Slitting mechanism for foil splitting machine

Abstract

The utility model relates to the technical field of foil slitting, and discloses a slitting mechanism for a foil slitting machine, which comprises a cutter groove roller, a cutter shaft capable of rotating is arranged on one side of the cutter groove roller, and a cutting component capable of moving along the axis direction of the cutter shaft is mounted on the cutter shaft; the cutting assembly comprises a mounting seat connected with the cutter shaft, a cutter holder is rotationally mounted on the mounting seat, and a cutter is arranged on the cutter holder; the cutter holder is of an integrated structure and can be used for installing the cutter and transmitting torque, the purpose of reducing machining accumulated errors can be achieved in the machining process, and therefore it is guaranteed that when the cutter rotates, radial run-out and left-right swing errors are controlled within an allowable range; in this way, in the slitting process, positioning is accurate and reliable, precision is high, the swing phenomenon cannot occur, the cutter can be independently and freely adjusted and replaced, the problems of copper powder, burrs, edge warping and the like are effectively solved, and the slitting requirements of ultrathin copper foils of various specifications are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to foil cutting technology field, concretely relates to a cutting mechanism for foil cutting machine. BACKGROUND

[0002] With the rapid development of new energy electric vehicles, the demand for negative electrode material lithium copper foil for power batteries supporting the new energy electric vehicles is more and more prosperous; in the process of battery production, the copper foil and other foils need to be cut into narrow strips of required width by a cutting machine first, and then subsequent production processes are carried out.

[0003] At present, there is no professional manufacturer of copper foil cutting machines in China that can manufacture copper foil cutting machines according to the quality characteristics of copper foil. The existing copper foil cutting machines on the market are only slightly modified on the basis of original aluminum foil or film cutting machines, and are used as copper foil cutting machines.

[0004] However, the quality characteristics of copper foil are completely different from those of aluminum foil and other materials, and the differences are large, and the requirements for the performance of the cutting machine are completely different, so in the process of using the existing cutting machine, burrs, pits, copper powder, scratches, edge lifting and wrinkles and other copper foil appearance defect problems are prone to occur, which causes great economic loss. Therefore, it is urgent to improve the cutting mechanism of the existing cutting machine to meet the production requirements of ultra-thin copper foil. CONTENT OF THE UTILITY MODEL

[0005] The problem to be solved by the utility model is to provide a cutting mechanism for a foil cutting machine. Under the support of the mounting seat, the driving motor drives the knife seat to rotate, the knife seat drives the cutting knife to rotate, and then the copper foil passing between the knife shaft and the knife groove roller is cut under the driving of the knife shaft. The knife seat in the device can be used for cutting knife installation and torque transmission, which can achieve the purpose of reducing the cumulative error of processing, so as to ensure that the radial runout and left-right swing error of the cutting knife during rotation is controlled within the allowable range, effectively solves the problems of copper powder, burr and edge lifting, and meets the cutting requirements of various specifications of ultra-thin copper foil.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0007] A cutting mechanism for a foil cutting machine, comprising a knife groove roller, one side of the knife groove roller is provided with a knife shaft capable of rotating, the knife shaft is provided with a cutting assembly capable of moving along the axis direction thereof;

[0008] The cutting assembly comprises a mounting seat connected with the knife shaft, a knife seat is rotatably installed on the mounting seat, a cutting knife is arranged on the knife seat, and a driving motor for driving the knife seat to rotate is arranged on the side of the mounting seat opposite to the cutting knife.

[0009] Optionally, the knife seat and the mounting base are connected through a bearing assembly, and one end of the knife seat is provided with an end cover for fixing the cutter on the knife seat.

[0010] Optionally, the mounting base is further provided with a protective cover on the side opposite to the driving motor, an opening is formed on the outer circumferential surface of the protective cover, and one side of the cutter passes through the opening to the outside of the protective cover.

[0011] Optionally, the knife seat comprises a shaft body, an inner hole for mounting the output end of the driving motor is formed in the shaft body, and a bearing mounting portion, a cover mounting portion, a shaft shoulder and a cutter body mounting portion are sequentially arranged on the outer circumferential surface of the shaft body.

