Wire drawing machine capable of adjusting wire drawing force

Abstract

The invention belongs to the technical field of metal wire drawing equipment, and particularly relates to a wire drawing machine capable of adjusting wire drawing strength. The device aims at solving the problem that an existing device only uses a fixed die to draw a metal wire and is inconvenient to use. Comprising a workbench, a powder containing box and a fixing frame are fixedly connected to the upper side of the workbench, an extrusion head and evenly-distributed supporting rings are fixedly connected to the upper side of the fixing frame, and evenly-distributed first rotating cylinders and evenly-distributed second rotating cylinders are arranged on the upper side of the fixing frame; the first rotating cylinder and the second rotating cylinder are both slidably connected with sliding frames which are evenly distributed in the circumferential direction, and the sliding frames are rotatably connected with extrusion rollers. According to the metal wire drawing device, a plurality of extrusion rollers are matched with one another to replace a traditional fixed die, and by adjusting the positions of the extrusion rollers and adjusting the wire drawing force borne in the metal wire drawing process, the device does not need to additionally prepare fixed dies of various specifications for different types of metal wires.

Description

Technical Field

[0001] The present invention pertains to the technical field of wire drawing equipment, and particularly relates to a wire drawing machine capable of adjusting the wire drawing force. Background Art

[0002] During the production process of metal wires (copper wires, titanium wires), they are usually first produced in a unified specification. Subsequently, when metal wires of different diameters are required, the thicker metal wires are gradually drawn into the required diameter using a wire drawing machine. Most wire drawing machines are cold drawing machines. Without heating the metal wire, lubricating powder is covered on the outer surface of the metal wire, and then the metal wire is gradually passed through multiple serially connected dies in sequence. Multiple dies form a group, and the inner surface diameter of each die is smaller than the current diameter of the metal wire, prompting the metal wire to be gradually extruded by the die during the drawing process and deformed into a metal wire with a smaller diameter until the diameter of the metal wire is the same as the required diameter.

[0003] However, in the existing metal wire drawing process, only a fixed set of dies is used to draw the metal wire. Since there are significant differences in the hardness and toughness of metal wires of different types, specifications, and materials, when drawing different types of metal wires, all the dies on the production line need to be uniformly replaced. By changing the variation range of the aperture of the dies in each group, the wire drawing force exerted on the metal wire during the drawing process is changed to ensure that the metal wire can maintain a large deformation amount during each drawing process while avoiding breakage of the metal wire due to excessive wire drawing force. Therefore, the existing device usually requires preparing a large variety of dies, and when drawing different types of metal wires, the used dies need to be replaced sequentially, resulting in inconvenience in using the existing device. If the dies are replaced incorrectly, there is also a risk of breaking the metal wire. Summary of the Invention

[0004] In order to overcome the drawback that the existing device only uses fixed dies to draw metal wires and is inconvenient to use, the present invention provides a wire drawing machine capable of adjusting the wire drawing force.

[0005] The technical solution of the present invention is as follows: A wire drawing machine with adjustable wire drawing force, comprising a workbench, on the upper side of which a powder storage box and a fixing frame are fixedly connected. On the upper side of the fixing frame, an extrusion head and evenly distributed support rings are fixedly connected. On the upper side of the fixing frame, evenly distributed first rotating cylinders and evenly distributed second rotating cylinders are arranged. The extrusion head is rotationally connected to the adjacent first rotating cylinder, and both the second rotating cylinder and the first rotating cylinder are rotationally connected to the adjacent support ring. The evenly distributed first rotating cylinders and the evenly distributed second rotating cylinders are staggered. A circumferentially evenly distributed sliding frame is slidably connected to both the first rotating cylinder and the second rotating cylinder. A first elastic member is fixedly connected between both the first rotating cylinder and the second rotating cylinder and the adjacent sliding frame. The sliding frame is rotationally connected with an extrusion roller, and all the extrusion rollers are respectively located inside the adjacent first rotating cylinder and the adjacent second rotating cylinder. A wedge-shaped block is fixedly connected to the sliding frame, and all the wedge-shaped blocks are respectively located outside the adjacent first rotating cylinder and the adjacent second rotating cylinder. A driving mechanism for pulling the metal wire to move is arranged on the upper side of the workbench.

[0006] Preferably, the wedge-shaped blocks on the same first rotating cylinder are in a group, and the wedge-shaped blocks on the same second rotating cylinder are in a group. Except for the group of wedge-shaped blocks farthest from the extrusion head, in the direction from the side close to the extrusion head to the side away from the extrusion head, the inclination angles of different groups of wedge-shaped blocks gradually increase.

