Arc striking device

Abstract

The invention provides an arc striking device comprising an arc striking device input end connected to an electric energy supply end which is an output end of a welding and cutting device or an output end of a power supply device; the arc striking equipment output end is configured to output high-frequency arc striking voltage outwards; the control system comprises a power supply circuit, a control circuit, a high-frequency circuit and an arc ignition inductor; wherein the power supply circuit is configured to supply power to a power requiring circuit in the arc striking equipment based on electric energy input by the input end of the arc striking equipment; the high-frequency circuit is configured to generate a high-frequency voltage electric signal based on an arc striking starting signal of the control circuit; and the arc ignition inductor is configured to amplify the high-frequency voltage electric signal and then output high-frequency arc ignition voltage to the output end of the arc ignition equipment. According to the arc striking equipment, the non-contact high-frequency arc striking function can be added to welding and cutting equipment which does not support non-contact arc striking originally, the welding and cutting equipment is easy to upgrade, and the cost is low.

Description

Technical Field

[0001] The present application relates to the field of welding and cutting technology, and in particular to an arc striking device. Background Art

[0002] Arc striking refers to the process of establishing an arc between the electrode and the workpiece in a certain way during welding or plasma cutting operations. Currently, among traditional welding and cutting equipment, argon arc welding and plasma cutting equipment use non-contact high-frequency arc striking, while the other two welding machines, arc welding with sticks and gas metal arc welding, usually use contact short-circuit arc striking. Compared with the non-contact high-frequency arc striking, the contact short-circuit arc striking has a low arc striking success rate. At the same time, due to the large current generated during the short circuit, it will cause large spatter, and the arc striking process is not friendly to the operator.

[0003] There are still a large number of traditional welding machines on the market that do not support non-contact arc ignition. If you need to obtain a welding machine that supports non-contact arc ignition, you need to completely replace the welding and cutting equipment. The product upgrade cost is very high, and it is also a huge waste for the existing welding machines that do not support non-contact arc ignition.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In response to the problems in the prior art, the purpose of the present application is to provide an arc striking device, which can add a non-contact high-frequency arc striking function to welding and cutting equipment that originally does not support non-contact arc striking, making the upgrade of the welding and cutting equipment simple and low-cost.

[0006] The present application provides an arc striking device, comprising:

[0007] The input end of the arc striking device is connected to the power supply end, which is the output end of the welding and cutting equipment or the output end of the power supply device;

[0008] An arc striking device output terminal configured to output a high-frequency arc striking voltage externally; and

[0009] Control system, including power supply circuit, control circuit, high frequency circuit and arc inductor;

[0010] Among them, the power supply circuit is configured to supply power to the power-requiring circuit in the arc striking equipment based on the electric energy input from the input end of the arc striking equipment; the high-frequency circuit is configured to generate a high-frequency voltage electrical signal based on the arc striking start signal of the control circuit; the arc striking inductor is configured to amplify the high-frequency voltage electrical signal and then output a high-frequency arc striking voltage to the output end of the arc striking equipment.

[0011] In some embodiments, the control system also includes a constant current circuit, the control circuit is further configured to generate a constant current control signal based on a current setting value, and the constant current circuit is configured to control the output current at the output end of the arc striking device to be constant according to the constant current control signal.

[0012] In some embodiments, the output end of the arc striking device includes a first output end of the arc striking device and a second output end of the arc striking device, the output end of the constant current circuit is connected to the first output end of the arc striking device, and the output end of the arc striking inductor is connected to the second output end of the arc striking device.

[0013] In some embodiments, the control system further includes an absorption circuit.

[0014] In some embodiments, the system further includes a current setting value input module configured to receive a current setting value and input the current setting value into the control circuit.

[0015] In some embodiments, the arc-striking device input end includes a first arc-striking device input end and a second arc-striking device input end, and the first arc-striking device input end and the second arc-striking device input end respectively use quick plugs.

[0016] In some embodiments, the output end of the arc striking device includes a first output end of the arc striking device and a second output end of the arc striking device, one of the first output end of the arc striking device and the second output end of the arc striking device is provided with a grounding clamp assembly, and the other is provided with a welding clamp assembly.

