EP0118872B1 - Dispositif pour fabriquer des articles moulés en béton ou analogue - Google Patents

Dispositif pour fabriquer des articles moulés en béton ou analogue Download PDF

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Publication number
EP0118872B1
EP0118872B1 EP84102419A EP84102419A EP0118872B1 EP 0118872 B1 EP0118872 B1 EP 0118872B1 EP 84102419 A EP84102419 A EP 84102419A EP 84102419 A EP84102419 A EP 84102419A EP 0118872 B1 EP0118872 B1 EP 0118872B1
Authority
EP
European Patent Office
Prior art keywords
stamp
partial
molding
mould
stamps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84102419A
Other languages
German (de)
English (en)
Other versions
EP0118872A3 (en
EP0118872A2 (fr
Inventor
Joachim Scheidt
Gottfried Keller
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.)
Rampf Formen GmbH
Original Assignee
Rampf Formen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rampf Formen GmbH filed Critical Rampf Formen GmbH
Priority to AT84102419T priority Critical patent/ATE36483T1/de
Publication of EP0118872A2 publication Critical patent/EP0118872A2/fr
Publication of EP0118872A3 publication Critical patent/EP0118872A3/de
Application granted granted Critical
Publication of EP0118872B1 publication Critical patent/EP0118872B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
    • B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets
    • 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
    • B28B3/08—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould
    • B28B3/083—The juxtaposed rams working in the same direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article

