EP1083125A2 - Procédé et dispositif pour compacter du matériau - Google Patents

Procédé et dispositif pour compacter du matériau Download PDF

Info

Publication number
EP1083125A2
EP1083125A2 EP00119314A EP00119314A EP1083125A2 EP 1083125 A2 EP1083125 A2 EP 1083125A2 EP 00119314 A EP00119314 A EP 00119314A EP 00119314 A EP00119314 A EP 00119314A EP 1083125 A2 EP1083125 A2 EP 1083125A2
Authority
EP
European Patent Office
Prior art keywords
air
pressure state
container
pressure
state
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Withdrawn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
EP00119314A
Other languages
German (de)
English (en)
Other versions
EP1083125A3 (fr
Inventor
Masato Sagawa
Hiroshi Nagata
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.)
Intermetallics Co Ltd
Original Assignee
Intermetallics Co Ltd
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 Intermetallics Co Ltd filed Critical Intermetallics Co Ltd
Publication of EP1083125A2 publication Critical patent/EP1083125A2/fr
Publication of EP1083125A3 publication Critical patent/EP1083125A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
    • B65B63/028—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles by pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • B65B1/26—Reducing volume of filled material by pneumatic means, e.g. suction

Definitions

  • the present invention relates to a packing method and a packing apparatus in which a powder, a granular material, a material in flakes, a plate material or the like (hereinafter collectively referred to as the "material”) is injected into a container or receptacle such as a can, a bag, a rubber mold, a die or the like (hereinafter collectively referred to as the "container") which has an opening for feeding the material and a space of which is filled with said powder or the like.
  • a container or receptacle such as a can, a bag, a rubber mold, a die or the like
  • a part (1) shown in Fig. 5 is a cylindrical die, and part (2) is a punch inserted into the die (1) (hereinafter this punch is referred to as the "lower punch”).
  • a powder is to be filled into a die cavity (3) which is a space formed with the die (1) and the lower punch (2).
  • a table (4) is arranged so that its upper surface is flush with the upper surface (1a) of the die (1).
  • a box-shaped, bottomless feeding element (hereinafter referred to as the "feed shoe”) (5) is mounted on the table (4).
  • the external wall of the receded part of the feed shoe (5) is provided with a pipe (6), which is connected to an aspirator-type vacuum generator (7).
  • a pipe (8) connected to the external wall (5a) of the feed shoe (5) is connected to a compressed air supplier (10) through an electromagnetic valve (9).
  • a part (11) is a cover attached to the upper opening of the part (5a) of the feed shoe (5).
  • the feed shoe (5) is loaded with a powder (p).
  • a horizontal cylinder (12) is attached to the table (4), and a piston rod (12a) attached to the horizontal cylinder is connected to the feed shoe (5).
  • the feed shoe (5) mounted on the table (4) is moved by driving the horizontal cylinder (12) so as to move the piston rod (12a) until the feed shoe (5) is located above the die cavity (3) as shown in Fig. 6. Then, the powder (5) stored in the feed shoe (5) falls into the die cavity (3).
  • the aspirator-type vacuum generator (7) is energized with the electromagnetic valve (9) being closed so that air in the feed shoe (5) is let out, thereby changing the air-pressure inside the feed shoe (5) from the atomospheric state (a) to a state lower than the atmospheric pressure (b).
  • Figure 7 shows an example in which the lower state (b) is 0.5 atm.
  • the air-pressure inside the feed shoe is brought into 0.8 atm, which is higher than the air-pressure state (b).
  • the electromagnetic valve (9) is again closed and the aspirator-type vacuum generator (7) is energized so that the inside of the feed shoe (5) is brought into a state (b) lower than the atmospheric pressure.
  • operation of the aspirator-type vacuum generator (7) is stopped and electromagnetic valve (9) is opened so that the inside of the feed shoe (5) is supplied with compressed air, thereby changing the state inside the feed shoe (5) from the air-pressure state (b) to a air-pressure state (c) higher than the air-pressure state (b),
  • the die cavity (3) formed with the die (1) and lower punch (2) inserted therein may be filled with the powder (p) homogeneously and highly densified.
  • the horizontal cylinder (12) is moved so as to retract the piston rod (12a), thereby relocating the feed shoe (5) away from the die cavity (3).
  • an upper punch (not shown in the Figure) is inserted into the die (1) and lowered to press the powder (p) packed in the die cavity (3) so as to obtain a powder compact.
  • air tapping is carried out by the repetition of switching the air-pressure state from a state (b), which is lower than the atmospheric pressure, to a state (c), which is higher than the state (b), a problem arises when the air-pressure inside the feed shoe (5) becomes lower than the atmospheric pressure. That is, the air outside the die cavity (3) flows into the die cavity (3) through the clearance between the internal wall (1b) of the die (1) and the external wall (2a) of the lower punch (2), which blows up the powder (p) packed in the die cavity (3).
  • the present inventors devised a new packing method in which air tapping is carried out by switching the air-pressure state of a space comprising a container and a space part connected with said container from a low air-pressure state to a high air-pressure state several times while keeping said low air-pressure state equal to or higher than the atmospheric pressure outside said space, as well as an apparatus comprising a means for bringing the air-pressure state of said space into an air-pressure state which is higher than the atmospheric pressure outside said space, and a means for bringing the space that has been at an air-pressure state higher than the atmospheric pressure into an air-pressure state lower than said state but equal to or higher than the atmospheric pressure outside said space.
  • a pipe (8) attached to the external wall of the receded part (5a) of the feed shoe (5) is connected to a compressed air supplier (10) through an electromagnetic valve (9).
  • the part (13) is a pressure-releasing valve that is attached to a pipe (6) connected to the external wall of the receded part (5a) of the feed shoe (5).
  • the pressure-releasing valve (13) is designed to exhaust the air inside the feed shoe (5) when the air-pressure inside the feed shoe (5) becomes higher than a certain degree that is higher than the atmospheric pressure.
  • An air-releasing hole (14) is formed in the wall of the receded part (5a) of the feed shoe (5).
  • the feed shoe (5) mounted on the table (4) is moved by driving the horizontal cylinder (12) so as to move the piston rod (12a) until the feed shoe 5 is located above the die cavity (3) as shown in Fig. 6. Then, the powder (5) stored in the feed shoe (5) falls into the die cavity (3).
  • the electromagnetic valve (9) is opened to supply compressed air from the compressed air supplier (10) into the feed shoe (5) so that the air-pressure inside the feed shoe (5) is brought into an air-pressure state (BO) that is higher than the atmospheric pressure (AO) as shown in Fig. 2 in which said air-pressure state (BO) is 1.3 atm.
  • BO air-pressure state
  • AO atmospheric pressure
  • the electromagnetic valve (9) is closed so as to stop air supply from the compressed air supplier (10) into the feed shoe, and the air inside the feed shoe (5) at a high air-pressure state (BO) is naturally let out from the air-releasing hole (14), which brings the air-pressure inside the feed shoe (5) down to the atmospheric pressure as indicated by (A1) in Fig. 2.
  • the electromagnetic valve (9) is again opened so as to supply compressed air from the compressed air supplier (10) into the feed shoe (5), thereby bringing the air-pressure state inside the feed shoe (5) into an air-pressure state (B1) that is higher than the atmospheric pressure indicated by (A1). .
  • the powder (p) can be packed homogeneously and highly densified into the die cavity (3) formed with the die (1) and the lower punch (2) inserted therein.
  • the horizontal cylinder (12) is moved so as to retract the piston rod (12a), thereby relocating the feed shoe (5) away from the die cavity (3).
  • an upper punch (not shown in the Figure) is inserted into the die (1) and lowered to press the powder (p) packed in the die cavity (3) so as to obtain a powder compact.
  • air tapping is carried out by repetition of switching the air-pressure state from a state higher than the atmospheric pressure to a state of the atmospheric pressure so that air outside the die cavity (3) is not allowed to get into the die cavity (3) through the clearance between the internal wall (1b) of the die and external wall (2a) of the lower punch (2). Therefore, the problem that the powder (p) is blown up by the air may be prevented from occurring.
  • air tapping may be carried out by appropriate times of repetition of switching the air-pressure state from a state higher than the atmospheric pressure (higher state) to a state lower than said higher state but yet higher than the atmospheric pressure.
  • FIG. 3 an embodiment of the present invention in which the apparatus comprises a rubber mold with a cavity is now described.
  • a lower punch (16) is inserted into a cylindrical die (15).
  • the lower punch (2) comprises a part with a larger diameter and a part with a smaller diameter.
  • an inwardly protruded part of the die (15a) is fit so as to prevent the die (15) from sliding upward.
  • a rubber mold (17) is placed in a space (18) formed with the internal wall of the die (15) and the external wall of the lower punch (16).
  • the outer diameter of the rubber mold (17) is sized approximately the same as the inner diameter of the die (15).
  • a backup ring (19) made of hard synthetic resin is fit into the upper edge of the lower punch (16) so as to prevent the rubber mold being caught between the die (15) and the lower punch (16).
  • the lower punch (16) is fixed on a support table (20) with a bolt (21) inserted into a hole (20a) provided in the support table (20) so that the bolt (21) is fit into a bolthole (16c) in the bottom of the lower punch (16).
  • the lower part of the lower punch (16) has a smaller diameter than other parts in which a part (16b) is provided with some flat springs being inserted between the bottom surface of the die (15) and the upper surface of the support table (20).
  • the top surface of the rubber mold (17) is designed to nearly be flush with the top surface of the die (15).
  • a cylindrical guide element (23) is mounted on the top surfaces of the rubber mold (17) and die (15).
