JPS58209539A - Injection molding machine - Google Patents
Injection molding machineInfo
- Publication number
- JPS58209539A JPS58209539A JP9347582A JP9347582A JPS58209539A JP S58209539 A JPS58209539 A JP S58209539A JP 9347582 A JP9347582 A JP 9347582A JP 9347582 A JP9347582 A JP 9347582A JP S58209539 A JPS58209539 A JP S58209539A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- cylinder
- molding machine
- injection molding
- piston
- 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.)
- Pending
Links
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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C2045/5004—Axially movable screw the forward screw end provided with an injection ram
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
１発明の技術分野］
本発明は寸払精曵が＾く、発泡のない成；杉晶庖成形し
得る射出成形機に関する。DETAILED DESCRIPTION OF THE INVENTION 1. Technical Field of the Invention The present invention relates to an injection molding machine that is capable of performing cedar crystal molding without foaming and having a small amount of precision.
［発明の技物的背＃４１
最近、合成樹脂の射出成形品は厚肉化傾向にあり、さら
にガラス繊維や各神充填剤を混入しｃ高強度、難燃Ｆ１
等をもたせることにより、その用途はエンジュアプラス
チックの分野にまで拡大してさている。ぞのＩこめ特性
、１法精度ともに高水卑の射出成形品を成形し得る割出
成形機の開発が強く望まれている。[Technical and physical backbone of the invention #41 Recently, synthetic resin injection molded products have tended to have thicker walls, and glass fibers and various fillers have been mixed in to create high-strength, flame-retardant F1 products.
By adding these features, its applications have expanded to include the field of Endure Plastics. There is a strong desire for the development of an index molding machine that can mold injection molded products with both high I-input characteristics and single-method precision.
第１図は、従来の射出スクリュ−１を射出シリンダー２
内に内装しｌご割出成形機の一例を図示しＩ、：もので
ある。割出シリンダー２および割出用スクリ１−１の後
部には、このスクリ１−１を駆動させる駆動機構４が設
けられ、前部のヘッドには固定金型５ａと移動金型５ｂ
からなる金型５が樹脂通路を一致さＩ！（固定されてい
る。Figure 1 shows a conventional injection screw 1 and an injection cylinder 2.
An example of an indexing molding machine is shown in the figure. A drive mechanism 4 for driving the indexing cylinder 2 and the indexing screen 1-1 is provided at the rear of the indexing cylinder 2 and the indexing screen 1-1, and a fixed mold 5a and a movable mold 5b are mounted on the front head.
The mold 5 consisting of matches the resin passage I! (Fixed.
このような割出成形機においては、まず、スクリュー１
の回転によりホッパー３内の合成樹脂が割出シリンダー
２内に送り込まれ、溶融混練され＜１がら順次前進し、
イの先端部に蓄積される。スクリ１−１がさらに回転を
続ＧＪることにより先一部に順次溶融した合成樹脂が蓄
積される一ｈ、スクリＪ−４１後退し１割出分の合成樹
、脂が蓄積したどころで停止づる。しかるのら後部の駆
動機構４によりスクリ１−が前進し、溶融蓄積された合
成樹脂６が金型５内に充填され、次いで冷却固化され（
成形品が得られる。In such an index molding machine, first, the screw 1
By the rotation of , the synthetic resin in the hopper 3 is fed into the indexing cylinder 2, melted and kneaded, and sequentially advances from
Accumulates at the tip of the a. As the Screw 1-1 continues to rotate further, the molten synthetic resin is accumulated in the tip part one hour. Screw J-41 retreats and stops when 10% of the synthetic resin and resin have accumulated. Zuru. Then, the screen 1- is advanced by the drive mechanism 4 at the rear, and the mold 5 is filled with the molten and accumulated synthetic resin 6, which is then cooled and solidified (
A molded product is obtained.
［曲順技術の問題点１
このような従来の射出成形機では、合成樹脂が金型内で
冷却固化される間に合成樹脂の熱収縮によるヒフや気泡
が生じ易く、成形品に歪みや変形が起こることは避けら
れず寸法精度の高い製品を得ることは困Ｍ′ｃある。[Problem with track order technology 1] In such conventional injection molding machines, huffs and bubbles are likely to occur due to thermal contraction of the synthetic resin while it is cooled and solidified in the mold, causing distortion and deformation in the molded product. This is unavoidable and it is difficult to obtain a product with high dimensional accuracy.
このような問題を解決するには溶融樹脂の金ｙ１内への
充填射出圧力を高くし、かつこの状態を保持したまま冷
却同化を行うようにすればよく、縁近かなり高い射出圧
７Ｊの射出成形機も開Ｒされ（いる。しかしながらスク
リコ一式の射出成形機においては高圧になればなる稈ス
クリュースリットからのバラフッ【コーは人となり、充
分な効果を得ることが難しくなる。またこのバラフッ［
１−防ＩＩのためにチェックリング等を使用したものも
知られているがチェックリング等を使用すれば硬質塩化
ビニル樹脂のような溶融粘麿の高い合成樹脂（゛は合成
樹脂の滞留による焼けが生じ易くなるという轢点がある
。To solve this problem, it is sufficient to increase the injection pressure for filling the molten resin into the gold y1, and to perform cooling assimilation while maintaining this state. The molding machine is also opened. However, when the pressure is high in the injection molding machine of the Scrico set, the loose fluid from the culm screw slit increases, making it difficult to obtain a sufficient effect.
1-It is known that a check ring or the like is used for prevention II, but if a check ring or the like is used, synthetic resin with high molten viscosity such as hard vinyl chloride resin (2) will prevent burns due to retention of synthetic resin. There is a turning point where this becomes more likely to occur.
さらにこのような射出成形機では、スクリＥＬ−Ｉｉ向
に高圧力を受けるのぐスクリコー材質の座屈強度との関
係からあまりスクリコ−の長さを良くＣ−さないといつ
間Ｍ ｂある。Furthermore, in such an injection molding machine, if the length of the scrico EL-Ii is not set very well due to the relationship with the buckling strength of the scrico material which is subjected to high pressure in the direction of the scrio EL-Ii, Mb will be lost.
１発明の【」的１
本発明はこのよう４１事情に駐づきなされたしの（・、
合成樹脂の熱収縮に１■ｔＪか）ような高い射出１１力
をもら、しかし溶融樹脂の滞留をきたりようなバックノ
ロ−を起こさず、イの結果精密で高品質な成形品が得ら
れる射出成形機を提供しようと−ｄ ６ ｂのぐある。1 Purpose of the Invention 1 The present invention was made in view of these 41 circumstances.
Injection molding that generates high injection force such as 1 tJ due to thermal contraction of synthetic resin, but does not cause back seepage that causes stagnation of molten resin, resulting in precise and high quality molded products. Trying to provide an opportunity - d 6 b.
（光用の概ｆｉ１
ヴなわら本発明の割出成形機は、スクリ〕−が前進しく
シリンダ内の溶融樹脂をヘッド先端に装機した金型内に
１１人４るようにした射出成形機にＪｊい（、前記スク
リ」−の先端に、このスクリューより小ＩＹの内争１状
ピストン部を突設し、かつ前記［＼ラドの樹脂通路に前
記円柱状ピストン部を受入れるノズルシリンダ一部を形
成して成ることを特徴どりる。The index molding machine of the present invention is an injection molding machine in which 11 people are placed in a mold whose head tip is filled with molten resin in a cylinder in which the screen moves forward. At the tip of the screw, a small IY 1-shaped piston part is protruded from the screw, and a part of the nozzle cylinder that receives the cylindrical piston part in the resin passage of the screw. It is characterized by forming.
１発明の実施例１
以゛［・本発明の一実施例を図面を用いて詳細に説明す
る。Embodiment 1 of the Invention An embodiment of the present invention will now be described in detail with reference to the drawings.
