JPS58208028A - Molding machine - Google Patents

Molding machine

Info

Publication number
JPS58208028A
JPS58208028A JP57091027A JP9102782A JPS58208028A JP S58208028 A JPS58208028 A JP S58208028A JP 57091027 A JP57091027 A JP 57091027A JP 9102782 A JP9102782 A JP 9102782A JP S58208028 A JPS58208028 A JP S58208028A
Authority
JP
Japan
Prior art keywords
screw
speed
resin
plasticization
failure
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.)
Granted
Application number
JP57091027A
Other languages
Japanese (ja)
Other versions
JPS6334805B2 (en
Inventor
Katsuyoshi Shimodaira
下平　勝義
Masayoshi Kasai
笠井　昌義
Ryoji Mori
毛利　良治
Kesanobu Kudo
工藤　今朝信
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 JP57091027A priority Critical patent/JPS58208028A/en
Publication of JPS58208028A publication Critical patent/JPS58208028A/en
Publication of JPS6334805B2 publication Critical patent/JPS6334805B2/ja
Granted 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
    • 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
    • B29C45/76—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
    • 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
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • 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
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92085—Velocity
    • 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
    • B29C2948/92085—Velocity
    • B29C2948/92095—Angular velocity
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • 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
    • B29C2948/9258—Velocity
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent the failure of molding by automatically controlling the plasticization condition of resins by a method in which a preset pattern or speed of plasticization is compared with actual plasticization condition detected by a sensor and adjusted by a keyed sleeve device. CONSTITUTION:A raw material resin is supplied to a screw cylinder 2 through a keyed sleeve device from a hopper 4, plasticized and melted by a screw 3, and fed forwards. In this case, the speed of the screw 3 retracting as the rotation proceeds is detected by a speed sensor 9 and compared with a preset retraction speed of the screw 3 by a comparator 10. Then, the key 11a of the keyed sleeve device is radially moved in and out inside the groove of the screw cylinder 2 by means of a solenoid valve 12a and an oil-pressure cylinder 13a on the basis of the output from the comparator 10, and thereby the biting action of resin is regulated. Thus, failure of molding, such as silver streak failure, color dispersion failure, short shot, etc., can be prevented.

Description

【発明の詳細な説明】 本発明は射出成形機、押出成形機等に応用できる成形機
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molding machine that can be applied to an injection molding machine, an extrusion molding machine, and the like.

第１図は従来の射出成形機の可塑化装置の略図例であり
、バンドヒータ（１）で加熱されたスクリュシリンダ（
２）とスクリュ（３）により、ホラ／−：　（４’）か
らの原料樹脂（Ａ）が、スクリュ（３）のネジにより送
られ、可塑化溶融される。可塑化された樹脂（５）は前
方（第１図では左方向）へ送られて貯留されるので、ス
クリュ（３）は回転につれ後退（第１図では右方向）を
続け、予め設定された計量値りで回転停止する。この状
態を第２図に示す。Figure 1 is a schematic example of a plasticizing device of a conventional injection molding machine, in which a screw cylinder (
2) and the screw (3), the raw resin (A) from the hole/-: (4') is fed by the screw (3) and plasticized and melted. The plasticized resin (5) is sent forward (to the left in Figure 1) and stored, so the screw (3) continues to move backward (to the right in Figure 1) as it rotates, until it reaches the preset position. Rotation stops when the measured value is reached. This state is shown in FIG.

計量された浴融樹脂は、図示されていない金型内に油圧
シリンダ（６）により射出される。The measured amount of bath melt resin is injected into a mold (not shown) by a hydraulic cylinder (6).

従来、ポリスチロール、Ａｓ、ＡＢＳ、アクリル樹脂等
で、成形品容量が大きい（計量値りが大きい）場合には
、スクリュ後退の後半で樹脂が順調に喰い込まず、数秒
間スクリュ後退が停滞することがある。このショットの
成形品の表面には、銀線状の筋が現われ、銀条不良と呼
ばれる成形不良になる。またポリプロピレン、ポリエチ
レン樹脂等で成形品容量が大きい場合には、スクリュの
後退の後半では喰込みは順調であるが、スクリュの有効
長Ｓが減少するため、計量値しの後半部は混練不足とな
゛る。この混練不足が原因で、色分散不良や流動性不良
に基づくショートショット〔型への未充填〕を生ずる。Conventionally, when molded products such as polystyrene, As, ABS, acrylic resin, etc. have a large volume (measured value is large), the resin does not dig in smoothly in the latter half of the screw retraction, and the screw retraction stagnates for several seconds. Sometimes. Silver line-like streaks appear on the surface of the molded product of this shot, resulting in a molding defect called a silver streak defect. In addition, when the volume of the molded product is large, such as polypropylene or polyethylene resin, the biting is smooth in the latter half of the screw's retraction, but the effective length S of the screw decreases, resulting in insufficient kneading in the latter half of the measured value. It's gone. This insufficient kneading causes short shots (unfilled molds) due to poor color dispersion and poor fluidity.

前記ポリスチロール樹脂の喰込み不良に対し、第３図に
示すようにホッパ（４’）真下付近のスクリュシリンダ
（２）の一部に凹溝（ｇ）を設け、樹脂の喰込みな助け
るキードスリーブ装置対策がある。In order to prevent the polystyrene resin from biting in, a concave groove (g) is provided in a part of the screw cylinder (2) right below the hopper (4') as shown in Fig. 3 to prevent the resin from biting in. There are countermeasures for sleeve devices.

しかし計量の前半は、キードスリーブ作用が効き過ぎて
喰込み過ぎたり、粘度が高い樹脂使用テ４−１１．７．
フリユ回転用油圧モータ（７）のトルク不足などが生し
、汎用性に欠ける等の問題があった０ 本発明は多揮装置生産の多い射出成形機で汎用性に欠け
る従来のキードスリーブに対し、調整可能なキードスリ
ーブを使用し、従来のポリス−１−０−／ｌｚ　系の銀
条現象、ポリプロピレン、塩化ビニール樹脂で発生しゃ
すい混練不足等の欠点を解消するために提案されたもの
で、樹脂の喰込み量をスクリュ後退速度センサで検出し
、この信号人力Ｇこより自動的に調整可能なキードスリ
ーブ装置を作動させ、スクリュ回転数を変えることなく
可塑化速度（スクリュ後退速度）を任慧に調整できる、
すなわち調整可能なキードスリーブ装置１組で、樹脂の
種類や成形品の大きさに応じ、キードスリーブ効果を調
整し、喰込み量に伴なう成形不良を防止するようにした
成形機を提供せんとするものである。However, in the first half of the measurement, the keyed sleeve action is too effective and the resin bites in too much, or the resin with high viscosity is used.4-11.7.
There have been problems such as insufficient torque of the hydraulic motor (7) for rotating the flywheel, resulting in a lack of versatility.0 The present invention is designed to replace the conventional keyed sleeve, which lacks versatility, in injection molding machines that often produce multi-volatile equipment. On the other hand, an adjustable keyed sleeve was proposed to eliminate the drawbacks of the conventional Poly-1-0-/lz system, such as the silver streak phenomenon and insufficient kneading that occurs with polypropylene and vinyl chloride resin. The amount of resin bite is detected by a screw retraction speed sensor, and this signal is used to automatically operate the adjustable keyed sleeve device to adjust the plasticization speed (screw retraction speed) without changing the screw rotation speed. ) can be adjusted to suit your needs.
In other words, we have created a molding machine that uses a set of adjustable keyed sleeve devices to adjust the keyed sleeve effect according to the type of resin and the size of the molded product, thereby preventing molding defects caused by the amount of biting. This is what we intend to provide.

以下本発明の実施例を図面について説明すると、第１１
１１、第Ｓ図は本発明の実施例を示し、図中（コ）はス
クリュシリンダ、（３）はスクリュ、（ｑ）はホッパ・
（６）は油圧シリンダ、（７）は油圧モータであり・こ
れらは第１図と同じ符号で示す。さて第４７図に示すよ
うに、速度センサ（９）によりスクリュ後退速度（可塑
化速度）を検出し、予め設定されたスクリュ後退速度と
比較器（／ので比較する。Embodiments of the present invention will be described below with reference to the drawings.
11. Figure S shows an embodiment of the present invention, in which (c) is a screw cylinder, (3) is a screw, and (q) is a hopper.
(6) is a hydraulic cylinder, and (7) is a hydraulic motor; these are indicated by the same reference numerals as in FIG. Now, as shown in FIG. 47, the screw retraction speed (plasticization speed) is detected by the speed sensor (9) and compared with a preset screw retraction speed using the comparator (/).

このとき設定値と実行値の差分の程度による比較器（ｌ
のからの電気出力で、調整可能なキードスリーブ装置の
キー（／／）　（（／／ａ）〜（ｌｌｄ）　）が、電磁
弁（／２）　（（／ｕａ）　〜（ｌｌｄ）　）と油圧シ
リンダ（１３）（（／Ｊａ）　〜（ｌｌｄ）　）により
スクリュシリンダ（２）の凹溝内で半径方向に出入する
０第５図は調整可能なキードスリーブ装置の一例を示す
。図のように調整可能なキードスリーブ装置は、キー（
／／ａ）（／／ｂ）（／／ｃ）　（／１ｔｌ）、電磁弁
（／Ｊａ）（／２ｂ）（／λ（３）Ｃ／２（１）　、油
圧シリンダ（／、７ａ）（／ｊｂ）（／Ｊｃ）（ｌｌｄ
）のように複数個のキー、’Ｋａ弁、油圧シリンダ、ス
クリュシリンダ（２）の凹溝より構成される。At this time, a comparator (l
The electrical output from the adjustable keyed sleeve device keys (//) ((//a) ~ (lld) ) connects the solenoid valve (/2) ((/ua) ~ (lld) ). FIG. 5 shows an example of an adjustable keyed sleeve device, which is moved in and out of the groove of the screw cylinder (2) in the radial direction by means of the hydraulic cylinder (13) ((/Ja) to (lld)). The adjustable keyed sleeve device, as shown, has a key (
//a) (//b) (//c) (/1tl), Solenoid valve (/Ja) (/2b) (/λ(3)C/2(1), Hydraulic cylinder (/, 7a)( /jb)(/Jc)(lld
), it is composed of a plurality of keys, a 'Ka valve, a hydraulic cylinder, and a concave groove of a screw cylinder (2).

スクリュシリンダ（２）の凹溝は、キー（／／ａ）（／
／ｂ）（ｌ／Ｃ）（ｌｌｄ）すべてがスクリュシリンダ
（２）の中心方向に最大量移動したとき、切欠きのない
一般のスクリュシリンダが形成される。なお、キー（／
／ａ）（／／ｂ）（／／Ｑ）（ｌｌｄ）はそれぞれ単独
に比較器（ｉｏ）の信号出力により制御されるので、各
種のキードスリーブが形成されることになる０′次に作
用を説明すると、射出成形機の可塑化は、ボルトとナツ
トの関係と同様である。すなわち、ナツトにあたるのが
原料樹脂であり、ボルトにあたるのがスクリュである。The concave groove of the screw cylinder (2) is connected to the key (//a) (/
/b) (l/C) (lld) When all have moved the maximum amount towards the center of the screw cylinder (2), a general screw cylinder without notches is formed. Please note that the key (/
/a) (//b) (//Q) (lld) are each independently controlled by the signal output of the comparator (io), so that various keyed sleeves are formed. To explain how it works, plasticization in an injection molding machine is similar to the relationship between a bolt and a nut. In other words, the nut is the raw resin, and the bolt is the screw.

スクリュが樹脂Ｐ可塑化し後退するのは、樹脂がスクリ
ュシリンダに貼付き気味で、スクリュ表面と樹脂が順調
にすべるときである０ところがスクリュ形状、スクリュ
温度、樹脂の組合せによっては、樹脂がスクリュ表面に
貼付き、共回りしてスクリュが後退しなくなる現象があ
る。When the screw plasticizes and retreats, the resin tends to stick to the screw cylinder, and the screw surface and resin slide smoothly. However, depending on the screw shape, screw temperature, and combination of resin, the resin may stick to the screw cylinder. There is a phenomenon where the screw sticks to the screw and rotates together, preventing the screw from retracting.

一般にスクリュとスクリュシリンダ温度は異なり、ホ゛
リスチロールやＡＢＳ樹脂では、これらの樹脂とスクリ
ュやスクリュシリンダの特定温度の組合せで摩擦係数に
ピーク値が現われ、しばしばスクリュと樹脂の共回り現
象が発生する。またポリスチロール、ＡＢＳ樹脂では、
計量の後半でスクリュ後退速度が減少しやすく、数秒間
特定位置で停滞する場合もあり、このときスクリュ後退
速度は零である。In general, the screw and screw cylinder temperatures are different, and with polystyrene and ABS resin, a peak value appears in the friction coefficient when these resins are combined with a specific temperature of the screw or screw cylinder, and a co-rotation phenomenon of the screw and resin often occurs. In addition, polystyrene and ABS resin,
In the latter half of metering, the screw retraction speed tends to decrease, and the screw may remain at a specific position for several seconds, at which time the screw retraction speed is zero.

しかし本発明装置を使用すれば、スクリュ後退速度が設
定値より低下した場合、スクリュ後退速度センサの信号
出力により、キードスリーブ装置が働き・ホッパ下のス
クリュシリンダ内壁に複数個の溝が形成され、樹脂の喰
込み作用が促進される。このとき後退速度が設定値に達
しないならば、さらに新たな溝が形成され、実際のスク
リュ後退速度と設定値との差が最小になるキードスリー
ブが形成される。なお、スクリュ後退速度の制御は、キ
ードスリーブ装置の溝本数を変えて行なっても、また溝
深さを変えて行なっても何れでも可能である。However, if the device of the present invention is used, when the screw retraction speed falls below the set value, the signal output from the screw retraction speed sensor activates the keyed sleeve device, forming multiple grooves on the inner wall of the screw cylinder below the hopper. , the biting action of the resin is promoted. If the retraction speed does not reach the set value at this time, a new groove is formed to form a keyed sleeve that minimizes the difference between the actual screw retraction speed and the set value. The screw retraction speed can be controlled either by changing the number of grooves in the keyed sleeve device or by changing the depth of the grooves.

マタポリプロピレン、ポリエチレン樹脂では、計量の後
ｔでスクリュ有効長が減少しても、スクリュ後退速度が
ほとんど低下しない結果として、計量値方向の混練不足
が発生し、ショートショットや色分散不良が発生しやす
くなる。こσ）場合、計量の前半はキードスリーブの効
果で喰込みを促進し、計量の後半ではキードスリーブの
効果を抑制しく極限値は溝のまったくない一般シリンダ
）、混練不足を解消する。For mata polypropylene and polyethylene resins, even if the screw effective length decreases at t after metering, the screw retraction speed hardly decreases, resulting in insufficient kneading in the direction of the measured value, resulting in short shots and poor color dispersion. It becomes easier. In this case, the effect of the keyed sleeve promotes biting in the first half of the measurement, and the effect of the keyed sleeve is suppressed in the second half of the measurement (the ultimate value is a general cylinder with no grooves at all), eliminating insufficient kneading.

以上詳細【こ説明した如く本発明は構成されているので
・銀条、色分散、ショートショットなどの成形品不良を
防止し成形品の歩留りを向上することができ、かつスク
リュおよびキードスリーブを変える必要がないので、多
種少量生産下で労力が節約できる。また運転立上りにお
いても、可塑化時間を一定にするので、樹脂温度が比較
的速く安定し、運転立上りのロスの減少および作業者の
負担が軽減される。Details [As explained above, the present invention is constructed so that molded product defects such as silver streaks, color dispersion, and short shots can be prevented and the yield of molded products can be improved, and screws and keyed sleeves can be Since there is no need to change, labor can be saved in high-mix, low-volume production. Furthermore, since the plasticizing time is kept constant even at the start of operation, the resin temperature is stabilized relatively quickly, reducing loss at the start of operation and reducing the burden on the operator.

なお、他の実施例として、スクリュの可塑化速度を検出
する方法として速度センサの他に、スクリュ回転用油田
モータの負荷油圧を検出する油圧センサ（／りを使用す
ることもできる。また図示していないが、スクリュの負
荷トルクを検出するセンサを使用しても良い。また可塑
化速度と油圧モータの負荷油圧、可塑化速度とスクリュ
負荷トルクは何れも強い相関関係があるため、本発明装
置のセンサとして使用可能である。As another example, in addition to the speed sensor, a hydraulic pressure sensor (/) for detecting the load hydraulic pressure of the oil field motor for rotating the screw may be used as a method for detecting the plasticization speed of the screw. However, a sensor that detects the load torque of the screw may be used.Also, since there is a strong correlation between the plasticization speed and the load oil pressure of the hydraulic motor, and the plasticization speed and the screw load torque, the device of the present invention It can be used as a sensor.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の射出成形機の可塑化装置の側断面図、第
２図は第１図と作動状態を異にする側断面図、第３図は
第一図のＡ　−Ａ拡大断面図、第４図は本発明の実施例
を示す射出成形機の側断面図・第Ｓ図は第ダ図のＢ−Ｂ
拡大断面図である。 図の主要部分の説明Fig. 1 is a side sectional view of a plasticizing device of a conventional injection molding machine, Fig. 2 is a side sectional view showing a different operating state from Fig. 1, and Fig. 3 is an enlarged sectional view taken along A-A of Fig. 1. , FIG. 4 is a side sectional view of an injection molding machine showing an embodiment of the present invention, and FIG.
It is an enlarged sectional view. Description of the main parts of the diagram

Claims (1)

【特許請求の範囲】[Claims] 予め設定された可塑化／＜ターン又は可塑化速度とセン
サで検出した実際の可塑化状態を比較して調整可能なキ
ードスリーブ装置にフィードバックし、可塑化状態を自
動的にコントロールすることを特徴とする成形機０It is characterized by comparing the preset plasticization/<turn or plasticization speed with the actual plasticization state detected by the sensor and feeding it back to the adjustable keyed sleeve device to automatically control the plasticization state. Molding machine 0
JP57091027A 1982-05-28 1982-05-28 Molding machine Granted JPS58208028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57091027A JPS58208028A (en) 1982-05-28 1982-05-28 Molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57091027A JPS58208028A (en) 1982-05-28 1982-05-28 Molding machine

Publications (2)

Publication Number Publication Date
JPS58208028A true JPS58208028A (en) 1983-12-03
JPS6334805B2 JPS6334805B2 (en) 1988-07-12

Family

ID=14015036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57091027A Granted JPS58208028A (en) 1982-05-28 1982-05-28 Molding machine

Country Status (1)

Country Link
JP (1) JPS58208028A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237618A (en) * 1985-04-15 1986-10-22 Teiyoo Kk Manufacture of molded article made of synthetic resin and its manufacturing device
CN102451644A (en) * 2010-10-14 2012-05-16 中国石油化工股份有限公司 Fibrous material conveying device
US20180147768A1 (en) * 2016-11-30 2018-05-31 Toyo Tire & Rubber Co., Ltd. Molding member shape control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237618A (en) * 1985-04-15 1986-10-22 Teiyoo Kk Manufacture of molded article made of synthetic resin and its manufacturing device
CN102451644A (en) * 2010-10-14 2012-05-16 中国石油化工股份有限公司 Fibrous material conveying device
US20180147768A1 (en) * 2016-11-30 2018-05-31 Toyo Tire & Rubber Co., Ltd. Molding member shape control device
JP2018089794A (en) * 2016-11-30 2018-06-14 東洋ゴム工業株式会社 Shape control device of mold member

Also Published As

Publication number Publication date
JPS6334805B2 (en) 1988-07-12

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