Extrusion device for cable production

Abstract

The invention discloses a cable production extrusion device which comprises an extruder with a feeding hopper, a discharging pipe of a conical cylinder structure is arranged at the end, away from the feeding hopper, of the extruder, and a heat conduction supporting plate is jointly connected between the discharging pipe and a sleeve. A heat conduction bin is arranged at the end, away from the extruder, of the side, opposite to the sleeve, of the heat conduction supporting plate, and a first spiral water pipe and a second spiral water pipe are arranged between the discharging pipe and the heat conduction supporting plate in a sleeving mode and located on the outer wall of the heat conduction supporting plate. A water storage bin with a water inlet pipe and a water outlet pipe is arranged in the sleeve and in the circumferential direction of the heat conduction supporting plate, and an annular partition plate is arranged in the water storage bin and divides the inner space of the water storage bin into a water inlet cavity and a water outlet cavity. According to the cable production extrusion device, whole-section heating in the material extrusion process can be achieved, the uniformity and continuity of material heating are improved, the situation that extrusion is hindered by cooled materials is reduced, and therefore the extrusion effect of the materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, and in particular to a cable production extrusion device. Background Art

[0002] Cables are usually rope-like cables made of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center. The entire outside is covered with a highly insulating covering. The wire extruder is used to heat extrude polyethylene, polyvinyl chloride, etc. to insulate the wire core or make it a cable sheath.

[0003] After retrieval, Chinese utility patent CN202020843531.8 discloses an extrusion device for polyethylene cable production, including a base, an extrusion barrel is provided at the upper end of the base through a support seat, a heating layer is provided on the inner wall of the extrusion barrel, a screw is provided at the center of the interior of the extrusion barrel, a first spiral conveying blade and a second spiral conveying blade are provided on the screw, a mixing sheet is provided between the first spiral conveying blade and the second spiral conveying blade, one end of the screw extends out of the extrusion barrel and is connected to a motor, a feed hopper is provided on the upper end of the extrusion barrel close to the motor, a stirring mechanism is provided inside the feed hopper, an extrusion head is detachably and sealedly connected on the side of the extrusion barrel away from the motor, the extrusion barrel and the extrusion head are connected through a discharge port, a filter screen is provided on the inner side of the extrusion head close to the extrusion barrel, a cable outlet is provided on the side of the extrusion head away from the extrusion barrel, a cable outlet channel is provided between the internal cable outlet of the extrusion head and the filter screen, an air outlet pipe is also provided on the upper end of the extrusion barrel, and a filter element is provided inside the air outlet pipe.

[0004] When the above device is used, a heating layer is provided on the inner wall of the extrusion barrel, which can heat the material in the base barrel. There is a flow channel of a certain length from the inside of the extrusion barrel to the discharge port. When the molten raw material flows in the flow channel, the raw material will cool down. The fluidity of the raw material after cooling will decrease, which will form a certain obstacle to the subsequent raw materials and affect the extrusion of the raw materials.

[0005] After searching, Chinese utility patent CN201520178091.8 discloses a multifunctional cable material extruder head, which includes a die, a core rod, a head body, and a connector. The die is arranged in the middle of the head body, and a core rod is arranged on the die. The other side of the head body is connected to the connector. The extruder head also includes an electric heater assembly, and the electric heater assembly includes a first electric heater and a second electric heater, wherein the first electric heater is arranged on both sides of the die, and the connector and the head body are provided with a second electric heater. The advantages of the utility model are as follows: 1) The overall structural design of the utility model is ingenious, compact, and highly practical; 2) The technical solution ensures that the plastic flow channel in the head is reasonable, eliminates the dead corners of accumulated plastic, and ensures the quality of the extruded product; 3) The technical solution is provided with an electric heater, which is arranged above the head body to properly heat the head body, further ensuring the quality of the product.

