CN108372354A - A kind of novel pulse direct current source of welding current - Google Patents
A kind of novel pulse direct current source of welding current Download PDFInfo
- Publication number
- CN108372354A CN108372354A CN201810109850.3A CN201810109850A CN108372354A CN 108372354 A CN108372354 A CN 108372354A CN 201810109850 A CN201810109850 A CN 201810109850A CN 108372354 A CN108372354 A CN 108372354A
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- Prior art keywords
- igbt
- circuit
- circuits
- welding
- control
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/241—Electric supplies
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/26—Storage discharge welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The present invention relates to welding machine technical fields, especially a kind of novel pulse direct current source of welding current, it includes RC three-phase input anti-surge protection circuits, three-phase half-controlled rectifier bridge, DC_LINK filters tank circuit, IGBT charge/discharge control circuits, discharge current detection plate, welding transformer, IGBT drive amplifications circuit, DC DC switching power circuits, IGBT drive circuit and half-controlled bridge SCR control plate, master board and touch screen, realize closed-loop control, ensure the setting value of welding current, actual value is consistent with value of feedback three, using IGBT, since the characteristic of IGBT determines, as long as in G the and E control terminals of IGBT, the negative voltage of 8V or so is added, IGBT can be turned off reliably；The capacitor group of the present invention is intended only as DC LINK supporting roles, unless just compensated into electric discharge transformer the case where input power wretched insufficiency, therefore substantially without energy loss.
Description
Technical field
The present invention relates to welding machine technical field, especially a kind of novel pulse direct current source of welding current.
Background technology
1, the prior art can only control welding current by the way that voltage on capacitor is arranged, and actual welding size of current is not
Know；The size of actual welding electric current can only be known by third party's detection device；
2, the prior art is turned off in shutdown discharging thyristor (SCR) by capacitance-resistance oscillating circuit, if parameter
Select improper or device aging, it is likely that guiding discharge silicon-controlled (SCR) shutdown failure causes charge circuit short-circuit, burns
Charging transformer or commutating circuit；
3, the prior art is in capacitor group charging process, generally by charging resistor or itself circuit to capacitor
Group charging；In this way, according to Circuit theory, 50% energy can be lost in charging process；
4, the condenser type percussion welder of the prior art, by discharging thyristor to welding transformer discharge；Due to capacitor
Group charging voltage belongs to direct current, therefore it can only be that no current flows through or give silicon-controlled back-pressure to cause discharging thyristor, can be turned off
Discharging thyristor；Cause weld interval that cannot control；
5, the condenser type percussion welder of the prior art, it is necessary to by that can be welded to the charging process of capacitor group,
If undercharge overcharges, welding quality has very big influence and charging process must have certain duration, to
Reduce working efficiency.
Invention content
In view of the deficiencies of the prior art, present invention offer is a kind of carrying out closed-loop control using sensor to output current, real
Occurrence grade welding current current constant control；Weld interval is controllable；Major loop is not necessarily to charging resistor current limliting, saves energy consumption；Without charging
It waits for, improves working efficiency；The DC welder power supply that main circuit is turned off without external other breaking circuit.
The technical scheme is that：
A kind of novel pulse direct current source of welding current, it is characterised in that：It includes RC three-phase inputs anti-surge protection circuit, three
Phase half control rectifier bridge, DC_LINK filtering tank circuit, IGBT charge/discharge control circuits, discharge current detection plate, welding transformer,
IGBT drive amplifications circuit, DC-DC switching power circuits, IGBT drive circuit and half-controlled bridge SCR control plate, master board
And touch screen, work step are：
1, RC three-phase input anti-surge protection circuit is input to three-phase half-controlled rectifier bridge and carries out rectification；
2, three-phase half-controlled rectifier bridge utilizes three rectifier diodes and three silicon-controlled composition commutating circuits, and alternating current is become
At direct current, DC_LINK filtering tank circuit chargings are given, in initial charge, since DC_LINK filters the capacitance of tank circuit
Device group is in imaginary short state, defeated using Rac resistance and RC three-phases for protective condenser group, charging transformer and commutating circuit
Enter anti-surge protection circuit and carries out current-limiting charge；
When capacitance voltage in 3, DC_LINK filtering tank circuits reaches 200V voltages, DC-DC switching power circuits start
Work；
After the work of 4, DC-DC switching power circuits, control power supply is provided to master board, IGBT drive circuit and half control
Bridge silicon controlled control panel and touch screen；
5, after master board initialization is completed, detection capacitance voltage, heat dissipation plate temperature, transformer temperature and a input letter
Number, if mistake does not occur for various states, to control signal to IGBT drive circuit and half-controlled bridge SCR control plate, enable half
It controls bridge to start to work, at this moment the voltage of capacitor group can range up to 560V voltages；
6, after master board output is ready to complete signal, floor push can be started.
Welding machine works according to setting sequential：Squeeze time → pressing time → weld interval → holds time → stops
Time；And welding current can be modulated according to user demand；For conventional capacitive percussion welder " weld interval "
It is non-adjustable, welding current can only by be arranged capacitance voltage adjust, actual welding electric current can only by third party's detection device into
Row is measured and is learnt.
Wherein, the DC_LINK filtering tank circuit is made of four capacitances and two resistance.
Wherein, the poles G of the metal-oxide-semiconductor in the IGBT charge/discharge control circuits connect IGBT drive amplifications with the poles E by conducting wire
G1-1 the and E1-1 interfaces in circuit, and this two conducting wires make twisted-pair feeder, the twisted-pair feeder periphery is arranged shading ring.
Wherein, the touch screen connects the communication interface of master board by data line.
Beneficial effects of the present invention are：The present invention is (or secondary using the primary current of Hall current sensor detection transformer
Grade electric current), realize closed-loop control.Actual welding electric current can be accurately controlled, ensure the setting value of welding current, actual value and
Value of feedback three is consistent.User can be according to technological requirement, the welding current value that directly setting needs；The present invention uses IGBT,
Since the characteristic of IGBT determines that as long as, in G the and E control terminals of IGBT, the negative voltage of addition -8V or so, IGBT can be reliable
Shutdown；The capacitor group of the present invention is intended only as DC-LINK supporting roles, unless just being mended the case where input power wretched insufficiency
It repays in electric discharge transformer, therefore substantially without energy loss.The present invention discharges to transformer using IGBT, and discharge time is used
Family can be voluntarily arranged according to different technological requirements.The present invention is without charging process, as long as welding sequential is in discharge condition,
IGBT can be opened to be welded.The present invention undoubtedly improves its work effect for existing capacitor energy storage type welding machine
Energy.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention；
Fig. 2 is RC three-phase inputs anti-surge protection circuit in Fig. 1, three-phase half-controlled rectifier bridge, DC_LINK filtering energy storage time
Road, IGBT charge/discharge control circuits, discharge current detection plate, welding transformer, IGBT drive amplifications circuit enlarged diagram；
Fig. 3 is the enlarged diagram of DC-DC switching power circuits in Fig. 1；
Fig. 4 is the enlarged diagram of IGBT drive circuit and half-controlled bridge SCR control plate in Fig. 1；
Fig. 5 is the enlarged diagram of master board in Fig. 1；
Fig. 6 is the connection diagram of touch screen and master board in Fig. 1.
In figure, 1, RC three-phase input anti-surge protection circuits；2, three-phase half-controlled rectifier bridge；3, DC_LINK filters energy storage and returns
Road；4, IGBT charge/discharge control circuits；5, discharge current detection plate；6, welding transformer；7, IGBT drive amplifications circuit；8、DC-
DC switching power circuits；9, IGBT drive circuit and half-controlled bridge SCR control plate；10, master board；11, touch screen.
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of novel pulse direct current source of welding current, it is characterised in that：It includes RC three-phase input Anti-surgings
Protect circuit 1, three-phase half-controlled rectifier bridge 2, DC_LINK filtering tank circuit 3, IGBT charge/discharge control circuits 4, discharge current detection
Plate 5, welding transformer 6, IGBT drive amplifications circuit 7, DC-DC switching power circuits 8, IGBT drive circuit and half-controlled bridge are controllable
Silicon control panel 9, master board 10 and touch screen 11.
