JP3159831B2 - Gear pump - Google Patents
Gear pumpInfo
- Publication number
- JP3159831B2 JP3159831B2 JP11032193A JP11032193A JP3159831B2 JP 3159831 B2 JP3159831 B2 JP 3159831B2 JP 11032193 A JP11032193 A JP 11032193A JP 11032193 A JP11032193 A JP 11032193A JP 3159831 B2 JP3159831 B2 JP 3159831B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- gear pump
- shaft
- pump
- casing
- 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 - Fee Related
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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
- B29C48/37—Gear pumps
Description
【０００１】[0001]
【産業上の利用分野】本発明は液体又は溶融した樹脂等
の粘性流体を送り出すためのギヤーポンプで、特に摩耗
性を持つフイラーの入った溶融樹脂用押出しに有効なギ
ヤーポンプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear pump for feeding a viscous fluid such as a liquid or a molten resin, and more particularly to a gear pump effective for extruding a molten resin containing a wearable filler.
【０００２】[0002]
【従来の技術】最近、合成樹脂の成形加工の分野では複
合樹脂のシート成形や異形押出成形を行うに当り、押出
機の先端に直接ギヤーポンプを取付けて押出機で混練し
た複合樹脂をギヤーポンプで昇圧してダイスから押出し
て成形する方法が採用されつつある。2. Description of the Related Art In recent years, in the field of synthetic resin molding, when performing sheet molding or profile extrusion molding of a composite resin, a gear pump is directly attached to the tip of the extruder, and the composite resin kneaded by the extruder is pressurized by a gear pump. Extruded from a die and molded.
【０００３】この方式は従来のように一旦押出機で混練
した複合材料をペレット化し、そのペレットを成形用押
出機で再溶融させて押出成形する方法に比べて押出機が
１台で済むこと、原料の熱履歴が少いため熱劣化が少い
こと、装置がコンパクトになりプロセスの簡略化が計れ
ること等のメリットがあるため、今後益々多用化される
可能性がある。This method requires only one extruder as compared with a conventional method in which a composite material once kneaded by an extruder is pelletized, and the pellets are remelted by a molding extruder and extruded. There are merits such as less thermal deterioration due to a small heat history of the raw materials, and a reduction in the size of the apparatus and the simplification of the process.
【０００４】然るに一般の成形に使用されるギヤーポン
プはダイから溶融樹脂を押出すためには４５０〜５００
ｋｇ／ｃｍ2 の高い吐出圧力が要求され、図２に示すよ
うなギヤーポンプが使用されている。即ち胴５及び側板
６，６で構成されるケーシングの一方からギヤー軸２ｃ
及びギヤー軸３ｃを挿入し、ケーシング内にセットされ
たギヤー２とギヤー３とを夫々かみ合わせて取付けら
れ、ギヤー軸２ａ，２ｂ及びギヤー軸３ａ，３ｂはいず
れもケーシング内の歯車用軸受４に回転自在に保持され
ている。[0004] However, the gear pump used for general molding requires 450-500 to extrude the molten resin from the die.
A high discharge pressure of kg / cm 2 is required, and a gear pump as shown in FIG. 2 is used. That is, the gear shaft 2c is provided from one of the casings composed of the body 5 and the side plates 6
And the gear shaft 3c is inserted, and the gear 2 and the gear 3 set in the casing are engaged with each other and mounted. It is freely held.
【０００５】また、ギヤー軸２ｃ及びギヤー軸３ｃが側
板６を貫通する部分には冷却ジャケット７が設けられて
いる。押出機（図示せず）から供給される溶融状態の樹
脂原料はギヤー２及びギヤー３により昇圧され吐出され
る。この間、樹脂原料の一部がギヤー軸２ａ、２ｂ及び
ギヤー軸３ａ、３ｂと各軸受４とのすき間に流入し、潤
滑剤として作用する。更に軸受４からギヤー軸２ｃ及び
ギヤー軸３ｃ側に流出しようとする樹脂原料は冷却ジャ
ケット７により冷却され、固化されて軸封部材として作
用する。A cooling jacket 7 is provided at a portion where the gear shaft 2c and the gear shaft 3c pass through the side plate 6. The resin material in a molten state supplied from an extruder (not shown) is pressurized and discharged by gears 2 and 3. During this time, a part of the resin raw material flows into the gap between the gear shafts 2a and 2b and the gear shafts 3a and 3b and each bearing 4, and acts as a lubricant. Further, the resin material which is about to flow out from the bearing 4 to the gear shaft 2c and the gear shaft 3c is cooled by the cooling jacket 7, solidified, and acts as a shaft sealing member.
【０００６】[0006]
【発明が解決しようとする課題】上記のような従来のギ
ヤーポンプをタルク、シリカ等無機質のフイラーが混入
された複合樹脂原料の押出しに使用した場合、ギヤーポ
ンプ内の軸と軸受部に流入するフイラーによって軸受部
等が極めて短時間に摩耗し長期間連続して安定運転する
ことができないという問題があった。When the conventional gear pump as described above is used for extruding a composite resin raw material mixed with an inorganic filler such as talc, silica, etc., the shaft and the bearing inside the gear pump are filled with a filler. There has been a problem that the bearings and the like are worn out in a very short time and cannot be operated stably continuously for a long time.
【０００７】[0007]
【課題を解決する手段】本発明は上記問題点を解決せん
とするもので、その要旨は押出機で混練溶融した複合樹
脂原料を昇圧してダイスから押出すためのギヤーポンプ
において、ギヤー軸をケーシングの両側に貫通して突出
させ、ギヤー軸を受ける軸受をケーシングの外側に別個
に設けたことを特徴とするギヤーポンプにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the gist of the present invention is to provide a gear pump for pressurizing a composite resin material kneaded and melted by an extruder and extruding the same from a die. The gear pump is characterized in that bearings are provided separately on the outside of the casing so as to penetrate and protrude on both sides of the gear pump and receive the gear shaft.
【０００８】[0008]
【作用】このように構成されたギヤーポンプにおいて、
ギヤー軸２ｃ、２ｄ及びギヤー軸３ｃ、３ｄをそれぞれ
支持する軸受４は、潤滑油等の潤滑剤で潤滑される。In the gear pump configured as described above,
The bearings 4 supporting the gear shafts 2c and 2d and the gear shafts 3c and 3d are lubricated with a lubricant such as a lubricating oil.
【０００９】[0009]
【実施例】以下、本発明を図面に基づき更に詳細に説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the drawings.
【００１０】図１は本発明のギヤーポンプの一例を示す
構成図である。FIG. 1 is a configuration diagram showing an example of a gear pump according to the present invention.
【００１１】本発明のギヤーポンプ１は胴部５，５及び
側板６，６に囲繞されたケーシング内に第１歯車２及び
第２歯車３が非かみあいで逆回転するように設けられ、
第１歯車２及び第２歯車３は前記ケーシングの両側を貫
通するギヤー軸２ｃ，２ｄ及び３ｃ，３ｄに回転自在に
支持されてなり、該ギヤー軸２ｃ，２ｄ及び３ｃ，３ｄ
は夫々ケーシング外部に設けた軸受４，４で回転自在に
支承し固定されている。ギヤーポンプ１の一方の側には
歯車装置１１が設けられており、該歯車装置１１は胴部
１４及び側板１５からなるケーシング内には相互にかみ
あう第３歯車１２及び第４歯車１３がギヤー軸１２ａ，
１２ｂ，１３ａ，１３ｂにより一体化固定されて支持さ
れてなり、ギヤーポンプ１側のギヤー軸１２ａ，１３ａ
は軸方向及び軸直角方向に可撓であり中央部でフランジ
結合される例えばギヤーカップリング形式の軸接手装置
２１、２１を介してギヤーポンプ１の歯車装置１１側に
突出したギヤー軸２ｃ，３ｃに連結されている。歯車装
置１１の側板１５を貫通して伸びるギヤー軸１３ｂは駆
動源に接続されている。The gear pump 1 of the present invention is provided in a casing surrounded by body portions 5, 5 and side plates 6, 6 such that a first gear 2 and a second gear 3 rotate in a non-meshing manner and rotate in reverse.
The first gear 2 and the second gear 3 are rotatably supported by gear shafts 2c, 2d and 3c, 3d penetrating both sides of the casing, and the gear shafts 2c, 2d and 3c, 3d.
Are rotatably supported and fixed by bearings 4 and 4 provided outside the casing, respectively. A gear device 11 is provided on one side of the gear pump 1, and the gear device 11 has a third gear 12 and a fourth gear 13 meshing with each other in a casing including a body 14 and a side plate 15 and a gear shaft 12a. ,
The gear shafts 12a, 13a on the side of the gear pump 1 are integrally fixed and supported by 12b, 13a, 13b.
Are connected to the gear shafts 2c, 3c which are flexible in the axial direction and the direction perpendicular to the shaft and which are flange-connected at the center and which project to the gear device 11 side of the gear pump 1 through shaft coupling devices 21, 21 of a gear coupling type, for example. Are linked. A gear shaft 13b extending through the side plate 15 of the gear device 11 is connected to a drive source.
【００１２】また、胴部５および側板６とギヤー軸２
ｃ，２ｄ，３ｃ，３ｄとの間には冷却ジャケット７を設
けてあり、これにより樹脂を固化させ樹脂もれを防止で
きる。The body 5 and the side plate 6 and the gear shaft 2
A cooling jacket 7 is provided between c, 2d, 3c, and 3d, thereby solidifying the resin and preventing resin leakage.
【００１３】上記のように構成された装置において歯車
装置１１のギヤー軸１３ｂを駆動源により回転駆動する
と、ギヤーポンプ１内に充満する溶融状態の複合樹脂原
料は、その１部がギヤー軸２ｃ，２ｄ，３ｃ，３ｄとそ
れぞれの側板６貫通部に設けられた冷却ジャケット７と
のすき間に流入し、冷却固化されて軸封部材として作用
し、複合樹脂原料はギヤーポンプ１の外部に漏洩しな
い。それ故、ケーシングの外側に設けられたギヤー軸２
ｃ，２ｄ，３ｃ，３ｄの各軸受４は、複合樹脂原料の流
入が無く、潤滑油等の潤滑材のみで潤滑される。なお、
ギヤーポンプ１の第１歯車２と第２歯車３とは歯面を接
触させることなく、回転している。When the gear shaft 13b of the gear unit 11 is rotationally driven by the drive source in the apparatus configured as described above, a part of the molten composite resin material filled in the gear pump 1 is partially divided into the gear shafts 2c and 2d. , 3c, 3d and the cooling jacket 7 provided at the penetrating portion of each side plate 6, and is cooled and solidified to act as a shaft sealing member, so that the composite resin material does not leak out of the gear pump 1. Therefore, the gear shaft 2 provided outside the casing
Each of the bearings 4c, 2d, 3c and 3d is lubricated only by a lubricant such as a lubricating oil without the inflow of the composite resin material. In addition,
The first gear 2 and the second gear 3 of the gear pump 1 are rotating without contacting the tooth surfaces.
【００１４】[0014]
【発明の効果】以上述べたように本発明によれば研磨性
の高い高濃度のフイラーを混入した樹脂原料の押出し運
転に際しても軸受部を直接原料に接触させないことによ
りギヤーポンプの軸受部等がフイラーによって摩耗する
ことがなく、長期間連続して安定して運転することが可
能となる。As described above, according to the present invention, even in the operation of extruding a resin raw material mixed with a high-concentration filler having a high abrasiveness, the bearing portion of the gear pump is not directly contacted with the raw material so that the bearing portion of the gear pump can be used. Therefore, it is possible to continuously and stably operate for a long time without wear.
【図１】本発明のギヤーポンプの一実施例を示す構成図FIG. 1 is a configuration diagram showing an embodiment of a gear pump according to the present invention.
【図２】従来のギヤーポンプの構成図FIG. 2 is a configuration diagram of a conventional gear pump.
１ ギヤーポンプ ２ 第１歯車 ２ａ，２ｂ，２ｃ，２ｄ ギヤー軸 ３ 第２歯車 ３ａ，３ｂ，３ｃ，３ｄ ギヤー軸 ４ 軸受 ５ 胴部 ６ 側板 ７ 冷却ジャケット １１ 歯車装置 １２ 第３歯車 １２ａ，１２ｂ ギヤー軸 １３ 第４歯車 １３ａ，１３ｂ ギヤー軸 １４ 胴部 １５ 側板 １６ 軸受 ２１ 軸接手装置 DESCRIPTION OF SYMBOLS 1 Gear pump 2 1st gear 2a, 2b, 2c, 2d Gear shaft 3 2nd gear 3a, 3b, 3c, 3d Gear shaft 4 Bearing 5 Body 6 Side plate 7 Cooling jacket 11 Gear device 12 3rd gear 12a, 12b Gear shaft 13 Fourth Gear 13a, 13b Gear Shaft 14 Body 15 Side Plate 16 Bearing 21 Shaft Joint Device
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−301224（ＪＰ，Ａ) 実開 平４−6784（ＪＰ，Ｕ) 実開 昭57−115979（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 47/00 - 47/96 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-301224 (JP, A) JP-A-4-6784 (JP, U) JP-A-57-115979 (JP, U) (58) Survey Field (Int. Cl. 7 , DB name) B29C 47/00-47/96
Claims (1)
圧してダイスから押出すためのギヤーポンプにおいて、
ギヤー軸をケーシングの両側に貫通して突出させ、ギヤ
ー軸を受ける軸受をケーシングの外側に別個に設けたこ
とを特徴とするギヤーポンプ。1. A gear pump for pressurizing a composite resin raw material kneaded and melted by an extruder and extruding the same from a die,
A gear pump characterized in that a gear shaft penetrates and protrudes from both sides of a casing and bearings for receiving the gear shaft are separately provided outside the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032193A JP3159831B2 (en) | 1993-05-12 | 1993-05-12 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032193A JP3159831B2 (en) | 1993-05-12 | 1993-05-12 | Gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06320601A JPH06320601A (en) | 1994-11-22 |
| JP3159831B2 true JP3159831B2 (en) | 2001-04-23 |
Family
ID=14532767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11032193A Expired - Fee Related JP3159831B2 (en) | 1993-05-12 | 1993-05-12 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3159831B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200481435Y1 (en) * | 2014-06-20 | 2016-09-30 | (주)아이마이 | Multi-lantern |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH039405A (en) * | 1989-06-07 | 1991-01-17 | Fanuc Ltd | Method for forming working program of cylindrical groove shape |
| US5829647A (en) * | 1996-07-23 | 1998-11-03 | Nordson Corporation | Metering gearhead dispensing apparatus having selectively positionable gear pumps |
| CN102338080A (en) * | 2011-05-13 | 2012-02-01 | 广州市普同实验分析仪器有限公司 | Melt pump |
-
1993
- 1993-05-12 JP JP11032193A patent/JP3159831B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200481435Y1 (en) * | 2014-06-20 | 2016-09-30 | (주)아이마이 | Multi-lantern |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06320601A (en) | 1994-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |