Handheld electric welding machine

Abstract

The utility model discloses a handheld electric welding machine which comprises a shell assembly, an air inlet cavity is formed in the shell assembly in a penetrating mode. The accommodating cavity assembly is arranged on one side of the shell assembly; the control display assembly and the electric welding core assembly are respectively arranged in the shell assembly; the cooling fan is arranged in the shell assembly and arranged on the side edge of the electric welding machine core assembly, and the position of the air inlet end of the cooling fan corresponds to the position of the air inlet cavity. The welding wire feeding assembly is arranged in the shell assembly, is arranged on the side edge of the accommodating cavity assembly and is electrically connected with the electric welding core assembly; the welding gun head penetrates through the shell assembly and is detachably and electrically connected to the welding wire feeding assembly; and the filter screen is detachably connected to the air inlet cavity. According to the handheld electric welding machine, the filter screen is detachably arranged at the air inlet end of the cooling fan, so that the problem that the number of machine faults is large due to the fact that dust of an existing handheld electric welding machine is difficult to clean is effectively solved.

Description

Technical Field

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

[0002] An electric welding machine uses positive and negative electrodes to generate an electric arc. The high temperature of the arc melts the welding material and workpiece, and after cooling, the workpieces are joined together. It mainly consists of a welding power source and a wire feeding system. The welding power source of the consumable electrode arc welding machine provides the electrical energy required for welding and generally has a decreasing external characteristic, which helps maintain the stability of the arc during welding. When the arc length changes, the current and voltage output of the power source will automatically adjust accordingly to maintain stable arc combustion. The wire feeding system is responsible for continuously feeding the welding wire into the welding zone. The welding wire, as filler metal, melts under the heat of the arc and fills the joint of the workpiece, forming a weld. The wire feeding speed can be adjusted according to the requirements of the welding process to ensure that the melting rate of the welding wire matches the welding speed, thereby obtaining good weld quality.

[0003] CN220073520U discloses a handheld fully automatic electric welding machine, including a housing, a core structure, a wire feeding mechanism, and an input / output mechanism. The housing has a double-sided spliced ​​structure and includes a base, a handle, and a head. The core structure is connected to the inside of the base and includes a welding circuit mechanism and a fan. The wire feeding mechanism includes a wire feed box, a wire feeder, and a welding torch. The wire feed box is connected to the outside of the head, the wire feeder is connected to the inside of the head, and the welding torch is connected to one end of the top of the housing. The welding wire spool is connected to the wire feed box, and the welding wire passes through the housing and then through the wire feeder into the welding torch. The input / output mechanism is connected to the welding circuit mechanism and the welding torch. A start switch is installed on the handle of the housing. While this technical solution is small in size and easy to carry, handheld welding machines are generally used in dusty environments, where external dust can easily enter the machine and cause malfunctions. Furthermore, the welding torch head is fixed to the casing, making it inconvenient for users to change welding wire. Therefore, a handheld welding machine is provided to solve these problems. Utility Model Content

[0004] One of the purposes of this utility model is to provide a handheld welding machine to solve the problem that existing handheld welding machines have too much dust inside, which is difficult to clean and, over time, can easily cause poor heat dissipation, leading to overheating protection or damage.

[0005] This utility model relates to a handheld welding machine, which can be achieved through the following technical solutions:

[0006] This utility model discloses a handheld welding machine, comprising a housing assembly with an air inlet cavity extending through it; a receiving cavity assembly disposed on one side of the housing assembly, with a welding wire spool detachably and rotatably disposed within the receiving cavity assembly; a control and display assembly and a welding core assembly, both of which are respectively disposed through the housing assembly; a cooling fan disposed in the housing assembly and on the side of the welding core assembly, with the air inlet end of the cooling fan corresponding to the position of the air inlet cavity; a welding wire feeding assembly disposed in the housing assembly and on the side of the receiving cavity assembly, and electrically connected to the welding core assembly; a welding torch head detachably and electrically connected to the welding wire feeding assembly through the housing assembly; and a filter screen detachably connected to the air inlet cavity.

[0007] The control and display component is electrically connected to the welding core assembly, the cooling fan, and the welding wire feeding assembly.

[0008] In one embodiment, a slot is provided on the side of the air inlet cavity, and the filter screen is detachably snapped into the slot.

