HX120 Automatic Four-Corner Round Trimming Machine High Precision Corner Cutting for Cards and Paperboards

In modern printing, packaging, and bookbinding production, round corner processing has become an essential step to enhance product appearance, safety, and professionalism. Products such as cards, tags, paper boxes, hardcover books, notebooks, and packaging boxes all require neat, consistent, and smooth round corners. However, traditional corner rounding machines often face limitations in trimming thickness, uneven corner sizes, burrs, and low efficiency, especially when processing stacked materials or thick paperboards. Many enterprises also struggle to meet strict material tolerance standards, resulting in high rejection rates and increased production costs. The HX120 Automatic Four-Corner Round Trimming Machine is designed to solve these pain points, with its industry-first 120mm trimming height, innovative dual-sequence trimming, and stable pneumatic system, providing a high-precision, high-efficiency solution for automatic four-corner rounding.

HX120 Automatic Four Corner Round Trimming Machine

The most outstanding advantage of the HX120 is its industry-leading maximum trimming height of 120mm, which greatly expands its application range. Most conventional corner rounding machines can only handle thin single-sheet materials or low stacks, while the HX120 supports up to 120mm trimming height, allowing users to process stacked cards, thick paperboards, hardcover book covers, rigid boxes, and other high-thickness materials in one pass. This ultra-high trimming capacity significantly improves production efficiency, reduces repeated operation, and meets the requirements of diversified and thick material processing in modern printing and packaging lines.

The innovative dual-sequence trimming technology ensures uniform and accurate round corners. Unlike traditional single-step or four-corner simultaneous cutting, the HX120 adopts a more precise dual-sequence structure: it first trims two corners on one side, then automatically and accurately repositions the material to trim the opposite two corners. This step-by-step precision control effectively solves the common problems of uneven corner sizes, asymmetric radian, and position deviation. Even for materials with strict tolerance requirements, the machine can maintain high consistency, ensuring each product has standard, smooth, and beautiful round corners.

The HX120 delivers smooth, burr-free trimming results to improve product quality. The combination of high-precision tool sets, stable pneumatic pressure, and orderly dual-sequence action ensures clean cutting edges without burrs, flashes, or rough surfaces. This is especially important for high-end cards, exquisite packaging boxes, and premium book covers, as smooth edges directly enhance product grade and user experience. By eliminating defects such as irregular corners and burrs, the machine reduces rework and waste, helping enterprises improve product qualification rate and brand image.

Driven by a high-power pneumatic system, the machine ensures stable operation, automatic feeding, and high safety. The powerful and stable pneumatic system provides consistent driving force for feeding, positioning, and trimming, ensuring smooth and reliable operation even under long-term continuous production. Automatic feeding reduces manual intervention and labor intensity, while the complete safety protection design complies with international industrial safety standards, preventing misoperation and injury risks. Stable performance, low failure rate, and easy maintenance make the HX120 a durable and cost-effective choice for mass production.