JP2778797B2 - Screw for plastic molding machine - Google Patents
Screw for plastic molding machineInfo
- Publication number
- JP2778797B2 JP2778797B2 JP2090970A JP9097090A JP2778797B2 JP 2778797 B2 JP2778797 B2 JP 2778797B2 JP 2090970 A JP2090970 A JP 2090970A JP 9097090 A JP9097090 A JP 9097090A JP 2778797 B2 JP2778797 B2 JP 2778797B2
- Authority
- JP
- Japan
- Prior art keywords
- medium
- screw
- temperature
- temperature control
- hole
- 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
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/51—Screws with internal flow passages, e.g. for molten material
- B29C48/515—Screws with internal flow passages, e.g. for molten material for auxiliary fluids, e.g. foaming agents
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/845—Heating
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
- B29C48/85—Cooling
-
- 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
- B29C48/92—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、プラスチック材料及び添加剤等の複合材料
を溶融混練し、押出成形・射出成形等を行なうプラスチ
ック成形機用スクリューに関するものである。Description: TECHNICAL FIELD The present invention relates to a screw for a plastic molding machine that melt-kneads a plastic material and a composite material such as an additive and performs extrusion molding, injection molding, and the like.
（従来の技術） 従来、この種プラスチック成形機用スクリューとして
は、シリンダバレル内に回転自在に嵌装され、後端に駆
動軸が直結されると共に、スクリュー及び駆動軸の中心
部に温度制御媒体給排路が連通状に配設され、送出され
る溶融樹脂温度を制御できるようにしたものがある。な
お、スクリューは、作用的に区分すると、先端部から計
量域、圧縮（混練ともいう）域、移送域等に分けられて
いる。そして、前記温度制御媒体としては、60℃以下の
水等の低温媒体が用いられ、主にスクリューの冷却を目
的とした温度制御が行なわれている。しかし、アクリル
ニトリル樹脂等の高粘度の材料の場合は、低温媒体を使
用すると、冷却による浅溝効果が生じ、溶融樹脂押出量
の低下、スクリュー駆動トルクの増大が起る。そこで、
高温媒体を用いて温度制御することが行なわれている。(Prior Art) Conventionally, as a screw for a plastic molding machine of this kind, a screw is rotatably fitted in a cylinder barrel, a drive shaft is directly connected to a rear end, and a temperature control medium is provided at the center of the screw and the drive shaft. There is a type in which a supply / discharge path is provided in a communicating manner so that the temperature of the molten resin to be delivered can be controlled. When the screw is operatively divided, the screw is divided into a metering region, a compression (also known as kneading) region, a transfer region, and the like from the tip. As the temperature control medium, a low temperature medium such as water at 60 ° C. or lower is used, and temperature control is mainly performed for cooling the screw. However, in the case of a high-viscosity material such as an acrylonitrile resin, when a low-temperature medium is used, a shallow groove effect occurs due to cooling, and the molten resin extrusion amount decreases and the screw driving torque increases. Therefore,
Temperature control is performed using a high-temperature medium.
（発明が解決しようとする課題） ところで、スクリュー内の温度調節による送出溶融樹
脂の温度制御は、スクリュー先端部の計量域において必
要であるが、従来技術では、高温媒体が溶融樹脂との熱
交換によってさらに昇温され、スクリューの移送域から
後端へと流通するため、該移送域では媒体温度が溶融樹
脂温度以上となる。(Problems to be Solved by the Invention) By the way, the temperature control of the molten resin to be sent out by adjusting the temperature inside the screw is necessary in the metering region at the tip of the screw. The temperature of the medium in the transfer area is equal to or higher than the temperature of the molten resin.
したがって、スクリューの移送域では、プラスチック
材料等が溶融し、スクリューへの巻付きが生じ、サージ
ング現象やスクリュー駆動トルクの増大を生起し、溶融
樹脂の送出が不可能になるなどの問題があった。Therefore, in the transfer area of the screw, the plastic material or the like is melted, and wrapping around the screw occurs, causing a surging phenomenon and an increase in screw drive torque. .