[0007] Preferably, the inclination angle of the group of wedge-shaped blocks farthest from the extrusion head is the same as that of the adjacent group of wedge-shaped blocks.

[0008] Preferably, an electric push rod is fixedly connected to one side of the powder storage box close to the fixing frame. The telescopic end of the electric push rod is fixedly connected with a moving frame. The moving frame is fixedly connected with evenly distributed extrusion rings. The number of the extrusion rings is the same as the number of groups of the wedge-shaped blocks. The extrusion rings are in extrusion fit with all the wedge-shaped blocks of the adjacent groups.

[0009] Preferably, the driving mechanism includes a motor fixed to the lower part of the workbench. A first pulley is fixed to the output shaft of the motor. A rotating ring is rotatably connected to the upper side of the first pulley. A wire winding roller is fixed to the upper side of the rotating ring. A second pulley is rotatably connected to the upper side of the workbench. The second pulley and the first pulley are driven by a belt. A transmission shaft is rotatably connected to the upper side of the workbench through a bracket. The transmission shaft and the second pulley are driven by a bevel gear set. A large gear is fixed to the outer side of the first rotating cylinder. A small gear is fixed to the outer side of the second rotating cylinder. All the large gears and all the small gears are driven by a gear set with the transmission shaft. The large gears and the small gears have the same rotational speed and opposite rotation directions. A detection component for detecting the pulling force of the metal wire rope is arranged on the output shaft of the motor.

[0010] Preferably, the diameter of the first pulley is more than twice the diameter of the second pulley.

[0011] Preferably, a wire dividing member in a spiral shape is arranged on the outer side of the wire winding roller.

[0012] Preferably, the detection component includes a rotating cylinder rotatably connected inside the wire winding roller. The rotating cylinder is fixed to the output shaft of the motor. A rotating rod is in threaded connection with the rotating cylinder. The output shaft of the motor is slidably connected with a first extrusion block evenly distributed circumferentially. The first extrusion block is slidably connected with a second extrusion block. A second elastic member is fixed between the first extrusion block and the adjacent second extrusion block. The first extrusion block is in limit cooperation with the rotating ring. The second extrusion block is in extrusion cooperation with the rotating rod.

[0013] Preferably, a clockwork spring is fixed to the output shaft of the motor. The clockwork spring is in contact cooperation with the rotating ring, and the clockwork spring is in a power storage state in the initial state.

[0014] Preferably, an extrusion mechanism for extruding the lubricating powder in the powder storage box is further included. The extrusion mechanism is arranged on the upper side of the powder storage box. The extrusion mechanism includes a sealing cover installed on the upper side of the powder storage box. An extrusion plate is slidably connected to the sealing cover. A third elastic member is fixed between the extrusion plate and the sealing cover.

[0015] The present invention has at least the following characteristics: Through the cooperation of multiple extrusion rollers, the present invention replaces the traditional fixed die. By adjusting the positions of the extrusion rollers, the wire drawing force received during the metal wire drawing process is adjusted, so that the device no longer needs to prepare multiple specifications of fixed dies for different types of metal wires additionally.

[0016] The present invention detects the drawing force on the wire through a detection component. When the drawing force increases, the drawing of the wire is stopped in a timely manner to avoid wire breakage caused by forced drawing when the wire quality is uneven. When the drawing of the wire is stopped, the output shaft of the motor still controls the wire winding roller to continue to tighten the wire through a spring, avoiding a large reverse rotation of the wire winding roller, which may cause the wire to loosen and coil in the first rotating cylinder and the second rotating cylinder.

[0017] The present invention extrudes lubricating powder through an extrusion plate to maintain a large pressure between the lubricating powder and the wire, thereby ensuring a closer connection between the wire and the adjacent lubricating powder and reducing the probability of the lubricating powder falling off when the wire vibrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a three-dimensional structural schematic diagram of the workbench, powder storage box and fixing frame of the present invention;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the workbench, powder storage box and motor of the present invention;

[0021] Figure 4 is a three-dimensional structural schematic diagram of the powder storage box, fixing frame and moving frame of the present invention;

[0022] Figure 5 is an exploded schematic diagram of the fixing frame, support ring and transmission shaft of the present invention;

[0023] Figure 6 is an exploded schematic diagram of the first rotating cylinder, second rotating cylinder and moving frame of the present invention;

[0024] Figure 7 is a cross-sectional view of the extrusion head, support ring and first rotating cylinder of the present invention;

[0025] Figure 8 is a cross-sectional view of the rotating ring, wire winding roller and rotating cylinder of the present invention;

[0026] Figure 9 is a three-dimensional structural schematic diagram of the rotating ring, rotating rod and first pressing block of the present invention;

[0027] Figure 10 is a cross-sectional view of the motor, first belt pulley and rotating ring of the present invention.

[0028] Symbols in the figure: 1 - Workbench, 2 - Powder box, 3 - Fixed frame, 4 - Extrusion head, 5 - Support ring, 6 - First rotating cylinder, 7 - Second rotating cylinder, 8 - Sliding frame, 9 - First elastic member, 10 - Extrusion roller, 11 - Wedge block, 12 - Electric push rod, 13 - Moving frame, 14 - Extrusion ring, 15 - Motor, 16 - First pulley, 17 - Rotating ring, 18 - Wire winding roller, 19 - Second pulley, 20 - Transmission shaft, 21 - Large gear, 22 - Small gear, 23 - Wire dividing member, 24 - Rotating cylinder, 25 - Rotating rod, 27 - First extrusion block, 28 - Second extrusion block, 29 - Second elastic member, 30 - Spring, 31 - Sealing cover, 32 - Extrusion plate, 33 - Third elastic member. Detailed implementation mode

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components (such as the first rotating cylinder 6, the second rotating cylinder 7, and adjacent components) of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different quantities and sizes.

[0030] Embodiment 1: When the existing wire drawing machine draws a metal wire, only a set of fixed dies can be used to draw the metal wire. However, the hardness and toughness of different types and specifications of metal wires are different. When drawing different types of metal wires, a set of fixed dies adapted to the hardness and toughness of the metal wire needs to be used separately. Therefore, it often causes workers to need to replace the dies connected in series on the production line together before drawing the metal wire. The replacement process is too complex and lacks convenience.

[0031] A wire drawing machine capable of adjusting the wire drawing force, refer to Figures 1 - 7As shown, a workbench 1 is included, a powder box 2 and a fixed frame 3 are fixedly connected to the upper side of the workbench 1, the fixed frame 3 is located on the right side of the powder box 2, an extrusion head 4 and five evenly distributed support rings 5 ​​are fixedly connected to the upper side of the fixed frame 3, an evenly distributed first rotating cylinder 6 and an evenly distributed second rotating cylinder 7 are arranged on the upper side of the fixed frame 3, the extrusion head 4 is rotatably connected to the adjacent first rotating cylinder 6, the second rotating cylinder 7 and the first rotating cylinder 6 are both rotatably connected to the adjacent support ring 5, wherein three first rotating cylinders 6 and two second rotating cylinders 7 are staggered, the first rotating cylinder 6 and the second rotating cylinder 7 both extrude the metal wire through adjacent parts, replacing the traditional fixed mold, the first rotating cylinder 6 and the second rotating cylinder 7 are both slidably connected There are eight sliding frames 8 evenly distributed in the circumferential direction. The first rotating drum 6 and the second rotating drum 7 are fixedly connected to the adjacent sliding frames 8 with a first elastic member 9, which is a spring. The first elastic member 9 is located on the outer side of the adjacent first rotating drum 6 and the adjacent second rotating drum 7. The sliding frame 8 is rotatably connected with an extrusion roller 10, which is in rolling contact with the metal wire to reduce the friction resistance of the metal wire during the drawing process. All the extrusion rollers 10 are respectively located on the inner side of the adjacent first rotating drum 6 and the adjacent second rotating drum 7. The sliding frame 8 is fixedly connected with a wedge block 11. The wedge blocks 11 on the same first rotating drum 6 are a group, and the wedge blocks 11 on the same second rotating drum 7 are a group. Except for the rightmost group of wedge blocks 11, the inclination angles of the wedge blocks 11 of different groups gradually increase from left to right, so when the wedge blocks 11 of different groups are squeezed horizontally to the right, the distance that the wedge blocks 11 drive the adjacent sliding frames 8 to move into the adjacent first rotating cylinder 6 and the adjacent second rotating cylinder 7 gradually increases from left to right. Except for the squeezing rollers 10 of the rightmost group, all squeezing rollers 10 form a trapezoidal cylinder structure with a gradually decreasing diameter from left to right, thereby uniformly providing a pulling force on the metal wire. The inclination angle of the rightmost group of wedge blocks 11 is the same as the inclination angle of the adjacent group of wedge blocks 11. Therefore, the rightmost group of wedge blocks 11 does not provide additional squeezing force on the metal wire through the adjacent sliding frames 8. The wedge blocks 11 are respectively located on the outside of the adjacent first rotating drum 6 and the adjacent second rotating drum 7. An electric push rod 12 electrically connected to the remote control terminal is fixedly connected to the right side of the powder box 2. A movable frame 13 is fixedly connected to the telescopic end of the electric push rod 12. Five evenly distributed extrusion rings 14 are fixedly connected to the lower side of the movable frame 13. The extrusion rings 14 are coaxial with the adjacent first rotating drum 6 and the adjacent second rotating drum 7. The extrusion rings 14 are extruded and matched with all the wedge blocks 11 of the adjacent group. The movable frame 13 is used to push the wedge block 11 to the right, so that the wedge block 11 drives the adjacent sliding frame 8 to move in the direction of the metal wire. A driving mechanism for pulling the metal wire to move is provided on the upper side of the workbench 1, and the driving mechanism is electrically connected to the remote control terminal.

[0032] refer to Figures 2 - 6As shown in the figure, the driving mechanism includes a motor 15 electrically connected to a remote control terminal. The motor 15 is fixedly connected to the lower part of the workbench 1. The upper part of the output shaft of the motor 15 is fixedly connected with a first pulley 16. A rotating ring 17 is rotatably connected to the upper side of the first pulley 16. A wire winding roller 18 is fixedly connected to the upper side of the rotating ring 17. A spiral wire dividing member 23 is arranged on the outer side of the wire winding roller 18. The wire dividing member 23 is used to assist the metal wire to be spirally wound around the wire winding roller 18. By driving the wound metal wire to rotate, the wire winding roller 18 pulls out the metal wire from the first rotating cylinder 6 and the second rotating cylinder 7. A second pulley 19 is rotatably connected to the upper side of the workbench 1. The second pulley 19 and the first pulley 16 are driven by a belt. The diameter of the first pulley 16 is more than twice the diameter of the second pulley 19, so as to ensure that the rotation speed of the second pulley 19 is greater than that of the first pulley 16, making the rotation speeds of the first rotating cylinder 6 and the second rotating cylinder 7 greater than the drawing speed of the metal wire. Thus, the extrusion rollers 10 of the same group rotate to form an approximate circle, providing better extrusion force for the metal wire. A transmission shaft 20 is rotatably connected to the upper side of the workbench 1 through a bracket. The transmission shaft 20 and the second pulley 19 are driven by a bevel gear set. A large gear 21 is fixedly connected to the outer side of the first rotating cylinder 6. A small gear 22 is fixedly connected to the outer side of the second rotating cylinder 7 (refer to Figure 5 and Figure 6 as shown). All the large gears 21 and all the small gears 22 are driven by a gear set with the transmission shaft 20 (refer to Figure 5 as shown), and it is ensured that the rotation speeds of the large gear 21 and the small gear 22 are the same and the rotation directions are opposite, making the rotation speeds of the first rotating cylinder 6 and the second rotating cylinder 7 the same and the rotation directions opposite, so as to ensure the uniformity of the torque on the metal wire. The extrusion rollers 10 of the rightmost group do not provide additional extrusion force for the metal wire, but only provide a force to balance the torque of the extrusion rollers 10 of the adjacent group. A detection component for detecting the pulling force of the metal wire rope is arranged on the output shaft of the motor 15.

[0033] Refer to Figures 8 - 10As shown in the figure, the detection component includes a rotating cylinder 24 rotatably connected inside the wire winding roller 18. The rotating cylinder 24 is fixedly connected to the output shaft of the motor 15. The rotating cylinder 24 is threadedly connected to a rotating rod 25. A handle for facilitating the rotation by the staff is arranged on the upper side of the rotating rod 25. Three first extrusion blocks 27 evenly distributed circumferentially are slidably connected to the upper side of the output shaft of the motor 15. The first extrusion blocks 27 are provided with inclined surfaces. The first extrusion blocks 27 are in limit fit with the rotating ring 17 through the inclined surfaces, and are used to drive the rotating ring 17 to rotate following the output shaft of the motor 15. A second extrusion block 28 is slidably connected to the first extrusion block 27. A second elastic member 29 is fixedly connected between the first extrusion block 27 and the adjacent second extrusion block 28. The second elastic member 29 is a spring. An inclined surface is arranged on the upper side of the second extrusion block 28. A conical surface is arranged on the lower side of the rotating rod 25. The second extrusion block 28 is in extrusion fit with the conical surface of the rotating rod 25 through the inclined surface, and is used to adjust the elastic force of the second elastic member 29. A clockwork spring 30 is fixedly connected to the upper side of the output shaft of the motor 15. The clockwork spring 30 is in contact fit with the rotating ring 17. When relative rotation occurs between the output shaft of the motor 15 and the rotating ring 17, the output shaft of the motor 15 provides a force towards the rotating direction to the rotating ring 17 through the clockwork spring 30, thereby preventing the rotating ring 17 from reversing and causing the metal wire to be relaxed, and the clockwork spring 30 is in a state of storing energy in its initial state.

