High-frequency arcing manual welding system and manual welding terminal

Abstract

A high-frequency arcing manual welding system comprises a welding power source and a manual welding terminal, the welding power source comprises a control module and a high-frequency circuit, and the manual welding terminal comprises a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage on the welding module through the control module, and arc striking is achieved. The high-frequency circuit is adopted for arc striking, so that the arc striking success rate is improved; the manual welding terminal adopts the remote control module to realize remote control of the manual welding terminal, and is more convenient. The device is simple in structure, low in cost and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of electric welding machines, specifically relating to a high-frequency arc-initiating manual welding system and a manual welding terminal. Background Technology

[0002] Manual welding machines generally use shielded metal arc welding (SMAW). The SMAW welding process involves using the workpiece to be welded as one electrode and the welding rod as the other electrode. When the two electrodes are close together, an electric arc is generated. The heat generated by the electric arc discharge melts the welding rod and the workpiece together and forms a weld after solidification, thus obtaining a strong joint.

[0003] Please see Figure 1 Existing shielded metal arc welding (SMAW) systems include a welding power source, a welding clamp assembly, and a grounding clamp assembly. The welding clamp assembly is used to hold the welding rod, and the grounding clamp assembly is connected to the workpiece. When the power source is turned on, an electric arc is generated through direct contact between the welding rod and the workpiece, allowing welding to proceed. This welding method is simple and convenient, but it has the following problems:

[0004] (1) In order to meet the welding requirements, the electrode coating (also known as coating) needs to be pressed onto the electrode core to ensure that the deposited metal has a certain chemical composition and properties. However, contact arc initiation requires knocking the electrode coating to expose the electrode core before arc initiation can begin. In actual operation, it is impossible to guarantee that the electrode coating can be knocked to expose the electrode core every time contact is made. Therefore, contact arc initiation carries the risk of arc initiation failure.

[0005] (2) Since contact arc ignition is initiated by contact between the workpiece and the welding rod, when welding narrow welds such as pipes, the welding clamp is energized when the power is on. If the arc is initiated by contact with other positions before reaching the position to be welded, it will cause sparking and threaten the personal safety of the operator.

[0006] (3) The control components are set at the arc welding power source. When the operator is far away from the welding power source or welding at a high place, the current and other parameters cannot be adjusted in time. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, one objective of this utility model is to provide a high-frequency arc-initiating manual welding system, and another objective is to provide a high-frequency arc-initiating manual welding terminal. To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] One aspect of this utility model provides a high-frequency arc-initiating manual welding system, including a welding power source and a manual welding terminal. The welding power source includes a control module and a high-frequency circuit, and the manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage in the welding module through the control module to achieve arc initiation.

[0009] Preferably, the welding power source further includes an arc-starting circuit, and the high-frequency circuit controls the arc-starting circuit to generate high-frequency high voltage in the welding module.

[0010] Preferably, the welding power supply includes a power supply module, and the remote control module controls the power supply module to supply power to the high-frequency circuit through the control module.

[0011] Preferably, the control module includes a main control circuit and a control circuit. The remote control module controls the power supply module to supply power to the high-frequency circuit through the control circuit, and controls the high-frequency circuit to generate high-frequency high voltage in the welding module through the main control circuit.

[0012] Preferably, the welding system further includes a high-frequency switching circuit, and the main control circuit controls the high-frequency circuit to generate high-frequency high voltage in the welding module through the high-frequency switching circuit.

[0013] Preferably, the main control circuit includes a microcontroller unit, a current regulation circuit, a switch control circuit, and a high-frequency control circuit. The current regulation circuit and the switch control circuit are respectively connected to the microcontroller unit and the remote control module, and the high-frequency control circuit is respectively connected to the high-frequency circuit and the microcontroller unit.

[0014] Preferably, the remote control module includes a switching circuit and a remote control adjustment circuit, wherein the switching circuit is connected to the remote adjustment and control circuit, and the remote control adjustment circuit is connected to the main control circuit.

[0015] Preferably, the high-frequency circuit includes a main transformer power supply winding, an RC step-down transformer, a step-up transformer, and an LC oscillation circuit. The input terminal of the main transformer winding is connected to the high-frequency switching circuit, and the output terminal is connected to the input terminal of the RC step-down transformer. The output terminal of the RC step-down transformer is connected to the input terminal of the step-up transformer, the output terminal of the step-up transformer is connected to the input terminal of the LC oscillation circuit, and the output terminal of the LC oscillation circuit is connected to the arc-starting circuit.

