Methods of additively manufacturing tower structures with coiled polymer reinforcement members
A method of manufacturing a tower structure includes printing and depositing, via a printhead assembly of an additive printing system, one or more printed layers of a wall of the tower structure. The method also includes unwinding at least one continuous roll of a reinforcement material to form at least one continuous reinforcement ring member layer, the reinforcement material comprising a pultruded polymer material. Further, the method includes placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure. Moreover, the method includes printing and depositing, via the printhead assembly of the additive printing system, one or more additional printed layers of the wall of the tower structure atop the at least one continuous reinforcement ring member layer.
1. A method of manufacturing a tower structure, the method comprising:
printing and depositing, via a printhead assembly of an additive printing system, one or more printed layers of a wall of the tower structure;
securing a portion of at least one continuous roll of a reinforcement material to a fixture;
rotating the fixture about a central axis to unwind the at least one continuous roll of the reinforcement material to form the at least one continuous reinforcement ring member layer, the reinforcement material comprising a pultruded polymer material, the at least one continuous reinforcement ring member layer comprises one or more coils, the fixture comprising a plurality of arm members extending radially from the central axis, each arm member of the plurality of arm members comprising a locating guide for receiving and securing the one or more coils of the at least one continuous reinforcement ring member layer therein;
placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure; and
printing and depositing, via the printhead assembly of the additive printing system, one or more additional printed layers of the wall of the tower structure atop the at least one continuous reinforcement ring member layer.
2. The method of claim 1 , further comprising setting a position of the locating guides on one of the arm members by at least one of:
securing positioning pins of the locating guides into corresponding holes on one of the arm members; or
sliding the locating guides along one of the arm members to a desired radial location and securing the locating guides on one of the arm members at the desired radial location,
wherein setting the position of the locating guides on at least one of the arm members sets a desired dimension of the at least one continuous reinforcement ring member layer to correspond with a dimension of the tower structure.
3. The method of claim 1 , wherein the locating guides comprise a plurality of radially spaced retention features for receiving and securing one or more of the one or more coils of the at least one continuous reinforcement ring member layer therein.
4. The method of claim 3 , wherein the radially spaced retention features comprise at least one of slots, fasteners, grooves, protrusions, hooks, non-slip surfaces, or combinations thereof.
5. The method of claim 1 , further comprising:
removing a portion of the at least one continuous reinforcement ring member layer to form an opening therein; and
placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure.
6. The method of claim 2 , wherein the opening is positioned at a location of a door of the tower structure.
7. The method of claim 6 , further comprising heating the at least one continuous reinforcement ring member layer above its glass transition temperature to relieve built in stress before placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure with the opening being positioned at the location of the door of the tower structure.
8. The method of claim 1 , further comprising removing the at least one continuous reinforcement ring member layer from the fixture and subsequently placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure.
9. The method of claim 8 , further comprising securing a plurality of supports to the at least one continuous reinforcement ring member layer before placing the at least one continuous reinforcement ring member layer atop the one or more printed layers of the wall of the tower structure.
10. The method of claim 8 , wherein the locating guides remain in place after removing the at least one continuous reinforcement ring member layer from the fixture to maintain positioning of the one or more coils.
11. The method of claim 1 , further comprising:
forming the at least one continuous reinforcement ring member layer of a certain diameter that allows for multiple ring members to be formed therefrom; and
cutting the at least one continuous reinforcement ring member layer to form a plurality of individual ring members.
12. An assembly for manufacturing at least one continuous reinforcement ring member layer for reinforcing a structure, the assembly comprising:
one or more continuous rolls of a reinforcement material, the reinforcement material comprising a pultruded polymer material; and
a fixture secured to a portion of the one or more continuous rolls of the reinforcement material, the fixture comprising a plurality of arm members extending radially from a central axis, each arm member of the plurality of arm members comprising a locating guide secured thereto,
wherein the fixture is rotatable about a central axis to unwind the one or more continuous rolls of the reinforcement material to form the at least one continuous reinforcement ring member layer comprising one or more coils, and
wherein the locating guides are configured to receive and secure the one or more coils of the at least one continuous reinforcement ring member layer therein.
13. The assembly of claim 12 , wherein the plurality of locating guides comprise one or more positioning pins and the plurality of arm members comprise one or more corresponding holes for receiving the one or more positioning pins for setting a position of a respective locating guide on one of the arm members, thereby providing a desired dimension of the at least one continuous reinforcement ring member layer to correspond with a dimension of the structure.
14. The assembly of claim 13 , wherein the plurality of supports have at least one of an open loop configuration, a rod-shaped configuration, a closed loop configuration, or combinations thereof.
15. The assembly of claim 12 , wherein the plurality of locating guides are slidable along one of the arm members to set a desired radial location of the locating guides.
16. The assembly of claim 12 , wherein the plurality of locating guides comprise a plurality of radially spaced retention features for receiving and securing one or more of the one or more coils of the at least one continuous reinforcement ring member layer therein.