  • the bottom opening of the cylindrical guide (23) is provided with a grid element (24) comprising parallel wires, a mesh, a plate with many holes, or the like.
  • this grid element the present applicants have disclosed in a patent application, KOKAIH-11-90694, therefore, only a brief explanation will be made here.
  • the powder (p) is injected into the cavity (17a) of the rubber mold (17) through the grid element (24) while the air tapping process is carried out. After completion of the air tapping process, the guide element is lifted from the surfaces of the rubber mold (17) and the die (15), when the grid element (24) functions to prevent the powder (p) in the cylindrical guide element (23) from falling off.
  • the part denoted by (25) is an air-tapping device which comprises a body comprising a cylindrical part (25a') which has an opening bottom and a closed top, and a part horizontally protruding from the lower part of the cylindrical part (25a'), further comprising a first electromagnetic valve (25c) connected to the cylindrical part (25a') through a pipe (25d), a second electromagnetic valve (25e) connected to a compressed air supplier (25g) through a pipe (25f).
  • the cylindrical guide element (23) loaded with the powder (p) is mounted on the top surfaces of the rubber mold (17) and the die (15), and the air-tapping device (25) is mounted on the top of the cylindrical guide element.
  • the compressed air supplier (25g) is energized.
  • the second electromagnetic valve (25e) is opened to send compressed air into the cylindrical guide element (23) from the compressed air supplier (25g) so that the inside of the cylindrical guide element (23) becomes to be a high air-pressure state that is higher than the atmospheric pressure.
  • the second electromagnetic valve (25e) is closed and the first electromagnetic valve is opened at the same time so as to exhaust the air in a high air-pressure state and bring the inside of the cylindrical guide element back to the atmospheric-pressure-state.
  • the first electromagnetic valve (25c) is closed.
  • the second electromagnetic valve (25e) is reopened so as to send compressed air into the cylindrical guide element (23) and bring the inside of the cylindrical guide element (23) into a high air-pressure state that is higher than the atmospheric pressure.
  • the second electromagnetic valve (25e) is closed and the first electromagnetic valve (25c) is opened to let out the air at a high air-pressure state and bring the inside of the cylindrical guide element (23) back into the atmospheric-pressure-state, and then the first electromagnetic valve (25c) is closed.
  • the powder (p) in the cylindrical guide element (23) is injected through the grid element (24) into the cavity (17a) of the rubber mold (17).
  • the cylindrical guide element (23) and the air-tapping device (25) are detached and an upper punch which is not shown in the Figure is mounted on the top surfaces of the rubber mold (17) and die (15), and lowered. While the upper punch is being lowered, the die (15) is pressed down resisting the elasticity of the flat springs provided between the die (15) and the support table (20). Since the lower punch (16) supported by the support table (20) does not descend, the depth of the space formed with the inner wall of the die (15) and the upper surface of the lower punch (16) is reduced so as to allow the rubber mold (17) to shrink inwardly compressing the powder (p) packed inside the rubber mold (17), thereby producing a powder compact.
  • the air tapping process was carried out by switching the air-pressure state inside the cylindrical guide element (23) from a state lower than the atmospheric pressure (b) to a state higher than said state (c) alternately.
  • the air-pressure state inside the cylindrical guide element (23) and the cavity (17a) of the rubber mold (17) became to be lower than the atmospheric pressure, the atmospheric air existing between the external wall of the rubber mold (17) and the internal wall of the die (15) pushed the rubber mold (17), deforming the rubber mold (17) inwardly.
  • the air tapping process is carried out by switching the air-pressure state inside the cylindrical guide element (23) from a state higher than the atmospheric pressure to a state equal to the atmospheric state alternately, the external wall of the rubber mold (17) is pressed toward the internal wall of the die (15) when the air-pressure state inside the cylindrical guide element (23) and the cavity (17a) becomes higher than the atmospheric pressure. Deformation of the rubber mold (17) therefore does not occur, and the desired powder compact may be obtained in this invention.
  • the present invention prevents the powder (p) from getting blown up.
  • FIG. 4 An embodiment of the present invention in which a bag is packed with a material such as a powder, a glanular material and the like is hereinafter described referring to Fig. 4.
  • a bag-holding container (26) has an open top, and a bag (27) is set inside the bag-holding container (26).
  • the fringe (27a) of the opening of the bag (27) is placed upon the upper surface of the bag-holding container (26).
  • a cylindrical guide element is mounted on the top of the bag-holding container (26).
  • an air-tapping device (25') comprises a body (25h) comprising an open bottom and a top provided with a penetrating hole (25h'), a first electromagnetic valve (25j) connected to the side wall of the body (25h) through a pipe (25i), a second electromagnetic valve (25m) connected to the first electromagnetic valve (25j) through a pipe (25k), and a compressed air supplier (25p) connected to the second valve (25m) through a pipe (25n).
