IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0861749
(2007-09-26)
|
등록번호 |
US-7836921
(2011-01-22)
|
우선권정보 |
JP-2006-052216(2006-02-28) |
발명자
/ 주소 |
- Isomura, Tetsuo
- Jimba, Manabu
- Koseki, Masashi
- Jomen, Kei
- Ban, Yutaka
|
출원인 / 주소 |
|
대리인 / 주소 |
Fitzpatrick, Cella, Harper & Scinto
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
32 |
초록
▼
A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned abov
A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
대표청구항
▼
What is claimed is: 1. A powder filling apparatus comprising: a filling container; a pressure hopper, wherein: the pressure hopper includes a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the po
What is claimed is: 1. A powder filling apparatus comprising: a filling container; a pressure hopper, wherein: the pressure hopper includes a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper, and the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer, formed to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to fill the powder into the filling container; and a detecting unit for detecting the filled quantity of powder in the filling container and a control unit which, when the filled quantity detected by the detecting unit has reached a prescribed level, temporarily stops the discharge of powder from the pressure hopper and after the temporary stop causes the filling to be resumed, wherein the detecting unit detects the quantity of powder filled in the filling container by detection of a decrease in the mass of the pressure hopper. 2. A powder filling apparatus comprising: a filling container; and a pressure hopper, wherein: the pressure hopper includes a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer, formed to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to fill the powder into the filling container, and a rear end of the discharger which feeds powder into the filling container has a shape that is substantially the same as the inside shape of a lid of the filling container. 3. The powder filling apparatus according to claim 2, wherein powder is filled into the filling container while the inside of a powder storage part is being deaerated by a deaerator, a lid-shaped filter having a shape that is substantially the same as the inside shape of the lid of the filling container is fitted to the rear end of the discharger which feeds powder into the filling container, and the deaeration is accomplished by the lid-shaped filter. 4. A powder filling apparatus comprising: a filling container; a pressure hopper, wherein: the pressure hopper includes a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed as blockade the discharger in the pressure hopper, and the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer, formed to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to fill the powder into the filling container; and a reservoir for storing the powder is provided between the pressure hopper and the filling container, wherein at least part of a wall face of the reservoir is formed of a reservoir filter which passes air and intercepts powder, and the reservoir has a shutter which seals a reservoir powder outlet through which the powder is discharged into the filling container. 5. The powder filling apparatus according to claim 4, wherein a reservoir deaerator which deaerates the inside of the reservoir via the reservoir filter is connected to the reservoir. 6. The powder filling apparatus according to claim 4, wherein a reservoir air feeder which lets in air into the reservoir via the reservoir filter is connected to the reservoir. 7. The powder filling apparatus according to claim 4, wherein the size of the reservoir powder outlet is smaller than that of a powder filling inlet provided in the filling container. 8. A powder filling method executed by using a powder filling apparatus including: (i) a filling container and (ii) a pressure hopper with a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed as blockade the discharger in the pressure hopper, the method comprising the step of: pressurizing the inside of the pressure hopper by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer, formed to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container, wherein a filter which passes air and intercepts powder is provided in at least part of the area in which the pressure hopper and the powder layer are in contact with each other and, after gas contained in the powder layer within the pressure hopper is removed via the filter, powder is filled into the filling container. 9. A powder filling method executed by using a powder filling apparatus including: (i) a filling container and (ii) a pressure hopper with a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper, the method comprising the step of: pressurizing the inside of the pressure hopper by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer formed, to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container, wherein a rear end of the discharger which feeds powder into the filling container has a shape that is substantially the same as the inside shape of a lid of the filling container, and filling is carried out with the surface of the powder in a powder storage part of the filling container being adjusted to substantially the same shape as the inside shape of the lid. 10. The powder filling method according to claim 9, wherein the filling container is filled with powder while the interior of a powder storage part is being deaerated with a deaerator, a lid-shaped filter having substantially the same shape as the inside shape of the lid of the filling container is fitted to the rear end of the discharger which feeds powder into the filling container, and deaeration is accomplished by the deaerator via the lid-shaped filter. 11. A powder filling method executed by using a powder filling apparatus including (i) a filling container; (ii) a pressure hopper with a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper; and (iii) a reservoir for storing the powder disposed between the pressure hopper and the filling container, at least part of the wall face of the reservoir is formed of a reservoir filter which passes air and intercepts powder, and the reservoir has a shutter which seals the reservoir powder outlet through which the powder is discharged into the filling container; the method comprising the steps of: pressurizing the inside of the pressure hopper by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer, formed to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container; and filling the reservoir with the powder from the pressure hopper in a state in which the reservoir powder outlet is sealed by the shutter and, by releasing the shutter afterwards, the powder is filled from the reservoir into the filling container. 12. The powder filling method according to claim 11, wherein, when powder is to be filled into the reservoir, the interior of the reservoir is deaerated from the reservoir filter by using a reservoir deaerator. 13. The powder filling method according to claim 11, wherein, when powder in the reservoir is to be filled into the filling container, a reservoir air feeder is used to feed gas from the reservoir filter to the inside of the reservoir. 14. The powder filling method according to claim 11, wherein the size of the reservoir powder outlet is smaller than that of a powder filling inlet provided in the filling container. 15. A powder filling method executed by using a powder filling apparatus including: (i) a filling container and (ii) a pressure hopper with a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper, the method comprising the steps of: pressurizing the inside of the pressure hopper by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer formed, to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container, wherein the filling container has a filling container powder inlet for filling powder and a filling container deaerator for removing gas in a powder storing portion, the filling container deaerator being disposed in a higher position than the filling container powder inlet and the filling container deaerator being provided with a filling container deaerating filter which passes air and intercepts powder; and filling of powder into the filling container is carried out while daeration is performed by the filling container deaerator. 16. The powder filling method according to claim 15, wherein the filling container powder inlet is arranged at or near the lower end of a powder storing portion of the filling container in a vertical direction, and the filling container deaerator is arranged at or near an upper end of the powder storing portion in the vertical direction. 17. A powder filling method executed by using a powder filling apparatus including: (i) a filling container and (ii) a pressure hopper with a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper, the powder layer is formed to blockade the discharger in the pressure hopper, the method comprising the steps of: pressurizing the inside of the pressure hopper by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer formed, to blockade the discharger, is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container, wherein the filling container includes a powder storing portion for storing powder and a filling container deaerator, further including a filling assisting tube extending downward from the upper part of the powder storing portion in the vertical direction when the filling container is in the filling posture, and the filling container deaerator is arranged above the powder storing portion in the vertical direction, and the rear end of the discharger which feeds powder into the filling container is connected to the upper end of the filling assisting tube; and filling powder into the powder storing portion through the filling assisting tube while gas in the powder storing portion is being removed from the filling container deaerator. 18. The powder filling method according to claim 17, wherein a connecting part between the upper end of a filling assisting tube and the rear end of the discharger which feeds powder into the filling container is provided with a tight seal for sealing the connecting part on at least one of the pressure hopper and the filling container. 19. The powder filling method according to claim 17, wherein the filling container deaerator is provided with a deaerator.
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