JPH0522399Y2 - - Google Patents
Info
- Publication number
- JPH0522399Y2 JPH0522399Y2 JP1989074989U JP7498989U JPH0522399Y2 JP H0522399 Y2 JPH0522399 Y2 JP H0522399Y2 JP 1989074989 U JP1989074989 U JP 1989074989U JP 7498989 U JP7498989 U JP 7498989U JP H0522399 Y2 JPH0522399 Y2 JP H0522399Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating rolls
- air
- screw
- fine powder
- cylinder
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 57
- 238000007872 degassing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 16
- 238000000748 compression moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- 235000001892 vitamin D2 Nutrition 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、ロール圧縮機に関し、特に、微粉か
らなる材料を圧縮成形するためのロール圧縮機に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll compressor, and particularly to a roll compressor for compression molding a material made of fine powder.
従来、一組の回転ロールを用いて微粉からなる
材料を供給し、ブリケツトやフレークに圧縮成形
するロール圧縮機としては、回転ロールの間に押
込みスクリユーを設け、押込みスクリユーの外側
にフイルタ筒を取付け、真空ポンプと接続するこ
とにより、材料中の多量の空気を脱気して成形品
の強度を向上させるようにしたものが知られてい
る（特開昭64−44300号公報）。
Conventionally, a roll compactor that feeds a material consisting of fine powder using a set of rotating rolls and compression molds it into briquettes or flakes has a push-in screw between the rotating rolls and a filter tube attached to the outside of the push-in screw. , a method is known in which the strength of the molded product is improved by removing a large amount of air from the material by connecting it to a vacuum pump (Japanese Patent Application Laid-open No. 44300/1983).
この形式のロール圧縮機では、微粉からなる材
料を圧縮成形するさい、微粉は空隙率の高い充填
状態を呈しているので、空気を真空脱気すること
により、空隙率を低減させる処理が行われ、引続
き一組の回転ロールの間で圧縮成形を行うように
されている。 In this type of roll compressor, when material consisting of fine powder is compressed and molded, the fine powder exhibits a packed state with high porosity, so a process is performed to reduce the porosity by vacuum degassing the air. , followed by compression molding between a set of rotating rolls.
ところで、従来のロール圧縮機では、微粉から
なる材料を押込みスクリユーにより回転ロールの
間に押込むさいに、真空ポンプの駆動により、材
料中の多量の空気は通気性を有するフイルタ筒を
通過させて機外に排気されるように真空脱気され
て、材料の空隙率を低減させている。 By the way, in a conventional roll compressor, when a material consisting of fine powder is forced between rotating rolls by a push screw, a large amount of air in the material is passed through a filter cylinder with air permeability by the drive of a vacuum pump. It is vacuum degassed to the outside to reduce the porosity of the material.
ところが、上記従来の構成は、微粉からなる材
料が真空脱気されて空隙率が低減された状態にて
回転ロールの間で圧縮成形される点で有効である
が、真空脱気にさいして粒度の細かい微粉の一部
が空気とともにフイルタ筒を通過してしまい真空
ポンプなどをはじめとする真空系の運転に支承を
与えるなどがあり好ましくない。
However, the conventional configuration described above is effective in that the material consisting of fine powder is compressed between rotating rolls after being vacuum degassed and the porosity is reduced. Part of the fine powder passes through the filter tube along with the air, which is undesirable as it may interfere with the operation of vacuum systems such as vacuum pumps.
本考案は、上述の問題点を解決するためになさ
れたもので、その目的は、微粉からなる材料を押
込みスクリユーにより圧入されるさいに、材料が
加圧されて、材料と大気との圧力差により材料中
の空気を大気中に脱気して空隙率が低減された材
料を即時に回転ロールの間で圧縮成形し、高密度
にして高強度の成形品を成形歩止りを向上させて
生産できるロール圧縮機を提供することにある。 The present invention was made to solve the above-mentioned problems, and its purpose is to pressurize the material when it is forced into the material made of fine powder with a screw, resulting in a pressure difference between the material and the atmosphere. The air in the material is removed to the atmosphere, and the material with reduced porosity is immediately compressed between rotating rolls to produce high-density, high-strength molded products with improved molding yield. Our goal is to provide a roll compactor that can.
〔課題を解決するための手段〕
本考案によれば、材料供給機の垂直回転軸と同
軸にされ一組のの回転ロールの間に材料を圧入す
る短少長さの押込みスクリユーを設け、押込みス
クリユー先端は回転ロール間に形成される縮少部
に対面して配置され、押込みスクリユーの外側に
は材料の加圧により材料中の空気を脱気させ脱気
空気を外表面から大気中に移動、排気させる脱気
筒を備えている。[Means for Solving the Problems] According to the present invention, a short and short pushing screw is provided which is coaxial with the vertical rotating shaft of the material feeder and press-fits the material between a set of rotating rolls. The tip is placed facing the reduced part formed between the rotating rolls, and the push screw has a screw on the outside that pressurizes the material to degas the air in the material and move the degassed air from the outer surface into the atmosphere. It is equipped with a decylinder for exhausting air.
以上の構成により、微粉からなる材料が押込み
スクリユーにより一組の回転ロールの間に圧入さ
れるさいに、材料が加圧されて材料と大気圧の圧
力差により材料中の空気を脱気させ脱気空気を脱
気筒の外表面から大気中に移動、排気させて、空
隙率が低減された材料を回転ロールの間で圧縮成
形しており、真空系機器の使用を回避することが
できる。
With the above configuration, when a material consisting of fine powder is press-fitted between a set of rotating rolls by a pushing screw, the material is pressurized and the air in the material is degassed due to the pressure difference between the material and the atmospheric pressure. The air is moved and exhausted from the outer surface of the vent cylinder to the atmosphere, and the material with reduced porosity is compression molded between rotating rolls, making it possible to avoid the use of vacuum equipment.
以下、本考案の一実施例を図面について説明す
る。第１図において、１，１は１組の回転ロール
をしめし、図示しない駆動装置により矢Ａ方向に
互いに対向して回転され、回転ロール１，１の外
周面には、複数のモールドが配設されるかまた
は、平滑面が形成されている。回転ロール１，
１、は互いに間隙Ｇのもとで位置せられ、回転ロ
ール１，１の回転に伴い、材料は両回転ロール
１，１の外表面間に形成される間隙の縮小にとも
なつて材料の体積を減少させながら最終的に間隙
Ｇから排出されるさいに材料の圧縮成形が行われ
る。
An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 1 and 1 indicate a pair of rotating rolls, which are rotated by a drive device (not shown) to face each other in the direction of arrow A, and a plurality of molds are disposed on the outer peripheral surfaces of the rotating rolls 1 and 1. or a smooth surface is formed. Rotating roll 1,
1 and 1 are positioned under a gap G, and as the rotating rolls 1, 1 rotate, the volume of the material decreases as the gap formed between the outer surfaces of both rotating rolls 1, 1 decreases. Compression molding of the material takes place when it is finally discharged from the gap G while decreasing the .
１２は材料供給機、２は押込みスクリユーをし
めし、押込みスクリユー２は短少長さよりなり回
転ロール１，１の間に垂直方向に設けられ垂直回
転軸３により同軸にされるとともに、駆動装置４
により回転される。押込みスクリユー２の先端
は、回転ロール１，１間に形成される縮少部１４
に対面して配置されている。押込みスクリユー２
の外側には脱気筒５が包囲するように先細りにな
つて設けられ、脱気筒５は通気性および機械的強
度を有する材料、例えば、ステンレス焼結金属な
どを用いて製作されている。 Reference numeral 12 indicates a material feeder, and 2 indicates a push-in screw.
Rotated by The tip of the pushing screw 2 is connected to a reduced portion 14 formed between the rotating rolls 1, 1.
are placed facing each other. Push screw 2
A decoupling cylinder 5 is provided in a tapered manner so as to surround the outside, and the decoupling cylinder 5 is made of a material having air permeability and mechanical strength, such as stainless steel sintered metal.