[0016] Preferably, the high-frequency switching circuit includes an amplifier circuit and an isolation circuit. The input terminal of the amplifier circuit is connected to the main control circuit, and the output terminal is connected to the input terminal of the isolation circuit. The output terminal of the isolation circuit is connected to the high-frequency circuit.

[0017] Preferably, the power supply module includes an AC input circuit, a rectifier and filter circuit, an inverter circuit, and an output rectifier circuit. The input terminal of the AC input circuit is connected to the mains power, and the output terminal is connected to the input terminal of the rectifier and filter circuit. The output terminal of the rectifier and filter circuit is connected to the input terminal of the inverter circuit. The output terminal of the inverter circuit is connected to the input terminal of the output rectifier circuit, and the output terminal of the output rectifier circuit is connected to the manual soldering terminal.

[0018] Preferably, the control circuit supplies power to the high-frequency circuit through the inverter circuit.

[0019] Preferably, the welding system further includes a fan for cooling the control module.

[0020] Preferably, the welding system further includes a thermistor for providing overheat protection for the welding system.

[0021] Another aspect of this utility model provides a high-frequency arc-initiating manual welding terminal, which is connected to the aforementioned welding power source. The manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage in the welding module to achieve arc initiation.

[0022] Preferably, the remote control module controls the current flow of the manual welding terminal through the control module.

[0023] Preferably, the remote control module also adjusts the current of the manual welding terminal through the control module.

[0024] This invention relates to a high-frequency arc-initiating manual welding system, comprising a welding power source and a manual welding terminal. The welding power source includes a control module and a high-frequency circuit. The manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage in the welding module, thereby achieving arc ignition. This invention utilizes a high-frequency circuit for arc ignition, effectively improving the success rate of arc ignition. The remote control module enables remote control of the manual welding terminal, making it more convenient to use. This invention features a simple structure, low cost, and easy operation, possessing high practical value and beneficial effects. Attached Figure Description

[0025] After reading the detailed embodiments of this utility model with reference to the accompanying drawings, the reader will gain a clearer understanding of all aspects of this utility model. Among them,

[0026] Figure 1 A structural diagram of a prior art manual welding system;

[0027] Figure 2 This is a structural diagram of a high-frequency arc-initiating manual welding system according to an embodiment of the present invention;

[0028] Figure 3 This is a structural diagram of a high-frequency arc-initiating manual welding system according to another embodiment of the present invention;

[0029] Figure 4 This is a structural diagram of a high-frequency arc-initiating manual welding system according to another embodiment of the present invention;

[0030] Figure 5 The circuit diagram of a high-frequency arc-initiating manual welding system according to another embodiment of the present invention is shown below.

[0031] Figure 6 This is a structural diagram of a high-frequency arc-initiating manual welding system according to another embodiment of the present invention;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1: Welding power source; 2: Manual welding terminal;

[0034] 11: Power supply module; 12: Control module; 13: Arc ignition circuit; 14: High-frequency circuit; 15: High-frequency switching circuit; 16: Cooling fan; 17: Thermistor; 18: Display module;

[0035] 111: AC input circuit; 112: Rectifier and filter circuit; 113: Inverter circuit; 114: Output rectifier circuit;

[0036] 21: Remote control module; 22: Welding module;

[0037] 121: Main control circuit; 122: Control circuit;

[0038] 1211: Microcontroller unit; 1212: Current regulation circuit; 1213: Switch control circuit; 1214: High-frequency control circuit;

[0039] 211: Switching circuit; 212: Remote adjustment and control circuit;

[0040] 151: Amplifier circuit; 152: Isolation circuit;

[0041] 141: Main transformer power supply winding; 142: RC step-down transformer; 143: Step-up transformer; 144: LC oscillation circuit. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0045] Example 1:

[0046] This embodiment provides a high-frequency arc-initiation manual welding system. Please refer to [link / reference]. Figure 2 The welding system includes a welding power source 1 and a manual welding terminal 2. The welding power source 1 includes a power supply module 11, a control module 12, an arc ignition circuit 13, and a high-frequency circuit 14. The manual welding terminal 2 includes a remote control module 21 and a welding module 22. Specifically, the remote control module 21 is connected to the control module 12 via a signal line. The control module 12 is connected to the power supply module 11 and the high-frequency circuit 14. The high-frequency circuit 14 is connected to the power supply module 11 via the arc ignition circuit 13. The welding module 22 is connected to the power supply module 11 via a main cable.

