Leveling machine for inner and outer welding seams of steel pipe

Abstract

The utility model relates to the technical field of steel pipe forming, in particular to a steel pipe inside and outside weld joint leveling machine which comprises a machine frame, and a fixing platform is arranged on the machine frame. The movable platform is arranged above the fixed platform in a sliding mode, and the movable platform is provided with a leveling assembly used for conducting leveling treatment on a steel pipe welding seam; a toothed rail is fixed to the movable platform, and a driving assembly in matched transmission with the toothed rail is arranged on the fixed platform. According to the arrangement, the toothed rail is arranged on the movable platform, and the driving assembly is arranged on the fixed platform, so that the load of the movable platform is small, the gravity center of the machine is stable, and when the movable platform slides relative to the fixed platform, the problem of excessive vibration cannot occur, and therefore the machining speed can be adjusted to be high to meet the machining requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe forming, in particular to a steel pipe inner and outer weld leveling machine. Background Art

[0002] Stainless steel pipes are widely used in various industries. The forming process is roughly as follows: the cut-to-size steel strip is sent to the crimping machine, which gradually rolls the steel strip inward to form a round tube blank with the opening facing upward. The shape of the round tube blank is then rounded by a powered rounding die. After that, the opening of the round tube blank is welded by a welding machine. However, protrusions are prone to occur at the weld after welding. At this time, a weld flattening machine is needed to flatten and trim the protrusions of the weld, so that the steel pipe meets the standard and does not affect subsequent processing.

[0003] The utility model patent with announcement number CN217990485U discloses an internal and external weld leveling machine, including a frame, a first mounting frame, and a second mounting frame, wherein the second mounting frame is slidably arranged on the frame, a leveling assembly for leveling the internal and external welds of a steel pipe is arranged on the second mounting frame, the first mounting frame is horizontally arranged on one side of the second mounting frame, a first servo motor is vertically arranged on the first mounting frame, a fixed rack is arranged parallel to the long side of the frame, a driving gear is fixed on the output end of the first servo motor, and the driving gear is meshed and connected with the fixed rack. The defect of the prior art is that the fixed rack is arranged on the outside of the frame, the first servo motor is installed on the first mounting frame, and the first mounting frame is horizontally arranged on one side of the second mounting frame, which results in the second mounting frame being too heavy in load, unbalanced in force on the left and right, and unstable in center of gravity. When the second mounting frame moves on the frame, obvious vibration will occur, resulting in the need to reduce the processing speed to ensure the stability of the machine.

[0004] Therefore, there is still room for improvement in the prior art. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model proposes a steel pipe internal and external weld leveling machine, in which a gear rail is arranged on a movable platform, and a driving assembly is arranged on a fixed platform, so that the load on the movable platform is small and the center of gravity of the machine is stable. When the movable platform slides relative to the fixed platform, there will be no problem of excessive vibration, so the processing speed can be adjusted faster to meet the processing requirements.

[0006] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0007] A machine for leveling the internal and external welds of a steel pipe comprises a frame, on which a fixed platform is provided; a movable platform, which is slidably arranged above the fixed platform, on which a leveling component for leveling the welds of the steel pipe is provided; a rack is fixed on the movable platform, and a driving component that cooperates with the rack for transmission is provided on the fixed platform.

[0008] According to the above scheme, slide rail 1 and slide rail 2 are provided at intervals and in parallel on the upper surface of the fixed platform, and slider 1 and slider 2 are provided at intervals and in parallel on the bottom of the movable platform. Slider 1 is slidably connected to slide rail 1, and slider 2 is slidably connected to slide rail 2. The rack rail is located in the middle of the bottom of the movable platform between slider 1 and slider 2, and the drive assembly is located in the middle of the fixed platform between slide rail 1 and slide rail 2.

[0009] According to the above scheme, the driving assembly includes motor 1, a planetary reducer and a transmission gear. The planetary reducer is installed at the output end of motor 1, the transmission gear is installed at the output end of the planetary reducer, and the transmission gear is meshed and connected with the rack.

[0010] According to the above solution, both ends of the slide rail 1 and the slide rail 2 are respectively provided with travel limit blocks that cooperate with the movable platform to limit the position.

[0011] According to the above scheme, the leveling assembly includes a mounting frame 1, a motor 2, a screw assembly, an upper leveling roller and a lower leveling roller. The mounting frame 1 is installed on the upper surface of the fixed platform. A receiving cavity is formed in the mounting frame 1. The upper leveling roller and the lower leveling roller are arranged in the receiving cavity in an upper and lower corresponding manner, and the upper leveling roller can be raised and lowered and is located above the lower leveling roller. The motor 2 and the screw assembly are installed on the top of the mounting frame 1. The output end of the motor 2 is threadedly connected to the screw assembly, and the lower end of the screw assembly extends into the receiving cavity and is connected to the upper leveling roller.

[0012] According to the above solution, both the upper and lower leveling rollers are provided with leveling grooves that match the longitudinal outer diameter of the steel pipe.

[0013] According to the above scheme, a second mounting frame is also installed on the upper surface of the fixed platform, and the second mounting frame is located on one side of the first mounting frame. A left rounding roller and a right rounding roller are installed side by side on the second mounting frame, and the left rounding roller and the right rounding roller are arranged correspondingly.

[0014] According to the above scheme, the left rounding roller and the right rounding roller are both provided with rounding grooves that match the transverse outer diameter of the steel pipe.

[0015] According to the above scheme, a control component for controlling the opening and closing of motor one and motor two is provided on the frame.

[0016] Beneficial effects of the utility model:

[0017] The utility model is arranged in such a way that the toothed rail is arranged on the movable platform, and the driving component is arranged on the fixed platform, so that the load of the movable platform is small, the center of gravity is stable, and no vibration problem will occur when the movable platform slides relative to the fixed platform. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a schematic diagram of the driving component of the utility model.

[0020] Figure 3 is Figure 2 an enlarged view of position A in

[0021] Figure 4 is Figure 1 the left side view of the overall structure in

[0022] Figure 5 is Figure 1 the right side view of the overall structure in

[0023] In the figure:

[0024] 1, frame; 10, fixed platform; 11, first slide rail; 12, second slide rail; 13, first motor; 14, planetary speed reducer; 15, transmission gear; 16, stroke limit block; 17, control component; 2, movable platform; 20, first mounting frame; 21, first slider; 22, second slider; 23, toothed rail; 24, second motor; 25, screw rod assembly; 26, upper leveling roller; 27, lower leveling roller; 28, second mounting frame; 29, left rounding roller; 210, right rounding roller. Detailed Embodiment

[0025] The technical solution of the utility model will be described below in conjunction with the drawings and embodiments.

[0026] As Figures 1 to 5 shown, a pipe internal and external weld leveling machine of the utility model includes a frame 1, and a fixed platform 10 is arranged on the frame 1; a movable platform 2, the movable platform 2 is slidably arranged above the fixed platform 10, and a leveling component for leveling the weld of the pipe is arranged on the movable platform 2; a toothed rail 23 is fixed on the movable platform 2, and a driving component cooperating with the toothed rail 23 for transmission is arranged on the fixed platform 10. In this way, the toothed rail 23 is arranged on the movable platform 2, and the driving component is arranged on the fixed platform 10, so that the load of the movable platform 2 is small, the center of gravity is stable, and no excessive vibration problem will occur when the movable platform 2 slides relative to the fixed platform 10.

[0027] Further, the upper surface of the fixed platform 10 is provided with a slide rail 11 and a slide rail 2 12 at intervals and in parallel, and the bottom of the movable platform 2 is provided with a slider 1 21 and a slider 2 22 at intervals and in parallel, the slider 1 21 is slidably connected to the slide rail 1 11, the slider 22 is slidably connected to the slide rail 2 12, the rack rail 23 is located in the middle of the bottom of the movable platform 2 between the slider 1 21 and the slider 2 22, and the driving assembly is located in the middle of the fixed platform 10 between the slide rail 1 11 and the slide rail 2 12. This arrangement allows the driving assembly to drive the movable platform 2 to slide along the slide rail 1 11 and the slide rail 2 12 when sliding above the fixed platform 10, and the force is even and the stability is good.

[0028] Furthermore, the driving assembly includes a motor 13, a planetary reducer 14 and a transmission gear 15, wherein the planetary reducer 14 is installed at the output end of the motor 13, and the transmission gear 15 is installed at the output end of the planetary reducer 14, and the transmission gear 15 is meshed and connected with the rack 23. In this way, when the motor 13 is working, the planetary reducer 14 is driven to rotate, and the planetary reducer 14 then drives the transmission gear 15 to rotate. Since the transmission gear 15 is meshed and connected with the rack 23, the movable platform 2 is driven to slide back and forth along the slide rail 11 and the slide rail 2 12.

[0029] Further, the two ends of the slide rail 1 11 and the slide rail 2 12 are respectively provided with travel limit blocks 16 that cooperate with the movable platform 2 to limit. This arrangement allows the movable platform 2 to always slide on the slide rail 1 11 and the slide rail 2 12 and will not fall out.

[0030] Further, the leveling assembly includes a mounting frame 20, a motor 24, a screw assembly 25, an upper leveling roller 26 and a lower leveling roller 27. The mounting frame 20 is installed on the upper surface of the fixed platform 10. A receiving cavity is formed in the mounting frame 20. The upper leveling roller 26 and the lower leveling roller 27 are located in the receiving cavity one above the other, and the upper leveling roller 26 can be raised and lowered above the lower leveling roller 27. The upper leveling roller 26 and the lower leveling roller 27 are correspondingly arranged. The motor 24 and the screw assembly 25 are installed on the top of the mounting frame 20. The output end of the motor 24 is threadedly connected to the screw assembly 25. The lower end of the screw assembly 25 extends into the receiving cavity and is connected to the upper leveling roller 26. In this arrangement, during leveling, the steel pipe is placed on the lower leveling roller 27, and the motor 24 drives the screw assembly 25 to move up and down, thereby driving the upper leveling roller 26 to move up and down, and flattening the steel pipe weld located on the lower leveling roller 27.

[0031] Furthermore, the upper leveling roller 26 and the lower leveling roller 27 are both provided with leveling grooves matching the longitudinal outer diameter of the steel pipe. With such arrangement, the leveling effect is better.

[0032] Furthermore, an additional mounting bracket 28 is installed on the upper surface of the fixed platform 10. The mounting bracket 28 is located on one side of the first mounting bracket 20. A left round rolling wheel 29 and a right round rolling wheel 210 are arranged side by side on the mounting bracket 28, and the left round rolling wheel 29 and the right round rolling wheel 210 are arranged correspondingly. With this arrangement, after the upper leveling roller 26 and the lower leveling roller 27 cooperate to flatten the steel pipe weld, the steel pipe is elliptical. Therefore, the left round rolling wheel 29 and the right round rolling wheel 210 are required to cooperate to round the steel pipe.

[0033] Furthermore, the left round rolling wheel 29 and the right round rolling wheel 210 are both provided with round rolling grooves that match the lateral outer diameter of the steel pipe. With this arrangement, the round rolling effect is better.

[0034] Furthermore, a control component 17 for controlling the opening and closing of the first motor 13 and the second motor 24 is provided on the frame 1. With this arrangement, the operation is convenient.

[0035] The working principle of the present utility model: When the steel strip is rolled into an open-upward circular pipe blank by a curling machine, the opening of the circular pipe blank is welded by a welding machine, and then it is transmitted between the upper leveling roller 26 and the lower leveling roller 27. The upper leveling roller 26 is driven by the second motor 24 to drive the screw rod assembly 25 to move up and down, so as to flatten the weld. Since the steel pipe is in a continuous production state during the production process, when the upper leveling roller 26 and the lower leveling roller 27 flatten the steel pipe weld, the movable platform 2 will slide back and forth along the first slide rail 11 and the second slide rail 12 under the drive of the drive component, so as to press and flatten the weld multiple times; in practical applications, in order to realize the internal and external synchronous leveling of the steel pipe weld, a mandrel pulled by a steel wire is also hung by a steel wire. The mandrel is arranged with an interference fit with the inner diameter of the formed steel pipe. In this way, when flattening the steel pipe weld, it can not only effectively support the inner wall of the steel pipe to assist the upper leveling roller 26 to flatten the weld, but also effectively prevent the steel pipe from having large deformation during the shaping process; after the upper leveling roller 26 and the lower leveling roller 27 cooperate to flatten the steel pipe weld, the steel pipe is elliptical. Therefore, the left round rolling wheel 29 and the right round rolling wheel 210 are required to cooperate to round the steel pipe.

[0036] The embodiments of the present utility model have been described above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present utility model, those of ordinary skill in the art can also make many forms without departing from the purpose of the present utility model and the scope protected by the claims. These all belong to the protection scope of the present utility model.

Claims

1. A steel pipe internal and external weld leveling machine, characterized in that: include: A frame (1), wherein a fixed platform (10) is provided on the frame (1); A movable platform (2), the movable platform (2) being slidably disposed above the fixed platform (10), and the movable platform (2) being provided with a leveling component for leveling the weld seam of the steel pipe; A rack rail (23) is fixed on the movable platform (2), and a driving component that cooperates with the rack rail (23) for transmission is provided on the fixed platform (10).

2. A steel pipe internal and external weld leveling machine according to claim 1, characterized in that: The upper surface of the fixed platform (10) is provided with a slide rail 1 (11) and a slide rail 2 (12) spaced apart and parallel to each other, and the bottom of the movable platform (2) is provided with a slider 1 (21) and a slider 2 (22) spaced apart and parallel to each other, the slider 1 (21) is slidably connected to the slide rail 1 (11), and the slider 2 (22) is slidably connected to the slide rail 2 (12), the rack rail (23) is located in the middle of the bottom of the movable platform (2) between the slider 1 (21) and the slider 2 (22), and the drive assembly is located in the middle of the fixed platform (10) between the slider 1 (11) and the slider 2 (12).

3. A steel pipe internal and external weld leveling machine according to claim 2, characterized in that: The driving assembly comprises a motor (13), a planetary reducer (14) and a transmission gear (15), wherein the planetary reducer (14) is mounted on the output end of the motor (13), the transmission gear (15) is mounted on the output end of the planetary reducer (14), and the transmission gear (15) is meshed and transmission-connected with a rack (23).

4. A steel pipe internal and external weld leveling machine according to claim 2, characterized in that: Both ends of the slide rail 1 (11) and the slide rail 2 (12) are respectively provided with travel limit blocks (16) that cooperate with the movable platform (2) to limit the position.

5. The steel pipe internal and external weld leveling machine according to claim 1, characterized in that: The leveling assembly comprises a mounting frame (20), a motor (24), a screw assembly (25), an upper leveling roller (26) and a lower leveling roller (27). The mounting frame (20) is mounted on the upper surface of the fixed platform (10). A receiving cavity is formed in the mounting frame (20). The upper leveling roller (26) and the lower leveling roller (27) are arranged in a corresponding manner up and down in the receiving cavity, and the upper leveling roller (26) can be raised and lowered and is located above the lower leveling roller (27). The motor (24) and the screw assembly (25) are mounted on the top of the mounting frame (20). The output end of the motor (24) is threadedly connected to the screw assembly (25). The lower end of the screw assembly (25) extends into the receiving cavity and is connected to the upper leveling roller (26).

6. A steel pipe internal and external weld leveling machine according to claim 5, characterized in that: The upper leveling roller (26) and the lower leveling roller (27) are both provided with a leveling groove matching the longitudinal outer diameter of the steel pipe.

7. The steel pipe internal and external weld leveling machine according to claim 5, characterized in that: A second mounting frame (28) is also installed on the upper surface of the fixed platform (10), and the second mounting frame (28) is located on one side of the first mounting frame (20). A left rounding roller (29) and a right rounding roller (210) are installed side by side on the second mounting frame (28), and the left rounding roller (29) and the right rounding roller (210) are arranged correspondingly.

8. A steel pipe internal and external weld leveling machine according to claim 7, characterized in that: The left rounding roller (29) and the right rounding roller (210) are both provided with rounding grooves matching the transverse outer diameter of the steel pipe.

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