JP3343792B2 - Two-layer foam injection molding machine - Google Patents

Two-layer foam injection molding machine

Info

Publication number
JP3343792B2
JP3343792B2 JP35253593A JP35253593A JP3343792B2 JP 3343792 B2 JP3343792 B2 JP 3343792B2 JP 35253593 A JP35253593 A JP 35253593A JP 35253593 A JP35253593 A JP 35253593A JP 3343792 B2 JP3343792 B2 JP 3343792B2
Authority
JP
Japan
Prior art keywords
mold
plate
tie bar
opening
cylinder
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 - Fee Related
Application number
JP35253593A
Other languages
Japanese (ja)
Other versions
JPH07195413A (en
Inventor
直樹 竹内
Original Assignee
株式会社神戸製鋼所
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 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to JP35253593A priority Critical patent/JP3343792B2/en
Priority claimed from DE4480340A external-priority patent/DE4480340C2/en
Publication of JPH07195413A publication Critical patent/JPH07195413A/en
Application granted granted Critical
Publication of JP3343792B2 publication Critical patent/JP3343792B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • B29C45/04Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • B29C45/045Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • B29C45/1615The materials being injected at different moulding stations
    • B29C45/1628The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/67Mould opening, closing or clamping devices hydraulic
    • B29C45/6707Mould 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

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明は、自動車の内装用パネル
の如く、硬質樹脂である芯材の片面にクッション性を有
する発泡層の表面にスキン層を備えてなる表面材の2層
発泡成形品を一台の射出成形で成形するための2層発泡
射出成形装置に関し、特に固定盤と可動盤と回転盤とを
備え2組の金型で同時に成形するものに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-layer foam molding of a surface material, such as an interior panel of an automobile, comprising a foam layer having a cushioning property on one surface of a core material made of a hard resin and a skin layer on the surface. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-layer foam injection molding apparatus for molding an article by one injection molding, and more particularly, to an apparatus having a fixed plate, a movable plate, and a rotary plate, which are simultaneously molded by two sets of dies.
【0002】[0002]
【従来の技術】2種類の異なる材質又は異なる色の樹脂
材料を重ね合わせた2層成形品を一台の射出成形するこ
とができる2層射出成形装置は、特公平3−51207
号公報に開示されるように公知である。
2. Description of the Related Art A two-layer injection molding apparatus capable of injection-molding a two-layer molded product in which two kinds of different materials or resin materials of different colors are superposed is disclosed in Japanese Patent Publication No. 3-51207.
It is known as disclosed in Japanese Patent Publication No.
【0003】同公報の2層射出成形装置は固定盤と可動
盤との間に回転盤を配設し、固定盤と回転盤との間及び
回転盤及び可動盤との間のそれぞれで一次成形及び二次
成形を行うものである。すなわち、固定盤と回転盤の間
の一次側金型に射出成形して一次成形品を得た後に、回
転盤を180°回転して、回転盤及び可動盤の間の二次
側金型内に一次成形品が位置する状態で二次側金型に射
出成形し2層の二次成形品を得る。
In the two-layer injection molding apparatus disclosed in the publication, a rotary plate is provided between a fixed plate and a movable plate, and primary molding is performed between the fixed plate and the rotary plate and between the rotary plate and the movable plate. And secondary molding. That is, after a primary molded product is obtained by injection molding into a primary mold between the fixed plate and the rotary plate, the rotary plate is rotated by 180 °, and the inside of the secondary die between the rotary plate and the movable plate is formed. In the state where the primary molded product is located, injection molding is performed on a secondary mold to obtain a two-layer secondary molded product.
【0004】このような2層射出成形装置の型締め機構
としては、特公平3−51207号公報に開示される如
く、固定盤と回転盤と可動盤を閉じた状態でタイバーを
介して共締めするタイプのものが使用される。
As disclosed in Japanese Patent Publication No. 3-51207, a mold clamping mechanism of such a two-layer injection molding apparatus is jointly fastened via a tie bar with a fixed platen, a rotary platen and a movable platen closed. Type is used.
【0005】[0005]
【発明が解決しようとする課題】ところが、上述した2
層発泡成形品の場合には、発泡のために、回転盤と可動
盤の間で所定間隔の型開きを行う必要があるが、特公平
3−51207号公報のものように共締めするタイプの
ものは、二次側金型を開くと同時に一次側金型も開くこ
とになって制御不能になるという問題点があった。
However, the above-mentioned 2
In the case of a layer foam molded product, it is necessary to open the mold at a predetermined interval between the rotating plate and the movable plate for foaming. However, there is a problem in that the secondary mold is opened and the primary mold is opened at the same time, so that control becomes impossible.
【0006】本発明は、従来の技術の有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、一次側金型と二次側金型で通常の射出成形を行
い、更に二次側金型で型開きを行って発泡射出成形を行
うことができる2層発泡射出成形装置を提供することに
ある。
The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to perform ordinary injection molding using a primary mold and a secondary mold. Another object of the present invention is to provide a two-layer foam injection molding apparatus capable of performing foam injection molding by opening a mold with a secondary mold.
【0007】[0007]
【課題を解決するための手段】上記課題を解決する本発
明の2層発泡射出成形装置は、2組の対向する射出ユニ
ット間に設けられた固定盤と、該固定盤から突設された
複数のタイバーと、該タイバーに案内され第2開閉シリ
ンダに接続されて開閉自在な可動盤と、該可動盤に設け
られ前記タイバーに対する第2ロック手段と、前記可動
盤と前記固定盤との間に設けられ前記タイバーに案内さ
れ第1開閉シリンダに接続された開閉自在な回転盤と、
該回転盤に設けられ前記タイバーに対する第1ロック手
段と、前記タイバーを前記固定盤に対して進退させる型
締シリンダと、前記可動盤と前記回転盤との間を所定間
隔開く型開シリンダとを備えてなるものであり、前記第
1ロック手段及び第2ロック手段は、前記タイバーを把
持する弾性変形部材を有して油圧で作動するものが好ま
しい。
A two-layer foam injection molding apparatus according to the present invention for solving the above-mentioned problems comprises a fixed plate provided between two sets of opposed injection units, and a plurality of protruding members provided from the fixed plate. A tie bar, a movable plate that is guided by the tie bar and is connected to a second opening / closing cylinder and that can be opened and closed; a second locking means for the tie bar provided on the movable plate; and between the movable plate and the fixed plate. An openable / closable turntable provided and guided by the tie bar and connected to a first open / close cylinder;
A first locking means for the tie bar provided on the rotating plate, a mold clamping cylinder for moving the tie bar forward and backward with respect to the fixed plate, and a mold opening cylinder for opening a predetermined interval between the movable plate and the rotating plate. Preferably, the first locking means and the second locking means have an elastically deformable member for gripping the tie bar and are hydraulically operated.
【0008】[0008]
【作用】第1開閉シリンダ及び第2開閉シリンダで固定
盤、回転盤及び可動盤を閉めた状態にし、可動盤の第2
ロック手段でタイバーと一体にし、型締シリンダでタイ
バーを固定盤に対して引き込むと固定盤、回転盤及び可
動盤の共締めが行われる。この状態で一次側金型と二次
側金型に所定の樹脂を射出する通常の射出成形が行われ
る。そして、回転盤の第1ロック手段でタイバーと一体
にし、可動盤の第2ロック手段を解放すると、型締シリ
ンダは回転盤と固定盤の間だけを型締めする。そして、
可動盤と回転盤の間の型開シリンダで所定間隔の型開き
を行う。このように第1ロック手段と第2ロック手段の
切換で、一次側金型と二次側金型の共締めから一次側金
型の単独に切り換わり、発泡のための二次側金型の型開
きがスムーズに行われる。
With the first opening and closing cylinder and the second opening and closing cylinder, the fixed plate, the rotary plate and the movable plate are closed, and the second plate of the movable plate is
When the tie bar is integrated with the tie bar by the locking means and the tie bar is pulled into the fixed plate by the mold clamping cylinder, the fixed plate, the rotating plate and the movable plate are jointly fastened. In this state, normal injection molding for injecting a predetermined resin into the primary mold and the secondary mold is performed. Then, when the first lock means of the rotary disc is integrated with the tie bar and the second lock means of the movable disc is released, the mold clamping cylinder clamps the mold only between the rotary disc and the fixed disc. And
The mold is opened at a predetermined interval by a mold opening cylinder between the movable platen and the rotary platen. In this way, by switching between the first lock means and the second lock means, the primary mold and the secondary mold are jointly tightened and switched to the primary mold alone, and the secondary mold for foaming is switched. The mold opens smoothly.
【0009】[0009]
【実施例】以下、本発明の実施例を図1乃至図3を参照
しながら説明する。図1は本発明の2層発泡射出成形装
置の前閉状態の縦断側面図であり、図2は図1のA−A
断面図であり、図3はロック手段の構造と作動を示す図
である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional side view of a front closed state of a two-layer foam injection molding apparatus of the present invention, and FIG.
FIG. 3 is a sectional view showing the structure and operation of the locking means.
【0010】図1において、図面右方から順にコモンベ
ット1の上に、第1射出ユニット2、固定盤3、回転盤
4、可動盤5及び第2射出ユニット6が配設されてい
る。
In FIG. 1, a first injection unit 2, a fixed platen 3, a rotary plate 4, a movable plate 5, and a second injection unit 6 are arranged on a common bed 1 in order from the right side of the drawing.
【0011】第1射出ユニット2はスライドレール11
の上を摺動自在に設置され、射出時にその全体が油圧シ
リンダで図面左方へと移動する。回転盤4及び移動盤5
はスライドレール12上を摺動自在であると共に、固定
盤3から突設されたタイバー13が貫通される構造にな
っている。このタイバー13の一端はピストン14にな
っており、固定盤3内のシリンダ15と共に型締シリン
ダ16を形成している。またタイバー13の他端にはエ
ンドプレート17が固設され、プレート17の下部はス
ライドレール12上を摺動自在になっている。また、第
2射出ユニット6はスライドレール18の上にを摺動自
在に設置され、射出時にその全体が図面右方へと移動す
る。
The first injection unit 2 includes a slide rail 11
It is slidably mounted on the top, and the whole is moved to the left in the drawing by the hydraulic cylinder during injection. Rotating disk 4 and moving disk 5
Is configured to be slidable on the slide rail 12 and through a tie bar 13 protruding from the fixed platen 3. One end of the tie bar 13 is a piston 14 and forms a mold clamping cylinder 16 together with the cylinder 15 in the fixed platen 3. An end plate 17 is fixed to the other end of the tie bar 13, and a lower portion of the plate 17 is slidable on the slide rail 12. The second injection unit 6 is slidably mounted on a slide rail 18, and the entirety moves rightward in the drawing at the time of injection.
【0012】上記回転盤4と固定盤3との間に第1開閉
シリンダ20が介設され、第1開閉シリンダ20の伸長
又は短縮によって回転盤4は固定盤3に対して開閉動作
する。同様に、可動盤5と固定盤3との間に第2開閉シ
リンダ21が介設され、第2開閉シリンダ21の伸長又
は短縮によって移動盤5は固定盤3に対して開閉動作す
る。
A first opening / closing cylinder 20 is interposed between the rotating plate 4 and the fixed platen 3. The rotating plate 4 opens and closes with respect to the fixed platen 3 by extending or shortening the first opening / closing cylinder 20. Similarly, a second opening / closing cylinder 21 is provided between the movable platen 5 and the fixed platen 3, and the movable platen 5 opens and closes with respect to the fixed platen 3 by extending or shortening the second opening / closing cylinder 21.
【0013】また、回転盤4とタイバー13の間に第1
ロック手段22が介設され、可動盤5とタイバー13の
間に第2ロック手段23が介設され、これらのロック手
段22,23によって、回転盤4と可動盤5は別個にタ
イバーと一体になったり、移動自在になったりする。
Further, the first tie bar 13 is provided between the turntable 4 and the tie bar 13.
A lock means 22 is interposed, and a second lock means 23 is interposed between the movable plate 5 and the tie bar 13. By these lock means 22, 23, the rotary plate 4 and the movable plate 5 are separately integrated with the tie bar. Or move freely.
【0014】さらに、回転盤4と可動盤5と間に型開シ
リンダ24が介設されている。すなわち、回転盤4から
突設された棒体25の先端にマイクロメータヘッド26
が螺合されており、このマイクロメータヘッド26に型
開シリンダ24のロッド24a先端が当接する構造にな
っている。型開シリンダ24のシリンダ側室に圧油が導
入され、ストロークエンドまでロッドが伸びると、可動
盤5が所定距離だけ開く。この所定距離はマイクロメー
タヘッド26の回転で調整自在である。
Further, a mold opening cylinder 24 is interposed between the rotary platen 4 and the movable platen 5. That is, the micrometer head 26 is attached to the tip of the rod 25 protruding from the turntable 4.
Is screwed, and the tip of the rod 24a of the mold opening cylinder 24 abuts on the micrometer head 26. When pressure oil is introduced into the cylinder side chamber of the mold opening cylinder 24 and the rod extends to the stroke end, the movable platen 5 opens a predetermined distance. This predetermined distance can be adjusted by rotating the micrometer head 26.
【0015】上述したタイバー13、第1開閉シリンダ
20、第2開閉シリンダ21及び型開シリンダ24(棒
体25)の配置関係が図2に示される。タイバー13は
4隅に4本配設され、各2本の第1開閉シリンダ20及
び第2開閉シリンダ21は互いに交差する対角線上に配
設され、棒体25は2本あって中心Oに対して点対称に
配設されている。
FIG. 2 shows the positional relationship among the tie bar 13, the first opening / closing cylinder 20, the second opening / closing cylinder 21, and the mold opening cylinder 24 (rod 25). Four tie bars 13 are arranged at four corners, two first opening / closing cylinders 20 and second opening / closing cylinders 21 are arranged on diagonal lines crossing each other, and two bar bodies 25 are provided with respect to the center O. They are arranged symmetrically.
【0016】図1に戻り、固定盤3と回転盤4の間に
は、一次側金型30が取り付けられ、回転盤4と可動盤
5の間には、二次側金型31が取り付けられている。特
に回転盤4は軸32で回転可能な回転体33を有してお
り、この回転体33に同じ形状の一次側金型30の雄型
30aと二次側金型31の雄型31aが取り付けられて
いる。この回転体33はロータリーアクチュエータ34
で180°毎の水平面内回転が可能であり、一次側金型
30の雄型30aと二次側金型31の雄型31aの位置
が切り換わる。また、一次側金型30には一次成形用キ
ャビティ35が形成され、二次側金型31には二次成形
用キャビティ36が形成される。二次成形用キャビティ
36は一次成形層の上に射出するため広くなっている。
また、上述した型開シリンダ24で二次成形用キャビテ
ィ36は更に開いて一次成形品の上に射出された二次成
形層が発泡するようになっている。
Returning to FIG. 1, a primary die 30 is mounted between the fixed platen 3 and the rotary plate 4, and a secondary die 31 is mounted between the rotary plate 4 and the movable plate 5. ing. In particular, the turntable 4 has a rotating body 33 rotatable about a shaft 32. A male mold 30a of the primary mold 30 and a male mold 31a of the secondary mold 31 having the same shape are attached to the rotating body 33. Have been. The rotating body 33 is a rotary actuator 34
, The rotation of the male mold 30a of the primary mold 30 and the male mold 31a of the secondary mold 31 are switched. A primary molding cavity 35 is formed in the primary mold 30, and a secondary molding cavity 36 is formed in the secondary mold 31. The secondary molding cavity 36 is wide for injection onto the primary molding layer.
Further, the secondary molding cavity 36 is further opened by the above-described mold opening cylinder 24 so that the secondary molding layer injected onto the primary molded product foams.
【0017】また、図3において、二次側金型31から
の成形品の取り出しや回転盤4の回転体33の180°
回転のために、回転盤4及び可動盤5は第1開閉シリン
ダ20及び第2開閉シリンダ21の伸長によって図示の
全開状態になる。そして、第1開閉シリンダ20及び第
2開閉シリンダ21が短縮すると、図1のように固定盤
3と回転盤4と可動盤5は全閉状態になる。
In FIG. 3, the molded product is taken out of the secondary mold 31 and the rotating body 33 of the rotating disk 4 is rotated by 180 °.
