CN103028852A - Laser and electric arc composite welding device with on-line warning function - Google Patents
Laser and electric arc composite welding device with on-line warning function Download PDFInfo
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- CN103028852A CN103028852A CN2012105517941A CN201210551794A CN103028852A CN 103028852 A CN103028852 A CN 103028852A CN 2012105517941 A CN2012105517941 A CN 2012105517941A CN 201210551794 A CN201210551794 A CN 201210551794A CN 103028852 A CN103028852 A CN 103028852A
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Abstract
The invention provides a laser and electric arc composite welding device with an on-line warning function and relates to the laser and electric arc composite welding device. The monitoring on the states of laser output abnormity or electric arc extinguishing in the laser-electric arc composite welding process is realized. The laser and electric arc composite welding device comprises a welding power supply, a welding gun and a laser, wherein the welding gun is connected onto an output electrode of the welding power supply, the laser output end of the laser irradiates at the welding point part generated by the welding gun, the laser and electric arc composite welding device also comprises a current sensor, a PLC (programmable logic controller) controller, an optical sensor and a buzzer alarm, the current sensor is connected between the welding gun and the welding power supply for extracting current signals, the current signal output end of the current sensor is connected with one signal input end of the PLC controller, the optical sensor is arranged above a molten pool of a workpiece for receiving laser signals reflected by the workpiece, the signal output end of the optical sensor is connected with the other input end of the PLC controller, and one signal output end of the PLC controller is connected with the signal input end of the buzzer alarm.
Description
Technical field
The present invention relates to a kind of laser, electric arc combined welder.
Background technology
Laser weld is the application of typical laser processing technology, and welding process has the advantage that arc welding process hardly matches take the high-energy focusing laser beam as thermal source, and, fusion penetration narrow such as weld seam is dark, distortion is little, speed is fast etc., is a kind of efficient welding method.But the cost of laser weld is high, and that the butt-welding fitting equipment condition requires is high (gap, misalignment, not uniform thickness etc.), the further application of laser weld that weld seam has easily produced the drawbacks limit such as pore, crack defect.In order to remedy the deficiency of single Laser Welding, laser and other thermal source compound welding technology come into one's own gradually, some composite heat power supply welding methods have appearred, what application was wider at present mainly is the laser-arc hybrid welding technology, such as laser-TIG, laser-MIG/MAG, laser-plasma arcs composite welding etc.
Obtain the effect of laser and arc composite heat source coordinative role, laser-arc hybrid welding in industry equipment is one of key factor.At present, the laser-arc hybrid welding in industry system consists of by several chief components are compound usually: laser instrument, arc welding system, compound welding gun, tooling fixture.For the ease of realizing the automatic welding process, compound welding gun is installed on welding robot or the Digit Control Machine Tool usually, and welding process is sent work order by robot or Digit Control Machine Tool to laser instrument, welding machine, tooling fixture, realizes the work of a few part coordination linkage.
Common Laser-Arc Hybrid Welding spare equipment is in welding process, can laser instrument work and be subject to the several factors restriction, such as cooling water system (hydraulic pressure, water temperature, dew point), light path, outgoing mirror, protective glass etc., in case these factor abnormals, laser just can't be exported or laser power can't normally be coupled on the weldment, although most of laser instrument possessed autoprotection and fault prompt facility after suchlike fault occured, but usually only for protection laser instrument itself, do not stop the composite welding process; More very it, protective glass is usually contaminated because splashing in the welding process, although cause laser output, the protected eyeglass of laser stops that the energy of most of laser is basic just not to be coupling on the weldment, but this abnormal conditions can't be judged by laser instrument self.Above abnormal conditions occur, and finally all can cause the laser-arc hybrid welding in industry process to become single arc welding process.On the other hand, in the laser-arc hybrid welding in industry process, electric arc also can extinguish because of various reasons.For example during Laser-MIG Composite Welding, wire feed system is stopped up or welding wire is used up and caused arc extinction, makes welding process become single Laser Welding; Or wire feed can continue, and electric arc extinguishes, and makes welding process become wire filling laser welding.Obviously, any situation all can not satisfy technological requirement, in the welding process of some large-sized structural parts (such as aluminum alloy bodywork),, above-mentioned abnormal conditions can not in time stop the welding process of single source in case occuring, will cause underproof welding product to occur, reduce production efficiency, and economic loss.
Because laser and electric arc are the operating types that human body is existed harm; be not easy to again operating personnel's Real-Time Monitoring; therefore situation unusual to Laser output in the laser-arc hybrid welding in industry process in the urgent need to a kind of real-time monitoring system or arc extinction is monitored; in time avoid the generation of single source welding process, and alarm.
Summary of the invention
The purpose of this invention is to provide a kind of laser that can report to the police online, electric arc combined welder, monitor with the situation that realizes or arc extinction unusual to Laser output in the laser-arc hybrid welding in industry process.It comprises the source of welding current 9, welding gun 5 and laser instrument 3, welding gun 5 is connected on the output electrode of the source of welding current 9, another output electrode of the source of welding current 9 connects workpiece 1, the laser output of laser instrument 3 is radiated at workpiece 1, the solder joint place that welding gun 5 produces, it also comprises current sensor 6, PLC controller 8, optical pickocff 4 and buzzer siren 7, current sensor 6 is connected on the connecting line between welding gun 5 and the source of welding current 9 to extract current signal, the current signal output end of current sensor 6 connects a signal input part of PLC controller 8, the laser signal that 12 tops, molten bath that optical pickocff 4 is arranged on workpiece 1 reflect back to receive workpiece 1, the signal output part of optical pickocff 4 connects another signal input part of PLC controller 8, a signal output part of PLC controller 8 connects the signal input part of buzzer siren 7, another signal output part connecting laser 3 outsides of PLC controller 8 go out the optical control signal input, the control signal input of the power supply of another signal output part connecting welding power supply 9 of PLC controller 8.
In the welding job process, the electric current that current sensor 6 extracts in the electric arc welding process, optical pickocff 4 extracts the laser power of laser instrument 3 outputs, when above-mentioned current value or laser power value change, produce control command in the PLC controller 8, close simultaneously laser instrument 3 and the source of welding current 9, and make buzzer siren 7 send the warning of ringing.Thereby the situation that realizes or arc extinction unusual to Laser output in the laser-arc hybrid welding in industry process is monitored.
Description of drawings
Fig. 1 is the working condition schematic diagram of apparatus of the present invention.
The specific embodiment
The specific embodiment one: specify present embodiment below in conjunction with Fig. 1.Present embodiment comprises the source of welding current 9, welding gun 5 and laser instrument 3, welding gun 5 is connected on the output electrode of the source of welding current 9, another output electrode of the source of welding current 9 connects workpiece 1, the laser output of laser instrument 3 is radiated at workpiece 1, the solder joint place that welding gun 5 produces, it also comprises current sensor 6, PLC controller 8, optical pickocff 4 and buzzer siren 7, current sensor 6 is connected on the connecting line between welding gun 5 and the source of welding current 9 to extract current signal, the current signal output end of current sensor 6 connects a signal input part of PLC controller 8, the laser signal that 12 tops, molten bath that optical pickocff 4 is arranged on workpiece 1 reflect back to receive workpiece 1, the signal output part of optical pickocff 4 connects another signal input part of PLC controller 8, a signal output part of PLC controller 8 connects the signal input part of buzzer siren 7, another signal output part connecting laser 3 outsides of PLC controller 8 go out the optical control signal input, the control signal input of the power supply of another signal output part connecting welding power supply 9 of PLC controller 8.In the laser-arc hybrid welding in industry process, after laser and the electric arc collaborative work, adopt the arc current in the current sensor Real-Time Monitoring welding process, simultaneously to the laser output power Real-Time Monitoring, in case arc extinction or laser power output abnormality, sent by separately executive component and to stop order, welding process is stopped and alarm, thereby guarantee that whole welding process finishes under laser and electric arc combined effect, the heavy losses that the substandard product of avoiding single source to weld causes, reduce percent defective and the fringe cost of laser-arc hybrid welding in industry converted products, also improved simultaneously welding production efficiency and security.
