CN206047316U - A kind of arc welding gun switch isolation circuit - Google Patents
A kind of arc welding gun switch isolation circuit Download PDFInfo
- Publication number
- CN206047316U CN206047316U CN201620699854.8U CN201620699854U CN206047316U CN 206047316 U CN206047316 U CN 206047316U CN 201620699854 U CN201620699854 U CN 201620699854U CN 206047316 U CN206047316 U CN 206047316U
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- welding gun
- arc welding
- electric capacity
- isolating transformer
- resistance
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Abstract
The utility model discloses a kind of arc welding gun switch isolation circuit, including arc welding gun switch X1, isolating transformer T1, diode D2 and resistance R2, one end connection electric capacity C5 and arc welding gun switch X1 of the winding N1 of the isolating transformer T1, the other end of the winding N1 of isolating transformer T1 connects the other end of electric capacity C8 and arc welding gun switch X1, and one end connection resistance R2, the electric capacity C1 and electric capacity C4 of the winding N2 of isolating transformer T1 are simultaneously grounded.This utility model arc welding gun switch isolation circuit Butt welding gun is switched carries out high_voltage isolation with panel circuit, by the magnetic coupling principle of isolating transformer, the control signal of arc welding gun switch is transferred to secondary by isolating transformer primary, realizes that the control to TIG Welding Machine with CUT is turned on and shut-off.
Description
Technical field
This utility model is related to a kind of on-off circuit, specifically a kind of arc welding gun switch isolation circuit.
Background technology
Ac arc wedling machine, also known as arc welding transformer, is a kind of special transformator, and it becomes the alternating current of networking voltage
It is suitable for the low-voltage AC of arc-welding, is made up of main transformer and required regulation part and instruction device etc..Ac arc wedling machine
In, most widely used at present is moving-iron type AC welding set.
Electronic Control contravariant arc welder in the market, inverter type welder manufacturer are a lot, and product quality thousand is poor
Ten thousand are not, TIG Welding Machine and CUT, and arc welding gun switch is pressed during the starting the arc, with high-frequency and high-voltage in welding machine work, its
Serious interference is produced to circuitry, be there is interference and made the bad risk such as arc welding gun switch misoperation or damage, add welding gun
After switch isolation circuit so that arc welding gun switch is completely independent with current control part device, circuit has good anti-tampering ability,
Also reduce and distribution capacity, coupling inductance Jing cable flowed through coupled to arc welding gun switch due to high-frequency high-voltage, make arc welding gun switch or
Internal control circuit damages phenomenon, improves overall, the security performance of welding machine, so as to meet European CE standards.
A kind of arc welding gun switch isolation circuit of this utility model key design, it is by the magnetic coupling principle of isolating transformer, real
The now control to TIG Welding Machine with CUT is turned on and shut-off.
Utility model content
The purpose of this utility model is to provide a kind of arc welding gun switch isolation circuit, to solve to propose in above-mentioned background technology
Problem.
For achieving the above object, this utility model provides following technical scheme：
A kind of arc welding gun switch isolation circuit, including arc welding gun switch X1, isolating transformer T1, diode D2 and resistance R2, institute
One end connection electric capacity C5 and arc welding gun switch X1 of the winding N1 of isolating transformer T1 is stated, the winding N1's of isolating transformer T1 is another
The other end of end connection electric capacity C8 and arc welding gun switch X1, one end connection resistance R2 of the winding N2 of isolating transformer T1, electric capacity C1
With electric capacity C4 and it is grounded, the other end of the winding N2 of isolating transformer T1 connects the winding N3 of isolating transformer T1, isolates transformation
The other end of the winding N3 of device T1 connects the anode of diode D2, the negative electrode of the negative electrode connection diode Z1 of diode D2, resistance
The other end of the other end and electric capacity C4 of R2, the anode connection resistance R3 of diode Z1, the other end connection electric capacity C1 of resistance R3
With the base stage of audion Q2, the negative electrode of colelctor electrode connection diode Z2 and the anode of resistance R7, diode Z2 of audion Q2 connect
The base stage of audion Q1, the colelctor electrode connection resistance R8 of audion Q1 and photo-coupler U2 feet 1 are connect, photo-coupler U2 feet 2 connect
The emitter stage of the emitter stage and audion Q2 of audion Q1 is simultaneously grounded, the other end connection electric capacity C2 of resistance R7, electric capacity C3, resistance
The foot 12 of R1 and chip U1, the other end of resistance R1 connect the negative electrode of diode D1, the anode connection power supply VCC of diode D1.
As preferred version of the present utility model：Model TL494 of the chip U1, the model of photo-coupler U2
PC817。
Compared with prior art, the beneficial effects of the utility model are：This utility model arc welding gun switch isolation circuit butt welding
Rifle is switched carries out high_voltage isolation with panel circuit, by the magnetic coupling principle of isolating transformer, the control of arc welding gun switch is believed
Number secondary is transferred to by isolating transformer primary, realizes the control conducting to TIG Welding Machine and CUT and close
It is disconnected.
Description of the drawings
Circuit diagrams of the Fig. 1 for arc welding gun switch isolation circuit.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1, a kind of arc welding gun switch isolation circuit, including arc welding gun switch X1, isolating transformer T1, diode D2 and
Resistance R2, the winding N1 of the isolating transformer T1 one end connection electric capacity C5 and arc welding gun switch X1, isolating transformer T1 around
The other end of group N1 connects the other end of electric capacity C8 and arc welding gun switch X1, one end connection resistance of the winding N2 of isolating transformer T1
R2, electric capacity C1 and electric capacity C4 are simultaneously grounded, and the other end of the winding N2 of isolating transformer T1 connects the winding N3 of isolating transformer T1,
The other end of the winding N3 of isolating transformer T1 connects the anode of diode D2, and the negative electrode of diode D2 connects the moon of diode Z1
The other end of pole, the other end of resistance R2 and electric capacity C4, the anode connection resistance R3 of diode Z1, the other end connection of resistance R3
The base stage of electric capacity C1 and audion Q2, the negative electrode and resistance R7 of the colelctor electrode connection diode Z2 of audion Q2, diode Z2's
The base stage of anode connecting triode Q1, the colelctor electrode connection resistance R8 of audion Q1 and photo-coupler U2 feet 1, photo-coupler U2 feet
The emitter stage of the emitter stage and audion Q2 of 2 connecting triode Q1 is simultaneously grounded, the other end connection electric capacity C2 of resistance R7, electric capacity
The foot 12 of C3, resistance R1 and chip U1, the other end of resistance R1 connect the negative electrode of diode D1, the anode connection electricity of diode D1
Source VCC.
Model TL494 of chip U1, model PC817 of photo-coupler U2.
Operation principle of the present utility model is：Wherein arc welding gun switch isolation circuit is overall, the safety to improve welding machine
Performance and design, as shown in figure 1, this circuit mainly consist of chip U1, resistance R4, electric capacity C2, electric capacity C3, electric capacity C6 composition
Square-wave generator, according to the characteristic of isolating transformer, (transformer secondary output open circuit), transformator when arc welding gun switch disconnects
Induction reactance internal resistance is big, and isolating transformer T1 produces induction electromotive force Jing after diode D2 rectifications, resistance R2, electric capacity C4 filtering, produces
One high voltage level, this high level control audion Q2 conductings Jing after stabilivolt Z1, resistance R3, electric capacity C1 so that audion Q1
Cut-off, and then cause photo-coupler U2 conductings so that envelope ripple signal over the ground, causes welding machine not work.When arc welding gun switch is closed
(i.e. transformer secondary output short circuit), induction reactance internal resistance is little, and isolating transformer T1 does not produce induction electromotive force so that audion Q1 is turned on,
Optocoupler U2 ends, welding machine normal work.Electric capacity C5, electric capacity C8 are that the various interference on rifle thread switching control absorb.
This utility model arc welding gun switch isolation circuit Butt welding gun is switched carries out high_voltage isolation with panel circuit, by isolation
The magnetic coupling principle of transformator, is transferred to secondary by isolating transformer primary the control signal of arc welding gun switch, realizes to tungsten
Electrode argon arc welding machine is turned on and shut-off with the control of CUT.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in this utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (2)
1. a kind of arc welding gun switch isolation circuit, including arc welding gun switch X1, isolating transformer T1, diode D2 and resistance R2, which is special
Levy and be, one end of the winding N1 of isolating transformer T1 connection electric capacity C5 and arc welding gun switch X1, isolating transformer T1 around
The other end of group N1 connects the other end of electric capacity C8 and arc welding gun switch X1, one end connection resistance of the winding N2 of isolating transformer T1
R2, electric capacity C1 and electric capacity C4 are simultaneously grounded, and the other end of the winding N2 of isolating transformer T1 connects the winding N3 of isolating transformer T1,
The other end of the winding N3 of isolating transformer T1 connects the anode of diode D2, and the negative electrode of diode D2 connects the moon of diode Z1
The other end of pole, the other end of resistance R2 and electric capacity C4, the anode connection resistance R3 of diode Z1, the other end connection of resistance R3
The base stage of electric capacity C1 and audion Q2, the negative electrode and resistance R7 of the colelctor electrode connection diode Z2 of audion Q2, diode Z2's
The base stage of anode connecting triode Q1, the colelctor electrode connection resistance R8 of audion Q1 and photo-coupler U2 feet 1, photo-coupler U2 feet
The emitter stage of the emitter stage and audion Q2 of 2 connecting triode Q1 is simultaneously grounded, the other end connection electric capacity C2 of resistance R7, electric capacity
The foot 12 of C3, resistance R1 and chip U1, the other end of resistance R1 connect the negative electrode of diode D1, the anode connection electricity of diode D1
Source VCC.
2. a kind of arc welding gun switch isolation circuit according to claim 1, it is characterised in that the model of the chip U1
TL494, model PC817 of photo-coupler U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699854.8U CN206047316U (en) | 2016-06-29 | 2016-06-29 | A kind of arc welding gun switch isolation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699854.8U CN206047316U (en) | 2016-06-29 | 2016-06-29 | A kind of arc welding gun switch isolation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206047316U true CN206047316U (en) | 2017-03-29 |
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ID=58375892
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699854.8U Active CN206047316U (en) | 2016-06-29 | 2016-06-29 | A kind of arc welding gun switch isolation circuit |
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| Country | Link |
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| CN (1) | CN206047316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134600A (en) * | 2018-02-12 | 2018-06-08 | 中山市嘉科电子有限公司 | A kind of switching signal isolation circuit |
-
2016
- 2016-06-29 CN CN201620699854.8U patent/CN206047316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134600A (en) * | 2018-02-12 | 2018-06-08 | 中山市嘉科电子有限公司 | A kind of switching signal isolation circuit |
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