CN107931782B - Arc ignition circuit and AC-DC argon arc welding machine - Google Patents
Arc ignition circuit and AC-DC argon arc welding machine Download PDFInfo
- Publication number
- CN107931782B CN107931782B CN201711362259.0A CN201711362259A CN107931782B CN 107931782 B CN107931782 B CN 107931782B CN 201711362259 A CN201711362259 A CN 201711362259A CN 107931782 B CN107931782 B CN 107931782B
- Authority
- CN
- China
- Prior art keywords
- connect
- module
- unit
- diode
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
- B23K9/0672—Starting the arc without direct contact between electrodes
- B23K9/0673—Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention is suitable for argon arc welding machine technical field, provide a kind of arc ignition circuit and AC-DC argon arc welding machine, in arc ignition circuit, control signal interface unit is connect with stabilising arc control unit and pressurization striking control unit respectively, pressurization striking control unit is connect with stabilising arc control unit and striking generating unit respectively, isolated power supply unit is connect with stabilising arc control unit and VRD voltage output unit respectively, VRD voltage output unit is connect with stabilising arc control unit, first constant-voltage source unit is connect with stabilising arc control unit, stabilising arc control unit is connect with voltage absorptive unit, second constant-voltage source unit is connect with voltage absorptive unit.Arc ignition circuit provided by the invention substantially increases arcing initiation success rate, increases VRD voltage output unit, improve the safety of welding machine, using stabilising arc control unit, keep electric current when AC welding more reliable and more stable by improving idle voltage output.
Description
Technical field
The invention belongs to argon arc welding machine technical field more particularly to a kind of arc ignition circuits and AC-DC argon arc welding machine.
Background technique
Argon arc welding technology is that development is most fast, a kind of most widely used welding technique.In recent years, argon arc welding has been
As essential means in the welding of various metal structures, so higher and higher to the requirement of argon arc welding machine both at home and abroad.It is existing
Argon arc welding machine output voltage generally in 60V or so, if it is desired to ignite electric arc between welding gun and workpiece, and conventional method is exactly
Superposition high-voltage pulse is exported in zero load, air ionization is made by welding machine output forming circuit conducting, this mode by high-voltage pulse
Although electric arc can be ignited, often success rate is not high.Traditional improved method is to increase high-voltage pulse current, but this is to device
The requirement of part is higher, for example, improving pulse current needs multiple high-voltage capacitances in parallel, and reliability reduces, and it is hidden to there is safety
Suffer from.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of arc ignition circuit and AC-DC argon arc welding machine, to solve existing skill
AC-DC argon arc welding machine arcing initiation success rate is low in art, and reliability is lower, there are problems that security risk.
The embodiment of the invention provides a kind of arc ignition circuits, comprising:
Signal interface unit is controlled, is connect respectively with stabilising arc control unit and pressurization striking control unit, for that will receive
To first control signal be sent to the stabilising arc control unit, by the second control signal received be sent to it is described pressurization draw
Arc control unit；
It is pressurized striking control unit, connect respectively with the stabilising arc control unit and striking generating unit, is used for according to the
One control signal improves the idle voltage output of the stabilising arc control unit and controls the striking generating unit and starts to charge；
Isolated power supply unit is used for respectively as stabilising arc control list with stabilising arc control unit and VRD voltage output unit
The first and described VRD voltage output unit provides burning voltage；
VRD voltage output unit is connect with the stabilising arc control unit, for electric without output in the stabilising arc control unit
Output voltage is provided when pressure；
First constant-voltage source unit is connect with the stabilising arc control unit, for providing for the stabilising arc control unit
Constant-voltage source；
Second constant-voltage source unit is connect with the voltage absorptive unit, for providing for the voltage absorptive unit
Constant-voltage source；
Voltage absorptive unit is connect, for absorbing peak voltage when circuit polarities change with the stabilising arc control unit；
Stabilising arc control unit, for providing output electric current when circuit polarities change according to second control signal；
Striking generating unit, for electric discharge striking to occur when striking voltage reaches preset voltage value.
Further, the control signal interface unit includes resistance R2, resistance R3 and control Signal interface module；
The control Signal interface module is connect with one end of one end of resistance R2 and resistance R3 respectively；
The control Signal interface module is also connect with the pressurization striking control unit, the other end of the resistance R2 with
The stabilising arc control unit connection, the other end of the resistance R3 are connect with the stabilising arc control unit.
Further, the pressurization striking control unit includes capacitor C22, resistance R5, first switch module, second switch
Module；
The first end of the first switch module is connect with the first end of the stabilising arc control unit or second end, and described
The second end of one switch module is connect by resistance R5 and capacitor C22 with the second end of the stabilising arc control unit, and described first
The second end of switch module is connect by resistance R5 with the first end of the second switch module, and the of the second switch module
Two ends are connect with the third end of the stabilising arc control unit；
The third end of the first switch module is connect with the control signal interface unit, the second switch module
Third end is connect with the control signal interface unit.
Further, the isolated power supply unit includes filter module, power conversion module and the first transformer module；
The filter module, the power conversion module and first transformer module are sequentially connected, and described first becomes
Depressor module is connect with the stabilising arc control unit and the VRD voltage output unit respectively.
Further, the VRD voltage output unit includes diode D2, diode D15, the first current limliting module and second
Current limliting module；
The anode of diode D15 is connect with the isolated power supply unit, and the cathode of diode D15 passes through the first current limliting module
It is connect with the stabilising arc control unit, the cathode of diode D2 is connect with the isolated power supply unit, and the anode of diode D2 is logical
The second current limliting module is crossed to connect with the stabilising arc control unit.
Further, the first constant-voltage source module includes the first rectification module, the first Voltage stabilizing module and polarity electricity
Hold C17；
First rectification module is connect with first Voltage stabilizing module, the cathode output end of first Voltage stabilizing module with
The anode connection of the polar capacitor C17, the cathode of the cathode output end of first Voltage stabilizing module and the polar capacitor C17
Connection；
First rectification module is connect with the isolated power supply unit, and the polar capacitor C17 and the stabilising arc control
Unit connection.
Further, the second constant-voltage source circuit includes the second rectification module, the second Voltage stabilizing module and diode
D22；
Second rectification module is connect with second Voltage stabilizing module, the cathode output end of second Voltage stabilizing module with
The anode connection of the diode D22；
Second rectification module is connect by transformer T3 with the isolated power supply module, and the diode D22's is negative
Pole is connect with the voltage absorptive unit.
Further, the stabilising arc control unit includes the first control module, the second control module, resistance R19, capacitor
C1, capacitor C4, capacitor C6, inductance L3, diode D1, diode D10, diode D19, diode D17 and zener diode
DZ5；
The first end of first control module is connect with the first end of second control module, the second control mould
The second end of block is connect with the anode of the diode D10, and the cathode of the diode D10 passes sequentially through diode D19, two poles
Pipe D17 is connect with the anode of the diode D1, and the anode of the diode D1 connects with the first end of first control module
It connects, one end of the zener diode DZ5 is connect with the anode of the diode D10, the other end of the zener diode DZ5
It is connect with the cathode of the diode D1, the capacitor C6 and the resistance R19 are connected in parallel on the two of the zener diode DZ5
End, the capacitor C4 are connected in parallel on the both ends of the diode D19, and the capacitor C1 is connected in parallel on the both ends of the diode D17；
The first end of first control module is connect by inductance L3 with the voltage absorptive unit, first control
The third end of module and the third end of second control module are connect with the control signal interface unit, the diode
The cathode of D17 is connect by connector CN4 with the first constant-voltage source unit.
Further, the striking generating unit include resistance R18, resistance R11, capacitor C18, capacitor C19, capacitor C20,
Normally opened contact K3B, arc electrode FD1, arc electrode FD2, connector J1, connector CN1 and the transformer T2 of relay K3；
One end of the capacitor C18 is connect with the first end of the armature winding of transformer T3, the other end of the capacitor C18
It is connect with the first end of the armature winding of transformer T2, one end of the normally opened contact K3B of the relay K3 is with transformer T3's
The second end of armature winding connects, the armature winding of the other end and transformer T2 of the normally opened contact K3B of the relay K3
Second end connection, the resistance R18 are connected in parallel on the both ends of the armature winding of transformer T2, and the first of the secondary windings of transformer T2
End is connect by connector J1, resistance R11 with arc electrode FD2, and the second end of the secondary windings of transformer T2 passes through connector
CN1 is connect with arc electrode FD1, and one end of capacitor C19 is connect with arc electrode FD2, the other end and transformer T2 of capacitor C19
Secondary windings second end connection, one end of capacitor C20 connect with arc electrode FD2, the other end and transformer of capacitor C20
The second end of the secondary windings of T2 connects.
The embodiment of the invention also provides a kind of AC-DC argon arc welding machines including arc ignition circuit in above-mentioned technical proposal.
