Flexible folding machines
meet individual requirements.
Explore the full spectrum of folding with Stahlfolder folding machines. Take advantage of the additional opportunities to sustainably expand your production range and successfully stand out from your competition with the flexible folding machines from the Stahlfolder TH/KH series.
Our Stahlfolder TH buckle plate machines and Stahlfolder KH combination folding machines are consistently modular in design. This allows you to expand your range with specialized applications, to enter new areas of business, and to add more value as needed. This will ensure your success on into the future.
The new Stahlfolder TH 82-P and KH 82-P folding machines are specially designed for the requirements of industrial signature production. Increase your output by up to 50 percent using the shingled folding method. The folding quality and process stability are retained, because there is no need to increase the machine speed.
Regardless of the challenges presented by your folding jobs, you can rely on these machines. Extensive automation options and the high machine availability of our Stahlfolder TH/KH folding machines gives you peace of mind when it comes to production planning. They handle different folding jobs economically, with short throughput times and in constantly high quality. That is a good thing. For you and your customers.
Four feeder variants available – adapted to different requirements
With four feeder variants available, from flat pile feeder, round continuous feeder or pallet feeder up to the high-capacity PFX pallet feeder, there is an ideal configuration for each requirement. The ball-free AirstreamTable provides a very easy setting, and ensures mark-free sheet alignment.
The FFH flat pile feeder is designed to be used with small to medium run lengths. The flat pile feeder is an economic feeder variant at manageable investment costs. Further advantages: the little space required and the short set-up times. The pre-stacking device allows the operator to already prepare the follow up jobs while the current job is still running. For this purpose further mobile stacker boards can be loaded on the folding machine or already at the cutting machine which must just be changed during the setup process. This minimizes unproductive idle times.
The RFH round continuous feeder is particularly suitable for medium to large circulations. You can also process pre-folded, pre-perforated or pre-punched products with this feeder variant without any problems. The lowest loading height in its category allows for ergonomic loading. The advantage of the round continuous feeder: It allows for a high performance by non-stop-operation as the feeding need not be interrupted. Due to the low pile height of eight centimeters it is also possible to process bulky, warped sheets without any problems.
The PFH pallet feeder is mainly used for medium to large circulations as well as for large formats. The sheets on the pallet to be folded are run into the feeder by means of a pallet truck directly from the printing press with no manual intervention. All in all, the pallet feeder provides high production capacity – with shortest interruptions for feeding by pallets. The physical strain for the operator is low even if large signature formats have to be processed.
With the PFX pallet feeder it is possible for the first time to feed the sheets into the folder in an overlapping sheet stream, no longer individually and with sheet gap as before. Due to the overlapping of the sheets their infeed length reduces by up to 30% and more sheets can be produced at the same machine speed.
The PFX-feeder is optimized for large circulations in order to achieve a more stable production even with sensible materials and higher machine speeds. Especially for the Stahlfolder TH/KH 82-P folding machines and the Stahlfolder TX 96 folding system, the PFX-feeder is the start of a perfectly matched folder for top productivity.
Process optimization by sheet separation device
The sheet separation device Tremat provides ventilation and pre-separation of the fed sheet piles at the flat pile feeder and pallet feeder. High efficiency with sheet separation by cycle-independent operation principle ensures the high productivity of the folding machine - at clearly reduced setup time. Operation and settings of the Tremat are easy and uncomplicated. The blowers can be spun around their vertical axis which optimizes the separation especially with large format sheets. With its suspension laterally beside the paper stack the Tremat can easily be tilted backwards which improves the accessibility and makes the loading easier.
Markfree alignment by AirstreamTable
The AirstreamTable allows for an exact alignment of the sheets without balls and thus without marking risk. The suction wheel transfers the separated sheets from the feeder to the transport belt of the transfer table. This guides the sheets along the rule to the first buckle plate unit. In doing so the sheets are kept on the belt by a low-pressure created by the air stream and can easily and precisely be aligned along the infeed side-lay.
- The suction power is adjustable and can be stored for repeat orders. Thus it can be recalled at any time and can also be altered during running production.
- The suction power of the suction belt is independent from the coverage of the transport belt.
- A wide range of papers can be processed smoothly.
Modular Control MCT (2)
Modular Control Concept: Your key to economy
The Stahlfolder TH/KH machines are controlled by means of a control in the feeder as well as by intelligent digital sequence controls in the folding units and deliveries. The graphic user interface allows for an easy operation. Direct keys are available for the main functions. Due to the modular construction of the control, the functionality of the machine can be enlarged by option kits up to maximum levels of automation. The new operation QuickSetup mode reduces the range of the control to the most important settings. Only sheet format, grammage and fold type must be selected to set up the machine. This does not only avoid set up errors but your folding machine is ready for production with four clicks only. It goes without saying that the professional mode remains available as well so that you can switch between the two operation modes.
- All machine settings can be altered from all control-sections.
- Learning mode and electronic setting mode for the simplest setting.
- Sheet travel monitoring for high production reliability .
- Central Touchscreen control-section with menu functions with automated Stahlfolder TH/KH folding machines
Additional Devices (3)
Additional devices individualize your products and increase your added value
Additional units like gluing device, water scoring, image inspection, barcode identification as well as sheet ejection can be integrated at the alignment table.
Sheet ejection with contact-free control
Besides the mechanical double sheet detector, a sheet ejection with contact-free double sheet monitoring is available for the Stahlfolder TH/KH. Based on an ultrasonic sound control, sheets lying on top of one another which were picked-up are recognized and actively ejected before they reach the first buckle plate unit. What is important: The sheet ejection is done during machine run and at full production speed. In case of a serial failure, i.e. several double sheets after one another, the machine is stopped before a lot of waste accumulates.
- Optional sheet ejection by means of blind sheet detector (only one side of the sheet is printed)
- Optional sheet ejection with image inspection (false or wrongly fed sheets)
Folding Units (4)
Modular machine concept and wide range of options
For the buckle plate units one to four, various working widths from 56 cm to 96 cm as well as an aligned number of buckle plates (2-8) are available. Combination folders unite the buckle fold with the knife fold principle.
Parallel fold unit
The parallel fold units of the Stahlfolder TH/KH folding machines are equipped with buckle plates with swing deflector or combination buckle plates – depending on the version – possibility of up to 8 buckle plates in the folding unit.
The cross carrier leads the signatures exactly into the following folding station. The oblique rollers are driven by toothed belts completely nonslip: This provides a continuous sheet transport and ideal fold accuracy. Due to the diagonally arranged transport rollers, the signatures are moved reliably to the register sidelay – at all speeds. With the automated Stahlfolder TH folding machines, the cross carrier is equipped with a rule with digital display of target and actual value. Here, the control calculates the setting position of the rule. The setting of the rule is done manually in a very simple way, the fine-adjustment is a lot easier thanks to the digital display and can be done very precisely.
With six versions of the cross-fold – from KL with two folding knives up to the complex cross-fold KTLL with three folding knives and integrated buckle plate – we offer you the suitable solution for any requirement.
Cross-Fold Unit KH Compact
The basic variant cross-fold unit KH Compact with the Stahlfolder KH 66 and 78 folding machines convinces by its ergonomic construction and good manageability. All areas of the cross-fold unit are well accessible, which makes corrections a lot easier: knife height, knife inclination, sheet stops and side stops can be adjusted without any tools at full machine speed and closed noise hood. The slitter shafts can be reached trouble-free at any time as well, thanks to an upper side rack which can be pulled back easily and a square bar which can be taken out.
- High number of cycles to increase the fold performance with constantly high fold accuracy
- Setup correction without interrupting running production
- Integration of additional process steps like creasing, perforating, edge trimming
Automated Cross Fold Unit KH
The automated cross-fold of the Stahlfolder KH 66 and KH 82 folding machines ensures you uncompromising quality and productivity in a wide range of applications. The constant sheet stop ensures that the signature is stopped, being controlled, and the sheet edges are not deformed. Additional guiding elements like the motor-driven side stops, the belts, the adjustment of which depends on the format and the pneumatically raise able pull wheels at the leading sheet edge transport the sheet exactly and avoid a bouncing back from the sheet stop.
The optional sheet ejection in the cross-fold avoids jams – a misfolded sheet is detected reliably and ejected without the knife being released.
Folding Rollers (5)
Top fold accuracy and markfree sheet guidance: the right folding roller technology for precise fold results
The distribution of steel and polyurethane rings with ExtraGrip folding rollers is designed in such a way that there is no crossover of steel segments with two folding rollers lying parallel. At the same time the drag force is essentially raised due to the number of polyurethane rings which was increased by approx. 30 % per folding roller. The effect: The rings work exactly in paper running direction so that excellent fold accuracy and an exact straightforward guidance of the signatures is achieved. ExtraGrip-folding rollers are available in two variants: As Soft-PU-ExtraGrip-folding rollers they cover a wide range of different papers above 50 g/m² ab, in Hard-PU-version they are especially suitable for the processing of bible paper.
Manual or motor-driven folding roller adjustment
For an exact setting of gaps of folding rollers and slitter shafts, the Stahlfolder TH/KH folding machines are equipped with the proven FESTA-folding roller adjustment. The adjusting knob is simply underlaid with the corresponding number of paper strips; these adjustments are transferred directly and free from play to folding rollers and slitter shafts.
As option the Stahlfolder TH/KH machines offer a motor-driven folding roller and slitter shaft space setting. Here, the paper thickness is measured by the sensor of the double sheet detector at the feeder. A previous stacking of paper to feed a learning sheet is not necessary for this. Following that, the control automatically does the setting of the folding roller gaps and the drag of the folding roller – considering fold type and paper features.
- ExtraGrip-folding rollers for markfree ideal sheet guide
- FESTA-folding roller adjustment for an exact setting of the gaps of folding rollers and slitter shafts
- Optional motor-driven adjustment of fold-type dependent folding roller gap and the paper dependent basic setting
Buckle Plates (6)
Buckle plates with swing deflector offer high functionality. Combination buckle plates, combination buckle plates in comfort version and motor-driven combination buckle plates convince by top flexibility. Special applications are possible by means of gatefold buckle plates.
Buckle plates with swing deflector and combination buckle plates
The first buckle plate of the Stahlfolder TH/KH is equipped with continuous sheet stop as well as with continuous buckle-plate lip. This ensures top fold quality even at high machine speeds. In the standard version buckle plates with swing deflector are used. Optionally combination buckle plates are available in which all important buckle pate settings like clearance, buckle space and pretension of the lower buckle-plate lip can be done during running production.
A further process optimization can be achieved by the additionally available motor-driven combination buckle plate. Depending on fold type and format the sheet stops of the motor-driven combination buckle plate are positioned and in case of angle alterations the fold length is compensated automatically. An absolute parallelism of the sheet stops is ensured with new orders, even in deflector position.
- Continuous sheet stop in the first buckle plate in standard
- Buckle plates with swing deflector for quick retrofitting
- Optional combination buckle plate for easy handling and easy operation
- Optional motor-driven combination buckle plates with high automation degree
Slitter Shafts (7)
Slitter shafts before and after the folding unit: Processes like creasing, perforating and trimming are possible
Front mounted and double rear mounted slitter shafts
Standard equipment is a simple pair of rear-mounted slitter shafts. Front mounted and double rear mounted slitter shafts with lift function are optionally available or can be retrofitted. This way, print shops can easily enlarge their range inline and thus differentiate from their competitors. The double rear mounted slitter shafts clearly optimize the cutting quality with the production of multi-ups in small formats. The slitter shaft lift which is standard integrated in this configuration offers easy accessibility to the first slitter shaft.
Slitter shaft lift in parallel fold
The optional lift for the rear mounted slitter shafts brings the whole slitter shaft component into an ergonomically favorable position for the operator. The access to the slitter shafts has been clearly improved. This makes the setting and changing a lot easier and reduces setup times.
Pressing Device (8)
Integrated pressing module for top fold quality
The automated pressing device for all automated Stahlfolder TH folding machines which is integrated into roller frame increases the fold quality and the piling capacity. It is positioned instead of the first pair of slitter shafts thus allowing the additional use of the second pair of slitter shafts for the use of various tools. The liftkit ensures an ergonomic access to the folding unit.
The pneumatic system provides sharp fold edges with folded products up to 3.5 mm thickness and reduces the trapped air in the signature for an ideal transfer of the signature to the following station.
With the automated Stahlfolder TH 56 there is an integrated, automated belt pressing module especially for working width 56 cm for a reliable transport and the pneumatic pressing of miniature folded products up to a minimum of 3.5 cm. The variant with additional, automated slitter shafts and transfer table is mainly used for the first stations, while the direct transfer into the delivery without using tools is sufficient for second stations.
Delivery Systems (9)
Wide range of deliveries: the optimum delivery for every application
Different delivery systems deliver the sheets after folding. The range of deliveries extends from simple stream deliveries to horizontal stack deliveries, all the way to highly productive stack deliveries. Some deliveries are equipped with pressing rollers for pressing the folded sheets on delivery. This increases folding quality, reduces the pile volume, and facilitates downstream postpress operations. Marking devices stagger the piles laterally, making it easier to remove the folded products. For multiple ups, the individual ups can additionally be separated from one another. Which delivery you use has a considerable influence on your overall system productivity. It needs to take the strain off the operator without slowing the folding machine down. We can offer you just the right delivery system for your Stahlfolder folding machine, based on the job, print run and folding machine output.
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