[0012] Optionally, the output shaft of the driving motor extends into the inner hole, and one end of a fastener is connected with the output shaft of the driving motor through the end cover.

[0013] Optionally, the lower part of the mounting base is connected with the cutter shaft, and the upper part of the mounting base is connected with the knife seat.

[0014] Optionally, the lower part of the mounting base comprises two oppositely arranged clamping jaws, and a mounting hole is formed between the two clamping jaws, and the cutter shaft passes through the mounting hole.

[0015] Optionally, a connecting hole is formed in the end of each of the two clamping jaws, and a bolt assembly penetrates the connecting holes to connect the ends of the two clamping jaws.

[0016] Optionally, a speed reducer is arranged at one end of the cutter shaft, the output end of the speed reducer is connected with a transmission shaft, and one end of the transmission shaft is connected with the cutter shaft.

[0017] Beneficial effects

[0018] The knife seat in the utility model is of an integrated structure, which can be used for mounting the cutter and transmitting torque, and can reduce cumulative machining error in machining process, so that the radial runout and left-right swing error of the cutter during rotation are controlled within the allowable range; and the knife seat is driven by the driving motor arranged on the mounting base, and the mounting base is arranged on the cutter shaft, so that the positioning is accurate and reliable, the precision is high, and swing phenomenon does not occur during splitting, and the cutter can be individually adjusted and replaced, so as to effectively solve the problems of copper powder, burrs and edge lifting, and meet the splitting requirements of various specifications of ultra-thin copper foil. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model;

[0020] Figure 2It is the cutting assembly side view structure schematic diagram of the utility model;

[0021] Figure 3 It is the internal structure schematic diagram of the cutting assembly of the utility model;

[0022] Figure 4 It is the structure schematic diagram of the utility model knife seat;

[0023] Figure 5 It is the structure schematic diagram of the slitting machine;

[0024] Among them, 1, knife groove roller;2, knife shaft;201, connecting head;202, fixed seat;203, speed reducer;204, transmission shaft;3, mounting seat;301, clamping jaw;302, mounting hole;303, connecting hole;4, knife seat;401, shaft body;402, inner hole;403, bearing mounting portion;404, cover mounting portion;405, shaft shoulder;406, knife body mounting portion;5, cutting knife;6, end cover;7, driving motor;8, protective cover;9, bearing assembly;10, rack assembly;11, unwinding assembly;12, winding assembly;13, transmission assembly;14, slitting assembly;15, press wheel assembly;16, iron removal assembly;17, static electricity removal assembly. DETAILED DESCRIPTION

[0025] The utility model will be explained further in detail now in combination with the drawings and embodiment, these drawings are all simplified schematic diagram, only with schematic way shows the basic structure of the utility model, therefore it shows only the constitution related with the utility model.

[0026] Embodiment one

[0027] As Figure 1 Shown, a kind of foil slitting machine is used to slitting mechanism, including knife groove roller 1, knife shaft 2 and the cutting assembly of being set on knife shaft 2;Knife shaft 2 is located at one side of knife groove roller 1, and can rotate around its axis, to drive cutting assembly to carry out slitting to copper foil and so on foil material passing between knife groove roller 1 and knife shaft 2;Cutting assembly is installed on knife shaft 2 and can move along its axial direction, and a plurality of cutting assemblies can be set on a knife shaft 2 as needed, to slit foil into the width and number required.

[0028] Above-mentioned, one end of knife shaft 2 is provided with speed reducer 203, the output end of speed reducer 203 is connected with transmission shaft 204, and one end of transmission shaft 204 is connected with knife shaft 2.

[0029] Under the driving of external motor, after deceleration by speed reducer 203, knife shaft 2 is rotated by transmission shaft 204, so that cutting assembly swings to appropriate position, to facilitate the slitting of foil;Under the action of speed reducer 203, the high speed, low torque of external motor can be converted into the low speed, high torque required by knife shaft 2.

[0030] Two ends of the cutter shaft 2 are also respectively provided with a connecting head 201 and a fixing base 202. The connecting head 201 can be used to connect the cutter shaft 2 with the rack of the slitting machine. The fixing base 202 is sleeved outside the transmission shaft 204 to provide support for the transmission shaft 204 and ensure stable transmission of the output power of the speed reducer 203.

