A new type of fully automatic pipe bending machine

Abstract

This invention provides a novel fully automatic pipe bending machine, comprising a coiled tube feeding rack, a straightening component, a magnetic levitation mandrel device, a feeding component, a chipless cutting trolley device, and a bending component arranged in sequence. One end of the pipe is wound around the outer circumference of the coiled tube feeding rack, and the other end passes sequentially through the straightening component, the magnetic levitation mandrel device, the feeding component, and the chipless cutting trolley device before being bent by the bending component. This invention can continuously transport pipes for cutting and bending, reducing the equipment footprint and improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe bending, and in particular to a novel fully automatic pipe bending machine. Background Technology

[0002] Currently, when processing pipe fittings, cutting and bending are usually done separately. However, this separate processing method leads to more steps, high labor intensity due to manual handling of materials, and low overall processing efficiency. If multiple machines are integrated for continuous processing, the combination of multiple independent workstations will inevitably result in a larger equipment footprint. Furthermore, after integrating multiple independent workstations, shorter pipe fittings cannot be processed on the entire machine, while longer pipe fittings are prone to sagging and bending due to gravity. Summary of the Invention

[0003] The purpose of this invention is to provide a new type of fully automatic pipe bending machine that can continuously transport pipes for cutting and bending, reduce the equipment footprint, and improve processing efficiency.

[0004] To solve the above-mentioned technical problems, the present invention provides a novel fully automatic pipe bending machine, comprising a coil feeding rack, a straightening component, a magnetic levitation mandrel device, a feeding component, a chipless cutting carriage device, and a pipe bending component arranged in sequence. One end of the pipe is wound around the outer circumference of the coil feeding rack, and the other end passes through the straightening component, the magnetic levitation mandrel device, the feeding component, and the chipless cutting carriage device in sequence before being bent by the pipe bending component.

[0005] Furthermore, the magnetic levitation core rod device includes a magnetic levitation core rod seat, multiple outer magnetic rings placed inside the magnetic levitation core rod seat, a core rod passing through the magnetic levitation core rod seat, and multiple inner magnetic rings sleeved on the outside of the core rod and corresponding to the multiple outer magnetic rings. The outer magnetic rings and inner magnetic rings are coupled to each other. When the tube passes through the magnetic levitation core rod seat, the outer magnetic rings are located outside the tube, and the inner magnetic rings and the core rod are located inside the tube. An outer guide ring is provided between two adjacent outer magnetic rings, and an inner guide ring is provided between two adjacent inner magnetic rings.

[0006] Furthermore, the magnetic levitation core rod is mounted on the slide, and the two sides of the slide are movably mounted on the first guide rail. A lead screw is threaded through and connected to the middle of the slide. When the lead screw rotates relative to the slide, the slide moves along the first guide rail.

[0007] Furthermore, at least two sets of guide wheel sets are connected to the slide, and the at least two sets of guide wheel sets are located on both sides of the magnetic levitation core rod seat. The guide wheel set includes at least two rotatable guide wheels on the slide. When the tube passes through the magnetic levitation core rod seat, the parts of the tube located on both sides of the magnetic levitation core rod seat are located between at least two guide wheels.

[0008] Furthermore, the chipless cutting trolley device includes a fixed base, a rotatable main shaft mounted on the fixed base, and a cutting blade at the end of the main shaft. When the pipe passes through the main shaft and the main shaft rotates, the cutting blade pre-cuts the pipe.

[0009] Furthermore, a sliding sleeve is fitted around the outer periphery of the main shaft, which can move axially relative to the main shaft. A jaw seat is provided at the end of the main shaft, and the jaw seat has multiple rotatable jaws along the circumference. The side of the jaws near the sliding sleeve has a first inclined surface, and the first inclined surface is configured to cooperate with the sliding sleeve. A core-fixing sleeve is built into the jaw seat. When the sliding sleeve moves toward the jaw seat, the jaws clamp the pipe.

