WO2017063252A1 - Appareil à souder à électrode consommable à courant alternatif et à courant continu - Google Patents

Appareil à souder à électrode consommable à courant alternatif et à courant continu Download PDF

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Publication number
WO2017063252A1
WO2017063252A1 PCT/CN2015/095870 CN2015095870W WO2017063252A1 WO 2017063252 A1 WO2017063252 A1 WO 2017063252A1 CN 2015095870 W CN2015095870 W CN 2015095870W WO 2017063252 A1 WO2017063252 A1 WO 2017063252A1
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WIPO (PCT)
Prior art keywords
module
welding
input
current
switch module
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Application number
PCT/CN2015/095870
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English (en)
Chinese (zh)
Inventor
刘昇澔
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刘昇澔
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Application filed by 刘昇澔 filed Critical 刘昇澔
Publication of WO2017063252A1 publication Critical patent/WO2017063252A1/fr

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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
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • 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
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • 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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit

Definitions

  • the invention relates to the field of welding machines, in particular to an AC-DC welding machine.
  • the conventional fusion welding machine adopts only the direct welding mode, the welding wire is connected to the positive pole of the welding torch, the workpiece is connected to the negative electrode in the welding torch, and the fuse speed is fast, but the heat of the molten welding wire and the molten base material cannot be controlled; therefore, when welding the thin plate, A certain amount of heat is needed to melt the welding wire. At this time, it is easy to cause the input heat of the base material to be too large, and the plate is easily deformed and perforated. In the case of thick plate welding, since the base material requires a large input heat, the fuse time needs to be followed by the mother. The material melting time is matched and the welding speed is reduced.
  • the present invention provides an AC-DC melting electrode welder to effectively improve welding quality and welding efficiency.
  • an AC/DC melting pole welding machine the welding machine comprises a melting pole welding power source module and a welding gun, and an AC/DC conversion control module is connected between the melting pole welding power source module and the welding gun And the input end of the welding torch establishes a feedback connection with the molten-pole welding power supply module to feed back the output current parameter of the welding torch and the output voltage parameter to the molten-pole welding power supply module;
  • the AC/DC conversion control module is used for Controlling the conversion of the positive and negative polarities of the two output ends of the molten-pole welding power supply module, and controlling the time ratio between the positive-on time and the negative-on time of the two output ends of the molten-pole welding power supply module, thereby realizing an AC-DC melting electrode welder AC or DC welding to control the heat demand of the workpiece and the wire to achieve the best welding results, effectively improve the welding quality and welding speed.
  • the AC/DC conversion control module has an input positive terminal, an input negative terminal, a first output terminal, and a second output terminal
  • the AC/DC conversion control module includes a first switch module, a second switch module, and a third switch. a module and a fourth switch module; the input positive terminal, the input end of the first switch module, the output end of the first switch module, the input end of the second switch module, the output end of the second switch module, and the input negative terminal Connected in sequence, the input positive end, the input end of the third switch module, the output end of the third switch module, the input end of the fourth switch module, the output end of the fourth switch module, and the input negative end are sequentially connected; One end of the third switch module and the fourth switch module is connected to the first output end, and one end of the third switch module and the fourth switch module is connected to the second output end.
  • an LC series circuit is connected in series between the second output end and the interconnected end of the third switch module and the fourth switch module.
  • the molten-pole welding power supply module comprises a power input module, a DC constant voltage module, a chopper control module, and a constant current feedback module, which are sequentially connected, and further includes a control system module, a current sampling module and a voltage sampling module;
  • the input end of the current sampling module has at least two current input interfaces, wherein one current input interface is connected to the output end of the DC constant voltage module, and the other current input interface is connected to the input end of the welding gun;
  • the input end of the voltage sampling module is at least
  • the utility model has two voltage input interfaces, wherein one voltage input interface is connected with the output end of the DC constant voltage module, and another voltage input interface is connected with the input end of the welding gun; the output end of the current sampling module and the output end of the voltage sampling module are both Control system module connection.
  • the molten-pole welding power supply module further includes a human-machine interface operation and display module connected to the control system module; preferably, the control system module is provided with a synchronous communication interface for communicating with an external device.
  • the AC/DC melting electrode welding machine provided by the invention adds an AC/DC conversion control module to the original DC melting electrode welding machine to control the transformation of the positive and negative polarities of the two output ends of the welding machine, and controls the two output ends of the welding machine.
  • the ratio of the positive on-time to the negative on-time is achieved to achieve AC or DC welding of the AC-DC fusion welder, thereby controlling the heat demand of the workpiece and the wire to achieve the best welding effect, thereby effectively improving the welding quality and welding. speed.
  • FIG. 1 is a schematic block diagram of an AC/DC melting electrode welder according to an embodiment of the present invention
  • FIG. 2 is a schematic block diagram showing a specific circuit principle of the AC-DC welding machine according to the embodiment of the present invention
  • FIG. 3 is a schematic block diagram of an AC/DC conversion control module according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a circuit principle of the AC/DC conversion control module according to an embodiment of the present invention.
  • an AC-DC fusion welding machine includes a molten-pole welding power supply module and a welding torch, and an AC-DC conversion control module is connected between the molten-pole welding power supply module and the welding torch, and The input end of the welding torch establishes a feedback connection with the molten-pole welding power supply module to feed back the output current parameter of the welding torch and the output voltage parameter to the molten-pole welding power supply module;
  • the AC/DC conversion control module is configured to control the Converting the positive and negative polarities of the two output ends of the molten-pole welding power supply module, and controlling the time ratio between the positive-on time and the negative-on time of the two output ends of the molten-pole welding power supply module, thereby realizing the alternating current of the AC-DC fusion welding machine or DC welding, which controls the heat demand of the workpiece and the wire to achieve the best welding effect, effectively improve the welding quality and welding speed.
