Device and a method for circularizing croissant dough, a device and a device and a method for forming croissant dough in a U-shape, and a system for producing croissants

A system for producing croissants comprising:

• a device for circularizing croissant dough that circularizes rolled-up croissant dough that has been bent at a center to be formed in a U-shaped croissant dough and is conveyed by a conveyor, comprising:
• a first guide for reducing a width that moves a first end of the U-shaped croissant dough toward a center of the U-shape, the first guide linearly moving toward, and retracting from, the center;
• a plate that is configured to reciprocate horizontally toward the center of the U-shaped croissant dough to slip under a second end of the U-shaped croissant dough and vertically moves upward to lift a lower face of the second end above an upper face of the first end;
• a second guide for reducing the width that is configured to move vertically upward with the plate and slides on, and relative to, the plate to move the second end of the croissant dough, that is lifted with the plate, toward the center of the U-shape, the second guide linearly moving toward, and retracting from, the center;
• and
• a pusher that vertically presses the first end and the second end that are moved to the center of the U-shape so as to stick one to the other;
• and
• a device for forming croissant dough in a U-shape that supplies the U-shaped croissant dough to the device for circularizing the croissant dough, comprising:
• a conveyor that conveys rolled-up croissant dough that is placed so that a longitudinal direction of the croissant dough is perpendicular to a direction for conveyance;
• a pair of side belts, wherein one side belt is provided on each side of the conveyor, and wherein the pair of side belts contact respective legs of the U-shaped croissant dough to transport the croissant dough in the direction for conveyance;
• a center pin that pushes a center of a length of the croissant dough that is conveyed by the conveyor in the direction for conveyance so as to feed the croissant dough to the pair of side belts;
• and
• a sensor that measures lengths of, or a distance between ends of, the legs of the U-shape;
• wherein based on the lengths of the legs of the U-shape or the distance between the ends of the legs of the U-shape measured by sensor rates for transporting the U-shaped croissant dough by the pair of side belts are adjusted to arrange the legs of the U-shape to have the same length.