Pallet changes
Every cycle needs a pallet in and a pallet out. The handling, not the press, usually sets the real rate.
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A QT4-15 forms four standard blocks per mould cycle. At the fifteen-second cycle its own manufacturers publish, the arithmetic caps it at 960 an hour before a single pallet change, mix batch or shift break.
Do the arithmetic
The published figure of 8,000 pieces in an 8-hour shift is 1,000 an hour. A separate listing for the same model code claims 2,880 an hour, three times the ceiling, presumably for a smaller block without saying so.
We do not need to call anyone dishonest. We need to show the arithmetic and ask for the real operating rate.
Read it properly
Every cycle needs a pallet in and a pallet out. The handling, not the press, usually sets the real rate.
The mixer has to keep up. A press waiting for mix is a press at zero.
Eight hours of shift is rarely eight hours of pressing.
At 70 to 85 per cent of the ceiling, expect roughly 670 to 820 blocks an hour on a good day.
Ask the factory for the operating rate they will write into the acceptance criteria, not the rate in the brochure.
If your business case needs 1,000 an hour, this is the wrong machine and you have found out for free.
Contact
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