A cable extrusion device

Abstract

This utility model belongs to the technical field of extrusion mechanisms, specifically relating to a cable extrusion device, including a material extrusion mechanism comprising an extrusion channel, a conical nozzle for discharging material, a sealing plate, a filter plate for filtering impurities, a heat-conducting sleeve, an electric heating tube for heating, and a ceramic sleeve for heat insulation. The extrusion channel has a cylindrical structure, with the conical nozzle fixedly mounted on one side. A sealing plate is mounted on the end of the extrusion channel away from the conical nozzle, and the filter plate is embedded and fixed inside the conical nozzle. This design ensures uniform material propulsion through the cooperation of the extrusion channel and the spiral blades, while the heating function of the electric heating tube makes the molten state of the material easier to control. The filter plate effectively filters particulate impurities, avoiding defects caused by impurities when the insulation layer wraps the cable core. The combination of the heat-conducting sleeve and the ceramic sleeve not only improves heating efficiency but also provides heat insulation protection, preventing heat loss and protecting operational safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable core extrusion production, and specifically relates to a cable extrusion device. Background Technology

[0002] In the wire and cable manufacturing industry, extrusion is one of the core processes in production. It mainly involves using an extruder to uniformly coat molten polymer materials onto the surface of the conductor or cable core to form an insulation layer or sheath. Traditional extrusion processes typically include two main stages: melt extrusion and shaping and cooling. The cooling stage has a significant impact on the mechanical properties, electrical properties, and surface quality of the cable.

[0003] Currently, most production lines use water tank cooling or segmented air cooling to rapidly cool the cables from a high-temperature molten state to room temperature, in order to avoid performance degradation caused by changes in material crystallinity or structural relaxation.

[0004] Currently, the wire core of cables is produced simultaneously with the insulation layer or sheath during extrusion. Therefore, during cable extrusion, it is necessary to ensure that the feeding speed of the insulation layer is uniformly matched during the conveying process. Furthermore, after the insulation layer is extruded simultaneously, in order to prevent the material from being damaged due to the instantaneous alternation of hot and cold during the cooling process, a transition cooling structure can be added at the discharge port to make the cooling curve of the insulation layer after extrusion smoother. Utility Model Content

[0005] The purpose of this invention is to provide a cable extrusion device, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cable extrusion device, comprising, The material extrusion mechanism includes an extrusion channel, a conical nozzle for discharging material, a sealing plate, a filter plate for filtering impurities, a heat-conducting sleeve, electric heating tubes for heating, and a ceramic sleeve for heat insulation. The extrusion channel has a cylindrical structure. A conical nozzle is fixedly mounted on one side of the extrusion channel. A sealing plate is mounted on the end of the extrusion channel away from the conical nozzle. A filter plate is embedded and fixed inside the conical nozzle. Both the extrusion channel and the heat-conducting sleeve are made of stainless steel. The surface of the extrusion channel is covered and fixedly covered with the heat-conducting sleeve. Several electric heating tubes are embedded and distributed inside the heat-conducting sleeve. The outside of the heat-conducting sleeve is covered with a ceramic sleeve. The cable core extrusion mechanism includes a transition interface, a die seat for mixing and extruding the cable core and materials, a sealing sleeve one for sealing the cable core, and a sealing sleeve two for sealing the cable core and materials during extrusion. The end flange of the conical nozzle is connected to the transition interface, and the end of the transition interface is welded to the die seat. The die seat has a mixing chamber inside, and the transition interface is connected to the mixing chamber. One end of the die seat is fixedly fixed with the sealing sleeve one, and the other end of the die seat away from the sealing sleeve one is fixedly fixed with the sealing sleeve two.

[0007] In a preferred embodiment of this utility model, a sealing bearing is fixed through the center of the sealing plate, and a shaft is inserted through the sealing bearing with interference fit. A spiral blade is wound around the surface of the shaft, and the outer spiral surface of the spiral blade is fitted to the inner wall of the extrusion channel.

[0008] In a preferred embodiment of this utility model, a motor is fixedly installed on the side of the sealing plate away from the extrusion channel by a bracket. The motor has a rotating shaft inside for driving, and the end of the rotating shaft is fixedly connected to the shaft rod by a coupling. A funnel is fixedly installed through the upper end of the extrusion channel near the sealing plate.

[0009] As a preferred embodiment of this utility model, the lower end of the ceramic sleeve is fixedly fitted with a base, and both sides of the base are provided with a plurality of mounting holes penetrating its interior.

[0010] As a preferred embodiment of this utility model, one end of the mold base is provided with a transition cooling mechanism, the transition cooling mechanism includes a sleeve, one end of the sleeve is sleeved with a sealing sleeve, and the surface of the sleeve is covered with a cooling sleeve.

