CN114749768A - Spot-moving wire feeding control method and terminal for welding machine - Google Patents

Spot-moving wire feeding control method and terminal for welding machine Download PDF

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Publication number
CN114749768A
CN114749768A CN202210332686.9A CN202210332686A CN114749768A CN 114749768 A CN114749768 A CN 114749768A CN 202210332686 A CN202210332686 A CN 202210332686A CN 114749768 A CN114749768 A CN 114749768A
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CN
China
Prior art keywords
wire feeding
power supply
welding
wire
inching
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Pending
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CN202210332686.9A
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Chinese (zh)
Inventor
不公告发明人
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Shanghai Hugong Electric Group Co Ltd
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Shanghai Hugong Electric Group Co Ltd
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Application filed by Shanghai Hugong Electric Group Co Ltd filed Critical Shanghai Hugong Electric Group Co Ltd
Priority to CN202210332686.9A priority Critical patent/CN114749768A/en
Publication of CN114749768A publication Critical patent/CN114749768A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/124Circuits or methods for feeding welding wire
    • B23K9/125Feeding of electrodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas

Abstract

The invention discloses a spot-moving wire feeding control method and a spot-moving wire feeding terminal of a welding machine, wherein when the spot-moving wire feeding control terminal works in a gas shielded welding mode, the welding machine is switched to a manual welding mode after a spot-moving wire feeding signal is received, a wire feeding motor power supply is started, and the wire feeding motor is controlled to run at the lowest speed; opening a main loop of a welding power supply, running a wire feeding motor at a set speed, establishing inching wire feeding time, and starting an inching wire feeding mode; detecting the current and voltage of a welding power supply, and finishing inching wire feeding when the current of the welding power supply is larger than a current reference value or the voltage is smaller than a voltage reference value, or inching wire feeding time is up, or inching wire feeding signals are finished; the main loop power supply is closed, the wire feeding motor is controlled to run at the minimum speed, after the second delay time, the power supply of the wire feeding machine is closed, the brake of the wire feeding machine is opened, and the working reliability of the wire feeding circuit is ensured; the wire feeding is stopped in time, so that the waste of welding wires is avoided; and after the inching wire feeding mode is finished, the output voltage and current of the welding power supply are continuously detected, and the hiccup effect is prevented.

