The vacuum inspection systems of the INDEC series offer our customers a reliable solution for leak testing of jars, bottles and metal cans even under extreme operating conditions. The inspection takes place contact-free as a 100% in-line inspection directly in the production process. An optical sensor detects the vacuum-induced deformation of the lids. Even non-metallic container closures can be inspected. Containers with insufficient vacuum, crooked or missing lids are reliably detected and can be separated fully automatically from the product flow with an ejector. All components are made of stainless steel (1.4404), are resistant to cleaning agents and disinfectants and meet the requirements of protection class IP69K.
How do vibrations of the conveyor affect the reliability of INDEC systems?
We are often confronted by our customers with the question of whether the INDEC systems still function reliably when the conveyor belt is vibrating. This question can be answered with an unequivocal yes.
For this purpose, we would like to refer again to the measuring procedure and the mode of operation of all INDEC systems. The test procedure is based on the determination of the vacuum-induced deformation of the passing container closures. The tightness of the containers is assessed by comparison with a previously “Golden” sample. If a container to be inspected interrupts the light barrier under the sensor head, an infrared light beam is emitted by the sensor head and reflected by the lid of the container. A sophisticated algorithm calculates the concave shape (yellow curve between the two red arrows, see the figure below measuring principle) of the deformed lid caused by the vacuum in the head space. Depending on the given boundary conditions, vacuum tests are possible from
50 µm deformation or from 150 mbar differential pressure in the headspace to the external pressure.
To illustrate the correct operation of the INDEC models even when the conveyor belt is vibrating, see the following video. From 0:34...0:50 min, artificial vibrations are triggered on the sensor head - analogous to vibrations of the conveyor belt - the INDEC system continues to work correctly in that only when passing the opened bottle marked with the white tape does the signal lamp briefly light up for a container without vacuum.
Avoid product recalls even before the goods leave production - with reliable vacuum inspection systems from KoCoS.