CN2106027U - Current regulator for rotating dc electric welding machine - Google Patents
Current regulator for rotating dc electric welding machine Download PDFInfo
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- CN2106027U CN2106027U CN 91215493 CN91215493U CN2106027U CN 2106027 U CN2106027 U CN 2106027U CN 91215493 CN91215493 CN 91215493 CN 91215493 U CN91215493 U CN 91215493U CN 2106027 U CN2106027 U CN 2106027U
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- 238000003466 welding Methods 0.000 title claims abstract description 72
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 239000003381 stabilizer Substances 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 238000005476 soldering Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- 230000008034 disappearance Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000519996 Teucrium chamaedrys Species 0.000 description 1
- WHRVRSCEWKLAHX-LQDWTQKMSA-N benzylpenicillin procaine Chemical compound [H+].CCN(CC)CCOC(=O)C1=CC=C(N)C=C1.N([C@H]1[C@H]2SC([C@@H](N2C1=O)C([O-])=O)(C)C)C(=O)CC1=CC=CC=C1 WHRVRSCEWKLAHX-LQDWTQKMSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Arc Welding Control (AREA)
Abstract
The utility model relates to a remote control device for regulating currents with a current regulating rod on the welding tongs of a DC welding machine, comprising an electrical control box, a mechanical actuating mechanism and a current regulating rod. The control contactor of an AC contactor is accessed into the excitation loop of a welding machine, and the output signal of a transistor oscillator is accessed into the DC output end of a welding machine to cause the welding machine respectively to be provided with two states of current regulation and arc welding. The utility model is mainly characterized in that a welding main loop is directly used to transfer control signals, control lines do not need to be appended, and the remote regulation of welding currents is achieved. The utility model has the advantages of reasonable design, simple structure, reliable work and convenient operation, being applicable to DC welding machines with two excitation modes.
Description
The utility model relates to the welding specialty.
Welding motor generator is firm in structure, and superior performance obtains using in the welding of higher industrial pipeline of various quality requirements and metal pressure container widely.But closely regulative mode is still adopted manually in the adjusting of electric current for a long time, for be engaged in remote weld job in high-altitude and the canister bring very inconvenient.
The someone has proposed various control control methods far away both at home and abroad at present, no matter is the excitation voltage method that changes welding machine with transistor circuits for triggering control thyristor operating angle, as Chinese utility model patent CN86210199U number.Or the control method that turns to by switch control reversible electric machine, as Chinese utility model patent notification number CN2056108U and notification number CN2056109U.
What also have directly makes the mode that independently is referred to as the portable type current adjuster with the welding machine rheostat.These all need be installed potentiometer or switch and connect many control lines on soldering turret, bring inconvenience for actual weld job.For the concentrated weld job place of large-scale canister, these additional control lines will bring dangerous and unreliable, so practical value is little especially.
The purpose of this utility model is to provide a kind of need not add control line not changing the direct welding major loop transmission control signal of utilizing under the welding machine original structure performance situation, and easy to operate electric welding machine simple in structure is far controlled to transfer and flowed device.
Its maximum characteristics are directly to utilize the welding major loop to transmit control signal, need not add control line, have realized that real electric current far controls adjusting.
In order to achieve the above object, the utility model proposes a kind of complete distinguished electric current and far control adjuster.Mainly by control cabinet, mechanical transmission mechanism and electric current regulating rod are formed.
Usually welding motor generator promptly has the welding floating voltage to take place after the star-delta change-over switch starts in energising, with just entering normal welded condition after the striking of welding rod contact workpiece, reverts to the floating voltage state after welding stops.Usually claim by welding machine, workpiece, the path that soldering turret cable and work piece cable are formed is the welding major loop.The welding machine that has only a kind of welded condition is a direct current signal in the welding major loop all the time, can't realize that therefore real electric current far controls adjusting.
The utility model be in multianalysis and tested proposed on the basis of such DC welder operating characteristic by input high frequency ac signal in the welding major loop and in the DC excitation loop Access Control contact, the welding machine state is divided into two kinds of states of mediation welding far away, and the new mode that can change mutually automatically, to realize electric current control far away and normal striking welding respectively.
Electric control box of the present utility model is mainly by transistor high-frequency signal source, striking control module with far transfer the unit three parts to form.Electrical schematic diagram such as Fig. 1, structural representation such as Fig. 2.
High-frequency signal source of the present utility model is striking and global semaphore source of transferring two unit far away.Because welding machine generator armature winding is a minimum perceptual heavy duty of internal resistance, it is strong to make high-frequency signal source have load capacity through particular design, and output amplitude is big, the characteristics of waveform symmetry.
Striking control module of the present utility model mainly is made up of four kinds of circuit.
1. by striking current transformer LH1, rectification bridge circuit QL3, voltage comparator F1, controllable silicon SCR 1 and DC relay J3 form controllable silicon striking circuits for triggering.
2. form controllable silicon no-load automatic stop circuit by rectification bridge circuit QL4, voltage-stabiliser tube DZ1, voltage comparator F3, unijunction transistor BT1.
3. form retardation by voltage comparator F2, voltage-stabiliser tube DZ5, power tube BG4, direct current retardation relay J 4 and connect circuit.
4. form no-load automatic stop time repeat circuit by power tube BG3, DC relay J5.
When clamping the striking of welding rod contact workpiece with soldering turret, the high frequency voltage of responding in the current transformer is through bridge circuit QL3 output control voltage triggered voltage comparator F1, triggering controllable silicon SCR 1 by the F1 output dc voltage makes relay J 3 get electric adhesive, its normally opened contact J3-1 closure, make A.C. contactor Jc get electric adhesive, the closed welding machine energized circuit of connecting of its normally opened contact Jc-1, welding machine sends floating voltage and enters welding striking state, the closure of another normally opened contact J3-2 of J3 makes voltage comparator F2 output control voltage promote power tube BG4, make 4 adhesives of direct current retardation relay J, one group normally-closed contact J4-1 cuts off the path of high-frequency signal and welding terminal, another group normally-closed contact J4-2 cuts off the high-frequency signal source current and makes its failure of oscillation simultaneously, the closure of the 3rd normally opened contact J3-3 of J3, light the welding indicator lamp, the expression welding machine enters welded condition.
When welding finished current interruption, the floating voltage of welding machine started the no-load automatic stop circuit working, punctured voltage-stabiliser tube DZ1 through bridge circuit QL4 output voltage, made voltage comparator F3, triggered output dc voltage.Driving simultaneously power tube BG3 again makes relay J 5 get electric adhesive, open its normally-closed contact J5-1, making capacitor C 8 charge to unijunction transistor BT1 triggering for generating pulse signal through potentiometer oppositely turn-offs controllable silicon SCR 1 rapidly, make relay J 3 dead electricity, releasing contact J3-1 cuts off A.C. contactor Jc power supply, and normally opened contact Jc-1 is discharged, cut off the welding machine energized circuit, make the welding machine floating voltage begin automatic disappearance.
The release of J3-2 contact is simultaneously turn-offed voltage comparator F2, cause power tube BG4 recover by and make 4 outages of retardation relay J, its two groups of normally-closed contact J4-1, J4-2 is closed simultaneously, connect the path of high-frequency signal source current and its output and welding machine respectively, make high-frequency signal insert output again, welding machine reverts to initial state at once.
The utility model at the disappearance that fully takes into account the welding machine floating voltage and voltage comparator by being conducting to all life period hysteresis of the recovery process of ending.All could connect high-frequency signal source automatically after the disappearance so require welding machine to finish its floating voltage of current interruption in welding.Also promptly require the disappearance of floating voltage and the access of high-frequency signal to keep certain hysteresis in time, reliable to guarantee the control system working stability.