Description

Spot-moving wire feeding control method and terminal for welding machine
Technical Field
The invention relates to the technical field of welding machine control, in particular to a spot-moving wire feeding control method and a spot-moving wire feeding control terminal for a welding machine.
Background
Consumable electrode gas shielded welding machines are commonly used in industrial production because of their good welding quality and high welding efficiency. Because of the requirement of welding characteristics, the gas metal arc welding machine consists of a welding power supply and a wire feeding mechanism, and different welding currents in actual production need different constant arc voltages and constant wire feeding speeds to realize stable welding. Because the wire feeder needs to replace the welding wire after the welding wire is used up once, when the welding wire is replaced, the welding wire needs to be fed to the contact tube in a inching mode, but the excessive or incomplete wire feeding often occurs, so that the waste of the welding wire is caused.
Therefore, how to control wire feeding and reduce the waste of welding wires is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a spot-moving wire feeding control method and a spot-moving wire feeding control terminal for a welding machine, wherein by controlling a main power supply of the welding machine, a power supply of the wire feeder and a wire feeding speed, the wire feeder is switched off to brake at the beginning, the wire feeder runs for a first delay time at the minimum wire feeding speed, after the main power supply of the welding machine is switched on, the wire is fed at a set speed, the current and the voltage of the welding machine are detected, and when the current of the welding machine is greater than a current reference value, or the voltage of the welding machine is less than a voltage reference value, or the spot-moving wire feeding time is up, or a spot-moving wire feeding signal is finished, the spot-moving wire feeding is finished; the main power supply of the welding machine is closed, the wire feeding motor runs at the minimum wire feeding speed, after the second delay time, the power supply of the wire feeding machine is closed, the brake of the wire feeding machine is opened, the sufficient buffer time is provided for the brake of the wire feeding machine, and the working reliability of a wire feeding circuit is ensured; the welding machine can stop sending the silk in time, has avoided the waste of welding wire.
In a first aspect, the above object of the present invention is achieved by the following technical solutions:
a spot-moving wire feeding control method for a welding machine comprises the steps that when the spot-moving wire feeding control method works in a gas shielded welding mode, after a spot-moving wire feeding signal is received, the welding machine is switched to a manual welding mode, a wire feeding motor power supply is started, and the wire feeding motor is controlled to run at the lowest speed; opening a main loop of a welding power supply, running a wire feeding motor at a set speed, establishing inching wire feeding time, and starting an inching wire feeding mode; detecting the current and the voltage of a welding power supply, and ending inching wire feeding when the current of the welding power supply is larger than a current reference value, or the voltage is smaller than a voltage reference value, or inching wire feeding time is up, or inching wire feeding signals are ended; and (4) closing the main loop power supply, controlling the wire feeding motor to run at the minimum speed, closing the wire feeding machine power supply, and ending the inching wire feeding mode.
The invention is further configured to: the method also comprises the steps of turning off the brake of the wire feeder when the power supply of the wire feeder motor is turned on and the wire feeder motor is controlled to operate at the lowest speed; when the main loop power supply is closed, the wire feeding motor is controlled to run at the minimum speed, and when the wire feeding machine power supply is closed, the wire feeding machine brake is turned on.
The invention is further configured to: and after the brake of the wire feeder is closed, establishing a first delay time, and after the first delay time is over, opening the main loop of the welding power supply.
The invention is further configured to: and closing the main loop power supply, controlling the wire feeding motor to operate at the minimum speed, creating a second delay time, closing the wire feeding machine power supply after the second delay time is finished, and opening the wire feeding machine brake.
The invention is further configured to: and when the current of the welding power supply is smaller than the current reference value, the voltage is larger than the voltage reference value, and the inching wire feeding signal is ended, controlling the welding machine to carry out an idle mode.
The invention is further configured to: and after the inching wire feeding signal is finished, continuously detecting the current and the voltage of the welding power supply, and performing corresponding action according to a detection result.
The invention is further configured to: the method comprises the following steps:
s1, enabling the welding machine to work normally;
s2, judging whether the welding mode is a gas shield welding mode, if so, entering the next step, and if not, continuing to detect and judge;
s3, judging whether a jog wire feeding signal is detected, if so, entering the next step, and if not, continuing to detect and judge;
s4, switching to a manual welding mode, setting a welding power supply to output a minimum current, turning off a brake of a wire feeder, turning on a power supply of the wire feeder, and controlling the wire feeder motor to operate at a minimum speed; creating a first delay time;
S5, judging whether the first delay time is finished, if so, entering the next step, and if not, continuing to detect and judge;
s6, controlling the output of the main loop of the welding power supply, enabling the wire feeding motor to run at a set speed, feeding wires and establishing second delay time;
