CN100368134C - Digital wire feeding system - Google Patents
Digital wire feeding system Download PDFInfo
- Publication number
- CN100368134C CN100368134C CNB2004100174692A CN200410017469A CN100368134C CN 100368134 C CN100368134 C CN 100368134C CN B2004100174692 A CNB2004100174692 A CN B2004100174692A CN 200410017469 A CN200410017469 A CN 200410017469A CN 100368134 C CN100368134 C CN 100368134C
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- Prior art keywords
- wire feed
- pulse width
- digitlization
- voltage
- wire feeding
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Abstract
The present invention provides a digital wire feeding system, which comprises a pulse circuit with high frequency modulation. Signals for setting wire feeding speed are loaded on the collector terminal of an MOSFET transistor (W1) through one end of a socket (VGD); when a welding stating signal is effective, the gate terminal of an MOSFET transistor (T1) has high level which can switch on an MOSFET transistor (T2); the signals for setting wire feeding speed enter the control terminal of a pulse width modulating chip (U10), so that the pulse width modulating chip (U10) outputs pulses which can switch on the MOSFET transistor (T2), and voltage is loaded on the socket of an engine to power a wire feeding motor to rotate. The digital wire feeding system can ensure the stability of wire feed, and can meet requirements in the process of welding by using uniform speed adjustment.
Description
Technical field
The present invention relates to the wire feed system of welding machine, relate in particular to a kind of digitized wire feed system.
Background technology
The governing system of wire feed motor generally all adopts the SCR-M system in the welder system.Its main circuit employing MOSFET is single-ended as switching tube, L, C, D Switching Power Supply are made the power supply of armature group, because the control cycle of SCR is long, cause the response speed of system slow, when line voltage fluctuates in a big way, compensation ability is relatively poor, thereby influences the stability of wire feed, causes the fluctuation of welding conditions and welding quality.Moreover general SCR-M governing system speed ratio be difficult to surpass 10, thereby makes and be difficult to take into account crin and filament with a kind of wire feed system, has so just limited the electric current adjustable range of welding machine, correspondingly also just makes the adaptability of welding machine be restricted.In addition, the noncompensable situation of voltage when this system does not consider that the wire feed line is long in the welding process can be restricted, same when reality is used, this system function of not bringing to a halt, and this has improved the fault rate in the welding process.
Summary of the invention
Technical problem to be solved by this invention provides a kind of digitlization wire feed system, the stability of the guaranteed wire feed of its energy, and evenly the welding process needs are satisfied in speed governing, overcome the critical defect of conventional SCR-M wire feed system.
The present invention has adopted following technical proposals: a kind of digitlization wire feed system is provided, comprise the high frequency modulated impulse circuit, the given signal of wire feed rate is added to the collector terminal of MOSFET pipe W1 by the end of socket VGD, when welding commencing signal SW is effective, the gate pole of MOSFET pipe T1 has high level to make MOSFET manage the T2 conducting, the given signal of wire feed enters into the control end of pulse width modulating chip U10, this makes pulse width modulating chip U10 export pulse, this pulse makes MOSFET manage the T2 conducting, voltage is added on the engine socket, makes wire feeding motor add electric operation.
The wire feeding motor governing system adopts PWM chip SG3524, switch mosfet pipe and rectifier bridge to form the power supply of armature winding.By regulating given wire feed rate signal, make the pulse of SG3524 output distinct pulse widths, the ON time of switch mosfet pipe is also just different, thereby plays the effect of speed governing.Therefore the present invention can guarantee the stability of wire feed, and evenly the welding process needs are satisfied in speed governing.
Description of drawings
Fig. 1 is the circuit theory diagrams of the digitlization wire feed system of invention.
Fig. 2 is the circuit diagram of circuit of bringing to a halt.
Fig. 3 is the circuit diagram that wire feed promotes circuit.
The specific embodiment
As shown in Figure 1: digitlization wire feed system of the present invention comprises: high frequency modulated impulse circuit, the circuit of bringing to a halt, wire feed system promote circuit, below in conjunction with circuit diagram operation principle are described:
The given signal of wire feed rate 2 ends given by the potentiometer on the wire-feed motor and by socket VGD are added to the collector terminal of MOSFET pipe W1, when welding commencing signal SW is effective (high level), the gate pole of MOSFET pipe T1 has high level to make MOSFET manage the T2 conducting, the VGD signal enters into the control end of pulse width modulating chip U10, this makes 12,13 pin of pulse width modulating chip U10 export pulse, this pulse makes MOSFET manage the T2 conducting, 24V voltage is added on engine (MOTOR) socket, make wire feeding motor add electric operation, this is the course of work of impulse circuit.W1 is IRF640 at the pipe of the MOSFET described in this specific embodiment, and described MOSFET pipe T2 is MTM20P20, and described pulse width modulating chip U10 is SG3524.
Bring to a halt circuit as shown in Figure 2, welding commencing signal SW invalid (low level) is that welding process finishes, triode T1 ends, triode T3 gate signal is 15 volts, this pipe conducting, the voltage of MOTOR socket links to each other with zero volt, and motor stops immediately, played the welding process end, the effect of bringing to a halt that wire feed stops immediately.At the triode T1 described in this specific embodiment is 2N5551, and described triode T3 is 2404.
Wire feed promotes circuit as shown in Figure 3, the effect that the design wire feed promotes is, in the actual welding process, the welding machine output line is very long sometimes, cause the loss of wire feed rate signal on lead big, and the corresponding minimizing of the voltage that is added to the wire feeding motor two ends for the voltage loss on the compensating wire, thereby has designed wire feed lifting circuit.Promote the compensation size and select by toggle switch S30, when this toggle switch was all connected, compensation was maximum.The principle of this circuit is, after the feedback signal of motor voltage is isolated by two operational amplifier U30A, U30B, conducting by toggle switch is added to this voltage signal on the given signal of wire feed rate, thereby make the output pulse width of pulse width modulating chip SG3524 be added to, the ON time of MOSFET pipe T2 strengthens, thereby is added to the voltage increase of wire feeding motor.Described operational amplifier U30A, U30B are LM124.
Claims (6)
1. digitlization wire feed system, it is characterized in that, comprise the high frequency modulated impulse circuit, the given signal of wire feed rate is added to the collector terminal of MOSFET pipe W1 by the end of socket VGD, when welding commencing signal SW is effective, the gate pole of MOSFET pipe T1 has high level to make MOSFET manage the T2 conducting, the given signal of wire feed enters into the control end of pulse width modulating chip U10, this makes pulse width modulating chip U10 export pulse, this pulse makes MOSFET manage the T2 conducting, voltage is added on the engine socket, makes wire feeding motor add electric operation.
2. digitlization wire feed system according to claim 1 is characterized in that, described MOSFET pipe W1 is IRF640, and described MOSFET pipe T2 is MTM20P20, and described pulse width modulating chip U10 is SG3524.
3. digitlization wire feed system according to claim 1 is characterized in that, also comprises the circuit of bringing to a halt, and when welding commencing signal SW was invalid, triode T1 ended, triode T3 conducting, and the voltage of motor socket links to each other with zero volt, and motor stops immediately.
4. according to the described digitlization wire feed system of claim 3, it is characterized in that described triode T1 is 2N5551, described triode T3 is 2404.
5. digitlization wire feed system according to claim 1, it is characterized in that, comprise that also a wire feed promotes circuit: after the feedback signal of motor voltage is isolated by two operational amplifier U30A, U30B, conducting by toggle switch is added to this voltage signal on the given signal of wire feed rate, thereby make the output pulse width of pulse width modulating chip U10 strengthen, the ON time of MOSFET pipe T2 strengthens, and the voltage that is added to wire feeding motor increases.
6. digitlization wire feed system according to claim 5 is characterized in that, described operational amplifier U30A, U30B are LM124.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100174692A CN100368134C (en) | 2004-04-05 | 2004-04-05 | Digital wire feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100174692A CN100368134C (en) | 2004-04-05 | 2004-04-05 | Digital wire feeding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680065A CN1680065A (en) | 2005-10-12 |
| CN100368134C true CN100368134C (en) | 2008-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100174692A Expired - Fee Related CN100368134C (en) | 2004-04-05 | 2004-04-05 | Digital wire feeding system |
Country Status (1)
| Country | Link |
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| CN (1) | CN100368134C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814885B (en) * | 2010-05-12 | 2012-02-01 | 唐山松下产业机器有限公司 | Wire feed speed regulating system |
| CN103084707B (en) * | 2012-12-21 | 2014-07-30 | 南通富力机电设备有限责任公司 | Wire feeder control circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3132255A1 (en) * | 1980-08-27 | 1982-07-08 | Elin-Union Aktiengesellschaft für elektrische Industrie, 1141 Wien | Apparatus for an inert-gas welding unit with automatic wire feed |
| CN2170819Y (en) * | 1992-01-31 | 1994-07-06 | 宋武军 | Non-melting electrode welding feeder |
| US5932123A (en) * | 1997-01-13 | 1999-08-03 | O.J. Pipelines Corp. | Mobile automated pipeline welding and quality control system |
| US6166350A (en) * | 1999-08-13 | 2000-12-26 | Illinois Tool Works Inc. | Wire feed apparatus and method with nonlinear stage |
| JP2002153972A (en) * | 2000-11-20 | 2002-05-28 | Lincoln Global Inc | Monitor for electric arc welder |
| US6710299B2 (en) * | 2001-05-29 | 2004-03-23 | Lincoln Global, Inc. | System for enabling arc welders |
-
2004
- 2004-04-05 CN CNB2004100174692A patent/CN100368134C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3132255A1 (en) * | 1980-08-27 | 1982-07-08 | Elin-Union Aktiengesellschaft für elektrische Industrie, 1141 Wien | Apparatus for an inert-gas welding unit with automatic wire feed |
| CN2170819Y (en) * | 1992-01-31 | 1994-07-06 | 宋武军 | Non-melting electrode welding feeder |
| US5932123A (en) * | 1997-01-13 | 1999-08-03 | O.J. Pipelines Corp. | Mobile automated pipeline welding and quality control system |
| US6166350A (en) * | 1999-08-13 | 2000-12-26 | Illinois Tool Works Inc. | Wire feed apparatus and method with nonlinear stage |
| JP2002153972A (en) * | 2000-11-20 | 2002-05-28 | Lincoln Global Inc | Monitor for electric arc welder |
| US6710299B2 (en) * | 2001-05-29 | 2004-03-23 | Lincoln Global, Inc. | System for enabling arc welders |
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| Publication number | Publication date |
|---|---|
| CN1680065A (en) | 2005-10-12 |
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| CP01 | Change in the name or title of a patent holder |
Address after: 201204 Shanghai city Pudong New Area Beicai Industrial Park No. 33 Lianlinlu Patentee after: Shanghai Weiteli Welding Equipment Manufacturing Co., Ltd. Address before: 201204 Shanghai city Pudong New Area Beicai Industrial Park No. 33 Lianlinlu Patentee before: Weiteli Welding Equipment Manufacturing Co., Ltd., Shanghai |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20210405 |