JPS60127112A - Air venting device of molding die - Google Patents
Air venting device of molding dieInfo
- Publication number
- JPS60127112A JPS60127112A JP23540983A JP23540983A JPS60127112A JP S60127112 A JPS60127112 A JP S60127112A JP 23540983 A JP23540983 A JP 23540983A JP 23540983 A JP23540983 A JP 23540983A JP S60127112 A JPS60127112 A JP S60127112A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air
- resin
- automatic valve
- receiving surface
- 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.)
- Granted
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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
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】
（技術分野）
本発明／ｆｉプラスチック成形全般、特にポリエステル
やエポ＋シ楠脂等の低圧注入成形に適した成形金型内の
エアを抜く技ｔｌｔＫ関する。Detailed Description of the Invention (Technical Field) The present invention relates to a technique for removing air from a mold suitable for plastic molding in general, and particularly for low-pressure injection molding of polyester, epoxy resin, etc.
（背景技術）
従来にあっては、ノックアウトピンとノックアウトピン
を押通させた孔との間に隙間を設け、ここからランナー
や＋１′７じティ内のエアを逃していた。しかしながら
このよう外方法では、熱硬化性樹脂の場合には、パリが
エア抜きの隙間に入部、離形せず硬化してエア抜きの隙
間を詰まらせ、又このためエア抜きの隙間を大きくとれ
ず、真空脱気法を併用しても大きな効果を挙げることが
できなかった。(Background Art) In the past, a gap was provided between the knockout pin and the hole into which the knockout pin was pushed, and the air in the runner and the +1'7 tee escaped from this gap. However, with this method, in the case of thermosetting resin, particles enter the air bleed gap and harden without being released from the mold, clogging the air bleed gap. Therefore, even if a vacuum degassing method was used in combination, no great effect could be achieved.
（発明の目的）
本発明は叙上の従来例の欠点に鑑みてなされたものであ
り、その目的とするところは充分にエア抜きのための隙
間をあけて完全にエアやガスを全型外へ排出でき、しか
も成形材料でエア抜きの隙間を詰まらせることのない成
形金型のエア抜き装置を提供するＫある。(Object of the invention) The present invention has been made in view of the drawbacks of the conventional examples described above, and its purpose is to completely remove air and gas from the entire mold by creating a sufficient gap for air release. To provide an air bleed device for a molding die which can be discharged to the air without clogging the air bleed gap with molding material.
（発明の開示）
本発明成形金型のエア抜き装置は、ランナーや士ｔ７じ
ティ等の樹脂流入部（りの終端部の上面にエア抜き路（
２）を形成し、エア抜き路（２）内の入口部（２ａ）に
」二下動する自動弁（３）を配設して自動弁（３）上昇
時にエア抜き路（２）が閉塞され月つ自動弁（３）下降
時にエア抜き［ｉｔ’５ｆ２１が開放されるように１７
、自動弁（３）の下面に上方へ向けて圧力を受けること
のできる受圧面（４）を形成し、受圧面（４）に働く樹
脂圧よりも弱いがエア圧よりも強いばね力にて自動弁（
３）を下方へ（ｑ勢したものであって、エア抜き路と自
動介さの間の隙間を大きくしてエアの排出を確実に行な
え、しかも樹脂圧によって自動介を閉じて樹脂洩れやパ
リ流出を完全に防止できるようにしだものである。(Disclosure of the Invention) The air bleed device for the molding die of the present invention has an air bleed passage formed on the upper surface of the terminal end of the resin inflow portion such as a runner or a runner.
2), and an automatic valve (3) that moves downward two times is disposed at the inlet (2a) of the air bleed passage (2) to prevent the air bleed passage (2) from being blocked when the automatic valve (3) rises. Automatic valve (3) Air bleed when descending [it'5f21 is opened 17
, a pressure-receiving surface (4) is formed on the lower surface of the automatic valve (3) that can receive pressure upward, and a spring force acting on the pressure-receiving surface (4) is weaker than resin pressure but stronger than air pressure. Automatic valve (
3) downward (q force), the gap between the air vent passage and the automatic gap is enlarged to ensure air evacuation, and the automatic gap is closed by resin pressure to prevent resin leakage and paris outflow. This is something that can be completely prevented.
以下、本発明の実施例を添伺図により詳述する。（５）
は」二金型、（６）は下金型であり、（１）は両金型（
５）（６）の間に形成されたランナーや士セピテイ等の
樹脂流入部であり、同上左側よりわＩ脂材料が流入する
ようになっており、右側の終端部の上方には金’Ｉ！、
（５１（６１外へエアやカスを排出するためのエア抜
き路（２）を形成しである。（３）はエア抜きｌｉ’８
（２］を開閉するだめの自動弁であり、エア抜き路（２
）の入口部（２ａ）に上下動自在に配設されており、下
面で樹脂圧又はエア圧を受け、テーバ状の肩部（７）を
エア抜き路（２）内面のテーパ状の弁座（８）に当接さ
せてエア抜き路（２）を閉塞でき、ばね（９）によって
自動弁（３）を開成方向（下方）へ付勢してあり、ばね
（９）のばね力は受圧面（４）Ｋ加わるエア圧よりも強
くてエア圧に抗してエア抜き路（２）を開成でき、且つ
受圧面（４）に加わる樹脂圧よりも弱くて樹脂圧によっ
て自動弁（３）が閉成されるような強さとしである。更
に、自動弁（３）外周とエア抜き路（２）の入口部（２
ａ）内径との間の隙間の大きさｄは樹脂が流入しにくい
程度にしてあり、受圧面（４）ｌ″ｉ自動弁（３）が閉
じたどきに樹脂流入部ｉ１内面と面一になるようにしで
ある。Hereinafter, embodiments of the present invention will be described in detail with reference to accompanying drawings. (5)
is the second mold, (6) is the lower mold, and (1) is the second mold (
5) This is a resin inflow part such as a runner or a metal sepite formed between (6), and the resin material flows in from the left side of the same as above, and the gold resin material is placed above the right end. ! ,
(51 (61) Forms an air vent path (2) for discharging air and debris outside. (3) is an air vent path (2).
(2) It is an automatic valve that opens and closes, and is an air vent passage (2).
) is arranged so as to be movable up and down at the inlet part (2a) of the valve, receives resin pressure or air pressure on the lower surface, and connects the tapered shoulder (7) to the air vent passage (2) and the tapered valve seat on the inner surface. (8) can close the air vent passage (2), and the spring (9) biases the automatic valve (3) in the opening direction (downward), and the spring force of the spring (9) is the pressure received. The surface (4) K is stronger than the applied air pressure and can open the air bleed passage (2) against the air pressure, and is weaker than the resin pressure applied to the pressure receiving surface (4) so that the automatic valve (3) is activated by the resin pressure. It is a strength that is closed. Furthermore, the outer periphery of the automatic valve (3) and the inlet part (2) of the air vent passage (2)
a) The size of the gap d between the inner diameter and the inner diameter is set to such an extent that it is difficult for the resin to flow in, so that when the pressure receiving surface (4) l''i automatic valve (3) closes, it is flush with the inner surface of the resin inflow part i1. It is as it should be.
しかして、第１１図のように通常はエア抜き路（２）は
開いているので、同」ユ左方より樹脂が流入してくると
これに押されてエア及びガスｄ：エア抜き路（２）を通
って金型ｆ５１ ＋６１外へ排出される。このとき、エ
ア抜き路（２）を真空脱気して強制的にエア及びフｊス
を引き抜いてもよい０エア及びガスが排出されて樹脂が
エア抜き路（２）の入口部（２ａ）に達すると、樹脂は
自動弁（３）外周とエア抜き路（２）内周の間の隙間に
流入し始め、同時に受圧面（４）に樹脂圧が加わるが、
流入抵抗が大きいだめに樹脂が肩部（７）と弁座（８）
との聞の隙間に達する前に自動弁（３）が」二に押され
て閉じる。従って、樹脂油４れやパリ流出は生じ々い。However, as shown in Fig. 11, the air vent passage (2) is normally open, so when resin flows in from the left side of the unit, it is pushed by the air and gas d: the air vent passage (2). 2) and is discharged to the outside of the mold f51 +61. At this time, the air and gas may be forcibly pulled out by vacuum deaerating the air vent passage (2). Air and gas are discharged and the resin flows to the entrance part (2a) of the air vent passage (2). When the pressure reaches , the resin begins to flow into the gap between the outer periphery of the automatic valve (3) and the inner periphery of the air vent passage (2), and at the same time, resin pressure is applied to the pressure receiving surface (4).
Due to the large inflow resistance, the resin is applied to the shoulder (7) and valve seat (8).
Before reaching the gap between the two, the automatic valve (3) is pushed twice and closed. Therefore, resin oil leakage and leakage are unlikely to occur.
尚、成形品の脱型時（ではエア抜き路（２）の１１１０
（２＋） ）よりエアを逆に吹き込めば容易に脱型され
る。In addition, when demolding the molded product (1110 of the air bleed passage (2)
(2+)) If air is blown in the opposite direction, the mold can be easily demolded.
（発明の効果）
未発り］は叙述の如く構成されているから、）５ス抜き
路を充分に広くして樹脂流入部内のエア及び１５スを確
実に排出でき、成形品のむらがなくなって外観、〉に沢
等の品質が向上する。更に、ガス及びエアが速やかに排
出されるので樹脂の注入時間が短縮され、ボス、りづ、
厚肉部等の密閉される局部の充填も完全に行なえるとい
う利点がある。(Effects of the Invention) Since the ``non-emission'' is constructed as described above, the ``5'' removal path is made sufficiently wide to ensure that the air and 15'' in the resin inflow section are discharged, and the molded product becomes even. The quality of appearance, 〉nizawa, etc. will be improved. Furthermore, since gas and air are quickly discharged, resin injection time is shortened and bosses, edges,
It has the advantage of being able to completely fill sealed local areas such as thick-walled areas.
しかも、樹脂の圧力によって自動弁が自動的に閉じられ
るので、エア抜き路からの材料洩れやパリ流出もないと
いう利点がある。Furthermore, since the automatic valve is automatically closed by the pressure of the resin, there is an advantage that there is no leakage of material from the air vent passage or outflow of particles.
第１図は本発明の一実施例を示す白１１の弁開成時の断
面図、第２図は同上の自■ジノＪ「閉成、時の断面図で
ある。
（１）・・・樹脂流入部、（２）・・・エア抜き路、（
２ａ）・・・入口部、（３）・・・自動弁、（４）・・
・受圧面。
代理人 弁理士 石 １）長 七Fig. 1 is a cross-sectional view of the valve of White 11 showing an embodiment of the present invention when the valve is open, and Fig. 2 is a cross-sectional view of the valve when the valve is closed. (1) Resin Inflow section, (2)... air vent path, (
2a)...Inlet part, (3)...Automatic valve, (4)...
・Pressure receiving surface. Agent Patent Attorney Ishi 1) Choshichi
Claims (1)
上面にエア抜き路を形成し、エア抜き路内の入口部に上
下動する自動弁を配設して自動弁上昇時にエア抜き路が
閉塞され且つ自動弁下降時にエア抜き路が開放されるよ
うにし、自動弁の下面に上方へ向けて圧力を受けること
のできる受圧面を形成し、受圧面に働く樹脂圧よりも弱
いがエア圧よりも強いばね力にて自動弁を下方へ付勢し
て成ることを特徴とする成形金型のエア抜き装置。An air bleed passage is formed on the upper surface of the terminal end of the resin inlet such as +11 Lasiner or Shisejiti, and an automatic valve that moves up and down is placed at the entrance of the air bleed passage to close the air bleed passage when the automatic valve rises. is closed and the air bleed passage is opened when the automatic valve descends, and a pressure-receiving surface that can receive upward pressure is formed on the lower surface of the automatic valve. An air bleed device for a molding die, characterized in that an automatic valve is biased downward by a spring force stronger than pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23540983A JPS60127112A (en) | 1983-12-14 | 1983-12-14 | Air venting device of molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23540983A JPS60127112A (en) | 1983-12-14 | 1983-12-14 | Air venting device of molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60127112A true JPS60127112A (en) | 1985-07-06 |
| JPH0447606B2 JPH0447606B2 (en) | 1992-08-04 |
Family
ID=16985662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23540983A Granted JPS60127112A (en) | 1983-12-14 | 1983-12-14 | Air venting device of molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60127112A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5052907A (en) * | 1989-07-04 | 1991-10-01 | Kabushiki Kaisha Toshiba | Resin sealing apparatus for use in manufacturing a resin-sealed semiconductor device |
| US5082615A (en) * | 1987-12-18 | 1992-01-21 | Mitsubishi Denki Kabushiki Kaisha | Method for packaging semiconductor devices in a resin |
| US5151279A (en) * | 1988-11-02 | 1992-09-29 | Hiroshi Kimura | Method for making resin dental plates and flasks |
| JP2005324552A (en) * | 2004-05-12 | 2005-11-24 | Woodbridge Foam Corp | Mold with exhaust hole and method for molding molded component |
| KR100556193B1 (en) * | 2005-06-24 | 2006-03-03 | 태화물산 주식회사 | Metal mold for forming pavement blocks with air vent |
| EP1782935A1 (en) * | 2005-11-02 | 2007-05-09 | Kabushiki Kaisha Toshiba | Metal mold for resin molding |
| US20090095406A1 (en) * | 2004-12-28 | 2009-04-16 | Stefano Cazzanti | Method and Apparatus for Manufacturing Tyres for Vehicle Wheels |
| JP2009250052A (en) * | 2008-04-02 | 2009-10-29 | Nippon Thermostat Co Ltd | Fluid discharge structure for fluid control device |
| EP2149445A1 (en) * | 2008-01-28 | 2010-02-03 | Kabushiki Kaisha Saito Kanagata Seisakusho | In-mold degassing structure, and mold having the structure |
| JP2010208296A (en) * | 2009-03-12 | 2010-09-24 | Toshiba Corp | Resin casting die |
| EP2412504A2 (en) * | 2010-07-30 | 2012-02-01 | Kabushiki Kaisha Toshiba | Casting mold and gas insulated switchgear |
| CN102490290A (en) * | 2011-11-30 | 2012-06-13 | 中山市利群精密实业有限公司 | Air exhaust mechanism for plastic cement mould |
| CN102615762A (en) * | 2012-04-19 | 2012-08-01 | 湖北航天化学技术研究所 | Rubber molded product mould |
| KR101303314B1 (en) * | 2006-11-27 | 2013-09-03 | 한미반도체 주식회사 | A Molding Device for semiconductor package |
| WO2013140580A1 (en) * | 2012-03-22 | 2013-09-26 | 株式会社斎藤金型製作所 | Gas-releasing structure in die and die provided with said structure |
| CN109093091A (en) * | 2018-05-14 | 2018-12-28 | 日本模具贸易株式会社 | The trouble-saving device of die casting open and close valve |
| CN109648799A (en) * | 2019-01-29 | 2019-04-19 | 深圳市金彩虹精密制造股份有限公司 | Excessive injection molding means for correcting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477438U (en) * | 1971-02-20 | 1972-09-27 | ||
| JPS5425419U (en) * | 1977-07-25 | 1979-02-19 | ||
| JPS5425418U (en) * | 1977-07-21 | 1979-02-19 | ||
| JPS55174316U (en) * | 1979-06-02 | 1980-12-13 | ||
| JPS57212040A (en) * | 1981-06-25 | 1982-12-27 | Ube Ind Ltd | Degassing device for mold in molding machine |
| JPS58128256A (en) * | 1982-01-26 | 1983-07-30 | Ube Ind Ltd | Method and device for discriminating defectiveness and non-defectiveness of injection molded product in injection molding machine |
-
1983
- 1983-12-14 JP JP23540983A patent/JPS60127112A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS477438U (en) * | 1971-02-20 | 1972-09-27 | ||
| JPS5425418U (en) * | 1977-07-21 | 1979-02-19 | ||
| JPS5425419U (en) * | 1977-07-25 | 1979-02-19 | ||
| JPS55174316U (en) * | 1979-06-02 | 1980-12-13 | ||
| JPS57212040A (en) * | 1981-06-25 | 1982-12-27 | Ube Ind Ltd | Degassing device for mold in molding machine |
| JPS58128256A (en) * | 1982-01-26 | 1983-07-30 | Ube Ind Ltd | Method and device for discriminating defectiveness and non-defectiveness of injection molded product in injection molding machine |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5082615A (en) * | 1987-12-18 | 1992-01-21 | Mitsubishi Denki Kabushiki Kaisha | Method for packaging semiconductor devices in a resin |
