EP3645261B1 - Plaque plane d'un outil de presse - Google Patents

Plaque plane d'un outil de presse Download PDF

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Publication number
EP3645261B1
EP3645261B1 EP18735569.8A EP18735569A EP3645261B1 EP 3645261 B1 EP3645261 B1 EP 3645261B1 EP 18735569 A EP18735569 A EP 18735569A EP 3645261 B1 EP3645261 B1 EP 3645261B1
Authority
EP
European Patent Office
Prior art keywords
axial direction
plane plate
plane
plate
region
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.)
Active
Application number
EP18735569.8A
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German (de)
English (en)
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EP3645261A1 (fr
Inventor
Rainer Schmitt
Hasim Tekines
Robert Maassen
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.)
GKN Powder Metallurgy Engineering GmbH
Original Assignee
GKN Sinter Metals Engineering GmbH
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Publication date
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Publication of EP3645261A1 publication Critical patent/EP3645261A1/fr
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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
    • B30B11/027—Particular press methods or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/027—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form using a bottom press ram actuated upwardly towards mould covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • B30B15/067—Press rams with means for equalizing the pressure exerted by a plurality of press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B22F2003/033—Press-moulding apparatus therefor with multiple punches working in the same direction

Definitions

  • the invention relates to a level plate for a press tool of a press, in particular a powder press for producing green compacts.
  • the invention further relates to the use of a flat plate in a press tool of a press for producing a green compact.
  • the press is used to produce sinterable green bodies, i.e. green bodies that can be sintered after the pressing process.
  • metallic and/or ceramic powders can be pressed into green bodies in the press.
  • Known presses of this type include at least one die, an upper press tool comprising one or more upper punches and a lower press tool comprising one or more lower punches.
  • An inner circumferential surface of the die forms the receptacle for the powder or the green compact to be produced.
  • at least one upper punch of the upper press tool can move into the die along an axial direction via a first end face of the die that is open at the top.
  • the at least one upper punch slides along the inner circumferential surface of the die and increasingly compresses the powder.
  • at least one lower punch can additionally be provided, which moves into the die along the axial direction via a second end face of the die that is open at the bottom, or moves in the die between an upper position and a lower position.
  • the powder is pressed into a green compact, the inner peripheral surface of the die defining in particular a lateral contour of the green compact.
  • one or each press tool comprises a plurality of punches, with at least one punch opposite the at least one other Stamp can be moved along the axial direction for pressing the powder.
  • Each punch (and every component of the press tool connected to this punch for transmitting the pressing force) can be assigned to a tool level.
  • a plane plate also called a tool plane plate
  • the plane plate may be guided by at least one guide column extending along the axial direction.
  • the at least one guide column reduces or prevents rotation of the plane plate in a circumferential direction and/or tilting of the plane plate about an axis running along a radial direction.
  • the different level plates of at least one upper or one lower pressing tool can be guided together by guide columns.
  • a punch holder can additionally be arranged, which transfers a pressing force transmitted by the level plates to the at least one punch.
  • pressure plates can be provided between the stamp or stamp holder and the plane plate, which transmit a pressing force of the plane plate in the axial direction and in the radial direction to the stamps.
  • Stamps or stamp holders can be attached to the printing plate or to the level plate via clamping plates (alternatively), bayonet locks or shell-like holders.
  • the individual level plates which are characterized by guidance through at least one guide column and a connection to the at least one lifting cylinder, are spaced apart from one another in the axial direction and arranged one above the other, that is, they are permanently at different heights (levels). arranged along the axial direction.
  • One Plane plate can be cubic, cuboid or. be disc-shaped.
  • the plane plate extends between a centrally arranged receptacle for the printing plate, the stamp holder or the stamp along the radial direction at least to a cylindrical guide surface which is provided for contacting one of the guide columns.
  • a press is e.g. B. from the US 5,498,147 known.
  • the level plates shown there are rectangular in cross section and have a constant wall thickness.
  • the level plate is perforated in some areas so that a pressure piston of the lifting cylinder or a pressure plate can be accommodated on the level plate for connection to the stamp.
  • the cross-sectional changes are not in the area between the guide surfaces on the guide columns and the central receptacle for the printing plate and are not continuous along an extension, but are only provided at one position, namely at the receptacle for the printing plate, with the cross-sectional changes occurring regularly are formed by side walls running parallel to the axial direction.
  • the structure of a known press or a press tool has a large overall height in the axial direction.
  • the individual components of the relevant tool level i.e. punch, possibly associated punch holder, possibly associated pressure plate
  • the elasticity of the tool plane refers in particular to the deformation of the components of the tool plane in the axial direction as a result of a pressing force acting on the connection by the lifting cylinder or on the receptacle by the punch or punch holder.
  • the unit of elasticity is: m/N [meter/Newton].
  • demoulding the green body to be produced can be problematic due to the different expansion of the components between different tool levels when the tool levels are relaxed (pressing force is reduced), and cracks can occur in the green body.
  • a cuboid plane plate which, starting from a receptacle, has a conically widening area in the area of the underside of the plane plate.
  • the DE 10 2015 201 966 A1 is aimed at stamps with a conical base.
  • the conical substructure is connected to well-known, cuboid plane panels.
  • the US 2017/087638 A1 is aimed at conical stamps, whereby the stamps are arranged on cylindrical stamp holders.
  • the object of the present invention to at least partially alleviate or even solve the problems described with reference to the prior art.
  • the differences in elasticities should at least be reduced, with the press tools also being able to be manufactured or provided with a lower overall height.
  • the weight of at least the level plates should be reduced if possible. This means that the assembly of the press or the level plate can be simplified and, if necessary, carried out more quickly. In particular, more compact presses with a lower overall height can be used, so that material and costs can be saved here too.
  • a level plate for a press tool of a press contributes to this, in particular a powder press for producing green compacts.
  • the press is used to produce sinterable green bodies, i.e. green bodies that can be sintered after the pressing process.
  • metallic and/or ceramic powders can be pressed into green bodies in the press.
  • the level plate can be made in one piece.
  • the level plate can be moved via at least one lifting cylinder along an axial direction to actuate a ram of the press.
  • the plane plate has a connection for the at least one lifting cylinder, at least one at least partially cylindrical guide surface parallel to the axial direction for contacting a guide column and a centrally arranged receptacle for contacting the punch or a punch holder of the press.
  • the plane plate has at least a first cross section which is parallel to the axial direction and along a radial direction perpendicular to the axial direction between the receptacle and the guide surface (or between the receptacle and a position along the radial direction at which the at least one guide surface is arranged). At least in that one In a first cross section, at least a first region is present in which a wall thickness of the plane plate changes continuously.
  • lifting cylinders can be used to move the level plate, with the level plate then having a connection for each lifting cylinder.
  • the at least one lifting cylinder can be arranged opposite the plane plate in such a way that the plane plate is subjected to the lowest possible torque about an axis parallel to the radial direction, which could cause the plane plate to tilt about this axis.
  • z. B two lifting cylinders are provided, which are arranged offset from one another by 180 degrees along the circumferential direction.
  • the plane plate may have a plurality of (preferably four) at least partially cylindrical guide surfaces which are arranged spaced apart from one another in a direction perpendicular to the axial direction. Via the at least one guide surface, the plane plate can be guided along the axial direction by the at least one guide column, which extends along the axial direction.
  • the at least one guide column reduces or prevents rotation of the plane plate in a circumferential direction and/or tilting of the plane plate about an axis running along a radial direction.
