WO1988007920A1 - Dispositif de fabrication de pierres artificielles - Google Patents

Dispositif de fabrication de pierres artificielles Download PDF

Info

Publication number
WO1988007920A1
WO1988007920A1 PCT/EP1988/000305 EP8800305W WO8807920A1 WO 1988007920 A1 WO1988007920 A1 WO 1988007920A1 EP 8800305 W EP8800305 W EP 8800305W WO 8807920 A1 WO8807920 A1 WO 8807920A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
molding box
artificial stone
side walls
side wall
Prior art date
Application number
PCT/EP1988/000305
Other languages
German (de)
English (en)
Inventor
Karl-Heinz HÖTZEL
Original Assignee
Hötzel-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 Hötzel-Beton Gmbh filed Critical Hötzel-Beton Gmbh
Publication of WO1988007920A1 publication Critical patent/WO1988007920A1/fr

Links

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 molding frame and an elastic die inserted or placed in the die frame, and a corresponding die.
  • the present invention relates to the production of such artificial stones which are shaped from a natural stone non-uniform such as travertine, which has a / surface structure with partially significantly undercut depressions.
  • the s recesses 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 kart 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 a mold box open at the top, that the mold is also box-like with a mold base and mold side. is formed, wherein the outer dimensions of the die correspond to the inner dimensions of the molded 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 die which is made especially of soft rubber, 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 projections which extend outward and can be spanned by the inside-out 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 Flank is preferably in one plane with the matrix 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.
  • One or more through openings can be provided in the molding box, which connect the inside of the molding box in the floor area to the outside of the molding box, and these through openings are additionally used according to the invention to press a fluid between the molding box base and the die base in the case of hardened artificial stone, so that for the purpose of De-molding the artificial stone including the die 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.
  • the die side walls also have an upper, thinner side wall area and a lower, inwardly reinforcing thicker side wall area, which extends to the bottom of the die.
  • the upper side wall area with the lower side wall area is expedient here. connected via a bevel running from the top outside to the bottom inside.
  • 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 one another, whereby a constant joint of defined width is always present 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 board 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 on their side walls with the desired profiling or structure.
  • artificial stones can also be shaped of paving stones, paving stone dressings or the like.
  • Fig. 2 is a partial sectional view of FIG. 1 with the die inserted in the molding box
  • Fig. 3 is a perspective view of the artificial stone slabs produced by means of the device according to the invention.
  • the device comprises a rectangular molding box 10 and a removable die 12 which can be inserted therein.
  • the molding box 10 can be made of metal, concrete, hard plastic or hard rubber, depending on the specific 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 such 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 bead 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-like or trough-shaped die 12 consists of soft, non-compressible material such as, in particular, soft rubber.
  • the die 12 includes one
  • Die bottom 28 integrally molded thereon, upwardly extending die side walls 30 and an outward-facing everting 32 running along the upper edge of the die side walls.
  • the outside dimension of die bottom 28 corresponds to the inside dimension of bottom 14 of mold box 10
  • the height of die side walls 30 (excluding the circumferential inversion 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 therefore 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 re-shaped In the case of travertine, it has, if appropriate, undercuts 36 which correspond to the corresponding depressions in a ground travertine plate. After the die has been obtained, for example, by casting or pressing rubber material from the surface to be reproduced, these shaping elevations 36 are formed in one piece with the die bottom 28. As is clear from FIG. 2, the wall thickness of the die side walls is greater in a lower area than in an upper area. The upper, thinner side wall area 38 is connected to the lower, thicker side wall area 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 protuberance 32 is pulled over the circumferential bead 26, the protuberance 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 boxes 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 On the outside, the die 12 has a flat shape 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 base 2S is also flat and completely smooth. Due to the circumferential groove 18 on the edge of the bottom 14 of the molding box 10, 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 inclusions 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 up to the height of the inner edge of the beveled underside 46 of the projection 44.
  • the liquid concrete is now set in vibration by a vibrating device, not shown, 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 in particular be done mechanically in a suitable manner, not shown in detail. 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 is. the now finished concrete block stands out.
  • the die 12 initially remains on the finished artificial stone.
  • the die is filled in, so that no layer of fat or the like is required to enable or facilitate the subsequent detachment of the die 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 although soft elastic, but is not compressible bar, so that it does not change its volume under load.
  • 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 the individual artificial stone slabs are placed next to one another when the artificial stone slabs are laid later, 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 collide, 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)

Abstract

Afin de produire des pierres artificielles en béton, une matrice concave (12) en forme de cuve en caoutchouc souple est placée dans un châssis de moulage (10) et fixée aux parois latérales (16) du châssis de moulage (10) par un rebord replié (32). Une fois le béton durci, de l'air comprimé est insufflé entre le châssis de moulage (10) et la matrice (12) par un alésage (24) en communication avec une rainure (18) continue formée dans le fond (14) du châssis de moulage (10), de façon à séparer le châssis de moulage (10) de la pierre artificielle. On enlève ensuite la matrice souple (12) de la pierre artificielle.
PCT/EP1988/000305 1987-04-13 1988-04-11 Dispositif de fabrication de pierres artificielles WO1988007920A1 (fr)

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
DEP3712480.3 1987-04-13

Publications (1)

Publication Number Publication Date
WO1988007920A1 true WO1988007920A1 (fr) 1988-10-20

Family

ID=6325527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/000305 WO1988007920A1 (fr) 1987-04-13 1988-04-11 Dispositif de fabrication de pierres artificielles

Country Status (6)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8101113B2 (en) * 2005-04-21 2012-01-24 Oldcastle Building Products Canada, Inc. Molding apparatus for producing dry cast products having textured side surfaces
WO2020250013A1 (fr) * 2019-06-14 2020-12-17 Parc Immobilière Sa Moule pour la production de dalles et procédé de formage associé
US11053656B1 (en) * 2013-02-08 2021-07-06 Mortarless Technologies Llc Method of making molded concrete blocks having simulated brick or stone outer surfaces

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673428A5 (fr) * 1987-06-05 1990-03-15 Willi Ruckstuhl
SE466051B (sv) * 1990-01-11 1991-12-09 Swerad Heat Radiating Concrete Gjutform foer gjutning av ett haerdbart material
DE19504782C5 (de) * 1995-02-14 2013-03-28 Roland Müller Verfahren und Formkörper für die Herstellung von künstlichen Felsformationen
NL1002858C2 (nl) * 1996-04-12 1997-10-15 Boer Beton Den Inrichting alsmede werkwijze voor het vervaardigen van vormlingen, zoals tegels.
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
GB2397270B (en) * 2003-01-11 2005-02-23 Numold Mould
FR2876311B1 (fr) * 2004-10-07 2014-11-21 Lib Ind Procede et moule pour la fabrication de pieces en beton ou en platre
DE102010017745A1 (de) * 2010-07-05 2012-01-05 Albrecht Braun Gmbh Verfahren zur Herstellung eines Betonsteins und Betonstein
FR2972205A1 (fr) * 2011-03-04 2012-09-07 Lib Ind Construction a murs porteurs et planchers realises au moyen de panneaux prefabriques en beton

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519562A (fr) *
BE429228A (fr) *
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 (fr) * 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
BE429228A (fr) *
BE519562A (fr) *
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 (fr) * 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8101113B2 (en) * 2005-04-21 2012-01-24 Oldcastle Building Products Canada, Inc. Molding apparatus for producing dry cast products having textured side surfaces
US11053656B1 (en) * 2013-02-08 2021-07-06 Mortarless Technologies Llc Method of making molded concrete blocks having simulated brick or stone outer surfaces
WO2020250013A1 (fr) * 2019-06-14 2020-12-17 Parc Immobilière Sa Moule pour la production de dalles et procédé de formage associé

Also Published As

Publication number Publication date
AU1626888A (en) 1988-11-04
CH676943A5 (fr) 1991-03-28
FR2613656A1 (fr) 1988-10-14
EP0286949A1 (fr) 1988-10-19
FR2613656B1 (fr) 1995-03-17
DE8717632U1 (fr) 1989-08-31
DE3712480A1 (de) 1988-11-03

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