JP2587494B2 - Extruder - Google Patents

Extruder

Info

Publication number
JP2587494B2
JP2587494B2 JP1173995A JP17399589A JP2587494B2 JP 2587494 B2 JP2587494 B2 JP 2587494B2 JP 1173995 A JP1173995 A JP 1173995A JP 17399589 A JP17399589 A JP 17399589A JP 2587494 B2 JP2587494 B2 JP 2587494B2
Authority
JP
Japan
Prior art keywords
extruder
stage extruder
stage
screw
resin
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
Application number
JP1173995A
Other languages
Japanese (ja)
Other versions
JPH0339225A (en
Inventor
吉則 村田
迪 露木
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1173995A priority Critical patent/JP2587494B2/en
Publication of JPH0339225A publication Critical patent/JPH0339225A/en
Application granted granted Critical
Publication of JP2587494B2 publication Critical patent/JP2587494B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/585—Screws provided with gears interacting with the flow
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion 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用押出成形機、溶融紡糸用押出
機等に適用できる押出機に関するものである。Description: TECHNICAL FIELD The present invention relates to an extruder applicable to an extruder for plastics, an extruder for melt spinning, and the like.

（従来の技術） 第２図は従来の押出機を示し、プラスチック固体原料
は、ホッパ６′から供給され、駆動モータ７′により減
速機８′を介して回転しているスクリュ９′の回転によ
って受ける剪断エネルギー及び押出機シリンダ11′の外
部にあるヒータ10′からの加熱により可塑化溶融され、
スクリュ先端部にある均一化混合部14′により均一化を
行っている。均一混合された溶融樹脂は、ダイ４′によ
りシート、フィルムなどの形状に成形され製品５′とし
て押出される。(Prior Art) FIG. 2 shows a conventional extruder, in which a plastic solid material is supplied from a hopper 6 ', and is rotated by a screw 9' rotated by a drive motor 7 'via a speed reducer 8'. Plasticizing and melting due to the shear energy received and heating from a heater 10 ′ outside the extruder cylinder 11 ′,
The homogenization is performed by the homogenization mixing section 14 'at the screw tip. The uniformly mixed molten resin is formed into a sheet, film or the like by a die 4 'and extruded as a product 5'.

（発明が解決しようとする課題） 従来の第２図に示す押出機は、１本のスクリュ９′に
溶融可塑化する部分と、均一化混合機能を有する部分を
設けて押出成形を行っているが、最近の市場の多様化に
対応するため、一系列の押出成形機に各種樹脂の成形を
可能にする必要性が高くなっている。そこで従来は各種
樹脂に対応するために異なった形状のスクリュを２種類
以上持ち、必要に応じスクリュを交換して成形を行って
いた。(Problems to be Solved by the Invention) In the conventional extruder shown in FIG. 2, a single screw 9 'is provided with a portion to be melt-plasticized and a portion having a uniform mixing function to perform extrusion molding. However, in order to respond to the recent diversification of the market, there is an increasing need to be able to mold various kinds of resins in a series of extruders. Therefore, conventionally, two or more types of screws having different shapes have been used in order to cope with various types of resins, and the screws have been exchanged as necessary for molding.

しかし前記第２図の従来のスクリュは、長い１本のス
クリュのため、樹脂に対応してスクリュを交換するに
も、長いスクリュの全部を交換する必要があるため、交
換作業が大変であった。しかもスクリュを交換するため
には生産を停止する必要があるため、生産性を著しく低
下させるという欠点があり、各種樹脂に対応できる汎用
性の高い押出機を開発する必要性があった。However, since the conventional screw shown in FIG. 2 is a single long screw, it is necessary to replace all of the long screws when replacing the screw corresponding to the resin. . Moreover, since it is necessary to stop the production in order to replace the screw, there is a drawback that the productivity is remarkably reduced, and it is necessary to develop a general-purpose extruder that can cope with various resins.

従来も実公昭41−25102号公報において、押出加熱筒
と射出加熱筒を移送通路で連結した射出成形機の予備可
塑化装置が提案されているが、この射出加熱筒は溶融可
塑化を行うことなく射出のみ行うものであり、結局溶融
可塑化均一混合は押出加熱筒によってのみ行っているた
め、やはり前記第２図の場合と同じような不具合があっ
た。Conventionally, Japanese Utility Model Publication No. 41-25102 proposes a pre-plasticizing apparatus for an injection molding machine in which an extrusion heating cylinder and an injection heating cylinder are connected by a transfer passage. In this case, only the injection is performed, and since the melt plasticizing uniform mixing is performed only by the extrusion heating cylinder, the same problem as in the case of FIG.

本発明は第一段押出機と均一化混合機能のみの第二段
押出機を備えることにより、前記の課題を解消しようと
するものである。The present invention is intended to solve the above problem by providing a first-stage extruder and a second-stage extruder having only a homogenizing mixing function.

（課題を解決するための手段） このため本発明は、プラスチック固体原料を可塑化溶
融する第一段押出機と、同押出機と成形用ダイとの中間
に、送り機構を持たず均一化混合機能のみを備えた混練
装置を有する第二段押出機を設け、同第二段押出機から
の溶融樹脂は第一段押出機からの押込み樹脂圧力により
押出されるようにしてなるもので、これを課題解決のた
めの手段とするものである。(Means for Solving the Problems) For this reason, the present invention provides a first-stage extruder for plasticizing and melting a plastic solid raw material, and a uniform mixing without a feed mechanism between the extruder and a molding die. A second-stage extruder having a kneading device having only a function is provided, and the molten resin from the second-stage extruder is extruded by the indented resin pressure from the first-stage extruder. Is a means for solving the problem.

（作用） 押出機の機能を可塑化溶融する部分と、均一化混合部
分に分け、第一段押出機により可塑化溶融すると共に、
同第一段押出機により可塑化溶融されたが十分に均一に
なっていない溶融樹脂を第二段押出機に供給する。第二
段押出機の混練装置は送り能力の全くない均一化混合機
能のみ有する構造とし、送り機能は第一段押出機からの
押込み樹脂圧力により行なう。即ち、第一段押出機から
の供給樹脂圧力の大、小により第二段押出機内の通過時
間を変化させ、また混練装置の回転数を変えることによ
り混合のためのエネルギー量を変え、均一化混合をコン
トロールすることにより、同一押出装置を使用して各種
樹脂に対応できるようにする。(Function) The function of the extruder is divided into a plasticizing and melting part and a homogenizing and mixing part.
The molten resin plasticized and melted by the first-stage extruder but not sufficiently uniform is supplied to the second-stage extruder. The kneading device of the second-stage extruder has a structure having only a homogenizing mixing function without any feeding capability, and the feeding function is performed by the pressure of the indented resin from the first-stage extruder. That is, the passing time in the second-stage extruder is changed according to the magnitude of the resin pressure supplied from the first-stage extruder, and the amount of energy for mixing is changed by changing the number of revolutions of the kneading device, thereby making the mixing uniform. By controlling the mixing, the same extruder can be used to cope with various resins.

（実施例） 以下本発明を図面の実施例について説明すると、第１
図は本発明の実施例を示し、プラスチック固体原料はホ
ッパ６からスクリュ９を有する第一段押出機１に供給さ
れるようになっている。スクリュ９と押出機シリンダ11
の内面間の空間は、徐々にホッパ６部から縮小された後
一定となるようになっており、同スクリュ９には駆動モ
ータ７により減速機８を介して回転が伝達される。従っ
てホッパ６より供給されたプラスチック固体原料は、第
一段押出機１によって可塑化溶融されると共に、下流に
至るに従って加圧され、接続管３より第二段押出機２を
介してダイ４に対する押込み圧力が発生する。10はシリ
ンダ11の外部にあるヒータである。なお、第一段押出機
は、可塑化溶融機能を押込み圧力の発生機能を有するも
のであれば、第１図の構造のスクリュのみに限定される
ものではない。(Embodiments) The present invention will be described below with reference to the embodiments in the drawings.
The figure shows an embodiment of the present invention, in which a plastic solid raw material is supplied from a hopper 6 to a first-stage extruder 1 having a screw 9. Screw 9 and extruder cylinder 11
The space between the inner surfaces is gradually reduced from the hopper 6 and then becomes constant. The rotation of the screw 9 is transmitted to the screw 9 by the drive motor 7 via the speed reducer 8. Accordingly, the plastic solid raw material supplied from the hopper 6 is plasticized and melted by the first-stage extruder 1, and is also pressurized as it reaches the downstream, and is applied to the die 4 from the connection pipe 3 through the second-stage extruder 2. Indentation pressure is generated. Reference numeral 10 denotes a heater provided outside the cylinder 11. The first-stage extruder is not limited to the screw having the structure shown in FIG. 1 as long as it has a function of generating a pressure by injecting a plasticizing and melting function.

第二段押出機２は、第一段押出機１とダイ４との中間
に配設されると共に、送り機能を持たず、均一化混合機
能のみを有する混合装置14がシリンダ15内に挿入されて
おり、同混合装置は駆動モータ12により減速機13を介し
て回転駆動される。16はシリンダ15の外部にあるヒー
タ、５はダイ４より押出される製品である。The second-stage extruder 2 is disposed between the first-stage extruder 1 and the die 4, and a mixing device 14 having only a uniform mixing function without a feeding function is inserted into a cylinder 15. The mixing device is rotationally driven by a drive motor 12 via a speed reducer 13. 16 is a heater outside the cylinder 15 and 5 is a product extruded from the die 4.

また第二段押出機２内での均一化混合度合のコントロ
ールは、第二段押出機２内の混練装置14の回転数と、第
二段押出機２内での滞留時間（第二段押出機２への押込
み樹脂圧力P2を変化させてコントロール）の変化により
行なう。なお、混練装置14は図面の如きダルメージ構造
以外に、他の混練構造を採用してもよい。The degree of homogenization and mixing in the second-stage extruder 2 is controlled by the number of rotations of the kneading device 14 in the second-stage extruder 2 and the residence time in the second-stage extruder 2 (second-stage extrusion). The control is performed by changing the pressure P 2 of the resin to be pressed into the machine 2. The kneading device 14 may employ another kneading structure other than the dalmage structure as shown in the drawing.

次に作用を説明すると、プラスチック固体原料は第一
段押出機ホッパ６から第一段押出機１のスクリュ９部に
供給される。スクリュ９は駆動モータ７により減速機８
を介して回転駆動され、供給されたプラスチック固体原
料は、スクリュ９の回転により受ける剪断エネルギー及
び押出機シリンダ11の外部にあるヒータ10からの加熱に
より可塑化溶融されて、第二段押出機２に供給される。Next, the operation will be described. The plastic solid raw material is supplied from the first-stage extruder hopper 6 to the screw 9 of the first-stage extruder 1. Screw 9 is driven by drive motor 7 to reducer 8
The plastic solid raw material supplied is rotationally driven and supplied, and is plasticized and melted by the shear energy received by the rotation of the screw 9 and the heating from the heater 10 outside the extruder cylinder 11, so that the second-stage extruder 2 Supplied to

第二段押出機２に供給された十分に均一化混合されて
いない溶融樹脂は、駆動モータ12により減速機13を介し
て回転しているが、送り能力のない混練装置14に供給さ
れる。この十分に均一化混合されていない供給された溶
融樹脂は、混練装置14により均一に混合されると共に、
第一段押出機１からの押込み樹脂圧力P2によりダイ４に
向かって押出され、ダイ４からはシート、フィルムなど
の形状に成形された製品５として押出される。The molten resin that has not been sufficiently homogenized and mixed and supplied to the second-stage extruder 2 is supplied to the kneading device 14 which is rotated by the drive motor 12 via the speed reducer 13 but has no feed capability. The supplied molten resin that has not been sufficiently homogenized and mixed is uniformly mixed by the kneading device 14,
It is extruded toward the die 4 by the indentation resin pressure P 2 from the first stage extruder 1, and is extruded from the die 4 as a product 5 formed into a shape such as a sheet or a film.

（発明の効果） 以上詳細に説明した如く本発明は、押出機の重要な１
機能である均一化混合機能だけを他の機能と分離独立さ
せて第二段押出機に持たせることにより、溶融樹脂の均
一化度合が容易にコントロールできるようになり、巾広
い異なった樹脂に対応できる汎用性の高い押出機とする
ことができる。また本発明によれば、樹脂に加えられる
エネルギー量が必要最小限に抑えられるため、押出機内
の樹脂温度が低くなり、樹脂の劣化を防止することがで
き、更に省エネルギーの効果もある。(Effects of the Invention) As described in detail above, the present invention provides an important extruder.
The homogenization mixing function, which is the only function, is separated and independent from other functions and provided to the second-stage extruder, so that the degree of homogenization of the molten resin can be easily controlled, and it is compatible with a wide range of different resins A highly versatile extruder that can be used. Further, according to the present invention, since the amount of energy applied to the resin is minimized, the temperature of the resin in the extruder is lowered, the deterioration of the resin can be prevented, and there is also an effect of energy saving.

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

第１図は本発明の実施例を示す押出機の断面と樹脂圧力
を示す説明図、第２図は従来の押出機の側断面図であ
る。 図の主要部分の説明 １…第一段押出機、２…第二段押出機 ３…接続管、４…ダイ ５…製品、６…ホッパ ７…駆動モータ、９…スクリュ 10…ヒータ、11…押出機シリンダ 12…駆動モータ、14…混練装置 15…シリンダ、16…ヒータFIG. 1 is an explanatory view showing a section of an extruder and a resin pressure showing an embodiment of the present invention, and FIG. 2 is a side sectional view of a conventional extruder. Description of main parts in the drawing 1... First-stage extruder, 2... Second-stage extruder 3... Connection pipe, 4... Die 5... Product 6... Hopper 7. Extruder cylinder 12 ... Drive motor, 14 ... Kneading device 15 ... Cylinder, 16 ... Heater

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】プラスチック固体原料を可塑化溶融する第
一段押出機と、同押出機と成形用ダイとの中間に、送り
機能を持たず均一化混合機能のみを備えた混練装置を有
する第二段押出機を設け、同第二段押出機からの溶融樹
脂は第一段押出機からの押込み樹脂圧力により押出され
るようにしてなることを特徴とする押出機。1. A first stage extruder for plasticizing and melting a plastic solid raw material, and a kneading device having only a homogenizing mixing function without a feeding function between the extruder and a molding die. An extruder comprising a two-stage extruder, wherein the molten resin from the second-stage extruder is extruded by the pressure of the indented resin from the first-stage extruder.
JP1173995A 1989-07-07 1989-07-07 Extruder Expired - Lifetime JP2587494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1173995A JP2587494B2 (en) 1989-07-07 1989-07-07 Extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1173995A JP2587494B2 (en) 1989-07-07 1989-07-07 Extruder

Publications (2)

Publication Number Publication Date
JPH0339225A JPH0339225A (en) 1991-02-20
JP2587494B2 true JP2587494B2 (en) 1997-03-05

Family

ID=15970809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1173995A Expired - Lifetime JP2587494B2 (en) 1989-07-07 1989-07-07 Extruder

Country Status (1)

Country Link
JP (1) JP2587494B2 (en)

Also Published As

Publication number Publication date
JPH0339225A (en) 1991-02-20

Similar Documents

Publication Publication Date Title
US5773042A (en) Injection molding unit for long fiber-reinforced thermoplastic resin
US4006209A (en) Method for additive feeding
US4994220A (en) Process for injection molding of injection molded parts of plasticized liquid crystal polymer material
US3817675A (en) Apparatus for dispensing colorant in plasticized thermoplastic material
US10315347B2 (en) Injection molding apparatus with spherical rotor
US6071462A (en) Compounding injection molding combined process
US3605188A (en) Plastic mixer and extruder
US7004743B2 (en) Installation for the treatment and further processing of thermoplastics and method for the operation thereof
JPS6241454B2 (en)
JPH05124086A (en) Device for extruding blended rubber material and rubber-like material
JP4478622B2 (en) Extrusion equipment for mixed resin waste
US20050063246A1 (en) Mixing and kneading device for polymer compositions
JPH0752185A (en) Molding method and device of long-fiber composite material
JP2786243B2 (en) Injection plasticizer for injection molding machine
JP2587494B2 (en) Extruder
US20030211197A1 (en) Method of making formed bodies containing active ingredients
CN105904699A (en) Outer thread groove type screw extruding device with vibration spindle
CN214188363U (en) Extrusion die head with quick adjusting mechanism
JPH0538738A (en) Molding machine, plasticization part of which is separated
CN201538026U (en) Extruding device for product with odd-shaped cross section
US20030021860A1 (en) Twin screw compounding/injection molding apparatus and process
CN214687844U (en) Extrusion motor magnetic ring production facility
JPH06218781A (en) Screw for injection molding
JPH0230510A (en) Plasticizing machine
JPH0459220A (en) High speed extrusion method for thermoplastic resin