1. Project Background

Customer Requirements: A well-known hardware screw manufacturer needed to build a smart  Automated Storage and Retrieval System to meet the following requirements:

Storage Requirements: Over 10,000 SKUs (including screws, nuts, and washers of different specifications from M3 to M24), supporting multiple materials such as carbon steel, stainless steel, and galvanized steel;

Efficiency Goals: Average daily order processing of 15,000 orders, with a peak throughput of 30,000 items per day;

Compliance Requirements: Rust and moisture prevention (humidity ≤40%), oxidation prevention (nitrogen protection), compliant with RoHS environmental standards;

Cost Optimization: Reduce reliance on manual labor and lower the goods damage rate to below 0.2%.

2. Technical Highlights

Precision Handling of Small Parts:

The forks of the micro stacker are equipped with vacuum suction devices, suitable for screws smaller than M3;

The shelves are fitted with anti-vibration silicone pads and elastic limiters, with vibration amplitude ≤0.1g.

Rust and Oxidation Control:

The carbon steel screw storage area is equipped with a nitrogen inerting system (oxygen concentration ≤1%); with humidity sensors embedded in the shelves;

The stainless steel screw zone uses an anti-static epoxy resin coating (surface resistance ≤ 1×10⁶Ω).

Efficient Sorting Strategy:

The WMS merges batches by material and specification (e.g., stainless steel screws + galvanized washers in combined orders) to reduce the number of shuttle movements;

AGVs use a relay mode, improving cross-zone transportation efficiency by 50%.