A laser welding device for the production of electric tool accessories and its working method

Abstract

The present invention is applicable to the technical field of laser welding for electric tool accessories, and provides a laser welding device and a working method for the production of electric tool accessories, including a spiral fixing component and an abutting component; the spiral fixing component includes a support plate, a driving motor, a cam, a reciprocating plate, a reciprocating block, a rotating rod, a spiral head, and a spiral member; the abutting component includes an adjusting motor, an adjusting shaft, a main hollow column, a sub-hollow column, and a roller; by screwing the spiral head along the opening direction of the threaded holes and threaded grooves in the metal shell and the heat dissipation hole cover, the formation of the internal threaded grooves in the threaded holes of the metal shell and the heat dissipation hole cover is ensured; the problem that the heat generated by laser welding is transferred to the surface of the metal shell, causing the threaded holes on the metal shell and the threaded holes on the heat dissipation hole cover to deform simultaneously is avoided, thereby improving the production quality of the metal shell and further improving the subsequent assembly of the metal shell with other components.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding for electric tool accessories, and more specifically, it relates to a laser welding device and its working method for the production of electric tool accessories. Background Art

[0002] Power tools are tools that use an electric motor or battery as power and drive a working head through a transmission mechanism for operation; they are widely used in multiple fields such as construction, decoration, machining, automotive repair, and home improvement; and electric tool accessories refer to various components or attachments used for power tools, and they work together to ensure the normal operation and high efficiency of power tools.

[0003] Among them, the metal shell is also one of the electric tool accessories. During production, the metal shell needs to be fixed to other components through laser welding, which can provide high-precision and high-strength connections and ensure that the metal shell is not easily aged or broken during long-term use; however, heat is generated during the use of power tools, and the accumulation of this heat will affect the service life of the metal shell. Therefore, holes need to be opened on the metal shell for heat dissipation, and a heat dissipation hole cover is welded on the basis of the holes to prevent dust from entering.

[0004] In the prior art, before welding the metal shell and the heat dissipation hole cover, a manipulator is generally used to clamp and fix both sides. However, due to the small volume of the heat dissipation hole cover, when welding the heat dissipation hole cover to the surface of the metal shell, the clamping end of the manipulator will block the welding path between the metal shell and the heat dissipation hole cover, thereby affecting the welding efficiency and reducing the welding quality.

[0005] At the same time, a number of threaded holes are provided on both the metal shell and the heat dissipation hole cover. The threaded holes are not only the key parts for connecting other components to the metal shell, but also factors strengthening the connection relationship between the metal shell and the heat dissipation holes; however, the heat generated by laser welding will be transferred to the surface of the metal shell, causing the threaded holes on the metal shell and the heat dissipation hole cover to deform, thereby reducing the production quality of the metal shell and being unfavorable for the subsequent assembly of the metal shell and other components; for this reason, a laser welding device and its working method for the production of electric tool accessories are now proposed to improve the existing problems. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a laser welding device and its working method for the production of electric tool accessories.

[0007] To achieve the above object, the present invention provides the following technical solutions: a laser welding device for the production of electric tool accessories, including a flipping assembly, a spiral fixing assembly, and an abutting assembly; wherein, for the flipping assembly, spiral fixing assemblies are symmetrically arranged in the radial direction at both ends of the flipping assembly, and an abutting assembly is further arranged on one side of the flipping assembly; the spiral fixing assembly includes a support plate, a driving motor arranged at one end of the bottom of the support plate, a cam arranged at the output end of the driving motor, a reciprocating plate arranged above the cam, a reciprocating block arranged at one end of the reciprocating plate, a rotating rod rotatably connected to the top of the reciprocating block, spiral heads symmetrically arranged at one end of the rotating rod in opposite directions, and a spiral member arranged on the rotating rod; the abutting assembly includes an adjusting motor, an adjusting shaft arranged at the output end of the adjusting motor, a main hollow column arranged on the adjusting shaft, a sub-hollow column arranged in the main hollow column, and a roller rotatably connected to one end of the sub-hollow column.

[0008] The present invention is further arranged as follows: the flipping assembly includes a support frame, a flipping motor arranged at the top of the support frame, flipping shafts symmetrically arranged in the radial direction above the support frame, a connecting frame arranged at one end of the flipping shaft, micro telescopic rods uniformly arranged on the side wall of the connecting frame, and suction cups arranged at the telescopic ends of the micro telescopic rods; the output end of the flipping motor is connected to one end of the flipping shaft far from the connecting frame, and the other end of the flipping shaft far from the connecting frame is rotatably connected to the top of the support frame.

[0009] The present invention is further arranged as follows: a robotic arm is further arranged on the side of the flipping assembly away from the abutting assembly, a welding torch is arranged at the execution end of the robotic arm, and a workbench is arranged at the bottom of the robotic arm; displacement motors are symmetrically arranged in the radial direction at the top of the workbench, displacement shafts are arranged at the output ends of the displacement motors, displacement blocks are arranged on the displacement shafts, displacement plates are arranged at the tops of the displacement blocks, telescopic plates are symmetrically arranged in the radial direction at the tops of the displacement plates, and an electric telescopic rod is arranged between the telescopic plates.

[0010] The present invention is further arranged as follows: the output end of the displacement motor is connected to the displacement shaft through a speed reducer, both ends of the displacement shaft are connected to the top of the workbench through bearing seats, the ends of the telescopic plates away from the displacement plates are all connected to the bottom of the support plate, and the telescopic end of the electric telescopic rod is connected to the bottom of the support plate.

[0011] The present invention is further arranged as follows: slide rails are symmetrically arranged in the radial direction on both sides of the displacement shaft, sliders are slidably connected to the slide rails, and the sides of the sliders away from the slide rails are connected to the bottom of the displacement plate.

[0012] The present invention is further configured such that: the output end of the driving motor penetrates through the top of the support plate and is connected to a cam, and a movable block is arranged on the side wall of one end of the cam away from the driving motor; the reciprocating plate is T-shaped, and a movable groove is radially formed at the top of the reciprocating plate, the movable block can slide in the movable groove, and a reciprocating groove is further formed at the top of the support plate, and the reciprocating block can slide in the reciprocating groove.

[0013] The present invention is further configured such that: the spiral member includes an extension frame, a guide rod arranged at the top of the extension frame, a guide block sliding on the guide rod, a rack arranged at the top of the guide block, and a gear meshing and driving with the rack; one end of the extension frame away from the guide rod is connected to the side wall of one of the telescopic plates, the guide rod is inclinedly distributed, and the gear can be sleeved on the rotating rod; a through groove is further formed at the top of the reciprocating block, and one end of the rack away from the guide block can be slidably matched in the through groove.

[0014] The present invention is further configured such that: a plug pin is arranged at one end of one of the rotating rods away from the reciprocating block, and an auxiliary cylinder is arranged at one end of the other rotating rod away from the reciprocating block, a slot is formed at one end of the auxiliary cylinder, and the plug pin can be inserted into the slot in a matching manner.

[0015] The present invention is further configured such that: a fixing frame is further arranged at the top of the workbench, the output end of the adjusting motor penetrates through the side wall of the fixing frame and is connected to an adjusting shaft, a micro cylinder is arranged in the main hollow column, and the telescopic end of the micro cylinder is connected to one end of the auxiliary hollow column away from the roller.

[0016] A laser welding method for manufacturing electric tool accessories uses the laser welding device for manufacturing electric tool accessories as described above, and includes the following steps:

[0017] S1. During the laser welding of the metal shell and the heat dissipation hole cover, the flipping assembly is started to synchronously flip the metal shell and the heat dissipation hole cover, so that the welding head of the laser welding device can weld along the path to be welded of the metal shell and the heat dissipation hole cover;

[0018] S2. When the laser gradually approaches the threaded hole where the metal housing and the heat dissipation hole cover are aligned, the drive motor starts, and its output drives the cam to rotate, thereby causing the cam to push the reciprocating plate forward. The reciprocating block slides synchronously with the reciprocating plate. During this process, on the one hand, the rotating rod is driven forward by the reciprocating block and enters the threaded hole of the metal housing, keeping the diameter of the threaded hole of the metal housing unchanged. On the other hand, when the reciprocating block slides, it also drives the spiral member to start. While the rotating rod moves forward, it can also rotate, so that the two spiral heads rotate synchronously, and then the two spiral heads engage and wind along the opening direction of the thread groove of the metal housing, ensuring the formation of the thread groove in the threaded hole of the metal housing.

[0019] S3. When the laser gradually approaches the threaded hole where the metal housing and the heat dissipation hole cover are aligned, another drive motor also starts. On the one hand, the rotating rod is driven forward by the reciprocating block and enters the threaded hole of the heat dissipation hole cover, keeping the diameter of the threaded hole of the heat dissipation hole cover unchanged. On the other hand, when the reciprocating block slides, it also drives the spiral member to start. While the rotating rod moves forward, it can also rotate, so that the two spiral heads rotate synchronously, and then the two spiral heads engage and wind along the opening direction of the thread groove of the heat dissipation hole cover, ensuring the formation of the thread groove in the threaded hole of the heat dissipation hole cover.

[0020] S4. During the operation of S1, the welding head of the laser welding device welds along the path where the metal housing and the heat dissipation hole cover are to be welded, and at the same time applies a downward pressure to the metal housing and the heat dissipation hole cover, causing the metal housing and the heat dissipation hole cover to tilt at an angle. Therefore, the adjustment motor starts, and its output drives the adjustment shaft to rotate, so that the main hollow column and the auxiliary hollow column rotate synchronously, and then the roller approaches the side wall of the metal housing to support the metal housing.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] (1) By starting the drive motor, its output drives the cam to rotate, thereby causing the cam to push the reciprocating plate forward. The reciprocating block slides synchronously with the reciprocating plate. During this process, on the one hand, the rotating rod is driven forward by the reciprocating block and enters the threaded hole of the metal housing, keeping the diameter of the threaded hole of the metal housing unchanged.

