JPS58179631A - Controlling method and equipment of screw back pressure of injection apparatus - Google Patents
Controlling method and equipment of screw back pressure of injection apparatusInfo
- Publication number
- JPS58179631A JPS58179631A JP6283582A JP6283582A JPS58179631A JP S58179631 A JPS58179631 A JP S58179631A JP 6283582 A JP6283582 A JP 6283582A JP 6283582 A JP6283582 A JP 6283582A JP S58179631 A JPS58179631 A JP S58179631A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- shaft
- back pressure
- holding member
- gear
- 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
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
- B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5028—Drive means therefor screws axially driven by the coaxial rotor of an electric motor
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5032—Drive means therefor using means for detecting injection or back pressures
- B29C2045/5036—Drive means therefor using means for detecting injection or back pressures back pressure obtaining means
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5076—Drive means therefor using a single drive motor for rotary and for axial movements of the screw
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は射出機構を電動機をもって駆動する射出装置
のスクリュ背圧制御に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to screw back pressure control of an injection device in which an injection mechanism is driven by an electric motor.
射出成形機において、電動機を駆動源として用いたもの
は既に公知となっている。この場合に問題となることは
、スクリュの背圧制御をどのようになすかである。Injection molding machines using an electric motor as a drive source are already known. In this case, the problem is how to control the back pressure of the screw.
この発明はザーＪ？モータを動力として用いる場合に、
油圧を利用することなくブレーキ装置を使用して、スク
リュの背圧制御をなすことができる方法及び装置を提供
しようとするものである。Is this invention the J? When using a motor as power,
It is an object of the present invention to provide a method and device that can control the back pressure of a screw using a brake device without using hydraulic pressure.
以下この発明を図面に示す実施例により詳細に説明する
。The present invention will be explained in detail below with reference to embodiments shown in the drawings.
図中１は型締機構、２は射出機構を示す。型締機構１は
、機台３上の一対の固定盤１０，１１に架設したタイバ
ー１２と、該タイバー１２に移動自在に取付けた可動盤
１３とを有する。上記一方の固定盤１１と可動盤１３と
の対向面には、それぞれ金型１４．１４が設けてあり、
また可動盤１３の反対面にはねじ軸１５が突設しである
。このねじ軸１５は、他方の固定盤１０に回動自在に装
着した回転盤１６にねじ込まれ、かつ回転盤１６には歯
車１７が取着してあって、その歯車１７吉共に上記回転
盤１６が回転した古き、ねじり一ドによってねじ軸１５
が可動盤１３と一緒に移動するようになっている。In the figure, 1 indicates a mold clamping mechanism, and 2 indicates an injection mechanism. The mold clamping mechanism 1 includes a tie bar 12 installed on a pair of fixed plates 10 and 11 on a machine stand 3, and a movable plate 13 movably attached to the tie bar 12. Molds 14 and 14 are provided on the opposing surfaces of the one fixed platen 11 and the movable platen 13, respectively.
Further, a screw shaft 15 is provided protruding from the opposite surface of the movable platen 13. This screw shaft 15 is screwed into a rotary disk 16 which is rotatably attached to the other stationary plate 10, and a gear 17 is attached to the rotary disk 16. The old screw shaft 15 was rotated by twisting one hand.
is adapted to move together with the movable platen 13.
射出機構２は、スクリュ２０を内装した射出加熱筒２１
と、射出加熱筒２１の保持を兼ねる機台上の・・ウノン
グ２２とを有する。該・・ウノング２２の内部にはスク
リュ２０の後端部と、そのスクリュと平行にて両側に架
設した一対の支州４２４．２４があり、との支軸２４．
２４にスクリュ保持部材２５が前後方向に摺動自在に取
付けである。The injection mechanism 2 includes an injection heating cylinder 21 containing a screw 20.
and an unong 22 on the machine base that also serves to hold the injection heating cylinder 21. Inside the unong 22, there is a rear end of the screw 20, and a pair of branches 424.24 installed on both sides parallel to the screw, and a supporting shaft 24.24.
A screw holding member 25 is attached to 24 so as to be slidable in the front-back direction.
丑だスクリュ２０の後端には、歯車２６を有する延長軸
２７が連設してあり、かつ延長軸２７の端部は上記スク
リュ保持部材２５に回動自在に連結しである。An extension shaft 27 having a gear 26 is connected to the rear end of the screw 20, and the end of the extension shaft 27 is rotatably connected to the screw holding member 25.
更にまたスクリュ保持部材２５の後部に設けたねじ受部
拐２８には、ハウノング壁部２２ ａに回転自在に保持
され、かつ歯車２９を有する軸部３０ａと一体のねじ軸
３０がねじ込んであり、かつ軸部２９のり１端は、ハウ
ノング壁部２２ａに固定したプレーギ装置３１と連結し
ている。このプレーギ装置３■は内部にヒステリスブレ
ーキを具備する。Furthermore, a screw shaft 30 is screwed into a screw receiving part 28 provided at the rear of the screw holding member 25, which is rotatably held by the Hunong wall part 22a and is integral with a shaft part 30a having a gear 29. In addition, one end of the shaft portion 29 is connected to a plagier device 31 fixed to the Haunong wall portion 22a. This pre-gear device 3■ is equipped with a hysteresis brake inside.
このヒステリスブレーキは、フィールドとロータ及びカ
ップ０の３つの部分から構成され、励磁コイルを内蔵す
るフィールドが通電により磁化され、ロータの内外両磁
極間に磁場か発生したとき、磁場におかれたカップ０も
磁化され、ロータとカップが磁気的に連結される構造の
もので、通常に市販されているものである。This hysteresis brake consists of three parts: the field, the rotor, and the cup 0. When the field containing the excitation coil is magnetized by energization and a magnetic field is generated between the outer and outer magnetic poles of the rotor, it is placed in a magnetic field. The cup 0 is also magnetized and has a structure in which the rotor and the cup are magnetically connected, and is commonly available on the market.
３２け上記型締機構側の伝動軸、３３は射出機構側の伝
動１軸で、電磁作動のクラッチ機構３４を介して接離自
在に連設しである。Number 32 is a power transmission shaft on the mold clamping mechanism side, and number 33 is a power transmission shaft on the injection mechanism side, which are connected to each other so as to be able to freely approach and separate via an electromagnetically actuated clutch mechanism 34.
伝動軸３２は第１図に示すように、−１−配置定盤】０
．１１の下部に回動自在に軸承され、かつ固定盤１０に
近接して上記歯車１７と噛合した伝動歯車３５を有する
。丑だ伝動軸３２は伝動Ｍ ３２と、クラッチ軸に設け
た軸方向のスノラインを有するノヨイント３６を １
・介して接続しである。The transmission shaft 32 is arranged as shown in FIG.
．． A transmission gear 35 is rotatably supported on a lower portion of the stationary plate 11 and meshed with the gear 17 in the vicinity of the stationary platen 10. The Ushida transmission shaft 32 has a transmission M 32 and a joint 36 having an axial snow line provided on the clutch shaft.
・Connect via
また伝動軸３３は上記ハウジング２２の下部内に他の伝
動軸３７と共に回転自在に軸承され、その伝動軸３３．
３６十に上記１考車２６及び２７とそれぞれ噛合する伝
動歯車３８．３９と、該歯車の回転及び停止を行う電磁
作動の複数のクラッチ機構４０．４１とが設けてあり、
さらに伝動軸３７に・・ウノング２２に固定したザーポ
モータ４２を駆動ベルト４３を介して連絡させてある。Further, the transmission shaft 33 is rotatably supported in the lower part of the housing 22 together with another transmission shaft 37, and the transmission shaft 33.
360 is provided with transmission gears 38 and 39 that mesh with the first wheels 26 and 27, respectively, and a plurality of electromagnetically operated clutch mechanisms 40 and 41 that rotate and stop the gears,
Further, the transmission shaft 37 is connected to a zarpo motor 42 fixed to the unong 22 via a drive belt 43.
なお４４．４５は伝動軸３３．３６に設けた駆動用の歯
車、４６はノズルタッチ用のねじ軸、４７はねじ軸４６
のクラッチである。Note that 44.45 is a driving gear provided on the transmission shaft 33.36, 46 is a screw shaft for nozzle touch, and 47 is a screw shaft 46.
It is a clutch.
第５図に示した例は、上記支軸２４．２４を回転自在に
架設すると共に、その中はどをねじ軸２４ａ１２４ａと
なし、スクリュ保持部材２５の両端部にねじ受部材２８
．２８を設けて、上記ねじ軸２４ａ、 ２４ａにそれぞ
れねじ込んだ場合であり、支軸２４．２４には史に上記
歯車２９と噛合する歯車２９ａ、２９ａを設け、歯車２
９０回転を歯車２９ａ、２９ａを介して支軸２４．２４
に伝達し、ねじり−ドによりスクリュ保持部材２５をス
クリュ２０と共に進退移動する構造よりなる０次に射出
成形行程について説明する。In the example shown in FIG. 5, the support shaft 24.24 is rotatably installed, the inside thereof is a threaded shaft 24a124a, and the screw holding member 25 has threaded receiving members 28 at both ends.
．． 28 is provided and screwed into the threaded shafts 24a, 24a, respectively, and the spindles 24.24 are provided with gears 29a, 29a that mesh with the gear 29, and the gear 2
90 rotations through the gears 29a, 29a on the support shaft 24.24
A zero-order injection molding process will be described in which the screw holding member 25 is moved forward and backward together with the screw 20 by the torsion.
第４図に示すクラッチ機構により伝動軸３２．３３を接
続した状態１でて、サー、ゼモータ４２を正回転させる
。この際、射出機構２側ではクラッチ機構４０．４１の
作動により伝動歯車３９．４０を自由状態にして置く。With the clutch mechanism shown in FIG. 4 in state 1 in which the transmission shafts 32 and 33 are connected, the motor 42 is rotated in the forward direction. At this time, on the injection mechanism 2 side, the transmission gear 39.40 is placed in a free state by the operation of the clutch mechanism 40.41.
伝動軸３２と伝動歯車３５及び歯車１７とによって回転
盤１６が回転し、ねじ輔１５が送り出される。この結果
、可動盤１３が前進移動して金型１４．１４が閉じ、更
に強力型締が行われる。型締圧が所定圧に達したならば
電気的にブレーキを作動して伝動軸３２を固定し、さら
にクラッチ機構３４を作動して伝動軸３３の接続を断つ
。The rotary disk 16 is rotated by the transmission shaft 32, the transmission gear 35, and the gear 17, and the screw thread 15 is fed out. As a result, the movable platen 13 moves forward, the molds 14 and 14 are closed, and even stronger mold clamping is performed. When the mold clamping pressure reaches a predetermined pressure, the brake is electrically activated to fix the transmission shaft 32, and the clutch mechanism 34 is further activated to disconnect the transmission shaft 33.
また射出機構側では指令によってクラッチ機構４０が作
動し、伝動歯車３９を伝動軸３３と共に回転させる。こ
れにより歯車２９と一緒にねじ軸３０も回転し、スクリ
ュ・保持部材２５をねじり一ドにより前進させる。この
スクリュ保持部材２５には、スクリュ後端の延長軸２７
が軸承しであるから、スクリュ−２０も共に前進して射
出を行う。Further, on the injection mechanism side, the clutch mechanism 40 is activated by the command, and the transmission gear 39 is rotated together with the transmission shaft 33. As a result, the screw shaft 30 also rotates together with the gear 29, and the screw/holding member 25 is moved forward by twisting. This screw holding member 25 includes an extension shaft 27 at the rear end of the screw.
Since this is a bearing, the screw 20 also moves forward together to perform injection.
射出が完了すると、指令によってサーボモータ４２が停
止し、同時にクラッチ機構４１を作動して歯車３９との
接続を断つ。次にクラッチ機構４０が作動して伝動南東
３８を伝動軸３３と共に回転するようにする０そＩ−て
再びサーボモータ４２が逆回転すると、スクリュ２０が
回転し、材料が移送される。材料の移送によってスクリ
ュ２０に発生した後退力はスクリュ保持部材２５を介し
て、ねじ軸３０にスクリュ前進時と逆方向の回転力を発
生させる。When the injection is completed, the servo motor 42 is stopped by the command, and at the same time, the clutch mechanism 41 is activated to disconnect the gear 39. Next, the clutch mechanism 40 is actuated to cause the transmission southeast 38 to rotate together with the transmission shaft 33. Then, when the servo motor 42 rotates in the reverse direction again, the screw 20 rotates and the material is transferred. The backward force generated in the screw 20 due to the transfer of the material generates a rotational force in the screw shaft 30 through the screw holding member 25 in a direction opposite to that when the screw advances.
同時にブレーキ装置３１を作動させ、ねじ軸３０にブレ
ーキ力を与えることに」：す、いわゆるスクリュ背圧を
発生しながら材料の計量が行われる。At the same time, the brake device 31 is actuated to apply a braking force to the screw shaft 30, and the material is measured while generating so-called screw back pressure.
態量が済むと型締機構側では、クラッチ機構３４が作動
し、ズ７レーキを解除するとともに伝動軸３２を再び伝
動軸３３に接続する。またサーボモータ４２を逆回転す
ることにより、ねじ軸】５は逆回転して型開きが行われ
、１ザイクルの射出成形が完了するＯ
この発明は上述のように、スクリュの回転に伴なう成形
材料のチャージによって発生するスクリュの後退移動を
、回転運動に変換し、その回転力を制御するようにした
ので、下記のごとき効果を奏する。When the amount of pressure is completed, the clutch mechanism 34 is activated on the mold clamping mechanism side to release the 7 rake and connect the transmission shaft 32 to the transmission shaft 33 again. Furthermore, by rotating the servo motor 42 in the opposite direction, the screw shaft 5 is rotated in the opposite direction to open the mold, completing one cycle of injection molding. The backward movement of the screw caused by the charging of the molding material is converted into rotational motion and the rotational force is controlled, resulting in the following effects.
１、 スクリュの背圧調整を油圧を用いることなく行な
うことができ、−際油圧を使用しない成形機を可能にし
た。1. The back pressure of the screw can be adjusted without using hydraulic pressure, making it possible to create a molding machine that does not use hydraulic pressure.
２、フ゛レーキにヒステリノスプレーギをｆ史１月する
等によって、スクリュの後退速度による回５転速度の変
化に影響されずに、任意にかつ精密に背圧の制御が可能
であり、均一な樹脂の混線が得られる。2. By applying a hysterinus spray to the brake, it is possible to arbitrarily and precisely control the back pressure without being affected by changes in the rotational speed due to the backward speed of the screw, resulting in uniform control. Resin crosstalk is obtained.
３、ブレーキは射出充填時の保圧用に利用でき、又回転
軸（ねじ軸）は射出前進用の駆動軸として兼用すること
もできるので合理的である。3. The brake can be used to maintain pressure during injection and filling, and the rotating shaft (screw shaft) can also be used as a drive shaft for advancing injection, which is rational.
４、電磁式ブレーキを使うことにより、ブレーキ力の制
御が容易であり、スクリュの後退に伴ない背圧を変化さ
せる等の複雑な制御をすることもできる。4. By using an electromagnetic brake, it is easy to control the braking force, and it is also possible to perform complex control such as changing the back pressure as the screw retreats.
図面はこの発明に係る開側１方法を実施するに用いる装
置を示すもので、第１図は射出成形機の側面図、第２図
は射出装置の横断平面図、第３図はハウジング部分にお
ける縦断面図、第４図はハウジング部分
装置の他の実施例の横断平面図である。
１・・・・型締装置 ２・・・・射出装置２１
・・ スクリュ ２６・・・・歯車２７・
・・・延長軸 ３１・・・・ ブレーキ装置
４２ ・・・ サーボモータ
特許出願人 日精樹脂工業株式会社
−１／Ｉ
手続補正書動式）
昭和５７年 ８月 ２６日
昭和５７年特許願第６２８３５号
２、発明の名称
射出装置のスクリュ背圧制御方法及び装置３、 補正を
する者。
事件との関係 出願人
氏名（名称） 日積樹脂工業株式会社４、代理人
住所 東京都港区南青山−丁目１番１号（発送日）昭和
５７年 ７ 月 ２７日６、補正の対象
７ 補正の内容 ｄ唖１１蔓さ図
面
図面全部を別紙のとおり補正＼肥太−ノ手続補正書
昭和５８年７月１５日
昭和５７年特許願第６２８３５ 号
２、発明の名称
射出装置のスクリュ背圧制御方法及び装置３、 補正を
する者
事件との関係 出願人
氏名（名称） 日精樹脂工業株式会社４、代理人
住所 東京都港区南青山−丁目１番１号明細書全文及び
図面第１図、第３図、第４図、第５図、補正明細書
１発明の名称
射出装置のスクリュ背圧制御方法及び装置２、特許請求
の範囲
