公开(公告)号：US5454313A

公开(公告)日：1995-10-03

申请号：US376979

申请日：1995-01-23

Applicant: W. Allan Jenkins

Inventor： W. Allan Jenkins

IPC: B41F31/13 ,  B41L27/08

CPC classification number: B41F31/13

Abstract: A variable speed transmission apparatus is disclosed for controlling the rotational speed of a fountain roller in an offset printing press. The apparatus includes a mounting plate adapted to be mounted about the shaft of the fountain roller. A screw mechanism is mounted on the mounting plate and has a sliding block or nut for controlling the position of a first link of a two-bar linkage having a common pivot axis connected to a reciprocating drive in the printing press. The second link of the two-bar linkage is pivotally coupled to oscillate a drive crank with a one-way bearing mounted on the fountain roller shaft. Changing the position of the first bar of the two-bar linkage gives infinitely variable adjustment of the oscillating motion of the crank and thus the rotation of the fountain roller. All of the components being mounted relative to a single mounting plate, the apparatus can be retrofitted to existing fountain roller equipment.

Abstract translation: 公开了一种用于控制胶版印刷机中的墨斗辊的旋转速度的变速传动装置。 该装置包括适于围绕供墨辊的轴安装的安装板。 螺钉机构安装在安装板上，并且具有滑动块或螺母，用于控制具有连接到印刷机中的往复驱动的公共枢转轴线的两杆连杆的第一连杆的位置。 两杆联动装置的第二连杆枢转地联接以使安装在供墨辊轴上的单向轴承摆动驱动曲柄。 改变两杆连杆的第一杆的位置可以实现曲柄的摆动运动以及因此旋转辊筒的无级变化。 所有组件相对于单个安装板进行安装，该装置可以被改装到现有的供墨辊设备。