WO2021114007A1 - Multifunctional electric welding machine - Google Patents

Abstract

Provided is a multifunctional electric welding machine, comprising a welding torch (1) and a welding device (2); the welding torch (1) comprises a nozzle and a circuit unit; the circuit unit comprises a parameter input unit (11), a signal processing unit (12), a display unit (13), and a welding torch communication unit (14); the parameter input unit (11) is used for inputting welding parameters; the display unit (13) is used for displaying said welding parameters; the welding torch communication unit (14) is used for connecting with the welding device (2) for performing data communication, and for supplying power to the circuit unit; the signal processing unit (12) is used for connecting with the parameter input unit (11), the display unit (13), and the welding torch communication unit (14), and for receiving and processing the signals transmitted from the parameter input unit (11) and the welding torch communication unit (14). The multifunctional electric welding machine integrates multiple functions, such as direct-current manual welding, argon arc welding, gas-shielded welding, and alternating-current gas-shielded welding; in the welding state, the actual current and voltage of the welding can be displayed in real time; in the parameter setting state, it is possible to adjust and display all parameters on the welding device, switch the welding mode and store and recall welding parameters, and achieve actual visual control.

Description

Multifunctional electric welding machine Technical field

The invention relates to the technical field of electric welding equipment, in particular to a multifunctional electric welding machine.

Background technique

As an indispensable tool in industrial manufacturing, electric welding machine is mainly used to make two separated metal objects produce atomic union and connect them into a whole. It uses the high temperature arc generated by the positive and negative poles in an instantaneous short circuit to melt the electric welding. The solder on the strip and the material to be soldered combine to be contacted. The electric welding machine includes a welding machine and a welding torch. The welding torch uses the high current and high voltage of the welding machine to gather the heat generated at the welding torch terminal, melting the welding wire, and the molten welding wire penetrates into the part to be welded. After cooling, the welded object is firmly connected to form One. At present, the general electric welding machines on the market are mainly divided into the following categories: 1. Classification from the output type: can be divided into DC welding machines and AC welding machines; 2. Classification from the use of welding machines: can be divided into manual welding and argon arc welding And gas shielded welding.

At present, most of the electric welding machines in circulation are DC welding machines or AC argon arc welding. Most welding machines use one welding method, and a few are a combination of two or three. With the development of industry, the traditional electric welding machine with only a single function can no longer meet the needs of the market. Users need a welding machine that can realize multiple welding functions, so that they can switch between different function modes in different welding situations. Meet different welding needs instead of changing different welding machine types. In addition, the welding gun in the prior art has no display screen, cannot display the current and voltage in the welding process in real time, and cannot display the parameters set on the welding gun. In addition, multiple wires are required between the existing welding gun and the welding machine, which are used to supply power to modules such as the control unit and provide data communication, which leads to a complicated structure of the welding gun and a high cost.

Summary of the invention

In view of the above shortcomings, the present invention provides a multifunctional electric welding machine, which integrates various functions such as DC manual welding, argon arc welding, gas shielded welding, and AC gas shielded welding. It can display the actual welding current and welding status in real time in the welding state. Voltage, in the parameter setting state, you can adjust and display all the parameters on the welding machine, switch the welding mode, store and call the welding parameters, realize the real operation terminal control, the switching is convenient, and the operation process is visualized.

The technical scheme of the present invention is:

A multifunctional electric welding machine includes a welding gun and a welding machine. The welding gun includes a nozzle and a circuit unit. The circuit unit includes a parameter input unit, a signal processing unit, a display unit, and a welding gun communication unit. The parameter input unit is used for input Welding parameters, the display unit is used to display the welding parameters, the welding torch communication unit is used to connect to the welding machine for data communication, and to supply power to the circuit unit, and the signal processing unit is used to input the parameters The unit, the display unit and the welding gun communication unit are connected to receive and process the signals transmitted from the parameter input unit and the welding gun communication unit.