本発明は、上述のような実状に鑑みてなされたもの
で、その目的とするところは、スクリューの移送域にお
ける材料の溶融防止を図り、スクリューへの材料巻付
き、サージング現象等の生起しない適正でかつ安定した
温度制御を行なうことができるプラスチック成形機用ス
クリューを提供するにある。The present invention has been made in view of the above situation, and aims at preventing melting of a material in a transfer region of a screw, wrapping the material around the screw, and preventing occurrence of a surging phenomenon. Another object of the present invention is to provide a screw for a plastic molding machine which can perform stable and stable temperature control.
（課題を解決するための手段） 本発明では、上記目的を達成するために、次の技術的
手段を講じた。(Means for Solving the Problems) In the present invention, the following technical means have been taken in order to achieve the above object.
すなわち、本発明は、シリンダバレル１内に回転可能
に嵌装され、移送域Ｆ、圧縮域Ｃ及び計量域Ｍ等からな
るプラスチック成形機用スクリューにおいて、スクリュ
ー７の中心部には後端から先端近傍に温度制御媒体給排
路13,14が同心状に設けられ、前記移送域Ｆのスクリュ
ー７内には前記媒体給排路14の外周に移送域断熱層15が
設けられていることを特徴としている。That is, the present invention relates to a screw for a plastic molding machine which is rotatably fitted in a cylinder barrel 1 and includes a transfer zone F, a compression zone C, a metering zone M, and the like. Temperature control medium supply / discharge paths 13 and 14 are provided concentrically in the vicinity, and a transfer area heat insulating layer 15 is provided on the outer periphery of the medium supply / discharge path 14 in the screw 7 of the transfer area F. And
そして、前記温度制御媒体給排路13,14を形成する媒
体流通管11の支持部材19には、媒体の流れに乱れを与え
る媒体流通部20を設けている。The support member 19 of the medium flow pipe 11 forming the temperature control medium supply / discharge passages 13 and 14 is provided with a medium flow section 20 that disturbs the flow of the medium.
（作 用） 本発明によれば、スクリュー７の温度制御媒体給排路
13,14に、高温媒体（例えば200〜250℃の溶融樹脂送出
温度と同程度の流体）を供給し流通させると共に、移送
域断熱層15に冷却媒体を流通させることにより、計量域
Ｍ及び圧縮域Ｃの温度を適正に調節でき、所要温度の溶
融樹脂を安定的に送出できる。そして、スクリュー７の
移送域においては、スクリュー７先端部において溶融樹
脂により昇温された高温媒体は断熱層15の内側を流通す
るので、スクリュー７の移送域Ｆ外周部に伝導される熱
の一部が冷却媒体によって外部へ搬出され、移送域Ｆ外
周部の温度が樹脂溶融温度以下の適正値に保持される。(Operation) According to the present invention, the temperature control medium supply / discharge path of the screw 7 is provided.
A high-temperature medium (for example, a fluid having the same temperature as the molten resin delivery temperature of 200 to 250 ° C.) is supplied to and circulated through the cooling medium 13 and 14, and a cooling medium is circulated through the heat insulating layer 15 in the transfer area. The temperature in the zone C can be appropriately adjusted, and the molten resin at a required temperature can be stably delivered. In the transfer area of the screw 7, the high-temperature medium heated by the molten resin at the tip of the screw 7 flows inside the heat insulating layer 15. The portion is carried out to the outside by the cooling medium, and the temperature of the outer peripheral portion of the transfer area F is maintained at an appropriate value equal to or lower than the resin melting temperature.
また、本発明によれば、支持部材19により媒体の流れ
を乱すよう構成しているので、熱交換効率が向上する。Further, according to the present invention, since the support member 19 is configured to disturb the flow of the medium, the heat exchange efficiency is improved.
（実施例） 以下、本発明の実施例を図面に基づき説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
図面において、１はシリンダバレルで、一端部に材料
供給口２を有すると共に、他端に押出口３を有し、外周
に熱盤４を備えており、材料供給口２側が支持台５を介
して台盤６上に載設されている。７はスクリューで、前
記シリンダバレル１内に回転自在に嵌装され、先端がコ
ーン部7aとされ、作用的に区分すると先端側から計量域
Ｍ、圧縮（又は混練）域Ｃ及び移送域Ｆ等に分けられ、
後端が前記シリンダバレル１から延出されて、駆動軸８
端に嵌入されキー９により連結されている。そして、該
スクリュー７の中心部には、後端から先端近傍にまで延
びる媒体流通孔10が設けられ、温度制御媒体流通内管11
及び外管12が、所定の間隙を保持して嵌装されており、
前記内管11内が温度制御媒体供給路13、内管11外側及び
外管12内側が温度制御媒体排出路14、外管12の外側と前
記媒体流通孔10内面との間が移送域断熱層15となってい
る。なお、スクリュー７の後端部には、前記断熱層15内
への冷却媒体供給孔16及び排出孔17が設けられると共
に、駆動軸冷却媒体排出孔18が設けられている。In the drawings, reference numeral 1 denotes a cylinder barrel having a material supply port 2 at one end, an extrusion port 3 at the other end, and a hot platen 4 on the outer periphery. It is mounted on the base plate 6. Reference numeral 7 denotes a screw, which is rotatably fitted in the cylinder barrel 1 and has a cone portion 7a at the tip. When operatively divided, the metering zone M, the compression (or kneading) zone C, the transfer zone F, etc. Divided into
A rear end extends from the cylinder barrel 1 and has a drive shaft 8.
It is fitted to the end and connected by a key 9. At the center of the screw 7, a medium flow hole 10 extending from the rear end to the vicinity of the front end is provided.
And the outer tube 12 is fitted while holding a predetermined gap,
The inside of the inner tube 11 is a temperature control medium supply passage 13, the outside of the inner tube 11 and the inside of the outer tube 12 are a temperature control medium discharge passage 14, and a transfer area heat insulating layer between the outside of the outer tube 12 and the inside of the medium flow hole 10. It has become 15. At the rear end of the screw 7, a cooling medium supply hole 16 and a discharge hole 17 into the heat insulating layer 15 are provided, and a drive shaft cooling medium discharge hole 18 is provided.
また、前記温度制御媒体流通外管12は、その前端がス
クリュー７の圧縮域Ｃと移送域Ｆの境界部分に位置し、
その後端が若干突出している。Also, the front end of the temperature control medium flow outer pipe 12 is located at a boundary between the compression zone C and the transfer zone F of the screw 7,
Its rear end is slightly protruding.
そして、前記媒体流通内管11の前端部は、複数の支持
部材19により媒体流通孔10の内周面に支持されている。
前記支持部材19は、第３図に示すように、前面からみて
略十字状で、媒体流通孔10の周壁との間に切欠状の媒体
流通部20が形成され、温度制御媒体にダム効果を与え、
媒体を乱流状態で流通させ、熱伝導効率の向上が図られ
ている。The front end of the medium passage inner pipe 11 is supported on the inner peripheral surface of the medium passage hole 10 by a plurality of support members 19.
As shown in FIG. 3, the support member 19 has a substantially cross shape when viewed from the front, and has a notched medium flow portion 20 formed between the support member 19 and the peripheral wall of the medium flow hole 10 to provide a dam effect to the temperature control medium. Give
The medium is circulated in a turbulent state to improve heat conduction efficiency.
前記冷却媒体供給孔16及び排出孔17の出入口には、冷
却媒体供給周溝21及び供給口22と冷却媒体排出周溝23及
び排出口24を備えたリング状のシールキャップ25がスク
リュー７に相対回転可能に被嵌され、該シールキャップ
25はシリンダバレル１の後端にカバー26を介して固着さ
れている。また、前記駆動軸冷却媒体排出孔18の出口部
には、リング状の変流カバー27が固着されている。At the entrance and exit of the cooling medium supply hole 16 and the discharge hole 17, a ring-shaped seal cap 25 having a cooling medium supply peripheral groove 21 and a supply port 22, a cooling medium discharge peripheral groove 23 and a discharge port 24 is opposed to the screw 7. The seal cap is rotatably fitted.
