A laser welding positioning device for the metal outer frame of 3C products

Abstract

The present invention provides a radium welding positioning device for the metal outer frame of a 3C product, comprising a body, a top wall of the body being provided with a symmetrically arranged clamping groove and a positioning groove, a top wall of the body being provided with a sliding groove symmetrically arranged with respect to the clamping groove, an inner wall of the sliding groove being fixedly connected with a sliding rod, and further comprising: a gantry, which is slidably connected to the body through the sliding rod and the sliding groove, a welding component, which is slidably connected to the inner wall of the gantry, a positioning assembly, the positioning assembly comprising a driving shaft rotatably connected to the inner wall of the body, a driving gear fixedly connected to the outer wall of the driving shaft and a centering component slidably connected to the inner wall of the positioning groove, and a clamping component, which is slidably connected to the inner wall of the clamping groove; the present invention can center and position the workpiece while clamping it, thereby increasing the fixing effect and improving the accuracy of subsequent welding without repeatedly moving the workpiece, thereby achieving the purpose of adjusting the welding position, increasing the welding accuracy and improving the welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of machine mid-frame welding, and in particular to a radium welding positioning device for a metal outer frame of a 3C product. Background Art

[0002] Laser welding utilizes the interaction between laser beams and matter to perform cutting, welding, surface treatment, drilling, micro-machining, and other tasks on materials (including metals and non-metals) as a light source and for object recognition. Mobile phone frame assembly involves small metal parts that require laser welding, and small parts require precise positioning of the product's contours. Laser welding is a type of fusion welding that uses a laser beam as energy source, impacting the weld joint to achieve the desired weld.

[0003] After searching, an automatic welding device for the middle frame of a mobile phone proposed in the Chinese patent (application number: 202020030513.8) includes a first mounting plate, and self-locking universal wheels are fixedly installed at the four corners of the bottom wall of the first mounting plate, and fixed rods are fixedly connected to the four corners of the top wall of the first mounting plate. The top walls of the four fixed rods are fixedly connected to the same second mounting plate, and a welding machine is fixedly installed on the rear side of the middle position of the top wall of the second mounting plate. A third mounting plate is fixedly installed at the center position of the top wall of the first mounting plate, and fixed plates are symmetrically fixedly connected on both sides of the top wall of the third mounting plate.

[0004] However, the above device still has certain shortcomings: 1. It cannot center the workpiece before clamping, which will lead to deviation during welding, and the fixing method is relatively complicated, inconvenient to operate, and the welding efficiency is low; 2. It is inconvenient to adjust the welding position according to welding requirements, and it is impossible to deal with the smoke generated by welding, which reduces the working environment of the processing workshop and causes damage to the health of the workers.

[0005] Therefore, we have made improvements to this and proposed a radium welding positioning device for the metal frame of 3C products in order to solve the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to address the problem that the workpiece can currently be centered and positioned before clamping, which will lead to deviations during welding, and the fixing method is relatively complicated, inconvenient to operate, low welding efficiency, inconvenience in adjusting the welding position according to welding requirements, and inability to process the smoke generated by welding, which degrades the working environment of the processing workshop and causes harm to the health of the workers.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] The laser welding positioning device of the metal frame of this 3C product is used to improve the above problems.

[0009] The present invention is specifically as follows:

[0010] A radium welding positioning device for a metal outer frame of a 3C product comprises a body, wherein the top wall of the body is provided with a clamping groove and a positioning groove symmetrically arranged, the top wall of the body is provided with a sliding groove symmetrically arranged with respect to the clamping groove, the inner wall of the sliding groove is fixedly connected to a sliding rod, and further comprises:

[0011] The gantry is connected to the machine body through sliding rods and sliding slots, and is used to adjust the welding position;

[0012] Welding components, slidably connected to the inner wall of the gantry, used for welding workpieces;

[0013] A positioning assembly, comprising a drive shaft rotatably connected to the inner wall of the machine body, a drive gear fixedly connected to the outer wall of the drive shaft, and a centering component slidably connected to the inner wall of the positioning groove, wherein two sets of centering components are symmetrically arranged about the drive shaft for centering and positioning the workpiece;

[0014] A clamping member, slidably connected to the inner wall of the clamping groove, the clamping member cooperates with the driving gear and is used to fix the workpiece before welding;

[0015] The dust collecting component is connected to the top wall of the machine body and is used for absorbing smoke and dust.