Due to the rotation, the rotary platen 4 and the movable platen 5 are fully opened as shown by the extension of the first opening / closing cylinder 20 and the second opening / closing cylinder 21. When the first opening / closing cylinder 20 and the second opening / closing cylinder 21 are shortened, the fixed platen 3, the rotary platen 4, and the movable platen 5 are fully closed as shown in FIG.
【0018】つぎに、図4により好ましい第1ロック手
段22及び第2ロック手段23の構造と作動を説明す
る。図4(a)はロック状態の断面図、図4(b)はア
ンロック状態の断面図である。
Next, the structure and operation of the preferred first lock means 22 and second lock means 23 will be described with reference to FIG. FIG. 4A is a sectional view in a locked state, and FIG. 4B is a sectional view in an unlocked state.
【0019】図4(a)において、タイバー13に対す
るスリーブ41が両端フランジ42を介して回転盤4又
は可動盤5に固定されている。このスリーブ41はタイ
バー13に対して締まりバメの内径を有しており、通常
はタイバー13を把持して一体化されている。また、ス
リーブ41は弾性変形可能であり、スリーブ41と両端
フランジ42の間にはシール43が設けられ、両端フラ
ンジ42とタイバー13の間にはシール44が設けら
れ、圧油室45を形成している。そのため、ポート46
から圧油を供給すると、図4(b)のように、スリーブ
41が膨らんでタイバー13との間に隙間が形成され、
タイバー13に対する回転盤4又は可動盤5の移動はス
ムーズに行われる。ポート46から圧油を抜くと、図4
(a)のロック状態に戻る。このロック手段22,23
はタイバー13のどの位置でもロック状態を形成するこ
とができる。
In FIG. 4A, a sleeve 41 for the tie bar 13 is fixed to the rotating plate 4 or the movable plate 5 via flanges 42 at both ends. The sleeve 41 has an inner diameter that is tight against the tie bar 13, and is usually integrated with the tie bar 13 by grasping the tie bar 13. Further, the sleeve 41 is elastically deformable, a seal 43 is provided between the sleeve 41 and both end flanges 42, a seal 44 is provided between both end flanges 42 and the tie bar 13, and a pressure oil chamber 45 is formed. ing. Therefore, port 46
When the pressurized oil is supplied from, as shown in FIG. 4B, the sleeve 41 expands to form a gap between the sleeve 41 and the tie bar 13.
The rotation of the turntable 4 or the movable platen 5 with respect to the tie bar 13 is performed smoothly. When pressure oil is drained from port 46, FIG.
The state returns to the locked state of FIG. The locking means 22, 23
Can form a locked state at any position of the tie bar 13.
【0020】つぎに、図5により、上述した2層発泡射
出成形装置による2層発泡成形品の成形工程を説明す
る。図5(a)は準備工程、図5(b)〜(d)は繰り
返し工程を示している。
Next, the molding process of a two-layer foam molded article by the above-described two-layer foam injection molding apparatus will be described with reference to FIG. FIG. 5A shows a preparation step, and FIGS. 5B to 5D show a repetition step.
【0021】図5(a)において、固定盤3に対して少
なくとも回転盤4を閉じ、第1射出ユニット2で一次側
金型30の一次キャビティ35内に硬質樹脂を射出し、
芯材の一次成形品を雄型30aの上に形成する。
In FIG. 5 (a), at least the rotating plate 4 is closed with respect to the fixed plate 3, and the first injection unit 2 injects a hard resin into the primary cavity 35 of the primary mold 30.
A primary molded product of the core material is formed on the male mold 30a.
【0022】そして、図5(b)において、回転盤4と
可動盤5を矢印aのように開いて全開状態にし、回転盤
4の回転体33を180°回転して、芯材を二次側金型
の方に位置させる。そして、回転盤4と可動盤5を矢印
bのように閉じて全閉状態にする。
In FIG. 5 (b), the rotary plate 4 and the movable plate 5 are opened as shown by the arrow a so as to be fully opened, and the rotating body 33 of the rotary plate 4 is rotated by 180.degree. Position it toward the side mold. Then, the rotary platen 4 and the movable platen 5 are closed as shown by an arrow b to bring them into a fully closed state.
【0023】図5(c)において、可動盤5の第2ロッ
ク手段23をロック状態にしてタイバー13と可動盤5
を一体化させる。このとき、回転盤4の第1ロック手段
22はアンロック状態のままである。そして、型締シリ
ンダ16のロッド側室に圧油が供給され、ピストン14
が矢印c方向に引き込まれると、固定盤3に対する回転
盤4と可動盤5の共締めが行われる。この状態で、第1
射出ユニット2と第2射出ユニット6の射出が行われ
る。すると、一次側金型30では新たな芯材が形成さ
れ、二次側金型では芯材の上に発泡樹脂が積層される。
In FIG. 5 (c), the tie bar 13 and the movable platen 5
Are integrated. At this time, the first locking means 22 of the turntable 4 remains in the unlocked state. Then, pressure oil is supplied to the rod side chamber of the mold clamping cylinder 16 and the piston 14
Is pulled in the direction of the arrow c, the rotary plate 4 and the movable plate 5 are fastened to the fixed plate 3 together. In this state, the first
The injection of the injection unit 2 and the second injection unit 6 is performed. Then, a new core material is formed in the primary mold 30, and a foamed resin is laminated on the core material in the secondary mold.
【0024】図5(d)において、回転盤4の第1ロッ
ク手段22をアンロック状態からロック状態にし、可動
盤5の第2ロック手段23をロック状態からアッロック
状態にすると、固定盤3に対して回転盤4だけが型締シ
リンダ16で型締めされる単独型締めに切り換わる。そ
して、型開シリンダ24のロッド24aを矢印d方向に
伸長させると、ロッド24aの先端がマイクロメータヘ
ッド26に当たり、可動盤5は図面左方に移動し、距離
εの型開きが行われる。そして、発泡樹脂の発泡が行わ
れ、表面のスキン層と内部の発泡層を備えてなる表面材
が心芯との積層成形体が形成される。積層成形体が冷え
ると、型締シリンダ16を解放し、第1ロック手段22
もアンロック状態にする。
In FIG. 5D, when the first locking means 22 of the rotary platen 4 is changed from the unlocked state to the locked state and the second locking means 23 of the movable platen 5 is changed from the locked state to the locked state, the fixed platen 3 On the other hand, only the turntable 4 is switched to the single mold clamping in which the mold is clamped by the mold clamping cylinder 16. When the rod 24a of the mold opening cylinder 24 is extended in the direction of arrow d, the tip of the rod 24a hits the micrometer head 26, the movable platen 5 moves to the left in the drawing, and the mold is opened by the distance ε. Then, foaming of the foamed resin is performed, and a laminate formed of a surface material having a surface skin layer and an inner foam layer and a core is formed. When the laminated molded body cools, the mold clamping cylinder 16 is released, and the first locking means 22 is released.
Is also unlocked.
【0025】そして、第1開閉シリンダ20と第2開閉
シリンダ21を伸長させて図3の全開状態にする。つぎ
に、積層成形体を取り出し、回転盤4の回転体33を1
80°回転させる。つぎに、第1開閉シリンダ20と第
2開閉シリンダ21を短縮させて図1の全閉状態にす
る。この状態が図5(b)の状態であり、再び図5
(c)→図5(d)の成形サイクルを繰り返す。
Then, the first opening / closing cylinder 20 and the second opening / closing cylinder 21 are extended to the fully opened state in FIG. Next, the laminated molded body was taken out, and the rotating body 33 of the rotating disk 4 was set to 1
Rotate 80 °. Next, the first opening / closing cylinder 20 and the second opening / closing cylinder 21 are shortened to the fully closed state in FIG. This state is the state shown in FIG.
(C) → The molding cycle of FIG. 5 (d) is repeated.
【0026】[0026]
【発明の効果】本発明の2層発泡射出成形装置は、第1
ロック手段と第2ロック手段の切換によって、一次側金
型と二次側金型の共締めから一次側金型の単独締めに切
り換えられ、発泡のための二次側金型の型開きをスムー
ズに行える構成にしたので、2層発泡成形を一台の射出
成形装置で連続的に生産することができる。また、第1
ロック手段と第2ロック手段にタイバーを把持する弾性
変形部材を有するものを使用すると、タイバーの任意の
位置で把持でき、金型厚みの変更に伴う把持位置調整の
如き面倒な調整が不要であって段取り替えに迅速に対応
できる。
The two-layer foam injection molding apparatus according to the present invention has a first
By switching between the lock means and the second lock means, the primary mold and the secondary mold are switched from co-tightening to the primary mold alone, and the secondary mold for foaming is opened smoothly. Therefore, the two-layer foam molding can be continuously produced by one injection molding apparatus. Also, the first
When the lock means and the second lock means having an elastic deformation member for gripping the tie bar are used, the tie bar can be gripped at an arbitrary position, and troublesome adjustment such as grip position adjustment accompanying a change in mold thickness is unnecessary. Can quickly respond to setup changes.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の2層発泡射出成形装置の前閉状態の縦
断側面図である。
FIG. 1 is a longitudinal sectional side view of a front closed state of a two-layer foam injection molding apparatus of the present invention.
【図2】図1のA−A断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図3】ロック手段の構造と作動を示す図である。FIG. 3 is a view showing the structure and operation of a locking means.
【図4】本発明の2層発泡射出成形装置の全開状態の縦
断側面図である。
FIG. 4 is a vertical sectional side view of the two-layer foam injection molding apparatus of the present invention in a fully opened state.
【図5】本発明の2層発泡射出成形装置の作動図であ
る。
FIG. 5 is an operation diagram of the two-layer foam injection molding apparatus of the present invention.
【符号の説明】[Explanation of symbols]
2 第1射出ユニット 3 固定盤 4 回転盤 5 可動盤 13 タイバー 16 型締シリンダ 20 第1開閉シリンダ 21 第2開閉シリンダ 22 第1ロック手段 23 第2ロック手段 24 型開シリンダ 41 スリーブ(弾性変形部材) 2 First injection unit 3 Fixed plate 4 Rotary plate 5 Movable plate 13 Tie bar 16 Mold clamping cylinder 20 First opening / closing cylinder 21 Second opening / closing cylinder 22 First locking means 23 Second locking means 24 Mold opening cylinder 41 Sleeve (elastic deformation member) )
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B29C 45/00 - 45/84 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) B29C 45/00-45/84

Claims (2)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 2組の対向する射出ユニット間に設けら
    れた固定盤と、該固定盤から突設された複数のタイバー
    と、該タイバーに案内され第2開閉シリンダに接続され
    て開閉自在な可動盤と、該可動盤に設けられ前記タイバ
    ーに対する第2ロック手段と、前記可動盤と前記固定盤
    との間に設けられ前記タイバーに案内され第1開閉シリ
    ンダに接続された開閉自在な回転盤と、該回転盤に設け
    られ前記タイバーに対する第1ロック手段と、前記タイ
    バーを前記固定盤に対して進退させる型締シリンダと、
    前記可動盤と前記回転盤との間を所定間隔開く型開シリ
    ンダとを備えてなる2層発泡射出成形装置。
    1. A fixed plate provided between two sets of opposed injection units, a plurality of tie bars protruding from the fixed plate, and connected to a second opening / closing cylinder guided by the tie bar to be openable and closable. A movable plate, a second locking means for the tie bar provided on the movable plate, and an openable / closable rotary plate provided between the movable plate and the fixed plate and guided by the tie bar and connected to a first opening / closing cylinder First locking means for the tie bar provided on the rotary plate, a mold clamping cylinder for moving the tie bar forward and backward with respect to the fixed plate,
    A two-layer foam injection molding apparatus including a mold opening cylinder that opens a predetermined distance between the movable platen and the rotary plate.
  2. 【請求項2】 前記第1ロック手段及び第2ロック手段
    は、前記タイバーを把持する弾性変形部材を有して油圧
    で作動するものである請求項1記載の2層発泡射出成形
    装置。
    2. The two-layer foam injection molding apparatus according to claim 1, wherein said first locking means and said second locking means have an elastically deformable member for gripping said tie bar and are hydraulically operated.
JP35253593A 1993-12-29 1993-12-29 Two-layer foam injection molding machine Expired - Fee Related JP3343792B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35253593A JP3343792B2 (en) 1993-12-29 1993-12-29 Two-layer foam injection molding machine

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP35253593A JP3343792B2 (en) 1993-12-29 1993-12-29 Two-layer foam injection molding machine
DE4480340A DE4480340C2 (en) 1993-12-29 1994-12-28 Two-layer foam injection molding machine
US08/663,312 US5773049A (en) 1993-12-29 1994-12-28 Two-layer foam injection molding machine
KR1019960703147A KR0169917B1 (en) 1993-12-29 1994-12-28 Two-layer foam injection molding machine
PCT/JP1994/002277 WO1995018002A1 (en) 1993-12-29 1994-12-28 Two-layer foam/injection molding apparatus
GB9613587A GB2300142B (en) 1993-12-29 1994-12-28 Two-layer foam/injection molding apparatus
CA002180126A CA2180126C (en) 1993-12-29 1994-12-28 Two-layer foam injection molding machine
DE4480340T DE4480340T1 (en) 1993-12-29 1994-12-28 Two-layer foam injection molding machine

Publications (2)

Publication Number Publication Date
JPH07195413A JPH07195413A (en) 1995-08-01
JP3343792B2 true JP3343792B2 (en) 2002-11-11

Family

ID=18424731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35253593A Expired - Fee Related JP3343792B2 (en) 1993-12-29 1993-12-29 Two-layer foam injection molding machine

Country Status (1)

Country Link
JP (1) JP3343792B2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20040697A1 (en) * 2004-10-11 2005-01-11 Incos Spa Apparatus and process for injection-compression molding of two-component plastic articles
ITTO20040813A1 (en) * 2004-11-19 2005-02-19 Incos Spa Apparatus and process for injection-compression molding of two-component plastic articles
JP4942088B2 (en) * 2006-09-28 2012-05-30 三菱重工プラスチックテクノロジー株式会社 Two-material injection molding machine and control method
DE102006047763A1 (en) * 2006-10-06 2008-04-10 Kraussmaffei Technologies Gmbh Rotary device with liftable turntable for a horizontal injection molding machine
JP5033091B2 (en) * 2008-09-08 2012-09-26 株式会社日本製鋼所 Multicolor mold
JP4623241B1 (en) * 2009-05-28 2011-02-02 宇部興産機械株式会社 Lamination molding apparatus and lamination molding method
JP5408536B2 (en) * 2009-08-04 2014-02-05 宇部興産機械株式会社 Foam molding method using laminate molding apparatus
EP2330019A1 (en) * 2009-12-04 2011-06-08 Sika Technology AG Baffle reverse molding
JP5630713B2 (en) * 2011-04-12 2014-11-26 宇部興産機械株式会社 Rotating mold support device
AT13306U1 (en) * 2012-03-02 2013-10-15 Engel Austria Gmbh Closing unit for an injection molding machine
US10946570B2 (en) 2014-06-06 2021-03-16 Mitsubishi Heavy Industries Plastic Technology Co., Ltd. Injection molding method and injection molding machine

Also Published As

Publication number Publication date
JPH07195413A (en) 1995-08-01

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