Wire drawing device for uniformly covering surface of steel wire with wire drawing powder

Abstract

The invention relates to the technical field of wire drawing devices, in particular to a wire drawing device with wire drawing powder uniformly covering the surface of a steel wire, which comprises a drawing box, a partition plate is arranged in one end of the drawing box adjacent to a die, and the drawing box is divided into a drawing chamber and a lubricating chamber through the partition plate; a lubricating cover communicating with the stretching opening is arranged on the side, located in the stretching cavity, of the partition plate, a conveying cover communicating with the lubricating cover is arranged on the side, located in the lubricating cavity, of the partition plate, and a conveying assembly is arranged in the lubricating cavity and comprises a spiral shaft rotationally arranged in the lubricating cavity; the spiral shaft is provided with a plurality of sets of mutually-connected spiral blades and used for pushing lubricating powder in the lubricating cavity into the conveying cover from the end, away from the conveying cover, of the spiral shaft, the spiral shaft is of a hollow structure, and a steel wire to be stretched penetrates through the spiral shaft, passes through the lubricating cover and enters the stretching opening. And the lubricating powder in the lubricating cavity is uniformly and continuously pushed into the conveying cover and the pushing opening, so that the lubricating powder can cover the surface of the steel wire.

Description

Technical Field

[0001] The invention relates to the technical field of wire drawing devices, in particular to a wire drawing device in which wire drawing powder evenly covers the surface of a steel wire. Background Art

[0002] Wire drawing refers to a process in which the wire rod raw material is subjected to a series of processes, such as pickling, wire drawing, phosphating, and winding, and then drawn once or multiple times to reach the target diameter. In this process, the surface quality and performance of the steel wire are crucial, and the uniform coverage of wire drawing powder is one of the key factors affecting the surface quality of the steel wire; wire drawing powder plays a role in lubrication, cooling, and reducing die wear during the wire drawing process. It can improve the drawing efficiency of the steel wire, reduce energy consumption, and ensure the surface smoothness and precision of the steel wire.

[0003] In the existing wire drawing device operation process, applying lubricating powder is a key step to ensure that the friction of the steel wire is reduced during the die drawing process. However, the method of directly pouring lubricating powder into the die box, which is commonly used in actual operation, has several significant technical defects.

[0004] The primary problem is that when the steel wire passes through the area covered by the lubricating powder, the amount of lubricating powder it carries is extremely limited due to its cylindrical structure. As the steel wire enters the die and undergoes extrusion and stretching, most of the lubricating powder originally attached to the surface of the steel wire will fall off, making it difficult to effectively reach the lubricating area inside the die, thereby weakening the lubrication effect and increasing the risk of die wear and wire surface damage.

[0005] Secondly, as the production process continues, the lubricating powder in the mold box will gradually be consumed. When the lubricating powder level drops below the wire crossing path, the wire will not be able to effectively contact and carry new lubricating powder, resulting in a sharp decrease in lubrication. More seriously, this phenomenon not only causes the waste of unused lubricating powder under the wire, but also directly affects the subsequent wire drawing quality and efficiency due to insufficient lubrication, which may cause a series of chain reactions such as increased surface roughness, increased energy consumption and premature equipment damage.

[0006] Based on this, the present invention discloses a wire drawing device in which wire drawing powder evenly covers the surface of a steel wire. Summary of the invention

[0007] In order to solve the problem raised in the background technology, the present invention provides a wire drawing device with wire drawing powder uniformly covering the surface of a steel wire, which comprises a workbench, on which a plurality of groups of steel wire drawing devices are arranged, and the extrusion and drawing radius of each group of steel wire drawing devices gradually decreases, the steel wire drawing device comprises a winding column, a drawing box is arranged adjacent to the winding column, a mold is arranged at one end of the drawing box, and a drawing opening is opened on the mold;

[0008] Preferably, a partition is provided in one end of the stretching box adjacent to the mold, and the stretching box is divided into a stretching chamber and a lubrication chamber by the partition, a lubrication cover connected to the stretching port is provided on one side of the partition located in the stretching chamber, a conveying cover connected to the lubrication cover is provided on one side of the partition located in the lubrication chamber, and a conveying assembly is provided in the lubrication chamber;

[0009] Among them, the conveying component includes a spiral shaft rotatably arranged in a lubrication chamber, and the spiral shaft is provided with a plurality of groups of spiral blades connected with each other, which are used to push the lubricating powder in the lubrication chamber into the conveying cover from the end away from the conveying cover. The spiral shaft is a hollow structure, and the steel wire to be stretched passes through the spiral shaft through the lubrication cover and enters the stretching port.

[0010] As a further improvement of the present technical solution, the lubrication hood and the conveying hood are both conical structures, and a push port connected to the stretching port is opened in the lubrication hood. The inner diameter of the narrower end of the push port is adapted to the inner diameter of the stretching port, and the wider end of the push port is connected to the narrower end of the conveying hood.

[0011] As a further improvement of the technical solution, the upper half of the conveying cover is a through opening, and the bottom of the connection between the conveying cover and the pushing port is smoothly connected.

[0012] As a further improvement of the technical solution, a first spiral blade is fixedly provided on the portion of the spiral shaft located inside the conveying cover and the push port, and the spiral blade of the first spiral blade is adapted to the structure of the push port and the conveying cover.

[0013] Preferably, the portion of the first spiral blade located in the push port fits against the inner wall of the push port, a third spiral blade is fixed to the portion of the first spiral blade located in the conveying cover, and the first spiral blade fits against the inner wall of the conveying cover through the third spiral blade.

[0014] As a further improvement of the present technical solution, a second spiral blade connected with the first spiral blade is fixedly provided on the portion of the spiral shaft located in the lubrication chamber away from the conveying cover area, and a fourth spiral blade is fixedly provided on the second spiral blade. The second spiral blade is fitted with the inner wall of the bottom of the lubrication chamber through the fourth spiral blade.

[0015] Preferably, the structure of the third spiral blade is compatible with the structure of the first spiral blade, and the structure of the fourth spiral blade is compatible with the structure of the second spiral blade.

[0016] As a further improvement of the technical solution, the first spiral blade and the fourth spiral blade are both made of rubber, and the ends are structures containing a plurality of filamentous rubber strips.

[0017] Preferably, a feed hole is provided on the spiral shaft between the spiral blades.

[0018] As a further improvement of the present technical solution, one end of the spiral shaft away from the conveying cover extends to the outside of the stretching box and is fixedly connected to a driven bevel gear. A driving motor is fixedly provided at a position of the stretching box adjacent to the driven bevel gear. A driving bevel gear is fixedly provided at the output end of the driving motor. The driving bevel gear is meshed with the driven bevel gear. One end of the spiral shaft located outside the stretching box is connected to a protective cover with a conical structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the wire drawing device in which the wire drawing powder evenly covers the surface of the steel wire, the lubricating powder is continuously pushed from the storage area (on the right side of line a) to the vicinity of the conveying cover by the layered pushing structure of the spiral shaft and the lubrication chamber in cooperation with the second spiral blade and the fourth spiral blade; the first spiral blade and the third spiral blade further push the lubricating powder along the slope of the conveying cover to the pushing port, thereby realizing the directional layered conveying of the lubricating powder from the storage area to the extrusion port, avoiding the accumulation or residue of the lubricating powder, significantly improving the utilization rate of the lubricating powder, and adapting to different powder quantity conditions (gravity-assisted conveying when full of powder, mechanical forced pushing when low).

[0021] 2. In the wire drawing device in which the wire drawing powder evenly covers the surface of the steel wire, the conical lubrication cover is fitted with the inner wall of the first spiral blade through the dynamic fitting design of the lubrication cover and the spiral blade, and the third spiral blade is made of flexible rubber material, and the filamentous rubber strip at the end always rotates close to the inner wall of the conveying cover; it not only ensures the sealing of the lubrication powder conveying path and reduces the loss of powder leakage, but also reduces the wear of metal parts during high-speed rotation, thereby extending the life of key parts.

[0022] 3. In the wire drawing device in which the wire drawing powder evenly covers the surface of the steel wire, the lubricating powder enters the interior of the spiral shaft through the feed hole of the spiral shaft and the hollow structure. The steel wire continuously contacts the lubricating powder while traveling in the shaft, forming a dual lubrication mode of "pre-lubrication in the shaft + main lubrication at the drawing port", which increases the coverage rate of the lubricating powder on the steel wire surface and effectively reduces the tensile friction coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a structural schematic diagram of a stretching box of the present invention;

[0025] Figure 3 The second structural schematic diagram of the stretching box of the present invention;

[0026] Figure 4 It is a structural cross-sectional view of the stretching box of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the lubrication cover of the present invention;

[0028] Figure 6 It is a structural front view of the conveying assembly of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the conveying assembly of the present invention;

[0030] Figure 8 is a schematic structural diagram of the first spiral blade of the present invention;

[0031] Fig. 9 It is a schematic structural diagram of the third spiral blade of the present invention.

[0032] The meaning of each number in the figure is:

[0033] 1. Workbench; 2. Winding column; 3. Stretching box; 4. Mold; 5. Lubrication chamber; 6. Stretching port; 7. Partition; 8. Stretching chamber; 9. Driving motor; 10. Driving bevel gear; 11. Driven bevel gear; 12. Lubrication cover; 13. Conveying assembly; 14. Protective cover; 15. Conveying cover; 16. Push port;

[0034] 131. spiral shaft; 132. first spiral blade; 133. second spiral blade; 134. third spiral blade; 135. fourth spiral blade; 136. feed hole. DETAILED DESCRIPTION

[0035] 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.

[0036] In actual operation, the existing wire drawing device directly pours lubricating powder into the die box, but the amount of lubricating powder carried by the steel wire is limited and the utilization rate of the lubricating powder is low, resulting in insufficient die lubrication and affected subsequent drawing effects.

[0037] To this end, the present invention provides a wire drawing device in which wire drawing powder evenly covers the surface of a steel wire. Figure 1As shown, it includes a workbench 1, on which are arranged several groups of steel wire stretching devices, and the extrusion stretching radius of each group of steel wire stretching devices gradually decreases, the steel wire stretching device includes a winding column 2, a stretching box 3 is arranged adjacent to the winding column 2, a mold 4 is arranged at one end of the stretching box 3, and a stretching opening 6 is opened on the mold 4.

[0038] Specifically, refer to Figure 3-Figure 4 As shown, a partition 7 is provided in one end of the stretching box 3 adjacent to the mold 4, and the stretching box 3 is divided into a stretching chamber 8 and a lubrication chamber 5 by the partition 7. A lubrication cover 12 connected to the stretching port 6 is provided on one side of the partition 7 located in the stretching chamber 8, and a conveying cover 15 connected to the lubrication cover 12 is provided on one side of the partition 7 located in the lubrication chamber 5.

[0039] Among them, Figure 5 As shown, the lubrication hood 12 and the conveying hood 15 are both conical structures. A push port 16 connected to the stretching port 6 is provided in the lubrication hood 12. The inner diameter of the narrower end of the push port 16 is adapted to the inner diameter of the stretching port 6. The wider end of the push port 16 is connected to the narrower end of the conveying hood 15. The upper half of the conveying hood 15 is a through port, and the bottom of the connection between the conveying hood 15 and the push port 16 is smoothly connected.

[0040] Further, see Figure 4 and Figure 6-Figure 9 As shown, a conveying assembly 13 is arranged in the lubrication chamber 5, and the conveying assembly 13 includes a spiral shaft 131 rotatably arranged in the lubrication chamber 5, and the spiral shaft 131 is a hollow structure. The steel wire to be stretched passes through the spiral shaft 131 through the lubrication cover 12 and enters the stretching port 6; the portion of the spiral shaft 131 located in the conveying cover 15 and the push port 16 is fixedly provided with a first spiral blade 132, and the spiral blade of the first spiral blade 132 is adapted to the structure of the push port 16 and the conveying cover 15, and the portion of the first spiral blade 132 located in the push port 16 is adapted to the push port 16. The inner wall is fitted together, and a third spiral blade 134 is fixedly provided on the portion of the first spiral blade 132 located in the conveying cover 15, and the first spiral blade 132 is fitted with the inner wall of the conveying cover 15 through the third spiral blade 134; a second spiral blade 133 connected with the first spiral blade 132 is fixedly provided on the portion of the spiral shaft 131 located in the lubrication chamber 5 away from the conveying cover 15, and a fourth spiral blade 135 is fixedly provided on the second spiral blade 133, and the second spiral blade 133 is fitted with the inner wall of the bottom of the lubrication chamber 5 through the fourth spiral blade 135.

[0041] It is worth mentioning that the structure of the third spiral blade 134 is compatible with the structure of the first spiral blade 132, and the structure of the fourth spiral blade 135 is compatible with the structure of the second spiral blade 133. In addition, the first spiral blade 132 and the fourth spiral blade 135 are both made of rubber, and the ends are structures containing several filamentous rubber strips.

[0042] In addition, a material inlet hole 136 is provided between the spiral blades on the spiral shaft 131 , and the width of the lubrication chamber 5 is matched with the width of the fourth spiral blade 135 .

