Processing device for plastic layer on surface of cable

Abstract

The utility model discloses a cable surface plastic layer processing device, which comprises a shaping cabin, a water cooling cabin and an air cooling cabin, the shaping cabin and the air cooling cabin are respectively arranged at two ends of the water cooling cabin through flange plates, spiral distribution pipes are uniformly arranged on the inner side of the water cooling cabin, a cooling water tank is arranged at the bottom of the water cooling cabin, and the spiral distribution pipes are connected with the cooling water tank. A circulating water pump is installed in the cooling water tank, the output end of the circulating water pump is fixedly connected with the input end of a spiral distribution pipe through a guide pipe, and spraying heads are evenly arranged on the inner wall of the spiral distribution pipe. According to the utility model, the coated cable enters the water cooling cabin immediately, and the spiral distribution pipes uniformly arranged on the inner side of the water cooling cabin are provided with the spray heads, so that the plastic layer can be cooled and cured quickly under the action of cooling water. Therefore, the surface of the plastic layer is quickly cured, and the problem of deformation caused by non-uniform cooling is avoided, so that the surface quality and the production efficiency of the cable are improved.

Description

Technical Field

[0001] This utility model relates to the field of cable processing and cooling technology, specifically to a processing device for the plastic layer on the surface of cables. Background Technology

[0002] As the core carrier of power transmission and signal conduction, the processing quality of the surface plastic layer of cables directly affects their insulation performance, mechanical strength, and service life. With the development of new energy vehicles, high-end electronic equipment, and other fields, the market is placing higher demands on the temperature resistance, abrasion resistance, and insulation reliability of cables. Currently, the processing of the surface plastic layer of cables typically employs an extrusion coating process, where the plastic layer is molded and then cooled and cured to achieve bonding between the plastic layer and the cable body.

[0003] Traditional processing equipment often relies on direct extrusion molding using molds, lacking a subsequent shaping process, resulting in poor adhesion between the plastic layer and the cable body. For example, when the cable diameter fluctuates or the extrusion pressure changes, defects such as eccentricity and air bubbles can easily appear in the plastic layer, affecting insulation performance. Although some equipment is equipped with pressure adjustment structures, they often use fixed molds or a single roller for pressure application, which cannot adapt to the dynamic adjustment requirements of cables with different diameters, resulting in insufficient shaping accuracy.

[0004] Single cooling method is inefficient: Existing devices generally use single-stage water cooling or air cooling. Water cooling is prone to causing the surface of the plastic layer to become brittle due to a sudden drop in temperature (e.g., the probability of cracking increases by 30% when the cooling temperature difference of PE material is >15℃). Air cooling has the problem of slow cooling speed (curing time is extended by 50%).

[0005] Poor cooling uniformity: Traditional water cooling tanks mostly adopt a direct flow water design, which results in insufficient water flow disturbance, leading to a temperature difference of 10-15℃ on the surface of the cable, and internal stress concentration that is prone to cracking; air cooling devices, due to uneven airflow distribution, cause inconsistent curing of the plastic layer (such as the outer layer curing while the inner layer is not fully crystallized).

[0006] Existing devices lack a drying mechanism after cooling, leaving water stains on the cable surface. This not only causes adhesion during subsequent winding but may also lead to moisture absorption of the insulation layer. Although some devices have added drying components, they cannot completely remove moisture from the gaps, especially for irregularly shaped or multi-core cables. Utility Model Content

[0007] The purpose of this invention is to provide a processing device for the plastic layer on the surface of cables, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a processing device for a plastic layer on the surface of a cable, comprising a shaping chamber, a water-cooled chamber, and an air-cooled chamber. The shaping chamber and the air-cooled chamber are respectively disposed at both ends of the water-cooled chamber via flanges. Adjusting seats are evenly arranged on the outer side of the shaping chamber. A threaded sleeve is provided on the top of the adjusting seat. A threaded rod is provided on the inner side of the threaded sleeve. A spring is provided at the top of the threaded rod via a support plate. A shaping roller is installed at the top of the spring via a U-shaped frame.

[0009] The inner side of the water-cooled chamber is uniformly provided with spiral distribution pipes, and the bottom of the water-cooled chamber is provided with a cooling water tank. A circulating water pump is installed inside the cooling water tank, and the output end of the circulating water pump is fixedly connected to the input end of the spiral distribution pipe through a conduit. Spray heads are uniformly provided on the inner wall of the spiral distribution pipe.

[0010] The air-cooled chamber has annular distribution pipes arranged in parallel inside, and a cold air box is provided at the bottom of the air-cooled chamber. An air pump is installed inside the cold air box. The output end of the air pump is fixedly connected to the input end of the annular distribution pipe through a conduit. Air jet holes are evenly arranged on the inner wall of the annular distribution pipe.

[0011] Preferably, the bottom of both the water-cooled chamber and the air-cooled chamber is evenly provided with supporting rollers for supporting the cable body, and the bottom of the water-cooled chamber is evenly provided with water return holes, and the top of the cooling water tank below the water return holes is provided with a sinking groove, the bottom of the sinking groove being connected to the inside of the cooling water tank.

[0012] Preferably, a filter element is provided inside the sinking trough, and an encapsulation panel is detachably installed on one side of the cooling water tank at the position corresponding to the sinking trough by bolts.

[0013] Preferably, a semiconductor refrigeration chip is provided at the bottom of the cold air box, and the cold end of the semiconductor refrigeration chip extends into the interior of the cold air box. A temperature sensor is also installed on the inner wall of the cold air box.

[0014] Preferably, both sides of the inner wall of the adjusting seat are provided with sliding grooves, and both sides of the support plate are provided with sliders extending into the sliding grooves.

[0015] Preferably, a telescopic rod is also provided between the support plate on the inner side of the spring and the U-shaped frame.

[0016] Preferably, the threaded sleeve is connected to the adjusting seat via a bearing, and a handwheel is provided at the top of the threaded sleeve.

[0017] This utility model relates to a processing device for a plastic layer on the surface of cables, which has significant advantages over the prior art, as detailed below:

[0018] 1. This device features a shaping chamber at the rear of the mold, which applies uniform pressure to the coated cable using shaping rollers, ensuring a tight fit between the plastic layer and the cable body. This effectively solves the problem of poor adhesion between the plastic layer and the cable in existing technologies, significantly improving the shaping effect on the cable surface and product quality.

[0019] 2. The coated cable immediately enters the water-cooling chamber. The chamber contains evenly spaced spiral distribution pipes equipped with spray nozzles, which rapidly cool and solidify the plastic layer under the action of cooling water. This ensures rapid surface curing of the plastic layer, preventing deformation caused by uneven cooling, thereby improving the surface quality of the cable and production efficiency.

[0020] 3. An air-cooled chamber located at the rear of the water-cooled chamber provides secondary cooling for the cable. Evenly spaced air jets on the annular distribution pipes inside the air-cooled chamber uniformly blow cool air, ensuring the complete curing of the plastic layer on the coated cable. This dual cooling mechanism not only ensures thorough curing of the plastic layer but also improves the overall performance and stability of the cable. Simultaneously, the air-cooled chamber dries any residual moisture on the surface of the water-cooled chamber, ensuring the cable surface is dry after discharge. This effectively prevents secondary contamination or quality problems caused by residual moisture on the cable surface. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall internal cross-sectional structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the shaping chamber of this utility model;

[0023] Figure 3 This is a schematic diagram of the air-cooled cabin structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the spiral distribution tube structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the main structure of this utility model;

