CN208825799U - A kind of inverter argon arc welding machine control circuit module of Digital Control - Google Patents
A kind of inverter argon arc welding machine control circuit module of Digital Control Download PDFInfo
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- CN208825799U CN208825799U CN201821460031.5U CN201821460031U CN208825799U CN 208825799 U CN208825799 U CN 208825799U CN 201821460031 U CN201821460031 U CN 201821460031U CN 208825799 U CN208825799 U CN 208825799U
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Abstract
The utility model discloses a kind of inverter argon arc welding machine control circuit modules of Digital Control, belong to inverter argon arc welding machine technical field, including microprocessor, the key circuit being connect with microprocessor, display circuit, pwm signal output circuit, the primary current of welding machine inverter output is detected, and by the current detection circuit of current sampling signal input microprocessor, according to the welding gun control circuit of the condition input signals of arc welding gun switch to microprocessor, the microprocessor handles the input signal of current detection circuit and welding gun control circuit, obtain gas circuit control signal, high-frequency arc strike controls signal and high-frequency pulse signal, the pwm signal output circuit exports after being converted the high-frequency pulse signal that microprocessor exports, solving existing inverter argon arc welding machine, there are system, control circuit plate complexity, precision Low, at high cost, poor reliability and the weak problem of anti-interference ability.
Description
Technical field
The utility model belongs to inverter argon arc welding machine technical field, is related to a kind of inverter argon arc welding machine control of Digital Control
Circuit module processed.
Background technique
The system, control circuit of traditional inverter argon arc welding machine mostly uses greatly dedicated PWM pulse width modulating chip as inverse switch
Polar circuit before the pulsed drive of pipe, additional a large amount of analog circuit, logic circuit and various discrete devices constitute complicated PID control
System and sequence circuit, the performance characteristics of all products are fully relied in the parameter of each component, component parameter it is inconsistent straight
Connecing causes welder performance inconsistent, and in practice, the component of all producer's productions is impossible to guarantee that its parameter is completely the same,
So the every performance of welding machine for same brand often occur is all inconsistent, difference is larger, control precision also not high phenomenon.
Currently in order to realizing the various functions of welding machine, it will increase a large amount of component, just will increase many circuit boards, this
Sample can not only increase substantially the production cost of welding machine, but also the Performance And Reliability of welding machine can with the increase of component and
Decline.
Therefore, that there are system, control circuit plates is complicated, precision is low, at high cost, poor reliability for existing inverter argon arc welding machine
The weak problem with anti-interference ability, therefore, the utility model proposes a kind of inverter argon arc welding machine of Digital Control control electricity
Road module.
Summary of the invention
The purpose of this utility model is that: a kind of inverter argon arc welding machine control circuit module of Digital Control is provided,
Solves existing inverter argon arc welding machine there are system, control circuit plates that complicated, precision is low, at high cost, poor reliability and anti-interference energy
The weak problem of power.
The technical solution adopted in the utility model is as follows:
A kind of inverter argon arc welding machine control circuit module of Digital Control, including microprocessor, connect with microprocessor
Key circuit, display circuit, current detection circuit, welding gun control circuit and pwm signal output circuit, current detecting electricity
The primary current that road exports welding machine inverter detects, and by current sampling signal input microprocessor, the welding gun control
Circuit processed is according to the condition input signals of arc welding gun switch to microprocessor, and the microprocessor is to current detection circuit and welding gun control
The input signal of circuit processed is handled, and gas circuit control signal, high-frequency arc strike control signal and high-frequency pulse signal are obtained, described
Pwm signal output circuit exports after being converted the high-frequency pulse signal that microprocessor exports.
Further, further include the gas circuit control circuit and high-frequency arc strike control circuit being connect with microprocessor, control respectively
The electromagnetic gas valve and hf arc starter of welding machine processed, the gas circuit control signal that the gas circuit control circuit is exported according to microprocessor drive
Dynamic external electromagnetic air valve work, the high-frequency arc strike control signal that the high-frequency arc strike control circuit is exported according to microprocessor drive
The work of external high frequency Igniting unit.
It further, further include the fault detection circuit being connect with microprocessor, the fault detection circuit other end connects
Connect external normally closed thermal protector, the microprocessor is believed according to the state output WENDU signal of thermal protector according to WENDU
Number control equipment fortune stop and alarm.
Further, the key circuit includes encoder K1, key SW1, SW2, the upper end described key SW1, SW2 difference
Pull-up resistor R26, R27 are accessed, accesses pull-up resistor R23, R24 and R25 on the encoder K1, and access microprocessor U7.
Further, the display circuit includes that status display circuit, current channel display circuit and parameter channel are shown
Circuit is controlled by drive control chip U1, and the drive control chip U1 accesses microprocessor U7, the status display circuit
Including the charactron DIG1 being connect with drive control chip U1, the current channel display circuit and parameter channel display circuit packet
Include the indicator light LED1-LED11 connecting with drive control chip U1.
Further, the current detection circuit includes the rectifier bridge rectified to inverter primary current detection signal
B1, it is rectified after current sampling signal CURR+, be followed by all the way by zener diode V1 and one-way SCR Q1 into micro process
Device U7, another way access microprocessor U7 by resistance R9, diode D2 and resistance R10.
Further, the welding gun control circuit includes transformer TF1, socket J2, optocoupler U6 and U12, B+15V power supply warp
The anode of resistance R20 to optocoupler U6, the cathode of U6 are connected to socket J2, and the output end of U6 accesses microprocessor U7, C+15V power supply warp
The anode of resistance R47 to optocoupler U12, the cathode of U12 are grounded after being connected to triode Q7, and the output end of U12 also accesses microprocessor
U7。
Further, the pwm signal output circuit includes integrated circuit U10, U11 and U2, and the microprocessor U7 is defeated
High-frequency pulse signal PWM1 and PWM2 out obtains pulse signal PWM-A and PWM- after U10 and U11 carries out voltage conversion respectively
B。
Further, the microprocessor uses the single-chip microcontroller MM32F031 of 32 ARM frameworks.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1. the inverter argon arc welding machine control circuit module of a kind of Digital Control, using microcontroller as the control circuit of core
Module has managed the preset display of electric current, failure and status display, the welding gun starting, 2T/4T control, manual welding/argon arc welding of welding machine
Control, electromagnetic gas valve control and hf arc starter control, realize highly integrated control circuit, reduce single chip architecture and
The a large amount of logic circuits in periphery, reduce the volume of circuit module, there is no the cumbersome wiring in periphery, improve welding machine performance and
Reliability also reduces cost.
2. the microcontroller in the utility model is sampled by primary current carries out electric current loop PID calculating, result is direct
Output pwm signal adjusts welding machine external characteristics, and product is reliable and stable, and precision is obviously improved and versatility is higher.
3. the utility model carries out manual welding/argon arc welding selection mode, the selection of 2T/4T function, electric current by display circuit
Preset display, fault self-diagnosis is shown, welding current is adjusted, slow liter/ramp down time would is adjusted, preceding gas/rear gas time adjustment is aobvious
Show, and selected by key, simplify operation, make user very clear, there is good consistency, to improve stability.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings, in which:
Fig. 1 is a kind of system construction drawing of the inverter argon arc welding machine control circuit module of Digital Control；
Fig. 2 is the key circuit figure of the utility model；
Fig. 3 is the display circuit figure of the utility model；
Fig. 4 is the current detection circuit figure of the utility model；
Fig. 5 is the welding gun electric operation control circuit figure of the utility model；
Fig. 6 is the pwm signal output circuit figure of the utility model；
Fig. 7 is the gas circuit control circuit and high-frequency arc strike electric operation control circuit figure of the utility model；
Fig. 8 is the way circuit figure of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model,
Instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with each
Different configurations is planted to arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
A kind of inverter argon arc welding machine control circuit module of Digital Control solves existing inverter argon arc welding machine and there is system
The problem that control circuit board of uniting is complicated, precision is low, at high cost, poor reliability and anti-interference ability are weak；
Including microprocessor, the key circuit being connect with microprocessor, display circuit, current detection circuit, welding gun control
Circuit and pwm signal output circuit, the primary current that the current detection circuit exports welding machine inverter detect, and will
Current sampling signal input microprocessor, the welding gun control circuit is according to the condition input signals of arc welding gun switch to micro process
Device, the microprocessor handle the input signal of current detection circuit and welding gun control circuit, obtain gas circuit control letter
Number, high-frequency arc strike control signal and high-frequency pulse signal, the high-frequency impulse that the pwm signal output circuit exports microprocessor
Signal exports after being converted；
The utility model has managed the preset display of electric current, the event of welding machine using microcontroller as the control circuit module of core
Barrier and status display, welding gun starting, 2T/4T control, the control of manual welding/argon arc welding control, electromagnetic gas valve and hf arc starter
Control, realizes highly integrated control circuit, reduces a large amount of logic circuits of single chip architecture and periphery, reduces circuit module
Volume, there is no the cumbersome wiring in periphery, improve the Performance And Reliability of welding machine, also reduce cost.
It is described in further detail below with reference to feature and performance of the embodiment to the utility model.
Embodiment one
A kind of inverter argon arc welding machine control circuit module for Digital Control that the utility model preferred embodiment provides, such as
Shown in Fig. 1, including microprocessor, the key circuit being connect with microprocessor, display circuit, current detection circuit, welding gun control
Circuit and pwm signal output circuit, the primary current that the current detection circuit exports welding machine inverter detect, and will
Current sampling signal input microprocessor, the welding gun control circuit is according to the condition input signals of arc welding gun switch to micro process
Device, the pwm signal output circuit export after being converted the high-frequency pulse signal that microprocessor exports.
Further, the microprocessor uses the single-chip microcontroller MM32F031 of 32 ARM frameworks, is sampled by primary current
Electric current loop PID calculating is carried out, the direct output pwm signal of result adjusts welding machine external characteristics, and product is reliable and stable, and precision is significant
It is promoted and versatility is higher.
Further, the key circuit is as shown in Fig. 2, include encoder K1, key SW1, SW2, the key SW1,
The upper end SW2 is respectively connected to pull-up resistor R26, R27, accesses pull-up resistor R23, R24 and R25 on the encoder K1, and access
Single-chip microcontroller U7, as rotary encoder K1 and depresses button SW1, SW2, corresponding single-chip microcontroller input port is just by high level " 1 "
Become low level " 0 ", then the adjusting of each functional parameter is completed in the instruction by single-chip microcontroller inside.
Further, the display circuit is as shown in figure 3, include status display circuit, current channel display circuit and ginseng
Number channel display circuit, is controlled by drive control chip U1, and the drive control chip U1 accesses single-chip microcontroller U7, the state
Display circuit includes the charactron DIG1 connecting with drive control chip U1, and the current channel display circuit and parameter channel are aobvious
Show that circuit includes the indicator light LED1-LED11 connecting with drive control chip U1, manual welding/argon arc is carried out by display circuit
Weld that model selection, the selection of 2T/4T function, the preset display of electric current, fault self-diagnosis show, welding current is adjusted, slow is risen/delay when dropping
Between adjust, the display of preceding gas/rear gas time adjustment, and selected by key, simplify operation, make user very clear, with good
Good consistency, to improve stability.
Further, the drive control chip U1 uses TM1620.
Further, the current detection circuit is as shown in figure 4, include whole to the detection signal progress of inverter primary current
The rectifier bridge B1 of stream, it is rectified after current sampling signal CURR+, all the way by after zener diode V1 and one-way SCR Q1
Single-chip microcontroller U7 is accessed, another way accesses the current component input terminal of single-chip microcontroller U7 by resistance R9, diode D2 and resistance R10
ADC-CURR。
Further, the welding gun control circuit is as shown in figure 5, include transformer TF1, socket J2, optocoupler U6 and U12, B
For+15V power supply through resistance R20 to the anode of optocoupler U6, the cathode of U6 is connected to 3 feet of socket J2, when 3, the 4 feet short circuit of J2 (is pressed
Dynamic arc welding gun switch) when, optocoupler U6 work, 4 foot of output end of U6 is low level at this time, this signal accesses the input terminal of single-chip microcontroller U7
GUN-SW, C+15V power supply is grounded after being connected to triode Q7 through resistance R47 to the anode of optocoupler U12, the cathode of U12, and U12's is defeated
Outlet also accesses the input terminal VRD of single-chip microcontroller U7.
Further, the pwm signal output circuit is as shown in fig. 6, include integrated circuit U10, U11 and U2, the list
The high-frequency pulse signal PWM1 and PWM2 of piece machine U7 output obtain pulse signal after U10 and U11 carries out voltage conversion respectively
Then PWM-A and PWM-B directly exports, enters drive amplification circuit module.
The utility model is internal to carry out current closed-loop PID using microcontroller as core, then output pwm signal, to drive
Movement controller carries out the adjusting of welding machine external characteristics, realizes that manual welding/argon arc welding function selection, 2T/4T control selections, electric current are preset aobvious
Show with the functions such as VRD, accurately adjust preceding gas, rear gas, it is slow rise, the parameters such as slow drop, solve existing inverter argon arc welding machine and there is system
The problem that control circuit board of uniting is complicated, precision is low, at high cost, poor reliability and anti-interference ability are weak.
Embodiment two
The utility model preferred embodiment further includes connecting with microprocessor further on the basis of example 1
Gas circuit control circuit and high-frequency arc strike control circuit, as shown in fig. 7, respectively control welding machine electromagnetic gas valve and high-frequency arc strike
Device, the gas circuit control signal driving external electromagnetic air valve that the gas circuit control circuit is exported according to microprocessor work, the height
The high-frequency arc strike control signal driving external high frequency Igniting unit work that frequency striking arc control circuit is exported according to microprocessor.
When argon arc welding state presses arc welding gun switch, high level, triode Q3 are exported immediately for single-chip microcontroller PA15 mouthfuls at this time
Then conducting drives the work of external electromagnetic air valve, when unclamping arc welding gun switch, exports low electricity immediately for single-chip microcontroller PA15 mouthfuls at this time
Flat, triode Q3 is by electromagnetic gas valve stops working.When argon arc welding state presses arc welding gun switch, single-chip microcontroller PB4 mouthfuls at this time
High level is exported immediately, then triode Q2 conducting drives the work of external high frequency Igniting unit, when unclamping arc welding gun switch, at this time
PB4 mouthfuls of single-chip microcontroller export low level immediately, and triode Q2 is by Igniting unit stops working.
Embodiment three
The utility model preferred embodiment further includes connecting with microprocessor further on the basis of example 2
Fault detection circuit, the external normally closed thermal protector of fault detection circuit other end connection.
The microprocessor, that is, single-chip microcontroller U7 is according to the state output WENDU signal of thermal protector, and according to WENDU signal
The fortune of control equipment stops and alarms, and the normally closed thermal protector is 75 degree of normally closed thermal protectors, under normal circumstances ,+15V power supply
Thermal protector ground connection is connect through resistance R11, the WENDU signal that R12 connects with single-chip microcontroller U7 at this time is low level, the normal work of equipment
Make；After apparatus overheat, thermal protector is disconnected, and the WENDU signal that R12 connects with single-chip microcontroller U7 at this time is high level, single-chip microcontroller
U7 control equipment stops working, and drives the charactron DIG1 in display circuit to show E01 alarm, simultaneously closes off pwm signal.
The above is only the preferred embodiment of the utility model only, the protection model being not intended to limit the utility model
It encloses, anyone skilled in the art any modification made within spirit of the present utility model and principle is equally replaced
It changes and improves, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of inverter argon arc welding machine control circuit module of Digital Control, it is characterised in that: including microprocessor, with micro- place
Manage key circuit, display circuit, current detection circuit, welding gun control circuit and the pwm signal output circuit of device connection, the electricity
The primary current that current detection circuit exports welding machine inverter detects, and by current sampling signal input microprocessor, institute
Welding gun control circuit is stated according to the condition input signals of arc welding gun switch to microprocessor, the microprocessor is to current detection circuit
It is handled with the input signal of welding gun control circuit, obtains gas circuit control signal, high-frequency arc strike control signal and high-frequency impulse
Signal, the pwm signal output circuit export after being converted the high-frequency pulse signal that microprocessor exports.
2. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
Further include the gas circuit control circuit and high-frequency arc strike control circuit being connect with microprocessor, respectively control welding machine electromagnetic gas valve and
Hf arc starter, the gas circuit control signal driving external electromagnetic air valve work that the gas circuit control circuit is exported according to microprocessor
Make, the high-frequency arc strike control signal driving external high frequency Igniting unit work that the high-frequency arc strike control circuit is exported according to microprocessor
Make.
3. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
It further include the fault detection circuit being connect with microprocessor, the external normally closed Thermal protection of fault detection circuit other end connection
Device, the microprocessor stop according to the state output WENDU signal of thermal protector, and according to the fortune that WENDU signal controls equipment
And alarm.
4. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
The key circuit includes encoder K1, key SW1, SW2, the upper end described key SW1, SW2 be respectively connected to pull-up resistor R26,
Pull-up resistor R23, R24 and R25 are accessed on R27, the encoder K1, and access microprocessor U7.
5. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
The display circuit includes status display circuit, current channel display circuit and parameter channel display circuit, by drive control
Chip U1 control, the drive control chip U1 access microprocessor U7, and the status display circuit includes and drive control core
The charactron DIG1 of piece U1 connection, the current channel display circuit and parameter channel display circuit include and drive control chip
The indicator light LED1-LED11 of U1 connection.
6. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
The current detection circuit includes the rectifier bridge B1 rectified to inverter primary current detection signal, it is rectified after electric current
Sampled signal CURR+ is followed by by zener diode V1 and one-way SCR Q1 into microprocessor U7 all the way, and another way passes through electricity
It hinders R9, diode D2 and resistance R10 and accesses microprocessor U7.
7. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
The welding gun control circuit includes transformer TF1, socket J2, optocoupler U6 and U12, and B+15V power supply is through resistance R20 to optocoupler U6's
Anode, the cathode of U6 are connected to socket J2, and the output end of U6 accesses microprocessor U7, and C+15V power supply is through resistance R47 to optocoupler U12
Anode, the cathode of U12 is grounded after being connected to triode Q7, and the output end of U12 also accesses microprocessor U7.
8. a kind of inverter argon arc welding machine control circuit module of Digital Control according to claim 1, it is characterised in that:
The pwm signal output circuit includes integrated circuit U10, U11 and U2, the high-frequency pulse signal of the microprocessor U7 output
PWM1 and PWM2 obtains pulse signal PWM-A and PWM-B after U10 and U11 carries out voltage conversion respectively.
9. a kind of inverter argon arc welding machine control circuit module of Digital Control according to any one of claims 1 to 8,
It is characterized by: the microprocessor uses the single-chip microcontroller MM32F031 of 32 ARM frameworks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460031.5U CN208825799U (en) | 2018-09-07 | 2018-09-07 | A kind of inverter argon arc welding machine control circuit module of Digital Control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460031.5U CN208825799U (en) | 2018-09-07 | 2018-09-07 | A kind of inverter argon arc welding machine control circuit module of Digital Control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524094A (en) * | 2019-09-10 | 2019-12-03 | 上海威特力焊接设备制造股份有限公司 | Welding gun |
| WO2020237989A1 (en) * | 2019-05-29 | 2020-12-03 | 华南理工大学 | Fast-frequency pulse tig welding system |
-
2018
- 2018-09-07 CN CN201821460031.5U patent/CN208825799U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020237989A1 (en) * | 2019-05-29 | 2020-12-03 | 华南理工大学 | Fast-frequency pulse tig welding system |
| CN110524094A (en) * | 2019-09-10 | 2019-12-03 | 上海威特力焊接设备制造股份有限公司 | Welding gun |
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Effective date of registration: 20220513 Address after: 610000 No. 861, Gangtong North 4th Road, north area of modern industrial port, Pidu District, Chengdu, Sichuan Patentee after: Chengdu Weike Electronic Technology Co.,Ltd. Address before: 610000 No. 29, Section 1, East 2nd Ring Road, Chenghua District, Chengdu, Sichuan Patentee before: CHENGDU ZHONGYU ELECTRONIC TECHNOLOGY Co.,Ltd. |