[0016] As a preferred technical solution of the present invention, the centering component includes a support frame slidably connected to the inner wall of the positioning groove, a positioning frame slidably connected to the inner wall of the support frame, and a first rack fixedly connected to the side wall of the support frame. The first rack is engaged with the driving gear, and the outer wall of the positioning frame is also sleeved with a first elastic member. The positioning frame is also provided with evenly distributed positioning wheels at a section away from the support frame.

[0017] As a preferred technical solution of the present invention, the welding component includes a welding frame slidably connected to the inner wall of the gantry, a mounting frame slidably connected to the inner wall of the welding frame, an adjusting screw rotatably connected to the inner wall of the welding frame, a radium welding machine fixedly connected to the side wall of the mounting frame, and a welding gun rotatably connected to the mounting frame away from the welding frame by a fastening bolt. The adjusting screw is threadedly connected to the mounting frame, and the side wall of the welding frame is also fixedly connected to a first motor, and the output end of the first motor is fixedly connected to the adjusting screw.

[0018] As a preferred technical solution of the present invention, the top wall of the gantry is further provided with a lifting screw, which is threadedly connected to the gantry and rotatably connected to the welding frame, and a handle is fixedly connected to the top of the lifting screw.

[0019] As a preferred technical solution of the present invention, the bottom of the two sliding ends of the gantry are also fixedly connected to a second rack, the inner wall of the body is also rotatably connected to a support shaft, the outer wall of the support shaft is also fixedly connected to a displacement gear meshing with the second rack, the inner wall of the body is also fixedly connected to a second motor, and the output end of the second motor is fixedly connected to the support shaft.

[0020] As a preferred technical solution of the present invention, the clamping parts are symmetrically arranged in two groups about the driving axis, and the clamping parts include a clamping frame slidably connected to the inner wall of the clamping groove, a third rack fixedly connected to the side wall of the clamping frame, and a clamping plate fixedly connected to the top of the clamping frame, and the third rack is meshed with the driving gear.

[0021] As a preferred technical solution of the present invention, the dust collection component includes an exhaust fan fixedly connected to the top wall of the machine body and an exhaust gas treatment device, and the exhaust fan is connected to the exhaust gas treatment device through a ventilation pipe.

[0022] As a preferred technical solution of the present invention, a third motor is further provided on the inner wall of the machine body, and the output end of the third motor is fixedly connected to the drive shaft.

[0023] As a preferred technical solution of the present invention, the top wall of the body is also slidably connected to a telescopic frame, the inner wall of the telescopic frame is provided with a goggle lens, the side wall of the telescopic frame is also provided with a handle, and the side wall of the body is also provided with a limit card that cooperates with the telescopic frame.

[0024] As a preferred technical solution of the present invention, the two groups of the first racks and the third racks are both located on the driving gear and meshed with each other.

[0025] In the solution of the present invention:

[0026] 1. By cooperating with the positioning component and the clamping component, the workpiece can be centered and positioned while being clamped, thereby increasing the fixing effect and improving the accuracy of subsequent welding. This solves the problem in the prior art that the workpiece cannot be centered and positioned before clamping, which leads to deviation during welding, and the fixing method is relatively complicated, inconvenient to operate, and low welding efficiency.

[0027] 2. By cooperating with the welding parts through the setting of the adjusting screw and the lifting screw, the relative position of the welding gun and the workpiece can be changed during welding, thereby achieving the purpose of adjusting the welding position without repeatedly moving the workpiece, thereby increasing the welding accuracy and improving the welding efficiency;

[0028] 3. By setting up dust suction components, the smoke and dust generated during welding can be extracted and processed to prevent the smoke and dust from causing damage to the workers' bodies. At the same time, the workers' eyes can be protected by goggles, which increases the health of welding and avoids affecting the internal environment of the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is one of the three-dimensional structural diagrams of the present invention;

[0030] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 3 This is one of the partial structural diagrams of the present invention;

[0032] Figure 4 This is the second schematic diagram of the partial structure of the present invention;

[0033] Figure 5 This is the third schematic diagram of the partial structure of the present invention;

[0034] Figure 6 This is the fourth schematic diagram of the partial structure of the present invention;

[0035] Figure 7 For the present invention Figure 5 A magnified view of the structure in the middle;

[0036] Figure 8 For the present invention Figure 6 A magnified view of the structure in middle B;

[0037] Figure 9 This is a structural diagram of embodiment 2 of the present invention;

[0038] Figure 10 This is a structural diagram of embodiment 3 of the present invention.

[0039] In the figure: 1. body; 11. exhaust fan; 12. exhaust gas treatment device; 13. third motor; 14. telescopic frame; 15. goggle lens; 16. handle; 17. limit card; 2. clamping groove; 21. clamping frame; 22. third rack; 23. clamping plate; 3. positioning groove; 31. drive shaft; 32. support frame; 33. positioning frame; 34. first rack; 35. drive gear; 36. first elastic member; 37. positioning wheel; 4. sliding groove; 41. sliding rod; 42. gantry; 43. welding frame; 44. mounting frame; 45. adjusting screw; 46. fastening bolt; 47. welding gun; 48. first motor; 49. lifting screw; 5. second rack; 51. support shaft; 52. displacement gear; 53. second motor; 54. turning handle; 55. radium welding machine. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1:

[0042] See also Figure 1-8 This embodiment provides a radium welding positioning device for a metal outer frame of a 3C product, comprising a body 1, a top wall of which is further provided with a clamping groove 2 and a positioning groove 3 symmetrically arranged, a top wall of which is further provided with a sliding groove 4 symmetrically arranged with respect to the clamping groove 2, a sliding rod 41 being fixedly connected to the inner wall of the sliding groove 4, and further comprising:

[0043] The gantry 42 is slidably connected to the body 1 through the sliding rod 41 and the sliding slot 4, and is used to adjust the welding position;

[0044] Welding components, slidably connected to the inner wall of the gantry 42, used for welding workpieces;

[0045] The positioning assembly includes a drive shaft 31 rotatably connected to the inner wall of the body 1, a drive gear 35 fixedly connected to the outer wall of the drive shaft 31, and a centering component slidably connected to the inner wall of the positioning groove 3. The centering components are symmetrically arranged in two groups about the drive shaft 31 for centering and positioning the workpiece;

[0046] The clamping member is slidably connected to the inner wall of the clamping groove 2, and the clamping member cooperates with the driving gear 35 to fix the workpiece before welding;

[0047] The dust collecting component is connected to the top wall of the machine body 1 and is used for absorbing smoke and dust.

[0048] By cooperating with the positioning component, the workpiece can be centered and positioned while being clamped, thereby increasing the fixing effect and improving the accuracy of subsequent welding. This solves the problem in the prior art that the workpiece cannot be centered and positioned before clamping, which in turn leads to deviations during welding, and the fixing method is relatively complicated, inconvenient to operate, and has low welding efficiency.

[0049] like Figure 3-8As shown, as a preferred embodiment, on the basis of the above method, the centering component further includes a support frame 32 slidably connected to the inner wall of the positioning groove 3, a positioning frame 33 slidably connected to the inner wall of the support frame 32 and a first rack 34 fixedly connected to the side wall of the support frame 32, the first rack 34 is meshed with the driving gear 35, and the outer wall of the positioning frame 33 is also sleeved with a first elastic member 36, and a section of the positioning frame 33 away from the support frame 32 is also provided with evenly distributed positioning wheels 37, the driving gear 35 rotates, and then the two groups of support frames 32 are pulled toward each other through the two groups of first racks 34, thereby driving the positioning frame 33 and the positioning wheel 37 to center the workpiece, and under the setting of the first elastic member 36, the centering positioning range is increased to achieve the purpose of positioning middle frames of different specifications.

[0050] like Figure 1-8 As shown, as a preferred embodiment, on the basis of the above method, further, the welding components include a welding frame 43 slidably connected to the inner wall of the gantry 42, a mounting frame 44 slidably connected to the inner wall of the welding frame 43, an adjusting screw 45 rotatably connected to the inner wall of the welding frame 43, a radium welder 55 fixedly connected to the side wall of the mounting frame 44, and a welding gun 47 rotatably connected to the mounting frame 44 away from the welding frame 43 by a fastening bolt 46. The adjusting screw 45 is threadedly connected to the mounting frame 44, and the side wall of the welding frame 43 is also fixedly connected to a first motor 48. The output end of the first motor 48 is fixedly connected to the adjusting screw 45. The radium welder 55 and the connection method of the radium welder 55 and the welding gun 47 are existing technologies and will not be elaborated here.

[0051] like Figure 1-6 As shown, as a preferred embodiment, on the basis of the above method, the top wall of the gantry 42 is further provided with a lifting screw 49, the lifting screw 49 is threadedly connected to the gantry 42, and the lifting screw 49 is rotatably connected to the welding frame 43, and the top of the lifting screw 49 is also fixedly connected with a turning handle 54, and the turning handle 54 rotates the lifting screw 49 to adjust the position of the welding frame 43 between the gantry 42.

[0052] like Figure 1-6 As shown, as a preferred embodiment, on the basis of the above method, further, the bottom of the two sliding ends of the gantry 42 is also fixedly connected to the second rack 5, the inner wall of the body 1 is also rotatably connected to the support shaft 51, the outer wall of the support shaft 51 is also fixedly connected to the displacement gear 52 meshing with the second rack 5, the inner wall of the body 1 is also fixedly connected to the second motor 53, the output end of the second motor 53 is fixedly connected to the support shaft 51, the second motor 53 is started, and the displacement gear 52 is driven to rotate through the support shaft 51, and the gantry 42 is driven to move through the second rack 5, thereby achieving the purpose of longitudinal adjustment of the gantry 42.

[0053] like Figure 1-8As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, two groups of clamping parts are symmetrically arranged about the driving shaft 31, and the clamping parts include a clamping frame 21 slidably connected to the inner wall of the clamping groove 2, a third rack 22 fixedly connected to the side wall of the clamping frame 21, and a clamping plate 23 fixedly connected to the top of the clamping frame 21. The third rack 22 is meshed with the driving gear 35. When the driving gear 35 rotates, it also pulls the clamping frame 21 and the clamping plate 23 through the third rack 22 to fix the workpiece. The workpiece can be centered while being clamped, thereby increasing the fixing effect and improving the accuracy of subsequent welding.

[0054] like Figure 1-8 As shown, as a preferred embodiment, on the basis of the above method, the dust collection component further includes an exhaust fan 11 and an exhaust gas treatment device 12 fixedly connected to the top wall of the body 1, and the exhaust fan 11 is connected to the exhaust gas treatment device 12 through a ventilation pipe. The exhaust fan 11 and the exhaust gas treatment device 12 can be used to extract and treat the smoke generated during welding to prevent the smoke from causing damage to the workers' bodies.

[0055] like Figure 1-3 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a third motor 13 is provided on the inner wall of the body 1 , and the output end of the third motor 13 is fixedly connected to the driving shaft 31 .

[0056] like Figure 1-8 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the top wall of the body 1 is also slidably connected to a telescopic frame 14, the inner wall of the telescopic frame 14 is provided with a goggle lens 15, the side wall of the telescopic frame 14 is also provided with a handle 16, and the side wall of the body 1 is also provided with a limit card 17 that cooperates with the telescopic frame 14. At the same time, the limit card 17 can be loosened, and the telescopic frame 14 can be pulled out of the body 1. The eyes of the workers are protected by the goggle lens 15, which increases the health of welding and avoids affecting the internal environment of the workshop.

[0057] like Figure 1-7 As shown, as a preferred embodiment, based on the above method, further, the two sets of first racks 34 and third racks 22 are both located at the driving gear 35 and meshed and connected, so that the support frame 32 and the clamping frame 21 can move in the same direction or in the opposite direction.

[0058] Specifically, when the radium welding positioning device for the metal outer frame of the 3C product is in use: the workpiece to be welded is placed on the top of the machine body 1, the third motor 13 is started, thereby driving the driving gear 35 to rotate, and then the two sets of support frames 32 are pulled toward each other by the two sets of first racks 34, thereby driving the positioning frame 33 and the positioning wheel 37 to center the workpiece, and under the setting of the first elastic member 36, the centering positioning range is increased to achieve the purpose of positioning middle frames of different specifications. At the same time, the positioning wheel 37 is provided to avoid damage to the workpiece during subsequent clamping and fixing. When the driving gear 35 rotates, it also pulls the clamping frame 21 and the clamping plate 23 to fix the workpiece through the third rack 22, which can center and position the workpiece while clamping the workpiece, increase the fixing effect, and improve the accuracy of subsequent welding, thereby solving the problem that the workpiece cannot be centered and positioned before clamping in the prior art, which will lead to deviation during welding, and the fixing method is relatively complicated, inconvenient to operate, and low welding efficiency.

