CN104028876B - Inverter welding machine control circuit - Google Patents
Inverter welding machine control circuit Download PDFInfo
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- CN104028876B CN104028876B CN201410289537.4A CN201410289537A CN104028876B CN 104028876 B CN104028876 B CN 104028876B CN 201410289537 A CN201410289537 A CN 201410289537A CN 104028876 B CN104028876 B CN 104028876B
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- 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
-
- 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
- B23K9/1012—Power supply characterised by parts of the process
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- Physics & Mathematics (AREA)
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- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of inverter welding machine control circuit, comprise governor circuit and output circuit, described governor circuit is connected with output circuit; Described inverter welding machine control circuit also comprises the antiseized circuit that prevents welding rod and workpiece adhesion.Above-mentioned inverter welding machine control circuit can avoid welding rod and workpiece to be sticked together.
Description
Technical field
The present invention relates to electric welding machine technical field, is specifically a kind of inverter welding machine control circuit.
Background technology
The inverter welding machine control circuit of prior art comprises governor circuit and output circuit, and described governor circuit is connected with output circuit.The inverter type welder of said structure control circuit is used to have the following disadvantages: welder is when welding, and especially opening arc moment, welding rod is easy to be sticked together with workpiece, causes and cannot continue welding.This not only makes welding interrupt, and then affects welding efficiency, and both short circuits directly can cause device damage or the accident of personal safety occurs to threaten.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of inverter welding machine control circuit that welding rod and workpiece can be avoided to be sticked together.
Technical scheme of the present invention is, provides a kind of inverter welding machine control circuit, comprises governor circuit and output circuit, and described governor circuit is connected with output circuit; Described inverter welding machine control circuit also comprises the antiseized circuit that prevents welding rod and workpiece adhesion, described antiseized circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, R9, electric capacity C1, C2, C3, C4, C5, diode D1, D2, D3, D4, Zener diode VD1, rheostat VR1, electrochemical capacitor C11, photoelectrical coupler E1, comparator U1, reverser U2 and U3, electronic switch U4; One end of described resistance R1, one end of resistance R2 are connected with the both positive and negative polarity of output circuit respectively; The other end of described resistance R1 is connected with one end of one end of electric capacity C1, electric capacity C2, the input cathode of photoelectrical coupler E1; The other end of described resistance R2 is connected with the other end of the other end of electric capacity C1, electric capacity C2, the input anode of photoelectrical coupler E1; The output head anode of described photoelectrical coupler E1 is connected with one end of working power positive pole, resistance R4; The negative pole of output end of described photoelectrical coupler E1 is connected with the positive pole of one end of electric capacity C3, comparator U1; The other end of described resistance R4 is connected with the negative pole of one end of resistance R5, comparator U1; One end of the other end of described resistance R5 and the other end of electric capacity C3, electric capacity C4, the anode of diode D1, the negative pole of electrochemical capacitor C11 are connected; The output of described comparator U1 is connected with one end of resistance R6, and the other end of described resistance R6 is connected with the negative electrode of the other end of electric capacity C4, diode D1, the input of reverser U2; The output of described reverser U2 is connected with one end of one end of resistance R7, resistance R8, the negative electrode of diode D2; The anode of described diode D2 is connected with one end of resistance R9, and the other end of described resistance R9 is connected with the other end of the positive pole of electrochemical capacitor C11, resistance R8, the input of reverser U2; The output of described reverser U2 is connected with the control end of electronic switch U4; The other end of described resistance R7 is connected with one end of the negative electrode of diode D3, electric capacity C5, a link of electronic switch U4; The anode of described diode D3 is connected with the sliding end of rheostat VR1; One electric connecting terminal of described rheostat VR1 is connected with the positive pole of working power, and another electric connecting terminal of described rheostat VR1 is connected with the negative electrode of the other end of electric capacity C5, diode D4; The anode of described diode D4 is connected with the anode of Zener diode VD1, the negative electrode of described Zener diode VD1 is connected with another link of electronic switch U4, rheostatic signal output part, and described rheostatic other two ends are connected with+5V power supply and common ground end respectively.
Described inverter welding machine control circuit also comprises one for the short-circuit control circuit of boiled short dot by force, and described short-circuit control circuit comprises resistance R10, R11, R12, R13, R14, R15, R16, diode D5, comparator U5 and U6; One end of described resistance R10 is connected with the negative pole of output end of photoelectrical coupler E1, the other end of described resistance R10 is connected with one end of resistance R11, one end of resistance R12; The other end of described resistance R11 is connected with common ground end; The other end of described resistance R12 is connected with one end of the electrode input end of comparator U5, resistance R13; The other end of described resistance R13 is connected with working power negative pole, and the negative input of described comparator U5 is connected with one end of the output of comparator U5, resistance R14; The other end of described resistance R14 is connected with the negative input of comparator U6; The electrode input end of described comparator U6 is connected with common ground end; The output of described comparator U6 is connected with one end of resistance R15, and the other end of described resistance R15 is connected with the anode of diode D5; The negative electrode of described diode D5 is connected with one end of resistance R16, and the other end of described resistance R16 is connected with a link of electronic switch U4.
After adopting above structure, the present invention compared with prior art, has the following advantages:
During inverter welding machine control circuit normal weld of the present invention, the generating positive and negative voltage of output circuit can impel photoelectrical coupler E1 conducting, now the electrode input end of comparator U1 is positive voltage, and therefore comparator U1 exports high level, after two reversers U2, U3, the G pole input high level of electronic switch U4, make A pole and the conducting of K pole of electronic switch U4, at this moment the given value of current signal of rheostat VR1 is normal, causes namely to the current signal of governor circuit, now, the normal work of inversion welding; If time welding rod and workpiece bond together, then the voltage of output is shorted, and photoelectrical coupler E1 can not conducting, and now the electrode input end of comparator U1 is zero, therefore comparator U1 output low level, after two reverser U2, owing to being now high level, therefore electric capacity C11 starts charging, through general 2 seconds, U3 output just becomes low level, and output current reduces to small area analysis rapidly, thus avoids welding rod and workpiece bonds together.Meanwhile, short circuit when can prevent the starting the arc like this and the of short duration short circuit in welding process, misjudgedly break as welding rod is bonding with workpiece.Because inverter welding machine control circuit of the present invention can eliminate short circuit in time in the moment of welding rod and workpiece adhesion, thus continued welding.This not only makes the interruption of welding reduce, and then ensure that welding efficiency, and decreases the device damage that both short circuits cause or the accident that personal safety occurs to threaten.
As improvement, described inverter welding machine control circuit also comprises one for forcing the short-circuit control circuit of boiled short dot, and described short-circuit control circuit comprises resistance R10, R11, R12, R13, R14, R15, R16, diode D5, comparator U5 and U6; One end of described resistance R10 is connected with the negative pole of output end of photoelectrical coupler E1, the other end of described resistance R10 is connected with one end of resistance R11, one end of resistance R12; The other end of described resistance R11 is connected with common ground end; The other end of described resistance R12 is connected with one end of the electrode input end of comparator U5, resistance R13; The other end of described resistance R13 is connected with working power negative pole, and the negative input of described comparator U5 is connected with one end of the output of comparator U5, resistance R14; The other end of described resistance R14 is connected with the negative input of comparator U6; The electrode input end of described comparator U6 is connected with common ground end; The output of described comparator U6 is connected with one end of resistance R15, and the other end of described resistance R15 is connected with the anode of diode D5; The negative electrode of described diode D5 is connected with one end of resistance R16, and the other end of described resistance R16 is connected with a link of electronic switch U4.If occur, welding rod is bonding with workpiece, then photoelectrical coupler E1 not conducting, now the electrode input end of comparator U5 is negative voltage, comparator U5 output low level, then through comparator U6, export high level, this high level has been added on the Setting signal of rheostat VR1, and Setting signal is increased, at this moment by output big current, about about 60-70A, this electric current will force boiled short dot.If electric capacity there is no the boiled trip point of method in 2 seconds, then the circuit of previous section is by action, is dropped to by output current rapidly minimum.If after boiled short dot, photoelectrical coupler E1 conducting again, makes the given value of current signal of rheostat VR1 normal, thus carries out normal welding job state.By short-circuit control circuit can within the charging interval of electric capacity C11 boiled short dot by force, thus avoid the bonding of welding rod and workpiece.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of inverter welding machine control circuit of the present invention.
