A cold welding process and welding machine

Abstract

This invention belongs to the technical field of dental implant welding equipment, and provides a cold welding process and welding machine. The cold welding process includes the following steps: constant electrode pressure control, applying constant pressure to the welding electrode through an elastic clamping structure to ensure tight contact between the electrode and the workpiece, eliminating contact gaps; precise energy parameter matching, adjusting the welding pulse number and energy peak value according to the workpiece material and thickness to achieve energy matching with the workpiece; active overheat protection, dissipating internal heat through a heat dissipation structure in real time, controlling the temperature of core components within a preset range, and automatically shutting down the equipment to cool down when the temperature exceeds a preset threshold. This invention achieves zero welding sparks, high welding quality precision, and long-term stable operation of the equipment. It is suitable for cold welding operations of dental implant titanium wires and accessories, and has the advantages of safe operation, high welding efficiency, and long service life.

Description

Technical Field

[0001] This invention belongs to the technical field of dental implant welding equipment, and particularly relates to a cold welding process and welding machine. Background Technology

[0002] Cold welding is a special welding process that uses high-voltage pulsed current to achieve solid-state metal connections at room temperature. In the field of dental implantology, this technology is widely used for welding titanium wires and implant fittings. The welding quality directly determines the connection strength and clinical lifespan of the implant. Currently, mainstream dental cold welding machines on the market, such as the MEDIWELDLabWeld cold welding machine, suffer from the following three core technical defects in practical applications, which seriously restrict the welding effect and equipment stability:

[0003] Poor electrode contact stability: The copper electrode of the traditional cold welding machine relies solely on the elasticity of the welding clamp's own spring for clamping, without a precise pressure limiting structure. The pressure value is easily affected by the operator's technique and fluctuates. When there is a tiny gap between the copper electrode and the titanium wire workpiece, the high-voltage pulse current will break down the air and form welding sparks. This not only burns the surface of the titanium wire, causing a decrease in the strength of the weld joint, but also threatens the safety of the dental treatment environment. At the same time, it does not meet the clinical requirements for spark-free operation of dental equipment.

[0004] Insufficient energy output precision: Traditional cold welding machines use a fixed energy adjustment mode with only three preset energy levels: high, medium, and low. This makes it impossible to independently adjust the pulse count and energy peak value. When welding thin-walled titanium wires, a fixed high energy level can lead to excessive metal melting and scrap of the workpiece. When welding thick-walled titanium wires, a low energy level cannot achieve effective fusion, and the welded joint is prone to detachment, making it difficult to meet the high-precision welding requirements of dental implant accessories.

[0005] Weak overheat protection: Traditional cold welding machines do not have an active heat dissipation structure and rely solely on the natural heat dissipation of the frame shell. During long-term continuous welding operations, the power module and electronic switches will continuously generate heat. The heat accumulation causes the temperature of the core components to exceed the safety threshold, triggering the overheat protection shutdown. Frequent shutdowns not only reduce welding efficiency but also accelerate the aging of electronic components, shorten the service life of the equipment, and increase the maintenance cost of the equipment.

[0006] Therefore, a cold welding process and welding machine are needed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a cold welding process and welding machine to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cold welding process, comprising the following steps:

[0009] S1. Constant electrode pressure control: A constant pressure is applied to the welding electrode through an elastic clamping structure, so that the electrode and the workpiece are in close contact, eliminating contact gaps.

[0010] S2. Precise matching of energy parameters: Adjust the number of welding pulses and the peak energy according to the material and thickness of the workpiece to achieve energy matching with the workpiece.

[0011] S3. Active overheat protection for equipment: The heat dissipation structure dissipates heat from inside the equipment in real time, controls the temperature of core components within a preset range, and automatically shuts down the equipment to cool down when the temperature exceeds the preset threshold.

[0012] The electrode pressure constant control step applies constant pressure through an elastic clamping structure to eliminate the contact gap between the electrode and the workpiece, thus preventing spark generation at the source. The energy parameter precise matching step achieves precise matching between welding energy and workpiece thickness by adjusting the pulse number and energy peak value. The equipment overheat active protection step controls the temperature of core components within a preset safe range through a heat dissipation structure, avoiding overheating shutdown and ensuring continuous equipment operation.

