EP1536933B1 - Partie rapportee pour machines a mouler - Google Patents

Partie rapportee pour machines a mouler Download PDF

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Publication number
EP1536933B1
EP1536933B1 EP03793777A EP03793777A EP1536933B1 EP 1536933 B1 EP1536933 B1 EP 1536933B1 EP 03793777 A EP03793777 A EP 03793777A EP 03793777 A EP03793777 A EP 03793777A EP 1536933 B1 EP1536933 B1 EP 1536933B1
Authority
EP
European Patent Office
Prior art keywords
mould
moulding
relief
nest
insert according
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.)
Expired - Lifetime
Application number
EP03793777A
Other languages
German (de)
English (en)
Other versions
EP1536933A2 (fr
Inventor
Rudolf Braungardt
Erwin Schmucker
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.)
Kobra Formen GmbH
Original Assignee
Kobra Formen 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 Kobra Formen GmbH filed Critical Kobra Formen GmbH
Publication of EP1536933A2 publication Critical patent/EP1536933A2/fr
Application granted granted Critical
Publication of EP1536933B1 publication Critical patent/EP1536933B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
    • 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
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
    • B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets

Definitions

  • the invention relates to a mold insert for molding machines for the production of compacted moldings.
  • Such mold inserts are especially in use devices for the production of concrete blocks and form together with a mold frame a vibrating mold.
  • the mold cavities of the mold insert placed on a vibrating table are filled with concrete mass and closed at the top by pressure stamps. By vibrating the vibrating table, the concrete mass is compacted so much that the subsequently removed from the mold insert damp conglomerates remain dimensionally stable and can be stored for final drying and curing.
  • a mold insert for use in molding machines for the production of concrete blocks, according to the preamble of claim 1 is made DE-U-296 11484 known.
  • the invention has for its object to provide an advantageous mold insert for multi-layer production.
  • the compacted bodies are intended to be inherently dimensionally stable in accordance with the objective of compaction and therefore in the mold insert counteracting the self-balancing force (as well as acceleration or inertial forces possibly occurring during a movement of the mold insert with the compacted moldings) can be held positively.
  • Both properties known per se are advantageously combined in such a way that the positive engagement between recesses in the relief structure in the walls of the mold cavity and protrusions produced in these depressions on compartments of lateral surfaces of the molded body is dimensioned so large that, on the one hand, a (consisting of volume and Material resulting) own weight of the molding excess force is required down to the molding of the molding, which is applied by a vertical movement of the mold insert relative to the compression device also used for compacting in a simple manner, but on the other hand, the positive engagement is limited so that the in the recesses of the relief structure engaging projections on the side walls of the shaped body are not sheared in the forced removal and / or that there are no residues left in the relief structure substantially above the normal level of conventional mold inserts having flat walls.
  • the relief structure also allows in particular the use of mold inserts with hardened walls with very little material adhesion to the concrete mass of the molding.
  • the relief has as support surfaces on which are supported projections of the side surfaces of the compacted molded body, holding flanks, which are inclined obliquely to the interior of the mold cavity down.
  • the angle of these holding surfaces against the vertical is preferably at most 30 °, so that in the forced removal of a sliding of the projections along the retaining flanks with gradual lateral deformation of the material of the shaped body, preferably within the range of elastic deformation takes place.
  • a small permanent deformation of the projections on the side surfaces of the shaped body is not critical, since the function of these projections to keep the shaped body against its weight in the mold insert, omitted after the molding.
  • the weight of the molded article depends not only on the volume but also on the density of the material, which typically does not vary significantly, so that the weight of the compacted molded article can be considered substantially known.
  • the mold insert with the compacted moldings is typically moved vertically and possibly also horizontally after compression and acceleration forces occur here which may not yet cause the moldings to fall out of the mold insert.
  • the depth of the relief structure can be designed for high rigidity with low elastic deformability and the entire holding surface of all retaining flanks for low rigidity with easy deformability of the compacted wet molded body in the context of expected scattering.