Fig. 2 is the circuit theory diagrams of antiseized circuit and short-circuit control circuit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1 and Figure 2, a kind of inverter welding machine control circuit of the present invention, comprise governor circuit and output circuit, described governor circuit is connected with output circuit, is more than prior art; Described inverter welding machine control circuit also comprises the antiseized circuit (structure as in square frame in Fig. 2) that prevents welding rod and workpiece adhesion, described antiseized circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, R9, electric capacity C1, C2, C3, C4, C5, diode D1, D2, D3, D4, Zener diode VD1, rheostat VR1, electrochemical capacitor C11, photoelectrical coupler E1, comparator U1, reverser U2 and U3, electronic switch U4; One end of described resistance R1, one end of resistance R2 are connected with the both positive and negative polarity of output circuit respectively, and namely output circuit has positive and negative output; The other end of described resistance R1 is connected with one end of one end of electric capacity C1, electric capacity C2, the input cathode of photoelectrical coupler E1; The other end of described resistance R2 is connected with the other end of the other end of electric capacity C1, electric capacity C2, the input anode of photoelectrical coupler E1; The output head anode of described photoelectrical coupler E1 is connected with one end of working power positive pole, resistance R4, connects+the 15V of working power herein; The negative pole of output end of described photoelectrical coupler E1 is connected with the positive pole of one end of electric capacity C3, comparator U1; The other end of described resistance R4 is connected with the negative pole of one end of resistance R5, comparator U1; One end of the other end of described resistance R5 and the other end of electric capacity C3, electric capacity C4, the anode of diode D1, the negative pole of electrochemical capacitor C11 are connected; The output of described comparator U1 is connected with one end of resistance R6, and the other end of described resistance R6 is connected with the negative electrode of the other end of electric capacity C4, diode D1, the input of reverser U2; The output of described reverser U2 is connected with one end of one end of resistance R7, resistance R8, the negative electrode of diode D2; The anode of described diode D2 is connected with one end of resistance R9, and the other end of described resistance R9 is connected with the other end of the positive pole of electrochemical capacitor C11, resistance R8, the input of reverser U2; The output of described reverser U2 is connected with the control end of electronic switch U4; The other end of described resistance R7 is connected with one end of the negative electrode of diode D3, electric capacity C5, a link of electronic switch U4; The anode of described diode D3 is connected with the sliding end of rheostat VR1; One electric connecting terminal of described rheostat VR1 is connected with the positive pole of working power, connect+the 5V of working power herein; Another electric connecting terminal of described rheostat VR1 is connected with the negative electrode of the other end of electric capacity C5, diode D4; The anode of described diode D4 is connected with the anode of Zener diode VD1, and the negative electrode of described Zener diode VD1 is connected with the signal input part of another link of electronic switch U4, governor circuit, and 2 pin being namely CON2 with the signal input part of governor circuit are connected; The CON2 place of existing governor circuit fills a rheostat, and rheostatic signal output part is connected with 2 pin of CON2, and rheostatic other two ends are connected with+5V power supply and common ground end respectively.
Described inverter welding machine control circuit also comprises one for the short-circuit control circuit of boiled short dot by force, and described short-circuit control circuit comprises resistance R10, R11, R12, R13, R14, R15, R16, diode D5, comparator U5 and U6; One end of described resistance R10 is connected with the negative pole of output end of photoelectrical coupler E1, the other end of described resistance R10 is connected with one end of resistance R11, one end of resistance R12; The other end of described resistance R11 is connected with common ground end; The other end of described resistance R12 is connected with one end of the electrode input end of comparator U5, resistance R13; The other end of described resistance R13 is connected with working power negative pole, and the negative input of described comparator U5 is connected with one end of the output of comparator U5, resistance R14; The other end of described resistance R14 is connected with the negative input of comparator U6, and supply voltage is herein-15V; The electrode input end of described comparator U6 is connected with common ground end; The output of described comparator U6 is connected with one end of resistance R15, and the other end of described resistance R15 is connected with the anode of diode D5; The negative electrode of described diode D5 is connected with one end of resistance R16, and the other end of described resistance R16 is connected with a link of electronic switch U4.
