DEVICE FOR REPLACEMENT OF KNIFE IN SHEARS, IN PARTICULAR FOR ROLLED STRIP, AND SHEARS WITH AT LEAST ONE REPLACEABLE KNIFE Russian patent published in 2019 - IPC B23D25/12 B23D35/00 B26D7/26 

FIELD: methods and devices for metal processing.

SUBSTANCE: invention relates to a device for replacement of a knife in shears, in particular for a rolled strip, and to such shears, in which it is possible to automatically install a knife in at least one knife holder by means of a rod pre-loaded by means of a power accumulator. Proposed device comprises, at least, one adjusting element designed so that its action to release knife from knife holder results in axial movement of thrust opposite its pre-loading direction. Adjusting element is arranged with the possibility of its location on the outer side of the knife holder or outside the knife holder. Said at least one control member comprises a control rod configured to move in the direction of the longitudinal axis of the tie rod and to be brought into contact with the end side of the tie rod either directly or indirectly, preferably by means of a connecting rod. Said at least one control member is made in the form of a hydraulic cylinder, wherein the control rod is connected to the hydraulic cylinder piston.

EFFECT: result is simplified and faster replacement of blade in shears.

11 cl, 13 dwg