Conductor traction mold with circulating cooling and cleaning function

Abstract

The utility model discloses a kind of conductor traction mould with circulating cooling cleaning function, the device includes mould, the outer sleeve of being sleeved in the outside of mould and the mould box assembled in one end. Conductor traction direction is successively provided with taper reducing diameter portion and straightening portion in mould inside, annular outer flow channel is opened in mould side wall, and taper reducing diameter portion peripheral side is equipped with the liquid injection port being communicated with outer flow channel;Mould inside is also opened inner flow channel, and taper reducing diameter portion is equipped with the liquid suction port being communicated with inner flow channel, and inner flow channel end is communicated with the through-hole of mould end portion. The outer sleeve is interference fit with mould, and the liquid inlet hole and liquid outlet hole opened on it are respectively sealed with outer flow channel and through-hole Communication. The utility model is realized by the unique circulating flow channel design, realizes the directional injection and instant extraction of emulsion in mould core work area, effectively solves the technical problem that traditional mould is not evenly cooled, not cleaned, significantly improves cooling efficiency, product quality and mould service life.

Description

Technical Field

[0001] This utility model belongs to the field of metal conductor processing technology, and in particular relates to a conductor traction mold with circulating cooling and cleaning function. Background Technology

[0002] In the production of conductors such as wires, cables, and metal wires, traction drawing is a crucial forming process. When the conductor material passes through the diameter reduction zone of the die, it undergoes intense plastic deformation and generates strong friction against the inner wall of the die, accumulating a significant amount of heat. If this heat cannot be dissipated in time, the excessively high temperature will reduce the mechanical properties of the conductor material and may even trigger annealing, affecting the product's strength and toughness. High temperatures accelerate the wear of the die's working surface, shortening its lifespan. Metal debris generated during friction, if not removed promptly, will adhere to the conductor or die surface, scratching the conductor, affecting the product's surface finish, and causing die blockage.

[0003] To address these issues, existing technologies typically employ cooling or lubrication by applying coolant or emulsion to the mold area. These methods often utilize open external flushing or simple internal flow channel designs, spraying coolant directly onto the mold exterior and passing conductors. This approach suffers from low cooling efficiency, poor liquid utilization, and difficulty in effectively cooling and cleaning the core diameter-reducing area inside the mold, leading to heat and debris accumulation in critical areas.

[0004] Another approach is to install cooling channels inside the mold, with a one-way inlet channel, allowing the emulsion to flow directly out after passing through the mold cavity. However, this approach has significant drawbacks: First, the short coolant flow path leads to uneven coolant distribution, insufficient contact time with high-temperature areas, inadequate heat exchange, and low cooling efficiency. Second, the lack of a targeted negative pressure suction design makes it impossible to quickly remove the emulsion mixed with friction debris and high temperature from the core working area, resulting in poor cleaning performance and debris residue that can easily scratch the conductor surface.

[0005] Therefore, there is an urgent need in this field for a new type of cooling and cleaning device to achieve efficient and uniform cooling and cleaning of the core diameter reduction area of ​​the conductor traction mold. Utility Model Content

[0006] The purpose of this invention is to provide a conductor traction mold with a circulating cooling and cleaning function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the following technical solution is provided: a conductor traction mold with circulating cooling and cleaning function, comprising a mold and an outer sleeve fitted outside the mold, wherein a mold box is assembled at one end of the mold.

[0008] The mold has a tapered diameter reduction section and a straightening section arranged sequentially along the conductor traction direction. The tapered diameter reduction section is used to reduce the diameter of the conductor passing through, and the straightening section is used to straighten the conductor passing through. An annular outer guide groove is provided inside the side wall of the mold, and a liquid spraying port communicating with the outer guide groove is provided on the periphery of the tapered diameter reduction section. The mold also has an internal guide channel, and the tapered reducing part has a liquid suction port that communicates with the internal guide channel. One end of the internal guide channel has a through hole. The emulsion can be sprayed onto the conductor through the outer guide channel and the spray nozzle, and then flow out through the suction port, the inner guide channel and the through hole to form a cooling and cleaning circulation path.

[0009] Furthermore, the outer jacket is interference-fitted with the mold, and the side wall of the outer jacket has a through-hole for liquid inlet and outlet.

[0010] Furthermore, the liquid inlet hole is sealed and connected to the external guide groove on the mold, together forming the liquid inlet channel of the emulsion.

[0011] Furthermore, the liquid outlet is sealed and connected to the through hole on the mold, together forming the liquid outlet channel for the emulsion. Furthermore, a stepped groove is provided on the inner wall of the end of the outer jacket facing the mold box.

[0012] Furthermore, a limiting ring block is provided at one end of the mold, and the limiting ring block engages with the stepped groove. Furthermore, the working surface of the tapered reduction section is coated with a nano-coating.

[0013] Furthermore, there are several spray nozzles, which are evenly distributed along the circumference of the tapered diameter reduction section. Furthermore, there are several suction nozzles, which are evenly distributed along the circumference of the tapered diameter reduction section.

[0014] The beneficial effects of this utility model are: This invention constructs a closed-loop circulation path that runs through the conical diameter reduction section by setting an interconnected annular outer guide channel, circumferential spray nozzle, inner guide channel, and suction port inside the mold. This achieves directional flow of the emulsion from spray cooling to immediate recovery. This structure allows the coolant to act precisely on the core heat-generating area and forces the rapid discharge of high-temperature waste liquid containing debris, solving the technical problems of uneven cooling and incomplete cleaning in traditional molds, and improving the surface quality and processing stability of the conductor.

[0015] Meanwhile, by employing an interference fit connection between the outer casing and the mold, and precisely aligning and sealing the inlet and outlet holes on the outer casing with the outer guide channel and through hole of the mold, efficient and non-destructive connection between the external pipeline and the internal circulation system is achieved. This not only ensures that the injection pressure and suction negative pressure do not leak during operation, guaranteeing circulation power, but also gives the mold a standardized interface, greatly improving the equipment's versatility and ease of maintenance in existing production lines.

[0016] This invention utilizes a stepped groove and a locking ring structure to achieve precise axial positioning of the mold and outer casing, ensuring accurate alignment of each flow channel interface and avoiding the risk of flow channel blockage or leakage caused by assembly misalignment. Simultaneously, a nano-coating is applied to the surface of the tapered reduction section, and spray nozzles and suction ports are evenly arranged circumferentially, reducing frictional heat generation at the source and achieving 360° uniform cooling of the conductor without dead angles and all-round waste liquid recovery. This ensures the consistency of the conductor product and extends the service life of the mold. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance of this utility model; Figure 2 This is an assembly diagram of the present invention; Figure 3 yes Figure 2 Sectional view of AA; Figure 4 yes Figure 2 Cross-sectional view of BB; Figure 5 This is a three-dimensional schematic diagram of the mold in this utility model; Figure 6 This is a cross-sectional view of the assembled version of this utility model.

[0018] In the picture: 10. Mold; 11. Straightening section; 12. Tapered diameter reduction section; 13. Outer guide channel; 14. Spray nozzle; 15. Through hole; 16. Inner guide channel; 16a. Suction port; 17. Limiting ring block; 20. Outer casing; 21. Liquid inlet; 22. Liquid outlet; 23. Stepped groove; 30. Mold box. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. Example 1

[0021] Please see Figures 1 to 6 This embodiment provides a basic implementation of a conductor traction mold with a circulating cooling and cleaning function. It mainly consists of three core components: a mold 10 with complex flow channels machined inside, a mold outer sleeve 20 that is fitted outside the mold 10 and is responsible for connecting to external pipelines, and a mold box 30 assembled at one end of the mold 10.

[0022] The interior of mold 10 is along the conductor traction direction (i.e. Figure 2 From left to right, a tapered diameter reduction section 12 and a straightening section 11 are arranged sequentially. The tapered diameter reduction section 12 is used to extrude the conductor passing through it to achieve diameter reduction and shaping; the straightening section 11 is used to straighten the conductor that may be bent after diameter reduction to ensure its straightness.

