CN103659063A - Voltage switching device for welding and locating - Google Patents
Voltage switching device for welding and locating Download PDFInfo
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- CN103659063A CN103659063A CN201210322868.4A CN201210322868A CN103659063A CN 103659063 A CN103659063 A CN 103659063A CN 201210322868 A CN201210322868 A CN 201210322868A CN 103659063 A CN103659063 A CN 103659063A
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- coil
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- contactor
- welding
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/127—Means for tracking lines during arc welding or cutting
- B23K9/1272—Geometry oriented, e.g. beam optical trading
- B23K9/1274—Using non-contact, optical means, e.g. laser means
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Arc Welding Control (AREA)
Abstract
The invention discloses a voltage switching device for welding and locating. The device comprises a high voltage switching circuit, a sensing signal control circuit and a signal transmitting circuit. The high voltage switching circuit comprises a boosting mutual inductor, a first coil, a second coil, a first contactor and a second contactor, and the first coil and the second coil are in parallel connection to be in serial connection with a first relay and connected to a boosting mutual inductor primary coil. A capacitance output bridge type rectifying circuit is connected with a boosting mutual inductor secondary coil. A first contactor is connected with the positive pole of the capacitance output bridge type rectifying circuit, and the second contactor is connector with the negative pole of the capacitance output bridge type rectifying circuit. The first coil controls the first contactor, and the second coil controls the second contactor. The sensing signal control circuit comprises a voltage reduction mutual inductor, a first filter rectifying circuit and a triode switch circuit. A primary coil of the voltage reduction mutual inductor is connected with the capacitance output bridge type rectifying circuit, and a secondary coil of the voltage reduction mutual inductor is in sequential connection with the first filter rectifying circuit and the triode switch circuit. The voltage switching device for welding and locating is high in locating precision and good in safety.
Description
Technical field
The present invention relates to a kind ofly for welding the voltage switching device of seeking position, be mainly used in the automatic welding equipment of engineering machinery.
Background technology
In automatic welding production process, run into the occasion that workpiece size deviation is larger (as cut deal structural member), often need to adopt a kind of contact to seek the position that a mode is determined weld seam.Yet, in prior art, contact seeks that a mode used seeks a voltage generally lower (generally lower than 50V), it is when there is the workpiece of insulating barrier in opposed face, cannot puncture this insulating barrier, therefore, prior art contact seek a mode to seek a precision low, even cannot seek position, affect the operation of whole automatic welding system.
In view of prior art contact, seek the above-mentioned defect of a mode, the inventor furthers investigate it, develop a kind of overcome above-mentioned defect for welding the voltage switching device of seeking position, this case produces thus.
Summary of the invention
The object of the present invention is to provide and a kind ofly seek that a precision is high and security is good for welding the voltage switching device of seeking position.
For reaching above-mentioned purpose, solution of the present invention is:
For welding a voltage switching device of seeking position, comprise high voltage change-over circuit, transducing signal control circuit and signal delivery circuit; High voltage change-over circuit comprises the transformer that boosts, electric capacity output bridge rectifier, the first relay, the second relay, the 3rd relay, the first coil, the second coil, the first contactor and the second contactor; The first coil with after the second coils from parallel connection of coils, connect with the first relay, and the boost primary coil of transformer of access; Electric capacity output bridge rectifier is connected on the secondary coil of the transformer that boosts; After the first contactor is connected with welding wire, connect with the second relay and be connected to the positive pole that electric capacity is exported bridge rectifier, after the second contactor is connected with mother metal, connect with the 3rd relay and be connected to the negative pole that electric capacity is exported bridge rectifier; The first coil is controlled the first contactor, and the second coil is controlled the second contactor; Transducing signal control circuit is connected with electric capacity output bridge rectifier as load resistance; Transducing signal control circuit comprises step-down transformer, the first filter rectifier and transistor switching circuit; The primary coil of step-down transformer is connected with electric capacity output bridge rectifier, and the secondary coil of step-down transformer connects the first filter rectifier and transistor switching circuit successively; Signal delivery circuit is connected between transistor collector and emitter stage; Signal delivery circuit comprises SB switch, seek an indicator lamp, seek position completes indicator lamp, tertiary coil, the 4th coil, the second filter rectifier and normally opened contact; After seeking an indicator lamp and connecting with SB switch, in parallel with the second filter rectifier and control the first relay, the 4th coil is with to seek an indicator lamp in parallel, and the second filter rectifier is connected with low-voltage alternating-current; Seek position and complete that indicator lamp is connected in series storage capacitor successively and tertiary coil is connected between transistor collector and emitter stage, tertiary coil is controlled normally opened contact.
