EP3877126B1 - Verfahren zur herstellung von betonfertigteilen mit hilfe einer gussform - Google Patents

Verfahren zur herstellung von betonfertigteilen mit hilfe einer gussform Download PDF

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Publication number
EP3877126B1
EP3877126B1 EP19817119.1A EP19817119A EP3877126B1 EP 3877126 B1 EP3877126 B1 EP 3877126B1 EP 19817119 A EP19817119 A EP 19817119A EP 3877126 B1 EP3877126 B1 EP 3877126B1
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EP
European Patent Office
Prior art keywords
mold
precast concrete
hardening
molding compound
formwork
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.)
Active
Application number
EP19817119.1A
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German (de)
English (en)
French (fr)
Other versions
EP3877126A1 (de
EP3877126C0 (de
Inventor
Gerold WIMMER
Franz Filzmoser
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Individual
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Individual
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Publication of EP3877126A1 publication Critical patent/EP3877126A1/de
Application granted granted Critical
Publication of EP3877126C0 publication Critical patent/EP3877126C0/de
Publication of EP3877126B1 publication Critical patent/EP3877126B1/de
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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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • 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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/346—Manufacture of 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
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
    • 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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials 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
    • B28B7/36—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

Definitions

  • the invention relates to a method for producing precast concrete parts using casting molds.
  • EP0313048A2 and DE3603527A1 describe a method for producing precast concrete parts with a mold according to the preamble of claim 1.
  • a basic mold made of metal for example, is filled with a molding compound which, after hardening, is modeled with a processing machine.
  • the modeled area of the molding compound is then filled with concrete, after which the precast concrete part is lifted out of the mold after it has hardened.
  • Analogous to that from the US20100117248A1 known methods there is also the disadvantage here of a considerable processing effort in the case of large volumes to be removed.
  • the invention is therefore based on the object of improving a method of the type described at the outset in such a way that precast concrete parts can be produced in a time-efficient manner despite changing, complex geometries and the industrial waste produced is reduced in the process.
  • the invention solves the problem in that a basic form defined by boundary elements is filled with a liquefied molding compound up to a mold cavity height that is smaller than the height of the precast concrete part, after which the mold cavity is modeled from the hardened molding compound before the basic mold is filled with the the mold cavity arranged therein is filled with concrete and, after the concrete has hardened, the mold cavity is brought to the melting temperature of the molding compound and melted, the delimiting elements being formed from a molding compound and also being melted after the concrete has hardened.
  • the mold is formed in at least three steps.
  • the volume encompassed in this way must be proportionally larger than the volume of the cast concrete part.
  • the basic mold is then filled with the liquefied molding compound and only to the extent that a defined mold cavity height is reached.
  • the filling can be done in a particularly simple manner by pouring liquefied molding material, but other material-applying methods are also possible.
  • the mold cavity height is understood to be the height of that volume into which one or more projections of the precast concrete part to be cast protrude, starting from a base extending up to the delimiting elements.
  • the hardened molding that fills the basic form up to the height of the mold cavity can be modeled, with either material removal, for example by automated milling, or material application, for example by additive application of molding compound.
  • material removal for example by automated milling
  • material application for example by additive application of molding compound.
  • the basic mold with the mold cavity arranged in it is filled with a concrete mass, after which it hardens.
  • the mold cavity is brought to the melting point, i.e. to a temperature that is higher than the melting point of the molding compound used.
  • the molding compound liquefied in this way can then flow off and be reused for a new mold cavity, for example by pouring it into a new basic mold.
  • Various low-melting materials such as wax, polymers, especially thermoplastics or other materials that can be used in an obvious manner by a person skilled in the art can be used as the molding compound, with the respective melting temperature of the molding compound having to be higher than the maximum temperature occurring during the curing process.
  • the delimiting elements be formed from a molding compound and, after hardening of the Concrete are also melted.
  • the molding compound used for the delimiting elements can be identical to the molding compound used for the mold cavity, or it can differ from the mold cavity in terms of chemical or physical properties.
  • the use of the molding compound as a delimiting element means that greater flexibility can be achieved in the design of the entire casting mold.
  • both the mold cavity and the delimiting elements can be modeled using identical separation or forming methods or by means of identical additive methods.
  • the hardening be carried out in a hardening chamber, with the hardening temperature being below the melting temperature of the molding compound.
  • the heat transfer from the curing chamber to the concrete can take place both through thermal radiation and convection of external heating elements, as well as through direct contact with inductive heating elements.
  • the temperature settings used for this must be selected in such a way that premature melting of the mold is avoided.
  • catch basins for the melting molding compound can be arranged.
  • a formwork device for carrying out the method described above Has a delimiting element made of a hardened molding compound, in which an anchor is cast with an outwardly projecting point of application.
