CN112719521A

CN112719521A - Arc striking control method and device for double-wire welding machine, medium and electronic equipment

Info

Publication number: CN112719521A
Application number: CN202011539197.8A
Authority: CN
Inventors: 谷孝满; 苏立虎
Original assignee: Panasonic Welding Systems Tangshan Co Ltd
Current assignee: Panasonic Welding Systems Tangshan Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-30

Abstract

The embodiment of the disclosure provides an arc starting control method, device, medium and electronic equipment for a twin-wire welding machine, and belongs to the field of pulsed gas metal arc welding twin-wire welding. The method comprises the following steps: starting timing from the closing of a double-wire welding gun switch, and controlling the main machine to enter a main arc striking stage when main machine current is detected after the main machine arc striking time; and starting timing from the closing of the twin-wire welding gun switch, and controlling the slave machine to weld to enter a slave arc striking stage when the current of the slave machine is detected after the delayed arc striking time of the slave machine and the arc striking time of the slave machine. Through the technical scheme provided by the embodiment of the disclosure, the welding quality and the welding efficiency can be improved when the double-wire welding machine performs welding.

Description

Arc striking control method and device for double-wire welding machine, medium and electronic equipment

Technical Field

The disclosure relates to the field of pulse gas metal arc welding twin-wire welding, in particular to an arc starting control method and device for a twin-wire welding machine, a computer readable storage medium and electronic equipment.

Background

In monofilament welding, the electric arc generated in the monofilament arcing stage is difficult to control, and the generated electric arc is extremely easy to interfere. In the twin-wire welding process, when two welding machines are controlled to carry out twin-wire arcing, two arcs generated in the corresponding twin-wire arcing stage can interfere with each other, so that the twin-wire arcing stage becomes unstable, obvious welding vibration can be generated, and large welding spatters can be generated to influence the arcing and welding effects, thereby causing the influence on the welding quality in the arcing stage due to poor contact between the welding machines and welding workpieces.

Therefore, in order to solve the above-mentioned problems, a method, a control device, a computer-readable storage medium, and an electronic device for controlling arc striking of a twin-wire welder are needed.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosed embodiment aims to provide an arc starting control method, device, medium and electronic equipment for a double-wire welding machine, and further solves the problem of poor welding quality when the double-wire welding machine performs welding.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

The embodiment of the disclosure provides an arc starting control method for a twin-wire welding machine, which comprises the following steps: starting timing from the closing of a double-wire welding gun switch, and controlling the main machine to enter a main arc striking stage when main machine current is detected after the main machine arc striking time; and starting timing from the closing of the twin-wire welding gun switch, and controlling the slave machine to weld to enter a slave arc striking stage when the current of the slave machine is detected after the delayed arc striking time of the slave machine and the arc striking time of the slave machine.

In some embodiments of the present disclosure, the method further comprises: the delayed arc starting time of the slave computer is greater than or equal to the arc starting time of the master computer.

In some embodiments of the present disclosure, the method further comprises: the delayed arc striking time of the slave computer is more than or equal to the sum of the arc striking time of the master computer and the time of the main arc striking stage.

In some embodiments of the present disclosure, the method further comprises: the delayed arc striking time of the slave computer is less than the sum of the arc striking time of the master computer and the time of the main arc striking stage.

In some embodiments of the present disclosure, the method further comprises: the delayed arc striking time of the slave computer is less than the arc striking time of the master computer.

In some embodiments of the present disclosure, the method further comprises: acquiring a value of a slave current of the slave; performing a mathematical fit on a change in the value of the slave current; and setting corresponding delayed arc starting time of the slave according to a current curve obtained by the mathematical fitting.

In some embodiments of the present disclosure, the method further comprises: the arc striking time of the host computer comprises the air feeding time in advance and the slow wire feeding time of the host computer; the slave arc starting time comprises the advanced air feeding time and the slow air feeding time of the slave.

The disclosed embodiment provides a twin wire welding machine, the twin wire welding machine includes: the main machine welding unit is used for welding through a main machine and comprises a main welding nozzle, a main machine air feeder and a main machine wire feeder; the main machine air feeder provides welding shielding gas through the main welding nozzle; the main wire feeder provides welding wires through the main welding nozzle; wherein the main welding nozzle is arranged on the main machine;

the slave welding unit is used for welding through a slave and comprises a slave welding nozzle, a slave air feeder and a slave air feeder; the slave air feeder provides welding shielding gas through the slave welding nozzle during welding; the slave wire feeder provides welding wire through the slave welding nozzle during welding; wherein the slave welding nozzle is arranged on the slave;

a welder power supply comprising a master power supply and a slave power supply, the master power supply for providing master current to the master welding unit and the slave power supply for providing slave current to the slave welding unit;

the welding control unit is used for storing a main welding current value, a main climbing speed, a main machine arc starting time, a secondary welding current value, a secondary climbing speed and a secondary machine delay arc starting time, and is electrically connected with the main machine welding unit, the secondary machine welding unit and the welding machine power supply;

and the welding control unit turns on the main machine power supply after the main machine arcing time, controls the main machine welding unit to enter a main arcing stage after receiving the main machine current, turns on the slave machine power supply after the slave machine delayed arcing time, and controls the slave machine welding unit to enter a slave arcing stage after receiving the slave machine current.

