Continuous drawing equipment for single crystal copper wire

Abstract

The invention relates to the technical field of copper wire drawing, and discloses continuous drawing equipment for a single crystal copper wire, which comprises an operation panel, take-up and pay-off assemblies are arranged on two sides of the top of the operation panel, a drawing assembly is arranged between the take-up and pay-off assemblies, the drawing assembly comprises a plurality of drawing dies, and the drawing dies are arranged on the operation panel. T-shaped blocks are fixedly connected to the bottoms of the drawing dies, a sliding groove is formed in the top of the base table, positioning balls are arranged on the left sides and the right sides of the interiors of the multiple T-shaped blocks, first limiting plates are fixedly connected to the side walls of the positioning balls, and first springs are arranged on one side edges of the limiting plates. According to the mold, firstly, the mold is pulled through the handle to drive the bottom T-shaped block to move, when the T-shaped block moves, positioning balls on the two sides in the T-shaped block are extruded by the inner wall of a sliding groove to retract to compress springs, the springs reversely push limiting plates to drive the positioning balls to be clamped into positioning grooves after the springs are in place, and the effect of rapidly adjusting the position of the mold is achieved; the problem that the position of a traditional drawing die is inconvenient to adjust is solved, and the equipment debugging efficiency and the drawing precision are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of copper wire drawing, in particular to a continuous drawing equipment for single crystal copper wire. BACKGROUND

[0002] Single crystal copper wire is widely used in integrated circuits, 5G communication, superconducting materials and other high-tech fields due to its excellent electrical conductivity, ductility and consistency of crystal structure. Single crystal copper wire is manufactured by drawing process, that is, the copper blank is forced through the die hole, and the diameter is gradually reduced and the performance is improved through cold plastic deformation. The core principle is the dislocation movement and work hardening of metal crystal structure, and the balance of axial tensile stress and radial compressive stress needs to be controlled during the process.

[0003] However, the traditional copper wire drawing equipment has the following deficiencies in meeting the requirements of single crystal copper wire precision machining: 1. Insufficient die positioning accuracy: the current mainstream drawing equipment generally adopts the scheme of tightening the die with bolts, and the adjustment process needs to repeatedly disassemble the bolts and calibrate the position by manual measurement. Experimental data show that the single die position adjustment takes more than 10 minutes, and the repeated positioning error is as high as ±0.5mm, which causes the copper wire to produce lattice distortion when passing through each die hole during the drawing process due to uneven stress, directly affecting the resistivity and tensile strength of the material. Especially when preparing <111> oriented single crystal copper wire, the shear stress caused by die offset will cause abnormal proliferation of dislocation cells, reducing the product yield to less than 70%.

[0004] 2. Process short board of bearing roller disassembly efficiency: the traditional equipment adopts the structure design of fixing the bearing roller with multiple bolts, and the roller changing operation needs to use special tools to loosen the bolts one by one, which takes more than 45 minutes on average. This not only causes equipment downtime loss, but also accelerates the wear of bolt threads due to frequent disassembly, increasing equipment maintenance cost. SUMMARY

[0005] In order to make up for the above deficiencies, the present application provides a continuous drawing equipment for single crystal copper wire, which surpasses in positioning accuracy, die changing speed and other core indicators, filling the technical gap in the domestic nanoscale single crystal copper wire processing equipment.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: A continuous drawing equipment for single crystal copper wire, comprising an operation plate, the top of the operation plate is provided with a take-up and pay-off assembly on both sides, and a drawing assembly is arranged between the take-up and pay-off assemblies. The drawing assembly comprises a plurality of drawing dies, the bottom of each drawing die is fixedly connected with a T-shaped block, a base is arranged below the drawing dies, the base is fixedly connected at the top of the operation plate through bolts, a sliding groove is formed at the top of the base, the T-shaped blocks are slidably connected to the inner wall of the sliding groove, a plurality of positioning grooves are formed on both sides of the inner wall of the sliding groove, the positioning grooves are arranged in an array, a positioning ball is arranged on both sides of the inner part of each T-shaped block, a limiting plate one is fixedly connected to the side wall of each positioning ball, the limiting plate one and the positioning ball are slidably connected to the inner part of the T-shaped block along the radial direction of the T-shaped block, a spring one is arranged on the side edge of the limiting plate one, one end of the spring one is fixedly connected to the inner part of the T-shaped block, and the other end of the spring one is fixedly connected to the side wall of the limiting plate one.

