专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5031852A Film-thrusting cassette 失效
标题翻译：胶片推拉盒
公开(公告)号：US5031852A
公开(公告)日：1991-07-16
申请号：US464264
申请日：1990-01-12
申请人： Edward H. Dowling , Russell J. Butler , Christopher P. McCormick
发明人： Edward H. Dowling , Russell J. Butler , Christopher P. McCormick
IPC分类号： G03C3/00 , G03B17/30
CPC分类号： G03B17/30 , G03B2217/261 , G03B2217/266
摘要： In a film cassette, a film spool comprises a spool core supported for rotation in an unwinding direction to thrust a leader section of a film roll coiled about the spool core to the exterior of the cassette and in a winding direction to return the leader to the interior of the cassette, and a pair of flanges positioned along the spool core to overlie opposite sides of the film roll to radially confine the film roll within skirted peripheries of the flanges. The flanges have respective central openings through which the spool core coaxially extends to normally permit the flanges and the spool core to be independently rotated in the two directions. According to the invention, engagement hooks are rotatably fixed to the spool core for initial rotation with the spool core relative to the flanges in the unwinding direction, for movement into engagement with at least one of the flanges to make the flange rotate in unity with the spool core when the spool core is rotated further in the unwinding direction, to improve the ability of the film spool to thrust the leader from the cassette, and in the film winding direction, for movement out of engagement with the flange to permit the flange to be independently rotated when the spool core is rotated further in the winding direction, to substantially ensure the leader can be rewound within the skirted periphery of the flange.

2. 发明授权

US4802140A Method and molding screw for injection molding 失效
标题翻译：注塑成型方法和成型螺杆
公开(公告)号：US4802140A
公开(公告)日：1989-01-31
申请号：US43779
申请日：1987-04-29
申请人： Edward H. Dowling
发明人： Edward H. Dowling
IPC分类号： B29B7/42 , B29C45/50 , B29C45/60 , B29C47/38 , B29C47/48 , B29B7/10
CPC分类号： B29C47/48 , B29B7/42 , B29C45/50 , B29C45/5092 , B29C45/60 , B29C47/38 , B29C47/6006 , B29C47/0009
摘要： This invention relates to a method and molding screw for injection molding. The molding screw has a fixed inner screw mounted within a rotatable and reciprocally movable outer screw. The outer screw is continuously rotated throughout the injection cycle to (1) counter the back flow of melt material around the screw, (2) subject the melt material surrounding the inner screw to a vigorous mixing action, (3) add additional thrust to inject the melt material into the mold, and (4) return the outer screw to its initial starting position. A rod-type electrical heater is internally positioned in the fixed screw to maintain the temperature throughout the melt material surrounding the inner screw at a substantially constant value which is substantially equal to the barrel temperature.
摘要翻译：本发明涉及一种用于注射成型的方法和成型螺杆。成形螺钉具有安装在可旋转且可往复运动的外螺纹内的固定内螺纹。外螺纹在整个注射循环中连续旋转，以（1）抵消螺杆周围的熔体材料的回流，（2）使围绕内螺杆的熔体材料受到剧烈的混合作用，（3）增加额外的推力以注入熔化材料进入模具，和（4）将外螺纹返回到其初始起始位置。杆式电加热器内部定位在固定螺钉中，以将围绕内螺杆的熔融材料的温度保持在基本上等于机筒温度的基本恒定的值。

3. 发明授权

US4186161A Method of continuous injection molding of plastic articles 失效
标题翻译：塑料制品的连续注塑成型方法
公开(公告)号：US4186161A
公开(公告)日：1980-01-29
申请号：US595653
申请日：1975-07-14
申请人： Lawrence A. Ulmschneider , Edward H. Dowling
发明人： Lawrence A. Ulmschneider , Edward H. Dowling
IPC分类号： B29C45/06 , B29F1/00
CPC分类号： B29C45/06
摘要： A method of injection molding plastic articles using a rotor assembly that continuously rotates past a stationary extruder that supplies molten plastic material to the assembly. The rotor assembly includes a plurality of mold assemblies, each mold assembly having a pair of separable mating die members which are selectively opened and closed. A plurality of injection chambers is disposed within the rotor assembly in cooperating relationship with each pair of die members. The rotor assembly is continuously rotated past the extruder and molten plastic material is supplied directly into the bottom of each injection chamber. The rotor assembly is then rotated to a position where a ram is driven into the injection chamber to force material in the chamber into a mold cavity formed by the mold assemblies. During rotation of the rotor assembly from the extruder to the ram, the molten material is retained in the injection chamber by adhesion between the material and the walls of the injection chamber. Each mold assembly is opened after the plastic material therein has solidified, the solidified material is removed, and the mold assembly is again closed before it reaches the extruder.
摘要翻译：一种使用转子组件注塑塑料制品的方法，所述转子组件通过将熔融塑料材料供应到组件的固定挤出机连续旋转。转子组件包括多个模具组件，每个模具组件具有选择性地打开和关闭的一对可分离的配合模具构件。多个注射腔室与转子组件内的每对模具构件配合关系地设置。转子组件连续地旋转经过挤出机，并将熔融的塑料材料直接供应到每个注射室的底部。然后将转子组件旋转到一个位置，在该位置，冲头被驱动进入注射室，以迫使腔室中的材料进入由模具组件形成的模腔中。在将转子组件从挤出机旋转到冲头期间，熔融材料通过材料与注射室的壁之间的粘合而保持在注射室中。每个模具组件在其中的塑料材料已经固化之后打开，固化的材料被去除，并且模具组件在其到达挤出机之前再次关闭。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式