EP0286949A1 - Vorrichtung zum Herstellen eines Kunststeines - Google Patents

Vorrichtung zum Herstellen eines Kunststeines Download PDF

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Publication number
EP0286949A1
EP0286949A1 EP88105413A EP88105413A EP0286949A1 EP 0286949 A1 EP0286949 A1 EP 0286949A1 EP 88105413 A EP88105413 A EP 88105413A EP 88105413 A EP88105413 A EP 88105413A EP 0286949 A1 EP0286949 A1 EP 0286949A1
Authority
EP
European Patent Office
Prior art keywords
die
molding box
artificial stone
side walls
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88105413A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gmbh Hotzel-Beton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOETZEL BETON GmbH
Original Assignee
HOETZEL BETON GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HOETZEL BETON GmbH filed Critical HOETZEL BETON GmbH
Publication of EP0286949A1 publication Critical patent/EP0286949A1/de
Withdrawn legal-status Critical Current

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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
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber
    • 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
    • B28B7/06—Moulds with flexible parts
    • 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
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
    • B28B7/12—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article by fluid pressure, e.g. acting through flexible wall parts or linings of the moulds
    • 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
    • B28B7/20—Moulds for making shaped articles with undercut recesses, e.g. dovetails

Definitions

  • the invention relates to a device for producing an artificial stone molded from a natural stone or artificial stone, in particular from concrete, with a mold frame and one in or into the mold frame. applied elastic matrix, as well as a corresponding matrix.
  • the present invention relates to the production of such artificial stones, which are molded from a natural stone such as travertine, which has a non-uniform surface structure with partially significantly undercut depressions. These depressions in the natural stone lead to correspondingly shaped elevations on the top of the die.
  • the known matrices for such manufacturing processes are plate-shaped and consist of hard plastic. It is very likely that the matrices will be damaged when they are removed from the hardened artificial stone and will therefore be lost. This makes the production of artificial stones significantly more expensive.
  • the present invention is therefore based on the object of improving the device according to the type mentioned at the outset in such a way that the manufacturing process for the artificial stone slabs is made cheaper, the device at the same time having a simple structure.
  • the mold frame is designed as an open-topped mold box, that the die is also box-shaped with a die bottom and die side walls, the outer dimensions of the die corresponding to the inner dimensions of the die box, and that the die is made of soft elastic, incompressible material, in particular made of soft rubber.
  • the die is placed in the molding box, liquid concrete is poured into the die, after the concrete has hardened, the artificial stone and the die are removed from the molding box and finally the die is removed from the finished artificial stone, which is easily possible due to its soft elasticity is.
  • the soft, box-shaped matrix which is made of soft rubber in particular, is not damaged and can be reused.
  • the die has an outward turning circumferential along the upper edge of the die side walls, which is used to be placed over the upper edges of the molding box in order to insert the box-shaped die into the mold frame Condition to fix securely on the mold frame. Furthermore, the die can be gripped in a simple manner on this inside out when pulling off the finished artificial stone.
  • the side walls of the molding box are expediently inclined slightly outwards in order to facilitate demolding of the hardened artificial stone.
  • the molding box preferably has, at the upper end regions of at least two opposite side walls, projections which extend outward and can be spanned by the overturning of the die and which can expediently be bead-like and encircling all side walls. These projections serve to securely fix the outwardly facing everting of the die to the mold frame.
  • a preferably circumferential groove is formed on the die bottom, the outer groove of which Flank is preferably in one plane with the die side walls. If the groove is formed in the preferred position on the edge of the die base, it ensures that the die can be inserted neatly into the interior of the mold frame and with its edge area lies snugly against the die side walls and the die bottom.
  • the groove is connected to a through opening according to a further advantageous feature of the invention, when the die is inserted into the molding box, trapped air can escape to the outside between the inside of the molding box and the outside of the die, so that any formation of bubbles is reliably avoided becomes, which leads to a high quality of the artificial stone surface.
  • One or more through openings can be provided in the molding box, which connect the inside of the molding box in the bottom region to the outside of the molding box, and these through openings are also used according to the invention to press a fluid between the bottom of the molding box and the die bottom in the case of hardened artificial stone, so that for the purpose of Demolding the artificial stone including the female mold is lifted off the molding box.
  • Compressed air is expediently used as the fluid, and the compressed air is expediently blown in when the device, including the hardened artificial stone, has been turned through 180 °, so that when the compressed air is blown in, the mold frame automatically lifts off from the artificial stone, including the die.
  • a major advantage of the device or die according to the invention is that, due to the fact that the die also has side walls in addition to the die bottom, the side walls of the artificial stone slab to be produced can also be given the desired shape.
  • the die side walls therefore have an upper, thinner side wall area and a lower, inwardly reinforcing thicker side wall area, which extends to the die bottom.
  • the upper side wall area is expediently connected to the lower side wall area via a bevel running from the top outside to the bottom.
  • the transition from the upper wall area to the lower wall area is preferably in the lower half of the side wall and the difference between the thicker and thinner wall area is 0.5 to 5 mm, preferably approximately 1 mm.
  • the artificial stone made with such a matrix has side surfaces which are designed to project outwards in a lower region relative to the remaining upper region.
  • the artificial stone slabs can be placed abutting, whereby there is always a constant joint of defined width between the individual slabs, which on the one hand significantly simplifies the laying work and on the other hand greatly reduces the risk of damage to the outer upper edges of the slab during the laying work.
  • the die has an inward-facing projection which runs along the upper edge region of the die side walls and has a bevel on the underside which adjoins the die side wall and runs obliquely inwards from here.
  • Such a design of the die leads to an artificial stone slab, the lower edges of which have a circumferential phase, as a result of which damage to the artificial stone is further reduced, in particular during storage, during transport and during laying.
  • the artificial stones can now also be provided with the desired profiling or structure on their side walls.
  • artificial stones can also be shaped of paving stones, paving stone dressings or the like.
  • the device comprises a rectangular molding box 10 and a die 12 which can be inserted and removed therein.
  • the molding box 10 can be made of metal, concrete, hard plastic or hard rubber, depending on special requirements.
  • the molding box 10 comprises a bottom 14 and four side walls 16. The height of the side walls 16 corresponds approximately to the height of the artificial stone slab to be produced in the molding box.
  • a circumferential groove 18 is formed along the edge of the base 14, the outer wall 20 of which lies in a plane with the inner surface 22 of the side wall 16.
  • a horizontally running bore 24 is arranged in a side wall 16 or the bottom 14 that it ends in the outer wall 20 of the groove 18.
  • the inner surfaces 22 of the side walls 10 are slightly inclined with respect to the vertical V for the purpose of simplified demolding, as is particularly clear from FIG. 1.
  • an outwardly extending, arcuate bulge 26 is formed on the upper edge, which is circumferential around the upper edge region of the molding box 10 and serves to fix the position of the die described below.
  • a plurality of recesses 27 are formed which, on the one hand, reduce the weight of the molding box 10 and can also serve for centering purposes.
  • the overall box-shaped or trough-shaped die 12 consists of a soft, non-compressible material such as, in particular, soft rubber.
  • the die 12 comprises a die bottom 28, integrally molded thereon, upwardly extending die side walls 30 and an outward turning portion 32 running around the upper edge of the die side walls.
  • the outside dimension of the die bottom 28 corresponds to the inside dimension of the bottom 14 of the molding box 10, and the height of the die side walls 30 (excluding the circumferential everting 32) corresponds to the internally measured height of the side walls 16 of the molding box 10.
  • the upward-facing inner side 34 of the die base 28 is molded from a natural stone such as travertine or, preferably, from an original form made therefrom and accordingly represents a negative of the surface of the artificial stone to be produced. Accordingly, the inner side 34 is structured and in accordance with the shape of the natural stone to be reproduced In the case of travertine, it has, if necessary, undercuts 36 which correspond to the corresponding depressions of a ground travertine plate. After the die is obtained, for example, by casting or pressing rubber material off the surface to be reproduced, these shaping elevations 36 are formed in one piece with the die bottom 28.
  • the wall thickness of the die side walls is greater in a lower area than in an upper area.
  • the upper, thinner side wall region 38 is connected to the lower, thicker side wall region 40 via a bevel 42 which runs from the top outside inward to the bottom.
  • the difference in thickness between the two side wall regions 38 and 40 can be, for example, 1 mm.
  • an inwardly extending, circumferential projection 44 is formed in one piece with the die side walls, which has a bevelled underside 46 which, starting from the die side walls 30, runs obliquely inwards upwards.
  • the molding box 10 widens somewhat due to the slight inclination of the side walls 16, a corresponding cross-sectional expansion of the die 12 is not provided in the unloaded state.
  • the trough-shaped die 12 is first inserted into the molding box 10 and the inverted portion 32 is pulled over the circumferential bead 26, the inverted portion 32 engaging behind the bead 26.
  • the die 12 is stabilized and held securely on the molding box 10, so that it is avoided that when the liquid concrete is poured into the molding box or into the die, the die side walls or their edge regions fold inwards.
  • the die 12 inserted into the molding box 10 and drawn with its everting 32 over the side walls 16 is thus held under tension on the molding box 10.
  • the die 12 is flat without an attachment, so that it can lie against the side walls 16 of the molding box 10 in a corrugated manner.
  • the underside of the die bottom 28 is also flat and completely smooth.
  • the lower outer edge regions 48 of the die 12 can always lie snugly and evenly against the side walls 16 and the bottom 14. Any air pockets between the die 12 and the molding box 10 can escape to the outside via the circumferential groove 18 and the bore 24, which is connected to the groove 18.
  • Liquid concrete is poured into the molding box 10 lined with the die 12, approximately to the level of the inner edge of the beveled underside 46 of the projection 44.
  • the liquid concrete is now set in vibration by means of a vibrating device (not shown in more detail), for which purpose the molding box, for example a vibrating table can be arranged.
  • the molding box 10 including the die 12 and hardened concrete, is turned through 180 °, which can be done mechanically, in particular, in a suitable manner, not shown. Subsequently, compressed air is blown in via the bore 24 and the circumferential groove 18 between the bottom 14 of the molding box 10 and the underside of the die bottom 28, so that the molding box 10 lifts off the concrete block which is now finished.
  • the die 12 initially remains on the finished artificial stone.
  • the liquid concrete is poured into the untreated matrix, so that no layer of grease or the like is required in order to enable or facilitate the subsequent detachment of the matrix from the artificial stone.
  • the die 12 is made of very elastic soft rubber, there is no risk of bulging of the cast artificial stones after the die 12 is supported on all sides by the molding box 10 and the rubber material is soft, but not compressible, so that it does not change its volume when loaded.
  • FIG. 3 artificial stones 50 produced by means of the device described above are shown juxtaposed.
  • the structure of the upper side 52 of the artificial stone 50 corresponds to the structure of the inner side 34 of the die base 28.
  • the artificial stone 50 has circumferential projections 56 which extend to about 15 mm below the upper side 52 of the artificial stone plate 52. If, during later laying of the artificial stone slabs, the individual artificial stone slabs are placed next to one another, a joint 60 of precisely defined width is created between adjacent artificial stone slabs 50, namely twice the width of the projections 56. This considerably simplifies the clean laying of the artificial stone slabs. The laying work can also be done by non-specialists without any special knowledge regarding joint spacing and the like.
  • Another advantage of the circumferential projections 56 is that when the stones collide, in particular during laying, only the lower circumferential projections butt against each other, so that the upper edges of the artificial stone slabs, which are visible even after installation, are protected from damage.
  • the artificial stones 50 each have a circumferential phase 58, which was formed by the circumferential projection 44 of the die 12 and which removes the sharp edges from the lower edges of the artificial stone 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP88105413A 1987-04-13 1988-04-05 Vorrichtung zum Herstellen eines Kunststeines Withdrawn EP0286949A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873712480 DE3712480A1 (de) 1987-04-13 1987-04-13 Vorrichtung zum herstellen eines kunststeines
DE3712480 1987-04-13

