Automatic pipe bending device for U-shaped boiler pipe

Abstract

The invention discloses an automatic pipe bending device for a U-shaped boiler pipe, and belongs to the technical field of pipe bending devices. The device mainly comprises a machining table, a feeding assembly, a bending assembly, an auxiliary assembly, a supporting plate, a variable-speed motor, a sliding base, a second equipment box and two sets of guide rods, and a first equipment box is installed on the supporting plate; the output end of the variable-speed motor is provided with a lead screw, the inner wall of the first equipment box is provided with a rail, the second equipment box is provided with a stepping motor, the output end of the stepping motor is provided with a two-way screw rod, and the two-way screw rod is rotationally installed in the second equipment box; and the guide rod is installed in the second equipment box, two sets of pressing plates are arranged on the guide rod in a sliding mode, and the two sets of pressing plates are installed on the two-way screw in a threaded mode. According to the automatic pipe bending device for the U-shaped boiler pipe, through the arrangement of the auxiliary assembly, the boiler pipe is separated from the groove after being bent, so that the boiler pipe is conveniently taken out subsequently, and the effect of separating the boiler pipe from the mold during demolding is achieved.

Description

Technical Field

[0001] This application relates to the field of pipe bending device technology, specifically an automatic pipe bending device for U-shaped boiler tubes. Background Technology

[0002] U-shaped boiler tubes are a special type of pipe used in boiler systems. The tube body is bent in a U-shape. This design allows U-shaped boiler tubes to perform specific functions in the boiler, such as heat exchange, support or guide fluid flow. They are usually part of the boiler's heating surface and participate in the heat transfer and conversion process. During the manufacturing process of U-shaped boiler tubes, bending operations are required to adapt to installation space and layout requirements; For example, the patent with publication number CN202683694U specifically discloses a high-speed automatic pipe bending device. The device fixes the workpiece on the clamping device. When the control switch is turned on, the second motor drives the clamping device to move forward. The workpiece enters the guide channel and the fixing block presses the workpiece. At this time, the first motor drives the rotating block to rotate. The guide block and the rotating block rotate around the guide wheel at the same time, thereby driving the workpiece to bend. However, although the above-mentioned patent can realize the bending operation of boiler tubes, when the boiler tube is removed after bending, the boiler tube may get stuck with the bending part because the boiler tube is always pressed on the bending part by the fixing block. At this time, the staff needs to shake the steel tube left and right repeatedly to separate it from the mold and push it out of the mold at the same time, which makes it difficult to remove. Therefore, it is necessary to provide an automatic U-shaped boiler tube bending device to solve the above problems.

[0003] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0004] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide an automatic U-shaped boiler tube bending device that achieves the effect of separating the boiler tube from the mold during demolding.

[0005] The technical solution adopted by this application to solve its technical problem is: an automatic U-shaped boiler tube bending device, including a processing table; a feeding assembly, which is set on the processing table; a bending assembly, which is set on the processing table and has a mounting bracket suitable for installation; an auxiliary assembly, which is set on the bending assembly and includes: a support plate, which is installed on one side of the mounting bracket and has a first equipment box mounted on the support plate; a variable speed motor, which is installed on the first equipment box and has a lead screw mounted on its output end, the lead screw being rotatably installed inside the first equipment box; a slide block, which is threaded onto the lead screw and has a track installed on the inner wall of the first equipment box, the slide block being slidably mounted on the track; a second equipment box, which is installed on the slide block and has a stepper motor mounted on it, the stepper motor having a bidirectional screw mounted on its output end, the bidirectional screw being rotatably installed inside the second equipment box; and two sets of guide rods, which are installed inside the second equipment box and have two sets of pressure plates slidably mounted on them, the two sets of pressure plates being threaded onto the bidirectional screw.

[0006] Furthermore, the second equipment box has an opening, one end of the two sets of pressure plates passes through the opening, the track is located on one side of the lead screw, and the first equipment box has two sets of through slots, one end of the slide passes through the two sets of through slots.

