CN205950065U - Permanent magnetism frequency conversion engine welding machine - Google Patents
Permanent magnetism frequency conversion engine welding machine Download PDFInfo
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- CN205950065U CN205950065U CN201620863322.3U CN201620863322U CN205950065U CN 205950065 U CN205950065 U CN 205950065U CN 201620863322 U CN201620863322 U CN 201620863322U CN 205950065 U CN205950065 U CN 205950065U
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Abstract
The utility model discloses a permanent magnetism frequency conversion engine welding machine relates to electricity generation and welding field, including permanent magnet generator and permanent magnetism electric welding, just permanent magnet generator with the circuit difference independent setting of permanent magnetism electric welding, the stator of this engine welding machine is towards the groove of piece I in, and the winding has same phase three routes three -phase four -wire winding coil, constitutes three permanent magnet generator coil, and with the winding has two way three -phase four -wire line winding coils in the adjacent groove II in groove I, forms first permanent magnetism electric welding coil and second permanent magnetism electric welding coil, give respectively welding A with welding B supplying power, the utility model discloses control accuracy is high, and control response is fast, and is insulating reliably small, can realize stable welding and auxiliary electrical power source power supply simultaneously.
Description
Technical field
The utility model is related to generate electricity and welding field is and in particular to a kind of permanent-magnetic variable-frequency engine welder.
Background technology
At present, plasma cutting inverter is widely used in the weld job to various non ferrous metal and their alloy for the industrial every profession and trade.
Plasma cutting inverter is lightweight with it, small volume, consumes that copper material, steel are few, energy-saving effect is notable and welding technological properties during production
Outstanding and deep favored by user.And digitalization multifunctional inversion type welding machine then adopt digital control chip control the source of welding current and
Automatic wire feeding device, multiple welding procedures are integrated in one, and the automation journey so that welding is used in the increment realizing one-machine-multi-function
Degree is improved.
However, for the welding supply of existing digitalization multifunctional inversion type welding machine, being used mostly absolutely urban network electricity
Net power supply or generator powered, supply voltage is higher.Due to output is that the galvanic magnitude of voltage of low-voltage, high-current and electrical network (are sent out
Motor) magnitude of voltage great disparity larger, for reaching electric insulation and safety requirements, primary side rectifying part and the operator such as dielectric strength
The secondary side welding circuit of directly contact partly can must have good being dielectrically separated from, its structure must take into enough insulation away from
From with using suitable insulating materials.Cause complete machine structure excessively compact, volume weight is difficult to reduce further.Meanwhile,
The cooling performance of power switching device device for cooling is also because of the insulation of primary side high-pressure section and secondary side welding circuit low-pressure section
Require and be greatly affected, directly result in welding supply cyclic duration factor and decline, and under power output capacity
Fall.
In addition, welder must have enough control accuracies and control speed, control the transition behavior of each molten drop,
Practical application request could be met.However, in the existing plasma cutting inverter powered using urban network electricity net, its inverter circuit inversion
More than switching frequency difficult to reach 100KHz.And switching device turns on and off loss height, the electromagnetic disturbance that switching device causes
Signal amplitude is big.Dynamically loud speed answers the source of welding current fast, that control accuracy is high therefore to need a kind of configuration badly.
Engine welder is the dual-purpose machine of electricity generation and electric welding or Electricity generating welder again, can use as generator, can also simultaneously
Use for electric welding machine, present engine welder structure is excitation generator, and generate electricity with welding machine with a loop.Existing skill
In art, generator sends electric current by internal combustion engine, external-combustion engine and hydraulic turbine engine rotation and directly drives welding machine to be operated.
It leads to generator output to be exported by electric welding machine is affected, and function of supplying power is restricted it is impossible to meet firm power
Power supply, range of application is narrower.Magneto, with permanent magnet excitation, eliminates the excitation consumption of electric excitation generator.However,
After magneto is made, air-gap field adjusts difficulty, and this becomes it and is applied to the inherent defect of electricity generation system.
Content of the invention
For defect present in prior art, the purpose of this utility model is to provide a kind of permanent-magnetic variable-frequency engine weldering
Machine.
A kind of permanent-magnetic variable-frequency engine welder is provided, including stator punching, magneto and permanent magnetism electric welding machine, described fixed
Sub- punching is provided with groove I and groove II, and described magneto is independently arranged with the circuit of described permanent magnetism electric welding machine；
Wherein, in described groove I, it is wound with same-phase three road three-phase and four-line winding coil, form three magnetoes
It is wound with two-way three-phase and four-line winding coil, composition the first permanent magnetism electric welding in coil, and the described groove II adjacent with described groove I
Machine coil and the second permanent magnetism electric welding machine coil, give welding A handle and welding B respectively power supply.
