JPH09239770A - Method and apparatus for producing injection-molded product - Google Patents

Method and apparatus for producing injection-molded product

Info

Publication number
JPH09239770A
JPH09239770A JP4877996A JP4877996A JPH09239770A JP H09239770 A JPH09239770 A JP H09239770A JP 4877996 A JP4877996 A JP 4877996A JP 4877996 A JP4877996 A JP 4877996A JP H09239770 A JPH09239770 A JP H09239770A
Authority
JP
Japan
Prior art keywords
injection
resin
cavity
flow path
cavities
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
Application number
JP4877996A
Other languages
Japanese (ja)
Inventor
Noboru Umemori
昇 梅森
Original Assignee
Mitsubishi Plastics Ind Ltd
三菱樹脂株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Plastics Ind Ltd, 三菱樹脂株式会社 filed Critical Mitsubishi Plastics Ind Ltd
Priority to JP4877996A priority Critical patent/JPH09239770A/en
Publication of JPH09239770A publication Critical patent/JPH09239770A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To stably produce a plurality of injection-molded products by changing over the resin passages connected to respective cavities during one injection operation of an injection molding means and successively performing the injection of a resin at every predetermined cavities. SOLUTION: When the completion of the injection of a resin into a cavity C1 and the completion of the filling of the cavity C1 with a resin are grasped by a control unit 40, the injection operation of an injection molding means 20 is temporarily stopped and the passage changeover means 30a on the side of the cavity C1 is closed and the passage changeover means 30b on the side of a cavity C2 is opened. Continuously, the injection operation of the injection molding means 20 is resumed and a resin is injected into the other cavity C2 according to the optimum injection molding condition in the preset cavity C2. When the injection and filling of the resin to the cavity C2 are completed, a mold 10 is opened to take out an injection-molded product.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、射出成形品の製造
方法及び装置に関し、特に、形状が異なる複数のキャビ
ティを有する金型を用いて一型閉サイクルで複数の射出
成形品を製造する方法及び装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for manufacturing injection-molded products, and more particularly to a method for manufacturing a plurality of injection-molded products in one mold closing cycle using a mold having a plurality of cavities having different shapes. And equipment.

【0002】[0002]

【従来の技術】従来から、2個以上の複数のキャビティ
を有する射出成形金型と射出成形機とを用いて、金型の
一型閉サイクルで複数の射出成形品を同時に製造するこ
とが行われている。
2. Description of the Related Art Conventionally, an injection molding die having two or more cavities and an injection molding machine have been used to simultaneously manufacture a plurality of injection molded products in one mold closing cycle of the die. It is being appreciated.

【0003】[0003]

【発明が解決しようとする課題】しかし、従来は、射出
成形機の1回の射出動作で複数のキャビティの全てに同
時に樹脂を射出するため、異なる品種・サイズの製品を
セット取りする場合等、すなわち、各キャビティの大き
さや形状等が異なる場合には、製品の肉厚の違いや形状
の違いにより、ショートショット等の品質不良が発生す
ることがある。
However, in the prior art, since resin is simultaneously injected into all of a plurality of cavities by one injection operation of an injection molding machine, when products of different kinds and sizes are set, That is, when the sizes and shapes of the cavities are different, quality defects such as short shots may occur due to differences in product thickness and shapes.

【0004】このような品質不良の発生を防止するた
め、射出時に速度や圧力等の射出条件を多段に設定する
ことも行われているが、全てのキャビティに同時に樹脂
を射出するため、個々のキャビティについて最良の条件
を設定することは困難であり、設定も複雑なものとなっ
ていた。
In order to prevent the occurrence of such quality defects, injection conditions such as speed and pressure are set in multiple stages at the time of injection. However, since the resin is injected into all the cavities at the same time, individual injection is performed. It was difficult to set the best condition for the cavity, and the setting was complicated.