[0006] When the above device is used, although the material can be heated to maintain good fluidity of the material, the heat distribution is not uniform enough, resulting in uneven heating of the material, which affects the extrusion effect of the material. Summary of the invention

[0007] The purpose of the present invention is to provide a cable production extrusion device, which can not only realize the full-section heating of the material extrusion process, but also improve the uniformity and continuity of the material heating, reduce the situation where the cooled material hinders the extrusion, thereby improving the extrusion effect of the material.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cable production extrusion device, comprising: an extruder with a feeding hopper, a discharge pipe with a conical structure is arranged at one end of the extruder away from the feeding hopper, an extrusion channel is arranged between the discharge pipe and the feeding hopper and inside the extruder, the extrusion channel can connect the discharge pipe with the feeding hopper, a sleeve is installed on the side of the discharge pipe opposite to the extruder, a heat-conducting support plate is connected between the discharge pipe and the sleeve, and a heat-conducting bin is arranged on the side of the heat-conducting support plate opposite to the sleeve and at the end away from the extruder; A first spiral water pipe and a second spiral water pipe are located between the discharge pipe and the heat-conducting support plate and sleeved on the outer wall of the heat-conducting support plate. The first spiral water pipe and the second spiral water pipe are respectively spirally wound along the length direction of the heat-conducting support plate, and the first spiral water pipe and the second spiral water pipe are alternately distributed. The water inlet of the first spiral water pipe and the water outlet of the second spiral water pipe are arranged on the side away from the sleeve, and a double-way joint is arranged on the side of the heat-conducting support plate close to the sleeve, and the double-way joint connects the water outlet of the first spiral water pipe with the water inlet of the second spiral water pipe; A water storage bin having a water inlet pipe and a water outlet pipe is arranged inside the sleeve and along the circumferential direction of the heat-conducting support plate, and an annular partition is arranged inside the water storage bin, which divides the internal space of the water storage bin into a water inlet chamber and a water outlet chamber, a first pipe is arranged between the water inlet chamber and the water inlet of the first spiral water pipe, a second pipe is arranged between the water outlet chamber and the second spiral water pipe, and the water inlet chamber and the heat-conducting bin are connected by at least two connecting pipes.

[0009] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, the heat conduction chamber includes an outer shell and an inner shell, and a heat conduction cavity for storing water is formed between the outer shell and the inner shell. The connecting pipe is installed on the outer shell, and the inner cavity of the inner shell forms a molding cavity for cable molding and extrusion.

[0010] 2. In the above solution, a sealing gasket is provided between the inner shell and the outer shell and at the connection points at both ends.

[0011] 3. In the above solution, a heat-conducting film is sleeved on the inner side of the heat-conducting support plate, and the heat-conducting chamber is arranged on the side of the heat-conducting film opposite to the heat-conducting support plate.

[0012] 4. In the above solution, the end of the inner shell close to the extruder has a flared opening that fits with the thermal conductive film.

[0013] 5. In the above solution, the heat-conducting support plate includes a first segment and a second segment, the first segment is extended along the tube wall direction of the discharge tube, and the second segment is extended along the axial direction of the sleeve.

[0014] 6. In the above solution, a spiral extrusion piece is arranged inside the extrusion channel.

[0015] 7. In the above solution, a first end ring and a second end ring are fixedly provided at both ends of the discharge pipe, and the first end ring and the second end ring are fixedly connected to the heat-conducting support plate respectively.

[0016] 8. In the above solution, a water inlet pipe is provided on the upper side of the water storage tank, and a water outlet pipe is provided on the lower side of the water storage tank.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The cable production extrusion device of the present invention has a water storage bin with a water inlet pipe and a water outlet pipe arranged inside the sleeve and along the circumference of the heat-conducting support plate, and an annular partition is arranged inside the water storage bin, the annular partition divides the internal space of the water storage bin into a water inlet chamber and a water outlet chamber, and the water inlet chamber is connected to the heat-conducting bin through at least two connecting pipes. The water inlet chamber of the water storage bin is connected to the heat-conducting bin, and the heat-conducting bin is in continuous contact with the material, which can realize continuous and uniform heating of the material, so that the material maintains good fluidity, reduces the situation where the cooled material hinders the extrusion, and improves the extrusion effect.