Further, to welding A as follows for the circuit of power supply：
First permanent magnetism electric welding machine coil output first via alternating current, described first via alternating current is through the first voltage stabilizing rectified current
After the rectification of road, entering the first DC filtering circuit filtering becomes direct current of voltage regulation, by constant voltage DC electricity output to A buck chopper
After welding system, then the electric current after conversion is exported to welding A handle；
To welding B as follows for the circuit of power supply：
Second permanent magnetism electric welding machine coil exports the second road alternating current, and described second road alternating current is through the second voltage stabilizing rectified current
After the rectification of road, entering the second DC filtering circuit filtering becomes direct current of voltage regulation, by constant voltage DC electricity output to A buck chopper
After welding system, then the electric current after conversion is exported to welding B handle.
The utility model permanent magnetism electric welding machine is powered and magneto insulation is that stator by engine welder completes, and saves
Go intermediate-frequency transformer link；Permanent magnetism electric welding machine and magneto are combined into a compact entirety, to reach the compact source of welding current
The structure of device, reduce its volume and the purpose mitigating its weight.
Further, described A includes buck chopper welding system：First BUCK translation circuit, the first sample circuit, first
Freewheeling circuit and the first filter circuit, direct current of voltage regulation enters a BUCK translation circuit buck chopper, by the first afterflow electricity
Road and the first filter circuit, and pass through the first sample circuit collection voltages current data, then will be defeated for the two-phase direct current after processing
Go out to welding A handle；
Described B includes buck chopper welding system：2nd BUCK translation circuit, the second sample circuit, the second afterflow electricity
Road and the second filter circuit, direct current of voltage regulation enters the 2nd BUCK translation circuit buck chopper, by the second freewheeling circuit and the
Two filter circuits, and pass through the second sample circuit collection voltages current data, then by the two-phase direct current electricity output after processing to weldering
Connect B handle.
Further, in A in buck chopper welding system, a described BUCK translation circuit includes two IGBT, and
It is provided with reactor, described first filter circuit includes three filter reactors before each IGBT；
In B in buck chopper welding system, described 2nd BUCK translation circuit includes two IGBT, and in each IGBT
Before be provided with reactor, described second filter circuit includes three filter reactors.
Described A of the present utility model adopts the buck chopper pulsewidth modulation of Digital Control inverse buck chopper welding system
Become circuit topographical form.It makes permanent magnetism switch for electric welder frequency be improved, and meets high accuracy, high dynamic response speed
The requirement of degree digitlization precise controlling.
Further, in A in buck chopper welding system, described first freewheeling circuit includes：
The fly-wheel diode A I in parallel with a BUCK translation circuit and fly-wheel diode A II, described fly-wheel diode A I
It is in parallel with accumulator A I；Described accumulator A I includes resistance A I and electric capacity A I；Described fly-wheel diode A II and energy storage electricity
Road A II is in parallel；Described accumulator A II includes resistance A II and electric capacity A II；
In B in buck chopper welding system, described second freewheeling circuit includes：
The fly-wheel diode B I in parallel with the 2nd BUCK translation circuit and fly-wheel diode B II, described fly-wheel diode B I
It is in parallel with accumulator B I；Described accumulator B I includes resistance B I and electric capacity B I；Described fly-wheel diode B II and energy storage electricity
Road B II is in parallel；Described accumulator B II includes resistance B II and electric capacity B II.
Further, the first sample circuit includes the first current sensor and first voltage ultramagnifier；Second sample circuit bag
Include the second current sensor and second voltage ultramagnifier.
Further, the permanent magnet in described engine welder adopts 18 grades；
The rotor of described engine welder includes the silicon steel sheet being overlapped mutually, and is located at 18 NS poles between silicon steel sheet
The permanent magnet being arranged alternately.
Further, the first three phase full bridge half control circuit includes rectifier A I, rectifier A II and rectifier A III, first
IGBT, a MOSFET, the first reactor and first resistor；Second three phase full bridge half control circuit includes rectifier B I, rectifier B
II and rectifier B III, the 2nd IGBT, the 2nd MOSFET, the second reactor and second resistance.
