Wire drawing die for steel wire production

Abstract

The invention discloses a wire-drawing die for steel wire production, and relates to the technical field of wire-drawing dies, the wire-drawing die comprises a die seat, a cleaning and lubricating mechanism, an ejection mechanism, a mounting groove, a wire-drawing die and a locking mechanism; the motor drives the rotating seat to rotate, the flushing and lubricating assembly and the cleaning bristles are matched, efficient cleaning and lubricating of the steel wires are achieved, and the surface quality of the steel wires is improved; the filtering device is arranged, lubricating liquid is finely filtered, cleanliness of the lubricating liquid is guaranteed, and adverse effects of impurities on steel wires and molds are avoided; a specific locking mechanism is utilized, an adjusting head is rotated through an internal hexagonal wrench, a series of gears and a rotating ring body are driven, rapid locking and loosening of a wire-drawing die by a slope clamping block are achieved, and installation and replacement of the wire-drawing die are greatly facilitated; after the wire-drawing die is loosened, the ejection mechanism can automatically eject out the wire-drawing die, so that the wire-drawing die can be conveniently checked, maintained or replaced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire drawing dies, and particularly to a wire drawing die for wire production. Background Art

[0002] In the field of wire production, as a key piece of equipment, the performance of wire drawing dies directly affects the quality and production efficiency of wires. Many problems that urgently need to be solved have emerged during the actual use of traditional wire drawing dies.

[0003] From the perspective of the wire pretreatment process, the existing technology lacks an effective integrated cleaning and lubrication mechanism. The surface of the wire often has impurities, oil stains, etc. If not thoroughly cleaned and fully lubricated, it will not only affect the wire drawing quality, resulting in scratches and defects on the wire surface, reducing its strength and toughness, but also exacerbate the wear of the wire drawing die, shorten the service life of the die, and increase production costs. Moreover, the previous cleaning and lubrication operations were independent of each other, with cumbersome processes and low efficiency, making it difficult to meet the requirements of large-scale and high-efficiency production.

[0004] In terms of the installation and fixation of wire drawing dies, the traditional methods are either complex in the installation process, consuming a large amount of time and manpower, or not firmly fixed. During the wire drawing process, the wire drawing die is prone to displacement and loosening due to the pulling force of the wire, thus affecting the wire drawing accuracy and causing unstable product quality. At the same time, when the wire drawing die needs to be replaced or maintained, it is difficult to disassemble, further reducing production efficiency, increasing downtime, and bringing economic losses to the enterprise.

[0005] Furthermore, during the entire production process, the treatment of lubricating fluid is not delicate enough. If the lubricating fluid is not effectively filtered, the impurities in it will circulate with the lubricating fluid, not only polluting the working environment, but also reattaching to the wire surface, increasing the cleaning burden, and even possibly blocking the lubrication channels and affecting the lubrication effect.

[0006] In summary, it is extremely urgent to develop a new type of wire drawing die with a reasonable and simple structure, low production cost, convenient installation, and capable of effectively realizing wire cleaning and lubrication, firmly installing the wire drawing die, and delicately treating the lubricating fluid. Summary of the Invention

[0007] The purpose of the present invention is to provide a wire drawing die for wire production to solve the problems of poor wire cleaning and lubrication effects, inconvenient installation and replacement of wire drawing dies, and non-delicate treatment of lubricating fluid in traditional wire drawing dies.

[0008] To solve the above problems, the present invention provides a technical solution: a wire drawing die for wire production, comprising a die seat, a cleaning and lubricating mechanism, an ejection mechanism, an installation groove, a wire drawing die, and a locking mechanism; a cleaning and lubricating mechanism is provided inside the left side of the die seat, and an installation groove is provided inside the right side of the die seat; several ejection mechanisms are provided on the left side of the installation groove, and a locking mechanism is provided around the right side of the installation groove; the wire drawing die is fixedly connected inside the installation groove through the locking mechanism.