In some embodiments of the present disclosure, the twin wire welder further comprises: and the dual-wire welding gun switch is arranged between the host power supply and the host welding unit and between the slave power supply and the slave welding unit, the host power supply provides the host current for the host welding unit through the dual-wire welding gun switch, and the slave power supply provides the slave current for the slave welding unit through the dual-wire welding gun switch.

In some embodiments of the present disclosure, the twin wire welder further comprises: the display panel, display panel pass through communication interface with the welding control unit electricity is connected, through display panel can set for the main welding current value of host computer welding unit, the main climbing speed and the host computer time of arcing of host computer electric current, and set for from welding current value of follow welding unit, from climbing speed and the time of the time delay time of following of follow computer electric current.

The embodiment of the present disclosure provides a twin-wire welding machine arc starting control device, the twin-wire welding machine arc starting control device includes: a main controller; a slave controller; the timer starts timing from the closing of the twin-wire welding gun switch, sends a master timing signal to the master controller after the master arc striking time, and sends a slave timing signal to the master controller after the slave delayed arc striking time;

the current feedback device sends a main current signal to the main controller when detecting that the current of the host machine is detected; when the current feedback device detects that the current of the slave device is detected, a slave current signal is sent to the slave controller;

the main controller receives the main machine timing signal, turns on the main machine power supply to enable the current feedback device to send the main current signal, and controls the main machine welding unit to enter a main arc striking stage when the main controller receives the main current signal;

the slave controller receives the slave timing signal, turns on the slave power supply to cause the current feedback to send the slave current signal, and controls the slave welding unit to enter a slave arc starting stage when the slave controller receives the slave current signal.

The disclosed embodiments provide a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the dual wire welder arc starting control method as described in any of the above embodiments.

An embodiment of the present disclosure provides an electronic device, including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the at least one processor to implement the twin wire welder arc starting control method as described in any of the above embodiments.

In some embodiments of the present disclosure, when welding is performed by using a twin-wire welding machine, the master is controlled to arc after the arc striking time of the master, and the slave is controlled to arc after the arc striking time of the slave and the delayed arc striking time of the slave. The arc striking control method of the twin-wire welding machine provided by the embodiment of the disclosure is applied to twin-wire welding, and the welding quality and the welding efficiency are improved by controlling the host machine and the slave machine to strike arcs at different times.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1 illustrates a schematic structural diagram of a twin wire welder 100 of one embodiment of the present disclosure;

FIG. 2 illustrates a schematic view of a dual wire bonding mainframe of one embodiment of the present disclosure;

FIG. 3 illustrates a flow chart of a dual wire welder arc starting control method of one embodiment of the present disclosure;

FIG. 4 illustrates a flow chart of a dual wire welder arc starting control method of yet another embodiment of the present disclosure;

FIG. 5 illustrates a schematic structural diagram of an arc starting control apparatus 500 of a twin wire welder in accordance with an embodiment of the present disclosure;

FIG. 6 is a schematic diagram showing slave current variation of a related art twin wire welder;

FIG. 7 illustrates a schematic diagram of a dual wire welder arc starting control method of one embodiment of the present disclosure;

fig. 8 schematically illustrates a structural schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

The following detailed description of exemplary embodiments of the disclosure refers to the accompanying drawings.

FIG. 1 illustrates a schematic structural diagram of a dual wire welder 100 of one embodiment of the present disclosure. As shown in FIG. 1, FIG. 1 provides a schematic diagram of the main structure of a twin wire welder. In fig. 1, the host of the dual wire welder includes a display panel 101, a communication interface 102, a host welding control system 103, and a host welding unit 105, wherein the host welding control system 103 includes a host power supply 104, a timer 106, a host controller 107, and a current feedback 108, and the host welding unit 105 includes a host welder 109 and a host wire feeder 110. In the embodiment of the present disclosure, the communication interface 102 is an interface for performing communication between the display panel 101 and the main controller 107, and may be ethernet, wireless, USB (Universal Serial Bus), or optical fiber. The display panel 101 may be a mechanical button panel or a liquid crystal panel. If the display panel 101 is a mechanical button panel, the welding parameters can be input through the buttons. If the display panel 101 is a liquid crystal panel, the welding parameters can be input through an external device, such as a keyboard, a mouse, etc. The welding parameters can comprise the time for starting the arc of the host computer, the time for delaying the starting of the arc of the slave computer and the time for starting the arc of the slave computer.

