Self-lubricating wire drawing die

Abstract

The utility model discloses a self-lubricating wire-drawing die, which relates to the technical field of wire-drawing dies and comprises a die body, and a lubricating mechanism is arranged in the die body and used for lubricating a metal wire before wire drawing. The lubricating mechanism comprises a material storage cavity, a plurality of sealing blocks are fixedly mounted in the material storage cavity, a mounting ring is fixedly mounted between the sealing blocks, and a plurality of lubricating fans are rotatably mounted on the mounting ring; by arranging the lubricating mechanism, when the metal wire is drawn, the lubricating fan can be driven to rotate, a power assembly does not need to be arranged, the lubricating fan rotates to take out lubricating powder in the material storage cavity to uniformly coat the surface of the metal wire, and the lubricating powder abuts against the compression area, so that the lubricating property of the metal wire drawing can be effectively improved; and the material storage cavity can be automatically sealed, and leakage of the lubricating powder is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing dies, in particular to a self-lubricating wire drawing die. Background Art

[0002] A wire drawing die is a tool used during the metal forming process to compress the metal's cross-sectional area and achieve the desired cross-sectional shape and size. Before the wire enters the die, it is coated with drawing powder, a dry wire drawing lubricant used during the wire drawing process. This lubricant forms a lubricating film between the drawn metal and the die wall, reducing friction at the interface and preventing heat-induced adhesion of the metal to the die wall. This reduces energy consumption and temperature rise during drawing, extending the die's service life, ensuring product surface quality, and ensuring uniform deformation.

[0003] However, when drawing with existing dies, the metal wire passes through a drawing powder box so that the drawing powder adheres to the metal wire. Due to the insufficient adhesion of the drawing powder, it is easy to fall off during the movement. When the subsequent product is drawn, there is less drawing powder on its surface, which cannot play a good lubricating role and cannot effectively reduce the friction coefficient between the product and the tapered hole wall of the deformed cone. Utility Model Content

[0004] The main purpose of the utility model is to provide a self-lubricating wire drawing die, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A self-lubricating wire drawing die comprises a die body, wherein a lubricating mechanism is provided in the die body for lubricating a metal wire before drawing;

[0007] The lubricating mechanism comprises a material storage cavity, a plurality of sealing blocks are fixedly installed in the material storage cavity, a mounting ring is fixedly installed between the sealing blocks, and a plurality of lubricating fans are rotatably installed on the mounting ring.

[0008] As a further solution of the present invention, the plurality of sealing blocks are distributed in a circular array, and the plurality of lubricating fans are distributed in a circular array.

[0009] As a further solution of the present invention, the top of the blade of the lubricating fan is an arc-shaped edge, and a circular structure is formed between the arc-shaped edges.

[0010] As a further solution of the present invention, the upper and lower ends of the material storage chamber are fixedly connected with connecting pipes, and a lubrication chamber is formed between the material storage chamber and the multiple sealing blocks and the lubrication fan.

[0011] As a further solution of the present invention, the mold body includes a mold main body, and an inner cavity is provided at the center of the mold main body. The inner cavity is sequentially connected to an inlet area, a compression area, a sizing area and an outlet area.

[0012] As a further solution of the present invention, the material storage cavity is located between the inlet area and the compression area, and a heat insulation layer is provided between the material storage cavity and the compression area.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting up a lubrication mechanism, the metal wire will drive the lubrication fan to rotate when it is being drawn, without the need for a power component. The rotation of the lubrication fan will bring out the lubricating powder in the storage chamber and evenly coat it on the surface of the metal wire. The lubrication is close to the compression zone, which can effectively ensure the lubrication of the metal wire during drawing. At the same time, after the drawing is completed, the storage chamber can be automatically sealed to prevent the leakage of lubricating powder.

[0015] By setting up the storage cavity, lubrication fan, sealing block and thermal insulation layer, after the metal wire is coated with lubricating powder, the excess lubricating powder can be brought back into the storage cavity, and at the same time, the heat during wire drawing is isolated to prevent the lubricating powder from sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a self-lubricating wire drawing die of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a die body of a self-lubricating wire drawing die of the present invention;

[0018] Figure 3 This is a schematic diagram of the lubrication mechanism of a self-lubricating wire drawing die of the utility model;

[0019] Figure 4 This is a schematic diagram of the disassembly of the lubrication mechanism of a self-lubricating wire drawing die of the utility model;

[0020] Figure 5 This is an enlarged schematic diagram of the lubrication fan of a self-lubricating wire drawing die of the utility model.

[0021] In the figure: 1, mold body; 11, mold body; 12, inlet area; 13, compression area; 14, sizing area; 15, outlet area;

[0022] 2. Lubrication mechanism; 21. Connecting pipe; 22. Material storage chamber; 23. Sealing block; 24. Mounting ring; 25. Lubrication fan; 26. Arc edge; 27. Lubrication chamber; 3. Thermal insulation layer. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-5 As shown, a self-lubricating wire drawing die comprises a die body 1, which includes a die main body 11. The die main body 11 is a cylindrical structure used for drawing metal wire. The center of the die main body 11 is provided with an inner cavity, which is sequentially connected to an inlet area 12, a compression area 13, a sizing area 14, and an outlet area 15. After the metal wire enters the die cavity through the inlet area 12, it is drawn through the compression area 13. After the wire drawing is completed, the sizing area 14 fixes the diameter of the wire, and the wire is finally discharged through the outlet area 15.

[0025] In this embodiment, a lubrication mechanism 2 is located within the mold body 1 between the inlet area 12 and the compression area 13. This lubrication mechanism is used to lubricate the wire. Its proximity to the compression area 13 improves the uniformity of the lubricating powder and its lubrication effect. Lubrication mechanism 2 includes a storage chamber 22 for storing the lubricating powder. Connecting pipes 21 are fixedly connected to the upper and lower ends of storage chamber 22 for adding and removing lubricating powder from the storage chamber 22. Sealing caps can be used to seal the ends of connecting pipe 21.

[0026] In this embodiment, a plurality of sealing blocks 23 are fixedly installed in the storage chamber 22. The plurality of sealing blocks 23 are distributed in a circular array, and the center of the array is the center of the storage chamber 22. The plurality of sealing blocks 23 are connected by a mounting ring 24, and a lubricating fan 25 is rotatably mounted on the surface of the mounting ring 24. The blades of the lubricating fan 25 are in close contact with the sealing blocks 23, forming a closed structure so that the lubricating powder will not leak out when the lubricating fan 25 is not rotating. The top of the blade of the lubricating fan 25 is an arc-shaped edge 26, and is in close contact with the surface of the metal wire. When the metal wire is drawn, the lubricating fan 25 is driven to rotate, thereby bringing out the lubricating powder in the storage chamber 22 and evenly coating the surface of the metal wire.

[0027] In this embodiment, the lubricating fan 25, the sealing block 23, the storage chamber 22 and the metal wire form two enclosed spaces, which are the lubricating chamber 27, which are used to evenly coat the metal wire with lubricating powder and bring excess lubricating powder back to the interior of the storage chamber 22 through the lubricating fan 25.

[0028] In this embodiment, a heat insulating layer 3 is provided between the lubricating mechanism 2 and the compression zone 13 to isolate the large amount of heat generated by the metal wire passing through the compression zone 13, thereby preventing the generated heat from heating the lubricating powder and causing the lubricating powder to sinter.

[0029] It should be noted that the present invention is a self-lubricating wire drawing die. During use, after the metal wire passes through the cavity of the die body 11, the metal wire is in close contact with the curved edge 26 of the lubricating fan 25. When the metal wire is drawn, as it moves toward the outlet area 15, it will simultaneously drive the lubricating fan 25 to rotate along the mounting ring 24. A gap will leak out between the lubricating fan 25 and the sealing block 23. Under the action of the blades of the lubricating fan 25, the lubricating powder in the storage cavity 22 will be brought out and coated on the surface of the metal wire. Because the surface of the metal wire is in contact with the curved edge 26 of the lubricating fan 25, the metal wire can be evenly coated with excess lubricating powder.

[0030] When the wire leaves the lubricating mechanism 2, excess lubricating powder is scraped off by the sidewalls of the through hole of the storage chamber 22 and remains in the lubricating chamber 27. When the lubricating fan 25 rotates, the excess lubricating powder is brought back into the storage chamber 22. The lubricating powder in the storage chamber 22 can be replenished and extracted through the upper and lower connecting pipes 21.

[0031] The metal wire, covered with lubricating powder, passes through the compression zone 13 and the sizing zone 14 before being drawn and finally leaves through the exit zone 15. A large amount of heat is generated while the metal wire is being drawn in the compression zone 13. This heat is blocked by the heat insulating layer 3 and is not transferred to the storage chamber 22, thereby effectively preventing the lubricating powder from sintering.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating wire drawing die, comprising a die body (1), characterized in that: A lubrication mechanism (2) is provided in the die body (1) for lubricating the metal wire before drawing; The lubricating mechanism (2) comprises a material storage cavity (22), a plurality of sealing blocks (23) are fixedly installed in the material storage cavity (22), a mounting ring (24) is fixedly installed between the sealing blocks (23), and a plurality of lubricating fans (25) are rotatably installed on the mounting ring (24).

2. The self-lubricating wire drawing die according to claim 1, characterized in that: The plurality of sealing blocks (23) are distributed in a circular array, and the plurality of lubricating fans (25) are distributed in a circular array.

3. The self-lubricating wire drawing die according to claim 1, characterized in that: The top end of the blade of the lubricating fan (25) is an arcuate edge (26), and a circular structure is formed between the arcuate edges (26).

4. The self-lubricating wire drawing die according to claim 1, characterized in that: The upper and lower ends of the material storage cavity (22) are fixedly connected to connecting pipes (21), and a lubrication cavity (27) is formed between the material storage cavity (22) and the plurality of sealing blocks (23) and the lubrication fan (25).

5. The self-lubricating wire drawing die according to claim 1, characterized in that: The mold body (1) comprises a mold main body (11), wherein an inner cavity is provided at the center of the mold main body (11), and the inner cavity is sequentially connected to an inlet area (12), a compression area (13), a sizing area (14) and an outlet area (15).

6. The self-lubricating wire drawing die according to claim 1, characterized in that: The material storage cavity (22) is located between the inlet area (12) and the compression area (13), and a heat insulation layer (3) is provided between the material storage cavity (22) and the compression area (13).

Images