# US 2021/0276282 A1 · System and method for producing structural profiles by means of continuous fiber braiding and structural profile obtained using said sytem and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276282 A1 - Document ID: US20210276282A1 - Status: Published application - Kind: A1 - Application number: 17/260,779 - Filed: 2019-07-16 - Published: 2021-09-09 - Earliest claimed: 2018-07-17 - Assignees: Zenit Polimeros Y Composites, S.L. - Applicants: Zenit Polimeros Y Composites, S.L. - Inventors: JUAN ALARCON LORENTE - Web page: https://patentgrep.com/patent/US20210276282A1 ## CPC - B29C 70/32: on a rotating mould, former or core - D04C 3/40: for making tubular braids by circulating strand supplies around braiding centre at equal distances - B29C 70/521: {and impregnating the reinforcement before the die} - D04C 3/00: Braiding or lacing machines - D04C 3/12: with means for introducing core threads - D04C 3/48: Auxiliary devices - B29C 70/24: oriented in at least three directions forming a three-dimensional [3D] structure - B29C 70/48: and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM] {, e.g. by vacuum} - B29L 2031/001: {Profiled members, e.g. beams, sections} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - D04C: BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE (machines for making soles from strips of material A43D29/00; cane working B27J1/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract The present invention relates to a system for producing structural profiles by means of continuous fibre braiding, which comprises: a machine for braiding fibres around a mandrel, the forward movement of which defines a longitudinal axis of the system; a module for injecting resin into the braided fibres; a module for curing the resin-impregnated fibres; a device for inserting and removing the mandrel; and a device for pulling the profile, wherein the braiding machine is a dual braiding machine connected to a respective fibre-reloading machine. ## Claims ### Claim 1 A system for producing structural profiles by means of continuous fibre braiding, comprising: a machine for braiding fibres around a mandrel, the forward movement of which defines a longitudinal axis of the system, a module for injecting resin into the braided fibres, a module for curing the resin-impregnated fibres, a device for inserting and removing the mandrel, and a device for pulling the profile, wherein said braiding machine is a dual braiding machine associated to a respective fibre-reloading machine. ### Claim 2 (depends on 1) The system according to claim 1 further comprising at least two dual braiding machines, each connected to a respective fibre-reloading machine. ### Claim 3 (depends on 1) The system according to claim 1, wherein each braiding machine has the ability to rotate about an axis perpendicular to the longitudinal axis of the system. ### Claim 4 (depends on 1) The system according to claim 1 further comprising a system for levelling the mandrel. ### Claim 5 (depends on 4) The system according to claim 4, wherein said system for levelling the mandrel comprises at least one electromagnetic brace. ### Claim 6 (depends on 5) The system according to claim 5, wherein said at least one electromagnetic brace comprises means for regulating the intensity of the electromagnetic field. ### Claim 7 (depends on 4) The system according to claim 4, wherein said system for levelling the mandrel comprises at least one support device. ### Claim 8 (depends on 7) The system according to claim 7, wherein said support device comprises a plurality of wheels. ### Claim 9 (depends on 1) The system according to claim 1 further comprising cutting means and a profile inspection device. ### Claim 10 (depends on 1) The system according to claim 1, wherein the system is configured to braid fibres in three dimensions. ### Claim 11 (depends on 1) The system according to claim 1, wherein the system is configured to braid glass fibres and/or carbon fibres. ### Claim 12 (depends on 1) The system according to claim 1, characterised in that said mandrel comprises at the ends thereof a plurality of perimetral grooves for positioning and attaching the fibres. ### Claim 13 (depends on 1) The system according to claim 1, wherein each fibre-reloading machine comprises a plurality of fibre-holding clamps. ### Claim 14 (depends on 13) The system according to claim 13, characterised in that the fibre-reloading machine comprises a plurality of pairs of rods arranged radially and in that each holding clamp is able to slide along the respective pair of rods, thus defining a fibre pick-up position and a fibre tying position. ### Claim 15 (depends on 16) A scaffolding comprising the structural profile according to claim 16. ### Claim 16 (depends on 17) A structural profile obtained by the method according to claim 17. ### Claim 17 (depends on 1) A method for producing structural profiles by means of continuous fibre braiding with a system according to claims 1, which comprises the following steps: a) Knotting or tying the ends of a first plurality of reels of fibres. b) Causing a mandrel to move forward until said knot of fibres is caught. c) with a dual braiding machine, beginning to braid the fibres, the ends of which are caught at the end of the mandrel, around said mandrel. d) Continuing the forward movement of the mandrel while the fibres are being braided around said mandrel. e) Impregnating with resin the fibres braided around the mandrel. f) Curing the resin-impregnated fibres. g) Continuing the forward movement of the mandrel while the fibres are being braided around said mandrel until a pulling device is reached. h) Pulling the cured fibres while maintaining the mandrel in a fixed position, which causes said braided and cured fibres to slide over the mandrel, wherein after the first plurality of reels of fibre has run out, the dual braiding machine previously loaded with a second plurality of reels of fibre is turned round and the process is repeated from step a) using the second plurality of reels of fibre.