Reference numeral 25 is fixed to the rear end of the cylinder barrel 1 via a cover 26. At the outlet of the drive shaft cooling medium discharge hole 18, a ring-shaped current changing cover 27 is fixed.
前記駆動軸８は中空状で、油圧モータ28の出力軸28a
と一体化されて、台盤29上に設けた軸受台30に、軸受3
1、32、推力軸受33を介して回転自在に軸支されてい
る。なお、前記油圧モータ28は、軸受台30の後端に取付
けられ、該油圧モータ28により駆動軸８を回転駆動する
ようになっている。そして、駆動軸８及び出力軸28a
は、前述のように一体物からなる中空軸で、中空部内に
は前記媒体流通内管11が出力軸28a端から外方に突出す
るように挿通され、前記内管11の外周には、外側媒体流
通管34が同心的にかつ前記内管11及び中空部内周壁面と
の間にそれぞれ間隔を保持して嵌装されている。なお、
外側媒体流通管34は、前端がスクリュー７の媒体流通孔
10後端に螺着されると共に前記媒体流通外管12の後端に
外嵌連結され、後端部がリング状カバー35を介して出力
軸28a端中空部に気密状に保持されており、外側媒体流
通管34内は媒体排出路14と連通する媒体排出路36とされ
ている。The drive shaft 8 is hollow and has an output shaft 28a of the hydraulic motor 28.
The bearing 3 is integrated with the bearing base 30 provided on the base plate 29.
1, 32, and are rotatably supported via thrust bearings 33. The hydraulic motor 28 is attached to the rear end of the bearing base 30, and the drive shaft 8 is driven to rotate by the hydraulic motor 28. Then, the drive shaft 8 and the output shaft 28a
Is a hollow shaft made of an integral body as described above, and the medium flow inner tube 11 is inserted into the hollow portion so as to protrude outward from the end of the output shaft 28a. A medium flow pipe 34 is fitted concentrically and with a space between the inner pipe 11 and the inner peripheral wall surface of the hollow portion. In addition,
The front end of the outer medium flow pipe 34 is a medium flow hole of the screw 7.
10 is screwed to the rear end and externally fitted and connected to the rear end of the medium flow outer tube 12, and the rear end is held in the hollow portion of the output shaft 28a end via a ring-shaped cover 35 in an airtight manner. The inside of the outer medium flow pipe 34 is a medium discharge path 36 communicating with the medium discharge path 14.
また、前記外側媒体流通管34の外周面には、略全長に
わたってグラスウール等からなる断熱層37が外嵌被着さ
れ、該断熱層37の外周が冷却層38を形成する冷却媒体流
通路とされ、前記スクリュー７の冷却媒体排出孔18が連
通している。そして、冷却層38には前記出力軸28aの外
端周面に設けた供給孔39から冷却媒体（例えば60℃以下
の空気）が供給されるようになっている。Further, a heat insulating layer 37 made of glass wool or the like is fitted over the outer peripheral surface of the outer medium flow pipe 34 over substantially the entire length thereof, and the outer periphery of the heat insulating layer 37 serves as a cooling medium flow passage forming a cooling layer 38. The cooling medium discharge hole 18 of the screw 7 communicates. A cooling medium (for example, air at 60 ° C. or lower) is supplied to the cooling layer 38 from a supply hole 39 provided on the outer peripheral surface of the output shaft 28a.
前記媒体流通内管11及び外側媒体流通管34の後端に
は、媒体供給口40及び排出口を備えたロータリジョイン
ト42が接続され、両管11,34が出力軸28aと共に回転可能
となっている。At the rear ends of the medium flow inner pipe 11 and the outer medium flow pipe 34, a rotary joint 42 having a medium supply port 40 and a discharge port is connected, so that both pipes 11, 34 can rotate together with the output shaft 28a. I have.