Definitions

  • the invention relates to a device for the production of moldings from concrete or the like, in particular concrete paving stones and lawn stones, the upper side of which has partial surfaces of different heights, with a stamp which is fitted into a mold and is movably guided with respect to it, which consists of two partial stamps, one of which being the one forms the underlying partial surface, surrounds the other in an annular manner, the relative movement of the partial punches being limited in both directions by stops and at least the inner partial punch being able to be acted upon by a force pushing it downward.
  • a molding device of this type is known from US-A-1 807 661. It is a brick press, the shape of which consists of a fixed mold frame and a flat lid, the stamp pushing upwards and pushing out the molding after the molding process and opening of the lid.
  • a similar brick shaping device is also known from US-A-1 630 436.
  • the mold frame is also fixed and has a bottom that can be raised to eject the molded part.
  • the two-part form of the die does not serve to produce a molded part with a graduated surface, but the task is to be used to form a brick with a precisely defined outline from a clay lump that is not precisely defined in terms of volume and compressibility.
  • the lower part of the area in the edge area is therefore formed with dimensional accuracy, the height of the upstanding central part of the molding depending on chance.
  • the upstanding middle section is cut off at the edge height, so that a dimensionally accurate cuboid remains.
  • the shaping is facilitated by brushing the preform with oil before inserting it into the mold.
  • molding devices for dry concrete mixtures are known from prior public use, which operate as follows. First of all, a molding frame lying on a molding table is filled with the concrete mixture and smoothed off. The stamp then lowers into the mold frame, the mold table and / or a load on the stamp being subjected to a shaking movement which supports the compaction of the concrete. Then the mold is immediately formed, for which purpose the mold frame is raised, which takes the stamp with it after a first stroke section.
  • the molding devices described last are designed as multiple molding devices for the production of composite paving stones, with which a larger number of moldings can be deposited at once.
  • the object on which the invention is based is to create, for the purpose of producing shaped stones of the type shown in FIG. 1, multiple molding devices with split stamps in order to achieve sufficient compaction in the edge region and clean shaping. These formers should function safely and clean themselves to a sufficient degree. Finally, the possibility is to be created to retrofit existing form devices with single stamps with split stamps.
  • the shape is designed as a mold frame that can be raised with respect to a molding table, that the annular partial stamp forms the side walls and the inner partial stamp forms the bottom of a box-shaped stamp head, that guide pins attached to the inner partial stamp form the Push the cover of the stamp head through and that the compression springs surrounding the guide pins are clamped between the cover and the inner partial stamp.
  • a relatively compact stamp head is particularly suitable for retrofitting commercially available multiple molding machines and can interact with the loads that are common there.
  • the ring-shaped part of the stamp is connected to a first load by rods and that the inner part of the stamp carries a second load which is guided on the rods.
  • compression springs can be clamped between the loads.
  • the two-part design of the stamp results in a particular problem when the molding device according to the invention is to be used in a so-called multi-layer paver.
  • This is a well-known, usually fully automatic molding machine that layers the fresh, not yet hardened concrete molds layer by layer on a transport pallet - wet on wet.
  • some dry sand may be sprinkled between them.
  • the moldings in this type of machine are stacked in transportable packaging units right from the start and harden in this way, which saves work space, storage facilities and, above all, the work processes that are otherwise associated with putting together the moldings stored individually for curing on transport pallets.
  • the peculiarity of the multi-layer paver is that after pressing and compacting the molding, the vibrating table is removed and a pallet with any moldings already deposited on it is placed under the mold in order to place the last molding still in the molding box on it.
  • holding members are provided which automatically immovably fix the inner partial punch in its upper position to the annular partial punch and that measures are taken to release the holding members after the molding table has been removed and replaced by another bearing surface and before the upward movement of the ring-shaped partial punch begins during the shaping.
  • the holding members can, for. B. on the ring-shaped partial ram rotatably mounted pawls or other locking elements which latch themselves by spring force and thus absorb the weight of the inner partial ram and the spring forces acting on it. Therefore, the molding remains stuck in the bottomless molding box during the exchange of the vibrating table with the pallet, as is known in the case of molds with one-piece stamps.
  • d. H. to unlock the two partial punches control lugs are preferably provided on the mold frame, which act on the locking members when the mold frame is raised.
  • the composite paving stone shown in Fig. 1 has a base body with cross-sectionally trapezoidal teeth 1 which interlock when laid and give the stones mutual support.
  • the visible side consists of a center field 2 with an embossed surface, the outline of which is arbitrarily drawn irregularly in order to give the impression of a hewn natural stone.
  • the middle field 2 is surrounded by a shoulder surface 3 which, due to the teeth 1 and the shape of the middle field 2, has an uneven width and slopes slightly outwards.
  • the middle fields are surrounded by wide, uneven dummy joints, which have a very rustic effect, even though the stone foundations are closely connected and are therefore highly resilient.
  • the molding shown in Fig. 2 is used only for easier graphic representation of the molding device. 1, it has a raised central surface 4 and a recessed, outwardly inclined shoulder surface 5, but the central surface 4 is rectangular, the frame-shaped shoulder surface 5 is of the same width throughout, and the side surfaces 6 of the base body and the side surfaces 7 of the middle section above are flat.
  • the individual parts of the molding device for producing a molding according to FIG. 2 are described with reference to FIGS. 3 and 4. As usual, it is a so-called multiple mold, with which several moldings can be produced in one movement. On a molding table 8 there is a molding frame 9, which forms individual quadratic chambers and is higher than the molding. The movement mechanism for lifting the mold frame 9 is not shown. Likewise, the movable part of the molding machine to which the overall load 10 is attached is missing in this illustration.
  • the load here consists of an upper fastening plate 11, a stamp shaft 12 per stamp and a guide plate 13 attached to the lower end of each stamp shaft.
  • the stamp shafts 12 are designed in detail in accordance with the required weight.
  • stamp ring 15 On each guide plate 13, the ceiling 14 of a box-shaped stamp head is fastened, the side walls of which form the partial stamp hereinafter referred to as stamp ring 15 for forming the shoulder surface 5.
  • the lower edge of the stamp ring 15 is bevelled accordingly.
  • a stamp plate 16, which corresponds in its dimensions to the central surface 4, serves as the movable bottom of the box-shaped stamp head.
  • the guide pins 17 are surrounded by helical springs 18, which act as compression springs and are supported at the top by the ceiling 14 and at the bottom by the stamp plate 16. This is therefore pushed down with respect to the stamp ring 15, this movement being limited by the heads 19 of the guide pins 17 as stops.
  • a weight 20 is attached to each of the stamp plates 16, which limits the upward stroke movement of the stamp plate 16 by a stop on the ceiling 14.
  • Fig. 4 shows the device in the rest position at the beginning of the molding process.
  • the molding frame 9 rests on the molding table 8 and is filled with loose concrete and smeared.
  • the stamp plates 16 initially lie on the concrete mass (FIG. 5) and in the further course the stamp rings 15 penetrate to their lower position limited by the molding machine (FIG. 6).
  • This process is supported by shaking the molding table 8 and / or the load 10. The shaking movement is also transferred to the stamp plate 16 and its weight 20, so that in the last phase of the molding process the stamp plate 16 lowers to the stop.
  • the molding begins with the mold frame being raised to the position shown in FIG. 7, while the stamp head remains on the molding. If in the further course (FIG. 8) the load 10 also moves upward, the stamp ring 15 moves with it, but the stamp plate 16 remains on the central surface 4 while the springs 18 are simultaneously relaxed. As a result, the side surface 7 of the molding is smoothed out, so that as the last step, only the stamp plate 16 needs to be lifted off. In this way a clean formation is ensured and cleaning of the molding device is normally not necessary.
  • a corresponding stamp ring 15 ' is connected via rods 21 to a corresponding fastening plate 11', which together with the rods forms a first load.
  • Stamp shafts 22, which are connected to one another by a guide plate 23, are fastened to corresponding stamp plates 16 '.
  • This guide plate 23 is penetrated by the rods 21 and guided on them.
  • Compression springs 24 are clamped between the mounting plate 11 'and the guide plate 23 and as a result urge the stamp plate 16' downwards.
  • Their stroke is limited at the bottom by stop rings 25 on the rods 21 and by stop blocks 26 which are attached to the mounting plate 11 '.
  • the shaping device according to FIGS. 10 to 12 can only be understood as a section of a larger multiple shaping device for, for example, 30 concrete paving stones.
  • the actual molding box walls 31 are attached to a relatively high molding frame 30 below.
  • a cam 32 is welded onto the upper edge of the mold frame and is chamfered at its left corner.
  • a stamp ring 33 is fastened to a plate 34 which is fixedly connected to a fastening plate 36 via guide bolts 35.
  • the guide bolts 35 show a lower part of a larger diameter, which merges into an upper part of a smaller diameter via a support shoulder.
  • On the mounting plate 36 is a bearing eye 37 of a pawl 38 which hangs down and can rotate about a pin 39. At the top, this pawl has a rear standing bolt 40.
  • a tension spring 41 pulls it to the left.
  • the pawl 38 is thus mounted on the structural unit carrying the stamp ring 33.
  • a stamp plate 42 Compared to this unit, another unit, consisting of a stamp plate 42, a stamp shaft 43 and a guide plate 44 is movable up and down.
  • the guide bolts 35 pass through the guide plate 44 with play.
  • a plate-shaped pawl tooth 45 which interacts with the pawl 38, is welded under the right edge of the guide plate 44. Spring elements between the two structural units carrying the stamp parts are not provided in this example.
  • the molded box 31, filled with concrete and smeared lies on a vibrating table 46.
  • the stamp assembly is in a downward motion above it.
  • the assembly 42, 43, 44 occupies its lowest position relative to the assembly 33 to 36.
  • the guide plate 44 lies on the support shoulder of the guide pin 35.
  • the pawl 38 is released.
  • the stamp plate 42 deflects upward relative to the stamp ring 33.
  • the guide plate 44 connected to the stamp plate 42 lies against the fastening plate 36.
  • the spring 41 pulls the pawl 38 under the pawl tooth 45.
  • FIG. 11 The compression process has now ended and the vibrating table 46 can be moved away, which is also indicated in FIG. 11.
  • the molding 48 is now not supported from below. It only hangs in the mold box as a result of adhesion.

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  • 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)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Claims (5)

1. Dispositif de fabrication de briques en béton ou similaire, en particulier de pavés de béton et de briquettes à gazon, dont le côté supérieur possède des surfaces partielles de différentes hauteurs, avec un poinçon adapté dans une forme et guidé de manière mobile par rapport à celle-ci, qui se compose de deux poinçons partiels, desquels celui qui forme la surface partielle qui est située le plus profondément entoure l'autre, selon une forme annulaire, le mouvement relatif des poinçons partiels étant à cette occasion limité dans les deux directions par des butées et au moins le poinçon partiel intérieur étant soumis à une force qui le pousse vers le bas, caractérisé en ce que le moule est conformé en un châssis de moulage (9) qui est soulevable relativement à une table de moulage (8), que le poinçon partiel (15) de forme annulaire, les parois latérales et le poinçon partiel (16) intérieur forment le fond une tête de poinçon en forme de caisson, que des broches de guidage (17), qui sont fixées sur le poinçon partiel (16) intérieur, traversent le plafond (14) de la tête de poinçon et que les ressorts de pression (18) entourant les broches de guidage (17) sont tendus entre le plafond (14) et le poinçon partiel (16) intérieur.
2. Dispositif de fabrication de briques en béton ou similaire, en particulier de pavés de béton et de briquettes à gazon, dont le côté supérieur possède des surfaces partielles de différentes hauteurs, avec un poinçon adapté dans une forme et guidé de manière mobile par rapport à celle-ci, qui se compose de deux poinçons partiels, desquels celui qui forme la surface partielle qui est située la plus profondément entoure l'autre, selon une forme annulaire, le mouvement relatif des poinçons partiels étant à cette occasion limité dans les deux directions par des butées et au moins le poinçon partiel intérieur étant soumis à une force qui le pousse vers le bas, caractérisé en ce que le moule est conformé en un châssis de moulage (30) qui est soulevable relativement à une table de moulage (46), que le poinçon partiel (15' ; 33) de forme annulaire est relié à une première surcharge (11' ; 43), par des tiges (21 ; 35) et que le poinçon partiel intérieur (16' ; 42) porte une deuxième surcharge (22 ; 43), qui est guidée sur les tiges (21 ; 35).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que des organes de maintien (38) sont prévus, qui fixent automatiquement le poinçon intérieur (42) de manière immobile sur le poinçon partiel (33) de forme annulaire, dans sa position supérieure, et que des dispositions sont prises, afin de desserrer les organes de maintien (38) ; après que la table de moulage (46) ait été éloignée et remplacée par une autre surface d'appui et avant que le mouvement en avant du poinçon partiel (38) de forme annulaire ne commence, lors du démoulage.
4. Dispositif selon la revendication 3, caractérisé en ce que les organes de maintien (38) situés sur le poinçon partiel de forme annulaire (33, 34, 35, 36) sont des organes de verrouillage, qui se placent automatiquement dans la position de verrouillage.
5. Dispositif selon la revendication 4, caractérisé en ce que des nez de manoeuvre (32) sont prévus sur le châssis de moulage (30), pour desserrer les organes de verrouillage (38) lors de la remontée du châssis de moulage (30), relativement au poinçon partiel (33) de forme annulaire.
EP84102419A 1983-03-11 1984-03-07 Dispositif pour fabriquer des articles moulés en béton ou analogue Expired EP0118872B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102419T ATE36483T1 (de) 1983-03-11 1984-03-07 Vorrichtung zur herstellung von formlingen aus beton oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8307078U 1983-03-11
DE19838307078U DE8307078U1 (de) 1983-03-11 1983-03-11 Vorrichtung zur herstellung von formlingen aus beton oder dergleichen

Publications (3)

Publication Number Publication Date
EP0118872A2 EP0118872A2 (fr) 1984-09-19
EP0118872A3 EP0118872A3 (en) 1986-01-02
EP0118872B1 true EP0118872B1 (fr) 1988-08-17

Family

ID=6750982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102419A Expired EP0118872B1 (fr) 1983-03-11 1984-03-07 Dispositif pour fabriquer des articles moulés en béton ou analogue

Country Status (5)

Country Link
US (1) US4545754A (fr)
EP (1) EP0118872B1 (fr)
AT (1) ATE36483T1 (fr)
CA (1) CA1246327A (fr)
DE (2) DE8307078U1 (fr)

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EP0408447A1 (fr) * 1989-07-13 1991-01-16 Groupe Permacon Inc. Système de bordures préfabriquées
DE4212702A1 (de) * 1992-04-16 1993-10-21 Schwenk Baustoffwerke Kg E Verfahren und Vorrichtung zur Herstellung von Stein-Verbundplatten
US5612065A (en) * 1994-03-04 1997-03-18 Rampf Formen Gmbh Apparatus for producing moldings from, in particular, concrete
DE19537077A1 (de) * 1995-10-05 1997-04-10 Rampf Formen Gmbh Mehrkammerform und Verfahren zur maschinellen Herstellung von Betonformteilen
DE29714044U1 (de) * 1997-08-06 1997-10-30 Rampf Formen Gmbh Form zur maschinellen Herstellung von Betonsteinen
US6093012A (en) * 1995-10-05 2000-07-25 Rampf Formen Gmbh Form for manufacturing concrete form components by machine
DE10326126A1 (de) * 2002-12-23 2004-07-15 Rampf Formen Gmbh Vorrichtung zur Herstellung von Formsteinen
CN110757623A (zh) * 2019-12-19 2020-02-07 兰溪洛利机械设备有限公司 一种陶瓷粉末定量干压成型设备

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DE4447062A1 (de) * 1994-12-29 1996-07-04 Rampf Formen Gmbh Mehrkammerform zur maschinellen Herstellung von Formkörpern aus Beton
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US7575700B2 (en) * 2005-03-01 2009-08-18 Pampf Molds Industries, Inc. Apparatus and method for a mold alignment system
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DE102005058403B4 (de) * 2005-12-07 2012-03-22 Kobra Formen Gmbh Vorrichtung zur Herstellung von Betonformsteinen und Formensystem
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WO2008055504A1 (fr) * 2006-11-10 2008-05-15 Kvm Industrimaskiner A/S Système de moule de béton avec plaques de pression et parties de base réduisant l'usure du moule
US8182260B2 (en) 2007-06-25 2012-05-22 Rampf Molds Industries, Inc. Apparatus and method for forming tapered products
EP2268466B1 (fr) * 2008-03-20 2013-11-20 Ness Inventions, Inc. Système et procédé de fabrication de blocs de maçonnerie
US20090297267A1 (en) * 2008-06-02 2009-12-03 B Green Innovations, Inc. Recycled tire paver blocks
CA2678960A1 (fr) * 2009-04-16 2010-10-16 Greenpath Eco Group Inc. Ensemble de pavage et methode de pose
US8075221B2 (en) * 2009-11-12 2011-12-13 Hortech, Inc. Paver assembly
US8794956B2 (en) * 2011-07-27 2014-08-05 Paul Adam Mold system for forming multilevel blocks
JP6413135B2 (ja) * 2014-07-23 2018-10-31 株式会社安藤・間 固化ブロック製造装置、及び固化ブロック製造方法
DE102014113756A1 (de) * 2014-09-23 2016-03-24 Kobra Formen Gmbh Vorrichtung zur Herstellung von Betonformteilen
CN106978899B (zh) * 2017-05-17 2022-10-21 浙江宝杰环保科技有限公司 方便清洗的合金模板

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US4168140A (en) * 1976-06-09 1979-09-18 Fontana John D Apparatus for producing a simulated brick construction member
DE2728630A1 (de) * 1977-06-24 1979-01-11 Netzsch Maschinenfabrik Presswerkzeug zum herstellen keramischer formlinge aus pulverfoermiger masse
EP0060961B1 (fr) * 1981-03-25 1984-05-09 Rolf Scheiwiller Pierre à paver et dispositif pour sa fabrication

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001984A1 (fr) * 1985-09-26 1987-04-09 Lema S.R.L. Moule speculaire pour la production de tuiles ceramiques avec entretoises, la tuile etant placee avec sa surface exposee orientee vers le haut
EP0408447A1 (fr) * 1989-07-13 1991-01-16 Groupe Permacon Inc. Système de bordures préfabriquées
DE4212702A1 (de) * 1992-04-16 1993-10-21 Schwenk Baustoffwerke Kg E Verfahren und Vorrichtung zur Herstellung von Stein-Verbundplatten
US5612065A (en) * 1994-03-04 1997-03-18 Rampf Formen Gmbh Apparatus for producing moldings from, in particular, concrete
DE19537077A1 (de) * 1995-10-05 1997-04-10 Rampf Formen Gmbh Mehrkammerform und Verfahren zur maschinellen Herstellung von Betonformteilen
US6093012A (en) * 1995-10-05 2000-07-25 Rampf Formen Gmbh Form for manufacturing concrete form components by machine
DE29714044U1 (de) * 1997-08-06 1997-10-30 Rampf Formen Gmbh Form zur maschinellen Herstellung von Betonsteinen
DE10326126A1 (de) * 2002-12-23 2004-07-15 Rampf Formen Gmbh Vorrichtung zur Herstellung von Formsteinen
CN110757623A (zh) * 2019-12-19 2020-02-07 兰溪洛利机械设备有限公司 一种陶瓷粉末定量干压成型设备
CN110757623B (zh) * 2019-12-19 2020-11-27 牧雅阀门有限公司 一种陶瓷粉末定量干压成型设备

Also Published As

Publication number Publication date
CA1246327A (fr) 1988-12-13
EP0118872A3 (en) 1986-01-02
DE8307078U1 (de) 1984-03-22
EP0118872A2 (fr) 1984-09-19
US4545754A (en) 1985-10-08
ATE36483T1 (de) 1988-09-15
DE3473424D1 (en) 1988-09-22

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