CN113560715B

CN113560715B - Handheld laser welding equipment

Info

Publication number: CN113560715B
Application number: CN202110954910.3A
Authority: CN
Inventors: 熊清平; 强克明; 梁星
Original assignee: Jiangyin Jinxiang Machinery Co ltd
Current assignee: Jiangyin Jinxiang Machinery Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-22
Anticipated expiration: 2041-08-19
Also published as: CN113560715A

Abstract

The invention relates to a handheld laser welding device, which comprises a welding gun, wherein a welding head is fixed at the rear end of the welding gun, a handle is fixedly sleeved on the welding gun, a control switch is fixedly penetrated through the bottom of the handle, a fixed block and a guide plate are fixed on one side of the welding gun through bolts, a connecting frame is hinged to the other side of the fixed block, a directional plate is fixed on the other side of the connecting frame through bolts, the section of the directional plate is arranged in a J shape, a guide groove is formed in the front end of the guide plate, the section of the guide groove is arranged in an arc shape, a guide block is connected in the guide groove in a sliding manner, a guide spring is fixed between the guide block and the inner wall of the guide groove through bolts, and the same connecting rod is fixed between the guide block and the connecting frame through bolts; according to the invention, the bottom of the orientation plate is contacted with the working table top or the table top, so that the hand can be stably supported through the contact stress of the welding head and the welding seam part and the contact stress between the orientation plate and the working table top, and the hand is effectively prevented from shaking to cause angle deviation.

Description

Handheld laser welding equipment

Technical Field

The invention relates to the technical field of welding equipment, in particular to handheld laser welding equipment.

Background

Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner. Welding accomplishes the purpose of joining by three ways: 1. fusion welding, namely heating the workpieces to be jointed to locally melt the workpieces to form a molten pool, cooling and solidifying the molten pool to joint the workpieces, and adding a melt filler to assist when necessary, so that the method is suitable for welding various metals and alloys without pressure. 2. Pressure welding, in which pressure must be applied to a welding piece in a welding process, belongs to the processing of various metal materials and partial metal materials. 3. Brazing, namely, a metal material with a melting point lower than that of the base metal is used as brazing filler metal, the liquid brazing filler metal is used for wetting the base metal, a joint gap is filled, and the liquid brazing filler metal and the base metal are mutually diffused to realize a link weldment. It is suitable for welding various materials, and also suitable for welding different metals or different materials.

Along with the development of technique, laser welding equipment becomes more exquisite and convenient, hand-held type laser welding equipment convenient to use on the market, but hand-held type welding equipment on the market is when welding, need aim at the welding seam of welding part with the bonding tool, the hand is maintained at the angle of an slope, drag welder along the rectilinear direction removal and weld, in this process, the hand can take place the shake, the angle of hand is difficult to pinpoint, it is motionless, consequently, cause the influence to welding quality, so make corresponding improvement to this problem.

In order to solve the problems, the invention provides a handheld laser welding device.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to solve the problem that handheld welding equipment in the prior art is easy to shake when used, meets the practical requirements, and provides handheld laser welding equipment to solve the technical problem.

(2) Technical scheme

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

the utility model provides a hand-held type laser welding equipment, including welder, the welder rear end has the bonding tool through the bolt fastening, the cover is established and is fixed with the handle on the welder, the handle bottom is run through and is fixed with control switch, welder one side has fixed block and deflector through the bolt fastening, the fixed block opposite side articulates there is the link, the link opposite side has the directional board through the bolt fastening, the directional board cross-section sets to J shape, the guide way has been seted up to the deflector front end, the guide way cross-section sets to the arc, sliding connection has the guide block in the guide way, there is same guide spring through the bolt fastening between guide block and the guide way inner wall, there is same connecting rod through the bolt fastening between guide block and the link, be provided with positioning mechanism on the deflector, be provided with the mechanism of gripping on the directional board.

Preferably, the positioning mechanism comprises a positioning block, a plurality of first grooves distributed in an annular array are formed in the inner wall of the circumference of the guide groove, a first spring is fixed on the inner wall of the top of each first groove through a bolt, the positioning block is fixed at the bottom of each first spring through a bolt, the cross section of the positioning block is arc-shaped, and a matched clamping groove is formed in the contact position of the guide block and the positioning block.

Preferably, first limiting grooves are formed in the inner walls of the two ends of the first groove, first limiting blocks are connected in the first limiting grooves in a sliding mode, and the first limiting blocks and the positioning blocks are fixed through bolts.

Preferably, the positioning block is provided with a mounting groove on the outer circular wall, a plurality of inner shafts distributed in an annular array are rotatably connected between the inner walls at two ends of the mounting groove through bearings, and sleeve shafts are fixedly sleeved on the inner shafts.

Preferably, the circumferential outer wall of the sleeve shaft is provided with a plurality of resistance-increasing grooves distributed in an annular array, and the cross sections of the resistance-increasing grooves are trapezoidal.

Preferably, the holding mechanism comprises a handle, the handle is arranged between the guide plate and the handle, the cross section of the handle is in a U shape, a second groove is formed in one side, close to the guide plate, of the handle, a second spring is fixed to the side wall of the second groove through a bolt, an inner rod is fixed to the other side of the second spring through a bolt, and the two inner rods and the orientation plate are fixed through bolts.

Preferably, the inner walls of two sides of the second groove are provided with second limiting grooves, the second limiting grooves are connected with second limiting blocks in a sliding mode, and the second limiting blocks and the inner rod are fixed through bolts.

Preferably, the arc outer wall of the directional plate is provided with a plurality of groups of third grooves distributed in an annular array, the inner wall of the top of each third groove is fixedly provided with a third spring through a bolt, the bottom of each third spring is fixedly provided with an installation block through a bolt, the bottom of each installation block is provided with a movable groove, and the inner walls on two sides of each movable groove are rotatably connected with a same roller through a bearing.

Preferably, third spacing grooves have all been seted up to third recess both sides inner wall, and sliding connection has a third stopper in the third spacing groove, two third stoppers all with the installation piece between fixed connection.

(3) Has the advantages that:

A. the welding head is aligned to a welding seam part by holding the handle and the handle, a proper inclination angle is aligned by the hand, the force is applied to the orientation plate by the handle, the orientation plate rotates around the fixed block along with the connecting frame, the bottom of the orientation plate is contacted with the working table top or the table top, the hand can be stably supported by the contact stress of the welding head and the welding seam part and the contact stress between the orientation plate and the working table top, the hand is effectively prevented from shaking to cause angle deviation and further influence on welding quality, meanwhile, when the connecting frame rotates, the connecting rod is synchronously driven to move, the connecting rod moves along the arc-shaped guide groove along with the guide block, after the connecting rod moves to a set angle, the arc-shaped positioning block and the corresponding clamping groove form butt joint, at the moment, the first spring connected with the positioning block is in a compressed state, and therefore, the elastic force of the first spring extrudes the positioning block, thereby form the card to the position of guide block to make the angle of directional board more stable, after the angle design, can press control switch simultaneously, drag welder along the route removal, thereby accomplish accurate welding process, and directional board cross-section sets to the J-shaped, can make directional board can form the outrigger between arbitrary angle and the table surface in normal use, make directional removal effect better.

B. Be provided with interior axle and sleeve axle, form the butt joint when locating piece and the draw-in groove that corresponds, block the guide block regularly, this moment, the surface and the guide block direct contact of sleeve axle, and with the guide block between produce be the stiction, thereby make the card effect to the guide block improve, when the orientation board rotates the angle of seeking, produce rolling friction between sleeve axle and the guide block, thereby reduce the frictional resistance when moving the guide block, thereby make the rotation process of orientation board more nimble laborsaving, and be provided with the resistance increasing groove, resistance increasing groove cross-section sets to trapezoidal, can further promote foretell card effect.

C. Be provided with the mechanism of gripping, can pull handle and laminate when holding the handle to effectively prevent when removing, lead to the orientation board to take place to rotate, and when carrying out the angle rotation regulation to the orientation board, loosen the palm a little, can be under the effect of second spring, pull handle to keeping away from handle one side and remove, can be convenient for carry out the angle modulation to the orientation board.

D. When carrying out the welding and removing, gyro wheel and table surface contact and roll, can further reduce and table surface between the frictional resistance, thereby make the process of removal more laborsaving stable, thereby improve the welding effect, simultaneously, when table surface unevenness, under the effect of third spring, the gyro wheel can follow the installation piece and contract in the third recess together and remove, thereby make all gyro wheels can attach to table surface's topography, make directional board keep balance, thereby further improve the welding effect.

Drawings

FIG. 1 is a schematic view of a first angular configuration of a hand-held laser welding apparatus according to the present invention;

FIG. 2 is an enlarged schematic view of a hand-held laser welding apparatus according to the present invention at A;

FIG. 3 is a second angular configuration of a hand-held laser welding apparatus according to the present invention;

FIG. 4 is a schematic diagram of a guide plate structure of a handheld laser welding apparatus according to the present invention;

FIG. 5 is an enlarged schematic view of the handheld laser welding apparatus at B of the present invention;

FIG. 6 is a schematic diagram of a positioning block of a hand-held laser welding apparatus according to the present invention;

FIG. 7 is a schematic view of a handle structure of a handheld laser welding apparatus according to the present invention;

FIG. 8 is an enlarged view of the laser welding apparatus at the position C;

FIG. 9 is a schematic diagram of a directional plate structure of a handheld laser welding apparatus according to the present invention;

fig. 10 is an enlarged schematic view of the handheld laser welding device at position D according to the present invention.

The reference numbers are as follows:

1. a welding gun; 2. a handle; 3. a welding head; 4. a fixed block; 5. a connecting frame; 6. an orientation plate; 7. a grip; 8. an inner rod; 9. a guide plate; 10. a guide groove; 11. a guide block; 12. a guide spring; 13. a connecting rod; 14. a control switch; 15. a first groove; 16. a first spring; 17. positioning blocks; 18. a first limit groove; 19. a first stopper; 20. mounting grooves; 21. an inner shaft; 22. a sleeve shaft; 23. a resistance increasing groove; 24. a second groove; 25. a second spring; 26. a second limit groove; 27. a second limiting block; 28. a third groove; 29. a third spring; 30. mounting blocks; 31. a movable groove; 32. a roller; 33. a third limiting groove; 34. and a third limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The invention will be further illustrated with reference to the following figures 1-10 and examples:

in the embodiment, as shown in fig. 1-5, a handheld laser welding device comprises a welding gun 1, a welding head 3 is fixed at the rear end of the welding gun 1 through a bolt, a handle 2 is sleeved and fixed on the welding gun 1, a control switch 14 is fixedly penetrated through the bottom of the handle 2, a fixed block 4 and a guide plate 9 are fixed on one side of the welding gun 1 through a bolt, a connecting frame 5 is hinged on the other side of the fixed block 4, a directional plate 6 is fixed on the other side of the connecting frame 5 through a bolt, the section of the directional plate 6 is arranged in a J shape, a guide groove 10 is arranged at the front end of the guide plate 9, the section of the guide groove 10 is arranged in an arc shape, a guide block 11 is slidably connected in the guide groove 10, the same guide spring 12 is fixed between the guide block 11 and the inner wall of the guide groove 10 through a bolt, the same connecting rod 13 is fixed between the guide block 11 and the connecting frame 5 through a bolt, a positioning mechanism is arranged on the guide plate 9, a holding mechanism is arranged on the directional plate 6, the handle 2 is held by the holding mechanism, the welding head 3 is aligned to a welding seam part, a proper inclination angle is aligned by a hand, the force is applied to the orientation plate 6 through the handle 7, the orientation plate 6 rotates around the fixing block 4 along with the connecting frame 5, the bottom of the orientation plate 6 is contacted with the working table top or the table top, the hand can be stably supported through the contact stress of the welding head 3 and the welding seam part and the contact stress between the orientation plate 6 and the working table top, the hand is effectively prevented from shaking to cause angle deviation and further influence on the welding quality, meanwhile, when the connecting frame 5 rotates, the connecting rod 13 is synchronously driven to move, the connecting rod 13 moves along the arc-shaped guide groove 10 along with the guide block 11, after the connecting rod moves to a set angle, the angle is positioned by the positioning mechanism, after the angle is set, the control switch 14 can be pressed at one time, drag welder 1 on one side and remove along the route to accomplish accurate welding process, and the 6 cross-sections of directional board set to J shape, can make directional board 6 can form the stable stay between arbitrary angle and the table surface in the normal use, make directional removal effect better.

