An underwater welding laser head

Abstract

This utility model relates to the field of laser welding technology and proposes an underwater welding laser head, including a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of which is fixedly connected to the end of the laser welding head; a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, with spray holes at equal angles at the bottom of the spray disc; a connecting pipe extending to the outside of the stainless steel tube cover fixedly connected to one side of the top of the spray disc, with the bottom end of the connecting pipe communicating with the interior of the spray disc; and a protective cover movably connected to the bottom of the stainless steel tube cover, with fixing components at the top of the protective cover and the bottom of the stainless steel tube cover. Through the spray disc, connecting pipe, and spray holes, an umbrella-shaped protective gas curtain can be sprayed out, ensuring that a small area below the end of the laser welding head is free of water, facilitating welding operations. At the same time, high-pressure gas blows away welding fumes, ensuring smooth welding.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically to an underwater welding laser head. Background Technology

[0002] The laser welding head is a key component in laser welding equipment responsible for outputting the laser beam. By focusing a high-energy-density laser beam, it enables rapid fusion of metal materials. In practical applications, underwater laser welding is sometimes required. Existing underwater welding methods typically require the addition of a sealing cover to the welding head to isolate the water from the welding area.

[0003] However, using a sealed cover makes it difficult to expel welding fumes, requiring additional pipes to absorb and remove them. Furthermore, when moving the cover, it is difficult to ensure a proper seal between the cover and the welding surface, which can allow some water to enter the welding area and affect the final welding quality.

[0004] In view of this, the present invention proposes an underwater welding laser head. Utility Model Content

[0005] This invention proposes an underwater welding laser head, which solves the problem that the use of a sealed cover in related technologies makes welding cumbersome and inconvenient.

[0006] The technical solution of this utility model is as follows: an underwater welding laser head, comprising a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of the connecting plate being fixedly connected to the end of a laser welding head, a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, spray holes being opened at equal angles at the bottom end of the spray disc, a connecting pipe extending to the outside of the stainless steel tube cover being fixedly connected to one side of the top end of the spray disc, the bottom end of the connecting pipe communicating with the interior of the spray disc; a protective cover movably connected to the bottom end of the stainless steel tube cover, and fixing components being provided at the top end of the protective cover and the bottom end of the stainless steel tube cover.

[0007] Preferably, the angle of inclination of the nozzles to the horizontal direction is 60 degrees, and the inclination direction of the nozzles is a centripetal convergent arrangement.

[0008] Preferably, a flow guide platform is fixedly connected to the inner bottom wall of the spray disc, and the flow guide platform is truncated cone in shape.

[0009] Preferably, a one-way valve is provided on one side of the surface of the connecting pipe, which can prevent water from flowing back from the inside of the connecting pipe.

[0010] Preferably, a sealing element is fixedly connected to the inner wall of the spray disc, and the inner wall of the sealing element is in close contact with the end surface of the laser welding head.

[0011] Preferably, there are four connecting plates distributed at equal angles, and one end of each connecting plate is fixedly connected to the inner wall of the stainless steel tube cover by bolts.

[0012] Preferably, the fixing component includes: symmetrical slots on both sides of the bottom end of the stainless steel tube cover, a reserved groove at the lower end of both sides of the surface of the stainless steel tube cover, and a fixing bolt extending into the slot is movably connected to the inner wall of the reserved groove; and symmetrically fixed blocks on both sides of the top end of the protective cover, with a fixing screw hole on one side of the block that is threaded to one end of the fixing bolt.

[0013] Preferably, the card block and the inside of the card slot form an engaging structure, and the card slot and the card block are I-shaped.

[0014] Preferably, the protective cover is O-shaped, and the thickness of the protective cover is less than the length of the bottom end of the laser welding head extending outside the spray disk.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, the external protective gas enters the spray plate through the connecting pipe and is then sprayed out through the spray holes. The spray holes, which are distributed at equal angles and at an incline, form an umbrella-shaped air curtain. This ensures that there is no water in a small area below the laser welding head, making welding easier. At the same time, the high-pressure gas blows away the welding fumes, preventing water or fumes from affecting the welding quality and ensuring smooth welding. After welding is completed, the gas supply is stopped. At this time, a one-way valve is used to prevent water from flowing back into the connecting pipe. After the stainless steel pipe cover is completely raised to the water surface, the small amount of water inside the spray plate can also be discharged from the spray holes in a timely and thorough manner.

[0017] 2. In this utility model, when the stainless steel tube cover is moved for welding, if an accidental collision occurs, the end of the laser welding head can be protected by the protective cover and the stainless steel tube cover, so that it does not collide directly with the end of the laser welding head. This can avoid accidental damage to the end of the laser welding head and reduce unnecessary maintenance costs. At the same time, the protective cover can be disassembled, maintained, or replaced by the fixing components. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a frontal cross-sectional view of the present invention.

[0020] Figure 2 This is a front view structural diagram of the present utility model;

[0021] Figure 3This is a schematic diagram of the partially exploded structure from a low angle.

[0022] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Connecting plate; 2. Laser welding head end; 3. Spray disc; 4. Fixing assembly; 401. Slot; 402. Block; 403. Fixing screw hole; 404. Reserved slot; 405. Fixing bolt; 5. Protective cover; 6. Connecting pipe; 7. Stainless steel pipe cover; 8. Spray hole; 9. Guide platform; 10. Seal; 11. One-way valve. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] A preferred embodiment of the underwater welding laser head provided by this utility model is as follows: Figures 1 to 5 As shown: An underwater welding laser head includes a stainless steel tube cover 7; a connecting plate 1 fixedly connected to the inner wall of the stainless steel tube cover 7, with a laser welding head end 2 fixedly connected to one end of the connecting plate 1; a spray plate 3 fixedly connected to the lower end of the inner wall of the stainless steel tube cover 7, with spray holes 8 opened at equal angles at the bottom end of the spray plate 3; a connecting pipe 6 extending to the outside of the stainless steel tube cover 7 fixedly connected to one side of the top end of the spray plate 3, with the bottom end of the connecting pipe 6 communicating with the inside of the spray plate 3; and a protective cover 5 movably connected to the bottom end of the stainless steel tube cover 7, with fixing components 4 provided at the top end of the protective cover 5 and the bottom end of the stainless steel tube cover 7.

[0028] In a further preferred embodiment of this utility model, the angle of inclination of the nozzle 8 to the horizontal direction is 60 degrees, and the inclination direction of the nozzle 8 is a centripetal convergent arrangement.

[0029] In this embodiment, the nozzles 8 are distributed at equal angles and at an angle, so that the blown high-pressure gas forms an umbrella-shaped air curtain, which makes a small area below the laser welding head end 2 free of water, facilitating welding operations. At the same time, the high-pressure gas blows away the welding fumes, ensuring that the welding is carried out smoothly.

[0030] In a further preferred embodiment of the present invention, a flow guide 9 is fixedly connected to the inner bottom wall of the spray disc 3, and the flow guide 9 is shaped like a frustum.

[0031] In this embodiment, the frustum-shaped guide platform 9 is used so that after it is pulled out of the water, a small amount of water inside the spray disc 3 can be discharged from the spray hole 8 in a timely and thorough manner.

[0032] In a further preferred embodiment of the present invention, a one-way valve 11 is provided on one side of the surface of the connecting pipe 6, which can prevent water from flowing back from the inside of the connecting pipe 6.

[0033] In a further preferred embodiment of the present invention, a sealing element 10 is fixedly connected to the inner wall of the spray disc 3, and the inner wall of the sealing element 10 is in close contact with the surface of the laser welding head end 2.

[0034] In this embodiment, the sealing element 10 is used to ensure the sealing between the laser welding head end 2 and the spray plate 3.

[0035] In a further preferred embodiment of this utility model, four connecting plates 1 are distributed at equal angles, and one end of the connecting plate 1 is fixedly connected to the inner wall of the stainless steel tube cover 7 by bolts.

[0036] In this embodiment, the use of connecting plates 1 with equal angles facilitates the secure installation of the laser welding head end 2 inside the stainless steel tube cover 7.

[0037] Example 2

[0038] Based on Embodiment 1, a preferred embodiment of the underwater welding laser head provided by this utility model is as follows: Figures 1 to 5 As shown: The fixing component 4 includes: symmetrical slots 401 on both sides of the bottom end of the stainless steel tube cover 7, and reserved slots 404 at the lower ends of both sides of the surface of the stainless steel tube cover 7. The inner wall of the reserved slots 404 is movably connected with fixing bolts 405 extending into the slots 401; and symmetrically fixed blocks 402 on both sides of the top end of the protective cover 5. One side of the block 402 is provided with a fixing screw hole 403 that is threaded to one end of the fixing bolt 405.

[0039] In this embodiment, when the stainless steel tube cover 7 is moved for welding, if an accidental collision occurs, the protective cover 5 and the stainless steel tube cover 7 can be used to protect the end 2 of the laser welding head, so that it will collide with the protective cover 5 and the stainless steel tube cover 7 instead of directly colliding with the end 2 of the laser welding head. At the same time, the fixing bolt 405 can be loosened until it is completely disengaged from the inside of the fixing screw hole 403, and then the protective cover 5 can be pulled forcefully to disengage the locking block 402 from the inside of the locking groove 401, so as to disassemble, maintain or replace the protective cover 5. Furthermore, the thickness of the protective cover 5 can be selected according to the extension length of the end 2 of the laser welding head.

[0040] In a further preferred embodiment of the present invention, the card block 402 and the card slot 401 form an engaging structure, and the card slot 401 and the card block 402 are in the shape of an I-beam.

[0041] In this embodiment, the engagement between the I-shaped locking block 402 and the slot 401 enhances the stability of the initial engagement installation of the protective cover 5 and the stainless steel pipe cover 7.

[0042] In a further preferred embodiment of this utility model, the protective cover 5 is O-shaped, and the thickness of the protective cover 5 is less than the length of the bottom end of the laser welding head 2 extending outside the spray plate 3.

[0043] In this embodiment, a protective cover 5 is used to protect the movement of the protruding end of the laser welding head 2.

[0044] The working principle of this utility model is as follows: First, connect the external protective gas supply end of the connecting pipe 6. Then, lower the stainless steel pipe cover 7 underwater and position the bottom of the laser welding head end 2 at the appropriate welding point. Then, the external protective gas enters the spray plate 3 through the connecting pipe 6 and is then sprayed out through the spray holes 8. The spray holes 8 are distributed at equal angles and tilts, so that the blown high-pressure gas forms an umbrella-shaped air curtain. This ensures that there is no water in a small area below the laser welding head end 2, which facilitates welding operations. At the same time, the high-pressure gas blows away the welding fumes, ensuring that the welding is carried out smoothly.

[0045] Meanwhile, during the welding process of the laser welding head end 2 and the stainless steel tube cover 7, if a collision occurs accidentally, the protective cover 5 and the stainless steel tube cover 7 can be used to protect the laser welding head end 2, so that it will collide with the protective cover 5 and the stainless steel tube cover 7 instead of directly colliding with the laser welding head end 2, reducing the possibility of damage to the laser welding head end 2. After the welding is completed, the gas supply is stopped. At this time, the one-way valve 11 can be used to prevent water from flowing back into the connecting pipe 6. At the same time, after the stainless steel tube cover 7 rises completely to the water surface, the small amount of water inside the spray plate 3 can also be discharged in time and completely through the spray hole 8, avoiding the inconvenience of water entering the spray plate 3 during the rising process and being unable to be discharged in time.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An underwater welding laser head, characterized in that, include: Stainless steel pipe cover (7); A connecting plate (1) is fixedly connected to the inner wall of the stainless steel tube cover (7). A laser welding head end (2) is fixedly connected to one end of the connecting plate (1). A spray disc (3) is fixedly connected to the lower end of the inner wall of the stainless steel tube cover (7). Spray holes (8) are opened at equal angles at the bottom end of the spray disc (3). A connecting pipe (6) extending to the outside of the stainless steel tube cover (7) is fixedly connected to one side of the top of the spray disc (3). The bottom end of the connecting pipe (6) communicates with the inside of the spray disc (3). A protective cover (5) is movably connected to the bottom end of the stainless steel tube cover (7), and a fixing component (4) is provided at the top end of the protective cover (5) and the bottom end of the stainless steel tube cover (7).

2. The underwater welding laser head according to claim 1, characterized in that, The angle of inclination of the nozzle (8) to the horizontal direction is 60 degrees, and the inclination direction of the nozzle (8) is a centripetal convergent arrangement.

3. The underwater welding laser head according to claim 1, characterized in that, The inner bottom wall of the spray disc (3) is fixedly connected to a flow guide (9), which is shaped like a frustum.

4. The underwater welding laser head according to claim 1, characterized in that, A one-way valve (11) is provided on one side of the surface of the connecting pipe (6), and the one-way valve (11) can prevent water from flowing back from the inside of the connecting pipe (6).

5. The underwater welding laser head according to claim 1, characterized in that, The inner wall of the spray disc (3) is fixedly connected with a sealing element (10), and the inner wall of the sealing element (10) is in close contact with the surface of the laser welding head end (2).

6. The underwater welding laser head according to claim 1, characterized in that, The connecting plates (1) are distributed at equal angles, and one end of the connecting plates (1) is fixedly connected to the inner wall of the stainless steel pipe cover (7) by bolts.

7. The underwater welding laser head according to claim 1, characterized in that, The fixing component (4) includes: The stainless steel tube cover (7) has symmetrical slots (401) on both sides of the bottom end. The stainless steel tube cover (7) has a reserved slot (404) at the lower end of both sides of the surface. The reserved slot (404) has a fixing bolt (405) that extends into the slot (401) and is movably connected to the inner wall of the reserved slot (404). The clips (402) are symmetrically fixedly connected to the top two sides of the protective cover (5). The clips (402) have a fixing screw hole (403) on one side that is threaded to one end of the fixing bolt (405).

8. The underwater welding laser head according to claim 7, characterized in that, The card block (402) and the card slot (401) form an engaging structure, and the card slot (401) and the card block (402) are I-shaped.

9. An underwater welding laser head according to claim 1, characterized in that, The protective cover (5) is O-shaped, and the thickness of the protective cover (5) is less than the length of the bottom end of the laser welding head (2) extending outside the spray plate (3).

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