CN217474518U - Automatic pipe bender - Google Patents

Abstract

The utility model belongs to the technical field of the tubular product processing and specifically relates to an automatic bending machine, include: the device comprises a positioning device arranged on a frame, a clamping device arranged on one side of the positioning device, a wheel die arranged on one side of the clamping device, a pressing die arranged on one side of the wheel die and rotating around the axial direction of the wheel die, and a driving device for driving the pressing die to rotate between a first position and a second position; the driving device comprises a turntable and a driving assembly for driving the turntable to rotate, the center of the turntable is rotatably arranged on an upper rotating shaft on the rack, the center of the wheel mold is also arranged on the upper rotating shaft, and the pressing mold is arranged on the circumference of the turntable and synchronously rotates along with the turntable. The utility model has the advantages that can carry out accurate control to the position and the angle of bending, guarantee the quality of bending.

Description

Automatic pipe bender

Technical Field

The utility model belongs to the technical field of the tubular product processing and specifically relates to an automatic bending machine.

Background

With the development of society, especially the rapid development of industry and building industry, stainless steel pipe is often used in the production process, and the steel pipe of purchase is all sharp generally, need bend a certain section or several sections of steel pipe in the production process, forms the bent angle on the steel pipe to satisfy different demands. Along with the importance on production quality, higher requirements are also provided for the accuracy of the bending position and angle of the steel pipe, so that the quality requirements cannot be met by the traditional manual bending mode.

An existing pipe bending machine, for example, a chinese utility model patent (publication No. CN212190721U, published as 20201222) discloses a simple movable pipe bending mechanism, which includes an installation base, four corners of a lower surface of the installation base are respectively fixed with a universal wheel with a self-locking function, and further includes a motor pipe bending mechanism and a pipe fixing seat, wherein the motor pipe bending mechanism and the pipe fixing seat are respectively fixed at left and right sides of an upper surface of the installation base; the motor pipe bending mechanism comprises a pipe bending bottom plate, a motor rotating device, a pipe pressing device and a rotating connecting plate, the pipe bending bottom plate is fixed on the upper surface of the mounting base, the motor rotating device is fixed in the middle of the upper surface of the pipe bending bottom plate, the pipe pressing device is fixed on the rear side of the upper surface of the rotating connecting plate, and the front end of the rotating connecting plate is fixedly connected with the working end of the motor rotating device; the utility model discloses the practicality is high, and compact structure has improved work efficiency, has good market using value.

However, although the above-mentioned pipe bender can realize automatic pipe bending, it is impossible to precisely control the position and angle of the bent pipe, and therefore the quality of the bent pipe cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing an automatic pipe bending machine, this pipe bending machine are provided with positioner and fix a position the tip of tubular product, ensure the accuracy of the position of bending, simultaneously with the coaxial setting of wheel mould and carousel, the moulding-die setting only needs to control the angle that the carousel has turned over on the circumference of carousel, just can carry out accurate control to the angle of bending, guarantees the return bend quality.

For the purpose of the utility model, the following technical scheme is adopted for implementation:

an automated bender, comprising:

the device comprises a positioning device arranged on a rack, a clamping device arranged on one side of the positioning device, a wheel mold arranged on one side of the clamping device, a pressing mold arranged on one side of the wheel mold and rotating around the axial direction of the wheel mold, and a driving device for driving the pressing mold to rotate between a first position and a second position;

a wheel mould groove with a circular arc-shaped section is arranged on the circumferential direction of the outer side of the wheel mould, a pressing mould groove which extends in a straight line and has a circular arc-shaped section is arranged on the side surface of the pressing mould facing the wheel mould, and the shape sizes of the wheel mould groove and the pressing mould groove are matched;

the driving device comprises a turntable and a driving assembly for driving the turntable to rotate, the center of the turntable is rotatably arranged on an upper rotating shaft on the rack, the center of the wheel mold is also arranged on the upper rotating shaft, and the pressing mold is arranged on the circumference of the turntable and synchronously rotates along with the turntable.

Preferably, when the pressing die is at the first position, the axial direction of the pressing die groove is in line with the clamping device and the positioning device; when the pressing die is at the second position, the axial direction of the pressing die groove is staggered with the clamping device and the positioning device.

Preferably, the drive assembly comprises: the device comprises a motor, a speed reducer arranged on an output shaft of the motor, a rotary transmission pair arranged on the output shaft of the speed reducer, and a transmission rod arranged on the rotary transmission pair; the transmission rod makes circular motion around the axis where the upper rotating shaft is located, and the transmission rod is connected with the rotating disc.

