Low-current welding simulation training device and training method for welder training

Abstract

The invention discloses a low-current welding simulation training device for welder training and a training method. The low-current welding simulation training device comprises a simulator rack, and welding workpieces and a plurality of welding torches which are oppositely arranged are installed on the two sides of the simulator rack; tungsten electrodes are installed on the welding torches, a welding simulator used for controlling the welding performance of the welding torches is arranged in the simulator rack, and a displayer reflecting welding data of the welding torches in real time is installed on the simulator rack; a displacement mechanism for adjusting the position of a welding workpiece is mounted on the simulator rack, and an acquisition line for acquiring an electric signal of the welding workpiece is mounted on the displacement mechanism; compared with the prior art, by reducing the output power and installing the electrode at the end of the welding torch, the simulator does not need real welding materials and workpieces in the training process, the material cost is greatly reduced, meanwhile, the welding performance of the welding torch is controlled under the action of the welding simulator, it is ensured that the power consumption of the simulator is far lower than that of an actual welding machine, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding teaching aids, and in particular to a low-current welding simulation training device and a training method for welder training. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasound. In addition to being used in factories, welding can also be performed in a variety of environments, such as outdoors, underwater and in space. No matter where it is, welding may be dangerous to the operator, so appropriate protective measures must be taken when welding. The possible harm caused by welding to the human body includes burns, electric shock, visual impairment, inhalation of toxic gases, excessive ultraviolet radiation, etc.

[0003] In the current welding skills training, the practical operation teaching mode is generally adopted. This method requires the instructor to demonstrate first, and then the trainees personally operate the welding machine to practice.

[0004] However, there are currently several problems with the method of using welding machines for welding skills training: 1. Welding materials are usually expensive, which may limit the scale and frequency of training; 2. The actual operation of the welding machine involves high temperatures and harmful gases, which poses a risk to the safety of trainees; 3. During the training process, a large amount of welding waste will be generated, which not only increases costs but also burdens the environment; 4. In actual operation, the welding machine cannot monitor parameters such as welding arc length, welding speed, and welding gun inclination; 5. In actual operation, it may be difficult for teachers to monitor each trainee's operation in real time and provide immediate feedback.

[0005] Chinese patent number CN104708174A discloses a simulated welding trainer, including a trainer body, on which are provided: a welding platform, a welding machine, a gas source, at least two welding guns, and at least two welding gun plugs; a test plate for welding is provided on the welding platform, the welding gun plug is arranged corresponding to the welding gun, the welding gun connector is connected to the welding machine and / or the gas source, and the welding gun connector is used to connect the welding gun and provide power and / or gas source to the welding gun.

[0006] The welding trainer disclosed above realizes simulated training of multiple welding operations on the same trainer body by providing multiple welding guns and different gas sources or power sources corresponding to the multiple welding guns. However, the welding trainer uses real consumables during use, which increases the material cost. Moreover, since welding training is usually conducted in an indoor environment, the high temperature and harmful gases generated by the consumables may pose a safety risk to trainees. Summary of the invention

[0007] The present invention aims to overcome the defects in the above-mentioned prior art and provide a low-current welding simulation training device and training method for welder training which can save cost, reduce energy consumption, and be safe and reliable.

[0008] In order to achieve the above-mentioned invention objectives, the present invention adopts the following technical scheme: a low-current welding simulation training device for welder training, comprising a simulator frame, on both sides of which are mounted relatively arranged welding workpieces and a plurality of welding torches; electrodes are mounted on the plurality of welding torches, a welding simulator for controlling the welding performance of the welding torch is arranged in the simulator frame, and a display for real-time response to the welding data of the welding torch is mounted on the simulator frame; a displacement mechanism for adjusting the position of the welding workpiece is mounted on the simulator frame, and a collection line for collecting the electrical signal of the welding workpiece is mounted on the displacement mechanism; inertia detection devices are mounted on the plurality of welding torches, and a data line electrically connected to the welding simulator is arranged on the inertia detection device.

[0009] As a preferred embodiment of the present invention, the plurality of welding torches include independently arranged fixed manual arc welding torch, telescopic manual arc welding torch, tungsten electrode gas shielded welding torch and metal electrode gas shielded welding torch. The arc starting end of the welding rod of the fixed manual arc welding torch and the telescopic manual arc welding torch is equipped with an electrode, the wire feeding nozzle position of the metal electrode gas shielded welding torch is equipped with an electrode, a gear for controlling the extension and retraction of the simulated welding rod is provided in the middle of the housing of the telescopic closing arc welding torch, a rack meshing with the gear is formed on the simulated welding rod, and the electrode is installed at the end of the simulated welding rod.