[0007] Furthermore, the feeding assembly includes a moving module mounted on the processing table, a protective shell installed on the output end of the moving module, a hollow tube installed inside the protective shell, and a gripper provided at the end of the hollow tube away from the protective shell.

[0008] Furthermore, the bending assembly includes a mounting plate mounted on one end of the processing table, on which a mounting plate is mounted, and on which a fixing box is mounted.

[0009] Furthermore, a rotating shaft is rotatably mounted on the fixed box, and a drive motor is mounted on the bottom of the fixed box. The output end of the drive motor is connected to a synchronous belt set on the rotating shaft, and the synchronous belt set is located inside the fixed box.

[0010] Furthermore, the mounting bracket is mounted on the rotating shaft, and a horizontal plate is installed inside the mounting bracket. A connecting plate is slidably mounted on the top of the horizontal plate, and a top plate is mounted on one end of the connecting plate. A second pneumatic push rod is mounted on the bottom of the horizontal plate, and the output end of the second pneumatic push rod is connected to the top plate.

[0011] Furthermore, a support base is installed on the connecting plate, a top block is installed on one side of the support base, a bending part is installed on the rotating shaft, the top block corresponds to two sets of bending parts, a groove is provided on the outer circumference of the bending part, the bending part is U-shaped, and a slot is provided on the top block.

[0012] Furthermore, an electric cylinder is installed on the bending section, and a push plate is provided at the output end of the electric cylinder. The push plate is located on one side of the bending section. A support frame is installed on the fixing box. The support frame is located on one side of the top block. A fixing plate is installed on the top of the support frame, and a second auxiliary part is provided on the fixing plate.

[0013] Furthermore, a mounting box is installed on one side of the fixed box, a slider is slidably mounted on the mounting box, a first pneumatic push rod is installed inside the mounting box, the output end of the first pneumatic push rod is connected to the slider, a base plate is installed on the top of the slider, and a mounting seat is installed on the top of the base plate.

[0014] Furthermore, a cylinder is installed on the mounting base, a connecting seat is installed at the output end of the cylinder, a pad is installed on the connecting seat, two sets of guide rails are installed on one side of the pad, the two sets of guide rails are slidably set on one side of the mounting base, and a clamping plate is installed on the other side of the pad, with an arc groove opened on the clamping plate.

