Devices and systems for locating and printing on glass supports
AssigneeSystem Ceramics S.P.A.
InventorsFederico Cavallini, Giuliano Pistoni
Life of this patent
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Abstract
A device for locating a moving glass support is described. A conveyor roller surface is arranged to generate movement of the glass support. The device illuminates the glass support and acquires a plurality of lines of the moving glass support. A primary image is generated as a function of the acquired plurality of lines. A plurality of representative points of the glass support are detected from the primary image. Location coordinates of the glass support are calculated as a function of the plurality of representative points. A system for printing on the glass support inclusive of the locating device is further described.
Claims14
A device for locating a glass support when said glass support is moving on a conveyor roller surface in a feed direction at a selectable speed, the device comprising:
- i) illumination means for said glass support configured to illuminate said glass support in movement on conveyor rollers;
- ii) acquisition means configured to acquire a plurality of lines of said glass support in movement as a function of a line frequency, the line frequency being defined as a function of an acquisition rate, said acquisition means being configured to acquire said plurality of rows;
- and
- iii) a processing unit, in data connection with said acquisition means, comprising:
- a) a receiver module configured to receive said plurality of lines acquired by said acquisition means;
- b) a generation module configured to generate a primary image as a function of an acquired plurality of lines;
- c) a detection module configured to detect from said primary image a plurality of representative points of said glass support, wherein the coordinates of said plurality of points are expressed in relation to a first reference;
- d) a locating module configured to receive, as input, said plurality of representative points and calculate location coordinates of said glass support relative to said first reference as a function of said plurality of representative points;
- and
- e) a loading module configured to load a graphic file describing a theoretical contour of said glass support in movement on said conveyor surface,
- wherein
- said plurality of points are representative of an actual contour of said glass support, and
- said locating module is configured to calculate said location coordinates of said glass support relative to said first reference as a function of said plurality of representative points, said calculation following a fitting algorithm between said actual contour of said glass support, determined by said plurality of points, and said theoretical contour of said glass support.
Dependencies are inferred from the claim text.