Cable sheath processing equipment

Abstract

The utility model discloses cable sheath processing equipment, relates to the technical field of power cable processing, and aims to solve the problems that when a polyethylene inner sheath and a flame-retardant polyolefin inner sheath are bonded by adopting a longitudinal wrapping aluminum-plastic composite belt to serve as a waterproof isolation sleeve in the prior art, the aluminum-plastic composite belt is composed of an aluminum base belt and a thin film attached to the surface of the aluminum base belt; the problems that the aluminum-plastic composite belt and the cable are fed at the same time, the aluminum-plastic composite belt is hot-pressed on the outer side of the cable through a mold, the cable has a certain curvature and is prone to skewing during wiring, and the production quality is affected are solved. The cable sheath material comprises a longitudinally-wrapped aluminum-plastic composite belt bonded flame-retardant polyethylene and a flame-retardant polyolefin inner sheath, a workbench is fixedly installed above the working bin, a curling table and a mold forming table are arranged on the workbench, a longitudinally-wrapped horn mold is arranged on the curling table, one end of an iron sheet is expanded, and the other end of the iron sheet is expanded. The other end of the die forming table is deformed into a similar tubular structure from a flat plate shape; and a wire stabilizing die and a sizing die are respectively arranged on the die forming table.

Description

Technical Field

[0001] This utility model relates to the field of power cable processing technology, specifically to a cable sheath processing equipment. Background Technology

[0002] With the rapid development of my country's economy, power cables have evolved from simple power transmission to multi-functional and multi-purpose cables. Depending on their application, power cables have been given new properties such as flame retardancy, fire resistance, and halogen-free low-smoke properties. Previously, water resistance requirements for cables were mainly limited to submarine cables, ultra-high voltage cables, and communication cables. However, with deeper research and understanding of insulation water absorption and water treeing, the importance of waterproof performance in power cables has become increasingly recognized. Medium-voltage power cables are mostly laid underground. In areas with high groundwater levels or frequent rainfall, more and more users are demanding waterproof performance from medium-voltage power cables.

[0003] However, when using longitudinally wrapped aluminum-plastic composite tape bonded to a polyethylene inner sheath and a flame-retardant polyolefin inner sheath as a waterproof isolation sleeve, the aluminum-plastic composite tape is composed of an aluminum base tape and a thin film attached to its surface. The aluminum-plastic composite tape and the cable are brought in simultaneously. The aluminum-plastic composite tape is heat-applied to the outside of the cable using a mold. The cable has a certain curvature, and it is easy for the cable to be routed crookedly during routing, affecting production quality. Therefore, the market urgently needs to develop a cable sheath processing equipment to help people solve the existing problems. Utility Model Content

[0004] The purpose of this utility model is to provide a cable sheath processing equipment to solve the problem mentioned in the background art that when using longitudinally wrapped aluminum-plastic composite tape to bond polyethylene inner sheath and flame-retardant polyolefin inner sheath as a waterproof isolation sleeve, the aluminum-plastic composite tape is composed of aluminum base tape and a film attached to its surface. The aluminum-plastic composite tape and the cable are fed in at the same time. The aluminum-plastic composite tape is heat-applied to the outside of the cable using a mold. The cable has a certain curvature and is easy to be crooked during the cable routing, which affects the production quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cable sheath processing equipment, comprising a working chamber, characterized in that: a workbench is fixedly installed above the working chamber, a cable feeding mechanism is provided on the workbench, the cable feeding mechanism includes a cable feeder and a strip stabilizer, a transition table is provided on the workbench, the cable feeder includes a first bracket, a first longitudinal clamping roller and a second longitudinal clamping roller are rotatably connected to the first bracket respectively, the strip stabilizer includes a connecting frame, two connecting frames are provided, a first transverse clamping roller and a second transverse clamping roller are rotatably connected between the two connecting frames respectively, a coiling table and a forming table are respectively provided on the workbench, a longitudinally wrapped horn mold is provided on the coiling table, the longitudinally wrapped horn mold is unfolded from one end of the sheet metal, and the other end is deformed from a flat plate into a structure similar to a tube.