[0010] Furthermore, a slider is connected to the side of the gripper seat away from the main shaft. The slider can move radially relative to the gripper seat. An elastic element is connected between the slider and the gripper seat. The cutting blade is connected to the slider. The end of the sliding sleeve near the gripper seat has a pressure cap. The side of the pressure cap near the slider has a second inclined surface, and the side of the slider near the pressure cap has a third inclined surface. The second and third inclined surfaces are in contact with each other. When the sliding sleeve moves towards the gripper seat, the slider moves away from the tube.

[0011] Furthermore, the fixed base has a drive component on one side, and a drive sleeve is movably connected to the end of the sliding sleeve near the drive component. The feed fork is used to connect the output end of the drive component and the drive sleeve.

[0012] Furthermore, the straightening component includes at least two opposing initial guide wheels, an oil box, a material-free detection device, a rounding wheel group, a longitudinal straightening wheel group, and a transverse straightening wheel group arranged in sequence. The rounding wheel group includes at least two opposing rounding wheels. The longitudinal straightening wheel group includes multiple longitudinal straightening wheels, which are staggered on both sides of the vertical direction of the pipe fitting. The transverse straightening wheel group includes multiple transverse straightening wheels, which are staggered on both sides of the horizontal direction of the pipe fitting.

[0013] Furthermore, the feeding component includes a second guide rail, a movable feeding platform mounted on the second guide rail, and a chipless cutting carriage device mounted on the feeding platform.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. The magnetic levitation mandrel device can continuously transport pipe materials without stopping the machine in the middle or cutting the material before transporting it, which greatly increases the processing efficiency.

[0016] 2. The chipless cutting trolley device enables continuous transportation and pre-cutting of pipe fittings, ensuring fully automated efficiency before pipe bending. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the straightening component in this invention.

[0019] Figure 3 This is a schematic diagram of the magnetic levitation mandrel device in this invention.

[0020] Figure 4 This is an internal structural diagram of the magnetic levitation mandrel device in this invention.

[0021] Figure 5 This is a schematic diagram of the feeding component in this invention.

[0022] Figure 6 This is a schematic diagram of the chipless cutting trolley device in this invention.

[0023] Figure 7 This is a top view of the chipless cutting trolley device in this invention.

[0024] Figure 8 This is the present invention. Figure 7 Cross-sectional view along line BB.

[0025] Figure 9 This is the present invention. Figure 8 A magnified view of a portion of the image.

[0026] Figure 10 This is a side view of the chipless cutting trolley device in this invention.

[0027] Figure 11 This is the present invention. Figure 10 Cross-sectional view along line AA.

[0028] Figure 12 This is the present invention. Figure 11 A magnified view of a portion of the image. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0030] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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, the above terms should not be construed as limiting this invention.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0032] like Figure 1-12 The present invention provides a novel fully automatic pipe bending machine, comprising a coil feeding rack 1, a straightening component 2, a magnetic levitation mandrel device 3, a feeding component 4, a chipless cutting trolley device 5, and a pipe bending component 6 arranged in sequence. One end of the pipe 7 is wound around the outer circumference of the coil feeding rack 1, and the other end passes through the straightening component 2, the magnetic levitation mandrel device 3, the feeding component 4, and the chipless cutting trolley device 5 in sequence before being bent by the pipe bending component 6.

[0033] Specifically, the raw material for the pipe fittings is in the form of coiled tubing. The coiled tubing is wound and fixed on the coiled tubing feeding rack. Then, one end of the pipe fitting is pulled out and introduced into the straightening component. The straightening component straightens the coiled tubing into a flat pipe fitting. Then, a magnetic levitation mandrel device supports the inside of the pipe fitting, ensuring the bending effect of the pipe bending component when it is bent later. In addition, before bending, the pipe fittings pass through a feeding component and a chipless cutting carriage. The chipless cutting carriage pre-cuts the pipe fittings at a designated location. Then, with the cooperation of the feeding component, the pre-cut component is sent to the bending component for bending. The pre-cut location is then broken off manually or automatically. This ensures continuous transport of the pipe fittings and also ensures that the pre-cutting and breaking method improves the cutting effect of the pipe fittings.

[0034] The main structure of the coil feeding rack is a disc-shaped support frame. The coil is wound around the outer periphery of the disc-shaped support frame. At the same time, an oil mist nozzle is connected to the center of the support frame. One end of the coil wound on the coil feeding rack is connected to the oil mist nozzle, which is connected to an external oil supply device through oil pipes. The oil mist nozzle sprays oil mist onto the inner wall of the coil, so that the inside of the pipe has a lubricating effect, thereby increasing the effectiveness of the subsequent magnetic levitation mandrel device.

[0035] In particular, the structure of the pipe bending component in this solution is the same as that of existing pipe bending equipment, and will not be described in detail here.

[0036] It is worth mentioning that the pipes processed in this solution are copper pipes.

[0037] Preferably, the magnetic levitation core rod device 3 includes a magnetic levitation core rod seat 31, a plurality of outer magnetic rings 32 placed inside the magnetic levitation core rod seat 31, a core rod 33 passing through the magnetic levitation core rod seat 31, and a plurality of inner magnetic rings 34 sleeved on the outside of the core rod 33 and corresponding to the plurality of outer magnetic rings 32. The outer magnetic rings 32 and the inner magnetic rings 34 are coupled to each other. When the tube 7 passes through the magnetic levitation core rod seat 31, the outer magnetic rings 32 are located outside the tube 7, and the inner magnetic rings 34 and the core rod 33 are located inside the tube 7. An outer guide ring 35 is provided between two adjacent outer magnetic rings 32, and an inner guide ring 36 is provided between two adjacent inner magnetic rings 34.

[0038] Specifically, by coupling the outer and inner magnetic rings together, the core rod is suspended in the magnetic levitation core rod seat under the action of magnetic force. When the pipe passes through the magnetic levitation core rod seat, the pipe wall is located between the core rod and the magnetic levitation core rod seat, thereby supporting the inside of the pipe through the core rod to improve the stability of the pipe in the subsequent pipe bending process.

[0039] Meanwhile, due to the setting of the outer guide ring and the inner guide ring, when the pipe passes through the magnetic levitation mandrel seat, it can be guided by the inner and outer guide rings to ensure the accuracy of the pipe's movement direction. In addition, the inner and outer guide rings can also be used to separate and fix the inner and outer magnetic rings to ensure the stability between the inner and outer magnetic rings, further increasing the effect of the mandrel when in use.

[0040] Both the outer and inner magnetic rings are made of magnets, and the outer and inner magnetic rings attract each other, so that the part of the core rod with the inner magnetic ring is stably confined to the position of the magnetically levitated core rod seat.

[0041] Preferably, the magnetic levitation core rod seat 31 is disposed on the slide table 37, and the two sides of the slide table 37 are movably disposed on the first guide rail 38. A lead screw 39 is connected through the middle of the slide table 37. When the lead screw 39 rotates relative to the slide table 37, the slide table 37 moves along the first guide rail 38.

[0042] Specifically, since the location of the pipe bend and the radius of curvature of the bend are different, the magnetic levitation mandrel seat is placed on the slide, and the slide is moved to drive the magnetic levitation mandrel seat and the mandrel inside it to move, thereby ensuring that the mandrel can stably and adaptively support the inside of the pipe and increase the bending effect.

[0043] In this design, when the slide moves, the lead screw is driven to rotate by a servo motor and other driving components, as well as a synchronous pulley and synchronous belt and other transmission mechanisms. In this design, the lead screw and the slide are connected by a thread. During the rotation of the lead screw, the threaded connection can drive the slide to move linearly along the first guide rail, thereby stably driving the core rod to move.

