JPH10100212A - Injection molding machine - Google Patents
Injection molding machineInfo
- Publication number
- JPH10100212A JPH10100212A JP26176796A JP26176796A JPH10100212A JP H10100212 A JPH10100212 A JP H10100212A JP 26176796 A JP26176796 A JP 26176796A JP 26176796 A JP26176796 A JP 26176796A JP H10100212 A JPH10100212 A JP H10100212A
- Authority
- JP
- Japan
- Prior art keywords
- injection
- molten resin
- cavity
- driving
- molding machine
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/13—Injection moulding apparatus using two or more injection units co-operating with a single mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (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、射出成形機に関す
るものである。[0001] The present invention relates to an injection molding machine.
【０００２】[0002]
【従来の技術】従来の射出成形機の射出構造は、次のよ
うな構成である。2. Description of the Related Art The injection structure of a conventional injection molding machine has the following configuration.
【０００３】インライン方式においては、射出シリンダ
内の射出スクリューを回転させることにより後方に供給
された樹脂が溶融されつつ、逆止リングを介して射出ス
クリューの前方へ送り込まれる。In the in-line system, the resin supplied rearward is melted by rotating an injection screw in an injection cylinder, and is fed to the front of the injection screw via a check ring.
【０００４】この前部に送り込んだ溶融樹脂により後方
へ後退した射出スクリューを前方へ押し出して、この溶
融樹脂を射出シリンダ前端のノズル部から金型内へ射出
し、更にこの射出スクリューを前方へ加圧して金型内へ
射出した樹脂を保圧する構成としている。[0004] The molten resin fed into the front portion pushes out the injection screw which has retreated backward, pushes forward the molten resin, injects the molten resin into the mold from the nozzle portion at the front end of the injection cylinder, and further applies the injection screw forward. It is configured to keep the resin injected into the mold by pressing.
【０００５】また、プリプラ方式においては、射出シリ
ンダの前部に供給部を逆止弁を介して連設し、この供給
部内の供給スクリューを回転させることで供給部から射
出シリンダの前部に溶融樹脂を送り込み、この送り込ん
だ溶融樹脂により後方へ後退した射出シリンダ内の射出
プランジャーを前方へ押し出して、この溶融樹脂を射出
シリンダ前端のノズル部から金型内へ射出し、更にこの
射出スクリューを前方へ加圧して金型内へ射出した樹脂
を保圧する構成としている。In the pre-plasticizer system, a supply section is connected to the front of the injection cylinder via a check valve, and the supply screw in the supply section is rotated to melt the supply section into the front of the injection cylinder. The resin is fed in, the injection plunger in the injection cylinder retreated backward by the fed molten resin is pushed forward, the molten resin is injected into the mold from the nozzle portion at the front end of the injection cylinder, and the injection screw is further discharged. It is configured to keep the pressure of the resin injected into the mold by pressing it forward.
【０００６】従来のこのような射出成形機においては、
射出スクリュー或いは射出プランジャーを押し出し制御
する駆動装置（アクチェータ）を設けている。In such a conventional injection molding machine,
A driving device (actuator) for controlling the ejection of the injection screw or the injection plunger is provided.
【０００７】即ち、この駆動装置を制御することで、所
定量の溶融樹脂を前方へ送り込んだ後（計量完了後）、
射出スクリューや射出プランジャーなどの射出駆動体を
前方へ押し出し駆動し、更にその後所定時間加圧して保
圧する構成としている。That is, by controlling this driving device, after a predetermined amount of the molten resin is fed forward (after the completion of the measurement),
An injection driving body such as an injection screw or an injection plunger is driven to be pushed forward, and then pressurized and held for a predetermined time thereafter.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、従来の
射出成形機は、一つの金型に対して一つの射出シリンダ
を設けた構成であり、この射出シリンダの射出駆動体を
一つの駆動装置により駆動するに過ぎない。従って、一
つの金型に複数のキャビティがある場合でも、或いはキ
ャビティの形状が複雑で二か所のゲート部から一つのキ
ャビティに射出注入する場合であっても、前記一つの射
出シリンダの前端ノズル部からキャビティへ溶融樹脂を
導くランナーを分岐させ、この分岐したランナーを介し
て注入口（ゲート部）からキャビティへ注入する構成で
ある。However, the conventional injection molding machine has a configuration in which one injection cylinder is provided for one mold, and the injection driving body of the injection cylinder is driven by one driving device. It just does. Therefore, even when there is a plurality of cavities in one mold, or when the shape of the cavities is complicated and injection is injected from two gate portions into one cavity, the front end nozzle of the one injection cylinder is used. In this configuration, a runner that guides the molten resin from the portion to the cavity is branched, and the molten resin is injected into the cavity from the injection port (gate portion) via the branched runner.
【０００９】この一つの射出シリンダから分岐ランナー
を介して注入するこれまでの構成に本発明者は次のよう
な問題点を見い出した。The inventor of the present invention has found the following problems in the conventional configuration in which injection is performed from one injection cylinder through a branch runner.
【００１０】１．多数個取り（複数キャビティ）にした
場合、射出装置が一つの為、品質要因を決定づけるとさ
れている、射出圧力・射出速度・射出時間等の射出条件
の制御が複数のキャビティに均等に及ばないことがあ
る。[0010] 1. In the case of multi-cavity (multiple cavities), the control of injection conditions such as injection pressure, injection speed, injection time, etc., which is considered to determine quality factors, is not evenly applied to multiple cavities because there is only one injection device. Sometimes.
【００１１】２．また、一個取り（単キャビティ）にお
いても、分岐したランナーを介して複数のゲート部から
一つのキャビティに注入する場合、成形品の部分々の肉
厚・幅、或いは長さ（ゲート部からの距離）の違い（各
ゲート部の位置の違い）によって、夫々充填時間・圧力
・流動樹脂の粘度の違いによる変形，反りが発生する。
即ち、各ゲート部での適正な射出条件が異なる場合が多
く、そのために成形品に不良が生じることがある。2. Also, in the case of single-cavity (single cavity), when a plurality of gates are injected into one cavity through a branched runner, the thickness, width, or length of each molded product (distance from the gate) ) (Difference in the position of each gate), deformation and warpage occur due to differences in the filling time, pressure, and viscosity of the flowable resin, respectively.
That is, the appropriate injection conditions in each gate portion are often different, which may cause a defect in a molded product.
【００１２】３．分岐した複雑なランナー部分を要する
ため、それだけ材料費高の問題もある。3. Since a complicated branched runner portion is required, there is also a problem of high material cost.
【００１３】４．近年の成形品における軽薄・短小ニー
ズや、高精度化に対応しにくくなっている。（射出制御
がキャビティの隅々まで及びにくい。） ５．複数のゲート部から流入する流入樹脂がキャビティ
内の流入障壁部の裏側へ回り込むようにして充填される
キャビティ構造の場合、ウェールドが生じ、このウェー
ルドによって強度の弱い部分や突き合い合流位置にライ
ンが生じて成形品の外観も悪くなってしまう問題が生じ
る場合もある。4. In recent years, it has become difficult to respond to needs for lightness, thinness and shortness of molded products, and high precision. (It is difficult to control the injection to every corner of the cavity.) In the case of a cavity structure in which the inflow resin flowing from a plurality of gate portions is filled so as to go to the back side of the inflow barrier portion in the cavity, a weld occurs, and the weld causes a line to be formed at a weak strength portion or abutting junction. This may cause a problem that the appearance of the molded product is deteriorated.
【００１４】本発明は、従来当然とされていたこのよう
な射出成形機の構成に前記様々な問題点が生じることを
見い出し、発想の転換を図り、これらの問題点を解決し
た画期的な射出成形機を提供することを目的としてい
る。The present invention has found that the above-mentioned various problems occur in the structure of such an injection molding machine which has been taken as a matter of course. It aims to provide an injection molding machine.
【００１５】[0015]
【課題を解決するための手段】添付図面を参照して本発
明の要旨を説明する。The gist of the present invention will be described with reference to the accompanying drawings.
【００１６】射出シリンダ１内の射出スクリュー若しく
は射出プランジャなどの射出駆動体２の前部に溶融樹脂
４を送り込み、この前部に送り込んだ溶融樹脂４により
後方へ後退した射出駆動体２を駆動装置５により前方へ
押し出して、前記溶融樹脂４を射出シリンダ１前端から
金型６内のキャビティ７へ射出充填すると共に、更にこ
の射出駆動体２を前方へ加圧してキャビティ７内へ送り
込んだ樹脂を保圧し得るように構成した射出成形機にお
いて、前記射出シリンダ１を複数設け、この各射出シリ
ンダ１内に配する前記射出駆動体２を駆動制御する前記
駆動装置５を各射出駆動体２毎に設け、各射出シリンダ
１の前端から射出される溶融樹脂４の射出圧や射出速度
などの射出条件が夫々異なるように各駆動装置５を駆動
制御し得るように構成したことを特徴とする射出成形機
に係るものである。A molten resin 4 is fed into a front portion of an injection driving body 2 such as an injection screw or an injection plunger in an injection cylinder 1, and the injection driving body 2 retreated backward by the molten resin 4 fed into the front portion is driven. 5, the molten resin 4 is injected and filled into the cavity 7 in the mold 6 from the front end of the injection cylinder 1, and the resin which has been injected into the cavity 7 by further pressing the injection driving body 2 forward. In an injection molding machine configured to be able to hold a pressure, a plurality of the injection cylinders 1 are provided, and the driving device 5 that drives and controls the injection driving bodies 2 arranged in each of the injection cylinders 1 is provided for each of the injection driving bodies 2. The driving devices 5 are controlled so that the injection conditions such as the injection pressure and the injection speed of the molten resin 4 injected from the front end of each injection cylinder 1 are different from each other. Those of the injection molding machine is characterized in that form.
【００１７】また、射出シリンダ１内の射出スクリュー
若しくは射出プランジャなどの射出駆動体２の前部に溶
融樹脂４を送り込み、この前部に送り込んだ溶融樹脂４
により後方へ後退した射出駆動体２を駆動装置５により
前方へ押し出して、前記溶融樹脂４を射出シリンダ１前
端から金型６内のキャビティ７へ射出充填すると共に、
更にこの射出駆動体２を前方へ加圧してキャビティ７内
へ送り込んだ樹脂を保圧し得るように構成した射出成形
機において、前記射出シリンダ１を複数設け、この各射
出シリンダ１内に配する前記射出駆動体２を駆動制御す
る前記駆動装置５を各射出駆動体２毎に設け、各射出シ
リンダ１の前端から射出される溶融樹脂４が、前記金型
６内の夫々別のキャビティ７内へ又は同じキャビティ７
の肉厚・幅・長さなどの形状の違いや注入口となる一か
所のゲートからではそのゲートからの距離の違いによっ
て最適な射出条件が違う位置に夫々設けたゲート部８か
らキャビティ７内へ射出充填されるように構成し、前記
キャビティ７の違い又は前記ゲート部８の位置の違いに
応じて最適な射出条件で夫々射出されるように各駆動装
置５を夫々個別に駆動制御し得るように構成したことを
特徴とする射出成形機に係るものである。Further, the molten resin 4 is fed to a front portion of an injection driving body 2 such as an injection screw or an injection plunger in the injection cylinder 1, and the molten resin 4 sent to the front portion is fed.
The injection driving body 2 retreated backward is pushed forward by the driving device 5 to inject and fill the molten resin 4 from the front end of the injection cylinder 1 into the cavity 7 in the mold 6.
Further, in an injection molding machine configured to be able to maintain the pressure of the resin sent into the cavity 7 by pressurizing the injection driving body 2 forward, a plurality of the injection cylinders 1 are provided, and the injection cylinders 1 are arranged in the respective injection cylinders 1. The driving device 5 for controlling the driving of the injection driving body 2 is provided for each of the injection driving bodies 2, and the molten resin 4 injected from the front end of each of the injection cylinders 1 is injected into a separate cavity 7 in the mold 6. Or the same cavity 7
Due to differences in shape such as wall thickness, width, length, etc., and differences in the distance from the gate to one injection gate, the optimum injection conditions differ depending on the gate portion 8 to the cavity 7. Each driving device 5 is individually driven and controlled so as to be injected under an optimum injection condition according to the difference of the cavity 7 or the difference of the position of the gate portion 8. The present invention relates to an injection molding machine characterized in that the injection molding machine is configured to obtain the same.
【００１８】また、前記各射出シリンダ１前端から射出
される前記溶融樹脂４を、分岐するランナー９を介して
複数のゲート部８からキャビティ７内へ射出充填せず、
前記射出シリンダ１の数だけ前記ゲート部８を設け、こ
の各射出シリンダ１から夫々分岐しないランナー９を介
して一の射出シリンダ１に対応する一のゲート部８から
キャビティ内へ射出充填するように構成したことを特徴
とする請求項１，２のいずれか１項に記載の射出成形機
に係るものである。Also, the molten resin 4 injected from the front end of each injection cylinder 1 is not injected and filled into the cavity 7 from the plurality of gates 8 via the branching runner 9.
The same number of the gate portions 8 as the number of the injection cylinders 1 are provided, and the injection is filled into the cavity from one gate portion 8 corresponding to one injection cylinder 1 via a runner 9 not branched from each injection cylinder 1. The injection molding machine according to any one of claims 1 and 2, wherein the injection molding machine is configured.
【００１９】また、前記射出シリンダ１内に射出駆動体
２を配設し、この射出シリンダ１の前部に供給スクリュ
ー10を配設した供給部３を設け、この供給スクリュー10
を回転させることで供給部３から射出シリンダ１内の前
部に溶融樹脂４を送り込み、この射出シリンダ１の前部
に送り込んだ溶融樹脂４により後退した射出駆動体２を
この射出駆動体２毎に設けた前記駆動装置５を駆動制御
して前方へ押し出して、射出シリンダ１の前端から溶融
樹脂４を射出するように構成したことを特徴とする請求
項１〜３のいずれか１項に記載の射出成形機に係るもの
である。Further, an injection driving body 2 is provided in the injection cylinder 1, and a supply section 3 having a supply screw 10 provided in front of the injection cylinder 1 is provided.
The molten resin 4 is fed from the supply unit 3 to the front of the injection cylinder 1 by rotating the injection unit 1, and the injection driving body 2 retracted by the molten resin 4 fed to the front of the injection cylinder 1 is used for each of the injection driving bodies 2. The drive device 5 provided in the above is driven so as to be pushed forward to inject the molten resin 4 from the front end of the injection cylinder 1. The present invention relates to an injection molding machine.
【００２０】[0020]
【発明の実施の形態】好適と考える本発明の実施の形態
（発明をどのように実施するか）を、図面に基づいてそ
の作用効果を示して簡単に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
【００２１】各射出シリンダ１から射出される溶融樹脂
４がゲート部８からキャビティ７内へ注入される。The molten resin 4 injected from each injection cylinder 1 is injected from the gate 8 into the cavity 7.
【００２２】この溶融樹脂４の射出圧力・射出速度など
の射出条件は、溶融樹脂４を押し出す射出駆動体２をこ
の射出駆動体２毎に設けた各個の駆動装置５により制御
して決定する。The injection conditions such as the injection pressure and the injection speed of the molten resin 4 are determined by controlling the injection drive 2 for extruding the molten resin 4 by the respective driving devices 5 provided for each injection drive 2.
【００２３】従って、例えば成形品を複数個取りする場
合に各キャビティ毎に前記射出シリンダ１を設け、この
射出シリンダ１内の射出駆動体２を駆動する駆動装置５
を個別に制御して、各キャビティ毎に最適な射出条件で
溶融樹脂４を充填・保圧する。Accordingly, for example, when a plurality of molded products are taken, the injection cylinder 1 is provided for each cavity, and the driving device 5 for driving the injection driving body 2 in the injection cylinder 1 is provided.
Are individually controlled to fill and hold the molten resin 4 under the optimal injection conditions for each cavity.
【００２４】また、一つのキャビティ７に対して複数か
所に設けたゲート部８から注入する場合でも、このゲー
ト部８に前記射出シリンダ１を設け、この各駆動装置５
を個別に制御して、各ゲート部８毎に最適な射出条件で
溶融樹脂４を充填・保圧する。In addition, even when injection is performed from a plurality of gate portions 8 provided in one cavity 7, the injection cylinder 1 is provided in the gate portion 8, and each driving device 5
Are individually controlled to fill and hold the molten resin 4 under the optimal injection conditions for each gate portion 8.
【００２５】即ち、各ゲート部８の位置において、成形
品の肉厚や形状やもし一か所のゲート部からではそのゲ
ート部からの距離の違いなどがあり、厳密にはあるゲー
ト部８の射出圧を低くしたり、あるゲート部８の射出速
度を速くしたりする方が望ましい場合などがあるから、
各駆動装置５を個別に制御して、夫々のゲート部８から
その位置での最適な条件で射出・保圧がなされるように
する。That is, at the position of each gate portion 8, there is a difference in the thickness and shape of the molded product, the distance from one gate portion to the gate portion, and the like. In some cases, it is desirable to lower the injection pressure or to increase the injection speed of a certain gate section 8.
Each of the driving devices 5 is individually controlled so that the injection and the pressure holding are performed from the respective gate portions 8 under the optimum condition at the position.
【００２６】また、ゲート部８の位置での肉厚や形状や
長さ（ゲートからの距離）がたとえ同じであっても、キ
ャビティ７内に流入障壁部13があり、溶融樹脂４が流入
障壁部13の裏側に回り込むように充填されるキャビティ
構造の場合においては、一つの射出シリンダ１から分岐
ランナーを介して異なるゲートから溶融樹脂４が例えば
同じ流入速度で注入されると、流入障壁部13の裏側にウ
ェールドを生じ得るが、あえて前記各ゲート部８に対し
て射出シリンダ１を設け、駆動装置５の制御により射出
条件（流入速度）をあえて異ならせることにより流入障
壁部13の裏側に渦流作用等を生じさせてウェールドの発
生を抑制する。Even if the thickness, shape and length (distance from the gate) at the position of the gate portion 8 are the same, there is an inflow barrier portion 13 in the cavity 7 and the molten resin 4 is In the case of the cavity structure filled so as to go around the back side of the portion 13, when the molten resin 4 is injected from one injection cylinder 1 through a branch runner through different gates, for example, at the same inflow speed, the inflow barrier portion 13 is formed. The injection cylinder 1 is provided for each of the gate portions 8, and the injection conditions (inflow speed) are intentionally made different by the control of the driving device 5, so that a vortex flows behind the inflow barrier portion 13. An effect or the like is generated to suppress the occurrence of weld.
【００２７】このようにして、様々なケースに対して適
宜個別に駆動装置５を適正に制御することで、品質の高
い成形が実現できることになる。In this way, by appropriately controlling the driving device 5 appropriately and individually for various cases, high quality molding can be realized.
【００２８】[0028]
【実施例】本発明の具体的な実施例について図面に基づ
いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.
【００２９】本実施例は、射出条件の制御を高い精度で
行うことのできるプリプラ方式の射出成形機を採用し、
供給部３の排出路11を分岐し、これを複数設けた各射出
シリンダ１の前部に連設する構成としている。This embodiment employs a pre-plastic injection molding machine capable of controlling injection conditions with high accuracy.
The discharge path 11 of the supply section 3 is branched and connected to the front of each injection cylinder 1 provided with a plurality of the discharge paths.