  • the level plates of at least one upper or lower press tool can be guided by common guide columns.
  • the receptacle for contacting the stamp or a stamp holder of the press is in particular arranged centrally, ie (approximately) in a center of the plane plate when viewed along the axial direction.
  • a central arrangement of the receptacle is particularly present when it is positioned centrally between or at the same distance from several connections, i.e. in particular centrally with respect to the force application points of the lifting cylinders.
  • the recording can be arranged (in the middle) between a plurality of lifting cylinders and a plurality of guide columns, so that when the plane plate is subjected to a pressing force, the plane plate is caused by the lowest possible torque about an axis parallel to the radial direction, which causes the plane plate to tilt about this axis could cause, is applied.
  • the receptacle can be round, preferably circular.
  • the receptacle can have a longitudinal axis that runs parallel to the axial direction and/or is arranged concentrically to the receptacle.
  • the radial direction extends perpendicular to the axial direction and in particular starting from the longitudinal axis.
  • the receptacle can have a receiving surface for contacting and/or supporting the stamp or stamp holder.
  • the stamp or the stamp holder can be attached to the holder using a clamping plate, a screw connection, a bayonet lock or similar.
  • the plane plate has at least a first cross section which runs parallel to the axial direction and along the radial direction between the receptacle and the guide surface (or between the receptacle and a position along the radial direction at which the at least one guide surface is arranged), at least a first area in which a wall thickness of the plane plate changes continuously.
  • the wall thickness refers to the material thickness of the plane plate parallel to the axial direction.
  • This wall thickness changes continuously if e.g. B. there is a different wall thickness at each mutually adjacent position along the radial direction in the first area.
  • the wall thickness meant, as z. B. is formed by a hole or something similar.
  • the change in wall thickness can be designed as a continuous reduction and/or continuous increase. It can be provided that in the first region there is a concrete wall thickness in fewer than five positions in the radial direction, in particular only in a maximum of three, two or one position. The positions are spaced apart in the radial direction by a maximum of 0.5 mm or even 0.1 mm.
  • known plane plates In the axial direction, known plane plates have a substantially constant wall thickness.
  • the plane plates In a cross section that runs parallel to the axial direction and along a radial direction perpendicular to the axial direction between the receptacle and the guide surface, the plane plates are in particular rectangular with a substantially constant wall thickness, with an upper side of the plane plate and an underside of the plane plate extend parallel to the radial direction.
  • the ones in the US 5,498,147 The plane plates shown are rectangular in cross section and have a constant wall thickness.
  • the level plate is perforated in some areas so that a pressure piston of the lifting cylinder or a pressure plate can be accommodated on the level plate for connection to the stamp.
  • the cross-sectional changes are not in the area between the guide surfaces on the guide columns and the central receptacle for the printing plate and are not continuous along an extension, but are only provided at one position, namely at the receptacle for the printing plate, with the cross-sectional changes occurring regularly are formed by side walls running parallel to the axial direction.
  • this well-known teaching is deviated from.
  • the plane plate can have a top side pointing in a first axial direction and a second axial direction pointing in a second axial direction opposite to the first axial direction, a connection for the at least one lifting cylinder, a centrally arranged receptacle for contacting the stamp or a stamp holder of the press and at least one have a first at least partially cylindrical guide surface parallel to the axial direction for contacting a first guide column and a second at least partially cylindrical guide surface parallel to the axial direction for contacting a second guide column.
  • the first guide surface can have a first lower end and the second guide surface can have a second lower end. The first lower end and the second lower end can be arranged at different heights relative to the axial direction and thus spaced apart from one another in the axial direction.
  • the plane plate can have four (or more) at least partially cylindrical guide surfaces for contacting four guide columns (i.e. one guide column each), each guide surface having a lower end.
  • the lower ends of each (or at least) two guide surfaces can be arranged at a common height.
  • each of the two at least partially cylindrical first guide surfaces forms a first lower end and each of the two at least partially cylindrical second guide surfaces forms a second lower end.
  • the first lower end and the second lower end may be arranged at different heights from each other with respect to the axial direction.
  • the first lower end and the second lower end may be arranged on a lower side of the plane plate.
  • the guide surfaces can be arranged at different heights. This means that tilting of the plane plate about an axis perpendicular to the axial direction can be reduced or completely prevented compared to a plane plate with guide surfaces arranged exclusively at a common height.
  • the two guide surfaces with the lower ends arranged at the same height can be arranged offset from one another in a circumferential direction by 90 or 180 degrees.
  • All lower ends of the guide surfaces of one plane plate can preferably be arranged at heights that differ from one another in relation to the axial direction.
  • the lower ends of a plane plate which are arranged at different heights compared to the axial direction, are each spaced apart from one another by at least 5 millimeters, in particular at least 20 millimeters, preferably at least 100 millimeters, particularly preferably at least 200 millimeters, along the axial direction.
  • the first guide surface on the top of the plane plate has a first upper end, wherein the first lower end and the first upper end are arranged at different heights from one another compared to the axial direction and thus at a distance from one another in the axial direction.
  • the first lower end and the second lower end are special in the axial direction by at least 50% of the distance, preferably by at least 100% of the distance preferably spaced apart by at least 150% of the distance.
  • the first region can extend in the radial direction over a first extent which is at least 10%, in particular at least 20%, preferably 30%, of a smallest distance between the central receptacle and the guide surface (or between the receptacle and a position along the radial direction on which the at least one guide surface is arranged) in the first cross section along the radial direction.
  • the first extension can be at least 5 millimeters, at least 10 millimeters or at least 20 millimeters.
  • the receptacle can comprise a receiving surface or a functional area (hereinafter also referred to as parts of the receptacle) on the plane plate, on which the stamp or a stamp holder can be arranged.
  • the smallest distance can be determined between the guide surface and a part of the receptacle that is closest to the guide surface along the radial direction.
  • the plane plate can be in at least a second cross section, which runs along the radial direction between the receptacle and the guide surface (or between the receptacle and a position along the radial direction at which the at least one guide surface is arranged) and relative to the first cross section an angular range (e.g. by at least 1 angular degree or at least 5 angular degrees) is arranged rotated in the circumferential direction, have at least a second range in which the wall thickness of the plane plate (also) changes continuously.
  • the second region extends in the radial direction over a second extent that differs from the first extent (is larger or smaller).
  • a cross section rotated by an angular range of 90 or 180 degrees in the circumferential direction relative to the first cross section can be designed to be identical to the first cross section.
  • the second cross section can run parallel to the axial direction and along the radial direction, i.e. rotated only in a circumferential direction compared to the first cross section.
  • the wall thickness can vary at least in the first area, in particular also in the second area, by at least 5%, preferably by at least 10%, particularly preferably by at least 20%.
  • At least the first region can have a first center line in the first cross section, which extends at least partially at a first angle of at least 10 angular degrees, preferably at least 20 angular degrees, and at a first angle of at most 80 angular degrees to the radial direction.
  • the first center line can be defined by the center points of the wall thickness present at the respective radial position.
  • the plane plate can have a third region which adjoins the first region in the radial direction, the third region having a third center line which is at least partially at a third angle of at least 10 Angle degrees, in particular at least 20 degrees, and at a third angle of at most 80 degrees to the radial direction.
  • the first angle (or the second angle) and the third angle are oriented in opposite directions with respect to the radial direction.
  • the comments on the first center line apply accordingly to the third center line.
  • the plane plate has an upper side pointing in a first axial direction and a second axial direction pointing in a second axial direction opposite the first axial direction.
