Multilayer composite cable protection pipe co-extrusion molding device

Abstract

The application discloses a kind of multilayer composite cable protection pipe co-extrusion forming device, it is related to plastic recycling extrusion into pipe technical field including: including support part, including fixed mounting on support part on the crushing unit, and fixed mounting on the extrusion unit of crushing unit, and extrusion unit is fixedly connected with support part;Crushing unit, including fixed mounting on support part on driving piece, and fixed mounting on driving piece on crushing assembly.The application uses recycled plastic particles as raw material, through crushing, conveying, melting, extrusion, synchronous cooling and so on Integrated structure design, realize waste plastic recycling and reuse, full without manual segmented operation, each component automatic collaborative operation, continuous operation, form a complete and efficient automatic production line, not only can the recycling plastic particles be fully refined, uniformly melt, avoid the problem such as product cracking, bagging due to uneven raw materials.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling extrusion tube technology, and in particular to a co-extrusion molding apparatus for multi-layer composite cable protection tubes. Background Technology

[0002] Cable protection pipes are protective conduits that cover the outside of cables. They are mainly used in areas where communication cables and power lines cross. They can prevent accidents such as cable energization and equipment burnout caused by power line breakage and short circuits. At the same time, they can also isolate the magnetic field interference of power lines to a certain extent, effectively protecting the safety of cables and related equipment.

[0003] In the current production of cable protection pipes, the plastic granules are not cut sufficiently, and large particles are easily left behind. This causes cracks and bulges to appear on the outer wall of the extruded pipe, resulting in rework. In addition, traditional water tank cooling can only cool the outer wall of the pipe and cannot cool the inner wall at the same time, resulting in long cooling time and low efficiency, which in turn affects the overall production efficiency. Summary of the Invention

[0004] In view of the problems existing in the current multi-layer composite cable protection pipe co-extrusion molding device, the inventors have proposed the present invention.

[0005] Therefore, the present invention provides a multi-layer composite cable protection pipe co-extrusion molding device, the purpose of which is to solve the problems of insufficient cutting of plastic particles in the production of existing cable protection pipes, which easily leads to pipe defects and rework, and the problems of uneven internal and external cooling and low efficiency of traditional cooling methods, which seriously affect the production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-layer composite cable protection pipe co-extrusion molding device, comprising a support part, including a crushing unit fixedly installed on the support part, and an extrusion unit fixedly installed on the crushing unit, wherein the extrusion unit is fixedly connected to the support part; the crushing unit includes a driving component fixedly installed on the support part, and a crushing assembly fixedly installed on the driving component; the extrusion unit includes an extrusion assembly fixedly installed on the crushing assembly, and a cooling assembly fixedly installed at the other end of the extrusion assembly, wherein both the cooling assembly and the extrusion assembly are fixedly connected to the support part.

[0007] As a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipes of the present invention, the crushing component includes a guide shell fixedly installed on the support, a feeding component fixedly installed on the guide shell, a protective shell fixedly installed on the guide shell, and a guiding component fixedly installed on the protective shell, wherein the guiding component is fixedly connected to the extrusion component.

[0008] As a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipes of the present invention, wherein: a conveying auger is fixedly installed at the output end of the drive component, and the conveying auger is slidably connected to the guide shell.

[0009] In a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipes described in this invention, a drive wheel is fixedly installed at one end of the conveying auger, and a filter ring is fixedly installed at one end of the drive wheel, with the filter ring rotatably connected to the protective shell.

[0010] In a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipes described in this invention, a crushing component is rotatably mounted on the protective shell, and the crushing component is meshed with the drive wheel, while the crushing component is slidably connected to the filter ring.

[0011] In a preferred embodiment of the co-extrusion molding apparatus for the multilayer composite cable protection tube of the present invention, a cutting blade is fixedly installed on the inner wall of the protective shell, and the cutting blade is slidably connected to the filter ring.