[0059] After the fixation is completed, the lifting screw 49 can be rotated by turning the handle 54 to adjust the position of the welding frame 43 between the gantry frames 42, and the fastening bolts 46 can be loosened to adjust the angle of the welding gun 47, and the second motor 53 is started, and the displacement gear 52 is driven to rotate through the support shaft 51, and the gantry frame 42 is driven to move through the second rack 5, so as to achieve the purpose of longitudinal adjustment of the gantry frame 42. At the same time, the first motor 48 can be started according to demand, and the position of the mounting frame 44 in the welding frame 43 can be adjusted by adjusting the screw 45. The relative position of the welding gun 47 and the workpiece is changed during connection, thereby achieving the purpose of adjusting the welding position. There is no need to repeatedly move the workpiece, which increases the welding accuracy and improves the welding efficiency. The exhaust fan 11 and the exhaust gas treatment device 12 are set to extract and treat the smoke generated during welding to avoid the smoke from causing damage to the worker's body. At the same time, the limit clamp 17 can be loosened, and the telescopic frame 14 can be pulled out of the body 1. The worker's eyes are protected by the goggle lens 15, which increases the health of welding and avoids affecting the internal environment of the workshop.

[0060] Example 2

[0061] like Figure 9As shown, on the basis of Example 1, a circular outer cylinder 470 is sleeved on the outer cylinder 47a of the welding gun 47, and a plurality of elastic sheets 471 uniformly distributed around the circumference are provided at the lower end of the circular outer cylinder 470. The elastic sheets 471 are arc-shaped, and two adjacent elastic sheets 471 form lateral slots 472 connected to the interior of the circular outer cylinder 470, and the inner diameter of the circular outer cylinder 470 is larger than the outer diameter of the outer cylinder, and an annular space is formed between the outer cylinder and the circular outer cylinder 470. A filter mesh layer 473, an adsorption mesh layer 474 and a purification surface layer 475 are arranged in sequence from bottom to top in the annular space, and an opening is provided at the top of the circular outer cylinder 470.

[0062] The radium welding smoke enters the circular outer cylinder 470 from the side notch 472 and is discharged into the air through multiple layers of filtration, while the elastic sheet 471 can form an impact buffering effect on the welding gun 47, for example, radially and axially.

[0063] The circular outer cylinder 470 is fixed to the mounting frame 44. The fixing method is, for example, a clamp.

[0064] Example 3

[0065] like Figure 10 As shown, based on Example 1 or Example 2, a positioning fixture 6 is provided at the center of the working surface of the machine body 1, and the positioning fixture 6 includes a lower component 60, an upper component 61 is provided on the lower component 60, and a circular space 62 is provided between the upper surface of the lower component 60 and the lower surface of the upper component 61. A plurality of horizontal through holes 63 connected to the circular space 62 are provided on the side of the lower component 60 close to the dust collection component, and a plurality of inclined holes 64 inclined from top to bottom toward the dust collection component side are provided on the upper component 61. The inclined holes 64 are distributed in a circle and the lower hole opening is connected to the circular space 62.

[0066] When the dust collecting component is performing dust collection, the welding smoke will enter the inclined hole 64 and then pass through the annular space 62 so that the smoke is discharged from the horizontal through hole 63 to the dust collecting component.

[0067] The above solution can further extract the welding smoke to prevent it from affecting the welding quality. Secondly, the above structure can cool the positioning fixture 6 to prevent the next product to be laser welded from being affected by the temperature of the positioning fixture 6 and causing thermal deformation and the like.

[0068] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radium welding positioning device for a metal outer frame of a 3C product, comprising a body (1), characterized in that: The top wall of the machine body (1) is further provided with a symmetrically arranged clamping groove (2) and a positioning groove (3), the top wall of the machine body (1) is further provided with a sliding groove (4) symmetrically arranged with respect to the clamping groove (2), the inner wall of the sliding groove (4) is fixedly connected with a sliding rod (41), and further comprising: A gantry (42) is slidably connected to the machine body (1) via a sliding rod (41) and a sliding groove (4) and is used to adjust the welding position; A welding component, slidably connected to the inner wall of the gantry (42), used for welding workpieces; A positioning assembly, comprising a drive shaft (31) rotatably connected to the inner wall of the machine body (1), a drive gear (35) fixedly connected to the outer wall of the drive shaft (31), and a centering component slidably connected to the inner wall of the positioning groove (3), wherein two sets of the centering components are symmetrically arranged about the drive shaft (31) for centering and positioning a workpiece; A clamping member is slidably connected to the inner wall of the clamping groove (2), and the clamping member cooperates with the driving gear (35) to fix the workpiece before welding; A dust collecting component connected to the top wall of the machine body (1) for absorbing smoke and dust; The centering component comprises a support frame (32) slidably connected to the inner wall of the positioning groove (3), a positioning frame (33) slidably connected to the inner wall of the support frame (32), and a first rack (34) fixedly connected to the side wall of the support frame (32), the first rack (34) being meshed with a driving gear (35), a first elastic member (36) being sleeved on the outer wall of the positioning frame (33), and a section of the positioning frame (33) away from the support frame (32) being further provided with evenly distributed positioning wheels (37); The clamping parts are symmetrically arranged in two groups about the driving shaft (31), and the clamping parts include a clamping frame (21) slidably connected to the inner wall of the clamping groove (2), a third rack (22) fixedly connected to the side wall of the clamping frame (21), and a clamping plate (23) fixedly connected to the top of the clamping frame (21), and the third rack (22) is meshed and connected with the driving gear (35); The dust collecting component comprises an exhaust fan (11) fixedly connected to the top wall of the machine body (1) and an exhaust gas treatment device (12), wherein the exhaust fan (11) is connected to the exhaust gas treatment device (12) via a ventilation pipe; A third motor (13) is further provided on the inner wall of the machine body (1), and an output end of the third motor (13) is fixedly connected to a drive shaft (31); The top wall of the body (1) is also slidably connected to a telescopic frame (14), an inner wall of the telescopic frame (14) is provided with an eye protection lens (15), a side wall of the telescopic frame (14) is also provided with a handle (16), and a side wall of the body (1) is also provided with a limit clamp (17) that cooperates with the telescopic frame (14); The two groups of the first racks (34) and the third racks (22) are both located on the driving gear (35) and are meshed and connected.

2. The laser welding positioning device for the metal outer frame of a 3C product according to claim 1, characterized in that: The welding component comprises a welding frame (43) slidably connected to the inner wall of the gantry frame (42), a mounting frame (44) slidably connected to the inner wall of the welding frame (43), an adjusting screw (45) rotatably connected to the inner wall of the welding frame (43), a radium welding machine (55) fixedly connected to the side wall of the mounting frame (44), and a welding gun (47) rotatably connected to the mounting frame (44) away from the welding frame (43) through a fastening bolt (46), the adjusting screw (45) is threadedly connected to the mounting frame (44), and the side wall of the welding frame (43) is also fixedly connected to a first motor (48), and the output end of the first motor (48) is fixedly connected to the adjusting screw (45).

3. The laser welding positioning device for the metal frame of a 3C product according to claim 2, characterized in that: The top wall of the gantry (42) is also provided with a lifting screw (49), the lifting screw (49) is threadedly connected to the gantry (42), and the lifting screw (49) is rotatably connected to the welding frame (43), and the top of the lifting screw (49) is also fixedly connected to a turning handle (54).

4. The laser welding positioning device for the metal outer frame of a 3C product according to claim 3, characterized in that: The bottoms of the two sliding ends of the gantry (42) are also fixedly connected to a second rack (5); the inner wall of the machine body (1) is also rotatably connected to a support shaft (51); the outer wall of the support shaft (51) is also fixedly connected to a displacement gear (52) meshing with the second rack (5); the inner wall of the machine body (1) is also fixedly connected to a second motor (53); the output end of the second motor (53) is fixedly connected to the support shaft (51).

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