The key requirement was that the bottle had to be rotated at a consistent smooth rate in order to maintain a high quality print. In addition the 200 kg bottles have to be loaded from floor level so in order to avoid specialised lifting equipment it was important to keep the overall height of the base as low as possible.
RIS 285 timing belt ring fitted into the base with a location ring to mount the bottle to. The timing belt ring was chosen so that a smooth constant rotation of the ring would be achieved with no “lost motion”. Size 25 double row V groove bearings were used 4 per ring to support the load of 200kg. The double row version has improved rigidity over the twin V groove bearing often used in similar applications where lighter loads are involved. The whole arrangement was fitted into a base height of 45mm making manual loading possible with the aid of a small ramp.
1 x RIS285 TB timing belt ring, 1 x TPAT5VK6T40 Timing pulley, 1 x 16AT5VKS Timing belt, 2 x RSJ25CDR, 2 x RSJ25DEDR V groove bearings.
A quiet smooth rotational movement achieved through the use of standard catalogue parts from the PRT2 catalogue. Print quality has been improved and the throughput of bottles is much faster since the introduction of a bespoke labelling machine.