公开(公告)号：US06386508B1

公开(公告)日：2002-05-14

申请号：US09587462

申请日：2000-06-05

Applicant: Fred Steil ,  Lawrence J. Navarre ,  Douglas Hugo

Inventor： Fred Steil ,  Lawrence J. Navarre ,  Douglas Hugo

IPC: F16K31143

CPC classification number: F15B11/0365 ,  B29C45/281 ,  F15B15/1466 ,  F15B2211/7056

Abstract: A pressurized-fluid-operated actuator has two piston surfaces for providing increased output force. The actuator includes a hollow piston that is divided into two inner chambers by a stationary inner dividing wall that is rigidly connected with a cylinder end wall. The piston has an outer diameter that is smaller than the inner diameter of the cylinder, and the piston carries three axially spaced sealing rings that define two axially-spaced annular chambers between the piston and the cylinder. Each of the annular chambers is in fluid communication with a respective port provided in the cylinder wall. Introduction of pressurized fluid into one port causes the fluid pressure to act on a single piston surface to retract the piston and rod, and introduction of pressurized fluid into the other port causes the fluid pressure to act on two axially-spaced piston surfaces to provide an increased output force without increasing the diameter of the cylinder and piston and without increasing the pressure of the fluid.

Abstract translation: 加压流体操作的致动器具有两个用于提供增加的输出力的活塞表面。 致动器包括中空活塞，其通过与气缸端壁刚性连接的固定内分隔壁分成两个内室。 活塞具有小于气缸内径的外径，并且活塞承载三个轴向隔开的密封环，其在活塞和气缸之间限定两个轴向隔开的环形室。 每个环形室与设置在气缸壁中的相应端口流体连通。 将加压流体引入一个端口导致流体压力作用在单个活塞表面上以缩回活塞和杆，并且将加压流体引入另一个端口，使得流体压力作用在两个轴向间隔的活塞表面上，以提供 增加输出力而不增加气缸和活塞的直径，而不增加流体的压力。

公开(公告)号：US5538415A

公开(公告)日：1996-07-23

申请号：US354175

申请日：1994-12-12

Applicant: William A. Reinhart ,  Lawrence J. Navarre

Inventor： William A. Reinhart ,  Lawrence J. Navarre

IPC: B22D17/20 ,  B22D17/26 ,  B29C45/17 ,  B29C45/64 ,  B29C45/76

CPC classification number: B29C45/1761 ,  B29C45/1751 ,  B29C2045/1768

Abstract: An injection molding machine is provided with an open frame specifically designed to avoid angular displacement of the stationary platen during the molding process. More particularly, the stationary platen and the supporting frame are configured to maintain a constant moment of inertia relative to the line of force acting on the platen during the clamp closed part of the cycle, so that it displaces linearly when force is applied. In addition, the frame is provided with integral support members to connect with the die height adjustment mechanism. The support members are positioned on the frame to minimize the distance of the open frame, thus minimizing the length of frame subject to deflection when the force is applied.

Abstract translation: 注射成型机设置有专门设计用于避免模制过程中静止压板角位移的开式框架。 更具体地，固定压板和支撑框架构造成在循环的夹紧闭合部分期间相对于在作用在压板上的力线上保持恒定的转动惯量，使得当施加力时其在线性移位。 此外，框架设置有与模具高度调节机构连接的整体支撑构件。 支撑构件定位在框架上以最小化开放框架的距离，从而最小化当施加力时经受挠曲的框架的长度。

公开(公告)号：US6093015A

公开(公告)日：2000-07-25

申请号：US227846

申请日：1999-01-11

Applicant: Lawrence J. Navarre

Inventor： Lawrence J. Navarre

IPC: B29C45/33 ,  B29C45/40

CPC classification number: B29C45/332 ,  Y10S425/005 ,  Y10S425/058

Abstract: A mold core positioning device includes a cam member carried by a first mold segment that is configured to engage a cam follower carried by a second, cooperating mold segment. The cam follower is provided on a core slide to which an outwardly extending core member, such as a core pin, is connected. The core slide is movable toward and away from a mold cavity to move the core pin into and out of a position within the mold cavity. The cam member includes an extension cam surface and a withdrawal cam surface. The withdrawal cam surface includes a breakaway cam surface that causes slow retraction of the core pin relative to the molded part, and a retraction cam surface that causes more rapid withdrawal of the core slide and core pin after the core pin has been initially separated from the molded part.

Abstract translation: 模芯定位装置包括由第一模具段承载的凸轮构件，该第一模具段被构造成与由第二配合模具段承载的凸轮从动件接合。 凸轮从动件设置在芯滑块上，向外延伸的芯构件（例如芯销）连接到该芯滑块上。 芯滑块可以朝向和远离模腔移动，以将芯销移入和移出模腔内的位置。 凸轮构件包括延伸凸轮表面和提取凸轮表面。 退出凸轮表面包括分离凸轮表面，其引起芯销相对于模制部件的缓慢缩回，以及在芯销初始与主销分离之后使芯滑块和芯销更快速退回的缩回凸轮表面 模制件。