Patent ID: 8522659

Claim:
AN AUTOMATIC MACHINE FOR PUNCHING AND CUTTING WHEEL RIMS, which is used for punching holes through a longitudinal sheet or wheel rim ( 10 ) that passes in a horizontal direction, using punches, and is also used for cutting said longitudinal sheet or wheel rim into small pieces, using a cutter, the machine comprising: a frame ( 1 ) having a transversal lower guide ( 5 ); independent movable butts ( 21 ); a cutter-holding carriage ( 4 ) having an upper guide ( 7 ); a punching device ( 6 ) having an upper support ( 19 ), a lower front carriage ( 8 ), punch-holders ( 15 ) and punches ( 15 ′) extending from the punch-holders ( 15 ), wherein the upper support ( 19 ) is coupled to the upper guide ( 7 ), wherein the lower carriage ( 8 ) is coupled to the transversal lower guide ( 5 ), and wherein the punch-holders ( 15 ) are guided on the lower front carriage ( 8 ) and coupled to the upper support ( 19 ); an oleohydraulic cylinder ( 2 ) having a shaft ( 3 ), wherein the oleohydraulic cylinder is positioned at a top of the frame ( 1 ) in a vertical direction, and the shaft ( 3 ) is connected to the cutter-holding carriage ( 4 ); wherein the punching and cutting operations are powered by a single oleohydraulic cylinder; wherein the downward movement of the shaft ( 3 ) causes the movement of the cutter-holding carriage ( 4 ) and the upper support ( 19 ) towards the sheet ( 10 ) to punch holes in the sheet ( 10 ) and then cut the sheet ( 10 ) into small pieces; wherein the movement of the punch-holders ( 15 ) and punches ( 15 ′) during the simultaneous downwards movement of the cutter-holding carriage ( 4 ) and of the upper support ( 19 ), depend on positions of the independent movable butts ( 21 ) which if the independent movable butts ( 21 ) are located between upper end bases of the punch-holders ( 15 ) and a plate ( 18 ) of the support ( 19 ), a completely downward movement of the punches ( 15 ′) will be allowed so that the punches ( 15 ′) punch holes in the sheet ( 10 ), whereas if such independent moveable butts ( 21 ) are not located between the upper end bases of the punch-holders ( 15 ) and the plate ( 18 ) of the upper support ( 19 ), the completely downward movement of the punches ( 15 ′) to punch holes will not be allowed because when the punches ( 15 ′) contact the sheet ( 10 ), the sheet ( 10 ) stops the downward movement of the punches ( 15 ′) while still allowing the downward movement of the cutter-holding carriage ( 4 ) and the upper support ( 19 ).