  • the bag (27) is set inside the bag-holding container (26) so that the fringe of the opening of the bag (27a) is placed upon the upper surface of the bag-holding container (26), and the cylindrical guide element (28) is mounted on the upper surface of the bag-holding container (26). Subsequently, a certain amount of the powder (p) is injected to fill the bag (27) and a part of the cylindrical guide element (28). Then, the air-tapping device (25') is mounted so as to cover the top opening of the cylindrical guide element (28).
  • the compressed air supplier (25p) is energized.
  • the second electromagnetic valve (25m) is then closed so that the compressed air having a pressure higher than atmospheric pressure that is supplied from the compressed air supplier (25p) is contained in the pipe (25k) between the first electromagnetic valve (25j) and the second electromagnetic valve (25m).
  • the first electromagnetic valve (25j) is opened with the second electromagnetic valve (25m) being closed so that the air contained in the pipe (25k) between the first electromagnetic valve (25j) flows into the air-tapping device (25'), which brings the air-pressure state inside the cylindrical guide element (28) into a high air-pressure state that is higher than the atmospheric pressure.
  • the compressed air flowed into the cylindrical guide element (28) is exhausted from the penetrating hole (25h') provided in the top of the body (25h), thereby bringing the air-pressure state inside the cylindrical guide element (28) back into the atmospheric pressure state.
  • air tapping is carried out by switching the air-pressure state from a high air-pressure state that is higher than the atmospheric pressure to the atmospheric pressure state alternately in this embodiment.
  • the powder (p) that has been injected into the bag (27) as well as the cylindrical guide element (28) is therefore packed into the bag (27).
  • the problem that the powder (p) inside the cylindrical guide element (28) is blown up due to inflow of the atmospheric air from the clearance between the bag-holding container (26) and the cylindrical guide element (28) may therefore be prevented from arising.
  • the present invention allows the bag (27) to be closely attached to the inner wall of the bag-holding container (26) by adopting air tapping in which the air-pressure state is alternately switched from a high air-pressure state that is higher than the atmospheric pressure to the atmospheric pressure state, deformation of the bag (27) does not occur.
  • the present invention allows the material to be packed into the container uniformly.
  • This effect may be achieved also by the following process: the container has been preliminarily loaded with a material by the use of another packing method or the conventional packing method, and covered with a shoe that has the same structure as the feed shoe described above, but is not loaded with the material to be packed (hereinafter this shoe is referred to as the "cover shoe").
  • the cover shoe is subjected to the cycle in which the air pressure state inside the cover shoe is switched from a high air-pressure stated to a low air-pressure state, while keeping the air-pressure higher than or equal to the air-pressure outside the container ( normally, atmospheric pressure).
  • the material is therefore packed uniformly into the container throughout with little scattering of the packing quantity at each time of packing.
  • the air tapping method by the use of the cover shoe is preferably employed in the cases such as the following example:
  • the powder is preliminarily weighed with a high-precision weighing device according to the desired quantity to be filled into a die cavity and fed into the die cavity.
  • the packing density in the die cavity is quite uneven.
  • the cover shoe is mounted on the top opening of the die cavity and subjected to the air tapping process. This process allows the powder to be filled into every corner of the complicatedly shaped die cavity or circumferential wall of the shallow-ring-shaped cavity with a great homogeneity as well as great weight precision.
  • the air tapping method of the present invention does not change the quantity of the powder at all. Therefore, complicatedly shaped or shallow-ring-shaped powder compacts whose weights and shapes are precisely controlled may be produced by the present invention.
  • the air used for air tapping may be an inert gas such as nitrogen gas or argon gas.
  • the air that has been referred to in the embodiments above is not limited to the atmospheric air, but comprises inert gases including nitrogen gas and argon gas.
  • the present invention has the following effects.
  • the apparatus of this invention does not require a means for preventing the container from deforming because the air tapping process is carried out by keeping the air-pressure state higher or equal to the atmospheric pressure state.
  • the structure of the apparatus may therefore be simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Powder Metallurgy (AREA)
  • Buffer Packaging (AREA)
EP00119314A 1999-09-07 2000-09-06 Procédé et dispositif pour compacter du matériau Withdrawn EP1083125A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP25276699A JP4641576B2 (ja) 1999-09-07 1999-09-07 充填方法及びその装置
JP25276699 1999-09-07

Publications (2)

Publication Number Publication Date
EP1083125A2 true EP1083125A2 (fr) 2001-03-14
EP1083125A3 EP1083125A3 (fr) 2004-03-17

Family

ID=17242010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00119314A Withdrawn EP1083125A3 (fr) 1999-09-07 2000-09-06 Procédé et dispositif pour compacter du matériau

Country Status (5)

Country Link
EP (1) EP1083125A3 (fr)
JP (1) JP4641576B2 (fr)
KR (2) KR20010077864A (fr)
CN (1) CN1168631C (fr)
TW (1) TW474877B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7927091B2 (en) 2003-11-28 2011-04-19 Commissariat A L'energie Atomique Device for filling a mould with a powder or a mixture of powders

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102862714B (zh) * 2012-09-26 2015-01-07 全越 自助型全自动纸管充填方法及其充填机构
CN104191497B (zh) * 2014-09-11 2016-09-14 长兴威力窑业有限公司 一种自动成型真空排气装置
CN104495411A (zh) * 2014-11-13 2015-04-08 孔庆虹 一种气压加料装置
JP6884764B2 (ja) * 2015-09-11 2021-06-09 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 熱源の製造方法
CN107088656B (zh) * 2016-02-18 2019-06-28 大同特殊钢株式会社 粉末填充装置、烧结磁体制造设备和烧结磁体制造方法
CN110871271B (zh) * 2018-08-29 2022-02-25 大同特殊钢株式会社 粉末填充装置、烧结磁体制造装置以及烧结磁体制造方法
CN111681515B (zh) * 2020-07-02 2022-04-08 德州学院 一种口腔专业教具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016538B (de) * 1956-02-18 1957-09-26 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Einfuellen metallischer Feinstpulver in Formen zum Pressen sinterbarer Formkoerper
FR2094352A5 (en) * 1970-06-18 1972-02-04 Commissariat Energie Atomique Powder-compacting appts - dispensing powder from shoe to matrix
US5727607A (en) * 1995-01-26 1998-03-17 Ricoh Company, Ltd. Powder feeding method and apparatus for feeding powders with a fluid with increased precision
US5897826A (en) * 1996-06-14 1999-04-27 Materials Innovation, Inc. Pulsed pressurized powder feed system and method for uniform particulate material delivery
EP0988959A2 (fr) * 1998-09-24 2000-03-29 Intermetallics Co., Ltd. Procédé de compactage de poudre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819522B2 (ja) * 1978-06-19 1983-04-19 水澤化学工業株式会社 粉体を濃密にするための処理方法
JPH01222277A (ja) * 1988-03-01 1989-09-05 Minolta Camera Co Ltd トナー充填方法
JP3710184B2 (ja) * 1995-12-15 2005-10-26 インターメタリックス株式会社 被充填物の充填方法
JPH09104401A (ja) * 1995-10-12 1997-04-22 Minolta Co Ltd 粉体充填方法
JPH10180492A (ja) * 1996-12-26 1998-07-07 Kobe Steel Ltd 粉末充填方法及び粉末充填装置
JP3978262B2 (ja) * 1997-08-07 2007-09-19 インターメタリックス株式会社 充填方法及びその装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016538B (de) * 1956-02-18 1957-09-26 Deutsche Edelstahlwerke Ag Verfahren und Vorrichtung zum Einfuellen metallischer Feinstpulver in Formen zum Pressen sinterbarer Formkoerper
FR2094352A5 (en) * 1970-06-18 1972-02-04 Commissariat Energie Atomique Powder-compacting appts - dispensing powder from shoe to matrix
US5727607A (en) * 1995-01-26 1998-03-17 Ricoh Company, Ltd. Powder feeding method and apparatus for feeding powders with a fluid with increased precision
US5897826A (en) * 1996-06-14 1999-04-27 Materials Innovation, Inc. Pulsed pressurized powder feed system and method for uniform particulate material delivery
EP0988959A2 (fr) * 1998-09-24 2000-03-29 Intermetallics Co., Ltd. Procédé de compactage de poudre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7927091B2 (en) 2003-11-28 2011-04-19 Commissariat A L'energie Atomique Device for filling a mould with a powder or a mixture of powders

Also Published As

Publication number Publication date
JP4641576B2 (ja) 2011-03-02
KR20070048160A (ko) 2007-05-08
TW474877B (en) 2002-02-01
CN1168631C (zh) 2004-09-29
JP2001072001A (ja) 2001-03-21
EP1083125A3 (fr) 2004-03-17
CN1287083A (zh) 2001-03-14
KR20010077864A (ko) 2001-08-20

Similar Documents

Publication Publication Date Title
KR20070048160A (ko) 재료를 충전하기 위한 충전방법 및 충전장치
US5897826A (en) Pulsed pressurized powder feed system and method for uniform particulate material delivery
US6155028A (en) Method and apparatus for packing material
CN104981404B (zh) 粉末填充装置及烧结磁铁制造装置
EP0761423B1 (fr) Procédé de compactage de poudre
JPH07164193A (ja) 粉末成形体の製造方法および給粉装置
US3730666A (en) Threaded closure high production isostatic molding device
JPH1149101A (ja) 充填方法及びその装置
US6475430B1 (en) Method and apparatus for packing material including air tapping
JPH0543904A (ja) 永久磁石圧粉体の製造方法
JPH08257798A (ja) 粉体加圧充填装置および方法
JP3884140B2 (ja) 粉末圧縮成形装置
JP3252899B2 (ja) 圧粉体成形方法及びその成形装置
JP2000197996A (ja) 成形方法及び成形装置
CN112863851B (zh) 一种全自动无压力磁粉成型机的拍粉摔落装置
JPS59139633A (ja) 電子部品の樹脂封止方法
CN217969985U (zh) 一种振动振实漏斗装粉装置
JPH01188603A (ja) 粉末成形における粉末充填方法
JP3465819B2 (ja) 鋳造用鋳型における、粒状充填物充填方法ならびに充填装置
JPH10180492A (ja) 粉末充填方法及び粉末充填装置
CN111344246A (zh) 用于制造电梯的对重的方法、用于构造电梯设备的方法、用于电梯的对重以及具有对重的电梯设备
JPH10216991A (ja) 粉末成形方法および装置
JPH10181725A (ja) 嵩高材料の梱包方法及び装置
JPH06262396A (ja) 粉体成形装置
JPH05185458A (ja) トランスファモールド装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7B 30B 11/00 B

Ipc: 7B 30B 15/30 B

Ipc: 7B 65B 1/26 A

17P Request for examination filed

Effective date: 20040917

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050401