Portable cable bending machine

Abstract

The invention discloses a portable cable bending machine which is characterized in that a bending wheel die is provided with an arc-shaped die groove with a rotating shaft as the center, a clamp is installed on the bending wheel die and located at one end of the arc-shaped die groove, a rotating stand is rotatably installed on the bending wheel die, and a shaping die is installed on the rotating stand; the first driving mechanism drives the rotating frame to rotate around the rotating shaft so as to drive the shaping mold to rotate around the bending wheel mold, and the cable is bent through cooperation of the positioning mold groove and the arc-shaped mold groove. The portable cable bending machine with the optimized design is light and handy in structure and convenient to move, the bending machine is fixed to the to-be-bent position of a cable through the clamp, the rotating frame drives the shaping mold to rotate, bending of the designated position of the cable is achieved, the bending arc degree of a steel armor is guaranteed, out-of-round is effectively avoided, and the bending quality of the cable is improved. Therefore, the superconducting effect of the bent high-temperature superconducting cable is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cable bending, and in particular to a portable cable bending machine. Background Art

[0002] High-temperature superconducting cable refers to a superconducting cable that can achieve zero resistance at temperatures above -196°C. Usually, the outer layer of the high-temperature superconducting cable is a stainless steel armor, and the inner side is a solid structure of the high-temperature superconducting cable, which is not easy to bend. Therefore, when bending, the cable needs to be moved to a large bending device for operation. This results in poor flexibility in the bending operation of the high-temperature superconducting cable at a specified position. In addition, the bending angle and bending radius of the high-temperature superconducting cable cannot be well controlled during bending. During the rebending process, the high-temperature superconducting cable will be out of round. The out-of-roundness of the high-temperature superconducting cable during the bending process will affect the superconducting effect, and the out-of-roundness cannot be eliminated by conventional core rods. In the field of high-temperature superconductivity, there are strict requirements for the superconducting effect of the high-temperature superconducting cable, and the rebending of the conductor is also indispensable. In this case, a bending machine needs to be designed to ensure that the high-temperature superconducting cable will not be out of round during the bending process to ensure the superconducting effect of the high-temperature superconducting cable. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a portable cable bending machine.

[0004] The portable cable bending machine proposed by the present invention comprises: a bending wheel die, a clamp, a rotating frame, a shaping die and a first driving mechanism;

[0005] A rotating shaft is provided on the bending wheel die and an arc-shaped die groove centered on the rotating shaft is provided on the outer wall. The clamp is installed on the bending wheel die and is located at one end of the arc-shaped die groove. The rotating frame is located on one side of the bending wheel die and is rotatably installed on the bending wheel die through the rotating shaft. The shaping die is located outside the arc-shaped die groove. The first driving mechanism is connected to the rotating frame to drive the rotating frame to rotate around the rotating shaft, so as to drive the shaping die to rotate around the bending wheel die, and the cable is bent by the cooperation of the positioning die and the bending wheel die.

[0006] Preferably, the cable wall extrusion assembly is further included, and the cable wall extrusion assembly is used to extrude the cable wall so that the side away from the bending wheel mold extends before the cable is bent.

[0007] Preferably, the cable wall extrusion assembly includes an extrusion seat, which is installed on a rotating frame. The extrusion seat is provided with an extrusion die groove matching the arc die groove on the side close to the bending wheel mold, and the inner wall of the extrusion die groove is provided with an extrusion structure for the cable wall away from the bending wheel mold.

[0008] Preferably, the shaping die comprises an extrusion seat which is mounted on a rotating frame, and an extrusion die groove cooperating with the arc-shaped die groove is provided on the side of the extrusion seat close to the bending wheel die, and an extrusion structure for the cable wall away from the bending wheel die is provided on the inner wall of the extrusion die groove.

[0009] Preferably, a mounting groove for accommodating a driving wheel is provided in the middle of the extrusion seat, a driving wheel rotatably mounted is provided in the mounting groove, a rotating shaft of the driving wheel is arranged along the tangential direction of the bending wheel die, a ball driving tooth is provided on the outer wall of the driving wheel, so that a ball driving groove is formed between the driving wheel and the side wall of the mounting groove, a ball groove is provided on the inner wall of the extrusion die groove, the ball driving groove and the ball groove are connected end to end to form a ball rolling path arranged in an annular manner, balls are provided in the ball rolling path, the balls protrude from the inner wall of the extrusion die groove to form the extrusion structure, and the balls in the ball groove are pushed to roll along the cable wall by the rotation of the driving wheel;

[0010] Preferably, the ball raceway is located on a plane perpendicular to the axial direction of the driving wheel.

[0011] Preferably, a second driving mechanism is further included, and a driving shaft of the second driving mechanism is connected to the driving wheel to drive the driving wheel to rotate.

[0012] Preferably, the second driving mechanism includes a driving motor and a reducer, the driving motor is mounted on the rotating frame, and the driving shaft of the driving motor is connected to the driving wheel through the reducer motor.

[0013] Preferably, a temperature sensor is provided on the extrusion seat for detecting the temperature of the extrusion area.

[0014] Preferably, it also includes a guide wheel, which is located on the side of the shaping die away from the clamp, and the guide wheel is arranged parallel to the bending wheel die and is rotatably mounted on the rotating frame.

[0015] Preferably, the first driving mechanism includes a driving cylinder and a connecting rod. The driving cylinder is installed on the bending wheel mold and its output shaft is arranged perpendicular to the rotating shaft. Both ends of the connecting rod are respectively hinged to the output shaft and the rotating frame. The output shaft of the driving cylinder drives the rotating frame to rotate through the connecting rod.

[0016] Preferably, it also includes a guide plate, which is installed on the bending wheel mold. The guide plate is arranged parallel to the output shaft of the driving cylinder and is located on the side of the driving cylinder away from the clamp.

[0017] In the present invention, the proposed portable cable bending machine has an arc-shaped die groove centered on the rotating shaft on the bending wheel die, a clamp is installed on the bending wheel die and is located at one end of the arc-shaped die groove, a rotating frame is rotatably installed on the bending wheel die, a shaping die is installed on the rotating frame and the outer wall is provided with a shaping die groove that matches the arc-shaped die groove; the first driving mechanism drives the rotating frame to rotate around the rotating shaft to drive the shaping die to rotate around the bending wheel die, and the cable is bent by the positioning die groove and the arc-shaped die groove. The portable cable bending machine with the above-mentioned optimized design has a light structure and is easy to move. The bending machine is fixed at the position of the cable to be bent by the clamp, and the rotating frame drives the shaping die to rotate to achieve bending at the specified position of the cable, and ensures the arc of the bending of the steel armor, effectively avoiding the occurrence of loss of roundness, thereby ensuring the superconducting effect of the high-temperature superconducting cable after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a portable cable bending machine in a bending state in one embodiment of the present invention.

[0019] Figure 2 A schematic diagram of the internal structure of an embodiment of a portable cable bending machine proposed by the present invention.

[0020] Figure 3 This is a schematic diagram of the structure inside the shaping mold in one embodiment of a portable cable bending machine proposed by the present invention. DETAILED DESCRIPTION

[0021] like Figures 1 to 3 As shown, Figure 1 This is a structural schematic diagram of a portable cable bending machine in a bending state in one embodiment of the present invention. Figure 2 This is a schematic diagram of the internal structure of an embodiment of a portable cable bending machine proposed by the present invention. Figure 3 This is a schematic diagram of the structure inside the shaping mold in one embodiment of a portable cable bending machine proposed by the present invention.

[0022] Reference Figure 1 and 2 , a portable cable bending machine proposed by the present invention comprises a bending wheel die 7, a fixture 3, a rotating frame 5, a shaping die 4 and a first driving mechanism;

[0023] A rotating shaft is provided on the bending wheel die 7 and an arc-shaped die groove centered on the rotating shaft is provided on the outer wall. The clamp 3 is installed on the bending wheel die 7 and is located at one end of the arc-shaped die groove. The rotating frame 5 is located on one side of the bending wheel die 7 and is rotatably installed on the bending wheel die 7 through the rotating shaft. The shaping die 4 is located outside the arc-shaped die groove. The first driving mechanism is connected to the rotating frame 5 to drive the rotating frame 5 to rotate around the rotating shaft, so as to drive the shaping die 4 to rotate around the bending wheel die 7, and the cable 10 is bent by the cooperation of the positioning die 4 and the bending wheel die 7.

[0024] In the specific working process of the portable cable bending machine of this embodiment, the position of the cable 10 to be bent is determined, the bending machine is placed at the position of the cable to be bent, and the cable is fixed to the cable by a clamp so that the cable extends tangentially along the arc-shaped die groove of the bending wheel die. Then, the rotating frame is driven to rotate by the first driving mechanism, driving the shaping die to squeeze the cable along the arc-shaped die groove of the bending wheel die, and the bending of the cable at the designated position is completed. During the bending process, the bending radius can be controlled by the size of the bending wheel die, and the rotation angle of the rotating frame can be controlled by the first driving mechanism, thereby controlling the bending angle.

[0025] In this embodiment, the proposed portable cable bending machine has an arc-shaped die groove centered on the rotating shaft on the bending wheel die, a clamp is installed on the bending wheel die and is located at one end of the arc-shaped die groove, a rotating frame is rotatably installed on the bending wheel die, a shaping die is installed on the rotating frame and the outer wall is provided with a shaping die groove that matches the arc-shaped die groove; the first driving mechanism drives the rotating frame to rotate around the rotating shaft to drive the shaping die to rotate around the bending wheel die, and the cable is bent by the positioning die groove and the arc-shaped die groove. The portable cable bending machine with the above-mentioned optimized design has a light structure and is easy to move. The bending machine is fixed at the position of the cable to be bent by the clamp, and the rotating frame drives the shaping die to rotate, bends and shapes the designated position of the cable, and ensures the arc of the steel armor bending, effectively avoiding the occurrence of loss of roundness, thereby ensuring the superconducting effect of the high-temperature superconducting cable after bending.

[0026] During the bending process, since the outer layer of the high-temperature superconducting cable is a stainless steel armor, after the bending is completed, the rigidity and elasticity of the stainless steel armor will cause the bending position to rebound and deform. Therefore, in a specific implementation, the portable cable bending machine of this embodiment also includes a cable wall extrusion assembly, which is used to squeeze the cable wall so that it extends away from the bending wheel mold 7 before the cable 10 is bent. Before the cable is shaped by the shaping die, the cable wall is squeezed and extended by the cable wall extrusion assembly to reduce the extrusion stress applied by the shaping die during bending and shaping, thereby reducing the rebound deformation of the cable during bending, thereby reducing the occurrence of out-of-round.

[0027] Specifically, in the specific design of the cable wall extrusion assembly, the cable wall extrusion assembly includes an extrusion seat 14, which is mounted on the rotating frame 5. The extrusion seat 14 is provided with an extrusion die groove that matches the arc-shaped die groove on the side close to the bending wheel die 7, and the inner wall of the extrusion die groove is provided with an extrusion structure for the cable wall away from the bending wheel die 7. During the bending process, the extrusion seat rotates with the rotating frame, cooperates with the cable in the bending wheel die before the shaping die, and extrude and extend the outer cable wall of the cable that is subjected to greater bending stress through the extrusion structure in the extrusion die groove.

[0028] In the specific design, the cable wall extrusion module can be set separately, or the cable wall extrusion assembly can be integrated into the shaping die, and the cable wall is extruded and extended during the shaping process of the shaping die. Specifically, the shaping die includes an extrusion seat 14, which is installed on the rotating frame 5. The extrusion seat 14 is provided with an extrusion die groove matching the arc die groove on the side close to the bending wheel die 7, and the inner wall of the extrusion die groove is provided with an extrusion structure for the cable wall away from the bending wheel die 7.

[0029] In order to avoid damage to the cable wall caused by the extrusion structure during extrusion and extension, refer to Figure 3 In the specific design of the extrusion structure, a mounting groove for accommodating a driving wheel 11 is provided in the middle of the extrusion seat 14, a rotatably mounted driving wheel 11 is provided in the mounting groove, the rotating shaft of the driving wheel 11 is arranged along the tangential direction of the bending wheel die, and a ball driving tooth is provided on the wall of the driving wheel 11, so that a ball driving groove is formed between the driving wheel 11 and the side wall of the mounting groove, a ball groove is provided on the inner wall of the extrusion die groove, and the ball driving groove and the ball groove are connected end to end to form a ring-shaped ball rolling track, and a ball 12 is provided in the ball rolling track, and the ball 12 protrudes from the inner wall of the extrusion die groove to form the extrusion structure, and the driving wheel 11 rotates to push the ball 12 in the ball groove to roll along the cable wall. During extrusion, the driving wheel rotates to drive the ball to move in the rolling track, thereby forming a movable extrusion structure on the inner wall of the extrusion die groove. In the process of the ball extruding and extending the cable wall, the friction between the two is converted into rolling friction, thereby avoiding hard damage to the cable wall.

