FIELD: civil engineering. SUBSTANCE: device for making architectural articles with blow holes has bed 1 and mechanism for the vertical displacement of hollow-core forming mandrels 4 in which drive shafts with hard-mounted unbalanced mass and with additional unbalanced mass rotating relative to the former by 180 till the prop are disposed. The housings of the hollow-core forming mandrels are made with the cross-section in the shape of regular polygons and are mounted forming equal gaps between their parallel adjoining surfaces. The concrete mix is loaded into mold 12, and hollow-core forming mandrels 4 are immersed into the mold when the vibrators are switches on. In the process of the concrete mix thickening, blow holes are formed in the article. After the process of molding is over, the shaft is reversed again. As a result the oscillation amplitude of the housings of the vibrational exciters is abruptly decreased and they are easily withdrawn from the article by mechanism 2 of vertical displacement. EFFECT: enhanced quality of articles, reduced power capacity of the process of the mix thickening. 1 cl, 5 dwg