| US5151279A (en) * | 1988-11-02 | 1992-09-29 | Hiroshi Kimura | Method for making resin dental plates and flasks |
| US5052907A (en) * | 1989-07-04 | 1991-10-01 | Kabushiki Kaisha Toshiba | Resin sealing apparatus for use in manufacturing a resin-sealed semiconductor device |
| CN102490291A (en) * | 2004-05-12 | 2012-06-13 | 普罗普里特公司 | Vented mold and method for producing molded article |
| JP2005324552A (en) * | 2004-05-12 | 2005-11-24 | Woodbridge Foam Corp | Mold with exhaust hole and method for molding molded component |
| US9669569B2 (en) | 2004-05-12 | 2017-06-06 | Proprietect L.P. | Vented mold and method for producing molded article |
| US8850644B2 (en) | 2004-05-12 | 2014-10-07 | Proprietect L.P. | Molded article produced by vented mold |
| US20090095406A1 (en) * | 2004-12-28 | 2009-04-16 | Stefano Cazzanti | Method and Apparatus for Manufacturing Tyres for Vehicle Wheels |
| US9604421B2 (en) | 2004-12-28 | 2017-03-28 | Pirelli Tyre S.P.A. | Apparatus for manufacturing tyres for vehicle wheels |
| US8882947B2 (en) * | 2004-12-28 | 2014-11-11 | Pirelli Tyre S.P.A. | Method and apparatus for manufacturing tyres for vehicle wheels |
| KR100556193B1 (en) * | 2005-06-24 | 2006-03-03 | 태화물산 주식회사 | Metal mold for forming pavement blocks with air vent |
| EP1782935A1 (en) * | 2005-11-02 | 2007-05-09 | Kabushiki Kaisha Toshiba | Metal mold for resin molding |
| KR101303314B1 (en) * | 2006-11-27 | 2013-09-03 | 한미반도체 주식회사 | A Molding Device for semiconductor package |
| KR101025716B1 (en) | 2008-01-28 | 2011-03-30 | 가부시키가이샤 사이토 가나가타 세이사쿠쇼 | In-mold degassing structure, and mold having the structure |
| US7833003B2 (en) * | 2008-01-28 | 2010-11-16 | Kabushiki Kaisha Saito Kanagata Seisakusho | In-mold degassing structure and mold having the structure |
| EP2149445A1 (en) * | 2008-01-28 | 2010-02-03 | Kabushiki Kaisha Saito Kanagata Seisakusho | In-mold degassing structure, and mold having the structure |
| EP2149445A4 (en) * | 2008-01-28 | 2010-06-09 | Saito Kanagata Seisakusho Kk | In-mold degassing structure, and mold having the structure |
| JP2009250052A (en) * | 2008-04-02 | 2009-10-29 | Nippon Thermostat Co Ltd | Fluid discharge structure for fluid control device |
| JP2010208296A (en) * | 2009-03-12 | 2010-09-24 | Toshiba Corp | Resin casting die |
| JP2012030536A (en) * | 2010-07-30 | 2012-02-16 | Toshiba Corp | Casting mold and gas-insulated switchgear |
| EP2412504A2 (en) * | 2010-07-30 | 2012-02-01 | Kabushiki Kaisha Toshiba | Casting mold and gas insulated switchgear |
| CN102490290A (en) * | 2011-11-30 | 2012-06-13 | 中山市利群精密实业有限公司 | Air exhaust mechanism for plastic cement mould |
| JP5509477B2 (en) * | 2012-03-22 | 2014-06-04 | ケンモールドサービス株式会社 | Gas release structure in mold and mold having the structure |
| WO2013140580A1 (en) * | 2012-03-22 | 2013-09-26 | 株式会社斎藤金型製作所 | Gas-releasing structure in die and die provided with said structure |
| CN102615762A (en) * | 2012-04-19 | 2012-08-01 | 湖北航天化学技术研究所 | Rubber molded product mould |
| CN109093091A (en) * | 2018-05-14 | 2018-12-28 | 日本模具贸易株式会社 | The trouble-saving device of die casting open and close valve |
| CN109648799A (en) * | 2019-01-29 | 2019-04-19 | 深圳市金彩虹精密制造股份有限公司 | Excessive injection molding means for correcting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0447606B2 (en) | 1992-08-04 |
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