[0031] As shown in Figures 2-3 The cutting assembly comprises a mounting base 3 connected with the cutter shaft 2. The mounting base 3 is rotatably provided with a cutter seat 4. The cutter seat 4 is provided with a cutting knife 5. The side of the mounting base 3 opposite to the cutting knife 5 is provided with a driving motor 7 for driving the cutter seat 4 to rotate.

[0032] Under the support of the mounting base 3, the driving motor 7 drives the cutter seat 4 to rotate, and the cutter seat 4 drives the cutting knife 5 to rotate, thereby cutting the copper foil passing between the cutter shaft 2 and the grooved roller 1 under the driving of the cutter shaft 2.

[0033] The cutter seat 4 can be used for the installation of the cutting knife 5 and the transmission of torque, so as to reduce the cumulative error in the machining process, thereby ensuring that the radial runout and left-right swing error of the cutting knife 5 during rotation are controlled within the allowable range. The cutter seat 4 is driven by the driving motor 7 and is arranged on the mounting base 3, and the mounting base 3 is arranged on the cutter shaft 2. Thus, the positioning is accurate and reliable, the precision is high, and the cutting knife 5 can be freely adjusted and replaced, so as to effectively solve the problems of copper powder, burrs and edge lifting and meet the slitting requirements of various specifications of ultra-thin copper foil.

[0034] Further, the cutter seat 4 is connected with the mounting base 3 through a bearing assembly 9, and one end of the cutter seat 4 is provided with an end cover 6 for fixing the cutting knife 5 on the cutter seat 4.

[0035] The bearing assembly 9 comprises two angular contact ball bearings arranged oppositely and is arranged on the upper portion of the mounting base 3. One end of the cutter seat 4 can be embedded in the inner ring of the bearing assembly 9, and the outer ring of the bearing assembly 9 is fixedly connected with the mounting base 3. The cutting knife 5 is a slitting circular knife, which can be fixed through the end cover 6 after being sleeved on the cutter seat 4.

[0036] Further, the mounting base 3 is also provided with a protective cover 8 on the side opposite to the driving motor 7. An opening is formed in the outer circumferential surface of the protective cover 8, and one side of the cutting knife 5 passes through the opening to the outside of the protective cover 8.

[0037] The protective cover 8 is arranged between the cutter seat 4 and the mounting base 3 to cover the cutting knife 5 to avoid accidental injury. However, in order to ensure that the cutting knife 5 can normally perform the cutting work, the opening is formed in the circumferential surface of the protective cover 8, so that one side of the circumferential surface of the cutting knife 5 can pass through the opening to the outside of the protective cover 8 to perform the cutting work.

[0038] AsFigures 3-4 As shown, the tool holder 4 includes a shaft 401. The shaft 401 has an inner hole 402 for mounting the output end of the drive motor 7. The outer circumferential surface of the shaft 401 is provided with a bearing mounting part 403, a cover mounting part 404, a shoulder 405 and a tool mounting part 406 in sequence.

[0039] The tool holder 4 adopts an integral molding structure. The bearing mounting part 403 is used to embed the inner ring of the bearing assembly 9. One end of the bearing is positioned by the end face of the cover mounting part 404, and the other end is axially positioned by the mounting plate of the drive motor 7. The cover mounting part 404 is used to install the protective cover 8. After the protective cover 8 is fitted onto the cover mounting part 404, it is fixedly installed under the dual positioning of the end face of the shoulder 405 and the end face of the mounting seat 3. The tool mounting part 406 is used to install the cutter 5. One side of the cutter is also positioned by the end face of the shoulder 405, and the other side is axially positioned by the end cover 6, thereby completing the installation of the cutter 5 on the tool holder 4.

[0040] As described above, the output shaft of the drive motor 7 extends into the inner hole 402, and one end of the fastener can pass through the end cover 6 and connect to the output shaft of the drive motor 7. The fastener here is a screw, and a reserved hole is provided at the center of the end cover 6. When installing the end cover 6, one end of the screw passes through the reserved hole into the inner hole 402 and connects to the output shaft of the drive motor 7 in the inner hole 402. The screw and the output shaft of the drive motor 7 are fixedly connected by a threaded connection.

[0041] like Figures 1-3 As shown, the lower part of the mounting base 3 is connected to the cutter shaft 2, and the upper part of the mounting base 3 is connected to the cutter holder 4.

[0042] As described above, the lower part of the mounting base 3 includes two opposing grippers 301, and a mounting hole 302 is formed between the two grippers 301. The cutter shaft 2 passes through the mounting hole 302, thereby realizing the installation of the cutting component on the cutter shaft 2.

[0043] Each of the two grippers 301 has a connecting hole 303 at its end, and a bolt assembly passes through the connecting hole 303 to connect the ends of the two grippers 301.

[0044] The gap between the ends of the two jaws 301 can be adjusted by the bolt assembly, thereby controlling the clamping force of the jaws 301 on the cutter shaft 2. When the bolt assembly is loosened, the gap between the ends of the two jaws 301 increases, and the clamping force of the jaws 301 on the cutter shaft 2 decreases, allowing the mounting seat 3 to move along the axis of the cutter shaft 2. After the cutter shaft 2 moves to the designated position, the bolt assembly is tightened again, so that the mounting seat 3 can be fixed on the cutter shaft 2 and swing with the rotation of the cutter shaft 2.

[0045] In addition, in order to ensure that the cutter shaft 2 and the mounting base 3 can move synchronously, a contact plane can be provided on the outer circumferential surface of the cutter shaft 2, and a matching plane can be provided on the inner circumferential surface of the mounting hole 302. In this way, the shearing force between the contact planes can better ensure that the mounting base 3 can rotate synchronously with the cutter shaft 2.

[0046] Working principle:

[0047] Assembly of the cutting assembly: First, install the bearing assembly 9 into the upper part of the mounting base 3, and fix the drive motor 7 to one side of the mounting base 3; put the protective cover 8 on the cover mounting part 404 of the blade holder 4, and then put the blade holder 4 into the mounting base 3, so that its bearing mounting part 403 is embedded in the inner ring of the bearing assembly 9, and complete the installation of the protective cover 8 on the blade holder 4. At this time, the output shaft of the drive motor 7 is embedded in the inner hole 402; then put the cutter 5 on the blade mounting part 406, and then fix the end cover 6 to the end of the blade mounting part 406 with fasteners to complete the assembly of the cutting assembly; and the end cover 6 is fixedly connected to the output shaft of the drive motor 7 with fasteners to ensure that the blade holder 4, the cutter 5 and the end cover 6 can rotate synchronously with the output shaft of the drive motor 7.

[0048] After the cutting assembly is assembled, it is mounted on the cutter shaft 2 via the lower part of the mounting base 3. The drive motor 7 drives the cutter 5 to rotate, and the foil is cut under the drive of the cutter shaft 2.

[0049] In summary, this utility model improves upon the existing copper foil slitting mechanism, which suffers from poor positioning accuracy, easy runout and large lateral sway of the circular blade, and inconvenience in adjusting and replacing the blade. It also easily produces defects such as copper powder, burrs, and warping during slitting. The improvement involves using a disc blade shearing method. A separate cutting assembly is designed and manufactured, consisting of a mounting base 3, a blade holder 4, and a drive motor 7. The blade holder 4 serves both as the mounting point for the cutter 5 and as the torque transmitter. Designed as an integrated structure, it is fitted with a bearing assembly 9 and then mounted on the upper part of the mounting base 3, driven independently by the drive motor 7 (a micro motor can be used here). This reduces accumulated machining errors, ensuring that the radial runout error of the entire cutting assembly is controlled within 0.005mm and the lateral sway is 0±0.01mm during rotation. The cutting assembly is then mounted on the reference shaft (i.e., the blade shaft 2). This slitting method ensures accurate and reliable positioning with high precision, preventing any wobbling. Furthermore, the cutter 5 can be individually adjusted and replaced, effectively solving problems such as copper powder, burrs, and edge curling, thus meeting the slitting requirements of various specifications of ultra-thin copper foil.

[0050] Example 2

[0051] like Figure 5As shown, based on Embodiment 1, this utility model also proposes a foil slitting machine using the slitting mechanism, including a frame assembly 10, on which an unwinding assembly 11, a winding assembly 12, a transmission assembly 13, a slitting assembly 14, a pressure roller assembly 15, an iron removal assembly 16, and an antistatic assembly 17 are provided.

[0052] The frame assembly 10 serves as the mounting base, and the transmission assembly 13 and the slitting assembly 14 are disposed between the unwinding assembly 11 and the winding assembly 12, and the number of winding assemblies 12 can be multiple. Here, the transmission assembly 13 can be the grooved roller 1 in Embodiment 1, and the slitting assembly 14 can be the cutter shaft 2 in Embodiment 1 and the cutting assembly mounted on the cutter shaft 2.

[0053] Specifically, the foil is released from the unwinding assembly 11, and then slit into narrow strips of the required width by the cooperation of the transmission assembly 13 and the slitting assembly 14. The slit strips are then wound up by the winding assembly 12. During this process, the pressure roller assembly 15 ensures that the narrow strips can be smoothly wound onto the winding assembly 12, avoiding bulges and gaps; the iron removal assembly 16 removes iron filings adhering to the foil, and the antistatic assembly 17 eliminates static electricity on the foil, thereby improving the production quality of the product.

[0054] Among them, the foil slitting machine is a mature existing equipment, so the specific structure of its components will not be described in detail here.

[0055] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A slitting mechanism for a foil slitting machine, comprising a grooved roller (1), characterized in that: A rotatable cutter shaft (2) is provided on one side of the cutter roller (1), and a cutting assembly that can move along its axial direction is mounted on the cutter shaft (2). The cutting assembly includes a mounting base (3) connected to the cutter shaft (2), a cutter holder (4) is rotatably mounted on the mounting base (3), a cutter (5) is provided on the cutter holder (4), and a drive motor (7) for driving the cutter holder (4) to rotate is provided on the side of the mounting base (3) opposite to the cutter (5).

2. The slitting mechanism for a foil slitting machine according to claim 1, characterized in that: The blade holder (4) is connected to the mounting base (3) via a bearing assembly (9), and one end of the blade holder (4) is fitted with an end cap (6) for fixing the cutter (5) on the blade holder (4).

3. The slitting mechanism for a foil slitting machine according to claim 2, characterized in that: A protective cover (8) is also installed on the side of the mounting base (3) opposite to the drive motor (7). A notch is opened on the outer circumferential surface of the protective cover (8), and one side of the cutter (5) passes through the notch to the outside of the protective cover (8).

4. The slitting mechanism for a foil slitting machine according to claim 3, characterized in that: The tool holder (4) includes a shaft (401), and the shaft (401) has an inner hole (402) for mounting the output end of the drive motor (7). The outer circumferential surface of the shaft (401) is provided with a bearing mounting part (403), a cover mounting part (404), a shoulder (405) and a tool mounting part (406) in sequence.

5. The slitting mechanism for a foil slitting machine according to claim 4, characterized in that: The output shaft of the drive motor (7) extends into the inner hole (402), and one end of the fastener can pass through the end cap (6) and be connected to the output shaft of the drive motor (7).

6. The slitting mechanism for a foil slitting machine according to claim 1, characterized in that: The lower part of the mounting base (3) is connected to the cutter shaft (2), and the upper part of the mounting base (3) is connected to the cutter holder (4).

7. The slitting mechanism for a foil slitting machine according to claim 6, characterized in that: The lower part of the mounting base (3) includes two opposing jaws (301), and a mounting hole (302) is formed between the two jaws (301), and the cutter shaft (2) passes through the mounting hole (302).

8. The slitting mechanism for a foil slitting machine according to claim 7, characterized in that: Both of the jaws (301) have connecting holes (303) at their ends, and bolt assemblies pass through the connecting holes (303) to connect the ends of the two jaws (301).

9. The slitting mechanism for a foil slitting machine according to any one of claims 1-8, characterized in that: A speed reducer (203) is provided at one end of the cutter shaft (2), and a transmission shaft (204) is connected to the output end of the speed reducer (203), and one end of the transmission shaft (204) is connected to the cutter shaft (2).

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