[0017] In some embodiments, the arc-striking device output end includes a first arc-striking device output end and a second arc-striking device output end, one of which is provided with a grounding clamp assembly, and the other is provided with a welding gun assembly.

[0018] In some embodiments, an arc starting switch is further included, and the control circuit is configured to output an arc starting signal to the high-frequency circuit in response to a starting operation of the arc starting switch.

[0019] The arc striking device provided in this application has the following advantages:

[0020] The present application provides an arc-starting device for generating a high-frequency arc-starting voltage. When in use, it is directly connected to the output end of the welding and cutting equipment, and the non-contact high-frequency arc-starting function can be added to the welding and cutting equipment that does not originally support non-contact arc-starting. The staff can implement the non-contact high-frequency arc-starting method to perform welding arc-starting operations, effectively improving the success rate of welding arc-starting. The arc-starting process is smooth, and the operating environment of the staff can be effectively improved. By adopting the arc-starting device, it is simple to upgrade the welding and cutting equipment. The arc-starting device has a simple structure, small size, low cost, and is easy to carry. Only the cost of the arc-starting device is required to upgrade the welding and cutting equipment that does not originally support non-contact arc-starting to a welding and cutting equipment with a non-contact arc-starting function. Compared with purchasing a new welding and cutting equipment with a high-frequency arc-starting function, the upgrade cost of the existing welding and cutting equipment is greatly reduced.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of an arc striking device according to an embodiment of the present application;

[0024] Figure 2 It is a structural block diagram of a control system of an arc striking device according to an embodiment of the present application;

[0025] Figure 3 This is a structural block diagram of a control system of an arc striking device according to an embodiment of the present application in which an absorption circuit is added;

[0026] Figure 4 is a structural schematic diagram of an arc striking device according to another embodiment of the present application;

[0027] Figure 5 It is a structural block diagram of a control system of an arc striking device according to another embodiment of the present application.

[0028] Reference numerals:

[0029] 1-arc striking device input end; 11-arc striking device first input end; 12-arc striking device second input end; 2-arc striking device output end; 21-arc striking device first output end; 22-arc striking device second output end; 31-welding gun assembly; 32-grounding clamp assembly;

[0030] 41-housing; 42-arc starting switch; 43-current setting value input module;

[0031] 610-power supply circuit; 620-control circuit; 630-high frequency circuit; 640-arc inductor; 650-absorption circuit; 660-constant current circuit. DETAILED DESCRIPTION

[0032] The example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present application will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe different exemplary features and elements of the present application, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of the present application. Although "first" or "second" etc. are used in this specification to represent certain features, they are only used to represent the function, and are not used as a limitation on the number and importance of specific features.

[0033] In order to solve the technical problems in the prior art that some welding and cutting equipment do not support the non-contact high-frequency arc ignition function, and need to use contact arc ignition, which results in poor arc ignition effect, and that it takes a lot of cost to upgrade the existing welding and cutting equipment, the embodiment of the present application provides an arc ignition device, which can be used in conjunction with welding and cutting equipment that does not support non-contact high-frequency arc ignition, so as to achieve the upgrade of the existing welding and cutting equipment that does not support the non-contact high-frequency arc ignition function at a lower cost, effectively improve the arc ignition effect, improve the welding arc ignition success rate, make the arc ignition process smooth, and effectively improve the operating environment of the staff.

[0034] like Figure 1As shown, an embodiment of the present application provides an arc-starting device, including an arc-starting device input terminal 1, an arc-starting device output terminal 2 and a shell 41. A control system is arranged in the shell 41. The arc-starting device input terminal 1 is connected to the power supply terminal, which is the output terminal of the welding and cutting equipment. The welding and cutting equipment refers to welding equipment or cutting equipment that does not support non-contact high-frequency arc-starting, such as a stick arc welder or a gas shielded arc welder. The terminal structure of the arc-starting device input terminal 1 can be adaptively adjusted according to the output terminal type of different welding and cutting equipment to be suitable for various welding and cutting equipment. When the power supply terminal is the output terminal of the welding and cutting equipment, the arc-starting device is connected between the welding and cutting equipment and the workpiece to be welded and cut, and no additional power supply is required during the arc-starting process. After the high-frequency arc-starting is completed, the staff can remove the arc-starting device from the welding and cutting equipment and continue to use the welding and cutting equipment to perform normal welding and cutting operations. Figure 1 The shape and structure of the arc striking device shown in the figure are only examples and are not intended to limit the scope of protection of the present application. The housing 41 of the arc striking device can be made very small, for example, in the form of an arc striking box, so that the overall arc striking device has a small volume and weight, and is convenient to carry and use.