[0015] The beneficial effects of this application are: the U-shaped boiler tube automatic bending device provided by this application, through the setting of auxiliary components, separates the boiler tube from the groove after bending, so as to facilitate the subsequent removal of the boiler tube and achieve the effect of separating the boiler tube from the mold during demolding.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of an automatic U-shaped boiler tube bending device according to this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 2 Enlarged view of point B in the middle; Figure 4 for Figure 2 A partial sectional view of the central structure; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 for Figure 1 A partial structural diagram from another perspective; Figure 7 for Figure 6 Enlarged view of point D in the middle; Figure 8 for Figure 1 A schematic diagram of another state in the middle; Figure 9 for Figure 8 Enlarged view of point E in the middle; Figure 10 for Figure 1 Top view of the middle section structure; Figure 11 for Figure 1 Side view of the middle section structure; The following are the labeling elements in the figure: 1. Processing table; 2. Feeding assembly; 21. Moving module; 22. Protective shell; 23. Hollow tube; 24. Gripper; 3. Bending assembly; 31. Bending section; 301. Groove; 32. Guide rail; 321. Clamping plate; 33. Pad plate; 34. Cylinder; 35. Fixing box; 36. Mounting base; 361. Base plate; 37. Mounting plate; 38. Mounting box; 39. Slider; 4. Connecting seat; 41. Mounting bracket; 42. Top plate; 43. Rotating shaft; 44. Connecting plate; 45. Support seat; 46. Top block; 461. Slot; 47. Drive motor; 48. Synchronous belt assembly; 5. Auxiliary components; 51. First auxiliary part; 501. First equipment box; 52. Variable speed motor; 521. Support plate; 53. Through slot; 54. Slide; 541. Lead screw; 542. Rail; 55. Second equipment box; 56. Stepper motor; 57. Pressure plate; 58. Guide rod; 59. Bidirectional screw; 510. Electric cylinder; 511. Push plate; 6. Support frame; 61. Fixing plate; 62. Second auxiliary part. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] Example 1: As Figures 1-2As shown, this application provides an automatic U-shaped boiler tube bending device, including a processing table 1, on which a feeding assembly 2 is provided. The feeding assembly 2 is used to clamp the boiler tube, specifically: The feeding assembly 2 includes a moving module 21 fixedly installed on the processing table 1. The moving module 21 uses the existing ball screw and linear guide 32 as the transmission mechanism and the drive device as the power source. The drive device can be an electric motor or a hydraulic motor. The specific structure and working principle are existing technologies and will not be described in detail here. A protective shell 22 is fixedly installed on the output end of the moving module 21, and a hollow tube 23 is fixedly installed inside the protective shell 22. A clamp 24 is provided at the end of the hollow tube 23 away from the protective shell 22 so that the boiler tube to be processed can be passed through the hollow tube 23 and clamped by the clamp 24. One end of the clamped boiler tube extends out of the clamp 24, so that the boiler tube can be driven by the moving module 21 to move in the horizontal direction, and then the extended part of the boiler tube can be sent into the subsequent bending process. For ease of explanation, the direction of movement of the moving module 21 is defined as the Y direction, i.e., as shown below. Figure 1 The left and right directions are shown; A bending assembly 3 is provided at one end of the processing table 1. The bending assembly 3 is used for bending boiler tubes. like Figures 1-2 and Figure 6 As shown, the bending assembly 3 includes a mounting plate 37 fixedly installed at one end of the processing table 1. A fixed box 35 is fixedly installed on the mounting plate 37. A rotating shaft 43 is rotatably installed on the fixed box 35. A drive motor 47 is fixedly installed at the bottom of the fixed box 35. A synchronous belt group 48 is provided between the output end of the drive motor 47 and the rotating shaft 43. The synchronous belt group 48 is located inside the fixed box 35 so that the rotating shaft 43 can be driven to rotate by the synchronous belt group 48 under the drive of the drive motor 47. Meanwhile, a mounting bracket 41 is fixedly installed on the rotating shaft 43, and the mounting bracket 41 can rotate synchronously with the rotating shaft 43; A horizontal plate (not shown in the figure) is fixedly installed inside the mounting frame 41. A connecting plate 44 is slidably provided on the top of the horizontal plate. A top plate 42 is fixedly installed on one end of the connecting plate 44. At the same time, a second pneumatic push rod (not shown in the figure) is fixedly installed at the bottom of the horizontal plate. The output end of the second pneumatic push rod is connected to the top plate 42 so that the connecting plate 44 can be moved by the top plate 42 under the drive of the second pneumatic push rod. like Figure 2 , Figure 5 and Figure 11As shown, a support base 45 is fixedly installed on the connecting plate 44, a top block 46 is fixedly installed on one side of the support base 45, and a bending part 31 is fixedly installed on the rotating shaft 43. The top block 46 and the bending part 31 correspond to each other, and a groove 301 is provided on the outer peripheral surface of the bending part 31. At the same time, a slot 461 adapted to the boiler tube is provided on the top block 46. Furthermore, as the connecting plate 44 moves, the support base 45 synchronously drives the top block 46 to move closer to or away from the bending part 31. When it moves closer to the bending part 31, it forms a circle with the groove 301 suitable for clamping the boiler tube (e.g., Figure 11 ); Furthermore, the outer ring of the bending part 31 is U-shaped to match the bent boiler tube, thereby ensuring the shape of the boiler tube after bending. In the initial state, the top block 46 is away from the bending part 31. After the boiler tube held by the feeding assembly 2 passes between the slot 461 and the groove 301, the second pneumatic push rod drives the connecting plate 44 to move through the top plate 42, thereby driving the top block 46 to approach the groove 301 to clamp the boiler tube. Then, the drive motor 47 is started, and the rotating shaft 43 is driven to rotate 180° through the synchronous belt group 48, thereby driving the mounting bracket 41 to rotate 180° synchronously. This causes the top block 46 and the bending part 31 to rotate along the axis of the rotating shaft 43. Since the boiler tube is clamped by the top block 46 and the bending part 31 at this time, the clamped part of the boiler tube will rotate synchronously, thereby causing the boiler tube to deform along the outer circle of the bending part 31 and finally bend into the required U shape. A mounting box 38 is fixedly installed on one side of the fixed box 35. A slider 39 is slidably mounted on the mounting box 38. A first pneumatic push rod (not shown in the figure) is provided inside the mounting box 38. The output end of the first pneumatic push rod is connected to the slider 39. Meanwhile, a base plate 361 is fixedly installed on the top of the slider 39. A mounting base 36 is fixedly mounted on the top of the base plate 361. So that the slider 39 can be driven to move on the mounting box 38 under the drive of the first pneumatic push rod, and the mounting base 36 can be moved synchronously. For ease of explanation, the extension and retraction direction of the first pneumatic push rod is defined as the X direction. Meanwhile, a cylinder 34 is fixedly installed on the mounting base 36. The cylinder 34 extends and retracts along the Y direction. A connecting base 4 is fixedly installed at the output end of the cylinder 34. A pad 33 is fixedly installed on the connecting base 4. Two sets of guide rails 32 arranged along the Y direction are fixedly installed on one side of the pad 33. The guide rails 32 are slidably arranged on one side of the mounting base 36. So that under the drive of cylinder 34, the pad 33 can be moved along the Y direction through connecting seat 4, and the guide rail 32 can be moved to slide on one side of mounting seat 36 simultaneously. like Figure 10As shown, a clamping plate 321 is fixedly installed on the other side of the pad 33. The clamping plate 321 is located on one side of the top block 46, and the clamping plate 321 is provided with an arc groove that is compatible with the boiler tube, so that when the pad 33 moves, the clamping plate 321 moves synchronously. In the initial state, the clamping plate 321 is away from the bending part 31 in the X direction. When the top block 46 approaches the bending part 31 and clamps the boiler tube, the clamping plate 321 moves towards the bending part 31 synchronously under the action of the first pneumatic push rod until the groove of the clamping plate 321 engages with the boiler tube. When the drive motor 47 drives the top block 46 and the bending part 31 to rotate 180° to bend the boiler tube, the clamping plate 321, driven by the cylinder 34, moves synchronously and gradually closer to the bending part 31 along the Y direction until one end of the clamping plate 321 is flush with one end of the bending part 31. This ensures that the boiler tube is always pressed by the clamping plate 321 during bending, preventing it from being over-bent and damaged. In summary, during bending, the boiler tube is passed through the hollow tube 23 and clamped by the jaws 24. Then, the moving module 21 is activated to pass one end of the boiler tube through the top block 46 and the groove 301. Then, the second pneumatic push rod is activated to drive the top block 46 to gradually approach the bending part 31 to clamp the boiler tube. Then, the first pneumatic push rod is activated, causing the clamping plate 321 to gradually approach the boiler tube in the X direction until the arc groove on the clamping plate 321 engages with the boiler tube. At this time, the drive motor 47 is activated, which drives the rotating shaft 43 to rotate via the synchronous belt group 48, thereby causing the mounting bracket 41 to gradually rotate 180°, and simultaneously causing the bending part 31 and the top block 46 to gradually rotate 180°, thus bending the boiler tube 180° to form a U-shape. Figure 9 ); Furthermore, the cylinder 34 is activated, which drives the clamping plate 321 to move synchronously in the Y direction, so as to keep pressing the pipe and avoid excessive bending and damage to the boiler tube. After bending, the second pneumatic push rod drives the top block 46 away from the boiler tube, and the first pneumatic push rod drives the clamping plate 321 away from the boiler tube. Then, the bent end of the boiler tube is pushed out of the groove 301 along the Y direction.

[0021] Example 2: Although the above process can achieve the bending operation of the boiler tube, the boiler tube is always pressed in the groove 301 of the bending part 31 during the bending process, which may cause the boiler tube to get stuck in the groove 301 of the bending part 31. At this time, the operator needs to shake the steel tube left and right repeatedly to separate it from the mold and push it out of the mold at the same time to remove it, which makes it difficult to demold. To solve this problem, an auxiliary component 5 is provided on the bending assembly 3, which is used for the separation operation of the boiler tube from the groove 301; like Figure 1 and Figures 3-5 As shown, the auxiliary component 5 includes a support plate 521 fixedly installed on one side of the mounting bracket 41. A first auxiliary part 51 is provided on the support plate 521. The first auxiliary part 51 is at a certain distance from the mounting bracket 41. The first auxiliary part 51 includes a first device box 501 fixedly installed on the support plate 521. The first device box 501 is located on one side of the lower top block 46. A variable speed motor 52 is fixedly installed at one end of the first device box 501. A lead screw 541 is fixedly installed at the output end of the variable speed motor 52. The lead screw 541 is rotatably installed inside the first device box 501, and a slide block 54 is threaded on the lead screw 541. A track 542 is fixedly installed on the side wall of the first equipment box 501. The track 542 is located on one side of the lead screw 541, and the slide block 54 is slidably disposed on the track 542. Under the drive of the variable speed motor 52, the lead screw 541 is driven to rotate, so as to drive the slide block 54 to move along the axis of the lead screw 541. Under the constraint of the track 542, its movement direction is restricted. Continue to refer to Figure 5 Two sets of through slots 53 are provided on the first device box 501. One end of the slide 54 passes through the two sets of through slots 53. At the same time, a second device box 55 is fixedly installed at the end of the slide 54 that passes through the through slots 53. A stepper motor 56 is fixedly installed on the second device box 55. A bidirectional screw 59 is fixedly installed at the output end of the stepper motor 56. The bidirectional screw 59 is rotatably installed inside the second device box 55. Two sets of pressure plates 57 are threaded on the bidirectional screw 59. Two sets of guide rods 58 are fixedly installed inside the second device box 55. The two sets of guide rods 58 are located on both sides of the bidirectional screw 59. It should be noted that the second equipment box 55 has an opening (not shown in the figure). One end of the two sets of pressure plates 57 passes through the opening to avoid interference with their movement. The two sets of pressure plates 57 are located on one side of the lower top block 46. Driven by the stepper motor 56, the bidirectional screw 59 is rotated, so that the two sets of pressure plates 57 move closer or further apart along the axis of the bidirectional screw 59. When the two sets of pressure plates 57 move closer together, they can wrap around the outer ring of the boiler tube. Under the restriction of the two sets of guide rods 58, their movement direction is fixed. In summary, in the initial state, the two sets of pressure plates 57 are far apart from each other and far away from the bending part 31, so as to avoid mechanical interference when the feeding assembly 2 passes the boiler tube through the slot 461 and the groove 301, and at this time the boiler tube is located between the two sets of pressure plates 57. When the boiler tube is bent and the top block 46 and clamping plate 321 are reset, the boiler tube is engaged in the groove 301. The stepper motor 56 is started to drive the bidirectional screw 59 to rotate, which in turn drives the two sets of pressure plates 57 to move closer to each other and close to cover the outer ring of the boiler tube. At this time, there is a certain gap between the side walls of the two sets of pressure plates 57 and the boiler tube. Then, the variable speed motor 52 is started, which drives the lead screw 541 to rotate at a constant speed, thereby driving the slide block 54 along the axis of the lead screw 541, and driving the second equipment box 55 to gradually move away from the bending part 31, thereby driving the side walls of the two sets of pressure plates 57 to gradually approach the boiler tube. When the side walls of the two sets of pressure plates 57 abut against the outer circumference of the boiler tube, the variable speed motor 52 changes speed and drives the lead screw 541 to rotate slowly, so that the two sets of pressure plates 57 slowly pull the boiler tube, thereby moving the boiler tube away from the groove 301, so that the boiler tube and the groove 301 are slowly separated, avoiding the boiler tube and the groove 301 from being too tightly attached, which would affect the subsequent separation. It should be noted that the distance that the two sets of pressure plates 57 move the boiler tubes should not be too large, in order to prevent damage to the boiler tubes. After the two sets of pressure plates 57 move the boiler tube a certain distance, the variable speed motor 52 moves in the opposite direction so that the two sets of pressure plates 57 separate from the side wall of the boiler tube. At this time, although the boiler tube will be reset under the action of internal stress, due to the previous pulling action, there is a certain gap between the boiler tube and the groove 301. At this time, the boiler tube is pushed out of the groove 301 along the Y direction and then the boiler tube is taken out. After the boiler tube is removed, the stepper motor 56 starts and drives the bidirectional screw 59 to rotate in the opposite direction, which in turn drives the two sets of pressure plates 57 to move away from each other. The variable speed motor 52 continues to drive the lead screw 541 to rotate, which drives the second equipment box 55 to reset, so as to avoid interference with the feeding of the boiler tube during the next boiler tube bending operation. It should be noted that a support frame 6 is fixedly installed on the fixed box 35. The support frame 6 is located on the other side of the top block 46. A fixed plate 61 is fixedly installed on the top of the support frame 6. A second auxiliary part 62 with the same structure as the first auxiliary part 51 is provided on the fixed plate 61 so that after bending, the two ends of the U-shaped boiler tube can be separated from the groove 301 for easier removal. Although the above process can separate the bent boiler tube from the groove 301, manual separation is still required when pushing the boiler tube out of the groove 301 along the Y direction. Furthermore, the length of the boiler tube extending out of the groove 301 cannot be controlled when feeding the boiler tube, which makes it impossible to control the position where the bending occurs when bending the boiler tube, i.e., the position where the top block 46 is clamped on the boiler tube. To solve this problem, such as Figure 2As shown, an electric cylinder 510 is fixedly installed on the bending part 31. The output end of the electric cylinder 510 is provided with a push plate 511. The push plate 511 is located on one side of the bending part 31 and is on the same axis as the axis of the groove 301. So that when the boiler tube is fed by the feeding assembly 2, one end of the boiler tube can be blocked, and the length of the extension of the electric cylinder 510 can be controlled to control the distance between the push plate 511 and the bending part 31, thereby controlling the length of the boiler tube extending out of the bending part 31, and thus controlling the position of the top block 46 clamped on the boiler tube. Furthermore, after the auxiliary component 5 separates the boiler tube from the groove 301, the electric cylinder 510 is activated to drive the push plate 511 to push the boiler tube out of the groove 301 along the Y direction, thereby avoiding the need for manual removal by the staff.

[0022] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic U-shaped boiler tube bending device, characterized in that: include: Processing table (1); A feeding assembly (2) is disposed on the processing table (1); A bending assembly (3) is disposed on the processing table (1) and the bending assembly (3) has a mounting bracket (41) suitable for installation. Auxiliary component (5), which is disposed on the bending component (3), includes: A support plate (521) is mounted on one side of the mounting bracket (41), and a first device box (501) is mounted on the support plate (521). A variable speed motor (52) is mounted on the first equipment box (501), and a lead screw (541) is mounted on the output end of the variable speed motor (52). The lead screw (541) is rotatably mounted inside the first equipment box (501). A slide (54) is threaded onto the lead screw (541), and a track (542) is installed on the inner wall of the first equipment box (501). The slide (54) is slidably disposed on the track (542). The second device box (55) is mounted on the slide (54). A stepper motor (56) is mounted on the second device box (55). A bidirectional screw (59) is mounted on the output end of the stepper motor (56). The bidirectional screw (59) is rotatably mounted inside the second device box (55). Two sets of guide rods (58) are installed inside the second equipment box (55). Two sets of pressure plates (57) are slidably arranged on the guide rods (58). The two sets of pressure plates (57) are threaded onto the bidirectional screw (59).

2. The automatic U-shaped boiler tube bending device according to claim 1, characterized in that: The second equipment box (55) has an opening, one end of the two sets of pressure plates (57) passes through the opening, the track (542) is located on one side of the lead screw (541), the first equipment box (501) has two sets of through slots (53), one end of the slide (54) passes through the two sets of through slots (53).