[0044] Preferably, at least two sets of guide wheels are connected to the slide 37, and the at least two sets of guide wheels are located on both sides of the magnetic levitation core rod seat 31. The guide wheel set includes at least two rotatable guide wheels 310 disposed on the slide 37. When the tube 7 passes through the magnetic levitation core rod seat 31, the portions of the tube 7 located on both sides of the magnetic levitation core rod seat 31 are located between at least two guide wheels 310.

[0045] Specifically, to ensure that the core rod can accurately support the inside of the pipe, this solution uses guide wheel sets on both sides of the magnetic levitation core rod seat to guide and position the pipe parts entering and leaving the magnetic levitation core rod seat. This ensures that the pipe parts at these two locations are clamped and guided by at least two guide wheels. In addition, the rotatable setting of the guide wheels reduces the friction between the guide wheels and the pipe parts, thereby improving the accuracy of the fit between the pipe parts and the core rod.

[0046] Preferably, the chipless cutting trolley device 5 includes a fixed base 51, a rotatable main shaft 52 mounted on the fixed base 51, and a cutting blade 53 at the end of the main shaft 52. When the pipe 7 passes through the main shaft 52 and the main shaft 52 rotates, the cutting blade 53 pre-cuts the pipe 7.

[0047] Specifically, after the pipe passes through the magnetic levitation mandrel seat, it continues to pass through the main shaft position. At this time, the fixed seat is moved and the main shaft is moved to the designated position, so that the cutting blade is located at the position of the pipe waiting to be pre-cut. Then the main shaft is rotated to drive the cutting blade to pre-cut the outer circumference of the pipe, so that the pre-cut position of the pipe can be broken off manually or automatically.

[0048] Pre-cutting refers to making a non-cutting circular cut on the outer circumference of the pipe fitting using a cutting blade, in order to facilitate the subsequent breaking process.

[0049] In one embodiment of this solution, a servo motor is provided on one side of the fixed base. The output end of the servo motor and the end of the spindle are both equipped with synchronous pulleys, and the two synchronous pulleys are connected by a synchronous belt pulley, so that when the servo motor starts, it can drive the spindle to rotate, thereby driving the cutting blade to perform annular cutting on the outer periphery of the pipe.

[0050] Preferably, a sliding sleeve 54 is fitted around the outer periphery of the main shaft 52. The sliding sleeve 54 can move axially relative to the main shaft 52. A jaw seat 55 is provided at the end of the main shaft 52. The jaw seat 55 is provided with a plurality of rotatable jaws 56 along the circumferential direction. The side of the jaw 56 near the sliding sleeve 54 has a first inclined surface 57, and the first inclined surface 57 is configured to cooperate with the sliding sleeve 54. A core-fixing sleeve 58 is built into the jaw seat 55. When the sliding sleeve 54 moves toward the jaw seat 55, the jaws 56 clamp the pipe 7.

[0051] Specifically, when the pipe needs to be transported to the bending component, the sliding sleeve moves closer to the gripper seat. During the movement, the sliding sleeve will contact the first inclined surface of the gripper. Then, as the sliding sleeve continues to move, the first inclined surface pushes the gripper to rotate and clamp the pipe. The pipe is then clamped and fixed by multiple grippers. At this point, the pipe can be transported a specified distance simply by moving the fixed seat.

[0052] The gripper is provided with a tension spring or a coil spring at the position where it rotates relative to the gripper seat. This allows the gripper to open naturally away from the tube under the action of the coil spring or tension spring when there is no pushing from the sliding sleeve, so that the tube can freely enter and exit the spindle position.

[0053] It is worth mentioning that this solution also has a centering sleeve inside the gripper seat. The centering sleeve can limit the initial position of the pipe to a certain range, so as to ensure the stability of the gripper when clamping the pipe.