s7, judging whether the wire feeding stopping condition is met, if so, entering the next step, and if not, continuing to detect and judge;
s8, judging whether the first delay time is finished, if so, entering the next step, and if not, continuing to detect and judge;
s9, turning off the power supply of the wire feeder, and turning on the brake of the wire feeder;
s10, detecting the output voltage and current of the welding power supply;
s11, judging whether the current of the welding power supply is smaller than a current reference value and whether the voltage signal is larger than a voltage reference value, if so, entering the next step, and if not, continuing to detect and judge;
and S12, judging whether the inching wire feeding signal is finished, if so, turning to S3, and if not, continuing to detect and judge.
The invention is further configured to: the wire feeding stopping condition comprises the following steps: detecting the current and voltage of the welding power supply, and when the current of the welding power supply is greater than a current reference value; or the voltage of the welding power supply is smaller than the voltage reference value; or inching the wire feeding time; or the inching wire feed signal is over.
In a second aspect, the above object of the present invention is achieved by the following technical solutions:
a welding machine spot wire feed control terminal comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to realize the method.
In a third aspect, the above object of the present invention is achieved by the following technical solutions:
a computer-readable storage medium, in which a computer program is stored, which computer program, when being executed by a processor, carries out the method of the present application.
Compared with the prior art, the beneficial technical effects of this application do:
1. the wire feeder brake is controlled to be closed when inching is started through time sequence control, and the brake is opened after the inching wire feeding is finished, so that the brake has sufficient buffering time, and the working reliability of a wire feeding circuit is ensured; the welding machine can stop feeding wires in time, so that waste of welding wires is avoided;
2. furthermore, the welding machine is controlled to stop feeding wires in time according to the detection result by detecting the current and voltage of the main power supply of the welding machine, the wire feeding time and the wire feeding signal state during wire feeding, so that the waste of welding wires is avoided;
3. Further, this application is opening the brake after, continues to detect the welding machine main power supply and jog and send a signal, prevents that the jog send a signal not to finish and continue to carry out the jog and send a silk, has avoided hiccup effect, has guaranteed the jog and has sent a reliability.
Drawings
Fig. 1 is a schematic control flow structure diagram of an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Detailed description of the preferred embodiment
The spot-moving wire feeding control method of the welding machine comprises a main power supply of the welding machine and a power supply of the wire feeder in a welding machine system, wherein the power supply of the wire feeder is fed back from the output voltage of the main power supply of the welding machine, so that the power supply of the wire feeder is only available when the main power supply outputs.
The welding machine receives the spot wire feeding signal in the normal working process, converts the welding mode into the manual welding mode, controls the welding power supply to output the minimum current so as to control the wire feeder to work at the lowest voltage, performs the early preparation work of spot wire feeding, comprises the steps of closing the wire feeder brake, outputting a PWM control signal of the wire feeder power supply, opening the wire feeder power supply, setting the minimum wire feeding speed of the wire feeder, controlling the wire feeder to run at the minimum wire feeding speed, and establishing the first delay time.
And (4) canceling a brake power supply, and closing the wire feeder to brake so as to ensure that the brake does not act.
After the first delay time is over, PWM control signal output of a welding machine power supply is controlled, main loop voltage output of the welding power supply is controlled, a wire feeding motor is controlled to run at a set speed, inching wire feeding time is established, a inching wire feeding mode is started, the wire feeding machine enters the inching wire feeding mode to perform wire feeding work, in the inching wire feeding process, output voltage and current of the welding power supply, inching wire feeding time, inching wire feeding signal states and the like are detected, and the inching wire feeding mode is ended as long as one condition is met.
And when the output current of the welding power supply is detected to be larger than the current reference value, ending the inching wire feeding mode.
And when the output voltage of the welding power supply is detected to be smaller than the voltage reference value, ending the inching wire feeding mode.
And when the inching wire feeding time is detected, ending the inching wire feeding mode.
And when the inching wire feeding signal is detected to be finished, finishing the inching wire feeding mode.
After the inching wire feeding mode is finished, firstly closing a PWM control signal of a main circuit of a welding power supply, and outputting no voltage to the main circuit of the welding power supply; the wire feed motor is controlled to run at a minimum speed, creating a second delay time.
And after the second delay time is over, closing a power supply PWM control signal of the wire feeding machine, supplying no power to the wire feeding motor, electrifying the brake of the wire feeding machine, and opening the brake of the wire feeding machine.
When the output current of the welding power supply is larger than the current reference value, or the output voltage of the welding power supply is smaller than the voltage reference value, or the inching wire feeding time is up, the inching wire feeding signal is not necessarily finished, and the inching wire feeding signal can be in an effective state.
