CN2144553Y - Controller for pulse tungsten argon arc welding machine - Google Patents
Controller for pulse tungsten argon arc welding machine Download PDFInfo
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- CN2144553Y CN2144553Y CN 92220365 CN92220365U CN2144553Y CN 2144553 Y CN2144553 Y CN 2144553Y CN 92220365 CN92220365 CN 92220365 CN 92220365 U CN92220365 U CN 92220365U CN 2144553 Y CN2144553 Y CN 2144553Y
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Abstract
The utility model belongs to a welding apparatus, comprising a sequence circuit (comprises a welding control switch, a trigger device, an air supply control circuit, an arc initiation control circuit, an arc maintenance control circuit, a spot welding time control circuit and an arc voltage sample circuit), an electric current signal assigned circuit (comprises a signal source and an electric current signal conditioning circuit) and an arc initiation circuit (comprises high frequency arc initiation device and an arc maintenance circuit), wherein, the sequence circuit adopts an integrated time-base circuit; only an operational amplifier is used to form an integrating device, and simultaneously the linear increment of the welding current and the linear attenuation of the arc extinguishing current are achieved; a low current arc initiation is adopted, and a flat characteristic high voltage transformer is connected in parallel with a capacitor to form a high-frequency oscillator. The utility model can meet high quality welding requirements.
Description
The utility model belongs to welding equipment.
The argon tungsten-arc welding machine controller that present domestic electric welder factory produces generally adopts transistor circuit to realize, it is big to exist parameter discrete, reappearance is bad, the circuit complexity, add and adopt RC to charge and discharge the decay with the blow-out electric current of increasing progressively that circuit is realized welding current, make its poor linearity, striking is impacted big and debugging is keeped in repair all inconvenient.In recent years, for solving above-mentioned subproblem, someone has applied for patent CN87205156U, increase progressively linearity problems with the blow-out current attenuation though this patent has solved welding current, adopted elder generation to handle, constitute the scheme that add circuit is realized by amplifier again by amplifier, circuit is too complicated, too loaded down with trivial details, the unit of use, device amount are big, give and produce debugging, maintenance, use and bring a lot of troubles.
The purpose of this utility model is to provide a kind of circuit simple, excellent performance, can adaptive various Arc Welding Power, have multi-functional, multiduty pulsed tungsten argon arc weld(ing) machine controller.
The utility model is achieved by the following scheme: the sequence circuit that it is made up of welding gauge tap, trigger, the control circuit of supplying gas, arc ignition control circuit, spot welding time control circuit, arc voltage sample circuit and reach the three parts of being made up of high-frequency arc strike device, keep-alive circuit such as arc ignition circuit by the circuit signal given circuit that signal source, current signal regulating circuit are formed and constitute.The input of trigger and signal source links to each other with the welding gauge tap, the output of trigger links to each other with the input of the control circuit of supplying gas, arc ignition control circuit, arc maintenance control circuit, signal source, the output of arc voltage sample circuit links to each other with the input of arc ignition control circuit and signal source respectively, the output one tunnel of signal source links to each other with the input of spot welding time control circuit, and its output links to each other with the input of trigger; Another road links to each other with the input of current signal regulating circuit, its output is the M end, the input of high-frequency arc strike device links to each other with the output of arc ignition control circuit, its output is the K end, the input of keep-alive circuit links to each other with the output of arc maintenance control circuit, its output links to each other with the input of arc voltage sample circuit, and this output is the I end.
Below in conjunction with accompanying drawing the utility model is described in detail
The circuit block diagram of Fig. 1 pulsed tungsten argon arc weld(ing) machine controller
The electrical schematic diagram of Fig. 2 sequence circuit
The electrical schematic diagram of Fig. 3 current signal given circuit
The electrical schematic diagram of Fig. 4 arc ignition circuit
Fig. 5 the utility model and ZX5 series arc welding rectifier connection diagram
The major function of sequence circuit is the control whole welding process: supply gas, striking, arc maintenance, welding current, various welding functions, blow-out, die etc. and to carry out automatically by presetting, as shown in Figure 2, duty by welding gauge tap control JK flip-flop, and control the control circuit of supplying gas with this, arc ignition control circuit, the spot welding time control circuit of arc maintenance control circuit and signal source control, they are mainly respectively by N1, N2, N3 and N4 constitute, four all adopt the FX555 time-base integrated circuit, simplified circuit structure greatly, the unit of use, the also corresponding minimizing of device count.Relay K 4 and K5, piezo-resistance Rv, electric capacity have been inserted at key position such as between welding gauge tap and the ground, between arc voltage sample circuit and output I, the J respectively for minimizing high frequency and external interference, to improve antijamming capability of the present utility model.
