JP2001105458A - Resin injection device for injection molding machine having many valve pins operated by one piston - Google Patents
Resin injection device for injection molding machine having many valve pins operated by one pistonInfo
- Publication number
- JP2001105458A JP2001105458A JP29072099A JP29072099A JP2001105458A JP 2001105458 A JP2001105458 A JP 2001105458A JP 29072099 A JP29072099 A JP 29072099A JP 29072099 A JP29072099 A JP 29072099A JP 2001105458 A JP2001105458 A JP 2001105458A
- Authority
- JP
- Japan
- Prior art keywords
- injection
- piston
- resin
- manifold
- cylinder
- 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
- 239000007924 injection Substances 0.000 title claims abstract description 113
- 238000002347 injection Methods 0.000 title claims abstract description 113
- 229920005989 resin Polymers 0.000 title claims abstract description 49
- 239000011347 resin Substances 0.000 title claims abstract description 49
- 238000001746 injection moulding Methods 0.000 title claims description 13
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000000465 moulding Methods 0.000 abstract description 8
- 239000000243 solution Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 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
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
-
- 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
- B29C45/2737—Heating or cooling means therefor
- B29C2045/274—Thermocouples or heat sensors
-
- 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
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
- B29C2045/2813—Common drive means for several needle valves
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、合成樹脂製品を製
造する射出成形機の樹脂注入装置に関するもので、特
に、金型のキャビティに合成樹脂を注入する注入ノズル
の注入口を開閉するバルブシステムにおいて、注入口を
開閉する多数のバルブピンが一つのピストンの作動によ
り作動されるようにして、注入ノズルと注入ノズルとの
間隔を最小化して、従来のバルブシステムを使用し得な
い小型製品にバルブシステムを適用し得るようにし、バ
ルブシステムの構造を簡単にして、組立の簡素化及び原
価の節減を達成し得るようにした、一つのピストンで多
数のバルブピンを作動する射出成形機の樹脂注入装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin injection device of an injection molding machine for producing a synthetic resin product, and more particularly to a valve system for opening and closing an injection port of an injection nozzle for injecting a synthetic resin into a mold cavity. In the above, a large number of valve pins for opening and closing the injection port are operated by the operation of one piston to minimize the distance between the injection nozzles and the valve to a small product which cannot use the conventional valve system. A resin injection device for an injection molding machine that operates a number of valve pins with one piston so that the system can be applied, the structure of the valve system can be simplified, and assembly can be simplified and cost can be reduced. It is about.
【０００２】[0002]
【従来の技術】一般に、合成樹脂製品を成形する射出成
形機は、樹脂原料を別のシリンダ装置でマニホルドに注
入させると、前記マニホルドが、下部に結合された注入
ノズルに樹脂を分配して金型の製品成形空間であるキャ
ビティに注入し、キャビティの樹脂が充填され注入が完
了されると、金型が開放され、成形された製品が取り出
される。2. Description of the Related Art Generally, in an injection molding machine for molding a synthetic resin product, when a resin material is injected into a manifold by another cylinder device, the manifold distributes the resin to an injection nozzle connected to a lower portion, and the metal is dispensed. The mold is injected into a cavity, which is a product molding space. When the resin in the cavity is filled and the injection is completed, the mold is opened and the molded product is taken out.
【０００３】この際に、前記注入ノズルは、樹脂が溶融
状態を維持しなければならないので、高温の状態であ
り、金型は、樹脂が固化する低温状態であるため、製品
を取り出すとき、注入ノズルの注入口には全く固化しな
かった樹脂が引き出される現象が発生して、糸のように
細いスプルーが発生するため、製品の取出後、これを除
去する別の作業を行う不便が発生する。前記不便を解消
するための、注入ノズルの上部に、油圧（又は空圧）に
より乗降するピストンを有するシリンダを設け、ピスト
ンの下部にはバルブピンを注入ノズルに挿入し得るよう
に結合することにより、ピストンの乗降作動により注入
ノズルの注入口を開閉するようにするバルブシステムが
開発された。[0003] At this time, the injection nozzle is in a high temperature state because the resin must maintain a molten state, and the mold is in a low temperature state in which the resin is solidified. A phenomenon occurs in which the resin that has not solidified at all is drawn out at the nozzle inlet, and a sprue as thin as a thread occurs.Therefore, after taking out the product, it is inconvenient to perform another operation to remove the sprue. . In order to eliminate the inconvenience, by providing a cylinder having a piston that gets on and off by hydraulic pressure (or pneumatic pressure) at the upper part of the injection nozzle and connecting a valve pin at the lower part of the injection nozzle so that it can be inserted into the injection nozzle, A valve system has been developed that opens and closes the injection port of the injection nozzle by moving the piston on and off.
