Extrusion equipment for producing oxygen-isolating polyethylene cable material

Abstract

The utility model relates to the technical field of cable production and processing, in particular to extrusion equipment for producing an oxygen-isolating polyethylene cable material, which comprises an oxygen-isolating polyethylene extrusion container, a mounting disc is screwed and mounted at the front end of the oxygen-isolating polyethylene extrusion container, and a cable flame-retardant layer wrapping component is arranged on the mounting disc; the cable flame-retardant layer wrapping assembly comprises an injection molding cavity, a wire inlet cylinder is fixedly installed on the upper side of the injection molding cavity, a wire outlet cylinder is arranged on the right side of the injection molding cavity, a wire guide ring is arranged in the center of the inner side of the wire outlet cylinder, and three round rods are fixedly connected between the wire guide ring and the wire outlet cylinder. According to the utility model, through the arrangement of the cable flame-retardant layer wrapping assembly, under the guiding effect of the wire guide ring, a metal copper wire is located at the central position of the wire outlet cylinder when passing through the wire outlet cylinder, so that the wrapping thickness of oxygen-isolating polyethylene on the outer side of the circumference is uniform; the oxygen-isolating polyethylene is further heated, so that the combination degree of the oxygen-isolating polyethylene and the metal copper wire is promoted.

Description

Technical Field

[0001] This utility model relates to the field of cable production and processing technology, and in particular to an extrusion equipment for producing oxygen-barrier polyethylene cable material. Background Technology

[0002] Oxygen-barrier polyethylene cables typically consist of an insulated conductor, an insulation layer, an oxygen barrier layer, and an outer sheath. The oxygen barrier layer is the key component; it lies between the insulated conductor and the outer sheath. When the cable is exposed to an open flame, this layer releases a large amount of water of crystallization to lower the flame temperature. After dehydration, it forms a non-melting and non-flammable Al₂O₃ hard shell, thus blocking the oxygen supply and achieving self-extinguishing.

[0003] The utility model patent with authorization announcement number CN218171329U discloses a high-efficiency extrusion equipment for producing polyethylene cable materials, belonging to the field of cable material production technology. The high-efficiency extrusion equipment for producing polyethylene cable materials includes a box body, a vertically placed pusher plate inside the box body, a gear on the left side of the pusher plate, a rotating shaft fixedly connected in the middle of the gear, a motor fixedly connected to the right end of the box body, the rear end of the rotating shaft passing through the box body and fixedly connected to the output end of the motor, a guide plate fixedly connected to the left side inside the box body, a toothed plate slidably connected to the upper end of the guide plate, and the toothed plate meshing with the gear, a force-applying plate fixedly connected to the right end of the toothed plate, and several evenly distributed mounting holes opened on the right end of the box body, with a discharge forming tube fixedly connected in the mounting holes.

[0004] In the aforementioned patent, the thickness of the cable wrapping layer cannot be guaranteed to be uniform during the extrusion process. The cable is prone to misalignment at the extrusion port, which in turn causes the cable to be in an off-center position inside the wrapping layer, significantly impacting the cable production quality. To address the shortcomings of the above-mentioned technology, we propose an extrusion equipment for producing oxygen-barrier polyethylene cable material. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an extrusion device for producing oxygen-barrier polyethylene cable material.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An extrusion device for producing oxygen-barrier polyethylene cable material includes an oxygen-barrier polyethylene extrusion cylinder. An mounting plate is screwed to the front end of the extrusion cylinder, and a cable flame-retardant layer wrapping assembly is disposed on the mounting plate. The cable flame-retardant layer wrapping assembly includes an injection cavity. An inlet cylinder is fixedly mounted on the upper side of the injection cavity, and an outlet cylinder is disposed on the right side of the injection cavity. A conductor ring is disposed at the center of the inner side of the outlet cylinder. Three round rods are fixedly connected between the conductor ring and the outlet cylinder. An electric heating wire is installed inside the outlet cylinder.

[0008] A heat insulation layer is provided on the outside of the heating wire.

[0009] Furthermore, the front end of the oxygen-barrier polyethylene extrusion cylinder is provided with a discharge port, and the center of the mounting plate is provided with a through hole, which is connected to the discharge port and the injection cavity.

