EP1990165A2 - Dispositif de pressage avec un moule et moule de pressage pour la réalisation d'articles obtenus à partir d'un matériau moulable - Google Patents

Dispositif de pressage avec un moule et moule de pressage pour la réalisation d'articles obtenus à partir d'un matériau moulable Download PDF

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Publication number
EP1990165A2
EP1990165A2 EP08008731A EP08008731A EP1990165A2 EP 1990165 A2 EP1990165 A2 EP 1990165A2 EP 08008731 A EP08008731 A EP 08008731A EP 08008731 A EP08008731 A EP 08008731A EP 1990165 A2 EP1990165 A2 EP 1990165A2
Authority
EP
European Patent Office
Prior art keywords
mold
article
molded part
press
space
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.)
Granted
Application number
EP08008731A
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German (de)
English (en)
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EP1990165A3 (fr
EP1990165B1 (fr
Inventor
Roland Dr. Menzel
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.)
DORST Technologies GmbH and Co KG
Original Assignee
DORST Technologies GmbH and Co KG
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
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Priority to PL08008731T priority Critical patent/PL1990165T3/pl
Publication of EP1990165A2 publication Critical patent/EP1990165A2/fr
Publication of EP1990165A3 publication Critical patent/EP1990165A3/fr
Application granted granted Critical
Publication of EP1990165B1 publication Critical patent/EP1990165B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0008—Venting channels, e.g. to avoid vacuum during demoulding or allowing air to escape during feeding, pressing or moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid 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
    • 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

Definitions

  • the invention relates to a press arrangement with a press mold for pressing pressed material to an article according to the preamble features of claim 1, or to a press mold according to the preamble features of claim 2 and 10 respectively.
  • Out DE 35 12 852 C2 is a press arrangement with a press mold for pressing pressed material to an article, in particular to a ceramic article such as plates or the like known.
  • the pressed material to be compacted usually consists of powdery or granular, preferably ceramic material.
  • the press arrangement has a first and a second molded part, each with an edge portion. On the inside of the molded parts, an article space is formed between them in a closed position, wherein the article space is closed in the lateral direction by the edge sections of the molded parts abutting one another in the closed position.
  • An adjusting device is used for adjusting the first and / or the second molded part along a movement axis relative to each other in the at least partially closed position for filling the article space with the pressed material and for pressing the pressed material to the article or for adjusting the first and / or the second Shaped relative to each other in a spaced position for removing the pressed article.
  • a control device is used to control the movement of the adjusting device, in particular for controlling hydraulic pistons for adjusting the molded parts, for applying a pressing membrane arranged on one of the molded parts and for adjusting a so-called filling ring.
  • the filler ring extends on the outside about at least one of the two mold parts and has a filling opening for supplying pressed material and a Vent for venting the article space when filling.
  • the individual components are driven according to the method for pressing the pressed material to form an article.
  • the first and the second molded part are moved relative to each other in an at least partially closed position, whereupon the article space is filled with the pressed material.
  • the two mold parts are aligned in such a way that the article space extends with a longitudinal axis from bottom to top, so that the pressed material can be filled from above into the article space.
  • the filler ring and / or one of the mold parts to fully close the tool or the press mold are adjusted. Then the pressed material is pressed to the article.
  • the first and / or the second mold part are adjusted relative to each other in a spaced position for removing the pressed article, wherein the filler ring is moved together with the directly adjacent mold part. Due to the preferred orientation of the press mold, the article slides down out of the spaced apart moldings out onto a conveyor belt disposed thereunder. The release of the article from the moldings is done by the relief and consequent expansion of the article automatically.
  • EP 0 197 415 B1 describes a press arrangement in which a first and a second molded part can only be moved towards each other so far that a small axial annular gap remains between the edges of their end faces, wherein on one of the molded parts an axially projecting annular edge in the direction of the opposite molded part by an axial directed outer projection is supported, on which an annular part is radially outwardly displaceable.
  • the annular part has at least one vacuum connection for applying a negative pressure to the axial annular gap.
  • the vacuum port is laterally offset axially against the remaining at the edge of the mold parts with closed press assembly axial annular gap and connected thereto via a ring clearance.
  • EP 0 563 577 B2 describes a press arrangement in which at the first and / or second molded part in the region of serving as a vent gap annular gap, a device for adjusting the clearance of the vent gap regardless of an adjustment of an axial, a shard thickness of the article defining dimension Article space is provided.
  • This serves to be able to vary a distance of the two mold parts relative to each other, for example, when finer or coarser material to be pressed is filled into the article space so as to be able to press a consistently same article thickness despite the different material.
  • With such an adjustment device for the clear width of the venting gap is to ensure that the venting gap has a width or width of 0.3 mm or in exceptional cases, a slightly larger or smaller width is adjustable.
  • the object of the invention is to propose a press assembly with a press mold or a press mold for pressing pressed material to an article, which require a lower reworking effort.
  • at least a major proportion of the scope of the article should be formed burr-free, so that the article in this burr-free scope is only smooth by sponging and free of any burr approaches.
  • the object of the invention to be able to save material in the production of at least one of the membranes and to simplify the membrane assembly.
  • a press arrangement with an isostatic press mold for pressing pressed material to an article comprising a first molded part with a Edge section, a second molded part with an edge portion, an article space is formed in a closed position between the mold parts and their edge portions, an adjusting device for adjusting the first and / or the second molded part relative to each other in an at least partially closed position for filling the article space with the pressing material and for pressing the pressed article to the article and for adjusting the first and / or the second molded part relative to each other in a spaced position for removing the pressed article and a control device for controlling the movement of the adjusting device.
  • an isostatic press mold is advantageous for pressing material to be pressed into an article in a press arrangement, wherein the press mold has a first molded part with an edge section, a second molded part with an edge section, an article space which is formed in a closed position between the molded parts and their edge sections and shoulder areas, eg clamping surfaces or threaded pieces for an adjusting device for adjusting the first and / or the second molded part relative to each other in an at least partially closed position for filling the article space with the pressed material and for pressing the pressed material to the article and for adjusting the first and / or the second molding relative to each other in a spaced position for removing the pressed article.
  • Such a press arrangement or such a press mold are advantageous in particular in that from outside the first molded part and the second molded part through at least one peripheral section of the edge sections of the first molded part and the second molded part a filling space with a sufficiently wide for filling a pressed material distance between the first Form part and the second mold part leads into the article space and a remaining peripheral region of the opposite edge portions of the first Molded part and the second molded part has a venting gap for venting the article space.
  • Such a press arrangement or press mold is preferred in which the remaining peripheral region of the edge sections of the first molded part and of the second molded part has the venting gap having a width equal to or less than 0.3 mm, in particular equal to or less than 0.25 mm, preferably equal to or less than 0, 17 mm for venting the article space.
  • a press arrangement or press mold wherein the at least one peripheral portion of the edge portions of the first mold part and the second mold part, the filling space with the wide distance between the first mold part and the second mold part is equal to or greater than 2.5 mm, in particular equal or greater 3 mm.
  • the at least one peripheral portion of the edge portions of the first molded part and the second molded part, the filling space with preferably the wide distance between the first mold part and the second mold part is less than 6 mm, in particular equal to or less than 5 mm.
  • the filling space in the at least one peripheral portion of the edge portions of the first mold part and the second mold part preferably extends over a peripheral portion of less than 31 °, in particular less than 16 °, preferably less than 8 ° of the circumference of the peripheral portion.
  • the filling space and the venting gap are spaced apart by a configuration of a region separating them in terms of flow characteristics.
  • first and the second mold part for filling with the pressed material and for pressing the pressed material to the article are arranged relative to each other in a closed position, in particular in the same closed position. This eliminates a step of the first only partial closing, since the two mold parts are directly closed completely. Advantageously, this step prevents the penetration of pressed material into the venting gap.
  • control device may be designed to suitably adjust at least one receiving volume for the pressed product and / or a width of the article space between the first molded part and the second molded part by applying a correspondingly dimensioned pressure in a pressure space between a surface of the first molded part and one above the second mold part facing and attached to the first molding elastic membrane.
  • an isostatic press mold for pressing pressed material to an article in particular press mold according to any preceding claim, comprising a first molded part with a rim portion, a second molded part with a rim portion, an article space of formed in a closed position between the mold parts and their edge portions is, and at least one elastic membrane which is attached to the first mold part via its second mold part facing surface with a clamping region of the membrane outside the outside of the article space, wherein the clamping region of the membrane fixedly against the surface of the first molded part or to a component attached thereto is curious.
  • the clamping region of the membrane has at least one membrane projection which is pressed into a receiving opening in the surface of the first molded part, and the clamping region in the outer direction of an article plane viewed from the article space at least one deflection of the membrane in the direction of the first molded part has less than 80 °.
  • the deflection of the membrane in the direction of the first molded part preferably has an angle of between 4 ° and 70 °.
  • the membrane in the clamping region, the membrane has a thickness of 4 mm or less, in particular of 3 mm or less.
  • the membrane protrusion preferably has a height ratio to a membrane thickness of the membrane of 2.0 or less. According to first experiments, a height ratio of 0.1-1.0 provides particularly good hold for the membrane. It is particularly advantageous if the membrane projection forms a circumferential sealing lip.
  • Such a press arrangement or press mold for pressing the article from a ceramic pressed material are formed.
  • a use of such a press mold for pressing a pressed product in the form of a powder or granules having a mean grain diameter greater than a free distance of the mutually opposite edge sections in the region of the venting gap is preferred.
  • a substantially burr-free pressing is made possible, wherein over a large part of the circumference of the venting gap is selected so narrow that no powder or granules can enter, which forms a burr at the edge of the article during removal. This is made possible by consciously accepting a remaining press ridge in a relatively small peripheral section of the article, specifically in the filling area of the granulate or powder to be pressed.
  • the venting gap for forming the filling space is expediently wider than hitherto customary, which leads away from the previous idea of providing a circumferentially uniform venting gap, for which purpose the membrane forms a filling pocket or a filling space with a correspondingly large distance from the opposite membrane ,
  • the outside edge region of the membrane is no longer angled at 90 ° or even two times 90 °, but is formed with a projection aligned axially parallel to the pressing direction, which engages in a corresponding receiving opening of an opposing molded part.
  • this is not just one or more such projections, but an annular circumferential bead, which protrudes on a side wall of the membrane. This allows both a material savings with a view to the membrane material in the membrane production as well as a simplified installation on the corresponding molding.