[0013] Further technical solutions also include a real-time fault diagnosis step, which monitors the electrode contact status, energy output status and temperature status through a diagnostic module to generate corresponding fault codes;

[0014] The fault diagnosis module monitors electrode contact, energy output, and temperature status, generating corresponding fault codes. Operators can quickly locate the fault type based on the codes and take targeted measures to improve equipment maintenance efficiency.

[0015] In a further technical solution, in the electrode pressure constant control step, the elastic clamping structure adopts a spring-limiting structure, and the spring compression stroke is limited by the limiting component;

[0016] The spring-limiting structure limits the compression stroke of the spring through a limiting sleeve, ensuring that the pressure applied by the spring is stable and unaffected by the operating method. This structure is easy to disassemble and assemble, facilitating the replacement and maintenance of the copper electrodes.

[0017] In a further technical solution, in the precise matching step of energy parameters, the welding of thin-walled titanium wire uses a low pulse number with a low energy peak value, while the welding of thick-walled titanium wire uses a high pulse number with a high energy peak value.

[0018] The appropriate range is determined by the thickness of the titanium wire. For thin-walled titanium wire, a low pulse number and low energy peak value are selected, while for thick-walled titanium wire, a high pulse number and high energy peak value are selected to achieve high-quality welding of workpieces of different specifications and reduce the scrap rate of workpieces.

[0019] In a further technical solution, the overheating active protection step of the device adopts a combination of forced cooling by a fan and exhaust through a channel.

[0020] The system employs a combination of forced cooling fans and exhaust channels to accelerate airflow within the rack, while dust filters prevent dust from entering, ensuring efficient heat dissipation while protecting electronic components.

[0021] A cold welding machine, applied to any of the above-described cold welding processes, includes a frame, welding components, control components, heat dissipation components, and fault diagnosis components;

[0022] The power module and fuse assembly are fixedly installed inside the rack. A main switch and a power cord interface are provided on the back of the rack. The main switch is connected in series between the power module and the power cord interface.

[0023] The welding assembly includes a welding clamp, a copper electrode, and an electrode clamping component. The copper electrode is symmetrically mounted on the end of the welding clamp, and the electrode clamping component is sleeved on the outside of the copper electrode. The welding clamp is electrically connected to the power module via a cable.

[0024] The control components include an LCD screen, a rotary switch, and a foot switch embedded in the surface of the rack. The foot switch is plugged into an interface on the left side of the rack.

[0025] The heat dissipation assembly includes a cooling fan fixed inside the rack and a heat dissipation channel opened on the side wall of the rack.

[0026] The fault diagnosis component is signal-connected to the control component;

[0027] The frame is set as the overall support structure, the power module provides stable power to the equipment, and the fuse assembly provides overcurrent protection; the welding assembly ensures constant electrode pressure through electrode clamping parts; the control assembly realizes mode selection, parameter adjustment and welding triggering; the heat dissipation assembly realizes active heat dissipation; the fault diagnosis assembly monitors the equipment status in real time. All components are electrically or signal connected to form an organic whole to ensure the efficient execution of process steps.

[0028] In a further technical solution, the electrode clamping component includes a spring and a limiting sleeve, with the two ends of the spring respectively abutting against the copper electrode and the limiting sleeve, and the limiting sleeve being threadedly connected to the end of the welding clamp;

[0029] The system combines a spring and a limiting sleeve. The limiting sleeve is threaded to the end of the welding clamp. The spring compression stroke can be finely adjusted by rotating the limiting sleeve to adapt to the welding pressure requirements of workpieces of different thicknesses, thus improving the versatility of the equipment.

[0030] In a further technical solution, the control component also includes a green working indicator light and a red fault indicator light, both of which are embedded in the surface of the rack and electrically connected to the power module.

[0031] The LCD screen is a multi-line LCD screen, and the number of characters displayed in each line is not less than a preset number;

[0032] The system features a green working indicator light and a red fault indicator light. A green light indicates that the equipment is in operation, while a red light indicates that the equipment has malfunctioned. Operators can quickly determine the equipment status using these indicator lights. The LCD screen uses a multi-line design to ensure clear display of parameter information.

[0033] In a further technical solution, a dustproof mesh is snapped into the heat dissipation channel, and the cooling fan is signal-connected to the fault diagnosis component;

[0034] The fault diagnosis component pre-stores a diagnostic program for fault codes, which correspond to fault types such as electrode separation, foot switch malfunction, and electronic switch overheating.

[0035] Dust filters are installed inside the heat dissipation channels to prevent dust from the dental clinic from entering the rack and affecting the normal operation of electronic components; the fault diagnosis component has a pre-stored fault code diagnostic program, which can realize real-time fault diagnosis and display, improving the intelligence level of the equipment.

[0036] In a further technical solution, the handle of the welding clamp is fitted with an insulating and anti-slip sleeve made of silicone material, and the roughness of the coupling plane of the copper electrode is not greater than a preset value.

[0037] The fuse assembly includes a fuse box and a built-in fuse, the fuse box being detachably connected to the back of the frame;

[0038] The rack has an IPX0 protection rating and has preset dimensions and weight.

[0039] Silicone insulating anti-slip sleeves are installed on the welding clamp handles to improve operating comfort and safety; the roughness of the copper electrode coupling plane is limited to ensure the contact area between the electrode and the workpiece and the current conduction efficiency; fuses are installed to achieve overcurrent protection and improve equipment safety; the frame parameters adopt the size and weight of existing equipment to ensure the portability and installation compatibility of the equipment.

[0040] Through the collaborative design of processes and equipment, the technical goals of stable electrode contact, precise energy output, and efficient heat dissipation of equipment have been achieved, solving the core technical defects of traditional cold welding machines and making it suitable for high-precision welding operations in the field of dental implants.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] This invention improves electrode contact stability and eliminates welding sparks: A constant pressure is applied by the spring in the electrode clamping component, and the limiting sleeve precisely limits the spring compression stroke, ensuring a tight fit between the copper electrode and the titanium wire workpiece. This completely eliminates contact gaps, fundamentally solving the spark problem caused by pressure fluctuations in traditional equipment. It also prevents burning of the titanium wire surface, ensuring the strength and aesthetics of the weld joint. Simultaneously, the spark-free welding mode meets the safety requirements of the dental treatment environment, reducing safety threats to operators, improving the safety of welding operations, and reducing reliance on operator skills.

[0043] This invention achieves precise energy matching, ensuring consistent welding quality: The control components allow for independent adjustment of the pulse count and energy peak value, with a real-time LCD display showing the parameters. Operators can flexibly set parameters according to the thickness of the titanium wire. For thin-walled titanium wires, a low pulse count and low energy peak value are selected to reduce energy input per unit time and avoid over-melting. For thick-walled titanium wires, a high pulse count and high energy peak value are selected, increasing energy density through pulse superposition to ensure sufficient joint fusion. This parameter adjustment mode covers the specifications of commonly used titanium wires in dental implantology, improving the consistency and stability of welding quality, reducing workpiece scrap rates, and decreasing the number of welding tests, thus increasing welding efficiency.

[0044] This invention enhances the heat dissipation performance of equipment and extends its service life: The cooling fan of the heat dissipation component accelerates airflow within the frame, and heat is dissipated through a heat dissipation channel with a dust filter, stabilizing the temperature of core components within a preset safe range. When the temperature exceeds a preset threshold, the fault diagnosis component triggers the equipment to automatically shut down and cool down, preventing aging and damage to electronic components due to overheating. This solves the problem of low natural heat dissipation efficiency in traditional equipment, allowing the equipment to operate continuously for extended periods and improving work efficiency. Simultaneously, the dust filter prevents dust from entering the equipment, further extending the service life of electronic components and reducing equipment maintenance costs.

[0045] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall process of the present invention;

[0047] Figure 2 This is a schematic diagram of the overall architecture of the present invention.

[0048] In the diagram: 1. Frame; 11. Power module; 12. Fuse assembly; 121. Fuse box; 122. Fuse; 13. Main switch; 14. Power cord interface; 2. Welding assembly; 21. Welding clamp; 211. Insulating anti-slip sleeve; 22. Copper electrode; 23. Electrode clamping part; 231. Spring; 232. Limit sleeve; 24. Cable; 3. Control assembly; 31. LCD screen; 32. Rotary switch; 33. Foot switch; 34. Green working indicator light; 35. Red fault indicator light; 4. Heat dissipation assembly; 41. Cooling fan; 42. Heat dissipation channel; 421. Dustproof net; 5. Fault diagnosis assembly. Detailed Implementation

[0049] The present invention will be further described below with reference to embodiments.

[0050] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0051] Example 1: Cold welding machine adapted for thin-walled titanium wire welding

[0052] Please see Figure 1-2 This invention provides a cold welding process, comprising the following steps:

[0053] S1. Constant electrode pressure control: A constant pressure is applied to the welding electrode through an elastic clamping structure, so that the electrode and the workpiece are in close contact, eliminating contact gaps.

[0054] S2. Precise matching of energy parameters: Adjust the number of welding pulses and the peak energy according to the material and thickness of the workpiece to achieve energy matching with the workpiece.

[0055] S3. Active overheat protection: The heat dissipation structure dissipates internal heat in real time, controlling the temperature of core components within a preset range. When the temperature exceeds a preset threshold, the equipment automatically shuts down to cool down.

[0056] When welding 0.1-0.3mm thin-walled titanium wires, the following steps are implemented: constant electrode pressure control is applied through an elastic clamping structure to eliminate contact gaps; precise energy parameter matching is performed by selecting a low pulse count and a low energy peak value; active overheat protection is implemented by using forced cooling fans combined with channel exhaust to control the temperature of core components; and real-time fault diagnosis is activated to monitor the equipment status in real time. No sparks are generated during the welding process, the weld joint strength meets the requirements for dental implant fittings, and the workpiece scrap rate is reduced to below 1%.

[0057] A cold welding machine, applied to the cold welding process of the above embodiments, includes:

[0058] The rack 1 is made of hard alloy material with an IPX0 protection rating and has preset dimensions and weight. The power module 11 and fuse assembly 12 are fixedly installed inside the rack 1. The fuse box 121 of the fuse assembly 12 is detachably connected to the back of the rack 1, and the built-in fuse 122 provides overcurrent protection. The main switch 13 on the back of the rack 1 is connected in series between the power module 11 and the power cord interface 14 to realize the on-off control of the equipment.

[0059] Welding assembly 2 includes a silicone insulating anti-slip sleeve 211 on the handle of the welding clamp 21 to improve operating comfort and safety; copper electrodes 22 are symmetrically installed at the end of the welding clamp 21, and the surface roughness of the coupling plane is ground to a preset value to ensure good fit with the thin-walled titanium wire; the electrode clamping component 23 consists of a spring 231 and a limiting sleeve 232, with the two ends of the spring 231 abutting against the copper electrode 22 and the limiting sleeve 232 respectively, and the limiting sleeve 232 being threadedly connected to the end of the welding clamp 21. By rotating the limiting sleeve 232, the spring compression stroke is limited to apply constant pressure; the welding clamp 21 is electrically connected to the power module 11 via a cable 24 to ensure stable current transmission.

[0060] The control component 3 has a 4-line LCD screen 31, with each line displaying no less than a preset number of characters, clearly presenting welding parameters and fault information; the rotary switch 32 has rotation for gear selection, short press for confirmation, and long press for return; the foot switch 33 is plugged into the interface on the left side of the frame 1 for easy disassembly and disinfection; the green working indicator light 34 and the red fault indicator light 35 are embedded in the surface of the frame 1 and electrically connected to the power module 11 to display the equipment status in real time;

[0061] The heat dissipation component 4 and the fault diagnosis component 5 are connected. The heat dissipation fan 41 of the heat dissipation component 4 is fixed inside the frame 1. The heat dissipation channel 42 is opened on the side wall of the frame 1. The dustproof net 421 is snapped into the channel to prevent dust from entering. The heat dissipation fan 41 is connected to the fault diagnosis component 5 by signal. The fault diagnosis component 5 has a pre-stored fault code diagnostic program, which can monitor fault types such as electrode separation and foot switch abnormality.

[0062] Example 2: Cold welding machine adapted for thick-walled titanium wire welding

[0063] The cold welding machine structure in this embodiment is basically the same as that in Embodiment 1, the difference being the parameter adaptation of the electrode clamping component 23 and the heat dissipation component 4. The specific structure and parameter settings are as follows:

[0064] Differentiated structural design: The spring 231 of the electrode clamping component 23 is made of a material with a higher elastic coefficient. The spring compression stroke is adjusted by rotating the limiting sleeve 232 to apply a greater constant pressure, which is suitable for the welding clamping requirements of thick-walled titanium wire; The cooling fan 41 of the heat dissipation component 4 is made of a fan with a higher speed to improve heat dissipation efficiency and meet the heat dissipation requirements of higher energy output during the welding of thick-walled titanium wire.

[0065] Process Implementation and Results: When welding 0.4-1.0mm thick-walled titanium wires, a constant electrode pressure control step is implemented, applying constant pressure through an elastic clamping structure to ensure tight contact between the copper electrode 22 and the thick-walled titanium wire; a precise energy parameter matching step is implemented, selecting a high-level pulse number to match a high-level energy peak, and increasing energy density through pulse superposition; an active overheat protection step is implemented, with the cooling fan 41 running at high speed to control the temperature of core components within a preset range; simultaneously, a real-time fault diagnosis step is activated to monitor the equipment status in real time. The welded joint is fully fused, and the tensile strength meets the high-strength connection requirements of dental implants, increasing the continuous welding time of the equipment to over 2 hours.

[0066] Working principle and usage process of this invention:

[0067] Equipment preparation stage: Place the frame 1 in an indoor environment with preset temperature, humidity, and air pressure, and turn off the main switch 13; insert the power cord into the power cord interface 14 and connect it to the mains power; screw the welding clamp 21 into the right interface of the frame 1 via the cable 24 to ensure there is no mechanical clearance; plug and unplug the foot switch 33 into the left interface of the frame 1; check the coupling plane of the copper electrode 22, and if there is an oxide layer, sand it down to below the preset roughness; check the state of the spring 231 of the electrode clamping part 23, and adjust the pressure value to a constant range by rotating the limit sleeve 232;

[0068] Power-on self-test phase: Turn on the main switch 13, the equipment starts the self-test program, the LCD screen 31 displays the startup screen, the green working indicator 34, the red fault indicator 35 and the buzzer are activated in sequence, and the operator can check the integrity of each component of the equipment; after the self-test is completed, the display screen shows the software version information, the red fault indicator 35 goes out, the fault diagnosis component 5 enters the standby state, and monitors the electrode contact status, energy output status and core component temperature in real time;

[0069] Parameter setting stage: Select the "WORK" mode in the main menu by rotating the knob switch 32 to enter the welding parameter setting interface; adjust the pulse number and energy peak value according to the thickness and material of the titanium wire: select a low pulse number and low energy peak value for thin-walled titanium wire, and select a high pulse number and high energy peak value for thick-walled titanium wire; after adjustment, briefly press the knob switch 32 to confirm the parameters, and the parameter information is displayed in real time on the LCD screen 31; if you need to customize the parameters, you can select the "MODIFYPROGRAM" option, and save the parameters after setting;

[0070] Welding Operation Stage: After parameter confirmation, the LCD screen 31 prompts the operator to wear protective glasses and check the cable position. A short press of the rotary switch 32 activates the welding mode, which remains active for a preset duration. The operator places the titanium wire workpiece between the copper electrodes 22, which then adhere tightly to the workpiece under the pressure of the spring 231. Within the preset duration, the operator presses the foot switch 33, causing the power module 11 to output a high-voltage pulse current, achieving solid-state welding of the titanium wire. The welding cycle is the preset duration. After welding is complete, the operator can press the foot switch 33 again for the next welding operation, or press and hold the rotary switch 32 to exit the welding mode. During welding, the cooling fan 41 continuously runs, dissipating the heat generated by the power module 11 and the electronic switch through the heat dissipation channel 42.

[0071] Fault Diagnosis and Handling Phase: During equipment operation, the fault diagnosis component 5 monitors the equipment status in real time. If electrode separation, foot switch malfunction, or temperature exceeding the preset threshold occurs, the red fault indicator 35 will light up, and the LCD screen 31 will display the corresponding fault code. Operators can take corresponding measures based on the fault code: some faults can be resolved by repeating the operation procedure; some faults require shutting down the equipment for a preset time and then restarting; some faults require waiting for the equipment to cool down before continuing operation; if the fault cannot be eliminated, technical support personnel should be contacted.

[0072] Equipment maintenance phase: After welding operations are completed, turn off the main switch 13 and disconnect the power cord; separate the welding clamp 21 from the cable 24, and perform cleaning, ultrasonic cleaning, automatic hot cleaning and sterilization in sequence, with sterilization parameters following preset standards; regularly check the wear of the copper electrode 22, and replace the copper electrode 22 after it has reached the preset number of uses or usage time; regularly check the integrity of the fuse assembly 12 and the cable 24, and replace the parts in time if there is any damage; when the equipment is not in use, it should be stored in a dry environment with preset temperature, humidity and air pressure.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold welding process, characterized in that, Includes the following steps: S1. Constant electrode pressure control: A constant pressure is applied to the welding electrode through an elastic clamping structure, so that the electrode and the workpiece are in close contact, eliminating contact gaps. S2. Precise matching of energy parameters: Adjust the number of welding pulses and the peak energy according to the material and thickness of the workpiece to achieve energy matching with the workpiece. S3. Active protection against overheating of the equipment: The heat dissipation structure dissipates the heat inside the equipment in real time, controls the temperature of the core components within the preset range, and automatically shuts down the equipment to cool down when the temperature exceeds the preset threshold.

2. The cold welding process according to claim 1, characterized in that, It also includes a real-time fault diagnosis step, which monitors the electrode contact status, energy output status and temperature status through the diagnostic module and generates corresponding fault codes.

3. The cold welding process according to claim 1, characterized in that, In the electrode pressure constant control step, the elastic clamping structure adopts a spring-limiting structure, and the spring compression stroke is limited by the limiting component.

4. The cold welding process according to claim 1, characterized in that, In the precise matching step of energy parameters, low pulse count and low energy peak value are selected for thin-walled titanium wire welding, while high pulse count and high energy peak value are selected for thick-walled titanium wire welding.

5. The cold welding process according to claim 1, characterized in that, In the active overheat protection steps of the device, the heat dissipation structure adopts a combination of forced cooling by a fan and exhaust through a channel.

6. A cold welding machine, applied to the cold welding process described in any one of claims 1-5, characterized in that, It includes a frame (1), welding components (2), control components (3), heat dissipation components (4) and fault diagnosis components (5); The power module (11) and fuse assembly (12) are fixedly installed inside the rack (1). The back of the rack (1) is provided with a main switch (13) and a power cord interface (14). The main switch (13) is connected in series between the power module (11) and the power cord interface (14). The welding assembly (2) includes a welding clamp (21), a copper electrode (22) and an electrode clamping component (23). The copper electrode (22) is symmetrically installed at the end of the welding clamp (21). The electrode clamping component (23) is sleeved on the outside of the copper electrode (22). The welding clamp (21) is electrically connected to the power module (11) through a cable (24). The control component (3) includes a liquid crystal display screen (31), a rotary switch (32) and a foot switch (33) embedded in the surface of the frame (1). The foot switch (33) is plugged into the interface on the left side of the frame (1). The heat dissipation assembly (4) includes a heat dissipation fan (41) fixed inside the frame (1) and a heat dissipation channel (42) opened on the side wall of the frame (1). The fault diagnosis component (5) is connected to the control component (3) via signal.

7. The cold welding machine according to claim 6, characterized in that, The electrode clamping component (23) includes a spring (231) and a limiting sleeve (232). The two ends of the spring (231) abut against the copper electrode (22) and the limiting sleeve (232) respectively. The limiting sleeve (232) is threadedly connected to the end of the welding clamp (21).

8. The cold welding machine according to claim 6, characterized in that, The control component (3) also includes a green working indicator light (34) and a red fault indicator light (35). The green working indicator light (34) and the red fault indicator light (35) are both embedded on the surface of the frame (1) and electrically connected to the power module (11). The liquid crystal display screen (31) is a multi-line liquid crystal display screen, and the number of characters displayed in each line is not less than a preset number.

9. The cold welding machine according to claim 6, characterized in that, A dustproof mesh (421) is snapped into the heat dissipation channel (42), and the heat dissipation fan (41) is connected to the fault diagnosis component (5) via signal. The fault diagnosis component (5) pre-stores the fault code diagnosis program, and the fault code corresponds to fault types such as electrode separation, foot switch abnormality, and electronic switch overheating.

10. The cold welding machine according to claim 6, characterized in that, The handle of the welding clamp (21) is fitted with an insulating anti-slip sleeve (211) made of silicone material, and the roughness of the coupling plane of the copper electrode (22) is not greater than a preset value. The fuse assembly (12) includes a fuse box (121) and a built-in fuse (122), the fuse box (121) being detachably connected to the back of the frame (1); The rack (1) has an IPX0 protection rating and has a preset external size and weight.

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