CN218983517U

CN218983517U - Output circuit of mig-mma-cut multifunctional machine

Info

Publication number: CN218983517U
Application number: CN202223476775.5U
Authority: CN
Inventors: 吴建中
Original assignee: Nantong Free Electro Mechanical Co ltd
Current assignee: Nantong Free Electro Mechanical Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-09
Anticipated expiration: 2032-12-26

Abstract

The utility model provides an output circuit of a MIG-MMA-CUT multifunctional machine, which is applied to the technical field of output circuits, and two welding and cutting function output ends are respectively an MIG output end and an MMA output end for welding and a CUT output end for cutting through switching combination.

Description

Output circuit of mig-mma-cut multifunctional machine

Technical Field

The application relates to the technical field of output circuits, in particular to an output circuit of a mig-mma-cut multifunctional machine.

Background

With the development of digital multifunctional machines, the trend has been that how to realize reliable switching of different output functions and characteristics and how to effectively solve the requirements of different functions on circuit performance, so that each circuit performance of the multifunctional machine can reach the optimal level, the circuit is reliable and the cost is low, which is a difficult problem for the design of the circuit.

The existing combined output circuit is often that the plasma cutting output voltage is too high, high-frequency interference is added to influence an electric welding circuit, so that a wire-feeding circuit device of the electric welding circuit part breaks down and short-circuits; when the voltage of the circuit is too low, the cutting performance of the plasma cutting circuit is not good.

Disclosure of Invention

Compared with the prior art, the output circuit of the MIG-MMA-CUT multifunctional machine comprises a transformer circuit, a welding main loop, a cutting loop, an absorption loop, a CUT output end, an MMA output end and an MIG output end, wherein an inversion main transformer is arranged in the transformer circuit, a primary winding, a secondary winding I and a secondary winding II are connected through a wiring of the inversion main transformer, the secondary winding I is connected with the welding main loop, the welding main loop internally comprises two groups of fast recovery rectifier diodes, the welding main loop is connected with the MMA output end and the MIG output end, and a function switching relay K2 is connected between the MIG output end and the welding main loop;

the secondary winding II is connected with a cutting loop, the cutting loop comprises four groups of fast recovery rectifier diodes and peak absorption resistance capacitors of the rectifier diodes, the cutting loop is connected with a CUT output end, and a function switching relay K1 is connected between the CUT output end and the cutting loop;

output reactors are connected between the welding main loop and the cutting loop and between the welding main loop and the absorption loop, the two output reactors are connected in series, and the inside of the absorption loop comprises a high-frequency coupling transformer and an output current sampling sensor.

The two welding and cutting function output ends are respectively the MIG output end and the MMA output end for welding and the CUT output end for cutting through switching combination, the three function output ends are reliable in conversion, the performance of each function can reach the optimal performance, the cost is effectively reduced, the device can be used as a wake-up circuit of an inversion multifunctional machine series, the voltage in the circuit can be well controlled, the circuit function can be controlled by an analog or digital control circuit, different function outputs are realized, and the using function of the circuit is improved.

Furthermore, the CUT output end and the MMA output end share one output port, so that the cost for opening the ports is saved, and meanwhile, the circuit function is convenient for the control of the digital control circuit and the operation of the circuit.

Further, the first secondary windings are arranged in three groups, the first three groups of the second windings are shared by the MMA output end and the MIG output end, the second windings are arranged in two groups, and the first three groups of the second windings provide sufficient current for the MMA output end and the MIG output end.

Furthermore, the high-frequency coupling transformer is connected with a COM ground wire output end, so that circuit grounding is realized, and protection is provided for the circuit.

Further, the high-frequency coupling transformer is connected with the plurality of capacitors, the output current sampling sensor is arranged in front of the COM ground wire output end and is electrically connected with the welding main loop and the cutting loop, and the protection circuit is convenient for knowing the working state of the equipment through current and is convenient for working through the control equipment of the digital circuit.

Further, a plurality of capacitors of the high-frequency coupling transformer are connected to the ground line for protecting the circuit from high-frequency breakdown.

Compared with the prior art, the advantage of this application lies in:

(1) The circuit is characterized in that the two welding and cutting function output ends are respectively a MIG output end and a MMA output end which are used for welding and a CUT output end which is used for cutting through switching combination, the three function output ends are reliably converted, the performance of each function can reach the optimal performance, meanwhile, the cost is effectively reduced, the voltage in the circuit can be well controlled, the circuit can be used as a novel circuit of an inversion multifunctional machine series, the circuit function can be controlled by an analog or digital circuit, different function outputs are realized, and the use function of the circuit is improved.

(2) The CUT output end and the MMA output end share one output port, the cost of port opening is saved, meanwhile, the circuit function is convenient for the control of the digital control circuit, the operation of the circuit is convenient, the first secondary windings are arranged into three groups, the first three groups of secondary windings are shared by the MMA output end and the MIG output end, the second windings are arranged into two groups, and the first three groups of secondary windings provide sufficient current for the MMA output end and the MIG output end.

