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US-2017224006-A1 · Aug 10, 2017 · US
Screw feeder and fiber structure manufacturing apparatus
US11891722B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11891722-B2 |
| Application number | US-202117315392-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 10, 2021 |
| Priority date | May 12, 2020 |
| Publication date | Feb 6, 2024 |
| Grant date | Feb 6, 2024 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A screw feeder includes: a case that includes a material putting-in portion through which a fluff material is put in and a material putting-out portion through which the fluff material is put out below the material putting-in portion; and a screw that includes a rotational shaft and a blade portion, the rotational shaft being provided rotatably inside the case, the blade portion being spirally mounted on the rotational shaft; wherein the screw is rotated with repeated alternation of a slope-down direction in which the blade portion slopes downward spirally in a vertical direction and a slope-up direction in which the blade portion slopes upward spirally in the vertical direction.
First claim
Opening claim text (preview).
What is claimed is: 1. A fiber structure manufacturing apparatus, comprising: a dry defibrator that pulverizes and defibrates a raw material that contains fibers; a transportation unit that transports a defibrated material after defibration by the dry defibrator; a material supply unit that supplies a material to the transportation unit; a fiber structure forming unit that forms a fiber structure from the defibrated material transported by the transportation unit, wherein the material supply unit includes a case that includes a material putting-in portion through which a fluff material is put in and a material putting-out portion through which the fluff material is put out below the material putting-in portion; and a screw that includes a rotational shaft and a blade portion, the rotational shaft being provided rotatably inside the case, the blade portion being spirally mounted on the rotational shaft; wherein the screw is rotated with repeated alternation of a slope-down direction in which the blade portion slopes downward spirally in a vertical direction and a slope-up direction in which the blade portion slopes upward spirally in the vertical direction. 2. The fiber structure manufacturing apparatus according to claim 1 , wherein a length of time of rotating the screw in the slope-up direction is greater than a length of time of rotating the screw in the slope-down direction. 3. The fiber structure manufacturing apparatus according to claim 1 , wherein the material supply unit further includes a jet ejector that projects a jet of gas to an inside of the case. 4. The fiber structure manufacturing apparatus according to claim 1 , wherein the material supply unit further includes a stirring member that stirs an inside of the case. 5. The fiber structure manufacturing apparatus according to claim 1 , wherein a diameter of the blade portion becomes larger toward a top.
Assignees
Inventors
Classifications
- D01B9/00Primary
Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments · CPC title
with paddles or arms · CPC title
- B65G33/08Primary
for fluent solid materials · CPC title
Stirrers with additional elements mounted on the stirrer, for purposes other than mixing · CPC title
Natural animal fibres, e.g. keratin fibres · CPC title
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- What does patent US11891722B2 cover?
- A screw feeder includes: a case that includes a material putting-in portion through which a fluff material is put in and a material putting-out portion through which the fluff material is put out below the material putting-in portion; and a screw that includes a rotational shaft and a blade portion, the rotational shaft being provided rotatably inside the case, the blade portion being spirally …
- Who is the assignee on this patent?
- Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification D01B9/00. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Feb 06 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).