  • the top and bottom of the plane plate extend in the first region of the first cross section at a first angle of at least 10 degrees and at a first angle of at most 80 degrees to the radial direction.
  • the top and/or the bottom of the plane plate can be in the third region of the first cross section parallel to the third center line and/or at a third angle of at least 10 angular degrees, preferably at least 20 angular degrees, and at a third angle of at most 80 angular degrees to the radial direction get lost.
  • the first cross section can extend through the guide surface.
  • the guide surface may have a lower end (at the bottom of the plane plate) disposed at a height (level) with respect to the axial direction.
  • a turning region of the plane plate can be arranged between the first region and the third region. This turning area can be arranged below the lower end with respect to the axial direction.
  • the plane plate can have at least two at least partially cylindrical guide surfaces for contacting a respective guide column, with an at least partially cylindrical first guide surface having a first lower end and an at least partially cylindrical second guide surface having a second lower end.
  • the first lower end and the second lower end can be separated from each other be arranged at different heights compared to the axial direction.
  • a press tool for a press comprising at least a first plane plate and a second plane plate.
  • At least the first level plate can be moved via at least one lifting cylinder along an axial direction to actuate a ram of the press.
  • At least the first level plate has a connection for the at least one lifting cylinder.
  • Each level plate has at least one at least partially cylindrical guide surface for contacting a guide column common to the level plates and a centrally arranged receptacle for contacting the punch or a punch holder of the press.
  • the plane plates can be arranged one above the other along an axial direction, so that the at least one guide surface of each plane plate is arranged coaxially with one another.
  • At least the first level plate can be designed like a level plate described above.
  • the plane plates can be arranged at least partially overlapping one another along the axial direction and along the radial direction. In particular, they can be arranged relative to one another in such a way that at least parts of the two plane plates are arranged at the same height relative to the axial direction (and thus adjacent to one another along the radial direction).
  • the plane plates can be arranged nested within one another (and therefore not only spaced apart from one another in the axial direction), so that an overall height of the press tool can be reduced. Nested here means that the plane plates can be arranged one above the other along the axial direction and at least with parts of the plane plates next to one another in the radial direction.
  • the plane plates of the press tool can each have at least two at least partially cylindrical guide surfaces for contacting two for the Level plates have common guide columns.
  • the first level plate has a first at least partially cylindrical guide surface with a first lower end and the second level plate has a third at least partially cylindrical guide surface with a third lower end.
  • the first plane plate is arranged above the second plane plate in the axial direction.
  • the level plates are arranged relative to one another in such a way that the first guide surface contacts a first guide column of the common guide columns and the third guide surface contacts a (different, i.e.) second guide column of the common guide columns.
  • the first lower end is disposed below the third lower end with respect to the axial direction.
  • the guide surfaces of a plane plate can be arranged at different heights, so that the guide surfaces of different plane plates can be arranged on different guide columns in the axial direction in a reversed order compared to the plane plates.
  • a plane plate in particular a plane plate described above
  • the press can be used to produce sinterable green bodies are produced, i.e. green bodies that can be sintered after the pressing process.
  • metallic and/or ceramic powders can be pressed into green bodies in the press.
  • the plane plate can be moved via at least one lifting cylinder along an axial direction for actuating a stamp of the press, the plane plate having a connection for the at least one lifting cylinder, at least one at least partially cylindrical guide surface parallel to the axial direction for contacting a guide column and a centrally arranged receptacle Contacting the stamp or a stamp holder of the press.
  • the plane plate has at least a first cross section that is parallel to the axial direction and along a radial direction perpendicular to the axial direction between the receptacle and the guide surface (or between the receptacle and a position along the radial direction at which the at least one guide surface is arranged) extends, at least a first area in which a wall thickness of the plane plate changes continuously.
  • the shape of the plane plate can be created using known manufacturing processes such as turning, milling, sawing, drilling, grinding, wire cutting, die sinking and hard milling, etc.
  • the plane plate can be made using so-called additive processes, e.g. B. Laser sintering (3D printing process, for producing spatial structures from powdery starting material by sintering; workpiece is produced in layers). This allows a free design of the level plate, whereby the weight of the level plate can be reduced and the rigidity or elasticity of the level plate can be specifically adjusted.
  • the rigidity of the plane plate refers in particular to the resistance of the plane plate to deformation in the axial direction compared to a pressing force acting on the connection by the lifting cylinders or on the receptacle by the stamp or stamp holder.
  • the unit of stiffness is: N/m [Newton/meter].
  • the stiffness can be determined, for example, as follows: via an FEM analysis, in which the deformation, in particular the elastic deformation, of the plane plate is determined at a certain pressing force [N], which acts on the plane plate in particular in the axial direction (i.e the displacement of the material of the plane plate in the direction of the axial direction, which can be specified in [m]).
  • pressing force [N]/material displacement [m] represents the rigidity of the flat plate.
  • the elasticity or the rigidity of at least two level plates, in particular of all level plates (as described above), preferably differs from one another by a maximum of 30%, a maximum of 20% or a maximum of 10%.
  • first serves primarily (only) to distinguish between several similar objects or sizes, i.e. in particular no dependence and/or order of these objects or sizes on one another pretend. If a dependency and/or sequence is required, this is explicitly stated here or it will be obvious to the person skilled in the art when studying the specifically described embodiment.
  • Fig. 1 shows a press tool 2 of a press 3 in a perspective view, partly in section.
  • Fig. 2 shows the press tool 2 Fig. 1 in a perspective view, in section II-II according to Fig. 3.
  • Fig. 3 shows the press tool 2 Fig. 1 and 2 in a view from above along the axial direction 5.
  • Fig. 4 shows a side view of the press tool in section IV-IV according to Fig. 3 .
  • Fig. 5 shows the press tool 2 Fig. 1 to 4 in a side view in another section according to VV Fig. 3 .
  • the Fig. 1 to 5 are described together below.
  • the press tool 2 comprises a plurality of plane plates 1, 33, two first plane plates 1 and two second plane plates 33, i.e. four, which are arranged one above the other along the axial direction 5.
  • Each of the four level plates 1, 33 is, as in Fig. 9 shown, displaced along the axial direction 5 by two lifting cylinders, a first lifting cylinder 4 and a second lifting cylinder 47.
  • Each level plate 1, 33 therefore has two connections, a first connection 34 for the first lifting cylinder 4 and a second connection 46 for the second lifting cylinder 47.
  • each level plate 1, 33 having four cylindrical guide surfaces, namely first guide surfaces 7 on the first guide column 8 and second guide surfaces 31 on the second guide column 37 (where the second level plate 33 has at least a third guide surface 35 on the second guide column 37) for contacting the guide columns 8, 37 common to the level plates 1, 33.
  • each level plate 1, 33 each has a centrally arranged receptacle 9 for contacting the stamp 6 (see Fig. 8 ) or a stamp holder (also through here symbolized by the stamp 6) of the press 3.
  • the plane plates 1, 33 are arranged one above the other along an axial direction 5, so that the guide surfaces 7, 31, 35 of each plane plate 1, 33 are each arranged coaxially to the corresponding guide surfaces 7, 31, 35 of the other plane plates 1, 33.
  • the plane plates 1, 33 can be arranged at least partially overlapping one another along the axial direction 5 and along the radial direction 11, so that at least parts of the different plane plates 1, 33 are at the same height 29 relative to the axial direction 5 (and thus along the radial direction 11 are arranged adjacent to each other).
