Valve automated welding apparatus

Abstract

The application discloses a valve automatic welding device and relates to the technical field of welding devices.The valve automatic welding device comprises a base, limit plates are arranged on the top of the base and left and right sides of the base, two groups of supporting seats are fixedly arranged between the two groups of limit plates, and a welding mechanism for completing valve welding work is arranged on the top of the two groups of supporting seats.The valve automatic welding device is provided with elastic fitting wheel assemblies on the sides of laser welding guns, the third damping springs continuously push the fitting wheels to closely adhere to the outer wall of the valve and slide along the outer wall, the adjusting motor drives the threaded rod to rotate through the belt pulley and the first spline rod, the linkage connecting block synchronously adjusts the vertical height of the laser welding gun, the outer diameter fluctuation caused by the roundness of the workpiece and the clamping deviation can be compensated in real time by the fitting wheel, the laser welding gun and the groove always maintain a constant laser action distance, the laser irradiation energy is uniform and stable, and the problems of virtual welding, burning through and uneven melting depth are solved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to an automated valve welding device. Background Technology

[0002] Valves are core pressure-bearing components in fluid pipeline systems. The circumferential butt weld between the valve body, valve cover, and connecting pipe is a key structure ensuring the valve's sealing performance and pressure resistance. The quality of the weld directly determines the valve's pressure rating, service life, and operational safety. Currently, various automated valve welding equipment are available on the market. These devices meet the valve processing requirements to a certain extent, but some shortcomings still exist.

[0003] Welding uniformity is difficult to guarantee: Because the distance between the laser welding gun and the welding surface may change during the welding process, the welding energy distribution is uneven, which affects the uniformity and quality of the welding. Some existing devices are insufficient in controlling the welding distance, making it difficult to ensure the consistency of welding quality.

[0004] Post-welding processing is cumbersome: After welding, the presence of impurities such as weld slag and oxide scale will affect the surface quality of the welded parts. Existing equipment often lacks an effective automatic grinding mechanism, requiring manual post-processing, which increases labor intensity and time costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automated valve welding device, which solves the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automated valve welding equipment, including a base, with limit plates provided on both the left and right sides of the top of the base, and two sets of support seats fixedly assembled between the two sets of limit plates, and a welding mechanism for completing valve welding operations is jointly mounted on the top of the two sets of support seats.

[0007] The welding mechanism includes a fixing ring, which is fixed to the top surface of the support base. An arc-shaped sliding groove is provided on the inner side wall of the fixing ring, and a housing is slidably assembled inside the arc-shaped sliding groove through a first slider.

[0008] A laser welding gun is mounted on the inner side of the chassis, and a bonding wheel is provided on the side of the laser welding gun. The bonding wheel is used to control the distance between the laser welding gun and the welding surface of the valve in real time.

[0009] A second gear ring is fixedly provided on the inner wall of the fixed ring, and a dual-axis motor is fixedly installed inside the chassis. The two output shafts of the dual-axis motor are respectively fixedly connected to the second gear, and the second gears on both sides are meshed with the second gear ring for transmission.

[0010] As a further preferred embodiment of this technical solution, a positioning frame is fixedly connected to the inner end face of the chassis, and a sliding block is vertically slidably mounted on the positioning frame. A third damping spring is provided on both the left and right sides of the top of the sliding block. The top of the third damping spring is fixedly connected to the top surface of the positioning frame. A first spline rod is rotatably mounted on the lower end of the sliding block. A threaded rod is slidably sleeved on the lower end of the first spline rod along its own axial direction. The contact wheel is rotatably mounted on the end of the threaded rod. A connecting block is threadedly fitted on the outer wall of the threaded rod. The connecting block is slidably clamped onto the positioning frame, and the inner end face of the connecting block is fixedly connected to the laser welding gun.

[0011] As a further preferred embodiment of this technical solution, an adjustment motor is fixedly mounted on the inner side of the sliding block, and the output shaft of the adjustment motor is connected to the first spline rod through a belt pulley transmission assembly.

