JPH06285933A - Mold claming device and method of injection molding machine - Google Patents
Mold claming device and method of injection molding machineInfo
- Publication number
- JPH06285933A JPH06285933A JP9533193A JP9533193A JPH06285933A JP H06285933 A JPH06285933 A JP H06285933A JP 9533193 A JP9533193 A JP 9533193A JP 9533193 A JP9533193 A JP 9533193A JP H06285933 A JPH06285933 A JP H06285933A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- hydraulic cylinder
- movable
- compression
- shutter
- 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
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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
- B29C45/6714—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
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
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチックの射出圧
縮成形機の型締装置および型締方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping device and method for a plastic injection compression molding machine.
【０００２】[0002]
【従来の技術】従来の射出圧縮成形機は通常の射出成形
機の型締部を利用している。図６は従来の射出圧縮成形
機の型開位置における側面図であり、カイド１０の一端
には圧縮成形用の型締油圧シリンダ３０が装着され、他
端には固定金型１２を備えた固定盤１１が装着されてい
る。固定金型１２のスプール１３には射出部１４が当接
して設けられている。型締油圧シリンダ３０にはピスト
ンロッド３２を有するピストン３１が嵌入され、ピスト
ンロッド３２の先端にはガイト１０に沿って移動可能な
可動盤３３が固着されている。可動盤３３には可動金型
３４が装着されている。2. Description of the Related Art A conventional injection compression molding machine utilizes a mold clamping portion of a conventional injection molding machine. FIG. 6 is a side view of a conventional injection compression molding machine in a mold open position, in which a mold clamping hydraulic cylinder 30 for compression molding is attached to one end of a guide 10 and a fixed mold 12 is provided to the other end. The board 11 is mounted. An injection unit 14 is provided in contact with the spool 13 of the fixed mold 12. A piston 31 having a piston rod 32 is fitted in the mold clamping hydraulic cylinder 30, and a movable plate 33 movable along the guide 10 is fixed to the tip of the piston rod 32. A movable mold 34 is attached to the movable plate 33.
【０００３】成形する場合には、図７に示すように型開
位置から圧縮待機位置まで型締油圧シリンダ３０により
可動盤３３をカイド１０に沿って移動させる。圧縮待機
位置における固定金型１２の端面と可動金型３４の端面
との隙間δは通常 0.1〜３mmであり、これが圧縮量にな
る。つぎに射出部１４からスプール１３を通じて固定金
型１２と可動金型３４との隙間に溶融プラスチックを射
出し、一定量射出終了後、再び型締油圧シリンダ３０に
より図８に示すように可動金型３４を押し、樹脂の圧縮
成形である型締を行う。冷却終了後、図６の位置まで金
型を開いて製品を取り出し１サイクルを終わる。可動金
型３４の移動量は図示しない位置検出装置によって計測
される。In the case of molding, as shown in FIG. 7, the movable platen 33 is moved along the guide 10 by the mold clamping hydraulic cylinder 30 from the mold open position to the compression standby position. The gap δ between the end surface of the fixed mold 12 and the end surface of the movable mold 34 at the compression standby position is usually 0.1 to 3 mm, which is the amount of compression. Next, the molten plastic is injected from the injection section 14 through the spool 13 into the gap between the fixed mold 12 and the movable mold 34, and after a certain amount of injection is completed, the mold clamping hydraulic cylinder 30 is used again to move the movable mold as shown in FIG. 34 is pressed to perform mold clamping, which is compression molding of resin. After cooling, the mold is opened to the position shown in FIG. 6, the product is taken out, and one cycle is completed. The amount of movement of the movable mold 34 is measured by a position detection device (not shown).
【０００４】[0004]
【発明が解決しようとする課題】上記構成によれば、可
動金型は圧縮成形用の型締油圧シリンダにより圧縮待機
位置に移動し、更に型締油圧シリンダにより金型を押し
て圧縮成形作業である型締を行う。通常型締のための圧
縮ストロークδは前述のごとく 0.1〜3mm 程度である。
可動金型を通常の直圧式型締機構の成形機で圧縮待機位
置に停止させる場合、mm単位でバラツクのが普通であ
り、圧縮量の数１０％以上バラツキが生じ、成形品の精
度がいちじるしくバラツクことになる。According to the above construction, the movable mold is moved to the compression standby position by the mold clamping hydraulic cylinder for compression molding, and the mold is pressed by the mold clamping hydraulic cylinder for compression molding work. Perform mold clamping. The compression stroke δ for normal mold clamping is about 0.1 to 3 mm as described above.
When the movable mold is stopped at the compression standby position with a normal direct pressure type mold clamping mechanism molding machine, it is common for the unit to vary in units of mm, resulting in a variation of several tens of percent or more in the amount of compression, and the precision of the molded product is remarkably high. It will vary.
【０００５】本発明は上記の問題点に着目してなされた
もので、圧縮量δのバラツキが少なく、成形品のバラツ
キ精度を向上する射出圧縮成形機の型締装置および型締
方法を提供することを目的としている。The present invention has been made in view of the above problems, and provides a mold clamping device and a mold clamping method for an injection compression molding machine, in which the variation of the compression amount δ is small and the precision of the variation of the molded product is improved. Is intended.
【０００６】[0006]
【課題を解決するための手段】上記目的達成のため、本
発明に係る射出圧縮成形機の型締装置および型締め方法
の第１の発明においては、プラスチックの射出圧縮成形
機において、可動型盤を移動させる型開閉油圧シリンダ
と、圧縮成形用の型締油圧シリンダと、前記可動型盤と
前記型締油圧シリンダとの間に挿入され、前記型締油圧
シリンダの力を前記可動型盤に伝達するシャッタとを具
備せることを特徴としており、第２の発明においては、
前記可動型盤を、前記型開閉油圧シリンダにより型開位
置から圧縮待機位置まで移動し、前記シャッタを前記可
動型盤と前記型締油圧シリンダとの間に挿入し、金型に
樹脂を射出し、前記型締油圧シリンダにより圧縮成形を
行い、冷却後、金型を開いて成形品を取り出すことを特
徴としている。In order to achieve the above object, in the first invention of the mold clamping apparatus and mold clamping method of the injection compression molding machine according to the present invention, in the plastic injection compression molding machine, the movable mold platen is used. Is inserted between the mold opening / closing hydraulic cylinder, the mold clamping hydraulic cylinder for compression molding, the movable mold plate and the mold clamping hydraulic cylinder, and the force of the mold clamping hydraulic cylinder is transmitted to the movable mold plate. In the second invention,
The movable mold plate is moved from the mold open position to the compression standby position by the mold opening / closing hydraulic cylinder, the shutter is inserted between the movable mold plate and the mold clamping hydraulic cylinder, and resin is injected into the mold. The mold clamping hydraulic cylinder is used for compression molding, and after cooling, the mold is opened and the molded product is taken out.
【０００７】[0007]
【作用】上記構成によれば、可動型盤を移動する型開閉
油圧シリンダと型締油圧シリンダとを設け、型開閉油圧
シリンダによって可動型盤を圧縮待機位置まで移動した
のち型締油圧シリンダと可動型盤との間に挿入するシャ
ッタを備えたため、圧縮待機位置を機械的に決定するこ
とが可能となり、圧縮量のバラツキを僅少にすることが
できる。According to the above construction, the mold opening / closing hydraulic cylinder and the mold clamping hydraulic cylinder for moving the movable mold plate are provided, and the movable mold plate is moved to the compression standby position by the mold opening / closing hydraulic cylinder and then moved to the mold clamping hydraulic cylinder. Since the shutter which is inserted between the mold board and the mold board is provided, the compression standby position can be mechanically determined, and the variation in the compression amount can be minimized.
【０００８】[0008]
【実施例】以下に本発明に係る射出圧縮成形機の型締装
置および型締方法の実施例について、図面を参照して説
明する。図１は射出圧縮成形機の型開位置における側面
図であり、ガイド１０の一端には圧縮成形用の型締油圧
シリンダであるパワーシリンダ１が装着され、他端には
固定金型１２を備えた固定盤１１が装着されている。固
定金型１２のスプール１３に当接して射出部１４が設け
られている。パワーシリンダ１にはピストンロッド３を
有するピストン２が嵌入されており、型開位置において
はピストンヘッド４はパワーシリンダ１の底面５に当接
している。ガイド１０には可動金型２１を有する可動盤
２０がカイド１０に沿って滑動自在に装着されている。
可動盤２０には可動金型２１の反対側に、ピストンロッ
ド３の直径より僅かに大きい穴２３を有するブラケット
２２が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a mold clamping device and a mold clamping method for an injection compression molding machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an injection compression molding machine in a mold open position. One end of a guide 10 is equipped with a power cylinder 1 which is a mold clamping hydraulic cylinder for compression molding, and the other end is provided with a fixed mold 12. A fixed plate 11 is attached. An injection section 14 is provided in contact with the spool 13 of the fixed mold 12. A piston 2 having a piston rod 3 is fitted in the power cylinder 1, and the piston head 4 is in contact with the bottom surface 5 of the power cylinder 1 in the mold open position. A movable plate 20 having a movable mold 21 is mounted on the guide 10 so as to be slidable along the guide 10.
A bracket 22 having a hole 23 slightly larger than the diameter of the piston rod 3 is provided on the movable plate 20 on the side opposite to the movable mold 21.
【０００９】ブラケット２２には図１のＡ−Ａ矢視図で
ある図２に示すように、シャッタ２４がピン２５を中心
として揺動自在に装着されている。シャッタ２４はシャ
ッタ開閉油圧シリンダ２６により作動するようになって
おり、型開位置においては図２に示すようにピストンロ
ッド３と接触しない位置に置かれている。シャッタ２4
の外径はブラケット２２の穴２３の直径より大きく設定
されている。可動盤２０とパワーシリンダ１とは図１に
示すように型開閉油圧シリンダである早送り油圧シリン
ダ２７により連結され、早送り油圧シリンダ２７は型開
位置においては縮んだ状態であり、ピストンロッド３は
穴２３からブラケット２２内に埋入している。A shutter 24 is mounted on the bracket 22 so as to be swingable about a pin 25, as shown in FIG. The shutter 24 is operated by a shutter opening / closing hydraulic cylinder 26, and is placed at a position where it does not come into contact with the piston rod 3 in the mold open position as shown in FIG. Shutter 24
The outer diameter of is larger than the diameter of the hole 23 of the bracket 22. As shown in FIG. 1, the movable platen 20 and the power cylinder 1 are connected by a rapid feed hydraulic cylinder 27 which is a die opening / closing hydraulic cylinder. The rapid feed hydraulic cylinder 27 is in a contracted state at the die open position, and the piston rod 3 has a hole. It is embedded in the bracket 22 from 23.
【００１０】成形運転はつぎの工程により行う。 （１）図３に示すように速送り油圧シリンダ２７を伸ば
して可動金型２１を圧縮待機位置を少し越える位置まで
移動させる。 （２）図３のＢ−Ｂ矢視図である図４に示すようにシャ
ッタ開閉油圧シリンダ２６によりシャッタ２４をピン２
５を中心として揺動させ、シャッタ２４によりブラケッ
ト２２の穴２３を閉塞する位置に移動させる。 （３）速送り油圧シリンダ２７を少し縮めてシャッタ２
４をピストンロッド３の先端６に当接させ、圧縮待機位
置にする。 （４）射出部１４から金型内に樹脂を射出する。 （５）射出中あるいは射出終了後に図５に示すようにパ
ワーシリンダ１により可動金型２１を閉じて樹脂を一定
ストローク圧縮、成形する型締を行う。 （６）冷却後、金型を開いて図１の状態に復し、成形品
を取り出す。 （７）シャッタ開閉油圧シリンダによりシャッタ２４を
開いて図２に示す状態に復して１サイクルを終わる。The molding operation is performed by the following steps. (1) As shown in FIG. 3, the rapid-feed hydraulic cylinder 27 is extended to move the movable mold 21 to a position slightly beyond the compression standby position. (2) As shown in FIG. 4 which is a BB arrow view of FIG. 3, the shutter 24 is opened and closed by the shutter opening / closing hydraulic cylinder 26.
It is swung about 5 and is moved to a position where the hole 23 of the bracket 22 is closed by the shutter 24. (3) Shrink the hydraulic cylinder 27 for fast-forwarding slightly and release the shutter 2.
4 is brought into contact with the tip 6 of the piston rod 3 to be in the compression standby position. (4) Resin is injected from the injection unit 14 into the mold. (5) During or after the injection, as shown in FIG. 5, the movable mold 21 is closed by the power cylinder 1 and the mold is clamped to compress and mold the resin for a constant stroke. (6) After cooling, the mold is opened to restore the state of FIG. 1, and the molded product is taken out. (7) Shutter opening / closing The shutter 24 is opened by the hydraulic cylinder, the condition shown in FIG. 2 is restored, and one cycle is completed.
【００１１】上記の工程（３）の圧縮待機位置におい
て、ピストンロッド３の先端６とシャッタ２４との隙間
が０のときに可動金型２１と固定金型１２との隙間、す
なわち圧縮量δを所定の値になるように調整しておけ
ば、圧縮待機位置は機械的に定まり、サイクルごとの圧
縮量δのバラツキはほぼ０となる。なお、（３）の工程
は、工程（４）において樹脂圧により可動盤２０が動か
され、シャッタ２４がピストンロッド３の先端６に押し
付けられるため、省略してもよい。また、圧縮量あるい
は金型の厚さ等により可動盤２０の圧縮待機位置を調節
するために、パワーシリンダ１の位置調整機構、あるい
はブラケット２２の高さ調整機構等を備えてもよい。At the compression standby position in the above step (3), when the clearance between the tip 6 of the piston rod 3 and the shutter 24 is 0, the clearance between the movable mold 21 and the fixed mold 12, that is, the compression amount δ, is calculated. If adjusted to a predetermined value, the compression standby position is mechanically determined, and the variation of the compression amount δ for each cycle becomes almost zero. The step (3) may be omitted because the movable platen 20 is moved by the resin pressure and the shutter 24 is pressed against the tip 6 of the piston rod 3 in the step (4). Further, a position adjusting mechanism of the power cylinder 1 or a height adjusting mechanism of the bracket 22 may be provided to adjust the compression standby position of the movable platen 20 according to the amount of compression or the thickness of the mold.
【００１２】[0012]
【発明の効果】以上説明したごとく、本発明は可動型盤
を移動させる型開閉油圧シリンダと、型締油圧シリンダ
と、可動型盤と型締油圧シリンダとの間に挿入するシャ
ッタとを設け、可動型盤を圧縮待機位置まで移動して可
動型盤と型締油圧シリンダとの間にシャッタを挿入し、
樹脂を射出成形するようにしたので、圧縮待機位置は機
械的に定まり、したがって圧縮量のバラツキが少なく、
バラツキ精度のよい製品が得られる射出圧縮成形機の型
締装置および型締方法が提供できる。As described above, the present invention is provided with the mold opening / closing hydraulic cylinder for moving the movable mold plate, the mold clamping hydraulic cylinder, and the shutter inserted between the movable mold plate and the mold clamping hydraulic cylinder. Move the movable mold platen to the compression standby position, insert the shutter between the movable mold platen and the mold clamping hydraulic cylinder,
Since the resin is injection molded, the compression standby position is mechanically determined, so there is little variation in the amount of compression,
It is possible to provide a mold clamping device and a mold clamping method for an injection compression molding machine, which can obtain a product with high variation accuracy.
【図１】本発明の射出圧縮成形機の型開位置における側
面図である。FIG. 1 is a side view of an injection compression molding machine of the present invention in a mold open position.
【図２】本発明の射出圧縮成形機のシャッタの開状態を
示す平面図である。FIG. 2 is a plan view showing an open state of a shutter of the injection compression molding machine of the present invention.
【図３】本発明の射出圧縮成形機の圧縮待機位置におけ
る側面図である。FIG. 3 is a side view of the injection compression molding machine of the present invention at a compression standby position.
【図４】本発明の射出圧縮成形機のシャッタの閉状態を
示す平面図である。FIG. 4 is a plan view showing a closed state of a shutter of the injection compression molding machine of the present invention.
【図５】本発明の射出圧縮成形機の型締位置における側
面図である。FIG. 5 is a side view of the injection compression molding machine of the present invention in a mold clamping position.
【図６】従来の射出圧縮成形機の型開位置における側面
図である。FIG. 6 is a side view of a conventional injection compression molding machine in a mold open position.
【図７】従来の射出圧縮成形機の圧縮待機位置における
側面図である。FIG. 7 is a side view of a conventional injection compression molding machine at a compression standby position.
【図８】従来の射出圧縮成形機の型締位置における側面
図である。FIG. 8 is a side view of a conventional injection compression molding machine in a mold clamping position.
１ パワーシリンダ ２ ピストン ３ ピストンロッド １１ 固定盤 １２ 固定金型 １４ 射出部 ２０ 可動盤 ２１ 可動金型 ２２ ブラケット ２３ 穴 ２４ シャッタ ２５ ピン ２６ シャッタ開閉油圧シリンダ ２７ 速送り油圧シリンダ 1 Power Cylinder 2 Piston 3 Piston Rod 11 Fixed Plate 12 Fixed Mold 14 Injection Section 20 Movable Plate 21 Movable Mold 22 Bracket 23 Hole 24 Shutter 25 Pin 26 Shutter Open / Close Hydraulic Cylinder 27 Fast Feed Hydraulic Cylinder
Claims (2)
て、可動型盤を移動させる型開閉油圧シリンダと、圧縮
成形用の型締油圧シリンダと、前記可動型盤と前記型締
油圧シリンダとの間に挿入され、前記型締油圧シリンダ
の力を前記可動型盤に伝達するシャッタとを具備せるこ
とを特徴とする射出圧縮成形機の型締装置および型締方
法。1. In a plastic injection compression molding machine, a mold opening / closing hydraulic cylinder for moving a movable mold plate, a mold clamping hydraulic cylinder for compression molding, and a mold inserting hydraulic cylinder inserted between the movable mold plate and the mold clamping hydraulic cylinder. And a shutter for transmitting the force of the mold clamping hydraulic cylinder to the movable mold plate, and a mold clamping device and a mold clamping method for an injection compression molding machine.
ダにより型開位置から圧縮待機位置まで移動し、前記シ
ャッタを前記可動型盤と前記型締油圧シリンダとの間に
挿入し、金型に樹脂を射出し、前記型締油圧シリンダに
より圧縮成形を行い、冷却後、金型を開いて成形品を取
り出すことを特徴とする射出圧縮成形機の型締装置およ
び型締方法。2. The movable mold plate is moved from the mold open position to the compression standby position by the mold opening / closing hydraulic cylinder, the shutter is inserted between the movable mold plate and the mold clamping hydraulic cylinder, and the mold is A mold clamping device and a mold clamping method for an injection compression molding machine, which comprises injecting a resin into a mold, performing compression molding by the mold clamping hydraulic cylinder, cooling, and then opening a mold to take out a molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9533193A JPH06285933A (en) | 1993-03-30 | 1993-03-30 | Mold claming device and method of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9533193A JPH06285933A (en) | 1993-03-30 | 1993-03-30 | Mold claming device and method of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06285933A true JPH06285933A (en) | 1994-10-11 |
Family
ID=14134744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9533193A Pending JPH06285933A (en) | 1993-03-30 | 1993-03-30 | Mold claming device and method of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06285933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382987A (en) * | 2018-11-16 | 2019-02-26 | 北京化工大学 | A kind of clamping apparatus of injection molding machine |
-
1993
- 1993-03-30 JP JP9533193A patent/JPH06285933A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382987A (en) * | 2018-11-16 | 2019-02-26 | 北京化工大学 | A kind of clamping apparatus of injection molding machine |
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