JPH0232825A - Hot runner nozzle for injection molding - Google Patents
Hot runner nozzle for injection moldingInfo
- Publication number
- JPH0232825A JPH0232825A JP18323588A JP18323588A JPH0232825A JP H0232825 A JPH0232825 A JP H0232825A JP 18323588 A JP18323588 A JP 18323588A JP 18323588 A JP18323588 A JP 18323588A JP H0232825 A JPH0232825 A JP H0232825A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- gate
- runner
- hot chip
- gate part
- 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
Links
- 238000001746 injection moulding Methods 0.000 title claims description 6
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 abstract description 33
- 229920005989 resin Polymers 0.000 abstract description 33
- 238000002347 injection Methods 0.000 abstract description 10
- 239000007924 injection Substances 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 3
- 108091092889 HOTTIP Proteins 0.000 description 16
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010008 shearing 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
- B29C45/30—Flow control means disposed within the sprue channel, e.g. "torpedo" construction
-
- 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
-
- 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
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C2045/2724—Preventing stringing of the moulding material
-
- 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
- B29C45/30—Flow control means disposed within the sprue channel, e.g. "torpedo" construction
- B29C2045/306—Movable torpedoes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は溶融樹脂等をキャビティに注入して射出成形す
るためのホットランナ−ノズルに関し、特にその射出口
の開閉構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hot runner nozzle for injecting molten resin or the like into a cavity for injection molding, and particularly to an opening/closing structure for the injection port.
従来、射出成形用のホットランナ−ノズルは、第４図に
示されるように、固定型８に穿設された孔８ａに樹脂シ
ール用のパルプ５とホットチップ６とが配置され、この
バルブ５とホットチップ６とは摺動面１２を介して図の
上下方向に摺動可能とされていて、このバルブ５を上下
動させてゲート部７を機械的に連通・遮断する形式のも
のが用いられていた。Conventionally, in a hot runner nozzle for injection molding, as shown in FIG. The hot tip 6 is capable of sliding in the vertical direction in the figure via a sliding surface 12, and the valve 5 is moved up and down to mechanically connect and shut off the gate part 7. It was getting worse.
即ち、スプール１１から注入された溶融樹脂１５はラン
ナー１を通り、その注入圧によりバルブ５の先端部５ａ
を図面下方に押してゲート７が開かれ、これによって溶
融樹脂１５がキャビティ９に注入される構造を有してい
た。尚、型開き時には、可動型１４を下方へ移動させる
ことで成形品が取り出される。That is, the molten resin 15 injected from the spool 11 passes through the runner 1, and due to the injection pressure, the tip 5a of the valve 5
It had a structure in which the gate 7 was opened by pushing downward in the drawing, and thereby the molten resin 15 was injected into the cavity 9. Note that when the mold is opened, the molded product is taken out by moving the movable mold 14 downward.
この場合、ホットチップ６の外周部には加熱用ヒータ４
が設けられていて、ホットチップ６内の樹脂１５が固化
しないようにされている。また、これらパルプ５とホッ
トチップ６との間には、パルプ５を常に図面上方に付勢
するためのコイルバネ（圧縮）３が装着されている。In this case, a heating heater 4 is provided on the outer periphery of the hot chip 6.
is provided to prevent the resin 15 in the hot chip 6 from solidifying. Further, a coil spring (compression) 3 is installed between the pulp 5 and the hot chip 6 to always urge the pulp 5 upward in the drawing.
第５図には、ゲート７を開いたときの状態が示されてお
り、前述したように、溶融樹脂１５の注入圧によりコイ
ルバネ（圧縮）３の付勢圧に抗してバルブ５が下方に移
動しゲート７が開かれる。FIG. 5 shows the state when the gate 7 is opened, and as mentioned above, the injection pressure of the molten resin 15 causes the valve 5 to move downward against the biasing pressure of the coil spring (compression) 3. Move and gate 7 will be opened.
このようにして、スプール１１から注入された樹脂１５
が、ランナーｌを経てゲート７からキャビティ９に充填
された時点で注入工程が終了し、バルブ５には注入圧が
加わらなくなる。In this way, the resin 15 injected from the spool 11
However, the injection process ends when the cavity 9 is filled from the gate 7 through the runner 1, and no injection pressure is applied to the valve 5.
このため、注入圧によりそれまで圧縮されていたコイル
バネ（圧縮）３は元の状態に復帰する。Therefore, the coil spring (compression) 3, which had been compressed by the injection pressure, returns to its original state.
これと同時にバルブ５もバネ圧により元の位置に戻され
、ゲート７はバルブ５の先端部５ａによって閉じられる
。At the same time, the valve 5 is also returned to its original position by the spring pressure, and the gate 7 is closed by the tip 5a of the valve 5.
続いて第６図のように、可動型１４を下方に移動させて
型開きを行ない、成形品ｌＯが取り出される。Subsequently, as shown in FIG. 6, the movable mold 14 is moved downward to open the mold, and the molded product 10 is taken out.
即ち、従来は前記バルブ５を樹脂の注入圧とコイルバネ
（圧縮）３との作用で上下動させ、ゲート７を機械的に
連通・遮断するようになっていた。That is, conventionally, the valve 5 was moved up and down by the action of the resin injection pressure and the coil spring (compression) 3, and the gate 7 was mechanically opened and closed.
〔発明が解決しようとする課題〕
しかしながら、前述した従来のホットランナ−ノズルに
あっては、バルブ５が上下動する際に、バルブ５に溶融
樹脂１５が付着したままバルブ５とホットチップ６とが
摺動することとなるため、この摺動面１２に溶融樹脂１
５が侵入し、摺動面１２の摩耗やカジリが発生するとい
うおそれがあった。[Problems to be Solved by the Invention] However, in the conventional hot runner nozzle described above, when the valve 5 moves up and down, the molten resin 15 remains attached to the valve 5 and the hot tip 6 is connected to the valve 5. will slide, so the molten resin 1 will be on this sliding surface 12.
5 may enter the sliding surface 12, causing wear and galling of the sliding surface 12.
また、この溶融樹脂１５がコイルバネ（圧縮）３のケー
シング１３にまで浸入し、コイルバネ（圧１１）３自身
の作動にも悪影響を及ぼすおそれがあった。Moreover, this molten resin 15 may infiltrate into the casing 13 of the coil spring (compression) 3, which may adversely affect the operation of the coil spring (compression 11) itself.
このため、第７図（ａ）、Φ）に示されるように、樹脂
１５の糸引き１５ａやトローリング１５ｂが発生すると
いう問題があった。For this reason, as shown in FIG. 7(a), Φ), there was a problem in that stringing 15a and trolling 15b of the resin 15 occurred.
この発明はかかる課題を解決するために成されたもので
、従来のホットランナ−ノズルで発生していた型開き時
の樹脂の糸引きやトローリングを防止し、連続的な安定
成形を可能とする射出成形用ホットランナ−ノズルの提
供を目的とする。This invention was made to solve this problem, and prevents stringing and trolling of the resin when opening the mold, which occurs with conventional hot runner nozzles, and enables continuous stable molding. The purpose is to provide a hot runner nozzle for injection molding.
前記目的を達成するために、本発明は、ホットチップを
ゲート部が軸心となるよう回転自在に配置すると共に、
ホットチップのゲート部方向端の外周面を部分的にカッ
トし、ホットチップの回転によりゲート部においてキャ
ビティーとランナーとが選択的に連通・遮断可能とした
ことを特徴とする。In order to achieve the above object, the present invention arranges a hot chip rotatably so that the gate part is the axis, and
The hot chip is characterized by partially cutting the outer circumferential surface of the end of the hot chip toward the gate so that the cavity and the runner can selectively communicate with each other at the gate by rotating the hot chip.
本発明は以上の構成としたことで、ホットチップのゲー
ト部方向端の外周面が部分的にカットされているので、
キャビティへの樹脂注入時には、ゲート部においてこの
ホットチップ外周面のカット部分を介してランナーとキ
ャビティとが連通され、また、キャビティへの樹脂の充
填完了後は、ゲート部を軸心としてホットチップを強制
的に回転させ、ホットチップのゲート方向端の外周面に
設けられたカット部分の位置をズラしてランナーとキャ
ビティとを遮断し、同時にゲート部の樹脂はホットチッ
プの回転力によって自動的に切断されるという利点を存
する。With the above configuration of the present invention, the outer circumferential surface of the hot chip at the end in the gate direction is partially cut.
When resin is injected into the cavity, the runner and the cavity are communicated through the cut part of the outer circumferential surface of the hot chip at the gate part, and after filling the cavity with resin, the hot chip is injected with the gate part as the axis. The hot chip is forcibly rotated to shift the position of the cut part provided on the outer circumferential surface of the end of the hot chip toward the gate, thereby blocking the runner from the cavity. It has the advantage of being disconnected.
〔実施例］
以下、図面に基づき本発明の好適な一実施例を説明する
。[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described based on the drawings.
尚、以下の図面において、理解を容易にするため、前述
した第４図と同一部材には同一の符号を付すこととする
。In the following drawings, in order to facilitate understanding, the same members as in FIG. 4 described above are given the same reference numerals.
第１図（ａ）には本発明にかかる射出成形用ホットラン
ナ−ノズルの縦断面図が示されている。同図において、
ホットチップ６は円筒状を成しゲート部７を軸心として
回転自在に配置されている。FIG. 1(a) shows a longitudinal sectional view of a hot runner nozzle for injection molding according to the present invention. In the same figure,
The hot chip 6 has a cylindrical shape and is arranged to be rotatable about the gate part 7.
即ち、第１図（ａ）、 （ｂ）に示されるように、ゲー
ト部７を軸心として固定型８に穿設された開口部８ａに
、スプライン１７ａ、１７ｂが嵌入されている。このス
プライン１７は、対向する円筒部が部分的に切欠かれて
断面扇形を成し、またこのスプライン１７と同一軸心の
ホットチップ６がギャップ２１を介して前記スプライン
１７の内側に嵌合されている。That is, as shown in FIGS. 1(a) and 1(b), splines 17a and 17b are fitted into an opening 8a formed in the fixed die 8 with the gate portion 7 as the axis. This spline 17 has opposing cylindrical parts partially cut out to form a fan-shaped cross section, and a hot tip 6 coaxial with this spline 17 is fitted inside the spline 17 through a gap 21. There is.
このホットチップ６には電源の大切自在な加熱ヒータ４
が設けられている。This hot chip 6 has a heater 4 whose power source can be freely controlled.
is provided.
尚、ホットチップ６とマニホールド２との摺動部１９に
は、シール２０が設けられていて、摺動部１９への溶融
樹脂１５の浸入が防止されている。A seal 20 is provided on the sliding portion 19 between the hot chip 6 and the manifold 2 to prevent the molten resin 15 from entering the sliding portion 19.
前記ホットチップ６の上部には、第１図（ａ）、 （Ｃ
）に示されるように、ホットチップ６と一体的に回転Ｆ
ｉ１Ｂが設けられている。この回転板１８の外周部には
シリンダ１６の作動杆１６ａが軸着されていて、シリン
ダ１６の往復作動によりホットチップ６がゲート部７を
軸心として左右方向に回転する。On the upper part of the hot chip 6, there are shown in FIGS.
), as shown in FIG.
i1B is provided. An operating rod 16a of the cylinder 16 is pivotally attached to the outer circumference of the rotary plate 18, and the reciprocating operation of the cylinder 16 causes the hot tip 6 to rotate in the left-right direction about the gate portion 7.
また、本実施例においては、ホットチップ６のゲート部
方向端の外周面が部分的に小径に形成されていて、ホッ
トチップ６の回転により、ゲート部７においてギャビテ
イ９とランナー１とが選択的に連通・遮断可能とされて
いることを特徴とする。Further, in this embodiment, the outer circumferential surface of the end of the hot tip 6 in the direction of the gate portion is partially formed to have a small diameter, and the rotation of the hot tip 6 selectively connects the gap 9 and the runner 1 in the gate portion 7. It is characterized by being able to communicate with and shut off.
即ち、第１図（ａ）、 （ｂ）に示されるように、ホッ
トチップ６のゲート部方向端には、対向する外周面が部
分的に小径に形成された連通部６ａを有していて、溶融
樹脂１５はその注入圧により図面矢印方向にランナ−１
→ランナー１ａ→連通部６ａ→ゲート部７の経路でキャ
ビティ９に注入される。That is, as shown in FIGS. 1(a) and 1(b), the end of the hot chip 6 in the direction of the gate portion has a communicating portion 6a in which the opposing outer peripheral surface is partially formed to have a small diameter. , the molten resin 15 moves toward the runner 1 in the direction of the arrow in the drawing due to its injection pressure.
It is injected into the cavity 9 along the route → runner 1a → communication part 6a → gate part 7.
従って、ホットチップ６がゲート７を軸心として略９０
度回動し、ホットチップ６の前記連通部６ａがスプライ
ン１７ａ、 １７ｂと対向する位置にきたときは、ラン
ナー１ａからゲート部７への溶融樹脂１５の経路が遮断
される。尚、前記ホットチップ６とスプライン１７との
摺動面に設けられたギャップ２１は、後述する樹脂の固
化層１５ｃの厚みに相当する微小間隙に設定されている
。Therefore, the hot chip 6 is about 90 degrees centering on the gate 7.
When the hot tip 6 is rotated once and the communicating portion 6a of the hot tip 6 comes to a position facing the splines 17a, 17b, the path of the molten resin 15 from the runner 1a to the gate portion 7 is blocked. Incidentally, the gap 21 provided on the sliding surface between the hot tip 6 and the spline 17 is set to be a minute gap corresponding to the thickness of a solidified resin layer 15c, which will be described later.
以上の構成に係る本実施例の動作を説明する。The operation of this embodiment according to the above configuration will be explained.
まずシリンダ１６の作動により、ホットチップ６のゲー
ト部方向端における連通部６ａが第１図（ａ）。First, due to the operation of the cylinder 16, the communication portion 6a at the end of the hot tip 6 in the direction of the gate portion is opened as shown in FIG. 1(a).
〜）の位置にあるときには、ランナー１ａとキャビティ
９とが連通され、スプール１１から注入された溶融樹脂
１５は、ランナー１．ｌａを経て連通部６ａを通りゲー
ト７に達し、ゲート７からキャビティ９に向は注入され
る。), the runner 1a and the cavity 9 are in communication, and the molten resin 15 injected from the spool 11 flows into the runner 1. 1a, passes through the communication portion 6a, reaches the gate 7, and is injected from the gate 7 into the cavity 9.
この時、ランナー１８部における溶融樹脂１５が固化し
ないように、ヒータ４によりホットチップ６が一定温度
に加熱されている。At this time, the hot tip 6 is heated to a constant temperature by the heater 4 so that the molten resin 15 in the runner 18 does not solidify.
キャビティ９への溶融樹脂１５の充填が終了すると、第
２図（ａ）、 （ｂ）に示されるように、シリンダ１６
を作動させてホットチップ６をゲート７を軸心として所
定角度（例えば９０度）回転させる。これによって、連
通部６ａはスプライン１７の内側対向位置に移動し、ラ
ンナー１ａとゲート７との間はホットチップ６とスプラ
イン１７とによって遮断される。同時に、このホットチ
ップ６を回転させる前に、それまでホットチップ６を加
熱していた加熱用ヒータ４への通電を停止する。When the filling of the molten resin 15 into the cavity 9 is completed, the cylinder 16 is opened as shown in FIGS. 2(a) and 2(b).
is activated to rotate the hot chip 6 by a predetermined angle (for example, 90 degrees) about the gate 7. As a result, the communicating portion 6a moves to a position facing the inside of the spline 17, and the runner 1a and the gate 7 are blocked by the hot tip 6 and the spline 17. At the same time, before the hot chip 6 is rotated, the power supply to the heater 4 that had been heating the hot chip 6 is stopped.
このため、第２図（Ｃ）に示されるように、ゲート７付
近に介在する溶融樹脂１５は、キャビティ９に熱をうば
われて固化（１５ｃ）する。この固化されたゲート部７
近傍の樹脂１５ｃは第２図（ａ）に示されるように、ス
プライン１７の内周縁２２と連通部６ａの左右縁２３と
の間の剪断作用により、ホットチップ６の回転力によっ
てゲート切断部７ａで切断される。これによって樹脂は
常に一定の箇所で切断されることになる。Therefore, as shown in FIG. 2(C), the molten resin 15 present near the gate 7 is transferred with heat by the cavity 9 and solidified (15c). This solidified gate part 7
As shown in FIG. 2(a), the nearby resin 15c is cut into the gate cutting portion 7a by the rotational force of the hot tip 6 due to the shearing action between the inner circumferential edge 22 of the spline 17 and the left and right edges 23 of the communication portion 6a. will be cut off. This ensures that the resin is always cut at a fixed location.
第３図は以上のようにしてでき上った成形品１０であり
、ゲート切断部７ａに相当する部分に小さな突起１０ａ
が残っている。この突起１０ａを切除して製品が完成す
る。FIG. 3 shows the molded product 10 completed as described above, with a small protrusion 10a at a portion corresponding to the gate cut portion 7a.
remains. The product is completed by cutting out the protrusion 10a.
以上により、本発明の実施例によれば、ホットチップ６
の外周面に部分的に小径の連通部６ａを設けたことによ
り、ホットチップ６の回転で射出口の連通・遮断を制御
することができる。また、キャビティ９への充填完了後
に加熱ヒータ４への通電を停止することにより、ゲート
部７近傍の溶融樹脂１５は固化すると共に、この固化層
（１５ｃ ）はホットチップ６の回転力によって一定箇
所で切断されるため、従来問題となっていた樹脂の糸引
きやトローリングの発生が確実に防止される。As described above, according to the embodiment of the present invention, the hot chip 6
By partially providing small-diameter communication portions 6a on the outer circumferential surface of the hot tip 6, communication/blocking of the injection port can be controlled by rotation of the hot tip 6. Furthermore, by stopping the power supply to the heater 4 after the filling of the cavity 9 is completed, the molten resin 15 in the vicinity of the gate portion 7 is solidified, and this solidified layer (15c) is formed in certain places by the rotational force of the hot tip 6. Since the resin is cut at the same time, stringing and trawling of the resin, which have been problems in the past, are reliably prevented.
更に、ホットチップ６とマニホールド２との摺動部１９
には、シール２０が設けられているので、摺動部１９へ
の樹脂の浸入がなくなり、従来のように摺動部１９にお
ける摩耗やカジリによる不具合いが解消される。Furthermore, the sliding part 19 between the hot chip 6 and the manifold 2
Since the seal 20 is provided, resin does not enter the sliding portion 19, and problems caused by wear and galling in the sliding portion 19, which were conventional, are eliminated.
以上説明した通り、本発明は、ホットチップをゲート部
が軸心となるよう回転自在に配置すると共に、ホットチ
ップのゲート部方向端の外周面を部分的にカットし、ホ
ットチップの回転によりゲ−ト部においてキャビティと
ランナーとが選択的に連通・遮断可能としたことにより
、ゲート部からの樹脂の糸引きやトローリングの発生を
防止し、安定した連続成形を行う事ができる。As explained above, in the present invention, the hot chip is arranged so as to be rotatable so that the gate part becomes the axis, and the outer circumferential surface of the hot chip at the end in the direction of the gate part is partially cut, and the hot chip is rotated to generate a gap. - By making it possible to selectively communicate and shut off the cavity and the runner at the gate part, it is possible to prevent resin from stringing or trolling from the gate part, and to perform stable continuous molding.
第１図ないし第３図は本発明の一実施例で、第１図（ａ
）はホットランナ−ノズルの縦断面図、第１図（ｂｌは
そのＡ−Ａ断面図でキャビティとランナーとの連通状態
を示す図、第１図（Ｃ）は第１図（ａ）の概略平面図、
第２図（ａ）はホットチップが回転してキャビティとラ
ンナーとが遮断された状態を示す図、第２図（ロ）、（
Ｃ）はホットランナ−ノズルの縦断面図で第２図（ロ）
は第２図（ａ）のＢ−Ｂ断面図、第２図（Ｃ）は第２図
（ａ）のＣ−Ｃ断面図、第３図は成形品の正面図、第４
図ないし第７図は従来の実施例を示すもので、第４図は
ホットランナ−ノズルの縦断面図、第５図はゲートが開
かれた状態を示す図、第６図は型開きの状態を示す図、
第７図（ａ）、 （ｂ）は夫々ゲートからの糸引きおよ
びトローリング状態を示す図である。
１．１ａ・・・ランナー、４・・・加熱ヒータ、６・・
・ホットチップ、６ａ・・・連通部、７・・・ゲート、
９・・・キャビティ、１５・・・溶融樹脂、１６・・・
シリンダ、１７・・・スプライン。1 to 3 show one embodiment of the present invention, and FIG.
) is a longitudinal cross-sectional view of the hot runner nozzle, FIG. Plan view,
Figure 2 (a) is a diagram showing a state in which the hot chip rotates and the cavity and runner are cut off, Figure 2 (b), (
C) is a longitudinal cross-sectional view of the hot runner nozzle, and Figure 2 (B)
is a sectional view taken along line B-B in Figure 2(a), Figure 2(C) is a sectional view taken along line CC in Figure 2(a), Figure 3 is a front view of the molded product, and Figure 4 is a sectional view taken along line CC in Figure 2(a).
7 to 7 show conventional embodiments, FIG. 4 is a longitudinal cross-sectional view of the hot runner nozzle, FIG. 5 is a diagram showing the state in which the gate is open, and FIG. 6 is a state in which the mold is opened. A diagram showing
FIGS. 7(a) and 7(b) are diagrams showing the state of string pulling from the gate and trolling, respectively. 1.1a...runner, 4...heater, 6...
・Hot chip, 6a...Communication part, 7...Gate,
9... Cavity, 15... Molten resin, 16...
Cylinder, 17...spline.
Claims (1)
置すると共に、ホットチップのゲート部方向端の外周面
を部分的にカットし、ホットチップの回転によりゲート
部においてキャビティーとランナーとが選択的に連通・
遮断可能としたことを特徴とする射出成形用ホットラン
ナーノズル。The hot chip is arranged so as to be rotatable with the gate part as the axis, and the outer peripheral surface of the hot chip at the end toward the gate part is partially cut, and the cavity and runner are selected at the gate part by rotating the hot chip. Communication/
A hot runner nozzle for injection molding that is characterized by being able to be shut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183235A JPH0720642B2 (en) | 1988-07-22 | 1988-07-22 | Hot runner nozzle for injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183235A JPH0720642B2 (en) | 1988-07-22 | 1988-07-22 | Hot runner nozzle for injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0232825A true JPH0232825A (en) | 1990-02-02 |
| JPH0720642B2 JPH0720642B2 (en) | 1995-03-08 |
Family
ID=16132142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63183235A Expired - Lifetime JPH0720642B2 (en) | 1988-07-22 | 1988-07-22 | Hot runner nozzle for injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720642B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006346941A (en) * | 2005-06-14 | 2006-12-28 | Toyota Motor Corp | Injection molding method and injection mold |
| CN103538208A (en) * | 2013-11-08 | 2014-01-29 | 哈希斯热流道科技（苏州）有限公司 | Open injection hole type hot runner injection mold device |
| WO2016037704A1 (en) * | 2014-09-10 | 2016-03-17 | Haidlmair Holding Gmbh | Injection molding nozzle for manufacturing injection molded components form plastic |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51106266U (en) * | 1975-02-22 | 1976-08-25 |
-
1988
- 1988-07-22 JP JP63183235A patent/JPH0720642B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51106266U (en) * | 1975-02-22 | 1976-08-25 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006346941A (en) * | 2005-06-14 | 2006-12-28 | Toyota Motor Corp | Injection molding method and injection mold |
| CN103538208A (en) * | 2013-11-08 | 2014-01-29 | 哈希斯热流道科技（苏州）有限公司 | Open injection hole type hot runner injection mold device |
| WO2016037704A1 (en) * | 2014-09-10 | 2016-03-17 | Haidlmair Holding Gmbh | Injection molding nozzle for manufacturing injection molded components form plastic |
| WO2016037209A1 (en) * | 2014-09-10 | 2016-03-17 | Haidlmair Holding Gmbh | Method and injection-moulding nozzle for producing injection-moulded parts from plastic |
| EP3191287B1 (en) * | 2014-09-10 | 2020-05-06 | Haidlmair Holding GmbH | Method and injection-moulding nozzle for producing injection-moulded parts from plastic |
| US11148332B2 (en) | 2014-09-10 | 2021-10-19 | Haidlmair Holding Gmbh | Injection molding nozzle for manufacturing injection molded components from plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0720642B2 (en) | 1995-03-08 |
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