Full process of freezer production line

The freezer production line is an automated system for manufacturing low-temperature storage equipment, following six core steps: box core processing, refrigeration system assembly, electrical module integration, complete machine performance testing, finished product packaging, and storage. Equipped with precision tools and standardized processes, it transforms raw materials into freezers compatible with household small, commercial large-capacity, and dual-temperature models, supporting flexible production across diverse specifications.

As the foundation for insulation and structural stability, this line prioritizes “sealed insulation + rugged durability” to withstand low-temperature environments. CNC machines cut and punch cold-rolled steel plates, precisely reserving positions for doors and refrigeration systems (error ≤0.1mm). Box frames and liners are then bent via CNC, with key connections welded and reinforced to ensure structural stability. Eco-friendly polyurethane is injected into the box interlayer, cured at a constant temperature to form uniform insulation. Finally, boxes undergo derusting, receive a wear-resistant coating via electrostatic spraying, and are scanned for model traceability.

Adopting a “modular assembly + precise debugging” model, this line ensures cooling efficiency and stability. Conveyors transport boxes to stations, where the first station installs core components: compressors, condensers, and evaporators—all pre-tested for performance. Refrigeration pipelines are connected, with joints brazed to prevent leakage, and AGVs deliver refrigerant for precise filling per specifications. System debugging follows, testing refrigeration speed and temperature control accuracy, while component information is recorded via code scanning to avoid mismatches.

Focused on “circuit integration + functional debugging”, this line guarantees intelligent control and operational safety. Controllers and sensors are automatically welded to circuit boards, with welds inspected post-testing. Electrical modules are fixed in electronic control cabins, with compressor power lines and thermostat lines connected using insulated terminals (ensuring high/low-voltage isolation). Function debugging includes testing thermostat adjustment, indicator lights, door switch linkage, and overload/leakage protection. High-end models receive control panels and display screens, with final checks confirming stable electrical system operation.

Multi-station tests verify freezer insulation, refrigeration, and safety against industry standards. Appearance and sealing checks identify scratches and gaps, while door sealing is tested to prevent cold air leakage. Electrical safety tests measure insulation resistance and verify leakage protection functionality. Core performance testing simulates real-world use, evaluating cooling speed, constant temperature maintenance, energy consumption, and noise levels. Unqualified freezers are diverted for maintenance; qualified units proceed to cleaning.

This line focuses on protecting the freezer’s large-volume, precision structures during transport and warehousing. Qualified freezers are wrapped in dustproof, moisture-proof film, with pads added between doors and boxes to prevent collisions. They are then packed into customized cartons, with parts secured via foam molds. Labels indicate model, capacity, type, and handling warnings. AGVs transport packages to smart storage areas, sorted by “type + capacity”, with the system updating inventory in real time to minimize manual handling loss.