[0009] Preferably, the specific structure of the cleaning and lubricating mechanism includes a discharge pipe, a collection groove, discharge holes, an inner groove, a rotating seat, an installation cavity, cleaning brush bristles, a flushing and lubricating assembly, a driven gear, a driving gear, and a motor; the installation cavity is provided inside the central left side of the die seat, a collection groove is formed on the inner wall of the left side of the installation cavity, and the lower opening of the collection groove is connected to the upper inlet of the discharge pipe; the outside of the rotating seat is movably connected inside the installation cavity, and an inner groove is formed inside the left side of the rotating seat; there are several cleaning brush bristles, and several cleaning brush bristles are respectively and uniformly fixedly connected to the inner wall of the left side of the rotating seat; the lower side of the flushing and lubricating assembly is provided inside the right side of the rotating seat, and the upper side of the flushing and lubricating assembly is connected to the inside of the upper left side of the die seat; the driven gear is fixedly connected to the outside of the right side of the rotating seat; the motor is fixedly connected to the inside of the lower left side of the die seat, a driving gear is fixedly connected to the upper output shaft of the motor, and the driving gear is connected to the driven gear.

[0010] Preferably, the specific structure of the flushing and lubricating assembly includes a filtering device, an annular groove, communication holes, an annular cavity, flushing holes, lubricating holes, and isolation brush bristles; the filtering device is fixedly connected to the inside of the upper left side of the die seat; the annular groove is formed on the inner wall of the right side of the installation cavity, and the upper opening of the annular groove is connected to the lower outlet of the filtering device; the annular cavity is provided inside the periphery of the right side of the rotating seat, several communication holes are provided on the outer side of the annular cavity, and the outer sides of the communication holes are all connected to the inside of the annular groove, several flushing holes are formed on the left inner side of the annular cavity, and several lubricating holes are formed on the right inner side of the annular cavity; there are several isolation brush bristles, and several isolation brush bristles are all located between the flushing holes and the lubricating holes, and several isolation brush bristles are respectively and uniformly provided on the inner wall of the right side of the rotating seat.

[0011] Preferably, the specific structure of the filtering device includes a filtering housing, a filtering cavity, a filter element, an input pipe, and an output pipe; a filtering cavity is provided inside the filtering housing, and a filter element is provided in the center of the filtering cavity; one opening of the input pipe is fixedly connected to the right opening of the filtering cavity, and one opening of the input pipe is connected to the inside of the center of the filter element; one opening of the output pipe is connected to the lower left opening of the filtering cavity, and one opening of the output pipe is connected to the outside of the filter element.

[0012] Preferably, the motor is a servo motor or a stepper motor.

[0013] Preferably, the specific structure of the ejection mechanism includes a guide hole, a top block, a connection hole and a spring; the guide hole is opened on the left side surface of the installation groove, and the top block is movably connected inside the guide hole; the connection hole is arranged inside the left side of the top block, and a spring is arranged between the connection hole and the left side of the guide hole.

[0014] Preferably, the specific structure of the locking mechanism includes an adjusting head, a first bevel gear, a second bevel gear, a rotating ring body, a spiral groove, a convex groove and an inclined surface clamping block; the rotating ring body is movably connected inside the periphery of the right side of the mold base, the second bevel gear is fixedly connected to the outside of the left side of the rotating ring body, and a spiral groove is opened on the right side surface of the rotating ring body; the first bevel gear is movably connected inside the upper right side of the mold base, the first bevel gear is connected to the second bevel gear, and the adjusting head is fixedly connected to the central axis on the upper side of the first bevel gear; the number of the inclined surface clamping blocks is several, and several inclined surface clamping blocks are respectively movably connected inside the periphery of the right side of the installation groove, convex grooves are arranged on the left sides of several inclined surface clamping blocks, and the convex grooves are connected to the inner side of the spiral groove.

[0015] Preferably, an internal hexagonal hole is opened in the center of the outside of the adjusting head.

[0016] The beneficial effects of the present invention are as follows: (1) The present invention has the characteristics of reasonable and simple structure, low production cost and convenient installation. By driving the rotating seat to rotate by a motor and cooperating with the flushing and lubricating assembly and the cleaning brush bristles, the high-efficiency cleaning and lubrication of the steel wire are realized, and the surface quality of the steel wire is improved.

[0017] (2) The present invention is provided with a filtering device to finely filter the lubricating liquid, ensure the cleanliness of the lubricating liquid, and avoid the adverse effects of impurities on the steel wire and the mold.

[0018] (3) The present invention utilizes a specific locking mechanism. By rotating the adjusting head with an internal hexagonal wrench, a series of gears and the rotating ring body are driven, and the inclined surface clamping block realizes the rapid locking and loosening of the wire drawing die, which greatly facilitates the installation and replacement of the wire drawing die.

[0019] (4) After the wire drawing die is loosened in the present invention, the ejection mechanism can automatically eject the wire drawing die, which is convenient for inspecting, maintaining or replacing the wire drawing die and improves the production efficiency. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present invention.

[0021] Figure 2 is Figure 1 a cross-sectional view of

[0022] Figure 3 It is a schematic structural diagram of the cleaning and lubricating mechanism.

[0023] Figure 4It is a schematic structural diagram of a flushing and lubricating assembly.

[0024] Figure 5 It is a schematic structural diagram of a filtering device.

[0025] Figure 6 It is a schematic structural diagram of an ejection mechanism.

[0026] Figure 7 It is a schematic structural diagram of a locking mechanism.

[0027] 1 - Mold base; 2 - Cleaning and lubricating mechanism; 3 - Ejection mechanism; 4 - Installation groove; 5 - Drawing die; 6 - Locking mechanism; 21 - Discharge pipe; 22 - Collection tank; 23 - Discharge hole; 24 - Inner groove; 25 - Rotating seat; 26 - Installation cavity; 27 - Cleaning brush; 28 - Flushing and lubricating assembly; 29 - Driven gear; 210 - Driving gear; 211 - Motor; 281 - Filtering device; 282 - Annular groove; 283 - Communication hole; 284 - Annular cavity; 285 - Flushing hole; 286 - Lubricating hole; 287 - Isolation brush; 2811 - Filter housing; 2812 - Filter cavity; 2813 - Filter element; 2814 - Input pipe; 2815 - Output pipe; 31 - Guide hole; 32 - Top block; 33 - Connection hole; 34 - Spring; 61 - Adjusting head; 62 - Bevel gear 1; 63 - Bevel gear 2; 64 - Swivel body; 65 - Helical groove; 66 - Protruding groove; 67 - Inclined surface block. Detailed implementation mode

[0028] As Figure 1 and Figure 2 shown, the following technical solutions are adopted in this detailed implementation mode: A drawing die for steel wire production includes a mold base 1, a cleaning and lubricating mechanism 2, an ejection mechanism 3, an installation groove 4, a drawing die 5 and a locking mechanism 6; The cleaning and lubricating mechanism 2 is arranged inside the left side of the mold base 1, and the installation groove 4 is arranged inside the right side of the mold base 1; Several ejection mechanisms 3 are arranged on the left side of the installation groove 4, and the locking mechanism 6 is arranged around the right side of the installation groove 4; The drawing die 5 is fixedly connected inside the installation groove 4 through the locking mechanism 6.

[0029] As Figure 3As shown, the specific structure of the cleaning and lubricating mechanism 2 includes a discharge pipe 21, a collection tank 22, a discharge hole 23, an inner groove 24, a rotating seat 25, an installation cavity 26, cleaning bristles 27, a flushing and lubricating assembly 28, a driven gear 29, a driving gear 210, and a motor 211. The installation cavity 26 is provided inside the center of the left side of the mold base 1. A collection tank 22 is formed on the left inner wall of the installation cavity 26, and the lower opening of the collection tank 22 is connected to the upper inlet of the discharge pipe 21. The outer part of the rotating seat 25 is movably connected inside the installation cavity 26, and an inner groove 24 is formed on the left side inside the rotating seat 25. There are several cleaning bristles 27, and several cleaning bristles 27 are respectively and evenly fixedly connected to the left inner wall of the rotating seat 25. The lower part of the flushing and lubricating assembly 28 is provided inside the right side of the rotating seat 25, and the upper part of the flushing and lubricating assembly 28 is inside the upper left side of the mold base 1. The inner part of the driven gear 29 is fixedly connected to the outer part of the right side of the rotating seat 25. The motor 211 is fixedly connected inside the lower left side of the mold base 1, and a driving gear 210 is fixedly connected to the upper output shaft of the motor 211, and the driving gear 210 is connected to the driven gear 29.

[0030] As Figure 4 shown, the specific structure of the flushing and lubricating assembly 28 includes a filtering device 281, an annular groove 282, a communication hole 283, an annular cavity 284, a flushing hole 285, a lubricating hole 286, and an isolation brush 287. The filtering device 281 is fixedly connected inside the upper left side of the mold base 1. The annular groove 282 is formed on the right inner wall of the installation cavity 26, and the upper opening of the annular groove 282 is connected to the lower outlet of the filtering device 281. The annular cavity 284 is provided inside the four-week of the right side of the rotating seat 25. Several communication holes 283 are provided on the outer side of the annular cavity 284, and the outer sides of the communication holes 283 are all connected to the inside of the annular groove 282. Several flushing holes 285 are formed on the left inner side of the annular cavity 284, and several lubricating holes 286 are formed on the right inner side of the annular cavity 284. There are several isolation brushes 287, and several isolation brushes 287 are all located between the flushing holes 285 and the lubricating holes 286. Several isolation brushes 287 are respectively and evenly provided on the right inner wall of the rotating seat 25.

[0031] As Figure 5As shown, the specific structure of the filtering device 281 includes a filtering housing 2811, a filtering chamber 2812, a filter element 2813, an input pipe 2814, and an output pipe 2815; a filtering chamber 2812 is provided inside the filtering housing 2811, and a filter element 2813 is provided in the center inside the filtering chamber 2812; one side opening of the input pipe 2814 is fixedly connected to the right side opening of the filtering chamber 2812, and one side opening of the input pipe 2814 is communicated with the inside of the center of the filter element 2813; one side opening of the output pipe 2815 is connected to the lower left side opening of the filtering chamber 2812, and one side opening of the output pipe 2815 is communicated with the outside of the filter element 2813.

[0032] Among them, the motor 211 is a servo motor or a stepper motor.

[0033] As Figure 6 shown, the specific structure of the ejecting mechanism 3 includes a guide hole 31, a top block 32, a connecting hole 33, and a spring 34; the guide hole 31 is opened on the left side surface of the mounting groove 4, and a top block 32 is movably connected inside the guide hole 31; the connecting hole 33 is provided inside the left side of the top block 32, and a spring 34 is provided between the left side of the connecting hole 33 and the left side of the guide hole 31.

[0034] As Figure 7 shown, the specific structure of the locking mechanism 6 includes an adjusting head 61, a bevel gear 62, a bevel gear 63, a rotating ring body 64, a spiral groove 65, a convex groove 66, and an inclined surface clamping block 67; the rotating ring body 64 is movably connected inside the periphery of the right side of the mold base 1, a bevel gear 63 is fixedly connected to the outside of the left side of the rotating ring body 64, and a spiral groove 65 is opened on the right side surface of the rotating ring body 64; the bevel gear 62 is movably connected inside the upper right side of the mold base 1, the bevel gear 62 is connected to the bevel gear 63, and an adjusting head 61 is fixedly connected to the central axis on the upper side of the bevel gear 62; the inclined surface clamping blocks 67 are several, and several inclined surface clamping blocks 67 are respectively movably connected inside the periphery of the right side of the mounting groove 4, convex grooves 66 are provided on the left sides of several inclined surface clamping blocks 67, and the convex grooves 66 are all connected to the inner side of the spiral groove 65.

[0035] Among them, an internal hexagonal hole is opened in the center of the outer side of the adjusting head 61.

