A coating covering uniform microporous drawing die

Abstract

The utility model discloses a microporous wire drawing die that coating covers evenly, including first wire drawing die, second wire drawing die and threading quick release mechanism, the middle part of first wire drawing die is provided with the conical opening of the wire threading, the middle part of second wire drawing die is provided with the through -going opening of the intercommunication with conical opening, threading quick release mechanism sets up in the side of first wire drawing die and second wire drawing die, threading quick release mechanism includes first limit and sealing ring, first limit sets up in the side of second wire drawing die, and the outside of first limit is provided with outer thread, the outside of first wire drawing die is provided with the guide opening of first limit insertion, and the guide opening is circular ring structure, and the inner wall of guide opening is provided with internal thread, and the device has solved the problem of inconvenient installation and big coaxiality deviation, has reached the purpose that installation is convenient, improves coaxiality and ensures the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of wire drawing die technology, and more specifically, it relates to a microporous wire drawing die with uniform coating coverage. Background Technology

[0002] In the application of cemented carbide wire drawing dies, the traditional double-vent design has long dominated the market, but this design has many unavoidable defects.

[0003] Currently, wire drawing dies on the market suffer from the following problems. Firstly, the traditional dual-vent design performs poorly in airflow control, frequently exhibiting airflow instability. This makes it difficult for the coating material to adhere evenly to the die surface during CVD chemical vapor deposition, resulting in poor coating uniformity. Uneven coating directly interferes with wire drawing accuracy, increases product dimensional deviations, raises scrap rates, and significantly impacts production efficiency and product quality. Secondly, the traditional die design lacks structural strength. Under the long-term high pressure and friction of the wire drawing process, it is prone to wear, deformation, and even breakage. This not only shortens the die's lifespan and increases production costs but also limits its application in high-strength, high-precision wire drawing operations, failing to meet the demands of modern industrial production for high efficiency, stability, and high quality.

[0004] On the other hand, existing wire drawing dies also have significant problems in the installation process. The lack of an effective initial alignment guide mechanism makes installation inconvenient, requiring operators to spend considerable time and effort on precise alignment. Furthermore, due to the lack of precise guidance, the coaxiality deviation after installation is large, which not only affects the stability of the wire drawing process but may also further accelerate die wear and reduce die performance. Simultaneously, the sealing problem during installation has not been properly addressed, making it difficult to ensure a good sealing effect and easily leading to gas leakage and other issues, affecting the quality of the CVD coating and the normal operation of the wire drawing process. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a microporous wire drawing die with uniform coating coverage, which has installation guidance and uniform air ventilation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This utility model is further configured as follows: it includes a first wire drawing die, a second wire drawing die, and a quick-release wire threading mechanism; the first wire drawing die has a conical opening in the middle for the wire to pass through; the second wire drawing die has a through-hole in the middle that communicates with the conical opening; the quick-release wire threading mechanism is located beside the first and second wire drawing dies; the quick-release wire threading mechanism includes a first limiting part and a sealing ring; the first limiting part is located beside the second wire drawing die, and the outer side of the first limiting part is provided with an external thread; the outer side of the first wire drawing die has a guide opening for the insertion of the first limiting part, and the guide opening has a circular structure, and the inner wall of the guide opening has an internal thread, so that when the first limiting part moves, it can abut against the guide opening, and the second wire drawing die and the first limiting part can abut against the first wire drawing die by screwing in the thread.

[0007] By adopting the above technical solution, the problems of inconvenient installation and large coaxiality deviation have been solved, achieving the goals of convenient installation, improved coaxiality, and guaranteed sealing effect.

[0008] The present invention is further configured such that: the quick-release wire-threading mechanism also includes a sealing ring; the sealing ring is disposed on the side of the second wire-drawing die, and a first sealing groove for placing the sealing ring is provided on the side of the second wire-drawing die, and a second sealing groove for abutting the sealing ring is provided on the side of the first wire-drawing die.

