Automatic pipe bending machine for circular pipe

Abstract

The invention belongs to the technical field of round pipe bending, and particularly relates to an automatic round pipe bending machine which comprises a machining table, a fixing frame is fixedly connected to the front side of the machining table, a bending wheel is rotationally connected to the fixing frame through a rotating shaft, the rotating shaft is driven by a driving assembly, and a clamping mechanism is arranged on the machining table. A fixing mechanism and a limiting mechanism are arranged at the position, close to the bending wheel, of the machining table, and a horizontal supporting section used for being matched with the fixing mechanism to fix a bent pipe is arranged on the surface of the peripheral side of the bending wheel. Spatial interference of a bent structure can be avoided without replacing the abutting block, compared with a traditional mode that abutting block dies of different models are frequently replaced, the die replacement operation is greatly reduced, the bending time is saved, the equipment utilization rate and the machining takt are effectively improved, and the production efficiency is improved. And the problems of insufficient clamping force and non-uniform pipe slippage or deformation caused by insufficient contact area of a traditional small abutting block can be effectively avoided, and the bending precision and the product quality are guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe bending, and particularly relates to an automatic pipe bending machine for pipes. BACKGROUND

[0002] In the pipe bending process, a pipe bending machine is a key device widely used. In the prior art, multi-segment bending is usually achieved by fixing the pipe through a clamping mechanism, and the preset bending point is acted on by a bending wheel and a contact block in cooperation, and local bending is achieved through concentric rotation. After completing a segment of bending, the clamping device pushes the pipe forward, so that the next bending point is positioned at the processing position, and the bending operation is repeated.

[0003] However, this process has obvious limitations in actual application: when the distance between adjacent bending points on the pipe is too small, the structure that has completed bending may interfere with the standard size contact block in subsequent processing, so that the contact block cannot effectively fit the surface of the pipe, thereby hindering normal bending operation. The common countermeasure at present is to replace the contact block with a smaller size to avoid the interference area. Although this method can solve the interference problem to some extent, it still has the following shortcomings: 1) frequent replacement of tooling molds significantly increases the bending time, affecting the utilization rate of the equipment and the processing rhythm. 2) The contact area of the small contact block with the pipe is reduced, which may cause insufficient clamping force, pipe slip or uneven deformation, thereby affecting the bending precision and quality.

[0004] Therefore, there is an urgent need for a pipe bending machine that can improve the processing capacity and stability of multi-segment close-range bending, while reducing the dependence on mold replacement operations, and ensuring the coordinated improvement of product quality and production efficiency. SUMMARY

[0005] In order to solve the above problems, the application provides an automatic pipe bending machine for pipes to solve the problems mentioned in the background art.

[0006] In order to achieve the above object, the embodiment of the present application provides the following technical scheme: the present application provides a kind of automatic pipe bending machine of round pipe, including processing table, the front side of the processing table is fixedly connected with fixed frame, fixed frame is rotatably connected with bending wheel on the fixed frame, the driving assembly is driven by rotating shaft, the clamping mechanism is provided on the processing table, and the fixed mechanism and the limiting mechanism are provided on the processing table and close to the position of bending wheel, and the circumferential surface of bending wheel is provided with a horizontal support section for cooperating with fixed mechanism to fix the bent pipe.A portion of the fixed mechanism includes mounting seat one fixedly connected with rotating shaft by connecting plate, two first air cylinders are provided on mounting seat one, the telescopic end of first air cylinder is fixedly connected with abutment block, one first air cylinder is slidably arranged on mounting seat one by horizontal movement component, another first air cylinder is rotatably arranged on mounting seat one by angle adjusting component, and the first air cylinder connected with angle adjusting component rotates with rotating shaft as center.Two abutment blocks can be dispersed at the head and tail positions of horizontal support section to cooperate with bending wheel to press the bent pipe, and two abutment blocks can also be displaced relative to the bent pipe by horizontal movement component and angle adjusting component, the position of two abutment blocks is adjusted, and the bent pipe is pressed again.

[0007] According to an advantageous embodiment, the clamping mechanism includes a second air cylinder fixedly arranged on the processing table, a motor one fixedly connected to the telescopic end of the second air cylinder, and a three-jaw chuck fixedly connected to the output shaft of the motor one.

[0008] According to an advantageous embodiment, the horizontal movement component includes a rectangular guide seat one fixedly arranged on the mounting seat one, a sliding seat one slidably arranged on the rectangular guide seat one, one of the first air cylinders fixedly arranged on the sliding seat one, a third air cylinder fixedly arranged on one side of the rectangular guide seat one, and the telescopic end of the third air cylinder fixedly connected to the sliding seat one.

[0009] According to an advantageous embodiment, the angle adjusting component includes an arc-shaped guide seat fixedly arranged on the mounting seat one, an arc-shaped sliding plate slidably arranged on the arc-shaped guide seat, one of the first air cylinders fixedly arranged on the upper side of the arc-shaped sliding plate, a locking component arranged on the base of the first air cylinder, a drive gear one rotatably arranged on the mounting seat one close to the arc-shaped sliding plate, a plurality of uniformly distributed tooth blocks fixedly arranged on the curved surface of the arc-shaped sliding plate away from the center along the arc direction, the drive gear one engaged with the plurality of tooth blocks, a motor two fixedly arranged on the lower side of the mounting seat one, and the output shaft of the motor two fixedly connected to the drive gear one.

[0010] According to an advantageous embodiment, the arc-shaped guide seat and the arc-shaped sliding plate are circumferentially rotatable about the rotating shaft through the mounting seat one.

[0011] According to an advantageous embodiment, the locking assembly comprises a U-shaped bolt slidingly arranged on the side wall of the lower base of the first cylinder, the upper end of the spring is fixedly connected with the side wall of the lower base of the first cylinder, the lower end of the spring is fixedly connected with the vertical surface of the U-shaped bolt, the upper side of the horizontal section of the U-shaped bolt is fixedly provided with an iron block, and a power magnet is fixedly arranged on the side wall of the lower base of the first cylinder and located above the iron block, and the upper side of the arc-shaped guide seat is fixedly provided with a plurality of locking holes matched with the U-shaped bolt.

[0012] According to an advantageous embodiment, the limiting mechanism comprises a second mounting seat fixedly arranged on one side of the machining table and located at the rear side of the first mounting seat, a second rectangular guide seat is fixedly arranged on the second mounting seat, a second sliding seat is slidingly arranged on the second rectangular guide seat, the upper side of the second sliding seat is fixedly provided with a fourth cylinder, the telescopic end of the fourth cylinder is fixedly connected with a U-shaped contact plate, one side of the second rectangular guide seat is fixedly provided with a fifth cylinder, and the telescopic end of the fifth cylinder is fixedly connected with the second sliding seat.

[0013] According to an advantageous embodiment, the driving assembly comprises a second driving gear coaxially fixedly sleeved on the rotating shaft, the inner part of the front side of the machining table is fixedly provided with a sixth cylinder, and the telescopic end of the sixth cylinder is fixedly connected with a driving tooth plate, and the driving tooth plate is engaged with the second driving gear.

[0014] Compared with the prior art, the circular pipe automatic pipe bending machine provided by the embodiment of the present application has the following beneficial effects: 1. In the present application, the positions of the two contact blocks are adjusted by the horizontal moving assembly and the angle adjusting assembly. When the distance between adjacent bending points is too short, the front contact block can be controlled to move backward along the horizontal direction and the rear contact block can be controlled to rotate around the rotating shaft as the center to give way. Without replacing the contact blocks, the space interference of the bent structure can be avoided. Compared with the traditional method of frequently replacing contact blocks of different models, the mold changing operation is greatly reduced, the bending time is saved, and the equipment utilization rate and the processing rhythm are effectively improved.

[0015] 2. In the present application, two independent small-volume contact blocks are used to replace the traditional large-volume contact block. The two independent small-volume contact blocks can apply pressure to two points of the bent pipe to ensure that sufficient bending pressure is applied to the bent pipe, effectively avoiding the problems of insufficient clamping force, pipe slip or uneven deformation caused by insufficient contact area of the traditional small contact block, and ensuring the bending precision and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an external first perspective view of the present application.

[0017] Figure 2 It is an external second perspective view of the present application.

[0018] Figure 3 It is a front plan view of the present application.

[0019] Figure 4 It is external perspective view of fixing mechanism in the application.

[0020] Figure 5 It is external perspective view of limiting mechanism in the application.

[0021] Figure 6 It is external perspective view of locking assembly in the application.