The current signal given circuit mainly constitutes square wave signal generator, comparator and integrator respectively by three integrated operational amplifier N5, N6, N7 as shown in Figure 3.Ignite behind the electric arc, the output of N6 is negative by just being turned to, the integrator that N7 constitutes carries out line integral, and welding current linear increment program begins, and the output of N7 is by-0.6V linear increment voltage stabilizing the value to voltage-stabiliser tube V3, control the size of M point output signal by Signal Regulation potentiometer RP5 and RP6, this is the control signal of arc welding rectifier output current, during blow-out, and the N6 upset, blow-out electric current linear attenuation program begins, and the output attenuatoin of N7 is to-0.6V.This integrator that mainly only is made of an operational amplifier N7 is realized the linear increment of welding current and the linear attenuation of blow-out electric current simultaneously, and not only scheme is simple and can guarantee the better linearity.When connecting switch S 4, the pulse signal of N5 output is modulated the output of N7, thereby the signal that makes output M also is a pulse signal, this moment, welding machine was finished " pulse welding " function, otherwise when S4 disconnects, high level of N5 constant output, output is not modulated to N7, then output M point is a direct current signal, and this moment, welding machine was finished " direct current welding " function.
Arc ignition circuit as shown in Figure 4, it is mainly by control transformer T2, flat characteristic high-tension transformer T3, high frequency transformer T4, spark generator H, three-phase transformer T1 and compositions such as three-phase commutation bridge VD1 and electromagnetic gas valve QF.When the K1 adhesive, electromagnetic gas valve QF work begins to carry argon gas; When the K3 adhesive, T1, VD1 give the output power supply, and there is floating voltage at I, J two ends; When the K2 adhesive, T3 starts working, the high-frequency generator work of paying the limit and connecting to form with H and T4 again after electric capacity is in parallel by T3, there is not the short circuit process during vibration, the energy utilization is abundant, loss is reduced, add that high-tension transformer has adopted the flat characteristic transformer, not only simple and striking moment can provide enough energy than high-leakage impedance transformer processing for it; When igniting electric arc, the little electric current of the arc maintenance such as 4A that keep-alive circuit output is more much smaller than rated welding current, and big inductance without arc welding rectifier, thereby increased the climbing speed of striking electric current, heavy current impact when also having prevented striking, the general electric welding machine of tungsten electrode loss ratio that causes when making striking and blow-out has reduced more than 2/3.
Connect when switch S 2, finish " spot welding " function, the spot welding time is controlled by the spot welding time control circuit that N4 constitutes.
Connect when switch S 3, finish " high-frequency arc strike ",, finish " contacting ignition arc " when switch S 3 disconnects.
When switch S 5 is connected, can be used to check gas flow.
When welding finished, relay K 3 disconnected, and cuts off the arc maintenance power supply; Relay K 1 disconnects, and air valve turn-offs.
The utility model can constitute the pulsed tungsten argon arc weld(ing) machine with adapteds such as the arc welding silicon controlled rectifier of various series, inverter arc welding rectifier, multi-functional arc welding rectifiers, Fig. 5 shows the schematic diagram that I of the present utility model, J, M end link to each other with the positive and negative end of ZX5 series arc welding rectifier respectively, and I, K are the output of the pulsed tungsten argon arc weld(ing) machine of formation.
The utility model is that a kind of circuit structure is reasonable, simple, use is first, device count is few, debugging, easy to maintenance, can satisfy multi-functional, multipurpose that high-quality welding requires, novel pulsed tungsten argon arc weld(ing) machine controller that can adaptive various Arc Welding Powers, the electric welding industry has the excellent popularization using value in China.
Claims (5)
1, a kind of pulsed tungsten argon arc weld(ing) machine controller is characterized in that it being by welding gauge tap 4, trigger 5, the control circuit 6 of supplying gas, arc ignition control circuit 7, arc maintenance control circuit 8, spot welding time control circuit 9, arc voltage sample circuit 10, signal source 11, current signal regulating circuit 12, high-frequency arc strike device 13 and keep-alive circuit 14 constitute, the input of trigger 5 and signal source 11 links to each other with welding gauge tap 4, the output of trigger 5 and the control circuit 6 of supplying gas, arc ignition control circuit 7, arc maintenance control circuit 8, the input of signal source 11 4 links to each other, the output of arc voltage sample circuit 10 links to each other with the input of arc ignition control circuit 7 with signal source 11 respectively, the output one tunnel of signal source 11 links to each other with the input of spot welding time control circuit 9, its output links to each other with the input of trigger 5, another road links to each other with the input of current signal regulating circuit 12, its output is the M end, the input of high-frequency arc strike device 13 links to each other with the output of arc ignition control circuit 7, its output is the K end, the input of keep-alive circuit 14 links to each other with the output of arc maintenance control circuit 8, its output links to each other with the input of arc voltage sample circuit 10, and this output is the I end.
2, pulsed tungsten argon arc weld(ing) machine controller according to claim 1 it is characterized in that supplying gas control circuit 6, arc ignition control circuit 7, arc maintenance control circuit 8 and spot welding time control circuit 9 all adopts time-base integrated circuit.
3, a kind of pulsed tungsten argon arc weld(ing) machine controller according to claim 1 is characterized in that pulse signal generator, comparator, integrator in the signal source 11 all respectively adopt an integrated operational amplifier.
4, a kind of pulsed tungsten argon arc weld(ing) machine controller according to claim 1 it is characterized in that in the high-frequency arc strike device 13 by flat characteristic high-tension transformer T3 with connect to form oscillating circuit with SD H and high frequency transformer T4 again after electric capacity is in parallel; Keep-alive circuit 14 connects three-phase commutation bridge VD1 by three-phase transformer T1 and is connected to output I through resistance again.
5, a kind of pulsed tungsten argon arc weld(ing) machine controller according to claim 1 is characterized in that welding between gauge tap 4 and the ground and is connected to relay K
4, be connected to relay K between arc voltage sample circuit 10 and output I, J end
5, piezo-resistance R
VAnd electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220365 CN2144553Y (en) | 1992-09-28 | 1992-09-28 | Controller for pulse tungsten argon arc welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92220365 CN2144553Y (en) | 1992-09-28 | 1992-09-28 | Controller for pulse tungsten argon arc welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2144553Y true CN2144553Y (en) | 1993-10-27 |
Family
ID=33767412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92220365 Expired - Lifetime CN2144553Y (en) | 1992-09-28 | 1992-09-28 | Controller for pulse tungsten argon arc welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2144553Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218582A (en) * | 2010-04-16 | 2011-10-19 | 深圳市佳士科技股份有限公司 | Submerged arc welding current pulse control circuit |
| CN105689845A (en) * | 2016-04-19 | 2016-06-22 | 朱攀高 | Semi-automatic spot welding machine |
| CN106563864A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | High-frequency impulse arc-initiating device on direct-current welder |
| CN106563865A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | Arc striking device of direct current welder |
-
1992
- 1992-09-28 CN CN 92220365 patent/CN2144553Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218582A (en) * | 2010-04-16 | 2011-10-19 | 深圳市佳士科技股份有限公司 | Submerged arc welding current pulse control circuit |
| CN102218582B (en) * | 2010-04-16 | 2014-01-29 | 深圳市佳士科技股份有限公司 | Submerged arc welding current pulse control circuit |
| CN105689845A (en) * | 2016-04-19 | 2016-06-22 | 朱攀高 | Semi-automatic spot welding machine |
| CN105689845B (en) * | 2016-04-19 | 2018-03-13 | 朱攀高 | A kind of semi-automatic mash welder |
| CN106563864A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | High-frequency impulse arc-initiating device on direct-current welder |
| CN106563865A (en) * | 2016-10-18 | 2017-04-19 | 丁毅 | Arc striking device of direct current welder |
| CN106563865B (en) * | 2016-10-18 | 2018-01-02 | 丁毅 | The arc initiation device of DC welder |
| CN106563864B (en) * | 2016-10-18 | 2018-03-23 | 江门市金鸿升金属制品有限公司 | High-frequency impulse arc initiation device on DC welder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |