A cable jacket pre-wrap device

Abstract

The utility model discloses a longitudinal package device before cable sheath extrusion, through setting around the package component and the application component in turn along the cable movement direction, using the upper around the package tray, lower around the package tray, left around the package tray and right around the package tray in around the package component and the guide pulley to set up the tape roll, and the tape roll is installed on the guide pulley, and then the tape end is fixed on the cable, and the cable moves and drives the tape roll to rotate, thereby releasing the tape, and when passing through the outlet mould, four tapes are applied on the cable and wrap the cable, and the tape is further pressed on the cable by the shaping part when passing through the shaping mould.

Description

Technical Field

[0001] This utility model belongs to the field of cable manufacturing technology, and in particular relates to a longitudinal wrapping device before cable sheath extrusion. Background Technology

[0002] During the cable production process, non-woven fabric needs to be wrapped around the cable armor layer. The main functions of non-woven fabric in cables include insulation protection, mechanical buffering, flame retardant enhancement, and environmental adaptability optimization. The traditional wrapping method is to use a mechanical device to rotate and wrap the non-woven fabric around the cable during the cable production process, such as the cable wrapping device disclosed in Chinese Utility Model Patent No. CN208292419U. This method makes the non-woven fabric spirally wrapped around the cable. The drawback is that additional driving force is required to make the non-woven fabric roll around the cable in a circular motion, and the revolution speed of the non-woven fabric roll and the moving speed of the cable need to be controlled. Utility Model Content

[0003] (1) Technical problem to be solved: Provide a longitudinal wrapping device before extrusion of cable sheath.

[0004] (2) The technical solution adopted by this utility model is as follows:

[0005] A cable sheath extrusion pre-longitudinal wrapping device includes a wrapping assembly and a pasting assembly arranged sequentially. The wrapping assembly includes a first support, on which an upper wrapping disc, a lower wrapping disc, a left wrapping disc, and a right wrapping disc are arranged. Guide rollers are arranged in the middle of the upper wrapping disc, the lower wrapping disc, the left wrapping disc, and the right wrapping disc. The pasting assembly includes an exit die and a shaping die arranged sequentially. A first through hole is opened in the middle of the exit die. The shaping die includes a main body and a shaping part. A second through hole is opened in the middle of the main body. One side of the main body is connected to the exit die by multiple connecting ribs. The shaping part is located on the other side of the main body and is flared. The end of the shaping part with the larger inner diameter is connected to the main body. A second support is arranged at the bottom of the exit die.

[0006] A further technical solution is that the shaping part is formed by two mold segments, which are slidably connected to the main body in the radial direction, and the mold segments are connected to a locking member.

[0007] A further technical solution is that the axle of the guide wheel is rotatably connected to the upper winding disc, lower winding disc, left winding disc, or right winding disc via bearings.

[0008] A further technical solution is to provide a guide section at the other end of the exit mold. The guide section is flared, and the end with the smaller inner diameter of the guide section is connected to the exit mold. The guide section is formed by four tile-shaped guide pieces.

[0009] A further technical solution is that an annular seat is provided at the end of the first through hole near the shaping mold, and brush bristles are provided on the inner side of the annular seat.

[0010] (3) Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: By sequentially arranging the wrapping assembly and the applicating assembly along the cable movement direction, the wrapping tape roll is placed using the upper wrapping disc, lower wrapping disc, left wrapping disc, right wrapping disc, and guide wheel in the wrapping assembly. The wrapping tape roll is fitted onto the guide wheel, and the end of the wrapping tape is fixed to the cable. When the cable moves, it will drive the wrapping tape roll to rotate, thereby releasing the wrapping tape. When passing through the exit mold, the four wrapping tapes will be gathered and applicated to the cable to wrap the cable. Subsequently, when passing through the shaping mold, the shaping part will further press the wrapping tape onto the cable. This utility model uses a longitudinal wrapping method to apply non-woven fabric to the cable. The release of the wrapping tape relies on the traction of the cable and does not require additional driving force.

[0011] The main body of the shaping mold is connected to the exit mold by multiple connecting ribs, which leaves a certain distance between the shaping mold and the exit mold. This allows for observation of the cable's fit and distribution with the wrapping tape after passing through the exit mold, enabling timely adjustments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 yes Figure 1 A schematic diagram of the structure on the other side of the state shown;

[0014] Figure 3 This is a schematic diagram of the structure of the wrapping assembly described in this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the dressing assembly described in this utility model;

[0016] Figure 5 This is a cross-sectional structural diagram of the dressing assembly described in this utility model;

[0017] Figure 6 This is a schematic diagram of the connection structure between the mold petal and the main body as described in Example 2;

[0018] Figure 7 This is a schematic diagram of the installation position of the mold petal and the annular seat as described in Embodiment 3;

[0019] Figure 8 This is a schematic diagram of the connection between the dovetail groove and the dovetail tenon as described in Embodiment 2;

[0020] Figure 9 This is a schematic diagram of the annular seat described in Embodiment 3. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-9 As shown.

[0023] Example 1: A cable sheath extrusion pre-longitudinal wrapping device, comprising a wrapping assembly and a bonding assembly arranged sequentially. The wrapping assembly includes a first support 1, on which an upper wrapping disc 2, a lower wrapping disc 3, a left wrapping disc 4, and a right wrapping disc 5 are arranged. Guide wheels 6 are arranged in the middle of the upper wrapping disc 2, the lower wrapping disc 3, the left wrapping disc 4, and the right wrapping disc 5. The bonding assembly includes an exit die 7 and a shaping die arranged sequentially. A first through hole 8 is opened in the middle of the exit die 7. The shaping die includes a main body 9 and a shaping part 10. A second through hole 11 is opened in the middle of the main body 9. One side of the main body 9 is connected to the exit die 7 by multiple connecting ribs 18. The shaping part 10 is arranged on the other side of the main body 9. The shaping part 10 is flared. The end of the shaping part 10 with the larger inner diameter is connected to the main body 9. A second support 12 is arranged at the bottom of the exit die 7.

[0024] Working principle: This utility model is a standalone device that can be directly used in existing cable production lines. When in use, this device is installed before the cable extruder, that is, before the cable sheath is formed. The shaping film should be close to the extruder head. When wrapping non-woven fabric onto the cable armor layer, the cable needs to be pre-passed through the exit mold 7 and the shaping mold in the wrapping assembly. The upper wrapping reel 2, lower wrapping reel 3, left wrapping reel 4, and right wrapping reel 5 are respectively positioned at the four cardinal directions of the cable (i.e., evenly spaced around the cable circumference). The upper wrapping reel 2, lower wrapping reel 3, left wrapping reel 4, and right wrapping reel 5 in the wrapping assembly... The wrapping tape roll is placed on the guide roller 6 via a wrapping reel 3, a left-winding wrapping reel 4, a right-winding wrapping reel 5, and a guide roller 6. The wrapping tape roll is fitted onto the guide roller 6 (a pin is provided at the outer end of the guide roller 6 to prevent the wrapping tape roll from detaching). For the cable head, the end of the wrapping tape is pasted or tied to the cable. Then, the cable is threaded into the extruder. As the cable moves, it drives the wrapping tape roll to rotate, thereby releasing the wrapping tape. When passing through the exit die 7, the four wrapping tapes are gathered and pasted onto the cable to wrap it. When passing through the shaping die, the shaping part 10 further presses the wrapping tape onto the cable. The cable wrapped with non-woven fabric enters the extruder. When the four wrapping tapes are pasted onto the cable, each wrapping tape is equal to or greater than a quarter circle, which ensures that a circle is formed to wrap the cable. The first bracket 1 and the second bracket 12 are both fixed to the ground with expansion bolts. The diameter of the first through hole 8 in the middle of the exit mold 7 matches the diameter of the cable armor layer with the wrapping tape. A second through hole 11 is opened in the middle of the main body 9 of the shaping mold to match the first through hole 8. The inner diameter of the smaller end of the shaping part 10 is slightly smaller than the diameter of the first through hole 8. The non-woven fabric can be adhesive or non-adhesive (because the shaping film is close to the extruder head, after the wrapping tape is pressed onto the cable using the application component, it immediately enters the extruder; therefore, the non-woven fabric can be adhesive or non-adhesive). This invention uses a longitudinal wrapping method to apply the non-woven fabric to the cable. The release of the wrapping tape relies on the cable's traction, requiring no additional driving force, resulting in relatively low cost.

