Medicinal herb warehouses usually manage a wide range of product categories, batch numbers, packaging types, and storage requirements. From raw herbs and decoction pieces to small-package finished products, warehouse operations often involve frequent inbound, storage, picking, checking, and outbound tasks.
Traditional person-to-goods picking depends heavily on manual searching, repeated order checking, and operator experience. As SKU quantity grows, this model can easily lead to low efficiency, picking errors, delayed information updates, and weak batch traceability.
To solve these challenges, DELIECN applies the Tote Four-Way Shuttle Robot as the core equipment for high-density tote storage and goods-to-person picking. In the medicinal herb warehouse case, the system used totes sized 600 × 400 × 300 mm, with a load capacity of 30 kg per tote. The tote AS/RS was configured with 10 tote four-way shuttle robots, 5 tote lifts, and a two-level loop tote conveyor system, reaching a system capacity of 300 totes per hour.
Why Tote Four-Way Shuttle Robots Fit Medicinal Herb Warehouses
Medicinal herb warehouses are not only storage spaces. They are also batch management centers, quality control points, and order fulfillment hubs.
A single warehouse may handle hundreds of herb varieties, multiple packaging specifications, and thousands of SKUs. In the case study, the warehouse involved around 500–600 herb categories, around 400 commonly used herbs, and more than 3,000 SKUs based on incomplete statistics.
This type of operation is highly suitable for tote-based automation.
Compared with pallet storage, the tote four-way shuttle system is better suited for:
Small-package medicinal herbs High-SKU storage Frequent inbound and outbound tasks Batch-based inventory management Goods-to-person picking Valuable herbs requiring refined control Traditional Chinese medicine decoction pieces Formula granules and small-order fulfillment
For large-batch materials, pallet AS/RS can handle full-pallet storage. For small-batch, multi-variety, and high-frequency picking, the tote four-way shuttle robot becomes the key equipment.
From "Person-to-Goods" to "Goods-to-Person"
Before automation, workers needed to walk to shelves, search for herbs, check order information repeatedly, pick materials manually, and then sort and pack them by customer. This created a heavy workload, low picking efficiency, and a higher risk of errors.
With the DELIECN tote four-way shuttle system, the workflow changes completely.
The system automatically stores totes in high-density racking. When an order is released, the WMS generates the task, the WCS schedules the shuttle robots, and the tote is delivered to the picking station through lifts and conveyors.
Operators no longer need to search through shelves. The required tote comes directly to the picking station.
This goods-to-person model helps:
Reduce walking distance Shorten picking time Improve order response speed Reduce manual searching Lower picking errors Improve operator comfort Support batch traceability
For medicinal herb warehouses, this is especially important because each order may involve different herbs, specifications, batches, and customer requirements.
High-Density Tote Storage Without Fixed Aisles
The DELIECN Tote Four-Way Shuttle Robot can move freely inside the rack system. It is not limited to a single fixed aisle. This allows the warehouse to use space more efficiently and increase storage density.
In the case study, the tote shuttle AS/RS adopted a double-deep tote rack structure with a rack height of about 15 meters. The system was designed for compact storage, fast access, and future expansion.
This makes the solution suitable for warehouses where floor space is limited but SKU quantity continues to grow.
The system can also reserve expandable tote storage areas, allowing the customer to increase capacity later as the business grows.
Accurate Tote-Level Inventory Management
Medicinal herbs require strict control over product name, specification, origin, batch, quantity, and storage status. Manual records can easily cause information delays or mismatches.
With the tote four-way shuttle system, each tote can be managed as an independent inventory unit.
During inbound operation, the tote is checked for:
Barcode information Weight Profile Material information Batch information Storage rules
After verification, the system assigns a unique identification code and stores the tote in the proper location. The WMS records the full process, while the WCS coordinates shuttle robots, lifts, and conveyors for execution.
This improves inventory visibility and supports accurate batch management.
Double-Level Tote Picking Line for Faster Order Fulfillment
The DELIECN solution also integrates a double-level tote picking line.
The upper conveyor line is used to transport totes waiting for picking. The lower conveyor line handles picked materials and empty tote return. This structure improves space utilization, reduces unnecessary handling, and keeps the picking area clean and organized.
At the picking station, the system can be equipped with:
Operation terminals Large-screen picking prompts Barcode scanning Weight verification Light-guided picking Photoelectric detection Multi-dimensional checking
These tools help prevent wrong picking, missed picking, and batch confusion.
For medicinal herb order fulfillment, this is a major advantage. The system not only improves speed, but also strengthens quality control and traceability.
WMS+WCS: Making the Shuttle System Smarter
The tote four-way shuttle robot is not just a standalone machine. Its value comes from system-level coordination.
In the DELIECN solution, WMS manages inventory, order tasks, batch rules, and storage strategies. WCS schedules the tote shuttles, lifts, conveyors, and picking lines.
The system can coordinate:
Inbound task creation Storage location allocation Tote movement Lift scheduling Goods-to-person picking Outbound confirmation Inventory update Exception handling
This enables a closed-loop process from inbound storage to order picking and outbound confirmation.
For medicinal herb companies, this means warehouse operations become more visible, controllable, and traceable.
Application Results
After the automated warehouse was implemented, the medicinal herb supplier achieved a significant improvement in storage and picking performance.
The storage capacity increased from about 400 tons to about 800 tons. Daily throughput remained stable at around 20 tons per day. The operation changed from person-to-goods picking to goods-to-person picking, reducing labor input and improving picking efficiency. The original manual picking mode required more than 10 workers, while the automated system required about 5 people for inbound, outbound, and picking operations.
The tote shuttle system reached about 300 totes per hour, supporting high-frequency picking and efficient small-batch order fulfillment.
Why Choose DELIECN Tote Four-Way Shuttle Robot?
The DELIECN Tote Four-Way Shuttle Robot is designed for warehouses that need higher storage density, faster picking, and more accurate inventory control.
For medicinal herb storage and picking, it brings value in five key areas:
High-density tote storage Fast goods-to-person picking Accurate tote-level inventory control Batch traceability Flexible expansion for growing SKU volume
It is especially suitable for industries with many SKUs, frequent picking tasks, strict traceability requirements, and limited warehouse space.
Conclusion
For medicinal herb warehouses, the key challenge is not only storing more goods. It is storing more SKUs, picking faster, reducing errors, and keeping every batch traceable.
The DELIECN Tote Four-Way Shuttle Robot provides a practical solution for this challenge.
By combining tote shuttle robots, tote lifts, double-level conveyors, goods-to-person picking stations, WMS, and WCS, the system helps medicinal herb companies build a more efficient, accurate, and intelligent warehouse.
For companies seeking to upgrade from manual shelf picking to automated, traceable, and high-density storage, the tote four-way shuttle system is a strong path toward modern warehouse operations.