[0011] As a preferred embodiment of this utility model, the cooling jacket is provided with a cold water chamber inside, the cold water chamber is a ring structure, and a cold water inlet and a cold water outlet are respectively fixed through the upper end of the cooling jacket, and the cold water inlet and the cold water outlet are respectively connected to the cold water chamber.

[0012] In a preferred embodiment of this utility model, both sides of the sleeve are fixedly mounted with collars by brackets. The surface of the mold base is welded and fixed with a threaded post corresponding to the position of the collar. The surface of the threaded post slides through the corresponding collar. A threaded cap is threadedly installed at the end of the threaded post. One end of the threaded cap is tightly abutted against the end face of the collar.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution ensures uniform material feeding through the combination of extrusion channel and spiral blades, while the heating function of electric heating tube makes the melting state of the material easier to control. The filter plate effectively filters particulate impurities, avoiding defects caused by impurities when the insulation layer wraps the cable core. The combination of heat-conducting sleeve and ceramic sleeve not only improves heating efficiency but also plays a role in heat insulation and protection, preventing heat loss and protecting operational safety. 2. As described in 1, the design of sealing sleeve one and sealing sleeve two effectively prevents material leakage and ensures the uniformity of insulation layer thickness. The setting of the mixing chamber makes the cable core and material more tightly bonded, improving the wrapping quality of the insulation layer. The rigid connection of the mold base and the flange docking of the transition interface further enhance the stability of the structure, making the extrusion process smoother and reducing product defects caused by vibration or displacement. 3. As described in 2, the cooling mechanism improves the cooling effect of the insulation material, avoids material shrinkage and separation caused by sudden temperature drop, and the cooling jacket achieves uniform cooling through cold water circulation, making the bond between the insulation layer and the cable core more solid. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram showing the distribution of the various mechanisms of this utility model; Figure 2 This is a schematic diagram of the overall front structure of this utility model; Figure 3 This is a schematic diagram of the overall internal structure of this utility model; Figure 4 This is a front view of the mold base of this utility model; Figure 5 This is a side view of the mold base of this utility model; Figure 6 This is a schematic diagram of the shape of the cold water cavity of this utility model.

[0015] In the diagram: 1. Material extrusion mechanism; 10. Extrusion channel; 11. Conical nozzle; 12. Sealing plate; 13. Filter plate; 14. Sealed bearing; 15. Shaft; 16. Spiral blade; 17. Motor; 18. Funnel; 101. Heat-conducting sleeve; 102. Heating element; 103. Ceramic sleeve; 104. Base; 105. Mounting hole; 2. Cable core extrusion mechanism; 20. Transition interface; 21. Die base; 22. Sealing sleeve one; 23. Sealing sleeve two; 3. Transition cooling mechanism; 30. Sleeve; 31. Cooling jacket; 32. Cold water chamber; 33. Cold water outlet; 34. Cold water inlet; 301. Threaded post; 302. Collar; 303. Threaded cap. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Example 1 Reference Figures 1-6 This is the first embodiment of the present invention, which provides a cable extrusion device, comprising: The material extrusion mechanism 1 includes an extrusion channel 10, a conical nozzle 11 for discharging material, a sealing plate 12, a filter plate 13 for filtering impurities, a heat-conducting sleeve 101, an electric heating tube 102 for heating, and a ceramic sleeve 103 for heat insulation. The extrusion channel 10 has a cylindrical structure. The conical nozzle 11 is fixedly mounted on one side of the extrusion channel 10, and the sealing plate 12 is mounted on the end of the extrusion channel 10 away from the conical nozzle 11. The filter plate 13 is embedded and fixed inside the conical nozzle 11. Both the extrusion channel 10 and the heat-conducting sleeve 101 are made of stainless steel, and the surface of the extrusion channel 10 is covered and fixedly fitted with the heat-conducting sleeve 101. 01. Several electric heating tubes 102 are embedded inside the heat-conducting sleeve 101. The outside of the heat-conducting sleeve 101 is wrapped with a ceramic sleeve 103. The extrusion channel 10 can ensure the stable delivery of materials. The filter plate 13 can filter particulate impurities when the material becomes molten and passes through the filter plate 13 to avoid affecting the quality of the insulation layer wrapping the cable core. The funnel 18 can ensure the stable entry of materials. When the material is slowly extruded through the spiral blade 16, the heating effect of the electric heating tubes 102 can melt the material and make it into a molten state. The ceramic sleeve 103 can play a role in heat insulation and protection. The cable core extrusion mechanism 2 includes a transition interface 20, a die seat 21 for mixing and extruding the cable core and materials, a sealing sleeve 22 for sealing the cable core as it passes through, and a sealing sleeve 23 for sealing the cable core and materials during extrusion. The end flange of the conical nozzle 11 is connected to the transition interface 20. The end of the transition interface 20 is welded to the die seat 21. The die seat 21 has a mixing chamber inside. The transition interface 20 is connected to the mixing chamber. One end of the die seat 21 is fixed with the sealing sleeve 22 through it. The other end of the die seat 21 away from the sealing sleeve 22 is fixed with the sealing sleeve 23 through it. The sealing sleeve 22 can seal the penetration position of the cable core when it enters the mixing chamber of the die seat 21, preventing material leakage when the material is fed into the mixing chamber. The sealing sleeve 23 can position the outer ring shape of the insulation layer when the cable core comes into contact with the insulation material, and at the same time, prevent the material from being over-extruded, which would cause uneven insulation layer thickness.

