CN106112210B - Three function digit electric welding machines - Google Patents
Three function digit electric welding machines Download PDFInfo
- Publication number
- CN106112210B CN106112210B CN201610710051.2A CN201610710051A CN106112210B CN 106112210 B CN106112210 B CN 106112210B CN 201610710051 A CN201610710051 A CN 201610710051A CN 106112210 B CN106112210 B CN 106112210B
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- China
- Prior art keywords
- circuit
- electric welding
- welding machine
- speed
- inverter
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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
-
- 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
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
- B23K9/1062—Power supply characterised by the electric circuit by using digital means with computing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
Abstract
The present invention provides a kind of three function digit electric welding machines, belong to welding machine technical field.It solves the problems, such as that existing electric welding machine circuit is complicated and stability is poor.This three function digit electric welding machine, including human-computer exchange platform, the current rectifying and wave filtering circuit being connect with extraneous power supply and the rectifying output circuit being connect with electric welding machine arc welding gun head, it is connected with inverter control circuit and inverter circuit between current rectifying and wave filtering circuit and rectifying output circuit in turn, the inverter control circuit driving inverter circuit work, the electric welding machine further includes hard wired feed back circuit and MCU control unit, and the respective both ends of the hard wired feed back circuit and MCU control unit are connect with above-mentioned inverter control circuit and rectifying output circuit respectively.This three function digit electric welding machine has the advantages that circuit is simple, consistency is good and stability is good.
Description
Technical field
The invention belongs to welding machine technical fields, are related to a kind of three function digit electric welding machines.
Background technique
What existing inverter type welder was all realized using simulation control chip and logic circuit substantially, it is every to increase a kind of function
Many elements will be increased, to have two kinds of above functions and just be additionally required circuit board and many circuits, so not only substantially
Degree improves welding machine cost, and Performance And Reliability can sharply decline, the performance of inverter type welder with the increase of number of elements
Feature fully relies on the parameter of each component, and the inconsistent welder performance that directly results in of component parameter is inconsistent, and component
It is influenced very greatly by environment such as temperature, humidity, consistency is very poor.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, propose that a kind of circuit is simple, consistency is good
And three stable function digit electric welding machines.
Object of the invention can be realized by the following technical scheme: three function digit electric welding machines, including human-computer exchange
Platform, the current rectifying and wave filtering circuit being connect with extraneous power supply and the rectifying output circuit being connect with electric welding machine arc welding gun head, the rectification
It is connected with inverter control circuit and inverter circuit between filter circuit and rectifying output circuit in turn, the inverter control circuit drives
Dynamic inverter circuit work, it is characterised in that: the electric welding machine further includes hard wired feed back circuit and MCU control unit, the hardware
The respective both ends of feed circuit and MCU control unit are connect with above-mentioned inverter control circuit and rectifying output circuit respectively.
In three above-mentioned function digit electric welding machines, the hard wired feed back circuit includes voltage feedback circuit and electric current
Feed circuit.
In three above-mentioned function digit electric welding machines, the MCU control unit includes high-speed comparator unit, high speed
Analog-digital converter, high-speed A/D converter and sample circuit, the high-speed AD converter are connect with above-mentioned sample circuit, institute
The high-speed A/D converter stated is connect with above-mentioned inverter control circuit.
In three above-mentioned function digit electric welding machines, the sample circuit includes temperature sampling circuit, voltage sample
Circuit and current sampling circuit.
In three above-mentioned function digit electric welding machines, air valve control circuit is also connected in the MCU control unit
And wire-feeding control circuit, above-mentioned high-speed A/D converter are connect with air valve control circuit and wire-feeding control circuit.
In three above-mentioned function digit electric welding machines, the inverter control circuit includes PWM pulse-width modulation circuit.
