CN204975634U - Welding set of soft switch of contravariant - Google Patents
Welding set of soft switch of contravariant Download PDFInfo
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- CN204975634U CN204975634U CN201520765434.0U CN201520765434U CN204975634U CN 204975634 U CN204975634 U CN 204975634U CN 201520765434 U CN201520765434 U CN 201520765434U CN 204975634 U CN204975634 U CN 204975634U
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- welding
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Abstract
(B, ) the utility model relates to a high -speed welding technique field of pressure and pipeline trade, in particular to welding set of soft switch of contravariant. The utility model discloses a welding set of soft switch of contravariant including the order connect be used for setting parameters the man -machine interface board, be used for drive control module drive module, be used for receiving the instruction of man -machine interface board and send the control module that send the silk instruction, be used for carrying out the thread feeding mechanism gentleness of sending the silk instruction and protect welder. The utility model discloses a man -machine interface board setting parameters, drive module drive control module receive the instruction of man -machine interface board and send and send the silk instruction, and the silk that send of thread feeding mechanism execution control module instructs, lose one's temper and protect welder according to sending the silk instruction to weld. The utility model discloses output arc stabilityarc, weld forming are fast, the molten bath degree of depth is unchangeable, and it is little to lose the consumption in addition, and welding speed is fast. (B, )
Description
Technical field
the utility model relates to the high-speed welding technical field of pressure and plumbing installations, particularly a kind of welder of inversion type flexible switch.
Background technology
in MIG welding or MMA welding technology field, traditional consumable electrode welding system needs when performing backing welding to adopt small area analysis welding, and easily workpiece is leaked in weldering, need to increase subsequent handling to repair workpiece, particularly current in pipeline and pressure vessel industries, adopt traditional Manual welding speed slow, and need change welding rod and strike the operations such as slag, serious waste man-hour and reduction production efficiency, and pressure vessel belongs to special equipment, production and processing job management is very strict, and demand is huge, therefore need to improve its production efficiency, speed of welding will be improved, but traditional consumable electrode gas guarantor weldering speed of welding is generally 0.5-0.6M/Min, raising welding current and weldingvoltage can accelerate speed of welding, but too high heat input can cause wlding to be out of shape and splash increasing, need to increase follow-up polishing operation, and traditional gas metal-arc welding welding system is joined constant-speed wire-feeding system by the power supply of constant-voltage characteristic and is formed, during normal weld, current fluctuation scope is minimum between 30-50A, when particularly dry extension of electrode changes, current changing rate reaches 50-80A, cause splashing and become suddenly large, weld penetration and welding fabrication width all change, seriously affect Weld Performance and outward appearance is shaping, and it is larger to compare power attenuation.
Summary of the invention
in order to overcome deficiency described above, the purpose of this utility model is to provide a kind of welder exporting arc stability, appearance of weld is fast, pool depth is constant inversion type flexible switch.
the technical scheme in the invention for solving the technical problem is:
a kind of welder of inversion type flexible switch, wherein, comprise be linked in sequence the man-machine interface plate for parameters, the driver module for drive control module, for receiving the instruction of man-machine interface plate and sending the control module of wire feed instruction, the gentle guarantor's welding gun of wire feeder for performing wire feed instruction.
improve as one of the present utility model, described control module comprise for the control instruction of received current feedback, Voltage Feedback and man-machine interface plate power control unit and for receive described wire feeder Current adjustment instruction, voltage-regulation instruction and control the high speed wire feed unit of wire feed and welding fabrication; Described power control unit comprises current-voltage sampling circuit and single-end ortho-exciting translation circuit; Described high speed wire feed unit comprises weldingvoltage feedback circuit, wire feed rate feedback circuit, PWM regulating circuit.
as further improvement of the utility model, described high speed wire feed unit also comprises wire feed braking circuit; Described wire feed braking circuit comprises transformer T1, diode V1, diode V2, controllable silicon N1, controllable silicon N2, light activated power thyristor U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, metal-oxide-semiconductor N3.