[0012] As a further preferred embodiment of this technical solution, an arc-shaped rod is fixedly connected to the outside of the chassis, and a second slider is fixedly connected to the end of the arc-shaped rod. The second slider is slidably assembled inside the arc-shaped groove. A second spline rod is rotatably mounted on the second slider. A third gear is fixedly assembled to the outer end of the second spline rod. The upper end face of the fixing ring is integrally formed with teeth. The third gear meshes with the teeth. A moving rod is slidably sleeved along the axial direction at the inner end of the second spline rod. A limit block is fixedly connected to the top end of the moving rod. A second damping spring is provided between the limit block and the second slider. The second damping spring is sleeved on the outside of the second spline rod.

[0013] As a further preferred embodiment of this technical solution, a movable frame is slidably mounted on the side of the second slider, and the movable rod is rotatably mounted inside the movable frame. A grinding wheel is rotatably mounted on the inner end of the movable frame via a rotating shaft, and a bevel gear is mounted on the other end of the rotating shaft of the grinding wheel. The bevel gear meshes with the end of the movable rod for transmission.

[0014] As a further preferred embodiment of this technical solution, a rotating ring is coaxially fixedly connected to the outer side of the fixed ring. The rotating ring has several arc-shaped grooves evenly opened in the circumferential direction. A second sliding rod is slidably assembled inside the arc-shaped groove. A telescopic rod is connected to the inner end of the second sliding rod. The telescopic rod slides through the ring body of the fixed ring. A pressure plate is fixed to the inner end of the telescopic rod.

[0015] As a further preferred embodiment of this technical solution, the top surface of the base is provided with three sets of transverse sliding grooves in parallel. A bidirectional lead screw is rotatably mounted inside the middle set of sliding grooves. A drive motor is provided at one end of the bidirectional lead screw. First sliding rods are fixedly mounted in the left and right sets of sliding grooves respectively. Moving seats are respectively threaded on the left and right sections of the bidirectional lead screw with opposite threads. The two ends of the moving seats are slidably sleeved on the outside of the first sliding rod on the same side. The limiting plate is fixedly installed on the top surface of the moving seats.

[0016] As a further preferred embodiment of this technical solution, a transmission assembly is mounted on the support base. The transmission assembly includes a positioning shaft, which is rotatably mounted on the support base. The outer end of the positioning shaft is connected to a bidirectional lead screw via a synchronous belt pulley transmission component. A first gear is fixedly mounted on the inner end of the positioning shaft. A first gear ring is integrally formed on the outer edge of the upper end of the rotating ring. The first gear and the first gear ring are meshed and transmitted to each other.

[0017] Compared with existing technologies, it has the following advantages:

[0018] By equipping the laser welding gun with an elastic contact wheel assembly, the third damping spring continuously pushes the contact wheel to slide closely against the outer wall of the valve. The adjusting motor drives the threaded rod to rotate through the pulley and the first spline rod, and the linkage block synchronously adjusts the vertical height of the laser welding gun. The outer diameter fluctuation caused by the roundness of the workpiece and the clamping offset can be compensated for in real time by the contact wheel. The welding gun and the bevel always maintain a constant laser action distance, and the laser irradiation energy is uniform and stable, solving the problems of incomplete welding, burn-through, and uneven penetration. When the machine box rotates circumferentially with the fixed ring, the arc rod synchronously drives the grinding wheel assembly to rotate around the valve body. While the dual-axis motor drives the welding gun to weld circumferentially, the third gear meshes with the tooth pattern to drive the second spline rod and the moving rod to rotate. Through the bevel gear transmission, the grinding wheel is driven to rotate synchronously, and the weld slag and oxide scale are directly ground and removed at the moment the welding is completed. Relying on the elastic push of the second damping spring to push the grinding wheel to fit the weld, there is no need for secondary clamping and transportation, eliminating the need for a separate grinding station, reducing the intensity of manual labor, and avoiding scratches and dimensional deviations of the valve body caused by manual grinding.

[0019] The drive motor drives the bidirectional lead screw to synchronously drive the moving seats and limiting plates on both sides to axially clamp the two ends of the valve body. The bidirectional lead screw drives the positioning shaft and the first gear to rotate through the synchronous belt pulley transmission assembly. The arc groove of the rotating ring pushes multiple sets of telescopic rods and pressure plates to retract synchronously inward, providing multi-directional auxiliary clamping and positioning from the circumference of the valve body, forming an axial + radial composite clamping constraint, which effectively offsets welding thermal stress and prevents the valve body from rotating, shifting, or deforming. The radial extension of the pressure plate can be adjusted with the rotating ring, and it can be adapted to valve workpieces with different outer diameters and shapes without changing tooling, making the equipment highly versatile.

[0020] The precise engagement of the bidirectional lead screw and synchronous belt pulley transmission components enables the synchronous rotation of the positioning shaft and the first gear. This precise transmission mechanism ensures the accurate rotation of the rotating ring. Furthermore, the clever cooperation between the arc-shaped groove and the second sliding rod pushes the telescopic rod and pressure plate inward, achieving precise clamping and positioning of the valve at different positions on its outer wall. This high-precision clamping and positioning ensures the stability and accuracy of the valve during welding. The combined use of multiple pressure plates and limit plates not only clamps and positions the valve from multiple angles but also ensures the overall stability of the valve during welding. This multi-dimensional clamping method effectively prevents valve slippage during welding. The system ensures the stability and reliability of welding quality by preventing the valve from shifting or deforming. Since the number and position of the pressure plates can be adjusted according to the specific shape and size of the valve, the system is highly adaptable. Whether the valve is large or small, simple or complex, precise clamping and positioning can be achieved by adjusting the position and number of pressure plates. Through its efficient clamping and positioning mechanism, the system can quickly fix the valve in the correct position, providing a stable foundation for subsequent welding operations. This stability not only improves welding efficiency but also ensures the uniformity and consistency of welding quality, reducing welding defects and defective products. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the limiting disk in the present invention;

[0023] Figure 3 This is a schematic diagram of the bidirectional lead screw, transmission assembly, and rotating ring in this invention;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the welding mechanism in this invention;

[0026] Figure 6 This is a schematic diagram of the positioning frame, sliding block, laser welding gun, first spline rod, threaded rod and bonding wheel in the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the chassis, dual-axis motor, second gear, and positioning frame in this invention;

[0028] Figure 8 This is a schematic diagram of the structure of the sliding block, laser welding gun, adjusting motor, belt pulley transmission assembly, first spline rod, threaded rod, connecting block, and bonding wheel in this invention;

[0029] Figure 9This is a schematic diagram of the structure of the fixed ring, the second spline rod, the moving rod, the moving frame, and the grinding wheel in this invention;

[0030] Figure 10 This is a cross-sectional view of the threaded rod in this invention.

[0031] In the diagram: 1. Base; 2. Limiting plate; 3. Support seat; 4. Transmission assembly; 5. Welding mechanism; 21. First slide rod; 22. Two-way lead screw; 23. Moving seat; 24. Drive motor; 41. Positioning shaft; 42. Synchronous belt pulley transmission component; 43. First gear; 51. Fixing ring; 52. Arc-shaped slide groove; 53. Chassis; 54. Positioning frame; 55. Sliding block; 56. Laser welding gun; 57. Dual-axis motor; 58. Second gear; 59. First spline rod; 510. Threaded rod; 511. Fitting wheel; 512. Connecting block; 5 13. Adjusting motor; 514. Belt pulley transmission assembly; 515. First damping spring; 516. Second spline rod; 517. Third gear; 518. Tooth pattern; 519. Moving rod; 520. Moving frame; 521. Grinding wheel; 522. Bevel gear; 523. Limiting block; 524. Second damping spring; 525. Rotating ring; 526. Arc groove; 527. Telescopic rod; 528. Second slide rod; 529. Pressure plate; 530. First gear ring; 531. Second gear ring; 532. Third damping spring; 533. Arc rod. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Combining Figures 1-10 As shown, the present invention provides a technical solution: an automated valve welding equipment, including a base 1, with limit plates 2 on both the left and right sides of the top of the base 1, and two sets of support seats 3 fixedly assembled between the two sets of limit plates 2. On the top of the two support seats 3, a welding mechanism 5 specifically for welding valves is assembled.

[0034] The welding mechanism 5 includes a fixing ring 51, which is fixed to the top surface of the support base 3. An arc-shaped groove 52 is provided on the inner side wall of the fixing ring 51. A housing 53 is slidably assembled inside the arc-shaped groove 52 through a first slider. A laser welding gun 56 is provided on the inner end of the housing 53. A contact wheel 511 is provided on the side of the laser welding gun 56. The contact wheel 511 is used to control the distance between the laser welding gun 56 and the valve welding surface in real time. A second gear ring 531 is fixedly installed on one side of the inner wall of the fixing ring 51. A dual-axis motor 57 is fixedly installed inside the housing 53. The two output shafts of the dual-axis motor 57 are respectively fixedly connected to second gears 58. Both sides of the second gears 58 are meshed with the second gear ring 531 for transmission.

