A copper foil rolling mill with precise slitting device

Abstract

The invention discloses a copper foil rolling mill with a precise slitting device, which belongs to the field of copper foil rolling equipment, including a winding system, a slitting system and a collecting assembly. The slitting system is composed of a width slitting assembly and a length slitting assembly. The copper foil to be cut is slid into multiple copper foil strips after passing through the circular cutter and the support roller of the width slitting assembly. Each copper foil strip is then slid by the length slitting assembly. The length slitting assembly includes a cross-cutting knife and a pressing shell arranged on a knife holder. The knife holder is movably arranged between the left and right side plates of the frame. A driving mechanism is arranged between the end of the knife holder and the side plate. The driving mechanism is used to drive the knife holder to move. The cross-cutting knife is slidably arranged on the pressing shell, and the pressing shell is slidably arranged on a fixed shaft. When the copper foil strip is slid, the pressing shell first presses the copper foil strip, and the cross-cutting knife then slids the copper foil strip. The slid copper foil strip is collected by the collecting assembly. The invention solves the problem in the prior art that burrs are generated on the edge of the copper foil when the copper foil is sheared, which affects the quality of the copper foil.

Description

Technical Field

[0001] The invention belongs to the field of copper foil rolling, and in particular relates to a copper foil rolling mill with a precise slitting device. Background Art

[0002] Rolled copper foil is made by rolling and stretching copper blocks for many times. Rolled copper foil has more stable performance, higher strength and good ductility, and is suitable for fields with higher requirements on copper foil performance, such as high-frequency and high-speed PCB, flexible circuit board, etc.

[0003] When producing copper foil, the cast copper embryo or copper ingot is subjected to hot rolling, milling, cold rough rolling, annealing, pickling, cold finishing rolling, annealing, and shearing. The sheared copper strip is foil rolled to further reduce its thickness to meet the requirements of copper foil. Then it is surface treated to form the final copper foil coil, and finally the surface treated copper foil is sheared into the required size and shape. The final shearing is sheared by a slitting machine. During the shearing process, it is necessary to select a suitable disc knife or straight knife. During the slitting process, the wear of the knife, the insufficient installation accuracy of the knife, or the unstable tension during slitting may cause burrs on the edge of the copper foil. For example, when the slitting knife is used for too long and the blade becomes blunt, it cannot be cut cleanly when cutting the copper foil, but will produce fine metal burrs on the edge of the copper foil. Edge burrs not only affect the appearance quality of the copper foil, but in some high-precision electronic applications, such as printed circuit board (PCB) manufacturing, burrs may cause quality problems such as short circuits, affecting the performance and reliability of electronic components. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that burrs are generated on the edges of copper foil when the copper foil is sheared, which affects the quality of the copper foil, and to propose a copper foil rolling mill with a precise slitting device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a copper foil rolling mill with a precise slitting device, comprising a winding system, a slitting system and a collecting component, the winding system comprising an unwinding component, a tension component and a rolling component, the slitting system comprising a width slitting component and a length slitting component, the starting end of the copper foil to be cut is wound on the unwinding component, and then passes through the tension component, the rolling component and the slitting system in sequence, the cut copper foil produced after slitting by the slitting system is collected by the collecting component, the width slitting component comprises a circular cutter and a cutting shaft, the cutting shaft is rotatably arranged on the frame of the rolling mill, the circular cutter is fixed on the cutting shaft, a support rod is rotatably arranged under the cutting shaft, and the copper foil to be cut passes through the circular cutter The copper foil strip is cut into multiple strands after passing through the length slitting assembly and the support plate. The frame includes side plates, a support plate is arranged between the left and right side plates, the support plate corresponds to the length slitting assembly, the length slitting assembly includes a cross-cutting knife and a knife holder, the knife holder is movably arranged between the left and right side plates, the cross-cutting knife is arranged on the knife holder, a driving mechanism is arranged between the end of the knife holder and the side plate, the driving mechanism is used to drive the knife holder to move, the copper foil strip is cut into segments after passing through the length slitting assembly and the support plate, the knife holder includes a fixed shaft and a pressure shell, the fixed shaft is connected to the driving mechanism, the cross-cutting knife is slidably arranged on the pressure shell, the pressure shell is slidably arranged on the fixed shaft, when slitting the copper foil strip, the pressure shell first presses the copper foil strip, and the cross-cutting knife then slids the copper foil strip.

[0006] As a further description of the above technical solution: a waist-shaped hole is opened on the side plate, and the driving mechanism is arranged in the waist-shaped hole. The driving mechanism includes a compensation block, a mounting frame, and a sprocket chain assembly. The compensation block is a waist-shaped block, and the compensation block is adapted to the waist-shaped hole to form a waist-shaped track hole. The mounting frame and the compensation block are connected by a connecting block, and the mounting frame is fixed on the side plate. The sprocket chain assembly is arranged on the compensation block, and the chain is adapted to the waist-shaped track hole. A sliding block adapted to the waist-shaped track hole is fixedly provided at the end of the tool holder, and a connecting plate is fixedly provided on the chain link of the chain. A connecting shaft is provided at the end of the sliding block away from the tool holder, and the connecting shaft rotates on the connecting plate.

[0007] As a further description of the above technical solution: a conveying assembly is arranged between the support plate and the width slitting assembly, the conveying assembly is used to convey the copper foil strip, the conveying assembly includes a conveying roller and a conveying belt, and the horizontal conveying belt is located in the same plane as the support plate.

[0008] As a further description of the above technical solution: a socket plate is provided on the side of the fixed shaft, a plug-in rod is provided on the pressure shell, the plug-in rod is inserted into the socket plate, a spring is sleeved on the plug-in rod, and the spring is located between the socket plate and the pressure shell; the cross-cutter is slidably arranged on the side of the pressure shell, trigger shafts are fixedly arranged at both ends of the cross-cutter, and a trigger block corresponding to the trigger shaft is arranged on the side plate; when the cross-cutter passes through the trigger block, the trigger shaft drives the cross-cutter to move away from the fixed shaft; an adjustment frame is arranged on the side plate, the adjustment frame is arranged along the moving direction of the copper foil strip, and the trigger block is arranged on the adjustment frame.

[0009] As a further description of the above technical solution: a shaping roller group is arranged between the width slitting component and the length slitting component, and the shaping roller group includes a fixed roller and a pressing roller. The pressing roller and the support plate are located in the same horizontal plane. The copper foil strip passes through the fixed roller and the pressing roller and is then cut by the length slitting component.

[0010] As a further description of the above technical scheme: a horizontal adjustment hole and a vertical adjustment hole are opened on the side plate, three conveying rollers are arranged, namely an active roller, a horizontal adjustment roller, and a vertical adjustment roller, the conveyor belt is wound on the active roller, the horizontal adjustment roller, and the vertical adjustment roller, both ends of the horizontal adjustment roller are slidably arranged in the horizontal adjustment hole, and both ends of the vertical adjustment roller are slidably arranged in the vertical adjustment hole, and adjustment components are arranged at the ends of the horizontal adjustment roller and the vertical adjustment roller, and the adjustment components include adjustment blocks sleeved on the ends of the horizontal adjustment roller and the vertical adjustment roller, and an adjusting screw is rotatably arranged on the adjustment block, a rotating seat is fixedly arranged on the side plate, and the adjusting screw is threadedly assembled on the rotating seat, the adjusting screw corresponding to the horizontal adjustment roller is arranged along the length direction of the horizontal adjustment hole, and the adjusting screw corresponding to the vertical adjustment roller is arranged along the length direction of the vertical adjustment hole.

[0011] As a further description of the above technical solution: the collecting assembly includes a supporting frame arranged between the side plates, and a receiving box is arranged on the supporting frame, and the receiving box corresponds to the copper foil strip one by one.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] (1) The present invention uses a circular cutter to cut the copper foil and then uses a pressing roller to press and correct the entire copper foil strip, thereby compacting the fine metal burrs on the edge of the copper foil produced by cutting.

[0014] (2) The split copper foil tapes are cut in length direction by setting two copper foil tapes, so that they are spaced apart from each other to eliminate the influence between them. The cutting of the two is performed synchronously by transmission, so that the specifications and precision of the copper foil tapes cut and produced in the same batch are consistent.

[0015] (3) When cutting by length, the copper foil is first pressed by the pressing shell, and then cut by the cross-cutting knife, so that the copper foil does not curl when cutting, the cutting is more accurate, and the cutting edge is smoother. After the cutting is completed, the cross-cutting knife and the pressing shell can push the cut copper foil into the receiving box, and the whole process is smooth and fast; at the same time, the cross-cutting knife that circulates in sequence cuts the copper foil and presses the copper foil, so that the copper foil moves on the conveyor belt without sliding friction with the synchronous belt, further protecting the surface quality of the copper foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0018] Figure 3 It is a cross-sectional view of the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 It is a schematic diagram of the transmission structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the exploded state of the three-dimensional structure of the length cutting assembly and the transmission mechanism of the present invention;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the cross-cutting knife and the knife holder of the present invention.

[0023] Legend: 01, copper foil; 1, frame; 2, circular cutter; 3, cutting shaft; 4, fixed roller; 5, pressure roller; 6, side plate; 7, support plate; 8, cross-cutting knife; 9, knife frame; 10, fixed shaft; 11, pressure shell; 12, receiving plate; 13, plug-in rod; 14, spring; 15, trigger block; 16, adjustment frame; 17, compensation block; 18, mounting frame; 19, waist-shaped track hole; 20, connecting block; 21, chain 1. Sprocket; 22. Sprocket; 23. Sliding block; 24. Arc surface; 25. Semi-arc hole; 26. Straight hole; 27. Connecting plate; 28. Connecting shaft; 29. ​​Horizontal adjustment hole; 30. Vertical adjustment hole; 31. Active roller; 32. Horizontal adjustment roller; 33. Vertical adjustment roller; 34. Support frame; 35. Receiver box; 36. Gear set; 38. Trigger shaft; 39. Adjustment block; 40. Rotating seat; 41. Adjustment screw. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-7 The present invention provides a technical solution for a copper foil rolling mill with a precise slitting device:

[0026] A copper foil rolling mill with a precise slitting device comprises a winding system, a slitting system and a collecting assembly. The winding system comprises an unwinding assembly, a tension assembly and a rolling assembly. The starting end of the copper foil 01 to be cut is wound on the unwinding assembly and then passes through the tension assembly, the rolling assembly and the slitting system in sequence. The cut copper foil 01 produced after slitting by the slitting system is collected by the collecting assembly.

[0027] The slitting system includes a width slitting component and a length slitting component. The width slitting component includes a circular cutter 2 and a cutting shaft 3. The cutting shaft 3 is rotatably arranged on the frame 1 of the copper foil rolling mill. The cutting shaft 3 is connected to the main power of the copper foil rolling mill through a transmission mechanism. The circular cutter 2 is fixed on the cutting shaft 3. A support rod is rotatably arranged under the cutting shaft 3. The copper foil 01 to be cut passes through the circular cutter 2 and the support roller and is slit into multiple copper foil strips.

[0028] The width of the copper foil strip is adjusted by adjusting the spacing between adjacent circular cutters 2 on the cutting shaft 3. In this embodiment, the multiple strands of copper foil strips are divided into two paths, one path corresponds to each of the two adjacent copper foil strips, and each path corresponds to a length slitting assembly. A shaping roller group is arranged between the width slitting assembly and the length slitting assembly. The shaping roller group includes a fixed roller 4 and a pressure roller 5. The copper foil strip passes through the fixed roller 4 and the pressure roller 5 and is then cut by the length slitting assembly. The burrs on the edge of the copper foil strip cut by the width slitting assembly are trimmed by setting the shaping roller group.

