A continuous oxygen-free copper rod rolling mill

Abstract

The application belongs to the technical field of oxygen-free copper rod rolling, and discloses an oxygen-free copper rod continuous rolling mill, which comprises a winding sleeve, a winding assembly, a diameter expansion assembly and a reciprocating extrusion assembly. The winding assembly comprises a core winding shaft, a cylinder cover, a core winding drum and a wire flinging pipe. The cylinder cover is sleeved and fixedly connected to the outer circumferential wall of the end of the core winding shaft. The core winding drum is rotationally connected to the bottom of the cylinder cover. The wire flinging pipe is fixedly connected to the outer wall of the core winding shaft. In the application, the plurality of diameter expansion push plates distributed in the circumferential direction of the diameter expansion assembly constitute a telescopic winding drum wall. The ball at the end of the connecting rod is linked with the reciprocating extrusion assembly to realize the radial synchronous reciprocating movement. This structure can realize the real-time and accurate adjustment of the winding inner diameter, ensures that the oxygen-free copper rod is always wound above the critical bending radius, avoids the plastic deformation caused by excessive bending, and avoids the formation of dead bending or micro-cracks, which can cause the decrease of the local tensile strength of the oxygen-free copper rod.

Description

Technical Field

[0001] This invention relates to the field of oxygen-free copper rod rolling technology, and more specifically, to an oxygen-free copper rod continuous rolling mill. Background Technology

[0002] Oxygen-free copper rods contain no oxygen or any deoxidizer residues, but they still contain trace amounts of oxygen and some impurities. According to standards, the oxygen content should not exceed 0.02%, the total impurity content should not exceed 0.05%, and the copper purity should be greater than 99.95%.

[0003] Oxygen-free copper rod continuous rolling mills process copper raw materials into oxygen-free copper rods of specific specifications through continuous rolling technology, and are widely used in high-end manufacturing fields such as wire and cable, and electronic components. The oxygen-free copper rod continuous rolling mill includes a heating system, the mill body, and a take-up system. Among these, the oxygen-free copper rod take-up system, as a critical terminal link in continuous rolling, directly affects the continuous operation efficiency of the production line and plays a decisive role in the surface quality, dimensional accuracy, and subsequent processing performance of the oxygen-free copper rods.

[0004] The winding system mainly uses a winding machine to wind up oxygen-free copper rods. In the existing oxygen-free copper rod winding machine, the oxygen-free copper rod is introduced into the winding machine through a guide wheel assembly. The copper tube is wound onto the top of the tray through the wire-spinning tube on the winding machine. However, during the winding process, it is difficult to control the inner diameter of the copper tube coil. This can lead to excessive bending and plastic deformation during the winding process, resulting in dead bends or micro-cracks, which in turn reduces the local tensile strength. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes an oxygen-free copper rod continuous rolling mill, which uses multiple circumferentially distributed expansion push plates in the expansion assembly to form a telescopic roll wall, so that the inner diameter of the winding can be adjusted in real time and precisely, ensuring that the oxygen-free copper rod is always wound above the critical bending radius, avoiding plastic deformation caused by excessive bending, and forming dead bends or microcracks.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an oxygen-free copper rod continuous rolling mill, comprising a take-up sleeve, a winding assembly, a diameter expansion assembly, and a reciprocating extrusion assembly;

[0007] The winding assembly includes a core spool, a cap, a core drum, and a spindle. The cap is fitted and fixedly connected to the outer peripheral wall of the end of the core spool. The core drum is rotatably connected to the bottom of the cap. The spindle is fixedly connected to the outer wall of the core spool.