[0025] The axle of the guide wheel 6 is rotatably connected to the upper winding disc 2, the lower winding disc 3, the left winding disc 4, or the right winding disc 5 via bearings.

[0026] The other end of the exit mold 7 is provided with a guide part, which is flared in shape. The end of the guide part with a smaller inner diameter is connected to the exit mold 7. The guide part is formed by four tile-shaped guide pieces 15, which can guide the wrapping tape and make the wrapping tape gradually approach the cable, which is conducive to the smoothness of the wrapping tape.

[0027] Example 2: Based on Example 1, the shaping part 10 is formed by two mold pieces 13. The mold pieces 13 are slidably connected to the main body 9 in the radial direction, and the mold pieces 13 are connected to the locking member 14. The main body 9 has a dovetail groove 21. The mold pieces 13 are provided with dovetail tenons 20 that are connected to the dovetail groove 21. The dovetail tenons 20 are located in the dovetail groove 21. The locking member 14 is a set screw threaded on the mold piece 13. The set screw can press against the main body 9 and the pressing force can be adjusted.

[0028] Example 3: Based on Example 1 or 2, an annular seat 16 is provided at one end of the first through hole 8 near the shaping mold. Brush bristles 17 (made of nylon, polypropylene, etc.) are provided on the inner side of the annular seat 16. The annular seat 16 is connected to the shaping mold by bolts. The annular seat 16 is formed by splicing two semicircles. The inner side of the annular seat 16 has brush bristle 17 mounting holes. The brush bristles 17 are adhered in the brush bristle 17 mounting holes. In this case, the diameter of the first through hole 8 in the middle of the exit mold 7 does not need to match the diameter of the cable armor layer with the wrapping tape. The diameter of the first through hole 8 is relatively large. The brush bristles 17 can press the wrapping tape tightly onto the cable. The brush bristles 17 have good adaptability and there is no need to replace the exit mold 7 with different specifications.

[0029] The above are merely preferred embodiments of this utility model.

Claims

1. A longitudinal wrapping device before cable sheath extrusion, characterized in that, The wrapping assembly and the applicator assembly are arranged in sequence. The wrapping assembly includes a first support (1). The first support (1) is provided with an upper wrapping disc (2), a lower wrapping disc (3), a left wrapping disc (4) and a right wrapping disc (5). Guide wheels (6) are provided in the middle of the upper wrapping disc (2), the lower wrapping disc (3), the left wrapping disc (4) and the right wrapping disc (5). The applicator assembly includes an exit mold (7) and a shaping mold arranged in sequence. The exit mold (7) has a first through hole (8) in the middle. The shaping mold includes a main body (9) and a shaping part (10). The main body (9) has a second through hole (11) in the middle. One side of the main body (9) is connected to the exit mold (7). The shaping part (10) is located on the other side of the main body (9). The shaping part (10) is flared. The end of the shaping part (10) with the larger inner diameter is connected to the main body (9). A second support (12) is provided at the bottom of the exit mold (7).

2. The cable sheath extrusion pre-longitudinal wrapping device according to claim 1, characterized in that, The shaping part (10) is formed by two mold segments (13), which are slidably connected to the main body (9) in the radial direction, and the mold segments (13) are connected to the locking member (14).

3. The cable sheath extrusion pre-longitudinal wrapping device according to claim 1, characterized in that, The guide wheel (6) is rotatably connected to the upper winding disc (2), lower winding disc (3), left winding disc (4) or right winding disc (5) via bearings.

4. The cable sheath extrusion pre-longitudinal wrapping device according to claim 1, characterized in that, The other end of the exit mold (7) is provided with a guide part, which is flared. The end of the guide part with a smaller inner diameter is connected to the exit mold (7). The guide part is formed by four tile-shaped guide pieces (15).

5. The cable sheath extrusion pre-longitudinal wrapping device according to claim 1, characterized in that, An annular seat (16) is provided at one end of the first through hole (8) near the molding die, and brush bristles (17) are provided on the inner side of the annular seat (16).

6. The cable sheath extrusion pre-longitudinal wrapping device according to claim 1, characterized in that, The main body (9) is connected to the exit mold (7) by multiple connecting ribs (18) on one side.

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