[0010] As a preferred solution of the present invention, an electrode clamp for installing the electrode is provided at the end of the simulated welding rod, limit pins are provided at both ends of the simulated welding rod, a first travel switch and a second travel switch corresponding to the limit pins at both ends of the simulated welding rod are installed on the welding torch housing, and a driving motor for driving the gear to rotate is provided in the welding torch housing.

[0011] As a preferred solution of the present invention, the welding simulator includes a rectifier module for rectifying an external power supply and a collection module for collecting electrical signals during welding, and electrical isolation is provided between the circuits of the rectifier module and the collection module.

[0012] As a preferred solution of the present invention, the rectifier module includes a power filter connected to an external power supply and a power rectifier connected to the power filter, the power rectifier is connected to a power converter for amplifying the oscillation frequency, the power converter is connected to a step-down transformer for reducing the voltage, and the step-down transformer is connected to a welding rectifier for converting AC power into DC power.

[0013] Use a data cable to connect the welding torch to one pole of the welding simulator, and use a collection line to connect the workpiece to the other pole of the welding simulator. When the distance between the electrode on the welding torch and the welding workpiece is adjusted to the specified value, an arc will be generated between the electrode and the welding workpiece.

[0014] As a preferred solution of the present invention, the acquisition module includes a host computer and an amplifier-first-stage attenuator and an amplifier-second-stage attenuator for transmitting data to the host computer.

[0015] As a preferred solution of the present invention, the displacement mechanism includes a support rod and an adjustment component sleeved on the support rod, the adjustment component is provided with a mounting seat for mounting the welding workpiece, and the adjustment component includes an X-axis adjustment member, a Y-axis adjustment member and a Z-axis adjustment member for being connected in sequence.

[0016] A training method for a low-current welding simulation training device for welder training, based on the low-current welding simulation training device for welder training, comprises the following steps: Step A: Assemble the welding workpiece onto the position changing mechanism, and adjust the position of the welding workpiece through the position changing mechanism, connect the welding workpiece to one pole of the welding simulator through the acquisition line, and connect the welding torch to the other pole of the welding simulator through the data line; Step B: Set the corresponding welding parameters on the host computer; Step C: Perform welding simulation, collect welding data in real time through a welding simulator, and compare the welding data with the welding parameters in step B to evaluate the quality of simulated welding.

[0017] As a preferred embodiment of the present invention, when a telescopic manual arc welding torch is used for welding training, the simulated welding rod will automatically extend to the longest position before training. When training starts, the motor will drive the simulated welding rod to reduce the elongation of the welding rod at a uniform speed until the elongation of the welding rod reaches the minimum value or the training time is reached to stop welding.

[0018] As a preferred embodiment of the present invention, there is no loss of welding rods and workpieces during the training process of using fixed manual arc welding torches and telescopic manual arc welding torches, and there is no loss of shielding gas, water cooling pipelines and workpieces during the training process of using tungsten electrode gas shielded welding torches and metal electrode gas shielded welding torches.

