Salvagnini S4 Sorting and Stacking System

The Salvagnini S4 is an automated sorting and stacking system designed to integrate with Salvagnini punch presses and laser cutting machines, automating the downstream material handling operations that are typically the bottleneck in unattended sheet metal production. When CNC punch presses and laser cutters produce finished parts from nested sheets, those parts must be sorted from the skeleton (the remaining sheet frame), stacked in job-organized piles, and prepared for downstream operations. Without automation, this sorting and stacking process requires continuous operator attention, limiting the extent to which punch and laser cells can run unattended. The S4 eliminates this constraint by automatically handling finished parts from the punch press or laser cutter output.

The S4 uses a suction-cup gripper system on a CNC-controlled gantry to pick individual parts from the punched or cut sheet as they are produced, sorting them into designated stack positions based on part identity and job assignment. The system reads part identification from the CNC program and directs each part to the correct stack bin, maintaining job separation even when multiple jobs are nested on the same sheet. Stack positions are configurable for part size and can accumulate substantial quantities before requiring operator intervention to clear, enabling extended unmanned production windows.

Salvagnini's S4 is engineered specifically to complement the Salvagnini punching and laser ecosystem. It connects to Salvagnini's OPS (Organic Production System) manufacturing management software, which provides part program data, job sequencing, and stack assignment instructions in real time. This tight integration with OPS means the S4 operates as a coordinated component of a Salvagnini flexible manufacturing cell rather than a generic downstream handler, enabling part flow management across the entire punch-laser-sort-bend sequence under unified control.

For fabricators investing in lights-out or minimally attended punching and laser cutting, the S4 addresses one of the most significant practical barriers to extended unmanned operation: skeleton management and part sorting. Without automated sorting, a punch press or laser cutter producing mixed-job sheets requires an operator to manually break out, identify, and sort parts, typically every 15-30 minutes depending on sheet size and part density. The S4 shifts this labor entirely to automation, allowing a single operator to oversee multiple machines across extended shifts rather than being tied to one machine for continuous part sorting.

The Salvagnini S4 is sold as part of integrated Salvagnini automation cells and is priced in the $150,000-$350,000 range depending on gantry span, stack position configuration, and integration requirements. For fabricators building a full Salvagnini FMC (Flexible Manufacturing Cell) combining a P2lean or other Salvagnini punch press with an L5 fiber laser and downstream bending on the P4lean, the S4 completes the automated material flow from raw sheet to sorted, job-organized parts ready for bending.