第２図は本発明の割出成形機の一実施例の東部の縦断面
図で・ある。なＪ３、同図において第１図と」ξ通４６
部分には同一の旬月を付しである１゜第２図において、
符号１は図示を省略した駆動機構により射出シリンダー
２中で、前後進および回転可能なスタリＬ−で、その先
端には回動軸と同軸に円ｅＪ状ピストン部７が突設され
ている。割出シリンダー２の先端にＨ＠されたヘッド］
１の樹脂通路にはこの円ＩＪ状ピストン部７を受入れる
ノズルシリンダ一部８が形成されている。さらにヘッド
１１のノズルシリンダ一部８の後方に１五溶融樹脂６ｂ
を一時的に逃がす逃げ場９が設けられている１、この逃
げ場９は油圧シリンダー１０のピストンの前後進により
開閉自在とされている。FIG. 2 is a longitudinal sectional view of the eastern part of an embodiment of the indexing machine of the present invention. J3, in the same figure, Figure 1 and 'ξ street 46
In Figure 2, 1゜ where the same month and month are attached to the parts,
Reference numeral 1 denotes a star L- which is movable forward and backward and rotatable in the injection cylinder 2 by a drive mechanism (not shown), and has a circular eJ-shaped piston portion 7 protruding from its tip coaxially with the rotation axis. Head marked at the tip of index cylinder 2]
A nozzle cylinder part 8 for receiving this circular IJ-shaped piston part 7 is formed in the resin passage 1. Furthermore, 15 molten resin 6b is placed behind the nozzle cylinder part 8 of the head 11.
An escape place 9 is provided for temporarily escaping 1, and this escape place 9 can be opened and closed by the forward and backward movement of the piston of the hydraulic cylinder 10.
上記構成の射出成形機を用いて射出成形りるには、まず
スクリュー１０回転により図示を省略した小ツバ−より
送り込まれた合成樹脂６ａは射出シリンダー２内を溶融
混練されながら順次前進し、次いで内Ｊモによりスクリ
ュー１は後返し、１射出−分の溶融樹脂６ｂが蓄ＦＩ！
Ｉされた位置Ｔ−停止ψる。To carry out injection molding using the injection molding machine having the above configuration, first, the synthetic resin 6a fed through a small collar (not shown) by 10 revolutions of the screw is sequentially advanced inside the injection cylinder 2 while being melted and kneaded. The screw 1 is turned back by the inner J mo, and the molten resin 6b for 1 injection is stored in the FI!
I position T - stop ψ.
続いて後部の駆ｖＪ機構からの１１’ ７３でスクリ」
−１は前進し、射出工程に入る。Next, 11' 73 from the rear driving mechanism.
-1 moves forward and enters the injection process.
次い（゛円社状ピストン部７かノズルシリンダ一部８端
に接触した段階（ノズルシリンダ一部８内の溶融樹１１
１ｊ６ｃＧ、を割出シリンダー２内の溶融樹脂６１＋と
分離され、逃げ場９は油に、シリンダー１０のピストン
の後退に伴なって順次開放される。スクリ］−゛１は前
進をＭ：ｃノ円れ状ピストン部７がノズルシリンダ一部
８内に侵入す゛るにと６ないノズルシリンダ一部８後り
の溶融樹脂、６ｂは逃げ場９に入る。その結束割出１＝
ツノは、スクリ」−経より小さな内径をもつ円ＩＪ状ピ
ストン部断面に加えられ、ノズルシリンダー８１１Ｂ内
の溶融樹脂６ｃを介しく高い射出Ｊｊ力が金型５内に加
えられ、溶融樹脂６Ｃの一部が高ｆ１て・ら−）て金型
５内に補充充填される。金型内に１ｆ人された溶融樹脂
６ｄは、この高圧Ｆて・冷ｆＪｌ固化され金型５内の型
窩どおりの形状に成形される。Next (the stage where the circular piston part 7 contacts the end of the nozzle cylinder part 8 (the melted wood 11 inside the nozzle cylinder part 8)
1j6cG is separated from the molten resin 61+ in the indexing cylinder 2, and the escape area 9 is sequentially opened to oil as the piston of the cylinder 10 retreats. 1 moves forward M: c As the circular piston part 7 enters the nozzle cylinder part 8, the molten resin behind the nozzle cylinder part 8, 6b enters the escape area 9. The unity index 1 =
The horn is applied to the circular IJ-shaped piston cross section with an inner diameter smaller than the diameter of the screen, and a high injection force Jj is applied to the mold 5 through the molten resin 6c in the nozzle cylinder 811B, causing the injection of the molten resin 6C. A part of it is refilled into the mold 5 with high f1. The molten resin 6d placed in the mold is solidified by the high pressure F and cold fJl and molded into the shape of the mold cavity in the mold 5.
この実施例の射出成形機によれば、金型内に番よ円柱状
ビス１ヘン部とノズルシリンダ一部により＾汁が加えら
れるの（・スクリ」−スリン１へからのハックノロ−は
、完全に防１Ｆすることができる。この実施例の射出成
形機は特に硬質塩化ビニル樹脂等の溶融粘度の高い合成
樹脂に適する。According to the injection molding machine of this embodiment, the liquid is added into the mold by the cylindrical screw 1 part and part of the nozzle cylinder. The injection molding machine of this embodiment is particularly suitable for synthetic resins with high melt viscosity such as hard vinyl chloride resins.
なおオレフｒン系樹脂等の溶融粘度の低い樹脂″ｃ′【
よ、スラリー１−スリットから溶融樹脂が逃げ易いから
、図示したような逃げ場９を別に設（Ｊなくともよい。Note that resins with low melt viscosity such as olefin resins ``c'' [
Since it is easy for the molten resin to escape from the slurry 1-slit, a separate escape area 9 as shown is provided (J is not necessary).
［発明の効果１
以１−説明したように本発明の射出成形機によれば、溶
融樹脂の金型充填過程の岐路段階および金型内での冷１
］過程において高い射出バカがＨ持されるので、Ｉｌｌ
、品質ともに優れた製品を成彫りることができる。しか
もスクリ」−の推力は従来と変らないので、ム用射出成
形機の一部を改３ｉ！！Ｊるだ【ノＣもよく、また溶融
樹脂の金型充填の前段階−（゛は低割出ｊ王力でよいか
ら、射出シリンダー及びスクリ−１−の径を人さくでき
、射出ストＩＩ−りを小さくぐきるので小形化（・さ極
めて経済的て゛ある。[Effect 1 of the Invention 1] As explained above, according to the injection molding machine of the present invention, the crossroads stage of the process of filling the mold with molten resin and the cooling stage in the mold.
] In the process, a high ejection stupidity is held, so Ill
It is possible to carve products with excellent quality. Moreover, since the thrust of the screw is the same as before, a part of the injection molding machine for injection molding machine has been modified to 3i! ! J Ruda [No. - It is extremely economical because it has a small amount of space.
第１図は従来射出成形機の 例の断面図、第２図番、１
本発明の射出成形機の 実施例を示づＷ「面図ぐある。
１・・・・・・・・・・・・スクリ」−２・・・・・・
・・・・・・射出シリンダー；３・・・・・・・・・・
・・１１１ツバ−４・・・・・・・・・・・・駆動機構
ｔ）・・・・・・・・・・・・金 型
５ａ・・・・・・・・・固定金型
５）Ｉ＋・・・・・・・・・移動金型
６・・・・・・・・・・・・溶融樹脂
６ａ、６ｂ・・・溶融樹脂
７・・・・・・・・・・・円れ状ビス１−ン８・・・・
・・・・・・・・ノズルシリンダ一部９・・・・・・・
・・・・・逃げ場
］Ｉ・・・・・・・・・・・・ヘッドFigure 1 is a sectional view of an example of a conventional injection molding machine, Figure 2 is numbered 1.
An example of the injection molding machine of the present invention is shown below.
・・・・・・Injection cylinder; 3・・・・・・・・・・・・
...111 collar 4... Drive mechanism t)... Mold 5a... Fixed mold 5 )I+...Moving mold 6...Melted resin 6a, 6b...Melten resin 7...Yen Curled screw 1-8...
・・・・・・Nozzle cylinder part 9・・・・・・
・・・・・・Escape] I・・・・・・・・・・・・Head
Claims (1)
端に装着した金型内に圧入するようにしに割出成形機に
おいて、前記スクリ１−の先端に、このスクリューより
小径の円柱状ビス］ヘン部を突設し、かつ前記ｌ＼ラッ
ド樹脂通路に前記円１１状じスミ−ン部を受入れるノズ
ルシリンダ一部を形成してなることを特徴とする射出成
形機。In order for the screw to move forward and force the molten resin in the cylinder into the mold attached to the tip of the head, in the indexing molding machine, a cylindrical screw with a smaller diameter than the screw is attached to the tip of the screw 1-. An injection molding machine characterized in that a part of a nozzle cylinder is formed in the l\rad resin passage to receive the circular 11-shaped smeen part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9347582A JPS58209539A (en) | 1982-05-31 | 1982-05-31 | Injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9347582A JPS58209539A (en) | 1982-05-31 | 1982-05-31 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58209539A true JPS58209539A (en) | 1983-12-06 |
Family
ID=14083362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9347582A Pending JPS58209539A (en) | 1982-05-31 | 1982-05-31 | Injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58209539A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0868987A1 (en) * | 1997-04-05 | 1998-10-07 | Battenfeld GmbH | Device for plasticizing and injecting thermoplastics in an injection mould |
| US20160158981A1 (en) * | 2014-12-04 | 2016-06-09 | Extrude To Fill, LLC | Nozzle shut off for injection molding system |
| US9931773B2 (en) | 2014-12-04 | 2018-04-03 | Extrude To Fill, LLC | Injection molding system and method of fabricating a component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677126A (en) * | 1979-11-29 | 1981-06-25 | Yamashiro Seiki Seisakusho:Kk | Injection molding machine for high injection pressure use |
-
1982
- 1982-05-31 JP JP9347582A patent/JPS58209539A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677126A (en) * | 1979-11-29 | 1981-06-25 | Yamashiro Seiki Seisakusho:Kk | Injection molding machine for high injection pressure use |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0868987A1 (en) * | 1997-04-05 | 1998-10-07 | Battenfeld GmbH | Device for plasticizing and injecting thermoplastics in an injection mould |
| US20160158981A1 (en) * | 2014-12-04 | 2016-06-09 | Extrude To Fill, LLC | Nozzle shut off for injection molding system |
| CN107206652A (en) * | 2014-12-04 | 2017-09-26 | 加注有限责任公司 | Nozzle choking device for injection molding apparatus |
| US9808971B2 (en) * | 2014-12-04 | 2017-11-07 | Extrude To Fill, LLC | Nozzle shut off for injection molding system |
| US9931773B2 (en) | 2014-12-04 | 2018-04-03 | Extrude To Fill, LLC | Injection molding system and method of fabricating a component |
| US10086550B2 (en) | 2014-12-04 | 2018-10-02 | Extrude To Fill, LLC | Molding machine and method of molding a part |
| CN107206652B (en) * | 2014-12-04 | 2019-12-17 | 挤压满公司 | nozzle stop for an injection molding system |
| US11292178B2 (en) | 2014-12-04 | 2022-04-05 | Extrude to Fill, Inc. | Nozzle shut off for injection molding system |
| US11945150B2 (en) | 2014-12-04 | 2024-04-02 | Extrude to Fill, Inc. | Nozzle shut off for injection molding system |
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