Secure Hold Mandrels (SH-mandrels)
The secure hold of SH-mandrels prevents any movement of sleeves or tubes on the mandrels on their way through an ISIMAT tube printing machine. Pressurised air expands a sleeve very slightly and creates an air cushion around an SH-mandrel while the sleeve is pushed onto the mandrel in the loading station. The sleeve is held securely on the mandrel once the air is switched off. Pressurised air is switched on again during unloading. SH-mandrels can handle sleeve/tube batches that have variations in their inner diameters; the variations can be up to 0.25 mm, depending on the nominal diameter.