Its work step is：
RC three-phase inputs anti-surge protection circuit 1 is input to three-phase half-controlled rectifier bridge 2 and carries out rectification；
Three-phase half-controlled rectifier bridge 2 utilizes three rectifier diodes and three silicon-controlled composition commutating circuits, and alternating current is become
It at direct current, charges to DC_LINK filtering tank circuits 3, in initial charge, since DC_LINK filters the electricity of tank circuit 3
Container group is in imaginary short state, is protective condenser group, charging transformer and commutating circuit, utilizes Rac resistance (Rac) and RC
Three-phase input anti-surge protection circuit 1 carries out current-limiting charge；
When capacitance voltage in DC_LINK filtering tank circuits 3 reaches 200V voltages, DC-DC switching power circuits 8 start
Work；
After DC-DC switching power circuits 8 work, control power supply is provided to master board 10, IGBT drive circuit and half
Control bridge silicon controlled control panel 9 and touch screen 11；
After the initialization of master board 10 is completed, detection capacitance voltage, heat dissipation plate temperature, transformer temperature and a input letter
Number, if mistake does not occur for various states, to control signal to IGBT drive circuit and half-controlled bridge SCR control plate 9, enable
Half-controlled bridge is started to work, and at this moment the voltage of capacitor group can range up to 560V voltages；
After the output of master board 10 is ready to complete signal, floor push can be started.
The DC_LINK filtering tank circuit 3 is made of four capacitances and two resistance.
The poles G of metal-oxide-semiconductor in the IGBT charge/discharge control circuits 4 connect IGBT drive amplifications circuit 7 with the poles E by conducting wire
G1-1 and E1-1 interfaces, and this two conducting wires make twisted-pair feeder, and the twisted-pair feeder periphery is arranged shading ring.
The touch screen 11 connects the communication interface of master board 10 by data line.
The above embodiments and description only illustrate the principle of the present invention and most preferred embodiment, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.
Claims (4)
1. a kind of novel pulse direct current source of welding current, it is characterised in that：It includes RC three-phase inputs anti-surge protection circuit, three-phase
Half control rectifier bridge, DC_LINK filtering tank circuit, IGBT charge/discharge control circuits, discharge current detection plate, welding transformer,
IGBT drive amplifications circuit, DC-DC switching power circuits, IGBT drive circuit and half-controlled bridge SCR control plate, master board
And touch screen, work step are：
RC three-phase input anti-surge protection circuits are input to three-phase half-controlled rectifier bridge and carry out rectification；
Three-phase half-controlled rectifier bridge utilizes three rectifier diodes and three silicon-controlled composition commutating circuits, and alternating current is become direct current
Electricity gives DC_LINK filtering tank circuit chargings, in initial charge, at the capacitor group of DC_LINK filtering tank circuits
In imaginary short state, it is protective condenser group, charging transformer and commutating circuit, utilizes Rac resistance and RC three-phase input wave resistances
It gushes protection circuit and carries out current-limiting charge；
When capacitance voltage in DC_LINK filtering tank circuits reaches 200V voltages, DC-DC switching power circuits are started to work；
After the work of DC-DC switching power circuits, it is controllable to master board, IGBT drive circuit and half-controlled bridge to provide control power supply
Silicon control panel and touch screen；
After master board initialization is completed, detection capacitance voltage, heat dissipation plate temperature, transformer temperature and a input signal, such as
Mistake does not occur for the various states of fruit, to control signal to IGBT drive circuit and half-controlled bridge SCR control plate, enables half-controlled bridge
It starts to work, at this moment the voltage of capacitor group can range up to 560V voltages；
After master board output is ready to complete signal, floor push can be started.
2. the novel pulse direct current source of welding current according to claim 1, it is characterised in that：The DC_LINK filters energy storage
Circuit is made of four capacitances and two resistance.
3. the novel pulse direct current source of welding current according to claim 2, it is characterised in that：The IGBT charge/discharge control circuits
In the poles G of metal-oxide-semiconductor G1-1 the and E1-1 interfaces in IGBT drive amplifications circuit, and this two conducting wires are connected by conducting wire with the poles E
Twisted-pair feeder is made, the twisted-pair feeder periphery is arranged shading ring.
4. the novel pulse direct current source of welding current according to claim 3, it is characterised in that：The touch screen passes through data line
Connect the communication interface of master board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109850.3A CN108372354A (en) | 2018-02-05 | 2018-02-05 | A kind of novel pulse direct current source of welding current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109850.3A CN108372354A (en) | 2018-02-05 | 2018-02-05 | A kind of novel pulse direct current source of welding current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108372354A true CN108372354A (en) | 2018-08-07 |
Family
ID=63017294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810109850.3A Pending CN108372354A (en) | 2018-02-05 | 2018-02-05 | A kind of novel pulse direct current source of welding current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108372354A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907427A (en) * | 2018-09-18 | 2018-11-30 | 优尼恩电机（大连）有限公司 | Multiple layer metal welder and its welding method |
| CN110239104A (en) * | 2019-05-05 | 2019-09-17 | 诸暨市逍遥管道科技有限公司 | The method that DC inversion electro-fusion welding machine output voltage compensates automatically |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410214A (en) * | 2001-09-25 | 2003-04-16 | 哈尔滨工业大学 | No secondary commutating D.C. resistance welding machine and its control method |
| US20080173626A1 (en) * | 2007-01-24 | 2008-07-24 | Kevin Gunning | Capacitive discharge welding power supply and capacitive discharge welder using the same |
| CN101758328A (en) * | 2008-11-10 | 2010-06-30 | 戴建智 | Welding machine discharge loop |
| CN102259233A (en) * | 2011-07-29 | 2011-11-30 | 广州市精源电子设备有限公司 | Intermediate-frequency inverter-resistance spot welding power-supply system |
| CN102350581A (en) * | 2011-09-26 | 2012-02-15 | 广州（从化）亨龙机电制造实业有限公司 | Medium-voltage capacitive energy storage welding machine |
| CN202388118U (en) * | 2011-12-30 | 2012-08-22 | 沈阳中科机械电子工程有限公司 | Intermediate frequency inverter resistance welding machine |
| CN103008865A (en) * | 2012-12-31 | 2013-04-03 | 天津商科数控设备有限公司 | Process method for pulse width-adjustable AC (Alternating Current)-DC (Direct Current) inverter resistance welding |
| CN105689880A (en) * | 2016-04-22 | 2016-06-22 | 中山市微焊电子设备有限公司 | Spot welder pulse output control circuit adopting transformer to output direct current pulses |
-
2018
- 2018-02-05 CN CN201810109850.3A patent/CN108372354A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410214A (en) * | 2001-09-25 | 2003-04-16 | 哈尔滨工业大学 | No secondary commutating D.C. resistance welding machine and its control method |
| US20080173626A1 (en) * | 2007-01-24 | 2008-07-24 | Kevin Gunning | Capacitive discharge welding power supply and capacitive discharge welder using the same |
| CN101758328A (en) * | 2008-11-10 | 2010-06-30 | 戴建智 | Welding machine discharge loop |
| CN102259233A (en) * | 2011-07-29 | 2011-11-30 | 广州市精源电子设备有限公司 | Intermediate-frequency inverter-resistance spot welding power-supply system |
| CN102350581A (en) * | 2011-09-26 | 2012-02-15 | 广州（从化）亨龙机电制造实业有限公司 | Medium-voltage capacitive energy storage welding machine |
| CN202388118U (en) * | 2011-12-30 | 2012-08-22 | 沈阳中科机械电子工程有限公司 | Intermediate frequency inverter resistance welding machine |
| CN103008865A (en) * | 2012-12-31 | 2013-04-03 | 天津商科数控设备有限公司 | Process method for pulse width-adjustable AC (Alternating Current)-DC (Direct Current) inverter resistance welding |
| CN105689880A (en) * | 2016-04-22 | 2016-06-22 | 中山市微焊电子设备有限公司 | Spot welder pulse output control circuit adopting transformer to output direct current pulses |
Non-Patent Citations (3)
| Title |
|---|
| 冀殿英 等: "直流脉冲点焊机微机控制箱的研究", 《电焊机》 * |
| 冀殿英等: "直流脉冲点焊机微机控制箱的研究 ", 《电焊机》 * |
| 黄稳康，张健: "直流脉冲点焊机单片机控制系统 ", 《电力电子技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907427A (en) * | 2018-09-18 | 2018-11-30 | 优尼恩电机（大连）有限公司 | Multiple layer metal welder and its welding method |
| CN110239104A (en) * | 2019-05-05 | 2019-09-17 | 诸暨市逍遥管道科技有限公司 | The method that DC inversion electro-fusion welding machine output voltage compensates automatically |
| CN110239104B (en) * | 2019-05-05 | 2021-08-27 | 诸暨市逍遥管道科技有限公司 | Method for automatically compensating output voltage of direct current inversion electric fusion welding machine |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180807 |