[0035] In another embodiment, the power output end may also be the output end of a power supply device. The power supply device may be, for example, an AC mains device or a battery pack that provides power. The arc striking device input end 1 may also directly input power from an AC mains or a battery pack. When in use, the staff may first use the arc striking device to perform non-contact high-frequency arc striking, and then use the welding and cutting device to perform normal welding and cutting operations. The following description is made by taking the arc striking device input end connected to the output end of the welding and cutting device as an example, but this is not intended to limit the scope of protection of this application.

[0036] like Figure 1As shown, the arc-striking device input end 1 is provided with a first arc-striking device input end 11 and a second arc-striking device input end 12, which are respectively connected to the positive output end and the negative output end of the welding and cutting device. The first arc-striking device input end 11 and the second arc-striking device input end 12 respectively adopt quick plugs, which can be quickly connected to the quick-insertion connector of the power supply end and quickly removed from the quick-insertion connector of the power supply end. The arc-striking device output end 2 is configured to output a high-frequency arc-striking voltage to the outside. The arc-striking device output end 2 includes a first arc-striking device output end 21 and a second arc-striking device output end 22. In one embodiment, one of the first arc-striking device output end 21 and the second arc-striking device output end 22 is provided with a grounding clamp assembly 32, and the other is provided with a welding gun assembly 31. The welding gun assembly 31 can be optionally a argon arc welding gun assembly 31. In another embodiment, one of the first arc-striking device output end 21 and the second arc-striking device output end 22 is provided with a grounding clamp assembly 32, and the other is provided with a welding clamp assembly. In this embodiment, the first output end 21 of the arc striking device is a positive output end, and is provided with a welding gun assembly 31 and a welding clamp assembly, and the second output end 22 of the arc striking device is a negative output end, and is provided with a grounding clamp assembly 32. The welding gun assembly 31 and the welding clamp assembly can be configured to be detachably installed at the output end 2 of the arc striking device, and corresponding assemblies can be selected for installation according to different welding types.

[0037] like Figure 2 As shown, the control system includes a power supply circuit 610, a control circuit 620, a high-frequency circuit 630 and an arc-striking inductor 640. Among them, the two input ends of the power supply circuit 610 are respectively connected to the first input end 11 of the arc-striking device and the second input end 12 of the arc-striking device. The power supply circuit 610 is configured to supply power to the power-demanding circuit in the arc-striking device based on the electric energy input from the input end 1 of the arc-striking device. The power supply circuit 610 can perform AC-DC conversion and / or voltage conversion on the input electric energy to convert it into electric energy that can supply power to the power-demanding circuit. The power-demanding circuit is a circuit in the control system that requires electric energy input to work, and at least includes a control circuit 620 and a high-frequency circuit 630. The two output ends of the power supply circuit 610 are respectively input to the control circuit 620 and the high-frequency circuit 630.

