JPS6237693Y2 - - Google Patents
Info
- Publication number
- JPS6237693Y2 JPS6237693Y2 JP1981039280U JP3928081U JPS6237693Y2 JP S6237693 Y2 JPS6237693 Y2 JP S6237693Y2 JP 1981039280 U JP1981039280 U JP 1981039280U JP 3928081 U JP3928081 U JP 3928081U JP S6237693 Y2 JPS6237693 Y2 JP S6237693Y2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- screw
- screw feeder
- material supply
- flight
- 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
- 239000002994 raw material Substances 0.000 claims description 33
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【考案の詳細な説明】
本考案は押出機、射出成形機、その他スクリユ
フイーダ全般に応用できる原料処理装置に関する
ものである。[Detailed Description of the Invention] The present invention relates to a raw material processing device that can be applied to extruders, injection molding machines, and other screw feeders in general.
スクリユフイーダは、一般に押出機、射出成形
機等に装着されて、樹脂原料（ペレツト又はパウ
ダ）を定量的に供給するために使用される。従つ
てスクリユフイーダはその性能上、
吐出量に変動がないこと。 A screw feeder is generally attached to an extruder, injection molding machine, etc., and is used to quantitatively supply resin raw materials (pellets or powder). Therefore, due to its performance, there should be no fluctuation in the discharge amount of the screw feeder.
吐出量の使用可能な範囲が広いこと。 Wide usable range of discharge amount.
が重要である。is important.
しかし従来のスクリユフイーダでは、吐出量が
変動し、製品の寸法精度等がばらついて製品の収
率が悪くなるという不具合があつた。この不具合
の原因を第１図〜第３図に基いて説明すると、第
１図は従来のスクリユフイーダの構造図、第２図
は第１図のＡ〜Ａ断面図、第３図は第２図のＢ〜
Ｂ断面図である。さて図中１は原料搬送用スクリ
ユ、２はシリンダ、３はホツパ、４は原料供給
部、５はスクリユ１に於けるフライト、６はシリ
ンダ先端部で、かつ原料の出口、７は原料供給口
に於ける前縁、９は原料である。 However, conventional screw feeders have had problems in that the discharge amount fluctuates, the dimensional accuracy of the product varies, and the yield of the product deteriorates. The cause of this problem will be explained based on Figs. 1 to 3. Fig. 1 is a structural diagram of a conventional screw feeder, Fig. 2 is a sectional view from A to A in Fig. 1, and Fig. 3 is a sectional view of the conventional screw feeder. B~
It is a sectional view of B. In the figure, 1 is a screw for transporting raw materials, 2 is a cylinder, 3 is a hopper, 4 is a raw material supply section, 5 is a flight in the screw 1, 6 is the tip of the cylinder and a raw material outlet, and 7 is a raw material supply port. The leading edge in , 9 is the raw material.
ここでスクリユ１はスクリユ駆動用モータ（図
示せず）により回転される。またホツパ３の中に
ある原料は、原料供給部４を通つてスクリユ１に
より搬送され、原料出口６から送り出される。原
料出口６から送り出された原料は、押出機等の原
料処理装置（図示せず）に供給される。ところ
が、第２図の×部分にある原料は、スクリユ１の
１回転毎（即ち、フライト５が前縁７の近くを通
過する毎）に、フライト５と原料供給口の前縁７
に挾み込まれ、切断される。第３図は樹脂原料９
がフライト５と前縁７により切断されている状態
を示す。 Here, the screw 1 is rotated by a screw driving motor (not shown). Further, the raw material in the hopper 3 is conveyed by the screw 1 through the raw material supply section 4 and sent out from the raw material outlet 6. The raw material sent out from the raw material outlet 6 is supplied to a raw material processing device (not shown) such as an extruder. However, the raw material in the x part of FIG.
It is sandwiched in and cut. Figure 3 shows resin raw material 9
is cut by the flight 5 and the leading edge 7.
この様に原料が切断されるときは、通常原料が
切断されていない時と比較して、相当に大きなト
ルクが必要となる。このためスクリユ駆動用モー
タの負荷が変動すると共に、スクリユの回転数が
変動する。 When the raw material is cut in this way, considerably larger torque is required than when the raw material is not normally cut. For this reason, the load on the screw driving motor fluctuates, and the rotational speed of the screw also fluctuates.
その結果、吐出量が変動して製品の寸法精度が
ばらつき、製品の収率が悪くなるという不具合が
あり、特にスクリユ１の回転数が低い時にその変
動が著しく、モータが過負荷になつて運転出来な
くなり易く、結果的にスクリユフイーダの適正使
用回転数の範囲が狭くなるという不具合があつ
た。 As a result, the discharge amount fluctuates, resulting in variations in the dimensional accuracy of the product and poor product yield.This fluctuation is especially noticeable when the rotation speed of the screw 1 is low, causing the motor to overload and cause the operation to start. There was a problem that the screw feeder could not be used easily, and as a result, the range of the appropriate rotational speed of the screw feeder was narrowed.
本考案は前記従来の様な吐出量の変動及び使用
回転数の範囲が狭いという不具合を無くして、製
品の寸法精度を向上すること及びスクリユフイー
ダの適正使用回転数の範囲を広くすることを目的
とするものである。即ち、本考案は原料供給口の
前縁の近くで、スクリユのフライトの一部を切り
欠くことにより、原料供給部の内径との隙間を部
分的に大きくしたスクリユフイーダを装着してな
る原料処理装置を提供せんとするものである。 The purpose of this invention is to improve the dimensional accuracy of the product and to widen the range of appropriate rotational speeds for the screw feeder by eliminating the above-mentioned conventional problems of fluctuations in discharge amount and narrow range of rotational speeds. It is something to do. That is, the present invention provides a raw material processing device equipped with a screw feeder in which the gap between the screw feeder and the inner diameter of the raw material supply section is partially enlarged by cutting out a part of the flight of the screw near the front edge of the raw material supply port. We aim to provide the following.
以下本考案の実施例を図面について説明する
と、第４図は本考案の実施例を示すスクリユフイ
ーダの側面図で、前記第１図に示す構造に於い
て、原料供給口の前縁７の近くで、スクリユ１の
フライト５の外径を一部切り欠いて部分的に小さ
くする（第４図の８）ことにより、原料供給部４
の内径との隙間を部分的に大きくなるようにした
ものである。また第５図は第４図のＣ〜Ｃ断面図
である。なお、この小さくする部分の外径（８の
部分）は、他の部分の外径よりも原料１個分の大
きさ程度小さくするのが良い。 An embodiment of the present invention will be explained below with reference to the drawings. Fig. 4 is a side view of a screw feeder showing an embodiment of the present invention. In the structure shown in Fig. 1, near the front edge 7 of the material supply port By cutting out a part of the outer diameter of the flight 5 of the screw 1 and making it smaller (8 in FIG. 4), the raw material supply section 4 is
The gap between the inner diameter and the inner diameter is partially increased. Moreover, FIG. 5 is a sectional view taken along line C-C in FIG. 4. Note that the outer diameter of this portion to be reduced (portion 8) is preferably smaller than the outer diameter of other portions by about the size of one raw material.
またこの小さくする部分のスクリユ軸方向の長
さは、原料供給口の前縁７の形状、寸法を勘案し
て適宜決めることが望ましいが、通常はスクリユ
の外径と同じ程度の長さより小さくても良い。 Furthermore, the length of this portion to be reduced in the direction of the screw axis should be determined appropriately by taking into account the shape and dimensions of the front edge 7 of the raw material supply port, but it is usually smaller than the length equivalent to the outer diameter of the screw. Also good.
次に作用を説明すると、前記の如く、スクリユ
のフライト５の一部を切り欠いてその外径を小さ
くする事により、原料供給口の前縁７とスクリユ
のフライト５との間で、原料の挾み込み（切断）
を無くすことができる。なお、原料供給部を大き
くした場合も同様の作用がある。 Next, to explain the function, as mentioned above, by cutting out a part of the flight 5 of the screw and reducing its outer diameter, the raw material is transferred between the leading edge 7 of the raw material supply port and the flight 5 of the screw. Inserting (cutting)
can be eliminated. Note that a similar effect can be obtained when the raw material supply section is made larger.
以上詳細に説明した如く本考案はスクリユのフ
ライトの一部を切り欠くことにより、原料供給部
の内径との隙間を部分的に大きくするようにした
ので、原料ペレツトの切断を防止して吐出量の変
動及び使用回転数の範囲が狭いという不具合を無
くし、製品の寸法精度を向上できると共に、スク
リユフイーダの適正使用回転数を広くできる。 As explained in detail above, in the present invention, by cutting out a part of the flight of the screw, the gap between it and the inner diameter of the raw material supply section is partially enlarged, thereby preventing the raw material pellets from being cut and reducing the discharge amount. This eliminates the problems of fluctuations in speed and narrow range of rotational speeds, improves the dimensional accuracy of the product, and widens the appropriate rotational speed of the screw feeder.
第１図は従来のスクリユフイーダの１例を示す
側断面図、第２図は第１図のＡ〜Ａ断面図、第３
図は第２図のＢ〜Ｂ拡大断面図、第４図は本考案
の実施例を示す原料処理装置の側断面図、第５図
は第４図のＣ〜Ｃ断面図である。
図の主要部分の説明、１……スクリユ、４……
原料供給部、２……フライト、７……前縁、８…
…フライトの外径の小さい部分。
Fig. 1 is a side sectional view showing an example of a conventional screw feeder, Fig. 2 is a sectional view taken from A to A in Fig. 1, and Fig. 3 is a sectional view showing an example of a conventional screw feeder.
The drawings are an enlarged cross-sectional view taken along line B-B in FIG. 2, FIG. 4 is a side cross-sectional view of a raw material processing apparatus showing an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line C-C in FIG. 4. Explanation of the main parts of the diagram, 1...Skrill, 4...
Raw material supply section, 2... Flight, 7... Leading edge, 8...
...the small part of the outer diameter of the flight.
Claims (1)
トの一部を切り欠くことにより、原料供給部の内
径との隙間を部分的に大きくしたスクリユフイー
ダを装着してなることを特徴とする原料処理装
置。 A raw material processing device equipped with a screw feeder in which a part of the flight of the screw is cut out near the leading edge of the raw material supply port to partially enlarge the gap between the screw feeder and the inner diameter of the raw material supply section. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981039280U JPS6237693Y2 (en) | 1981-03-20 | 1981-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981039280U JPS6237693Y2 (en) | 1981-03-20 | 1981-03-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57151715U JPS57151715U (en) | 1982-09-24 |
| JPS6237693Y2 true JPS6237693Y2 (en) | 1987-09-26 |
Family
ID=29836407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981039280U Expired JPS6237693Y2 (en) | 1981-03-20 | 1981-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237693Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012040685A (en) * | 2010-08-12 | 2012-03-01 | Fanuc Ltd | Screw for molding material supply device of injection molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5322562A (en) * | 1976-08-12 | 1978-03-02 | Nippon Oil Seal Ind Co Ltd | Material supplying device |
-
1981
- 1981-03-20 JP JP1981039280U patent/JPS6237693Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5322562A (en) * | 1976-08-12 | 1978-03-02 | Nippon Oil Seal Ind Co Ltd | Material supplying device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012040685A (en) * | 2010-08-12 | 2012-03-01 | Fanuc Ltd | Screw for molding material supply device of injection molding machine |
| US8192193B2 (en) | 2010-08-12 | 2012-06-05 | Fanuc Corporation | Molding material feed screw used in a molding material supply device of an injection molding machine |
| DE102011109593B4 (en) | 2010-08-12 | 2018-08-02 | Fanuc Corporation | Casting material feed screw used in a pouring material supply device of an injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57151715U (en) | 1982-09-24 |
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