Circular tube intersecting line cutting and welding device

Abstract

The utility model discloses a circular tube intersecting line cutting and welding device which is applied to the technical field of circular tube processing and comprises a machine base, a linear bearing is connected to the top of the machine base in a bolted mode, a rotating ring is rotatably connected to the interior of the linear bearing in a penetrating mode, and a transmission shaft is slidably connected to the interior of the rotating ring in a penetrating mode. A strip-shaped clamping block connected with the rotating ring in a clamping mode is welded to the top of the transmission shaft, and a rotating cylinder and a mounting base are welded to the two ends of the transmission shaft correspondingly. The rotating cylinder is driven to rotate by rotating the transmission shaft, so that the jacking column slides in the curve sliding groove under the acting force. Therefore, the transmission shaft can drive the circular tube clamped inside the three-jaw chuck to generate a motion track consistent with a line groove inside the curve sliding groove, an intersecting curve of the circular tube is re-engraved, and then a motion line needed by cutting and welding is achieved. The problems that manual cutting and welding are low in precision and low in speed, and numerical control equipment is large in size, complex in operation, limited by the environment and high in cost are solved.

Description

Technical Field

[0001] This utility model belongs to the field of round tube processing technology, and specifically relates to a round tube intersection cutting and welding device. Background Technology

[0002] Since the intersection of two circular tubes is not a plane, but rather one or more spatial curves, this is called the intersection line. Intersection line cutting and welding involves cutting or seamlessly welding the circular tubes along these curves.

[0003] Currently, Chinese utility model patent CN217889822U discloses a plasma-insulated circular tube cutting machine for intersecting lines. Traditional methods for cutting intersecting lines of circular tubes are limited, relying mainly on manual cutting or simple mechanical cutting. These methods suffer from low cutting accuracy, low efficiency, and high labor intensity. Especially when dealing with complex-shaped intersecting lines, traditional methods struggle to guarantee cutting quality and consistency. With the development of CNC technology, CNC intersecting line cutting machines have gradually become mainstream. These machines, controlled by digital programs, can achieve high-precision and high-efficiency cutting. However, existing technologies still have some shortcomings, such as complex equipment, inconvenient operation, and very high overall cost, thus limiting their practicality. Utility Model Content

[0004] The purpose of this utility model is to provide a circular tube intersection line cutting and welding device. Its advantages are that it solves the problems of low precision and slow speed of manual cutting and welding, and that CNC equipment is bulky, inconvenient to carry, complicated to operate and costly. It has the advantages of simple structure, low cost, easy to carry, and can also ensure the processing quality of the workpiece.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a circular tube intersecting line cutting and welding device, including a base, a linear bearing bolted to the top of the base, a rotating ring rotatably connected through the interior of the linear bearing, a drive shaft slidably connected through the interior of the rotating ring, a strip-shaped locking block welded to the top of the drive shaft and engaging with the rotating ring, a rotating cylinder and a mounting seat welded to both ends of the drive shaft respectively, a curved groove formed on the surface of the rotating cylinder, a top column bolted to the top of the base near the rotating cylinder, the top of the top column slidably connected to the interior of the curved groove, and a three-jaw chuck bolted to the end of the mounting seat away from the linear bearing.

[0006] The above technical solution utilizes a rotating drive shaft to rotate a cylindrical column, causing the top column to slide within a curved groove. This drives the drive shaft to move the circular tube held in the three-jaw chuck along a trajectory consistent with the groove's internal path, thus replicating the tube's intersection curve and achieving the necessary motion path for cutting and welding. This solution overcomes the problems of low precision and slow speed in manual cutting and welding, and the bulky, complex, environmentally dependent, and costly nature of CNC equipment, making it easier to use. The welding torch is linearly moved and adjusted via a sliding plate, with the plate fixed by rotating a limit bolt. This allows for fine-tuning of the cutting and welding positions along the tube's intersection curve as needed, improving the device's practicality.

[0007] The present invention is further configured such that: an L-shaped support plate is bolted to the top of the linear bearing near the three-jaw chuck; a sliding plate is slidably connected through the interior of the L-shaped support plate; a welding torch is bolted to the end of the sliding plate away from the L-shaped support plate; and a limiting bolt that engages with the sliding plate is threaded through the end of the L-shaped support plate near the welding torch.

[0008] By adopting the above technical solution, the position of cutting and welding the intersecting curve of the circular tube can be finely adjusted as needed, thereby improving the practicality of the device.

[0009] The present invention is further configured such that wear-resistant lining plates are welded to the inner surface of the curved chute and the top of the top column.

[0010] By adopting the above technical solution, the wear caused by the top of the column sliding inside the curved groove is reduced, thereby reducing the deviation of the trajectory of the drive shaft driving the circular tube intersection line.

[0011] The present invention is further configured such that: a handwheel is welded to one end of the rotating cylinder away from the transmission shaft, and a handle is welded to the bottom of the handwheel.

[0012] The above technical solution facilitates the rotation of the cylinder and drive shaft by manually turning the handle and handwheel, enabling the cutting and welding of the intersection line of the circular tube.

[0013] The present invention is further configured such that: the handwheel can also be a geared motor, and the output shaft of the geared motor is bolted to the end of the rotating cylinder away from the transmission shaft.

[0014] By adopting the above technical solution, a motor drive can be installed according to actual production needs, which can be applied to the cutting of some large round tubes and avoid the excessive effort of manual rotation.

[0015] The present invention is further configured such that: the top and bottom of the L-shaped support plate are provided with sliding grooves that are slidably connected to the welding gun.

[0016] By adopting the above technical solution, when the sliding plate slides into the L-shaped support plate, the welding torch can slide back and forth inside the L-shaped support plate through the groove.

[0017] The present invention is further configured such that a grounding carbon brush, which works in conjunction with the drive shaft, is bolted to the side of the base near the three-jaw chuck.

[0018] By using the above technical solution, the drive shaft is connected to the ground by using a grounding carbon brush, which can release the accumulated static charge in time, prevent the oil film from being broken down, and protect the bearing and lubrication system.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. By rotating the drive shaft, the rotating cylinder is driven to rotate, causing the top column to slide inside the curved groove. This drives the drive shaft to move the round tube held inside the three-jaw chuck, creating a motion trajectory consistent with the groove inside the curved groove. This replicates the intersection curve of the round tube, thus realizing the motion path required for cutting and welding. This solves the problems of low precision and slow speed in manual cutting and welding, and the large size, complex operation, environmental constraints, and high cost of CNC equipment, making it easier to use.

[0021] 2. The welding torch is moved linearly by sliding a sliding plate, and the sliding plate is fixed by rotating a limiting bolt. This allows for fine-tuning of the cutting and welding positions of the intersecting curves of the circular pipes as needed, improving the practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 This is a partial structural side sectional view of this utility model.

[0025] Reference numerals in the attached drawings: 1. Base; 2. Linear bearing; 3. Rotating ring; 4. Drive shaft; 5. Strip-shaped clamp; 6. Rotating cylinder; 7. Curved slide; 8. Top column; 9. Mounting base; 10. Three-jaw chuck; 11. L-shaped support plate; 12. Sliding plate; 13. Slide; 14. Limit bolt; 15. Welding torch; 16. Grounding carbon brush; 17. Handle; 18. Handwheel. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] refer to Figure 1 , Figure 2A circular tube intersection cutting and welding device includes a base 1, a linear bearing 2 bolted to the top of the base 1, a rotating ring 3 rotatably connected through the interior of the linear bearing 2, a drive shaft 4 slidably connected through the interior of the rotating ring 3, a strip-shaped clamping block 5 welded to the top of the drive shaft 4 and engaging with the rotating ring 3, and a rotating cylinder 6 and a mounting seat 9 welded to both ends of the drive shaft 4, respectively. A curved groove 7 is formed on the surface of the rotating cylinder 6. A top column 8 is bolted to the top of the base 1 near the rotating cylinder 6, and the top of the top column 8 is slidably connected to the interior of the curved groove 7. A three-jaw chuck 10 is bolted to the end of the mounting seat 9 away from the linear bearing 2. By rotating the drive shaft 4, the rotating cylinder 6 is rotated, causing the top column 8 to slide within the curved groove 7. Thus, the drive shaft 4 drives the circular tube clamped inside the three-jaw chuck 10 to produce a movement trajectory consistent with the groove inside the curved groove 7, thereby replicating the intersection curve of the circular tube and realizing the motion path required for cutting and welding. It solves the problems of low precision and slow speed of manual cutting and welding, and the problems of large size, complicated operation, environmental constraints and high cost of CNC equipment, making it easy to use.

[0029] refer to Figure 1 , Figure 2 Wear-resistant liners are welded to the inner surface of the curved slide groove 7 and the top of the top column 8. This reduces wear caused by the top of the top column 8 sliding inside the curved slide groove 7, thereby reducing deviations in the trajectory of the intersecting circular tube driven by the drive shaft 4.

[0030] refer to Figure 1 , Figure 2 A handwheel 18 is welded to the end of the rotating cylinder 6 away from the drive shaft 4, and a handle 17 is welded to the bottom of the handwheel 18. This allows the rotating cylinder 6 and drive shaft 4 to be rotated manually by turning the handle 17 and the handwheel 18, so as to cut and weld the intersection line of the circular tube.

[0031] refer to Figure 1 The handwheel 18 can also be a geared motor, with the output shaft of the geared motor bolted to the end of the rotating cylinder 6 furthest from the transmission shaft 4. A motor drive can be installed according to actual production needs, making it suitable for cutting large round pipes and avoiding the excessive strain of manual rotation.

[0032] Brief description of the usage process: The round tube is fixed on the three-jaw chuck 10, and then the drive shaft 4 is rotated to drive the round tube to rotate. At the same time, the rotation of the drive shaft 4 will drive the rotating cylinder 6 at the other end to rotate synchronously, so that the top of the top column 8 slides inside the curved groove 7. Due to the force between the curved groove 7 and the top column 8, the drive shaft 4 can be pushed to make linear motion, so that the linear motion trajectory of the round tube moves with the internal groove shape of the curved groove 7, thus replicating the intersecting motion curve. Furthermore, the drive shaft 4 is engaged with the inside of the rotating ring 3 by the strip-shaped locking block 5, so that the drive shaft 4 can still rotate normally when sliding linearly inside the rotating ring 3, thereby enabling the round tube to achieve the motion path required for cutting and welding during the cutting process.

[0033] Example 2:

[0034] refer to Figure 1 , Figure 2 , Figure 3 A circular pipe intersection line cutting and welding device is disclosed. An L-shaped support plate 11 is bolted to the top of a linear bearing 2 near the three-jaw chuck 10. A sliding plate 12 is slidably connected through the interior of the L-shaped support plate 11. A welding torch 15 is bolted to the end of the sliding plate 12 away from the L-shaped support plate 11. A limiting bolt 14, which engages with the sliding plate 12, is threaded through the end of the L-shaped support plate 11 near the welding torch 15. The welding torch 15 is linearly moved and adjusted by sliding the sliding plate 12, and the sliding plate 12 is fixed by rotating the limiting bolt 14. This allows for fine-tuning of the cutting and welding position of the circular pipe intersection curve as needed, improving the practicality of the device.

[0035] refer to Figure 1 , Figure 3 The top and bottom of the L-shaped support plate 11 are provided with sliding grooves 13 that are slidably connected to the welding torch 15. When the sliding plate 12 slides into the L-shaped support plate 11, the welding torch 15 can slide back and forth inside the L-shaped support plate 11 through the sliding grooves 13.

[0036] refer to Figure 2 A grounding carbon brush 16, which works in conjunction with the drive shaft 4, is bolted to the side of the base 1 near the three-jaw chuck 10. By using the grounding carbon brush 16 to connect the drive shaft 4 to the ground, the accumulated static charge can be released in a timely manner, preventing the oil film from being broken down and protecting the bearings and lubrication system.

[0037] Brief description of the usage process: By rotating the limiting bolt 14 and engaging it with the L-shaped support plate 11, the limiting bolt 14 slides out of the L-shaped support plate 11, thereby driving the sliding plate 12 to slide inside the L-shaped support plate 11, adjusting the welding torch 15 bolted to one end of the sliding plate 12. Then, by rotating the limiting bolt 14 in the opposite direction and engaging it with the L-shaped support plate 11 again, the limiting bolt 14 secures the sliding plate 12 against the inside of the L-shaped support plate 11, thus limiting and securing the welding torch 15.

[0038] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A circular pipe intersection welding device, comprising a base (1), characterized in that: A linear bearing (2) is bolted to the top of the base (1). A rotating ring (3) is rotatably connected through the interior of the linear bearing (2). A drive shaft (4) is slidably connected through the interior of the rotating ring (3). A strip-shaped locking block (5) that engages with the rotating ring (3) is welded to the top of the drive shaft (4). A rotating cylinder (6) and a mounting seat (9) are welded to both ends of the drive shaft (4). A curved groove (7) is provided on the surface of the rotating cylinder (6). A top column (8) is bolted to the top of the base (1) near the rotating cylinder (6). The top of the top column (8) is slidably connected to the interior of the curved groove (7). A three-jaw chuck (10) is bolted to the end of the mounting seat (9) away from the linear bearing (2).

2. The circular tube intersection welding device according to claim 1, characterized in that: An L-shaped support plate (11) is bolted to the top of the linear bearing (2) near the three-jaw chuck (10). A sliding plate (12) is slidably connected through the interior of the L-shaped support plate (11). A welding torch (15) is bolted to the end of the sliding plate (12) away from the L-shaped support plate (11). A limiting bolt (14) that engages with the sliding plate (12) is threaded through the end of the L-shaped support plate (11) near the welding torch (15).

3. The circular pipe intersection welding device according to claim 1, characterized in that: The inner surface of the curved chute (7) and the top of the top column (8) are both welded with wear-resistant liners.

4. The circular pipe intersection welding device according to claim 1, characterized in that: A handwheel (18) is welded to one end of the rotating cylinder (6) away from the drive shaft (4), and a handle (17) is welded to the bottom of the handwheel (18).

5. The circular tube intersection welding device according to claim 4, characterized in that: The handwheel (18) can also be a geared motor, the output shaft of which is bolted to the end of the rotating cylinder (6) away from the transmission shaft (4).

6. The circular tube intersection welding device according to claim 2, characterized in that: The top and bottom of the L-shaped support plate (11) are provided with sliding grooves (13) that are slidably connected to the welding gun (15).

7. The circular tube intersection welding device according to claim 1, characterized in that: The base (1) is attached to a grounding carbon brush (16) that works in conjunction with the drive shaft (4) on the side near the three-jaw chuck (10).

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