Support apparatus for embossing rolls comprising a fixed structure (1) with two sides (10), which provide multiple supports for one or more embossing rolls (2) having the respective horizontal axes between said sides (10) and being connected with corresponding motors (45) which make the rolls rotate around the respective axes at a preset angular velocity, characterized in that each of said supports is of the collar type (3) coaxial with and external to the axis of the respective embossing roll (2) and made by two elements (30, 31), one (30) being fixed and the other one (31) mobile, the mobile element (31) realizing the closing and, respectively, the opening of the collar (3) around the axis of the embossing roll (2) by means of an actuator (4; 62) controlled by a corresponding control device.