CN104439664B - Arc carry circuit is cut in CUT striking - Google Patents
Arc carry circuit is cut in CUT striking Download PDFInfo
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- CN104439664B CN104439664B CN201410796978.3A CN201410796978A CN104439664B CN 104439664 B CN104439664 B CN 104439664B CN 201410796978 A CN201410796978 A CN 201410796978A CN 104439664 B CN104439664 B CN 104439664B
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- terminal
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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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/006—Control circuits therefor
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- Plasma & Fusion (AREA)
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- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of CUT striking and cut arc carry circuit, in CUT.RC parallel circuit one end of switching circuit is connected with the first terminal, and the other end and the first catalyst are connected；The negative electrode of the first power diode and the first catalyst are connected, one end of anode and the 5th resistance is connected, and the other end of the 5th resistance and the 4th resistance one end are connected with the second terminal, the 4th terminal, the second catalyst after being connected respectively, the 4th resistance other end and the first catalyst are connected；The anode of the second power diode and the first catalyst are connected, and one end of negative electrode and the 6th resistance is connected, and the other end of the 6th resistance is connected with start-up circuit；Second catalyst is also connected with the 5th terminal and start-up circuit；Described filter circuit and the 3rd terminal, the 4th terminal, the 5th terminal, the 6th terminal are connected.Circuit structure of the present invention is simple, switching is reliable, capacity of resisting disturbance is strong.
Description
Technical field
The present invention relates to a kind of CUT striking and cut arc carry circuit, in CUT.
Background technology
The electric control system of CUT includes plasma electric source apparatus, arc initiation device, air-control device, numerical control system
The major parts such as system, cooling system.Arc initiation device produces pilot arc before cutting arc occurs, even if between nozzle and electrode
Gas occur ionization and produce plasma jet, this be cutting workpiece first step operation.Arc initiation device includes high-frequency and high-voltage
Arc ignition circuit or high pressure low frequency arc ignition circuit, arc voltage testing circuit, striking and cut arc carry circuit, surge voltage absorbs electricity
Road, connection cable etc..Arc voltage testing circuit is responsible for starting arc ignition circuit, starts cutting process.Striking and cutting needs between arc
Arc carry circuit Switching power circuit is cut in striking to be passed through.
Up to now, although the application of CUT is increasingly extensive, it is one of necessary circuits that arc carry circuit is cut in striking,
As at Patent No. 201020603574.5, entitled a kind of plasma cutting with front guide arc and cutting arc forced branch function
The Chinese patent of machine just relates to.But arc carry circuit is cut in the CUT striking of prior art, there is structure multiple
Miscellaneous, switch the shortcomings such as unreliable, interference is big.
Summary of the invention
The technical problem to be solved is to overcome deficiency of the prior art and provide that a kind of circuit structure is simple, switching
Reliably, arc carry circuit is cut in the CUT striking that capacity of resisting disturbance is strong.
The present invention solves above-mentioned technical problem and the technical scheme is that arc carry circuit is cut in a kind of CUT striking,
It is characterized in that: include switching circuit, filter circuit, start-up circuit, the first terminal, the second terminal, the 3rd terminal,
4th terminal, the 5th terminal, the 6th terminal；
Described switching circuit includes RC parallel circuit, the first catalyst, the second catalyst, the 4th resistance, the 5th electricity
Resistance, the 6th resistance, the first power diode, the second power diode；RC parallel circuit one end is connected with the first terminal,
The other end and the first catalyst are connected；The negative electrode of the first power diode and the first catalyst are connected, anode and the 5th resistance
One end be connected, and the other end of the 5th resistance and the 4th resistance one end be connected after respectively with the second terminal, the 4th terminal,
Second catalyst is connected, and the 4th resistance other end and the first catalyst are connected；The anode of the second power diode and first connects
Tentaculum is connected, and one end of negative electrode and the 6th resistance is connected, and the other end of the 6th resistance is connected with start-up circuit；Second contact
Device is also connected with the 5th terminal and start-up circuit；
Described filter circuit and the 3rd terminal, the 4th terminal, the 5th terminal, the 6th terminal are connected.