The welding gun communication unit is connected with the welding machine through a first switch line and a second switch line. The first switch line is used to provide data communication and power supply between the welding gun and the welding machine, and the second switch line is grounded.

The welding machine includes a power supply and a welding machine communication unit, and the first switch line includes a power supply branch line connected with the power supply and a communication branch line connected with the welding machine communication unit.

The welding gun communication unit includes a first signal terminal connected to the first switch line and a second signal terminal connected to the signal processing unit. When the first switch line is powered, the first signal terminal is high Level, the second signal terminal is low level, when the first switch line provides data communication, the first signal terminal is low level, and the second signal terminal is high level.

The torch communication unit includes a Zener diode, a resistor, and a diode. The anode of the Zener diode is grounded, the cathode is connected to the first signal terminal, the anode of the diode is connected to one end of the resistor, and the other end of the resistor is connected to the second terminal. The signal terminal is connected.

The welding gun communication unit further includes a first capacitor, a second capacitor, and a third capacitor. One end of the first capacitor is connected to the second signal terminal and the resistor, the other end is grounded, and one end of the second capacitor is connected to the cathode of the diode. , The other end is grounded, one end of the third capacitor is connected to the cathode of the Zener diode, and the other end is connected to the anode of the Zener diode and grounded.

The display unit is a liquid crystal display screen, and the liquid crystal display screen is used to display the welding current and/or voltage in the power supply state of the welding gun communication unit.

The parameter input unit includes a button circuit and a switch detection circuit.

In the multifunctional electric welding machine of the present invention, the circuit unit of the welding gun includes a parameter input unit, a signal processing unit, a display unit and a welding gun communication unit. The parameter input unit allows the operator to input and adjust the working parameters of the welding machine, and the display unit can visually observe To the input parameter value, ensure that the input value is correct and ensure the accuracy of the welding process. During the working process of the electric welding machine, the display unit can display the actual welding current and voltage in real time. When the current and voltage deviate, it can be adjusted immediately to ensure strict control of the welding process parameters. In addition, the welding torch communication unit and the welding machine are only connected through the first switch line and the second switch line. The first switch line is used to provide data communication between the welding torch and the welding machine, as well as power supply. A single switch line effectively simplifies The structure of the electric welding machine makes the connection between the welding machine and the welding gun more concise, and reduces the setting cost and use cost of the electric welding machine.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the multifunctional electric welding machine of the present invention;

Figure 2 is a circuit structure diagram of the welding gun communication unit of the present invention;

Fig. 3 is a circuit structure diagram of the parameter input unit of the present invention;

4 is a circuit structure diagram of the display unit of the present invention;

Fig. 5 is a circuit structure diagram of the signal processing unit of the present invention.

Detailed ways

In the following, the concept, specific structure and technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

1, a multifunctional electric welding machine of the present invention includes a welding gun 1 and a welding machine 2. The welding gun 1 includes a nozzle and a circuit unit. The circuit unit includes a parameter input unit 11, a signal processing unit 12, a display unit 13, and a welding gun communication unit. 14. The parameter input unit 11 is used to input welding parameters. The welding parameters include welding mode, wire feeding speed and preset voltage. The parameter input unit 11 has a cross-shaped button. You can select the welding parameters that need to be set by pressing the left and right buttons. , Press the key to change the size of the parameter. The signal processing unit 12 is used for connecting with the parameter input unit 11, the display unit 13, and the welding gun communication unit 14, and receives and processes the signals transmitted from the parameter input unit 11 and the welding gun communication unit 14. The display unit 13 is a liquid crystal display. In the working state, the display unit 13 is used to display the welding current and/or voltage, and in the parameter setting state, the display unit 13 is used to display the input welding parameters.

The welding gun communication unit 14 is used to connect with the welding machine 2 for data communication, and to supply power to the circuit unit. The welding gun communication unit 14 and the welding machine 2 are connected through a first switch line 31 and a second switch line. The first switch line 31 is used to provide data communication and power supply between the welding gun 1 and the welding machine 2, and the second switch line is grounded. The data is bidirectional data, including not only the data written from the welding machine 2 to the welding gun 1 but also the data read from the welding machine 1 and the welding machine 2. The welding machine includes a power source 21 and a welding machine communication unit 22. The first switch line 31 includes a power branch line 311 connected to the power source 21 and a communication branch line 312 connected to the welding machine communication unit 22. The power branch line 311 is used to provide power transmission. , The communication branch 312 is used to provide data transmission.

The welding gun communication unit 14 includes a first signal terminal connected to the first switch line 31, and a second signal terminal connected to the signal processing unit 12. When the welding machine is in working state and the first switch line 31 supplies power, the first signal terminal Is a high level, and the second signal terminal is a low level. When the welding machine is in the parameter setting state and the first switch line 31 provides data communication, the first signal terminal is low level and the second signal terminal is high level, specifically: when the micro-processing unit of the welding machine 2 sends data transmission After the instruction, the first signal terminal turns to low level, the power branch line 311 stops transmitting power, the communication branch line 312 transmits the instruction to the signal processing unit 12 of the welding gun 1, the signal processing unit 12 generates a response signal, and the first switch line 31 enters Data transfer mode.

2, the welding gun communication unit 14 includes a Zener diode ZD0, a resistor R2, and a diode D0. The anode of the Zener diode ZD0 is grounded, and the cathode is connected to the first signal terminal IN; the anode of the diode D0 is connected to one end of the resistor R2, and the other end of the resistor R2 Connect with the second signal terminal Signal. The torch communication unit 14 also includes a first capacitor C11, a second capacitor C0, and a third capacitor C10. One end of the first capacitor C11 is connected to the second signal terminal Signal and the resistor R2, and the other end is grounded; one end of the second capacitor C0 is connected to the cathode of the diode D0 , The other end is grounded; one end of the third capacitor C10 is connected to the cathode of the Zener diode ZD0, and the other end is connected to the anode of the Zener diode ZD0 and grounded.

The welding machine 2 of the electric welding machine is the master machine, and the welding gun 1 is the slave machine. In the working state, the first signal terminal IN is high level 1. When the welding machine 2 needs to send a signal to the welding gun 1, the host sends a start signal to the slave. When the slave receives the start signal low level 0, the signal processing unit 12 starts to respond and outputs the second signal terminal signal as High level 1, after the master receives the response signal 1 from the slave, it starts to send the following data, and the slave signal processing unit 12 detects the signal of the second signal terminal signal to complete the display command from the master to the slave. When the welding torch 1 needs to send a signal to the welding machine 2, the host adopts a periodic scanning method to continuously read the signal of the first signal terminal IN. When the slave is ready to send a key signal to the host, the signal processing unit 12 passes the second signal The terminal signal sends out the signal 0xAA. After the host detects this command, it will receive the button signal sent by the slave for processing.

Referring to FIG. 3, the parameter input unit 11 includes a button circuit 111 and a switch detection circuit 112. The button circuit 111 is used to realize the setting of multiple welding parameters. The welding parameters can be selected through the left and right buttons, and the size of the parameters can be changed through the up and down buttons. The switch detection circuit 112 is used to detect whether the welding gun is switched on and in a working state at this time. 4, the display unit 14 is a liquid crystal display, and the liquid crystal display circuit includes multiple ports, where CLK is a clock signal, CS is a chip selection signal of the liquid crystal display, and MOSI is a communication signal between the signal processing unit 12 and the liquid crystal display.

5, the signal processing unit 12 is connected to the welding gun communication unit 14, the parameter input unit 11, and the display unit 13, where up, down, left, and right correspond to the upper, lower, left, and right on the remote control welding gun 1. Detection signal, torch is the detection signal of the welding gun 1 switch, signal is the signal to communicate with the welding machine 2, P2.10 is set as the input port, real-time detection of the start signal of the welding machine 2, P0.0 is set as the output port, when welding When the machine 2 sends out the response signal and the key signal, it is sent out from this output port. CLK is the clock signal to the liquid crystal display, CS is the chip selection signal of the liquid crystal display, MOSI is the communication signal with the liquid crystal display, and RES is the set signal.

