Cable flexible joint single-end extrusion device

Abstract

The utility model discloses a cable flexible joint single-end extrusion device, belongs to the field of cables, and solves the problems of long time, high time cost and high process difficulty of a cable flexible joint preparation process in the prior art. In the application, the silica gel sleeve is sleeved on the cable flexible joint part, and two ends of the silica gel sleeve respectively extend to the cable end I and the cable end II; the flow divider is provided with a feed port and a discharge port, and the discharge port is communicated with the feed port; the feed port extends to one end of the silicon rubber case and is inserted into a space between the end part of the silicon rubber case and one surface of the cable end; and a rubber material extrusion port is formed between the other end of the silicon rubber case and the surface of the cable end II. According to the cable flexible joint single-end extrusion device and the flexible joint single-end extrusion method, the defects of an existing method and equipment are overcome, an injection process can be replaced by an extrusion process, the problem that an existing cable flexible joint preparation process is tedious is solved, and the influence of gas and impurities on the cable flexible joint is reduced.

Description

Technical Field

[0001] The utility model relates to a single-end extrusion device for a cable flexible joint, belonging to the field of cables. Background Art

[0002] In recent years, with the development of the national economy, long-distance ultra-high voltage direct current transmission projects have been widely used in China. Due to the limitations of production length and transportation conditions, a single cable cannot meet the actual needs of the project, so cable joint manufacturing technology becomes particularly important. Especially for cables in special use scenarios such as submarine cables, they may need to withstand certain external forces (such as bending, stretching) and chemical effects (such as seawater corrosion). Ordinary joint structures will be more prone to cracks, and the consequences of cracks will also be easier and faster to develop further (such as water tree reactions in seawater, causing insulation breakdown).

[0003] The current mainstream technology "two-step method" for preparing cable flexible joints is to first complete the filling and shaping of the insulating material in an injection molding device, and then complete the cross-linking of the filled insulating material in the molded structure in a cross-linking mold.

[0004] In the "two-step method" for preparing cable flexible joints, if the insulating material is in direct contact with the metal tooling mold, the metal material conducts heat quickly, which can easily cause excessive cross-linking of the insulating material; if a silicone sleeve is used to isolate the insulating material from the metal tooling mold, the thickness of the silicone sleeve needs to be set to a certain thickness to prevent excessive heating, but this setting can easily cause uneven heating of the cable flexible joint during the heating and cross-linking process. The cable flexible joint needs to be removed from the silicone sleeve and placed in a cross-linking mold for heating and cross-linking operations. Therefore, both preparation processes take a long time and have high time costs. At the same time, the "two-step method" for preparing cable flexible joints is to inject the insulating material into the tooling mold. It is difficult to remove the gas and impurities in the mold, which seriously affects the quality of the cable flexible joint and increases the difficulty of the process. Utility Model Content

[0005] The utility model provides a single-end extrusion device for a cable flexible joint, which improves the defects of the existing "two-step method" for preparing the cable flexible joint. The single-end extrusion device for the cable flexible joint can realize the extrusion process instead of the injection process, avoids the cumbersomeness of the existing cable flexible joint preparation process, and reduces the influence of gas and impurities on the cable flexible joint.

[0006] The technical solution adopted by the utility model is a single-end extrusion device for a cable flexible joint, comprising a cable flexible joint part and an outer die barrel, wherein the two sides of the cable flexible joint part are respectively provided with a cable end 1 and a cable end 2, and the outer die barrel is sleeved on the cable flexible joint part and covers a part of the cable end 1 and the cable end 2;

[0007] The single-end extrusion device of the cable flexible joint also includes a silicone sleeve and a diverter;

[0008] The silicone sleeve is sleeved on the cable flexible joint part and two ends of the silicone sleeve extend to the first cable terminal and the second cable terminal respectively;

[0009] The flow divider has a feed port and a discharge port, the discharge port is connected to the feed port; the feed port extends to one end of the silicone sleeve and is inserted into the space between the end of the silicone sleeve and a surface of the cable end;

[0010] A rubber extrusion port is formed between the other end of the silicone sleeve and the surface of the second cable terminal.

[0011] Optimally, in the above-mentioned single-end extrusion device for the cable flexible joint, the diverter is cylindrical, and the diverter is sleeved on one end of the cable;

[0012] The discharge port of the flow splitter is annular, and the annular discharge port of the flow splitter is sleeved on a cable end.

[0013] Optimally, the above-mentioned cable flexible joint single-end extrusion device has an outer mold barrel with two semi-cylindrical half-molds connected to form a cylindrical shape; the two half-molds of the outer mold barrel are respectively provided with connecting ears, and the connecting ears of the two half-molds are relatively fixed by bolts.

[0014] Optimally, in the above-mentioned single-end extrusion device for the cable flexible joint, the diverter comprises an inner die and an outer die, the inner die is arranged in the outer die and forms an absolute raw material extrusion space between the inner die and the outer die;

[0015] The feed inlet and the discharge outlet of the flow divider are connected with the raw material extrusion space;

[0016] The cable end passes through the inner mold of the diverter and is squeezed and fixed.

[0017] Optimized, in the above-mentioned single-end extrusion device for the cable flexible joint, the inner mold of the diverter includes a fan-shaped diverter inner mold and a peach-shaped diverter inner mold, and the outer mold of the diverter includes a fan-shaped diverter outer mold and a peach-shaped diverter outer mold;

[0018] The inner mold of the fan-shaped flow divider is relatively fixedly connected to the inner mold of the peach-shaped flow divider, and the outer mold of the fan-shaped flow divider is relatively fixedly connected to the outer mold of the peach-shaped flow divider;

[0019] The middle part of the shunt inner mold formed by the fan-shaped shunt inner mold and the peach-shaped shunt inner mold has a cavity penetrating the shunt inner mold. The cable end passes through the cavity in the middle part of the shunt inner mold and is squeezed and fixed by the fan-shaped shunt inner mold and the peach-shaped shunt inner mold.

[0020] Optimally, in the above-mentioned single-end extrusion device for the cable flexible joint, the end of the outer mold of the diverter has an extension end, and the extension end of the outer mold of the diverter extends into the end of the outer mold barrel;

[0021] The inner wall of the end of the outer mold cylinder is formed with an annular groove, and the surface of the extended end is provided with an annular protrusion extending into the annular groove.

[0022] Optimally, the above-mentioned single-end extrusion device of the cable flexible connector also includes a clamping ring; the clamping ring is installed in the annular groove; the end of the silicone sleeve extends between the clamping ring and the extended end of the diverter outer mold and is squeezed and fixed.

[0023] Optimally, in the above-mentioned single-end extrusion device for the cable flexible joint, one end of the outer die cylinder away from the diverter is connected to the tail workpiece 2 and the tail workpiece 1;

[0024] The tail workpiece 2 is flange-shaped and fixed to the end of the outer mold barrel by bolts; the tail workpiece 1 is cylindrical, and one end of the tail workpiece 1 is sleeved on the end of the tail workpiece 2 away from the outer mold barrel; the tail workpiece 2 and the tail workpiece are sleeved on the cable terminal 2;

[0025] One end of the tail workpiece 1 is provided with an annular fixing ring, and the tail workpiece 2 is provided with an annular groove, and the fixing ring of the tail workpiece 1 is clamped in the annular groove;

[0026] One end of the silicone sleeve away from the diverter extends to between the second cable end and the second and first tail workpieces and is squeezed and fixed.

[0027] Optimized, in the above-mentioned single-end extrusion device for the flexible cable joint, the inner diameter of the middle section of the silicone sleeve is smaller than the inner diameters of the two ends of the silicone sleeve;

[0028] The inner wall of the middle section of the silicone sleeve is spaced apart from the surface of the cable flexible connector;

[0029] The cable end 1 and the cable end 2 each have a tapered section at one end close to the cable flexible joint;

[0030] The silicone sleeve is provided with a fitting surface which fits the conical sections of the first cable end and the second cable end.

[0031] A flexible joint single-end extrusion method, using the above-mentioned cable flexible joint single-end extrusion device to extrude and cross-link insulating materials; comprising the following steps:

[0032] 1) Install the outer mold cylinder, diverter and silicone sleeve on the cable flexible joint, cable terminal 1 and cable terminal 2;

[0033] 2) The insulating material is squeezed from one end of the silicone sleeve into the space between the silicone sleeve and the cable flexible joint through the diverter, and the insulating material is squeezed out from the other end of the silicone sleeve;

[0034] During this process, the insulating material covers the entire cable flexible joint;

[0035] 3) After the insulating material completely covers the entire cable flexible joint, the outer mold cylinder is heated to cause a cross-linking reaction of the insulating material.

[0036] The advantages of this application are:

[0037] The single-end extrusion method of the flexible joint of the present application uses an extrusion process instead of an injection process. The insulating material is squeezed into the silicone sleeve from one end, and the thickness of the silicone sleeve that binds the molten insulating material can be greatly reduced. In the existing injection process, a thick rubber tube is required to prevent irregular deformation caused by uneven weight distribution of the insulating material. However, the thick rubber tube is heat-insulated, so it cannot be directly heated and cross-linked with the thick rubber tube. In the present application, an outer mold cylinder (3) is used in combination with a silicone sleeve (5) with a thinner wall thickness, which also plays a role in binding the insulating material. Since the thickness of the silicone sleeve (5) is relatively thin, it can be directly heated and cross-linked, reducing the "two-step method" of the cable flexible joint to one step, greatly reducing the time cost.

[0038] In addition, the insulating material is squeezed into the silicone sleeve from one end. During the squeezing process, the gas and impurities between the silicone sleeve and the cable flexible joint, the cable terminal one and the cable terminal two can be driven out from the other end of the silicone sleeve, thereby effectively discharging the gas and impurities, reducing the impurities and bubbles in the rubber at the cable flexible joint, and improving the quality of the cable flexible joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of this application;

[0040] Figure 2 This is a schematic diagram of the structure of the inner mold of the peach-shaped diverter of the present application;

[0041] Figure 3 for Figure 2 Rear view of

[0042] Figure 4 for Figure 2 Bottom view of

[0043] Figure 5 for Figure 2 Side view of

[0044] Figure 6 for Figure 5 Axial cross-sectional view of

[0045] Figure 7 This is a schematic structural diagram of the inner mold of the fan-shaped splitter of the present application;

[0046] Figure 8 for Figure 7 Rear view of

[0047] Fig. 9 for Figure 7 Side view of

[0048] Fig.10 for Figure 7 Bottom view of

[0049] Fig.11 for Fig. 9 Axial cross-sectional view of

[0050] Fig.12 A schematic structural diagram of the outer mold of the peach-shaped diverter of the present application;

[0051] Fig.13 for Fig.12 Rear view of

[0052] Fig.14 for Fig.12 Side view of

[0053] Fig.15 for Fig.12 Bottom view of

[0054] Fig.16 for Fig.14 Axial cross-sectional view of

[0055] Fig.17 A schematic structural diagram of the outer mold of the fan-shaped diverter of the present application;

[0056] Fig.18 for Fig.17 Rear view of

[0057] Fig.19 for Fig.17 Side view of

[0058] Fig. 20 for Fig.17 Bottom view of

[0059] Fig.21 for Fig.19 Axial cross-sectional view. DETAILED DESCRIPTION

[0060] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0061] As shown in the figure, the utility model is a single-end extrusion device for a cable flexible joint, comprising a cable flexible joint part 1, an outer mold cylinder 3, a silicone sleeve 5 and a diverter.

[0062] The two sides of the cable flexible joint part 1 are provided with a cable terminal 1 201 and a cable terminal 2 202, respectively. The rubber material on the outer surface of the ends of the cable terminal 1 201 and the cable terminal 2 202 is stripped to expose a part of the internal metal conductor. The internal metal conductor of the cable terminal 1 201 and the internal metal conductor of the cable terminal 2 202 are butted and welded to form the cable flexible joint part 1. The ends of the cable terminal 1 201 and the cable terminal 2 202 close to the cable flexible joint part 1 are provided with a tapered section, respectively, and the tapered section is formed by cutting the surface rubber material of the cable terminal 1 201 and the cable terminal 2 202.

[0063] The silicone sleeve 5 is sleeved on the cable flexible joint part 1 and two ends of the silicone sleeve 5 extend to the cable end 1 201 and the cable end 202 respectively.

[0064] The flow divider is cylindrical and is sleeved on the cable terminal 1 201. The flow divider has a feed port 401 and a discharge port 402, and the discharge port 402 is connected to the feed port 401. The feed port 401 extends to one end of the silicone sleeve 5 and is inserted into the space between the end of the silicone sleeve 5 and the surface of the cable terminal 1 201. A rubber extrusion port is formed between the other end of the silicone sleeve 5 and the surface of the cable terminal 2 202.

