JP3014793U - Heating tube of thermosetting injection molding machine - Google Patents
Heating tube of thermosetting injection molding machineInfo
- Publication number
- JP3014793U JP3014793U JP1995001722U JP172295U JP3014793U JP 3014793 U JP3014793 U JP 3014793U JP 1995001722 U JP1995001722 U JP 1995001722U JP 172295 U JP172295 U JP 172295U JP 3014793 U JP3014793 U JP 3014793U
- Authority
- JP
- Japan
- Prior art keywords
- heating cylinder
- nozzle
- molding machine
- injection molding
- atmosphere
- 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 - Lifetime
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】 熱硬化性射出成形機において、加熱筒内で原
料樹脂の可塑化または射出時に発生するガス分を大気に
効果的に脱気して、ガス焼け、ふくれ、ショート等の成
形不良を防止する。
【構成】 加熱筒前部に螺合するノズルの加熱筒との当
り面に脱気用溝を放射状に設け、ノズル外周の環状段部
で形成する環状空所に連通しさらに該環状空所と大気と
を連通する連通孔を加熱筒に設けた。
(57) [Abstract] [Purpose] In a thermosetting injection molding machine, the gas component generated during plasticizing or injecting the raw material resin in the heating cylinder is effectively degassed to the atmosphere, and gas burning, blistering, and shorting occur. To prevent defective molding. [Constitution] A degassing groove is radially provided on the contact surface of the nozzle screwed to the front part of the heating cylinder with the heating cylinder, and communicates with an annular space formed by an annular stepped portion on the outer periphery of the nozzle, and further to the annular space The heating cylinder was provided with a communication hole communicating with the atmosphere.
Description
【０００１】[0001]
熱硬化性射出成形機において、成形時に発生するガス分を可塑化時や射出時に 有効に脱気するための技術に関する。 TECHNICAL FIELD The present invention relates to a technology for effectively degassing a gas component generated during molding in a thermosetting injection molding machine during plasticization or injection.
【０００２】[0002]
熱硬化性射出成形機では、原料樹脂の可塑化時や射出時には熱による化学反応 によってガス分（有機ガス、水分等）が多量に発生する。 従来はこのための対応として、金型キャビティ内を真空吸引したり、ガス分の 発生が少ない原料樹脂を開発したがいずれも十分ではなかった。 In a thermosetting injection molding machine, a large amount of gas components (organic gas, moisture, etc.) is generated by a chemical reaction due to heat during plasticization or injection of a raw material resin. Conventionally, as a countermeasure for this, vacuum suction inside the mold cavity and development of a raw material resin with a small amount of gas generation were carried out, but neither was sufficient.
【０００３】[0003]
前記ガス分を含んだ半溶融樹脂が金型に充填されると、成形品の表面や内部に ガス分が残留してガス焼け、ふくれ、ショートショット等の成形不良を引き起こ すことになる。 また、金型のキャビティ表面にガス分が残り、次ショットの成形品の表面に転 写してくもり等の外観不良の原因ともなる。 When the mold is filled with the semi-molten resin containing the gas component, the gas component remains on the surface or inside of the molded product, causing molding defects such as gas burning, blistering, and short shot. In addition, a gas component remains on the surface of the cavity of the mold, and the gas is transferred to the surface of the molded product of the next shot, which may cause a defective appearance such as cloudiness.
【０００４】[0004]
そこで、先端部に着脱可能に螺着したノズルを備えた熱硬化性射出成形機の加 熱筒において、 該ノズルの雄螺子と直交する面であって、該加熱筒の先端部との当たり面にガ ス分を通過させる放射状溝を環状段部に至るように設けるとともに、該環状段部 により形成される環状空所と大気が連通する通気孔を加熱筒に設けたのである。 Therefore, in a heating cylinder of a thermosetting injection molding machine equipped with a nozzle detachably screwed to the tip, a surface orthogonal to the male screw of the nozzle and a contact surface with the tip of the heating cylinder. A radial groove for passing the gas is provided so as to reach the annular step portion, and a ventilation hole for communicating the atmosphere with the annular space formed by the annular step portion is provided in the heating cylinder.
【０００５】[0005]
このように構成することにより、可塑化時や射出時に半溶融樹脂から発生する ガス分を効果的に大気に脱気することが可能となった。 With this structure, it is possible to effectively degas the gas generated from the semi-molten resin during plasticization or injection into the atmosphere.
【０００６】[0006]
次に図１に基ずいて本考案を詳細に説明する。 図１の（ａ）は本考案の一実施例を示す断面図である。（ｂ）は（ａ）におけ るＡ−Ａ断面図である。 １はノズルであり、加熱筒２の先端部に螺着している。３はスクリュであり加 熱筒２に往復動および回転可能に嵌挿している。 ノズル１の雄螺子８と直交する当たり面６は加熱筒２の先端部に設けた雌螺子 ９と直交する面と、ノズル１を加熱筒２に螺入することによって密接するのであ る。ノズル１の当たり面６が加熱筒２に密接した状態では、ノズル１の樹脂通路 である内部孔の形状は、スクリュ３の先端部を形成する円錐とほぼ同一としその 表面は加熱筒２の内部孔と連続的に滑らかに接続している。 Next, the present invention will be described in detail with reference to FIG. FIG. 1A is a sectional view showing an embodiment of the present invention. (B) is an AA sectional view in (a). Reference numeral 1 denotes a nozzle, which is screwed to the tip of the heating cylinder 2. A screw 3 is fitted in the heating cylinder 2 so as to be reciprocally movable and rotatable. The contact surface 6 of the nozzle 1 that is orthogonal to the male screw 8 is in close contact with the surface of the heating cylinder 2 that is orthogonal to the female screw 9 provided at the tip of the heating cylinder 2 by screwing the nozzle 1 into the heating cylinder 2. When the contact surface 6 of the nozzle 1 is in close contact with the heating cylinder 2, the shape of the internal hole that is the resin passage of the nozzle 1 is almost the same as the cone that forms the tip of the screw 3, and its surface is the inside of the heating cylinder 2. The holes are connected smoothly and continuously.
