In a device for producing concrete slabs, a mold lower part is inserted into a frame secured via retaining braces to receiving areas of guiding columns oriented along an insertion direction and having, above the mold lower part, a structural loading device movable along the guiding columns and having, on the side facing the mold lower part, a mold upper part with one or more pressure plates inserted or insertable into one or more recesses of the mold lower part, the structural loading device being connected to the pressure plates via pressure rams. An upper guide element arranged between the structural loading device and the pressure rams interacts with a lower guide element arranged on the retaining brace such that, during the production of concrete slabs, the structural loading device is constantly guided relative to the mold lower part on a plane perpendicular to the insertion direction.

Device for pressing a non-hardened concrete composition into a desired form includes an upper plate with first cavities running through the upper plate, a moulding plate with one or more second cavities whereby the upper plate is located directly above the moulding plate, a bottom plate located under the moulding plate whereby the bottom plate closes the one or more second cavities on the bottom, whereby the upper plate and the moulding plate can move horizontally in relation to each other between a first position in which the one or more first cavities are directly and exactly above the one or more second cavities and a second position in which the one or more first cavities are not above the one or more second cavities, wherein the thickness of the upper plate and not the thickness of the moulding plate is decisive for the thickness of the final article.

The proposed solution solves a problem of designing a machine for producing molded composite parts that are homogeneously structured and the problem of finding a method for producing composite for implants. The essence of the design of the machine consists in that it has a portioning assembly, whereby above a mold form unit (14) there is a guiding unit (11) located opposite a dosing unit (6) and above the aforementioned guiding unit (11) there is a pressing assembly (20) slidingly mounted on a vertical frame (19) and which is equipped with at least one piston rod (25) with a rammer (27) at its end. A preliminary molding is being performed by thoroughly filling a preform trough and then the matter is being pushed out of the preform trough in portions and then each portion is rammed separately until consistency containing less than 15% air is achieved.

Device (1) for pressing a non-hardened concrete composition (12) into a desired form, whereby the device comprises an upper plate (4) with one or more first cavities (7) that run through the upper plate (4), a moulding plate (3) with one or more second cavities (9) whereby the upper plate (4) is located directly above the moulding plate (3), a bottom plate (2) located under the moulding plate (3) whereby the bottom plate closes the one or more second cavities (9) on the bottom, whereby the upper plate (4) and the moulding plate (3) can move horizontally in relation to each other between a first position in which the one or more first cavities (7) are directly and exactly above the one or more second cavities (9) and a second position in which the one or more first cavities (7) are not above the one or more second cavities (9), wherein the thickness of the upper plate (4) and not the thickness of the moulding plate (3) is decisive for the thickness of the final article (12,13

The proposed solution solves a problem of designing a machine for producing molded composite parts that are homogeneously structured and the problem of finding a method for producing composite for implants. The essence of the design of the machine consists in that it has a portioning assembly, whereby above a mold form unit (14) there is a guiding unit (11) located opposite a dosing unit (6) and above the aforementioned guiding unit (11) there is a pressing assembly (20) slidingly mounted on a vertical frame (19) and which is equipped with at least one piston rod (25) with a rammer (27) at its end.

A preliminary molding is being performed by thoroughly filling a preform trough and then the matter is being pushed out of the preform trough in portions and then each portion is rammed separately until consistency containing less than 15% air is achieved.

Provided is a device for improving perovskite film formation uniformity, including a grinder and a sheeter, wherein the grinder grinds a perovskite precursor into a powder, the sheeter presses the ground precursor powder into a precursor sheet, the sheeter includes a mold for pressing the precursor powder and a heating device, and the heating device heats a lower mold. A method of using the above device for improving perovskite film formation uniformity, and a method of preparing a perovskite solar cell are also provided. The precursor sheet prepared herein not only solves the problems of uneven particle size and uneven spreading at the bottom of the evaporation source or incomplete coverage, but also prevents splashing during vacuuming and aeration, and meanwhile, since the precursor powder is compacted, it is more conducive to the uniform conduction of heat during the heating and evaporation process, thereby improving the heat energy use efficiency.

Manufacturing process of a stone providing for the following steps: positioning a die and a base platform under punches of a press, filling cavities of the die with a sand layer, placing a tube on the sand, actuating the actuation means to actuate the punches from the idle position to the operating position so that each punch presses the tube in the sand and presses the sand in the cavities of the die, actuating the actuation means to raise the punches, placing the stones in a drying station, extracting the solidified sand inside the tube from each stone, and placing a lighting device in the tube.

In a device for producing concrete slabs, a mold lower part is inserted into a frame secured via retaining braces to receiving areas of guiding columns oriented along an insertion direction and having, above the mold lower part, a structural loading device movable along the guiding columns and having, on the side facing the mold lower part, a mold upper part with one or more pressure plates inserted or insertable into one or more recesses of the mold lower part, the structural loading device being connected to the pressure plates via pressure rams. An upper guide element arranged between the structural loading device and the pressure rams interacts with a lower guide element arranged on the retaining brace such that, during the production of concrete slabs, the structural loading device is constantly guided relative to the mold lower part on a plane perpendicular to the insertion direction.

Manufacturing process of a stone providing for the following steps: positioning a die and a base platform under punches of a press, filling cavities of the die with a sand layer, placing a tube on the sand, actuating the actuation means to actuate the punches from the idle position to the operating position so that each punch presses the tube in the sand and presses the sand in the cavities of the die, actuating the actuation means to raise the punches, placing the stones in a drying station, extracting the solidified sand inside the tube from each stone, and placing a lighting device in the tube.

An apparatus for the production of concrete molded parts in a molding machine includes an upper mold part having at least one pressure punch for transfer of a force to at least one pressure plate, wherein the pressure plate can be introduced into an opening of a mold insert in a lower mold part in the vertical direction, wherein the lower mold part is surrounded by a frame that has a guide connected with the upper mold part and configured so that, the lower mold part can be tilted from the vertical direction, relative to the upper mold part, during engagement of the pressure plates into the openings of the mold insert.