A valve welding device

Abstract

This utility model relates to the field of valve manufacturing and discloses a valve welding device. The device includes a frame; the front and rear inner walls of the frame are fixedly connected to outer shells. The left and right ends of the outer shells are semi-circular, and the middle of the outer shell is hollow. Rotary shafts are rotatably connected between the middle of the left and right ends of the two outer shells. Two sprockets are fixedly sleeved on the outer walls of each shaft. The two sprockets are located inside the two outer shells, and a chain is sleeved between the outer walls of the two sprockets. This utility model achieves full automation of valve body feeding, positioning, and welding through the coordinated operation of chain transmission and clamping rotation mechanisms, significantly improving efficiency and making it suitable for mass production.

Description

Technical Field

[0001] This utility model relates to the field of valve manufacturing, specifically a valve welding device. Background Technology

[0002] Valves, as key control components in fluid transport systems, are widely used in industries such as petroleum, chemical, power, and metallurgy. Their functions include shutting off, regulating, guiding, and stabilizing pressure. Welding is one of the core processes in valve manufacturing.

[0003] The valve body and flange need to be manually adjusted during welding, which is cumbersome. The lack of an automated conveying system and reliance on manual handling make it difficult to achieve continuous mass production. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, this utility model provides a valve welding device.

[0005] The technical solution adopted by this utility model is as follows:

[0006] A valve welding device includes a frame; the front and rear inner walls of the frame are fixedly connected to a shell, the left and right ends of the shell are semi-circular, the middle of the shell is hollow, and a rotating shaft is rotatably connected between the middle of the left end and the middle of the right end of the two shells, and two sprockets are fixedly sleeved on the outer wall of the rotating shaft. Two sprockets are located inside two housings. A chain is fitted between the outer walls of the two sprockets, and the chain meshes with the sprockets. A servo motor is fixedly installed on the right end of the front outer wall of the front housing. The front end of the right rotating shaft passes through the housing. The output shaft of the servo motor is fixedly connected to the front end of the right rotating shaft. There is a slide rail inside the housing, which is parallel to the chain and fixedly connected to the inner wall of the housing. There are several movable seats between the two slide rails, which are evenly distributed along the slide rails. The bottom of the movable seats is rotatably connected to the chain. The bottom of the outer wall of the movable seat is rotatably connected to two rows of pulleys, with two pulleys in each row. The pulleys in each row are slidably engaged with the upper and lower ends of the slide rails. Two jigs are fixedly connected to the upper end of the movable seats. There is a second frame inside the first frame, which extends front and back. The upper part of the second frame passes through the inner side of the two housings. A clamping and rotating mechanism is set at the top of the second frame. Two welding guns are installed on the inner wall of the top of the first frame.

[0007] The upper end of the fixture is an arc-shaped depression. Several straight rollers are rotatably arranged on the inner wall of the fixture. The straight rollers are evenly distributed along the upper arc-shaped depression of the fixture, and the outer wall of the straight rollers is exposed above the upper arc-shaped depression of the fixture.

[0008] The clamping and rotating mechanism includes a guide rail, which is fixed to the top of frame two. A bidirectional lead screw is located at the top center of the guide rail. The front and rear ends of the bidirectional lead screw are rotatably connected to the top of the front and rear ends of frame two. A servo motor two is fixedly installed at the top of the rear end of frame two. The front end of the output shaft of servo motor two is fixedly connected to the rear end of the bidirectional lead screw. Two movable frames are set on the top of the guide rail. The bottom of each movable frame is threaded to the bidirectional lead screw. The two movable frames are symmetrically distributed front and rear. The bottom of each movable frame is slidably engaged with the guide rail. Three-jaw chucks are set on the top of the opposite side walls of each movable frame. The two movable frames are rotatably connected to the two three-jaw chucks respectively. A servo motor three is fixedly installed on the top of the rear side wall of the rear movable frame. The output shaft of servo motor three passes through the rear movable frame and is rotatably connected to the rear movable frame. The output shaft of servo motor three is fixedly connected to the base of the rear three-jaw chuck.

[0009] Two welding torches are set on the outside of the frame. Each welding torch is fixedly connected to a slider. The outer wall of the slider is slidably engaged with the inner wall of the frame. The frame is slidably engaged with the side wall of the slot plate. The slot plate is fixedly connected to the upper inner side of the frame. The servo motor is fixed to the upper part of the frame. The output shaft of the servo motor passes through the upper part of the frame and is rotatably connected to the upper part of the frame. The output shaft of the servo motor is fixedly connected to a threaded rod. The threaded rod passes through the slider and is threadedly connected to the slider. A bolt passes through the vertical side wall of the frame and is threadedly connected to the vertical side wall of the frame. The end of the bolt abuts against the side wall of the slot plate.

[0010] The beneficial effects of this utility model are:

[0011] This invention achieves full automation of valve body feeding, positioning, and welding processes through the coordinated operation of chain conveying and clamping rotation mechanism, significantly improving efficiency and making it suitable for mass production.

[0012] The bidirectional lead screw and slide rail design ensures the coaxiality of the flange and valve body, while the straight rollers and pulleys reduce friction and prevent welding misalignment. The servo motor controls the rotation speed to ensure uniformity and consistent weld formation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Rear view structural diagram;

[0015] Figure 3 This is a schematic diagram of the chain structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the clamping and rotating mechanism of this utility model;

[0017] Figure 5 yes Figure 4 Enlarged view of a specific area.

[0018] The reference numerals in all the attached drawings are as follows: 1. Frame 1; 2. Outer shell; 3. Shaft; 4. Sprocket; 5. Chain; 6. Servo motor 1; 7. Slide rail; 8. Moving seat; 9. Pulley; 10. Fixture; 11. Straight roller; 12. Frame 2; 13. Guide rail; 14. Bidirectional lead screw; 15. Servo motor 2; 16. Moving frame; 17. Three-jaw chuck; 18. Servo motor 3; 19. Servo motor; 20. Welding torch; 22. Slot plate; 23. Frame; 24. Bolt; 25. Slider; 26. Threaded rod. Detailed Implementation

[0019] like Figure 1-4 As shown: A valve welding device includes a frame 1; the front and rear inner walls of the frame 1 are fixedly connected to outer shells 2. The left and right ends of the outer shells 2 are semi-circular, and the middle of the outer shells 2 is hollow. A rotating shaft 3 is rotatably connected between the middle of the left and right ends of the two outer shells 2. Two sprockets 4 are fixedly sleeved on the outer walls of the rotating shafts 3. The two sprockets 4 are located inside the two outer shells 2 respectively. A chain 5 is sleeved between the outer walls of the left and right sprockets 3, and the chain 4 meshes with the sprockets 4. A servo motor 6 is fixedly installed on the right end of the front outer wall of the front outer shell 2. The front end of the right rotating shaft 3 extends through the outer shell 2, and the output shaft of the servo motor 6 is fixedly connected to the front end of the right rotating shaft 3. A slide rail 7 is provided inside the outer shell 2, parallel to the chain 5, and fixedly connected to the inner wall of the outer shell 2. Several movable seats 8 are provided between the two slide rails 7, and the movable seats 8 are evenly distributed along the slide rails 7. The bottom of the movable seat 8 is rotatably connected to the chain 5. The bottom of the outer wall of the movable seat 8 is rotatably connected to two rows of pulleys 9. There are two pulleys 9 in each row. The pulleys 9 in each row are slidably engaged with the upper and lower ends of the slide rail 7. The upper end of the movable seat 8 is fixedly connected to two jigs 10. The inner side of the frame 1 has a frame 2 12. The frame 2 12 extends back and forth. The upper part of the frame 2 12 passes through the inner side of the two outer shells 2. The top of the frame 2 12 is equipped with a clamping and rotating mechanism. Two welding guns 20 are installed on the inner side wall of the top of the frame 1.

[0020] The fixture 10 has a shell structure. The upper end of the fixture 10 is an arc-shaped depression. Several straight rollers 11 are rotatably arranged on the inner wall of the fixture 10. The straight rollers 11 are evenly distributed along the upper arc-shaped depression of the fixture 10, and the outer wall of the straight rollers 11 is exposed above the upper arc-shaped depression of the fixture 10.

[0021] The clamping and rotating mechanism includes a guide rail 13, which is fixed to the top of the second frame 12. A bidirectional lead screw 14 is located at the top center of the guide rail 13. The front and rear ends of the bidirectional lead screw 14 are rotatably connected to the top of the front and rear ends of the second frame 12. A servo motor 15 is fixedly mounted on the top of the rear end of the second frame 12. The front end of the output shaft of the servo motor 15 is fixedly connected to the rear end of the bidirectional lead screw 14. Two movable frames 16 are provided on the top of the guide rail 13. The bottom of both movable frames 16 is threadedly connected to the bidirectional lead screw 14. The two movable frames 16 are symmetrically distributed front and back. The bottom of the two movable frames 16 is slidably engaged with the guide rail 13. Each of the two movable frames 16 has a three-jaw chuck 17 on the top of its opposite side wall. The two movable frames 16 are rotatably connected to the two three-jaw chucks 17 respectively. A servo motor 3 18 is fixedly installed on the top of the rear side wall of the rear movable frame 16. The output shaft of the servo motor 3 18 passes through the rear movable frame 16 and is rotatably connected to the rear movable frame 16. The output shaft of the servo motor 3 18 is fixedly connected to the base of the rear three-jaw chuck 17.

[0022] Two welding torches 20 are set on the outside of the frame 23. Each welding torch 20 is fixedly connected to a slider 25. The outer wall of the slider 25 is slidably engaged with the inner wall of the frame 23. The frame 23 is slidably engaged with the side wall of the slot plate 22. The slot plate 22 is fixedly connected to the upper inner side of the frame 1. The servo motor 19 is fixed to the upper part of the frame 23. The output shaft of the servo motor 19 passes through the upper part of the frame 23. The output shaft of the servo motor 19 is rotatably connected to the upper part of the frame 23. The output shaft of the servo motor 19 is fixedly connected to a threaded rod 26. The threaded rod 26 passes through the slider 25. The threaded rod 26 is threadedly connected to the slider 25. The bolt 24 passes through the vertical side wall of the frame 23. The bolt 24 is threadedly connected to the vertical side wall of the frame 23. The end of the bolt 24 abuts against the side wall of the slot plate 22.

[0023] The valve body is placed on the fixture 10. The arc-shaped concave design of the fixture 10 and the straight roller 11 ensure that the valve body fits stably and can move with rotation.

[0024] Servo motor 6 drives shaft 3 to move sprocket 4 and chain 5. Chain 5 transmits valve body to welding station at a constant speed along slide rail 7 via movable seat 8. Pulley 9 cooperates with slide rail 7 to ensure smooth movement.

[0025] Servo motor 15 drives bidirectional lead screw 14 to rotate, causing the front and rear moving frames 16 to move towards each other, which in turn drives the three-jaw chuck 17 to clamp the flange and press against both ends of the valve body, achieving precise centering.

[0026] Servo motor 18 drives the rear three-jaw chuck 17 to rotate, causing the flange and valve body to rotate synchronously, ensuring uniform circumferential force during welding.

[0027] Servo motor 19 controls welding torch 20 to move down to the welding position, and circumferential welding is completed during valve body rotation.

[0028] This utility model only protects the mechanical parts; the functions implemented by the software control part are not within the scope of protection of this utility model.

Claims

1. A valve welding device, comprising a frame (1), characterized in that, The front and rear inner walls of frame 1 (1) are fixedly connected to the outer shell (2). The left and right ends of the outer shell (2) are semi-circular, and the middle of the outer shell (2) is hollow. The middle of the left end and the middle of the right end of the two outer shells (2) are rotatably connected to the shaft (3). The outer wall of the shaft (3) is fixedly fitted with two sprockets (4). The two sprockets (4) are located in the two outer shells (2) respectively. The outer walls of the left and right sprockets (4) are fitted with a chain (5). The chain (5) meshes with the sprocket (4). The right end of the front outer wall of the front outer shell (2) is fixedly installed with a servo motor 1 (6). The front end of the right shaft (3) passes through the outer shell (2). The output shaft of the servo motor 1 (6) is fixedly connected to the front end of the right shaft (3). The outer shell (2) has a slide rail (7). The slide rail (7) is parallel to the chain (5). The rail (7) is fixedly connected to the inner wall of the outer shell (2). There are several movable seats (8) between the two slide rails (7). The movable seats (8) are evenly distributed along the slide rails (7). The bottom of the movable seats (8) is rotatably connected to the chain (5). The bottom of the outer wall of the movable seats (8) is rotatably connected to the upper and lower rows of pulleys (9). There are two pulleys (9) in each row. The pulleys (9) in each row are slidably engaged with the upper and lower ends of the slide rails (7). The upper end of the movable seats (8) is fixedly connected to two jigs (10). The inner side of the frame one (1) has a frame two (12). The frame two (12) extends back and forth. The upper part of the frame two (12) passes through the inner side of the two outer shells (2). The top of the frame two (12) is provided with a clamping and rotating mechanism. The top inner wall of the frame one (1) is equipped with two welding guns (20).

2. The valve welding device according to claim 1, characterized in that, The fixture (10) is a shell structure. The upper end of the fixture (10) is an arc-shaped depression. Several straight rollers (11) are rotatably arranged on the inner wall of the fixture (10). The straight rollers (11) are evenly distributed along the upper arc-shaped depression of the fixture (10). The outer wall of the straight rollers (11) is exposed above the upper arc-shaped depression of the fixture (10).

3. The valve welding device according to claim 1, characterized in that, The clamping and rotating mechanism includes a guide rail (13), which is fixed to the top of the second frame (12). A bidirectional lead screw (14) is located at the top center of the guide rail (13). The front and rear ends of the bidirectional lead screw (14) are rotatably connected to the top of the front and rear ends of the second frame (12). A servo motor (15) is fixedly mounted on the top of the rear end of the second frame (12). The front end of the output shaft of the servo motor (15) is fixedly connected to the rear end of the bidirectional lead screw (14). Two movable frames (16) are provided on the top of the guide rail (13). The bottom of both movable frames (16) is threadedly connected to the bidirectional lead screw (14). 16) The two movable frames (16) are symmetrically distributed front and back. The bottom of the two movable frames (16) is slidably connected to the guide rail (13). The top of the opposite side wall of the two movable frames (16) is provided with a three-jaw chuck (17). The two movable frames (16) are rotatably connected to the two three-jaw chucks (17) respectively. The top of the rear side wall of the rear movable frame (16) is fixedly installed with a servo motor three (18). The output shaft of the servo motor three (18) passes through the rear movable frame (16). The output shaft of the servo motor three (18) is rotatably connected to the rear movable frame (16). The output shaft of the servo motor three (18) is fixedly connected to the base of the rear three-jaw chuck (17).

4. The valve welding device according to claim 1, characterized in that, Two welding torches (20) are set on the outside of the frame (23). Each welding torch (20) is fixedly connected to a slider (25). The outer wall of the slider (25) is slidably engaged with the inner wall of the frame (23). The frame (23) is slidably engaged with the side wall of the slot plate (22). The slot plate (22) is fixedly connected to the upper inner side of the frame (1). The servo motor (19) is fixed to the upper part of the frame (23). The output shaft of the servo motor (19) passes through the upper part of the frame (23). The output shaft of the servo motor (19) is rotatably connected to the upper part of the frame (23). The output shaft of the servo motor (19) is fixedly connected to a threaded rod (26). The threaded rod (26) passes through the slider (25). The threaded rod (26) is threadedly connected to the slider (25). The bolt (24) passes through the vertical side wall of the frame (23). The bolt (24) is threadedly connected to the vertical side wall of the frame (23). The end of the bolt (24) abuts against the side wall of the slot plate (22).

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