Three-layer co-extrusion die for insulated copper tube busbar

Abstract

The application discloses a three-layer co-extrusion die for an insulated copper tube bus, and relates to the technical field of cable production.The three-layer co-extrusion die for the insulated copper tube bus comprises a protection cylinder, and an adjusting assembly is arranged in the inner cavity of the protection cylinder.The adjusting assembly is used for controlling the uniform distribution of flow channels of the inner ring and the outer ring.The three-layer co-extrusion die is characterized in that when the limiting cylinder moves, the push plate arranged on the outer surface of the limiting cylinder is synchronously driven to move.The end of the push plate is rotatably connected with the extruding rod, so that the push plate drives the extruding rod to rotate around the connecting block, and one end of the extruding rod is tightly pressed against the outer surface of the copper tube.When the copper tube is conveyed, the extruding rod is used for cleaning the impurities on the outer surface of the copper tube, so that the subsequent combination of the insulating material and the surface of the copper tube is not loose, and the appearance quality of the copper tube and the subsequent processing of the copper tube are not affected.

Description

Technical Field

[0001] This invention relates to cable manufacturing technology, specifically to a three-layer co-extrusion mold for insulated copper tube busbars. Background Technology

[0002] With the advancement and development of power technology, insulated busbars with high current-carrying capacity have been widely used, placing higher demands on their performance and requirements. Cable co-extrusion is a method of cable production, referring to the process of extruding cable materials (such as copper wire and insulation materials) through a die using a specific extruder to form a cable. This method can effectively save materials and production costs while improving cable performance and quality. During cable co-extrusion, it is necessary to control the thickness and proportion of each layer of material to ensure the electrical and mechanical properties of the cable. The die is the main carrier in the cable extrusion process, and its design and shape directly affect the shape and size of the extruded cable. Dies are usually made of materials such as hard alloy or high-speed steel, with special surface treatments to improve their hardness and wear resistance. In cable production, the selection and design of the die are crucial, directly affecting not only the quality of the cable but also production efficiency and cost. Therefore, cable extrusion and die design and manufacturing are key technologies in the cable production process.

[0003] Chinese invention patent CN118124117A discloses a multi-layer co-extrusion cable extrusion die and extruder. This die and extruder, through measurement data between cross-shaped sensors and feedback components, can obtain distance data between the guide rod and the mounting sleeve in four dimensions. By comparing the four sets of data, if the distances are inconsistent, it is determined that there is an eccentricity in the coaxiality. The distance data is then adjusted electronically to ensure consistency across the four sets, thus guaranteeing the coaxiality of the cable core and the cable and avoiding eccentricity issues. This significantly improves the quality of cable processing. Furthermore, the adjustment process is automatically controlled electronically, eliminating the need for shutdown and manual intervention, thereby increasing production efficiency and reducing maintenance and waste costs.

[0004] When using existing equipment, the large differences in adhesion and flowability between different materials make it impossible to accurately control the flow rate, resulting in uneven thickness of each layer, which affects the overall aesthetics. Furthermore, the copper tube cannot be axially positioned in the mold, causing it to shift or bend within the mold, affecting the overall quality. Summary of the Invention

[0005] The purpose of this invention is to provide a three-layer co-extrusion mold for insulated copper tube busbars to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a three-layer co-extrusion die for an insulated copper tube busbar, comprising a protective cylinder, wherein an adjustment component is provided in the inner cavity of the protective cylinder, and the flow channels of the inner and outer rings are uniformly distributed through the adjustment component;

[0007] The outer surface of the protective cylinder is connected to two transmission pipes, and the ends of the two transmission pipes penetrate and extend into the inner cavity of the adjustment assembly.

[0008] The adjusting component includes a positioning cylinder connected to the protective cylinder. The cross-section of the end of the positioning cylinder is inclined. Meanwhile, a movable cylinder is slidably installed on the inner wall of the positioning cylinder, and the two ends of the movable cylinder are inclined in opposite directions.

[0009] The inner cavity of the positioning cylinder is provided with a movable plate, and the end of the movable plate is provided with an arc-shaped groove. A positioning shaft is slidably installed on the inner wall of the arc-shaped groove.

[0010] A fixed plate is provided in the inner cavity of the positioning cylinder and on one side of the movable plate. A guide groove is provided at the end of the fixed plate, and the inner wall of the guide groove is slidably connected to the outer surface of the positioning shaft.

[0011] The outer surface of the fixing plate is provided with an annular groove, and the inner wall of the annular groove is provided with a telescopic member. The end of the telescopic member away from the fixing plate is connected to the inner wall of the positioning cylinder.

[0012] An inclined block is provided at the end of the positioning shaft, and the outer surface of the inclined block is slidably connected to the inner wall of the movable cylinder;

[0013] A pretreatment component is assembled on the inner wall of the protective cylinder, and the end of the pretreatment component is attached to the end of the movable plate. The pretreatment component removes impurities from the outer surface of the copper tube.

[0014] As a further optimization of the present invention, the pretreatment component includes a support block connected to the protective cylinder, and a positioning plate is provided at the end of the support block, while the end of the positioning plate is provided with a hole.

[0015] As a further optimization of the present invention, the end of the positioning plate is provided with a sleeve, and the outer surface of the sleeve is provided with multiple sets of through holes, and the multiple sets of through holes are evenly distributed on the outer surface of the sleeve.

[0016] As a further optimization of the present invention, a slot is provided at the end of the sleeve away from the positioning plate, and a limiting sleeve is provided on the inner wall of the slot.

[0017] As a further optimization of the present invention, an elastic element is provided at the end of the limiting cylinder, and the end of the elastic element away from the limiting cylinder is connected to the end of the positioning plate.

[0018] As a further optimization of the present invention, multiple sets of push plates are rotatably mounted on the outer surface of the limiting cylinder, and the multiple sets of push plates are evenly distributed on the outer surface of the limiting cylinder, while the ends of the push plates penetrate through and extend to the outside of the through hole.

[0019] As a further optimization of the present invention, a pressing rod is rotatably mounted on the end of the push plate, and the end of the pressing rod away from the push plate is arc-shaped.

[0020] As a further optimization of the present invention, a connecting block is provided on the inner wall of the through hole, and the end of the connecting block is rotatably connected to the outer surface of the extrusion rod.

[0021] As a further optimization of the present invention, a collection groove is provided at the end of the sleeve and on one side of the slot.

[0022] As a further optimization of the present invention, the inner wall of the slot is connected to the inner wall of the hole.

[0023] Compared with the prior art, the three-layer co-extrusion die for insulated copper tube busbar provided by the present invention has the following beneficial effects: When the movable plate rotates, it drives the positioning shaft to move in conjunction with the arc-shaped groove opened at its end. Since the outer surface of the positioning shaft is also slidably connected to the inner wall of the guide groove, the positioning shaft moves along the inner wall of the guide groove, and the positioning rod expands towards the middle or outward. When the positioning shaft moves, it synchronously drives the inclined block set at its end to move. Since the outer surface of the inclined block is in contact with the inner wall of the movable cylinder, the movable cylinder is driven to move when the inclined block moves, thereby adjusting the distance between the movable cylinder and the positioning cylinder, making it suitable for different scenarios.

[0024] When the limiting cylinder moves, it synchronously drives the push plate set on its outer surface to move. Since the end of the push plate is rotatably installed with a pressing rod, the push plate drives the pressing rod to rotate around the connecting block, so that one end of the pressing rod is pressed tightly against the outer surface of the copper tube. When the copper tube is transported, it works with the pressing rod to clean the impurities on the outer surface of the copper tube, so as to avoid the subsequent insulation material not being firmly bonded to the surface of the copper tube, which would affect the appearance quality of the copper tube and its subsequent processing. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1This is a first schematic diagram of the overall structure provided in an embodiment of the present invention;

[0027] Figure 2 This is a second schematic diagram of the overall structure provided in an embodiment of the present invention;

[0028] Figure 3 A cross-sectional view of the overall internal structure provided in an embodiment of the present invention;

[0029] Figure 4 An exploded view of the adjustment component structure provided in an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the internal structure of the adjustment component provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the movable plate and fixed plate structure provided in an embodiment of the present invention;

[0032] Figure 7 This is a cross-sectional view of the internal structure of the movable plate and the fixed plate provided in an embodiment of the present invention;

[0033] Figure 8 This is a first schematic diagram of the preprocessing component structure provided in an embodiment of the present invention;

[0034] Figure 9 This is a second schematic diagram of the preprocessing component structure provided in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Protective cylinder; 2. Adjustment assembly; 3. Pretreatment assembly; 11. Transmission pipe; 21. Positioning cylinder; 22. Movable cylinder; 23. Movable plate; 231. Arc groove; 24. Fixed plate; 241. Guide groove; 25. Positioning shaft; 26. Inclined block; 27. Annular groove; 271. Telescopic component; 31. Positioning plate; 311. Support block; 312. Hole; 32. Sleeve; 321. Through hole; 322. Slot; 33. Limiting cylinder; 34. Elastic component; 35. Push plate; 36. Extrusion rod; 37. Connecting block; 38. Collection trough. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the invention and for 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 the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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 an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Example: Please refer to Figures 1-9 A three-layer co-extrusion die for an insulated copper tube busbar includes a protective cylinder 1. An adjusting component 2 is provided in the inner cavity of the protective cylinder 1 to control the uniform distribution of the flow channels in the inner and outer rings. Two transmission pipes 11 are connected to the outer surface of the protective cylinder 1, and the ends of the two transmission pipes 11 penetrate through and extend into the inner cavity of the adjusting component 2.

[0040] In this solution, external insulating solutions are transferred to the regulating component 2 via the transmission pipe 11. The regulating component 2 then transports the insulating solution and adjusts the flow rate of the solution according to the actual conditions to make it suitable for different scenarios, ensuring that the solution adheres tightly to the outer surface of the copper pipe.

[0041] Two adjusting components 2 are sequentially installed on the inner wall of the protective cylinder 1, which then extrudes the copper tube multiple times, so that the processed parts meet the standards.

[0042] Furthermore, the adjusting component 2 includes a positioning cylinder 21 connected to the protective cylinder 1. The cross-section of the end of the positioning cylinder 21 is inclined, and a movable cylinder 22 is slidably installed on the inner wall of the positioning cylinder 21, with the two ends of the movable cylinder 22 being inclined in opposite directions.

[0043] In this embodiment, by adjusting the position of the movable cylinder 22, the size of the gap between the movable cylinder 22 and the positioning cylinder 21 is controlled, thereby adjusting the solution flow rate and ensuring product consistency, quality and production efficiency.

[0044] The outer surface of the movable cylinder 22 is provided with a ring, and the outer surface of the ring is provided with a sealing component such as rubber. The outer surface of the ring is slidably connected to the inner wall of the positioning cylinder 21, which ensures that the movable cylinder 22 remains stable as a whole when it moves.

[0045] Furthermore, the inner cavity of the positioning cylinder 21 is provided with a movable plate 23, and the end of the movable plate 23 is provided with an arc-shaped groove 231. The inner wall of the arc-shaped groove 231 is slidably installed with a positioning shaft 25. The inner cavity of the positioning cylinder 21 and located on one side of the movable plate 23 is provided with a fixed plate 24, and the end of the fixed plate 24 is provided with a guide groove 241. The inner wall of the guide groove 241 is slidably connected to the outer surface of the positioning shaft 25.

[0046] Specifically, the outer surface of the movable plate 23 is provided with a device with power output such as a motor, and is connected to an external control device. When the motor starts, it works with the gear set at its output end to drive the movable plate 23 to rotate. The outer surface of the movable plate 23 is provided with protruding teeth, which are used to mesh with the gear at the output end of the motor.

[0047] At the same time, when the movable plate 23 rotates, the arc-shaped groove 231 opened at its end drives the positioning shaft 25 to move. Since the outer surface of the positioning shaft 25 is also slidably connected to the inner wall of the guide groove 241, the positioning shaft 25 moves along the inner wall of the guide groove 241, and the positioning rod 25 expands towards the middle or outward.

[0048] Furthermore, the outer surface of the fixing plate 24 is provided with an annular groove 27, and the inner wall of the annular groove 27 is provided with a telescopic member 271, the end of the telescopic member 271 away from the fixing plate 24 is connected to the inner wall of the positioning cylinder 21.

[0049] Specifically, the telescopic component 271 is an electric telescopic rod or other device with telescopic function, and is connected to an external control device. The output end of the telescopic component 271 is provided with a rubber block. When the telescopic component 271 is activated, the rubber block engages with the inner wall of the positioning cylinder 21 to ensure the stability of the fixing plate 24.

[0050] Furthermore, the end of the positioning shaft 25 is provided with an inclined block 26, and the outer surface of the inclined block 26 is slidably connected to the inner wall of the movable cylinder 22.

[0051] Specifically, when the positioning shaft 25 moves, it synchronously drives the inclined block 26 set at its end to move. Since the outer surface of the inclined block 26 is in contact with the inner wall of the movable cylinder 22, the movement of the inclined block 26 drives the movable cylinder 22 to move, thereby adjusting the distance between the movable cylinder 22 and the positioning cylinder 21, making it suitable for different scenarios.

[0052] Furthermore, the pretreatment component 3 is assembled on the inner wall of the protective cylinder 1, and the end of the pretreatment component 3 is attached to the end of the movable plate 23. The pretreatment component 3 removes impurities from the outer surface of the copper tube. The pretreatment component 3 includes a support block 311 connected to the protective cylinder 1. The end of the support block 311 is provided with a positioning plate 31, and the end of the positioning plate 31 is provided with a hole 312.

[0053] In this embodiment, the entire pretreatment component 3 is supported by the support block 311, so that the pretreatment component 3 is stably set inside the protective cylinder 1.

[0054] At the same time, the copper tube is constrained by the hole 312, which ensures that the copper tube is centered during transportation, thereby ensuring that the solution is evenly coated on the outer surface of the copper tube during subsequent processing and reducing uneven solution distribution.

[0055] Furthermore, a sleeve 32 is provided at the end of the positioning plate 31. Multiple sets of through holes 321 are formed on the outer surface of the sleeve 32, and the multiple sets of through holes 321 are evenly distributed on the outer surface of the sleeve 32. A slot 322 is formed at the end of the sleeve 32 away from the positioning plate 31, and a limit sleeve 33 is provided on the inner wall of the slot 322.

[0056] Specifically, a fixing ring is provided on the outer surface of the limiting cylinder 33 to support the limiting cylinder 33 and prevent the limiting cylinder 33 from deviating from the set position.

[0057] Meanwhile, the outer surface of the fixed ring is provided with a docking block. By rotating the docking block and the push plate 35, the limit cylinder 33 can be controlled to move up and down, which can drive the push plate 35 to move. The through hole 321 provides the push plate 35 with a space to move, preventing the push plate 35 from colliding when it moves.

[0058] Furthermore, an elastic element 34 is provided at the end of the limiting cylinder 33, and the end of the elastic element 34 away from the limiting cylinder 33 is connected to the end of the positioning plate 31.

[0059] Specifically, the elastic element 34 is a spring or other elastic component, which is used to support the limiting cylinder 33 so that the limiting cylinder 33 and the pressing rod 36 are always in the optimal position to ensure the stability of the copper tube.

[0060] Furthermore, multiple sets of push plates 35 are rotatably mounted on the outer surface of the limiting cylinder 33, and these push plates 35 are evenly distributed on the outer surface of the limiting cylinder 33. The ends of the push plates 35 penetrate and extend to the outside of the through hole 321. A pressing rod 36 is rotatably mounted on the end of each push plate 35, with the end of the pressing rod 36 away from the push plate 35 being arc-shaped. A connecting block 37 is provided on the inner wall of the through hole 321, and the end of the connecting block 37 is rotatably connected to the outer surface of the pressing rod 36.

[0061] Specifically, when the limiting cylinder 33 moves, it synchronously drives the push plate 35 set on its outer surface to move. Since the end of the push plate 35 is rotatably installed with the pressing rod 36, the push plate 35 drives the pressing rod 36 to rotate around the connecting block 37, so that one end of the pressing rod 36 is pressed tightly against the outer surface of the copper tube. When the copper tube is transported, the pressing rod 36 works together to clean the impurities on the outer surface of the copper tube, so as to avoid the subsequent insulation material not being firmly bonded to the surface of the copper tube, which would affect the appearance quality of the copper tube and its subsequent processing.

[0062] Furthermore, a collection groove 38 is provided at the end of the sleeve 32 and on one side of the slot 322. The inner wall of the slot 322 is connected to the inner wall of the hole 312.

[0063] Specifically, when the extrusion rod 36 cleans the outer surface of the copper tube, a scraper set on the outer surface of the collection tank 38 is used to perform secondary cleaning of loose impurities, thereby ensuring that the insulating material adheres better to the surface of the copper tube.

[0064] Meanwhile, the scraped impurities are concentrated on the inner wall of the collection tank 38, making it easier to clean later.

[0065] The control device can be a microcontroller. In this embodiment, the microcontroller is a typical embedded microcontroller unit, consisting of an arithmetic logic unit (ALU), a controller, memory, input / output devices, etc., essentially a miniature computer. Compared to general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its biggest advantages are its small size, allowing it to be placed inside the instrument, but it has limited storage, simple input / output interfaces, and low power consumption.

[0066] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A three-layer co-extrusion die for insulated copper tube busbars, characterized in that, Includes a protective cylinder (1), the inner cavity of which is provided with an adjustment component (2), through which the flow channels of the inner and outer rings are evenly distributed; The outer surface of the protective cylinder (1) is connected to two transmission pipes (11), and the ends of the two transmission pipes (11) penetrate and extend into the inner cavity of the adjustment assembly (2); The adjustment component (2) includes a positioning cylinder (21) connected to the protective cylinder (1). The cross-section of the end of the positioning cylinder (21) is inclined. Meanwhile, a movable cylinder (22) is slidably installed on the inner wall of the positioning cylinder (21), and the two ends of the movable cylinder (22) are inclined in opposite directions. The inner cavity of the positioning cylinder (21) is provided with a movable plate (23), and the end of the movable plate (23) is provided with an arc groove (231). The inner wall of the arc groove (231) is slidably installed with a positioning shaft (25). A fixed plate (24) is provided in the inner cavity of the positioning cylinder (21) and on one side of the movable plate (23). A guide groove (241) is provided at the end of the fixed plate (24). The inner wall of the guide groove (241) is slidably connected to the outer surface of the positioning shaft (25). The outer surface of the fixing plate (24) is provided with an annular groove (27), and the inner wall of the annular groove (27) is provided with a telescopic member (271). The end of the telescopic member (271) away from the fixing plate (24) is connected to the inner wall of the positioning cylinder (21). The end of the positioning shaft (25) is provided with an inclined block (26), and the outer surface of the inclined block (26) is slidably connected to the inner wall of the movable cylinder (22); A pretreatment component (3) is assembled on the inner wall of the protective cylinder (1), and the end of the pretreatment component (3) is attached to the end of the movable plate (23). The pretreatment component (3) removes impurities from the outer surface of the copper tube. The pretreatment component (3) includes a support block (311) connected to the protective cylinder (1), and a positioning plate (31) is provided at the end of the support block (311), while a hole (312) is opened at the end of the positioning plate (31). The end of the positioning plate (31) is provided with a sleeve (32), and the outer surface of the sleeve (32) is provided with multiple sets of through holes (321), and the multiple sets of through holes (321) are evenly distributed on the outer surface of the sleeve (32). The sleeve (32) has a slot (322) at one end away from the positioning plate (31), and a limit sleeve (33) is provided on the inner wall of the slot (322); An elastic element (34) is provided at the end of the limiting cylinder (33), and the end of the elastic element (34) away from the limiting cylinder (33) is connected to the end of the positioning plate (31). Multiple sets of push plates (35) are rotatably mounted on the outer surface of the limiting cylinder (33), and the multiple sets of push plates (35) are evenly distributed on the outer surface of the limiting cylinder (33). At the same time, the ends of the push plates (35) penetrate through and extend to the outside of the through hole (321). A pressing rod (36) is rotatably mounted on the end of the push plate (35), and the end of the pressing rod (36) away from the push plate (35) is arc-shaped; The inner wall of the through hole (321) is provided with a connecting block (37), and the end of the connecting block (37) is rotatably connected to the outer surface of the extrusion rod (36).

2. The three-layer co-extrusion die for an insulated copper tube busbar according to claim 1, characterized in that, A collection groove (38) is provided at the end of the sleeve (32) and on one side of the slot (322).

3. The three-layer co-extrusion die for an insulated copper tube busbar according to claim 2, characterized in that, The inner wall of the slot (322) is connected to the inner wall of the hole (312).

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