The basic principle of the refrigerator casing production line can be summarized as follows: a single steel plate is treated as "paper," and automated equipment is used to perform edge trimming, punching, and bending operations; finally, the plate is "folded" into a three-dimensional housing shell. The entire process can be completed for a single unit in as little as 12 seconds.
Core Process Flow
- Raw Material Loading: The rolled steel plates are first cut into sheets of the required dimensions for the top plate, side plates, bottom plate, and other components.
- Punching and edge trimming: Computer-controlled equipment punches assembly holes, cooling holes, and positioning holes into steel plates, while simultaneously trimming the edges to ensure precise hole positioning.
- Bending and forming: This is the most critical step; the production line functions like a massive "origami machine," using a bending machine to shape the steel plate into the required dimensions and edges, thereby creating a U-shaped or fully encapsulating three-dimensional shell.
- Assembly and fixation: Place the folded steel plates into the assembly box and securely fasten all plates together to complete the outer shell assembly.
Equipment and Automation
- The entire production line typically consists of an automatic feeding machine, a punching machine, a bending machine, a cutting machine, and the corresponding pneumatic, hydraulic, and electrical control systems.
- Advanced manufacturing facilities utilize programmable logic controllers (PLCs) from manufacturers such as Siemens to implement end-to-end automated control systems, while robotic arms are employed to automatically pick up formed products.
- Each component can be equipped with an intelligent RFID chip, enabling the scheduling system to track its location and production stage in real time, thereby supporting flexible manufacturing of multiple product models.