JPS6039239Y2 - hot runner mechanism - Google Patents
hot runner mechanismInfo
- Publication number
- JPS6039239Y2 JPS6039239Y2 JP15280979U JP15280979U JPS6039239Y2 JP S6039239 Y2 JPS6039239 Y2 JP S6039239Y2 JP 15280979 U JP15280979 U JP 15280979U JP 15280979 U JP15280979 U JP 15280979U JP S6039239 Y2 JPS6039239 Y2 JP S6039239Y2
- Authority
- JP
- Japan
- Prior art keywords
- runner
- nozzle
- passage
- plate
- launch
- 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
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案はホットランナ形式の金型におけるホットランナ
機構に関するものである。[Detailed Description of the Invention] The present invention relates to a hot runner mechanism in a hot runner type mold.
１菫来のホットランナ機構を備えた金型の一例を第１図
により述べる。An example of a mold equipped with a hot runner mechanism will be described with reference to FIG.
固定型１１上のリング１２は樹脂の射出圧を受ける為に
設けられており、成形機（図示せず）からの溶融樹脂を
分配するための通路１３を有するランナプレート１４を
ボルト２５等により固定取付板１５に固着してあり、ラ
ンナプレート１４は固定型１１と固定取付板１５に空隙
を有して配置されている。A ring 12 on the fixed mold 11 is provided to receive resin injection pressure, and a runner plate 14 having a passage 13 for distributing molten resin from a molding machine (not shown) is fixed with bolts 25 or the like. The runner plate 14 is fixed to the mounting plate 15, and the runner plate 14 is arranged with a gap between the fixed mold 11 and the fixed mounting plate 15.
これはランナプレート１４には図示していないが、外周
にヒータ或いはカートリッジを設けであるのでその熱絶
縁のためである。This is for thermal insulation since the runner plate 14 is provided with a heater or cartridge on its outer periphery, although this is not shown.
ランチプレート１４の通路１３の中央部分１３Ａは固定
取付板１５に取付けたスプールブツシュ１６により成形
機に連通し、下向き通路１３Ｂはランナプレート１４に
螺着したランナノズル１７の通路１８に接している。A central portion 13A of the passage 13 of the launch plate 14 communicates with the molding machine through a spool bush 16 attached to a fixed mounting plate 15, and a downward passage 13B contacts a passage 18 of a runner nozzle 17 screwed onto the runner plate 14.
ランナノズル１７の外周にはバンドヒータ１９を設け、
その外周は熱絶縁のため固定型１１に対し空隙を有して
いる。A band heater 19 is provided on the outer periphery of the runner nozzle 17,
Its outer periphery has a gap with respect to the fixed mold 11 for thermal insulation.
またランナノズル１７は固定型１１に嵌挿したランナブ
ツシュ２０に断熱材カラー２１を介して接しており、ラ
ンナブツシュ２０の通路２２はランナノズルの通路１８
に接しているので、溶融樹脂から通路１３．１８そして
２２を流れて、固定型１１と可動型２３のキャビティ内
に流入して成形品２４になる。Further, the runner nozzle 17 is in contact with a runner bushing 20 fitted into the fixed mold 11 via a heat insulating collar 21, and the passage 22 of the runner bushing 20 is connected to the passage 18 of the runner nozzle.
, the molten resin flows through the passages 13, 18 and 22, flows into the cavities of the fixed mold 11 and the movable mold 23, and becomes the molded product 24.
かかる構成のホットランナ機構においては、ランナプレ
ート１４とランナブツシュ２０の座との間隙Ｓは断熱材
カラー２１により寸法調整をしているものの、熱膨張に
よる変形の吸収はかなり困難であってランチノズル１７
とランナブツシュ２０の合せ面Ａから樹脂洩れを発生し
易い。In the hot runner mechanism having such a configuration, although the dimension of the gap S between the runner plate 14 and the seat of the runner bush 20 is adjusted by the heat insulating collar 21, it is quite difficult to absorb deformation due to thermal expansion, and the launch nozzle 17
Resin is likely to leak from the mating surface A of the runner bushing 20.
洩れた溶融樹脂はランチノズル１７と固定型１１と空隙
ならびにランチプレート１４と固定型１１および固定取
付板１５との空隙に流出し、それぞれのヒータの断線を
発生させたりその修理のためにヒータを取出すとき多く
の手間を必要とした。The leaked molten resin flows into the gap between the launch nozzle 17 and the fixed mold 11 and the gap between the launch plate 14 and the fixed mold 11 and the fixed mounting plate 15, causing a break in each heater or requiring the heater to be replaced for repair. It took a lot of effort to take it out.
さらに断熱カラーの調整が不具合のときは断熱効果が悪
くランナノズル１７の通路１８の小径部であるゲート部
において樹脂ヅマリをおこすことがあった。Furthermore, when the heat insulating collar is improperly adjusted, the heat insulating effect is poor, and resin sludge may occur at the gate portion, which is the small diameter portion of the passage 18 of the runner nozzle 17.
本考案はかかる欠点を除去したものでその目的は、樹脂
洩れと樹脂ヅマリを阻止することによりメンテナンスを
容易にしたホットランナ機構を提供することにある。The present invention eliminates these drawbacks, and its purpose is to provide a hot runner mechanism that facilitates maintenance by preventing resin leakage and resin accumulation.
以下本考案の詳細を一実施例である第２図について説明
する。The details of the present invention will be explained below with reference to FIG. 2, which is an embodiment.
なお従来例である第１図と同一部材は同一符号を付して
詳しい説明を省略し異なる部分についてのみ説明する。Note that the same members as those in FIG. 1, which is a conventional example, are given the same reference numerals, detailed explanations are omitted, and only different parts will be explained.
ランナプレート３１は通路１３Ｂの付近にネジを設けて
いないことのみ第１図の場合と異なるがそれ以外は第１
図と同様である。The only difference between the runner plate 31 and the one shown in FIG. 1 is that no screws are provided near the passage 13B;
It is similar to the figure.
ランナノズル３２はその下面に断熱材カラー３３を介し
て支持手段としての固定型１１にランチプレート３１に
より押圧されている。The runner nozzle 32 is pressed by a launch plate 31 onto a fixed die 11 serving as a support means via a heat insulating collar 33 on its lower surface.
ランチノズル下面にはランナブツシュ３４が螺着され、
かつランナブツシュ３４の下端は熱膨張を考慮して組立
時は図示の位置より上方にある。A runner bushing 34 is screwed onto the lower surface of the launch nozzle.
In addition, the lower end of the runner bush 34 is located above the position shown in the figure when assembled, taking into account thermal expansion.
従って溶融樹脂は成形板（図示せず）から通路１３゜１
８そして２２を流れて固定型１１と可動型２３のキャビ
ティ内に射出される。Therefore, the molten resin flows from the forming plate (not shown) to the passage 13°1.
8 and 22 and is injected into the cavities of the fixed mold 11 and the movable mold 23.
第３図は本考案の他の実施例を示したもので、ランナプ
レート４１の通路１３Ａの中心から通路１３Ｂの中心ま
での距離りが小さい場合は、ランナプレート４１の熱膨
張による変形の影響は無視し得るのでランナノズル４２
をランナプレート４１に螺着した例で、その他の部分は
第２図と同様である。FIG. 3 shows another embodiment of the present invention, in which when the distance from the center of the passage 13A to the center of the passage 13B of the runner plate 41 is small, the effect of deformation due to thermal expansion of the runner plate 41 is small. Since it can be ignored, runner nozzle 42
This is an example in which the runner is screwed onto the runner plate 41, and the other parts are the same as those in FIG.
本考案におけるホットランナ機構は上述したようにラン
ナノズルとランナブツシュを螺着したので、ランチプレ
ートとランナブツシュは加熱により熱膨張するが図にお
いて上下方向の熱膨張は、ランチノズルの下面Ｂは固定
型に対し１寸法の空隙があり、またランナブツシュ先端
は成形品に面しているので熱膨張を吸収する。In the hot runner mechanism of the present invention, the runner nozzle and runner bush are screwed together as described above, so the launch plate and runner bush expand thermally due to heating. There is a one-dimensional air gap and the runner bushing tips face the molded part to absorb thermal expansion.
さらにランナプレートが左右方向に熱膨張したときは（
第２図の場合）ランナプレートの合せ面Ｃの滑りによっ
て吸収される。Furthermore, when the runner plate thermally expands in the left and right direction (
(In the case of Fig. 2) It is absorbed by the slippage of the mating surface C of the runner plate.
されに従来例ではランチノズルとランナブツシュは断熱
材カラーを介して押付けているので押付力が不足すると
樹脂洩れを発生したが、本考案ではランナノズルとラン
ナブツシュはネジにより強固に結合しているので樹脂洩
れは完全になくなった。In addition, in the conventional example, the launch nozzle and runner bushing are pressed together through an insulating material collar, so resin leakage occurs if the pressing force is insufficient, but in the present invention, the runner nozzle and runner bushing are firmly connected by screws, so resin leakage does not occur. is completely gone.
加うるにランナノズルとランナブツシュは単に締め付け
るのみの単純作業であるから、従来例のように断熱材カ
ラーの調整不良による断熱効果の不具合に起因するラン
チノズル通路内のゲートの樹脂ヅマリもなくなる等本考
案は多くの利点を有するものである。In addition, since the runner nozzle and runner bushings are simply tightened, this invention eliminates resin build-up at the gate in the launch nozzle passageway, which is caused by problems with the insulation effect due to improper adjustment of the insulation collar, as in conventional cases. has many advantages.
第１図は従来例の断面図、第２図は本考案の一実施例に
おける断面図、第３図は本考案の他の実施例における断
面図である。
３１．４１・・・・・・ランナプレート、３２．４２・
・・・・・ランナノズル、３４・・・・・・ランナブツ
シュ、１１・・・・・・支持手段（固定型）。FIG. 1 is a cross-sectional view of a conventional example, FIG. 2 is a cross-sectional view of one embodiment of the present invention, and FIG. 3 is a cross-sectional view of another embodiment of the present invention. 31.41...Runner plate, 32.42.
...Runner nozzle, 34...Runner bush, 11...Support means (fixed type).
Claims (1)
プレートと、中央部に設けた通路を前記ランチプレート
の通路に面して前記ランナプレートに基端部を押圧或い
は螺着したランナノズルと、同じく中央部に設けた通路
を前記ランナーノズルの通路に面した前記ランナーノズ
ルの先端部に基端部を螺着したランナブツシュと、前記
ランチノズルの自由端側および前記ランナブツシュをこ
れらの前記通路に沿う方向に移動可能に支持する支持手
段とを具備したことを特徴とするホットランナ機構。A runner plate having a passage for distributing the molten resin of the molding machine, and a runner nozzle having a passage provided in the center facing the passage of the launch plate and a base end pressed or screwed onto the runner plate. A runner bush whose base end is screwed to the tip of the runner nozzle facing the passage of the runner nozzle with a passage provided in the center, and a free end side of the launch nozzle and the runner bush in a direction along these passages. 1. A hot runner mechanism, comprising: support means for movably supporting the runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15280979U JPS6039239Y2 (en) | 1979-11-02 | 1979-11-02 | hot runner mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15280979U JPS6039239Y2 (en) | 1979-11-02 | 1979-11-02 | hot runner mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5669422U JPS5669422U (en) | 1981-06-09 |
| JPS6039239Y2 true JPS6039239Y2 (en) | 1985-11-25 |
Family
ID=29383656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15280979U Expired JPS6039239Y2 (en) | 1979-11-02 | 1979-11-02 | hot runner mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039239Y2 (en) |
-
1979
- 1979-11-02 JP JP15280979U patent/JPS6039239Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5669422U (en) | 1981-06-09 |
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