A cable protection pipe bending apparatus

Abstract

The application is a cable protection pipe bending equipment, which comprises a supporting base, a first ring winding assembly and a second ring winding assembly are arranged on the supporting base, the first ring winding assembly comprises a first electric guide rail, the first electric guide rail is horizontally arranged at one end of the supporting base, a sliding frame is slidably connected to the first electric guide rail, a pair of first driving motors are connected to the sliding frame, first winding columns are connected to the main shaft ends of the two first driving motors, a metal ring winding belt is arranged between the two first winding columns, and the metal ring winding belt is used for winding the cable pipe material which needs to be bent. The metal ring winding belt can be adjusted according to the size of the cable pipe material, so that the cable pipe material which needs to be bent can be conveniently wound in all directions, the bending position of the cable pipe material is protected, and the deformation of the cable pipe material on one side of the position wound by the iron bar can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable protection pipe processing, and particularly relates to a cable protection pipe bending device. BACKGROUND

[0002] The cable protection sleeve is a new type of sleeve material widely used in power engineering. With the rapid development of power cable buried laying engineering and different application conditions, sometimes the cable protection pipe needs to be bent.

[0003] The authorized patent with the authorized publication number CN214488408U discloses a pre-bending device for a cable protection pipe, which comprises a main body, a side plate fixedly installed on the left side of the lower end surface of the main body, a lower support fixedly installed on the left side of the lower end surface of the side plate, and a rotating motor fixedly installed on the upper end surface of the lower support. The pre-bending device for the cable protection pipe can drive the side clamping plates one and two to move in the guide rail according to different sizes of the cable protection pipe, so as to fix the cable protection pipe. The adjusting seat is driven by the second driving motor to move left and right on the pre-bending seat, so as to adjust the pre-bending size of the cable protection pipe.

[0004] The pre-bending device for the cable protection pipe has the following defects: the cable protection pipe is only clamped on both sides of the end portion by the pair of side plates, and then the bending operation is performed. Since the pipe material is not clamped in the circumferential direction, the bending position is prone to force imbalance during the bending process, which easily causes the pipe material to deform at a position in the circumferential direction, the pipe diameter changes, or the pipe is broken and damaged, thereby causing the entire pipe material to be scrapped and unable to be used. SUMMARY

[0005] The present application aims to solve the above-mentioned defects, and provides a cable protection pipe bending device.

[0006] The application is realized by adopting the following technical scheme: a cable protection pipe bending device, comprising a supporting base, a first ring winding assembly and a second ring winding assembly which are arranged on the supporting base and have the same structure, the first ring winding assembly comprises a first electric guide rail which is horizontally arranged at one end of the supporting base, a sliding frame is slidably connected to the first electric guide rail, a first driving motor is connected to the sliding frame in pairs, a first winding column is connected to the main shaft end of the two first driving motors, a metal ring winding belt is arranged between the two first winding columns, the metal ring winding belt comprises a plurality of iron rods which are arranged transversely, a rotating assembly is connected between adjacent iron rods, an electric heating rod is fixedly connected to one end of each iron rod, and the metal ring winding belt is wound around the cable pipe material to be bent; a pulling open assembly for pulling open the metal ring winding belt is arranged on the supporting base, so that the cable pipe material can be conveniently inserted into the metal ring winding belt; a pressing mechanism is arranged on the upper and lower sides of the sliding frame, a main driving motor is connected to one end of the supporting base close to the first electric guide rail, the first electric guide rail of the first ring winding assembly is connected to the main shaft end of the main driving motor, and the first electric guide rail of the second ring winding assembly is connected to the supporting base; a guide supporting plate is connected to the supporting base, and an end limiting assembly is arranged at the bottom of the guide supporting plate.

[0007] In particular, the first ring winding assembly and the second ring winding assembly are aligned and arranged on the supporting base.

