CN108971705A - Automatic wire feeder - Google Patents
Automatic wire feeder Download PDFInfo
- Publication number
- CN108971705A CN108971705A CN201710268741.1A CN201710268741A CN108971705A CN 108971705 A CN108971705 A CN 108971705A CN 201710268741 A CN201710268741 A CN 201710268741A CN 108971705 A CN108971705 A CN 108971705A
- Authority
- CN
- China
- Prior art keywords
- module
- control
- motor
- wire feeder
- revolving speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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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
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- 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
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/124—Circuits or methods for feeding welding wire
- B23K9/125—Feeding of electrodes
Abstract
The present invention relates to wire feed control technology fields in welding, provide a kind of automatic wire feeder, including control module, human-computer interaction module, communication module, motor adjustment module, revolving speed sampling module and execution module.Wherein, control module exports control signal to motor adjustment module respectively with human-computer interaction module and communication module bidirectional data interaction, and receives signal and data that revolving speed sampling module is sent.Motor adjustment module receives the control signal and data that control module is sent, and is converted into the control signal of control execution module.Revolving speed sampling module samples the velocity of rotation of execution module, and is converted to data that control module can identify and signal is output to control module.Execution module executes the movement of transmission welding wire under the control for the control signal that motor adjustment module exports.The present invention uses speed feedback regulative mode, and the revolving speed of wire feeding motor is directly sampled by revolving speed sampling module, with speed considerations revolving speed, realizes the wire feed of more stable higher precision.
Description
Technical field
The present invention relates to wire feed control technology fields in welding, more particularly to the improvement to a kind of automatic wire feeder.
Background technique
The stability of the welding quality and technique of wire-feed motor and Arc Welding Power has a direct and important relationship, wire feed it is steady
The cooperation of qualitative and precision and wire-feed motor and Arc Welding Power is all the important prerequisite for realizing high welding quality.Such as with constant pressure
In characteristic power supply or the constant wire-feed mode of slow drop characteristic power supply box cooperation, the size of welding current is mainly determined by wire feed rate
It is fixed, and arc voltage is determined by supply voltage.Therefore, the stability and precision of wire feed directly affect the stabilization of welding current and melt
Transient process is dripped, and then influences appearance of weld and welding quality.
Complete set send machine system to be made of two parts: control section and mechanical part.The mechanical part master of wire-feed motor
It to include wire feed driving motor and transmission device.Currently, DC servo motor or rotation is widely used in the driving motor of wire-feed motor
The printed motor that torque is big, armature inertia is small, and its transmission device mostly uses two-wheeled or four-wheel hold-down mechanism.To direct current generator
Speech, the main method controlled its speed is exactly to change armature voltage.Therefore, it is the stabilization for realizing wire feed rate, just must
It must make armature voltage adjust automatically and variation with the change of load torque or wire feed rate.
In order to ensure motor speed is stablized, current wire-feed motor mainly uses the form of monocycle negative voltage feedback, although it
Rotation speed change caused by the internal resistance of source and net voltage fluctuation can be compensated, revolving speed caused by loading moment variation cannot be but compensated and become
Change.Some wire-feed motors are in such a way that negative voltage feedback cooperates positive current feedback, although this mode is equivalent to speed feedback,
The slight change of speed caused by its variation to temperature etc. does not have compensating action.
Summary of the invention
Technical purpose of the invention is to solve the defect of the above-mentioned prior art, provides a kind of automatic wire feeder, using turning
The revolving speed of the fast direct sample motor of feedback regulation mode directly uses speed considerations revolving speed, to reach more stable higher precision
The control of wire feed rate.
Technical purpose of the invention adopts the following technical solutions realization.
The present invention provides a kind of automatic wire feeder, which includes control module, human-computer interaction module, communication module,
Motor adjustment module, revolving speed sampling module and execution module.Wherein:
Control module carries out bidirectional data interaction with human-computer interaction module and communication module respectively, and control module is also to electricity
Machine adjustment module output control signal, and receive signal and data that revolving speed sampling module is sent；
Motor adjustment module, the control signal and data sent for receiving control module, and be converted into control and execute
The control signal of module is exported to execution module；
Revolving speed sampling module for sampling the velocity of rotation of execution module, and is converted to the number that control module can identify
Control module is output to according to signal；And
Execution module, for executing the movement of transmission welding wire under the control for the control signal that motor adjustment module exports.