  • the molten-pole welding power supply module preferably includes a power input module, a DC constant voltage module, a chopper control module, and a constant current feedback module, which are sequentially connected, and further includes a control system module, a current sampling module, and a voltage sampling module;
  • the input end of the current sampling module has at least two current input interfaces, wherein one current input interface is connected to the output end of the DC constant voltage module, and the other current input interface is connected to the input end of the welding gun;
  • the input end of the module has at least two voltage input interfaces, wherein one voltage input interface is connected with the output end of the DC constant voltage module, and the other voltage input interface is connected with the input end of the welding gun; the output end of the current sampling module and the voltage sampling module The outputs are connected to the control system module.
  • the molten-pole welding power supply module further includes a human-machine interface operation and display module connected to the control system module; preferably, the control system module is provided with a synchronous communication interface for communicating with an external device.
  • the power input module the DC constant voltage module, the chopper control module, the constant current feedback module, the current sampling module, the voltage sampling module, the control system module, the human-machine interface operation, and the display module are all functions.
  • the modules are all prior art, and their working principle or specific components thereof will not be described in detail herein.
  • multiple functional modules may be integrated into one circuit module according to actual needs to implement their corresponding functions, or the functions of some functional modules may not only use existing hardware circuits or
  • the device can realize its function, and can also be realized by combining hardware and software; for example, the current sampling module and the voltage sampling module can be integrated in the control system module, or the functions of the current sampling module and the voltage sampling module can pass through the hardware in the control system module. It can be realized by means of software combination; it can also be realized by dividing one function module into multiple function modules, such as dividing man-machine interface operation and display module into man-machine interface operation module, man-machine interface operation module, two function modules, etc. .
  • the functional modules in the present invention are not limited to any particular combination of hardware and software; likewise, the AC/DC conversion control module is not limited to hardware, or hardware and software.
  • the AC/DC conversion control module is further described in detail below. As shown in FIG. 3, the AC/DC conversion control module has an input positive terminal, an input negative terminal, a first output terminal, and a second output terminal.
  • the AC-DC conversion control module includes a first switch module, a second switch module, a third switch module, and a fourth switch module; the input positive end, the input end of the first switch module, the output end of the first switch module, and the The input end of the second switch module, the output end of the second switch module, and the input negative end are sequentially connected, and the input positive end, the input end of the third switch module, the output end of the third switch module, and the fourth switch module An input end, an output end of the fourth switch module, and the input negative end are sequentially connected; an interconnected end of the third switch module and the fourth switch module is used as the first output end, and the third switch module is An interconnected end of the fourth switch module serves as the second output.
  • an LC series circuit is connected in series between the second output end and one end of
  • the first switch module, the second switch module, the third switch module and the fourth switch module are the same switch circuit, and the switch circuit comprises a switching power device, a capacitor and a diode, and the capacitors are connected in parallel Connected between the drain and the source of the switching power device, or the capacitor is connected in parallel between the collector and the emitter of the switching power device; the anode of the diode and the drain of the switching power device a pole or a collector connection, a cathode of the diode being connected to a source or an emitter of the switching power device; a drain or a collector of the switching power device as an input terminal of each switching module, the switching power device A source or an emitter is used as an output of each switch module; a gate or a base of the switching power device is connected to a switch signal source for controlling whether the switching power device is turned on or off.
  • the switching power device is preferably a MOS tube or a triode.
  • FIG. 4 is a schematic diagram of a specific circuit of the AC/DC conversion control module.
  • the switching power device in this embodiment uses a MOS transistor as a specific embodiment; as shown in FIG. 4, the AC/DC conversion control
  • the module includes MOS tubes Q1, Q2 Q3, Q4, diodes D1, D2, D3, D4, capacitors C1, C2, C3, C4, C5 and inductor L1.
  • the inductor L1 and the capacitor C5 are connected in series to form the LC series circuit.
  • the connection relationship of components such as MOS transistors, diodes, and capacitors is as shown in FIG. 4 and will not be described in detail herein.
  • the gate of each MOS transistor is connected to a switching signal source (not shown in FIG. 4) for controlling the on or off of each MOS transistor.
  • the voltage UAB of the two output terminals of the AC/DC conversion control module is always positive (DC); and when the MOS transistors Q2 and Q3 are turned on, Q1 and Q4 are turned off. , the voltage U of the two output ends of the AC/DC conversion control module AB is always negative (DC); when the above two states are switched in turn, the voltage U AB of the two output terminals of the AC/DC conversion control module The positive and negative voltages are also converted to achieve AC voltage characteristics.
  • the time ratio between the positive turn-on time and the negative turn-on time of the two output ends of the molten-pole welding power supply module can be controlled, and then according to the specific welding material requirements. Control the heat demand of the workpiece and the wire to achieve the best welding effect and effectively improve the welding quality and welding speed.
  • the thin plate material when welding the thin plate material, by controlling the time ratio between the positive on-time and the negative on-time of the two output ends of the molten-pole welding power supply module, that is, controlling the two poles on the welding torch (ie, the melting pole for connecting with the welding wire) And the ratio of the positive on-time and the negative on-time of the solder joint on the welding gun to the solder material, the heat generated on the wire is large during soldering, and the solder material (ie, the base material) Less heat is generated to prevent deformation or perforation of the welding material, which effectively improves the welding quality; and when welding the thick plate material, by controlling the time ratio of the positive electrode on-time of the two poles on the welding torch to the time of the negative electrode on-time, in the welding When the heat generated on the welding material is large, the heat generated on the welding wire is also large, and the melting speed of the welding wire is increased, thereby effectively increasing the welding speed.

Abstract

L'invention concerne un appareil à souder à électrode consommable à courant alternatif et à courant continu, comprenant : un module d'alimentation électrique de soudage à électrode consommable et un pistolet de soudage. Un module de commande de transformation de courant alternatif et courant continu est branché entre le module d'alimentation électrique de soudage à électrode consommable et le pistolet de soudage, et une extrémité d'entrée du pistolet de soudage et du module d'alimentation électrique de soudage à électrode consommable établit une connexion de rétroaction de manière à renvoyer un paramètre de courant de sortie et un paramètre de tension de sortie du pistolet de soudage vers le module d'alimentation électrique de soudage à électrode consommable ; et le module de commande de transformation de courant alternatif et courant continu est utilisé pour commander la transformation entre les polarités positive et négative des deux extrémités de sortie du module d'alimentation électrique de soudage à électrode consommable, et commander un rapport de temps entre un temps de connexion d'électrode positive et un temps de connexion d'électrode négative des deux extrémités de sortie du module d'alimentation électrique de soudage à électrode consommable afin de réaliser un soudage à courant alternatif ou à courant continu avec l'appareil à souder à électrode consommable à courant alternatif et à courant continu de façon à commander une exigence de chaleur d'une pièce à usiner et d'un fil de soudure pour obtenir le meilleur effet de soudage et améliorer efficacement la qualité du soudage et la vitesse de soudage.
PCT/CN2015/095870 2015-10-14 2015-11-28 Appareil à souder à électrode consommable à courant alternatif et à courant continu WO2017063252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510660174.5 2015-10-14
CN201510660174.5A CN105149748B (zh) 2015-10-14 2015-10-14 一种交直流熔化极焊机

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WO2017063252A1 true WO2017063252A1 (fr) 2017-04-20

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4508954A (en) * 1984-05-18 1985-04-02 Oxo Welding Equipment Co., Inc. Portable arc voltage wirefeed welding system
JPH01143768A (ja) * 1987-11-30 1989-06-06 Matsushita Electric Ind Co Ltd 交直両用アーク溶接機
US5410126A (en) * 1994-05-02 1995-04-25 Miller; Norman O. Portable AC/DC wire feed welder
CN2226507Y (zh) * 1995-03-07 1996-05-08 张亚军 交直流电焊机焊接电流遥控调节装置
CN2496588Y (zh) * 2001-03-12 2002-06-26 梁宝典 一种改进的多功能氢氧焊割机
CN104014904A (zh) * 2014-04-15 2014-09-03 刘文斌 可自动调整焊接电流的焊接设备和焊接电流控制方法
CN204018921U (zh) * 2014-04-15 2014-12-17 刘文斌 一种焊割设备
CN105127549A (zh) * 2015-09-08 2015-12-09 刘文斌 同一焊接周期内交直流焊接模式共存的焊机及其焊接方法
CN204913016U (zh) * 2015-09-08 2015-12-30 刘文斌 同一焊接周期内交直流焊接模式共存的焊机
CN105149751A (zh) * 2015-10-14 2015-12-16 刘昇澔 一种同时具有熔化极与非熔化极的焊接系统及其焊接方法
CN105149732A (zh) * 2015-10-14 2015-12-16 刘昇澔 一种熔化极焊机及其焊接方法

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