3. The automatic U-shaped boiler tube bending device according to claim 1, characterized in that: The feeding assembly (2) includes a moving module (21) installed on the processing table (1). A protective shell (22) is installed on the output end of the moving module (21). A hollow tube (23) is installed inside the protective shell (22). A gripper (24) is provided at the end of the hollow tube (23) away from the protective shell (22).

4. The automatic U-shaped boiler tube bending device according to claim 1, characterized in that: The bending assembly (3) includes a mounting plate (37) installed at one end of the processing table (1), on which a mounting plate (37) is mounted, and on which a fixing box (35) is mounted.

5. The automatic U-shaped boiler tube bending device according to claim 4, characterized in that: A rotating shaft (43) is rotatably mounted on the fixed box (35), and a drive motor (47) is mounted on the bottom of the fixed box (35). A synchronous belt group (48) is connected to the output end of the drive motor (47) and the rotating shaft (43) for transmission. The synchronous belt group (48) is located inside the fixed box (35).

6. The automatic U-shaped boiler tube bending device according to claim 5, characterized in that: The mounting bracket (41) is mounted on the rotating shaft (43). A horizontal plate is installed inside the mounting bracket (41). A connecting plate (44) is slidably arranged on the top of the horizontal plate. A top plate (42) is installed at one end of the connecting plate (44). A second pneumatic push rod is installed at the bottom of the horizontal plate. The output end of the second pneumatic push rod is connected to the top plate (42).

7. The automatic U-shaped boiler tube bending device according to claim 6, characterized in that: A support base (45) is installed on the connecting plate (44). A top block (46) is installed on one side of the support base (45). A bending part (31) is installed on the rotating shaft (43). The top block (46) corresponds to two sets of bending parts (31) respectively. A groove (301) is provided on the outer peripheral surface of the bending part (31). The bending part (31) is U-shaped. A slot (461) is provided on the top block (46).

8. The automatic U-shaped boiler tube bending device according to claim 7, characterized in that: An electric cylinder (510) is installed on the bending part (31). A push plate (511) is provided at the output end of the electric cylinder (510). The push plate (511) is located on one side of the bending part (31). A support frame (6) is installed on the fixing box (35). The support frame (6) is located on one side of the top block (46). A fixing plate (61) is installed on the top of the support frame (6). A second auxiliary part (62) is provided on the fixing plate (61).

9. The automatic U-shaped boiler tube bending device according to claim 4, characterized in that: A mounting box (38) is installed on one side of the fixed box (35). A slider (39) is slidably arranged on the mounting box (38). A first pneumatic push rod is arranged inside the mounting box (38). The output end of the first pneumatic push rod is connected to the slider (39). A base plate (361) is installed on the top of the slider (39). A mounting seat (36) is installed on the top of the base plate (361).

10. The automatic U-shaped boiler tube bending device according to claim 9, characterized in that: A cylinder (34) is installed on the mounting base (36). A connecting seat (4) is installed at the output end of the cylinder (34). A pad (33) is installed on the connecting seat (4). Two sets of guide rails (32) are installed on one side of the pad (33). The two sets of guide rails (32) are slidably disposed on one side of the mounting base (36). A clamping plate (321) is installed on the other side of the pad (33). An arc groove is provided on the clamping plate (321).

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