Coiled pipe bending machine

Abstract

The utility model discloses a pipe bender for coiled pipes, which relates to the technical field of pipe benders and comprises a frame, a pipe feeding device, a forming portion and a pipe bending mechanism, the pipe feeding device is horizontally mounted at the upper end of the frame in a reciprocating sliding manner, and the pipe bender further comprises a turnover mechanism which is positioned on one side, far away from the pipe feeding device, of the forming portion. The bracket and the pressing frame are arranged in a matched mode, after the coiled pipe is bent every time, the first driving motor is used for driving the extending base to drive the bracket and the pressing frame to assist the coiled pipe in turning over by 180 degrees, and then the second driving motor is used for driving the pressing frame to turn over downwards by 90 degrees. Then the first driving motor is used for driving the extending base to drive the bracket and the pressing frame to reversely turn over by 180 degrees, next-time bending operation can be conducted, then the second driving motor is used for driving the pressing frame to turn over by 90 degrees till the pressing frame is pressed on the upper end face of the coiled pipe, the steps are repeated, it is guaranteed that the coiled pipe cannot deform in the turning-over process, and the bending efficiency is improved. Therefore, the forming quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending machine technology, and in particular to a serpentine pipe bending machine. Background Technology

[0002] A serpentine tube is a tube that meanders multiple times within a single plane. It is commonly used in economizers, superheaters, and reheaters, and can be arranged horizontally or vertically. A tube bending machine is required during the bending process of serpentine tubes, and this machine continuously feeds the pipe for multiple bends.

[0003] Regarding serpentine pipe bending machines, a search revealed, for example, a continuous serpentine pipe bending machine disclosed in patent publication number CN219745950U, which includes a support base with a base frame fixedly installed above it. This continuous serpentine pipe bending machine utilizes the cooperation of a base frame, an electric slide rail, an electric slider, a connecting plate, a first drive motor, a first gear, a second gear, a connecting rod, a rotating shaft, a connecting block, an electric telescopic rod, and clamping blocks. When bending a serpentine pipe, the pipe is placed inside the connecting rod, and the clamping blocks limit and fix the pipe to prevent swaying during bending, which could lead to an unsatisfactory bending angle. The electric slide rail drives the electric slider and the connecting plate to advance the connecting rod, performing multiple bends on the subsequent pipe to form a serpentine pipe.

[0004] Based on the above search and combined with existing technology, it was found that existing serpentine pipe bending machines similar to those disclosed above generally require the pipe to be flipped during continuous bending (e.g., as shown in link https: / / haokan.baidu.com / v?pd=wisenatural&vid=1229046272713437171). However, as the pipe gradually takes shape, the flipping resistance increases, and it is easily deformed under its own weight. Currently, manual support is usually used, which is quite cumbersome. Therefore, a serpentine pipe bending machine is proposed to improve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a serpentine pipe bending machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a serpentine pipe bending machine, comprising a frame, a pipe feeding device, a forming part, and a bending mechanism. The pipe feeding device is horizontally and reciprocally slidably mounted on the upper end of the frame. The forming part and the bending mechanism are mounted on the upper end of the frame on one side of the pipe feeding terminal of the pipe feeding device. The machine also includes a flipping mechanism, which is located on the side of the forming part away from the pipe feeding device.

[0007] The flipping mechanism includes a bracket and a pressure bracket, which are respectively attached to both sides of the serpentine tube;

[0008] A fixed frame is installed at the top of the frame, and a drive bracket and a tilting drive assembly for tilting the pressure frame are installed on the fixed frame.

[0009] As a further supplement to this solution, the flipping assembly includes a first drive motor and an extension seat. The bracket and the pressure frame are both mounted on the extension seat, and the first drive motor is mounted on the fixed frame. The output shaft of the first drive motor is on the same straight line as the axis of the feeding direction of the serpentine tube, and the output shaft of the first drive motor is fixed to the extension seat.

