Uniform extrusion coating device for cable insulation

Abstract

The utility model discloses cable insulation layer even extrusion coating device, specifically related to cable coating technical field, including the extension cylinder of installation on extruder, one end of extension cylinder is provided with gather coating subassembly, gather coating subassembly includes the gather hopper of setting in one end, the middle part of extension cylinder is provided with the protection tube The outside of protection tube is equipped with the shunt ring. The utility model discloses through the cooperation of shunt ring and shunt vane, can along extension cylinder circumference even shunt the molten coating material of delivery from extruder, avoid material local accumulation or vacancy, at the same time, the gather hopper of circular platform and coating cavity make material gradually gather in the delivery, the central positioning effect of combination threading pipe to cable, ensure that the molten material along cable circumference even package, significantly improve the problem of coating layer thickness uneven, and then guarantee cable insulation performance stable, appearance even.

Description

Technical Field

[0001] This utility model relates to the field of cable coating technology, and more specifically, to a uniform extrusion coating device for cable insulation layers. Background Technology

[0002] A cable is an electrical energy or signal transmission device, consisting of one or more mutually insulated conductors and an outer insulating protective layer, which transmits electricity or information from one place to another.

[0003] Currently, cable insulation coating involves wrapping the cable with molten plastic material. However, the molten coating material cannot evenly cover the outer surface of the cable, resulting in uneven coating thickness, which affects the insulation performance and appearance quality of the cable. To address this, a cable insulation layer uniform extrusion coating device is provided. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a cable insulation layer uniform extrusion coating device, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a uniform extrusion coating device for cable insulation layer, including an extension cylinder installed on an extruder, and a convergence coating component is provided at one end of the extension cylinder;

[0006] The aggregation coating assembly includes an aggregation hopper at one end, a protective tube in the middle of the extension tube, a flow divider ring on the outside of the protective tube, and several flow divider blades distributed between the flow divider ring and the protective tube.

[0007] The protective tube is provided with a conduit in the middle for guiding the cable.

[0008] Optionally, in a possible implementation, one end of the conduit extends to one side of the inner wall of the gathering hopper, and the vertical cross-section of the gathering hopper is set to a frustum shape. A coating cavity is formed between the conduit and the gathering hopper, and a guide slope is provided at the end of the protective tube facing the inner wall of the gathering hopper. A plurality of diversion grooves are provided on the outer side of the diversion ring. The diversion blades are fixed between the diversion ring and the protective tube. Limiting rods are provided in the plurality of diversion grooves. One end of the limiting rod extends to the inner wall of the extension tube. The protective tube and the conduit are in the same axial direction and are rotatably connected.

[0009] The technical effects and advantages of this utility model are as follows:

[0010] By combining the flow divider ring and flow divider blades, the molten coating material conveyed from the extruder can be evenly distributed along the circumference of the extension cylinder, avoiding local accumulation or gaps in the material. At the same time, the frustum-shaped gathering hopper and coating cavity allow the material to gradually gather during conveying. Combined with the center positioning effect of the cable conduit, this ensures that the molten material is evenly wrapped around the cable circumference, significantly improving the problem of uneven coating thickness, thereby ensuring stable cable insulation performance and a smooth appearance.

[0011] Furthermore, the diversion ring is fixed to the inner wall of the extension cylinder by the limiting rod in the diversion groove, which can effectively resist the impact of molten material, prevent the diversion ring from shifting or shaking, and ensure the long-term stability of the diversion structure. At the same time, the protective pipe and the conduit are rotatably connected, which reduces the friction loss between the two, ensures smooth cable transportation, and improves the overall operational reliability of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0013] Figure 1 This is a front view of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the extension tube, protective tube, diverter ring, limiting rod, and conduit of this utility model.

[0016] Figure 4 This utility model Figure 4 Exploded view.

[0017] The attached diagram is labeled as follows: 1. Extension tube; 2. Gathering hopper; 3. Protective tube; 4. Diverting ring; 5. Diverting blade; 6. Coating cavity; 7. Guide ramp; 8. Conduit; 9. Diverting groove; 10. Limiting rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] This embodiment discloses a uniform extrusion coating device for cable insulation, which aims to solve the problem in the prior art that the molten plastic material cannot uniformly cover the outer surface of the cable during cable insulation coating, resulting in uneven coating thickness.

[0021] The device includes an extension cylinder 1 installed at the discharge end of the extruder. One end of the extension cylinder 1 is equipped with a convergent coating component, which is used to uniformly guide the molten coating material, such as plastic, conveyed by the extruder to the surface of the cable and complete the coating. The middle part of the extension cylinder 1 is a hollow structure, which is used to receive and convey the molten coating material output from the extruder.

[0022] The cohesive coating assembly is the core structure for achieving uniform coating. It includes a cohesive hopper 2, a protective tube 3, a flow divider ring 4, flow divider blades 5, and a conduit 8. The specific structure and connection relationship of each component are as follows:

[0023] As shown in Figure 2, the gathering hopper 2 is fixed at the end of the extension cylinder 1 away from the extruder. Its vertical cross-section is frustum-shaped, with one end having a larger diameter and the other a smaller diameter. The end with the larger diameter is connected to the end of the extension cylinder 1, and the end with the smaller diameter is the output end of the coating material, corresponding to the outlet end of the cable. The frustum-shaped structure design allows the molten coating material to gradually gather during the conveying process, avoiding local accumulation or gaps caused by material dispersion.

[0024] As shown in Figures 2 and 3, the protective tube 3 is located in the middle of the extension tube 1. It is hollow inside and coaxial with the extension tube 1. The cable guide tube 8 is located in the middle of the protective tube 3. The protective tube 3 and the cable guide tube 8 are on the same axis. The two are rotatably connected by bearings, which can reduce the friction between the cable guide tube 8 and the protective tube 3 and ensure the stability of cable transmission.

[0025] One end of the conduit 8 extends to one side of the inner wall of the collecting hopper 2, as shown in Figure 2. It is hollow inside and used to thread the cable to be coated. The cable enters from one end of the conduit 8 and exits from the other end to the outlet of the collecting hopper 2. The conduit 8 guides and positions the cable, ensuring it remains centered during coating and preventing uneven coating thickness due to cable misalignment.

[0026] As shown in Figure 2, an annular coating cavity 6 is formed between the outer wall of the conduit 8 and the inner wall of the gathering hopper 2. The inlet end of the coating cavity 6 is connected to the interior of the extension cylinder 1 to receive the molten coating material, and the outlet end is connected to the small opening end of the gathering hopper 2, corresponding to the coating area of ​​the cable. A guide slope 7 is provided at the end of the protective pipe 3 facing the inner wall of the gathering hopper 2. The guide slope 7 is inclined from the outer wall of the protective pipe 3 to the inlet end of the coating cavity 6, which can smoothly guide the molten coating material in the extension cylinder 1 into the coating cavity 6, avoid turbulence caused by material impact, and further ensure uniform material distribution.

[0027] As shown in Figures 3 and 4, the flow divider ring 4 is an annular structure, sleeved on the outside of the protective tube 3, and a gap is left between the outer wall of the flow divider ring 4 and the inner wall of the extension tube 1 for the passage of molten material; several flow divider blades 5 are evenly distributed circumferentially between the flow divider ring 4 and the protective tube 3, one end of the flow divider blade 5 is fixedly connected to the inner wall of the flow divider ring 4, and the other end is fixedly connected to the outer wall of the protective tube 3.

[0028] Several diversion grooves 9 are provided on the outer side of the diversion ring 4. The diversion grooves 9 are evenly distributed along the circumference of the diversion ring 4. When the molten coating material enters the extension cylinder 1 from the extruder, it will first contact the diversion ring 4 and be evenly diverted through the gap between the diversion grooves 9 and the diversion blades 5, so that the material is evenly distributed along the circumference of the extension cylinder 1 and avoids local material accumulation.

[0029] The specific working principle is as follows: the cable to be coated is inserted from the end of the conduit 8 away from the gathering hopper 2, passes through the inside of the conduit 8 and the coating cavity 6 of the gathering hopper 2 in sequence, and finally comes out from the small end of the gathering hopper 2. At this time, the cable is on the axis of the conduit 8 and the gathering hopper 2.

[0030] The extruder delivers molten coating material, such as plastic, into the extension cylinder 1. The material first contacts the flow divider ring 4, and under the action of the flow divider groove 9 and the flow divider blades 5, it is evenly distributed along the circumference of the extension cylinder 1 to avoid excessively high local material concentration.

[0031] After being diverted, the molten material continues to be conveyed towards the gathering hopper 2. When it comes into contact with the guide slope 7 at the end of the protective pipe 3, it smoothly enters the coating cavity 6 between the conduit pipe 8 and the gathering hopper 2 under the guidance of the guide slope 7.

[0032] Since the gathering hopper 2 is frustum-shaped, the cross-sectional area of ​​the coating cavity 6 gradually decreases from the inlet end to the outlet end. The molten material is gradually gathered in the coating cavity 6. At the same time, due to the positioning effect of the cable by the conduit 8, the cable is always in the center of the coating cavity 6. Therefore, the molten material can be evenly wrapped around the outer surface of the cable along the circumference.

[0033] The coated cable passes through the small opening of the gathering bucket 2, and after cooling and shaping, a uniform insulation layer is formed.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cable insulation layer uniform extrusion coating device, comprising an extension cylinder (1) mounted on an extruder, characterized in that: One end of the extension tube (1) is provided with a cohesive coating component; The gathering coating assembly includes a gathering bucket (2) at one end, a protective tube (3) in the middle of the extension tube (1), a flow divider ring (4) on the outside of the protective tube (3), and a number of flow divider blades (5) distributed between the flow divider ring (4) and the protective tube (3). The protective tube (3) is provided with a conduit (8) for guiding the cable in the middle.

2. The cable insulation layer uniform extrusion coating device according to claim 1, characterized in that: One end of the conduit (8) extends to one side of the inner wall of the gathering hopper (2), and the vertical cross-section of the gathering hopper (2) is set to a frustum shape.

3. The cable insulation layer uniform extrusion coating device according to claim 1, characterized in that: A coating cavity (6) is formed between the conduit (8) and the gathering hopper (2), and a guide slope (7) is provided at the end of the protective tube (3) facing the inner wall of the gathering hopper (2).

4. The cable insulation layer uniform extrusion coating device according to claim 1, characterized in that: The outer side of the flow divider ring (4) is provided with several flow divider grooves (9), and the flow divider blades (5) are fixed between the flow divider ring (4) and the protective tube (3).

5. The cable insulation layer uniform extrusion coating apparatus according to claim 4, characterized in that: Limiting rods (10) are provided in the multiple diversion channels (9), and one end of the limiting rods (10) extends to the inner wall of the extension cylinder (1).

6. The cable insulation layer uniform extrusion coating apparatus according to claim 1, characterized in that: The protective tube (3) and the conduit (8) are on the same axial direction and are rotatably connected.

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