Portable cable bender

Abstract

The application discloses a portable cable bending machine, which is characterized in that an arc-shaped die groove is arranged on a bending wheel die 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 frame is rotatably installed on the bending wheel die, and a shaping die is installed on the rotating frame; a first driving mechanism drives 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 through cooperation of the shaping die groove and the arc-shaped die groove. Through the above-mentioned portable cable bending machine with the optimized design, the structure is light and compact, and the portable cable bending machine is convenient to move; the clamp is used to fix the bending machine at a bending position of the cable; the rotating frame drives the shaping die to rotate, the cable is bent at a specified position, the circular arc degree of the steel armor is ensured, the out-of-roundness is effectively avoided, and the superconducting effect of the high-temperature superconducting cable after bending is ensured.

Description

Technical Field

[0001] This invention relates to the field of cable bending technology, and more particularly to a portable cable bending machine. Background Technology

[0002] High-temperature superconducting cables are superconducting cables that can achieve zero resistance at temperatures above -196°C. Typically, high-temperature superconducting cables have an outer stainless steel armor layer and a solid inner structure, making them difficult to bend. Therefore, bending requires moving the cable to large bending equipment. This results in poor flexibility in bending specific locations. Furthermore, the bending angle and radius cannot be well controlled during bending, leading to out-of-roundness during the return bend. This out-of-roundness affects the superconducting effect and cannot be corrected using conventional mandrels. In the field of high-temperature superconductivity, there are strict requirements for the superconducting effect of the cable, and the return bend of the conductor is indispensable. Therefore, a bending machine needs to be designed to ensure that the high-temperature superconducting cable does not lose its roundness during bending, thus guaranteeing the superconducting effect. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention proposes a portable cable bending machine.

[0004] The present invention proposes a portable cable bending machine, comprising: a bending die, a clamp, a rotating frame, a shaping die, and a first driving mechanism; The bending die has a rotating shaft and an arc-shaped mold groove centered on the rotating shaft on its outer wall. A clamp is installed on the bending die and located at one end of the arc-shaped mold groove. A rotating frame is located on one side of the bending die and is rotatably installed on the bending die via the rotating shaft. A shaping die is located outside the arc-shaped mold groove. A first driving mechanism is connected to the rotating frame to drive the rotating frame to rotate around the rotating shaft, thereby driving the shaping die to rotate around the bending die. The cable is bent by the cooperation of the shaping die and the bending die.

[0005] Preferably, it also includes a cable wall extrusion assembly for extruding the cable wall away from the side of the bending die before the cable bends.

[0006] Preferably, the cable wall extrusion assembly includes an extrusion seat mounted on a rotating frame. The extrusion seat has an extrusion groove that mates with the arc-shaped mold groove on the side near the bending mold. The inner wall of the extrusion groove has an extrusion structure for the side of the cable wall away from the bending mold.

[0007] Preferably, the shaping mold includes an extrusion seat, which is mounted on a rotating frame. The extrusion seat has an extrusion mold groove that mates with the arc-shaped mold groove on the side near the bending wheel mold. The inner wall of the extrusion mold groove has an extrusion structure for the side of the cable wall away from the bending wheel mold.

[0008] Preferably, the extrusion base has a mounting groove in the middle for accommodating the drive wheel. The drive wheel is rotatably mounted in the mounting groove. The shaft of the drive wheel is arranged tangentially along the bending die. The outer wall of the drive wheel has ball drive teeth, so that a ball drive groove is formed between the drive wheel and the side wall of the mounting groove. The inner wall of the extrusion die groove has a ball groove. The ball drive groove and the ball groove are connected end to end to form an annular ball raceway. Balls are provided in the ball raceway. The balls protrude on the inner wall of the extrusion die groove to form the extrusion structure. The rotation of the drive wheel pushes the balls in the ball groove to roll along the cable wall. Preferably, the ball raceway is located on a plane perpendicular to the drive wheel axis.

[0009] Preferably, it further includes a second drive mechanism, the drive shaft of which is connected to the drive wheel for driving the drive wheel to rotate.

[0010] Preferably, the second drive mechanism includes a drive motor and a reducer. The drive motor is mounted on the rotating frame, and the drive shaft of the drive motor is connected to the drive wheel through the reducer motor.

[0011] Preferably, the extrusion seat is equipped with a temperature sensor for detecting the temperature of the extrusion area.

[0012] Preferably, it also includes a guide wheel, which is located on the side of the shaping mold away from the fixture, and is arranged parallel to the bending mold and rotatably mounted on the rotating frame.

[0013] Preferably, the first driving mechanism includes a driving cylinder and a connecting rod. The driving cylinder is mounted on the bending wheel mold and its output shaft is perpendicular to the rotating shaft. The two 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.

[0014] Preferably, it also includes a guide plate, which is mounted on the bending wheel mold and is arranged parallel to the output shaft of the drive cylinder and located on the side of the drive cylinder away from the fixture.

[0015] In this invention, a portable cable bending machine is proposed. The bending die has an arc-shaped groove centered on a rotating shaft. A clamp is mounted on the bending die and located at one end of the arc-shaped groove. A rotating frame is rotatably mounted on the bending die. A shaping die is mounted on the rotating frame, and its outer wall has a shaping groove that mates with the arc-shaped groove. A first driving mechanism drives the rotating frame to rotate around the rotating shaft, thereby causing the shaping die to rotate around the bending die. The cable is bent through the interaction of the shaping groove and the arc-shaped groove. This optimized portable cable bending machine is lightweight and easy to move. The clamp fixes the bending machine at the desired bending position of the cable. The rotating frame drives the shaping die to rotate, achieving bending at a specified position on the cable and ensuring the roundness of the steel armor bend, effectively preventing out-of-roundness and thus guaranteeing the superconducting effect of the high-temperature superconducting cable after bending. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the bending state in one embodiment of the portable cable bending machine proposed in this invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of one embodiment of a portable cable bending machine proposed in this invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the shaping mold in one embodiment of the portable cable bending machine proposed in this invention. Detailed Implementation

[0019] like Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the bending state in one embodiment of the portable cable bending machine proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of one embodiment of the portable cable bending machine proposed in this invention. Figure 3 This is a schematic diagram of the internal structure of the shaping mold in one embodiment of the portable cable bending machine proposed in this invention.

[0020] Reference Figure 1 and 2 The present invention proposes a portable cable bending machine, comprising a bending die 7, a clamp 3, a rotating frame 5, a shaping die, and a first driving mechanism; The bending mold 7 is provided with a rotating shaft and an arc-shaped mold groove centered on the rotating shaft on its outer wall. The clamp 3 is installed on the bending mold 7 and located at one end of the arc-shaped mold groove. The rotating frame 5 is located on one side of the bending mold 7 and is rotatably installed on the bending mold 7 via the rotating shaft. The shaping mold is located outside the arc-shaped mold 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 mold to rotate around the bending mold 7. The cable 10 is bent by the cooperation of the shaping mold 4 and the bending mold 7.

[0021] In the specific operation of the portable cable bending machine in this embodiment, the position to be bent on the cable 10 is determined, the bending machine is placed at the position, and fixed to the cable by a clamp, so that the cable extends tangentially along the arc-shaped groove of the bending die. Then, the first drive mechanism drives the rotating frame to rotate, causing the shaping die to squeeze the cable along the arc-shaped groove of the bending die, completing the bending of the cable at the designated position. During the bending process, the bending radius can be controlled by the size of the bending die, and the rotation angle of the rotating frame can be controlled by the first drive mechanism, thereby controlling the bending angle.

[0022] In this embodiment, the proposed portable cable bending machine has an arc-shaped mold groove centered on a rotating shaft on the bending die. A clamp is mounted on the bending die and located at one end of the arc-shaped mold groove. A rotating frame is rotatably mounted on the bending die. A shaping die is mounted on the rotating frame and has a shaping mold groove on its outer wall that mates with the arc-shaped mold groove. A first driving mechanism drives the rotating frame to rotate around the rotating shaft, thereby causing the shaping die to rotate around the bending die. The cable is bent through the interaction of the shaping mold groove and the arc-shaped mold groove. This optimized portable cable bending machine is lightweight and easy to move. The clamp fixes the bending machine at the desired bending position of the cable. The rotating frame drives the shaping die to rotate, bending and shaping the cable at a designated position while ensuring the roundness of the steel armor bend, effectively preventing out-of-roundness and thus guaranteeing the superconducting effect of the high-temperature superconducting cable after bending.

[0023] During the bending process, because the outer layer of the high-temperature superconducting cable is made of stainless steel armor, the rigidity and elasticity of the stainless steel armor will cause the bent position to spring back and deform after bending. Therefore, in a specific embodiment, the portable cable bending machine of this embodiment also includes a cable wall extrusion assembly. The cable wall extrusion assembly is used to extrude the cable wall, extending it away from the bending die 7 before the cable 10 is bent. Before being shaped by the shaping die, the cable wall extrusion assembly extrudes and extends the cable wall, reducing the extrusion stress applied by the shaping die during bending and shaping, thereby reducing the springback deformation during cable bending and thus reducing the occurrence of out-of-roundness.

[0024] Specifically, in the design of the cable wall extrusion assembly, the cable wall extrusion assembly includes an extrusion seat 14, which is mounted on a rotating frame 5. The extrusion seat 14 has an extrusion groove on the side near the bending die 7 that mates with the arc-shaped die groove. The inner wall of the extrusion groove has an extrusion structure for the side of the cable wall away from the bending die 7. During the bending process, the extrusion seat rotates with the rotating frame and mates with the cable in the bending die before the shaping die. The extrusion structure in the extrusion groove extrudes and extends the outer cable wall, which is subject to greater bending stress.

[0025] In specific design, the cable wall extrusion module can be set up separately, or the cable wall extrusion assembly can be integrated into the shaping mold, and the cable wall is extruded and extended during the shaping process through the shaping mold. Specifically, the shaping mold includes an extrusion seat 14, which is mounted on the rotating frame 5. The extrusion seat 14 has an extrusion mold groove that mates with the arc-shaped mold groove on the side near the bending wheel mold 7. The inner wall of the extrusion mold groove has an extrusion structure for the side of the cable wall away from the bending wheel mold 7.

[0026] To avoid damage to the cable wall caused by the extrusion structure during extrusion stretching, refer to... Figure 3In the specific design of the extrusion structure, the extrusion seat 14 has a mounting groove in the middle for accommodating the drive wheel 11. The drive wheel 11 is rotatably mounted within the mounting groove. The shaft of the drive wheel 11 is arranged tangentially along the bending die. The drive wheel 11 has ball drive teeth on its wall, forming a ball drive groove between the drive wheel 11 and the side wall of the mounting groove. The inner wall of the extrusion die groove has a ball groove. The ball drive groove and the ball groove are connected end-to-end to form an annular ball raceway. Balls 12 are located within the ball raceway, protruding from the inner wall of the extrusion die groove to form the extrusion structure. The rotation of the drive wheel 11 pushes the balls 12 in the ball groove to roll along the cable wall. During extrusion, the rotation of the drive wheel drives the balls to move within the raceway, thus forming a movable extrusion structure on the inner wall of the extrusion die groove. During the process of the balls extruding and extending the cable wall, the friction between them is converted into rolling friction, thereby avoiding hard damage to the cable wall.

[0027] In the specific design of the raceway, the ball raceway is located on a plane perpendicular to the axial direction of the drive wheel. The balls are compressed and extended circumferentially along the cable wall, forming circumferential extension marks on the outer wall of the cable wall, reducing the resistance to axial tension caused by bending. In actual design, multiple ball raceways can be designed to form multiple parallel extension marks on the outer side of the cable wall, thereby avoiding out-of-roundness.

[0028] In the material selection, the hardness of the selected ball material is greater than that of the superconducting cable material, and the hardness of the selected raceway material is greater than that of the ball material.

[0029] In this embodiment, a second drive mechanism is further included. The drive shaft of the second drive mechanism is connected to the drive wheel 11 to drive the drive wheel 11 to rotate. Further, the second drive mechanism includes a drive motor 1 and a reducer 2. The drive motor 1 is mounted on the rotating frame 5, and the drive shaft of the drive motor 1 is connected to the drive wheel 11 via the reducer motor. During operation, the movement speed of the balls can be controlled by the drive motor, thereby controlling the compression speed of the balls against the cable wall, and thus adjusting the compression progress according to the bending state.

[0030] To avoid excessive friction during the extrusion process affecting the bending process, a temperature sensor is installed on the extrusion seat 14 to detect the temperature of the extrusion area.

[0031] In another specific embodiment, the device of this embodiment further includes a guide wheel 9. The guide wheel 9 is located on the side of the shaping mold away from the clamp 3, and is arranged parallel to the bending mold 7 and rotatably mounted on the rotating frame 5. The guide wheel is equivalent to pre-bending the cable during bending, reducing the force on the shaping mold and improving the bending effect.

[0032] Furthermore, in a specific embodiment of the rotating frame, the rotating frame 5 includes two side frames, which are rotatably mounted on both sides of the bending die 7, with the shaping die and the extrusion seat 14 located between the two side frames. This ensures the reliability and stability of the shaping die applying force to the cable.

[0033] 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 mold 7, and its output shaft is perpendicular to the rotating shaft. The two ends of the connecting rod 6 are hinged to the output shaft and the rotating frame 5, respectively. 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 force required for bending the rotating frame; on the other hand, the linkage between the driving cylinder and the connecting rod facilitates the determination of the initial rotation angle and the end angle of a single bend, ensuring the accuracy of bending.

[0034] The drive cylinder can be an electric cylinder, which moves at a lower speed to ensure that the surface of the superconducting cable is fully stretched before bending. During the bending process, the controller can control the electric cylinder and the drive motor to work together and adjust their operating speeds to ensure that the high-temperature superconducting cable does not lose its roundness during bending.

[0035] During cable bending, the drive cylinder provides bending force through a connecting rod, resulting in significant stress on the cylinder. To prevent tilting of the drive cylinder during bending, this embodiment also includes a guide plate 13. The guide plate 13 is mounted on the bending die 7, parallel to the output shaft of the drive cylinder 8, and located on the side of the drive cylinder 8 away from the clamp 3. During the lifting and lowering of the drive cylinder, the guide plate provides support and guidance from one side, preventing tilting of the drive cylinder.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A portable cable bending machine, characterized in that, include: The bending wheel mold (7), the fixture (3), the rotating frame (5), the shaping mold and the first drive mechanism; The bending wheel mold (7) is provided with a rotating shaft and an arc-shaped mold groove centered on the rotating shaft on its outer wall. The clamp (3) is installed on the bending wheel mold (7) and located at one end of the arc-shaped mold groove. The rotating frame (5) is located on one side of the bending wheel mold (7) and is rotatably installed on the bending wheel mold (7) through the rotating shaft. The shaping mold is located outside the arc-shaped mold 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 mold to rotate around the bending wheel mold (7). The cable (10) is bent by the cooperation of the shaping mold and the bending wheel mold (7). It also includes a cable wall extrusion assembly for extruding the cable wall so that it extends away from the bending die (7) before the cable (10) bends; the cable wall extrusion assembly includes an extrusion seat (14) mounted on a rotating frame (5), the extrusion seat (14) having an extrusion groove that mates with the arc-shaped die groove on the side of the extrusion seat (14) near the bending die (7), the inner wall of the extrusion groove having an extrusion structure for the side of the cable wall away from the bending die (7); Alternatively, the forming mold includes an extrusion seat (14), which is mounted on a rotating frame (5). The extrusion seat (14) has an extrusion groove that mates with the arc-shaped mold groove on the side near the bending wheel mold (7). The inner wall of the extrusion groove has an extrusion structure for the side of the cable wall away from the bending wheel mold (7). The extrusion seat (14) has a mounting groove in the middle for accommodating the drive wheel (11). The drive wheel (11) is rotatably mounted in the mounting groove. The shaft of the drive wheel (11) is arranged tangentially along the bending die (7). The outer wall of the drive wheel (11) is provided with ball drive teeth, so that a ball drive groove is formed between the drive 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 drive groove and the ball groove are connected end to end to form a ring-shaped ball raceway. A ball (12) is provided in the ball raceway. The ball (12) protrudes from the inner wall of the extrusion die groove to form the extrusion structure. The drive wheel (11) rotates to push the ball (12) in the ball groove to roll along the cable wall.

2. The portable cable bending machine according to claim 1, characterized in that, The ball raceway is located on a plane perpendicular to the drive wheel axis.

3. The portable cable bending machine according to claim 1, characterized in that, It also includes a second drive mechanism, the drive shaft of which is connected to the drive wheel (11) for driving the drive wheel (11) to rotate.

4. The portable cable bending machine according to claim 3, characterized in that, The second drive mechanism includes a drive motor (1) and a reducer (2). The drive motor (1) is mounted on the rotating frame (5), and the drive shaft of the drive motor (1) is connected to the drive wheel (11) through the reducer motor.

5. The portable cable bending machine according to any one of claims 1, characterized in that, A temperature sensor is provided on the extrusion seat (14) to detect the temperature of the extrusion area.

6. 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 mold away from the fixture (3). The guide wheel (9) is set parallel to the bending wheel mold (7) and can be rotatably mounted on the rotating frame (5).

7. The portable cable bending machine according to claim 1, characterized in that, The first driving mechanism includes a driving cylinder (8) and a connecting rod (6). The driving cylinder (8) is mounted on the bending wheel mold (7) and its output shaft is set 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).

8. The portable cable bending machine according to claim 7, characterized in that, It also includes a guide plate (13), which is mounted on the bending wheel mold (7). The guide plate (13) is set parallel to the output shaft of the drive cylinder (8) and located on the side of the drive cylinder (8) away from the fixture (3).

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