Machine for manufacturing folded boxes
First Claim
1. A machine for manufacturing folded boxes with sheet material, comprising:
- a plurality of successive stations operating in synchronism, including a feed station, a centering station, a printing station, a cutting station, a folding and gluing station and a stacking and delivery station;
said feed station including stack receiving means for holding a stack of sheets, stack feeding means for feeding a stack to said stack receiving means, stack centering means for centering a received stack with respect to the center line of the machine, and first feed means for feeding the uppermost sheet of the stack to said centering station;
said centering station including set centering means for centering a sheet with respect to the center line, and second feed means for feeding a centered sheet to said printing station;
said printing station comprising a plurality of selectively operable printing units including printing cylinders positioned to print on the bottom surface of a sheet;
said cutting station comprising first and second successively operating cutting units for slotting a sheet along predetermined fold lines and for cutting a sheet to a predetermined form, said second cutting unit mounted for movement to a non-working position;
said folding and gluing station comprising a telescopic conveyor to be extended into the working space of said second cutting unit when the same is in its non-working position, a folder for folding a sheet along the predetermined fold lines, and a gluer for gluing together opposite transverse marginal portions of a folded sheet to form a box form;
said stacking and delivery station comprising stacking means for stacking the box forms, counting means for counting the stacked forms, and stack conveying means for conveying a stack out of the machine in response to said counting means reaching a predetermined count;
a plurality of D.C. motors connected to and driving said stations in synchronism;
lateral shifting means in each of said stations;
a plurality of asynchronous A.C. motors connected to and operable to shift said lateral shift means at each of said stations; and
a machine control system including a program and data processing control circuit for storing and processing operating parameters of the machine, a register control circuit for sensing sheet registration and producing corresponding data, a D.C. control circuit connected to said D.C. motors for controlling synchronism and registration, and an A.C. control circuit connected to said A.C. motors for controlling lateral sheet displacement.
1 Assignment
0 Petitions
Accused Products
Abstract
A box making machine comprises a feed station, a positioning station, a printing station including four printing units, a cutting station with a creasing unit, a slotting unit and a cutting unit, a folding-gluing station and a stacking and delivery station, all driven by D.C. motors. The D.C. motors control is achieved by the electrical shaft coupling driven by a driving device which comprises a command control unit having a code generator, a synchronization circuit for each motor and a curved generator for one of the motors, a calculating unit including a microprocessor, input/output circuits and an input circuit with switches, a signal conditioning unit with an element for sense discrimination and multiplication, and a signal conditioner, and a command logic unit including a logic drive selection circuit, a logic starting circuit and a logic manual command circuit.
93 Citations
6 Claims
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1. A machine for manufacturing folded boxes with sheet material, comprising:
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a plurality of successive stations operating in synchronism, including a feed station, a centering station, a printing station, a cutting station, a folding and gluing station and a stacking and delivery station; said feed station including stack receiving means for holding a stack of sheets, stack feeding means for feeding a stack to said stack receiving means, stack centering means for centering a received stack with respect to the center line of the machine, and first feed means for feeding the uppermost sheet of the stack to said centering station; said centering station including set centering means for centering a sheet with respect to the center line, and second feed means for feeding a centered sheet to said printing station; said printing station comprising a plurality of selectively operable printing units including printing cylinders positioned to print on the bottom surface of a sheet; said cutting station comprising first and second successively operating cutting units for slotting a sheet along predetermined fold lines and for cutting a sheet to a predetermined form, said second cutting unit mounted for movement to a non-working position; said folding and gluing station comprising a telescopic conveyor to be extended into the working space of said second cutting unit when the same is in its non-working position, a folder for folding a sheet along the predetermined fold lines, and a gluer for gluing together opposite transverse marginal portions of a folded sheet to form a box form; said stacking and delivery station comprising stacking means for stacking the box forms, counting means for counting the stacked forms, and stack conveying means for conveying a stack out of the machine in response to said counting means reaching a predetermined count; a plurality of D.C. motors connected to and driving said stations in synchronism; lateral shifting means in each of said stations; a plurality of asynchronous A.C. motors connected to and operable to shift said lateral shift means at each of said stations; and a machine control system including a program and data processing control circuit for storing and processing operating parameters of the machine, a register control circuit for sensing sheet registration and producing corresponding data, a D.C. control circuit connected to said D.C. motors for controlling synchronism and registration, and an A.C. control circuit connected to said A.C. motors for controlling lateral sheet displacement. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification