EP2441573B1 - Press and method for manufacturing a moulded part out of powder material - Google Patents

Press and method for manufacturing a moulded part out of powder material 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
press
force transfer
dies
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 - Fee Related
Application number
EP11183978.3A
Other languages
German (de)
French (fr)
Other versions
EP2441573A2 (en
EP2441573A3 (en
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 Maschinenfabrik KG
Original Assignee
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
Priority to DE201010048183 priority Critical patent/DE102010048183A1/en
Application filed by Komage-Gellner Maschinenfabrik KG filed Critical Komage-Gellner Maschinenfabrik KG
Publication of EP2441573A2 publication Critical patent/EP2441573A2/en
Publication of EP2441573A3 publication Critical patent/EP2441573A3/en
Application granted granted Critical
Publication of EP2441573B1 publication Critical patent/EP2441573B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/007Presses 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B1/00Presses, 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
    • B30B1/40Presses, 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02Presses 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

Description

  • 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.
  • From the WO2008 / 150778 goes out such 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. When 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.
  • From the DE 19 37 410 A is a mold with alternately in horizontal section stump wedge and mushroom-shaped press ends with the periphery of a filling space slightly inclined common sliding surfaces, wherein the filling chamber in radial section has a flower-shaped image.
  • A press that has an eccentric drive for each of the transverse punches, from the WO2007 / 019832 A2 known.
  • In another 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 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.
  • Since all 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. For driving the transverse punches less space is required, the design effort is less and the press can be produced inexpensively. Furthermore, 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.
  • In one embodiment of the invention, 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.
  • In one embodiment of the invention, 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.
  • Conveniently, 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.
  • While it would be conceivable to provide several power transmission devices on the press, each of which interacts with a plurality of transverse punches, in a particularly preferred embodiment of the invention, only a single power transmission device is provided. The power transmission device expediently absorbs the forces acting on or on the transverse punches.
  • 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. Preferably, 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. Expediently, 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. Advantageously, 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.
  • In a further embodiment of the invention, 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.
  • Conveniently, 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. Depending on requirements, the transverse punches can optionally be arranged in different positions to the pressing die.
  • The invention will be explained in more detail with reference to embodiments and the accompanying drawings relating to these embodiments. Show it:
  • Fig. 1
    a part of a press according to the invention in isometric view,
    Fig. 2
    the part still Fig. 1 in side view,
    Fig. 3
    a component of the press according to the invention in isometric view,
    Fig. 4
    the component after Fig. 3 on average,
    Fig. 5
    the component after Fig. 3 in another cut, and
    Fig. 6
    the part of the press according to the invention Fig. 1 on average.
  • An in Fig. 1 illustrated part of a press according to the invention 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.
  • In the bearing ring 16, 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. 1
  • Querstempels 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. At the opposite side of the stamp member 14 of the slide 8, 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. As in particular the 4 and 5 can be seen, in the slide 8 parallel to the elongated projections 10 also two holes are provided, 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 their other In order to move the slide 8 with the stamp parts 14, 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.
  • For pressing moldings, the press according to the invention can be used in various ways.
    On the one hand, 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.
    Furthermore, 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 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. Correspondingly, the path to be traveled with the stamp member 14 or the force to be applied for pressing can be controlled.

Claims (9)

