WO1994003313A1 - Moule pour fabriquer des pieces moulees par compression qui contiennent un liquide - Google Patents

Moule pour fabriquer des pieces moulees par compression qui contiennent un liquide Download PDF

Info

Publication number
WO1994003313A1
WO1994003313A1 PCT/EP1993/002048 EP9302048W WO9403313A1 WO 1994003313 A1 WO1994003313 A1 WO 1994003313A1 EP 9302048 W EP9302048 W EP 9302048W WO 9403313 A1 WO9403313 A1 WO 9403313A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
ceramic material
sintered
pored
foamed ceramic
Prior art date
Application number
PCT/EP1993/002048
Other languages
German (de)
English (en)
Inventor
Willi Roth
Original Assignee
Willi Roth
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 Willi Roth filed Critical Willi Roth
Priority to EP93917716A priority Critical patent/EP0607402B1/fr
Priority to AU47056/93A priority patent/AU666968B2/en
Priority to KR1019950701761A priority patent/KR100297331B1/ko
Publication of WO1994003313A1 publication Critical patent/WO1994003313A1/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
    • B28B7/368—Absorbent linings

Definitions

  • the invention relates to a mold for producing pressed parts containing liquid, such as clay roof tiles, a clay-containing or similar material.
  • Roof tiles in the form of pressed roof tiles are usually made of clay, clay or similar material with a very specific water content; the clay or the clay-containing material is applied to a negative mold made of gypsum, which is accommodated in a steel frame and serves as the lower mold, and is finally applied to a raw brick in a press by means of a negative mold made of gypsum which also serves as the upper mold pressed into the desired shape.
  • the upper side of the plaster mold serving as the lower mold is simulated on the surface of the underside of the bricks to be produced, while the downward-facing upper surface of the negative mold made of plaster serving as the upper mold corresponds to the visible outer surface of a brick.
  • the liquid contained in the material to be pressed is absorbed by the plaster of the lower mold and released on its underside.
  • the negative molds made of gypsum used as the upper and lower mold undergo considerable abrasion, so that after an approximately known, not too high number of pressings, the wear, in particular on the negative mold made of gypsum, which serves as the upper mold, is caused by the abrasion is so great that the specified tolerances, in particular with regard to the permissible minimum thickness of the finished brick, can no longer be maintained.
  • the plaster mold serving as the upper mold must therefore be At most, 1000 brick pressings can be exchanged for a new, provided upper mold.
  • the press must be exchanged for a new, unused gypsum mold every half to at least one hour, this process on average 5 to max. Takes 10min. Replacing the plaster mold serving as the upper mold takes 1 to 1.5 hours in a ten-hour shift, so that the brick press stops 10 to 15 times per shift.
  • the object of the invention is therefore to create a mold for producing pressed parts containing liquid, such as clay roof tiles, a clay-containing or similar material, which has a very high wear resistance and durability. According to the invention, this is achieved in a mold for the production of liquid-containing pressed parts, such as clay roof tiles, a clay-containing or similar material, by the features in the characterizing part of claim 1 or 17.
  • Advantageous further developments are the subject of subclaims directly or indirectly related to claim 1 or 17.
  • a layer which comes into contact with the material to be pressed consists of fine-pored, sintered or foamed ceramic material, while the layer below is coarse-pored, sintered or foamed ceramic material or foamed concrete.
  • the fine-pored, sintered or foamed ceramic material has a porosity of the order of 10 A (10.10 " m) to 30 ⁇ m and the proportion of porosity is between 5 depending on the material to be pressed to 60.
  • additives such as corundum, mullite, silicon carbide, silicon nitride, zirconium dioxide, etc. are added to the fine-pored, sintered or foamed ceramic material.
  • the fine-pored, sintered or foamed ceramic material consists of corundum, mullite, silicon carbide, silicon nitride or zirconium dioxide. Since zirconium dioxide is electrically conductive, if zirconium dioxide is added to the fine-pored, sintered or foamed ceramic material, demolding can be carried out more easily, or the adhesion between the mold and the pressed material is considerably reduced by the application of direct current.
  • the same effect can also be achieved in that the surface of the layer of fine-pored, sintered or foamed material has a metallized or an oxidation layer.
  • metal particles can be embedded in the fine-pored, sintered or foamed ceramic material to increase the conductivity.
  • the layer of foamed ceramic material preferably has a thickness of the order of 0.1 to 2.0 mm.
  • a Stainless steel mesh can be introduced.
  • such a fabric made of stainless steel is accommodated in an area corresponding to the sealing labyrinth of the finished brick in the form of strip-shaped or web-like projections running in the longitudinal direction of a brick, which protrude outwards from the layer of fine-pored ceramic material; this largely prevents the web-like or strip-like projections in the layer of fine-pored, sintered or foamed material from breaking off.
  • a mold according to the invention depends on the material used for the production of roof tiles can last from half a year to a year or more.
  • the daily downtimes of the press in the order of 1h to 1.5h, which were previously necessary for spraying out used plaster molds and for inserting new, provided plaster molds, are thus eliminated.
  • the personnel involved in the production, provision and injection of new gypsum molds are no longer required, and the entire cost of gypsum is also eliminated.
  • the layer consists of coarse-pored, sintered or foamed ceramic material, preferably of silicon carbide or corundum and, in order to enable backwashing with solvents or water, has a porosity which is around one Factors 3 to 20 are greater than the porosity of the layer made of fine-pored, sintered or foamed ceramic material.
  • the layer of the layer arranged below is preferably made in the region facing away from the layer of fine-pored, sintered or foamed ceramic material coarse-pored, sintered or foamed ceramic material or foamed concrete a number of tubular channels for draining the liquid in the form of water are formed.
  • cavities are formed in the layer of coarse-pore ceramic material or foamed concrete with supporting intermediate webs left between them.
  • the cavities in the layer of large-pore, sintered or foamed ceramic material preferably have a cross-sectional area of the order of 100 mm 2 , while the supporting intermediate webs have a thickness of * • *. up to 5mm.
  • a porous connecting layer can be provided between the layer of fine-pore, sintered or foamed ceramic material and the layer of coarse-pore, sintered or foamed ceramic material.
  • the mold according to the invention can advantageously also be used for slip casting or metal casting with and without vacuum application.
  • the layer that comes into contact with the material to be pressed is a metal plate that has a large number of fine holes are penetrated, a layer of large-pore, sintered or foamed ceramic material or foamed concrete is again provided under this plate.
  • the holes in the metal plate are flared to the underlying layer of coarse-pored, sintered or foamed ceramic material or foamed concrete, so that the water squeezed out of the clay faster into the underlying layer of foamed concrete or of coarse-pored, sintered or foamed ceramic material.
  • the holes which widen conically to form a layer of coarse-pored, sintered or foamed ceramic material or foamed concrete run approximately perpendicular to the surface of the metal plate. If necessary, the holes are arranged in a different distribution density and / or with different diameters in different areas according to a further advantageous development of the invention.
  • the conically widening holes are produced, for example, by means of laser or electron beam processes.
  • FIG. 1 schematically shows a part of a sectional view through a mold according to the invention in a greatly enlarged, non-scaled representation
  • FIG. 2 shows a likewise schematic, to scale, representation of a sectional view of another partial area of the embodiment according to FIG.
  • a top layer 10 in FIG. 1 consists of fine-pored, sintered or foamed ceramic material, while underneath another layer 11 of coarse-pored, sintered or foamed ceramic material or foamed concrete is provided.
  • tubular channels 110 are provided, via which the liquid is essentially derived in the form of water from the clay, clay-containing or similar material in the production of pressed roof tiles.
  • Layer 10 preferably has a thickness of 1.5 mm. Furthermore, both layers 10 and 11 are preferably colored continuously, so that the appearance of the color of the layer 11 underneath is an indication that the layer 10 made of fine-pored, sintered or foamed ceramic material has been used up.
  • protrusions 100 are shown in section on the outside (upwards in FIG. 2), which in a direction perpendicular to the plane of the drawing are strip-shaped or web-like projections running parallel to one another, which in the negative form correspond to the sealing labyrinth provided in the lateral area of each roof tile.
  • a steel fabric 20 made of preferably stainless steel is accommodated in the region of such projections 100 the sectional view of Fig.l and 2 can only be seen as points.
  • the steel mesh 20 is expediently also provided in the entire layer of fine-pored, sintered or foamed ceramic material.
  • cavities 111 are formed in the layer 11 from coarse-pored, sintered or foamed ceramic material or from foamed concrete, between which supporting webs 112 have been left standing.
  • the cavities 111 have a cross-sectional area on the order of 100 mm 2 , while the supporting intermediate webs 112 have a thickness on the order of preferably 4 to 5 mm.
  • the provision of the cavities 111 in the layer 11 achieves considerable material savings and, at the same time, the liquid emerging from the layer 10 generally only has to penetrate a considerably thinner layer above the individual cavities in the form of water.
  • the liquid that has escaped into the cavities can be drained from them, for example through the corresponding channels 110 in FIG. 1, or, as was previously the case in brick manufacture, can be sucked off by means of a vacuum.
  • FIG. 3 shows a modification of a mold 1 'according to the invention.
  • a steel plate 30, which is penetrated by a large number of holes 300 is arranged above the layer 11 made of coarse-pored, sintered or foamed ceramic material or made of foamed concrete.
  • the holes 300 shown in section are flared to the layer 11 provided there, made of foamed concrete or of coarse-pored, sintered or foamed ceramic material.
  • the respective center axes are indicated by dash-dotted lines in the individual holes 300.
  • the conical holes 300 have a diameter lO ⁇ m to - * 400 ⁇ m.

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)
  • Moulds, Cores, Or Mandrels (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne un moule pour fabriquer des pièces moulées par compression qui contiennent un liquide, comme des tuiles en terre glaise ou dans un autre matériau analogue. Ce moule comporte deux couches. La couche qui vient en contact avec le matériau à comprimer est réalisée dans un matériau céramique microporeux, fritté ou moussé. L'autre couche qui se trouve en dessous est réalisée dans un matériau céramique macroporeux, fritté ou moussé ou est en béton moussé. L'utilisation de matériau céramique moussé aux pores de différentes grosseurs permet de réaliser un moule résistant à l'usure, dont la durée de vie est plusieurs fois supérieure à celle des moules en plâtre utilisés jusqu'à maintenant dans la fabrication de tuiles moulées par compression.
PCT/EP1993/002048 1992-07-31 1993-07-30 Moule pour fabriquer des pieces moulees par compression qui contiennent un liquide WO1994003313A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP93917716A EP0607402B1 (fr) 1992-07-31 1993-07-30 Moule pour fabriquer des pieces moulees par compression qui contiennent un liquide
AU47056/93A AU666968B2 (en) 1992-07-31 1993-07-30 Mould for the production of mouldings containing liquid
KR1019950701761A KR100297331B1 (ko) 1992-11-06 1993-10-25 2-퍼할로게노알킬-치환된벤즈이미다졸,그의제조방법및농약으로서의그의용도

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4225412.4 1992-07-31
DE4225412A DE4225412C1 (fr) 1992-07-31 1992-07-31

Publications (1)

Publication Number Publication Date
WO1994003313A1 true WO1994003313A1 (fr) 1994-02-17

Family

ID=6464613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/002048 WO1994003313A1 (fr) 1992-07-31 1993-07-30 Moule pour fabriquer des pieces moulees par compression qui contiennent un liquide

Country Status (9)

Country Link
EP (1) EP0607402B1 (fr)
CN (1) CN1088150A (fr)
AT (1) ATE160105T1 (fr)
AU (1) AU666968B2 (fr)
CA (1) CA2120157A1 (fr)
DE (1) DE4225412C1 (fr)
TR (1) TR28181A (fr)
WO (1) WO1994003313A1 (fr)
ZA (1) ZA935514B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2532633A1 (fr) 2011-06-07 2012-12-12 Redco S.A. Moule de pressage humide pour tuile en argile et procédé de fabrication d'un moule pour la fabrication de tuiles en argile par pressage humide
CN111361002A (zh) * 2020-03-10 2020-07-03 广西矿建集团有限公司 一种整体预制钢筋砼楼板的长方形钢模架及其构筑方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE177987T1 (de) * 1994-11-02 1999-04-15 Portec Ag Vorrichtung zur fluid-leitung zwischen einem durch eine feste oberfläche begrenzten raum und einem kanal, sowie verfahren zur herstellung der vorrichtung
EP1227920B1 (fr) * 1999-10-28 2007-02-07 Attenberger Keramik Procede de fabrication de briques ou de carreaux de sol en terre cuite
ITRE20010022A1 (it) * 2001-03-09 2002-09-09 Sacmi Elemento di stampo per la formatura d'oggetti mediante colatura ad impasto umido d'argilla e simili e metodo per la sua fabbricazione
DE102004056975B3 (de) * 2004-11-25 2006-07-06 Dorst Technologies Gmbh & Co. Kg Druckgussform und Verfahren zum Herstellen einer Druckgussform
DE102005007909A1 (de) * 2005-02-08 2006-08-10 Rennebeck, Klaus, Dr. Vorrichtung zur Herstellung von Formteilen aus Keramik
DE102007045806A1 (de) 2007-09-25 2009-04-02 Dorst Technologies Gmbh & Co. Kg Gießformkomponente und Verfahren zum Herstellen einer Gießformkomponente
DE102008008968A1 (de) 2008-02-13 2009-08-20 Schlickenrieder, Klaus, Dr. Ing. Form zum Herstellen von flüssigkeitshaltigen Teilen
DE102009007670A1 (de) 2009-02-05 2010-08-12 Dorst Technologies Gmbh & Co. Kg Gießformkomponente, Gießform und Verwendung einer solchen Gießform

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191406751A (en) * 1914-03-17 1915-03-17 Samuel Davidson Improvements in and relating to the Manufacture of Artificial Stone, Tiles and the like Moulded Ceramic and similar Products.
FR538169A (fr) * 1920-08-18 1922-06-06 Arthur Muller Bauten Und Indus Procédé et appareil pour l'exécution de plaques de moule pour la fabrication de tuiles en ciment dans des machines à plaques de frappe
GB283894A (en) * 1927-01-19 1929-07-16 William Joseph Miller Improvements in moulds for use in pottery manufacture
US1993047A (en) * 1933-02-14 1935-03-05 Ontario Research Foundation Process for the manufacture of ceramic ware
US2026940A (en) * 1934-12-13 1936-01-07 Harbison Walker Refractories Shaping refractory articles
FR52514E (fr) * 1942-07-24 1945-04-17 Procédé de traitement et de séchage de la tourbe
DE910154C (de) * 1951-01-10 1954-04-29 Gottfried Cremer Dr Pressform
US2800072A (en) * 1954-04-28 1957-07-23 American Viscose Corp Cylindrical press assembly
US2809898A (en) * 1954-02-16 1957-10-15 Gen Electric Porous ceramic mold and method of making same
US2984887A (en) * 1958-01-30 1961-05-23 Gen Electric Apparatus for manufacturing ceramics
DE2104080A1 (en) * 1971-01-29 1972-08-03 Metallgesellschaft Ag, 6000 Frankfurt Porous absorptive shapes contg silicon nitride - for refractory ceramic use
FR2196602A5 (en) * 1972-08-18 1974-03-15 Bonnetot Henri Pneumatically stripped moulds - with porous metallic lining giving long mould life
EP0121929A2 (fr) * 1983-04-09 1984-10-17 Sinto Kogio, Ltd. Moule perméable
JPS6096585A (ja) * 1983-10-28 1985-05-30 バブコツク日立株式会社 多層構造セラミツクス部材とその製造方法
JPS61220809A (ja) * 1985-03-27 1986-10-01 Munekata Kk 金型
JPS6321105A (ja) * 1986-07-15 1988-01-28 トヨタ自動車株式会社 ２層構造のセラミツクス成形用多孔質成形型の製造方法
FR2601895A1 (fr) * 1986-07-26 1988-01-29 Toto Ltd Moule poreux pour coulee en barbotine et son procede de fabrication
WO1988000933A1 (fr) * 1986-08-07 1988-02-11 Ceramiques Techniques Desmarquest Procede de fabrication de moules en nitrure de silicium poreux pour coulee sous pression
FR2602708A1 (fr) * 1986-08-05 1988-02-19 Elmetherm Sa Procede de fabrication de moules destines a la realisation de pieces en matiere ceramique
JPH03290202A (ja) * 1990-04-06 1991-12-19 Kawasaki Steel Corp 湿式成形用型
EP0505296A1 (fr) * 1991-03-21 1992-09-23 L'industrielle Regionale Du Batiment Procédé de réalisation d'articles obtenus à partir d'un matériau moulable sous forme de pâte humide, et moule de pressage pour la mise en oeuvre de ce procédé

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191406751A (en) * 1914-03-17 1915-03-17 Samuel Davidson Improvements in and relating to the Manufacture of Artificial Stone, Tiles and the like Moulded Ceramic and similar Products.
FR538169A (fr) * 1920-08-18 1922-06-06 Arthur Muller Bauten Und Indus Procédé et appareil pour l'exécution de plaques de moule pour la fabrication de tuiles en ciment dans des machines à plaques de frappe
GB283894A (en) * 1927-01-19 1929-07-16 William Joseph Miller Improvements in moulds for use in pottery manufacture
US1993047A (en) * 1933-02-14 1935-03-05 Ontario Research Foundation Process for the manufacture of ceramic ware
US2026940A (en) * 1934-12-13 1936-01-07 Harbison Walker Refractories Shaping refractory articles
FR52514E (fr) * 1942-07-24 1945-04-17 Procédé de traitement et de séchage de la tourbe
DE910154C (de) * 1951-01-10 1954-04-29 Gottfried Cremer Dr Pressform
US2809898A (en) * 1954-02-16 1957-10-15 Gen Electric Porous ceramic mold and method of making same
US2800072A (en) * 1954-04-28 1957-07-23 American Viscose Corp Cylindrical press assembly
US2984887A (en) * 1958-01-30 1961-05-23 Gen Electric Apparatus for manufacturing ceramics
DE2104080A1 (en) * 1971-01-29 1972-08-03 Metallgesellschaft Ag, 6000 Frankfurt Porous absorptive shapes contg silicon nitride - for refractory ceramic use
FR2196602A5 (en) * 1972-08-18 1974-03-15 Bonnetot Henri Pneumatically stripped moulds - with porous metallic lining giving long mould life
EP0121929A2 (fr) * 1983-04-09 1984-10-17 Sinto Kogio, Ltd. Moule perméable
JPS6096585A (ja) * 1983-10-28 1985-05-30 バブコツク日立株式会社 多層構造セラミツクス部材とその製造方法
JPS61220809A (ja) * 1985-03-27 1986-10-01 Munekata Kk 金型
JPS6321105A (ja) * 1986-07-15 1988-01-28 トヨタ自動車株式会社 ２層構造のセラミツクス成形用多孔質成形型の製造方法
FR2601895A1 (fr) * 1986-07-26 1988-01-29 Toto Ltd Moule poreux pour coulee en barbotine et son procede de fabrication
FR2602708A1 (fr) * 1986-08-05 1988-02-19 Elmetherm Sa Procede de fabrication de moules destines a la realisation de pieces en matiere ceramique
WO1988000933A1 (fr) * 1986-08-07 1988-02-11 Ceramiques Techniques Desmarquest Procede de fabrication de moules en nitrure de silicium poreux pour coulee sous pression
JPH03290202A (ja) * 1990-04-06 1991-12-19 Kawasaki Steel Corp 湿式成形用型
EP0505296A1 (fr) * 1991-03-21 1992-09-23 L'industrielle Regionale Du Batiment Procédé de réalisation d'articles obtenus à partir d'un matériau moulable sous forme de pâte humide, et moule de pressage pour la mise en oeuvre de ce procédé

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8528, Derwent World Patents Index; AN 85-167848 *
DATABASE WPI Week 8810, Derwent World Patents Index; AN 88-067434 *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 064 (M - 565) 26 February 1987 (1987-02-26) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 127 (M - 1227) 31 March 1992 (1992-03-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2532633A1 (fr) 2011-06-07 2012-12-12 Redco S.A. Moule de pressage humide pour tuile en argile et procédé de fabrication d'un moule pour la fabrication de tuiles en argile par pressage humide
CN111361002A (zh) * 2020-03-10 2020-07-03 广西矿建集团有限公司 一种整体预制钢筋砼楼板的长方形钢模架及其构筑方法

Also Published As

Publication number Publication date
ATE160105T1 (de) 1997-11-15
AU666968B2 (en) 1996-02-29
EP0607402A1 (fr) 1994-07-27
CA2120157A1 (fr) 1994-02-17
EP0607402B1 (fr) 1997-11-12
AU4705693A (en) 1994-03-03
TR28181A (tr) 1996-02-06
DE4225412C1 (fr) 1993-04-29
ZA935514B (en) 1994-09-20
CN1088150A (zh) 1994-06-22

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