Further, transducing signal control circuit also comprises delay circuit and voltage-stabiliser tube, and delay circuit and voltage-stabiliser tube are serially connected between the first filter rectifier and transistor switching circuit.
Further, electric capacity is exported also adjustable resistance in parallel of bridge rectifier.
Further, the first filter rectifier is formed in parallel by bridge rectifier and filter capacitor.
Further, delay circuit is formed in parallel by delay capacitor and time delay resistance.
Further, transistor switching circuit comprises neutralizing capacitance, and neutralizing capacitance is connected between transistor base and emitter stage.
Further, also comprise power supply indicator, power supply indicator is in parallel with the second filter rectifier.
Adopt after such scheme, the present invention is boosted after the primary coil access civil power of transformer, and the first relay power is connected, and makes the first coil and the second coil electricity, controls respectively the first contactor and the contact of the second contactor; Whole high voltage change-over circuit is connected, and civil power boosts to AC400V through the transformer that boosts, and through electric capacity output bridge rectifier filter rectification, becomes DC400V voltage-drop loading between mother metal and welding wire, starts to seek position; When mother metal and welding wire conducting while putting in place (seek position), the voltage-drop loading of AC400V, to the primary coil of step-down transformer, will arrive AC22V through step-down transformer, obtain the voltage of DC22V after the first filter rectifier, by transistor switching circuit conducting, thereby the signal a completing output will be sought.
Compared with prior art, the present invention has advantages of following:
One, seek a precision high, between mother metal and welding wire, load DC400V high voltage, can puncture easily insulating barrier, accurately seek position;
Two, security is good, produces DC400V voltage between welding wire and mother metal, due to the transformer power that boosts very little (about 2W), makes the On current very little (about 5mA) between welding wire and mother metal, and therefore, the high voltage of generation is safe.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present invention;
Fig. 2 is high voltage change-over circuit of the present invention;
Fig. 3 is transducing signal control circuit of the present invention;
Fig. 4 is signal delivery circuit circuit of the present invention;
Fig. 5 is workflow diagram of the present invention.
Label declaration
High voltage change-over circuit 1 transformer 11 that boosts
The first coil 12 second coils 13
The first relay 14 electric capacity output bridge rectifiers 15
The second contactor 17 second relays 18
The 3rd relay 19 transducing signal control circuits 2
Step-down transformer 21 first filter rectifiers 22
Triode 232 delay circuits 24
Voltage-stabiliser tube 25 signal delivery circuits 3
Seek an indicator lamp 31 SB switches 32
The second filter rectifier 33 is sought position and is completed indicator lamp 34
The 4th coil 37 normally opened contacts 38
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in detail.
Consult shown in Fig. 1 to Fig. 4, what the present invention disclosed is a kind of for welding the voltage switching device of seeking position, comprises high voltage change-over circuit 1, transducing signal control circuit 2 and signal delivery circuit 3.
High voltage change-over circuit 1 comprises the transformer 11 that boosts, the first coil 12, the second coil 13, the first relay 14, electric capacity output bridge rectifier 15, the first contactor 16, the second contactor 17, the second relay 18 and the 3rd relay 19.
After the first coil 12 is in parallel with the second coil 13, connect with the first relay 14, and access the primary coil of the transformer 11 that boosts.
