JPS602910Y2 - Screw support device in extrusion molding machine - Google Patents
Screw support device in extrusion molding machineInfo
- Publication number
- JPS602910Y2 JPS602910Y2 JP1979081997U JP8199779U JPS602910Y2 JP S602910 Y2 JPS602910 Y2 JP S602910Y2 JP 1979081997 U JP1979081997 U JP 1979081997U JP 8199779 U JP8199779 U JP 8199779U JP S602910 Y2 JPS602910 Y2 JP S602910Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- screw
- bearing
- screw shaft
- heating 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
- B29C48/2522—Shaft or screw supports, e.g. bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は、スクリュー軸を、加熱シリンダの前部におけ
る軸受台への取付位置で分断し、スクリュー軸の前端よ
り突設する螺軸を、前部軸受台に枢支した伝動軸内に、
キー結合して支持された駆動軸の後端における螺孔へ、
螺締して結合することによって、スクリュー軸の本体部
分の長さをできるだけ短かくして、その製作を容易とし
、かつホッパーに連なる樹脂供給孔を備える後部軸受台
における軸受孔の前記樹脂供給孔の直後に、該スリーブ
を、回動可能に装着るとともに、該スリーブに、スクリ
ュー軸の後端軸部を嵌着し、スクリュー軸をスリーブと
が一体的に回転するようにすることにより、スリーブ軸
の摩耗をなくシ、また、加熱シリンダの前端を前部軸受
台から取外して、スクリュー軸の前端と駆動軸との結合
を解くことにより、スクリュー軸を加熱シリンダ又は後
部軸受台のスリーブから、簡単に抜取って、交換するこ
とができるようにした押出成型機におけるスクリューの
支持装置に関するもので、以下、実施例図に基いて説明
する。[Detailed description of the invention] The present invention splits the screw shaft at the location where it is attached to the bearing pedestal at the front of the heating cylinder, and pivots the screw shaft protruding from the front end of the screw shaft to the front bearing pedestal. In the transmission shaft,
To the screw hole at the rear end of the drive shaft supported by keying,
By screwing and connecting, the length of the main body part of the screw shaft can be made as short as possible to facilitate its manufacture, and the bearing hole in the rear bearing stand is provided with a resin supply hole connected to the hopper, immediately after the resin supply hole. The sleeve is rotatably mounted, and the rear end shaft of the screw shaft is fitted into the sleeve, so that the screw shaft and the sleeve rotate together, so that the sleeve shaft can be rotated. In addition, by removing the front end of the heating cylinder from the front bearing pedestal and uncoupling the front end of the screw shaft from the drive shaft, the screw shaft can be easily removed from the heating cylinder or the sleeve of the rear bearing pedestal. This invention relates to a support device for a screw in an extrusion molding machine that can be removed and replaced, and will be described below with reference to embodiment drawings.
前部軸受台１に、前端にプーリー２を有する伝動軸３を
、ラジアル軸受４とスラスト軸受５を介して、回動可能
なように支持し、かつ該伝動軸３の中心における軸受孔
６に、後端中心部に軸線方向の螺孔７を有する駆動軸８
を嵌合して支持し、伝動軸３と駆動軸８とを、キー９を
介して結合しである。A transmission shaft 3 having a pulley 2 at the front end is rotatably supported on the front bearing stand 1 via a radial bearing 4 and a thrust bearing 5, and a bearing hole 6 at the center of the transmission shaft 3 is supported. , a drive shaft 8 having an axial screw hole 7 at the center of the rear end;
The transmission shaft 3 and the drive shaft 8 are connected via a key 9.
前部軸受台１の後端には、前側部に吐出口１０を有する
加熱シリンダ１１の前端における外向フランジ１２を、
その軸線と前記駆動軸８の軸線とを一致させて、ボルト
１３をもって固着しである。At the rear end of the front bearing stand 1, an outward flange 12 at the front end of a heating cylinder 11 having a discharge port 10 on the front side is provided.
The axis of the drive shaft 8 is aligned with the axis of the drive shaft 8, and the bolts 13 are used to secure the shaft.
加熱シリンダ１１には、それよりも長く、かつ前記外周
に細かい逆ねじ１４を有するスクリュー軸１５を貫挿し
、スクリュー軸１５の前端中心部より前向突設した螺軸
１６を、駆動軸８の後端における螺孔７に螺締しである
。A screw shaft 15 that is longer than the heating cylinder 11 and has a fine reverse thread 14 on the outer periphery is inserted through the heating cylinder 11, and a screw shaft 16 that projects forward from the center of the front end of the screw shaft 15 is attached to the drive shaft 8. It is screwed into the screw hole 7 at the rear end.
後部軸受台２３の前部上側にはホッパー１７が設けられ
、ホッパー１７の下端は、樹脂供給孔１８を介して、軸
受台２３における軸受孔１９の前部上側と連通されてい
る。A hopper 17 is provided on the upper front side of the rear bearing stand 23 , and the lower end of the hopper 17 communicates with the upper front side of the bearing hole 19 in the bearing stand 23 via the resin supply hole 18 .
樹脂供給孔１８の直後において、軸受孔１９に、スリー
ブ２１を嵌合するとともに、このスリーブ２１を、軸受
２２をもって回動可能に支持しである。Immediately after the resin supply hole 18, a sleeve 21 is fitted into the bearing hole 19, and this sleeve 21 is rotatably supported by a bearing 22.
このスリーブ２１の前端外周にには、必要に応じて、米
国特許第３９２４８４１号明細書に開示され、公知とな
っているように、スクリュー軸１５と同方向の細かいね
じ２０を螺刻しておくのがよい。On the outer periphery of the front end of this sleeve 21, if necessary, a fine screw 20 is threaded in the same direction as the screw shaft 15, as disclosed in US Pat. No. 3,924,841 and is well known. It is better.
スリーブ２１内には、スクリュー軸１５の後端における
それと同径の軸部２４を、スリーブ２１と共に回転しう
るように嵌入しである。A shaft portion 24 at the rear end of the screw shaft 15 having the same diameter as that of the screw shaft 15 is fitted into the sleeve 21 so as to be rotatable together with the sleeve 21 .
加熱シリンダ１１の後端の外向フランジ２５を、後部軸
受台２３の前面に、ボルト２６をもって固定しである。The outward flange 25 at the rear end of the heating cylinder 11 is fixed to the front surface of the rear bearing stand 23 with bolts 26.
加熱シリンダ１１を加熱するとともに、ホッパー１７に
原料樹脂を投入し、プーリー２を介して伝動軸３を正転
させると、伝動軸３の中心の軸受孔６には、それとキー
９結合された駆動軸８が嵌合支持され、かつ駆動軸８の
後端中心の螺孔７には、スクリュー軸１５と一体をなす
螺軸１６が螺締されているから、スクリュー軸１５もと
もに正転する。When the heating cylinder 11 is heated and the raw resin is charged into the hopper 17 and the transmission shaft 3 is rotated in the normal direction via the pulley 2, the drive shaft connected to the key 9 is inserted into the bearing hole 6 at the center of the transmission shaft 3. Since the shaft 8 is fitted and supported, and a screw shaft 16 integral with the screw shaft 15 is screwed into the screw hole 7 at the center of the rear end of the drive shaft 8, the screw shaft 15 also rotates normally.
スクリュー軸１５の後端軸部２４の回転に伴い、スリー
ブ２１も共に正転するから、ホッパー１７内の原料樹脂
は、樹脂供給孔１８及び、軸受孔１９の前部を経て、加
熱シリンダ１１の後部に入り、スクリュー軸１５によっ
て、加熱シリンダ１１内を前方へ移送される。As the rear end shaft portion 24 of the screw shaft 15 rotates, the sleeve 21 also rotates in the normal direction, so that the raw resin in the hopper 17 passes through the resin supply hole 18 and the front part of the bearing hole 19 to the heating cylinder 11. It enters the rear part and is transported forward inside the heating cylinder 11 by the screw shaft 15.
この間に樹脂は、加熱シリンダ１１内で十分に溶融混練
されて、加熱シリンダ１１の前側部の吐出口１０より吐
出され、吐出口１０の先方に設けられたダイにより、所
望の製品に成形される。During this time, the resin is sufficiently melted and kneaded in the heating cylinder 11, discharged from the discharge port 10 on the front side of the heating cylinder 11, and molded into a desired product by a die provided ahead of the discharge port 10. .
しかして、上記のスクリュー軸１５の回転中には、スク
リュー軸１５の後端軸部２４は、スリーブ２１と共に回
転するから、摩耗することはない。During the rotation of the screw shaft 15, the rear end shaft portion 24 of the screw shaft 15 rotates together with the sleeve 21, so that it does not wear out.
また、スクリュー軸１５前端外周には、それとは逆向き
の細かい逆ねじ１４が切られ、またスリーブ２１の前端
外周には、スクリュー軸１５におけると同方向の細かい
ねじが切られているから、加熱シリンダ１１内でのスク
リュー軸１５による樹脂の溶融混練中には、スクリュー
軸１５の前後端における樹脂には、それぞれ、後方及び
前方へ向かう推力が付与され、樹脂が、スクリュー軸１
５の前端又は後端を経て、外部へ洩れ出るようなことは
ない。In addition, a fine reverse thread 14 is cut on the outer periphery of the front end of the screw shaft 15 in the opposite direction, and a fine thread 14 is cut on the outer periphery of the front end of the sleeve 21 in the same direction as the screw shaft 15, so that heating is possible. While the resin is melted and kneaded by the screw shaft 15 in the cylinder 11, a thrust toward the rear and the front is applied to the resin at the front and rear ends of the screw shaft 15, respectively, and the resin is transferred to the screw shaft 15.
There is no leakage to the outside through the front or rear end of the tube.
しかも、スクリュー軸１５の前端より突設する螺軸１６
は、前部軸受台１に支持されている伝動軸３の中心にお
ける軸受孔６に固着された駆動軸８の後端における螺孔
７に螺締されているため、全体の長さを短かくすること
ができ、また、伝動軸３との結合に、複雑な構造を必要
としないから、製作が容易で、安価に製造しうる利点が
ある。Moreover, the screw shaft 16 protrudes from the front end of the screw shaft 15.
is screwed into a screw hole 7 at the rear end of the drive shaft 8 fixed to the bearing hole 6 at the center of the transmission shaft 3 supported by the front bearing stand 1, so the overall length can be shortened. In addition, since a complicated structure is not required for coupling with the transmission shaft 3, it has the advantage of being easy to manufacture and being manufactured at low cost.
さらに、スクリュー軸１５の補修点検や交換を行うとき
には、加熱シリンダ１１の前端のフランジ１２を、前部
軸受台１より外し、しかる後、加熱シリンダ１１と後部
軸受台２３とをやや後退させて、スクリュー軸１５の前
端部分を露出させてから、スクリュー軸１５の前端の螺
軸１６を、駆動軸８の後端の螺孔７から螺脱することに
より、スクリュー軸１５を、スリーブ２１の後端から或
いは、加熱シリンダ１１の前端から、簡単に抜取ること
ができるので便利である。Furthermore, when performing repair inspection or replacement of the screw shaft 15, the flange 12 at the front end of the heating cylinder 11 is removed from the front bearing pedestal 1, and then the heating cylinder 11 and the rear bearing pedestal 23 are moved back slightly. After exposing the front end portion of the screw shaft 15, the screw shaft 16 at the front end of the screw shaft 15 is unscrewed from the screw hole 7 at the rear end of the drive shaft 8, so that the screw shaft 15 is attached to the rear end of the sleeve 21. It is convenient because it can be easily removed from the heating cylinder 11 or from the front end of the heating cylinder 11.
図面は、本考案に係る押出成型機におけるスクリューの
支持装置の実施例を示す縦断側面図である。
１・・・・・・前部軸受台、２・・・・・・プーリー、
３・・・・・・伝動軸、４・・・・・・ラジアル軸受、
５・・・・・・スラスト軸受、６・・・・・・軸受孔、
７・・・・・・螺孔、８・・・・・・駆動軸、９・・・
・・・キー、１０・・・・・・吐出口、１１・・・・・
・加熱シリンダ、１２・・・・・・外向フランジ、１３
・・・・・・ボルト、１４・・・・・・逆ねじ、１５・
・・・・・スクリュー軸、１６・・・・・・螺軸、１７
・・・・・・ホッパー、１８・・・・・・樹脂供給孔、
１９・・・・・・軸受孔、２０・・・・・・ねじ、２１
・・・・・・スリーブ、２２・・・・・・軸受、２３・
・・・・・後部軸受台、２４・・・・・・軸部、２５・
・・・・・フランジ、２６・・・・・・ボルト。The drawing is a longitudinal sectional side view showing an embodiment of a screw support device in an extrusion molding machine according to the present invention. 1...Front bearing stand, 2...Pulley,
3...Transmission shaft, 4...Radial bearing,
5... Thrust bearing, 6... Bearing hole,
7...Threaded hole, 8...Drive shaft, 9...
...Key, 10...Discharge port, 11...
・Heating cylinder, 12...Outward flange, 13
...Bolt, 14...Reverse thread, 15.
...screw shaft, 16 ... spiral shaft, 17
...Hopper, 18...Resin supply hole,
19...Bearing hole, 20...Screw, 21
... Sleeve, 22 ... Bearing, 23.
... Rear bearing stand, 24 ... Shaft part, 25.
...Flange, 26...Bolt.
Claims (1)
た軸受孔に後端中心部に螺孔を有する駆動軸を嵌合して
、両者を適宜結合し、前部軸受台の後端に、前部に吐出
口を有する加熱シリンダの前端を着脱自在に固定すると
ともに、該加熱シリンダにスクリュー軸を貫挿し、スク
リュー軸の前端中心部より突設した螺軸を、前記駆動軸
後端の螺孔に螺締し、かつホッパーを軸受孔の前部に連
通させた後部軸受台における軸受孔の後部に、スリーブ
を回動可能に挿設し、該スリーブに、スクリュー軸の後
端軸部を、スリーブと共に一体回転するように嵌合し、
かつ加熱シリンダの後端部を、後部軸受台の前端に着脱
自在に固定してなる押出成型機におけるスクリューの支
持装置。A drive shaft having a screw hole at the center of the rear end is fitted into a bearing hole drilled in the center of the transmission shaft rotatably supported on the front bearing pedestal, and the two are connected appropriately. A front end of a heating cylinder having a discharge port at the front is removably fixed to the rear end, a screw shaft is inserted through the heating cylinder, and a screw shaft protruding from the center of the front end of the screw shaft is attached to the drive shaft. A sleeve is rotatably inserted into the rear part of the bearing hole in the rear bearing stand which is screwed into the screw hole at the rear end and communicates the hopper with the front part of the bearing hole. The end shaft portion is fitted so as to rotate together with the sleeve,
and a support device for a screw in an extrusion molding machine, in which the rear end of the heating cylinder is detachably fixed to the front end of the rear bearing stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979081997U JPS602910Y2 (en) | 1979-06-15 | 1979-06-15 | Screw support device in extrusion molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979081997U JPS602910Y2 (en) | 1979-06-15 | 1979-06-15 | Screw support device in extrusion molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56524U JPS56524U (en) | 1981-01-06 |
| JPS602910Y2 true JPS602910Y2 (en) | 1985-01-26 |
Family
ID=29315244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979081997U Expired JPS602910Y2 (en) | 1979-06-15 | 1979-06-15 | Screw support device in extrusion molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS602910Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5107165B2 (en) * | 2008-07-11 | 2012-12-26 | 株式会社日本製鋼所 | Bearing structure at the tip of the screw shaft in a two-axis different-direction non-meshing extruder |
-
1979
- 1979-06-15 JP JP1979081997U patent/JPS602910Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56524U (en) | 1981-01-06 |
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