EP2441573B1 - Presse et procédé de fabrication d'un objet moulé en matériau poudreux - Google Patents

Presse et procédé de fabrication d'un objet moulé en matériau poudreux Download PDF

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Publication number
EP2441573B1
EP2441573B1 EP11183978.3A EP11183978A EP2441573B1 EP 2441573 B1 EP2441573 B1 EP 2441573B1 EP 11183978 A EP11183978 A EP 11183978A EP 2441573 B1 EP2441573 B1 EP 2441573B1
Authority
EP
European Patent Office
Prior art keywords
transverse
pressing direction
press
transfer device
force transfer
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
EP11183978.3A
Other languages
German (de)
English (en)
Other versions
EP2441573A2 (fr
EP2441573A3 (fr
Inventor
Martin Dupont
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.)
KOMAGE GELLNER MASCHF
Komage Gellner Maschinenfabrik KG
Original Assignee
KOMAGE GELLNER MASCHF
Komage Gellner Maschinenfabrik 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
Application filed by KOMAGE GELLNER MASCHF, Komage Gellner Maschinenfabrik KG filed Critical KOMAGE GELLNER MASCHF
Publication of EP2441573A2 publication Critical patent/EP2441573A2/fr
Publication of EP2441573A3 publication Critical patent/EP2441573A3/fr
Application granted granted Critical
Publication of EP2441573B1 publication Critical patent/EP2441573B1/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
    • B30B11/007—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a plurality of pressing members working in different directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/40—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by wedge means
    • 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 for producing a molded article of powdery material, which has a press die with a recess for receiving the material, at least one main punch for pressing the material in a main pressing direction and at least two transverse punches, in a cross-direction transverse to the main pressing direction in the recess are movable and for which a drive is provided, comprising a power transmission device which is movably mounted in a direction transverse to the transverse pressing direction and with which a driving force to the transverse punch is transferable.
  • the invention further relates to a method for pressing a molded article of powdery material.
  • a press which comprises two movable in the main pressing direction stamp and a die, which has an undercut, in which in a circular shape adjacent to each other and against each other slidably a plurality of transverse punches are arranged.
  • the transverse punches are arranged in the press die in such a way that, when one of the transverse punches moves by means of a drive mechanism, the other transverse punches are displaced relative to one another, so that a space provided for receiving the material to be pressed is reduced.
  • the CH 361 195 A describes a press having four lateral, wedge-shaped transverse stamping dies.
  • a pressing force is exerted by a main ram, the transverse punches are fixed relative to one in the press Frame, the oblique contact surfaces for the transverse punch has moved and thereby moved in the transverse pressing direction.
  • the GB 820,327 describes a device for pressing hollow bodies, which comprises four transverse punches. Two of the transverse dies, which face each other, are moved toward each other by transmitting a driving force thereto by means of a lever means. Two further transverse punches are slidably disposed between the two cross punches and are taken when acted upon by the driving force of the other cross punches, being displaced on a surface inclined to the transverse pressing direction.
  • a press that has an eccentric drive for each of the transverse punches, from the WO2007 / 019832 A2 known.
  • the DE 10 08 421 B describes a device for cold or hot forming of compacts of powder masses, which has radially projecting ridges or depressions relative to a cylindrical basic shape, wherein in a substantially circular mold radial compression jaws distributed over the circumference of the form, the radially adjustable by rotational movement of a cam so are that they can serve in their radial movement from outside to inside the shape of the compact used in the mold.
  • the invention has for its object to provide a press of the type mentioned, which is simpler compared to the known presses. According to the invention this object is achieved by a press having the features of claim 1 and a method having the features of claim 9.
  • transverse punches or at least some of the transverse punches can be moved with a single drive, it is no longer necessary to provide a separate drive for each transverse punch.
  • the design effort is less and the press can be produced inexpensively.
  • the moldings can be compressed more homogeneous, since when pressing on in each case a single drive to the moving with this drive cross stamps at the same time the same force is applied and they are always moved synchronously.
  • the transverse punches can be movable radially or, preferably in parallel, offset in the press die. While other directions are conceivable, the transverse punches according to the invention are movable perpendicular to the main pressing direction.
  • each transverse punch on a bearing body which is displaceable in a bearing housing in the respective transverse pressing direction, preferably along a guide.
  • the guide expediently comprises a provided on the bearing body and / or the bearing housing, preferably elongated, projection and provided on the bearing body or the bearing housing and the projection receiving, preferably in cross-section a negative mold of the projection having, in which the projection displaceable is.
  • the counter-holder of the transverse punch has a counter-surface parallel to the surface.
  • the power transmission device is expediently displaceable on the counterholder while moving the transverse punch in the direction opposite to the transverse pressing direction.
  • the surface is expediently tilted by 45 to 85 ° to the transverse pressing direction, preferably by 65 to 75 °, preferably by 60 °.
  • the more the surface is tilted to the transverse pressing direction the smaller is the quotient of the path traveled by the transverse punch to the path traveled by the power transmission device during movement of the power transmission device. Accordingly, the movement of the transverse punches can be controlled more precisely at larger angles.
  • the power transmission device and the transverse punch are connected to one another via a holding member which is attached to the power transmission device or on the transverse punch and slidably held on the transverse punch and / or on the power transmission device, that the transverse punch with its counter surface during movement of the power transmission device held on the surface.
  • the transverse punches are withdrawn after pressing by means of the power transmission device again from the press die. It is prevented that during demoulding of the molding from the press die of the transverse punch is damaged.
  • the power transmission device is expediently circular or, if appropriate, depending on the number of press punches used, a regular polygonal shape. For example, if four or six transverse punches used, the power transmission device may have a square or a regular hexagonal shape.
  • the drive expediently comprises a hydraulic cylinder and / or an electric servomotor.
  • the press is provided with a control unit with which a force to be applied to the transverse punches and / or a path to be traversed by the transverse punches can be set.
  • a measuring device preferably connected to the control unit, is also provided, with which the position of the power transmission device and / or the transverse punch can be determined.
  • no stops for the transverse punches must be provided.
  • the press die and the bearing housings are expediently attached to a support plate of the press, which is preferably fastened to a support device of the press, preferably a press table.
  • the press comprises a plurality of different power transmission devices, for example for different numbers of cross punches or pressing geometries, and the press is set up such that the power transmission devices can be optionally used.
  • a plurality of mounting positions for the transverse punches are provided on the support plate for the bearing housing.
  • the attachment positions may be e.g. be formed by threaded holes for screws, with which the transverse punches are attached to the support plate.
  • the transverse punches can optionally be arranged in different positions to the pressing die.
  • FIG. 1 illustrated part of a press shows a cylindrical die 1, in which a arranged in a main press x along the cylinder axis of the press die 1 recess 2 is provided and a powder guide 20 for filling the recess 2 with powder.
  • the pressing die 2 is provided with six recesses arranged in radial transverse pressing directions y and leading radially up to the recess 2, into which in each case a stamping part 14 projects from the transverse dies 3 arranged around the lateral surface of the pressing die 2.
  • Each transverse punch 3 comprises a slider 8 connected to the stamp member 14, which is mounted in a bearing housing 9 and is provided with an inclined surface 7 on its side opposite the stamp member 14.
  • the press die 2 and the bearing housings 9 of the transverse punches 3 are fastened to a support plate 21, to which a coaxial with the press die 2 arranged bearing ring 16 is further attached.
  • a collar 5 is slidably mounted in the direction of a cylinder axis of the die 2, provided on its inside with six guide surfaces 6 for rings 5 three attached to the support plate 22 hydraulic drives 4, which are connected via a screw rod 25 with the collar 5 , Furthermore, a measuring device 24 is provided on one of the hydraulic drives 4, with which the position of the adjusting ring 5 can be determined.
  • the measuring device 24 is connected to a control unit, not shown here, for controlling the transverse punches 3, with which a position, in which the transverse punches 3 are to be brought, and / or a transverse punches 3 to a molding to-direction of said cylinder axis a main punch 27, which is also fastened to the support plate 22 and a not shown here, an opposite to a pressing force generated by the main punch 27 opposite pressing force generating further main punch, from above into the recess 2 in the press die.
  • a control unit not shown here, for controlling the transverse punches 3, with which a position, in which the transverse punches 3 are to be brought, and / or a transverse punches 3 to a molding to-direction of said cylinder axis a main punch 27, which is also fastened to the support plate 22 and a not shown here, an opposite to a pressing force generated by the main punch 27 opposite pressing force generating further main punch, from above into the recess 2 in the press die.
  • Querst Zis 3 a foot 16 which is provided with holes through which the cross bar 3 is fixed with screws to the support plate 21. It also has two elongate recesses 11 into which an elongate projection 10 of the slider 8 engages. The projection 10 and the recess 11 form a guide for a movement of the slider 8 in the transverse pressing direction y in the bearing housing 9.
  • an elongated recess 19 is provided parallel to the counter surface 7, in the displaceable a holding member 12 is mounted.
  • the holding member 12 is provided with threaded holes in the in Fig. 6 shown screws 28 which are held on the adjusting ring 5.
  • the adjusting ring 5 is moved by means of the hydraulic drives 4. If the adjusting ring 5 is displaced upward, the slides 8 are displaced in the bearing housing 9 against a force of the springs 15 and guided by the projections 10 in the recesses 11 in the direction of the cylinder axis of the pressing die 1. In this case, the holding member 12 slides in the recess 19 in the slide 8 upwards. If the adjusting ring 5 is moved downwards, the holding member 12, supported by the force of the springs 15, pulls the slider 8 in the opposite direction, thereby removing the stamping part 14 from the pressing die 2.
  • the press according to the invention can be used in various ways.
  • the stamp parts 14 can be introduced into the recess 2 of the press die 1 even before the beginning of a pressing operation, then act like a mold for shaping internal contours in the pressed article and are no longer moved during the pressing process, but only after the pressing process has been completed Removal of the molding pulled out of the recess 2.
  • the punch parts 14 can also be used for pressing in the transverse pressing directions y during the pressing process, in that a force of the hydraulic drives 4 is transmitted to the transverse punches 3 via the adjusting ring 5.
  • the pressing force to be applied with the transverse punches 3 or the position into which the transverse punches 3 are to be brought depends on the angle which the inclined surface 6 or the counter surface 7 has to a movement direction of the transverse punches 3.
  • the greater the angle the lower the path of the transverse punch 3 when displacing the adjusting ring 5 in relation to a displacement path of the adjusting ring 5 back.
  • the path to be traveled with the stamp member 14 or the force to be applied for pressing can be controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Claims (9)