The beneficial effect of arc ignition circuit and AC-DC argon arc welding machine provided by the invention is: compared with prior art, this
The arc ignition circuit that invention provides improves stabilising arc control unit by the first constant-voltage source unit and pressurization striking control unit
For the low current that idle voltage output, first high-voltage pulse are formed by air ionization, the high current formed after pressurization is bigger by air
Degree ionization, impedance loop is lower and exports electric current increase at this time, substantially increases arcing initiation success rate, the course of work safely may be used
It leans on；Safety output voltage is provided in zero load using VRD voltage output unit, can prevent from getting an electric shock；Using stabilising arc control unit,
Keep electric current when AC welding more reliable and more stable.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of arc ignition circuit provided in an embodiment of the present invention；
Fig. 2 is the part circuit structure figure of arc ignition circuit provided in an embodiment of the present invention；
Fig. 3 is the circuit structure diagram of voltage absorptive unit provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Please also refer to Fig. 1 and Fig. 2, arc ignition circuit provided in an embodiment of the present invention includes:
Signal interface unit 11 is controlled, is connect respectively with stabilising arc control unit and pressurization striking control unit, for that will connect
The first control signal received is sent to the stabilising arc control unit, and the second control signal received is sent to the pressurization
Striking control unit；
It is pressurized striking control unit 12, is connect respectively with the stabilising arc control unit and striking generating unit, basis is used for
First control signal improves the idle voltage output of the stabilising arc control unit and controls the striking generating unit and starts to charge；
Isolated power supply unit 13 is connect with stabilising arc control unit 18 and VRD voltage output unit 14 respectively, for being described
Stabilising arc control unit 18 and the VRD voltage output unit 14 provide burning voltage；
VRD voltage output unit 14 is connect with the stabilising arc control unit 18, in 18 nothing of stabilising arc control unit
Output voltage is provided when output voltage；
First constant-voltage source unit 15 is connect with the stabilising arc control unit 18, for being the stabilising arc control unit
18 provide constant-voltage source；
Second constant-voltage source unit 16 is connect with the voltage absorptive unit 17, for being the voltage absorptive unit
17 provide constant-voltage source；
Voltage absorptive unit 17 is connect, for absorbing spike when circuit polarities change with the stabilising arc control unit 18
Voltage；
Stabilising arc control unit 18, for providing output electric current when circuit polarities change according to second control signal；
Striking generating unit 19, for electric discharge striking to occur when striking voltage reaches preset voltage value.
The beneficial effect of arc ignition circuit and AC-DC argon arc welding machine provided by the invention is: compared with prior art, this
The arc ignition circuit that invention provides improves stabilising arc control unit by the first constant-voltage source unit and pressurization striking control unit
For the low current that idle voltage output, first high-voltage pulse are formed by air ionization, the high current formed after pressurization is bigger by air
Degree ionization, impedance loop is lower and exports electric current increase at this time, substantially increases arcing initiation success rate, the course of work safely may be used
It leans on；Safety output voltage is provided in zero load using VRD voltage output unit, can prevent from getting an electric shock；Using stabilising arc control unit,
Keep electric current when AC welding more reliable and more stable.
Further, the control signal interface unit 11 includes resistance R2, resistance R3 and control Signal interface module；
The control Signal interface module is connect with one end of one end of resistance R2 and resistance R3 respectively；
The control Signal interface module is also connect with the pressurization striking control unit, the other end of the resistance R2 with
The stabilising arc control unit connection, the other end of the resistance R3 are connect with the stabilising arc control unit.
Specifically, control Signal interface module is connector CN20, can receive the control signal of external transmission, control letter
Number interface unit connect with pressurization striking control unit and stabilising arc control unit respectively, and is sent respectively to increase by signal is controlled
Press striking control unit and stabilising arc control unit.
Further, the pressurization striking control unit 12 is opened including capacitor C22, resistance R5, first switch module, second
Close module；
The first end of the first switch module is connect with the first end of the stabilising arc control unit or second end, and described
The second end of one switch module is connect by resistance R5 and capacitor C22 with the second end of the stabilising arc control unit, and described first
The second end of switch module is connect by resistance R5 with the first end of the second switch module, and the of the second switch module
Two ends are connect with the third end of the stabilising arc control unit；
The third end of the first switch module is connect with the control signal interface unit, the second switch module
Third end is connect with the control signal interface unit.
Specifically, first switch module includes relay K1 and its contact K1A, diode D21, triode Q6, resistance R20
With resistance R21, the first end of first switch module is the selection closed end of contact K1A, be can choose and stabilising arc control unit
First end or second end connection, the first end of stabilising arc control unit are the port of the first current limliting module access, stabilising arc control unit
Second end be the access of the second current limliting module port, the second end of first switch module is the fixing end of contact K1A, and first opens
The third end for closing module is R20 and controls the connecting pin of signal interface unit, relay K1 one end connection+24V voltage, the other end
It is connect with the collector of triode Q6, the base stage of triode Q6 is connect by resistance R20 with control signal interface unit, triode
The emitter of Q6 is grounded, and one end of resistance R21 is connect with the base stage of triode Q6, and the emitter of the other end and triode Q6 connect
It connects, according to the control signal that control signal interface unit is sent, can control cut-offfing for triode Q6, further control relay
The route that the contact K1A selection of K1 is connected.Second switch module include relay K3 and its normally opened contact K3A, diode D27,
Triode Q4, resistance R109 and resistance R110, the first end of second switch module are the selection closed end of contact K3A, and second opens
The second end for closing module is the fixing end of contact K3A, and the third end of second switch module is resistance R109 and control signaling interface
The connecting pin of unit, the third end of stabilising arc control unit are one end that stabilising arc control unit is connect with the port 2 of connector CN3,
Relay K3 one end connection+24V voltage, the other end are connect with the collector of triode Q4, and the base stage of triode Q4 passes through resistance
R109 is connect with control signal interface unit, the emitter ground connection of triode Q4, one end of resistance R110 and the base of triode Q4
Pole connection, the other end are connect with the emitter of triode Q4, according to the control signal that control signal interface unit is sent, can be controlled
Triode Q4's processed cut-offs, and further controls cut-offfing for the normally opened contact K3A of relay K3.
