CN206643489U - The high arcing initiation success rate burn-out-proof Jet control circuit of CUT - Google Patents
The high arcing initiation success rate burn-out-proof Jet control circuit of CUT Download PDFInfo
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- CN206643489U CN206643489U CN201720295084.5U CN201720295084U CN206643489U CN 206643489 U CN206643489 U CN 206643489U CN 201720295084 U CN201720295084 U CN 201720295084U CN 206643489 U CN206643489 U CN 206643489U
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Abstract
It the utility model is related to a kind of high arcing initiation success rate burn-out-proof Jet control circuit of CUT, including given value of current regulation circuit, current feedback signal circuit and high frequency control circuit, it is characterised in that：Also include the front guide arc current circuit A for adjusting circuit for given value of current and moment striking high current being provided, and the front guide arc current circuit B of the given regulation circuit initial current size of clamp current, given value of current regulation circuit are connected with front guide arc current circuit A and front guide arc current circuit B respectively.The utility model provides a kind of high arcing initiation success rate of CUT and burn-out-proof Jet control circuit.
Description
Technical field
The utility model is related to the arc ignition control circuit of electric welding machine, and in particular to one kind be mainly used in electric welding machine product its
The high arcing initiation success rate burn-out-proof Jet control circuit of middle CUT.
Background technology
Cutting current is more than 80A CUT, typically using the contactless starting the arc, i.e., first in the electrode of cutting gun
The most 10s i.e. small arc of front guide arc is produced between nozzle, then the cutting arc that ignited between cutting workpiece, front guide arc is disconnected afterwards, is entered
Enter normal cut state.In actual use, leading arc current is too small, the unstable normal cut state that can not become a full member of electric arc；Front guide arc
Electric current is excessive and easy burning and cutting burning torch nozzle.Existing CUT striking is typically using compromise processing mode, i.e. front guide arc
Electric current be steady state value and 30A and its more than, striking is relatively stable, but long-term more than 30A front guide arcs electricity
Stream easily causes nozzle scaling loss to influence cutting gun service life relative to general cutting gun.
The optimal case of leading arc current is to start instantaneous high current, is advantageous to improve arcing initiation success rate, low electricity after startup
Stream continues one section, is advantageous to stable and prevents nozzle from burning, and the arc stricking techniques of existing CUT have to be hoisted.
The content of the invention
A kind of the utility model deficiency existing for existing CUT arc ignition circuit, there is provided CUT
High arcing initiation success rate and burn-out-proof Jet control circuit.
The technical solution of the utility model is as follows:
A kind of high arcing initiation success rate burn-out-proof Jet control circuit of CUT, including given value of current regulation circuit,
Current feedback signal circuit and high frequency control circuit, it is characterised in that：Also include providing moment for given value of current regulation circuit and draw
The front guide arc current circuit A of arc high current, and the leading arc current electricity of the given regulation circuit initial current size of clamp current
Road B, given value of current regulation circuit are connected with front guide arc current circuit A and front guide arc current circuit B respectively.
Above-mentioned front guide arc current circuit A is connected with current feedback signal circuit and high frequency control circuit respectively.
Above-mentioned front guide arc current circuit B adjusts circuit with given value of current by swept resistance and is connected；Front guide arc current circuit B
Including commutation diode, triode, voltage-regulator diode, resistance, electrochemical capacitor and arcing success output end；Commutation diode one end
It is connected with adjusting the second swept resistance in circuit positioned at given value of current, other end is connected with triode；Voltage-regulator diode one
End be connected with triode, and other end is connected with resistance, resistance other end and meanwhile with the successful output end of electrochemical capacitor and arcing
Connection.
Above-mentioned front guide arc current circuit A includes the current detecting Hall whether detection CUT starts, Yi Jiji
Into amplifier, commutation diode, some resistance, some triodes, FET and electric capacity；Current detecting Hall indirectly with integrated fortune
Put electrical connection and control its output end, between the base stage of the rectified diode of integrated transporting discharging output end, the 9th resistance and triode
Connect electrical connection；External power source is connected with secondary by the 11st resistance, the 12nd resistance with ground wire, the 11st resistance and the 12nd
The colelctor electrode with triode, voltage-regulator diode are directly connected to respectively, while through resistance and the 20th simultaneously for connection end among resistance
The base stage electrical connection of four triodes；The emitter stage of 24th triode exports high current through resistance and adjusts electricity to given value of current
Road, meanwhile, it is parallel with the voltage-regulator diode and electric capacity of clamp output voltage in the emitter stage of the 24th triode.
Above-mentioned given value of current regulation circuit includes given value of current regulation initial end, given value of current signal output part, Yi Jiwei
The control circuit between initial end and given value of current signal output part is adjusted in given value of current.