Publications (1)

Publication Number Publication Date
EP0286949A1 true EP0286949A1 (de) 1988-10-19

Family

ID=6325527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105413A Withdrawn EP0286949A1 (de) 1987-04-13 1988-04-05 Vorrichtung zum Herstellen eines Kunststeines

Country Status (6)

Country Link
EP (1) EP0286949A1 (enrdf_load_html_response)
AU (1) AU1626888A (enrdf_load_html_response)
CH (1) CH676943A5 (enrdf_load_html_response)
DE (2) DE3712480A1 (enrdf_load_html_response)
FR (1) FR2613656B1 (enrdf_load_html_response)
WO (1) WO1988007920A1 (enrdf_load_html_response)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010546A1 (en) * 1990-01-11 1991-07-25 Swerad Heat Radiating Concrete Ab A mould for moulding of a thermosetting substance
NL1002858C2 (nl) * 1996-04-12 1997-10-15 Boer Beton Den Inrichting alsmede werkwijze voor het vervaardigen van vormlingen, zoals tegels.
DE19729484A1 (de) * 1997-07-10 1999-02-11 Anton Wilhelm Verfahren zum Gießen von Gußkörpern, insbesondere von Zierelementen aus Gips oder Beton und Vorrichtung zur Durchführung des Verfahrens
WO2004062866A1 (en) * 2003-01-11 2004-07-29 Numold (Uk) Limited Mould having flexible sidewalls with support members for moulding building products
FR2876311A1 (fr) * 2004-10-07 2006-04-14 Lib Ind Soc Par Actions Simpli Module pourvu de moyens facilitant le demoulage de pieces en beton
DE102010017745A1 (de) * 2010-07-05 2012-01-05 Albrecht Braun Gmbh Verfahren zur Herstellung eines Betonsteins und Betonstein
EP2495374A1 (fr) * 2011-03-04 2012-09-05 Lib Industries SAS Construction à murs porteurs et planchers réalisés en panneaux préfabriqués en beton et moules de fabrication

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673428A5 (enrdf_load_html_response) * 1987-06-05 1990-03-15 Willi Ruckstuhl
DE19504782C5 (de) * 1995-02-14 2013-03-28 Roland Müller Verfahren und Formkörper für die Herstellung von künstlichen Felsformationen
CA2544152C (en) * 2005-04-21 2013-06-11 Les Materiaux De Construction Oldcastle Canada Inc./ Oldcastle Building Products Canada Inc. Improvement in a molding apparatus for producing dry cast products having textured side surfaces
US9758943B1 (en) * 2013-02-08 2017-09-12 Edward J. Anderson Molded concrete blocks having simulated brick or stone outer surfaces and method of making same
US20220234261A1 (en) * 2019-06-14 2022-07-28 Medical Soparfi S.A Mould for the production of slabs and relative forming method
DE102023112231A1 (de) 2023-05-10 2024-11-14 Reckli Gmbh Matrize zur Strukturierung von Bauwerksflächen

Citations (13)

* Cited by examiner, † Cited by third party
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BE429228A (enrdf_load_html_response) *
BE519562A (enrdf_load_html_response) *
FR1418451A (fr) * 1964-12-02 1965-11-19 Moule pour fabriquer des blocs de pierres artificielles ayant une texture superficielle correspondant à celle de la pierre naturelle
FR1423930A (fr) * 1964-11-25 1966-01-07 Procédé consistant à produire en béton moulé des plaques ayant l'apparence de pierres naturelles quant à leur relief
GB1127761A (en) * 1964-07-10 1968-09-18 4D Res And Dev Co Ltd Improvements in the production of castings from mouldable materials
CH497956A (de) * 1968-09-14 1970-10-31 Schimmel Stay Annemarie Verfahren zur Herstellung einer Giessform zur Herstellung eines Kunststeines
GB1294314A (en) * 1969-04-23 1972-10-25 Robert Hearne Minter Improvements in the casting of materials
FR2199283A5 (en) * 1972-09-11 1974-04-05 Dynamit Nobel Ag Sheet thermoplastic mould box - for staircase treads of concrete or synthetic marble, can be reused and easily demoulded
US3883109A (en) * 1967-10-06 1975-05-13 Pre Cast Concrete Products Lim Mold for making meter box covers and the like
FR2252185A1 (enrdf_load_html_response) * 1973-11-23 1975-06-20 Selvaagebygg As
US4181286A (en) * 1977-03-28 1980-01-01 Doren David A Van Reinforced plastic mold for concrete panels
FR2469992A1 (fr) * 1979-11-20 1981-05-29 Barbier Rene Moule destine a la fabrication de plaques et notamment de plaques en platre
DE3135979A1 (de) * 1981-09-11 1983-03-31 Peter 8602 Memmelsdorf Reuss Vorrichtung zum ausformen von betonplatten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19763C (de) * A. pelletier in Washington und T luna in Los Lunas, Neu Mexico, V. St. A Neuerungen an Strafsenpflasterungen
DE611210C (de) * 1935-03-23 Franz Poetz Aus mehreren Bloecken bestehende Pflasterplatte
DE1021287B (de) * 1953-09-22 1957-12-19 Wayss & Freytag Ag Vorrichtung zum Entschalen von Betonformlingen
DE8414542U1 (de) * 1984-05-12 1984-09-13 Jean Dern & Co GmbH, 6300 Gießen Bodenplatte aus beton

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519562A (enrdf_load_html_response) *
BE429228A (enrdf_load_html_response) *
GB1127761A (en) * 1964-07-10 1968-09-18 4D Res And Dev Co Ltd Improvements in the production of castings from mouldable materials
FR1423930A (fr) * 1964-11-25 1966-01-07 Procédé consistant à produire en béton moulé des plaques ayant l'apparence de pierres naturelles quant à leur relief
FR1418451A (fr) * 1964-12-02 1965-11-19 Moule pour fabriquer des blocs de pierres artificielles ayant une texture superficielle correspondant à celle de la pierre naturelle
US3883109A (en) * 1967-10-06 1975-05-13 Pre Cast Concrete Products Lim Mold for making meter box covers and the like
CH497956A (de) * 1968-09-14 1970-10-31 Schimmel Stay Annemarie Verfahren zur Herstellung einer Giessform zur Herstellung eines Kunststeines
GB1294314A (en) * 1969-04-23 1972-10-25 Robert Hearne Minter Improvements in the casting of materials
FR2199283A5 (en) * 1972-09-11 1974-04-05 Dynamit Nobel Ag Sheet thermoplastic mould box - for staircase treads of concrete or synthetic marble, can be reused and easily demoulded
FR2252185A1 (enrdf_load_html_response) * 1973-11-23 1975-06-20 Selvaagebygg As
US4181286A (en) * 1977-03-28 1980-01-01 Doren David A Van Reinforced plastic mold for concrete panels
FR2469992A1 (fr) * 1979-11-20 1981-05-29 Barbier Rene Moule destine a la fabrication de plaques et notamment de plaques en platre
DE3135979A1 (de) * 1981-09-11 1983-03-31 Peter 8602 Memmelsdorf Reuss Vorrichtung zum ausformen von betonplatten

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991010546A1 (en) * 1990-01-11 1991-07-25 Swerad Heat Radiating Concrete Ab A mould for moulding of a thermosetting substance
NL1002858C2 (nl) * 1996-04-12 1997-10-15 Boer Beton Den Inrichting alsmede werkwijze voor het vervaardigen van vormlingen, zoals tegels.
DE19729484A1 (de) * 1997-07-10 1999-02-11 Anton Wilhelm Verfahren zum Gießen von Gußkörpern, insbesondere von Zierelementen aus Gips oder Beton und Vorrichtung zur Durchführung des Verfahrens
DE19729484C2 (de) * 1997-07-10 2003-04-30 Anton Wilhelm Verfahren zum Gießen von Gußkörpern, insbesondere von Zierelementen aus Gips oder Beton und Vorrichtung zur Durchführung des Verfahrens
WO2004062866A1 (en) * 2003-01-11 2004-07-29 Numold (Uk) Limited Mould having flexible sidewalls with support members for moulding building products
GB2397270B (en) * 2003-01-11 2005-02-23 Numold Mould
FR2876311A1 (fr) * 2004-10-07 2006-04-14 Lib Ind Soc Par Actions Simpli Module pourvu de moyens facilitant le demoulage de pieces en beton
WO2006040425A1 (fr) * 2004-10-07 2006-04-20 Lib Industries Sas Procede et moule pour le demoulage automatique de pieces moulees
DE102010017745A1 (de) * 2010-07-05 2012-01-05 Albrecht Braun Gmbh Verfahren zur Herstellung eines Betonsteins und Betonstein
EP2495374A1 (fr) * 2011-03-04 2012-09-05 Lib Industries SAS Construction à murs porteurs et planchers réalisés en panneaux préfabriqués en beton et moules de fabrication

Also Published As

Publication number Publication date
DE3712480A1 (de) 1988-11-03
DE8717632U1 (de) 1989-08-31
WO1988007920A1 (en) 1988-10-20
CH676943A5 (enrdf_load_html_response) 1991-03-28
FR2613656B1 (fr) 1995-03-17
AU1626888A (en) 1988-11-04
FR2613656A1 (fr) 1988-10-14

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