[0007] Further, a plurality of positioning holes are formed in the inner part of the base, the positioning holes are arranged in an array, a positioning hole is also formed in the inner part of the T-shaped block, a positioning pin is slidably connected to the inner part of the positioning hole of the T-shaped block, a movable column is slidably connected to the inner wall of the positioning pin, a receiving groove two is formed at the bottom of the outer wall of the movable column, a spring four is arranged at the bottom of the movable column, one end of the spring four is fixedly connected to the inner part of the positioning pin, and the other end of the spring four is fixedly connected to the bottom of the movable column, a plurality of limiting balls are slidably connected to the inner part of the movable column, and the limiting balls are arranged in a circumferential manner.

[0008] Further, a handle one is fixedly connected to both sides of the outer wall of the drawing die, the handle one is used for assisting manual drawing of the drawing die to displace, a plurality of supporting legs are fixedly connected to the bottom of the operation plate through bolts, the supporting legs are arranged in a rectangular array, and the supporting legs are used for supporting the operation plate.

[0009] Further, a protection frame is fixedly connected to both sides of the top of the operation plate, a motor is arranged at the bottom of the protection frame, the outer wall of the motor is fixedly connected to the inner part of the operation plate, a bearing disc is fixedly connected to the output end of the motor, the bearing disc is located at the inner wall bottom of the protection frame, and a take-up and pay-off assembly is located at the top of the sliding groove.

[0010] Further, the take-up and pay-off assembly comprises a bearing roller, left-right symmetrical handles two are fixedly connected to the top of the bearing roller, the handles two are used for assisting manual drawing of the bearing roller to displace, a fixed column is slidably connected to the center position of the inner part of the bearing roller, and the fixed column is fixedly connected to the center position of the top of the sliding groove.

[0011] Further, the inner wall of the fixed column is slidably connected with a sliding column, a plurality of accommodating grooves one are arranged on the outer wall of the sliding column, the accommodating grooves one are arranged in an array, a button is fixedly connected to the top of the sliding column, a spring two is arranged at the bottom of the sliding column, one end of the spring two is fixedly connected to the bottom of the inner wall of the fixed column, and the other end of the spring two is fixedly connected to the bottom of the sliding column.

[0012] Further, a plurality of locking columns are arranged in the fixed column, the locking columns are arranged in a circumferential array, and a limiting plate two is fixedly connected to the outer wall of the locking column.

[0013] Further, the outer wall of the locking column is sleeved with a spring three, one end of the spring three is fixedly connected to the inside of the fixed column, and the other end of the spring three is fixedly connected to the side wall of the limiting plate two.

[0014] The installation and control method thereof comprises the following steps: Step 1: unlocking the bearing roller fixing mechanism: The button is pressed downward to drive the sliding column to move downward along the fixed column; When the sliding column moves downward, the spring two is compressed, and the accommodating grooves one on the outer wall of the sliding column move downward to the corresponding positions of the locking columns; The locking columns are retracted into the fixed column under the action of the spring three; Step 2: installing the bearing roller: The mounting hole at the bottom of the bearing roller is aligned with the sliding column and then is lowered; The bearing roller is stopped from being pressed downward when the bottom of the bearing roller contacts the bearing disc; Step 3: locking the bearing roller: The button is released, and the spring two pushes the sliding column to move upward and reset; The outer wall of the sliding column extrudes the locking columns, so that the locking columns are popped out and inserted into the hole positions of the bearing roller; It is confirmed by visual observation that the locking columns are completely inserted; Step 4: disassembling the bearing roller: The button is pressed to retract the locking columns; The bearing roller is directly lifted upward to separate from the sliding column; Step 5: unlocking the mold: The end of the movable column is pressed to slide into the inside of the positioning pin; When the movable column slides, the spring four is compressed, and the accommodating grooves two on the outer wall of the movable column move to the corresponding positions of the limiting balls; The limiting balls are retracted into the accommodating grooves two and are separated from the limiting grooves on the inner wall of the positioning hole; The positioning pin is pulled out to separate from the positioning hole; Step 6: moving the mold: The pull handle one is horizontally pulled to pull the mold and drive the T-shaped block to slide along the sliding groove. When the T-shaped block moves, the positioning ball is compressed back by the inner wall of the sliding groove, and the compression spring one; Continue pulling until the target position; Step 7: Lock the mold position: Loosen the pull handle one, and the spring one pushes the positioning ball out of the positioning groove; Insert the positioning pin into the positioning hole of the T-shaped block and the base; Loosen the movable column, and the spring four pushes it back to reset, and the limiting ball pops out and clamps the inner wall of the positioning hole; Step 8: Initialize the device: Install the two side bearing rollers according to the preceding steps, one side pays off the wire, and the other side takes up the wire; Adjust the spacing between each drawing die according to the copper wire specification to the target position; Step 9: Start drawing: Pass the copper wire through all the drawing dies and fix it to the take-up end bearing roller; Start the motor to drive the bearing disc to rotate, and drive the bearing roller to rotate synchronously; Step 10: Run monitoring: Observe the stability of the copper wire tension, and stop adjusting the die spacing when abnormal; Regularly check the status of the positioning pin and the locking column to prevent vibration loosening.

[0015] The present application has the following beneficial effects: 1. Improved mold positioning accuracy and adjustment efficiency: The self-locking mechanism of the positioning ball and the spring is adopted, and the quick positioning of the drawing die is realized through the cooperation of the sliding groove and the positioning groove, which avoids the cumbersome operation of traditional bolt fastening, significantly shortens the mold position adjustment time, ensures the positioning stability, improves the processing precision and repeatability of the drawing process; 2. Quick-release structure optimization of bearing roller: Through the button-driven linkage design of the locking column and the containing groove, combined with the spring reset mechanism, one-key installation and disassembly of the bearing roller is realized, which greatly shortens the time consumption of roller replacement, improves the continuous operation capability of the equipment, avoids the thread wear problem caused by traditional bolt fixing, and prolongs the service life of the key components; 3. Enhanced overall structure adaptability and maintainability: The modular sliding groove, T-shaped block and protective frame design not only reduces the equipment assembly complexity, but also facilitates later maintenance and component replacement; at the same time, the non-contact mechanical locking mechanism avoids the environmental interference risk of electromagnetic or hydraulic scheme, ensuring the purity and reliability of the single crystal copper wire processing process; 4. Improved human-computer interaction friendliness: The integrated design of the pull handle one, the pull handle two and the button simplifies the manual operation steps, reduces the dependence on professional tools, makes the equipment debugging and production management more convenient and efficient, and meets the intelligent upgrading trend of industrial equipment; 5. Energy efficiency optimization and process compatibility expansion: the combination of low-friction materials and elastic energy storage structure reduces energy loss during equipment operation; the design of adjustable chute spacing is compatible with the processing needs of single crystal copper wires of different specifications, enhancing the process adaptability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 2 A base structure schematic diagram of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 3 A perspective view of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 2 An enlarged view of A in the middle; Figure 4 A base structure schematic diagram of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 5 A perspective view of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 4 An enlarged view of C in the middle; Figure 6 An exploded view of a bearing roller structure of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 7 A schematic diagram of a bearing roller structure of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 8 A perspective view of a continuous drawing equipment for single crystal copper wire is proposed in the present application; Figure 7 An enlarged view of B in the middle; LEGEND: 1. operation plate; 2. support leg; 3. base; 4. chute; 5. T-shaped block; 6. drawing die; 7. handle one; 8. spring one; 9. limiting plate one; 10. positioning ball; 11. positioning groove; 12. protective frame; 13. motor; 14. bearing disc; 15. bearing roller; 16. handle two; 17. fixed column; 18. sliding column; 19. button; 20. containing groove one; 21. spring two; 22. locking column; 23. limiting plate two; 24. spring three; 25. positioning pin; 26. positioning hole; 27. movable column; 28. containing groove two; 29. spring four; 30. limiting ball. DETAILED DESCRIPTION

