Movable multi-nozzle welding equipment

Abstract

The invention relates to the technical field of welding equipment, and discloses movable multi-oil-nozzle welding equipment which comprises a lathe bed, a spindle box assembly, a tailstock mechanism, a material supporting base, a stand column, a wire feeder assembly, a vertical sliding rail and a welding gun positioning system. By means of head-tail cooperative clamping and multi-axis linkage design, high-coaxiality clamping of workpieces and accurate positioning of a welding gun are achieved; the V-shaped bracket automatically avoids, the wire feeder supplies wires at a constant speed, the welding gun can be finely adjusted in real time, and continuous and automatic girth welding of the multi-oil-nozzle workpiece is completed. According to the method, the welding efficiency and quality can be remarkably improved, the method adapts to various workpiece shapes, manual intervention is reduced, and high universality and expansibility are achieved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically a mobile multi-nozzle welding device. Background Technology

[0002] In modern industrial manufacturing, welding technology, as a key processing method, is widely used in the production and assembly of various metal structural components. Especially in welding scenarios involving multi-nozzle workpieces, the degree of automation and positioning accuracy of welding equipment directly affects product quality and production efficiency. Traditional welding equipment typically employs a fixed structure, with welding torch position adjustment relying on manual operation or simple mechanical movement mechanisms. This approach has several shortcomings. For example, in the welding of multi-nozzle workpieces, due to the complex shape of the workpiece and uneven distribution of welding points, traditional equipment struggles to achieve rapid and precise welding torch positioning, leading to unstable welding quality and even welding defects. Furthermore, the clamping methods of traditional equipment are often inflexible and cannot adapt to workpieces of different sizes and shapes, further limiting their application scope.

[0003] On the other hand, existing welding equipment also faces significant technical bottlenecks in workpiece rotation control and coaxiality assurance. During welding, the workpiece's rotational speed and coaxiality have a crucial impact on welding quality. Traditional equipment typically relies on a single clamping mechanism, which cannot achieve coordinated positioning at both ends, easily causing workpiece misalignment or vibration, thus affecting the welding effect. Furthermore, the coordination between the wire feeding system and the welding power source in existing equipment is not perfect, often resulting in uneven wire feeding speed or poor arc stability, further reducing welding quality.

[0004] To address the aforementioned problems, there is an urgent need for a mobile multi-nozzle welding device capable of high-precision positioning, flexible clamping, and stable welding. This device needs to possess multi-degree-of-freedom welding torch adjustment capabilities to meet the welding requirements of complex workpieces; simultaneously, it must ensure the stability and coaxiality of the workpiece during the welding process through optimized clamping mechanisms and rotation control systems. Furthermore, the device should integrate an efficient wire feeding system and intelligent welding control functions to improve welding efficiency and quality. Based on this technological background, this invention proposes an innovative mobile multi-nozzle welding device, aiming to overcome the shortcomings of existing technologies and provide a more efficient and reliable welding solution for industrial manufacturing. Summary of the Invention

[0005] This invention addresses the problems of low positioning accuracy, insufficient automation, and poor adaptability in existing welding equipment for circumferential welding of multi-nozzle workpieces, and proposes a mobile multi-nozzle welding device. The device, through a multi-axis linkage system and modular design, achieves precise workpiece clamping, accurate welding torch positioning, and continuous automated welding of multi-nozzle workpieces.

[0006] This invention provides a mobile multi-nozzle welding equipment, including a bed, a spindle box assembly, a tailstock mechanism, a material support base, a column, a wire feeder assembly, a vertical slide rail, and a welding torch positioning system, wherein: The material support base is mounted on the machine bed and has two V-shaped brackets for supporting cylindrical or multi-nozzle workpieces. The V-shaped brackets are driven by a pneumatic telescopic rod to achieve lifting and lowering motion, thus completing the initial centering and clearance functions of the workpiece. The spindle box assembly has a built-in motor and reduction mechanism, and its output end is equipped with a three-jaw chuck. The three-jaw chuck clamps one end of the workpiece by rotating and retracting, while providing uniform rotational power to the workpiece. The tailstock mechanism includes a tailstock, a clamping plate, and a cylinder mounted above the tailstock. The output end of the cylinder is rotatably connected to the clamping plate, and its output end pushes the clamping plate to press against the other end of the workpiece, thereby working in conjunction with the three-jaw chuck to achieve precise positioning and clamping of the workpiece. The column is mounted on a transverse slide and is driven by a servo motor and a lead screw to move along the transverse slide rail of the machine bed, roughly positioning the welding torch to the approximate position of the target nozzle.

[0007] Furthermore, the welding torch positioning system includes a linear housing, an L-shaped vertical frame, a horizontal slider, a vertical retainer, a vertical slider, and related driving components. Specifically: the linear housing is fixed to the L-shaped vertical frame; a first motor drives the horizontal lead screw to rotate, causing the horizontal slider meshing with it to move precisely in a straight line within the linear housing, thereby achieving precise positioning of the welding torch in the horizontal direction; the vertical retainer is mounted on the horizontal slider; a second motor drives the vertical lead screw to rotate, causing the vertical slider meshing with it to move up and down; a guide rod is used to prevent the vertical slider from rotating, ensuring smooth movement; the vertical slider is ultimately connected to and fixes the welding torch through an L-shaped connecting frame and a fixing plate, achieving precise positioning of the welding torch in the vertical direction.

[0008] Specifically, the wire feeder assembly is mounted on an L-shaped vertical frame, stores the welding wire, and feeds the welding wire to the front end of the welding torch at a constant speed through a hose. During the welding process, the spindle box assembly drives the workpiece to rotate at a uniform speed, and at the same time, the welding power supply is turned on, generating an electric arc between the welding torch and the workpiece, melting the base material and the welding wire to form a molten pool. The welding of a circumferential seam on an oil nozzle is completed in one rotation of the workpiece. During the welding process, the first motor and the second motor control the position of the welding torch to make real-time fine adjustments or swings according to a preset program to optimize the welding quality.

[0009] Furthermore, the equipment also includes a displacement and completion control system, wherein: after one nozzle is welded, the workpiece stops rotating, and the control system instructs the column to move along the transverse slide rail to the preset position of the next nozzle; the above welding torch positioning and welding steps are repeated until all nozzles are welded; after all welding is completed, the cylinder retracts, driving the clamping plate to retract and release the workpiece; subsequently, the pneumatic telescopic rod extends, causing the V-shaped bracket to rise and support the workpiece, and the operator removes the welded workpiece, completing the entire cycle.

[0010] Furthermore, the vertical slide rail is installed on the front side of the column, and a vertical slide block slides on it. The L-shaped vertical frame is connected to the vertical slide block, providing it with vertical movement capability. The design of the vertical slide rail and slide block enhances the vertical positioning flexibility of the welding torch, enabling the welding torch to adapt to welding requirements at different heights. The vertical slide rail adopts a high-precision ball bearing guide to reduce friction and improve movement stability.

[0011] The beneficial effects of this invention are as follows: by using a head-and-tail coordinated clamping and multi-axis linkage system, high coaxiality and stability of the workpiece are achieved during the welding process; by using precise positioning of the welding torch and automated wire feeding combined with the welding process and real-time fine-tuning function, welding efficiency and quality are significantly improved; the equipment has strong versatility and expandability, and is suitable for multi-nozzle workpieces of various shapes and sizes; the high degree of automation reduces manual intervention, lowers labor intensity, and thus improves overall production efficiency.

[0012] Furthermore, the design of the material support base and V-shaped bracket not only provides stable initial support, but also achieves automatic avoidance function through pneumatic telescopic rod, avoiding interference problems; the synergistic effect of the spindle box assembly and tailstock mechanism ensures high-precision positioning of the workpiece during rotation, laying the foundation for high-quality welding; the multi-axis linkage design of the welding torch positioning system enables the welding torch to achieve precise positioning in multiple directions, meeting the needs of complex welding paths.

[0013] In summary, this invention provides a highly efficient, precise, and stable mobile multi-nozzle welding equipment through specific structural design and multi-axis linkage technology. It can be widely used in fields such as machinery manufacturing and petrochemicals, and solves many technical problems existing in the prior art. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the left side structure of the present invention; Figure 4 This is a schematic diagram of the structure of the horizontal slider and the vertical retainer in this invention.

[0015] The components are as follows: 1. Bed; 2. Spindle box assembly; 3. Column; 4. Three-jaw chuck; 5. Transverse slide rail; 6. Transverse slide block; 7. Tailstock; 8. Cylinder; 9. Clamping plate; 10. Material support base; 11. Pneumatic telescopic rod; 12. V-shaped bracket; 13. Vertical slide rail; 14. Vertical slide block; 15. L-shaped vertical frame; 16. Wire feeder assembly; 17. Linear housing; 18. Transverse lead screw; 19. Transverse slider; 20. First motor; 21. Vertical retainer; 22. Vertical lead screw; 23. Vertical slider; 24. Second motor; 25. Guide rod; 26. L-shaped connecting frame; 27. Fixing plate; 28. Welding torch. Detailed Implementation

[0016] The technical solution of the present invention will now be clearly and completely described 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.

[0017] This invention relates to a mobile multi-nozzle welding device, combined with an attached... Figure 1 To be continued Figure 4 The specific implementation method is described in detail. The equipment mainly consists of a bed 1, a spindle box assembly 2, a tailstock mechanism, a material support base 10, a column 3, and a welding torch positioning system. The components work together through modular design to complete the automated welding of multi-nozzle workpieces.

[0018] In the specific implementation process, cylindrical or multi-nozzle workpieces are first placed on two V-shaped brackets 12 on the support base 10. The design of the V-shaped brackets 12 ensures the initial centering and stability of the workpiece. The support base 10 is fixed to the bed 1, and a pneumatic telescopic rod 11 is provided below it to drive the V-shaped brackets 12 to move up and down. After the workpiece is placed, the pneumatic telescopic rod 11 is extended, allowing the V-shaped brackets 12 to support the workpiece and complete the initial centering. Subsequently, the spindle box assembly 2 is started, and its built-in motor and reduction mechanism drive the three-jaw chuck 4 to rotate and retract, clamping one end of the workpiece. The clamping action of the three-jaw chuck 4 not only fixes the workpiece, but also provides power support for the subsequent uniform rotation of the workpiece. At the same time, the clamping plate 9 moves towards the workpiece under the push of the cylinder 8, and the clamping plate 9 presses against the other end of the workpiece, realizing precise positioning and clamping through the coordinated action of the head and tailstocks. This clamping method significantly improves the coaxiality and stability of the workpiece during rotation. After clamping is completed, the pneumatic telescopic rod 11 is retracted, which drives the V-shaped bracket 12 to move downward, so that it is lower than the welding area of ​​the workpiece, so as to avoid interfering with the movement of the welding torch 28.

[0019] Next, we proceed to the welding torch positioning stage. The entire welding torch positioning system is mounted on column 3, which is then mounted on the transverse slide rail 5 of bed 1 via a transverse slide block 6. Through a drive system consisting of a servo motor and a lead screw, column 3 can perform coarse transverse positioning along the transverse slide rail 5, quickly moving the welding torch 28 to the approximate position of the target nozzle. (See attached image) Figure 1 As shown, the lateral precision positioning of the welding torch positioning system is achieved by driving the first motor 20. The first motor 20 is typically a stepper or servo motor, and its output shaft is connected to the lateral lead screw 18. When the lateral lead screw 18 rotates, the lateral slider 19 meshing with it makes precise linear motion within the linear housing 17, thereby driving the L-shaped vertical frame 15 to move left and right, completing the precise lateral positioning of the welding torch 28. The vertical precision positioning of the welding torch 28 is achieved through the vertical retainer 21. The vertical retainer 21 is mounted on the lateral slider 19, and the second motor 24 drives the vertical lead screw 22 to rotate, causing the vertical slider 23 meshing with the vertical lead screw 22 to move up and down accordingly. The guide rod 25 prevents the vertical slider 23 from rotating, ensuring its smooth movement. The vertical slider 23 is finally connected to and fixes the welding torch 28 through the L-shaped connecting frame 26 and the fixing plate 27, achieving the precise vertical positioning of the welding torch 28.

[0020] The wire feeder assembly 16 is mounted on the L-shaped vertical frame 15 and is used to store the welding wire and feed it to the front end of the welding torch 28 at a constant speed through a hose. When the welding torch 28 is in position, the spindle box assembly 2 drives the workpiece to rotate at a uniform speed, and simultaneously the welding power supply is activated, generating an electric arc between the welding torch 28 and the workpiece. This arc melts the base material and the welding wire fed by the wire feeder assembly 16, forming a molten pool. One rotation of the workpiece completes the welding of a circumferential seam on an oil nozzle. During the welding process, the first motor 20 and the second motor 24 perform real-time fine-tuning or oscillation of the position of the welding torch 28 according to a preset program to optimize the welding quality. (See attached image) Figure 4 As shown, the structural design of the horizontal slider 19 and the vertical retainer 21 enables the welding torch 28 to achieve high-precision positioning in both the horizontal and vertical directions, meeting the needs of complex welding paths.

[0021] After welding a single nozzle, the control system instructs column 3 to move along transverse slide rail 5 to the preset position of the next nozzle. The welding torch positioning and welding steps are repeated until all nozzles are welded. After all welding is complete, cylinder 8 retracts, causing tailstock 7 and clamping plate 9 to retract and release the workpiece. Subsequently, pneumatic telescopic rod 11 extends, causing V-shaped bracket 12 to rise and support the workpiece, allowing the operator to remove the welded workpiece, completing the entire cycle. (See attached...) Figure 2 and attached Figure 3As shown, the vertical slide rail 13 is installed on the front side of the column 3, and a vertical slide block 14 slides on it. The L-shaped vertical frame 15 is connected to the vertical slide block 14, providing it with vertical movement capability. The vertical slide rail 13 adopts a high-precision ball bearing guide rail, which reduces friction and improves the smoothness of movement, further enhancing the vertical positioning flexibility of the welding torch 28.

[0022] This equipment has specific applications in the machinery manufacturing and petrochemical industries. For example, when machining multi-nozzle joints in oil drilling equipment, traditional welding methods require frequent manual adjustments of the welding torch position, resulting in low efficiency and difficulty in guaranteeing accuracy. This invention achieves precise positioning of the welding torch through an automated control system, combined with real-time fine-tuning capabilities, significantly improving welding efficiency and quality.

[0023] In summary, this invention, through specific structural design and multi-axis linkage technology, achieves high coaxiality and stability of the workpiece during the welding process. Combined with automated wire feeding and welding processes, as well as real-time fine-tuning functions, it solves many technical problems existing in the prior art and has broad application prospects.

[0024] 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. A mobile multi-nozzle welding machine, comprising a bed (1), a spindle box assembly (2), a tailstock mechanism, a material support base (10), a column (3), a wire feeder assembly (16), a vertical slide rail (13), and a welding torch positioning system, characterized in that: The material support base (10) is installed on the bed (1), and two V-shaped brackets (12) are provided on it. The V-shaped brackets (12) are driven by a pneumatic telescopic rod (11) to achieve lifting and lowering movement. The spindle box assembly (2) has a built-in motor and reduction mechanism. Its output end is equipped with a three-jaw chuck (4). The three-jaw chuck (4) is used to clamp one end of the workpiece and provide uniform rotation power. The tailstock mechanism includes a tailstock (7), a clamping plate (9), and a cylinder (8) installed above the tailstock (7). The output end of the cylinder (8) is rotatably connected to the clamping plate (9). Its output end pushes the clamping plate (9) to press against the other end of the workpiece. The column (3) is installed on the transverse slide (6) and is driven by a servo motor and a lead screw to move along the transverse slide rail (5) of the bed.

2. The mobile multi-nozzle welding equipment according to claim 1, characterized in that, The welding torch positioning system includes a linear housing (17), an L-shaped vertical frame (15), a horizontal slider (19), a vertical retainer (21), a vertical slider (23), and related driving components. The first motor (20) drives the horizontal lead screw (18) to rotate, thereby causing the horizontal slider (19) to move linearly within the linear housing (17) to achieve the positioning of the welding torch (28) in the horizontal direction.

3. The mobile multi-nozzle welding equipment according to claim 2, characterized in that, The vertical retainer (21) is mounted on the horizontal slider (19). The second motor (24) drives the vertical lead screw (22) to rotate, causing the vertical slider (23) to move up and down. The guide rod (25) is used to prevent the vertical slider (23) from rotating.

4. The mobile multi-nozzle welding equipment according to claim 1, characterized in that, The wire feeder assembly (16) is mounted on an L-shaped vertical frame (15) and feeds the welding wire to the front end of the welding gun (28) through a hose.

5. A mobile multi-nozzle welding device according to claim 4, characterized in that, The vertical slide rail (13) is installed on the front side of the column (3), and a vertical slide block (14) slides on it. The L-shaped vertical frame (15) is connected to the vertical slide block (14).

6. A mobile multi-nozzle welding device according to claim 1, characterized in that, When the cylinder (8) of the tailstock mechanism pushes the clamping plate (9) to move, the clamping plate (9) and the spindle box assembly (2) work together to achieve the positioning and clamping of the workpiece.

7. A mobile multi-nozzle welding device according to claim 1, characterized in that, The two V-shaped brackets (12) of the material support base (10) are driven by a pneumatic telescopic rod (11) to achieve lifting and lowering motion to complete the initial centering and avoidance functions of the workpiece.

8. A mobile multi-nozzle welding device according to claim 1, characterized in that, The column (3) is mounted on the transverse slide rail (5) of the bed (1) via a transverse slide block (6) and moves along the transverse slide rail (5) via a servo motor and lead screw drive.

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