CN216298227U

CN216298227U - Handheld integrated welding machine with wire feeding structure and convenient for replacing welding wire

Info

Publication number: CN216298227U
Application number: CN202122764139.1U
Authority: CN
Inventors: 徐金勇; 陈雄升
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-15
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a handheld integrated welding machine with a wire feeding structure and convenient for replacing a welding wire, which belongs to the field of welding machines and comprises a welding machine main body, wherein an electronic component is arranged in the welding machine main body, a welding nozzle component is arranged at the head part of the welding machine main body, a welding wire disc, a wire feeding component and a welding wire conveying pipe are fixed at the outer side of the welding machine main body, the welding wire is wound on the welding wire disc, the wire feeding component is driven by a driving device, the welding wire on the welding wire disc is fed into the welding wire conveying pipe by the wire feeding component, the welding wire conveying pipe is bent and inserted into the head part of the welding machine main body, the insertion end of the welding wire conveying pipe is connected with the welding nozzle component, and the side surface of the head part of the welding machine main body is provided with an insertion hole for inserting the welding wire conveying pipe.

Description

Handheld integrated welding machine with wire feeding structure and convenient for replacing welding wire

Technical Field

The utility model relates to the field of welding machines, in particular to a handheld integrated welding machine with a wire feeding structure and convenient for replacing a welding wire.

Background

Carbon dioxide arc welding is one of welding methods, and is a method for welding by using carbon dioxide as an arc gas. Because of its low cost, carbon dioxide gas is easy to produce, and can be extensively used in various enterprises. Because the shielding gas is low in price, the weld joint is well formed during short-circuit transition, and a welding wire containing a deoxidizer is used to obtain a high-quality welding joint without internal defects, the welding method is one of the most important welding methods for ferrous metal materials at present.

However, the welding gun of the gas shielded welding is directly connected with an independent wire feeding device, and the wire feeding device is connected with a welding power supply so as to finally realize the welding function.

The welding machines disclosed in the market at present, such as: publication number is CN 107511560A's a hand-held type electric welding, including shell, handle, characterized by: a handle is arranged below the middle part of the shell, a positive output connector is embedded in the middle part of the left side of the shell, a power supply main board is embedded in the middle part of the shell, a fast recovery diode radiator, a rectifier bridge, a single-tube IGBT module, a fan and a main transformer are sequentially arranged above the power supply main board from left to right, the rectifier bridge, the single-tube IGBT module and the fan are arranged side by side and butted in pairs, a single-tube IGBT module radiator is arranged above the single-tube IGBT module, the left end of the single-tube IGBT module radiator is fixed above the rectifier bridge, the right end of the single-tube IGBT module radiator is fixed above the single-tube IGBT module, and a fast control board is arranged above the single-tube IGBT module radiator; the lower part of the power supply main board is connected with an electrolytic capacitor, the top end of the electrolytic capacitor is abutted to the lower surface of the middle part of the power supply main board, and the lower end of the electrolytic capacitor is located inside the handle.

For example: the miniature wire-disc-type wire-feeding gas protection welding gun with the notice number of CN206464738U comprises a gun body, wherein a gun barrel assembly is installed at the front end of the gun body, a handle is also obliquely installed at the lower end of the gun body, a welding cable and an air pipe enter the gun body from the handle, the air pipe is communicated with the gun barrel assembly inside the gun body, and the welding cable is fixedly connected with a gun barrel assembly cable; the gun comprises a gun body, and is characterized in that a miniature wire feeding mechanism is further mounted inside the gun body and comprises a motor, an output shaft of the motor is in power connection with a wire feeding wheel, the output direction of the wire feeding wheel corresponds to a wire feeding steel pipe of a gun barrel assembly, and an insulating pad is further arranged between the motor and a loop of a welding cable. However, the protective welding gun only integrates the wire feeder on the welding gun, the welding gun still needs to be provided with a large machine body for supplying power, the use is inconvenient, the welding wire of the wire feeder is conveyed from the welding gun, the welding wire replacement is inconvenient, and the maintenance is inconvenient.

