WO2001098068A1 - Moule a compression et son procede de production - Google Patents

Moule a compression et son procede de production Download PDF

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Publication number
WO2001098068A1
WO2001098068A1 PCT/EP2001/006838 EP0106838W WO0198068A1 WO 2001098068 A1 WO2001098068 A1 WO 2001098068A1 EP 0106838 W EP0106838 W EP 0106838W WO 0198068 A1 WO0198068 A1 WO 0198068A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
plastic
tool
carrier matrix
press
Prior art date
Application number
PCT/EP2001/006838
Other languages
German (de)
English (en)
Inventor
Peter Göricke
Original Assignee
Goericke Peter
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
Priority claimed from DE10030518A external-priority patent/DE10030518C1/de
Application filed by Goericke Peter filed Critical Goericke Peter
Priority to DE10192501T priority Critical patent/DE10192501D2/de
Priority to AU79665/01A priority patent/AU7966501A/en
Publication of WO2001098068A1 publication Critical patent/WO2001098068A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • 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
    • B28B3/024—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 the pressure on the material being transmitted through flexible or resilient wall parts, e.g. flexible cushions on the ramming surface, resilient wall parts pressing as a result of deformation caused by ram pressure
    • 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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form
    • B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts

Definitions

  • the invention relates to a pressing tool for producing ceramic products from kneadable materials, with a carrier tool part having a pressing side and a coating applied to the pressing side and having a pressing contour. Furthermore, the present invention relates to a method for producing a pressing tool for ceramic products from kneadable materials.
  • a press tool of the type mentioned and a method for producing such a press tool are already known from DD 245 395 AI.
  • the known pressing tool has a carrier tool part, on the pressing side of which a coating of polyurethane is applied in order to be able to better absorb the forces occurring during the pressing.
  • a plastic working mold for the industrial production of ceramic products from kneadable materials which consists of porous polyurethane, the working surface of which has a pore structure.
  • GB-PS 1 355 521 also shows a pressing tool of the type mentioned at the outset, a coating of polyurethane being applied to the carrier tool part. This coating is intended to prevent the pressed material from sticking after pressing.
  • a carrier tool part for example made of metal
  • the pressing or sticking of the pressing material can also be done with an applied polyurethane coating do not rule out entirely. This has the consequence that the pressing process must be interrupted frequently in order to clean the pressing tool on its pressing side or on the pressing contour.
  • Gypsum pressing tools have the advantage that the material to be pressed hardly adheres to the gypsum after pressing, since gypsum is capillary-porous and absorbs the water that occurs during pressing.
  • the use of gypsum as the material of the carrier tool part has the further advantage that the carrier tool part breaks when rigid foreign bodies are enclosed between the pressing tools without damaging the presses.
  • the disadvantages that arise in connection with the gypsum such as a short service life and covering of the pressed material with an undesired calcium sulfate layer after a short time, are frequently accepted. Due to the short service life, frequent replacement of the pressing tools is required, which is associated with correspondingly high costs. Another major disadvantage is the business interruptions that are required due to the replacement.
  • the object of the present invention is now to provide a pressing tool of the type mentioned at the outset and a method for producing a pressing tool, which on the one hand is intended to ensure a comparatively long service life of the pressing tool and on the other hand the tendency for the pressing material to adhere to the pressing tool the pressing is reduced.
  • the previously specified and derived object is essentially achieved in a pressing tool of the type mentioned at the outset in that the coating is formed as a composite material with an outer layer made of a non-polar and / or independently non-adhesive and / or non-permanently adhesive plastic and a three-dimensional carrier matrix in which the plastic is at least partially embedded on one side of the carrier matrix and the plastic is mechanically connected to the carrier matrix due to the embedding, and that the carrier matrix is firmly connected to the carrier tool part on the other side.
  • the press contour of the press tool is formed by a layer of a pourable, in the sense of spreadable plastic, which, as previously stated, non-polar and / or independently not adhesive and / or non-permanently sticky is, on the layer of plastic before curing the Plastic a three-dimensional support matrix or the layer is applied to the support matrix, so that the plastic is at least partially embedded in the support matrix on the other side of the support matrix and is mechanically connected to the plastic after curing due to the embedding.
  • the carrier matrix is first applied to the carrier tool part or is provided thereon, and then the plastic is at least partially embedded in the carrier matrix.
  • polyurethane is a polar plastic.
  • Polar plastics are either self-adhesive, but in any case they can be made permanently sticky with an adhesive. This has the advantage that this plastic can also be easily applied as a coating to a carrier tool part. This is not possible with a non-polar plastic such as silicone, polytetrafluoroethylene, polyethylene or polypropylene.
  • non-polarity of these plastics there is no connection with the material to be pressed and therefore no adhesion of the pressed products to the pressing tool.
  • non-polar plastics in connection with pressing tools has obviously not been considered so far, since a coating consisting of a non-polar plastic cannot be permanently connected to the carrier tool part.
  • the present invention is not limited to providing only the use of a non-polar plastic as a coating in connection with a pressing tool, since - as previously filled out - such a plastic cannot be permanently connected to the carrier tool part itself.
  • the invention proposes the use of a three-dimensional carrier matrix in which the plastic is at least partially embedded on one side of the carrier matrix and the plastic is mechanically connected to the carrier matrix due to the embedding. The other side of the carrier matrix can then in turn be firmly connected to the carrier tool part. Embedding the plastic in the carrier matrix ultimately results in a solid mechanical one Composite in the form of a positive connection, with significantly better separation properties and longer service life compared to the known pressing tools.
  • the use of the composite material from the plastic layer and the carrier matrix offers the possibility of influencing the properties of the coating .
  • the thickness of the carrier matrix and the plastic layer and the depth of the embedding different (strength) properties of the coating result.
  • the carrier matrix is preferably connected to the carrier tool part over the entire surface.
  • the plastic should also be applied to the entire surface of the carrier matrix in order to ensure good detachment of the material to be pressed from the pressing tool at every point of the pressing contour.
  • a rigid or a flexible material is used as the carrier matrix.
  • a fabric, a fiber material, a pore-shaped material and / or a loop-shaped material is preferably used as the carrier matrix.
  • the materials glass fiber, glass fabric, carbon, fiber fabric, kevlar fabric, tear-off fabric, textile fabric such as terry cloth or foam are particularly suitable.
  • the material of the carrier tool part is at least partially embedded in the carrier matrix, the carrier tool part being mechanical due to the embedding is connected to the carrier matrix.
  • gypsum for example, can easily be used as the material of the carrier tool part, which is poured onto the side of the carrier matrix opposite the plastic. After the plaster and plastic have hardened, a firm bond of all materials results.
  • gypsum as the material for the carrier tool part is still expedient for the present application, even if the capillarity of the gypsum is no longer used to absorb water from the pressed material, since the coating no longer permits water absorption. Nevertheless, the advantage of the plaster can be used that the carrier tool part breaks if there is hard, non-deformable material between the pressing tools. Damage to the presses can be avoided in this way.
  • a tool frame into which the carrier matrix and the carrier tool part are introduced, is appropriate.
  • a form-fitting mounting is recommended.
  • lateral openings can be provided in the tool frame, into which the material of the coating and / or the tool part flow and, after hardening, ensure a positive fit in the pressing direction.
  • the carrier tool part instead of using a pourable and hardening material for the carrier tool part, it is also possible to use a solid material for the carrier tool part. In this case, of course, the material of the carrier tool part cannot be embedded in the carrier matrix.
  • the use of an adhesive connection is then appropriate for the firm connection of the support matrix and the support tool part.
  • the carrier matrix can easily be glued to the pressing side of the carrier tool part, preferably over the entire surface, in order to be able to ensure the firm connection of the carrier matrix and thus the coating to the carrier tool part.
  • adhesives based on epoxy resins, polyurethane resins, unsaturated polyesters and / or polymetracylates are suitable as adhesives for the carrier matrix.
  • the layer thickness of the carrier matrix depends on the material, but should in each case be greater than 0.2 mm.
  • the penetration depth of the plastic and / or the adhesive should be greater than 0.1 mm, depending on the type and the layer thickness of the carrier matrix.
  • the following layer thicknesses and subsequent penetration depths are particularly preferred for the materials mentioned above:
  • any material that permits penetration of the plastic or the adhesive from both sides is to be regarded as suitable.
  • Different parameters can be specified through different penetration depths and different materials. Is z. For example, if a simple glass fiber fabric is used that does not have a firm bond in itself, it is possible, after the plastic has been applied, by a suitable process such as spraying, dipping, rolling or the like and applying an epoxy resin on the back after the two plastics have hardened to separate them again by simply tearing the fiberglass fabric. If a terry cloth or a stable foam is used instead of the glass fiber fabric, it is not easily possible to separate the two materials again.
  • Other parameters such as strength of the bond or penetration depth can also be influenced by certain material combinations. influence. Ultimately, the individual parameters must be coordinated for each application.
  • Fig. 1 is a schematic cross-sectional view of an inventive
  • FIG. 2 is a view corresponding to FIG. 1 of another embodiment of a press tool according to the invention.
  • FIG. 3 shows a view corresponding to FIG. 1 of a further embodiment of a press tool according to the invention.
  • each press tools 1 are shown, which are used to manufacture ceramic products from kneadable materials.
  • Each of the pressing tools 1 has a carrier tool part 2, on the pressing side 3 of which a coating 5 having the pressing contour 4 of the pressing tool 1 is applied.
  • the coating 5 is designed as a composite material and has at least two layers.
  • An outer layer 6, which has the press contour 4, is provided, which consists of a non-polar and / or non-self-adhesive and / or non-permanent plastic.
  • the plastic is preferably silicone, but other non-polar plastics such as fluoropolymers, polyethylene and / or polypropylene can also be used.
  • the coating 5 has a three-dimensional carrier matrix 7 in addition to the layer 6. It is essential in this context that the plastic of the layer 6 on one side 8 of the carrier matrix is at least partially embedded in it, so that a mechanical connection in the manner of a positive connection between the layer 6 and the carrier matrix 7 due to the inclusion bedding results. Furthermore, the carrier matrix 7 is firmly connected to the carrier tool part 2 on the other side 9.
  • the carrier matrix 7 is connected to the carrier tool part 2 over the entire surface, while the plastic embedded in the carrier matrix 7 is applied to the carrier matrix 7 over the entire surface.
  • a flexible fabric namely in particular a terry cloth
  • the carrier matrix 7 which is loop-shaped or loop-shaped on its two outer sides and is therefore particularly suitable for embedding on both sides.
  • the embodiment of the pressing tool 1 according to the invention shown in FIG. 1 is characterized in that the material of the carrier tool part 2 is embedded in the transition to the carrier matrix 7, so that there is a mechanical connection between the carrier tool part 2 and the carrier matrix 7 due to the embedding ,
  • the material of the carrier tool part 2 is plaster. It goes without saying that it is also possible in principle to use another pourable or flowable material which hardens after casting, for example a plastic.
  • this has an outer peripheral tool frame 10, into which the carrier tool part 2 and the coating 5 are introduced and positively held therein.
  • the carrier tool part 2 consists of a solid material, in the present case of metal.
  • the coating 5 composed of the layer 6 and the carrier matrix 7 is glued to the carrier tool part 2.
  • an adhesive layer 11 is provided between the side 9 and the pressing side 3 of the carrier tool part 2, with which the support matrix 7 is glued to the support tool part 2 over the entire surface.
  • an epoxy resin serves as the adhesive for the adhesive layer 11.
  • FIGS. 2 and 3 differ in that the carrier tool part 2 in the embodiment according to FIG. 2 has an essentially flat press side 5.
  • the press contour 4 in the layer 6 results exclusively from the shape of the layer 6.
  • the embodiment according to FIG. 2 is comparable to that according to FIG. 1.
  • the press contour 4 of the press tool 1 is at least essentially predetermined by the shape of the press side 3 of the carrier tool part 2.
  • the coating 5 has essentially the same thickness over its surface. It goes without saying that such an embodiment can also be implemented in an embodiment as shown in principle in FIG. 1.
  • the tool frame 10 is first placed on a negative mold 12.
  • the negative mold 12 has the negative press contour on its surface.
  • the layer 6 is then applied to the negative mold 12 in the tool frame 10.
  • the plastic is liquid in this state.
  • the carrier matrix 7 is placed on the layer 6, before the plastic hardens. If necessary, the carrier matrix 7 is pressed into the still liquid plastic, so that the previously described embedding of the carrier matrix 7 results, as shown in FIG. 6.
  • the space located above the carrier matrix 7 is poured out with plaster within the tool frame 10, so that there is also a positive fit between the plaster and the carrier matrix 7 by embedding the plaster in the carrier matrix 7.
  • the pressing tool 1 is finished.
  • the pressing tools shown in FIGS. 2 and 3 are manufactured in a different way. There are different ways of doing this.
  • the adhesive layer 11 is first applied to the pressing side 3 of the carrier tool part 2.
  • the carrier matrix 7 is then glued to the carrier tool part 2.
  • the layer 6 is then applied to the carrier matrix and the press contour 4 is produced. It is also possible for the carrier matrix to be glued to the carrier tool part 2 together with the plastic which already has the press contour.
  • the press contour 4 of the press tool 1 is already predetermined by the press side 3 of the carrier tool part.
  • the coating is applied either by first gluing on the carrier matrix and then applying the plastic, or by applying the prefabricated composite material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un moule à compression (1) destiné à la production de produits céramiques à partir de matières pétrissables. Ce moule comprend un élément support (2) présentant une face de compression (3) et un revêtement (5) appliqué sur la face de compression (3) et présentant un contour de compression (4). L'invention vise à procurer un moule à compression de type susmentionné qui, d'une part, a une longue durée de vie garantie et, d'autre part, réduit la tendance du produit comprimé à adhérer au moule après compression. Pour ce faire, le revêtement (5) est conçu sous forme de matériau composite et il comprend une couche externe (6) constituée d'un plastique non polaire et/ou spontanément non adhésif et/ou à rendre provisoirement collant, ainsi qu'une matrice tridimensionnelle (7) qui enrobe au moins partiellement le plastique sur une face (8) de la matrice support (7). Du fait de cet enrobage, le plastique est mécaniquement relié à la matrice support (7) et, sur l'autre face (9), la matrice support (7) est solidement reliée à l'élément support (2).
PCT/EP2001/006838 2000-06-21 2001-06-18 Moule a compression et son procede de production WO2001098068A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10192501T DE10192501D2 (de) 2000-06-21 2001-06-18 Presswerkzeug und Verfahren zur Herstellung eines Presswerkzeugs
AU79665/01A AU7966501A (en) 2000-06-21 2001-06-18 Compression mould and method for producing a compression mould

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10029435 2000-06-21
DE10029435.9 2000-06-21
DE10030518A DE10030518C1 (de) 2000-06-21 2000-06-28 Preßwerkzeug und Verfahren zur Herstellung eines Preßwerkzeugs
DE10030518.0 2000-06-28

Publications (1)

Publication Number Publication Date
WO2001098068A1 true WO2001098068A1 (fr) 2001-12-27

Family

ID=26006090

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006838 WO2001098068A1 (fr) 2000-06-21 2001-06-18 Moule a compression et son procede de production

Country Status (3)

Country Link
AU (1) AU7966501A (fr)
DE (1) DE10192501D2 (fr)
WO (1) WO2001098068A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI620653B (zh) * 2017-02-06 2018-04-11 財團法人塑膠工業技術發展中心 具補強結構的快速模具之製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2217608A1 (de) * 1971-04-12 1972-12-21 VEB Synthesewerk Schwarzheide, χ 7817 Schwarzheide Verfahren zur Herstellung von Kunststoffarbeitsformen für die industrielle Fertigung keramischer Erzeugnisse
GB1355521A (en) * 1971-01-15 1974-06-05 British Ceramic Res Ass Die assemblies for pressing ceramic material
GB2113601A (en) * 1982-01-15 1983-08-10 Harold Fletcher Making moulds particularly for use in the manufacture of sanitary ware or other large ceramic articles
DD245395A1 (de) * 1986-01-22 1987-05-06 Ver Porzellanwerke Veb Presswerkzeug zum verdichten silikatischer granulate
US5094796A (en) * 1990-03-19 1992-03-10 Agency Of Industrial Science And Technology Elastically deformable die and method of die forming using the die
WO1999058320A1 (fr) * 1998-05-12 1999-11-18 Fuisz Technologies Ltd. Ameliorations apportees a un ensemble matrice avec tete destine a façonner des unites posologiques par compression
WO1999062699A1 (fr) * 1998-06-05 1999-12-09 Aylward Enterprises, Inc. Appareil permettant de former un produit moule par compression

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1355521A (en) * 1971-01-15 1974-06-05 British Ceramic Res Ass Die assemblies for pressing ceramic material
DE2217608A1 (de) * 1971-04-12 1972-12-21 VEB Synthesewerk Schwarzheide, χ 7817 Schwarzheide Verfahren zur Herstellung von Kunststoffarbeitsformen für die industrielle Fertigung keramischer Erzeugnisse
GB2113601A (en) * 1982-01-15 1983-08-10 Harold Fletcher Making moulds particularly for use in the manufacture of sanitary ware or other large ceramic articles
DD245395A1 (de) * 1986-01-22 1987-05-06 Ver Porzellanwerke Veb Presswerkzeug zum verdichten silikatischer granulate
US5094796A (en) * 1990-03-19 1992-03-10 Agency Of Industrial Science And Technology Elastically deformable die and method of die forming using the die
WO1999058320A1 (fr) * 1998-05-12 1999-11-18 Fuisz Technologies Ltd. Ameliorations apportees a un ensemble matrice avec tete destine a façonner des unites posologiques par compression
WO1999062699A1 (fr) * 1998-06-05 1999-12-09 Aylward Enterprises, Inc. Appareil permettant de former un produit moule par compression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI620653B (zh) * 2017-02-06 2018-04-11 財團法人塑膠工業技術發展中心 具補強結構的快速模具之製造方法

Also Published As

Publication number Publication date
AU7966501A (en) 2002-01-02
DE10192501D2 (de) 2003-06-12

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