  • the relief depth of the relief structure proves to be a depth of a maximum of 1.5 mm, in particular of a maximum of 0.8 mm.
  • the minimum depth is advantageously 0.2 mm.
  • the cumulative Bootrekkung all holding flanks in wall-parallel horizontal direction is at least equal to the circumference of the shaped body, preferably at least equal to twice this circumference.
  • the relief structure can advantageously have successively multiple retaining flanks in the vertical direction which are separated by sections of the relief structure which do not apply holding forces.
  • the relief structure contains concave and / or convex curvatures with a radius of curvature that is large, preferably at least 5 times that of the relief depth.
  • Concave and / or convex curvatures can form a wave-like profile immediately following each other.
  • the relief structure may advantageously comprise elongated, preferably substantially horizontal grooves, in particular with a constant cross section.
  • such grooves advantageously extend over more than half the distance between two adjacent corners.
  • the retaining flanks of the relief structure are preferably present at opposite with respect to the volume of gravity of the mold cavity wall surfaces and / or in rotationally symmetrical arrangement about a vertical center axis of the mold cavity.
  • the terms of the depressions in the relief structure and projections on the side walls are in principle also used in permutation, but relate vividly to a preferred embodiment in which the mold cavity, preferably in the upper edge region, has at least one prismatic section with vertical wall surfaces without relief structure and the relief structure recedes behind the continuation surfaces of this prismatic section.
  • the relief structure is advantageously predominantly, in particular formed to at least 60% in the lower half of the vertical extent of the mold cavity. According to a development, it can be provided that the clear cross section of the mold cavity widens downwards in the course of the relief structure.
  • a mold insert or a section of such a mold insert FE is sketched with a plurality of mold cavities FN with a view from obliquely above into the mold cavities.
  • the mold cavities are in the example sketched approximately rectangular and bounded by side or partition walls WS.
  • the mold cavities are open at the top for filling non-compacted concrete mass and for inserting pressure plates tightly closed with the contour of the mold cavities, which are loaded by a load or otherwise pressed down into the mold cavities.
  • the mold insert is placed in operation on a vibrating table, optionally with the interposition of an intermediate plate and pressed by means of a not shown in the figure with the mold frame down.
  • the vibrating table is stimulated by shock vibration or vibration vibration vibrating vibrations, which are transmitted to the filled concrete material and under the action of stress by the pressure device, the concrete material in a short time so high density that the resulting molded blocks are still moist, but dimensionally stable.
  • the mold insert is placed on a tray, for example a pallet as a first layer or on existing layers after completion of the compaction process while maintaining the relative position of mold insert and printing device.
  • a tray for example a pallet as a first layer or on existing layers after completion of the compaction process while maintaining the relative position of mold insert and printing device.
  • either the pallet instead of the vibrating table under the mold insert or the mold insert including printing plates can be moved sideways over the pallet.
  • the blocks are expressed by the not raised with printing plates of the printing device down from the mold cavities and stored on the shelf or an existing layer of molded bricks for drying and curing.
  • the wall surfaces of the walls WS delimiting the mold cavities are provided with relief structures RS, which in the example shown are found both on wall surfaces NWL extending in the longitudinal direction LR and on wall surfaces NWQ extending in the transverse direction QR.
  • the relief structures have in the preferred embodiment outlined in the form of elongated horizontally extending grooves, which, possibly with interruption, claim the majority of the wall surface in the horizontal direction. In the vertical direction, several such horizontal grooves follow each other.
  • the relief structures RS extend in the example sketched over more than half the height of the side wall surfaces. In the side wall surfaces wells AA are provided to form spacers on the side surfaces of molded bricks.
  • FIG. 2 shows an oblique view of a concrete block produced in a mold cavity FN of the mold insert FE according to FIG. 1, on the side surfaces of which both spacers AH and counter-relief structures GR are complementary structures to the relief structures RS and the recesses AA in the wall surfaces NWL, NWQ of FIG Formnestes have arisen.
  • the edges at the transition from the side wall surfaces to the top surface of the concrete block of FIG. 2 are chamfered by known shaping of the used printing plates.
