JPH0342566B2 - - Google Patents
Info
- Publication number
- JPH0342566B2 JPH0342566B2 JP23717583A JP23717583A JPH0342566B2 JP H0342566 B2 JPH0342566 B2 JP H0342566B2 JP 23717583 A JP23717583 A JP 23717583A JP 23717583 A JP23717583 A JP 23717583A JP H0342566 B2 JPH0342566 B2 JP H0342566B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- rotor
- motor
- injection device
- type injection
- 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
Links
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
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)
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、スクリユー式射出装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application and Prior Art The present invention relates to a screw type injection device.
従来の射出成形機のスクリユー式射出装置にお
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ユ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、構造が複雑となつていた。 In conventional screw-type injection devices of injection molding machines, injection force was applied to the screw by a hydraulic cylinder at the rear of the injection device to inject the molten material, which required hydraulic pumps, valves, etc. was becoming 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
困難であつた。 Since the injection process must be controlled by hydraulic pressure, controlling the injection speed is also complicated and difficult.
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
るスクリユー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なうことが可能で、操
作も容易に行うことが可能なスクリユー式射出装
置を提供することにある。Purpose of the Invention The purpose of the present invention is to have a simpler configuration than a conventional screw type injection device using a hydraulic cylinder.
It is an object of the present invention to provide a screw type injection device whose injection speed can be easily controlled and whose operation can be easily performed.
発明の構成
本発明のスクリユー式射出装置は、射出成形機
のスクリユー式射出装置において、先端にスクリ
ユーを有し、後部にネジを有するスクリユーシヤ
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
クリユ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 type injection device of the present invention is a screw type injection device for an injection molding machine, and includes a screw shaft having a screw at the tip and a screw at the rear, and a screw shaft having a coil embedded in the outer periphery and screwed with the screw. A motor is formed by the rotor and the stator, and the screw is moved forward by operating the motor. It has a characteristic 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はスクリユー式射出装置の基盤
であり、内部には軸方法に一側より開口部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にはブツシング６が装着されている。７はス
クリユーシヤフトであり、一端にはスクリユー８
が設けられ、前記スクリユー８の先端にはスクリ
ユーヘツド９が設けられ、後部にはおねじである
ボールスクリユー１０が設けられ、後端寄りを上
記ブツシング６により回動自在に軸支されてい
る。１１はボールスクリユー１０に螺合するナツ
トからなるロータであり、外周にはコイル１２が
一体に埋め込まれ設けられ、両側をボールベアリ
ング１３，１３′により回動自在に支持され、ボ
ールベアリング１３，１３′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はハウジング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を固定する
ベアリング１３′が係止部４に嵌合され、さらに、
通孔部１７が設けられており、上記スクリユーシ
ヤフト７の支持部１９にはブツシング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、スクリユーシヤフト７は
図中左右に移動できるようになつている。Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In the drawings, reference numeral 1 denotes a base of a screw-type injection device, and inside there is an opening 2 from one side along the axis.
a locking part 3 adjacent to the opening 2; and a locking part 3 adjacent to the opening 2.
A support portion 5 is formed adjacent to the support portion 5, and a bushing 6 is attached to the support portion 5. 7 is a screw shaft, and a screw 8 is attached to one end.
A screw head 9 is provided at the tip of the screw 8, and a male-threaded ball screw 10 is provided at the rear, and the rear end is rotatably supported by the bushing 6. . Reference numeral 11 denotes a rotor consisting of a nut that is screwed onto the ball screw 10. A coil 12 is integrally embedded in the outer periphery of the rotor, and the rotor 11 is rotatably supported by ball bearings 13 and 13' on both sides. 13' 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 in the housing 14, which constitutes a stator 16, and which together with the rotor 11 constituted by the above-mentioned nut constitute a motor M.
A bearing 13' for fixing the rotor 11 is fitted into the locking part 4 in the housing 14, and further,
A through hole portion 17 is provided, and a bushing 20 is attached to the support portion 19 of the screw shaft 7. Because of the presence of the through hole 17 and the opening 2 of the base 1, 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ユー１０によりスクリ
ユーシヤフト７は図面Ａ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'.
Therefore, the nut of the rotor 16 rotates, and the ball screw 10 screwed into the nut causes the screw shaft 7 to move forward in the direction A in the drawing, injecting 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する必要があ
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、本発明のスクリユー式射
出装置は、射出成形機のスクリユー式射出装置に
おいて、先端にスクリユーを有し、後部にネジを
有するスクリユーシヤフトと、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ユ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
クリユー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 type injection device of the present invention is a screw type injection device for an injection molding machine, which includes a screw shaft having a screw at the tip and a screw at the rear, and a coil around the outer periphery. A motor is formed by a rotor comprising a nut embedded and screwed into the screw, and a stator comprising a coil surrounding the outer periphery of the rotor, and the motor is operated. Because it has a configuration that advances the screw, the configuration is simpler as it does not require a hydraulic cylinder or valve, compared to a conventional screw type injection device that uses a hydraulic cylinder, and by changing the current value sent to the motor, The injection speed can be easily controlled and the operation can be performed easily.
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、６，２０……ブツシン
グ、７……スクリユーシヤフト、８……スクリユ
ー、９……スクリユーヘツド、１０……ボールス
クリユー、１１……ロータ、１２，１５……コイ
ル、１３，１３′……ボールベアリング、１４…
…ハウジング、１６……ステータ、１７……通孔
部、Ｍ……モータ。
The figure is a partially cutaway front view of an apparatus in an embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Base, 2... Opening, 3, 4... Locking part, 5, 19... Support part, 6, 20... Bushing, 7... Screw shaft, 8... Screw, 9... Screw head, 10... Ball screw, 11... Rotor, 12, 15... Coil, 13, 13'... Ball bearing, 14...
...Housing, 16...Stator, 17...Through hole, M...Motor.
Claims (1)
て、先端にスクリユーを有し、後部にネジを有す
るスクリユーシヤフトと、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
ることにより前記スクリユーを前進させることを
特徴とするスクリユー式射出装置。1. A screw type injection device for an injection molding machine, which 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 having a coil embedded in the outer periphery, and a screw shaft having a screw at the tip and a screw at the rear; A screw-type injection device comprising a stator comprising a coil surrounding the outer periphery, the rotor and the stator forming a motor, and operating the motor to move the screw forward.
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 JPS60129230A (en) | 1985-07-10 |
| JPH0342566B2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08183079A (en) * | 1994-12-28 | 1996-07-16 | Fanuc Ltd | Movable member-propelling mechanism of motor-driven injection molding machine |
| JP2838978B2 (en) * | 1995-02-03 | 1998-12-16 | 住友重機械工業株式会社 | Ejector device |
-
1983
- 1983-12-17 JP JP23717583A patent/JPS60129230A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60129230A (en) | 1985-07-10 |
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