[0022] Figure 7 It is top view state schematic diagram of two abutting blocks before bending of first section of bent pipe in the application.

[0023] Figure 8 It is top view state schematic diagram of two abutting blocks when bending of first section of bent pipe in the application.

[0024] Figure 9 It is top view state schematic diagram of two abutting blocks after position adjustment in the application.

[0025] Figure 10 It is first stage top view state schematic diagram when preliminary bending of bent pipe by two abutting blocks after position adjustment in the application.

[0026] Figure 11 It is second stage top view state schematic diagram when preliminary bending of bent pipe by two abutting blocks after position adjustment in the application.

[0027] Figure 12 It is top view state schematic diagram when complete bending of bent pipe by two abutting blocks in the application.

[0028] The reference signs in the drawing: 1, processing table; 2, fixing frame; 3, rotating shaft; 4, bending wheel; 41, horizontal supporting section; 5, driving assembly; 51, driving gear two; 52, driving toothed plate; 6, clamping mechanism; 61, second air cylinder; 62, three-jaw chuck; 7, fixing mechanism; 71, connecting plate; 72, mounting seat one; 73, first air cylinder; 74, abutting block; 75, horizontal moving assembly; 751, rectangular guide seat one; 752, sliding seat one; 753, third air cylinder; 76, angle adjusting assembly; 761, arc-shaped guide seat; 762, arc-shaped sliding plate; 763, locking assembly; 7631, U-shaped bolt; 7632, spring; 7633, iron block; 7634, electrified magnet; 764, driving gear one; 8, limiting mechanism; 81, mounting seat two; 82, rectangular guide seat two; 83, sliding seat two; 84, fourth air cylinder; 85, abutting plate; 86, fifth air cylinder; 9, locking hole; 10, bent pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings Figure 1 - the drawingsFigure 12 The application is further described in detail.

[0030] Please refer to Figure 1 and Figure 2 A round pipe automatic pipe bending machine, comprising a machining table 1, the front side of the machining table 1 is fixedly connected with a fixed frame 2, a bending wheel 4 is rotatably connected with the fixed frame 2 through a rotating shaft 3, the rotating shaft 3 is driven by a driving assembly 5, a clamping mechanism 6 is arranged on the machining table 1, a fixing mechanism 7 and a limiting mechanism 8 are arranged on the machining table 1 and close to the position of the bending wheel 4, and the peripheral surface of the bending wheel 4 is provided with a horizontal supporting section 41 for cooperating with the fixing mechanism 7 to fix the bent pipe 10.

[0031] In specific work, the bent pipe 10 is fixed by the clamping mechanism 6 and the end of the bent pipe 10 is moved to the outside of the bending wheel 4, then the predetermined position of the bent pipe 10 is fixed and limited by the fixing mechanism 7 and the limiting mechanism 8, and the fixing mechanism 7 and the bending wheel 4 are simultaneously driven to rotate by the driving assembly 5 to bend the bent pipe 10.

[0032] Refer to Figure 1 The driving assembly 5 comprises a driving gear two 51 coaxially fixedly sleeved on the rotating shaft 3, a sixth cylinder (not shown in the figure) is fixedly arranged inside the machining table 1 close to the front side, the telescopic end of the sixth cylinder is fixedly connected with a driving tooth plate 52, and the driving tooth plate 52 is engaged with the driving gear two 51. The driving tooth plate 52 is controlled to slide by the sixth cylinder to drive the driving gear two 51 to rotate, so that the rotating shaft 3 can drive the bending wheel 4 and the fixing mechanism 7 to rotate.

[0033] Refer to Figure 1 and Figure 8 The clamping mechanism 6 comprises a second cylinder 61 fixedly arranged on the machining table 1, the telescopic end of the second cylinder 61 is fixedly connected with a motor one, and the output shaft of the motor one is fixedly connected with a three-jaw chuck 62. One end of the bent pipe 10 is fixed by the three-jaw chuck 62, and the three-jaw chuck 62 drives the bent pipe 10 to rotate by the motor one.

[0034] Refer to Figures 1-4 The fixing mechanism 7 comprises a mounting seat one 72 fixedly connected with the rotating shaft 3 through a connecting plate 71, two first cylinders 73 are arranged on the mounting seat one 72, the telescopic end of the first cylinder 73 is fixedly connected with a contact block 74, one first cylinder 73 is slidably arranged on the mounting seat one 72 through a horizontal moving assembly 75, and the other first cylinder 73 is rotatably arranged on the mounting seat one 72 through an angle adjusting assembly 76, and the first cylinder 73 connected with the angle adjusting assembly 76 rotates around the rotating shaft 3 as the center.

[0035] In specific work, when the first section is bent: the front end of the round pipe is moved to the horizontal supporting section 41 on the bending wheel 4 by the second cylinder 61,Figure 7 As shown. Simultaneously, the two contact blocks 74 extend towards the surface of the circular tube via the first cylinder 73 and abut against different positions at the front end of the circular tube, as... Figure 8 As shown. The limiting mechanism 8 limits the remaining part of the round tube. Finally, the rotating shaft 3 rotates, causing the bending wheel 4 and the mounting base 72 to rotate in the same circle, so that the mounting base 72 drives the two abutment blocks 74 to rotate and cooperate with the bending wheel 4 to bend the front end of the bent tube 10.

[0036] When bending the second section: 1. If the next bending point of the round tube is long enough from the first bending point.

[0037] After the two contact blocks 74 and the limiting mechanism 8 separate from the bend 10, the second cylinder 61 extends, causing the bend 10 to move forward a certain distance and controlling the overall rotation of the bend 10 to adjust the position of the bent section. The next bending point of the bend 10 is then moved toward the bending wheel 4 and finally to the predetermined position. The bending process is repeated using the same method as the previous bending, and this cycle continues.

[0038] Second, if the next bend in the round tube is too short from the first bend.

[0039] Step 1, Position Adjustment: The two contact blocks 74 and the limiting mechanism 8 first separate from the bend 10. Then, the front contact block 74 moves backward via the lateral movement component 75, while the rear contact block 74 rotates a certain angle around the pivot 3 via the angle adjustment component 76 to make room, so that the front contact block 74 moves to the position of the rear contact block 74. The rear contact block 74 rotates and adjusts to the next position, such as... Figure 9 As shown.

[0040] The second step involves initial bending. Finally, the second cylinder 61 extends, moving the bent tube 10 forward a certain distance and controlling its rotation to adjust the position of the bent section of the tube 10. At this time, the first contact block 74, driven by the corresponding first cylinder 73, abuts against the designated position of the tube 10, while the second contact block 74 does not contact the surface of the tube 10. Figure 10 As shown. Then, the two contact blocks 74 and the bending wheel 4 rotate together along the center of the rotating shaft 3 at a certain angle, while being limited by the limiting mechanism 8, thus initially bending the pipe 10 (not completely bending), as shown. Figure 11 As shown.

[0041] The third step is complete bending. After the initial bending, the second bending section of the bent pipe 10 forms a curved section. At this point, the next contact block 74 is driven by the corresponding first cylinder 73 to move to the surface of the curved section and make contact. The two contact blocks 74 simultaneously apply pressure to fix the bent pipe 10. Then, in conjunction with the bending wheel 4 and the limiting mechanism 8, the bent pipe 10 is completely bent and formed at this point. Figure 12 As shown.

[0042] Subsequently, the bending of pipe 10 is switched between the two bending scenarios.

[0043] It should be noted that although this solution adds more steps compared to the traditional bending machine method, it still improves bending efficiency while ensuring bending quality, compared to the method of replacing the contact block 74 when bending the pipe 10.

[0044] See Figure 2 and Figure 4 The lateral movement assembly 75 includes a rectangular guide seat 751 fixedly mounted on the mounting base 72, a slide block 752 slidably mounted on the rectangular guide seat 751, a first cylinder 73 fixedly mounted on the slide block 752, and a third cylinder 753 fixedly mounted on one side of the rectangular guide seat 751, with the telescopic end of the third cylinder 753 fixedly connected to the slide block 752. The third cylinder 753 controls the slide block 752 to slide within the rectangular guide seat 751, thereby causing the front abutment block 74 to move horizontally back and forth to adjust its position.

[0045] See Figure 2 and Figure 4 The angle adjustment component 76 includes an arc-shaped guide seat 761 fixedly mounted on a mounting base 72. An arc-shaped slide plate 762 is slidably mounted on the arc-shaped guide seat 761. A first cylinder 73 is fixedly mounted on the upper side of the arc-shaped slide plate 762, and a locking component 763 is provided on the base of the first cylinder 73. A drive gear 764 is rotatably mounted on the mounting base 72 near the arc-shaped slide plate 762. Multiple evenly distributed tooth blocks are fixedly mounted on the curved surface of the arc-shaped slide plate 762 away from the center along its arc direction. The drive gear 764 meshes with the multiple tooth blocks. A second motor is fixedly mounted on the lower side of the mounting base 72, and the output shaft of the second motor is fixedly connected to the drive gear 764. Both the arc-shaped guide seat 761 and the arc-shaped slide plate 762 rotate circumferentially around the pivot 3 through the mounting base 72. At the same time, the arc-shaped slide plate 762 can slide relative to the arc-shaped guide seat 761.

[0046] The drive gear 764 is rotated by the motor 2. The drive gear 764 cooperates with the toothed block on the outside of the arc-shaped slide plate 762 to control the arc-shaped slide plate 762 to slide along the arc-shaped guide seat 761 with the rotating shaft 3 as the center, thereby driving the next abutment block 74 to adjust its position.

[0047] See Figure 4 and Figure 6To ensure the stability of the subsequent contact block 74 when it contacts the bend 10, the locking assembly 763 includes a U-shaped pin 7631. The U-shaped pin 7631 is slidably disposed on the side wall of the lower base of the first cylinder 73. Springs 7632 are sleeved on both vertical sections of the U-shaped pin 7631. The upper end of the spring 7632 is fixedly connected to the side wall of the lower base of the first cylinder 73, and the lower end of the spring 7632 is fixedly connected to the surface of the corresponding vertical section of the U-shaped pin. An iron block 7633 is fixedly disposed on the upper side of the horizontal section of the U-shaped pin 7631. An electromagnet 7634 is fixedly disposed on the side wall of the lower base of the first cylinder 73 and above the iron block 7633. Multiple sets of locking holes 9 adapted to the U-shaped pin 7631 are fixedly disposed on the upper side of the arc-shaped guide seat 761. The U-shaped pin 7631 is inserted into the locking hole 9 on the upper side of the arc-shaped guide seat 761, locking the arc-shaped slide plate 762 and the arc-shaped guide seat 761 relative to each other to ensure their stability. When the arc-shaped slide plate 762 needs to slide, the attraction force generated by the electromagnet 7634 attracts the iron block 7633 to move the U-shaped pin 7631 upward, controlling the U-shaped pin 7631 to exit the locking hole 9, so that the arc-shaped slide plate 762 can slide within the arc-shaped guide seat 761.

[0048] See Figure 2 and Figure 5 The limiting mechanism 8 includes a second mounting base 81 fixedly mounted on one side of the processing table 1 and located behind the first mounting base 72. A rectangular guide seat 82 is fixedly mounted on the second mounting base 81, and a slide seat 83 is slidably mounted on the rectangular guide seat 82. A fourth cylinder 84 is fixedly mounted on the upper side of the slide seat 83. A U-shaped abutment plate 85 is fixedly connected to the telescopic end of the fourth cylinder 84. A fifth cylinder 86 is fixedly mounted on one side of the rectangular guide seat 82, and the telescopic end of the fifth cylinder 86 is fixedly connected to the slide seat 83. Before the bending tube 10 is bent, the fourth cylinder 84 controls the abutment plate 85 to abut against the surface of the bending tube 10, limiting the bending tube 10 during bending. The fifth cylinder 86 controls the movement of the slide seat 83, causing the abutment plate 85 to move with the bending tube 10 during bending.

[0049] This solution uses the horizontal movement component 75 and angle adjustment component 76 of the fixed mechanism 7 to control the front abutment block 74 to move backward in the horizontal direction and the rear abutment block 74 to rotate around the pivot 3 to make room when the distance between adjacent bending points is too short. This avoids spatial interference of the bent structure without replacing the abutment block 74. Compared with the traditional method of frequently replacing small-sized abutment blocks 74, this solution greatly reduces mold changing operations, saves bending time, and effectively improves equipment utilization and processing cycle time.

[0050] By having two abutting blocks 74 engage at different positions on the bend 10, bending pressure at the bend can be maintained. This effectively avoids the problems of insufficient clamping force, pipe slippage, or uneven deformation caused by insufficient contact area of ​​traditional small abutting blocks 74, ensuring bending accuracy and product quality.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic pipe bending machine, characterized in that, The device includes a processing table, a fixed frame is fixedly connected to the front side of the processing table, a bending wheel is rotatably connected to the fixed frame via a rotating shaft, the rotating shaft is driven by a drive assembly, a clamping mechanism is provided on the processing table, a fixing mechanism and a limiting mechanism are provided on the processing table near the bending wheel, and a horizontal support section is provided on the peripheral surface of the bending wheel for cooperating with the fixing mechanism to fix the round tube. The fixing mechanism includes a mounting base 1 fixedly connected to a rotating shaft via a connecting plate. Two first cylinders are provided on the mounting base 1. A contact block is fixedly connected to the telescopic end of each first cylinder. One first cylinder is slidably mounted on the mounting base 1 via a transverse component. The other first cylinder is rotatably mounted on the mounting base 1 via an angle adjustment component. The first cylinder connected to the angle adjustment component rotates around the rotating shaft as the center. The angle adjustment assembly includes an arc-shaped guide seat fixedly mounted on a mounting base one, an arc-shaped slide plate slidably mounted on the arc-shaped guide seat, a first cylinder fixedly mounted on the upper side of the arc-shaped slide plate, and a locking assembly mounted on the base of the first cylinder, a drive gear one rotatably mounted on the mounting base one near the position of the arc-shaped slide plate, and multiple evenly distributed tooth blocks fixedly mounted on the curved surface of the arc-shaped slide plate away from the center along its arc direction, the drive gear one meshing with the multiple tooth blocks, and a motor two fixedly mounted on the lower side of the mounting base one, the output shaft of the motor two being fixedly connected to the drive gear one; The two contact blocks can be distributed at the beginning and end of the horizontal support section to work with the bending wheel to apply pressure to the round tube. At the same time, the two contact blocks can also make way for the bent round tube through the lateral movement component and the angle adjustment component, so as to adjust the position of the two contact blocks and apply pressure to the round tube again.

2. The automatic pipe bending machine according to claim 1, characterized in that, The clamping mechanism includes a second cylinder fixedly mounted on the processing table. The telescopic end of the second cylinder is fixedly connected to a motor, and a three-jaw chuck is fixedly connected to the output shaft of the motor.

3. The automatic pipe bending machine according to claim 1, characterized in that, The lateral movement assembly includes a rectangular guide seat fixedly mounted on a mounting base, a slide block slidably mounted on the rectangular guide seat, a first cylinder fixedly mounted on the slide block, and a third cylinder fixedly mounted on one side of the rectangular guide seat, with the telescopic end of the third cylinder fixedly connected to the slide block.

4. The automatic pipe bending machine according to claim 1, characterized in that, Both the arc-shaped guide seat and the arc-shaped slide plate rotate 1 circumferentially around the pivot point through the mounting base.

5. The automatic pipe bending machine according to claim 1, characterized in that, The locking assembly includes a U-shaped pin, which is slidably disposed on the side wall of the lower base of the first cylinder. The upper end of the spring is fixedly connected to the side wall of the lower base of the first cylinder, and the lower end of the spring is fixedly connected to the surface of the corresponding vertical section of the U-shaped pin. An iron block is fixedly disposed on the upper side of the horizontal section of the U-shaped pin, and an electromagnet is fixedly disposed on the side wall of the lower base of the first cylinder above the iron block. Multiple sets of locking holes adapted to the U-shaped pin are fixedly disposed on the upper side of the arc-shaped guide seat.

6. The automatic pipe bending machine according to claim 1, characterized in that, The limiting mechanism includes a second mounting base fixedly mounted on one side of the processing table and located behind the first mounting base. A second rectangular guide seat is fixedly mounted on the second mounting base, and a second slide seat is slidably mounted on the second rectangular guide seat. A fourth cylinder is fixedly mounted on the upper side of the second slide seat. A U-shaped abutment plate is fixedly connected to the telescopic end of the fourth cylinder. A fifth cylinder is fixedly mounted on one side of the second rectangular guide seat, and the telescopic end of the fifth cylinder is fixedly connected to the second slide seat.

7. The automatic pipe bending machine according to claim 1, characterized in that, The drive assembly includes a second drive gear coaxially fixedly mounted on a rotating shaft. A sixth cylinder is fixedly installed inside the processing table near the front side. The telescopic end of the sixth cylinder is fixedly connected to a drive gear plate, which meshes with the second drive gear.

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