CN201157945Y - Isolated argon arc-welding set welding gun switch signal capturing circuit of transformer - Google Patents
Isolated argon arc-welding set welding gun switch signal capturing circuit of transformer Download PDFInfo
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- CN201157945Y CN201157945Y CNU2008200182527U CN200820018252U CN201157945Y CN 201157945 Y CN201157945 Y CN 201157945Y CN U2008200182527 U CNU2008200182527 U CN U2008200182527U CN 200820018252 U CN200820018252 U CN 200820018252U CN 201157945 Y CN201157945 Y CN 201157945Y
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Abstract
The utility model provides a welding gun switching signal acquisition circuit of an argon arc welder by adopting transformer isolation. The acquisition circuit comprises an isolation transformer, an input circuit, a bleeder circuit and an output circuit. The isolating transformer is provided with three windings, namely a partial pressure winding, an input winding and an output winding; the bleeder circuit, the input circuit and the output circuit are connected with the partial pressure winding, the input winding and the output winding respectively. The acquisition circuit adopts transformer isolation, and compared with the welding gun switching signal acquisition circuit by adopting the relay or photoelectric coupling electrical isolation, the acquisition circuit has the advantages of simple circuit and high reliability.
Description
Technical field
The utility model relates to a kind of argon arc welding machine arc welding gun switch signal acquisition circuit, belongs to the argon arc welding machine technical field.
Background technology
In the prior art, the collection of known argon arc welding machine arc welding gun switch signal needs the inductance filtering interfering, and the electrical isolation of relay or optocoupler, fault rate height, and cost height.
Summary of the invention
The utility model is the deficiency that exists at existing argon arc welding machine arc welding gun switch Signal Collection Technology, and the argon arc welding machine arc welding gun switch signal acquisition circuit of the transformer isolation that a kind of circuit is simple, reliability is high is provided.
The utility model is realized by following technical measures:
The argon arc welding machine arc welding gun switch signal acquisition circuit of transformer isolation comprises isolating transformer, input circuit, bleeder circuit and output circuit, isolating transformer has three windings, be respectively dividing potential drop winding, input winding and output winding, bleeder circuit, input circuit and output circuit are connected with dividing potential drop winding, input winding and output winding respectively.
Input circuit is made up of the input winding of capacitor C 2, capacitor C 3, capacitor C 4, diode D2 and isolating transformer, the positive pole of one terminating diode D2 of input winding, the negative pole of diode D2 connects an end of capacitor C 2, the other end of another termination input winding of capacitor C 2, capacitor C 3 and C4 series connection back are in parallel with capacitor C 2, the node ground connection of C3 and C4, the C2 node in parallel with C3, C4 connects arc welding gun switch.
Bleeder circuit is made up of the dividing potential drop windings in series of ac square wave source V1, divider resistance R1 and isolating transformer.
Output circuit is by diode D1, capacitor C 1, resistance R 2, light emitting diode D3, optocoupler U1, the output winding of triode Q1 and isolating transformer is formed, the positive pole of one terminating diode D1 of output winding, the negative pole of diode D1 connects an end of capacitor C 1, the other end of another termination output winding of capacitor C 1, capacitor C 1 is in parallel with resistance R 2, the negative pole of the cathode connecting diode D1 of light emitting diode D3, the negative pole of light emitting diode D3 connects No. 1 pin of optocoupler U1, No. 2 pin of optocoupler U1 are connected with the other end of output winding, No. 4 pin of optocoupler U1 are connected with the base stage b of triode Q1, the emitter e of triode Q1 is connected to power supply through resistance R 3, ground connection after No. 3 pin of optocoupler U1 link to each other with the colelctor electrode c of triode Q1.
Argon arc welding machine arc welding gun switch signal acquisition circuit of the present utility model adopts transformer isolation, the on off state of arc welding gun switch can change the voltage of isolating transformer input winding, press arc welding gun switch, isolating transformer input winding is by the arc welding gun switch short circuit, voltage on the input winding falls thereupon, turn ratio relation according to transformer, voltage on the output winding also can fall, adjust the resistance of divider resistance R1, the voltage that makes arc welding gun switch press back isolating transformer output winding can not make optocoupler U1 conducting, then also not conducting of triode Q1, output voltage V o is a high level; Otherwise, unclamp arc welding gun switch, triode Q1 conducting, output voltage V o is a low level.Compare with the arc welding gun switch signal acquisition circuit that adopts relay or optocoupler electrical isolation, the utility model circuit is simple, the reliability height.
Description of drawings
Accompanying drawing is circuit theory diagrams of the present utility model.
Wherein: 1, isolating transformer, 2, input circuit, 3, bleeder circuit, 4, output circuit, 5, arc welding gun switch.
The specific embodiment
By accompanying drawing provide circuit theory diagrams as can be seen, the argon arc welding machine arc welding gun switch signal acquisition circuit of transformer isolation of the present utility model mainly comprises isolating transformer 1, input circuit 2, bleeder circuit 3 and output circuit 4.Isolating transformer 1 have three winding dividing potential drop windings 2., the input winding 1. with output winding 3., the input winding 1. with output winding 3. in a side.1. input circuit 2 is made up of the input winding of capacitor C 2, capacitor C 3, capacitor C 4, diode D2, isolating transformer 1, the positive pole of an input winding terminating diode D2 1., the negative pole of diode D2 connects an end of capacitor C 2, another termination input winding other end 1. of capacitor C 2, capacitor C 3 and C4 series connection back are in parallel with capacitor C 2, the node ground connection of C3 and C4, the C2 node in parallel with C3, C4 connects arc welding gun switch 5.2. bleeder circuit 3 is composed in series by the dividing potential drop winding of ac square wave source V1 and divider resistance R1 and isolating transformer 1.Output circuit 4 is by diode D1, capacitor C 1, resistance R 2, light emitting diode D3, optocoupler U1,3. the output winding of triode Q1 and isolating transformer 1 is formed, the positive pole of an output winding terminating diode D1 3., the negative pole of diode D1 connects an end of capacitor C 1, another termination output winding other end 3. of capacitor C 1, capacitor C 1 is in parallel with resistance R 2, the negative pole of diode D1 is the positive pole of sending and receiving optical diode D3 also, the negative pole of light emitting diode D3 connects No. 1 pin of optocoupler U1, No. 2 pin of optocoupler U1 are connected with the output winding other end 3., No. 4 pin of optocoupler U1 are connected with the base stage b of triode Q1, the emitter e of triode Q1 is connected to power supply+Vcc through resistance R 3, ground connection after No. 3 pin of optocoupler U1 link to each other with the colelctor electrode c of triode Q1, the voltage between the emitter e of triode Q1 and the colelctor electrode c is the output voltage V o of output circuit 4.
The on off state of arc welding gun switch can change isolating transformer input winding voltage 1., press arc welding gun switch, the input winding is 1. by arc welding gun switch 5 short circuits, the voltage that 1. the input winding is gone up falls thereupon, turn ratio relation according to transformer, ac square wave source V1 drops to the voltage that 2. isolating transformer dividing potential drop winding go up and transfers on the divider resistance R1,3. the output winding of same isolating transformer also can fall, adjust the resistance of divider resistance R1, make arc welding gun switch 5 press back isolating transformer output winding voltage 3. and can not make optocoupler U1 conducting, then also not conducting of triode Q1, output voltage V o is a high level; Otherwise, unclamp arc welding gun switch 5, triode Q1 conducting, output voltage V o is a low level.
Claims (4)
1. the argon arc welding machine arc welding gun switch signal acquisition circuit of a transformer isolation, comprise isolating transformer, input circuit, bleeder circuit and output circuit, it is characterized in that: isolating transformer has three windings, be respectively dividing potential drop winding, input winding and output winding, bleeder circuit, input circuit and output circuit are connected with dividing potential drop winding, input winding and output winding respectively.
2. the argon arc welding machine arc welding gun switch signal acquisition circuit of transformer isolation according to claim 1, it is characterized in that: described input circuit is made up of the input winding of capacitor C 2, capacitor C 3, capacitor C 4, diode D2 and isolating transformer, the positive pole of one terminating diode D2 of input winding, the negative pole of diode D2 connects an end of capacitor C 2, the other end of another termination input winding of capacitor C 2, capacitor C 3 and C4 series connection back are in parallel with capacitor C 2, the node ground connection of C3 and C4, the C2 node in parallel with C3, C4 connects arc welding gun switch.
3. the argon arc welding machine arc welding gun switch signal acquisition circuit of transformer isolation according to claim 1, it is characterized in that: described bleeder circuit is made up of the dividing potential drop windings in series of ac square wave source V1, divider resistance R1 and isolating transformer.
4. the argon arc welding machine arc welding gun switch signal acquisition circuit of transformer isolation according to claim 1, it is characterized in that: described output circuit is by diode D1, capacitor C 1, resistance R 2, light emitting diode D3, optocoupler U1, the output winding of triode Q1 and isolating transformer is formed, the positive pole of one terminating diode D1 of output winding, the negative pole of diode D1 connects an end of capacitor C 1, the other end of another termination output winding of capacitor C 1, capacitor C 1 is in parallel with resistance R 2, the negative pole of the cathode connecting diode D1 of light emitting diode D3, the negative pole of light emitting diode D3 connects No. 1 pin of optocoupler U1, No. 2 pin of optocoupler U1 are connected with the other end of output winding, No. 4 pin of optocoupler U1 are connected with the base stage b of triode Q1, the emitter e of triode Q1 is connected to power supply through resistance R 3, ground connection after No. 3 pin of optocoupler U1 link to each other with the colelctor electrode c of triode Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200182527U CN201157945Y (en) | 2008-02-29 | 2008-02-29 | Isolated argon arc-welding set welding gun switch signal capturing circuit of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200182527U CN201157945Y (en) | 2008-02-29 | 2008-02-29 | Isolated argon arc-welding set welding gun switch signal capturing circuit of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN201157945Y true CN201157945Y (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200182527U Expired - Lifetime CN201157945Y (en) | 2008-02-29 | 2008-02-29 | Isolated argon arc-welding set welding gun switch signal capturing circuit of transformer |
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| CN (1) | CN201157945Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127221A (en) * | 2017-12-29 | 2018-06-08 | 上海广为焊接设备有限公司 | Ac square wave welding machine active clamp device |
-
2008
- 2008-02-29 CN CNU2008200182527U patent/CN201157945Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108127221A (en) * | 2017-12-29 | 2018-06-08 | 上海广为焊接设备有限公司 | Ac square wave welding machine active clamp device |
| CN108127221B (en) * | 2017-12-29 | 2020-03-20 | 上海广为焊接设备有限公司 | Active clamping device of alternating-current square wave welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG AOTAI ELECTRIC CO., LTD. Free format text: FORMER NAME: SHANDONG SHANDA AOTAI ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 250100 No. 282 Bole Road, hi tech Development Zone, Shandong, Ji'nan Patentee after: Shandong Aotai Electric Co., Ltd. Address before: 250101 hi tech Development Zone, Shandong, Ji'nan Patentee before: Shandong Sdu Aotai Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081203 |