公开(公告)号：US4290351A

公开(公告)日：1981-09-22

申请号：US083632

申请日：1979-10-11

申请人： Josef Pav ,  Franz Kayser ,  Axel Kemna

发明人： Josef Pav ,  Franz Kayser ,  Axel Kemna

IPC分类号： B29C43/00 ,  B29C33/00 ,  B29C43/24 ,  B29C43/46 ,  B29C43/58 ,  D06C15/02 ,  D21G1/00 ,  B30B3/04 ,  B30B15/16

CPC分类号： D21G1/002

摘要： The lowermost roll of a row of superimposed rolls in the stand of a calender is movable downwardly at a continuously increasing speed through a first distance which suffices to increase the width of clearances between neighboring rolls in the event of breakage of the running web so that the rolls cannot damage each other, and thereupon through a second distance which is at least 50 percent of the first distance. The lowermost roll is braked only during movement through the second distance so that the first distance can be covered, under the action of gravity alone or under the action of gravity plus the action of several double-acting hydraulic cylinders, within a fraction of the time which is required for adequate separation of rolls in a calendar wherein the lowermost roll must be braked during travel through the first distance. The speed of the lowermost roll during movement through the second distance is regulated by flow restrictors which are installed in conduits for evacuation of liquid from the lower chambers of the double-acting cylinders and which are adjustable by a control unit in accordance with a preselected pattern as a function of time and/or as a function of the extent of downward movement of the lowermost roll. The uppermost roll is hydraulically locked against any movement during downward movement of the lowermost roll.

摘要翻译： 砑光机支架中的一排重叠辊的最下卷可以以连续增加的速度向下移动第一距离，这足以在运行幅材断裂的情况下增加相邻辊之间间隙的宽度，使得 卷不能彼此损坏，并且通过第二距离至少为第一距离的50％。 最低的辊只在运动通过第二距离时制动，使得第一距离可以在重力作用下或在重力作用下加上几个双作用液压缸的作用被覆盖在一小部分时间内 这是在日历中适当分离辊所需要的，其中最下辊必须在行进通过第一距离期间被制动。 通过第二距离运动过程中最下辊的速度由流量限制器调节，流量限制器安装在用于从双作用气缸的下腔排出液体的导管中，并且可根据预选图案由控制单元调节 作为时间的函数和/或作为最下面的卷的向下运动的程度的函数。 在最下面的辊的向下运动期间，最上面的辊被液压锁定以防止任何运动。