[0047] In this embodiment, the remote control module 21 controls the high-frequency circuit 14 to generate high-frequency high voltage in the welding module 22 through the control module 12, thereby achieving arc ignition. Specifically, the high-frequency circuit 14 controls the arc ignition circuit 13 to generate high-frequency high voltage in the welding module 22. Specifically, the welding module 22 includes a welding clamp, and the welding power supply 1 includes a grounding clamp. The welding clamp is used to fix the welding rod, and the grounding clamp is used to contact the workpiece. Specifically, the high-frequency circuit 14 controls the arc ignition circuit 13 to generate high-frequency high voltage in the welding clamp, that is, to generate high-frequency high voltage between the welding rod and the workpiece, breaking down the air or welding rod residue to ignite the arc, thereby achieving arc ignition.

[0048] In this embodiment, the remote control module 21 controls the power supply module 11 to supply power to the high-frequency circuit 14 through the control module 12. Specifically, when the high-frequency circuit 14 is powered, it starts working and controls the arc-starting circuit 13 to generate high-frequency high voltage at the output terminal of the power supply module 11. Since the welding clamp is connected to the output terminal of the power supply module 11, high-frequency high voltage is generated between the welding rod and the workpiece, thus realizing arc ignition, that is, completing high-frequency arc ignition.

[0049] In existing technologies, due to the high power and large size of the welding power source 1, it is generally located at a remote location, and the manual welding terminal 2 is controlled by the control module 12. In this embodiment, the remote control module 21 is provided on the side of the manual welding terminal. The remote control module 21 can start high-frequency arc ignition, control the on / off state of the manual welding terminal 2, and adjust the current of the manual welding terminal 2 on the side of the manual welding terminal. Compared with the prior art of controlling the manual welding terminal on the welding power source side, the technical solution of this embodiment is more convenient to operate.

[0050] Example 2:

[0051] This embodiment provides a high-frequency arc-initiation manual welding system. Please refer to [link / reference]. Figure 3 The welding system includes a welding power source 1 and a manual welding terminal 2. The welding power source 1 includes a power supply module 11, a main control circuit 121, a control circuit 122, an arc ignition circuit 13, a high-frequency circuit 14, and a high-frequency switching circuit 15. The manual welding terminal 2 includes a remote control module 21 and a welding module 22.

[0052] In this embodiment, the remote control module 21 is connected to the main control circuit 121, the main control circuit 121 is connected to the control circuit 122, the control circuit 122 is connected to the power supply module 11, and the main control circuit 121 is connected to the high-frequency circuit 14 through the high-frequency switching circuit 15. The arc-starting circuit 13 is connected to the high-frequency circuit 14, and the arc-starting circuit 13 is also connected to the power supply module 11. The welding module 22 is connected to the power supply module 11.

[0053] In this embodiment, the remote control module 21 controls the power supply module 11 to supply power to the high-frequency circuit 14 through the control circuit 122, and controls the high-frequency circuit 14 to generate high-frequency high voltage in the welding module 22 through the main control circuit 121. Specifically, the main control circuit 121 controls the high-frequency circuit 14 through the high-frequency switching circuit 15, thereby controlling the arc ignition circuit 13 to generate high-frequency high voltage at the output terminal of the power supply module 11, thereby generating high-frequency high voltage between the welding clamp and the workpiece in the welding module 22.

[0054] Example 3:

[0055] This embodiment provides a high-frequency arc-initiation manual welding system. Please refer to [link / reference]. Figure 4 The structural diagram of the welding system is shown below. Figure 5 This is the circuit diagram of the welding system.

[0056] In this embodiment, the welding system includes a welding power source 1 and a manual welding terminal 2. The welding power source 1 includes an AC input circuit 111, a rectifier and filter circuit 112, an inverter circuit 113, an output rectifier circuit 114, a main control circuit 121, a control circuit 122, an arc ignition circuit 13, a high-frequency circuit 14, a high-frequency switching circuit 15, a cooling fan 16, a thermistor 17, and a display module 18. The manual welding terminal 2 includes a remote control module 21 and a welding module 22.

