JP2002225090A - Mold apparatus for injection-molding hollow article - Google Patents

Mold apparatus for injection-molding hollow article

Info

Publication number
JP2002225090A
JP2002225090A JP2001024752A JP2001024752A JP2002225090A JP 2002225090 A JP2002225090 A JP 2002225090A JP 2001024752 A JP2001024752 A JP 2001024752A JP 2001024752 A JP2001024752 A JP 2001024752A JP 2002225090 A JP2002225090 A JP 2002225090A
Authority
JP
Japan
Prior art keywords
mold
fixed
cavity
movable
intermediate plate
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
JP2001024752A
Other languages
Japanese (ja)
Other versions
JP3593043B2 (en
Inventor
Kenichi Tsukada
健一 塚田
Yasuo Tsuchiya
康雄 土屋
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.)
Nissei Plastic Industrial Co Ltd
Original Assignee
Nissei Plastic Industrial Co 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 Nissei Plastic Industrial Co Ltd filed Critical Nissei Plastic Industrial Co Ltd
Priority to JP2001024752A priority Critical patent/JP3593043B2/en
Publication of JP2002225090A publication Critical patent/JP2002225090A/en
Application granted granted Critical
Publication of JP3593043B2 publication Critical patent/JP3593043B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C45/0062—Joined by injection 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C2045/0072—Joining parts moulded in separate cavities the parts to be joined being moulded in a stack 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

PROBLEM TO BE SOLVED: To enhance the injection molding properties of a hollow article by injecting and charging a resin from a fixed mold toward a movable mold so as to pierce the intermediate plate interposed between the fixed mold and the movable mold. SOLUTION: The fixed mold 9 having a cavity 11 is attached to a fixed platen 1 in contact with a plate 4 having a plurality of hot runners 5 and 6 on the side of the fixed platen 1. The movable mold 10 having a cavity 12 is attached to a movable platen 2. An intermediate plate 13, which has core molds 14 and 15 provided to the cavity opposed regions of the front and rear surfaces thereof and has projected molds 17 and 18 for forming a secondary cavity around the base ends of the core molds, is held by an intermediate plate operation device so as to freely enter and exit as well as to advance and retreat through the gap between the fixed mold 9 and the movable mold. One of the hot runners 5 and 6 is branched to be connected not only to the cavity 11 of the fixed mold 9 but also to the cavity 12 of the movable mold 10 through the intermediate plate 13.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、固定型と可動型
の間に設けた中間板の出入及び型開閉操作とによって、
中空物品を射出成形する金型装置とに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate plate provided between a fixed die and a movable die, and a die opening and closing operation.
And a mold apparatus for injection molding a hollow article.

【０００２】[0002]

【発明が解決しようとする課題】燃料タンク等の中空物
品を射出成形する場合に用いられる従来の金型装置は、
固定盤側の固定型と、可動盤側の固定型との間に、コア
型と二次キャビティ形成用の凸条型を有する中子型や回
転金型等の中間型を出入自在に設け、その中間型内に穿
設したホットランナーを固定型と可動型の両方に分岐し
て一対の半体を一次射出成形し、その半体を中間型除去
後の固定型と可動型との直接型閉により相互に当接し
て、当接部周囲に生じた二次キャビティに、樹脂を二次
射出充填して中空物品を完成する構成からなる。A conventional mold apparatus used for injection molding a hollow article such as a fuel tank is as follows.
Between the fixed mold on the fixed board side and the fixed mold on the movable board side, an intermediate mold such as a core mold or a rotary mold having a core mold and a convex ridge mold for forming a secondary cavity is provided so as to be able to move in and out, The hot runner drilled in the intermediate mold is branched into both a fixed mold and a movable mold, and a pair of halves are subjected to primary injection molding, and the halves are directly molded into a fixed mold and a movable mold after removing the intermediate mold. It is configured such that the hollow article is completed by injecting a resin into the secondary cavity formed around the abutting portion by secondary injection filling by abutting each other by closing.

【０００３】このような金型装置では、中間型内から固
定型と可動型の両方に、半体成形用の樹脂を射出充填す
ることになることから、中間型内のランナーはホットラ
ンナーとして温度維持する必要がある。また中間型は成
形ごとに出入を繰返すので、そのような中間型に温度維
持手段を施すことは容易ではなく、樹脂のオープンパー
ジもできないことから、熱安定性の悪い材料樹脂による
中空物品の成形に適応し難いものであった。In such a mold apparatus, since both the fixed mold and the movable mold are injection-filled with resin for half-molding from the inside of the intermediate mold, the runner in the intermediate mold is used as a hot runner. Need to be maintained. In addition, since the intermediate mold repeatedly enters and exits each time it is molded, it is not easy to apply temperature maintaining means to such an intermediate mold, and it is not possible to open purge the resin. It was difficult to adapt to.

【０００４】また中子による中間型をスライドして出入
する金型装置にあっては、その中子に射出装置をノズル
タッチしていることから、成形ごとにノズルタッチを繰
り返さなければならず、このため樹脂の糸引きも生じ易
い。しかも１台の射出装置を上下動して樹脂の一次射出
と二次射出を行う構成なので、成形操作が複雑で複数個
の中空物品を同時成形できず、材料樹脂も同一材質のも
のに限定されるなどの課題を有する。Further, in a mold device which slides an intermediate mold by a core, the injection device is nozzle-touched to the core, so that the nozzle touch must be repeated every molding. For this reason, stringing of the resin is also likely to occur. In addition, since one injection device is moved up and down to perform primary injection and secondary injection of the resin, the molding operation is complicated and it is not possible to simultaneously mold a plurality of hollow articles, and the material resin is limited to the same material. Problems such as

【０００５】これに比べて、回転金型を中間型として出
入する金型装置では、回転金型を往復回動により一対の
固定型と可動型との間を交互に出入できるようにして、
回転金型内のホットランナーを、固定型側の両固定型に
分岐したホットランナーと交互に接続し、これにより固
定型側のホットランナーに常時ノズルタッチすることが
できるようにしているが、ホットランナーのゲートの切
換を、回転金型の往復回動により交互に行って、樹脂の
一次射出と二次射出をする構造のため、一対の固定型と
可動型とを備えるものでも、同時に複数個の中空物品の
成形が行えず、また材料樹脂も同一材質のものに限定さ
れるなどの課題を有する。On the other hand, in a mold apparatus which inserts and removes a rotary mold as an intermediate mold, a pair of fixed molds and a movable mold can be alternately moved in and out by reciprocating rotation of the rotary mold.
The hot runner in the rotary mold is alternately connected to the hot runners branched to both fixed molds on the fixed mold side, so that the hot runner on the fixed mold side can always be touched by the nozzle. The gate of the runner is switched alternately by the reciprocating rotation of the rotary mold to perform the primary injection and the secondary injection of the resin. However, there is a problem that the hollow article cannot be molded, and the material resin is limited to the same material.

【０００６】この発明は、上記従来の金型装置における
課題を解決するために考えられたものであって、その目
的は、ホットランナーを複数とし、その一方を固定型と
可動型との間の出入自在な中間板を通すことによって、
中間板におけるランナーの温度維持手段を省略するとと
もに、固定型側のホットランナーからの樹脂のオープン
パージを行えるようにして、熱安定性の悪い材料樹脂に
よる中空物品の射出成形をも可能となし、更には複数の
ホットランナーにより、複数の金型における半体の一次
射出と、半体相互を一体化する二次射出とを同時に行っ
て、同一又は異なった樹脂による中空物品の複数個を同
時に成形することができる新たな中空物品の射出成形用
金型装置を提供することにある。The present invention has been conceived in order to solve the above-mentioned problems in the conventional mold apparatus, and has as its object to provide a plurality of hot runners, one of which is provided between a fixed mold and a movable mold. By passing through an intermediate board that can be freely accessed,
Omitting the means for maintaining the temperature of the runner in the intermediate plate, and enabling the open purging of the resin from the hot runner on the fixed mold side, the injection molding of a hollow article made of a material resin having poor heat stability is not possible. Furthermore, by using a plurality of hot runners, the primary injection of halves in a plurality of molds and the secondary injection of integrating the halves are simultaneously performed, thereby simultaneously forming a plurality of hollow articles of the same or different resins. It is an object of the present invention to provide a new mold apparatus for injection molding of a hollow article.