[0018] 2. The cable production extrusion device of the present invention has a first pipe arranged between the water inlet chamber and the water inlet of the first spiral water pipe, and a second pipe arranged between the water outlet chamber and the second spiral water pipe. The alternately distributed first spiral water pipe and the second spiral water pipe are arranged at intervals along the length direction of the heat-conducting support plate. The water inlet of the first spiral water pipe and the water outlet of the second spiral water pipe are arranged on the side away from the sleeve, and a two-way joint is arranged on the side of the heat-conducting support plate close to the sleeve, the two-way joint connects the water outlet of the first spiral water pipe with the water inlet of the second spiral water pipe, the water inlet of the first spiral water pipe and the water outlet of the second spiral water pipe are located on the same side, and the alternately distributed first spiral water pipe and the second spiral water pipe are connected on the side close to the sleeve. In the process of hot water flowing in the first spiral water pipe and the second spiral water pipe, the uniformity of heat distribution is improved, ensuring that the cable is continuously and evenly heated in the front section of the extrusion process, thereby improving the extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a schematic diagram of the structure of the cable production extrusion device of the present invention; Attached Figure 2 It is a schematic diagram of the internal structure of the cable production extrusion device of the present invention; Attached Figure 3 It is a partial structural schematic diagram of the cable production extrusion device of the present invention from a first perspective; Attached Figure 4 It is a partial structural schematic diagram of the cable production extrusion device of the present invention from a second viewing angle; Attached Figure 5 It is a partial cross-sectional structural schematic diagram of the cable production extrusion device of the present invention; Attached Figure 6 A cross-sectional view showing a local structure of a cable production extrusion device according to the present invention; Attached Figure 7 The present invention is attached Figure 5 Enlarged view of point A.

[0020] In the above drawings: 1. extruder; 11. hopper; 111. extrusion channel; 12. spiral extrusion piece; 2. discharge pipe; 21. first end ring; 22. second end ring; 31. heat-conducting film; 32. heat-conducting support plate; 321. first section; 322. second section; 33. sleeve; 41. water storage bin; 411. water inlet pipe; 412. water outlet pipe; 42. heat-conducting bin; 421. connecting pipe; 422. outer shell; 423. inner shell; 4231. flaring; 4232. sealing gasket; 51. first spiral water pipe; 511. first pipeline; 52. second spiral water pipe; 521. second pipeline; 53. two-way pipe joint; 54. annular partition; 541. water inlet chamber; 542. water outlet chamber. Implementation

[0021] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0022] Embodiment 1: A cable production extrusion device, comprising: an extruder 1 with a hopper 11, a discharge pipe 2 with a conical structure is arranged at one end of the extruder 1 away from the hopper 11, an extrusion channel 111 is arranged between the discharge pipe 2 and the hopper 11 and inside the extruder 1, the extrusion channel 111 can connect the discharge pipe 2 with the hopper 11, a sleeve 33 is installed on the side of the discharge pipe 2 opposite to the extruder 1, a heat-conducting support plate 32 is connected between the discharge pipe 2 and the sleeve 33, and a heat-conducting bin 42 is arranged on the side of the heat-conducting support plate 32 opposite to the sleeve 33 and at the end away from the extruder 1; When preparing the cable, first, the cable material is put into the hopper, and the material falls into the extrusion channel. As the spiral extruder is started, the material is prompted to move along the extrusion channel toward the discharge pipe, and the material is extruded through the discharge pipe, so that the cable is extruded into shape; A first spiral water pipe 51 and a second spiral water pipe 52 are disposed between the discharge pipe 2 and the heat-conducting support plate 32 and on the outer wall of the heat-conducting support plate 32. The first spiral water pipe 51 and the second spiral water pipe 52 are respectively spirally wound along the length direction of the heat-conducting support plate 32, and the first spiral water pipe 51 and the second spiral water pipe 52 are alternately distributed. The water inlet of the first spiral water pipe 51 and the water outlet of the second spiral water pipe 52 are arranged on the side away from the sleeve 33, and a double-way joint 53 is arranged on the side of the heat-conducting support plate 32 close to the sleeve 33, and the double-way joint 53 connects the water outlet of the first spiral water pipe 51 with the water inlet of the second spiral water pipe 52; During the extrusion process, the material is pushed along the inner wall of the thermally conductive film, enters the inner shell from the expanded opening of the thermally conductive film, and introduces hot water into the water storage bin through the water inlet pipe. Since a connecting pipe is connected between the water storage bin and the thermally conductive bin, the hot water enters the thermally conductive bin, and the thermally conductive bin conducts the heat in the hot water to the extruded material; A water storage bin 41 having a water inlet pipe 411 and a water outlet pipe 412 is arranged inside the sleeve 33 and along the circumference of the heat-conducting support plate 32, and an annular partition plate 54 is arranged inside the water storage bin 41, and the annular partition plate 54 divides the internal space of the water storage bin 41 into a water inlet chamber 541 and a water outlet chamber 542, a first pipe 511 is arranged between the water inlet chamber 541 and the water inlet of the first spiral water pipe 51, a second pipe 521 is arranged between the water outlet chamber 542 and the second spiral water pipe 52, and the water inlet chamber 541 and the heat-conducting bin 42 are connected by at least two connecting pipes 421; After the water storage tank is filled with water, the water flows into the first spiral water pipe along the first pipe, and spirally moves around the heat-conducting film along the first spiral water pipe. Since a two-way pipe joint is connected between the first spiral water pipe and the second spiral water pipe, the hot water flows out of the first spiral water pipe and enters the second spiral water pipe, and spirally moves around the heat-conducting film again, so that the material is completely heated; The above-mentioned heat conduction chamber 42 includes an outer shell 422 and an inner shell 423, and a heat conduction cavity for storing water is formed between the above-mentioned outer shell 422 and the inner shell 423. The above-mentioned connecting pipe 421 is installed in the above-mentioned outer shell 422, and the inner cavity of the above-mentioned inner shell 423 forms a molding cavity for cable molding and extrusion.

