公开(公告)号：EP1016509A2

公开(公告)日：2000-07-05

申请号：EP99125023

申请日：1999-12-15

申请人： PFA INC

发明人： SCANLAN MARK R

IPC分类号： B29C33/20 ,  B29C45/17 ,  B29C45/33 ,  B29C45/36 ,  F15B15/24 ,  F15B15/26 ,  B23Q1/26

CPC分类号： F15B15/24 ,  B29C33/20 ,  B29C45/1775 ,  B29C45/332 ,  B29C45/36 ,  F15B15/261

摘要： A threaded actuator is disclosed for positioning a core (5) in a molding apparatus (1). The threaded actuator includes a hydraulic cylinder unit (11) having a piston rod (20) connected to the core (5) for positioning thereof. The core is subjected to intense force during the molding process and this force is transmitted onto the piston rod (20) and hydraulic cylinder unit (11) and its support. The hydraulic cylinder (14) has a threaded nose (15) which is secured within a threaded opening (30) in a support (12). A rotatable threaded connecting member (31) is threaded between the threaded nose (15) and the threaded opening (30) of the support structure. The outer (32,33) and inner (34,35) threaded connections of the rotatable threaded connecting member (31) are of different thread configurations to form a differential thread assembly. The configurations may differ either in pitch and/or in the handedness of the threads. The differential threaded assembly provides for relative positioning of the hydraulic cylinder unit (11) and core relative to the mold. A preload system includes a wall on the cylinder and a wall on the rod for preloading of the locked rod and the supporting components. The hydraulic cylinder and the piston rod are formed with stop wall members which provide for controlled extension of the piston rod for preloading of the piston rod and the supporting structure. A locking unit (22-28) provides for locking of the rod (20) in an extended position.

摘要翻译： 公开了一种用于将芯（5）定位在模制设备（1）中的螺纹致动器。 所述螺纹致动器包括液压缸单元（11），所述液压缸单元具有连接到所述铁芯（5）上用于定位的活塞杆（20）。 芯在成型过程中受到很大的力，该力传递到活塞杆（20）和液压缸单元（11）及其支撑件上。 液压缸（14）具有螺纹鼻（15），其被固定在支撑件（12）中的螺纹开口（30）内。 可旋转的螺纹连接构件（31）在螺纹鼻（15）和支撑结构的螺纹开口（30）之间螺纹连接。 可旋转螺纹连接构件（31）的外（32,33）和内（34,35）螺纹连接具有不同的螺纹构造，以形成差速螺纹组件。 配置可以在螺纹的螺距和/或螺纹性方面不同。 差速螺纹组件提供液压缸单元（11）和芯相对于模具的相对定位。 预压系统包括气缸上的壁和杆上的壁，用于预加载锁定杆和支撑部件。 液压缸和活塞杆形成有止动壁构件，其设置用于活塞杆的受控延伸，用于预加载活塞杆和支撑结构。 锁定单元（22-28）用于将杆（20）锁定在延伸位置。