Method and apparatus for supporting a roll molding machine stand, and method and apparatus for measuring a supporting platform position

摘要

It is an object of the present invention to provide a supporting method, equipment, and controlling method for the roll-former stand by which the height and inclined angle of the cluster roll comprising subsequentially deposited plurality of side rolls likely as a roll former as a pipe mill can be arbitrarily set, and the interdistance between said rolls can be reduced. The basic structure consists of the following procedures; namely, (1) a supporting a pair of cluster platforms, on which a common bed is mounted, by a link being formed by jacks; a plurality of side rolls is supported by a roll bracket and deposited on said common bed, (2) fixing both end portions of the link on the platform or a bed plane surface to form an arbitrary triangle, and (3) measuring the length of the link by a linear encoder which is provided along said links. The measured data is converted to the Cartesian coordinates by the computer. Being based on the thus converted measured data, the information of the current positions and the target positions are comparison-computed to change the lengths of each link. By adjusting the lengths of the expanding and/or contracting movement of the links, the links can be freely adjusted either upper or lower (vertical) direction, left or right (horizontal) direction as well as the contact (rotational) direction with the workpiece with respect to the workpiece flow direction. Moreover, even a rotatable horizontal roll is deposited within the side roll cluster, it does not cause the roll distance of side rolls longer. Hence, the undesired degradation of productivity due to the buckling occurred at edge portions of the workpiece can be minimized. Furthermore, according to the present invention, the pipes with the thin wall thickness which tends to create the unavoidable distortion can be fabricated. IMAGE