Sheeting head apparatus for rolling and flattening a quantity of dough, includes a sheeting head, an infeed conveyor, and an outfeed conveyor. The sheeting head defines a dough path therethrough and includes a plurality of opposed roller pairs. The first roller of each roller pair is mounted for rotation and for independent movement toward and away from the dough path. The infeed conveyor conveys a quantity of dough to the sheeting head, and the outfeed conveyor for conveying a quantity of rolled and flattened dough from the sheeting head. A sensor, adjacent the infeed conveyor, senses an unduly thick or double quantity of dough being conveyed by the infeed conveyor to the sheeting head. A control is responsive to the sensor and causes the sheeting head to move the first roller of each roller pair away from the dough path.
1. Sheeting head apparatus for rolling and flattening a quantity of dough, comprising:
a sheeting head defining a dough path therethrough and comprising a plurality of opposed roller pairs, a first roller of each pair being positioned on a first side of the dough path and a second roller of each pair being positioned on a second side of the dough path, the first roller of each roller pair being mounted for rotation and for independent movement toward and away from said dough path and the second roller of each roller pair being mounted for rotation adjacent the dough path,
an infeed conveyor for conveying a quantity of dough to said sheeting head,
an outfeed conveyor for conveying a quantity of rolled and flattened dough from said sheeting head,
a sensor adjacent said infeed conveyor sensing an unduly thick or double quantity of dough being conveyed by said infeed conveyor to said sheeting head,
a control, responsive to said sensor, for causing said sheeting head to move said first roller of each roller pair away from said dough path, whereby undesired jamming of said sheeting head by an unduly thick quantity of dough or by a double quantity of dough is prevented.
2. The sheeting head apparatus of claim 1 in which said sensor comprises a photosensor and a light source positioned on opposite sides of said infeed conveyor.
3. The sheeting head apparatus of claim 1 in which said first and second rollers in each roller pair comprise direct drive rollers.
4. The sheeting head apparatus of claim 3 in which said first and second rollers in each roller pair comprise drum motors.
5. The sheeting head apparatus of claim 1 in which each of said rollers is coated with a coating of polytetrafluoroethylene and nickel co-deposits with a thickness of substantially between 0.0002 inches and 0.0003 inches, with a Rockwell hardness of substantially 65 to 75 on the C scale.
6. The sheeting head apparatus of claim 5 in which each of said rollers is made of a mild steel with a finish smoothness before depositing polytetrafluoroethylene and nickel co-deposits of substantially 4μ-inch RMS.
7. Sheeting head apparatus for rolling and flattening a quantity of dough, comprising:
a sheeting head defining a dough path therethrough and comprising a plurality of opposed roller pairs, each roller comprising an independently driven drum motor having a non-rotating drum motor shaft extending from each end, a first drum motor of each pair of rollers being positioned on a first side of the dough path and a second drum motor of each pair of rollers being positioned on a second side of the dough path, the first roller of each roller pair having its drum motor shaft mounted at each end of the drum motor in support blocks,
plurality of driving servo motors, each servo motor attached to rotate a threaded screw that is threaded through an associated support block, whereby rotation of the threaded screw causes the associated roller to move toward or away from said dough path,
an infeed conveyor for conveying a quantity of dough to said sheeting head,
an outfeed conveyor for conveying a quantity of rolled and flattened dough from said sheeting head,
a sensor adjacent said infeed conveyor sensing an unduly thick or double quantity of dough being conveyed by said infeed conveyor to said sheeting head,
a control, responsive to said sensor, for causing said driving servo motors to rotate associated threaded screws and move their associated rollers away from the dough path, thereby opening the dough path and preventing jamming of said sheeting head by an unduly thick quantity of dough or by a double quantity of dough.
8. The sheeting head apparatus of claim 7 , further comprising a shaft extending parallel to each roller for transmitting rotation of said threaded screw which moves one end of the roller to rotate another threaded screw that is threaded through a support block at the opposite end of the roller, thereby causing said roller to move toward or away from said dough path.
9. The sheeting head apparatus of claim 7 in which said sensor comprises a photosensor and a light source positioned on opposite sides of said infeed conveyor.
10. The sheeting head apparatus of claim 7 in which each of said rollers is coated with a coating of polytetrafluoroethylene and nickel co-deposits with a thickness of substantially between 0.0002 inches and 0.0003 inches, with a Rockwell hardness of substantially 65 to 75 on the C scale.
11. The sheeting head apparatus of claim 7 in which each of said rollers is made of a mild steel with a finish smoothness before depositing polytetrafluoroethylene and nickel co-deposits of substantially 4μ-inch RMS.