Laser welding head with adjustable lens height

Abstract

The utility model relates to a laser welding head, in particular to a lens height adjustable type laser welding head which comprises a light outlet, a connecting ring is fixedly arranged on the light outlet, a first thread is arranged on the outer wall of the upper end of the connecting ring, a moving part is arranged on the connecting ring, a rotating part is fixedly arranged on one side of the moving part, and a motor drives a first gear to rotate. The first gear drives the second gear, the second gear is connected with gear teeth in a clamping mode to drive the fixing ring to rotate, the fixing ring drives the upper cover, the lower cover and the lens to move up and down, the height of the lens can be fixedly adjusted according to the needed welding seam gap, and the adjusting and using efficiency of the lens is greatly improved. The lens is clamped and fixed through the upper cover and the lower cover, the outer shell and the light outlet are connected and fixed through the second threads, the outer shell and the connecting shell are connected through the first threads, and the lens is more convenient to disassemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laser welding head, especially a lens height adjustable type laser welding head. BACKGROUND

[0002] Because traditional welding method has many defects, laser welding is gradually popularized and used, is applied to a large number of thick wall structures in nuclear power, petrochemical industry, ship, ocean engineering and other industrial fields, and welding is one of the most critical processes in the manufacturing process of these structures, and welding is also the key link of determining production efficiency.For thick plate welding of large precision structure, due to the strict requirements of welding quality, weld appearance size, welding deformation and the like, laser welding machine lens is an important component of laser welding machine, and its adjustment directly affects the quality and stability of welding effect.Before using the laser welding machine to carry out welding operation and in the welding process, the lens needs to be adjusted to ensure that the laser beam spot diameter is reasonably focused on the welding point to realize accurate welding, and the distance between the lens and the welding point needs to be adjusted to achieve the purpose of adjusting the spot diameter.The distance between the lens and the welding point has an important influence on the welding effect.If the distance is too far, the laser beam diameter will be large and will be divergent, the welding point energy is not concentrated, and the welding quality is affected;If the spot diameter is too small, the laser beam will be focused too much, resulting in that the welding point penetration is too large, and welding is easy to be caused.Therefore, when adjusting the distance between the lens and the welding point, the type, thickness and weld gap of the welding material need to be reasonably adjusted to ensure that the reasonable spot is focused on the welding point, and therefore the utility model aims at providing a lens height adjustable type laser welding head. CONTENT OF THE UTILITY MODEL

[0003] The utility model mainly aims at providing a lens height adjustable type laser welding head to solve the problem of automatically adjusting the height of the lens in the laser welding head according to the weld width in the related art.

[0004] In order to realize the above-mentioned purpose, according to one aspect of the utility model, a lens height adjustable type laser welding head is provided, which comprises a light outlet, a connecting ring is fixedly arranged on the light outlet, a first thread is arranged on the outer wall of the upper end of the connecting ring, a moving part is arranged on the connecting ring, a rotating part is fixedly arranged on one side of the moving part, an outer shell is arranged on the outer wall of the moving part, a second thread is arranged on the outer wall of one end of the outer shell, and a connecting shell is threadedly connected to the second thread.

[0005] Further, the moving part comprises an upper cover, a plurality of first through holes in uniform array are arranged in the upper cover, a lower cover is arranged below the upper cover, a plurality of second through holes in uniform array are arranged in the lower cover, and the first through holes and the second through holes are arranged in correspondence.

[0006] Further, the upper surface of the upper cover is fixedly provided with a fixing ring, an outer wall of the fixing ring is fixedly provided with a plurality of uniformly arrayed teeth, the plurality of teeth are helical, and a threaded groove is formed in the lower end of the fixing ring.

[0007] Further, a bolt is threadedly connected to the threaded groove, and the upper cover and the lower cover are provided with a lens.

[0008] Further, the rotating part comprises a fixing block, a cavity is formed in the fixing block, a first power source is fixedly arranged in the cavity, a first fixed column is fixedly connected to one end of an output shaft of the first power source, a first gear is fixedly arranged on the first fixed column, and a second gear is journally arranged on one side of the first gear.

[0009] Further, a second fixed column is fixedly arranged at the center of an inner wall of the second gear, a connecting block is fixedly arranged at the lower end of the fixing block, a cavity is formed in the connecting block, one end of the cavity is fixedly connected to the second fixed column, and the other end of the cavity is rotatably connected to the first fixed column.

[0010] Compared with the prior art, the lens height adjustable laser welding head has the following beneficial effects:

[0011] In the lens height adjustable laser welding head, the motor drives the first gear to rotate, the first gear drives the second gear, the second gear journally connects the teeth to drive the fixing ring to rotate, the fixing ring drives the upper cover, the lower cover and the lens to move up and down, the height of the lens can be fixedly adjusted according to the required welding gap, the adjusting and using efficiency of the lens is greatly improved, the upper cover and the lower cover are fixed by the bolt, the lens is journally fixed by the upper cover and the lower cover, the shell and the light outlet are connected and fixed by the second screw, and the shell and the connecting shell are connected by the first screw, so that the lens is more convenient to disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the whole in the preferred embodiment of the utility model;

[0013] Figure 2 It is a structure schematic view of the whole in the preferred embodiment of the utility model;

[0014] Figure 3 It is a structure schematic view of the whole in the preferred embodiment of the utility model;

[0015] Figure 4 It is a structure schematic view of the rotating part in the preferred embodiment of the utility model;

[0016] Figure 5 It is a structure schematic view of the moving part in the preferred embodiment of the utility model;

[0017] Figure 6 It is the structure schematic view of the preferred embodiment of the utility model for side view;

[0018] Illustration: 1, light outlet; 2, connecting ring; 3, first thread; 4, bolt; 5, lens; 6, upper cover; 7, lower cover; 8, fixing ring; 9, gear tooth; 10, first gear; 101, first fixed column; 11, second gear; 110, second fixed column; 12, motor; 13, fixed block; 14, connecting block; 15, shell; 16, second thread; 17, connecting shell; 18, thread groove; 19, first through hole; 20, second through hole. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0020] Please refer to Figures 1-6 As shown in the figure, the embodiment aims to automatically adjust the height of the lens of the laser welding head according to the weld gap. Therefore, a laser welding head with adjustable lens height is provided, which comprises a light outlet 1. A connecting ring 2 is fixedly arranged on the light outlet 1. A first thread 3 is arranged on the outer wall of the upper end of the connecting ring 2. A laser seam gauge is fixedly arranged on the outer side wall of the connecting ring 2. The laser seam gauge is used to measure the gap of the weld. A moving part is arranged on the connecting ring 2. A rotating part is fixedly arranged on one side of the moving part. An outer shell 15 is arranged on the outer wall of the moving part. A second thread 16 is arranged on the outer wall of one end of the outer shell 15. A connecting shell 17 is threadedly connected to the second thread 16. The light outlet 1 is used to emit laser. The connecting ring 2 fixedly connected to the light outlet 1 is used to threadedly connect the light outlet 1 and the outer shell 15. The first thread 3 arranged on the inner wall of the lower end of the outer shell 15 is threadedly connected to the outer wall of the upper end of the connecting ring 2. This facilitates the disassembly and assembly of the light outlet 1 and the replacement of the lens 5. The moving part arranged above the connecting ring 2 is used to drive the lens 5 to move up and down. The height of the lens 5 is suitable for different weld gaps. The rotating part of the side wall of the moving part is used to provide power for the up and down movement of the moving part. The outer shell 15 of the outer wall of the moving part is used to wrap the moving part. Then the connecting shell 17 above is connected. The second thread 16 is arranged on the upper end of the outer wall of the outer shell 15. The outer shell 15 and the connecting shell 17 are threadedly connected. This facilitates the installation and disassembly. The connecting shell 17 is used to connect the laser welding head and the main body of the laser welding.

[0021] The moving part comprises the upper cover 6, a plurality of first through holes 19 are arranged in uniform array on the upper cover 6, the lower cover 7 is arranged below the upper cover 6, a plurality of second through holes 20 are arranged in uniform array on the lower cover 7, and the first through holes 19 and the second through holes 20 are arranged correspondingly. The first through holes 19 are arranged correspondingly to the second through holes 20 which are arranged in the upper cover 6 and the lower cover 7, and are used for allowing the bolt 4 to pass through to connect and fix the upper cover 6 and the lower cover 7.

[0022] The fixed ring 8 is arranged on the upper surface of the upper cover 6, a plurality of gear teeth 9 are arranged on the outer wall of the fixed ring 8 in uniform array, and a threaded groove 18 is arranged at the lower end of the fixed ring 8. The threaded groove 18 arranged at the lower end of the fixed ring 8 arranged above the upper cover 6 is in the same vertical position as the first through holes 19 and the second through holes 20, the gear teeth 9 arranged on the outer wall of the fixed ring 8 are used for being clamped with the rotating part to drive the fixed ring 8 to move up and down, and the fixed ring 8 drives the lens 5 to move up and down.

[0023] It should be noted that the upper cover 6 and the lower cover 7 are both annular bodies, are both located in the shell 15, and are threadedly connected between the inner wall of the upper cover 6 and the shell 15.

[0024] The threaded groove 18 is threadedly connected with the bolt 4, and the lens 5 is arranged between the upper cover 6 and the lower cover 7. One end of the bolt 4 passes through the first through holes 19 and the second through holes 20 to threadedly connect the upper cover 6 and the lower cover 7 on the fixed ring 8.

[0025] The rotating part comprises the fixed block 13, a cavity is arranged in the fixed block 13, a first power source is fixedly arranged in the cavity, a first fixed column 101 is fixedly connected to one end of an output shaft of the first power source, a first gear 10 is fixedly arranged on the first fixed column 101, and a second gear 11 is clamped on one side of the first gear 10. One end of the output shaft of the first power source arranged in the fixed block 13 of the rotating part is fixedly connected with the first fixed column 101 in the first gear 10, the first power source in the embodiment is preferably an electric machine 12, the output shaft of the electric machine 12 drives the first fixed column 101 to rotate, the first fixed column 101 drives the first gear 10 to rotate, the first gear 10 is clamped with the second gear 11 to drive the second gear 11 to rotate, the second gear 11 is engaged with the gear teeth 9 on the side wall of the fixed ring 8, and the fixed ring 8 is driven to rotate and move up and down.

[0026] The second fixed column 110 is arranged at the center of the inner wall of the second gear 11, the lower end of the fixed block 13 is fixedly provided with a connecting block 14, a cavity is formed in the connecting block 14, one end of the cavity is fixedly connected with the two ends of the second fixed column 110, and the lower wall of the other end of the cavity is rotationally connected with the first fixed column 101. The lower end of the first fixed column 101 is rotationally connected with the inner wall of the lower end of the connecting block 14, the second fixed column 110 arranged at the center of the second gear 11 is used for supporting the second gear 11, the upper and lower ends of the second fixed column 110 are fixedly connected with the upper and lower inner walls of the connecting block 14, the second fixed column 110 is fixed, and the cavity in the connecting block 14 is used for placing the first gear 10 and the second gear 11.

[0027] In specific use, the gap of the weld is measured by the laser range finder, the measured data is input to the control end, the control end calculates the weld width required by the laser welding head according to the weld gap, outputs the data to the motor 12, then the motor 12 in the fixed block 13 is started, the output shaft of the motor 12 drives the first gear 10 to rotate, the first gear 10 drives the second gear 11 to rotate, the second gear 11 is engaged with the gear 9 of the outer wall of the fixed ring 8, so the fixed ring 8 is driven to rotate, so the upper cover 6 is also rotated synchronously with the continuous rotation of the fixed ring 8, since the upper cover 6 below the fixed ring 8 is threadedly connected with the inner wall of the shell 15, the upper cover 6 is moved up and down while rotating, the fixed ring 8 is moved up and down, the fixed ring 8 drives the lens 5 to move up and down, the lens 5 is moved to a suitable height, then the laser welding head is started to weld to reach the required weld gap, the lens 5 needs to be replaced after a period of use, the second thread 16 on the shell 15 is rotated to be detached from the connecting shell 17, then the first thread 3 of the connecting ring 2 is rotated to detach the connecting ring 2 from the shell 15, then the upper cover 6, the lower cover 7 and the fixed ring 8 are detached from the shell 15, then the bolt 4 is detached from the first through hole 19, the second through hole 20 and the thread groove 18, the upper cover 6 and the lower cover 7 are detached, replacement is carried out, and the laser welding head can be continuously used.

[0028] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above with a preferred embodiment, however, it is not used to limit the utility model, any person skilled in the art can make some changes or modifications to the equivalent embodiments with the disclosed technical content without departing from the technical scheme range of the utility model, as long as the changes or modifications are not beyond the technical scheme content of the utility model, and the above embodiments are any modification, equivalent change and modification according to the technical essence of the utility model, which still belong to the range of the technical scheme of the utility model.

Claims

1. A laser welding head with adjustable lens height, comprising a light outlet (1), characterized in that: A connecting ring (2) is fixedly provided on the light outlet (1), a first thread (3) is provided on the outer wall of the upper end of the connecting ring (2), a moving part is provided on the connecting ring (2), a rotating part is fixedly provided on one side of the moving part, a shell (15) is provided on the outer wall of the moving part, a second thread (16) is provided on the outer wall of one end of the shell (15), and a connecting shell (17) is threadedly connected to the second thread (16).

2. The lens height adjustable laser welding head according to claim 1, characterized in that: The movable portion comprises an upper cover (6), the upper cover (6) being provided with a plurality of first through holes (19) in a uniform array, a lower cover (7) being provided below the upper cover (6), the lower cover (7) being provided with a plurality of second through holes (20) in a uniform array, the first through holes (19) and the second through holes (20) being provided correspondingly.

3. The lens height adjustable laser welding head according to claim 2, characterized in that: A fixing ring (8) is fixedly provided on the upper surface of the upper cover (6), and a plurality of gear teeth (9) in a uniform array are fixedly provided on the outer wall of the fixing ring (8), wherein the plurality of gear teeth (9) are spiral-shaped, and a thread groove (18) is provided at the lower end of the fixing ring (8).

4. The lens height adjustable laser welding head according to claim 3, characterized in that: A bolt (4) is threadedly connected to the threaded groove (18), and a lens (5) is provided between the upper cover (6) and the lower cover (7).

5. The lens height adjustable laser welding head according to claim 4, characterized in that: The rotating part comprises a fixed block (13), a cavity is defined in the fixed block (13), a first power source is fixedly arranged in the cavity, one end of the output shaft of the first power source is fixedly connected to a first fixed column (101), a first gear (10) is fixedly arranged on the first fixed column (101), and a second gear (11) is clamped to one side of the first gear (10).

6. The lens height adjustable laser welding head according to claim 5, characterized in that: A second fixing column (110) is fixedly provided at the center of the inner wall of the second gear (11), a connecting block (14) is fixedly provided at the lower end of the fixing block (13), a cavity is provided in the connecting block (14), one end of the cavity is fixedly connected to the two ends of the second fixing column (110), and the lower wall of the other end of the cavity is rotatably connected to the first fixing column (101).

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