[0034] When the staff is preparing to draw the metal wire, first, a plurality of workbenches 1 are spliced together, and then the metal wire is installed on a plurality of this device in sequence. At this time, the diameters of all the first rotating cylinders 6 and all the second rotating cylinders 7 on the plurality of workbenches 1 gradually decrease in the order of the metal wire passing through, so that the diameters of the trapezoid-like cylinders on the plurality of workbenches 1 gradually decrease. Taking one of this device as an example, the installation and working process are described as follows:

[0035] First, the staff thread the wire into the powder box 2 from the left side of the powder box 2, and then make the wire pass out from the right side of the powder box 2. Insert the wire into the extrusion head 4. The staff controls the wire to pass through all the first rotating cylinders 6 and all the second rotating cylinders 7 in sequence. At this time, since the wedge block 11 is not in extrusion fit with the adjacent extrusion ring 14, the extrusion roller 10 does not extrude the wire. Therefore, the resistance of the wire passing through the extrusion head 4, all the first rotating cylinders 6 and all the second rotating cylinders 7 is small. After the staff threads the wire through, they control the wire to be wound around the wire winding roller 18 along the spiral path of the wire dividing member 23, and then lead the wire out into the powder box 2 on the next workbench 1. The staff synchronously rotate the rotating rod 25 on the adjusting rotating cylinder 24. When the staff rotate the rotating rod 25 and make the rotating rod 25 move downward, the rotating rod 25 squeezes the three second extrusion blocks 28 to move through the round table surface on its lower side. The three second extrusion blocks 28 slide towards the adjacent first extrusion blocks 27 respectively, and the adjacent second elastic members 29 are compressed and store energy. The staff adjust the elastic force of the second elastic members 29 to adjust the maximum pulling force provided by the wire winding roller 18 to the wire, so as to avoid the wire breaking during stretching due to excessive pulling force.

[0036] After the staff install the wire on multiple such devices, they input parameters such as the hardness and toughness of the wire through the remote control terminal, and set the wire drawing force applied by each such device when stretching the wire. Start the motor 15 and the electric push rod 12 through the remote control terminal. The telescopic end of the electric push rod 12 extends and drives the moving frame 13 to move a certain distance to the right. The moving distance is proportional to the wire drawing force set by the staff. The moving frame 13 drives all the extrusion rings 14 to move to the right together. During the movement of the extrusion ring 14, it squeezes the adjacent group of wedge blocks 11. Since the inclination of the wedge blocks 11 closer to the right is larger (except for the rightmost wedge block 11), the wedge blocks 11 closer to the right move a farther distance towards the wire after being squeezed. During the movement of the wedge block 11, it drives the adjacent sliding frame 8 and the adjacent extrusion roller 10 to move together. The extrusion roller 10 moves and extrudes the wire. All the extrusion rollers 10 form a trapezoid-like cylinder structure with gradually decreasing diameter in the left-to-right direction (except for the rightmost extrusion roller 10, and the moving distance of the rightmost extrusion roller 10 is the same as that of the extrusion roller 10 adjacent to its left side), so as to ensure that a uniform deforming force is applied to the wire, and the degree of decrease in the diameter of the trapezoid-like cylinder is proportional to the extension distance of the telescopic end of the electric push rod 12, which is used to adjust the wire drawing force of each device on the wire, so that this device can stretch wires with different hardnesses and toughnesses without preparing various wire drawing force molds for various wires with different hardnesses and toughnesses.

[0037] When the wire gradually passes through the adjacent extrusion rollers 10 during the wire drawing process, the wire drives the extrusion rollers 10 to rotate. Therefore, the frictional resistance suffered by the wire during the stretching process is less than that when the wire passes through a normal die, enabling more of the pulling force on the wire to act on the force that deforms the wire, thus improving the energy utilization rate of the device.

[0038] When the remote control terminal starts the motor 15, the output shaft of the motor 15 drives the first pulley 16 to rotate synchronously. The first pulley 16 drives the second pulley 19 to rotate through a belt. The second pulley 19 drives the transmission shaft 20 to rotate through a bevel gear set. The transmission shaft 20 drives the large gear 21 and the small gear 22 to rotate at the same speed through multiple gear sets. The rotation direction of the large gear 21 is opposite to that of the small gear 22. The large gear 21 and the small gear 22 drive the adjacent first rotating cylinder 6 and the adjacent second rotating cylinder 7 to rotate respectively. Therefore, the rotation directions of the first rotating cylinder 6 and the second rotating cylinder 7 are opposite. The first rotating cylinder 6 and the second rotating cylinder 7 drive the adjacent sliding brackets 8 and the adjacent extrusion rollers 10 to rotate respectively, causing the trapezoid-like cylinder structure composed of all the extrusion rollers 10 to start rotating. At this time, the extrusion rollers 10 on the same first rotating cylinder 6 and the extrusion rollers 10 on the same second rotating cylinder 7 both form approximate circles during the rotation process to ensure uniform extrusion of the wire. Since the rotation directions of the first rotating cylinder 6 and the adjacent second rotating cylinder 7 are opposite, the torque directions applied by the extrusion rollers 10 on the two to the wire during the rotation process are opposite, thereby promoting the balance of the torque suffered by the wire and preventing the wire from always rotating in one direction, resulting in excessive single-directional torsion on the wire and causing it to break. The rightmost extrusion roller 10 applies a smaller extrusion force and a smaller torque to the wire because it does not apply an additional extrusion deformation force to the wire. It is mainly used to balance the torque applied by the left adjacent extrusion roller 10 to the wire and simultaneously shape the wire after stretching deformation to ensure that the stretched and formed wire always maintains a flat and smooth shape.

[0039] When the remote control terminal starts the motor 15, it gradually increases the rotational speed of the motor 15 in the order of the wire passing through this device successively (for example, the rotational speed of the output shaft of the motor 15 on the second device in the order of the wire passing path is faster than the rotational speed of the output shaft of the motor 15 on the first device in the wire passing path order), so as to ensure that adjacent components always maintain sufficient tension on the adjacent wire. When the output shaft of the motor 15 rotates, it drives the rotating ring 17 to rotate through the first extrusion block 27, the rotating ring 17 drives the wire winding roller 18 to rotate, and the wire winding roller 18 rotates to gradually pull out the wire from all the first rotating cylinders 6 and all the second rotating cylinders 7. At this time, the pulled wire becomes thinner after being extruded. The remote control terminal starts the electric push rods 12 on all the workbenches 1 to extend. When all the electric push rods 12 extend the same distance, the diameters of the trapezoid-like cylinders on multiple different workbenches 1 gradually become smaller in the order of the wire passing through, and the diameters of all the trapezoid-like cylinders are sequentially connected to each other in the order of the wire passing through. All the trapezoid-like cylinders cooperate with each other to gradually stretch the wire into a thin wire.

[0040] When the toughness and hardness of the wire change due to production quality, the resistance to deformation during wire stretching changes synchronously. It becomes more difficult for the wire to pass through all the first rotating cylinders 6 and all the second rotating cylinders 7. Therefore, the tension on the wire increases synchronously. In order to maintain the rotational speed set by the staff, the motor 15 gradually increases the output force. If the wire bears too much tension at this time, it is extremely easy to cause the wire to break during stretching. At this time, when the output shaft of the motor 15 drives the first extrusion block 27 to rotate, the resistance of the wire winding roller 18 increases, resulting in an increase in the extrusion force between the rotating ring 17 and the first extrusion block 27. When the extrusion force is greater than the elastic force of the adjacent second elastic member 29, the first extrusion block 27 contracts into the output shaft of the motor 15, and the second elastic member 29 is further compressed. The first extrusion block 27 gradually disengages from the cooperation with the rotating ring 17. When the first extrusion block 27 disengages from the cooperation with the rotating ring 17, the rotating ring 17 no longer rotates with the first extrusion block 27, and the wire winding roller 18 stops stretching the wire. However, at this time, the output shaft of the motor 15 still provides a force in the rotating direction to the rotating ring 17 through the spring 30, thereby preventing the wire winding roller 18 from rotating in the reverse direction, causing the wire to unwind and curl inside the first rotating cylinder 6 and the second rotating cylinder 7. After the staff observes that the wire winding roller 18 stops rotating, they shut down all the motors 15 through the remote control terminal, check the situation, and appropriately reduce the extension amount of the telescopic end of the electric push rod 12 according to the specific situation, thereby reducing the wire drawing force on the wire. After the adjustment is completed, the staff starts this device again according to the same steps above to stretch the wire.

[0041] After the staff completes the stretching of the wire, they turn off the motor 15 through the remote control terminal and control the telescopic end of the electric push rod 12 to drive the adjacent components to reset.

[0042] Embodiment 2: Existing wire drawing machines are all provided with a cylinder for containing lubricating powder. By fully covering the metal wire with lubricating powder before wire drawing, the frictional resistance suffered by the metal wire during wire drawing is reduced, so that more of the provided force acts on the deformation of the metal wire, thereby improving the energy utilization rate. However, the outer surface of the metal wire is usually a smooth surface. After the metal wire passes through the lubricating powder, due to reasons such as vibration during wire drawing, the lubricating powder on the metal wire is very easy to directly fall off. If the amount of lubricating powder adhered to the metal wire is insufficient, it will cause the frictional resistance suffered by the metal wire during wire drawing to be too large, and the energy utilization efficiency will become low.

[0043] Reference Figure 1 and Figure 2 As shown, it further includes an extrusion mechanism arranged on the upper side of the powder storage box 2. The extrusion mechanism is used to extrude the lubricating powder in the powder storage box 2, so as to make the lubricating powder adhere more firmly to the surface of the metal wire, and thus give full play to the effect of the lubricating powder more fully. The extrusion mechanism includes a sealing cover 31 installed on the upper side of the powder storage box 2. The sealing cover 31 is slidably connected with an extrusion plate 32. A third elastic member 33 is fixedly connected between the extrusion plate 32 and the sealing cover 31. The third elastic member 33 is a tension spring. The third elastic member 33 uses its own pulling force to urge the extrusion plate 32 to extrude the lubricating powder in the powder storage box 2, so that the lubricating powder adheres to the surface of the metal wire under the action of pressure.

[0044] After the staff passes the metal wire through the powder storage box 2 and fills the powder storage box 2 with lubricating powder, then the staff installs the sealing cover 31 on the upper side of the powder storage box 2. The extrusion plate 32 on the sealing cover 31 first extends into the powder storage box 2 during the installation process. When the extrusion plate 32 contacts the lubricating powder, the staff controls the sealing cover 31 to drive the extrusion plate 32 to move vertically downward through the third elastic member 33. The extrusion plate 32 gradually squeezes the lubricating powder downward, so that a large pressure is maintained between the lubricating powder and the metal wire, thereby ensuring that when the metal wire moves out of the powder storage box 2, it adheres more tightly to the surrounding lubricating powder, reducing the probability of the lubricating powder falling off when the metal wire is vibrated during the stretching process. At the same time, the extrusion plate 32 is subjected to the reaction force of the lubricating powder and slows down the downward movement speed. During the downward movement of the sealing cover 31, the third elastic member 33 is gradually stretched and stores energy. When the sealing cover 31 contacts the powder storage box 2, the staff fixes and installs the sealing cover 31 through workpieces such as bolts. Subsequently, during the stretching process of the metal wire, as the lubricating powder in the powder storage box 2 is gradually taken out by the metal wire, the amount of lubricating powder gradually decreases. The third elastic member 33 drives the extrusion plate 32 to move downward through its own elastic force, while maintaining the extrusion force on the lubricating powder. The staff can judge the remaining amount of lubricating powder in the powder storage box 2 by observing the downward movement amount of the extrusion plate 32. When the lubricating powder in the powder storage box 2 is exhausted, the staff fills the powder storage box 2 with lubricating powder in time.

[0045] The above has introduced the present application in detail. Specific examples are used in this text to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A wire drawing machine with adjustable wire drawing force, comprising a workbench (1), a powder box (2) being fixedly connected to the upper side of the workbench (1), characterized in that: The machine also comprises a fixing frame (3), the fixing frame (3) being fixedly connected to the upper side of the workbench (1), the upper side of the fixing frame (3) being fixedly connected to an extrusion head (4) and a uniformly distributed support ring (5), the upper side of the fixing frame (3) being provided with a uniformly distributed first rotating cylinder (6) and a uniformly distributed second rotating cylinder (7), the extrusion head (4) being rotationally connected to the adjacent first rotating cylinder (6), the second rotating cylinder (7) and the first rotating cylinder (6) being rotationally connected to the adjacent support ring (5), the uniformly distributed first rotating cylinder (6) and the uniformly distributed second rotating cylinder (7) being staggeredly distributed, the first rotating cylinder (6) and the second rotating cylinder (7) being arranged in a uniformly distributed manner, The first rotating cylinder (6) and the second rotating cylinder (7) are both slidably connected to a sliding frame (8) uniformly distributed in the circumferential direction; a first elastic member (9) is fixedly connected between the first rotating cylinder (6) and the second rotating cylinder (7) and the adjacent sliding frame (8); the sliding frame (8) is rotatably connected to an extrusion roller (10); all the extrusion rollers (10) are respectively located on the inner side of the adjacent first rotating cylinder (6) and the adjacent second rotating cylinder (7); the sliding frame (8) is fixedly connected to a wedge block (11); all the wedge blocks (11) are respectively located on the outer side of the adjacent first rotating cylinder (6) and the adjacent second rotating cylinder (7); and a driving mechanism for pulling the metal wire to move is arranged on the upper side of the workbench (1).

2. A wire drawing machine with adjustable wire drawing force according to claim 1, characterized in that: The wedge blocks (11) on the same first rotating cylinder (6) form a group, and the wedge blocks (11) on the same second rotating cylinder (7) form a group. Except for the group of wedge blocks (11) farthest from the extrusion head (4), the inclination angles of the wedge blocks (11) of different groups gradually increase from the side close to the extrusion head (4) to the side far away from the extrusion head (4).

3. A wire drawing machine with adjustable wire drawing force according to claim 2, characterized in that: The inclination angle of a group of the wedge blocks (11) farthest from the extrusion head (4) is the same as the inclination angle of an adjacent group of the wedge blocks (11).

4. A wire drawing machine with adjustable wire drawing force according to claim 3, characterized in that: An electric push rod (12) is fixedly connected to one side of the powder box (2) close to the fixed frame (3); a movable frame (13) is fixedly connected to the telescopic end of the electric push rod (12); and evenly distributed extrusion rings (14) are fixedly connected to the movable frame (13); the number of the extrusion rings (14) is the same as the number of groups of the wedge blocks (11); and the extrusion rings (14) are extrusion-matched with all the wedge blocks (11) of adjacent groups.

5. The wire drawing machine with adjustable wire drawing force according to claim 1, characterized in that: The driving mechanism comprises a motor (15), the motor (15) is fixedly connected to the lower part of the workbench (1), the output shaft of the motor (15) is fixedly connected to a first pulley (16), the upper side of the first pulley (16) is rotatably connected to a rotating ring (17), the upper side of the rotating ring (17) is fixedly connected to a winding roller (18), the upper side of the workbench (1) is rotatably connected to a second pulley (19), the second pulley (19) and the first pulley (16) are driven by a belt, and the upper side of the workbench (1) is rotatably connected to a transmission via a bracket. The transmission shaft (20) and the second pulley (19) are driven by a bevel gear set. A large gear (21) is fixedly connected to the outer side of the first rotating drum (6). A small gear (22) is fixedly connected to the outer side of the second rotating drum (7). All the large gears (21) and all the small gears (22) are driven by the transmission shaft (20) by a gear set. The large gears (21) and the small gears (22) have the same rotation speed and opposite directions. A detection component for detecting the force of dragging the wire rope is arranged on the output shaft of the motor (15).

6. A wire drawing machine with adjustable wire drawing force according to claim 5, characterized in that: The diameter of the first pulley (16) is greater than twice the diameter of the second pulley (19).

7. A wire drawing machine with adjustable wire drawing force according to claim 5, characterized in that: A spiral-shaped wire dividing member (23) is arranged on the outer side of the wire winding roller (18).

8. The wire drawing machine with adjustable wire drawing force according to claim 5, characterized in that: The detection component comprises a rotating cylinder (24), the rotating cylinder (24) is rotatably connected to the winding roller (18), the rotating cylinder (24) is fixedly connected to the output shaft of the motor (15), the rotating cylinder (24) is threadedly connected to a rotating rod (25), the output shaft of the motor (15) is slidably connected to a first extrusion block (27) uniformly distributed in the circumferential direction, the first extrusion block (27) is slidably connected to a second extrusion block (28), a second elastic member (29) is fixedly connected between the first extrusion block (27) and the adjacent second extrusion block (28), the first extrusion block (27) is limitedly matched with the rotating ring (17), and the second extrusion block (28) is extrusion-matched with the rotating rod (25).

9. A wire drawing machine with adjustable wire drawing force according to claim 8, characterized in that: The output shaft of the motor (15) is fixedly connected with a spring (30), the spring (30) is in contact with and fits the rotating ring (17), and the initial state of the spring (30) is a power storage state.

10. The wire drawing machine with adjustable wire drawing force according to claim 1, characterized in that: The invention also comprises an extrusion mechanism for squeezing the lubricating powder in the powder box (2), wherein the extrusion mechanism is arranged on the upper side of the powder box (2), and the extrusion mechanism comprises a sealing cover (31), wherein the sealing cover (31) is mounted on the upper side of the powder box (2), and the sealing cover (31) is slidably connected to an extrusion plate (32), and a third elastic member (33) is fixedly connected between the extrusion plate (32) and the sealing cover (31).

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