As shown in Figure 1, take laser-MIG/MAG composite welding as example, laser instrument 3 outgoing laser beams 2, laser beam 2 acts on and produces laser " keyhole 11 " on the workpiece 1, the source of welding current 9 gives welding gun 5 power supplies, electric arc produces between welding gun 5 and workpiece 1, and formation welding pool 12, laser " keyhole 11 " and electric arc melting bath 12 actings in conjunction, finish welding process, optical pickocff 4 gathers the laser signal of the specific wavelength of workpiece 1 surface reflection, issues PLC controller 8, and current sensor 6 gathers the current signal of the source of welding current 9 outputs and sends to PLC controller 8 simultaneously.During normal operation, PLC controller 8 can receive laser signal and current signal simultaneously; Do not receive the laser signal of specific wavelength when optical pickocff 4, or current sensor 6 is not when receiving welding current signal, PLC controller 8 sends cut-off signals to laser instrument 3 and the source of welding current 9 simultaneously, close laser instrument 3 and the source of welding current 9, stop welding process, and send signal to buzzer siren 7 prompting warnings.
The specific embodiment two: the present embodiment characteristics are: because the surface reflectivity of soldered material and laser output power is different, 4 pairs of light intensities that receive of optical pickocff will have the upscale protection function; In addition, except laser surface of the work has reflection, arclight also can be reflected, and therefore has or not Laser output in order to guarantee to identify like clockwork, and the laser in 4 pairs of specific wavelengths of optical pickocff (optical fiber laser optical maser wavelength 1.06 μ m) zone will have certain recognition function.Optical pickocff 4 among the present invention adopts the higher photodiode type laser energy sensor of sensitivity to receive laser (model is the FGA03 of THORLABS company), and optical pickocff 4 inside have the veiling glare of other wave band of filtering eyeglass filtering.
The specific embodiment three: the present embodiment characteristics are: according to the different arc welding methods in the laser-arc hybrid welding in industry method, select dissimilar welding guns, Figure 1 shows that laser-MIG/MAG composite welding, select the compound welding gun of MIG, MAG.Also can be TIG welding gun, submerged-arc welding gun, plasma (welding) torch etc.
The specific embodiment four: the present embodiment characteristics are: current sensor 6 of the present invention is selected is that the maximum range of LEM company is the current sensor of 300A.
The specific embodiment five: the present embodiment characteristics are: the source of welding current that the present invention adopts is the totally digitilized Arc Welding Power of EWM company, is applicable to laser-MIG/MAG welding.When other arc welding method and laser compound welding, can adopt the corresponding source of welding current.
Claims (5)
1. the laser that can report to the police online, electric arc combined welder, it is characterized in that it comprises the source of welding current (9), welding gun (5) and laser instrument (3), welding gun (5) is connected on the output electrode of the source of welding current (9), another output electrode of the source of welding current (9) connects workpiece (1), the laser output of laser instrument (3) is radiated at workpiece (1), the solder joint place that welding gun (5) produces, it also comprises current sensor (6), PLC controller (8), optical pickocff (4) and buzzer siren (7), current sensor (6) is connected on the connecting line between welding gun (5) and the source of welding current (9) to extract current signal, the current signal output end of current sensor (6) connects a signal input part of PLC controller (8), optical pickocff (4) is arranged on the laser signal that reflects back to receive workpiece (1) above the molten bath (12) of workpiece (1), the signal output part of optical pickocff (4) connects another signal input part of PLC controller (8), a signal output part of PLC controller (8) connects the signal input part of buzzer siren (7), another signal output part connecting laser (3) outside of PLC controller (8) goes out the optical control signal input, the control signal input of the power supply of another signal output part connecting welding power supply (9) of PLC controller (8).
2. the laser that can report to the police online according to claim 1, electric arc combined welder is characterized in that optical pickocff (4) adopts the higher photodiode type laser energy sensor of sensitivity to receive laser.
3. the laser that can report to the police online according to claim 1, electric arc combined welder is characterized in that welding gun (5) selects the compound welding gun of MIG, MAG, TIG welding gun, submerged-arc welding gun or plasma (welding) torch.
4. the laser that can report to the police online according to claim 1, electric arc combined welder, what it is characterized in that current sensor (6) selects is that the maximum range of LEM company is the current sensor of 300A.
5. the laser that can report to the police online according to claim 1, electric arc combined welder is characterized in that the source of welding current is the totally digitilized Arc Welding Power of EWM company.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105517941A CN103028852A (en) | 2012-12-18 | 2012-12-18 | Laser and electric arc composite welding device with on-line warning function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105517941A CN103028852A (en) | 2012-12-18 | 2012-12-18 | Laser and electric arc composite welding device with on-line warning function |
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| CN103028852A true CN103028852A (en) | 2013-04-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785931A (en) * | 2015-04-22 | 2015-07-22 | 哈尔滨工程大学 | Plasma-submerged arc hybrid welding system and welding method thereof |
| CN106513993A (en) * | 2015-12-04 | 2017-03-22 | 重庆江陆激光科技有限公司 | Inner bore welding device |
| TWI584907B (en) * | 2015-06-05 | 2017-06-01 | 星雲電腦股份有限公司 | Laser cutting/engraving machine having fire prevention safety mechanism |
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| CN101072655A (en) * | 2004-12-15 | 2007-11-14 | 弗罗纽斯国际有限公司 | Method and device for combined laser-arc welding with control of laser unit according to welding torch |
| CN201654948U (en) * | 2010-04-07 | 2010-11-24 | 北京奥邦焊业有限公司 | Welding circular-roll parking warning device |
| CN201867607U (en) * | 2010-11-11 | 2011-06-15 | 东风汽车公司 | Spot welding operation counting controller |
| CN102699588A (en) * | 2012-07-01 | 2012-10-03 | 丰生微电机(上海)有限公司 | Circulation cooling system with feedback and cooling method for welding machine |
| CN202539832U (en) * | 2012-01-17 | 2012-11-21 | 东莞市科伟自动化设备有限公司 | Control system of automatic tooth welding machine |
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2012
- 2012-12-18 CN CN2012105517941A patent/CN103028852A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072655A (en) * | 2004-12-15 | 2007-11-14 | 弗罗纽斯国际有限公司 | Method and device for combined laser-arc welding with control of laser unit according to welding torch |
| CN201654948U (en) * | 2010-04-07 | 2010-11-24 | 北京奥邦焊业有限公司 | Welding circular-roll parking warning device |
| CN201867607U (en) * | 2010-11-11 | 2011-06-15 | 东风汽车公司 | Spot welding operation counting controller |
| CN202539832U (en) * | 2012-01-17 | 2012-11-21 | 东莞市科伟自动化设备有限公司 | Control system of automatic tooth welding machine |
| CN102699588A (en) * | 2012-07-01 | 2012-10-03 | 丰生微电机(上海)有限公司 | Circulation cooling system with feedback and cooling method for welding machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785931A (en) * | 2015-04-22 | 2015-07-22 | 哈尔滨工程大学 | Plasma-submerged arc hybrid welding system and welding method thereof |
| TWI584907B (en) * | 2015-06-05 | 2017-06-01 | 星雲電腦股份有限公司 | Laser cutting/engraving machine having fire prevention safety mechanism |
| CN106513993A (en) * | 2015-12-04 | 2017-03-22 | 重庆江陆激光科技有限公司 | Inner bore welding device |
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Application publication date: 20130410 |