[0010] Furthermore, a mounting base is fixedly connected to the left side of the outlet tube, and a sealing ring is provided on the mounting base. The mounting base is screwed to the right end of the injection molding cavity, and both the outlet tube and the inlet tube are connected to the inside of the injection molding cavity.

[0011] Furthermore, the sealing ring is made of polyetheretherketone (PEEK).

[0012] Furthermore, a first guide wheel and a second guide wheel are rotatably mounted on the left side of the front side of the mounting plate, and copper wire is wound around the first guide wheel and the second guide wheel.

[0013] Furthermore, a mounting top plate is fixedly installed on the right side of the mounting plate, a water pump is fixedly installed on the upper side of the mounting top plate, a water inlet pipe is connected to the side of the water pump, and a water spray nozzle is fixedly installed at the bottom of the mounting top plate, the water spray nozzle being connected to the output end of the water pump.

[0014] Furthermore, a support is fixedly installed at the bottom of the oxygen-barrier polyethylene extrusion cylinder.

[0015] Furthermore, a drive motor is fixedly installed at the rear end of the oxygen-barrier polyethylene extrusion cylinder, an extrusion auger is rotatably installed inside the oxygen-barrier polyethylene extrusion cylinder, the output end of the drive motor rotates through to the inside of the oxygen-barrier polyethylene extrusion cylinder and is connected to the extrusion auger shaft coupling, and a feeding hopper is installed on the upper side of the oxygen-barrier polyethylene extrusion cylinder.

[0016] Compared with related technologies, the extrusion equipment for producing oxygen-barrier polyethylene cable material proposed in this utility model has the following beneficial effects:

[0017] In this utility model, an extrusion device for producing oxygen-barrier polyethylene cable material is provided. A cable flame-retardant layer wrapping assembly is included. The injection cavity of this assembly receives hot-melt oxygen-barrier polyethylene extruded from the oxygen-barrier polyethylene extrusion cylinder. A copper wire spool enters the injection cavity from the inlet cylinder and then passes through the outlet cylinder. Because the injection cavity contains hot-melt oxygen-barrier polyethylene, it wraps around the outside of the copper wire. When the copper wire passes through the outlet cylinder, the inner diameter of the outlet cylinder is the outer diameter of the oxygen-barrier polyethylene wrapping layer. A guide ring is provided at the center of the outlet cylinder. Under the guidance of the guide ring, the copper wire is positioned at the center of the outlet cylinder, ensuring a uniform thickness of the oxygen-barrier polyethylene wrapping around its perimeter. Furthermore, an electric heating wire is provided inside the outlet cylinder to further heat the oxygen-barrier polyethylene, promoting the bonding between the polyethylene and the copper wire. This also prevents poor fluidity of the polyethylene at the outlet cylinder, which could lead to incomplete wrapping of the copper wire under the influence of the guide ring. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an extrusion equipment for producing oxygen-barrier polyethylene cable material proposed in this utility model. Figure 1 ;

[0019] Figure 2 A three-dimensional structural diagram of an extrusion equipment for producing oxygen-barrier polyethylene cable material proposed in this utility model. Figure 2 ;

[0020] Figure 3 This is a three-dimensional disassembled structural diagram of an extrusion equipment for producing oxygen-barrier polyethylene cable material proposed in this utility model;

[0021] Figure 4 This invention presents a partial three-dimensional disassembled structure of an extrusion equipment for producing oxygen-barrier polyethylene cable material. Figure 1 ;

[0022] Figure 5 This invention presents a partial three-dimensional disassembled structure of an extrusion equipment for producing oxygen-barrier polyethylene cable material. Figure 2 ;

[0023] Figure 6 This is a partial three-dimensional cross-sectional structural diagram of an extrusion equipment for producing oxygen-barrier polyethylene cable material according to the present invention.

[0024] In the diagram: 1. Oxygen-barrier polyethylene extrusion cylinder; 2. Support; 3. Drive motor; 4. Feed hopper; 5. Extrusion auger; 6. Discharge port; 7. Mounting plate; 8. Cable flame-retardant layer wrapping assembly; 81. Injection cavity; 82. Inlet cylinder; 83. Outlet cylinder; 84. Mounting base; 85. Sealing ring; 86. Wire ring; 87. Round rod; 88. Heating wire; 89. Heat insulation layer; 9. First guide wheel; 10. Second guide wheel; 11. Copper wire; 12. Mounting top plate; 13. Water pump; 14. Water inlet pipe; 15. Sprayer head. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Reference Figure 1-6 An extrusion device for producing oxygen-barrier polyethylene cable material includes an oxygen-barrier polyethylene extrusion cylinder 1, with an installation plate 7 screwed to the front end of the extrusion cylinder 1. A cable flame-retardant layer wrapping assembly 8 is provided on the installation plate 7. The cable flame-retardant layer wrapping assembly 8 includes an injection cavity 81, with an inlet cylinder 82 fixedly installed on the upper side of the injection cavity 81, and an outlet cylinder 83 provided on the right side of the injection cavity 81. A wire ring 86 is provided at the center of the inner side of the outlet cylinder 83. Three round rods 87 are fixedly connected between the wire ring 86 and the outlet cylinder 83. An electric heating wire 88 is installed inside the outlet cylinder 83, and a heat insulation layer 89 is provided on the outer side of the electric heating wire 88.

[0027] By setting up the insulation layer 89 as described above, the heat generated by the heating wire 88 is concentrated as much as possible towards the inside of the outlet tube 83, thereby improving energy utilization efficiency.

[0028] In this method, a support 2 is fixedly installed at the bottom of the oxygen-barrier polyethylene extrusion cylinder 1, a drive motor 3 is fixedly installed at the rear end of the oxygen-barrier polyethylene extrusion cylinder 1, an extrusion auger 5 is rotatably installed inside the oxygen-barrier polyethylene extrusion cylinder 1, the output end of the drive motor 3 rotates through to the inside of the oxygen-barrier polyethylene extrusion cylinder 1 and is connected to the extrusion auger 5 by a coupling, a feeding hopper 4 is installed on the upper side of the oxygen-barrier polyethylene extrusion cylinder 1, a discharge port 6 is opened at the front end of the oxygen-barrier polyethylene extrusion cylinder 1, a through hole is opened at the center of the mounting plate 7, the through hole is connected to the discharge port 6 and the through hole is connected to the inside of the injection cavity 81.

[0029] With the above-mentioned setup, the raw materials for producing oxygen-barrier polyethylene are added to the feeding hopper 4 and hot-melted into the interior of the oxygen-barrier polyethylene extrusion cylinder 1. The drive motor 3 drives the inner extrusion auger 5 to rotate, extruding the molten oxygen-barrier polyethylene to the front discharge port 6, and then into the injection molding cavity 81.

[0030] In this configuration, a mounting base 84 is fixedly connected to the left side of the outlet tube 83. A sealing ring 85 is provided on the mounting base 84. The mounting base 84 is screwed to the right end of the injection molding cavity 81. Both the outlet tube 83 and the inlet tube 82 are connected to the inside of the injection molding cavity 81.

[0031] With the above-mentioned setup, the mounting base 84 is screwed to the right end of the injection molding cavity 81, so that the entire cable outlet tube 83 can be easily disassembled and replaced. The inner wall of the cable outlet tube 83 is directly related to the outer diameter of the oxygen-barrier polyethylene layer. Therefore, by replacing the cable outlet tubes 83 with different inner sides, the wrapping thickness of the oxygen-barrier polyethylene on the outside of the metal copper wire 11 can be changed, thus improving the applicability.

[0032] In this method, the sealing ring 85 is made of polyetheretherketone (PEEK).

[0033] Through the above-mentioned design, polyetheretherketone (PEEK) material possesses excellent mechanical properties and chemical corrosion resistance, maintains stability under high-temperature environments, and is not easily deformed.

[0034] In this method, a first guide wheel 9 and a second guide wheel 10 are rotatably mounted on the left side of the front side of the mounting plate 7, and a copper wire 11 is wound around the first guide wheel 9 and the second guide wheel 10.

[0035] With the above configuration, the first guide wheel 9 and the second guide wheel 10 provide guidance for the copper wire 11.

[0036] In this method, a mounting plate 12 is fixedly installed on the right side of the front of the mounting plate 7, a water pump 13 is fixedly installed on the upper side of the mounting plate 12, a water inlet pipe 14 is connected to the side of the water pump 13, and a water spray head 15 is fixedly installed at the bottom of the mounting plate 12, and the water spray head 15 is connected to the output end of the water pump 13.

[0037] With the above-mentioned setup, the water spray head 15 is located on the upper right side of the cable outlet 83. When the cable wrapped with oxygen-barrier polyethylene is output from the port of the cable outlet 83, the temperature of the outer oxygen-barrier polyethylene layer is relatively high. Spraying water with the water spray head 15 can quickly cool and shape it.

[0038] The working principle of the extrusion equipment for producing oxygen-barrier polyethylene cable material provided by this utility model is as follows:

[0039] In use, the raw materials for producing oxygen-barrier polyethylene are added to the feeding hopper 4 and hot-melted into the interior of the oxygen-barrier polyethylene extrusion cylinder 1. The drive motor 3 drives the inner extrusion auger 5 to rotate, extruding the molten oxygen-barrier polyethylene through the front outlet 6 and into the injection cavity 81. At this time, the metal copper wire 11 passes through the first guide wheel 9, the second guide wheel 10, the inlet cylinder 82, the injection cavity 81, the wire ring 86, and the outlet cylinder 83 in sequence. Simultaneously, the heating wire 88 inside the outlet cylinder 83 is turned on to further heat the oxygen-barrier polyethylene, promoting the bonding between the oxygen-barrier polyethylene and the metal copper wire. When the metal copper wire 11 passes through the outlet cylinder 83, the wire ring 86 is set at the center of the outlet cylinder. Under the guidance of the wire ring 86, the metal copper wire is located at the center of the outlet cylinder 83 when it passes through, thus making the thickness of the oxygen-barrier polyethylene wrapped around its periphery uniform.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An extrusion equipment for producing oxygen-barrier polyethylene cable material, characterized in that, It includes an oxygen-barrier polyethylene extrusion cylinder (1), and an installation plate (7) is screwed to the front end of the oxygen-barrier polyethylene extrusion cylinder (1). A cable flame-retardant layer wrapping assembly (8) is provided on the installation plate (7). The cable flame retardant layer wrapping assembly (8) includes an injection cavity (81), an inlet cylinder (82) is fixedly installed on the upper side of the injection cavity (81), an outlet cylinder (83) is provided on the right side of the injection cavity (81), a wire ring (86) is provided at the center of the inner side of the outlet cylinder (83), three round rods (87) are fixedly connected between the wire ring (86) and the outlet cylinder (83), an electric heating wire (88) is installed inside the outlet cylinder (83), and a heat insulation layer (89) is provided on the outer side of the electric heating wire (88).

2. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, The front end of the oxygen-barrier polyethylene extrusion cylinder (1) is provided with a discharge port (6), and the center of the mounting plate (7) is provided with a through hole. The through hole is connected to the discharge port (6) and the through hole is connected to the inside of the injection cavity (81).

3. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, The left side of the outlet tube (83) is fixedly connected to the mounting base (84), and the mounting base (84) is provided with a sealing ring (85). The mounting base (84) is screwed to the right end of the injection cavity (81). The outlet tube (83) and the inlet tube (82) are both connected to the inside of the injection cavity (81).

4. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 3, characterized in that, The sealing ring (85) is made of polyetheretherketone.

5. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, The mounting plate (7) has a first guide wheel (9) and a second guide wheel (10) rotatably mounted on the left side of the front side, and a copper wire (11) is wound around the first guide wheel (9) and the second guide wheel (10).

6. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, A mounting plate (12) is fixedly installed on the right side of the front of the mounting plate (7). A water pump (13) is fixedly installed on the upper side of the mounting plate (12). A water inlet pipe (14) is connected to the side of the water pump (13). A water sprayer (15) is fixedly installed at the bottom of the mounting plate (12). The water sprayer (15) is connected to the output end of the water pump (13).

7. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, The bottom of the oxygen-barrier polyethylene extrusion cylinder (1) is fixedly installed with a support (2).

8. The extrusion equipment for producing oxygen-barrier polyethylene cable material according to claim 1, characterized in that, A drive motor (3) is fixedly installed at the rear end of the oxygen-barrier polyethylene extrusion cylinder (1). An extrusion auger (5) is rotatably installed inside the oxygen-barrier polyethylene extrusion cylinder (1). The output end of the drive motor (3) rotates through to the inside of the oxygen-barrier polyethylene extrusion cylinder (1) and the output end of the drive motor (3) is connected to the extrusion auger (5) via a coupling. A feeding hopper (4) is installed on the upper side of the oxygen-barrier polyethylene extrusion cylinder (1).

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