CN2166908Y

CN2166908Y - High efficiency ac arc welder

Info

Publication number: CN2166908Y
Application number: CN 93231272
Authority: CN
Inventors: 牟青岳
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-25
Filing date: 1993-06-25
Publication date: 1994-06-01
Anticipated expiration: 2003-06-25

Abstract

The utility model relates to a high efficiency AC arc welder, which belongs to an electric welder. The utility model is suitable for welding with acidic or alkali low hydrogen type welding rods. The utility model is characterized in that the utility model is composed of a machine frame, a clamping plate, a crossbeam, six windings (four of the windings are provided with taps), a high inductance iron core, an iron core clamp, a packet type switch, a fan, an input binding post, an output binding post, an earth contact binding post, an upper cover, a suspension ring and wheels. The windings and iron cores all fit for an added inductance, and the utility model has the advantage of reasonable design. Equipment investment can be saved by 50%, the electric power can be saved by 27%, copper material can be saved by 50%, and the change of polarity is fast when the welding current passes zero. The utility model is suitable for the welding with various models of acidic and alkali welding rods, and the utility model has the advantage of wide purpose.

Description

High efficiency ac arc welder

A kind of tapped high-performance AC arc welder belongs to the electric welding technical field, is mainly used in acid and the welding of low hydrogen type basic electrode.

Various forms of electric welding machines are of a great variety in prior art, as domestic and international conventional AC arc welder moving-iron type, moving-coil type arranged, series reactor formula and type such as tapped.These welding machines are mostly simple in structure, sturdy and durable, easy to use, current stabilization, but the neither ideal of their external characteristic curve, move easy the becoming flexible of iron and moving-coil and make the electric arc instability, Current Regulation is inaccurate, and main is can not use basic electrode to carry out intensity to be 50kg level and above welding thereof.Because the electric arc that AC welding set discharges is a kind of gas discharge of form, alternating current will inevitably influence the gas discharge of alternating current arc welding.In the moment of current zero-crossing point, the electronics emission of welding rod and workpiece will be in halted state, when using the welding of interchange acidic electrode and AC/DC alkalescence (potassium type) welding rod, because this moment, existing higher floating voltage existed, and the electric arc that can ignite again under higher temperature is so electric arc is considered to continuous burning on macroscopic view.But during as if the welding of employing direct current low hydorgew sodium type basic electrode, owing in the coating paint a large amount of fluorite (CaF are arranged ₂), wherein fluorine (F) rises and disappears electro ultrafiltration by force and be high elecrtonegativity, make the arc space cooling in the moment of welding current zero crossing arc extinction, and make remaining charging point few, therefore repeating the desired striking voltage of the starting the arc after electric current changes polarity will be up to 100～200V, and particularly arc stability more becomes to worsening when workpiece is in negative electrode.For solving this technical barrier, the technical scheme that with Japan is representative is that the floating voltage of common ac arc wedling machine is brought up to about 90～100V, though it can adapt to the welding of low hydrogen sodium electrode, but because floating voltage has surpassed domestic and international specified standard safe voltage 80V(effective value), personal safety to welding worker is unfavorable, for this reason must additional anti-electric shock apparatus, so make welding machine operation inconvenience and cause the power factor of welding machine to reduce, efficient is low, the copper material consumption is big.The technical scheme that with the U.S. is representative is to improve welding rod, promptly is coated with two coatings on basic electrode, makes its premium properties that had both kept basic electrode, can obtain stable electric arc again.This scheme is easy to operate, but this welding rod manufacturing process complexity, cost is too high, is difficult to promote.With the former Soviet Union is that the scheme of representative is an additional high-pressure transient pulse device on common ac arc wedling machine, though can use basic electrode welding, welding machine cost height, poor reliability partially.The sinusoidal waveform that improve supply frequency in addition in addition, changes welding current is a square waveform etc., but all need increase a large amount of electronic components, makes cost up, and poor reliability has no value for use.

