EP0077897B2 - Presse pour fabriquer des articles pressés gardant la mesure à partir de matière pulvérulente - Google Patents

Presse pour fabriquer des articles pressés gardant la mesure à partir de matière pulvérulente Download PDF

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Publication number
EP0077897B2
EP0077897B2 EP82107540A EP82107540A EP0077897B2 EP 0077897 B2 EP0077897 B2 EP 0077897B2 EP 82107540 A EP82107540 A EP 82107540A EP 82107540 A EP82107540 A EP 82107540A EP 0077897 B2 EP0077897 B2 EP 0077897B2
Authority
EP
European Patent Office
Prior art keywords
press
die
plate
baseplate
piston
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 - Lifetime
Application number
EP82107540A
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German (de)
English (en)
Other versions
EP0077897B1 (fr
EP0077897A3 (en
EP0077897A2 (fr
Inventor
Hubert Dipl.-Ing. Schaidl
Dietmar Herren
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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Application filed by DORST Technologies GmbH and Co KG filed Critical DORST Technologies GmbH and Co KG
Publication of EP0077897A2 publication Critical patent/EP0077897A2/fr
Publication of EP0077897A3 publication Critical patent/EP0077897A3/de
Application granted granted Critical
Publication of EP0077897B1 publication Critical patent/EP0077897B1/fr
Publication of EP0077897B2 publication Critical patent/EP0077897B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space

Definitions

  • the invention relates to a press with the preamble of claim 1.
  • a base plate and a die-holding plate are provided, which parts are formed from the die-holding plate and a lower coupling plate , by means of tie rods connected framework of a press part, which can be connected as an interchangeable unit through the lower coupling plate on the lower bear of the press.
  • the interchangeable unit can be connected to the upper bear of the press by means of an upper coupling plate which is displaceable relative to the die holding plate.
  • a known press of this type (DE-OS 20 41 923) has several lower punches, which are supported on corresponding piston-cylinder systems on a base plate of the frame of the press.
  • This arrangement allows the lower punches to be driven in a controlled manner and, in particular, to release the compact gradually over the raising lower punches after the die has been removed. This enables damage-free demolding of the compact.
  • base plate and the piston-cylinder systems used to move the lower punches are direct components of the press itself, with the result that when the molded parts to be manufactured are set up, the press itself has to be set up, and thus it the press has considerable downtime. This affects the production process considerably, considering the extremely high hourly output of these presses.
  • the object of the invention is to provide a press part which is dimensioned and designed so that it can be installed in an adapter via coupling plates in a press.
  • the total pressing forces are concentrated within a framework, which is essentially composed of a base plate, the die holding plate and a lower coupling plate, connected by tie rods. Because the machine parts supporting the lower rams are supported in the pressing position on fixed stops of the framework, the piston-cylinder systems used for the displacement of the machine parts can be dimensioned accordingly.
  • the press part can be connected to the lower and upper bears of a press using suitable coupling elements.
  • FIG. 4 the representation of the intermediate plate and the base plate has been rotated by 90 ° in order to make otherwise invisible parts visible.
  • the lower coupling plate 1 is coupled via a connector 2 with a T-piece 3, which is part of the machine frame.
  • the lower coupling plate 1 is firmly connected to a die holding plate 5 via the tie rods 4.
  • the connector 6 is inserted on the movable part, ie on the upper punch of the press and with the upper coupling lungsplatte 7 connected so that it is connected in this way to the upper punch of the press.
  • the upper coupling plate 7 is slidably guided in the die holding plate 5 via guide rods 8.
  • the guide rods penetrate the mounting plate 9 through openings which are kept correspondingly large.
  • the receiving plate 9 receives one or more stamps. 4 to 6, the stamp 10 is fastened to the mounting plate 9 via a bridge 11 with the aid of a retaining ring 12. 3, piston rods 13 are fastened to the mounting plate 9, the pistons 14 of which can be displaced in the hydraulic cylinder 15 in the base plate 16.
  • a further punch 22 sits on an intermediate plate 20 over a bridge 21 similar to bridge 11, which is also fastened to bridge 21 with the aid of a retaining ring 23.
  • the piston 26 is fixed in the intermediate plate 20.
  • the rotatable cap 29 thus, like the rotatable cap 19, enables the end position of the press to be changed.
  • a further piston 30 is arranged in the base plate 16 and is displaceable in a cylinder 31.
  • This piston 30 is designed as a hollow piston and has a central opening 32 through which an element to be explained later will be passed.
  • a further guide element 33 with a thread 34 sits on the base plate 16, on which a rotatable cap 35 with an internal thread is arranged, which serves for changing the press end position of the piston 30 which is displaceable in the cylinder 31.
  • the stop takes place with the aid of a receiving plate 36 which is fixedly arranged on the piston rod 37 of the piston 30.
  • an extension piece 39 is seated on the receiving plate 36, on which a further punch 41 is fixed with the aid of a retaining ring 40.
  • the stamp 41 is the innermost stamp.
  • the three-part stamp arrangement in the exemplary embodiment can be extended or reduced, while maintaining this principle, into a stamp arrangement with more or less than three stamps, or can be selected so that the gradation on the molded body 42 (FIG. 6), which is obtained from the filled-in molding compound 43 ( Fig. 4) is produced, vice versa, ie runs from the inside out. Any other structure, insofar as it can be reached with stamps, can be realized according to this principle.
  • a central pin 44 is fastened directly or with the aid of a collar 45 (FIGS. 4 to 6). Then it moves with the coupling plate 1. The center pin 44 continues upwards until it is flush with the die holding plate 5.
  • the central pin 44 can, however, also pass freely through the opening 47 in the lower coupling plate 1 and be coupled to a piston 48 which can be actuated in a hydraulic cylinder 49 which is arranged in the T-piece 3. This means that it can be moved independently of the movement of the die holding plate 5.
  • a scale 52 is provided for the piston 30 in the cylinder 31, which slides in a bore 53 in the base plate 16.
  • the scale 52 is firmly attached to the piston 30 and thus follows its movement.
  • the scale 52 allows any measurement of the path of the associated piston 30 relative to the base plate 16, so that it is possible to electronically evaluate the determined value and to supply it to a corresponding control device.
  • the scale With each path length unit, for example 1 / 100th of a millimeter, the scale triggers a pulse in the electronic control, the machine being controlled for the next locomotion after a certain pulse quantity has been reached.
  • this next movement consists in the relative movement between the base plate 16 and the intermediate plate 20 and is tracked with the aid of the measuring rod 54, which dips into the bore 55 in the intermediate plate 20.
  • the center pin 44 is coupled to the piston 48, it can also be brought into any desired position relative to the die holding plate 5 with the aid of a scale (not shown) and this at a preselected speed. It can be used to influence the powder flow regardless of temperature changes and friction conditions. This solves the problem resulting from the fact that the punches 10, 22 and 41 and the central pin 44 heat up in the course of the sequence of the pressing processes and the frictional relationships between the molded body and them change during the compression process and thus to an uncontrollable powder flow with resulting changes in density in the pressed molded body. This can now be successfully counteracted by a controlled movement of the stamp and the central pin from the filling to the pressing position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Powder Metallurgy (AREA)