  1. Press for manufacturing a moulded part out of powder material, which has a female press mould (1) with a recess (2) to hold the material to be pressed, at least one main press die for pressing the material in a main pressing direction (x) and at least two transverse dies (3), which can be moved into the recess (2) in a transverse pressing direction (y) transverse with respect to the main pressing direction (x) and for which there is provided a drive (4) which comprises a force transfer device (5) which is mounted such that it can move in a direction transverse to the transverse pressing direction (y) and with which a drive force can be transferred to the transverse dies (3), characterized in that
    the force transfer device (5) has a substantially annular or frame-like form which is arranged in a plane perpendicular to the main pressing direction (x), on the force transfer device (5), there are formed surfaces (6) which are inclined with respect to the transverse pressing direction (y), on which in each case a pressure plate of respectively one of the transverse dies (3) bears and, by moving the force transfer device (5) in the main pressing direction (x) while moving the transverse dies (3) in the respective transverse pressing direction, the inclined surfaces (6) can be displaced towards the pressure plates in order to press the powder material.
  2. Press according to Claim 1,
    characterized in that
    each transverse die (3) comprises a bearing element (8) which can be displaced in the transverse pressing direction (y) in a bearing housing (9), preferably along a guide (10, 11).
  3. Press according to Claim 2,
    characterized in that
    the guide comprises a preferably elongated projection (10) provided on the bearing element (8) and/or the bearing housing (9) and a recess (11) provided on the bearing element (8) or the bearing housing (9) and accommodating the projection (10), preferably having in cross section a negative form of the projection (10), in which recess the projection (10) can be displaced.
  4. Press according to one of Claims 1 to 3,
    characterized in that
    the pressure plate has a mating surface (7) parallel to the inclined surface (6), and the pressure plate can be displaced on the surface (6).
  5. Press according to one of Claims 1 to 4,
    characterized in that
    the force transfer device (5) is mounted such that it can rotate about an axis of rotation parallel to the main pressing direction (x).
  6. Press according to either of Claims 4 and 5,
    characterized in that
    the surface (6) is tilted with respect to the transverse pressing direction (y) by 45 to 85°, preferably by 65 to 75°, preferably by 70°.
  7. Press according to one of Claims 4 to 6,
    characterized in that
    the force transfer device (5) and the transverse die (3) are connected to each other via a holding element (12), which is fixed to the force transfer device (5) or to the transverse die (3) and is displaceably held on the transverse die (3) or on the force transfer device (5), in such a way that the transverse die (3) is held with its mating surface (7) on the surface (6) during movement of the force transfer device (5).
  8. Press according to one of Claims 1 to 7,
    characterized in that
    the drive (4) comprises a hydraulic cylinder and/or an electric actuating motor and a control unit is preferably provided for the drive (4).
  9. Method for manufacturing a moulded part out of powder material by using a press in which the material is put into a recess (2) in a female press mould (1), the material in the female press mould is pressed in a main pressing direction (x) by a main press die, at least two transverse dies (3) are moved into the recess (2) or at least in the direction of the recess in a transverse pressing direction (y) transverse with respect to the main pressing direction (x) before and/or during the pressing in the main pressing direction (x), a plurality of transverse dies (3) being moved jointly by means of a force transfer device (5) with which a drive force is transferred to a plurality of the transverse dies (3),
    characterized in that
    the force transfer device (5), which has a substantially annular or frame-like form, which is arranged in a plane perpendicular to the main pressing direction (x), and on which there are formed surfaces (6) that are inclined with respect to the transverse pressing direction (y), on which in each case a pressure plate of respectively one of the transverse dies (3) bears, is moved in the main pressing direction (x) in order to press the powder material, the inclined surfaces (6) being displaced towards the pressure plates while moving the transverse press dies (3) in the respective transverse pressing direction.
EP11183978.3A 2010-10-13 2011-10-05 Press and method for manufacturing a moulded part out of powder material Expired - Fee Related EP2441573B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201010048183 DE102010048183A1 (en) 2010-10-13 2010-10-13 Press and method for producing a molded article of powdery material

Publications (3)

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

Family

ID=44719724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11183978.3A Expired - Fee Related EP2441573B1 (en) 2010-10-13 2011-10-05 Press and method for manufacturing a moulded part out of powder material

Country Status (2)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012024503A1 (en) * 2012-12-14 2014-06-18 Dorst Technologies Gmbh & Co. Kg Modular ceramic and/or metal powder assembly, useful in press/adapter for pressing molded part, comprises die, lateral adjustment drive module for adjusting transverse punch in lateral adjustment device, and holding device having housing
WO2014090226A1 (en) * 2012-12-14 2014-06-19 Dorst Technologies Gmbh & Co. Kg Ceramic and/or metal powder press arrangement for pressing a moulded part
DE102013109157B4 (en) 2013-08-23 2016-06-09 Fette Compacting Gmbh Press for the production of compacts of powdered material
CH710828B1 (en) * 2015-03-05 2019-06-28 Dietmar W Kramer Dr Sc Techn Eth Phd Powder press and a chuck housing with preferably several for a transverse presses slidable punches.
DE102016119429A1 (en) * 2016-10-12 2018-04-12 Horn Hartstoffe Gmbh Method and device for producing a hard metal compact and carbide compact
DE102017105364A1 (en) 2017-03-14 2018-09-20 Gkn Sinter Metals Engineering Gmbh Method for producing a green compact with a pressing tool, a pressing tool, a green compact and a sintered part

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1008421B (en) * 1951-06-14 1957-05-16 Kurt Kaschke Apparatus for cold or hot forming of compacts from powder compositions

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH361195A (en) * 1956-06-22 1962-03-31 Horn Detlev mold
BE545494A (en) * 1956-08-08
DE1937410A1 (en) * 1969-07-23 1971-02-04 Zagelow Dipl Ing Guenther Mould for reconstituted wood cylinders
GB1361684A (en) 1970-09-22 1974-07-30 Olivetti & Co Spa Device for moulding sinterin blanks
JPS5033537A (en) 1973-07-27 1975-03-31
DE102005038915A1 (en) 2005-08-17 2007-03-22 Dorst Technologies Gmbh & Co. Kg Method and device for pressing a molded part with a transverse punch
US7829015B2 (en) * 2007-05-31 2010-11-09 Borgwarner Inc. Formation of non-axial features in compacted powder metal components
ES2362317T3 (en) * 2008-03-17 2011-07-01 Osterwalder Ag Powder press for the manufacture of a pressed metal powder piece.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1008421B (en) * 1951-06-14 1957-05-16 Kurt Kaschke Apparatus for cold or hot forming of compacts from powder compositions

Also Published As

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

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