[0023] (2) By driving the reciprocating block to slide, the spiral member is activated, so that while the rotating rod moves forward, it can also rotate, so that the two spiral heads rotate synchronously, and then the two spiral heads engage and wind along the opening direction of the thread groove of the metal shell, ensuring the formation of the thread groove in the threaded hole of the metal shell; avoiding the problem that the heat generated by laser welding is transmitted to the surface of the metal shell, causing the threaded holes on the metal shell and the heat dissipation hole cover to deform, thus improving the production quality of the metal shell, and further improving the subsequent assembly of the metal shell with other components.

[0024] (3) By starting the adjustment motor, the output end drives the adjustment shaft to rotate, so that the main hollow column and the auxiliary hollow column rotate synchronously, so that the rollers approach the side wall of the metal shell to support the metal shell, thus ensuring the welding quality of the metal shell and the heat dissipation hole cover, and further improving the welding efficiency. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the laser welding device for the production of electric tool accessories of the present invention.

[0026] Figure 2 It is a schematic diagram of the overall structure of the flipping component in the present invention.

[0027] Figure 3 is Figure 2 the enlarged view in

[0028] Figure 4 It is a schematic diagram of the structure of the top of the workbench in the present invention.

[0029] Figure 5 It is a schematic diagram of the overall structure of the spiral fixing component in the present invention.

[0030] Figure 6 It is a schematic diagram of the overall structure of the reciprocating block and the through groove in the present invention.

[0031] Figure 7 It is a cross-sectional view of the auxiliary cylinder and the slot in the present invention.

[0032] Figure 8 It is a schematic diagram of the overall structure of the abutting component in the present invention.

[0033] Figure 9 It is an exploded view of the abutting component in the present invention.

[0034] Description of the reference numerals: 1. Flipping component; 11. Support frame; 12. Flipping motor; 13. Flipping shaft; 14. Connecting frame; 15. Micro telescopic rod; 16. Suction cup.

[0035] 2. Spiral fixing assembly; 21. Support plate; 211. Reciprocating groove; 22. Driving motor; 23. Cam; 231. Movable block; 24. Reciprocating plate; 241. Movable groove; 25. Reciprocating block; 251. Through groove; 26. Rotating rod; 261. Pin; 262. Auxiliary cylinder; 263. Slot; 27. Spiral head; 28. Spiral part; 281. Extension frame; 282. Guide rod; 283. Guide block; 284. Rack; 285. Gear;

[0036] 3. Abutting assembly; 31. Adjusting motor; 32. Adjusting shaft; 33. Main hollow column; 331. Micro cylinder; 34. Sub-hollow column; 35. Roller;

[0037] 4. Robot arm; 41. Welding torch;

[0038] 5. Workbench; 51. Displacement motor; 52. Displacement shaft; 53. Displacement block; 54. Displacement plate; 55. Telescopic plate; 56. Electric telescopic rod; 57. Slide rail; 58. Slide block; 59. Fixed frame. Detailed implementation manners

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0040] Please refer to Figures 1 - 9 , the present invention provides the following technical solutions:

[0041] In the first embodiment, refer to Figures 1 - 9 , a laser welding device for the production of electric tool accessories, including a flipping assembly 1, a spiral fixing assembly 2 and an abutting assembly 3; wherein, the function of the flipping assembly 1 is to flip the metal shell and the heat dissipation hole cover synchronously, so that the welding head of the laser welding device can weld along the path to be welded of the metal shell and the heat dissipation hole cover.

[0042] The function of the spiral fixing assembly 2 is that on the one hand, it can simultaneously enter the threaded holes of the metal shell and the heat dissipation hole cover, so that the threaded holes of the metal shell and the heat dissipation hole cover both maintain their original diameters; on the other hand, it can also make the spiral head 27 engage and wind along the opening direction of the thread grooves in the threaded holes of the metal shell and the heat dissipation hole cover, ensuring the formation of the thread grooves in the threaded holes of the metal shell and the heat dissipation hole cover; avoiding the problem that the heat generated by laser welding is transferred to the surface of the metal shell, causing the threaded holes on the metal shell and the threaded holes on the heat dissipation hole cover to deform simultaneously, thereby improving the production quality of the metal shell and further improving the subsequent assembly of the metal shell with other components.

[0043] The welding head of the laser welding device welds along the path where the metal shell and the heat dissipation hole cover are to be welded. At the same time, a downward pressure is applied to the metal shell and the heat dissipation hole cover, causing the metal shell and the heat dissipation hole cover to tilt at an angle. Therefore, the function of the abutting component 3 is to support the side wall of the metal shell, thus ensuring the welding quality of the metal shell and the heat dissipation hole cover and improving the welding efficiency.

[0044] Refer to Figures 1 - 3 , specifically, there is a flipping component 1. On both ends of the flipping component 1, spiral fixing components 2 are symmetrically arranged in the radial N direction. On one side of the flipping component 1, there is also an abutting component 3; the number of the spiral fixing components 2 is two.

[0045] Among them, during the laser welding process of the metal shell and the heat dissipation hole cover, the flipping component 1 is activated to synchronously flip the metal shell and the heat dissipation hole cover, so that the welding head of the laser welding device can weld along the path where the metal shell and the heat dissipation hole cover are to be welded.

[0046] Refer to Figures 4 - 7 , specifically, the spiral fixing component 2 includes a support plate 21, a driving motor 22 arranged at one end of the bottom of the support plate 21, a cam 23 arranged at the output end of the driving motor 22, a reciprocating plate 24 arranged above the cam 23, a reciprocating block 25 arranged at one end of the reciprocating plate 24, a rotating rod 26 rotatably connected to the top of the reciprocating block 25, spiral heads 27 symmetrically arranged at one end of the rotating rod 26, and a spiral member 28 arranged on the rotating rod 26.

[0047] Among them, when the laser gradually approaches the threaded holes where the metal shell and the heat dissipation hole cover are aligned, the driving motor 22 is activated, and its output end drives the cam 23 to rotate, so that the cam 23 pushes the reciprocating plate 24 to move forward. The reciprocating block 25 slides synchronously with the reciprocating plate 24. During this process, on the one hand, the rotating rod 26 will be driven by the reciprocating block 25 to move forward and enter the threaded hole of the metal shell, keeping the diameter of the threaded hole of the metal shell unchanged; on the other hand, when the reciprocating block 25 slides, it will also drive the spiral member 28 to start, so that when the rotating rod 26 moves forward, it can also rotate, so that the two spiral heads 27 rotate synchronously, and then the two spiral heads 27 engage and wind along the opening direction of the thread groove of the metal shell, ensuring the formation of the thread groove in the threaded hole of the metal shell; avoiding the problem that the heat generated by laser welding is transmitted to the surface of the metal shell, causing the threaded holes on the metal shell and the heat dissipation hole cover to deform simultaneously, thus improving the production quality of the metal shell and further improving the subsequent assembly of the metal shell with other components.

[0048] When the laser gradually approaches the threaded hole where the metal housing and the heat dissipation hole cover are aligned with each other, another drive motor 22 will also be activated. On the one hand, the rotating rod 26 will be driven forward by the reciprocating block 25 and enter the threaded hole of the heat dissipation hole cover, so that the threaded hole of the heat dissipation hole cover maintains its original diameter. On the other hand, when the reciprocating block 25 slides, it will also drive the spiral member 28 to start, so that while the rotating rod 26 moves forward, it can also rotate, so that the two spiral heads 27 rotate synchronously, and then the two spiral heads 27 engage and wind along the opening direction of the thread groove of the heat dissipation hole cover, ensuring the formation of the thread groove in the threaded hole of the heat dissipation hole cover; avoiding the problem that the heat generated by laser welding is transferred to the surface of the metal shell, causing the threaded holes on the metal shell and the heat dissipation hole cover to deform simultaneously, thereby improving the production quality of the metal shell and further improving the subsequent assembly of the metal shell with other components.

[0049] Refer to Figures 8 - 9 , specifically, the abutting assembly 3 includes an adjusting motor 31, an adjusting shaft 32 provided at the output end of the adjusting motor 31, a main hollow column 33 provided on the adjusting shaft 32, a sub-hollow column 34 provided in the main hollow column 33, and a roller 35 rotatably connected to one end of the sub-hollow column 34.

[0050] Among them, during the laser welding process of the metal housing and the heat dissipation hole cover, the welding head of the laser welding device welds along the path to be welded of the metal housing and the heat dissipation hole cover, and at the same time applies a downward pressure to the metal housing and the heat dissipation hole cover, so that the metal housing and the heat dissipation hole cover will tilt at an angle. Therefore, the adjusting motor 31 is activated, and its output end drives the adjusting shaft 32 to rotate, so that the main hollow column 33 and the sub-hollow column 34 rotate synchronously, so that the roller 35 approaches the side wall of the metal housing and supports the metal housing, thus ensuring the welding quality of the metal housing and the heat dissipation hole cover and further improving the welding efficiency.

[0051] Refer to Figures 1 - 3 , further, the flipping assembly 1 includes a support frame 11, a flipping motor 12 provided at the top of the support frame 11, flipping shafts 13 symmetrically arranged in the radial N direction above the support frame 11, a connecting frame 14 provided at one end of the flipping shaft 13, micro telescopic rods 15 uniformly arranged on the side wall of the connecting frame 14, and suction cups 16 provided at the telescopic ends of the micro telescopic rods 15; the output end of the flipping motor 12 is connected to one end of the flipping shaft 13 away from the connecting frame 14, and the other end of the flipping shaft 13 away from the connecting frame 14 is rotatably connected to the top of the support frame 11.

[0052] Among them, the corresponding micro telescopic rod 15 is activated, and its telescopic end pushes the suction cup 16 close to the side wall of the metal shell to adsorb and pick up the metal shell; in addition, the corresponding micro telescopic rod 15 is also activated, and its telescopic end pushes the suction cup 16 close to the side wall of the heat dissipation hole cover to adsorb and pick up the heat dissipation hole cover; thus, the problem that the clamping end of the manipulator will block the welding path between the metal shell and the heat dissipation hole cover is avoided, which is beneficial to the welding efficiency.

[0053] Immediately afterwards, the flipping motor 12 is activated to drive one of the flipping shafts 13 to rotate, so that the metal shell can be driven to rotate through the corresponding connecting frame 14, micro telescopic rod 15 and suction cup 16. At this time, since the welding joint between the metal shell and the heat dissipation hole cover has been closely attached and has been welded for a certain distance, the heat dissipation hole cover will also rotate synchronously when the metal shell rotates, so that the other flipping shaft 13 rotates accordingly, so that the welding head of the laser welding device can weld along the path to be welded between the metal shell and the heat dissipation hole cover.

[0054] It should be noted that since the volumes of the metal shell and the heat dissipation hole cover are quite different and the required number of suction cups 16 is also different, the corresponding micro telescopic rods 15 are actually activated according to the situation.

[0055] Refer to Figure 4 Furthermore, on the side of the flipping assembly 1 away from the abutting assembly 3, a robotic arm 4 is further provided. A welding torch 41 is provided at the execution end of the robotic arm 4, and a workbench 5 is provided at the bottom of the robotic arm 4; displacement motors 51 are symmetrically arranged in the radial N direction on the top of the workbench 5. A displacement shaft 52 is provided at the output end of the displacement motor 51. A displacement block 53 is provided on the displacement shaft 52. A displacement plate 54 is provided on the top of the displacement block 53. Telescopic plates 55 are symmetrically arranged in the radial N direction on the top of the displacement plate 54. An electric telescopic rod 56 is provided between the telescopic plates 55.

[0056] Among them, the robotic arm can rotate on the base to adjust the rotation angle. The robotic arm 4 can adjust the up and down position, and the welding torch 41 on the robotic arm 4 can rotate to achieve a better welding angle.

[0057] The displacement motor 51 is activated to drive the displacement shaft 52 to rotate, so that the displacement block 53 can slide along the distribution direction of the displacement shaft 52, and the displacement plate 54 moves synchronously, and then the rotating rod 26 and the spiral head 27 can be driven to move horizontally along the radial N direction; immediately afterwards, the electric telescopic rod 56 is activated to push the support plate 21 to move up and down, and the telescopic ends of the telescopic plates 55 also expand and contract accordingly, so that the rotating rod 26 and the spiral head 27 can be driven to move in the vertical direction; as the metal shell and the heat dissipation hole cover rotate, the positions of their threaded holes will also change, so that the rotating rod 26 and the spiral head 27 can always be aligned with the corresponding threaded holes.

[0058] Refer toFigure 4 Furthermore, the output end of the displacement motor 51 is connected to the displacement shaft 52 through a speed reducer. Both ends of the displacement shaft 52 are connected to the top of the workbench 5 through bearing seats. One end of the telescopic plate 55 away from the displacement plate 54 is connected to the bottom of the support plate 21, and the telescopic end of the electric telescopic rod 56 is connected to the bottom of the support plate 21.

[0059] Refer to Figure 4 Moreover, slide rails 57 are symmetrically arranged on both sides of the displacement shaft 52 in the radial N direction. Sliders 58 are slidably connected to the slide rails 57, and one side of the slider 58 away from the slide rail 57 is connected to the bottom of the displacement plate 54.

[0060] During the process of the displacement block 53 sliding along the distribution direction of the displacement shaft 52, the corresponding slider 58 will also be driven to slide on the corresponding slide rail 57, thereby achieving the purpose of guiding.

[0061] Refer to Figures 5 - 6 Further, the output end of the driving motor 22 passes through the top of the support plate 21 and is connected to the cam 23. A movable block 231 is arranged on the side wall of one end of the cam 23 away from the driving motor 22; the reciprocating plate 24 is T-shaped, and a movable groove 241 is formed in the top of the reciprocating plate 24 in the radial N direction. The movable block 231 can slide in the movable groove 241, and a reciprocating groove 211 is also formed in the top of the support plate 21. The reciprocating block 25 can slide in the reciprocating groove 211.

[0062] When the driving motor 22 is started, its output end drives the cam 23 to rotate, so that the movable block 231 can slide in the movable groove 241. At the same time, during the sliding process of the movable block 231, the reciprocating plate 24 will be pulled forward or backward to realize reciprocating motion; the reciprocating block 25 will also be pulled by the reciprocating plate 24 and slide in the reciprocating groove 211 to achieve the purpose of guiding.

[0063] Refer to Figures 5 - 6 Furthermore, the screw member 28 includes an extension frame 281, a guide rod 282 arranged on the top of the extension frame 281, a guide block 283 slidable on the guide rod 282, a rack 284 arranged on the top of the guide block 283, and a gear 285 meshing with the rack 284; one end of the extension frame 281 away from the guide rod 282 is connected to the side wall of one of the telescopic plates 55. The guide rod 282 is obliquely distributed, and the gear 285 can be sleeved on the rotating rod 26; a through groove 251 is also formed in the top of the reciprocating block 25, and one end of the rack 284 away from the guide block 283 can be slidably matched in the through groove 251.

[0064] Among them, during the forward sliding process of the reciprocating block 25, since a through groove 251 is also provided at the top of the reciprocating block 25, and one end of the rack 284 away from the guide block 283 can cooperate and slide in the through groove 251, the reciprocating block 25 will squeeze the rack 284, causing the rack 284 to slide in the through groove 251. At the same time, the rack 284 will also drive the guide block 283 to slide on the guide rod 282, making the guide block 283 gradually approach the reciprocating block 25; during this process, the rack 284 and the gear 285 are in meshing transmission, so the gear 285 will also be driven to rotate, thereby causing the rotating rod 26 to rotate synchronously, and the two spiral heads 27 will also rotate accordingly. When the rotating rod 26 moves forward, it can also rotate, so that the two spiral heads 27 rotate synchronously, and further make the two spiral heads 27 engage and wind along the opening direction of the thread groove of the metal shell, ensuring the formation of the thread groove in the threaded hole of the metal shell; avoiding the problem that the heat generated by laser welding will be transmitted to the surface of the metal shell, causing the threaded holes on the metal shell and the threaded holes on the heat dissipation hole cover to deform simultaneously, thereby improving the production quality of the metal shell, and further improving the subsequent assembly of the metal shell with other components.

[0065] Embodiment 2. Through the technical solution of Embodiment 1, although the problems that the clamping end of the manipulator in the current technology will block the welding path between the metal shell and the heat dissipation hole cover, and the heat generated by laser welding will be transmitted to the surface of the metal shell, causing the threaded holes on the metal shell and the threaded holes on the heat dissipation hole cover to deform simultaneously are solved. However, during the welding process, although the threaded holes of the metal shell and the heat dissipation hole cover are repaired simultaneously, it is not considered that during the repair process, due to thermal deformation, whether the centers of the two threaded holes are aligned. For this reason, the following solution is proposed:

[0066] Refer to Figure 7 Furthermore, a pin 261 is provided at one end of one rotating rod 26 away from the reciprocating block 25, and an auxiliary cylinder 262 is provided at one end of the other rotating rod 26 away from the reciprocating block 25. A slot 263 is provided at one end of the auxiliary cylinder 262, and the pin 261 can be inserted into the slot 263 in a matching manner.

[0067] Among them, one rotating rod 26 is screwed into the threaded hole of the metal shell through threads, and the other rotating rod 26 is screwed into the threaded hole of the heat dissipation hole cover through threads. During the process of the two rotating rods 26 rotating and approaching, the pin 261 will contact the auxiliary cylinder 262. Since the slot 263 is conical, the pin 261 will be tightly inserted into the auxiliary cylinder 262 along the inner wall of the slot 263, and at the same time, the purpose of aligning the centers of the two threaded holes is achieved through the two rotating rods 26.

[0068] Refer to Figures 8 - 9, Further, a fixing frame 59 is also provided on the top of the workbench 5. The output end of the adjusting motor 31 penetrates through the side wall of the fixing frame 59 and is connected to the adjusting shaft 32. A micro cylinder 331 is arranged inside the main hollow column 33. The telescopic end of the micro cylinder 331 is connected to one end of the auxiliary hollow column 34 away from the roller 35.

[0069] Among them, when the micro cylinder 331 is started, its telescopic end pushes the auxiliary hollow column 34 to extend, so that the roller 35 approaches the side wall of the metal shell, supports the metal shell, ensures the welding quality of the metal shell and the heat dissipation hole cover, and further improves the welding efficiency.

[0070] Embodiment 3, a laser welding method for manufacturing electric tool accessories, uses the laser welding device for manufacturing electric tool accessories as described above, and includes the following steps:

[0071] S1. During the laser welding process of the metal shell and the heat dissipation hole cover, the flipping assembly 1 is started to synchronously flip the metal shell and the heat dissipation hole cover, so that the welding head of the laser welding device can weld along the path to be welded of the metal shell and the heat dissipation hole cover.

[0072] S2. When the laser gradually approaches the threaded holes where the metal shell and the heat dissipation hole cover are aligned, the driving motor 22 is started, and its output end drives the cam 23 to rotate, so that the cam 23 pushes the reciprocating plate 24 to move forward. The reciprocating block 25 slides synchronously with the reciprocating plate 24. During this process, on the one hand, the rotating rod 26 will be driven by the reciprocating block 25 to move forward and enter the threaded hole of the metal shell, so that the threaded hole of the metal shell maintains its original diameter; on the other hand, when the reciprocating block 25 slides, it will also drive the spiral member 28 to start, so that while the rotating rod 26 moves forward, it can also rotate, so that the two spiral heads 27 rotate synchronously, and then the two spiral heads 27 engage and wind along the opening direction of the thread groove of the metal shell, ensuring the formation of the thread groove in the threaded hole of the metal shell.

[0073] S3. When the laser gradually approaches the threaded holes where the metal shell and the heat dissipation hole cover are aligned, another driving motor 22 will also be started. On the one hand, the rotating rod 26 will be driven by the reciprocating block 25 to move forward and enter the threaded hole of the heat dissipation hole cover, so that the threaded hole of the heat dissipation hole cover maintains its original diameter; on the other hand, when the reciprocating block 25 slides, it will also drive the spiral member 28 to start, so that while the rotating rod 26 moves forward, it can also rotate, so that the two spiral heads 27 rotate synchronously, and then the two spiral heads 27 engage and wind along the opening direction of the thread groove of the heat dissipation hole cover, ensuring the formation of the thread groove in the threaded hole of the heat dissipation hole cover.

[0074] S4. During the operation of S1, the welding head of the laser welding device welds along the path to be welded of the metal housing and the heat dissipation hole cover. At the same time, a downward pressure is applied to the metal housing and the heat dissipation hole cover, causing the metal housing and the heat dissipation hole cover to tilt at an angle. Therefore, the adjustment motor 31 starts, and its output drives the adjustment shaft 32 to rotate, causing the main hollow column 33 and the secondary hollow column 34 to rotate synchronously, so that the roller 35 approaches the side wall of the metal housing to support the metal housing.

[0075] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A laser welding device for the production of electric tool accessories, characterized in that: Including, a flipping component (1), with spiral fixing components (2) symmetrically arranged in the radial direction at both ends of the flipping component (1), and an abutting component (3) is further arranged on one side of the flipping component (1); The spiral fixing component (2) includes a support plate (21), a driving motor (22) arranged at one end of the bottom of the support plate (21), a cam (23) arranged at the output end of the driving motor (22), a reciprocating plate (24) arranged above the cam (23), a reciprocating block (25) arranged at one end of the reciprocating plate (24), a rotating rod (26) rotatably connected to the top of the reciprocating block (25), spiral heads (27) symmetrically arranged at opposite ends of the rotating rod (26), and a spiral member (28) arranged on the rotating rod (26); The abutting component (3) includes an adjusting motor (31), an adjusting shaft (32) arranged at the output end of the adjusting motor (31), a main hollow column (33) arranged on the adjusting shaft (32), a sub-hollow column (34) arranged inside the main hollow column (33), and a roller (35) rotatably connected to one end of the sub-hollow column (34); A pin (261) is arranged at one end of the rotating rod (26) away from the reciprocating block (25), and an auxiliary cylinder (262) is arranged at one end of the other rotating rod (26) away from the reciprocating block (25). A slot (263) is opened at one end of the auxiliary cylinder (262), and the pin (261) can be inserted into the slot (263) in a matching manner; One of the rotating rods (26) is rotated into the threaded hole of the metal shell through threads, and the other rotating rod (26) is rotated into the threaded hole of the heat dissipation hole cover through threads. During the process of the two rotating rods (26) rotating closer, the pin (261) will contact the auxiliary cylinder (262). Since the slot (263) is conical, the pin (261) will be tightly inserted into the auxiliary cylinder (262) along the inner wall of the slot (263), and at the same time, the purpose of aligning the centers of the two threaded holes is achieved through the two rotating rods (26); A robotic arm (4) is further arranged on one side of the flipping component (1) away from the abutting component (3). A welding torch (41) is arranged at the execution end of the robotic arm (4), and a workbench (5) is arranged at the bottom of the robotic arm (4); Displacement motors (51) are symmetrically arranged in the radial direction at the top of the workbench (5). A displacement shaft (52) is arranged at the output end of the displacement motor (51). A displacement block (53) is arranged on the displacement shaft (52). A displacement plate (54) is arranged at the top of the displacement block (53). Telescopic plates (55) are symmetrically arranged in the radial direction at the top of the displacement plate (54). An electric telescopic rod (56) is arranged between the telescopic plates (55); The spiral member (28) includes an extension frame (281), a guide rod (282) provided at the top of the extension frame (281), a guide block (283) slidably disposed on the guide rod (282), a rack (284) provided at the top of the guide block (283), and a gear (285) meshing with the rack (284) for transmission; One end of the extension frame (281) away from the guide rod (282) is connected to the side wall of one of the telescopic plates (55). The guide rod (282) is obliquely distributed, and the gear (285) can be sleeved on the rotating rod (26); A through groove (251) is further formed at the top of the reciprocating block (25), and one end of the rack (284) away from the guide block (283) can be slidably fitted in the through groove (251).

2. The laser welding device for the production of electric tool accessories according to claim 1, characterized in that: The flipping assembly (1) includes a support frame (11), a flipping motor (12) provided at the top of the support frame (11), a flipping shaft (13) symmetrically arranged in the radial direction above the support frame (11), a connecting frame (14) provided at one end of the flipping shaft (13), a plurality of micro telescopic rods (15) uniformly arranged on the side wall of the connecting frame (14), and a suction cup (16) provided at the telescopic end of the micro telescopic rod (15); The output end of the flipping motor (12) is connected to one end of the flipping shaft (13) away from the connecting frame (14), and the other end of the flipping shaft (13) away from the connecting frame (14) is rotatably connected to the top of the support frame (11).

3. The laser welding device for the production of electric tool accessories according to claim 1, characterized in that: The output end of the displacement motor (51) is connected to the displacement shaft (52) through a speed reducer. Both ends of the displacement shaft (52) are connected to the top of the workbench (5) through bearing seats. One end of the telescopic plate (55) away from the displacement plate (54) is connected to the bottom of the support plate (21), and the telescopic end of the electric telescopic rod (56) is connected to the bottom of the support plate (21).

4. The laser welding device for the production of electric tool accessories according to claim 3, wherein: On both sides in the radial direction of the displacement shaft (52), slide rails (57) are symmetrically arranged. A slider (58) is slidably connected to the slide rails (57), and one side of the slider (58) away from the slide rail (57) is connected to the bottom of the displacement plate (54).

5. The laser welding device for the production of electric tool accessories according to claim 1, characterized in that: The output end of the driving motor (22) penetrates through the top of the support plate (21) and is connected to a cam (23). A movable block (231) is provided on the side wall of one end of the cam (23) away from the driving motor (22); The reciprocating plate (24) is in a T shape. An activity groove (241) is formed in the radial direction at the top of the reciprocating plate (24). The movable block (231) can slide in the activity groove (241). A reciprocating groove (211) is further formed at the top of the support plate (21), and the reciprocating block (25) can slide in the reciprocating groove (211).

6. The laser welding device for the production of electric tool accessories according to claim 1, characterized in that: A fixing frame (59) is further arranged on the top of the workbench (5). The output end of the adjusting motor (31) penetrates through the side wall of the fixing frame (59) and is connected to the adjusting shaft (32). A micro cylinder (331) is arranged inside the main hollow column (33). The telescopic end of the micro cylinder (331) is connected to one end of the auxiliary hollow column (34) away from the roller (35).

7. A laser welding method for the production of electric tool accessories, using the laser welding device for the production of electric tool accessories as described in any one of claims 1-6, characterized in that, It includes the following steps: S1. During the laser welding process of the metal shell and the heat dissipation hole cover, the flipping assembly (1) is started to flip the metal shell and the heat dissipation hole cover synchronously, so that the welding head of the laser welding device can weld along the welding path of the metal shell and the heat dissipation hole cover to be welded; S2. When the laser gradually approaches the threaded holes where the metal shell and the heat dissipation hole cover are aligned, the driving motor (22) is started, and its output end drives the cam (23) to rotate, so that the cam (23) pushes the reciprocating plate (24) to move forward. The reciprocating block (25) slides synchronously with the reciprocating plate (24). During this process, on the one hand, the rotating rod (26) will be driven by the reciprocating block (25) to move forward and enter the threaded hole of the metal shell, so that the threaded hole of the metal shell maintains its original diameter; on the other hand, when the reciprocating block (25) slides, it will also drive the spiral part (28) to start, so that while the rotating rod (26) moves forward, it can also rotate, so that the two spiral heads (27) rotate synchronously, and then the two spiral heads (27) engage and wind along the opening direction of the thread groove of the metal shell, ensuring the formation of the thread groove in the threaded hole of the metal shell; S3. When the laser gradually approaches the threaded holes where the metal shell and the heat dissipation hole cover are aligned, another driving motor (22) will also be started. On the one hand, the rotating rod (26) will be driven by the reciprocating block (25) to move forward and enter the threaded hole of the heat dissipation hole cover, so that the threaded hole of the heat dissipation hole cover maintains its original diameter; on the other hand, when the reciprocating block (25) slides, it will also drive the spiral part (28) to start, so that while the rotating rod (26) moves forward, it can also rotate, so that the two spiral heads (27) rotate synchronously, and then the two spiral heads (27) engage and wind along the opening direction of the thread groove of the heat dissipation hole cover, ensuring the formation of the thread groove in the threaded hole of the heat dissipation hole cover; S4. During the operation of S1, the welding head of the laser welding device welds along the welding path of the metal shell and the heat dissipation hole cover, and at the same time, a downward pressure is applied to the metal shell and the heat dissipation hole cover, so that the metal shell and the heat dissipation hole cover will be inclined at an angle. Therefore, the adjusting motor (31) is started, and its output end drives the adjusting shaft (32) to rotate, so that the main hollow column (33) and the auxiliary hollow column (34) rotate synchronously, so that the roller (35) approaches the side wall of the metal shell to support the metal shell.

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