Pipe bending device

Abstract

The utility model discloses a pipe bending device which comprises a machine frame, a feeding mechanism and a pipe bending mechanism, the feeding mechanism and the pipe bending mechanism are both fixedly connected with the machine frame, the feeding mechanism is used for conveying a pipeline into the pipe bending mechanism, and the pipe bending mechanism comprises a moving assembly, a first guide assembly and a second guide assembly. The moving assembly is arranged at the end, away from the feeding mechanism, of the rack, the first guiding assembly is located at the end, close to the feeding mechanism, of the moving assembly, the second guiding assembly is located at the end, away from the feeding mechanism, of the moving assembly, the first guiding assembly is fixedly connected with the moving assembly, and the second guiding assembly is rotationally connected with the moving assembly. According to the pipe bending device, the second guide assembly and the moving assembly which are rotationally connected are arranged, the extending amount of the moving assembly is controlled to be different, three-dimensional bending of a pipeline is achieved, the pipeline does not need to be disassembled back and forth, and operation is easy and convenient; and in the bending process of the pipeline, visual inspection of people is not needed, and the precision of the bending angle of the pipeline can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe bending, and in particular relates to a pipe bending device. Background Art

[0002] The workload of pipeline prefabrication is large, and there are many steel pipes that need to be bent, including three-dimensional pipelines that need to butt-weld different pipe fittings. In the prior art, during the steel pipe bending process, the equipment can only bend at a single plane angle, and cannot achieve three-dimensional bending. If the same steel pipe needs to be bent to other angles later, the steel pipe needs to be unloaded and reloaded, and during the bending process, the control of the pipe angle needs to rely on human visual observation, which has low accuracy; and the workload of pipeline prefabrication welding is large. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a pipe bending device to achieve three-dimensional bending of pipes, improve the accuracy of bending angles, and reduce the welding workload during pipe prefabrication.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pipe bending device comprises a frame, a feeding mechanism and a pipe bending mechanism, wherein the feeding mechanism and the pipe bending mechanism are both fixedly connected to the frame, the feeding mechanism is used to transport the pipe to the pipe bending mechanism, and the pipe bending mechanism comprises a moving assembly, a first guide assembly and a second guide assembly, the moving assembly is arranged at an end of the frame away from the feeding mechanism, the first guide assembly is located at an end of the moving assembly close to the feeding mechanism, the second guide assembly is located at an end of the moving assembly away from the feeding mechanism, the first guide assembly is fixedly connected to the moving assembly, and the second guide assembly is rotatably connected to the moving assembly.

[0006] By setting a second guide component and a moving component that are rotatably connected, the extension amount of the moving component is controlled to be different, so that the pipeline is bent in the Z direction (vertical direction) or the Y direction (front and back direction), thereby realizing three-dimensional bending of the pipeline.

[0007] In some embodiments of the utility model, the first guide assembly and the second guide assembly each include a fixed frame and at least three rollers, the fixed frame has a cavity for accommodating the rollers, and the two sides of the fixed frame close to and away from the moving assembly are provided with openings, and the two openings are connected to the cavity. In some embodiments of the utility model, the outer wall of the roller is a concave curved surface, which is convenient for matching with the pipeline.

[0008] In some embodiments of the utility model, three rollers are provided, the roller shafts of the three rollers are connected to the inner wall of the fixed frame, and the central axes of the three rollers are located on the same vertical plane perpendicular to the length direction of the frame.

[0009] In some embodiments of the utility model, the connecting line of the centers of the three rollers forms an equilateral triangle, and the cross-sectional area of ​​the region formed between the outer walls of the three rollers is larger than the cross-sectional area of ​​the pipe. Such an arrangement ensures that the pipe can pass through the interior of the first guide assembly and the second guide assembly.

[0010] In some embodiments of the utility model, a channel for the pipe to pass through is formed between the outer walls of the three rollers, and the diameter of the inscribed circle of the cross section of the channel is equal to the outer diameter of the pipe. Such a configuration ensures that when the pipe passes through the interior of the fixing frame of the first guide assembly and the second guide assembly, the three rollers cooperate with each other to clamp the outer wall of the pipe and keep the position of the pipe from shifting during the movement, thereby preventing the pipe from falling or shifting during movement.

[0011] In some embodiments of the utility model, the moving component includes at least four moving units, each of the moving units includes a driver, a universal joint rotatably connected to the pin shaft of the driver, a slider fixedly connected to an end of the universal joint away from the driver, and a slide rail slidably connected to the slider, the driver is fixedly arranged on a surface of the fixed frame of the first guide component close to the moving component, the slide rail is fixedly arranged on a surface of the fixed frame of the second guide component close to the moving component, and the driver and the slide rail are arranged in a one-to-one correspondence.

[0012] In some embodiments of the utility model, four movable units are provided, and the upper end, lower end, left end and right end of the fixed frame of the first guide component close to one side of the movable component are respectively provided with a driver, and the upper end, lower end, left end and right end of the fixed frame of the second guide component close to one side of the movable component are respectively provided with a slide rail.

[0013] In some embodiments of the utility model, the two drivers located at the upper and lower ends of a side of the fixed frame of the first guide component close to the movable component are located in the same vertical direction, and the two drivers located at the left and right ends of a side of the fixed frame of the first guide component close to the movable component are located in the same horizontal direction, and the vertical direction is perpendicular to the horizontal direction.

[0014] In some embodiments of the utility model, the length directions of the two sliding rails located at the upper and lower ends of a side of the fixed frame of the second guide assembly close to the movable assembly are parallel to the height direction of the fixed frame, and the length directions of the two sliding rails located at the left and right ends of a side of the fixed frame of the second guide assembly close to the movable assembly are parallel to the width direction of the fixed frame.

[0015] In some embodiments of the utility model, a displacement sensor is provided on one side of each of the drivers, and the displacement sensor is used to measure the extension length of the pin shaft of the driver.

[0016] Due to the adoption of the above technical scheme, compared with the prior art, the utility model has the following advantages: a pipe bending device of the utility model, by setting a second guide component and a moving component that are rotatably connected, controls the extension amount of the moving component to be different, so that the pipeline is bent in the Z direction (vertical direction) or the Y direction (front and back direction), thereby realizing three-dimensional bending of the pipeline, without the need to disassemble the pipeline back and forth, and the operation is simple and convenient; and during the bending process of the pipeline, there is no need to rely on human visual observation, which is conducive to improving the accuracy of the pipeline bending angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the pipe bending device in the preferred embodiment of the utility model;

[0019] Figure 2 It is a left-side structural schematic diagram of the second guide assembly of the pipe bending device in the preferred embodiment of the utility model;

[0020] Figure 3 It is a right side structural schematic diagram of the second guide assembly of the pipe bending device in the preferred embodiment of the utility model;

[0021] Among them, the frame -1, the feeding mechanism -2, the moving unit -3, the driver -31, the universal joint -32, the slide rail -33, the displacement sensor -34, the first guide component -4, the second guide component -5, the fixed frame -61, the opening -611, the roller -62, the roller shaft -63, the channel -64, and the pipeline -7. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] like Figures 1 to 3 As shown, the pipe bending device of this embodiment includes a frame 1, a feeding mechanism 2 and a pipe bending mechanism. The feeding mechanism 2 and the pipe bending mechanism are both fixedly connected to the frame 1, the feeding mechanism 2 is used to convey the pipe 7 to be bent to the pipe bending mechanism; the pipe bending mechanism is used to perform three-dimensional bending on the pipe 7.

[0024] Further, see Figures 1 to 3 The pipe bending mechanism includes a moving assembly, a first guide assembly 4 and a second guide assembly 5. The moving assembly is arranged at an end of the frame 1 away from the feeding mechanism 2, the first guide assembly 4 is located at an end of the moving assembly close to the feeding mechanism 2, and the second guide assembly 5 is located at an end of the moving assembly away from the feeding mechanism 2. The first guide assembly 4 is fixedly connected to the moving assembly, and the second guide assembly 5 is rotatably connected to the moving assembly.

[0025] Specifically, the first guide assembly 4 and the second guide assembly 5 have the same structure, both including a fixed frame 61 and at least three rollers 62. In this embodiment, preferably, three rollers 62 are provided. The fixed frame 61 has a cavity for accommodating the rollers 62. The two sides of the fixed frame 61 close to and away from the moving assembly are provided with openings 611. The two openings 611 are connected to the cavity inside the fixed frame 61 to ensure that the pipe 7 can enter and exit the fixed frame 61.

[0026] The roller shafts 63 of the three rollers 62 are all connected to the inner wall of the fixed frame 61. The central axes of the three rollers 62 are located on the same vertical plane perpendicular to the length direction of the frame 1, and the connecting line of the centers of the three rollers 62 forms an equilateral triangle. In order to ensure that the pipe 7 can smoothly pass through the interior of the fixed frame 61 of the first guide assembly 4 and the second guide assembly 5, the outer wall of the roller 62 is set to be a concave curved surface, which is convenient for matching with the outer wall of the pipe 7; and the cross-sectional area of ​​the area formed between the outer walls of the three rollers 62 is also set to be larger than the cross-sectional area of ​​the pipe 7. More specifically, a channel 64 for the pipe 7 to pass through is formed between the outer walls of the three rollers 62, and the diameter of the inscribed circle of the cross section of the channel 64 is equal to the outer diameter of the pipe 7 to be bent, and during the movement of the pipe 7, the roller 62 always keeps rotating, and the three rollers 62 cooperate with each other to clamp the pipe 7 and keep the position of the pipe 7 from being offset during the movement, so as to ensure that the pipe 7 moves in a predetermined direction to achieve three-dimensional bending.

[0027] Further, see Figures 1 to 3 The moving assembly in this embodiment includes four moving units 3. Each moving unit 3 includes a driver 31, a universal joint 32 rotatably connected to the pin shaft of the driver 31, a slider fixedly connected to the end of the universal joint 32 away from the driver 31, and a slide rail 33 slidably connected to the slider; the driver 31 is preferably a hydraulic cylinder. A driver 31 is fixedly provided at the upper end, lower end, left end and right end of the fixed frame 61 of the first guide assembly 4 on one side close to the moving assembly, and a slide rail 33 is fixedly provided at the upper end, lower end, left end and right end of the fixed frame 61 of the second guide assembly 5 on one side close to the moving assembly. The two drivers 31 located at the upper and lower ends of the fixed frame 61 of the first guide assembly 4 close to the moving assembly are located in the same vertical direction, and the two drivers 31 located at the left and right ends of the fixed frame 61 of the first guide assembly 4 close to the moving assembly are located in the same horizontal direction, and the vertical direction is perpendicular to the horizontal direction; the two slide rails 33 located at the upper and lower ends of the fixed frame 61 of the second guide assembly 5 close to the moving assembly are located in the same vertical direction, and the two slide rails 33 located at the left and right ends of the fixed frame 61 of the second guide assembly 5 close to the moving assembly are located in the same horizontal direction, and the vertical direction is also perpendicular to the horizontal direction. In addition, the four drivers 31 located at the side of the fixed frame 61 of the first guide assembly 4 close to the moving assembly are arranged one by one with the four slide rails 33 located at the side of the fixed frame 61 of the second guide assembly 5 close to the moving assembly.

[0028] The length direction of the two slide rails 33 located at the upper and lower ends of the fixed frame 61 of the second guide assembly 5 close to the moving assembly is parallel to the height direction of the fixed frame 61, and the length direction of the two slide rails 33 located at the left and right ends of the fixed frame 61 of the second guide assembly 5 close to the moving assembly is parallel to the width direction of the fixed frame 61. Under the driving action of the driver 31, the pin of the driver 31 will extend or retract, thereby driving the universal joint 32 connected thereto to move, and the movement of the universal joint 32 will drive the slider to move back and forth on the slide rail 33. Due to the provision of the universal joint 32, different angles can be formed between it and the slider, which is convenient for ensuring that the slider moves different distances on the slide rail 33; it is also convenient for the pins of each driver 31 to extend or retract different distances to achieve the bending of the pipe 7.

[0029] In addition, each mobile unit 3 also includes a displacement sensor 34. A displacement sensor 34 is arranged on one side of each driver 31, which is used to measure the extended length of the pin shaft of the driver 31, so as to facilitate the quantitative setting of the bending parameters of the pipe 7 and ensure the accuracy of the bending process of the pipe 7.

[0030] The working process of the pipe bending device of this embodiment is as follows:

[0031] First, the device is started, and the feeding mechanism 2 is used to push the pipe 7 to be bent toward the direction close to the moving assembly for loading. The pipe 7 passes through the channel 64 formed by the three rollers 62 in the first guide assembly 4 and enters the opening 611 of the fixed frame 61 of the second guide assembly 5 close to the moving assembly. During the continuous movement of the pipe 7, the displacement sensor 34 controls the extension of the pins of the four drivers 31 respectively, thereby controlling the bending curvature of the pipe 7 to achieve the bending of the pipe 7 in different directions. By controlling the extension of the pin of the driver 31 at the upper end to be greater than the extension of the pin of the driver 31 at the lower end, ensuring that the extension of the pins of the two drivers 31 at the left and right ends are the same and less than the extension of the pin of the driver 31 at the upper end, the pipe 7 can be bent downward. By analogy, the pipe 7 can be bent upward, leftward or rightward.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pipe bending device, characterized in that: It includes a frame, a feeding mechanism and a pipe bending mechanism, wherein the feeding mechanism and the pipe bending mechanism are both fixedly connected to the frame, the feeding mechanism is used to transport the pipeline to the pipe bending mechanism, and the pipe bending mechanism includes a moving component, a first guide component and a second guide component, the moving component is arranged at an end of the frame away from the feeding mechanism, the first guide component is located at an end of the moving component close to the feeding mechanism, the second guide component is located at an end of the moving component away from the feeding mechanism, the first guide component is fixedly connected to the moving component, and the second guide component is rotatably connected to the moving component.

2. The pipe bending device according to claim 1, characterized in that: The first guide assembly and the second guide assembly each include a fixed frame and at least three rollers, the interior of the fixed frame has a cavity for accommodating the rollers, and two sides of the fixed frame close to and away from the movable assembly are provided with openings, and both of the openings are connected to the cavity.

3. The pipe bending device according to claim 2, characterized in that: There are three rollers, the roller shafts of the three rollers are connected to the inner wall of the fixed frame, and the central axes of the three rollers are located on the same vertical plane perpendicular to the length direction of the frame.

4. The pipe bending device according to claim 3, characterized in that: The connecting line of the centers of the three rollers forms an equilateral triangle, and the cross-sectional area of ​​the region formed between the outer walls of the three rollers is larger than the cross-sectional area of ​​the pipe.

5. The pipe bending device according to claim 4, characterized in that: A channel for the pipeline to pass through is formed between the outer walls of the three rollers, and the diameter of the inscribed circle of the cross section of the channel is equal to the outer diameter of the pipeline.

6. The pipe bending device according to claim 1, characterized in that: The moving assembly includes at least four moving units, each of which includes a driver, a universal joint rotatably connected to a pin shaft of the driver, a slider fixedly connected to an end of the universal joint away from the driver, and a slide rail slidably connected to the slider. The driver is fixedly arranged on a surface of a fixed frame of the first guide assembly close to the moving assembly, and the slide rail is fixedly arranged on a surface of a fixed frame of the second guide assembly close to the moving assembly. The driver and the slide rail are arranged in a one-to-one correspondence.

7. The pipe bending device according to claim 6, characterized in that: There are four movable units, and a driver is respectively provided at the upper end, lower end, left end and right end of a fixed frame of the first guide component close to a side of the movable component, and a slide rail is respectively provided at the upper end, lower end, left end and right end of a fixed frame of the second guide component close to a side of the movable component.

8. The pipe bending device according to claim 7, characterized in that: The two drivers located at the upper and lower ends of a side of the fixed frame of the first guide component close to the movable component are located in the same vertical direction, and the two drivers located at the left and right ends of a side of the fixed frame of the first guide component close to the movable component are located in the same horizontal direction, and the vertical direction is perpendicular to the horizontal direction.

9. The pipe bending device according to claim 7, characterized in that: The length directions of the two slide rails located at the upper and lower ends of a side of the fixed frame of the second guide assembly close to the movable assembly are parallel to the height direction of the fixed frame, and the length directions of the two slide rails located at the left and right ends of a side of the fixed frame of the second guide assembly close to the movable assembly are parallel to the width direction of the fixed frame.

10. The pipe bending device according to claim 6, characterized in that: A displacement sensor is provided on one side of each of the drivers, and the displacement sensor is used to measure the extension length of the pin shaft of the driver.

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