Universal sharpening device for slicing machines with circular blade

Abstract

A universal sharpening device for slicing machines with circular blade which comprises a supporting element, which is provided with elements for engaging the wing of a slicing machine, and an arm, which is associated with the supporting element and supports at least two grinding wheels. The arm is movable with respect to the supporting element from an inactive position, in which the grinding wheels are spaced from the blade of the slicing machine, to a first active position, in which one grinding wheel is moved into contact with the blade of the slicing machine, to a second active position, in which at least one other grinding wheel is moved into contact with the blade of the slicing machine.

1 - 8 . (canceled) 
     
     
         9 . A universal sharpening device for slicing machines with circular blade, comprising:
 a supporting element, which is provided with means for engaging the wing of a slicing machine;   an arm, which is associated with said supporting element and supports at least two grinding wheels;   said arm being movable with respect to said supporting element from an inactive position, in which said grinding wheels are spaced from the blade of the slicing machine, to a first active position, in which one grinding wheel of said grinding wheels is moved into contact with the blade of the slicing machine, to a second active position, in which at least one other grinding wheel of said grinding wheels is moved into contact with the blade of the slicing machine.   
     
     
         10 . The sharpening device according to  claim 9 , further comprising three grinding wheels: a roughing wheel, a finishing wheel and a trimming wheel; said roughing wheel and said finishing wheel being mounted on said arm and being engageable with a same side of the blade of the slicing machine as an alternative to each other, respectively with said arm in said first active position and with said arm in said second active position; said trimming wheel being engageable with the side of the blade of the slicing machine that is opposite with respect to the side contacted by said finishing wheel, with said arm in said second active position. 
     
     
         11 . The sharpening device according to  claim 10 , wherein said arm is provided like a rocker which is pivoted, with an intermediate portion, to said supporting element about a main axis; said arm supporting, proximate to its ends, which are mutually opposite with respect to said main axis, said roughing wheel and said finishing wheel and being able to rotate about said main axis with respect to said supporting element in one direction in order to be arranged in said first active position and in the opposite direction in order to be arranged in said second active position, said inactive position corresponding to a rotational position of said arm which is located between the rotational positions that correspond to said first active position and to said second active position. 
     
     
         12 . The sharpening device according to  claim 11 , wherein said engagement means can engage two opposite faces of the wing and are adapted to keep said supporting element stably engaged with the wing and arranged so that said main axis is substantially parallel to the rotation axis of the blade. 
     
     
         13 . The sharpening device according to  claim 10 , wherein said trimming wheel is supported slidingly by said supporting element along a direction that is substantially parallel to said main axis, means being provided for spacing said trimming wheel from the blade of the slicing machine in contrast with elastic return means; said arm being connected to said spacer means for the deactivation of said spacer means when said arm passes into said second active position. 
     
     
         14 . The sharpening device according to  claim 9 , wherein said engagement means comprise:
 a pair of locators, which are mutually spaced and can engage a curved profile of the wing that faces a cutting edge of the blade, said locators being arrangeable so as to rest against a face of the wing that lies on a plane that is substantially perpendicular to a rotation axis of the blade;   a contrast screw, which can be tightened against an opposite face of the wing.   
     
     
         15 . The sharpening device according to  claim 9 , wherein each one of said grinding wheels has a disk-like shape with a peripheral annular portion that is designed to make contact with a peripheral band of the blade. 
     
     
         16 . The sharpening device according to  claim 10 , wherein said trimming wheel and said finishing wheel are supported rotatably about the corresponding axes by said arm and in that axes of said roughing wheel and of said finishing wheel are inclined, on mutually opposite sides, with respect to an imaginary plane that passes through a rotation axis of the blade and said main axis, with said supporting element connected to the wing of the slicing machine.