[0009] In one embodiment, the welding core assembly is provided with a core output interface that penetrates the housing assembly; the welding core assembly is electrically connected to the welding wire feeding assembly via a conductive strip.

[0010] In one embodiment, the welding wire feeding assembly includes a fixed base fixedly disposed in the housing assembly; a drive motor disposed on the fixed base; a driving wheel and a driven wheel rotatably disposed on the fixed base, the driving wheel being drivenly connected to the drive motor; a first guide tube and a second guide tube fixedly disposed on the fixed base, the first guide tube being disposed on one side of the receiving cavity assembly, the second guide tube being electrically connected to the welding core assembly through the conductive strip, and the welding gun head being detachably electrically connected to the second guide tube.

[0011] In one embodiment, the conductive strip is made of copper, with one end electrically connected to the welding core assembly and the other end electrically connected to the welding wire feeding assembly. The middle part of the conductive strip is fixedly installed in the housing assembly by fixing screws.

[0012] In one embodiment, the housing assembly includes a main housing, which is a hollow cavity; and a flip cover plate rotatably disposed on the main housing, the flip cover plate being made of transparent material and its position corresponding to the position of the welding wire feeding assembly.

[0013] In one embodiment, two connecting buckles are symmetrically arranged on the main housing, and the positions of the two connecting buckles correspond to the positions where the welding gun head penetrates the main housing, which can fix the welding gun head on the main housing.

[0014] In one embodiment, the cavity assembly includes a cavity body fixedly connected to the main housing; and a cover plate detachably disposed on the cavity body, the cover plate being made of a transparent material.

[0015] In one embodiment, the control display component includes a circuit board fixedly disposed in the housing assembly; the circuit board is electrically connected to the welding core assembly, the cooling fan, and the welding wire feeding assembly; and an adjustment knob and a display screen are respectively inserted through the housing assembly and electrically connected to the circuit board.

[0016] In one embodiment, the handheld welding machine of the present invention further includes a switch button and an electrical connector, both of which pass through the housing assembly and are electrically connected to the control and display assembly; the position of the switch button corresponds to the hand grip position; an input switch is electrically connected between the electrical connector and the control and display assembly.

[0017] Compared with the prior art, the beneficial effects of this handheld welding machine are as follows:

[0018] This utility model discloses a handheld welding machine. A detachable filter is installed on the air inlet of the cooling fan. This filter effectively prevents external dust from entering the housing assembly, thus extending the service life of the handheld welding machine and solving the problem of poor heat dissipation caused by excessive dust in existing handheld welding machines. Simultaneously, the welding torch head is detachably connected to a second guide tube, which is electrically connected to the welding machine core assembly via a conductive strip. This facilitates the replacement of welding wire and the storage of the welding torch head, while also providing an electrical connection between the welding machine core assembly and the welding torch head. This reduces the storage space required for the handheld welding machine and improves the user experience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a three-dimensional structural diagram of a handheld electric welding machine according to the present invention;

[0021] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of a handheld welding machine according to the present invention;

[0022] Figure 3 This is an exploded structural diagram of a handheld electric welding machine according to the present invention;

[0023] Figure 4 This is an exploded structural diagram of a handheld welding machine according to another perspective of the present invention, including a housing assembly, a receiving cavity assembly, and a welding wire feeding assembly;

[0024] Figure 5 yes Figure 4 Exploded view of the housing assembly and the receiving cavity assembly;

[0025] Figure 6 yes Figure 4 The diagram shows a three-dimensional structure of the welding wire feeding assembly.

[0026] The diagram indicates the following: 10, handheld welding machine; 11, housing assembly; 111, main housing; 1111, connecting clip; 1112, air inlet; 11121, slot; 1113, through hole; 1114, heat dissipation hole; 112, flip cover; 12, receiving cavity assembly; 121, receiving cavity body; 1211, rotating shaft; 122, cover plate; 1221, connecting screw; 13, control and display assembly; 131, circuit board; 132, adjustment knob. 133, Display screen; 14, Welding mechanism assembly; 141, Mechanism output interface; 142, Conductive strip; 1421, Fixing screw; 15, Cooling fan; 16, Welding wire feeding assembly; 161, Mounting base; 162, Drive motor; 163, Drive wheel; 164, Driven wheel; 165, First guide tube; 166, Second guide tube; 17, Welding torch head; 18, Filter screen; 19, Switch button; 20, Electrical connector; 201, Input switch. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] Please see Figures 1-4 As shown, the handheld welding machine 10 of this utility model mainly includes a housing assembly 11, a receiving cavity assembly 12, a control and display assembly 13, a welding core assembly 14, a cooling fan 15, a welding wire feeding assembly 16, a welding torch head 17, a filter screen 18, a switch button 19, and an electrical connector 20; the housing assembly 11 is a hollow cavity; the receiving cavity assembly 12 is disposed on one side of the housing assembly 11, and the welding wire spool is detachably and rotatably disposed in the receiving cavity assembly 12, thereby providing welding wire for the handheld welding machine 10; the control and display assembly 13, the welding core assembly 14, and the welding core assembly 15 are all included. Components 14 are respectively disposed through the housing assembly 11. The control and display assembly 13 is electrically connected to the welding core assembly 14, the cooling fan 15, the welding wire feeding assembly 16, the switch button 19, and the electrical connector 20. The output mechanism is detachably electrically connected through the housing assembly 11 to the welding core assembly 14. The cooling fan 15 is disposed in the housing assembly 11 and located on the side of the welding core assembly 14, and it actively dissipates the heat generated by the welding core assembly 14. The welding wire feeding assembly 16 is disposed in the housing assembly 11 and located in the housing... The cavity assembly 12 is electrically connected to the welding core assembly 14 on its side. The welding wire feeding assembly 16 automatically feeds the welding wire into the cavity assembly 12. The welding gun head 17 penetrates the housing assembly 11 and is detachably electrically connected to the welding wire feeding assembly 16. The welding wire on the welding wire feeding assembly 16 can move through the welding gun head 17. The welding gun head 17 cooperates with the welding core assembly 14 to perform welding operations. The filter screen 18 is detachably connected to the housing assembly 11 and is located at the air inlet of the cooling fan 15. It filters the air entering the housing assembly 11. The air is filtered to effectively prevent dust from the outside from entering the housing assembly 11, thereby extending the service life of the welding core assembly 14 to a certain extent. The switch button 19 is movably and continuously mounted on the housing assembly 11 and corresponds to the hand grip position, making it convenient for users to press the switch button 19. The electrical connector 20 is continuously mounted on the housing assembly 11, with one end of the connecting wire detachably and electrically connected to the electrical connector 20, and the other end detachably and electrically connected to an external power source, thereby enabling power supply to the handheld welding machine 10.

[0030] Please see Figures 1-5As shown, in this embodiment, the housing assembly 11 includes a main housing 111 and a flip cover 112; the main housing 111 is a hollow cavity; the flip cover 112 is rotatably mounted on the main housing 111 and its position corresponds to the position of the welding wire feeding assembly 16. This design facilitates the replacement of the welding wire; preferably, the flip cover 112 is made of transparent material, so as to facilitate the observation of the working status of the welding wire feeding assembly 16.

[0031] Please see Figure 4 and Figure 5 As shown, in this embodiment, two connecting buckles 1111 are symmetrically arranged on the main housing 111. The positions of the two connecting buckles 1111 correspond to the positions where the welding gun head 17 penetrates the main housing 111, and they can fix the welding gun head 17 on the main housing 111. An air inlet cavity 1112 is provided through the main housing 111 at the position corresponding to the air inlet end of the cooling fan 15. A slot 11121 is provided on the side of the air inlet cavity 1112. The filter screen 18 is detachably engaged in the slot 11121, so that the filter screen 18 is detachable. Fixedly connected to the air inlet cavity 1112, the filter screen 18 filters the air entering the main housing 111, and facilitates the cleaning of dust on the filter screen 18. The main housing 111 is also provided with multiple through holes 1113 and multiple heat dissipation holes 1114. The control display component 13, welding gun head 17, switch button 19, and electrical connector 20 pass through the main housing 111 through the corresponding through holes 1113, and the heat dissipation holes 1114 diffuse the heat in the main housing 111 to the external environment.

[0032] Please see Figures 1-5 As shown, in this embodiment, the receiving cavity assembly 12 includes a receiving cavity body 121 and a cover plate 122. The receiving cavity body 121 is fixedly connected to the main housing 111, and the welding wire spool is rotatably disposed in the receiving cavity body 121. The cover plate 122 is detachably disposed on the receiving cavity body 121, and the two together form a hollow cavity, thereby limiting the position of the welding wire spool. Effectively, the cover plate 122 is made of transparent material, which facilitates observation of the usage status of the welding wire on the welding wire spool in the receiving cavity assembly 12. Specifically, a rotating shaft 1211 is rotatably disposed in the receiving cavity body 121, and the welding wire spool is rotatably disposed on the rotating shaft 1211. A connecting screw 1221 is provided through one end of the cover plate 122, and the connecting screw 1221 is detachably threadedly connected to the rotating shaft 1211, thereby fixing the cover plate 122 on the receiving cavity body 121.

[0033] Please see Figures 1-4As shown, in this embodiment, the control and display component 13 includes a circuit board 131, an adjustment knob 132, and a display screen 133. The circuit board 131 is fixedly disposed in the housing component 11. The adjustment knob 132 and the display screen 133 respectively pass through the housing component 11 and are electrically connected to the circuit board 131. The handheld welding machine 10 is operated by adjusting the knob 132 to set functions, while the display screen 133 displays the operation of the handheld welding machine 10 in real time. Specifically, the circuit board 131 is electrically connected to the adjustment knob 132, the display screen 133, the welding machine core component 14, the cooling fan 15, the welding wire feeding component 16, the switch button 19, and the electrical connector 20. The control technology used is all existing technology, so the specific control process and model used are not described here, as long as they meet the requirements of this application.

[0034] Please see Figures 2-4 As shown, in this embodiment, the welding core assembly 14 also adopts the prior art, so its specific working process and model are not described in detail here, as long as they meet the requirements of this application; the welding core assembly 14 is provided with a core output interface 141, which penetrates through the housing assembly 11, and the output mechanism is detachably electrically connected to the core output interface 141; the welding core assembly 14 is electrically connected to the welding wire feeding assembly 16 through a conductive strip 142. Specifically, the conductive strip 142 is made of copper, one end of which is electrically connected to the welding core assembly 14, and the other end of which is electrically connected to the welding wire feeding assembly 16, and the middle part is fixedly installed in the housing assembly 11 by a fixing screw 1421.

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, in this embodiment, the welding wire feeding assembly 16 includes a fixed base 161, a drive motor 162, a drive wheel 163, a driven wheel 164, a first guide tube 165, and a second guide tube 166. The fixed base 161 is fixedly disposed in the housing assembly 11. The drive motor 162 is disposed on the fixed base 161. The drive wheel 163 and the driven wheel 164 are rotatably disposed on the fixed base 161. The drive wheel 163 is connected to the drive motor 162 for transmission. The drive motor 162 drives the drive wheel 163 to rotate, thereby driving the welding wire disposed between the drive wheel 163 and the driven wheel 164 to move. The first guide tube 165... 5. The second guide tube 166 is fixedly mounted on the fixed base 161. The first guide tube 165 is mounted on one side of the receiving cavity assembly 12. The welding wire on the welding wire spool in the receiving cavity assembly 12 passes through the first guide tube 165, the driving wheel 163 and the driven wheel 164 in sequence. The second guide tube 166 extends into the welding gun head 17. The second guide tube 166 is electrically connected to the welding core assembly 14 through the conductive strip 142. The welding gun head 17 is detachably electrically connected to the second guide tube 166. The welding core assembly 14 is electrically connected to the welding gun head 17 in sequence through the conductive strip 142 and the second guide tube 166.

[0036] Please see Figures 2-4 As shown, in this embodiment, the switch button 19 and the electrical connector 20 pass through the housing assembly 11 through the corresponding through holes 1113. An input switch 201 is electrically connected between the electrical connector 20 and the circuit board 13. The input switch 201 controls the electrical connection between the electrical connector 20 and the circuit board 13, thereby improving the safety performance of the handheld welding machine 10 to a certain extent.

[0037] It should be noted that the specific working process of the handheld welding machine 10 of this utility model is as follows: First, the output mechanism is connected to the output interface 141 of the core assembly. Then, the two ends of the connecting wire are connected to the external power supply and the electrical connector 20 respectively to supply power to the handheld welding machine 10. Then, the welding gun head 17 and the output mechanism are brought close to the workpiece to be welded. The end of the output mechanism connected to the welding core assembly 14 is the negative pole, and the end of the welding gun head 17 connected to the welding core assembly 14 in sequence through the first guide tube 165 and the conductive strip 142 is the positive pole. By pressing the switch button 19, the welding wire on the welding gun head 17 contacts the workpiece and is quickly pulled away to generate an electric arc. The heat of the electric arc melts the welding wire, thereby realizing the welding operation. The welding wire feeding assembly 16 can realize the automatic feeding of welding wire, and the filter screen 18 can filter the air entering the housing assembly 11.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hand-held electric welder characterized by, include: The housing assembly has an air inlet cavity extending through it; A receiving cavity assembly is disposed on one side of the housing assembly, and a welding wire spool is detachably and rotatably disposed in the receiving cavity assembly; The control display component and the welding mechanism component are respectively disposed within the housing component; A cooling fan is disposed in the housing assembly and on the side of the welding machine core assembly, and the position of the air inlet of the cooling fan corresponds to the position of the air inlet cavity; A welding wire feeding assembly is disposed in the housing assembly and on the side of the receiving cavity assembly, and the welding wire feeding assembly is electrically connected to the welding core assembly; A welding torch tip, which is detachably electrically connected to the welding wire feeding assembly through the housing assembly; A filter screen, which is detachably connected to the air inlet cavity; The control and display component is electrically connected to the welding core assembly, the cooling fan, and the welding wire feeding assembly.

2. A hand-held electric welder as claimed in claim 1, wherein The air inlet cavity has a slot on its side, and the filter screen is detachably snapped into the slot.

3. A hand-held electric welder as defined in claim 1, wherein The welding core assembly is provided with a core output interface that penetrates the housing assembly; the welding core assembly is electrically connected to the welding wire feeding assembly via a conductive strip.

4. A hand-held electric welder as claimed in claim 3 wherein, The welding wire feeding assembly includes a fixing base, which is fixedly disposed in the housing assembly; and a drive motor disposed on the fixing base. A driving wheel and a driven wheel are rotatably mounted on the fixed base, and the driving wheel is connected to the drive motor. A first guide tube and a second guide tube are fixedly disposed on the fixed base. The first guide tube is disposed on one side of the receiving cavity assembly. The second guide tube is electrically connected to the welding core assembly through the conductive strip. The welding gun head is detachably electrically connected to the second guide tube.

5. A hand-held electric welder as claimed in claim 4 wherein, The conductive strip is made of copper, with one end electrically connected to the welding core assembly and the other end electrically connected to the welding wire feeding assembly; the middle part of the conductive strip is fixedly installed in the housing assembly by fixing screws.

6. A hand-held electric welder as defined in claim 1, wherein The housing assembly includes a main housing, which is a hollow cavity; Rotate the flip cover plate, which is made of transparent material, on the main housing, and its position corresponds to the position of the welding wire feeding assembly.

7. A hand-held electric welder as claimed in claim 6 wherein, Two connecting buckles are symmetrically arranged on the main housing. The positions of the two connecting buckles correspond to the positions where the welding gun head penetrates the main housing, and they can fix the welding gun head on the main housing.

8. A hand-held electric welder as defined in claim 6, wherein, The cavity assembly includes a cavity body fixedly connected to the main housing; and a cover plate detachably disposed on the cavity body, the cover plate being made of a transparent material.

9. A hand-held electric welder according to any one of claims 1 to 8, wherein, The control and display assembly includes a circuit board, which is fixedly disposed in the housing assembly; the circuit board is electrically connected to the welding core assembly, the cooling fan, and the welding wire feeding assembly; and an adjustment knob and a display screen, which pass through the housing assembly and are electrically connected to the circuit board.

10. A handheld welding machine according to any one of claims 1-8, characterized in that, It further comprises a switch button and an electric connector, both of which pass through the shell assembly and are electrically connected with the control display assembly respectively; the switch button is located at the position corresponding to the hand-holding position; the electric connector is electrically connected with the control display assembly through an input switch.

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