[0038] The control circuit 620 is configured to generate an arc starting signal and output it to the high frequency circuit 630. Figure 1As shown, the arc striking device also includes an arc striking start switch 42, which is arranged on the surface of the shell 41 of the arc striking device, for example, it is arranged in the form of a switching switch or a button. The control circuit 620 is configured to output an arc striking start signal to the high-frequency circuit 630 in response to the start operation of the arc striking start switch 42. After receiving the arc striking start signal, the high-frequency circuit 630 generates a high-frequency voltage electrical signal and outputs it to the arc striking inductor 640. The arc striking inductor 640 is configured to amplify the high-frequency voltage electrical signal and output a high-frequency arc striking voltage to the output terminal 2 of the arc striking device, and the output terminal 2 of the arc striking device outputs the high-frequency arc striking voltage to perform the arc striking operation. The arc striking inductor 640, for example, includes two-stage coils with different numbers of turns, and the high-frequency voltage electrical signal is amplified into a high-frequency arc striking voltage that can meet the needs of high-frequency arc striking through the two-stage coils. As shown Figure 3 As shown, one output of the power supply circuit 610 is connected to the first output terminal 21 of the arc striking device, and the output of the arc striking inductor 640 is connected to the second output terminal 22 of the arc striking device, and the electric energy is output to the welding gun assembly 31 or the welding clamp assembly. In another embodiment, one output of the power supply circuit 610 can also be connected to the second output terminal 22 of the arc striking device, and the output of the arc striking inductor 640 can be connected to the first output terminal 21 of the arc striking device.

[0039] like Figure 3 As shown, in this embodiment, the control system further includes an absorption circuit 650, which is connected between the power supply circuit 610 and the arc-striking inductor 640. The absorption circuit 650 is used to absorb the high-frequency voltage of the arc-striking inductor 640 to prevent the high-frequency and high-voltage circuit of the arc-striking inductor 640 from affecting the internal circuit of the arc-striking device. The absorption circuit 650 can, for example, adopt an LC type high-frequency absorption circuit, an RC type high-frequency absorption circuit, or an RL type high-frequency absorption circuit, and the specific type and parameters can be selected according to the actual working requirements of the arc-striking device.

[0040] When the arc striking device is used for high-frequency arc striking operation, the staff connects the first input terminal 11 and the second input terminal 12 of the arc striking device to the output terminal of the welding and cutting device, and uses the energy between the positive and negative output terminals of the welding and cutting device as the power supply energy of the arc striking device. The control circuit 620 starts to wait for the operation signal of the arc striking start switch 42. After the staff operates the arc striking start switch 42, the control circuit 620 immediately generates an arc striking start signal to the high-frequency circuit 630. The high-frequency circuit 630 works and oscillates to generate a high-frequency high-voltage electrical signal. This high-frequency voltage electrical signal is transmitted to the arc striking inductor 640. After further coupling and amplification by the arc striking inductor 640, the high-frequency arc striking voltage is output to the first output terminal 21 and the second output terminal 22 of the arc striking device to perform the high-frequency arc striking operation. In this process, the absorption circuit 650 absorbs the high-frequency high-voltage signal generated by the arc striking inductor 640 to prevent the high-frequency high-voltage signal from interfering with other circuits inside the arc striking device. After arc striking is successful, the staff turns off the arc striking start switch 42, and the control circuit 620 sends an arc striking stop signal to the high-frequency circuit 630, at which time the operation of the high-frequency circuit 630 is cut off and the output of the high-frequency voltage electrical signal is stopped.

[0041] Figure 4 It is a structural schematic diagram of an arc striking device according to another embodiment of the present application. Figure 5 is a structural block diagram of a control system for an arc striking device according to another embodiment of the present application. Figure 3 The main difference between the embodiment in FIG. 6 is that the control system further includes a constant current circuit 660. The control circuit 620 is further configured to generate a constant current control signal based on the current setting value, and the constant current circuit 660 is configured to control the output current of the arc striking device output terminal 2 to be constant according to the constant current control signal, and stabilize the output current of the arc striking device output terminal 2 at the current setting value. Figure 5As shown, the output end of the constant current circuit 660 is connected to the first output end 21 of the arc striking device, and the output end of the arc striking inductor 640 is connected to the second output end 22 of the arc striking device. The constant current circuit 660 includes an IGBT (Insulated Gate Bipolar Transistor) and a current sensor. The current sensor detects the output current feedback of the arc striking device. The control circuit 620 generates a constant current control signal for controlling the on-time according to the measured output current feedback, so that the output current can meet the current setting value. If the output current feedback value is greater than the current setting value, the on-time is reduced. If the output current feedback is less than the current setting value, the on-time is increased. Specifically, the control circuit 620 can use PI control (proportional-integral control) to generate a constant current control signal, use the difference between the current setting value and the output current feedback value as an error signal, calculate the driving signal of the IGBT, and then generate a constant current control signal output to the IGBT, and control the on-time of the IGBT according to the error signal, so that the output current can be stabilized at the current setting value.