  1. Presse pour produire une ébauche à partir d'un matériau sous forme de poudre, qui comprend une matrice de presse (1) avec un évidement (2) pour recevoir le matériau à presser, au moins un poinçon de presse principal pour presser le matériau dans une direction de pressage principale (x), et aux moins deux poinçons transversaux (3), qui sont déplaçables dans l'évidement (2) dans une direction de pressage transversale (y) transversale à la direction de pressage principale (x), et pour lesquels il est prévu un entraînement (4) qui inclut un dispositif de transmission de force (5), lequel est monté déplaçable dans une direction transversale à la direction de pressage transversale (y) et au moyen duquel une force d'entraînement est susceptible d'être transmise au poinçon transversal (3),
    caractérisée en ce que
    le dispositif de transmission de force (5) présente une forme sensiblement en forme annulaire ou en forme de cadre, qui est agencée dans un plan perpendiculaire à la direction de pressage principale (x), des surfaces (6) obliques par rapport à la direction de pressage transversale (y) sont formées sur le dispositif de transmission de force (5), surfaces contre lesquelles s'applique respectivement un moyen de maintien antagoniste de l'un des poinçons transversaux (3), et
    par déplacement du dispositif de transmission de force (5) dans la direction de pressage principale (x) avec déplacement du poinçon transversal (3) dans la direction de pressage transversale respective, les surfaces obliques (6) sont déplaçables pour presser le matériau sous forme de poudre contre le moyen de maintien antagoniste.
  2. Presse selon la revendication 1,
    caractérisée en ce que chaque poinçon transversal (3) inclut un corps de montage (8), qui est déplaçable dans un boîtier de montage (9) dans la direction de pressage transversale (y), de préférence le long d'un guidage (10, 11).
  3. Presse selon la revendication 2,
    caractérisée en ce que le guidage inclut une saillie (10), de préférence allongée, prévue sur le corps de montage (8) et/ou sur le boîtier de montage (9), et un évidement (11) prévu sur le corps de montage (8) ou respectivement sur le boîtier de montage (9) et recevant la saillie (10), qui présente de préférence en section transversale une forme négative de la saillie (10), évidement dans lequel peut être déplacée la saillie (10).
  4. Presse selon l'une des revendications 1 à 3,
    caractérisée en ce que le moyen de maintien antagoniste comporte une surface antagoniste (7) parallèle à la surface oblique (6), et le moyen de maintien antagoniste est déplaçable sur la surface (6).
  5. Presse selon l'une des revendications 1 à 4,
    caractérisée en ce que le moyen de transmission de force (5) est monté en rotation autour d'un axe de rotation parallèle à la direction de pressage principale (x).
  6. Presse selon l'une des revendications 4 à 5,
    caractérisée en ce que la surface (6) est basculée sur 45 à 95°, de préférence sur 65 à 75°, de préférence aux alentours de 70° par rapport à la direction de pressage transversale (y).
  7. Presse selon l'une des revendications 4 à 6,
    caractérisée en ce que le moyen de transmission de force (5) et le poinçon transversal (3) sont reliés l'un à l'autre via un organe de maintien (12), qui est fixé sur le moyen de transmission de force (5) ou sur le poinçon transversal (3) et qui est maintenu avec possibilité de translation sur le poinçon transversal (3) ou respectivement sur le moyen de transmission de force (5), de telle manière que le poinçon transversal (3) est maintenu contre la surface (6) avec sa surface antagoniste (7) en cas de déplacement du moyen de transmission de force (5).
  8. Presse selon l'une des revendications 1 à 7,
    caractérisée en ce que l'entraînement (4) inclut un cylindre hydraulique et/ou un moteur de positionnement électrique et en ce qu'il est de préférence prévu une unité de commande pour l'entraînement (4).
  9. Procédé pour la production d'une ébauche à partir d'un matériau sous forme de poudre avec une presse, dans laquelle le matériau est introduit dans un évidement (2) dans une matrice de presse (1), le matériau est pressé dans la matrice de presse avec un poinçon de presse principal dans une direction de pressage principale (x), aux moins deux poinçons transversaux (3) sont déplacés dans une direction de pressage transversale (y) transversale par rapport à la direction de pressage principale (x) avant et/ou pendant le pressage dans la direction de pressage principale (x) jusque dans l'évidement (2) ou au moins en direction de l'évidement, dans lequel plusieurs poinçons transversaux (3) sont déplacés conjointement au moyen d'un moyen de transmission de force (5) avec lequel une force d'entraînement est transmise à plusieurs poinçons transversaux (3),
    caractérisé en ce que
    le moyen de transmission de force (5), qui présente une forme sensiblement en forme annulaire ou en forme de cadre, qui est agencée dans un plan perpendiculaire à la direction de pressage principale (x), et avec des surfaces (6) obliques par rapport à la direction de pressage transversale (y) formées sur celui-ci, surfaces contre lesquelles s'applique respectivement un moyen de maintien antagoniste de l'un des poinçons transversaux (3), est déplacé dans la direction de pressage principale (x) pour presser le matériau en forme de poudre, et les surfaces obliques (6) sont déplacées en translation en déplaçant le poinçon du poinçon de pressage transversal (3) dans la direction de pressage transversale respective contre le moyen de maintien antagoniste.
EP11183978.3A 2010-10-13 2011-10-05 Presse et procédé de fabrication d'un objet moulé en matériau poudreux Not-in-force EP2441573B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010048183 DE102010048183A1 (de) 2010-10-13 2010-10-13 Presse und Verfahren zur Herstellung eines Formlings aus pulverförmigem Material

Publications (3)

Publication Number Publication Date
EP2441573A2 EP2441573A2 (fr) 2012-04-18
EP2441573A3 EP2441573A3 (fr) 2013-11-13
EP2441573B1 true EP2441573B1 (fr) 2015-08-26

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EP11183978.3A Not-in-force EP2441573B1 (fr) 2010-10-13 2011-10-05 Presse et procédé de fabrication d'un objet moulé en matériau poudreux

Country Status (2)

Country Link
EP (1) EP2441573B1 (fr)
DE (1) DE102010048183A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11267214B2 (en) 2016-10-12 2022-03-08 Horn Hartstoffe Gmbh Manufacturing a hard-metal pressed article

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014090226A1 (fr) * 2012-12-14 2014-06-19 Dorst Technologies Gmbh & Co. Kg Dispositif de compression de poudre céramique et/ou métallique pour le moulage par compression d'une pièce
DE102012024503A1 (de) * 2012-12-14 2014-06-18 Dorst Technologies Gmbh & Co. Kg Keramik- und/oder Metallpulver-Pressenanordnung zum Pressen eines Formteils
DE102013109157B4 (de) 2013-08-23 2016-06-09 Fette Compacting Gmbh Presse zur Herstellung von Presslingen aus pulverförmigem Material
CH710828B1 (de) 2015-03-05 2019-06-28 Dietmar W Kramer Dr Sc Techn Eth Phd Pulverpresse sowie ein Futtergehäuse mit vorzugsweise mehreren für ein Querpressen verschiebbaren Stempeln.
DE102017105364A1 (de) 2017-03-14 2018-09-20 Gkn Sinter Metals Engineering Gmbh Verfahren zur Herstellung eines Grünlings mit einem Presswerkzeug, ein Presswerkzeug, ein Grünling sowie ein Sinterteil

Citations (1)

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DE1008421B (de) * 1951-06-14 1957-05-16 Hans Vogt Dr H C Vorrichtung zum Kalt- oder Warmverformen von Presslingen aus Pulvermassen

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CH361195A (de) * 1956-06-22 1962-03-31 Horn Detlev Pressform
LU34188A1 (fr) * 1956-08-08
DE1937410A1 (de) * 1969-07-23 1971-02-04 Zagelow Dipl Ing Guenther Pressform fuer das Pressen zylindrischer Koerper oder Rohre aus Materialien mit starker Volumensreduktion beim Pressen wie z.B. Holzteilchen mit einer Beifuegung von Bindemitteln
GB1361684A (en) † 1970-09-22 1974-07-30 Olivetti & Co Spa Device for moulding sinterin blanks
JPS5033537A (fr) † 1973-07-27 1975-03-31
DE102005038915A1 (de) 2005-08-17 2007-03-22 Dorst Technologies Gmbh & Co. Kg Verfahren und Vorrichtung zum Pressen eines Formteils mit einem Querstempel
US7829015B2 (en) † 2007-05-31 2010-11-09 Borgwarner Inc. Formation of non-axial features in compacted powder metal components
EP2103423B8 (fr) † 2008-03-17 2011-06-15 Osterwalder AG Presse à poudre destinée à la fabrication d'une pièce pressée en poudre de métal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1008421B (de) * 1951-06-14 1957-05-16 Hans Vogt Dr H C Vorrichtung zum Kalt- oder Warmverformen von Presslingen aus Pulvermassen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11267214B2 (en) 2016-10-12 2022-03-08 Horn Hartstoffe Gmbh Manufacturing a hard-metal pressed article

Also Published As

Publication number Publication date
EP2441573A2 (fr) 2012-04-18
DE102010048183A1 (de) 2012-04-19
EP2441573A3 (fr) 2013-11-13

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