  • the plane plates 1, 33 can be arranged nested within one another (and therefore not only spaced apart from one another in the axial direction 5), so that an overall height 48 of the press tool 2 can be reduced. Nested here means that the level plates 1, 33 can be arranged one above the other along the axial direction 5 and next to one another in the radial direction 11 at least with parts of the different level plates 1, 33.
  • the press tool 2 here further comprises a base plate 49 and a die receiving plate 50, between which the guide columns 8, 37 extend and the level plates 1, 33 are arranged.
  • the level plates 1, 33 of the press tool 2 each have four cylindrical guide surfaces 7, 31, 35 for contacting four guide columns 8, 37 common to the level plates 1, 33.
  • a first level plate 1 has a first guide surface 7 with a first lower end 28 and the second level plate 33 has a third guide surface 35 with a third lower end 36.
  • the first level plate 1 can be arranged relative to the axial direction 5 above the second level plate 33 and the level plates 1, 33 can be arranged relative to one another in such a way that the first guide surface 7 is a first guide column 8 of the common guide columns 8, 37 and the third guide surface 35 is one (other, also) second guide column 37 of the common guide columns 8, 37 contacted.
  • the first lower end 28 is arranged below the third lower end 36 relative to the axial direction 5 (see Fig. 4 with the in Fig. 3 Section IV-IV shown).
  • the guide surfaces 7, 31, 35 of a level plate 1, 33 are to be arranged at different heights 29, so that the guide surfaces 7, 31, 35 of different level plates 1, 33 are on different guide columns 8, 37 in the axial direction 5 can be arranged in a reversed order compared to the plane plates 1, 33.
  • a method for actuating a press 3 can be implemented, the press 3 comprising at least one guide column 8, 37 and at least one lifting cylinder 4, 47 as well as a press tool 2 described above.
  • the press 3 and the press tool 2 are provided.
  • at least the first level plate 1 and the second level plate 33 are arranged in the press 3 (i.e. between the base plate 49 and the die receiving plate 50).
  • the plane plates 1, 33 are arranged one above the other along an axial direction 5 in such a way that the at least one cylindrical guide surface 7, 31, 35 of each plane plate 1, 33 is arranged coaxially with one another.
  • the plane plates 1, 33 are arranged at least partially overlapping one another along the axial direction 5 and along the radial direction 11, so that at least parts of the two plane plates 1, 33 are arranged at the same height 29 relative to the axial direction 5 (and thus adjacent to one another along the radial direction 11).
  • level plates 1, 33 are made in one piece.
  • the level plate 1 can be moved via at least one lifting cylinder 4, 47 along an axial direction 5 for actuating a stamp 6 of the press 3.
  • the plane plate 1 has a connection 34, 46 for the at least one lifting cylinder 4, 47, at least one cylindrical guide surface 7, 31 parallel to the axial direction 5 for contacting a guide column 8, 37 and a centrally arranged receptacle 9 for contacting the stamp 6 or one Stamp holder of press 3.
  • the plane plate 1 has at least a first region 12 in at least a first cross section 10, which runs parallel to the axial direction 5 and along a radial direction 11 that runs perpendicular to the axial direction 5 between the receptacle 9 and the guide surface 7, in which there is a Wall thickness 13 of the level plate 1 changes continuously.
  • the level plate 1 shown is actuated via two lifting cylinders 4, 47, the level plate 1 each having a connection 34, 46 for each lifting cylinder 4, 47.
  • the lifting cylinder(s) 4, 47 is/are in particular arranged relative to the plane plate 1 in such a way that the plane plate 1 is subjected to the lowest possible torque about an axis parallel to the radial direction 11.
  • the plane plate 1 has four guide surfaces 7, 31, which are arranged spaced apart from one another in a direction perpendicular to the axial direction 5.
  • the plane plate 1 can be moved along the at least one guide surface 7, 31 axial direction 5 through the at least one guide column 8, 37, which extends along the axial direction 5. Via the at least one guide column 8, 37, a rotation of the plane plate 1 in a circumferential direction 18 and/or a tilting of the plane plate 1 about an axis of rotation/direction running along a radial direction 11 is reduced or prevented.
  • the various level plates 1, 33 of an upper or lower press tool 2 (only lower press tools 2 are shown here) are guided by common guide columns 8, 37.
  • the receptacle 9 for contacting the stamp 6 or a stamp holder of the press 3 is arranged centrally, ie in a center of the plane plate 1 when viewed along the axial direction 5 (see Fig. 3 ).
  • the receptacle 9 is arranged between a plurality of lifting cylinders 4, 47 and a plurality of guide columns 8, 37, so that when the plane plate 1 is subjected to a pressing force, the plane plate 1 is acted upon by the lowest possible torque about an axis parallel to the radial direction 11 becomes.
  • the receptacle 9 is circular here and has a longitudinal axis running parallel to the axial direction 5 and arranged concentrically to the receptacle 9.
  • the radial direction 11 extends perpendicular to the axial direction 5 and in each case starting from the longitudinal axis.
  • the receptacle 9 has a receiving surface for contacting and supporting the stamp 6 or stamp holder.
  • the stamp 6 or the stamp holder can be attached to the receptacle 9 via a clamping plate, a screw connection, a bayonet lock or similar.
  • the plane plate has at least a first cross section 10 which runs parallel to the axial direction 5 and along a direction perpendicular to the axial direction 5 Radial direction 11 runs between the receptacle 9 and the first guide surface 7, at least a first region 12 in which a wall thickness 13 of the plane plate 1 changes continuously.
  • the wall thickness 13 is determined in a direction parallel to the axial direction 5.
  • This wall thickness 13 changes continuously, i.e. H. at each mutually adjacent position along the radial direction 11, the first region 12 has a different wall thickness 13.
  • the first region 12 extends in the radial direction 11 over a first extent 14, which is at least 10% of a smallest distance 15 between the receptacle 9 and the first guide surface 7 in the first cross section 10 along the radial direction 11.
  • the receptacle 9 comprises a receiving surface or a functional area (hereinafter also referred to as parts of the receptacle 9) on the plane plate 1, on which the stamp 6 or a stamp holder can be arranged.
  • the smallest distance 15 is determined between the first guide surface 7 and a part of the receptacle 9 that is closest to the guide surface 7 along the radial direction 11.
  • the plane plate 1 has at least a second cross section 16 (see Fig. 2 and 4 ), which runs along the radial direction 11 between the receptacle 9 and the second guide surface 31 and is arranged rotated relative to the first cross section 10 by an angular range 17 of here 90 degrees in a circumferential direction 18 (see Fig. 3 ), at least a second area 19 in which the wall thickness 13 of the plane plate 1 changes continuously.
  • the second region 19 extends in the radial direction 11 over a second region Extension 20, which differs from the first extension 14 (in terms of amount).
  • the second region 19 has a wall thickness 13 and a second center line 23, the second region 19 extending in the radial direction 11 over a second extension 20, in which the second center line 23 runs at a second angle 24 to the radial direction 11; where the second extension 20 differs from the first extension 14.
  • the second cross section 16 also runs parallel to the axial direction 5 and along a radial direction 11 which runs perpendicular to the axial direction 5, i.e. rotated only in a circumferential direction 18 compared to the first cross section 10.
  • the wall thickness 13 can be seen to vary in the first area 12 and in the second area 19.
  • the first region 12 has a first center line 21 in the first cross section 10, the first center line 21 running at a first angle 22 to the radial direction 11.
  • the first center line 21 (and also the second center line 23) is formed by the center points of the wall thickness 13 present at the respective radial position.
  • the plane plate 1 has in the first cross section 10 (and in the second cross section 16) a third region 25 which adjoins the first region 12 (or the second region 19) in the radial direction 11, the third region 25 has a third center line 26, the third center line 26 running at a third angle 27 to the radial direction 11, the first angle 22 (or the second angle 24) and the third angle 27 being oriented in opposite directions with respect to the radial direction 11.
  • the plane plate 1 has an upper side 39 pointing in a first axial direction 38 and a second axial direction 40 pointing in a second axial direction 40 opposite the first axial direction 38.
  • the top 39 and the bottom 41 of the plane plate 1 run in the first area 12 of the first cross section 10 at a first angle 22 and in the third area 25 at a third angle 27 to the radial direction 11.
  • the first cross section 10 extends through the first guide surface 7 and the first guide surface 7 has a first lower end 28 (on the underside 41 of the plane plate 1), which is arranged at a height 29 relative to the axial direction 5.
  • a turning region 30 of the plane plate 1 is arranged in the first cross section 10 (and in the second cross section 16) between the first region 12 (or the second region 19) and the third region 25.
  • the turning region 30 arranged in the first cross section 10 between the first region 12 and the third region 25 is arranged below the first lower end 28 with respect to the axial direction 5.
  • the level plate 1 has at least two cylindrical guide surfaces 7, 31 for contacting a respective guide column 8, 37, with a cylindrical first guide surface 7 having a first lower end 28 and a cylindrical second guide surface 31 having a second lower end 32, the first lower end 28 and the second lower end 32 are arranged at heights 29 that differ from one another relative to the axial direction 5.
  • the lower ends i.e. the first lower end 28 and the second lower end 32, are arranged on an underside 41 of the level plate 1.
  • the lower ends 28, 32 of two cylindrical guide surfaces 7, 31 of a plane plate 1 (namely those of the first guide surface 7 or of the second guide surface 31) are arranged at a common height 29 (see Fig. 2 ).
  • the two cylindrical guide surfaces 7, 31 with the lower ends 28, 32 arranged at the common height 29 are arranged offset from one another by 180 degrees in a circumferential direction 18.
  • the plane plate 1 has at least two cylindrical guide surfaces 7, 31 for contacting a respective guide column 8, 37, a first cylindrical guide surface 7 having a first lower end 28 and a first upper end 43 and a second cylindrical guide surface 31 having a second lower end 32 and a second upper end 45, wherein the first lower end 28 is arranged at a different height 29 relative to the axial direction 5 below the second lower end 32 and wherein the first upper end 43 is arranged below the second upper one relative to the axial direction 5 End 45 is arranged at a different height 29 (see Fig. 4 ).
  • connection 34 on the top 39 has an upper connection surface 44.
  • the first upper end 43 and the upper connecting surface 44 are arranged at heights 29 that differ from one another compared to the axial direction 5 and are therefore spaced apart from one another in the axial direction 5 (see Fig. 4 ).
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second upper end 45 at a height 29 that differs from the axial direction 5 (see Fig. 4 ).
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second lower end 32 at a height 29 that differs from the axial direction 5 (see Fig. 4 ).
  • Fig. 5 is shown with reference to the uppermost of the plane plates 1, 33, that the (first) plane plate 1 in at least a first cross section 10, which is parallel to the axial direction 5 and along a radial direction 11 running perpendicular to the axial direction 5 between the first connection 34 and the receptacle 9 (and between the second connection 46 and the receptacle 9), has at least a first region 12 with a wall thickness 13, the wall thickness 13 being in the first region 12 and spaced from the receptacle 9 and from the first connection 34 (or from the second connection 46) has a minimum 42.
  • the plane plate 1 is contacted via two lifting cylinders 4, 47 and can be moved along an axial direction 5 to actuate a stamp 6 of the press 3.
  • the level plate 1 has a first connection 34 for a first lifting cylinder 4 and a second connection 46 for a second lifting cylinder 47.
  • the connections 34, 46 are arranged at a height 29 that is common to the axial direction 5.
  • the minimum 42 is designed as an opening which connects an upper side 39 pointing in a first axial direction 38 and an underside 41 of the plane plate 1 pointing in a second axial direction 40 opposite the first axial direction 38.
  • the wall thickness 13 changes continuously in the first area 12 at least between the receptacle 9 and the minimum 42.
  • At least the first region 12 has a first center line 21 in the first cross section 10, the first center line 21 running at a first angle 22 to the radial direction 11.
  • the first plane plate 1 has an upper side 39 pointing in a first axial direction 38 and a second axial direction 40 pointing in a second axial direction 40 opposite to the first axial direction 38, the at least one guide surface 7, 31 on the upper side 39 having an upper end 43 having; wherein the connection 34 has an upper connection surface 44 on the top 39.
  • the upper end 43 and the upper connecting surface 44 are arranged at heights 29 that are different from one another compared to the axial direction 5 and are therefore spaced apart from one another in the axial direction 5 (see Fig. 4 ).
  • the Fig. 6 shows a level plate 1 of the press tool 2 Fig. 1 to 5 in a perspective view.
  • the Fig. 7 shows the first level plate 1 Fig. 6 in another perspective view.
  • the Fig. 8 shows the first level plate 1 Figs. 6 and 7 in a side view in section VIII-VIII according to Fig. 9 .
  • the Fig. 9 shows the first level plate 1 Fig. 6 to 8 in a view from above along the axial direction 5.
  • the Fig. 6 to 9 are described together below. Onto the statements Fig. 1 to 5 is referred to.
  • the level plate 1 shown is actuated via two lifting cylinders 4, 47, with the first level plate 1 having a connection 34, 46 for each lifting cylinder 4, 47.
  • the lifting cylinders 4, 47 are opposite the first level plate 1 arranged that the first plane plate 1 is acted upon by the lowest possible torque about an axis parallel to the radial direction 11.
  • the first plane plate 1 has four guide surfaces 7, 31, which are arranged spaced apart from one another in a direction perpendicular to the axial direction 5. Via the one guide surfaces 7, 31, the first plane plate 1 can be guided along the axial direction 5 through the at least one guide column 8, 37, which extends along the axial direction 5. Via the at least one guide column 8, 37, a rotation of the first plane plate 1 in a circumferential direction 18 and/or a tilting of the plane plate 1 about an axis/direction running along a radial direction 11 is reduced or prevented.
  • the receptacle 9 for contacting the stamp 6 or a stamp holder of the press 3 is arranged centrally, ie in a center of the first plane plate 1 when viewed along the axial direction 5 (see Fig. 9 ).
  • the receptacle 9 is therefore arranged between a plurality of lifting cylinders 4, 47 and a plurality of guide columns 8, 37, so that the first plane plate 1 when the first plane plate 1 is subjected to a pressing force (along the axial direction 5) is as small as possible Torque is applied about an axis parallel to the radial direction 11.
  • the receptacle 9 is circular here and has a longitudinal axis running parallel to the axial direction 5 and arranged concentrically to the receptacle 9.
  • the radial direction 11 extends perpendicular to the axial direction 5 and in each case starting from the longitudinal axis.
  • the receptacle 9 has a receiving surface for contacting and supporting the stamp 6 or stamp holder.
  • the stamp 6 or the stamp holder can be attached to the holder 9 using a clamping plate, a screw connection, a bayonet lock or similar (see Fig. 7 ).
  • the first level plate 1 has at least four cylindrical guide surfaces 7, 31 for contacting a respective guide column 8, 37, with a cylindrical first guide surface 7 having a first lower end 28 and a cylindrical second guide surface 31 having a second lower end 32, the first lower end 28 and the second lower end 32 are arranged at heights 29 that differ from one another relative to the axial direction 5.