The purpose of this utility model is to provide a kind of its winding and iron core parameter all to adapt with the increase inductance through strict calculating, reasonable in design, equipment investment can be saved about 50%, compare average saving power consumption about 27% with existing self cool DC arc welder, more common welder with taps can be saved copper material about 50%, alternating polarity during the welding current zero crossing is rapid, make electric arc have little time to extinguish, ignited again, supply voltage reaches maximum as far as possible when the welding current zero crossing, welding current reaches maximum as far as possible when the supply voltage zero crossing, the arc space temperature does not reduce, or few the reduction, to adapt to the tapped high-performance AC arc welder of direct current low hydorgew sodium type basic electrode welding.

Characteristics and rule according to electric welding basic principle and the variation of ac arc wedling machine electric arc, at the subject matter that exists in the prior art, basic design of the present utility model is: on the basis of the known ac arc wedling machine the most close with the utility model, calculating according to strictness, change original winding and unshakable in one's determination the related parameter shape arranged, raw material and cut mode, make welding machine increase inductance, when the moment of current over-zero higher floating voltage is arranged, change top unshakable in one's determination simultaneously and clamp form, make it to be beneficial to cooling channel, and set up packet type switch, the fan that is used to cool off, and to change former iron sheet casing be the plastic plate casing, thereby realize purpose of design.

Of the present utility modelly be characterised in that described tapped high-performance AC arc welder, by frame, clamping plate, crossbeam, the winding I, output wiring terminal, winding II and III, unshakable in one's determination, the winding IV, V and VI, loam cake, suspension ring, lead-in clamp, ground connection binding post and wheel constitute, prominent features is the above-mentioned winding II and the III of this arc welder, iron core and winding IV, V and VI related parameter arranged, shape, raw material and shear direction all adapt with the increase inductance, except that above-mentioned member, also by being beneficial to the clamp unshakable in one's determination that cooling makes transformer be convenient to ventilate, packet type switch, the fan that is used to cool off and the plastic plate formation of using as casing.By above-mentioned winding I, II, III, IV, the arc welder movement transformer of V and VI and coiling unshakable in one's determination is fixedly mounted on the above-mentioned crossbeam in the bottom of above-mentioned frame by above-mentioned clamping plate, upper end unshakable in one's determination is clamped by above-mentioned clamp unshakable in one's determination, so that the cold wind that is blown by fan can be smoothly by being beneficial to cooling, above-mentioned fan is installed in the top of above-mentioned frame, above-mentioned output wiring terminal, packet type switch, connect by lead between each contact of lead-in clamp and ground connection binding post tap relevant, surround casing (promptly this casing does not have base plate so that heat radiation) by above-mentioned plastic plate around the above-mentioned frame with above-mentioned each winding.Above-mentioned winding I is a secondary winding, and winding II and III and winding IV, V and VI are elementary winding, and winding I and winding II, III are the concentric type winding, and the winding I is at internal layer, winding II, III at skin with on the first post of above-mentioned iron core; Winding IV, V and VI are the concentric type winding, with on the second post of above-mentioned iron core, and winding I 20～80 circles, winding II 20～100 circles, winding III 0～20 circle, winding IV 20～100 circles, winding V 20～300 circles, winding VI 35～400 circles, winding II, III, IV and V respectively have 2～6 taps.Above-mentioned iron core is the three pillar type iron core for portable series, by cold rolling or hot rolling, cut sth. askew or vertical cut (has orientation person to cut sth. askew, no orientation person's vertical cut) silicon steel sheet constitutes, its intermediolateral column gap 1～8mm, the wide 30～90mm of post, thick 30～the 200mm of post, high 100～the 200mm of post, center-to-center apart from 30～250mm for portable be two legged magnetic cores, promptly do not have intermediolateral column.Above-mentioned packet type switch is made up of coarse adjustment and two switches of fine tuning, coarse adjustment 4～12 retainings, fine tuning 3～8 retainings.

