A mix dispenser (14) comprises a hopper (24) with a top opening (26) for filling the hopper with a predetermined amount of mix and a bottom opening (28). The dispenser comprises a conveyor (30) which forms the bottom of said hopper (24) and is designed to extract the mix from the hopper (24) and convey it towards an end from where it falls into a mould. The dispenser is characterized in that said conveyor (30) comprises a supporting meshwork (32) made of a material resistant to the vapours of solvents such as styrene and operated by an electric motor (34). Furthermore a plant comprising such as dispenser is also described.

A feeding device for a press comprising: a first belt (2), movable in advancement along a conveying direction (X) and passing through a press (11, 12); depositing means (3), predisposed for spreading in a layer an amount (L) of loose material (L) on a movable plane. The device comprises a second belt (4), on which the depositing means (3) operate, located upstream of the first belt (2), which is movable along the conveying direction (X) and is substantially aligned and contiguous to the first belt (2). The first belt (2) and second belt (4) are movable independently of one another.

A method and an apparatus for casting concrete products by mold casting, where concrete mix is fed in a casting mold from a casting apparatus moved above the mold, and the concrete mix is vibrated with a vibrator assembly located at least partially in the area inside a nozzle of the casting apparatus, wherein the concrete mix is vibrated in the area inside the nozzle with the vibrator assembly performing only vertical vibrating motion.

A volumetric feeder may comprise a driving unit, a storage tank, a sealing unit, a switch unit and a feeding unit. An interior space of the storage tank is horizontally divided into a feeding space and a preparing space which have the same volume such that the feeding material, including viscous or cement-like materials, in the preparing space is configured to be transported into the feeding space with the same volume at a time to achieve volumetric feeding effect. Also, the feeding material in the feeding space is moved by a piston in a pushing manner thus preventing the feeding material from damage or heating during feeding process.

Means for dispensing a powdery coloring substance onto the surface of a mix comprising stone, stone-like, glass or ceramic material. The means comprise at least one dispensing device for containing and dispensing a powdery coloring substance and at least one spreading device. The spreading device comprises at least one moving perforated plate which receives a metered amount of said coloring substance from the dispensing device and distributes it over the surface of the mix.

Provided herein are a method and a system for producing slabs, tiles or sheets of artificial stone, with a wide vein effect, comprising inorganic particles of different sizes and hardened binders, and which simulate the appearance of natural stone.

The invention relates to a system for extrusion of filaments of construction material enriched with aggregates and/or steel fibers, referred to as loaded material, for a robot for additive manufacture of architectural structures comprising: a head (100) for printing filaments of construction material comprising an inlet opening (110) for material and an outlet nozzle (120) for material; a circuit (10) for supplying material to said print head (100) comprising a reservoir (20) for storing loaded material and a conduit (31) for supplying material, connecting said storage reservoir (20) and said print head (100); characterized in that said supply circuit (10) comprises at least one piston pump (40) mounted on said supply conduit (31) and in that said print head (100) comprises an endless screw (150) arranged between said inlet opening (110) and said outlet nozzle (120) and configured to be able to extrude the loaded material in a continuous manner via said outlet nozzle.

A dispensing device for dispensing a granular material, comprising a dispensing channel (20) provided with an inlet opening (21) and an outlet opening (22). The dispensing channel (20) comprises an intermediate portion (23), which connects the inlet (21) and outlet (22) openings and is provided with a longitudinal axis (Y); the intermediate portion (23) has a length (L) and a height (H), measured on a vertical plane containing the longitudinal axis (Y), wherein the height (H) is measured perpendicular to the length (L). The intermediate portion (23) is configured to enable the deposit and accumulation of a predetermined quantity of granular material coming from the inlet opening (21); Motor means are provided which can be activated on command to cause the granular material to flow in advancement from the intermediate portion (23) towards the outlet opening (22).