A kind of Multifunctional welding drive circuit
Technical field
The present invention relates to electric welding machine circuit more particularly to one kind can be applied to welding electrode arc welding, argon tungsten-arc welding, etc. from
The Multifunctional welding drive circuit of son cutting.
Background technology
In the prior art, electric welding machine is in the process of the metal materials such as steel, according to material properties and technique not
Together, it will usually use the welding machine mode of multiple functions, while be also required to cut metal in some occasions, cut out.Cause
This, has the first choice that the electric welding machine of a variety of welding functions and cutting function becomes many users.At present, Multi-functional arc welding generator
What is used is mostly the multiplication of voltage and reduction voltage circuit of relay conversion, and it is uneven same to be susceptible to output voltage in actual use
When relay contact burnt during frequent transitions the problems such as, so as to cause welding effect difference machine-spoiled rate height etc. simultaneously
Bad phenomenon.
Fig. 1 is the driving circuit of traditional multifunctional welding machine, switches various working conditions by relay.In argon arc welding and hand
When work welds working condition, relay J1B/J1C/J1D/J2B/J2C/J2D is connected to respective a ends, at this time transformer
Grade output carries out full-wave rectification by respective rectifying tube, then in parallel, so as to obtain low output voltage simultaneously while can be defeated
Go out big output current, be suitable for the welding function of argon arc welding and manual welding;In cutting machine working condition, relay J1B/
J1C/J1D/J2B/J2C/J2D is connected to respective b ends, and transformer secondary output output at this time is carried out by respective rectifying tube
Then full-wave rectification is connected, so as to be done output voltage and to export small output current connection simultaneously, be suitable for plasma and cut
Cut function.During three kinds of functions are realized, several windings of transformer output will carry out in parallel or in series, but each
The voltage of winding reality output can not possibly be identical, therefore causes the voltage electricity of each winding output in practical work process
Stream is uneven and influences the effect of welding and cutting, simultaneously as need to realize by the conversion of relay during function difference, from
And the failure rate for adding machine reduces the stability of machine.
Therefore for drawbacks described above present in currently available technology, it is really necessary to be studied, to provide a kind of scheme,
Solve defect in the prior art.
The content of the invention
In view of this, it is necessory to provide a kind of Multifunctional welding drive circuit, circuit complexity and cost are not being increased
In the case of, the demand of welding or cutting can be reached simultaneously, the performance of Multi-functional arc welding generator is effectively raised, drop simultaneously
The low failure rate of machine.
In order to solve technical problem existing in the prior art, technical scheme is as follows:
A kind of Multifunctional welding drive circuit sets in the driving circuit transformer T4, the transformer T4 to include at least
One armature winding and at least two secondary windings;The armature winding is connected with exchanging input, and the first secondary windings is defeated
Go out and export DC voltage through full-bridge rectification output module, the output of second subprime winding exports direct current through full-wave rectification output module
Pressure, wherein, the second subprime winding sets center tap terminal, and the center tap terminal is defeated with the full-bridge rectification output module
The output negative terminal for going out negative terminal with the full-wave rectification output module is connected, and the output plus terminal of the full-bridge rectification output module is made
For the first output plus terminal, the output plus terminal of the full-wave rectification output module is as the second output plus terminal.
As preferred technical solution, the full-wave rectification output module includes diode D10, diode D19, capacitance
C45 and current divider, the anode of the diode D10 are connected with the 6th pin of the second subprime winding, the diode
The anode of D19 is connected with the 8th pin of the second subprime winding, negative terminal and the diode of the diode D10
The negative terminal of D19 is connected with one end of the capacitance C45 as the second output plus terminal, the other end of the capacitance C45 and shunting
One end of device is connected as the first output negative terminal, the 7th pin of the other end of the current divider and the second subprime winding
And the output negative terminal of the full-wave rectification output module is connected, wherein, during the 7th pin of the second subprime winding is
Heart tap terminals.
As preferred technical solution, the full-wave rectification output module further includes capacitance C46 and variable resistor VR1.
As preferred technical solution, the full-bridge rectification output module uses bridge rectifier chip.
As preferred technical solution, the full-bridge rectification output module includes diode D11, diode D20, diode
D18 and diode D21.
As preferred technical solution, the full-bridge rectification output module further include inductance L1, capacitance C47, capacitance C48,
Capacitance C49, capacitance C50 and variable resistor VR2, wherein, one end and diode D20, the negative terminal of diode D21 of the inductance L1
It is connected, the other end and one end of capacitance C47, one end of capacitance C48, one end of capacitance C49, the variable resistor of the inductance L1
One end of VR2 is connected as the first output plus terminal;The other end of the capacitance C47, the other end, the variable resistor of capacitance C48
The other end of VR2 is connected jointly with the first output negative terminal;The other end of the capacitance C49, one end of capacitance C50 jointly with greatly
Ground terminal is connected, and the other end of the capacitance C50 is connected with the second output plus terminal.
As preferred technical solution, it is negative as the second output to draw a quick socket in the described first output negative terminal
End.
