Office Chair Processing Methods
The processing methods for office chairs mainly include three key steps: base and frame production, leather and foam treatment, and seat assembly.
Base and Frame Production: The base and frame serve as the supporting structure of an office chair, requiring sufficient strength and stability. Typically, welding processes are used to fabricate the base. First, a sturdy base frame is welded, and steel springs are installed from the front, with support brackets placed between the springs to enhance elasticity. After completing the seat frame, the backrest frame of the chair is welded. In some production processes, hydraulic-powered machines are used to bend steel tubes into shape, creating the frame for the bottom cushion. The ends are connected, and steel bars are welded in the middle. S-shaped steel springs are hung from the front to the back of the seat frame, with horizontal bars placed and clamped onto the springs to increase stability and support.
Leather and Foam Treatment: The treatment of leather and foam directly affects the comfort and appearance of an office chair. Workers smooth out the leather on a cutting table and cut out pieces according to templates, avoiding natural flaws in the leather during cutting. After cutting, foam blocks are cut according to the needs of different parts; foam densities vary, with soft foam used for cushioning and hard foam for shaping the chair. Finally, the leather is divided according to size and sewn together with the foam. In some production processes, workers first smooth the leather to lay it evenly on the cutting table, cut patterns according to cardboard templates, and then cut foam pads for the back of the chair after cutting the leather.
Seat Assembly: Seat assembly is the final step in processing an office chair, requiring precise combination of various components. The previously welded frame is added with particleboard and foam, and the seat is wrapped in leather. After assembly, plastic cover plates are screwed on underneath, and the base, support rods, and support tray are attached. A hydraulic rod for the lifting valve seat is installed, which controls the chair's height adjustment and allows for 360-degree rotation. Finally, an aluminum base and casters are attached, along with headrest and armrest components. In some production processes, the plastic skeletons of the backrest and seat cushion are manufactured using injection molding processes, where engineering plastic pellets are processed into shape to improve production efficiency and component precision.
