CN2589141Y

CN2589141Y - Energy-saving apparatus for welding machine

Info

Publication number: CN2589141Y
Application number: CN 02211564
Authority: CN
Inventors: 薛征宇
Original assignee: Dalian Economic & Technological Development Zone Taocheng Electric Appliance Co
Current assignee: Dalian Economic & Technological Development Zone Taocheng Electric Appliance Co
Priority date: 2002-04-27
Filing date: 2002-04-27
Publication date: 2003-12-03
Anticipated expiration: 2012-04-27

Abstract

The utility model relates to an energy-saving device for an electric welding machine, which is characterized in that the energy-saving device for an electric welding machine comprises a detecting unit for confirming whether the electric welding machine is in a stand-by state or a work state, and a detecting unit for confirming whether the electric welding machine is in a dormant state or not, a timing and controlling unit for converting the state of the electric welding machine under the action of output signals of the two detecting units, an executing unit for realizing a special state provided by the timing and controlling unit, a state converting unit for converting the state and a pulse power supply circuit for transferring the dormant state of the electric welding machine to the stand-by state. The utility model has the advantage that because the state of the electric welding machine can be changed into the dormant state, the waste caused by the idling state in a long time is avoided.

Description

The electric welding machine energy saver

Technical field:

The utility model relates to the electric welding machine energy saver.

Background technology:

Existing electric welding machine, though be direct current or exchange, no matter also be in the construction state or be in idle state, all be to be in to connect electricity condition one for a long time this has seemed into a kind of quotidian thing usually in the whole working time, sometimes because idle chronic, so caused a large amount of electric energy consuming in vain.Particularly large-scale job site high-power AC and DC welding machine consumption is big, the operation noncontinuity, and welding machine is equivalent to a unloaded transformer when unloaded, and unloaded active loss is about 2% unit apparent energy, and reactive loss is about 10% unit apparent energy.Therefore, the power saving of solution electric welding machine just seems very necessary.

Summary of the invention:

The purpose of this utility model provides a kind ofly not only to be convenient to construct at any time but also to have guaranteed that the construction back was with the electric welding machine energy saver that power supply can be cut off automatically.

The purpose of this utility model is achieved in that a kind of electric welding machine energy saver, it is characterized in that: it comprises two state detection circuits, confirms that promptly electric welding machine is the holding state or the voltage detecting circuit of construction state and confirms that electric welding machine is the voltage detecting circuit of resting state; The output of said two of-state voltage testing circuits triggers timing and the control circuit that counter-rotating takes place the duty that can force electric welding machine respectively, according to regularly and the particular state of control circuit output triggers relay executive circuit that the electric welding machine main contactor opens and closes and according to regularly realizing that with the output of control circuit the electric welding machine that can make of logic circuit that two of-state voltage testing circuit duties are switched mutually and the output that is subjected to said logic circuit control is carried out the transition to the pulse power supply circuit of holding state by resting state.

Good effect of the present utility model:

1,, thereby avoided the long-time in the past unloaded idle waste that is caused owing to electric welding machine in time can be transformed into resting state from idle state; Also improve simultaneously the quality of voltage of electric power system, reduced the meritorious and idle loss of user power utilization;

2, because the existence of pulse power supply circuit can guarantee that AC-DC welder can both use.

Description of drawings:

Fig. 1 is a block diagram of the present utility model.

Fig. 2 is a schematic diagram of the present utility model.

The specific embodiment:

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

Among Fig. 1.GQ is a relay, and its normally opened contact is to link to each other with the input of resting state voltage detecting circuit, and its normally-closed contact is to link to each other with holding state voltage detecting circuit input.Holding state voltage detecting circuit 1 is to be used for detecting electric welding machine to be in the construction state or the circuit of holding state, and resting state voltage detecting circuit 2 is to be used for detecting the circuit whether electric welding machine is in resting state.Said construction state refers to electric welding machine and is in job state, the main contactor that said resting state refers to electric welding machine is in the state (the extraneous power supply that still keeps this energy-conservation device this moment) of disconnection, and said holding state refers to electric welding machine, and it enters this transition stage of resting state from stopping to construct.Be the time of the holding state of electric welding machine to be given to limit and makes it remove to drive relay executive circuit 4 main contactor of electric welding machine is disconnected arriving official hour with control circuit 3 regularly, meanwhile state conversion logic circuit 5 realizes that the state counter-rotating of systems promptly converts resting state to by holding state; Under holding state,, regularly be reset with control circuit if electric welding machine has operation to take place.When converting holding state to by resting state, dormancy voltage detecting circuit 2 forces state conversion logic circuit 5 regularly to reset with control circuit 3, final feasible originally being timed with the strong attitude of control circuit upset relay executive circuit in the past recovered. and pulse power supply circuit 6 is signal generators---and its output links to each other with the input of resting state testing circuit, during resting state, the signal input part of resting state testing circuit is to be connected with the lead-out terminal of electric welding machine, and in fact the pulse power 6 is to make system by the enabling signal source circuit of resting state to the holding state conversion.

