Insulating copper pipe bus three-layer co-extrusion die

Abstract

The invention discloses an insulation copper pipe bus three-layer co-extrusion die, and relates to the technical field of cable production, the insulation copper pipe bus three-layer co-extrusion die comprises a protection cylinder, an inner cavity of the protection cylinder is provided with an adjusting assembly, and the adjusting assembly controls uniform distribution of flow channels of an inner ring and an outer ring; according to the three-layer co-extrusion die for the insulated copper pipe bus, when the limiting cylinder moves, the push plate arranged on the outer surface of the limiting cylinder is synchronously driven to move, and the end part of the push plate is rotationally provided with the extrusion rod, so that the push plate drives the extrusion rod to rotate around the connecting block, and one end of the extrusion rod is tightly pressed on the outer surface of a copper pipe; and impurities on the outer surface of the copper pipe are cleaned away in cooperation with the extrusion rod, and the situation that the appearance quality and subsequent machining treatment of the copper pipe are affected due to infirm combination of the insulating material and the surface of the copper pipe is avoided.

Description

Technical Field

[0001] The invention relates to a cable production technology, in particular to a three-layer co-extrusion die for an insulated copper tube busbar. Background Art

[0002] With the progress and development of electric power technology, insulated tube busbars with large current carrying capacity have been widely used, and higher requirements have been put forward for the demand and various performances of insulated tube busbars. Cable co-extrusion is a method of producing cables, which refers to the process of extruding cable materials (such as copper wire, insulating materials, etc.) through a die through a specific extruder to form a cable line. This method can effectively save materials and production costs, and can also improve the performance and quality of the cable. In the process of cable co-extrusion, the thickness and proportion of each layer of material need to be controlled to ensure the electrical and mechanical properties of the cable. The die is the main carrier of the cable extrusion process, and its design and shape will directly affect the shape and size of the extruded cable line. The die is usually made of materials such as cemented carbide or high-speed steel, and the surface is specially treated to improve its hardness and wear resistance. In cable production, the selection and design of the die is very important, which not only directly affects the quality of the cable line, but also affects the production efficiency and cost. Therefore, the design and manufacture of cable extrusion and die is one of the key technologies in the cable production process.

[0004] A Chinese invention patent with publication number CN118124117A discloses a multi-layer co-extruded cable extrusion die and extruder. The multi-layer co-extruded cable extrusion die and extruder can obtain the distance data between the relative guide rod and the installation sleeve in four dimensions through the measurement data between the cross-shaped distributed sensors and the feedback parts. The four sets of data are compared. When the distances are inconsistent, it is judged that the coaxiality of the two is eccentric. Then, the distance data is adjusted by the electric control drive. When the four sets of distance data are kept consistent, the coaxiality of the cable core and the cable can be guaranteed to avoid the eccentricity problem. Thereby greatly improving the quality of cable processing. At the same time, the adjustment process is electronically controlled and automatic, without the need for parking and manual intervention, which improves production efficiency and reduces maintenance and waste loss costs.

[0005] When the existing equipment is in use, due to the large differences in adhesion and fluidity between different materials, it is impossible to accurately control the flow rate, resulting in uneven thickness of each layer, which in turn affects the overall aesthetics. In addition, the copper tube cannot be axially positioned in the mold, which causes the copper tube to shift or bend in the mold, affecting the subsequent overall quality. Summary of the invention

[0006] The purpose of the present invention is to provide a three-layer co-extrusion die for an insulated copper tube busbar to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a three-layer co-extrusion die for an insulated copper tube busbar, comprising a protective tube, wherein the inner cavity of the protective tube is provided with an adjustment component, and the uniform distribution of the flow channels of the inner and outer rings is controlled by the adjustment component;

[0008] The outer surface of the protective tube is connected to two transmission tubes, and the ends of the two transmission tubes penetrate and extend to the inner cavity of the adjustment component;

