The V folding machine is the core front-end equipment for box-packaged / soft tissue paper rolls. In the industry, it is also known as the tissue paper inter-fold machine. It specifically processes large paper rolls into V-shaped interlocked tissue paper stacks, with one sheet being pulled out at a time (pop-up effect). The rear end is directly connected to the large rotary cutting machine + packaging machine, enabling the production of household box-packaged tissues, commercial and catering soft tissues, and business hand towels through an entire automated production line.
Folding principle: Each sheet of paper is folded into a V shape, with the front and back sheets nested together, forming a continuous interlocked paper stack. Different from the Z-fold or triple-fold structure, this design is simple in structure, stable in speed, and has lower material costs.
Six core components of the entire machine
1. Spooling frame unit (double spooling standard)
2. Two sets of tensioning spooling frames, suitable for 3-inch paper core large paper rolls, with a maximum paper roll diameter of 1200–1500mm;
Magnetic powder tension control, servo synchronous paper feeding, thin paper and multi-layer paper material feeding without stretching, continuous paper supply;
Automatic spooling connection device, reducing downtime for spooling and material replacement.
2. Embossing and composite unit (optional / standard)
Steel-on-steel embossing rollers, rubber rollers, 2–5 layers of original paper composite and pressurization, no separation between layers;
Can be made into star patterns, grids, dots, etc., with clear embossing and soft feel;
Rollers are independently servo-speed-adjustable, multi-layer paper is synchronized without misalignment.
3. Longitudinal cutting unit
Multiple sets of spiral cutting knives, cutting wide-width original paper into multiple narrow-width paper paths (2/3/4/5/6/7 models), one machine simultaneously produces multiple rows of paper stacks, improving production capacity; Knife holders can be quickly adjusted to widen and switch the finished product size.
4. Vacuum V-folding main unit (core equipment)
Vacuum suction folding rollers, folding suction valve group, relying on negative pressure suction and air removal folding, forming standard V-shaped shape;
Double folding rollers are synchronized transmission, nylon folding suction nozzles are wear-resistant, ensuring each sheet of paper is centered and folded;
Spiral cross-cutting knife roller: cutting single sheets of paper at a uniform speed, smooth cuts without burrs or overlapping.
5. Counting and stacking output unit
Dual modes of photoelectric counting and ink marking counting, setting the number of sheets per package for automatic layering;
Servo stacking mechanism, neatly transporting the paper stack to the output conveyor belt, smoothly feeding into the feed inlet of the large rotary cutting machine, achieving fully automated production line.
6. Electrical control and pneumatic system
PLC + 10-inch touch screen full servo control, one-click setting of folding width, speed, and number of sheets per package;
The entire machine's servo synchronization linkage, independent adjustment of tension, folding, counting, and stacking parameters;
Pneumatic control system, 0.5–0.7MPa air source, cylinder control embossing, stacking, and paper guard plates;
Automatic fault alarm, paper break stop, paper shortage reminder, safety door interlock protection.