Potentiometer R1 plays a part to select the no-load automatic stop time, voltage-stabiliser tube DZ1 plays the unloaded and load condition effect of identification welding machine, voltage-stabiliser tube DZ5 plays retardation and connects high-frequency signal, and contact J5-1 then rises and discharges on the capacitor C 8 residual charge to guarantee the repeatability of no-load automatic stop time.
Operating voltage during normal the welding is inoperative to the no-load automatic stop circuit, and only the floating voltage that occurs when welding finishes just can start the no-load automatic stop circuit working.Thereby the stability and the continuity of welding process have been guaranteed.Button AN1 plays the preceding usefulness in the work of ground check arc ignition system of welding.
The imagination of the branch cutting-welding machine duty that the utility model proposes realizes by the control contact of A.C. contactor and the control of no-load automatic stop circuit.
Electric current of the present utility model far transfers the unit mainly by accent transformer LH2 far away, the transistor high-frequency generator second output winding MN, voltage stabilizing bridge circuit, diode polarity is identification circuit relatively, power tube BG5, BG6, midget relay J1, J2, compositions such as reversible motor mechanism and electric current regulating rod.
When welding finishes to need to regulate electric current, the welder need only insert between soldering turret and workpiece with the electric current regulating rod of carrying, at this moment light the red led on the rod, show that welding machine enters adjustment state, so the transmission mechanism on the welding machine rheostat can rotate accordingly to obtain the adjusting of electric current.According to the direction of soldering turret contact rod end and the length of time of contact, can obtain required electric current and regulate.Its principle is because the diode detection effect in the regulating rod, make in the welding major loop and produce the half-wave conditioning signal, through the dc control signal of transferring this transformer induced half-wave conditioning signal and transistor oscillator second output signal to carry out an assigned direction of generation in the polarity identification circuit that polarity is being constituted by a diode after relatively far away, amplify the DC relay action of rear drive correspondence through power tube, its normally opened contact closure, connect the reversible motor power supply, make its direction drive rheostat rotation in accordance with regulations, to obtain the remote adjusting of electric current.
Be designed so that soldering turret contact regulating rod+relay J 1 adhesive during end, motor is by the direction of rotating along clockwise to the welding current increase, otherwise otherwise.Button AN2, AN3 and indicator lamp are the usefulness of regulating electric current and indicator current and indicator current adjusting for ease of ground.
The utility model has the control perfect in shape and function through well-designed and actual use, and working stability is reliable, and is simple in structure, easy for operation, and the characteristics of highly versatile are applicable to the DC welder of two kinds of different exciting modes.Can easily all welding motor generators be repacked into control type DC welder far away under machine original structure and the performance situation not changing.
Description of drawings: B1 is the control power transformer among Fig. 1, B2 is the transformer of high-frequency generator, K1 is a power switch, M1 is phase asynchronous alternating current generator, and M2 is the welding machine dc generator, and M3 is the rheostatic driving reversible electric machine of welding machine, H is a current divider, R3 is the welding machine rheostat, and V, A are D.C. voltmeter and ammeter, and T is the electric current regulating rod.
1 is the rheostat transmission mechanism among Fig. 2,2 is welding motor generator, 3 is multi-core controlled cable, and 4 and 5 is electric control box and welding machine stube cable, 6 expression arc weldings, 7 expression electric currents are regulated, 8 is workpiece, and 9 is electric control box, and 10 is the control cabinet attaching plug, 11 is the soldering turret cable, and 12 is work piece cable.
Embodiment: same Fig. 1 of electrical schematic diagram of a kind of DC welder current regulator of practicality, the same Fig. 2 of structure chart.DC welder is the AX-320 welding motor generator.Two oscillating tubes are 3DD15B in the transistor high-frequency generator, and resistance R 1 is BX21-8W-5.1 Ω, and R3 is 1.2K, and C2 is CD11-10V-10 μ, and bridge heap QL1 is 3A100V.