The multifunctional electric welding machine of the present invention integrates various functions such as DC manual welding, argon arc welding, gas shielded welding and AC gas shielded welding, and can realize the switching of multiple welding methods through the switching of the control terminal, thereby ensuring the welding machine Smart integration. During the parameter setting process, the display unit 13 can visually observe the input parameter value, to ensure that the input value is correct, and to ensure the accuracy of the welding process. During the working process, the display unit 13 can display the actual welding current and voltage in real time, and can be adjusted immediately when the current and voltage deviate, so as to ensure strict control of the welding process parameters. In addition, the welding torch communication unit 14 and the welding machine 2 only provide data communication and power supply through a single switch line, which effectively simplifies the structure of the welding machine, makes the connection between the welding machine 2 and the welding torch 1 simpler, and reduces the installation cost of the welding machine. The cost.

The above-disclosed are only the embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be thought of by a person skilled in the art should fall into the protection scope of the present invention.

Claims (8)

A multifunctional electric welding machine, comprising a welding gun (1) and a welding machine (2). The welding gun (1) includes a nozzle and a circuit unit, characterized in that the circuit unit includes a parameter input unit (11) and a signal processing unit (12), a display unit (13) and a welding torch communication unit (14), the parameter input unit (11) is used to input welding parameters, the display unit (13) is used to display the welding parameters, and the welding torch communicates The unit (14) is used to connect with the welding machine (2) for data communication, and to supply power to the circuit unit, and the signal processing unit (12) is used to communicate with the parameter input unit (11) and the display unit (13). It is connected with the welding gun communication unit (14), receives and processes the signals transmitted from the parameter input unit (11) and the welding gun communication unit (14). The multifunctional electric welding machine according to claim 1, wherein the welding gun communication unit (14) and the welding machine (2) are connected through a first switch line (31) and a second switch line, and the first switch The wire (31) is used to provide data communication and power supply between the welding gun (1) and the welding machine (2), and the second switch wire is grounded. The multifunctional electric welding machine according to claim 2, characterized in that the welding machine includes a power source (21) and a welding machine communication unit (22), and the first switch line (31) includes a power source (21) connected to the The power supply branch line (311), and the communication branch line (312) connected with the welding machine communication unit (22). The multifunctional electric welding machine according to claim 2, characterized in that the welding gun communication unit (14) comprises a first signal terminal connected to the first switch line (31), and is connected to the signal processing unit ( 12) The second signal terminal connected, when the first switch line (31) is powered, the first signal terminal is at a high level, and the second signal terminal is at a low level, when the first switch line (31) When data communication is provided, the first signal terminal is low level, and the second signal terminal is high level. The multifunctional electric welding machine according to claim 1, wherein the welding gun communication unit (14) comprises a Zener diode, a resistor, and a diode, the anode of the Zener diode is grounded, and the cathode is connected to the first signal terminal , The anode of the diode is connected to one end of the resistor, and the other end of the resistor is connected to the second signal terminal. The multifunctional electric welding machine according to claim 5, wherein the welding gun communication unit (14) further comprises a first capacitor, a second capacitor, and a third capacitor, and one end of the first capacitor is connected to the second signal One end of the second capacitor is connected to the cathode of the diode and the other end is grounded. One end of the third capacitor is connected to the cathode of the Zener diode, and the other end is connected to the anode of the Zener diode and grounded. The multifunctional electric welding machine according to claim 1, wherein the display unit (13) is a liquid crystal display, and the liquid crystal display is used to display the welding current and the welding current when the welding gun communication unit (14) is powered. /Or voltage. The multifunctional electric welding machine according to claim 1, wherein the parameter input unit (11) comprises a button circuit (111) and a switch detection circuit (112).

Images