The beneficial effects of the utility model are：Before CUT igniting has electric current, there is provided moment striking high current
Front guide arc current circuit A, front guide arc current circuit A has a big given electric current, and the electric current that ignition point has 50A is exported, made
Ignition success rate improves, and this high current only maintains 50ms, and so short time is that the nozzle of cutting gun is not almost influenceed, 50ms
The front guide arc current circuit B for clamping down on given value of current regulation circuit initial current size afterwards starts, and maintains 15A leading arc current,
Whole front guide arc ignition process, ignition success rate is high, while front guide arc is stable, the cutting gun nozzle of CUT almost without
Scaling loss.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Wherein：1st, front guide arc current circuit A；11st, current detecting Hall；2nd, current feedback signal circuit；3rd, high frequency controls
Circuit；4th, given value of current regulation circuit；41st, given value of current regulation initial end；42nd, given value of current signal output part；5th, front guide arc
Current circuit B；51st, arcing success output end.
Embodiment
To be illustrated more clearly that content of the present utility model, make further to retouch with reference to the accompanying drawings and detailed description
State.
As shown in figure 1, a kind of high arcing initiation success rate burn-out-proof Jet control circuit of CUT, including given value of current
Circuit 4, current feedback signal circuit 2 and high frequency control circuit 3 are adjusted, in addition to adjusts circuit 4 for given value of current and moment is provided
The front guide arc current circuit A1 of striking high current, and the front guide arc electricity of the given regulation initial current size of circuit 4 of clamp current
Current circuit B5, given value of current regulation circuit 4 are connected with front guide arc current circuit A1 and front guide arc current circuit B5 respectively.
Front guide arc current circuit A1 is connected with current feedback signal circuit 2 and high frequency control circuit 3 respectively.
Front guide arc current circuit B5 adjusts circuit 4 with given value of current by swept resistance RT2 and is connected；Front guide arc current circuit
B5 includes commutation diode D8, triode Q3, voltage-regulator diode D9, resistance R24, electrochemical capacitor C11 and arcing success output end
51；Commutation diode D8 one end with positioned at given value of current regulation circuit 4 in the second swept resistance RT2 be connected, other end and
Triode Q3 connections；Voltage-regulator diode D9 one end is connected with triode Q3, and other end is connected with resistance R24, and resistance R24 is in addition
One end is connected with electrochemical capacitor C11 and arcing success output end 51 simultaneously.This front guide arc current circuit B maintains leading arc current
It constant value, will not change because of the change that given value of current is adjusted, be turned on before formal cutting by triode Q3, and it is logical
Over commutation diode D8 by set-point clamper in about 0.5V, when formal cutting starts, after big arc is established, resistance R24 and electrolysis electricity
The high potential for holding C11 contact releases, and triode Q3 cut-offs, cutting current reverts to the value of current regulation setting, solves leading
The problem of arc constant magnitude.
Front guide arc current circuit A1 includes the current detecting Hall 11 whether detection CUT starts, and integrated
Amplifier U1C, commutation diode D2, resistance R9, R10, R11, R12 and R23, triode Q1 and Q24, FET Q2 and electric capacity
C9；Current detecting Hall 11 is electrically connected with integrated transporting discharging U1C and controls its output end indirectly, integrated transporting discharging U1C output ends warp
Commutation diode D2, the 9th resistance R9 and triode Q1 base stage are electrically connected indirectly；External power source is with secondary by the 11st electricity
Resistance R11, the 12nd resistance R12 are connected with ground wire, and the 11st resistance R11 and the 12nd resistance R12 centres connection end are distinguished simultaneously
Colelctor electrode, voltage-regulator diode D3 with triode Q1 are directly connected to, while the base through resistance R21 and the 24th triode Q24
Pole is electrically connected；24th triode Q24 emitter stage exports high current through resistance R23 and adjusts circuit 4 to given value of current, together
When, it is parallel with the voltage-regulator diode D7 and electric capacity C9 of clamp output voltage in the 24th triode Q24 emitter stage.Front guide arc
Current circuit A1 passes through integrated transporting discharging U1C, commutation diode D2, resistance R9, resistance R10, triode Q1, FET Q2, the
The circuit of the compositions such as 24 triode Q24, electric capacity C9, resistance R23, before having electric current generation it is another provide it is one big to
It is fixed：When not having electric current, the detected value of current detecting Hall is 0, and integrated transporting discharging U1C the 8th pin output -15V, triode Q1 is cut
Only, the voltage that resistance R11 and resistance R12 partial pressures obtain is added to the 24th triode Q24 base stages, the 24th triode Q24
Conducting, electric capacity C9 keep maximum 5.1V voltages, and this voltage is used as a given value of current by resistance R23, and this is given more than three
Pole pipe Q3 and set-point during commutation diode D8 clampers, so front guide arc has high current generation at the beginning, it can stablize before establishing
Lead arc；After current detecting Hall detects electric current, integrated transporting discharging U1C 8 pin become+15V by -15V upsets, and triode Q1 is led
Logical, triode Q24 cut-offs, the 5.1V on electric capacity C9 is discharged by resistance R23, ineffective about in 50mS, makes front guide arc only
The leading arc current set according to triode Q3 and the output of the set-point of commutation diode D8 clampers.
Given value of current regulation circuit 4 includes given value of current regulation initial end 41, given value of current signal output part 42, Yi Jiwei
The control circuit between initial end 41 and given value of current signal output part 42 is adjusted in given value of current.