[0012] As a preferred embodiment of the co-extrusion molding apparatus for multi-layer composite cable protection pipes according to the present invention, the extrusion assembly includes a conveying shell fixedly installed on a support, a heat-conducting component fixedly installed on the conveying shell, a heating device fixedly installed on the heat-conducting component, and a cutting component fixedly installed on the conveying shell.

[0013] As a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipe of the present invention, wherein: a second conveying auger is fixedly installed at the output end of the driving component, a disintegrating component is fixedly installed on the second conveying auger, a third conveying auger is fixedly installed at the other end of the disintegrating component, an extrusion block is fixedly installed at the other end of the third conveying auger, and the extrusion block, the third conveying auger, the disintegrating component and the second conveying auger are all slidably connected to the conveying shell.

[0014] As a preferred embodiment of the co-extrusion molding device for multi-layer composite cable protection pipes described in this invention, a limiting ring is fixedly installed on the inner wall of the conveying shell, and the limiting ring is slidably connected to the disassembly component.

[0015] As a preferred embodiment of the co-extrusion molding apparatus for multi-layer composite cable protection pipes of the present invention, the cooling assembly includes a water tank fixedly installed on the support, a water pump fixedly installed on the inner wall of the water tank, a cooling pipe fixedly installed at the output end of the water pump, and a spray pipe fixedly installed on the water pump.

[0016] The beneficial effects of this invention are as follows: This invention uses recycled plastic granules as raw materials and achieves the recycling and reuse of waste plastics through an integrated structural design that includes crushing, conveying, melting, extrusion, and synchronous cooling. The entire process requires no manual segmented operation, and all components operate automatically and continuously, forming a complete and efficient automated production line. This not only fully refines and uniformly melts the recycled plastic granules, avoiding problems such as cracking and blistering of finished products due to uneven raw materials, but also significantly improves processing efficiency and reduces labor costs through automated continuous production. At the same time, it realizes the resource-based, harmless, and high-value recycling of waste plastics, combining environmental and economic benefits, and effectively improving the product quality and production stability of cable protection pipes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the working structure of the co-extrusion molding device for multi-layer composite cable protection pipe of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the co-extrusion molding device for multi-layer composite cable protection pipe of the present invention.

[0020] Figure 3 This is a side view of the co-extrusion molding device for multi-layer composite cable protection pipe of the present invention.

[0021] Figure 4 This is a structural diagram of the internal structure of the crushing component of the multi-layer composite cable protection pipe co-extrusion molding device of the present invention.

[0022] Figure 5 This is a cross-sectional structural diagram of the crushing component of the co-extrusion molding device for multi-layer composite cable protection pipes of the present invention.

[0023] Figure 6 This is an exploded view of the crushing component of the co-extrusion molding device for multi-layer composite cable protection pipes of the present invention.

[0024] Figure 7 This is a flowchart illustrating the crushing component of the co-extrusion molding apparatus for multi-layer composite cable protection pipes according to the present invention.

[0025] Figure 8 This is a schematic diagram of the extrusion assembly structure of the multilayer composite cable protection pipe co-extrusion molding device of the present invention.

[0026] Figure 9This is a flowchart of the extrusion assembly of the multilayer composite cable protection pipe co-extrusion molding device of the present invention.

[0027] Figure 10 This is a schematic diagram of the cooling unit structure of the co-extrusion molding device for multi-layer composite cable protection pipe of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Support unit; 2. Crushing unit; 21. Drive component; 22. Crushing assembly; 221. Guide shell; 222. Feeding component; 223. Conveying auger one; 224. Drive wheel; 225. Protective shell; 226. Crushing component; 227. Filter ring; 228. Cutting blade; 229. Guide component; 3. Extrusion unit; 31. Extrusion assembly; 311. Conveying shell; 312. Conveying auger two; 313. Disintegrating component; 314. Limiting ring; 315. Conveying auger three; 316. Extrusion block; 317. Cutting component; 318. Heat-conducting component; 319. Heating equipment; 32. Cooling assembly; 321. Water tank; 322. Water pump; 323. Cooling pipe; 324. Spray pipe. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1, referring to Figure 1 - Figure 3 The first embodiment of the present invention provides a multi-layer composite cable protection pipe co-extrusion molding device. The device includes a support part 1, which includes a crushing unit 2 and an extrusion unit 3 fixedly installed thereon. The crushing unit 2 is used to crush plastic particles, and the extrusion unit 3 is fixedly installed on the crushing unit 2 and connected to the support part 1. It is responsible for conveying, melting and crushing the plastic powder and completing the extrusion molding.

[0031] The crushing unit 2 consists of two parts: a drive member 21 fixedly mounted on the support 1 for driving the crushing assembly 22 to rotate; and a crushing assembly 22 fixedly mounted on the drive member 21 for crushing plastic particles.

[0032] Furthermore, the extrusion unit 3 includes an extrusion assembly 31 and a cooling assembly 32: the extrusion assembly 31 is fixedly mounted on the crushing assembly 22 and is responsible for conveying, heating and melting the crushed plastic; the cooling assembly 32 is fixedly mounted on the other end of the extrusion assembly 31 and both are connected to the support part 1 for rapid cooling of the molten cable protection tube.

[0033] In use, recycled plastic granules are first fed into the crushing component 22. The crushing component 22 is driven by the drive component 21 to transport, squeeze, and crush the plastic granules. This component can not only squeeze and cut the plastic, but also refine it into powder, ensuring a more efficient and smooth melting process. After crushing, the plastic powder is transported to the extrusion component 31. The drive component 21 further cooperates to drive the extrusion component 31 to disperse and heat the internal plastic powder, so that it is fully melted. Under the action of the drive component 21, the molten plastic is extruded into a protective tube by the extrusion component 31. At the same time, the cooling component 32 cools the extruded protective tube simultaneously, accelerating the molding process. This not only fully refines and uniformly melts the recycled plastic granules, avoiding problems such as cracking and bulging of the finished product caused by uneven raw materials, but also greatly improves processing efficiency and reduces labor costs through automated continuous production. At the same time, it realizes the resource-based, harmless, and high-value recycling of waste plastics, which has both environmental and economic benefits, and effectively improves the product quality and production stability of cable protection tubes.

[0034] Example 2, refer to Figure 1 - Figure 8 This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the crushing component 22 includes a guide shell 221 fixedly installed on the support part 1, a feeding component 222 fixedly installed on the guide shell 221, a protective shell 225 fixedly installed on the guide shell 221, and a guide component 229 fixedly installed on the protective shell 225; wherein, the guide shell 221 is used to guide plastic particles, the feeding component 222 is used to feed plastic particles, the protective shell 225 is used to guide crushed plastic particles, and the guide component 229 is fixedly connected to the extrusion component 31 for conveying the crushed plastic particles into the extrusion component 31.

[0035] Compared to Embodiment 1, the further improvement of this embodiment is that a conveying auger 223 is fixedly installed at the output end of the drive component 21. The conveying auger 223 is slidably connected to the guide shell 221 and is used to convey plastic granules.

[0036] Furthermore, a drive wheel 224 is fixedly installed at one end of the conveying auger 223 for engaging and driving the crushing component 226 and the filter ring 227 to rotate; a filter ring 227 is fixedly installed at one end of the drive wheel 224, and the filter ring 227 is rotatably connected to the protective shell 225 for limiting the crushed plastic particles.

[0037] Furthermore, a crushing component 226 is rotatably mounted on the protective shell 225. The crushing component 226 is engaged with the drive wheel 224 and slidably connected to the filter ring 227 for crushing plastic particles.

[0038] Furthermore, a cutting blade 228 is fixedly installed on the inner wall of the protective shell 225. The cutting blade 228 is slidably connected to the filter ring 227 and is used to cut the extruded plastic particles.

[0039] During use, plastic granules are first fed into the feeding component 222. Then, the driving component 21 drives the conveying auger 223 to rotate, so that the plastic granules are conveyed into the filter ring 227. At the same time, the driving wheel 224 drives the filter ring 227 to rotate synchronously along the inner wall of the protective shell 225, turning over the plastic granules that fall into the filter ring 227. The driving wheel 224 also engages the crushing component 226 to rotate in the opposite direction, so that the crushing component 226 slides and rotates along the inner wall of the filter ring 227, squeezing and crushing the plastic granules in the ring.

[0040] The filter ring 227 limits the flow of plastic particles with a diameter smaller than or equal to that of the filter holes. The plastic particles that pass through are then cut by the cutting blade 228 on the inner wall of the protective shell 225, allowing them to undergo extrusion, crushing, cutting, and limiting by the filter ring 227 in sequence. This effectively ensures the diameter of the crushed particles. The plastic particles processed by the cutting blade 228 then pass through the protective shell 225 and the guide component 229 into the extrusion assembly 31. Plastic particles that do not meet the filter hole diameter requirements are intercepted within the filter ring 227. After the filter ring 227 flips, they are again crushed by the crushing component 226 until the crushing requirements are met. This effectively avoids insufficient cutting of plastic particles and the presence of large residual particles, preventing cracks and bulges on the outer wall of the extruded pipe and reducing rework.

[0041] The remaining structure is the same as that in Example 1.

[0042] Example 3, referring to Figure 1 - Figure 10 This is the third embodiment of the present invention, which differs from the second embodiment in that: the extrusion assembly 31 includes: a conveying shell 311 fixedly installed on the support part 1 for guiding the crushed plastic particles; a heat-conducting element 318 fixedly installed on the conveying shell 311 for transferring heat to the plastic particles inside the conveying shell 311; a heating device 319 fixedly installed on the heat-conducting element 318 for heating and melting the plastic powder inside the conveying shell 311; and a cutting element 317 fixedly installed on the conveying shell 311 for cutting the extruded cable protection tube.

[0043] Furthermore, a second conveying auger 312 is fixedly installed at the output end of the drive unit 21 for conveying plastic powder; a dispersing component 313 is fixedly installed on the second conveying auger 312 for dispersing and disturbing the plastic powder; a third conveying auger 315 is fixedly installed at the other end of the dispersing component 313 for conveying and extruding the plastic powder; an extrusion block 316 is fixedly installed at the other end of the third conveying auger 315, and the extrusion block 316, the third conveying auger 315, the dispersing component 313 and the second conveying auger 312 are all slidably connected to the conveying shell 311; a limiting ring 314 is fixedly installed on the inner wall of the conveying shell 311, and the limiting ring 314 is slidably connected to the dispersing component 313 to realize the extrusion molding of the melted plastic powder and complete the forming process of the protective tube.

[0044] Furthermore, the cooling assembly 32 includes a water tank 321 fixedly installed on the support 1 for storing cooling water; a water pump 322 fixedly installed on the inner wall of the water tank 321 for drawing and delivering cooling water; a cooling pipe 323 fixedly installed on the output end of the water pump 322 for spraying cooling to the inside of the cable protection pipe; and a spray pipe 324 fixedly installed on the water pump 322 for spraying cooling to the outside of the cable protection pipe.

[0045] During use, firstly, after the crushing component 22 crushes and cuts the plastic particles, the plastic powder enters the inside of the conveying shell 311; then the driving component 21 synchronously drives the conveying auger 312 to rotate, which in turn moves and conveys the plastic powder inside the conveying shell 311. When the second conveyor auger 312 rotates, the dispersing component 313 rotates synchronously, dispersing the passing plastic powder and re-aggregating it with the help of the limiting ring 314 to prevent the plastic powder from sticking together during the conveying process. The plastic powder dispersed by the dispersing component 313 and aggregated by the limiting ring 314 is conveyed to the third conveyor auger 315 and continues to be conveyed by the third conveyor auger 315. At the same time, the heating device 319 starts to generate heat, which is transferred to the inside of the conveying shell 311 through the heat conduction component 318 to heat and melt the plastic powder conveyed by the third conveyor auger 315, ensuring that the plastic powder is completely melted. The third conveyor auger 315 conveys the molten plastic to the extrusion block 316, where the molten plastic accumulates. As the third conveyor auger 315 continues to convey, the molten plastic is squeezed and extruded along the outer wall of the extrusion block 316, and the forming of the protective tube begins.

[0046] While the extrusion block 316 is being extruded, the water pump 322 in the water tank 321 sprays the extruded protective tube through the cooling pipe 323 and the spray pipe 324 to accelerate its cooling and molding. After the protective tube is extruded, the cutting part 317 cuts it, thus completing the extrusion molding operation of the protective tube.

[0047] The remaining structure is the same as that in Example 2.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A co-extrusion molding apparatus for multi-layer composite cable protection pipes, characterized in that: The support part (1) includes a crushing unit (2) fixedly installed on the support part (1) and an extrusion unit (3) fixedly installed on the crushing unit (2), and the extrusion unit (3) is fixedly connected to the support part (1); The crushing unit (2) includes a drive member (21) fixedly mounted on the support (1) and a crushing assembly (22) fixedly mounted on the drive member (21). The extrusion unit (3) includes an extrusion assembly (31) fixedly mounted on the crushing assembly (22) and a cooling assembly (32) fixedly mounted on the other end of the extrusion assembly (31), and both the cooling assembly (32) and the extrusion assembly (31) are fixedly connected to the support (1).

2. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 1, characterized in that: The crushing assembly (22) includes a guide shell (221) fixedly mounted on the support (1), a feeding component (222) fixedly mounted on the guide shell (221), a protective shell (225) fixedly mounted on the guide shell (221), and a guide component (229) fixedly mounted on the protective shell (225), and the guide component (229) is fixedly connected to the extrusion assembly (31).

3. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 2, characterized in that: The output end of the drive unit (21) is fixedly installed with a conveying auger (223), and the conveying auger (223) is slidably connected to the guide shell (221).

4. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 3, characterized in that: A drive wheel (224) is fixedly installed at one end of the conveying auger (223), and a filter ring (227) is fixedly installed at one end of the drive wheel (224), and the filter ring (227) is rotatably connected to the protective shell (225).

5. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 4, characterized in that: A crusher (226) is rotatably mounted on the protective shell (225), and the crusher (226) is engaged with the drive wheel (224), while the crusher (226) is slidably connected to the filter ring (227).

6. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 5, characterized in that: A cutting blade (228) is fixedly installed on the inner wall of the protective shell (225), and the cutting blade (228) is slidably connected to the filter ring (227).

7. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 6, characterized in that: The extrusion assembly (31) includes a conveyor shell (311) fixedly mounted on the support (1), a heat-conducting element (318) fixedly mounted on the conveyor shell (311), a heating device (319) fixedly mounted on the heat-conducting element (318), and a cutting element (317) fixedly mounted on the conveyor shell (311).

8. The co-extrusion molding apparatus for multi-layer composite cable protection pipes according to claim 7, characterized in that: The output end of the drive unit (21) is fixedly installed with a second conveying auger (312), a disintegrating component (313) is fixedly installed on the second conveying auger (312), a third conveying auger (315) is fixedly installed on the other end of the disintegrating component (313), and a pressing block (316) is fixedly installed on the other end of the third conveying auger (315). The pressing block (316), the third conveying auger (315), the disintegrating component (313) and the second conveying auger (312) are all slidably connected to the conveying shell (311).

9. The multi-layer composite cable protection pipe co-extrusion molding apparatus according to claim 8, characterized in that: A limiting ring (314) is fixedly installed on the inner wall of the conveying shell (311), and the limiting ring (314) is slidably connected to the disassembly component (313).

10. The co-extrusion molding apparatus for multi-layer composite cable protection pipes according to claim 9, characterized in that: The cooling assembly (32) includes a water tank (321) fixedly installed on the support (1), a water pump (322) fixedly installed on the inner wall of the water tank (321), a cooling pipe (323) fixedly installed on the output end of the water pump (322), and a spray pipe (324) fixedly installed on the water pump (322).

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