[0019] Compared with the prior art, the invention has the following beneficial effects: by installing an electrode at the end of the welding torch, the simulator does not need real welding materials and workpieces during training, which greatly reduces the material cost; at the same time, the welding performance of the welding torch is controlled under the action of the welding simulator, ensuring that the power consumption of the simulator is much lower than that of the actual welding machine, thereby reducing energy consumption; Provides a risk-free environment with electrodes and welding simulators, avoiding fire, explosion and electrical accidents that may occur in actual welding; The simulator can simulate a variety of welding methods (metal arc welding, tungsten inert gas welding and metal arc welding), allowing trainees to master different welding techniques; The welding simulator can monitor parameters such as arc length, welding speed, and torch inclination to ensure the correctness of the welding process. The welding simulator processes the collected signals and provides information such as arc length, welding speed, torch working angle, and travel angle, which helps trainees understand the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of a telescopic manual arc welding torch; Figure 3 It is a structural diagram of the displacement mechanism; Figure 4 is a schematic diagram of the structure of the regulating component; Figure 5 This is the internal circuit diagram of the welding simulator; Figure markings: simulator frame 1, welding workpiece 2, welding torch 3, welding torch housing 31, inertial detection device 32, gear 33, simulated welding rod 34, rack 341, first travel switch 35, second travel switch 36, limit pin 37, electrode 38, electrode clamp 381, drive motor 39, welding simulator 4, display 5, displacement mechanism 6, support rod 61, adjustment assembly 62, mounting seat 63, X-axis adjustment member 64, Y-axis adjustment member 65, Z-axis adjustment member 66, data cable 7, acquisition cable 8. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-Figure 5 As shown, a low-current welding simulation training device for welder training includes a simulator frame 1, on both sides of which are mounted relatively arranged welding workpieces 2 and a plurality of welding torches 3; electrodes 38 are mounted on the plurality of welding torches 3; a welding simulator 4 for controlling the welding performance of the welding torch 3 is arranged in the simulator frame 1, and a display 5 for real-time response to welding data of the welding torch 3 is mounted on the simulator frame 1; a displacement mechanism 6 for adjusting the position of the welding workpiece 2 is mounted on the simulator frame 1, and a collection line 8 for collecting electrical signals of the welding workpiece 2 is mounted on the displacement mechanism 6; inertia detection devices 32 are mounted on the plurality of welding torches 3, and a data line 7 electrically connected to the welding simulator 4 is provided on the inertia detection device 32.

[0023] The inertial detection device 32 moves synchronously with the welding torch 3. A sensor is provided inside the inertial detection device 32 for collecting the welding speed, working angle and travel angle of the welding torch 3 during the welding process, thereby obtaining the welding speed, working angle and travel angle data of the welding torch 3 during the welding process. These data are transmitted to the welding simulator 4 through the data line 7, and are fed back to the host computer through the welding simulator 4. The host computer processes these electrical signals and makes corresponding feedback, and finally displays the data in real time on the display 5.

[0024] Several welding torches 3 include independently set fixed manual arc welding torch, telescopic manual arc welding torch, tungsten electrode gas shielded welding torch and metal electrode gas shielded welding torch. The arc starting end of the fixed manual arc welding torch and the telescopic manual arc welding torch is equipped with an electrode 38, and the wire feeding nozzle position of the metal electrode gas shielded welding torch is equipped with an electrode 38.

[0025] The fixed manual arc welding torch, the telescopic manual arc welding torch, the tungsten electrode gas shielded welding torch and the metal electrode gas shielded welding torch are all connected to the welding simulator 8 via the data cable 7, so that when different welding torches 3 are selected, the detection data of the inertial detection device 32, that is, the welding data of the corresponding welding torch 3, can be obtained under the action of the corresponding data cable 7.

[0026] The elongation of the electrode of a fixed manual arc welding torch will not change during the welding process, so the electrode 38 of the fixed manual arc welding torch is always in a relatively static state during the welding process, while the elongation of the electrode of a telescopic manual arc welding torch will decrease during the welding process, so the position of the electrode 38 of the telescopic manual arc welding torch changes during the welding process.

[0027] The telescopic manual electrode arc welding torch includes a welding torch shell 31 and a simulated welding rod 34 installed on the welding torch shell 31. A gear 33 for controlling the telescopic movement of the simulated welding rod 34 is provided in the middle of the welding torch shell 31. A rack 341 meshing with the gear 33 is formed on the simulated welding rod 34. An electrode 38 is installed at the end of the simulated welding rod 34.

[0028] The rack 341 is arranged along the length direction of the simulated welding rod 34, and the welding torch housing 31 forms a grip-type structure that is convenient for the operator to handle. Under the rotation of the gear 33, the simulated welding rod 34 can be extended and retracted along its own length direction.

[0029] An electrode clamp 381 for mounting the electrode 38 is provided at the end of the simulated welding rod 34, and limit pins 37 are provided at both ends of the simulated welding rod 34. A first travel switch 35 and a second travel switch 36 corresponding to the limit pins 37 at both ends of the simulated welding rod 34 are installed on the welding torch housing 31, and a driving motor 39 for driving the gear 33 to rotate is provided in the welding torch housing 31.

[0030] The end of the simulated welding rod 34 can generate a welding arc with the welding workpiece 2 under the action of the electrode 38. When the simulated welding rod 34 moves to the farthest telescopic position or the closest telescopic position, the simulated welding rod 34 can trigger the first travel switch 35 or the second travel switch 36, thereby controlling the shutdown of the drive motor 39 to ensure that the rack 341 is always engaged with the gear 33.

