The mold employs a detachable welded steel structure, composed of modular components such as a base plate, four side plates, a central core mold, and four independent corner molds. This design not only facilitates the demolding of complex hollow components but also improves the mold's flexibility and maintainability. After mold closing, the cavity precisely corresponds to the shape of the four-legged hollow block, including a large central cubic cavity and four outwardly extending frustum-shaped support cavities. The modules are aligned using high-precision positioning pins or hinges and secured with high-strength bolts. Embedded rubber sealing strips are installed on the parting surfaces to ensure no cement slurry leakage during pouring.
Bottom Formwork: Supports the entire mold and is often welded to the supporting frame.
Side Formwork: Four-sided panels forming the block outline; can be designed to be detachable.
Four-Legged Structure: Protruding support legs extending from the bottom, typically 50–100mm high, ensuring the finished product's stability in mid-air.
Hollow inner cavity: Formed by a core mold or pre-reserved space, occupying approximately 40%–60% of the external volume.
Demolding system: Some high-end molds have built-in auxiliary demolding mechanisms to improve efficiency.
Reinforcing ribs: Added at the four legs or corners to prevent bulging and deformation during pouring.