Finishing & Screen Printing
The Listo stacker: for careful and controlled stacking at full press speed
Tuesday 03. June 2008 - Listo is the name of the new high-performance stacker from Muller Martini for bundle processing at press delivery. At speeds of up to 100,000 copies per hour, it creates perfect cross-stacked and layered bundles.
The Listo is used for processing gravure and web offset products. After exiting from a press, trimmed or untrimmed print products are collected in-line into cross-stacked bundles at full press speed, then deposited in piles on pallets by automatic palletizing systems from Muller Martini. The compact new stacker is fitted with casters for mobility and can also be used off-line.
Intelligent control system
The Listo is controlled by the HMI (Human Machine Interface). Sizes and bundle make-ups can be entered quickly and easily on the clearly laid out display. It has a job management system with which the production parameters can be pre-set, allowing them to be stored and recalled as needed. Even fine adjustments made during bundle production can be saved, thus optimizing subsequent production runs. The automatic Amrys (automatic make ready system) presetting system on the turntable considerably reduces changeover times.
The Listo is simple to integrate into the higher level MACOS control unit. MACOS (Master Control System) visualizes the complete press delivery system as a graphic and is an interface to the press and the delivery machines. Connection to an in-house network is possible with a workflow controller, for example CIP4-compliant (JDF/JMF).
Careful and controlled stacking
In the pre-stacking hopper, the products are safely supported by a fork. A layer lift transports the pre-stacked bundles to the servo-driven turntable. The minimum product drop from the stack unit to the turntable unit ensures that the bundles are perfectly aligned copy by copy and then cross-stacked and layered.
Bundles are conveyed by means of a servo driven, lowerable pusher which is based on a new output principle in this stacker. This reduces cycle times and pushes the bundles carefully and with control. Deliveries can be fitted to the left or right. A roller slide delivery or a belt delivery with air table are possible.