JPS602906Y2 - Nozzle for injection molding machine - Google Patents
Nozzle for injection molding machineInfo
- Publication number
- JPS602906Y2 JPS602906Y2 JP4264078U JP4264078U JPS602906Y2 JP S602906 Y2 JPS602906 Y2 JP S602906Y2 JP 4264078 U JP4264078 U JP 4264078U JP 4264078 U JP4264078 U JP 4264078U JP S602906 Y2 JPS602906 Y2 JP S602906Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- injection molding
- molding machine
- spiral groove
- tip
- 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
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 本考案は射出成形機用ノズルに関するものである。[Detailed explanation of the idea] The present invention relates to a nozzle for an injection molding machine.
従来より、射出成形機のノズルには一般に第４図に示す
如く溶融樹脂の混練効果を上げるために縮径部５を設け
る形式が多く、一方ノズルの先端は金型に接しているの
で射出成形機の他の部分に比して低温であり、此等の理
由から射出成形機のノズルは樹脂詰りか生じ易く、この
為ノズルの先端にヒーター６を取付けて加熱する必要等
があった。Conventionally, the nozzle of an injection molding machine has generally been provided with a reduced diameter part 5 in order to improve the kneading effect of the molten resin, as shown in Fig. The temperature is lower than that of other parts of the machine, and for this reason, the nozzle of the injection molding machine tends to become clogged with resin, and for this reason it is necessary to heat it by attaching a heater 6 to the tip of the nozzle.
本考案は上記の点に鑑みて、樹脂詰りのないノズルを提
供する為になされたものでその要旨は、先端の内部に螺
旋溝が設けられたことを特徴とする射出成形機用ノズル
に存する。In view of the above points, the present invention was devised to provide a nozzle free from resin clogging, and its gist resides in a nozzle for an injection molding machine characterized by a spiral groove provided inside the tip. .
本考案ノズルの一実施例を図面によって説明すると、１
は縮径部を有さぬノズルの先端２の内部に設けられた螺
旋溝であり、３はシリンダーヘッド、４はシリンダーヘ
ッド３の側周に取付けられたバンドヒーターで、ノズル
はシリンダーヘッド３に螺入されている。One embodiment of the nozzle of the present invention will be explained with reference to the drawings.
is a spiral groove provided inside the tip 2 of the nozzle that does not have a diameter-reducing part, 3 is the cylinder head, 4 is a band heater attached to the side circumference of the cylinder head 3, and the nozzle is attached to the cylinder head 3. It is screwed in.
第２図に示す如く、螺旋溝１の勾配は約３０度にして又
第３図に示す如くその断面は角部を有さぬ滑らかな曲線
からなる形状になされている。As shown in FIG. 2, the slope of the spiral groove 1 is about 30 degrees, and as shown in FIG. 3, its cross section is formed into a smooth curve with no corners.
螺旋溝１は本実施例ではフラットノズルに設けられた例
を示しているが、他の一般的ノズル例えばフリースロー
ノズル、テーパー付ノズル、オリフィスノズル等にも広
く設けられ得る。In this embodiment, the spiral groove 1 is provided in a flat nozzle, but it can be widely provided in other general nozzles such as a free-throw nozzle, a tapered nozzle, an orifice nozzle, and the like.
又本考案射出成形機用ノズルには一般の熱可塑性樹脂全
般が使用され得るが就中混練に依り自己発熱が活発とな
る塩化ビニル樹脂等が好適である。Although all general thermoplastic resins can be used in the nozzle for the injection molding machine of the present invention, vinyl chloride resin, etc., which actively generate heat upon kneading, is particularly suitable.
本考案射出成形機用ノズルは先端の内部に螺旋溝が設け
られているので、樹脂の射出時に該樹脂に対して剪断応
力が付与され、その結果樹脂の自己発熱が顕著になると
共に混練効果も高められ、ノズル先端に縮径部を設けた
りヒーターを設けたりする必要性が軽減されるのである
。Since the nozzle for the injection molding machine of this invention has a spiral groove inside the tip, shear stress is applied to the resin during injection of the resin, and as a result, self-heating of the resin becomes noticeable and the kneading effect is also reduced. This reduces the need to provide a reduced diameter section or a heater at the nozzle tip.
尚、縮径部を有さぬ場合は樹脂詰まり軽減の効果が更に
高められる。Note that when the diameter-reduced portion is not provided, the effect of reducing resin clogging is further enhanced.
第１図は本考案ノズルの一実施例を示す側面図にして路
上半分は断面を表わし、第２図は同上螺旋溝部分の展開
図、第３図は同上の断面図、第４図は従来例を示す側断
面図にして上半分は断面を表わすものである。
符号の説明、１・・・・・・螺旋溝、２・・・・・・先
端、５・・・・・・縮径部。Fig. 1 is a side view showing one embodiment of the nozzle of the present invention, with half of the road showing a cross section, Fig. 2 is a developed view of the spiral groove portion of the same, Fig. 3 is a sectional view of the same, and Fig. 4 is a conventional nozzle. It is a side sectional view showing an example, and the upper half represents a cross section. Explanation of symbols: 1...Spiral groove, 2...Tip, 5...Reduced diameter portion.
Claims (1)
成形機用ノズル。A nozzle for an injection molding machine characterized by a spiral groove provided inside the tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4264078U JPS602906Y2 (en) | 1978-03-31 | 1978-03-31 | Nozzle for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4264078U JPS602906Y2 (en) | 1978-03-31 | 1978-03-31 | Nozzle for injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54143880U JPS54143880U (en) | 1979-10-05 |
| JPS602906Y2 true JPS602906Y2 (en) | 1985-01-26 |
Family
ID=28915522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4264078U Expired JPS602906Y2 (en) | 1978-03-31 | 1978-03-31 | Nozzle for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS602906Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0140660Y2 (en) * | 1985-03-15 | 1989-12-05 |
-
1978
- 1978-03-31 JP JP4264078U patent/JPS602906Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54143880U (en) | 1979-10-05 |
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