In the embodiment of the present disclosure, the master arcing time, the slave arcing delay time, and the slave arcing time are set through the display panel 101, and the master controller 107 receives the set master arcing time and the slave arcing delay time through the communication interface. After a twin-wire welding gun switch (not shown) is closed, the main controller 107 controls the timer 106 to start timing, the timer 106 sends a main machine timing signal to the main controller 107 after the main machine arcing time, the main controller 107 controls the main machine power supply 104 to be turned on according to the received main machine timing signal, so that the main machine power supply 104 provides main machine current for the main machine welding unit 105, and simultaneously controls the main machine wire feeder 110 to start working so as to provide welding wires required by welding for the main machine welding unit 105. When the current feedback device 108 detects the current of the main machine, a main current signal is sent to the main controller 107, and the main controller 107 controls the main machine to enter a main arc striking stage according to the main current signal.

In one embodiment, the host welding unit 105 may include any type of primary electric welder 109, such as an ac arc welder, a dc welder, an argon arc welder, a carbon dioxide shield welder, a butt welder, a spot welder, a submerged arc welder, a high frequency weld, a flash butt welder, a press welder, a butt welder, and a laser welder.

Fig. 2 shows a schematic view of a dual wire bonding mainframe of one embodiment of the present disclosure. As shown in fig. 2, fig. 2 provides a schematic view of a bonding configuration of a dual wire bonder. In fig. 2, the twin wire welding host includes a welding workpiece 201, a welding wire 203, a main welding nozzle 204, and a wire feeder 210. Wherein the main welding showerhead 204 includes a contact tip 206, a welder housing 207, a weld 208, and a weld puddle 209, and a welding shielding gas 205 may also be provided through the main welding showerhead 204. Wire feeder 210 includes a wire feed wheel 211 and a wire drum 212.

In one embodiment, after the welding gun switch is closed, the gas feeding stage is entered, the control system controls the welding shielding gas cylinder to feed the welding shielding gas 205 to the main welding nozzle 204, and then the wire feeding stage is entered, the control system feeds the welding wire 203 to the main welding nozzle 204 through the wire feeder 210, wherein the main power supply 104 is in contact with the welding wire 203 through the contact tip 206, the welding wire 203 and the welding workpiece 201 are melted by the high-temperature arc generated when the positive electrode and the negative electrode of the main power supply 104 are momentarily short-circuited, and the melted welding wire 203 is cooled and solidified at the welding seam 208 of the welding workpiece 201 to achieve the purpose of welding.

In the disclosed embodiment, the twin-wire welding torch switch is closed, and the twin-wire welding host enters the pre-gas feeding stage, in which the welding shielding gas 205 is provided for the twin-wire welding host. Then, a slow wire feeding stage is entered, in which the wire feeder 210 starts to work, and the main welding nozzle 204 is continuously supplied with the welding wire 203 by the mechanical rolling action between the wire feeding wheel 211 and the wire reel 212. After the time of the main machine arcing, the main machine power supply 104 is turned on to supply the main machine current, and when the contact tip 206 detects the main machine current, the main machine enters a main arcing stage to generate an arc (not shown) of the main machine. After the arc is stabilized, a weld puddle 209 may be formed on the welding workpiece 201, the weld puddle being located at the weld 208 on the welding workpiece 201, the twin wire welding machine melting the wire in the form of a droplet in the puddle, the wire 203 cooling in the puddle, the wire 203 changing from the droplet form to a solid form to cover the weld 208, completing the weld to the weld. Wherein the soldering enclosure 207 is to be kept grounded during soldering.

In one embodiment, the welding shielding gas 205 is a gas used to shield the welding wire 203 during a welding process, which may protect the welding wire 203 during welding from outside gases. The welding shielding gas 205 may be an inert gas that is chemically stable and does not participate in the reaction during the high-temperature and high-pressure chemical reaction.