７は材料供給機１２のホツパーをしめし、枠材
９上に取付けられるとともに、下端部は前記脱気
筒５の上端部に接続され、ホツパー７の頂部には
材料の供給口８が設けられている。前記垂直回転
軸３には押込みスクリユー２の上方に攪拌羽根６
も取付けられてホツパー７内表面に沿つて運動さ
れ、供給口８から供給される微粉からなる材料が
ホツパー７内表面に付着、堆積することを防止
し、均一な分散状態のもとでホツパー７底部から
押込みスクリユー２を移動されるようにしてい
る。 Reference numeral 7 designates a hopper of the material feeder 12, which is mounted on the frame material 9, and whose lower end is connected to the upper end of the desorption cylinder 5, and the top of the hopper 7 is provided with a material supply port 8. . The vertical rotating shaft 3 has a stirring blade 6 above the push-in screw 2.
is also attached and moved along the inner surface of the hopper 7 to prevent the material consisting of fine powder supplied from the supply port 8 from adhering to and accumulating on the inner surface of the hopper 7, and to prevent the material consisting of fine powder supplied from the supply port 8 from adhering to and accumulating on the inner surface of the hopper 7, and to prevent the material consisting of fine powder supplied from the supply port 8 from adhering to and accumulating on the inner surface of the hopper 7. The push screw 2 is moved from the bottom.
第２図において、脱気筒５の内表面には複数の
溝部１０が縦方向に設けられ、材料が押込みスク
リユー２と脱気筒５との間を移動するさいに、前
記溝部１０にも材料が充填されて、押込みスクリ
ユー２間に充満されている材料と接触されて、材
料が押込みスクリユー２間にて空転されてしまう
ことを回避して、押込みスクリユー２面に沿つて
円滑に移動されて、両回転ロール１，１間におい
て噛込まれるようにされている。 In FIG. 2, a plurality of grooves 10 are vertically provided on the inner surface of the decoupling cylinder 5, and when the material moves between the pushing screw 2 and the decoupling cylinder 5, the grooves 10 are also filled with material. The material is moved smoothly along the surface of the push-in screw 2 to prevent the material from coming into contact with the material filled between the push-in screws 2 and being idly rotated between the push-in screws 2. It is designed to be caught between the rotating rolls 1, 1.
なお、必要に応じて、脱気筒５の外表面に開口
を有する保護筒を設けて脱気筒５の耐圧性を強化
させることができる。 Note that, if necessary, a protective cylinder having an opening may be provided on the outer surface of the decapitalization cylinder 5 to strengthen the pressure resistance of the decapitation cylinder 5.
次に作用を説明する。 Next, the action will be explained.
微粉からなる材料は空隙率の高い充填状態のも
とで供給口８からホツパー７内に供給されると攪
拌羽根６の運動により、材料は均一に分散されな
がら降下し、ホツパー７底部から押込みスクリユ
ー２に移動し、脱気筒５との内で充填状態のもと
で、押込みスクリユー２の回転にしたがつて材料
を圧入し、両回転ロール１，１間の縮少部１４に
よつて流れが抑制され、押込みスクリユー２部の
粉体圧力が上昇して材料を加圧するに至り、前記
加圧により脱気筒５にて材料中の空気を脱気させ
脱気空気を脱気筒５の外表面から大気中に移動、
排気させる脱気作用が行われ、すなわち、材料の
加圧と脱気が同時に行われて材料の空隙率が低減
して空気含有の少いカサ密度の増大した材料とな
り、成形性が著しく改善される。このように成形
性が改善された材料が回転ロールの間に圧入され
て圧縮されるので、成形品は緻密な充填構造のも
とで、高密度のものが生産される。 When the material consisting of fine powder is fed into the hopper 7 from the supply port 8 in a packed state with high porosity, the material descends while being uniformly dispersed due to the movement of the stirring blades 6, and is pushed from the bottom of the hopper 7 into the hopper 7. 2, the material is press-fitted into the desorption cylinder 5 in a filled state according to the rotation of the push-in screw 2, and the flow is prevented by the reduced part 14 between the two rotating rolls 1, 1. As a result, the powder pressure in the pushing screw 2 part increases and pressurizes the material, and due to the pressurization, the air in the material is deaerated in the degassed cylinder 5, and the degassed air is released from the outer surface of the degassed cylinder 5. move into the atmosphere,
A degassing action is performed, that is, pressurization and degassing of the material are performed at the same time, reducing the porosity of the material, resulting in a material with less air content and increased bulk density, which significantly improves formability. Ru. Since the material with improved moldability is press-fitted between rotating rolls and compressed, a molded article with a dense filling structure and high density is produced.
