CN2228819Y

CN2228819Y - Remote controller for multifunctional welder

Info

Publication number: CN2228819Y
Application number: CN 95203978
Authority: CN
Inventors: 樊钢
Original assignee: HEBEI POWER TEST INST
Current assignee: HEBEI POWER TEST INST
Priority date: 1995-03-02
Filing date: 1995-03-02
Publication date: 1996-06-12
Anticipated expiration: 2005-03-02

Abstract

The utility model discloses a remote controller for a multifunctional welder, which belongs to the controlling device of the inversion welder. The remote controller for a multifunctional welder is composed of a switch control circuit A, the sampling circuit of the signal voltage B, the diverter switch of the signal voltage C, an oscillator D, and a threshold clamp circuit E. The remote controller for a multifunctional welder has a plurality of control functions, such as the current regulation, the pulsed arc welding, the slow-speed striking, the time-delay attenuation, etc., and the remote controller for a multifunctional welder which is suitable for being matched with the existing inversion welder has the advantages of simple structure, low cost, and stable performance.

Description

Multifunction electric welding machine remote control device

The utility model relates to a kind of electric welding machine annex, specifically a kind of control device of inversion welding machine.

Inversion welding machine is realized remote-controlled operation easily because its electronic circuit has good control characteristic.At present external electric welding machine producer has produced remote controller, but it costs an arm and a leg; The remote controller of more domestic manufacturer production only has simple electric current regulatory function, can not adapt to the need of work of inversion welding machine fully.

The inversion welding machine remote controller that the purpose of this utility model just provides that a kind of cost is low, function is many is with the use needs that fully satisfy the domestic user and the need of work of inversion welding machine.

The utility model is achieved in that remote controller is made up of five parts, includes ON-OFF control circuit A, signal voltage sample circuit B, signal voltage change-over switch C, oscillator D and thresholding clamp circuit E.The two-way voltage signal output of signal voltage sample circuit B is connected to signal voltage change-over switch C respectively, the triggering signal of oscillator D exports the control end of signal voltage change-over switch C to, change-over switch C outputs to thresholding clamp circuit E with the signal voltage of controlled switching, ON-OFF control circuit A sends control signal and thresholding clamp circuit E joins, and thresholding clamp circuit E is connected to signal voltage on the inversion welding machine with cable.According to the operation principle of inversion welding machine, the size of its welding current is controlled by a signal voltage.Regulate the size of this signal voltage, just regulated the welding current of electric welding machine.This device main body is exactly a signal generation apparatus, with the needs different according to electric welding machine, produces different signal voltages and this signal voltage is guided on the inversion welding machine, finishes the function of remote adjusting electric welding machine.

Below in conjunction with accompanying drawing the utility model is further described,

Fig. 1 is a structured flowchart of the present utility model, and wherein A is an ON-OFF control circuit, and B is the signal voltage sample circuit, and C is the signal voltage change-over switch, and D is an oscillator, and E is the thresholding clamp circuit.

Fig. 2 is the circuit diagram of a kind of specific implementation of the present utility model.

As shown in Figure 2, the ON-OFF control circuit A in this remote controller is with counter U ₁With peripheral resistance R ₁-R ₃, capacitor C ₁, C ₂Overlap joint, K switch ₁Be connected to R ₁And C ₁Between the centre and ground wire of branch road, U ₁Output through R ₃Meet triode T ₁Base stage, T ₁Colelctor electrode and power supply between succeed electrical equipment J.U ₁Select integrated circuit 4204 chips for use.Work as K ₁Press counter U ₁Output uprise by low, make T ₁Conducting, the relay J running; K ₁When pressing again, T ₁End, relay J discharges.Pass through K ₁Action, can make relay J adhesive or release, control the output of thresholding clamp circuit E thus, realize the switch motion of remote controller.