[0042] The current setting value may be pre-stored in the control circuit 620 or input from the outside. Figure 4 As shown, the arc striking device also includes a current setting value input module 43, which is configured to receive the current setting value and input it into the control circuit 620. The current setting value input module 43 is, for example, a knob disposed on the housing 41 of the arc striking device, and the staff sets different current setting values ​​by rotating the knob. In another embodiment, the current setting value input module 43 is, for example, an input module such as a touch screen, a button, a dial button, etc. disposed on the housing 41 of the arc striking device, and the staff can input the current setting value. In the case where the staff does not input the current setting value, the default value stored in the control circuit 620 can also be used.

[0043] like Figure 5 As shown, the control system further includes an absorption circuit 650, which is connected between the constant current circuit 660 and the arc-striking inductor 640. The absorption circuit 650 is used to absorb the high-frequency voltage of the arc-striking inductor 640 to prevent the high-voltage circuit of the arc-striking inductor 640 from affecting the internal circuit of the arc-striking device. The optional circuit structure and working principle of the absorption circuit 650 are the same as those of the previous embodiment, and are not described in detail here.

[0044] When the arc striking device is used for arc striking operation, the output current can be controlled by the constant current circuit 660 to keep the arc striking device outputting a constant current, which can be well applied to the welding process of argon arc welding. However, for the welding operation of electric arc welding, the constant current circuit 660 does not need to be set. Therefore, Figures 1 to 3The arc-starting device of the illustrated embodiment can be applied to the high-frequency arc-starting welding rod arc welding mode. The first input terminal 11 of the arc-starting device and the second input terminal 12 of the arc-starting device are connected between the output positive and negative terminals of a common welding rod arc welding machine. The arc-starting device uses the energy of the welding rod arc welding machine as the power supply energy of the arc-starting device. The power supply current converts the output electric energy of the welding rod arc welding machine and provides it to the power demand module of the arc-starting device. One of the first output terminal 21 of the arc-starting device and the second output terminal 22 of the arc-starting device is connected to the welding clamp assembly, and the other is connected to the grounding clamp assembly 32. After the arc-starting device is started by the arc-starting start switch 42, the arc-starting inductor 640 outputs a high-frequency voltage electrical signal to the output terminal 2 of the arc-starting device for high-frequency arc-starting in the welding process.

[0045] use Figures 4-5 When the arc-starting device of the illustrated embodiment performs high-frequency arc-starting argon arc welding, the staff connects the first input terminal 11 and the second input terminal 12 of the arc-starting device to the output terminal of the arc welding machine, so that the energy between the positive and negative output terminals of the arc welding machine is used as the power supply energy of the arc-starting device. One of the first output terminal 21 and the second output terminal 22 of the arc-starting device is connected to the argon arc welding gun assembly 31, and the other is connected to the grounding clamp assembly 32. The control circuit 620 starts to wait for the operation signal of the arc-starting start switch 42. After the staff operates the arc-starting start switch 42, the control circuit 620 immediately generates an arc-starting start signal to the high-frequency circuit 630. The high-frequency circuit 630 works, oscillates and generates a high-frequency high-voltage electrical signal, and this high-frequency voltage electrical signal is transmitted to the arc-starting inductor 640. After further coupling and amplification by the arc-starting inductor 640, the high-frequency arc-starting voltage is output to the first output terminal 21 and the second output terminal 22 of the arc-starting device, and the high-frequency arc-starting operation is performed. For a non-constant current output welding rod arc welding machine, by setting a constant current circuit 660, the stability of the current output from the output terminal 2 of the arc striking device can be guaranteed, so as to be better applied to the welding process of argon arc welding. In this process, the absorption circuit 650 absorbs the high-frequency and high-voltage signal generated by the arc striking inductor 640 to prevent the high-frequency and high-voltage signal from interfering with other circuits inside the arc striking device. After the arc striking is successful, the staff turns off the arc striking start switch 42, and the control circuit 620 sends an arc striking stop signal to the high-frequency circuit 630, at which time the operation of the high-frequency circuit 630 is cut off and the output of the high-frequency voltage electrical signal is stopped. Therefore, the arc striking device can be connected to the welding rod arc welding machine, and can realize the function of high-frequency argon arc welding in conjunction with the argon arc welding gun.