In one embodiment, solid wire gas shielded welding is illustrated as twin wire welding. Solid wire Gas shielded Welding includes MIG Welding (Melt Inert-Gas Welding), MAG Welding (Metal Active Gas Arc Welding), and CO₂And (6) welding. MIG welding uses a consumable electrode, an outer gas as an arc medium, and protects metal droplets, weld pool and high-temperature metal in the weld zone, and is an inert gas (e.g. Ar or He) shielded arc welding method using a solid wire, aGenerally, 1% oxygen is added into argon to improve the stability of the electric arc; MAG welding is a shielded welding method using a solid wire by argon-rich mixed gas shielded arc welding, in which a small amount of an oxidizing gas (e.g., oxygen, carbon dioxide, or a mixture thereof) is generally added to argon gas to obtain an argon-rich mixed gas in which argon gas is generally present in a large proportion, and for example, the argon-rich mixed gas may include 80% of Ar and 20% of CO₂Or 80% Ar, 15% CO₂And 5% of O₂；CO₂Welding is CO using solid wire₂And (4) gas shielded welding.

In one embodiment, the welder housing 207 is grounded prior to closing the torch switch, which prevents the host power supply 104 from accidentally shocking the operator due to voltage rise or leakage during welding caused by an unexpected fault, thereby circumventing the potential risk of welding.

In one embodiment, wire feed wheel 211 and wire drum 212 are mechanical components, such as gears or rolling bearings, that enable rolling wire feed.

In one embodiment of the disclosure, an arc starting control method for a twin-wire welding machine is provided to optimize the problem of poor welding quality in the related welding technology. FIG. 3 illustrates a flow chart of a dual wire welder arc starting control method of one embodiment of the present disclosure. As shown in fig. 3, the method may include, but is not limited to, the following steps:

in S310, timing is started from the closing of the twin-wire welding gun switch, and after the arc striking time of the main machine is over, when the current of the main machine is detected, the main machine is controlled to be in a main arc striking stage.

In one embodiment, the twin-wire welding gun switch is closed, the timer starts to time, the power supply of the main machine is turned on after the main machine arcing time, when the main machine current is detected, the main machine starts to arc, the main arcing stage is started, the welding current climbs to the main welding current value from 0 according to the set main climbing speed, and then the main machine starts to weld.

In S320, the slave welding is controlled to enter the slave arc striking stage when the slave current is detected after the slave delayed arc striking time and the slave arc striking time have elapsed since the twin-wire welding gun switch is turned on.

In one embodiment, the twin-wire welding gun switch is closed, the timer starts to time, the power supply of the slave machine is turned on after the arc striking time of the slave machine and the delayed arc striking time of the slave machine are passed, when the current of the slave machine is detected, the slave machine starts to strike the arc and enters the slave arc striking stage, and after the welding current climbs from 0 to the slave welding current value according to the set climbing speed, the slave machine starts to weld.

FIG. 4 illustrates a flow chart of a dual wire welder arc starting control method of yet another embodiment of the present disclosure. As shown in fig. 4, the method may include, but is not limited to, the following steps:

in S410, timing is started from the closing of the twin-wire welding gun switch, and when the current of the main machine is detected after the arc striking time of the main machine, the main machine is controlled to be in a main arc striking stage.

In S420, the slave welding is controlled to enter the slave arc striking stage when the slave current is detected after the slave delayed arc striking time and the slave arc striking time have elapsed since the twin-wire welding gun switch is turned on.

In S430, the slave delayed arc starting time is greater than or equal to the master arc starting time.

Wherein S410-S420 refer to S310-S320 of the embodiment of fig. 3, and S430 is specifically described as follows:

in one embodiment, the slave delayed arc starting time is greater than or equal to the master arc starting time, which may include: and setting the delayed arc striking time of the slave machine to be greater than the arc striking time of the host machine, so as to realize the arc striking of the slave machine after the arc striking of the host machine. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. Because the delayed arcing time of the slave is greater than the arcing time of the master, after the delayed arcing time of the slave, the master completes arcing, the timer continues to time, and when the time continuously timed by the timer is equal to the arcing time of the slave, the slave starts arcing. The embodiment of the disclosure realizes the simultaneous arcing of the host and the slave, and avoids the welding interference caused by the simultaneous arcing of the host and the slave.

In one embodiment, the slave computer delayed arc starting time is greater than or equal to the master computer arc starting time, and may further include: and setting the delayed arc striking time of the slave machine to be equal to the arc striking time of the host machine, so as to realize the arc striking of the slave machine after the arc striking of the host machine. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. The delayed arcing time of the slave is equal to the arcing time of the master, the master starts arcing after the delayed arcing time of the slave, the timer continues to time, and when the time continuously timed by the timer is the arcing time of the slave, the slave starts arcing. The embodiment of the disclosure also realizes the simultaneous arcing of the host and the slave, and avoids the welding interference caused by the simultaneous arcing of the host and the slave.