[0057] In this embodiment, the input terminal of the AC input circuit 111 is connected to the mains power, and the output terminal is connected to the input terminal of the rectifier and filter circuit 112. The output terminal of the rectifier and filter circuit 112 is connected to the input terminal of the inverter circuit 113, and the output terminal of the inverter circuit 113 is connected to the input terminal of the output rectifier circuit 114. The output terminal of the output rectifier circuit 114 is connected to the welding module 22. The remote control module 21 is connected to the main control circuit 121 via a signal line, specifically a five-core ribbon cable. The main control circuit 121 is connected to the control circuit 122, and the control circuit 122 is connected to the output terminal of the inverter circuit 113. The main control circuit 121 is connected to the high-frequency switching circuit 15, the high-frequency switching circuit 15 is connected to the high-frequency circuit 14, the high-frequency circuit 14 is connected to the inverter circuit 113, and the arc-starting circuit 13 is connected to the output terminal of the output rectifier circuit 114. The cooling fan 16, the thermistor 17, and the display module 18 are respectively connected to the main control circuit 121.

[0058] In this embodiment, the AC input circuit 111 consists of a power switch, an EMI circuit, and a soft-start circuit. When the power plug is connected to mains power, the AC power is sent to the EMI circuit via the power switch. The EMI circuit filters out electromagnetic interference from the device itself, as well as electromagnetic interference from the device to the external power grid. The AC power passing through the EMI circuit is then sent to the rectifier and filter circuit 112 via the soft-start circuit. The soft-start circuit reduces the impact on the power grid caused by excessive starting circuitry during startup.

[0059] In this embodiment, the rectifier-filter circuit 112 consists of a rectifier bridge and an electrolytic capacitor. When AC power is input to the input terminal of the rectifier bridge, the unidirectional conductivity of the rectifier diodes in the rectifier bridge results in a DC power output with relatively large ripple. The rectified DC power is filtered by a large-capacity electrolytic capacitor, and a smooth DC power output is sent to the inverter circuit 113 to power the welding system.

[0060] In this embodiment, the inverter circuit 113 consists of a power IGBT, an IGBT spike absorption circuit, a clamping diode, and a main transformer. The IGBT operates in a 50-70kHz switching state, generating a square wave voltage of approximately +300V on the primary side of the main transformer. The secondary side of the main transformer senses the square wave, and the amplitude of the square wave output from the secondary side is related to the turns ratio of the main transformer.

[0061] In this embodiment, the output rectifier circuit 114 consists of a fast recovery rectifier diode, a fast recovery freewheeling diode, a freewheeling inductor, a spike absorption circuit, and a filter capacitor. The high-frequency square wave output from the secondary winding of the main transformer of the inverter circuit 113 is rectified by the output rectifier circuit 114 to output a relatively smooth DC current.

[0062] In this embodiment, the cooling fan 16 is used to dissipate heat from the control module 12. Specifically, the control module 12 is equipped with two cooling fans 16, which are controlled by the control module 12. Specifically, when the welding system is detected to be not working, the control module 12 controls the cooling fan 16 to not work; when the welding system is detected to be working, the control module 12 controls the cooling fan 16 to start working.

[0063] In this embodiment, the thermistor 17 is used to provide overheat protection for the welding system. Specifically, the thermistor 17 is a PTC thermistor, installed on the heat sink of the output rectifier circuit 114. When the manual welding terminal 2 is working, the temperature of the heat sink will rise, and the resistance of the thermistor 17 will change. The voltage sent to the control module 12 will also change. When the overheat protection setting value is reached, the main control circuit 121 shuts down the output of the inverter circuit 113 through the control circuit 122, the welding system stops working, and a fault alarm is issued through the display module 18.

[0064] In this embodiment, the arc-starting circuit 13 includes an arc-starting inductor. The high-frequency high voltage output of the high-frequency circuit 14 is sent to the primary side of the arc-starting inductor, and the secondary side of the arc-starting inductor is sent to the input terminal OUT- of the output rectifier circuit 114 for high-frequency arc starting. Specifically, the welding clamp of the welding module 22 is connected to the input terminal OUT- of the output rectifier circuit 114, thereby generating a high-frequency high voltage in the welding clamp, that is, generating a high-frequency high voltage between the welding rod and the workpiece, which breaks down the air or the welding rod.

[0065] In this embodiment, the remote control module 21 includes a manual operation switch, through which manual operation information is sent to the main control circuit 121.

[0066] In this embodiment, the control module 12 further includes an operation panel through which a high-frequency arc ignition mode can be selected.

[0067] Example 4:

[0068] This embodiment provides a high-frequency arc-initiating manual welding system, including a welding power source 1 and a manual welding terminal 2. The welding power source 1 includes a power supply module 11, a main control circuit 121, a control circuit 122, an arc-initiating circuit 13, a high-frequency circuit 14, and a high-frequency switching circuit 15. The manual welding terminal 2 includes a remote control module 21 and a welding module 22. For the specific connections of each circuit / module of the welding power source 1 and the manual welding terminal 2, please refer to Embodiment 2, which will not be repeated here. For the structural diagrams of the main control circuit 121, the remote control module 21, the high-frequency circuit 14, and the high-frequency switching circuit 15 described in this embodiment, please refer to... Figure 6 .

[0069] In this embodiment, the main control circuit 121 includes a microcontroller unit 1211 (MCU), a current regulation circuit 1212, a switch control circuit 1213, and a high-frequency control circuit 1214. The microcontroller unit 1211 is used to receive signals from the remote control module 21, control the current regulation circuit 1212 to regulate the current of the manual welding terminal 2, control the switch control circuit 1213 to control the opening and closing of the manual welding terminal 2, and control the high-frequency control circuit 1214 to control the high-frequency circuit 14 to start high-frequency arc ignition through the high-frequency switch circuit 15.

[0070] In this embodiment, the remote control module 21 includes a switch circuit 211 and a remote adjustment control circuit 212. The switch circuit 211 includes a manual operation switch for converting manual operation into a manual operation signal. Specifically, the operator can operate the manual operation switch by pressing it or by rotating it. The switch circuit 211 sends the manual operation signal to the main control circuit 121 through the remote adjustment control circuit 212. Specifically, the manual operation signal includes a switch signal and a current adjustment signal. The operator presses the manual operation switch to send the switch signal, and the operator rotates the manual operation switch to send the current adjustment signal. Specifically, clockwise rotation and counterclockwise rotation can be used to distinguish between current increase and current decrease current adjustment signals. Specifically, the remote adjustment and control circuit 212 is connected to the main control circuit 121 via a five-core ribbon cable. Specifically, the first core of the five-core ribbon cable is used to supply power to the remote control module 21, the second core is used for grounding, the third core is used to transmit the switching signal, and the fourth and fifth cores are used to transmit the current adjustment signal, wherein the fourth core is used to transmit the current increase signal and the fifth core is used to transmit the current decrease signal.

[0071] In this embodiment, the high-frequency circuit 14 includes a main transformer power supply winding 141, an RC step-down transformer 142, a step-up transformer 143, and an LC oscillation circuit 144. When the main control circuit 121 receives the manual operation signal sent by the remote control module 21 and identifies the manual operation signal as a switch signal, the control circuit 122 controls the secondary winding of the main transformer of the inverter circuit 113 to output voltage to the main transformer power supply winding 141 of the high-frequency circuit 14. After passing through the RC step-down transformer 142 and the step-up transformer 143, the voltage is increased and then passes through the LC oscillation circuit 144 to the primary side of the arc-starting inductor of the arc-starting circuit 13. The secondary winding of the arc-starting inductor is then boosted to the output terminal of the output rectifier circuit 114.

[0072] In this embodiment, the high-frequency switching circuit 15 includes an amplifier circuit 151 and an isolation circuit 152. The amplifier circuit 151 is used to amplify the control information sent by the high-frequency control circuit 1214, and the isolation circuit 152 is used to isolate the high-frequency control circuit 1214 from the high-frequency circuit 14 to ensure the safety of the main control circuit 121.

[0073] In this embodiment, the current regulation circuit 1212 and the switch control circuit 1213 are respectively connected to the microcontroller unit 1211 and the remote adjustment control circuit 212; the high-frequency control circuit 1214 is connected to the amplifier circuit 151; the switch circuit 211 is connected to the remote adjustment control circuit 212; the input terminal of the main transformer power supply winding 141 is connected to the isolation circuit 152, and the output terminal is connected to the input terminal of the RC step-down transformer 142; the output terminal of the RC step-down transformer 142 is connected to the input terminal of the step-up transformer 143; the output terminal of the step-up transformer 143 is connected to the input terminal of the LC oscillation circuit 144; the output terminal of the LC oscillation circuit 144 is connected to the arc-starting circuit 13; and the amplifier circuit 151 is connected to the isolation circuit 152.

