JPS60242030A - Plastic molding device - Google Patents

Plastic molding device

Info

Publication number
JPS60242030A
JPS60242030A JP9943484A JP9943484A JPS60242030A JP S60242030 A JPS60242030 A JP S60242030A JP 9943484 A JP9943484 A JP 9943484A JP 9943484 A JP9943484 A JP 9943484A JP S60242030 A JPS60242030 A JP S60242030A
Authority
JP
Japan
Prior art keywords
mold
cylinder
movable
fixed
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.)
Pending
Application number
JP9943484A
Other languages
Japanese (ja)
Inventor
Tadayoshi Uehara
只好 上原
Hirohiko Oyamada
裕彦 小山田
Tatsuji Nakagawa
中川　達二
Isamu Komatsu
勇 小松
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Priority to JP9943484A priority Critical patent/JPS60242030A/en
Publication of JPS60242030A publication Critical patent/JPS60242030A/en
Pending 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
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • B29C2045/563—Enlarging the mould cavity during injection

Landscapes

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

Abstract

PURPOSE:To provide the title device ensuring an accurate injection quantity, wherein a cylinder device is provided between a fixed plate for a fixed metallic mold and a movable plate for a movable metallic mold, a preload is exerted on a frame by the cylinder device and a main cylinder, and injection is performed simultaneously with achieving a predetermined mold opening quantity. CONSTITUTION:While pushing back the movable mold 6 pulsewise by supplying a hydraulic fluid into an auxiliary cylinder 10, a hydraulic fluid is supplied into the cylinder device 17, and a resin is injected. In this case, when a predetermined mold opening quantity S is detected by a position sensor 13, a servo valve 16 is operated to close a supplying port G of the cylinder device 17. After a predetermined lapse of time, with the hydraulic fluid supplied into a supplying port A of the main cylinder 8, the mold 6 is moved rightward to set the mold opening quantity S to 0, and the resin is molded. Accordingly, since the load on the frame is made to be the sum of the force exerted by the cylinder 10 and the force arising from the injection, deformation of the frame is stabilized.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明はプラスチックを射出成形する場合に射出量を一
定にすると共に型に圧縮力を加えて製品精度を向上させ
るプラスチｙり成形装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plastic molding device that improves product precision by keeping the injection amount constant and applying compressive force to the mold when injection molding plastics. It is.

「従来の技術Ｊ 従来この種の出願は多数されているが、その１例として
特願昭４７−２９１１（特開昭４８−７２２５９）を挙
げることができる。この場合、第２図に示すように、成
形シリンダ装置である主シリンダ（８）に低圧（Ｐｌ）
をかけておき射出し、射出圧により所望の型開きをさせ
、その後生／す／ダ（８）に高圧をかけて型開き量Ｓを
０として圧縮成形させていた。``Prior Art J'' There have been many applications of this type in the past, and one example is Japanese Patent Application No. 47-2911 (Japanese Unexamined Patent Publication No. 48-72259). In addition, low pressure (Pl) is applied to the main cylinder (8), which is a forming cylinder device.
The mold was then injected, the injection pressure was used to open the mold as desired, and then high pressure was applied to the raw/solder (8) to set the mold opening amount S to 0 and compression molding was performed.

「発明が解決しようとする問題点」 従来例においては、型開きは比較的小さな射出力（射出
圧によシ係合した１対の型が互に離隔する方向に受ける
力〕により行なわれるため型開き量は不安定なものとな
シ、その結果射出量のバラツキが生じ、高品質の成形品
は得られなかった。"Problems to be Solved by the Invention" In the conventional example, the mold opening is performed by a relatively small injection force (force applied by the injection pressure in the direction that a pair of molds engaged with each other move away from each other). The opening amount of the mold was unstable, and as a result, the injection amount varied, making it impossible to obtain a high-quality molded product.

「問題点を解決するための手段及び作用」前記欠点は、
成形機のフレームにかかる力が比較的小さいから、フレ
ーム部の変形が不安定なためであることに着目して、型
が固定されている固定板と移動板との間にシリンダ装置
を介在させ、このシリンダ装置と主シリンダ（８）とに
よりフレームにプリロードをかけた状態で、一定の型開
きを行なうと同時に射出する構成とした。"Means and actions for solving the problems" The above drawbacks are:
Focusing on the fact that the deformation of the frame is unstable because the force applied to the frame of the molding machine is relatively small, we inserted a cylinder device between the fixed plate to which the mold is fixed and the movable plate. With the frame being preloaded by this cylinder device and the main cylinder (8), the mold was opened at a certain level and at the same time the injection was performed.

「実施例」 第１図において、本発明のグラスチック成形装置（１）
の構造を示している。該装置（１）は固定板（２）と主
シリンダ（８）を一定間隔に保持するタイロッドｕｚを
有している。固定板（２）には固定金型（３）が固定さ
れている。固定金型（３）の中心部には溶融樹脂を射出
する穴（４）が設けられ溶融樹脂を供給する回路Ｅが接
続されている。この回路（Ｅｌは慣用のグラスチック射
出装置に連通している。この射出装置の右端には射出用
のシリンダ装置（１ηが設けである。シリンダ装置ａη
には供給口（Ｆｌ　（Ｇｌが設けてあシ、両供給口はサ
ーボバルブ（１６１に連通している。供給口（Ｇ）に圧
油が供給されるとピストンは左方に移動し、溶融したグ
ラスチックは射出される構成になっている。``Example'' In FIG. 1, a glass molding apparatus (1) of the present invention is shown.
It shows the structure of The device (1) has a tie rod uz that holds a fixed plate (2) and a main cylinder (8) at a constant distance. A fixed mold (3) is fixed to the fixed plate (2). A hole (4) for injecting molten resin is provided in the center of the fixed mold (3), and a circuit E for supplying the molten resin is connected thereto. This circuit (El is connected to a conventional plastic injection device. A cylinder device (1η) for injection is provided at the right end of this injection device. Cylinder device aη
is provided with a supply port (Fl), and both supply ports communicate with a servo valve (161). When pressure oil is supplied to the supply port (G), the piston moves to the left and melts. The plastic is configured to be injected.

固定板（２）と対向して運動自在にタイロッドｕ２１に
案内された移動板ｆ５１　Ｋ　Ｖｉ固定金型（３）の突
部が嵌入する凹部を有する移動金型（６）が固定されて
いる。固定金型（３）の突部と移動金型（６）の凹部と
によりキャビティ（７）を形成している。移動板（５）
にはこれを駆動する主シリンダ（８）に適合するピスト
ン（９）が連結されている。主シリンダ（８）には圧力
流体の供給口Ａ及びＢが設けられている。これら供給口
Ａ、　Ｂけサーボバルブｆｉ４１に連通している。供給
口Ａに圧力流体を供給すると移動金型（６）を固定金型
（３）に向けて駆動し、供給口Ｂに供給すると逆に動作
する。また固定板（２）と移動板（５）との対向する面
には、固定板（２）に補助シリンダ０ωを所要数設け、
これに適合するピストンａＤが移動板（５１に固定され
ている。補助シリンダａωにけ圧力流体の供給口Ｃ及び
Ｄが設けられている。ξれらの供給口Ｃ，Ｄは一定量の
圧油をパルス状に吐出する慣用のステップバルブに連通
している。供給口りに圧力流体を供給すると移動金型（
６）を固定金型（３）から離して金型を開かせ、供給口
Ｃに供給すると逆に動作させる。A movable mold (6) is fixed that faces the fixed plate (2) and has a recess into which the protrusion of the movable plate f51K Vi fixed mold (3) is fitted, which is movably guided by the tie rod u21. A cavity (7) is formed by the protrusion of the fixed mold (3) and the recess of the movable mold (6). Moving board (5)
A piston (9) is connected to the main cylinder (8) which drives the piston (9). The main cylinder (8) is provided with pressure fluid supply ports A and B. These supply ports A and B communicate with the servo valve fi41. When pressure fluid is supplied to the supply port A, the movable mold (6) is driven toward the fixed mold (3), and when it is supplied to the supply port B, the movement is reversed. Further, on the opposing surfaces of the fixed plate (2) and the movable plate (5), a required number of auxiliary cylinders 0ω are provided on the fixed plate (2),
A piston aD compatible with this is fixed to a movable plate (51).The auxiliary cylinder aω is provided with pressure fluid supply ports C and D. It communicates with a conventional step valve that discharges oil in pulses.When pressurized fluid is supplied to the supply port, the moving mold (
6) is separated from the fixed mold (3) to open the mold, and when it is supplied to the supply port C, it is operated in reverse.

前記移動板（５）と固定板（２１との間には両者の位置
関係、すなわち、型開き量を検出する位置検出センサθ
３が介在している。A position detection sensor θ is provided between the movable plate (5) and the fixed plate (21) to detect the positional relationship between the two, that is, the amount of mold opening.
3 is intervening.

次に作用について述べる。主シリンダ（８）の供給口Ａ
に圧力流体を供給して固定金型（３）と移動金型（６）
とを閉じる（Ｓ＝０）。Next, we will discuss the effect. Main cylinder (8) supply port A
A fixed mold (3) and a movable mold (6) are supplied with pressure fluid to
and close (S=0).

補助７リンダＱｆ）の供給口りに圧力流体を供給して移
動金型（６）をパルス状に押し返えしながらシリンダ装
置Ｑ７１の供給口ｆＧ）　Ｋ圧力流体を供給することに
より射出させる。型開き量（Ｓｌが所定の値に達したこ
とを位置検出センサθ３が検出すると、その信号によシ
サーボバルブｏ６１が作動しシリンダ装置０ηの供給口
（Ｇ）は閉鎖され、一定時間後（固定金型（３）の穴（
４）部のプラスチックが固形化する迄の時間をタイマに
セットしておく）主シリンダ（８）の供給口（ＡＲＫ圧
力流体が供給され、その結果、移動金型（６）は右方に
移動し、型開き量（Ｓｌは０となり、グラスチックは成
形される。その後、成形品の温度が金型の温度になる迄
主シリンダ（８）の油圧は保圧される。（タイマ又は温
センサを使用する）最後に成形品は主シリンダ（８）の
作用で両型を開いた後取り出される。Pressure fluid is supplied to the supply port of the auxiliary 7 cylinder Qf) to push back the movable mold (6) in a pulsed manner while supplying pressure fluid to the supply port fG) of the cylinder device Q71 for injection. When the position detection sensor θ3 detects that the mold opening amount (Sl) has reached a predetermined value, the servo valve o61 is actuated based on the signal, the supply port (G) of the cylinder device 0η is closed, and after a certain period of time (fixed metal Hole in mold (3) (
4) Set the time until the plastic solidifies in the main cylinder (8) supply port (ARK pressure fluid is supplied, and as a result, the movable mold (6) moves to the right. Then, the mold opening amount (Sl becomes 0, and the plastic is molded. After that, the oil pressure of the main cylinder (8) is maintained until the temperature of the molded product reaches the temperature of the mold. (Timer or temperature sensor) Finally, the molded product is removed after opening both molds under the action of the main cylinder (8).

前述のステップパルプａ９は、型開きの際、ピストン（
９）を確実Ｋ（いわゆるステックを防止して）左方に移
動させるためにはパルス状に圧油を吐出させる方がよい
という意味で使用されている。The above-mentioned step pulp a9 has a piston (
9) is used to mean that in order to reliably move K (to prevent so-called sticking) to the left, it is better to discharge pressure oil in a pulsed manner.

「発明の効果」 本発明によれば、従来フレームにかかる荷重が射出によ
る力だけであったものを、補助７リンダ０（１１の力と
射出による力との和にしたためフレームの変形が安定し
、型開き量の制御が正確にできるようＫなった。したが
って、射出量を正確にでき高品質の成形品が得られるよ
うＫなった。"Effects of the Invention" According to the present invention, the deformation of the frame is stabilized because the conventional load applied to the frame is the sum of the force due to injection and the force due to injection from the auxiliary 7 cylinders. The mold opening amount can now be controlled accurately.Therefore, the injection amount can be accurately controlled and high quality molded products can be obtained.

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

第１図は実施例の縦断面図、 第２図は従来例の説明図である。 １はプラスチック成形装置、２は固定板、３は固定金型
、４は穴、５は移動板、６は移動金型、７はキャピテイ
、８は主シリンダ、９はピストン、１０は補助シリンダ
、１１はピストン、１２はタイロッド、１３は位置検出
センサ、１４はサーボパルプ、１５はステップパルプ、
１６はサーボパルプ、１７は／リング装置 である。 特許出願人　アイダエンジニアリング株式会社代表者　
会　１）啓之助 手続補正書（自発） 昭和５９年５月３０日 特許庁長官　若　杉　和　夫　殿 ５　メー〇アフβＫ ］、事件の表示　昭和５９年５月１７日付提出の特許願
２、・発明の名称　プラスチック成形装置３゜補正をす
る者 事件との関係　特許出願人 柱　所　〒２２９　神奈川県相模原市大山町２番１０号
アイダエンジニアリング株式会社 ４　補正の対象 別紙 １　明細書第７頁１行目に「（タイマ又は温センサを使
用する）」とあるのを「タイマ又は温度センサ及び圧力
センサを使用する」と訂正します。 ２、明細書第７頁３行目の後に「なお、Ｅ部近傍に慣用
の逆流防止弁封のノズルを組込んだ場合は前述の説明に
おいて、作動ノリンダ装置０ηの供給口ｆＧｌが閉鎖さ
れた後、ただちに（一定時間後でなく）主シリンダ（８
）の供給口開に圧力流体が供給される。」を挿入いたし
ます。 特許出願人　アイダエンジニアリング株式会社代表者　
会　１）啓之助FIG. 1 is a longitudinal sectional view of the embodiment, and FIG. 2 is an explanatory diagram of the conventional example. 1 is a plastic molding device, 2 is a fixed plate, 3 is a fixed mold, 4 is a hole, 5 is a movable plate, 6 is a movable mold, 7 is a capacity, 8 is a main cylinder, 9 is a piston, 10 is an auxiliary cylinder, 11 is a piston, 12 is a tie rod, 13 is a position detection sensor, 14 is a servo pulp, 15 is a step pulp,
16 is a servo pulp, and 17 is a ring device. Patent applicant Representative of AIDA ENGINEERING Co., Ltd.
1) Written amendment to Keinosuke procedure (spontaneous) May 30, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 5 May 〇 af βK ], Indication of case Patent application 2 filed on May 17, 1988. Title of the invention Relationship to the plastic molding device 3° amendment case Patent applicant Location AIDA Engineering Co., Ltd. 2-10 Oyama-cho, Sagamihara-shi, Kanagawa 229 4 Subject of amendment Attachment 1 Specification, page 7, line 1 "(Use a timer or temperature sensor)" has been corrected to "Use a timer or temperature sensor and pressure sensor." 2. After the 3rd line of page 7 of the specification: ``In addition, if a conventional check valve sealing nozzle is installed near section E, the supply port fGl of the operating nolinder device 0η is closed in the above explanation. immediately (not after a certain period of time) after the main cylinder (8
Pressure fluid is supplied to the supply port opening of ). ” will be inserted. Patent applicant Representative of AIDA ENGINEERING Co., Ltd.
Meeting 1) Keinosuke

Claims (1)

【特許請求の範囲】[Claims] 溶融樹脂を射出１．て圧縮成形する装置において、固定
金型を固定した固定板を設けると共に、これと対向して
移動自在の移動金型を固定した移動板を設け、該移動板
をそのピストンに連結した型締め用の主シリンダを設け
、前記固定板と移動板との間に介在し、前記主シリンダ
と協働して型開き量を一定に調整する補助シリンダを設
したことを特徴とするプラスチック成形装置。Injecting molten resin 1. In a compression molding apparatus, a fixed plate to which a fixed mold is fixed is provided, and a movable plate to which a movable movable mold is fixed is provided opposite to the fixed plate, and the movable plate is connected to the piston for mold clamping. 1. A plastic molding apparatus, comprising: a main cylinder, and an auxiliary cylinder interposed between the fixed plate and the movable plate, and cooperating with the main cylinder to adjust a mold opening amount to a constant value.
JP9943484A 1984-05-17 1984-05-17 Plastic molding device Pending JPS60242030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9943484A JPS60242030A (en) 1984-05-17 1984-05-17 Plastic molding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9943484A JPS60242030A (en) 1984-05-17 1984-05-17 Plastic molding device

Publications (1)

Publication Number Publication Date
JPS60242030A true JPS60242030A (en) 1985-12-02

Family

ID=14247324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9943484A Pending JPS60242030A (en) 1984-05-17 1984-05-17 Plastic molding device

Country Status (1)

Country Link
JP (1) JPS60242030A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394808A (en) * 1986-10-09 1988-04-25 Toshiba Mach Co Ltd Injection compression molding
EP0359830A1 (en) * 1988-03-24 1990-03-28 Kabushiki Kaisha Komatsu Seisakusho Injection-compression molding machine and method of molding by use of same
JPH04223125A (en) * 1990-12-26 1992-08-13 Toyoda Gosei Co Ltd Injection compression molder
JP2002240116A (en) * 2001-02-19 2002-08-28 Sato Tekkosho:Kk Mold clamping device for injection molding and injection holding machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856271A (en) * 1971-11-17 1973-08-07
JPS5032256A (en) * 1973-05-08 1975-03-28
JPS576523B2 (en) * 1975-06-11 1982-02-05
JPS58167133A (en) * 1982-03-29 1983-10-03 Matsushita Electric Ind Co Ltd Injection-compression molding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856271A (en) * 1971-11-17 1973-08-07
JPS5032256A (en) * 1973-05-08 1975-03-28
JPS576523B2 (en) * 1975-06-11 1982-02-05
JPS58167133A (en) * 1982-03-29 1983-10-03 Matsushita Electric Ind Co Ltd Injection-compression molding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394808A (en) * 1986-10-09 1988-04-25 Toshiba Mach Co Ltd Injection compression molding
EP0359830A1 (en) * 1988-03-24 1990-03-28 Kabushiki Kaisha Komatsu Seisakusho Injection-compression molding machine and method of molding by use of same
JPH04223125A (en) * 1990-12-26 1992-08-13 Toyoda Gosei Co Ltd Injection compression molder
JP2002240116A (en) * 2001-02-19 2002-08-28 Sato Tekkosho:Kk Mold clamping device for injection molding and injection holding machine

Similar Documents

Publication Publication Date Title
DE3850543T2 (en) Method, system and device for injection molding used therein and plastic object produced thereby.
US5415817A (en) Process for molding plastic lenses
EP0339184A2 (en) Method and apparatus for injection moulding of pieces injected from plasticizable material, in particular from plasticizable liquid crystal polymers
JPS608021A (en) Compression molding
EP0761408A1 (en) Method and apparatus for the manufacture of plastic articles
US5993704A (en) Process for determining the switchover point in the production of a die casting
KR970000502A (en) Plastic article low pressure injection molding method
CN109909476B (en) Extrusion pin control device and die casting machine having the same
US4675141A (en) Method of controlling pressurized gas, before and after injecting a molten material, in a mold cavity
DE10114228A1 (en) Process for controlling the shrinkage of molded parts
AU705831B2 (en) Lens injection-compression-molding method
US4386903A (en) Injection-molding machine with hydraulic mold clamping
JPS60242030A (en) Plastic molding device
US6287488B1 (en) Method for injection molding of high quality parts
JPH0433616B2 (en)
JP3213931B2 (en) High-pressure injection molding method and high-pressure injection molding die apparatus used in the method
DE3501846A1 (en) Process for controlling the injection moulding process of an injection moulding machine and device for carrying out the process
JPS5787340A (en) Injection unit for injection molding machine
US4407649A (en) Injection molding machine
CA2033338A1 (en) Injection-molding dimension-control and clamp-reduction
JP3108229B2 (en) Injection compression mold equipment for disk molding
EP0310905B1 (en) Method of controlling an injection moulding machine and injection moulding machine for executing this method
JPH1058113A (en) Method for adjusting flow rate in hydraulic apparatus and device therefor
DE102005048787A1 (en) Injection molding of thin-walled articles, using stored energy from simultaneous compression of molten plastics, hydraulic oil and pressurized gas on expansion to cause rapid mold filling
DE3407894C2 (en) Plastic injection molding device with injection molding machine and injection mold for sprue-less injection molding