In one embodiment, the slave delayed arc starting time being greater than or equal to the master arc starting time may further include: the delayed arc striking time of the slave computer is more than or equal to the sum of the arc striking time of the master computer and the time of the main arc striking stage. In the embodiment of the disclosure, the delayed arc starting time of the slave computer is set to be greater than the sum of the arc starting time of the master computer and the time of the master arc starting stage. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. Because the delayed arc striking time of the slave machine is greater than the sum of the arc striking time of the master machine and the time of the main arc striking stage, the master machine finishes arc striking after the delayed arc striking time of the slave machine, enters the main arc striking stage and starts normal welding. And the timer continues to count time, and when the time counted by the timer is the arcing time of the slave, the slave starts to arc.

In one embodiment, the slave delayed arc starting time being greater than or equal to the master arc starting time may further include: the delayed arc striking time of the slave computer is more than or equal to the sum of the arc striking time of the master computer and the time of the main arc striking stage. In the embodiment of the disclosure, the delayed arc starting time of the slave computer is set to be equal to the sum of the arc starting time of the master computer and the time of the master arc starting stage. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. Because the delayed arc striking time of the slave is equal to the sum of the arc striking time of the master and the time of the main arc striking stage, after the delayed arc striking time of the slave, the master completes the arc striking and enters the main arc striking stage. And the timer continues to count time, and when the time counted by the timer is the arcing time of the slave, the slave starts to arc.

In one embodiment, the slave delayed arc starting time being greater than or equal to the master arc starting time may further include: the delayed arc striking time of the slave computer is less than the sum of the arc striking time of the master computer and the time of the main arc striking stage. In the embodiment of the disclosure, the delayed arcing time of the slave is set to be greater than the arcing time of the master, and the delayed arcing time of the slave is set to be less than the sum of the arcing time of the master and the time of the master arcing stage. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. Because the delayed arcing time of the slave is greater than the arcing time of the master and less than the sum of the arcing time of the master and the time of the main arcing stage, the master completes the arcing after the delayed arcing time of the slave. And the timer continues to count time, and when the time counted by the timer is the arcing time of the slave, the slave starts to arc.

In one embodiment, the slave delayed arc starting time being greater than or equal to the master arc starting time may further include: the delayed arc striking time of the slave computer is less than the sum of the arc striking time of the master computer and the time of the main arc striking stage. In the embodiment of the disclosure, the delayed arcing time of the slave is set to be equal to the arcing time of the master, and the delayed arcing time of the slave is smaller than the sum of the arcing time of the master and the time of the master arcing stage. When the double-wire welding gun switch is closed, the timer starts to time, and the main machine starts to strike arcs after the main machine arcing time. Because the delayed arcing time of the slave is equal to the arcing time of the master and is less than the sum of the arcing time of the master and the time of the main arcing stage, the master completes the arcing after the delayed arcing time of the slave. And the timer continues to count time, and when the time counted by the timer is the arcing time of the slave, the slave starts to arc.

In one embodiment, the slave delayed arc start time is less than the master arc start time. In the embodiment of the disclosure, the arcing time of the master machine is equal to the arcing time of the slave machine, the arcing time of the master machine and the arcing time of the slave machine are both greater than 0, and the delayed arcing time of the slave machine is set to be less than the arcing time of the master machine. When the double-wire welding gun switch is closed, the timer starts to time, after the delayed arcing time of the slave machine, the main machine does not start arcing, the timer continues to time, and before the time continuously timed by the timer is equal to the arcing time of the main machine, the main machine already starts arcing. And when the time kept by the timer is equal to the arcing time of the master machine, the slave machine starts arcing.

In one embodiment, a value of a slave current of the slave is obtained; performing a mathematical fit on a change in the value of the slave current; and setting corresponding delayed arc starting time of the slave according to a current curve obtained by the mathematical fitting. When the welding material, the diameter of the welding wire and the welding shielding gas used for the double-wire welding are kept for a certain time, the corresponding time delay of the starting of the secondary machine can be obtained.

In the embodiment of the present disclosure, the material of the welding material and the welding shielding gas are used as constants, the diameter of the welding wire is used as a variable, and the arc starting delay time of the slave machine corresponding to each diameter of the welding wire is obtained as an actual delay value. Based on the actual delay value, the variation trend of the slave current under different welding conditions can be obtained through measurement. The trend is mathematically fitted by mathematical means. For example, when the variation trend is linear, a one-time fitting method may be used to obtain the predicted variation trend and thus the fitted virtual delay value. When the variation trend shows nonlinearity, a quadratic fitting method or a multiple fitting method can be used to obtain the fitted variation trend so as to obtain the fitted virtual delay value. According to the technical scheme provided by the embodiment of the disclosure, the virtual delay value of the slave arc starting delay time can be obtained based on the existing actual delay value of the slave arc starting delay time in a fitting mode, so that the change trend of the slave current is obtained based on the virtual delay value, and the current value required by the slave welding can be set according to the change trend of the fitted virtual delay value when the actual delay value does not exist.

In one embodiment, the host arc starting time comprises a pre-air feed time and a slow-air feed time of the host; the slave arc starting time comprises the advanced air feeding time and the slow air feeding time of the slave. After the double-wire welding gun switch is closed, the timer starts to time, meanwhile, the main machine air feeder and the main machine wire feeder start to work, within the arcing time of the main machine, the main machine air feeder provides welding shielding gas through the main welding nozzle, the main machine wire feeder provides welding wires for welding through the main welding nozzle, after the arcing time of the main machine, the welding shielding gas and the welding wires needed by welding are prepared, and the main machine starts to arc.

Embodiments of the dual wire welder arc starting control apparatus of the present disclosure are described below, which can be used to implement the dual wire welder arc starting control method of the present disclosure described above. For details which are not disclosed in the embodiments of the present disclosure, please refer to the embodiments of the arc starting control method of the twin-wire welding machine described above in the present disclosure.

Fig. 5 shows a schematic structural diagram of an arc starting control device 500 of the twin-wire welder according to one embodiment of the disclosure. As shown in fig. 5, the arc starting control device of the twin-wire welder of one embodiment of the present disclosure includes: a slave controller 502, a communication bus 504, a slave power supply 505, a timer 506, and a current feedback 507. The number of the timer 506 and the current feedback device 507 is only illustrative, and may be one or more, which is not limited in this disclosure.

In the embodiment of the present disclosure, a CAN field bus is taken as an example of the communication bus 504. The master and the slave CAN form a communication Network for cooperative control between the master and the slave through a Controller Area Network (CAN) field bus, and the master CAN interact with the slave through the CAN field bus. For example, when the master machine successfully starts the arc after the arc starting time of the master machine and is in a welding stable state, the master machine sends a state signal that the welding of the master machine is stable to the slave machine. And starting the arc striking from the slave after the arc striking delay time of the slave, and sending a stable welding state signal of the slave to the host through the CAN field bus.

In the embodiment of the present disclosure, the timer starts timing from the closing of the twin-wire welding gun switch, and sends a host timing signal to the main controller 107 after the host arc starting time elapses, the main controller 107 receives the host timing signal and then turns on the host power supply 104 to supply a host current to the host welding unit, the current feedback device sends a main current signal to the main controller 107 after detecting the host current, and when the main controller 107 receives the main current signal, the main controller starts arc starting, and when the host current reaches a main current welding value from 0 according to the main climbing speed, the host enters the main arc starting stage. After the slave machine delayed arc starting time passes, the timer sends a slave machine timing signal to the slave controller 502, after the slave controller 502 receives the slave machine timing signal, the slave machine power supply 505 is turned on to provide slave machine current for the slave machine welding unit, when the current feedback device detects that the slave machine current sends the slave current signal to the slave controller 502, the slave controller 502 receives the slave current signal, the slave machine is controlled to start arc starting, and when the slave machine current reaches a slave current welding value from 0 according to the slave slope climbing speed, the slave machine enters a slave arc starting stage.

Fig. 6 is a schematic diagram showing a change in slave current of a twin wire welder in the related art. As shown in fig. 6, fig. 6 provides a current profile of a slave using a dual wire welder simultaneous arc starting control method. And closing the double-wire welding gun switch to control the simultaneous arcing of the master machine and the slave machine, wherein in the embodiment of the disclosure, the arcing time of the master machine and the arcing time of the slave machine are both t 0. At the moment that the double-wire welding gun switch is closed, the power supply of the master machine and the power supply of the slave machine are simultaneously opened, the master machine and the slave machine enter an arc striking stage after t0, and the current in the master machine and the slave machine begins to climb from 0 to the welding current value at the set climbing speed to start welding. And after welding is finished, the power supply of the host computer and the power supply of the slave computer are turned off to finish welding work.

Fig. 6 shows the change of the current of the slave in the related art, and it can be seen that the master and the slave arc simultaneously in the related art. Two electric arcs generated when the host machine and the slave machine arc simultaneously start arc can be unstable, obvious shaking occurs, and great splashing is generated, so that the arc starting effect is influenced, and the welding quality in the arc starting stage is difficult to ensure. In order to solve the problem, the disclosure provides a control method for non-simultaneous arcing of a twin-wire welding machine, that is, in twin-wire welding, independent control output of each power supply is realized through two power supplies which are in communication, so as to ensure that waveforms output by the two power supplies have a phase difference of 180 degrees, and further obtain minimum arc interference generated by the two power supplies during welding. As shown in fig. 7, fig. 7 shows a schematic diagram of a dual wire welder arc starting control method of one embodiment of the present disclosure. In fig. 7, a schematic diagram of the current variation in a non-simultaneous arcing control method for a twin wire welder is provided.In FIG. 7, the host arc starting time t1 is (b)₁-a) slave delayed arc starting time T, and slave arc starting time T2 (b-b)₂) After the arc starts from the slave, the current of the slave is in the slave arc striking stage from 0 according to the ascending, the CD section is in the slave welding stable stage, after the arc starts from the slave, the current of the slave is in the slave arc striking stage from 0 according to the ascending, and the CD section is in the slave welding stable stage.

In the embodiment of the disclosure, when the twin-wire welding gun switch is closed, the main machine enters the main machine arcing time at the time a, the main machine arcing time t1 is ended at the time B, the main machine starts to enter the main arcing stage, the main machine current starts to climb to the main welding current value at the time C according to the set main climbing speed, the CD section is the main machine welding stabilization stage, the main machine finishes welding at the time D, and the main machine current gradually decreases until the time E is 0. Closing a double-wire welding gun switch, and enabling the slave to enter the slave at the moment a and delay the arcing time at the moment b₂And (4) ending the slave delayed arc starting time at the moment, entering the slave arc starting time t2, ending the slave arc starting time at the moment b, starting the slave arc starting stage, starting the slave current to climb to the slave welding current value at the moment c according to the set ramp-up speed, wherein the cd section is the slave welding stable stage, the slave finishes welding at the moment d, and the slave current is gradually reduced after the moment d until the moment e is 0.

In one embodiment, the slave delayed arc start time is less than the master arc start time. In the disclosed embodiment, the slave delayed arc starting time T may end in the AB segment. When the slave delayed arcing time T falls within T1, namely the slave delayed arcing time ends within the master arcing time. The host computer is in b₁And ending the arc striking time of the master machine at the moment, entering a master arc striking stage, ending the delayed arc striking time of the slave machine in the AB section by the slave machine, continuing to pass the arc striking time t2 of the slave machine, and entering a slave arc striking stage. And starting the arc striking from the slave after the arc striking delay time of the slave and the arc striking time of the slave, wherein the arc striking of the master is finished at the moment. The technical scheme provided by the embodiment of the disclosure realizes that the host computer and the slave computer do not start arcs at the same time, can improve the arc starting effect, and ensures the welding quality in the arc starting stage.

In one embodiment, the slave machineThe delayed arc starting time is greater than or equal to the arc starting time of the main machine, and the delayed arc starting time of the slave machine is less than the sum of the arc starting time of the main machine and the time of the main arc starting stage. In the disclosed embodiment, the slave delayed arc starting time T may end at the BC segment. The host computer is in b₁And ending the arc striking time of the host at the moment, entering a main arc striking stage at the BC section, ending the delayed arc striking time of the slave at the BC section by the slave, and not striking the arc by the host when the arc striking time of the host is not ended. And (4) continuing to count time, ending the main machine arcing time and starting the main machine arcing before the counting of the slave machine arcing time t2 is ended. And the slave machine enters the slave arc striking stage after the slave machine arc striking time t 2. For example, the carbon steel material is subjected to pulse welding, the diameter of a welding wire is 1.2mm, welding shielding gas is MAG gas, the obtained corresponding delayed arc starting time from the machine is 500ms, and the delayed end point is a BC section. The technical scheme provided by the embodiment of the disclosure realizes that the host and the slave are not arc-started at the same time, can reduce the interference during arc starting, improves the arc starting effect, and ensures the welding quality in the arc starting stage.

In one embodiment, the slave delayed arc starting time is greater than or equal to the master arc starting time, and the slave delayed arc starting time is greater than or equal to the sum of the master arc starting time and the master arc starting stage time. In the disclosed embodiment, the slave delayed arc starting time T may end at the CD segment. The host computer is in b₁And (4) ending the arc striking time of the main engine at the moment, and starting to stabilize the welding state from the moment C through the main arc striking stage of the BC section. The slave machine finishes the delayed arc striking time of the slave machine in the CD section, the master machine finishes the arc striking and stabilizes the welding at the moment, and the slave machine enters the slave arc striking stage after the slave machine continues to pass the arc striking time t 2. The technical scheme provided by the embodiment of the disclosure realizes that the host and the slave are not arc-started at the same time, can reduce the interference during arc starting, improves the arc starting effect, and ensures the welding quality in the arc starting stage.