Disclosure of Invention

The utility model aims to provide a handheld integrated welding machine with a wire feeding structure and convenient for replacing a welding wire.

The technical scheme of the utility model is as follows: from taking a structure and being convenient for change handheld integrative welding machine of welding wire, a serial communication port, including the welding machine main part, be equipped with electronic components in the welding machine main part, the head of welding machine main part is equipped with the welding nozzle subassembly, the outside of welding machine main part is fixed with the wire reel, send a subassembly and welding wire conveyer pipe, and the welding wire is convoluteed on the wire reel, send a subassembly to be driven by drive arrangement, send the welding wire that the wire subassembly will be on the wire reel to send into the welding wire conveyer pipe, in the head of the insertion welding machine main part that the welding wire conveyer pipe is buckled, the end of inserting of welding wire conveyer pipe is connected with the welding nozzle subassembly, the side of welding machine main part head has and is used for welding wire conveyer pipe male inserted inlet.

The further preferable scheme of the utility model is as follows: the welding wire coil, the wire feeding assembly and the welding wire conveying pipe are all arranged on the same side face of the welding machine main body, and the welding wire is conveyed into the welding nozzle assembly at the head of the welding machine main body from one side of the welding machine main body.

The further preferable scheme of the utility model is as follows: the welding wire feeding assembly comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel are arranged on the outer side of the welding machine main body, the welding wire is located between the driving wheel and the driven wheel, the driven wheel presses the welding wire on the driving wheel, and the driving wheel is driven to rotate by a driving device.

The further preferable scheme of the utility model is as follows: the driving device comprises a driving motor, a reduction gear set is arranged between the driving motor and the driving wheel, and the driving motor drives the driving wheel to rotate through the reduction gear set.

The further preferable scheme of the utility model is as follows: the welding machine is characterized in that a gear cavity is formed in the welding machine main body, the reduction gear set is arranged in the gear cavity, the driving motor is fixed in the welding machine main body, and the driving motor is connected with the reduction gear set in the gear cavity.

The further preferable scheme of the utility model is as follows: the outside of welding machine main part is equipped with the driven wheel seat, establishes in the driven wheel seat from driving wheel slidable, and the part exposes and presses the welding wire on the action wheel, and the one end of driven wheel seat is connected with the pin joint in the welding machine main part, and the other end is equipped with two contained sides, forms between the two contained sides and presss from both sides the mouth, be fixed with adjusting bolt in the welding machine main part, adjusting bolt's screw rod passes from the contained mouth between the two contained sides, and screw rod tip spiro union has the pressure subassembly, and the pressure subassembly is pressed on two contained sides, and rotatory pressure subassembly back is from the interval grow between driving wheel and the action wheel.

The further preferable scheme of the utility model is as follows: an arc-shaped baffle is fixed on the welding machine main body and covers the upper portion of the wire reel.

The further preferable scheme of the utility model is as follows: the welding machine main part is provided with a handle, and the handle is provided with a control switch.

The further preferable scheme of the utility model is as follows: be equipped with solenoid valve and controller in the welding machine main part, solenoid valve and controller electric connection, the entry linkage of solenoid valve has the intake pipe, intake pipe other end attach fitting, the exit linkage outlet duct of solenoid valve, the outlet duct other end intercommunication welding wire conveyer pipe.

The further preferable scheme of the utility model is as follows: the welding machine main part is provided with a support frame for supporting.

