WO2006097119A1 - Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine - Google Patents

Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine Download PDF

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Publication number
WO2006097119A1
WO2006097119A1 PCT/EP2005/002711 EP2005002711W WO2006097119A1 WO 2006097119 A1 WO2006097119 A1 WO 2006097119A1 EP 2005002711 W EP2005002711 W EP 2005002711W WO 2006097119 A1 WO2006097119 A1 WO 2006097119A1
Authority
WO
WIPO (PCT)
Prior art keywords
filling
tool
mold
segments
molding compound
Prior art date
Application number
PCT/EP2005/002711
Other languages
German (de)
English (en)
Inventor
Klaus Müller
Ralph Lutz
Petra Trierweiler
Alfred Kaiser
Günther GRIMM
Robert Kremer
Original Assignee
Laeis 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 Laeis Gmbh filed Critical Laeis Gmbh
Priority to JP2008501163A priority Critical patent/JP2008532810A/ja
Priority to EP05716051A priority patent/EP1858680A1/fr
Priority to PCT/EP2005/002711 priority patent/WO2006097119A1/fr
Publication of WO2006097119A1 publication Critical patent/WO2006097119A1/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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/0225—Feeding specific quantities of material at specific locations in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds

Definitions

  • the invention relates to a method for producing a predetermined thickness profile having moldings or compacts in which a filling tool of a filling device filled with a molding compound and the molding compound is discharged in the direction of gravity from the filling tool in a mold of a press, wherein at least two in a perpendicular to Direction of gravity extending direction juxtaposed segments of the mold are charged according to the predetermined thickness profile with different Preßmassenmengen, and a press for performing such methods.
  • Moldings or compacts which have a complex geometry make special demands on the pressing technology used for the production of such products. This applies in particular to those products which, based on the pressing surface, have strong and, above all, unsteady transitions between different thicknesses, ie abrupt changes in the compact height in a sectional plane running parallel to the pressing surface.
  • the typical Central European roof tiles can be mentioned. With a total surface area of approx. 400 x 300 mm 2, these roof tiles have a typical body thickness of 12 mm. However, they are equipped with a large number of lugs, longitudinal and / or transverse folds, in the region of which the thickness of the shaped body is more than twice as large.
  • the size of the surface units on which different Preßmassenmengen must be provided depends strongly on the size and geometry of the molding itself and on the properties of the molding compound. Of particular importance in this context is the ability of the molding compound to allow, to some extent by plastic flow under pressure, mass displacements transverse to the direction of compression.
  • the size of the surface units or reference surface elements to be considered is on the order of about 10 cm 2 to about 100 cm 2 .
  • a volumetric mold filling In press molding with a uniaxially operating press for the production of moldings, regardless of whether the press is designed for one-sided or two-sided pressing, usually a volumetric mold filling is used. In this case, the cavity or mold is filled by the mold is run over with a filling tool in which, based on the total mass required for the respective pressing, there is an excess of molding compound. By lowering the lower punch or lifting the mold laterally limiting the mold frame of the press to an adjustable filling position, the volume is defined, which is filled by the transferred from the filling material.
  • the transfer can be effected both by dropping into the already opened cavity or mold, and by "sucking" filling, in which the cavity or mold is opened only when the filling tool is positioned above the mold the filling tool so stripped that the upper boundary surface of the received in the mold molding compound is aligned with the mold frame and a smooth Preßmassenober Designs arises.
  • Presses with sub-stampings subdivided into a plurality of segments are usually used in the production of large-sized, high-quality compacts, for example for the production of refractory slide plates for steel production.
  • active form elements because of the necessary "active" form elements, the mold becomes very expensive and expensive, and overuse and, in some cases, damage to the press is often observed in the production of moldings having a complex thickness profile. active "mold elements or a conventional press is used.
  • the object of the invention is to provide a method for producing molded articles with a predetermined die profile, which can be carried out with structurally simple presses while avoiding damage to the press and ensuring given product properties, and to provide corresponding presses.
  • this object is achieved by a development of the known method, which is characterized essentially in that the juxtaposed segments of the mold corresponding segments of the filling tool, according to the predetermined thickness profile, are filled with different Preßmassenmengen.
  • a high operational reliability can be achieved in the execution of inventive method, because neither an uneven, in particular unbalanced load on the mold, nor an excessive load movable segments of the lower punch of the mold is to get.
  • An asymmetrical loading of the mold can be prevented, because by appropriate filling of the filling tool and transfer of the pressing Mass from the filling tool in the mold already such a Preßmassenver whatsoever is ensured in the mold, that it does not come in the production of moldings with complex thickness profile to an uneven or unbalanced load on the mold.
  • use can be made of the use of movable segments of the lower punch of the die loaded with a high pressing pressure, which also contributes to the increase in operational reliability.
  • the filling of the individual segments of the filling tool with the predetermined thickness profile corresponding Preßmassenmengen similar to the known filling of the mold, carried out in that the filler has at least two movable about parallel to the direction of gravity and the corresponding segments of the filling associated ground segments and at least one ground segment moved to fill the filling tool parallel to the direction of gravity in a certain position depending on the predetermined thickness profile, in particular is raised.
  • the at least one ground segment can be moved into the filling tool in a filling station of the filling device arranged at a distance next to the pressing mold.
  • the juxtaposed segments of the filling tool are separated by preferably approximately vertical partitions from each other.
  • the filled with the molding compound filling tool can be moved particularly easily in the direction of the mold when the floor segments moved after filling the filling tool in a starting position, in particular lowered, arranged in their upper boundary surfaces in a plane are that the filling tool with the molding compound received therein is movable relative to the ground segments perpendicular to the direction of gravity in the direction of the mold. Also during this movement of the filling tool, a displacement of the molding material received in the individual filling tool segments can be prevented by means of partitions arranged between the individual segments. It has proved to be particularly useful in this context if the upper boundary surfaces of the floor segments in the starting position are aligned with the preferably arranged in a horizontal plane lower edge of the filling tool.
  • the filling device may have a filling template with at least one associated with at least one segment of the mold chamber whose volume corresponds to the predetermined by the thickness profile Preßmassenmenge for its associated Preßformsegment, wherein for filling the filling tool, the chamber of the filling completely with the Preßmasse is filled.
  • the filling template has a plurality of chambers, each of which is associated with a segment of the mold.
  • a filling template suitable for carrying out the method according to the invention can be made particularly simple if it is realized in the form of a plate-shaped element with at least one opening forming the at least one chamber.
  • the amount of pressing material to be received in this chamber is then determined by the product of the chamber surface in a plane perpendicular to the direction of gravity and the chamber height or plate thickness.
  • an adjustment of the filling level in the mold can be effected particularly easily with changes in Preßmasseneigenschaften when the Grescoone has a plurality of stacked plate-shaped elements, each of which is penetrated to form the at least one chamber of at least one recess.
  • the individual elements may also have different thicknesses. This results in a particularly high variability in the setting of a wanted total height by suitable combination of the individual elements of the filling template.
  • the filling template itself does not have to withstand any mechanical or wear stress and also on the manufacturing accuracy no comparable with the dimensional accuracy of a mold requirements are made. Therefore, a filling template which is suitable for carrying out the method according to the invention can be produced from very inexpensive and easily machinable material, eg. B. by simple water jet cutting.
  • the molding compound received in the at least one chamber of the filling template is first dispensed into a separate filling tool and first filled therefrom into the molding mold.
  • expediently filling tools are used, the individual, the Preßformsegmenten associated segments are separated by partitions. It can thereby be prevented that during the transfer of the molding compound from the filling template into the filling tool a deliquescence of the molding compound components intended for the individual segments of the filling tool occurs in adjacent elements.
  • the additional process step of transferring the molding compound from the Greschablone in the filling tool can be readily accepted in view of the otherwise achieved simplification, so that this particularly preferred in the invention process control is a solution in which economy and reliability in supplement special degree.
  • the molding compound, as well as in the use of filling tools, associated with individual segments ground segments from a filling container in the at least one chamber of the Greschablone be filled the filling level is set in the chamber advantageously so that the upper boundary surface of the molding compound accommodated therein is aligned with the upper edge of the chamber, which is preferably arranged in a horizontal plane.
  • a relative movement in the horizontal direction between the filling container and the filling template can be effected so that excess pressing material is withdrawn with the filling container from the upper edge of the filling template.
  • This filling of the filling tool with the received in the chambers of the Bischablone molding compound can be particularly easily effected when the filling template has a bottom plate which is withdrawn in the horizontal direction of the Bischablone so that the recorded in the chambers of the Bischablone molding compound freely down into the corresponding segments of the filling tool may fall.
  • the filling of the mold with the received in the filling mold molding compound can be particularly easily effected when the pressing tool has a bottom plate, which is withdrawn for filling the mold in the horizontal direction of the filling tool, so that the molding compound from the individual segments of the filling tool free can fall into corresponding segments of the mold.
  • a press for carrying out these methods is characterized by a press mold designed to receive molding compound and a filling device designed to fill the press mold and having a filling tool operable to dispense the molding compound in the direction of gravity in a direction perpendicular to the direction of gravity extending juxtaposed segments of the mold can be loaded according to a predetermined thickness profile of a molded body with different Preßmassenmengen, essentially characterized in that the filling device for filling of the juxtaposed segments of the mold corresponding segments of the filling according to the predetermined thickness profile is designed with different Preßmassenmengen in a arranged in the horizontal direction at a distance next to the mold filling station of the filling device.
  • the filling station may have at least one segment of the filling tool and for filling this segment with the predetermined Preßmassenmenge in a direction parallel to the direction of gravity extending movable in the filling soil segment, wherein expediently all ground segments of the filling station together in a direction parallel to the direction of gravity movable direction, in particular on a vertically movable base plate are mounted.
  • a simple level control is made possible for the case in which the Preßmasseneigenschaften and thus the compression factor between individual pressing cycles undergo a change.
  • Such a level control is normally performed automatically by the press control when a standard volumetric filling of the mold is done in the press. If, according to the method according to the invention, pre-metering is carried out outside the press in the filling tool and / or the filling template and only the pre-metered quantity is transferred to the pressing mold, such regulation within the press is in some cases no longer possible.
  • the juxtaposed segments of the filling tool of a press according to the invention are expediently separated from one another by partitions.
  • the filling of the filling tool with the molding compound can be effected particularly easily in a press according to the invention if the filling device has a filling container which is arranged in the filling station above the filling tool and preferably in the horizontal direction with respect to the filling tool.
  • the transfer of the molding compound from the filling container into the filling tool and / or from the filling tool into the mold can be effected particularly simply if the filling tool and / or the filling container has a floor segment which can be pulled off in the horizontal direction thereof.
  • the filling device of a press according to the invention has a filling template with at least one chamber associated with a segment of the mold, the volume of which corresponds to the molding compound quantity predetermined by the thickness profile for the molding segment associated therewith , wherein the filling template is conveniently located in the filling station above the filling tool when the filling template is not used simultaneously as a filling tool.
  • the filling device preferably has a filling container arranged in the filling station above the filling template and preferably in the horizontal direction with respect to the filling template, from which the at least one chamber of the filling template can be filled from above with the molding compound.
  • FIG. 1 is a plan view of a producible with a method according to the invention brick
  • FIG. 2a is a schematic representation of arranged in a filling station of the press shown in Fig. 2 ground segments,
  • FIG. 3 shows a schematic representation of a filling tool of a press according to the invention
  • Fig. 4 is a schematic representation of a filling template of a press according to the invention.
  • Fig. 5 is a schematic representation to illustrate the interaction of the filling tool shown in Fig. 3 with the filling template shown in Fig. 4.
  • a shaped body to be produced by means of the method according to the invention is subdivided into individual adjacent segments with predetermined areas, wherein a value determined by the profile of the shaped body and the areas of the pressed mass is determined for each of the segments.
  • the brick is divided into a total of 18 segments with areas A 1 to A 18 , each of which a Preßmassenmay G 1 to G 18 is assigned.
  • the press shown in Fig. 2 for the production of bricks shown in Fig. 1 comprises a lower punch 12, a filling tool 20, a generally designated 50 filling station and a total of 70 designated conveying arrangement for the molding compound.
  • a mold 14 is formed, which can be filled with the aid of the filling tool 20 provided with by the conveyor 70 molding compound.
  • the filling container 72 can be moved horizontally to and fro, as indicated by the double arrow 74.
  • the filling tool 20 is filled in the spaced next to the mold 14 filling station 50 with the provided by the conveyor assembly 70 molding compound. Subsequently, the filling tool 20 is moved over the press mold 14 and discharged in the filling tool 20 molding compound discharged in the direction of gravity in the mold 14.
  • the filling tool 20 has a plurality of segments 24 associated with the segments of the tile shown in FIG. 1, wherein two or more segments of the filling tool 20 may be associated with individual segments of the tile.
  • the individual segments 24 of the filling tool 20 are separated by vertical partitions 22 from each other.
  • the filling station 50 for each segment of the filling tool 20 a ground segment 62, wherein all ground segments 20 are fixed to a movable in the direction of gravity bottom plate 60.
  • the individual bottom segments 62 as can be seen particularly clearly in FIG. 2 a, can be moved in the direction of gravity with the aid of reciprocating arrangements 64 with respect to the base plate 60.
  • the bottom segments 62 are retracted by means of the reciprocating piston assemblies 64 into the filling tool 20, wherein the filling of the filling tool 20 with the required Preßmassenmenge required position of the bottom segments 62 by the mass required for the individual segments of the brick filling mass G 1 to G. 18 is determined.
  • the molding compound is filled with an excess of molding compound filled container (not shown) in the individual segments of the filling tool 20 and excess material stripped by horizontal movement of the filling container with respect.
  • the filling tool from the upper edge of the filling tool.
  • the stripped material will help with a conveyor belt 72 again fed to the conveyor assembly 70 and can be conveyed back to the filling station 50 for the production of subsequent moldings or bricks.
  • the bottom segments 62 are moved by means of Hubkolbenanssenen 64 back into the starting position shown in Fig. 2a, in which the upper boundary surfaces of the bottom segments 62 are arranged approximately in a plane below the filling tool 20. Then, the filling tool 20 can be moved without obstruction by the bottom segments 62 in the horizontal direction in the direction of the die 14, as indicated in Fig. 2 by the arrow P. Once the filling tool 20 is located just above the mold 14, the molding compound from the individual segments 24 of the filling tool 20 can be discharged into the mold 14. For this purpose, the pressing tool 20 can first be closed after filling in the filling station 50 with a bottom plate 26 (see Fig.
  • a filling template 80 for volumetrically correct filling of the individual segments 24 of the filling tool 20, a filling template 80 according to FIG. 4 can also be used while avoiding movable floor segments 62.
  • This filling template 80 has a multiplicity of chambers 84 formed by corresponding perforations of a plate-shaped element, each of which is assigned to at least one segment 24 of the filling tool 20.
  • the cross-sectional areas of the individual chambers 84 are selected such that the weight of the molding compound required for complete filling of the chambers 84 corresponds to the weight G 1 to G 1S of the segments of the tile assigned to the corresponding segments of the filling tool 20.
  • the chambers 84 of the filling template 80 are completely filled with the aid of a filling container (not shown). Excess material is stripped by a horizontal movement of the filling container with respect.
  • the filling template 80 from the upper edge of the filling template.
  • At- closing a bottom plate 86 of the filling template 80 is withdrawn in the horizontal direction of the filling template, as indicated in Fig. 5a by the arrow P 2 .
  • the molding compound received in the chambers 84 then falls under gravity into the segments 24 of the filling tool 20.
  • individual chambers 84 can be assigned to a plurality of segments 24 of the filling tool.
  • the selected geometries of the filling tool and / or the filling template still allow proper emptying into the mold or the segments of the filling tool. This can be assisted in the case of critical geometries by rounded edges or corners of the individual chambers of the filling template and / or of the filling tool, vibration devices or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

Procédé pour la fabrication de corps moulés possédant un profil d'épaisseur prédéterminé, en particulier avec une presse uniaxiale. Selon ledit procédé, un outil de remplissage d'un dispositif de remplissage est rempli d'une matière à mouler et ladite matière à mouler est acheminée dans le sens de gravité de l'outil de remplissage vers un moule de presse. Au moins deux segments du moule de presse placés côte à côte dans un sens perpendiculaire au sens de gravité, correspondant au profil d'épaisseur prédéterminé, sont pourvus de quantités différentes de matière à mouler. Des segments de l'outil de remplissage placés côte à côte et correspondant aux segments placés côté à côte du moule de presse sont remplis de quantités différentes de matière à mouler, en fonction du profil d'épaisseur prédéterminé.
PCT/EP2005/002711 2005-03-14 2005-03-14 Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine WO2006097119A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008501163A JP2008532810A (ja) 2005-03-14 2005-03-14 所定の断面厚さを有する成形体を製造するための方法およびプレス機
EP05716051A EP1858680A1 (fr) 2005-03-14 2005-03-14 Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine
PCT/EP2005/002711 WO2006097119A1 (fr) 2005-03-14 2005-03-14 Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/002711 WO2006097119A1 (fr) 2005-03-14 2005-03-14 Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine

Publications (1)

Publication Number Publication Date
WO2006097119A1 true WO2006097119A1 (fr) 2006-09-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/002711 WO2006097119A1 (fr) 2005-03-14 2005-03-14 Procede et presse pour la fabrication d'un corps moule possedant un profil d'epaisseur predetermine

Country Status (3)

Country Link
EP (1) EP1858680A1 (fr)
JP (1) JP2008532810A (fr)
WO (1) WO2006097119A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20159162A1 (it) * 2015-12-18 2017-06-18 Origostyle S R L Stampo per la pressatura di piastrelle con dispositivo di regolazione del caricamento di materiale nello stampo

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552090A (en) * 1945-05-04 1951-05-08 Stupakoff Ceramic & Mfg Compan Method and apparatus for molding ceramic articles
GB1579053A (en) * 1976-03-10 1980-11-12 Dolomitwerke Gmbh Manufacture of wedge-shaped composite blocks

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552090A (en) * 1945-05-04 1951-05-08 Stupakoff Ceramic & Mfg Compan Method and apparatus for molding ceramic articles
GB1579053A (en) * 1976-03-10 1980-11-12 Dolomitwerke Gmbh Manufacture of wedge-shaped composite blocks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20159162A1 (it) * 2015-12-18 2017-06-18 Origostyle S R L Stampo per la pressatura di piastrelle con dispositivo di regolazione del caricamento di materiale nello stampo

Also Published As

Publication number Publication date
JP2008532810A (ja) 2008-08-21
EP1858680A1 (fr) 2007-11-28

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