Battery foil reverse winding positioning and shearing device

Abstract

The utility model provides a battery foil reverse winding positioning shearing mechanism, including body assembly, body assembly includes slitting assembly, fixing piece and knife groove roll, the knife groove roll is rotated and installed on the fixing piece through the pivot, and slitting assembly is distributed between the knife groove roll and the fixing piece, and moves between the knife groove roll and the fixing piece, slitting assembly includes shell, telescopic link and slitting head, the side of shell is equipped with the opening corresponding with the section of knife groove roll, telescopic link is set up in shell, and one end of telescopic link is installed with slitting head, and slitting head corresponds with the knife groove roll, and telescopic link is used for elongation and contraction, and still distribute in the shell have spiral lifting support, one end of spiral lifting support is installed with the butt joint, and the butt joint is opposite with the knife groove roll. Realize the effect of automatic control to slitting device, reduce manual labour, realize accurate control.

Description

Technical Field

[0001] This utility model relates to a battery foil rewinding, positioning, and shearing device. Background Technology

[0002] In the battery manufacturing industry, battery foil serves as a crucial carrier for electrode materials, and its processing precision directly impacts the performance and safety of battery products. Particularly in the roll-to-roll production of conductive foils such as copper and aluminum foil, the rewinding and positioning shearing process has a decisive influence on the dimensional accuracy and edge quality of the final product. Traditional shearing equipment has revealed two prominent technical shortcomings in actual operation:

[0003] First, the positioning mechanism suffers from significant instability. Due to tension fluctuations in the battery foil during high-speed operation, coupled with accumulated errors in the mechanical clearance of the transmission system, lateral shifts occur during foil cutting. This shift not only causes the cutting position deviation to exceed the allowable range but also leads to defects such as burrs or tears on the foil edges. More seriously, the mechanical connections of the existing positioning mechanism are prone to wear and loosening under long-term high-frequency vibration conditions, further exacerbating the degradation of positioning accuracy.

[0004] Secondly, the parameter adjustment system of existing equipment is cumbersome to operate and its accuracy is difficult to guarantee. When dealing with battery foil products of different thicknesses and materials, operators need to frequently adjust the clearance between the cutting roller and the slitting head. Traditional adjustment methods rely on manually tightening multiple bolts to achieve positioning. This discrete adjustment method cannot guarantee the synchronization of each adjustment point, nor can it achieve micron-level precision control. Especially when changing product specifications, it often requires a long downtime for debugging, severely restricting the production line's flexible production capabilities.

[0005] Therefore, a battery foil rewinding, positioning, and shearing device is needed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a battery foil rewinding and positioning shearing device, which achieves automatic control of the slitting device, reduces manual labor, and achieves precise control. This purpose of this utility model is achieved as follows:

[0007] This utility model proposes a battery foil rewinding positioning and shearing device, including a main body assembly. The main body assembly includes a slitting component, a fixing component, and a grooved roller. The grooved roller is rotatably mounted on the fixing component via a preset rotating shaft. The slitting component is distributed between the grooved roller and the fixing component and moves between the grooved roller and the fixing component. The slitting component includes a housing, a telescopic rod, and a slitting head. One side of the housing has an opening corresponding to the cross-section of the grooved roller. The telescopic rod passes through the housing, and one end of the telescopic rod is equipped with a slitting head. The slitting head corresponds to the grooved roller. The telescopic rod is used for extension and retraction. A spiral lifting bracket is also distributed inside the housing. One end of the spiral lifting bracket is equipped with an abutment joint, which abuts against the grooved roller.

[0008] Furthermore, the slitting assembly is fitted onto a preset rotating shaft, and the slitting assembly is fixed to the fixing member by an electric telescopic bracket, which is used to drive the slitting assembly to move between the groove roller and the fixing member.

[0009] Furthermore, the outer shell is fixedly connected to the electric telescopic bracket by bolts, and a preset motor is installed at one end of the electric telescopic bracket to drive the electric telescopic bracket to move left and right.

[0010] Furthermore, the spiral lifting bracket is provided in two parts, each including a lifting rod, an abutment joint, and a screw. The lifting rod is a movable parallelogram structure. One end of the lifting rod is fixed to the inside of the outer casing by bolts, and the other end of the lifting rod is fixed to an abutment joint by bolts. The screw passes through the lifting rod and has a preset thread. The lifting rod has a positive thread and a negative thread that match the preset thread, which are used to change the parallelogram structure according to the rotation of the screw to control the height of the abutment joint.

[0011] Furthermore, a rotating handle is installed on one side of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by cooperating the cutting component with the spiral lifting bracket, precise positioning and cutting are achieved by utilizing the adjustable abutment structure and electric drive, which solves the problems of insufficient positioning stability and cumbersome adjustment of traditional devices, and has the advantages of improving positioning accuracy and convenient adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a battery foil rewinding, positioning, and shearing device.