[0046] In summary, the arc striking device provided in this application has the following advantages:

[0047] The present application provides an arc-starting device for generating a high-frequency arc-starting voltage. When in use, it is directly connected to the output end of the welding and cutting equipment, and the non-contact high-frequency arc-starting function can be added to the welding and cutting equipment that does not originally support non-contact arc-starting. The staff can implement the non-contact high-frequency arc-starting method to perform welding arc-starting operations, effectively improving the success rate of welding arc-starting. The arc-starting process is smooth, and the operating environment of the staff can be effectively improved. By adopting the arc-starting device, it is simple to upgrade the welding and cutting equipment. The arc-starting device has a simple structure, small size, low cost, and is easy to carry. Only the cost of the arc-starting device is required to upgrade the welding and cutting equipment that does not originally support non-contact arc-starting to a welding and cutting equipment with a non-contact arc-starting function. Compared with purchasing a new welding and cutting equipment with a high-frequency arc-starting function, the upgrade cost of the existing welding and cutting equipment is greatly reduced.

[0048] The above content is a further detailed description of the present application in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. An arc striking device, characterized in that: include: The input end of the arc striking device is connected to the power supply end, and the power supply end is the output end of the welding and cutting equipment or the output end of the power supply equipment; The arc striking device output terminal is configured to output a high-frequency arc striking voltage externally; as well as Control system, including power supply circuit, control circuit, high frequency circuit and arc inductor; Among them, the power supply circuit is configured to supply power to the power-requiring circuit in the arc striking device based on the electric energy input from the input end of the arc striking device; the high-frequency circuit is configured to generate a high-frequency voltage electrical signal based on the arc striking start signal of the control circuit; the arc striking inductor is configured to amplify the high-frequency voltage electrical signal and then output a high-frequency arc striking voltage to the output end of the arc striking device.

2. The arc striking device according to claim 1, characterized in that: The control system also includes a constant current circuit, and the control circuit is further configured to generate a constant current control signal based on a current setting value. The constant current circuit is configured to control the output current of the output end of the arc striking device to be constant according to the constant current control signal.

3. The arc striking device according to claim 2, characterized in that: The output end of the arc striking device includes a first output end of the arc striking device and a second output end of the arc striking device. The output end of the constant current circuit is connected to the first output end of the arc striking device, and the output end of the arc striking inductor is connected to the second output end of the arc striking device.

4. The arc striking device according to any one of claims 1 to 3, characterized in that: The control system also includes an absorption circuit.

5. The arc striking device according to claim 2, characterized in that: A current setting value input module is also included, configured to receive a current setting value and input the current setting value into the control circuit.

6. The arc striking device according to claim 1, characterized in that: The arc striking device input end includes a first arc striking device input end and a second arc striking device input end, and the first arc striking device input end and the second arc striking device input end respectively adopt quick plugs.

7. The arc striking device according to claim 1, characterized in that: The arc-striking device output end comprises a first arc-striking device output end and a second arc-striking device output end, one of the first arc-striking device output end and the second arc-striking device output end is provided with a grounding clamp assembly, and the other is provided with a welding clamp assembly.

8. The arc striking device according to claim 1, characterized in that: The arc-striking device output end comprises a first arc-striking device output end and a second arc-striking device output end, one of the first arc-striking device output end and the second arc-striking device output end is provided with a grounding clamp assembly, and the other is provided with a welding gun assembly.

9. The arc striking device according to claim 1, characterized in that: An arc starting switch is also included, and the control circuit is configured to output an arc starting signal to the high-frequency circuit in response to a starting operation of the arc starting switch.

Images