Extrusion insulation die for extruded insulation low-voltage power cable

Abstract

The utility model relates to the technical field of power cable production, in particular to an extrusion insulation die for an extruded insulation low-voltage power cable. According to the technical scheme, the cooling device comprises an extrusion die and two sets of cooling fans, a fixing base is fixedly installed on one side of the extrusion die, fixing holes are formed in the periphery of the fixing base, an insulation pad is fixedly installed on one side of the fixing base, cooling holes are formed in the extrusion die, and a cooling ring is arranged on the inner side of the extrusion die; and inlet pipes communicated with the cooling holes are fixedly mounted on the two sides of the front surface of the extrusion mold. According to the utility model, through the combination of various structures, the die can pre-cool an extruded cable, so that the situation that the cable enters a cooling pool in a high-temperature state and is deformed, cracked or cracked due to overlarge temperature difference is avoided, and the die can be used for carrying out anti-static treatment during operation; the condition that dust is adsorbed on the surface of the mold due to static electricity or the electric field of the mold is not uniformly distributed due to static electricity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power cable production, in particular to an extrusion insulation die for an extruded insulation low-voltage power cable. Background Art

[0002] Power cable is a cable used to transmit and distribute electrical energy. Power cable is commonly used in urban underground power grids, power station lead-out lines, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. Extrusion dies are needed in the production of power cables. The "extrusion insulation die for extruded insulated low-voltage power cable" disclosed in the application number "CN219267386U" has solved the technical disadvantages of easy jamming and uneven demolding speed of extruded insulated low-voltage power cable. However, in actual use, molds with similar structures still have many defects. For example, they do not have the function of pre-cooling the cable when extruding it. When the extruded high-temperature cable is directly placed in cold water, it may cause deformation, cracking or cracking. At the same time, it does not have the function of grounding and anti-static of the mold during operation. When static electricity is attached to the surface of the mold, dust will be absorbed, and static electricity may also cause uneven electric field distribution of the product, resulting in unstable cable extrusion performance. Therefore, it is necessary to design an extrusion insulation die for extruded insulated low-voltage power cable. Utility Model Content

[0003] The utility model aims to provide an extrusion insulation die for an extruded insulation low-voltage power cable to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion insulation die for extruded insulated low-voltage power cable, comprising an extrusion die and two groups of cooling fans, a fixing seat is fixedly installed on one side of the extrusion die, and fixing holes are arranged around the fixing seat, an insulating pad is fixedly installed on one side of the fixing seat, cooling holes are arranged inside the extrusion die, and a cooling ring is arranged on the inner side of the extrusion die, inlet pipes connected to the cooling holes are fixedly installed on both sides of the front of the extrusion die, and an exhaust pipe connected to the cooling holes is fixedly installed on one side of the back of the extrusion die, an extrusion head is arranged on the other side of the extrusion die, an assembly frame is fixedly installed on one side of the cooling fan, an assembly seat adapted to the assembly frame is fixedly installed on the other side of the outside of the extrusion die, a stabilizing frame is fixedly installed on the other side of the cooling fan, and a through ring is fixedly installed at the central position of the stabilizing frame, a grounding seat is fixedly installed on the bottom of the extrusion die, and a grounding wire is fixedly connected to the grounding seat.

[0005] An extrusion insulation die for an extruded insulated low-voltage power cable using the technical solution, wherein the fixing seat and the fixing hole can be installed at the output end of the extruder through bolts, so that the cable can be produced and extruded through the extrusion die, the insulating pad can insulate the extrusion die and the extruder during installation, the cooling hole facilitates the flow of coolant inside the extrusion die, and the cooling ring can absorb the heat of the formed production raw materials, so that the raw materials formed inside the extrusion die can be pre-cooled through the cooling hole and the cooling ring, the inlet pipe and the butt joint can be connected to the external coolant pipe, so that the coolant can enter the cooling hole, and the discharge pipe is connected through the recovery pipe outside the butt joint, so that the cooling liquid after cooling can be recovered;

[0006] One side of the assembly rack is fixedly mounted on the assembly seat outside the extrusion die, so that two sets of cooling fans can be installed and fixed through the assembly rack and the assembly seat. The two sets of cooling fans can pre-cool the cables extruded by the extrusion die by air cooling. The pre-cooling of the cables facilitates the subsequent cooling process, thereby avoiding deformation, cracking or cracking caused by excessive temperature difference when the cables enter the cooling pool under high temperature, thereby increasing the stability of subsequent cable cooling. The stabilizing rack can connect and reinforce the other side of the two sets of cooling fans, and the through ring facilitates the discharge of the formed and cooled cables.

[0007] The grounding socket can be used to install the grounding wire, so that the extrusion die can be grounded through the grounding socket and the grounding wire when in use. Grounding the extrusion die can avoid static electricity adhesion, avoid static electricity adhesion on the extrusion die causing dust and particles to be adsorbed on the surface, and avoid static electricity causing uneven electric field distribution of the extrusion die resulting in unstable performance.

[0008] Preferably, a contact is fixedly connected to the bottom of the grounding wire, and a spring wire is arranged on the grounding wire. The contact facilitates the installation and connection of the grounding wire when it is grounded, and the spring wire can elastically stretch and shrink the grounding wire when it is used.

[0009] Preferably, an air outlet hood is fixedly installed at the output end of the cooling fan, and a protective net is fixedly installed at the input end of the cooling fan. The air outlet hood can discharge air when the cooling fan is in operation, and the protective net can provide protection when the cooling fan is in operation.

[0010] Preferably, the connection ends of the inlet pipe and the outlet pipe are both fixedly mounted with a butt joint, which facilitates the butt joint between the inlet pipe and the outlet pipe and an external pipeline.

[0011] Preferably, a butt joint convex ring is fixedly mounted on one side of the fixing seat, and a sealing gasket is attached to one side of the butt joint convex ring. The butt joint convex ring and the sealing gasket increase the sealing performance when the fixing seat is installed and connected with the external extruder.

[0012] Preferably, protective covers are fixedly mounted on the front and back of the cooling fan, so as to protect the extruded cables and avoid interference of external factors on the extrusion of the cables.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting the coordination between the cooling hole, the cooling pipe and the cooling fan, the cooling hole can circulate the cooling liquid, so that the coolant in the cooling hole and the cooling pipe can pre-cool the raw materials after forming in the mold through the water-cooling wind speed. At the same time, the cooling fan can pre-cool the cable extruded by the mold by air cooling. The pre-cooling cooling of the cable can reduce the temperature when entering the cooling pool, avoiding deformation, cracking or cracking of the cable due to excessive temperature difference when entering the cooling pool under high temperature.

[0015] 2. By setting the coordination between the grounding seat, the grounding wire and the spring wire, the grounding seat and the grounding wire can be used to ground the mold when it is in use. At the same time, the spring wire can elastically stretch the length of the grounding wire. By grounding the mold, static electricity can be avoided during operation, which can prevent static electricity from absorbing dust on the mold surface, or static electricity from causing uneven electric field distribution of the mold, resulting in unstable mold performance, thereby increasing the stability of the mold during cable production and extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a side structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the extrusion die of the utility model;

[0019] Figure 4 This is a schematic diagram of the extrusion die structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the cooling fan structure of the utility model.

[0021] In the figure: 1. fixing seat; 101. fixing hole; 102. insulating pad; 103. sealing pad; 104. docking convex ring; 2. extrusion die; 201. cooling hole; 202. cooling ring; 203. extrusion head; 204. assembly seat; 205. grounding seat; 3. inlet pipe; 301. docking head; 302. outlet pipe; 4. grounding wire; 401. spring wire; 402. contact; 5. cooling fan; 501. air outlet hood; 502. protective net; 6. stabilizing frame; 601. through ring; 7. protective cover; 8. assembly frame. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model proposes an extrusion insulation die for extruded insulated low-voltage power cable, comprising an extrusion die 2 and two sets of cooling fans 5, a fixing seat 1 is fixedly installed on one side of the extrusion die 2, and fixing holes 101 are arranged around the fixing seat 1, an insulating pad 102 is fixedly installed on one side of the fixing seat 1, a cooling hole 201 is arranged inside the extrusion die 2, and a cooling ring 202 is arranged on the inner side of the extrusion die 2, inlet pipes 3 connected with the cooling hole 201 are fixedly installed on both sides of the front of the extrusion die 2, and the extrusion die 2 A discharge pipe 302 connected to the cooling hole 201 is fixedly installed on one side of the back, an extrusion head 203 is provided on the other side of the extrusion die 2, an assembly frame 8 is fixedly installed on one side of the cooling fan 5, an assembly seat 204 adapted to the assembly frame 8 is fixedly installed on the other side of the outside of the extrusion die 2, a stabilizing frame 6 is fixedly installed on the other side of the cooling fan 5, and a through ring 601 is fixedly installed at the central position of the stabilizing frame 6, a grounding seat 205 is fixedly installed on the bottom of the extrusion die 2, and a grounding wire 4 is fixedly connected to the grounding seat 205;

[0025] A contact 402 is fixedly connected to the bottom of the grounding wire 4 , and a spring wire 401 is provided on the grounding wire 4 . The connecting ends of the inlet pipe 3 and the outlet pipe 302 are both fixedly installed with docking joints 301 .

[0026] The working principle of the extrusion insulation die for extruded insulated low-voltage power cable based on Example 1 is as follows: the fixing seat 1 and the fixing hole 101 can be installed on the output end of the extruder through bolts, so that the cable can be produced and extruded through the extrusion die 2, the insulating pad 102 can insulate the extrusion die 2 when it is installed with the extruder, the cooling hole 201 facilitates the flow of coolant inside the extrusion die 2, and the cooling ring 202 can absorb the heat of the molded production raw materials, so that the raw materials molded in the extrusion die 2 can be pre-cooled through the cooling hole 201 and the cooling ring 202, the inlet pipe 3 and the docking head 301 can be connected to the external coolant pipe, so that the coolant can enter the cooling hole 201, and the discharge pipe 302 is connected through the recovery pipeline outside the docking head 301, so that the cooling liquid after cooling can be recovered;

[0027] One side of the assembly rack 8 is fixedly mounted on the assembly seat 204 outside the extrusion die 2, so that the two groups of cooling fans 5 can be installed and fixed through the assembly rack 8 and the assembly seat 204. The two groups of cooling fans 5 can pre-cool the cables extruded by the extrusion die 2 by air cooling. The pre-cooling of the cables facilitates the subsequent cooling process, thereby avoiding the deformation, cracking or cracking of the cables due to excessive temperature difference when entering the cooling pool under high temperature, thereby increasing the stability of the subsequent cooling of the cables. The stabilizing rack 6 can connect and reinforce the other sides of the two groups of cooling fans 5, and the penetrating ring 601 facilitates the discharge of the formed and cooled cables;

[0028] The grounding socket 205 can be used to install the grounding wire 4, so that the extrusion die 2 can be grounded through the grounding socket 205 and the grounding wire 4 when in use. By grounding the extrusion die 2, static electricity can be avoided, and static electricity on the extrusion die 2 can be avoided, resulting in dust and particles adsorbed on the surface. Static electricity can also be avoided, causing uneven electric field distribution of the extrusion die 2 and unstable performance. The contact 402 facilitates the installation and connection of the grounding wire 4 when it is grounded, and the spring wire 401 can elastically stretch and contract the grounding wire 4 when in use.

[0029] Embodiment 2

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the utility model proposes an extrusion insulation die for extruded insulated low-voltage power cable. Compared with the first embodiment, this embodiment also includes: an air outlet hood 501 is fixedly installed at the output end of the cooling fan 5, and a protective net 502 is fixedly installed at the input end of the cooling fan 5, a docking convex ring 104 is fixedly installed on one side of the fixing seat 1, and a sealing gasket 103 is attached to one side of the docking convex ring 104, and protective covers 7 are fixedly installed on the front and back sides of the cooling fan 5.

[0031] In this embodiment, Figure 1 and Figure 2 , Figure 5 As shown, the air outlet cover 501 can discharge air when the cooling fan 5 is in operation, and the protective net 502 can provide protection for the cooling fan 5 when it is in operation; Figure 2 and Figure 3 As shown, the butt convex ring 104 and the sealing gasket 103 increase the sealing performance when the fixing base 1 is installed and connected with the external extruder; Figure 1 and Figure 2 , Figure 5 As shown, the protective cover 7 can protect the extruded cable and prevent external factors from interfering with the cable during extrusion.

[0032] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An extrusion insulation die for extruded insulation low-voltage power cable, comprising an extrusion die (2) and two sets of cooling fans (5), characterized in that: A fixing seat (1) is fixedly mounted on one side of the extrusion die (2), and fixing holes (101) are arranged around the fixing seat (1); an insulating pad (102) is fixedly mounted on one side of the fixing seat (1); a cooling hole (201) is arranged inside the extrusion die (2), and a cooling ring (202) is arranged on the inner side of the extrusion die (2); inlet pipes (3) connected to the cooling hole (201) are fixedly mounted on both sides of the front side of the extrusion die (2), and an outlet pipe (3) connected to the cooling hole (201) is fixedly mounted on one side of the back side of the extrusion die (2). 02), an extrusion head (203) is provided on the other side of the extrusion die (2), an assembly frame (8) is fixedly installed on one side of the cooling fan (5), an assembly seat (204) adapted to the assembly frame (8) is fixedly installed on the other side of the outside of the extrusion die (2), a stabilizing frame (6) is fixedly installed on the other side of the cooling fan (5), and a through ring (601) is fixedly installed at the central position of the stabilizing frame (6), a grounding seat (205) is fixedly installed on the bottom of the extrusion die (2), and a grounding wire (4) is fixedly connected to the grounding seat (205).

2. The extrusion insulation die for an extruded insulated low-voltage power cable according to claim 1, characterized in that: A contact (402) is fixedly connected to the bottom of the grounding wire (4), and a spring wire (401) is arranged on the grounding wire (4).

3. The extrusion insulation die for an extruded insulated low-voltage power cable according to claim 1, characterized in that: An air outlet hood (501) is fixedly mounted on the output end of the cooling fan (5), and a protective net (502) is fixedly mounted on the input end of the cooling fan (5).

4. The extrusion insulation die for an extruded insulated low-voltage power cable according to claim 1, characterized in that: The connecting ends of the inlet pipe (3) and the outlet pipe (302) are both fixedly mounted with a butt joint (301).

5. The extrusion insulation die for extruded insulation low-voltage power cable according to claim 1, characterized in that: A butt joint convex ring (104) is fixedly mounted on one side of the fixing seat (1), and a sealing gasket (103) is attached to one side of the butt joint convex ring (104).

6. The extrusion insulation die for extruded insulation low-voltage power cable according to claim 1, characterized in that: Protective covers (7) are fixedly mounted on the front and back sides of the cooling fan (5).

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