Electric wire and cable extruder

Abstract

A wire and cable extruder relates to the technical field of extruders and comprises a base, an extrusion mechanism is fixedly mounted above the base, a conical cavity is formed in the extrusion mechanism, a mixing barrel is mounted at the rear end above the extrusion mechanism, and a discharging pipe with a valve is arranged between the mixing barrel and the extrusion mechanism. A cable core guide pipe is installed at the rear end of the extrusion mechanism and connected with the extrusion mechanism through a bearing, one end of the cable core guide pipe extends into the conical cavity, a spiral extrusion blade is fixedly arranged at the end, located in the conical cavity, of the cable core guide pipe, and a cable core conveying hole penetrating through the two ends is formed in the cable core guide pipe. And a cooling cavity is formed in the front end of the interior of the extrusion mechanism. According to the scheme, the problems that in the material extrusion process of an extruder, the wrapping performance of a cable core is poor, and uneven distribution is likely to occur are solved.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to an extruder for wires and cables. Background Technology

[0002] An electric wire and cable extruder is a piece of equipment used to produce electric wires and cables. It heats and melts plastic raw materials under high temperature and pressure, then uses the rotating motion of a screw within the barrel to convey, compact, melt, and plasticize the plastic. Finally, the material is extruded through a die in the extruder head to form the wire core insulation or cable sheath. An extruder typically consists of a feeding system, a plasticizing system, an extrusion system, a cooling system, and a winding system, and is characterized by a high degree of automation, high production efficiency, and a wide variety of product specifications.

[0003] For example, the Chinese authorized patent CN205969890U, entitled "A Cable Extruder," includes a base, a gearbox, a motor, and a barrel. The gearbox is mounted on the base, and the motor is connected to the gearbox. The barrel is mounted on the gearbox, and a screw is installed inside the barrel. A cooling device is connected to the discharge port of the barrel, and a heating jacket is installed on the inner wall of the barrel. An air heater is installed below the barrel, and the air inlet and outlet of the air heater are connected to the heating jacket through air circulation pipes. A first feed port and a second feed port are sequentially arranged on the barrel along the movement direction of the cable core. A first feed hopper is installed above the first feed port, and a second feed hopper is installed above the second feed port.

[0004] While the existing technologies can achieve the coating of the outer functional layer of the cable core, the material has poor wrapping properties with the cable core during the extrusion process, and uneven distribution is likely to occur. Therefore, it does not meet the current requirements. To address this, we propose a wire and cable extruder. Utility Model Content

[0005] The purpose of this invention is to provide a wire and cable extruder to solve the problem mentioned in the background art where the extruder has poor wrapping properties for the cable core during the material extrusion process, and uneven distribution is likely to occur.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wire and cable extruder, including a base, an extrusion mechanism fixedly installed above the base, a conical cavity provided inside the extrusion mechanism, a mixing cylinder installed at the rear end above the extrusion mechanism, and a discharge pipe with a valve installed between the mixing cylinder and the extrusion mechanism, a cable core guide tube installed at the rear end of the extrusion mechanism, the cable core guide tube being connected to the extrusion mechanism via a bearing, and one end of the cable core guide tube extending into the interior of the conical cavity, a spiral extrusion blade fixedly installed at one end of the cable core guide tube located inside the conical cavity, a cable core conveying hole penetrating both ends provided inside the cable core guide tube, and a cooling cavity provided at the front end inside the extrusion mechanism.

[0007] Preferably, a geared motor is fixedly installed below the rear end of the base, and pulleys are provided on the output shaft of the geared motor and the outside of the cable core guide tube, with the upper and lower pulleys connected by a belt.

[0008] Preferably, the base is provided with a traction mechanism at both the front and rear ends. The traction mechanism includes a fixed plate, which is welded to the base. A movable wheel is rotatably installed on one side of the fixed plate.

[0009] Preferably, a mixing motor is fixedly installed at the top of the mixing cylinder, a rotating shaft extending into the mixing cylinder is installed at the output end of the mixing motor, a mixing rod is fixedly installed on the outside of the rotating shaft, and a feed port is provided on one side of the upper end of the mixing cylinder.

[0010] Preferably, a water storage chamber is provided at the front end of the bottom of the base, an inlet pipe is provided on one side of the upper end of the water storage chamber, and an outlet pipe is provided on the other side of the upper end of the water storage chamber. Both the inlet pipe and the outlet pipe are connected to the cooling chamber, and a pump is installed on the outside of the inlet pipe.

[0011] Preferably, the extrusion mechanism has a cable outlet at its outlet.

[0012] Preferably, a heating device is installed on the outside of the mixing cylinder.

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

[0014] 1. This utility model features a continuous cable core extrusion mechanism. The cable core is pre-passed through the inside of the cable core guide tube, running through the entire extrusion mechanism. Combined with a traction mechanism, the cable core is conveyed in a straight line. After the material is mixed and heated inside the mixing cylinder, the valve of the feeding pipe is opened, allowing it to gradually enter the conical cavity inside the extrusion mechanism. By activating the reduction motor, its output shaft drives the pulley to rotate, which in turn drives the cable core guide tube to rotate. This causes the spiral extrusion blades inside the conical cavity to rotate, allowing the material to move slowly from one side to the other. During this movement, as the space between adjacent spiral extrusion blades decreases, the molten material is squeezed, expelling residual air. The material then wraps around the outside of the cable core at the end of the conical cavity and finally exits from the cable outlet. This continuous cable core extrusion mechanism utilizes a conical channel to squeeze and convey the material, ensuring it tightly wraps around the outer wall of the cable core, improving the fixing effect of the molding, and minimizing residual air bubbles, thus improving the uniformity of material distribution.

[0015] 2. This invention utilizes a cooling chamber. By activating a pump, cold water from the storage chamber is delivered to the cooling chamber through an inlet pipe. After circulating within the cooling chamber, the water flows back to the storage chamber through an outlet pipe. When the cable, still at a high temperature after being covered by the material, passes through the channel of the cooling chamber, direct heat exchange occurs between the cold water in the cooling chamber and the cable surface. During this process, the high temperature on the cable surface is effectively absorbed and carried away by the cold water, thereby rapidly reducing the cable temperature. This immediate cooling treatment not only helps accelerate the cable's shaping process and ensures a tight bond between the sheath and the cable core, but also effectively prevents problems such as material deformation, cracking, or performance degradation caused by high temperatures.

[0016] 3. This utility model is equipped with a mixing cylinder. Different materials are added into the mixing cylinder in proportion from the feed port. By turning on the mixing motor, the rotating shaft is driven to rotate, and then the different materials are mixed by the mixing rod. During the mixing process, the heating device is turned on, so that the mixed materials gradually melt, which further promotes the fusion and uniform distribution of the materials. The melted materials are not only easier to extrude and coat onto the cable core, but also significantly improve the forming quality and physical properties of the wire and cable. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0021] In the diagram: 1. Base; 2. Extrusion mechanism; 3. Mixing cylinder; 4. Heating device; 5. Gear motor; 6. Cable core guide tube; 7. Belt; 8. Traction mechanism; 9. Fixed plate; 10. Movable wheel; 11. Mixing motor; 12. Feed inlet; 13. Water inlet pipe; 14. Water outlet pipe; 15. Cable outlet; 16. Conical cavity; 17. Spiral extrusion blades; 18. Cooling chamber; 19. Water storage chamber; 20. Rotating shaft; 21. Mixing rod; 23. Pump. Detailed Implementation

[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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4An embodiment of this utility model provides: a wire and cable extruder, including a base 1, an extrusion mechanism 2 fixedly installed on the top of the base 1, a conical cavity 16 provided inside the extrusion mechanism 2, a cable core guide tube 6 installed at the rear end of the extrusion mechanism 2, the cable core guide tube 6 being connected to the extrusion mechanism 2 via a bearing, and one end of the cable core guide tube 6 extending into the interior of the conical cavity 16, a spiral extrusion blade 17 fixedly provided at one end of the cable core guide tube 6 located inside the conical cavity 16, a cable core conveying hole penetrating both ends provided inside the cable core guide tube 6, a cable outlet 15 provided at the outlet of the extrusion mechanism 2, a reduction motor 5 fixedly installed below the rear end of the base 1, and pulleys provided on both the output shaft of the reduction motor 5 and the exterior of the cable core guide tube 6, the upper and lower pulleys being connected by a belt 7;

[0024] The cable core is pre-passed through the inside of the cable core guide tube 6, so that it runs through the entire extrusion mechanism 2. After the material is mixed and heated, the valve of the feed pipe is opened, allowing it to gradually enter the conical cavity 16 inside the extrusion mechanism 2. By turning on the reduction motor 5, its output shaft drives the pulley to rotate, which in turn drives the cable core guide tube 6 to rotate with the belt 7. This causes the spiral extrusion blades 17 inside the conical cavity 16 to rotate, allowing the material to move slowly from one side to the other. During the movement, as the space between adjacent spiral extrusion blades 17 continuously decreases, the molten material is squeezed, expelling the residual air inside. The material then covers the outside of the cable core at the end of the conical cavity 16 and is finally discharged from the cable outlet 15.

[0025] Please see Figure 1 The base 1 is equipped with a traction mechanism 8 at both the front and rear ends. The traction mechanism 8 includes a fixed plate 9, which is welded to the base 1. A movable wheel 10 is rotatably installed on one side of the fixed plate 9 to transport the cable core in a straight state.

[0026] Please see Figure 1 and Figure 4 A mixing cylinder 3 is installed at the rear end above the extrusion mechanism 2, and a discharge pipe with a valve is provided between the mixing cylinder 3 and the extrusion mechanism 2. A mixing motor 11 is fixedly installed at the top of the mixing cylinder 3. A rotating shaft 20 extending into the mixing cylinder 3 is installed at the output end of the mixing motor 11. A mixing rod 21 is fixedly installed on the outside of the rotating shaft 20. A feed inlet 12 is provided on one side of the upper end of the mixing cylinder 3. A heating device 4 is installed on the outside of the mixing cylinder 3.

[0027] Different materials are added into the mixing cylinder 3 in proportion from the feed inlet. The mixing motor 11 is turned on, which drives the rotating shaft 20 to rotate. The mixing rod 21 then mixes the different materials. During the mixing process, the heating device 4 is turned on, which gradually melts the mixed materials, further promoting the fusion and uniform distribution of the materials.

[0028] Please see Figure 1 and Figure 4 The front end of the extrusion mechanism 2 is provided with a cooling chamber 18, and the front end of the bottom of the base 1 is provided with a water storage chamber 19. A water inlet pipe 13 is provided on one side of the upper end of the water storage chamber 19, and a water outlet pipe 14 is provided on the other side of the upper end of the water storage chamber 19. Both the water inlet pipe 13 and the water outlet pipe 14 are connected to the cooling chamber 18. A pump 23 is installed outside the water inlet pipe 13. By turning on the pump 23, the cold water inside the water storage chamber 19 is transported to the interior of the cooling chamber 18 through the water inlet pipe 13. After circulating inside the cooling chamber 18, the water flows back to the water storage chamber 19 through the water outlet pipe 14. When the cable, which is covered by material and is still in a high temperature state, passes through the channel where the cooling chamber is located, the cold water in the cooling chamber directly exchanges heat with the surface of the cable. During this process, the high temperature on the surface of the cable is effectively absorbed and carried away by the cold water, thereby rapidly reducing the temperature of the cable.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wire and cable extruder, comprising a base (1), characterized in that: An extrusion mechanism (2) is fixedly installed above the base (1). A conical cavity (16) is provided inside the extrusion mechanism (2). A mixing cylinder (3) is installed at the rear end above the extrusion mechanism (2). A discharge pipe with a valve is provided between the mixing cylinder (3) and the extrusion mechanism (2). A cable core guide tube (6) is installed at the rear end of the extrusion mechanism (2). The cable core guide tube (6) is connected to the extrusion mechanism (2) through a bearing. One end of the cable core guide tube (6) extends into the interior of the conical cavity (16). A spiral extrusion blade (17) is fixedly provided at one end of the cable core guide tube (6) inside the conical cavity (16). A cable core conveying hole that passes through both ends is provided inside the cable core guide tube (6). A cooling cavity (18) is provided at the front end inside the extrusion mechanism (2).

2. The wire and cable extruder according to claim 1, characterized in that: A geared motor (5) is fixedly installed below the rear end of the base (1). The output shaft of the geared motor (5) and the outside of the cable core guide tube (6) are both provided with pulleys, and the upper and lower pulleys are connected by a belt (7).

3. The wire and cable extruder according to claim 1, characterized in that: The base (1) is provided with a traction mechanism (8) at both the front and rear ends. The traction mechanism (8) includes a fixed plate (9), which is welded to the base (1). A movable wheel (10) is rotatably installed on one side of the fixed plate (9).

4. The wire and cable extruder according to claim 1, characterized in that: A mixing motor (11) is fixedly installed at the top of the mixing cylinder (3). A rotating shaft (20) extending into the mixing cylinder (3) is installed at the output end of the mixing motor (11). A mixing rod (21) is fixedly installed on the outside of the rotating shaft (20). A feed inlet (12) is provided on one side of the upper end of the mixing cylinder (3).

5. The wire and cable extruder according to claim 1, characterized in that: A water storage chamber (19) is provided at the front end of the bottom of the base (1). A water inlet pipe (13) is provided on one side of the upper end of the water storage chamber (19), and a water outlet pipe (14) is provided on the other side of the upper end of the water storage chamber (19). Both the water inlet pipe (13) and the water outlet pipe (14) are connected to the cooling chamber (18). A pump (23) is installed on the outside of the water inlet pipe (13).

6. The wire and cable extruder according to claim 1, characterized in that: The extrusion mechanism (2) is provided with a cable outlet (15).

7. The wire and cable extruder according to claim 1, characterized in that: A heating device (4) is installed on the outside of the mixing cylinder (3).

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