A support and guide structure for a closed-loop articulated-link conveyor, the support and guide structure comprising: - at least two separate guides (14, 16, 18) arranged at a predefined distance from each other, said guides (14, 16, 18) being oriented along respective development axes (X, Y, Z) and defining respective sliding surfaces for a forward path of the articulated-link conveyor; - a support component comprising: - at least one first surface and at least one second surface (24, 26) opposed to each other, wherein said guides (14, 16, 18) are fastened on said first surface to define at least one sliding channel (28, 30) delimited by said guides (14, 16, 18) and by at least one portion of said first surface, said at least one sliding channel (28, 30) housing at least one portion of the articulated links of the conveyor in the respective forward path, - at least two walls (32, 34, 36) which extend from said second surface (24, 26) and comprise respective grooves (38, 40) oriented along respective development axes (X', Y', Z') that are substantially parallel to the development axes (X, Y, Z) of said guides (14, 16, 18), said grooves (38, 40) providing the sliding support of the articulated-link conveyor in its return path, and - a plurality of cavities, each designed for housing one or more magnets, wherein said cavities are obtained in said support component, are open at said second surface (24, 26) and are provided with respective closing plates, the support and guide structure being characterized in that said at least two guides (14, 16, 18) are provided with fastening means (48, 50) which are reversible and removable with respect to said first surface, wherein said fastening means consist of a plurality of rigid and non-deformable connection elements (48, 50) designed for being fitted by shape coupling, through friction and without screwing, on one side, in corresponding hollow seats obtained on said first surface, and, on the opposite side, in corresponding hollow seats obtained on each guide (14, 16, 18), and wherein said hollow seats (52, 54) do not have any recesses or undercuts. - at least two separate guides (14, 16, 18) arranged at a predefined distance from each other, said guides (14, 16, 18) being oriented along respective development axes (X, Y, Z) and defining respective sliding surfaces for a forward path of the articulated-link conveyor; - a support component comprising: - at least one first surface and at least one second surface (24, 26) opposed to each other, wherein said guides (14, 16, 18) are fastened on said first surface to define at least one sliding channel (28, 30) delimited by said guides (14, 16, 18) and by at least one portion of said first surface, said at least one sliding channel (28, 30) housing at least one portion of the articulated links of the conveyor in the respective forward path, - at least two walls (32, 34, 36) which extend from said second surface (24, 26) and comprise respective grooves (38, 40) oriented along respective development axes (X', Y', Z') that are substantially parallel to the development axes (X, Y, Z) of said guides (14, 16, 18), said grooves (38, 40) providing the sliding support of the articulated-link conveyor in its return path, and - a plurality of cavities, each designed for housing one or more magnets, wherein said cavities are obtained in said support component, are open at said second surface (24, 26) and are provided with respective closing plates, - at least one first surface and at least one second surface (24, 26) opposed to each other, wherein said guides (14, 16, 18) are fastened on said first surface to define at least one sliding channel (28, 30) delimited by said guides (14, 16, 18) and by at least one portion of said first surface, said at least one sliding channel (28, 30) housing at least one portion of the articulated links of the conveyor in the respective forward path, - at least two walls (32, 34, 36) which extend from said second surface (24, 26) and comprise respective grooves (38, 40) oriented along respective development axes (X', Y', Z') that are substantially parallel to the development axes (X, Y, Z) of said guides (14, 16, 18), said grooves (38, 40) providing the sliding support of the articulated-link conveyor in its return path, and - a plurality of cavities, each designed for housing one or more magnets, wherein said cavities are obtained in said support component, are open at said second surface (24, 26) and are provided with respective closing plates,