【０００７】[0007]

【課題を解決するための手段】上記目的によるこの発明
の金型装置は、固定盤側の複数のホットランナーを有す
るプレートと、そのホットランナープレートに当設し
て、固定盤に取付けたキャビティを有する固定型と、可
動盤に取付けたキャビティを有する可動型と、前後面の
キャビティ対向部位にコア型を有し、かつコア型の基端
部周囲に二次キャビティ形成用の凸条型を有する中間板
とその中間板を保持して固定型と可動型との間に出入及
び進退移動させる中間板操作装置とからなり、上記ホッ
トランナーの一方を固定型のキャビティと中間板を通し
て可動型のキャビティとに分岐接続し、他方を固定型の
二次キャビティティ部位に接続してなるというものであ
る。According to the above object, a mold apparatus according to the present invention comprises a plate having a plurality of hot runners on a fixed platen side, and a cavity attached to the hot runner plate and attached to the fixed platen. A fixed mold having a cavity, a movable mold having a cavity attached to a movable platen, a core mold at front and rear surfaces facing the cavity, and a protruding strip mold around the base end of the core mold for forming a secondary cavity. An intermediate plate, and an intermediate plate operating device for holding the intermediate plate and moving it in and out between the fixed die and the movable die, and moving the one of the hot runners through the fixed die cavity and the intermediate plate. And the other is connected to a fixed type secondary cavity part.

【０００８】またこの発明の金型装置は、固定盤側の複
数のホットランナーを有するプレートと、そのホットラ
ンナープレートに当設して、固定盤に並設したキャビテ
ィを有する一対の固定型と、可動盤の固定型対向部位に
並設したキャビティを有する一対の可動型と、前後面の
キャビティ対向部位にコア型を有し、かつコア型の基端
部周囲に二次キャビティ形成用の凸条型を有する中間板
と、その中間板を保持して固定型と可動型との間に出入
及び進退移動させる中間板操作装置とからなり、上記ホ
ットランナーの一方を両固定型のキャビティと中間板を
通して両可動型のキャビティに分岐接続し、他方を両固
定型の二次キャビティ部位に接続して、複数個の中空物
品の同時成形を可能としてなる、というものである。[0008] The mold apparatus according to the present invention further comprises a plate having a plurality of hot runners on the fixed platen side, and a pair of fixed dies provided with the hot runner plate and having cavities juxtaposed to the fixed platen. A pair of movable dies having cavities juxtaposed to the fixed mold opposing portions of the movable platen, and a ridge for forming a secondary cavity around the base end of the core mold having a core mold at the cavity opposing portions on the front and rear surfaces. An intermediate plate having a mold, and an intermediate plate operating device for holding the intermediate plate and moving in and out between the fixed die and the movable die, and moving the hot runner. And the other is connected to the cavity of both movable molds, and the other is connected to the secondary cavity portion of both fixed molds, thereby enabling simultaneous molding of a plurality of hollow articles.

【０００９】さらにこの発明の金型装置は、上記ホット
ランナーの一方を両固定型のキャビティと中間板を通し
て両可動型のキャビティに分岐接続し、他方を固定型と
可動型とのパーティング面に形成したコールドランナー
として、両固定型の二次キャビティティ部位に接続して
なるというものであり、上記複数のホットランナー又は
上記ホットランナーとコールドランナーからキャビティ
に射出充填される樹脂は、同一樹脂又は異色樹脂或いは
異材質樹脂からなる、というものでもある。Further, in the mold apparatus according to the present invention, one of the hot runners is branched and connected to the two movable mold cavities through both the fixed mold cavities and the intermediate plate, and the other is connected to the parting surfaces of the fixed mold and the movable mold. As the formed cold runner, it is connected to both fixed type secondary cavities, and the plurality of hot runners or the resin injected and filled into the cavity from the hot runner and the cold runner are the same resin or It is also made of a different color resin or a different material resin.

【００１０】[0010]

【発明の実施の形態】図１〜図１０は、１個の燃料タン
ク等の中空物品を射出成形する金型装置の実施形態を示
すものである。図中１は型締装置の固定盤、２は同じく
可動盤で、タイバー３，３に通して固定盤１に対し進退
自在に設けてある。1 to 10 show an embodiment of a mold apparatus for injection-molding a hollow article such as a single fuel tank. In the drawing, reference numeral 1 denotes a fixed plate of the mold clamping device, and 2 denotes a movable plate similarly, which is provided to be able to advance and retreat with respect to the fixed plate 1 through tie bars 3 and 3.

【００１１】４は複数のホットランナー５，６を有する
ホットランナープレートで、上記固定盤１の内側面に止
着してある。またホットランナー５，６の各スプルー部
には、２台の射出装置のノズル７，８がそれぞれノズル
タッチして、ホットランナー５，６に、同一又は異色或
いは異材質の樹脂を射出することができるようにしてあ
る。Reference numeral 4 denotes a hot runner plate having a plurality of hot runners 5 and 6, which are fixed to the inner surface of the fixed platen 1. Further, the nozzles 7 and 8 of the two injection devices respectively touch the sprue portions of the hot runners 5 and 6 to inject the same or different color or different material resin into the hot runners 5 and 6. I can do it.

【００１２】９は固定型で、上記ホットランナープレー
ト４に当設して、固定盤１の内側に並設してある。１０
は割型による可動型で、これらの固定型９及び可動型１
０は、開口部が拡径したキャビティ１１，１２を有す
る。Reference numeral 9 denotes a fixed type, which is provided on the hot runner plate 4 and is juxtaposed inside the fixed platen 1. 10
Is a movable mold by a split mold, and these fixed mold 9 and movable mold 1
No. 0 has cavities 11 and 12 whose diameters of the openings are enlarged.

【００１３】１３は固定型９と可動型１０との間に設け
られた中間板で、金型と同一面積の板体からなり、その
前後面のキャビティ対向部位にコア型１４，１５を有
し、これらコア１４，１５と上記キャビティ１１，１２
とにより、図１１に示す中空物品３０の両半体３１，３
２を一次的に成形できるようにしてある。またコア型１
４，１５の基端部周囲には、キャビティ開口と嵌合して
後に二次キャビティを形成する環状の凸条型１７，１８
を有する。Reference numeral 13 denotes an intermediate plate provided between the fixed die 9 and the movable die 10, which is made of a plate having the same area as the die, and has core dies 14 and 15 at front and rear surfaces of the die opposite to the cavity. , These cores 14 and 15 and the cavities 11 and 12
Thus, the two halves 31, 3 of the hollow article 30 shown in FIG.
2 can be primarily molded. Also core type 1
At the periphery of the base end portions of the annular ridges 17 and 18 which are fitted with the cavity openings to form the secondary cavities later.
Having.

【００１４】２０は中間板１３の保持枠で、内側にガイ
ド溝を有する両縦枠２１，２１と上下枠２２，２２とを
長方形に枠組みしたものからなり、両側上下の支持部材
１９，１９をタイバー３，３に摺動自在に嵌挿して、上
部面内と固定型９の型面とが重合位置するように、金型
部位から下側の機台４０内へと縦長に設けてある。Reference numeral 20 denotes a holding frame for the intermediate plate 13, which is formed by forming both the vertical frames 21 and 21 having guide grooves inside and the upper and lower frames 22 and 22 in a rectangular shape, and supporting the upper and lower supporting members 19 and 19 on both sides. It is slidably fitted to the tie bars 3 and 3 and is provided vertically from the mold portion into the lower machine base 40 so that the upper surface and the mold surface of the fixed mold 9 overlap.