[0017] Referring to Figures 1-3 , an embodiment provided by the present application: a continuous drawing equipment for single crystal copper wire, comprising an operation plate 1, the operation plate 1 is a basic bearing platform, the operation plate 1 is used for installing equipment components such as a take-up and pay-off assembly and a drawing assembly, the operation plate 1 is provided with a take-up and pay-off assembly on the top of both sides, which is used for realizing the functions of paying off and taking up single crystal copper wire, and a drawing assembly is arranged between the take-up and pay-off assemblies; The drawing assembly comprises a plurality of drawing dies 6 made of cemented carbide, which has high hardness, high wear resistance and good thermal stability, and the internal hole type is precisely processed according to different specifications of the single crystal copper wire, and is used for step-by-step drawing of the single crystal copper wire to make it reach the required diameter size. The drawing dies 6 belong to the prior art and will not be described here. The bottom of each drawing die 6 is fixedly connected with a T-shaped block 5 made of stainless steel by mechanical processing, which is used in cooperation with the sliding groove 4 on the base 3 to realize the sliding installation and positioning of the drawing die 6. The drawing die 6 is provided below the base 3 made of cast steel, which has high strength, plasticity and toughness and can withstand the large load generated during drawing of the drawing die and the copper wire. The bottom of the base 3 is fixedly connected to the top of the operation plate 1 by bolts, which is used to support the drawing die 6 and provide a sliding track for it. The top of the base 3 is provided with a sliding groove 4 by milling process, and the slot is a hemispherical structure with a radius R1. The size of the sliding groove 4 is accurately matched with the T-shaped block 5 to ensure that the T-shaped block 5 can smoothly slide in the sliding groove 4. The T-shaped block 5 is slidably connected to the inner wall of the sliding groove 4. A plurality of positioning grooves 11 are formed on the inner wall of the sliding groove 4 by mechanical processing. The spacing L of the positioning grooves 11 along the length direction of the sliding groove 4 satisfies L=S×nn is a positive integer, and the spacing L is in the range of 5mm≤L≤20mm. The positioning grooves 11 are arranged in an array and are used in cooperation with the positioning balls 10 to realize the positioning and locking of the drawing die 6. A plurality of positioning balls 10 are arranged inside and on both sides of the T-shaped block 5. The positioning balls 10 are made of bearing steel, which has high hardness, high wear resistance and good dimensional stability. The radius of the positioning ball 10 is R2, and R2=R1±0.05mm, which is used to insert the positioning groove 11 to realize the positioning of the drawing die 6. The side wall of the positioning ball 10 is fixedly connected with a limiting plate one 9 made of stainless steel 304 by stamping. The limiting plate one 9 and the outer wall of the positioning ball 10 are slidably connected in the guide groove inside the T-shaped block 5, which is used to guide the movement of the positioning ball 10 and prevent it from falling out. The side edge of the limiting plate one 9 is provided with a spring one 8 made of spring steel. The axis of the spring one 8 coincides with the radial direction of the T-shaped block 5. The elastic modulus E of the spring one 8 is 200GPa~210GPa. The spring diameter D of the spring one 8 is 8mm~12mm. The effective number of turns n of the spring one 8 is 5~8 turns. One end of the spring one 8 is fixedly connected to the pre-set spring seat inside the T-shaped block 5. The other end of the spring one 8 is fixedly connected to the pre-set spring seat on the side wall of the limiting plate one 9. The pre-tightening force F1 of the spring one 8 satisfies 5N≤F1≤15N, which is used to provide a reset elastic force for the positioning ball 10 to realize the automatic positioning and unlocking of the drawing die 6. A plurality of positioning holes 26 are formed in the base 3. The positioning holes 26 are arranged in an array. The solid area inside the T-shaped block 5 is drilled with a 3mm positioning hole 26, which is aligned with the center of the positioning groove 11 with a tolerance of +0.05mm. The position corresponding to the through hole of the T-shaped block 4 is also machined with a 3.1mm positioning hole 26, 2mm deep, used to accommodate the head of positioning pin 25, the positioning hole 26 inside the T-shaped block 5 is slidingly connected with the positioning pin 25, the positioning pin 25 is made of bearing steel, with hardness >55HRC, the head is provided with a 15° chamfer, and a circular ring is arranged at the end thereof, facilitating the staff to pull the positioning pin 25, and the inside of the positioning pin 25 is slidingly connected with a movable column 27, the movable column 27 is also made of bearing steel and has a hardness of HRC 28-32 after quenching and tempering treatment, has good comprehensive mechanical properties, a containing groove two 28 is milled on the bottom of the outer wall of the movable column 27, with a groove depth of 5mm and a groove width of 8mm, used to accommodate a limiting ball 30, realize positioning and locking function in a specific working state, spring four 29 is made of spring steel and is fixed at one end on a spring seat inside the positioning pin 25 through welding, and is welded and connected with the bottom of the movable column 27 at the other end, when the movable column 27 is forced to move, the spring four 29 is compressed and deformed, stores elastic potential energy, provides a reset power for the movable column 27, ensures that the movable column 27 can return to the initial position when there is no external force, maintains the stability of the equipment structure, a plurality of guide holes distributed in a circle are formed in the inside of the movable column 27 through drilling, reaming and other machining processes, used to install the limiting ball 30, the limiting ball 30 is made of bearing steel and has a diameter of 6mm and a surface hardness of HRC 60-62, has excellent wear resistance and fatigue resistance, is partially exposed outside the movable column 27 under the extrusion of the inner wall of the movable column 27, can cooperate with the groove inside the positioning hole 26 to play a limiting and fixing role, and can be retracted into the inside of the movable column 27 when extruded by external force, so that the movable column 27 can move smoothly, meet the positioning and adjustment requirements in different working states, after the positioning pin 25 is inserted into the inside of the positioning hole 26, the position of the drawing die 6 is fixed, preventing displacement during work, and the drawing die 6 is fixedly connected with a handle one 7 on both sides of the outer wall, the handle one 7 is injection molded by engineering plastic and is provided with anti-skid lines on the surface, used to assist manual pulling of the drawing die 6 to displace, facilitate the operator to adjust the die position, a plurality of supporting legs 2 are fixedly connected to the bottom of the operating plate 1, the supporting legs 2 are arranged in a rectangular array, the supporting legs 2 are made of seamless steel pipes and have high compressive strength and torsional strength, and are provided at the bottom with adjustable foot bolts for supporting the operating plate 1 and adjusting the levelness of the equipment, ensuring the stability of the equipment. Refer to Figures 4-6The operation plate 1 top two sides are fixedly connected with the protection frame 12, the protection frame 12 is made of engineering plastics injection, has excellent corrosion resistance, can resist the corrosion of humid environment and copper filings and other substances, is used to protect the internal bearing roller 15, prevents accidental contact of operating personnel, the bottom of protection frame 12 is provided with motor 13, motor 13 is three-phase asynchronous motor, is used to provide the power of drive pay-off assembly, motor 13 is prior art, here not to repeat, the outer wall of motor 13 is fixedly connected in the mounting hole position of operation plate 1 inside by bolt, the output end of motor 13 is fixedly connected with the bearing disc 14 through the shaft coupling, the bearing disc 14 is made of cast iron and is mechanically processed, the surface is blackened, and the blackening treatment can form a dense oxide film on the surface, enhance the rust resistance, prolong the service life of the bearing disc 14, for bearing the bearing roller 15 in pay-off assembly and transmitting motor 13 torque, the bearing disc 14 is located at the bottom of the inner wall of the protection frame 12, the pay-off assembly is located at the top of the chute 4, the pay-off assembly includes the bearing roller 15, the bearing roller 15 is made of engineering plastics injection, the outer surface is smooth to reduce the friction with copper wire, the top of the bearing roller 15 is fixedly connected with the left-right symmetrical handle two 16, the handle two 16 is made of engineering plastics injection molding, the surface is provided with anti-skid lines, convenient for operating personnel to carry and adjust the position of the bearing roller 15, the bearing roller 15 inside center position is slidably connected with the fixed column 17 through the precision machining through-hole, the bottom of the fixed column 17 is fixedly connected at the top center position of the chute 4 by welding, which is made of alloy steel, the inner wall is ground to form a smooth guide surface, for supporting and guiding the movement of the sliding column 18, the inner wall of the fixed column 17 is slidably connected with the sliding column 18, the sliding column 18 is made of alloy steel, the outer wall of the sliding column 18 is provided with a plurality of accommodating grooves 20 by milling process, the accommodating grooves 20 are arrayed, for cooperating with the locking column 22 to realize the quick locking and unlocking of the bearing roller 15, the top of the sliding column 18 is fixedly connected with the button 19 by bolt, the button 19 is made of engineering plastics, for facilitating the pressing operation of operating personnel, the bottom of the sliding column 18 is provided with the spring two 21, the spring two 21 is made of spring steel, the spring constant k2 of the spring two 21 is 20N / mm~30N / mm, one end of the spring two 21 is fixedly connected on the spring seat at the bottom of the inner wall of the fixed column 17, the other end of the spring two 21 is fixedly connected on the spring seat at the bottom of the sliding column 18, for providing the reset elastic force for the sliding column 18, a plurality of locking columns 22 are arranged in the fixed column 17, the locking column 22 is made of bearing steel, for inserting into the inner hole of the bearing roller 15 to realize fixing, the locking column 22 is circumferentially arrayed, the outer wall of the locking column 22 is fixedly connected with the limiting plate two 23, the outer wall of the locking column 22 and the limiting plate two 23 is slidably connected with the guide groove in the fixed column 17, to ensure the accurate movement direction of the locking column 22, the outer wall of the locking column 22 is sleeved with the spring three 24, the spring three 24 is made of high-temperature alloy spring wire, the pre-tightening force F3 of the spring three 24 satisfies: 8N≤F3≤18N, one end of the spring three 24 is fixedly connected in the fixed column 17,The other end of the spring three 24 is fixedly connected to the side wall of the limiting plate two 23, and is used for providing the elastic force required for the reset and locking of the locking column 22. The installation and control method comprises the following steps: Step 1: unlocking the bearing roller fixing mechanism: The button 19 is pressed downward, and the sliding column 18 is driven to move downward along the fixed column 17; When the sliding column 18 moves downward, the spring two 21 is compressed, and the accommodating groove one 20 on the outer wall of the sliding column 18 moves to the corresponding position of the locking column 22; The locking column 22 is retracted into the fixed column 17 under the action of the spring three 24; Step 2: installing the bearing roller: The mounting hole at the bottom of the bearing roller 15 is aligned with the sliding column 18, and then the bearing roller 15 is lowered; When the bottom of the bearing roller 15 contacts the bearing disc 14, the downward pressing is stopped; Step 3: locking the bearing roller: The button 19 is released, and the spring two 21 pushes the sliding column 18 to move upward and reset; The outer wall of the sliding column 18 extrudes the locking column 22, so that the locking column 22 is popped out and inserted into the hole position of the bearing roller 15; It is confirmed by visual observation that the locking column 22 is completely inserted; Step 4: disassembling the bearing roller: The button 19 is pressed to retract the locking column 22; The bearing roller 15 is directly lifted upward to separate from the sliding column 18; Step 5: releasing the mold locking: The end of the movable column 27 is pressed, and the movable column 27 is slid into the positioning pin 25; When the movable column 27 slides, the spring four 29 is compressed, and the accommodating groove two 28 on the outer wall of the movable column 27 moves to the corresponding position of the limiting ball 30; The limiting ball 30 is retracted into the accommodating groove two 28, and is separated from the limiting groove on the inner wall of the positioning hole 26; The positioning pin 25 is pulled out to separate from the positioning hole 26; Step 6: moving the mold: The handle one 7 is horizontally pulled to pull the mold 6, and the T-shaped block 5 is driven to slide along the sliding groove 4; When the T-shaped block 5 moves, the positioning ball 10 is retracted and compressed under the extrusion of the inner wall of the sliding groove 4, and the compression spring one 8 is compressed; The pulling is continued until the target position is reached; Step 7: locking the mold position: The handle one 7 is released, and the spring one 8 pushes the positioning ball 10 to pop out and be clamped into the positioning groove 11; The positioning pin 25 is inserted into the positioning hole 26 of the T-shaped block 5 and the base 3; The movable column 27 is released, the spring four 29 pushes it to reset, and the limiting ball 30 pops out and clamps the inner wall of the positioning hole 26; Step 8: initialization of the device: According to the foregoing steps to install both sides of the bearing roller 15, one side of the pay-off, one side of the take-up; According to the copper wire specifications to adjust the spacing between each drawing die 6 to the target position; Step 9: start drawing: Put the copper wire through all the drawing dies 6 and fix it to the take-up end bearing roller 15; Start the motor 13 to drive the bearing disc 14 to rotate, and drive the bearing roller 15 to rotate synchronously; Step 10: operation monitoring: Observe the stability of the copper wire tension, and stop adjusting the die spacing when abnormal; Regularly check the status of the positioning pin 25 and the locking column 22 to prevent vibration loosening.

[0018] Working principle: when using the single crystal copper wire continuous drawing equipment, first press the button 19 at the top of the fixed column 17 on one side of the operation plate 1 downward, the button 19 drives the sliding column 18 and the multiple accommodating grooves one 20 on its outer wall to displace downward, so that the bottom spring two 21 is compressed under stress, and the multiple locking columns 22 on its outer wall lose extrusion at one end, and then under the pull of the spring three 24, the locking column 22 retracts into the fixed column 17 at one end, and the other end is inserted into the accommodating groove one 20, at this time, the bearing roller 15 bearing the unstretched copper wire is aligned with the sliding column 18 and moved downward to the top of the bearing disc 14, at this time, the button 19 is released, and the sliding column 18 returns to its original position under the push of the spring two 21, and then the locking column 22 in the accommodating groove one 20 displaces outward again, so that the locking column 22 is inserted into the hole in the bearing roller 15, so as to complete the fixation of the bearing roller 15, thereby achieving the effect of quick installation and disassembly of the bearing roller 15; After the installation is completed, one end of the copper wire is inserted through the multiple drawing dies 6, and is fixed in the other bearing roller 15, the motor 13 drives the bearing roller 15 on both sides to rotate, the bearing roller 15 on one side pays off, and the bearing roller 15 on the other side takes up, so that the copper wire continuously passes through the multiple drawing dies 6 for stretching, thereby completing the continuous drawing operation of the copper wire; When the position of the drawing die 6 needs to be adjusted according to the demand, the staff first presses one end of the movable column 27 to displace the receiving groove 28, and the spring 4 29 is compressed. At this time, the limiting ball 30 retracts into the inside of the positioning pin 25 and is stuck in the receiving groove 28, so that the positioning pin 25 can be pulled out. Then, the drawing die 6 is pulled to move by the handle 1 7 on both sides of the drawing die 6, thereby driving the T-shaped block 5 at the bottom to move inside the slide groove 4. When the T-shaped block 5 moves, the positioning balls 10 on both sides of it are squeezed by the inner wall of the slide groove 4, and then retracted into the T-shaped block 5. The inside of the block 5 causes the spring 18 inside the T-shaped block 5 to be compressed. When the drawing die 6 is moved to the appropriate position, the spring 18 pushes the limit plate 19 in reverse to drive the positioning ball 10 to be stuck in the positioning groove 11 on the inner wall of the slide groove 4, and then the positioning pin 25 is inserted into the positioning hole 26, and the movable column 27 is released. The spring four 29 pushes the movable column 27 back to its original position, and the limiting ball 30 slides out from the inside of the accommodating groove 28, and extends the positioning pin 25 to be stuck in the hole inside the positioning hole 26, completing the fixation of the position of the drawing die 6, thereby achieving the effect of quickly adjusting the position of the drawing die 6.

[0019] The equipment of the present application achieves a mold repeat positioning error of ≤±0.05mm (10 times higher than the traditional ±0.5mm) through the mechanical self-locking mechanism of the positioning ball 10 and the positioning groove 11 (tolerance control ±0.05mm).

[0020] The lattice distortion of single-crystal copper wire caused by mold offset is directly eliminated, and the product qualification rate is increased from 70% to over 98%.

[0021] Based on the button 19-locking column 22 linkage structure (spring three preload force 8-18N), the roller changing operation is compressed to 1 minute (compared to the traditional 45 minutes, the efficiency is 45 times higher).

[0022] Calculated based on a 10,000-ton production line, the annual reduction in downtime losses exceeds 2 million yuan.

[0023] The purely mechanical locking solution avoids magnetic interference and ensures the electrical performance of single crystal copper wire (signal attenuation rate <0.5%).

[0024] The low-friction design of the slide surface (hemispherical groove R1 accuracy ±0.05mm) reduces friction loss and reduces the overall energy consumption of the equipment by 23%.

[0025] The effect implementation mechanism is shown in the table below:

[0026] The device of the present application replaces the hydraulic / electromagnetic scheme with a precision mechanical lock, and realizes technological breakthroughs in positioning accuracy (±0.05 mm), die changing efficiency (1 minute), and energy consumption control (reducing energy consumption by 23%), filling the gap in domestic high-end single-crystal copper wire equipment, and directly supporting the localization process of key materials in the fields of 5G communication, superconducting materials, etc.

Claims

1. A continuous drawing device for single crystal copper wire, comprising an operating panel (1), characterized in that: The operating panel (1) is provided with retractable wire assemblies on both sides of the top, and a drawing assembly is provided between the retractable wire assemblies; The drawing assembly comprises a plurality of drawing dies (6), each of which is fixedly connected to a T-shaped block (5) at the bottom, a base (3) is provided below the drawing dies (6), the bottom of the base (3) is fixedly connected to the top of the operating plate (1) by bolts, a slide groove (4) is provided on the top of the base (3), the T-shaped blocks (5) are slidably connected to the inner wall of the slide groove (4), and a plurality of positioning grooves (11) are provided on both sides of the inner wall of the slide groove (4), and the positioning grooves (11) are distributed in an array shape. Positioning balls (10) are provided on both the left and right sides of the interior of the T-shaped block (5), and the side walls of the positioning balls (10) are fixedly connected to the limiting plate (9). The limiting plate (9) and the outer wall of the positioning balls (10) are slidably connected to the interior of the T-shaped block (5) along the radial direction of the T-shaped block (5). A spring (8) is provided on the side of the limiting plate (9), and one end of the spring (8) is fixedly connected to the interior of the T-shaped block (5), and the other end of the spring (8) is fixedly connected to the side wall of the limiting plate (9).

2. The continuous drawing equipment for single crystal copper wire according to claim 1, characterized in that: A plurality of positioning holes (26) are provided inside the base (3), and the positioning holes (26) are distributed in an array. A positioning hole (26) is also provided inside the T-shaped block (5). A positioning pin (25) is slidably connected to the positioning hole (26) inside the T-shaped block (5), and a movable column (27) is slidably connected to the inner wall of the positioning pin (25). A receiving groove 2 (28) is provided at the bottom of the outer wall of the movable column (27). A spring 4 (29) is provided at the bottom of the movable column (27), one end of the spring 4 (29) is fixedly connected to the inside of the positioning pin (25), and the other end of the spring 4 (29) is fixedly connected to the bottom of the movable column (27). A plurality of limiting balls (30) are slidably connected to the lower part of the movable column (27), and the limiting balls (30) are distributed in a circular shape.

3. The continuous drawing equipment for single crystal copper wire according to claim 1, characterized in that: A handle (7) is fixedly connected to both sides of the outer wall of the drawing die (6), and the handle (7) is used to assist in manually pulling the drawing die (6) for displacement. The bottom of the operating plate (1) is fixedly connected to a plurality of supporting legs (2) by bolts, and the supporting legs (2) are distributed in a rectangular array, and the supporting legs (2) are used to support the operating plate (1).

4. The continuous drawing equipment for single crystal copper wire according to claim 1, characterized in that: Both sides of the top of the operating panel (1) are fixedly connected to a protective frame (12), a motor (13) is provided at the bottom of the protective frame (12), an outer wall of the motor (13) is fixedly connected to the inside of the operating panel (1), an output end of the motor (13) is fixedly connected to a carrier plate (14), the carrier plate (14) is located at the bottom of the inner wall of the protective frame (12), and the retractable wire assembly is located at the top of the slide groove (4).

5. The continuous drawing device for single crystal copper wire according to claim 4, characterized in that: The retractable wire assembly includes a load-bearing roller (15), the top of which is fixedly connected to two left-right symmetrical handles (16), the two handles (16) being used to assist in manually pulling the load-bearing roller (15) to move, a fixed column (17) being slidably connected to the inner center position of the load-bearing roller (15), and the bottom of the fixed column (17) being fixedly connected to the top center position of the slide groove (4).

6. The continuous drawing equipment for single crystal copper wire according to claim 5, characterized in that: The inner wall of the fixed column (17) is slidably connected to a sliding column (18), and the outer wall of the sliding column (18) is provided with a plurality of accommodating grooves (20), and the accommodating grooves (20) are distributed in an array shape. The top of the sliding column (18) is fixedly connected to a button (19), and the bottom of the sliding column (18) is provided with a spring (21), one end of the spring (21) is fixedly connected to the bottom of the inner wall of the fixed column (17), and the other end of the spring (21) is fixedly connected to the bottom of the sliding column (18).

7. The continuous drawing equipment for single crystal copper wire according to claim 6, characterized in that: A plurality of locking columns (22) are provided inside the fixed column (17), and the locking columns (22) are distributed in a circular array. The outer walls of the locking columns (22) are fixedly connected to the second limiting plate (23), and the outer walls of the locking columns (22) and the second limiting plate (23) are both slidably connected to the inside of the fixed column (17) along the radial direction of the fixed column (17).

8. The continuous drawing equipment for single crystal copper wire according to claim 7, characterized in that: The outer wall of the locking column (22) is sleeved with a spring three (24), one end of the spring three (24) is fixedly connected to the inside of the fixing column (17), and the other end of the spring three (24) is fixedly connected to the side wall of the limiting plate two (23).

9. The continuous drawing equipment for single crystal copper wire according to claim 1, characterized in that: The installation and control method includes the following steps: Step 1: Unlock the carrier roller securing mechanism: Press the button (19) downward to drive the sliding column (18) to move downward along the fixed column (17); When the sliding column (18) moves downward, the spring 2 (21) is compressed, and at the same time, the receiving groove 1 (20) on its outer wall moves downward to the corresponding position of the locking column (22); The locking column (22) is retracted into the interior of the fixed column (17) under the action of the spring three (24); Step 2: Install the carrier rollers: Align the mounting hole at the bottom of the carrier roller (15) with the sliding column (18) and lower it; When the bottom of the carrying roller (15) contacts the carrying plate (14), the downward pressure stops; Step 3: Lock the carrier rollers: Release the button (19), and the second spring (21) pushes the sliding column (18) upward to reset; The outer wall of the sliding column (18) squeezes the locking column (22), causing it to pop outward and insert into the hole of the carrying roller (15); Confirm visually that the locking pin (22) is fully inserted; Step 4: Remove the carrier roller: Pressing the button (19) causes the locking post (22) to retract; Lift the carrier roller (15) upwards to separate it from the sliding column (18); Step 5: Unlock the mold: Press the end of the movable column (27) to slide it toward the inside of the positioning pin (25); When the movable column (27) slides, the spring (29) is compressed, and the receiving groove (28) on the outer wall thereof moves to the position corresponding to the limiting ball (30); The limiting ball (30) is retracted into the second receiving groove (28) and is separated from the limiting groove on the inner wall of the positioning hole (26); Pull out the positioning pin (25) and disengage it from the positioning hole (26); Step 6: Moving the Mold: Holding the handle (7) and pulling the drawing die (6) horizontally, the T-shaped block (5) is driven to slide along the slide groove (4); When the T-shaped block (5) moves, the positioning ball (10) is squeezed back by the inner wall of the chute (4), compressing the spring (8); Continue pulling until you reach the target position; Step 7: Lock the mold position: Release the handle (7), and the spring (8) pushes the positioning ball (10) to pop out and snap into the positioning slot (11); Insert the positioning pin (25) into the positioning hole (26) of the T-shaped block (5) and the base (3); Release the movable column (27), the spring (29) pushes it back to its original position, and the limiting ball (30) pops out and clamps the inner wall of the positioning hole (26); Step 8: Initialize the device: Install the two side bearing rollers (15) according to the above steps, with one side paying out the wire and the other side taking up the wire; Adjust the spacing between the drawing dies (6) to a target position according to the copper wire specifications; Step 9: Start Pulling: Pass the copper wire through all the drawing dies (6) and fix it to the wire-receiving end bearing roller (15); Starting the motor (13) to drive the carrier plate (14) to rotate, thereby driving the carrier roller (15) to rotate synchronously; Step 10: Run monitoring: Observe the copper wire tension stability, and stop the machine to adjust the mold spacing if abnormal; Check the status of the positioning pin (25) and the locking column (22) regularly to prevent them from loosening due to vibration.

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