Filter circuit of the present invention include the 7th resistance, the 8th resistance, the 9th resistance, the second electric capacity, the 3rd electric capacity,
4th electric capacity；Described 7th resistance, one end of the second electric capacity are connected with the 3rd terminal, and the other end and the 4th terminal are connected；
8th resistance, one end of the 3rd electric capacity are connected with the 4th terminal, and the other end and the 5th terminal are connected；9th resistance, the 4th
One end of electric capacity is connected with the 5th terminal, and the other end and the 6th terminal are connected.
RC parallel circuit of the present invention includes the first resistance, the second resistance, the 3rd resistance, the first electric capacity, first
Resistance, the second resistance, the 3rd resistance, the first electric capacity are in parallel, and after parallel connection, a common port is connected with the first terminal, another
Common port and the first catalyst are connected.
The present invention compared with prior art, has the advantage that and effect: can realize safely and reliably by striking to cutting arc
Switching, and can absorb striking and cut the interference that arc brings, have simple in construction, interference rejection ability strong, safe and reliable,
The advantage such as with low cost, is suitable for big-and-middle-sized CUT application scenario.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention circuit theory diagrams.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings and by embodiment.
See Fig. 1, the embodiment of the present invention include switching circuit 1, start-up circuit 2, filter circuit 3, the first terminal J1,
Second terminal J2, the 3rd terminal J3, the 4th terminal J4, the 5th terminal J5, the 6th terminal J6.
Switching circuit 1 is for switching power supply route and carries out EMI suppression；Start-up circuit 2 is the circuit starting striking,
Belong to auxiliary circuit；Filter circuit 3 is EMI suppression circuit.
The first terminal J1 is used for connecting power cathode.Second terminal J2 is used for connecting positive source.3rd terminal J3 uses
In connecting power cathode.4th terminal J4 is used for connecting cutting workpiece.5th terminal J5 is used for connecting the earth.6th end
Sub-J6 is for connecting the casing of CUT.
Switching circuit 1 include RC parallel circuit, the first catalyst RL1, the second catalyst RL2, the 4th resistance R4,
5th resistance R5, the 6th resistance R6, the first power diode D1, the second power diode D2.
RC parallel circuit one end is connected with the first terminal J1, and the other end and the first catalyst RL1 are connected.RC parallel circuit
Including the first resistance R1, the second resistance R2, the 3rd resistance R3, the first electric capacity C1, the first resistance R1, the second resistance
R2, the 3rd resistance R3, the first electric capacity C1 are in parallel, and after parallel connection, a common port is connected with the first terminal, another common port and
A number terminal 1 of the first catalyst RL1 is connected with No. two terminals 2.
The negative electrode of the first power diode D1 and No. four terminals 4 of the first catalyst RL1 are connected, anode and the 5th resistance
One end of R5 is connected, and the other end of the 5th resistance R5 and the 4th resistance R4 one end be connected after respectively with the second terminal J2,
4th terminal J4, No. two terminals 2 of the second catalyst RL2 are connected, the 4th resistance R4 other end and the first catalyst
No. three terminals 3 are connected.The anode of the second power diode D2 and No. six terminals 6 of the first catalyst RL1 are connected, cloudy
Pole is connected with one end of the 6th resistance R6, and the other end of the 6th resistance R6 is connected with No. two terminal T2 of start-up circuit 2.
The coil CL2 of the coil CL1 and the second catalyst RL2 of the first catalyst RL1, for being connected with supervisory controller, connects
By supervisory controller control.No. six terminals 6 of the second catalyst RL2 are connected with a terminal T1 of start-up circuit 2.
No. five terminals 5 of the second catalyst RL2 control.No. four terminals 4 of the second catalyst RL2 are used for and striking boosting transformation
Device secondary windings one end connects, and is connected with the 5th terminal J5 simultaneously.No. three terminals 3 of the second catalyst RL2 are vacant.
No. five terminals 5 of the first catalyst RL1 are vacant.
Filter circuit 3 includes the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the second electric capacity C2, the 3rd electric capacity
C3, the 4th electric capacity C4.7th resistance R7, one end of the second electric capacity C2 are connected with the 3rd terminal J3, the other end and the 4th
Terminal J4 is connected.8th resistance R8, one end of the 3rd electric capacity C3 are connected with the 4th terminal J4, the other end and the 5th end
Sub-J5 is connected.9th resistance R9, one end of the 4th electric capacity C4 are connected with the 5th terminal J5, the other end and the 6th terminal
J6 is connected.Filter circuit 3 is EMI suppression circuit.
Operation principle of the present invention is as follows:
The first terminal J1 connects power cathode, and the second terminal J2 connects positive source, and the 3rd terminal J3 connects power supply and bears
Pole, the 4th terminal J4 connects cutting workpiece, and the 5th terminal J5 connects the earth, and the 6th terminal J6 connects plasma cutting
The casing of machine.In the first stage of striking, the first catalyst RL1 maintains normality, a terminal of the first catalyst RL1
No. two terminals 2 of 1 No. three terminals the 3, the first catalyst RL1 meeting the first catalyst RL1 connect the first catalyst RL1's
No. five terminals 5, the 4th resistance R4 with in parallel after the first resistance R1, the second resistance R2, the 3rd resistance R3 and first electricity
Hold C1 and constitute absorption circuit, absorb the surge voltage between the second terminal J2 and the first terminal J1.Second catalyst RL2
Departing from normality, a terminal 1 of the second catalyst RL2 connects No. four terminals 4, second catalyst of the second catalyst RL2
No. two terminals 2 of RL2 connect No. six terminals 6 of the second catalyst RL2, by the second terminal J2 voltage by start-up circuit 2
A number terminal T1 accesses start-up circuit 2, and flows out, by the second catalyst RL2 from No. two terminal T2 of start-up circuit 2
A terminal 1 be connected with striking booster transformer secondary windings with No. four terminals 4 of the second catalyst RL2, carry out electricity
Laminated adds, and produces high pressure, and the voltage being at this moment superimposed with high-voltage alternating is applied between nozzle of cutting torch and electrode, carries out
Striking.At the end of striking, the second catalyst RL2 returns to normal, and a terminal 1 of the second catalyst RL2 connects second
No. two terminals 2 of No. three terminals 3, the second catalyst RL2 of catalyst RL2 connect No. five terminals of the second catalyst RL2
5, depart from striking.First catalyst RL1 departs from normality, and a terminal 1 of the first catalyst RL1 connects the first catalyst
No. two terminals 2 of No. four terminals 4, the first catalyst RL1 of RL1 connect No. six terminals 6 of the first catalyst RL1, power supply
Positive pole is directly connected with cutting workpiece by the second terminal J2 and the 4th terminal J4.Second terminal J2 and the first terminal J1
Between be connected to the first resistance R1 after the 5th resistance R5, the first power diode D1, parallel connection, the second resistance R2, the 3rd
Resistance R3 and the first electric capacity C1, constitutes unidirectional absorption circuit.In whole striking with cut the arc stage, filter circuit 3 suppresses
3rd terminal J3, the 4th terminal J4, interference voltage between the 5th terminal J5, the 6th terminal J6, prevent interference electricity
Press to periphery conduction.
Above content described in this specification is only to present configuration example explanation.Technology belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in field
In generation, without departing from the structure of the present invention or surmount scope defined in the claims, the guarantor of the present invention all should be belonged to
Protect scope.
Claims (2)
1. arc carry circuit is cut in a CUT striking, it is characterised in that: include switching circuit,
Filter circuit, start-up circuit, the first terminal, the second terminal, the 3rd terminal, the 4th terminal, the 5th end
Son, the 6th terminal；
Described switching circuit includes RC parallel circuit, the first catalyst, the second catalyst, the 4th electricity
Resistance, the 5th resistance, the 6th resistance, the first power diode, the second power diode；RC parallel circuit
One end is connected with the first terminal, and the other end and the first catalyst are connected；The negative electrode of the first power diode with
First catalyst is connected, and one end of anode and the 5th resistance is connected, and the other end and the 4th of the 5th resistance
Resistance one end is connected with the second terminal, the 4th terminal, the second catalyst after being connected respectively, and the 4th resistance is another
One end is connected with the first catalyst；The anode of the second power diode and the first catalyst are connected, negative electrode with
One end of 6th resistance is connected, and the other end of the 6th resistance is connected with start-up circuit；Second catalyst also with
5th terminal is connected with start-up circuit；
Described filter circuit and the 3rd terminal, the 4th terminal, the 5th terminal, the 6th terminal are connected；
Described filter circuit includes the 7th resistance, the 8th resistance, the 9th resistance, the second electric capacity, the 3rd electricity
Appearance, the 4th electric capacity；Described 7th resistance, one end of the second electric capacity are connected with the 3rd terminal, the other end with
4th terminal is connected；8th resistance, one end of the 3rd electric capacity are connected with the 4th terminal, the other end and the 5th
Terminal is connected；9th resistance, one end of the 4th electric capacity are connected with the 5th terminal, the other end and the 6th terminal
It is connected.
Arc carry circuit is cut in CUT striking the most according to claim 1, it is characterised in that:
Described RC parallel circuit includes the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the first electricity
Resistance, the second resistance, the 3rd resistance, the first electric capacity parallel connection, after parallel connection, a common port is connected with the first terminal,
Another common port and the first catalyst are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796978.3A CN104439664B (en) | 2014-12-19 | 2014-12-19 | Arc carry circuit is cut in CUT striking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796978.3A CN104439664B (en) | 2014-12-19 | 2014-12-19 | Arc carry circuit is cut in CUT striking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104439664A CN104439664A (en) | 2015-03-25 |
| CN104439664B true CN104439664B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410796978.3A Active CN104439664B (en) | 2014-12-19 | 2014-12-19 | Arc carry circuit is cut in CUT striking |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112471A (en) * | 1994-05-27 | 1995-11-29 | 常州泛洋电气设备有限公司 | Combination split type power supply apparatus for plasma cutter |
| CN1150075A (en) * | 1995-11-13 | 1997-05-21 | 天津大学 | Plasma cutting power supply |
| JP2008105043A (en) * | 2006-10-24 | 2008-05-08 | Komatsu Sanki Kk | Plasma cutting machine and plasma power source system |
| CN201685022U (en) * | 2009-12-11 | 2010-12-29 | 上海熔易焊接机制造有限公司 | Inverter multi-purpose arc welding machine plasma cutting insulating device |
| CN201848643U (en) * | 2010-11-12 | 2011-06-01 | 深圳市华意隆实业发展有限公司 | Plasma cutting machine with forced transfer function between guiding arc and cutting arc |
| CN103350273A (en) * | 2013-06-18 | 2013-10-16 | 嘉兴力德数控科技有限公司 | Arc strike starting circuit of plasma cutting machine |
| CN103551716A (en) * | 2013-10-25 | 2014-02-05 | 华南理工大学 | Full-digital high-power plasma arc precise cutting system |
-
2014
- 2014-12-19 CN CN201410796978.3A patent/CN104439664B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112471A (en) * | 1994-05-27 | 1995-11-29 | 常州泛洋电气设备有限公司 | Combination split type power supply apparatus for plasma cutter |
| CN1150075A (en) * | 1995-11-13 | 1997-05-21 | 天津大学 | Plasma cutting power supply |
| JP2008105043A (en) * | 2006-10-24 | 2008-05-08 | Komatsu Sanki Kk | Plasma cutting machine and plasma power source system |
| CN201685022U (en) * | 2009-12-11 | 2010-12-29 | 上海熔易焊接机制造有限公司 | Inverter multi-purpose arc welding machine plasma cutting insulating device |
| CN201848643U (en) * | 2010-11-12 | 2011-06-01 | 深圳市华意隆实业发展有限公司 | Plasma cutting machine with forced transfer function between guiding arc and cutting arc |
| CN103350273A (en) * | 2013-06-18 | 2013-10-16 | 嘉兴力德数控科技有限公司 | Arc strike starting circuit of plasma cutting machine |
| CN103551716A (en) * | 2013-10-25 | 2014-02-05 | 华南理工大学 | Full-digital high-power plasma arc precise cutting system |
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| Publication number | Publication date |
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| CN104439664A (en) | 2015-03-25 |
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