JPS60129230A - Screw type injector - Google Patents

Screw type injector

Info

Publication number
JPS60129230A
JPS60129230A JP23717583A JP23717583A JPS60129230A JP S60129230 A JPS60129230 A JP S60129230A JP 23717583 A JP23717583 A JP 23717583A JP 23717583 A JP23717583 A JP 23717583A JP S60129230 A JPS60129230 A JP S60129230A
Authority
JP
Japan
Prior art keywords
screw
rotor
motor
injection
stator
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
JP23717583A
Other languages
Japanese (ja)
Other versions
JPH0342566B2 (en
Inventor
Keiichi Harano
原野　慶一
Takeshi Fukuroi
袋井　武志
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Priority to JP23717583A priority Critical patent/JPS60129230A/en
Publication of JPS60129230A publication Critical patent/JPS60129230A/en
Publication of JPH0342566B2 publication Critical patent/JPH0342566B2/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
    • B29C45/46—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a screw type injector capable of simply controlling the injection speeds without the needs for oil-pressure cylinder and valves by using a system in which a screw is advanced by operating a motor consisting of a rotor and a stator. CONSTITUTION:A motor M is made up of a rotor 11 in which a coil is buried in the periphery of a nut to be screwed with the rear screw of a screw shaft 7 and a stator 16 with a coil surrounding the periphery of the rotor 11. By varying the value of current to be sent to the motor M, the advancing speed of the screw 8 is varied and the speed of injection is simply controlled.

Description

【発明の詳細な説明】 産業上の利用分野と従来技術 本発明は、スクリュ一式射出装置に関するものである。[Detailed description of the invention] Industrial application fields and conventional technology The present invention relates to a complete screw injection device.

従来の射出成形機のスクリュ一式割出装置においては、
溶融状態の材料を射出装置後部の油圧シリンダによりス
クリューに射出力が加えられて射出が行なわれていたた
め、油圧ポンプや弁等を必要とし、構成が複雑となって
いた。In the conventional injection molding machine screw set indexing device,
Injection of the molten material was carried out by applying injection force to the screw using a hydraulic cylinder at the rear of the injection device, which required hydraulic pumps, valves, etc., making the structure complicated.

そして、油圧により射出工程を制御しなくてはならない
ことから、その射出速度の制御も複雑で回置Ｕであった
。Since the injection process must be controlled by hydraulic pressure, control of the injection speed is also complicated and requires rotation.

また、モータにより作動する射出装置も開発されている
が、本発明はその改良である。Injection devices operated by motors have also been developed, and the present invention is an improvement thereto.

発明の目的 本発明の目的は、従来の油圧シリンダを使用するスクリ
ュ一式射出装置に較べて構成が簡単で、射出速度の制御
も簡単に行うことが可能で、操作も容易に行うことが可
能なスクリュ一式射出装置を提供することにある。Purpose of the Invention The purpose of the present invention is to provide a screw injection device that has a simpler configuration than a conventional screw injection device using a hydraulic cylinder, can easily control the injection speed, and can be easily operated. The purpose of the present invention is to provide a complete screw injection device.

発明の構成 本発明のスクリュ一式射出装置は、創出成形機のスクリ
ュ一式射出装置において、先端にスクリューを有し、後
部にネジを有するスクリューシャフトと、外周にコイル
を埋め込まれ前記ネジと螺合するナツトからなるロータ
と、前記ロータの外周を包囲して設けたコイルからなる
ステータとよりなり、前記ロータと前記ステータでモー
タを形成し、前記モータを作動させることにより前記ス
クリューを前進させることを特徴とする構成を有するも
のである。Structure of the Invention The screw set injection device of the present invention is a screw set injection device for a creative molding machine, and includes a screw shaft having a screw at the tip and a screw at the rear, and a coil embedded in the outer periphery and screwed into the screw. The rotor is composed of a nut and a stator is a coil surrounding the outer periphery of the rotor. The rotor and the stator form a motor, and the screw is moved forward by operating the motor. It has the following configuration.

