Electric discharge extrusion plastic coating equipment

Abstract

This utility model relates to the field of electric wire and cable production technology, and in particular to an extrusion coating device for electric wire and cable. This device allows the electric wire and cable to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold is equipped with a thickness control component, including horizontally movable left and right adjustable die lips, which can precisely adjust the size of the discharge hole, ensuring the uniformity and adjustability of the coating thickness to meet the processing needs of electric wire and cable of different specifications. Furthermore, the design of the conical injection channel and stepped transition surface optimizes the flow distribution of the molten material, reducing turbulence and bubble generation, and improving the coating quality. The combined use of the guide sleeve and positioning component accurately guides the electric wire and cable into the extrusion cavity, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and has high practicality and economy.

Description

Technical Field

[0001] This utility model relates to the field of electric wire and cable production technology, and in particular to an extrusion coating device for electric cable and cable. Background Technology

[0002] With the development of power equipment, new energy batteries, and industrial automation, power strips are increasingly widely used in power transmission and electrical connections. To improve the insulation performance, weather resistance, and mechanical strength of power strips, it is necessary to coat the surface of the power strip with an insulating or protective layer using an extrusion coating device.

[0003] Traditional extrusion coating equipment typically only achieves single-layer plastic coating. If multiple layers of protection are required, multiple processing steps are necessary, resulting in low production efficiency and high energy consumption. Furthermore, the interlayer bonding strength is insufficient, making delamination a common problem. In addition, the dies are mostly designed with fixed gaps, which cannot dynamically adjust the coating thickness, leading to uneven thickness of the finished product and affecting the consistency of insulation performance. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an electric discharge extrusion plastic coating device.

[0005] The present invention adopts the following technical solution:

[0006] An extrusion coating device for electric busbars is disclosed. The device includes an extrusion mold and at least one extruder. The extrusion mold has a transversely penetrating extrusion cavity. The extrusion cavity includes multiple extrusion channels arranged sequentially along the travel direction of the electric busbar, with their width gradually increasing. The extrusion mold has multiple injection channels corresponding to the extrusion channels. The first end of each injection channel is connected to a corresponding extrusion channel, and the second end of each injection channel is connected to a corresponding extruder. As the electric busbar travels, it passes through the multiple extrusion channels sequentially, injecting various materials to form a multi-layer coating structure on the surface of the electric busbar. The extrusion mold has a discharge hole communicating with the extrusion cavity. The discharge hole has a thickness control component, including an upper fixed die lip, a lower fixed die lip, a left adjusting die lip, and a right adjusting die lip. The left and right adjusting die lips move horizontally relative to the upper and lower fixed die lips to control the size of the discharge hole.

[0007] Preferably, the extrusion die is provided with an inlet channel, and the two ends of the inlet channel are respectively connected to the extruder and the injection channel.

[0008] Preferably, the injection channel is arranged in a conical structure and surrounds the extrusion channel.

[0009] Preferably, a stepped transition surface is provided between adjacent extrusion channels.

[0010] Preferably, the thickness adjustment component further includes a first slide rail and a second slide rail, the left adjusting die lip is slidably connected to the first slide rail, and the right adjusting die lip is slidably connected to the second slide rail.

[0011] Preferably, the thickness adjustment component includes a first driving element and a second driving element, the first driving element being driven connected to the left adjusting die lip, and the second driving element being driven connected to the right adjusting die lip; the first driving element and the second driving element drive the left adjusting die lip and the right adjusting die lip to move toward each other.

[0012] Preferably, both the first driving element and the second driving element are cylinders.

[0013] Preferably, it further includes a guide sleeve, which is installed at one end of the extrusion mold, and the guide sleeve has a guide hole that communicates with the extrusion cavity.

[0014] Preferably, it further includes a positioning component, which includes a base plate, a side plate, a guide roller, and a positioning roller; the side plate is fixed to both sides of the base plate, the guide roller is located at the upper end of the base plate and its two ends are rotatably connected to the side plate, and there are two positioning rollers, which are symmetrically distributed on the base plate.

[0015] Preferably, the side plate is provided with a vertically extending first slide groove, and the two ends of the guide roller are slidably connected to the first slide groove to adjust the height of the guide roller; the bottom plate is provided with a second slide groove, and the two positioning rollers are slidably connected to the second slide groove to adjust the distance between the two positioning rollers.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model relates to an electromast extrusion coating device that allows the electromast to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold is equipped with a thickness control component, including horizontally movable left and right adjustable die lips, which can precisely adjust the size of the discharge hole, ensuring the uniformity and adjustability of the coating thickness to adapt to the processing needs of electromasts of different specifications. Furthermore, the design of the conical injection channel and stepped transition surface optimizes the flow distribution of the molten material, reducing turbulence and bubble generation, and improving coating quality. The combined use of the guide sleeve and positioning component accurately guides the electromast into the extrusion cavity, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and possesses high practicality and economic efficiency. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the electric discharge extrusion plastic coating device of this utility model;

[0019] Figure 2 This is a top view of the electric discharge extrusion plastic coating device of this utility model;

[0020] Figure 3 for Figure 1 Front view of the extrusion mold;

[0021] Figure 4 for Figure 3 A cross-sectional view along BB;

[0022] Figure 5 for Figure 3 Sectional view along CC;

[0023] Figure 6 for Figure 1 A schematic diagram of the thickness control component in the diagram;

[0024] Numbering on the map:

[0025] 10-Extrusion mold; 11-Extrusion cavity; 12-Extrusion runner; 13-Injection runner; 14-Outlet; 15-Transition surface; 16-Inlet runner;

[0026] 20 - Extruder;

[0027] 30 - Thickness adjustment component; 31 - Upper fixed die lip; 32 - Lower fixed die lip; 33 - Left adjusting die lip; 34 - Right adjusting die lip; 35 - First slide rail; 36 - Second slide rail; 37 - First driving element; 38 - Second driving element;

[0028] 40 - Guide sleeve; 41 - Guide hole;

[0029] 50 - Positioning component; 51 - Base plate; 52 - Side plate; 53 - Guide roller; 54 - Positioning roller; 55 - First chute; 56 - Second chute. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figures 1 to 6 As shown, this utility model discloses an electric busbar extrusion coating device that can process a multi-layer coating structure on the surface of the electric busbar to improve its insulation performance, weather resistance, and mechanical strength. The aforementioned electric busbar extrusion coating device includes an extrusion mold 10 and at least one extruder 20. The extrusion mold 10 has a transversely penetrating extrusion cavity 11, which includes multiple extrusion channels 12 arranged sequentially along the electric busbar's traveling direction and gradually increasing in width. The extrusion mold 10 has multiple injection channels 13 corresponding to the extrusion channels 12. The first end of each injection channel 13 is connected to the corresponding extrusion channel 12, and the second end of each injection channel 13 is connected to the corresponding extruder 20. In actual processing, as... Figure 4 and Figure 5 As shown, the electric busbar travels along direction A within the extrusion cavity 11. Corresponding injection channels 13 inject different materials into the corresponding extrusion channels 12. As the electric busbar passes through multiple injection channels, different insulating layers, protective layers, etc., are gradually formed on its surface, ultimately creating a multi-layered coating structure. This single-process extrusion coating of the electric busbar improves production efficiency and reduces energy consumption. Furthermore, the aforementioned processing mechanism and steps gradually create different layers on the electric busbar surface, enhancing interlayer bonding, preventing delamination, and improving the stability of the electric busbar in use.

[0034] Meanwhile, the extrusion mold 10 is provided with a discharge hole 14 that communicates with the extrusion cavity 11. A thickness control component 30 is provided in the discharge hole 14. The thickness control component 30 includes an upper fixed die lip 31, a lower fixed die lip 32, a left adjusting die lip 33, and a right adjusting die lip 34. The left adjusting die lip 33 and the right adjusting die lip 34 move horizontally relative to the upper fixed die lip 31 and the lower fixed die lip 32 to control the size of the discharge hole 14 and dynamically adjust the coating thickness, resulting in a uniform thickness of the finished product.

[0035] Please see Figure 4 and Figure 5 A stepped transition surface 15 is provided between adjacent extrusion channels 12 to make the overmolding process smoother. The injection channel 13 is tapered and surrounds the extrusion channel 12, so that the overmolding material enters the extrusion channel 12 evenly, further ensuring the uniformity of the overmolding. The extrusion mold 10 is provided with an inlet channel 16, the two ends of which are connected to the extruder 20 and the injection channel 13, respectively, which can connect the extruder 20 and the extrusion cavity 11.

[0036] Please see Figure 6 The thickness adjustment component 30 also includes a first slide rail 35 and a second slide rail 36. The left adjusting die lip 33 is slidably connected to the first slide rail 35, and the right adjusting die lip 34 is slidably connected to the second slide rail 36. It also includes a first driving element 37 and a second driving element 38. The first driving element 37 is driven to the left adjusting die lip 33, and the second driving element 38 is driven to the right adjusting die lip 34. The first driving element 37 and the second driving element 38 drive the left adjusting die lip 33 and the right adjusting die lip 34 to move towards each other. The first slide rail 35 and the second slide rail 36 ensure the sliding stability of the left adjusting die lip 33 and the right adjusting die lip 34. In this embodiment, both the first driving element 37 and the second driving element 38 are cylinders to ensure operational stability.

[0037] Please see Figure 1 and Figure 2 It also includes a guide sleeve 40, which is installed at one end of the extrusion mold 10. The guide sleeve 40 has a guide hole 41, which is connected to the extrusion cavity 11. The electric bus enters the extrusion cavity 11 through the guide hole 41 to guide and position the bus, thereby ensuring the accuracy of the subsequent extrusion coating.

[0038] Please see Figure 1 and Figure 2The system also includes a positioning assembly 50, which comprises a base plate 51, side plates 52, guide rollers 53, and positioning rollers 54. The side plates 52 are fixed to both sides of the base plate 51. The guide rollers 53 are located at the upper end of the base plate 51 and rotatably connected to the side plates 52 at both ends. Two positioning rollers 54 are symmetrically distributed on the base plate 51. The side plates 52 have a vertically extending first groove 55, and the two ends of the guide rollers 53 are slidably connected to the first groove 55 to adjust the height of the guide rollers 53. The base plate 51 has a second groove 56, and the two positioning rollers 54 are slidably connected to the second groove 56 to adjust the distance between the two positioning rollers 54. The guide rollers 53 support the bottom of the electric busbar, and the two positioning rollers 54 clamp the electric busbar. This structure enables the electric busbar to be positioned, thereby ensuring the accuracy of subsequent processing.

[0039] Compared to existing technologies, the electromask extrusion coating device of this invention allows the electromask to be coated with different materials sequentially during its movement, thereby forming a multi-layer composite structure in a single processing cycle, effectively improving production efficiency and the bonding strength of the coating layers. The extrusion mold 10 is equipped with a thickness control component 30, including horizontally movable left and right adjustable die lips 34, which can precisely adjust the size of the discharge hole 14, ensuring the uniformity and adjustability of the coating thickness to meet the processing needs of electromasks of different specifications. Furthermore, the design of the conical injection channel 13 and the stepped transition surface 15 optimizes the flow distribution of the molten material, reduces turbulence and bubble generation, and improves the coating quality. The guide sleeve 40 and the positioning component 50 work together to precisely guide the electromask into the extrusion cavity 11, preventing deviation and ensuring the symmetry and consistency of the coating layers. The overall structure is compact, easy to operate, suitable for continuous production, and has high practicality and economy.

[0040] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An extrusion coating device for electric busbars, used for extruding and coating electric busbars, characterized in that, The electric busbar extrusion coating device includes an extrusion mold and at least one extruder. The extrusion mold has a transversely penetrating extrusion cavity inside. The extrusion cavity includes multiple extrusion channels arranged sequentially along the traveling direction of the electric busbar and gradually increasing in width. The extrusion mold has multiple injection channels corresponding to the extrusion channels. The first end of each injection channel is connected to the corresponding extrusion channel, and the second end of each injection channel is connected to the corresponding extruder. When the electric busbar travels, it passes through the multiple extrusion channels sequentially, and various materials are injected into the multiple extrusion channels to form a multi-layer coating structure on the surface of the electric busbar. The extrusion mold has a discharge hole connected to the extrusion cavity. The discharge hole has a thickness control component, which includes an upper fixed die lip, a lower fixed die lip, a left adjusting die lip, and a right adjusting die lip. The left and right adjusting die lips move horizontally relative to the upper and lower fixed die lips to control the size of the discharge hole.

2. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, The extrusion die is provided with an inlet channel, and the two ends of the inlet channel are respectively connected to the extruder and the injection channel.

3. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, The injection channel is arranged in a conical structure and surrounds the extrusion channel.

4. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, A stepped transition surface is provided between adjacent extrusion channels.

5. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, The thickness adjustment component further includes a first slide rail and a second slide rail, the left adjusting die lip is slidably connected to the first slide rail, and the right adjusting die lip is slidably connected to the second slide rail.

6. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, The thickness adjustment component includes a first driving element and a second driving element, wherein the first driving element is connected to the left adjusting die lip drive and the second driving element is connected to the right adjusting die lip drive; The first driving element and the second driving element drive the left adjusting die lip and the right adjusting die lip to move toward each other.

7. The electrostatic discharge extrusion plastic coating device according to claim 6, characterized in that, Both the first driving element and the second driving element are cylinders.

8. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, It also includes a guide sleeve, which is installed at one end of the extrusion mold and has a guide hole that is connected to the extrusion cavity.

9. The electrostatic discharge extrusion plastic coating device according to claim 1, characterized in that, It also includes a positioning component, which includes a base plate, a side plate, a guide roller, and a positioning roller; the side plate is fixed to both sides of the base plate, the guide roller is located at the upper end of the base plate and its two ends are rotatably connected to the side plate, and there are two positioning rollers, which are symmetrically distributed on the base plate.

10. The electrostatic discharge extrusion plastic coating device according to claim 9, characterized in that, The side plate is provided with a vertically extending first slide groove, and the two ends of the guide roller are slidably connected to the first slide groove to adjust the height of the guide roller; the bottom plate is provided with a second slide groove, and the two positioning rollers are slidably connected to the second slide groove to adjust the distance between the two positioning rollers.

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