【００３０】即ち、複数の射出シリンダ１の前部に逆止
弁機構・前記分岐排出路11を介して一つの供給シリンダ
３（供給部３）を連設し、この供給シリンダ３内の供給
スクリュー10を回転して、供給シリンダ３から各射出シ
リンダ１内の射出駆動体２（射出プランジャー）の前部
に溶融樹脂４を送り込み、この前部に送り込んだ溶融樹
脂４により後方へ後退した射出駆動体２を前方へ押し出
して、前記溶融樹脂３を射出シリンダ１前端より金型６
内のキャビティ７へ射出すると共に、更にこの射出駆動
体２を前方へ加圧してキャビティ７内へ送り込んだ樹脂
を保圧し得るように制御する駆動装置５を各射出駆動体
２に設けている。That is, one supply cylinder 3 (supply section 3) is connected to the front of the plurality of injection cylinders 1 via the check valve mechanism and the branch discharge path 11, and the supply screw in the supply cylinder 3 is provided. 10, the molten resin 4 is fed from the supply cylinder 3 to the front of the injection driving body 2 (injection plunger) in each injection cylinder 1, and the molten resin 4 sent to the front is used to inject the molten resin 4 backward. The driving body 2 is pushed forward, and the molten resin 3 is discharged from the front end of the injection cylinder 1 into the mold 6.
Each of the injection driving bodies 2 is provided with a driving device 5 which controls the injection driving body 2 so as to inject the resin into the cavity 7 and pressurize the injection driving body 2 forward to maintain the pressure of the resin fed into the cavity 7.
【００３１】また、本実施例の各駆動装置５は次のよう
に構成している。Each drive device 5 of this embodiment is configured as follows.
【００３２】前記各射出駆動体２の前部に溶融樹脂４を
送り込んで計量が完了した後、一旦前記射出駆動体２を
前方へ加圧して前部の溶融樹脂４を圧縮するように制御
する圧縮計量制御部５Ｂを設け、この圧縮計量制御部５
Ｂにより圧縮して前方へ射出駆動体２が移動した位置を
移動開始位置Ｐとして、移動開始位置Ｐを基準に射出駆
動体２を前方へ所定ストロークだけ前進移動せしめる充
填制御部５Ａを設けている。After the molten resin 4 is fed to the front of each of the injection driving bodies 2 and the metering is completed, the injection driving body 2 is controlled to be pressed forward to compress the molten resin 4 at the front. A compression weighing control unit 5B is provided.
A position where the injection driving body 2 is compressed and moved forward by the injection driving body 2 is set as a movement start position P, and a filling control unit 5A is provided for moving the injection driving body 2 forward by a predetermined stroke based on the movement start position P. .
【００３３】また、前記各充填制御部５Ａ並びに前記各
圧縮計量制御部５Ｂを共通の駆動装置とをせず、更に別
々に駆動制御する別個の駆動装置とし、この充填制御部
５Ａを前記射出駆動体２を所定ストロークだけ前方へ押
し出し駆動する充填駆動装置５Ａとし、この圧縮計量制
御部５Ｂを前記保圧制御を行う保圧駆動装置５Ｂとして
いる。Further, each of the filling control sections 5A and each of the compression and weighing control sections 5B are not provided as a common driving apparatus, but are provided as separate driving apparatuses for separately controlling the driving. A filling driving device 5A that pushes the body 2 forward by a predetermined stroke is used as a filling driving device 5A, and the compression weighing control unit 5B is a pressure maintaining driving device 5B that performs the pressure maintaining control.
【００３４】本実施例では、各射出駆動体２の後方に夫
々直列状態に充填駆動装置５Ａ（充填制御部）と保圧駆
動装置５Ｂ（圧縮計量制御部）とを配設し、充填駆動装
置５Ａと、前記保圧駆動装置５Ｂとを、成形ショット毎
前記射出駆動体２の移動途中において、移動停止位置や
圧力を可変制御せず、成形ショット毎常に充填駆動装置
５Ａによって所定位置から設定ストロークだけ射出駆動
体２が前進移動するように制御し、成形ショット毎常に
保圧駆動装置５Ｂによって所定時間一定圧力で射出駆動
体２を加圧制御するように構成している。In the present embodiment, a filling drive unit 5A (filling control unit) and a pressure-holding drive unit 5B (compression metering control unit) are arranged in series behind each injection drive unit 2, respectively. 5A and the pressure-holding drive device 5B are not controlled to variably control the movement stop position or pressure during the movement of the injection driving body 2 for each molding shot, but are always set strokes from a predetermined position by the filling drive device 5A for each molding shot. The injection driving body 2 is controlled so as to move forward only, and the pressure of the injection driving body 2 is controlled at a constant pressure for a predetermined time by the pressure-holding driving device 5B at every molding shot.
【００３５】更に、具体的に説明すれば、保圧駆動装置
５Ｂの駆動ロッド部の進退によって充填駆動装置５Ａが
進退して射出駆動体２が進退するように構成し、且つ、
充填駆動装置５Ａの駆動ロッド部の進退によっても射出
駆動体２が進退するように構成している。More specifically, the charging drive device 5A is advanced and retracted by the advance and retreat of the driving rod portion of the pressure holding drive device 5B, and the injection drive body 2 is advanced and retracted.
The injection driving body 2 is configured to advance and retreat even when the driving rod portion of the filling driving device 5A advances and retreats.
【００３６】本実施例では、後方の圧縮計量制御部５Ｂ
の駆動ロッド部とその前方の充填制御部５Ａのシリンダ
ー体とを一体に構成し、圧縮計量制御部５Ｂの駆動ロッ
ド部の進退によって充填制御部５が進退するように構成
している。In this embodiment, the rear compression weighing control unit 5B
Is integrally formed with the cylinder body of the filling control unit 5A in front thereof, and the filling control unit 5 is advanced and retracted by the advance and retreat of the driving rod unit of the compression metering control unit 5B.
【００３７】尚、このように本発明において、「夫々個
別に駆動制御し得るように構成した」、或いは「別々に
駆動制御する別個の駆動装置で構成した」との意味は、
一つの共通の駆動装置ではなく、別個に制御できる駆動
装置で構成した意味であり、本実施例のように別個に制
御可能であれば互いに一体に連結されている場合も当然
含む意味である。As described above, in the present invention, the meaning of “configured so that they can be individually driven and controlled” or “configured with separate driving devices that are separately driven and controlled” means
This means that it is not a single common drive device but a separately controllable drive device, and if it can be controlled separately as in the present embodiment, it naturally means that it is integrally connected to each other.