[0023] To achieve circulating cooling and cleaning, this invention incorporates two independent flow channel systems within the mold 10: 1. Liquid Inlet and Spray System: An annular outer guide groove 13 is machined on the outer side wall of the mold 10. The outer guide groove 13 serves as an annular liquid storage cavity, and multiple spray nozzles 14 communicating with the outer guide groove 13 are opened on the periphery of the tapered diameter reduction section 12.

[0024] 2. Liquid suction and discharge system: An internal guide groove 16 is independently formed inside the mold 10. Multiple liquid suction ports 16a communicating with the internal guide groove 16 are also formed on the tapered reducing section 12. A through hole 15 is formed at the other end of the internal guide groove 16, located at the end of the mold 10.

[0025] The workflow and effects of this technical solution are as follows: When the externally pumped low-temperature emulsion enters the annular outer guide groove 13, the pressure causes the emulsion to be evenly ejected from multiple circumferentially distributed spray nozzles 14, directly spraying onto the surface of the conductor passing through the tapered reducing section 12. This achieves targeted high-pressure jet cooling of the conductor. At this time, the emulsion can instantly penetrate to every contact point between the conductor and the inner wall of the mold, carrying away the large amount of heat generated by the intense friction of the tapered reducing section 12, while providing effective lubrication. Compared with the traditional external rinsing cooling method, this method has higher cooling efficiency and improves the lubrication effect during conductor reduction operation.

[0026] After cooling and lubrication, the sprayed emulsion becomes hot and mixes with metal debris detached from the conductor surface and excess lubricant coated on the conductor's exterior. At this point, negative pressure is applied to the outlet channel by an external vacuum suction device (not shown), causing the waste liquid to be rapidly collected by the suction port 16a on the tapered reducing section 12. The waste liquid then enters the inner guide channel 16 and is finally discharged from the mold through the through hole 15. This method quickly removes the high-temperature waste liquid from the core working area, preventing overheating of the mold and conductor due to heat accumulation. The negative pressure suction also forcibly removes friction-generated debris from the deformation zone, effectively preventing secondary scratches on the conductor surface and blockage of the mold cavity, ensuring product surface quality and production continuity. Example 2

[0027] Based on the internal circulation path constructed in Example 1, this example further illustrates how to achieve reliable connection with external systems and sealing of internal flow channels through the structural design of the mold jacket 20.

[0028] like Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, specifically, the mold outer sleeve 20 is connected to the mold 10 by an interference fit. The inner diameter of the mold outer sleeve 20 is slightly smaller than the outer diameter of the mold 10, and it is pressed together to fit tightly against the outside of the mold 10. A liquid inlet hole 21 and a liquid outlet hole 22 are provided through the side wall of the mold outer sleeve 20.

[0029] Furthermore, the liquid inlet 21 corresponds to and is sealed and connected with the annular outer guide groove 13 on the mold 10, together forming the liquid inlet channel of the emulsion. Similarly, the liquid outlet 22 corresponds to and is sealed and connected with the through hole 15 at the end of the mold 10, together forming the liquid outlet channel of the emulsion.

[0030] The technical effects of this technical solution are as follows: This technical solution employs an interference fit connection, providing high sealing performance. Firstly, it ensures the robustness and integrity of the connection between the mold outer sleeve 20 and the mold 10, preventing relative movement or leakage under high-pressure fluid conditions. Secondly, this tight fit allows for reliable sealing interfaces between the inlet hole 21 and the external guide groove 13, and between the outlet hole 22 and the through hole 15. A poor seal between the mold outer sleeve 20 and the mold 10 will lead to pressure leakage, hindering efficient mold circulation and cleaning, and preventing the removal of particulate oil and debris from inside the mold 10 and the conductor surface. The sealed interface ensures that the energy from the external emulsion pump and vacuum pump is transferred to the internal circulation path of the mold without loss, guaranteeing sufficient injection pressure and sufficient negative pressure for suction, thus ensuring efficient operation of the circulation path.

[0031] By setting standard liquid inlet holes 21 and liquid outlet holes 22 on the mold outer sleeve 20, this mold can be easily and quickly connected to the existing coolant supply system and waste liquid recovery system in the factory through pipelines, which greatly improves the versatility and maintainability of the equipment. Example 3

[0032] To ensure the precise axial position of the mold 10 within the mold outer sleeve 20, prevent it from shifting due to fluid pressure or vibration during operation, and further facilitate assembly, this embodiment provides the following solution.

[0033] like Figure 2 As shown, specifically, a stepped groove 23 is provided on the inner wall of the end of the mold outer sleeve 20 facing the mold box 30. Correspondingly, a limiting ring block 17 is provided on the corresponding end of the mold 10. During assembly, the limiting ring block 17 of the mold 10 and the stepped groove 23 of the mold outer sleeve 20 form a snap-fit ​​engagement.

[0034] The technical effects of this technical solution are as follows: The cooperation between the stepped groove 23 and the limiting ring block 17 achieves precise axial positioning between the mold 10 and the mold outer sleeve 20, providing a clear mechanical stop for the installation of the mold 10 within the mold outer sleeve 20. This ensures that the outer guide groove 13 on the mold 10 can be precisely aligned with the liquid inlet hole 21 on the mold outer sleeve 20, and the through hole 15 on the mold 10 can be precisely aligned with the liquid outlet hole 22 on the mold outer sleeve 20, thus avoiding flow channel blockage or leakage caused by misalignment.

[0035] This structure simplifies the assembly process of the entire device, making it easy for operators to assemble and maintain intuitively. Simply push the mold 10 axially into the mold sleeve 20 until the limiting ring block 17 engages with the stepped groove 23 to complete the positioning of the core component, greatly improving assembly efficiency and accuracy, and facilitating subsequent disassembly and maintenance. Example 4

[0036] In actual production, the tapered reducing section 12 is the part of the mold that experiences the harshest working conditions and the most severe wear. To further improve the durability and reliability of the mold 10, this embodiment strengthens the tapered reducing section 12.

[0037] Specifically, a nano-coating is applied to the working surface of the tapered reducing section 12 (i.e., the inner wall surface in direct contact with the conductor) using advanced surface treatment techniques such as physical vapor deposition (PVD) or chemical vapor deposition (CVD). This nano-coating can be a diamond-like carbon (DLC) coating, a titanium nitride nano-coating, or other wear-resistant materials with high hardness and low coefficient of friction.

[0038] The nano-coating possesses extremely high hardness, effectively resisting friction and wear of conductive materials and improving wear resistance. This significantly extends the service life of the tapered reducing section 12 and even the entire mold 10, reducing replacement frequency and production costs. Simultaneously, the nano-coating typically has an extremely low coefficient of friction, further reducing friction during traction and minimizing frictional heat generation at the source, ensuring better cooling performance of the cooling system. The smooth and hard coating surface makes it less prone to metal debris adhesion, facilitating the removal of waste emulsion through the suction port 16a and enhancing the thoroughness of the cleaning effect.

[0039] As a preferred embodiment of this example, Figure 5 As shown, in order to completely solve the problem of uneven circumferential cooling of mold 10 and ensure that the physical properties and microstructure of the conductor in the circumferential direction remain consistent during the diameter reduction process, the distribution of spraying and suction was optimized.

[0040] Specifically, the conical diameter reduction section 12 has a plurality of spray nozzles 14 (preferably 4 or 6 / 8) on its periphery, and the spray nozzles 14 are evenly distributed along the circumference of the conical diameter reduction section 12. Similarly, the conical diameter reduction section 12 also has a plurality of suction nozzles 16a, which are also evenly distributed along the circumference of the conical diameter reduction section 12.

[0041] The circumferentially distributed spray nozzles 14 can simultaneously and equally spray coolant onto the conductor surface from all directions, achieving uniform cooling of the conductor with no dead angles. This ensures that the conductor receives a consistent cooling effect throughout its entire circumference, avoiding differences in microstructure or uneven deformation caused by insufficient local cooling, which is crucial for producing high-performance, high-precision conductor products.

[0042] The circumferentially distributed suction ports 16a form a highly efficient waste liquid recovery network. Regardless of their location within the conical diameter reduction section 12, the high-temperature waste liquid and debris can be quickly captured and extracted by the nearest suction port 16a, preventing the formation of cleaning dead zones. This, combined with uniform spraying, achieves consistent circumferential circulation management of the entire deformation zone from input to discharge.

[0043] The working process for this application is as follows: In actual use, the assembled device is installed on the traction equipment. The pipeline of the external coolant supply system is connected to the inlet 21 of the mold jacket 20, and the pipeline of the external vacuum waste liquid recovery system (not shown in the diagram) is connected to the outlet 22. The conductor wire enters from one side of the mold box 30, passes through the tapered reducing section 12 and the straightening section 11 of the mold 10 in sequence, and is finally pulled out by the traction equipment.

[0044] After the equipment is started, the low-temperature emulsion, under pump pressure, enters the annular outer guide channel 13 through the inlet 21, and is then sprayed at high pressure through the circumferentially uniform spray nozzles 14 onto the contact surface between the conductor and the conical reducing section 12 for powerful cooling and lubrication. Subsequently, under vacuum negative pressure, the high-temperature waste liquid and metal debris are rapidly captured by the circumferentially uniform suction port 16a, and discharged through the inner guide channel 16 and through the through hole 15, finally entering the waste liquid treatment system through the outlet 22. Thus, a highly efficient, uniform, and forced cooling and cleaning cycle continues to operate until the traction process ends.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A conductor traction mold with circulating cooling and cleaning function, comprising a mold (10) and an outer sleeve (20) fitted over the outside of the mold (10), wherein a mold box (30) is fitted at one end of the mold (10), characterized in that: The mold (10) has a tapered diameter reduction section (12) and a straightening section (11) arranged sequentially along the conductor traction direction inside. The tapered diameter reduction section (12) is used to reduce the diameter of the conductor passing through, and the straightening section (11) is used to straighten the conductor passing through. An annular outer guide groove (13) is provided inside the side wall of the mold (10), and a spray port (14) communicating with the outer guide groove (13) is provided on the periphery of the tapered reducing part (12); an inner guide groove (16) is also provided inside the mold (10), and a suction port (16a) communicating with the inner guide groove (16) is provided on the tapered reducing part (12), and a through hole (15) is provided at one end of the inner guide groove (16); The emulsion can be sprayed onto the conductor through the outer guide channel (13) and the spray nozzle (14), and flow out through the suction port (16a), the inner guide channel (16) and the through hole (15) to form a cooling and cleaning circulation path.

2. The conductor traction mold with circulating cooling and cleaning function according to claim 1, characterized in that, The outer jacket (20) is interference-fitted with the mold (10), and the side wall of the outer jacket (20) is provided with a liquid inlet hole (21) and a liquid outlet hole (22).

3. A conductor traction mold with circulating cooling and cleaning function according to claim 2, characterized in that, The liquid inlet hole (21) is sealed and connected to the external guide groove (13) on the mold (10), forming a liquid inlet channel for the emulsion.

4. A conductor traction mold with circulating cooling and cleaning function according to claim 2, characterized in that, The liquid outlet hole (22) is sealed and connected with the through hole (15) on the mold (10), forming a liquid outlet channel for the emulsion.

5. A conductor traction mold with circulating cooling and cleaning function according to claim 1, characterized in that, The inner wall of the outer jacket (20) facing the mold box (30) is provided with a stepped groove (23).

6. A conductor traction mold with circulating cooling and cleaning function according to claim 5, characterized in that, One end of the mold (10) is provided with a limiting ring block (17), which engages with the stepped groove (23).

7. A conductor traction mold with circulating cooling and cleaning function according to claim 1, characterized in that, The working surface of the tapered reducing section (12) is coated with a nano-coating.

8. A conductor traction mold with circulating cooling and cleaning function according to claim 1, characterized in that, The spray nozzle (14) has several nozzles, which are evenly distributed along the circumference of the tapered diameter reduction section (12).

9. A conductor traction mold with circulating cooling and cleaning function according to claim 1, characterized in that, The suction port (16a) has several, which are evenly distributed along the circumference of the tapered diameter reduction section (12).

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