[0008] In particular, the pressing mechanism comprises a first electric telescopic rod which is connected to the upper and lower ends of the sliding frame in pairs and is symmetrically distributed, and the telescopic end of the first electric telescopic rod is connected to a limiting pressing rod.

[0009] In particular, the pulling open assembly comprises a second electric telescopic rod arranged at one end of the supporting base away from the main driving motor, a control switch group is arranged on the sliding frame and is electrically connected to the second electric telescopic rod, the telescopic end of the second electric telescopic rod is connected to two second electric guide rails in pairs, and a magnet body is slidably connected to the two second electric guide rails.

[0010] In particular, the control switch group comprises an annular cavity which is arranged on the sliding frame and through which the main shaft end of the corresponding first driving motor of the sliding frame penetrates, a plurality of flaps are connected to the main shaft end of the first driving motor in a circumferential direction, a movable rotating block is movably connected to the inner wall of the annular cavity through a rebound hinge, and a pressure sensing switch which is electrically connected to the second electric telescopic rod is connected to the bottom of the movable rotating block.

[0011] In particular, the rotating assembly comprises a shaft sleeve and a shaft rod, the shaft sleeve is connected to one side of the iron rod in pairs, the shaft rod is connected to the other side of the iron rod in pairs, and the shaft rod is movably connected to the corresponding shaft sleeve.

[0012] Specifically, the end limiting component includes a second drive motor. There are two second drive motors, and both second drive motors are connected to the bottom of the guide plate. The main shaft end of the second drive motor is connected to a second winding column, and an iron chain is connected to the second winding column. The end of the iron chain is movably connected to a U-shaped clip.

[0013] The beneficial effects of this invention are:

[0014] 1. The metal wrapping strip provided in this invention can be adjusted according to the size of the cable conduit, thereby facilitating the all-round encirclement of the cable conduit that needs to be bent. At the same time, since the metal wrapping strip is composed of iron rods, it is convenient to fit the outer wall of the cable conduit in all directions, providing shaping protection near the bending position of the cable conduit. The iron rods are connected by bushings and shafts with parallel axes, which facilitates the overall linkage of all iron rods to lift up and drive the cable conduit to bend. During this process, deformation on one side of the cable conduit encircled by the iron rods can be effectively avoided.

[0015] 2. The metal wrapping strip of the present invention is composed of iron rods. Before the cable pipe passes through the metal wrapping strip, the upper and lower sides of the metal wrapping strip can be attracted by the paired magnets, and the metal wrapping strip can be pulled apart by the paired magnets to adjust the initial size of the metal wrapping strip so that the cable pipe that needs to be bent can pass through the metal wrapping strip. At the same time, when the metal wrapping strip is tightened to fit the outer wall of the pipe, it can be separated from the attracted magnets to avoid the magnets from causing obstruction.

[0016] 3. When the first drive motor of the present invention releases the metal wrapping strip in reverse through the first winding column, the magnet can remain attached to the upper and lower sides of the metal wrapping strip, which makes it convenient to adjust the initial size of the loop formed by the metal wrapping strip so that the cable pipe can pass through. When the cable pipe passes through the metal wrapping strip and the first drive motor tightens the metal wrapping strip by rotating forward through the first winding column, the paddle set in this process can activate the second electric telescopic rod to retract, so as to drive the magnet to automatically move away from the metal wrapping strip, thereby facilitating automatic separation from the metal wrapping strip without the need for manual operation to adjust and separate the magnet. Attached Figure Description

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

[0018] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0019] Figure 3 This is a schematic diagram of the structure in which the iron bars are connected to each other in this invention;

[0020] Figure 4 This is a schematic diagram of the structure in which the magnet body and the metal surrounding strip are connected in this invention;

[0021] Figure 5 is a schematic diagram of the overall structure of the application from the top view;

[0022] Figure 6 is Figure 5 is a schematic diagram of the enlarged structure at B in the figure;

[0023] Figure 7 is a schematic diagram of the structure of the combination of the dial and the pressure-sensitive switch in the application;

[0024] Figure 8 is a schematic diagram of the end limiting assembly in the application;

[0025] In the figure: 1 - support base; 2 - main drive motor; 3 - first electric guide rail; 4 - second electric telescopic rod; 5 - second electric guide rail; 6 - magnet body; 7 - guide cradle; 8 - metal ring around the belt; 9 - sliding carriage; 10 - first electric telescopic rod; 11 - limiting pressure bar; 12 - first winding column; 13 - iron bar; 14 - shaft; 15 - shaft sleeve; 16 - electric heating rod; 17 - cable pipe; 18 - first ring around the assembly; 19 - second ring around the assembly; 20 - first drive motor; 21 - annular cavity; 22 - dial; 23 - movable rotating block; 24 - pressure-sensitive switch; 25 - second drive motor; 26 - second winding column; 27 - iron chain; 28 - U-shaped clamping piece;

[0026] The application will be described in detail below with reference to the embodiments of the application and the accompanying drawings. DETAILED DESCRIPTION

[0027] The application will be further described below in combination with the accompanying drawings and embodiments:

[0028] As Figures 1-8 shown, a cable protection pipe bending device includes a support base 1, the support base 1 is provided with a first ring around the assembly 18 and a second ring around the assembly 19 which are of the same structure, the first ring around the assembly 18 and the second ring around the assembly 19 are aligned and distributed on the support base 1, the first ring around the assembly 18 includes a first electric guide rail 3, the first electric guide rail 3 is horizontally arranged at one end of the support base 1, a sliding carriage 9 is slidably connected to the first electric guide rail 3, a pair of first drive motors 20 are connected to the sliding carriage 9, shaft ends of the two first drive motors 20 are connected with first winding columns 12, a metal ring around the belt 8 is arranged between the two first winding columns 12, the metal ring around the belt 8 includes a plurality of iron bars 13, the plurality of iron bars 13 are arranged transversely, and a rotating assembly is connected between adjacent iron bars 13;

[0029] The rotating assembly comprises a shaft sleeve 15 and a shaft rod 14, the shaft sleeve 15 is connected on one side of the iron bar 13 in pairs, the shaft rod 14 is connected on the other side of the iron bar 13 in pairs, the axis of the shaft sleeve 15 and the shaft rod 14 and the axis of the iron bar 13 are parallel to each other, the shaft rod 14 is rotatably connected in the corresponding shaft sleeve 15, the rotatable connection of the shaft rod 14 and the shaft sleeve 15 facilitates the relative rotation between the adjacent iron bars 13, so that the metal ring around the belt 8 has a certain flexibility as a whole, and the cable pipe material 17 which needs to be bent is conveniently encircled;

[0030] The one end of each iron bar 13 is fixedly connected with an electric heating rod 16, the electric heating rod 16 in the metal ring around the belt 8 of the first ring assembly 18 and the electric heating rod 16 in the metal ring around the belt 8 of the second ring assembly 19 are located in the position close to each other.

[0031] The support base 1 is provided with a pulling open assembly for pulling open the metal ring around the belt 8, so as to facilitate the cable pipe material 17 to pass into the metal ring around the belt 8; the pulling open assembly comprises a second electric telescopic rod 4 provided on the end of the support base 1 away from the main drive motor 2, the sliding frame 9 is provided with a control switch group electrically connected with the second electric telescopic rod 4, the telescopic end of the second electric telescopic rod 4 is connected with two second electric guide rails 5 in pairs, and the two second electric guide rails 5 are both slidably connected with a magnet body 6; the control switch group comprises an annular cavity 21, the annular cavity 21 is opened in the sliding frame 9, the main shaft end of the corresponding first drive motor 20 penetrates through the annular cavity 21, a plurality of flaps 22 are connected in the circumferential direction of the main shaft end of the first drive motor 20, a movable rotating block 23 is movably connected on the inner wall of the annular cavity 21 through a resilient hinge, and the bottom of the movable rotating block 23 is connected with a pressure sensitive switch 24 electrically connected with the second electric telescopic rod 4.

[0032] When the cable pipe material 17 is not connected with the metal ring around the belt 8, the second electric telescopic rod 4 is controlled to be elongated, so that the paired magnet bodies 6 are transversely moved to the upper and lower sides of the metal ring around the belt 8 along with the elongation of the second electric telescopic rod 4, so that the paired magnet bodies 6 respectively adsorb the iron bars 13 at the upper and lower positions of the metal ring around the belt 8, and then the corresponding second electric guide rails 5 drive the magnet bodies 6 to move, so that the paired magnet bodies 6 are moved apart, thereby facilitating the soft metal ring around the belt 8 to be pulled open, so as to facilitate the subsequent cable pipe material 17 to transversely pass through the metal ring around the belt 8.

[0033] When the metal ring around the belt 8 needs to be preliminarily adjusted in the inner diameter according to the cable pipe 17 to be bent, so as to facilitate the cable pipe 17 to pass through, then control the pair of second electric guide rails 5 to drive the upper and lower magnet bodies 6 to move apart, preliminarily pull apart the upper and lower sides of the adsorbed metal ring around the belt 8 to a certain size, and in this process, control the first drive motor 20 to drive the first winding column 12 to reverse and release a certain length of the metal ring around the belt 8, and in the process of the first drive motor 20 driving the first winding column 12 to reverse, the pawl 22 is reversed, and passes through the position of the movable rotating block 23 one by one, in this process, the pawl 22 only contacts the upper position of the movable rotating block 23, that is, cannot trigger the second electric telescopic rod 4, when the cable pipe 17 passes into the metal ring around the belt 8, control the first drive motor 20 to drive the first winding column 12 to rotate and wind the metal ring around the belt 8, so as to tighten it, in this process, the pawl 22 is rotated in the positive direction, and in this process, the pawl 22 passes through the position of the movable rotating block 23 one by one, and presses and contacts the pressure sensitive switch 24 at the bottom position of the movable rotating block 23, so that the second electric telescopic rod 4 is retracted, drives the magnet body 6 to move away from the position of the cable pipe 17, and at the same time, since the first winding column 12 winds the metal ring around the belt 8, the magnet body 6 is separated from the adsorbed metal ring around the belt 8, so as to avoid that the magnet body 6 adsorbs the metal ring around the belt 8 and hinders it to be tightly attached to the outer wall of the cable pipe 17.

[0034] The upper and lower sides of the sliding frame 9 are provided with pressing mechanisms, the pressing mechanism comprises a first electric telescopic rod 10, the first electric telescopic rod 10 is connected at the upper and lower ends of the sliding frame 9 in pairs and is symmetrically distributed, and the telescopic end of the first electric telescopic rod 10 is connected with a limiting pressure rod 11; the pair of limiting pressure rods 11 press the corresponding positions of the metal ring around the belt 8 together by the elongation of the first electric telescopic rod 10, so that the metal ring around the belt 8 forms a ring at the positions, so as to be sleeved on the cable pipe 17.

[0035] The support base 1 is connected with a main drive motor 2 at one end close to the first electric guide rail 3, the main shaft end axis of the main drive motor 2 is perpendicular to the axis of the iron rod 13, the first electric guide rail 3 of the first ring around assembly 18 is connected with the main shaft end of the main drive motor 2, and the first electric guide rail 3 of the second ring around assembly 19 is connected with the support base 1.

[0036] The support base 1 is connected with a guide supporting plate 7, the guide supporting plate 7 is used for supporting the cable pipe 17, so as to facilitate the cable pipe 17 to pass through the ring formed by the metal ring around the belt 8, and the bottom of the guide supporting plate 7 is provided with an end limiting assembly; the end limiting assembly comprises a second drive motor 25, two second drive motors 25 are arranged, and the two second drive motors 25 are connected at the bottom of the guide supporting plate 7, the main shaft end of the second drive motor 25 is connected with a second winding column 26, the second winding column 26 is connected with an iron chain 27, and the end of the iron chain 27 is movably connected with a U-shaped clamping piece 28.

[0037] When the cable pipe 17 is bent, the cable pipe 17 is horizontally placed on the guide plate 7, and the first drive motor 20 is controlled in advance according to the pipe diameter size of the cable pipe 17, so that the first drive motor 20 drives the first winding column 12 to rotate reversely, and a certain length of the metal winding belt 8 is released, so that the metal winding belt 8 can form a loop around the cable pipe 17, so that the cable pipe 17 can pass through the metal winding belt 8 of the second winding assembly 19 and the metal winding belt 8 of the first winding assembly 18 in turn, and the position where the cable pipe 17 needs to be bent is located between the first winding assembly 18 and the second winding assembly 19, and then the first drive motor 20 is controlled to drive the first winding column 12 to rotate forwardly, so that the metal winding belt 8 is wound, and the metal winding belt 8 is tightened, and the first electric guide rail 3 is controlled to drive the sliding frame 9 to slide, and the pair of limiting pressure rods 11 are controlled to press the corresponding position of the metal winding belt 8, so that the position of the metal winding belt 8 close to the cable pipe 17 is closed together, so that the metal winding belt 8 around the cable pipe 17 forms a closed loop and tightly adheres to the outer wall of the cable pipe 17.

[0038] Then according to the length of the cable pipe 17, the second drive motor 25 is controlled to drive the second winding column 26 to rotate reversely to release a certain length of the iron chain 27, so that the U-shaped clamping piece 28 at the end of the iron chain 27 is clamped at the edge of the end of the cable pipe 17 away from the bending position, and the second drive motor 25 can be controlled to drive the second winding column 26 to rotate forwardly by a certain angle, so as to tighten the iron chain 27, and then the main drive motor 2 is controlled to drive the connected first electric guide rail 3 to rotate, so that the metal winding belt 8 on the first winding assembly 18 is turned up, and the electric heating rod 16 at the end of each iron rod 13 in the metal winding belt 8 is powered to generate heat, so as to heat the bending position of the cable pipe 17 in all directions, so that the bending position of the cable pipe 17 has a certain flexibility after being heated, and the bending is facilitated.

[0039] Since the metal winding belt 8 is composed of the iron rod 13, the adjacent iron rods 13 are connected by the combination of the shaft sleeve 15 and the shaft rod 14, and the axes of the iron rod 13, the shaft sleeve 15 and the shaft rod 14 are parallel to the axis of the cable pipe 17, and the iron rod 13 is perpendicular to the main shaft end of the main drive motor 2, so when the main drive motor 2 starts, the corresponding end of the cable pipe 17 can be bent up through the corresponding iron rod 13 of the metal winding belt 8, and the other end of the cable pipe 17 is fixed by the metal winding belt 8 of the second winding assembly 19, and the end of the cable pipe 17 away from the bending position is limited by the iron chain 27 and the U-shaped clamping piece 28, so as to avoid the other end of the cable pipe 17 from sliding along the axis direction of the iron rod 13 during the bending and upturning of the one end, causing the bending position to deviate.

[0040] The working principle of the present application: control the second electric telescopic rod 4 to extend, so that the pair of magnet bodies 6 move horizontally to the upper and lower sides of the metal ring belt 8 as the second electric telescopic rod 4 extends, so that the pair of magnet bodies 6 respectively adsorb the iron rods 13 at the upper and lower positions of the metal ring belt 8, then control the corresponding second electric guide rail 5 to drive the magnet body 6 to move, so that the upper and lower pairs of magnet bodies 6 move apart, so as to facilitate the expansion of the soft metal ring belt 8, and in this process, control the first drive motor 20 to drive the first winding column 12 to reverse and release a certain length of the metal ring belt 8, and in the process of the first drive motor 20 driving the first winding column 12 to reverse, the pawl 22 reverses and passes through the position of the movable rotating block 23 one by one, and in this process, the pawl 22 only contacts the upper position of the movable rotating block 23, that is, it cannot trigger the second electric telescopic rod 4;

