A portable laser welding device

Abstract

This utility model discloses a movable laser welding device, relating to the technical field of laser welding. It includes a base, a spur gear, and a motor. A sliding groove is symmetrically arranged above the base, and the bottom of a laser generator is positioned directly above the sliding groove. A displacement mechanism is located below the base, controlling the range of motion of the base and the laser generator. This allows for adjustment of the laser generator's processing range according to the workpiece specifications. A cooling mechanism is installed inside the base to provide auxiliary air cooling for the welded areas, thereby shortening the cooling time of the welded parts. The displacement speed of the laser welding machine is adjusted by controlling the bevel gear ratio. When the motor drives one side of the bevel gear to rotate, the bevel gear drives another side of the bevel gear and gear to rotate, and the rotation speed of the gear is controlled.

Description

Technical Field

[0001] This utility model relates to the technical field of laser welding, and specifically to a portable laser welding device. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is mainly used for welding thin-walled materials and low-speed welding. Currently, more and more automobile manufacturers are using laser welding to assemble vehicle bodies. One existing laser welding device has a fixed arc mirror structure, which can only provide a laser beam of a certain intensity during use.

[0003] Currently available laser welding machines are bulky and difficult to move, and can only weld parts in a fixed position. Furthermore, the displacement and welding speed of the welding machine will affect the welding quality of the workpiece. For example, if the speed is too low, the workpiece molten pool will overheat, resulting in burn-through and deformation (especially thin plates). If the speed is too high, the workpiece will not have sufficient penetration and the weld will not be fully fused. Summary of the Invention

[0004] The purpose of this invention is to provide a portable laser welding device to solve the aforementioned defects caused by the prior art.

[0005] A movable laser welding device includes a base, a spur toothed rack, and a motor. A sliding groove is symmetrically arranged above the base, and the bottom of a laser generator is positioned directly above the sliding groove. A displacement mechanism is located directly below the base, controlling the range of motion of the base and the laser generator, thereby adjusting the processing range of the laser generator according to the workpiece specifications. A cooling mechanism is installed inside the base to provide auxiliary air cooling for the welded areas. Simultaneously, the cooling mechanism moves synchronously with the laser generator via the displacement mechanism.

[0006] Preferably, the displacement mechanism includes a planar gear, a guide rail, a spur tooth rack, a slider, and bevel teeth. The top end of the planar gear is connected to another set of bevel teeth. A spur tooth rack is provided on one side of the planar gear. A guide rail is welded to one side of the spur tooth rack. A slider is connected to the outer side of the guide rail. The top end of the slider is connected to both sides of the bottom end of the base. The planar gear is located below the base, and the guide rail is symmetrically located below the base.

[0007] Preferably, the guide rail is connected to one side of a planar gear by a straight toothed rack provided on one side.

[0008] Preferably, the cooling mechanism includes an air-cooled pipe, a motor, a drive shaft, a fan box, fan blades, and an air intake filter. The fan box is provided on one side of the air-cooled pipe, and the air-cooled pipe is connected to one side of the base. The motor is installed inside the fan box, and the output end of the motor is connected to the drive shaft. Multiple sets of fan blades are connected to the outside of the drive shaft. One side of the air intake filter is connected to one side of the fan box, and the fan box is located inside the base.

[0009] Preferably, the output end of the motor is connected to a drive shaft and a set of bevel gears.

[0010] Preferably, the drive shaft is connected to another set of bevel teeth via a bevel tooth connected by a key on one side.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. By controlling the ratio of bevel teeth, the displacement speed of the laser welding machine is adjusted. When the motor drives the bevel teeth on one side to rotate, the bevel teeth drive the bevel teeth and gears on the other side to rotate. The rotation speed of the gears is controlled, and the gears mesh with the straight toothed rack on one side to move, so that the base drives the laser generator to move. By matching the laser power and material characteristics and controlling the ratio of the straight toothed rack and gears, the welding quality of the device during the displacement process is further improved.