  • the formwork devices can be maneuvered and aligned with the help of lifting devices.
  • the anchor flukes can be designed as reinforcements.
  • Elaborate formwork devices usually have a large number of delimiting elements that have to be positively connected to one another and to the base of the mold, for example using screw systems.
  • the disadvantage of this is that the delimiting elements and the mold base are already pre-damaged by the screw connection elements, so that readjustment of the connection and thus the basic shape geometry is only possible to a limited extent.
  • a carrier connected to the delimiting element which is detachably connected to a magnet for positioning the formwork device on a mold base.
  • a carrier connected to the delimiting element which is detachably connected to a magnet for positioning the formwork device on a mold base.
  • this makes it possible in a simple manner to arrange the formwork device on the mold base as specified by the mold maker, and to easily readjust the basic mold geometry formed in the process.
  • Particularly favorable conditions arise, for example, when the magnet is designed as an electromagnet. If a delimiting element is erroneously placed in the wrong position, the frictional connection can be canceled by switching off the electromagnet, which leads to easy loosening of said element and enables simple readjustment of the basic shape geometry formed.
  • the magnet can be connected to the carrier by means of fastening mechanisms that are obvious to a person skilled in the art.
  • magnets can be attached to the delimitation element via a tongue and groove connection fastened carrier to be fixed.
  • the groove is formed obliquely downwards in the direction of the base of the mold, so that the groove-tongue connection can only be released by lifting the magnet is.
  • the carrier itself can be fastened to the delimiting element by spinous extensions formed by the carrier which protrude into the delimiting element, or by means of a bracket which at least partially surrounds the delimiting element, with other implementations known to those skilled in the art also being conceivable in principle.
  • the magnet can be cast into the delimiting element. This has the advantage that fewer components are required for the formwork device, which have to be collected and cleaned after the delimiting elements have melted.
  • incorrect placement of the restraining members as a result of the occurrence of a repulsive force can be prevented, while guided fusion is induced if they are properly matched.
  • a basic mold 2 defined by delimiting elements 1 is filled with a liquefied molding compound 3 up to a mold cavity height h, as is shown in 1 can be seen.
  • the processing volume to be modeled is kept small and therefore the design of the in 2 Form nests 4 shown can be carried out in a time-saving manner.
  • the modeling can take place in a separation or forming process or, according to some embodiment variants, also by means of an additive process.
  • the basic mold 2 with the mold cavity 4 arranged therein is filled with a concrete mass 5, after which the concrete mass 5 hardens.
  • the basic mold 2 forms the mold 6 together with the mold cavity 4.
  • the mold cavity 4 can be melted down in an energy-saving manner due to the low melting temperature of the molding compound 3 used, which means that the precast concrete part can be easily detached from the mold 6 and the molding compound 3 can be reused for a new mold cavity 4 allows.
  • waxes, polymers, above all thermoplastics, or other materials which can be used in an obvious manner by a person skilled in the art can be used as the molding compound 3 .
  • the delimiting elements 1 forming the basic form 2 are also formed from a molding compound 3, which ensures that the complete casting mold 6 can be recycled.
  • both the delimiting elements 1 and the mold cavity 4, which has been brought to the melting temperature will flow off and the molten molding compound 3 will be collected.
  • the edge regions 7 of the mold 6 can be designed particularly flexibly.
  • the edge regions 7 can be modeled identically to the mold cavity 4 if any modeling device or at least its tool head is designed to be movable.
  • anchors 8 can be cast into the delimiting elements 1 with a point of application 9 protruding from the latter.
  • the anchor flukes 10 can be designed in the sense of reinforcement, as a result of which the delimiting elements 1 are given greater stability.
  • the mold 6 can, like the Figures 1 and 2 it can be seen that carriers 14 connected to a magnet 11 can be arranged on the delimiting elements 1 in order to fix the delimiting elements 1 to the base 12 of the mold.
  • the at least partially ferromagnetic mold base 12 can be formed, for example, by a production table.
  • the attachment between the magnet 11 and the carrier 14 can take place via a detachable tongue and groove connection, it being particularly advantageous if the groove is formed obliquely downwards in the direction of the mold base 12 so that the tongue and groove connection can be released is only possible by lifting the magnet 11.
  • the carrier 14 can form spinous processes that protrude into the delimiting element 11, although other implementations known to those skilled in the art for fastening the carrier 14 to the delimiting element 1 are of course also possible.
  • magnets 11 can be cast into the delimiting elements 1, as a result of which both a non-positive connection of the delimiting elements 1 with one another and with the at least partially ferromagnetic mold base 12 can be achieved.
  • magnets 11 are designed as electromagnets, if the alignment on the mold base 12 is incorrect, switching off the electromagnets 11 can also eliminate a frictional connection between the mold base 12 and the delimiting elements 1, which promotes problem-free readjustment.
  • FIG. 3 a top view of a basic form 2 formed by delimiting elements 1 according to the invention is shown.
  • angle fittings 13 can be provided for connecting the delimiting elements 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
EP19817119.1A 2018-11-06 2019-11-05 Verfahren zur herstellung von betonfertigteilen mit hilfe einer gussform Active EP3877126B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50950/2018A AT521840B1 (de) 2018-11-06 2018-11-06 Verfahren zur Herstellung von Betonfertigteilen mit Hilfe einer Gussform
PCT/AT2019/060373 WO2020093078A1 (de) 2018-11-06 2019-11-05 Verfahren zur herstellung von betonfertigteilen mit hilfe einer gussform

Publications (3)

Publication Number Publication Date
EP3877126A1 EP3877126A1 (de) 2021-09-15
EP3877126C0 EP3877126C0 (de) 2023-06-07
EP3877126B1 true EP3877126B1 (de) 2023-06-07

Family

ID=70610653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19817119.1A Active EP3877126B1 (de) 2018-11-06 2019-11-05 Verfahren zur herstellung von betonfertigteilen mit hilfe einer gussform

Country Status (4)

Country Link
EP (1) EP3877126B1 (pl)
AT (1) AT521840B1 (pl)
PL (1) PL3877126T3 (pl)
WO (1) WO2020093078A1 (pl)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS223266B1 (en) * 1981-08-04 1983-09-15 Lubomir Kupf Plast mould for casting the concrete experimental cubes
CN86100851A (zh) * 1985-02-13 1986-09-10 Mnk建筑公司 制造模板的方法
DE3735806C1 (de) * 1987-10-22 1989-02-02 Klaus Dittmann Verfahren zur automatischen Herstellung von Sonderteilen aus Beton oder Stahlbeton
JP2516191B2 (ja) * 1992-08-20 1996-07-10 勝也 平岡 コンクリ―ト製品の脱型方法
JP2001105420A (ja) * 1999-10-08 2001-04-17 Maeda Seikan Kk コンクリート製品の製造方法
US20100117248A1 (en) 2007-05-18 2010-05-13 Newton Concrete Aps Amorphous Formwork
DE102007063561A1 (de) * 2007-12-30 2009-07-09 Hochschule für Technik und Wirtschaft Dresden (FH) Verfahren und Anordnung zur Erstellung von Bauwerken
CA2909909C (en) * 2013-02-21 2020-10-27 Laing O'rourke Australia Pty Limited Method for casting a construction element
US20170274556A1 (en) * 2014-08-15 2017-09-28 Laing O'rourke Australia Pty Limited Method for Fabricating a Composite Construction Element

Also Published As

Publication number Publication date
AT521840B1 (de) 2021-04-15
AT521840A1 (de) 2020-05-15
EP3877126A1 (de) 2021-09-15
EP3877126C0 (de) 2023-06-07
WO2020093078A1 (de) 2020-05-14
PL3877126T3 (pl) 2023-09-18

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