A beveling forming device for large-diameter metal pipe fittings

Abstract

This utility model discloses a beveling forming device for large-diameter metal pipe fittings, including a drive assembly, a plasma cutting assembly, and a limiting assembly. The drive assembly includes a base driven by two sets of first hydraulic cylinders. A first roller and a second roller are mounted on the base. The first roller is driven by a first motor. The limiting assembly is used to clamp the pipe fitting. The plasma cutting assembly includes a housing driven by a first linear motor. A second linear motor is mounted on the housing. The slide of the second linear motor is connected to a rotating seat, and the rotating seat is connected to a cutting head. In this utility model, the cutting head achieves radial feed via a linear motor, and the rotation of the large-diameter metal pipe fitting is achieved through the drive assembly. Both only require independent speed adjustment to achieve beveling. When the pipe fitting rotates, the load distribution is uniform with minimal fluctuation. The rotation mechanism of the drive assembly is low-cost and easy to maintain, eliminating the need to rotate the cutting head and simplifying the structure.

Description

Technical Field

[0001] This utility model relates to the field of pipe beveling technology, specifically to a beveling equipment for large-diameter metal pipes. Background Technology

[0002] Large-diameter metal pipe fittings are typically used for fluid (such as liquids, gases, slurries, etc.) transportation. "Large diameter" generally refers to pipe fittings with a nominal diameter (DN) ≥ 500mm (specific standards vary by industry), and they are widely used in petroleum, chemical, power, water supply, gas, and marine engineering fields. Beveling of large-diameter metal pipe fittings is a crucial process before welding, directly affecting welding quality and efficiency. Its core purpose is to ensure full fusion at the weld root, avoid defects such as incomplete fusion and slag inclusions, and control welding deformation by processing the specific angle and shape of the pipe fitting end face.

[0003] When processing pipe beveling, the pipe is usually fixed and the cutting head is rotated. The cutting head needs to make a circular motion around the pipe axis and also needs to feed radially. The cutting head assembly has a large inertia when rotating, which can easily lead to angular deviation. In addition, a special rotating mechanism needs to be customized, which increases the equipment cost. Utility Model Content

[0004] The purpose of this invention is to provide a beveling forming device for large-diameter metal pipe fittings to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a beveling forming device for large-diameter metal pipe fittings, comprising a driving assembly, a plasma cutting assembly, and a limiting assembly. The driving assembly includes a base driven by two sets of first hydraulic cylinders. A first roller and a second roller are mounted on the base. The first roller is driven by a first motor. The limiting assembly is used to clamp the pipe fittings. The plasma cutting assembly includes a housing driven by a first linear motor. A second linear motor is mounted on the housing. The slide of the second linear motor is connected to a rotating seat, and the rotating seat is connected to a cutting head.

[0006] In this configuration, one end of the first roller is fixedly connected to a first synchronous pulley, and one end of the second roller is fixedly connected to a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0007] The first and second rollers are both connected to the base via bearings, and the output shaft of the first motor is fixedly connected to the first synchronous pulley.

[0008] The two sets of first hydraulic cylinders are located on both sides of the lower end of the base, and the first hydraulic cylinders are connected to the hydraulic drive system through oil pipes.

[0009] The limiting component includes a stand, and a second hydraulic cylinder is installed at the top of the stand. One end of the push rod of the second hydraulic cylinder is connected to a pressure roller.

[0010] The second hydraulic cylinder is connected to the hydraulic drive system via an oil pipe.

[0011] The rotating base is equipped with a second motor, the output shaft of which is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the cutting head.

[0012] The first linear motor is installed at the lower end of the chassis.

[0013] Metal tubing is placed on the drive assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The cutting head of this utility model achieves radial feed through a linear motor, and the rotation of the large-diameter metal pipe is achieved through a drive component. Both only need to be adjusted independently to achieve beveling. When the pipe rotates, the load is evenly distributed with small fluctuations. The rotation mechanism of the drive component is low in cost and easy to maintain. There is no need to rotate the cutting head, which simplifies the equipment structure, improves the feed stability of the cutting head, and is less likely to cause angular deviation, thereby improving the beveling quality of the large-diameter metal pipe.

[0015] 2. This utility model uses a limiting component to press the pipe fitting, which limits the pipe fitting to prevent horizontal movement without affecting its circular motion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram illustrating the use of this utility model; Figure 3 This is a schematic diagram of the structure of the drive component of this utility model; Figure 4 This is a schematic diagram of the structure of the plasma cutting assembly of this utility model.

[0017] In the diagram: 1. Drive assembly; 2. Plasma cutting assembly; 3. Limiting assembly; 11. Base; 12. First hydraulic cylinder; 13. First roller; 14. Second roller; 15. First motor; 16. First synchronous pulley; 17. Second synchronous pulley; 18. Synchronous belt; 21. Machine housing; 22. First linear motor; 23. Second linear motor; 24. Rotary seat; 25. Second motor; 26. Cutting head; 31. Stand; 32. Second hydraulic cylinder; 33. Pressure roller. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a beveling equipment for large-diameter metal pipe fittings, including a drive assembly 1, a plasma cutting assembly 2, and a limiting assembly 3. The drive assembly 1 includes a base 11, which is driven by two sets of first hydraulic cylinders 12. A first roller 13 and a second roller 14 are installed on the base 11. The first roller 13 is driven by a first motor 15. The limiting assembly 3 is used to press the pipe fittings. The plasma cutting assembly 2 includes a housing 21, which is driven by a first linear motor 22. A second linear motor 23 is installed on the housing 21. The slide of the second linear motor 23 is connected to a rotating seat 24, and the rotating seat 24 is connected to a cutting head 26.

[0020] like Figure 2 As shown, a large-diameter metal pipe to be beveled is placed on the drive assembly 1. The first hydraulic cylinder 12 drives the base 11 to move axially, adjusting the height of the base 11, that is, adjusting the center of the large-diameter metal pipe. The pipe is pressed by the limiting assembly 3, which limits the pipe without affecting its circular motion and prevents it from moving horizontally. The first motor 15 drives the first roller 13 at one end to rotate. The first roller 13 is driven by the synchronous pulley and synchronous belt 18 to drive the second roller 14 to rotate synchronously. Friction is generated at the contact point between the roller and the pipe. The pipe rotates under the action of friction, thereby driving the pipe to make circular motion.

[0021] The rotating seat 24 can adjust the angle of the cutting head 26. The angle of the cutting head 26 can be adjusted according to the beveling requirements. During the beveling process, the cutting head 26 is radially fed by a linear motor. The rotation of the large-diameter metal pipe is achieved by the drive assembly 1. The two only need to be independently adjusted to achieve beveling. When the large-diameter metal pipe rotates, the load is evenly distributed and the fluctuation is small. The rotation mechanism of the drive assembly 1 has low cost and is easy to maintain. There is no need to rotate the cutting head 26, which simplifies the equipment structure, improves the feed stability of the cutting head 26, and is less likely to cause angle deviation, thereby improving the beveling quality of the large-diameter metal pipe.

[0022] The plasma cutting assembly 2 utilizes a high-efficiency cutting technology that melts metal with a high-temperature plasma arc and blows away molten slag to process the bevel of large-diameter metal pipe fittings. The plasma cutting assembly 2 generates a high-temperature plasma arc through a plasma arc generator, compressing the arc into a high-energy-density plasma flow, instantly melting the metal on the end face of the pipe fitting. At the same time, high-speed compressed gas blows the molten slag away from the cut, forming a continuous and regular bevel.

[0023] One end of the first roller 13 is fixedly connected to the first synchronous pulley 16, and one end of the second roller 14 is fixedly connected to the second synchronous pulley 17. The first synchronous pulley 16 and the second synchronous pulley 17 are connected by a synchronous belt 18.

[0024] The first roller 13 and the second roller 14 are both connected to the base 11 by bearings, and the output shaft of the first motor 15 is fixedly connected to the first synchronous pulley 16.

[0025] When the first motor 15 is working, it drives the first synchronous pulley 16 to rotate. The first synchronous pulley 16 drives the first roller 13 to rotate relative to the base 11. At the same time, the first synchronous pulley 16 drives the second synchronous pulley 17 to rotate via the synchronous belt 18. The second synchronous pulley 17 drives the second roller 14 to rotate relative to the base 11.

[0026] Among them, the two sets of first hydraulic cylinders 12 are located on both sides of the lower end of the base 11. The first hydraulic cylinders 12 are connected to the hydraulic drive system through oil pipes, and high-pressure oil is transmitted through the oil pipes to drive the piston of the first hydraulic cylinder 12 to move and adjust the height position of the pipe.

[0027] The limiting component 3 includes a frame 31, with a second hydraulic cylinder 32 installed at the top of the frame 31. One end of the push rod of the second hydraulic cylinder 32 is connected to a pressure roller 33. The roller body of the pressure roller 33 is connected to the frame body through a bearing. When the second hydraulic cylinder 32 works, it drives the pressure roller 33 at one end to move. The pressure roller 33 presses the pipe and limits the pipe without affecting its circumferential movement, thus preventing the pipe from moving horizontally.

[0028] The second hydraulic cylinder 32 is connected to the hydraulic drive system through an oil pipe, and high-pressure oil is transmitted through the oil pipe to drive the piston of the second hydraulic cylinder 32 to move.

[0029] The rotating base 24 is equipped with a second motor 25. The output shaft of the second motor 25 is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the cutting head 26. When the second motor 25 is working, it drives the rotating shaft at one end to rotate, and the rotating shaft drives the cutting head 26 to move, thereby adjusting the angle of the cutting head 26.

[0030] The first linear motor 22 is installed at the lower end of the housing 21. When the first linear motor 22 is working, it drives the housing 21 to move horizontally and adjusts the horizontal position of the cutting head 26. When the second linear motor 23 is working, it drives the cutting head 26 to move axially and adjusts the height position of the cutting head 26.

[0031] Among them, a metal pipe is placed on the drive component 1, and the pipe is driven to rotate by the drive component 1.

[0032] Working principle: The large-diameter metal pipe to be beveling is placed on the drive assembly 1 by the hoisting equipment. The first hydraulic cylinder 12 adjusts the center of the pipe and the limit assembly 3 presses the pipe, limiting its movement without affecting its circular motion and preventing horizontal movement. According to the beveling requirements, the position of the cutting head 26 is adjusted by the linear motor and the angle of the cutting head 26 is adjusted by the rotating seat 24. The first motor 15 drives the first roller 13 at one end to rotate. The first roller 13 is driven by the synchronous pulley and synchronous belt 18 to drive the second roller 14 to rotate synchronously. Friction is generated at the contact point between the roller and the pipe, and the pipe rotates under the action of friction, thus driving the pipe to make circular motion. The plasma cutting assembly 2 uses high-temperature plasma arc to melt the metal and blow away the slag to process the beveling of the large-diameter metal pipe. The cutting head 26 is radially fed by the linear motor, and the rotation of the large-diameter metal pipe is achieved by the drive assembly 1. The two only need to be adjusted independently to achieve beveling.

[0033] 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 beveling forming device for large-diameter metal pipe fittings, comprising a driving assembly (1), a plasma cutting assembly (2), and a limiting assembly (3), characterized in that: The drive assembly (1) includes a base (11), which is driven by two sets of first hydraulic cylinders (12). A first roller (13) and a second roller (14) are mounted on the base (11). The first roller (13) is driven by a first motor (15). The limiting assembly (3) is used to clamp the pipe fitting. The plasma cutting assembly (2) includes a chassis (21), which is driven by a first linear motor (22). A second linear motor (23) is mounted on the chassis (21). The slide of the second linear motor (23) is connected to a rotating seat (24). The rotating seat (24) is connected to a cutting head (26).

2. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: One end of the first roller (13) is fixedly connected to the first synchronous pulley (16), and one end of the second roller (14) is fixedly connected to the second synchronous pulley (17). The first synchronous pulley (16) and the second synchronous pulley (17) are connected by a synchronous belt (18).

3. The beveling equipment for large-diameter metal pipe fittings according to claim 2, characterized in that: The first roller (13) and the second roller (14) are both connected to the base (11) by bearings, and the output shaft of the first motor (15) is fixedly connected to the first synchronous pulley (16).

4. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: The two sets of first hydraulic cylinders (12) are located on both sides of the lower end of the base (11), and the first hydraulic cylinders (12) are connected to the hydraulic drive system through oil pipes.

5. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: The limiting component (3) includes a stand (31), and a second hydraulic cylinder (32) is installed at the top of the stand (31). One end of the push rod of the second hydraulic cylinder (32) is connected to the pressure roller (33).

6. The beveling equipment for large-diameter metal pipe fittings according to claim 5, characterized in that: The second hydraulic cylinder (32) is connected to the hydraulic drive system via an oil pipe.

7. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: A second motor (25) is mounted on the rotating base (24). The output shaft of the second motor (25) is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the cutting head (26).

8. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: The first linear motor (22) is mounted on the lower end of the housing (21).

9. The beveling equipment for large-diameter metal pipe fittings according to claim 1, characterized in that: Metal pipes are placed on the drive assembly (1).

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