公开(公告)号：US08910500B2

公开(公告)日：2014-12-16

申请号：US14022908

申请日：2013-09-10

Applicant: National Research Council of Canada

Inventor： Javad Gholipour Baradari ,  Priti Wanjara ,  Eugen Marius Banu ,  Horatiu Daniel Chiriac

IPC: B21D26/02 ,  B21D9/15 ,  B21D26/045 ,  B21D26/033 ,  B21D26/043

CPC classification number: B21D26/033 ,  B21D26/043 ,  B21D26/045 ,  Y10T29/49805

Abstract: An end plunger for end feeding during a hydroforming process (such as tube hydroforming) has at least one releasable seal. The effect of the releasable seal is that it avoids pressurizing the blank in a nip area, thereby reducing friction and wear, and allowing increased end feeding with a given end feeding force. The releasable seal may be actuable, for sealing or releasing. The plunger may be modular or monolithic. A kit and method may incorporate the end plunger.

Abstract translation: 在液压成形过程（例如管液压成型）期间用于端部进给的端部柱塞具有至少一个可释放的密封。 可释放密封件的作用是避免了压区中的坯料加压，从而减少摩擦和磨损，并允许以给定的端部进料力增加末端进料。 可释放的密封件可以是致动的，用于密封或释放。 柱塞可以是模块化的或单块的。 套件和方法可以包括末端柱塞。