【００１５】この保持枠２０の面内には、中間板１３が
両側を縦枠２１，２１に嵌め込んで上下に可動自在に設
けてあり、その中間板１３の金型外の上端両側に、上枠
２２に佇設した左右一対の出入用の油圧シリンダ２４，
２４のピストンロッド２４ａ，２４ａが部材２３をもっ
て連結してあつて、ピストンロッド２４ａ，２４ａの伸
縮作動により、金型間とその下側の金型外とを往復動す
るようにしてある。In the plane of the holding frame 20, an intermediate plate 13 is provided movably up and down with both sides fitted into the vertical frames 21 and 21. A pair of left and right hydraulic cylinders 24 for standing in and out of the upper frame 22;
The 24 piston rods 24a, 24a are connected by a member 23 so that the piston rods 24a, 24a extend and retract to reciprocate between the dies and outside the lower dies.

【００１６】また保持枠２０の上枠２２の中央部には、
固定型９の型取付板９ａの上部に水平に取付けた型開閉
用の油圧シリンダ２５のピストンロッド２５ａが連結し
てあり、そのピストンロッド２５ａの伸縮動作によりタ
イバー３，３をガイドとして、中間板１３の型開閉が行
えるようにしてある。At the center of the upper frame 22 of the holding frame 20,
A piston rod 25a of a hydraulic cylinder 25 for opening and closing the mold, which is horizontally mounted on an upper part of a mold mounting plate 9a of the fixed mold 9, is connected. 13 can be opened and closed.

【００１７】上記ホットランナー５は、上記固定型９の
キャビティ１１側と、上記可動型１０のキャビティ１２
側とに接続するように、２つのランナー５１，５２に分
岐されており、その一方はキャビティ１１に直に接続さ
れ、他方は上記中間板１３に穿設した通孔５２ａと、可
動型１０のパーティング面に分割形成した可動型側のラ
ンナー５２ｂとからなる。The hot runner 5 includes a cavity 11 of the fixed mold 9 and a cavity 12 of the movable mold 10.
It is branched into two runners 51 and 52 so as to be connected to the side, one of which is directly connected to the cavity 11, and the other is a through hole 52 a formed in the intermediate plate 13 and a movable mold 10. And a runner 52b on the movable mold side that is divided on the parting surface.

【００１８】これにより上記ノズル７からホットランナ
ー５に射出された樹脂は、キャビティ１１には直接に、
またキャビティ１２には中間板１３を通して射出充填さ
れ、通孔５２ａからランナー５２ｂに固化して残った樹
脂は、コールドランナー５３として分離して取除くこと
ができるようにしてある。As a result, the resin injected from the nozzle 7 into the hot runner 5 directly enters the cavity 11
In addition, the cavity 12 is injected and filled through the intermediate plate 13, and the resin solidified into the runner 52 b through the through-hole 52 a can be separated and removed as a cold runner 53.

【００１９】上記ホットランナー６は、固定型９の二次
キャビティ部位となるキャビティ１１の開口側部に接続
され、上記ノズル８からホットランナー６に射出された
樹脂が、キャビティ１１に直接に射出充填することがで
きるようにしてある。上記ホットランナー５，６のいず
も、ゲートにはピンゲートが採用され、これにより型開
時に切断が容易に行えるようにある。またランナー相互
の各接続部位も、下流側の開口を縮径形成して接続部位
にずれが生じないようにしてある。The hot runner 6 is connected to the opening side of the cavity 11 serving as a secondary cavity portion of the fixed mold 9, and the resin injected into the hot runner 6 from the nozzle 8 is directly injected into the cavity 11. I can do it. In each of the hot runners 5 and 6, a pin gate is employed as a gate, so that cutting can be easily performed when the mold is opened. Also, the connecting portions of the runners are formed such that the openings on the downstream side are reduced in diameter so that the connecting portions do not shift.

【００２０】なお２６は突出板、２７は突出ピン、２
８，２８は上記可動型１０の開閉シリンダで、可動型１
０の型取付板１０ａの上下に一体に設けた型保持板２
９，２９に取付けてある。Reference numeral 26 denotes a protruding plate, 27 denotes a protruding pin, 2
Reference numerals 8 and 28 denote opening / closing cylinders of the movable mold 10.
Mold holding plate 2 provided integrally above and below the 0 mold mounting plate 10a.
9 and 29.

【００２１】図５〜図１０は、上記構成の金型装置によ
る中空物品３０の成形工程を順に示すものである。先ず
図１に示す型開状態において、上記油圧シリンダ２５に
より保持枠２０を中間板１３と共に板面が固定型９の型
面に接するところまで後退移動し、キャビティ１１とコ
ア型１４との型閉を行う。次に可動盤２を前進移動して
可動型１０の型面を中間板１３の板面に当接し、キャビ
ティ１２とコア型１５の型閉を行う。FIGS. 5 to 10 show the steps of forming the hollow article 30 by the mold apparatus having the above-described structure. First, in the mold open state shown in FIG. 1, the holding frame 20 is moved backward together with the intermediate plate 13 by the hydraulic cylinder 25 until the plate surface comes into contact with the mold surface of the fixed mold 9, and the mold between the cavity 11 and the core mold 14 is closed. I do. Next, the movable platen 2 is moved forward to bring the mold surface of the movable mold 10 into contact with the plate surface of the intermediate plate 13 to close the mold of the cavity 12 and the core mold 15.

【００２２】図５は、その型閉状態を示すもので、固定
型９と可動型１０との間には中間板１３が介在するた
め、キャビティ１１，１２は中空物品３０の両半体の形
態を有するキャビティに対向形成され、そのキャビティ
の開口縁内に上記凸条型１７，１８が嵌合位置するとと
もに、上記分岐ランナー５２が中間板１３の通孔５２ａ
を介して可動型側のランナー５２ｂと連通し、ホットラ
ンナー５からキャビティ１２にも溶融状態で樹脂の射出
充填が行えるようになる。FIG. 5 shows the closed state of the mold. Since the intermediate plate 13 is interposed between the fixed mold 9 and the movable mold 10, the cavities 11 and 12 are formed in both halves of the hollow article 30. The ridges 17 and 18 are fitted in the opening edges of the cavity, and the branch runner 52 is connected to the through hole 52 a of the intermediate plate 13.
The hot runner 5 communicates with the runner 52b on the movable mold side through the through hole, so that the resin can be injected and filled into the cavity 12 in a molten state.

【００２３】図６はノズル７からホットランナー５に樹
脂を射出した状態を示すもので、ホットランナー５に射
出された溶融状態の樹脂は分岐ランナー５１，５２から
固定型側と可動型側の両方のキャビティ１１，１２に同
時に射出充填されて、中空物品３０の半体３１，３２を
それぞれ対向形成する。また開口縁内の凸条型１７，１
８により、半体３１，３２の開口縁に近接した外周囲に
フランジ３３，３４が突出形成される。FIG. 6 shows a state in which the resin is injected from the nozzle 7 to the hot runner 5. The molten resin injected into the hot runner 5 is supplied from the branch runners 51 and 52 to both the fixed mold side and the movable mold side. The cavities 11 and 12 are simultaneously injected and filled to form the halves 31 and 32 of the hollow article 30 facing each other. Also, the ridges 17 and 1 in the opening edge are provided.
8, the flanges 33 and 34 are formed so as to protrude around the outer periphery close to the opening edges of the halves 31 and 32.

【００２４】図７は、半体３１，３２の射出成形の一次
的な離型状態を示すもので、その離型は先ず、上記可動
盤２を後退移動して可動型１０を中間板１３から離し、
半体３２をコア型１５から離型してキャビティ１２に残
存させる。次に、図１に示す上記油圧シリンダ２５のピ
ストンロッド２５ａを伸長作動して、保持枠２０を前進
移動し、これにより中間板１３を固定型９から離して半
体３１をコア型１４から離型し、キャビティ１１に残存
させる。FIG. 7 shows a primary release state of the injection molding of the halves 31, 32. In the release, first, the movable platen 2 is moved backward to move the movable die 10 from the intermediate plate 13. Release
The half body 32 is released from the core mold 15 and remains in the cavity 12. Next, the piston rod 25a of the hydraulic cylinder 25 shown in FIG. 1 is extended to move the holding frame 20 forward, whereby the intermediate plate 13 is separated from the fixed mold 9 and the half body 31 is separated from the core mold 14. It is molded and left in the cavity 11.

【００２５】上記コア型１４がキャビティ１１から完全
に抜け出た所で、上記油圧シリンダ２４のピストンロッ
ド２４ａを伸長作動して、中間板１３を下方へ移動し、
固定型９と可動型１０との間から下側に送り出して除
き、両金型が対面するようにセットする。When the core mold 14 has completely exited from the cavity 11, the piston rod 24a of the hydraulic cylinder 24 is extended to move the intermediate plate 13 downward.
The mold is sent downward from the space between the fixed mold 9 and the movable mold 10 and set so that both molds face each other.

【００２６】この離型時に固化した上記通孔５２ａの樹
脂は、型開力により分岐ランナー５２の溶融状態の樹脂
と、可動側ランナー５２ｂのコールドランナー５３とし
て固化して残った樹脂の両方から切断されて、そのまま
通孔５２ａに残る。また中空物品３０にフイルター等の
インサートが必要な場合には、図では省略したが、この
型開後に半体３１，３２のいずれか一方又は両方にイン
サートを行う。The resin in the through-hole 52a solidified at the time of release from the mold is cut from both the resin in the molten state of the branch runner 52 by the mold opening force and the resin solidified as the cold runner 53 of the movable side runner 52b. Then, it remains in the through hole 52a. When an insert such as a filter is required for the hollow article 30, the insert is inserted into one or both of the halves 31 and 32 after opening the mold, although not shown in the drawing.

【００２７】図８は、固定型９と可動型１０の再型閉状
態を示すもので、中間板１３を金型外に除いたのち、可
動盤２を再前進すると可動型１０が固定型９と型閉し
て、それらのキャビティ内の半体３１，３２が相互に開
口端を接し合うとともに、接合端周囲のフランジ３３，
３４の間に、上記凸条型１７，１８の抜き後による二次
キャビティ３５が生じる。この二次キャビティ３５の側
面には上記ホットランナー６のゲートが開口している。FIG. 8 shows the closed state of the fixed mold 9 and the movable mold 10 in a closed state. After the intermediate plate 13 is removed from the outside of the mold, and the movable platen 2 is advanced again, the movable mold 10 is moved to the fixed mold 9. And the halves 31, 32 in the cavities contact each other at the open ends, and the flanges 33,
34, a secondary cavity 35 is formed after the protrusions 17 and 18 are removed. The gate of the hot runner 6 is opened on the side surface of the secondary cavity 35.

【００２８】再型閉後に上記ノズル８からホットランナ
ー６に溶融状態で射出した樹脂は、ゲートから二次キャ
ビティ３５に射出充填されてフランジ３３，３４間を埋
め、半体３１，３２の対面接合部を気密にシールすると
共に半体３１，３２を不可分一体に接合して、中空物品
３０を完成する結合帯３６となる。The resin injected from the nozzle 8 into the hot runner 6 in a molten state after the remolding is closed is injected and filled from the gate into the secondary cavity 35 to fill the space between the flanges 33 and 34 and to join the half bodies 31 and 32 face to face. The portions are hermetically sealed and the halves 31, 32 are inseparably joined together to form a joining band 36 for completing the hollow article 30.

【００２９】図９及び図１０は、中空物品３０の離型状
態を示すもので、成形完了後に上記可動盤１０を可動型
１２と共に後退移動して、中空物品３０がキャビティ１
１から離型するように型開を行う。次に型開位置にて可
動型１０の型開を行ってから、上記突出板２６を前進作
動して突出ピン２７により中空物品３０を、側部のコー
ルドランナー５３と一緒に可動型１０から同時に突き出
して離型する。FIGS. 9 and 10 show a state in which the hollow article 30 is released from the mold. After the molding is completed, the movable plate 10 is moved back together with the movable mold 12 so that the hollow article 30 is placed in the cavity 1.
The mold is opened so as to be released from 1. Next, after the movable mold 10 is opened at the mold open position, the protruding plate 26 is operated forward, and the hollow article 30 is simultaneously removed from the movable mold 10 together with the side cold runner 53 by the protruding pin 27. Protrude and release.

【００３０】また図では省略したが、上記中間板１３の
通孔５２ａに残った樹脂は、中空物品３０の離型中にバ
キュームなどにより除去することができる。したがっ
て、中空物品３０の離型後に、上記油圧シリンダ２４の
ピストンロッド２４ａを縮小作動して、中間板１３を上
部面内に戻し、上記油圧シリンダ２５による保持枠２０
の固定型側への移動と、可動盤２の前進移動とによって
次回の成形の型閉を行うことができ、これにより連続し
て中空物品３０の成形を行うことができる。Although not shown in the drawing, the resin remaining in the through-hole 52a of the intermediate plate 13 can be removed by vacuum or the like during the release of the hollow article 30. Accordingly, after the hollow article 30 is released, the piston rod 24a of the hydraulic cylinder 24 is contracted to return the intermediate plate 13 to the upper surface, and the holding frame 20 is held by the hydraulic cylinder 25.
By moving the movable platen 2 toward the fixed mold side and moving the movable platen 2 forward, the mold for the next molding can be closed, whereby the hollow article 30 can be continuously molded.

【００３１】図１２〜図１４は、上記中空物品３０の複
数を同時に射出成形できるこの発明の第２実施形態を示
すもので、基本的には上記第１実施形態と同一であり、
その相違は上記固定型９と可動型１０の一対を、固定盤
１と可動盤２に並設するとともに、その一対の金型にわ
たり対面位置するように、上記中間板１３を保持枠２０
と共に横長に配置し、その中間板１３の２個所のキャビ
ティ対向部位の表裏面に、上記コア型１４，１５と基端
部周囲の環状の凸状型１７，１８とを設けたことにあ
る。FIGS. 12 to 14 show a second embodiment of the present invention in which a plurality of the hollow articles 30 can be injection-molded at the same time. The second embodiment is basically the same as the first embodiment.
The difference is that a pair of the fixed die 9 and the movable die 10 are arranged side by side on the fixed plate 1 and the movable plate 2, and the intermediate plate 13 is held by the holding frame 20 so as to face each other over the pair of dies.
The core molds 14 and 15 and the annular convex molds 17 and 18 around the base end are provided on the front and back surfaces of the two cavity-facing portions of the intermediate plate 13.

【００３２】この第２実施形態では、図１２に示す型開
状態において、第１実施形態と同様に、図示しない油圧
シリンダより保持枠２０を中間板１３を後退移動する
と、板面が一対の固定型９，９の型面に接して、キャビ
ティ１１とコア型１４とがそれぞれ型閉する。次に可動
盤２を前進移動して一対の可動型１０の型面を中間板１
３の板面に当接すると、キャビティ１２とコア型１５と
がそれぞれ型閉して、一対の固定型９，９と可動型１
０，１０は、中間板１３を挟んで同時に型閉する。In the second embodiment, as in the first embodiment, when the holding frame 20 is moved backward from the hydraulic cylinder (not shown) through the intermediate plate 13 in the mold open state shown in FIG. The cavity 11 and the core mold 14 are closed in contact with the mold surfaces of the molds 9, 9, respectively. Next, the movable platen 2 is moved forward so that the mold surfaces of the pair of movable
3, the cavity 12 and the core mold 15 are closed respectively, and the pair of fixed dies 9, 9 and the movable mold 1 are closed.
The molds 0 and 10 are simultaneously closed with the intermediate plate 13 interposed therebetween.

【００３３】図１３は、この型閉状態と樹脂の射出状態
とを半部づつ示すもので、型閉により各キャビティ１
１，１２は、上半部に示すように、上記中空物品３０の
両半体の形態を有するキャビティに対向形成され、その
キャビティの開口縁内に上記凸条型１４，１５が嵌合位
置し、また一対の金型ごとに分岐ランナー５２が中間板
１３の通孔５２ａを介して可動型側のランナー５２ｂと
連通し、ホットランナー５からキャビティ１２にも樹脂
の射出充填が行えるようになる。FIG. 13 shows the mold-closed state and the resin injection state by half.
As shown in the upper half, the upper and lower halves of the hollow article 30 are formed so as to face each other, and the convex ridges 14 and 15 are fitted in the opening edges of the cavity. In addition, the branch runner 52 communicates with the runner 52b on the movable mold side through the through hole 52a of the intermediate plate 13 for each pair of molds, so that the hot runner 5 can perform injection filling of the cavity 12 with the resin.

【００３４】そこで型閉後に型締を行って、ノズル７か
らホットランナー５に溶融状態の樹脂を射出すると、樹
脂は分岐ランナー５１，５２から固定型側と可動型側の
両方のキャビティ１１，１２に同時に射出充填されて、
複数の中空物品３０の半体３１，３２を対向形成する。
また開口縁内の凸条型１７，１８により、半体３１，３
２の開口縁に近接した外周囲にフランジ３３，３４が突
出形成される。Then, after the mold is closed, the mold is closed, and the molten resin is injected from the nozzle 7 into the hot runner 5. When the resin is injected from the branch runners 51 and 52, the cavities 11 and 12 on both the fixed mold side and the movable mold side are formed. At the same time injection filling,
The halves 31, 32 of the plurality of hollow articles 30 are formed facing each other.
Also, the halves 31, 3 are formed by the ridges 17, 18 in the opening edge.
Flanges 33 and 34 are formed to protrude from the outer periphery near the opening edge of the second.

【００３５】上記半体３１，３２を射出成形したのち、
上記第１実施形態と同様に一次的な離型を行い、半体３
１，３２を各コア型１４，１５から離型して、両方のキ
ャビティ１１，１２に残存させ、さらに中間板１３を金
型間から下側に除いたのち、可動盤２を前進移動する
と、一対の固定型９と可動型１０とがそれぞれ同時に型
閉する。After injection molding of the halves 31, 32,
Primary release is performed in the same manner as in the first embodiment, and the half 3
When the movable platen 2 is moved forward after the molds 1 and 32 are released from the core molds 14 and 15 and are left in the cavities 11 and 12, and the intermediate plate 13 is removed from below between the molds. The pair of fixed molds 9 and movable molds 10 are closed at the same time.

【００３６】この離型時に固化した上記通孔５２ａの樹
脂は、型開力により分岐ランナー５２の溶融状態の樹脂
と、可動側ランナー５２ｂのコールドランナー５３とし
て固化して残った樹脂の両方から切断されて、そのまま
通孔５２ａに残る。また中空物品３０にフイルター等の
インサートが必要な場合には、図では省略したが、この
型開後に半体３１，３２のいずれか一方又は両方にイン
サートを行う。The resin in the through hole 52a solidified at the time of release from the mold is cut from both the resin in the molten state of the branch runner 52 by the mold opening force and the resin solidified as the cold runner 53 of the movable side runner 52b. Then, it remains in the through hole 52a. When an insert such as a filter is required for the hollow article 30, the insert is inserted into one or both of the halves 31 and 32 after opening the mold, although not shown in the drawing.

【００３７】図１４は、この二次的な型閉状態と樹脂の
射出状態とを半部づつ示すもので、一対の固定型９，９
と一対の可動型１０，１０の再型閉により、キャビティ
内の半体３１，３２が相互に開口端を接し合うととも
に、接合端周囲のフランジ３３，３４の間に、上記凸条
型１５，１６の抜き後による二次キャビティ３５が生じ
る。この二次キャビティ３５の側面には上記ホットラン
ナー６のゲートが開口している。FIG. 14 shows the secondary mold closed state and the resin injection state by half, and shows a pair of fixed molds 9 and 9.
The molds of the pair of movable dies 10 and 10 are closed again, so that the halves 31 and 32 in the cavity are in contact with each other at the open ends, and between the flanges 33 and 34 around the joint end, the convex strip dies 15 and A secondary cavity 35 is created after the removal of 16. The gate of the hot runner 6 is opened on the side surface of the secondary cavity 35.

【００３８】再型閉後に上記ノズル８からホットランナ
ー６に射出した溶融状態の樹脂は、両方の固定型９，９
のゲートから、同時に二次キャビティ３５，３５に射出
充填されてフランジ３３，３４間を埋め、半体３１，３
２の対面接合部を気密にシールすると共に半体３１，３
２を不可分一体に接合して中空物品３０を完成する結合
帯３６となる。After the mold is closed, the molten resin injected into the hot runner 6 from the nozzle 8 is supplied to both the fixed molds 9 and 9.
From the gate, the secondary cavities 35, 35 are simultaneously injected and filled to fill the gaps between the flanges 33, 34, and the halves 31, 3
2 and the half joints 31 and 3
2 are inseparably joined to form a joining band 36 for completing the hollow article 30.

【００３９】図１５は、複数の中空物品３０，３０の離
型状態を示すもので、成形完了後に上記可動盤２を可動
型１０と共に後退移動して、中空物品３０，３０がキャ
ビティ１１，１１から離型するように型開を行う。次に
型開位置にて可動型１０の型開を行ってから、上記突出
板２６を前進作動して突出ピン２７により中空物品３
０，３０を同時に離型する。その中空物品３０，３０の
離型中又は離型後に、上記中間板１３の通孔５２ａに残
った樹脂の除去をバキュームなどにより行う。FIG. 15 shows a state in which the plurality of hollow articles 30, 30 are released. After the molding is completed, the movable platen 2 is moved backward together with the movable mold 10, and the hollow articles 30, 30 are moved into the cavities 11, 11. Open the mold so that it is released from the mold. Next, after the movable mold 10 is opened at the mold opening position, the protruding plate 26 is operated forward and the hollow article 3 is
0 and 30 are released simultaneously. During or after the release of the hollow articles 30, 30, the resin remaining in the through holes 52a of the intermediate plate 13 is removed by vacuum or the like.

【００４０】そして、中空物品３０，３０の離型後に、
第１実施形態と同様に中間板１３を保持枠２０の上部面
内に戻し、その後の保持枠２０の固定型側への移動と、
可動盤２の前進移動とによって、工程は次回の成形の型
閉に移行する。したがって、一対の金型における型開閉
及び射出充填を一次と二次とに分けて同時に行えること
から、金型数に等しい数の中空物品３０を容易に同時成
形することができる。Then, after releasing the hollow articles 30, 30,
As in the first embodiment, the intermediate plate 13 is returned into the upper surface of the holding frame 20, and then the holding frame 20 is moved to the fixed mold side;
By moving the movable platen 2 forward, the process shifts to mold closing for the next molding. Therefore, the mold opening and closing and the injection filling in the pair of molds can be simultaneously performed separately for primary and secondary, so that the hollow articles 30 equal in number to the molds can be easily molded simultaneously.

【００４１】図１６〜図１９に示す第３実施形態は、竪
型成形機でも同時に複数個の中空物品３０，３０が成形
できるようにしたものである。この実施形態と第１及び
第２実施形態との相違は、固定型９と可動型１０のそれ
ぞれが一対のキャビティ１１，１１及び１２，１２を備
え、機台上の型置盤４１と、その上方に昇降自在に設け
られた可動盤２とに取付けられる関係上、上記中間板１
３の開閉及び移動装置が、固定型９の型取付板９ａの上
に縦に設置した点と、上記結合帯３６のランナーが固定
型９と可動型１０のパーティング面にコールドランナー
６１として設けられている点である。In the third embodiment shown in FIGS. 16 to 19, a plurality of hollow articles 30, 30 can be formed simultaneously by a vertical molding machine. The difference between this embodiment and the first and second embodiments is that each of the fixed mold 9 and the movable mold 10 has a pair of cavities 11, 11 and 12, 12, and a mold table 41 on the machine base, The intermediate plate 1 is attached to a movable platen 2 which can be raised and lowered so as to be movable upward.
The opening / closing and moving device of 3 is installed vertically on the mold mounting plate 9a of the fixed mold 9, and the runners of the connecting band 36 are provided as cold runners 61 on the parting surfaces of the fixed mold 9 and the movable mold 10. It is a point that is.

【００４２】上記中間板１３の保持枠２０は、内側にガ
イド溝を有する両枠２１，２１を、下側に横架した逆Ｌ
型の受け桟４２の両端に止着して、長方形に枠組みした
ものからなり、その両枠２１，２１の外側中央を、型置
盤４１上の型取付板９ａに佇設したガイド部材４３，４
３に、上下動自在に嵌合するとともに、受け桟４２の中
央部に、上記型取付板９ａの固定型側部に立設した開閉
用の上記油圧シリンダ２５のピストンロッド２５ａを連
結して、片側面内と固定型９の型面とが重合位置するよ
うに、金型部位から側方に横長に設けてある。The holding frame 20 of the intermediate plate 13 is formed by inverting both frames 21 and 21 having guide grooves inside on the lower side.
A guide member 43, which is fixed to both ends of a receiving tray 42 of a mold and is framed in a rectangular shape, and the center of the outer sides of the two frames 21, 21 stands on the mold mounting plate 9a on the mold placing plate 41, 4
3 and a piston rod 25a of the hydraulic cylinder 25 for opening and closing, which is erected on the fixed die side of the die mounting plate 9a, is connected to the center of the receiving bar 42 at the center thereof. It is provided laterally laterally from the mold portion so that the inside of one side and the mold surface of the fixed mold 9 overlap each other.

【００４３】この保持枠２０の面内に、上記中間板１３
が両側を両枠２１，２１に嵌め込んで左右に可動自在に
設けてあり、その中間板１３の金型外の両側には出入ロ
ッド４４，４４が側方に長く取付けてある。また受け桟
４２の中央部には、出入用の上記油圧シリンダ２４が外
方へ長く水平に取付けてあり、そのピストンロッド２４
ａに出入ロッド４４，４４にわたり止着した横架材４５
が連結してあって、該ピストンロッド２４ａの伸縮によ
り、中間板１３が出入ロッド４４，４４と共に左右に移
動して、金型の内外に出入するようにしてある。The intermediate plate 13 is provided in the plane of the holding frame 20.
Are fitted in both frames 21 and 21 so as to be movable to the left and right. On both sides of the intermediate plate 13 outside the mold, access rods 44 and 44 are long attached to the sides. In the center of the receiving bar 42, the hydraulic cylinder 24 for access is long and horizontally mounted outward, and its piston rod 24
A horizontal member 45 fixed to a through the in / out rods 44,44
The intermediate plate 13 is moved right and left together with the in / out rods 44 and 44 by the expansion and contraction of the piston rod 24a so as to enter and exit the mold.

【００４４】上記ホットランナープレート４は、上記固
定型９のキャビティ１１側と、上記可動型１０のキャビ
ティ１２側とに接続するように、２つのランナー５１，
５２に分岐されたホットランナー５と、固定型９と可動
型１０のパーティング面にわたり設けたコールドランナ
ー６１とを有し、そのコールドランナー６１のゲートは
両固定型９，９の二次キャビティ部位に接続してある。The hot runner plate 4 has two runners 51, 52 connected to the cavity 11 of the fixed mold 9 and the cavity 12 of the movable mold 10.
52, a cold runner 61 provided over the parting surfaces of the fixed mold 9 and the movable mold 10, and the gate of the cold runner 61 has a secondary cavity portion of the fixed molds 9, 9. Connected to

【００４５】このような竪型の金型装置においても、そ
の型開閉及び離型操作は上記第１及び第２実施形態と同
様で、一対の金型の並設により同時に複数個の中空物品
３０，３０の同時成形を行うことができる。In such a vertical mold apparatus, the opening, closing, and releasing operations of the mold are the same as in the first and second embodiments, and a plurality of hollow articles 30 are simultaneously arranged by arranging a pair of molds. , 30 can be formed simultaneously.

【００４６】この第３実施形態では、図１６に示す型開
状態において、第１及び第２実施形態と同様に、油圧シ
リンダ２５より保持枠２０を降下すると、中間板１３の
板面が固定型９の型面に接してキャビティ１１とコア型
１４とがそれぞれ型閉する。次に可動盤２を降下して一
対の可動型１０，１０の型面を中間板１３の板面に当接
すると、キャビティ１２とコア型１５とがそれぞれ型閉
して、固定型９と可動型１０は中間板１３を挟んで同時
に型閉する。In the third embodiment, when the holding frame 20 is lowered from the hydraulic cylinder 25 in the mold open state shown in FIG. 16 as in the first and second embodiments, the plate surface of the intermediate plate 13 is fixed. The cavity 11 and the core mold 14 are closed respectively in contact with the mold surface 9. Next, when the movable platen 2 is lowered to bring the mold surfaces of the pair of movable dies 10 and 10 into contact with the plate surface of the intermediate plate 13, the cavity 12 and the core mold 15 are closed respectively, and the fixed mold 9 and the movable mold 9 are moved. The mold 10 is simultaneously closed with the intermediate plate 13 interposed therebetween.

【００４７】図１８は、この型閉状態と樹脂の射出状態
とを半部づつ示すもので、型閉により各キャビティ１
１，１２は、左半部に示すように、上記中空物品３０の
両半体の形態を有するキャビティに対向形成され、その
キャビティの開口縁内に上記凸条型１７，１８が嵌合位
置し、また一対の金型ごとに分岐ランナー５２が中間板
１３の通孔５２ａを介して可動型側のランナー５２ｂと
連通し、ホットランナー５からキャビティ１２にも樹脂
の射出充填が行えるようになる。FIG. 18 shows the mold closed state and the resin injection state in half, respectively.
As shown in the left half, the first and second halves 1 and 12 are formed to face opposite cavities of the hollow article 30 in the form of both halves. In addition, the branch runner 52 communicates with the runner 52b on the movable die side through the through hole 52a of the intermediate plate 13 for each pair of molds, so that the hot runner 5 can also inject and fill the cavity 12 with the resin.

【００４８】このような型閉後に上記ノズル７からホッ
トランナー５に溶融状態の樹脂を射出すると、右半部に
示すように、樹脂は分岐ランナー５１，５２から固定型
側と可動型側の両方のキャビティ１１，１２に同時に射
出充填されて、複数の中空物品３０の半体３１，３２を
それぞれ対向形成する。また開口縁内の凸条型１７．１
８により、半体３１，３２の開口縁に近接した外周囲に
フランジ３３，３４が突出形成される。When the molten resin is injected from the nozzle 7 into the hot runner 5 after the mold is closed, as shown in the right half, the resin flows from the branch runners 51 and 52 to both the fixed mold side and the movable mold side. Are injected at the same time into the cavities 11 and 12 to form the halves 31 and 32 of the plurality of hollow articles 30 facing each other. Also, the ridge 17.1 in the opening edge
8, the flanges 33 and 34 are formed so as to protrude around the outer periphery close to the opening edges of the halves 31 and 32.

【００４９】上記半体３１，３２を射出成形したのち、
上記第１実施形態と同様に一次的な離型を行うと、図１
９に示すように、一対の各半体３１，３２が各コア型１
４，１５から離型して、両方のキャビティ１１，１２に
残存する。さらに中間板１３を金型間から側方に除いた
のち、可動盤２を前進移動すると、図２０に示すよう
に、一対の固定型９と可動型１０とがそれぞれ同時に型
閉して、パーティング面に上記コールドランナー６１が
形成される。After injection molding of the halves 31, 32,
When the primary release is performed in the same manner as in the first embodiment, FIG.
As shown in FIG. 9, each of the pair of halves 31 and 32 is
The mold is released from the cavities 4 and 15 and remains in both the cavities 11 and 12. Further, when the movable platen 2 is moved forward after the intermediate plate 13 is removed laterally from between the dies, as shown in FIG. 20, the pair of fixed dies 9 and the movable dies 10 are closed at the same time, respectively. The cold runner 61 is formed on the running surface.

【００５０】図１９は、この二次的な型閉状態と樹脂の
射出状態とを半部づつ示すもので、固定型９と可動型１
０の再型閉により、キャビティ内の半体３１，３２が相
互に開口端を接し合うとともに、接合端周囲のフランジ
３３，３４の間に、上記凸条型１７，１８の抜き後によ
る二次キャビティ３５が生じる。この二次キャビティ３
５の側面には上記コールドランナー６１のゲートが開口
している。FIG. 19 shows the secondary mold closed state and the resin injection state by half. The fixed mold 9 and the movable mold 1 are shown in FIG.
As a result of the mold re-closure of 0, the halves 31, 32 in the cavity are in contact with each other at the open ends, and a secondary space is formed between the flanges 33, 34 around the joint ends after the protrusions 17, 18 are removed. A cavity 35 is created. This secondary cavity 3
The gate of the cold runner 61 is opened on the side surface of the cold runner 5.

【００５１】再型閉後に上記ノズル８からコールドラン
ナー６１に射出した溶融状態の樹脂は、両方の固定型
９，９のゲートから、同時に二次キャビティ３５，３５
に射出充填されてフランジ３３，３４間を埋め、半体３
１，３２の対面接合部を気密にシールすると共に半体３
１，３２を不可分一体に接合して中空物品３０を完成す
る結合帯３６となる。After the mold is closed, the molten resin injected from the nozzle 8 into the cold runner 61 is simultaneously discharged from the gates of both fixed dies 9 and 9 to the secondary cavities 35 and 35.
To fill the space between the flanges 33 and 34,
The airtight sealing of the facing joints 1 and 32 and the half body 3
The joining band 36 is formed by inseparably joining the members 1 and 32 to complete the hollow article 30.

【００５２】図２１は、複数の中空物品３０，３０の離
型状態を示すもので、成形完了後に上記可動盤２を可動
型１０と共に上昇移動して、中空物品３０，３０がキャ
ビティ１１，１１から離型するように型開を行い。次に
型開位置にて可動型１０の型開を行ってから、上記突出
板２６を前進作動して突出ピン２７により中空物品３
０，３０を同時に突き出すと、中空物品３０と一緒に上
記コールドランナー５３とパーティング面にて形成され
たコールドランナー６２とが離型する。FIG. 21 shows the mold release state of the plurality of hollow articles 30, 30. After the completion of the molding, the movable plate 2 is moved up together with the movable mold 10, and the hollow articles 30, 30 are moved into the cavities 11, 11. Open the mold so that it is released from the mold. Next, after the movable mold 10 is opened at the mold opening position, the protruding plate 26 is operated forward and the hollow article 3 is
When 0 and 30 are simultaneously projected, the cold runner 53 and the cold runner 62 formed on the parting surface are released together with the hollow article 30.

【００５３】そして、中空物品３０，３０の離型後に、
第１実施形態と同様に中間板１３を保持枠２０の上部面
内に戻し、その後の保持枠２０の固定型側への移動と、
可動盤２の前進移動とによって、工程は次回の成形の型
閉に移行する。したがって、竪型においても一対の金型
における型開閉及び射出充填を一次と二次とに分けて同
時に行えるので、金型数に等しい数の中空物品３０を容
易に同時成形することがてきる。Then, after releasing the hollow articles 30, 30,
As in the first embodiment, the intermediate plate 13 is returned into the upper surface of the holding frame 20, and then the holding frame 20 is moved to the fixed mold side;
By moving the movable platen 2 forward, the process shifts to mold closing for the next molding. Therefore, even in the vertical mold, the mold opening / closing and injection filling in the pair of molds can be simultaneously performed separately for primary and secondary, so that the hollow articles 30 equal in number to the molds can be easily molded at the same time.

【００５４】上述のように、この発明では樹脂の射出充
填を中空物品の半体成形用と、半体結合用として個々に
キャビティへの樹脂の射出充填を可能に構成したことか
ら、そこに用いられる樹脂も、同一樹脂に限定されず、
異色樹脂又は異材質樹脂とすることができ、また中間板
及び可動型側のランナーをコールドランナーとしたこと
によって、樹脂のオープンバージが可能となり、熱安定
性の悪い材料樹脂における対応も容易となって材料樹脂
の利用範囲が広がる。As described above, in the present invention, resin injection filling is used for molding a hollow article into a half body, and resin is individually injected into a cavity for joining a half body. Is not limited to the same resin,
It is possible to use different color resin or different material resin, and by using cold runner for the intermediate plate and movable mold side, open barge of resin becomes possible, and it is easy to respond to material resin with poor thermal stability. As a result, the range of use of the material resin is expanded.

【００５５】さらにまた、中間板を貫通して固定型側か
ら可動型側へ樹脂を射出充填できるようにしたので、中
間板を金型側方へ移動して出入を行うものであっても、
ノズルを常時タッチさせたまま成形を行うことができ、
金型数を増して同時に複数個の中空物品の成形も容易に
行えることから生産性が向上する。また個々のキャビテ
ィ及びコア型が専用となるため、半体成形樹脂と結合樹
脂が同一材料樹脂であるときには、形態の異なる中空成
形品のファミリー取りへの展開も可能となる。Further, since the resin can be injected and filled from the fixed mold side to the movable mold side by penetrating the intermediate plate, even if the intermediate plate is moved to the side of the mold to enter and exit,
Molding can be performed while the nozzle is always touched,
Since the number of molds can be increased and a plurality of hollow articles can be easily formed at the same time, productivity is improved. Further, since the individual cavities and core molds are dedicated, when the half-molded resin and the binding resin are the same material resin, it is possible to develop a hollow molded product having a different form into a family.

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

【図１】 この発明に係わる中空物品の射出成形用金型
装置の型開時における縦断側面図である。FIG. 1 is a vertical sectional side view of a mold apparatus for injection molding a hollow article according to the present invention when the mold is opened.

【図２】 同上の平断面図である。FIG. 2 is a plan sectional view of the same.

【図３】 図１Ａ−Ａ線における固定型側の正面図であ
る。FIG. 3 is a front view of the fixed mold side taken along the line AA of FIG. 1;

【図４】 同じくＡ−Ａ線における可動型側の正面図で
ある。FIG. 4 is a front view of the movable mold side along line AA.

【図５】 中空物品の半体成形状態を示す略示縦断側面
図である。FIG. 5 is a schematic vertical sectional side view showing a half-molded state of a hollow article.

【図６】 同上の略示平断面図である。FIG. 6 is a schematic plan sectional view of the same.

【図７】 中空物品の半体成形後の型開状態を示す略示
平断面図である。FIG. 7 is a schematic plan cross-sectional view showing a mold opened state after half-molding of a hollow article.

【図８】 再型閉による二次キャビティの形成状態を示
す略示平断面図である。FIG. 8 is a schematic plan sectional view showing a state in which a secondary cavity is formed by re-mold closing.

【図９】 中空物品完成後の離型状態を示す略示平断面
図である。FIG. 9 is a schematic plan sectional view showing a release state after completion of the hollow article.

【図１０】 同上の略示縦断側面図である。FIG. 10 is a schematic vertical sectional side view of the same.

【図１１】 射出成形された中空物品の１実施形態の縦
断面図である。FIG. 11 is a longitudinal sectional view of one embodiment of an injection-molded hollow article.

【図１２】 複数の中空物品の同時成形が可能なこの発
明に係る金型装置の型開時における略示平断面図であ
る。FIG. 12 is a schematic cross-sectional plan view of a mold apparatus according to the present invention capable of simultaneously molding a plurality of hollow articles when the mold is opened.

【図１３】 中空物品の半体成形状態を示す略示平断面
図である。FIG. 13 is a schematic plan sectional view showing a half-molded state of a hollow article.

【図１４】 再型閉により形成された二次キャビティと
二次射出の両方を示す平断面図である。FIG. 14 is a plan sectional view showing both a secondary cavity and a secondary injection formed by remolding.

【図１５】 型開後の中空物品の離型状態を示す略示平
断面図である。FIG. 15 is a schematic plan cross-sectional view showing a release state of the hollow article after the mold is opened.

【図１６】 竪型成形機に適用可能なこの発明に係る金
型装置の型開時における縦断側面図である。FIG. 16 is a vertical sectional side view of a mold apparatus according to the present invention applicable to a vertical molding machine when the mold is opened.

【図１７】 同じく中間板開放後の固定盤側の平面図で
ある。FIG. 17 is a plan view of the fixed platen side after the intermediate plate is opened.

【図１８】 中空物品の半体成形状態を示す略示縦断正
面図である。FIG. 18 is a schematic longitudinal sectional front view showing a half-molded state of a hollow article.

【図１９】 中空物品の半体成形後の型開状態を示す略
示縦正面図である。FIG. 19 is a schematic vertical front view showing a mold opened state after half-molding of a hollow article.

【図２０】 再型閉により形成された二次キャビティと
二次射出の両方を示す縦断正面図である。FIG. 20 is a vertical sectional front view showing both a secondary cavity and a secondary injection formed by remolding.

【図２１】 型開後の中空物品の離型状態を示す略示縦
断正面図である。FIG. 21 is a schematic longitudinal sectional front view showing a release state of the hollow article after the mold is opened.

【符号の説明】[Explanation of symbols]

１ 固定盤 ２ 可動盤 ３ タイバー ４ ホットランナープレート ５，６ ホットランナー ７，８ ノズル ９ 固定型 １０ 可動型 １１，１２ キャビティ １３ 中間板 １４，１５ コア型 １７，１８ 二次キャビティ成形用の凸条型 ２０ 中間板の保持枠 ２４ 中間板出入用の油圧シリンダ ２５ 中間板開閉用の油圧シリンダ ３０ 中空物品 ３１，３２ 半体 ３３，３４ フランジ ３５ 二次キャビティ ３６ 結合帯 ５１，５２ 分岐ランナー ５２ａ 中間板の通孔 ５２ｂ 可動型側のコールドランナー ５３ コールドランナー ６１ パーティング面のコールドランナー ６２ コールドランナー DESCRIPTION OF SYMBOLS 1 Fixed board 2 Movable board 3 Tie bar 4 Hot runner plate 5, 6 Hot runner 7, 8 Nozzle 9 Fixed type 10 Movable type 11, 12 Cavity 13 Intermediate plate 14, 15 Core type 17, 18 Ridge for secondary cavity molding Mold 20 Holding frame for intermediate plate 24 Hydraulic cylinder for entering / exiting intermediate plate 25 Hydraulic cylinder for opening / closing intermediate plate 30 Hollow article 31, 32 Half body 33, 34 Flange 35 Secondary cavity 36 Bonding band 51, 52 Branch runner 52a Intermediate plate Through hole 52b Cold runner on movable side 53 Cold runner 61 Cold runner on parting surface 62 Cold runner

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 固定盤側の複数のホットランナーを有す
るプレートと、そのホットランナープレートに当設し
て、固定盤に取付けたキャビティを有する固定型と、 可動盤に取付けたキャビティを有する可動型と、 前後面のキャビティ対向部位にコア型を有し、かつコア
型の基端部周囲に二次キャビティ形成用の凸条型を有す
る中間板と、 その中間板を保持して固定型と可動型との間に出入及び
進退移動させる中間板操作装置とからなり、 上記ホットランナーの一方を固定型のキャビティと中間
板を通して可動型のキャビティとに分岐接続し、他方を
固定型の二次キャビティティ部位に接続してなることを
特徴とする中空物品の射出成形用金型装置。1. A plate having a plurality of hot runners on a fixed platen side, a fixed die provided on the hot runner plate and having a cavity attached to the fixed platen, and a movable die having a cavity attached to the movable platen. An intermediate plate having a core mold at the front and rear surfaces facing the cavity and having a ridge for forming a secondary cavity around a base end of the core mold; and a fixed mold and movable holding the intermediate plate. An intermediate plate operating device that moves in and out of the mold and moves forward and backward. One of the hot runners is branched and connected to a fixed mold cavity and a movable mold cavity through the intermediate plate, and the other is a fixed secondary cavity. A mold device for injection molding a hollow article, wherein the mold device is connected to a tee portion. 【請求項２】 固定盤側の複数のホットランナーを有す
るプレートと、 そのホットランナープレートに当設して、固定盤に並設
したキャビティを有する一対の固定型と、 可動盤の固定型対向部位に並設したキャビティを有する
一対の可動型と、 前後面のキャビティ対向部位にコア型を有し、かつコア
型の基端部周囲に二次キャビティ形成用の凸条型を有す
る中間板と、 その中間板を保持して固定型と可動型との間に出入及び
進退移動させる中間板操作装置とからなり、 上記ホットランナーの一方を両固定型のキャビティと中
間板を通して両可動型のキャビティに分岐接続し、他方
を両固定型の二次キャビティティ部位に接続して、複数
個の中空物品の同時成形を可能としてなることを特徴と
する中空物品の射出成形用金型装置。2. A plate having a plurality of hot runners on a fixed board side, a pair of fixed molds provided on the hot runner plate and having cavities arranged in parallel with the fixed board, and a fixed mold facing portion of the movable board. A pair of movable molds having cavities arranged side by side, and an intermediate plate having a core mold at front and rear cavity opposing portions and having a ridge for forming a secondary cavity around a base end of the core mold, An intermediate plate operating device for holding the intermediate plate and moving in and out and moving between the fixed die and the movable die, wherein one of the hot runners passes through both the fixed die cavity and the intermediate plate into the two movable die cavities. A mold apparatus for injection molding a hollow article, wherein a branch connection is made, and the other is connected to a secondary cavity part of both fixed dies, thereby enabling simultaneous molding of a plurality of hollow articles. 【請求項３】 上記ホットランナーの一方を固定型のキ
ャビティと中間板を通して可動型のキャビティに分岐接
続し、他方を固定型と可動型とのパーティング面に形成
したコールドランナーとして、固定型の二次キャビティ
ティ部位に接続してなることを特徴とする請求項１又は
２記載の中空物品の射出成形用金型装置。3. One of the hot runners is branched and connected to a movable mold cavity through a fixed mold cavity and an intermediate plate, and the other is a cold runner formed on a parting surface of the fixed mold and the movable mold. The injection molding apparatus for hollow articles according to claim 1 or 2, wherein the apparatus is connected to a secondary cavity part. 【請求項４】 上記複数のホットランナー又は上記ホッ
トランナーとコールドランナーからキャビティに射出充
填される樹脂は、同一樹脂又は異色樹脂或いは異材質樹
脂からなることを特徴とする請求項１〜３のいずれかに
記載の中空物品の射出成形用金型装置。4. The resin injected into the cavity from the plurality of hot runners or the hot runner and the cold runner is made of the same resin, a different color resin, or a different material resin. A mold device for injection molding of a hollow article according to any of the above items.
JP2001024752A 2001-01-31 2001-01-31 Mold equipment for injection molding of hollow articles Expired - Fee Related JP3593043B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001024752A JP3593043B2 (en) 2001-01-31 2001-01-31 Mold equipment for injection molding of hollow articles

Publications (2)

Publication Number Publication Date
JP2002225090A true JP2002225090A (en) 2002-08-14
JP3593043B2 JP3593043B2 (en) 2004-11-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007007925A (en) * 2005-06-29 2007-01-18 Toyota Boshoku Corp Mold for stack molding
JP2018001453A (en) * 2016-06-28 2018-01-11 キヤノン株式会社 Production method of liquid supply component, production apparatus, liquid supply component, and liquid discharge head
CN113910532A (en) * 2021-10-12 2022-01-11 深圳市众为精密科技有限公司 High-gloss high-efficiency precise complex-profile injection mold for 5G mobile phone

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007007925A (en) * 2005-06-29 2007-01-18 Toyota Boshoku Corp Mold for stack molding
JP4552139B2 (en) * 2005-06-29 2010-09-29 トヨタ紡織株式会社 Stack mold
JP2018001453A (en) * 2016-06-28 2018-01-11 キヤノン株式会社 Production method of liquid supply component, production apparatus, liquid supply component, and liquid discharge head
CN113910532A (en) * 2021-10-12 2022-01-11 深圳市众为精密科技有限公司 High-gloss high-efficiency precise complex-profile injection mold for 5G mobile phone
CN113910532B (en) * 2021-10-12 2023-09-22 深圳市众为精密科技有限公司 High-light efficient precision complex-molded surface injection mold for 5G mobile phone

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