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公开(公告)号：US6119595A
公开(公告)日：2000-09-19
申请号：US944168
申请日：1997-10-06
CPC分类号： B41F9/065
摘要： A pair of doctor blade assemblies extend from upper and lower ends of a housing. Seal assemblies having compressible seals, seal spacers and retaining plates are disposed at opposite ends of the housing and extend between the upper and lower doctor blade assemblies. The doctor blade assemblies, the seal assemblies, the inner surface of the housing and the outer surface of the transfer roll define a fully encapsulated applicator chamber. The upper blade assembly includes a doctor blade positioned as a trailing edge blade, a blade support for clamping the blade and for securing the blade to the housing, a blade seal positioned for sealing the ink chamber and a pneumatic assembly for adjusting the pressure of the trailing doctor blade against the transfer roll. The lower blade assembly includes a doctor blade positioned as a trailing edge blade and a blade support for clamping the blade and for securing the blade to the lower end of the housing. The angle of inclusion formed between the doctor blades is at least about 150 degrees. The plates, seals and spacers of the seal assemblies have arcuate front edges which follow along and abut ends of the transfer roll. An adjustable slide mechanism moves the housing, the blade assemblies and the end seal assemblies into and out of contact with the transfer roll. Pneumatic cylinders connected to the upper blade assembly apply precise wiping pressure. Knobs allow turning connecting screws for minor positioning adjustments.
摘要翻译： 一对刮刀组件从壳体的上端和下端延伸。 具有可压缩密封件，密封垫片和保持板的密封组件设置在壳体的相对端部并且在上部和下部刮刀组件之间延伸。 刮刀组件，密封组件，壳体的内表面和转移辊的外表面限定了完全封装的涂敷室。 上刀片组件包括定位为后缘刀片的刮刀，用于夹紧刀片并用于将刀片固定到壳体的刀片支撑件，用于密封墨腔的刀片密封件和用于调节刀片的压力的气动组件 后刮刀对着转印辊。 下刀片组件包括定位为后缘刀片的刮刀和用于夹紧刀片并将刀片固定到壳体的下端的刀片支撑件。 形成在刮刀之间的夹角为至少约150度。 密封组件的板，密封件和间隔件具有跟随传送辊的端部并且邻接传送辊的端部的弓形前边缘。 可调节的滑动机构将壳体，叶片组件和端部密封组件移动到与转印辊接触和脱离接触。 连接到上刀片组件的气动气缸应用精确的擦拭压力。 旋钮允许旋转连接螺丝进行微小的定位调整。
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