CN204321376U - A kind of direct current gas-shielded welder impulse controller - Google Patents
A kind of direct current gas-shielded welder impulse controller Download PDFInfo
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- CN204321376U CN204321376U CN201420613199.0U CN201420613199U CN204321376U CN 204321376 U CN204321376 U CN 204321376U CN 201420613199 U CN201420613199 U CN 201420613199U CN 204321376 U CN204321376 U CN 204321376U
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Abstract
The utility model discloses a kind of direct current gas-shielded welder impulse controller, belong to the welding equipment technology of gas shielded arc welding.This controller is made up of pulse generating circuit, on-off circuit, Current Voltage control point adjustment, pulse frequency regulator potentiometer, peak pulse duration regulator potentiometer, mode selection circuit and control unit interface.Pulse generating circuit take SG3526 as the control circuit of core, and connect with frequency and peak pulse duration regulator potentiometer, its output controls on-off circuit; The control module that on-off circuit is is core with a switch triode and relay, controls the switching between base value and peak parameters; Current Voltage control point adjustment is made up of four potentiometers; Mode selection circuit is made up of a single-pole double-throw switch (SPDT).The utility model has the advantage of that structure is simple, cost of manufacture is low, easy to use, easy care and stable and reliable for performance.
Description
Technical field
The utility model relates to a kind of direct current gas-shielded welder impulse controller, belongs to gas shielded arc welding welding equipment technology.
Background technology
Gas shielded arc welding is with its many merits, be widely used in seeing in industrial production, but conventional DC gas-shielded welder is when welding heat needs the weld seam of strict restriction, easily there are quality problems in welding process, such as backing weld seam welding: need the heat strictly controlling electric arc in backing weld seam welding process, in conventional DC welder process, because the controllability of parameter is poor, welding heat is wayward, easily occurs burn-through or the problem such as lack of penetration, and low frequency pulse current voltage is in conjunction with the welding method of pulsed wire feeding, parameter has certain adjustable range, reasonably can control the heat of weld seam, produce qualified weld seam attractive in appearance, but the recoverable amount of conventional DC gas-shielded welder in market is very large at present, if change pulse welding power supply, conventional DC welding machine will face idle or be eliminated, and then cause use cost to raise, thus be necessary to do further research for conventional DC gas-shielded welder, when not changing the main body circuit of conventional DC gas-shielded welder, possess conventional DC welding function, design and develop impulse controller, realize the pressure welding of low cost pulsed current electricity to connect.
Summary of the invention
The purpose of this utility model is to provide a kind of direct current gas-shielded welder Pulse Width Control apparatus, this controller is on the basis not changing original constant-voltage characteristic welding machine main body circuit, realize the welding that pulse current voltage and pulsed wire feeding combine, reasonably can control thermal weld stress, ensure appearance of weld, improve welding efficiency, enhance the function of conventional DC gas-shielded welder.
The utility model is realized by following technical proposals.
A kind of direct current gas-shielded welder impulse controller is by pulse generating circuit, on-off circuit, Current Voltage control point adjustment, pulse frequency regulator potentiometer, peak pulse duration regulator potentiometer, mode selection circuit and control unit interface are formed, it is characterized in that, pulse frequency regulator potentiometer is connected with pulse generating circuit respectively with peak pulse duration regulator potentiometer, pulse generating circuit is connected with on-off circuit, on-off circuit is connected with Current Voltage control point adjustment, mode selection circuit, on-off circuit is all connected with control unit interface with Current Voltage control point adjustment, the interface of controller is connected with the given potentiometer terminal board of direct current gas-shielded welder.
The control circuit that wherein pulse generating circuit is is core with SG3526 chip, the pin 9 of SG3526 chip connects pulse frequency regulator potentiometer, the pin 1 of SG3526 chip is connected peak pulse duration regulator potentiometer with 18, frequency and the peak pulse duration of control impuls circuit for generating is come by two potentiometers, the output pin 14 of SG3526 chip is connected with on-off circuit with 16, controls the through and off of on-off circuit.
The circuit module that on-off circuit is is core with a switch triode and relay, switch triode is for the treatment of the output square wave of pulse generating circuit, come energising and the power-off of control relay coil, the i.e. normally opened contact of control relay and the switching of normally-closed contact, often open for two groups of relay, normally-closed contact respectively and electric current, voltage setter is connected, wherein given value of current device is independent of voltage setter, the normally opened contact of relay and the switching of normally-closed contact are the switching between peak parameters and base value parameter, realize the function of pulse current voltage, the common port of its repeat circuit is connected with control unit interface.
Current Voltage control point adjustment is made up of four potentiometers, for the given adjustment of background current, peak point current, base value voltage and crest voltage parameter, wherein background current potentiometer and the series connection of peak point current potentiometer, without occuring simultaneously on parameter regulates, base value voltage potentiometer and the series connection of crest voltage potentiometer, without occuring simultaneously on parameter regulates.
Mode selection circuit is a single-pole double-throw switch (SPDT), is connected with control unit interface with Current Voltage control point adjustment, controls the model selection of welding: conventional DC pattern and pulse mode, and wherein conventional DC pattern is the reset condition of welding machine.
Direct current gas-shielded welder possesses constant voltage external characteristics.
The peak parameters of welding current, voltage and base value parameter switching are synchronous, and electric current, magnitude of voltage mate with standard parameter respectively between the peak period and during base value.
Wherein the frequency of pulse generating circuit and peak pulse duration are the electric current of actual welding process, the frequency of voltage and peak pulse duration, wherein the frequency adjustment scope of application of pulse frequency regulator potentiometer is 0.5HZ ~ 10HZ, and the peak pulse duration of peak pulse duration regulator potentiometer regulates the scope of application to be 0 ~ 95%.
The utility model is not changing on the basis with constant-voltage characteristic gas-shielded welder, controls electric arc and wire-feed motor by direct current gas-shielded welder impulse controller, achieves the coupling welding of pulse current voltage and pulsed wire feeding.The utility model structure is simple, cost of manufacture is low, easy to use and stable and reliable for performance, enhance common welding machine function.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
In Fig. 2: (a) implements CO for adopting the utility model
2short circuiting transfer current waveform during gas shielded arc welding, (b) implements CO for adopting the utility model
2short circuiting transfer voltage waveform during gas shielded arc welding.
In Fig. 3: (a) implements 80%Ar+20%CO for adopting the utility model
2the current waveform of spray transfer during mixed gas arc welding, (b) implements 80%Ar+20%CO for adopting the utility model
2the voltage waveform of spray transfer during mixed gas arc welding.
The explanation of symbol: 1-peak pulse duration regulator potentiometer; 2-pulse generating circuit; 3-pulse frequency regulator potentiometer; 4-on-off circuit; 5-Current Voltage control point adjustment; 6-control unit interface; 7-mode selection circuit; The given potentiometer terminal board of 8-electric welding machine.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Based on the wire-feed motor with constant-voltage characteristic Arc Welding Power and outfit thereof of a certain brand, use the utility model controller to test, parameters carries out short circuiting arc welding, setting parameter: CO
2gas flow is 20L/min, speed of welding is 350mm/min, peak pulse duration regulator potentiometer 1 carries out adjustment and makes dutycycle be 50%, pulse frequency regulator potentiometer 3 carries out adjustment and makes frequency be 1.5HZ, Current Voltage control point adjustment 5 carries out adjustment and makes pulse current be 220A (peak point current potentiometer), background current is 120A (background current potentiometer), pulse voltage is 24V (crest voltage potentiometer), base value voltage is 20V (base value voltage potentiometer), mode selection circuit 7 carries out selection and makes controller be in pulse mode, weld under this parameter, wherein pulse generating circuit 2 produces dutycycle under the parameter of setting is 50%, frequency is the rectangle square wave of 1.5HZ, after this rectangle square wave input on-off circuit 4, energising and the power-off of relay coil is control after switch triode process, namely control the switching of normally opened contact and normally-closed contact, often open for two groups of relay, normally-closed contact respectively and electric current, voltage setter is connected, wherein given value of current device is independent of voltage setter, the normally opened contact of relay and the switching of normally-closed contact are the switching between peak parameters and base value parameter, be connected by the given potentiometer terminal board of control unit interface 6 and electric welding machine, realize pulse current voltage function and pulsed wire feeding, the common port of its repeat circuit is connected with control unit interface, the switching of background current and peak point current can realize pulsed wire feeding function, the switching of base value voltage and crest voltage realizes the function of pulse current.Accompanying drawing 2 is the waveform of the Current Voltage in welding process.
On the basis of this control device, welding parameter is set and carries out spray transfer welding, setting parameter: mist 80%Ar+20%CO
2gas flow be 25L/min, speed of welding 550mm/min, pulse current is 400A, background current is 200A, and pulse voltage is 35V, and base value voltage is 20V, pulse ratio is 30%, and pulse frequency is 3HZ, and accompanying drawing 3 is the waveform of the Current Voltage in welding process.
Accompanying drawing 2 and 3 is the current-voltage waveform figure gathered in actual welding process, there is certain distortion in current-voltage waveform, can find out that this controller can realize the stable pulse welding in setup parameter situation by case study on implementation, strengthen normal pulsed welding function, this apparatus structure is simple, cost is low, can be widely used in engineering.
Claims (7)
1. a direct current gas-shielded welder impulse controller, this controller is by pulse generating circuit, on-off circuit, Current Voltage control point adjustment, pulse frequency regulator potentiometer, peak pulse duration regulator potentiometer, mode selection circuit and control unit interface are formed, it is characterized in that, pulse frequency regulator potentiometer is connected with pulse generating circuit respectively with peak pulse duration regulator potentiometer, pulse generating circuit is connected with on-off circuit, on-off circuit is connected with Current Voltage control point adjustment, mode selection circuit is connected with control unit interface with on-off circuit, the interface of controller is connected with the given potentiometer terminal board of direct current gas-shielded welder.
2. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, the control circuit that described pulse generating circuit is is core with SG3526 chip, the pin 9 of SG3526 chip connects pulse frequency regulator potentiometer, the pin 1 of SG3526 chip is connected peak pulse duration regulator potentiometer with 18, frequency and the peak pulse duration of control impuls circuit for generating is come by two potentiometers, the output pin 14 of SG3526 chip is connected with on-off circuit with 16, controls the through and off of on-off circuit.
3. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, the circuit module that described on-off circuit is is core with a switch triode and relay, switch triode is for the treatment of the output square wave of pulse generating circuit, come energising and the power-off of control relay coil, the i.e. normally opened contact of control relay and the switching of normally-closed contact, often open for two groups of relay, normally-closed contact respectively and electric current, voltage setter is connected, wherein given value of current device is independent of voltage setter, the normally opened contact of relay and the switching of normally-closed contact are the switching between peak parameters and base value parameter, realize the function of pulse current voltage, the common port of its repeat circuit is connected with control unit interface.
4. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, described Current Voltage control point adjustment is made up of four potentiometers, for the given adjustment of background current, peak point current, base value voltage and crest voltage parameter.
5. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, described mode selection circuit is a single-pole double-throw switch (SPDT), be connected with control unit interface with Current Voltage control point adjustment, control the model selection of welding: conventional DC pattern and pulse mode, wherein conventional DC pattern is the reset condition of welding machine.
6. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, described direct current gas-shielded welder possesses constant voltage external characteristics.
7. a kind of direct current gas-shielded welder impulse controller as claimed in claim 1, it is characterized in that, the frequency adjustment scope of application of described pulse frequency regulator potentiometer is 0.5HZ ~ 10HZ, and the peak pulse duration of described peak pulse duration regulator potentiometer regulates the scope of application to be 0 ~ 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613199.0U CN204321376U (en) | 2014-10-22 | 2014-10-22 | A kind of direct current gas-shielded welder impulse controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420613199.0U CN204321376U (en) | 2014-10-22 | 2014-10-22 | A kind of direct current gas-shielded welder impulse controller |
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| Publication Number | Publication Date |
|---|---|
| CN204321376U true CN204321376U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420613199.0U Expired - Fee Related CN204321376U (en) | 2014-10-22 | 2014-10-22 | A kind of direct current gas-shielded welder impulse controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368895A (en) * | 2014-10-22 | 2015-02-25 | 江苏科技大学 | Pulse controller for direct current gas shielded welding machine |
| CN108907416A (en) * | 2018-07-17 | 2018-11-30 | 上海广为焊接设备有限公司 | The cooperating system of gas shielded welding machine |
| CN112894079A (en) * | 2021-01-18 | 2021-06-04 | 南通博锐泰焊接科技有限公司 | Digital pulse type direct current manual arc welding method and electric arc welding machine applying same |
-
2014
- 2014-10-22 CN CN201420613199.0U patent/CN204321376U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368895A (en) * | 2014-10-22 | 2015-02-25 | 江苏科技大学 | Pulse controller for direct current gas shielded welding machine |
| CN108907416A (en) * | 2018-07-17 | 2018-11-30 | 上海广为焊接设备有限公司 | The cooperating system of gas shielded welding machine |
| CN108907416B (en) * | 2018-07-17 | 2020-09-04 | 上海广为焊接设备有限公司 | Cooperative operation system of gas shielded welding machine |
| CN112894079A (en) * | 2021-01-18 | 2021-06-04 | 南通博锐泰焊接科技有限公司 | Digital pulse type direct current manual arc welding method and electric arc welding machine applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20171022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |