JP2908971B2 - Mold opening / closing device for hot runner gate - Google Patents
Mold opening / closing device for hot runner gateInfo
- Publication number
- JP2908971B2 JP2908971B2 JP5295040A JP29504093A JP2908971B2 JP 2908971 B2 JP2908971 B2 JP 2908971B2 JP 5295040 A JP5295040 A JP 5295040A JP 29504093 A JP29504093 A JP 29504093A JP 2908971 B2 JP2908971 B2 JP 2908971B2
- Authority
- JP
- Japan
- Prior art keywords
- gate
- flow path
- molten resin
- valve pin
- resin flow
- 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
Links
- 239000011347 resin Substances 0.000 claims description 61
- 229920005989 resin Polymers 0.000 claims description 61
- 238000000465 moulding Methods 0.000 claims description 28
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 2
- 208000015943 Coeliac disease Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C2045/2855—Closure devices therefor consisting of needle valve systems intersecting the nozzle or runner channel
Description
【０００１】[0001]
【産業上の利用分野】本発明は、スプルーレスまたはラ
ンナーレスなどのホットランナーを有する成形金型にお
いて、ホットランナーのゲートを開閉する装置の構造に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing a gate of a hot runner in a molding die having a hot runner such as a sprueless or runnerless type.
【０００２】[0002]
【従来の技術】従来、この種のホットランナーのゲート
開閉装置としては特開平２−１７９７１８号公報に開示
されるものがある。これは図５に示すようにホットラン
ナーを構成するチップ１にチップ１の中央を貫通するよ
うに溶融樹脂流路２を設けてあり、溶融樹脂流路２内に
バルブピン３を挿通してあり、バルブピン３を前後に駆
動することによりバルブピン３の先端で溶融樹脂通路２
の先端のゲート４を開閉するようになっている。2. Description of the Related Art A conventional hot runner gate opening / closing device is disclosed in Japanese Patent Application Laid-Open No. 2-179718. As shown in FIG. 5 , a molten resin flow path 2 is provided in a chip 1 constituting a hot runner so as to penetrate the center of the chip 1, and a valve pin 3 is inserted into the molten resin flow path 2. By driving the valve pin 3 back and forth, the molten resin passage 2 is formed at the tip of the valve pin 3.
The opening and closing of the gate 4 at the tip of the.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記従来例
にあっては、バルブピン３が溶融樹脂流路２内に位置す
るために樹脂の滞留劣化を完全に防げず、製品の品質低
下を招くという問題がある。またバルブピン３が溶融樹
脂流路２内に位置するためにゲート開閉精度及び調整要
素のレベルが低く、多数個取りの成形金型において製品
の品質にばらつきが生じるという問題があった。However, in the above-mentioned conventional example, since the valve pin 3 is located in the molten resin flow path 2, it is not possible to completely prevent the resin from deteriorating due to stagnation, which leads to deterioration in product quality. There's a problem. Further, since the valve pin 3 is located in the molten resin flow path 2, the gate opening / closing accuracy and the level of the adjustment element are low, and there is a problem that the quality of the product is varied in a multi-cavity molding die.
【０００４】本発明は上記問題点に鑑みてなされたもの
であって、本発明の目的とするところは樹脂の滞留劣化
を最小に防ぐことができて品質のよい製品を得ることが
できる成形金型のホットランナーのゲートの開閉装置を
提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a molding die capable of minimizing resin deterioration due to stagnation and obtaining a high quality product. It is an object of the present invention to provide a hot-runner gate opening and closing device.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
本発明成形金型のホットランナーのゲートの開閉装置
は、成形金型Ａ内に複数個のチップ１を配置し、ホット
ランナーを構成する上記チップ１に溶融樹脂流路２と溶
融樹脂通路２の先端のゲート４を開閉するバルブピン３
とを設け、溶融樹脂流路２の位置とバルブピン３の位置
を異ならせると共に溶融樹脂流路２のゲート４にバルブ
ピン３の先端を交差させてゲート４を開閉するように
し、各チップ１のバルブピン３をピンプレート８に固定
し、成形金型Ａ内に配置した電動モータ５を有するゲー
ト開閉駆動手段でピンプレート５を介して複数個のバル
ブピン３を同時に駆動するようにして成ることを特徴と
する。In order to achieve the above object, a gate opening and closing device for a hot runner of a molding die according to the present invention comprises a plurality of chips 1 arranged in a molding die A to constitute a hot runner. valve pin 3 for opening and closing the gate 4 at the tip of the molten resin flow path 2 and the molten resin passage 2 to the chip 1
The door is provided, by intersecting the tip of the valve pin 3 to the gate 4 of the molten resin flow path 2 with varying the position of the valve pin 3 of molten resin flow path 2 so as to open and close the gate 4, of each chip 1 valve pin 3 fixed to pin plate 8
A plurality of valve pins 3 are simultaneously driven via the pin plate 5 by gate opening / closing driving means having the electric motor 5 disposed in the molding die A.
【０００６】また成形金型Ａに円形のマニホールド９を
設け、円形のマニホールド９から放射状に広がるように
複数本のチップ１を配置し、ホットランナーを構成する
上記チップ１に溶融樹脂流路２と溶融樹脂流路２の先端
のゲート４を開閉するバルブ ピン３とを設けると共にマ
ニホールド９の流路を各チップ１の溶融樹脂流路２に連
通させ、溶融樹脂流路２の位置とバルブピン３の位置を
異ならせると共に溶融樹脂流路２のゲート４にバルブピ
ン３の先端を交差させてゲート４を開閉するようにし、
成形金型Ａ内に配置した電動モータ５を有するゲート開
閉駆動手段で各バルブピン３を駆動するようにして成る
ことを特徴とすることも好ましい。Further , a circular manifold 9 is mounted on the molding die A.
So that it spreads radially from the circular manifold 9
A plurality of chips 1 are arranged to form a hot runner
The tip 1 has a molten resin flow path 2 and a tip of the molten resin flow path 2.
Ma provided with a valve pin 3 for opening and closing the gate 4
The flow path of the manifold 9 is connected to the molten resin flow path 2 of each chip 1.
And the position of the molten resin flow path 2 and the position of the valve pin 3
The valve pin is connected to the gate 4 of the molten resin flow path 2
To open and close gate 4 by crossing the tip of
Gate opening with electric motor 5 located in molding die A
It is also preferable that each valve pin 3 is driven by the closing drive means .
【０００７】[0007]
【作用】上記構成によれば、ゲート開閉駆動手段でバル
ブピン３を駆動すれば、バルブピン３の先端にてゲート
４を開閉できる。このとき溶融樹脂流路２内にバルブピ
ン３が位置しないため、溶融樹脂を滞留させるものがな
くて樹脂の滞留劣化を最小に防ぐことができると共に樹
脂の色替えをするときも良好な色替え特性が得られる。
また溶融樹脂流路２のゲート４にバルブピン３の先端を
交差させて開閉するようになっているため、短いストロ
ークでゲートを確実に開閉できてゲート開閉精度を向上
できると共にゲートの開閉駆動に要する電力を少電力に
できる。またゲート開閉駆動手段を成形金型Ａ内に配置
してあるため、成形金型Ａにゲート開閉装置を組み込ん
で小型化が図れる。また成形金型Ａ内に複数個のチップ
１を配置し、各チップ１のバルブピン３をピンプレート
８に固定し、ゲート開閉駆動手段で複数個のバルブピン
３を同時に駆動してゲート４を開閉するようにしてある
ため、複数のバルブピン３を１台の電動モータ５で制御
できる。 According to the above construction, if the valve pin 3 is driven by the gate opening / closing drive means, the gate 4 can be opened / closed at the tip of the valve pin 3. At this time, since the valve pin 3 is not located in the molten resin flow path 2, there is nothing to keep the molten resin, so that the deterioration of the resin can be minimized, and good color change characteristics can be obtained when the color of the resin is changed. Is obtained.
In addition, since the valve pin 3 is opened and closed with the tip of the valve pin 3 crossing the gate 4 of the molten resin flow path 2, the gate can be reliably opened and closed with a short stroke, the gate opening and closing accuracy can be improved, and the gate opening and closing drive is required. Power can be reduced. The gate opening / closing drive means is arranged in the molding die A.
The gate opening / closing device is incorporated in the molding die A
Can be downsized. Also, a plurality of chips are placed in the molding die A.
1 and the valve pin 3 of each chip 1
8 and a plurality of valve pins
3 are simultaneously driven to open and close the gate 4.
Therefore, a plurality of valve pins 3 are controlled by one electric motor 5
it can.
【０００８】また成形金型Ａに円形のマニホールド９を
設け、円形のマニホールド９から放射状に広がるように
複数本のチップ１を配置すると共にマニホールド９の流
路を各チップ１の溶融樹脂流路２に連通させると、マニ
ホールド９を介して樹脂を供給するものでも流路を最短
にできる。Further, a circular manifold 9 is provided in a molding die A, a plurality of chips 1 are arranged so as to radially spread from the circular manifold 9, and the flow path of the manifold 9 is changed to the molten resin flow path 2 of each chip 1. The flow path can be minimized even if the resin is supplied through the manifold 9.
【０００９】[0009]
【実施例】図２は射出成形装置の全体を示すものであ
る。基台１１上の右側には射出成形機Ｂを搭載してあ
り、射出成形機Ｂは射出シリンダ７、射出スクリュー１
２、ホッパー１３、射出ノズル１４等を有している。基
台１１上の左側には成形金型Ａを配置してあり、この成
形金型Ａは固定側金型Ａ1 と可動側金型Ａ2 で構成され
ている。固定側金型Ａ1 は固定プラテン１５に取り付け
られ、可動側金型Ａ2 は左右に移動自在な可動プラテン
１６に取り付けられている。固定側金型Ａ1 は図１に示
すように固定型板６、受け板１７、取り付け板１８等で
構成され、内部にホットランナーを構成するチップ１や
マニホールド９を内装してある。可動側金型Ａ2 は可動
型板１９にて形成されており、可動型板１９を固定型板
６に合致させたとき可動型板１９と固定型板６との間に
キャビティが形成されるようになっている。FIG. 2 shows the whole injection molding apparatus. An injection molding machine B is mounted on the right side of the base 11, and the injection molding machine B includes an injection cylinder 7, an injection screw 1
2, a hopper 13, an injection nozzle 14, and the like. The left on the base 11 Yes place the molding die A, the molding die A is composed of a fixed die A 1 and the movable mold A 2. The fixed mold A 1 is attached to a fixed platen 15, and the movable mold A 2 is attached to a movable platen 16 that can move left and right. Fixed die A 1 is fixed plate 6, as shown in FIG. 1, the receiving plate 17 is constituted by a mounting plate 18, etc., are then furnished the chip 1 and the manifold 9 constituting the hot runner therein. Movable mold A 2 are formed in the movable mold plate 19, <br/> cavitation between the movable mold plate 19 when the align your movable mold plate 19 to the stationary die plate 6 and the stationary mold plate 6 Is formed.
【００１０】固定型板６及び受け板１７には複数個のチ
ップ１を装着してあり、チップ１にはチップ１の長手方
向に貫通するように溶融樹脂流路２を穿孔してある。こ
の溶融樹脂流路２はチップ１のセンターに対してずらせ
て形成してあり、溶融樹脂流路２の先端のゲート４をキ
ャビティに連通させてあり、溶融樹脂流路２の基端をマ
ニホールド９の流路に連通させてある。チップ１のセン
ターにはバルブピン３を挿通してあり、バルブピン３が
長手方向に摺動することでバルブピン３の先端でゲート
４を開閉するようになっている。溶融樹脂流路２をチッ
プ１のセンターに対してずらせたこととバルブピン３を
センターに位置させたことにより、溶融樹脂流路２内に
バルブピン３が挿通されないようになっている。またゲ
ート４ではバルブピン３の先端がゲート４に対して交差
しており、バルブピン３をゲート４に対して交差する方
向に摺動させてゲート４を開閉できるようになってい
る。複数のチップ１に挿通した各バルブピン３の基端を
１枚のピンプレート８に結合してあり、１枚のピンプレ
ート８を駆動することにより複数のバルブピン３を同時
に駆動してゲート４の開閉ができるようになっている。
ピンプレート８にはスクリューギヤ４１を螺合してあ
り、電動モータ５で駆動されるウォーム軸３８をスクリ
ューギヤ４１のホイール部３９に歯合させてある。しか
して電動モータ５でウォーム軸３８を駆動すると、スク
リューギヤ４１を回転駆動し、ピンプレート８を駆動し
て複数のバルブピン３を同時に駆動できる。上記のよう
に構成されていると、複数のバルブピン３を１台の電動
モータ５で制御可能であり、また複数のゲート調整が不
要であると共にゲート開閉のばらつきがない。 A plurality of chips 1 are mounted on the fixed mold plate 6 and the receiving plate 17, and the molten resin flow path 2 is formed in the chip 1 so as to penetrate in the longitudinal direction of the chip 1. Perforated. The molten resin flow path 2 Yes formed to be shifted to the center of the chip. 1 are communicated with each gate 4 at the tip of the molten resin flow path 2 to the key <br/> Yabite I, the molten resin flow path 2 Is communicated with the flow path of the manifold 9. A valve pin 3 is inserted through the center of the chip 1, and the gate 4 is opened and closed at the tip of the valve pin 3 by sliding the valve pin 3 in the longitudinal direction. By displacing the molten resin flow path 2 with respect to the center of the chip 1 and by positioning the valve pin 3 at the center, the valve pin 3 is prevented from being inserted into the molten resin flow path 2. In the gate 4, the tip of the valve pin 3 intersects the gate 4, and the gate 4 can be opened and closed by sliding the valve pin 3 in a direction intersecting the gate 4. The base end of each valve pin 3 inserted through a plurality of chips 1
It is connected to one pin plate 8 and one pin plate
By driving the port 8, a plurality of valve pins 3 can be simultaneously
To open and close the gate 4.
A screw gear 41 is screwed into the pin plate 8.
The worm shaft 38 driven by the electric motor 5
The gear portion 41 is meshed with the wheel portion 39. Only
When the worm shaft 38 is driven by the electric motor 5,
Rotate the crown gear 41 and drive the pin plate 8
Thus, a plurality of valve pins 3 can be driven simultaneously. As above
, The plurality of valve pins 3 are connected to one
It can be controlled by the motor 5, and multiple gate adjustments are not possible.
It is important and there is no variation in gate opening and closing.
【００１１】射出成形機Ｂの射出ノズル１４をマニホー
ルド９の流路に連通させ、固定側金型Ａ1 に可動側金型
Ａ2 を合致させ、射出ノズル１４から樹脂を射出すると
共にゲート４を開放すると、キャビティに樹脂が充填さ
れ、キャビティに所定量の樹脂が注入されるとゲート４
が閉じられ、キャビティ内で成形品が成形され、可動側
金型Ａ2 を開くことにより成形品が取り出される。この
ように成形することにより、ランナーレス、スプルーレ
スで成形品が形成される。そしてチップ１内及びマニホ
ールド９内の樹脂の溶融状態が維持されて次の成形に用
いられる。The injection nozzle 14 of the injection molding machine B is communicated with the flow path of the manifold 9 so that the movable die A 2 matches the fixed die A 1 , and the resin is injected from the injection nozzle 14 and the gate 4 is closed. When opened, the resin is filled in Cavity I, a predetermined amount of the resin is injected into Cavity I gate 4
Is closed, the molded article is molded in a Cavity I, molded articles are taken out by opening the movable mold A 2. By molding in this manner, a molded article is formed without runners and sprues. Then, the molten state of the resin in the chip 1 and the manifold 9 is maintained and used for the next molding.
【００１２】図３（ａ）は上記実施例のチップ１部分を
示す図であって、溶融樹脂流路２がセンターに対してず
らせてあり、バルブピン３をチップ１のセンターに挿通
してある。図３（ｂ）は他の実施例であり、チップ１の
センターに溶融樹脂流路２を設けてあり、チップ１のセ
ンターに対して傾斜するように側方から斜めにバルブピ
ン３を挿通してあり、バルブピン３の先端をゲート４に
交差させてある。上記のように溶融樹脂流路２とバルブ
ピン３の挿通位置を異ならせて溶融樹脂流路２内にバル
ブピン３が位置しないようにしてあるため樹脂が滞留し
にくく、樹脂の滞留劣化を防止でき、また樹脂の色替え
を行うとき良好な色替え性が得られる。またバルブピン
３をゲート４に交差させて開閉するために短いバルブピ
ン３のストロークで正確にゲート開閉ができ、ゲート開
閉精度が５０μｍで可能であると共に少電力ですむ。FIG. 3A is a view showing a portion of the chip 1 of the above embodiment, in which the molten resin flow path 2 is shifted from the center, and the valve pin 3 is inserted through the center of the chip 1. FIG. 3B shows another embodiment, in which the molten resin flow path 2 is provided at the center of the chip 1 and the valve pin 3 is inserted obliquely from the side so as to be inclined with respect to the center of the chip 1. The tip of the valve pin 3 crosses the gate 4. As described above, the insertion positions of the molten resin flow path 2 and the valve pins 3 are made different so that the valve pins 3 are not positioned in the molten resin flow path 2, so that the resin is less likely to stay, and the deterioration of the resin can be prevented. Also, good color changeability can be obtained when changing the color of the resin. Further, since the valve pin 3 is opened and closed so as to cross the gate 4, the gate can be opened and closed accurately with a short stroke of the valve pin 3, and the gate opening and closing accuracy can be 50 μm and the power consumption is small.
【００１３】図４（ａ）は他の実施例を示す。本実施例
の場合、円形のマニホールド９を固定側金型Ａ1 のセン
ターに配置してあり、円形のマニホールド９を中心に放
射状に広がるように複数本のチップ１を配置してあり、
マニホールド９の流路と複数本のチップ１の溶融樹脂流
路２とを連通させてある。つまり、従来は図４（ｃ）に
示すようにマニホールド９に複数本の分岐流路４０を設
け、複数のチップ１の溶融樹脂流路２に分岐流路４０を
連通させてあり、分岐流路４０にて樹脂を供給する流路
が長くなっていたが、本実施例の場合、図４（ｂ）に示
すように分岐流路４０なしにマニホールド９を直接チッ
プ１の溶融樹脂流路２に連通させることができる。この
ため樹脂の流路を最短にできて複数個同時成形に最適で
ある。また固定側金型Ａ 1 には電動モータ５を配置して
あり、電動モータ５にてウォームギヤ２２、スクリュー
ギヤ２３を介してバルブピン３を往復駆動できるように
なっている。 FIG . 4A shows another embodiment. In this embodiment, Yes disposed a circular manifold 9 to the center of the fixed metal mold A 1, Yes disposed a plurality of chips 1 so as to spread radially around the circular manifold 9,
The flow path of the manifold 9 and the molten resin flow path 2 of the plurality of chips 1 are communicated. That is, conventionally provided with a plurality of branch flow paths 40 to the manifold 9, as shown in FIG. 4 (c), Yes and communicated to the branch flow path 40 to the molten resin flow path 2 of a plurality of chips 1, the branch passage Although flow path for supplying the resin was longer at 40, in this embodiment, the manifold 9 directly to the molten resin flow path 2 of the chip 1 without the branch passage 40 as shown in FIG. 4 (b) Can communicate. For this reason, the flow path of the resin can be minimized, which is most suitable for simultaneous molding of a plurality. Also the stationary-side die A 1 is arranged an electric motor 5
Yes, worm gear 22, screw with electric motor 5
So that the valve pin 3 can be driven back and forth via the gear 23
Has become.
【００１４】[0014]
【発明の効果】本発明は、叙述のように溶融樹脂流路の
位置とバルブピンの位置を異ならせると共に溶融樹脂流
路のゲートにバルブピンの先端を交差させてゲートを開
閉するようにしているので、溶融樹脂流路内にバルブピ
ンが位置しなくて溶融樹脂を滞留させるものがなく、樹
脂の滞留劣化を最小に防ぐことができると共に樹脂の色
替えをするときも良好な色替え特性が得られるものであ
り、また溶融樹脂流路のゲートにバルブピンの先端を交
差させて開閉するようになっているため、短いストロー
クでゲートを確実に開閉できてゲート開閉精度を向上で
きると共にゲートの開閉駆動に要する電力を少電力にで
きるものであり、またゲート開閉駆動手段を成形金型内
に配置してあるので、成形金型にゲート開閉装置を組み
込んで小型化が図れるものであり、また成形金型内に複
数個のチップを配置し、各チップのバルブピンをピンプ
レートに固定し、ゲート開閉駆動手段で複数個のバルブ
ピンを同時に駆動してゲートを開閉するようにしてある
ので、複数のバルブピンを１台の電動モータで制御でき
るものであり、しかも複数のゲートの調整が不要である
と共にゲート開閉のばらつきがないものである。As described above, according to the present invention, the position of the molten resin flow path is different from the position of the valve pin, and the gate of the molten resin flow path is opened and closed by crossing the tip of the valve pin. Since no valve pin is located in the molten resin flow path and the molten resin is not retained, it is possible to minimize the degradation of the retained resin and to obtain good color change characteristics when changing the color of the resin. In addition, since the tip of the valve pin crosses the gate of the molten resin flow path to open and close, the gate can be opened and closed reliably with a short stroke, and the gate opening and closing accuracy can be improved and the gate opening and closing drive can be performed. all SANYO capable power to low power, since the or gate opening and closing means are arranged for forming Katachikin the type, size reduction incorporate gating device molding die drawing necessary A shall, also a plurality of chips into the molding die disposed, the valve pin of each chip is fixed to the pin plate, so as to open and close the gate and at the same time drives a plurality of valve pin at the gate opening and closing drive means Therefore, a plurality of valve pins can be controlled by a single electric motor, and furthermore, there is no need to adjust a plurality of gates and there is no variation in gate opening and closing.
【００１５】また本発明の請求項２記載の発明にあって
は、成形金型に円形のマニホールドを設け、円形のマニ
ホールドから放射状に広がるように複数本のチップを配
置すると共にマニホールドの流路を各チップの溶融樹脂
流路に連通させているので、マニホールドを介して樹脂
を供給するものでも流路を最短にでき、複数個同時成形
に最適である。According to the second aspect of the present invention , a molding die is provided with a circular manifold, a plurality of chips are arranged so as to radially spread from the circular manifold, and a flow path of the manifold is formed. Since it is connected to the molten resin flow path of each chip, the flow path can be minimized even if resin is supplied via a manifold, and it is optimal for simultaneous molding of a plurality of chips.
【図１】本発明の一実施例の成形金型の断面図である。FIG. 1 is a sectional view of a molding die according to one embodiment of the present invention.
【図２】同上の射出成形装置を示す一部切欠正面図であ
る。FIG. 2 is a partially cutaway front view showing the above injection molding apparatus.
【図３】（ａ）は同上のチップ部分の断面図、（ｂ）は
チップ部分の他例を示す断面図である。FIG. 3A is a cross-sectional view of the same chip portion, and FIG. 3B is a cross-sectional view showing another example of the chip portion.
【図４】同上の他の実施例の成形金型の断面図である。 FIG. 4 is a sectional view of a molding die according to another embodiment of the same.
【図５】従来例の断面図である。 FIG. 5 is a sectional view of a conventional example.
１ チップ ２ 溶融樹脂流路 ３ バルブピン ４ ゲート ５ 電動モータ ６ 固定型板 ７ 射出シリンダ ８ ピンプレート ９ マニホールド DESCRIPTION OF SYMBOLS 1 Chip 2 Molten resin flow path 3 Valve pin 4 Gate 5 Electric motor 6 Fixed mold plate 7 Injection cylinder 8 Pin plate 9 Manifold
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 45/26 - 45/44 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) B29C 45/26-45/44
Claims (2)
ホットランナーを構成する上記チップに溶融樹脂流路と
溶融樹脂流路の先端のゲートを開閉するバルブピンとを
設け、溶融樹脂流路の位置とバルブピンの位置を異なら
せると共に溶融樹脂流路のゲートにバルブピンの先端を
交差させてゲートを開閉するようにし、各チップのバル
ブピンをピンプレートに固定し、成形金型内に配置した
電動モータを有するゲート開閉駆動手段でピンプレート
を介して複数個のバルブピンを同時に駆動するようにし
て成ることを特徴とする成形金型のホットランナーのゲ
ートの開閉装置。Claims: 1. A plurality of chips are arranged in a molding die,
The above-mentioned chip constituting the hot runner is provided with a molten resin flow path and a valve pin for opening and closing the gate at the tip of the molten resin flow path. so as to open and close the gate by intersecting the tip of the valve pin, Bal of each chip
Were fixed pin plate Bupin, pin plates at the gate opening and closing drive means having a <br/> electric motor disposed within the molding die
A plurality of valve pins are simultaneously driven via the opening / closing device of the hot runner gate of the molding die.
円形のマニホールドから放射状に広がるように複数本の
チップを配置し、ホットランナーを構成する上記チップ
に溶融樹脂流路と溶融樹脂流路の先端のゲートを開閉す
るバルブピンとを設けると共にマニホールドの流路を各
チップの溶融樹脂流路に連通させ、溶融樹脂流路の位置
とバルブピンの位置を異ならせると共に溶融樹脂流路の
ゲートにバルブピンの先端を交差させてゲートを開閉す
るようにし、成形金型内に配置した電動モータを有する
ゲート開閉駆動手段で各バルブピンを駆動するようにし
て成ることを特徴とする成形金型のホットランナーのゲ
ート開閉装置。2. A molding die is provided with a circular manifold,
Multiple pipes radiate from a circular manifold
The above chips that arrange the chips and constitute the hot runner
Opening and closing the gate at the end of the molten resin flow path and the molten resin flow path
Valve pin and manifold flow path
Communicate with the molten resin flow path of the chip, and position the molten resin flow path
And the position of the valve pin
Open and close the gate by crossing the tip of the valve pin with the gate
So as to have an electric motor arranged in the molding die
Gating device of the mold of the hot runner, characterized in that the gate opening and closing drive means formed by a so that drive the respective valve pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5295040A JP2908971B2 (en) | 1993-11-25 | 1993-11-25 | Mold opening / closing device for hot runner gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5295040A JP2908971B2 (en) | 1993-11-25 | 1993-11-25 | Mold opening / closing device for hot runner gate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07144347A JPH07144347A (en) | 1995-06-06 |
| JP2908971B2 true JP2908971B2 (en) | 1999-06-23 |
Family
ID=17815548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5295040A Expired - Fee Related JP2908971B2 (en) | 1993-11-25 | 1993-11-25 | Mold opening / closing device for hot runner gate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2908971B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100980512B1 (en) * | 2009-09-14 | 2010-09-06 | 허남욱 | A hot runner device for injection molding |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09123227A (en) * | 1995-11-07 | 1997-05-13 | Cam:Kk | Valve gate type hot-runner structure |
| JPH09193208A (en) * | 1996-01-17 | 1997-07-29 | Meisei Kinzoku Kogyosho:Kk | Extension nozzleless molding machine for family runnerless mold |
| US7014455B2 (en) | 2002-03-14 | 2006-03-21 | Mold-Masters Limited | Valve-gated injection molding system with side-mounted actuator |
| KR100526024B1 (en) * | 2002-03-18 | 2005-11-08 | 허남욱 | Hot Runner Valve Nozzle for molding plastics having multiple vertical grooves |
| DE202006012676U1 (en) | 2006-03-29 | 2007-08-09 | EWIKON Heißkanalsysteme GmbH & Co. KG | gate nozzle |
| CN101448619B (en) * | 2006-08-18 | 2012-07-04 | 爱维康热流道系统有限及两合公司 | Needle valve nozzle |
| JP5435196B2 (en) * | 2008-11-06 | 2014-03-05 | フィーサ株式会社 | Flow control valve, injection molding machine and injection molding method in multi-point gate injection molding |
| WO2010126330A2 (en) * | 2009-04-30 | 2010-11-04 | Kim Hyuk Joong | Hot runner valve apparatus for an injection molder |
| DE202009004786U1 (en) * | 2009-05-06 | 2010-09-23 | EWIKON Heißkanalsysteme GmbH & Co. KG | Hot runner nozzle for Seitenanspritzung |
| US9498909B2 (en) | 2011-11-23 | 2016-11-22 | Synventive Molding Solutions, Inc. | Injection molding flow control apparatus and method |
| ITTO20120578A1 (en) * | 2012-06-28 | 2013-12-29 | Inglass Spa | PLASTIC INJECTION MOLDING EQUIPMENT |
| CH706910A2 (en) | 2012-09-04 | 2014-03-14 | Schoettli Ag | Hot runner nozzle for injection of thermoplastic material into a mold. |
| KR101560146B1 (en) * | 2014-02-06 | 2015-10-14 | 유도스타자동화 주식회사 | A device for controlling a valve of an ejection molding apparatus |
| EP3785880B1 (en) * | 2014-10-15 | 2022-05-04 | Inglass S.p.A. | Apparatus for injection molding of plastic material |
-
1993
- 1993-11-25 JP JP5295040A patent/JP2908971B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100980512B1 (en) * | 2009-09-14 | 2010-09-06 | 허남욱 | A hot runner device for injection molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07144347A (en) | 1995-06-06 |
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