(3) The high-frequency coupling transformer is connected with a COM ground wire output end to realize circuit grounding and provide protection for a circuit, the high-frequency coupling transformer is connected with a plurality of capacitors, the output current sampling sensor is arranged in front of the COM ground wire output end and is electrically connected with the welding main loop and the cutting loop, the protection circuit is convenient for knowing the working state of equipment through current and is convenient for working through control equipment of the digital circuit, and the capacitors of the high-frequency coupling transformer are connected with the ground wire and are used for protecting the circuit from high-frequency breakdown.

Drawings

Fig. 1 is a circuit diagram of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present application are all within the scope of protection of the present application.

Examples:

the utility model provides an output circuit of a MIG-MMA-CUT multifunctional machine, referring to fig. 1, comprising a transformer circuit, a welding main loop, a cutting loop, an absorption loop, a CUT output end, an MMA output end and an MIG output end, wherein the CUT output end and the MMA output end share one output port, the cost of opening the port is saved, meanwhile, the partial circuit function is convenient for the control of a digital circuit and the operation of the circuit, the transformer circuit comprises an inversion main transformer, the connection of the inversion main transformer is connected with a primary winding, a secondary winding I and a secondary winding II, the secondary winding I is connected with the welding main loop, the secondary winding I is arranged into three groups, the three groups of secondary windings I are shared by the MMA output end and the MIG output end, the three groups of secondary windings I provide sufficient current for the MMA output end and the MIG output end, the welding main loop comprises two groups of fast recovery rectifier diodes, the welding main loop is connected with the MMA output end and the MIG output end, the MMA output end and the MIG output end respectively perform electric welding output and gas protection welding output, and the MIG output end is connected with a relay K2 between the welding main loop and the welding function switch; the secondary winding II is connected with a cutting loop, the secondary windings are arranged into two groups, the cutting loop internally comprises four groups of fast recovery rectifier diodes and rectifier diode peak absorption resistance capacitors, the cutting loop is connected with a CUT output end, the CUT output end performs plasma cutting output, and a function switching relay K1 is connected between the CUT output end and the cutting loop; the welding main loop, the cutting loop and the absorption loop are connected with output reactors, the two output reactors are connected in series, the inside of the absorption loop comprises a high-frequency coupling transformer, an output current sampling sensor and a COM ground wire output end, the high-frequency coupling transformer is connected with a plurality of capacitors, the output current sampling sensor is arranged in front of the COM ground wire output end, the output current sampling sensor is electrically connected with the welding main loop and the cutting loop, the protection circuit is convenient for knowing the working state of equipment through current and is convenient for working through control equipment of a digital circuit, and the capacitors of the high-frequency coupling transformer are connected with the ground wire for protecting the circuit from high-frequency breakdown;

when the circuit carries out the electric welding output function of MMA output end, function switching relay K1 and function switching relay K2 are in the disconnection state for cutting circuit disconnection state, MIG output end is also in the disconnection state simultaneously, when the short circuit carries out the plasma cutting output function of CUT output end, function switching relay K1 actuation state, function switching relay K2 is in the disconnection state, cutting circuit intercommunication, secondary winding provides the electric current for cutting circuit, the required output characteristic of cutting is realized to the machine, when the circuit carries out the gas shielded welding output function of MIG output end, function switching relay K1 is in the disconnection state, function switching relay K2 is in actuation state, MIG output end partial welding main circuit intercommunication, the circuit also begins work.

The foregoing description is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, within the scope of the present application, should apply to the present application, and all changes and modifications as fall within the scope of the present application.

Claims

1. The utility model provides an output circuit of MIG-MMA-CUT multifunctional machine, includes transformer circuit, welding main circuit, cutting circuit, absorption circuit, CUT output, MMA output and MIG output, its characterized in that, the inside of transformer circuit includes the contravariant main transformer, and contravariant main transformer wiring is connected with primary winding, secondary winding one and secondary winding two, secondary winding one is connected with the welding main circuit, the welding main circuit is inside to include two sets of fast recovery rectifier diodes, the welding main circuit all is connected with MMA output and MIG output, and is connected with function switching relay K2 between MIG output and the welding main circuit;

the secondary winding II is connected with a cutting loop, the cutting loop comprises four groups of fast recovery rectifier diodes and rectifier diode peak absorption resistance capacitors, the cutting loop is connected with a CUT output end, and a function switching relay K1 is connected between the CUT output end and the cutting loop;

2. The output circuit of a mig-MMA-CUT multifunctional machine of claim 1, wherein the CUT output shares an output port with the MMA output.

3. The output circuit of a MIG-MMA-cut multifunctional machine of claim 1, wherein the first secondary windings are arranged in three groups and the three groups of the first secondary windings are shared by the MMA output and the MIG output, and the second secondary windings are arranged in two groups.

4. The output circuit of a mig-mma-cut multifunctional machine of claim 1, wherein the high frequency coupling transformer is connected to a COM ground output.

5. The output circuit of a mig-mma-cut multifunctional machine of claim 4, wherein the high frequency coupling transformer is connected to a plurality of capacitors, the output current sampling sensor is disposed before the COM ground output, and the output current sampling sensors are electrically connected to the welding main circuit and the cutting circuit.

6. The output circuit of a mig-mma-cut multifunctional machine of claim 5, wherein the plurality of capacitors of the high frequency coupling transformer are each connected to ground.