Automatic wire feeder provided by the present invention, it is direct by revolving speed sampling module by the way of speed feedback adjusting
Execution module, the i.e. revolving speed of wire feeding motor are sampled, speed considerations revolving speed is directly used, to reach the wire feed of more stable higher precision
The control of speed.
Detailed description of the invention
Fig. 1 gives the general illustration of automatic wire feeder of the invention；
Fig. 2 gives the implementation signal for constituting revolving speed sampling module in automatic wire feeder of the invention using photoelectric encoder
Figure；
Fig. 3 gives the preferred implementation schematic diagram of motor adjustment module in automatic wire feeder of the invention；
Fig. 4 gives the preferred implementation schematic diagram of human-computer interaction module in automatic wire feeder of the invention；
Fig. 5-1 gives when the wire feeding motor that photoelectric encoder exports in automatic wire feeder of the invention rotates counterclockwise
Two-tube waveform diagram；And
Fig. 5-2 gives when the wire feeding motor that photoelectric encoder exports in automatic wire feeder of the invention rotates clockwise
Two-tube waveform diagram.
Specific embodiment
Further details of the technical solution of the present invention with reference to the accompanying drawings and detailed description.
Shown in Figure 1 the present invention provides a kind of automatic wire feeder, which includes control module 100, man-machine friendship
Mutual module 101, communication module 102, motor adjustment module 103, revolving speed sampling module 104 and execution module 105.Wherein:
Control module 100 carries out bidirectional data interaction with human-computer interaction module 101 and communication module 102 respectively, controls mould
Block 100 also exports control signal to motor adjustment module 103, and receives signal and data that revolving speed sampling module 104 is sent；
Motor adjustment module 103, the control signal and data sent for receiving control module 100, and be converted into controlling
The control signal of execution module 105 processed is exported to execution module 105；
Revolving speed sampling module 104, for sampling the velocity of rotation of execution module 105, and being converted to control module 100 can
The data and signal of identification are output to control module 100；And
Execution module 105, for executing transmission welding wire under the control for the control signal that motor adjustment module 103 exports
Movement.
Above-mentioned automatic wire feeder directly samples execution by revolving speed sampling module 104 by the way of speed feedback adjusting
Module 105, the i.e. revolving speed of wire feeding motor directly use speed considerations revolving speed, to reach the wire feed rate of more stable higher precision
Control.
It is highly preferred that above-mentioned revolving speed sampling module 104 is taken as photoelectric encoder 1041, it is shown in Figure 2.The photoelectric coding
Device 1041 follows the rotation of execution module 105, and the velocity of rotation of execution module 105, which is converted to control module 100, to be identified
Square-wave signal be output to control module 100.Execution module 105 is usually taken to be wire feed driving motor, and wire feed driving motor is optional
For the printed motor that DC servo motor or rotating torque are big, armature inertia is small.
Photoelectric encoder is that one kind by photoelectric conversion converts the mechanical geometric displacement on the output shaft to pulse, number
Word amount or the sensor of analog signals output.The survey of the analog physicals amount such as angle, straight-line displacement, revolving speed may be implemented using it
Amount.Photoelectric encoder have the function of small in size, light-weight, wide in variety, complete, high frequency is corresponding, resolution capability is high, bearing capacity is strong,
The features such as torque is small, energy consumption is low, and performance is stable, reliable, long service life.
Wire feeding motor driving method of the present invention based on speed feedback is substantially exactly a closed-loop control system
System.When wire feeding motor is rotated with certain speed, the motor of photoelectric encoder 1041 is also and then rotated, and photoelectric encoder 1041 exists
The square-wave signal of the continuous outputting standard of meeting in rotation process, by taking Fig. 5-1 and Fig. 5-2 as an example.Photoelectric encoder 1041 is in motor electricity
60 square-wave signals can be exported during moving one week by pivoting, and Fig. 5-1 gives two-tube wave when wire feeding motor rotates counterclockwise
Shape schematic diagram, Fig. 5-2 give two-tube waveform diagram when wire feeding motor rotates clockwise, and control module 100 passes through detection
The control to motor speed and direction may be implemented in the signal.Control module 100 can be in the time interior focusing photoelectric coder of timing
The porch number of 1041 acquisitions is counted, and then can calculate wire feed rate according to known parameters.Control module 100 is counted
After calculating wire feed rate, according to the relationship of wire feed rate and Current Voltage, wire feed rate is converted into corresponding electric current and voltage
Value, and it is compared with given electric current and voltage value, in conjunction with Digital PID Algorithm to given value, that is, PWM (pulse
Width modulated) duty ratio of wave is adjusted, to the modulation pulse of 103 output pulse width of motor adjustment module as control letter
Number, to realize the accurate adjustment to wire feeding motor voltage, that is, the accurate adjusting to wire feed rate.
Technical purpose to realize the present invention, above-mentioned control module 100 are preferably LPC1768 microcontroller.The microcontroller
Device embeds Cortex-M3 kernel, although this is the ARM chip of a primary, its application is very extensive, and technology is very mature, function
Also more perfect.It can be applied in highly integrated and low-power consumption embedded application occasion, and operating frequency can reach 100MHz.
ARM Cortex-M3CPU has 3 level production lines and Ha Fu structure, with independent local instruction and data bus and is used for peripheral hardware
Article 3 bus, embed vector interrupt controller (NVIC), relative to other common single-chip microcontrollers, its overclocking is higher, processing
Speed is faster, with better function, and the scalability and retractility of system are stronger, can realize technical purpose of the invention well.
Further, the motor drive mode that the present invention uses is PWM wave driving.PWM, that is, pulse width modulation, can root
Carry out the biasing of modulation transistor base stage or metal-oxide-semiconductor grid according to the variation of respective loads, when conducting to realize transistor or metal-oxide-semiconductor
Between change, thus realize switching power supply output change.Motor adjustment module 103 in the present invention preferably includes to be isolated
Circuit 1031, power amplification circuit 1032, PWM controller 1033 and driving circuit 1034, it is shown in Figure 3.Control module 100
The pwm pulses of output successively via isolation circuit 1031, power amplification circuit 1032, PWM controller 1033 and are driven
After dynamic circuit 1034, it is converted into control execution module 105, i.e. the control signal of wire feed driving motor exports to wire feed and drives electricity
Machine.
Preferably, above-mentioned isolation circuit 1031 is taken as the optical coupling isolation circuit 1031 of model TLP521, power amplification electricity
The model on road 1032 is taken as LF353, and the model of PWM controller 1033 is taken as TL3843, and driving circuit 1034 is by two models
The half-bridge drive circuit 1034 of the NMOS tube composition of IRF530 is constituted.To which the present invention can be included using LPC1768 microcontroller
PWM motor driven interface export one group of controllable PWM wave, the signal pass through TLP521 light-coupled isolation, the power amplification of LF353
And the control of TL3843PWM controller 1033, output to the half-bridge drive circuit 1034 being made of two IRF530 finally will
Signal is exported to the both ends of wire feed driving motor.The make-and-break time of two IRF530 is controlled by changing the duty ratio of PWM wave,
To change the voltage at wire feed driving motor both ends, achieve the purpose that control wire feed rate.
Human-computer interaction module 101 of the invention may include the control input module 1012 for handoff functionality and adjustment parameter
It is shown in Figure 4 with the display output module 1011 for being used to refer to function and display parameters.Wherein, input module 1012 is controlled
It may include digitlization key group and rotary encoder, display output module 1011 may include charactron and LED light.It is set using this
The human-computer interaction module 101 of meter can carry out such as primary current value, receive arc current value, inductance value, primary voltage value, receive arc
The one or more parameter such as voltage value and wire feed rate sets and displays.For example, can show numeral method using electric current
Primary current value receives arc current value, the parameter values such as inductance value and wire feed rate；It can choose rotation when design voltage adjusting knob
Encoder, pressing this rotary encoder can switch between primary voltage and receipts two parameters of arc voltage, corresponding indicator light point
Bright, voltage shows the corresponding parameter of numeral method, rotates clockwise this encoder and increases this parameter value, otherwise reduces parameter
Value.
Communication module 102 in the present invention preferably include one of RS485 communication module and CAN_BUS communication module or
It is a variety of, it can be used for being communicated with Arc Welding Power or other host computers and later period machine networking, the present invention can also be provided
Automatic wire feeder carry out comprehensive monitoring and control, realize the digitlization and diversification of wire-feed motor interface.
RS485 is a kind of half-duplex operation mode of technical grade, and data-signal uses differential transfer mode, also referred to as balances
Transmission, it is using a pair of of twisted pair, wherein a line is defined as A, another line is defined as B.Under normal conditions, driver A, B are sent
Between positive level in+2~+6V, be a logic state, negative level is another logic state in -2V~6V.In RS-
There are also " enabled " end in 485, " enabled " end is for controlling the cutting and connection that send driver and transmission line.When " enabled "
When end is worked, sends driver and be in high-impedance state, referred to as " third state ", i.e., it is the third for being different from logical one Yu " 0 "
State.RS485 is hardly damaged interface circuit chips, compatible with Transistor-Transistor Logic level, maximum transmission rate 10Mbps, it has antinoise
The advantages that interference performance is strong, and transmission range is long and can be connected with multistation.In the present invention, common serial ports can be used and turn 485
Communication mode realizes 485 communications, and the driving chip of use is chosen as SN75176, and driving circuit 1034 is typical RS485 biography
Transmission of electricity road.
CANBUS, that is, controller LAN is one of most widely used fieldbus in the world.It is a kind of how main side
The serial communication bus of formula, have the advantages that strong antijamming capability traffic rate fastly and communication distance grow, automobile, manufacturing industry with
And aircraft industry is widely applied.
Claims (11)
1. a kind of automatic wire feeder, which is characterized in that the wire-feed motor includes control module, human-computer interaction module, communication module, electricity
Machine adjustment module, revolving speed sampling module and execution module, in which:
The control module carries out bidirectional data interaction, the control with the human-computer interaction module and the communication module respectively
Molding block also exports control signal to the motor adjustment module, and receives the signal sum number that the revolving speed sampling module is sent
According to；
The motor adjustment module, the control signal and data sent for receiving the control module, and be converted into controlling
The control signal of the execution module is exported to the execution module；
Revolving speed sampling module for sampling the velocity of rotation of the execution module, and is converted to the control module and can identify
Data and signal be output to the control module；And
Execution module, for executing the movement of transmission welding wire under the control for the control signal that the motor adjustment module exports.
2. automatic wire feeder described in accordance with the claim 1, it is characterised in that:
The human-computer interaction module include for handoff functionality and the control input module of adjustment parameter and be used to refer to function and
The display output module of display parameters.
3. automatic wire feeder according to claim 2, it is characterised in that:
The control input module includes digitlization key group and rotary encoder, the display output module include charactron with
LED light.
4. automatic wire feeder according to claim 2, it is characterised in that:
The parameter includes primary current value, receives arc current value, inductance value, primary voltage value, receives arc voltage value and wire feed rate
One or more of.
5. automatic wire feeder described in accordance with the claim 1, it is characterised in that:
The communication module includes one of RS485 communication module and CAN_BUS communication module or a variety of.
6. automatic wire feeder described in accordance with the claim 1, it is characterised in that:
The execution module is wire feed driving motor, and the wire feed driving motor is that DC servo motor or rotating torque are big, electric
The small printed motor of pivot inertia.
7. according to any automatic wire feeder of claim 1~6, it is characterised in that:
The control module is LPC1768 microcontroller.
8. according to any automatic wire feeder of claim 1~6, it is characterised in that:
The revolving speed sampling module is photoelectric encoder,
The photoelectric encoder follows the rotation of the execution module, and the velocity of rotation of the execution module is converted to the control
The square-wave signal that molding block can identify is output to the control module.
9. automatic wire feeder according to claim 8, it is characterised in that:
The control signal that the control module is exported to the motor adjustment module is pwm pulses.
10. automatic wire feeder according to claim 9, it is characterised in that:
The motor adjustment module includes isolation circuit, power amplification circuit, PWM controller and driving circuit,
The pwm pulses of the control module output are successively via the isolation circuit, power amplification electricity
After road, the PWM controller and the driving circuit, the control signal for being converted into controlling the execution module, which is exported to described, to be held
Row module.