[0014] In the figure: 100, main body assembly; 110, cutting groove roller; 120, fixing part; 130, spiral lifting bracket; 200, slitting assembly; 210, telescopic rod; 220, slitting head; 230, lifting rod; 240, abutment joint; 250, rotating handle; 260, screw; 270, electric telescopic bracket. Detailed Implementation

[0015] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0016] In traditional battery foil rewinding and positioning shearing systems, the contact stability between the slitting component 200 and the grooved roller 110 is affected by dynamic errors in the transmission system and material tension fluctuations, causing the lateral offset of the foil to exceed the process tolerance range. The gap adjustment between the slitting head 220 and the grooved roller 110 relies on the coordinated operation of multiple sets of mechanical fasteners, requiring repeated calibration of the positioning reference point during adjustment, resulting in prolonged equipment downtime. The system's rigid support structure lacks a dynamic compensation mechanism, causing the slitting component 200 to experience micron-level displacement during high-speed operation, directly affecting the flatness of the sheared surface.

[0017] For example, in continuous slitting of ultra-thin copper foil, when the foil travels at a speed of 120 meters per minute, the accumulated radial runout error of the drive roller causes the slitting trajectory to deviate from the design path by more than 0.3 millimeters. Operators must manually tighten four sets of positioning bolts while the equipment is running to correct the position of the slitting head 220, with each adjustment taking more than 15 minutes. Insufficient rigidity of the slitting assembly 200's support structure causes resonance, resulting in fluctuations in the contact pressure between the slotted roller 110 and the slitting head 220 exceeding 20% ​​of the set value, leading to periodic burrs on the foil edges.

[0018] If the above problems are not addressed, the serrated defects on the sheared surface will cause the risk of incomplete plating in the electrode coating process, directly affecting the ion transport efficiency of the battery electrode. Repeated calibration of the slitting parameters will cause the overall equipment efficiency to drop below 65% of the design value, while increasing the probability of abnormal tool wear. The cumulative positioning error of the foil will cause interlayer misalignment in the subsequent winding process, ultimately increasing the probability of internal short circuits in the battery cell by two orders of magnitude.

[0019] Faced with the above problems, this application first analyzes the core contradiction of the traditional shearing device and finds that the insufficient dynamic stability of the slitting component 200 is due to the passive rigid constraint of the support structure, while the difficulty in gap adjustment is related to the lack of composite degrees of freedom of the actuator.

[0020] In response, this application proposes a battery foil rewinding, positioning, and shearing device, please refer to [link / reference]. Figure 1The system includes a main body assembly 100, which includes a slitting assembly 200, a fixing member 120, and a grooved roller 110. The grooved roller 110 is rotatably mounted on the fixing member 120 via a preset rotating shaft. The slitting assembly 200 is distributed between the grooved roller 110 and the fixing member 120 and moves between them. The slitting assembly 200 includes a housing, a telescopic rod 210, and a slitting head 220. One side of the housing has an opening corresponding to the cross-section of the grooved roller 110. The telescopic rod 210 passes through the housing and is fitted with a slitting head 220 at one end. The slitting head 220 corresponds to the grooved roller 110. The telescopic rod 210 is used for extension and retraction. A spiral lifting bracket 130 is also distributed inside the housing. One end of the spiral lifting bracket 130 is fitted with an abutment 240, which abuts against the grooved roller 110.

[0021] It should be noted that the slitting assembly 200 is distributed between the grooved roller 110 and the fixing member 120, and its movement between the grooved roller 110 and the fixing member 120 means that the slitting assembly 200 is positioned in the area between the grooved roller 110 and the fixing member 120, and can be translated along the space between them. Specifically, this can be achieved using a guide rail or slide rail structure. By moving the position of the slitting assembly 200, the contact area between the slitting head 220 and the grooved roller 110 is adjusted, thereby adapting to different slitting requirements. The opening on one side of the outer casing corresponding to the cross-section of the grooved roller 110 means that the side of the outer casing facing the grooved roller 110 has a notch whose shape matches the cross-section of the grooved roller 110. Specifically, this can be achieved using contour machining or laser cutting. The opening guides the precise alignment of the slitting head 220 and the grooved roller 110, reducing deviations caused by misalignment during the cutting process. The telescopic rod 210, inserted into the outer casing, extends through the interior of the casing along its axial direction. This can be achieved using a hydraulic or electric push rod. The linear movement of the telescopic rod 210 directly drives the slitting head 220 to move closer to or further away from the groove roller 110, enabling rapid gap adjustment. The spiral lifting bracket 130 has an abutment joint 240 at one end, meaning the end of the bracket has a support component that contacts the surface of the groove roller 110. This can be achieved using a screw 260 driving the lifting platform. The rigid contact between the abutment joint 240 and the groove roller 110 creates a reaction force support, preventing component displacement due to vibration or external forces during slitting. The spiral lifting bracket 130 is located inside the outer casing, meaning it is installed within the casing's internal space. This can be achieved using bolt fixing or welding. The parallelogram structure of the bracket, combined with the rotation of the screw 260, changes the height, thereby precisely controlling the vertical position of the slitting head 220.

[0022] It should be noted that the slitting assembly 200 is fitted onto a preset rotating shaft, and the slitting assembly 200 is fixed to the fixing member 120 via an electric telescopic bracket 270. The electric telescopic bracket 270 is used to drive the slitting assembly 200 to move between the groove roller 110 and the fixing member 120. The outer shell is fixedly connected to the electric telescopic bracket 270 by bolts, and a preset motor is installed at one end of the electric telescopic bracket 270 to drive the electric telescopic bracket 270 to move left and right. Two spiral lifting brackets 130 are provided. Each spiral lifting bracket 130 includes a lifting rod 230, an abutment joint 240, and a screw 260. The lifting rod 230 has a movable parallelogram structure. One end of the lifting rod 230 is fixed to the inside of the housing by bolts, and the other end of the lifting rod 230 is fixed to an abutment joint 240 by bolts. The screw 260 passes through the lifting rod 230 and has a preset thread. The lifting rod 230 has a positive thread and a negative thread that match the preset thread, which are used to change the parallelogram structure according to the rotation of the screw 260 to control the height of the abutment joint 240. A rotating handle 250 is installed on one side of the screw 260.

[0023] The core innovation of this application lies in the design of the slitting assembly 200 moving between the groove roller 110 and the fixing member 120, combined with the contour matching of the outer shell opening and the cross-section of the groove roller 110, to achieve precise alignment between the slitting head 220 and the groove roller 110; at the same time, by utilizing the parallelogram structure of the spiral lifting bracket 130 and the rigid support of the abutment 240, a stable slitting force transmission path is formed, thereby simplifying the adjustment operation while improving the positioning accuracy and anti-offset capability.

[0024] The working process and principle of this application are as follows: The battery foil rewinding positioning and shearing device includes a main body assembly 100, which consists of a slitting assembly 200, a fixing member 120, and a grooved roller 110. The grooved roller 110 is rotatably mounted on the fixing member 120 via a preset rotating shaft. The slitting assembly 200 is located between the grooved roller 110 and the fixing member 120 and can move between the two. The slitting assembly 200 consists of a housing, a telescopic rod 210, and a slitting head 220. An opening corresponding to the cross-section of the grooved roller 110 is opened on one side of the housing. The telescopic rod 210 passes through the housing, and a slitting head 220 is installed at one end of the telescopic rod 210. The slitting head 220 corresponds to the grooved roller 110. The telescopic rod 210 can extend and retract. A spiral lifting bracket 130 is also provided inside the housing, and an abutment 240 is installed at one end of the bracket. The abutment 240 abuts against the grooved roller 110.

[0025] During operation, the slitting assembly 200 moves between the grooved roller 110 and the fixing member 120 to achieve coarse adjustment of the slitting position. The telescopic function of the telescopic rod 210 is used to precisely adjust the gap between the slitting head 220 and the grooved roller 110 to adapt to different slitting parameter requirements. The opening on the outer shell corresponds to the cross-section of the grooved roller 110, allowing the side of the grooved roller 110 to contact the abutment 240, forming a stable support structure and preventing component displacement caused by external forces or vibrations during the slitting process, thus improving positioning stability. The movement of the slitting assembly 200, the extension and retraction of the telescopic rod 210, and the adjustment of the spiral lifting bracket 130 work together to achieve multi-dimensional precise control of the position of the slitting head 220. This design overcomes the cumbersome operation of traditional multi-bolt adjustment, simplifies the adjustment process, and improves adjustment accuracy and efficiency. At the same time, the design of the spiral lifting bracket 130 enhances the overall stability of the slitting assembly 200, effectively reducing slitting errors caused by equipment vibration or external forces.

[0026] As a preferred embodiment, the solution of this application is specifically implemented as follows:

[0027] The main body assembly 100 of the battery foil rewinding and positioning shearing device includes a slitting assembly 200, a fixing member 120, and a grooved roller 110. The fixing member 120 may be made of metal and has sufficient rigidity and stability. The grooved roller 110 is rotatably mounted on the fixing member 120 via a preset rotating shaft, which may be supported by a high-precision bearing to ensure the rotational accuracy of the grooved roller 110.

[0028] The slitting assembly 200 is located between the grooved roller 110 and the fixing member 120, and is movable between the two. The slitting assembly 200 includes a housing, a telescopic rod 210, and a slitting head 220. The housing may be made of a lightweight, high-strength material, such as aluminum alloy, to reduce the overall weight. One side of the housing has an opening corresponding to the cross-section of the grooved roller 110, the shape and size of which precisely match the cross-section of the grooved roller 110 to ensure alignment between the slitting head 220 and the grooved roller 110.

[0029] The telescopic rod 210 is installed inside the housing and can be telescopically extended or retracted using a cylinder or electric push rod mechanism. A slitting head 220 is mounted at one end of the telescopic rod 210. The slitting head 220 can be made of a high-hardness material, such as cemented carbide, to ensure cutting performance and service life. The slitting head 220 corresponds to the cutting groove roller 110, and the gap between them is adjusted by extending or retracting the telescopic rod 210.

[0030] The housing also contains spiral lifting brackets 130, which can employ two symmetrically arranged spiral lifting mechanisms. One end of each spiral lifting bracket 130 is fitted with an abutment 240, which abuts against the groove roller 110. The abutment 240 can be made of a wear-resistant material, such as ceramic or polymer composite material, to reduce friction with the groove roller 110.

[0031] During use, the slitting assembly 200 is first moved to make a coarse adjustment between the grooved roller 110 and the fixing member 120. Then, the gap between the slitting head 220 and the grooved roller 110 is precisely controlled by adjusting the extension length of the telescopic rod 210. At the same time, the spiral lifting bracket 130 can be adjusted in height as needed, and forms a stable support with the grooved roller 110 through the abutment joint 240, further improving the slitting accuracy.

[0032] Through the above solution, this application can effectively solve the problem of insufficient positioning accuracy in the battery foil rewinding and positioning shearing process. The movable design of the slitting assembly 200 between the groove roller 110 and the fixing member 120, combined with the telescopic function of the telescopic rod 210, enables rapid and precise adjustment of the gap between the slitting head 220 and the groove roller 110. The correspondence between the outer shell opening and the cross-section of the groove roller 110 ensures the precise alignment of the slitting head 220 and the groove roller 110, reducing shearing deviations caused by misalignment. The spiral lifting bracket 130 forms a stable support structure through the abutment joint 240 abutting against the groove roller 110, avoiding component displacement caused by external force or vibration during the slitting process and improving positioning stability.

[0033] Furthermore, this application also solves the problem of difficult gap adjustment between the slitting head 220 and the slotted roller 110. The extension and retraction of the telescopic rod 210 directly drives the position change of the slitting head 220, simplifying the cumbersome operation of traditional multi-bolt adjustment. The design of the spiral lifting bracket 130 further enhances the accuracy and reliability of the overall position adjustment of the slitting assembly 200. This multi-dimensional adjustment mechanism not only improves adjustment efficiency but also adapts to the slitting requirements of battery foils of different specifications, enhancing the adaptability and production efficiency of the equipment.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A battery foil rewinding, positioning, and shearing device, characterized in that, The device includes a main body assembly, which comprises a slitting component, a fixing component, and a grooved roller. The grooved roller is rotatably mounted on the fixing component via a preset rotating shaft. The slitting component is distributed between the grooved roller and the fixing component and moves between them. The slitting component includes a housing, a telescopic rod, and a slitting head. One side of the housing has an opening corresponding to the cross-section of the grooved roller. The telescopic rod passes through the housing, and one end of the telescopic rod is fitted with the slitting head, which corresponds to the grooved roller. The telescopic rod is used for extension and retraction. A spiral lifting bracket is also distributed inside the housing, and one end of the spiral lifting bracket is fitted with an abutment, which abuts against the grooved roller.

2. The battery foil rewinding, positioning, and shearing device according to claim 1, characterized in that, The slitting component is sleeved on a preset rotating shaft. The slitting component is fixed to the fixing member by an electric telescopic bracket. The electric telescopic bracket is used to drive the slitting component to move between the groove roller and the fixing member.

3. The battery foil rewinding, positioning, and shearing device according to claim 2, characterized in that, The outer shell is fixedly connected to the electric telescopic bracket by bolts. A preset motor is installed at one end of the electric telescopic bracket to drive the electric telescopic bracket to move left and right.

4. The battery foil rewinding, positioning, and shearing device according to claim 1, characterized in that, Two spiral lifting brackets are provided. Each spiral lifting bracket includes a lifting rod, an abutment, and a screw. The lifting rod is a movable parallelogram structure. One end of the lifting rod is fixed to the inside of the outer shell by bolts, and the other end of the lifting rod is fixed to an abutment by bolts. The screw passes through the lifting rod and has a preset thread. The lifting rod has a positive thread and a negative thread that match the preset thread, which are used to change the parallelogram structure according to the rotation of the screw to control the height of the abutment.

5. The battery foil rewinding, positioning, and shearing device according to claim 4, characterized in that, A rotating handle is installed on one side of the screw.

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