Further, positioning mechanism includes locating piece 17, a plurality of annular array distributed's first recess 15 have been seted up to guide way 10 circumference inner wall, first recess 15 top inner wall has first spring 16 through the bolt fastening, locating piece 17 is fixed in first spring 16 bottom through the bolt fastening, locating piece 17 cross-section sets to the arc, guide block 11 and locating piece 17 contact position have seted up the draw-in groove of matcing, after moving to established angle, curved locating piece 17 and the draw-in groove that corresponds form the butt joint, the first spring 16 of connecting this locating piece 17 is in by compression state this moment, consequently, first spring 16's elasticity forms the extrusion to locating piece 17, thereby form the card to the position of guide block 11, thereby make the angle of directional board 6 more stable.

Further, first limiting grooves 18 are formed in inner walls of two ends of the first groove 15, first limiting blocks 19 are connected in the first limiting grooves 18 in a sliding mode, and the first limiting blocks 19 and the positioning blocks 17 are fixed through bolts, so that the positioning blocks 17 can be limited and moved.

In this embodiment, referring to fig. 6, mounting groove 20 has been seted up to locating piece 17 circular arc outer wall, be connected with the interior axle 21 that a plurality of annular array distribute through the bearing rotation between the mounting groove 20 both ends inner wall, interior axle 21 goes up the cover and is established and be fixed with sleeve shaft 22, form the butt joint when locating piece 17 and the draw-in groove that corresponds, block guide 11 blocks regularly, at this moment, sleeve shaft 22's surface and guide block 11 direct contact, and with the guide block 11 between produce be the stiction, thereby make the card effect to guide block 11 improve, when orientation board 6 rotates the seek angle, produce rolling friction between sleeve shaft 22 and the guide block 11, thereby reduce the frictional resistance when moving guide block 11, thereby make the rotation process of orientation board 6 more nimble laborsaving.

Furthermore, the circumferential outer wall of the sleeve shaft 22 is provided with a plurality of resistance-increasing grooves 23 distributed in an annular array, and the cross sections of the resistance-increasing grooves 23 are trapezoidal, so that the above-mentioned clamping effect can be further promoted.

In this embodiment, referring to fig. 7-8, the holding mechanism includes a handle 7, the handle 7 is disposed between the guide plate 9 and the handle 2, the cross-section of the handle 7 is U-shaped, one side of the handle 7 close to the guide plate 9 is provided with a second groove 24, a side wall of the second groove 24 is fixed with a second spring 25 through a bolt, the other side of the second spring 25 is fixed with an inner rod 8 through a bolt, the two inner rods 8 are fixed with the orientation plate 6 through bolts, i.e., when holding the handle 7, the handle 7 and the handle 2 can be pulled to be attached, thereby effectively preventing the orientation plate 6 from rotating when moving, slightly loosening the palm when adjusting the angle of the orientation plate 6, i.e., under the action of the second spring 25, the handle 7 is pulled to move to the side far away from the handle 2, and thus facilitating the angle adjustment of the orientation plate 6.

Further, second spacing groove 26 has all been seted up to second recess 24 both sides inner wall, and sliding connection has second stopper 27 in second spacing groove 26, passes through the bolt fastening between second stopper 27 and the interior pole 8, can carry out spacing removal to interior pole 8.

In the embodiment, referring to fig. 9-10, the arc outer wall of the directional plate 6 is provided with a plurality of groups of third grooves 28 distributed in an annular array, the inner wall of the top of each third groove 28 is fixed with a third spring 29 through a bolt, the bottom of each third spring 29 is fixed with a mounting block 30 through a bolt, the bottom of each mounting block 30 is provided with a movable groove 31, the inner walls at two sides of each movable groove 31 are rotatably connected with a same roller 32 through bearings, when the welding movement is performed, the roller 32 contacts and rolls with the workbench surface, so that the frictional resistance between the roller and the workbench surface can be further reduced, the movement process is more labor-saving and stable, the welding effect is improved, meanwhile, when the workbench surface is uneven, under the action of the third springs 29, the roller 32 can move in the third grooves 28 together with the mounting blocks 30, so that all the rollers 32 can be attached to the terrain of the workbench surface, so that the orientation plate 6 is kept in balance, thereby further improving the welding effect.

Further, third limiting grooves 33 have been all seted up to third recess 28 both sides inner wall, and sliding connection has third stopper 34 in third limiting groove 33, and two third stoppers 34 all and installation piece 30 between fixed connection, can carry out spacing removal to installation piece 30.

The invention has the beneficial effects that:

by holding the handle 7 and the handle 2, the welding head 3 is aligned to the welding seam part, a proper inclination angle is aligned through the hand, the force is applied to the orientation plate 6 through the handle 7, the orientation plate 6 rotates around the fixing block 4 along with the connecting frame 5, the bottom of the orientation plate 6 is contacted with the working table top or the table top, the hand can be stably supported through the contact stress of the welding head 3 and the welding seam part and the contact stress between the orientation plate 6 and the working table top, so that the hand is effectively prevented from shaking to cause angle deviation and further influence on the welding quality, meanwhile, when the connecting frame 5 rotates, the connecting rod 13 is synchronously driven to move, the connecting rod 13 moves along the arc-shaped guide groove 10 along with the guide block 11, after the connecting rod moves to a set angle, the arc-shaped positioning block 17 is in butt joint with the corresponding clamping groove, and at the moment, the first spring 16 connected with the positioning block 17 is in a compressed state, therefore, the elastic force of the first spring 16 extrudes the positioning block 17, so that the position of the guide block 11 is clamped, the angle of the orientation plate 6 is more stable, the control switch 14 can be pressed while the angle is shaped, the welding gun 1 is dragged to move along the path, the accurate welding process is completed, the cross section of the orientation plate 6 is J-shaped, stable support can be formed between any angle of the orientation plate 6 in normal use and the working table, and the orientation moving effect is better.

Further, be provided with interior axle 21 and sleeve shaft 22, form the butt joint when locating piece 17 and the draw-in groove that corresponds, block 11 with the guide block and block regularly, at this moment, sleeve shaft 22's surface and guide block 11 direct contact, and with the guide block 11 between produce be stiction, thereby make the card effect to guide block 11 improve, when the deflector 6 rotates and looks for the angle, produce rolling friction between sleeve shaft 22 and the guide block 11, thereby reduce the frictional resistance when moving guide block 11, thereby make the rotation process of deflector 6 more nimble laborsaving, and be provided with resistance-increasing groove 23, resistance-increasing groove 23 cross-section sets to trapezoidal, can further promote foretell card effect.

Furthermore, a holding mechanism is arranged, so that the handle 7 can be pulled to be attached to the handle 2 when the handle 7 is held, the rotation of the orientation plate 6 is effectively prevented when the orientation plate 6 is moved, and when the orientation plate 6 is angularly rotated and adjusted, the palm is slightly loosened, so that the handle 7 is pulled to move to one side away from the handle 2 under the action of the second spring 25, and the angle adjustment of the orientation plate 6 can be facilitated.

Further, when carrying out welding movement, gyro wheel 32 and table surface contact and roll, can further reduce and table surface between the frictional resistance, thereby make the process of removal more laborsaving stable, thereby improve the welding effect, simultaneously, when table surface unevenness, under the effect of third spring 29, gyro wheel 32 can follow installation piece 30 and contract together and move in third recess 28, thereby make all gyro wheels 32 can tend to the topography of table surface, make oriented plate 6 keep balance, thereby further improve the welding effect.

The working principle is as follows: when the welding gun is used, the welding head 3 is aligned to a welding seam part by holding the grip 7 and the handle 2, a proper inclination angle is aligned by a hand, the force is applied to the orientation plate 6 by the grip 7, the orientation plate 6 rotates around the fixed block 4 along with the connecting frame 5, the bottom of the orientation plate 6 is contacted with a working table top or a table top, the hand can be stably supported by the contact stress of the welding head 3 and the welding seam part and the contact stress between the orientation plate 6 and the working table top, meanwhile, the connecting rod 13 is synchronously driven to move when the connecting frame 5 rotates, the connecting rod 13 moves along the arc-shaped guide groove 10 along with the guide block 11, the arc-shaped positioning block 17 is butted with the corresponding clamping groove after the connecting rod moves to a set angle, and the welding gun 1 can move along a path while pressing the control switch 14 after the angle is set, finish accurate welding, when grasping handle 7, can pull handle 7 and handle 2 and laminate, and when carrying out the angular rotation regulation to orientation board 6, loosen the palm a little, can be under the effect of second spring 25, pull handle 7 to keeping away from handle 2 one side and remove, can carry out the angular adjustment to orientation board 6, when carrying out welding movement, gyro wheel 32 and table surface contact and roll, simultaneously, when table surface unevenness, under the effect of third spring 29, gyro wheel 32 can follow installation piece 30 and carry out the shrink together in third recess 28 and remove, make all gyro wheels 32 can attach to table surface's topography, make orientation board 6 keep balance.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims

1. A handheld laser welding device comprises a welding gun (1) and is characterized in that a welding head (3) is fixedly connected to the rear end of the welding gun (1), a handle (2) is fixedly sleeved on the welding gun (1), a control switch (14) is fixedly penetrated through the bottom of the handle (2), a fixed block (4) and a guide plate (9) are fixedly connected to one side of the welding gun (1), a connecting frame (5) is hinged to the other side of the fixed block (4), a directional plate (6) is fixedly connected to the other side of the connecting frame (5), the cross section of the directional plate (6) is arranged in a J shape, a guide groove (10) is formed in the front end of the guide plate (9), the cross section of the guide groove (10) is arranged in an arc shape, a guide block (11) is slidably connected in the guide groove (10), a same guide spring (12) is fixedly connected between the guide block (11) and the inner wall of the guide groove (10), a same connecting rod (13) is fixedly connected between the guide block (11) and the connecting frame (5), the guide plate (9) is provided with a positioning mechanism, and the orientation plate (6) is provided with a holding mechanism.

2. A hand-held laser welding apparatus as defined in claim 1, wherein: positioning mechanism includes locating piece (17), and a plurality of annular array distribution's first recess (15) are seted up to guide way (10) circumference inner wall, first recess (15) top inner wall fixedly connected with first spring (16), and locating piece (17) fixed connection is in first spring (16) bottom, and locating piece (17) cross-section sets the arc, and guide block (11) and locating piece (17) contact position set up the draw-in groove of matching.

3. A hand-held laser welding apparatus as defined in claim 2, wherein: first limiting grooves (18) are formed in the inner walls of the two ends of the first groove (15), first limiting blocks (19) are connected in the first limiting grooves (18) in a sliding mode, and the first limiting blocks (19) are fixedly connected with the positioning blocks (17).

4. A hand-held laser welding apparatus as defined in claim 3, wherein: the positioning block (17) is characterized in that an installation groove (20) is formed in the arc outer wall of the positioning block (17), a plurality of inner shafts (21) distributed in an annular array are rotatably connected between the inner walls of the two ends of the installation groove (20), and sleeve shafts (22) are fixedly sleeved on the inner shafts (21).

5. The hand-held laser welding apparatus of claim 4, wherein: the resistance-increasing groove is characterized in that a plurality of resistance-increasing grooves (23) distributed in an annular array are formed in the circumferential outer wall of the sleeve shaft (22), and the cross sections of the resistance-increasing grooves (23) are trapezoidal.

6. A hand-held laser welding apparatus as defined in claim 1, wherein: the holding mechanism comprises a handle (7), the handle (7) is arranged between a guide plate (9) and a handle (2), the cross section of the handle (7) is arranged to be U-shaped, a second groove (24) is formed in one side, close to the guide plate (9), of the handle (7), a second spring (25) is fixedly connected to the side wall of the second groove (24), an inner rod (8) is fixedly connected to the other side of the second spring (25), and the two inner rods (8) are fixedly connected with the guide plate (6).

7. A hand-held laser welding apparatus as defined in claim 6, wherein: second spacing groove (26) have all been seted up to second recess (24) both sides inner wall, and sliding connection has second stopper (27) in second spacing groove (26), fixed connection between second stopper (27) and interior pole (8).

8. A hand-held laser welding apparatus as defined in claim 1, wherein: the directional plate (6) circular arc outer wall is provided with a plurality of groups of third grooves (28) distributed in an annular array manner, the inner wall of the top of each third groove (28) is fixedly connected with a third spring (29), the bottom of each third spring (29) is fixedly connected with an installation block (30), a movable groove (31) is formed in the bottom of each installation block (30), and the inner walls of two sides of each movable groove (31) are rotatably connected with a same roller (32).

9. A hand-held laser welding apparatus as defined in claim 8, wherein: third spacing groove (33) have all been seted up to third recess (28) both sides inner wall, and sliding connection has third stopper (34) in third spacing groove (33), two third stoppers (34) all with install fixed connection between piece (30).