Compared with prior art, this three function digit electric welding machine has the advantages that following several:
1, it is controlled using software and hardware double closed-loop control system, so that control is accurate, consistency is good and stablizes；
2, multi-functional operation, common circuit between each function are realized by MCU control unit Digital Control, and are passed through
Software function realizes switching control, simplifies circuit structure simultaneously, also reduces cost, while software modularity designs, and does not do mutually
In advance, stability is good；
3, system protects circuit using high-speed comparator, and the response speed of high speed improves the reliability of system,
And the input of track to track expands the input range of system.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1, this three function digit electric welding machine includes human-computer exchange platform, the rectification filter connecting with extraneous power supply
Wave circuit and the rectifying output circuit connecting with electric welding machine arc welding gun head, successively connect between current rectifying and wave filtering circuit and rectifying output circuit
It is connected to inverter control circuit and inverter circuit, inverter control circuit includes PWM pulse-width modulation circuit, PWM pulse-width modulation circuit control
System driving inverter circuit work.The respective work of current rectifying and wave filtering circuit, PWM pulse-width modulation circuit, inverter circuit and rectifying output circuit
The working principle making principle and combining between each other is the art conventional technical means, no longer narration in detail.
It further include air valve control circuit, wire-feeding control circuit, hard wired feed back circuit and MCU control unit, hard wired feed back electricity
Road and the respective both ends of MCU control unit are connect with inverter control circuit and rectifying output circuit respectively.MCU control unit with
PWM pulse-width modulation circuit connects and control PWM pulse-width modulation circuit work, control working principle are the art routine skill
Art no longer elaborates.Hard wired feed back circuit includes voltage feedback circuit and current feedback circuit, arranges the electricity on output circuit
Pressure and electric current are wherein directly fed back to all the way on the voltage feedback circuit and current feedback circuit of hard wired feed back circuit, hard wired feed back
Control circuit in circuit is analyzed according to the voltage and current signal of feedback generates a feedback signal one to inverter control circuit, this is anti-
Feedback signal one is the signal of this feedback closed loop of hardware feedback.
MCU control unit includes high-speed comparator unit, high-speed AD converter, high-speed A/D converter and sampling electricity
Road, sample circuit include temperature sampling circuit, voltage sampling circuit and current sampling circuit, voltage sampling circuit and current sample
The input terminal of circuit is connected with power factor (PF) adjustment circuit.High-speed AD converter is connect with sample circuit, sample circuit with it is whole
Stream output circuit connection is used to acquire the output voltage, output electric current and temperature information of rectifying output circuit, high-speed digital-analog conversion
Device is connect with air valve control circuit, wire-feeding control circuit and PWM pulse-width modulation circuit.
Present invention utilizes the novel analog peripheral functionality of the MCU of micro- core, the high-speed AD converter of use, 12 complete
Fully differential converter, conversion rate can reach 75ksps, the high-speed AD converter that system uses also with current rectifying and wave filtering circuit
Output end connection come the output electric current that uses input voltage and up-sampled by sampled voltage from rectifying output circuit, according to
The working condition of the data point reuse welding machine of sampling, reaches optimal welding effect；The high-speed A/D converter of use can provide
One variable Voltage Reference has 256 optional output voltages, and system uses fixed reference potential and digital analog converter,
Given for circuit provides given voltage, makes up the inconsistency of analog element, improves system accuracy；The high-speed comparator of use
Unit, response speed 50ns, track to track input, the lag time that can be exported by software control, inside can connect height
Fast analog-digital converter and fixed reference potential, system protect circuit using high-speed comparator unit, the corresponding speed of height
Degree improves the reliability of system, and the input of track to track expands the input range of system.Fixed reference potential, independently of electricity
The stable reference voltage in source, it is 1.024V, 2.048V and 4.096V that output voltage, which may be selected, and reference voltage is high-speed digital-analog conversion
Device and high-speed AD converter provide reference voltage.
Using software and hardware double closed-loop control system: the output of rectifying output circuit feeds back while to hard wired feed back circuit sum number
Word MCU control unit, total system feedback are by hard wired feed back circuit and digitlization MCU control unit while to act on.Number
The feedback signal of word MCU control unit has given high-speed comparator unit and high-speed AD converter, high-speed comparator list simultaneously
First to be directly compared with setting value, control dynamic response is fast, we are used for protective effect on software；High-speed AD converter by
It is formed on the limitation using frequency of sample circuit, the relatively high speed comparator unit of speed will lag, the adjustment for inverter circuit.
System only can just go wrong in the case where hard wired feed back circuit and digitlization MCU control unit fail simultaneously, so significantly
Improve the stability of system.
There are three types of functions for this system tool, are gas shield welding, argon arc welding and manual welding respectively, the switching and control of each function are
It is communicated by human-computer exchange platform with MCU control unit and is realized by MCU control unit by software design adjustment, three kinds of function
Energy common circuit, it is all to be realized by software without increasing excessive additional circuit, circuit design and manufacture are greatly simplified,
Structure is simple, at low cost.
Its working principle difference is as follows:
When work is in gas shield welding program, the hardware closed-loop on the one hand passing through hard wired feed back circuit realizes that gas shield welding maximum is short
The protection of road current limit and gas shield welding output voltage are tentatively adjusted, and on the other hand pass through the software of digitlization MCU control unit
Closed loop realizes that gas shield welding output electric current, output voltage sampled operational carry out precision-matched with built-in welding expert database and pass through
Wire-feeding control circuit, which controls wire feed rate and controls gas shield welding air valve throughput by air valve control circuit, reaches best welding
With effect and going bead to reduce splashing stablizes workpiece quality, while temperature, electric current, voltage etc. become in real-time monitoring welding process
Change and realizes duplicate protection and save data.
When work is in argon arc welding program, the hardware closed-loop on the one hand passing through hard wired feed back circuit realizes that argon arc welding maximum is short
On the other hand current limit protection in road realizes argon arc welding background current, peak value by the software closed loop of digitlization MCU control unit
Electric current, output voltage sampled operational match with built-in welding expert database lookup and control argon arc welding air valve gas flow fore blow
The after-blow time reaches best welding forming and protecting effect stablizes workpiece quality, while temperature in real-time monitoring welding process,
The variations such as electric current, voltage realize duplicate protection and save data.
When work is in manual welding program, the hardware closed-loop on the one hand passing through hard wired feed back circuit realizes that manual welding maximum is short
On the other hand current limit protection in road realizes manual welding welding current, welding by the software closed loop of digitlization MCU control unit
Arc voltage sampled operational makes up jumper line equal loss in welding process automatically makes welding workpiece stay in grade, while real-time monitoring
The variations such as temperature, electric current, voltage realize duplicate protection and save data in welding process
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. three function digit electric welding machines, including human-computer exchange platform, the current rectifying and wave filtering circuit being connect with extraneous power supply and with electricity
The rectifying output circuit of welding machine arc welding gun head connection, is connected with inversion in turn between the current rectifying and wave filtering circuit and rectifying output circuit
Control circuit and inverter circuit, inverter control circuit driving inverter circuit work, it is characterised in that: the electric welding machine further includes
The respective both ends of hard wired feed back circuit and MCU control unit, the hard wired feed back circuit and MCU control unit respectively with it is above-mentioned
Inverter control circuit connected with rectifying output circuit.
2. three function digits electric welding machine according to claim 1, which is characterized in that the hard wired feed back circuit includes
Voltage feedback circuit and current feedback circuit.
3. three function digits electric welding machine according to claim 1, which is characterized in that the MCU control unit includes
High-speed comparator unit, high-speed AD converter, high-speed A/D converter and sample circuit, the high-speed AD converter with it is upper
The sample circuit connection stated, the high-speed A/D converter are connect with above-mentioned inverter control circuit.
4. three function digits electric welding machine according to claim 3, which is characterized in that the sample circuit includes temperature
Sample circuit, voltage sampling circuit and current sampling circuit.
5. three function digits electric welding machine according to claim 3, which is characterized in that in the MCU control unit also
It is connected with air valve control circuit and wire-feeding control circuit, above-mentioned high-speed A/D converter and air valve control circuit and wire feed control electricity
Road connection.
6. three function digits electric welding machine according to claim 1, which is characterized in that the inverter control circuit includes
PWM pulse-width modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610710051.2A CN106112210B (en) | 2016-08-22 | 2016-08-22 | Three function digit electric welding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610710051.2A CN106112210B (en) | 2016-08-22 | 2016-08-22 | Three function digit electric welding machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106112210A CN106112210A (en) | 2016-11-16 |
| CN106112210B true CN106112210B (en) | 2019-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610710051.2A Active CN106112210B (en) | 2016-08-22 | 2016-08-22 | Three function digit electric welding machines |
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| Country | Link |
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| CN (1) | CN106112210B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434431A (en) * | 2019-07-26 | 2019-11-12 | 广州大学 | A kind of high-strength steel welding method that quality is precisely controlled |
| 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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| CN101391336A (en) * | 2008-10-24 | 2009-03-25 | 广东火电工程总公司 | Embedded digitization controlled tube-plate all-position automatic welding inverter |
| CN101396754A (en) * | 2008-10-17 | 2009-04-01 | 上海沪工电焊机制造有限公司 | Control circuit of arc-welding power supply |
| CN102059432A (en) * | 2010-12-31 | 2011-05-18 | 广东易事特电源股份有限公司 | Digitalized welding machine with parameter self-learning function |
| CN202053010U (en) * | 2009-10-30 | 2011-11-30 | 长沙长远焊接设备有限公司 | IGBT digital and multifunctional gas shielded arc-welding soft switch inversion power supply |
| CN102350569A (en) * | 2011-09-29 | 2012-02-15 | 熊猫电子集团有限公司 | Multifunctional digitized welding machine |
| CN102922091A (en) * | 2012-11-26 | 2013-02-13 | 甘肃西柴动力机电制造有限公司 | Digitally-controlled multifunctional inverted arc welding machine |
| CN103817402A (en) * | 2012-11-18 | 2014-05-28 | 盐城鼎力达焊接科技有限公司 | Multifunctional high-frequency inversion direct-current electric welding machine realizing circuit |
| CN205927440U (en) * | 2016-08-22 | 2017-02-08 | 浙江颐顿机电有限公司 | Three function digit electric welding |
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2016
- 2016-08-22 CN CN201610710051.2A patent/CN106112210B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101396754A (en) * | 2008-10-17 | 2009-04-01 | 上海沪工电焊机制造有限公司 | Control circuit of arc-welding power supply |
| CN101391336A (en) * | 2008-10-24 | 2009-03-25 | 广东火电工程总公司 | Embedded digitization controlled tube-plate all-position automatic welding inverter |
| CN202053010U (en) * | 2009-10-30 | 2011-11-30 | 长沙长远焊接设备有限公司 | IGBT digital and multifunctional gas shielded arc-welding soft switch inversion power supply |
| CN102059432A (en) * | 2010-12-31 | 2011-05-18 | 广东易事特电源股份有限公司 | Digitalized welding machine with parameter self-learning function |
| CN102350569A (en) * | 2011-09-29 | 2012-02-15 | 熊猫电子集团有限公司 | Multifunctional digitized welding machine |
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| Publication number | Publication date |
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| CN106112210A (en) | 2016-11-16 |
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Denomination of invention: Three function digital electric welding machine Effective date of registration: 20220303 Granted publication date: 20190212 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wenling branch Pledgor: ZHEJIANG EDON MECHANICAL & ELECTRICAL Co.,Ltd. Registration number: Y2022330000282 |