Novel oxygen-free copper rod continuous mill

Abstract

The invention belongs to the technical field of oxygen-free copper rod rolling, and discloses a novel oxygen-free copper rod continuous mill which comprises a winding sleeve, a winding assembly, a diameter expanding assembly and a reciprocating extrusion assembly, the winding assembly comprises a core reel, a barrel cover, a core reel and a wire throwing pipe, and the barrel cover is arranged on and fixedly connected to the peripheral wall of the end of the core reel in a sleeving mode; the core winding drum is rotationally connected to the bottom of the drum cover, and the thread throwing pipe is fixedly connected to the outer wall of the core winding drum. According to the device, a plurality of diameter expanding push plates distributed in the circumferential direction in the diameter expanding assembly form a telescopic winding drum wall, the telescopic winding drum wall is linked with the reciprocating extrusion assembly through balls at the tail ends of connecting rods, radial synchronous reciprocating movement is achieved, the winding inner diameter can be accurately adjusted in real time through the structure, and it is ensured that an oxygen-free copper rod is wound above the critical bending radius all the time; the situation that the local tensile strength of the oxygen-free copper rod is reduced due to the fact that plastic deformation caused by excessive bending forms dead bends or microcracks is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen-free copper rod rolling, and more particularly to a novel oxygen-free copper rod continuous rolling mill. Background Art

[0002] Oxygen-free copper rod does not contain oxygen or any deoxidizer residue, but in fact it still contains very trace oxygen and some impurities. According to the standard, the oxygen content is not more than 0.02%, the total impurity content is not more than 0.05%, and the copper purity is greater than 99.95%.

[0003] The oxygen-free copper rod mill processes copper raw materials into oxygen-free copper rod of specific specifications through a continuous rolling process. It is widely used in high-end manufacturing fields such as wire and cable, and electronic components. The oxygen-free copper rod mill comprises a heating system, a rolling mill body, and a take-up system. The take-up system, as the critical terminal link in the continuous rolling process, has a significant impact on the production line's continuous operating efficiency. Its operational stability also plays a decisive role in the surface quality, dimensional accuracy, and subsequent processing performance of the oxygen-free copper rod.

[0004] The winding system mainly reels the oxygen-free copper rod through a winder. During the winding process of the existing oxygen-free copper rod winder, the oxygen-free copper rod is introduced into the winder through a guide wheel group, and the copper tube is wound on the top of the tray through the wire-throwing tube on the winder. However, during the winding process, the inner diameter of the copper tube roll is difficult to control, resulting in plastic deformation due to excessive bending during the winding process, forming dead bends or microcracks, and causing a decrease in local tensile strength. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a novel oxygen-free copper rod continuous rolling mill. Multiple circumferentially distributed expansion push plates in an expansion assembly form a retractable winding drum wall, enabling precise real-time adjustment of the winding inner diameter. This ensures that the oxygen-free copper rod is always wound above the critical bending radius, preventing plastic deformation caused by excessive bending, which could lead to dead bends or microcracks.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a novel oxygen-free copper rod continuous rolling mill, comprising a coiling sleeve, a winding assembly, a diameter expansion assembly and a reciprocating extrusion assembly; The winding assembly includes a core reel, a drum cover, a core reel and a line-spinning tube, wherein the drum cover is sleeved and fixedly connected to the outer peripheral wall of the end of the core reel, the core reel is rotatably connected to the bottom of the drum cover, and the line-spinning tube is fixedly connected to the outer wall of the core reel; The expansion assembly includes a plurality of expansion push plates distributed at intervals along the circumference of the core reel, two connecting rods fixedly connected to the outer wall of each of the expansion push plates, 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 portion of each connecting rod, wherein the outer end portion of each connecting rod passes through the barrel wall of the core reel and is slidably connected thereto, the limiting sleeve is located between the corresponding expansion push plate and the outer wall of the core reel, for limiting the distance that the connecting rod slides toward the inside of the core reel, one end of the first spring is fixedly connected to the expansion push plate, and the other end of the first spring is fixedly connected to the outer wall of the core reel; The reciprocating extrusion assembly is arranged inside the core reel and installed at the bottom of the core reel. The reciprocating extrusion assembly is used to periodically squeeze the first ball at the inner end of each connecting rod to drive each expansion push plate to move synchronously back and forth along the radial direction of the core reel through the corresponding connecting rod.

[0007] Preferably, the reciprocating extrusion assembly comprises two reciprocating screw rods with their ends fixed to each other, two reciprocating sleeves and two axial pressing blocks; The top of the reciprocating screw rod located at the top is fixedly connected to the core reel, and the bottom of the reciprocating screw rod located at the bottom is rotatably connected to the inner wall of the core reel; The reciprocating sleeves are respectively sleeved on the outer peripheral walls of the corresponding reciprocating screw rods and are slidably connected to the reciprocating slide grooves on the reciprocating screw rods; The 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 squeeze the first ball at the inner end of the corresponding connecting rod when the reciprocating sleeve rotates with the reciprocating screw and makes axial reciprocating movement.

[0008] Preferably, the reciprocating extrusion assembly also includes two fixed blocks, the ends of the fixed blocks are respectively fixedly connected to the inner walls of the core reel, the bottoms of the fixed blocks are fixedly connected to guide rods, the outer walls of the guide rods are slidably connected to two sliders, and the two sliders are respectively fixedly connected to the corresponding axial pressure blocks.

[0009] Preferably, a mounting plate is provided under the core reel, and two first sliding rods are fixedly connected to the top of the mounting plate. The tops of the first sliding rods extend into the core reel and are slidingly connected to it. The outer walls of the first sliding rods are each sleeved with a second spring, one end of the second spring is fixedly connected to the core reel, and the other end of the second spring is fixedly connected to the mounting plate.

[0010] Preferably, a clamping claw is fixedly connected to the bottom of the mounting plate, a clamping groove is provided between two adjacent claws of the clamping claw, and a guide curved surface is provided at the claw end of the clamping claw.

[0011] Preferably, the top of the cylinder cover is fixedly connected to a first cylinder, the output end of the first cylinder passes through the core reel and extends to its outside, a sliding hole is provided on the top of the cylinder cover, the output end of the first cylinder is fixedly connected to a support plate, the bottom of the support plate is slidingly 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 wire-flinging tube, and the wire-flinging tube is a thin-walled metal bellows.

[0012] Preferably, the inner wall of the winding sleeve is fixedly connected to a plurality of brackets, the top of the bracket is fixedly connected to a second cylinder, the second cylinder is fixedly connected to the top of the bracket, the inner wall of the 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 output end of 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.

[0013] Preferably, a lifting ring is provided in the winding sleeve, the outer wall of the lifting ring is fixedly connected to the connecting arm, the inner wall of the lifting ring is slidably connected to multiple limit rods, the outer wall of the lifting ring is fixedly connected to multiple machine bases, the outer walls of the machine bases are fixedly connected to a third cylinder, the output end of the third cylinder is fixedly connected to the limit rod, the inner ends of the limit rods are fixedly connected to a clamping block, the arc end of the clamping block is provided with an arc groove, and the inner wall of the arc groove is embedded with a rotatable second ball.

[0014] Preferably, a roller is provided under the winding sleeve, and the roller is used for horizontally conveying the pallet assembly. The pallet assembly includes a rack, a support plate fixedly connected to the top of the rack, a clamping rod fixedly connected to the inner wall of the support plate, and a shrinkage-proof sleeve fixedly connected to the top of the support plate. The outer wall of the support plate is provided with an annular groove, the clamping block is engaged with the inner wall of the annular groove, and the second ball is rollingly connected to the inner wall of the annular groove. When the clamping claw descends, the guide curved surface on its clamping claw contacts the clamping rod, so that the clamping rod is engaged with the clamping groove. The pallet assembly is used to increase the resistance of the core reel when it follows the rotation of the drum cover, so that the core reel remains stationary.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Multiple circumferentially distributed expansion push plates in the expansion assembly form a retractable reel wall, which is linked to the reciprocating extrusion assembly through the ball bearing at the end of the connecting rod to achieve radial synchronous reciprocating movement. This design enables the winding inner diameter to be accurately adjusted 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, the formation of dead bends or microcracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the present invention; Figure 3 Schematic diagram of the mounting structure of the bracket of the present invention; Figure 4 This is a schematic diagram of the installation structure of the axial pressing block of the present invention; Figure 5 This is a schematic diagram of the installation structure of the diameter expansion push plate of the present invention; Figure 6 Schematic diagram of the overall structure of the clamping jaws of the present invention; Figure 7 Schematic diagram of the installation structure of the reciprocating sleeve of the present invention; Figure 8 Schematic diagram of the installation structure of the clamping rod of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.

[0018] Explanation of the numbers in the figure: 1. Winding sleeve; 2. Roller; 3. Core reel; 4. Cylinder cover; 5. Core reel; 6. Diameter expansion push plate; 7. Connecting rod; 8. First spring; 9. Limiting sleeve; 10. First ball bearing; 11. Reciprocating screw; 12. Axial pressure block; 13. Reciprocating sleeve; 14. Mounting plate; 15. First slide rod; 16. Fixed block; 17. Guide rod; 18. Slider; 19. Clamping claw; 20. Clamping groove; 21. Guide 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. Limit rod; 32. Machine base; 33. Third cylinder; 34. Block; 35. Arc groove; 36. Second ball bearing; 37. Support plate; 38. Annular groove; 39. Clamping rod; 40. Shrink sleeve; 41. Plug rack; 42. Wire-throwing tube. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The specific embodiments of the present invention are described in detail below in conjunction with the drawings in the specification.

[0020] like Figure 1-Figure 5 As shown, a novel oxygen-free copper rod continuous rolling mill includes a coiling sleeve 1, a winding assembly, an expanding assembly, and a reciprocating extrusion assembly; The winding assembly includes a core reel 3, a drum cover 4, a core reel 5 and a line-spinning tube 42. The drum cover 4 is sleeved and fixedly connected to the outer peripheral wall of the end of the core reel 3. The core reel 5 is rotatably connected to the bottom of the drum cover 4. The line-spinning tube 42 is fixedly connected to the outer wall of the core reel 3. The diameter expansion assembly includes a plurality of diameter expansion push plates 6 distributed at intervals along the circumference of the core reel 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 10 embedded in the inner end of each connecting rod 7, wherein the outer end of each connecting rod 7 passes through the wall of the core reel 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 reel 5, and is used to limit the sliding distance of the connecting rod 7 into the core reel 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 reel 5; The reciprocating extrusion assembly is arranged inside the core reel 5 and installed at the bottom of the core reel 3. The reciprocating extrusion assembly is used to periodically squeeze the first ball 10 at the inner end of each connecting rod 7 to drive each expansion push plate 6 to move synchronously back and forth along the radial direction of the core reel 5 through the corresponding connecting rod 7.

[0021] In traditional fixed reels, the inner ring relaxes and collapses during the later stages of rewinding due to the increased roll diameter. In this device, the reciprocating extrusion assembly drives the expansion push plate 6 to move back and forth in a synchronous radial direction, adjusting the effective reel diameter in real time to keep the inner ring in close contact with the oxygen-free copper rod and prevent slippage between layers.

[0022] The expansion push plate 6 expands and contracts synchronously with the reciprocating extrusion assembly, and adjusts the winding inner diameter in real time to avoid excessive bending of the oxygen-free copper rod to produce dead bends or micro cracks.

[0023] like Figure 4 and Figure 7 As shown, the reciprocating extrusion assembly includes two reciprocating screw rods 11 with their ends fixed to each other, two reciprocating sleeves 13 and two axial pressing blocks 12; The top of the reciprocating screw rod 11 located at the top is fixedly connected to the core reel 3, and the bottom of the reciprocating screw rod 11 located at the bottom is rotatably connected to the inner wall of the core reel 5; The reciprocating sleeves 13 are respectively sleeved on the outer peripheral walls of the corresponding reciprocating screw rods 11 and are slidably connected to the reciprocating slide grooves on the reciprocating screw rods 11; The two axial pressure blocks 12 are respectively 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, which is used to radially squeeze the first ball 10 at the inner end of the corresponding connecting rod 7 when the reciprocating sleeve 13 rotates with the reciprocating screw 11 and makes axial reciprocating movement.

[0024] The reciprocating extrusion assembly also includes two fixed blocks 16, the ends of the fixed blocks 16 are fixedly connected to the inner walls of the core reel 5, the bottoms of the fixed blocks 16 are fixedly connected to guide rods 17, the outer walls of the guide rods 17 are slidably connected to two sliders 18, and the two sliders 18 are fixedly connected to the corresponding axial pressure blocks 12.

[0025] like Figure 4 and Figure 6 As shown, a mounting plate 14 is provided below the core reel 5, and two first slide bars 15 are fixedly connected to the top of the mounting plate 14. The tops of the first slide bars 15 extend into the core reel 5 and are slidably connected thereto. The outer walls of the first slide bars 15 are sleeved with second springs 22, and one end of the second spring 22 is fixedly connected to the core reel 5, and the other end of the second spring 22 is fixedly connected to the mounting plate 14.

[0026] A clamping claw 19 is fixedly connected to the bottom of the mounting plate 14 . A clamping groove 20 is provided between two adjacent claws of the clamping claw 19 . A guide curved surface 21 is provided at the claw end of the clamping claw 19 .

[0027] like Figure 1 and Figure 4 As shown, the top of the cylinder cover 4 is fixedly connected to the first cylinder 23, the output end of the first cylinder 23 passes through the core reel 3 and extends to its outside, a sliding hole 24 is opened on the top of the cylinder cover 4, the output end of the first cylinder 23 is fixedly connected to the support plate 25, the bottom of the support plate 25 is slidably connected to the inner wall of the sliding hole 24, and the outer wall of the support plate 25 is fixedly connected to the outer wall of the wire-throwing tube 42, and the wire-throwing tube 42 is a thin-walled metal bellows.

[0028] Traditional fixed reels can cause oxygen-free copper rods to shift left and right during winding, forming a pyramidal coil. In this device, a thin-walled metal bellows-shaped wire-spinning tube 42, coupled with the radial reciprocating motion of the first cylinder 23, ensures precise arrangement of the oxygen-free copper rods. The lifting ring 30 drives the axial rise and fall of the tray assembly, ensuring uniform coiling of the oxygen-free copper rods.

[0029] like Figure 1 、 Figure 2 and Figure 3As shown, a plurality of brackets 26 are fixedly connected to the inner wall of the winding sleeve 1, the top of each bracket 26 is fixedly connected to a second cylinder 28, the second cylinder 28 is fixedly connected to the top of the bracket 26, the inner wall of each bracket 26 is fixedly connected to a second slide bar 27, the outer wall of the second slide bar 27 is slidably connected to a connecting arm 29, the output end of the connecting arm 29 passes through the bracket 26 and is slidably connected thereto, and the top of the connecting arm 29 is fixedly connected to the output end of the second cylinder 28.

[0030] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9 As shown, a lifting ring 30 is provided in the winding sleeve 1, the outer wall of the lifting ring 30 is fixedly connected to the connecting arm 29, the inner wall of the lifting ring 30 is slidably connected to multiple limit rods 31, the outer wall of the lifting ring 30 is fixedly connected to multiple machine bases 32, the outer walls of the machine bases 32 are fixedly connected to the third cylinder 33, the output end of the third cylinder 33 is fixedly connected to the limit rod 31, the inner ends of the limit rods 31 are fixedly connected to the clamping blocks 34, the arc ends of the clamping blocks 34 are provided with arc grooves 35, and the inner walls of the arc grooves 35 are embedded with rotatable second balls 36.

[0031] A roller conveyor 2 is provided below the winding sleeve 1, and the roller conveyor 2 is used for horizontally conveying the pallet assembly. The pallet assembly includes a rack 41, a support plate 37 fixedly connected to the top of the rack 41, a clamping rod 39 fixedly connected to the inner wall of the support plate 37, and an anti-shrinkage sleeve 40 fixedly connected to the top of the support plate 37. An annular groove 38 is provided on the outer wall of the support plate 37, and the clamping block 34 is clamped together with the inner wall of the annular groove 38. The second ball 36 is rollingly connected to the inner wall of the annular groove 38. When the claw 19 descends, the guide curved surface 21 on its claw contacts the clamping rod 39, so that the clamping rod 39 is clamped with the clamping groove 20. The pallet assembly is used to increase the resistance of the core reel 5 when it rotates following the drum cover 4, so that the core reel 5 remains stationary.

[0032] Traditionally, the coils need to be manually disassembled after winding, which is inefficient. In this device, the clamping rod 39 engages with the clamping groove 20 of the clamping claw 19 to achieve automatic locking, and the tray assembly can be removed as a whole. The anti-shrinkage sleeve 40 temporarily supports the inner ring to prevent it from loosening during unloading.

[0033] Working Principle: Roller 2 conveys the tray assembly to the bottom of the winding sleeve 1 and 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 downward and onto the support plate 37. The third cylinder 33 drives the arc end of the clamping block 34 from the clamping block 34 into the annular groove 38, and the second ball 36 contacts the inner wall of the annular groove 38. The second cylinder 28 drives the lifting ring 30 upward through the connecting arm 29. The support plate 37 moves upward to the inside of the winding sleeve 1. The anti-shrink sleeve 40 at the top of the support plate 37 moves to between the expansion push plate 6 and the core reel 5. During the upward movement of the support plate 37, the clamping rod 39 abuts against the claw 19. Under the mutual compression of the claw 19 and the clamping rod 39, the annular groove 38 on the outer ring of the support plate 37 rolls along the second ball 36, causing the support plate 37 to rotate. The clamping rod 39 slides along the guide curved surface 21 of the claw 19 into the clamping groove 20, thereby fixing the claw 19. The core reel 3 drives the drum cover 4 and the wire-throwing tube 42 to rotate, and the oxygen-free copper rod is wound onto the supporting plate 37 through the wire-throwing tube 42. The tray assembly increases the resistance of the core reel 5 when it rotates, so that the core reel 5 will not rotate with the drum cover 4. The core reel 3 drives the two reciprocating screws 11 to rotate. At this time, the corresponding reciprocating sleeves 13 respectively drive the axial pressure blocks 12 to move synchronously in the opposite direction, and the first ball 10 at the end of the diameter-expanding push plate 6 is squeezed by the axial pressure blocks 12, so that the multiple diameter-expanding push plates 6 can reciprocate 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 roll; During the winding process, the second cylinder 28 pushes the lifting ring 30 downward so that the oxygen-free copper rod can coil evenly. At the same time, the first cylinder 23 pushes the support plate 25 to move, and the support plate 25 drives the lower end of the wire-swinging tube 42 to move back and forth along the radial direction of the cylinder cover 4, so that the oxygen-free copper rod can be evenly distributed on the end surface formed by winding, avoiding uneven end surfaces of the oxygen-free copper rod roll.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of oxygen-free copper rod continuous rolling mill, characterized in that: include: Winding sleeve (1); A winding assembly comprises a core reel (3), a drum cover (4), a core reel (5) and a line-spinning tube (42), wherein the drum cover (4) is sleeved on and fixedly connected to the outer peripheral wall of the end of the core reel (3), the core reel (5) is rotatably connected to the bottom of the drum cover (4), and the line-spinning tube (42) is fixedly connected to the outer wall of the core reel (3); An expansion assembly comprises a plurality of expansion push plates (6) spaced apart along the circumference of the core drum (5), two connecting rods (7) fixedly connected to the outer wall of each 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 (10) embedded in the inner end of each connecting rod (7), wherein the outer end of each connecting rod (7) passes through the wall of the core drum (5) and is slidably connected thereto, the limiting sleeve (9) is located between the corresponding expansion push plate (6) and the outer wall of the core drum (5), and is used to limit the distance that the connecting rod (7) slides toward the inside of the core drum (5), one end of the first spring (8) is fixedly connected to the 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 arranged inside the core reel (5) and installed at the bottom of the core reel (3). The reciprocating extrusion assembly is used to periodically squeeze 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 reel (5) through the corresponding connecting rod (7).

2. The novel oxygen-free copper rod continuous rolling mill according to claim 1, characterized in that: The reciprocating extrusion assembly comprises: A reciprocating screw rod (11) with two ends fixed to each other, wherein the top of the reciprocating screw rod (11) located above is fixedly connected to the core reel (3), and the bottom of the reciprocating screw rod (11) located below is rotatably connected to the inner wall of the core reel (5); Two reciprocating sleeves (13), the reciprocating sleeves (13) being respectively sleeved on the outer peripheral walls of the corresponding reciprocating screw rods (11) and being slidably connected to the reciprocating slide grooves on the reciprocating screw rods (11); Two axial pressing blocks (12) are respectively fixedly connected to the outer peripheral wall of the corresponding reciprocating sleeve (13), and the outer peripheral wall of each axial pressing block (12) is formed with an outer conical surface, and the outer conical surface is used to radially squeeze the first ball (10) at the inner end of the corresponding connecting rod (7) when the reciprocating sleeve (13) rotates with the reciprocating screw (11) and makes axial reciprocating movement.

3. The novel oxygen-free copper rod continuous rolling mill according to claim 2, characterized in that: The reciprocating extrusion assembly further comprises two fixed blocks (16), the ends of the fixed blocks (16) are respectively fixedly connected to the inner wall of the core reel (5), the bottoms of the fixed blocks (16) are respectively fixedly connected to a guide rod (17), the outer walls of the guide rod (17) are respectively slidably connected to two sliders (18), and the two sliders (18) are respectively fixedly connected to the corresponding axial pressing blocks (12).

4. The novel oxygen-free copper rod continuous rolling mill according to claim 3, characterized in that: A mounting plate (14) is provided below the core reel (5), and two first slide bars (15) are fixedly connected to the top of the mounting plate (14). The tops of the first slide bars (15) extend into the core reel (5) and are slidably connected thereto. Second springs (22) are sleeved on the outer walls of the first slide bars (15), and one end of the second spring (22) is fixedly connected to the core reel (5), and the other end of the second spring (22) is fixedly connected to the mounting plate (14).

5. The novel oxygen-free copper rod continuous rolling mill according to claim 4, characterized in that: A clamping claw (19) is fixedly connected to the bottom of the mounting plate (14), a clamping groove (20) is provided between two adjacent claw portions of the clamping claw (19), and a guide curved surface (21) is provided at the claw end of the clamping claw (19).

6. The novel oxygen-free copper rod continuous rolling mill according to claim 5, 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 reel (3) and extends to the outside thereof, 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-swinging tube (42), and the wire-swinging tube (42) is a thin-walled metal bellows.

7. The novel oxygen-free copper rod continuous rolling mill according to claim 6, characterized in that: The inner wall of the winding sleeve (1) is fixedly connected to a plurality of brackets (26), the top of each bracket (26) is fixedly connected to a second cylinder (28), the second cylinder (28) is fixedly connected to the top of the bracket (26), the inner wall of each bracket (26) is fixedly connected to a second slide bar (27), the outer wall of the second slide bar (27) is slidably connected to a connecting arm (29), the output end of the connecting arm (29) passes through the bracket (26) and is slidably connected thereto, and the top of the connecting arm (29) is fixedly connected to the output end of the second cylinder (28).

8. The novel oxygen-free copper rod continuous rolling mill according to claim 7, characterized in that: A lifting ring (30) is provided inside the winding sleeve (1), the outer wall of the lifting ring (30) is fixedly connected to the connecting arm (29), the inner wall of the lifting ring (30) is slidably connected to a plurality of limit rods (31), the outer wall of the lifting ring (30) is fixedly connected to a plurality of machine bases (32), the outer walls of the machine bases (32) are all fixedly connected to a third cylinder (33), the output end of the third cylinder (33) is fixedly connected to the limit rod (31), the inner ends of the limit rods (31) are all fixedly connected to a clamping block (34), the arc end of the clamping block (34) is provided with an arc groove (35), and the inner wall of the arc groove (35) is embedded with a rotatable second ball (36).

9. The novel oxygen-free copper rod continuous rolling mill according to claim 1, characterized in that: A roller conveyor (2) is provided below the winding sleeve (1), and the roller conveyor (2) is used for horizontally conveying the pallet assembly.

10. The novel oxygen-free copper rod continuous rolling mill according to claim 9, characterized in that: The tray assembly includes a rack (41), a support plate (37) fixedly connected to the top of the rack (41), a clamping rod (39) fixedly connected to the inner wall of the support plate (37), and a shrink-proof sleeve (40) fixedly connected to the top of the support plate (37). The outer wall of the support plate (37) is provided with an annular groove (38), the clamping block (34) is engaged with the inner wall of the annular groove (38), the second ball (36) is connected to the inner wall of the annular groove (38) by rolling, and when the claw (19) descends, the guide curved surface (21) on the claw part contacts the clamping rod (39), so that the clamping rod (39) is engaged with the clamping groove (20). The tray assembly is used to increase the resistance of the core reel (5) when it rotates following the drum cover (4), so that the core reel (5) remains stationary.

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