# US 12,120,828 B2 · Reel mechanism and winding device for flexible copper clad laminate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,828 B2 - Document ID: US12120828B2 - Status: Granted - Kind: B2 - Application number: 17/835,873 - Filed: 2022-06-08 - Published: 2023-07-06 - Granted: 2024-10-15 - Earliest claimed: 2021-12-31 - Assignees: AAC Technologies (Nanjing) Co., Ltd. - Applicants: AAC Technologies (Nanjing) Co., Ltd. - Inventors: Rui Pan; Hongyuan Wang; Yilan Zhang; Hezhi Wang - Web page: https://patentgrep.com/patent/US12120828B2 ## CPC - H05K 3/0044: {Mechanical working of the substrate, e.g. drilling or punching (H05K3/0008 takes precedence)} - H05K 1/0313: {Organic insulating material} - H05K 3/022: {Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates} - H05K 2201/0154: Polyimide - H05K 2201/0355: Metal foils - H05K 2203/1545: Continuous processing, i.e. involving rolls moving a band-like or solid carrier along a continuous production path - Y02P 70/10: Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A reel mechanism and a winding device for a flexible copper clad laminate includes a rotating roller, a winding belt wound on the rotating roller for winding the flexible copper clad laminate, first and second limit structures arranged one side of the winding belt away from the rotating roller. A space between the first limit structures and the second limit structures accommodates the flexible copper clad laminate. When the winding belt is wound with multiple layers outside the rotating roller, adjacent layers of the winding belt are spaced apart by the first and second limit structures. Since a protruding height of the first limit structures is equal to a protruding height of the second limit structures, and intervals between adjacent layers of a composite coil formed by the winding belt and the flexible copper clad laminate are equal, which avoids adhesion and copper foil surface oxidation. ## Claims ### Claim 1 A reel mechanism, comprising: a rotating roller; and a winding belt wound around a surface of the rotating roller; wherein the winding belt is configured for winding a flexible copper clad laminate; wherein the reel mechanism further comprises first limit structures and second limit structures; the first limit structures and the second limit structures are arranged on one side of the winding belt away from the rotating roller; the first limit structures are spaced apart from the second limit structures in an axial direction of the rotating roller; wherein the first limit structures and the second limit structures are arranged along a length direction of the winding belt; the first limit structures and the second limit structures protrude from a surface of the winding belt; a space between the first limit structures and the second limit structures is configured for accommodating the flexible copper clad laminate; when the winding belt is wound with at least two layers outside the rotating roller, adjacent layers of the winding belt are spaced apart by the first limit structures and the second limit structures. ### Claim 2 (depends on 1) The reel mechanism according to claim 1, wherein the first limit structures comprise at least two first limiters fixed on the one side of the winding belt away from the rotating roller and arranged along the length direction of the winding belt; the second limit structures comprise at least two second limiters fixed on the one side of the winding belt away from the rotating roller and arranged along the length direction of the winding belt; the first limiters and the second limiters protrude from the surface of the winding belt; a protruding height of the first limiters and a protruding height of the second limiters are in a range of 0.1 cm-1 cm. ### Claim 3 (depends on 2) The reel mechanism according to claim 2, wherein the protruding height of the first limiters is equal to the protruding height of the second limiters. ### Claim 4 (depends on 2) The reel mechanism according to claim 2, wherein an amount of the first limiters is equal to an amount of the second limiters, and the first limiters and the second limiters are respectively arranged on two sides of the winding belt. ### Claim 5 (depends on 2) The reel mechanism according to claim 2, wherein the first limiters are arranged at intervals; an interval between each two adjacent first limiters is in a range of 0.05 m-0.35 m; the second limiters are arranged at intervals; an interval between each two adjacent second limiters is in a range of 0.05 m-0.35 m. ### Claim 6 (depends on 2) The reel mechanism according to claim 2, wherein the first limiters and the second limiters are metal limiters. ### Claim 7 (depends on 6) The reel mechanism according to claim 6, wherein the first limiters and the second limiters are cage nuts. ### Claim 8 (depends on 1) The reel mechanism according to claim 1, wherein a thickness of the winding belt is in a range of 5 um-550 um. ### Claim 9 (depends on 1) A winding device for a flexible copper clad laminate, comprising: the reel mechanism according to claim 1; a driving component connected with the reel mechanism; and the flexible copper clad laminate stacked on the surface of the winding belt away from the rotating roller; wherein the driving component is connected with the rotating roller. ### Claim 10 (depends on 9) The winding device for the flexible copper clad laminate according to claim 9, wherein the flexible copper clad laminate comprises a metal foil and a film layer stacked on one side of the metal foil away from the winding belt; the film layer is a polyamic acid film or a liquid crystal polymer film.