[0043] Furthermore, Figure 4 As shown, one end of the spiral shaft 131 away from the conveying cover 15 extends to the outside of the stretching box 3 and is fixedly connected to the driven bevel gear 11. The stretching box 3 is fixedly provided with a driving motor 9 near the driven bevel gear 11. The output end of the driving motor 9 is fixedly provided with a driving bevel gear 10. The driving bevel gear 10 is meshed with the driven bevel gear 11. The end of the spiral shaft 131 located outside the stretching box 3 is connected to a protective cover 14 with a conical structure.

[0044] Working principle:

[0045] When the device is working, the steel wire to be stretched is passed through several groups of steel wire stretching devices, and then gradually squeezed and stretched to the corresponding diameter. For each group of steel wire stretching devices, the steel wire first passes through the protective cover 14, then enters the spiral shaft 131, and then the other end enters the stretching port 6 through the push port 16, and then passes through the stretching port 6 to be wound around the corresponding winding column 2.

[0046] During this period, the lubricating powder is poured into the lubricating chamber 5 and filled, and then the driving motor 9 is started. Then, while the steel wire is being stretched, the driving motor 9 also continues to work, and the driving motor 9 drives the spiral shaft 131 to rotate, and the rotation of the spiral shaft 131 drives the spiral blades thereon to rotate, wherein as Figure 6 As shown, the position on the right side of line a mainly concentrates a large amount of lubricating powder, while the area on the left side of line a is mainly for pushing the lubricating powder into the lubrication cover 12 and finally into the lubrication area of ​​the stretching port 6 for lubrication;

[0047] Specifically, the spiral shaft 131 rotates, and the second spiral blade 133 is driven to rotate by the rotation of the spiral shaft 131, and then the lubricating powder in the area on the right side of the a line is continuously pushed to the vicinity of the conveying cover 15, and then the rotation of the spiral shaft 131 will also drive the first spiral blade 132 to rotate, and then the first spiral blade 132 rotates to push the lubricating powder near the conveying cover 15 into the conveying cover 15 through the third spiral blade 134 thereon. Because the material of the third spiral blade 134 is relatively soft and its length is relatively long, it is ensured that the third spiral blade 134 can always fit the inner wall of the conveying cover 15, so that when the third spiral blade 134 rotates, it is reduced. The wear of the conveying cover 15 can be reduced, and the lubricating powder located near the conveying cover 15 can be pushed into the pushing port 16 at a higher position along the slope of the conveying cover 15. When the lubricating powder is pushed to the entrance of the pushing port 16, the pushing of the first spiral blade 132 does not involve a higher climbing stage, and only parallel pushing is required. Therefore, there is no third spiral blade 134 on the first spiral blade 132 located in the pushing port 16, ensuring that the first spiral blade 132 can push the lubricating powder through the pushing port 16 to the stretching port 6, so that the lubricating powder can always and concentratedly be located in the stretching port 6, ensuring that the lubricating powder can participate in the work during the extrusion and drawing stage.

[0048] The feeding hole 136 provided on the spiral shaft 131 is for the lubricating powder to enter the spiral shaft 131 to ensure that there is a certain amount of lubricating powder in the spiral shaft 131. Firstly, it can increase the area where the steel wire is lubricated. Secondly, the lubricating powder is stored in the spiral shaft 131 to ensure that the lubricating powder in the spiral shaft 131 can continue to work for a while when the lubricating powder is below the steel wire position.

[0049] When the lubricating powder is used to a position lower than the spiral shaft 131, the lubricating powder above will not directly fall into the vicinity of the conveying cover 15, because when the lubricating powder is sufficient in the early stage, in addition to being pushed by the second spiral blade 133 and the fourth spiral blade 135 on the right side of line a, the lubricating powder can also directly fall into the vicinity of the conveying cover 15 by relying on the setting of the through opening on the conveying cover 15, and be sent into the push port 16 by the first spiral blade 132 and the third spiral blade 134. However, when the lubricating powder is lower than the position of the spiral shaft 131, the second spiral blade 133 and the fourth spiral blade 135 on the right side of line a need to rotate and push to realize the main push of the lubricating powder. At the same time, due to the existence of the third spiral blade 134 and the fourth spiral blade 135, even when the lubricating powder is close to the bottom, the lubricating powder can still be pushed with the help of the design that the third spiral blade 134 and the fourth spiral blade 135 are respectively close to the inner wall of the conveying cover 15 and the inner wall of the bottom end of the lubrication chamber 5.

[0050] To sum up, the present invention effectively solves the problem that in actual operation of the existing wire drawing device, the amount of lubricating powder carried by the steel wire is limited and the utilization rate of the lubricating powder is low, resulting in insufficient lubrication of the mold and affecting the subsequent drawing effect by directly pouring lubricating powder into the mold box.

[0051] 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 by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wire drawing device for uniformly covering the surface of a steel wire with wire drawing powder, comprising a workbench (1), on which a plurality of groups of steel wire drawing devices are arranged, and the extrusion and drawing radius of each group of steel wire drawing devices gradually decreases, the steel wire drawing device comprising a winding column (2), a drawing box (3) is arranged adjacent to the winding column (2), a mold (4) is arranged at one end of the drawing box (3), and a drawing opening (6) is opened on the mold (4), characterized in that: A partition (7) is provided in one end of the stretching box (3) adjacent to the mold (4); the stretching box (3) is divided into a stretching chamber (8) and a lubrication chamber (5) by the partition (7); a lubrication cover (12) connected to the stretching port (6) is provided on one side of the partition (7) located in the stretching chamber (8); a conveying cover (15) connected to the lubrication cover (12) is provided on one side of the partition (7) located in the lubrication chamber (5); and a conveying assembly (13) is provided in the lubrication chamber (5); The conveying assembly (13) comprises a spiral shaft (131) rotatably arranged in a lubrication chamber (5), and the spiral shaft (131) is provided with a plurality of groups of spiral blades connected to each other, which are used to push the lubricating powder in the lubrication chamber (5) into the conveying cover (15) from the end away from the conveying cover (15). The spiral shaft (131) is a hollow structure, and the steel wire to be stretched passes through the spiral shaft (131) through the lubrication cover (12) and enters the stretching port (6).

2. The wire drawing device according to claim 1, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The lubricating cover (12) and the conveying cover (15) are both of conical structure. A push port (16) connected to the stretching port (6) is provided in the lubricating cover (12). The inner diameter of the narrower end of the push port (16) is matched with the inner diameter of the stretching port (6). The wider end of the push port (16) is connected to the narrower end of the conveying cover (15).

3. The wire drawing device according to claim 2, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The upper half of the conveying cover (15) is a through opening, and the bottom of the communicating portion between the conveying cover (15) and the pushing port (16) is smoothly connected.

4. The wire drawing device according to claim 3, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: A first spiral blade (132) is fixedly provided on the portion of the spiral shaft (131) located inside the conveying cover (15) and the push port (16), and the spiral blade of the first spiral blade (132) is adapted to the structure of the push port (16) and the conveying cover (15).

5. The wire drawing device according to claim 4, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The portion of the first spiral blade (132) located in the push port (16) is in contact with the inner wall of the push port (16); a third spiral blade (134) is fixedly provided on the portion of the first spiral blade (132) located in the conveying cover (15); the first spiral blade (132) is in contact with the inner wall of the conveying cover (15) via the third spiral blade (134).

6. The wire drawing device according to claim 5, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: A second spiral blade (133) connected to the first spiral blade (132) is fixedly provided on the portion of the spiral shaft (131) located in the lubrication chamber (5) away from the conveying cover (15); a fourth spiral blade (135) is fixedly provided on the second spiral blade (133); the second spiral blade (133) is in contact with the inner wall of the bottom of the lubrication chamber (5) via the fourth spiral blade (135).

7. The wire drawing device according to claim 6, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The structure of the third spiral blade (134) is compatible with the structure of the first spiral blade (132), and the structure of the fourth spiral blade (135) is compatible with the structure of the second spiral blade (133).

8. The wire drawing device according to claim 7, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The first spiral blade (132) and the fourth spiral blade (135) are both made of rubber, and the ends are structures containing a plurality of filamentous rubber strips.

9. The wire drawing device according to claim 1, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: The spiral shaft (131) is provided with a material inlet hole (136) between the spiral blades.

10. The wire drawing device according to claim 1, wherein the wire drawing powder evenly covers the surface of the steel wire, characterized in that: One end of the spiral shaft (131) away from the conveying cover (15) extends to the outside of the stretching box (3) and is fixedly connected to a driven bevel gear (11); a driving motor (9) is fixedly provided at a position of the stretching box (3) adjacent to the driven bevel gear (11); a driving bevel gear (10) is fixedly provided at the output end of the driving motor (9); the driving bevel gear (10) is meshed with the driven bevel gear (11); and one end of the spiral shaft (131) located outside the stretching box (3) is connected to a protective cover (14) with a conical structure.

Images