【００３８】図中符号12は、キャビティが変更した場合
などに、充填制御部５の駆動ロッド部の計量時の戻り位
置を変更して元々の計量樹脂量を加減するためのピスト
ンストローク調整杆である。Reference numeral 12 in the drawing denotes a piston stroke adjusting rod for changing the return position of the drive rod unit of the filling control unit 5 at the time of weighing and adjusting the original amount of weighed resin when the cavity is changed. is there.
【００３９】図面に基づいて更に説明する。Further description will be made with reference to the drawings.
【００４０】先ず、図１，図２は、一つのキャビティ７
に対して複数ヶ所にゲート部８を設け、このゲート部８
と分岐しないランナー９を介して連結される同数の射出
シリンダ１を設け、この各射出シリンダ１から夫々ゲー
ト部８を介して一つのキャビティ７に溶融樹脂４を射出
注入する構成例である。First, FIGS. 1 and 2 show one cavity 7.
Gate portions 8 are provided at a plurality of locations with respect to
In this configuration, the same number of injection cylinders 1 are connected via runners 9 that do not branch from each other, and the molten resin 4 is injected and injected into one cavity 7 from each of the injection cylinders 1 via a gate portion 8.
【００４１】従って、各ゲート部８の位置において、成
形品の肉厚や形状やもし一か所のゲート部からではその
ゲート部からの距離の違いなどがあるから、各駆動装置
５を個別に制御して、夫々のゲート部８からその位置で
の最適な条件で射出・保圧がなされるようにする。Accordingly, at the position of each gate portion 8, there is a difference in the thickness and shape of the molded product and the distance from one gate portion to the gate portion. The control is performed so that the injection and the pressure holding are performed from the respective gate portions 8 under the optimum condition at the position.
【００４２】即ち、図１，図２に示すようにキャビティ
７の形状が対称でなく、異なる箇所では、異なる射出条
件で射出注入した方が良いキャビティ７の場合には、こ
れら条件が異なる位置にゲート部８を設け、これに対応
して複数の射出シリンダ１（射出機構）を設け、各個に
設けた前記駆動装置５により夫々のゲート部８位置に対
して適正な射出・保圧がなされるように駆動制御する構
成である。That is, as shown in FIGS. 1 and 2, in the case where the cavity 7 is not symmetrical in shape and it is better to inject and inject it under different injection conditions in different places, these conditions are different. A gate section 8 is provided, and a plurality of injection cylinders 1 (injection mechanisms) are provided in correspondence with the gate section 8. Appropriate injection / holding pressure is applied to the position of each gate section 8 by the driving device 5 provided for each of them. Drive control as described above.
【００４３】本実施例は、肉厚部と肉薄部とに夫々ゲー
ト部８を設け、このゲート部８に対応する射出シリンダ
１を設けている。In this embodiment, a gate portion 8 is provided for each of the thick portion and the thin portion, and the injection cylinder 1 corresponding to the gate portion 8 is provided.
【００４４】そして、この射出シリンダ１の射出駆動体
２に各個に設けた駆動装置５を制御して肉厚部分のゲー
ト部８においては低速充填・保圧時間長となるように制
御し、肉薄部分のゲート部８においては、逆に高速充填
・保圧時間短となるように制御する。これにより、射出
速度・圧力などを成形品の形状（この場合には、一つの
成形品の部分々の形状）に合わせることができ、特に大
物成形品における反り・変形が防止でき、精度の高い商
品質の成形品を量産できる。Then, the driving device 5 provided for each of the injection driving bodies 2 of the injection cylinder 1 is controlled so that the thick gate portion 8 is controlled so as to have a low-speed filling / holding time length. On the other hand, the gate portion 8 is controlled so that the high-speed filling and holding time is short. This makes it possible to adjust the injection speed, pressure, etc., to the shape of the molded product (in this case, the shape of each part of one molded product). It can mass produce high quality molded products.
【００４５】また、図３は、所謂複数個取りする金型６
の場合の例で、金型６内の各キャビティ７毎にゲート部
８を設け、このゲート部８に対応して分岐しないランナ
ー９を介して同数の射出シリンダ１を設け、従って、こ
の射出シリンダ１から各ゲート部８を介して各キャビテ
ィ７に溶融樹脂４を注入する構成例（別例１）である。FIG. 3 shows a so-called multiple mold 6.
In the example of the above case, a gate portion 8 is provided for each cavity 7 in the mold 6, and the same number of injection cylinders 1 are provided via runners 9 that do not branch in correspondence with the gate portions 8. This is a configuration example (another example 1) of injecting the molten resin 4 from 1 into each cavity 7 through each gate section 8.
【００４６】従って、この射出シリンダ１内の射出駆動
体２を駆動する駆動装置５を個別に制御して、各キャビ
ティ７毎に最適な射出条件で溶融樹脂４を充填・保圧で
き、各キャビティ７すべてを最適な条件（この場合、現
実に均等な条件）で射出・保圧成形できることになる。Accordingly, the driving device 5 for driving the injection driving body 2 in the injection cylinder 1 can be individually controlled to fill and hold the molten resin 4 under the optimum injection conditions for each cavity 7. Injection and pressure-holding molding can be performed on all 7 under optimum conditions (in this case, conditions that are actually equivalent).
【００４７】また、図４は、ゲート部８の位置での肉厚
や形状や長さ（ゲートからの距離）がたとえ同じであっ
ても、キャビティ７内に流入障壁部13があり、溶融樹脂
４が流入障壁部13の裏側に回り込むように充填されるキ
ャビティ構造の場合に適用したもので（別例２）、この
場合、一つの射出シリンダ１から分岐ランナーを介して
異なるゲートから溶融樹脂４が注入されると、流入障壁
部13の裏側にウェールドを生じ得るが、あえて前記各ゲ
ート部８に対して射出シリンダ１を設け、駆動装置５の
制御により射出条件（溶融樹脂４の流入速度）をあえて
異ならせることにより流入障壁部13の裏側に渦流作用等
を生じさせてウェールドの発生を抑制する。FIG. 4 shows that even if the thickness, shape, and length (distance from the gate) at the position of the gate portion 8 are the same, the inflow barrier portion 13 exists in the cavity 7 and the molten resin This is applied to the case of a cavity structure in which the molten resin 4 is filled so as to wrap around the back side of the inflow barrier section 13 (another example 2). Is injected, a weld may occur on the back side of the inflow barrier portion 13. However, the injection cylinder 1 is provided for each of the gate portions 8, and the injection condition (the inflow speed of the molten resin 4) is controlled by the drive device 5. By making them different from each other, a swirling action or the like is generated on the back side of the inflow barrier portion 13 to suppress the occurrence of weld.
【００４８】このようにして、様々なケースに対して適
宜個別に駆動装置５を適正に制御することで、品質の高
い成形が実現できることになる。In this way, by appropriately controlling the driving device 5 individually and appropriately for various cases, high-quality molding can be realized.
【００４９】尚、本実施例の駆動装置５の充填制御部５
Ａ並びに圧縮計量制御部５Ｂの具体的に作動について付
加説明する。The filling control unit 5 of the driving device 5 of this embodiment
A and the specific operation of the compression weighing control unit 5B will be additionally described.
【００５０】射出駆動体２の前方へ溶融樹脂４を送り込
む計量完了時に、保圧駆動装置５Ｂにより一旦所定圧で
停留している溶融樹脂４を加圧して圧縮する。When the metering of the molten resin 4 in front of the injection driving body 2 is completed, the molten resin 4 once stopped at a predetermined pressure is compressed by the pressure-holding driving device 5B.
【００５１】このとき、例えば前回の成形ショットによ
り金型６内に冷却している樹脂が充填・保圧完了してい
るため、射出不能状態となっていて加圧しても圧縮され
るだけとなるようにしている。At this time, for example, since the cooling resin in the mold 6 has been filled and maintained in pressure by the previous molding shot, it is in a non-injectable state and is compressed only when pressurized. Like that.
【００５２】この圧縮によって、溶融樹脂４内のガス分
・空気分は圧縮排気され或いは一定加圧圧縮の下での容
量が計られることになる。By this compression, the gas content and the air content in the molten resin 4 are compressed and exhausted, or the capacity under constant pressure compression is measured.
【００５３】即ち、この圧縮した状態を保持しても良い
が、本実施例では一旦この加圧を止めることで、射出駆
動体２をサックバックさせ、金型６が開いて成形品を排
出し、再び金型６が閉じ射出可能状態となったとき、充
填駆動装置５Ａを作動させ溶融樹脂４を射出するが、こ
のとき、既に圧縮により射出駆動体２が前進した位置を
一定ストロークの初点位置とする補正を行う。即ち、射
出駆動体２の後方の駆動ロッドに設けた圧縮位置移動検
査部13によりこのロッドの圧縮移動量や移動位置を検知
し、これによりこの補正位置をストローク始動基準（移
動開始位置Ｐ）とし、この移動開始位置Ｐから常に一定
ストローク充填駆動装置５Ａにより射出駆動体２を前進
駆動するように制御する。That is, the compressed state may be maintained. However, in this embodiment, the injection driving body 2 is sucked back by temporarily stopping the pressurization, the mold 6 is opened, and the molded product is discharged. When the mold 6 is closed again to be ready for injection, the molten resin 4 is injected by activating the filling driving device 5A. At this time, the position at which the injection driving body 2 has advanced by compression has been determined as the initial point of the fixed stroke. The position is corrected. That is, the compression position movement inspection unit 13 provided on the drive rod behind the injection driving body 2 detects the compression movement amount and the movement position of the rod, and thereby the correction position is used as a stroke start reference (movement start position P). From the movement start position P, the injection driving body 2 is controlled to be always driven forward by the constant stroke filling driving device 5A.
【００５４】本実施例では、実際の充填駆動装置５Ａの
射出ストロークが、基準ストロークに補正ストローク量
を加えたものとなる。即ち、移動開始位置Ｐからは常に
一定ストロークではあるが、サックバックした位置から
説明すれば、移動開始位置Ｐまで補正ストロークさせた
上で一定ストローク駆動制御することになる。従って、
本実施例では充填駆動装置５Ａの実際のストローク長
は、成形ショット毎に前記圧縮検査によって逐次調整可
変することになる。In this embodiment, the actual injection stroke of the filling driving device 5A is obtained by adding the correction stroke amount to the reference stroke. In other words, although the stroke is always constant from the movement start position P, the fixed stroke drive control is performed after the correction stroke is performed up to the movement start position P from the sucked back position. Therefore,
In the present embodiment, the actual stroke length of the filling driving device 5A can be sequentially adjusted and changed by the compression inspection for each molding shot.
【００５５】また、あくまで充填駆動装置５Ａは常に一
定ストロークとし、補正ストローク量分は保圧駆動装置
５Ｂの圧縮時の液量検知などによって再び同じ圧縮スト
ローク分（補正ストローク分）だけ保圧駆動装置５Ｂに
よって同時駆動するようにしても良い。Further, the filling driving device 5A always has a constant stroke, and the correction stroke amount is again the same as the same compression stroke (correction stroke) by detecting the amount of liquid during compression of the pressure holding driving device 5B. 5B may be driven simultaneously.
【００５６】これにより、常に一旦計量した溶融樹脂４
の圧縮を行い、この圧縮により得た位置（移動開始位置
Ｐ）を基準に所定ストローク前進させる射出制御を行う
ことになるから、ガス分や空気を含んだ溶融樹脂３であ
っても、常に一定圧縮化での容量を一定ストロークの押
し出しにより射出できることになり、実際に金型４内へ
射出される樹脂量が成形ショット毎一定となりこれまで
に比べて飛躍的に精度の高い計量射出が実現される。As a result, the molten resin 4 which is always measured once
Is performed, and injection control is performed to advance a predetermined stroke based on the position (movement start position P) obtained by this compression. Therefore, even if the molten resin 3 contains gas or air, it is always constant. The capacity in the compression can be injected by extrusion with a constant stroke, and the amount of resin actually injected into the mold 4 becomes constant for each molding shot, so that a highly precise metering injection is realized compared to the past. You.
【００５７】即ち、従来においては、たとえ射出シリン
ダ前方への送り込み計量が正確であっても射出圧を加え
て押し出し射出した実際の樹脂量にばらつきがあり、現
実精度の高い計量射出が行われなかったが、本実施例に
よれば、本発明のアイデアと合わせて更に飛躍的に計量
精度が向上することとなる。That is, in the related art, even if the feeding and metering to the front of the injection cylinder is accurate, the actual amount of the resin extruded and injected by adding the injection pressure varies, and the highly accurate metering and injection is not performed. However, according to the present embodiment, the weighing accuracy is further drastically improved in combination with the idea of the present invention.
【００５８】しかも、この一旦溶融樹脂４を加圧圧縮す
る制御を保圧駆動装置５Ｂにより行うから、一定ストロ
ーク制御を行う充填駆動装置５Ａの制御に何ら支障を起
たすことなく、簡単に行い得ることとなる。Further, since the control for once compressing and compressing the molten resin 4 is performed by the pressure-holding driving device 5B, the control can be easily performed without causing any trouble to the control of the filling driving device 5A for performing the constant stroke control. You will get.
【００５９】[0059]
【発明の効果】本発明は上述のように構成したから、例
えば多数個取り（複数キャビティ）にした場合、射出圧
力・射出速度・射出時間等の射出条件の制御が複数のキ
ャビティに均等に及ばないことが防止でき、また、一個
取り（単キャビティ）においても、分岐したランナーを
介して複数のゲート部から一つのキャビティに注入する
場合、成形品の部分々の肉厚・幅、或いは長さ（ゲート
部からの距離）の違い（各ゲート部の位置の違い）によ
って、夫々充填時間・圧力・流動樹脂の粘度の違いによ
る変形，反りが発生することも抑制でき、（特に大きな
成形品の場合における反りや変形を防止でき、）また、
複数のゲート部から流入する流入樹脂がキャビティ内の
流入障壁部の裏側へ回り込むようにして充填されるキャ
ビティ構造の場合、ウェールドが生じにくくなるなど、
精度の高い高品質の成形品を量産できる画期的な射出成
形機となる。Since the present invention is constructed as described above, for example, in the case of multi-cavity (multiple cavities), the control of injection conditions such as injection pressure, injection speed, injection time, etc. is equally applied to a plurality of cavities. Can be prevented, and even in a single cavity (single cavity), when multiple gates are injected into one cavity via a branched runner, the thickness, width, or length of each part of the molded product Due to the difference in (distance from the gate) (the difference in the position of each gate), deformation and warpage due to differences in the filling time, pressure, and viscosity of the flowable resin can be suppressed. To prevent warping and deformation in the case),
In the case of a cavity structure in which inflow resin flowing from a plurality of gate portions is filled so as to wrap around to the back side of the inflow barrier portion in the cavity, it is difficult for weld to occur,
This is a revolutionary injection molding machine that can mass-produce high-precision molded products with high accuracy.
【００６０】また、金型製作上、ランナーの考え方が不
要となりキャビティ配置などの構造上の自由度が広がる
こととなる。In addition, the idea of a runner is not required in the production of a mold, and the degree of freedom in structure such as the arrangement of cavities is increased.
【００６１】また、請求項３記載の発明は、一層前記効
果が発揮され、また、分岐ランナーによる材料の無駄も
少なくなる射出成形機となる。According to the third aspect of the present invention, there is provided an injection molding machine in which the above-mentioned effect is further exerted, and the use of materials by the branch runner is reduced.
【００６２】また、請求項４記載の発明は、一層精度の
高い制御が可能となり、前記効果が一層発揮される極め
て実用性に秀れた射出成形機となる。Further, according to the invention of claim 4, control can be performed with higher accuracy, and an injection molding machine which is extremely practical and exhibits the above-mentioned effects can be obtained.
【図１】本実施例の概略構成説明斜視図である。FIG. 1 is a schematic explanatory perspective view of a configuration of an embodiment.
【図２】本実施例の要部の概略構成説明断面図である。FIG. 2 is a schematic cross-sectional view illustrating a configuration of a main part of the present embodiment.
【図３】本実施例の別例１を示す概略構成説明断面図で
ある。FIG. 3 is a schematic cross-sectional view illustrating the configuration of another example 1 of the present embodiment.
【図４】本実施例の別例２を示す概略構成説明断面図で
ある。FIG. 4 is a schematic sectional view illustrating the configuration of another example 2 of the present embodiment.
１ 射出シリンダ ２ 射出駆動体 ３ 供給部 ４ 溶融樹脂 ５ 駆動装置 ６ 金型 ７ キャビティ ８ ゲート部 ９ ランナー 10 供給スクリュー DESCRIPTION OF SYMBOLS 1 Injection cylinder 2 Injection drive body 3 Supply part 4 Molten resin 5 Drive device 6 Die 7 Cavity 8 Gate part 9 Runner 10 Supply screw
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 佳秀 東京都大田区久が原２丁目11番14号 三共 化成株式会社内 (72)発明者 中沢 修 東京都大田区久が原２丁目11番14号 三共 化成株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Yoshihide Hayashi 2-11-14 Kugahara, Ota-ku, Tokyo Inside Sankyo Chemical Co., Ltd. (72) Inventor Osamu Nakazawa 2-11-14 Kugahara, Ota-ku, Tokyo Sankyo Kasei Inside the corporation
Claims (4)
は射出プランジャなどの射出駆動体の前部に溶融樹脂を
送り込み、この前部に送り込んだ溶融樹脂により後方へ
後退した射出駆動体を駆動装置により前方へ押し出し
て、前記溶融樹脂を射出シリンダ前端から金型内のキャ
ビティへ射出充填すると共に、更にこの射出駆動体を前
方へ加圧してキャビティ内へ送り込んだ樹脂を保圧し得
るように構成した射出成形機において、前記射出シリン
ダを複数設け、この各射出シリンダ内に配する前記射出
駆動体を駆動制御する前記駆動装置を各射出駆動体毎に
設け、各射出シリンダの前端から射出される溶融樹脂の
射出圧や射出速度などの射出条件が夫々異なるように各
駆動装置を駆動制御し得るように構成したことを特徴と
する射出成形機。1. A molten resin is fed to a front portion of an injection driving body such as an injection screw or an injection plunger in an injection cylinder, and the injection driving body which is retracted backward by the molten resin fed to the front portion is moved forward by a driving device. An injection molding machine configured to extrude and inject the molten resin into the cavity in the mold from the front end of the injection cylinder, and to pressurize the injection drive body forward to keep the resin fed into the cavity. , Wherein a plurality of the injection cylinders are provided, and the drive device for driving and controlling the injection drive bodies disposed in the respective injection cylinders is provided for each of the injection drive bodies, and the injection of the molten resin injected from the front end of each of the injection cylinders is performed. An injection molding machine characterized in that each driving device can be driven and controlled such that injection conditions such as pressure and injection speed are different from each other.
は射出プランジャなどの射出駆動体の前部に溶融樹脂を
送り込み、この前部に送り込んだ溶融樹脂により後方へ
後退した射出駆動体を駆動装置により前方へ押し出し
て、前記溶融樹脂を射出シリンダ前端から金型内のキャ
ビティへ射出充填すると共に、更にこの射出駆動体を前
方へ加圧してキャビティ内へ送り込んだ樹脂を保圧し得
るように構成した射出成形機において、前記射出シリン
ダを複数設け、この各射出シリンダ内に配する前記射出
駆動体を駆動制御する前記駆動装置を各射出駆動体毎に
設け、各射出シリンダの前端から射出される溶融樹脂
が、前記金型内の夫々別のキャビティ内へ又は同じキャ
ビティの肉厚・幅・長さなどの形状の違いや注入口とな
る一か所のゲートからではそのゲートからの距離の違い
によって最適な射出条件が違う位置に夫々設けたゲート
部からキャビティ内へ射出充填されるように構成し、前
記キャビティの違い又は前記ゲート部の位置の違いに応
じて最適な射出条件で夫々射出されるように各駆動装置
を夫々個別に駆動制御し得るように構成したことを特徴
とする射出成形機。2. A molten resin is fed into a front portion of an injection driving body such as an injection screw or an injection plunger in an injection cylinder, and the injection driving body which is retracted backward by the molten resin fed into the front portion is moved forward by a driving device. An injection molding machine configured to extrude and inject the molten resin into the cavity in the mold from the front end of the injection cylinder, and to pressurize the injection drive body forward to keep the resin fed into the cavity. In the above, a plurality of the injection cylinders are provided, and the driving device for driving and controlling the injection driving bodies disposed in each of the injection cylinders is provided for each of the injection driving bodies, and the molten resin injected from the front end of each of the injection cylinders is Into the different cavities in the mold or from one gate that becomes the injection port due to differences in shape, such as thickness, width, length, etc. of the same cavity. Is configured such that the optimal injection conditions are injected and filled into the cavity from the respective gate portions provided at different positions depending on the distance from the gate, and according to the difference in the cavity or the difference in the position of the gate portion. An injection molding machine characterized in that each drive device can be individually driven and controlled so as to perform injection under optimum injection conditions.
前記溶融樹脂を、分岐するランナーを介して複数のゲー
ト部からキャビティ内へ射出充填せず、前記射出シリン
ダの数だけ前記ゲート部を設け、この各射出シリンダか
ら夫々分岐しないランナーを介して一の射出シリンダに
対応する一のゲート部からキャビティ内へ射出充填する
ように構成したことを特徴とする請求項１，２のいずれ
か１項に記載の射出成形機。3. A method in which the molten resin injected from the front end of each of the injection cylinders is not injected and filled into the cavity from a plurality of gate portions via a branching runner, and the gate portions are provided by the number of the injection cylinders, 3. The injection molding machine according to claim 1, wherein each of the injection cylinders is configured to perform injection filling into the cavity from one gate portion corresponding to one injection cylinder via a runner that does not branch. The injection molding machine as described.
し、この射出シリンダの前部に供給スクリューを配設し
た供給部を設け、この供給スクリューを回転させること
で供給部から射出シリンダ内の前部に溶融樹脂を送り込
み、この射出シリンダの前部に送り込んだ溶融樹脂によ
り後退した射出駆動体をこの射出駆動体毎に設けた前記
駆動装置を駆動制御して前方へ押し出して、射出シリン
ダの前端から溶融樹脂を射出するように構成したことを
特徴とする請求項１〜３のいずれか１項に記載の射出成
形機。4. An injection driving body is provided in the injection cylinder, and a supply section provided with a supply screw is provided at a front portion of the injection cylinder. The molten resin fed into the front of the injection cylinder, the injection drive body retracted by the molten resin fed into the front part of the injection cylinder is driven forward by controlling the drive unit provided for each of the injection drive bodies, and is pushed forward. The injection molding machine according to any one of claims 1 to 3, wherein the molten resin is injected from a front end of the injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26176796A JPH10100212A (en) | 1996-10-02 | 1996-10-02 | Injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26176796A JPH10100212A (en) | 1996-10-02 | 1996-10-02 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10100212A true JPH10100212A (en) | 1998-04-21 |
Family
ID=17366418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26176796A Pending JPH10100212A (en) | 1996-10-02 | 1996-10-02 | Injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10100212A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005280025A (en) * | 2004-03-29 | 2005-10-13 | Toshiba Mach Co Ltd | Injection molding machine |
| CN105818319A (en) * | 2014-12-10 | 2016-08-03 | 英格拉斯股份公司 | Molding apparatus and method for producing articles molded through sequential injection |
| CN109203348A (en) * | 2017-07-07 | 2019-01-15 | 株式会社小糸制作所 | Resin molded part, the manufacturing method of resin molded part and mold |
| US10207428B2 (en) * | 2012-09-06 | 2019-02-19 | Signature Systems Group, Llc | System for molding plastic materials |
| JP2019177573A (en) * | 2018-03-30 | 2019-10-17 | 住友重機械工業株式会社 | Injection molding machine, mold device |
| USD895161S1 (en) | 2019-04-12 | 2020-09-01 | Signature Systems Group Llc | Modular flooring tile |
| CN111890707A (en) * | 2020-07-16 | 2020-11-06 | 张家港保税区百瑞坤航空材料科技有限公司 | Liquid forming process for composite material |
| CN116618601A (en) * | 2023-05-29 | 2023-08-22 | 伯乐智能装备股份有限公司 | High-efficiency double-order double-injection light alloy mixed forming device and process |
-
1996
- 1996-10-02 JP JP26176796A patent/JPH10100212A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005280025A (en) * | 2004-03-29 | 2005-10-13 | Toshiba Mach Co Ltd | Injection molding machine |
| US10207428B2 (en) * | 2012-09-06 | 2019-02-19 | Signature Systems Group, Llc | System for molding plastic materials |
| US10442119B2 (en) | 2012-09-06 | 2019-10-15 | Signature Systems Group, Llc | Method for molding plastic materials |
| CN105818319A (en) * | 2014-12-10 | 2016-08-03 | 英格拉斯股份公司 | Molding apparatus and method for producing articles molded through sequential injection |
| CN109203348A (en) * | 2017-07-07 | 2019-01-15 | 株式会社小糸制作所 | Resin molded part, the manufacturing method of resin molded part and mold |
| CN109203348B (en) * | 2017-07-07 | 2021-09-14 | 株式会社小糸制作所 | Resin molded article, method for producing resin molded article, and mold |
| JP2019177573A (en) * | 2018-03-30 | 2019-10-17 | 住友重機械工業株式会社 | Injection molding machine, mold device |
| USD895161S1 (en) | 2019-04-12 | 2020-09-01 | Signature Systems Group Llc | Modular flooring tile |
| CN111890707A (en) * | 2020-07-16 | 2020-11-06 | 张家港保税区百瑞坤航空材料科技有限公司 | Liquid forming process for composite material |
| CN116618601A (en) * | 2023-05-29 | 2023-08-22 | 伯乐智能装备股份有限公司 | High-efficiency double-order double-injection light alloy mixed forming device and process |
| CN116618601B (en) * | 2023-05-29 | 2024-03-12 | 伯乐智能装备股份有限公司 | High-efficiency double-order double-injection light alloy mixed forming device and process |
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