Hydraulic crimping die for cable intermediate joint

Abstract

The invention relates to the technical field of cable crimping, and discloses a cable intermediate joint hydraulic crimping die which comprises a hydraulic crimping mechanism arranged on a base, a peeling pipe is rotatably connected above the base, a rotating mechanism for driving the peeling pipe to rotate is arranged at one end of the peeling pipe, and a cutting opening is formed in the outer wall of the peeling pipe. A cutting mechanism is arranged in the cutting opening, a rotating mechanism is arranged on the outer wall of the peeling pipe, and the rotating mechanism and the cutting mechanism are located in the same vertical plane. According to the invention, through the cooperation of the shallow ring cutting of the cutting mechanism, the radial gap formed by pressing the balls and the secondary ring cutting of the stripping pipe, the cable sheath is stripped without damage under the condition that the cable core is not contacted; a telescopic mechanism and a ball force application structure remarkably improve the ring cutting precision, and a wire core is prevented from being scratched; the compounding effect of the molting belt and the driving roller can completely pull out the outer skin and promote the wire cores to be automatically gathered together, so that the subsequent crimping efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of cable crimping technology, and in particular to a hydraulic crimping mold for cable intermediate joints. Background Technology

[0002] Cable joints are key components that connect different sections of cable in a cable line. Intermediate joints are used for intermediate connections in the line, while terminal joints are used at the end of the line. Their functions include locking the incoming and outgoing lines and providing waterproof, dustproof and shockproof protection. Locking is usually accomplished with the help of crimping devices.

[0003] When fabricating and repairing cable joints, the cable sheath must first be stripped to expose the internal conductors. Current stripping processes often involve manually cutting the outer sheath with a knife or using mechanical cutting tools, then pulling the entire cable away. However, this method is highly dependent on the operator's experience and the depth of the cutting tool. When the cable diameter varies, the sheath hardness is uneven, or the conductor structure is complex, the cutting depth is difficult to control precisely, easily leading to excessive cutting, causing scratches, broken wires, or deformation of the conductor. This, in turn, affects the conductor's integrity, leading to increased contact resistance and reduced connection reliability after crimping.

[0004] In view of this, the present invention proposes a hydraulic crimping mold for cable intermediate joints to solve the problems existing in the prior art. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic crimping mold for cable intermediate joints.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A hydraulic crimping mold for cable joints includes a base, on which a hydraulic crimping mechanism is mounted. A stripping tube is rotatably connected above the base, and a rotating mechanism driving the stripping tube to rotate is provided at one end of the stripping tube. A cutting opening is provided on the outer wall of the stripping tube, and a cutting mechanism is provided in the cutting opening. A rotating mechanism is provided on the outer wall of the stripping tube, and the rotating mechanism and the cutting mechanism are located in the same vertical plane. Two telescopic mechanisms are provided on the rotating mechanism, and two ball bearing bases are symmetrically arranged between the two telescopic mechanisms. A connecting column is installed between each ball bearing base and its corresponding telescopic mechanism, and a pressing ball is provided on the opposite side of each of the two ball bearing bases.

[0007] As a further technical solution, the hydraulic pressing mechanism includes two support frames fixedly connected to the base, each of which is equipped with a hydraulic cylinder, and the extension and retraction ends of the two hydraulic cylinders are fixedly connected with a semi-circular pressing plate.

[0008] As a further technical solution, the rotating mechanism includes a driven gear fixedly connected to the outer wall of the peeling tube, a driving gear meshing below the driven gear, and a driving motor for driving its rotation is provided on the driving gear, the driving motor being fixedly connected to the top outer wall of the base.

[0009] As a further technical solution, the telescopic mechanism includes a receiving box, an electromagnet is provided in the middle of the receiving box, and magnetic plates are provided on both sides of the electromagnet. Telescopic plates are slidably connected to the outer walls of both sides of the receiving box, and one end of each telescopic plate is fixedly connected to the corresponding magnetic plate. A return spring is fixedly connected between the magnetic plate and the electromagnet.

[0010] As a further technical solution, the rotating mechanism includes a positioning block and a drive shaft is rotatably connected to the positioning block. One end of the drive shaft is provided with a servo motor for driving its rotation.

[0011] As a further technical solution, the cutting mechanism includes a cutting blade disposed in the cutting opening, an electric telescopic rod disposed above the cutting blade, and a connecting plate fixedly connected to the telescopic end of the electric telescopic rod, and the cutting blade handle is fixedly connected to the connecting plate.

[0012] As a further technical solution, electric telescopic rods are installed on both outer walls of the other end of the peeling tube, and U-shaped frames are fixedly connected to the telescopic ends of the two electric telescopic rods. Two drive rollers are rotatably connected inside the two U-shaped frames, and arc grooves are opened in the middle of the drive rollers. A peeling belt with anti-slip texture is sleeved on the outer wall of the two drive rollers.

[0013] As a further technical solution, one end of the drive roller is fixedly connected to a bevel gear two, and the other side of the bevel gear two is provided with a driven shaft that is rotatably connected to the U-shaped frame. One end of the driven shaft is fixedly connected to a bevel gear one that meshes with the bevel gear two.

[0014] As a further technical solution, a positioning block 2 is provided on one side of the U-shaped frame and embedded in the peeling tube. A drive shaft 2 is rotatably connected in the positioning block 2. A servo motor 2 is provided at one end of the drive shaft 2 to rotate it, and a telescopic universal coupling is provided between the other end of the drive shaft 2 and the driven shaft.

[0015] The beneficial effects of this invention are as follows: The cable sheath is stripped without contact with the wire core through the shallow ring cutting of the cutting mechanism, the radial gap formed by the pressing ball, and the secondary ring cutting of the stripping tube. The telescopic mechanism and the ball force structure significantly improve the ring cutting accuracy and avoid scratching the wire core. The combined action of the stripping belt and the drive roller can completely remove the sheath and promote the automatic gathering of the wire core, thereby improving the efficiency of subsequent crimping. The entire device operates in tandem, enabling continuous operation of peeling, core extraction, and crimping, ensuring reliable and efficient operation. Attached Figure Description

[0016] Figure 1 A schematic diagram of a hydraulic crimping mold for cable intermediate joints; Figure 2 A schematic diagram of the stripping tube structure of a hydraulic crimping mold for cable intermediate joints; Figure 3 A schematic diagram of the telescopic mechanism of a hydraulic crimping mold for cable intermediate joints; Figure 4 A schematic diagram of the cutting mechanism of a hydraulic crimping mold for cable intermediate joints; Figure 5 A schematic diagram of a U-shaped frame structure for a hydraulic crimping mold for cable intermediate joints; Figure 6 This is a schematic diagram of the drive roller structure of a hydraulic crimping die for cable intermediate joints.

[0017] In the diagram: 1. Base; 2. Drive motor; 3. Drive gear; 4. Support frame; 5. Hydraulic cylinder; 6. Semi-circular arc pressing plate; 7. Driven gear; 8. Peeling tube; 9. Connecting plate; 10. Support shaft; 11. Receiving box; 12. Connecting column; 13. Ball bearing base; 14. Pressing ball bearing; 15. Drive shaft one; 16. Positioning block one; 17. Servo motor one; 18. U-shaped frame; 19. Cutting opening; 20. Telescopic plate; 21. Magnetic plate; 22. Electromagnet; 23. Return spring; 24. Cutting blade; 25. Electric telescopic rod one; 26. Drive shaft two; 27. Positioning block two; 28. Servo motor two; 29. ​​Electric telescopic rod two; 30. Telescopic universal coupling; 31. Driven shaft; 32. Bevel gear one; 33. Drive roller; 34. Bevel gear two; 35. Shedding belt; 36. Arc groove. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0019] This invention provides a hydraulic crimping mold for cable joints, which aims to achieve phased and controllable stripping of the cable sheath without damaging the cable core. By using the coordinated actions of shallow cutting, pressing and forming, and secondary circumferential cutting, a stable radial gap is formed, thereby significantly reducing the risk of the cable core being scratched, broken, or misaligned. At the same time, by utilizing the linkage between the stripping traction and the crimping mechanism, the quality of the exposed cable core and the reliability and consistency of subsequent crimping are improved, thereby enhancing the efficiency and stability of cable connection operations.

[0020] Overall structure reference Figure 1 , Figure 2As shown, a hydraulic crimping mold for cable intermediate joints includes a base 1, on which a hydraulic crimping mechanism is installed. The hydraulic crimping mechanism is used to clamp, crimp, and extract the core wire after stripping the cable. A stripping tube 8 is rotatably connected above the base 1. A cutting opening 19 is opened on the outer wall of the stripping tube 8. A cutting mechanism is installed in the cutting opening 19. A rotating mechanism is connected to one end of the stripping tube 8 to drive it to rotate around its own axis in order to cooperate with the cutting mechanism to complete the circumferential cutting operation of the cable outer sheath. The outer wall of the stripping tube 8 is provided with a rotating mechanism, which is located on the same vertical plane as the cutting mechanism. Two telescopic mechanisms are installed on it, and two ball bearing bases 13 are symmetrically installed between the two telescopic mechanisms. Each ball bearing base 13 is fixedly connected to the corresponding telescopic mechanism with a connecting column 12. Pressing balls 14 are installed on opposite sides of the two ball bearing bases 13. The pressing balls 14 are used to apply radial force to the cable sheath, so that the cable sheath produces local controllable deformation, thereby forming the radial gap required for cutting. Before the cable is crimped, the cable end is first passed through the hydraulic crimping mechanism and the stripping tube 8 in sequence, and then through the two pressing balls 14. When the part of the cable to be stripped moves to the bottom of the cutting mechanism, the hydraulic crimping mechanism is activated, and its strong clamping force is used to firmly fix the cable to ensure that the cable does not shift during subsequent operations. After the cable is fixed, the rotating mechanism first drives the two telescopic mechanisms and the pressing ball 14 on them to rotate as a whole, so that they are offset from the cutting mechanism in the circumferential direction, making room for the cutting operation. Then, the cutting mechanism starts and cuts into the cable sheath along the cutting opening 19. By precisely controlling the cutting depth, 5%-10% of the sheath thickness is not cut through, forming a ring-shaped cut. This design can effectively prevent damage to the internal wire core. After the initial circumferential cutting is completed, the rotating mechanism is restarted, driving the two pressing balls 14 to move toward the cable surface. At the same time, the telescopic mechanism is activated to precisely adjust the distance between the two pressing balls 14, ensuring that their action point is close to the circumferential cut to optimize the deformation effect. The contact point height between each pressing ball 14 and the cable sheath is consistent with the cutting height of the cutting mechanism. As the rotating mechanism continues to operate, the two pressing balls 14 simultaneously apply equal and opposite radial forces to the cable. Since the two force points are located symmetrically at the annular cut, the cable sheath undergoes radial compression deformation under this action, causing the sheath area between the two force points to form a slope deformation that rises from both sides to the center. This stretches the thin layer outside the annular cut and creates a slight opening. At the same time, the cable core inside the cable is slightly offset downwards towards the center of the cable due to the overall bending effect generated by the pressing balls 14. The coordinated and opposite movements of "the outer sheath being pulled outwards and upwards" and "the core shifting inwards and downwards" ultimately form a critical radial gap between the inner wall of the annular cut thin layer and the outer side of the core. At this time, the rotating mechanism drives the stripping tube 8 to move the cutting mechanism again. The cutting blade 24 then precisely cuts the remaining thin layer along the existing annular cut. Due to the existence of the radial gap, the blade can completely cut the thin layer while ensuring that it does not come into contact with the internal conductor, thus achieving non-destructive stripping and eliminating the risk of wire core scratches or wire breakage. After the cutting is completed, the hydraulic crimping mechanism releases the cable, and the operator can move the cable and use the hydraulic crimping mechanism to clamp the circumferentially cut cable sheath to easily pull the cable core out of the sheath completely. After pulling out the core, the hydraulic crimping mechanism clamps the connector again and inserts the multiple cable cores to be connected into the connector. Finally, the hydraulic crimping mechanism performs the crimping operation to complete all the work.

[0021] Reference Figure 1 As shown, as a further embodiment of the present invention, the hydraulic pressing mechanism includes two support frames 4 fixedly connected to the base 1. Each support frame 4 is equipped with a hydraulic cylinder 5, and the extension and retraction ends of the two hydraulic cylinders 5 are fixedly connected to a semi-circular arc pressing plate 6. The hydraulic cylinders 5 drive the semi-circular arc pressing plates 6 to move. Through the synchronous extension and retraction of the hydraulic cylinders 5, the distance between the two semi-circular arc pressing plates 6 can be changed, thereby flexibly realizing different functional requirements from firm clamping to reliable pressing.

[0022] Reference Figure 1 As shown, as a further embodiment of the present invention, the rotating mechanism includes a driven gear 7 fixedly mounted on the outer wall of the peeling tube 8, and a driving gear 3 meshing below the driven gear 7. The driving gear 3 is driven by a driving motor 2 mounted on the top of the base 1. This design provides stable and controllable rotational power, ensuring that the peeling tube 8 and its internal mechanism can be accurately positioned.

[0023] Reference Figure 3As shown, as a further embodiment of the present invention, the telescopic mechanism includes a housing 11, an electromagnet 22 installed in the middle of the housing 11, magnetic plates 21 installed on both sides of the electromagnet 22, and telescopic plates 20 slidably connected to the outer walls of both sides of the housing 11. One end of each telescopic plate 20 is fixedly connected to the magnetic plate 21, and a return spring 23 is fixedly connected between the magnetic plate 21 and the electromagnet 22. The electromagnet 22 attracts the magnetic plates 21 on both sides by magnetic force, overcomes the elastic force of the return spring 23, and pushes the telescopic plate 20 to extend. By precisely controlling the current input to the electromagnet 22, its magnetic force can be linearly adjusted, thereby achieving stepless and precise control of the extension length of the telescopic plate 20 to adapt to cables of different diameters.

[0024] Reference Figure 2 As shown, as a further embodiment of the present invention, the rotating mechanism includes a positioning block 16, and a drive shaft 15 is rotatably connected to the positioning block 16. One end of the drive shaft 15 is provided with a servo motor 17 for driving its rotation. The servo motor 17 drives the drive shaft 15, causing one telescopic mechanism to rotate as a whole. The other telescopic mechanism is rotated and supported by the support shaft 10. This structure ensures that the two pressing balls 14 can rotate synchronously as a rigid whole, maintaining the stability of their relative positions.

[0025] Reference Figure 2 , Figure 4 As shown, as a further embodiment of the present invention, the cutting mechanism includes a cutting blade 24 disposed in the cutting opening 19, an electric telescopic rod 25 disposed above the cutting blade 24, and a connecting plate 9 fixedly connected to the telescopic end of the electric telescopic rod 25. The handle of the cutting blade 24 is fixedly connected to the connecting plate 9. The connecting plate 9 and the cutting blade 24 are driven downward by the electric telescopic rod 25. This linear drive method ensures the smoothness and accuracy of the cutting blade 24 during the cutting process, which is the key to achieving controllable depth cutting.

[0026] Working principle: When stripping and crimping cables, the cable end first passes through the hydraulic crimping mechanism on the base 1 and extends into the stripping tube 8. The hydraulic cylinder 5 drives the two semi-circular crimping plates 6 to tighten inward, achieving a wrapping clamping of the cable. This keeps the axial and radial positions of the cable stable within the stripping tube 8, providing a rigid support foundation for subsequent ring cutting, pressing, and stripping processes. Subsequently, the drive motor 2 drives the drive gear 3 to mesh with the driven gear 7, causing the stripping tube 8 to rotate steadily around its own axis. The electric telescopic rod 25 drives the cutting blade 24 to cut into the cable sheath at a preset depth through the cutting opening 19, forming an incompletely cut annular initial thin layer. As the stripping tube 8 continues to rotate, it forms a closed and uniform annular cut, providing a cutting reference for thin layer disconnection and core protection. After the initial cut is formed, the servo motor 17 drives the drive shaft 15 to rotate the two telescopic mechanisms and the pressing balls 14 on them as a whole, so that the pressing balls 14 and the cutting blade 24 are misaligned in the circumferential direction, reserving a ring-cutting channel for subsequent pressing force. At the same time, under the control of the input current, the electromagnet 22 attracts the magnetic plates 21 on both sides to overcome the elastic force of the return spring 23 and push the telescopic plate 20 outward, so that the two pressing balls 14 approach the position parallel to the height of the cut in a controllable manner and achieve symmetrical contact with the cable sheath. As the rotating mechanism continues to operate, the two pressing balls 14 press the cable sheath with equal and opposite radial forces, so that the cable sheath produces inward radial compression deformation between the two force points and shows a slope deformation trend that gradually rises from both sides to the middle near the cut. This causes the outer side of the ring-cut thin layer to open slightly in the radial direction, while the cable core inside produces a slight downward bias effect under this symmetrical force, creating a critical radial gap between the outer periphery of the core and the thin layer of the cut. Once the radial gap is formed, the peeling tube 8 rotates again under the drive of the drive motor 2, causing the cutting blade 24 to run along the existing annular cutting path again, precisely cutting off the remaining thin layer. Due to the existence of the radial gap, the blade only acts on the lifted thin layer without touching the internal wire core, thereby achieving completely non-destructive annular cutting separation. After the cutting action is completed, the hydraulic crimping mechanism releases the cable, allowing the cable to move axially. Then, the semi-circular crimping plate 6 clamps the cable sheath that has been completely circumferentially cut. The extension and retraction action of the hydraulic cylinder 5 separates the sheath from the wire core and pulls the wire core out of the sheath cavity, forming a clean and undamaged conductor end. After the cable core is successfully extracted, the hydraulic crimping mechanism performs a clamping action for the third time, inserting the cable core to be connected into the preset metal connector. The hydraulic cylinder 5 drives the two semi-circular crimping plates 6 to tighten synchronously, so that the connector and the core can achieve full plastic deformation and tight bonding in the radial direction, completing the crimping process.

[0027] Reference Figure 2 , Figure 5 , Figure 6 As shown, electric telescopic rods 29 are installed on both outer walls of the other end of the stripping tube 8, and U-shaped frames 18 are fixedly connected to the telescopic ends of the two electric telescopic rods 29. Two drive rollers 33 are rotatably connected inside the two U-shaped frames 18, and arc grooves 36 are opened in the middle of the drive rollers 33. The outer walls of the two drive rollers 33 are fitted with stripping belts 35 with anti-slip textures. Under the action of the electric telescopic rods 29, the drive rollers 33 inside the U-shaped frames 18 hold the cable tightly through the arc grooves 36 and the stripping belts 35. This structure can firmly clamp the cable from both sides during circumferential cutting, effectively resist the cutting torque, prevent the cable from slipping or twisting, and greatly improve the quality and efficiency of circumferential cutting.

[0028] Reference Figure 5 As shown, as a further embodiment of the present invention, one end of a drive roller 33 is fixedly connected to a bevel gear 34, and the other side of the bevel gear 34 is provided with a driven shaft 31 that is rotatably connected to the U-shaped frame 18. One end of the driven shaft 31 is fixedly connected to a bevel gear 32 that meshes with the bevel gear 34. This bevel gear transmission pair converts power from axial rotation to radial rotation, has a compact structure, and high transmission efficiency.

[0029] Reference Figure 5 As shown, as a further embodiment of the present invention, a positioning block 27 embedded in the peeling tube 8 is provided on one side of the U-shaped frame 18, and a drive shaft 26 is rotatably connected in the positioning block 27. A servo motor 28 is provided at one end of the drive shaft 26 to rotate it, and a telescopic universal coupling 30 is provided between the other end of the drive shaft 26 and the driven shaft 31. The servo motor 28 drives the drive roller 33 through the drive shaft 26, the telescopic universal coupling 30 and the bevel gear set. When it is necessary to remove the cable sheath, the transmission system is activated, causing the stripping belt 35, which is sleeved on the drive roller 33, to move. The stripping belt 35 provides strong axial friction through the anti-slip texture on its surface, while the rotation of the stripping tube 8 provides it with twisting force. Under the combined action of these two forces, the cut sheath is removed efficiently and completely, and a gathering effect is applied to the loose core wires inside, making them tightly closed into a spiral shape, which greatly facilitates the subsequent insertion of the connector.

[0030] Working principle: During the stripping process, when it is necessary to completely peel the cut outer sheath from the core, the servo motor 28 drives the drive roller 33 inside the U-shaped frame 18 to rotate through the drive shaft 26, the telescopic universal coupling 30, and the bevel gear set. This causes the stripping belt 35 covering the outer surface of the drive roller 33 to form a stable axial frictional traction force on the cable sheath under the action of its anti-slip texture. Under the twisting effect generated by the continuous rotation of the stripping tube 8, the cut outer sheath is efficiently detached along the cable direction under the combined action of axial traction force and circumferential twisting force. At the same time, the internal core automatically gathers into a tight spiral shape under the action of twisting and slight tension, which makes it easier to insert the connector and significantly improves the crimping quality.

[0031] 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 hydraulic crimping die for cable intermediate joint, comprising a base (1) on which a hydraulic crimping mechanism is provided, characterized in that, The base (1) is rotatably connected with a stripping pipe (8), and one end of the stripping pipe (8) is provided with a rotating mechanism for driving the rotation thereof, the outer wall of the stripping pipe (8) is provided with a cutting opening (19), and the cutting opening (19) is provided with a cutting mechanism, the outer wall of the stripping pipe (8) is provided with a rotating mechanism, and the rotating mechanism and the cutting mechanism are located in the same vertical plane, two telescopic mechanisms are provided on the rotating mechanism, and two ball bearing seats (13) are symmetrically provided between the two telescopic mechanisms, a connecting column (12) is installed between the ball bearing seat (13) and the corresponding telescopic mechanism, and the opposite sides of the two ball bearing seats (13) are provided with pressing balls (14).

2. The hydraulic crimping die for cable intermediate joint according to claim 1, characterized by The hydraulic pressure connection mechanism comprises two support frames (4) fixedly connected to the base (1), and a hydraulic cylinder (5) is installed on each of the two support frames (4), and a semicircular arc pressure connection plate (6) is fixedly connected to the telescopic end of each of the two hydraulic cylinders (5).

3. The hydraulic crimping die for cable intermediate joint according to claim 1, characterized by The rotating mechanism comprises a driven gear (7) fixedly connected to the outer wall of the stripping pipe (8), the lower part of the driven gear (7) is engaged with a driving gear (3), the driving gear (3) is provided with a driving motor (2) for driving the rotation thereof, and the driving motor (2) is fixedly connected to the top outer wall of the base (1).

4. The hydraulic crimping die for cable intermediate joint according to claim 1, characterized by The telescopic mechanism comprises a containing box (11), the middle part of the containing box (11) is provided with an electromagnet (22), the two sides of the electromagnet (22) are provided with magnetic plates (21), the outer walls of the two sides of the containing box (11) are slidably connected with telescopic plates (20), one end of each of the telescopic plates (20) is fixedly connected with the corresponding magnetic plate (21), and the magnetic plate (21) and the electromagnet (22) are fixedly connected with a return spring (23).

5. The hydraulic crimping die for cable intermediate joint according to claim 1, wherein The rotating mechanism comprises a positioning block one (16), and a driving shaft one (15) is rotatably connected to the positioning block one (16), one end of the driving shaft one (15) is provided with a servo motor one (17) for driving the rotation thereof.

6. The hydraulic crimping die for cable intermediate joints according to claim 1, characterized in that, The cutting mechanism comprises a cutting knife (24) provided in the cutting opening (19), an electric telescopic rod one (25) is provided above the cutting knife (24), and a connecting plate (9) is fixedly connected to the telescopic end of the electric telescopic rod one (25), and the knife handle of the cutting knife (24) is fixedly connected with the connecting plate (9).

7. The hydraulic crimping die for cable intermediate joint according to claim 1, wherein The other end of the stripping pipe (8) is provided with an electric telescopic rod two (29) on the outer wall of each side, and the telescopic end of each of the two electric telescopic rod two (29) is fixedly connected with a U-shaped frame (18), two driving rollers (33) are rotatably connected in the two U-shaped frames (18), arc-shaped grooves (36) are formed in the middle parts of the driving rollers (33), and the outer walls of the two driving rollers (33) are sleeved with a molting belt (35) with anti-skid lines on the surface.

8. The hydraulic crimping die for cable intermediate joints according to claim 7, characterized in that, One end of one of the driving rollers (33) is fixedly connected with a bevel gear two (34), the other side of the bevel gear two (34) is provided with a driven shaft (31) rotatably connected with the U-shaped frame (18), and one end of the driven shaft (31) is fixedly connected with a bevel gear one (32) engaged with the bevel gear two (34).

9. The hydraulic crimping die for cable intermediate joints according to claim 8, characterized in that, The U-shaped frame (18) is provided with a positioning block two (27) embedded in the stripping pipe (8) on one side, and the positioning block two (27) is rotatably connected with a driving shaft two (26), one end of the driving shaft two (26) is provided with a servo motor two (28) for rotating it, and a telescopic universal coupling (30) is arranged between the other end of the driving shaft two (26) and a driven shaft (31).

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