[0035] A positioning frame 54 is fixedly connected to the inner end face of the chassis 53. A sliding block 55 is vertically slidably mounted on the positioning frame 54. A third damping spring 532 is provided on both the left and right sides of the top of the sliding block 55. The top of the third damping spring 532 is fixedly connected to the top surface of the positioning frame 54. A first spline rod 59 is rotatably mounted on the lower end of the sliding block 55. A threaded rod 510 is slidably sleeved on the lower end of the first spline rod 59 along its own axis. A first damping spring 515 is provided on the inner side of the first spline rod 59 for moving the threaded rod 510 and the contact wheel 511 inward. Under the elastic force of the first damping spring 515, the contact wheel 511 always maintains a sliding state of contact with the valve. The contact wheel 511 is installed on the inner end of the threaded rod 510. A connecting block 512 is threadedly connected to the outer wall of the threaded rod 510. The connecting block 512 is slidably mounted on the positioning frame 54, and the inner end of the connecting block 512 is fixedly connected to the laser welding gun 56.

[0036] An adjusting motor 513 is provided on the inner end of the sliding block 55. The output end of the adjusting motor 513 is connected to the first spline rod 59 through the belt pulley transmission assembly 514. A second slider is fixedly connected to one side of the housing 53 through the arc rod 533 and slidably mounted on the arc groove 52. A second spline rod 516 is rotatably connected to the second slider. A third gear 517 is fixedly connected to the outer end of the second spline rod 516. The top of the fixing ring 51 is provided with teeth 518 that mesh with the third gear 517. A moving rod 519 is slidably connected to the inner end of the second spline rod 516. A limit block 523 is fixedly connected to the top of the moving rod 519. A second damping spring 524 is sleeved on the second spline rod 516 between the limit block 523 and the second slider.

[0037] The second slider is slidably connected to a movable frame 520 on one side, and the movable rod 519 is rotatably mounted on the movable frame 520. The inner end of the movable frame 520 is rotatably connected to a grinding wheel 521 through a rotating shaft, and the other end of the rotating shaft is connected to the movable rod 519 through a bevel gear 522.

[0038] A rotating ring 525 is fixedly connected to the outer end of the fixed ring 51. The rotating ring 525 has several arc-shaped grooves 526 arranged in a circular array. A second slide rod 528 is slidably connected in the arc-shaped grooves 526. A telescopic rod 527 is provided on the inner end of the second slide rod 528, and the telescopic rod 527 is slidably installed on the fixed ring 51. A pressure plate 529 is provided on the inner end of the telescopic rod 527. A fourth damping spring is provided in the telescopic rod 527 to maintain the stability of the structure and the accuracy of operation.

[0039] In an embodiment of the present invention, when the valve to be welded is in the position of the fixed ring 51 and is ready for welding, the synchronous rotation of the rotating ring 525 can be achieved through the cooperation of the bidirectional lead screw 22 and the transmission assembly 4. During this rotation, the rotating ring 525, with the help of the arc groove 526 and the second slide rod 528, can move the telescopic rod 527 and the pressure plate 529 into the fixed ring 51, thereby achieving precise clamping and positioning of different parts of the outer wall of the valve.

[0040] Under the elastic force of the third damping spring 532, the sliding block 55 is pushed inward, which in turn drives the first spline rod 59, the threaded rod 510, and the contact wheel 511 to move inward together. This allows the contact wheel 511 to make close contact with and slide against the outer wall of the valve. At the same time, the threaded rod 510, in conjunction with the connecting block 512, can accurately place the laser welding gun 56 at the welding position of the valve. Using the laser welding gun 56, high-precision welding operations can be performed on the valve. When it is necessary to adjust the distance between the laser welding gun 56 and the valve welding position, the adjusting motor 513 can be started, in conjunction with the belt pulley transmission assembly 5... 14. The first spline rod 59 rotates synchronously, which in turn drives the threaded rod 510 to rotate. Since the connecting block 512 slides on the positioning frame 54, the connecting block 512 will also move when the threaded rod 510 rotates, thereby realizing the up and down adjustment of the laser welding gun 56 to achieve precise adjustment of the welding position. During this process, the contact wheel 511 always maintains close contact with the outer wall of the valve. This design ensures that the laser welding gun 56 can maintain a stable welding distance during the welding process, avoiding the problem of uneven welding caused by changes in distance, and greatly improving the uniformity and consistency of welding quality.