Claims (6)

1. Presse pour la fabrication de pièces comprimées, dimensionnellement stables, à partir de produits pulvérulents, qui comprend une plaque (5) de maintien d'une matrice, au moins un poinçon supérieur (58) et une plaque de base (16) sur laquelle des parties de machine en forme de plaque, (9 ; 11 ; 20 ; 21 ; 36) qui portent des poinçons inférieurs 10, 22, 41) sont montées sur paliers par l'intermédiaire de systèmes à cylindre et piston (13, 14, 15 ; 24, 25, 26 ; 30, 31, 37) et qui pour l'éjection de la pièce comprimée, après retrait de la matrice et dégagement des surfaces de la pièce comprimée qui sont en contact avec la matrice, peuvent être soulevées graduellement 'ensemble jusqu'au dégagement de la surface de contact la plus voisine, tandis que les systèmes à cylindre et piston (13, 14,15;24,25,26; 30, 31, 37) sont montés à l'intérieur de la plaque de base et que la plaque de base (16) et la plaque (5) de maintien de la matrice font partie du cadre d'une partie de presse qui est assemblée à partir de la plaque de maintien (5) de la matrice et d'une plaque d'accouplement inférieure (1) au moyen de tirants (4), et qui constitue une unité remplaçable reliée par la plaque d'accouplement inférieure (1) au bloc inférieur de la presse, et par une plaque d'accouplement (7) supérieure, guidée de manière à pouvoir se déplacer, par l'intermédiaire de tiges de guidage (8), dans la plaque (5) de maintien de la matrice, au bloc supérieur de la presse, et de manière que les parties de machine (9 ; 11 ; 20 ; 21 ; 36) s'appliquent en position de compression, sur des butées fixes (19, 29, 35) par rapport au cadre, qui sont montées sur une plaque de base (16) prenant fermement appui dans la presse.
2. Presse selon la revendication 1, caractérisée en ce que les butées fixes sont constituées par des capuchons (19, 29, 35) qui sont vissés sur les extrémités des douilles de guidage (17, 27, 33) dans lesquelles sont guidées les tiges de piston (13, 26, 37) des systèmes de cylindres et pistons (13, 14, 15 ; 24, 25, 26 ; 30, 31, 37).
3. Presse selon l'une des revendications 1 ou 2, caractérisée en ce qu'à chaque partie de machine (9, 20, 36) est associé un organe de mesure (52, 54, 56) qui est fixé sur la plaque de base (16), et qui sert de palpeur de trajet que les parties de machine (9, 20, 36) effectuent pour se placer dans la position de remplissage et d'éjection.
4. presse selon la revendication 3, caractérisée en ce que les organes de mesure ont la forme de réglettes (52, 54, 56) qui s'engagent dans des alésages (53, 55, 57) ménagés dans la plaque de base (16), dans une plaque intermédiaire (20) ou dans une plaque réceptrice (9).
5. Presse selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'elle comporte une cheville médiane (44) qui accompagne le mouvement de la plaque (5) de maintien de la matrice, et qui peut être commandée avec une vitesse indépendante de la plaque (5) de maintien de la matrice.
6. Presse selon la revendication 5, caractérisée en ce qu la cheville médiane (44) est fixée au piston (48) d'un vérin hydraulique (49) qui est accouplé à une plaque d'accouplement inférieure (1).
EP82107540A 1981-10-23 1982-08-18 Presse pour fabriquer des articles pressés gardant la mesure à partir de matière pulvérulente Expired - Lifetime EP0077897B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813142126 DE3142126A1 (de) 1981-10-23 1981-10-23 "presse zum herstellen masshaltiger presslinge aus pulverfoermigem material"
DE3142126 1981-10-23

Publications (4)

Publication Number Publication Date
EP0077897A2 EP0077897A2 (fr) 1983-05-04
EP0077897A3 EP0077897A3 (en) 1984-11-28
EP0077897B1 EP0077897B1 (fr) 1987-04-15
EP0077897B2 true EP0077897B2 (fr) 1993-08-25

Family

ID=6144719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107540A Expired - Lifetime EP0077897B2 (fr) 1981-10-23 1982-08-18 Presse pour fabriquer des articles pressés gardant la mesure à partir de matière pulvérulente

Country Status (3)

Country Link
US (1) US4482307A (fr)
EP (1) EP0077897B2 (fr)
DE (1) DE3142126A1 (fr)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608852A (en) 1983-08-24 1986-09-02 Amada Company, Limited Press machine
DE3541387A1 (de) * 1985-11-22 1987-05-27 Netzsch Maschinenfabrik Presse zum herstellen von formlingen aus pulver- oder granulatfoermigen werkstoffen
AT384954B (de) * 1986-09-11 1988-02-10 Simmering Graz Pauker Ag Hochdruckgefaess mit stampfeinrichtung
ATE55086T1 (de) * 1987-05-07 1990-08-15 Graebener Theodor Pressensyst Presse, insbesondere zum herstellen masshaltiger presslinge aus pulverfoermigen werkstoffen, und verfahren zum betrieb einer solchen presse.
IT1221597B (it) * 1987-07-24 1990-07-12 Ugo Giannelli Apprecchiatura di stampaggio e sformatura di manufatti in cemento prodotti dalle presse
ATE61761T1 (de) * 1987-09-02 1991-04-15 Graebener Theodor Pressensyst Presse, insbesondere zum herstellen masshaltiger presslinge aus pulverfoermigen werkstoffen.
US4915890A (en) * 1987-09-17 1990-04-10 The Dow Chemical Company Casting process
US5034448A (en) * 1987-09-17 1991-07-23 The Dow Chemical Company Slip composition for whiteware articles
DE3829128A1 (de) * 1988-08-27 1990-03-08 Laeis Gmbh Verfahren zur herstellung von pressformteilen und vorrichtung zur durchfuehrung des verfahrens
DE3940192A1 (de) * 1989-02-02 1990-08-09 Gottfried Weber Hydraulische presse
DE3904617A1 (de) * 1989-02-16 1990-08-23 Didier Werke Ag Presse zum kaltformen von formmassen zu formkoerpern, insbesondere keramischen steinen
US5192560A (en) * 1989-03-07 1993-03-09 Canon Kabushiki Kaisha Variable mold apparatus
DE3909757A1 (de) * 1989-03-23 1990-09-27 Dorst Masch & Anlagen Presse mit einem in die presse einsetzbaren werkzeuggestell
DE3916774A1 (de) * 1989-05-23 1990-11-29 Anton Heggenstaller Verfahren und vorrichtung zum pressen eines biegesteifen balkenfoermigen formkoerpers aus pflanzlichen kleinteilen
DE3919821C2 (de) * 1989-06-15 1994-04-07 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen von maßhaltigen Preßlingen
DE4000423C2 (de) * 1990-01-09 1998-10-08 Dorst Masch & Anlagen Presse zur Herstellung maßhaltiger Preßlinge aus pulverförmigem Material
JPH07115233B2 (ja) * 1990-08-10 1995-12-13 株式会社ヨシツカ精機 粉末成形プレス
DE9203546U1 (de) * 1992-03-17 1993-07-22 Komage - Gellner & Co. Maschinenfabrik KG, 54427 Kell Vorrichtung zum Pressen von Formteilen aus einer feinkörnigen Masse
DE4227640A1 (de) * 1992-08-18 1994-02-24 Mannesmann Ag Presse zur Herstellung maßhaltiger Preßkörper
JP2980484B2 (ja) * 1993-06-14 1999-11-22 コータキ精機株式会社 ダイセット式粉末成形プレス機
WO1995014568A1 (fr) * 1993-11-24 1995-06-01 Stackpole Limited Matrice double a mise en phase
WO1995014567A1 (fr) * 1993-11-24 1995-06-01 Stackpole Limited Filiere double pour piece a contre-depouille
AT402375B (de) * 1994-10-14 1997-04-25 Kranzinger Norbert Verfahren und vorrichtung zum herstellen von hohlbausteinen
US6165400A (en) * 1996-05-09 2000-12-26 Stackpole Limited Compacted-powder opposed twin-helical gears and method
US6440357B1 (en) 1996-05-09 2002-08-27 Stackpole Limited Compacted-powder opposed twin-helical gears and method
GB2360825B (en) * 2000-03-30 2004-11-17 Formflo Ltd Gear wheels roll formed from powder metal blanks
DE10135523C2 (de) 2001-07-20 2003-07-31 Dorst Masch & Anlagen Presseneinrichtung zum Herstellen maßhaltiger Presslinge aus pulverförmigen Metall
DE10151858A1 (de) * 2001-10-24 2003-05-08 Dorst Masch & Anlagen Verfahren zum Einstellen bzw. Überwachen eines Pressen-Werkzeugs und Pressen-Werkzeug bzw. Pressen-Steuereinrichtung dafür
EP1472077A1 (fr) * 2002-01-15 2004-11-03 Hawk Precision Components Group, Inc. Outil de forage servant au compactage de materiaux particulaires
DE10254656B4 (de) * 2002-11-22 2005-10-13 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung zum Herstellen maßhaltiger Presslinge mit zentraler Stempelabstützung
DE10355963A1 (de) * 2002-12-02 2004-06-24 Mold-Masters Limited, Georgetown Hubbegrenzer für einen Nadelventilbetätigungsmechanismus
DE102005044759B4 (de) * 2005-09-20 2007-07-12 Sms Meer Gmbh Vorrichtung zum Herstellen eines Formteils
EP1849590B1 (fr) 2006-04-29 2013-05-15 Fette GmbH Presse
EP1849591B1 (fr) 2006-04-29 2016-02-03 Fette GmbH Presse
CN100410067C (zh) * 2006-07-14 2008-08-13 严培义 粉末成形机双上冲内冲调整机构
CN103072299B (zh) * 2012-12-25 2015-01-07 上海帮容环保科技有限公司 带有移动垫块的油压机
ES2955847T3 (es) 2018-02-26 2023-12-07 Osterwalder Ag Dispositivo de prensado para una prensa de polvo y un sistema de cambio de herramienta

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JPS599280B2 (ja) * 1980-09-09 1984-03-01 玉川機械株式会社 粉末成形プレスにおける浮動パンチ停止解放装置

Also Published As

Publication number Publication date
US4482307A (en) 1984-11-13
EP0077897B1 (fr) 1987-04-15
EP0077897A3 (en) 1984-11-28
EP0077897A2 (fr) 1983-05-04
DE3142126A1 (de) 1983-05-11
DE3142126C2 (fr) 1988-01-14

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