[0020] A sealing bearing 14 is fixed through the center of the sealing plate 12. A shaft 15 is inserted through the sealing bearing 14. A spiral blade 16 is wound around the surface of the shaft 15. The outer spiral surface of the spiral blade 16 is fitted to the inner wall of the extrusion channel 10. The shaft 15 can rotate based on the sealing bearing 14. The spiral conveying effect of the spiral blade 16 ensures the stable extrusion of the material.

[0021] Among them, a motor 17 is fixedly installed on the side of the sealing plate 12 away from the extrusion channel 10 by a bracket. The motor 17 has a rotating shaft inside for driving, and the end of the rotating shaft is fixedly connected to the shaft 15 by a coupling. When the power of the motor 17 is turned on, the motor 17 can be driven by the rotating shaft, and can drive the shaft 15 to move in linkage, thereby enabling the spiral blade 16 to realize spiral feeding.

[0022] The ceramic sleeve 103 is fixedly fitted with a base 104 at its lower end. Several mounting holes 105 are provided on both sides of the base 104, which can support the whole structure. The whole structure can be fixed to the ground by screws or bolts passing through the mounting holes 105.

[0023] One end of the mold base 21 is provided with a transition cooling mechanism 3, which includes a sleeve 30. One end of the sleeve 30 is sleeved with the sealing sleeve 23. The surface of the sleeve 30 is covered with a cooling sleeve 31. The sleeve 30 can contact the insulating material wrapped in the cable core from the position of the sealing sleeve 23, further extending the conveying channel. This can ensure the auxiliary shaping of the insulating material wrapped in the cable core. At the same time, in conjunction with the heat conduction effect of the cooling sleeve 31, the cable core wrapped with the insulating material can be appropriately cooled before entering the cold water. This makes the cooling curve smoother and avoids excessive temperature difference during the cooling process, which could cause excessive material shrinkage and separation from the cable core.

[0024] The cooling jacket 31 has a cold water chamber 32 inside. The cold water chamber 32 has a ring structure. The upper end of the cooling jacket 31 is fixed with a cold water inlet 33 and a cold water outlet 34. The cold water inlet 33 and the cold water outlet 34 are respectively connected to the cold water chamber 32. The cold water inlet 33 can fill the cold water chamber 32 with cold water, and the cold water outlet 34 can discharge the cold water, thereby realizing the circulation of cold water inside the cold water chamber 32.

[0025] Both sides of the sleeve 30 are fixedly mounted with collars 302 by brackets. The surface of the mold base 21 is welded and fixed with threaded post 301 corresponding to the position of collar 302. The surface of the threaded post 301 slides through the corresponding collar 302. The end of the threaded post 301 is threadedly mounted with a threaded cap 303. One end of the threaded cap 303 is tightly abutted against the end face of the collar 302. In order to facilitate the disassembly and cleaning of the cooling sleeve 31, the threaded cap 303 is rotated so that the threaded cap 303 and the threaded post 301 can be threadedly separated from each other, thereby allowing the threaded post 301 to disengage from the collar 302, thus realizing the separation of the sleeve 30 and the mold base 21.

[0026] In practice In this scheme, after the material enters through the extrusion channel 10, the motor 17 drives the rotating shaft to rotate the shaft 15. The shaft 15 achieves stable rotation through the sealed bearing 14 and pushes the spiral blade 16 to be spirally conveyed in the extrusion channel 10. The electric heating tube 102 is embedded in the heat-conducting sleeve 101. After being energized, it generates heat and is evenly conducted to the internal material through the stainless steel extrusion channel 10, causing it to gradually melt into a fluid state. Under the extrusion action of the spiral blade 16, the molten material moves towards the conical nozzle 11. During the process, the filter plate 13 filters impurities to ensure the purity of the molten material. The ceramic sleeve 103 wraps around the outside of the heat-conducting sleeve 101 to effectively reduce heat loss and maintain the stability of the working temperature. The sealing plate 12 and the extrusion channel 10 are sealed to prevent material leakage. Finally, the molten material enters the transition interface 20 through the conical nozzle 11 to prepare for the subsequent cable core coating. The cable core enters the mixing chamber of the mold base 21 through the sealing sleeve 22. The tight structure of the sealing sleeve 22 prevents the molten material from leaking back. The transition interface 20 introduces the molten material into the mixing chamber, which uniformly wraps the surface of the cable core under pressure. The sealing sleeve 23 shapes the composite cable core and insulation layer, controlling the consistency of the insulation layer thickness. The mixing chamber design of the mold base 21 ensures that the material and the cable core are in full contact, avoiding the generation of air bubbles or voids. The sleeve 30 of the transition cooling mechanism 3 further extends the shaping channel. The cooling sleeve 31 is cooled by circulating cold water in the cold water chamber 32. The cold water enters from the cold water inlet 33 and exits from the cold water outlet 34, which initially cools the wrapping layer, making the material shrink more gradually and preventing the insulation layer from peeling off from the cable core due to sudden cooling. The fixing structure of the threaded post 301 and the collar 302 facilitates the disassembly and maintenance of the cooling sleeve 31.

[0027] To provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0028] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cable extrusion apparatus characterized by: include, The material extrusion mechanism (1) includes an extrusion channel (10), a conical nozzle (11) for discharging material, a sealing plate (12), a filter plate (13) for filtering impurities, a heat-conducting sleeve (101), an electric heating tube (102) for heating, and a ceramic sleeve (103) for heat insulation. The extrusion channel (10) is a cylindrical structure. A conical nozzle (11) is fixedly installed on one side of the extrusion channel (10). A sealing plate (12) is installed at the end of the extrusion channel (10) away from the conical nozzle (11). A filter plate (13) is embedded and fixed inside the conical nozzle (11). Both the extrusion channel (10) and the heat-conducting sleeve (101) are made of stainless steel. The surface of the extrusion channel (10) is covered and fixedly covered with the heat-conducting sleeve (101). Several electric heating tubes (102) are embedded and distributed inside the heat-conducting sleeve (101). The outside of the heat-conducting sleeve (101) is covered with a ceramic sleeve (103). The cable core extrusion mechanism (2) includes a transition interface (20), a die seat (21) for mixing and extruding the cable core and materials, a sealing sleeve one (22) for sealing the cable core, and a sealing sleeve two (23) for sealing the cable core and materials during extrusion. The end flange of the conical nozzle (11) is connected to the transition interface (20). The end of the transition interface (20) is welded to the die seat (21). The die seat (21) has a mixing chamber inside. The transition interface (20) is connected to the mixing chamber. One end of the die seat (21) is fixed with the sealing sleeve one (22), and the end of the die seat (21) away from the sealing sleeve one (22) is fixed with the sealing sleeve two (23).

2. A cable extrusion apparatus as claimed in claim 1, wherein: A sealing bearing (14) is fixed through the center of the sealing plate (12). A shaft (15) is inserted through the sealing bearing (14) and is interference-fitted inside. A spiral blade (16) is wound around the surface of the shaft (15). The outer spiral surface of the spiral blade (16) is fitted to the inner wall of the extrusion channel (10).

3. A cable extrusion apparatus as claimed in claim 2, wherein: A motor (17) is fixedly installed on the side of the sealing plate (12) away from the extrusion channel (10) by a bracket. The motor (17) has a rotating shaft for driving inside, and the end of the rotating shaft is fixedly connected to the shaft (15) by a coupling. A funnel (18) is fixedly installed through the upper end of the extrusion channel (10) and near the sealing plate (12).

4. A cable extrusion apparatus as defined in claim 1, wherein: The lower end of the ceramic sleeve (103) is fixedly fitted with a base (104), and several mounting holes (105) penetrating the interior are provided on both sides of the base (104).

5. A cable extrusion apparatus as defined in claim 1, wherein: One end of the mold base (21) is provided with a transition cooling mechanism (3), the transition cooling mechanism (3) includes a sleeve (30), one end of the sleeve (30) is sleeved with the sealing sleeve (23), and the surface of the sleeve (30) is covered with a cooling sleeve (31).

6. A cable extrusion apparatus as claimed in claim 5, wherein: The cooling jacket (31) has a cold water chamber (32) inside. The cold water chamber (32) has an annular structure. The upper end of the cooling jacket (31) is fixed with a cold water inlet (33) and a cold water outlet (34). The cold water inlet (33) and the cold water outlet (34) are respectively connected to the cold water chamber (32).

7. A cable extrusion apparatus as claimed in claim 6, wherein: Both sides of the sleeve (30) are fixedly installed with collars (302) by brackets. The surface of the mold base (21) is welded and fixed with a threaded post (301) corresponding to the position of the collar (302). The surface of the threaded post (301) slides through the corresponding collar (302). A threaded cap (303) is threadedly installed at the end of the threaded post (301). One end of the threaded cap (303) is tightly abutted against the end face of the collar (302).

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