[0008] The diameter expansion assembly includes multiple diameter expansion push plates spaced apart circumferentially along the core drum, two connecting rods fixedly connected to the outer wall of each diameter expansion push plate, a first spring sleeved on the outer wall of each connecting rod, a limiting sleeve fixedly connected to the outer wall of each connecting rod, and a first ball embedded in the inner end of each connecting rod. The outer end of each connecting rod penetrates the drum wall of the core drum and is slidably connected thereto. The limiting sleeve is located between the corresponding diameter expansion push plate and the outer wall of the core drum, used to limit the distance the connecting rod slides into the core drum. One end of the first spring is fixedly connected to the diameter expansion push plate, and the other end of the first spring is fixedly connected to the outer wall of the core drum.

[0009] The reciprocating extrusion assembly is disposed inside the core drum and installed at the bottom of the core drum shaft. The reciprocating extrusion assembly is used to periodically extrude the first ball bearings at the inner ends of each connecting rod to drive each of the expansion push plates to move synchronously back and forth along the radial direction of the core drum through the corresponding connecting rod.

[0010] Preferably, the reciprocating extrusion assembly includes two reciprocating lead screws with their ends fixed to each other, two reciprocating sliding sleeves, and two axial pressure blocks;

[0011] The top of the reciprocating screw located at the top is fixedly connected to the core drum shaft, and the bottom of the reciprocating screw located at the bottom is rotatably connected to the inner wall of the core drum.

[0012] The reciprocating sleeves are respectively fitted onto the outer peripheral wall of the corresponding reciprocating lead screw and are slidably connected to the reciprocating groove on the reciprocating lead screw;

[0013] Two axial pressure blocks are respectively fixedly connected to the outer peripheral wall of the corresponding reciprocating sleeve. The outer peripheral wall of each axial pressure block is formed with an outer conical surface. The outer conical surface is used to radially press the first ball at the inner end of the corresponding connecting rod when the reciprocating sleeve moves axially back and forth with the reciprocating screw.

[0014] Preferably, the reciprocating extrusion assembly further includes two fixing blocks. The ends of the fixing blocks are respectively fixedly connected to the inner wall of the core drum. The bottom of each fixing block is fixedly connected to a guide rod. The outer wall of each guide rod is slidably connected to two sliders. The two sliders are respectively fixedly connected to the corresponding axial pressure block.

[0015] Preferably, a mounting plate is provided below the core roll, and two first sliding rods are fixedly connected to the top of the mounting plate. The top of the first sliding rods extends into the core roll and is slidably connected thereto. A second spring is sleeved on the outer wall of each of the first sliding rods. One end of the second spring is fixedly connected to the core roll, and the other end of the second spring is fixedly connected to the mounting plate.

[0016] Preferably, the bottom of the mounting plate is fixedly connected with a claw, and a slot is provided between two adjacent claw parts of the claw, and a guide curved surface is provided at the claw end of the claw.

[0017] Preferably, a first cylinder is fixedly connected to the top of the cylinder cover, the output end of the first cylinder passes through the core reel and extends to its outer side, a sliding hole is opened on the top of the cylinder cover, a support plate is fixedly connected to the output end of the first cylinder, the bottom of the support plate is slidably connected to the inner wall of the sliding hole, the outer wall of the support plate is fixedly connected to the outer wall of the casting tube, and the casting tube is a thin-walled metal corrugated pipe.

[0018] Preferably, the inner wall of the take-up sleeve is fixedly connected to multiple brackets, the top of each bracket is fixedly connected to a second cylinder, the inner wall of each bracket is fixedly connected to a second slide rod, the outer wall of the second slide rod is slidably connected to a connecting arm, the connecting arm passes through the bracket and is slidably connected to it, and the top of the connecting arm is fixedly connected to the output end of the second cylinder.

[0019] Preferably, the winding sleeve is provided with a lifting ring, the outer wall of the lifting ring is fixedly connected to the connecting arm, the inner wall of the lifting ring is slidably connected with multiple limiting rods, the outer wall of the lifting ring is fixedly connected with multiple machine bases, the outer wall of each machine base is fixedly connected with a third cylinder, the output end of the third cylinder is fixedly connected to the limiting rod, the inner end of each limiting rod is fixedly connected with a locking block, the arc end of the locking block is provided with an arc groove, and the inner wall of each arc groove is embedded with a rotatable second ball.

[0020] Preferably, a roller conveyor is provided below the take-up sleeve. The roller conveyor is used for horizontally conveying the pallet assembly. The pallet assembly includes a bracket, a support plate fixedly connected to the top of the bracket, a locking rod fixedly connected to the inner wall of the support plate, and an anti-shrink sleeve fixedly connected to the top of the support plate. An annular groove is formed on the outer wall of the support plate. The locking block engages with the inner wall of the annular groove. The second ball is in rolling connection with the inner wall of the annular groove. When the claw descends, the guide surface on its claw contacts the locking rod, so that the locking rod engages with the locking groove. The pallet assembly is used to increase the resistance when the core roll rotates with the cover, so that the core roll remains stationary.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The expansion assembly consists of multiple circumferentially distributed expansion push plates forming a telescopic drum wall. Through the ball bearings at the end of the connecting rod, it is linked with the reciprocating extrusion assembly to achieve radial synchronous reciprocating movement. This design allows the winding inner diameter to be adjusted precisely in real time, ensuring that the oxygen-free copper rod is always wound above the critical bending radius, avoiding plastic deformation caused by excessive bending, which can lead to dead bends or microcracks. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the mounting structure of the bracket of the present invention;

[0027] Figure 4 This is a schematic diagram of the installation structure of the axial pressure block of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation structure of the diameter-expanding pusher plate of the present invention;

[0029] Figure 6 This is a schematic diagram of the overall structure of the chuck claw of the present invention;

[0030] Figure 7 This is a schematic diagram of the installation structure of the reciprocating sliding sleeve of the present invention;

[0031] Figure 8 This is a schematic diagram of the mounting structure of the clamp rod of the present invention;

[0032] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.

[0033] Explanation of the numbers in the diagram: 1. Rewind sleeve; 2. Roller conveyor; 3. Core roll; 4. Drum cover; 5. Core roll; 6. Expanding diameter push plate; 7. Connecting rod; 8. First spring; 9. Limiting sleeve; 10. First ball bearing; 11. Reciprocating screw; 12. Axial pressure block; 13. Reciprocating sliding sleeve; 14. Mounting plate; 15. First sliding rod; 16. Fixing block; 17. Guide rod; 18. Slider; 19. Claw; 20. Slot; 21. Guide. 21. Curved surface; 22. Second spring; 23. First cylinder; 24. Sliding hole; 25. Support plate; 26. Bracket; 27. Second slide rod; 28. Second cylinder; 29. ​​Connecting arm; 30. Lifting ring; 31. Limiting rod; 32. Base; 33. Third cylinder; 34. Locking block; 35. Arc groove; 36. Second ball bearing; 37. Support plate; 38. Annular groove; 39. Locking rod; 40. Anti-shrink sleeve; 41. Insert bracket; 42. Cable guide tube. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] like Figures 1-5 As shown, an oxygen-free copper rod continuous rolling mill includes a take-up sleeve 1, a winding assembly, an expansion assembly, and a reciprocating extrusion assembly;

[0036] The winding assembly includes a core spool 3, a cap 4, a core drum 5, and a spinneret 42. The cap 4 is fitted and fixedly connected to the outer peripheral wall of the end of the core spool 3. The core drum 5 is rotatably connected to the bottom of the cap 4. The spinneret 42 is fixedly connected to the outer wall of the core spool 3.

[0037] The diameter expansion assembly includes multiple diameter expansion push plates 6 spaced apart circumferentially along the core drum 5, two connecting rods 7 fixedly connected to the outer wall of each diameter expansion push plate 6, a first spring 8 sleeved on the outer wall of each connecting rod 7, a limiting sleeve 9 fixedly connected to the outer wall of each connecting rod 7, and a first ball bearing 10 embedded in the inner end of each connecting rod 7. The outer end of each connecting rod 7 penetrates the drum wall of the core drum 5 and is slidably connected thereto. The limiting sleeve 9 is located between the corresponding diameter expansion push plate 6 and the outer wall of the core drum 5 and is used to limit the distance the connecting rod 7 slides into the core drum 5. One end of the first spring 8 is fixedly connected to the diameter expansion push plate 6, and the other end of the first spring 8 is fixedly connected to the outer wall of the core drum 5.

[0038] The reciprocating extrusion assembly is located inside the core drum 5 and installed at the bottom of the core shaft 3. The reciprocating extrusion assembly is used to periodically extrude the first ball 10 at the inner end of each connecting rod 7 to drive each expanding push plate 6 to move synchronously back and forth along the radial direction of the core drum 5 through the corresponding connecting rod 7.

[0039] In traditional fixed winding machines, the inner ring tends to loosen and collapse during the later stages of winding due to the increase in winding diameter. In this device, the reciprocating extrusion assembly drives the diameter-expanding pusher plate 6 to move radially and synchronously, adjusting the effective diameter of the winding machine in real time to ensure that the inner ring remains tightly attached to the oxygen-free copper rod, thus preventing slippage between layers.

[0040] The expansion pusher plate 6 expands and contracts synchronously with the reciprocating extrusion assembly, adjusting the winding inner diameter in real time to prevent the oxygen-free copper rod from bending excessively, resulting in dead bends or micro-cracks.

[0041] like Figure 4 and Figure 7As shown, the reciprocating extrusion assembly includes two reciprocating lead screws 11 with their ends fixed to each other, two reciprocating sliding sleeves 13, and two axial pressure blocks 12;

[0042] The top of the upper reciprocating screw 11 is fixedly connected to the core winding shaft 3, and the bottom of the lower reciprocating screw 11 is rotatably connected to the inner wall of the core winding drum 5.

[0043] The reciprocating sleeves 13 are respectively fitted on the outer peripheral wall of the corresponding reciprocating screw 11 and are slidably connected with the reciprocating groove on the reciprocating screw 11;

[0044] Two axial pressure blocks 12 are fixedly connected to the outer peripheral wall of the corresponding reciprocating sleeve 13. The outer peripheral wall of each axial pressure block 12 is formed with an outer conical surface. The outer conical surface is used to radially press the first ball 10 at the inner end of the corresponding connecting rod 7 when the reciprocating sleeve 13 moves axially back and forth with the reciprocating screw 11.

[0045] The reciprocating extrusion assembly also includes two fixed blocks 16. The ends of the fixed blocks 16 are fixedly connected to the inner wall of the core drum 5. The bottom of each fixed block 16 is fixedly connected to a guide rod 17. The outer wall of each guide rod 17 is slidably connected to two sliders 18. The two sliders 18 are fixedly connected to the corresponding axial pressure blocks 12.

[0046] like Figure 4 and Figure 6 As shown, a mounting plate 14 is provided below the core drum 5. Two first slide rods 15 are fixedly connected to the top of the mounting plate 14. The top of the first slide rods 15 extends into the core drum 5 and is slidably connected to it. A second spring 22 is sleeved on the outer wall of each first slide rod 15. One end of the second spring 22 is fixedly connected to the core drum 5, and the other end of the second spring 22 is fixedly connected to the mounting plate 14.

[0047] The bottom of the mounting plate 14 is fixedly connected to a claw 19. A slot 20 is provided between two adjacent claws of the claw 19, and a guide surface 21 is provided at the claw end of the claw 19.

[0048] like Figure 1 and Figure 4 As shown, a first cylinder 23 is fixedly connected to the top of the cylinder cover 4. The output end of the first cylinder 23 passes through the core roller 3 and extends to its outer side. A sliding hole 24 is opened on the top of the cylinder cover 4. A support plate 25 is fixedly connected to the output end of the first cylinder 23. The bottom of the support plate 25 is slidably connected to the inner wall of the sliding hole 24. The outer wall of the support plate 25 is fixedly connected to the outer wall of the cable casting tube 42. The cable casting tube 42 is a thin-walled metal corrugated tube.

[0049] In traditional fixed winding systems, oxygen-free copper rods tend to shift laterally during winding, forming a tower-shaped coil. In this device, a thin-walled metal corrugated tube 42, in conjunction with a first cylinder 23, moves radially back and forth to achieve precise routing of the oxygen-free copper rods. A lifting ring 30 drives the tray assembly to move axially, ensuring the oxygen-free copper rods rotate evenly.

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, multiple brackets 26 are fixedly connected to the inner wall of the take-up sleeve 1. A second cylinder 28 is fixedly connected to the top of each bracket 26. A second slide rod 27 is fixedly connected to the inner wall of each bracket 26. A connecting arm 29 is slidably connected to the outer wall of the second slide rod 27. The connecting arm 29 passes through the bracket 26 and is slidably connected to it. The top of the connecting arm 29 is fixedly connected to the output end of the second cylinder 28.

[0051] like Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the take-up sleeve 1 is provided with a lifting ring 30. The outer wall of the lifting ring 30 is fixedly connected to the connecting arm 29. Multiple limit rods 31 are slidably connected to the inner wall of the lifting ring 30. Multiple machine bases 32 are fixedly connected to the outer wall of the lifting ring 30. A third cylinder 33 is fixedly connected to the outer wall of each machine base 32. The output end of the third cylinder 33 is fixedly connected to the limit rod 31. A locking block 34 is fixedly connected to the inner end of each limit rod 31. An arc groove 35 is opened at the arc end of the locking block 34. A rotatable second ball bearing 36 is embedded in the inner wall of the arc groove 35.

[0052] Below the take-up sleeve 1 is a roller conveyor 2, which is used for horizontally conveying the pallet assembly. The pallet assembly includes a bracket 41, a support plate 37 fixedly connected to the top of the bracket 41, a locking rod 39 fixedly connected to the inner wall of the support plate 37, and an anti-shrink sleeve 40 fixedly connected to the top of the support plate 37. An annular groove 38 is opened on the outer wall of the support plate 37. The locking block 34 engages with the inner wall of the annular groove 38. The second ball 36 rolls with the inner wall of the annular groove 38. When the claw 19 descends, the guide surface 21 on its claw contacts the locking rod 39, so that the locking rod 39 engages with the locking groove 20. The pallet assembly is used to increase the resistance when the core drum 5 rotates with the cover 4, so that the core drum 5 remains stationary.

[0053] Traditional winding requires manual disassembly of the roll material, which is inefficient. In this device, the locking rod 39 and the locking claw 19 engage in the locking groove 20 to achieve automatic locking. The tray assembly can be removed as a whole, and the anti-shrink sleeve 40 temporarily supports the inner ring to prevent loosening during unloading.

[0054] Working principle: The roller conveyor 2 transports the pallet assembly to below the take-up sleeve 1 and then stops. The second cylinder 28 pushes the connecting arm 29 to slide downward along the second slide bar 27. The connecting arm 29 drives the lifting ring 30 to move downward and fit onto the pallet 37. The third cylinder 33 drives the arc end of the locking block 34 to engage with the annular groove 38. The second ball bearing 36 contacts the inner wall of the annular groove 38. The second cylinder 28 drives the lifting ring 30 to move upward through the connecting arm 29. The pallet 37 moves upward until the anti-shrinkage sleeve 40 at the top of the pallet 37 inside the take-up sleeve 1 moves between the expansion push plate 6 and the core drum 5.

[0055] During the upward movement of the pallet 37, the locking rod 39 abuts against the locking claw 19, and under the mutual compression of the locking claw 19 and the locking rod 39, the annular groove 38 of the outer ring of the pallet 37 rolls along the second ball 36, causing the pallet 37 to rotate. The locking rod 39 slides along the guide surface 21 of the claw part of the locking claw 19 into the locking groove 20, thereby fixing the locking claw 19.

[0056] The core reel 3 drives the cylinder cover 4 and the spinning tube 42 to rotate. The oxygen-free copper rod is wound onto the tray 37 through the spinning tube 42. The tray assembly increases the resistance when the core reel 5 rotates, so that the core reel 5 will not rotate with the cylinder cover 4. The core reel 3 drives the two reciprocating screws 11 to rotate. At this time, the corresponding reciprocating sleeves 13 drive the axial pressure blocks 12 to move synchronously in the opposite direction. The axial pressure blocks 12 squeeze the first ball 10 at the end of the expansion push plate 6, thereby causing multiple expansion push plates 6 to move back and forth along the radial direction of the core reel 5 at the same time, ensuring the control accuracy of the inner diameter of the oxygen-free copper rod coil.

[0057] During the winding process, the second cylinder 28 pushes the lifting ring 30 downward to make the oxygen-free copper rod rotate evenly. At the same time, the first cylinder 23 pushes the support plate 25 to move. The support plate 25 drives the lower end of the wire casting tube 42 to move back and forth along the radial direction of the tube cover 4, so that the oxygen-free copper rod can be evenly distributed on the end face formed by winding, avoiding unevenness of the end face of the oxygen-free copper rod coil.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous rolling mill for oxygen-free copper rods, characterized in that, include: Retractor (1); The winding assembly includes a core spool (3), a cap (4), a core drum (5), and a spindle tube (42). The cap (4) is fitted and fixedly connected to the outer peripheral wall of the end of the core spool (3). The core drum (5) is rotatably connected to the bottom of the cap (4). The spindle tube (42) is fixedly connected to the outer wall of the core spool (3). The diameter expansion assembly includes multiple diameter expansion push plates (6) spaced apart circumferentially along the core drum (5), two connecting rods (7) fixedly connected to the outer wall of each diameter expansion push plate (6), a first spring (8) sleeved on the outer wall of each connecting rod (7), a limiting sleeve (9) fixedly connected to the outer wall of each connecting rod (7), and a first ball bearing (10) embedded in the inner end of each connecting rod (7). The outer end of each connecting rod (7) penetrates the drum wall of the core drum (5) and is slidably connected thereto. The limiting sleeve (9) is located between the corresponding diameter expansion push plate (6) and the outer wall of the core drum (5) to limit the distance by which the connecting rod (7) slides into the core drum (5). One end of the first spring (8) is fixedly connected to the diameter expansion push plate (6), and the other end of the first spring (8) is fixedly connected to the outer wall of the core drum (5). A reciprocating extrusion assembly is disposed inside the core drum (5) and installed at the bottom of the core shaft (3). The reciprocating extrusion assembly is used to periodically extrude the first ball (10) at the inner end of each connecting rod (7) to drive each expanding push plate (6) to move synchronously in the radial direction of the core drum (5) through the corresponding connecting rod (7). The reciprocating extrusion assembly includes: Two reciprocating screws (11) with their ends fixed to each other, the top of the upper reciprocating screw (11) is fixedly connected to the core reel (3), and the bottom of the lower reciprocating screw (11) is rotatably connected to the inner wall of the core reel (5). Two reciprocating sleeves (13) are respectively sleeved on the outer peripheral wall of the corresponding reciprocating screw (11) and slidably connected with the reciprocating groove on the reciprocating screw (11); Two axial pressure blocks (12) are fixedly connected to the outer peripheral wall of the corresponding reciprocating sleeve (13). The outer peripheral wall of each axial pressure block (12) forms an outer conical surface. The outer conical surface is used to radially press the first ball (10) at the inner end of the corresponding connecting rod (7) when the reciprocating sleeve (13) moves axially back and forth with the reciprocating screw (11) rotates. The reciprocating extrusion assembly also includes two fixed blocks (16), the ends of which are fixedly connected to the inner wall of the core drum (5), and the bottom of each fixed block (16) is fixedly connected to a guide rod (17). The outer wall of each guide rod (17) is slidably connected to two sliders (18), and the two sliders (18) are fixedly connected to the corresponding axial pressure block (12).

2. The oxygen-free copper rod continuous rolling mill according to claim 1, characterized in that: Below the core drum (5) is a mounting plate (14). The top of the mounting plate (14) is fixedly connected to two first slide rods (15). The top of the first slide rods (15) extends into the core drum (5) and is slidably connected to it. The outer wall of each of the first slide rods (15) is fitted with a second spring (22). One end of the second spring (22) is fixedly connected to the core drum (5), and the other end of the second spring (22) is fixedly connected to the mounting plate (14).

3. The oxygen-free copper rod continuous rolling mill according to claim 2, characterized in that: The bottom of the mounting plate (14) is fixedly connected to a claw (19), and a slot (20) is provided between two adjacent claws of the claw (19), and a guide surface (21) is provided at the claw end of the claw (19).

4. The oxygen-free copper rod continuous rolling mill according to claim 3, characterized in that: The top of the cylinder cover (4) is fixedly connected to a first cylinder (23). The output end of the first cylinder (23) passes through the core roller (3) and extends to its outer side. The top of the cylinder cover (4) is provided with a sliding hole (24). The output end of the first cylinder (23) is fixedly connected to a support plate (25). The bottom of the support plate (25) is slidably connected to the inner wall of the sliding hole (24). The outer wall of the support plate (25) is fixedly connected to the outer wall of the wire-spinning tube (42). The wire-spinning tube (42) is a thin-walled metal corrugated tube.

5. The oxygen-free copper rod continuous rolling mill according to claim 4, characterized in that: The inner wall of the take-up sleeve (1) is fixedly connected to multiple brackets (26), and the top of each bracket (26) is fixedly connected to a second cylinder (28). The inner wall of each bracket (26) is fixedly connected to a second slide rod (27), and the outer wall of the second slide rod (27) is slidably connected to a connecting arm (29). The connecting arm (29) passes through the bracket (26) and is slidably connected to it. The top of the connecting arm (29) is fixedly connected to the output end of the second cylinder (28).

6. The oxygen-free copper rod continuous rolling mill according to claim 5, characterized in that: The winding sleeve (1) is provided with a lifting ring (30). The outer wall of the lifting ring (30) is fixedly connected to the connecting arm (29). Multiple limit rods (31) are slidably connected to the inner wall of the lifting ring (30). Multiple machine bases (32) are fixedly connected to the outer wall of the lifting ring (30). A third cylinder (33) is fixedly connected to the outer wall of each machine base (32). The output end of the third cylinder (33) is fixedly connected to the limit rod (31). A locking block (34) is fixedly connected to the inner end of each limit rod (31). An arc groove (35) is opened at the arc end of the locking block (34). A rotatable second ball (36) is embedded in the inner wall of the arc groove (35).

7. The oxygen-free copper rod continuous rolling mill according to claim 6, characterized in that: Below the take-up sleeve (1) is a roller conveyor (2) for horizontally conveying the pallet assembly.

8. The oxygen-free copper rod continuous rolling mill according to claim 7, characterized in that: The tray assembly includes a bracket (41), a tray plate (37) fixedly connected to the top of the bracket (41), a locking rod (39) fixedly connected to the inner wall of the tray plate (37), and an anti-shrink sleeve (40) fixedly connected to the top of the tray plate (37). The outer wall of the tray plate (37) is provided with an annular groove (38). The locking block (34) engages with the inner wall of the annular groove (38). The second ball (36) rolls with the inner wall of the annular groove (38). When the claw (19) descends, the guide surface (21) on its claw contacts the locking rod (39), so that the locking rod (39) engages with the locking groove (20). The tray assembly is used to increase the resistance of the core drum (5) when it rotates with the cover (4), so that the core drum (5) remains stationary.

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