Signal voltage sample circuit B is by three terminal integrated voltage stabilizer U ₂(7810) tap is by potentiometer W ₁Series resistor R ₄, potentiometer W ₂Series resistor R ₅Two bleeder circuits that constitute, two potentiometer W ₁, W ₂Sliding end tap amplifier U ₃, U ₄In-phase input end, two amplifier U ₃, U ₄Output termination signal voltage change-over switch C.This circuit is by voltage-stablizer U ₂Export one 10 volts constant circuit, adopt to such an extent that two are controlled voltages respectively, with peak value welding current and the valley welding current of the corresponding electric welding machine of difference in pulsed mode by two bleeder circuits.Resistance R ₄, R ₅Effect be to make the output current of electric welding machine be not less than minimum welding current, avoid blow-out.

Signal voltage change-over switch C selects integrated electronic switch U for use ₅(4053), the two-way of signal voltage sample circuit B output tap U ₅IN ₁And IN ₂End, U ₅The output of control end (A) and oscillator D join U ₅Output (OUT) meet thresholding clamp circuit E.In common working method, integrated electronic switch U ₅Be by IN ₁Connect the OUT end, transmit the signal voltage of corresponding peak value welding current.In pulsed mode, U ₅Be at two input IN ₁, IN ₂Between switch back and forth.U ₅Working method be subjected to the control of oscillator D.

Oscillator D is by integrated chip LM ₅₅₅(U ₈) and peripheral resistance R ₁₁-R ₁₄, potentiometer W ₄, W ₅, capacitor C ₄, C ₅With diode D ₇Overlap joint constitutes, at U ₈The 7th pin on also meet triode T ₂Base stage, T ₂Emitter stage series resistor R ₁₅After meet U ₈2 pin, T ₂The collector series connection resistance R ₉After connect K switch ₂One throw end.U ₈The 3rd pin output connect K switch ₂Another throw end, K ₂The control end (A) of dialling termination signal voltage change-over switch C.Work as K ₂With R ₉When branch road is communicated with, make the U of change-over switch C ₅Switch to common working method; Work as K ₂With U ₈3 pin output when being connected, U ₅Switch to pulsed mode.The detailed process of pulsed mode is at the beginning of energising, U ₈(LM ₅₅₅) 2 pin because C ₅Low level and trigger 3 pin output high level, C ₄Logical W ₄And R ₁₁Charging.W ₄In order to regulate the charging interval, with the time to peak of corresponding electric welding machine pulsed arc welding.When with C ₄When 6 pin that join were higher than reset level, the upset of 3 pin was low level, and 7 pin also become low level, C ₅Pass through W ₅, R ₁₄Discharge to 7 pin.W ₅In order to regulate discharge time, with the valley time of corresponding electric welding machine pulsed arc welding.Work as C ₅When being lower than triggering level, 2 pin trigger again, 3 pin output high level.So constantly circulation forms pulsed mode.

Thresholding clamp circuit E is that one the tunnel through resistance R from the output of signal voltage change-over switch C ₆Meet amplifier U ₆In-phase input end, another road serial connection diode D ₂, resistance R ₇Contact J with ON-OFF control circuit A repeat circuit J ₁After meet amplifier U ₇In-phase input end, U ₇In-phase input end also be connected in series clamp diode D ₄, D ₅Back earth connection.Relay contact J ₁The other end also be connected in series potentiometer W ₃And resistance R ₈After connect power cathode.U ₇Output through clamp diode D ₃Be connected to U ₆In-phase input end.When just powering up, the counter U among the ON-OFF control circuit A ₁D ₁End is low level, and relay J is failure to actuate, its contact J ₁Moving tongue piece and W ₃Link to each other C ₃Be low level.This low level is through buffer U ₇With clamp diode D ₃Act on amplifier U ₆Input, make U ₆Output low level.K in ON-OFF control circuit A ₁When pressing, relay J action, its contact J ₁Moving tongue piece and R ₇Branch road links to each other, integrated electronic switch U ₅Output pass through D ₂, R ₇To C ₃Charging.Along with C ₃Level raise D ₃To U ₆The clamping action of in-phase input end weaken gradually so that complete obiteration.At this moment, U ₆The level (Vt) of output is exactly the signal voltage output of commutation circuit.Meet down K once more ₁, relay J discharges, C ₃Pass through W ₃And R ₈Discharge, D ₃Clamping action strengthen gradually, until U ₆Output level (Vt) retract low level fully.W ₃Can regulate C ₃Discharge time delay time die-away time with correspondence.With U ₆Output signal voltage (Vt) pass and inversion welding machine with cable, can realize the long-distance remote control function.