[0010] As a further supplement to this solution, the bracket is fixed to the side end of the extension seat, the pressure frame is rotatably mounted on the side end of the extension seat, and a second drive motor for driving the pressure frame to rotate is also installed on the side end of the extension seat.

[0011] As a further supplement to this solution, the forming section includes a forming column and a lifting drive device installed inside the frame. The output end of the lifting drive device is connected to the bottom end of the forming column, and the forming column is provided with annular grooves of different diameters at equal intervals from top to bottom.

[0012] As a further supplement to this solution, the molding section also includes a first mounting plate and a second mounting plate. The first mounting plate is rotatably mounted on the bottom end of the molding column, and the second mounting plate is fixed to the output end of the lifting drive device. The first mounting plate and the second mounting plate are detachably connected.

[0013] As a further supplement to this solution, the pipe bending mechanism includes an electric turntable and a pipe bending block. The electric turntable is rotatably mounted on the inner side of the frame, and the rotation axis of the electric turntable coincides with the axis of the forming column. An electric push rod is horizontally fixed to the side end of the electric turntable through a mounting bracket. A movable seat is fixed to the output end of the electric push rod. An electric push rod is mounted on the upper end of the movable seat. The top output end of the electric push rod is fixed to the pipe bending block.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] 1. In this utility model, through the coordinated arrangement of the bracket and the pressure frame, after each bend of the serpentine tube, the first drive motor drives the extension seat to rotate the bracket and the pressure frame 180 degrees. Then, the second drive motor drives the pressure frame to rotate downwards 90 degrees. Next, the first drive motor drives the extension seat to rotate the bracket and the pressure frame in the opposite direction 180 degrees. After this, the next bending operation can be performed. Then, the second drive motor drives the pressure frame to rotate 90 degrees until it is pressed against the upper end face of the serpentine tube. The above steps are repeated to ensure that the serpentine tube will not deform during the rotation process, thereby improving the forming quality.

[0016] 2. In this utility model, annular grooves of different diameters are equidistantly arranged from top to bottom on the forming column. The forming column, together with the lifting drive device, can make the annular grooves of different diameters flush with the axis of the feeding direction of the serpentine tube, so as to meet the bending requirements of different arc lengths. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;

[0019] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in the inverted serpentine tube state;

[0020] Figure 3 for Figure 2 A three-dimensional structural diagram of the serpentine tube in its flipped state;

[0021] Figure 4 This is a three-dimensional structural diagram of the flipping mechanism in the reset state in this embodiment;

[0022] Figure 5 This is a schematic diagram of the flipping mechanism in this embodiment;

[0023] Figure 6 This is a schematic diagram of the forming part and the bending mechanism in this embodiment.

[0024] In the diagram: 1. Frame; 2. Pipe feeding device; 3. Serpentine pipe; 4. Forming section; 401. Pipe groove; 41. Forming column; 42. First mounting plate; 43. Second mounting plate; 5. Pipe bending mechanism; 51. Electric turntable; 52. Pipe bending block; 53. Electric push rod one; 54. Moving seat; 55. Electric push rod two; 6. Tilting mechanism; 61. Bracket; 62. Press frame; 63. First drive motor; 64. Extension seat; 65. Second drive motor. Detailed Implementation

[0025] 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.

[0026] Example: Reference Figure 1-6 The serpentine pipe bending machine shown includes a frame 1, a pipe feeding device 2, a forming part 4, and a bending mechanism 5. The pipe feeding device 2 is horizontally and reciprocally slidably mounted on the upper end of the frame 1. The forming part 4 and the bending mechanism 5 are mounted on the upper end of the frame 1 on one side of the pipe feeding terminal of the pipe feeding device 2.

[0027] The forming part 4 includes a forming column 41 and a lifting drive device installed inside the frame 1. The output end of the lifting drive device is connected to the bottom end of the forming column 41. The forming column 41 is provided with annular grooves 401 of different diameters at equal intervals from top to bottom. The forming column 41, together with the lifting drive device, can make the annular grooves 401 of different diameters flush with the axis of the feeding direction of the serpentine tube 3, so as to meet the bending requirements of different arc lengths.

[0028] Considering the wear of the forming column 41, and to facilitate the replacement of the forming column 41, the forming part 4 also includes a first mounting plate 42 and a second mounting plate 43. The first mounting plate 42 is rotatably mounted on the bottom end of the forming column 41, and the second mounting plate 43 is fixed to the output end of the lifting drive device. The first mounting plate 42 and the second mounting plate 43 are detachably connected.

[0029] The pipe bending mechanism 5 includes an electric turntable 51 and a pipe bending block 52. The electric turntable 51 is rotatably mounted on the inner side of the frame 1, and the rotation axis of the electric turntable 51 coincides with the axis of the forming column 41. An electric push rod 53 is horizontally fixed to the side end of the electric turntable 51 through a mounting bracket. A movable seat 54 is fixed to the output end of the electric push rod 53. An electric push rod 55 is mounted on the upper end of the movable seat 54. The top output end of the electric push rod 55 is fixed to the pipe bending block 52. The electric turntable 51 is used to drive the pipe bending block 52 to rotate around the forming column 41 in a circular path, so as to cooperate with the annular pipe groove 401 to bend the pipe sent out by the pipe feeding device 2 to obtain a serpentine pipe 3.

[0030] To prevent the serpentine tube 3 from deforming due to its own weight during the flipping process, the serpentine tube bending machine also includes a flipping mechanism 6. The flipping mechanism 6 is located on the side of the forming section 4 away from the tube feeding device 2. Specifically, the flipping mechanism 6 includes a bracket 61 and a pressure frame 62, which are respectively attached to both sides of the serpentine tube 3. A fixed frame is installed at the upper end of the frame 1, and a flipping drive assembly for driving the bracket 61 and the pressure frame 62 to flip is installed on the fixed frame. The flipping assembly includes a first drive motor 6. 3 and extension seat 64, bracket 61 and pressure frame 62 are all mounted on extension seat 64. First drive motor 63 is mounted on fixed frame. The output shaft of first drive motor 63 is on the same straight line as the axis of the feeding direction of serpentine tube 3, and the output shaft of first drive motor 63 is fixed to extension seat 64. Bracket 61 is fixed to the side end of extension seat 64. Pressure frame 62 is rotatably mounted on the side end of extension seat 64. Second drive motor 65 that drives pressure frame 62 to rotate is also mounted on the side end of extension seat 64.

[0031] Based on the above structural arrangement, after each bend of the serpentine tube 3, the first drive motor 63 drives the extension seat 64 to carry the bracket 61 and the pressure frame 62 to assist the serpentine tube 3 in rotating 180 degrees. Then, the second drive motor 65 drives the pressure frame 62 to rotate downwards by 90 degrees. Then, the first drive motor 63 drives the extension seat 64 to carry the bracket 61 and the pressure frame 62 to rotate in the opposite direction by 180 degrees. After that, the tube feeding device 2 and the forming part 4 can cooperate with the tube bending mechanism 5 to perform the next bending operation. Then, the second drive motor 65 drives the pressure frame 62 to rotate 90 degrees until it is pressed against the upper end face of the serpentine tube 3. The above steps can be repeated to ensure that the serpentine tube 3 will not deform during the rotation process, thereby improving the forming quality.

[0032] The working principle of this utility model is as follows: the pipe feeding device 2 moves horizontally back and forth along the frame 1 to transport the pipe toward one side of the forming part 4. The electric turntable 51 is used to drive the pipe bending block 52 to rotate around the forming column 41 in a circular path, so as to cooperate with the annular pipe groove 401 to bend the pipe fed by the pipe feeding device 2 to obtain the serpentine pipe 3.

[0033] After each bend of the serpentine tube 3, the first drive motor 63 drives the extension seat 64 to carry the bracket 61 and the pressure frame 62 to assist the serpentine tube 3 in rotating 180 degrees. Then, the second drive motor 65 drives the pressure frame 62 to rotate downwards by 90 degrees. Then, the first drive motor 63 drives the extension seat 64 to carry the bracket 61 and the pressure frame 62 to rotate in the opposite direction by 180 degrees. After that, the tube feeding device 2 and the forming part 4 can be used in conjunction with the tube bending mechanism 5 to perform the next bending operation. Then, the second drive motor 65 drives the pressure frame 62 to rotate 90 degrees until it is pressed against the upper end face of the serpentine tube 3. After that, the above steps can be repeated.

[0034] It should be further explained that the upper end of the frame 1 is also provided with a support structure (not shown in the figure) for supporting the serpentine tube 3 in a horizontal state, which is also to prevent the serpentine tube 3 from deforming under its own weight. In addition, the structure and cooperation method of the tube feeding device 2, the forming part 4 and the tube bending mechanism 5 mentioned above are all existing technologies and will not be described in detail here. Moreover, the improvements made in the number and diameter of the annular tube groove 401 in the forming part 4 in this solution can be fully used to cooperate with the existing tube bending mechanism 5. In particular, the operation procedure can be simply modified by conventional technical means, which will not be described in detail here.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A serpentine pipe bending machine comprising a frame (1), a pipe feeding device (2), a forming section (4) and a pipe bending mechanism (5), the pipe feeding device (2) being horizontally reciprocatingly slidably mounted on the upper end of the frame (1), the forming section (4) and the pipe bending mechanism (5) being mounted on the upper end of the frame (1) on the side of the pipe feeding terminal end of the pipe feeding device (2), characterized in that: Also include a turnover mechanism (6), the turnover mechanism (6) is located in the forming part (4) away from the side of the pipe feeding device (2); The turnover mechanism (6) includes a bracket (61) and a pressing frame (62), the bracket (61) and the pressing frame (62) are respectively attached to the two sides of the serpentine pipe (3) are provided; The upper end of the rack (1) is provided with a fixed frame, and the fixed frame is provided with a turnover driving assembly for driving the bracket (61) and the pressing frame (62) to overturn.

2. A serpentine tube bender according to claim 1, characterized in that: The turnover assembly includes a first driving motor (63) and an extension seat (64), the bracket (61) and the pressing frame (62) are installed on the extension seat (64), the first driving motor (63) is installed on the fixed frame, the output shaft of the first driving motor (63) is located on the same straight line with the axis of the pipe feeding direction of the serpentine pipe (3), and the output shaft of the first driving motor (63) is fixed with the extension seat (64).

3. A serpentine tube bender according to claim 2, characterized in that: The bracket (61) is fixed to the side end of the extension seat (64), the pressing frame (62) is rotatably installed on the side end of the extension seat (64), and the side end of the extension seat (64) is also provided with a second driving motor (65) for driving the pressing frame (62) to rotate.

4. A serpentine tube bender according to claim 1, wherein: The forming part (4) includes a forming column (41) and a lifting driving device installed on the inner side of the rack (1), the output end of the lifting driving device is connected with the bottom end of the forming column (41), and the forming column (41) is provided with annular pipe grooves (401) with different diameters at equal intervals from top to bottom.

5. A serpentine tube bender according to claim 4, characterized in that: The forming part (4) further includes a first mounting disc (42) and a second mounting disc (43), the first mounting disc (42) is rotatably installed on the bottom end of the forming column (41), the second mounting disc (43) is fixed to the output end of the lifting driving device, and the first mounting disc (42) and the second mounting disc (43) are detachably connected.

6. A serpentine tube bender according to claim 4, wherein: The pipe bending mechanism (5) includes a motorized turntable (51) and a pipe bending block (52), the motorized turntable (51) is rotatably installed on the inner side of the rack (1), and the rotation axis of the motorized turntable (51) coincides with the axis of the forming column (41), the side end of the motorized turntable (51) is horizontally fixed with a first electric push rod (53) through a mounting frame, the output end of the first electric push rod (53) is fixed with a moving seat (54), the upper end of the moving seat (54) is installed with a second electric push rod (55), and the top output end of the second electric push rod (55) is fixed with the pipe bending block (52).

Images