Laser welding device for electric tool accessory production and working method thereof

Abstract

The invention is suitable for the technical field of laser welding of electric tool accessories, and provides a laser welding device for production of electric tool accessories and a working method of the laser welding device. The spiral fixing assembly comprises a supporting plate, a driving motor, a cam, a reciprocating plate, a reciprocating block, a rotating rod, a spiral head and a spiral piece. The abutting assembly comprises an adjusting motor, an adjusting shaft, a main hollow column, an auxiliary hollow column and a rolling wheel. The spiral head is meshed and wound along the forming direction of the threaded holes and the threaded grooves in the metal shell and the heat dissipation hole cover, so that the forming of the threaded grooves in the threaded holes of the metal shell and the heat dissipation hole cover is ensured; the problem that heat generated by laser welding can be transmitted to the surface of the metal shell, so that threaded holes in the metal shell and threaded holes in the heat dissipation hole cover deform in pairs is solved, the production quality of the metal shell is improved, and subsequent assembly of the metal shell and other parts is improved.

Description

Technical Field

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

[0002] Power tools are tools that are powered by electric motors or batteries and use a transmission mechanism to drive the working head to perform operations; they are widely used in construction, decoration, mechanical processing, auto repair, home renovation and other fields; and power tool accessories refer to the various components or accessories used in power tools, which work together to ensure the normal operation and efficient performance of power tools.

[0003] Among them, the metal casing is also one of the accessories of power tools. During production, the metal casing needs to be fixed to other parts through laser welding, so as to provide high-precision and high-strength connections, ensuring that the metal casing is not easy to age or break during long-term use; however, power tools will generate heat during use, and the accumulated heat will affect the service life of the metal casing. Therefore, it is necessary to open holes in the metal casing for heat dissipation, and weld heat dissipation hole covers on the basis of the holes to prevent dust from entering.

[0004] In the prior art, a robot is generally used to clamp and fix the metal shell and the heat dissipation hole cover before welding. However, due to the small size of the heat dissipation hole cover, when the heat dissipation hole cover is welded to the surface of the metal shell, the clamping end of the robot 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 the metal shell and the heat dissipation hole cover. The threaded holes are not only the key parts for connecting other components with the metal shell, but also the factors for strengthening the connection 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 both the threaded holes on the metal shell and the threaded holes on the heat dissipation hole cover to be deformed, 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 for the production of electric tool accessories and a working method thereof are proposed to improve the existing problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a laser welding device and a working method thereof for producing electric tool accessories.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser welding device for producing electric tool accessories, comprising a flipping assembly, a spiral fixing assembly and an abutment assembly; wherein, the flipping assembly, the spiral fixing assemblies are symmetrically arranged at both ends of the flipping assembly in the radial direction, and an abutment assembly is also arranged on one side of the flipping assembly; the spiral fixing assembly comprises 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, a spiral head symmetrically arranged at one end of the rotating rod, and a spiral member arranged on the rotating rod; the abutment assembly comprises 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 secondary hollow column arranged in the main hollow column, and a roller rotatably connected to one end of the secondary hollow column.

[0008] The present invention is further configured as follows: the flip assembly includes a support frame, a flip motor arranged on the top of the support frame, a flip shaft symmetrically arranged above the support frame in the radial direction, a connecting frame arranged at one end of the flip shaft, micro-telescopic rods evenly arranged on the side walls of the connecting frame, and a suction cup arranged at the telescopic end of the micro-telescopic rod; the output end of the flip motor is connected to one end of the flip shaft away from the connecting frame, and the other end of the flip shaft away from the connecting frame is rotatably connected to the top of the support frame.

[0009] The present invention is further configured as follows: a mechanical arm is also arranged on the side of the flip assembly away from the abutting assembly, a welding gun is arranged at the execution end of the mechanical arm, and a workbench is arranged at the bottom of the mechanical arm; a displacement motor is symmetrically arranged in the radial direction of the top of the workbench, a displacement shaft is arranged at the output end of the displacement motor, a displacement block is arranged on the displacement shaft, a displacement plate is arranged on the top of the displacement block, telescopic plates are symmetrically arranged in the radial direction of the top of the displacement plate, and an electric telescopic rod is arranged between the telescopic plates.

[0010] The present invention is further configured as follows: the output end of the displacement motor is connected to the displacement shaft through a reducer, both ends of the displacement shaft are connected to the top of the workbench through bearing seats, the end of the telescopic plate away from the displacement plate is 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 configured as follows: slide rails are symmetrically arranged in radial directions on both sides of the displacement axis, a slider is slidably connected to the slide rails, and a side of the slider away from the slide rails is connected to the bottom of the displacement plate.

[0012] The present invention is further configured as follows: the output end of the driving motor passes through the top of the supporting plate and is connected to the cam, and a movable block is provided on the side wall of the cam at one end away from the driving motor; the reciprocating plate is T-shaped, and a movable groove is provided in the radial direction of the top of the reciprocating plate, and the movable block can slide in the movable groove; a reciprocating groove is also provided on the top of the supporting plate, and the reciprocating block can slide in the reciprocating groove.

[0013] The present invention is further configured as follows: the spiral member includes an extension frame, a guide rod arranged on the top of the extension frame, a guide block sliding on the guide rod, a rack arranged on the top of the guide block, and a gear meshing with the rack for transmission; 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 inclined, and the gear can be sleeved on the rotating rod; a through groove is also provided on the top of the reciprocating block, and the end of the rack away from the guide block can cooperate and slide in the through groove.

[0014] The present invention is further configured as follows: a latch is provided at one end of one of the rotating rods away from the reciprocating block, and an auxiliary tube is provided at the other end of the rotating rod away from the reciprocating block, one end of the auxiliary tube is provided with a slot, and the latch can be inserted into the slot.

[0015] The present invention is further configured as follows: a fixing frame is also provided on the top of the workbench, the output end of the adjusting motor passes through the side wall of the fixing frame and is connected to the adjusting shaft, a micro cylinder is provided in the main hollow column, and the telescopic end of the micro cylinder is connected to the end of the auxiliary hollow column away from the roller.

[0016] A laser welding method for producing electric tool accessories, using the laser welding device for producing electric tool accessories as described above, comprises the following steps: S1. During the laser welding process of the metal shell and the heat dissipation hole cover, the flip assembly 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 perform welding along the path of the metal shell and the heat dissipation hole cover to be welded; S2. When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, the drive motor starts, and its output end drives the cam to rotate, so that the cam pushes the reciprocating plate to move forward, and the reciprocating block slides synchronously with the reciprocating plate. During this process, on the one hand, the rotating rod will be moved forward by the reciprocating block 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, the reciprocating block will also drive the spiral member to start when it slides, so that the rotating rod can rotate while moving forward, so that the two spiral heads rotate synchronously, and then the two spiral heads mesh and rotate 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 of the metal shell and the heat dissipation hole cover that are aligned with each other, another driving motor will also start. On the one hand, the rotating rod will be moved forward by the reciprocating block and enter the threaded hole of the heat dissipation hole cover, so that the threaded hole of the heat dissipation hole cover maintains the original diameter size; on the other hand, the reciprocating block will also drive the spiral member to start when sliding, so that the rotating rod can rotate while moving forward, so that the two spiral heads rotate synchronously, and then the two spiral heads mesh and rotate along the opening direction of the thread groove of the heat dissipation hole cover, ensuring the forming of the thread groove in the threaded hole of the heat dissipation hole cover; S4. During the working process of S1, the welding head of the laser welding device welds along the path of the metal shell and the heat dissipation hole cover to be welded, and also applies a downward pressure to the metal shell and the heat dissipation hole cover, so that the metal shell and the heat dissipation hole cover will be tilted at an angle. Therefore, the adjustment motor is started, and its output end drives the adjustment shaft to rotate, so that the main hollow column and the auxiliary hollow column rotate synchronously, so that the roller is close to the side wall of the metal shell to support the metal shell.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: (1) The motor is started by driving the cam, and its output end drives the cam to rotate, so that the cam pushes the reciprocating plate to move forward. The reciprocating block slides synchronously with the reciprocating plate. During this process, the rotating rod will be moved forward by the reciprocating block and enter the threaded hole of the metal shell, so that the threaded hole of the metal shell maintains its original diameter.

[0018] (2) The reciprocating block slides to drive the screw to start, so that the rotating rod can move forward and rotate at the same time, so that the two screw heads rotate synchronously, and then the two screw heads mesh and rotate 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 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, thereby improving the production quality of the metal shell, and then improving the subsequent assembly of the metal shell and other components.

[0019] (3) By starting the adjusting motor, its output end drives the adjusting shaft to rotate, so that the main hollow column and the auxiliary hollow column rotate synchronously, so that the roller is close to the side wall of the metal shell and supports the metal shell, thereby ensuring the welding quality of the metal shell and the heat dissipation hole cover, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the laser welding device for producing electric tool accessories of the present invention.

[0021] Figure 2It is a schematic diagram of the overall structure of the flip assembly in the present invention.

[0022] Figure 3 for Figure 2 Enlarged image of .

[0023] Figure 4 It is a structural schematic diagram of the top of the workbench in the present invention.

[0024] Figure 5 It is a schematic diagram of the overall structure of the spiral fixing assembly in the present invention.

[0025] Figure 6 It is a schematic diagram of the overall structure of the reciprocating block and the through slot in the present invention.

[0026] Figure 7 It is a cross-sectional view of the auxiliary cylinder and the slot in the present invention.

[0027] Figure 8 It is a schematic diagram of the overall structure of the abutment assembly in the present invention.

[0028] Fig. 9 It is an exploded view of the abutment assembly in the present invention.

[0029] Description of reference numerals: 1. flip assembly; 11. support frame; 12. flip motor; 13. flip shaft; 14. connecting frame; 15. micro telescopic rod; 16. suction cup; 2. Screw 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. Latch; 262. Auxiliary cylinder; 263. Slot; 27. Screw head; 28. Screw piece; 281. Extension frame; 282. Guide rod; 283. Guide block; 284. Rack; 285. Gear; 3. abutment assembly; 31. adjustment motor; 32. adjustment shaft; 33. main hollow column; 331. micro cylinder; 34. auxiliary hollow column; 35. roller; 4. Robotic arm; 41. Welding gun; 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. Sliding block; 59. Fixed bracket. DETAILED DESCRIPTION

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] See also Figure 1-Figure 9, the present invention provides the following technical solutions: Example 1, see Figure 1-Figure 9 A laser welding device for producing electric tool accessories includes a flipping component 1, a spiral fixing component 2 and an abutting component 3; wherein the flipping component 1 is used to flip the metal shell and the heat dissipation hole cover synchronously, so that the welding head of the laser welding device can perform welding along the path of the metal shell and the heat dissipation hole cover to be welded.

[0032] The function of the spiral fixing component 2 is that on the one hand, it can enter the threaded holes of the metal shell and the heat dissipation hole cover at the same time, so that the threaded holes of the metal shell and the heat dissipation hole cover maintain their original diameters; on the other hand, it can also enable the spiral head 27 to engage and rotate along the opening direction of the threaded grooves of the threaded holes in the metal shell and the heat dissipation hole cover, thereby ensuring the molding of the threaded grooves in the threaded holes of the metal shell and the heat dissipation hole cover; it avoids the problem that 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 be deformed, thereby improving the production quality of the metal shell, and then improving the subsequent assembly of the metal shell and other components.

[0033] The welding head of the laser welding device performs welding along the path where the metal shell and the heat dissipation hole cover are to be welded, and also applies a downward pressure to the metal shell and the heat dissipation hole cover, so that the metal shell and the heat dissipation hole cover are tilted at an angle. Therefore, the function of the abutment component 3 is to support the side wall of the metal shell, thereby ensuring the welding quality of the metal shell and the heat dissipation hole cover, and then improving the welding efficiency.

[0034] See also Figure 1-Figure 3 Specifically, the flip component 1 has spiral fixing components 2 symmetrically arranged at both ends of the flip component 1 in the radial N direction, and an abutting component 3 is also arranged on one side of the flip component 1; the number of the spiral fixing components 2 is two.

[0035] During the laser welding process of the metal shell and the heat dissipation hole cover, the flipping component 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 perform welding along the path of the metal shell and the heat dissipation hole cover to be welded.

[0036] See also Figure 4-Figure 7 Specifically, the spiral fixing assembly 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, a spiral head 27 symmetrically arranged at one end of the rotating rod 26, and a spiral member 28 arranged on the rotating rod 26.

[0037] Among them, when the laser gradually approaches the threaded holes aligned with each other in the metal shell and the heat dissipation hole cover, 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, and the reciprocating block 25 slides synchronously with the reciprocating plate 24. In this process, on the one hand, the rotating rod 26 will be moved forward by the reciprocating block 25 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 the rotating rod 26 can rotate while moving forward, so that the two spiral heads 27 can rotate synchronously, and then the two spiral heads 27 can mesh and rotate along the opening direction of the metal shell thread groove, thereby ensuring the forming of the thread groove in the threaded hole of the metal shell; avoiding the problem that 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 threaded holes on the heat dissipation hole cover to be deformed, thereby improving the production quality of the metal shell, and then improving the subsequent assembly of the metal shell and other components.

[0038] When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, another driving motor 22 will also start. On the one hand, the rotating rod 26 will be moved 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, the reciprocating block 25 will also drive the screw 28 to start when it slides, so that the rotating rod 26 can rotate while moving forward, so that the two screw heads 27 can rotate synchronously, and then the two screw heads 27 can mesh and rotate along the opening direction of the threaded groove of the heat dissipation hole cover, thereby ensuring the formation of the threaded groove in the threaded hole of the heat dissipation hole cover; avoiding the problem that 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 threaded holes on the heat dissipation hole cover to be deformed, thereby improving the production quality of the metal shell, and then improving the subsequent assembly of the metal shell and other components.

[0039] See also Figure 8-Figure 9 Specifically, the abutment assembly 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 secondary hollow column 34 arranged in the main hollow column 33, and a roller 35 rotatably connected to one end of the secondary hollow column 34.

[0040] Among them, during the laser welding process of the metal shell and the heat dissipation hole cover, the welding head of the laser welding device welds along the path of the metal shell and the heat dissipation hole cover to be welded, and also applies a downward pressure to the metal shell and the heat dissipation hole cover, so that the metal shell and the heat dissipation hole cover will be tilted at an angle, so the adjustment motor 31 is started, and its output end drives the adjustment shaft 32 to rotate, so that the main hollow column 33 and the auxiliary hollow column 34 rotate synchronously, so that the roller 35 is close to the side wall of the metal shell to support the metal shell, thereby ensuring the welding quality of the metal shell and the heat dissipation hole cover, and then improving the welding efficiency.

[0041] See also Figure 1-Figure 3 Furthermore, the flip assembly 1 includes a support frame 11, a flip motor 12 arranged on the top of the support frame 11, a flip shaft 13 symmetrically arranged above the support frame 11 in the radial N direction, a connecting frame 14 arranged at one end of the flip shaft 13, a micro telescopic rod 15 evenly arranged on the side wall of the connecting frame 14, and a suction cup 16 arranged at the telescopic end of the micro telescopic rod 15; the output end of the flip motor 12 is connected to one end of one of the flip shafts 13 away from the connecting frame 14, and the other end of the flip shaft 13 away from the connecting frame 14 is rotatably connected to the top of the support frame 11.

[0042] Among them, the corresponding micro telescopic rod 15 is started, and its telescopic end pushes the suction cup 16 close to the side wall of the metal shell, and the metal shell is adsorbed and picked up; in addition, the corresponding micro telescopic rod 15 is also started, and its telescopic end pushes the suction cup 16 close to the side wall of the heat dissipation hole cover, and the heat dissipation hole cover is adsorbed and picked up; thereby avoiding the problem that the clamping end of the manipulator will block the welding path between the metal shell and the heat dissipation hole cover, which is beneficial to welding efficiency.

[0043] Next, the flip motor 12 is started, driving one of the flip shafts 13 to rotate, thereby driving the metal shell to rotate through the corresponding connecting frame 14, the micro telescopic rod 15 and the suction cup 16. At this time, since the welding point between the metal shell and the heat dissipation hole cover is already tightly fitted and has been welded for a certain distance, the rotation of the metal shell will also drive the heat dissipation hole cover to rotate synchronously, thereby causing the other flip shaft 13 to rotate accordingly, so that the welding head of the laser welding device can perform welding along the path to be welded between the metal shell and the heat dissipation hole cover.

[0044] It should be noted that, due to the large difference in volume between the metal shell and the heat dissipation hole cover, the required number of suction cups 16 is also different, so the corresponding micro telescopic rod 15 is also started according to actual conditions.

[0045] See also Figure 4Furthermore, a robotic arm 4 is provided on the side of the flip component 1 away from the abutting component 3, a welding gun 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; a displacement motor 51 is symmetrically provided 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, and a telescopic plate 55 is symmetrically provided in the radial N direction on the top of the displacement plate 54, and an electric telescopic rod 56 is provided between the telescopic plates 55.

[0046] Among them, the mechanical arm can rotate on the base to adjust the rotation angle, the mechanical arm 4 can adjust the up and down position, and the welding gun 41 on the mechanical arm 4 can rotate to achieve a better welding angle.

[0047] The displacement motor 51 is started, driving 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 is displaced synchronously, thereby driving the rotating rod 26 and the spiral head 27 to move horizontally along the radial direction N; then the electric telescopic rod 56 is started, pushing the support plate 21 to perform lifting and lowering movements, and the telescopic end of the telescopic plate 55 is also telescoped accordingly, thereby driving the rotating rod 26 and the spiral head 27 to move in the vertical direction; as the metal shell and the heat dissipation hole cover rotate, the position of the threaded hole thereof will also change, so that the rotating rod 26 and the spiral head 27 can always be aligned with the corresponding threaded hole.

[0048] See also Figure 4 Furthermore, the output end of the displacement motor 51 is connected to the displacement shaft 52 through a reducer, both ends of the displacement shaft 52 are connected to the top of the workbench 5 through bearing seats, the 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.

[0049] See also Figure 4 Furthermore, slide rails 57 are symmetrically arranged on both sides of the displacement shaft 52 in the radial direction N, and a slider 58 is slidably connected to the slide rail 57. The side of the slider 58 away from the slide rail 57 is connected to the bottom of the displacement plate 54.

[0050] In the process of the displacement block 53 sliding along the distribution direction of the displacement axis 52, the corresponding sliding block 58 will also be driven to slide on the corresponding sliding rail 57, thereby achieving the purpose of guidance.

[0051] See also Figure 5-Figure 6Furthermore, the output end of the driving motor 22 passes through the top of the supporting plate 21 and is connected to the cam 23. A movable block 231 is provided on the side wall of the cam 23 at one end away from the driving motor 22. The reciprocating plate 24 is T-shaped. A movable groove 241 is provided on the top of the reciprocating plate 24 in the radial N direction. The movable block 231 can slide in the movable groove 241. A reciprocating groove 211 is also provided on the top of the supporting plate 21. The reciprocating block 25 can slide in the reciprocating groove 211.

[0052] Among them, the driving motor 22 is started, and 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, the movable block 231 will also pull the reciprocating plate 24 to move forward or backward during the sliding process to achieve reciprocating motion; the reciprocating block 25 will also slide in the reciprocating groove 211 under the pull of the reciprocating plate 24 to achieve the guiding purpose.

[0053] See also Figure 5-Figure 6 Furthermore, the spiral member 28 includes an extension frame 281, a guide rod 282 arranged at the top of the extension frame 281, a guide block 283 sliding on the guide rod 282, a rack 284 arranged 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 inclined, and the gear 285 can be sleeved on the rotating rod 26; a through groove 251 is also opened at the top of the reciprocating block 25, and the end of the rack 284 away from the guide block 283 can cooperate and slide in the through groove 251.

[0054] In the process of the reciprocating block 25 sliding forward, since a through groove 251 is also provided on the top of the reciprocating block 25, the end of the rack 284 away from the guide block 283 can slide in the through groove 251, so the reciprocating block 25 will squeeze the rack 284, so that the rack 284 slides in the through groove 251, and at the same time, the rack 284 will also drive the guide block 283 to slide on the guide rod 282, so that the guide block 283 gradually approaches the reciprocating block 25; in this process, the rack 284 and the gear 285 are meshing transmission, so it will also drive the gear 285 to rotate, so that the rotating rod 26 is simultaneously The two screw heads 27 also rotate accordingly, so that the rotating rod 26 can rotate while moving forward, so that the two screw heads 27 rotate synchronously, and then the two screw heads 27 mesh and rotate along the opening direction of the metal shell thread groove, thereby ensuring the molding of the thread groove in the threaded hole of the metal shell; avoiding the problem that 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 threaded holes on the heat dissipation hole cover to be deformed, thereby improving the production quality of the metal shell, and then improving the subsequent assembly of the metal shell and other components.

[0055] Embodiment 2: The technical solution of embodiment 1 solves the problem that the clamping end of the manipulator blocks the welding path between the metal shell and the heat dissipation hole cover, and the heat generated by the laser welding is transferred to the surface of the metal shell, causing both the threaded holes on the metal shell and the heat dissipation hole cover to be deformed. However, during the welding process, although both the threaded holes of the metal shell and the threaded holes of the heat dissipation hole cover are repaired, it is not considered whether the two threaded holes are aligned in the center due to thermal deformation during the repair process. Therefore, the following solution is proposed: See also Figure 7 Furthermore, a latch 261 is provided at one end of one rotating rod 26 away from the reciprocating block 25, and an auxiliary tube 262 is provided at another end of the rotating rod 26 away from the reciprocating block 25. A slot 263 is provided at one end of the auxiliary tube 262, and the latch 261 can be inserted into the slot 263.

[0056] Among them, one of the rotating rods 26 is threadedly rotated into the threaded hole of the metal shell, and the other rotating rod 26 is threadedly rotated into the threaded hole of the heat dissipation hole cover. When the two rotating rods 26 rotate close to each other, the pin 261 will contact the auxiliary tube 262. Since the slot 263 is conical, the pin 261 will be tightly plugged into the auxiliary tube 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.

[0057] See also Figure 8-Figure 9 Furthermore, a fixing frame 59 is provided on the top of the workbench 5, and the output end of the adjusting motor 31 passes through the side wall of the fixing frame 59 and is connected to the adjusting shaft 32. A micro cylinder 331 is provided in the main hollow column 33, and the telescopic end of the micro cylinder 331 is connected to one end of the auxiliary hollow column 34 away from the roller 35.

[0058] Among them, the micro cylinder 331 is started, and its telescopic end pushes the auxiliary hollow column 34 to extend, so that the roller 35 is close to the side wall of the metal shell to support the metal shell, thereby ensuring the welding quality of the metal shell and the heat dissipation hole cover, and further improving the welding efficiency.

[0059] Embodiment 3, a laser welding method for producing electric tool accessories, using the laser welding device for producing electric tool accessories as described above, comprises the following steps: S1. During the laser welding process of the metal shell and the heat dissipation hole cover, the flip 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 perform welding along the path of the metal shell and the heat dissipation hole cover to be welded.

[0060] S2. When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, the drive motor 22 starts, and its output end drives the cam 23 to rotate, so that the cam 23 pushes the reciprocating plate 24 to move forward, and the reciprocating block 25 slides synchronously with the reciprocating plate 24. During this process, on the one hand, the rotating rod 26 will be moved forward by the reciprocating block 25 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 the rotating rod 26 can rotate while moving forward, so that the two spiral heads 27 can rotate synchronously, and then the two spiral heads 27 can mesh and rotate along the opening direction of the thread groove of the metal shell, thereby ensuring the forming of the thread groove in the threaded hole of the metal shell.

[0061] S3. When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, another driving motor 22 will also start. On the one hand, the rotating rod 26 will be moved 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, the reciprocating block 25 will also drive the screw member 28 to start when it slides, so that the rotating rod 26 can rotate while moving forward, so that the two screw heads 27 can rotate synchronously, and then the two screw heads 27 can mesh and rotate along the opening direction of the thread groove of the heat dissipation hole cover, thereby ensuring the forming of the thread groove in the threaded hole of the heat dissipation hole cover.

[0062] S4. During the working process of S1, 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, 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 are tilted at an angle. Therefore, the adjustment motor 31 is started, and its output end drives the adjustment shaft 32 to rotate, so that the main hollow column 33 and the auxiliary hollow column 34 rotate synchronously, so that the roller 35 is close to the side wall of the metal shell to support the metal shell.

[0063] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A laser welding device for producing electric tool accessories, characterized in that: include, A turnover assembly (1), wherein spiral fixing assemblies (2) are symmetrically arranged at both ends of the turnover assembly (1) in a radial direction, and an abutment assembly (3) is also arranged on one side of the turnover assembly (1); The spiral fixing assembly (2) comprises 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), a spiral head (27) symmetrically arranged at one end of the rotating rod (26), and a spiral member (28) arranged on the rotating rod (26); The abutment assembly (3) comprises an adjustment motor (31), an adjustment shaft (32) arranged at the output end of the adjustment motor (31), a main hollow column (33) arranged on the adjustment shaft (32), a secondary hollow column (34) arranged in the main hollow column (33), and a roller (35) rotatably connected to one end of the secondary hollow column (34).

2. The laser welding device for producing electric tool accessories according to claim 1, characterized in that: The flip assembly (1) comprises a support frame (11), a flip motor (12) arranged on the top of the support frame (11), a flip shaft (13) symmetrically arranged above the support frame (11) in a radial direction, a connecting frame (14) arranged at one end of the flip shaft (13), micro telescopic rods (15) evenly arranged on the side wall of the connecting frame (14), and a suction cup (16) arranged at the telescopic end of the micro telescopic rod (15); The output end of the flip motor (12) is connected to one end of the flip shaft (13) away from the connecting frame (14), and the other end of the flip 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 producing electric tool accessories according to claim 1, characterized in that: A mechanical arm (4) is further provided on a side of the flip assembly (1) away from the abutment assembly (3); a welding gun (41) is provided at an execution end of the mechanical arm (4); and a workbench (5) is provided at the bottom of the mechanical arm (4); A displacement motor (51) is symmetrically arranged in a radial direction on 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 on the top of the displacement block (53); telescopic plates (55) are symmetrically arranged in a radial direction on the top of the displacement plate (54); and electric telescopic rods (56) are arranged between the telescopic plates (55).

4. The laser welding device for producing electric tool accessories according to claim 3, characterized in that: The output end of the displacement motor (51) is connected to the displacement shaft (52) via a speed reducer; both ends of the displacement shaft (52) are connected to the top of the workbench (5) via 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).

5. The laser welding device for producing electric tool accessories according to claim 4, characterized in that: Slide rails (57) are symmetrically arranged in radial directions on both sides of the displacement shaft (52), and a slider (58) is slidably connected to the slide rail (57), and a side of the slider (58) away from the slide rail (57) is connected to the bottom of the displacement plate (54).

6. The laser welding device for producing electric tool accessories according to claim 1, characterized in that: The output end of the driving motor (22) passes through the top of the supporting plate (21) and is connected to the cam (23); a movable block (231) is provided on a side wall of one end of the cam (23) away from the driving motor (22); The reciprocating plate (24) is T-shaped, a movable groove (241) is provided in a radial direction at the top of the reciprocating plate (24), the movable block (231) can slide in the movable groove (241), and a reciprocating groove (211) is also provided at the top of the support plate (21), the reciprocating block (25) can slide in the reciprocating groove (211).

7. The laser welding device for producing electric tool accessories according to claim 3, characterized in that: The spiral member (28) comprises an extension frame (281), a guide rod (282) arranged on the top of the extension frame (281), a guide block (283) sliding 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) for transmission; One end of the extension frame (281) away from the guide rod (282) is connected to a side wall of one of the telescopic plates (55); the guide rod (282) is inclined; and the gear (285) can be sleeved on the rotating rod (26); A through slot (251) is also provided on the top of the reciprocating block (25), and one end of the rack (284) away from the guide block (283) can slide in the through slot (251).

8. The laser welding device for producing electric tool accessories according to claim 1, characterized in that: A latch pin (261) is disposed at one end of one of the rotating rods (26) away from the reciprocating block (25), and an auxiliary tube (262) is disposed 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 tube (262), and the latch pin (261) can be inserted into the slot (263).

9. The laser welding device for producing electric tool accessories according to claim 3, characterized in that: A fixing frame (59) is also provided on the top of the workbench (5), and an output end of the adjusting motor (31) passes through a side wall of the fixing frame (59) and is connected to the adjusting shaft (32). A micro cylinder (331) is provided in the main hollow column (33), and a telescopic end of the micro cylinder (331) is connected to an end of the auxiliary hollow column (34) away from the roller (35).

10. A laser welding method for producing electric tool accessories, using the laser welding device for producing electric tool accessories as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: 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 perform welding along the path of the metal shell and the heat dissipation hole cover to be welded; S2. When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, the drive 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, and the reciprocating block (25) slides synchronously with the reciprocating plate (24). During this process, on the one hand, the rotating rod (26) is moved forward by the reciprocating block (25) and enters 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 also drives the spiral member (28) to start, so that the rotating rod (26) can rotate while moving forward, so that the two spiral heads (27) can rotate synchronously, and then the two spiral heads (27) can mesh and rotate along the opening direction of the thread groove of the metal shell, thereby ensuring the formation of the thread groove in the threaded hole of the metal shell; S3. When the laser gradually approaches the threaded holes of the metal shell and the heat dissipation hole cover that are aligned with each other, another driving motor (22) is also started. On the one hand, the rotating rod (26) is moved forward by the reciprocating block (25) and enters 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 also drives the spiral member (28) to start, so that the rotating rod (26) can rotate while moving forward, so that the two spiral heads (27) rotate synchronously, and then the two spiral heads (27) are meshed and rotated along the opening direction of the threaded groove of the heat dissipation hole cover, thereby ensuring the formation of the threaded groove in the threaded hole of the heat dissipation hole cover. S4. During the working process of S1, the welding head of the laser welding device welds along the path of the metal shell and the heat dissipation hole cover to be welded, 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 are tilted at an angle, so that the adjustment motor (31) is started, and its output end drives the adjustment shaft (32) to rotate, so that the main hollow column (33) and the auxiliary hollow column (34) rotate synchronously, so that the roller (35) is close to the side wall of the metal shell to support the metal shell.

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