[0009] The adjustment assembly includes a positioning cylinder connected to the protective cylinder, the cross section of the end of the positioning cylinder is inclined, and a movable cylinder is slidably mounted on the inner wall of the positioning cylinder, and the two ends of the movable cylinder are inclined in opposite directions;

[0010] The inner cavity of the positioning cylinder is provided with a movable plate, the end of the movable plate is provided with an arc-shaped groove, and the inner wall of the arc-shaped groove is slidably mounted with a positioning shaft;

[0011] A fixing 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 fixing plate, and the inner wall of the guide groove is slidably connected to the outer surface of the positioning shaft;

[0012] 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, and one end of the telescopic member away from the fixing plate is connected to the inner wall of the positioning tube;

[0013] An inclined block is disposed 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;

[0014] A pretreatment component is assembled on the inner wall of the protective tube, and the end of the pretreatment component is in contact with the end of the movable plate. Impurities on the outer surface of the copper tube are removed by the pretreatment component.

[0015] As a further optimization solution of the present invention, the pretreatment component includes a support block connected to the protective tube, a positioning plate is provided at the end of the support block, and a hole is opened at the end of the positioning plate.

[0016] As a further optimization solution of the present invention, a sleeve is provided at the end of the positioning plate, and a plurality of groups of through holes are opened on the outer surface of the sleeve, and the plurality of groups of through holes are evenly distributed on the outer surface of the sleeve.

[0017] As a further optimization solution of the present invention, a slot is formed at one end of the sleeve away from the positioning plate, and a limiting cylinder is provided on the inner wall of the slot.

[0018] As a further optimization solution of the present invention, an elastic member is provided at the end of the limiting cylinder, and one end of the elastic member away from the limiting cylinder is connected to the end of the positioning plate.

[0019] As a further optimization scheme of the present invention, multiple groups of push plates are rotatably installed on the outer surface of the limiting cylinder, and the multiple groups of push plates are evenly distributed on the outer surface of the limiting cylinder, and the ends of the push plates penetrate and extend to the outside of the through hole.

[0020] As a further optimization solution of the present invention, an extrusion rod is rotatably mounted on the end of the push plate, and the end of the extrusion rod away from the push plate is arc-shaped.

[0021] As a further optimization solution 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.

[0022] As a further optimization solution of the present invention, a collecting groove is provided at the end of the sleeve and located on one side of the slot.

[0023] As a further optimization solution of the present invention, the inner wall of the slot is connected to the inner wall of the hole.

[0024] Compared with the prior art, the three-layer co-extrusion die for an insulated copper tube busbar provided by the present invention has the following beneficial effects: when the movable plate rotates, the arc groove opened at its end drives the positioning shaft to move, and since the outer surface of the positioning shaft is also slidingly 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 toward the middle or outward; when the positioning shaft moves, the inclined block arranged at its end is synchronously driven to move, and since the outer surface of the inclined block fits with the inner wall of the movable cylinder, when the inclined block moves, the movable cylinder is driven to move, thereby adjusting the distance between the movable cylinder and the positioning cylinder to make it suitable for different scenarios.

[0025] When the limiting cylinder moves, the push plate arranged on its outer surface is synchronously driven to move. Since the end of the push plate is rotatably installed with an extrusion rod, the push plate drives the extrusion rod to rotate around the connecting block, so that one end of the extrusion rod is tightly pressed against the outer surface of the copper tube. When the copper tube is transported, the extrusion rod is cooperated to clean the impurities on the outer surface of the copper tube to avoid the subsequent insulation material and the copper tube surface The surface is not firmly bonded, which affects the appearance quality of the copper tube and its subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A first schematic diagram of the overall structure provided by an embodiment of the present invention;

[0028] Figure 2 A second schematic diagram of the overall structure provided by an embodiment of the present invention;

[0029] Figure 3 A cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0030] Figure 4 An exploded diagram of the structure of the regulating component provided by an embodiment of the present invention;

[0031] Figure 5 A cross-sectional view of the internal structure of the adjustment component provided by an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the structure of the movable plate and the fixed plate provided in an embodiment of the present invention;

[0033] Figure 7 A cross-sectional view of the internal structure of the movable plate and the fixed plate provided in an embodiment of the present invention;

[0034] Figure 8 A first schematic diagram of the structure of a preprocessing component provided in an embodiment of the present invention;

[0035] Fig. 9 A second schematic diagram of the preprocessing component structure provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Protective cylinder; 2. Adjustment component; 3. Pretreatment component; 11. Transmission tube; 21. Positioning cylinder; 22. Movable cylinder; 23. Movable plate; 231. Arc groove; 24. Fixed plate; 241. Guide groove; 25. Positioning shaft; 26. Oblique block; 27. Annular groove; 271. Telescopic member; 31. Positioning plate; 311. Support block; 312. Hole; 32. Sleeve; 321. Through hole; 322. Slotted hole; 33. Limiting cylinder; 34. Elastic member; 35. Push plate; 36. Extrusion rod; 37. Connecting block; 38. Collecting tank. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example: See Figure 1-Figure 9 A three-layer co-extrusion die for an insulated copper tube busbar includes a protective tube 1, an inner cavity of the protective tube 1 is provided with an adjustment component 2, and the flow channels of the inner and outer rings are evenly distributed by the adjustment component 2. The outer surface of the protective tube 1 is connected to two transmission tubes 11, and the ends of the two transmission tubes 11 penetrate and extend to the inner cavity of the adjustment component 2.

[0041] In this solution, external insulating solutions are transmitted to the inside of the regulating component 2 through the transmission tube 11, and the regulating component 2 is used to transport the insulating solution. The flow rate of the solution is adjusted according to the actual state to make it suitable for different scenarios and ensure that the solution is tightly attached to the outer surface of the copper tube.

[0042] Two adjusting components 2 are sequentially arranged on the inner wall of the protective tube 1, and then the copper tube is extruded multiple times so that the processed components meet the standards.

[0043] Furthermore, the adjustment assembly 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 mounted on the inner wall of the positioning cylinder 21, and the two ends of the movable cylinder 22 are oppositely inclined.

[0044] In this embodiment, the position of the movable cylinder 22 is adjusted, and the size of the gap between the movable cylinder 22 and the positioning cylinder 21 is controlled, thereby adjusting the flow rate of the solution to ensure the consistency, quality and production efficiency of the product.

[0045] 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, and at the same time ensures that the movable cylinder 22 remains stable as a whole when moving.

[0046] Furthermore, a movable plate 23 is provided in the inner cavity of the positioning cylinder 21, an arc groove 231 is provided at the end of the movable plate 23, and a positioning shaft 25 is slidably installed on the inner wall of the arc groove 231; a fixed plate 24 is provided in the inner cavity of the positioning cylinder 21 and located on one side of the movable plate 23, a guide groove 241 is provided at the end of the fixed plate 24, and the inner wall of the guide groove 241 is slidably connected to the outer surface of the positioning shaft 25.

[0047] 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 is started, the gear arranged at its output end drives the movable plate 23 to rotate, wherein the outer surface of the movable plate 23 is provided with convex teeth, which are used to mesh with the gear at the output end of the motor.

[0048] At the same time, when the movable plate 23 rotates, the arc groove 231 opened at its end drives the positioning shaft 25 to move. Since the outer surface of the positioning shaft 25 is also slidingly 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 toward the middle or outward.

[0049] Furthermore, an annular groove 27 is disposed on the outer surface of the fixing plate 24 , and a telescopic member 271 is disposed on the inner wall of the annular groove 27 . One end of the telescopic member 271 away from the fixing plate 24 is connected to the inner wall of the positioning tube 21 .