[0054] Preferably, a slider 59 is connected to the side of the gripper seat 55 away from the main shaft 52. The slider 59 can move radially relative to the gripper seat 55. An elastic element is connected between the slider 59 and the gripper seat 55. The cutting blade 53 is connected to the slider 59. The end of the sliding sleeve 54 near the gripper seat 55 has a pressure cap 510. The side of the pressure cap 510 near the slider 59 has a second inclined surface 511. The side of the slider 59 near the pressure cap 510 has a third inclined surface 512. The second inclined surface 511 and the third inclined surface 512 fit together. When the sliding sleeve 54 moves toward the gripper seat 55, the slider 59 moves away from the tube 7.

[0055] Specifically, when the outer circumference of the pipe needs to be pre-cut by the cutting blade, the sliding sleeve moves away from the gripper seat, causing the sliding sleeve to move the pressure cap away from the gripper seat. At this time, due to the cooperation between the second and third inclined surfaces, during the movement of the pressure cap, the second inclined surface pushes and presses the third inclined surface, causing the slider to move radially relative to the gripper seat. This causes the slider to move the cutting blade closer to the pipe, so that the cutting blade can pre-cut the pipe. After the pre-cutting is completed, the sliding sleeve moves in the opposite direction, causing the pressure cap to move in the opposite direction. At this time, the second inclined surface no longer pushes the third inclined surface, and the elastic force of the elastic element pushes the slider to reset, thereby moving the cutting blade away from the pipe to reset and avoid interference between the two processes of gripping the pipe by the gripper and cutting the pipe by the cutting blade.

[0056] The elastic element is a spring, and the cutting blade is fixed to one side of the slider by a fixed shaft, nut and other parts.

[0057] Preferably, the fixed base 51 has a drive member 513 on one side, and the sliding sleeve 54 is movably connected to the end of the drive member 513 near the drive sleeve 514. The feed fork 515 is used to connect the output end of the drive member 513 and the drive sleeve 514.

[0058] Specifically, when it is necessary to move the sliding sleeve, the feed fork is pushed or pulled by activating the drive unit, so that the feed fork pulls or pushes the drive sleeve. Since the drive sleeve and the sliding sleeve are movably connected, the sliding sleeve will move synchronously when the drive sleeve moves, so as to achieve the purpose of moving the sliding sleeve.

[0059] The feed fork has a structure similar to the lever principle. When the feed fork is pushed by the drive component, it pulls the drive sleeve. When the feed fork is pulled by the drive component, it pushes the drive sleeve.

[0060] Specifically, the movable connection between the sliding outer sleeve and the driving sleeve refers to the fact that the driving sleeve can push or pull the sliding outer sleeve to move, while the sliding outer sleeve can rotate relative to the driving sleeve. In one embodiment of this solution, an annular groove is provided on the outer periphery of the sliding outer sleeve, and an annular structure located in the annular groove is provided on the inner periphery of the driving sleeve, so that the required movable connection is formed between the sliding outer sleeve and the driving sleeve.

[0061] In one embodiment of this solution, the driving component adopts a structure such as a servo electric cylinder or an electric push rod.

[0062] Preferably, the straightening component 2 includes at least two opposing initial guide wheels 21, an oil box 22, a material-free detection device 23, a rounding wheel group, a longitudinal straightening wheel group, and a transverse straightening wheel group arranged in sequence. The rounding wheel group includes at least two opposing rounding wheels 24. The longitudinal straightening wheel group includes multiple longitudinal straightening wheels 25, which are staggered on both sides of the vertical direction of the pipe fitting 7. The transverse straightening wheel group includes multiple transverse straightening wheels 26, which are staggered on both sides of the horizontal direction of the pipe fitting 7.

[0063] Specifically, when one end of the coil passes through the straightening component, the coil in a bent state is first initially straightened by the initial guide wheel. When the fitting passes the oil box position, the outer wall of the fitting is lubricated. Subsequently, the fitting passes through the rounding wheel group, the longitudinal straightening wheel group, and the transverse straightening wheel group in sequence to perform multiple calibrations on the fitting, thereby increasing the calibration effect of the fitting and preventing the fitting from remaining in a bent state during subsequent processing.

