JPH02188218A - Pinpoint gate opening and closing mold device - Google Patents
Pinpoint gate opening and closing mold deviceInfo
- Publication number
- JPH02188218A JPH02188218A JP880589A JP880589A JPH02188218A JP H02188218 A JPH02188218 A JP H02188218A JP 880589 A JP880589 A JP 880589A JP 880589 A JP880589 A JP 880589A JP H02188218 A JPH02188218 A JP H02188218A
- Authority
- JP
- Japan
- Prior art keywords
- pin
- cylinder
- pinpoint gate
- resin material
- cavity space
- 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
- 239000011347 resin Substances 0.000 abstract description 14
- 229920005989 resin Polymers 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 208000015943 Coeliac disease Diseases 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 2
- 239000010720 hydraulic oil Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000007789 sealing 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
- B29C45/28—Closure devices therefor
- B29C45/2896—Closure devices therefor extending in or through the mould cavity, e.g. valves mounted opposite the sprue channel
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding 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、射出成形において、ピンポイントゲートの直
径を拡大して射出率の拡大を図ったピンポイントゲート
開閉金型装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pinpoint gate opening/closing mold device for increasing the injection rate by increasing the diameter of the pinpoint gate in injection molding.
従来の技術
近年、ピンポイントゲート方式の金型装置において、射
出率を高くすることにより成形時間を短かくすることが
要請されている。2. Description of the Related Art In recent years, there has been a demand for a pinpoint gate type mold apparatus to shorten the molding time by increasing the injection rate.
以下、図面を参照しながら上述した従来のピンポイント
ゲートの射出率の向上の一例について説明する。Hereinafter, an example of improving the injection rate of the conventional pinpoint gate described above will be described with reference to the drawings.
第４図は、従来のピンポイントゲート方式の金型装置を
示すものである。第４図において、１はキャビティー空
間、２は１次ランナー、３は２次スプルー、４はピンポ
イントゲート部、６は２次ランナ、６はサイドゲート、
７はランナーロックピンである。FIG. 4 shows a conventional pinpoint gate type mold device. In Fig. 4, 1 is the cavity space, 2 is the primary runner, 3 is the secondary sprue, 4 is the pinpoint gate section, 6 is the secondary runner, 6 is the side gate,
7 is a runner lock pin.
以上の様に構成された金型構造を用いた成形過程を説明
する。A molding process using the mold structure configured as described above will be explained.
樹脂材料は、１次ランナー２．２次スプ１ｖ−３゜ピン
ポイントゲート部４．２次ランナー６、サイドゲート６
を通じてキャビティー空間１に流れ込む。この際、キャ
ビティー空間１へ流れ込む時間を短かくするために、ピ
ンポイントゲート部４の直径を大きく取る方法を用いる
。The resin material is primary runner 2. secondary sp 1v-3° pinpoint gate part 4. secondary runner 6, side gate 6.
It flows into the cavity space 1 through. At this time, in order to shorten the time for the fluid to flow into the cavity space 1, a method is used in which the diameter of the pinpoint gate portion 4 is increased.
発明が解決しようとする課題
しかしながら、上記のような構成では、ピンポイントゲ
ート部４の冷却に長い時間を要すること、ピンポイント
ゲート部４の切断に大きな力を要するなどの問題点を有
していた。Problems to be Solved by the Invention However, the above configuration has problems such as requiring a long time to cool down the pinpoint gate section 4 and requiring a large force to cut the pinpoint gate section 4. Ta.
課題を解決するための手段
上記問題点を解決するための技術的な手段は、可動側の
プレーＦに固定されたシリシダとシリンダにより駆動さ
れるピンを備え、このピンを前進・後退させることによ
りピンポイントゲート部を封止・開放するようにしたこ
とを特徴とする。Means for Solving the Problems The technical means for solving the above problems is to provide a pin driven by a cylinder and a cylinder fixed to the movable play F, and move this pin forward and backward. It is characterized by a pinpoint gate that can be sealed and opened.
