Bottle inspection machine

US5729340A · kind A · utility

Assignee

• Krones AG Hermann Kronseder Maschinenfabrik · DE

Inventors

• Karl Griesbeck · Karlsruhe, DE
• Franz Haring · Neutraubling, DE
• Wolfgang Ruppelt · Beratzhausen, DE
• Hermann Kronseder

Key dates

• Filing date: Mar 27, 1995
• Grant date: Mar 17, 1998
• Expiry date: Mar 27, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/9036
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An inspection machine for transilluminatable bottles inspects the sidewalls of bottles by transmitting a diffused beam of light through the sidewall and using a plurality of mirrors appropriately arranged for detecting or recording the images emergent from the bottle in different directions in the same image recording camera. The arrangement requires at least two separate beam paths and mirrors in each path directing the bottle emergent beams to the camera while the bottles are being conveyed through a position in which they are illuminated. In an improved arrangement, there is a separate cooperating series of beam deflecting mirrors which generate at least three independent beam paths that impinge from different directions on the sidewall of the bottle being inspected. The recording device is preferably a camera having a charge coupled device image plate.