EP2776238A1 - Presse à poudre métallique et/ou céramique comprenant un sabot de remplissage et des conduites de remplissage et procédé pour réaliser une pièce comprimée dans une presse de ce type - Google Patents

Presse à poudre métallique et/ou céramique comprenant un sabot de remplissage et des conduites de remplissage et procédé pour réaliser une pièce comprimée dans une presse de ce type

Info

Publication number
EP2776238A1
EP2776238A1 EP12813254.5A EP12813254A EP2776238A1 EP 2776238 A1 EP2776238 A1 EP 2776238A1 EP 12813254 A EP12813254 A EP 12813254A EP 2776238 A1 EP2776238 A1 EP 2776238A1
Authority
EP
European Patent Office
Prior art keywords
filling
shoe
filling shoe
movement
lines
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.)
Withdrawn
Application number
EP12813254.5A
Other languages
German (de)
English (en)
Inventor
Roland Menzel
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.)
DORST Technologies GmbH and Co KG
Original Assignee
DORST Technologies GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DORST Technologies GmbH and Co KG filed Critical DORST Technologies GmbH and Co KG
Publication of EP2776238A1 publication Critical patent/EP2776238A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/004—Filling molds with powder
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/023—Feeding the moulding material in measured quantities from a container or silo by using a feed box transferring the moulding material from a hopper to the moulding cavities
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62695—Granulation or pelletising
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/604—Pressing at temperatures other than sintering temperatures

Definitions

  • the invention relates to a ceramic and / or
  • Metal powder press which has a die with a
  • the invention relates to a method for pressing a
  • Pressed body with in particular such a press Pressed body with in particular such a press.
  • Such presses and methods are known from, for example, EP 1 000 735 A2.
  • a so-called filling shoe is adjustable over a die surface of the die in the longitudinal direction.
  • a guide device such as a
  • Die opening moves to fill powder in the die opening.
  • the powder is usually from a container, in particular a powder silo by means of filling lines in the press shoe and from this or through this in the
  • the filling lines end in a filling shoe interior, which may optionally be formed large enough to accommodate a full amount of filling, as required for pressing a compact in a subsequent process step.
  • the filling shoe is included optionally moved a short distance beyond the die opening before it is moved back from such a second rest and / or reversing position in the first rest and reverse position. After that, stamps become an upper one
  • Stamp assembly lowered to the filled in the die opening powder by stamping a lower
  • a duration of a pressing cycle extends, for example, from a first start of the filling shoe from its first resting and reversing position to its next start from this position.
  • the components for pressing are expensive components of such a press assembly and the essential step, namely the pressing of
  • the duration is considered as loss time during which the stamp of the upper press assembly are not in action, especially not in contact with powder.
  • a disadvantage of such an arrangement is, in particular, that in order to build up a sufficient filling pressure within the one or more filling lines, the filling lines should lead as steeply as possible upwards. However, this requires that in the filling position with the filling shoe above the die opening the filling lines protrude far up and require a corresponding amount of space upwards. As a result, the upper punch arrangement must be adjusted far upwards.
  • the filling lines are to enable as possible
  • Such a filling device is also generally known from DE 199 03 417 B4.
  • a filling shoe is guided from its first rest and reverse position to the front over the die opening and then swung back and forth in the lateral direction and thereby laterally completely over the
  • Transverse movements during a filling process can be performed and these transversal movements with a back and forth
  • Movement of the filling shoe can be superimposed from its rest position to the position above the die opening. This should serve to achieve a uniform powder distribution in the die opening.
  • the object of the invention is to improve a ceramic and / or metal powder press such that a loss time is reduced, in particular a cycle time for pressing a compact can be reduced.
  • a ceramic and / or metal powder press which is a die with a
  • Matrizenober construction is arranged movably, and having filling lines, which is used to fill the material in or through the
  • Secondschuh are connected to the filling shoe, wherein at least two such filling lines are connected to the path of movement lateral direction with the filling shoe.
  • Moving the filling shoe over the die opening is also understood in particular to mean that the filling shoe, with possibly already a sufficient amount of material, is moved in its interior over the die surface in such a way that a material located in its interior space can not pass between the filling shoe and the die surface.
  • the filling lines can be directly over the
  • Matrizenober Design be designed reaching when only when adjusting above the die opening the material to be pressed is passed through the filling lines.
  • any further embodiments can be implemented, in particular those as they are already known per se.
  • the filling lines can be configured in particular in the form of bendable hoses in order to ensure as undisturbed movement of the filling shoe over the
  • Filling lines with the filling shoe can be used in a variety of known in particular per se manner
  • filling lines are connected to the lateral direction of movement with the filling shoe, is understood in particular that the filling lines from a direction transverse to the trajectory, so do not lead from the front or rear parallel to the path to the filling shoe and are arranged on this. But even obliquely to the path of movement to the filling shoe extending filling lines may still fall below, if so in particular still sufficient
  • Such compacts are understood to mean, in particular, technical compacts made of technical ceramics or metal, such as toothed wheels. Preferred is such a press, wherein the
  • Filling lines are connected laterally to the trajectory between approached during the pressing reversal points or between a filling and an approached during the pressing reversal point to the filling shoe.
  • laterally to the trajectory defined depending on the fact that the trajectory either runs between approached during pressing reversal points on two opposite sides of the die opening or runs between a filling position and approached during the pressing reversal point.
  • the filling shoe can be free of connected filling lines at its peripheral sides transversely to the movement path.
  • an arrangement of filling lines can thus take place on a side wall which runs parallel to the movement path. But even at an angle thereto extending sidewalls of the Rossschuhs such
  • the filling lines on a side wall of the filling shoe at a distance from a central line of movement along the path of movement
  • Filling shoe is moved only in a straight line. However, this may also include movements across the central
  • Movements of the filling shoe to achieve a more uniform powder distribution may be desired.
  • a distance from the point of attachment of the filling lines on the side wall of the filling shoe to the central line of movement is in particular a distance of an inner side wall of a Filling shoe interior to the central line of movement,
  • outside sidewall points of the outside can also be used
  • such a press wherein at least one of the filling lines is connected laterally right to the movement path with the filling shoe and at least one of the filling lines is connected laterally left to the movement path with the filling shoe.
  • a possible uniform arrangement of the filling lines laterally right and laterally left to the movement path causes a uniform influence on the movement of the filling shoe to the right and left to its main direction of movement, while the filling shoe is moved with the filling lines attached thereto.
  • a process for pressing a pressed body of metallic and / or ceramic powdery and / or granular material in which in a
  • Stamping arrangements is pressed, the method in such a ceramic and / or metal powder press
  • the method is thus carried out in a press in which the filling shoe at its lateral walls laterally to the movement path of the filling shoe, the filling lines or
  • a method is preferred in which in a ceramic and / or metal powder press the filling shoe during a pressing cycle of a first resting and / or
  • Reversing position is adjusted and only in a subsequent pressing cycle in the opposite direction back to the first rest and / or reversing position is adjusted.
  • the filling shoe advances the die opening in the first pressing cycle forward and only after pressing - in particular a pre-pressing or a final pressing or
  • the filling shoe must first be decelerated to a rest position or reversing position and then accelerated in the reverse direction back to its first rest and reversing position.
  • no teaching is required at which the filling shoe is optionally even moved a bit beyond the die opening to its second reversing position, before it during the same cycle in the reverse direction back to its first resting and
  • Reversing position is moved.
  • a uniform powder distribution can be achieved.
  • in comparison to a complete driving out of the filling shoe on the die opening and then go back in the same pressing cycle results in comparison to a preferred here moving the Greschuhs during the same
  • such methods can be implemented, in which the filling shoe is moved continuously during the movement over the die opening, in particular during the entire movement between its reversal positions.
  • continuous is understood to mean, in particular, that it is a continuous speed of the filling shoe in the area of the die opening in order to produce a uniform flow To achieve powder distribution.
  • a data carrier with a program stored thereon is also preferred.
  • Such a control device may be a control device commonly used for moving the filling shoe within a press, which is used to perform a
  • Motion sequence of different press components is designed depending on such a control program.
  • Control device can be designed as a pure control device in the sense of a processor, but can also be made a combination of so-called hardware and software controllable components.
  • Fig. 1 is a plan view of a die of a
  • FIG. 2 shows the arrangement of FIG. 1 in a side view
  • FIG. 1 and 2 show schematically components of a press for pressing a sketched in Fig. 3 compact body 12.
  • the compact is pressed from at least one metallic and / or ceramic powder and / or granular material p.
  • a die 1 is arranged, which has a die opening 2.
  • the die opening 2 is used for filling the powdery and / or granular material p, in particular ceramic powder and / or metal powder, by means of a filling device. Under such a material or powder is to be understood in a broader sense, a granulate or a mixture of fine-grained powder and granular material.
  • the filling device has a filling shoe 3, which is placed on the die surface lo of the die 1.
  • the filling shoe 3 is movable or movable along a movement path 4 over the die surface 10.
  • the second resting and / or reversing position p3 is located beyond the die opening 2.
  • the resting and / or reversing position is to be understood in particular as meaning a rest and reversing position or a pure reversing position.
  • Both resting and / or reversing positions p1, p3 are located so far from the die opening 2 that pressing of a compact can take place in the die opening 2, while the filling shoe 3 and components coupled thereto or fastened at least in the rest and / or or or
  • a guide device 5 is used, which is fastened or coupled to the filling shoe 3
  • the filling shoe 3 is movable over the die surface.
  • the filling device also has at least two filling lines 7, 8, which serve to powder or
  • Granules or a mixture thereof from a powder container in or through the filling shoe 3 or direct into the die opening 2.
  • the first of the filling lines 7 is arranged on the left side of the filling shoe 3, while the second of the filling lines 8
  • the filling lines 7, 8 are preferably designed as filling hoses made of a bendable material in order to be able to be moved together with the filling shoe 5 by means of the guide device 5.
  • the filling lines 7, 8 can in this case in any manner, in particular in a manner known per se, be firmly connected to the body of the filling shoe 3 or else only be coupled to the filling shoe 3.
  • a fastening or coupling point of the filling lines 7, 8 is arranged in particular so far laterally of the movement path 4 or a central line of movement along the movement path 4 on the filling shoe 3 the distance d3 from the central line of movement is greater than the lateral extent d2 of the die opening 2 transverse to the central line of movement.
  • the distance d3 is in particular a distance to a
  • Trajectory 4 runs.
  • the side wall 11 is not a front or rear wall or a corresponding portion of the filling shoe from the viewpoint of the direction of movement of the filling shoe 3.
  • the side wall can, depending on the perspective as an outside point of the side wall 11 or as an inside point of Sidewall 11 can be viewed.
  • the filling line 7, 8 through the side wall 11 extends through a piece into a Medschuhinnenraum 6 of the filling shoe 3, under the side wall and the one point to be understood, at which the filling lines 7, 8 open in the Greschuh- interior 6.
  • Fig. 1 it is shown that the filling lines 7, 8 are arranged at an angle ⁇ of about 90 ° to the movement path 4 attached to the filling shoe 3 or coupled. As sketched in FIG. 2, however, such a coupling can optionally also take place at a different angle ⁇ , in particular at an angle greater than 45 ° up to 90 °. In addition, in such a sense, a lateral side wall 11 of the
  • one or more lower-side punches of a lower-side punch arrangement 9 protrude into the die opening 2 and close the die opening 2 downwards.
  • the underside stamps shown by way of example are
  • Stamp assembly 10 compressed and pressed to the compact 12. These are the top-side stamp of introduced above into the die opening 2, wherein the example of several upper-side punch in particular by means of driving means relative to each other and relative to the die 1 are adjustable.
  • Filling lines 7, 8 moves from its first reversing position or rest and reverse position pl at a first time in the direction of the die opening. Up to one
  • Fill shoe 3 with its attached and coupled components can be moved over the die opening 2.
  • Stamp assembly 10 and the filling shoe 3 while also partially overlaid each other.
  • Die opening 2 is further moved to the spaced second rest and / or reversing position p3, which also allows pressing of the compact 12.
  • the pressing is carried out, whereby previously no reversal and no
  • Fig. 3 can be removed, in which only in

Abstract

L'invention concerne une presse à poudre métallique et/ou céramique, présentant une matrice (1) pourvue d'une surface de matrice (1o) et d'une ouverture de matrice (2) pour le remplissage et la compression d'une matière, un sabot de remplissage (3) qui est disposé de façon à pouvoir être déplacé le long d'une trajectoire de déplacement (4) sur la surface de matrice (1o) pour le remplissage de la matière (p), ainsi que des conduites de remplissage (7, 8) qui sont reliées au sabot de remplissage (3) pour le remplissage de la matière, au moins deux de ces conduites de remplissage (7, 8) étant reliées au sabot de remplissage (3) dans la direction transversale à la trajectoire de déplacement. L'invention concerne en outre un procédé pour réaliser une pièce comprimée (12) à partir d'une matière (p) sous forme de granulat et/ou de poudre métallique et/ou céramique dans une presse à poudre métallique et/ou céramique de ce type.
EP12813254.5A 2011-11-12 2012-11-09 Presse à poudre métallique et/ou céramique comprenant un sabot de remplissage et des conduites de remplissage et procédé pour réaliser une pièce comprimée dans une presse de ce type Withdrawn EP2776238A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110118209 DE102011118209A1 (de) 2011-11-12 2011-11-12 Keramik- und/oder Metallpulverpresse mit einem Füllschuh und Füllleitungen und Verfahren zum Pressen eines Presskörpers in einer solchen Presse
PCT/DE2012/001082 WO2013067994A1 (fr) 2011-11-12 2012-11-09 Presse à poudre métallique et/ou céramique comprenant un sabot de remplissage et des conduites de remplissage et procédé pour réaliser une pièce comprimée dans une presse de ce type

Publications (1)

Publication Number Publication Date
EP2776238A1 true EP2776238A1 (fr) 2014-09-17

Family

ID=47552716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12813254.5A Withdrawn EP2776238A1 (fr) 2011-11-12 2012-11-09 Presse à poudre métallique et/ou céramique comprenant un sabot de remplissage et des conduites de remplissage et procédé pour réaliser une pièce comprimée dans une presse de ce type

Country Status (7)

Country Link
US (1) US10583480B2 (fr)
EP (1) EP2776238A1 (fr)
JP (1) JP6141296B2 (fr)
KR (1) KR102073415B1 (fr)
CN (1) CN104203553B (fr)
DE (1) DE102011118209A1 (fr)
WO (1) WO2013067994A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011007728A1 (de) * 2011-04-20 2012-10-25 Hilti Aktiengesellschaft Vorrichtung und Verfahren zum Herstellen eines Grünlings aus einem pulver- oder granulatförmigen Werkstoff
KR102181907B1 (ko) 2014-07-30 2020-11-23 현대모비스 주식회사 차량용 에어백 장치
CN112272544A (zh) 2018-08-02 2021-01-26 义获嘉伟瓦登特公司 用于牙科目的的多色坯料

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JPH07242907A (ja) * 1994-02-28 1995-09-19 Mitsubishi Materials Corp 粉末成形装置のシューボックス
JP2004291070A (ja) * 2003-03-28 2004-10-21 Hitachi Powdered Metals Co Ltd 多層圧粉体の成形方法および成形装置

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JPS6046302A (ja) * 1983-08-25 1985-03-13 Mitsubishi Motors Corp 鉄粉供給装置
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JPH06210496A (ja) * 1991-12-20 1994-08-02 Mitsubishi Materials Corp 給粉装置および給粉方法
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JP2004291070A (ja) * 2003-03-28 2004-10-21 Hitachi Powdered Metals Co Ltd 多層圧粉体の成形方法および成形装置

Also Published As

Publication number Publication date
DE102011118209A1 (de) 2013-05-16
US10583480B2 (en) 2020-03-10
WO2013067994A1 (fr) 2013-05-16
KR20140097357A (ko) 2014-08-06
CN104203553A (zh) 2014-12-10
JP6141296B2 (ja) 2017-06-07
JP2015504370A (ja) 2015-02-12
CN104203553B (zh) 2016-10-26
KR102073415B1 (ko) 2020-02-04
US20150118339A1 (en) 2015-04-30

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