[0030] In the specific design of the raceway, the ball raceway is located on a plane perpendicular to the axial arrangement of the driving wheel. The balls squeeze and extend the cable wall along the circumference, so that the outer wall of the cable wall forms an extension mark along the circumference, reducing the resistance of the bending to its axial stretching. In actual design, multiple ball raceways can be designed to form multiple extension marks arranged side by side on the outer side of the cable wall, thereby avoiding loss of roundness.

[0031] In material selection, the hardness of the selected ball material is greater than the hardness of the superconducting cable material, and the hardness of the selected raceway material is greater than the hardness of the ball material.

[0032] In the specific design, this embodiment also includes a second driving mechanism, and the driving shaft of the second driving mechanism is connected to the driving wheel 11 to drive the driving wheel 11 to rotate. Further, the second driving mechanism includes a driving motor 1 and a reducer 2, the driving motor 1 is installed on the rotating frame 5, and the driving shaft of the driving motor 1 is connected to the driving wheel 11 through the reduction motor. When working, the moving speed of the ball can be controlled by the driving motor, thereby controlling the extrusion speed of the ball on the cable wall, so that the extrusion progress can be adjusted according to the bending state.

[0033] In order to avoid the influence of excessive friction during the extrusion process on the bending process, a temperature sensor is provided on the extrusion seat 14 to detect the temperature of the extrusion area.

[0034] In another specific embodiment, the device of this embodiment further includes a guide wheel 9, which is located on the side of the shaping die 4 away from the clamp 3, and is arranged parallel to the bending wheel die 7 and rotatably mounted on the rotating frame 5. The guide wheel is equivalent to pre-bending the cable before bending, reducing the force on the shaping die and improving the bending effect.

[0035] In addition, in the specific implementation of the rotating frame, the rotating frame 5 includes two side frames, which are rotatably mounted on both sides of the bending wheel die 7, and the shaping die 4 and the extrusion seat 14 are located between the two side frames to ensure the reliability and stability of the shaping die applying force to the cable.

[0036] In other specific embodiments, the first driving mechanism includes a driving cylinder 8 and a connecting rod 6. The driving cylinder 8 is mounted on the bending wheel die 7 and its output shaft is arranged perpendicular to the rotating shaft. Both ends of the connecting rod 6 are respectively hinged to the output shaft and the rotating frame 5. The output shaft of the driving cylinder 8 drives the rotating frame 5 to rotate through the connecting rod 6. On the one hand, the driving cylinder can provide the rotating frame with the force required for bending. On the other hand, the driving cylinder and the connecting rod are linked to facilitate the determination of the initial rotation angle and the bending end angle of a single bend, thereby ensuring the accuracy of the bending.

[0037] The driving cylinder can be an electric cylinder with a low movement speed to ensure that the surface of the superconducting cable is fully extended before being bent. In the specific bending process, the controller can control the electric cylinder and the driving motor to work together and adjust the running speed of the two to ensure that the high-temperature superconducting cable does not lose its roundness during the bending process.

[0038] Since the driving cylinder provides bending force through the connecting rod during the cable bending process, the driving cylinder is subjected to a large force. In order to prevent the driving cylinder from tilting due to the force during the bending process, the present embodiment further includes a guide plate 13, which is mounted on the bending wheel die 7. The guide plate 13 is arranged parallel to the output shaft of the driving cylinder 8 and is located on the side of the driving cylinder 8 away from the clamp 3. During the lifting process of the driving cylinder, the guide plate provides support and guidance to the driving cylinder from one side to prevent the driving cylinder from tilting.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable cable bending machine, characterized in that: include: A bending wheel die (7), a fixture (3), a rotating frame (5), a shaping die (4) and a first driving mechanism; A rotating shaft is provided on the bending wheel die (7) and an arc-shaped die groove centered on the rotating shaft is provided on the outer wall. The clamp (3) is mounted on the bending wheel die (7) and is located at one end of the arc-shaped die groove. The rotating frame (5) is located at one side of the bending wheel die (7) and is rotatably mounted on the bending wheel die (7) via the rotating shaft. The shaping die (4) is located outside the arc-shaped die groove. The first driving mechanism is connected to the rotating frame (5) and is used to drive the rotating frame (5) to rotate around the rotating shaft, so as to drive the shaping die (4) to rotate around the bending wheel die (7). The cable (10) is bent by the cooperation of the positioning die (4) and the bending wheel die (7).

2. The portable cable bending machine according to claim 1, characterized in that: It also comprises a cable wall extrusion assembly, which is used to extrude the cable wall so that the side of the cable wall away from the bending wheel mold (7) is extended before the cable (10) is bent.

3. The portable cable bending machine according to claim 2, characterized in that: The cable wall extrusion assembly comprises an extrusion seat (14), which is mounted on a rotating frame (5); an extrusion die groove matching the arc-shaped die groove is provided on the side of the extrusion seat (14) close to the bending wheel die (7); and an extrusion structure for the cable wall away from the bending wheel die (7) is provided on the inner wall of the extrusion die groove.

4. The portable cable bending machine according to claim 1, characterized in that: The shaping die (4) comprises an extrusion seat (14), which is mounted on a rotating frame (5). The extrusion seat (14) is provided with an extrusion die groove matching the arc-shaped die groove on a side close to the bending wheel die (7), and an inner wall of the extrusion die groove is provided with an extrusion structure for the side of the cable wall away from the bending wheel die (7).

5. The portable cable bending machine according to claim 3 or 4, characterized in that: A mounting groove for accommodating a driving wheel (11) is provided in the middle of the extrusion seat (14), a driving wheel (11) rotatably mounted is provided in the mounting groove, the rotating shaft of the driving wheel (11) is arranged along the tangential direction of the bending wheel die (7), the outer wall of the driving wheel (11) is provided with ball driving teeth, so that a ball driving groove is formed between the driving wheel (11) and the side wall of the mounting groove, the inner wall of the extrusion die groove is provided with a ball groove, the ball driving groove and the ball groove are connected end to end to form a ring-shaped ball rolling path, the ball (12) is provided in the ball rolling path, the ball (12) is protruded on the inner wall of the extrusion die groove to form the extrusion structure, and the driving wheel (11) is rotated to push the ball (12) in the ball groove to roll along the cable wall; Preferably, the ball raceway is located on a plane perpendicular to the axial direction of the driving wheel.

6. The portable cable bending machine according to claim 5, characterized in that: It also includes a second driving mechanism, wherein a driving shaft of the second driving mechanism is connected to the driving wheel (11) for driving the driving wheel (11) to rotate; Preferably, the second driving mechanism comprises a driving motor (1) and a reducer (2); the driving motor (1) is mounted on the rotating frame (5); and the driving shaft of the driving motor (1) is connected to the driving wheel (11) via the reducer motor.

7. The portable cable bending machine according to any one of claims 3 to 6, characterized in that: A temperature sensor is provided on the extrusion seat (14) for detecting the temperature of the extrusion area.

8. The portable cable bending machine according to claim 1, characterized in that: It also includes a guide wheel (9), which is located on the side of the shaping die (4) away from the clamp (3), and the guide wheel (9) is arranged parallel to the bending wheel die (7) and is rotatably mounted on the rotating frame (5).

9. The portable cable bending machine according to claim 1, characterized in that: The first driving mechanism comprises a driving cylinder (8) and a connecting rod (6). The driving cylinder (8) is mounted on the bending wheel die (7) and its output shaft is arranged perpendicular to the rotating shaft. The two ends of the connecting rod (6) are respectively hinged to the output shaft and the rotating frame (5). The output shaft of the driving cylinder (8) drives the rotating frame (5) to rotate through the connecting rod (6).

10. The portable cable bending machine according to claim 9, characterized in that: It also includes a guide plate (13), which is installed on the bending wheel mold (7). The guide plate (13) is arranged parallel to the output shaft of the driving cylinder (8) and is located on the side of the driving cylinder (8) away from the clamp (3).

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