A device for rolling and flattening a steel pipe weld

Abstract

The utility model discloses a kind of for steel pipe weld bead rolling and leveling equipment, it includes bed, base, vertical rolling and pressing component, horizontal rolling and pressing component, adjustable component, control system and power system.Equipment is repeated rolling and pressing to steel pipe weld by horizontal and vertical direction's roll, eliminates weld projection, realizes the smooth transition of weld and base material.Control system uses PLC core unit, supports parameter setting and real-time monitoring;Power system is powered by hydraulic station, ensure accurate control.The present application can significantly improve production efficiency, reduce labor intensity, improve steel pipe inner surface finish and weld quality, adapt to different size steel pipe processing demand, meet food-grade steel pipe use requirement.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe processing, and in particular to a rolling and leveling device for steel pipe weld seams. Background Technology

[0002] In the steel pipe production process, weld seam leveling equipment is a key device used to flatten the inner weld seam of stainless steel welded pipes. Its purpose is to achieve a smooth transition between the inner weld seam and the base material, thereby eliminating surface defects and highlighting the advantages of the welded pipe. Traditional weld seam leveling equipment typically uses a pair of horizontal and vertical rollers to repeatedly press and roll the weld seam, completing multiple rolling actions per minute to ensure a good transition between the weld seam and the base material, and to improve the appearance quality and surface finish of the inner wall of the steel pipe. However, existing technologies have some shortcomings that urgently need to be addressed. For example, the traditional equipment is complex to operate during roller installation and adjustment, resulting in high labor intensity. Furthermore, changing or disassembling the molds can easily damage the bearings, affecting the equipment's lifespan and production efficiency. In addition, existing equipment lacks flexibility in adapting to steel pipes of different sizes, and the adjustment process is cumbersome, making it difficult to meet diverse production needs. More importantly, traditional equipment lacks precise control methods during the rolling process, making it impossible to monitor and adjust key parameters in real time, which may lead to unsatisfactory weld seam leveling results and consequently affect the overall quality of the steel pipe. Therefore, developing a weld bead rolling and leveling equipment that can improve the ease of roll installation, reduce labor intensity, enhance equipment adaptability, and achieve precise control has become a technical problem that the industry urgently needs to solve. Utility Model Content

[0003] The purpose of this invention is to provide a rolling and leveling device for steel pipe welds, so as to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A rolling and leveling device for steel pipe welds includes a bed, a base, a vertical rolling assembly, a horizontal rolling assembly, and a control system. The base is fixedly mounted on the bed, supporting the horizontal and vertical rolling assemblies. The horizontal rolling assembly consists of an upper pressing module and a lower pressing module, respectively rolling the steel pipe weld in the vertical direction. The vertical rolling assembly is mounted on the bed via a slider mounting base and works in conjunction with the horizontal rolling assembly to roll the steel pipe weld horizontally. The control system is integrated into the device for automatically adjusting and monitoring the working status of each component.

[0006] Furthermore, the lower pressing module of the horizontal rolling assembly includes two pairs of support seats, with circular guide pillars fixedly arranged between the paired support seats. A pair of sliders are slidably arranged on the circular guide pillars, and a mold mounting shaft is rotatably connected between the sliders. A lower horizontal roller is installed on the mold mounting shaft. A pair of vertical guide pillars are fixedly arranged on the top of the sliders. A guide sleeve fixing plate is sleeved on the vertical guide pillars. The guide sleeve fixing plate is slidably arranged on the vertical guide pillars through multiple upper and lower guide sleeves and is fixedly arranged with an upper mold fixing seat. An upper horizontal roller is rotatably connected to the upper mold fixing seat. A large hydraulic cylinder fixing plate is fixedly arranged on the top of the guide sleeve fixing plate. A large hydraulic cylinder is installed in the middle of the large hydraulic cylinder fixing plate. The output end of the large hydraulic cylinder is fixedly connected to the guide sleeve fixing plate and is used to drive the guide sleeve fixing plate to slide up and down along the vertical guide pillars, thereby adjusting the distance between the upper and lower horizontal rollers.

[0007] Specifically, the vertical rolling assembly includes a slider fixing seat slidably mounted on the bed, with a pair of transverse sliders slidably mounted inside the slider fixing seat. The transverse sliders can freely slide within the slider fixing seat. An adjusting screw is threadedly connected to the middle of the transverse slider, and the adjusting screw passes through the transverse slider laterally. The distance between the two transverse sliders is adjusted by rotating the adjusting screw to accommodate steel pipes of different diameters. A vertical mold shaft is fixedly mounted on the transverse slider, and a freely rotatable vertical roller is sleeved on the vertical mold shaft. The small hydraulic cylinder is fixedly connected to the slider fixing seat through a connecting seat and is used to drive the slider fixing seat to move back and forth along the bed, thereby realizing the translation control of the vertical rolling assembly and the horizontal rolling assembly.

[0008] Furthermore, the control system uses a Delta PLC from Taiwan as the core control unit, and the operation section is equipped with a rocker-arm touch screen. The touch screen is used to set parameters such as the trolley travel distance, the roller pressing pressure, the pressing speed, the trolley forward and backward speed, the buffer time, and the horizontal roller pressing and rising time. The touch screen also displays data such as the trolley's current position and current speed in real time. When the equipment malfunctions, the system will display alarm information to facilitate users to quickly find and solve the problem. The control system supports one-button start of the automatic pressing function, simplifying the operation process.

[0009] The specific implementation of the technical solution of this utility model is as follows: S1. Adjust the distance between the horizontal sliders by adjusting the rotation of the lead screw, so that the vertical rollers can adapt to the diameter of the steel pipe; S2. Drive the guide sleeve fixing plate to slide up and down along the vertical guide column by extending and retracting the output end of the large hydraulic cylinder, and adjust the distance between the upper and lower horizontal rollers to adapt to the thickness of the steel pipe; S3. Control the slider fixing seat to move back and forth along the bed by extending and retracting the small hydraulic cylinder, so as to achieve smooth rolling of the weld seam of the steel pipe by the horizontal rollers and the vertical rollers; S4. Set the process parameters through the touch screen, and coordinate the working status of each component by the control system to ensure the weld seam leveling effect.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention significantly improves the efficiency and precision of weld seam compaction and leveling through optimized structural design. Firstly, the adjustable spacing between the horizontal and vertical rolls eliminates the complex installation and adjustment processes of traditional equipment, reducing labor intensity. Secondly, the combined design of the adjusting screw and large hydraulic cylinder enables adaptive processing of steel pipes of different sizes and thicknesses. Thirdly, the introduction of the automated control system simplifies the operation process and improves production efficiency. Finally, the synergistic effect of the horizontal and vertical rolls eliminates weld defects, beautifies the appearance of the inner wall of the steel pipe, and improves the smoothness of the inner surface.

[0012] In particular, the equipment demonstrates excellent performance in practical applications. Through repeated rolling by horizontal and vertical rolls, the weld seam achieves a smooth transition with the base material, meeting the high-quality requirements for the inner surface finish of food-grade steel pipes. Furthermore, the modular design of the equipment facilitates maintenance and component replacement, extending its service life and providing a reliable solution for stainless steel welded pipe production lines.

[0013] In summary, this utility model, through structural optimization and the application of automated control technology, solves the problems of complex operation and poor adaptability of existing weld seam leveling equipment, and has significant technological progress and industrial application value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is the front view of the present utility model;

[0016] Figure 3 This is a top view of the present invention.

[0017] Attached image annotations:

[0018] 1. Bed; 2. Base; 4. Support seat; 5. Round guide column; 6. Slider; 7. Front and rear guide sleeves; 8. Vertical guide column; 9. Upper and lower guide sleeves; 10. Guide sleeve fixing plate; 11. Large hydraulic cylinder fixing plate; 12. Nut; 13. Mold mounting shaft; 14. Upper mold fixing seat; 15. Connecting seat; 16. Slider fixing seat; 17. Adjusting screw; 18. Transverse slider; 19. Vertical mold shaft; 20. Vertical mold shaft nut; 21. Large hydraulic cylinder; 22. Small hydraulic cylinder; 23. Horizontal roller; 24. Vertical roller. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0023] This embodiment provides a rolling and leveling device for steel pipe weld seams, the specific implementation of which is described in conjunction with the appendix. Figure 1 To be continued Figure 3 A detailed description will be provided below. This equipment mainly includes a bed 1, a base 2, a vertical rolling assembly, a horizontal rolling assembly, and a control system. The specific implementation of this equipment will be described below from the aspects of structural design of each component, operating principle, and operation procedure.

[0024] The bed 1, serving as the basic support of the equipment, is welded from high-strength steel to ensure sufficient stability and rigidity during operation. The base 2 is fixedly mounted on the bed 1, with two pairs of support seats 4 bolted to its top. A circular guide post 5 is fixedly installed between each pair of support seats 4; the circular guide post 5 is the core guiding component of the horizontal rolling assembly. A slider 6 is slidably mounted on the circular guide post 5, and the sliders 6 are rotatably connected to the lower horizontal roller 23 via a mold shaft 13. A pair of vertical guide posts 8 are fixedly mounted on the top of the slider 6, and a guide sleeve fixing plate 10 is fitted onto the vertical guide post 8. The guide sleeve fixing plate 10 is slidably connected to the vertical guide post 8 via multiple upper and lower guide sleeves 9, thereby enabling vertical movement along the vertical guide post 8. A large hydraulic cylinder fixing plate 11 is fixedly mounted on the top of the guide sleeve fixing plate 10, and a large hydraulic cylinder 21 is installed in the middle of the large hydraulic cylinder fixing plate 11; the output end of the large hydraulic cylinder 21 is fixedly connected to the guide sleeve fixing plate 10. When the large hydraulic cylinder 21 extends or retracts, it drives the guide sleeve fixing plate 10 to slide up and down along the vertical guide column 8, thereby driving the upper mold fixing seat 14 and the upper horizontal roller 23 to move up and down, adjusting the distance between the upper horizontal roller 23 and the lower horizontal roller 23 to meet the processing requirements of steel pipes of different thicknesses.

[0025] The vertical rolling assembly includes a slider fixing seat 16, which is slidably mounted on the bed 1 and fixedly connected to a connecting seat 15 on the bed 1 via a small hydraulic cylinder 22. A pair of transverse sliders 18 are slidably mounted within the slider fixing seat 16, allowing them to slide freely within the seat. An adjusting screw 17 is threadedly connected to the center of each transverse slider 18, passing laterally through it. Rotating the adjusting screw 17 adjusts the distance between the two transverse sliders 18, accommodating steel pipes of different diameters. A vertical die shaft 19 is fixedly mounted on each transverse slider 18, and a freely rotatable vertical roller 24 is fitted onto the vertical die shaft 19. The extension and retraction of the small hydraulic cylinder 22 drives the slider fixing seat 16 to move back and forth along the bed 1, causing the vertical roller 24 and the horizontal roller 23 to gently roll the weld seam of the steel pipe.

[0026] The control system is integrated into the equipment, using a Delta PLC from Taiwan as the core control unit and a rocker-arm touchscreen as the human-machine interface. The touchscreen displays and allows setting parameters such as the trolley travel distance, roller pressing pressure, pressing speed, trolley forward and backward speed, buffer time, and the pressing and rising time of the horizontal roller 23. The touchscreen also displays the trolley's current position and speed in real time. When the equipment malfunctions, alarm information is displayed on the touchscreen for quick fault location. The control system supports one-button start of the automatic pressing function, simplifying the operation process.

[0027] The actual operation of this equipment is as follows: First, the steel pipe to be processed is placed in the working area of ​​the equipment. The lead screw 17 is rotated and adjusted according to the pipe diameter to regulate the distance between the horizontal sliders 18, ensuring the vertical roller 24 adapts to the pipe diameter. Next, the downward pressure of the horizontal roller 23 is set via the touchscreen. The large hydraulic cylinder 21 is activated, driving the guide sleeve fixing plate 10 to slide up and down along the vertical guide column 8, adjusting the distance between the upper and lower horizontal rollers 23 to suit the pipe thickness. Then, the small hydraulic cylinder 22 is activated, driving the slider fixing seat 16 to move back and forth along the bed 1, causing the vertical roller 24 and horizontal roller 23 to repeatedly roll the weld seam of the steel pipe. The horizontal roller 23 is responsible for rolling in the vertical direction, while the vertical roller 24 is responsible for rolling in the horizontal direction. Their combined action eliminates weld defects, ensuring a smooth transition between the weld seam and the base material. During processing, the control system monitors the working status of each component in real time to ensure processing accuracy and efficiency.

[0028] To verify the actual performance of this equipment, multiple tests were conducted on a stainless steel welded pipe production line. The test results show that the synergistic effect of the horizontal roll 23 and the vertical roll 24 significantly improved the weld seam leveling effect, eliminated weld defects, beautified the appearance of the inner wall of the steel pipe, and improved the surface finish of the inner surface. Furthermore, the combined design of the adjusting screw 17 and the large hydraulic cylinder 21 enables adaptive processing of steel pipes of different sizes and thicknesses, and the modular design facilitates maintenance and component replacement, extending the equipment's service life.

[0029] In summary, this utility model, through optimized structural design and the application of automated control technology, solves the problems of complex operation and poor adaptability of existing weld seam leveling equipment, and has significant technological progress and industrial application value.

[0030] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for rolling and flattening a weld bead of a steel pipe, characterized by: The equipment includes a bed (1), a base (2), a vertical rolling assembly, a horizontal rolling assembly, and a control system. The bed (1) is fixedly provided with a base (2), which is used to support the horizontal rolling assembly and the vertical rolling assembly. The horizontal rolling assembly is divided into an upper pressing module and a lower pressing module, which respectively realize the vertical rolling of the steel pipe weld. The vertical rolling assembly is installed on the bed (1) through a slider fixing seat (16) and works in conjunction with the horizontal rolling assembly to complete the horizontal rolling of the steel pipe weld. The control system is integrated into the equipment and is used to automatically adjust and monitor the working status of each component.

2. The apparatus for rolling and flattening a weld bead of a steel pipe according to claim 1, wherein: The horizontal rolling assembly includes two pairs of support seats (4), with a circular guide post (5) fixedly arranged between the two pairs of support seats (4). A pair of sliders (6) are slidably arranged on the circular guide post (5). A mold mounting shaft (13) is rotatably connected between the sliders (6), and a horizontal roller (23) is installed on the mold mounting shaft (13).

3. The apparatus for rolling and flattening a weld bead of a steel pipe according to claim 2, wherein: A pair of vertical guide posts (8) are fixedly installed on the top of the slider (6). A guide sleeve fixing plate (10) is sleeved on the vertical guide post (8). The guide sleeve fixing plate (10) is slidably installed on the vertical guide post (8) through multiple upper and lower guide sleeves (9), and is fixedly installed with an upper mold fixing seat (14). The upper mold fixing seat (14) is rotatably connected to a horizontal roller (23).

4. The apparatus for rolling and flattening a weld bead of a steel pipe according to claim 1, wherein: The vertical rolling assembly includes a slider fixing seat (16) slidably mounted on the bed (1). A pair of transverse sliders (18) are slidably mounted inside the slider fixing seat (16). The transverse sliders (18) can slide freely within the slider fixing seat (16). An adjusting screw (17) is threadedly connected to the middle of the transverse slider (18). The adjusting screw (17) passes through the transverse slider (18) laterally.

5. The apparatus for rolling and flattening a weld bead of a steel pipe according to claim 4, wherein: A vertical mold shaft (19) is fixedly installed on the horizontal slider (18). A vertical roller (24) that can rotate freely is sleeved on the vertical mold shaft (19). A small oil cylinder (22) is fixedly connected to the slider fixing seat (16) through the connecting seat (15) and is used to drive the slider fixing seat (16) to move back and forth along the bed (1).

6. The equipment for rolling and leveling weld seams of steel pipes as described in claim 1, characterized in that: The control system uses Delta PLC from Taiwan as the core control unit. The operation part is equipped with a rocker-type touch screen. The touch screen is used to set the trolley travel distance, roller pressing pressure, pressing speed, trolley forward and backward speed, buffer time, and horizontal roller (23) pressing and rising time parameters.

7. The rolling and leveling equipment for steel pipe welds as described in claim 6, characterized in that: The touchscreen displays the current position and speed of the vehicle in real time. When the equipment malfunctions, the system displays an alarm message. The control system supports one-button start of the automatic pipe pressing function.

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