【０００７】 ノズル１の当たり面６には図１（ｂ）に示す如く、中心から放射状に数ミクロ ンから数１０ミクロンの深さの溝７を、ノズル１の当たり面６を横断して、ノズ ル外周の当たり面側に設けた環状段部に至るまで設けている。 さらに、ノズル１を加熱筒２に螺着したとき該環状段部５により形成される環 状空所１０と大気が連通するように、通気孔４を加熱筒２に設けた。As shown in FIG. 1 (b), on the contact surface 6 of the nozzle 1, a groove 7 having a depth of several microns to several tens of microns is radiated from the center and traverses the contact surface 6 of the nozzle 1. It is provided up to the annular step provided on the contact surface side of the outer periphery of the nozzle. Further, a ventilation hole 4 is provided in the heating cylinder 2 so that when the nozzle 1 is screwed into the heating cylinder 2, the annular space 10 formed by the annular step portion 5 communicates with the atmosphere.
【０００８】[0008]
上記の様に構成したことにより、可塑化時または射出時に、放射状溝から環状 空所を経由して連通孔よりガス分を効果的に脱気させることが可能となるので、 ガス分に起因する成形不良を低減することが出来る。 With the above configuration, it is possible to effectively degas the gas component from the communication hole through the annular groove via the annular cavity during plasticization or injection, which is caused by the gas component. Molding defects can be reduced.
【図１】（ａ）は本考案の一実施例を示す断面図であ
る。（ｂ）は（ａ）におけるＡ−Ａ断面図である。FIG. 1A is a sectional view showing an embodiment of the present invention. (B) is an AA sectional view in (a).
１ ノズル ２ 加熱筒 ３ スクリュ ４ 連通孔 ５ 環状段部 ６ 当たり面 ７ 放射状溝 ８ 雄螺子 ９ 雌螺子 １０ 環状空所 1 Nozzle 2 Heating Cylinder 3 Screw 4 Communication Hole 5 Annular Step 6 Contact Surface 7 Radial Groove 8 Male Screw 9 Female Screw 10 Annular Void
Claims (1)
えた熱硬化性射出成形機の加熱筒において、 該ノズルの雄螺子と直交する面であって、該加熱筒の先
端部との当たり面にガス分を通過させる放射状溝をノズ
ル外周の環状段部に至るように設けるとともに、該環状
段部により形成される環状空所と大気が連通する通気孔
を加熱筒に設けたことを特徴とする熱硬化性射出成形機
の加熱筒。1. A heating cylinder of a thermosetting injection molding machine equipped with a nozzle detachably screwed to a tip thereof, the heating cylinder being a surface orthogonal to the male screw of the nozzle and the tip of the heating cylinder. A radial groove for passing a gas component is provided on the contact surface so as to reach an annular step portion on the outer circumference of the nozzle, and a ventilation hole for communicating the atmosphere with the annular space formed by the annular step portion is provided in the heating cylinder. A heating cylinder for a thermosetting injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995001722U JP3014793U (en) | 1995-02-15 | 1995-02-15 | Heating tube of thermosetting injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995001722U JP3014793U (en) | 1995-02-15 | 1995-02-15 | Heating tube of thermosetting injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3014793U true JP3014793U (en) | 1995-08-15 |
Family
ID=43150385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1995001722U Expired - Lifetime JP3014793U (en) | 1995-02-15 | 1995-02-15 | Heating tube of thermosetting injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3014793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010505673A (en) * | 2006-10-23 | 2010-02-25 | ハンド スチール カンパニー リミテッド | Nozzle assembly for injection machine |
| JP2016137632A (en) * | 2015-01-27 | 2016-08-04 | ファナック株式会社 | Nozzle for injection molding machine |
-
1995
- 1995-02-15 JP JP1995001722U patent/JP3014793U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010505673A (en) * | 2006-10-23 | 2010-02-25 | ハンド スチール カンパニー リミテッド | Nozzle assembly for injection machine |
| JP2016137632A (en) * | 2015-01-27 | 2016-08-04 | ファナック株式会社 | Nozzle for injection molding machine |
| US9782920B2 (en) | 2015-01-27 | 2017-10-10 | Fanuc Corporation | Nozzle for injection molding machine |
| DE102016000542B4 (en) | 2015-01-27 | 2022-03-31 | Fanuc Corporation | Resin injection nozzle for an injection molding machine |
| DE102016000542B9 (en) | 2015-01-27 | 2023-02-23 | Fanuc Corporation | Resin injection nozzle for an injection molding machine |
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