（＋１ スクリュの回転に伴なう成形材料のチャージ
によって発生するスクリュの後退移動を回転運動に変換
し、その回転力を制御することを特徴とする射出装置の
スクリュ背圧制御方法。
（２） スクリュの後端部に一体に連設され、かつス
クリュに回転力を与える歯車を有し、軸端をスクリュ保
持部材に回転自在に連結した延長軸と、ハウジング内に
架設した一対の支軸に進退移動自在に設けられた上記ス
クリュ保持部材と、そのスクリュ保持部材の後部にあっ
て、スクリュ保持部材と共に移動するスクリュの後退移
動を回転運動に変換するねじ軸と、該ねじ軸の軸部と連
絡し、かつスクリュ保持部材の移動による軸部の回転力
を制御するブレーキ装置とから々る射出装置の背圧制御
装置。
３、発明の詳細な説明
この発明は射出機構を電動機をもって駆動する射出装置
のスクリュ背圧制御に関するものである。
射出成形機において、電動機をスクリュの回転用駆動源
として用いたものは既に公知となっているが、この場合
に於いてもスクリュの背圧制御には油圧を利用しなけれ
ばならなかった。
この発明はスクリュの後退移動を回転運動に変換し、そ
の回転力をブレーキ装置により制御することによって油
圧を利用することなくスクリュの背圧制御をなすことが
できる方法及び装置を提供しようとするものである。
以下この発明を図面に示す実施例により詳細に説明する
。
図中１は型締装置、２は射出装置を示す。型締装置１は
、機台３上の一対の固定盤１ｏ、１１に架設したタイバ
ー１２と、該タイバー１２に移動自在に取付けた可動盤
１３とを有する。上記一方の固定盤１１と可動盤１３と
の前向面には、それぞれ金型１４．１４が設けてあり、
寸だ可動盤１３の反対面にはねじ軸１５が突設しである
。このねじ軸１５は、他方の固定盤１０に回動自在に装
着した回転盤１６にねじ込まれ、かつ回転盤１６には歯
車１７が取着してあって、その歯車１７と共に」二記回
転盤１６が回転したとき、ねじり一ドによってねじ軸１
５が可動盤１３と一緒に移動するようになっている。
射出装置２は、スクリュ２０を内装した射出加熱筒２１
と、射出加熱筒２１の保持を兼ねる機台上のハウジング
２２とを有する。該ハウジング２２の内部にはスクリュ
加の後端部と、そのスクリュと平行して両側に架設した
一対の支軸２４．２４があり、この支軸２４．２４にス
クリュ保持部材２５が前後方向に摺動自在に取付けであ
る。
１だスクリュ２０の後端には、歯車２６を有する延長軸
２７が連設してあり、かつ延長軸２７の端部は上記スク
リュ保持部材２５に回動自在に連結しである。
更にまたスクリュ保持部材２５の後部に設けたねじ受部
材２８には、ハウジング壁部２２ａに回転自在に保持さ
れ、かつ歯車２９を有する軸部３０ａと一体のねじ軸３
０がねじ込んであり、Ｉ？−軸部３０ａの外端は、ハウ
ジング壁部２２ａに固定したブレーキ装置３１と連結し
ている。このブレーキ装置３１は内部にヒステリシスブ
レーキを具備する。
このヒステリシスブレーキは、フィールドとロータ及び
カップの３つの部分から構成され、励磁コイルを内蔵す
るフィールドが通電により磁化され、ロータの内外両磁
極間に磁場が発生したとき、磁場におかれたカップも磁
化され、ロータとカップが磁気的に連結される構造のも
ので、通常に市販されているものである。３２は上記型
締装置側の伝動軸、３３は射出装置側の伝動軸で、伝動
軸３２は第１図に示すように、上記固定盤１．０．１１
の下部に回動自在に軸承され、かつ固定盤１０に近接し
て上記歯車１７と噛合した伝動歯車３５を有する。また
伝動軸３２はスプラインを有するジヨイント３６ａを介
して伝動軸３６と接続されており、伝動軸３６は伝動軸
３３と電磁作動のクラッチ機構３４を介して接離自在に
連設しである。
また伝動軸３３は上記ハウジング２２の下部内に他の伝
動軸３７と共に回転自在に軸承され、その伝動軸３３．
３７上に上記歯車２６及び２９とそれぞれ噛合する伝動
歯車３８．３９と、該歯車の回転及び停止を行う電磁作
動の複数のクラッチ機構４０．４１とが設けであり、さ
らに伝動軸３７にハウジング２２に固定したサーボモー
タ４２を駆動ペルー・４３を介して連絡させである。
なお４４．４５は伝動軸３３．３７に設けた駆動用の歯
車、４６はノズルタッチ用のねじ軸、４７はねじ軸４６
のクラッチである。
第５図に示した例は、上記支軸２４．２４を回転自在に
架設すると共に、その中はどをねじ軸２４ａ１２４ａと
外し、スクリュ保持部材２５の両端部にねじ受部材２８
．２８を設けて、上記ねじ軸２４ａ、２４ａにそれぞれ
ねじ込んだ場合であり、支軸２４．２４には更に上記歯
車２９と噛合する歯車２９ａ、２９ａを設け、歯車２９
の回転を歯車２９ａ 、 ２９ａを介して支軸２４．２
４に伝達し、ねじり一ドによりスクリュ保持部材２５を
スクリュ２０と共に進退移動する構造よりなる。
次に射出成形行程について説明する。
クラッチ機構３４により伝動軸３２．３３を接続した状
態にて、サーボモータ４２を正回転させる。この際、射
出装置２側ではクラッチ機構４０．４１の作動により伝
動歯車３８．３９を自由状態に（〜で置く。
伝動軸３２と伝動歯車３５及び歯車１７とＶ（よって回
転盤１６が回転し、ねじ軸１５が送り出される。この結
果、可動盤１３が前進移動して金型１４．１４が閉じ、
更に強力型締が行われる。型締圧が所定圧に達したなら
ばブレーキ４８を作動して伝動軸３２を固定し、さらに
クラッチ機構３４を作動して伝動軸３３との接続を断つ
。
また射出装置側では指令によってクラッチ機構４１が作
動し、伝動歯車３９を伝動軸３３と共に回転させる。こ
れにより歯車２９と一緒にねじ軸３０を回転させ、スク
リュ保持部材２５をねじり一ドにより前進させる。この
スクリュ保持部材２５には、スクリュ後端の延長軸２７
が軸承しであるから、スクリュ２０も共に前進して射出
を行う。
射出が完了すると、指令によってサーボモータ １４
２が停止し、同時にクラッチ機構４１を作動して歯車３
９との接続を断つ。次にクラッチ機構４ｏが作動して伝
動歯車３８を伝動軸３７と共に回転するようにする。そ
して再びサーボモータ４２が逆回転すると、スクリュ２
０が回転し、材料が移送される。材料の移送によってス
クリュ２ｏに発生した後退力はスクリュ保持部材２５を
介して、ねじ軸３ｏにスクリュ前進時と逆方向の回転力
を発生させる。
同時にプレーギ装置３１を作動させ、ねじ軸３ｏにブレ
ーキ力を与えることにより、いわゆるスクリュ背圧を発
生しながら材料の計量が行われる。
計量が済むと型締機構側では、電磁ブレーキ４８を解除
するとともにクラッチ機構３４が作動し、伝動軸３２を
再び伝動軸３３に接続する。またサーボモータ４２を逆
回転することにより、ねじ軸１５は逆回転して型開きが
行われ、１サイクルの射出成形が完了する。々お、１５
．２４．ａ、 ３０の各ねじ軸には伝達効率などからボ
ールねじを使用しである。
この発明は上述のように、スクリュの回転に伴々う成形
材料のチャージによって発生するスクリュの後退移動を
、回転運動に変換し、その回転力を制御するようにした
ので、下記のごとき効果を奏する。
１、スクリュの背圧調整を油圧を用いることなく行なう
ことができ、−、：ｔ−％油圧を使用しない成形機を可
能にした。
２、ブレーキにヒステリシスブレーキを使用する等によ
って、スクリュの後退速度による回転速度の変化に影響
されずに回転力を制御でき、任意にかつ精密に背圧の制
御が可能であり、均一な樹脂の混練が得られる。
３、ブレーキは射出充填時の保圧用に利用でき、又回転
軸（ねじ軸）は射出前進用の駆動軸として兼用すること
もできるので合理的である。
４、電磁式ブレーキを使うことにより、ブレーキ力の制
御が容易であり、スクリュの後退に伴ない背圧を変化さ
せる等の複雑な制御をすることもできる。
４、図面の簡単な説明
図面はこの発明に係る制御方法を実施するに用いる装置
を示すもので、第１図は射出成形機の側面図、第２図は
射出装置の横断平面図、第３図はハウジング部分におけ
る縦断面図、第４図はハウジング下部における横断平面
図、第５図は射出装置の他の実施例の横断平面図、第６
図は第５図のハウジング部分における縦断面図である。
１・・・・型締装置 ２・・・・射出装置２１・
・・・スクリュ ２６・・・・歯車２７・・・・
延長軸 ３１・・・・ブレーキ装置４２・・・
・ザーボモータ