[0065] The outer mold cylinder 3 is sleeved on the outside of the silicone sleeve 5 , and the inner surface of the outer mold cylinder 3 and the silicone sleeve 5 are spaced apart.

[0066] The outer mold barrel 3 is a metal barrel mold, and during cross-linking, the outer mold barrel 3 can be directly heated. The outer mold barrel 3 has two semi-barrel-shaped half-molds connected to form a barrel shape; the two half-molds of the outer mold barrel 3 are respectively provided with connecting ears, and the connecting ears of the two half-molds are relatively fixed by bolts.

[0067] In the present application, the outlet 402 of the flow divider is set to be annular, and the annular outlet 402 of the flow divider is sleeved on the cable end 201. During the extrusion process, the insulating material is evenly squeezed from the annular outlet 402 into the space between the cable end 201 and the silicone sleeve 5, and then can evenly enter the space between the silicone sleeve 5 and the cable flexible joint part 1, and can evenly squeeze out the gas and other impurities between the silicone sleeve 5 and the cable flexible joint part 1.

[0068] The diverter includes a cylindrical inner mold and a cylindrical outer mold. The inner mold is sleeved in the outer mold. An annular absolute raw material extrusion space is spaced between the inner mold and the outer mold. The feed port 401 and the discharge port 402 of the diverter are connected to the absolute raw material extrusion space, wherein the discharge port 402 is the end opening of the absolute raw material extrusion space.

[0069] The inner mold of the diverter includes a fan-shaped diverter inner mold 601 and a peach-shaped diverter inner mold 602 , and the outer mold of the diverter includes a fan-shaped diverter outer mold 603 and a peach-shaped diverter outer mold 604 .

[0070] In this embodiment, the fan-shaped splitter inner mold 601 and the peach-shaped splitter inner mold 602 are butted together to form a cylindrical inner mold, and the fan-shaped splitter outer mold 603 and the peach-shaped splitter outer mold 604 are butted together to form a cylindrical outer mold. After the fan-shaped splitter inner mold 601 and the peach-shaped splitter inner mold 602 are butted together, the cable end 201 is sandwiched in the middle and the cable end 201 is fixed by squeezing the cable end 201.

[0071] The middle part of the diverter inner mold formed by the fan-shaped diverter inner mold 601 and the peach-shaped diverter inner mold 602 has a cavity penetrating the diverter inner mold. The cable end 201 passes through the cavity in the middle part of the diverter inner mold and is squeezed and fixed by the fan-shaped diverter inner mold 601 and the peach-shaped diverter inner mold 602.

[0072] The end of the outer mold of the diverter has an extension end, and the extension end of the end of the outer mold of the diverter has two parts, which are respectively located at the ends of the fan-shaped diverter outer mold 603 and the peach-shaped diverter outer mold 604. After the fan-shaped diverter outer mold 603 and the peach-shaped diverter outer mold 604 are docked, the extension end of the diverter outer mold is also docked and formed.

[0073] The inner mold end of the diverter also has an extension portion that cooperates with the extension end of the outer mold of the diverter. The extension portion is inserted into the extension end of the outer mold of the diverter, and an annular discharge port 402 is formed between the end of the extension portion and the end of the extension end of the outer mold of the diverter.

[0074] The end of the diverter inner mold away from the cable flexible joint part 1 has an annular flange. When the diverter inner mold is installed inside the diverter outer mold, the flange of the diverter inner mold fits against the end of the diverter outer mold and is fixedly connected by bolts.

[0075] An annular groove 301 is constructed on the inner wall of the end of the outer mold cylinder 3 , and an annular protrusion extending into the annular groove 301 is formed on the surface of the extended end of the outer mold of the diverter.

[0076] The clamping ring 7 is installed in the annular groove 301 , and the end of the silicone sleeve 5 extends between the clamping ring 7 and the extended end of the outer mold of the diverter and is squeezed and fixed.

[0077] The end of the outer mold cylinder 3 away from the diverter is connected to the tail workpiece 2 802 and the tail workpiece 1 801. The tail workpiece 2 802 is flange-type and fixed to the end of the outer mold cylinder 3 by bolts. The tail workpiece 1 801 is cylindrical. One end of the tail workpiece 1 801 is sleeved on the end of the tail workpiece 2 802 away from the outer mold cylinder 3. The tail workpiece 2 802 and the tail workpiece 1 801 are sleeved on the cable terminal 2 202.

[0078] One end of the tail workpiece 1 801 has an annular fixing ring, and the tail workpiece 2 802 has an annular groove, and the fixing ring of the tail workpiece 1 801 is clamped in the annular groove. The end of the silicone sleeve 5 away from the diverter extends to between the cable terminal 202 and the tail workpiece 2 802 and the tail workpiece 1 801 and is squeezed and fixed.

[0079] The inner diameter of the middle section of the silicone sleeve 5 is smaller than the inner diameter of the two ends of the silicone sleeve 5, and the inner wall of the middle section of the silicone sleeve 5 is spaced apart from the surface of the cable flexible connector 1. The silicone sleeve 5 has a fitting surface that fits the conical section of the cable terminal 1 201 and the cable terminal 2 202.

[0080] The existing silicone sleeve has structural defects. Not only is it too thick, which affects cross-linking. Moreover, when the inner diameter of the silicone sleeve is too large, the two ends of the silicone sleeve cannot be tightly fixed to the cable flexible joint, and the insulating material will overflow and contact the tooling mold; the inner diameter of the silicone sleeve is the same as that of the cable, and it cannot repair the eccentricity problem of the insulating layer caused by its own weight. In order to solve this problem, the silicone sleeve 5 in the present application is set to a form in which the inner diameter of the middle section shrinks. When the silicone sleeve 5 shrinks due to heat, the middle section of the silicone sleeve 5 will be subjected to uniform axial internal stress in conjunction with the inner diameter shrinkage of the middle section of the silicone sleeve 5, thereby improving the overall density and eccentricity of the insulation recovery area.

[0081] A flexible joint single-end extrusion method, using the above-mentioned cable flexible joint single-end extrusion device to extrude and cross-link insulating materials; comprising the following steps:

[0082] 1) Install the outer mold cylinder 3, the diverter, and the silicone sleeve 5 on the cable flexible joint part 1, the cable terminal 1 201, and the cable terminal 2 202;

[0083] 2) After the temperature of the diverter is raised to about 140 degrees Celsius to reach the melting point of the insulating material, the extruder outputs a pressure of 4Mpa to squeeze the molten insulating material from one end of the silicone sleeve 5 into between the silicone sleeve 5 and the cable flexible joint 1 through the diverter at a speed of 0.2L / min. When the insulating material is squeezed out from the other end of the silicone sleeve 5, the extruder stops working immediately;

[0084] During this process, the insulating material covers the entire cable flexible joint portion 1;

[0085] 3) After the insulating material completely covers the entire cable flexible joint part 1, the outer mold cylinder 3 is heated to 180 degrees Celsius, and the insulating material undergoes a cross-linking reaction, and the cross-linking time is controlled to be about 4 hours;

[0086] 4) Finally, allow the entire device and cable flexible joint to cool naturally to room temperature.

[0087] The molten insulating material is fed into the single-end extrusion device of the present application through the feed port of the diverter. Then, the insulating material is extruded through the extrusion space between the inner and outer molds of the diverter. The insulating material will slowly cover the entire structure from one end of the cable flexible joint part 1 according to the shape of the silicone sleeve 5. The gas and impurities in the silicone sleeve 5 will be discharged during the movement of the insulating material. Then, the outer mold cylinder 3 is heated to achieve the cross-linking reaction of the insulating material.

[0088] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A single-end extrusion device for a cable flexible joint, comprising a cable flexible joint portion (1) and an outer die barrel (3), wherein the two sides of the cable flexible joint portion (1) are respectively provided with a cable end 1 (201) and a cable end 2 (202), and the outer die barrel (3) is sleeved on the cable flexible joint portion (1) and covers a portion of the cable end 1 (201) and the cable end 2 (202); the characteristics are: It also includes a silicone sleeve (5) and a diverter; The silicone sleeve (5) is sleeved on the cable flexible joint part (1), and two ends of the silicone sleeve (5) extend to the first cable end (201) and the second cable end (202) respectively; The flow divider has a feed port (401) and a discharge port (402), and the discharge port (402) is connected to the feed port (401); the feed port (401) extends to one end of the silicone sleeve (5) and is inserted into the space between the end of the silicone sleeve (5) and the surface of the cable terminal (201); A rubber extrusion outlet is formed between the other end of the silicone sleeve (5) and the surface of the second cable end (202).

2. The single-end extrusion device for cable flexible joint according to claim 1, characterized in that: The diverter is cylindrical and is sleeved on the first cable end (201); The discharge port (402) of the flow splitter is annular, and the annular discharge port (402) of the flow splitter is sleeved on the first cable end (201).

3. The single-end extrusion device for cable flexible joint according to claim 1, characterized in that: The outer mold cylinder (3) has two semi-cylindrical half molds that are butt-jointed to form a cylindrical shape; the two half molds of the outer mold cylinder (3) are respectively provided with connecting ears, and the connecting ears of the two half molds are relatively fixed by bolts.

4. The single-end extrusion device for cable flexible joint according to claim 1, characterized in that: The flow divider comprises an inner die and an outer die, wherein the inner die is arranged inside the outer die and forms a raw material extrusion space between the inner die and the outer die; The feed inlet (401) and the discharge outlet (402) of the flow divider are in communication with the raw material extrusion space; The cable end 1 (201) passes through the inner mold of the diverter and is squeezed and fixed.

5. The single-end extrusion device for cable flexible joint according to claim 4, characterized in that: The inner mold of the flow splitter includes a fan-shaped flow splitter inner mold (601) and a peach-shaped flow splitter inner mold (602), and the outer mold of the flow splitter includes a fan-shaped flow splitter outer mold (603) and a peach-shaped flow splitter outer mold (604); The fan-shaped flow splitter inner mold (601) is relatively fixedly connected to the peach-shaped flow splitter inner mold (602), and the fan-shaped flow splitter outer mold (603) is relatively fixedly connected to the peach-shaped flow splitter outer mold (604); The middle part of the diverter inner mold formed by the fan-shaped diverter inner mold (601) and the peach-shaped diverter inner mold (602) has a cavity penetrating the diverter inner mold. The cable end 1 (201) passes through the cavity in the middle part of the diverter inner mold and is squeezed and fixed by the fan-shaped diverter inner mold (601) and the peach-shaped diverter inner mold (602).

6. The single-end extrusion device for cable flexible joint according to claim 4, characterized in that: The end of the outer mold of the diverter has an extension end, and the extension end of the outer mold of the diverter extends into the end of the outer mold cylinder (3); The inner wall of the end of the outer mold cylinder (3) is formed with an annular groove (301), and the surface of the extended end has an annular protrusion extending into the annular groove (301).

7. The single-end extrusion device for cable flexible joint according to claim 6, characterized in that: It also includes a clamping ring (7); the clamping ring (7) is installed in the annular groove (301); the end of the silicone sleeve (5) extends between the clamping ring (7) and the extended end of the outer mold of the diverter and is squeezed and fixed.

8. The single-end extrusion device for cable flexible joint according to claim 1, characterized in that: One end of the outer mold cylinder (3) away from the flow divider is connected to the second machine tail workpiece (802) and the first machine tail workpiece (801); The tail workpiece 2 (802) is flange-shaped and fixed to the end of the outer mold cylinder (3) by bolts; the tail workpiece 1 (801) is cylindrical, and one end of the tail workpiece 1 (801) is sleeved on the end of the tail workpiece 2 (802) away from the outer mold cylinder (3); the tail workpiece 2 (802) and the tail workpiece 1 (801) are sleeved on the cable end 2 (202); One end of the tail workpiece 1 (801) has an annular fixing ring, and the tail workpiece 2 (802) has an annular groove, and the fixing ring of the tail workpiece 1 (801) is clamped in the annular groove; One end of the silicone sleeve (5) away from the diverter extends to between the second cable end (202) and the second tail workpiece (802) and the first tail workpiece (801) and is squeezed and fixed.

9. The single-end extrusion device for cable flexible joint according to claim 1, characterized in that: The inner diameter of the middle section of the silicone sleeve (5) is smaller than the inner diameters of the two ends of the silicone sleeve (5); The inner wall of the middle section of the silicone sleeve (5) is spaced apart from the surface of the cable flexible connector (1); The cable end head 1 (201) and the cable end head 2 (202) have a tapered section at one end close to the cable flexible joint part (1); The silicone sleeve (5) has a fitting surface that fits the conical sections of the first cable end (201) and the second cable end (202).

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