Abstract: Self-supporting intermediate walls (12) for cellular division of mould lower parts in a concrete casting machine of the kind typically used for making cast items in the form of concrete blocks for wall construction and elements, solid blocks or blocks with cavities or recesses in two or more rows. By the self-supporting design, the distance between rows of products may be reduced for better utilization of the production plate while at the same time maintaining the replaceability of wear parts. By the invention is indicated a self-supporting intermediate wall (12) consisting of two halves, an intermediate wall with lower pins (18) and an intermediate wall with upper pins (20) which, when the two halves are assembled with the pins engaging a partitioning plate (8), form a self-supporting intermediate wall (12). For moulds with core supports (28), intermediate wall parts (22 and 23) are used with a recess (25) in which the boss (29) on the core support iron (28) fits.

Abstract: The system is peculiar in that there is provided a number of temperature sensors inside a rotary dryer, the sensors indicating a representative temperature of the materials dried/heated in the zone in which the sensor in question is located. By combining the measured temperatures with indications/measurements of flow, temperature and humidity of the materials to be dried, and temperature and humidity of the flue gas, a regulating unit/system with a simple mathematical model of the drying process may control the oil or gas burner optimally, such that the energy consumption for the drying process is minimised, and the waste of material occurring by too much or too little heating, typically by start and shutdown, is almost eliminated. The system may be used both by concurrent and countercurrent rotary dryers, respectively, and by single as well as double chambered rotary dryers, respectively, for drying and heating mineral materials, primarily for asphalt production.

Abstract: Vibration equipment includes a vibration table with rotating shafts for producing vibrations and used in casting concrete blocks for e.g. paving and erection of walls. These vibration tables are normally made of cut-out, welded steel parts that after welding constitute the main part of the vibration table, making such vibration tables costly and resulting in relatively great waste of material. This method solves the above problems by providing vibration equipment in which individual parts for the vibration table are cast in one piece or are welded and are finally fastened to each other by bolts or by welding, thereby avoid several work operations and saving material in the form of steel. Simultaneously, the vibration table is designed such that force and stress flow in the vibration table is optimized.

Abstract: Mounting device for a flexible constructed retainer means for retention of a casting upper part in a concrete casting machine of the type which typically is used for the production of casting items in the form of concrete blocks for pavements and wall constructions. Typically, two or three fixer flutes (10) are applied for each casting upper part, the length of the fixer flutes are adapted the depth of the casting upper part. In the invention, a flexible mountable fixer flute (10) consisting of two identical halves (12) is described. When the height of these fixer flute-halves exceeds a certain height, spacers (14) are mounted by means of bolting. The design of the fixer flute (10) leaves a space where the forks of fork lift trucks can be passed through, thus using the fixer flutes to also lift the casting upper part.

Abstract: Turning arrangement (2) for concrete products, paving stones/flagstones for paving, curb stones for delimiting and blocks for erecting walls are arranged in a row with uniform orientation (4), the products (4) are advanced to a turning arrangement where the individual concrete product (6) is turned by the force of gravity.

Abstract: Use of more exotic laying patterns in connection with establishing paving stones of concrete blocks for e.g. paving on yards, are not widely used for cost reasons, as the automated laying machines laying the said paving stones in large surfaces at a time require the stones to be delivered in palletised formats which are handled by machine. The only way in which the said stereotype formats can be laid by machine is, if the paving stones are supplied manually, patterned layers on pallets. There is thus indicated a method for automatic sorting of paving stones (2) of different size from bulk condition to e.g. patterned laid palletisable layers in a standard out format, as the stones (2) after being guided into a row (3) are registered by size by a vision based system and guided into arraying lanes (34) from where these may selectively be dispensed in the preferred laying patterns in the said out formats (22).

Abstract: In connection with casting concrete blocks with cavities, e.g. foundation blocks, perforated blocks and elements with cavities, a moulding equipment including a bottom part (4) with casting cells with pendant core members (8) bolted on corresponding to the shape of the concrete block, and a top part (14) which have pressing plates (20) projecting downwards on support rods (18) and substantially corresponding to the shape of the casting cells, and so that the pressing plates (20) by stripping the items by vertical displacement of the bottom part (4) are passed down through the casting cells (6). By the invention is indicated a bottom part (4) that include means in the form of core members (8) bolted on, forming the defined cavities in the finished block/element.

Abstract: Use of more exotic laying patterns in connection with establishing paving stones of concrete blocks for e.g. paving on yards, are not widely used for cost reasons, as the automated laying machines laying the said paving stones in large surfaces at a time require the stones to be delivered in palletised formats which are handled by machine. The only way in which the said stereotype formats can be laid by machine is, if the paving stones are supplied manually, patterned layers on pallets. There is thus indicated a method for automatic sorting of paving stones (2) of different size from bulk condition to e.g. patterned laid palletisable layers in a standard out format, as the stones (2) after being guided into a row (3) are registered by size by a vision based system and guided into arraying lanes (34) from where these may selectively be dispensed in the preferred laying patterns in the said out formats (22).

Abstract: In connection with casting concrete blocks with cavities, e.g. foundation blocks, perforated blocks and elements with cavities, a moulding equipment including a bottom part (4) with casting cells with pendant core members (8) bolted on corresponding to the shape of the concrete block, and a top part (14) which have pressing plates (20) projecting downwards on support rods (18) and substantially corresponding to the shape of the casting cells, and so that the pressing plates (20) by stripping the items by vertical displacement of the bottom part (4) are passed down through the casting cells (6). By the invention is indicated a bottom part (4) that include means in the form of core members (8) bolted on, forming the defined cavities in the finished block/element.

Abstract: In connection with the moulding of tiles and bricks, for example for paving etc., use is made of moulding equipment comprising an under-part (16) with moulding cells (18) corresponding to the shape of the tile or brick, and an upper-part (2) with tubes (6) which support downwards-extending pressure plates (8) corresponding substantially to the shape of the moulding cell, and such that the pressure plates (8), in the forming of the items by vertical displacement of the under-part (16), are fed down through the moulding cells (18). With the invention, there is disclosed an upper-part (2) comprising means whereby the upper-part (2), alternatively the under-part (16), comprises means (20, 24) which ensure that when the under-part (16) is raised to a certain minimum height, which is greater than the thickness of the mould items, the pressure plates (8) maintain their position outside, or their guiding engagement with, the sides (14) of the cell (18) corresponding therewith.

Abstract: A main frames having bottom and top frame parts for concrete molding machines of the kind which are used in making slabs or blocks for covering surfaces and erecting walls are usually made by welding together cut standard steel sections of the types HEM, RHS, UNP, etc. The requirements to materials and welds at the making of bottom frames of this kind are high due to the fact that welded structures subjected to vibration only has 10-15% of the basic material strength in the welding zones. Thus, the main frame has a bottom frame part (40) formed of two flame cut bottom plates (42, 44) arranged in parallel as an upper plate (42) and a lower plate (44) and forming the basic shape of the bottom, the bottom plates (42, 44) being interconnected by at least two longitudinal plates (46, 48) and a number of transverse plates (50, 52, 54). In this way, substantial savings are achieved as the main frame can be made with fewer or no welds in the critical areas, or with welds of a lower class.

Abstract: A system for die casting of concrete goods such as block stones comprises a cellular casting mould having a plurality of cells and a device for supplying concrete for filling the cells. A dolly including a common base member with protruding pistion portions having load plates of a shape corresponding to that of the cells, is used for compressing the concrete in the cells. Each of the piston portions includes a resilient compressible material arranged between the load plates and the common base member for obtaining uniform density and strength in the goods in the respective cells.