11. automatic wire feeder according to claim 10, it is characterised in that:
The isolation circuit is optical coupling isolation circuit, model TLP521；The model LF353 of the power amplification circuit, institute
State the model TL3843 of PWM controller；The driving circuit is driven by the half-bridge that the NMOS tube of two model IRF530 forms
Dynamic circuit is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710268741.1A CN108971705A (en) | 2017-06-01 | 2017-06-01 | Automatic wire feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710268741.1A CN108971705A (en) | 2017-06-01 | 2017-06-01 | Automatic wire feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108971705A true CN108971705A (en) | 2018-12-11 |
Family
ID=64500892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710268741.1A Withdrawn CN108971705A (en) | 2017-06-01 | 2017-06-01 | Automatic wire feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108971705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328427A (en) * | 2019-07-17 | 2019-10-15 | 郭建业 | A kind of wire feeding motor power supply mode |
| CN110842323A (en) * | 2019-11-13 | 2020-02-28 | 南京工业大学 | Automatic lead-lined wire feeding system based on embedded microprocessor |
| CN113145990A (en) * | 2020-12-24 | 2021-07-23 | 上海宗镕电器有限公司 | Digital electric welding machine system integrated with multifunctional welding mode |
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|---|---|---|---|---|
| CN201020717Y (en) * | 2007-04-13 | 2008-02-13 | 华中科技大学 | Module type embedded type multiple-foot robot movement controller |
| CN202649091U (en) * | 2012-04-16 | 2013-01-02 | 北京华巍中兴电气有限公司 | Wire feed resistance measuring device |
| CN104400186A (en) * | 2014-11-27 | 2015-03-11 | 郭智峰 | Cascaded electric welding machine power supply topological structure |
| CN205111026U (en) * | 2015-10-27 | 2016-03-30 | 上海沪工焊接集团股份有限公司 | Send silk quick -witted drive and control circuit |
| CN105537727A (en) * | 2016-01-15 | 2016-05-04 | 深圳麦格米特电气股份有限公司 | Welder circuit capable of achieving real-time monitoring on welding parameters and welder states at wire feeder end |
| CN206154719U (en) * | 2016-08-31 | 2017-05-10 | 徐工集团工程机械有限公司 | A wire drive feed unit and 3D printer for 3D printer |
| CN106712606A (en) * | 2016-11-29 | 2017-05-24 | 株洲麦格米特电气有限责任公司 | Control method for wire feeder speed regulation system |
-
2017
- 2017-06-01 CN CN201710268741.1A patent/CN108971705A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020717Y (en) * | 2007-04-13 | 2008-02-13 | 华中科技大学 | Module type embedded type multiple-foot robot movement controller |
| CN202649091U (en) * | 2012-04-16 | 2013-01-02 | 北京华巍中兴电气有限公司 | Wire feed resistance measuring device |
| CN104400186A (en) * | 2014-11-27 | 2015-03-11 | 郭智峰 | Cascaded electric welding machine power supply topological structure |
| CN205111026U (en) * | 2015-10-27 | 2016-03-30 | 上海沪工焊接集团股份有限公司 | Send silk quick -witted drive and control circuit |
| CN105537727A (en) * | 2016-01-15 | 2016-05-04 | 深圳麦格米特电气股份有限公司 | Welder circuit capable of achieving real-time monitoring on welding parameters and welder states at wire feeder end |
| CN206154719U (en) * | 2016-08-31 | 2017-05-10 | 徐工集团工程机械有限公司 | A wire drive feed unit and 3D printer for 3D printer |
| CN106712606A (en) * | 2016-11-29 | 2017-05-24 | 株洲麦格米特电气有限责任公司 | Control method for wire feeder speed regulation system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328427A (en) * | 2019-07-17 | 2019-10-15 | 郭建业 | A kind of wire feeding motor power supply mode |
| CN110842323A (en) * | 2019-11-13 | 2020-02-28 | 南京工业大学 | Automatic lead-lined wire feeding system based on embedded microprocessor |
| CN113145990A (en) * | 2020-12-24 | 2021-07-23 | 上海宗镕电器有限公司 | Digital electric welding machine system integrated with multifunctional welding mode |
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