5 No. 8 ports and diode D7 The other end be connected, transformer T6 3, No. 4 ports are connected with control panel, and the driving port of mainboard is also connected with control panel, electricity Source plate is also connected with control panel, and actual current circuit, hot start circuit, Arc electricity are connected to below control panel Road.
4. a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input according to claim 3, its feature exist In：The control panel circuit is as follows：Control board chip U8 No. 1 port is connected with No. 6 ports of relay switch boards J1 ports, Control board chip U8 No. 2 ports are connected with diode D11 one end, the diode D11 other end and resistance R26 one end phase Even, the resistance R26 other end is connected with chip U10 SHDN ports, and control board chip U8 No. 3 ports are connected with+5V power supplys, Control board chip U8 No. 4 ports are connected with C MCU ports, and control board chip U8 No. 5 ports are with control board chip U20's CLK ports are connected, and control board chip U8 No. 6 ports are connected with making sheet chip U20 DATA ports, and the 7 of control board chip U8 With controlling board chip U20 LOAD ports to be connected, making sheet chip U8 No. 10 ports are connected with resistance R145 one end for number port, The resistance R145 other end is connected with swept resistance VR1 one end, swept resistance VR1 other end ground connection, swept resistance VR1's Sliding end is connected with resistance R27 one end, and the resistance R27 other end is divided into two-way, respectively one end with resistance R25, amplifier U11A pairs of No. 3 ports are connected, and the resistance R25 other end is connected with swept resistance VR2 sliding end, and the two of swept resistance VR2 End is connected with making sheet chip U8 No. 3 ports, and amplifier U11A No. 2 ports are divided into two-way, respectively with the one of resistance R138 End, resistance R137 one end be connected, the resistance R138 other end is connected with resistance R162 one end, the resistance R162 other end and Diode D29 one end is connected, and for the diode D29 other end with controlling board chip U10 CT ports to be connected, resistance R137's is another One end is connected with electric capacity C66 one end, and the electric capacity C66 other end is divided into two-way, respectively with amplifier U11A No. 1 port, electricity Resistance R56 one end is connected, and the resistance R56 other end is divided into two-way, and one end with resistance R61 controls board chip U10 ERA respectively + port is connected, and the resistance R61 other end is connected with triode Q10 colelctor electrode, triode Q10 grounded emitter, triode Q10 base stage is connected with diode Z32 one end, and the diode Z32 other end is connected with resistance R143 one end, resistance R143 The other end be connected with switching power source chip U4 VFB ports, control board chip U10 SHDN ports are divided into three tunnels, respectively with Resistance R59 one end, resistance R62 one end, electric capacity C45 one end are connected, resistance the R62 other end and control board chip U10 CT ports be connected, the resistance R59 other end is divided into two-way, and the other end with electric capacity C45, ground are connected respectively, control plate core Piece U10 COMP ports are connected with the ERA- ports of Switching Power Supply plate circuit, control board chip U10, control board chip U10's GUN ports are grounded, and control board chip U10 VC ports, VIN ports are connected with control board chip U8 No. 3 ports, control panel Chip U10 CS/SS ports are divided into three tunnels, respectively one end with resistance R51, resistance R52 one end, electric capacity C4 one end phase Even, for the resistance R51 other end with controlling board chip U10 VREF ports to be connected, the resistance R52 other end is divided into two-way, respectively The other end, ground with electric capacity C4 are connected, control board chip U10 AOUT ports and the PWM-A ports phase of relay switch boards Even, control board chip U10 BOUT ports are connected with the PWM-B ports of relay switch boards, control board chip U10 CT ports It is divided into two-way, one end with electric capacity C25, triode Q1 base stage are connected respectively, electric capacity C25 other end ground connection, triode Q1 Colelctor electrode with control board chip U10 VREF ports be connected, triode Q1 emitter stage is divided into two-way, respectively with control plate core Piece U10 CS+ ports, resistance R55 one end is connected, and the resistance R55 other end is connected with resistance R163 one end, resistance R153 The other end with controlling board chip U10 CT ports to be connected, control board chip U10 CS- ports ground connection, control board chip U10 RT ports be connected with resistance R57 one end, resistance R57 other end ground connection；Control board chip U8 No. 23 ports and resistance R1 one end is connected, and the resistance R1 other end is connected with+5V power supplys, and control board chip U8 No. 20 ports are divided into two-way, respectively One end, swept resistance VR5 sliding end with electric capacity C77 are connected, electric capacity C77 other end ground connection, swept resistance VR5 one end Be connected with+5V power supplys, swept resistance VR5 other end ground connection, control board chip U8 No. 19 ports are divided into two-way, respectively with electricity Hold C76 one end, swept resistance VR4 sliding end is connected, electric capacity C76 other end ground connection, swept resistance VR4 one end with+ 5V power supplys are connected, and swept resistance VR4 other end ground connection, control board chip U8 No. 18 ports are divided into two-way, respectively with electric capacity C75 one end, swept resistance VR3 sliding end are connected, electric capacity C75 other end ground connection, swept resistance VR3 one end and+5V Power supply is connected, and swept resistance VR3 other end ground connection, control board chip U20 No. 6 ports are connected with+5V power supplys ,+5V power supplys Also it is in series with resistance R16, LED5, controls the one end of board chip U20 7,8,9, No. 10 ports respectively with LED1 ~ LED4 to go here and there Connection, LED1 ~ LED4 harness-integrated No. 20 ports with controlling board chip U20 of the other end are connected, No. 7 of control board chip U20 Port controls board chip U20 No. 8 ports with controlling No. 7 of board chip U23 with controlling board chip U23 No. 11 ports to be connected Port is connected, and control board chip U20 No. 9 ports are with controlling board chip U23 No. 4 ports to be connected, and the 10 of control board chip U20 Number port is with controlling board chip U23 No. 2 ports to be connected, control board chip U20 No. 11 ports and the 1 of control board chip U23 Number port is connected, and control board chip U20 No. 12 ports are connected with control board chip U23 No. 10 ports, control board chip U20 No. 13 ports with controlling board chip U23 No. 5 ports to be connected, control board chip U20 No. 14 ports and control board chip U23 No. 3 ports be connected.
5. a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input according to claim 3, its feature exist In：The motherboard circuit is as follows：No. 1 port of mainboard J17 ports is connected with DC+, No. 2 ports and the DC- phases of mainboard J17 ports Connect, the tunnels of DC+ Fen Wei nine, respectively the current collection end with IGBT pipes T2, IGBT pipes T3 current collection end, electric capacity C14 one end, resistance R43 One end, electric capacity C17 one end, resistance R37 one end, electric capacity C12 one end, No. 4 ports of J1 ports, thermistor RT1 One end be connected, the thermistor RT1 other end is divided into two-way, is connected respectively with J1 No. 3 ports, DC+IN ports, the 1 of J1 Number port is divided into two-way, and the colelctor electrode with triode Q9, diode D21 one end are connected respectively, the diode D21 other end point For two-way, one end with 24V power supplys, resistance R2 is connected respectively, and triode Q9 emitter stage is divided into two-way, respectively with signal ground, Electric capacity C48 one end is connected, the electric capacity C48 other end is divided into two-way, and the other end with resistance R2, diode Z20 have respectively Single-phase company, the diode Z20 other end are connected with resistance R1 one end, the resistance R1 other end and triode Q9 base stage phase Even, J2 number port is connected with 21V power supplys, and the transmitting terminal of the IGBT pipes T2 is divided into three tunnels, is managed respectively with BOUT ports, IGBT T1 current collection end, inversion electrical equipment T8 No. 2 ports are connected, and No. 1 port of inversion electrical equipment is connected with OUTB ports, inversion electrical equipment 3rd, No. 4 ports are connected with J17 1, No. 2 port, and IGBT pipes T2 base terminal is connected with G2 ports, IGBT pipes T1 transmitting terminal point For eight tunnels, respectively with DC- ports, IGBT pipes T4 transmitting terminal, electric capacity C15 one end, resistance R38 one end, electric capacity C17 it is another One end, the resistance R42 other end, the electric capacity C13 other end, DC-IN ports, IGBT pipes T1 base terminal are connected with G4 ports, IGBT pipes T3 transmitting terminal is divided into two-way, and the current collection end with IGBT pipes T4, OUTA ports are connected respectively, IGBT pipes T3 base terminal It is connected with G1, the base stage at IGBT ends is connected with right G3；Mainboard J4 No. 1 port is connected with 24V power supplys, mainboard J4 No. 2 ports It is connected with signal ground；With controlling board chip U8 No. 3 ports to be connected, mainboard J16 No. 2 ports connect for mainboard J16 1, No. 3 port Ground；Mainboard J15 1, No. 3 port is with controlling board chip U8 No. 3 ports to be connected, mainboard J15 No. 2 ports ground connection, mainboard J15 No. 4 ports be divided into two-way, one end with diode Z22, diode Z23 one end are connected respectively, the diode Z22 other end Be connected with triode Q10 base stage, triode Q10 emitter stage is divided into two-way, respectively with control board chip U8 No. 3 ports, Triode Q11 emitter stage is connected, and triode Q10 colelctor electrode is connected with resistance R69 one end, the resistance R69 other end point For two-way, the colelctor electrode with triode Q12, transformer TR1 No. 1 port are connected respectively, the diode Z23 other end and three poles Pipe Q12 base stage is connected, triode Q12 grounded emitter, and triode Q11 colelctor electrode is connected with resistance R74 one end, electricity The resistance R74 other end is divided into colelctor electrode of the two-way respectively with triode Q13, transformer TR1 No. 2 ports are connected, triode Q11 Base stage be connected with diode Z24 one end, the diode Z24 other end be divided into No. 5 ports of the two-way respectively with mainboard J15, Diode Z25 one end is connected, and the diode Z25 other end is connected with triode Q13 base stage, triode Q13 emitter stage Ground connection, transformer TR1 No. 3 ports are divided into three tunnels, respectively the colelctor electrode with triode Q4, resistance R19 one end, diode Z10 one end is connected, and the diode Z10 other end is divided into two-way, respectively the other end with resistance R19, diode Z9 one end Be connected, the diode Z9 other end is connected with resistance R15 one end, and the resistance R15 other end is divided into two-way, respectively with electric capacity C20 one end, diode Z8 one end is connected, and the diode Z8 other end is divided into three tunnels, respectively the other end with electric capacity C20, Triode Q4 emitter stage, diode D1 one end are connected, and the diode D1 other end is divided into three tunnels, respectively with diode D2's One end, resistance R14 one end, transformer TR1 No. 4 ports are connected, and the diode D2 other end is divided into two-way, respectively with three poles Pipe Q4 base stage, the resistance R14 other end are connected；Transformer TR1 No. 5 ports are divided into three tunnels, respectively with the one of diode D8 End, diode D10 one end, resistance R23 one end are connected, and the diode D8 other end is divided into three tunnels, respectively with triode Q6 Emitter stage, diode Z14 one end, electric capacity C22 one end be connected, the diode D10 other end is divided into two-way, respectively with electricity The resistance R23 other end, triode Q6 base stage are connected, and the diode Z14 other end is divided into two-way, another with electric capacity C22 respectively One end, resistance R24 one end are connected, and the resistance R24 other end is connected with diode Z15 one end, the diode Z15 other end It is divided into two-way, one end with resistance R25, diode Z16 one end are connected respectively, and the diode Z16 other end is divided into three tunnels, point The colelctor electrode of the other end, triode Q6 not with resistance R25, transformer TR1 No. 6 ports are connected；Transformer TR1 No. 7 ends Mouth is divided into three tunnels, and the colelctor electrode with triode Q5, resistance R22 one end, diode Z13 one end are connected respectively, diode Z13 The other end be divided into two-way, the other end with resistance R22, diode Z12 one end are connected respectively, the diode Z12 other end It is connected with resistance R21 one end, the resistance R21 other end is divided into two-way, respectively one end with electric capacity C21, the one of diode Z11 End is connected, and the diode Z11 other end is divided into three tunnels, respectively the other end with electric capacity C21, triode Q5 emitter stage, two poles Pipe D3 one end is connected, and the diode D3 other end is divided into three tunnels, respectively one end with diode D4, resistance R20 one end, change Depressor TR1 No. 8 ports are connected, the diode D4 other end is divided into two-way, respectively the base stage with triode Q5, resistance R20 The other end is connected；Transformer TR1 No. 9 ports are divided into three tunnels, respectively one end with diode D12, diode D13 one end, Resistance R28 one end is connected, and the diode D12 other end is divided into three tunnels, respectively the emitter stage with triode Q7, diode Z17 One end, electric capacity C23 one end be connected, the diode D13 other end is divided into two-way, respectively the other end with resistance R26, three poles Pipe Q7 base stage is connected, and the diode Z17 other end is divided into two-way, respectively the other end with electric capacity C23, resistance R27 one end Be connected, the resistance R27 other end is connected with diode Z18 one end, and the diode Z18 other end is divided into two-way, respectively with electricity Resistance R28 one end, diode Z19 one end is connected, and the diode Z19 other end is divided into three tunnels, another with resistance R28 respectively End, triode Q7 colelctor electrode, transformer TR1 No. 10 ports are connected.
6. a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input according to claim 3, its feature exist In：The relay switch boards circuit is as follows：No. 1 port of the mainboard J2 is connected with diode D2 one end, diode D2 The other end be connected with diode Z3 one end, the diode Z3 other end is connected with diode Z1 one end, diode Z1's The other end is connected with resistance R2 one end, and the resistance R2 other end is divided into two-way, respectively one end with resistance R3, photoelectrical coupler U1 No. 1 port is connected, and No. 2 ports of the mainboard J2 are divided into two-way, respectively the other end with resistance R3, photoelectrical coupler U1 No. 2 ports be connected, photoelectrical coupler U1 No. 3 ports are divided into four tunnels, respectively the colelctor electrode with triode Q1, resistance R15 One end, ground, electric capacity C1 one end are connected, and photoelectrical coupler U1 No. 4 ports are divided into two-way, respectively one end with resistance R13, Triode Q1 base stage is connected, and the resistance R13 other end, is divided into three tunnels, respectively one end with resistance R1, the one of diode D1 End, J5 No. 1 port of relay switch boards are connected, and the emitter stage of the triode Q1 is divided into four tunnels, respectively with resistance R1's The other end, the resistance R15 other end, the electric capacity C1 other end, amplifier U3C No. 10 ports are connected, No. 9 of amplifier U3C Port is connected with 5V power supplys, and amplifier U3C No. 8 ports are connected with FET T7 gate pole, FET T1 drain electrode It is divided into four tunnels, respectively the other end with diode D1, J5 No. 2 ports of relay switch boards, resistance R13 one end, electric capacity C6 one end is connected, and the J5 of relay switch boards No. 3 ports are connected with the J6 ports of mainboard, and the 4 of the J5 of relay switch boards Number port is connected with T-B ports, and the J5 of relay switch boards No. 4 ports are connected with T-A ports, FET T1 source electrode point For two-way, one end with ground, resistance R8 is connected respectively, and the electric capacity C6 other end is divided into six tunnels, respectively with the one of resistance R10 End, the resistance R8 other end, electric capacity C8 one end, diode Z2 one end, amplifier U3A No. 3 ports, the 4 of amplifier U3B Number port is connected, and for the resistance R10 other end with controlling board chip U8 No. 3 ports to be connected, the electric capacity C8 other end is divided into two-way, The other end with ground, diode Z2 is connected respectively, and amplifier U3A No. 2 ports are connected with 10V power supplys, and the 1 of amplifier U3A Number port is connected with diode D4 one end, and the diode D4 other end is divided into two-way, respectively with No. 3 ends of mainboard J4 ports Mouth, diode D5 one end are connected, and the diode D5 other end is connected with amplifier U3C No. 7 ports, No. 5 of amplifier U3C Port is connected with 5V power supplys, the other end of the resistance R13 is divided into two-way, respectively one end with resistance R14, amplifier U3D No. 13 ports are connected, and resistance R14 other end ground connection, amplifier U3D No. 12 ports are connected with 5V power supplys, amplifier U3D's No. 14 ports are connected with diode D6 one end, and the diode D6 other end is connected with No. 4 ports of mainboard J4 ports, described 10V power supplys are also divided into two-way, and one end with resistance R11, resistance R9 one end are connected respectively, the resistance R11 other end and control Board chip U8 No. 3 ports are connected, and the resistance R9 other end is divided into two-way, and one end with 5V power supplys, resistance R12 is connected respectively, Resistance R12 other end ground connection.
7. a kind of circuit of the IGBT single-tube contravariant manual welding machines of Width funtion input according to claim 3, its feature exist In：The Switching Power Supply plate circuit is as follows：Switching Power Supply board chip U4 VFB ports are divided into five tunnels, respectively with photoelectrical coupler U9B No. 3 ports, electric capacity C15 one end, electric capacity C13 one end, resistance R9 one end, resistance R5 one end is connected, photoelectricity coupling Clutch U9B No. 4 ports are connected with Switching Power Supply board chip U4 VCC ports, and the electric capacity C13 other end is divided into two-way, respectively The other end, Switching Power Supply board chip U4 COMP ports with resistance R5 are connected, and the resistance R9 other end is another with electric capacity C15's End is connected, and Switching Power Supply board chip U4 RT/CT ports are connected with resistance R6 one end, resistance the R6 other end and Switching Power Supply Board chip U4 VREF ports are connected, and Switching Power Supply board chip U4 ISNS ports are connected with resistance R11 one end, resistance R11 The other end be connected with CFB ports, one end also with resistance R19 of CFB ports, resistance R15 one end, FET T9 source electrode Be connected, the resistance R19 other end is divided into three tunnels, respectively with short slab R18 one end, electric capacity C21 one end, IGCT Q2 G Port is connected, and the resistance R18 other end is divided into two-way, and the other end with electric capacity C21, signal ground are connected respectively, IGCT Q2 A Port is connected with Switching Power Supply board chip U4 VCC ports, and IGCT Q2 K ports are connected with signal ground；Resistance R15's is another End is connected with signal ground, and FET T4 gate pole is connected with resistance R16 one end, resistance the R16 other end and Switching Power Supply Board chip U4 OUT terminal mouth is connected, and FET T9 drain electrode is divided into two-way, respectively one end with diode D28, transformer TR2 No. 8 ports are connected, and the diode D28 other end is divided into two-way, respectively one end with resistance R7, electric capacity C12 one end phase Even, the resistance R7 other end is divided into three tunnels, respectively the other end with electric capacity C12, Switching Power Supply board chip U5 VIN ports, change Depressor T1 No. 10 ports are connected, and transformer T1 No. 12 ports are connected with diode D5 one end, the diode D5 other end It is connected with resistance R12 one end, the resistance R12 other end is connected with Switching Power Supply board chip U4 VCC ports, transformer T1's No. 14 ports are connected with signal ground, and transformer T1 No. 1 port is connected with diode D29 one end, the diode D29 other end It is divided into three tunnels, one end with electric capacity C43, resistance R45 one end, diode Z16 one end are connected respectively, and diode Z16's is another One end is divided into two-way, and one end with resistance R47, resistance R46 one end are connected respectively, resistance the R46 other end and photoelectric coupling Device U9A No. 1 port is connected, and photoelectrical coupler U9A No. 2 ports are divided into Shi Erlu, respectively with ground, electric capacity C40 one end, The resistance R47 other end, electric capacity C41 one end, electric capacity C36 one end, resistance R66 one end, electric capacity C35 one end, resistance The R45 other end, Switching Power Supply board chip U5 GND ports, electric capacity C30 one end, the electric capacity C43 other end, transformer TR2 No. 2 ports be connected, the electric capacity C40 other end is connected with the electric capacity C41 other end, and the electric capacity C36 other end is divided into three tunnels, point The other end of the other end, electric capacity C35 not with resistance R66, Switching Power Supply board chip U5 VOUT ports are connected, electric capacity C30's The other end is divided into two-way, and the VIN ports with Switching Power Supply board chip U5, diode D22 one end are connected respectively, diode D22 The other end be connected with transformer TR2 No. 3 ports, transformer T1 No. 6 ports are divided into 5 tunnels, respectively with the one of electric capacity C27 End, electric capacity C28 one end, ground, resistance R65 one end, No. 2 ports of blower fan are connected, and No. 1 port of blower fan is divided into four tunnels, The other end with resistance R65, the electric capacity C28 other end, the electric capacity C27 other end, diode D3 one end are connected respectively, two poles The pipe D3 other end is connected with transformer T1 No. 7 ports；The VCC ports of the Switching Power Supply board chip U4 also with resistance R41 one end is connected, and the resistance R41 other end is divided into three tunnels, respectively the VIN ports with Switching Power Supply board chip U8, resistance R44 One end, electric capacity C20 one end be connected, the electric capacity C20 other end is divided into two-way, respectively with signal ground, relay switch boards No. 2 ports of J1 ports are connected, and the resistance R44 other end is connected with diode D23 one end, the diode D23 other end with No. 1 port of the J1 ports of relay switch boards is connected.
CN201720642149.9U 2017-06-05 2017-06-05 A kind of the IGBT single-tube contravariants manual welding machine and its circuit of Width funtion input Active CN206811282U (en)

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