Rewind system

Patent metadata

Field	Value
Publication number	US-12497256-B2
Application number	US-202318333365-A
Country	US
Kind code	B2
Filing date	Jun 12, 2023
Priority date	Jul 29, 2021
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A rewind system includes a conveyor assembly and a rewind apparatus. The conveyor assembly is configured to convey strips along a plurality of paths each configured to convey at least one strip. The rewind apparatus includes a drum and a plurality of shafts. The strip on each path is rewound around one of the shafts. Two adjacent shafts do not take up strips simultaneously. The drum is configured to rotate around an axis of the drum. The drum is configured to switch each of the strips on different paths from one shaft onto another shaft after the drum rotates by a predetermined angle.

First claim

What is claimed is:

1 . A rewind system, comprising:
a conveyor assembly, configured to convey strips along a plurality of paths, each path being configured to convey at least one of the strips; and a rewind apparatus, comprising a drum and a plurality of shafts, wherein;
the strip on each path is rewound around one of the shafts;
the plurality of shafts are configured such that any two adjacent shafts do not take up strips simultaneously and, when one shaft is in a strip take-up position, an adjacent shaft adjacent to the one shaft is positioned for strip removal or remains vacant; and
the drum is configured to rotate around an axis of the drum and, after rotating by a predetermined angle, switch each of the strips from one shaft onto another shaft.

2 . The rewind system according to claim 1 , wherein the plurality of shafts are distributed in a circular array around a rotation center of the drum.

3 . The rewind system according to claim 1 , wherein angles between connection planes that connect axes of any two adjacent shafts and the axis of the drum are equal, so that the strip on each path is able to be switched from one shaft onto an adjacent shaft when the drum rotates by the predetermined angle.

4 . The rewind system according to claim 3 , wherein an auxiliary roller is disposed on the drum, and the auxiliary roller is located between two adjacent shafts in a circumferential direction of the drum, and is configured to support the strip during switching.

5 . The rewind system according to claim 4 , wherein the auxiliary rollers is disposed on an angular bisector of one of the angles.

6 . The rewind system according to claim 4 , wherein the auxiliary roller is one of two adjacent auxiliary rollers that possess a common tangent, and the common tangent is tangent to the two auxiliary rollers at a side away from a center of the drum.

7 . The rewind system according to claim 6 , wherein in the circumferential direction of the drum, the common tangent intersects the shaft located between the two adjacent auxiliary rollers.

8 . The rewind system according to claim 6 , wherein in the circumferential direction of the drum, the shaft located between the two adjacent auxiliary rollers is located on a side that is of the common tangent and that is away from a rotation center of the drum, so as to ensure the strip to fit snugly with the shaft during switching.

9 . The rewind system according to claim 4 , wherein the auxiliary roller is one of a plurality of auxiliary rollers, and distances from axes of the plurality of auxiliary rollers to the axis of the drum are equal.

10 . The rewind system according to claim 1 , wherein the conveyor assembly comprises an idler roller configured to tension the strip on the path.

11 . The rewind system according to claim 1 , wherein the rewind apparatus further comprises a cleaning assembly configured to clean debris away from a surface of the strip.

12 . The rewind system according to claim 11 , wherein the cleaning assembly comprises a brush roller, and the strip is in contact with the brush roller during conveyance to clean the debris away from the surface of the strip.

13 . A rewind system, comprising:
a conveyor assembly, configured to convey strips along a plurality of paths, each path being configured to convey at least one of the strips; and a rewind apparatus, comprising:
a drum and a plurality of shafts, wherein the strip on each path is rewound around one of the shafts, two adjacent shafts do not take up strips simultaneously, the drum is configured to rotate around an axis of the drum, and the drum is configured to, after rotating by a predetermined angle, switch each of the strips from one shaft onto another shaft; and
a cleaning assembly configured to clean debris away from a surface of the strip.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Shi Qiwen
• Wang Han
• Yang Qiancheng

Classifications

• B65H2301/4148

  slitting · CPC title

• B65H18/08

  Web-winding mechanisms · CPC title

• H01M10/0409

  for cells with wound electrodes · CPC title

• B65H2408/2313

  with plurality of reel supporting or back-up rollers travelling around turret axis · CPC title

• B65H19/2215

  Turret-type with two roll supports · CPC title