CN101327542B - Control method and apparatus for processing striking and sticking thread of welding - Google Patents
Control method and apparatus for processing striking and sticking thread of welding Download PDFInfo
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- CN101327542B CN101327542B CN2007101262020A CN200710126202A CN101327542B CN 101327542 B CN101327542 B CN 101327542B CN 2007101262020 A CN2007101262020 A CN 2007101262020A CN 200710126202 A CN200710126202 A CN 200710126202A CN 101327542 B CN101327542 B CN 101327542B
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Abstract
The invention relates to a method to detect the occurrence of wire sticking and a device thereof. In the entire welding process (from welding of the starting arc to the completion of the welding), a control system performs real-time detection of the occurrence of wire sticking. The detection method is as follows: the control system performs real-time detection of the welding current or the welding voltage; if the system detects that the welding current is higher than the upper limit value A1 or the welding voltage is lower than the lower limit value V1, the control system judges an occurrence of wire sticking and sends out a signal to stop the wire feeding motor until the front end of the welding wire melts and forms an electric arc; as the detected welding current value is lower than the lower limit A2 or the detected voltage value is higher than the upper limit value V2, the control system judges the state of non-wire welding and sends a signal to start up the wire feeding motor. The values A1, A2, V1 and V2 are all data from the actual experience of welding engineering.
Description
Technical field
The present invention relates to a kind of control method and device that welds striking and haircuts processing.
Background technology
In thick welding wire MIG/MAG weld job, welding wire and mother metal adhesion phenomenon appear in the particularly welding of crude aluminum silk occasionally, and especially welding wire and mother metal adhesion more frequently occur when the beginning striking.Because control mode was that welding wire was promptly normally sent after output current was arranged in the past, so welding wire is also sent continuously when welding wire and mother metal adhesion, but because welding wire and mother metal adhesion can't form electric arc, striking welding is again made troubles to welding operation after need stopping welding process and cutting off welding wire.Welding wire and mother metal adhesion when control mode also caused striking easily in the past in addition.
Summary of the invention
The present invention mainly is at this way to solve the problem.
According to technical scheme of the present invention, in the welding overall process, (finish) control system to welding in real time to whether haircuts detects from the welding striking, detection method is the size that control system is monitored welding current or weldingvoltage in real time, when detected welding current value surpasses higher limit A1 or weldingvoltage and is lower than lower limit V1, control system is judged as and haircuts takes place and send the wire feeding motor stop signal, after the fusing of welding wire front end and forming electric arc, when the welding current value that detects was lower than lower limit A2 or magnitude of voltage and is higher than higher limit V2, control system was judged as non-haircuts state and sends the wire feeding motor enabling signal.A1, A2, V1, V2 are the empirical data that obtains in the actual welding engineering.
More specifically, the invention provides the method for haircuts that whether in welding process, detects, comprising: the size of monitoring welding current in real time; When detected welding current surpasses higher limit A1, be judged as and haircuts take place and send the wire feeding motor stop signal; When the welding current that detects is lower than lower limit A2, is judged as non-haircuts state and sends the wire feeding motor enabling signal.
According to said method of the present invention, wherein A1, A2 are the empirical data that obtains in the actual welding engineering.
The present invention also provides a kind of method of haircuts that whether detects in welding process, comprising: the size of monitoring weldingvoltage in real time; When detected weldingvoltage is lower than lower limit V1, is judged as and haircuts takes place and send the wire feeding motor stop signal; When the welding voltage value that detects is higher than higher limit V2, is judged as non-haircuts state and sends the wire feeding motor enabling signal.
According to said method of the present invention, wherein V1, V2 are the empirical data that obtains in the actual welding engineering.