特許出願人 日精樹脂工業株式会社
９−The drawings show an apparatus used to carry out the open side method 1 according to the present invention, in which Fig. 1 is a side view of an injection molding machine, Fig. 2 is a cross-sectional plan view of the injection device, and Fig. 3 is a view of the housing section. FIG. 4 is a cross-sectional plan view of another embodiment of the housing part arrangement. 1... Mold clamping device 2... Injection device 21
・・Screw 26・・・・Gear 27・
... Extension shaft 31 ... Brake device 42 ... Servo motor patent applicant Nissei Jushi Kogyo Co., Ltd.-1/I Procedural amendment written type) August 26, 1981 Patent application No. 62835 Item 2. Name of the invention Method and device for controlling screw back pressure in an injection device 3. Person making the amendment. Relationship to the case Applicant's name: Nisseki Jushi Kogyo Co., Ltd. 4, Agent's address: 1-1 Minami Aoyama-chome, Minato-ku, Tokyo (Date of dispatch) July 27, 1980 6, Subject of amendment 7: Amendment Contents of d dumb 11 vine diagram
All surface drawings are amended as shown in the attached sheet ＼ Thickness procedure amendment document July 15, 1980 Patent Application No. 62835 filed in 1988 2 Title of invention Method and device for controlling screw back pressure of injection device 3 Amended Relationship with the case filed by the applicant Applicant name: Nissei Jushi Kogyo Co., Ltd. 4, Agent address: 1-1 Minami Aoyama-chome, Minato-ku, Tokyo Full text of the specification and drawings 1, 3, 4, Figure 5, Amended Specification 1 Name of the Invention Method and Device for Controlling Screw Back Pressure in an Injection Device 2, Claims (+1) The backward movement of the screw caused by the charge of the molding material accompanying the rotation of the screw is a rotational motion. A method for controlling screw back pressure in an injection device, which is characterized in that the screw back pressure is controlled by converting the back pressure into , an extension shaft whose shaft end is rotatably connected to the screw holding member, the screw holding member provided so as to be movable forward and backward on a pair of support shafts installed in the housing, and a rear part of the screw holding member, A screw shaft that converts the backward movement of the screw that moves together with the screw holding member into rotational motion, and a brake device that communicates with the shaft of the screw shaft and that controls the rotational force of the shaft due to the movement of the screw holding member. Back pressure control device for an injection device. 3. Detailed description of the invention This invention relates to a screw back pressure control device for an injection device in which an injection mechanism is driven by an electric motor. In an injection molding machine, the electric motor is used to drive the rotation of the screw. Although hydraulic pressure has already been known in the public domain, even in this case hydraulic pressure had to be used to control the back pressure of the screw.This invention converts the backward movement of the screw into rotational movement. This invention is intended to provide a method and a device that can control the back pressure of the screw without using hydraulic pressure by controlling the rotational force using a brake device. This will be explained in detail. In the figure, 1 indicates a mold clamping device, and 2 indicates an injection device. It has a movable platen 13 which is freely attached.Molds 14 and 14 are provided on the front faces of the fixed platen 11 and the movable platen 13, respectively.
A screw shaft 15 is provided protruding from the opposite surface of the movable platen 13. This screw shaft 15 is screwed into a rotary disk 16 which is rotatably attached to the other fixed plate 10, and a gear 17 is attached to the rotary disk 16. 16 rotates, the screw shaft 1
5 moves together with the movable platen 13. The injection device 2 includes an injection heating cylinder 21 containing a screw 20.
and a housing 22 on the machine base that also serves to hold the injection heating cylinder 21. Inside the housing 22, there is a rear end of the screw and a pair of support shafts 24.24 installed on both sides in parallel with the screw, and the screw holding member 25 is attached to the support shafts 24.24 in the front-rear direction. It is slidably mounted. An extension shaft 27 having a gear 26 is connected to the rear end of the single screw 20, and the end of the extension shaft 27 is rotatably connected to the screw holding member 25. Furthermore, the screw receiving member 28 provided at the rear of the screw holding member 25 has a screw shaft 3 which is rotatably held on the housing wall 22a and is integral with a shaft portion 30a having a gear 29.
0 is screwed in and I? - The outer end of the shaft 30a is connected to a brake device 31 fixed to the housing wall 22a. This brake device 31 is equipped with a hysteresis brake inside. This hysteresis brake consists of three parts: a field, a rotor, and a cup. When the field containing the excitation coil is magnetized by energization and a magnetic field is generated between the outer and outer magnetic poles of the rotor, the cup placed in the magnetic field also It is magnetized and has a structure in which the rotor and cup are magnetically connected, and is commonly available on the market. 32 is a transmission shaft on the mold clamping device side, 33 is a transmission shaft on the injection device side, and the transmission shaft 32 is connected to the fixed platen 1.0.11 as shown in FIG.
It has a transmission gear 35 which is rotatably supported on a lower part of the plate and meshes with the gear 17 in the vicinity of the stationary platen 10. Further, the transmission shaft 32 is connected to a transmission shaft 36 via a joint 36a having a spline, and the transmission shaft 36 is connected to the transmission shaft 33 via an electromagnetically operated clutch mechanism 34 so as to be able to freely approach and separate. Further, the transmission shaft 33 is rotatably supported in the lower part of the housing 22 together with another transmission shaft 37, and the transmission shaft 33.
Transmission gears 38 and 39 that mesh with the gears 26 and 29, respectively, and a plurality of electromagnetically operated clutch mechanisms 40 and 41 that rotate and stop the gears are provided on the transmission shaft 37. A servo motor 42 fixed to the servo motor 42 is connected via a drive motor 43. Note that 44.45 is a driving gear provided on the transmission shaft 33.37, 46 is a screw shaft for nozzle touch, and 47 is a screw shaft 46.
It is a clutch. In the example shown in FIG. 5, the above-mentioned support shafts 24.24 are rotatably installed, and the screw shafts 24a124a are removed from the inside, and screw receiving members 28 are attached to both ends of the screw holding member 25.
．． 28 is provided and screwed into the screw shafts 24a, 24a, respectively, and the support shafts 24.24 are further provided with gears 29a, 29a that mesh with the gear 29, and the gear 29
The rotation of
4, and the screw holding member 25 is moved forward and backward together with the screw 20 by one twist. Next, the injection molding process will be explained. With the clutch mechanism 34 connecting the transmission shafts 32 and 33, the servo motor 42 is rotated forward. At this time, on the injection device 2 side, the transmission gears 38 and 39 are placed in a free state (~) by the operation of the clutch mechanism 40.41. , the screw shaft 15 is sent out.As a result, the movable platen 13 moves forward and the molds 14 and 14 are closed.
Furthermore, strong mold clamping is performed. When the mold clamping pressure reaches a predetermined pressure, the brake 48 is activated to fix the transmission shaft 32, and the clutch mechanism 34 is further activated to disconnect the transmission shaft 33. Further, on the injection device side, the clutch mechanism 41 is activated by the command, and the transmission gear 39 is rotated together with the transmission shaft 33. As a result, the screw shaft 30 is rotated together with the gear 29, and the screw holding member 25 is moved forward by twisting. This screw holding member 25 includes an extension shaft 27 at the rear end of the screw.
Since this is a bearing, the screw 20 also moves forward together to perform injection. When the injection is completed, the servo motor 14
2 stops, and at the same time the clutch mechanism 41 is actuated to start gear 3.
Cut off the connection with 9. Next, the clutch mechanism 4o is activated to cause the transmission gear 38 to rotate together with the transmission shaft 37. Then, when the servo motor 42 rotates in the opposite direction again, the screw 2
0 rotates and material is transferred. The backward force generated in the screw 2o due to the transfer of the material generates a rotational force in the screw shaft 3o through the screw holding member 25 in a direction opposite to that when the screw advances. At the same time, by operating the plagier device 31 and applying a braking force to the screw shaft 3o, the material is measured while generating so-called screw back pressure. When the weighing is completed, on the mold clamping mechanism side, the electromagnetic brake 48 is released and the clutch mechanism 34 is activated to connect the transmission shaft 32 to the transmission shaft 33 again. Further, by rotating the servo motor 42 in the reverse direction, the screw shaft 15 rotates in the reverse direction to open the mold, completing one cycle of injection molding. 15
．． 24. Ball screws are used for each of the screw shafts a and 30 from the viewpoint of transmission efficiency. As described above, this invention converts the backward movement of the screw caused by the charging of the molding material as the screw rotates into rotational motion and controls the rotational force, resulting in the following effects. play. 1. The back pressure of the screw can be adjusted without using oil pressure, making it possible to create a molding machine that does not use oil pressure. 2. By using a hysteresis brake, etc., it is possible to control the rotational force without being affected by changes in the rotational speed due to the backward speed of the screw, and it is possible to arbitrarily and precisely control the back pressure, resulting in uniform resin production. Kneading is obtained. 3. The brake can be used to maintain pressure during injection and filling, and the rotating shaft (screw shaft) can also be used as a drive shaft for advancing injection, which is rational. 4. By using an electromagnetic brake, it is easy to control the braking force, and it is also possible to perform complex control such as changing the back pressure as the screw retreats. 4. Brief description of the drawings The drawings show an apparatus used to carry out the control method according to the present invention. Fig. 1 is a side view of an injection molding machine, Fig. 2 is a cross-sectional plan view of the injection device, and Fig. 3 is a side view of an injection molding machine. 4 is a cross-sectional view of the lower part of the housing, FIG. 5 is a cross-sectional view of another embodiment of the injection device, and FIG. 6 is a cross-sectional view of the housing portion.
The figure is a longitudinal sectional view of the housing portion of FIG. 5. 1... Mold clamping device 2... Injection device 21.
... Screw 26 ... Gear 27 ...
Extension shaft 31... Brake device 42...
- Servo motor patent applicant Nissei Jushi Kogyo Co., Ltd. 9-
Claims (2)
によって発生するスクリュの後退移動を回転運動に変換
し、その回転力を制御することを特徴とする射出装置の
スクリュ背圧制御方法。(1) A method for controlling screw back pressure in an injection device, which comprises converting the backward movement of the screw caused by charging of molding material as the screw rotates into rotational motion, and controlling the rotational force thereof.
クリュに回転力を与える歯車を有し、軸端をスクリュ保
持部材に回動自在に連結した延長軸と、ハウノング内に
架設した一対の支軸に進退移動自在に設けられた上記ス
クリュ保持部・材と、そのスクリュ保持部材の後部にあ
って、直接または他物を介してスクリュ保持部材と共に
移動するスクリュの後退移動を回転運動に変換する歯車
装置と、該歯車装置の軸部と連絡し、かつスクリュ保持
部材の移動による軸部の回転力を制御するブレーキ装置
とからなる射出装置の背圧制御装置。(2) An extension shaft that is integrally connected to the rear end of the screw, has a gear that applies rotational force to the screw, and whose shaft end is rotatably connected to the screw holding member, and a pair of extension shafts installed inside the haunong. The above-mentioned screw holding part/member is provided on the support shaft of the screw holding member so as to be freely movable forward and backward, and the backward movement of the screw, which is located at the rear of the screw holding member and moves together with the screw holding member directly or through another object, is converted into a rotational motion. A back pressure control device for an injection device, comprising a gear device for conversion, and a brake device that communicates with a shaft portion of the gear device and controls the rotational force of the shaft portion due to movement of a screw holding member.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6283582A JPS58179631A (en) | 1982-04-15 | 1982-04-15 | Controlling method and equipment of screw back pressure of injection apparatus |
| CA000412971A CA1196458A (en) | 1981-10-08 | 1982-10-06 | Injection molding machine |
| US06/512,135 US4540359A (en) | 1981-10-08 | 1982-10-07 | Injection molding machine |
| EP82902987A EP0090863B1 (en) | 1981-10-08 | 1982-10-07 | Injection molding apparatus |
| DE823249092T DE3249092T1 (en) | 1981-10-08 | 1982-10-07 | INJECTION MOLDING MACHINE |
| PCT/JP1982/000402 WO1983001224A1 (en) | 1981-10-08 | 1982-10-07 | Injection molding apparatus |
| EP86201955A EP0239682B1 (en) | 1981-10-08 | 1982-10-07 | Injection molding apparatus1 |
| GB08315631A GB2119307B (en) | 1981-10-08 | 1982-10-07 | Injection molding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6283582A JPS58179631A (en) | 1982-04-15 | 1982-04-15 | Controlling method and equipment of screw back pressure of injection apparatus |
Related Child Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11360182A Division JPS58179630A (en) | 1982-06-30 | 1982-06-30 | Injection molder |
| JP16087384A Division JPS60220723A (en) | 1984-07-31 | 1984-07-31 | Electrically operated injecting apparatus |
| JP8996189A Division JPH0248913A (en) | 1989-04-10 | 1989-04-10 | Motor-driven injection device |
| JP8996089A Division JPH0248912A (en) | 1989-04-10 | 1989-04-10 | Motor-driven injection device |
| JP8996289A Division JPH0248914A (en) | 1989-04-10 | 1989-04-10 | Motor-driven injection device |
| JP8996389A Division JPH0248915A (en) | 1989-04-10 | 1989-04-10 | Motor-driven injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58179631A true JPS58179631A (en) | 1983-10-20 |
| JPS6325934B2 JPS6325934B2 (en) | 1988-05-27 |
Family
ID=13211763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6283582A Granted JPS58179631A (en) | 1981-10-08 | 1982-04-15 | Controlling method and equipment of screw back pressure of injection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58179631A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174625A (en) * | 1984-01-31 | 1985-09-07 | Nissei Plastics Ind Co | Detecting method of injection force in motor-driven injection device |
| JPS60204306A (en) * | 1984-03-29 | 1985-10-15 | Toyoda Gosei Co Ltd | Injection molding machine |
| JPS60262616A (en) * | 1984-06-11 | 1985-12-26 | Fanuc Ltd | Kneading system in injection molding machine |
| JPS6119325A (en) * | 1984-07-07 | 1986-01-28 | Fanuc Ltd | Screw turning and injection mechanism in injection molding machine |
| JPS6119328A (en) * | 1984-07-05 | 1986-01-28 | Niigata Eng Co Ltd | Pressure controller in injection molding machine |
| JPS6131221A (en) * | 1984-07-24 | 1986-02-13 | Nissei Plastics Ind Co | Control of backpressure in injection molding machine |
| JPS6125127U (en) * | 1984-07-19 | 1986-02-14 | 株式会社日本製鋼所 | Electric injection device for injection molding machine |
| WO1986001456A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for maintaining pressure in an injection molding machine |
| WO1986001454A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for controlling the revolution of a screw in an injection molding machine |
| WO1986001455A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for controlling the speed of injection shaft of an injection molding machine |
| WO1986001768A1 (en) * | 1984-09-13 | 1986-03-27 | Fanuc Ltd | Nozzle touch mechanism |
| WO1986002592A1 (en) * | 1984-10-31 | 1986-05-09 | Fanuc Ltd | Monitoring device for an injection molding machine |
| WO1986002591A1 (en) * | 1984-10-31 | 1986-05-09 | Fanuc Ltd | Nozzle touching mechanism |
| WO1986003160A1 (en) * | 1984-11-24 | 1986-06-05 | Fanuc Ltd | Injecting/measuring mechanism in injection molding machine |
| JPS61152422A (en) * | 1984-12-27 | 1986-07-11 | Fanuc Ltd | Injection molding machine |
| JPS61249724A (en) * | 1985-04-30 | 1986-11-06 | Fanuc Ltd | Changeover control method for unit quantity of torque limiting value of servomotor for injection molding machine |
| JPS636825U (en) * | 1986-06-27 | 1988-01-18 | ||
| JPS636826U (en) * | 1986-06-27 | 1988-01-18 | ||
| JPH01153211U (en) * | 1988-04-14 | 1989-10-23 | ||
| JPH02182426A (en) * | 1989-01-09 | 1990-07-17 | Toyo Mach & Metal Co Ltd | Injection molding method |
| JPH0513723U (en) * | 1991-06-26 | 1993-02-23 | 株式会社新潟鐵工所 | Drive for injection molding machine |
| JPH09187849A (en) * | 1997-01-06 | 1997-07-22 | Fanuc Ltd | Moter-driven injection molding machine |
-
1982
- 1982-04-15 JP JP6283582A patent/JPS58179631A/en active Granted
Cited By (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174625A (en) * | 1984-01-31 | 1985-09-07 | Nissei Plastics Ind Co | Detecting method of injection force in motor-driven injection device |
| JPS60204306A (en) * | 1984-03-29 | 1985-10-15 | Toyoda Gosei Co Ltd | Injection molding machine |
| JPS60262616A (en) * | 1984-06-11 | 1985-12-26 | Fanuc Ltd | Kneading system in injection molding machine |
| JPH02174B2 (en) * | 1984-06-11 | 1990-01-05 | Fanuc Ltd | |
| JPS6119328A (en) * | 1984-07-05 | 1986-01-28 | Niigata Eng Co Ltd | Pressure controller in injection molding machine |
| JPH0421575B2 (en) * | 1984-07-05 | 1992-04-10 | Niigata Engineering Co Ltd | |
| JPS6119325A (en) * | 1984-07-07 | 1986-01-28 | Fanuc Ltd | Screw turning and injection mechanism in injection molding machine |
| JPS6125127U (en) * | 1984-07-19 | 1986-02-14 | 株式会社日本製鋼所 | Electric injection device for injection molding machine |
| JPH0428533B2 (en) * | 1984-07-24 | 1992-05-14 | Nissei Plastics Ind Co | |
| JPS6131221A (en) * | 1984-07-24 | 1986-02-13 | Nissei Plastics Ind Co | Control of backpressure in injection molding machine |
| WO1986001455A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for controlling the speed of injection shaft of an injection molding machine |
| JPH0477653B2 (en) * | 1984-09-04 | 1992-12-09 | Fanuc Ltd | |
| JPS6161818A (en) * | 1984-09-04 | 1986-03-29 | Fanuc Ltd | Control system of rotation of screw in injection molding machine |
| WO1986001454A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for controlling the revolution of a screw in an injection molding machine |
| WO1986001456A1 (en) * | 1984-09-04 | 1986-03-13 | Fanuc Ltd | System for maintaining pressure in an injection molding machine |
| US4734025A (en) * | 1984-09-04 | 1988-03-29 | Fanuc Ltd. | Injection molding machine dwell control system |
| US4718841A (en) * | 1984-09-04 | 1988-01-12 | Fanuc Ltd. | Rotation control system for screw of injection molding machine |
| US4676730A (en) * | 1984-09-13 | 1987-06-30 | Fanuc Ltd. | Nozzle touch mechanism |
| WO1986001768A1 (en) * | 1984-09-13 | 1986-03-27 | Fanuc Ltd | Nozzle touch mechanism |
| WO1986002591A1 (en) * | 1984-10-31 | 1986-05-09 | Fanuc Ltd | Nozzle touching mechanism |
| WO1986002592A1 (en) * | 1984-10-31 | 1986-05-09 | Fanuc Ltd | Monitoring device for an injection molding machine |
| US4718840A (en) * | 1984-11-24 | 1988-01-12 | Fanuc Ltd. | Injection/measurement mechanism of injection molding machine |
| JPS61125823A (en) * | 1984-11-24 | 1986-06-13 | Fanuc Ltd | Extruding and weighing mechanism in extruding machine |
| WO1986003160A1 (en) * | 1984-11-24 | 1986-06-05 | Fanuc Ltd | Injecting/measuring mechanism in injection molding machine |
| JPS61152422A (en) * | 1984-12-27 | 1986-07-11 | Fanuc Ltd | Injection molding machine |
| JPH0439411B2 (en) * | 1984-12-27 | 1992-06-29 | ||
| JPS61249724A (en) * | 1985-04-30 | 1986-11-06 | Fanuc Ltd | Changeover control method for unit quantity of torque limiting value of servomotor for injection molding machine |
| JPH0253218B2 (en) * | 1985-04-30 | 1990-11-16 | Fanuc Ltd | |
| JPS636826U (en) * | 1986-06-27 | 1988-01-18 | ||
| JPH043780Y2 (en) * | 1986-06-27 | 1992-02-05 | ||
| JPS636825U (en) * | 1986-06-27 | 1988-01-18 | ||
| JPH01153211U (en) * | 1988-04-14 | 1989-10-23 | ||
| JPH0538890Y2 (en) * | 1988-04-14 | 1993-10-01 | ||
| JPH02182426A (en) * | 1989-01-09 | 1990-07-17 | Toyo Mach & Metal Co Ltd | Injection molding method |
| JPH0513723U (en) * | 1991-06-26 | 1993-02-23 | 株式会社新潟鐵工所 | Drive for injection molding machine |
| JPH09187849A (en) * | 1997-01-06 | 1997-07-22 | Fanuc Ltd | Moter-driven injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6325934B2 (en) | 1988-05-27 |
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