CN-116093399-B - Chase cutting winding method and multi-station winding device

Abstract

The invention provides a chase cutting winding method and a multi-station winding device, wherein the chase cutting winding method comprises the steps that a first conveying line conveys a first material belt to a chase cutting station, and a second conveying line conveys a second material belt to a winding station; the winding mechanism positioned at the winding station acquires a second material belt to perform winding action, the winding mechanism positioned at the tracking and cutting station moves to a preparation position matched with the first material belt, when the winding mechanism positioned at the winding station completes the winding action, the winding mechanism positioned at the tracking and cutting station performs the tracking and cutting action, and when each winding mechanism on a winding wire completes the action of the station, the winding mechanism moves to a downstream station. The winding mechanism can chase the first material belt, so that the conveying of the first material belt and the operation of the winding mechanism do not need to be stopped when the first material belt is cut off, and the chase winding method can improve the continuity of the winding flow of the battery cell, thereby being beneficial to improving the efficiency of the winding process.

Inventors

• Request for anonymity
• Request for anonymity
• Request for anonymity
• Request for anonymity

Assignees

• 广东利元亨智能装备股份有限公司

Dates

Publication Date

20260512

Application Date

20211108

Claims (17)

1. 1. A chase cutting and winding method is characterized in that: The method for tracking and winding uses a winding wire, a first conveying line, a second conveying line and at least three winding mechanisms moving along the winding wire, wherein the winding wire is connected end to end, the winding wire comprises a tracking and cutting station and a winding station, and the winding station is positioned at the downstream of the tracking and cutting station; The chase cutting and winding method comprises the following steps: The winding mechanism positioned at the winding station acquires the second material belt and performs winding action, and the winding mechanism positioned at the tracking station moves to a preparation position matched with the first material belt; When the winding mechanism at the winding station completes the winding action, the winding mechanism at the tracking station performs the tracking action; after each winding mechanism on the winding line completes the action of the station where the winding mechanism is located, the winding mechanism moves to the downstream station; Wherein, the step of performing the chase cutting action comprises: The winding mechanism located at the preparation position moves along a follow-up cutting route along which the first material belt is consistent with a conveying route of the first material belt; When the winding mechanism for performing the follow-up cutting operation is synchronized with the first material tape, the winding mechanism cuts the first material tape, and the winding mechanism acquires the leading end of the first material tape located behind the cut position.
2. 2. The chase winding method of claim 1, wherein the winding wire further comprises a rubberizing station and a blanking station, the winding mechanism at the chase winding station being capable of sequentially passing through the winding station, the rubberizing station, and the blanking station back to the chase winding station, the chase winding method further comprising: The winding mechanism performs ending actions on the first material belt and the second material belt when moving from the winding station to the rubberizing station; the winding mechanism performs rubberizing action when moving to the rubberizing station; and the winding mechanism performs a blanking action when moving to the blanking station.
3. 3. The chase winding method of claim 1, wherein the winding wire further comprises a blanking station, the winding mechanism at the chase winding station being capable of sequentially passing through the winding station and the blanking station back to the chase winding station, the chase winding method further comprising: The winding mechanism performs ending action and rubberizing action after finishing winding action; and the winding mechanism performs a blanking action when moving to the blanking station.
4. 4. The chase winding method of claim 1, wherein the winding mechanism at the chase station performs a pre-roll operation as it moves toward the winding station.
5. 5. The chase winding method of claim 1, wherein the winding mechanism comprises a winding needle comprising a first needle body and a second needle body, the chase winding method further comprising: when the winding mechanism moves to the preparation position, the winding needle moves along the axial direction to avoid the first material belt.
6. 6. The chase winding method as recited in claim 5, wherein the step of the winding mechanism following the first web along a chase path comprises: the winding needle performs first movement along the axial direction so that the first material belt passes through between the first needle body and the second needle body; The winding mechanism performs a second motion along the conveying direction of the first material belt so that the speed of the winding mechanism is the same as the conveying speed of the first material belt; wherein the first movement and the second movement are performed simultaneously or the first movement is performed prior to the second movement.