  • the lower ends 28, 32 are arranged on an underside 41 of the first level plate 1.
  • the lower ends 28, 32 of two cylindrical guide surfaces 7, 31 of a first plane plate 1 are arranged at a common height 29.
  • the two cylindrical guide surfaces 7, 31 with the lower ends 28, 32 arranged at the common height 29 are arranged offset from one another by 180 degrees in a circumferential direction 18.
  • the first level plate 1 has at least two cylindrical guide surfaces 7, 31 for contacting a respective guide column 8, 37, a first cylindrical guide surface 7 having a first lower end 28 and a first upper end 43 and a second cylindrical guide surface 31 having a second lower end 32 and a second upper end 45, wherein the first lower end 28 is arranged relative to the axial direction 5 below the second lower end 32 at a different height 29 and wherein the first upper end 43 relative to the axial direction 5 below the second upper end 45 is arranged at a different height 29.
  • the first guide surface 7 has a first upper end 43 on the top 39 of the level plate 1, the first lower end 28 and the first upper end 43 are arranged at heights 29 that differ from one another compared to the axial direction 5 and are therefore spaced apart from one another in the axial direction 5.
  • the first lower end 28 and the second lower end 32 are arranged spaced apart from one another in the axial direction 5 by approximately 250% of the distance.
  • connection 34 on the top 39 has an upper connection surface 44.
  • the first upper end 43 and the upper connection surface 44 are arranged at heights 29 that differ from one another relative to the axial direction 5 and are therefore spaced apart from one another in the axial direction 5.
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second upper end 45 at a height 29 that is different from the axial direction 5.
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second lower end 32 at a height 29 that is different from the axial direction 5.
  • Fig. 10 shows a known press tool 2 in a side view in section.
  • the press tool 2 is a lower adapter part 53 of an adapter 51 of a press 3 (see Fig. 11 and 12 )
  • the press tool 2 includes four plane plates 1, which are arranged one above the other along the axial direction 5.
  • Each of the four level plates 1 is displaced along the axial direction 5 by two lifting cylinders 4.
  • Each level plate 1 therefore has two connections 34.
  • Four guide columns 8 are also provided, with each level plate 1 having four cylindrical guide surfaces 7 on the guide column 8 for contacting the guide columns 8 common to the level plates 1.
  • each level plate 1 has a centrally arranged receptacle 9 for contacting the stamp 6 (cf. Fig.
  • the level plates 1 are arranged one above the other along an axial direction 5, so that the guide surfaces 7 of each level plate 1 are each arranged coaxially to the corresponding guide surfaces 7 of the other level plates 1.
  • the press tool 2 here further comprises a base plate 49 and a die receiving plate 50, between which the guide columns 8 extend and the level plates 1 are arranged.
  • the individual plane plates 1 are spaced apart from one another in the axial direction 5 and arranged one above the other, i.e. H. they are permanently arranged at different heights 29 (levels) along the axial direction 5.
  • the plane plate 1 extends between the centrally arranged receptacle 9 for the stamp holder or the stamp 6 along the radial direction 1 at least up to a cylindrical guide surface 7, which is provided for contacting one of the guide columns 8.
  • the plane plates 1 are rectangular in shape in the cross section shown and have a constant wall thickness 13.
  • the receptacle 9 is cylindrical here and extends from the level plate 1 along the axial direction 5.
  • the receptacles 9 of the lower level plates 1 are each longer than the receptacle 1 of the adjacent level plate 1.
  • the change in cross-section is not in the area between the guide surfaces 7 on the guide columns 8 and the central receptacle 9 and does not run continuously along an extension but is only provided at a specific position, namely at the receptacle 9.
  • the change in cross-section is formed by side walls running parallel to the axial direction 5.
  • Fig. 11 shows a known adapter 51 for a press 3 in a side view in section.
  • the adapter 51 includes an upper adapter part 52 and a lower adapter part 53 (similar to the lower adapter part 53 according to Fig. 10 ) with level plates 1, base plate 49 and die receiving plate 50. Go to the explanations Fig. 10 is referred to.
  • Fig. 12 shows a known press frame 54 for receiving an adapter 51, e.g. B. the adapter 51 Fig. 11 .
  • the adapter 51 is supported on the press frame 54.
  • Press frame 54 and adapter 51 with the above-mentioned components form a press 3.
  • the press frame 54 has two couplings 55 for receiving the adapters 51.
  • the structure of the known press 3 or the press tool 2 (i.e. at least the lower adapter part 53) according to Fig. 10 to 12 has a large overall height 48 in the axial direction 5.
  • the individual components of the relevant tool level i.e. punch 6, possibly associated punch holder, receptacle 9) extend to different distances along the axial direction 5, so that different Elasticities are available for each tool level.
  • demoulding the green body to be produced can be problematic due to the different expansion of the components between different tool levels when the tool levels are relaxed (pressing force is reduced), and cracks can occur in the green body.
  • Fig. 13 shows a further exemplary embodiment of a press tool 2 of a press 3 in a perspective view, partly in section.
  • Fig. 14 shows the press tool 2 Fig. 13 in a view from above along the axial direction 5.
  • Fig. 15 shows a side view of the press tool 2 Fig. 13 and 14 in section XV-XV according to Fig. 14 .
  • Fig. 16 shows the press tool 2 Fig. 13 to 15 in a side view in another section XVI-XVI according to Fig. 14 .
  • the Fig. 13 to 16 are described together below. On the comments on the Fig. 1 to 5 is referred to.
  • the press tool 2 has eight (8) guide columns 8, 37, namely four (4) first guide columns 8 and four (4) second guide columns 37.
  • the guide columns 8, 37 each extend from the base plate 49 to the die receiving plate 50.
  • each level plate 1, 33 has two (2) lifting cylinders 4, 47.
  • Each lifting cylinder 4, 47 extends through the base plate 49 along the axial direction 5 to a connection 34, 46 on the plane plate 1, 33.
  • the connections 34, 46 of the lifting cylinders 4, 47 on a plane plate can be seen on one arranged at the same height 29.
  • the level plates 1, 33 of the press tool 2 each have eight cylindrical guide surfaces 7, 31, 35 for contacting eight guide columns 8, 37 common to the level plates 1, 33.
  • a first level plate 1 has a first guide surface 7 with a first lower end 28 and the second level plate 33 has a third guide surface 35 with a third lower end 36.
  • the first plane plate 1 is above the second in the axial direction 5
  • Level plate 33 can be arranged and the level plates 1, 33 can be arranged relative to one another in such a way that the first guide surface 7 is a first guide column 8 of the common guide columns 8, 37 and the third guide surface 35 is a (different, i.e.) second guide column 37 of the common guide columns 8, 37 contacted.
  • the first lower end 28 is arranged below the third lower end 36 relative to the axial direction 5 (see 15 and 16 ).
  • Fig. 17 shows a level plate 1 of the press tool 2 Fig. 13 to 16 in a perspective view.
  • Fig. 18 shows level plate 1 Fig. 17 in a view from above along the axial direction 5.
  • Fig. 19 shows level plate 1 17 and 18 in a side view.
  • Fig. 20 shows level plate 1 Fig. 17 to 19 in a side view in section XX-XX according to Fig. 18.
  • Fig. 21 shows level plate 1 Fig. 17 to 20 in a side view in section XXI-XXI according to Fig. 18 .