  • FIG. 3 a horizontal view is partially sketched into a mold cavity cut open along a vertical sectional plane along A - A of FIG. 1.
  • the relief structure RS is located predominantly in the lower half of the edge surface NWL and takes in the example sketched more than half the height of the wall surface.
  • the relief structure is interrupted by a recess AA for a spacer.
  • the two substructures each have the length RL, wherein the total longitudinal extent of the relief structure with 2RL is preferably greater than half the longitudinal extent NL of the mold cavity.
  • a pressure plate DP z. B. loaded with a load pressure device is placed after filling the mold cavity on this.
  • the relief structures consist of horizontal grooves NU, which, as can be seen more clearly from the enlarged detail in FIG. 4, are curved concavely away from the interior of the mold cavity.
  • the grooves have in the example sketched a uniform curvature with a radius of curvature, which is large against the relief depth RT of the relief structure.
  • a compacted molded block body produced in the mold cavity is positively connected to the relief structures with its side surfaces and thus kept in the mold cavity even after removal of the supporting vibrating table, wherein the holding forces absorbing the weight force are applied to holding surfaces HF which pass through the respective lower regions of the individual grooves are formed with down to the mold cavity extending surface tangents, whereas partial surfaces of the relief structure with vertical or with downwardly directed away from the mold cavity surface tangent not contribute to the holding forces.
  • the entire holding force which becomes effective for a shaped body in a mold cavity is composed of the sum of the partial forces applied to all these holding surfaces HF. Due to the long extent in the horizontal direction and the multiple succession in the vertical direction of the grooves of the relief structures results even at low relief depth RT a weight of the molding body compensating holding force.
  • the holding force applied by the holding surfaces HF is limited by the fact that the molded body is still elastically deformable even after compression and along the holding surfaces HF under lateral compression down can be moved.
  • the relief structures are dimensioned so that only the weight of the molded body is not sufficient to deform the molded body so far that the protruding in the relief structures projections of the molded body overcome the relief along the support surfaces down.
  • the relief structures are dimensioned so that a deformation of the shaped body is possible by using a force higher than its own weight in at least the extent without shearing the engaging into the relief structures protrusions of the molded body, that these projections overcome the relief structures down and the molding can be expressed in the mold cavity.
  • the relief depth RT is advantageously at most 1.5 mm, preferably at most 0.8 mm, in particular at most 0.5 mm.
  • the minimum depth RT of the relief structures is advantageously 0.1 mm, preferably 0.2 mm, in particular 0.3 mm. In the example outlined, a uniform relief depth is assumed for all grooves, which is preferred but not mandatory.
  • the mold cavity has a prismatic profile in an upper region with unstructured vertical wall surfaces and a cross-section which remains constant in the vertical direction.
  • the relief structure RS in the wall surface NWR is set back against the vertical extension of this prismatic section AP, whereby the corresponding prismatic upper section of the shaped body does not undergo any deformation through the relief when it is molded downward.
  • the relief structure RSX against the vertical extension of the prism surfaces of the section AP to be raised to the interior of the mold cavity.
  • the printing plate which typically has a gap of approximately 0.5 mm to the wall of the mold cavity, can be moved past the relief structure if necessary for molding.
  • the depth of the recesses AA for the formation of spacer elements on the side walls of the molding is typically substantially greater than the relief depth RT. These recesses are open at the bottom, so that the spacing element AH formed on the shaped body undergoes no compressive deformation when the shaped body is shaped out of the mold cavity.
  • the relief structures recognizable in FIG. 1 only on one longitudinal and one transverse surface of the mold cavity are advantageously formed at least on two opposite wall surfaces or preferably on all wall surfaces.
  • the holding forces can thereby occur uniformly on the one hand and be distributed on the other to a plurality of holding surfaces with low relief depth.
  • the invention is not limited to the described embodiments.
  • a variety of possibilities from combinations of the described shapes or other, non-linear substructures are possible for the shape of the relief structure.
  • the substructures can also be smaller and / or more spatially separated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Sewage (AREA)

Claims (12)

  1. Garniture de moule (FE) dotée d'un ou de plusieurs logements de moule (FN), destinée à être utilisée dans des machines de moulage pour la fabrication de blocs moulés en béton qui ont la forme de corps moulés compactés (FS) et leur dépôt en plusieurs couches, l'installation comprenant des dispositifs de poussée qui permettent d'extraire les corps moulés compactés par le bas hors de la garniture de moule et des moyens de retenue étant prévus sur les parois du logement de moule pour garantir le maintien du corps moulé compacté dans le logement de moule avant son extraction, caractérisée en ce que les parois du logement de moule présentent comme moyens de retenue des structures en relief qui présentent des creux dotés de flancs de retenue (HF) en pente vers le bas en direction du milieu du logement de moule, le relief (RS) étant accordé au volume du logement de moule et au matériau du corps moulé de telle sorte que d'une part le poids propre du corps moulé ne suffise pas pour le démouler du logement de moule et que d'autre part le corps moulé puisse être démoulé du logement de moule sous l'action des dispositifs de poussée sans arracher les saillies (GR) prévues sur les surfaces latérales du corps moulé et s'enfonçant dans les creux du relief.
  2. Garniture de moule selon la revendication 1, caractérisée en ce que la profondeur (RT) des reliefs des structures en relief (RS) est inférieure à 1,5 mm et de préférence inférieure à 0,8 mm.
  3. Garniture de moule selon la revendication 1 ou 2, caractérisée en ce que les flancs de retenue (HF) s'étendent en forme de bandes au moins essentiellement horizontales.
  4. Garniture de moule selon l'une quelconque des revendications 1 à 3, caractérisée en ce que plusieurs flancs de retenue successifs sont disposés dans la direction verticale.
  5. Garniture de moule selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la longueur cumulée des flancs de retenue (HF) est supérieure au périmètre d'un corps moulé (FS) fabriqué dans le logement de moule (FN) et est de préférence supérieure au double du périmètre du corps moulé.
  6. Garniture de moule selon l'une quelconque des revendications 1 à 5, caractérisée en ce que des flancs de retenue sont formés sur la surface d'au moins deux parois du logement de moule opposées l'une à l'autre par rapport au centre de masse du corps moulé.
  7. Garniture de moule selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la structure en relief contient des rainures (NU, NX) dont la surface transversale présente une courbure concave et/ou une courbure convexe.
  8. Garniture de moule selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la paroi du logement de moule présente une partie prismatique et en ce que le relief (RS) est en retrait par rapport à la partie prismatique de la paroi.
  9. Garniture de moule selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le relief est formé principalement dans la moitié inférieure de l'extension verticale des parois du logement de moule.
  10. Garniture de moule selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la section transversale intérieure du logement de moule s'évase vers le bas dans le sens vertical de la structure en relief.
  11. Garniture de moule selon l'une quelconque des revendications 1 à 10, caractérisée en ce que des creux supplémentaires (AA) pour des éléments d'écartement (AH) à former sur le corps moulé, qui présentent une profondeur plus grande que celle de la structure en relief et qui sont ouverts vers le bas, sont ménagés dans les parois du logement de moule.
  12. Garniture de moule selon l'une quelconque des revendications 1 à 11, caractérisée en ce que la surface des parois (NWL, NWQ) des logements de moule est durcie.
EP03793777A 2002-09-06 2003-08-30 Partie rapportee pour machines a mouler Expired - Lifetime EP1536933B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10241238A DE10241238B4 (de) 2002-09-06 2002-09-06 Formeinsatz für Formmaschinen
DE10241238 2002-09-06
PCT/EP2003/009652 WO2004022294A2 (fr) 2002-09-06 2003-08-30 Partie rapportee pour machines a mouler

Publications (2)

Publication Number Publication Date
EP1536933A2 EP1536933A2 (fr) 2005-06-08
EP1536933B1 true EP1536933B1 (fr) 2007-08-22

Family

ID=31969039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793777A Expired - Lifetime EP1536933B1 (fr) 2002-09-06 2003-08-30 Partie rapportee pour machines a mouler

Country Status (10)

Country Link
US (1) US7172404B2 (fr)
EP (1) EP1536933B1 (fr)
CN (1) CN100475473C (fr)
AT (1) ATE370825T1 (fr)
AU (1) AU2003266334A1 (fr)
DE (2) DE10241238B4 (fr)
DK (1) DK1536933T3 (fr)
ES (1) ES2289352T3 (fr)
PT (1) PT1536933E (fr)
WO (1) WO2004022294A2 (fr)

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DE10254322A1 (de) * 2002-11-21 2004-06-03 Kobra Formen Gmbh Anordnung zur Herstellung von Betonformsteinen
DE20219768U1 (de) * 2002-12-20 2003-03-06 KOBRA Formen GmbH, 08485 Lengenfeld Vorrichtung zur Herstellung von Betonformsteinen
DE102005054616B3 (de) * 2005-11-16 2006-11-09 Hydro Aluminium Mandl&Berger Gmbh Dauergießform und Gießformeinsatz
US20070262229A1 (en) * 2006-05-09 2007-11-15 Columbia Machine, Inc. Concrete mold box assembly with polyurethane bonded compartments
US20100044919A1 (en) * 2008-08-20 2010-02-25 Horacio Correia Molding apparatus with deformable mold
WO2010088365A2 (fr) * 2009-01-29 2010-08-05 Radva Corporation Machine à mouler à double plateau
US20120001360A1 (en) * 2010-07-01 2012-01-05 County Materials Corporation Concrete block mold with diamond insert
CN102310470A (zh) * 2010-07-06 2012-01-11 湖南华廷筑邦建材有限公司 空心盒的成型模
CN102310469A (zh) * 2010-07-06 2012-01-11 湖南华廷筑邦建材有限公司 空心盒的成型模
CN102310471A (zh) * 2010-07-06 2012-01-11 湖南华廷筑邦建材有限公司 空心盒的成型模
US9259853B2 (en) 2011-02-02 2016-02-16 Anchor Wall Systems, Inc. Molds for producing concrete blocks with roughened surfaces; blocks made therefrom; and methods of use
CN103252832B (zh) * 2013-05-20 2015-03-04 中国地质大学（武汉） 一种高度和截面积可调的圆形微型抗滑桩模具
WO2015048403A1 (fr) 2013-09-26 2015-04-02 Keystone Retaining Wall Systems Llc Bloc, système de bloc et procédé de fabrication de bloc
CN103821155B (zh) * 2014-03-07 2015-07-01 深圳市万信达生态环境股份有限公司 用于裸露坡面生态修复的植生砌块预制及使用方法
CN110948651B (zh) * 2019-12-24 2021-03-16 宝冶永联(江苏)建筑科技有限公司 一种可快速完整脱离预制构件的混凝土制品模具
WO2023031677A1 (fr) * 2021-09-05 2023-03-09 Kavianirad Younes Ensemble moule pour produire des entretoises en béton

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Also Published As

Publication number Publication date
DK1536933T3 (da) 2007-10-22
CN100475473C (zh) 2009-04-08
DE10241238B4 (de) 2007-09-27
EP1536933A2 (fr) 2005-06-08
ATE370825T1 (de) 2007-09-15
WO2004022294A2 (fr) 2004-03-18
US7172404B2 (en) 2007-02-06
PT1536933E (pt) 2007-10-08
WO2004022294A3 (fr) 2005-03-17
DE10241238A1 (de) 2004-04-08
AU2003266334A8 (en) 2004-03-29
CN1678437A (zh) 2005-10-05
US20050238751A1 (en) 2005-10-27
ES2289352T3 (es) 2008-02-01
AU2003266334A1 (en) 2004-03-29
DE50308018D1 (de) 2007-10-04

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