What is HDP TST Digital Three Side Trimmer

HDP TST Digital Three Side Trimmer is an advanced single-knife finishing solution engineered specifically for the dynamic demands of digital and short-run book production. Utilizing a single knife combined with automated pile rotation, it sequentially trims the top, fore-edge, and bottom of the book block. Its "Zero Makeready" design eliminates the need for manual tool adjustments, enabling instant format changes and making it the perfect solution for high-mix, low-volume manufacturing environments where efficiency is paramount.

HDP TST Digital Three Side Trimmer

True automation defines the HDP TST workflow. The machine supports intelligent data input via a color touchscreen, barcode scanning, or upstream JDF integration to retrieve setup data automatically. This capability allows for true "book-of-one" production, where the machine can switch formats instantly between cuts. Additionally, it features automatic thickness detection, allowing for the continuous processing of books with varying thicknesses (up to 51mm) without stopping, provided the trim dimensions remain constant.

The knife also descend in both directions - from left-to-right and right-to-left - to avoid the possibility of cover tears at the spine.

To ensure superior finishing quality, the trimmer employs precise servo motors for knife positioning and a servo-controlled hydraulic clamping system. This intelligent clamping adjusts pressure automatically based on book size to ensure markless trimming, protecting sensitive digital prints. Uniquely, the knife is designed to descend in both directions—from left-to-right and right-to-left—to prevent cover tears at the spine, ensuring a pristine, professional finish for every unit.

Versatility is a core strength of the HDP TST, making it suitable for a wide array of applications including perfect bound books, sewn book blocks, children’s board books, and notebooks. It can be equipped with an optional corner rounding function to further expand production capabilities. The system is highly adaptable and can be configured with an automatic feeder for standalone operation or docked with a conveyor line for a seamless, fully automated inline workflow.

Designed for operational safety and labor efficiency, the machine features a fully interlocked safety cover system and a robotic arm for material transport, allowing for unattended operation once production begins. With a throughput of 240-300 cuts per hour and a robust 8KW power system, the HDP TST frees operators to manage other binding tasks, significantly optimizing labor allocation while delivering consistent, high-precision results.