実施例 以下、本発明の実施例を図面に基づいて詳細に説明する
と、 図において、１はスクリュ一式射出装置の基盤であり、
内部には軸方向に一側より間口部２と、該開口部２に隣
接して係止部３と、前記開口部２に隣接して支持部５が
形成されており、前記支持部５にはブッシング６が装着
されている。７はスクリューシャフトであり、一端には
スクリュー８が設けられ、前記スクリュー８の先端には
スクリューへラド９が設けられ、後部にはおねじである
ボールスクリュー１Ｏが設けられ、後端寄りを上記ブッ
シング６により回動自在に軸支されている。Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In the figures, 1 is the base of a screw set injection device;
Inside, from one side in the axial direction, a frontage part 2, a locking part 3 adjacent to the opening part 2, and a support part 5 adjacent to the opening part 2 are formed. Bushing 6 is installed. 7 is a screw shaft, a screw 8 is provided at one end, a screw rad 9 is provided at the tip of the screw 8, a male threaded ball screw 10 is provided at the rear end, and the bushing is attached near the rear end. 6, it is rotatably supported.

１１はボールスクリュー１０に螺合するナツトからなる
ロータであり、外周には］イル１２が一体に埋め込まれ
て設（プられ、両側をポールベアリング１３．１３’　
により回動自在に支持され、ボールベアリング１３．１
３’　は、上記係止部３及び後述のハウジング１４の係
止部４に嵌合されている。１５はハ１クジング１４に設
けられたコイルで、ステータ１６を構成しており、上記
ナツトからなるロータ１１とでモータＭを構成している
。上記ハウジング１４には、ロータ１１を固定覆るベア
リング１３′が係止部４に嵌合され、さらに、通孔部１
７が設けられており、上記スクリューシャフト７の支持
部１９にはブッシング２０が装着されている。上記通孔
部１７及び上記基盤１の開口部２が存在するため、スク
リューシャフト７は図中左右に移動できるようになって
いる。Reference numeral 11 denotes a rotor consisting of a nut screwed onto a ball screw 10, and a rotor 12 is integrally embedded in the outer periphery, and pole bearings 13 and 13' are mounted on both sides.
It is rotatably supported by a ball bearing 13.1.
3' is fitted into the locking portion 3 and the locking portion 4 of the housing 14, which will be described later. Reference numeral 15 denotes a coil provided on the housing 14, which constitutes a stator 16, and constitutes a motor M together with the rotor 11 made of the above-mentioned nut. A bearing 13' that fixes and covers the rotor 11 is fitted into the locking part 4 of the housing 14, and a through hole part 1 is fitted into the housing 14.
7, and a bushing 20 is attached to the support portion 19 of the screw shaft 7. Since the through hole 17 and the opening 2 of the base 1 are present, the screw shaft 7 can move left and right in the figure.

次に、上記実施例について作用を説明すると、上記モー
タＭに電力を供給すると、ロータ１６はボールベアリン
グ１３．１３’を介して回転し、そのため、ロータ１６
のナツトが回転し、該ナツトと螺合するボールスクリュ
ー１Ｏによりスクリューシャフト７は図面へ方向に前進
し、材料を金型へ射出する。Next, to explain the operation of the above embodiment, when power is supplied to the motor M, the rotor 16 rotates via the ball bearings 13, 13', so that the rotor 16
The nut rotates, and the ball screw 1O screwed into the nut causes the screw shaft 7 to move forward in the direction of the drawing, injecting the material into the mold.

上記モータはサーボモータで構成し、射出行程を制御し
てもよく、また、汎用モータを使用する場合には、位置
検出器を設けて制御ｔｌｌ′１１１′る必要がある。The motor may be a servo motor to control the injection stroke, and if a general-purpose motor is used, it is necessary to provide a position detector for control.

発明の効果 以上に述べたように、本発明のスクリュ一式射出装置は
、射出成形機のスクリュ一式射出装置において、先端に
スクリューを有し、後部にネジを有するスクリューシャ
フトと、外周にコイル・を埋め込まれ前記ネジと螺合す
るナツトからなる０−夕と、前記ロータの外周を包囲し
て設けたコイルからなるステータとよりなり、前詰ロー
タと前記ステータでモータを形成し、前記モータを作動
させることににり前記スクリューを前進させる構成を有
するため、従来の油圧シリンダを使用するスクリュ一式
射出装置に較べて油圧シリンダや弁等を必要とせずに構
成が簡単で、モータに送られる電流値を変えることによ
り、射出速度の制御も簡単に行うことができ、操作も容
易に行うことができる。Effects of the Invention As described above, the screw set injection device of the present invention is a screw set injection device for an injection molding machine, which has a screw shaft having a screw at the tip and a screw at the rear, and a coil on the outer periphery. The motor is comprised of a nut which is embedded and is screwed into the screw, and a stator which is a coil that surrounds the outer periphery of the rotor. Compared to conventional screw injection equipment that uses a hydraulic cylinder, the structure is simpler because it does not require a hydraulic cylinder or valve, and the current value sent to the motor is lower. By changing the injection speed, the injection speed can be easily controlled and the operation can be performed easily.

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

図は、本発明の実施例における装置の一部切断正面図で
ある。 １・・・基盤、２・・・開口部、３，４・・・係止部、
５゜１９・・・支持部、６，２Ｏ・・・ブッシング、７
・・・スクリューシャフト、８・・・スクリュー、９・
・・スクリューヘッド、１０・・・ボールスクリュー、
１１・・・ロータ、１２．１５・・・コイル、１３．１
３’・・・ポールベアリング、１４・・・ハウジング、
１６・・・ステーク、１７・・・通孔部、Ｍ・・・モー
タ。 特許出願人 ファナック　株式会社The figure is a partially cutaway front view of an apparatus in an embodiment of the invention. 1... Base, 2... Opening, 3, 4... Locking part,
5゜19...Support part, 6,2O...Bushing, 7
...Screw shaft, 8...Screw, 9.
...Screw head, 10...Ball screw,
11... Rotor, 12.15... Coil, 13.1
3'...Pole bearing, 14...Housing,
16...Stake, 17...Through hole, M...Motor. Patent applicant FANUC Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 射出成形機のスクリュ一式射出装置において、先端にス
クリューを有し、後部にネジを有するスクリューシャフ
トと、外周にコイルを埋め込まれた前記ネジと螺合する
ナツトからなるロータと、前記ロータの外周を包囲して
設けたコイルからなるステータとよりなり、前記ロータ
と前記ステータでモータを形成し、前記モータを作動さ
せることににり前記スクリューを前進させることを特徴
とするスクリュ一式射出装置。A screw set injection device for an injection molding machine includes a screw shaft having a screw at the tip and a screw at the rear, a rotor consisting of a nut screwed into the screw with a coil embedded in the outer periphery, and an outer periphery of the rotor. 1. A complete screw injection device comprising a stator including a coil disposed surrounding the rotor, the rotor and the stator forming a motor, and operating the motor to move the screw forward.
JP23717583A 1983-12-17 1983-12-17 Screw type injector Granted JPS60129230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23717583A JPS60129230A (en) 1983-12-17 1983-12-17 Screw type injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23717583A JPS60129230A (en) 1983-12-17 1983-12-17 Screw type injector

Publications (2)

Publication Number Publication Date
JPS60129230A true JPS60129230A (en) 1985-07-10
JPH0342566B2 JPH0342566B2 (en) 1991-06-27

Family

ID=17011483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23717583A Granted JPS60129230A (en) 1983-12-17 1983-12-17 Screw type injector

Country Status (1)

Country Link
JP (1) JPS60129230A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724944A1 (en) * 1995-02-03 1996-08-07 Sumitomo Heavy Industries, Ltd. Ejector apparatus
US5804224A (en) * 1994-12-28 1998-09-08 Fanuc Ltd Driving apparatus for electrically-operated injection molding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5804224A (en) * 1994-12-28 1998-09-08 Fanuc Ltd Driving apparatus for electrically-operated injection molding machine
EP0724944A1 (en) * 1995-02-03 1996-08-07 Sumitomo Heavy Industries, Ltd. Ejector apparatus
CN1059378C (en) * 1995-02-03 2000-12-13 住友重机械工业株式会社 Ejector apparatus

Also Published As

Publication number Publication date
JPH0342566B2 (en) 1991-06-27

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