[0050] Specifically, the telescopic member 271 is a device with a telescopic function such as an electric telescopic rod, and is connected to an external control device. A rubber block is provided at the output end of the telescopic member 271. When the telescopic member 271 is started, the rubber block is engaged with the inner wall of the positioning tube 21 to ensure the stability of the fixed plate 24.

[0051] Furthermore, an inclined block 26 is provided at the end of the positioning shaft 25 , and the outer surface of the inclined block 26 is slidably connected to the inner wall of the movable cylinder 22 .

[0052] Specifically, when the positioning shaft 25 moves, the inclined block 26 arranged at its end is synchronously driven to move. Since the outer surface of the inclined block 26 fits the inner wall of the movable cylinder 22, when the inclined block 26 moves, the movable cylinder 22 is driven to move, thereby adjusting the distance between the movable cylinder 22 and the positioning cylinder 21 to make it suitable for different scenarios.

[0053] Furthermore, the pretreatment component 3 is mounted on the inner wall of the protective tube 1, and the end of the pretreatment component 3 is in contact with the end of the movable plate 23, and impurities on the outer surface of the copper tube are removed by the pretreatment component 3. The pretreatment component 3 includes a support block 311 connected to the protective tube 1, and a positioning plate 31 is provided at the end of the support block 311, and a hole 312 is opened at the end of the positioning plate 31.

[0054] In this embodiment, the entire pre-treatment component 3 is supported by the support block 311 , so that the pre-treatment component 3 is stably disposed inside the protective tube 1 as a whole.

[0055] At the same time, the hole 312 is used to limit the copper tube so that the copper tube is centered during transportation, thereby ensuring that the solution is evenly applied to the outer surface of the copper tube during subsequent processing, thereby reducing the uneven distribution of the solution.

[0056] Furthermore, a sleeve 32 is provided at the end of the positioning plate 31, and a plurality of through holes 321 are provided on the outer surface of the sleeve 32, and the plurality of through holes 321 are evenly distributed on the outer surface of the sleeve 32. A slot 322 is provided at one end of the sleeve 32 away from the positioning plate 31, and a limiting cylinder 33 is provided on the inner wall of the slot 322.

[0057] Specifically, a fixing ring is provided on the outer surface of the limiting cylinder 33, and the limiting cylinder 33 is supported by the fixing ring to prevent the limiting cylinder 33 from deviating from the set position.

[0058] At the same time, a docking block is provided on the outer surface of the fixed ring. The rotation of the docking block and the push plate 35 controls the upward and downward movement of the limit cylinder 33, which can drive the push plate 35 to move, and the through hole 321 provides a movable space for the push plate 35 to prevent the push plate 35 from colliding when moving.

[0059] Furthermore, an elastic member 34 is disposed at the end of the limiting cylinder 33 , and one end of the elastic member 34 away from the limiting cylinder 33 is connected to the end of the positioning plate 31 .

[0060] Specifically, the elastic member 34 is an elastic member such as a spring, which is used to support the limiting cylinder 33 so that the limiting cylinder 33 and the extrusion rod 36 are always in the best position to ensure the stability of the copper tube.

[0061] Further, multiple groups of push plates 35 are rotatably mounted on the outer surface of the limiting cylinder 33, and the multiple groups of push plates 35 are evenly distributed on the outer surface of the limiting cylinder 33, and the ends of the push plates 35 penetrate and extend to the outside of the through hole 321. An extrusion rod 36 is rotatably mounted on the end of the push plate 35, and the end of the extrusion rod 36 away from the push plate 35 is 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 extrusion rod 36.

[0062] Specifically, when the limiting cylinder 33 moves, the push plate 35 arranged on its outer surface is synchronously driven to move. Since the end of the push plate 35 is rotatably installed with an extrusion rod 36, the push plate 35 drives the extrusion rod 36 to rotate around the connecting block 37, so that one end of the extrusion rod 36 is tightly pressed against the outer surface of the copper tube. When the copper tube is transported, the extrusion rod 36 is cooperated to clean the impurities on the outer surface of the copper tube to avoid the subsequent insulation material and the copper tube surface The surface is not firmly bonded, which affects the appearance quality of the copper tube and its subsequent processing.

[0063] Furthermore, a collecting groove 38 is provided at the end of the sleeve 32 and at one side of the slot 322 . The inner wall of the slot 322 is connected to the inner wall of the hole 312 .

[0064] Specifically, when the extrusion rod 36 cleans the outer surface of the copper tube, the scraper arranged on the outer surface of the collecting tank 38 performs secondary cleaning on the loose impurities, thereby ensuring that the insulating material fits better with the surface of the copper tube.

[0065] At the same time, the scraped impurities are collected on the inner wall of the collecting tank 38, which is convenient for subsequent cleaning.

[0066] The control device can select a single-chip microcomputer as the control end. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller Unit), which is composed of an arithmetic unit, a controller, a memory, an input and output device, etc., and is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but has a small storage capacity, a simple input and output interface, and low functional consumption.

[0067] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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 an insulated copper tube busbar, characterized in that: It comprises a protective tube (1), wherein the inner cavity of the protective tube (1) is provided with an adjustment component (2), and the uniform distribution of the flow channels of the inner and outer rings is controlled by the adjustment component (2); The outer surface of the protective tube (1) is connected to two transmission tubes (11), and the ends of the two transmission tubes (11) penetrate and extend to the inner cavity of the adjustment component (2); The adjustment assembly (2) comprises 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 mounted 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), the end of the movable plate (23) is provided with an arc-shaped groove (231), and the inner wall of the arc-shaped groove (231) is slidably mounted with a positioning shaft (25); A fixing 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 fixing plate (24); and 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), and one end of the telescopic member (271) away from the fixing plate (24) is connected to the inner wall of the positioning tube (21); An inclined block (26) is provided at the end of the positioning shaft (25), 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 mounted on the inner wall of the protective tube (1), and the end of the pretreatment component (3) is in contact with the end of the movable plate (23). Impurities on the outer surface of the copper tube are removed by the pretreatment component (3).

2. The three-layer co-extrusion die for an insulated copper tube busbar according to claim 1, characterized in that: The pretreatment component (3) comprises a support block (311) connected to the protective tube (1), a positioning plate (31) is provided at the end of the support block (311), and a hole (312) is opened at the end of the positioning plate (31).

3. The three-layer co-extrusion die for an insulated copper tube busbar according to claim 2, characterized in that: A sleeve (32) is provided at the end of the positioning plate (31), and a plurality of groups of through holes (321) are provided on the outer surface of the sleeve (32), and the plurality of groups of through holes (321) are evenly distributed on the outer surface of the sleeve (32).

4. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 3, characterized in that: A slot hole (322) is formed at one end of the sleeve (32) away from the positioning plate (31), and a limiting cylinder (33) is provided on the inner wall of the slot hole (322).

5. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 4, characterized in that: An elastic member (34) is provided at the end of the limiting cylinder (33), and one end of the elastic member (34) away from the limiting cylinder (33) is connected to the end of the positioning plate (31).

6. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 5, characterized in that: A plurality of push plates (35) are rotatably mounted on the outer surface of the limiting cylinder (33), and the plurality of push plates (35) are evenly distributed on the outer surface of the limiting cylinder (33), and ends of the push plates (35) penetrate through and extend to the outside of the through hole (321).

7. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 6, characterized in that: An extrusion rod (36) is rotatably mounted on the end of the push plate (35), and one end of the extrusion rod (36) away from the push plate (35) is arc-shaped.

8. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 7, characterized in that: 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).

9. The three-layer co-extrusion die for the insulated copper tube busbar according to claim 8, characterized in that: A collecting groove (38) is provided at the end of the sleeve (32) and located on one side of the slot hole (322).

10. The three-layer co-extrusion die for an insulated copper tube busbar according to claim 9, characterized in that: The inner wall of the slot (322) is connected to the inner wall of the hole (312).

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