The utility model has the advantages that: because winding and unshakable in one's determination related parameter is arranged all is through strict calculating and definite, the needs that increase inductance have been satisfied, welding current zero passage existing higher floating voltage of moment is existed, and alternating polarity is rapid, electric arc has little time to extinguish and is ignited, fundamentally solved the technical barrier that ac arc wedling machine adopts the welding of direct current low hydorgew sodium type basic electrode to be run into, therefore under normal condition, use this machine not only to adopt the interchange acidic electrode full position welding of all size, striking is easy, arc stability, electric arc is long and flexible, and it is few to splash, welder's good hand touch, appearance of weld is attractive in appearance; And adopt the DC-AC two-use low hydrogen potassium type basic electrode of all size and the full position of direct current low hydorgew sodium type basic electrode of all size to weld the shortcoming that all can reach the level of DC welder and not have the DC welder arc blow, use this machine also can under normal condition, use the electrode for cast iron of all size and stainless steel electrode that cast iron is executed downhand welding, built-up welding in addition, to stainless steel full position welding, especially to δ=0,8～1.The plate sheet welding of 5mm does not only burn through mother metal, and the two sides is shaped attractive in appearance.This welding machine external characteristic curve is perfect condition in principle.Again because reasonable in design, so this machine on average economizes on electricity about 27% than known self cool DC welder, than common tapped saving steel about 50%, thereby equipment investment can be saved about 50%, moreover, be convenient to cooling channel because top unshakable in one's determination adopts clamp to clamp, because using the plastic plate of insulation instead, casing surrounds, loss is low, and is safe in utilization.

Accompanying drawing 1 cuts open schematic diagram for one of the utility model most preferred embodiment general assembly office, and Fig. 2 cuts open schematic diagram for one of main change embodiment general assembly office.1 frame among the figure, 2 clamping plate, 3 crossbeams, 4 winding I, 5 output wiring terminals, 6 winding II, III, 7 iron cores, 8 winding IV, V and VI, 9 clamps unshakable in one's determination, 10 packet type switches, 11 fans, 12 loam cakes, 13 suspension ring, 14 plastic plates, 15 lead-in clamps, 16 ground connection binding posts, 17 wheels, 18 legs, 19 handle handles.

Frame 1 adopts angle steel to be welded into rectangular frame, overall dimensions 550 * 410 * 850(mm) in this embodiment; Clamping plate 2 and crossbeam 3 adopt the plank and the lumps of wood each two (root) respectively, and crossbeam 3 is fixed on the bottom of above-mentioned frame 1 by bolt and nut, and unshakable in one's determination 7 adopt the cold-reduced silicon sheets moulding of cutting sth. askew, three pillar type, the wide 70mm of post, the thick 104mm of post, the high 132mm of post, intermediolateral column gap 4mm; Winding I sectional area is 37.4mm ²Copper conductor around 33 circles; All the side of cutting is long-pending is 8.1mm for winding II and V ²Copper conductor respectively around 64 circles and 98 circles, winding III and IV are 6.7mm with sectional area all ²Copper conductor respectively around 12 circles and 39 circles, winding VI sectional area is 3.1mm ²Copper conductor around 52 circles, after turning to the movement transformer and doing impregnation process, the clamp unshakable in one's determination 9 that make with plastic plate its upper end clamps, its lower end is fixedly mounted on the above-mentioned crossbeam 3 by above-mentioned clamping plate 2, packet type switch 10 is selected 380V for use, two of 40A universal seclectors, and one is coarse adjustment 8 retainings, another fine tuning 5 retainings, it is the 2PF-30 type that fan 11 is selected model for use; Casing is embedded in by the polyvinyl chloride plastic flitch in four rectangular side wall of the above-mentioned frame of being made by angle steel 1, forms steel-plastic structure.

Change as present embodiment:

1, unshakable in one's determination 7 changes two pillars into as shown in Figure 2, switch 10 changes one into by two simultaneously, wheel 17 changes leg 18 into and increases handle 19, promptly can be changed into portable, again according to different 200 types that form of umber of turn and copper conductor sectional area, 160 types, 125 types, 100 types, 63 types, 50 types, 40 types or the like series of products;

2, in given range, change the size of three pillar type iron core 7, material (cold rolling heating is rolled), cut mode (the vertical cut change is cut sth. askew), each umber of turn and copper conductor sectional area promptly can be made into series of products such as portable 630 types, 500 types, 400 types, 315 types, 200 types, 160 types;

3, clamp 9 unshakable in one's determination can be used other insulating material making instead, also can use core through screw rod instead and fix, for not adopting the air-cooled wooden splint that also can change into to clamp;

4,10 pairs of high-power single-phase single three switches that change into of planting the voltage input of packet type switch are thickness tune switch and high to low gear switch, also available binding post is external or use various knife switch, import for the single-phase two kinds of voltages of small-power, can change voltage, electric current and three switches of high to low gear into, or external, or use various knife switch with binding post; For small-power single-phase single plant the voltage input also can change electric current and two switches of high to low gear into;

5, small-sized casing can change aluminum hull into; Or the iron sheet shell of larger volume;

6, fan 11 can be with different fan blade diameters, and the blower fan of different rotating speeds replaces.

Claims

1, a kind of tapped high-performance AC arc welder, by frame [1], clamping plate [2], crossbeam [3], winding I [4], output wiring terminal [5], winding II and III [6], [7] unshakable in one's determination, the winding IV, V and VI [8], loam cake [12], suspension ring [13], lead-in clamp [15], ground connection binding post [16] and wheel [17] constitute, described its winding II of tapped high-performance AC arc welder and the III [6] of being characterised in that of the present utility model, [7] and winding IV unshakable in one's determination, V and VI [8] all have and increase the parameter that inductance adapts, material and shape, except that above-mentioned member, this machine is also by the clamp unshakable in one's determination [9] that is beneficial to cooling, packet type switch [10], fan that is used to cool off [11] and the plastic plate of using as casing [14] constitute, by above-mentioned winding I [4], winding II and III [6], the winding IV, the arc welder movement transformer of V and VI [8] and [7] coiling unshakable in one's determination is fixedly mounted on by above-mentioned clamping plate [2] on the base cross members [3] of above-mentioned frame [1], and upper end unshakable in one's determination is clamped by above-mentioned clamp unshakable in one's determination [9]; Above-mentioned fan [11] is installed in the top of above-mentioned frame 1, connect by lead between each joint of above-mentioned output wiring terminal [5], packet type switch [20], lead-in clamp [15], ground connection binding post [16] tap relevant with above-mentioned each winding, above-mentioned frame [1] surrounds casing by above-mentioned plastic plate [14] all around.

2, tapped high-performance AC arc welder according to claim 1, it is characterized in that above-mentioned winding I (4) is secondary winding, winding II and III (6) and winding IV, V and VI (8) are elementary winding, winding I and winding II, III is the concentric type winding, with on the first post of (7) unshakable in one's determination, the winding IV, V and VI (8) are the concentric type winding, with on the second post of (7) unshakable in one's determination, winding I 20～80 circles, winding II 20～100 circles, winding III 0～20 circle, winding IV 20～100 circles, winding V 20～300 circles, winding VI 35～400 circles, winding II, III, IV and V respectively have 2～6 taps.

3, according to claim 1 and 2 described tapped high-performance AC arc welders, it is characterized in that above-mentioned iron core (7), for portable series is the three pillar type iron core, there are orientation or non-oriented silicon steel sheet to constitute its intermediolateral column gap 1～8mm, the wide 30～90mm of post by cold rolling or hot rolling, thick 30～the 200mm of post, high 100～the 200mm of post, center-to-center be apart from 30～250mm, for portable be two legged magnetic cores.

4, tapped high-performance AC arc welder according to claim 1 is characterized in that above-mentioned packet type switch (10) is made up of coarse adjustment and two switches of fine tuning, coarse adjustment 4～12 retainings, fine tuning 3～8 retainings.