CN207139072U - A kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine and its circuit - Google Patents
A kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine and its circuit Download PDFInfo
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- CN207139072U CN207139072U CN201720641546.4U CN201720641546U CN207139072U CN 207139072 U CN207139072 U CN 207139072U CN 201720641546 U CN201720641546 U CN 201720641546U CN 207139072 U CN207139072 U CN 207139072U
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Abstract
It the utility model is related to the manufacturing technology field of inverter type welder, concretely it is a kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine and its circuit, solves the problems, such as anti-dust performance using tube leg sheathing and UV paint two ways, some adsorbing powder dusts containing conductive metal can so be avoided to IGBT pins and circuit board, compared with pouring into a mould PGL mode, cost is low, easy to maintenance；The size of the size of wire harness and welding machine internal component is reduced by pasted sheet type thermistor transmission temperature protection signal and main circuit, switching power circuit and output rectification circuit synthesis, makes welding machine smaller, weight is lighter, and cost is lower；By configuring Wind Volume, High-speed DC cooling blower, utilize the good air channel formed between main circuit board, IGBT radiators and fast recovery diode radiator, to improve the cooling effectiveness for the main power critical parts that generate heat, the cyclic duration factor of welding machine is improved, solves the problems, such as that weld interval is short.
Description
Technical field
The manufacturing technology field of inverter type welder is the utility model is related to, is concretely that a kind of inexpensive IGBT single tubes are single-ended
Excited inversion manual welding machine and its circuit.
Background technology
At present, the application of IGBT pipes contravariant hand arc welding machine is wider, in the market share shared by civil area
It is larger.For different circuit designs, control principle is different, and the complexity of circuit board connection is different, the reliability of its product,
Production process and manufacture craft etc. also can be entirely different.Design and bad often produce problems with：1 anti-net voltage fluctuation ability
Difference.2 cyclic duration factors are low, and some welding machines can only achieve 10~25%.3 anti-dust performances are bad, cause welding machine functional reliability to drop
It is low.4 arcing performances are bad, easy current interruption.
The IGBT single tubes single-end ortho-exciting inversion manual welding machine and its electricity of a kind of low-cost and high-performance high reliability are designed for this
Road is highly important.
The content of the invention
The utility model breaches the problem of prior art, and it is mono- to devise a kind of IGBT of low-cost and high-performance high reliability
Pipe single-end ortho-exciting inversion manual welding machine and its circuit.
In order to achieve the above object, the utility model devises a kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding
Machine, including：Cabinet, fast recovery diode, MUR radiators, blower fan, IGBT radiators, single tube IGBT module, it is characterised in that：
The center of cabinet inner bottom surface is fixed with fast recovery diode one, and the side of fast recovery diode one is provided with support column, on support column
Inductance is fixed with, the top of fast recovery diode one is provided with MUR radiators, and the front of MUR radiators is provided with control panel, and MUR dissipates
The top of hot device is provided with IGBT radiators, and the top of IGBT radiators is provided with single tube IGBT module, fast recovery diode two, rectification
Bridge, the top of single tube IGBT module are provided with three hole collets, and the top of fast recovery diode two is provided with holes collets, after cabinet
Panel is provided with blower fan and electric power connection line, and being provided with ship type above blower fan switchs, and the panel itself of cabinet side is fixed with insulation
Plate, mainboard is fixed with insulation board, both positive and negative polarity out splice going splice and joint holder assembly, both positive and negative polarity output are fixed with case front panel
The top of joint and joint holder assembly is provided with bakelite knob.
The utility model have also been devised a kind of control circuit of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine, bag
Include：Main control circuit, motherboard circuit, control panel circuit, it is characterised in that：The main control circuit is as follows：The 1 of rectifier bridge BR1
Number, No. 3 connectivity ports be connected with power switch K1 one end, the power switch K1 other end is connected with 220V power supplys, rectifier bridge
No. 2 of BR1, No. 4 ports be connected respectively with B, A port of mainboard, the J1-5 ports of mainboard are connected with the OT ports of control panel, main
The J1-4 ports of plate are connected with the CT ports of control panel, and the J1-3 ports of mainboard are connected with the DRV ports of control panel, mainboard
J1-1 ports are connected with one end of 14V power supplys, and the other end of 14V power supplys is connected with the V1 ports of control panel, the J2-1 ends of mainboard
Mouth is connected with the positive pole of cooler, and the J2-2 ports of mainboard are connected with the negative pole of cooler, and the J1-2 ports of mainboard are divided into three tunnels
The GND ports with ground, the anode connector of both positive and negative polarity out splice going splice and joint holder assembly, control panel are connected respectively, the J1- of mainboard
6 ports are divided into two-way, and one end with inductance, the VOUT ports of control panel are connected respectively, and the other end and the both positive and negative polarity of inductance export
The positive terminal of joint and joint holder assembly is connected.
The motherboard circuit is as follows：The J29 of mainboard No. 1 port is connected with DC+, and J29 No. 2 ports are divided into six tunnels, point
One end, resistance R63 one end, resistance R62 one end not with electric capacity C17, resistance R61 one end, electric capacity C35 one end, line
Circle B3 No. 1 port is connected, and the electric capacity C17 other end is connected with pad TS- No. 2 ports, pad TS- No. 1 port and DC-
It is connected, the resistance R63 other end is divided into four tunnels, respectively the other end with resistance R62, the resistance R61 other end, electric capacity C35
The other end, diode D16 one end are connected, the other end of diode No. 2 ports with coil B3 respectively, chip U16 DRAIN
Port is connected, and chip U16 SOURCE ports are divided into No. 2 ports, the electric capacity C21 one end of two-way respectively with pad TS- and are connected,
Chip U16 FB ports are divided into two-way, and the other end with electric capacity C21, the emitting stage of photoelectrical coupler are connected respectively, chip U16
The tunnel of vdd terminal mouth three, respectively one end with diode D36, the colelctor electrode of photoelectrical coupler, electric capacity C36 one end be connected, electric capacity
The C36 other end is divided into two-way, and one end with electric capacity C21, coil B3 No. 3 ports are connected respectively, and diode D36's is another
End is connected with coil B3 No. 4 ports, and the luminous tube positive pole of photoelectrical coupler is connected with resistance R41 one end, photoelectrical coupler
Luminous tube negative pole be divided into two-way, one end with diode ZD8, resistance R42 one end are connected respectively, and diode ZD8's is another
End ground connection, the resistance R42 other end are divided into six tunnels, respectively the other end with resistance R41,14V power supplys, electric capacity C31 one end, electricity
Hold C30 one end, resistance R73 one end, diode D21 one end are connected, the electric capacity C31 tunnel of the other end six, respectively with electric capacity
C34 one end, the electric capacity C30 other end, the resistance R73 other end, resistance R74 one end, coil B3 No. 7 ports and ground
Face is connected, and the diode D21 other end is connected with coil B3 No. 8 ports, and the electric capacity C34 other end is divided into three tunnels, respectively with
12V power supplys, the resistance R74 other end, diode D23 one end are connected, the diode D23 other end and coil B3 No. 6 ends
Mouth is connected；The J2 of the mainboard No. 1 port ground connection, No. 2 ports are connected with 12v power supplys；The PWR of the mainboard No. 1 port
Also it is connected with 14V power supplys, No. 2 port ground connection, No. 3 ports are connected with resistance R64 one end, and No. 4 ports are CT ports, and No. 5 are held
Mouthful it is connected with resistance R72 one end, the resistance R72 other end is grounded, and No. 6 ports are VOUT ports, the resistance R64 other end
It is divided into three tunnels, one end with resistance R68, FET group U15 G1 ports, FET group U15 G2 ports are connected respectively,
The resistance R68 other end is divided into two-way, and the S2 ports with ground, FET group U15 are connected respectively, FET group U15's
S1 ports are divided into three tunnels, and No. 1 port with 14V power supplys, electric capacity C37 one end, driving transformer TR1 is connected respectively, electric capacity C37
Other end ground connection, FET group U15 D1A ports are divided into two-way, respectively the D1B ports with FET group U15, electric capacity
C33 one end is connected, and the electric capacity C33 other end is connected with resistance R67 one end, and FET group U15 D2A ports are divided into three
Road, respectively the D2B ports with FET group U15, the resistance R67 other end, driving transformer TR1 No. 2 ports be connected, drive
Dynamic transformer TR1 No. 5 ports are divided into three tunnels, respectively one end with diode D13, diode D15 one end, resistance R59
One end is connected, and the diode D13 other end is divided into two-way, and the emitter stage with G1 ports, triode Q3 is connected respectively, diode
The D15 other end is divided into two-way, and one end with resistance R60, triode Q3 base stage are connected respectively, the resistance R59 other end with
The resistance R60 other end is connected, and driving transformer TR1 No. 6 ports are divided into two-way, respectively with e1 port, triode Q3 collection
Electrode is connected, and driving transformer TR1 No. 7 ports are divided into three tunnels, respectively one end with resistance R57, diode D14 one end,
Diode D12 one end is connected, and the diode D12 other end is divided into two-way, respectively with G4 ports, triode Q2 emitter stage phase
Even, the diode D14 other end is divided into two-way, and one end with resistance R58, triode Q2 base stage are connected respectively, resistance R57's
The other end is connected with the resistance R58 other end, and driving transformer TR1 No. 8 ports are divided into two-way, respectively with DC- ports, three poles
Pipe Q2 colelctor electrode is connected；The J26 ports of mainboard are connected with rectifier bridge BR1 No. 1 port, the J27 ports of mainboard and rectifier bridge
BR1 No. 3 ports are connected, rectifier bridge BR1 No. 2 ports are divided into six tunnels, respectively one end with resistance R9, diode ZD6
One end, electric capacity C2 one end, electric capacity C4 one end, resistance R4 one end, electric capacity C5 one end are connected, the resistance R9 other end point
For two-way, one end with resistance R5, triode Q4 base stage are connected respectively, the diode ZD6 other end and triode Q4 hair
Emitter-base bandgap grading is connected, and triode Q4 colelctor electrode is connected with piezo-resistance R53 one end, piezo-resistance the R53 other end and photoelectricity coupling
Clutch U9 No. 2 ports are connected, and photoelectrical coupler U9 No. 1 port is divided into two-way, respectively one end with resistance R21, resistance R25
One end be connected, the resistance R25 other end is connected with IGCT Q5 G ports, and rectifier bridge BR1 No. 4 ports are divided into four tunnels,
The other end with resistance R5, the resistance R21 other end, IGCT Q5 A ports, switch S1 one end are connected respectively, IGCT
Q5 K ports are connected with thermistor RT1 one end, and the other end for switching S1 is divided into five tunnels, another with thermistor RT1 respectively
One end, the electric capacity C2 other end, the electric capacity C4 other end, resistance R3 one end, the electric capacity C5 other end are connected, and resistance R3's is another
One end is connected with resistance R6 one end, and the resistance R6 other end is connected with the resistance R4 other end, photoelectrical coupler U9 No. 3 ends
Mouth is divided into three tunnels, and one end with electric capacity C1, triode Q1 emitter stage, 12V power supplys are connected respectively, No. 4 of photoelectrical coupler U9
Port is divided into three tunnels, and one end with resistance R1, the electric capacity C1 other end, diode ZD1 one end are connected respectively, and resistance R1's is another
One end is connected with 14V power supplys, and the diode ZD1 other end is connected with resistance R2 one end, resistance the R2 other end and triode
Q1 base stage is connected, and triode Q1 colelctor electrode is divided into two-way, respectively with diode D1 one end, one end of mainboard J20 ports
It is connected, the other end of mainboard J20 ports is divided into two-way, and the other end with diode D1,14V power supplys are connected respectively；The G1 ends
Mouth is also divided into one end, the resistance R7 one end of two-way respectively with resistance R10 and is connected, and the resistance R10 other end is divided into four tunnels, respectively
The other end, resistance R8 one end, diode ZD3 one end, IGBT pipes T1 base stage with resistance R7 are connected, IGBT pipes T1 collection
Electric port is divided into two-way, and one end with DC+, diode D33 is connected respectively, and IGBT pipes T1 emission port is divided into five tunnels, respectively
No. 1 port, the diode ZD3 other end, the resistance R8 other end, e1 port, diode D35 one end with main transformer T6
Be connected, the diode D35 other end is divided into four tunnels, respectively with DC- ends, diode ZD2 one end, resistance R12 one end, IGBT
Pipe T4 base stage is connected, and the resistance R12 other end is divided into four tunnels, respectively one end with resistance R13, resistance R11 one end, two poles
The pipe ZD2 other end, IGBT pipes T4 transmitting terminal is connected, and the resistance R13 other end is divided into two-way, another with resistance R11 respectively
One end, G4 ports are connected, IGBT pipes T4 current collection end, are divided into the other end of the two-way respectively with diode D33, the 1 of transformer T5
Number port is connected, and transformer T5 No. 2 ports are connected with No. 2 ports of main transformer, transformer T5 No. 3 ports ground connection, becomes
Depressor T5 No. 4 ports are that CT ports are connected, and No. 3 ports of main transformer are divided into two-way, respectively one end with resistance R70, two
Pole pipe group D38 one end is connected, and the resistance R70 other end is connected with electric capacity C38 one end, and the electric capacity C38 other end is divided into five
Road, the respectively other end with diode group D38, diode group D39 one end, diode group D40 one end, the one of electric capacity C39
End, VOUT ports are connected, and the electric capacity C39 other end is connected with resistance R71 one end, and the resistance R71 other end is divided into five tunnels, point
J33 ports, ground, the diode group D40 other end, the diode group D39 other end not with mainboard, the 4 of main transformer T6
Number port is connected.
The control panel circuit is as follows：The OT ports of control panel are divided into three tunnels one end respectively with resistance R3, electric capacity C24
One end, amplifier U6C No. 9 ports are connected, and electric capacity C24 other end ground connection, the resistance R3 other end is divided into two-way, respectively with
Resistance R11 one end, chip U5 VREF ports are connected, and the resistance R11 other end is divided into three tunnels, respectively with the one of resistance R10
End, amplifier U6C No. 10 ports, resistance R13 one end are connected, resistance R13 other end ground connection, the resistance R10 other end
It is divided into two-way, No. 8 ports with amplifier U6C, voltage-regulator diode D1 one end are connected respectively, the voltage-regulator diode D1 other end
Be connected with resistance R9 one end, the resistance R9 other end is divided into three tunnels, respectively one end with resistance R24, resistance R16 one end,
Triode Q3 base stage is connected, and resistance R24 other end ground connection, the resistance R16 other end is divided into three tunnels, respectively with resistance R17
One end, resistance R14 one end, electric capacity C34 one end be connected, electric capacity C34 other end ground connection, the resistance R17 other end with
Diode D15 one end is connected, and the resistance R14 other end is divided into three tunnels, respectively with amplifier U6B No. 7 ports, diodes
The D15 other end, diode D14 one end are connected, and the diode D14 other end is connected with resistance R15 one end, amplifier
U6B No. 5 ports are connected with 2.5V power supplys, and amplifier U6B No. 6 ports are divided into two-way, respectively one end with diode D13,
Resistance R45 one end is connected, and the diode D13 other end is connected with chip U5 VREF ports, resistance the R45 other end and core
Piece U5 VFB ports are connected, and the resistance R15 other end is divided into three tunnels, respectively the colelctor electrode with triode Q3, the one of resistance R27
End, swept resistance VR2 sliding end are connected, triode Q3 grounded emitter, swept resistance VR2 one end and swept resistance
VR3 sliding end is connected, swept resistance VR2 other end ground connection, swept resistance VR3 one end and chip U5 VREF ports phase
Even, swept resistance VR3 other end ground connection, the resistance R27 other end are divided into two-way, respectively one end with resistance R25, amplifier
U6A No. 3 ports are connected, and the resistance R25 other end is connected with chip U5 VCC ports, and amplifier U6A No. 2 ports are divided into
Two-way, respectively one end with electric capacity C18, resistance R20 one end be connected, the resistance R20 other end is divided into three tunnels, respectively with electricity
Resistance R22 one end, electric capacity C30 one end, diode D12 one end are connected, resistance R22 other end ground connection, and the one of electric capacity C30
End ground connection, amplifier U6A No. 1 port are divided into two-way, and the other end with electric capacity C18, diode D10 one end are connected respectively,
The diode D10 other end is divided into two-way, and the COMP ports with chip U5, triode Q5 colelctor electrode are connected respectively, triode
Q5 emitter stage is divided into four tunnels, and one end with resistance R40, ground, electric capacity C33 one end, resistance R39 one end are connected respectively,
The resistance R39 other end is divided into three tunnels, respectively with resistance R38 one end, the electric capacity C33 other end, diode Z3 one end phase
Even, the resistance R38 other end is connected with chip U5 VOUT ports, and the diode Z3 other end is divided into three tunnels, respectively with resistance
The R40 other end, resistance R47 one end, triode Q5 base stage are connected, the resistance R47 other end and the 14 of amplifier U6D
Number port is connected, and amplifier U6D No. 12 ports are divided into two-way, and one end with resistance R44, resistance R43 one end are connected respectively,
The resistance R44 other end is connected with chip U5 VREF ports, resistance R43 other end ground connection, amplifier U6D No. 13 ports
It is divided into two-way, one end with resistance R42, resistance R41 one end are connected respectively, the resistance R42 other end and chip U5 VCC ends
Mouth is connected, and resistance R41 other end ground connection, the VREF ports of the chip U5 are connected with electric capacity C20 one end, electric capacity C20's
The other end is grounded, and chip U5 VFB ports ground connection, chip U5 VCC ports are divided into three tunnels, respectively one end with electric capacity C25, electricity
Resistance R29 one end, No. 1 port of mainboard PWR ports is connected, electric capacity C25 other end ground connection, the resistance R29 other end with it is steady
Pressure diode D2 one end is connected, voltage-regulator diode D2 other end ground connection, chip U5 OUT terminal mouth and the 3 of mainboard PWR ports
Number port is connected, and chip U5 ISENSE ports are divided into three tunnels, respectively one end with resistance R37, resistance R21 one end, resistance
R35 one end is connected, and resistance R37 other end ground connection, the resistance R35 other end is connected with triode Q4 emitter stage, resistance
The R21 tunnel of the other end five, respectively one end with resistance R7, resistance R31 one end, resistance R32 one end, the one of diode D9
End, the diode D12 other end are connected, and the resistance R7 other end is connected with chip U5 VCC ports, the diode D9 other end
It is divided into one end, CT port of the two-way respectively with diode Z2 to be connected, the diode Z2 other end is connected with diode D6 one end,
The diode D6 other end is divided into three tunnels, and the other end with ground, the resistance R31 other end, resistance R32 is connected respectively, chip
U5 RT/CT ports are divided into four tunnels, respectively one end with electric capacity C12, resistance R12 one end, triode Q4 base stage, mainboard
No. 4 ports of PWR ports are connected, electric capacity C12 other end ground connection, the resistance R12 other end and triode Q4 colelctor electrode phase
Even, chip U5 GND ports ground connection, No. 5 ports of mainboard PWR ports are OT ports, and No. 6 ports of mainboard PWR ports are
VOUT ports.
The pin of the single tube IGBT module is all cased with tube leg sheathing.
Painted on the mainboard brushed with UV.
The utility model compared with prior art, is asked using tube leg sheathing and UV paint two ways to solve anti-dust performance
Topic, can so avoid some adsorbing powder dusts containing conductive metal to IGBT pins and circuit board, with pouring into a mould PGL
Mode is compared, and cost is also relatively lower, and maintenance is more convenient；Temperature protection signal and master are transmitted by pasted sheet type thermistor
Circuit, switching power circuit and output rectification circuit are synthesized to reduce the size of the size of wire harness and welding machine internal component, are made
Welding machine is smaller, and weight is lighter, and cost is lower；By configuring Wind Volume, High-speed DC cooling blower, main circuit board, IGBT are utilized
The good air channel formed between radiator and fast recovery diode radiator, to improve the cooling for the main power critical parts that generate heat
Efficiency, the cyclic duration factor of welding machine is improved, solve the problems, such as that weld interval is short.
Surface-mounted device is additionally used in the utility model, also has a small amount of plug-in unit, circuit board is mainly using the life of automation
Production and assembling, reduce the connecting line inside machine, the technique for simplifying assembling, not only reduce product size, also reduce
Production cost and cost of transportation, make controlled current flow good, welding machine size is small, in light weight, and cost is low, more efficient.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is the circuit connection diagram one of mainboard in the utility model.
Fig. 4 is the circuit connection diagram two of mainboard in the utility model.
Fig. 5 is the circuit connection diagram three of mainboard in the utility model.
Fig. 6 is the circuit connection diagram four of mainboard in the utility model.
Fig. 7 is the circuit connection diagram of control panel in the utility model.
Referring to Fig. 1,1 is cabinet, and 2 be three hole collets, and 3 be electric power connection line, and 4 be rectifier bridge, and 5 be IGBT radiators, 6
Switched for ship type, 7 be blower fan, and 8 be MUR radiators, and 9 be fast recovery diode one, and 10 be inductance, and 11 be support column, and 12 be fast
Recovery diode two, 13 be single tube IGBT module, and 14 be front panel, and 15 be that both positive and negative polarity exports snap joint and joint holder assembly,
16 be bakelite knob, and 17 be control panel, and 18 be mainboard, and 19 be insulation board, and 20 be holes collets.
In the circuit of accompanying drawing 2 ~ 7, the rectifier bridge 4 in rectifier bridge BR1 corresponding diagrams 1, the inductance in inductance L1 corresponding diagrams 1
10。
Embodiment
The utility model is described further with reference to accompanying drawing.
Referring to Fig. 1, the utility model devises a kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine, including：
Cabinet, fast recovery diode, MUR radiators, blower fan, IGBT radiators, single tube IGBT module, it is characterised in that：Bottom in cabinet 1
The center in face is fixed with fast recovery diode 1, and the side of fast recovery diode 1 is provided with support column 11, consolidated on support column 11
Surely there is inductance 10, the top of fast recovery diode 1 is provided with MUR radiators 8, and the front of MUR radiators 8 is provided with control panel 17,
The top of MUR radiators 8 is provided with IGBT radiators 5, and the top of IGBT radiators 5 is provided with single tube IGBT module 13, recovers two soon
Pole pipe 2 12, rectifier bridge 4, the top of single tube IGBT module 13 are provided with three hole collets 2, and the top of fast recovery diode 2 12 is set
There are holes collets 20, the rear board of cabinet 1 is provided with blower fan 7 and electric power connection line 3, and the top of blower fan 7 is provided with ship type switch 6, machine
The panel itself of the side of case 1 is fixed with insulation board 19, and mainboard 18 is fixed with insulation board 19, is fixed with the front panel 14 of cabinet 1
The top of both positive and negative polarity out splice going splice and joint holder assembly 15, both positive and negative polarity out splice going splice and joint holder assembly 15 is provided with bakelite knob
16。
Referring to Fig. 2 ~ 7, the utility model devises a kind of control of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine
Circuit processed, including：Main control circuit, motherboard circuit, control panel circuit, the main control circuit are as follows：No. 1 of rectifier bridge BR1,
No. 3 connectivity ports are connected with power switch K1 one end, and the power switch K1 other end is connected with 220V power supplys, rectifier bridge BR1
No. 2, No. 4 ports be connected respectively with B, A port of mainboard 18, the J1-5 ports of mainboard 18 and the OT ports phase of control panel 17
Even, the J1-4 ports of mainboard 18 are connected with the CT ports of control panel 17, the J1-3 ports of mainboard 18 and the DRV ports of control panel 17
It is connected, the J1-1 ports of mainboard 18 are connected with one end of 14V power supplys, the other end of 14V power supplys and the V1 ports phase of control panel 17
Even, the J2-1 ports of mainboard 18 are connected with the positive pole of cooler, and the J2-2 ports of mainboard 18 are connected with the negative pole of cooler, mainboard
18 J1-2 ports be divided into three tunnels respectively with ground, the anode connector of both positive and negative polarity out splice going splice and joint holder assembly 15, control panel
17 GND ports are connected, and the J1-6 ports of mainboard 18 are divided into two-way, respectively one end with inductance 10, the VOUT ends of control panel 17
Mouth is connected, and the other end of inductance 10 is connected with the positive terminal of both positive and negative polarity out splice going splice and joint holder assembly 15.
Motherboard circuit is as follows in the utility model：The J29 of mainboard 18 No. 1 port is connected with DC+, J29 No. 2 ports point
For six tunnels, one end with electric capacity C17, resistance R63 one end, resistance R62 one end, resistance R61 one end, electric capacity C35 respectively
One end, coil B3 No. 1 port be connected, the electric capacity C17 other end is connected with pad TS- No. 2 ports, No. 1 of pad TS-
Port is connected with DC-, and the resistance R63 other end is divided into four tunnels, respectively the other end with resistance R62, resistance R61 the other end,
The electric capacity C35 other end, diode D16 one end are connected, the other end of diode No. 2 ports with coil B3 respectively, chip
U16 DRAIN ports are connected, and chip U16 SOURCE ports are divided into No. 2 ports of the two-way respectively with pad TS-, electric capacity C21
One end be connected, chip U16 FB ports are divided into two-way, respectively the emitting stage phase of the other end with electric capacity C21, photoelectrical coupler
Connect, the chip U16 tunnel of vdd terminal mouth three, respectively one end with diode D36, the colelctor electrode of photoelectrical coupler, the one of electric capacity C36
End is connected, and the electric capacity C36 other end is divided into two-way, and one end with electric capacity C21, coil B3 No. 3 ports are connected respectively, diode
The D36 other end is connected with coil B3 No. 4 ports, and the luminous tube positive pole of photoelectrical coupler is connected with resistance R41 one end, light
The luminous tube negative pole of electric coupler is divided into two-way, and one end with diode ZD8, resistance R42 one end are connected respectively, diode
ZD8 other end ground connection, the resistance R42 other end are divided into six tunnels, respectively the other end with resistance R41,14V power supplys, electric capacity C31
One end, electric capacity C30 one end, resistance R73 one end, diode D21 one end be connected, the electric capacity C31 tunnel of the other end six, point
No. 7 ends of one end, the electric capacity C30 other end, the resistance R73 other end, resistance R74 one end, coil B3 not with electric capacity C34
Mouth and ground are connected, and the diode D21 other end is connected with coil B3 No. 8 ports, and the electric capacity C34 other end is divided into three
Road, respectively one end with 12V power supplys, the resistance R74 other end, diode D23 be connected, diode the D23 other end and coil
B3 No. 6 ports are connected；The J2 of the mainboard 18 No. 1 port ground connection, No. 2 ports are connected with 12v power supplys；The mainboard 18
PWR No. 1 port be also connected with 14V power supplys, No. 2 ports ground connection, No. 3 ports are connected with resistance R64 one end, No. 4 ports
For CT ports, No. 5 ports are connected with resistance R72 one end, and resistance R72 other end ground connection, No. 6 ports are VOUT ports, electricity
The resistance R64 other end is divided into three tunnels, respectively one end with resistance R68, FET group U15 G1 ports, FET group
U15 G2 ports are connected, and the resistance R68 other end is divided into two-way, and the S2 ports with ground, FET group U15 are connected respectively,
FET group U15 S1 ports are divided into three tunnels, respectively with 14V power supplys, electric capacity C37 one end, No. 1 of driving transformer TR1
Port is connected, and electric capacity C37 other end ground connection, FET group U15 D1A ports are divided into two-way, respectively with FET group
U15 D1B ports, electric capacity C33 one end is connected, and the electric capacity C33 other end is connected with resistance R67 one end, FET group
U15 D2A ports are divided into three tunnels, respectively the D2B ports with FET group U15, resistance the R67 other end, driving transformer
TR1 No. 2 ports are connected, and driving transformer TR1 No. 5 ports are divided into three tunnels, respectively one end with diode D13, diode
D15 one end, resistance R59 one end is connected, the diode D13 other end is divided into two-way, respectively with G1 ports, triode Q3
Emitter stage is connected, and the diode D15 other end is divided into two-way, and one end with resistance R60, triode Q3 base stage are connected respectively,
The resistance R59 other end is connected with the resistance R60 other end, and driving transformer TR1 No. 6 ports are divided into two-way, respectively with E1
Port, triode Q3 colelctor electrode are connected, and driving transformer TR1 No. 7 ports are divided into three tunnels, respectively one end with resistance R57,
Diode D14 one end, diode D12 one end is connected, and the diode D12 other end is divided into two-way, respectively with G4 ports, three
Pole pipe Q2 emitter stage is connected, and the diode D14 other end is divided into two-way, respectively one end with resistance R58, triode Q2 base
Extremely it is connected, the resistance R57 other end is connected with the resistance R58 other end, and driving transformer TR1 No. 8 ports are divided into two-way, point
Colelctor electrode not with DC- ports, triode Q2 is connected；The J26 ports of mainboard 18 are connected with rectifier bridge BR1 No. 1 port, mainboard
18 J27 ports are connected with rectifier bridge BR1 No. 3 ports, and rectifier bridge BR1 No. 2 ports are divided into six tunnels, respectively with resistance R9's
One end, diode ZD6 one end, electric capacity C2 one end, electric capacity C4 one end, resistance R4 one end, electric capacity C5 one end phase
Even, the resistance R9 other end is divided into two-way, and one end with resistance R5, triode Q4 base stage are connected respectively, and diode ZD6's is another
One end is connected with triode Q4 emitter stage, and triode Q4 colelctor electrode is connected with piezo-resistance R53 one end, piezo-resistance
The R53 other end is connected with photoelectrical coupler U9 No. 2 ports, and photoelectrical coupler U9 No. 1 port is divided into two-way, respectively with electricity
Resistance R21 one end, resistance R25 one end is connected, and the resistance R25 other end is connected with IGCT Q5 G ports, rectifier bridge
BR1 No. 4 ports are divided into four tunnels, respectively the other end with resistance R5, the resistance R21 other end, IGCT Q5 A ports, open
The one end for closing S1 is connected, and IGCT Q5 K ports are connected with thermistor RT1 one end, and the other end for switching S1 is divided into five tunnels,
The other end with thermistor RT1, the electric capacity C2 other end, the electric capacity C4 other end, resistance R3 one end, electric capacity C5 respectively
The other end is connected, and the resistance R3 other end is connected with resistance R6 one end, the resistance R6 other end and resistance R4 other end phase
Even, photoelectrical coupler U9 No. 3 ports are divided into three tunnels, respectively one end with electric capacity C1, triode Q1 emitter stage, 12V power supplys
It is connected, photoelectrical coupler U9 No. 4 ports are divided into three tunnels, respectively one end with resistance R1, the electric capacity C1 other end, diode
ZD1 one end is connected, and the resistance R1 other end is connected with 14V power supplys, the diode ZD1 other end and resistance R2 one end phase
Even, the resistance R2 other end is connected with triode Q1 base stage, and triode Q1 colelctor electrode is divided into two-way, respectively with diode D1
One end, one end of mainboard 18J20 ports is connected, and the other end of mainboard 18J20 ports is divided into two-way, respectively with diode D1's
The other end, 14V power supplys are connected；The G1 ports are also divided into one end, the resistance R7 one end of two-way respectively with resistance R10 and are connected,
The resistance R10 other end is divided into four tunnels, respectively the other end with resistance R7, resistance R8 one end, diode ZD3 one end,
IGBT pipes T1 base stage is connected, and IGBT pipes T1 current collection port is divided into two-way, and one end with DC+, diode D33 is connected respectively,
IGBT pipes T1 emission port is divided into five tunnels, respectively No. 1 port with main transformer T6, the diode ZD3 other end, resistance R8
The other end, e1 port, diode D35 one end be connected, the diode D35 other end is divided into four tunnels, respectively with DC- ends, two
Pole pipe ZD2 one end, resistance R12 one end, IGBT pipes T4 base stage are connected, and the resistance R12 other end is divided into four tunnels, respectively with
Resistance R13 one end, resistance R11 one end, the diode ZD2 other end, IGBT pipes T4 transmitting terminal are connected, resistance R13's
The other end is divided into two-way, and the other end with resistance R11, G4 ports are connected respectively, IGBT pipes T4 current collection end, is divided into two-way difference
No. 1 port of the other end, transformer T5 with diode D33 is connected, transformer T5 No. 2 ports and No. 2 ends of main transformer
Mouth is connected, and transformer T5 No. 3 ports ground connection, transformer T5 No. 4 ports are connected for CT ports, No. 3 ports of main transformer
It is divided into two-way, one end with resistance R70, diode group D38 one end are connected respectively, and the resistance R70 other end is with electric capacity C38's
One end is connected, and the electric capacity C38 other end is divided into five tunnels, respectively the other end with diode group D38, diode group D39 one end,
Diode group D40 one end, electric capacity C39 one end, VOUT ports are connected, the electric capacity C39 other end and resistance R71 one end phase
Even, the resistance R71 other end is divided into five tunnels, respectively the J33 ports with mainboard 18, ground, the diode group D40 other end, two
The pole pipe group D39 other end, main transformer T6 No. 4 ports are connected.
