The Entire Process of Factory-Prefabricated Houses
The entire process of factory-prefabricated houses varies depending on the type of house, with common types including wooden houses, container houses, and prefabricated modular wooden houses. Below are the specific prefabrication processes:
Wooden Houses: Prefabrication in factories is dominated by CNC and robotic arms, achieving high precision, low cost, and high efficiency production. First, employees draw structural plans based on design requirements. During the material preparation stage, pine wood is precisely sawed along the dividing lines. The equipment uses gravity sensing to drag the wood to the parking area and prints labels of the same model using lasers, which are then affixed to the surface for classification and stacking. After the wooden boards are stacked, roller robotic arms lift them up, and nail guns complete single-sided nailing within 2 seconds to form window frames while simultaneously picking up the vertical surfaces and transporting them to the next platform. Workers insert solid wood into the equipment to make square frames, which serve as the main walls of the house. Throughout the process, the CNC system coordinates the actions of the robotic arms, reducing manual intervention and ensuring that the dimensional errors of the components are controlled within millimeters.
Container Houses: The prefabrication process is highly standardized and adopts an assembly-line operation mode, allowing multiple processes to be carried out simultaneously. Dedicated production lines are set up in the factory, with each step from steel cutting, welding and shaping to anti-corrosion treatment completed by automated equipment. After the container frames are welded, they undergo water tightness tests and structural strength inspections to ensure compliance with international transportation standards. The wall and roof panels usually use prefabricated sandwich panels, which are quickly installed by robotic arms. The embedding of internal pipelines and the construction of the decorative layer are carried out simultaneously, shortening the overall construction period.
Prefabricated Modular Wooden Houses: This combines on-site assembly with factory prefabrication, emphasizing modular construction. Modules such as walls, floors, and roofs are prefabricated in the factory: Workers unload the heavy wood and build a chassis frame on a concrete foundation, laying floor joists and securing the joints with metal connectors. Large wooden panels cover the platform to form the ground surface. Wall modules are fixed to the floor with nail guns, transforming the house from a flat layout to a three-dimensional structure. After the exterior wall frames are enclosed, the interior simultaneously cuts and assembles the partition wall skeletons and lays the second-floor floor beams. Finally, triangular trusses are transported to the site, and ground and roof workers cooperate to hoist them onto the top beams of the walls to complete the roof sealing. This process reduces on-site wet work through modular design and improves construction efficiency.