【0005】そこで本発明は、各キャビティへの樹脂の
射出・充填を、該キャビティにおける最も望ましい条件
で行うことが可能で、複数の射出成形品を安定して製造
することができる方法及び装置を提供することを目的と
している。
Therefore, the present invention provides a method and apparatus capable of injecting and filling a resin into each cavity under the most desirable conditions in the cavity and stably producing a plurality of injection molded products. It is intended to be provided.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するた
め、本発明の射出成形品の製造方法は、複数のキャビテ
ィを有する金型を用いて一型閉サイクルで複数の射出成
形品を製造するにあたり、射出成形手段の一射出動作中
に、各キャビティにそれぞれ接続した樹脂流路を切換え
ることにより、あるいは、射出成形手段の一射出動作中
に、該射出成形手段の射出動作を一時的に所定回数停止
させるとともに、該射出動作の一時停止中に各キャビテ
ィにそれぞれ接続した樹脂流路を切換えることにより、
所定のキャビティ毎に樹脂の射出を順次行うことにより
複数の射出成形品を得ることを特徴としている。
In order to achieve the above object, a method of manufacturing an injection molded product according to the present invention uses a mold having a plurality of cavities to manufacture a plurality of injection molded products in one mold closing cycle. In this case, the injection operation of the injection molding means is temporarily determined by switching the resin flow path connected to each cavity during one injection operation of the injection molding means or during the one injection operation of the injection molding means. By stopping the number of times and switching the resin flow path connected to each cavity during the suspension of the injection operation,
It is characterized in that a plurality of injection-molded products are obtained by sequentially injecting resin for each predetermined cavity.

【0007】また、本発明の射出成形品の製造装置は、
前記複数のキャビティに接続した樹脂流路を順次切換可
能な樹脂流路切換手段を備えていることを特徴とし、こ
の樹脂流路切換手段に加えて、射出動作を所定位置で一
時停止可能な射出成形手段を備えていることを特徴とし
ている。
Further, the apparatus for manufacturing an injection-molded article according to the present invention is
A resin flow passage switching means capable of sequentially switching the resin flow passages connected to the plurality of cavities is provided, and in addition to the resin flow passage switching means, an injection operation capable of temporarily stopping the injection operation at a predetermined position. It is characterized in that it is provided with a molding means.

【0008】さらに、本発明は、前記射出成形手段とし
て所定のキャビティへの射出動作毎にあらかじめ異なる
射出成形条件を設定可能なものを使用し、所定のキャビ
ティ毎に、あらかじめ異なる射出成形条件を設定したこ
とを特徴とし、また、前記所定のキャビティへの射出操
業データを検出し、該キャビティへの樹脂の射出とキャ
ビティ内への樹脂の充填完了とを把握した後、流路切換
手段による樹脂流路の切換えや、前記射出成形手段の射
出動作の一時停止を行うことを特徴としている。
Further, according to the present invention, as the injection molding means, one which can set different injection molding conditions in advance for each injection operation into a predetermined cavity is used, and different injection molding conditions are set in advance for each predetermined cavity. In addition, after detecting the injection operation data to the predetermined cavity and grasping the injection of the resin into the cavity and the completion of the resin filling into the cavity, the resin flow by the flow path switching means is detected. It is characterized in that the path is switched and the injection operation of the injection molding means is temporarily stopped.

【0009】[0009]

【発明の実施の形態】以下、本発明を、図面を参照して
さらに詳細に説明する。図1は本発明の射出成形品の製
造装置の一例を示す断面図、図2乃至図7はそれぞれ流
路切換手段の形態例を示す説明図、図8は射出成形条件
の条件設定パターンの一例を示す図、図9乃至図12は
キャビティ及び流路切換手段の配置例を示す説明図であ
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of an injection-molded article manufacturing apparatus of the present invention, FIGS. 2 to 7 are explanatory views showing an example of the form of flow path switching means, and FIG. 8 is an example of a condition setting pattern of injection molding conditions. FIGS. 9 to 12 are explanatory views showing an example of arrangement of the cavity and the flow path switching means.

【0010】まず、図1に示すように、この射出成形品
の製造装置は、複数のキャビティC1,C2を有する金
型10と、該金型10内に樹脂を射出する射出成形手段
20と、金型10内に設けられた流路切換手段30a,
30bとにより構成されている。
First, as shown in FIG. 1, this injection molded article manufacturing apparatus comprises a mold 10 having a plurality of cavities C1 and C2, and an injection molding means 20 for injecting a resin into the mold 10. Flow path switching means 30a provided in the mold 10,
And 30b.

【0011】金型10は、キャビティC1,C2を形成
する固定型11及び可動型12からなるもので、該金型
10には、射出成形手段20に接続されるスプルーS
と、該スプルーSから分岐して各キャビティのゲートG
にそれぞれ接続するランナーRと、該ランナーRの途中
に設けられた前記流路切換手段30a,30bとを有し
ている。
The mold 10 comprises a fixed mold 11 and a movable mold 12 which form cavities C1 and C2. The mold 10 has a sprue S connected to an injection molding means 20.
And the gate G of each cavity branched from the sprue S
And a flow path switching means 30a, 30b provided in the middle of the runner R.

【0012】また、射出成形手段20は、周知の射出成
形機と同様に、シリンダー21内にスクリュー22を前
後進可能に配置するとともに、該スクリュー22を前後
進させるための油圧ユニット23と、シリンダー21内
に樹脂を供給するホッパー24及びシリンダー21を加
熱するヒーター25等を有するもので、シリンダー21
の先端のノズル26から金型10内に樹脂を射出する。
The injection molding means 20 has a screw 22 arranged in a cylinder 21 so that it can be moved forward and backward, a hydraulic unit 23 for moving the screw 22 forward and backward, and a cylinder, as in a known injection molding machine. 21 includes a hopper 24 for supplying resin and a heater 25 for heating the cylinder 21.
Resin is injected into the mold 10 from the nozzle 26 at the tip of the.

【0013】また、前記油圧ユニット23及び流路切換
手段30a,30bには、これらの動作を制御するため
の制御装置40が接続されている。この制御装置40に
は、射出動作における射出圧,保持圧,射出速度,速度
切換え位置,保圧切換え位置,射出時間,保圧時間,一
時停止位置等の射出成形条件及び流路切換手段30a,
30bの切換えタイミングがあらかじめ設定され、ま
た、時間,スクリュー位置,圧力変化,速度変化,キャ
ビティ内圧等の射出操業データが検出値として入力され
ている。
A control device 40 for controlling these operations is connected to the hydraulic unit 23 and the flow path switching means 30a and 30b. The control device 40 includes injection molding conditions such as injection pressure, holding pressure, injection speed, speed switching position, pressure switching position, injection time, pressure holding time, temporary stop position, and flow path switching means 30a in the injection operation.
The switching timing of 30b is set in advance, and injection operation data such as time, screw position, pressure change, speed change, and cavity internal pressure are input as detection values.

【0014】前記流路切換手段30a,30bは、例え
ば、図2に示すように、ランナーRの途中に、樹脂流路
31aを有するコック31を配設し、該コック31を所
定角度回動させることによりランナーRの樹脂流路を開
閉する形式のもの、図3に示すように、ランナーRの途
中に出没可能な遮蔽部材32を配設し、該遮蔽部材32
を移動させることによりランナーRの樹脂流路を開閉す
る形式のもの、図4に示すように、ランナーRの途中に
加熱部33を設け、該加熱部33が非作動状態のときに
ランナーR内の樹脂が冷却されて固化することにより樹
脂流路を閉塞し、加熱部33を作動させてランナーR内
の樹脂を加熱することにより、樹脂に流動性を与えて流
動可能にする形式のもの、図5に示すように、ランナー
Rの途中あるいはキャビティのゲート部分に形成した通
路34aを棒状のヒーター34で開閉可能とし、該ヒー
ター34を作動させて周囲の樹脂を加熱溶融するととも
にヒーター34を後退させて通路34aを開くようにす
る形式のもの、さらに、図6に示すように、スプルーS
部分等を中心として樹脂流路35aを有するコマ35を
回転可能に設け、コマ35を回動させて樹脂流路35a
をランナーR1,R2のいずれかの方向に切換える形式
のものなど、金型10の構造、ランナーRの長さや太
さ、流路切換手段の設置位置、射出圧力等の条件に応じ
て適当な構造のものを採用することができ、図7に示す
ように、射出成形手段20のノズル26を所定のキャビ
ティC1,C2に対応させて分岐し、各分岐部26a,
26bに流路切換手段30a,30bをそれぞれ設ける
ようにしてもよい。なお、これらの流路切換手段の駆動
手段には、油圧,空圧,電動等、任意の駆動手段を用い
ればよい。
For example, as shown in FIG. 2, the flow path switching means 30a and 30b are provided with a cock 31 having a resin flow path 31a in the middle of a runner R, and the cock 31 is rotated by a predetermined angle. As a result, the resin flow path of the runner R is opened and closed, and as shown in FIG. 3, a retractable shield member 32 is disposed in the middle of the runner R.
Of the type in which the resin flow path of the runner R is opened and closed by moving the runner R, as shown in FIG. 4, a heating part 33 is provided in the middle of the runner R, and when the heating part 33 is in a non-operating state, Of a type in which the resin is cooled and solidified to close the resin flow path, and the heating unit 33 is operated to heat the resin in the runner R, thereby giving fluidity to the resin and allowing the resin to flow. As shown in FIG. 5, a passage 34a formed in the middle of the runner R or in the gate portion of the cavity can be opened and closed by a rod-shaped heater 34, and the heater 34 is operated to heat and melt the surrounding resin and retreat the heater 34. Of the type that allows the passage 34a to open, and as shown in FIG.
A top 35 having a resin flow path 35a is rotatably provided around a portion or the like, and the top 35 is rotated to rotate the resin flow path 35a.
Suitable for the structure of the mold 10, the length and thickness of the runner R, the installation position of the flow path switching means, the injection pressure, etc., such as the type of switching the runner R1 or R2 in any direction. As shown in FIG. 7, the nozzle 26 of the injection molding means 20 is branched so as to correspond to the predetermined cavities C1 and C2, and the branched portions 26a,
The flow path switching means 30a and 30b may be provided in 26b, respectively. Any drive means such as hydraulic pressure, pneumatic pressure, and electric drive may be used as the drive means for these flow path switching means.

【0015】次に、2個のキャビティC1,C2を有す
る金型10を用いて一型閉サイクルで複数の射出成形品
を製造する手順を説明する。まず、図8に示すように、
1回の射出成形工程CTにおいて、型閉後の第1段階T
1では、キャビティC1側の流路切換手段30aを開、
キャビティC2側の流路切換手段30bを閉として、あ
らかじめ設定されたキャビティC1における最適な射出
成形条件(例えば、圧力・スピード)に従って射出成形
手段20を作動させ、一方のキャビティC1に樹脂を射
出する。
Next, a procedure for producing a plurality of injection-molded products in one mold closing cycle using the mold 10 having the two cavities C1 and C2 will be described. First, as shown in FIG.
In the single injection molding process CT, the first stage T after mold closing
1, the flow path switching means 30a on the cavity C1 side is opened,
The flow path switching means 30b on the side of the cavity C2 is closed, and the injection molding means 20 is operated according to the optimum injection molding condition (for example, pressure / speed) in the cavity C1 set in advance to inject the resin into one cavity C1. .

【0016】このとき、長い冷却時間が必要な肉厚の厚
い製品のキャビティを先に射出を行うキャビティC1と
して選択することにより、一型閉サイクルにおけるバラ
ンスを取ることができ、効率よく射出成形を行うことが
できる。
At this time, by selecting a cavity of a thick product which requires a long cooling time as the cavity C1 for injection first, it is possible to achieve a balance in one mold closing cycle and efficiently perform injection molding. It can be carried out.

【0017】そして、キャビティC1への樹脂の射出と
キャビティC1内への樹脂の充填完了とを制御装置40
で把握したら、第2段階T2で射出成形手段20の射出
動作を一時停止するとともに、キャビティC1側の流路
切換手段30aを閉、キャビティC2側の流路切換手段
30bを開にそれぞれ切換える。
Then, the controller 40 controls the injection of the resin into the cavity C1 and the completion of the filling of the resin into the cavity C1.
Then, in the second stage T2, the injection operation of the injection molding means 20 is temporarily stopped, the flow path switching means 30a on the cavity C1 side is closed, and the flow path switching means 30b on the cavity C2 side is switched to open.

【0018】続いて、第3段階T3において、射出成形
手段20の射出動作を再開し、あらかじめ設定されたキ
ャビティC2における最適な射出成形条件に従って他方
のキャビティC2に樹脂を射出する。キャビティC2へ
の樹脂の射出及び充填が完了したら、第4段階T4で射
出成形手段20が次の射出動作のための樹脂の計量を行
うとともに、金型10を開いて射出成形品を取り出す。
この第4段階T4の時間は、射出成形品の冷却時間や射
出成形手段20の計量に要する時間等に応じて適当に設
定することができる。
Then, in the third step T3, the injection operation of the injection molding means 20 is restarted, and the resin is injected into the other cavity C2 according to the preset optimum injection molding conditions in the cavity C2. When the injection and the filling of the resin into the cavity C2 are completed, the injection molding means 20 measures the resin for the next injection operation at the fourth step T4, and the mold 10 is opened to take out the injection molded product.
The time of the fourth step T4 can be appropriately set according to the cooling time of the injection-molded product, the time required for measuring the injection-molding means 20, and the like.

【0019】このように、所定のキャビティC1,C2
毎に樹脂の射出を順次行って複数の射出成形品を製造す
ることにより、各キャビティC1,C2毎に確実に樹脂
を充填することができ、ショートショット等の品質不良
の発生を防止することができる。
In this way, the predetermined cavities C1 and C2 are
By sequentially injecting the resin for each to manufacture a plurality of injection-molded products, it is possible to reliably fill the resin into each of the cavities C1 and C2 and prevent the occurrence of quality defects such as short shots. it can.

【0020】さらに、各キャビティC1,C2毎に最適
な射出成形条件をそれぞれ設定しておくことにより、高
品質の製品を安定して製造することができる。また、先
に射出成形を行うキャビティC1の射出操業データを検
出することにより、射出動作の一時停止や流路の切換え
をタイミングよく行うことができ、不良品の発生を防止
するとともに、生産効率の向上も図れる。
Furthermore, by setting the optimum injection molding conditions for each of the cavities C1 and C2, a high quality product can be stably manufactured. Further, by detecting the injection operation data of the cavity C1 in which the injection molding is performed first, the injection operation can be temporarily stopped or the flow path can be switched at a timely timing, so that defective products can be prevented from occurring and production efficiency can be improved. It can be improved.

【0021】また、適当な流路切換手段を選定すること
により、射出成形手段20の射出動作を停止させること
なく樹脂流路を切換えて、所定のキャビティ毎に樹脂の
射出を順次行うことも可能である。
Further, by selecting an appropriate flow path switching means, the resin flow paths can be switched without stopping the injection operation of the injection molding means 20, and the resin can be sequentially injected into each predetermined cavity. Is.

【0022】なお、キャビティの数と流路切換手段との
関係は、前述のように、2個のキャビティC1,C2に
2個の流路切換手段30a,30bをそれぞれ対応させ
て設けるだけでなく、図9に示すように、3個のキャビ
ティC1,C2,C3に対して3個の流路切換手段30
a,30b,30cをそれぞれ設け、射出成形手段20
を途中で2回一時停止させて3段階で射出することもで
き、図10に示すように、3個のキャビティC1,C
2,C3の内、2個のキャビティC1,C2を一組とし
て2個の流路切換手段30a,30bを設け、キャビテ
ィC1,C2とキャビティC3との2段階で3個の射出
成形品を得るようにしてもよい。
The relationship between the number of cavities and the flow path switching means is not limited to the two flow path switching means 30a and 30b provided for the two cavities C1 and C2 as described above. As shown in FIG. 9, three flow path switching means 30 are provided for the three cavities C1, C2, C3.
a, 30b, 30c are provided respectively, and injection molding means 20 is provided.
It is also possible to suspend the injection twice in the middle and inject in three stages. As shown in FIG. 10, the three cavities C1 and C
Two of the cavities C1 and C2 of the two C2 and C3 are provided as a set and two flow path switching means 30a and 30b are provided, and three injection molded products are obtained in two stages of the cavities C1 and C2 and the cavity C3. You may do it.

【0023】また、図11に示すように、4個のキャビ
ティC1,C2,C3,C4に対して4個の流路切換手
段30a,30b,30c,30dをそれぞれ対応させ
て設けることにより4段階で射出を行ってもよく、図1
2に示すように、2個のキャビティC1,C2を一組、
キャビティC3,C4を一組とし、各組毎に流路切換手
段30a,30bを設けるようにしてもよい。さらに、
4個のキャビティを有する場合は、2個のキャビティを
一組として他の2個のキャビティを独立させ、3個の流
路切換手段を設ける形態や、3個のキャビティを一組と
して他の1個のキャビティを独立させる形態もあり、製
品の品種・サイズ等に応じて適宜な形態を選択すること
が可能である。同様に、5個以上のキャビティを有する
金型においても、各キャビティと流路切換手段との関係
は、任意に最適な状態で設定することが可能である。
Further, as shown in FIG. 11, four flow path switching means 30a, 30b, 30c, 30d are provided corresponding to the four cavities C1, C2, C3, C4, respectively, thereby providing four steps. Injection may be performed with
As shown in 2, a set of two cavities C1 and C2,
The cavities C3 and C4 may be set as one set, and the flow path switching means 30a and 30b may be provided for each set. further,
In the case of having four cavities, two cavities are set as one set and the other two cavities are made independent, and three flow path switching means are provided, or three cavities are set as one set. There is also a mode in which individual cavities are made independent, and an appropriate mode can be selected according to the product type, size, and the like. Similarly, even in a mold having five or more cavities, the relationship between each cavity and the flow path switching means can be set in an optimal state.

【0024】[0024]

【発明の効果】以上説明したように、本発明は、金型内
の複数のキャビティに順次樹脂の射出を繰り返して行う
ようにしたので、ショートショット等の品質不良の発生
を防止できる。また、各キャビティに最適な射出成形条
件を設定することで、品質の安定化が図れ、品質不良の
発生をより確実に防止でき、肉厚・形状等の差が著しい
製品をセット取りする場合でも、高品質の射出成形品を
安定して製造することができる。
As described above, according to the present invention, since the resin is sequentially and repeatedly injected into a plurality of cavities in the mold, it is possible to prevent the occurrence of quality defects such as short shots. In addition, by setting the optimum injection molding conditions for each cavity, quality can be stabilized, quality defects can be more reliably prevented, and even when products with significant differences in wall thickness, shape, etc. are set. It is possible to stably manufacture high quality injection molded products.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の射出成形品の製造装置の一例を示す
断面図である。
FIG. 1 is a cross-sectional view showing an example of an injection-molded article manufacturing apparatus of the present invention.

【図2】 流路切換手段の形態例を示す説明図である。FIG. 2 is an explanatory diagram showing a form example of a flow path switching unit.

【図3】 同じく流路切換手段の他の形態例を示す説明
図である。
FIG. 3 is an explanatory view showing another embodiment of the flow path switching means.

【図4】 同じく流路切換手段の他の形態例を示す説明
図である。
FIG. 4 is an explanatory view showing another embodiment of the flow path switching means.

【図5】 同じく流路切換手段の他の形態例を示す説明
図である。
FIG. 5 is an explanatory view showing another embodiment of the flow path switching means.

【図6】 同じく流路切換手段の他の形態例を示す説明
図である。
FIG. 6 is an explanatory view showing another embodiment of the flow path switching means.

【図7】 同じく流路切換手段の他の形態例を示す説明
図である。
FIG. 7 is an explanatory view showing another embodiment of the flow path switching means.

【図8】 射出成形条件の条件設定パターンの一例を示
す図である。
FIG. 8 is a diagram showing an example of a condition setting pattern of injection molding conditions.

【図9】 キャビティ及び流路切換手段の配置例を示す
説明図である。
FIG. 9 is an explanatory diagram showing an arrangement example of cavities and flow path switching means.

【図10】 キャビティ及び流路切換手段の他の配置例
を示す説明図である。
FIG. 10 is an explanatory view showing another arrangement example of the cavity and the flow path switching means.

【図11】 キャビティ及び流路切換手段の他の配置例
を示す説明図である。
FIG. 11 is an explanatory view showing another arrangement example of the cavity and the flow path switching means.

【図12】 キャビティ及び流路切換手段の他の配置例
を示す説明図である。
FIG. 12 is an explanatory view showing another arrangement example of the cavity and the flow path switching means.

【符号の説明】[Explanation of symbols]

10…金型、20…射出成形手段、21…シリンダー、
22…スクリュー、23…油圧ユニット、30a,30
b…流路切換手段、40…制御装置、C1,C2…キャ
ビティ、R…ランナー
10 ... Mold, 20 ... Injection molding means, 21 ... Cylinder,
22 ... Screw, 23 ... Hydraulic unit, 30a, 30
b ... flow path switching means, 40 ... control device, C1, C2 ... cavity, R ... runner

Claims (9)

【特許請求の範囲】[Claims] 【請求項1】 複数のキャビティを有する金型を用いて
一型閉サイクルで複数の射出成形品を製造するにあた
り、射出成形手段の一射出動作中に、各キャビティにそ
れぞれ接続した樹脂流路を切換え、所定のキャビティ毎
に樹脂の射出を順次行うことにより複数の射出成形品を
得ることを特徴とする射出成形品の製造方法。
1. When manufacturing a plurality of injection-molded articles in a mold closing cycle using a mold having a plurality of cavities, a resin flow path connected to each cavity is formed during one injection operation of the injection molding means. A method for manufacturing an injection-molded product, characterized in that a plurality of injection-molded products are obtained by switching and sequentially injecting a resin for each predetermined cavity.
【請求項2】 複数のキャビティを有する金型を用いて
一型閉サイクルで複数の射出成形品を製造するにあた
り、射出成形手段の一射出動作中に、該射出成形手段の
射出動作を一時的に所定回数停止させるとともに、該射
出動作の一時停止中に各キャビティにそれぞれ接続した
樹脂流路を切換え、所定のキャビティ毎に樹脂の射出を
順次行うことにより複数の射出成形品を得ることを特徴
とする射出成形品の製造方法。
2. When manufacturing a plurality of injection-molded articles in a mold closing cycle using a mold having a plurality of cavities, the injection operation of the injection-molding means is temporarily performed during one injection operation of the injection-molding means. A plurality of injection-molded products by stopping the resin a predetermined number of times and switching the resin flow paths connected to the respective cavities during the temporary suspension of the injection operation, and sequentially injecting the resin into each of the predetermined cavities. And a method of manufacturing an injection-molded article.
【請求項3】 前記所定のキャビティ毎に、あらかじめ
異なる射出成形条件を設定したことを特徴とする請求項
1又は2記載の射出成形品の製造方法。
3. The method for manufacturing an injection-molded article according to claim 1, wherein different injection molding conditions are set in advance for each of the predetermined cavities.
【請求項4】 前記所定のキャビティへの射出操業デー
タを検出し、該キャビティへの樹脂の射出とキャビティ
内への樹脂の充填完了とを把握した後、前記樹脂流路の
切換えを行うことを特徴とする請求項1又は2記載の射
出成形品の製造方法。
4. The resin flow path is switched after detecting the injection operation data into the predetermined cavity and grasping the injection of the resin into the cavity and the completion of the filling of the resin into the cavity. The method for producing an injection-molded article according to claim 1, which is characterized in that.
【請求項5】 複数のキャビティを有する金型を用いて
一型閉サイクルで複数の射出成形品を製造する装置であ
って、射出成形手段から前記複数のキャビティに接続し
た樹脂流路を、順次切換可能な流路切換手段を備えてい
ることを特徴とする射出成形品の製造装置。
5. An apparatus for manufacturing a plurality of injection-molded articles in a single mold closing cycle using a mold having a plurality of cavities, wherein resin flow paths connected to the plurality of cavities from an injection molding means are sequentially formed. An apparatus for manufacturing an injection-molded article, comprising a flow path switching means that can be switched.
【請求項6】 複数のキャビティを有する金型を用いて
一型閉サイクルで複数の射出成形品を製造する装置であ
って、射出動作を所定位置で一時停止可能な射出成形手
段と、前記複数のキャビティに接続した樹脂流路を順次
切換可能な流路切換手段とを備えたことを特徴とする射
出成形品の製造装置。
6. An apparatus for manufacturing a plurality of injection-molded articles in a single mold closing cycle using a mold having a plurality of cavities, the injection-molding means capable of temporarily stopping an injection operation at a predetermined position, and the plurality of injection-molding means. And a flow path switching means capable of sequentially switching the resin flow paths connected to the cavities.
【請求項7】 前記射出成形手段は、所定のキャビティ
への射出動作毎にあらかじめ異なる射出成形条件を設定
可能なものであることを特徴とする請求項5又は6記載
の射出成形品の製造装置。
7. The apparatus for manufacturing an injection-molded article according to claim 5, wherein the injection-molding means can set different injection-molding conditions in advance for each injection operation into a predetermined cavity. .
【請求項8】 前記流路切換手段は、所定のキャビティ
への樹脂の射出及びキャビティ内への樹脂の充填状態を
検出した操業データに基づいて流路切換作動を行うこと
を特徴とする請求項5記載の射出成形品の製造装置。
8. The flow path switching means performs the flow path switching operation based on operation data obtained by detecting the injection of resin into a predetermined cavity and the filling state of the resin into the cavity. 5. An apparatus for manufacturing an injection-molded article according to item 5.
【請求項9】 前記射出成形手段は、所定のキャビティ
への樹脂の射出及びキャビティ内への樹脂の充填状態を
検出した操業データに基づいて射出動作を一時停止し、
前記流路切換手段は、該射出成形手段の一時停止時に流
路切換作動を行うことを特徴とする請求項6記載の射出
成形品の製造装置。
9. The injection molding means temporarily suspends the injection operation based on operation data obtained by detecting the injection of resin into a predetermined cavity and the filling state of resin into the cavity,
The apparatus for manufacturing an injection-molded article according to claim 6, wherein the flow path switching means performs a flow path switching operation when the injection molding means is temporarily stopped.
JP4877996A 1996-03-06 1996-03-06 Method and apparatus for producing injection-molded product Pending JPH09239770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4877996A JPH09239770A (en) 1996-03-06 1996-03-06 Method and apparatus for producing injection-molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4877996A JPH09239770A (en) 1996-03-06 1996-03-06 Method and apparatus for producing injection-molded product

Publications (1)

Publication Number Publication Date
JPH09239770A true JPH09239770A (en) 1997-09-16

Family

ID=12812748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4877996A Pending JPH09239770A (en) 1996-03-06 1996-03-06 Method and apparatus for producing injection-molded product

Country Status (1)

Country Link
JP (1) JPH09239770A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004330480A (en) * 2003-05-01 2004-11-25 Japan Steel Works Ltd:The Injection molding method
JP2006168066A (en) * 2004-12-14 2006-06-29 Toshiba Mach Co Ltd Injection molding machine and injection molding method
JP2010274497A (en) * 2009-05-28 2010-12-09 Ube Machinery Corporation Ltd Injection molding method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004330480A (en) * 2003-05-01 2004-11-25 Japan Steel Works Ltd:The Injection molding method
JP2006168066A (en) * 2004-12-14 2006-06-29 Toshiba Mach Co Ltd Injection molding machine and injection molding method
JP4579667B2 (en) * 2004-12-14 2010-11-10 東芝機械株式会社 Injection molding machine and injection molding method
JP2010274497A (en) * 2009-05-28 2010-12-09 Ube Machinery Corporation Ltd Injection molding method

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