The above process is circulated to avoid the hiccup effect of the welder.
And when the output current of the welding power supply is smaller than the current reference value, the output voltage is larger than the voltage reference value, and the inching wire feeding signal is ended, controlling the welding machine to carry out an idle mode, and waiting for the next instruction of the welding machine.
Specifically, as shown in fig. 1, the jog wire feeding control process includes the following steps:
s1, enabling the welding machine to work normally;
s2, judging whether the welding mode is a gas shielded welding mode, if so, entering the next step, and if not, continuing to detect and judge;
s3, judging whether a jog wire feeding signal is detected, if so, entering the next step, and if not, continuing to detect and judge;
S4, switching to a manual welding mode, setting a welding power supply to output a minimum current, turning off a brake of a wire feeder, turning on a power supply of the wire feeder, and controlling the wire feeder motor to operate at a minimum speed; creating a first delay time;
s5, judging whether the first delay time is finished or not, if so, entering the next step, and if not, continuing to detect and judge;
s6, controlling the output of the main loop of the welding power supply, enabling the wire feeding motor to run at a set speed, feeding wires and establishing second delay time;
s7, judging whether the wire feeding stopping condition is met, if yes, entering the next step, and if not, continuing to detect and judge;
s8, judging whether the first delay time is finished or not, if so, entering the next step, and if not, continuing to detect and judge;
s9, turning off the power supply of the wire feeder, and turning on the brake of the wire feeder;
s10, detecting the output voltage and current of the welding power supply;
s11, judging whether the current of the welding power supply is smaller than a current reference value and whether the voltage signal is larger than a voltage reference value, if so, entering the next step, and if not, continuing to detect and judge;
and S12, judging whether the inching wire feeding signal is finished, if so, turning to S3, and if not, continuing to detect and judge.
And during each detection judgment, if the corresponding condition is not met, the next operation is not carried out, the judgment is continued until the condition is met, and then the next operation process is carried out.
In the above steps, when the corresponding step is executed, the manual operation is carried out on the operation panel, or the corresponding time sequence is set through a program, and the operation of the corresponding step is automatically carried out.
The first delay time and the second delay time are set at any time in the corresponding program process or automatically set through the program.
The wire feeding stopping condition comprises the following steps: when the current of the welding power supply is larger than the current reference value; or the voltage of the welding power supply is smaller than the voltage reference value; or inching the wire feeding time; or the inching wire feeding signal is finished, and when any condition is met, the inching wire feeding mode is finished.
Detailed description of the invention
The invention provides a terminal device for controlling spot wire feeding of a welding machine, which comprises: a processor, a memory, and a computer program stored in the memory and executable on the processor, such as a jog feed control program, the processor implementing the jog control method of embodiment 1 when executing the computer program.
Alternatively, the processor, when executing the computer program, implements the functions of the modules/units in the above device embodiments, for example: a calculating characteristic module and a judging module.
Illustratively, the computer program may be partitioned into one or more modules/units that are stored in the memory and executed by the processor to implement the invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions that describe the execution of the computer program in the welder's spot wire feed control terminal device. For example, the computer program may be divided into a plurality of modules, each module having the following specific functions:
1. the welding machine control module is used for outputting control instructions of the welding machine and the wire feeder;
2. and the detection module is used for detecting the output of the welding power supply and the state of the wire feeder.
The welding machine inching wire feeding control terminal equipment can be computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud server. The welder spot-wire feed control terminal equipment may include, but is not limited to, a processor, a memory. Those skilled in the art will appreciate that the above examples are merely illustrative of the welder snubbing wire feed control terminal, and do not constitute a limitation on the welder snubbing wire feed control terminal, and may include more or fewer components than shown, or some components in combination, or different components, e.g., the welder snubbing wire feed control terminal may also include input output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general processor may be a microprocessor or the processor may be any conventional processor, etc., and the processor is a control center of the one kind of the terminal device for controlling the wire feeding for the welding machine, and various interfaces and lines are used to connect various parts of the whole terminal device for controlling the wire feeding for the welding machine.
The memory may be configured to store the computer programs and/or modules, and the processor may be configured to implement various functions of the terminal device for welding machine touch-wire feed control by executing or otherwise executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Detailed description of the invention
The integrated module/unit of the spot wire feed control terminal device of the welding machine can be stored in a computer readable storage medium if the module/unit is realized in the form of a software functional unit and is sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. A spot wire feeding control method for a welding machine is characterized by comprising the following steps: when the gas shielded welding machine works in a gas shielded welding mode, after a jog wire feeding signal is received, switching the welding machine to a manual welding mode, starting a power supply of a wire feeding motor, and controlling the wire feeding motor to run at the lowest speed; opening a main loop of a welding power supply, operating a wire feeding motor at a set speed, establishing inching wire feeding time, and starting an inching wire feeding mode; detecting the current and voltage of a welding power supply, and finishing inching wire feeding when the current of the welding power supply is larger than a current reference value, or the voltage is smaller than a voltage reference value, or inching wire feeding time is up, or inching wire feeding signals are finished; and (4) closing the main loop power supply, controlling the wire feeding motor to run at the minimum speed, closing the wire feeding machine power supply, and ending the inching wire feeding mode.
2. The spot wire feed control method for the welding machine as claimed in claim 1, wherein: the method also comprises the steps of turning off the brake of the wire feeder when the power supply of the wire feeder motor is turned on and the wire feeder motor is controlled to operate at the lowest speed; when the main loop power supply is closed, the wire feeding motor is controlled to run at the minimum speed, and when the wire feeding machine power supply is closed, the wire feeding machine brake is turned on.
3. The spot wire feed control method for a welding machine according to claim 2, wherein: after the brake of the wire feeder is closed, a first delay time is established, and after the first delay time is finished, the main loop of the welding power supply is opened.
4. The spot wire feed control method for a welding machine according to claim 2, wherein: and closing the main loop power supply, controlling the wire feeding motor to run at the minimum speed, establishing a second delay time, closing the wire feeding machine power supply after the second delay time is ended, and opening the wire feeding machine brake.
5. The spot wire feed control method for the welding machine as claimed in claim 1, wherein: and when the welding power supply current is smaller than a current reference value, the voltage is larger than a voltage reference value, and the inching wire feeding signal is ended, controlling the welding machine to carry out an idle mode.
6. The spot wire feed control method for the welding machine as defined in claim 5, wherein: and after the inching wire feeding signal is finished, continuously detecting the current and the voltage of the welding power supply, and performing corresponding action according to a detection result.
7. The spot wire feed control method for the welding machine as claimed in claim 1, wherein: the method comprises the following steps:
S1, enabling the welding machine to work normally;
s2, judging whether the welding mode is a gas shield welding mode, if so, entering the next step, and if not, continuing to detect and judge;
s3, judging whether a jog wire feeding signal is detected, if so, entering the next step, and if not, continuing to detect and judge;
s4, switching to a manual welding mode, setting a welding power supply to output a minimum current, turning off a brake of a wire feeder, turning on a power supply of the wire feeder, and controlling the wire feeder motor to operate at a minimum speed; creating a first delay time;
s5, judging whether the first delay time is finished, if so, entering the next step, and if not, continuing to detect and judge;
s6, controlling the output of the main loop of the welding power supply, enabling the wire feeding motor to run at a set speed, feeding wires and establishing second delay time;
s7, judging whether the wire feeding stopping condition is met, if so, entering the next step, and if not, continuing to detect and judge;
s8, judging whether the first delay time is finished, if so, entering the next step, and if not, continuing to detect and judge;
s9, turning off the power supply of the wire feeder, and turning on the brake of the wire feeder;
s10, detecting the output voltage and current of the welding power supply;
s11, judging whether the current of the welding power supply is smaller than a current reference value and whether the voltage signal is larger than a voltage reference value, if so, entering the next step, and if not, continuing to detect and judge;
And S12, judging whether the inching wire feeding signal is finished, if so, turning to S3, and if not, continuing to detect and judge.
8. The spot wire feed control method for a welding machine as defined in claim 7, wherein: the wire feeding stopping condition comprises the following steps: detecting the current and voltage of the welding power supply, and when the current of the welding power supply is greater than a current reference value; or the voltage of the welding power supply is smaller than the voltage reference value; or inching the wire feeding time; or the inching wire feed signal is over.
9. A welder spot wire feed control terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: the processor, when executing the computer program, implements the method of any of claims 1-8.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 8.
CN202210332686.9A 2022-03-31 2022-03-31 Spot-moving wire feeding control method and terminal for welding machine Pending CN114749768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210332686.9A CN114749768A (en) 2022-03-31 2022-03-31 Spot-moving wire feeding control method and terminal for welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210332686.9A CN114749768A (en) 2022-03-31 2022-03-31 Spot-moving wire feeding control method and terminal for welding machine

Publications (1)

Publication Number Publication Date
CN114749768A true CN114749768A (en) 2022-07-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210332686.9A Pending CN114749768A (en) 2022-03-31 2022-03-31 Spot-moving wire feeding control method and terminal for welding machine

Country Status (1)

Country Link
CN (1) CN114749768A (en)

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