FIG. 8 schematically illustrates an electronic device suitable for use in implementing embodiments of the present disclosure.

It should be noted that the electronic device 800 shown in fig. 8 is only an example, and should not bring any limitation to the functions and the scope of the embodiments of the present disclosure.

As shown in fig. 8, the electronic apparatus 800 includes a Central Processing Unit (CPU)801 that can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)802 or a program loaded from a storage section 208 into a Random Access Memory (RAM) 803. In the RAM 803, various programs and data necessary for system operation are also stored. The CPU 801, ROM 802, and RAM 803 are connected to each other via a bus 804. An input/output (I/O) interface 805 is also connected to bus 804.

The following components are connected to the I/O interface 805: an input portion 806 including a keyboard, a mouse, and the like; an output section 807 including a signal such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 808 including a hard disk and the like; and a communication section 809 including a network interface card such as a LAN card, a modem, or the like. The communication section 809 performs communication processing via a network such as the internet. A drive 810 is also connected to the I/O interface 805 as necessary. A removable medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 810 as necessary, so that a computer program read out therefrom is mounted on the storage section 808 as necessary.

In particular, the processes described below with reference to the flowcharts may be implemented as computer software programs, according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program containing program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network, and/or installed from a removable medium. The computer program, when executed by a Central Processing Unit (CPU), performs various functions defined in the system of the present application.

It should be noted that the computer readable storage medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer-readable signal medium may include a propagated data signal with computer-readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable storage medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present disclosure may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.

As another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer-readable storage medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method as described in the embodiments below. For example, the electronic device may implement the steps shown in fig. 3.

It should be noted that although in the above detailed description several units of the device for action execution are mentioned, this division is not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, in accordance with embodiments of the present disclosure. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims.

Claims

1. An arc starting control method for a twin-wire welding machine is characterized by comprising the following steps:

starting timing from the closing of a double-wire welding gun switch, and controlling the main machine to enter a main arc striking stage when main machine current is detected after the main machine arc striking time;

and starting timing from the closing of the twin-wire welding gun switch, and controlling the slave machine to weld to enter a slave arc striking stage when the current of the slave machine is detected after the delayed arc striking time of the slave machine and the arc striking time of the slave machine.

2. The method of claim 1, wherein the slave delayed arc time is greater than or equal to the master arc time.

3. The method of claim 2, wherein the slave delayed arc initiation time is greater than or equal to the sum of the master arc initiation time and the master arc initiation phase time.

4. The method of claim 2, wherein the slave delayed arc initiation time is less than the sum of the master arc initiation time and the time of the master arc initiation phase.

5. The method of claim 1, wherein the slave delayed arc time is less than the master arc time.

6. The method according to any one of claims 1-5, further comprising:

acquiring a value of a slave current of the slave;

performing a mathematical fit on a change in the value of the slave current;

and setting corresponding delayed arc starting time of the slave according to a current curve obtained by the mathematical fitting.

7. The method of claim 1, wherein the host arc starting time comprises a lead wire time and a slow wire time of the host; the slave arc starting time comprises the advanced air feeding time and the slow air feeding time of the slave.

8. A twin wire welder, comprising:

the main machine welding unit is used for welding through a main machine and comprises a main welding nozzle, a main machine air feeder and a main machine wire feeder; the main machine air feeder provides welding shielding gas through the main welding nozzle; the main wire feeder provides welding wires through the main welding nozzle; wherein the main welding nozzle is arranged on the main machine;

9. The twin wire welder of claim 8, further comprising:

and the dual-wire welding gun switch is arranged between the host power supply and the host welding unit and between the slave power supply and the slave welding unit, the host power supply provides the host current for the host welding unit through the dual-wire welding gun switch, and the slave power supply provides the slave current for the slave welding unit through the dual-wire welding gun switch.

10. The twin wire welder of claim 9, further comprising:

the display panel, display panel pass through communication interface with the welding control unit electricity is connected, through display panel can set for the main welding current value of host computer welding unit, the main climbing speed and the host computer time of arcing of host computer electric current, and set for from welding current value of follow welding unit, from climbing speed and the time of the time delay time of following of follow computer electric current.

11. An arc starting control device for a twin-wire welder, comprising:

a main controller;

a slave controller;

the timer starts timing from the closing of the twin-wire welding gun switch, sends a master timing signal to the master controller after the master arc striking time, and sends a slave timing signal to the master controller after the slave delayed arc striking time;

12. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 7.

13. An electronic device, comprising:

one or more processors;

storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out the method of any one of claims 1 to 7.