The auxiliary winding of the external main transformer of connector CN2 connection, is the first constant-voltage source unit, the second constant-voltage
Source unit and striking generating unit provide burning voltage, and high-frequency alternating current is accessed from connector CN2, by D5, D6, D7, D8 into
Capacitor C17 voltage is maintained 250V, the contact of relay K1 by row full-bridge rectification, then the voltage regulator circuit formed through IGBT pipe Q1
K1A determines that resistance R5 gives capacitor C1 or capacitor C4 one of charging, synchronous with outside major loop output polarity realization when striking
Matching.Different bond patterns has different output polarities.
Further, the isolated power supply unit 13 includes filter module, power conversion module and the first transformer module；
The filter module, the power conversion module and first transformer module are sequentially connected, and described first becomes
Depressor module is connect with the stabilising arc control unit and the VRD voltage output unit respectively.
Specifically, filter module includes in parallel capacitor C15 and capacitor C16, and the common end connections of two capacitors+
15V voltage, another common end grounding can filter out unnecessary alternating component in ripple and electric current.Power conversion module
Including power conversion chip U6, resistance R40, resistance R41, resistance R42, resistance R43, capacitor C11, capacitor C12, capacitor C13, electricity
Hold C14, diode D12 and light emitting diode D18, electric current conversion may be implemented, and be effectively isolated.First transformer module
Including four secondary winding circuits, four secondary winding circuits include capacitor C7, capacitor C8, capacitor C9, capacitor C10, polarity electricity
Hold CE3, polar capacitor CE4, polar capacitor CE5, polar capacitor CE6, diode D11, diode D13, diode D14 and two poles
Pipe D16, two groups of isolated power supplies that two of them secondary winding circuit generates are respectively photoelectrical coupler U1 and photoelectrical coupler U2
Driving power, voltage of the two groups of isolated power supplies that other two secondary winding circuit generates as VRD voltage output unit are provided
Source.
Further, the VRD voltage output unit includes diode D2, diode D15, the first current limliting module and second
Current limliting module；
The anode of diode D15 is connect with the isolated power supply unit, and the cathode of diode D15 passes through the first current limliting module
It is connect with the stabilising arc control unit, the cathode of diode D2 is connect with the isolated power supply unit, and the anode of diode D2 is logical
The second current limliting module is crossed to connect with the stabilising arc control unit.
Specifically, the first current limliting module is resistance R13 and resistance R16 in parallel, and the second current limliting module is resistance in parallel
R14 and R17.
VRD refers to reduction idle voltage output, realizes the function of protection against electric shock.It is produced by the isolating transformer of isolated power supply unit
Two groups of raw isolated power supply VRD voltages (generally 9V~15V level) pass through diode D15, resistance R13, resistance R16, two poles
Pipe D2, resistance R14, resistance R17 are added to capacitor C1 and capacitor C4 respectively, and wherein diode D15 and diode D2 is main in outside
Circuit output have voltage (generally 60V level) and be higher than VRD voltage when automatically shut down, resistance R13, resistance R16, resistance R14,
Resistance R17 is for limiting VRD output electric current.
There are two effects for VRD voltage: being on the one hand used as Safety output voltage, prevents from getting an electric shock, on the other hand leads back in outside
There is provided the voltage source of Voltage Feedback when road is without output, for detect welding rod and workpiece whether Duan Lu behavior.
When external major loop without export and the polarity chron that is positive (external major loop output polarity is by mixing secondary inverting topology control
System), IGBT pipe Q2 is opened capacitor C1 voltage superposition to output, and IGBT pipe Q2, IGBT pipe Q3 all ends when having output.
When external major loop without export and the polarity chron that is negative (external major loop output polarity is by mixing secondary inverting topology control
System), IGBT pipe Q3 conducting is by capacitor C4 voltage superposition to output, and IGBT pipe Q2, IGBT pipe Q3 all ends when having output
Further, the first constant-voltage source module includes the first rectification module, the first Voltage stabilizing module and polarity electricity
Hold C17；
First rectification module is connect with first Voltage stabilizing module, the cathode output end of first Voltage stabilizing module with
The anode connection of the polar capacitor C17, the cathode of the cathode output end of first Voltage stabilizing module and the polar capacitor C17
Connection；
First rectification module is connect with the isolated power supply unit, and the polar capacitor C17 and the stabilising arc control
Unit connection.
Specifically, the first rectification module be include diode D5, diode D6, diode D7 and diode D8 full-bridge it is whole
Current circuit.First Voltage stabilizing module includes resistance R6, resistance R8, capacitor C5, diode D3, zener diode DZ1, zener diode
DZ2, the positive of bi-directional voltage stabilizing diode DZ3 and IGBT pipe Q1, diode D3 connect with the collector of IGBT pipe Q1, diode D3
Cathode pass sequentially through the grid of capacitor C15, zener diode DZ2, zener diode DZ1 and resistance R6 and IGBT pipe Q1 and connect
It connecing, one end of resistance R8 is connect with the cathode of diode D3, and the other end of resistance R8 is connect with the cathode of zener diode DZ1,
One end of bi-directional voltage stabilizing diode DZ3 is connect with the emitter of IGBT pipe Q1, the other end of bi-directional voltage stabilizing diode DZ3 and pressure stabilizing
The cathode of diode DZ1 connects.
When starting striking, high-frequency alternating current is accessed from connector CN2, by diode D5, diode D6, diode D7
Full-bridge rectification is carried out with diode D8, then is charged through the voltage regulator circuit in the first Voltage stabilizing module to polar capacitor C17, by pole
The voltage of property capacitor C17 maintains 250V.
Further, the second constant-voltage source circuit includes the second rectification module, the second Voltage stabilizing module and diode
D22；
Second rectification module is connect with second Voltage stabilizing module, the cathode output end of second Voltage stabilizing module with
The anode connection of the diode D22；
Second rectification module is connect by transformer T3 with the isolated power supply module, and the diode D22's is negative
Pole is connect with the voltage absorptive unit.
Specifically, the second rectification module is include diode D20, diode D21, diode D24 and diode D25 complete
Bridge rectification circuit.Second Voltage stabilizing module includes resistance R15, resistance R22, capacitor C23, diode D23, zener diode DZ6, steady
Diode DZ7, the anode of bi-directional voltage stabilizing diode DZ4 and IGBT pipe Q5, diode D23 and the collector of IGBT pipe Q5 is pressed to connect
It connects, the cathode of diode D23 passes sequentially through capacitor C23, zener diode DZ7, zener diode DZ6 and resistance R15 and IGBT
The grid of pipe Q5 connects, and one end of resistance R22 is connect with the cathode of diode D23, the other end and zener diode of resistance R22
The cathode of DZ6 connects, and one end of bi-directional voltage stabilizing diode DZ4 is connect with the emitter of IGBT pipe Q5, bi-directional voltage stabilizing diode DZ4
The other end connect with the cathode of zener diode DZ6.
When to prevent exchange from exporting, the backward voltage spike breakdown power device generated in circuit, general meeting simultaneously connects spike
Voltage absorpting circuit, absorbing circuit are made of bulky capacitor, discharge resistance and discharge switch pipe, absorb voltage range be greater than
300V。
Since capacitance voltage is zero in welding initial state absorbing circuit, being pressurized high pressure that striking and stabilising arc are discharged can be to inhaling
It receives circuit capacitance charging and takes partial boost striking and stabilising arc energy away, will lead to pressurization striking and stabilising arc effect in welding and start rank
Section can be deteriorated.Therefore Absorption Capacitance is precharged to 250V to avoid the above problem using the second constant-voltage source unit.
Further, the stabilising arc control unit includes the first control module, the second control module, resistance R19, capacitor
C1, capacitor C4, capacitor C6, inductance L3, diode D1, diode D10, diode D19, diode D17 and zener diode
DZ5；
The first end of first control module is connect with the first end of second control module, the second control mould
The second end of block is connect with the anode of the diode D10, and the cathode of the diode D10 passes sequentially through diode D19, two poles
Pipe D17 is connect with the anode of the diode D1, and the anode of the diode D1 connects with the first end of first control module
It connects, one end of the zener diode DZ5 is connect with the anode of the diode D10, the other end of the zener diode DZ5
It is connect with the cathode of the diode D1, the capacitor C6 and the resistance R19 are connected in parallel on the two of the zener diode DZ5
End, the capacitor C4 are connected in parallel on the both ends of the diode D19, and the capacitor C1 is connected in parallel on the both ends of the diode D17；
The first end of first control module is connect by inductance L3 with the voltage absorptive unit, first control
The third end of module and the third end of second control module are connect with the control signal interface unit, the diode
The cathode of D17 is connect by connector CN4 with the first constant-voltage source unit.
Specifically, the external cement resistor of connector CN4, the first control module include photoelectrical coupler U1, resistance R1, resistance
R4, resistance R7, capacitor C2, light emitting diode D4 and IGBT pipe Q2, the second control module include photoelectrical coupler U2, resistance R9,
Resistance R10, resistance R12, capacitor C3, light emitting diode D9 and IGBT pipe Q3.The control sent according to control Signal interface module
Signal can control cut-offfing for IGBT pipe Q2 and IGBT pipe Q3, when IGBT pipe Q2 is connected, and IGBT pipe Q3 ends, capacitor C1's
Voltage superposition is to output, and when IGBT pipe Q2 ends, and IGBT pipe Q3 is connected, the voltage superposition of capacitor C4 is to exporting.
Further, the striking generating unit include resistance R18, resistance R11, capacitor C18, capacitor C19, capacitor C20,
Normally opened contact K3B, arc electrode FD1, arc electrode FD2, connector J1, connector CN1 and the transformer T2 of relay K3；
One end of the capacitor C18 is connect with the first end of the armature winding of transformer T3, the other end of the capacitor C18
It is connect with the first end of the armature winding of transformer T2, one end of the normally opened contact K3B of the relay K3 is with transformer T3's
The second end of armature winding connects, the armature winding of the other end and transformer T2 of the normally opened contact K3B of the relay K3
Second end connection, the resistance R18 are connected in parallel on the both ends of the armature winding of transformer T2, and the first of the secondary windings of transformer T2
End is connect by connector J1, resistance R11 with arc electrode FD2, and the second end of the secondary windings of transformer T2 passes through connector
CN1 is connect with arc electrode FD1, and one end of capacitor C19 is connect with arc electrode FD2, the other end and transformer T2 of capacitor C19
Secondary windings second end connection, one end of capacitor C20 connect with arc electrode FD2, the other end and transformer of capacitor C20
The second end of the secondary windings of T2 connects.
Specifically, transformer T2 includes armature winding, secondary windings and a diode, the anode of diode with it is secondary around
Group connection, cathode are connect with connector J1.
When external major loop without output and is positive polarity, when striking starts, the normally opened contact K3A of relay K3 is attracted simultaneously
Capacitor C19, capacitor C20 are started to charge in striking generating unit, the armature winding of the external striking transformer of connector CN1 connection,
When reaching electric discharge mouth discharge breakdown voltage, i.e. puncture between arc electrode FD1 and arc electrode FD2, capacitor C19, electricity
Hold C20 with and connector CN1 connect armature winding generation resonance, striking transformer secondary output winding by generation about 10,000 Fu Zuo
Right high pressure is added to output, and since the normally opened contact K3A of relay K3 is attracted, while resistance R5 gives capacitor C1 charging to promote capacitor
C1 voltage, by capacitor C1 voltage superposition to output, the normally opened contact K3A of striking successful subsequent electric appliance K3 is disconnected for IGBT pipe Q2 conducting
It opens.
Further, the voltage absorptive unit includes capacitor 35, capacitor C36, polar capacitor C32, resistance R31, resistance
R32, resistance R33, diode D31, diode D32, diode D33, diode D34, zener diode DZ31, zener diode
DZ32, zener diode DZ33, transistor VT1 and connector CN5.
Diode D31, diode D32, diode D33 and diode D34 constitute full bridge rectifier, the second constant-voltage
Source unit is connect by connector CN3 with voltage absorptive unit, the both ends of capacitor C36 respectively with the port 3 of connector CN3 and hold
4 connection of mouth, polar capacitor C32 and resistance R31 are connected in parallel on the both ends of above-mentioned full bridge rectifier, resistance R32, zener diode
After DZ32 and zener diode DZ31 is sequentially connected in series, the both ends of resistance R31 are connected in parallel on, capacitor C35 is connected in parallel on the two of resistance R32
The drain at end, transistor VT1 is connect by connector CN5 with the anode of polar capacitor C32, the source level and polarity of transistor VT1
The cathode of capacitor C32 connects, and the grid of transistor VT1 is connect by resistance R33 with the anode of zener diode DZ32, pressure stabilizing two
The anode of pole pipe DZ33 is connect with the source level of transistor VT1, and the cathode of zener diode DZ33 and the grid of transistor VT1 connect
It connects.
The embodiment of the present invention also provides a kind of AC-DC argon arc welding machine, and AC-DC argon arc welding machine includes in above-described embodiment
Arc ignition circuit, the specific structure of each unit and function are referring to above-described embodiment in arc ignition circuit, due to the alternating current-direct current argon arc
Welding machine uses all technical solutions of above-described embodiment, therefore at least institute brought by the technical solution with above-described embodiment
There is beneficial effect.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, system embodiment described above is only schematical, for example, the division of the module or unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of arc ignition circuit characterized by comprising
Signal interface unit is controlled, is connect respectively with stabilising arc control unit and pressurization striking control unit, for what will be received
First control signal is sent to the stabilising arc control unit, and the second control signal received is sent to the pressurization striking control
Unit processed；
It is pressurized striking control unit, is connect respectively with the stabilising arc control unit and striking generating unit, for according to the first control
Signal processed improves the idle voltage output of the stabilising arc control unit and controls the striking generating unit and starts to charge；
Isolated power supply unit is connect with stabilising arc control unit and VRD voltage output unit respectively, single for controlling for the stabilising arc
The first and described VRD voltage output unit provides burning voltage；
VRD voltage output unit is connect with the stabilising arc control unit, for when the stabilising arc control unit is without output voltage
Output voltage is provided；
First constant-voltage source unit is connect with the stabilising arc control unit, for providing constant pressure for the stabilising arc control unit
Voltage source；
Second constant-voltage source unit, connect with voltage absorptive unit, for providing constant-voltage for the voltage absorptive unit
Source；
The voltage absorptive unit is connect, for absorbing peak voltage when circuit polarities change with the stabilising arc control unit；
Stabilising arc control unit, for providing output electric current when circuit polarities change according to second control signal；
Striking generating unit, for electric discharge striking to occur when striking voltage reaches preset voltage value.
2. arc ignition circuit according to claim 1, which is characterized in that the control signal interface unit include resistance R2,
Resistance R3 and control Signal interface module；
The control Signal interface module is connect with one end of one end of resistance R2 and resistance R3 respectively；
The other end of the resistance R2 is connect with the stabilising arc control unit, and the other end and the stabilising arc of the resistance R3 controls
Unit connection.
3. arc ignition circuit according to claim 1, which is characterized in that the pressurization striking control unit include capacitor C22,
Resistance R5, first switch module, second switch module；
The first end of the first switch module is connect with the first end of the stabilising arc control unit or second end, and described first opens
The second end for closing module is connect by resistance R5 and capacitor C22 with the second end of the stabilising arc control unit, the first switch
The second end of module is connect by resistance R5 with the first end of the second switch module, the second end of the second switch module
It is connect with the third end of the stabilising arc control unit；
The third end of the first switch module is connect with the control signal interface unit, the third of the second switch module
End is connect with the control signal interface unit.
4. arc ignition circuit according to claim 1, which is characterized in that the isolated power supply unit includes filter module, electricity
Source conversion module and the first transformer module；
The filter module, the power conversion module and first transformer module are sequentially connected, first transformer
Module is connect with the stabilising arc control unit and the VRD voltage output unit respectively.
5. arc ignition circuit according to claim 1, which is characterized in that the VRD voltage output unit include diode D2,
Diode D15, the first current limliting module and the second current limliting module；
The anode of diode D15 is connect with the isolated power supply unit, and the cathode of diode D15 passes through the first current limliting module and institute
The connection of stabilising arc control unit is stated, the cathode of diode D2 connect with the isolated power supply unit, and the anode of diode D2 passes through the
Two current limliting modules are connect with the stabilising arc control unit.
6. arc ignition circuit according to claim 1, which is characterized in that the first constant-voltage source module includes first whole
Flow module, the first Voltage stabilizing module and polar capacitor C17；
First rectification module is connect with first Voltage stabilizing module, the cathode output end of first Voltage stabilizing module with it is described
The cathode of the anode connection of polar capacitor C17, the cathode output end of first Voltage stabilizing module and the polar capacitor C17 connect
It connects；
First rectification module is connect with the isolated power supply unit, the polar capacitor C17 and the stabilising arc control unit
Connection.
7. arc ignition circuit according to claim 1, which is characterized in that the second constant-voltage source circuit includes second whole
Flow module, the second Voltage stabilizing module and diode D22；
Second rectification module is connect with second Voltage stabilizing module, the cathode output end of second Voltage stabilizing module with it is described
The anode connection of diode D22；
Second rectification module is connect by transformer T3 with the isolated power supply unit, the cathode of the diode D22 and
The voltage absorptive unit connection.
8. arc ignition circuit according to claim 1, which is characterized in that the stabilising arc control unit includes the first control mould
Block, the second control module, resistance R19, capacitor C1, capacitor C4, capacitor C6, inductance L3, diode D1, diode D10, diode
D19, diode D17 and zener diode DZ5；
The first end of first control module is connect with the first end of second control module, second control module
Second end is connect with the anode of the diode D10, and the cathode of the diode D10 passes sequentially through diode D19, diode
D17 is connect with the anode of the diode D1, and the anode of the diode D1 is connect with the first end of first control module,
The anode of one end of the zener diode DZ5 and the diode D10 connects, the other end of the zener diode DZ5 and
The cathode of the diode D1 connects, and the capacitor C6 and the resistance R19 are connected in parallel on the two of the zener diode DZ5
End, the capacitor C4 are connected in parallel on the both ends of the diode D19, and the capacitor C1 is connected in parallel on the both ends of the diode D17；
The first end of first control module is connect by inductance L3 with the voltage absorptive unit, first control module
Third end and the third end of second control module connect with the control signal interface unit, the diode D17
Cathode connect with the first constant-voltage source unit by connector CN4.