Among Fig. 2, D1, R1, R2, R4, R8, R17, C1 and light idol U1A constitute construction or holding state voltage detecting circuit; R6, R7, R3, C2, D3 and light idol U1B constitute the resting state voltage detecting circuit; U3, U2D, U2C, C5, R13, C6 constitute regularly and control circuit; U2A, U2B, U4A, U4D, U6B, U2E, U2F, resistance R 15, R16, R17, R18, R19 and triode Q3, Q4, Q5 and relay GQ form the state conversion logic circuit; U6E, U6D, U6C, U4C, resistance R 14, triode Q2 and relay J Q have constituted the relay executive circuit that enforcement connects or disconnects to the electric welding machine main contactor; U5, U6F and resistance R 9, R10, R11, R12 and triode Q1, diode D4, D5, capacitor C 3, C4 constitute pulse signal generator or claim pulse power supply circuit.

Its course of work is:

Under original state, the relay GQ end that is connected with the lead-out terminal of electric welding machine links to each other with construction or holding state testing circuit input, the output light of this circuit idol U1 output (the input U2D in the timing control circuit) is not high level when electric welding machine has construction operation, regularly with control circuit in the 7 pin current potentials of U3 As time goes on can raise gradually-capacitor C 6 is recharged, when the charging interval reach time of presetting (here we fix tentatively be that the length of 5～6 minutes-this time can be adjusted as the case may be) still do not have construction requirement then regularly drive with control circuit above the base stage of said executive circuit-Q2 be low level, not conducting of Q2, relay J Q dead electricity, the main contactor of electric welding machine is in the state of disconnection, makes electric welding machine enter said resting state; Meanwhile, under the effect of the 7 pin high level of U3, the base stage R19 of Q5 in the state conversion logic circuit is a high level, and relay GQ connects, and it is that the terminal of relay GQ comes from the testing circuit that the input of diode D1 is switched to resting state that system is switched to resting state.If electric welding machine begins construction in preset time, light idol U1 is output as low level, regularly resets to U3 by U2D, U2C with control circuit, and 7 pin of U3 are output as low level, and this moment, the state of executive circuit JQ did not reverse.Make it not send the signal that disconnects main contactor.When electric welding machine operation one stops, the input of U2D just is high level-the enter said holding state in front.

When the main contactor of electric welding machine is under the condition that is disconnected is system when being in resting state, and the terminal of GQ is to link to each other with the testing circuit of resting state, and the terminal of the output of pulse power supply circuit and GQ joins in other words; When the electrode holder of electric welding machine contacted with work piece, the input of U2A was a high level, and the pressure drop on the resistance R 17 is a low level, and the input of U2D is a low level, and then by the 7 pin output signals of U3 system was switched to holding state.Change the construction state over to or the resting state front is narrated by holding state, just repeat no more.

Claims

1, a kind of electric welding machine energy saver is characterized in that: it comprises two state detection circuits, confirms that promptly electric welding machine is the holding state or the voltage detecting circuit of construction state and confirms that electric welding machine is the voltage detecting circuit of resting state; The output of said two of-state voltage testing circuits triggers timing and the control circuit that counter-rotating takes place the duty that can force electric welding machine respectively, according to regularly and the particular state of control circuit output triggers relay executive circuit that the electric welding machine main contactor opens and closes and according to regularly realizing that with the output of control circuit the electric welding machine that can make of logic circuit that two of-state voltage testing circuit duties are switched mutually and the output that is subjected to said logic circuit control is carried out the transition to the pulse power supply circuit of holding state by resting state.