[0041] After preliminarily adjusting the size of the metal ring belt 8 to be larger than the size of the cable pipe material 17 to be bent, the cable pipe material 17 is placed horizontally on the guide supporting plate 7, then the cable pipe material 17 passes through the metal ring belt 8 of the second ring assembly 19 and the metal ring belt 8 of the first ring assembly 18 in turn, and the position of the cable pipe material 17 to be bent is between the first ring assembly 18 and the second ring assembly 19, then control each first drive motor 20 to drive the first winding column 12 to rotate forward, and wind the metal ring belt 8, so that the metal ring belt 8 is tightened, at the same time, control the first electric guide rail 3 to drive the sliding frame 9 to slide, drive the pair of limiting pressure rods 11 to approach the side position of the cable pipe material 17, and control the first electric telescopic rod 10 to drive the limiting pressure rod 11 to press the corresponding position of the metal ring belt 8, so that the position of the metal ring belt 8 close to the cable pipe material 17 is gathered together, so that the metal ring belt 8 around the cable pipe material 17 forms a closed loop and tightly adheres to the outer wall of the cable pipe material 17, and the first drive motor 20 drives the first winding column 12 to rotate forward to wind the metal ring belt 8, so that it is tightened, and in the process of the first drive motor 20 driving the first winding column 12 to rotate forward, the pawl 22 rotates forward, and in this process, the pawl 22 passes through the position of the movable rotating block 23 one by one, and presses and contacts the pressure sensitive switch 24 at the bottom position of the movable rotating block 23, so that the second electric telescopic rod 4 is retracted to drive the magnet body 6 to move away from the position of the cable pipe material 17, and at the same time, since the first winding column 12 winds the metal ring belt 8, the magnet body 6 is separated from the adsorbed metal ring belt 8;

[0042] Then according to the length of the cable pipe 17, the second driving motor 25 drives the second winding column 26 to rotate reversely to release a certain length of the iron chain 27, so that the U-shaped clamping piece 28 at the end of the iron chain 27 is clamped at the edge of the end of the cable pipe 17 away from the bending position, and the second driving motor 25 can be controlled to drive the second winding column 26 to rotate forward by a certain angle, so as to tension the iron chain 27, and then the main driving motor 2 is controlled to rotate the connected first electric guide rail 3, so that the metal ring belt 8 on the first ring assembly 18 is turned up, and the electric heating rod 16 at the end of each iron rod 13 in the metal ring belt 8 is electrified to heat, so as to heat the bending position of the cable pipe 17 in all directions, so that the bending position of the cable pipe 17 has a certain flexibility after heating, which is convenient for bending. Since the metal ring belt 8 is composed of iron rods 13, the adjacent iron rods 13 are connected by the combination of the shaft sleeve 15 and the shaft rod 14, and the axes of the iron rod 13, the shaft sleeve 15 and the shaft rod 14 are parallel to the axis of the cable pipe 17, and the iron rod 13 is perpendicular to the main shaft end of the main driving motor 2, so that when the main driving motor 2 starts, the corresponding iron rod 13 of the corresponding metal ring belt 8 can bend the corresponding end of the cable pipe 17, and the other end of the cable pipe 17 is fixed by the metal ring belt 8 of the second ring assembly 19, and the end of the cable pipe 17 away from the bending position is limited by the iron chain 27 and the U-shaped clamping piece 28, so as to avoid the sliding of the other end of the cable pipe 17 along the axis direction of the iron rod 13 during the bending of the one end of the cable pipe 17, which causes the bending position to deviate.

[0043] In the process of bending the cable pipe 17, the present application can effectively avoid the stress imbalance near the bending position, avoid causing the deformation of the pipe at a certain position, the change of the pipe diameter, or the breakage and damage, thereby causing the entire pipe to be scrapped and unable to be used.

[0044] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] The present application has been described above in conjunction with the accompanying drawings, and it is obvious that the specific implementation of the present application is not limited by the above manner. Any improvement using the method concept and technical solution of the present application, or direct application to other occasions without improvement, is within the protection scope of the present application.

Claims

1. A cable protection pipe bending device, comprising a supporting base (1), a first ring assembly (18) and a second ring assembly (19) with the same structure are arranged on the supporting base (1), characterized in that, The first winding assembly (18) comprises a first electric guide rail (3) horizontally arranged at one end of the support base (1), a sliding frame (9) slidably connected to the first electric guide rail (3), a pair of first drive motors (20) connected to the sliding frame (9), first winding columns (12) connected to the main shaft ends of the two first drive motors (20), a metal winding belt (8) arranged between the two first winding columns (12), the metal winding belt (8) comprising a plurality of iron rods (13) arranged transversely, a rotating assembly connected between adjacent iron rods (13), an electric heating rod (16) fixedly connected to one end of each iron rod (13), and the metal winding belt (8) winding around the cable pipe material (17) to be bent; the support base (1) is provided with a pulling apart assembly for pulling apart the metal winding belt (8), facilitating the cable pipe material (17) to pass into the metal winding belt (8); the upper and lower sides of the sliding frame (9) are provided with pressing mechanisms, one end of the support base (1) near the first electric guide rail (3) is connected with a main drive motor (2), the first electric guide rail (3) of the first winding assembly (18) is connected with the main shaft end of the main drive motor (2), and the first electric guide rail (3) of the second winding assembly (19) is connected with the support base (1); the support base (1) is connected with a guide supporting plate (7), and the bottom of the guide supporting plate (7) is provided with an end limiting assembly. The pulling apart assembly comprises a second electric telescopic rod (4) arranged at one end of the support base (1) away from the main drive motor (2), a control switch group electrically connected to the second electric telescopic rod (4) and arranged on the sliding frame (9), two second electric guide rails (5) connected in pairs to the telescopic end of the second electric telescopic rod (4), and a magnet body (6) slidably connected to the two second electric guide rails (5); the control switch group comprises a ring-shaped cavity (21) formed in the sliding frame (9), the main shaft end of the corresponding first drive motor (20) of the sliding frame (9) penetrates through the ring-shaped cavity (21), a plurality of flaps (22) are connected in a circumferential direction to the main shaft end of the first drive motor (20), a movable rotating block (23) is movably connected to the inner wall of the ring-shaped cavity (21) through a resilient hinge, and the bottom of the movable rotating block (23) is connected with a pressure-sensitive switch (24) electrically connected to the second electric telescopic rod (4).

2. A cable protection tube bending apparatus according to claim 1, wherein The first winding assembly (18) and the second winding assembly (19) are aligned and arranged on the support base (1).

3. A cable protection tube bending apparatus according to claim 2, wherein The pressing mechanism comprises a first electric telescopic rod (10) connected in pairs to the upper and lower ends of the sliding frame (9) and symmetrically arranged, and a limiting pressing rod (11) connected to the telescopic end of the first electric telescopic rod (10).

4. A cable protection tube bending apparatus according to claim 3, wherein The rotating assembly comprises a shaft sleeve (15) and a shaft rod (14), the shaft sleeve (15) is connected in pairs to one side of the iron rod (13), and the shaft rod (14) is connected in pairs to the other side of the iron rod (13), and the shaft rod (14) is movably connected in the corresponding shaft sleeve (15).

5. A cable protection tube bending apparatus according to claim 4, wherein The end limiting assembly comprises two second driving motors (25), which are connected to the bottom of the guide supporting plate (7), and the main shaft end of the second driving motor (25) is connected with a second winding column (26), the second winding column (26) is connected with a chain (27), and the tail end of the chain (27) is movably connected with a U-shaped clamping piece (28).

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