Voltage comparator F1, F2, F3 are the 5G23 operational amplifier in the striking welding unit, controllable silicon SCR 1 is 3CT3K, unijunction transistor BT1 is BT33F, power tube BG3, BG4 are 3DG6B and 3DG12B multiple tube, voltage-stabiliser tube DZ1 is 2CW68, and DZ5 is 2CW52, and DZ2, DZ3 are 2CW51, DZ11, DZ12 are 2CW77, and all the other diodes are 2CZ82B.A.C. contactor Jc is CJ10-220V-10A, DC relay J3, J4 be JQ *-10F, J5 is JRC-5M, potentiometer R1 is WTH-1-2W-68K, bridge heap QL2 is 0.5A50V.
Voltage-stabiliser tube DZ6-DZ8 is 2CW107 in the accent far away unit, and DZ9-DZ10 is 2CW105, and all the other diodes are 2CZ82B.Power tube BG5, BG6 are 3DG6B and 3CG130B compound tube.DC relay J1, J2 are JRC-5M, and exchanging reversible electric machine M3 is ND-15, and capacitor C 19 is CJ41-2 μ-250V, and limit switch is a microswitch.
Regulating rod is made the micropen type shape, can carry.Element D21 is diode 2DP1A50V in the rod, and resistance R 35 is RX21-8W-10 Ω, and R36 is RJ2.7K-0.25W, and indicator lamp D22 is light emitting diode BT201.
The striking of model machine and accent far away sensitivity are 3 Ω-100 Ω after measured, and control distance promptly far away is 100 meters.
Claims (5)
1, a kind of current regulator of the welding motor generator applicable to self-excitation or its excitation mode is characterized in that the control contact of incoming transport contactor in the DC excitation loop of welding machine and inserts the output of the transistor high-frequency generator that is connected through direct current retardation relay control contact at the welding machine dc output end.
2,, it is characterized in that second group of output of transistor high-frequency generator is compared in the identification circuit with the polarity of far transferring transformer output to insert the diode composition by right 1 described adjuster.Between soldering turret and workpiece, insert the electric current regulating rod, directly the driving device transmission mechanism.
3, by right 1 described adjuster, it is characterized in that said A.C. contactor Jc inserts by striking transformer LH1, rectification bridge circuit QL3, voltage comparator F1, controllable silicon striking circuits for triggering that controllable silicon SCR 1 and DC relay J3 form and by bridge circuit QL4, voltage-stabiliser tube DZ1, voltage comparator F3 is in the no-load automatic stop circuit that unijunction transistor BT1 forms.
4, by right 1 described adjuster, it is characterized in that said direct current retardation relay J 4 inserts at voltage comparator F2, voltage-stabiliser tube DZ5, the retardation that power tube BG4 forms is connected in the circuit.
5, by right 2 said devices, it is characterized in that said electric current regulating rod by diode D21, resistance R 35, R36 and light emitting diode D22 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215493 CN2106027U (en) | 1991-05-22 | 1991-05-22 | Current regulator for rotating dc electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215493 CN2106027U (en) | 1991-05-22 | 1991-05-22 | Current regulator for rotating dc electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2106027U true CN2106027U (en) | 1992-06-03 |
Family
ID=4923567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91215493 Pending CN2106027U (en) | 1991-05-22 | 1991-05-22 | Current regulator for rotating dc electric welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2106027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238867A (en) * | 2016-08-25 | 2016-12-21 | 湘潭大学 | A kind of applying self adaptation flat peak pulse signal narrow gap welding connected control system and method |
-
1991
- 1991-05-22 CN CN 91215493 patent/CN2106027U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238867A (en) * | 2016-08-25 | 2016-12-21 | 湘潭大学 | A kind of applying self adaptation flat peak pulse signal narrow gap welding connected control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |