Extrusion molding device for armored cable sheath

Abstract

The utility model relates to an armored cable sheath extrusion molding device which comprises an L-shaped rack, an extruder arranged on the upper portion of the inner wall of a vertical plate of the rack, a forming die and a cooling water tank, the forming die and the cooling water tank are arranged on the top of a horizontal plate of the rack, a discharging port of the extruder is connected with the forming die, and a pre-cooling tank is arranged between the opposite faces of the forming die and the cooling water tank. An air cooling mechanism is arranged in the pre-cooling box, a preheating box is arranged on the side, away from the pre-cooling box, of the forming mold, a preheating mechanism is arranged in the preheating box, an annular rotating sleeve is rotationally connected to the side, away from the forming mold, of the preheating box, a rotating mechanism for driving the rotating sleeve to rotate is arranged at the top of the preheating box, and a three-jaw chuck is concentrically installed on the side, away from the preheating box, of the rotating sleeve. Cleaning brushes are installed at the inner ends of clamping jaws of the three-jaw chuck, and an air drying ring linked with the air cooling mechanism is arranged on the side, away from the pre-cooling box, of the cooling water tank. The device is good in cooling, air-drying and cleaning effects and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to an armored cable sheath extrusion device. Background Art

[0002] The cable sheath extrusion device is a device specially used to manufacture the outer protective sheath of cables. Its main function is to melt thermoplastic plastics such as polyethylene (PE), polyvinyl chloride (PVC) or rubber materials by heating, and then extrude them under a certain pressure and wrap them around the conductor or insulation layer of the cable to form a strong and durable protective shell. The cooling mechanism commonly used in the extrusion device is a cooling water tank. When in use, the hot cable that has just been extruded is directly immersed in a cooling water tank filled with flowing cold water. In order to ensure that the cable can fully contact the cooling water, the cooling water tank is usually designed to be deep and long enough. The cable needs to be bent when entering, which can easily cause deformation problems of the newly formed cable. The cable core needs to be cleaned before the sheath is extruded. The cleaning devices commonly used at present are mostly set according to the diameter of the cable core and cannot be adjusted at will, which has low flexibility in use. The sheath is directly discharged from the water tank after cooling, and the surface moisture needs to be dried, which is easy to be contaminated by dust. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides an armored cable sheath extrusion device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an armored cable sheath extrusion device, comprising an L-shaped frame, an extruder arranged on the upper inner wall of the vertical plate of the frame, a forming mold and a cooling water tank arranged on the top of the horizontal plate of the frame, the discharge port of the extruder is connected to the forming mold, a pre-cooling box is provided between the opposite surfaces of the forming mold and the cooling water tank, an air cooling mechanism is provided in the pre-cooling box, a preheating box is provided on the side of the forming mold away from the pre-cooling box, a preheating mechanism is provided in the preheating box, a circular rotating sleeve is rotatably connected to the side of the preheating box away from the forming mold, a rotating mechanism for driving the rotating sleeve to rotate is provided on the top of the preheating box, a three-jaw chuck is concentrically installed on the side of the rotating sleeve away from the preheating box, a cleaning brush is installed on the inner end of the clamping jaw of the three-jaw chuck, an air-drying ring linked to the air-cooling mechanism is provided on the side of the cooling water tank away from the pre-cooling box, and the cable is pulled by the traction device and passes through the three-jaw chuck, preheating box, forming mold, pre-cooling box, cooling water tank and air-drying ring in sequence.

[0005] In particular, the air cooling mechanism includes a pre-cooling cavity arranged in the pre-cooling box, a plurality of first air outlets are provided on the top of the pre-cooling cavity, an air inlet hood connected to the first air outlet is provided on the top of the pre-cooling box, an air exhaust port connected to the pre-cooling cavity is provided on the outside of the pre-cooling box, an air inlet pipe connected to the air inlet hood is provided on the cooling water tank and the top of the pre-cooling box, and first openings connected to the forming mold and the cooling water tank are respectively provided on both sides of the pre-cooling cavity.

[0006] In particular, a circular air duct is provided inside the air drying ring, a plurality of second air outlets connected to the air duct are evenly distributed radially on the inner wall of the air drying ring, and an air inlet branch pipe connected to the air duct is provided at the bottom of the air inlet pipe.

[0007] In particular, the preheating mechanism includes a preheating chamber arranged in the preheating box, an electric heating tube is provided inside the inner wall of the preheating chamber, and second openings communicating with the forming mold and the rotating sleeve are respectively provided on both sides of the preheating chamber.

[0008] In particular, the rotating mechanism includes a motor arranged on the top of the preheating box, a first gear is provided on the outer circumferential wall of the rotating sleeve, and a second gear meshing with the first gear is provided on the main shaft of the motor.