Electric capacity output bridge rectifier 15 is connected on the secondary coil of the transformer 11 that boosts.For regulating the voltage between welding wire and mother metal, make to seek a sensitivity adjustable, electric capacity output bridge rectifier 15 is adjustable resistance 151 in parallel also.
After the first contactor 16 is connected with welding wire, connect with the second relay 18 and be connected to the positive pole that electric capacity is exported bridge rectifier 15, after the second contactor 17 is connected with mother metal, connect with the 3rd relay 19 and be connected to the negative pole that electric capacity is exported bridge rectifier 15.
The first coil 12 is controlled the first contactor 16, and the second coil 13 is controlled the second contactor 17, i.e. during the first coil 12 energising, and the first contactor 16 conductings, during the second coil 13 energising, the second contactor 17 conductings.
Transducing signal control circuit 2 is connected with electric capacity output bridge rectifier 15 as load resistance.
Transducing signal control circuit 2 comprises step-down transformer 21, the first filter rectifier 22 and transistor switching circuit 23.
The primary coil of step-down transformer 21 is connected with electric capacity output bridge rectifier 15, and the secondary coil of step-down transformer 21 connects the first filter rectifier 22 and transistor switching circuit 23 successively.
For realizing the delay function of signal, guarantee first to disconnect ancillary equipment, to restart and seek bit function, transducing signal control circuit 2 also comprises delay circuit 24; For realizing triode, control the stable of voltage, transducing signal control circuit 2 also comprises voltage-stabiliser tube 25, and delay circuit 24 and voltage-stabiliser tube 25 are serially connected between the first filter rectifier 21 and transistor switching circuit 23.
Wherein, the first filter rectifier 22 is formed in parallel by bridge rectifier 221 and filter capacitor 222.Delay circuit 24 is formed in parallel by delay capacitor 241 and time delay resistance 242.Transistor switching circuit 23 comprises neutralizing capacitance 231, and neutralizing capacitance 231 is connected between triode 232 base stages and emitter stage, the self-oscillation causing for overcoming triode interelectrode capacity.
For accepting exactly to seek a signal and a settling signal is sought in transmission, signal delivery circuit 3 is connected between triode 232 colelctor electrodes and emitter stage.
After seeking an indicator lamp 31 and connecting with SB switch 32, in parallel with the second filter rectifier 33, the 4th coil 37 is with to seek an indicator lamp 31 in parallel and control the first relay 14, and the second filter rectifier 33 is connected with low-voltage alternating-current, and the present embodiment is 24V interchange.
Seek position and complete that indicator lamp 34 is connected in series storage capacitor 35 successively and tertiary coil 36 is connected between triode 232 colelctor electrodes and emitter stage, tertiary coil 36 is controlled normally opened contacts 37.
Above-mentionedly seek an indicator lamp 31, seek that position completes indicator lamp 34 and power supply indicator 39 is all LED lamp.
As shown in Figure 5, during operation of the present invention, when opening power, the present invention is defaulted as welded condition.Under welded condition, welding positive pole and welding wire conducting, welding machine negative pole and mother metal conducting are welded.
When receiving while seeking signal, SB switch 32 closures, after seeking an indicator lamp 31 and connecting with SB switch 32, in parallel with the second filter rectifier 33, the 4th coil 37 is with to seek an indicator lamp 31 in parallel and control the first relay 14, and the second filter rectifier 33 is connected with low-voltage alternating-current, therefore, seek an indicator lamp 31 bright, the 4th coil 37 energisings, control the first relay 14 conductings, make the first coil 12 and the second coil 13 energisings, and then control the first contactor 16 and the second contactor 17 conductings, be switched to a state of seeking.
Seek under a state, AC22V civil power obtains the high pressure of AC400V through the transformer 11 that boosts, and obtains the high pressure of DC400V after 15 rectifications of electric capacity output bridge rectifier, is carried between mother metal and welding wire, obtains a high voltage of seeking.
Seek position while putting in place (when mother metal and welding wire conducting), the voltage-drop loading of AC400V is to the primary coil of step-down transformer, through step-down transformer, will arrive AC22V, after the first filter rectifier, obtain the voltage of DC22V, by transistor switching circuit 23 conductings, thereby make tertiary coil 36 and seek position to complete indicator lamp 34 energisings, show that seeking position completes, tertiary coil 36 is controlled normally opened contact 38 closures, by seeking the signal a completing output, disconnects SB switch 32 and then enters welded condition.
Under welded condition, SB switch 32 disconnects, and the 4th coil 37 power-off are controlled the first relay 14 and disconnected, and make the first coil 12 and the second coil 13 power-off, and then controls the first contactor 16 and the second contactor 17 disconnections, and itself and welding wire and mother metal are disconnected; Now welding wire and mother metal are connected to the source of welding current and weld.
With welding, seek position above and illustrate the present invention, the present invention can also be applicable to seeking in position of the automation equipments such as cutting, carrying.
The foregoing is only preferred embodiment of the present invention, the not restriction to this case design, all equivalent variations of doing according to the design key of this case, all fall into the protection domain of this case.
Claims (7)
1. for welding a voltage switching device of seeking position, it is characterized in that: comprise high voltage change-over circuit, transducing signal control circuit and signal delivery circuit; High voltage change-over circuit comprises the transformer that boosts, electric capacity output bridge rectifier, the first relay, the second relay, the 3rd relay, the first coil, the second coil, the first contactor and the second contactor; The first coil with after the second coils from parallel connection of coils, connect with the first relay, and the boost primary coil of transformer of access; Electric capacity output bridge rectifier is connected on the secondary coil of the transformer that boosts; After the first contactor is connected with welding wire, connect with the second relay and be connected to the positive pole that electric capacity is exported bridge rectifier, after the second contactor is connected with mother metal, connect with the 3rd relay and be connected to the negative pole that electric capacity is exported bridge rectifier; The first coil is controlled the first contactor, and the second coil is controlled the second contactor; Transducing signal control circuit is connected with electric capacity output bridge rectifier as load resistance; Transducing signal control circuit comprises step-down transformer, the first filter rectifier and transistor switching circuit; The primary coil of step-down transformer is connected with electric capacity output bridge rectifier, and the secondary coil of step-down transformer connects the first filter rectifier and transistor switching circuit successively; Signal delivery circuit is connected between transistor collector and emitter stage; Signal delivery circuit comprises SB switch, seek an indicator lamp, seek position completes indicator lamp, tertiary coil, the 4th coil, the second filter rectifier and normally opened contact; After seeking an indicator lamp and connecting with SB switch, in parallel with the second filter rectifier and control the first relay, the 4th coil is with to seek an indicator lamp in parallel, and the second filter rectifier is connected with low-voltage alternating-current; Seek position and complete that indicator lamp is connected in series storage capacitor successively and tertiary coil is connected between transistor collector and emitter stage, tertiary coil is controlled normally opened contact.
2. as claimed in claim 1 a kind of for welding the voltage switching device of seeking position, it is characterized in that: transducing signal control circuit also comprises delay circuit and voltage-stabiliser tube, delay circuit and voltage-stabiliser tube are serially connected between the first filter rectifier and transistor switching circuit.
3. as claimed in claim 1 a kind of for welding the voltage switching device of seeking position, it is characterized in that: electric capacity output bridge rectifier is adjustable resistance in parallel also.
4. as claimed in claim 1 a kind of for welding the voltage switching device of seeking position, it is characterized in that: the first filter rectifier is formed in parallel by bridge rectifier and filter capacitor.
5. as claimed in claim 2 a kind of for welding the voltage switching device of seeking position, it is characterized in that: delay circuit is formed in parallel by delay capacitor and time delay resistance.
As claimed in claim 1 a kind of for weld seek position voltage switching device, it is characterized in that: transistor switching circuit comprises neutralizing capacitance, neutralizing capacitance is connected between transistor base and emitter stage.
7. as claimed in claim 1 a kind of for welding the voltage switching device of seeking position, it is characterized in that: also comprise power supply indicator, power supply indicator is in parallel with the second filter rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322868.4A CN103659063B (en) | 2012-09-04 | 2012-09-04 | Voltage switching device for welding and locating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322868.4A CN103659063B (en) | 2012-09-04 | 2012-09-04 | Voltage switching device for welding and locating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103659063A true CN103659063A (en) | 2014-03-26 |
| CN103659063B CN103659063B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210322868.4A Active CN103659063B (en) | 2012-09-04 | 2012-09-04 | Voltage switching device for welding and locating |
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| Country | Link |
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| CN (1) | CN103659063B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583969A (en) * | 2016-11-24 | 2017-04-26 | 上海新时达电气股份有限公司 | Locating device for welding robot and welding robot working system of locating device |
| CN112692409A (en) * | 2020-12-19 | 2021-04-23 | 江苏汇能激光智能科技有限公司 | Tube plate welding system based on touch position finding calibration and welding method thereof |
| CN112916995A (en) * | 2021-03-29 | 2021-06-08 | 成都卡诺普自动化控制技术有限公司 | High-voltage position searching plate and high-voltage position searching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825876A (en) * | 1981-08-10 | 1983-02-16 | Shin Meiwa Ind Co Ltd | Detector for welding spot in automatic welding robot |
| JPH07121457B2 (en) * | 1991-08-28 | 1995-12-25 | 日本鋼管株式会社 | Method and device for detecting end of welded joint |
| JP3874495B2 (en) * | 1997-06-30 | 2007-01-31 | 日立ビアメカニクス株式会社 | Power supply for arc welding |
| JP3382822B2 (en) * | 1997-08-05 | 2003-03-04 | 松下電器産業株式会社 | Arc start device |
| JP3391225B2 (en) * | 1997-08-07 | 2003-03-31 | 松下電器産業株式会社 | Welding equipment |
| CN101745720A (en) * | 2009-12-14 | 2010-06-23 | 王树军 | Method for position finding and welding of protective plate, small foot and longitudinal beam for aluminum-magnesium alloy tanker by adopting robot |
| CN201936020U (en) * | 2010-11-29 | 2011-08-17 | 珠海和氏自动化设备有限公司 | Welding line locating mechanism |
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2012
- 2012-09-04 CN CN201210322868.4A patent/CN103659063B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583969A (en) * | 2016-11-24 | 2017-04-26 | 上海新时达电气股份有限公司 | Locating device for welding robot and welding robot working system of locating device |
| CN106583969B (en) * | 2016-11-24 | 2019-03-29 | 上海新时达电气股份有限公司 | Welding robot is with seeking a device and its welding robot work system |
| CN112692409A (en) * | 2020-12-19 | 2021-04-23 | 江苏汇能激光智能科技有限公司 | Tube plate welding system based on touch position finding calibration and welding method thereof |
| CN112916995A (en) * | 2021-03-29 | 2021-06-08 | 成都卡诺普自动化控制技术有限公司 | High-voltage position searching plate and high-voltage position searching device |
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| Publication number | Publication date |
|---|---|
| CN103659063B (en) | 2015-07-15 |
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Address after: 361000 Xiamen City, Fujian Province, Jinlong Road, Jimei District, No. 893 Patentee after: XIAMEN AEROSPACE SIERTE ROBOT SYSTEM CO.,LTD. Address before: 361000 Xiamen City, Fujian Province, Jinlong Road, Jimei District, No. 893 Patentee before: XIAMEN SIERT ROBOT SYSTEM Co.,Ltd. Address after: 361000 Xiamen City, Fujian Province, Jinlong Road, Jimei District, No. 893 Patentee after: XIAMEN SIERT ROBOT SYSTEM Co.,Ltd. Address before: 361000 Xiamen City, Fujian Province, Jinlong Road, Jimei District, No. 893 Patentee before: Xiamen Siert Robot System Co.,Ltd. |