Compared with the prior art, the welding wire feeding device has the advantages that the welding wire conveying disc, the wire feeding assembly and the welding wire conveying pipe are fixed on the outer side of the welding machine main body, the welding wire conveying pipe is bent and inserted into the head of the welding machine main body to be connected with the welding nozzle assembly, the welding wire is conveyed from the outside of the welding machine main body to the welding nozzle assembly for welding, the welding wire is conveyed from the outside of the welding machine main body to be convenient for replacing the welding wire, the welding machine main body does not need to be disassembled during replacement, and later maintenance is facilitated;

the welding wire disc, the wire feeding assembly and the welding wire conveying pipe are fixed on the welding machine main body, and the handheld integrated welding machine is convenient to move, operate and carry.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the structure of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is an internal structural view of the present invention.

Fig. 5 is an internal structural view of the present invention.

Fig. 6 is a transverse cross-sectional view of the present invention.

Fig. 7 is a partial exploded view of the present invention.

Fig. 8 is a longitudinal sectional view of the present invention.

Fig. 9 is a partial cross-sectional view.

Fig. 10 is a partially enlarged view of a portion a of fig. 6.

In the figure: 1. a welder body; 2. a wire reel; 3. a grip; 4. a control switch; 5. a support frame; 6. an arc-shaped baffle plate; 7. a rotating member; 8. a middle guide tube; 9. a driven wheel seat; 10. a driven wheel; 11. a driving wheel; 12. a welding wire conveying pipe; 13. an insertion opening; 14. heat dissipation holes; 15. perforating; 16. welding a nozzle assembly; 17. adjusting a knob; 18. a limiting block; 19. a left half shell; 20. a right half shell; 21. a fan; 22. a controller; 23. a transformer; 24. a capacitor; 25. a wiring port; 26. a joint; 27. an air inlet pipe; 28. an electromagnetic valve; 29. an air outlet pipe; 30. an inductance; 31. a box body; 32. a drive motor; 33. a vent; 34. a limiting cover; 35. a clamping part; 36. a bump; 37. an arc-shaped clamping groove; 38. a slide rail; 39. a nut mounting groove; 40. a nut; 41. a push-down member; 42. a support spring; 43. clamping edges; 44. clamping the opening; 45. adjusting the bolt; 46. a clamping piece; 47. a card slot; 48. a communicating hole; 49. a mounting seat; 50. a hole; 51. an inner tube; 52. an outer tube; 53. protecting the mouth; 54. a contact tip; 55. an insulating nut; 56. a pinion gear; 57. a bull gear; 58. the last gearwheel; 59. an open slot.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the utility model.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

1-10, from taking a wire feeding structure and being convenient for change handheld integrative welding machine of welding wire, including welding machine main part 1, welding machine main part 1 includes the casing, the casing is formed by connecting left half shell 19 and right half shell 20, and is preferred, left half shell 19 and right half shell 20 can form foretell welding machine main part 1 together through screw fixed connection.

Be equipped with electronic components and controller 22 in the welding machine main part 1, controller 22 is the current circuit board in the market, and is preferred, controller 22 is PLC control module, controller 22 fixes in welding machine main part 1.

As shown in fig. 1, a wire reel 2, a wire feeding assembly and a wire conveying pipe 12 are fixed on the outer side of the welder body 1, the wire feeding assembly is located between the wire reel 2 and the wire conveying pipe 12, the wire feeding assembly conveys a welding wire wound on the wire reel 2 to the wire conveying pipe 12, and the wire feeding assembly is driven by a driving device.

Preferably, the wire reel 2, the wire feeding assembly and the wire conveying pipe 12 are all arranged on the same side face of the welding machine main body 1, and the wire reel 2, the wire feeding assembly and the wire conveying pipe 12 are all arranged on the side face of the right side of the welding machine main body 1, so that the whole structure of the welding machine is more compact.

As shown in fig. 1 and 2, the wire reel 2 is rotatably fixed on the right side wall of the welding machine main body 1, the wire reel 2 can rotate relative to the welding machine main body 1, a winding groove is formed in the wire reel 2, and the wire is wound in the winding groove to prepare for subsequent welding.

It is equipped with middle stand pipe 8 to send between wire assembly and the wire reel 2, middle stand pipe 8 is fixed on the lateral wall of welding machine main part 1, and the welding wire that convolutes on wire reel 2 inserts again after the direction of middle stand pipe 8 in the wire assembly that sends, and is preferred, 8 horizontal ornaments of middle stand pipe, the direction that middle stand pipe 8 led is parallel with the direction of delivery that the wire assembly carried the welding wire.

Fig. 7 and 8 show that the wire feeding assembly comprises a driving wheel 11 and a driven wheel 10 fixed on the right side of the welding machine main body 1, the driven wheel 10 is located above the driving wheel 11, the driving wheel 11 and the driven wheel 10 can rotate relative to the welding machine main body 1, the outlet of the middle guide pipe 8 faces to the position between the driven wheel 10 and the driving wheel 11, the welding wire guided by the middle guide pipe 8 is connected between the driving wheel 11 and the driven wheel 10, the driven wheel 10 presses the connected welding wire on the driving wheel 11, the driving wheel 11 is driven by a driving device to rotate, and the driving wheel 11 forwards conveys the welding wire through friction force.

As shown in fig. 3, 4, 5, 6, and 10, the driving device includes a driving motor 32, the driving motor 32 is electrically connected to the controller 22, the driving motor 32 is fixed in the welder body 1, a reduction gear set is disposed between the driving motor 32 and the driving wheel 11, and the driving motor 32 drives the driving wheel 11 to rotate through the reduction gear set.

Preferably, the reduction gear set comprises a plurality of small gears 56, having a smaller number of teeth, and a plurality of large gears 57, a pinion 56 is connected on a motor shaft of the driving motor 32, the driving wheel 11 is coaxially connected with a last gearwheel 58, two groups of gear sets are arranged between the last gearwheel 58 and the pinion 56 on the motor shaft, each group of gear sets comprises a gearwheel 57 and a pinion 56 which are coaxially connected, the gearwheel 57 of the front group is meshed with the pinion 56 connected on the motor shaft, the pinion 56 of the front group is meshed with the gearwheel 57 of the rear group, the pinion 56 of the rear group is meshed with the last gearwheel 58, the last gearwheel 58 is a gear coaxial with the driving wheel 11, the driving motor 32 drives a pinion 56 connected to a motor shaft to rotate, and the pinion 56 drives the driving wheel 11 to rotate after being decelerated by a middle speed reduction gear set.

As shown in fig. 5, 6 and 10, a gear cavity is formed in the welder body 1. Further, be equipped with one side in the welding machine main part 1 and have open-ended box 31, the inside space that is used for holding reduction gear set that has of box 31, box 31 is connected and is formed above-mentioned gear chamber on the inner wall of half shell 20 on the right side, each gear wheel 57 and pinion 56 in the reduction gear set all fix in the gear chamber and can rotate, and the gear shaft on the last gear wheel 58 passes the lateral wall of welding machine main part 1 and is connected with the action wheel 11 in the outside, and is preferred, box 31 passes through screw fixed connection on the inner wall of half shell 20 on the right side. Reduction gear set and driving motor 32 set up and make in welding machine main part 1 the welding machine structure is compacter, reduction gear set establishes that each electronic components in gear chamber and welding machine main part 1 separates, prevents that electronic components and reduction gear set from touching and causing the machine to damage.

As shown in fig. 7, the driving wheel 11 is fixed on the right side wall of the welding machine body 1 to rotate. The 1 lateral wall epirelief of welding machine main part 1 of action wheel 11 both sides is equipped with lug 36, is equipped with relative arc draw-in groove 37 on two lugs 36, and lug 36 is run through to arc draw-in groove 37 one end, and the outside of action wheel 11 is equipped with spacing lid 34, and the both sides of spacing lid 34 are equipped with the screens portion 35 that corresponds arc draw-in groove 37, spacing lid 34 covers on action wheel 11, rotates spacing lid 34 and makes screens portion 35 card go into arc draw-in groove 37 with action wheel 11 spacing on the right side wall of welding machine main part 1, action wheel 11 exposes from the breach of spacing lid 34 lateral wall, be equipped with the mounting hole that is used for settling the axle on the action wheel 11 in the spacing lid 34, action wheel 11 can rotate spacing lid 34 relatively.

Fig. 1, fig. 8, fig. 10 show, the outside of welding machine main part 1 is equipped with driven wheel seat 9, is equipped with the decurrent open slot 59 of opening on the driven wheel seat 9, be equipped with relative slide rail 38 on the both sides cell wall in the open slot 59, establish at open slot 59 internal rotation from driving wheel 10, connect in inserting the slide rail 38 of both sides from the pivot at driven wheel 10 center, follow driving wheel 10 and can follow slide rail 38 and slide from top to bottom, expose from the part of driving wheel 10 in open slot 59, expose part from driving wheel 10 and press the welding wire on action wheel 11, the one end of driven wheel seat 9 is connected with the pin joint on the welding machine main part 1, the rotation center of driven wheel seat 9 is parallel with the rotation center from driving wheel 10, and the rotation center of driving wheel 10 is parallel with the rotation center of action wheel 11 from the rotation center of driving wheel 10.

As shown in fig. 8, an adjusting bolt 45 is fixed to the welder body 1. The welding machine comprises a welding machine body 1, and is characterized in that two mounting seats 49 are arranged on the right side wall of the welding machine body 1, a distance is reserved between the two mounting seats 49, the middle guide tube 8 comprises an inner tube 51 and an outer tube 52 which are mutually sleeved, the outer tube 52 is sleeved on the outer side of the inner tube 51, holes 50 are formed in the two mounting seats 49, the outer tube 52 penetrates through the holes 50 of the two mounting seats 49 and is fixed on the outer wall of the welding machine body 1, preferably, the outer tube 52 is tightly matched with the holes 50, a limiting part is arranged on the outer tube 52, the cross-sectional size of the limiting part is larger than that of the holes 50, the limiting part is clamped on one side of the holes 50 to limit the outer tube 52 to move towards one side of a wire feeding assembly, the inner tube 51 is tightly matched with the outer tube 52, a clamping piece 46 is sleeved on the outer tube 52, the clamping piece 46 is positioned between the two mounting seats 49, a clamping groove 47 is arranged on the clamping piece 46, the top of the clamping groove 47 is connected with a communication hole 48, and the communication hole 48 penetrates through the top surface of the clamping piece 46, the head of the adjusting bolt 45 is clamped in the clamping groove 47, the screw rod of the adjusting bolt 45 passes through the communication hole 48 and is exposed out of the top surface of the clamping piece 46, the other end of the driven wheel seat 9 is provided with two clamping edges 43, a clamping opening 44 is formed between the two clamping edges 43, the screw rod of the adjusting bolt 45 passes through the clamping opening 44 between the two clamping edges 43, the end part of the screw rod is in threaded connection with a pressing component, the pressing component is pressed on the two clamping edges 43, and the distance between the driven wheel 10 and the driving wheel 11 is increased after the pressing component is rotated.

The pressing assembly comprises a pressing piece 41 and a rotating piece 7, the pressing piece 41 is pressed above two clamping edges 43, a spring installation groove with an upward opening is formed in the pressing piece 41, a through hole is formed in the bottom of the spring installation groove, a screw rod of an adjusting bolt 45 penetrates through the through hole and is exposed out of an upper notch of the spring installation groove, a nut installation groove 39 with an upward opening is formed in the top surface of the rotating piece 7, a nut 40 is arranged in the nut installation groove 39, the nut 40 and the rotating piece 7 rotate relatively to limit, the screw rod exposed out of the upper notch of the spring installation groove is inserted into the nut installation groove 39 from bottom to top and is connected with the nut 40, a supporting spring 42 is arranged in the spring installation groove, the supporting spring 42 is sleeved on the screw rod of the adjusting bolt 45, the supporting spring 42 is supported between the rotating piece 7 and the pressing piece 41, and the rotating piece 7 drives the nut 40 to rotate after being rotated, the nut 40 is screwed down or up along the screw of the adjusting bolt 45. When the nut 40 is screwed upwards, the driven wheel seat 9 can rotate upwards, and after the driven wheel seat 9 rotates upwards, the driven wheel 10 can move upwards along the slide rail 38, so that the distance between the driven wheel 10 and the driving wheel 11 is increased; the nut 40 is rotated downwards, the nut 40 pushes the driven wheel seat 9 to rotate downwards, after the driven wheel seat 9 rotates downwards, the driven wheel seat 9 drives the driven wheel 10 to move downwards, and the distance between the driven wheel 10 and the driving wheel 11 is reduced. Welding wires with different thicknesses can be connected between the driving wheel 11 and the driven wheel 10, and the adaptability is stronger.

The size of the communication hole 48 is smaller than that of the head of the adjustment bolt 45.

The diameter of the screw of the adjusting bolt 45 is smaller than the width of the clamping opening 44 between the two clamping edges 43.

As shown in fig. 1 and 4, the wire feeding pipe 12 is fixed on the right side wall of the welding machine body 1, and the wire feeding pipe 12 is inserted into the head of the welding machine body 1 in a bent manner. The side of the head of the right half-shell 20 is provided with an insertion opening 13, one end of the welding wire conveying pipe 12 faces the wire feeding assembly, and the other end of the welding wire conveying pipe 12 passes through the insertion opening 13 and is inserted into the head of the welder body 1.

The front end of the head of the welding machine body 1 is provided with a through hole 15, the front side of the head of the welding machine body 1 is provided with a welding nozzle component 16, and the insertion end of the welding wire conveying pipe 12 penetrates out of the through hole 15 at the front end of the head of the welding machine body 1 and is connected with the welding nozzle component 16 at the front side.

Further, as shown in fig. 9, welding nozzle subassembly 16 is the current part in the market, welding nozzle subassembly 16 includes insulated nut 55, contact tip 54 and protection mouth 53, the end of inserting of welding wire conveyer pipe 12 is equipped with the external screw thread, insulated nut 55 cover on the end of inserting of welding wire conveyer pipe 12 with the external screw thread spiro union on the welding wire conveyer pipe 12, be equipped with the internal thread in the end of inserting of welding wire conveyer pipe 12, contact tip 54 inserts in the end of inserting of welding wire conveyer pipe 12 with the internal screw thread spiro union, insulated nut 55's one end is equipped with threaded connection portion, protection mouth 53 covers on the contact tip 54 outside and spiro union on threaded connection portion, and the welding wire that carries into in welding wire conveyer pipe 12 is used for the welding in being carried contact tip 54 from the end of inserting of welding wire conveyer pipe 12.

Further, be fixed with cowl 6 on the welding machine main part 1, cowl 6's radian is the same with the outer lane radian of wire reel 2, cowl 6 covers the top at wire reel 2, cowl 6 pastes the outer lane of wire reel 2. The arc-shaped baffle 6 functions like a mudguard of a bicycle.

Be equipped with handle 3 on the welding machine main part 1, handle 3 and casing integrated into one piece, be equipped with control switch 4 on the handle 3, control switch 4 and controller 22 electric connection, the contained angle of handle 3 and welding machine main part 1 is the obtuse angle, and is preferred, the contained angle of handle 3 and welding machine main part 1 is 120.

The welding machine main body 1 is internally provided with an electromagnetic valve 28, and the electromagnetic valve 28 is fixed in the welding machine main body 1. The electromagnetic valve 28 is electrically connected with the controller 22, an inlet of the electromagnetic valve 28 is connected with an air inlet pipe 27, the air inlet pipe 27 extends into the handle 3, a connector 26 is connected to the end portion extending into the handle 3, the connector 26 is fixed to the bottom of the handle 3, the connector 26 is exposed outside the bottom of the handle 3 and is used for being externally connected with an air supply device, an outlet of the electromagnetic valve 28 is connected with an air outlet pipe 29, the other end of the air outlet pipe 29 is communicated with the welding wire conveying pipe 12, the air supply device conveys carbon dioxide gas into the air inlet pipe 27, the carbon dioxide gas passes through the electromagnetic valve 28 and is conveyed into the welding wire conveying pipe 12 through the air outlet pipe 29, and the carbon dioxide gas is finally guided into the conductive nozzle 54 to be used for welding.

The front end of welding machine main part 1 is equipped with support frame 5, support frame 5 rotates to be connected on welding machine main part 1, be equipped with stopper 18 in the welding machine main part 1, support frame 5 can support on stopper 18 after rotating, stopper 18 limits the biggest turned angle of support frame 5, set up around support frame 5 and the handle 3, when support frame 5 supports on stopper 18, support frame 5 is the splayed with handle 3, and when not using, support frame 5 can cooperate handle 3 to stand the welding machine on the plane, conveniently takes, also can hang through support frame 5 the welding machine.

As shown in fig. 4, the electronic components in the welding machine main body 1 include a fan 21, a transformer 23 and an inductor 30, a capacitor 24 is arranged in the handle 3, a wiring port 25 is arranged at the bottom of the handle 3, the wiring port 25 is used for supplying power to an external power supply, and the wiring port 25 and the capacitor 24 are electrically connected to the controller 22. It is also possible to provide a power source, for example a rechargeable battery, directly in the grip 3.

The fan 21 is located at the tail of the welding machine main body 1, a plurality of ventilation openings 33 corresponding to the fan 21 are formed in the tail of the welding machine main body 1, the fan 21 is arranged close to the controller 22, the fan 21 is electrically connected with the controller 22, and the fan 21 is used for dissipating heat.

The transformer 23 is electrically connected with the controller 22, one end of the inductor 30 is connected to the transformer 23 through a lead, the other end of the inductor 30 is connected to the contact tip 54 through a lead, the current transmitted by the controller 22 passes through the transformer 23 and then the inductor 30, and finally the current is guided to the contact tip 54 for welding, and the inductor 30 is used for filtering a part of electric waves, so that the transmitted current is more stable and smoother during welding.

When the welding machine is used, the welding wire is conveyed into the contact tip 54 by the wire feeding assembly, the connector 26 is externally connected with the gas feeding device, the gas feeding device feeds protective gas into the gas inlet pipe 27, the electromagnetic valve 28 is opened, the protective gas flows into the contact tip 54 through the electromagnetic valve 28, the controller 22 controls the transformer 23 to be electrified, current in the transformer 23 is introduced into the inductor 30 and then is guided into the contact tip 54 through the inductor 30, and the contact tip 54 is in contact with the welding wire, so that the current on the welding wire generates electric arc for welding.

Further, be equipped with adjust knob 17 on the welding machine main part 1, adjust knob 17 and controller 22 electric connection, adjust knob 17 is used for adjusting the electric current size that lets in contact tip 54, when the work piece that needs to weld thin, adjusts the electric current little, when the work piece that needs to weld thick increases the electric current, makes the welding wire can weld the work piece thoroughly for the welding of the different work pieces of adaptation.

Further, the head of the welder body 1 is provided with a plurality of heat dissipation holes 14 for dissipating heat.

The feeding direction of the welding wire by the driving wheel 11 is parallel to the extending direction of the contact tip 54.

The handheld integrated welding machine with the wire feeding structure and convenient for replacing the welding wire provided by the utility model is described in detail, the principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the utility model and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. From taking a structure and being convenient for change handheld integrative welding machine of welding wire, a serial communication port, including the welding machine main part, be equipped with electronic components in the welding machine main part, the head of welding machine main part is equipped with the welding nozzle subassembly, the outside of welding machine main part is fixed with the wire reel, send a subassembly and welding wire conveyer pipe, and the welding wire is convoluteed on the wire reel, send a subassembly to be driven by drive arrangement, send the welding wire that the wire subassembly will be on the wire reel to send into the welding wire conveyer pipe, in the head of the insertion welding machine main part that the welding wire conveyer pipe is buckled, the end of inserting of welding wire conveyer pipe is connected with the welding nozzle subassembly, the side of welding machine main part head has and is used for welding wire conveyer pipe male inserted inlet.

2. The hand-held integrated welding machine with wire feeding structure and convenient for replacing welding wire as claimed in claim 1, wherein the wire reel, the wire feeding assembly and the wire feeding pipe are all arranged on the same side of the welding machine body, and the welding wire is fed from one side of the welding machine body to the welding nozzle assembly of the head of the welding machine body.

3. The hand-held integrated welding machine with the wire feeding structure and convenient for replacing the welding wire as claimed in claim 1 or 2, wherein the wire feeding assembly comprises a driving wheel and a driven wheel which are arranged outside the main body of the welding machine, the welding wire is positioned between the driving wheel and the driven wheel, the driven wheel presses the welding wire on the driving wheel, and the driving wheel is driven to rotate by the driving device.

4. The handheld all-in-one welding machine with the wire feeding structure and convenient for replacing the welding wire as claimed in claim 3, wherein the driving device comprises a driving motor, a reduction gear set is arranged between the driving motor and the driving wheel, and the driving motor drives the driving wheel to rotate through the reduction gear set.

5. The hand-held welding machine with the wire feeding structure and convenient for replacing the welding wire as claimed in claim 4, wherein a gear cavity is arranged in the welding machine main body, the reduction gear set is arranged in the gear cavity, the driving motor is fixed in the welding machine main body, and the driving motor is connected with the reduction gear set in the gear cavity.

6. The handheld integrated welding machine with the wire feeding structure and the welding wire convenient to replace according to claim 3, wherein a driven wheel seat is arranged on the outer side of the welding machine main body, the driven wheel is slidably arranged in the driven wheel seat, part of the driven wheel is exposed to press the welding wire on the driving wheel, one end of the driven wheel seat is connected with a hinge point on the welding machine main body, the other end of the driven wheel seat is provided with two clamping edges, a clamping opening is formed between the two clamping edges, an adjusting bolt is fixed on the welding machine main body, a screw rod of the adjusting bolt penetrates through the clamping opening between the two clamping edges, a pressing component is screwed at the end of the screw rod and presses the two clamping edges, and after the pressing component is rotated, the distance between the driven wheel and the driving wheel is increased.

7. The hand-held welding machine with wire feeding structure and convenient wire replacement as claimed in claim 1, wherein a curved baffle is fixed on the welding machine main body and covers above the wire reel.

8. The hand-held integrated welding machine with the wire feeding structure and convenient for replacing the welding wire as claimed in claim 1, wherein a handle is arranged on the welding machine main body, and a control switch is arranged on the handle.

9. The handheld integrated welding machine with the wire feeding structure and convenient for replacing the welding wire according to claim 1, wherein an electromagnetic valve and a controller are arranged in the welding machine main body, the electromagnetic valve is electrically connected with the controller, an inlet of the electromagnetic valve is connected with an air inlet pipe, the other end of the air inlet pipe is connected with a connector, an outlet of the electromagnetic valve is connected with an air outlet pipe, and the other end of the air outlet pipe is communicated with a welding wire conveying pipe.

10. The hand-held integrated welding machine with the wire feeding structure and convenient for replacing the welding wire as claimed in claim 1, wherein a support frame for supporting is arranged on the welding machine main body.