EP1849590B1 - Presse - Google Patents

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Publication number
EP1849590B1
EP1849590B1 EP06009002.4A EP06009002A EP1849590B1 EP 1849590 B1 EP1849590 B1 EP 1849590B1 EP 06009002 A EP06009002 A EP 06009002A EP 1849590 B1 EP1849590 B1 EP 1849590B1
Authority
EP
European Patent Office
Prior art keywords
press
plate
die
guide
holding plate
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.)
Not-in-force
Application number
EP06009002.4A
Other languages
German (de)
English (en)
Other versions
EP1849590A1 (fr
Inventor
Udo Baltruschat
Holger Behns
Carsten Jordt
Jan Naeve
Thomas Pannewitz
Martin Plucinski
Harald Römer
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.)
Fette GmbH
Original Assignee
Fette 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 Fette GmbH filed Critical Fette GmbH
Priority to EP06009002.4A priority Critical patent/EP1849590B1/fr
Priority to US11/734,527 priority patent/US7726961B2/en
Publication of EP1849590A1 publication Critical patent/EP1849590A1/fr
Application granted granted Critical
Publication of EP1849590B1 publication Critical patent/EP1849590B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B30B11/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
    • B30B15/0041—Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides

Definitions

  • the invention relates to a press for producing dimensionally stable compacts of powder material according to claim 1.
  • Presses for the production of dimensionally compact compacts of powder material basically have a die, at least one upper and at least one lower punch, which compress the powder material in the cavity of the die from opposite sides.
  • Upper and lower stamp are z. B. connected to the plunger or the piston rod of a hydraulic cylinder, which are mounted on the press frame.
  • the powder material is introduced into the die bore with a suitable filling device, the position of the lower punch normally defining the filling level or the filling volume. After pressing the material, the compact is removed from the die bore.
  • the pressing tools are usually not attached directly to the hydraulic adjusting drives, but via so-called.
  • Adapters For example, the die is mounted on a die holding plate, which - if movable - in turn is connected by means of force transmission elements with an adjustment.
  • upper and lower punches which are attached to corresponding holding plates.
  • different pressing tools can be installed in an existing press.
  • the pressing force is measured to determine the maximum force with which the powder is compressed.
  • the Preßkraftverlauf the tools over the way or over time during the pressing process is helpful.
  • Another parameter is the position of upper and lower punches with respect to a reference, which is usually formed by the upper edge of the die.
  • a reference which is usually formed by the upper edge of the die.
  • suitable measuring systems the position of the tools on their adapters can indeed be measured, without a correction over the respective temperature and pressing force, the position determinations are not sufficiently accurate enough.
  • Out DE 102 54 656 B4 a typical hydraulic press has become known in which a die holding plate and a plurality of stamp carriers (adapters) are mounted in the press frame so as to be adjustable via hydraulic drives.
  • the known press support devices are provided which support the punch carrier in press end position relative to the main body of the press frame.
  • Out DE 3142126 B1 is a press for the production of stepped dimensionally pure Pulverpreßlingen made of ceramic material known in the lower punch bearing receiving plates are all hydraulically movable from a base plate and sit in the press end position as receiving plates on adjustable mechanical stops of the base plate.
  • the receiving plates are for ejecting the compacts after removal of the die and free coming into contact with the die in contact surface of the compact together in each case until the coming of the next contact surface gradually ACfahrbar.
  • the counterforce or support force is formed by mechanical stops in both presses.
  • Out DE 103 00 722 B3 has become known a press in which an upper and a lower carriage for the attachment of an upper and lower punch on a guide column are guided vertically.
  • the guide column is attached to a frame table on which the die holding plate is mounted.
  • a wear-free guidance of the holding plates takes place in that via an angle compensation element and a lateral compensation element is a connection of the carriage to the hydraulic drive.
  • the invention has for its object to provide a press for producing dimensionally stable compacts of powder material, which allows the lowest possible position determination of the tools.
  • a holder for a single measuring ruler in the vertical direction is decoupled from the press frame.
  • the measuring ruler is e.g. attached to a decoupled from the press frame vertical guide for the holding plates.
  • the holder or the vertical guide has its own thermally induced changes in length, these must be taken into account in the measured position values, changes in length of the press frame, however, in particular due to compressive forces, on the other hand have no effect on the measuring ruler.
  • the distances of the holding plates are also largely without significant temperature influences.
  • the measuring ruler is fixed only in the amount of a reference plane for the pressing tools, for example, in the amount of a clamping surface for the die on the die support plate.
  • the thermal fixed point is naturally in the middle of a length measuring system. If several of these are provided, there will be a change in direction of the linear expansion when the measuring slide passes through this fixed point.
  • only one fixed point is provided, namely in the reference plane.
  • the measuring system according to the invention can be used for different operating modes of a press, regardless of whether the ejection or exhaust method is used.
  • the vertical guide is formed by a vertical guide column, which is arranged eccentrically with respect to the Hauptpreßachse in the press frame and having two parallel vertical guide tracks for holding plates.
  • the invention provides that the lower end of the guide column is fastened together with a lower adjustment on the press frame and fixed in all directions and the upper end of the guide column is fixed only in the horizontal direction on the press frame, while vertical relative movements of guide column and press frame are allowed.
  • the guideways are formed according to a further embodiment of the invention of preferably parallel in cross-section dovetail guide rails which are fixed to the one-piece guide column and guided on the guide rails carriages, with each of which a support plate is connected.
  • an embodiment of the invention provides that the upper adjustment sits positively in an upper bearing plate, which in turn is bolted to an upper connecting plate of the press frame.
  • An alignment plate is connected to the upper end of the guide column,
  • bearing plate and alignment plate have a positive connection such that they are only horizontally fixed to each other.
  • the lower adjustment drive sits positively in a lower bearing plate and the guide column is based on this bearing plate.
  • Bearing plate and alignment plate preferably have at least one pair of aligned bores, each receiving a dowel.
  • Holding plates, tools, vertical guide and measuring ruler are naturally subjected to elongations as a function of the prevailing temperatures. For an exact measurement of the position of the lower and upper punches or of the die, therefore, these heat-related changes in length must be taken into account. A direct measurement of the upper end of the lower punch or the lower end of the upper punch is naturally excluded. Their position can therefore only be determined by the position of the holding plates.
  • An embodiment of the invention provides that the pressing tools and / or the holding plates and / or the vertical guide and / or the measuring ruler are associated with temperature sensors and a computer is provided, in which the position signals of the ruler and the measuring signals of the temperature sensors are input and the computer taking into account the coefficients of thermal expansion of the materials for the parts detected in their temperature, lengths and thus the position values of the pressing tools are corrected in accordance with the temperature values.
  • the pressing force also deforms the pressing tools. It is therefore advantageous according to an embodiment of the invention, when measured by means of Kraftmeßgliedem, the forces exerted on the pressing tools forces and the measured values are given in the computer.
  • the calculator corrects as required the spring core lines of the pressing tools the measured values with the measuring ruler.
  • a bearing plate 10 can be seen, on which a guide column 12 is supported by a substantially rectangular or square cross-section.
  • the guide column 12 is preferably formed in one piece and may also be integrally formed with the bearing plate 10.
  • the vertical parallel guide rails 14, 16 store guide carriages 18, 20, 22, 24, 26, 28 and 30, 32 which are horizontal, axial spaced holding plates 34 to 40 are mounted.
  • the holding plates are constructed substantially the same and have T-shape in section.
  • the upper holding plate 34 is used for clamping a top punch (not shown)
  • the holding plate 36 is a die holding plate and is used for clamping a die
  • the lower holding plates 38, 40 are used for clamping Unterstkovn.
  • the holding plates 34 to 40 can with a in FIG. 1 not shown upper and lower hydraulic drive are coupled for the purpose of vertical adjustment along the guide rails 14, 16. This will be discussed below.
  • the lower holding plates 38, 40 have openings 42, 44 for the passage of power transmission elements of a lower hydraulic drive to the respective overlying holding plate, ie in the present case the die holding plate 36 and the holding plate 38th
  • a horizontal alignment plate 46 is fixed, which has two holes 48 near the free end.