The present invention also provides a kind of method of haircuts that whether detects in welding process, comprising: the size of monitoring welding current and weldingvoltage in real time; When detected welding current surpasses higher limit A1 and weldingvoltage and is lower than that any condition satisfies among the lower limit V1, be judged as and haircuts take place and send the wire feeding motor stop signal; When the welding current that detects is lower than lower limit A2 and weldingvoltage and is higher than that any condition satisfies among the higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
According to said method of the present invention, wherein A1, A2, V1, V2 are the empirical data that obtains in the actual welding engineering.
The present invention also provides a kind of method of haircuts that whether detects in welding process, comprising: the size of monitoring welding current and weldingvoltage in real time; When detected welding current surpasses higher limit A1 and weldingvoltage and is lower than lower limit V1, be judged as and haircuts take place and send the wire feeding motor stop signal; When the welding current that detects is lower than lower limit A2 and magnitude of voltage and is higher than higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
According to said method of the present invention, wherein A1, A2, V1, V2 are the empirical data that obtains in the actual welding engineering.
The present invention also provides a kind of welding controller, comprising: current detecting unit is used for monitoring in real time the size of welding current; The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result; Control module according to the comparative result of electric current comparing unit, when detecting welding current above higher limit A1, is judged as and haircuts takes place and send the wire feeding motor stop signal; When detecting welding current and be lower than lower limit A2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
According to said apparatus of the present invention, also comprise the unit is set, can be used to be provided with the occurrence of A1 and/or A2 in actual use.
The present invention also provides a kind of welding controller, comprising: voltage detection unit is used for monitoring in real time the size of weldingvoltage; Voltage comparison unit is used in the future that the voltage of voltage detection unit compares with a reference value lower limit V1 and higher limit V2, and exports comparative result; Control module according to the comparative result of voltage comparison unit, when detecting weldingvoltage and be lower than lower limit V1, is judged as and haircuts takes place and send the wire feeding motor stop signal; When detecting weldingvoltage and be higher than higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
According to said apparatus of the present invention, also comprise the unit is set, can be used to be provided with the occurrence of V1 and/or V2 in actual use.
The present invention also provides a kind of welding controller, comprising: current detecting unit is used for monitoring in real time the size of welding current; Voltage detection unit is used for monitoring in real time the size of weldingvoltage; The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result; Voltage comparison unit is used in the future that the voltage of voltage detection unit compares with a reference value lower limit V1 and higher limit V2, and exports comparative result; Control module, reception is from the comparative result of electric current comparing unit and voltage comparison unit, welding current surpasses higher limit A1 and weldingvoltage is lower than when any condition satisfies among the lower limit V1 if detect, and is judged as haircuts to take place and send the wire feeding motor stop signal; Welding current is lower than lower limit A2 and welding voltage value is higher than when any condition satisfies among the higher limit V2 if detect, and is judged as non-haircuts state and sends the wire feeding motor enabling signal.
According to said apparatus of the present invention, also comprise the unit is set, can be used for being provided with at least one occurrence of A1, A2, V1, V2 in actual use.
The present invention also provides a kind of welding controller, comprising: current detecting unit is used for monitoring in real time the size of welding current; Voltage detection unit is used for monitoring in real time the size of weldingvoltage; The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result; Voltage comparison unit is used in the future that the voltage of voltage detection unit compares with a reference value lower limit V1 and higher limit V2, and exports comparative result; Control module receives the comparative result from electric current comparing unit and voltage comparison unit, if when detecting welding current and surpassing higher limit A1 and weldingvoltage and be lower than lower limit V1, is judged as and haircuts takes place and send the wire feeding motor stop signal; If when detecting welding current and being lower than lower limit A2 and welding voltage value and being higher than higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
According to said apparatus of the present invention, also comprise the unit is set, can be used for being provided with at least one occurrence of A1, A2, V1, V2 in actual use.
The present invention also provides a kind of welding equipment, comprises arc ignition circuit; Wire feeding motor; And invent described welding controller according to above-mentioned each, be used to control the startup of wire feeding motor and stop.
Because the present invention judges haircuts state and non-haircuts state by the size that detects welding current or weldingvoltage, and then control the stopping and starting of wire feeding motor, like this, haircuts state welding equipment takes place just stop wire feed automatically, even welding wire is also sent continuously when having avoided conventional welding equipment welding wire and mother metal adhesion, thereby striking welding again after not needing to stop welding process and cutting off welding wire, loaded down with trivial details work exempted, alleviate working strength, avoided the waste of material.In addition, use the upper lower limit value parameter A 1, A2, V1, V2 of the welding equipment of control method of the present invention can be, thereby also be difficult for taking place haircuts according to actual welding work adjustment.
Description of drawings
Fig. 1 is the structured flowchart of welding equipment of the present invention;
Fig. 2 is the structured flowchart of welding controller according to an embodiment of the invention;
Fig. 3 is the structured flowchart of welding controller according to an embodiment of the invention;
Fig. 4 is the structured flowchart of welding controller according to an embodiment of the invention;
Fig. 5 is according to one embodiment of the invention, whether detects the flow chart of the method for haircuts in welding process;
Fig. 6 is according to one embodiment of the invention, whether detects the flow chart of the method for haircuts in welding process;
Fig. 7 is according to one embodiment of the invention, whether detects the flow chart of the method for haircuts in welding process;
Fig. 8 is according to one embodiment of the invention, whether detects the flow chart of the method for haircuts in welding process.
The specific embodiment
In thick welding wire MIG/MAG weld job, welding wire and mother metal adhesion phenomenon appear in the particularly welding of crude aluminum silk easily, and especially welding wire and mother metal adhesion more frequently occur when the beginning striking.When adhesion took place, the size of welding current or weldingvoltage can change, that is, welding current raises, and weldingvoltage descends.After adhesion disconnected, welding current can reduce again, and weldingvoltage can rise again.
The structured flowchart of the welding equipment that the schematically illustrated the present invention of Fig. 1 uses.Welding controller of the present invention detects welding output circuit and obtains welding current A and/or weldingvoltage V, send the wire feeding motor control signal to wire feeding motor, comprise wire feeding motor enabling signal and wire feeding motor stop signal, thereby control the startup of wire feed and stop with arc ignition control circuit.
Below describe welding controller of the present invention and control corresponding method in detail.
Fig. 2 is the structured flowchart of welding controller according to an embodiment of the invention.The basic structure of the welding controller of Fig. 2 embodiment comprises: current detecting unit, be used for monitoring in real time the size of welding current A, and export to the electric current comparing unit; The electric current comparing unit will compare from the electric current of current detecting unit and predetermined reference value higher limit A1 and lower limit A2, and the output comparative result; The control module that is coupled with the electric current comparing unit sends the wire feeding motor control signal according to the comparative result of electric current comparing unit to wire feeding motor.
This welding controller also comprises the unit optionally is set, can be used to be provided with the occurrence of A1 and/or A2 in actual use, thereby maybe need etc. at different mother metals, welding wire and different workplaces, above-mentioned preset upper limit value A1 and/or lower limit A2 are set.
Fig. 5 is according to one embodiment of the invention, whether detects the flow chart of the method (500) of haircuts in welding process.
Welding controller of the present invention can (finish to welding from the welding striking) in real time to whether haircuts detects in the welding overall process.Detection method is from starting welding striking (501), control module can be monitored welding current (502) by current detecting unit and electric current comparing unit constantly, when current ratio surpasses higher limit A1 than unit judges welding current A (503, be), control module is judged as and haircuts takes place and send wire feeding motor stop signal (504), and continues the monitoring welding current; When current ratio is lower than lower limit A2 than unit judges welding current A (505, be), control module is judged as non-haircuts state and sends wire feeding motor enabling signal (506), and continues to monitor constantly welding current and finish up to welding.Higher limit A1 and/or lower limit A2 can be the empirical datas that obtains in the actual welding engineering.According to a preferred embodiment of the present invention, higher limit A1 and/or lower limit A2 in use can also (for example maybe need at different mother metals, welding wire and different workplaces etc.) as the case may be and adjust.
Fig. 3 is the structured flowchart of welding controller according to an embodiment of the invention.The basic structure of the welding controller of Fig. 3 embodiment comprises: voltage detection unit, be used for monitoring in real time the size of weldingvoltage V, and export to voltage comparison unit; Voltage comparison unit will compare from the voltage of voltage detection unit and predetermined reference value lower limit V1 and higher limit V2, and the output comparative result; The control module that is coupled with voltage comparison unit sends the wire feeding motor control signal according to the comparative result of voltage comparison unit to wire feeding motor.
This welding controller also comprises the unit optionally is set, can be used to be provided with the occurrence of V1 and/or V2 in actual use, thereby maybe need etc. at different mother metals, welding wire and different workplaces, above-mentioned predetermined lower limit value V1 and higher limit V2 are set.
Fig. 6 is according to one embodiment of the invention, whether detects the flow chart of the method (600) of haircuts in welding process.
Welding controller of the present invention can (finish to welding from the welding striking) in real time to whether haircuts detects in the welding overall process.Detection method is from starting welding striking (601), control module can be monitored weldingvoltage (602) by voltage detection unit and voltage comparison unit constantly, when voltage comparison unit judges that weldingvoltage is lower than lower limit V1 (603, be), control module is judged as and haircuts takes place and send wire feeding motor stop signal (604), and continues the monitoring weldingvoltage; When voltage comparison unit judges that weldingvoltage is higher than higher limit V2 (605, be), control module is judged as non-haircuts state and sends wire feeding motor enabling signal (606), and continues to monitor constantly weldingvoltage and finish up to welding.Upper limit lower limit V1 and/or higher limit V2 can be the empirical datas that obtains in the actual welding engineering.According to a preferred embodiment of the present invention, upper limit lower limit V1 and/or higher limit V2 in use can also (for example maybe need at different mother metals, welding wire and different workplaces etc.) as the case may be and adjust.
Fig. 4 is the structured flowchart of welding controller according to an embodiment of the invention.The basic structure of the welding controller of Fig. 4 embodiment comprises: current detecting unit, be used for monitoring in real time the size of welding current A, and export to the electric current comparing unit; The electric current comparing unit will compare from the electric current of current detecting unit and predetermined reference value higher limit A1 and lower limit A2, and the output comparative result; Voltage detection unit is used for monitoring in real time the size of weldingvoltage V, exports to voltage comparison unit; Voltage comparison unit will compare from the voltage of voltage detection unit and predetermined reference value lower limit V1 and higher limit V2, and the output comparative result; The control module that is coupled with electric current comparing unit and voltage comparison unit sends the wire feeding motor control signal according to the comparative result of electric current comparing unit and/or according to the comparative result of voltage comparison unit to wire feeding motor.
This welding controller also comprises the unit optionally is set, can be used for being provided with at least one occurrence of A1, A2, V1, V2 in actual use, thereby maybe need etc. at different mother metals, welding wire and different workplaces, above-mentioned predetermined A1, A2, at least one the occurrence among V1, the V2 are set.
Fig. 7 is according to one embodiment of the invention, whether detects the flow chart of the method (700) of haircuts in welding process.
Welding controller of the present invention can (finish to welding from the welding striking) in real time to whether haircuts detects in the welding overall process.Detection method is from starting welding striking (701), control module can be monitored weldingvoltage by voltage detection unit and voltage comparison unit constantly, monitor welding current (702) by current detecting unit and electric current comparing unit, when the welding current that detects surpasses higher limit A1 and weldingvoltage and is lower than that any condition satisfies among the lower limit V1 (703, be), control module is judged as and haircuts takes place and send wire feeding motor stop signal (704), and continues the monitoring weldingvoltage; When the welding current that detects is lower than lower limit A2 and welding voltage value and is higher than that any condition satisfies among the higher limit V2 (705, be), control module is judged as non-haircuts state and sends wire feeding motor enabling signal (706), and continues to monitor constantly weldingvoltage and finish up to welding.Among parameter A 1, A2, V1, the V2 at least one can be the empirical data that obtains in the actual welding engineering.According to a preferred embodiment of the present invention, at least one among parameter A 1, A2, V1, the V2 in use can also (for example maybe need at different mother metals, welding wire and different workplaces etc.) as the case may be and adjust.
Fig. 8 is according to one embodiment of the invention, whether detects the flow chart of the method (800) of haircuts in welding process.
Welding controller of the present invention can (finish to welding from the welding striking) in real time to whether haircuts detects in the welding overall process.Detection method is from starting welding striking (801), control module can be monitored weldingvoltage by voltage detection unit and voltage comparison unit constantly, monitor welding current (802) by current detecting unit and electric current comparing unit, when the welding current that detects surpasses higher limit A1 and weldingvoltage and is lower than lower limit V1 and satisfies simultaneously (803, be), control module is judged as and haircuts takes place and send wire feeding motor stop signal (804), and continues the monitoring weldingvoltage; When the welding current that detects is lower than lower limit A2 and welding voltage value and is higher than higher limit V2 and satisfies simultaneously (805, be), control module is judged as non-haircuts state and sends wire feeding motor enabling signal (806), and continues to monitor constantly weldingvoltage and finish up to welding.Among parameter A 1, A2, V1, the V2 at least one can be the empirical data that obtains in the actual welding engineering.According to a preferred embodiment of the present invention, at least one among parameter A 1, A2, V1, the V2 in use can also (for example maybe need at different mother metals, welding wire and different workplaces etc.) as the case may be and adjust.
Above reference embodiment shown in the drawings has described the present invention.But should be appreciated that the specific embodiment of Miao Shuing not is to limit the invention to disclosed concrete form here, the present invention should comprise interior all modifications, equivalent and the replacement scheme of spirit and scope of the invention that the accessory claim book is limited.
For example, Fig. 2, Fig. 3, device shown in Figure 4 can constitute by the computer system that is used for Industry Control, and this computer system can be finished any of Fig. 5,6,7,8 described control methods.In one embodiment, used current detecting unit, voltage detection unit, electric current comparing unit, voltage comparison unit and control module can be integrated in the single-chip microcomputer, thereby constitute the SCM system that can realize said method, this SCM system constitutes control system or its part of welding equipment.
Claims (13)
1. whether in welding process, detect the method for haircuts, comprising:
Monitor the size of welding current in real time;
When detected welding current surpasses higher limit A1, be judged as and haircuts take place and send the wire feeding motor stop signal;
When the welding current that detects is lower than lower limit A2, is judged as non-haircuts state and sends the wire feeding motor enabling signal.
2. according to the process of claim 1 wherein that A1, A2 are the empirical data that obtains in the actual welding engineering.
3. whether in welding process, detect the method for haircuts, comprising:
Monitor the size of welding current and weldingvoltage in real time;
When detected welding current surpasses higher limit A1 and weldingvoltage and is lower than lower limit V1, be judged as and haircuts take place and send the wire feeding motor stop signal;
When the welding current that detects is lower than lower limit A2 and welding voltage value and is higher than higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
4. according to the method for claim 3, wherein A1, A2, V1, V2 are the empirical data that obtains in the actual welding engineering.
5. welding controller comprises:
Current detecting unit is used for monitoring in real time the size of welding current;
The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result;
Control module according to the comparative result of electric current comparing unit, when detecting welding current above higher limit A1, is judged as and haircuts takes place and send the wire feeding motor stop signal; When detecting welding current and be lower than lower limit A2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
6. according to the device of claim 5, also comprise the unit is set, be used to be provided with the occurrence of A1 and/or A2 in actual use.
7. welding controller comprises:
Current detecting unit is used for monitoring in real time the size of welding current;
Voltage detection unit is used for monitoring in real time the size of weldingvoltage;
The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result;
Voltage comparison unit is used for and will compares from the voltage of voltage detection unit and a reference value lower limit V1 and higher limit V2, and the output comparative result;
Control module, reception is from the comparative result of electric current comparing unit and voltage comparison unit, welding current surpasses higher limit A1 and weldingvoltage is lower than when any condition satisfies among the lower limit V1 if detect, and is judged as haircuts to take place and send the wire feeding motor stop signal; Welding current is lower than lower limit A2 and weldingvoltage is higher than when any condition satisfies among the higher limit V2 if detect, and is judged as non-haircuts state and sends the wire feeding motor enabling signal.
8. according to the device of claim 7, also comprise the unit is set, be used for being provided with at least one occurrence of A1, A2, V1, V2 in actual use.
9. welding controller comprises:
Current detecting unit is used for monitoring in real time the size of welding current;
Voltage detection unit is used for monitoring in real time the size of weldingvoltage;
The electric current comparing unit is used for and will compares from the electric current of current detecting unit and a reference value higher limit A1 and lower limit A2, and the output comparative result;
Voltage comparison unit is used for and will compares from the voltage of voltage detection unit and a reference value lower limit V1 and higher limit V2, and the output comparative result;
Control module receives the comparative result from electric current comparing unit and voltage comparison unit, if when detecting welding current and surpassing higher limit A1 and weldingvoltage and be lower than lower limit V1, is judged as and haircuts takes place and send the wire feeding motor stop signal; If when detecting welding current and being lower than lower limit A2 and weldingvoltage and being higher than higher limit V2, be judged as non-haircuts state and send the wire feeding motor enabling signal.
10. according to the device of claim 9, also comprise the unit is set, be used for being provided with at least one occurrence of A1, A2, V1, V2 in actual use.
11. a welding equipment comprises
Arc ignition control circuit;
Output detection circuit;
Wire feeding motor; And
According to each welding controller among the claim 5-6, be used to control the startup of wire feeding motor and stop.
12. a welding equipment comprises
Arc ignition control circuit;
Output detection circuit;
Wire feeding motor; And
According to each welding controller among the claim 7-10, be used to control the startup of wire feeding motor and stop.
13. according to the welding equipment of claim 12, wherein
Current detecting unit, voltage detection unit, electric current comparing unit, voltage comparison unit, control module are integrated in a SCM system.
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| CN2007101262020A CN101327542B (en) | 2007-06-22 | 2007-06-22 | Control method and apparatus for processing striking and sticking thread of welding |
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| CN2007101262020A CN101327542B (en) | 2007-06-22 | 2007-06-22 | Control method and apparatus for processing striking and sticking thread of welding |
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| JP5410220B2 (en) * | 2009-09-29 | 2014-02-05 | 株式会社ダイヘン | Arc welding method and arc welding system |
| CN109128442A (en) * | 2018-08-24 | 2019-01-04 | 上海沪工焊接集团股份有限公司 | A kind of wire feed automatic cut-off system and its method |
| US11420285B2 (en) * | 2019-04-30 | 2022-08-23 | Illinois Tool Works Inc. | Systems and methods for automated cleaning of wire electrodes after welding |
| JP2021020232A (en) * | 2019-07-26 | 2021-02-18 | 株式会社ダイヘン | Covered arc welding control method |
| JP7414478B2 (en) * | 2019-11-11 | 2024-01-16 | ファナック株式会社 | Welding detection device and arc welding robot system |
| JP2022157957A (en) * | 2021-04-01 | 2022-10-14 | トヨタ自動車株式会社 | Arc stud welding device and arc stud welding method |
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| CN1613592A (en) * | 2004-11-25 | 2005-05-11 | 上海交通大学 | Digital controlling method for communicating structure of short-circuit transient COz weld |
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| CN1613592A (en) * | 2004-11-25 | 2005-05-11 | 上海交通大学 | Digital controlling method for communicating structure of short-circuit transient COz weld |
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