【０００４】したがって、金型のキャビティに樹脂を注
入するときは、シリンダに圧力が下部から作用してピス
トンを上昇させることにより、バルブピンの下端が注入
ノズルの注入口を開放し、キャビティに樹脂が充填され
て樹脂の注入が完了されると、シリンダの圧力が上部か
ら作用してピストンを下降させることにより、バルブピ
ンが注入ノズルの注入口を閉鎖して、それ以上の樹脂
が、製品の取出時、引き出されないようにした。Therefore, when injecting resin into the cavity of the mold, pressure acts on the cylinder from below to raise the piston, so that the lower end of the valve pin opens the injection port of the injection nozzle and the resin is injected into the cavity. When the filling and resin injection are completed, the cylinder pressure acts from the top and lowers the piston, so that the valve pin closes the injection nozzle injection port. , Not to be pulled out.
【０００５】しかし、このようなバルブシステムは、注
入ノズルとピストンを有するシリンダとが１組で装着さ
れるため、小型製品を成形する場合、一つの金型で多数
の製品を成形して生産性を高めるためには、注入孔を多
数形成し、この注入孔を開閉するためには、注入孔数と
同数のピストンを有するシリンダが必要であり、更に、
各注入ノズルごとに樹脂の流動性を高めるためのヒータ
ーと、該ヒーターの温度を制御するための温度感知装置
である熱電対とが必要であり、このように、シリンダと
注入ノズルに結合されたヒーター及び熱電対により大き
い空間を占めるため、注入孔の間隔が大きくなり、これ
により、一つの金型に多数の製品を成形し得なくて生産
性が低下する。このような生産性の低下を防止するた
め、注入孔の間隔を小さくした場合は、ピストンとシリ
ンダの大きさ及びヒーターの大きさも小さくすべきであ
るが、シリンダを小さくする場合は、注入ノズルに結合
されたバルブピンを上下に動作させるピストンを稼動さ
せる力が足りなくて、シリンダの動作が不可能であり、
ヒーターが十分に加熱されなくて樹脂の流動性が確保さ
れなく、シリンダ及び注入ノズルを小さくするには限界
性を有するため、小型製品を多数成形するための金型に
はバルブシステムを適用するのに限界性を有し、金型が
無駄に大きくなる欠点が発生し、大型の射出成形を実施
すべきであるなどの問題点が発生した。However, in such a valve system, since the injection nozzle and the cylinder having the piston are mounted as one set, when molding a small product, a large number of products are molded with one mold to improve the productivity. In order to increase the number of injection holes, a large number of injection holes are formed, and in order to open and close the injection holes, a cylinder having the same number of pistons as the number of injection holes is required.
For each injection nozzle, a heater for increasing the fluidity of the resin and a thermocouple as a temperature sensing device for controlling the temperature of the heater are required, and thus, the cylinder is connected to the injection nozzle. Since the heater and the thermocouple occupy a larger space, the space between the injection holes is increased, thereby reducing the productivity because a large number of products cannot be formed in one mold. In order to prevent such a decrease in productivity, when the interval between the injection holes is reduced, the size of the piston and the cylinder and the size of the heater should also be reduced. Insufficient force to operate the piston that moves the combined valve pin up and down, cylinder operation is not possible,
Since the heater is not heated sufficiently and the fluidity of the resin is not ensured, and there is a limit to reducing the size of the cylinder and injection nozzle, a valve system is applied to the mold for molding many small products. However, there is a disadvantage that the mold is uselessly large, and a large injection molding should be performed.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、前記のよう
な従来のバルブシステムの問題点を解消するためになさ
れたものであり、注入口を開閉する多数のバルブピンを
一つのピストンで作動させて、注入ノズルの間隔を最小
化して、小型製品にバルブシステムを適用し得るように
し、バルブシステムの構造を簡単にして、組立の簡素化
及び原価の節減を達成し得るようにした、一つのピスト
ンで多数のバルブピンを作動する射出成形機の樹脂注入
装置を提供することにその目的がある。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the conventional valve system, in which a plurality of valve pins for opening and closing an inlet are operated by one piston. In order to minimize the distance between the injection nozzles, the valve system can be applied to small products, the structure of the valve system can be simplified, and the assembly can be simplified and the cost can be reduced. It is an object of the present invention to provide a resin injection device for an injection molding machine that operates a number of valve pins with a piston.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、金型の上固定板の内部には、マニホルド
の樹脂ホールに連結されるよう、内部に樹脂ホールが放
射状に形成されたマニホルドを設け、前記マニホルドの
上部外側にはシリンダのピストンを乗降可能に結合し、
前記ピストンには、マニホルドの下部周辺に結合される
注入ノズルの数と同数のバルブピンが結合して、一つの
シリンダにおいて、ピストンが上下に乗降すると、多数
の注入ノズルの注入孔がバルブピンにより開閉されるよ
うにすることにより、注入孔と注入孔との間隔を最小化
するとともに注入ノズルの大きさも成形しょうとする製
品の大きさに応じて最小化して、一つの金型に製品成形
空間であるキャビティをできるだけ多く形成して生産性
を高め、マニホルドに一つのヒーター及び熱電対を設置
して、温度制御のための最少のコントローラでヒーター
の温度を容易に制御し、構造を単純にして組立工数及び
原価の節減を図り得る、一つのピストンで多数のバルブ
ピンを作動する射出成形機の樹脂注入装置を提供する。In order to achieve the above-mentioned object, the present invention is directed to a method for manufacturing a semiconductor device, comprising: a resin hole formed radially inside an upper fixing plate of a mold so as to be connected to a resin hole of a manifold. A manifold is provided, and a piston of a cylinder is coupled to the upper outside of the manifold so as to be able to get on and off,
The piston has the same number of valve pins as the number of injection nozzles connected to the lower periphery of the manifold. By minimizing the distance between the injection holes and the injection hole, the size of the injection nozzle is minimized according to the size of the product to be molded. Form as many cavities as possible to increase productivity, install one heater and thermocouple in the manifold, easily control the temperature of the heater with the minimum controller for temperature control, simplify the structure and reduce the number of assembly steps Provided is a resin injection device for an injection molding machine that can operate a large number of valve pins with one piston, which can reduce the cost.
【０００８】[0008]
【発明の実施の形態】以下、本発明の構成及び作用を添
付図面に基づいて詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and operation of the present invention will be described below in detail with reference to the accompanying drawings.
【０００９】添付図面において、図１は本発明の実施の
一形態の構成を示す断面図であり、図２は上記実施形態
の作動状態を示す断面図であり、図３は本発明の他の実
施の形態を示す断面図であり、図４は本発明のさらに他
の実施の形態を示す断面図である。In the accompanying drawings, FIG. 1 is a sectional view showing a configuration of an embodiment of the present invention, FIG. 2 is a sectional view showing an operation state of the above embodiment, and FIG. 3 is another embodiment of the present invention. FIG. 4 is a sectional view showing an embodiment, and FIG. 4 is a sectional view showing still another embodiment of the present invention.
【００１０】まず、本発明の実施の一形態の構成を図１
を参照して説明する。金型１の上固定板２には、樹脂を
分配するマニホルド（上マニホルド）３が設けられ、上
固定板２の下部に設けられた上円板２ａには注入ノズル
４が設けられ、注入ノズル４の上部にはピストン８を有
するシリンダ７が設けられ、注入ノズル４の注入孔５は
バルブピン９により開閉され、上円板２ａの下部に設け
られた下円板２ｂにはキャビティ６が形成され、樹脂が
キャビティ６に注入されるとき、ピストン８が上昇し
て、バルブピン９が注入ノズル４の注入孔５を開放し、
キャビティ６に樹脂が充填されると、ピストン８が下降
して、注入ノズル４の注入孔５を閉鎖する。First, the configuration of an embodiment of the present invention is shown in FIG.
This will be described with reference to FIG. An upper fixed plate 2 of the mold 1 is provided with a manifold (upper manifold) 3 for distributing resin, and an upper disk 2 a provided below the upper fixed plate 2 is provided with an injection nozzle 4. A cylinder 7 having a piston 8 is provided at an upper part of the cylinder 4, and an injection hole 5 of the injection nozzle 4 is opened and closed by a valve pin 9, and a cavity 6 is formed in a lower disk 2b provided below the upper disk 2a. When the resin is injected into the cavity 6, the piston 8 rises and the valve pin 9 opens the injection hole 5 of the injection nozzle 4,
When the cavity 6 is filled with the resin, the piston 8 descends and closes the injection hole 5 of the injection nozzle 4.
【００１１】更に、本実施形態は、前記上円板２ａにマ
ニホルド３の樹脂ホールに連結される樹脂ホール１０が
放射状に形成され、内部中央にはヒーター１１及び温度
感知器である熱電対１２が設けられ、下部周辺に注入ノ
ズル４が挿入される多数の挿入孔１４が形成され、前記
挿入孔１４を貫通してバルブピン９が結合される結合孔
１５が形成されたマニホルド（下マニホルド）１３と、
前記マニホルド１３の上部外面に、ピストン８が油圧又
は空圧などの圧力を発生する圧力孔１７ａ、１７ｂによ
り案内板１６の案内にしたがって乗降するように結合さ
れ、ピストン８の下部には、マニホルド１３の結合孔１
５に結合され、注入ノズル４の注入孔５を開閉するバル
ブピン９が多数結合されたシリンダ７とを含む。Further, in this embodiment, a resin hole 10 connected to the resin hole of the manifold 3 is formed radially in the upper disk 2a, and a heater 11 and a thermocouple 12 as a temperature sensor are formed in the center of the inside. A manifold (lower manifold) 13 formed with a plurality of insertion holes 14 formed around the lower portion, into which the injection nozzle 4 is inserted, and formed with a coupling hole 15 through which the valve pin 9 is coupled. ,
The piston 8 is coupled to the upper outer surface of the manifold 13 by pressure holes 17a and 17b for generating pressure such as hydraulic pressure or pneumatic pressure so as to get on and off according to the guide of the guide plate 16. Binding hole 1
5 and a cylinder 7 to which a number of valve pins 9 for opening and closing the injection hole 5 of the injection nozzle 4 are connected.
【００１２】そして、本発明の他の実施の形態は、注入
ノズル４と注入ノズル４との間隔が最小距離に近接する
と、マニホルド１３の内部中央にヒーター１１及び熱電
対１２を形成することができないので、図３に示すよう
に、マニホルド１３の下部外側に注入ノズル４を挿入す
るために形成された挿入孔１４の外側にヒーター１１及
び熱電対１２を設けて、樹脂の流動性を確保するもので
ある。In another embodiment of the present invention, if the distance between the injection nozzles 4 is close to the minimum distance, the heater 11 and the thermocouple 12 cannot be formed in the center of the inside of the manifold 13. Therefore, as shown in FIG. 3, the heater 11 and the thermocouple 12 are provided outside the insertion hole 14 formed for inserting the injection nozzle 4 outside the lower part of the manifold 13 to secure the fluidity of the resin. It is.
【００１３】また、本発明のさらに他の実施の形態は、
図４に示すように、上固定板２の上下部に第１マニホル
ド（第１上マニホルド）３ａ及び第２マニホルド（第２
上マニホルド）３ｂを設け、前記マニホルド３ａ、３ｂ
の間には、ピストン８を有するシリンダ７を備える固定
部１８を結合し、前記シリンダ７のピストン８の中央に
は、樹脂ホール１０を有し外部にヒーター１１及び熱電
対１２を有する連結部１９を設け、前記固定部１８の下
部には、ピストン８の下部が結合され、上円板２ａに設
けられた多数の注入ノズル４の注入孔５を開閉するバル
ブピン９が多数結合された作動バー２０を設けることに
より、シリンダ７のピストン８が乗降することにより作
動バー２０が乗降して、バルブピン９が注入ノズル４の
注入孔５を開閉するようにするものである。[0013] Further, still another embodiment of the present invention provides:
As shown in FIG. 4, a first manifold (first upper manifold) 3a and a second manifold (second
An upper manifold 3b is provided, and the manifolds 3a, 3b are provided.
A connecting portion 19 having a resin hole 10 in the center of the piston 8 of the cylinder 7 and having a heater 11 and a thermocouple 12 on the outside is connected between the fixing portion 18 having the cylinder 7 having the piston 8. A lower portion of the fixed portion 18 is coupled to a lower portion of the piston 8, and an operating bar 20 to which a plurality of valve pins 9 for opening and closing the injection holes 5 of the multiple injection nozzles 4 provided on the upper disk 2 a are connected. Is provided so that the operating bar 20 moves up and down as the piston 8 of the cylinder 7 moves up and down, so that the valve pin 9 opens and closes the injection hole 5 of the injection nozzle 4.
【００１４】ここで、未説明符号２１はバルブピン９を
案内するピンガイドブッシュであり、２２は、ピストン
８の上下作動時、気密を維持するＯ−リングである。Here, reference numeral 21 denotes a pin guide bush for guiding the valve pin 9, and reference numeral 22 denotes an O-ring for maintaining airtightness when the piston 8 moves up and down.
【００１５】このように構成される本発明の作用を図２
を参照して説明すると次のようである。The operation of the present invention thus configured is shown in FIG.
The following is a description with reference to FIG.
【００１６】図示しなかったシリンダ装置により、製品
の原料である樹脂が投入され、シリンダ装置内部のスク
リューの回転力により、樹脂が金型１の上固定板２に結
合されたマニホルド３に分配され、前記マニホルド３に
分配された樹脂は、マニホルド３の下部に設けられ金型
１の上円板２ａに結合された注入ノズル４を通じて、下
円板２ｂに形成されたキャビティ６に流入される。樹脂
が注入ノズル４を通過してキャビティ６に注入されると
きは、注入ノズル４の注入孔５が開放されなければなら
ないので、図２に示すように、注入ノズル４の上部に設
けられたシリンダ７の下部圧力部１７ｂで油圧又は空圧
などの圧力が作用してピストン８を上昇させると、ピス
トン８の下部に多数結合されたバルブピン９が上昇し
て、各バルブピン９が結合された多数の注入ノズル４の
注入孔５を同時に開放する。キャビティ６に樹脂が充填
されて注入が完了されると、上部圧力部１７ａから圧力
が発生して、シリンダ７の内部に作用された以前の圧力
が下部圧力部１７ｂに排出されると、ピストン８を下降
し、図１に示すように、このピストン８の下降によりバ
ルブピン９が下降して注入ノズル４の注入孔５を閉鎖す
ることにより、それ以上の樹脂がキャビティ６に注入さ
れることを防止し、樹脂がキャビティ６で冷却されて製
品に成形され、製品の成形が完了されると、金型１の下
円板２ｂが開放され、製品が取り出される。A resin, which is a raw material of the product, is charged by a cylinder device (not shown), and the resin is distributed to a manifold 3 coupled to an upper fixing plate 2 of a mold 1 by a rotating force of a screw inside the cylinder device. The resin distributed to the manifold 3 flows into the cavity 6 formed in the lower disk 2b through the injection nozzle 4 provided below the manifold 3 and connected to the upper disk 2a of the mold 1. When the resin is injected into the cavity 6 through the injection nozzle 4, the injection hole 5 of the injection nozzle 4 must be opened. Therefore, as shown in FIG. When the pressure such as hydraulic pressure or pneumatic pressure acts on the lower pressure portion 17b of the piston 7 to raise the piston 8, a large number of valve pins 9 connected to the lower portion of the piston 8 are raised, and a large number of valve pins 9 connected to each other are raised. The injection hole 5 of the injection nozzle 4 is simultaneously opened. When the cavity 6 is filled with the resin and injection is completed, pressure is generated from the upper pressure portion 17a, and when the previous pressure applied to the inside of the cylinder 7 is discharged to the lower pressure portion 17b, the piston 8 As shown in FIG. 1, the lowering of the piston 8 lowers the valve pin 9 to close the injection hole 5 of the injection nozzle 4, thereby preventing further resin from being injected into the cavity 6. Then, the resin is cooled in the cavity 6 and molded into a product. When the molding of the product is completed, the lower disk 2b of the mold 1 is opened and the product is taken out.
【００１７】この際に、前記注入ノズル４は、製品の形
態に応じて、多数が設けられ、この注入ノズル４の内部
に挿入されたバルブピン９が同時に作動するものであ
る。小型製品を成形する場合は、キャビティ６の大きさ
が小さいため、生産性を高めるためにキャビティ６とキ
ャビティ６との間隔を最小化して、一つの金型１に多数
のキャビティ６を形成し、一つのシリンダ７のピストン
８が多数のバルブピン９を作動し得るので、シリンダ７
の大きさに制限されなく、キャビティ６とキャビティ６
との間隔を最小にし得るものであり、製品が小型である
場合、注入ノズル４の大きさが小型でなければならない
ため、バルブピン９の太さも細くなるが、前記バルブピ
ン９を作動させるピストン８は、多数のバルブピン９が
結合されることにより、小さくなる必要がないので、バ
ルブピン９を作動させるための十分な力を有するもので
あり、前記注入ノズル４はピストン８の中央に結合され
たマニホルド１３に結合され、前記マニホルド１３には
一つのヒーター１１及び熱電対１２が設けられているの
で、樹脂の流動性を有するための温度を制御するコント
ローラが最少に備えられるものである。At this time, a large number of the injection nozzles 4 are provided according to the form of the product, and the valve pins 9 inserted into the injection nozzles 4 are simultaneously operated. When molding a small product, since the size of the cavity 6 is small, the interval between the cavities 6 is minimized in order to increase the productivity, and a large number of cavities 6 are formed in one mold 1. Since the piston 8 of one cylinder 7 can operate many valve pins 9, the cylinder 7
The cavity 6 and the cavity 6 are not limited to the size of
When the product is small, the size of the injection nozzle 4 must be small, so the thickness of the valve pin 9 is also small. However, the piston 8 for operating the valve pin 9 is Since the large number of valve pins 9 need not be reduced by being connected, the injection nozzle 4 has a sufficient force to operate the valve pins 9 and the injection nozzle 4 is connected to the manifold 13 connected to the center of the piston 8. Since the manifold 13 is provided with a single heater 11 and a thermocouple 12, a controller for controlling the temperature for providing the resin with fluidity is provided at a minimum.
【００１８】そして、本発明の他の実施の形態において
は、図３に示すように、射出品の大きさが小型である
と、注入ノズル４と注入ノズル４との間に空間が発生
し、これを解消するために注入ノズル４と注入ノズル４
との間隔を小さくすると、マニホルド１３の中央に樹脂
の流動性を確保するためのヒーター１１と熱電対１２を
備える空間がなくなるが、樹脂の流動性を確保するた
め、ヒーター１１及び熱電対１２を、マニホルド１３の
下部に注入ノズル４を結合するための挿入孔１４の外側
に備えるものである。In another embodiment of the present invention, as shown in FIG. 3, if the size of the injection product is small, a space is generated between the injection nozzles 4 and 4. In order to solve this, injection nozzle 4 and injection nozzle 4
When the distance between the heater 11 and the thermocouple 12 is reduced, the space provided with the heater 11 and the thermocouple 12 for securing the fluidity of the resin is eliminated in the center of the manifold 13, but the heater 11 and the thermocouple 12 are secured for securing the fluidity of the resin. , Provided outside the insertion hole 14 for coupling the injection nozzle 4 to the lower part of the manifold 13.
【００１９】また、本発明のさらに他の実施の形態は、
図４に示すように、バルブピン９がシリンダ７のピスト
ン８に直接連結されなく、ピストン８の下部に作動バー
２０を結合し、前記作動バー２０の底面には多数のバル
ブピン９を結合して、ピストン８の作動によりバルブピ
ン９が乗降作動するようにしたもので、作動バー２０に
は多数のシリンダ７を連結して使用し得るものである。Further, still another embodiment of the present invention relates to:
As shown in FIG. 4, the valve pin 9 is not directly connected to the piston 8 of the cylinder 7, but an operating bar 20 is connected to a lower portion of the piston 8, and a number of valve pins 9 are connected to a bottom surface of the operating bar 20. The operation of the piston 8 causes the valve pin 9 to move up and down. The operation bar 20 can be used by connecting a large number of cylinders 7.
【００２０】[0020]
【発明の効果】以上説明したように、本発明は、射出成
形機のバルブシステムにおいて、注入ノズルの上部に、
個別に注入ノズルの注入口を開閉するシリンダ装置を備
えなく、一つのシリンダ装置の多数の注入ノズルの注入
口を開閉し得るよう、シリンダのピストンの下部に、各
々の注入ノズルに挿入され注入口を開閉するバルブピン
を結合して、ピストンの乗降作用により多数の注入ノズ
ルの注入口が開閉されるようにし、シリンダを注入ノズ
ルに個別に設置しないので、構造が簡単で価格が低廉で
あり、注入ノズルを最小化しても、注入ノズルの注入口
を開閉させるバルブピンを作動するシリンダの大きさが
注入ノズルの大きさに応じて小さくならなくてもよいの
で、小型製品を成形する場合、バルブシステムの適用が
可能であり、特に、小型製品を成形する場合、注入ノズ
ルの間隔を最小化して、多数の製品を成形し得るので、
作業の効率性が向上される利点を有するものである。As described above, the present invention relates to a valve system for an injection molding machine, which is provided above an injection nozzle.
Injection ports inserted into each injection nozzle at the bottom of the cylinder piston so that the injection ports of multiple injection nozzles of one cylinder device can be opened and closed without a cylinder device that individually opens and closes the injection port of the injection nozzle. By connecting the valve pins that open and close, the injection ports of a number of injection nozzles are opened and closed by the piston getting on and off, and the cylinders are not installed individually on the injection nozzles, so the structure is simple and the price is low, Even if the nozzle is minimized, the size of the cylinder that operates the valve pin that opens and closes the injection port of the injection nozzle does not have to be reduced according to the size of the injection nozzle. It is applicable, especially when molding small products, since the interval between injection nozzles can be minimized and many products can be molded,
This has the advantage that work efficiency is improved.
【図１】本発明の実施の一形態の構成を示す断面図であ
る。FIG. 1 is a cross-sectional view showing a configuration of an embodiment of the present invention.
【図２】上記実施形態の作動状態を示す断面図である。FIG. 2 is a sectional view showing an operation state of the embodiment.
【図３】本発明の他の実施の形態を示す断面図である。FIG. 3 is a cross-sectional view showing another embodiment of the present invention.
【図４】本発明のさらに他の実施の形態を示す断面図で
ある。FIG. 4 is a sectional view showing still another embodiment of the present invention.
１ 金型 ２ 上固定板 ２ａ 上円板 ３ マニホルド（上マニホルド） ３ａ 第１マニホルド（第１上マニホルド） ３ｂ 第２マニホルド（第２上マニホルド） ４ 注入ノズル ５ 注入孔 ６ キャビティ ７ シリンダ ８ ピストン ９ バルブピン １０ 樹脂ホール １１ ヒーター １２ 熱電対 １３ マニホルド（下マニホルド） １４ 挿入孔 １５ 結合孔 １６ 案内板 １７ａ・１７ｂ 圧力孔 １８ 固定部 １９ 連結部 ２０ 作動バー ２１ ピンガイドブッシュ ２２ Ｏ−リング DESCRIPTION OF SYMBOLS 1 Die 2 Upper fixed plate 2a Upper disk 3 Manifold (upper manifold) 3a 1st manifold (1st upper manifold) 3b 2nd manifold (2nd upper manifold) 4 Injection nozzle 5 Injection hole 6 Cavity 7 Cylinder 8 Piston 9 Valve pin 10 Resin hole 11 Heater 12 Thermocouple 13 Manifold (lower manifold) 14 Insertion hole 15 Coupling hole 16 Guide plate 17a / 17b Pressure hole 18 Fixed part 19 Connection part 20 Operation bar 21 Pin guide bush 22 O-ring
Claims (4)
分配する上マニホルド（３）が設けられ、上固定板
（２）の下部に設けられた上円板（２ａ）には、注入ノ
ズル（４）とピストン（８）を有するシリンダ（７）と
が設けられ、注入ノズル（４）の注入孔（５）は、バル
ブピン（９）により開閉され、下円板（２ｂ）には、キ
ャビティ（６）が形成され、樹脂がキャビティ（６）に
注入されるとき、ピストン（８）が上昇して、バルブピ
ン（９）が注入孔（５）を開放し、キャビティ（６）に
樹脂が充填されると、ピストン（８）が下降して注入孔
（５）を閉鎖する射出成形機の樹脂注入装置において、 注入ノズル（４）の注入孔（５）を開閉するためのシリ
ンダ（７）のピストン（８）の中央に下マニホルド（１
３）が設けられ、下マニホルド（１３）の上部外面に、
ピストン（８）が油圧又は空圧などの圧力を発生する圧
力孔（１７ａ、１７ｂ）により案内板（１６）の案内に
したがって乗降するように結合され、ピストン（８）の
下部には、注入ノズル（４）の注入孔（５）を開閉する
バルブピン（９）が多数結合されることにより、一つの
シリンダ（７）で多数の注入ノズル（４）の注入孔
（５）が開閉されるようにしたことを特徴とする一つの
ピストンで多数のバルブピンを作動する射出成形機の樹
脂注入装置。An upper manifold (3) for distributing resin is provided on an upper fixed plate (2) of a mold (1), and an upper disk (2a) provided below the upper fixed plate (2). ) Is provided with an injection nozzle (4) and a cylinder (7) having a piston (8), the injection hole (5) of the injection nozzle (4) is opened and closed by a valve pin (9), and the lower disk ( 2b), a cavity (6) is formed, and when the resin is injected into the cavity (6), the piston (8) rises, the valve pin (9) opens the injection hole (5), and the cavity (6) is opened. When the resin is filled in 6), the piston (8) descends to close the injection hole (5). In the resin injection device of the injection molding machine, the injection hole (5) of the injection nozzle (4) is opened and closed. In the center of the piston (8) of the cylinder (7), the lower manifold (1
3) is provided, on the upper outer surface of the lower manifold (13),
The piston (8) is coupled to get on and off according to the guidance of the guide plate (16) by pressure holes (17a, 17b) for generating pressure such as hydraulic pressure or pneumatic pressure. By connecting a large number of valve pins (9) for opening and closing the injection holes (5) of (4), the injection holes (5) of many injection nozzles (4) can be opened and closed by one cylinder (7). A resin injection device for an injection molding machine that operates a number of valve pins with one piston.
の上円板（２ａ）に、上マニホルド（３）の樹脂ホール
に連結される樹脂ホール（１０）が放射状に形成され、
内部にはヒーター（１１）と温度感知器である熱電対
（１２）が設けられ、下部周辺に、注入ノズル（４）が
挿入される多数の挿入孔（１４）が形成され、前記挿入
孔（１４）を貫通してバルブピン（９）が結合される結
合孔（１５）が形成されたことを特徴とする請求項１記
載の一つのピストンで多数のバルブピンを作動する射出
成形機の樹脂注入装置。2. The lower manifold (13) includes a mold (1).
A resin hole (10) connected to a resin hole of the upper manifold (3) is radially formed in the upper disk (2a),
A heater (11) and a thermocouple (12) serving as a temperature sensor are provided therein, and a plurality of insertion holes (14) into which an injection nozzle (4) is inserted are formed around a lower portion. 2. A resin injection device for an injection molding machine according to claim 1, wherein a plurality of valve pins are operated by one piston. .
挿入孔（１４）の外側に、ヒーター（１１）と熱電対
（１２）を備えて、樹脂の流動性を確保することを特徴
とする請求項１記載の一つのピストンで多数のバルブピ
ンを作動する射出成形機の樹脂注入装置。3. A heater (11) and a thermocouple (12) are provided outside an insertion hole (14) formed at a lower portion of the lower manifold (13) to ensure fluidity of the resin. 2. The resin injection device of an injection molding machine according to claim 1, wherein one piston operates a plurality of valve pins.
１上マニホルド（３ａ）及び第２上マニホルド（３ｂ）
が設けられ、前記上固定板（２）の下部に設けられた上
円板（２ａ）には多数の注入ノズル（４）を備え、前記
上円板（２ａ）の下部にある下円板（２ｂ）には多数の
キャビティ（６）が形成され、前記マニホルド（３ａ、
３ｂ）の間には、ピストン（８）を有するシリンダ
（７）を備える固定部（１８）が結合され、前記シリン
ダ（７）のピストン（８）の中央には、内部に樹脂ホー
ル（１０）を有し外部にヒーター（１１）及び熱電対
（１２）を有する連結部（１９）が設けられ、前記固定
部（１８）の下部には、ピストン（８）の下部が結合さ
れ、前記多数の注入ノズル（４）の注入孔（５）を開閉
するバルブピン（９）が多数結合された作動バー（２
０）が設けられることにより、シリンダ（７）のピスト
ン（８）が乗降することにより作動バー（２０）が乗降
して、バルブピン（９）が注入ノズル（４）の注入孔
（５）を開閉するようにすることを特徴とする一つのピ
ストンで多数のバルブピンを作動する射出成形機の樹脂
注入装置。4. A first upper manifold (3a) and a second upper manifold (3b) above and below an upper fixing plate (2) of a mold (1).
The upper disk (2a) provided below the upper fixed plate (2) is provided with a number of injection nozzles (4), and the lower disk (2) provided below the upper disk (2a). 2b) has a number of cavities (6) formed therein, said manifolds (3a,
3b), a fixing part (18) including a cylinder (7) having a piston (8) is connected, and a resin hole (10) is provided in the center of the piston (8) of the cylinder (7). A connecting part (19) having a heater (11) and a thermocouple (12) is provided outside, and a lower part of the piston (8) is connected to a lower part of the fixing part (18). An operating bar (2) to which a number of valve pins (9) for opening and closing the injection hole (5) of the injection nozzle (4) are connected.
0), the piston (8) of the cylinder (7) gets on and off, the operating bar (20) gets on and off, and the valve pin (9) opens and closes the injection hole (5) of the injection nozzle (4). A resin injection device of an injection molding machine that operates a number of valve pins with one piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29072099A JP4024436B2 (en) | 1999-10-13 | 1999-10-13 | Resin injection device for injection molding machine that operates many valve pins with one piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29072099A JP4024436B2 (en) | 1999-10-13 | 1999-10-13 | Resin injection device for injection molding machine that operates many valve pins with one piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001105458A true JP2001105458A (en) | 2001-04-17 |
| JP4024436B2 JP4024436B2 (en) | 2007-12-19 |
Family
ID=17759663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29072099A Expired - Fee Related JP4024436B2 (en) | 1999-10-13 | 1999-10-13 | Resin injection device for injection molding machine that operates many valve pins with one piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4024436B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100446819B1 (en) * | 2001-11-28 | 2004-09-01 | 유도실업주식회사 | Automefic oil pressure control method and device of oil pressule cylinder |
| US7192270B2 (en) | 2002-11-05 | 2007-03-20 | Mold-Masters Limited | Tight pitch nozzle with individual valve gate control |
| US7553150B2 (en) | 2006-06-19 | 2009-06-30 | Mold-Masters (2007) Limited | Valve-pin actuating device for a hot runner apparatus |
| US7766646B2 (en) | 2007-06-22 | 2010-08-03 | Mold-Masters (2007) Limited | Injection molding apparatus with plate actuation of valve pins |
| CN107160643A (en) * | 2017-07-20 | 2017-09-15 | 广东柳道热流道系统有限公司 | One cylinder spininess New type hot runner system |
| CN112895336A (en) * | 2021-04-01 | 2021-06-04 | 江苏博盟科技有限公司 | Flash-free liquid silica gel mold |
-
1999
- 1999-10-13 JP JP29072099A patent/JP4024436B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100446819B1 (en) * | 2001-11-28 | 2004-09-01 | 유도실업주식회사 | Automefic oil pressure control method and device of oil pressule cylinder |
| US7192270B2 (en) | 2002-11-05 | 2007-03-20 | Mold-Masters Limited | Tight pitch nozzle with individual valve gate control |
| US7553150B2 (en) | 2006-06-19 | 2009-06-30 | Mold-Masters (2007) Limited | Valve-pin actuating device for a hot runner apparatus |
| US7766646B2 (en) | 2007-06-22 | 2010-08-03 | Mold-Masters (2007) Limited | Injection molding apparatus with plate actuation of valve pins |
| CN107160643A (en) * | 2017-07-20 | 2017-09-15 | 广东柳道热流道系统有限公司 | One cylinder spininess New type hot runner system |
| CN112895336A (en) * | 2021-04-01 | 2021-06-04 | 江苏博盟科技有限公司 | Flash-free liquid silica gel mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4024436B2 (en) | 2007-12-19 |
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