JPH0688308B2 - Extruder screen - Google Patents

Extruder screen

Info

Publication number
JPH0688308B2
JPH0688308B2 JP62038328A JP3832887A JPH0688308B2 JP H0688308 B2 JPH0688308 B2 JP H0688308B2 JP 62038328 A JP62038328 A JP 62038328A JP 3832887 A JP3832887 A JP 3832887A JP H0688308 B2 JPH0688308 B2 JP H0688308B2
Authority
JP
Japan
Prior art keywords
screw
heat
heat pipe
hollow hole
rear end
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
Application number
JP62038328A
Other languages
Japanese (ja)
Other versions
JPS63203313A (en
Inventor
功 大谷
因 花川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP62038328A priority Critical patent/JPH0688308B2/en
Publication of JPS63203313A publication Critical patent/JPS63203313A/en
Publication of JPH0688308B2 publication Critical patent/JPH0688308B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B29C48/78—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
    • B29C48/36—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
    • B29C48/84—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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
    • 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
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/9239—Screw or gear
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は押出成形機のスクリューに関し、詳しは塩化ビ
ニル樹脂等の如く押出時にシリンダーとスクリューとの
間の剪断による発熱が大きく、且つ熱による樹脂焼けの
発生し易い樹脂の押出に好適なヒートパイプによる冷却
機能を有した押出成形機のスクリューを提供するもので
ある。Description: TECHNICAL FIELD The present invention relates to a screw for an extruder, and more specifically, it generates a large amount of heat due to shear between a cylinder and a screw during extrusion, such as vinyl chloride resin, and the like. (EN) A screw of an extrusion molding machine having a cooling function by a heat pipe suitable for extruding a resin in which resin burning is likely to occur.

〔従来の技術〕[Conventional technology]

従来このような樹脂の押出機のスクリューとしては、特
公昭56-16742号に示されたように、押出成形機の押出ス
クリューであって、スクリューの軸芯にスクリュー後端
部まで貫通穿設された中空孔と、この中空孔の先端部内
周面に密着固定された中空管状ヒートパイプと、この中
空管状ヒートパイプを除いた前記中空孔後端部までの中
空孔内周面に形成された熱絶縁被覆層と、前記熱絶縁被
覆層を有する中空孔及び中空管状ヒートパイプの中空部
に着脱自在に挿入嵌合されるヒートパイプと、このヒー
トパイプの一端を前記スクリューの後端部から露出さ
せ、その露出部の一部に装着されたヒートパイプの温度
を制御する温度制御装置とが設けられたものが知られて
いる。Conventionally, as a screw of such an extruder of a resin, as shown in Japanese Patent Publication No. 56-16742, it is an extrusion screw of an extrusion molding machine, and is formed by penetrating the screw shaft core to the screw rear end. Hollow hole, a hollow tubular heat pipe tightly fixed to the inner peripheral surface of the distal end of the hollow hole, and heat formed on the inner peripheral surface of the hollow hole up to the rear end of the hollow hole excluding the hollow tubular heat pipe. An insulating coating layer, a heat pipe that is detachably inserted and fitted into the hollow portion of the heat insulating coating layer and the hollow portion of the hollow tubular heat pipe, and one end of this heat pipe is exposed from the rear end portion of the screw. It is known that a temperature control device for controlling the temperature of a heat pipe attached to a part of the exposed portion is provided.

〔解決しようとする問題点〕[Problems to be solved]

しかしながら、上記押出成形機のスクリューは、種々の
樹脂の押出に対応するためにスクリューからの加熱冷却
が可能な温度制御装置が設けてあり、このために高価な
装置となり、塩化ビニル樹脂等の汎用樹脂の押出には性
能が優れているとしてもコスト的に高く使用できるもの
ではなく、更にこの装置の保守点検が必要となり、且つ
保守点検には高度の技術を要するものである。However, the screw of the extrusion molding machine is provided with a temperature control device capable of heating and cooling from the screw in order to cope with extrusion of various resins, and therefore becomes an expensive device, and is widely used for vinyl chloride resin and the like. Even if the resin has excellent performance, it cannot be used at a high cost even if it has excellent performance. Further, the maintenance and inspection of this device is required, and the maintenance and inspection requires a high technique.

又、冷却する場合にスクリュー先端部の熱を外部に放出
するものであるから、熱エネルギーを無駄にすると言う
問題もある。Further, when cooling, the heat of the tip of the screw is released to the outside, so there is also the problem of wasting heat energy.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は上記従来の押出成形機のスクリューの欠点を解
消せんとして、冷却機能のみを有したものであって、そ
の要旨は、スクリュー部と駆動部とからなるスクリュー
本体において、該スクリュー本体の軸芯に、スクリュー
本体の先端部付近から後端部に至る中空孔が設けられ、
該中空孔におけるスクリュー部の両端部内周面に熱伝導
層が各々形成され、中空孔におけるスクリュー部の略中
央部内周面に熱絶縁層が形成されており、前記中空孔に
前記スクリュー部の長さよりやゝ短い長さのヒートパイ
プが挿入され、該ヒートパイプを前記スクリュー本体の
軸方向に移動せしめる操作機構がスクリュー本体後端部
に設けられ、且つ該後端部より操作可能とされてなるこ
とを特徴とする出成形機のスクリューに存する。The present invention is to eliminate the drawbacks of the screw of the conventional extruder, and has only a cooling function, the gist thereof is a screw main body including a screw part and a drive part, and a shaft of the screw main body. The core is provided with a hollow hole from the vicinity of the front end of the screw body to the rear end,
Heat conduction layers are formed on the inner peripheral surfaces of both ends of the screw part in the hollow hole, and a heat insulating layer is formed on the inner peripheral surface of the central part of the screw part in the hollow hole, and the length of the screw part is increased in the hollow hole. A heat pipe having a length slightly shorter than that of the screw body is inserted, and an operation mechanism for moving the heat pipe in the axial direction of the screw body is provided at the rear end portion of the screw body, and can be operated from the rear end portion. The present invention resides in the screw of the molding machine.

〔作用〕[Action]

スクリュー本体の先端部のが熱がヒートパイプにより吸
熱されて冷却され、該熱がヒートパイプを通じてスクリ
ュー本体後端部側に輸送され、その熱がスクリュー本体
後端部側に存在する樹脂を加熱する。The heat at the tip of the screw body is absorbed by the heat pipe and cooled, the heat is transported to the rear end side of the screw body through the heat pipe, and the heat heats the resin existing at the rear end side of the screw body. .

又、ヒートパイプをスクリュー本体の軸方向に移動させ
ることによりスクリュー本体先端部の熱のスクリュー本
体後端部側に輸送する割合が変えられる。Further, by moving the heat pipe in the axial direction of the screw main body, the ratio of the heat of the front end of the screw main body transported to the rear end of the screw main body can be changed.

〔実施例〕〔Example〕

次に本発明押出成形機のスクリューの実施例を図面に基
づいて説明する。Next, an example of the screw of the extruder of the present invention will be described with reference to the drawings.

第１図は本発明押出成形機のスクリューの一例を示す断
面図であり、第２図は同じく右側面図である。FIG. 1 is a sectional view showing an example of a screw of the extruder of the present invention, and FIG. 2 is a right side view of the same.

これらの図において、１はスクリュー本体であって、ス
クリュー部11と駆動部16とから構成されている。In these figures, 1 is a screw body, which is composed of a screw portion 11 and a drive portion 16.

スクリュー部11は、樹脂を溶融加圧する部分であり、先
端部から12は計量・熔融部、13は圧縮部、14は予熱部、
15は材料供給部とされている。The screw part 11 is a part for melting and pressurizing the resin, 12 from the tip part is a measuring / melting part, 13 is a compression part, 14 is a preheating part,
15 is a material supply section.

駆動部16はスクリュー本体１を回転させるための動力の
伝達部分であり、ギヤー等を介してモーター等と連結さ
れる。（図示せず） スクリュー本体１の軸芯には、該スクリュー本体１の先
端部である計量・熔融部12の端部付近から後端部である
駆動部13の側端部に至る略全長に中空孔２が設けられ、
該中空孔２は駆動部16の側端部に開口されている。The drive portion 16 is a power transmission portion for rotating the screw body 1, and is connected to a motor or the like via a gear or the like. (Not shown) The axis of the screw body 1 has a substantially total length from the vicinity of the end portion of the measuring / melting portion 12 which is the tip portion of the screw body 1 to the side end portion of the driving portion 13 which is the rear end portion. A hollow hole 2 is provided,
The hollow hole 2 is opened at the side end of the drive unit 16.

スクリュー部11の外周面にスクリュー17,17…が設けら
れており、該スクリュー17,17…は前記スクリュー部11
の計量・熔融部12、圧縮部13、予熱部14及び材料供給部
15の各々の機能に対応した溝の深さ及び溝間隔に形成さ
れている。Screws 17, 17 ... Are provided on the outer peripheral surface of the screw portion 11, and the screws 17, 17 ...
Measuring / melting unit 12, compression unit 13, preheating unit 14, and material supply unit
The groove depth and groove interval corresponding to each of the 15 functions are formed.

前記スクリュー部11における中空孔２の両端部である計
量・熔融部12及び予熱部14に略対応した内周面に熱伝導
層21,21が各々設けられ、同じく略中央部である圧縮部1
3に略対応した内周面に熱絶縁層22が設けられている。The heat conducting layers 21 and 21 are respectively provided on the inner peripheral surfaces of the screw portion 11 at both ends of the hollow hole 2 corresponding to the measuring / melting portion 12 and the preheating portion 14, and the compression portion 1 which is also a substantially central portion.
A heat insulating layer 22 is provided on the inner peripheral surface substantially corresponding to 3.

熱伝導層21,21は熱伝導性の良い銅、アルミニュウム等
よりなる筒状体が嵌入されて形成されている。The heat conduction layers 21 and 21 are formed by inserting a tubular body made of copper, aluminum, or the like having good heat conductivity.

熱絶縁層22は熱絶縁性が良く、且つ耐熱性の高いテフロ
ン等の合成樹脂よりなる複数個の熱絶縁部材23,23…が
軸方向に適宜間隔をおいて周方向に沿って設けられ、該
複数個の熱絶縁部材23,23…同士の間隙部が空気層24,24
…とされている。The heat insulating layer 22 has a plurality of heat insulating members 23, 23 ... Which are made of synthetic resin such as Teflon having a high heat insulating property and a high heat resistance, and are provided along the circumferential direction at appropriate intervals in the axial direction, Air gaps 24, 24 are formed between the plurality of heat insulating members 23, 23 ...
It is said that ...

３はヒートパイプであって、前記スクリュー本体１の中
空孔２に挿入されており、その長さは前記スクリュー部
11の寸法よりも所定寸法だけ短くされている。A heat pipe 3 is inserted into the hollow hole 2 of the screw body 1, and its length is the screw portion.
It is shorter than the size of 11 by a predetermined size.

本実施例では一端部が該中空孔２の先端部に当接したと
きに他端部が略予熱部14と材料供給部15との境界付近に
位置する長さ、即ち略材料供給部15の長さと略同じ寸法
だけスクリュー部11の寸法より短くされている。In this embodiment, when one end of the hollow hole 2 is in contact with the tip of the hollow hole 2, the other end of the hollow hole 2 is located near the boundary between the preheating section 14 and the material supplying section 15, that is, the length of the material supplying section 15. It is shorter than the dimension of the screw portion 11 by a dimension substantially the same as the length.

該ヒートパイプ３の一端部（計量・熔融部12側）が吸熱
部31とされ、他端部（予備加熱部14側）が放熱部32とさ
れている。One end of the heat pipe 3 (on the side of the measuring / melting unit 12) is a heat absorbing unit 31, and the other end (on the side of the preheating unit 14) is a heat radiating unit 32.

ヒートパイプ３の外径は熱伝導層21及び熱絶縁層22の内
径に密着することのできる外径とされていることが望ま
しい。It is desirable that the outer diameter of the heat pipe 3 be such that it can be brought into close contact with the inner diameters of the heat conducting layer 21 and the heat insulating layer 22.

４はヒートパイプ３をスクリュー本体１の軸方向に移動
させるための操作機構であって、操作杆41と操作部材43
とから構成されている。Reference numeral 4 denotes an operating mechanism for moving the heat pipe 3 in the axial direction of the screw body 1, which includes an operating rod 41 and an operating member 43.
It consists of and.

操作杆41は丸棒よりなり、該操作杆41の一端部がヒート
パイプ３の一端部に取着され、他端部がスクリュー本体
１の軸方向に向けて突設されており、該操作杆41の略全
外周面に雄ネジ部42が設けられている。The operating rod 41 is made of a round bar, one end of the operating rod 41 is attached to one end of the heat pipe 3, and the other end of the operating rod 41 is projected in the axial direction of the screw body 1. A male screw portion 42 is provided on substantially the entire outer peripheral surface of 41.

操作部材43は、筒部44の一端部に開口し、該一端部から
略全長に亙って前記操作杆41の雄ネジ部42が螺合し得る
雌ネジ部45が設けられ、他方の端部の外周部に筒部44と
略同心状に外方に突出されてフランジ部46が設けられ、
該フランジ部46の外側方に横断面四角形の操作部47が突
設されている。The operating member 43 is provided with a female screw portion 45 which is opened at one end of the tubular portion 44 and which can be screwed into the male screw portion 42 of the operating rod 41 over the substantially entire length from the one end. A flange portion 46 is provided on the outer peripheral portion of the portion so as to project outward substantially coaxially with the tubular portion 44,
On the outer side of the flange portion 46, an operating portion 47 having a quadrangular cross section is provided so as to project.

５は固定部材であって、固定部材５は、中央部に凹部51
が設けられ、該凹部51は前記操作部材43のフランジ部46
より僅か大とされ該フランジ部46が周方向に回動可能な
寸法とされ、更に該凹部51の底部に前記操作部47が同じ
く周方向に回動可能な貫通孔52が設けられ、周部には固
定ネジ53,53…が挿通可能な小孔（図示せず）が複数個
設けられている。5 is a fixing member, and the fixing member 5 has a concave portion 51 at the center.
Is provided, and the concave portion 51 is the flange portion 46 of the operating member 43.
The flange portion 46 is made slightly larger so that the flange portion 46 is rotatable in the circumferential direction, and the operation portion 47 is also provided with a through hole 52 in the bottom portion of the recess 51, which is also rotatable in the circumferential direction. Are provided with a plurality of small holes (not shown) through which the fixing screws 53, 53 ... Can be inserted.

前記操作部材43は、筒部44が前記スクリュー本体１の後
端部から中空部２に該筒部44の雌ネジ部45に前記操作杆
41の雄ネジ部42の先端部が僅か螺合されて挿通され、フ
ランジ部46が固定部材５の凹部51に没入され、且つ操作
部47が貫通孔52に貫通され、固定ネジ53,53…によっ
て、スクリュー本体１の後端部側面に回動可能に固定さ
れている。In the operating member 43, the tubular portion 44 is provided in the hollow portion 2 from the rear end portion of the screw body 1 to the female screw portion 45 of the tubular portion 44 and the operating rod.
The distal end portion of the male screw portion 42 of 41 is slightly screwed and inserted, the flange portion 46 is inserted into the concave portion 51 of the fixing member 5, the operating portion 47 is penetrated into the through hole 52, and the fixing screws 53, 53 ... Is rotatably fixed to the rear end side surface of the screw body 1.

第３図は、熱絶縁層22の他の例を示したものであり、棒
状の複数個の熱絶縁部材23,23…が周方向に適宜間隔を
おいて軸方向に添って設けられ、熱絶縁部材23,23…同
士の間隙が空気層24,24…とされたものである。FIG. 3 shows another example of the heat insulating layer 22, in which a plurality of rod-shaped heat insulating members 23, 23 ... Are provided along the axial direction at appropriate intervals in the circumferential direction. The spaces between the insulating members 23, 23 ... Are air layers 24, 24.

このように熱絶縁層22は本実施例及び第３図に示した構
成にこだわるものではなく、例えばテフロンの筒を嵌入
したものであってもよい、要するにヒートパイプの吸熱
部31と放熱部32との間を熱絶縁することが可能な構成で
あればよい。As described above, the heat insulating layer 22 is not limited to the structure shown in this embodiment and FIG. 3, but may be a Teflon tube fitted therein. In short, the heat absorbing portion 31 and the heat radiating portion 32 of the heat pipe. Any structure may be used as long as it can be thermally insulated.

又、本実施例では、熱伝導層21,21を計量・熔融部12と
予熱部14に、熱絶縁層22を圧縮部13に各々略対応した位
置に設けたが、これにこだわるものでなく、冷却したい
部分と加熱したい部分とに熱伝導層21を設けその間に熱
絶縁層22を設ければ良いのである。Further, in the present embodiment, the heat conducting layers 21 and 21 are provided at positions substantially corresponding to the measuring / melting portion 12 and the preheating portion 14, and the heat insulating layer 22 is provided at a position substantially corresponding to the compression portion 13, respectively, but not limited to this. It suffices to provide the heat conduction layer 21 between the portion to be cooled and the portion to be heated and to provide the heat insulating layer 22 between them.

ヒートパイプ３の長さは、スクリュー部11の計量・熔融
部12にスクリューの回転より発生した余分の熱をヒート
パイプ３によって吸熱し、その熱を予熱部14に輸送し放
熱して予熱部14に存在する樹脂を加熱するものであるこ
とから、目的とする最大吸熱カロリーを100％とし、低
減範囲を何％迄にするかを決めれば演算により算出でき
るものである。The length of the heat pipe 3 is such that excess heat generated by rotation of the screw in the metering / melting part 12 of the screw part 11 is absorbed by the heat pipe 3, and the heat is transferred to the preheating part 14 to be radiated and preheated by the preheating part 14. Since the resin existing in is heated, it can be calculated by calculation if the target maximum endothermic calorie is set to 100% and the reduction range is determined.

例えば、100％〜０％の範囲とした場合、ヒートパイプ
３が熱伝導層21より離れる寸法、即ちスクリュー部11の
寸法より熱伝導層21と略同じ寸法短くしてあれば良い。For example, in the range of 100% to 0%, the heat pipe 3 may be separated from the heat conduction layer 21, that is, the dimension of the screw portion 11 may be substantially the same as that of the heat conduction layer 21.

本発明は上記の如く構成されているので、スクリュー本
体１の後端部に設けられた操作機構４の操作部47を回動
することによりヒートパイプ３をスクリュー本体１の軸
方向に移動することとなり、ヒートパイプ３の吸熱部31
と熱伝導層21との接触面積が変えられ、スクリュー部11
の計量・熔融部12の熱を吸熱する割合をかえることので
きるものである。Since the present invention is configured as described above, the heat pipe 3 can be moved in the axial direction of the screw body 1 by rotating the operation portion 47 of the operation mechanism 4 provided at the rear end of the screw body 1. And the heat absorption part 31 of the heat pipe 3
The contact area between the heat conducting layer 21 and
It is possible to change the rate at which the heat of the measuring / melting section 12 is absorbed.

樹脂の種類、押出量（スクリューの回転数）により、ヒ
ートパイプ３の位置を設定しておけば、計量・熔融部12
の熱を吸熱部31を通じて吸熱して予熱部14にて放熱部32
を通じて放熱されるので、計量・熔融部12が冷却され、
該計量・熔融部12の温度が上昇し過熱することなく常に
最適条件に保つことができるものである。If the position of the heat pipe 3 is set according to the type of resin and the amount of extrusion (rotational speed of the screw), the measuring / melting unit 12
The heat of the heat is absorbed through the heat absorbing part 31 and the heat is absorbed by the preheating part 14
Since the heat is radiated through, the measuring / melting unit 12 is cooled,
The temperature of the measuring / melting section 12 does not rise and is not overheated, so that the optimum conditions can be always maintained.

〔効果〕〔effect〕

本発明押出機のスクリューは上記の如く構成され、スク
リュー部内に設けられたヒートパイプに温度制御装置を
有しないので、コストも安く、且つ可動部分が無いので
故障することが無く保守点検の必要がないものである。Since the screw of the extruder of the present invention is configured as described above and does not have a temperature control device in the heat pipe provided in the screw part, the cost is low, and since there is no moving part, there is no failure and maintenance inspection is required. There is no such thing.

又、スクリュー本体の駆動部の側端部に突出した操作部
を回動するだけでヒートパイプを移動することができ
る。計量・熔融部の熱を吸熱する割合が変えられるの
で、樹脂の種類、押出量を変える場合においても簡単に
行うことができ、計量・熔融部の温度を常に最適条件に
保つことができるものである。Further, the heat pipe can be moved only by rotating the operation portion projecting to the side end portion of the drive portion of the screw body. Since the rate of absorbing the heat of the measuring / melting part can be changed, it can be easily performed even when changing the type of resin and the extrusion amount, and the temperature of the measuring / melting part can always be kept at optimum conditions. is there.

更に計量・熔融部の熱を予熱部にて放熱して予熱部に存
在する樹脂をその熱で加熱するので熱エネルギーを無駄
にすることが無く経済的である。Further, the heat of the measuring / melting part is radiated by the preheating part and the resin existing in the preheating part is heated by the heat, so that heat energy is not wasted and it is economical.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明押出機のスクリューの一実施例を示す断
面図、第２図は第１図の右側面図、第３図は第１図のイ
−イ矢視に於ける熱絶縁層の他の例を示す断面図であ
る。 符号の説明 １……スクリュー本体、11……スクリー部、12……計量
・熔融部、13……圧縮部、14……予熱部、15……材料供
給部、16……駆動部、２……中空孔、21……熱伝導層、
22……熱絶縁層、３……ヒートパイプ、４……操作機構FIG. 1 is a sectional view showing an embodiment of the screw of the extruder of the present invention, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a heat insulating layer as viewed in the direction of arrow a in FIG. It is sectional drawing which shows the other example. Explanation of reference numerals 1 ... Screw body, 11 ... Screw section, 12 ... Measuring / melting section, 13 ... Compressing section, 14 ... Preheating section, 15 ... Material supply section, 16 ... Driving section, 2 ... … Hollow hole, 21… Heat conduction layer,
22 ... Heat insulation layer, 3 ... Heat pipe, 4 ... Operating mechanism

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】スクリュー部と駆動部とからなるスクリュ
ー本体において、該スクリュー本体の軸芯に、スクリュ
ー本体の先端部付近から後端部に至る中空孔が設けら
れ、該中空孔におけるスクリュー部の両端部内周面に熱
伝導層が各々形成され、中空孔におけるスクリュー部の
略中央部内周面に熱絶縁層が形成されており、前記中空
孔に前記スクリュー部の長さよりやゝ短い長さのヒート
パイプが挿入され、該ヒートパイプを前記スクリュー本
体の軸方向に移動せしめる操作機構がスクリュー本体の
後端部に設けられ、且つ該後端部より操作可能とされて
なることを特徴とする押出成形機のスクリュー。1. A screw main body comprising a screw part and a drive part, wherein a hollow hole extending from the vicinity of the front end to the rear end of the screw main body is provided in the shaft core of the screw main body, and the hollow part of the screw part in the hollow hole is provided. A heat conductive layer is formed on each of the inner peripheral surfaces of both ends, and a heat insulating layer is formed on the inner peripheral surface of the central portion of the screw portion in the hollow hole, and the hollow hole has a length slightly shorter than the length of the screw portion. An extrusion characterized in that a heat pipe is inserted, and an operating mechanism for moving the heat pipe in the axial direction of the screw body is provided at the rear end portion of the screw body and is operable from the rear end portion. Molding machine screw.
JP62038328A 1987-02-20 1987-02-20 Extruder screen Expired - Fee Related JPH0688308B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62038328A JPH0688308B2 (en) 1987-02-20 1987-02-20 Extruder screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62038328A JPH0688308B2 (en) 1987-02-20 1987-02-20 Extruder screen

Publications (2)

Publication Number Publication Date
JPS63203313A JPS63203313A (en) 1988-08-23
JPH0688308B2 true JPH0688308B2 (en) 1994-11-09

Family

ID=12522215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62038328A Expired - Fee Related JPH0688308B2 (en) 1987-02-20 1987-02-20 Extruder screen

Country Status (1)

Country Link
JP (1) JPH0688308B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317736A (en) * 1988-06-17 1989-12-22 Toshiba Mach Co Ltd Screw for plastic molding machine
CA2900251C (en) * 2015-08-12 2018-05-22 Omachron Intellectual Property Inc. Extruder
US11472065B2 (en) 2015-08-12 2022-10-18 Omachron Intellectual Property Inc. Plastic parts made from plastics having different melting points and a method of manufacturing same
US11279072B2 (en) 2019-03-27 2022-03-22 Omachron Intellectual Property Inc. Extruder with feed block for promoting increased mass transport rate
US11161275B2 (en) 2019-03-27 2021-11-02 Omachron Intellectual Property Inc. Modular extruder
CA3079153C (en) 2019-06-25 2022-08-02 Omachron Intellectual Property Inc. Puller apparatus with movable mounting arm

Also Published As

Publication number Publication date
JPS63203313A (en) 1988-08-23

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