Preferably, the motor is a servo motor, and the speed reducer is a planetary speed reducer; the rotary transmission pair adopts a synchronous belt component or a gear component.

Preferably, one end of the transmission rod is connected to the rotary transmission pair, and the other end of the transmission rod penetrates through the through groove in the rack and is connected to the rotary table.

Preferably, the through groove is in an arc shape which is adapted to the motion trail of the transmission rod.

Preferably, be provided with first spout in the frame, positioner includes: the positioning slide block is arranged in the first sliding groove in a sliding mode, the positioning block is arranged on the upper portion of the positioning slide block, one side of the positioning block is provided with a positioning rod, the axis of the positioning rod extends along the horizontal direction, and the positioning rod is used for extending into a pipe to be bent; the positioning slide block and the positioning block are internally provided with a longitudinally-penetrated spiral fastener, the spiral fastener is screwed downwards, the bottom of the spiral fastener is abutted against the rack, and the positioning block is fixed; a graduated scale is arranged on one side of the first sliding chute.

Preferably, the clamping device comprises a fixed clamping jaw and a movable clamping jaw which are oppositely arranged, the opposite inner sides of the fixed clamping jaw and the movable clamping jaw are respectively provided with a fixed clamping groove and a movable clamping groove, and the axes of the fixed clamping groove and the movable clamping groove extend along the horizontal direction and are aligned with the positioning device; the movable clamping jaw is arranged in a second sliding groove on the rack in a sliding manner, and a linear driver for driving the movable clamping jaw to slide in the second sliding groove is arranged on the movable clamping jaw.

Preferably, a sensor is arranged on one side of the positioning device, and the clamping device clamps the pipe when the sensor detects that the pipe to be bent is connected to the positioning device.

Preferably, a stop block is arranged on one side of the wheel die and at a position close to the bending critical point, and a blocking surface is arranged on the side, facing the wheel die, of the stop block and is used for blocking the outer side of the pipe.

To sum up, the utility model has the advantages that fix a position the one end of tubular product through positioner to after the location is accomplished, press from both sides tightly through clamping device, ensure the rigidity of tubular product, guarantee the accuracy of the position of bending. The wheel die and the turntable are coaxially arranged on the upper rotating shaft, and the pressing die is arranged on the circumference of the turntable, so that the pipe can be bent only by controlling the turntable to rotate by a preset angle, the bending angle of the pipe is ensured, and the bending quality is ensured.

Drawings

Fig. 1 is a schematic structural view of a pipe bender.

Fig. 2 is a schematic structural view of the bending machine after the frame is removed.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of the pipe bender with the press die in the initial position.

FIG. 5 is a schematic diagram of the bending machine with the press mold in the post-bending position.

Fig. 6 is a schematic structural diagram of the positioning device.

Fig. 7 is a schematic view of the structure of the clamping device.

Fig. 8 is an exploded view of the bender.

Fig. 9 is an exploded view of the mounting plate, the turntable, the drive link and the second synchronizing wheel.

Fig. 10 is a cross-sectional view of the bender.

Detailed Description

An automatic pipe bender is used for bending a certain section of a tubular object, particularly a straight pipe, and the bending angle can be adjusted within a certain range.

As shown in fig. 1, the pipe bender includes a frame 10, a mounting plate 101 is disposed on an upper end surface of the frame 10, a positioning device 1 is disposed on the mounting plate 101, the positioning device 1 is used for positioning a rear end of a pipe 8 to be bent (see fig. 4), so as to position a position on the pipe 8 to be bent, and the positioning device 1 can slide back and forth along a first sliding slot 1011 on the mounting plate 101, so that the pipe bender can control bending positions of pipes 8 with different lengths, and can also bend different positions of the pipe 8 with the same length. The clamping device 2 is arranged on the front side of the positioning device 1, and the clamping device 2 is used for clamping the position, close to the rear end, of the pipe 8 during bending so as to prevent the pipe 8 from moving during bending. The front side of the clamping device 2 is provided with a wheel mold 3, the axis of the wheel mold 3 is arranged along the longitudinal direction (although the possibility that the axis is arranged along the transverse direction is not excluded), the side surface of the wheel mold 3 is provided with a wheel mold groove 31 (see fig. 3) which extends along the circumferential direction of the axis of the wheel mold 3 and has a circular arc-shaped cross section, when the pipe is bent, the axis of the pipe 8 extends along the horizontal direction, and a part of the inner side of the pipe 8 is attached in the wheel mold groove 31 and is bent along the extending direction of the wheel mold groove 31. A stamper 4 is provided on one side of the wheel 3, and a stamper groove 41 (see fig. 4) corresponding to the wheel groove 31 is provided on the side of the stamper 4 facing the wheel 3, the stamper groove 41 extending linearly in the horizontal direction and having a circular arc-shaped cross section, and the outline of the cross section of the stamper groove 41 and the outline of the cross section of the wheel groove 31 are formed in an arc shape having the same diameter. When bending the pipe, a part of the outer side of the pipe 8 is fitted in the die groove 41. The die 4 is provided with a driving device 5, and the driving device 5 is used for driving the die 4 to rotate around the axis of the wheel die 3 between a first position and a second position, so that under the action of the die 4 and the wheel die 3, the outer side of the pipe 8 is stretched, and the inner side of the pipe 8 is compressed, so that the outer side of the pipe 8 is bent towards the inner side of the pipe 8, namely, the pipe 8 is bent.

In the above, the inner side of the tube 8 refers to the side of the tube 8 facing the die 3, and the outer side of the tube 8 refers to the side of the tube facing away from the die 3. The first position is an initial (zero point) position of the die 4 in which the axial direction of the die groove 41 is aligned with the clamping device 2 and the positioning device 1 (see fig. 4). The second position is a position after the pipe 8 is bent (see fig. 5), in which the die 4 is rotated and the axial direction of the die groove 41 is displaced from the clamping device 2 and the positioning device 1.

As shown in fig. 4 and 5, the bending machine is used substantially as follows: at the initial position, the axis of the die cavity 41 is in a straight line with the positioning device 1 and the clamping device 2, at this time, the straight pipe 8 is horizontally placed, the rear end of the pipe 8 is firstly attached in the die cavity 41 and moves backwards along the axis direction of the die cavity 41, so that the pipe passes through the die cavity 31 and the clamping device 2 in sequence, and finally the rear end of the pipe 8 is contacted with the positioning device 1, and the positioning of the pipe 8 is completed; then the clamping device 2 clamps the rear end of the pipe 8; then the driving device 5 drives the pressing die 4 to rotate around the axis of the wheel die 3, so that the outer side of the front end of the pipe 8 receives radial force from the horizontal direction, the pipe 8 is bent around the wheel die 3 until the bending angle reaches a preset value, the driving device 5 stops acting and drives the pressing die 4 to reset, the clamping device 2 loosens the rear end of the pipe 8, and the pipe 8 is taken out from the front side of the bending machine.

It should be noted that the cavities 31 of the die 3 may have different sizes (e.g.,. phi.6,. phi.8,. phi.10), and correspondingly, the die cavities 41 of the die 4 may have corresponding sizes, so as to bend pipes 8 with different outer diameters.

As shown in fig. 5 and 6, in a preferred embodiment, the positioning device 1 includes a positioning slider 11 slidably disposed in the first sliding slot 1011, a positioning block 12 is disposed on the positioning slider 11, the positioning block 12 moves synchronously with the first sliding slot 1011, and the positioning block 12 is used for positioning the rear end of the tube 8. In order to fix the positioning block 12 in the first sliding slot 1011 after the position is adjusted, a longitudinally penetrating screw fastener 13 (for example, a screw, an adjusting screw, a screw knob, etc.) is provided inside the positioning slider 11 and the positioning block 12, and the screw fastener 13 is screwed downward, so that the bottom of the screw fastener 13 abuts against the frame 10 corresponding to the position of the first sliding slot 1011, thereby fixing the positioning block 12 in the first sliding slot 1011. Conversely, when the screw fastener 13 is screwed upwards, the bottom of the screw fastener 13 will be disengaged from the frame 10, so that the positioning block 12 can slide in the first sliding slot 1011, thereby adjusting the position of the positioning device 1.

As shown in fig. 6, in a better embodiment, in order to improve the positioning effect on the tube 8, a positioning rod 121 protruding forward is disposed at the front side of the positioning block 12, an axis of the positioning rod 121 is horizontally disposed along the front-back direction, a diameter of the front end of the positioning rod 121 is smaller than an inner diameter of the tube 8, and a diameter of the rear end of the positioning rod 121 is larger than the inner diameter of the tube 8, so that the rear end of the tube 8 can extend into the front end of the positioning rod 121, which can provide more reliable positioning for the tube 8. Further, the diameter of locating lever 121 increases from the front to back gradually for locating lever 121 can fix a position tubular product 8 of different internal diameters.

As shown in fig. 5, in order to facilitate observing the position of the positioning device 1 and further control the position of the bent portion of the pipe 8, a graduated scale 14 is arranged on the mounting plate 101 on one side of the first sliding groove 1011 and along the extending direction of the first sliding groove 1011, and the position of the positioning device 1 can be known more accurately by comparing the scales on the positioning device 1 and the graduated scale 14, so that the position of the pipe 8 can be accurately controlled to be bent.

In a preferred embodiment, as shown in fig. 3, a sensor 6 (e.g. a cylindrical metal inductive surface type inductive sensor) is disposed at the front side of the positioning device 1, the sensor 6 is used for detecting whether the rear end of the pipe 8 is connected to the positioning device 1, and when the sensor 6 senses that the pipe 8 is connected to the positioning device 1, the clamping device 2 clamps the pipe, thereby ensuring the quality of positioning the pipe 8. Meanwhile, the sensor 6 can also detect whether the pipe 8 exists or not, so that abnormal starting of the equipment is prevented.

In a preferred embodiment, as shown in fig. 7, the clamping device 2 comprises a fixed jaw 21 and a movable jaw 22, wherein the fixed jaw 21 is fixedly arranged, the movable jaw 22 is arranged opposite to the fixed jaw 21 and moves linearly towards the fixed jaw 21, a fixed clamp groove 211 and a movable clamp groove 221 are respectively arranged on the opposite inner sides of the fixed jaw 21 and the movable jaw 22, and the axes of the fixed clamp groove 211 and the movable clamp groove 221 extend forwards and backwards along the horizontal direction. And the heights of the fixed clamp groove 211 and the movable clamp groove 221 correspond to the positioning device 1 so that the axis thereof is in the horizontal direction when the tube 8 is clamped.

As shown in fig. 3 and 7, in order to realize the linear movement of the movable jaw 22, a second sliding groove 1012 (see fig. 4) is provided on the mounting plate 101, the second sliding groove 1012 extends in the left-right direction, and the lower portion of the movable jaw 22 is slidably provided in the second sliding groove 1012. A linear actuator 23 (e.g., a linear actuator such as a cylinder, an air cylinder, etc., which is commonly used) for driving the movable jaw 22 to move linearly is provided at one side (e.g., the right side) of the movable jaw.

In a preferred embodiment, as shown in fig. 3, a stop block 7 is arranged on the front side of the clamping device 2 and on the right side opposite to the die 3, the stop block 7 is arranged near the critical point when the tube 8 is bent (the position where the back side of the tube 8 is just not bent), and the side of the stop block 7 facing the die 3 is provided with a blocking surface 71, and the blocking surface 71 is used for blocking the outer side of the tube 8 from moving. Specifically, the outer side of the rear portion of the tube 8 is in contact with the stopper face 71 during bending, and the rear portion of the tube 8 is prevented from moving during bending.

As shown in fig. 2 and 3, in a preferred embodiment, the driving device 5 includes a driving assembly 51 and a turntable 52 disposed at an output end of the driving assembly 51, the turntable 52 is rotatably disposed, the driving assembly 51 is used for driving the turntable 52 to rotate, an axis of rotation of the turntable 52 coincides with an axis of the stamper 3, and the stamper 4 is disposed on the turntable 52 and rotates synchronously with the turntable 52.

Specifically, as shown in fig. 8 and 10, in order to realize the rotation of the turntable 52, an installation opening 521 is provided at the center of the turntable 52, a bearing 53 and an upper rotating shaft 54 are provided in the installation opening 521, the upper rotating shaft 54 is longitudinally provided and the bottom is fixedly provided on the installation plate 101, and the upper rotating shaft 54 is connected with the installation opening 521 through the bearing 53, so that the turntable 52 can rotate around the upper rotating shaft 54.

As shown in fig. 10, in order to make the turntable 52 and the die 3 coaxially arranged, the center of the die 3 is arranged on the upper part of the upper rotating shaft 54, and in order to ensure the normal rotation of the turntable 52, the bottom of the die 3 does not directly contact the turntable 52, for example, in fig. 10, the bottom of the die 3 is connected on the top of the bearing 53. A cover plate 55 is arranged on the top of the wheel model 3, and the wheel model 3 is fixed on the upper rotating shaft 54 through the cover plate 55 to prevent the wheel model from moving axially.

As shown in fig. 8 and 10, in order to ensure that the turntable 52 can normally rotate on the upper rotating shaft 54 without being locked, the bearing 53 includes a deep groove ball bearing 531 on the upper side and a thrust ball bearing 532 on the lower side. To facilitate the mounting of the bearing 53 and the wheel die 3, the upper rotating shaft 54 is a stepped shaft.

As shown in fig. 2, in a preferred embodiment, the driving assembly 51 includes a motor 511, a reducer 512 disposed on an output shaft of the motor 511, a rotation transmission pair 513 disposed on an output shaft of the reducer 512, and a transmission rod 514 disposed on the rotation transmission pair 513. The transmission rod 514 is connected to the rotating disc 52, so that when the motor 511 drives the rotating transmission pair 513 to rotate, the transmission rod 514 follows the rotating transmission pair 513 and drives the rotating disc 52 to rotate.

The specific structure of the drive assembly 51 is as follows:

as shown in fig. 2, the motor 511 is preferably a servo motor to control the angle that the turntable 52 rotates, thereby precisely controlling the bending angle. The motor 511 is longitudinally arranged and is arranged at the bottom of the mounting plate 101 through a motor mounting plate 5111, so that the mounting space is saved, and the volume of the device is reduced.

As shown in fig. 2, the reducer 512 is preferably a planetary reducer, and needs to have a large transmission ratio (for example, a ratio of 1: 100) to amplify the torque of the motor 511 so as to bend the pipe 8 with large rigidity; meanwhile, through the matching of the servo motor and the speed reducer, the angle of the bent pipe can be controlled more accurately, and the quality of the bent pipe is ensured.

As shown in fig. 2, the rotary transmission pair 513 may be a timing belt assembly or a gear assembly. In fig. 2, a timing belt is taken as an example, a first synchronizing wheel 5131 is attached to an output shaft of the speed reducer 512, a second synchronizing wheel 5132 is provided on one side of the first synchronizing wheel 5131, and the first synchronizing wheel and the second synchronizing wheel are connected by a timing belt 5133. In order to realize the installation of the second synchronizing wheel 5132, a lower rotating shaft 56 extending longitudinally and downwards is arranged at the bottom of the installation plate 101 corresponding to the position of the upper rotating shaft 54, and the second synchronizing wheel 5132 is installed on the lower rotating shaft 56 through a bearing. Through setting up the synchronous belt subassembly, can stop at optional position, improve the controllability to the angle, have good transmission stability simultaneously.

As shown in fig. 8 and 9, in order to fix the driving lever 514, a lower connection hole 51321 is provided on an upper end surface of the second sync wheel 5132, an upper connection hole (not shown) is provided at a bottom of the rotary plate 52, and the driving lever 514 is connected between the lower connection hole 51321 and the upper connection hole. In order to allow the transmission rod 514 to pass through the mounting plate 101, a through groove 1013 penetrating up and down is provided on the mounting plate 101, and in order to save the area of the groove, the shape of the through groove 1013 is an arc shape corresponding to the motion track of the transmission rod 514.

When the driving device 5 acts, the motor 511 drives the speed reducer 512 to act, the speed reducer 512 amplifies the torque of the motor 511, the speed reducer 512 drives the synchronous belt assembly to rotate, the second synchronous wheel 5132 drives the transmission rod 514 to rotate around the upper rotating shaft 54, that is, the transmission rod 514 performs circular motion in the through groove 1013, and meanwhile, the transmission rod 514 drives the turntable 52 to correspondingly rotate, so that the pressing die 4 on the turntable 52 rotates along with the turntable 52, and the pipe 8 is bent.

All actions of the pipe bender are controlled by the PLC control circuit through the touch screen 102 on the rack 10, the operation is convenient and fast, and the bending angle can be adjusted at will from 5 degrees to 145 degrees. The wheel die 3 and the pressing die 4 are heat-treated by high-hardness alloy steel to HRC62-68 hardness, and have high wear resistance, good use performance and service life not less than 10 ten thousand times. The pipe bending machine is particularly suitable for processing small workpieces, can ensure higher angle control performance, and ensures the bending quality.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including by way of illustration of the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An automated bender, comprising:

the device comprises a positioning device (1) arranged on a frame (10), a clamping device (2) arranged on one side of the positioning device (1), a wheel mold (3) arranged on one side of the clamping device (2), a pressing mold (4) arranged on one side of the wheel mold (3) and rotating around the axial direction of the wheel mold (3), and a driving device (5) for driving the pressing mold (4) to rotate between a first position and a second position;

a wheel mould groove (31) with a circular arc-shaped section is arranged on the circumferential direction of the outer side of the wheel mould (3), a mould pressing groove (41) which extends in a straight line and has a circular arc-shaped section is arranged on the side surface of the mould pressing (4) facing the wheel mould (3), and the shape sizes of the wheel mould groove (31) and the mould pressing groove (41) are matched;

the driving device (5) comprises a turntable (52) and a driving assembly (51) for driving the turntable (52) to rotate, the center of the turntable (52) is rotatably arranged on an upper rotating shaft (54) positioned on the rack (10), the center of the wheel mold (3) is also arranged on the upper rotating shaft (54), and the pressing mold (4) is arranged on the circumference of the turntable (52) and rotates synchronously along with the turntable (52).

2. The automatic pipe bender according to claim 1, characterized in that when the die (4) is in the first position, the axial direction of the die cavity (41) is aligned with the clamping means (2) and the positioning means (1); when the pressing die (4) is at the second position, the axial direction of the pressing die groove (41) is staggered with the clamping device (2) and the positioning device (1).

3. The automated bender according to claim 1, wherein the drive assembly (51) comprises: the device comprises a motor (511), a speed reducer (512) arranged on an output shaft of the motor (511), a rotary transmission pair (513) arranged on the output shaft of the speed reducer (512), and a transmission rod (514) arranged on the rotary transmission pair (513); the transmission rod (514) makes a circular motion around the axis of the upper rotating shaft (54), and the transmission rod (514) is connected with the rotating disc (52).

4. The automatic pipe bender according to claim 3, characterized in that, the motor (511) is a servo motor, and the reducer (512) is a planetary reducer; the rotary transmission pair (513) adopts a synchronous belt assembly or a gear assembly.

5. The automated bender according to claim 3, wherein one end of the transmission rod (514) is connected to the rotary drive pair (513), and the other end of the transmission rod (514) passes through the through slot (1013) of the frame (10) and is connected to the rotary table (52).

6. The automated bender according to claim 5, wherein the through slot (1013) is shaped as an arc corresponding to the movement trace of the transmission rod (514).

7. The automatic pipe bender according to any of the claims 1-6, characterized in that a first runner (1011) is provided on the frame (10), and the positioning device (1) comprises: the pipe bending machine comprises a positioning slide block (11) arranged in a first sliding groove (1011) in a sliding mode, a positioning block (12) arranged on the upper portion of the positioning slide block (11), a positioning rod (121) with an axis extending along the horizontal direction is arranged on one side of the positioning block (12), and the positioning rod (121) is used for extending into a pipe (8) to be bent; a longitudinally-penetrating spiral fastener (13) is arranged inside the positioning sliding block (11) and the positioning block (12), the spiral fastener (13) is screwed downwards, the bottom of the spiral fastener (13) is abutted against the rack (10), and the positioning block (12) is fixed; a scale (14) is arranged on one side of the first sliding chute (1011).

8. The automatic pipe bender according to any of the claims 1-6, characterized in that the clamping device (2) comprises a fixed jaw (21) and a movable jaw (22) which are oppositely arranged, the opposite inner sides of the fixed jaw (21) and the movable jaw (22) are respectively provided with a fixed clamp slot (211) and a movable clamp slot (221), the axes of the fixed clamp slot (211) and the movable clamp slot (221) extend along the horizontal direction and are aligned with the positioning device (1); the movable clamping jaw (22) is arranged in a second sliding groove (1012) on the machine frame (10) in a sliding manner, and a linear driver (23) for driving the movable clamping jaw (22) to slide in the second sliding groove (1012) is arranged on the movable clamping jaw.

9. The automated pipe bender according to any of the claims 1-6, characterized in that a sensor (6) is arranged on one side of the positioning device (1), and the clamping device (2) clamps the pipe (8) when the sensor (6) detects that the pipe (8) to be bent is connected to the positioning device (1).

10. The automatic pipe bender according to any of the claims 1 to 6, characterized in that a stop block (7) is arranged on one side of the wheel die (3) and near the critical bending point, the side of the stop block (7) facing the wheel die (3) is provided with a blocking surface (71), and the blocking surface (71) is used for blocking the outer side of the pipe (8).

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