Formwork mechanism for casting and moulding concrete, comprising a coffer with a sheet and four plates arranged around the sheet's perimeter

A formwork mechanism comprising:

• a coffer comprises a sheet and a plate arranged around the perimeter of the sheet, the plate having a plurality of holes arranged on a front face thereof;
• and
• a structural element connected to the plate with fixing means, the structural element having lateral perforations aligned with individual ones of the plurality of holes of the coffer plate, the fixing means being configured to pass through individual, corresponding ones of the plurality of the holes and the lateral perforations, the coffer further comprising:
• a first plurality of punctured tabs disposed on a periphery of the sheet,
• a second plurality of punctured tabs disposed on a periphery of the plate, each one of the second plurality of punctured tabs connected to a corresponding one of the first plurality of punctured tabs by the fixing means, and
• four corner profiles, each one of the four corner profiles having two individual ones of a third plurality of perforated tabs, each one of the third plurality of perforated tabs being connected to a corresponding one of the second plurality of punctured tabs,
• the structural element being configured to move vertically to align with the holes, the holes being disposed at different heights along the plate.