  • the Fig. 17 to 21 are described together below. On the comments on the Fig. 13 to 16 and 6 to 9 are referenced.
  • the level plate 1 shown is actuated via two lifting cylinders 4, 47, with the first level plate 1 having a connection 34, 46 for each lifting cylinder 4, 47.
  • the level plate 1 has eight cylindrical guide surfaces 7, 31, each guide surface 7, 31 each contacting a guide column 8, 37, a cylindrical first guide surface 7 having a first lower end 28 and a cylindrical second guide surface 31 having a second lower end 32 ( please refer Fig. 21 ), wherein the first lower end 28 and the second lower end 32 are arranged at heights 29 that differ from one another relative to the axial direction 5.
  • the lower ends 28, 32 are arranged on an underside 41 of the plane plate 1.
  • all four (4) first lower ends 28 of the first guide surfaces 7 are arranged at a common height.
  • all four (4) second lower ends 32 of the second guide surfaces are each arranged at a common height.
  • the first cylindrical guide surfaces 7 with the first lower ends 28 arranged at the common height 29 are arranged offset from one another in a circumferential direction 18 by 90 angular degrees (the second guide surfaces 31 as well; and thereby offset in a circumferential direction 18 by 45 angular degrees from the first guide surfaces 7 ).
  • the first level plate 1 has eight cylindrical guide surfaces 7, 31, with first guide surfaces 7 contacting first guide columns 8 and second guide surfaces 31 contacting second guide columns 37.
  • First cylindrical guide surfaces 7 each have a first lower end 28 and a first upper end 43, with second cylindrical guide surfaces 31 each having a second lower end 32 and a second upper end 45.
  • the first lower end 28 is arranged at a different height 29 relative to the axial direction 5 below the second lower end 32.
  • the first upper end 43 is arranged at a different height 29 relative to the axial direction 5 below the second upper end 45.
  • the first connection 34 and the second connection 46 have an upper connection surface 44 on the top 39.
  • the first upper end 43 and the upper connection surface 44 are arranged at heights 29 that differ from one another relative to the axial direction 5 and are therefore spaced apart from one another in the axial direction 5.
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second upper end 45 at a height 29 that is different from the axial direction 5.
  • the upper connection surface 44 is arranged along the axial direction 5 between the first upper end 43 and the second lower end 32 at a height 29 that is different from the axial direction 5.
  • the plane plate 1 has at least a first cross section 10 (e.g. shown in Fig. 20 ), which runs parallel to the axial direction 5 and along a radial direction 11 running perpendicular to the axial direction 5 between the receptacle 9 and the first guide surface 7, at least a first region 12 in which a wall thickness 13 of the plane plate 1 changes continuously.
  • the wall thickness 13 is determined in a direction parallel to the axial direction 5.
  • This wall thickness 13 changes continuously, i.e. H. at each mutually adjacent position along the radial direction 11, the first region 12 has a different wall thickness 13.
  • the first region 12 has a first center line 21 in the first cross section 10, the first center line 21 running at a first angle 22 to the radial direction 11.
  • the first center line 21 is formed by the center points of the wall thickness 13 present at the respective radial position.

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Claims (11)

  1. Plaque plane (1) pour un outil de presse (2) d'une presse (3) ; la plaque plane (1) étant apte à être déplacée par au moins un vérin de levage (4) le long d'une direction axiale (5) pour l'actionnement d'un poinçon (6) de la presse (3), la plaque plane (1) présentant un moyen de liaison (34) pour ledit au moins un vérin de levage (4), au moins une surface de guidage (7, 31) au moins partiellement cylindrique, parallèle à la direction axiale (5), destinée à être mise au contact d'une colonne de guidage (8, 38) et un logement (9) agencé de manière centrale destiné à être mis en contact du poinçon (6) ou d'un porte-poinçon de la presse (3) ; la plaque plane (1) présentant, dans au moins une première section transversale (10) qui s'étend parallèlement à la direction axiale (5) et le long d'une direction radiale (11) perpendiculaire à la direction axiale (5) entre le logement (9) et la surface de guidage (7, 31), au moins une première zone (12) dans laquelle une épaisseur de paroi (13) de la plaque plane (1) varie de façon continue ; caractérisée en ce que la plaque plane (1) présente une face supérieure (39) orientée dans une première direction axiale (38) et une face inférieure (41) orientée dans une deuxième direction axiale (40) opposée à la première direction axiale (38) ; la face supérieure (39) et la face inférieure (41) s'étendant dans la première zone (12) de la première section transversale (10) selon un premier angle (22) d'au moins 10 degrés et selon un premier angle (22) d'au plus 80 degrés par rapport à la direction radiale (11).
  2. Plaque plane (1) selon la revendication 1, dans laquelle la première zone (12) s'étend dans la direction radiale (11) sur une première extension (14) qui représente au moins 10 % d'une distance minimale (15) entre le logement (9) et la surface de guidage (7, 31) dans la première section transversale (10) le long de la direction radiale (11).
  3. Plaque plane (1) selon la revendication 2, la plaque plane (1) étant agencée dans au moins une deuxième section transversale (16) qui s'étend le long de la direction radiale (11) entre le logement (9) et la surface de guidage (7, 31) et qui est tournée par rapport à la première section transversale (10) d'une zone angulaire (17) dans une direction circonférentielle (18), présente au moins une deuxième zone (19) dans laquelle l'épaisseur de paroi (13) de la plaque plane (1) varie de façon continue, la deuxième zone (19) s'étendant dans la direction radiale (11) sur une deuxième extension (20) qui est différente de la première extension (14).
  4. Plaque plane (1) selon l'une des revendications précédentes, dans laquelle l'épaisseur de paroi (13) varie d'au moins 5 % au moins dans la première zone (12).
  5. Plaque plane (1) selon l'une quelconque des revendications précédentes, dans laquelle au moins la première zone (12) présente une première ligne centrale (21) dans la première section transversale (10), la première ligne centrale (21) s'étendant selon un premier angle (22) d'au moins 10 degrés par rapport à la direction radiale (11).
  6. Plaque plane (1) selon la revendication 5, dans laquelle la plaque plane (1) présente dans la première section transversale (10) une troisième zone (25) se raccordant à la première zone (12) dans la direction radiale (11), la troisième zone (25) présentant une troisième ligne médiane (26), la troisième ligne médiane (26) s'étendant selon un troisième angle (27) d'au moins 10 degrés par rapport à la direction radiale (11), le premier angle (22) et le troisième angle (27) étant orientés en sens inverse par rapport à la direction radiale (11).
  7. Plaque plane (1) selon la revendication 6, dans laquelle une première surface de guidage (7) présente une première extrémité inférieure (28) et une deuxième surface de guidage (31) présente une deuxième extrémité inférieure (32) ; la première section transversale (10) s'étendant à travers la surface de guidage (7, 31) et l'extrémité (28, 32) de la surface de guidage (7, 31) étant agencée à une hauteur (29) par rapport à la direction axiale (6), une zone de retournement (30) de la plaque plane (1) étant agencée dans la première section transversale (10) entre la première zone (12) et la troisième zone (25), cette zone de retournement (30) étant agencée au-dessous de l'extrémité inférieure (28, 32) de la surface de guidage (7, 31) par rapport à la direction axiale (5).
  8. Plaque plane (1) selon l'une des revendications précédentes, la plaque plane (1) présentant au moins deux surfaces de guidage (7, 31) au moins partiellement cylindriques destinées à être chacune mises au contact d'une colonne de guidage (8), une première surface de guidage (7) au moins partiellement cylindrique présentant une première extrémité inférieure (28) et une deuxième surface de guidage (31) au moins partiellement cylindrique présentant une deuxième extrémité inférieure (32), la première extrémité inférieure (28) et la deuxième extrémité inférieure (32) étant agencées à des hauteurs (29) différentes l'une de l'autre par rapport à la direction axiale (5).
  9. Outil de presse (2) pour une presse (3), comprenant au moins une première plaque plane (1) et une deuxième plaque plane (33), au moins la première plaque plane (1) aptes à être déplacée par au moins un vérin de levage (4) le long d'une direction axiale (5) pour l'actionnement d'un poinçon (6) de la presse (3) ; au moins la première plaque plane (1) présentant un moyen de liaison (34) pour ledit au moins un vérin de levage (4), chaque plaque plane (1, 33) présentant au moins une surface de guidage (7, 31) respective au moins partiellement cylindrique destinée à être mise au contact d'une colonne de guidage (8, 37) commune aux plaques planes (1) et respectivement un logement (9) agencé de manière centrale pour la mise en contact du poinçon (6) ou d'un porte-poinçon de la presse (3) ; les plaques planes (1, 33) sont aptes à être agencées les unes au-dessus des autres le long d'une direction axiale (5), de sorte que les au moins une surface de guidage (7, 31) de chaque plaque plane (1, 33) sont agencées coaxialement les unes par rapport aux autres ; au moins la première plaque plane (1) étant une plaque plane (1) selon l'une des revendications précédentes ; les plaques planes (1, 33) sont aptes à être agencées le long de la direction axiale (5) et le long de la direction radiale (11) en se chevauchant au moins partiellement.
  10. Outil de presse (2) selon la revendication 9, dans lequel les plaques planes (1, 33) présentent chacune au moins deux surfaces de guidage (7, 31) au moins partiellement cylindriques destinées à être mises au contact de deux colonnes de guidage (8, 37) communes aux plaques planes (1, 33) ; la première plaque plane (1) présente une première surface de guidage (7) au moins partiellement cylindrique avec une première extrémité inférieure (28) et la deuxième plaque plane (33) présente une troisième surface de guidage (35) au moins partiellement cylindrique avec une troisième extrémité inférieure (36), la première plaque plane (1) étant apte à être agencée au-dessus de la deuxième plaque plane (33) par rapport à la direction axiale (5) et les plaques planes (1, 33) étant aptes à être agencées l'une par rapport à l'autre de telle sorte que la première surface de guidage (7) entre en contact avec une première colonne de guidage (8) des colonnes de guidage communes (8, 37) et la troisième surface de guidage (35) entre en contact avec une deuxième colonne de guidage (37) des colonnes de guidage communes (8, 37) ; la première extrémité inférieure (28) étant alors agencée en dessous de la troisième extrémité inférieure (36) par rapport à la direction axiale (5).
  11. Utilisation d'une plaque plane dans un outil de presse (2) d'une presse (3) pour la fabrication d'un produit vert ; la plaque plane (1) est apte à être déplacée par au moins un vérin de levage (4) le long d'une direction axiale (5) pour l'actionnement d'un poinçon (6) de la presse (3) ; la plaque plane (1) présentant un moyen de liaison (34) pour ledit au moins un vérin de levage (4), au moins une surface de guidage (7, 31) au moins partiellement cylindrique parallèle à la direction axiale (5) destinée à être mise au contact d'une colonne de guidage (8, 38) et un logement (9) agencé de manière centrale, destiné à être mis au contact du poinçon (6) ou d'un porte-poinçon de la presse (3) ; la plaque plane (1) présentant au moins une première zone (12) dans au moins une première section transversale (10) qui s'étend parallèlement à la direction axiale (5) et le long d'une direction radiale (11) perpendiculaire à la direction axiale (5) entre le logement (9) et la surface de guidage (7, 31), dans laquelle une épaisseur de paroi (13) de la plaque plane (1) varie de façon continue, caractérisée en ce que la plaque plane (1) présente une face supérieure (39) orientée dans une première direction axiale (38) et une face inférieure (41) orientée dans une deuxième direction axiale (40) opposée à la première direction axiale (38) ; la face supérieure (39) et la face inférieure (41) s'étendant dans la première zone (12) de la première section transversale (10) selon un premier angle (22) d'au moins 10 degrés et selon un premier angle (22) d'au plus 80 degrés par rapport à la direction radiale (11).
EP18735569.8A 2017-06-29 2018-06-29 Plaque plane d'un outil de presse Active EP3645261B1 (fr)

Applications Claiming Priority (2)

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DE102017114456.0A DE102017114456B4 (de) 2017-06-29 2017-06-29 Ebenenplatte eines Pressenwerkzeugs
PCT/EP2018/067687 WO2019002598A1 (fr) 2017-06-29 2018-06-29 Plaque plane d'un outil de presse

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EP3645261A1 EP3645261A1 (fr) 2020-05-06
EP3645261B1 true EP3645261B1 (fr) 2023-11-08

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EP (1) EP3645261B1 (fr)
JP (1) JP7138669B2 (fr)
CN (1) CN110997298B (fr)
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WO (1) WO2019002598A1 (fr)

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DE102014003726A1 (de) * 2014-03-18 2015-09-24 Gkn Sinter Metals Engineering Gmbh Presse zum Herstellen maßhaltiger Grünlinge und Verfahren zum Herstellen
EP4079427A1 (fr) * 2021-04-22 2022-10-26 GKN Sinter Metals Engineering GmbH Procédé de détermination d'un paramétré d'une matière et outil de compression destiné à la fabrication d'un comprimé cru

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* Cited by examiner, † Cited by third party
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JPH07115233B2 (ja) 1990-08-10 1995-12-13 株式会社ヨシツカ精機 粉末成形プレス
JPH05140609A (ja) * 1991-02-08 1993-06-08 Keita Hirai 段付品汎用成型プレス
JPH0818158B2 (ja) * 1993-06-29 1996-02-28 株式会社ヨシツカ精機 粉末成形プレス
US6165400A (en) 1996-05-09 2000-12-26 Stackpole Limited Compacted-powder opposed twin-helical gears and method
CN1147395C (zh) 2001-02-28 2004-04-28 朱锦忠 粉末成型液压机
DE10254656B4 (de) 2002-11-22 2005-10-13 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung zum Herstellen maßhaltiger Presslinge mit zentraler Stempelabstützung
CN1218801C (zh) * 2003-07-15 2005-09-14 华南理工大学 多层模板粉末压制成形模架
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JP2006180323A (ja) * 2004-12-24 2006-07-06 Mitsubishi Electric Corp 携帯電話端末装置
JP2009291830A (ja) 2008-06-06 2009-12-17 Hitachi Powdered Metals Co Ltd 粉末成形装置
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CN102554225A (zh) * 2012-02-28 2012-07-11 南通富仕液压机床有限公司 一种粉末冶金成型下二点五、三点五模架
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Publication number Publication date
JP7138669B2 (ja) 2022-09-16
WO2019002598A1 (fr) 2019-01-03
US20200122423A1 (en) 2020-04-23
CN110997298A (zh) 2020-04-10
JP2020525293A (ja) 2020-08-27
DE102017114456A1 (de) 2019-01-03
US11148382B2 (en) 2021-10-19
EP3645261A1 (fr) 2020-05-06
DE102017114456B4 (de) 2019-08-08
CN110997298B (zh) 2023-06-16

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