Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/0061—Moulds, cores or mandrels specially adapted for mechanically working moulding surfaces during moulding or demoulding, e.g. smoothing by means of mould walls driven during moulding or of parts acting during demoulding

Definitions

• the invention relates to a device for producing moldings from concrete with a roughened surface formed by removing concrete on an outside of the raw molding when it is demolded. Furthermore, the invention relates to a concrete molding with at least one roughened side surface, in particular a concrete block.
• the invention has for its object to propose measures for the production of moldings from concrete with at least one outside structured in a special way.
• the device according to the invention is characterized by the following features:
• a scraper is movable (during the demolding of the molded article) on the outside of the molded article in the upward direction, with concrete being scraped off,
• the stripped concrete can (continuously) be removed on the side of the stripper facing away from the formation.
• the device according to the invention is accordingly designed such that the scraper, which is preferably designed as a web with a sharpened scraper edge, is moved along the rough shaping in the area of the roughened surface to be produced, taking along a (thin) layer of concrete that is immediately, continuously during the scraper Operation on the side facing away from the concrete molding.
• the stripped concrete falls down on the free side of the stripper, onto a free part of a concrete mold, usually onto a base board.
• the scraper is formed in the lower region of a mold wall of the concrete mold with a scraper edge protruding inwards, i.e. for shaping, an opening being formed above the scraper in the mold wall which allows the lateral exit of the allows stripped concrete to be removed from the mold during the stripping process.
• the concrete mold or mold walls of the same have wipers on several sides, optionally on all sides, in such a way that several or all side surfaces of the concrete mold with a structure roughened by stripping are formed during demolding.
• Several individual forms designed in this way can be formed into a concrete form with a plurality of mold nests and section strips assigned to each mold nest.
• the invention relates to a concrete molding, in particular concrete block with a roughened side surface in the above sense.
• several or all of the upright side surfaces of the concrete block can also be provided with a structure created by stripping off concrete, preferably two mutually opposite, outwardly facing visible surfaces being curved in an arc.
• FIG. 2 is a detail of the shape of FIG. 1 in an interior view of the same
• FIG. 3 shows the shape according to FIG. 1 in plan view
• FIG. 6 shows the concrete mold according to FIG. 5 during demolding
• FIG. 7 shows a third embodiment of the concrete form in a position analogous to FIG. 6,
• FIG. 11 is a perspective view of a concrete block
• Fig. 14 is a concrete mold for the production of concrete blocks in a schematic floor plan.
• the concrete blocks 10 are manufactured in a concrete mold 13, which in its simplest form consists of a single chamber or a single mold cavity 14. This cavity or mold cavity 14 is laterally surrounded by mold walls 15, 16, 17, 18. These limit the (raw) shaping or concrete block 10 (FIG. 4, FIG. 5).
• the concrete mold 13, which is open at the top and bottom, rests on a separate base, in particular on a base board 19. This in turn usually lies on a vibrating table 20 for compacting the concrete.
• the raw concrete is placed in the concrete mold or in the mold cavity from above 14 filled while the concrete mold 13 rests on the base board 19.
• a stamp 21 serves as the upper end of the (filled) concrete mold 13 or the mold cavity 14, the stamp plate 22 of which rests on the top of the concrete or on the concrete block 10.
• the concrete block 10 is removed from the mold, namely by lifting the concrete mold 13, that is to say the mold walls 15 ... 18.
• the molding or concrete block 10 is opened fixed to the underlay board 19, specifically by the stamp 21 held in its position.
• the concrete mold 13 is accordingly pulled off the concrete block 10 in the upward direction.
• the punch 21 is also lifted off the concrete molding (FIG. 8), which now rests freely on the base board 19 for removal.
• a scraper 23 is provided, which is moved along the outside 12 to be designed while stripping off the concrete layer 11.
• the scraper 23 is connected to the concrete mold 13 and is designed in a special way, namely as an exposed, transverse web with (approximately) ) trapezoidal cross-section.
• a partial area of the scraper 23 extends in the area of a (upright) mold wall 15 or is part of this mold wall 15.
• a tapering, sharp-edged scraping edge 24 projects inside the mold wall 15 into the interior of the mold cavity 14. This projection or The protrusion of the stripper 23 scrapes off the concrete layer 11 during the upward movement of the concrete mold 13 during the demolding process (FIG. 4, FIG. 6).
• the special structure of the outside 12 results from the fact that the stripped concrete, i.e. stripping concrete 25, is continuously removed immediately after stripping and during the entire stripping process, namely on the side facing away from the concrete block 10 or the outside 12 of the same.
• the scraper 23, which is relatively narrow in the transverse direction, is exposed in such a way that the scraper concrete 25 is pushed laterally over the scraper 23 and then removed, namely by falling onto the underlay board 19. This is favored by the fact that the scraper 23 on the outside is essentially flush with the associated mold wall 15 and practically forms part of the same.
• the stripper 23 forming the lower boundary of the mold wall 15 is connected to the mold wall 15 or its upper part via upright connections, namely support webs 26. Above the stripper 23, the mold wall 15 forms an opening 27 which extends over the full dimension or width of the mold wall 15 in accordance with the structured outer side 12 to be created and is only interrupted by a plurality of support webs 26 arranged at a distance from one another.
• the mold wall 15 is provided with a cover wall 28. This extends at a distance from the mold wall 15 in height from the scraper 23 to above the opening 27.
• the cover wall 28 delimits a chamber 29, which is open at least downwards, or a narrow channel for the targeted removal of the scraper concrete 25 next to the region of the mold wall 15 1, the chamber 29 is open at the top and bottom so that a cleaning member can be moved through the chamber 29 if necessary.
• the stamp 21 or the stamp plate 22 is dimensioned and positioned within the mold cavity 14 such that there is no cover by the stamp plate 22 on the side, namely adjacent to the mold wall. This is the area of the concrete layer 11 that is wholly or partially stripped. 8 shows that the scraper 23 can be moved past the stamp plate 22.
• the chamber 29 is closed at the top, specifically by an obliquely directed upper wall 30. This prevents stripping concrete 25 from escaping upwards in the extreme case.
• 5 shows the initial situation of a concrete form 13 after the concrete has been poured in and before the concrete form 13 has been lifted. Concrete also enters the area of the chamber 29, but becomes immediately downward when the concrete form 13 moves upwards via the free exit of the chamber 29 derived.
• FIGS. 7 and 8 show a concrete form 13 in vertical section, which on two opposite sides, namely on the outside 12 and on an opposite outside 31, creates a surface of the concrete block 10 that is structured by stripping. Both opposite sides of the concrete form 13 are designed to match, namely with a scraper 23 and a chamber 29, respectively 5 and FIG. 6.
• FIG. 8 shows the upper area of a finished, raw concrete block 10 after the die 21 has been removed from the mold and removed. The concrete block 10 can now be removed for hardening.
• the concrete block 10 provided with one or more structured outer sides can be designed in different ways, and also as a hollow body.
• FIGS. 9, 10 and 11 show a concrete block 10 as an exemplary embodiment, which is square in plan, but with curved visible surfaces 32, 33. By appropriate shaping, these visible surfaces 32, 33 are balmy or barrel-like towards the outside arched. End faces 34, 35 lying opposite one another are flat, converging towards the visible surface 32. Retaining walls, in particular, can be produced from a concrete block designed in this way.
• the side surfaces 32 ... 35 can be structured differently.
• the (larger) visible surface 33 is provided with a structure created by stripping concrete.
• An embodiment is advantageous in which both facing surfaces 32, 33 are formed in this way.
• all side surfaces are formed with this structure.
• This shape of the concrete block 10 is shown in perspective in FIG. 11, a groove 36 having a trapezoidal cross section being additionally formed on an upper side and on a lower side for inserting anchoring members for adjacent shaped blocks 10.
• Fig. 12 shows a substantially cylindrical hollow body made of concrete, which is used in particular as a planting ring 37.
• the cylindrical outer surface 38 is preferably structured all around by stripping concrete.
• a cylindrical, solid, elongated formation 39 is provided with a structure along the entire cylindrical outer surface 38 by stripping concrete.
• This formation 39 can be used, for example, as a palisade element.
• Concrete blocks, in particular in the embodiment according to FIGS. 9 to 11, can be efficiently manufactured in a concrete mold according to FIG. 14 with a plurality of mold nests 14. These are arranged in (three) transverse rows, each with a plurality of mold nests 14. With an approximately trapezoidal shape of the concrete block 10 in the plan, that is to say with converging end faces 34, 35, the mold nests are arranged with alternating alignment within a row, so that an optimal one Use of space is given.
• the individual mold cavities 14 are designed such that concrete is stripped off on two opposite sides, namely on the two visible surfaces 32, 33.
• a stamp 21 (not shown in FIG. 14) is assigned to each mold cavity 14, as is generally the case.
• the entire concrete form according to FIG. 14 is raised as a unit for stripping concrete in such a way that all concrete blocks 10 in the mold nests 14 are processed simultaneously by stripping concrete.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Mechanical Engineering (AREA)
• Moulds, Cores, Or Mandrels (AREA)
• Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
• Artificial Fish Reefs (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=32038453

Family Applications (1)

Country Status (6)

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Family Cites Families (5)

• 2002
  • 2002-10-10 DE DE10247259A patent/DE10247259A1/de not_active Withdrawn
• 2003
  • 2003-10-09 ES ES03770960T patent/ES2289335T3/es not_active Expired - Lifetime
  • 2003-10-09 AT AT03770960T patent/ATE365615T1/de not_active IP Right Cessation
  • 2003-10-09 AU AU2003280352A patent/AU2003280352A1/en not_active Abandoned
  • 2003-10-09 EP EP03770960A patent/EP1551606B1/fr not_active Expired - Lifetime
  • 2003-10-09 DE DE50307580T patent/DE50307580D1/de not_active Expired - Fee Related
  • 2003-10-09 WO PCT/EP2003/011163 patent/WO2004035280A1/fr not_active Ceased

Non-Patent Citations (1)

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