Preferably, the first filter circuit of pressure-stabilizing includes the first filter capacitor；Second filter circuit of pressure-stabilizing includes the second filtering
Electric capacity.
Further, an IGBT is in parallel with a MOSFET, and is connected with rectifier A I, separately in one end of a described IGBT
Connected with rectifier A II in one end；First MOSFET is connected with first resistor, the first reactor and rectifier A III, and filters with first
Ripple electric capacity is in parallel；2nd IGBT is in parallel with the 2nd MOSFET, and connected with rectifier B I in one end of described 2nd IGBT, the other end
Connect with rectifier B II；2nd MOSFET is connected with second resistance, the second reactor and rectifier B III, and with the second filtered electrical
Hold in parallel.
Preferably, described magneto power output is 20kW.
The resultant effect that the utility model is brought includes：
1) generator and the circuit of electric welding machine are respectively provided with, and are independent of each other.In the electric welding machine course of work, generator can be defeated
Go out to stablize alternating current, power as single accessory power supply, drive angle grinder, power drill, light fixture or other match appliances.
2) welder can efficiently control the transition behavior of each molten drop.The source of welding current of the utility model electric welding machine
Device has higher inverse switch frequency.
3) the utility model is powered using low-voltage dc power supply, and combines low-voltage and high-current permanent magnetic engine and permanent magnetism
Electric welding machine.Its insulation is by stator winding, welding and supplementary AC to be insulated, and saves transformation and go to portion in whole circuit structure
Point, insulation is reliable.
4) the utility model has higher dynamic responding speed and higher current/voltage control accuracy；And make automatically
Wire-feeding part has higher rotating stability and rotating speed response speed it is ensured that the stable speed of recovery after being subject to external interference,
Keep welding stable.Can stablize, weld various non-ferrous metals reliably and at high speed, be suitable for various different materials and different-thickness
Sheet material, realize different overlapping modes and the welding of different weld seams.
5) adopt the generator of 18 pole permanent magnetic multi-poles, structure is simple, small volume, efficiency high, reliable, and improves
The leakage magnetic flux problem of air-gap field, power density is big.
6) the utility model can reduce the rotating speed of the engine of energy supply, adjusts with output generator watt level, and then
Reduce energy consumption, reduce noise, reduce mechanical wear and the discharge of carbon dioxide.
7) the utility model is capable of general acidic welding rod welding function, low hydrogen type basic electrode/Cellulose-Congo red medium weldering
Connection function, LIFT TIG weld function, carbon dioxide gas arc welding connection function, pulsed MIG welding function and dipulse MIG
Welding function.
Brief description
Fig. 1 is the circuit structure simplified schematic diagram of the utility model embodiment engine welder.
Fig. 2 is the electrical block diagram of permanent magnetism electric welding machine in the utility model embodiment engine welder.
Fig. 3 is that the A in the permanent magnetism electric welding machine of the utility model embodiment engine welder is electric buck chopper welding system
Line structure schematic diagram.
Fig. 4 is that the utility model embodiment engine welder controls and circuit FB(flow block).
Specific embodiment
The utility model is further explained with explanation it should be appreciated that this practicality with reference to specific embodiment and accompanying drawing
New scope not limited to this.
Embodiment
A kind of permanent-magnetic variable-frequency engine welder, as shown in figure 1, include stator punching, magneto 2 and permanent magnetism electric welding machine
1, described stator punching is provided with groove I and groove II, and the circuit of described magneto 2 and described permanent magnetism electric welding machine 1 is independently
Setting；
Wherein, in described groove I, it is wound with same-phase three road three-phase and four-line winding coil, form three magnetoes
It is wound with two-way three-phase and four-line winding coil in coil, and the groove II adjacent with described groove I, form the first permanent magnetism electric welding machine line
Circle 11 and the second permanent magnetism electric welding machine coil 12, give welding A handle and welding B respectively power supply.
Magneto is respectively provided with the circuit of permanent magnetism electric welding machine, is independent of each other.In the electric welding machine course of work, generate electricity
Machine is exportable to stablize alternating current, powers as single accessory power supply, drives angle grinder, power drill, light fixture or other supporting electricity
Device.
As shown in Fig. 2 to welding A as follows for the circuit of power supply：
First permanent magnetism electric welding machine coil 21 exports first via alternating current, and described first via alternating current is through the first voltage stabilizing rectification
After circuit 31 rectification, entering the first DC filtering circuit 41 filtering becomes direct current of voltage regulation, by constant voltage DC electricity output to A fall
After pressure copped wave welding system 51, then the electric current after conversion is exported to welding A handle.
To welding B as follows for the circuit of power supply：
Second permanent magnetism electric welding machine coil 22 exports the second road alternating current, and described second road alternating current is through the second voltage stabilizing rectification
After circuit 32 rectification, entering the second DC filtering circuit 42 filtering becomes direct current of voltage regulation, by constant voltage DC electricity output to A fall
After pressure copped wave welding system 52, then the electric current after conversion is exported to welding B handle.
As shown in figure 3, described A includes buck chopper welding system：First BUCK translation circuit 61, first is sampled electric
Road, the first freewheeling circuit 71 and the first filter circuit, direct current of voltage regulation enters a BUCK translation circuit 61 buck chopper, by
First freewheeling circuit 71 and the first filter circuit, and pass through the first sample circuit collection voltages current data, then will process after
Two-phase direct current electricity output gives welding A handle；
Described B includes buck chopper welding system：2nd BUCK translation circuit, the second sample circuit, the second afterflow electricity
Road and the second filter circuit, direct current of voltage regulation enters the 2nd BUCK translation circuit buck chopper, by the second freewheeling circuit and the
Two filter circuits, and pass through the second sample circuit collection voltages current data, then by the two-phase direct current electricity output after processing to weldering
Connect B handle.
In A in buck chopper welding system, a described BUCK translation circuit includes two IGBT, and in each IGBT
Before be provided with reactor 81, described first filter circuit includes three filter reactors 91；
In B in buck chopper welding system, described 2nd BUCK translation circuit includes two IGBT, and in each IGBT
Before be provided with reactor, described second filter circuit includes three filter reactors.
The described A of the present embodiment adopts the buck chopper pulsewidth modulation of Digital Control inverse buck chopper welding system 51
Become circuit topographical form.It makes the switching frequency of permanent magnetism electric welding machine 1 be improved, and meets high accuracy, and high dynamic is rung
Answer the requirement of speed digitlization precise controlling.
The present embodiment permanent magnetism electric welding machine 1 power supply and magneto 2 insulation are that the stator by engine welder completes, and save
Go intermediate-frequency transformer link；Permanent magnetism electric welding machine 1 and magneto 2-in-1 be a compact entirety, with reach compact welding electricity
The structure of source device, reduce its volume and the purpose mitigating its weight.
In A in buck chopper welding system 51, described first freewheeling circuit 71 includes：
The fly-wheel diode A I 611 in parallel with a BUCK translation circuit 61 and fly-wheel diode A II 612, described afterflow
Diode A I 711 is in parallel with accumulator A I 712；Described accumulator A I 712 includes resistance A I and electric capacity A I；Described afterflow
Diode A II 713 is in parallel with accumulator A II 714；Described accumulator A II 714 includes resistance A II and electric capacity A II；
In B in buck chopper welding system 52, described second freewheeling circuit includes：
The fly-wheel diode B I in parallel with the 2nd BUCK translation circuit and fly-wheel diode B II, described fly-wheel diode B I
It is in parallel with accumulator B I；Described accumulator B I includes resistance B I and electric capacity B I；Described fly-wheel diode B II and energy storage electricity
Road B II is in parallel；Described accumulator B II includes resistance B II and electric capacity B II.
First sample circuit includes the first current sensor 101 and first voltage ultramagnifier 102；Second sample circuit includes
Second current sensor and second voltage ultramagnifier.
Permanent magnet in described engine welder adopts 18 grades.
The rotor of this engine welder includes the silicon steel sheet being overlapped mutually, and 18 NS poles being located between silicon steel sheet are handed over
Permanent magnet for setting.The present embodiment adopts the generator of 18 pole permanent magnetic multi-poles, and structure is simple, small volume, efficiency high, operation can
Lean on.
First three phase full bridge half control circuit 31 includes rectifier A I 311, rectifier A II 312 and rectifier A III 313；Second
Three phase full bridge half control circuit 32 includes rectifier B I 321, rectifier B II 322 and rectifier B III 323.
First three phase full bridge half control circuit 31 includes rectifier A I 311, rectifier A II 312 and rectifier A III 313, first
IGBT314, a MOSFET315, the first reactor 316 and first resistor 317；Second three phase full bridge half control circuit 32 includes whole
Stream device B I 321, rectifier B II 322 and rectifier B III 323, the 2nd IGBT324, the 2nd MOSFET325, the second reactor 326
With second resistance 327；
First filter circuit of pressure-stabilizing includes the first filter capacitor 411；Second filter circuit of pressure-stabilizing includes the second filter capacitor
421.
First IGBT314 is in parallel with a MOSFET315, and one end of a described IGBT314 is gone here and there with rectifier A I 311
Connection, the other end is connected with rectifier A II 312；First MOSFET315 and first resistor 317, the first reactor 316 and rectifier A
III 313 series connection, and in parallel with the first filter capacitor 411；2nd IGBT324 is in parallel with the 2nd MOSFET325, and described second
Connected with rectifier B I 321 in one end of IGBT324, the other end is connected with rectifier B II 322；2nd MOSFET325 and second electricity
Resistance the 327, second reactor 326 and rectifier B III 323 series connection, and in parallel with the second filter capacitor 421.
The present embodiment, using digital BUCK (buck chopper) formula pulse modulation technology, is made an uproar to effectively suppressing side harmonic current
Sound, improves the leakage magnetic flux problem of air-gap field, and power density is big.
Described magneto 2 power output is 20kW.
As shown in figure 4, the utility model can reduce the rotating speed of the engine of energy supply when using, with output generator power
Size adjustment, and then reduce energy consumption, reduce noise, reduce mechanical wear and the discharge of carbon dioxide.
The output voltage of three phase full bridge half control circuit generator coil and electric welding machine coil in the generator slow-speed of revolution reduces,
The PWM standard-sized sheet of IGBT, rectified three-phase circuit exports for full-wave rectification；During high rotating speed, generator output voltage raises, the PWM of IGBT
Turn off, rectified three-phase circuit exports for halfwave rectifier；Control DSP high-speed figure chip, by voltage feedback signal, adjust PWM
Dutycycle, controls output DC voltage stability.
Although the utility model is described in detail, it will be understood by those skilled in the art that in the utility model spirit
Will be apparent from the modification in scope.However, it should be understood that each side of the utility model record, different tool
The each several part of body embodiment and the various features enumerated can be combined or all or part of exchange.Concrete in above-mentioned each
In embodiment, those can suitably be combined with other embodiment with reference to the embodiment of another embodiment, this
It is will be to understand by those skilled in the art.Additionally, it will be understood to those of skill in the art that description above is only example
Mode it is no intended to limit the utility model.
Claims (10)
1. a kind of permanent-magnetic variable-frequency engine welder is it is characterised in that include stator punching, magneto and permanent magnetism electric welding machine,
Described stator punching is provided with groove I and groove II, and described magneto is independently arranged with the circuit of described permanent magnetism electric welding machine；
Wherein, in described groove I, it is wound with same-phase three road three-phase and four-line winding coil, form three magneto coils,
And in the described groove II adjacent with described groove I, it is wound with two-way three-phase and four-line winding coil, form the first permanent magnetism electric welding machine line
Circle and the second permanent magnetism electric welding machine coil, give welding A handle and welding B respectively power supply.
2. permanent-magnetic variable-frequency engine welder according to claim 1 it is characterised in that
To welding A as follows for the circuit of power supply：
First permanent magnetism electric welding machine coil output first via alternating current, described first via alternating current is whole through the first voltage stabilizing rectification circuit
After stream, entering the first DC filtering circuit filtering becomes direct current of voltage regulation, and constant voltage DC electricity output is welded buck chopper to A
After system, then the electric current after conversion is exported to welding A handle；
To welding B as follows for the circuit of power supply：
Second permanent magnetism electric welding machine coil exports the second road alternating current, and described second road alternating current is whole through the second voltage stabilizing rectification circuit
After stream, entering the second DC filtering circuit filtering becomes direct current of voltage regulation, and constant voltage DC electricity output is welded buck chopper to A
After system, then the electric current after conversion is exported to welding B handle.
3. permanent-magnetic variable-frequency engine welder according to claim 2 it is characterised in that
Described A includes buck chopper welding system：First BUCK translation circuit, the first sample circuit, the first freewheeling circuit and
First filter circuit, direct current of voltage regulation enters a BUCK translation circuit buck chopper, by the first freewheeling circuit and the first filter
Wave circuit, and pass through the first sample circuit collection voltages current data, then by the two-phase direct current electricity output after processing to welding A
?；
Described B includes buck chopper welding system：2nd BUCK translation circuit, the second sample circuit, the second freewheeling circuit and
Second filter circuit, direct current of voltage regulation enters the 2nd BUCK translation circuit buck chopper, by the second freewheeling circuit and the second filter
Wave circuit, and pass through the second sample circuit collection voltages current data, then by the two-phase direct current electricity output after processing to welding B
?.