Control panel circuit is as follows in the utility model：The OT ports of control panel 17 are divided into one of three tunnels respectively with resistance R3
End, electric capacity C24 one end, amplifier U6C No. 9 ports are connected, electric capacity C24 other end ground connection, the resistance R3 other end point
For two-way, one end with resistance R11, chip U5 VREF ports are connected respectively, and the resistance R11 other end is divided into three tunnels, respectively
No. 10 ports, resistance R13 one end of one end, amplifier U6C with resistance R10 are connected, resistance R13 other end ground connection, electricity
The resistance R10 other end is divided into two-way, and No. 8 ports with amplifier U6C, voltage-regulator diode D1 one end are connected respectively, voltage stabilizing two
The pole pipe D1 other end is connected with resistance R9 one end, and the resistance R9 other end is divided into three tunnels, respectively one end with resistance R24,
Resistance R16 one end, triode Q3 base stage are connected, and resistance R24 other end ground connection, the resistance R16 other end is divided into three tunnels,
One end with resistance R17, resistance R14 one end, electric capacity C34 one end are connected respectively, electric capacity C34 other end ground connection, resistance
The R17 other end is connected with diode D15 one end, and the resistance R14 other end is divided into three tunnels, respectively with No. 7 of amplifier U6B
Port, the diode D15 other end, diode D14 one end are connected, the diode D14 other end and resistance R15 one end phase
Even, amplifier U6B No. 5 ports are connected with 2.5V power supplys, and amplifier U6B No. 6 ports are divided into two-way, respectively with diode
D13 one end, resistance R45 one end is connected, and the diode D13 other end is connected with chip U5 VREF ports, resistance R45's
The other end is connected with chip U5 VFB ports, and the resistance R15 other end is divided into three tunnels, respectively the colelctor electrode with triode Q3, electricity
Hinder R27 one end, swept resistance VR2 sliding end is connected, triode Q3 grounded emitter, swept resistance VR2 one end with
Swept resistance VR3 sliding end is connected, and swept resistance VR2 other end ground connection, swept resistance VR3 one end is with chip U5's
VREF ports are connected, and swept resistance VR3 other end ground connection, the resistance R27 other end is divided into two-way, respectively with resistance R25's
One end, amplifier U6A No. 3 ports are connected, and the resistance R25 other end is connected with chip U5 VCC ports, and the 2 of amplifier U6A
Number port is divided into two-way, and one end with electric capacity C18, resistance R20 one end are connected respectively, and the resistance R20 other end is divided into three
Road, respectively one end with resistance R22, electric capacity C30 one end, diode D12 one end be connected, resistance R22 other end ground connection,
Electric capacity C30 one end ground connection, amplifier U6A No. 1 port are divided into two-way, respectively the other end with electric capacity C18, diode D10
One end be connected, the diode D10 other end is divided into two-way, respectively the COMP ports with chip U5, triode Q5 colelctor electrode
It is connected, triode Q5 emitter stage is divided into four tunnels, respectively one end with resistance R40, ground, electric capacity C33 one end, resistance R39
One end be connected, the resistance R39 other end is divided into three tunnels, respectively with resistance R38 one end, the electric capacity C33 other end, diode
Z3 one end is connected, and the resistance R38 other end is connected with chip U5 VOUT ports, and the diode Z3 other end is divided into three tunnels,
The other end with resistance R40, resistance R47 one end, triode Q5 base stage are connected respectively, the resistance R47 other end and amplification
Device U6D No. 14 ports are connected, amplifier U6D No. 12 ports are divided into two-way, respectively one end with resistance R44, resistance R43
One end is connected, and the resistance R44 other end is connected with chip U5 VREF ports, resistance R43 other end ground connection, amplifier U6D
No. 13 ports be divided into two-way, one end with resistance R42, resistance R41 one end are connected respectively, resistance the R42 other end and core
Piece U5 VCC ports are connected, resistance R41 other end ground connection, the VREF ports of the chip U5 and electric capacity C20 one end phase
Even, electric capacity C20 other end ground connection, chip U5 VFB ports ground connection, chip U5 VCC ports are divided into three tunnels, respectively with electric capacity
C25 one end, resistance R29 one end, No. 1 port of mainboard 18PWR ports are connected, electric capacity C25 other end ground connection, resistance
The R29 other end is connected with voltage-regulator diode D2 one end, voltage-regulator diode D2 other end ground connection, chip U5 OUT terminal mouth
Be connected with No. 3 ports of mainboard 18PWR ports, chip U5 ISENSE ports are divided into three tunnels, respectively one end with resistance R37,
Resistance R21 one end, resistance R35 one end is connected, resistance R37 other end ground connection, resistance the R35 other end and triode Q4
Emitter stage be connected, the resistance R21 tunnel of the other end five, one end with resistance R7, resistance R31 one end, the one of resistance R32 respectively
End, diode D9 one end, the diode D12 other end are connected, and the resistance R7 other end is connected with chip U5 VCC ports,
The diode D9 other end is divided into one end, CT port of the two-way respectively with diode Z2 and is connected, the diode Z2 other end and two
Pole pipe D6 one end is connected, and the diode D6 other end is divided into three tunnels, respectively with ground, the resistance R31 other end, resistance R32
The other end be connected, chip U5 RT/CT ports are divided into four tunnels, respectively one end with electric capacity C12, resistance R12 one end, three poles
Pipe Q4 base stage, No. 4 ports of mainboard 18PWR ports are connected, electric capacity C12 other end ground connection, the resistance R12 other end and three
Pole pipe Q4 colelctor electrode is connected, chip U5 GND ports ground connection, and No. 5 ports of mainboard 18PWR ports are OT ports, mainboard
No. 6 ports of 18PWR ports are VOUT ports.
The pin of single tube IGBT module 13 is all cased with tube leg sheathing in the utility model.
Painted in the utility model on mainboard 18 brushed with UV.
The utility model solves the problems, such as the anti-dust performance of welding machine by tube leg sheathing and UV paints.Conducting metal dust adsorbs
Occur to short circuit phenomenon between IGBT pins, on control panel, is not easily caused, improve the reliable of welding machine to a certain extent
Property.
Synthesized in circuit side connector face using main circuit, switching power circuit and output rectification circuit to reduce the chi of wire harness
The very little and size of welding machine internal component, makes welding machine smaller, weight is lighter, and cost is lower；By configuring Wind Volume, High-speed DC
Cooling blower, using the good air channel formed between mainboard, IGBT radiators and MUR tube radiators, to improve the main power of heating
The cooling effectiveness of key components and parts, the cyclic duration factor of welding machine is improved, solve the problems, such as that weld interval is short.
From the point of view of the function of circuit, the input of power supply is completed by the input rectification circuit on mainboard；Pass through soft
Dynamic circuit, completes the startup of whole circuit；Various power supplys are produced by switching power circuit, powered to other circuits；Pass through PWM
Pulse width control circuit and IGBT inverter circuits complete the control of output parameter；Pass through the circuits such as overvoltage protection, overtemperature protection, ground connection
Improve the safety and reliability that welding machine uses.
As can be known from Fig. 2, circuit composition of the present utility model is mainly by power switch K1, rectifier bridge BR1, mainboard, control
Plate, cooling blower FAN, inductance L1 etc. are formed, and main circuit, output rectification circuit, switching power circuit are mainly included in mainboard.It is main
Power switch K1 controls the power supply of welding machine, and rectifier bridge BR1 will input the 220V convert alternating currents of welding machine into direct current, then defeated
Enter into mainboard.Overvoltage crowbar, soft starting circuit, IGBT single ended forward circuits, IGBT driving electricity are contained in main circuit
Road etc..Power input detects circuit, once input voltage is too high, higher than normal input voltage 50V to mainboard by overvoltage protection
Left and right（The parameter of adjustable component sets the value of needs）, welding machine will enter guard mode.For normal input
Voltage, soft-start mode can be entered through to start main circuit, switching power circuit, IGBT drive circuit and single-end ortho-exciting inversion
Circuit.Switching power circuit is responsible for generation+14V, -12V supply voltages.Caused PWM pulse-width signals are realized on control panel
To IGBT drive control, then the alternating current by single-end ortho-exciting inverter circuit by DC inverter into tens KHz.In main circuit
Main transformer then realize decompression unsteady flow；Tens KHz low pressure, big circuit signal are transformed into needed for welding by output rectification circuit
The direct current signal wanted.OUT+ represents cathode output end, and OUT- represents cathode output end.
Referring to Fig. 3 ~ 6, in control circuit of the present utility model, single-phase 220V alternating currents input welding machine, warp by cable
Over commutation bridge, overvoltage crowbar and soft starting circuit, after electric signal is by IGCT and thermistor RT1, then by switch
After power transformer and its peripheral components, the supply voltage required for control panel, blower fan, IGBT drive circuit is produced, so that
Relay is started working, and realizes the normal work of welding machine, high current is past from the contact upstream of relay.IGCT Q5 roots
Turn on and end according to the voltage relationship at three ends, thermistor RT1 resistance increases with the rising of temperature, can reduce energization
When dash current, prevent power switch 6 connect moment be burned, from Fig. 3, it will be seen that in IGBT drive signals
Control under, IGBT single tube single-end ortho-exciting inverter circuits realize inversion of the direct current signal to tens KHz AC signals, i.e., high straightening
Stream electricity is converted to medium frequency alternating current.For T5 by the AC signal feedback to control panel, main transformer T6 realizes decompression, unsteady flow, fast extensive
Medium frequency alternating current is transformed to direct current by multiple diode D38~D40.The IGBT drive signals that control panel is transmitted through become through overdriving
After depressor TR1, to control IGBT inverter circuits, when the temperature of IGBT or IGBT radiators rises, pasted sheet type thermistor R72
It can correspondingly change, temperature information is converted into electric signal, feeds back to control panel.Power supply signal after over commutation is by switch
After power transformer B3 transformations ,+14V the power supply signals and -12V power supply signals of needs are produced.
Referring to Fig. 7, in control circuit of the present utility model, feedback signal passes through operational amplifier U6 and its peripheral component
After processing, signal is fed back into PWM pulse-width controlled chip UC3845, the chip adjusts pulse width according to feedback signal.CT believes
Number feedback be inversion main transformer T6 primary current signals in mainboard, it may also be said that be current transformer T5 electric signal.
CON6 plugs on the one hand transmit pwm pulse width signal, that is, in mainboard drive circuit control signal；On the other hand,
Some signals of mainboard are fed back to control panel by CON6 plugs.OT is overtemperature protection feedback signal, and D1 is that yellow overtemperature protection refers to
Show lamp, with control panel plate forward-mounted.D2 is power supply indicator, is also mounted on front panel.
The utility model is tested by properties, functional.Even the amateur people of welding training is not received
During member's operation welding machine, current interruption phenomenon is less prone to, welding arc is very stable.
The utility model has the mentality of designing and method of uniqueness, circuit board row in terms of machine structure and circuit design
Cloth, the mode of dust-proof anti-tracking and welding machine overall construction design, make the utility model that there is low cost, high flexibility, Gao Ke
By where the advantage of property.
The utility model paints two ways to solve the problems, such as anti-dust performance using tube leg sheathing and UV, can so avoid one
A little adsorbing powder dusts containing conductive metal are on IGBT pins and circuit board, compared with pouring into a mould PGL mode, cost also phase
To lower, maintenance is more convenient；Temperature protection signal and main circuit, switching power circuit are transmitted by pasted sheet type thermistor
The size of the size of wire harness and welding machine internal component is reduced with output rectification circuit synthesis, makes welding machine smaller, weight is lighter,
Cost is lower；By configuring Wind Volume, High-speed DC cooling blower, two poles of main circuit board, IGBT radiators and fast recovery are utilized
The good air channel formed between tube radiator, to improve the cooling effectiveness for the main power critical parts that generate heat, improve the negative of welding machine
Water holdup is carried, solves the problems, such as that weld interval is short.
Surface-mounted device is additionally used in the utility model, also has a small amount of plug-in unit, circuit board is mainly using the life of automation
Production and assembling, reduce the connecting line inside machine, the technique for simplifying assembling, not only reduce product size, also reduce
Production cost and cost of transportation, make controlled current flow good, welding machine size is small, in light weight, and cost is low, more efficient.
Claims (6)
1. a kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine, including：Cabinet, fast recovery diode, MUR radiatings
Device, blower fan, IGBT radiators, single tube IGBT module, it is characterised in that：Cabinet（1）The center of inner bottom surface is fixed with fast recovery two
Pole pipe one（9）, fast recovery diode one（9）Side be provided with support column（11）, support column（11）On be fixed with inductance（10）, soon
Recovery diode one（9）Top be provided with MUR radiators（8）, MUR radiators（8）Front be provided with control panel（17）, MUR dissipates
Hot device（8）Top be provided with IGBT radiators（5）, IGBT radiators（5）Top be provided with single tube IGBT module（13）, fast recover
Diode two（12）, rectifier bridge（4）, single tube IGBT module（13）Top be provided with three hole collets（2）, fast recovery diode two
（12）Top be provided with holes collets（20）, cabinet（1）Rear board is provided with blower fan（7）With electric power connection line（3）, blower fan
（7）Top switchs provided with ship type（6）, cabinet（1）The panel itself of side is fixed with insulation board（19）, insulation board（19）Upper fixation
There is mainboard（18）, cabinet（1）Front panel（14）On be fixed with both positive and negative polarity out splice going splice and joint holder assembly（15）, both positive and negative polarity output
Joint and joint holder assembly（15）Top be provided with bakelite knob（16）.
A kind of 2. inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine according to claim 1, it is characterised in that：Institute
State single tube IGBT module（13）Pin be all cased with tube leg sheathing.
A kind of 3. inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine according to claim 1, it is characterised in that：Institute
State mainboard（18）It is upper to be painted brushed with UV.
4. a kind of circuit for being applied to inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine as claimed in claim 1, bag
Include：Main control circuit, motherboard circuit, control panel circuit, it is characterised in that：The main control circuit is as follows：The 1 of rectifier bridge BR1
Number, No. 3 connectivity ports be connected with power switch K1 one end, the power switch K1 other end is connected with 220V power supplys, rectifier bridge
No. 2 of BR1, No. 4 ports respectively with mainboard（18）B, A port be connected, mainboard（18）J1-5 ports and control panel（17）'s
OT ports are connected, mainboard（18）J1-4 ports and control panel（17）CT ports be connected, mainboard（18）J1-3 ports with control
Making sheet（17）DRV ports be connected, mainboard（18）J1-1 ports be connected with one end of 14V power supplys, the other end of 14V power supplys with
Control panel（17）V1 ports be connected, mainboard（18）J2-1 ports be connected with the positive pole of cooler, mainboard（18）J2-2 ends
Mouth is connected with the negative pole of cooler, mainboard（18）J1-2 ports be divided into three tunnels respectively with ground, both positive and negative polarity out splice going splice and connecing
Header elements（15）Anode connector, control panel（17）GND ports be connected, mainboard（18）J1-6 ports be divided into two-way, point
Not and inductance（10）One end, control panel（17）VOUT ports be connected, inductance（10）The other end and both positive and negative polarity out splice going splice
And joint holder assembly（15）Positive terminal be connected.
5. the circuit of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine according to claim 4, it is characterised in that：
The motherboard circuit is as follows：Mainboard（18）J29 No. 1 port be connected with DC+, J29 No. 2 ports are divided into six tunnels, respectively with
Electric capacity C17 one end, resistance R63 one end, resistance R62 one end, resistance R61 one end, electric capacity C35 one end, coil B3
No. 1 port be connected, the electric capacity C17 other end is connected with pad TS- No. 2 ports, pad TS- No. 1 port and DC- phases
Even, the resistance R63 other end is divided into four tunnels, respectively the other end with resistance R62, the resistance R61 other end, electric capacity C35 it is another
One end, diode D16 one end are connected, the other end of diode No. 2 ports with coil B3 respectively, chip U16 DRAIN ends
Mouth is connected, and chip U16 SOURCE ports are divided into No. 2 ports, the electric capacity C21 one end of two-way respectively with pad TS- and are connected, core
Piece U16 FB ports are divided into two-way, and the other end with electric capacity C21, the emitting stage of photoelectrical coupler are connected respectively, chip U16's
The tunnel of vdd terminal mouth three, respectively one end with diode D36, the colelctor electrode of photoelectrical coupler, electric capacity C36 one end be connected, electric capacity
The C36 other end is divided into two-way, and one end with electric capacity C21, coil B3 No. 3 ports are connected respectively, and diode D36's is another
End is connected with coil B3 No. 4 ports, and the luminous tube positive pole of photoelectrical coupler is connected with resistance R41 one end, photoelectrical coupler
Luminous tube negative pole be divided into two-way, one end with diode ZD8, resistance R42 one end are connected respectively, and diode ZD8's is another
End ground connection, the resistance R42 other end are divided into six tunnels, respectively the other end with resistance R41,14V power supplys, electric capacity C31 one end, electricity
Hold C30 one end, resistance R73 one end, diode D21 one end are connected, the electric capacity C31 tunnel of the other end six, respectively with electric capacity
C34 one end, the electric capacity C30 other end, the resistance R73 other end, resistance R74 one end, coil B3 No. 7 ports and ground
Face is connected, and the diode D21 other end is connected with coil B3 No. 8 ports, and the electric capacity C34 other end is divided into three tunnels, respectively with
12V power supplys, the resistance R74 other end, diode D23 one end are connected, the diode D23 other end and coil B3 No. 6 ends
Mouth is connected；The mainboard（18）J2 No. 1 port ground connection, No. 2 ports are connected with 12v power supplys；The mainboard（18）PWR
No. 1 port be also connected with 14V power supplys, No. 2 ports ground connection, No. 3 ports are connected with resistance R64 one end, and No. 4 ports are CT ends
Mouthful, No. 5 ports are connected with resistance R72 one end, and the resistance R72 other end is grounded, and No. 6 ports are VOUT ports, resistance R64
The other end be divided into three tunnels, one end with resistance R68, FET group U15 G1 ports respectively, FET group U15 G2
Port is connected, and the resistance R68 other end is divided into two-way, and the S2 ports with ground, FET group U15 are connected respectively, field-effect
Pipe group U15 S1 ports are divided into three tunnels, respectively with 14V power supplys, electric capacity C37 one end, driving transformer TR1 No. 1 port phase
Even, electric capacity C37 other end ground connection, FET group U15 D1A ports are divided into two-way, respectively with FET group U15's
D1B ports, electric capacity C33 one end are connected, and the electric capacity C33 other end is connected with resistance R67 one end, FET group U15's
D2A ports are divided into three tunnels, respectively the D2B ports with FET group U15, the resistance R67 other end, the 2 of driving transformer TR1
Number port is connected, and driving transformer TR1 No. 5 ports are divided into three tunnels, respectively one end with diode D13, the one of diode D15
End, resistance R59 one end be connected, the diode D13 other end is divided into two-way, respectively with G1 ports, triode Q3 emitter stage
It is connected, the diode D15 other end is divided into two-way, and one end with resistance R60, triode Q3 base stage are connected respectively, resistance R59
The other end be connected with the resistance R60 other end, driving transformer TR1 No. 6 ports are divided into two-way, respectively with e1 port, three
Pole pipe Q3 colelctor electrode is connected, and driving transformer TR1 No. 7 ports are divided into three tunnels, respectively one end with resistance R57, diode
D14 one end, diode D12 one end is connected, and the diode D12 other end is divided into two-way, respectively with G4 ports, triode Q2
Emitter stage be connected, the diode D14 other end is divided into two-way, respectively one end with resistance R58, triode Q2 base stage phase
Even, the resistance R57 other end is connected with the resistance R58 other end, and driving transformer TR1 No. 8 ports are divided into two-way, respectively with
DC- ports, triode Q2 colelctor electrode are connected；Mainboard（18）J26 ports be connected with rectifier bridge BR1 No. 1 port, mainboard
（18）J27 ports be connected with rectifier bridge BR1 No. 3 ports, rectifier bridge BR1 No. 2 ports are divided into six tunnels, respectively with resistance R9
One end, diode ZD6 one end, electric capacity C2 one end, electric capacity C4 one end, resistance R4 one end, electric capacity C5 one end phase
Even, the resistance R9 other end is divided into two-way, and one end with resistance R5, triode Q4 base stage are connected respectively, and diode ZD6's is another
One end is connected with triode Q4 emitter stage, and triode Q4 colelctor electrode is connected with piezo-resistance R53 one end, piezo-resistance
The R53 other end is connected with photoelectrical coupler U9 No. 2 ports, and photoelectrical coupler U9 No. 1 port is divided into two-way, respectively with electricity
Resistance R21 one end, resistance R25 one end is connected, and the resistance R25 other end is connected with IGCT Q5 G ports, rectifier bridge BR1
No. 4 ports be divided into four tunnels, respectively the other end with resistance R5, the resistance R21 other end, IGCT Q5 A ports, switch S1
One end be connected, IGCT Q5 K ports are connected with thermistor RT1 one end, and the other end for switching S1 is divided into five tunnels, respectively
The other end, the electric capacity C2 other end, the electric capacity C4 other end, resistance R3 one end, electric capacity C5 with thermistor RT1 it is another
End is connected, and the resistance R3 other end is connected with resistance R6 one end, and the resistance R6 other end is connected with the resistance R4 other end, light
Electric coupler U9 No. 3 ports are divided into three tunnels, and one end with electric capacity C1, triode Q1 emitter stage, 12V power supplys are connected respectively,
Photoelectrical coupler U9 No. 4 ports are divided into three tunnels, respectively one end with resistance R1, the electric capacity C1 other end, the one of diode ZD1
End is connected, and the resistance R1 other end is connected with 14V power supplys, and the diode ZD1 other end is connected with resistance R2 one end, resistance R2
The other end be connected with triode Q1 base stage, triode Q1 colelctor electrode is divided into two-way, main respectively with diode D1 one end
Plate（18）One end of J20 ports is connected, mainboard（18）The other end of J20 ports is divided into two-way, another with diode D1 respectively
End, 14V power supplys are connected；The G1 ports are also divided into one end, the resistance R7 one end of two-way respectively with resistance R10 and are connected, resistance
The R10 other end is divided into four tunnels, respectively the other end with resistance R7, resistance R8 one end, diode ZD3 one end, IGBT pipes
T1 base stage is connected, and IGBT pipes T1 current collection port is divided into two-way, and one end with DC+, diode D33 is connected respectively, IGBT pipes
T1 emission port is divided into five tunnels, respectively No. 1 port with main transformer T6, the diode ZD3 other end, resistance R8 it is another
End, e1 port, diode D35 one end are connected, and the diode D35 other end is divided into four tunnels, respectively with DC- ends, diode ZD2
One end, resistance R12 one end, IGBT pipes T4 base stage be connected, the resistance R12 other end is divided into four tunnels, respectively with resistance R13
One end, resistance R11 one end, the diode ZD2 other end, IGBT pipes T4 transmitting terminal be connected, the resistance R13 other end point
For two-way, the other end with resistance R11, G4 ports are connected respectively, IGBT pipes T4 current collection end, be divided into two-way respectively with diode
The D33 other end, transformer T5 No. 1 port are connected, and transformer T5 No. 2 ports are connected with No. 2 ports of main transformer, become
Depressor T5 No. 3 ports ground connection, transformer T5 No. 4 ports are connected for CT ports, and No. 3 ports of main transformer are divided into two-way,
One end with resistance R70, diode group D38 one end are connected respectively, and the resistance R70 other end is connected with electric capacity C38 one end,
The electric capacity C38 other end is divided into five tunnels, respectively the other end with diode group D38, diode group D39 one end, diode group
D40 one end, electric capacity C39 one end, VOUT ports are connected, and the electric capacity C39 other end is connected with resistance R71 one end, resistance
The R71 other end is divided into five tunnels, respectively with mainboard（18）J33 ports, ground, the diode group D40 other end, diode group
The D39 other end, main transformer T6 No. 4 ports are connected.
6. the circuit of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine according to claim 4, it is characterised in that：
The control panel circuit is as follows：Control panel（17）OT ports be divided into one end respectively with resistance R3 of three tunnels, the one of electric capacity C24
End, amplifier U6C No. 9 ports are connected, and electric capacity C24 other end ground connection, the resistance R3 other end is divided into two-way, respectively with electricity
Resistance R11 one end, chip U5 VREF ports be connected, the resistance R11 other end is divided into three tunnels, respectively one end with resistance R10,
Amplifier U6C No. 10 ports, resistance R13 one end is connected, and resistance R13 other end ground connection, the resistance R10 other end is divided into
Two-way, respectively No. 8 ports with amplifier U6C, voltage-regulator diode D1 one end be connected, the voltage-regulator diode D1 other end and electricity
Resistance R9 one end is connected, and the resistance R9 other end is divided into three tunnels, respectively one end with resistance R24, resistance R16 one end, three poles
Pipe Q3 base stage is connected, and resistance R24 other end ground connection, the resistance R16 other end is divided into three tunnels, respectively with the one of resistance R17
End, resistance R14 one end, electric capacity C34 one end are connected, electric capacity C34 other end ground connection, the resistance R17 other end and two poles
Pipe D15 one end is connected, and the resistance R14 other end is divided into three tunnels, respectively No. 7 ports with amplifier U6B, diode D15
The other end, diode D14 one end are connected, and the diode D14 other end is connected with resistance R15 one end, and the 5 of amplifier U6B
Number port is connected with 2.5V power supplys, and amplifier U6B No. 6 ports are divided into two-way, respectively one end with diode D13, resistance R45
One end be connected, the diode D13 other end is connected with chip U5 VREF ports, and the resistance R45 other end is with chip U5's
VFB ports are connected, and the resistance R15 other end is divided into three tunnels, respectively the colelctor electrode with triode Q3, resistance R27 one end, slip
Resistance VR2 sliding end is connected, triode Q3 grounded emitter, swept resistance VR2 one end and swept resistance VR3 slip
End is connected, and swept resistance VR2 other end ground connection, swept resistance VR3 one end is connected with chip U5 VREF ports, slides electricity
Hinder VR3 other end ground connection, the resistance R27 other end is divided into two-way, respectively one end with resistance R25, No. 3 of amplifier U6A
Port is connected, and the resistance R25 other end is connected with chip U5 VCC ports, and amplifier U6A No. 2 ports are divided into two-way, respectively
One end, resistance R20 one end with electric capacity C18 are connected, and the resistance R20 other end is divided into three tunnels, respectively with the one of resistance R22
End, electric capacity C30 one end, diode D12 one end are connected, and resistance R22 other end ground connection, electric capacity C30 one end ground connection, put
Big device U6A No. 1 port is divided into two-way, and the other end with electric capacity C18, diode D10 one end are connected respectively, diode D10
The other end be divided into two-way, the COMP ports with chip U5, triode Q5 colelctor electrode are connected respectively, triode Q5 emitter stage
It is divided into four tunnels, one end with resistance R40, ground, electric capacity C33 one end, resistance R39 one end are connected respectively, and resistance R39's is another
One end is divided into three tunnels, is connected respectively with resistance R38 one end, the electric capacity C33 other end, diode Z3 one end, resistance R38
The other end be connected with chip U5 VOUT ports, the diode Z3 other end is divided into three tunnels, another with resistance R40 respectively
End, resistance R47 one end, triode Q5 base stage are connected, and the resistance R47 other end is connected with amplifier U6D No. 14 ports,
Amplifier U6D No. 12 ports are divided into two-way, and one end with resistance R44, resistance R43 one end are connected respectively, and resistance R44's is another
One end is connected with chip U5 VREF ports, and resistance R43 other end ground connection, amplifier U6D No. 13 ports are divided into two-way, point
One end, resistance R41 one end not with resistance R42 are connected, and the resistance R42 other end is connected with chip U5 VCC ports, resistance
R41 other end ground connection, the VREF ports of the chip U5 are connected with electric capacity C20 one end, electric capacity C20 other end ground connection,
Chip U5 VFB ports ground connection, chip U5 VCC ports are divided into three tunnels, respectively one end with electric capacity C25, the one of resistance R29
End, mainboard（18）No. 1 port of PWR ports is connected, electric capacity C25 other end ground connection, resistance the R29 other end and the pole of voltage stabilizing two
Pipe D2 one end is connected, voltage-regulator diode D2 other end ground connection, chip U5 OUT terminal mouth and mainboard（18）No. 3 of PWR ports
Port is connected, and chip U5 ISENSE ports are divided into three tunnels, respectively one end with resistance R37, resistance R21 one end, resistance R35
One end be connected, resistance R37 other end ground connection, the resistance R35 other end is connected with triode Q4 emitter stage, resistance R21
The tunnel of the other end five, one end with resistance R7, resistance R31 one end, resistance R32 one end, diode D9 one end, two respectively
The pole pipe D12 other end is connected, and the resistance R7 other end is connected with chip U5 VCC ports, and the diode D9 other end is divided into
One end with diode Z2, CT ports are connected two-way respectively, and the diode Z2 other end is connected with diode D6 one end, two poles
The pipe D6 other end is divided into three tunnels, and the other end with ground, the resistance R31 other end, resistance R32 is connected respectively, chip U5's
RT/CT ports are divided into four tunnels, respectively one end with electric capacity C12, resistance R12 one end, triode Q4 base stage, mainboard（18）
No. 4 ports of PWR ports are connected, electric capacity C12 other end ground connection, the resistance R12 other end and triode Q4 colelctor electrode phase
Even, chip U5 GND ports ground connection, mainboard（18）No. 5 ports of PWR ports are OT ports, mainboard（18）No. 6 of PWR ports
Port is VOUT ports.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720641546.4U CN207139072U (en) | 2017-06-05 | 2017-06-05 | A kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine and its circuit |
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|---|---|---|---|
| CN201720641546.4U CN207139072U (en) | 2017-06-05 | 2017-06-05 | A kind of inexpensive IGBT single tubes single-end ortho-exciting inversion manual welding machine and its circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954956A (en) * | 2019-03-21 | 2019-07-02 | 浙江肯得机电股份有限公司 | A kind of IGBT inversion hand arc welding machine and its circuit structure |
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2017
- 2017-06-05 CN CN201720641546.4U patent/CN207139072U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109954956A (en) * | 2019-03-21 | 2019-07-02 | 浙江肯得机电股份有限公司 | A kind of IGBT inversion hand arc welding machine and its circuit structure |
| CN109954956B (en) * | 2019-03-21 | 2023-12-12 | 浙江肯得机电股份有限公司 | IGBT inversion manual arc welder and circuit structure thereof |
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