[0023] The water flowing in the second spiral water pipe flows into the water storage bin through the second pipe. Due to the setting of the annular partition, the second pipe is in the water outlet cavity. Therefore, hot water cannot enter the second spiral water pipe from the second pipe. After the hot water enters the water outlet cavity from the second pipe along the second spiral water pipe, it is finally discharged through the water outlet pipe, thereby realizing the continuous flow of hot water. In this process, the heat-conducting film and the heat-conducting bin transfer the heat in the hot water to the extruded material.

[0024] A sealing gasket 4232 is disposed between the inner shell 423 and the outer shell 422 and at both ends of the connection.

[0025] A heat-conducting film 31 is sleeved on the inner side of the heat-conducting support plate 32 , and the heat-conducting chamber 42 is disposed on a side of the heat-conducting film 31 opposite to the heat-conducting support plate 32 .

[0026] One end of the inner shell 423 close to the extruder 1 has a flared opening 4231 which is in contact with the heat-conducting film 31 .

[0027] A spiral extrusion member 12 is disposed inside the extrusion channel 111 .

[0028] A first end ring 21 and a second end ring 22 are fixedly provided at both ends of the discharge pipe 2 , respectively. The first end ring 21 and the second end ring 22 are fixedly connected to the heat-conducting support plate 32 , respectively.

[0029] A water inlet pipe 411 is disposed on the upper side of the water storage bin 41 , and a water outlet pipe 412 is disposed on the lower side of the water storage bin 41 .

[0030] One end of the thermal conductive film 31 is fixedly connected to the first end ring 21 , and the other end of the thermal conductive film 31 is fixedly connected to the sleeve 33 .

[0031] Embodiment 2: A cable production extrusion device, comprising: an extruder 1 with a hopper 11, a discharge pipe 2 with a conical structure is arranged at one end of the extruder 1 away from the hopper 11, an extrusion channel 111 is arranged between the discharge pipe 2 and the hopper 11 and inside the extruder 1, the extrusion channel 111 can connect the discharge pipe 2 with the hopper 11, a sleeve 33 is installed on the side of the discharge pipe 2 opposite to the extruder 1, a heat-conducting support plate 32 is connected between the discharge pipe 2 and the sleeve 33, and a heat-conducting bin 42 is arranged on the side of the heat-conducting support plate 32 opposite to the sleeve 33 and at the end away from the extruder 1; A first spiral water pipe 51 and a second spiral water pipe 52 are disposed between the discharge pipe 2 and the heat-conducting support plate 32 and on the outer wall of the heat-conducting support plate 32. The first spiral water pipe 51 and the second spiral water pipe 52 are respectively spirally wound along the length direction of the heat-conducting support plate 32, and the first spiral water pipe 51 and the second spiral water pipe 52 are alternately distributed. The water inlet of the first spiral water pipe 51 and the water outlet of the second spiral water pipe 52 are arranged on the side away from the sleeve 33, and a double-way joint 53 is arranged on the side of the heat-conducting support plate 32 close to the sleeve 33, and the double-way joint 53 connects the water outlet of the first spiral water pipe 51 with the water inlet of the second spiral water pipe 52; The water inlet of the first spiral water pipe and the water outlet of the second spiral water pipe are located on the same side, and the alternately distributed first spiral water pipe and the second spiral water pipe are connected on the side close to the sleeve. During the flow of hot water inside the first spiral water pipe and the second spiral water pipe, the uniformity of heat distribution is improved, ensuring that the cable is continuously and evenly heated in the front part of the extrusion process, thereby improving the extrusion effect.

[0032] A water storage bin 41 having a water inlet pipe 411 and a water outlet pipe 412 is arranged inside the sleeve 33 and along the circumference of the heat-conducting support plate 32, and an annular partition plate 54 is arranged inside the water storage bin 41, and the annular partition plate 54 divides the internal space of the water storage bin 41 into a water inlet chamber 541 and a water outlet chamber 542, a first pipe 511 is arranged between the water inlet chamber 541 and the water inlet of the first spiral water pipe 51, a second pipe 521 is arranged between the water outlet chamber 542 and the second spiral water pipe 52, and the water inlet chamber 541 and the heat-conducting bin 42 are connected by at least two connecting pipes 421; The water inlet cavity of the water storage bin is connected with the heat transfer bin, and the heat transfer bin is in continuous contact with the material, so that the material can be heated continuously and evenly, so that the material maintains good fluidity, reduces the situation where the cooled material hinders the extrusion, and improves the extrusion effect.

[0033] The above-mentioned heat conduction chamber 42 includes an outer shell 422 and an inner shell 423, and a heat conduction cavity for storing water is formed between the above-mentioned outer shell 422 and the inner shell 423. The above-mentioned connecting pipe 421 is installed in the above-mentioned outer shell 422, and the inner cavity of the above-mentioned inner shell 423 forms a molding cavity for cable molding and extrusion.

[0034] A sealing gasket 4232 is disposed between the inner shell 423 and the outer shell 422 and at both ends of the connection.

[0035] A heat-conducting film 31 is sleeved on the inner side of the heat-conducting support plate 32 , and the heat-conducting chamber 42 is disposed on a side of the heat-conducting film 31 opposite to the heat-conducting support plate 32 .

[0036] The heat-conducting support plate 32 includes a first segment 321 and a second segment 322 . The first segment 321 is extended along the wall direction of the discharge pipe 2 , and the second segment 322 is extended along the axial direction of the sleeve 33 .

[0037] A spiral extrusion member 12 is disposed inside the extrusion channel 111 .

[0038] A first end ring 21 and a second end ring 22 are fixedly provided at both ends of the discharge pipe 2 , respectively. The first end ring 21 and the second end ring 22 are fixedly connected to the heat-conducting support plate 32 , respectively.

[0039] A water inlet pipe 411 is disposed on the upper side of the water storage bin 41 , and a water outlet pipe 412 is disposed on the lower side of the water storage bin 41 .

[0040] The sleeve 33 and the discharge pipe 2 are coaxially arranged.

[0041] Four connecting pipes 421 are provided.

[0042] Here’s how it works: When preparing the cable, first, the cable material is put into the hopper, and the material falls into the extrusion channel. As the spiral extruder is started, the material is prompted to move along the extrusion channel toward the discharge pipe, and the material is extruded through the discharge pipe, so that the cable is extruded into shape; During the extrusion process, the material is pushed along the inner wall of the heat-conducting film, enters the inner shell from the expanded opening of the heat-conducting film, and introduces hot water into the water storage bin through the water inlet pipe. Since a connecting pipe is connected between the water storage bin and the heat-conducting bin, the hot water enters the heat-conducting bin, and the heat-conducting bin conducts the heat in the hot water to the extruded material. After the water storage bin is filled with water, the water enters the first spiral water pipe along the first pipe, and spirally moves around the heat-conducting film along the first spiral water pipe; Since a two-way pipe joint is connected between the first spiral water pipe and the second spiral water pipe, hot water flows out of the first spiral water pipe and enters the second spiral water pipe, and spirals around the heat-conducting film again to completely heat the material, and the water flowing in the second spiral water pipe flows into the water storage bin through the second pipe. Due to the setting of the annular partition, the second pipe is in the water outlet cavity. Therefore, hot water cannot enter the second spiral water pipe from the second pipe. After the hot water enters the water outlet cavity from the second pipe along the second spiral water pipe, it is finally discharged through the water outlet pipe, thereby realizing the continuous flow of hot water. In this process, the heat-conducting film and the heat-conducting bin transfer the heat in the hot water to the extruded material.

[0043] When the above-mentioned cable production extrusion device is used, it is connected with the heat transfer bin through the water inlet chamber of the water storage bin. The heat transfer bin is in continuous contact with the material, which can realize continuous and uniform heating of the material, so that the material maintains good fluidity, reduces the situation where the cooled material hinders extrusion, and improves the extrusion effect; in addition, the water inlet of the first spiral water pipe and the water outlet of the second spiral water pipe are located on the same side, and the alternatingly distributed first spiral water pipe and the second spiral water pipe are connected on the side close to the sleeve. During the flow of hot water in the first spiral water pipe and the second spiral water pipe, the uniformity of heat distribution is improved, ensuring that the cable is continuously and evenly heated in the front part of the extrusion process, thereby improving the extrusion effect.

[0044] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable production extrusion device, comprising: An extruder (1) having a feeding hopper (11), characterized in that: a discharge pipe (2) having a conical structure is provided at one end of the extruder (1) away from the feeding hopper (11), an extrusion channel (111) is provided between the discharge pipe (2) and the feeding hopper (11) and inside the extruder (1), the extrusion channel (111) being capable of connecting the discharge pipe (2) with the feeding hopper (11), a sleeve (33) being installed on the side of the discharge pipe (2) opposite to the extruder (1), a heat-conducting support plate (32) being connected between the discharge pipe (2) and the sleeve (33), and a heat-conducting bin (42) being provided on the side of the heat-conducting support plate (32) opposite to the sleeve (33) and at the end away from the extruder (1); A first spiral water pipe (51) and a second spiral water pipe (52) are provided between the discharge pipe (2) and the heat-conducting support plate (32) and on the outer wall of the heat-conducting support plate (32); the first spiral water pipe (51) and the second spiral water pipe (52) are respectively spirally wound along the length direction of the heat-conducting support plate (32); and the first spiral water pipe (51) and the second spiral water pipe (52) are alternately distributed; a water inlet of the first spiral water pipe (51) and a water outlet of the second spiral water pipe (52) are provided on a side away from the sleeve (33); and a double-way joint (53) is provided on a side of the heat-conducting support plate (32) close to the sleeve (33); the double-way joint (53) connects the water outlet of the first spiral water pipe (51) with the water inlet of the second spiral water pipe (52); A water storage bin (41) having a water inlet pipe (411) and a water outlet pipe (412) is arranged inside the sleeve (33) and along the circumference of the heat-conducting support plate (32), and an annular partition (54) is arranged inside the water storage bin (41), the annular partition (54) dividing the internal space of the water storage bin (41) into a water inlet chamber (541) and a water outlet chamber (542), a first pipe (511) is arranged between the water inlet chamber (541) and the water inlet of the first spiral water pipe (51), a second pipe (521) is arranged between the water outlet chamber (542) and the second spiral water pipe (52), and the water inlet chamber (541) and the heat-conducting bin (42) are connected to each other via at least two connecting pipes (421).

2. The cable production extrusion device according to claim 1, characterized in that: The heat-conducting chamber (42) comprises an outer shell (422) and an inner shell (423), and a heat-conducting cavity for storing water is formed between the outer shell (422) and the inner shell (423); the connecting pipe (421) is installed on the outer shell (422), and the inner cavity of the inner shell (423) forms a molding cavity for cable molding and extrusion.

3. The cable production extrusion device according to claim 2, characterized in that: A sealing gasket (4232) is provided between the inner shell (423) and the outer shell (422) and at the connection points at both ends.

4. The cable production extrusion device according to claim 2, characterized in that: A heat-conducting film (31) is sleeved on the inner side of the heat-conducting support plate (32), and the heat-conducting chamber (42) is arranged on a side of the heat-conducting film (31) opposite to the heat-conducting support plate (32).

5. The cable production extrusion device according to claim 4, characterized in that: One end of the inner shell (423) close to the extruder (1) has a flared opening (4231) that fits with the heat-conducting film (31).

6. The cable production extrusion device according to claim 1 or 5, characterized in that: The heat-conducting support plate (32) comprises a first segment (321) and a second segment (322); the first segment (321) is extended along the wall direction of the discharge pipe (2); and the second segment (322) is extended along the axial direction of the sleeve (33).

7. The cable production extrusion device according to claim 1, characterized in that: A spiral extrusion piece (12) is arranged inside the extrusion channel (111).

8. The cable production extrusion device according to claim 1, characterized in that: A first end ring (21) and a second end ring (22) are fixedly provided at both ends of the discharge pipe (2), and the first end ring (21) and the second end ring (22) are fixedly connected to the heat-conducting support plate (32) respectively.

9. The cable production extrusion device according to claim 1, characterized in that: A water inlet pipe (411) is provided on the upper side of the water storage bin (41), and a water outlet pipe (412) is provided on the lower side of the water storage bin (41).

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