[0009] The beneficial effects of the utility model are as follows: the utility model provides a preheating box and a preheating mechanism, thereby facilitating preheating of the cable core before extruding the sheath, thereby improving adhesion performance; the provision of a rotating sleeve, a rotating mechanism, a three-jaw chuck, and a cleaning brush facilitates surface cleaning of cable cores of different diameters, and has high flexibility in use; the provision of a precooling box, an air cooling mechanism, and an air drying ring facilitates precooling of the molded sheath, allowing the surface of the sheath to solidify slightly to form a harder outer skin, which helps to reduce deformation problems that may be caused when the sheath directly enters cold water, and the combination of air cooling and water cooling helps to improve the cooling efficiency of the sheath, and the provision of the air drying ring facilitates rapid drying of residual moisture on the outer surface of the sheath to avoid dust contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Fig. 1 It is a structural diagram of the utility model;

[0011] Fig. 2 This is a schematic diagram of the air-drying ring structure of the utility model;

[0012] Fig. 3 This is a schematic diagram of the connection between the three-jaw chuck and the cleaning brush of the utility model;

[0013] In the figure: 1-frame; 2-extruder; 3-molding die; 4-cooling water tank; 5-precooling box; 6-preheating box; 7-rotating sleeve; 8-three-jaw chuck; 9-cleaning brush; 10-air drying ring; 11-precooling chamber; 12-first air outlet; 13-air inlet cover; 14-exhaust outlet; 15-air inlet pipe; 16-air guide pipe; 17-second air outlet; 18-air inlet branch pipe; 19-preheating chamber; 20-electric heating tube; 21-motor; 22-first gear; 23-second gear;

[0014] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] like Figs. 1-3 As shown, an armored cable sheath extrusion device comprises an L-shaped frame 1, an extruder 2 arranged on the upper inner wall of the vertical plate of the frame 1, a forming mold 3 and a cooling water tank 4 arranged on the top of the horizontal plate of the frame 1, the discharge port of the extruder 2 is connected to the forming mold 3, and a pre-cooling box 5 is provided between the opposite surfaces of the forming mold 3 and the cooling water tank 4. The pre-cooling box 5 is provided with an air cooling mechanism, and the air cooling mechanism comprises a pre-cooling chamber 11 arranged in the pre-cooling chamber 5, a plurality of first air outlets 12 are provided at the top of the pre-cooling chamber 11, an air inlet hood 13 connected with the first air outlet 12 is provided at the top of the pre-cooling box 5, an exhaust port 14 connected with the pre-cooling chamber 11 is provided on the outside of the pre-cooling box 5, an air inlet pipe 15 connected with the air inlet hood 13 is provided on the top of the cooling water tank 4 and the pre-cooling box 5, and first openings connected with the forming mold 3 and the cooling water tank 4 are respectively provided on both sides of the pre-cooling chamber 11; in order to prevent dust from affecting the sheath molding quality, dust filters can be provided in the first air outlet 12 and the exhaust port 14.

[0017] A preheating box 6 is provided on the side of the forming mold 3 facing away from the precooling box 5, and a preheating mechanism is provided in the preheating box 6. The preheating mechanism includes a preheating chamber 19 arranged in the preheating box 6, and an electric heating tube 20 is provided inside the inner wall of the preheating chamber 19. Second openings communicating with the forming mold 3 and the rotating sleeve 7 are respectively provided on both sides of the preheating chamber 19.

[0018] The preheating box 6 is rotatably connected to a ring-shaped rotating sleeve 7 on the side facing away from the forming mold 3. A rotating mechanism for driving the rotating sleeve 7 to rotate is provided on the top of the preheating box 6. The rotating mechanism includes a motor 21 arranged on the top of the preheating box 6, a first gear 22 is provided on the outer wall of the rotating sleeve 7, and a second gear 23 meshing with the first gear 22 is provided on the main shaft of the motor 21.

[0019] A three-jaw chuck 8 is concentrically mounted on the side of the rotating sleeve 7 facing away from the preheating box 6, a cleaning brush 9 is mounted on the inner end of the jaws of the three-jaw chuck 8, and an air-drying ring 10 is provided on the side of the cooling water tank 4 facing away from the pre-cooling box 5, which is linked to the air-cooling mechanism. A circular air duct 16 is provided inside the air-drying ring 10, and a plurality of second air outlets 17 connected to the air duct 16 are radially distributed on the inner wall of the air-drying ring 10. An air inlet branch 18 connected to the air duct 16 is provided at the bottom of the air inlet pipe 15. After being pulled by the traction device, the cable passes through the three-jaw chuck 8, the preheating box 6, the forming mold 3, the pre-cooling box 5, the cooling water tank 4, and the air-drying ring 10 in sequence.

[0020] When the utility model is working, the extruded material enters through the feed port of the extruder 2, and enters the forming mold 3 through the discharge port of the extruder 2 after melting. At this time, the handwheel on the three-jaw chuck 8 is adjusted according to the cable core diameter so that the cleaning brush 9 on the clamping jaw contacts the cable core. When the cable core is pulled and moved under the action of the traction device, the three-jaw chuck 8 rotates under the action of the motor 21, and the cleaning brush 9 cleans the dust and other impurities on the surface of the cable core. After cleaning, it enters the preheating chamber 19 for preheating, and then enters the forming mold 3, contacts with the molten material for molding, and then enters the pre-cooling chamber 11. At this time, the air inlet pipe 15 blows cold air into the wind collecting hood 13, and then blows it to the forming sheath through the first air outlet 12, and then is discharged through the exhaust port 14. After the surface of the sheath is cooled and slightly solidified, it enters the cooling water tank 4 for immersion cooling, and then enters the air drying ring 10 and is dried by the wind blown out by the second air outlet 17.

[0021] The utility model is convenient for preheating the cable core before extruding the sheath, which can improve the adhesion performance; it is convenient for cleaning the surface of cable cores with different diameters and has a wide range of applications; it is convenient for precooling the molded sheath, allowing the surface of the sheath to solidify slightly to form a harder outer skin, which helps to reduce the deformation problem that may be caused when it directly enters cold water. The combination of air cooling and water cooling helps to improve the cooling efficiency of the sheath. The provision of the air drying ring 10 facilitates the rapid drying of residual moisture on the outer surface of the sheath to avoid dust contamination.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An armored cable sheath extrusion device, comprising an L-shaped frame (1), an extruder (2) arranged on the upper inner wall of the vertical plate of the frame (1), a forming die (3) and a cooling water tank (4) arranged on the top of the horizontal plate of the frame (1), wherein the discharge port of the extruder (2) is connected to the forming die (3), and is characterized in that: A precooling box (5) is provided between the opposite surfaces of the forming mold (3) and the cooling water tank (4), and an air cooling mechanism is provided in the precooling box (5). A preheating box (6) is provided on the side of the forming mold (3) away from the precooling box (5), and a preheating mechanism is provided in the preheating box (6). A circular rotating sleeve (7) is rotatably connected to the side of the preheating box (6) away from the forming mold (3), and a rotating mechanism for driving the rotating sleeve (7) to rotate is provided on the top of the preheating box (6). A three-jaw chuck (8) is concentrically installed on the side of the rotating sleeve (7) away from the preheating box (6), and a cleaning brush (9) is installed at the inner end of the clamping jaw of the three-jaw chuck (8). An air drying ring (10) linked to the air cooling mechanism is provided on the side of the cooling water tank (4) away from the precooling box (5). After being pulled by a pulling device, the cable passes through the three-jaw chuck (8), the preheating box (6), the forming mold (3), the precooling box (5), the cooling water tank (4), and the air drying ring (10) in sequence.

2. The armored cable sheath extrusion device according to claim 1, characterized in that: The air cooling mechanism comprises a precooling chamber (11) arranged in a precooling box (5), a plurality of first air outlets (12) are provided on the top of the precooling chamber (11), an air inlet hood (13) connected to the first air outlets (12) is provided on the top of the precooling box (5), an air outlet (14) connected to the precooling chamber (11) is provided on the outside of the precooling box (5), an air inlet pipe (15) connected to the air inlet hood (13) is provided on the top of the cooling water tank (4) and the precooling box (5), and first openings connected to the forming mold (3) and the cooling water tank (4) are respectively provided on both sides of the precooling chamber (11).

3. The armored cable sheath extrusion device according to claim 2, characterized in that: A circular air guide pipe (16) is provided inside the air drying ring (10), a plurality of second air outlets (17) connected to the air guide pipe (16) are evenly distributed radially around the inner wall of the air drying ring (10), and an air inlet branch pipe (18) connected to the air guide pipe (16) is provided at the bottom of the air inlet pipe (15).

4. The armored cable sheath extrusion device according to claim 1, characterized in that: The preheating mechanism comprises a preheating chamber (19) arranged in a preheating box (6), an electric heating pipe (20) is arranged inside the inner wall of the preheating chamber (19), and second openings communicating with the forming mold (3) and the rotating sleeve (7) are respectively provided on both sides of the preheating chamber (19).

5. The armored cable sheath extrusion device according to claim 1, characterized in that: The rotating mechanism comprises a motor (21) arranged on the top of the preheating box (6), a first gear (22) is provided on the circumferential outer wall of the rotating sleeve (7), and a second gear (23) meshing with the first gear (22) is provided on the main shaft of the motor (21).

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