Extrusion device for electric vehicle cable

Abstract

The utility model discloses an electric vehicle cable extrusion device, which comprises an extruder body, a cable extrusion port is arranged on the outer wall of one side of the extruder body, a traction box is fixed on the outer wall of the extruder body on the outer side of the cable extrusion port, and a shaping cable sleeve is arranged on one side of the traction box. The interior of the shaping cable sleeve is provided with shaping cavities at equal intervals, and the interior of the shaping cable sleeve between the shaping cavities is provided with a first cooling air duct, a second cooling air duct and a third cooling air duct. And a first cooling air cavity, a second cooling air cavity and a third cooling air cavity are respectively arranged in the shaping cable sleeve on the outer sides of the first cooling air duct, the second cooling air duct and the third cooling air duct. According to the utility model, a multi-air-duct structure is adopted, and the airflow temperature is gradually reduced, so that stepped cooling is realized, the shearing stress and thermal stress of the cable can be reduced, the cable shrinkage condition is reduced, and the extrusion quality of the cable is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cable processing technology, specifically to an extrusion device for electric vehicle cables. Background Technology

[0002] The main functions of electric vehicle cables include transmitting power, controlling signals, and enabling various functions of the electric vehicle. Electric vehicle cables mainly include power lines, control lines, and motor lines. Cable extruders are one of the important pieces of equipment in cable production. Cable extruders use a screw of a specific shape that rotates in a heated barrel, forcing plastic fed from the hopper forward. This process uniformly plasticizes (melts) the plastic, which is then extruded through the die head and different shaped molds into continuous plastic layers of various desired shapes, which are then extruded onto the wire core and cable.

[0003] Currently, cables need to be cooled and shaped after extrusion. However, if the cables are directly cooled at low temperatures, the insulation layer will shrink due to shear stress and thermal stress, resulting in substandard cable quality. Therefore, improvements are urgently needed. Utility Model Content

[0004] The purpose of this invention is to provide an extrusion device for electric vehicle cables to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an extrusion device for electric vehicle cables, comprising an extruder body, a cable extrusion port being provided on the outer wall of one side of the extruder body, a traction box being fixed on the outer wall of the extruder body outside the cable extrusion port, and an upper traction roller and a lower traction roller being installed inside the traction box via a servo motor, a shaping cable sleeve being provided on one side of the traction box, and shaping cavities being provided inside the shaping cable sleeve at equal intervals, a first cooling air duct, a second cooling air duct, and a third cooling air duct being provided inside the shaping cable sleeve between the shaping cavities, and the first cooling air duct, the second cooling air duct, and the third cooling air duct being connected to each other via a first connecting channel and a second connecting channel, respectively, a first cooling air chamber, a second cooling air chamber, and a third cooling air chamber being provided inside the shaping cable sleeve outside the first cooling air duct, the second cooling air duct, and the third cooling air duct, respectively, and the first cooling air chamber, the second cooling air chamber, and the third cooling air chamber being connected to the first cooling air duct, the second cooling air duct, and the third cooling air duct via air outlets.

[0006] Preferably, an air outlet pipe and an air inlet pipe are respectively installed on both sides of the top of the shaped cable sleeve, and the air outlet pipe and the air inlet pipe are respectively connected to the first cooling air cavity and the third cooling air cavity.

[0007] Preferably, three temperature sensors are installed at the top of the shaped cable sleeve, and the detection ends of the temperature sensors extend into the interior of the first cooling air cavity, the second cooling air cavity, and the third cooling air cavity, respectively.

[0008] Preferably, the inner wall of the shaping cable sleeve on the outer side of the shaping cavity is provided with equally spaced drive grooves, and a small cylinder is installed inside the drive groove to facilitate the adjustment of the position of the ball bearing.

[0009] Preferably, the output end of the small cylinder is fixed with a ball bearing shell, and the ball bearing shell is provided with a ball bearing inside, which facilitates the limiting and guiding of the cable.

[0010] Preferably, the shaping cable sleeve has a cylindrical hollow structure, and both ends of the shaping cable sleeve are open.

[0011] Preferably, the first cooling air cavity, the second cooling air cavity, and the third cooling air cavity are all annular structures, and the temperature in the first cooling air cavity, the second cooling air cavity, and the third cooling air cavity decreases step by step.

[0012] Preferably, a dust cover is fixed between the traction box and the shaping cable sleeve, and both ends of the dust cover are connected to the cable outlet and the shaping cable sleeve respectively. The cross-section of the dust cover is trapezoidal, which serves to protect the cable from dust.

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

[0014] The cable sleeve is internally equipped with a first cooling air duct, a second cooling air duct, and a third cooling air duct, and correspondingly has a first cooling air chamber, a second cooling air chamber, and a third cooling air chamber. These three cooling air chambers are connected to the first, second, and third cooling air ducts via air outlets. Airflow close to room temperature is delivered from the air inlet pipe to the third cooling air chamber. The airflow enters the third cooling air duct to cool the cable. After heat exchange, the airflow's temperature rises and it enters the second cooling air chamber through the second connecting channel, then enters the second cooling air duct to cool the cable. After further heat exchange, the airflow enters the third cooling air chamber through the first connecting channel. The airflow enters the first cooling air duct from the first cooling air chamber to cool the cable. The airflow, close to room temperature, is transferred from the third cooling air duct to the second and first cooling air ducts. This results in the highest airflow temperature in the first cooling air duct, which is close to the initial surface temperature of the cable. The airflow temperature decreases in the second cooling air duct, and the lowest airflow temperature is in the third cooling air duct. This multi-duct structure, with its gradually decreasing airflow temperature, reduces shear stress and thermal stress on the cable, minimizes cable shrinkage, and ensures the extrusion quality of the cable. Furthermore, the airflow exchanges heat with the cable in the opposite direction, utilizing the cable's heat to achieve stepped cooling. The ingenious structural design is energy-saving and environmentally friendly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is an enlarged cross-sectional view of the shaped cable sleeve of this utility model;

[0017] Figure 3 This is an enlarged side view sectional diagram of the shaped cable sleeve of this utility model;

[0018] Figure 4 This is an enlarged structural schematic diagram of the traction box of this utility model;

[0019] Figure 5 This is a side view of the traction box structure of this utility model.

[0020] In the diagram: 1. Extruder body; 2. Cable extrusion port; 3. Traction box; 4. Cable outlet; 5. Shaped cable sleeve; 501. Air outlet; 502. Temperature sensor; 6. Shaping cavity; 7. First cooling air duct; 8. Air outlet pipe; 9. First cooling air chamber; 10. First connecting channel; 11. Second cooling air duct; 12. Second cooling air chamber; 13. Second connecting channel; 14. Third cooling air duct; 15. Third cooling air chamber; 16. Air inlet pipe; 17. Drive slot; 18. Small cylinder; 19. Ball bearing shell; 20. Ball bearing body; 21. Upper traction roller; 22. Lower traction roller; 23. Dust cover; 24. Servo motor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. 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.

[0023] Please see Figure 1-5An embodiment of the present invention provides an extrusion device for electric vehicle cables, including an extruder body 1, a cable extrusion port 2 is provided on the outer wall of one side of the extruder body 1, a traction box 3 is fixed on the outer wall of the extruder body 1 outside the cable extrusion port 2, and an upper traction roller 21 and a lower traction roller 22 are installed inside the traction box 3 through a servo motor 24.

[0024] Specifically, the cable is extruded from the cable extrusion port 2 on the outer wall of the extruder body 1, and the servo motor 24 inside the traction box 3 drives the upper traction roller 21 and the lower traction roller 22 to rotate in opposite directions to pull the cable.

[0025] A shaping cable sleeve 5 is provided on one side of the traction box 3. The shaping cable sleeve 5 is provided with equally spaced shaping cavities 6. The shaping cable sleeve 5 between the shaping cavities 6 is provided with a first cooling air duct 7, a second cooling air duct 11, and a third cooling air duct 14. The first cooling air duct 7, the second cooling air duct 11, and the third cooling air duct 14 are connected to each other through a first connecting channel 10 and a second connecting channel 13, respectively. The shaping cable sleeve 5 outside the first cooling air duct 7, the second cooling air duct 11, and the third cooling air duct 14 is provided with a first cooling air cavity 9, a second cooling air cavity 12, and a third cooling air cavity 15, respectively. The first cooling air cavity 9, the second cooling air cavity 12, and the third cooling air cavity 15 are connected to the first cooling air duct 7, the second cooling air duct 11, and the third cooling air duct 14 through an air outlet 501.

[0026] Specifically, the cable passes through the inside of the shaped cable sleeve 5. The shaped cable sleeve 5 has a first cooling air duct 7, a second cooling air duct 11, and a third cooling air duct 14, and correspondingly, a first cooling air cavity 9, a second cooling air cavity 12, and a third cooling air cavity 15. The first cooling air cavity 9, the second cooling air cavity 12, and the third cooling air cavity 15 are connected to the first cooling air duct 7, the second cooling air duct 11, and the third cooling air duct 14 through an air outlet 501. Airflow close to room temperature is delivered from the air inlet pipe 16 to the third cooling air cavity 15. The airflow enters the third cooling air duct 14 to cool the cable. After heat exchange, the airflow temperature rises and enters the second cooling air cavity 12 through the second connecting channel 13. The airflow then enters the second cooling duct 11 to cool the cable. After heat exchange, the airflow enters the first cooling air chamber 9 through the first connecting channel 10, and then enters the first cooling duct 7 to cool the cable. The airflow, which is close to room temperature, is transferred from the third cooling duct 14 to the second cooling duct 11 and the first cooling duct 7. This results in the highest airflow temperature in the first cooling duct 7, which is close to the initial surface temperature of the cable. The airflow temperature in the second cooling duct 11 decreases, and the airflow temperature in the third cooling duct 14 is the lowest. By adopting a multi-duct structure and setting the airflow temperature to gradually decrease, the shear stress and thermal stress of the cable can be reduced, the cable shrinkage can be reduced, and the extrusion quality of the cable can be guaranteed.

[0027] Furthermore, the airflow exchanges heat with the cable in the opposite direction, utilizing the heat from the cable to achieve stepped cooling. The structure is ingeniously designed, energy-saving and environmentally friendly.

[0028] The top of the shaped cable sleeve 5 is equipped with an air outlet pipe 8 and an air inlet pipe 16 on both sides, and the air outlet pipe 8 and the air inlet pipe 16 are respectively connected to the first cooling air chamber 9 and the third cooling air chamber 15.

[0029] Three temperature sensors 502 are installed at the top of the shaping cable sleeve 5, and the detection ends of the temperature sensors 502 extend into the interior of the first cooling air cavity 9, the second cooling air cavity 12, and the third cooling air cavity 15, respectively.

[0030] The inner wall of the shaping cable sleeve 5 on the outside of the shaping cavity 6 is provided with equally spaced drive grooves 17, and a small cylinder 18 is installed inside the drive groove 17.

[0031] The output end of the small cylinder 18 is fixed with a ball housing 19, and a ball body 20 is provided inside the ball housing 19.

[0032] Specifically, when the cable passes through the shaping cavity 6, the small cylinder 18 inside the drive groove 17 drives the ball housing 19 to move closer to the cable. The ball 20 is in close contact with the outer surface of the cable. The ball 20 rolls in coordination with the movement of the cable. By limiting and shaping the cable, the tightness between the cable core and the insulation layer can be improved, thereby improving the stability and reliability of the cable.

[0033] The shaping cable sleeve 5 has a cylindrical hollow structure, and both ends of the shaping cable sleeve 5 are open.

[0034] The first cooling air cavity 9, the second cooling air cavity 12, and the third cooling air cavity 15 are all annular structures, and the temperature inside the first cooling air cavity 9, the second cooling air cavity 12, and the third cooling air cavity 15 decreases step by step.

[0035] A dust cover 23 is fixed between the traction box 3 and the shaping cable sleeve 5, and the two ends of the dust cover 23 are respectively connected to the cable outlet 4 and the shaping cable sleeve 5, and the cross section of the dust cover 23 is trapezoidal.

[0036] In this embodiment, during use: First, the cable is extruded from the cable extrusion port 2 on the outer wall of the extruder body 1. The servo motor 24 inside the traction box 3 drives the upper traction roller 21 and lower traction roller 22 to rotate in opposite directions, pulling the cable through the inside of the shaping cable sleeve 5. The shaping cable sleeve 5 has a first cooling air duct 7, a second cooling air duct 11, and a third cooling air duct 14, and correspondingly has a first cooling air cavity 9, a second cooling air cavity 12, and a third cooling air cavity 15. The first cooling air cavity 9 and the second cooling air cavity... 12. The third cooling air chamber 15 is connected to the first cooling air duct 7, the second cooling air duct 11, and the third cooling air duct 14 through the air outlet 501. Airflow close to room temperature is delivered from the air inlet duct 16 to the third cooling air chamber 15. The airflow enters the third cooling air duct 14 to cool the cable. After heat exchange, the airflow temperature rises and enters the second cooling air chamber 12 through the second connecting channel 13, then enters the second cooling air duct 11 to cool the cable. After heat exchange again, the airflow enters the first cooling air duct 12 through the first connecting channel 10. In cavity 9, the cable enters the first cooling duct 7 to cool it. Airflow close to room temperature is transferred from the third cooling duct 14 to the second cooling duct 11 and the first cooling duct 7, resulting in the highest airflow temperature in the first cooling duct 7, which is close to the initial surface temperature of the cable. The airflow temperature in the second cooling duct 11 decreases, and the airflow temperature in the third cooling duct 14 is the lowest. The multi-duct structure and the gradually decreasing airflow temperature can reduce the shear stress and thermal stress of the cable, reduce cable shrinkage, and ensure the extrusion quality of the cable. Moreover, the airflow and the cable exchange heat in opposite directions, using the heat of the cable to achieve stepped cooling. The structure is ingenious, energy-saving and environmentally friendly. At the same time, when the cable passes through the shaping cavity 6, the small cylinder 18 inside the drive groove 17 drives the ball shell 19 to move closer to the cable. The ball 20 is in close contact with the outer surface of the cable and rolls in coordination with the movement of the cable. By limiting and shaping the cable, the tightness of the cable core and insulation layer can be improved, thereby improving the stability and reliability of the cable.

[0037] 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.

Claims

1. An extrusion device for electric vehicle cable, comprising an extruder body (1), a cable extrusion port (2) is arranged on the outer wall of one side of the extruder body (1), characterized in that, A traction box (3) is fixed on the outer wall of the extruder body (1) outside the cable extrusion port (2). An upper traction roller (21) and a lower traction roller (22) are installed inside the traction box (3) via a servo motor (24). A shaping cable sleeve (5) is provided on one side of the traction box (3). Equally spaced shaping cavities (6) are provided inside the shaping cable sleeve (5). A first cooling air duct (7), a second cooling air duct (11), and a third cooling air duct (14) are provided inside the shaping cable sleeve (5) between the shaping cavities (6). The first cooling air duct (7), the second cooling air duct (11), and the third cooling air duct (14) are... 11) The third cooling air duct (14) are connected to each other through the first connecting channel (10) and the second connecting channel (13). The first cooling air duct (7), the second cooling air duct (11), and the third cooling air duct (14) are respectively provided with the first cooling air cavity (9), the second cooling air cavity (12), and the third cooling air cavity (15) inside the shaping cable sleeve (5) on the outside of the first cooling air duct (7), the second cooling air cavity (12), and the third cooling air cavity (15). The first cooling air cavity (9), the second cooling air cavity (12), and the third cooling air cavity (15) are connected to the first cooling air duct (7), the second cooling air duct (11), and the third cooling air duct (14) through the air outlet (501).

2. The apparatus for extruding an electric vehicle cable according to claim 1, wherein: The top of the shaped cable sleeve (5) is equipped with an air outlet pipe (8) and an air inlet pipe (16) on both sides, and the air outlet pipe (8) and the air inlet pipe (16) are respectively connected to the first cooling air chamber (9) and the third cooling air chamber (15).

3. The apparatus for extruding an electric vehicle cable of claim 1, wherein: The top of the shaped cable sleeve (5) is equipped with three temperature sensors (502), and the detection ends of the temperature sensors (502) extend into the interior of the first cooling air cavity (9), the second cooling air cavity (12), and the third cooling air cavity (15), respectively.

4. The apparatus for extruding an electric vehicle cable of claim 1, wherein: The inner wall of the shaping cable sleeve (5) on the outside of the shaping cavity (6) is provided with equally spaced drive grooves (17), and a small cylinder (18) is installed inside the drive groove (17).

5. The apparatus for extruding an electric vehicle cable of claim 4, wherein: The output end of the small cylinder (18) is fixed with a ball housing (19), and a ball body (20) is provided inside the ball housing (19).

6. The apparatus for extruding an electric vehicle cable of claim 1, wherein: The shaped cable sleeve (5) is a cylindrical hollow structure, and both ends of the shaped cable sleeve (5) are open.

7. The apparatus for extruding an electric vehicle cable of claim 1, wherein: The first cooling air cavity (9), the second cooling air cavity (12), and the third cooling air cavity (15) are all annular structures, and the temperature in the first cooling air cavity (9), the second cooling air cavity (12), and the third cooling air cavity (15) decreases step by step.

8. The apparatus for extruding an electric vehicle cable of claim 1, wherein: A dust cover (23) is fixed between the traction box (3) and the shaping cable sleeve (5), and the two ends of the dust cover (23) are respectively connected to the cable outlet (4) and the shaping cable sleeve (5), and the cross section of the dust cover (23) is trapezoidal.

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