[0074] Example 5:

[0075] This embodiment explains the working principle of the high-frequency arc-initiating manual welding system to further illustrate the technical solution of this utility model. In this embodiment, the structure of the high-frequency arc-initiating manual welding system is as follows: Figure 4 As shown, please refer to the circuit diagrams of the remote control module 21, main control circuit 121, high-frequency circuit 14, and high-frequency switching circuit 15. Figure 6 The connection relationships of the various circuits / modules of the welding system are described in Embodiments 3 and 4, and will not be repeated here. The working process of the high-frequency arc-initiating manual welding system is as follows:

[0076] I. Switching and Current Adjustment of Manual Welding Terminals

[0077] (1) The control module 12 supplies power to the remote control module 21 through a five-core ribbon cable.

[0078] (2) Press the manual operation switch of the remote control module 21 to send a switch signal to the main control circuit 121 through the five-core ribbon cable. The micro control unit 1211 determines whether the switch of the manual welding terminal 2 is closed based on the switch signal.

[0079] (3) Rotate the manual operation switch of the remote control module 21 to send a current adjustment signal to the main control circuit 121 through the five-core ribbon cable. The micro control unit 1211 determines the rotation of the manual operation switch according to the current adjustment signal, adjusts the current of the manual welding terminal 2 through the control circuit 122, and displays the current change through the display module 18.

[0080] II. High-frequency arc initiation

[0081] (1) Select the HF (high frequency arc initiation) mode on the operation panel of the control module 12.

[0082] (2) Press the manual operation switch of the remote control module 21, and the micro control unit 1211 determines whether the switch of the manual welding terminal 2 is closed.

[0083] (3) The microcontroller unit 1211 controls the IGBT of the inverter circuit 113 to operate in a high-frequency switching state through the control circuit 122, and the main transformer winding of the inverter circuit 113 supplies power to the high-frequency circuit 14.

[0084] (4) The microcontroller unit 1211 sends a control signal to the high-frequency circuit 14 through the high-frequency switching circuit 15 to control the pulse voltage generated by the primary side of the arc-starting inductor of the arc-starting circuit 13. The secondary side of the arc-starting inductor is output to the output terminal OUT- of the output rectifier circuit 114 for high-frequency arc starting. Specifically, the welding clamp of the welding module 22 is connected to the output terminal OUT- of the output rectifier circuit 114, thereby generating high-frequency high voltage in the welding clamp, that is, generating high-frequency high voltage between the welding rod and the workpiece, breaking down the air or welding rod residue to ignite the arc, thereby realizing arc starting.

[0085] (5) After successful arc ignition, the welding system can start welding. The welding system can be controlled by the manual operation switch. Specifically, the manual operation switch has two working modes: 2T mode and 4T mode. In 2T mode, press and hold the switch to work and release the switch to stop working. In 4T mode, press the switch to start, press the switch to work, press the switch to stop, and press the switch to turn off.

[0086] Example 6:

[0087] This embodiment provides a high-frequency arc-initiating manual welding terminal 2, which is connected to the welding power supply 1 as described above. The manual welding terminal includes a remote control module 21 and a welding module 22. The remote control module 21 controls the high-frequency circuit 14 to generate high-frequency high voltage in the welding module 22 through the control module 12 to realize arc initiation.

[0088] In this embodiment, the remote control module 21 controls the current switching of the manual welding terminal 2 through the control module 12.

[0089] In this embodiment, the remote control module 21 also adjusts the current of the manual welding terminal 2 through the control module 12.

[0090] This invention relates to a high-frequency arc-initiating manual welding system, comprising a welding power source and a manual welding terminal. The welding power source includes a control module and a high-frequency circuit. The manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage in the welding module, thereby achieving arc ignition. This invention utilizes a high-frequency circuit for arc ignition, effectively improving the success rate of arc ignition. The remote control module enables remote control of the manual welding terminal, making it more convenient to use. This invention features a simple structure, low cost, and easy operation, possessing high practical value and beneficial effects.

[0091] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. The embodiments exemplified by this utility model cannot exhaustively describe all implementation methods. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model. All documents mentioned in this utility model are incorporated herein by reference as if they were individually incorporated by reference.

Claims

1. A high-frequency arc-initiation manual welding system, characterized in that, The welding system includes a welding power source and a manual welding terminal. The welding power source includes a control module and a high-frequency circuit. The manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate a high-frequency high voltage in the welding module to achieve arc ignition. The remote control module includes a switching circuit and a remote adjustment control circuit. The remote adjustment control circuit is connected to the control module via a five-core ribbon cable. The first core of the five-core ribbon cable is used to power the remote control module, the second core is used for grounding, the third core is used to transmit switching signals, and the fourth and fifth cores are used to transmit current adjustment signals.

2. The high-frequency arc-initiation manual welding system according to claim 1, characterized in that, The welding power source also includes an arc-starting circuit, and the high-frequency circuit controls the arc-starting circuit to generate high-frequency high voltage in the welding module.

3. The high-frequency arc-initiation manual welding system according to claim 2, characterized in that, The welding power supply includes a power supply module, and the remote control module controls the power supply module to supply power to the high-frequency circuit through the control module.

4. The high-frequency arc-initiation manual welding system according to claim 3, characterized in that, The control module includes a main control circuit and a control circuit. The remote control module controls the power supply module to supply power to the high-frequency circuit through the control circuit, and controls the high-frequency circuit to generate high-frequency high voltage in the welding module through the main control circuit.

5. The high-frequency arc-initiation manual welding system according to claim 4, characterized in that, The welding system also includes a high-frequency switching circuit, and the main control circuit controls the high-frequency circuit to generate high-frequency high voltage in the welding module through the high-frequency switching circuit.

6. The high-frequency arc-initiation manual welding system according to claim 5, characterized in that, The main control circuit includes a microcontroller unit, a current regulation circuit, a switch control circuit, and a high-frequency control circuit. The current regulation circuit and the switch control circuit are respectively connected to the microcontroller unit and the remote control module, and the high-frequency control circuit is respectively connected to the high-frequency circuit and the microcontroller unit.

7. The high-frequency arc-initiation manual welding system according to claim 5, characterized in that, The switching circuit is connected to the remote adjustment and control circuit, and the remote adjustment and control circuit is connected to the main control circuit.

8. The high-frequency arc-initiation manual welding system according to claim 5, characterized in that, The high-frequency circuit includes a main transformer power supply winding, an RC step-down transformer, a step-up transformer, and an LC oscillation circuit. The input terminal of the main transformer power supply winding is connected to the high-frequency switching circuit, and the output terminal is connected to the input terminal of the RC step-down transformer. The output terminal of the RC step-down transformer is connected to the input terminal of the step-up transformer, the output terminal of the step-up transformer is connected to the input terminal of the LC oscillation circuit, and the output terminal of the LC oscillation circuit is connected to the arc-starting circuit.

9. The high-frequency arc-initiation manual welding system according to claim 5, characterized in that, The high-frequency switching circuit includes an amplifier circuit and an isolation circuit. The input terminal of the amplifier circuit is connected to the main control circuit, and the output terminal is connected to the input terminal of the isolation circuit. The output terminal of the isolation circuit is connected to the high-frequency circuit.

10. The high-frequency arc-initiation manual welding system according to claim 3, characterized in that, The power supply module includes an AC input circuit, a rectifier and filter circuit, an inverter circuit, and an output rectifier circuit. The input terminal of the AC input circuit is connected to the mains power, and the output terminal is connected to the input terminal of the rectifier and filter circuit. The output terminal of the rectifier and filter circuit is connected to the input terminal of the inverter circuit. The output terminal of the inverter circuit is connected to the input terminal of the output rectifier circuit, and the output terminal of the output rectifier circuit is connected to the manual soldering terminal.

11. The high-frequency arc-initiation manual welding system according to claim 10, characterized in that, The control circuit supplies power to the high-frequency circuit through the inverter circuit.

12. The high-frequency arc-initiation manual welding system according to claim 1, characterized in that, The welding system also includes a fan for cooling the control module.

13. The high-frequency arc-initiation manual welding system according to claim 1, characterized in that, The welding system also includes a thermistor for providing overheat protection for the welding system.

14. A high-frequency arc-initiating manual welding terminal, characterized in that, The manual welding terminal is connected to the welding power source according to any one of claims 1 to 13. The manual welding terminal includes a remote control module and a welding module. The remote control module controls the high-frequency circuit to generate high-frequency high voltage in the welding module to achieve arc ignition.

15. The high-frequency arc-initiating manual welding terminal according to claim 14, characterized in that, The remote control module controls the current flow of the manual welding terminal through the control module.

16. The high-frequency arc-initiating manual welding terminal according to claim 14, characterized in that, The remote control module also adjusts the current of the manual welding terminal.

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