further improve as of the present utility model, described high speed wire feed unit also comprises welding sequential control circuit; Described welding sequential control circuit comprises some sequential logical circuits.
further improve as of the present utility model, described high speed wire feed unit also comprises arc voltage feedback control circuit and self-locking logic circuit, described arc voltage feedback control circuit comprises resistance R170, resistance R500, resistance R800, resistance R120, resistance R90, resistance R160, resistance R150, resistance R100, resistance R600, resistance R700, resistance R300, resistance R101, resistance R200, resistance R400, resistance R130, resistance R110, resistance R140, swept resistance W1, electric capacity C500, electric capacity C60, electric capacity C100, electric capacity C300, electric capacity C400, electric capacity C200, electric capacity C700, diode V10, operational amplifier N1C, operational amplifier N1A, PWM chip error amplifier B, described self-locking logic circuit comprises electric capacity C46, electric capacity C54, electric capacity C51, electric capacity C52, electric capacity C50, electric capacity C59, electric capacity C48, electric capacity C49, electric capacity C43, resistance R81, resistance R80, resistance R83, resistance R100, resistance R98, resistance R88, resistance R84, resistance R96, resistance R78, resistance R77, resistance R79, diode D4, diode D5, diode D6, diode D2, diode D3, light emitting diode U15, Zener diode Z5, triode Q1, triode Q3, chip J1, chip U17.
further improve as of the present utility model, described power control unit is connected by junction cable with described high speed wire feed unit, and described high speed wire feed unit is also connected by junction cable with described wire feeder.
further improve as of the present utility model, described driver module comprises current rectifying and wave filtering circuit, full-bridge phase-shift soft switch inverter circuit, full-wave rectifying circuit, power supply Industrial Frequency Transformer and driver element.
further improve as of the present utility model, described driver element comprises peak point current full-bridge sample circuit and phase-shifting full-bridge resonance circuit.
further improve as of the present utility model, in described wire feeder, be provided with Current Voltage regulating circuit.
further improve as of the present utility model, described junction cable comprises the control line of the adjustment of Current Voltage Setting signal, weldingvoltage feedback, crawl wire feed.
the utility model is by man-machine interface plate parameters, and driver module drive control module receives the instruction of man-machine interface plate and sends wire feed instruction, and wire feeder performs the wire feed instruction of control module, makes gas protect welding gun and welds according to wire feed instruction.The utility model exports arc stability, appearance of weld is fast, pool depth is constant, and loss power consumption is little, and speed of welding is fast.
Accompanying drawing explanation
for ease of illustrating, the utility model is described in detail by following preferred embodiment and accompanying drawing.
fig. 1 is structured flowchart of the present utility model;
fig. 2 is anatomical connectivity figure of the present utility model;
fig. 3 is wire feed braking circuit figure of the present utility model;
fig. 4 is working timing figure A of the present utility model;
fig. 5 is working timing figure B of the present utility model;
fig. 6 is self-locking logical circuitry of the present utility model;
fig. 7 is self-locking logic timing figure of the present utility model;
fig. 8 is arc voltage feedback control circuit figure of the present utility model;
fig. 9 is drive waveforms figure of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, the welder of a kind of inversion type flexible switch of the present utility model comprise be linked in sequence the man-machine interface plate for parameters, the driver module for drive control module, for receiving the instruction of man-machine interface plate and sending the control module of wire feed instruction, the gentle guarantor's welding gun of wire feeder for performing wire feed instruction.
further, control module comprise for the control instruction of received current, Voltage Feedback and man-machine interface plate power control unit and for receive wire feeder electric current, voltage-regulation instruction and control the high speed wire feed unit of wire feed and welding fabrication; Power control unit comprises current-voltage sampling circuit and single-end ortho-exciting translation circuit; High speed wire feed unit comprises weldingvoltage feedback circuit, wire feed rate feedback circuit, PWM regulating circuit.
power control unit mainly accepts Current Voltage feedback, adjusting of man-machine interface plate realizes constant current/constant voltage with the control instruction of control instruction and wire feeder and export.
high speed wire feed unit mainly accepts wire feeder electric current, voltage-regulation instruction, particularly realize the control of high speed wire feed and the control of welding fabrication together with weldingvoltage (workpiece protects welding gun end with gas) feedback signal, PWM is regulated accurately to control wire feed rate, the adjustment wire feed state that high speed is stable, ensure appearance of weld and pool depth constant.Also comprise wire feed braking circuit at high speed wire feed unit, when welding stops, realizing stable brake function after adopting rational time delay to ream welding wire front end bead, stop the adhesion of welding wire and workpiece; High speed wire feed unit also comprises wire feed braking circuit; Described wire feed braking circuit comprises transformer T1, diode V1, diode V2, controllable silicon N1, controllable silicon N2, light activated power thyristor U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, metal-oxide-semiconductor N3; In braking circuit, one is connected in parallel on the metal-oxide-semiconductor N3 of wire feeding motor positive and negative terminal, and when wire-feed motor normally works, this metal-oxide-semiconductor N3 gate pole dead electricity is closed, any impact is not had on wire-feed motor, when wire feeding motor brakes, this metal-oxide-semiconductor N3 must conduct, and short circuit wire feeding motor both positive and negative polarity plays the effect of short circuit brake; Wire feed braking circuit adopts SCR DC Governing circuit, realizes regulating the rotating speed of wire feeding motor by controlling the silicon controlled angle of flow.When trigger end has high level, light activated power thyristor U1 conducting, controllable silicon N1, N2 conducting, is added to power supply on motor.When brake signal is high level, metal-oxide-semiconductor N3 conducting, by R6 by electric motor short circuit, then realizes motor stalling.
high speed wire feed unit also comprises welding sequential control circuit; wherein there is non-self-lock-ing time sequence status and self-locking time sequence status; welding sequential control circuit is made up of a series of sequential logical circuit; when welding starts after arc welding gun switch welding instruction sends; first open electromagnetic gas valve and pass through protective gas in advance; at the end of welding after arc welding gun switch halt instruction sends; first reduce welding current and keep certain hour; then break welding current; finally postpone to turn off after certain hour electromagnetic gas valve to break protective gas, thus complete a complete welding sequential.As shown in Figure 4, high-speed welding system works sequential chart under non-self-lock-ing state, arc welding gun switch signal, protective gas signal, wire-feed motor signal, power supply, welding current.Work schedule is as follows: arc welding gun switch, and magnetic valve is opened, output protection gas, and delay a period of time (200-1000 millisecond is adjustable) the afterwards source of welding current is started working together with wire-feed motor, and welding starts; When disconnecting rifle switch, wire-feed motor stops driving and anxious stopping of brake, the source of welding current postpone a period of time (30-500 millisecond is adjustable) closes afterwards (effect: the bead of end of welding of pruning, guarantee is next when welding welding wire and absorption surface good).Last shut electromagnetic valve, stops the output of protective gas.As shown in Figure 5, high-speed welding system works sequential chart under self-locking state, arc welding gun switch signal, protective gas signal, wire-feed motor signal, power supply, welding current.Work schedule is as follows: press arc welding gun switch, can unclamp rifle switch after trigger switch signal, magnetic valve action, and protective gas exports, and delay a period of time (200-1000 millisecond is adjustable) the afterwards source of welding current is started working together with wire-feed motor, and welding starts; When again pressing rifle switch, trigger and receive arc current voltage regulator circuit, control system performs new welding current voltage parameter and welds workpiece.After unclamping rifle switch; wire-feed motor stops driving and anxious stopping of braking; the source of welding current postpone a period of time (30-500 millisecond is adjustable) close afterwards (effect: the bead of end of welding of pruning; ensure next time welding time welding wire and absorption surface good); last shut electromagnetic valve, stops the output of protective gas.
