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    CYLINDRICAL TUBE FORMATION
    4.
    发明公开
    CYLINDRICAL TUBE FORMATION 审中-公开

    公开(公告)号：EP4234849A3

    公开(公告)日：2023-10-18

    申请号：EP23177817.6

    申请日：2018-01-12

    申请人： Keystone Tower Systems, Inc.

    发明人： CARON, Michel

    IPC分类号： B21C37/12 ,  B21C37/06 ,  B21D39/02 ,  B23K31/02 ,  B29C53/78 ,  E04H12/08 ,  F16L9/16

    摘要： Tube forming methods can be used for efficient transition in the production of tubes having varying thickness. Material used to form consecutive tubes may have the same thickness along a separation plane separating a first discrete section from a second discrete section of the material, and the first discrete section and the second discrete section may each have varying thickness in a feed direction of the material. With such a thickness profile, the first discrete section of the material may be formed into a first cylinder having varying thickness and separated from the second discrete portion as the second discrete section is formed into a second cylinder having varying thickness. In particular, the transition between the first cylinder and the second cylinder may be achieved without scrap and/or interruption, resulting in cost-savings and improvements in production throughput associated with forming tubes having varying thickness.

    TAPERED STRUCTURE CONSTRUCTION
    8.
    发明公开
    TAPERED STRUCTURE CONSTRUCTION 审中-公开

    公开(公告)号：EP3974100A1

    公开(公告)日：2022-03-30

    申请号：EP21199834.9

    申请日：2012-09-20

    申请人： Keystone Tower Systems, Inc.

    发明人： SMITH, Eric D ,  TAKATA, Rosalind K ,  SLOCUM, Alexander H ,  NAYFEH, Samir A

    IPC分类号： B23P11/00 ,  B21C37/12 ,  B21C37/18

    摘要： A device and associated method for fabricating a frusto-conical structure, the frusto-conical structure having a virtual peak located at a point where a taper of the frusto-conical structure would decrease to zero if the frusto-conical structure were not truncated, the device comprising: a curving device controllable to impart curvature to a planar form of a stock; a feed system including an outer drive wheel pair of rollers and an inner drive wheel pair of rollers collectively operable to rotate the planar form of the stock and to translate the planar form of the stock in a feed direction from a source to the curving device as the planar form of the stock passes through the outer drive wheel pair of rollers and the inner drive wheel pair of rollers; and a control system in communication with the curving device and the feed system to deliver control signals to the curving device and the feed system to form the planar form of the stock into the frusto-conical structure, wherein the control system is configured to differentially drive the outer drive wheel pair of rollers relative to the inner drive wheel pair of rollers of the feed system to impart, to a portion of the stock that has not yet been deformed, a substantially rotational motion in a plane of the portion of the stock about the virtual peak of the frusto-conical structure such that each location on the portion of the stock that has not yet been deformed maintains a constant distance from the virtual peak throughout feeding.