JPS6039218Y2 - Pressure regulating extrusion molding machine - Google Patents
Pressure regulating extrusion molding machineInfo
- Publication number
- JPS6039218Y2 JPS6039218Y2 JP17587582U JP17587582U JPS6039218Y2 JP S6039218 Y2 JPS6039218 Y2 JP S6039218Y2 JP 17587582 U JP17587582 U JP 17587582U JP 17587582 U JP17587582 U JP 17587582U JP S6039218 Y2 JPS6039218 Y2 JP S6039218Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- molding machine
- extrusion molding
- sleeve
- extrusion
- 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
Links
Landscapes
- Accessories For Mixers (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
【考案の詳細な説明】
本考案は窯業原料の押出成型機、真空土練機等において
押出シリンダーの内径より大径なる成型体を均質なる状
態にて押出せしめる様にした調圧式押出成型機に関する
ものである。[Detailed description of the invention] The present invention relates to a pressure-regulated extrusion molding machine that extrudes a molded product having a diameter larger than the inner diameter of an extrusion cylinder in a homogeneous state in an extrusion molding machine for ceramic raw materials, a vacuum clay kneading machine, etc. It is something.
一般に押出成型機にて原料を押出せしめるには押出シリ
ンダーの先端に押出シリンダーより小型なるノズルを取
付けて圧縮状態にて押出成型を行わしめるのが普通であ
るが、必要により押出シリンダーより大径なる成型体を
押出成型せしめる場合、従来は第１図に図示する様に押
出シリンダーａとノズルｂとの中間にノズルｂより大径
なる拡大シリンダー〇を装着せしめ、押出シリンダーａ
より押出される原料を拡大シリンダーＣ内にて一旦ノズ
ルｂの径より拡大せしめた後ノズルｂにて圧縮せしめる
様に威している。Generally, in order to extrude raw materials with an extrusion molding machine, a nozzle smaller than the extrusion cylinder is attached to the tip of the extrusion cylinder and extrusion molding is performed in a compressed state, but if necessary, a nozzle with a diameter larger than the extrusion cylinder is installed. When extrusion molding a molded product, conventionally, as shown in FIG.
The extruded raw material is once expanded in the expansion cylinder C to be larger than the diameter of the nozzle b, and then compressed in the nozzle b.
然しなからかかる方式では外周部と中心部に密度の差、
バラツキが生じ、特に中心部では圧縮圧が作用し難いた
め締まりが悪く後工程において歪、切れ等の不良品発生
の原因となり、歩留りの低下を来たしていた。However, in this method, there is a difference in density between the outer periphery and the center,
Variations occur, and compression pressure is difficult to act on, especially in the center, resulting in poor tightness, which causes defects such as distortion and cuts in subsequent processes, leading to a decrease in yield.
本考案はかかる欠点に鑑み、押出成型機の押出シリンダ
ーに該押出シリンダーより大径なるノズルを先端部に有
し且つ中間部にノズルより大径なる拡大シリンダーを有
する拡径装置を連設せしめ、拡大シリンダーの内周には
スリーブを周設せしめると共に該スリーブの外周に拡大
シリンターの中心へ向って進退自在ならしめた押圧部材
を配設せしめ、該押圧部材に所定の圧力を作用せしめて
スリーブを押圧せしめる様にし、拡大シリンダーを通過
する原料に対しスリーブの縮径により一定の押圧を作用
せしめて密度の均質化を図らしめる様にして上記欠点を
解消せんとしたものにして、以下本考案の一実施例を図
面に基づいて説明すると、
１は押出成型機であり、押出シリンダー２に内装せしめ
たスクリュー３の旋回作動によに原料Ｍを順次押出せし
めるものである。In view of these drawbacks, the present invention provides an extrusion cylinder of an extrusion molding machine with a diameter expanding device that has a nozzle at its tip that is larger in diameter than the extrusion cylinder, and an expansion cylinder that is larger in diameter than the nozzle in the middle part, A sleeve is provided around the inner periphery of the expanding cylinder, and a pressing member that can move forward and backward toward the center of the expanding cylinder is placed on the outer periphery of the sleeve, and a predetermined pressure is applied to the pressing member to close the sleeve. In order to solve the above-mentioned drawbacks, the material passing through the expanding cylinder is subjected to a constant pressure by reducing the diameter of the sleeve, thereby making the density homogeneous. One embodiment will be described based on the drawings. Reference numeral 1 denotes an extrusion molding machine, which sequentially extrudes a raw material M by the rotating operation of a screw 3 housed in an extrusion cylinder 2.
４は押出シリンダー２の前部に連設せしめた拡径装置で
あり、該拡径装置４は先端部に位置すると共に押出シリ
ンダー２の内径Ｄ１より大径なる内径Ｄ２を有するノズ
ル５と、中間部に位置すると共にノズル５の内径Ｄ２よ
り大径なる内径Ｄ３を有する拡大シリンダー６と、後端
部に位置し押出シリンダー２と拡大シリンダー６を連結
せしめる連結部材７より威り、ノズル５、拡大シリンダ
ー６、連結部材７をテーパ一部８，９にて移行せしめる
と共に各部を夫々ボルト１０，１０’・・・にて連結せ
しめている。Reference numeral 4 denotes a diameter expanding device connected to the front part of the extrusion cylinder 2, and the diameter expanding device 4 is located at the tip and has a nozzle 5 having an inner diameter D2 larger than the inner diameter D1 of the extrusion cylinder 2, and a nozzle 5 in the middle. The nozzle 5 is expanded by an enlarged cylinder 6 located at the rear end and having an inner diameter D3 larger than the inner diameter D2 of the nozzle 5, and a connecting member 7 located at the rear end and connecting the extrusion cylinder 2 and the enlarged cylinder 6. The cylinder 6 and the connecting member 7 are moved by tapered portions 8 and 9, and each portion is connected by bolts 10, 10', . . . , respectively.
１１は調圧機構部であり、拡大シリンダー６の内周に両
端をノズル５と拡大シリンダー６との間及び拡大シリン
ダー６と連結部材７との間に挟着支持せしめたゴム製の
スリーブ１２を周設せしめ、拡大シリンダー６の壁部１
３を外方に膨出せしめてスリーブ１２との間に隔室１４
を設け、該隔室１４内にはスリーブ１２の外周円弧面に
対応する押圧部材１５，１５’・・・を相互に僅かな間
隙を隔てて等角度毎に配設せしめている。Reference numeral 11 denotes a pressure regulating mechanism section, which includes a rubber sleeve 12 whose both ends are sandwiched and supported between the nozzle 5 and the enlarged cylinder 6 and between the enlarged cylinder 6 and the connecting member 7. Wall portion 1 of circumferential and expanding cylinder 6
3 is bulged outward to form a compartment 14 between the sleeve 12 and the sleeve 12.
In the compartment 14, pressing members 15, 15', .
又壁部１３における各押圧部材１５．１５’・・・の対
同部位にはシリンダー１６．１６’・・・を拡大シリン
ダー６の中心方向へ向けて形成せしめ、このシリンダー
１６．１６’・・・内にピストンロッド１７，１７′・
・・を進退自在に装着せしめると共に該ピストンロッド
１７，１７’・・・の下端部を押圧部材１５．１５’・
・・に夫々連結一体化せしめ、又各シリンダー１６．１
６’・・・を被冠するシリンダーカバー１８．１８’・
・・にシリンダー１６．１６’・・・内に連通する継手
１９，１９’・・・を装着せしめると共各継手１９．１
９’・・・をホース２０．２０’・・・にて連結せしめ
、該ホース２０，２０’・・・には圧力装置２１を連繋
せしめて油圧により各ピストンロッド１７，１７’・・
・、押圧部材１５．１５’・・・を介してスリーブ１２
を変位せしめて拡大シリンダー６内を通過する原料Ｍに
対し押圧作用せしめる様に威している。Also, cylinders 16, 16' are formed at the same positions of the respective pressing members 15, 15' in the wall portion 13, facing toward the center of the enlarged cylinder 6, and the cylinders 16, 16', .・Piston rod 17, 17' inside
... is attached so as to be freely forward and backward, and the lower ends of the piston rods 17, 17' are pressed by pressing members 15, 15',...
. . and each cylinder 16.1
Cylinder cover 18.18' that covers 6'...
When fitting the joints 19, 19'... which communicate with the cylinder 16.16'..., each joint 19.1
9'... are connected by hoses 20, 20'..., and a pressure device 21 is connected to the hoses 20, 20'... to apply hydraulic pressure to each piston rod 17, 17'...
・Sleeve 12 via pressing members 15, 15'...
is displaced to exert pressure on the raw material M passing through the expansion cylinder 6.
図中２２はオイルタンク、２３は油圧ポンプ、２４はモ
ーター、２５はリリーフバルブ、２６は圧力計、２７は
プレッシャースイッチ、２８はオイルの供給管である。In the figure, 22 is an oil tank, 23 is a hydraulic pump, 24 is a motor, 25 is a relief valve, 26 is a pressure gauge, 27 is a pressure switch, and 28 is an oil supply pipe.
尚押圧部材１５，１５’・・・の進退制御は上記の油圧
に限るものではなくエアー又は外部からのクランク、カ
ム等の機械的手段によらしめても良い。The forward and backward movement control of the pressing members 15, 15', etc. is not limited to the above-mentioned hydraulic pressure, but may be performed using air or external mechanical means such as a crank or cam.
次に本考案に係る調圧式押出成型機の作用について説明
すると、調圧機構部１１のシリンダー１６．１６’・・
・に圧力装置２１により所定の圧力を作用せしめた状態
にて押出成型機１を作動せしめると原料Ｍは順次拡大シ
リンダー６内に至り、該拡大シリンダー６を通過する際
密度の低い原料Ｍが圧送されて来るとスリーブ１２はピ
ストンロッド１７，１７’・・・、押圧部材１５，１５
’・・・を介して一定の圧力で押圧されているため原料
Ｍの密度のバラツキに応じてスリーブ１２が縮径変位し
て通過中の原料Ｍを圧縮するため、拡大シリンダー６を
通過した原料Ｍの密度は均一化され、続いてノズル５か
ら押出シリンダー２より大径なる成型体Ｗが順次均質な
状態にて押出されるのである。Next, to explain the operation of the pressure regulating extrusion molding machine according to the present invention, the cylinders 16, 16' of the pressure regulating mechanism section 11...
When the extrusion molding machine 1 is operated with a predetermined pressure applied by the pressure device 21 to When the sleeve 12 is moved, the piston rods 17, 17'..., the pressing members 15, 15
Since the sleeve 12 is pressed with a constant pressure through the cylinder 6, the diameter of the sleeve 12 is reduced depending on the variation in the density of the raw material M, and compresses the raw material M passing through. The density of M is made uniform, and then molded bodies W having a diameter larger than that of the extrusion cylinder 2 are successively extruded from the nozzle 5 in a homogeneous state.
要するに本考案は、押出成型機１の押出シリンダー２に
該押出シリンダー２より大径なるノズル５を先端部に有
し且つ中間部にノズル５より大径なる拡大シリンダー６
を有する拡径装置４を連設せしめ、拡大シリンダー６の
内周にはスリーブ１２を周設せしめると共に該スリーブ
１２の外周に拡大シリンダー６の中心へ向って進退自在
ならしめた押圧部材１５，１５’・・・を配設せしめ、
該押圧部材１５．１５’・・・に所定の圧力を作用せし
めてスリーブ１２を押圧せしめる様にしたので、押出シ
リンダー２から拡径装置４内に押出された原料Ｍは拡大
シリンダー６を通過する過程においてスリーブ１２によ
る一定の圧縮力を受けるため密度のバラツキが均一化さ
れると共に原料Ｍにおける外周部と中心部との間の密度
差もスリーブ１２の中心方向への圧縮圧により矯正され
、よって押出シリンダー２の内径Ｄ１より大径なる成型
体Ｗを常に均質な状態で押出せしめることが出来、後工
程での歪、切れ等の不良品の発生を防止せしめて歩留り
の向上を図らしめることが出来る等その実用的効果甚だ
大なるものである。In short, the present invention has an extrusion cylinder 2 of an extrusion molding machine 1 with a nozzle 5 having a larger diameter than the extrusion cylinder 2 at the tip and an enlarged cylinder 6 having a larger diameter than the nozzle 5 in the middle part.
A sleeve 12 is provided around the inner periphery of the enlarged cylinder 6, and pressing members 15, 15 are provided on the outer periphery of the sleeve 12 so as to be able to move forward and backward toward the center of the enlarged cylinder 6. ',
Since a predetermined pressure is applied to the pressing members 15, 15'... to press the sleeve 12, the raw material M extruded from the extrusion cylinder 2 into the diameter expansion device 4 passes through the expansion cylinder 6. In the process, the sleeve 12 receives a constant compressive force, so variations in density are made uniform, and the difference in density between the outer periphery and the center of the raw material M is also corrected by the compressive pressure toward the center of the sleeve 12. It is possible to extrude a molded body W having a diameter larger than the inner diameter D1 of the extrusion cylinder 2 in a homogeneous state at all times, and it is possible to prevent the occurrence of defective products such as distortion and cuts in the subsequent process, and to improve the yield. Its practical effects are enormous.
図は本考案の一実施例を示すものにして、第１図は従来
例を示す図、第２図は本考案に係る調圧式押出成型機の
断面図、第３図は第２図のＡ−Ａ断面図である。
１・・・・・・押出成型機、２・・・・・・押出シリン
ダー、４・・・・・・拡径装置、５・・・・・・ノズル
、６・・・・・・拡大シリンダー １２・・・・・・ス
リーブ、１５．１５’・・・・・・押圧部材。The figures show an embodiment of the present invention, Fig. 1 shows a conventional example, Fig. 2 is a sectional view of a pressure regulating extrusion molding machine according to the invention, and Fig. 3 is A of Fig. 2. -A sectional view. 1...Extrusion molding machine, 2...Extrusion cylinder, 4...Diameter expansion device, 5...Nozzle, 6...Expansion cylinder 12... Sleeve, 15.15'... Pressing member.
Claims (1)
径なるノズルを先端部に有し且つ中間部にノズルより大
径なる拡大シリンダーを有する拡径装置を連設せしめ、
拡大シリンダーの内周にはスリーブを周設せしめると共
に該スリーブの外周に拡大シリンダーの中心へ向って進
退自在ならしめた押圧部材を配設せしめ、該押圧部材に
所定の圧力を作用せしめてスリーブを押圧せしめる様に
したことを特徴とする調圧式押出成型機。A diameter expanding device is connected to an extrusion cylinder of an extrusion molding machine, the extrusion molding machine having a nozzle having a diameter larger than the extrusion cylinder at the tip and an expanding cylinder having a diameter larger than the nozzle at the middle part,
A sleeve is provided around the inner periphery of the expanding cylinder, and a pressing member that can move forward and backward toward the center of the expanding cylinder is provided on the outer periphery of the sleeve, and a predetermined pressure is applied to the pressing member to close the sleeve. A pressure-adjustable extrusion molding machine that is characterized by a pressure-controlled extrusion molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17587582U JPS6039218Y2 (en) | 1982-11-20 | 1982-11-20 | Pressure regulating extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17587582U JPS6039218Y2 (en) | 1982-11-20 | 1982-11-20 | Pressure regulating extrusion molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5979308U JPS5979308U (en) | 1984-05-29 |
| JPS6039218Y2 true JPS6039218Y2 (en) | 1985-11-25 |
Family
ID=30382517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17587582U Expired JPS6039218Y2 (en) | 1982-11-20 | 1982-11-20 | Pressure regulating extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039218Y2 (en) |
-
1982
- 1982-11-20 JP JP17587582U patent/JPS6039218Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5979308U (en) | 1984-05-29 |
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