The gas cylinders pneumatic test line is an automatic line that performs the following operations:
The pneumatic test is an important test, especially for cylinders created from the tube. The test is carried out in the central area of the bottom of the cylinder and is carried out by the semi-finished product (glass), that is, before closing the cylinder with the ogivation operation.
The gas cylinders pneumatic test line begins with a programmed belt which, in addition to transporting the cylinders in an orderly manner and without noisy shocks, has the function of accumulation.
The cylinders are picked up from the belt by grippers which are mounted on an upper gripper carriage. There are two upper gripper carriages, the first serves the first part and the second the last part and together they cover the whole area of the testing line. The pliers then pick up and serve each machinery inside and are sized to be able to safely take each cylinder format within the range produced by the customer.
The first operation of the cycle is to prepare for the pneumatic test: the bottom of the cylinder is milled internally to eliminate the bud of material and slag formed during forging. The GOMG milling machine is designed to mill any cylinder format within the range produced by the customer. It can mill cylinders up to 2500mmm in length and 406mm in diameter.
The pliers then carry the cylinder on a tilting roller conveyor where it is raised vertically to drop the chippings created by the milling by gravity. Now that the cylinder is milled and cleaned, it is ready for the pneumatic test.
In the line, the number of test stations depends on the productivity requested by the customer, in the case documented by the photos, it was necessary to insert two stations.
The test is carried out up to 300 Bar of pressure and can be semi-automatic or fully automatic.
At the end of the test, the pliers take the cylinders and unload them on a programmed output belt.