以上説明したように、本考案は、押込みスクリ
ユーの外側の脱気筒を用いて、微粉からなる材料
の加圧により材料中の空気を脱気させ脱気空気を
外表面から大気中に移動、排気させてしかも、加
圧と脱気とを同時に行わせて、回転ロールの間で
材料の圧縮成形が行われるので、真空系機器の使
用を回避できて、空隙率の高い微粉からなる材料
を成形しても、高密度、高強度の成形品を高い成
形歩止りのもとで生産でき、また、回転ロールの
上部に材料供給機の垂直回転軸と同軸にされた短
少長さの押込みスクリユーを設けて構造をコンパ
クト化させることができる等、多大な効果を奏せ
られるのである。
As explained above, the present invention uses the de-cylinder outside the push-in screw to degas the air in the material by pressurizing the material made of fine powder, moves the deaerated air from the outer surface into the atmosphere, and exhausts the material. Moreover, since the material is compression-molded between rotating rolls with simultaneous pressurization and deaeration, it is possible to avoid the use of vacuum equipment and mold materials made of fine powder with high porosity. However, high-density, high-strength molded products can be produced with a high molding yield.In addition, a short and short push-in screw coaxial with the vertical rotation axis of the material feeder is installed on the top of the rotating roll. This can bring about great effects, such as making the structure more compact.
第１図は本考案のロール圧縮機の一実施例をし
めす全体構成図、第２図は同要部断面図である。
１，１……回転ロール、２……押込みスクリユ
ー、５……脱気筒、１２……材料供給機、１４…
…縮少部。
FIG. 1 is an overall configuration diagram showing an embodiment of a roll compressor according to the present invention, and FIG. 2 is a sectional view of the main parts thereof. 1, 1...Rotating roll, 2...Pushing screw, 5...Decap cylinder, 12...Material feeder, 14...
...shrinking section.
Claims (1)
転ロールの間に材料を圧入する短少長さの押込み
スクリユーを設け、押込みスクリユー先端は回転
ロール間に形成される縮少部に対面して配置さ
れ、押込みスクリユーの外側には材料の加圧によ
り材料中の空気を脱気させ脱気空気を外表面から
大気中に移動、排気させる脱気筒を備えたことを
特徴とするロール圧縮機。 A short and short pushing screw is provided which is coaxial with the vertical rotation axis of the material feeder and presses the material between a set of rotating rolls, and the tip of the pushing screw faces the reduced part formed between the rotating rolls. A roll compressor characterized in that the roll compressor is equipped with a degassing cylinder arranged on the outside of the pushing screw to degas the air in the material by pressurizing the material, and to move and exhaust the degassed air from the outer surface to the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989074989U JPH0522399Y2 (en) | 1989-06-27 | 1989-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989074989U JPH0522399Y2 (en) | 1989-06-27 | 1989-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0314092U JPH0314092U (en) | 1991-02-13 |
| JPH0522399Y2 true JPH0522399Y2 (en) | 1993-06-08 |
Family
ID=31615172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989074989U Expired - Lifetime JPH0522399Y2 (en) | 1989-06-27 | 1989-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0522399Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5833343B2 (en) * | 2011-05-31 | 2015-12-16 | 三井造船株式会社 | Filtered base block |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780080B2 (en) * | 1987-08-08 | 1995-08-30 | 新東工業株式会社 | Fine powder granulator |
-
1989
- 1989-06-27 JP JP1989074989U patent/JPH0522399Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0314092U (en) | 1991-02-13 |
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