EP2441573A2 - 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
EP2441573A2
EP2441573A2 EP20110183978 EP11183978A EP2441573A2 EP 2441573 A2 EP2441573 A2 EP 2441573A2 EP 20110183978 EP20110183978 EP 20110183978 EP 11183978 A EP11183978 A EP 11183978A EP 2441573 A2 EP2441573 A2 EP 2441573A2
Authority
EP
European Patent Office
Prior art keywords
transverse
press
pressing direction
power transmission
transmission device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20110183978
Other languages
German (de)
English (en)
Other versions
EP2441573B1 (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 from powdered 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 transverse transverse direction to the main pressing direction in the recess are movable and for which a drive is provided.
  • the invention further relates to a method for pressing a molded article of powdery material.
  • Such a press which has an eccentric drive for each of the transverse punches, from the W02007 / 019832 A2 known.
  • Such a press which has an eccentric drive for each of the transverse punches, from the W02007 / 019832 A2 known.
  • With such from the WO2009 / 115444 A1 known presses are provided for driving the transverse punch hydraulic linear actuators whose movements are transmitted via sliding parts on the transverse punch.
  • the invention has for its object to simplify the drive for the transverse punch of the press of the type mentioned.
  • the object is achieved by the drive comprising a force transfer device, with which a drive force can be transferred to a plurality of the transverse branches.
  • the transverse punches can be movable radially or, preferably in parallel, offset in the press die. While other directions are conceivable, the transverse punches are advantageously movable perpendicular to the main pressing direction.
  • each transverse punch comprises 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 power transmission device comprises an inclined to the transverse pressing direction surface on which abuts a counter-holder of the transverse punch, which preferably has a counter-surface parallel to the surface, and the power transmission device is on the anvil with movement of the cross bar in the transverse pressing direction and / or in displaceable in the opposite direction.
  • the power transmission device in a direction transversely, preferably perpendicular, movable to the transverse pressing direction, preferably in the main pressing direction displaceable and / or rotatable about a rotational axis parallel to the main pressing direction, stored.
  • 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 that of the Power transmission path traveled way. 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 expediently has a substantially annular or frame-like shape and absorbs the forces acting on or from the transverse punches, and is arranged in a plane perpendicular to the height pressing direction.
  • 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 can be formed, for example, by threaded holes for screws with which the transverse punches are fastened 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, in each of which a stamping part 14 of transverse punches 3 arranged around the lateral surface of the pressing die 2 protrudes.
  • Each transverse punch 3 comprises a slider 8 connected to the stamp member 14, which is 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.
  • the bearing ring 16 is slidably mounted in the direction of a cylinder axis of the die 2, a collar 5, which is provided on its inside with six guide surfaces 6 for the inclined surfaces 7 of the slide 8 of the transverse punch 3.
  • Fig. 2 and 6 are provided for the displacement of the adjusting ring 5 three attached to the support plate 22 hydraulic drives 4, which are connected via a screw rod 25 with the adjusting ring 25.
  • 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 force to be applied by the transverse punches 3 to a blank are adjustable.
  • the press further comprises for pressing the powder in a main pressing direction x in the direction of said cylinder axis, a main punch 27, which is also secured to the support plate 22 and a not shown here, another to a generated by the main punch 27 pressing force opposite pressing force generating further main punch, which engages from above into the recess 2 in the press die 1.
  • the bearing housing 9 of the cross bar 3 has a foot 16, which is provided with holes through which the transverse punch 3 is fastened 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.
  • two holes are further provided in the slide parallel to the elongated projections 10, in each of which a coil spring 15 is arranged, which is supported with its one end to the respective end of the bore and with its other end to an inner wall of the Bearing housing 9 is present.
  • 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, as described above, depends on the angle 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. Accordingly accurate can be traced back the path to be traveled with the stamp member 14 or the force to be applied for pressing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
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 true EP2441573A2 (fr) 2012-04-18
EP2441573A3 EP2441573A3 (fr) 2013-11-13
EP2441573B1 EP2441573B1 (fr) 2015-08-26

Family

ID=44719724

Family Applications (1)

Application Number Title Priority Date Filing Date
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 (2)

* 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
WO2016139151A1 (fr) * 2015-03-05 2016-09-09 Kramer W Dietmar Presse à poudre et boîtier de mandrin avec de préférence plusieurs pistons mobiles pour un pressage transversal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102016119429A1 (de) 2016-10-12 2018-04-12 Horn Hartstoffe Gmbh Verfahren und Vorrichtung zur Herstellung eines Hartmetallpresslings sowie Hartmetallpressling
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147127A1 (de) † 1970-09-22 1972-03-23 Ing. C. Olivetti & C, S.p.A., Ivrea, Turin (Italien) Vorrichtung zum Formen von Sinterpresslingen
JPS5033537A (fr) † 1973-07-27 1975-03-31
WO2007019832A2 (fr) 2005-08-17 2007-02-22 Dorst Technologies Gmbh & Co. Kg Procede et dispositif de compression d'un article moule au moyen d'un poinçon transversal
WO2008150778A1 (fr) † 2007-05-31 2008-12-11 Borgwarner Inc. Formation d'elements non axiaux dans des composants metalliques en poudre compactee
EP2103423A1 (fr) † 2008-03-17 2009-09-23 Osterwalder AG Presse à poudre destinée à la fabrication d'une pièce pressée en poudre de métal

Family Cites Families (4)

* 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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147127A1 (de) † 1970-09-22 1972-03-23 Ing. C. Olivetti & C, S.p.A., Ivrea, Turin (Italien) Vorrichtung zum Formen von Sinterpresslingen
JPS5033537A (fr) † 1973-07-27 1975-03-31
WO2007019832A2 (fr) 2005-08-17 2007-02-22 Dorst Technologies Gmbh & Co. Kg Procede et dispositif de compression d'un article moule au moyen d'un poinçon transversal
WO2008150778A1 (fr) † 2007-05-31 2008-12-11 Borgwarner Inc. Formation d'elements non axiaux dans des composants metalliques en poudre compactee
EP2103423A1 (fr) † 2008-03-17 2009-09-23 Osterwalder AG Presse à poudre destinée à la fabrication d'une pièce pressée en poudre de métal
WO2009115444A1 (fr) 2008-03-17 2009-09-24 Osterwalder Ag Presse à poudre pour la fabrication d’un objet pressé en poudre métallique

Cited By (3)

* 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
WO2016139151A1 (fr) * 2015-03-05 2016-09-09 Kramer W Dietmar Presse à poudre et boîtier de mandrin avec de préférence plusieurs pistons mobiles pour un pressage transversal
US10899100B2 (en) 2015-03-05 2021-01-26 Dietmar W Kramer Powder press and a feed housing having preferably a plurality of stamps which are movable for a transverse press

Also Published As

Publication number Publication date
DE102010048183A1 (de) 2012-04-19
EP2441573B1 (fr) 2015-08-26
EP2441573A3 (fr) 2013-11-13

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