[0026] In the diagram: 1. Shaping chamber; 2. Shaping roller; 3. Adjustment seat; 4. Flange; 5. Water-cooled chamber; 6. Support roller; 7. Spiral distribution pipe; 8. Return water hole; 9. Air-cooled chamber; 10. Annular distribution pipe; 11. Cold air box; 12. Air pump; 13. Semiconductor refrigeration chip; 14. Temperature sensor; 15. Cooling water tank; 16. Filter core; 17. Circulating water pump; 18. Sink tank; 19. Jet nozzle; 20. Encapsulation panel; 21. Spray head; 22. Telescopic rod; 23. Spring; 24. Slider; 25. Threaded rod; 26. Support plate; 27. U-shaped frame; 28. Slide groove; 29. ​​Threaded sleeve; 30. Handwheel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figure 1-5 An embodiment of this utility model provides a processing device for a plastic layer on the surface of a cable, comprising a shaping chamber 1, a water-cooled chamber 5, and an air-cooled chamber 9. The shaping chamber 1 and the air-cooled chamber 9 are respectively disposed at both ends of the water-cooled chamber 5 via flanges 4. Adjusting seats 3 are evenly disposed on the outer side of the shaping chamber 1. A threaded sleeve 29 is disposed on the top of the adjusting seat 3. A threaded rod 25 is disposed on the inner side of the threaded sleeve 29. A spring 23 is disposed on the top of the threaded rod 25 via a support plate 26. A shaping roller 2 is mounted on the top of the spring 23 via a U-shaped frame 27.

[0029] Both sides of the inner wall of the adjusting seat 3 are provided with sliding grooves 28, and both sides of the support plate 26 are provided with sliders 24 extending into the sliding grooves 28.

[0030] A telescopic rod 22 is also provided between the support plate 26 on the inner side of the spring 23 and the U-shaped frame 27.

[0031] The threaded sleeve 29 is connected to the adjusting seat 3 via a bearing, and a handwheel 30 is provided at the top of the threaded sleeve 29.

[0032] Multiple adjustment seats 3 are evenly arranged on the outer side of the shaping chamber 1. Each adjustment seat 3 has a threaded sleeve 29 on its top and a threaded rod 25 on its inner side. A spring 23 is provided at the top of the threaded rod 25 via a support plate 26, and a shaping roller 2 is mounted at the top of the spring 23 via a U-shaped frame 27.

[0033] Specifically, the inner walls of the adjusting seat 3 are provided with grooves 28 on both sides, and the support plate 26 is provided with sliders 24 extending into the grooves 28 on both sides. The purpose is to ensure that the shaping roller 2 can move smoothly within the grooves 28 when subjected to the elastic force of the spring 23, thereby achieving uniform pressing of the plastic layer on the surface of the cable.

[0034] A telescopic rod 22 is also provided between the support plate 26 inside the spring 23 and the U-shaped frame 27. The function of the telescopic rod 22 is to further stabilize the position of the forming roller 2, prevent it from generating excessive vibration during high-speed operation, and ensure the stability of the processing.

[0035] The threaded sleeve 29 is connected to the adjusting seat 3 via a bearing, which reduces friction during rotation and improves adjustment flexibility. A handwheel 30 is provided at the top of the threaded sleeve 29, allowing the operator to adjust the up-down position of the threaded rod 25 by rotating the handwheel 30, thereby adjusting the clamping force of the shaping roller 2 on the cable surface.

[0036] Spiral distribution pipes 7 are evenly arranged on the inner side of the water-cooled chamber 5, and a cooling water tank 15 is provided at the bottom of the water-cooled chamber 5. A circulating water pump 17 is installed inside the cooling water tank 15, and the output end of the circulating water pump 17 is fixedly connected to the input end of the spiral distribution pipe 7 through a conduit. Spray heads 21 are evenly arranged on the inner wall of the spiral distribution pipe 7.

[0037] The bottom of the water-cooled chamber 5 is evenly provided with return water holes 8, and the top of the cooling water tank 15 below the return water holes 8 is provided with a sinking groove 18, the bottom of the sinking groove 18 is connected to the inside of the cooling water tank 15.

[0038] The interior of the sink 18 is equipped with a filter element 16, and a sealing panel 20 is detachably installed on one side of the cooling water tank 15 at the position corresponding to the sink 18 via bolts.

[0039] Spiral distribution pipes 7 are evenly arranged inside the water-cooled chamber 5. The spiral distribution pipes 7 are arranged in a spiral shape, with their inlet end located at the bottom of the water-cooled chamber 5 and their outlet end located at the top of the water-cooled chamber 5. The spiral distribution pipes 7 are made of corrosion-resistant stainless steel, which has good thermal conductivity and pressure resistance.

[0040] The bottom of the water-cooled chamber 5 is equipped with a cooling water tank 15. The cooling water tank 15 has a rectangular structure and ample internal space to hold a large amount of cooling water. The cooling water tank 15 is made of high-strength plastic or stainless steel, which has good sealing properties and corrosion resistance.

[0041] A circulating water pump 17 is installed inside the cooling water tank 15. The circulating water pump 17 is fixedly installed at the bottom of the cooling water tank 15, and its output end is fixedly connected to the input end of the spiral distribution pipe 7 through a conduit. The function of the circulating water pump 17 is to pump the cooling water in the cooling water tank 15 to the spiral distribution pipe 7 to ensure that the cooling water circulates within the water-cooled chamber 5.

[0042] Spray heads 21 are evenly distributed along the inner wall of the spiral distribution pipe 7. The spray heads 21 are evenly distributed along the length of the spiral distribution pipe 7, with their nozzles facing the inner side of the water-cooled chamber 5. The function of the spray heads 21 is to evenly spray the cooling water delivered by the circulating water pump 17 onto the inner wall of the water-cooled chamber 5, enhancing the cooling effect. The spray heads 21 are made of corrosion-resistant plastic or metal, possessing good wear resistance and pressure resistance.

[0043] The bottom of the water-cooled chamber 5 is evenly provided with return water holes 8. The return water holes 8 are distributed above the cooling water tank 15, and their function is to return the cooling water in the water-cooled chamber 5 to the cooling water tank 15. The diameter of the return water holes 8 is moderate, which can ensure the smooth return of cooling water and prevent impurities from entering the cooling water tank 15.

[0044] A recessed trough 18 is provided on the top of the cooling water tank 15 below the return water hole 8. The recessed trough 18 has a rectangular structure, and its bottom is connected to the inside of the cooling water tank 15. The function of the recessed trough 18 is to collect the cooling water flowing back from the return water hole 8 and to guide the cooling water into the cooling water tank 15 through the communication port at its bottom.

[0045] A filter element 16 is installed inside the settling tank 18. The filter element 16 is fixedly installed at the bottom of the settling tank 18, and its function is to filter impurities in the cooling water flowing back from the return water hole 8, ensuring the cleanliness of the cooling water. The filter element 16 is made of high-performance filter material, which has good filtration effect and corrosion resistance.

[0046] A sealing panel 20 is detachably installed on one side of the cooling water tank 15, corresponding to the position of the sink 18, via bolts. The sealing panel 20 has good sealing and corrosion resistance. The function of the sealing panel 20 is to seal one side of the cooling water tank 15, facilitating maintenance and replacement of the filter element 16.

[0047] The air-cooled chamber 9 has annular distribution pipes 10 arranged in parallel inside, and a cold air box 11 is provided at the bottom of the air-cooled chamber 9. An air pump 12 is installed inside the cold air box 11. The output end of the air pump 12 is fixedly connected to the input end of the annular distribution pipe 10 through a conduit. The inner wall of the annular distribution pipe 10 is uniformly provided with jet holes 19.

[0048] A semiconductor cooling chip 13 is provided at the bottom of the cold air box 11, and the cold end of the semiconductor cooling chip 13 extends into the interior of the cold air box 11. A temperature sensor 14 is also installed on the inner wall of the cold air box 11.

[0049] Both the bottom of the water-cooled chamber 5 and the air-cooled chamber 9 are evenly provided with support rollers 6 for supporting the cable body.

[0050] Annular distribution pipes 10 are arranged in parallel inside the air-cooled compartment 9. The annular distribution pipes 10 are made of high-strength corrosion-resistant material to ensure their stability and reliability during long-term use. Air jet holes 19 are evenly arranged on the inner wall of the annular distribution pipes 10 to ensure that the cool air can be evenly distributed to all parts of the air-cooled compartment 9.

[0051] A cold air box 11 is installed at the bottom of the air-cooled compartment 9. The cold air box 11 adopts a sealed design and has an air pump 12 installed inside. The output end of the air pump 12 is fixedly connected to the input end of the annular distribution pipe 10 through a conduit. The conduit is made of low-temperature resistant material to ensure that no heat exchange occurs during the transmission of cold air. The air pump 12 is a high-efficiency and energy-saving type, which can deliver cold air to the annular distribution pipe 10 in a short time.

[0052] A thermoelectric cooler 13 is installed at the bottom of the cold air chamber 11, with the cold end of the thermoelectric cooler 13 extending into the interior of the cold air chamber 11. The hot end of the thermoelectric cooler 13 exchanges heat with the external environment through a heat sink made of a high thermal conductivity material, and is cooled by a fan.

[0053] A temperature sensor 14 is also installed on the inner wall of the cold air chamber 11. The temperature sensor 14 is a high-precision type, which can monitor the temperature changes inside the cold air chamber 11 in real time and transmit the data to the control system for temperature adjustment. The temperature sensor 14 is installed close to the cold end of the thermoelectric cooler 13 to ensure measurement accuracy.

[0054] The bottom of the water-cooled chamber 5 is evenly equipped with support rollers 6 to support the cable body. The support rollers 6 are made of wear-resistant material with a smooth surface to ensure that the cable is not damaged during operation. The spacing of the support rollers 6 is reasonably set according to the diameter of the cable to ensure stable support of the cable.

[0055] In practical applications, the air-cooled chamber 9 and the water-cooled chamber 5 can be used in combination to achieve efficient cooling of the cables. The cables first enter the water-cooled chamber 5, where they undergo initial cooling through a cooling water circulation system, and then enter the air-cooled chamber 9, where the temperature is further reduced by cool air. This dual cooling method can significantly improve the heat dissipation efficiency of the cables and extend their service life.

[0056] When this application embodiment is used,

[0057] Rotate the handwheel 30 to drive the threaded rod 25 up and down through the threaded sleeve 29, and adjust the initial height of the shaping roller 2 according to the cable diameter: rotate the handwheel clockwise to lower the threaded rod until the shaping roller 2 makes slight contact with the cable body.

[0058] The cable, coated with a plastic layer, is inserted into the front end of the shaping chamber 1, positioning the cable body at the center of the multiple shaping rollers 2. During cable movement, the shaping rollers 2, under the elastic force of springs 23, adhere tightly to the surface of the plastic layer. Fine-tuning via threaded rods 25 compensates for cable diameter fluctuations, ensuring a tight fit of the plastic layer. Support plate 26 slides within groove 28 via slider 24, accommodating slight cable movement, while telescopic rod 22 prevents vibration during high-speed operation of the shaping rollers 2.

[0059] After the cable enters the water-cooled chamber 5, the circulating water pump 17 pumps water (20-30℃) from the cooling water tank 15 into the spiral distribution pipe 7. The water is then sprayed in a mist onto the cable surface through the spray nozzles 21, quickly solidifying the plastic layer. The water flows along the spiral path of the spiral distribution pipe 7, enhancing heat exchange efficiency. The cooled water falls into the sink trough 18 through the return water hole 8, where the filter element 16 intercepts impurities and returns to the cooling water tank 15, forming a closed-loop circulation. Support rollers 6 support the cable, preventing contact with the inner wall of the water-cooled chamber and ensuring uniform cooling.

[0060] The cable enters the air-cooled chamber 9 from the water-cooled chamber 5. Cool air from the annular distribution pipe 10 is evenly blown onto the cable through the jet nozzles 19, solidifying the inner layer of the plastic and drying surface water. The semiconductor cooling chip 13 operates continuously, and the temperature sensor 14 provides real-time feedback on the temperature inside the air-cooled chamber 11. When the temperature exceeds the limit, cooling compensation is automatically activated to ensure effective cooling. The air pump 12 delivers cool air, creating turbulence to enhance heat dissipation, ultimately cooling the plastic layer.

[0061] While providing secondary cooling, the air-cooled chamber 9 also dries the surface of the water-cooled chamber 5, ensuring the cable is dry after discharge. This effectively prevents secondary contamination or quality problems caused by residual moisture on the cable surface.

[0062] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0065] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A processing apparatus for a plastic layer on the surface of a cable, comprising a shaping chamber (1), a water-cooled chamber (5), and an air-cooled chamber (9), characterized in that: The shaping chamber (1) and the air-cooled chamber (9) are respectively set at both ends of the water-cooled chamber (5) via flanges (4), and the outer side of the shaping chamber (1) is uniformly provided with adjustment seats (3), the top of the adjustment seat (3) is provided with a threaded sleeve (29), the inner side of the threaded sleeve (29) is provided with a threaded rod (25), the top of the threaded rod (25) is provided with a spring (23) via a support plate (26), and the top of the spring (23) is installed with a shaping roller (2) via a U-shaped frame (27); The water-cooled chamber (5) is uniformly provided with spiral distribution pipes (7) on its inner side, and a cooling water tank (15) is provided at the bottom of the water-cooled chamber (5). A circulating water pump (17) is installed inside the cooling water tank (15), and the output end of the circulating water pump (17) is fixedly connected to the input end of the spiral distribution pipe (7) through a conduit. Spray heads (21) are uniformly provided on the inner wall of the spiral distribution pipe (7). The air-cooled chamber (9) has an annular distribution pipe (10) arranged in parallel inside, and a cold air box (11) is provided at the bottom of the air-cooled chamber (9). An air pump (12) is installed inside the cold air box (11). The output end of the air pump (12) is fixedly connected to the input end of the annular distribution pipe (10) through a conduit. The inner wall of the annular distribution pipe (10) is uniformly provided with jet holes (19).

2. The processing apparatus for a plastic layer on the surface of a cable according to claim 1, characterized in that: Both the water-cooled chamber (5) and the air-cooled chamber (9) are uniformly provided with support rollers (6) for supporting the cable body. The bottom of the water-cooled chamber (5) is uniformly provided with return water holes (8). The top of the cooling water tank (15) below the return water holes (8) is provided with a sinking groove (18). The bottom of the sinking groove (18) is connected to the inside of the cooling water tank (15).

3. The processing apparatus for a plastic layer on the surface of a cable according to claim 2, characterized in that: The sink trough (18) is equipped with a filter core (16), and a sealing panel (20) is detachably installed on one side of the cooling water tank (15) at the position corresponding to the sink trough (18) by bolts.

4. The processing apparatus for a plastic layer on the surface of a cable according to claim 1, characterized in that: The bottom of the cold air box (11) is provided with a semiconductor cooling chip (13), and the cold end of the semiconductor cooling chip (13) extends into the interior of the cold air box (11). A temperature sensor (14) is also installed on the inner wall of the cold air box (11).

5. The processing apparatus for a plastic layer on the surface of a cable according to claim 1, characterized in that: The inner wall of the adjusting seat (3) is provided with sliding grooves (28) on both sides, and the support plate (26) is provided with sliders (24) extending into the sliding grooves (28) on both sides.

6. The device for processing a plastic layer on the surface of a cable according to claim 1, characterized in that: A telescopic rod (22) is also provided between the support plate (26) inside the spring (23) and the U-shaped frame (27).

7. The processing apparatus for a plastic layer on the surface of a cable according to claim 1, characterized in that: The threaded sleeve (29) is connected to the adjusting seat (3) via a bearing, and a handwheel (30) is provided at the top of the threaded sleeve (29).

Images