Chambered doctor blade device for printing unit
    1.
    发明授权
    Chambered doctor blade device for printing unit 失效
    打印单元的刮刀刮刀装置

    公开(公告)号:US5671673A

    公开(公告)日:1997-09-30

    申请号:US618398

    申请日:1996-03-19

    IPC分类号: B41F31/02 B41F31/04 B41F31/06

    CPC分类号: B41F31/027

    摘要: A chambered doctor blade device intended for a printing unit and adapted to coat a rotatable cylinder (2) with ink, lacquer, adhesive or the like, comprises an elongate frame (8) which is arranged parallel to and outside the cylinder (2) and on which are mounted two parallel, elongate and spaced-apart doctor blades (9,10) to be resiliently and scrapingly applied against the cylinder (2) in operative position. An elongate chamber (11) holding ink (12) or the like is defined by the doctor blades (9,10), the surface of the frame (8) facing the cylinder (2), and the circumferential surface of the cylinder (2). To achieve good flexural and torsional rigidity, the frame (8) comprises at least two elongate interconnected metal sections (13,14) which are made of bent thin sheet-metal, preferably of stainless steel, and by means of which the elongate portion of the frame (8) located between the mounting places for the doctor blades (9,10) forms an elongate stiffening or reinforcing portion. Such a frame (8) ensures, in operation, a set constant distance between the frame (8) and the cylinder (2) and, consequently, constant application of the doctor blades (9,10) against the cylinder (2).

    摘要翻译: 用于印刷单元并适于用油墨,漆,粘合剂等涂覆可旋转气缸(2)的腔室刮刀装置包括平行于气缸(2)和外侧设置的细长框架(8)和 其上安装有两个平行的,细长的和间隔开的刮刀(9,10),以在操作位置弹性地和刮擦地施加在气缸(2)上。 保持墨水(12)等的细长室(11)由刮刀(9,10),框架(8)的面向气缸(2)的表面和气缸(2)的圆周表面 )。 为了获得良好的弯曲和扭转刚度,框架(8)包括至少两个细长的相互连接的金属部分(13,14),其由弯曲的薄金属薄片制成,优选地由不锈钢制成,并且通过其 位于用于刮刀(9,10)的安装位置之间的框架(8)形成细长的加强或增强部分。 这种框架(8)在操作中确保了框架(8)和气缸(2)之间的设定的恒定距离,并因此确保了刮刀(9,10)相对于气缸(2)的不断施加。