[0013] 2. The motor drives the planar gear to rotate, and simultaneously drives the fan blades to rotate. The air-cooling pipe is connected to the air-cooling nozzle. During the welding process, the air-cooling nozzle is staggered to provide auxiliary cooling to the surface of the workpiece, shortening the cooling time. The air-cooling nozzle is placed behind or to the side of the welding point, so that the air-cooling nozzle is at an angle of 30°–45° to the laser beam and ≥10mm away from the edge of the molten pool to avoid direct impact on the shielding gas area. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a top view schematic diagram of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the overall side view structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the internal structure of the base in this utility model.

[0018] Figure 5 This is a schematic diagram of the internal structure of the bellows in this utility model.

[0019] in:

[0020] 1. Base; 2. Laser generator; 3. Slide; 4. Displacement mechanism; 5. Planar gear; 6. Guide rail; 7. Cooling mechanism; 8. Air-cooled pipe; 9. Straight toothed rack; 10. Slider; 11. Motor; 12. Drive shaft; 13. Bevel gear; 14. Air box; 15. Fan blade; 16. Intake filter element. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 5 As shown, a movable laser welding device includes a base 1, a straight toothed rack 9, and a motor 11. A sliding groove 3 is symmetrically arranged above the base 1, and the bottom of a laser generator 2 is located directly above the sliding groove 3. A displacement mechanism 4 is located directly below the base 1. The displacement mechanism 4 controls the range of motion of the base 1 and the laser generator 2, thereby adjusting the processing range of the laser generator 2 according to the specifications of the workpiece. A cooling mechanism 7 is installed inside the base 1. The cooling mechanism 7 provides auxiliary air cooling to the welded parts. Simultaneously, the cooling mechanism 7 is synchronously displaced through the displacement mechanism 4, moving accordingly with the laser generator 2, thereby shortening the cooling time of the welded parts of the workpiece.

[0023] In this embodiment, the displacement mechanism 4 includes a planar gear 5, a guide rail 6, a spur tooth rack 9, a slider 10, and bevel teeth 13. The top shaft of the planar gear 5 is connected to another set of bevel teeth 13. A spur tooth rack 9 is provided on one side of the planar gear 5. A guide rail 6 is welded to one side of the spur tooth rack 9. A slider 10 is connected to the outer side of the guide rail 6. The top of the slider 10 is connected to both sides of the bottom end of the base 1. The planar gear 5 is located below the base 1, and the guide rail 6 is symmetrically located below the base 1. The planar gear 5 meshes with one side of the spur tooth rack 9, thereby pushing and displacing the bottom end of the base 1. The displacement speed of the base 1 is...

[0024] In this embodiment, the guide rail 6 is connected to one side of the planar gear 5 by a straight toothed rack 9 provided on one side, and the transmission speed is controlled by controlling the ratio of the number of bevel teeth 13 and the number of teeth of the straight toothed rack 9 to the number of teeth of the planar gear 5.

[0025] In this embodiment, the cooling mechanism 7 includes an air-cooled pipe 8, a motor 11, a drive shaft 12, a wind box 14, fan blades 15, and an air intake filter 16. The wind box 14 is provided on one side of the air-cooled pipe 8, and the air-cooled pipe 8 is connected to one side of the base 1. The motor 11 is installed inside the wind box 14, and the output end of the motor 11 is connected to the drive shaft 12. Multiple sets of fan blades 15 are connected to the outside of the drive shaft 12. One side of the air intake filter 16 is connected to one side of the wind box 14, and the wind box 14 is located inside the base 1. When the motor 11 drives the fan blades 15 to rotate, it provides auxiliary cooling to the workpiece while using direct cooling with refrigerant or microchannel liquid cooling to cool the workpiece, thus shortening its cooling time.

[0026] In this embodiment, the output end of the motor 11 is connected to a drive shaft 12 and a set of bevel teeth 13.

[0027] In this embodiment, the drive shaft 12 is connected to another set of bevel teeth 13 by a bevel tooth 13 connected by a side key. The rotation speed of the bevel tooth 13 is controlled by controlling the ratio of the number of teeth of the bevel tooth 13 and the other set of bevel teeth 13.

[0028] In practical applications, this portable laser welding device includes the following tasks:

[0029] Step 1: Before use, the operator first connects the slide 3 and the laser generator 2 through the sliding parts. When welding is required, the bottom of the laser generator 2 is pushed by the electric cylinder, thereby moving the position of the laser generator 2 at the top of the base 1, controlling and adjusting the position of the laser beam sprayed by the laser generator 2. At the same time, the bottom of the base 1 is connected to the outside of the guide rail 6 through the slider 10.

[0030] Step 2: Simultaneously, the straight toothed rack 9 set on the outer side of the guide rail 6 is meshed with the planar gear 5. When the laser generator 2 welds the workpiece, the motor 11 is turned on, and the motor 11 drives the drive shaft 12 and the keyed bevel gear 13 to rotate. The bevel gear 13 drives the driven bevel gear 13 on the other side to rotate, and the bevel gear 13 drives the planar gear 5 connected at the bottom to rotate, so that the planar gear 5 meshes with the outer side of the straight toothed rack 9 to drive the base 1 to move.

[0031] Step 3: The slider 10 set at the bottom of the base 1 is moved to the outside of the guide rail 6, so that the base 1 drives the laser generator 2 to move. The displacement speed of the laser generator 2 is controlled. At the same time, the laser generator 2 can be moved to the top of the base 1 by the electric cylinder, thereby completing the synchronous adjustment of the welding position of the laser generator 2.

[0032] Step 4: Simultaneously turn on the motor 11, and use the motor 11 to drive the drive shaft 12 and the fan blade 15 to rotate, so that the fan blade 15 drives the air to rotate, so that the outside air is drawn into the air box 14. After the air is filtered by the air intake filter 16 set on one side of the air box 14, it is injected into the air box 14. The filtered air is discharged by the air cooling pipe 8 set on one side of the air box 14, and the workpiece is cooled by jet spray through the small diameter air nozzle.

[0033] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A portable laser welding apparatus, characterized by: The device includes a base (1), a straight toothed rack (9), and a motor (11). A sliding groove (3) is symmetrically arranged above the base (1). The bottom of the laser generator (2) is arranged above the sliding groove (3). A displacement mechanism (4) is arranged below the base (1). The displacement mechanism (4) controls the range of motion of the base (1) and the laser generator (2), and adjusts the processing range of the laser generator (2) according to the specifications of the workpiece. A cooling mechanism (7) is arranged inside the base (1). The cooling mechanism (7) provides auxiliary air cooling for the welded parts. At the same time, the cooling mechanism (7) moves synchronously through the displacement mechanism (4) and moves accordingly with the laser generator (2).

2. A portable laser welding apparatus according to claim 1, wherein: The displacement mechanism (4) includes a planar gear (5), a guide rail (6), a spur tooth rack (9), a slider (10), and bevel teeth (13). The top end of the planar gear (5) is connected to another set of bevel teeth (13). A spur tooth rack (9) is provided on one side of the planar gear (5). A guide rail (6) is welded to one side of the spur tooth rack (9). A slider (10) is connected to the outside of the guide rail (6). The top end of the slider (10) is connected to both sides of the bottom end of the base (1). The planar gear (5) is located below the base (1). The guide rail (6) is symmetrically located below the base (1).

3. A portable laser welding apparatus according to claim 2, wherein: The guide rail (6) is connected to one side of the planar gear (5) by a straight toothed rack (9) provided on one side.

4. The portable laser welding apparatus of claim 1, wherein: The cooling mechanism (7) includes an air-cooled pipe (8), a motor (11), a drive shaft (12), a fan box (14), fan blades (15), and an air intake filter (16). The fan box (14) is provided on one side of the air-cooled pipe (8). The air-cooled pipe (8) is connected to one side of the base (1). The motor (11) is installed inside the fan box (14). The output end of the motor (11) is connected to the drive shaft (12). Multiple sets of fan blades (15) are connected to the outside of the drive shaft (12). One side of the air intake filter (16) is connected to one side of the fan box (14). The fan box (14) is located inside the base (1).

5. A portable laser welding device according to claim 4, characterized in that: The output end of the motor (11) is connected to a drive shaft (12) and one of the bevel gears (13).

6. A portable laser welding device according to claim 4, characterized in that: The drive shaft (12) is connected to another set of bevel teeth (13) by a bevel tooth (13) connected by a key on one side.

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