further, high speed wire feed unit also comprises arc voltage feedback control circuit and self-locking logic circuit, described arc voltage feedback control circuit comprises resistance R170, resistance R500, resistance R800, resistance R120, resistance R90, resistance R160, resistance R150, resistance R100, resistance R600, resistance R700, resistance R300, resistance R101, resistance R200, resistance R400, resistance R130, resistance R110, resistance R140, swept resistance W1, electric capacity C500, electric capacity C60, electric capacity C100, electric capacity C300, electric capacity C400, electric capacity C200, electric capacity C700, diode V10, operational amplifier N1C, operational amplifier N1A, PWM chip error amplifier B, described self-locking logic circuit comprises electric capacity C46, electric capacity C54, electric capacity C51, electric capacity C52, electric capacity C50, electric capacity C59, electric capacity C48, electric capacity C49, electric capacity C43, resistance R81, resistance R80, resistance R83, resistance R100, resistance R98, resistance R88, resistance R84, resistance R96, resistance R78, resistance R77, resistance R79, diode D4, diode D5, diode D6, diode D2, diode D3, light emitting diode U15, Zener diode Z5, triode Q1, triode Q3, chip J1, chip U17.Arc voltage FEEDBACK CONTROL is that given to this voltage and arc voltage voltage is compared and drawn error voltage by arc voltage when being welded by the collection of arc voltage Acquisition Circuit, goes to control wire-feed motor supply voltage and control to reach the object that wire feed rate stablizes arc voltage after passing ratio Integral Processing; Latching circuit is a d type flip flop circuit, and after arc welding gun switch welding instruction receives, d type flip flop is latched, a kind of this this welded condition of maintenance, only have after arc welding gun switch halt instruction receives, the latch that d type flip flop just removes welding machine state latches halted state then, until weld welding next time.Self-locking logical sequence as shown in Figure 7, self-locking state (4T), arc welding gun switch (GUN) triggers, whole High Speed System welding system is by normal setting voltage current work, and arc welding gun switch second time triggers, and pins rifle switch, receive arc Setting signal access control system, high-speed welding system is by electric current, the voltage power supply of receiving arc setting, and unclamp arc welding gun switch, welding machine quits work.
arc voltage feedback control circuit is as shown in Figure 8: welding arc voltage feedback Varc takes from electric arc end, error Vf is used for correction and adjusts and disturb, Vf=K (Uarc, Larc, Lw, Mcable, Mnozzle, Lcable), wherein K proportional feedback factor, Uarc: arc voltage, Larc: electric arc arc length, Lw: welding cable length, Mcable: welding material type, Mnozzle: ignition tip material, Lcable: welding cable length, by actual measurement different welding material, different line length, the welding parameter compared with control algorithm of arc length, realize the sampling of accurate arc voltage, ensure other disturbance factor except executed arc voltage feedback effectively rejected in welding process, accurate control PWM output pulse width regulates wire feed rate, ensure that in welding process, arc length is constant.
this circuit is made up of the resistance such as R5, R8, W1, R17, C5 and electric capacity, amplifier N1, V1 is used for clamper wire-feed motor armature afterflow feedback voltage, Vfeedback is wire feeder given pulsewidth when closing, the counter electromotive force that wire-feed motor armature produces because of coil afterflow when inertia continues to rotate; When Varc increases, the wire feed rate W1 that adjusts follows increase, and PWM adjusting pulsewidth increases, wire feeder faster rotational speed, and pilot arc length is constant; When Varc reduces, wire feed rate speed W1 follows reduction, and PWM adjusting pulsewidth narrows, and wire feeder spin down, prevents jackscrew, ensures that welding arc length is constant.
further, power control unit is connected by junction cable with high speed wire feed unit, and high speed wire feed unit is also connected by junction cable with wire feeder.
driver module comprises current rectifying and wave filtering circuit, full-bridge phase-shift soft switch inverter circuit, full-wave rectifying circuit, power supply Industrial Frequency Transformer and driver element; Driver element comprises peak point current full-bridge sample circuit and phase-shifting full-bridge resonance circuit; Peak point current full-bridge sample circuit is mounted in the testing circuit of primary side, and by arteries and veins current transformer, fast recovery diode full-wave rectifying circuit and intermediate frequency filtering circuit composition, detect the criterion of electric current as welding current size and the criterion of over-current signal of primary side; Phase-shifting full-bridge resonance circuit adopts general brachium pontis shunt capacitance resonance circuit method, brachium pontis shunt capacitance and IGBT body electric capacity and distribution capacity and transformer leakage inductance and cloth inductance form LC resonant tank, make IGBT be operated in the Sofe Switch state of zero voltage turn-off zero current turning-on by the pwm pulse of phase shift; Adopt phase-shifting full-bridge resonance circuit, and access resonant inductance and resonant capacitance to realize Sofe Switch, its duty and process as follows: assuming that when t=t0 starts, VT1, VT4 conducting, it is Io that transformer primary side flows through electric current.In the t=t1 moment, VT1 turns off, and primary side current of transformer still keeps Io constant under secondary current effect, now electric current is transferred to advanced arm shunt capacitance C1 and C2 from VT1, to C1 charging, C2 is discharged, VT1 zero voltage turn-off, is Io/2 by the electric current of C1, C2.After the some time, C1, C2 discharge and recharge terminates.As t=t2, Io diminishes rapidly under applied voltage effect, and VT4 realizes zero-current switching.In the t=t3 moment, C2 voltage drop is to being close to zero, and the conducting of VT3 anti-paralleled diode VD3 nature, and by the voltage clamping at VT3 two ends zero, now to realize no-voltage open-minded for VT3, and inverter is in freewheeling state.When Io is reduced to the saturation point electric current of pulsactor L1, L1 participates in work, and VT2 realizes zero current turning-on.Through after a period of time, pulsactor L1 is oppositely saturated, and transformer starts again to secondary conveying capacity, and the later course of work is similar.Owing to turning off prior to VT2, VT4 when VT1, VT3 work, therefore claim VT1, VT3 to be advanced arm, VT2, VT4 are lagging leg.△ t can think and to have nothing to do with Io, and current related with the saturation point of inductance L 1, and equal with the Dead Time between VT2, VT3.
current Voltage regulating circuit is provided with in wire feeder, wire feeder mainly performs wire feed instruction that high speed wire feed unit provides and completes wire feed function, and accept the welding parameter of operator's adjustment and feed back to high speed wire feed unit and power control unit, high speed wire feed unit is connected with adopting the mode of junction cable before wire feeder; Wire feeder adopts printed motor.
further, junction cable comprises the control line of the adjustment of Current Voltage Setting signal, weldingvoltage feedback, crawl wire feed.
drive waveforms figure of the present utility model is as shown in Figure 9: printed motor driving control system adopts PWM to regulate, and motor feedback voltage coefficient adds welding arc voltage V0 and compensates, and jointly regulates the size of wire feed rate after proportional integral with welding arc voltage.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the welder of an inversion type flexible switch, it is characterized in that, comprise be linked in sequence the man-machine interface plate for parameters, the driver module for drive control module, for receiving the instruction of man-machine interface plate and sending the control module of wire feed instruction, the gentle guarantor's welding gun of wire feeder for performing wire feed instruction.
2.
the welder of a kind of inversion type flexible switch according to claim 1, it is characterized in that, described control module comprise for the control instruction of received current feedback, Voltage Feedback and man-machine interface plate power control unit and for receive described wire feeder Current adjustment instruction, voltage-regulation instruction and control the high speed wire feed unit of wire feed and welding fabrication; Described power control unit comprises current-voltage sampling circuit and single-end ortho-exciting translation circuit; Described high speed wire feed unit comprises weldingvoltage feedback circuit, wire feed rate feedback circuit, PWM regulating circuit.