As preferred technical solution, first secondary windings is different with the number of turn of second subprime winding.
As preferred technical solution, the output voltage of first secondary windings is more than the defeated of the second subprime winding
Go out voltage.
As preferred technical solution, the number of turn between the armature winding, the first secondary windings and second subprime winding
Than for 10:16:4.
Compared with prior art, technical solution of the present invention saves material cost, has simple, easy realization, and effect is good
The characteristics of;The performance of Multi-functional arc welding generator is effectively raised in the case where not increasing cost, while reduces the event of machine
Barrier rate.
Description of the drawings
Fig. 1 is the circuit diagram of prior art multifunctional welding machine.
Fig. 2 is the circuit diagram of Multifunctional welding drive circuit of the present invention.
Specific examples below will be further illustrated the present invention with reference to above-mentioned attached drawing.
Specific embodiment
Graphene composite powder material provided by the invention and preparation method thereof is made furtherly below with reference to attached drawing
It is bright.
Referring to Fig. 2, the circuit diagram of Multifunctional welding drive circuit of the present invention is shown, sets and becomes in the driving circuit
Depressor T4, transformer T4 include at least one armature winding and at least two secondary windings;Armature winding is with exchanging the input phase
Connection, the output of the first secondary windings export DC voltage through full-bridge rectification output module, and the output of second subprime winding is whole through all-wave
Output module output DC voltage is flowed, wherein, second subprime winding sets center tap terminal, the center tap terminal and full-bridge rectification
The output negative terminal of output module is connected with the output negative terminal of full-wave rectification output module, and the output of full-bridge rectification output module is just
End is as the first output plus terminal, and the output plus terminal of full-wave rectification output module is as the second output plus terminal.Further, all-wave is whole
Flowing output module includes diode D10, diode D19, capacitance C45 and current divider, the anode of diode D10 and second subprime around
6th pin of group is connected, and the anode of diode D19 is connected with the 8th pin of second subprime winding, diode D10's
Negative terminal is connected with the negative terminal of diode D19 and one end of capacitance C45 as the second output plus terminal, the other end of capacitance C45 with
One end of current divider is connected as the first output negative terminal, the other end of current divider and the 7th pin of second subprime winding and
The output negative terminal of full-wave rectification output module is connected, wherein, tap terminals centered on the 7th pin of second subprime winding.Full-bridge
Rectification output module includes diode D11, diode D20, diode D18 and diode D21.
Further, full-bridge rectification output module further includes inductance L1, capacitance C47, capacitance C48, capacitance C49, capacitance C50
With variable resistor VR2, wherein, one end of inductance L1 is connected with the negative terminal of diode D20, diode D21, and inductance L1's is another
End is connected with one end of one end of capacitance C47, one end of capacitance C48, one end of capacitance C49, variable resistor VR2 as first
Output plus terminal;The other end of capacitance C47, the other end of capacitance C48, the other end of variable resistor VR2 are jointly negative with the first output
End is connected;The other end of capacitance C49, one end of capacitance C50 are connected jointly with big ground terminal, the other end of capacitance C50 and
Two output plus terminals are connected.Meanwhile a quick socket is drawn as the second output negative terminal in the first output negative terminal.
In fig. 2, three windings, one of armature winding and two secondary windings are designed on main transformer.Two times
Grade winding sets the different numbers of turn, to meet the use demand of different welding procedures.Wherein, 3 feet of transformer and 5 feet export
Secondary voltage carries out full-bridge rectification by tetra- diodes of D11/D18/D20/D21, obtains higher DC output voltage, is suitble to
In plasma cut function;In addition, by 6 foot of transformer, 7 foot, 8 foot output voltage and by D10/D19 carry out full-wave rectification, obtain
To relatively low DC output voltage, it is suitable for argon arc welding and manual welding function;The negative terminal of two direct current outputs is connected simultaneously, shape
The common port connected into welding gun, because argon tungsten-arc welding and plasma cut are required for gas and solder cutting gun, so as to entire machine
Same gun joint can be only used in welding and cutting, simplifies the operation difficulty of welder.Then rectified current is drawn respectively again
Ground wire connecting pin of the anode on road as welding and cutting.Negative terminal is exported simultaneously draws a quick socket as welding electrode arc welding
The connecting pin of electrode holders.Full-bridge rectification and full-wave rectification are merged one, shunting by the present invention by a kind of cleverly circuit structure
Device meets different application as common current limiting element by the secondary windings and multiple output interfaces that set different turn ratios
Demand, therefore, present invention driver circuit can meet three kinds of welding electrode arc welding, argon tungsten-arc welding and plasma cut functions
Use.The present invention saves material cost, has simple, easy to realize, the good spy of effect without using extra additional device
Point;The performance of Multi-functional arc welding generator is effectively raised in the case where not increasing cost, while reduces the failure rate of machine.
The explanation of above example is only intended to help to understand method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Several improvement and modification, these improvement and modification are also fallen into the protection domain of the claims in the present invention.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.