Handheld welding machine

Abstract

The utility model relates to the technical field of electric welding machines, and discloses a handheld welding machine which comprises a welding machine shell. The control circuit board is arranged in the welding machine shell; the heat dissipation block is provided with a channel in the direction from the air inlet to the air outlet. The cooling fan is arranged in the welding machine shell; the locking device comprises a welding rod clamp, square bakelite, a cover head and a locking piece. The first end of the welding rod clamp is arranged in the welding shell and electrically connected with the second circuit board, the second end of the welding rod clamp extends out of the welding shell, the welding rod clamp is provided with a mounting hole used for mounting a welding rod, and the welding rod clamp is provided with a first locking hole; the square bakelite is arranged on the second end part of the welding rod clamp in a sleeving manner and is provided with a second locking hole; the cover head covers the square bakelite; the locking piece fixes the welding rod through the second locking hole and the first locking hole. The welding rod is fixed and the heat dissipation function is added by adopting a simple and convenient structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric welding machine technical field, especially hand -held welding machine. BACKGROUND

[0002] Hand -held welding machine is used after clamping electrode. In order to realize the fixation to electrode, the fixing mode that the existing hand -held welding machine adopts is as follows: the elastic clamping structure is set at the gun head position of hand -held welding machine, and the elastic clamping structure is loosened by using the lever, and after clamping electrode, the fixation is realized under the elastic clamping force of elastic clamping structure.

[0003] The structure adopted in the above has the problems of high assembly cost and high component cost.

[0004] Therefore, improvement is needed. INVENTION CONTENTS

[0005] The utility model solves the technical problem in the prior art, and provides a hand -held welding machine to solve the problems in the background art.

[0006] To solve the above technical problem, the technical scheme adopted by the utility model is as follows: a hand -held welding machine, comprising: a welding machine shell, the welding machine shell includes a handle part and a gun head part connected with the handle part, a front end side wall of the gun head part is provided with a grille hole position air outlet, and a rear end grille hole position air inlet of the gun head part;Control circuit board, the control circuit board includes a first circuit board arranged in the welding machine shell and a second circuit board arranged below the first circuit board;Heat dissipation block, the heat dissipation block is arranged between the first circuit board and the second circuit board, and the heat dissipation block is provided with a channel in the direction from the air inlet to the air outlet;Heat dissipation fan, the heat dissipation fan is arranged in the welding machine shell and is placed at the air inlet position;Locking device, the locking device is arranged at the front end position of the gun head part, and the locking device includes an electrode clamp, a square rubber wood, a cover head and a locking piece;Wherein, the first end part of the electrode clamp is arranged in the welding machine shell and is electrically connected with the second circuit board, the second end part of the electrode clamp extends to the outside of the welding machine shell, the axis direction of the electrode clamp is provided with a mounting hole for mounting the electrode, and the first locking hole is arranged on the side wall outside the welding machine shell;The square rubber wood is sleeved on the second end part of the electrode clamp, and the square rubber wood is provided with a second locking hole matched with the first locking hole;The cover head is arranged on the square rubber wood;The locking piece is fixed through the second locking hole and the first locking hole.

[0007] Further, the locking piece includes a five -angle knob and a threaded rod connected with the five -angle knob, and the threaded rod is screwed through the second locking hole and the first locking hole.

[0008] Further, an electric quantity display screen is arranged at the rear end of the gun head.

[0009] Further, an adjusting knob for adjusting the operating parameters is arranged on the first circuit board and extends to the upper part of the welding machine housing.

[0010] Compared with the prior art, the welding machine has the advantages that:

[0011] Cost optimization: the knob-thread rod mechanical locking structure is used to replace the elastic clamping mechanism, the number of precise components such as springs and levers is reduced, the component cost and assembly cost of the product are reduced, the operation mode is simplified, and the welding rod can be fixed through the knob locking mode.

[0012] Improved heat dissipation performance: the airflow generated by the heat dissipation fan is blown through the heat dissipation block, so that the heat of the heat dissipation block is taken away, thereby reducing the problem inside the welding machine housing.

[0013] Stepless adjustment: the adjusting knob is arranged for stepless adjustment of the operating parameters. DETAILED DESCRIPTION

[0014] Figure 1 is a structural schematic diagram of the utility model.

[0015] Figure 2 is another angle structural schematic diagram of the utility model.

[0016] Figure 3 is another angle structural schematic diagram of the utility model.

[0017] Figure 4 is an internal structural schematic diagram of the utility model.

[0018] Figure 5 is a structural schematic diagram of the heat dissipation block.

[0019] Figure 6 is an exploded structural schematic diagram of the locking device.

[0020] Figure 7 is a sectional view of the locking device.

[0021] Fig. 1 is a welding machine housing; 2 is a handle part; 3 is a gun head; 4 is an air outlet; 5 is an air inlet; 6 is a control circuit board; 7 is a first circuit board; 8 is a second circuit board; 9 is a heat dissipation block; 10 is a channel; 11 is a heat dissipation fan; 12 is a locking device; 13 is a welding rod clamp; 14 is a square ebonite; 15 is a cover head; 16 is a locking piece; 17 is a five-angle knob; 18 is a threaded rod; 19 is an electric quantity display screen; 20 is an adjusting knob; 21 is a mounting hole; 22 is a first locking hole; 23 is a second locking hole. DETAILED DESCRIPTION

[0022] The utility model will be explained further in detail below in combination with the drawings.

[0023] The embodiments described with reference to the drawings are exemplary and are intended to explain the present application and cannot be understood as a limitation of the present application. In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present application and simplifying the description and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more than two, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature of the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature of the second feature include the vertical direction of the first feature above and oblique above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature of the second feature include the vertical direction of the first feature above and oblique above the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0024] In view of the technical problems described in the background art, such as Figures 1-7As shown, a handheld welding machine is provided, comprising: a welding machine housing 1, the welding machine housing 1 comprising a handle part 2 and a gun head part 3 connected with the handle part 2, the front end side wall of the gun head part 3 is provided with a grating hole position air outlet 4, the rear end grating hole position air inlet 5 of the gun head part 3; a control circuit board 6, the control circuit board 6 comprising a first circuit board 7 arranged inside the welding machine housing 1 and a second circuit board 8 arranged below the first circuit board 7; a heat dissipation block 9, the heat dissipation block 9 is arranged between the first circuit board 7 and the second circuit board 8, the heat dissipation block 9 is provided with a channel 10 along the direction from the air inlet 5 to the air outlet 4; a heat dissipation fan 11, the heat dissipation fan 11 is arranged in the welding machine housing 1 and is placed at the position of the air inlet 5; a locking device 12, the locking device 12 is arranged at the front end position of the gun head part 3, the locking device 12 comprises an electrode holder 13, a square ebonite 14, a cover head 15 and a locking piece 16; wherein the first end part of the electrode holder 13 is arranged in the welding machine housing and is electrically connected with the second circuit board 8, the second end part of the electrode holder 13 extends out of the welding machine housing, the axis direction of the electrode holder 13 is provided with a mounting hole 21 for mounting the electrode, the side wall of the electrode holder 13 outside the welding machine housing is provided with a first locking hole 22; the square ebonite 14 is sleeved on the second end part of the electrode holder 13, the square ebonite 14 is provided with a second locking hole 23 matched with the first locking hole 22; the cover head 15 covers the square ebonite 14; the locking piece 16 fixes the electrode through the second locking hole 23 and the first locking hole 22.

[0025] The embodiment provides a handheld welding machine, comprising a welding machine housing 1, a control circuit board 6, a heat dissipation block 9, a heat dissipation fan 11 and a locking device 12.

[0026] On the welding machine housing 1, the front end side wall of the gun head part 3 is provided with a grating hole position air outlet 4, and the rear end is provided with a grating hole position air inlet 5, the heat dissipation fan 11 is installed at the position close to the air inlet 5 to form an air duct heat dissipation path. The heat dissipation block 9 is made of aluminum material and has good heat conduction performance, at the same time, the heat dissipation block 9 can contact the first circuit board 7 and the second circuit board 8 to guide the generated heat to the heat dissipation block 9, in order to facilitate heat dissipation, the heat dissipation block 9 is provided with a channel 10 for increasing the heat dissipation area.

[0027] In use, the heat dissipation fan 11 is driven, the external airflow is blown to the heat dissipation block 9 through the heat dissipation fan 11, the airflow is blown to the air outlet 4 through the channel 10 of the heat dissipation block 9, through the airflow circulation direction, the internal heat dissipation of the welding machine housing 1 is realized, thereby prolonging the service life of the product.

[0028] Meanwhile, the locking device 12 with a novel structure is adopted, which mainly comprises a welding rod clamp 13, a square bakelite 14, a cover head 15 and a locking piece 16. In specific use, an installation hole is arranged on the axis direction of the welding rod clamp 13, the depth of the installation hole can be designed according to the actual installation requirement of the welding rod, and no limitation is made, the welding rod clamp 13 is prepared by using a conductive metal material, a first locking hole 22 is arranged on the side wall of the welding rod clamp 13, the square bakelite 14 is sleeved on one end of the welding rod clamp 13 outside the welding machine shell 1, the high resistance and arc resistance performance of the square bakelite 14 are used as a structural part, a second locking hole 23 is arranged on the square bakelite 14 corresponding to the position of the first locking hole 22, and the cover head 15 is covered on the square bakelite 14 to form protection for the square bakelite 14.

[0029] In specific use, the worker inserts the welding rod into the installation hole, and rotates and screws the locking piece 16 through the second locking hole of the square bakelite 14 and the first locking hole 22 of the welding rod clamp 13, so that the welding rod is locked and fixed.

[0030] In the above technical scheme, the knob-threaded rod 18 mechanical locking structure is adopted to replace the elastic clamping mechanism, the number of precise components such as springs and push rods is reduced, the component cost and assembly cost of the product are reduced, the operation mode is simplified, the welding rod can be fixed by the knob locking mode, the airflow generated by the driving of the cooling fan 11 blows through the cooling block 9, the heat of the cooling block 9 is taken away, and thus the problem inside the welding machine shell 1 is reduced.

[0031] Optionally, the locking piece 16 comprises a five-corner knob 17 and a threaded rod 18 connected with the five-corner knob 17, the threaded rod 18 is screwed through the second locking hole 23 and the first locking hole 22.

[0032] Preferably, an electric quantity display screen 19 is arranged on the rear end of the gun head 3. The electric quantity display screen 19 is electrically connected with the control circuit board 6, and the worker can check the electric quantity by checking the electric quantity display screen 19.

[0033] Reference Figures 2-3 As shown, an adjusting knob 20 for adjusting the operating parameter is arranged on the first circuit board 7 and extends to the upper part of the welding machine shell 1. The adjusting knob 20 can be used for adjusting the size of the output current, and is convenient for the worker to adjust and use in welding.

[0034] The above is not any limitation on the technical range of the utility model, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.

Claims

1. A hand-held welder characterized by, The utility model relates to a hand-held welding machine, including: Welding machine shell, the welding machine shell includes handle part and the gun head part connected with handle part, the front end side wall of gun head part is equipped with the air outlet of grid hole position, the air inlet of rear end grid hole position of gun head part; Control circuit board, the control circuit board includes first circuit board in the welding machine shell inside and second circuit board in the first circuit board below; Heat dissipation block, the heat dissipation block is arranged between the first circuit board and the second circuit board, and the heat dissipation block is provided with a passage along the direction from the air inlet to the air outlet; Heat dissipation fan, the heat dissipation fan is arranged in the welding machine shell and is placed in the air inlet position; Locking device, the locking device is arranged at the front end position of the gun head part, and the locking device includes an electrode holder, a square ebonite, a cover head and a locking piece;Wherein, the first end of the electrode holder is placed in the welding machine shell and is electrically connected with the second circuit board, the second end of the electrode holder extends to the outside of the welding machine shell, the axis direction of the electrode holder is provided with a mounting hole for mounting the electrode, and the first locking hole is arranged on the side wall of the electrode holder outside the welding machine shell;The square ebonite is sleeved on the second end of the electrode holder, and the square ebonite is provided with a second locking hole matched with the first locking hole;The cover head is arranged on the square ebonite;The locking piece fixes the electrode through the second locking hole and the first locking hole.

2. The hand-held welding machine according to claim 1, wherein: The locking piece includes a five-corner knob and a threaded rod connected with the five-corner knob, and the threaded rod is screwed through the second locking hole and the first locking hole.

3. The hand-held welding machine according to claim 1, wherein: It includes an electric quantity display screen, and the electric quantity display screen is arranged at the rear end of the gun head part.

4. The hand-held welding machine according to claim 1, wherein: An adjusting knob for adjusting operating parameters is arranged on the first circuit board and extends to the upper part of the welding machine shell.

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