A portable multi-functional welding machine

By improving the fixed housing design and mechanical transmission mechanism, the problem of portable welding machines shaking and tipping on uneven surfaces has been solved, achieving a stable connection and safe operation of the equipment, and improving welding accuracy and safety.

CN224273633UActive Publication Date: 2026-05-26SHENZHEN KELAI TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN KELAI TECHNOLOGY CO LTD
Filing Date
2025-06-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing portable multi-functional welding machines cannot maintain stability on uneven working surfaces, are prone to shaking and tipping, affecting the accuracy of welding operations and potentially causing equipment damage and safety accidents.

Method used

The design features a fixed housing and includes components such as a socket, plug, power cord, cable sleeve, welding clamp, shaft, fixing strip, motor clamp, fixing block, control panel, and fixing mechanism. Through threaded connections and mechanical transmission, the welding machine line is securely fixed, while support blocks and rollers provide equipment stability and prevent shaking and tipping.

Benefits of technology

It improves the accuracy of welding operations, reduces the risk of equipment damage and safety accidents, and enhances the stability and safety of equipment in complex environments.

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Abstract

This utility model relates to the field of welding machine technology and discloses a portable multi-functional welding machine, including a fixed shell. Multiple sockets are fixedly connected to the bottom front side of the fixed shell. A plug is fixedly connected to the middle of the inner wall of each socket. A power cord is fixedly connected to one end of the outer wall of the plug. A cable protector is fixedly connected to the other end of the power cord. An insulating sleeve is fixedly connected to one side of the outer wall of the cable protector. A welding clamp is fixedly connected to the other side of the outer wall of the insulating sleeve. A rotating shaft is fixedly connected to the middle of the inner wall of the welding clamp. A fixing strip is rotatably connected to the middle of the inner wall of the rotating shaft. A bolt is threaded onto an adjacent side of the inner wall of the fixing strip. In this utility model, the sockets and plugs on the bottom front side of the fixed shell connect to an external power source and to the welding clamp. The rotating shaft, fixing strip, and bolt inside the clamp facilitate adjustment and fixation of the welding rod angle, reducing the risk of damage to the welding machine and accidents.
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Description

Technical Field

[0001] This utility model relates to the field of electric welding machine technology, and in particular to a portable multi-functional electric welding machine. Background Technology

[0002] An electric welding machine is a device that uses electrical energy to melt the welding rod or wire and the workpiece locally through a high-temperature electric arc generated by the welding equipment, thus joining them together. It mainly consists of a transformer, a rectifier, and a controller. In many practical work scenarios, such as construction sites, outdoor power facility maintenance, and bridge construction, the work locations are often not fixed and are relatively scattered. Large electric welding machines are not convenient to carry to different work locations and cannot meet the welding needs in various complex environments.

[0003] Portable multi-functional welding machines are welding devices that integrate multiple welding functions and are easy to carry and move. They are suitable for different welding materials and process requirements. Their design purpose is to meet the welding and related processing needs in various scenarios, allowing users to use them flexibly in different environments, improving work efficiency and welding quality. However, existing portable multi-functional welding machines, due to their emphasis on portability and compactness, cannot maintain stability when used on uneven work surfaces, and are prone to shaking and tipping. This not only affects the accuracy of welding operations, but also damages the welding machine and causes safety accidents. During transport, the relatively weak support structure cannot effectively protect the internal components from the impact and vibration. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a portable multi-functional electric welding machine, which aims to improve the problem that the existing technology cannot maintain stability and is prone to shaking and tipping. This not only affects the accuracy of welding operations, but also damages the welding machine and causes safety accidents.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a portable multi-functional welding machine, comprising a fixed shell, a plurality of sockets fixedly connected to the bottom front side of the fixed shell, a plug fixedly connected to the middle of the inner wall of the plurality of sockets, a power cord fixedly connected to one end of the outer wall of the plug, a cable protector fixedly connected to the other end of the power cord, an insulating sleeve fixedly connected to one side of the outer wall of the cable protector, a welding clamp fixedly connected to the other side of the outer wall of the insulating sleeve, a rotating shaft fixedly connected to the middle of the inner wall of the welding clamp, a fixing strip rotatably connected to the middle of the inner wall of the rotating shaft, a bolt threadedly connected to the adjacent side of the inner wall of the fixing strip, a motor clamp fixedly connected to one side of the outer wall of the cable protector, a fixing block fixedly connected to the adjacent side of the outer wall of the motor clamp, an operation panel fixedly connected to the top front side of the fixed shell, a button fixedly connected to the front of the outer wall of the operation panel, and a fixing mechanism rotatably connected to the right side of the outer wall of the fixed shell, the fixing mechanism being used to fix the welding machine cable.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a turntable, which is rotatably connected to the right side of the outer wall of the fixing shell. A movable groove is provided on the right side of the inner wall of the turntable. A threaded rod is threadedly connected to the middle of the inner wall of the movable groove. A gear is fixedly connected to one end of the threaded rod. A rack is slidably connected to the inner wall of the movable groove. The rack meshes with the gear. A fixing plate is fixedly connected to the other end of the outer wall of the rack. A handle is fixedly connected to one side of the outer wall of the gear.

[0008] As a further description of the above technical solution:

[0009] A heat sink is fixedly connected to the rear side of the outer wall of the fixed shell, and connection holes are provided around the outer wall of the heat sink.

[0010] As a further description of the above technical solution:

[0011] A handle is fixedly connected to the top of the outer wall of the fixed shell, and fixing holes are provided on the left and right sides of the bottom of the handle.

[0012] As a further description of the above technical solution:

[0013] A push rod is fixedly connected to the front side of the outer wall of the fixed shell, and multiple support blocks are fixedly connected to the right side of the outer wall of the fixed shell.

[0014] As a further description of the above technical solution:

[0015] Fixed pads are fixedly connected to the four corners of the bottom of the outer wall of the fixed shell, and rollers are rotatably connected to the middle of the inner wall of each of the multiple fixed pads.

[0016] As a further description of the above technical solution:

[0017] A fixing buckle is fixedly connected to the left side of the outer wall of the fixed shell, and a fixing plate is fixedly connected to the left side of the outer wall of the fixing buckle.

[0018] As a further description of the above technical solution:

[0019] A fixing box is fixedly connected to the left side of the outer wall of the fixed shell, and a display screen is fixedly connected to the front side of the outer wall of the operation panel.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the socket and plug on the front side of the bottom of the fixed shell are connected to the external power source and transmit electrical energy through the power cord. The protective sleeve provides protection, the insulating sleeve ensures safety, and the welding clamp is connected. The rotating shaft, fixing strip and bolt inside the clamp are matched to facilitate the adjustment and fixing of the welding rod angle. The motor clamp and fixing block fix the motor, maintain the stability of the structure, prevent shaking and tipping, and improve the accuracy of the welding operation through threaded connection, reducing the risk of damage to the welding machine and causing safety accidents.

[0022] 2. In this utility model, the turntable is rotatably connected to the right side of the fixed shell. Rotating the handle drives the gear and threaded rod to rotate. The threaded rod moves axially in the moving groove. Through the meshing gear and rack, the rack drives the fixed plate to slide in the moving groove. When in use, the welding machine wire is placed between the turntable and the fixed plate. Rotating the handle causes the fixed plate to squeeze the welding machine wire to complete the fixation. Rotating the handle in the opposite direction releases the wire. Attached Figure Description

[0023] Figure 1 This is a perspective view of a portable multi-functional electric welding machine proposed in this utility model;

[0024] Figure 2 This is a front view of a portable multi-functional electric welding machine proposed in this utility model;

[0025] Figure 3 This is a rear view of a portable multi-functional electric welding machine proposed in this utility model;

[0026] Figure 4 This is a partial structural schematic diagram of a portable multi-functional electric welding machine proposed in this utility model;

[0027] Figure 5 This is an exploded view of the fixing mechanism of a portable multi-functional welding machine proposed in this utility model.

[0028] Legend:

[0029] 1. Fixed shell; 2. Fixed mechanism; 201. Turntable; 202. Moving groove; 203. Gear; 204. Threaded rod; 205. Rack; 206. Fixed plate; 207. Throttle; 3. Socket; 4. Plug; 5. Power cord; 6. Cable sleeve; 7. Insulating sleeve; 8. Welding pliers; 9. Shaft; 10. Fixing strip; 11. Bolt; 12. Motor clamp; 13. Fixing block; 14. Control panel; 15. Button; 16. Grip; 17. Fixing hole; 18. Push rod; 19. Support block; 20. Fixing pad; 21. Roller; 22. Fixing box; 23. Fixing plate; 24. Fixing buckle; 25. Connecting hole; 26. Heat sink; 27. Display screen. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a portable multi-functional welding machine, comprising a fixed housing 1. Multiple sockets 3 are fixedly connected to the bottom front side of the fixed housing 1. A plug 4 is fixedly connected to the middle of the inner wall of each socket 3. A power cord 5 is fixedly connected to one end of the outer wall of the plug 4. A cable protector 6 is fixedly connected to the other end of the power cord 5. An insulating sleeve 7 is fixedly connected to one side of the outer wall of the left cable protector 6. A welding clamp 8 is fixedly connected to the other side of the outer wall of the insulating sleeve 7. A rotating shaft 9 is fixedly connected to the middle of the inner wall of the welding clamp 8. A fixing strip is rotatably connected to the middle of the inner wall of the rotating shaft 9. 10. Bolts 11 are threadedly connected to the inner wall of the fixing strip 10 on one side. Motor clamp 12 is fixedly connected to the outer wall of the right-side wire sleeve 6. Fixing block 13 is fixedly connected to the outer wall of the motor clamp 12 on one side. Operating plate 14 is fixedly connected to the top front side of the fixing shell 1. Button 15 is fixedly connected to the outer wall front side of the operating plate 14. Fixing mechanism 2 is rotatably connected to the outer right side of the fixing shell 1. Fixing mechanism 2 is used to fix the welding machine wire. Heat sink 26 is fixedly connected to the outer rear side of the fixing shell 1. Connection holes 25 are opened around the outer wall of the heat sink 26.

[0032] Specifically, socket 3 is fixed to the bottom front side of housing 1 for connecting to an external power source. Plug 4 mates with socket 3 to connect power cord 5, transmitting power to the welding machine. Cable sleeve 6 protects power cord 5. Insulating sleeve 7 ensures operational safety and connects cable sleeve 6 to welding clamp 8. Welding clamp 8 holds welding rods for welding. Rotary shaft 9 allows it to rotate to adapt to different welding needs. Fixing strip 10 is fixed and adjusted by bolts 11 to accommodate different welding rods. Motor clamp 12 and fixing block 13 stabilize motor housing 1 to prevent displacement. Buttons 15 on operation panel 14 control the welding machine's functions. Fixing mechanism 2, rotatably connected to the right side of the outer wall of housing 1, allows for flexible adjustment of position. The placement and angle of the cable provide reliable fixation, preventing the cable from getting tangled, knotted, or detaching from the equipment due to dragging or shaking during use. This improves the safety of the working environment and facilitates cable management and storage. The heat dissipation plate 26 on the rear side of the outer wall of the fixing shell 1 absorbs the heat transferred from the fixing shell by increasing the contact area with the air during the operation of the welding machine, which generates a large amount of heat. The connection holes 25 on the outer wall allow for the use of bolts 11 for connection, ensuring continuous and effective heat dissipation during equipment operation. This avoids the impact of excessive temperature on equipment performance and service life, and maintains the stable operation of the welding machine.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The fixing mechanism 2 includes a turntable 201, which is rotatably connected to the right side of the outer wall of the fixing shell 1. A moving groove 202 is provided on the right side of the inner wall of the turntable 201. A threaded rod 204 is threadedly connected to the middle of the inner wall of the moving groove 202. A gear 203 is fixedly connected to one end of the threaded rod 204. A rack 205 is slidably connected to the inner wall of the moving groove 202. The rack 205 meshes with the gear 203. A fixing plate 206 is fixedly connected to the other end of the outer wall of the rack 205. A handle 207 is fixedly connected to one side of the outer wall of the gear 203. A handle 16 is fixedly connected to the top of the outer wall of the fixing shell 1. Fixing holes 17 are provided on the left and right sides of the bottom of the handle 16. A push rod 18 is fixedly connected to the front side of the outer wall of the fixing shell 1. Multiple support blocks 19 are fixedly connected to the right side of the outer wall of the fixing shell 1.

[0034] Specifically, the fixing mechanism 2 fixes and releases the welding cable via mechanical transmission. The turntable 201 provides the base for rotation. When the operator rotates the handle 207, it drives the gear 203 and the threaded rod 204 to rotate synchronously, generating axial movement. The rack 205 meshes with the gear 203, sliding and driving the fixing plate 206 to move closer to or away from the center of the turntable 201. The welding cable is placed between the turntable 201 and the fixing plate 206. Rotating the handle 207 causes the fixing plate 206 to press the welding cable onto the turntable 201 to complete the fixation. Reverse rotation releases the welding cable. The handle 16 on the top of the outer wall of the fixing shell 1 provides the operator with a convenient gripping point. When it is necessary to move the equipment or make some close-range position adjustments, the operator can directly grasp the handle 16 to apply force, making the operation easier and less strenuous. The fixing holes 17 on the left and right sides of the bottom of the handle 16 can be used to connect additional accessories. Alternatively, fixed ropes can be used to better secure the equipment and prevent it from slipping during transport. Auxiliary tools can be installed on the handle 16 through the fixing holes 17 to expand the equipment's functionality. The push rod 18 on the front side of the outer wall of the fixed housing 1 further optimizes the equipment's movement. When the equipment needs to be moved over a large area, the operator can apply force through the push rod 18. Compared to relying solely on the handle 16, the push rod 18 provides a more comfortable force application angle and a larger operating space, reducing the operator's workload. Furthermore, the push rod 18, in conjunction with the bottom rollers 21, makes it easier to control the direction and force of the equipment during movement. Multiple support blocks 19 on the right side of the outer wall of the fixed housing 1 primarily support the fixed housing 1. When the equipment is in operation or stationary, the support blocks 19 contact the ground, increasing the contact area between the equipment and the ground, ensuring safe and stable operation.

[0035] Reference Figure 1 , Figure 2 and Figure 3 Fixing pads 20 are fixedly connected to the four corners of the bottom of the outer wall of the fixed shell 1. Rollers 21 are rotatably connected to the middle of the inner wall of each of the fixing pads 20. Fixing buckles 24 are fixedly connected to the left side of the outer wall of the fixed shell 1. Fixing discs 23 are fixedly connected to the left side of the outer wall of the fixing buckles 24. Fixing boxes 22 are fixedly connected to the left side of the outer wall of the fixed shell 1. Display screens 27 are fixedly connected to the front side of the outer wall of the operation panel 14.

[0036] Specifically, the fixed shell 1 serves as the main load-bearing structure. The fixing pads 20 at the four corners of the bottom of the outer wall act as buffers and protect the bottom of the fixed shell, preventing direct contact with the ground and causing wear. The rollers 21 connected to the middle of the inner wall of the fixing pads 20 allow the entire fixed shell 1 to be easily moved on the ground, facilitating the adjustment and handling of the equipment position. The fixing buckles 24, fixing discs 23, and fixing boxes 22 on the left side of the outer wall of the fixed shell 1 are used to connect and fix the equipment to the external structure. The fixing buckles 24 and fixing discs 23 can be connected to the fixed structure by means of buckles and bolts 11, which plays a role in securing the connection. The fixing box 22 is used to store related connecting parts, wires, etc., to ensure the cleanliness and safety of the equipment connection parts, and at the same time, it plays a certain role in protecting the internal objects. The display screen 27 on the control panel 14 serves as an important window for human-machine interaction. Operators can intuitively understand the equipment operation status by observing the content of the display screen 27, and make corresponding operations and parameter adjustments to the equipment accordingly.

[0037] Working principle: The socket 3 on the front bottom of the fixed shell 1 is used to connect to an external power source. The plug 4 cooperates with the socket 3 to connect to the power source. The power cord 5 connected to the plug 4 transmits electrical energy from the external power source to the inside of the welding machine and related components. The cable sleeve 6 protects the power cord 5 from wear, pulling, and other damage, ensuring the stability and safety of power transmission. The insulating sleeve 7 ensures the safety of the operator when using the welding clamp 8 to prevent electric shock. It also connects the cable sleeve 6 and the welding clamp 8. The welding clamp 8 is used to hold the welding rod for welding operations. The rotating shaft 9 allows the welding clamp 8 to rotate relative to the fixed bar 10, allowing the operator to flexibly adjust the posture of the welding clamp 8 according to different welding angles and positions. The fixing strip 10 is fixed to the welding clamp 8 by bolts 11. The threaded connection of the bolts 11 can be adjusted to adjust the position and tightness of the fixing strip 10 as needed to accommodate welding rods of different sizes and types. The motor clamp 12 is used to fix the motor and connect it firmly to the fixed housing 1 to ensure that the motor will not shift or shake during operation. The fixing block 13 further enhances the connection stability between the motor clamp 12 and the fixed housing 1. The buttons 15 on the operation panel 14 are the interface for the operator to control the welding machine. By pressing different buttons 15, various functions of the welding machine can be operated, such as adjusting the welding current and voltage, and controlling the start and stop of welding, thereby meeting the needs of different welding tasks.

[0038] The fixing mechanism 2 secures and releases the welding machine wire. The turntable 201 is rotatably connected to the right side of the fixed housing 1. When the operator turns the handle 207, the gear 203, which is fixedly connected to the handle 207, rotates accordingly. Since the gear 203 is fixedly connected to the threaded rod 204, the threaded rod 204 also rotates synchronously. The threaded rod 204 is threadedly connected to the middle of the inner wall of the moving groove 202. When it rotates, it will generate axial movement within the moving groove 202. The rack 205 meshes with the gear 203, and the rotation of the gear 203 will drive the rack 205 to slide linearly along the inner wall of the moving groove 202. Because the other end of the rack 205 is fixedly connected to the fixing plate 206, the sliding of the rack 205 will drive the fixing plate 206 to move closer to and further away from the center of the turntable 201 in the moving groove 202. The welding machine wire is placed in the space between the turntable 201 and the fixing plate 206. Turning the handle 207 will cause the gear 203 and the threaded rod 204 to rotate, driving the rack 205 and the fixing plate 206 to move towards the welding machine wire until the fixing plate 206 tightly presses the welding machine wire onto the turntable 201, completing the fixing. Turning the handle 207 in the opposite direction will release the fixing plate 206 and release the welding machine wire.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable multi-functional welding machine, comprising a fixed housing (1), characterized in that: Multiple sockets (3) are fixedly connected to the bottom front side of the fixed shell (1). A plug (4) is fixedly connected to the middle of the inner wall of the multiple sockets (3). A power cord (5) is fixedly connected to one end of the outer wall of the plug (4). A cable sleeve (6) is fixedly connected to the other end of the power cord (5). An insulating sleeve (7) is fixedly connected to one side of the outer wall of the cable sleeve (6). A welding clamp (8) is fixedly connected to the other side of the outer wall of the insulating sleeve (7). A rotating shaft (9) is fixedly connected to the middle of the inner wall of the welding clamp (8). The rotating shaft (9) is rotatably connected to the middle of the inner wall of the rotating shaft (9). A fixing strip (10) is attached, and a bolt (11) is threadedly connected to the inner wall of the fixing strip (10) on one side. A motor clamp (12) is fixedly connected to the outer wall of the wire sleeve (6) on the right side. A fixing block (13) is fixedly connected to the outer wall of the motor clamp (12) on one side. An operating plate (14) is fixedly connected to the top front side of the fixing shell (1). A button (15) is fixedly connected to the outer front side of the operating plate (14). A fixing mechanism (2) is rotatably connected to the outer right side of the fixing shell (1). The fixing mechanism (2) is used to fix the welding machine wire.

2. The portable multi-functional welding machine according to claim 1, characterized in that: The fixing mechanism (2) includes a turntable (201), which is rotatably connected to the right side of the outer wall of the fixing shell (1). A moving groove (202) is provided on the right side of the inner wall of the turntable (201). A threaded rod (204) is threadedly connected to the middle of the inner wall of the moving groove (202). A gear (203) is fixedly connected to one end of the threaded rod (204). A rack (205) is slidably connected to the inner wall of the moving groove (202). The rack (205) meshes with the gear (203). A fixing plate (206) is fixedly connected to the other end of the outer wall of the rack (205). A throttle (207) is fixedly connected to one side of the outer wall of the gear (203).

3. A portable multi-functional welding machine according to claim 1, characterized in that: A heat sink plate (26) is fixedly connected to the rear side of the outer wall of the fixed shell (1), and connection holes (25) are provided around the outer wall of the heat sink plate (26).

4. A portable multi-functional welding machine according to claim 1, characterized in that: A handle (16) is fixedly connected to the top of the outer wall of the fixed shell (1), and a fixing hole (17) is provided on the left and right sides of the bottom of the handle (16).

5. A portable multi-functional welding machine according to claim 1, characterized in that: A push rod (18) is fixedly connected to the front side of the outer wall of the fixed shell (1), and a plurality of support blocks (19) are fixedly connected to the right side of the outer wall of the fixed shell (1).

6. A portable multi-functional welding machine according to claim 1, characterized in that: Fixing pads (20) are fixedly connected to the four corners of the bottom of the outer wall of the fixed shell (1), and rollers (21) are rotatably connected to the middle of the inner wall of each of the fixing pads (20).

7. A portable multi-functional welding machine according to claim 1, characterized in that: A fixing buckle (24) is fixedly connected to the left side of the outer wall of the fixing shell (1), and a fixing plate (23) is fixedly connected to the left side of the outer wall of the fixing buckle (24).

8. A portable multi-functional welding machine according to claim 1, characterized in that: A fixing box (22) is fixedly connected to the left side of the outer wall of the fixing shell (1), and a display screen (27) is fixedly connected to the front side of the outer wall of the operation panel (14).