This remote controller passes through potentiometer W among the signal voltage sample circuit B ₁And W ₂Adjusting, can change the size of signal voltage, realize electric welding machine output current regulating function thus.By K switch among the oscillator D ₂Dial and to throw selection, can realize the common welding of electric welding machine and the selection of two kinds of working methods of pulsed arc welding.The design of thresholding clamp circuit E has realized the time-delay attenuation function of striking at a slow speed and welding current having prevented the dash current that electric welding machine produces, and has prolonged the service life of inversion welding machine.This remote controller is simple in structure, stable performance, and function is many, and price is low, the suitable and supporting use of existing inversion welding machine.

Claims

1, a kind of multifunction electric welding machine remote control device, it is characterized in that this remote controller includes ON-OFF control circuit A, signal voltage sample circuit B, signal voltage change-over switch C, oscillator D and thresholding clamp circuit E, two outputs of signal voltage sample circuit B are received the input of signal voltage changeover switch C respectively, the output of oscillator D is connected to the control end of signal voltage change-over switch C, the output termination thresholding clamp circuit E of change-over switch C, ON-OFF control circuit A and thresholding clamp circuit E join, and the output of thresholding clamp circuit E is connected on the inversion welding machine through cable.

2, remote controller according to claim 1 is characterized in that ON-OFF control circuit A is with counter U ₁With peripheral resistance R ₁-R ₃, capacitor C ₁, C ₂Overlap joint, K switch ₁Be connected to R ₁And C ₁Between the centre and ground wire of branch road, U ₁Output through R ₃Meet triode T ₁Base stage, T ₁Colelctor electrode and power supply between succeed electrical equipment J.

3, remote controller according to claim 1 is characterized in that signal voltage sample circuit B is by voltage-stablizer U ₂Tap is by electric W ₁Series resistor R ₄, potentiometer W ₂Series resistor R ₅Two bleeder circuits that constitute, two potentiometer W ₁, W ₂Sliding end tap amplifier U ₃, U ₄In-phase input end.

4, remote controller according to claim 1 is characterized in that signal voltage change-over switch C selects integrated electronic switch U for use ₅, the two-way output tap U of signal voltage sample circuit B ₅IN ₁And IN ₂End.

5, remote controller according to claim 1 is characterized in that oscillator D is by integrated chip LM ₅₅₅(U ₈) and peripheral resistance R ₁₁-R ₁₄, potentiometer W ₄, W ₅, capacitor C ₄, C ₅With diode D ₇Overlap joint constitutes, at U ₈The 7th pin on also meet triode T ₂Base stage, T ₂Emitter stage series resistor R ₁₅After meet U ₈2 pin, T ₂The collector series connection resistance R ₉After connect K switch ₂, U ₈The 3rd pin output connect K switch ₂, K ₂The control end of dialling termination signal voltage change-over switch C.

6, remote controller according to claim 1 is characterized in that thresholding clamp circuit E is that one the tunnel through resistance R from the output of signal voltage change-over switch C ₆Meet amplifier U ₆In-phase input end, another road serial connection diode D ₂, resistance R ₇Contact J with relay J ₁After meet amplifier U ₇In-phase input end, U ₇Output through clamp diode D ₃Be connected to U ₆In-phase input end.