Above-described embodiment is not construed as the limitation to scope of protection of the utility model, and those skilled in the art are based on
The improvement that technical solutions of the utility model or means are made, the protection domain of the utility model claims all should be fallen into.
Claims (5)
1. a kind of high arcing initiation success rate burn-out-proof Jet control circuit of CUT, including given value of current regulation circuit (4),
Current feedback signal circuit (2) and high frequency control circuit (3), it is characterised in that：Also include carrying for given value of current regulation circuit (4)
For the front guide arc current circuit A (1) of moment striking high current, and given regulation circuit (4) the initial current size of clamp current
Front guide arc current circuit B (5), given value of current regulation circuit (4) respectively with front guide arc current circuit A (1) and leading arc current
Circuit B (5) connections.
2. the high arcing initiation success rate burn-out-proof Jet control circuit of CUT according to claim 1, its feature exist
In：The front guide arc current circuit A (1) is connected with current feedback signal circuit (2) and high frequency control circuit (3) respectively.
3. the high arcing initiation success rate burn-out-proof Jet control circuit of CUT according to claim 1, its feature exist
In：The front guide arc current circuit B (5) adjusts circuit (4) with given value of current by swept resistance (RT2) and is connected；Front guide arc electricity
Current circuit B (5) includes commutation diode (D8), triode (Q3), voltage-regulator diode (D9), resistance (R24), electrochemical capacitor
(C11) and arcing success output end (51)；Commutation diode (D8) one end and second in given value of current regulation circuit (4)
Swept resistance (RT2) is connected, and other end is connected with triode (Q3)；Voltage-regulator diode (D9) one end connects with triode (Q3)
Connect, other end is connected with resistance (R24), and resistance (R24) other end successfully exports with electrochemical capacitor (C11) and arcing simultaneously
Hold (51) connection.
4. the high arcing initiation success rate burn-out-proof Jet control circuit of CUT according to claim 1, its feature exist
In：The front guide arc current circuit A (1) includes the current detecting Hall (11) whether detection CUT starts, and
Integrated transporting discharging (U1C), commutation diode (D2), some resistance (R9, R10, R11, R12, R23), some triodes (Q1, Q24),
FET (Q2) and electric capacity (C9)；Current detecting Hall (11) is electrically connected with integrated transporting discharging (U1C) and controls its defeated indirectly
Go out end, the rectified diode of integrated transporting discharging (U1C) output end (D2), the base stage Indirect Electro of the 9th resistance (R9) and triode (Q1)
Gas connects；External power source is connected with secondary by the 11st resistance (R11), the 12nd resistance (R12) with ground wire, the 11st resistance
(R11) and among the 12nd resistance (R12) colelctor electrode with triode (Q1), voltage-regulator diode (D3) are straight respectively simultaneously for connection end
Connect in succession, while the base stage through resistance (R21) and the 24th triode (Q24) is electrically connected；24th triode (Q24)
Emitter stage through resistance (R23) output high current to given value of current regulation circuit (4), meanwhile, in the 24th triode (Q24)
Emitter stage be parallel with the voltage-regulator diode (D7) and electric capacity (C9) of clamp output voltage.
5. the high arcing initiation success rate burn-out-proof Jet control circuit of CUT according to claim 1, its feature exist
In：The given value of current regulation circuit (4) includes given value of current regulation initial end (41), given value of current signal output part (42),
And the control circuit between given value of current regulation initial end (41) and given value of current signal output part (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295084.5U CN206643489U (en) | 2017-03-23 | 2017-03-23 | The high arcing initiation success rate burn-out-proof Jet control circuit of CUT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295084.5U CN206643489U (en) | 2017-03-23 | 2017-03-23 | The high arcing initiation success rate burn-out-proof Jet control circuit of CUT |
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| Publication Number | Publication Date |
|---|---|
| CN206643489U true CN206643489U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720295084.5U Expired - Fee Related CN206643489U (en) | 2017-03-23 | 2017-03-23 | The high arcing initiation success rate burn-out-proof Jet control circuit of CUT |
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| Country | Link |
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| CN (1) | CN206643489U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262119A (en) * | 2018-10-23 | 2019-01-25 | 成都埃森普特科技股份有限公司 | A kind of plasma cutting machine pilot arc current control circuit and method |
| CN109807506A (en) * | 2018-12-30 | 2019-05-28 | 上海广为焊接设备有限公司 | For controlling the circuit of cutting machine cutting arc and pilot arc conversion |
-
2017
- 2017-03-23 CN CN201720295084.5U patent/CN206643489U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262119A (en) * | 2018-10-23 | 2019-01-25 | 成都埃森普特科技股份有限公司 | A kind of plasma cutting machine pilot arc current control circuit and method |
| CN109262119B (en) * | 2018-10-23 | 2024-04-19 | 山西万流金属制品有限公司 | Guide arc current control circuit and method for plasma cutting machine |
| CN109807506A (en) * | 2018-12-30 | 2019-05-28 | 上海广为焊接设备有限公司 | For controlling the circuit of cutting machine cutting arc and pilot arc conversion |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171117 Termination date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |