US 12,123,533 B2
Resin-tube end formation method and formation tool
Jun Yanagibayashi, Kyoto (JP); Kenichi Yasunaga, Kyoto (JP); Shinji Tanaka, Kyoto (JP); Shinya Imamura, Kyoto (JP); Ryo Hosono, Kyoto (JP); Hiromu Yamasaki, Kyoto (JP); and Koshi Abe, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Filed by SHIMADZU CORPORATION, Kyoto (JP)
Filed on Nov. 9, 2020, as Appl. No. 17/092,381.
Claims priority of application No. 2019-210691 (JP), filed on Nov. 21, 2019.
Prior Publication US 2021/0156503 A1, May 27, 2021
Int. Cl. F16L 47/14 (2006.01); B01L 3/00 (2006.01); B29C 57/00 (2006.01); F16L 13/007 (2006.01); F16L 13/02 (2006.01); F16L 47/02 (2006.01); G01N 30/60 (2006.01)
CPC F16L 47/02 (2013.01) [B01L 3/561 (2013.01); B01L 3/563 (2013.01); B29C 57/005 (2013.01); F16L 13/007 (2013.01); F16L 13/02 (2013.01); F16L 47/14 (2013.01); G01N 30/6026 (2013.01); B01L 2200/12 (2013.01); B01L 2200/141 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A resin-tube end formation method including:
preparing a resin tube having a cavity;
preparing a formation tool having a pressing surface and a projection that projects from the pressing surface and is insertable into the cavity of the resin tube,
the projection being a metal needle or a metal wire having an outer diameter corresponding to an inner diameter of the resin tube;
inserting the projection of the formation tool from an end of the resin tube into the cavity of the resin tube;
pressing the pressing surface of the formation tool against an end surface of the resin tube; and
transferring a shape of the pressing surface of the formation tool to the end surface of the resin tube by applying thermal energy to the end of the resin tube to form the end of the resin tube into a flange shape without closure of the cavity of the resin tube by the metal needle or the metal wire.