# US 11,078,820 B2 · Method for producing a honeycomb structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,820 B2 - Document ID: US11078820B2 - Status: Granted - Kind: B2 - Application number: 16/305,642 - Filed: 2017-05-24 - Published: 2020-10-29 - Granted: 2021-08-03 - Earliest claimed: 2016-06-09 - Assignees: Vitesco Technologies GmbH - Applicants: Continental Automotive GmbH - Inventors: Alf Niedmann; Emmanuel Kraus; Alexander Möseler; Ferdi Kurth; Harald Kraus - Web page: https://patentgrep.com/patent/US11078820B2 ## CPC - F01N 3/281: {Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates} - F01N 3/2026: {directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect} - F01N 3/2842: {specially adapted for monolithic supports, e.g. of honeycomb type (F01N3/2853 - F01N3/2871 take precedence)} - F01N 13/18: Construction facilitating manufacture, assembly, or disassembly - F01N 2330/04: Methods of manufacturing - F01N 2330/44: made of stacks of sheets, plates or foils that are folded in S-form - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) ## Abstract A method for producing a honeycomb structure having at least one at least partially structured metal foil, such that, in subregions of the honeycomb structure, a portion of the at least one metal foil is arranged spaced apart from an adjacently arranged portion of the at least one metal foil so as to be electrically insulated by an air gap therebetween, includes: providing the at least one metal foil; providing a forming plate having a bearing surface and having at least one first web structure extending from the bearing surface in an axial direction, the first web structure extending in a plane parallel to the bearing surface and defining the air gap to be produced in the honeycomb structure; and arranging the at least one metal foil on the bearing surface in the first web structure. ## Claims ### Claim 1 A method for producing a honeycomb structure (1) having at least one at least partially structured metal foil (2), such that, in subregions (3) of the honeycomb structure (1), a portion of the at least one metal foil (2) is arranged spaced apart from an adjacently arranged portion of the at least one metal foil (2) so as to be electrically insulated by an air gap (4) therebetween, the method comprising: providing the at least one metal foil (2); providing a forming plate (5) having a bearing surface (6) and having at least one first web structure (8) extending from the bearing surface (6) in an axial direction (7), the first web structure (8) extending in a plane (9) parallel to the bearing surface (6) and defining the air gap (4) to be produced in the honeycomb structure (1); and arranging the at least one metal foil (2) on the bearing surface (6) in the first web structure (8). ### Claim 2 (depends on 1) The method as claimed in claim 1, further comprising: connecting the forming plate (5) to the at least one metal foil (2), so as to interconnect the at least one metal foil (2) for permanent formation of the honeycomb structure (1); and then removing the forming plate (5) having the first web structure (8) from the honeycomb structure (1). ### Claim 3 (depends on 2) The method as claimed in claim 2, wherein the connecting step comprises soldering. ### Claim 4 (depends on 1) The method as claimed in claim 1, wherein the forming plate (5) has a plurality of first openings (10) extending through the forming plate (5) in the axial direction (7), wherein a support pin (11) is passable through at least one of the first openings (10) to as to arrange the honeycomb structure (1) according to the arranging step. ### Claim 5 (depends on 1) The method as claimed in claim 1, wherein, in the arranging step, use is additionally made of a winding spiral (12) having a spiral-shaped second web structure (13) that corresponds to the first web structure (8), wherein the second web structure (13) terminates in a flush manner in the axial direction (7) at a first end side (14) facing the forming plate (5), wherein the second web structure (13) has a pitch (16) at the second end side (15), wherein, proceeding from a center (17) of the second web structure (13), the second end side (15) continuously approaches the first end side (14) along the spiral-shaped windings (18), and wherein the winding spiral (12) has at least two pins (19), which extend further along the axial direction (7) proceeding from the center (17), the arranging step further comprising: receiving the at least one metal foil (2) between the at least two pins (19); continuously receiving, by rotation of the winding spiral (12), the at least one metal foil (2) into the second web structure (13); and then transferring the at least one metal foil (2) into the first web structure (8). ### Claim 6 (depends on 5) The method as claimed in claim 5, wherein the winding spiral (12) has driving pins (20) extending from the second web structure (13) at the first end side (14), the driving pins (20) extending into second openings (21) in the first web structure (8) and/or in the forming plate (5) and/or into first openings (10) in the forming plate (5). ### Claim 7 (depends on 6) The method as claimed in claim 6, wherein, in the arranging step, use is also made of a winding plate (22) having a slot (23) extending in a spiral-shaped manner and corresponding to the second web structure (13), wherein, during the rotation of the winding spiral (12), the winding spiral (12) sinks into the slot (23) with the second web structure (13) and starting with the center (17), and thus the at least one metal foil (2), arranged between the winding plate (22) and the winding spiral (12), is, along the axial direction (7), gradually introduced into the winding spiral (12) and then transferred into the first web structure (8). ### Claim 8 (depends on 1) The method as claimed in claim 1, wherein, prior to being arranged in the first web structure (8), the at least one at least partially structured metal foil (2) forms a multi-layered stack (24). ### Claim 9 (depends on 1) A winding device (25) for implementing the method as claimed in claim 1, comprising: the forming plate (5) having the first web structure (8). ### Claim 10 (depends on 9) The winding device (25) as claimed in claim 9, wherein the winding device (25) further comprises: at least one winding spiral (12) having a second web structure (13), and a winding plate (22).