7. 7. The chase winding method as recited in claim 5, wherein the winding mechanism further comprises a rotary cutter positioned between the first needle and the second needle, the rotary cutter comprising a blade portion and a pressing portion, the step of cutting the first web by the winding mechanism comprising: the rotary cutter rotates to enable the pressing part to be close to the second needle body, and the pressing part and the second needle body press the first material belt; The rotary cutter rotates to enable the blade part to be close to the first needle body, and the first needle body and the blade part cut off the first material belt.
8. 8. The chase winding method as recited in claim 1, wherein the chase winding method further comprises: Acquiring a first offset, wherein the first offset refers to the offset of the second material belt relative to the winding mechanism; the winding mechanism motion is controlled to counteract the first offset.
9. 9. The chase winding method as recited in claim 1, wherein the first conveyor line comprises two diaphragm conveying units and one first pole piece conveying unit, the chase winding method further comprising: The diaphragm conveying unit provides a diaphragm, and the first pole piece conveying unit provides a first pole piece; Acquiring a second offset, wherein the second offset refers to the offset of the diaphragm relative to the first pole piece; controlling the diaphragm movement to counteract the second offset; attaching two diaphragms to two sides of the first pole piece respectively to form a first material belt; and conveying the first material belt to the tracking and cutting station.
10. 10. The chase winding method as recited in claim 9, wherein the step of routing the first web to the chase station comprises: cutting off the first material belt; sticking a protective adhesive at the cutting position to reconnect the first material belt; the stuck first material belt is sent to the follow-up cutting station; When the protective adhesive is adhered, a gap is reserved between two sections of the first material belt, and the cutting position in the step of carrying out the chase cutting is consistent with the position of the gap.
11. 11. A multi-station winding apparatus, comprising: The winding wire is connected end to end, comprises a tracking and cutting station and a winding station, and is positioned at the downstream of the tracking and cutting station; The first conveying line is used for conveying a first material belt to the chase cutting station; a second conveyor line for conveying a second web of material to the winding station; At least three winding mechanisms movable along the winding line; The winding mechanism at the chase cutting station is configured to move to a preparation position that is adapted to the first web; When the winding mechanism at the winding station completes the winding operation, the winding mechanism at the preparation position moves along a follow-up line following the first material belt, and the follow-up line is consistent with the conveying line of the first material belt.
12. 12. The multi-station winding device of claim 11, wherein the winding wire further comprises a rubberizing station and a blanking station, the winding mechanism positioned at the tracking and cutting station can sequentially pass through the winding station, the rubberizing station and the blanking station to return to the tracking and cutting station, a tail-ending mechanism for ending is arranged between the winding station and the rubberizing station, and the rubberizing station is provided with a rubberizing mechanism for rubberizing.
13. 13. The multi-station winding device of claim 11, wherein the winding wire further comprises a blanking station, the winding mechanism at the tracking station can sequentially pass through the winding station and the blanking station to return to the tracking station, and the winding station is provided with a tail-end rubberizing mechanism for tail-end and rubberizing.
14. 14. The multi-station winding device of claim 11, wherein the first conveying line comprises two diaphragm conveying units and a first pole piece conveying unit, the diaphragm conveying units are used for providing diaphragms, the first pole piece conveying units are used for providing first pole pieces, and the first conveying line can respectively attach two diaphragms to two sides of the first pole pieces to form the first material belt.
15. 15. The multi-station winding apparatus of claim 14, wherein the first conveyor line includes a pre-cutting station for cutting the first web, the pre-cutting station being configured to form a gap and apply a protective adhesive at a cutting position of the first web.
16. 16. The multi-station winding apparatus according to claim 11, wherein the winding mechanism comprises a winding needle and a rotary cutter, the winding needle comprises a first needle body and a second needle body, the first needle body and the second needle body are used for clamping the first material belt, the rotary cutter is positioned between the first needle body and the second needle body, the rotary cutter comprises a blade part and a pressing part, the blade part is matched with the first needle body, the pressing part is matched with the second needle body, the rotary cutter can rotate to enable the blade part to cut off the first material belt, and the rotary cutter can rotate to enable the pressing part to press the first material belt.
17. 17. The multi-station winding apparatus of claim 11, wherein the winding mechanism is retractable in an axial direction to perform the deviation correction.

Description

Chase cutting winding method and multi-station winding device Technical Field The invention relates to the field of battery core manufacturing, in particular to a chase cutting winding method and a multi-station winding device. Background The battery cell can be manufactured by adopting a winding process, in the current winding method, the basic flow is to convey the pole piece to the winding needle, after the winding needle obtains the pole piece with enough length, the pole piece conveying and the winding of the winding needle are stopped, the pole piece is cut off, and the actions of winding, ending, rubberizing, blanking and the like of the winding needle are continued after the pole piece is cut off. The winding method uses a winder, which generally comprises a plurality of stations, each of which is responsible for a different action. Because the winding machine needs to be decelerated when the pole piece is cut off, the process of preparing the battery cell is incoherent and takes longer time, and the winding method becomes a bottleneck for improving the preparation efficiency of the battery cell in the lithium battery industry. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a chase winding method and a multi-station winding device, wherein the chase winding method can improve the continuity of the winding flow of the battery cells. According to the chase winding method provided by the invention, a winding wire, a first conveying line, a second conveying line and at least three winding mechanisms moving along the winding wire are used, the winding wire is connected end to end, the winding wire comprises a chase station and a winding station, and the winding station is positioned at the downstream of the chase station; The chase cutting and winding method comprises the following steps: a first conveying line conveys a first material belt to the tracking and cutting station, and a second conveying line conveys a second material belt to the winding station; The winding mechanism positioned at the winding station acquires the second material belt and performs winding action, and the winding mechanism positioned at the tracking and cutting station moves to a preparation position matched with the first material belt; When the winding mechanism at the winding station completes the winding action, the winding mechanism at the tracking station performs the tracking action; After each winding mechanism on the winding line completes the action of the station where the winding mechanism is located, the winding mechanism moves to the downstream station; Wherein, the step of performing the chase cutting action comprises: The winding mechanism located at the preparation position follows the first material belt to move; When the winding mechanism for performing the follow-up cutting operation is synchronized with the first material tape, the winding mechanism cuts the first material tape, and the winding mechanism acquires the leading end of the first material tape located behind the cut position. The chase winding method provided by the invention has the technical effects that the winding mechanism can chase the first material belt, so that the conveying of the first material belt and the operation of the winding mechanism do not need to be suspended when the first material belt is cut off, and the chase winding method can improve the continuity of the winding flow of the battery cell, thereby being beneficial to improving the efficiency of the winding process. According to some embodiments of the invention, the winding line further comprises a rubberizing station and a blanking station, the winding mechanism at the chase cutting station is capable of returning to the chase cutting station through the winding station, the rubberizing station and the blanking station in sequence, and the chase cutting winding method further comprises: The winding mechanism performs ending actions on the first material belt and the second material belt when moving from the winding station to the rubberizing station; the winding mechanism performs rubberizing action when moving to the rubberizing station; and the winding mechanism performs a blanking action when moving to the blanking station. According to some embodiments of the invention, the winding line further includes a blanking station, the winding mechanism located at the chase cutting station is capable of sequentially passing through the winding station and the blanking station to return to the chase cutting station, and the chase cutting winding method further includes: The winding mechanism performs ending action and rubberizing action after finishing winding action; And the winding mechanism performs a blanking action when being transferred to the blanking station. According to some embodiments of the invention, the winding mechanism at the chase cutting statio