Laser welding device for annular welding

Abstract

The utility model belongs to the technical field of annular welding, and particularly relates to a laser welding device for annular welding, which solves the problems of poor welding effect and difficulty in adjustment in the prior art and comprises a base, a control cabinet is mounted at the top of the base, and a welding frame is fixedly connected to the top of the base through screws. A rotating limiting block is slidably assembled in the welding frame, a cable fixing block is fixedly connected to one side of the rotating limiting block, a circular rack is fixedly connected to the interior of the welding frame in a sliding mode, a sliding frame is slidably assembled in the welding frame, and a servo motor is installed on one side of the sliding frame. Through the arrangement of the servo motor, the electric air cylinder and other structures, after the circular part is fixed, the electric air cylinder is started to adjust the position of the welding head, then the servo motor is started to rotate the angle of the welding head, the welding head can directly conduct uniform welding on the peripheral face of the circular part, and the welding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of ring welding technology, specifically a laser welding device for ring welding. Background Technology

[0002] Currently, laser welding equipment used for ring welding is a laser device specifically designed to perform ring or circumferential welding tasks. It uses a high-energy laser beam as a heat source and, through precise mechanical control and optical systems, accurately focuses and guides the laser beam onto the ring surface of the workpiece to be welded, achieving efficient and precise welding.

[0003] The prior art, patent number CN215545805U, discloses a laser welding auxiliary device for welding annular pipe fittings. This device includes a base with two symmetrical welding frames on it. Each welding frame has a through hole, through which a rotating tube is connected via a bearing. One end of the rotating tube has a three-jaw chuck, and the other end has an external gear. A gear shaft connects the two welding frames via a bearing, and the external gear meshes with the gear shaft. A ring handle is fixedly connected to the side of the external gear furthest from the welding frame. This laser welding auxiliary device for welding annular pipe fittings has a simple structure and is easy to operate. By rotating the ring handle, the two annular pipe fittings to be welded rotate smoothly and synchronously while the welding head remains stationary, resulting in high welding precision, high efficiency, and excellent welding effect.

[0004] However, when using this patent, the welding of the circular parts involves rotating the circular parts for welding. However, this welding method results in the width of the welded circular parts being larger than that of the unwelded circular parts, leading to reduced welding accuracy and poor stability. Furthermore, when placing the circular parts, personnel are required to lift and adjust them, making the adjustment difficult. Utility Model Content

[0005] The purpose of this invention is to provide a laser welding device for ring welding, which solves the problems of poor welding effect and difficulty in adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a laser welding device for ring welding, comprising a base, a control cabinet mounted on the top of the base, a welding frame fixedly connected to the top of the base by screws, a rotation limit block slidably mounted inside the welding frame, a cable fixing block fixedly connected to one side of the rotation limit block, a circular rack slidably fixedly connected inside the welding frame, a sliding frame slidably mounted inside the welding frame, a servo motor mounted on one side of the sliding frame, the output end of the servo motor connected to a coaxially arranged rotating shaft via a coupling, a rotating gear fixedly sleeved on the outer circumference of the rotating shaft, the circular rack meshing with the rotating gear, an external cable mounted on one side of the sliding frame, an electric cylinder mounted inside the sliding frame, a sliding rod mounted on the output end of the electric cylinder, and a welding head mounted on one side of the sliding rod.

[0007] Preferably, the top of the base is fixedly connected to eight symmetrically arranged limiting shafts, and limiting circular blocks are fixedly sleeved on the outer circumferential surface of the limiting shafts. The top of the base is equipped with four symmetrically arranged rotating motors, and the output end of the rotating motors is connected to a coaxially arranged rotating shaft through a coupling. The top of the rotating shaft is fixedly connected to a double-threaded screw. Two symmetrically arranged clamping circular frames are movably sleeved on the outer circumferential surface of every two double-threaded screws and the four limiting shafts. A number of circumferentially evenly distributed ball bearings are rotatably installed on the inner wall of the clamping circular frames.

[0008] Preferably, the sliding frame has a sliding groove inside, and the rotation limiting block is slidably assembled inside the sliding groove, the sliding groove being used for the sliding of the rotation limiting block.

[0009] Preferably, a limiting groove is provided inside the sliding frame, and the sliding frame is slidably assembled inside the limiting groove, which is used to limit the sliding of the sliding frame.

[0010] Preferably, the sliding frame has a circular groove inside, and the welding head is slidably fitted inside the circular groove, which is used for the extension of the welding head.

[0011] Preferably, the clamping frame has two symmetrically arranged threaded grooves inside, and the two double-threaded screws are respectively threaded into the two threaded grooves. The threaded grooves are used for the double-threaded screws to drive the clamping frame to slide.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the setting of servo motor, electric cylinder and other structures, after the circular part is fixed, the electric cylinder is turned on to adjust the position of the welding head, and then the servo motor is turned on to rotate the angle of the welding head, so that the welding head can directly and uniformly weld the outer circumference of the circular part, thereby improving the welding effect.

[0014] 2. This utility model, through the setting of a rotating motor, ball bearings and other structures, allows the position of a circular part to be slidably adjusted by the ball bearings when the circular part is placed. After adjustment, the rotating motor is turned on, causing the two clamping circular frames to move to each other's positions to clamp the circular part, making the placement of the workpiece simpler. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an overall structural diagram of the welding frame of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the welding frame of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the sliding frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the clamping circular frame transmission structure of this utility model.

[0020] In the diagram: 1. Base; 2. Control cabinet; 3. Welding frame; 4. Rotation limit block; 41. Cable fixing block; 5. Sliding frame; 6. Servo motor; 7. Rotating shaft; 8. Rotating gear; 9. Electric cylinder; 10. Sliding rod; 11. Welding head; 12. External cable; 13. Gear rack; 14. Limiting shaft; 15. Limiting round block; 16. Rotating motor; 17. Rotating shaft; 18. Double threaded screw; 19. Clamping round frame; 20. Ball bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5A laser welding device for ring welding includes a base 1, a control cabinet 2 mounted on top of the base 1, a welding frame 3 fixedly connected to the top of the base 1 by screws, a rotation limit block 4 slidably mounted inside the welding frame 3, a cable fixing block 41 fixedly connected to one side of the rotation limit block 4, a circular gear rack 13 slidably fixedly connected inside the welding frame 3, a sliding frame 5 slidably mounted inside the welding frame 3, a servo motor 6 mounted on one side of the sliding frame 5, and a coaxially arranged rotating shaft 7 connected to the output end of the servo motor 6 via a coupling. A rotating shaft 7 is fixedly sleeved on the outer circumference of the rotating shaft 7. The moving gear 8 and the circular rack 13 mesh with the rotating gear 8. An external cable 12 is installed on one side of the sliding frame 5. An electric cylinder 9 is installed inside the sliding frame 5. A sliding rod 10 is installed at the output end of the electric cylinder 9. A welding head 11 is installed on one side of the sliding rod 10. Through the setting of the servo motor 6, electric cylinder 9 and other structures, after the circular part is fixed, the electric cylinder 9 is turned on to adjust the position of the welding head 11. Then the servo motor 6 is turned on to rotate the angle of the welding head 11, so that the welding head 11 can directly and evenly weld the outer circumference of the circular part, thereby improving the welding effect.

[0023] Please see Figure 1-5 The top of the base 1 is fixedly connected to eight symmetrically arranged limiting shafts 14. Limiting round blocks 15 are fixedly sleeved on the outer circumferential surface of the limiting shafts 14. The top of the base 1 is equipped with four symmetrically arranged rotary motors 16. The output end of the rotary motors 16 is connected to a coaxially arranged rotary shaft 17 through a coupling. The top of the rotary shaft 17 is fixedly connected to a double threaded screw 18. Two symmetrically arranged clamping round frames 19 are movably sleeved on the outer circumferential surface of each pair of double threaded screws 18 and the four limiting shafts 14. Several circumferentially distributed ball bearings 20 are rotatably installed on the inner wall of the clamping round frame 19. Through the arrangement of the rotary motors 16, ball bearings 20 and other structures, when the round part is placed, the position of the round part can be slidably adjusted by the ball bearings 20. After the adjustment is completed, the rotary motors 16 are turned on, so that the two clamping round frames 19 move to the opposite position to clamp the round part, making the placement of the workpiece simpler.

[0024] Please see Figure 1-5 The sliding frame 5 has a sliding groove inside, the rotating limit block 4 is slidably assembled inside the sliding groove, the sliding frame 5 has a limit groove inside, the sliding frame 5 is slidably assembled inside the limit groove, the sliding frame 5 has a circular groove inside, the welding head 11 is slidably assembled inside the circular groove, the clamping circular frame 19 has two symmetrically arranged threaded grooves inside, and two double threaded screws 18 are respectively threaded into the two threaded grooves.

[0025] The specific implementation process of this utility model is as follows: After the circular part is fixed, the electric cylinder 9 is first turned on through the control cabinet 2 (the control cabinet 2 is electrically connected to the electrical equipment inside the equipment, and the electrical equipment inside the equipment can be controlled through the control cabinet 2). The electric cylinder 9 starts, causing the sliding rod 10 to slide. The sliding rod 10 causes the welding head 11 to extend and contact the circular part. Then, the servo motor 6 and the welding head 11 are turned on at the same time. The servo motor 6 turns on, causing the rotating shaft 7 to rotate. The rotating shaft 7 drives the rotating gear 8 to rotate. The rotating gear 8 rotates and, through its cooperation with the circular rack 13, causes the rotating limit block 4 to rotate at a uniform speed. At this time, the welding head 11 performs welding. During the rotation of the welding head 11, the external cable 12 rotates with the welding head 11 through the cable fixing block 41. By uniformly welding the circular part through circular rotation, the welding effect is improved.

[0026] Furthermore, before fixing the circular part, the circular part is placed inside the clamping frame 19. Then, by pushing the circular part, the position of the circular part is adjusted through the cooperation of the ball bearings 20. After the adjustment is completed, the rotating motor 16 is turned on. The rotating motor 16 rotates the rotating shaft 17, which in turn rotates the double threaded screw 18 (the upper and lower threads of the double threaded screw 18 are in opposite directions). This causes the two clamping frames 19 to move to each other's positions to clamp the circular part, making the placement of the workpiece simpler.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding apparatus for ring welding, comprising a base (1), characterized in that: A control cabinet (2) is installed on the top of the base (1). A welding frame (3) is fixedly connected to the top of the base (1) by screws. A rotation limit block (4) is slidably assembled inside the welding frame (3). A cable fixing block (41) is fixedly connected to one side of the rotation limit block (4). A circular rack (13) is slidably fixedly connected inside the welding frame (3). A sliding frame (5) is slidably assembled inside the welding frame (3). A servo motor (6) is installed on one side of the sliding frame (5). A rotating shaft (7) is coaxially arranged at the output end of the servo motor (6) through a coupling. A rotating gear (8) is fixedly sleeved on the outer circumference of the rotating shaft (7). The circular rack (13) meshes with the rotating gear (8). An external cable (12) is installed on one side of the sliding frame (5). An electric cylinder (9) is installed inside the sliding frame (5). A sliding rod (10) is installed at the output end of the electric cylinder (9). A welding head (11) is installed on one side of the sliding rod (10).

2. The laser welding apparatus for ring welding according to claim 1, characterized in that: The top of the base (1) is fixedly connected to eight symmetrically arranged limiting shafts (14), and a limiting circular block (15) is fixedly sleeved on the outer circumferential surface of the limiting shaft (14). The top of the base (1) is equipped with four symmetrically arranged rotating motors (16). The output end of the rotating motor (16) is connected to a coaxially arranged rotating shaft (17) through a coupling. The top of the rotating shaft (17) is fixedly connected to a double threaded screw (18). Two symmetrically arranged clamping circular frames (19) are movably sleeved on the outer circumferential surface of each pair of double threaded screws (18) and the four limiting shafts (14). Several circumferentially distributed ball bearings (20) are rotatably installed on the inner wall of the clamping circular frame (19).

3. The laser welding apparatus for ring welding according to claim 1, characterized in that: The sliding frame (5) has a sliding groove inside, and the rotation limiting block (4) is slidably assembled inside the sliding groove.

4. The laser welding apparatus for ring welding according to claim 1, characterized in that: The sliding frame (5) has a limiting groove inside, and the sliding frame (5) is slidably assembled inside the limiting groove.

5. The laser welding apparatus for ring welding according to claim 1, characterized in that: The sliding frame (5) has a circular groove inside, and the welding head (11) is slidably assembled inside the circular groove.

6. A laser welding apparatus for ring welding according to claim 2, characterized in that: The clamping frame (19) has two symmetrically arranged threaded grooves inside, and the two double-threaded screws (18) are respectively threaded into the two threaded grooves.

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