Stahlfolder BH/CH.

Three feeder variants available – adapted to different demands

With flat pile feeder, round continuous feeder and pallet feeder, the Stahlfolder BH/CH folding machines offer the required feeding system for every demand.

• Flat pile feeder: The flat pile feeder is designed for frequently changing fold jobs with small to medium run lengths. It ensures a perfect sheet separation and is easy to operate. Further advantages are the little space requirements and the low investment costs. The optional preloading device allows the operator to prepare follow-up jobs already while the current job is running. For this purpose further mobile pile tables, which only need to be exchanged during the set-up, can be loaded on the folder or already on the cutting machine. This minimizes unproductive downtimes.
• Round continuous feeder: The round continuous feeders process different kinds of paper in non-stop operation in medium to large runs. Thanks to the shingled loading of the sheets on the extra-long loading table, this feeder is particularly suitable for wavy, pre-folded, perforated or punched products. Due to this non-stop feeding the daily production is approx. 20% higher compared to the flat pile feeder. The ergonomic loading height of 94 centimeters is pleasant for the operator and supports a quick loading.
• Pallet feeder: The pallet feeder is the feeder with the lowest expenditure for the operator. Sheets do not need to be pre-piled – in fact the pallet can pull from the delivery of the press directly into the feeder of the folding machine. This reduces the setup time which allows the operator to fully concentrate on the folding and unloading of the sheets. This way the performance of the folding machine can be fully used in one-man-operation. The maximum pallet height of 1.20 meters is ideally matched to the delivery height of a typical sheet-fed printing press.

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Modular control system MCT for easy operation of your folding machine

The graphical user interface makes the operation easy. With Touchscreen and QuickSetup all necessary settings are done with just four clicks.

The MCT control system consists of a central control panel at the feeder of the folding machine and integrated control functions, both in the following units as well as in the delivery which offer complete control over the most important machine functions. In the learning mode the sheet length is measured and the suction cycle length and sheet gap are automatically set and continuously monitored.

• Machine operation: The user interface of the control panel works with self-explanatory symbols which are clear and explicit regarding function and operation.
• Central Touchscreen: Automated Stahlfolder BH/CH folding machines are equipped with a central touchscreen. The graphical user interface with intuitive symbols makes the operation of the machine extremely simple. A setup assistant leads the operator through the setting process step by step. The most common fold programs can easily be selected from an integrated fold type catalogue. The folding machine can be set with data from the workflow as well.
• The operating mode QuickSetup reduces the range of the control system to the most important settings. Only the sheet format, grammage and fold type must be selected to setup the folding machine. This way you do not only avoid setup errors but your folder is ready for production with only four clicks.

A gluing attachment and image recognition systems can be integrated at the alignment table. This increases the added value and guarantees good quality and process reliability.

Buckle plate folding units: Precise fold accuracy and short setup times

The Stahlfolder BH buckle plate folders offer maximum flexibility for most different folding applications. The single folding units are mobile and can be positioned depending on the fold type. Thanks to the uniform MCT control system of Heidelberg a Stahlfolder BH configuration can also be combined with other Stahlfolder components like modern delivery systems or a mobile knife fold unit.

• Folding roller drive: The external folding roller drive is equipped with hardened and helically toothed gears, thus providing an extremely precise and nonslip transportation of sheets. The fold quality remains continuously high during the complete production run.
• Manual or motor-driven adjustment of folding rollers: the setting of the folding roller gaps is available either manually with the proven FESTA settings or motorized.

Cross-fold unit: Optimal capacity on little space

• Cross-fold configurations: The Stahlfolder CH machines are available in the cross-fold variants KL, KTL or – with a working width of 78 centimeters - also as KLL or KTLL version.
• Folding knife: The folding knife is released by a light sensor which is activated by the trailing sheet edge, thus avoiding misfolded sheets in the delivery. The reinforced knife version ensures a long service life and constantly high fold quality. The segmentation of the first folding knife even allows for a processing of small formats with minimum sheet gap.
• Ergonomic operation: The cross-fold unit is equipped with a central control panel which is mounted on a swivel arm. It allows for an easy operation and good accessibility to all adjustable parts in the cross-fold unit.

Cross-fold unit KT in working width 56

The cross-fold unit of the Stahlfolder CH 56 KT auto with motor-driven buckle plate after the folding knife is completely automated – the first time in format range 50 × 70 cm. After entering the job data at the touchscreen all necessary parameters take their positions in a motorized way, both in parallel and in cross-fold section. This reduces your setup times. In larger circulations you score with the constant high output of the Stahlfolder CH 56 KT auto. This makes you very successful also with a hybrid job structure consisting of small runs from digital presses and larger circulations from conventional offset presses.

Extra-Grip polyurethane (PU) folding rollers consist of a steel core with embedded PU rings. The soft PU material has better grip force, provides excellent register accuracy, prevents marking, and supports fully parallel, slip-free paper transport.

The ExtraGrip folding rollers with soft PU and optional hard PU avoid markings and ensure an exact, nonslip sheet transport even with demanding papers.

Different buckle plates offer suitable equipment for every application.

• Buckle plates with swing deflector: Stahlfolder BH/CH folding machines are equipped with buckle plates with swing deflector by default. They can easily be changed into the swing deflector mode. The buckle plate need not be dismantled from the machine - it is just slightly pulled back and the swing deflector is turned. This procedure saves time and avoids damages.
• Automated combination buckle plates: In the positions 1 to 6 automated combination buckle plates can be used as an option. They are equipped with two motors and precise toothed belts to change the position and the angle of the sheet stop. The buckle plates are controlled via the central touchscreen at the feeder. Repeat jobs can be set-up more quickly as stored settings can be retrieved from the memory.
• Gate fold buckle plate: The pneumatic gate fold buckle plate allows for a high number of cycles up to 15.000 cycles per hour – with constantly high fold quality. The digital control unit ACC 2.4 controls the switch points of the pneumatic gate fold buckle plate precisely, individually and independent from the fold speed. The pneumatic gate fold buckle plate allows for fold lengths of 6.5 centimeters.

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Slitter shafts to enlarge your process steps

The Stahlfolder BH/CH folding machines are equipped with a pair of rear-mounted slitter shafts by default. This allows you to crease, perforate and cut in the folding machine which increases the fold quality and allows for multiple-up production.

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