[0064] It is worth mentioning that, since at least two opposing calibrating wheels in the calibrating wheel set are tangent to each other, they are mainly used to calibrate and stretch the outer wall curvature of the pipe fitting during calibration. Similarly, the multiple longitudinal straightening wheels in the longitudinal straightening wheel set are staggered on both sides of the pipe fitting in the vertical direction, and are primarily used to straighten the pipe fitting vertically. Likewise, the multiple transverse straightening wheels in the transverse straightening wheel set are staggered on both sides of the pipe fitting in the horizontal direction, and are primarily used to straighten the pipe fitting horizontally. Through three consecutive straightening processes, the pipe fitting is calibrated from a coiled form to a straight pipe form.

[0065] The oil box contains a sponge. After volatile oil is introduced into the oil box, the sponge absorbs the volatile oil, so that the surface of the pipe can be lubricated by the sponge when the pipe passes through the oil box. Combined with the lubrication of the inner wall of the pipe at the coil feeding rack, both the inner and outer walls of the pipe are lubricated. As a result, when the pipe passes through the magnetic levitation mandrel seat, there is a lubrication effect between the pipe and the outer magnetic ring, and between the pipe and the inner magnetic ring (mandrel), reducing the wear of the pipe and components.

[0066] Specifically, the material-free detection device is mainly used to detect whether there is material in the pipe fittings or at the straightening components or the equipment itself. The material-free detection device mainly includes a gravity wheel that can move up and down a certain distance and a limit switch located at the bottom of the material-free detection device. When the pipe fitting passes the straightening components, the gravity wheel is lifted by the pipe fitting, thus raising the gravity wheel to the top. When there is no pipe fitting, the gravity wheel falls due to gravity and presses on the limit switch. At this time, the limit switch opens and sends a signal to indicate that there is no material in the pipe fitting.

[0067] Preferably, the feeding component 4 includes a second guide rail 41, a movable feeding platform 42 mounted on the second guide rail 41, and a chipless cutting trolley device 5 mounted on the feeding platform 42.

[0068] Specifically, the chipless cutting trolley is moved by the feeding platform moving along the second guide rail, thereby achieving the purpose of gripping the pipe fitting at the designated position and feeding the pipe fitting, and moving the cutting blade to the position of the pipe fitting that needs to be pre-cut.

[0069] In one embodiment of this solution, a rack is provided on one side of the second guide rail, and the feeding platform is equipped with a rotatable gear that meshes with the rack. The gear is controlled by a servo motor, so that when the servo motor starts and drives the gear to rotate, the feeding platform moves along the second guide rail through the meshing of the gear and rack.

[0070] This invention is not limited to the preferred embodiments described above. Anyone can derive other products in various forms under the guidance of this invention. However, regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. A novel fully automatic pipe bending machine, characterized in that: The device includes a coil loading rack (1), a straightening component (2), a magnetic levitation mandrel device (3), a feeding component (4), a chipless cutting trolley device (5), and a bending component (6) arranged in sequence. One end of the pipe (7) is wound around the outer periphery of the coil loading rack (1), and the other end passes through the straightening component (2), the magnetic levitation mandrel device (3), the feeding component (4), and the chipless cutting trolley device (5) in sequence before being bent by the bending component (6). The chipless cutting trolley device (5) includes a fixed base (51), a rotatable main shaft (52) mounted on the fixed base (51), and a cutting blade (53) at the end of the main shaft (52). When the pipe (7) passes through the main shaft (52) and the main shaft (52) rotates, the cutting blade (53) pre-cuts the pipe (7). A sliding sleeve (54) is fitted around the outer periphery of the main shaft (52). The sliding sleeve (54) can move axially relative to the main shaft (52). A jaw seat (55) is provided at the end of the main shaft (52). The jaw seat (55) is provided with multiple rotatable jaws (56) along the circumferential direction. The jaw (56) has a first inclined surface (57) on the side close to the sliding sleeve (54), and the first inclined surface (57) is fitted with the sliding sleeve (54). A core-fixing sleeve (58) is built into the jaw seat (55). When the sliding sleeve (54) moves toward the jaw seat (55), the jaw (56) clamps the pipe (7). A slider (59) is connected to the side of the gripper seat (55) away from the main shaft (52). The slider (59) can move radially relative to the gripper seat (55). An elastic element connects the slider (59) and the gripper seat (55). The cutting blade (53) is connected to the slider (59). The end of the sliding sleeve (54) near the gripper seat (55) has a pressure cap (510). The side of the pressure cap (510) near the slider (59) has a second inclined surface (511). 59) The side near the pressure cap (510) has a third inclined surface (512), and the second inclined surface (511) and the third inclined surface (512) are in contact with each other. When the sliding sleeve (54) moves toward the gripper seat (55), the slider (59) moves away from the pipe (7). Moving the sliding sleeve (54) away from the gripper seat (55) causes the slider (59) to drive the cutting blade (53) closer to the pipe (7). The magnetic levitation core rod device (3) includes a magnetic levitation core rod seat (31), multiple outer magnetic rings (32) placed inside the magnetic levitation core rod seat (31), a core rod (33) passing through the magnetic levitation core rod seat (31), and multiple inner magnetic rings (34) sleeved on the outside of the core rod (33) and corresponding to the multiple outer magnetic rings (32). The outer magnetic rings (32) and inner magnetic rings (34) are coupled to each other. When the tube (7) passes through the magnetic levitation core rod seat (31), the outer magnetic rings (32) are located outside the tube (7), and the inner magnetic rings (34) and the core rod (33) are located inside the tube (7). An outer guide ring (35) is provided between two adjacent outer magnetic rings (32), and an inner guide ring (36) is provided between two adjacent inner magnetic rings (34).

2. The novel fully automatic pipe bending machine according to claim 1, characterized in that: The magnetic levitation core rod seat (31) is mounted on the slide table (37). The two sides of the slide table (37) are movably mounted on the first guide rail (38), and a lead screw (39) is connected through the middle of the slide table (37). When the lead screw (39) rotates relative to the slide table (37), the slide table (37) moves along the first guide rail (38).

3. The novel fully automatic pipe bending machine according to claim 2, characterized in that: At least two sets of guide wheels are connected to the slide (37), and the at least two sets of guide wheels are placed on both sides of the magnetic levitation core rod seat (31). The guide wheel set includes at least two rotatable guide wheels (310) on the slide (37). When the tube (7) passes through the magnetic levitation core rod seat (31), the parts of the tube (7) located on both sides of the magnetic levitation core rod seat (31) are located between at least two guide wheels (310).

4. The novel fully automatic pipe bending machine according to claim 1, characterized in that: The fixed base (51) has a drive member (513) on one side, and the sliding sleeve (54) is movably connected to the end of the drive member (513) with a drive sleeve (514). The feed fork (515) is used to connect the output end of the drive member (513) and the drive sleeve (514).

5. The novel fully automatic pipe bending machine according to claim 1, characterized in that: The straightening component (2) includes at least two opposing initial guide wheels (21), an oil box (22), a material-free detection device (23), a rounding wheel group, a longitudinal straightening wheel group, and a transverse straightening wheel group arranged in sequence. The rounding wheel group includes at least two opposing rounding wheels (24). The longitudinal straightening wheel group includes multiple longitudinal straightening wheels (25), which are staggered on both sides of the vertical direction of the pipe fitting (7). The transverse straightening wheel group includes multiple transverse straightening wheels (26), which are staggered on both sides of the horizontal direction of the pipe fitting (7).

6. The novel fully automatic pipe bending machine according to claim 1, characterized in that: The feeding component (4) includes a second guide rail (41), a movable feeding platform (42) mounted on the second guide rail (41), and a chipless cutting trolley device (5) mounted on the feeding platform (42).

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