4. permanent-magnetic variable-frequency engine welder according to claim 3 it is characterised in that
In A in buck chopper welding system, a described BUCK translation circuit includes two IGBT, and sets before each IGBT
It is equipped with reactor, described first filter circuit includes three filter reactors；
In B in buck chopper welding system, described 2nd BUCK translation circuit includes two IGBT, and sets before each IGBT
It is equipped with reactor, described second filter circuit includes three filter reactors.
5. permanent-magnetic variable-frequency engine welder according to claim 3 it is characterised in that
In A in buck chopper welding system, described first freewheeling circuit includes：
The fly-wheel diode A I in parallel with a BUCK translation circuit and fly-wheel diode A II, described fly-wheel diode A I and storage
Can circuit A I be in parallel；Described accumulator A I includes resistance A I and electric capacity A I；Described fly-wheel diode A II and accumulator A
II is in parallel；Described accumulator A II includes resistance A II and electric capacity A II；
In B in buck chopper welding system, described second freewheeling circuit includes：
The fly-wheel diode B I in parallel with the 2nd BUCK translation circuit and fly-wheel diode B II, described fly-wheel diode B I and storage
Can circuit B I be in parallel；Described accumulator B I includes resistance B I and electric capacity B I；Described fly-wheel diode B II and accumulator B
II is in parallel；Described accumulator B II includes resistance B II and electric capacity B II.
6. permanent-magnetic variable-frequency engine welder according to claim 3 is it is characterised in that the first sample circuit includes the first electricity
Flow sensor and first voltage ultramagnifier；Second sample circuit includes the second current sensor and second voltage ultramagnifier.
7. permanent-magnetic variable-frequency engine welder according to claim 2 it is characterised in that
Permanent magnet in described engine welder adopts 18 grades；
The rotor of described engine welder includes the silicon steel sheet being overlapped mutually, and 18 NS poles being located between silicon steel sheet replace
The permanent magnet of setting.
8. permanent-magnetic variable-frequency engine welder according to claim 2 it is characterised in that
First three phase full bridge half control circuit include rectifier A I, rectifier A II and rectifier A III, an IGBT, first
MOSFET, the first reactor and first resistor；Second three phase full bridge half control circuit includes rectifier B I, rectifier B II and rectification
Device B III, the 2nd IGBT, the 2nd MOSFET, the second reactor and second resistance；
First filter circuit of pressure-stabilizing includes the first filter capacitor；Second filter circuit of pressure-stabilizing includes the second filter capacitor.
9. permanent-magnetic variable-frequency engine welder according to claim 8 it is characterised in that an an IGBT and MOSFET simultaneously
Join, and connected with rectifier A I in one end of a described IGBT, the other end is connected with rectifier A II；First MOSFET and first
Resistance, the first reactor and rectifier A III connect, and in parallel with the first electric capacity；2nd IGBT is in parallel with the 2nd MOSFET, and institute
Connected with rectifier B I in the one end stating the 2nd IGBT, the other end is connected with rectifier B II；2nd MOSFET and second resistance, the
Two reactors and rectifier B III connect, and in parallel with the second electric capacity.
10. permanent-magnetic variable-frequency engine welder according to claim 1 is it is characterised in that described magneto output work
Rate is 20kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863322.3U CN205950065U (en) | 2016-08-10 | 2016-08-10 | Permanent magnetism frequency conversion engine welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863322.3U CN205950065U (en) | 2016-08-10 | 2016-08-10 | Permanent magnetism frequency conversion engine welding machine |
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| CN205950065U true CN205950065U (en) | 2017-02-15 |
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ID=57974825
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112213A (en) * | 2016-08-10 | 2016-11-16 | 电王精密电器(北京)有限公司 | A kind of permanent-magnetic variable-frequency engine welder |
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2016
- 2016-08-10 CN CN201620863322.3U patent/CN205950065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112213A (en) * | 2016-08-10 | 2016-11-16 | 电王精密电器(北京)有限公司 | A kind of permanent-magnetic variable-frequency engine welder |
| CN106112213B (en) * | 2016-08-10 | 2018-01-09 | 电王精密电器(北京)有限公司 | A kind of permanent-magnetic variable-frequency engine welder |
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