The Challenge of High-Stack Corner Trimming Trimming round corners on thick stacks of cards, paperboards, and book blocks has long been a challenge for finishing departments. Traditional corner trimmers are limited to stack heights of 50‑80mm, forcing operators to split jobs into multiple passes – a slow, inconsistent process that often results in mismatched corners and visible stacking marks. The HX120 Automatic Four‑Corner Round Trimming Machine breaks through this limitation with an industry‑first maximum trimming height of 120mm. This single innovation doubles the capacity of conventional machines and dramatically reduces handling time for high‑volume jobs.
HX120 Automatic Four Corner Round Trimming Machine
Innovative Dual‑Sequence Trimming for Uniform Results When trimming thick stacks with a standard one‑pass machine, the corners farthest from the cut often shift or deform, leading to uneven radii and burrs on the bottom layers. The HX120 solves this with a patented "dual‑sequence trimming" process. The machine first trims two corners on one side of the stack, then precisely repositions the material using a servo‑controlled indexing system to trim the opposite two corners. This two‑step approach ensures that each corner is cut independently with optimal pressure and alignment, virtually eliminating irregularities and burrs – even on stacks up to 120mm thick. The result is perfectly uniform, smoothed‑edge round corners across every single piece in the stack.
High‑Power Pneumatic System for Stable, Safe Operation The HX120 is driven by a high‑power pneumatic system that delivers consistent cutting force across the full 120mm trimming height. Unlike mechanical presses that can lose precision over time, the pneumatic system provides smooth, repeatable pressure cycle after cycle, ensuring stable operation and extended tool life. The machine features automatic feeding with precise stack positioning, reducing operator intervention and minimizing the risk of misalignment. Enhanced safety interlocks and dual‑hand controls protect the operator during the trimming cycle, making the HX120 suitable for high‑volume production environments where both speed and safety are priorities.
Exceptional Capacity and Precision The HX120 handles a wide range of stack sizes, from a minimum of 120×60×5mm to a maximum of 640×220×120mm. This means it can trim everything from small card decks to large paperboard stacks for packaging or book covers. The machine operates at a speed of 8‑10 stacks per minute – significantly faster than manual or split‑pass methods. Changeover between different product sizes takes just 10 minutes, making the HX120 practical for both long‑run and mixed‑job production. With a trimming precision of ±0.1mm, the machine delivers the accuracy that card manufacturers, binderies, and packaging converters demand.
The New Standard for High‑Volume Corner Trimming For card manufacturers, paperboard converters, bookbinders, and packaging producers that routinely trim round corners on thick stacks, the HX120 Automatic Four‑Corner Round Trimming Machine sets a new industry benchmark. Its 120mm trimming capacity eliminates the need for splitting stacks, reducing labor and processing time by up to 50%. The dual‑sequence trimming process ensures uniform, burr‑free corners on every piece. The pneumatic drive provides reliable, safe operation with minimal maintenance. With a 10‑minute changeover, 8‑10 stacks per minute throughput, and ±0.1mm precision, the HX120 is the corner trimming solution that keeps pace with high‑volume production demands.
HX120 Automatic Four Corner Round Trimming Machine