上記実施例においては、アクリルニトリル樹脂を溶融
送出する場合、温度制御媒体として200〜250℃に昇温さ
れた加熱油が使用され、冷却媒体としては、移送域Ｆ及
び駆動軸８部共に空気が使用される。なお、移送域断熱
層15には、冷却媒体を流通しない場合もある。このよう
に、スクリュー７の計量域Ｍの温度を、溶融樹脂の送出
温度と同程度に制御し、溶融樹脂送出温度が一定に保持
されるように温度調節される。また、移送域断熱層15に
おいては、シリンダバレル１内を移送中のプラスチック
材料等が溶融しない程度の最適温度に調節される。さら
に、冷却層38では、駆動軸８及び出力軸28aの外周部の
温度が約60℃以下になるように制御され、軸受部及び駆
動部である油圧モータ28の寿命の増大、シール材等の劣
化の防止を図り、円滑な運転を行なうことが可能であ
る。In the above embodiment, when the acrylonitrile resin is melted and delivered, heating oil heated to 200 to 250 ° C. is used as the temperature control medium, and air is used as the cooling medium in both the transfer zone F and the drive shaft 8 part. used. In some cases, the cooling medium does not flow through the transfer area heat insulating layer 15. In this way, the temperature of the measuring area M of the screw 7 is controlled to be substantially the same as the molten resin delivery temperature, and the temperature is adjusted so that the molten resin delivery temperature is kept constant. Further, in the transfer area heat-insulating layer 15, the temperature is adjusted to an optimum temperature such that the plastic material or the like being transferred in the cylinder barrel 1 does not melt. Further, in the cooling layer 38, the temperatures of the outer peripheral portions of the drive shaft 8 and the output shaft 28a are controlled to be about 60 ° C. or less. Deterioration can be prevented and smooth operation can be performed.
上記実施例では、温度制御媒体流通内管11内を媒体供
給路13とし、該内管11外側を媒体排出路14としたが、こ
れを逆にして該内管11内を媒体排出路とし該内管11外側
を媒体供給路とすることができる。In the above embodiment, the inside of the temperature control medium flowing inner pipe 11 was used as the medium supply path 13, and the outside of the inner pipe 11 was used as the medium discharge path 14. The outside of the inner tube 11 can be used as a medium supply path.
また、温度制御媒体としては、高温媒体に限らず、中
温、低温媒体をも使用することができ、プラスチック材
料の性質に応じて、適宜選択使用することができる。The temperature control medium is not limited to the high temperature medium, but may be a medium temperature or low temperature medium, and may be appropriately selected and used according to the properties of the plastic material.
第４図及び第５図は、温度制御媒体流通内管11の支持
部材19の他の実施例を示し、断面形状が略Ｙ字形で中心
部に貫通状の媒体通孔43が設けられ、該孔43の両端開口
に前記内管11が螺着されており、管継手として利用され
ている。FIGS. 4 and 5 show another embodiment of the support member 19 of the temperature control medium flow inner tube 11, which has a substantially Y-shaped cross section and a through-hole medium through hole 43 provided at the center. The inner pipe 11 is screwed into openings at both ends of the hole 43, and is used as a pipe joint.
本発明は、上記実施例に限定されるものではなく、適
宜設計変更できる。The present invention is not limited to the above embodiment, and can be appropriately designed and changed.
（発明の効果） 本発明は、上述のように、シリンダバレル１内に回転
可能に嵌装され、移送域Ｆ、圧縮域Ｃ及び計量域Ｍ等か
らなるプラスチック成形機用スクリューにおいて、スク
リュー７の中心部には後端から先端近傍に温度制御媒体
給排路13,14が同心状に設けられ、前記移送域Ｆのスク
リュー７内には前記媒体給排路14の外周に移送域断熱層
15が設けられていることを特徴とするものであるから、
スクリュー７の計量域Ｍの温度すなわち送出溶融樹脂温
度を、冷却媒体或いは加熱媒体等を用いて広範囲にかつ
適正に制御でき、また、移送域Ｆの温度上昇を防止して
樹脂の溶融による巻付き、サージング現象並びにスクリ
ュー駆動トルクの増大を防ぎ、円滑な運転を行なうこと
ができる。(Effect of the Invention) As described above, the present invention relates to a screw for a plastic molding machine which is rotatably fitted in the cylinder barrel 1 and includes a transfer zone F, a compression zone C, a metering zone M and the like. At the center, temperature control medium supply / discharge paths 13 and 14 are provided concentrically from the rear end to the vicinity of the front end, and in the screw 7 of the transfer area F, the transfer area heat insulating layer
Because it is characterized by the fact that 15 is provided,
The temperature of the measuring area M of the screw 7, that is, the temperature of the molten resin to be sent out can be controlled over a wide range and appropriately using a cooling medium or a heating medium. In addition, a surging phenomenon and an increase in screw driving torque can be prevented, and smooth operation can be performed.
そして、媒体の流れが乱流となるので、熱交換効率が
向上する。And since the flow of the medium becomes turbulent, the heat exchange efficiency is improved.
図面は本発明の実施例を示すもので、第１図は要部拡大
断面図、第２図は成形機全体の中央縦断面図、第３図は
第１図のＡ−Ａ線断面図、第４図は内管支持部材の他の
構造例を示す断面図、第５図は第４図のＢ−Ｂ線断面図
である。 １……シリンダバレル、７……スクリュー、11……温度
制御媒体流通内管、12……温度制御媒体流通外管、13,1
4……温度制御媒体給排路、15……移送域断熱層、19…
…支持部材、20……媒体流通部、Ｃ……圧縮域、Ｆ……
移送域、Ｍ……計量域。Drawings show an embodiment of the present invention, FIG. 1 is an enlarged sectional view of a main part, FIG. 2 is a central longitudinal sectional view of the entire molding machine, FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is a sectional view showing another example of the structure of the inner tube supporting member, and FIG. 5 is a sectional view taken along the line BB of FIG. DESCRIPTION OF SYMBOLS 1 ... Cylinder barrel, 7 ... Screw, 11 ... Temperature control medium flow inner pipe, 12 ... Temperature control medium flow outer pipe, 13,1
4 ... Temperature control medium supply / discharge path, 15 ... Transfer area heat insulation layer, 19 ...
... Support member, 20 ... Medium distribution section, C ... Compression area, F ...
Transfer area, M ... Measurement area.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｃ 47/84 Ｂ２９Ｃ 47/84 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 6 Identification code FI B29C 47/84 B29C 47/84
Claims (1)
され、移送域（Ｆ）、圧縮域（Ｃ）及び計量域（Ｍ）か
らなるプラスチック成形機用スクリューにおいて、 スクリュー（７）の中途部には後端から先端近傍に温度
制御媒体給排路（13）（14）が同心状に設けられ、前記
移送域（Ｆ）のスクリュー（７）内には前記媒体給排路
（14）の外周に移送域断熱層（15）が設けられ、 前記温度制御媒体給排路（13）（14）は、スクリュー
（７）の中心に開設された媒体通孔（10）と、該媒体通
孔（10）に間隙を有して挿通された媒体流通管（11）と
によって成形され、該媒体流通管（11）は支持部材（1
9）によって前記媒体流通孔（10）内面に支持され、該
支持部材（19）には、媒体の流れに乱れを与える媒体流
通部（20）が設けられていることを特徴とするプラスチ
ック成形機用スクリュー。1. A screw for a plastic molding machine rotatably fitted in a cylinder barrel (1) and comprising a transfer zone (F), a compression zone (C) and a metering zone (M). In the middle part, the temperature control medium supply / discharge passages (13) and (14) are provided concentrically from the rear end to the vicinity of the front end. A heat insulating layer (15) is provided on the outer periphery of the medium, and the temperature control medium supply / discharge paths (13) and (14) are provided with a medium through hole (10) opened at the center of the screw (7) and the medium. And a medium flow pipe (11) inserted with a gap in the through hole (10), and the medium flow pipe (11) is supported by the support member (1).
A plastic molding machine, which is supported on the inner surface of the medium flow hole (10) by 9), and the support member (19) is provided with a medium flow portion (20) for disturbing the flow of the medium. Screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2090970A JP2778797B2 (en) | 1990-04-05 | 1990-04-05 | Screw for plastic molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2090970A JP2778797B2 (en) | 1990-04-05 | 1990-04-05 | Screw for plastic molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03288613A JPH03288613A (en) | 1991-12-18 |
| JP2778797B2 true JP2778797B2 (en) | 1998-07-23 |
Family
ID=14013361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2090970A Expired - Lifetime JP2778797B2 (en) | 1990-04-05 | 1990-04-05 | Screw for plastic molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778797B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7097345B2 (en) | 2003-05-19 | 2006-08-29 | Kobe Steel, Ltd. | Screw with heat exchange function, mixer and extruder |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008036590A (en) * | 2006-08-09 | 2008-02-21 | Shibaura Mechatronics Corp | Paste applying apparatus and paste applying method |
| DE102019208473A1 (en) * | 2019-06-11 | 2020-12-17 | Henkel Ag & Co. Kgaa | Device for producing a multicomponent mixture and method for operating such a device |
| CN116507467A (en) * | 2021-06-21 | 2023-07-28 | 株式会社山城精机制作所 | Conveying device, screw and external temperature adjusting part for homogenizing materials |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59100514A (en) * | 1982-11-30 | 1984-06-09 | Fujitsu Ltd | Plasma cvd device |
| DE3322968A1 (en) * | 1983-06-25 | 1985-01-10 | Fried. Krupp Gmbh, 4300 Essen | METHOD AND DEVICE FOR PRODUCING FATS AND OILS |
| JPH0828669B2 (en) * | 1985-12-12 | 1996-03-21 | 日本電気株式会社 | High-speed data processing method |
-
1990
- 1990-04-05 JP JP2090970A patent/JP2778797B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7097345B2 (en) | 2003-05-19 | 2006-08-29 | Kobe Steel, Ltd. | Screw with heat exchange function, mixer and extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03288613A (en) | 1991-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4034952A (en) | Hot plastic injection bushing | |
| EP0444455B1 (en) | Injection molding cooled manifold | |
| CN101479092B (en) | Worm extruder comprising a cooling device in the feed zone | |
| JPS632766B2 (en) | ||
| JPS58108117A (en) | Cap for preventing stagnation | |
| JP2778797B2 (en) | Screw for plastic molding machine | |
| JPH09300433A (en) | Screw for extruder | |
| US5200205A (en) | Extruder barrel temperature regulation apparatus | |
| US3401745A (en) | Heat transfer roller having fluid circulating means therein | |
| CN204633513U (en) | The housing of motor, motor and motor vehicle | |
| US4088434A (en) | Die for continuously extruding hollow articles from thermosetting resins | |
| KR20010040602A (en) | Extrusion pump | |
| US20040060258A1 (en) | Rotary-die-method and fill wedge for producing capsules, in particular soft capsules | |
| JP2723331B2 (en) | Plastic molding machine | |
| US6533564B1 (en) | Apparatus for forming adhesive cartridges | |
| CN108859007A (en) | Hot flow path heats mouth structure and the injection mold with it | |
| CN206765303U (en) | A kind of Novel heating barrel | |
| JP3973000B2 (en) | Nozzle for filling cosmetics | |
| CN206718469U (en) | A kind of FDM classes 3D printer double head structure | |
| CN207629175U (en) | A kind of novel pouring gate structure for Ultra-Low Speed die casting | |
| JPH03211028A (en) | Resin injection port of injection molding machine | |
| CN220973281U (en) | Extrusion molding temperature control device | |
| CN210308971U (en) | Heat preservation device of extruder | |
| CN220008780U (en) | A high-efficient material heating device for blowing equipment | |
| JP2812186B2 (en) | Heating cylinder of injection molding machine |