CN205888328U - Electric welding and plasma cutting machine's rifle ON -OFF control circuit - Google Patents
Electric welding and plasma cutting machine's rifle ON -OFF control circuit Download PDFInfo
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- CN205888328U CN205888328U CN201620784389.8U CN201620784389U CN205888328U CN 205888328 U CN205888328 U CN 205888328U CN 201620784389 U CN201620784389 U CN 201620784389U CN 205888328 U CN205888328 U CN 205888328U
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Abstract
The utility model discloses an electric welding and plasma cutting machine's rifle ON -OFF control circuit, including rifle switch input plug J3, rifle switch input plug J3's 1 foot and 2 feet are connected with electric capacity C4S jointly, common mode inductance T1S's input, rifle switch input plug J3's 3 feet and 4 feet are connected with electric capacity C5S jointly, common mode inductance T1S's input, electric capacity C4S and electric capacity C5S's other end ground connection, common mode inductance T1S's the direct parallel connection of output has electric capacity C6S and electric capacity C7S, common mode inductance T1S's output still is connected with differential mode choke L1S's one end, differential mode choke L1S's the other end is connected with diode V5S, diode V6S, resistance R3S and electric capacity C3S respectively, and opto -coupler N1S's output is connected with electric capacity C1S and resistance R3. The utility model discloses two power isolation use high withstand voltage opto -coupler as reaching and added common mode, differential mode suppression inductance, multiple electric capacity absorption etc. Core, first time for this control circuit job stabilization is reliable.
Description
Technical field
This utility model is related to a kind of automation control circuit and in particular to the rifle of a kind of electric welding machine and CUT
ON-OFF control circuit.
Background technology
In tig, mig weldering and CUT it is necessary to rely on weldering (cutting) rifle to carry out work, wherein, the opening of work process
Begin and terminate it is necessary to be realized by rifle controlling switch, come high frequency in self-brazing (rifle), high pressure and other strong jammings, often lead to
Cross bat-handle switch control line and pass to machine inner loop, when serious, cause machine operation failure, or even internal control of breaking
Element.
Utility model content
Utility model purpose: the purpose of this utility model is to solve deficiency of the prior art, providing one kind with height
Pressure optocoupler is core, the isolation of first dual power supply, and adds common mode, differential mode suppression inductance, multiple capacitive absorption etc. so that this control
Circuit processed electric welding machine stable and reliable in work and the rifle ON-OFF control circuit of CUT.
Technical scheme: the rifle ON-OFF control circuit of a kind of electric welding machine described in the utility model and CUT, bag
Include rifle switch input plug j3, described rifle switchs 1 foot of input plug j3 and 2 feet are connected with electric capacity c4s, common mode inductance jointly
The input of t1s, described rifle switchs 3 feet of input plug j3 and 4 feet are connected with electric capacity c5s, the input of common mode inductance t1s jointly
End, the other end ground connection of described electric capacity c4s and electric capacity c5s, described the output terminal direct paralleled of common mode inductance t1s is connected with electric capacity
The outfan of c6s and electric capacity c7s, described common mode inductance t1s is also associated with one end of differential mode inductance l1s, described differential mode inductance l1s
The other end be connected to diode v5s, diode v6s, resistance r3s and electric capacity c3s, described electric capacity c3s is additionally coupled to
The input of optocoupler n1s, the outfan of described optocoupler n1s is connected with electric capacity c1s and resistance r3.
Further, this circuit is arranged between rifle switch input terminal and internal pcb plate.
Further, the other end of described differential mode inductance l1s is connected with the anode of diode v6s, simultaneously with diode v5s
Negative electrode connect.
Further, described diode v5s, diode v6s divide for limiting the voltage signal peak value reaching optocoupler input
Bu Chaoguo not+13v and -1v.
Further, described optocoupler n1s adopts high withstand voltage optocoupler.
Beneficial effect: this utility model with high withstand voltage optocoupler as core, isolate by first dual power supply, and adds common mode, differential mode
Suppression inductance, multiple capacitive absorption etc. are so that this control circuit is stable and reliable in work.
Brief description
Fig. 1 is circuit theory schematic diagram of the present utility model.
Specific embodiment
A kind of electric welding machine as shown in Figure 1 and the rifle ON-OFF control circuit of CUT, this circuit is arranged at rifle and opens
Close between input and internal pcb plate.This circuit includes rifle switch input plug j3, and described rifle switchs 1 foot of input plug j3
Jointly it is connected with the input of electric capacity c4s, common mode inductance t1s with 2 feet, 3 feet of described rifle switch input plug j3 and 4 feet are common
It is connected with electric capacity c5s, the input of common mode inductance t1s, the other end ground connection of described electric capacity c4s and electric capacity c5s, described common mode electricity
The output terminal direct paralleled of sense t1s is connected with electric capacity c6s and electric capacity c7s, and it is poor that the outfan of described common mode inductance t1s is also associated with
One end of mould inductance l1s, the other end of described differential mode inductance l1s is connected to diode v5s, diode v6s, resistance r3s
And electric capacity c3s, described electric capacity c3s is additionally coupled to the input of optocoupler n1s, and the outfan of described optocoupler n1s is connected with electric capacity
C1s and resistance r3.
The other end of described differential mode inductance l1s is connected with the anode of diode v6s, connects with the negative electrode of diode v5s simultaneously
Connect.
The operation principle of this circuit is as follows:
Rifle switch input is input to the internal pcb plate of machine by " 1,2 " foot of j3 and " 3,4 " foot, first passes through electric capacity
C4s, electric capacity c5s connect the earth (shell), by common mode inductance t1s, to electric capacity c6s, c7s, to differential mode inductance l1s to optocoupler n1s
Input, optocoupler secondary output letter goes corresponding control circuit, realizes control function.Wherein, diode v5s, v6s is used for limiting
The voltage signal peak value that system reaches optocoupler input is less than+13v and about -1v respectively, and c3s absorbs arrival optocoupler input again
Peak voltage；Meanwhile, isolation optocoupler be rifle switch press (work) be closing (primary short does not work), only in rifle
Switch adopts conducting so that the capacity of resisting disturbance of optocoupler itself reaches optimum state when unclamping, it is existing that optocoupler is not susceptible to punch through damage
As.Thus, improve control circuit reliability.
The above, be only preferred embodiment of the present utility model, not this utility model is made any formal
Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above
Hold and make a little Equivalent embodiments changing or be modified to equivalent variations, as long as without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still
Belong in the range of technical solutions of the utility model.
Claims (5)
1. a kind of electric welding machine and CUT rifle ON-OFF control circuit it is characterised in that: include rifle switch input plug
J3, described rifle switchs 1 foot of input plug j3 and 2 feet are connected with electric capacity c4s, the input of common mode inductance t1s, described rifle jointly
3 feet of switch input plug j3 and 4 feet are connected with electric capacity c5s, the input of common mode inductance t1s, described electric capacity c4s and electricity jointly
Hold the other end ground connection of c5s, the output terminal direct paralleled of described common mode inductance t1s is connected with electric capacity c6s and electric capacity c7s, described
The outfan of common mode inductance t1s is also associated with one end of differential mode inductance l1s, and the other end of described differential mode inductance l1s connects respectively
There are diode v5s, diode v6s, resistance r3s and electric capacity c3s, described electric capacity c3s is additionally coupled to the input of optocoupler n1s,
The outfan of described optocoupler n1s is connected with electric capacity c1s and resistance r3.
2. a kind of electric welding machine according to claim 1 and CUT rifle ON-OFF control circuit it is characterised in that:
This circuit is arranged between rifle switch input terminal and internal pcb plate.
3. a kind of electric welding machine according to claim 1 and CUT rifle ON-OFF control circuit it is characterised in that:
The other end of described differential mode inductance l1s is connected with the anode of diode v6s, is connected with the negative electrode of diode v5s simultaneously.
4. a kind of electric welding machine according to claim 1 and CUT rifle ON-OFF control circuit it is characterised in that:
Described diode v5s, diode v6s are used for limiting the voltage signal peak value reaching optocoupler input respectively less than+13v and -1v.
5. a kind of electric welding machine according to claim 1 and CUT rifle ON-OFF control circuit it is characterised in that:
Described optocoupler n1s adopts high withstand voltage optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620784389.8U CN205888328U (en) | 2016-07-25 | 2016-07-25 | Electric welding and plasma cutting machine's rifle ON -OFF control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620784389.8U CN205888328U (en) | 2016-07-25 | 2016-07-25 | Electric welding and plasma cutting machine's rifle ON -OFF control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205888328U true CN205888328U (en) | 2017-01-18 |
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ID=57784915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620784389.8U Active CN205888328U (en) | 2016-07-25 | 2016-07-25 | Electric welding and plasma cutting machine's rifle ON -OFF control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205888328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296617A (en) * | 2018-03-07 | 2018-07-20 | 上海威特力焊接设备制造股份有限公司 | Regulating current device and method for plasma cutting machine |
-
2016
- 2016-07-25 CN CN201620784389.8U patent/CN205888328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296617A (en) * | 2018-03-07 | 2018-07-20 | 上海威特力焊接设备制造股份有限公司 | Regulating current device and method for plasma cutting machine |
| CN108296617B (en) * | 2018-03-07 | 2023-06-20 | 上海威特力焊接设备制造股份有限公司 | Current regulating device and method for plasma cutting machine |
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| GR01 | Patent grant |