  • a measuring ruler 47 is mounted, slide on the Meßschlitten 48, 50, 52, 54.
  • the measuring carriages 48 to 54 are each coupled to a holding plate 34 to 40. With the help of the measuring slide 48 to 54 and the measuring ruler 47, the position of the holding plates 34 to 40 is determined and thus the position of the pressing tools, not shown.
  • FIGS. 2 and 3 is the arrangement of in FIG. 1 shown unit indicated in a press frame.
  • FIGS. 2 and 3 shows a press frame four square, vertical support columns 56, which are connected to each other in the upper region by an upper connecting plate 58 and in the lower region by a connecting plate 60.
  • the connecting plates 58, 60 which extend horizontally, have circular openings 62 and 64, respectively.
  • the lower bearing plate 10 has a circular opening 66 in which a lower hydraulic drive 68 is positively inserted.
  • the bearing plate 10 is screwed into the opening of the connecting plate 60.
  • the guide column 12 is supported on a radial projection 70 of the bearing plate 10 and is screwed thereto.
  • An upper bearing plate 72 positively receives an upper hydraulic drive 74.
  • the bearing plate 72 can be screwed into the recess of the upper connecting plate 58.
  • the bearing plate 72 has two bores, one of which is shown at 76. They are aligned to the holes 48 of the alignment plate 46.
  • dowel pins can be inserted, of which one at 78 in FIG. 2 is shown. This makes it possible to position the bearing plate 72 horizontally with respect to the alignment plate 46 and thereby also bring the axis of the upper hydraulic drive 74 in alignment with the axis of the lower hydraulic drive 68, whereby a common vertical axis 73 is achieved. In the vertical direction can be allowed between the guide column 12 and the frame, here represented by the columns 56 and the connecting plates 60, 58, a relative movement.
  • FIGS. 4 and 5 is the arrangement after FIG. 2 indicated schematically. With FIG. 2 are equal parts in the FIGS. 4 and 5 provided with the same reference numerals. It can also be seen a die 102 on the die support plate 36, an upper punch 104 on the upper support plate 34 and a lower punch 106 on the lower support plate 38. Upper and lower punches 104, 106 cooperate with the die 102.
  • the pressing tools are in the FIGS. 4 and 5 shown in a referencing position, wherein the upper edge of the die 102 is relevant for the referencing. Referencing sets the tool zero point of the system. Other tool parts refer to this zero point.
  • the thermal reference plane is the clamping plane of the support plate 36 for the die 102, ie the top of the die support plate 36, with which the Meßschlitten 50 cooperates. In this plane, the measuring ruler 47 is fixed to the column 12 at 108, and only in this plane.
  • the measurement of the tool lengths is not immediately possible, but - as mentioned - on the holding plates 34 to 38. Therefore, the temperature that is measured during referencing, must be included. A temperature measurement takes place at the points labeled "T", i. on the holding plates 34 to 38, upper punch 104 and lower punch 106 and also in the die 102. When measuring the tool lengths 1 during operation, therefore, the value determined during referencing must be drawn into the measured temperature. In addition, in pressing forces occur length changes, which are measured by means of load cells, sensors or the like. These values must also be taken into account for correcting the respective tool positions.
  • a computer is required in which the signal values measured by the measuring ruler 47 as well as the temperature values and force values are entered in order to calculate the respective actual lengths 1 for determining the position of the tools.
  • support members 120, 122 are provided, which are supported on the plate 10 and in turn support the die support plate 36 mechanically. They are arranged so that they can be rotated about a vertical axis to be positioned below or below the die support plate 36. If the die holding plate for the ejection method is stationary, the support members 120, 122 take the in FIG. 5 shown position. In the withdrawal method, however, the die holding plate 36 is movable.
  • a control computer 126 is indicated, in which the temperature values T are input by the individual sensors.
  • individual pressing force values P which are measured by Preßkraftmeßgliedern not shown, entered into the computer 126.
  • the measuring signals of the measuring carriages 48, 50 and 52 are finally fed into the computer on the measuring ruler 47, which determines the individual positions of the pressing tools by means of the lengths 1 for lower and upper punches 104, 106 and the die 102 taking into account the temperature values and the pressing force values. by which the length values have to be corrected.
  • corresponding position values P OS , P M and P US for the press tools are then determined for the purpose of controlling the hydraulic cylinders for the press tools.
  • FIG. 6 only the outputs for an upper and a lower hydraulic cylinder are indicated by HZ O and HZ U.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)

Claims (9)

  1. Presse pour la production de pièces embouties de forme stable à partir de matériau poudreux, comprenant un bâti de presse, une plaque de support de matrice (36) maintenant en tension une matrice, au moins une plaque de support de poinçon supérieur (34), au moins une plaque de support de poinçon inférieur (38,40), des entraînements ajustables pour la plaque de support des poinçons supérieur et inférieur et/ou la plaque de support de matrice, un guidage vertical dans le bâti de presse pour au moins la plaque de support des poinçons supérieur et inférieur et un dispositif de mesure pour mesurer la position de la plaque de support de poinçon supérieur, de la plaque de support de poinçon inférieur et/ou de la plaque de support de matrice, sur lesquelles sont montés des chariots de mesure, et une unique règle de mesure (47) contre laquelle sont guidés les chariots de mesure coopérant avec les plaques de support, caractérisée en ce que le guidage vertical est formé par une colonne de guidage verticale (12) qui est agencée de manière excentrique dans le bâti de presse et comprend deux coulisses verticales (14, 16) pour les plaques de support, l'extrémité inférieure de la colonne de guidage (12) conjointement à un entraînement ajustable inférieur (68) est montée sur le bâti de presse et est fixée dans toutes les directions, et l'extrémité supérieure de la colonne de guidage (12) est fixée seulement dans la direction horizontale sur le bâti de presse, pendant que des mouvements relatifs verticaux de la colonne de guidage (12) et du bâti de presse sont autorisés et une unique règle de mesure (47) est appliquée, au niveau de son point fixe thermique, c'est-à-dire au niveau de son centre longitudinal, contre le guidage vertical.
  2. Presse selon la revendication 1, caractérisée en ce que la règle de mesure (47) est fixée seulement à la hauteur d'un plan de référence (108) pour les outils de presse (104, 102, 106) sur le guidage vertical.
  3. Presse selon la revendication 2, caractérisée en ce que le plan de référence est la surface de serrage de la plaque de support de matrice (36) pour la matrice (102).
  4. Presse selon une des revendications 1 à 3, caractérisée en ce que les coulisses sont formées par des rails de guidage (14, 16) en queue d'aronde parallèles en coupe transversale qui sont fixés à la colonne de guidage d'un seul tenant (12), et sur les rails de guidage (14, 16) sont guidés des chariots de guidage (18 à 32) auxquels est reliée respectivement une plaque de support (34, 36, 38, 40).
  5. Presse selon une des revendications 1 à 4, caractérisée en ce que l'entraînement ajustable supérieur (74) repose par complémentarité de forme dans une plaque d'appui supérieure (72), qui est à son tour vissée sur une plaque de liaison supérieure (58) du bâti de presse, est reliée à l'extrémité supérieure de la colonne de guidage (12) d'une plaque d'alignement (46), la plaque d'appui (72) et la plaque d'alignement (46) pouvant être fixées l'une à l'autre horizontalement par une liaison de fermeture géométrique, l'entraînement ajustable inférieur (68) reposant par complémentarité de forme dans une plaque d'appui inférieure (10) et la colonne de guidage (12) s'appuyant sur la plaque d'appui inférieure (10).
  6. Presse selon la revendication 5, caractérisée en ce que la plaque d'appui supérieure (72) et la plaque d'alignement (46) comprennent au moins une paire d'alésages (76, 48) qui peuvent être alignés entre eux pour recevoir une goupille de serrage (78).
  7. Presse selon une des revendications 1 à 6, caractérisée en ce que des colonnes (56) du bâti de presse serrent un rectangle, de préférence un carré, et la colonne de guidage (12) est agencée dans une zone angulaire du rectangle et/ou du carré sur la face intérieure d'une colonne de bâti associée (56).
  8. Presse selon une des revendications 1 à 7, caractérisée en ce que des capteurs de température sont attribués aux outils de presse (104, 102, 106) et/ou aux plaques de support (34, 36, 38) et/ou au guidage vertical et/ou à la règle de mesure (47), et un ordinateur (126) est prévu dans lequel sont transmis les signaux de position de la règle de mesure (47) et les signaux de mesure des capteurs de température, et l'ordinateur (126), en tenant compte des coefficients de dilatation thermique des matériaux pour les pièces détectées dans leur plage de température, corrige les valeurs de position et/ou les valeurs de longueur des outils de presse (104, 102, 106) conformément aux valeurs de température.
  9. Presse selon la revendication 8, caractérisée en ce que les forces exercées sur les outils de presse (104, 102, 106) sont mesurées à l'aide des éléments dynamométriques et sont transmises à l'ordinateur (126), et l'ordinateur conformément aux courbes caractéristiques des ressorts des outils de presse (104, 102, 106) corrige les valeurs de position et/ou de longueur mesurées avec la règle de mesure (47).
EP06009002.4A 2006-04-29 2006-04-29 Presse Not-in-force EP1849590B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06009002.4A EP1849590B1 (fr) 2006-04-29 2006-04-29 Presse
US11/734,527 US7726961B2 (en) 2006-04-29 2007-04-12 Press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06009002.4A EP1849590B1 (fr) 2006-04-29 2006-04-29 Presse

Publications (2)

Publication Number Publication Date
EP1849590A1 EP1849590A1 (fr) 2007-10-31
EP1849590B1 true EP1849590B1 (fr) 2013-05-15

Family

ID=37387420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009002.4A Not-in-force EP1849590B1 (fr) 2006-04-29 2006-04-29 Presse

Country Status (2)

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US (1) US7726961B2 (fr)
EP (1) EP1849590B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013113665A1 (de) 2013-12-06 2015-06-11 Fette Compacting Gmbh Presse

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DE102010008986A1 (de) * 2010-02-24 2011-08-25 Dorst Technologies GmbH & Co. KG, 82431 Verfahren zur Pressparameteranpassung einer Keramik- oder Metallpulverpresse und Keramik- oder Metallpulverpresse zum Durchführen des Verfahrens
DE202012100785U1 (de) * 2012-03-06 2012-05-09 Stratos Gmbh Christoph Staroske Einrichtung zur spanlosen Formgebung/Umformung eines flächigen Werkstücks
WO2014061457A1 (fr) 2012-10-15 2014-04-24 シャープ株式会社 Dispositif de moulage, unité à dispositif de moulage et procédé de moulage
WO2015178267A1 (fr) 2014-05-19 2015-11-26 新日鐵住金株式会社 Procédé de moulage à la presse et moule métallique pour moulage à la presse
DE102016120195A1 (de) * 2016-10-24 2018-04-26 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung
CH716048B1 (de) * 2019-04-09 2024-02-15 Dietmar Kramer Dr Sc Techn Eth Phd Verfahren sowie eine Messeinrichtung zum Ausmessen von Utensilien für Pressen.
CN113370571B (zh) * 2021-07-06 2023-06-06 中国科学技术大学 一种棉纤维形状压缩机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013113665A1 (de) 2013-12-06 2015-06-11 Fette Compacting Gmbh Presse
EP2889129A2 (fr) 2013-12-06 2015-07-01 Fette Compacting GmbH Presse
EP2889129A3 (fr) * 2013-12-06 2015-11-25 Fette Compacting GmbH Presse

Also Published As

Publication number Publication date
US20070251286A1 (en) 2007-11-01
US7726961B2 (en) 2010-06-01
EP1849590A1 (fr) 2007-10-31

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