Warehouse Automation Sand Table Model Production Case
Project Background
A large logistics company planned to showcase the automated workflow of its smart warehouse center and commissioned our team to produce a 1:50 scale sand table model. The client provided complete CAD drawings and equipment photos of the facility, requiring the model to accurately replicate key components such as the automated storage system, AGV robots, conveyor lines, and sorting systems, with a restoration accuracy of over 90%. The model would be used for long-term display in the company’s exhibition hall.
I. Production Process and Workflow
1. Drawing Analysis and Design Optimization
The provided CAD drawings were scaled down to 1:50, with special attention paid to critical dimensions such as shelf spacing in the automated warehouse, conveyor layout, and AGV navigation paths to ensure consistency with the real-world facility.
For details not specified in the drawings (e.g., surface textures, colors), supplementary designs were made based on the client’s reference photos to enhance visual realism.
2. Main Structure Construction
Warehouse Framework: Laser-cut 5mm acrylic sheets were used to precisely replicate columns, beams, and roof structures according to the CAD drawings. Seams were bonded with optical adhesive for structural integrity.
Shelving and Storage System: Shelves were constructed in layers using 1mm ABS sheets laser-cut to specifications. Pallets were micro-carved from solid wood and artificially aged to simulate wear.
Automated Equipment:
Stacker Cranes: The main body was 3D-printed in resin, with aluminum alloy micro-profiles used for lift rails to ensure smooth operation.
AGV Robots: Shells were 3D-printed to exact dimensions, with magnetic navigation modules installed on the chassis to follow the client’s predefined logistics routes.
Sorting Line: Conveyor belts were made of silicone, with hidden roller bearings. The robotic arms featured movable joints assembled from copper tubing and micro-motors.
3. Dynamic Function Implementation
The AGV navigation system was programmed according to the client’s provided paths, enabling obstacle avoidance and looped transportation.
The sorting line was driven by micro-motors to replicate real sorting actions, with adjustable speed to suit demonstration needs.
II. Material Selection
Building Structure: Exterior walls used matte PVC laminated panels to mimic concrete textures, while transparent sections employed 2mm PET film with etched metal window frames.
Mechanical Equipment: AGVs and stacker crane shells were made of UV-cured resin, while critical sorting components used copper alloy for durability.
Environmental Details:
The floor was covered with 0.5mm PVC flooring, laser-engraved with lane markings and safety signs.
Surrounding greenery was created using electrostatic flocking, with shrubs made from dyed sponge particles and trees featuring 3D-printed trunks paired with artificial foliage.
III. Post-Processing and Coloring
1. Painting Techniques
Equipment was base-coated in industrial gray (RAL 7035) per the client’s color chart, with the company logo applied via hydrographic transfer on AGV roofs.
Weathering effects: Black pastel powder was lightly brushed onto conveyor rollers and high-contact shelf areas to simulate operational wear.
2. Lighting and Markings
Warm white LED strips inside the warehouse replicated real lighting conditions, while magnetic induction lights embedded along AGV paths illuminated during operation.
Safety signs and equipment labels were screen-printed in precise locations as per the drawings, ensuring sharp, smudge-free text.
