Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Feed control of material en route to shaping area
Patent
1994-11-22
1996-02-27
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Feed control of material en route to shaping area
425320, 425323, 425334, 425391, 426500, A21C 308
Patent
active
054944287
ABSTRACT:
An apparatus for manufacturing pretzels is provided, which increases production and reduces waste. The apparatus includes a stationary platform onto which strands of dough are deposited. Adjacent to the platform is a conveyor belt with projections that pull the center of the dough strands off the platform in a direction normal to the strands' longitudinal axis. A pair of sensors, preferably mounted on the platform evenly spaced from the centerline of the conveyor belt, detect the ends of the dough strands as they begin to be pulled off the platform. As each sensor detects its corresponding end of the dough strand, a corresponding holding clamp grips that end, thereby centering the dough relative to the conveyor belt. A pair of moveable grippers rotatable about a common central vertical axis are mounted above the conveyor belt to grasp the ends of the dough strand, twist the ends and deposit the ends on the center portion of the dough strand to form a pretzel. By automatically centering the dough strand on the conveyor, the overhead grippers need not adjust their position to compensate for the position of the dough, thereby increasing the speed of operation and reducing the amount of dough wasted.
REFERENCES:
patent: 2057772 (1936-10-01), Elliott
patent: 5009910 (1991-04-01), Zwicker
patent: 5382154 (1995-01-01), Morikawa et al.
patent: 5440974 (1995-08-01), Uneo et al.
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