Reliable marking of leak-proof lines for automotive air conditioning systems

At the end of the production process air conditioning lines are subjected to a pressure test to check whether or not they are leak-proof. Schreiner ProTech designed a solution for this process that reliably identifies defective lines by means of a labeling station which is integrated into the test equipment. While pressure-testing the lines, the testing unit automatically sends a signal to a printer if the line satisfies the stringent requirements. Only if the line has been found to be leak-proof the printer prints a label which is immediately wrapped around the air conditioning line as a flag. If the line is not okay, the testing process is automatically stopped and the defective part segregated. The label also contains key data in the form of a barcode for identification and tracking purposes. The readability of these codes is immediately checked by a scanner.

The integration of the labeling into the testing process results in a complete, easy to operate system which enables efficient and reliable quality inspection