作 用
本発明は、上記した構成によって、樹脂材料が射出され
る前にシリンダを後退させることにより、それと直結し
たピンを後退させてピンポイントゲート部を開口する。Effects According to the present invention, with the above-described configuration, by retracting the cylinder before the resin material is injected, the pin directly connected to the cylinder is retracted to open the pinpoint gate portion.
つぎに、樹脂材料が射出された後から保圧工程完了まで
の間にシリンダを前進させることにより、それと直結し
たピンを前進させてピンポイントゲート部のテーパ面と
接触させて封止する。Next, by advancing the cylinder between the time the resin material is injected and the completion of the pressure holding process, the pin directly connected to the cylinder is advanced and brought into contact with the tapered surface of the pinpoint gate portion for sealing.
実施例
以下本発明の一実施例を図面を参照しながら説・明する
。EXAMPLE Hereinafter, an example of the present invention will be described and explained with reference to the drawings.
第１図〜第３図において、１はキャビティー空間、２は
１次ランナー、３は２次スプ〜−１４はピンポイントゲ
ート部、６は２次ランナー、６はキャビティー空間１に
開口するサイドゲート、７はランナーロックピン、８は
シリンダ、９はシリンダに直結され前進・後退可能なピ
ン、１ｏはシリンダ８を固定する可動側のプレートであ
る。In Figures 1 to 3, 1 is the cavity space, 2 is the primary runner, 3 is the secondary sprue - 14 is the pinpoint gate part, 6 is the secondary runner, and 6 opens into the cavity space 1. 7 is a runner lock pin, 8 is a cylinder, 9 is a pin that is directly connected to the cylinder and can move forward and backward, and 1o is a movable plate that fixes the cylinder 8.
次に本実施例における構成の作用を説明する。Next, the operation of the configuration in this embodiment will be explained.
樹脂材料を１次ランナー２．２次スプＡ／−３゜ピンポ
イントゲート部４，２次ランナー６、サイドゲート６を
通じてキャビティー空間１に充填するに当って、樹脂材
料を射出成形機より打ち出す前にシリンダ８に油圧を流
し込み後退させることにより、シリンダ８に直結された
ピン９を後退させる。これにより、ピンポイントゲート
部４はピン９との間にすきまを生じ開口状態になる。し
かるのち、樹脂材料を流すことによ）、キャビティー空
間１に充填することができる。さらに、樹脂材料がキャ
ビティー空間１に充填された後から保圧がかかりきるま
での時間にシリンダ８に油圧を後退させた時と反対方向
に流し込み前進させることにより、シリンダ８に直結さ
れたピン９を前進させて、ピンポイントゲート部４のテ
ーパ面とピン９のテーパ面を接触させ、２次スプ／Ｉ／
−３と２次ランナー６を分離する。When filling the cavity space 1 with the resin material through the primary runner 2, secondary sp A/-3° pinpoint gate portion 4, secondary runner 6, and side gate 6, the resin material is ejected from an injection molding machine. By previously injecting hydraulic pressure into the cylinder 8 and causing it to retreat, the pin 9 directly connected to the cylinder 8 is caused to retreat. As a result, a gap is created between the pinpoint gate portion 4 and the pin 9, and the pinpoint gate portion 4 is in an open state. Thereafter, the cavity space 1 can be filled by flowing the resin material. Furthermore, during the period from when the resin material is filled into the cavity space 1 to when the holding pressure is applied, the hydraulic pressure is poured into the cylinder 8 in the opposite direction to that when it was retreated, and the pin is directly connected to the cylinder 8. 9 is moved forward to bring the tapered surface of the pinpoint gate portion 4 into contact with the tapered surface of the pin 9, and the secondary sp/I/
-3 and secondary runner 6 are separated.
発明の効果
以上のように本発明Ｆｉ２次ヌプμ−と２次ランナー間
にあるピンポイントゲート部の直径を大きくすることが
でき、単位時間当り大量の樹脂材料をゲート部分を通過
させることができることから、キャビティー空間への樹
脂材料の充填時間を短かくすることができる。Effects of the Invention As described above, the diameter of the pinpoint gate portion between the Fi secondary nup μ- and the secondary runner of the present invention can be increased, and a large amount of resin material can be passed through the gate portion per unit time. Therefore, the time required for filling the resin material into the cavity space can be shortened.
第１図〜第３図は本発明の一実施例におけるピンポイン
トゲート開閉金型装置を示し、第１図は全体概略構成を
示す縦断面図、第２図、第３図は動作状態の部分拡大断
面図、第４図は従来例の金型装置の要部の縦断面図であ
る。
１・・・・・・キャビティー空間、４・旧・・ピンポイ
ントゲート部、８・・・・・・シリンダ、９・旧・・ピ
ン、１０・・・・・・可動側のプレート。
ｆ−−−キ↑ビ′デｆ−空ｉ訊
９−−−ζ０ソ
１０−−一可ｌ友Ｏｕのプレト
味1 to 3 show a pinpoint gate opening/closing mold device according to an embodiment of the present invention, FIG. 1 is a vertical cross-sectional view showing the overall schematic configuration, and FIGS. 2 and 3 are parts in operation state. The enlarged cross-sectional view and FIG. 4 are vertical cross-sectional views of essential parts of a conventional mold device. 1... Cavity space, 4... Old pinpoint gate section, 8... Cylinder, 9... Old... Pin, 10... Movable side plate. f---ki↑bi'de f-skyi quen9---ζ0so10---Ikkari friend Ou's pret taste
Claims (1)
プレートに固定されたシリンダと、このシリンダにより
駆動されるピンを備え、このピンを前進・後退させるこ
とによりピンポイントゲート部を封止・開放するように
したことを特徴とするピンポイントゲート開閉金型装置
。A pinpoint gate mold device is equipped with a cylinder fixed to a movable plate and a pin driven by this cylinder, and the pinpoint gate is sealed and opened by moving this pin forward and backward. A pinpoint gate opening/closing mold device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880589A JPH02188218A (en) | 1989-01-18 | 1989-01-18 | Pinpoint gate opening and closing mold device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880589A JPH02188218A (en) | 1989-01-18 | 1989-01-18 | Pinpoint gate opening and closing mold device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02188218A true JPH02188218A (en) | 1990-07-24 |
Family
ID=11703057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP880589A Pending JPH02188218A (en) | 1989-01-18 | 1989-01-18 | Pinpoint gate opening and closing mold device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02188218A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0550464A (en) * | 1991-08-21 | 1993-03-02 | Nippondenso Co Ltd | Hot runner type injection mold |
| WO2014140986A1 (en) * | 2013-03-15 | 2014-09-18 | Sabic Innovative Plastics Ip B.V. | Shut off nozzle system and methods for making and using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62105615A (en) * | 1985-11-01 | 1987-05-16 | Matsushita Electric Ind Co Ltd | Mold device |
| JPS62275680A (en) * | 1979-11-30 | 1987-11-30 | アクゾ ナームローゼ フェンノートチャップ | Infections bronchitis virus strain of poultry |
| JPS63159783A (en) * | 1986-12-24 | 1988-07-02 | Suga Shikenki Kk | Water content measuring instrument for fallen snow particle |
-
1989
- 1989-01-18 JP JP880589A patent/JPH02188218A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62275680A (en) * | 1979-11-30 | 1987-11-30 | アクゾ ナームローゼ フェンノートチャップ | Infections bronchitis virus strain of poultry |
| JPS62105615A (en) * | 1985-11-01 | 1987-05-16 | Matsushita Electric Ind Co Ltd | Mold device |
| JPS63159783A (en) * | 1986-12-24 | 1988-07-02 | Suga Shikenki Kk | Water content measuring instrument for fallen snow particle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0550464A (en) * | 1991-08-21 | 1993-03-02 | Nippondenso Co Ltd | Hot runner type injection mold |
| WO2014140986A1 (en) * | 2013-03-15 | 2014-09-18 | Sabic Innovative Plastics Ip B.V. | Shut off nozzle system and methods for making and using the same |
| US9174372B2 (en) | 2013-03-15 | 2015-11-03 | Sabic Global Technologies B.V. | Shut off nozzle system and methods for making and using the same |
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