  • FIG. 1 shows a first embodiment of a press assembly or a press mold P used therein, wherein for better illustration of essential aspects of a not to scale representation is selected.
  • FIGS. 2 and 3 show two enlarged sections Fig. 1 ,
  • the press mold P is usually next to a variety of other known per se of particular components of a first mold part 1 and a second mold part 2.
  • a filling device 4 By means of a filling device 4, pressed material 5 is filled into the article space 3 in a closed position. Subsequently, the pressed material 5 is pressed in the article space 3 to an article 6.
  • the article 6 is for example a plate or a bowl and the pressed material 5 in such a case corresponding to a ceramic powder or granules.
  • other pressings 5 in such a press arrangement or press mold can be pressed into articles 6.
  • the individual components of such a press assembly or press mold can be constructed and arranged not only as described, but also according to further embodiments in a manner known per se.
  • the first molded part 1 and the second molded part 2 each have an edge section 10, 10 * or 20, 20 *.
  • the two edge portions 10, 20 are in a closed position of the press mold opposite each other and limit the article space 3 in the lateral direction.
  • the first mold part 1 in the illustrated embodiment consists of a back-side main body 11 having a front-side shaped surface.
  • the front side ie the article space 3 facing, is on the back Main body 11 an elastic membrane 12 mounted.
  • the elastic membrane 12 is in the region of the outer periphery outside of the article space 3 fixedly connected to the rear main body 11.
  • a fixed connection is to be understood in particular also a clamping or pinching in the edge region of the membrane 12, so that it rests freely in the region between its edge on the adjacent surface of the main body 11.
  • the membrane 22 of course on one of the mold parts 2, as shown on the second mold part 2 be firmly molded onto the molded body 23. Also, this membrane 22 on the second mold part 2 but could only be fixed laterally clamped, as the membrane 12 on the first mold part. 1
  • a pressure chamber 13 which is connected via one or more pressure lines 14 with a pump. Via the line 14, the space 13 for pressing a filled into the article space 3 pressing material 5 with in particular a hydraulic medium under such high pressure p filled that the membrane 12 presses against the pressed material 5. As a result, isostatic compression of the pressed material 5 is carried out in the article space 3 to the article 6.
  • the first mold part 1 also has an outer circumferential body 15 in a manner known per se.
  • the actual edge portion 10 of the first mold part 1 is thus formed in this exemplary embodiment of a portion of the membrane 12 side of the article space 3 and optionally from a side wall of an additional membrane-mounting body 15.
  • the second molded part 2 likewise consists of a rear-side main body 21 and a front-side membrane or coating 22, ie, facing the article space 3.
  • the mold 2 is used as an example between the membrane or coating 22 and the main body 21 in the second mold part 2.
  • the edge portion 20 is formed in this embodiment by a lateral portion of the membrane or coating 22 and the end face of a narrow peripheral wall 24 of the main body 21 of the second molded part 2.
  • the end face of the narrow circumferential wall 24 is located radially on the outside of the membrane 22 and of the molded body 23 and protrudes axially parallel to the pressing direction or movement axis X of the molded parts 1, 2.
  • the filling device 5 For filling the article space 3 is the filling device 5, which is formed according to a particularly preferred embodiment as part of a rotating body 40 around the lateral wall of the rear main body 21 of the second mold part 2 around.
  • This circulating body 40 preferably serves as a so-called filling ring and has a pressed material channel 41 in at least one section.
  • the pressed product channel 41 leads from an outside circumferential wall to an inside wall of the circulating body 40, which in a filling position is arranged adjacent to a widened section of the venting gap as a filling space S * between the edge sections 10, 20. In the filling position, the pressed material 5 is filled into the article space 3 via the pressed product channel 41 and the filling space S *.
  • a first essential feature according to a first advantageous embodiment which can also be implemented as the sole essential component, are the edge sections 10, 10 *, 20, 20 * of the two molded parts 1, 2 configured differently dimensioned over their circumference.
  • the vent gap S has a width of 0.25 mm or less, especially of 0.20 mm or less.
  • this distance of the two membranes 12, 22 from one another causes no pressed material to penetrate into the ventilation gap S.
  • the distance between the membranes 12, 22 or the width of the venting gap S can optionally also be set lower.
  • the pressed material in particular dust particles, penetrate into the venting gap S, but it is so small amounts that no pressing ridge forms during pressing of the article 6 at the peripheral edge in the region of the venting gap S. Any burrs that may have been formed are so small that they can be removed without special deburring steps by means of, for example, simple sponging.
  • a negative pressure pu is applied to the outside of the ventilation gap S.
  • the negative pressure PU is not discharged via a directly from the venting gap S in a straight outside direction.
  • annular gap S ° preferably also with only a small opening width of 0.25 mm, in particular 0.20 mm or less, formed.
  • the annular gap S ° is in communication with the venting gap S, to which the venting gap S preferably from the transition to Article space 3 extends to the annular gap S ° out.
  • the annular gap S ° opens on its side facing away from the vent gap S side in a vent passage 43, which may optionally have a greater width.
  • both the venting channel 43 and the annular gap S ° may extend only partially, possibly over a plurality of subsections or over the entire circumference of the second molded part 2.
  • the arrangement of annular gap S ° and the venting channel 43 extends over a same circumferential region, such as the peripheral region, over which the venting gap S extends.
  • the negative pressure pu can thus be advantageously applied to the article space to achieve its venting during the filling of the article space 3 with the pressed material 5.
  • the filling device 4 is arranged in at least one circumferential section of the press arrangement.
  • the press arrangement is arranged for filling in such a way that the movement axis X is oriented horizontally and the filling device 4 is arranged in such an orientation on an upper side of the press arrangement.
  • the filling device 4 consists essentially of a pressed material silo or a pressed material supply line, which is connected to the Gregutkanal 41.
  • the filling device 4 preferably additionally has a closing element which, for example in the form of a slide, can be adjusted in the path of the filling material channel 41 in order to open it only for filling the article space 3.
  • the venting gap S for filling the article space 3 must be able to be filled with closed moldings 1, 2 in such an arrangement, between the edge sections 10 *, 20 * or between the membranes 12, 22 or coatings in the region of the edge sections 10 *, 20 * the filling space S * with a sufficient distance between the opposed membranes 12, 22 is formed.
  • a membrane thickness of the membranes 12, 22 can be correspondingly reduced in this area and / or a surface of the first molded part 11 or of the shaped body 23 located at the rear of the membranes 12, 22 can be correspondingly recessed ,
  • the filling space S * extends in particular over a width equal to or greater than an adjacent width of the Gregutkanals 41.
  • an extension of the filling space S * appears in the circumferential direction of the edge portions 10 *, 20 * of 5% as a particularly cheap.
  • narrower or wider filling spaces S * can also be provided as filling pockets in the circumferential direction. This broader pockets offer the advantage of faster filling of the article space 3 with the pressed material 5 *, while a narrower in the circumferential direction filling space S * the advantage of the article edge of the article 6 in the circumferential direction only narrower remaining burr 6 * offers.
  • the filling space and the venting gap are by one fluidically separating embodiment of a region between them spaced.
  • This can be implemented, for example, by a web extending in the radial or outward direction. It is also possible to implement depression depths of different depth relative to a base level of the surface of the membrane in the region of the edge section in order to form contours of different depths for the filling space and the venting spar.
  • a press ridge 6 * is limited to a relatively small peripheral region of the article 6, while the remaining peripheral region of the article 6 is free of press burrs or only still negligible approach traces of a burr has.
  • the clamping region 16 of the elastic membrane 12 of the first molded part 11 has an advantageous embodiment.
  • such a preferred embodiment is also independently without an embodiment with a described as low vent gap and widened filling space feasible.
  • the clamping region 16 represents the outermost peripheral region of the diaphragm 12, which extends on the outside of the filling space S * or on the outside of the ventilation gap S.
  • the clamping area 16 has in particular at least one diaphragm projection 17, which extends from the diaphragm 12 in a direction substantially parallel to the axis of movement X.
  • the membrane projection 17 is arranged so that it engages in a correspondingly shaped receiving opening for the diaphragm projection 17, wherein the receiving opening is embedded in a wall of the first molded part 10, at which the Clamping 16 of the membrane 12 is applied.
  • the membrane projection 17 is inserted into the receiving opening a lateral draw resistance against retraction of the membrane 12 in the direction of the article space 3.
  • the membrane projection 17 is elastic and can therefore be larger in size than the receiving opening receiving it.
  • this has two oppositely angled angle ranges with angles ⁇ , wherein the angle ⁇ are preferably arranged in an angular range of 5 to 70 °. Avoided by 90 ° angled and perpendicular casting surfaces, whereby the membrane is arbitrarily pivotable when casting the membrane. This considerably simplifies the casting of extremely difficult contours of the membrane.
  • Such a membrane 12 preferably has a membrane thickness in the range of 0.5 to 3 mm in thickness, wherein the membrane thickness can in particular be made substantially uniformly thick over the entire surface of the membrane 12.
  • a multiplicity of such diaphragm projections 17 can be arranged distributed with corresponding opposite receiving openings over the circumference of the first molded part 10.
  • the design as an all-round or up to the area adjacent to the filling space S * circumferential annular diaphragm projection 17 can be advantageously implemented.
  • the production of the membrane 12 is preferably made of polyurethane, silicone or other compliant substance.
  • the attachment of the membrane 12 of such a material can be done in a simple manner by clamping the clamping area 16 between the wall of the first mold part 10 and an opposite wall of the second mold part 2 and / or the circulating body 40.
  • This can allow a firm attachment of the membrane 12 directly to the first mold part 1, regardless of the instantaneous position of the opposite mold part 2 or the rotating body 40.
  • the sealing lip forming a membrane projection 17 is pressed into the corresponding receiving opening or pressed against the adjacent surface of the rear main body 11, whereby a particularly good seal is formed.
  • a support section between the article space 3 and the outermost portion of the clamping area 16 ensures that the membrane 12 is not drawn inwards during pressing.
  • the support may be formed in a simple manner by a press-protruding portion of the rear main body 11, to which the two angled portions of the clamping portion 16 adjoin in the outboard direction.
  • the first molded part 1, the second molded part 2 and / or the peripheral body 40 serving as a filling ring are adjustable relative to one another in the direction of a movement axis X.
  • the movement axis X preferably runs centrally through the article space 3 and along its short height dimensioning. In other words, the movement axis X passes through the first molded part 1, across the article space 3 and through the second molded part 2 perpendicular to an article plane spanned by the article space 3.
  • the revolving body 40 may be adjustable along an axis parallel to or equal to this central axis of movement X.
  • the rotating body 40 is fixedly connected to the second mold part 2 or, if necessary, even integrally constructed with it as lateral broadening of the second mold part.
  • an adjusting device which is provided and programmed via a central control device for moving the individual components of the adjusting or for separately moving the first mold part 1, the second mold part 2 and / or the rotating body 40.
  • the arrangement is selected so that only one component, the first or the second mold part 1, 2 is moved.
  • the control device usually controls the pressing or letting out of the hydraulic medium in the pressure space 13 between the diaphragm 12 and the rear-side main body 11 of the first molded part 1.
  • the adjusting device preferably has a plurality of piston-cylinder devices not shown in the figure.
  • a first piston-cylinder device is used for adjusting the first molded part 1 along the movement axis X.
  • a second piston-cylinder device is used for adjusting the second molded part 2 along the movement axis X.
  • the third Piston-cylinder device is used to adjust the rotating body 40th
  • one of the mold parts may be arranged as a fixed component in the press arrangement.
  • the rotating body 40 can optionally be formed as part of the press mold P or as an independent part of the press arrangement. In the case of a self-contained embodiment, the rotating body 40 is then placed in the press assembly together with the press mold.
  • the piston-cylinder device for adjusting the rotating body 40 may be directly connected to, for example, a frame of the press arrangement.
  • the piston-cylinder device for adjusting the rotating body 40 may also be connected to the press mold P and / or to the first mold part 1 or a rear-side section of the main body 21 thereof.
  • the circumferential body 40 which is arranged on the outside of the first molded part 1 and the venting gap S, thus preferably serves at the same time as a filling device and as a venting device.
  • a multi-part design can be implemented, in which separate independent components for venting or for filling together or mounted on a common base.
  • a section of one of the edge sections or both of the edge sections 10, 20 may also be widened in a peripheral region in such a way that a gap S remains open as the filling gap in the case of edge sections 10, 20 which are otherwise close to each other.
  • the closing element 45 can be adjusted for closing or opening the Greinsky.
  • a described preferred embodiment of the clamping region 16 with angles smaller than 80 °, in particular smaller than 71 ° of the membrane 12 can Of course, be transferred to other such membranes to be attached.
  • the press arrangement or the press mold is closed.
  • one or both of the mold parts 1, 2 and / or serving as a filler ring circumferential body 40 is adjusted.
  • only the first mold part 1 is to be adjusted in the direction of the second mold part 2 to almost close the vent gap S between the two adjacent edge portions 10, 20.
  • the two mold parts 1, 2 are moved towards each other so far that the gap as a vent gap S between the two edge portions 10, 20 of the two mold parts 1, 2 for venting the article space 3 remains sufficiently open, but for receiving parts of the pressed material. 5 is closed too far. At most negligible proportions, in particular dust contents of the pressed material 5 can penetrate into the venting gap S.
  • the venting gap S is closed to a free width or width of 2.5 mm or less, in particular of 2 mm or less.
  • the hydraulic medium is introduced or pressed through the lines 14 into the space 13 between the membrane 12 and the rear main body 11 of the first molded part 1 so strongly, so that the membrane 12 Recording volume of the article space 3 for the who loved religiousde pressed material 5 suitably reduced or possibly. Enlarged.
  • the rotating body 40 should be designed as a self-adjustable component, this is adjusted in this process step in a filling position, which Transport of the pressed material 5 from the Pressgutkanal 41 on the filling space S * in the article space 3 allows.
  • the closing element 45 can be adjusted to close or open the Greinsky ring in the region of the filling device 4.
  • the filling device 4 can also be designed as an independent arrangement of components and arranged adjacent to the filling space S * on a press arrangement.
  • the filling with the pressed material 5 is supported by the fact that at other sections of the adjacent edge portions 10, 20 to the venting gap S of the vacuum pu is applied so as to suck air from the article space 3 and to support the filling of the article space 3.
  • the hydraulic medium is pressed through the lines 14 in the space 13 between the membrane 12 and the rear main body 11 of the first mold part 1 in a subsequent process step, so that the membrane 12 presses the pressed material 5 located in the article space 3 and so the article 6 trains.
  • the pressed article 6 is finally finally by discharging the hydraulic medium via the pressure lines 14 and / or spacing of the mold parts 1, 2 from each other gradually relaxed, as shown, and issued after opening the moldings 1, 2 on a conveyor belt.
  • the article 6 slips down from the press mold P on a conveyor belt. Apart from an edge region, which was located during pressing next to the filling space S * and which one Under certain circumstances, even have thick Pressgrat, the article 6 is ideally completely pressbone free.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP08008731.5A 2007-05-10 2008-05-09 Dispositif de pressage avec un moule, moule de pressage pour la realisation d'articles obtenus a partir d'un materiau moulabe et utilisation d'un tel dispositif ou moule de pressage Active EP1990165B1 (fr)

Priority Applications (1)

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PL08008731T PL1990165T3 (pl) 2007-05-10 2008-05-09 Układ prasujący z formą prasującą, forma prasująca do prasowania tworzywa do prasowania w wyrób i zastosowanie takiego układu prasującego lub formy prasującej

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DE102007021898.4A DE102007021898B4 (de) 2007-05-10 2007-05-10 Pressenanordnung mit einer Pressenform bzw. Pressenform zum Pressen von Pressgut zu einem Artikel

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EP1990165A2 true EP1990165A2 (fr) 2008-11-12
EP1990165A3 EP1990165A3 (fr) 2012-11-21
EP1990165B1 EP1990165B1 (fr) 2021-06-16

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EP (1) EP1990165B1 (fr)
DE (1) DE102007021898B4 (fr)
ES (1) ES2882704T3 (fr)
PL (1) PL1990165T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11260557B2 (en) * 2016-08-08 2022-03-01 Monier Roofing Gmbh Press die and method for producing a roof tile

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Publication number Priority date Publication date Assignee Title
DE3512852C2 (fr) 1985-04-10 1990-03-15 Dorst - Maschinen- Und Anlagen-Bau Otto Dorst U. Dipl. Ing. Walter Schlegel Gmbh & Co, 8113 Kochel, De
EP0563577B2 (fr) 1992-03-30 2000-06-21 Erich Netzsch GmbH & Co. Holding KG Procédé et dispositif pour la fabrication d'objets en matière céramique à partir d'un matériau s'écoulant librement

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BE356825A (fr) * 1927-12-20
DE3144678A1 (de) * 1981-11-10 1983-05-19 Eugen Dipl.-Ing. 8871 Burtenbach Bühler Verfahren und einrichtung zur herstellung von formlingen aus einer rieselfaehigen masse
IT1192004B (it) * 1986-06-18 1988-03-31 Fonderie Officine Meccaniche B Sistema di fissaggio di membrana elastomerica allo stampo superiore per prodotti ceramici
DE102004036111A1 (de) * 2004-07-24 2006-02-16 Dorst Technologies Gmbh & Co. Kg Pressenanordnung mit einer Pressenform, Pressenform bzw. Verfahren zum Pressen von Pressgut zu einem Artikel
DE102005045244B3 (de) * 2005-09-22 2007-01-04 Sama Maschinenbau Gmbh Vorrichtung zur Herstellung von unrunden Keramikgegenständen

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DE3512852C2 (fr) 1985-04-10 1990-03-15 Dorst - Maschinen- Und Anlagen-Bau Otto Dorst U. Dipl. Ing. Walter Schlegel Gmbh & Co, 8113 Kochel, De
EP0197415B1 (fr) 1985-04-10 1990-07-04 Dorst Maschinen und Anlagenbau Otto Dorst und Dipl.-Ing Walter Schlegel GmbH & Co. Outil de pressage pour la fabrication de corps pressés en forme de plat, en particulier des plaques, assiettes, des tasses, des plats ou analogues en matière pulvérulente, de préférence en matière céramique
EP0563577B2 (fr) 1992-03-30 2000-06-21 Erich Netzsch GmbH & Co. Holding KG Procédé et dispositif pour la fabrication d'objets en matière céramique à partir d'un matériau s'écoulant librement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11260557B2 (en) * 2016-08-08 2022-03-01 Monier Roofing Gmbh Press die and method for producing a roof tile

Also Published As

Publication number Publication date
ES2882704T3 (es) 2021-12-02
EP1990165A3 (fr) 2012-11-21
EP1990165B1 (fr) 2021-06-16
DE102007021898B4 (de) 2019-05-02
PL1990165T3 (pl) 2021-11-08
DE102007021898A1 (de) 2008-11-13

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