Patent ID: 8887607

Claim:
A tool change device ( 12 ) for a working apparatus ( 10 ) of longitudinal shearing machines adapted for working on paper, cardboard, plastic films, various coupled materials, aluminum, fabric, non woven, glass fiber, carbon fiber and similar materials, said tool change device comprising: a tool holder ( 28 ) having a direct and quick compressed air feed; a tool or blade holder head ( 16 ); and a block ( 14 ) stabilized on a lower front surface thereof to said tool or blade holder head ( 16 ) and coupled on an upper front surface thereof by a coupling device to a lower front surface of said tool holder ( 28 ) for quick coupling/centering and extraction with translatory movement between said block ( 14 ) and said tool holder ( 28 ), wherein said coupling device includes a first appendix ( 34 ) extending vertically downwardly from a first end of said lower front surface of said tool holder ( 28 ) providing an abutment for said block ( 14 ) and having a horizontally directed through hole ( 38 ) for acceptance of a pin ( 50 ) adapted to be coupled to said block ( 14 ), and a second appendix ( 36 ) extending horizontally from a second end of said lower front surface of said tool holder ( 28 ) opposing said first end of said lower front surface of said tool holder ( 28 ) having a vertically directed through hole ( 40 ) for acceptance of a screw or pivot ( 56 ) adapted to be coupled to said block ( 14 ).