[0009] The present invention is further configured such that: a vent hole is provided on the side of the first wire drawing die, and there is a pair of vent holes, and the vent hole passes through the conical opening.

[0010] The present invention is further configured such that: the quick-release wire-threading mechanism also includes an anti-slip part; the anti-slip part has multiple parts and is respectively arranged on the outside of the second wire-drawing die, and the multiple anti-slip parts are all cuboid structures.

[0011] By adopting the above technical solution, multiple anti-slip parts are evenly distributed along the circumference, so that when the operator holds the second wire drawing die to rotate, the force applied by the hand is more balanced, avoiding misalignment of the thread due to force bias, and further ensuring the coaxial engagement of the first limiting part and the guide port.

[0012] The present invention is further configured such that: a spiral guide groove is provided on the inner side of the middle part of the second drawing die, and the spiral guide groove is located on the side of the through port, and the spiral guide groove and the through port form a cavity for the wire to pass through.

[0013] The present invention is further configured such that the opening is a conical structure and the spiral guide groove is fitted to the inner side of the opening.

[0014] By adopting the above technical solution, the spiral guide groove is opened in close contact with the inner side of the conical passage, so that when the airflow flows along the spiral trajectory of the inner wall of the conical passage, it is more in close contact with the inner wall of the second drawing die, reducing the eddy current of the airflow at the corner of the channel, further improving the uniformity of the spiral airflow, ensuring that the coating precursor can also be evenly covered in the conical transition area, and avoiding local coating defects caused by changes in the channel shape.

[0015] In summary, this application includes at least one of the following beneficial technical effects: By setting up a quick-release wire-threading mechanism, the problems of inconvenient installation and large coaxiality deviation are solved, achieving the goals of convenient installation, improved coaxiality, and guaranteed sealing effect.

[0016] A spiral guide groove is provided on the inner side of the middle of the second drawing die, located beside the through-hole. The spiral guide groove and the through-hole form a cavity for the wire to pass through. The vent hole corresponds to the end face of the spiral guide groove of the second drawing die, and the spiral guide groove does not penetrate the wire through-hole; the length of the spiral guide groove is half that of the through-hole. When coating the first and second drawing dies, an external air pump and coating equipment are first connected, and then the external air pipe is connected to the vent hole. After connection, the air pump and coating equipment are started. After starting, the airflow enters through the vent hole and forms a spiral airflow around the central axis of the wire along the spiral guide groove, which is evenly blown onto the inner wall of the second drawing die, ultimately achieving uniform deposition of the coating on the inner wall of the second drawing die. This solves the problems of unstable airflow, poor coating uniformity, interference with drawing accuracy, and insufficient die strength in the traditional double vent hole design. It achieves the effects of improving coating uniformity to reduce defect rate, ensuring drawing accuracy, enhancing die structural strength, thereby extending service life and optimizing application economy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a microporous wire drawing die with uniform coating coverage according to the present invention. Figure 2 This is a three-dimensional structural diagram of a microporous wire drawing die with uniform coating coverage under an exploded state, according to the present invention. Figure 3 This is a three-dimensional structural diagram of a quick-release mechanism for a microporous wire drawing die with uniform coating coverage according to the present invention. Figure 4 This is a side cross-sectional view of a microporous wire drawing die with uniform coating according to the present invention. Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 for Figure 3 Enlarged structural diagram at point B; Explanation of reference numerals in the attached drawings: 1. First wire drawing die; 11. Guide opening; 2. Second wire drawing die; 21. Spiral guide groove; 3. Wire threading quick release mechanism; 31. First limiting part; 32. Sealing ring; 33. Anti-slip part. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] Please see Figure 1-6 The present invention provides the following technical solution: Example 1: In order to solve the problems of inconvenient installation and large coaxiality deviation caused by the lack of a docking guide mechanism in the initial installation of existing wire drawing dies.

[0021] The device includes a first wire drawing die 1, a second wire drawing die 2, and a quick-release wire threading mechanism 3. The first wire drawing die 1 has a tapered opening in the middle for the wire to pass through. The second wire drawing die 2 has a through-hole in the middle that communicates with the tapered opening. The quick-release wire threading mechanism 3 is located beside the first wire drawing die 1 and the second wire drawing die 2. The quick-release wire threading mechanism 3 includes a first limiting part 31 and a sealing ring 32. The first limiting part 31 is located beside the second wire drawing die 2, and the outer side of the first limiting part 31 is provided with an external thread. The outer side of the first wire drawing die 1 has a guide port 11 for the insertion of the first limiting part 31. The guide port 11 has a circular structure, and the inner wall of the guide port 11 is provided with an internal thread. When the first limiting part 31 moves, it can abut against the guide port 11. The second wire drawing die 2 and the first limiting part 31 can abut against the first wire drawing die 1 by screwing in the thread.

[0022] In this embodiment, the tapered opening and through-hole in the middle of the first drawing die 1 and the second drawing die 2 form a circular hole for the wire to pass through. Furthermore, the die substrate of the first drawing die 1 and the second drawing die 2 in this embodiment is an ultra-fine grain hard alloy, and CVD is used for the inner wall coating process of the first drawing die 1 and the second drawing die 2. Firstly, the operator sets a first limiting part 31 in the second drawing die 2, which cooperates with the guide opening 11 on the side of the first drawing die 1. During installation, the first limiting part 31 is aligned with the guide opening 11 and pushed until it abuts. During this process, the outer thread of the first limiting part 31 does not contact the guide opening 11, avoiding direct collision of the outer threads. This allows the operator to complete the alignment first, and then continue pushing until the outer thread contacts the inner thread of the guide opening 11 before rotating the second drawing die 2. This solves the problems of inconvenient installation and large coaxiality deviation, achieving the goals of convenient installation, improved coaxiality, and ensured sealing effect.

[0023] See Figures 2-4 The quick-release wire-threading mechanism 3 also includes a sealing ring 32; the sealing ring 32 is disposed on the side of the second wire drawing die 2, and a first sealing groove for placing the sealing ring 32 is provided on the side of the second wire drawing die 2, and a second sealing groove for abutting the sealing ring 32 is provided on the side of the first wire drawing die 1.

[0024] During installation, the sealing ring 32 is first pressed into the first sealing groove. After the second wire drawing die 2 and the first wire drawing die 1 are installed, the sealing ring 32 can abut against the first sealing groove and the second sealing groove respectively.

[0025] See Figure 2 The first wire drawing die 1 has a vent hole on its side, and there is a pair of vent holes, and the vent holes pass through the conical opening.

[0026] In this embodiment, the vent can be connected to an external air pump and a coating equipment, and normal coating ventilation is performed when the assembled first drawing die 1 and second drawing die 2 are threaded.

[0027] See Figure 3 The quick-release wire drawing mechanism 3 also includes an anti-slip part 33; the anti-slip part 33 has multiple parts and is respectively arranged on the outside of the second wire drawing die 2, and the multiple anti-slip parts 33 are all cuboid structures.

[0028] In this embodiment, to facilitate the operator's hand-holding and rotation of the second wire drawing die 2, multiple anti-slip parts 33 are evenly distributed circumferentially, so that when the operator holds the second wire drawing die 2 and rotates it, the force applied by the hand is more balanced, avoiding misalignment of the thread due to force bias, and further ensuring the coaxial engagement of the first limiting part 31 and the guide port 11.

[0029] Example 2 addresses the problems of unstable airflow, high coating defect rate, and interference with wire drawing accuracy caused by the design of two ventilation holes in the traditional first wire drawing die 1. Furthermore, the excessively large hole diameter weakens the die strength and affects service life and economy.

[0030] See Figure 6 The second drawing die 2 has a spiral guide groove 21 on the inner side of the middle part, and the spiral guide groove 21 is located on the side of the passage. The spiral guide groove 21 and the passage form a cavity for the wire to pass through.

[0031] By aligning the vent hole with the end face of the spiral guide groove 21 of the second drawing die 2, and ensuring that the spiral guide groove 21 does not penetrate the wire passage opening, the length of the spiral guide groove 21 is half that of the passage opening. When coating the first drawing die 1 and the second drawing die 2, an external air pump and coating equipment are first connected, and then the external air pipe is connected to the vent hole. After connection, the air pump and coating equipment are started. The airflow enters through the vent hole and forms a spiral airflow around the central axis of the wire along the spiral guide groove 21, evenly blowing towards the inner wall of the second drawing die 2, ultimately achieving uniform deposition of the coating on the inner wall of the second drawing die 2. This solves the problems of unstable airflow, poor coating uniformity, interference with drawing accuracy, and insufficient die strength in traditional dual-vent hole designs, achieving the effect of improving coating uniformity to reduce defect rate and ensure drawing accuracy.

[0032] See Figure 6 The opening is designed with a conical structure, and the spiral guide groove 21 is fitted into the inner side of the opening.

[0033] The tapered passage and the tapered opening of the first drawing die 1 form a smooth transition wire channel, avoiding friction or deviation caused by abrupt changes in aperture when the wire passes through. Simultaneously, the spiral guide groove 21 fits snugly against the inner side of the tapered passage, allowing the airflow to better conform to the inner wall surface of the second drawing die 2 as it flows along the spiral trajectory of the tapered inner wall. This reduces eddies at the channel corners, further improving the uniformity of the spiral airflow, minimizing localized coating defects caused by changes in channel shape, and ensuring smooth wire drawing.

[0034] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A microporous wire drawing die with uniform coating, characterized in that: It includes a first wire drawing die (1), a second wire drawing die (2), and a wire threading quick release mechanism (3); The first wire drawing die (1) has a tapered opening in the middle for the wire to pass through; The second wire drawing die (2) has a passage opening in the middle that is connected to the conical opening; The quick-release wire-threading mechanism (3) is located on the side of the first wire-drawing die (1) and the second wire-drawing die (2); The quick-release wire-threading mechanism (3) includes a first limiting part (31); The first limiting part (31) is provided on the side of the second wire drawing die (2), and the outer side of the first limiting part (31) is provided with external threads; The outer side of the first wire drawing die (1) is provided with a guide port (11) for the insertion of the first limiting part (31), and the guide port (11) is a circular structure. The inner wall of the guide port (11) is provided with an internal thread. When the first limiting part (31) moves, it can be in contact with the guide port (11). The second wire drawing die (2) and the first limiting part (31) can be in contact with the first wire drawing die (1) by screwing in the thread.

2. The microporous wire drawing die with uniform coating coverage according to claim 1, characterized in that: The quick-release wire drawing mechanism (3) also includes a sealing ring (32); the sealing ring (32) is located on the side of the second wire drawing die (2), and the side of the second wire drawing die (2) is provided with a first sealing groove for placing the sealing ring (32), and the side of the first wire drawing die (1) is provided with a second sealing groove for abutting the sealing ring (32).

3. The microporous wire drawing die with uniform coating coverage according to claim 2, characterized in that: The first wire drawing die (1) has a vent hole on its side, and there is a pair of vent holes, and the vent hole passes through the conical opening.

4. The microporous wire drawing die with uniform coating coverage according to claim 3, characterized in that: The quick-release wire drawing mechanism (3) also includes an anti-slip part (33); the anti-slip part (33) has multiple parts and is respectively arranged on the outside of the second wire drawing die (2), and the multiple anti-slip parts (33) are all cuboid structures.

5. A microporous wire drawing die with uniform coating coverage according to claim 4, characterized in that: The second drawing die (2) has a spiral guide groove (21) on the inner side of the middle part, and the spiral guide groove (21) is located on the side of the passage. The spiral guide groove (21) and the passage form a cavity for the wire to pass through.

6. The microporous wire drawing die with uniform coating coverage according to claim 5, characterized in that: The opening is a tapered structure, and the spiral guide groove (21) is fitted to the inside of the opening.

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