[0029] The frame 1 includes a side plate 6, and two support plates 7 are arranged between the left and right side plates 6. The whole pressing roller 5 and the support plate 7 are located in the same horizontal plane. The support plate 7 corresponds to the length slitting component one by one. The length slitting component includes a cross-cutting knife 8 and a knife holder 9. The knife holder 9 includes a fixed shaft 10 and a pressure shell 11. A receiving plate 12 is arranged on the side of the fixed shaft 10. A plug-in rod 13 is arranged on the pressure shell 11. The plug-in rod 13 is penetrated on the receiving plate 12. A spring 14 is sleeved on the plug-in rod 13. The spring 14 is located between the receiving plate 12 and the pressure shell 11. The cross-cutting knife 8 is slidably arranged on the side of the pressure shell 11. Trigger shafts 38 are fixedly arranged at both ends of the cross-cutting knife 8. A trigger block 15 corresponding to the trigger shaft 38 is arranged on the side plate 6. When the cross-cutting knife 8 passes through the trigger block 15, the trigger shaft 38 drives the cross-cutting knife 8 to move away from the fixed shaft 10.

[0030] An adjustment frame 16 is provided on the side plate 6, and the adjustment frame 16 is provided along the moving direction of the copper foil strip. The trigger block 15 is slidably provided on the adjustment frame 16. In order to keep the trigger block 15 fixed at any position relative to the adjustment frame 16, a set screw is provided on the trigger block 15, and the trigger block 15 is locked by the set screw so that the trigger block 15 remains in a certain position relative to the adjustment frame 16. When the trigger shaft 38 contacts the trigger block 15 by adjusting the position of the trigger block 15, the position of the trigger shaft 38 relative to the adjustment frame 16 changes, so that the cutting position of the copper foil strip can be adjusted.

[0031] The tool holder 9 is movably arranged between the left and right side plates 6, and a driving mechanism is arranged between the end of the tool holder 9 and the side plate 6, and the driving mechanism is used to drive the tool holder 9 to move. A waist-shaped hole is opened on the side plate 6, and the driving mechanism is arranged in the waist-shaped hole. The driving mechanism includes a compensation block 17, a mounting frame 18 and a sprocket chain assembly. The compensation block 17 is a waist-shaped block, and the compensation block 17 is adapted to the waist-shaped hole to form a waist-shaped track hole 19. The mounting frame 18 is connected to the compensation block 17 through a connecting block 20, and the mounting frame 18 is fixed on the side plate 6. The sprocket chain assembly is arranged on the compensation block 17, and the chain 21 is adapted to the waist-shaped track hole 19. The end of the fixed shaft 10 of the tool holder 9 is fixedly provided with a sprocket chain assembly that is adapted to the waist-shaped track hole 19. The track hole 19 is adapted to a sliding block 23, a connecting plate 27 is fixedly arranged on the chain link of the chain 21, a connecting shaft 28 is arranged at one end of the sliding block 23 away from the tool holder 9, and the connecting shaft 28 rotates on the connecting plate 27, the compensation block 17 is adapted to form a waist-shaped track hole 19, and the waist-shaped track hole 19 is divided into two semi-arc holes 25 and two upper and lower straight holes 26, the inner side surface of the sliding block 23 is a horizontal side surface, and the outer side surface of the sliding block 23 is a circular arc surface 24, and the circular arc surface 24 is adapted to the side surface of the semi-arc hole 25. The sprocket chain assembly includes two sprockets 22, and the rotating shafts of the two sprockets 22 rotate on the compensation block 17, and the rotating shaft of one of the sprockets 22 is connected to the main power of the copper foil rolling mill through a transmission mechanism. In this embodiment, two tool holders 9 are arranged on each driving mechanism, and the two tool holders 9 are arranged symmetrically about the center of the compensation block 17.

[0032] A horizontal adjustment hole 29 and a vertical adjustment hole 30 are provided on the side plate 6. Three conveying rollers are arranged. The three conveying rollers are distributed in a triangle. The three conveying rollers are respectively an active roller 31, a horizontal adjustment roller 32, and a vertical adjustment roller 33. The conveyor belt is wound on the active roller 31, the horizontal adjustment roller 32, and the vertical adjustment roller 33. Both ends of the horizontal adjustment roller 32 are slidably set in the horizontal adjustment hole 29, and both ends of the vertical adjustment roller 33 are slidably set in the vertical adjustment hole 30. The ends of the horizontal adjustment roller 32 and the vertical adjustment roller 33 are both provided with adjustment components. The adjustment components include an adjustment block 39 sleeved on the ends of the horizontal adjustment roller 32 and the vertical adjustment roller 33, and an adjustment screw 41 is rotated on the adjustment block 39. A rotating seat 40 is fixedly provided on the side plate 6. The adjustment screw 41 is threadedly assembled on the rotating seat 40. The adjustment screw 41 corresponding to the horizontal adjustment roller 32 is arranged along the length direction of the horizontal adjustment hole 29, and the adjustment screw 41 corresponding to the vertical adjustment roller 33 is arranged along the length direction of the vertical adjustment hole 30. The collecting assembly includes a support frame 34 arranged between the side plates 6, and a receiving box 35 is arranged on the support frame 34. The receiving box 35 corresponds to the copper foil strip one by one.

[0033] In this embodiment, the transmission mode between each shaping roller group and its corresponding driving mechanism is as follows: Figure 5 As shown, the fixed roller 4 and the straightening roller 5 are driven by a gear set 36, wherein the straightening roller 5 and the rotating shaft of a sprocket 22 are driven by a first synchronous belt synchronous wheel set, the fixed roller 4 and the active roller 31 are driven by a second synchronous belt synchronous wheel set, and then the two straightening rollers 5 on the upper and lower paths are driven by a third synchronous belt synchronous wheel set. Driven by the main power of the copper foil rolling mill, the width slitting assembly, the shaping roller set, and the length slitting assembly move synchronously at the same time to slit the copper foil 01 to be cut.

[0034] Working principle: before slitting, first install and fix the copper foil 01 on the winding system, set the copper foil 01 on the unwinding assembly in sequence and pass through the tension assembly, rolling assembly, width slitting assembly, and length slitting assembly, and then adjust the relevant parameters, including the parameters of the rolling assembly to adjust the thickness of the copper foil 01, adjust the spacing of the circular cutter 2 of the width slitting assembly to adjust the slitting width of the copper foil 01, adjust the parameters of the shaping roller group, and repair the shape of the cut copper foil 01 in sequence; adjust the position of the trigger block 15 corresponding to the length slitting assembly to adjust the length of the copper foil 01. After everything is ready, start the main motor for trial operation, and formal production will be carried out after everything is normal in the trial operation.

[0035] During slitting, the copper foil strip is pressed into a specified thickness after passing through the rolling assembly, and then cut into multiple strands of copper foil strips by the circular cutter 2. The copper foil strip passes through the shaping roller group and is located above the conveyor belt. At this time, the conveyor belt rotates along the moving direction of the copper foil strip. During this process, when the pressure shell 11 of the tool holder 9 rotates and moves from the semi-arc hole 25 to the straight hole 26, the lower surface of the pressure shell 11 moves to a horizontal state and is completely pressed on the copper foil strip, so that the copper foil strip is pressed on the conveyor belt. With the movement of the chain 21 and the synchronous movement of the conveyor belt, the clamped copper foil strip follows It moves with the compression shell 11. During this process, the spring 14 is compressed. Since the lower surface of the compression shell 11 is in contact with the copper foil strip as a whole and the contact area is large, the compression shell 11 will not damage the copper foil strip. When the compression shell 11 drives the cross-cutting knife 8 to move to the cutting position, the trigger shafts 38 at both ends of the cross-cutting knife 8 drive the cross-cutting knife 8 to move and cut the copper foil strip under the action of the trigger block 15. Since the cutting position is in the same plane as the vertical surface of the compression shell 11 under the action of the compression shell 11, the cutting position will not be deformed or produce burrs. The cut copper foil 01 continues to move under the action of the compression shell 11 until the sliding block 23 moves to another semi-arc hole 25 so that the compression shell 11 and the cross-cutting knife 8 rotate along it. In this process, under the action of the spring 14, the cross-cutting knife 8 and the compression shell 11 push the cut copper foil 01 into the receiving box 35.

[0036] When the cross-cutting knife 8 and the pressure shell 11 of one length slitting component push the cut copper foil 01 to fall into the receiving box 35, the cross-cutting knife 8 and the pressure shell 11 of another length slitting component press the next copper foil strip to be cut, thereby realizing a cyclic and repeated cutting action. In addition, the length of the conveyor belt in the horizontal direction can be adjusted by adjusting the position of the horizontal adjustment roller 32 and the vertical adjustment roller 33, and the cutting length of the copper foil strip can be adjusted by coordinating the position of the trigger block 15. It should be noted that the support plate 7 is connected to the horizontal adjustment roller 32. Specifically, a rotating sleeve is rotatably provided on the rotating shaft of the horizontal adjustment roller 32, and the support plate 7 is fixedly connected to the rotating sleeve. The support plate 7 can be adjusted simultaneously with the horizontal adjustment roller 32. After the cross-cutting knife 8 drives the copper foil strip to move onto the support plate 7, the cross-cutting knife 8 completes the cutting and segmenting of the copper foil strip.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Within the technical scope disclosed by the present invention, technicians familiar with the technical field can make equivalent replacements or changes based on the technical scheme and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A copper foil rolling mill with a precision slitting device, characterized in that It comprises a winding system, a slitting system and a collecting component, wherein the winding system comprises an unwinding component, a tension component and a rolling component, and the slitting system comprises a width slitting component and a length slitting component. The starting end of the copper foil (01) to be cut is wound on the unwinding component, and passes through the tension component, the rolling component and the slitting system in sequence. The cut copper foil (01) produced after slitting by the slitting system is collected by the collecting component. The width slitting assembly comprises a circular cutter (2) and a cutting shaft (3); the cutting shaft (3) is rotatably arranged on a frame (1) of a rolling mill; the circular cutter (2) is fixed on the cutting shaft (3); a supporting roller is rotatably arranged below the cutting shaft (3); the copper foil (01) to be cut passes through the circular cutter (2) and the supporting roller and is slit into a plurality of copper foil strips; The frame (1) comprises a side plate (6), a support plate (7) is arranged between the left and right side plates (6), the support plate (7) corresponds to the length slitting assembly, the length slitting assembly comprises a cross-cutting knife (8) and a knife holder (9), the knife holder (9) is movably arranged between the left and right side plates (6), the cross-cutting knife (8) is arranged on the knife holder (9), a driving mechanism is arranged between the end of the knife holder (9) and the side plate (6), the driving mechanism is used to drive the knife holder (9) to move, the copper foil strip is cut into sections after passing through the length slitting assembly and the support plate (7), the knife holder (9) comprises a fixed shaft (10) and a pressure shell (11), the fixed shaft (10) is connected to the driving mechanism, the cross-cutting knife (8) is slidably arranged on the pressure shell (11), the pressure shell (11) is slidably arranged on the fixed shaft (10), when the copper foil strip is cut, the pressure shell (11) first presses the copper foil strip, and the cross-cutting knife (8) then cuts the copper foil strip; A receiving plate (12) is provided on the side of the fixed shaft (10), a plug-in rod (13) is provided on the pressure shell (11), the plug-in rod (13) is inserted into the receiving plate (12), a spring (14) is sleeved on the plug-in rod (13), and the spring (14) is located between the receiving plate (12) and the pressure shell (11); the cross-cutting knife (8) is slidably arranged on the side of the pressure shell (11), a trigger shaft (38) is fixedly arranged at both ends of the cross-cutting knife (8), a trigger block (15) corresponding to the trigger shaft (38) is provided on the side plate (6), when the cross-cutting knife (8) passes through the trigger block (15), the trigger shaft (38) drives the cross-cutting knife (8) to move away from the fixed shaft (10), an adjustment frame (16) is provided on the side plate (6), the adjustment frame (16) is arranged along the moving direction of the copper foil strip, and the trigger block (15) is arranged on the adjustment frame (16); A shaping roller group is arranged between the width slitting assembly and the length slitting assembly, the shaping roller group comprising a fixed roller (4) and a sizing roller (5), the sizing roller (5) and the support plate (7) are located on the same horizontal plane, and the copper foil strip passes through the fixed roller (4) and the sizing roller (5) and is then cut by the length slitting assembly.

2. A copper foil rolling mill with a precision slitting device according to claim 1, characterized in that: The side plate (6) is provided with a waist-shaped hole, the driving mechanism is arranged in the waist-shaped hole, and the driving mechanism comprises a compensation block (17), a mounting frame (18), and a sprocket chain assembly. The compensation block (17) is a waist-shaped block, the compensation block (17) is adapted to the waist-shaped hole to form a waist-shaped track hole (19), the mounting frame (18) and the compensation block (17) are connected by a connecting block (20), the mounting frame (18) is fixed on the side plate (6), the sprocket chain assembly is arranged on the compensation block (17), the chain (21) is adapted to the waist-shaped track hole (19), a sliding block (23) adapted to the waist-shaped track hole (19) is fixedly arranged at the end of the tool holder (9), a connecting plate (27) is fixedly arranged on the chain link of the chain (21), a connecting shaft (28) is arranged at the end of the sliding block (23) away from the tool holder (9), and the connecting shaft (28) rotates on the connecting plate (27).

3. The copper foil rolling mill with a precision slitting device according to claim 1, characterized in that: A conveying assembly is provided between the support plate (7) and the width slitting assembly, the conveying assembly being used to convey the copper foil strip, the conveying assembly comprising a conveying roller and a conveying belt, and the conveying belt in the horizontal direction is located in the same plane as the support plate (7).

4. A copper foil rolling mill with a precision slitting device according to claim 3, characterized in that: The side plate (6) is provided with a horizontal adjustment hole (29) and a vertical adjustment hole (30). The conveying rollers are provided with three, namely, a driving roller (31), a horizontal adjustment roller (32), and a vertical adjustment roller (33). The conveying belt is wound on the driving roller (31), the horizontal adjustment roller (32), and the vertical adjustment roller (33). Both ends of the horizontal adjustment roller (32) are slidably arranged in the horizontal adjustment hole (29), and both ends of the vertical adjustment roller (33) are slidably arranged in the vertical adjustment hole (30). The ends of the horizontal adjustment roller (32) and the vertical adjustment roller (33) are both An adjustment component is provided, the adjustment component comprises an adjustment block (39) sleeved on the ends of the horizontal adjustment roller (32) and the vertical adjustment roller (33), an adjustment screw (41) is rotatably provided on the adjustment block (39), a rotating seat (40) is fixedly provided on the side plate (6), the adjustment screw (41) is threadedly assembled on the rotating seat (40), the adjustment screw (41) corresponding to the horizontal adjustment roller (32) is arranged along the length direction of the horizontal adjustment hole (29), and the adjustment screw (41) corresponding to the vertical adjustment roller (33) is arranged along the length direction of the vertical adjustment hole (30).

5. The copper foil rolling mill with a precision slitting device according to claim 1, characterized in that: The collecting assembly comprises a support frame (34) arranged between the side plates (6), a receiving box (35) is arranged on the support frame (34), and the receiving box (35) corresponds to the copper foil strip one by one.

Images