[0041] Under the elastic force of the second damping spring 524, the moving rod 519, the moving frame 520 and the grinding wheel 521 will be pushed inward, so that the grinding wheel 521 can reach the welding position for grinding to remove impurities such as welding slag and oxide scale generated during the welding process.

[0042] When the laser welding gun 56 is performing welding operations, the dual-axis motor 57 is started, which enables the two second gears 58 to rotate synchronously. The second gears 58 cooperate with the second gear ring 531 on the inner side of the fixed ring 51, which can drive the machine box 53, the laser welding gun 56 and the bonding wheel 511 to rotate in a circle on the fixed ring 51. In this way, the laser welding gun 56 can perform comprehensive welding treatment on all positions of the valve.

[0043] During the circumferential rotation of the chassis 53, the second slider can be driven to rotate synchronously with the help of the arc rod 533. When the third gear 517 rotates, it can make the second spline rod 516 and the moving rod 519 rotate synchronously through the cooperation of the toothed teeth 518. The moving rod 519 then drives the grinding wheel 521 to rotate synchronously through the action of the bevel gear 522, thereby realizing the grinding treatment of the welded joint and effectively removing the welding slag, oxide scale and other impurities generated during the welding process.

[0044] Example 2: Combination Figure 2 As shown, based on Embodiment 1, three sets of sliding grooves are opened on the top of the base 1. A bidirectional lead screw 22 is cleverly installed on the inner wall of the sliding groove. A drive motor 24 is provided at one end of the bidirectional lead screw 22. This motor provides strong power for the rotation of the bidirectional lead screw 22, so that the bidirectional lead screw 22 can rotate efficiently.

[0045] On the inner walls of the slide grooves on both sides, first slide rods 21 are fixedly connected. The function of these first slide rods 21 is to support and move the seat 23, so that it can move smoothly on the first slide rods 21. The two sides of the double-acting screw 22 are connected to the moving seat 23 by threads. The moving seat 23 can move laterally along the threads of the double-acting screw 22. The two ends of the moving seat 23 are slidably mounted on the first slide rods 21. This design allows the moving seat 23 to slide freely on the first slide rods 21, making it more flexible.

[0046] In addition, the limit plate 2 is fixedly installed on the top of the movable seat 23. The function of the limit plate 2 is to fix the valve so that it will not slide or shift during transmission. This design makes the movement of the whole machine more stable and reliable, and greatly improves work efficiency.

[0047] In an embodiment of the present invention, by starting the drive motor 24, the bidirectional lead screw 22 can be rotated synchronously. During this process, the bidirectional lead screw 22, together with the two first slide rods 21, jointly pushes the two moving seats 23 to move synchronously inward or outward. In this way, the moving seats 23 can drive the limiting plate 2 to perform corresponding moving operations. At the same time, with the help of the two limiting plates 2, the valve to be welded can be effectively clamped and fixed.

[0048] After clamping and fixing are completed, the limit plate 2 and the valve can be precisely moved to the position of the welding mechanism 5 through the coordinated action of the drive motor 24, the bidirectional lead screw 22, the first slide bar 21 and the moving seat 23. Finally, the welding mechanism 5 can perform welding on the valve, thereby completing the entire welding process.

[0049] Example 3: Combination Figure 3 , Figure 4 As shown, based on Embodiment 2, a transmission assembly 4 is cleverly installed on the support base 3. This transmission assembly 4 mainly consists of several parts, including a positioning shaft 41, which is mounted on the support base 3 and can rotate freely. The outer end of the positioning shaft 41 is connected to the bidirectional lead screw 22 through a synchronous belt pulley transmission component 42. This connection method makes the transmission process both stable and efficient. On the inner end of the positioning shaft 41, a first gear 43 is fixedly connected. This gear plays a key role in the transmission process. In addition, a first gear ring 530 is set on the top of the rotating ring 525. This first gear ring 530 meshes with the first gear 43. Through this meshing connection, smooth switching and precise control can be achieved in the transmission process. The design of the entire transmission assembly 4 is both scientific and reasonable, which greatly improves the operating efficiency and stability of the equipment.

[0050] In an embodiment of the present invention, the bidirectional lead screw 22, during its rotation, works in conjunction with the synchronous belt pulley transmission component 42 to achieve synchronous rotation of the positioning shaft 41. During its rotation, the positioning shaft 41 drives the first gear 43 to rotate synchronously. Thus, the first gear 43 can cooperate with the first gear ring 530 to drive the rotating ring 525 to rotate. The rotating ring 525 has an arc-shaped groove 526. This design allows the arc-shaped groove 526 to cooperate with the second slide rod 528 to push the telescopic rod 527 and the pressure plate 529 to move inward. In this way, multiple pressure plates 529 can clamp and position the outer wall of the valve at different positions. Furthermore, multiple pressure plates 529 cooperate with the limiting plate 2 to clamp and position both sides of the valve. This can maintain the stability of the valve during the welding process and ensure the welding quality.

[0051] Working principle of automated valve welding equipment:

[0052] Step 1: Use two limiting plates 2 to clamp and fix the two valves to be welded. Then, drive the limiting plates 2 and the valves to move to the welding mechanism 5 through the drive motor 24, the double lead screw 22, the first slide bar 21, and the moving seat 23, so that the welding mechanism 5 can perform welding on the valves.

[0053] Step 2: When the bidirectional lead screw 22 rotates, it can drive the positioning shaft 41 to rotate synchronously in conjunction with the synchronous belt pulley transmission component 42. When the positioning shaft 41 rotates, it can drive the first gear 43 to rotate synchronously, so that the first gear 43, in conjunction with the first gear ring 530, drives the rotating ring 525 to rotate. Since the rotating ring 525 has an arc groove 526, the arc groove 526, in conjunction with the second slide rod 528, can drive the telescopic rod 527 and the pressure plate 529 to move inward, so that multiple pressure plates 529 can clamp and position the valve at different positions on the outer wall. In turn, multiple pressure plates 529, in conjunction with the limiting plate 2, can clamp and position the two sides of the valve, maintaining the stability of the valve during the welding process.

[0054] Step 3: By turning on the dual-axis motor 57, the two second gears 58 are driven to rotate synchronously. The second gears 58 cooperate with the second gear ring 531 on the inner side of the fixed ring 51, which can drive the machine box 53, laser welding gun 56 and bonding wheel 511 to rotate in a circle on the fixed ring 51, so that the laser welding gun 56 can perform welding on different positions of the valve.

[0055] When the chassis 53 rotates in a circular motion, it works in conjunction with the arc rod 533 to drive the second slider, the third gear 517, the second spline rod 516, the moving rod 519, the moving frame 520, and the grinding wheel 521 to rotate in a circular motion simultaneously. This allows the third gear 517 to rotate in a circular motion, working in conjunction with the tooth pattern 518 to drive the second spline rod 516 and the moving rod 519 to rotate in a synchronous motion. This allows the moving rod 519 to work in conjunction with the bevel gear 522 to drive the grinding wheel 521 to rotate in a synchronous motion. This allows the grinding wheel 521 to grind the welded area, thereby removing welding slag, oxide scale, and other impurities generated during the welding process.

[0056] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated valve welding device, comprising a base (1), characterized in that: The base (1) is provided with limit plates (2) on the top left and right sides. Two sets of support seats (3) are fixedly assembled between the two sets of limit plates (2). The top of the two sets of support seats (3) are jointly supported by a welding mechanism (5) for completing valve welding operations. The welding mechanism (5) includes a fixing ring (51), which is fixed to the top surface of the support base (3). An arc-shaped groove (52) is provided on the inner side wall of the fixing ring (51), and a housing (53) is slidably assembled inside the arc-shaped groove (52) through a first slider. The inner end of the chassis (53) is equipped with a laser welding gun (56), and a bonding wheel (511) is provided on the side of the laser welding gun (56). The bonding wheel (511) is used to control the distance between the laser welding gun (56) and the valve welding surface in real time. The inner wall of the fixed ring (51) is fixedly provided with a second gear ring (531), and a dual-axis motor (57) is fixedly installed inside the chassis (53). The two output shafts of the dual-axis motor (57) are respectively fixedly connected with second gears (58), and the second gears (58) on both sides are meshed with the second gear ring (531) for transmission.

2. The automated valve welding equipment according to claim 1, characterized in that: A positioning frame (54) is fixedly connected to the inner end face of the chassis (53). A sliding block (55) is vertically slidably mounted on the positioning frame (54). A third damping spring (532) is provided on both the left and right sides of the top of the sliding block (55). The top of the third damping spring (532) is fixedly connected to the top surface of the positioning frame (54). A first spline rod (59) is rotatably mounted on the lower end of the sliding block (55). A threaded rod (510) is slidably sleeved on the lower end of the first spline rod (59) along its own axial direction. A contact wheel (511) is rotatably mounted on the end of the threaded rod (510). A connecting block (512) is threadedly fitted on the outer wall of the threaded rod (510). The connecting block (512) is slidably mounted on the positioning frame (54). The inner end face of the connecting block (512) is fixedly connected to the laser welding gun (56).

3. The automated valve welding equipment according to claim 2, characterized in that: An adjusting motor (513) is fixedly mounted on the inner side of the sliding block (55), and the output shaft of the adjusting motor (513) is connected to the first spline rod (59) through a belt pulley transmission assembly (514).

4. The automated valve welding equipment according to claim 3, characterized in that: An arc-shaped rod (533) is fixedly connected to the outside of the chassis (53). A second slider is fixedly connected to the end of the arc-shaped rod (533). The second slider is slidably assembled inside the arc-shaped groove (52). A second spline rod (516) is rotatably connected to the second slider. A third gear (517) is fixedly assembled to the outer end of the second spline rod (516). The upper end face of the fixing ring (51) is integrally formed with teeth (518). The third gear (517) meshes with the teeth (518). A moving rod (519) is slidably sleeved on the inner end of the second spline rod (516) along the axial direction. A limit block (523) is fixedly connected to the top of the moving rod (519). A second damping spring (524) is provided between the limit block (523) and the second slider. The second damping spring (524) is sleeved on the outside of the second spline rod (516).

5. The automated valve welding equipment according to claim 4, characterized in that: The second slider is slidably mounted on a movable frame (520) on its side. The movable rod (519) is rotatably mounted inside the movable frame (520). The inner end of the movable frame (520) is rotatably mounted with a grinding wheel (521) via a rotating shaft. The other end of the rotating shaft of the grinding wheel (521) is equipped with a bevel gear (522). The bevel gear (522) meshes with the end of the movable rod (519) for transmission.

6. The automated valve welding equipment according to claim 5, characterized in that: A rotating ring (525) is coaxially fixedly connected to the outside of the fixed ring (51). The rotating ring (525) has several arc-shaped grooves (526) evenly opened in the circumferential direction. A second sliding rod (528) is slidably assembled inside the arc-shaped groove (526). A telescopic rod (527) is connected to the inner end of the second sliding rod (528). The telescopic rod (527) slides through the ring body of the fixed ring (51). A pressure plate (529) is fixed to the inner end of the telescopic rod (527).

7. The automated valve welding equipment according to claim 6, characterized in that: The base (1) has three sets of transverse sliding grooves on its top surface. A bidirectional lead screw (22) is rotatably mounted inside the middle set of the sliding grooves. A drive motor (24) is provided at one end of the bidirectional lead screw (22). A first slide rod (21) is fixedly mounted in the left and right sets of the sliding grooves respectively. A movable seat (23) is threaded on the left and right sections of the bidirectional lead screw (22) with reverse threads respectively. The two ends of the movable seat (23) are slidably sleeved on the outside of the first slide rod (21) on the same side. The limiting plate (2) is fixedly installed on the top surface of the movable seat (23).

8. The automated valve welding equipment according to claim 7, characterized in that: The support base (3) is equipped with a transmission assembly (4), which includes a positioning shaft (41). The positioning shaft (41) is rotatably mounted on the support base (3). The outer end of the positioning shaft (41) is connected to the bidirectional lead screw (22) via a synchronous belt pulley transmission component (42). The inner end of the positioning shaft (41) is fixedly equipped with a first gear (43). The outer edge of the upper end of the rotating ring (525) is integrally formed with a first gear ring (530). The first gear (43) and the first gear ring (530) are meshed and driven together.

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