[0006] The above technical solution utilizes the first and second longitudinal clamping rollers to provide stable guidance for the cable, and the first and second transverse clamping rollers to ensure that the strip enters the longitudinal wrapping horn mold smoothly. The two sets of clamping rollers clamp the cable and aluminum-plastic composite strip flat and guide them to the same axis, thereby ensuring that the cable and aluminum-plastic composite strip enter the line at the same time, preventing the line from bending, and improving production quality.

[0007] In a preferred embodiment, this utility model can be further configured as follows: a stabilizing mold and a sizing mold are respectively provided on the forming table; a longitudinal horn mold outlet end is provided with a longitudinal horn positioner; the longitudinal horn positioner includes a fixing frame; and four second adjusting bolts are threadedly connected to the outer side of the fixing frame.

[0008] In a preferred embodiment, the present invention can be further configured such that: a first hot air blower bracket is provided between the longitudinal horn positioner and the stabilizing die, and a second hot air blower bracket is provided between the stabilizing die and the sizing die, wherein both the first hot air blower bracket and the second hot air blower bracket are used to fix the hot air blower.

[0009] The above technical solution involves wrapping the aluminum-plastic composite tape around the outside of the cable using a heat-applying method, with the heating temperature reaching over 70°C.

[0010] In a preferred embodiment, the present invention can be further configured as follows: a wire stabilizer is provided at the mold inlet of the longitudinally packaged horn mold, the wire stabilizer includes a second bracket, a wheel frame is slidably connected to the inner side of the second bracket, a pressure wheel is rotatably connected to the lower part of the wheel frame, and a first adjusting bolt is threadedly connected to the second bracket, the bottom end of the first adjusting bolt being rotatably connected to the wheel frame.

[0011] The above technical solution utilizes a cable stabilizer to ensure that the cable and tape are on the same axis as the longitudinal wrapping horn die, enabling stable cable transmission and guaranteeing the quality of the longitudinal wrapping.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model utilizes a first longitudinal clamping roller and a second longitudinal clamping roller to provide stable guidance for the cable, and a first transverse clamping roller and a second transverse clamping roller to ensure that the strip enters the longitudinal wrapping horn mold flat. By using two sets of clamping rollers to clamp the cable and aluminum-plastic composite strip flat and guide them to the same axis, it can ensure that the cable and aluminum-plastic composite strip enter the line at the same time, prevent the line from bending, and improve production quality.

[0014] 2. This utility model first involves the aluminum-plastic composite tape undergoing initial deformation via a longitudinal wrapping horn mold, transforming it from a flat plate into a tubular structure. Further deformation occurs via a stabilizing mold, bringing the diameter of the tubular structure close to the design value. A sizing mold ensures the diameter of the aluminum-plastic composite tape's shielding layer reaches the design requirements, and the tape is continuously wrapped around the cable core. Together, they pass through an extruder die to extrude an outer sheath. After forced cooling and shaping, the production of the cable's comprehensive sheath is complete. To address the severe edge curling and diameter springback issues that occur during the longitudinal wrapping of the aluminum-plastic composite tape, appropriate forming control technology must be adopted in the longitudinal wrapping process. This longitudinal wrapping forming control technology refers to the process of transforming the aluminum-plastic composite tape into a tubular shape during longitudinal wrapping. After the structure is formed, the film covering the middle part of the two overlapping longitudinal edges softens (around 70℃) and becomes sticky, thus firmly bonding them together, finally completing the longitudinal wrapping. Thermal control is used to control the process. The thermal control technology for longitudinal wrapping of aluminum-plastic composite strips utilizes the structural characteristics of the film covering the aluminum base strip. During its deformation process, hot air or flame is used to heat the overlapping part of the two edges until the middle film softens and becomes sticky, bonding the two longitudinal edges together. After cooling, the two overlapping longitudinal edges are firmly bonded and fixed, forming a stable tubular structure. The height and diameter rebound of the rolled edge of the formed aluminum-plastic composite strip longitudinal wrapping tube will be reduced. Attached Figure Description

[0015] Figure 1 This is a front view of a cable sheath processing equipment according to the present invention;

[0016] Figure 2 This is a top view of the longitudinally wrapped horn mold of this utility model;

[0017] Figure 3 This is a front view of the cable inlet device of this utility model;

[0018] Figure 4 This is a front view of the strip stabilizer of this utility model;

[0019] Figure 5 This is a front view of the line stabilizer of this utility model;

[0020] Figure 6 This is a front view of the longitudinally wrapped horn positioner of this utility model.

[0021] In the diagram: 1. Working chamber; 2. Workbench; 3. Cable feeder; 4. Strip stabilizer; 5. Transition table; 6. Winding table; 7. Wire stabilizer; 8. Longitudinal wrapping horn mold; 9. Longitudinal wrapping horn positioner; 10. Forming table; 11. First hot air blower bracket; 12. Wire stabilizing mold; 13. Second hot air blower bracket; 14. Sizing mold; 15. First bracket; 16. First longitudinal clamping roller; 17. Second longitudinal clamping roller; 18. Connecting frame; 19. First transverse clamping roller; 20. Second transverse clamping roller; 21. Second bracket; 22. First adjusting bolt; 23. Wheel frame; 24. Wire pressing roller; 25. Fixing frame; 26. Second adjusting bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Please see Figure 1 , Figure 2 and Figure 6This utility model provides an embodiment of a cable sheath processing device, comprising cable sheath material and a working chamber 1. The cable sheath material includes a longitudinally wrapped aluminum-plastic composite tape bonded with flame-retardant polyethylene and a flame-retardant polyolefin inner sheath. A workbench 2 is fixedly installed above the working chamber 1. A coiling table 6 and a forming table 10 are respectively arranged on the workbench 2. A longitudinally wrapped horn mold 8 is arranged on the coiling table 6. The longitudinally wrapped horn mold 8 is unfolded from one end of the sheet metal, and the other end is deformed from a flat plate into a tubular structure. A wire stabilizer is respectively arranged on the forming table 10. The mold 12 and the sizing mold 14 are provided. The exit end of the longitudinal horn mold 8 is provided with a longitudinal horn positioner 9. The longitudinal horn positioner 9 includes a fixing frame 25. The outer side of the fixing frame 25 is threaded with a second adjusting bolt 26. There are four second adjusting bolts 26. A first hot air blower bracket 11 is provided between the longitudinal horn positioner 9 and the stabilizing mold 12. A second hot air blower bracket 13 is provided between the stabilizing mold 12 and the sizing mold 14. Both the first hot air blower bracket 11 and the second hot air blower bracket 13 are used to fix the hot air blower.

[0026] Please see Figure 1 The outlet diameter of the longitudinal horn mold 8 is equal to the cable core diameter plus (1.8~2.3) mm, the outlet diameter of the stabilizing mold 12 is equal to the cable core diameter plus (1.6~1.7) mm, and the outlet diameter of the sizing mold 14 is equal to the cable core diameter plus (1.3~1.5) mm.

[0027] Please see Figure 1 The workbench 2 is equipped with a cable feeding mechanism, which includes a cable feeder 3 and a strip stabilizer 4. The workbench 2 is also equipped with a transition table 5.

[0028] Please see Figure 3 The cable feeder 3 includes a first bracket 15, on which a first longitudinal clamping roller 16 and a second longitudinal clamping roller 17 are rotatably connected. The positions of the first longitudinal clamping roller 16 and the second longitudinal clamping roller 17 are adjustable and fixed with nuts.

[0029] Please see Figure 4 The strip stabilizer 4 includes a connecting frame 18, and there are two connecting frames 18. A first transverse clamping roller 19 and a second transverse clamping roller 20 are rotatably connected between the two connecting frames 18. The positions of the first transverse clamping roller 19 and the second transverse clamping roller 20 are adjustable and fixed with nuts.

[0030] Please see Figure 1 A line stabilizer 7 is provided at the inlet of the longitudinal horn mold 8.

[0031] Please see Figure 4The line stabilizer 7 includes a second bracket 21, a wheel frame 23 is slidably connected to the inner side of the second bracket 21, a pressure wheel 24 is rotatably connected to the lower part of the wheel frame 23, and a first adjusting bolt 22 is threadedly connected to the second bracket 21. The bottom end of the first adjusting bolt 22 is rotatably connected to the wheel frame 23.

[0032] Working principle: During use, the cable and aluminum-plastic composite tape enter the processing equipment from the infeed mechanism. The cable is clamped by the first longitudinal clamping roller 16 and the second longitudinal clamping roller 17, and the aluminum-plastic composite tape is clamped by the first transverse clamping roller 19 and the second transverse clamping roller 20, thereby ensuring that the cable and aluminum-plastic composite tape enter stably and without bending. The aluminum-plastic composite tape is wrapped around the outside of the cable by the longitudinal wrapping horn mold 8. Then, the aluminum-plastic composite tape is heated by the hot air blower installed on the first bracket 15, and the aluminum-plastic composite tape is heat-applied to the surface of the cable. The cable wrapped with the aluminum-plastic composite tape enters the inside of the stabilizing mold 12, and then enters the inside of the sizing mold 14 after being heated again. Finally, it is sent to the extruder to extrude the cable wrapped with the aluminum-plastic composite tape, completing the processing and production of the cable sheath.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cable sheath processing apparatus comprising a work chamber (1), characterised in that: The work bin (1) is fixedly installed above the workbench (2), the workbench (2) is provided with a wire feeding mechanism, the wire feeding mechanism comprises a cable feeder (3) and a belt stabilizer (4), the workbench (2) is provided with an excess table (5), the cable feeder (3) comprises a first support (15), the first support (15) is rotatably connected with a first longitudinal clamping roller (16) and a second longitudinal clamping roller (17) respectively, the belt stabilizer (4) comprises a connecting frame (18), the connecting frame (18) is provided with two, two connecting frames (18) are rotatably connected with a first transverse clamping roller (19) and a second transverse clamping roller (20) respectively.

2. A cable jacket processing apparatus according to claim 1, wherein: The workbench (2) is provided with a crimping table (6) and a molding table (10) respectively, the crimping table (6) is provided with a longitudinal package horn die (8), the longitudinal package horn die (8) is unfolded at one end of the iron sheet, and the other end is deformed into a tubular structure similar to a flat plate.

3. A cable jacket processing apparatus as defined in claim 2, wherein: The molding table (10) is provided with a wire stabilizing die (12) and a sizing die (14) respectively, the outlet end of the longitudinal package horn die (8) is provided with a longitudinal package horn positioner (9), the longitudinal package horn positioner (9) comprises a fixed frame (25), the outer side of the fixed frame (25) is screw connected with a second adjusting bolt (26), the second adjusting bolt (26) is provided with four.

4. A cable jacket processing apparatus as defined in claim 3, wherein: The first hot air blower bracket (11) is arranged between the longitudinal package horn positioner (9) and the wire stabilizing die (12), the second hot air blower bracket (13) is arranged between the wire stabilizing die (12) and the sizing die (14), and the first hot air blower bracket (11) and the second hot air blower bracket (13) are used for fixing the hot air blower.

5. A cable jacket processing apparatus as defined in claim 4, wherein: The inlet of the longitudinal package horn die (8) is provided with a wire stabilizer (7).

6. A cable jacket processing apparatus as defined in claim 5, wherein: The wire stabilizer (7) comprises a second support (21), the inner side of the second support (21) is slidably connected with a wheel frame (23), the lower side of the wheel frame (23) is rotatably connected with a wire pressing wheel (24), the second support (21) is screw connected with a first adjusting bolt (22), and the bottom end of the first adjusting bolt (22) is rotatably connected with the wheel frame (23).

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