Inverter welding machine control circuit work of the present invention is divided into three phases.Antiseized one-phase: phase detected signal, when machine is for welding, antiseized circuit automatic detecting machine device status, when being detected as normal weld state, antiseized circuit is failure to actuate, but is on the alert all the time.When being detected as solder shorts state, antiseized circuit starts action and enters the antiseized two-stage.
The antiseized two-stage: when being detected as solder shorts state, antiseized circuit starts action and enters this stage, the big current that control circuit will force output one fixing, is accumulated on original electric current, about 60-70A, removes the short dot that fuses.This heavy current impact of general process, short dot can disconnect.Now, machine enters again normal weld state, so be when welding behaviour personnel and having no to discover substantially, has just dissolved short circuit adhesion state, this time of 2 seconds of process need.
Antiseized three stages: if short dot is comparatively large more firm, in 2 seconds, force big current still cannot boiled short dot, it be still short-circuit condition that circuit detects output automatically, after 2 seconds, output current reduces to rapidly safe small area analysis, enters antiseized three stages. and avoid welding equipment to damage and initiation fire hidden danger.
Below only just most preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims.The present invention is not limited only to above embodiment, and its concrete structure allows to change.In every case the various change done in the protection domain of independent claims of the present invention is all in protection scope of the present invention.
Claims (2)
1. an inverter welding machine control circuit, comprises governor circuit and output circuit, and described governor circuit is connected with output circuit; It is characterized in that: described inverter welding machine control circuit also comprises the antiseized circuit that prevents welding rod and workpiece adhesion, described antiseized circuit comprises resistance R1, R2, R3, R4, R5, R6, R7, R8, R9, electric capacity C1, C2, C3, C4, C5, diode D1, D2, D3, D4, Zener diode VD1, rheostat VR1, electrochemical capacitor C11, photoelectrical coupler E1, comparator U1, reverser U2 and U3, electronic switch U4; One end of described resistance R1, one end of resistance R2 are connected with the both positive and negative polarity of output circuit respectively; The other end of described resistance R1 is connected with one end of one end of electric capacity C1, electric capacity C2, the input cathode of photoelectrical coupler E1; The other end of described resistance R2 is connected with the other end of the other end of electric capacity C1, electric capacity C2, the input anode of photoelectrical coupler E1; The output head anode of described photoelectrical coupler E1 is connected with one end of working power positive pole, resistance R4; The negative pole of output end of described photoelectrical coupler E1 is connected with the positive pole of one end of electric capacity C3, comparator U1; The other end of described resistance R4 is connected with the negative pole of one end of resistance R5, comparator U1; One end of the other end of described resistance R5 and the other end of electric capacity C3, electric capacity C4, the anode of diode D1, the negative pole of electrochemical capacitor C11 are connected; The output of described comparator U1 is connected with one end of resistance R6, and the other end of described resistance R6 is connected with the negative electrode of the other end of electric capacity C4, diode D1, the input of reverser U2; The output of described reverser U2 is connected with one end of one end of resistance R7, resistance R8, the negative electrode of diode D2; The anode of described diode D2 is connected with one end of resistance R9, and the other end of described resistance R9 is connected with the other end of the positive pole of electrochemical capacitor C11, resistance R8, the input of reverser U2; The output of described reverser U2 is connected with the control end of electronic switch U4; The other end of described resistance R7 is connected with one end of the negative electrode of diode D3, electric capacity C5, a link of electronic switch U4; The anode of described diode D3 is connected with the sliding end of rheostat VR1; One electric connecting terminal of described rheostat VR1 is connected with the positive pole of working power, and another electric connecting terminal of described rheostat VR1 is connected with the negative electrode of the other end of electric capacity C5, diode D4; The anode of described diode D4 is connected with the anode of Zener diode VD1, the negative electrode of described Zener diode VD1 is connected with another link of electronic switch U4, rheostatic signal output part, and described rheostatic other two ends are connected with+5V power supply and common ground end respectively.
2. inverter welding machine control circuit according to claim 1, it is characterized in that: described inverter welding machine control circuit also comprises one for the short-circuit control circuit of boiled short dot by force, described short-circuit control circuit comprises resistance R10, R11, R12, R13, R14, R15, R16, diode D5, comparator U5 and U6; One end of described resistance R10 is connected with the negative pole of output end of photoelectrical coupler E1, the other end of described resistance R10 is connected with one end of resistance R11, one end of resistance R12; The other end of described resistance R11 is connected with common ground end; The other end of described resistance R12 is connected with one end of the electrode input end of comparator U5, resistance R13; The other end of described resistance R13 is connected with working power negative pole, and the negative input of described comparator U5 is connected with one end of the output of comparator U5, resistance R14; The other end of described resistance R14 is connected with the negative input of comparator U6; The electrode input end of described comparator U6 is connected with common ground end; The output of described comparator U6 is connected with one end of resistance R15, and the other end of described resistance R15 is connected with the anode of diode D5; The negative electrode of described diode D5 is connected with one end of resistance R16, and the other end of described resistance R16 is connected with a link of electronic switch U4.
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| CN201410289537.4A CN104028876B (en) | 2014-06-25 | 2014-06-25 | Inverter welding machine control circuit |
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| CN201410289537.4A CN104028876B (en) | 2014-06-25 | 2014-06-25 | Inverter welding machine control circuit |
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| CN104028876A CN104028876A (en) | 2014-09-10 |
| CN104028876B true CN104028876B (en) | 2015-10-28 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106862725B (en) * | 2017-01-19 | 2019-07-12 | 上海广为焊接设备有限公司 | The anti-stick circuit of inverter type welder |
| CN109604772B (en) * | 2018-12-30 | 2020-09-29 | 上海广为焊接设备有限公司 | Circuit for improving arc striking success rate and stability of inverter argon arc welding machine |
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| CN201735932U (en) * | 2010-09-21 | 2011-02-09 | 深圳市华意隆实业发展有限公司 | Inverter type arc-welding machine with anti-sticking function and sticking arc lifting function |
| CN202506938U (en) * | 2012-03-20 | 2012-10-31 | 浙江肯得机电股份有限公司 | Circuit structure of inverter arc welding machine with high anti-interference performance |
| CN202894541U (en) * | 2012-08-31 | 2013-04-24 | 苏州市双马机电有限公司 | Limited delay transposing full-bridge soft switching inversion manual electric arc welder |
| CN202894547U (en) * | 2012-11-18 | 2013-04-24 | 盐城鼎力达焊接科技有限公司 | Anti-sticking functional circuit for insulated grid bipolar transistor (IGBT) type high-frequency invert direct current (DC) electric welder |
| CN203900707U (en) * | 2014-06-25 | 2014-10-29 | 宁波欧罗巴焊割科技有限公司 | Control circuit of inverter welding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5758115B2 (en) * | 2010-12-15 | 2015-08-05 | 株式会社ダイヘン | Arc welding machine |
| KR101421935B1 (en) * | 2012-08-06 | 2014-08-11 | 손보승 | Welding current controlling apparatus for shielded arc welding machine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201735932U (en) * | 2010-09-21 | 2011-02-09 | 深圳市华意隆实业发展有限公司 | Inverter type arc-welding machine with anti-sticking function and sticking arc lifting function |
| CN202506938U (en) * | 2012-03-20 | 2012-10-31 | 浙江肯得机电股份有限公司 | Circuit structure of inverter arc welding machine with high anti-interference performance |
| CN202894541U (en) * | 2012-08-31 | 2013-04-24 | 苏州市双马机电有限公司 | Limited delay transposing full-bridge soft switching inversion manual electric arc welder |
| CN202894547U (en) * | 2012-11-18 | 2013-04-24 | 盐城鼎力达焊接科技有限公司 | Anti-sticking functional circuit for insulated grid bipolar transistor (IGBT) type high-frequency invert direct current (DC) electric welder |
| CN203900707U (en) * | 2014-06-25 | 2014-10-29 | 宁波欧罗巴焊割科技有限公司 | Control circuit of inverter welding machine |
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Address after: 315100 No. 169 Shanshan Road, Wangchun Industrial Park, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Europa Technology Co., Ltd. Address before: 315177 No. 169 Shanshan Road, Wangchun Industrial Park, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: Ningbo Europa welding Science and Technology Ltd. |
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