Handheld lithium electric welding machine

Abstract

The invention discloses a handheld lithium electric welding machine which comprises a gun body, a lithium ion battery and a lithium ion battery. A handle is arranged at the bottom of the gun body, and a power line socket is arranged in the handle; a rear cover is further arranged at one end of the gun body. The device is small in size and high in universality, does not depend on a fixed power supply, and facilitates outdoor operation.

Description

Technical Field

[0001] The invention relates to the technical field of welding machines, and more specifically to a handheld lithium welding machine. Background Art

[0002] A handheld welding machine is a portable and flexible welding device that connects metal materials by heating the metal to the melting point through electric energy. Its principle is to use electrodes to guide the current to generate arc light, and the arc discharge generates high temperature to melt the metal to complete welding. It is widely used in fields such as construction, manufacturing, and automobiles, such as steel bar connection, metal processing, and body repair. Its core advantages lie in lightweight design and intelligent control, supporting welding of multiple materials such as carbon steel, stainless steel, and aluminum alloy, and is especially suitable for thin plates and complex workpieces. The advantages of traditional handheld welding machines are flexibility, simple operation, and adjustable current; the disadvantages are large volume, low versatility, and dependence on a fixed power source. When working outdoors, it is difficult to obtain power, and it cannot move long distances for operation, thus affecting the use of handheld welding machines.

[0003] Therefore, there is an urgent need in the market for a handheld lithium welding machine with a small volume, strong versatility, no dependence on a fixed power source, and convenient for outdoor work. Summary of the Invention

[0004] The invention provides a handheld lithium welding machine to solve the problems existing in the prior art.

[0005] To achieve the above object, an embodiment of the invention provides a handheld lithium welding machine, including: a gun body, with a controller arranged inside the gun body; a handle is arranged at the bottom of the gun body, and a power cord socket is arranged inside the handle; a rear cover is also arranged at one end of the gun body.

[0006] Preferably, there are grooves on the edge of the power cord socket to prevent the plug from being inserted reversely.

[0007] Preferably, a muzzle is arranged at one end of the gun body, and a socket is arranged on the muzzle for inserting the welding rod.

[0008] Preferably, a locking nut is also arranged on one side of the muzzle for locking the welding rod.

[0009] Preferably, a current adjustment knob is also arranged on the top of the gun body; an indicator light is also arranged adjacent to the current adjustment knob.

[0010] Preferably, a display screen is arranged at the center position of the rear cover; heat dissipation bars are arranged around the display screen; a heat dissipation fan is also arranged inside the rear cover.

[0011] Preferably, a switch is also arranged on the handle, and the switch is electrically connected to a connector inside the handle.

[0012] Preferably, a connecting wire is also connected to the bottom of the handle; the other end of the connecting wire is fixedly connected with a welding clamp.

[0013] Preferably, a conductive rod is further inserted inside the muzzle. A through hole is provided at one end of the conductive rod connected to the muzzle, and the through hole is in coaxial contact with the socket on the muzzle.

[0014] Compared with the prior art, the invention has the following advantages:

[0015] The invention has a sandwich structure design (outer shell - heat dissipation layer - circuit board layered layout) with reasonable distribution, effectively reducing the volume of the handheld lithium welding machine.

[0016] A power cord socket is provided at the bottom of the handheld lithium welding machine, which has an adaptive power management module (supporting multiple specifications of batteries such as 48V / 60V). The setting of the power cord socket can quickly replace the battery to achieve true all-weather outdoor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0018] Figure 1 The drawings are schematic structural diagrams of the invention.

[0019] Figure 2 The drawings are schematic exploded structural diagrams of the invention.

[0020] Figure 3 The drawings are schematic internal structural diagrams of the invention.

[0021] Reference numerals: 1, gun body; 2, handle; 3, connecting wire; 4, welding clamp; 5, locking nut; 6, current adjustment knob; 7, power cord socket; 8, controller; 9, muzzle; 10, transformer; 11, indicator light; 12, conductive rod; 13, cooling fan; 14, display screen; 15, rear cover; 16, capacitor; 17, switch; 18, connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] For the convenience of those skilled in the art to understand, the following will combine text and drawings to illustrate multiple embodiments of this patent. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details in the specification should not be used to limit this patent. That is to say, in some embodiments of this patent, these practical details are not necessary. In addition, for the convenience of understanding, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

[0023] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this patent.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this patent, "a plurality" means two or more, unless otherwise specifically defined.

[0025] In this patent, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0026] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this patent.

[0027] Please refer to the Figures 1-3 accompanying drawings, which disclose a handheld lithium welding machine, including: a gun body 1, inside which there is a controller 8; at the bottom of the gun body 1 there is a handle 2, and inside the handle 2 there is a power cord socket 7; at one end of the gun body 1 there is also a rear cover 15.

[0028] The controller 8 inside the gun body 1 includes a circuit board, a heat dissipation layer, capacitors, and a transformer. The built-in controller reduces external wiring, achieves an integrated design of the welding machine, and improves the portability of the welding machine.

[0029] The handle 2 has a curved design, and the material is preferably anti-slip rubber, which enhances the holding comfort. The design conforms to ergonomics. The design of the handle 2 is convenient for holding. The inside of the handle 2 is reweighted, and the center of gravity balance optimizes the operation stability.

[0030] The rear cover 15 on the gun body 1 is detachable, which is convenient for cleaning or repairing the internal heat dissipation components (such as the heat dissipation fan 13).

[0031] To further optimize the above technical solution, there is a groove on the edge of the power cord socket 7 to prevent the plug from being inserted reversely.

[0032] The groove limiting structure on the edge of the power cord socket 7 has a groove depth of 2 - 3 mm, which is adapted to prevent misinsertion of the power plug, avoiding short - circuit or equipment damage caused by reverse plugging. The internal contacts of the power cord socket 7 are gold - plated to reduce the contact resistance.

[0033] The power cord socket 7 is used to connect the charger to charge the built - in lithium battery, which is the core interface for energy replenishment of the device. The power supply is provided through an external power cord connected to an external power source. The power cord can be replaced with different lengths according to the actual situation of the user. The external power source can be a mains adapter or a mobile power source to achieve charging while using or direct power supply without a battery, shortening the charging time and improving the flexibility of battery life.

[0034] The electric welding machine has an adaptive power management module (supporting multiple specifications of lithium batteries such as 48V / 60V). The setting of the power cord socket 7 allows for quick battery replacement, enabling true all - weather outdoor operation.

[0035] The power cord socket 7 can also support connecting to a computer or a mobile phone for updating system firmware or transmitting welding parameter data.

[0036] To further optimize the above technical solution, one end of the gun body 1 is provided with a muzzle 9, and there is a socket on the muzzle 9 for inserting the welding rod.

[0037] The material of the muzzle 9 is preferably high - temperature - resistant ceramic, with a temperature resistance of up to 1200°C. The socket on the muzzle 9 can quickly replace the welding rod, and the standardized socket supports welding rods of different diameters (such as 2.5 mm / 3.2 mm) to meet diverse welding requirements.

[0038] To further optimize the above technical solution, a locking nut 5 is also provided on one side of the muzzle 9 for locking the welding rod.

[0039] The locking nut 5 can prevent the welding rod from falling off due to welding vibration. There is a connecting rod inside the locking nut 5. Rotating the locking nut 5 can control the horizontal movement of the connecting rod inside the muzzle 9 to adapt to the clamping force requirements of welding rods of different diameters. The surface of the locking nut 5 is knurled to enhance the manual tightening friction. The internal gasket of the locking nut 5 is made of copper alloy material to improve conductivity and clamping stability.

[0040] To further optimize the above technical solution, a current adjustment knob 6 is also provided on the top of the gun body 1; an indicator light 11 is also provided adjacent to the current adjustment knob 6.

[0041] The current adjustment knob 6 can be manually adjusted finely, supporting stepless adjustment of the current from 10 A to 200 A. The current adjustment knob 6 is designed with a damping feeling to avoid accidental adjustment.

[0042] The indicator light 11 is a high-brightness LED, clearly visible in strong light environments. The indicator light 11 can provide real-time feedback on the status of the welding machine: the working status is displayed through color / flashing frequency. For example, red indicates overload, and green indicates normal operation.

[0043] To further optimize the above technical solution, a display screen 14 is provided at the center of the rear cover 15; heat dissipation bars are provided around the display screen 14; a cooling fan 13 is also provided inside the rear cover 15.

[0044] The display screen 14 can display parameters such as current, voltage, and remaining power in real time.

[0045] The cooling fan 13 is a silent brushless motor with a rotation speed of 5000 rpm and a noise level ≤ 45 dB. The heat dissipation bars and the cooling fan 13 work together to control the internal temperature below 60 °C when the ambient temperature ≤ 40 °C.

[0046] To further optimize the above technical solution, a switch 17 is also provided on the handle 2, and the switch 17 is electrically connected to the connector 18 inside the handle 2.

[0047] The switch 17 is set at a position accessible by the thumb, facilitating single-handed operation by the user. The switch 17 integrates a Hall sensor with a quick response of 0.5 seconds. Pressing and holding the switch 17 for 3 seconds can turn on / off the device, and pressing it briefly can switch the welding mode.

[0048] To further optimize the above technical solution, a connecting wire 3 is also connected to the bottom of the handle 2; the other end of the connecting wire 3 is fixedly connected to a welding clamp 4.

[0049] The length of the connecting wire 3 is 3 - 5 meters, supporting welding scenarios away from the power source. The welding clamp 4 is made of all-copper material, with an insulating rubber sleeve on the handle. The maximum clamping force is 50 N, and it can adapt to workpieces of different shapes.

[0050] To further optimize the above technical solution, a conductive rod 12 is also inserted inside the muzzle 9, and a through hole is provided at one end of the conductive rod 12 in contact with the muzzle 9. The through hole is in coaxial contact with the socket on the muzzle 9.

[0051] The material of the conductive rod is preferably purple copper with a conductivity ≥ 98%. The through hole on the conductive rod 12 is in coaxial contact with the socket on the muzzle 9, improving the conductive efficiency, ensuring the axial fixation of the welding rod, and preventing radial deviation. The other end of the conductive rod 12 is flat-designed, and the flat end increases the area and reduces the resistance loss.

[0052] The working principle of the handheld lithium welding machine provided by the present invention is as follows:

[0053] Insert the welding rod into the extraction port on the muzzle 9, and insert the bottom of the welding rod into the bottom of the through hole on the conductive rod 12. Then rotate the locking nut 5 to lock the welding rod, and clamp the welding clamp 4 onto the workpiece to be welded. Select a charging cable of appropriate length, connect one end to the power supply socket 7 and the other end to the power supply. After power-on, the indicator light 11 lights up green. After the controller 8 is powered on, it transmits the current through the conductive rod 12, making the welding rod carry positive electricity, and the negative electricity is transmitted to the workpiece to be welded through the welding clamp 4 on the connection line 3. Place the welding rod at the joint to be welded, press the switch to ignite the arc. The arc generates high temperature, melts the welding rod, and connects it to the gap of the workpiece to be welded.

[0054] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. Handheld lithium welding machine, characterized in that, Comprising: A gun body (1) with a controller (8) provided inside; a handle (2) is provided at the bottom of the gun body (1), and a power cord socket (7) is provided inside the handle (2); a rear cover (15) is further provided at one end of the gun body (1).

2. The hand-held lithium welding machine according to claim 1, wherein, There are grooves on the edge of the power cord socket (7) to prevent the plug from being inserted reversely.

3. The hand-held lithium welding machine according to claim 1, characterized in that, A muzzle (9) is provided at one end of the gun body (1), and a socket is provided on the muzzle (9) for inserting a welding rod.

4. The hand-held lithium welding machine according to claim 3, characterized in that, A locking nut (5) is further provided on one side of the muzzle (9) for locking the welding rod.

5. The hand-held lithium welding machine according to claim 1, wherein A current adjustment knob (6) is further provided on the top of the gun body (1); an indicator light (11) is further provided adjacent to the current adjustment knob (6).

6. The hand-held lithium welding machine according to claim 1, wherein A display screen (14) is provided at the center position of the rear cover (15); heat dissipation bars are provided around the display screen (14); a heat dissipation fan (13) is further provided inside the rear cover (15).

7. The hand-held lithium welding machine according to claim 1, wherein, A switch (17) is further provided on the handle (2), and the switch (17) is electrically connected to a connector (18) inside the handle (2).

8. The hand-held lithium welding machine according to claim 1, wherein A connecting wire (3) is further connected to the bottom of the handle (2); the other end of the connecting wire (3) is fixedly connected to a welding clamp (4).

9. The hand-held lithium welding machine according to claim 1, characterized in that, A conductive rod (12) is further inserted inside the muzzle (9), and a through hole is provided at one end of the conductive rod (12) in contact with the muzzle (9), and the through hole is in coaxial contact with the socket on the muzzle (9).

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