9. arc ignition circuit according to claim 1, which is characterized in that the striking generating unit includes resistance R18, resistance
R11, it capacitor C18, capacitor C19, capacitor C20, the normally opened contact K3B of relay K3, arc electrode FD1, arc electrode FD2, connects
Plug-in unit J1, connector CN1 and transformer T2；
One end of the capacitor C18 is connect with the first end of the armature winding of transformer T3, the other end of the capacitor C18 and change
The first end of the armature winding of depressor T2 connects, one end of the normally opened contact K3B of the relay K3 and the primary of transformer T3
The second end of winding connects, and the second of the armature winding of the other end and transformer T2 of the normally opened contact K3B of the relay K3
End connection, the resistance R18 are connected in parallel on the both ends of the armature winding of transformer T2, and the first end of the secondary windings of transformer T2 is logical
Cross connector J1, resistance R11 is connect with arc electrode FD2, the second end of the secondary windings of transformer T2 by connector CN1 with
Arc electrode FD1 connection, one end of capacitor C19 are connect with arc electrode FD2, time of the other end and transformer T2 of capacitor C19
The second end connection of grade winding, one end of capacitor C20 are connect with arc electrode FD2, and the other end of capacitor C20 is with transformer T2's
The second end of secondary windings connects.
10. a kind of AC-DC argon arc welding machine, which is characterized in that including the described in any item arc ignition circuits of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362259.0A CN107931782B (en) | 2017-12-18 | 2017-12-18 | Arc ignition circuit and AC-DC argon arc welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711362259.0A CN107931782B (en) | 2017-12-18 | 2017-12-18 | Arc ignition circuit and AC-DC argon arc welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107931782A CN107931782A (en) | 2018-04-20 |
| CN107931782B true CN107931782B (en) | 2019-10-22 |
Family
ID=61944580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711362259.0A Active CN107931782B (en) | 2017-12-18 | 2017-12-18 | Arc ignition circuit and AC-DC argon arc welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107931782B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399782B (en) * | 2021-05-31 | 2023-03-28 | 深圳市佳士科技股份有限公司 | Arc striking circuit and electric welding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537728A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Circuit for increasing small current arc striking successful rate and stability of inverter argon arc welding machine |
| CN205834454U (en) * | 2016-06-28 | 2016-12-28 | 深圳市恒炬晟科技有限公司 | Argon arc welding supercharging arc ignition circuit |
| CN106695071A (en) * | 2016-12-30 | 2017-05-24 | 唐山松下产业机器有限公司 | Arc striking control method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139285A (en) * | 1980-03-31 | 1981-10-30 | Kyodo Sanso Kk | Method for generating arc in gas shielded metal arc welding |
-
2017
- 2017-12-18 CN CN201711362259.0A patent/CN107931782B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537728A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Circuit for increasing small current arc striking successful rate and stability of inverter argon arc welding machine |
| CN205834454U (en) * | 2016-06-28 | 2016-12-28 | 深圳市恒炬晟科技有限公司 | Argon arc welding supercharging arc ignition circuit |
| CN106695071A (en) * | 2016-12-30 | 2017-05-24 | 唐山松下产业机器有限公司 | Arc striking control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107931782A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103931273B (en) | Driver circuit for dimmable solid state light source | |
| CN205092785U (en) | Three phase current | |
| CN100508684C (en) | Electronic controller for large power gas discharge lamp | |
| CN208016090U (en) | A kind of pulse xenon lamp power source device of band triggering pre-burning device | |
| CN111885763B (en) | Low-power pulse xenon lamp control method and control circuit | |
| CN107931782B (en) | Arc ignition circuit and AC-DC argon arc welding machine | |
| CN102764697A (en) | Flexible and stable high-voltage power supply of electrostatic precipitator | |
| CN203245482U (en) | High-frequency arc starting circuit with direct-current voltage output | |
| CN103111719B (en) | High frequency arc ignition circuit with direct current voltage output | |
| CN113079605A (en) | High-efficiency reliable high-frequency large-current pulse type xenon lamp pre-burning system | |
| CN209881475U (en) | Small-size switching power supply charging circuit | |
| CN108340048B (en) | Contactless arc ignition circuit for argon arc welding machine | |
| CN207766147U (en) | A kind of reverse switch transistor trigger circuit and pulse plasma power supply | |
| CN2806025Y (en) | High-frequency high-voltage arc striking device | |
| CN207398903U (en) | A kind of wall socket charging circuit and wall socket device | |
| CN208890677U (en) | A kind of automobile high power rectification circuit | |
| CN2779794Y (en) | Gas-discharge lamp ballast | |
| CN106216810A (en) | The high-voltage arc ignition circuit of Width funtion input argon arc welding machine | |
| CN102032086B (en) | Gasoline engine igniter controlled by single-chip microprocessor (SCM) | |
| CN2688016Y (en) | Electronic controller for high power gas discharge lamp | |
| CN206575635U (en) | LLC high-power LED driving power sources | |
| CN205746190U (en) | Replaced type LED lamp tube | |
| CN206498567U (en) | A kind of Low emissivity LED drive power | |
| CN2912190Y (en) | Negative ion energy saving lamp | |
| CN204810599U (en) | All -purpose emitting diode fluorescent tube, electrical power generating system and emitting diode drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |