CN201824043U - Arc initiating device of inverter TIG (Tungsten Inert Gas) welding machine - Google Patents
Arc initiating device of inverter TIG (Tungsten Inert Gas) welding machine Download PDFInfo
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- CN201824043U CN201824043U CN2010205604077U CN201020560407U CN201824043U CN 201824043 U CN201824043 U CN 201824043U CN 2010205604077 U CN2010205604077 U CN 2010205604077U CN 201020560407 U CN201020560407 U CN 201020560407U CN 201824043 U CN201824043 U CN 201824043U
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- arc
- welding machine
- tig
- inversion
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Abstract
The utility model discloses an arc initiating device of an inverter TIG (Tungsten Inert Gas) welding machine. The initiating device comprises an arc ignition circuit comprising a discharge electrode, a high-tension transformer, a coupling transformer and a coupling capacitor. A high-frequency pulse in the TIG welding machine is adopted for the arc ignition circuit; a high-frequency transformer boosts as an arc ignition impulse; and the non-contact type high-voltage impulse arc ignition mode is adopted for the arc ignition. The arc initiating device is characterized in that the arc initiating device of the inverter TIG welding machine further comprises an arc static circuit which leads the arc initiating device to immediately initiate the arc when the arc extinguishes. The arc initiating device has a simple structure, is convenient to use and has excellent dynamical property and control performance.
Description
Technical field
The utility model relates to a kind of welding machine, especially a kind of inversion tig arc welding machine arc initiation device.
Background technology
The TIG weldering is a kind of very important welding method, and it is highly stable that it has welding process, and weld seam is attractive in appearance, characteristics such as welding quality height.Traditional tig arc welding machine has mainly adopted the mode of the noncontact striking electric arc that ignites, its mode is to utilize high-frequency and high-voltage or high-voltage pulse, puncture the air gap between tungsten electrode and the workpiece, form spark discharge, the electric current that utilizes tig arc welding machine to provide then, make the spark discharge of arc space be expanded into arc discharge very soon, with the electric arc that ignites.Although striking is effective, human body there is harm, and the environment around disturbing.And the mode of the traditional contacting ignition arc electric arc that ignites, bigger short circuit current can cause the scaling loss of the burn of thin workpiece and tungsten electrode and cause defective such as weld seam tungsten inclusion.In addition, when actual welding (particularly little electric current book plate welding), electric arc may extinguish, and when arc extinction, the electric arc that need ignite once more is also cumbersome.
Summary of the invention
The utility model purpose is: provide a kind of simple in structure, easy to use have good dynamic characteristic and control performance, an inversion tig arc welding machine arc initiation device with striking and stabilising arc function.
The technical solution of the utility model is: a kind of inversion tig arc welding machine arc initiation device, comprise arc ignition circuit, described arc ignition circuit comprises discharge electrode, high-tension transformer, coupling transformer and coupling capacitor, described arc ignition circuit adopts the inner high-frequency impulse of inversion tig arc welding machine, boost by described high frequency transformer, as the striking pulse, adopt the high-voltage pulse starting the arc mode starting the arc of non-contact type, it is characterized in that described inversion tig arc welding machine arc initiation device also comprises can make the arc initiation device arc static circuit of striking once more immediately when arc extinction.
Further, described arc static circuit comprises resistance R 1, resistance R 2, resistance R 3, diode D2, Zener diode D1, triode BG1 and relay J 1, when arc extinction, inversion tig arc welding machine output voltage raises, and makes triode BG1 turn-on relay J1 adhesive through resistance R 1, Zener diode D1, resistance R 2, resistance R 3, thereby the switch that triggers arc ignition circuit makes arc ignition circuit task again; After electric arc was lighted, inversion tig arc welding machine output voltage descended, and triode BG1 ends, and relay J 1 discharges, thereby the control arc ignition circuit quits work.
Further, the height of described arcing voltage can be realized by the size of adjusting the gap between the described discharge electrode.
The utility model has the advantages that: simple in structure, easy to use have good dynamic characteristic and control performance, an inversion tig arc welding machine arc initiation device with striking and stabilising arc function.Utilize the inner high-frequency impulse of inverter type welder, boost by high frequency transformer, as the striking pulse, circuit working is reliable and stable, does not need to establish in addition circuit such as the striking higher-order of oscillation, promotion.When actual welding (particularly little electric current book plate welding), electric arc may extinguish, and this circuit is worked as electric arc automatic disconnection arc ignition circuit just often, when electric arc moment extinguished, arc ignition circuit was worked immediately, the moment striking, make the arc recovery operate as normal, thereby reach the stabilising arc effect.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of the utility model inversion tig arc welding machine arc initiation device.
Fig. 2 is the circuit diagram of the utility model inversion tig arc welding machine arc initiation device.
The specific embodiment
As shown in Figure 1, the inverter type welder output circuit links to each other with stabilising arc control circuit and high frequency booster circuit, utilize the high-frequency impulse of inverter type welder self, be coupled to welding terminal as the high-frequency arc strike pulse by high-frequency coupler again after boosting to about 20000V by high frequency transformer, the stabilising arc control circuit is taken a sample from welding terminal, at current interruption moment connection arc ignition circuit, makes the electric arc operate as normal, the normal back automatic disconnection of electric arc arc ignition circuit, thus reach arc stability.
As shown in Figure 2, draw from the inverter type welder output, divide two-way: the one tunnel is that switch J1-1, switch J1-2, capacitor C 1, inductance T2 and diode D3, discharge electrode Jz, capacitor C 2, inductance T3 form arc ignition circuit.To be coupled to high frequency transformer through capacitor C 1 elementary for high-frequency impulse when switch J1-1, J1-2 are closed, is rectified into unidirectional pulsation high-frequency and high-voltage through the inductance T2 D3 that boosts, and is coupled to welding machine output through capacitor C 2, inductance T3 again.Discharge electrode Jz is used for regulating arcing distance.Another road is resistance R 1, resistance R 2, resistance R 3, resistance R 4, Zener diode D1, diode D2, triode BG1, relay J 1 composition, and arc static circuit is formed in control J1-1, JI-2 contact.When the welding machine arc extinction, the welding machine output voltage raises, and makes BG1 turn-on relay J1 adhesive through resistance R 1, diode D1, resistance R 2, resistance R 3, contact J1-1, JI-2 closure, and arc ignition circuit is task again; After electric arc was lighted, the welding machine output voltage descended, and BG1 ends, and relay J 1 discharges, and contact J1-1, JI-2 disconnect, and arc ignition circuit quits work.R4 is the current-limiting resistance of J1.
Above embodiment only is the utility model a kind of embodiment wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (3)
1. inversion tig arc welding machine arc initiation device, comprise arc ignition circuit, described arc ignition circuit comprises discharge electrode, high-tension transformer, coupling transformer and coupling capacitor, described arc ignition circuit adopts the inner high-frequency impulse of inversion tig arc welding machine, boost by described high frequency transformer,, adopt the high-voltage pulse starting the arc mode starting the arc of non-contact type as the striking pulse, it is characterized in that described inversion tig arc welding machine arc initiation device also comprises can make the arc initiation device arc static circuit of striking once more immediately when arc extinction.
2. inversion tig arc welding machine arc initiation device according to claim 1, it is characterized in that, described arc static circuit comprises resistance R 1, resistance R 2, resistance R 3, diode D2, Zener diode D1, triode BG1 and relay J 1, when arc extinction, inversion tig arc welding machine output voltage raises, make triode BG1 turn-on relay J1 adhesive through resistance R 1, Zener diode D1, resistance R 2, resistance R 3, thereby the switch that triggers arc ignition circuit makes arc ignition circuit task again; After electric arc was lighted, inversion tig arc welding machine output voltage descended, and triode BG1 ends, and relay J 1 discharges, thereby the control arc ignition circuit quits work.
3. inversion tig arc welding machine arc initiation device according to claim 1 is characterized in that the height of described arcing voltage can be realized by the size of adjusting the gap between the described discharge electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205604077U CN201824043U (en) | 2010-10-14 | 2010-10-14 | Arc initiating device of inverter TIG (Tungsten Inert Gas) welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205604077U CN201824043U (en) | 2010-10-14 | 2010-10-14 | Arc initiating device of inverter TIG (Tungsten Inert Gas) welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201824043U true CN201824043U (en) | 2011-05-11 |
Family
ID=43962601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205604077U Expired - Fee Related CN201824043U (en) | 2010-10-14 | 2010-10-14 | Arc initiating device of inverter TIG (Tungsten Inert Gas) welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201824043U (en) |
-
2010
- 2010-10-14 CN CN2010205604077U patent/CN201824043U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |