An assembly machine for manufacturing of reinforcement structures, such as rebar cages or meshes, comprising: - a production area extending in a longitudinal direction and in a transverse direction, - a first loading unit arranged relative to the production area, the first loading unit being configured to load a number of rebar elements into the assembly machine, - at least one moveable robot unit (14, 15) arranged relative to the production area, the at least one moveable robot unit (14, 15) comprising at least one robotic arm configured to be fitted with at least one tool for securing longitudinal rebar elements to transverse rebar elements, wherein the at least one moveable robot unit is configured to move along the production area in the longitudinal direction, characterised in that the assembly machine further comprises: - a plurality of support arms distributed along the production area in the longitudinal direction and configured to provide support for longitudinal rebar elements, each of the support arms extending in the transverse direction, - at least one support element configured to hold a number of transverse rebar elements in at least one fixed position in the longitudinal direction, the at least one support element being distributed along the production area in the longitudinal direction relative to the support arms, wherein the first loading unit is configured to load a number of longitudinal rebar elements into the production area in the longitudinal direction. - a production area extending in a longitudinal direction and in a transverse direction, - a first loading unit arranged relative to the production area, the first loading unit being configured to load a number of rebar elements into the assembly machine, - at least one moveable robot unit (14, 15) arranged relative to the production area, the at least one moveable robot unit (14, 15) comprising at least one robotic arm configured to be fitted with at least one tool for securing longitudinal rebar elements to transverse rebar elements, wherein the at least one moveable robot unit is configured to move along the production area in the longitudinal direction, characterised in that the assembly machine further comprises: - a plurality of support arms distributed along the production area in the longitudinal direction and configured to provide support for longitudinal rebar elements, each of the support arms extending in the transverse direction, - at least one support element configured to hold a number of transverse rebar elements in at least one fixed position in the longitudinal direction, the at least one support element being distributed along the production area in the longitudinal direction relative to the support arms, - a plurality of support arms distributed along the production area in the longitudinal direction and configured to provide support for longitudinal rebar elements, each of the support arms extending in the transverse direction, - at least one support element configured to hold a number of transverse rebar elements in at least one fixed position in the longitudinal direction, the at least one support element being distributed along the production area in the longitudinal direction relative to the support arms,