[0031] The welding simulator 4 includes a rectifier module for rectifying an external power supply and a collection module for collecting electrical signals during the welding process. The circuits of the rectifier module and the collection module are provided with electrical isolation.

[0032] The rectifier module includes a power filter connected to an external power supply and a power rectifier connected to the power filter, the power rectifier is connected to a power converter for amplifying the oscillation frequency, the power converter is connected to a step-down transformer for reducing the voltage, and the step-down transformer is connected to a welding rectifier for converting AC power into DC power.

[0033] The power filter is directly connected to the external AC power, and the external AC power is shaped under the action of the power filter, and then the external AC power is converted into DC power by the power rectifier. The rectified DC power is then converted into AC power through the power converter (i.e. inverter), but the oscillation frequency of the converted AC power is greater than 40kHz. This high-frequency AC power is conducive to improving welding efficiency and controlling welding quality.

[0034] The high-frequency AC power is further reduced in voltage by a step-down transformer to meet the requirements of the welding process. The stepped-down AC power is again converted into DC welding current by a welding rectifier, which will be used for the actual welding operation. The pulse width modulation controller adjusts the pulse width according to the set rules.

[0035] The welding current is transmitted to the welding torch 3 via the data line 7, forming an "electrode-arc-sample" circuit. This structure is similar to that of a modern inverter welding machine, with an efficiency usually above 85%, and good controllability of the welding current. Inverter technology can significantly reduce the size of the power module and improve portability. In order to improve the safety level of the system, electrical isolation is used between functionally connected circuits, and hardware control circuits are added so that the power can be quickly cut off in an emergency. The service power supply is a system that provides stable energy for key components and ensures the normal operation of the main circuit.

[0036] The acquisition module includes a host computer and an amplifier-first-stage attenuator and an amplifier-second-stage attenuator for transmitting data to the host computer. The acquisition module collects data of the welding workpiece 2 through the acquisition line 8. Since the welding workpiece 2 is made of the required metal material for welding and meets the conductivity requirements, the acquisition line 8 arranged at both ends of the welding workpiece 2 can collect the voltage and current of the arc of the welding workpiece during the welding process. These signals are fed back to the host computer after being processed by the amplifier-first-stage attenuator and the amplifier-second-stage attenuator. The host computer processes these electrical signals and makes corresponding feedback, and displays the data in real time on the display 5.

[0037] The displacement mechanism 6 includes a support rod 61 and an adjustment assembly 62 sleeved on the support rod 61. The adjustment assembly 62 is provided with a mounting seat 63 for mounting the welding workpiece 2. The adjustment assembly 62 includes an X-axis adjustment member 64, a Y-axis adjustment member 65 and a Z-axis adjustment member 66 which are connected in sequence.

[0038] Under the combined action of the X-axis adjusting member 64, the Y-axis adjusting member 65 and the Z-axis adjusting member 66, the spatial position of the welding workpiece 2 can be adjusted to meet welding requirements in different situations.

[0039] The Z-axis adjusting member 66 is a connecting rod structure sleeved on the support rod 61. The height of the Z-axis adjusting member 66 can be adjusted according to the height of the support rod 61, and the Z-axis adjusting member 66 can rotate in the radial direction of the support rod 61 to adjust the horizontal positions of the X-axis adjusting member 64 and the Y-axis adjusting member 65. Screws for locking the height of the Z-axis adjusting member 66 and screws for locking the Y-axis adjusting member 65 are provided at both ends of the Z-axis adjusting member 66.

[0040] The Y-axis adjusting member 65 is a straight rod structure inserted into the end of the Z-axis adjusting member 66 . The position of the X-axis adjusting member 64 is adjusted by adjusting the insertion depth of the Y-axis adjusting member 65 in the Z-axis adjusting member 66 .

[0041] The X-axis adjusting member 64 is a connecting seat hingedly connected to the end of the Y-axis adjusting member 65, and the end of the Y-axis adjusting member 65 is provided with a screw for locking the rotation angle of the X-axis adjusting member 64. Under the rotation action of the X-axis adjusting member 64, the installation angle of the mounting seat 63 on the Y-axis adjusting member 65 is adjusted.

[0042] The welding workpiece 2 includes a flat welding workpiece and a fillet welding workpiece. Different types of welding workpieces 2 are matched with mounting seats 63 of different structures. The acquisition line 8 is clamped at both ends of the welding workpiece 2, so that the welding workpiece 2 is conductively connected under the action of the acquisition line 8 at both ends, so that the voltage and current data of the welding workpiece 2 are collected under the action of the acquisition line 8.

[0043] A training method for a low-current welding simulation training device for welder training, based on the low-current welding simulation training device for welder training, is characterized by comprising the following steps: Step A: Assemble the welding workpiece 2 onto the displacement mechanism 6, and adjust the position of the welding workpiece 2 through the displacement mechanism 6. The welding workpiece 2 is connected to one pole of the welding simulator 4 through the acquisition line 8, and the welding torch 3 is connected to the other pole of the welding simulator 4 through the data line 7.

[0044] Step B: Set corresponding welding parameters on the host computer. The welding parameters may include welding gun type, welding position, training time, number of task repetitions, arc length, working angle range, travel angle range, and welding speed range.

[0045] Step C: Perform welding simulation, collect welding data in real time through the welding simulator 4, and compare the welding data with the welding parameters in step B to evaluate the quality of simulated welding.

[0046] The welding parameters can be obtained according to textbooks in the prior art.

[0047] When a telescopic manual arc welding torch is used for welding training, the simulated electrode 34 will automatically extend to the longest position before training. When training begins, the motor will drive the simulated electrode 34 to uniformly reduce the electrode extension amount until the electrode extension amount reaches the minimum value or the training time is reached to stop welding.

[0048] Before the training starts, the welding simulator 4 sends a reset signal to the controller of the drive motor 39. The drive motor 39 drives the gear 33 to rotate, thereby extending the simulated welding rod 34 to the front end of the welding torch housing 31 until the limit pin 37 closes the first travel switch 35, sending a signal to the controller of the drive motor 39, and the drive motor 39 stops running and feeds back a reset completion signal to the computer.

[0049] After the arc of the electrode 38 is generated, the welding simulator 4 will give a welding start signal to the drive motor 39, and the drive motor 39 controls the rotation of the gear 33 and ensures that the simulated welding rod 34 is shortened at a specific speed. After the limit pin 37 closes the second stroke switch 36, a signal is given to the drive motor 39, and the drive motor 39 stops running and feeds back a welding completion signal to the welding simulator 4. Before the second stroke switch 36 is closed, when the arc of the electrode 38 is extinguished, the welding simulator 4 will also feed back a signal to shut down the drive motor 39 to the drive motor 39.

[0050] During the training process of using the fixed manual arc welding torch and the telescopic manual arc welding torch, the simulated welding rod 34 can replace the conventional welding rod under the action of the fixed manual arc welding torch and the telescopic manual arc welding torch's own electrodes 38, and there is no loss of workpieces.

[0051] During the training process of using tungsten electrode gas shielded welding torch and metal electrode gas shielded welding torch, since the output power of the welding simulator 4 can be controlled under the action of the rectifier module, under the action of lower output power and the action of its own electrode 38, there is no need to set up welding wire, protective gas pipeline and water cooling pipeline, and there is no loss of workpiece.

[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0053] Although the present invention uses the following terms more frequently: simulator frame 1, welding workpiece 2, welding torch 3, welding torch housing 31, inertial detection device 32, gear 33, simulated welding rod 34, rack 341, first travel switch 35, second travel switch 36, limit pin 37, electrode 38, electrode clamp 381, drive motor 39, welding simulator 4, display 5, displacement mechanism 6, support rod 61, adjustment assembly 62, mounting seat 63, X-axis adjustment member 64, Y-axis adjustment member 65, Z-axis adjustment member 66, data line 7, acquisition line 8, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A low-current welding simulation training device for welder training, comprising a simulator frame (1), with welding workpieces (2) and a plurality of welding torches (3) arranged opposite to each other mounted on both sides of the simulator frame (1); characterized in that: Several of the welding torches (3) are equipped with electrodes (38); a welding simulator (4) for controlling the welding performance of the welding torch (3) is arranged in the simulator frame (1), and a display (5) for real-time response to welding data of the welding torch (3) is arranged on the simulator frame (1); a displacement mechanism (6) for adjusting the position of a welding workpiece (2) is arranged on the simulator frame (1), and a collection line (8) for collecting electrical signals of the welding workpiece (2) is arranged on the displacement mechanism (6); several of the welding torches (3) are equipped with inertia detection devices (32), and the inertia detection devices (32) are equipped with a data line (7) electrically connected to the welding simulator (4).

2. A low current welding simulation training device for welder training according to claim 1, characterized in that: The welding torches (3) include a fixed manual arc welding torch, a telescopic manual arc welding torch, a tungsten electrode gas shielded welding torch and a metal electrode gas shielded welding torch, each of which is independently arranged. The arc starting end of the welding rod of the fixed manual arc welding torch and the telescopic manual arc welding torch is equipped with an electrode (38), and the wire feeding nozzle position of the metal electrode gas shielded welding torch is equipped with an electrode (38).

3. A low current welding simulation training device for welder training according to claim 2, characterized in that: The telescopic manual welding rod arc welding torch comprises a welding torch housing (31) and a simulated welding rod (34) mounted on the welding torch housing (31); a gear (33) for controlling the telescopic movement of the simulated welding rod (34) is provided in the middle of the welding torch housing (31); a rack (341) meshing with the gear (33) is formed on the simulated welding rod (34); an electrode (38) is mounted on the end of the simulated welding rod (34); an electrode clamp (381) for mounting the electrode (38) is provided at the end of the simulated welding rod (34); limit pins (37) are provided at both ends of the simulated welding rod (34); a first travel switch (35) and a second travel switch (36) corresponding to the limit pins (37) at both ends of the simulated welding rod (34) are installed on the welding torch housing (31); and a driving motor (39) for driving the gear (33) to rotate is provided in the welding torch housing (31).

4. A low current welding simulation training device for welder training according to claim 1, characterized in that: The welding simulator (4) comprises a rectifier module for rectifying an external power supply and a collection module for collecting electrical signals during the welding process, and electrical isolation is provided between the circuits of the rectifier module and the collection module.

5. A low current welding simulation training device for welder training according to claim 4, characterized in that: The rectifier module includes a power filter connected to an external power supply and a power rectifier connected to the power filter, the power rectifier is connected to a power converter for amplifying the oscillation frequency, the power converter is connected to a step-down transformer for reducing the voltage, and the step-down transformer is connected to a welding rectifier for converting AC power into DC power.

6. A low current welding simulation training device for welder training according to claim 5, characterized in that: The acquisition module comprises a host computer and an amplifier-first-stage attenuator and an amplifier-second-stage attenuator for transmitting data to the host computer.

7. A low current welding simulation training device for welder training according to claim 1, characterized in that: The displacement mechanism (6) comprises a support rod (61) and an adjustment assembly (62) sleeved on the support rod (61); a mounting seat (63) for mounting a welding workpiece (2) is provided on the adjustment assembly (62); the adjustment assembly (62) comprises an X-axis adjustment member (64), a Y-axis adjustment member (65) and a Z-axis adjustment member (66) which are connected in sequence.

8. A training method for a low-current welding simulation training device for welder training, based on the low-current welding simulation training device for welder training as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step A: assembling a welding workpiece (2) onto a position changing mechanism (6), and adjusting the position of the welding workpiece (2) via the position changing mechanism (6), connecting the welding workpiece (2) to one pole of a welding simulator (4) via a data acquisition line (8), and connecting a welding torch (3) to the other pole of the welding simulator (4) via a data line (7); Step B: Set the corresponding welding parameters on the host computer; Step C: Perform welding simulation, collect welding data in real time through the welding simulator (4), and compare the welding data with the welding parameters in step B to evaluate the quality of the simulated welding.

9. The training method of the low current welding simulation training device for welder training according to claim 8, characterized in that: When a telescopic manual arc welding torch is used for welding training, the simulated welding rod (34) will automatically extend to the longest position before training. When training starts, the motor will drive the simulated welding rod (34) to reduce the elongation of the welding rod at a uniform speed until the elongation of the welding rod reaches the minimum value or the training time is reached, and welding is stopped.

10. The training method of the low current welding simulation training device for welder training according to claim 8, characterized in that: There is no loss of welding rods and workpieces during the training process of using fixed manual arc welding torches and telescopic manual arc welding torches. There is no loss of shielding gas, water cooling pipelines and workpieces during the training process of using tungsten inert gas shielded welding torches and metal inert gas shielded welding torches.

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