[0036] The usage state of the present invention is as follows: The present invention has a reasonable and simple structure, low production cost, and is easy to install. During the production process of steel wires, the steel wire to be drawn is passed through the cleaning and lubricating mechanism 2. The motor 211 is started. The motor 211 can be a servo motor or a stepper motor, which drives the driving gear 210 to rotate. The driving gear 210 meshes with the driven gear 29, so that the rotating seat 25 rotates in the installation cavity 26. At this time, the flushing and lubricating assembly 28 starts to work. The external lubricating liquid is processed by the filtering device 281. In the filtering device 281, the liquid enters the filtering cavity 2812 from the input pipe 2814, and after being filtered by the filter element 2813, it flows out from the output pipe 2815 to the annular groove 282. The liquid in the annular groove 282 enters the annular cavity 284 inside the periphery of the rotating seat 25 through the communication holes 283, and then sprays out from the flushing holes 285 and the lubricating holes 286 respectively to flush and lubricate the passing steel wire. At the same time, the isolation brush 287 prevents the flushing liquid and the lubricating liquid from mixing with each other. During the rotation of the rotating seat 25, the cleaning bristles 27 fixed on the left inner wall thereof clean the surface of the steel wire, and the impurities removed fall into the collection tank 22 and are discharged through the discharge pipe 21. The steel wire after cleaning and lubrication enters the wire drawing die 5 in the installation groove 4 for wire drawing operation. The wire drawing die 5 is fixed inside the installation groove 4 through the locking mechanism 6. When it is necessary to install or replace the wire drawing die 5, an inner hexagon wrench is inserted into the inner hexagon hole in the center of the outer side of the adjusting head 61, and the adjusting head 61 is rotated. The adjusting head 61 drives the bevel gear 62 to rotate. The bevel gear 62 is connected to the bevel gear 63, so that the rotating ring body 64 rotates. The spiral groove 65 on the rotating ring body 64 interacts with the convex groove 66 on the inclined surface clamping block 67, and several inclined surface clamping blocks 67 move inside the periphery of the right side of the installation groove 4, so as to loosen or lock the wire drawing die 5. After the wire drawing die 5 is loosened, the ejecting mechanism 3 plays an ejecting role, which brings great convenience to the loading and unloading of the wire drawing die 5, and thus facilitates the inspection, maintenance or replacement of the wire drawing die 5.

[0037] The control mode of the present invention is controlled by manual start or through existing automation technologies. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present invention is mainly used to protect mechanical devices, so the control mode and wiring layout of the present invention will not be explained in detail.

[0038] In the description of the invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention.

[0039] In the invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0040] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the invention. Without departing from the spirit and scope of the invention, the invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The scope of the invention claimed is defined by the appended claims and their equivalents.

Claims

1. A wire drawing die for steel wire production, characterized in that: It comprises a die base (1), a cleaning and lubricating mechanism (2), an ejection mechanism (3), a mounting groove (4), a wire drawing die (5) and a locking mechanism (6); A cleaning and lubrication mechanism (2) is provided inside the left side of the mold base (1), and a mounting groove (4) is provided inside the right side of the mold base (1); A plurality of ejection mechanisms (3) are provided on the left side of the installation groove (4), and locking mechanisms (6) are provided around the right side of the installation groove (4); The wire drawing die (5) is fixedly connected inside the installation groove (4) via a locking mechanism (6).

2. The wire drawing die for steel wire production according to claim 1, characterized in that: The specific structure of the cleaning and lubricating mechanism (2) comprises a discharge pipe (21), a collecting groove (22), a discharge hole (23), an inner groove (24), a rotating seat (25), a mounting cavity (26), cleaning bristles (27), a flushing and lubricating component (28), a driven gear (29), a driving gear (210) and a motor (211); The installation cavity (26) is arranged in the center of the left side of the mold base (1), and a collecting groove (22) is opened on the left side of the inner wall of the installation cavity (26), and the lower opening of the collecting groove (22) is connected to the upper inlet of the discharge pipe (21); The outside of the rotating seat (25) is movably connected to the inside of the installation cavity (26), and an inner groove (24) is provided on the left side inside the rotating seat (25); There are a plurality of cleaning bristles (27), and the plurality of cleaning bristles (27) are evenly fixedly connected to the left inner wall of the rotating seat (25); The lower side of the flushing and lubricating component (28) is arranged inside the right side of the rotating seat (25), and the upper side of the flushing and lubricating component (28) is arranged inside the upper left side of the mold seat (1); The driven gear (29) is internally fixedly connected to the right exterior of the rotating seat (25); The motor (211) is fixedly connected inside the lower left side of the mold base (1), and a driving gear (210) is fixedly connected to the output shaft on the upper side of the motor (211), and the driving gear (210) is connected to the driven gear (29).

3. The wire drawing die for steel wire production according to claim 2, characterized in that: The specific structure of the flushing and lubricating assembly (28) comprises a filter device (281), an annular groove (282), a communication hole (283), an annular cavity (284), a flushing hole (285), a lubrication hole (286), and an isolation brush (287); The filtering device (281) is fixedly connected to the interior of the upper left side of the mold base (1); The annular groove (282) is formed on the right inner wall of the installation cavity (26), and the upper opening of the annular groove (282) is connected to the lower outlet of the filter device (281); The annular cavity (284) is arranged inside the right side of the rotating seat (25); a plurality of communication holes (283) are arranged outside the annular cavity (284); and the outsides of the communication holes (283) are connected to the inside of the annular groove (282); a plurality of flushing holes (285) are opened on the left inner side of the annular cavity (284); and a plurality of lubrication holes (286) are opened on the right inner side of the annular cavity (284); There are a plurality of isolation brushes (287), each of which is located between the flushing hole (285) and the lubrication hole (286), and each of which is evenly arranged on the right inner wall of the rotating seat (25).

4. The wire drawing die for steel wire production according to claim 3, characterized in that: The specific structure of the filtering device (281) includes a filtering housing (2811), a filtering chamber (2812), a filter element (2813), an input pipe (2814), and an output pipe (2815); A filter cavity (2812) is provided inside the filter housing (2811), and a filter element (2813) is provided in the center of the filter cavity (2812); One side opening of the input pipe (2814) is fixedly connected to the right side opening of the filter chamber (2812), and one side opening of the input pipe (2814) is connected to the central interior of the filter element (2813); An opening on one side of the output tube (2815) is connected to an opening on the lower left side of the filter chamber (2812), and an opening on one side of the output tube (2815) is in communication with the outside of the filter element (2813).

5. The wire drawing die for steel wire production according to claim 2, characterized in that: The motor (211) is a servo motor or a stepper motor.

6. The wire drawing die for steel wire production according to claim 1, characterized in that: The specific structure of the ejection mechanism (3) includes a guide hole (31), a top block (32), a connecting hole (33) and a spring (34); The guide hole (31) is formed on the left side surface of the installation groove (4), and a top block (32) is movably connected inside the guide hole (31); The connection hole (33) is arranged inside the left side of the top block (32), and a spring (34) is arranged between the connection hole (33) and the left side of the guide hole (31).

7. The wire drawing die for steel wire production according to claim 1, characterized in that: The specific structure of the locking mechanism (6) comprises an adjusting head (61), a bevel gear 1 (62), a bevel gear 2 (63), a rotating ring body (64), a spiral groove (65), a convex groove (66) and an inclined surface block (67); The rotating ring body (64) is movably connected to the inside of the right side of the mold base (1), the left side of the rotating ring body (64) is fixedly connected to the second bevel gear (63), and the right side surface of the rotating ring body (64) is provided with a spiral groove (65); The bevel gear 1 (62) is movably connected to the inside of the upper right side of the mold base (1), the bevel gear 1 (62) is connected to the bevel gear 2 (63), and the adjusting head (61) is fixedly connected to the central axis on the upper side of the bevel gear 1 (62); There are a plurality of inclined surface blocks (67), each of which is movably connected to the inside of the right side of the installation groove (4); a convex groove (66) is provided on the left side of each of the inclined surface blocks (67), and the convex groove (66) is connected to the inner side of the spiral groove (65).

8. The wire drawing die for steel wire production according to claim 7, characterized in that: A hexagonal hole is provided at the center of the outer side of the adjusting head (61).

Images