3.
the welder of a kind of inversion type flexible switch according to claim 2, is characterized in that, described high speed wire feed unit also comprises wire feed braking circuit; Described wire feed braking circuit comprises transformer T1, diode V1, diode V2, controllable silicon N1, controllable silicon N2, light activated power thyristor U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, metal-oxide-semiconductor N3.
4.
the welder of a kind of inversion type flexible switch according to claim 3, is characterized in that, described high speed wire feed unit also comprises welding sequential control circuit; Described welding sequential control circuit comprises some sequential logical circuits.
5.
the welder of a kind of inversion type flexible switch according to claim 4, is characterized in that, described high speed wire feed unit also comprises arc voltage feedback control circuit and self-locking logic circuit, described arc voltage feedback control circuit comprises resistance R170, resistance R500, resistance R800, resistance R120, resistance R90, resistance R160, resistance R150, resistance R100, resistance R600, resistance R700, resistance R300, resistance R101, resistance R200, resistance R400, resistance R130, resistance R110, resistance R140, swept resistance W1, electric capacity C500, electric capacity C60, electric capacity C100, electric capacity C300, electric capacity C400, electric capacity C200, electric capacity C700, diode V10, operational amplifier N1C, operational amplifier N1A, PWM chip error amplifier B, described self-locking logic circuit comprises electric capacity C46, electric capacity C54, electric capacity C51, electric capacity C52, electric capacity C50, electric capacity C59, electric capacity C48, electric capacity C49, electric capacity C43, resistance R81, resistance R80, resistance R83, resistance R100, resistance R98, resistance R88, resistance R84, resistance R96, resistance R78, resistance R77, resistance R79, diode D4, diode D5, diode D6, diode D2, diode D3, light emitting diode U15, Zener diode Z5, triode Q1, triode Q3, chip J1, chip U17.
6.
the welder of a kind of inversion type flexible switch according to claim 5, is characterized in that, described power control unit is connected by junction cable with described high speed wire feed unit, and described high speed wire feed unit is also connected by junction cable with described wire feeder.
7.
the welder of a kind of inversion type flexible switch according to claim 6, is characterized in that, described driver module comprises current rectifying and wave filtering circuit, full-bridge phase-shift soft switch inverter circuit, full-wave rectifying circuit, power supply Industrial Frequency Transformer and driver element.
8.
the welder of a kind of inversion type flexible switch according to claim 7, is characterized in that, described driver element comprises peak point current full-bridge sample circuit and phase-shifting full-bridge resonance circuit.
9.
the welder of a kind of inversion type flexible switch according to claim 8, is characterized in that, is provided with Current Voltage regulating circuit in described wire feeder.
10.
the welder of a kind of inversion type flexible switch according to claim 6, is characterized in that, described junction cable comprises the control line of the adjustment of Current Voltage Setting signal, weldingvoltage feedback, crawl wire feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765434.0U CN204975634U (en) | 2015-09-30 | 2015-09-30 | Welding set of soft switch of contravariant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765434.0U CN204975634U (en) | 2015-09-30 | 2015-09-30 | Welding set of soft switch of contravariant |
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| CN204975634U true CN204975634U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520765434.0U Expired - Fee Related CN204975634U (en) | 2015-09-30 | 2015-09-30 | Welding set of soft switch of contravariant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171189A (en) * | 2015-09-30 | 2015-12-23 | 深圳华意隆电气股份有限公司 | Welding device for inverse type soft switch |
| CN108115250A (en) * | 2017-12-19 | 2018-06-05 | 浙江劳士顿焊接设备有限公司 | A kind of Multifunctional welding drive circuit |
-
2015
- 2015-09-30 CN CN201520765434.0U patent/CN204975634U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171189A (en) * | 2015-09-30 | 2015-12-23 | 深圳华意隆电气股份有限公司 | Welding device for inverse type soft switch |
| CN108115250A (en) * | 2017-12-19 | 2018-06-05 | 浙江劳士顿焊接设备有限公司 | A kind of Multifunctional welding drive circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20190930 |