CN2668315Y - Portable AC-DC argon arc welding machine - Google Patents

Abstract

The utility model relates to a portable AC-DC argon arc welding machine, whose circuit part comprises a working main circuit, a control circuit, an arc stabilizing circuit, a high-pressure arc striking circuit, and a potential transformer. The potential transformer is provided with an ellipse iron core and supplies power to the circuits through a secondary winding which is connected with a current regulator, the control circuit, the arc stabilizing circuit and the arc striking circuit, and through a secondary winding which is connected with a controllable silicon control circuit and supplies power to the main circuit. The potential transformer adopts an ellipse iron core which is made by a strip-shaped silicon steel sheet with high silicon and the long-and-short axis ratio of the iron core is 1. 2:1. The cross-sectional shape of the iron core is also an ellipse whose long-and-short axis ratio is 1. 2:1. For the utility model adopts the ellipse iron core as the power transformer, the structural design is optimized, the winding process is modified, the space availability ratio is improved, the magnetic path of the iron core is relatively shortened, the magneto resistance is decreased, and the electromagnetical coupling of the primary and secondary windings is enhanced. Besides, the potential transformer is integrated into one body, the bulk is small, the weight is light, the efficiency is high, the energy is saved, and consumption is reduced.

Description

A kind of portable alternating current-direct current argon arc welding machine

Technical field

The utility model relates to a kind of arc-welding machine, is meant a kind of portable high-efficiency ac arc wedling machine or alternating current-direct current argon arc welding machine especially, and this welding machine adopts the elliptical deformation depressor.

Background technology

Arc welder has very long history, and its manufacturing technology becomes better and approaching perfection day by day, but owing to fail to break through the restriction of its intrinsic operation principle, makes still to have many deficiencies so far: volume is big, Heavy Weight, move and carry inconvenience; Loss is big, caloric value is big, fragile apparatus insulated, welding machine service life is shortened; Owing to adopt natural heat dissipation, thereby easily electric leakage, easily short circuit, make complete machine non-moistureproof, be afraid of to get wet, poor safety performance; No-load current is big, power factor is low, power consumption is big, noise is big, efficient is low, with high-intensity magnetic field; Low-voltage starting the arc difficulty, the operation easier height; During welding machine work other electrical equipment such as TV, fluorescent lamp etc. there is interference.In view of this, Chinese patent ZL89217812 number " light-duty high energy electric welding machine " discloses a kind of electric welding machine of mainly being made up of iron core, coil, fuel tank, cold oil, regulating current device, support and cover plate, though this type with compare volume, weight and cost with constant power tradition welding machine and reduce significantly, but for light-duty portable electric welding machine, still dislike volume big, carry inconvenience, because oil viscosity height, mobile poor, specific heat is not high, make the cooling capacity deficiency, and iron core and coil directly immerse in the cold oil, are difficult to guarantee insulating requirements.Chinese patent ZL91220806 number " the portable electric welding machine of water-cooled " discloses and a kind of step-down transformer has been fixed on the cooling water tank inner bottom plating, insulate with epoxy resin and insulating paper with the surface of iron core, winding between winding, directly be immersed in the water, because the high specific heat and the flowability of water further improve cooling capacity, volume and weight further reduces, but it is well-known, the conductive capability of water is strong, directly with water cooling the electric leakage probability is heightened, thereby is difficult to apply.China's ZL98230916 patent " water-cooled AC and DC arc welding, argon arc welding machine " is then given and has been shown a kind of multipurpose arc-welding machine that comprises the water-cooled power transformer.Simultaneously, aforementioned each patent all adopts the conventional power source transformer, adopt rectangle iron core or annular core no matter be, owing to the reason in technique for coiling and the design, transformer is difficult to that compactness, space availability ratio are low, iron circuit is long, magnetic resistance is bigger, the volume of transformer is also big, consumption of materials greatly, heavier.

Summary of the invention

The purpose of this utility model provides a kind of arc-welding machine that adopts oval-shaped iron core to make power transformer, the raising of welding machine complete machine performance, volume are further reduced.

Designed a kind of portable alternating current-direct current argon arc welding machine according to above-mentioned purpose, circuit part comprises primary work loop, control circuit, arc static circuit, the high-voltage arc strike circuit that is coupled to each other, its circuit part also includes a transformer, this transformer has oval-shaped iron core, by two secondary windings to circuit supply.Wherein, a secondary windings connects with control circuit, arc static circuit and high-voltage arc strike circuit by rectifier, and provides direct current to each circuit; Another secondary windings passes through the silicon controlled rectifier control circuit to main circuit power supply.In the silicon controlled rectifier control circuit, a controllable silicon and a commutation diode also connect, and connect with a switching switch simultaneously.In addition, the long and short axial ratio of the oval-shaped iron core that the rectangular form height silicon of described employing silicon steel sheet is made is 1.2: 1, and the shape of cross section of iron core also is 1.2: 1 ellipse for long and short axial ratio.Add man-hour, the elementary winding of elliptical deformation depressor is equably on oval-shaped iron core, and two secondary windings are successively equably around the outside of elementary winding.

The utility model adopts oval-shaped iron core to make power transformer, has optimized the structural design of transformer, has improved technique for coiling, the space availability ratio of transformer is improved, shortened the magnetic circuit of iron core relatively, reduced magnetic resistance, the electromagnetic coupling of having strengthened between primary and secondary winding closes.In control circuit, the power supply transformer group integrator of arc-welding major loop and control circuit, arc static circuit and high-voltage arc strike circuit, make that volume, the weight of oval-shaped iron core transformer all reduce under same power, the efficient height, energy-saving and cost-reducing, thereby make the welding machine miniaturization, be convenient for carrying.

Description of drawings

Accompanying drawing 1 is that the master of the utility model transformer core looks schematic diagram; Accompanying drawing 2 is that the complete section of accompanying drawing 1 is cutd open schematic top plan view; Accompanying drawing 3 is the utility model Transformer Winding schematic diagrames; Accompanying drawing 4 is the utility model electrical principle schematic diagrames.

Specific embodiments

From Fig. 1 to Fig. 3 as seen, because the magnetic circuit of oval-shaped iron core is shorter, the space that the Transformer Winding coil encircles in oval-shaped iron core after the coiling is comparatively crowded, require the technique for coiling of winding coil meticulousr, the cross section of oval-shaped iron core also helps reducing material use amount and fastening winding coil for ellipse, makes transformer sturdy and durable.From Fig. 4 as seen, connect 220 volts of AC powers and closed battery main switch A, then power supply indicator A during use earlier ₁Bright and radiator fan A ₂Work, power supply relay A ₃Closed.As operating switch A ₁₄After the closure, relay indicating light A ₄Bright, main transformer T ₁, T ₂With civil power UNICOM, T ₁To export 180 volts of alternating currents as operating voltage, T ₂To export 110 volts of alternating currents powers to control circuit.Switch A ₆, A ₈Be linked switch, be the key of control circuit, civil power will flow into relay A when they are closed together ₁₅, this moment A ₁₅Open circuit T ₁Work, the work of silicon controlled rectifier control circuit, the utility model will use as ac arc wedling machine; T when they are opened together ₂Work, A ₁₅Adhesive, T ₂With voltage-stabilized power supply also be transtation mission circuit or arc static circuit A ₉UNICOM, relay A ₁₀Open circuit, circuit for producing high voltage is arc ignition circuit A ₁₁Work, the utility model will use as DC arc welder.

Claims (6)

1, a kind of portable alternating current-direct current argon arc welding machine, circuit part comprises primary work loop, control circuit, arc static circuit, the high-voltage arc strike circuit that is coupled to each other, it is characterized in that circuit part also includes a transformer, this transformer has oval-shaped iron core, by two secondary windings to circuit supply.

2, arc-welding machine according to claim 1 is characterized in that a secondary windings connects with control circuit, arc static circuit and high-voltage arc strike circuit by rectifier, and provides direct current to each circuit.

3, arc-welding machine according to claim 1 is characterized in that another secondary windings passes through the silicon controlled rectifier control circuit to main circuit power supply.

4, arc-welding machine according to claim 3 is characterized in that in the silicon controlled rectifier control circuit, and a controllable silicon and a commutation diode also connect, and connects with a switching switch simultaneously.

5, arc-welding machine according to claim 1, it is characterized in that adopting the long and short axial ratio of the oval-shaped iron core that rectangular form height silicon silicon steel sheet makes is 1.2: 1, the shape of cross section of iron core also is 1.2: 1 ellipse for long and short axial ratio.

6, according to each described arc-welding machine of claim 1 to 5, the elementary winding that it is characterized in that described elliptical deformation depressor is equably on oval-shaped iron core, and two secondary windings are successively equably around the outside of elementary winding.

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