JP4438057B2 - Manufacturing method of molded products - Google Patents

Manufacturing method of molded products Download PDF

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JP4438057B2
JP4438057B2 JP2004193483A JP2004193483A JP4438057B2 JP 4438057 B2 JP4438057 B2 JP 4438057B2 JP 2004193483 A JP2004193483 A JP 2004193483A JP 2004193483 A JP2004193483 A JP 2004193483A JP 4438057 B2 JP4438057 B2 JP 4438057B2
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injection
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JP2006015525A5 (en
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健四郎 阿部
浩介 西野
寿一 森永
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キヤノン株式会社
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本発明は、射出成形機で成形した成形品を自動でストッカに蓄溜する工程を有する成形品の製造方法に関し、特に組立機と射出成形機を連動させた成形品の製造方法に関するものである。   The present invention relates to a method of manufacturing a molded product having a process of automatically storing a molded product molded by an injection molding machine in a stocker, and more particularly to a method of manufacturing a molded product by linking an assembly machine and an injection molding machine. .
従来の組立機と射出成形機を連動させた成形品の製造方法としては、組立機で組立てられた量、または組立に使用された量、または射出成形機から排出された成形品をストッカに蓄溜された量、または搬送された量とストッカに蓄溜された量を検知して、射出成形機の冷却時間及び/または中間時間を安定成形条件範囲内で、伸縮させて調整する方法が特許文献1に記載されている。これは図9に示すように、成形機に取り付けられた金型を開いた状態で自動成形をスタートさせ、金型を閉じる型閉工程151、型閉後は低圧で金型を締める低圧型締工程152、次に成形時の射出圧力に対して金型が開かないよう高圧で型締めする高圧型締工程153、次に溶融樹脂を金型に充填させる射出工程154、射出後に充填した樹脂を保持ならびに加圧する保圧工程155、充填した樹脂を冷却させる冷却工程156、次の成形のための樹脂を計量するため、冷却工程と同時に開始し並行動作する計量工程161、冷却工程完了後成形品を取出す型開工程157、成形品を金型から取出すエジェクタ工程158とから構成される。通常成形サイクルに対し冷却時間及び/または中間時間を伸縮させ組立機への成形品の供給を遅らせるまたは早める事で供給過剰を防止する生産システムで、この通常動作に対して、従来例の冷却時間によるサイクル延長である図9のBでは、一定量ストッカに成形品が蓄溜した時は、ストッカからの信号によって冷却工程156の後に、更に冷却時間延長工程162が追加されるように構成され、型開157の時間が遅くなり、成形サイクルが延長される。また、従来例の中間時間によるサイクル延長である図9のCでは、一定量ストッカに成形品が蓄溜した時は、ストッカからの信号によって、エジエクタ工程158のエジェクタ戻り工程158cと待機工程159が終了した後に、中間時間延長工程163が追加されるように構成され、型閉工程151までの時間が遅くなり、成形サイクルが延長される。更に図9のB、Cの従来例では冷却時間延長工程162及び中間時間延長工程163にて成形サイクルを延長しても、計量工程161は冷却工程156が開始すると同時並行に動作するように構成されている。   As a method of manufacturing a molded product in which a conventional assembly machine and an injection molding machine are linked, the amount assembled by the assembly machine, the amount used for assembly, or the molded product discharged from the injection molding machine is stored in the stocker. Patented is a method of adjusting the cooling time and / or intermediate time of an injection molding machine within the range of stable molding conditions by detecting the amount stored, or the amount transported and the amount stored in the stocker. It is described in Document 1. As shown in FIG. 9, the automatic molding is started with the mold attached to the molding machine opened, the mold closing process 151 for closing the mold, and the mold is closed at a low pressure after the mold is closed. Step 152, Next, a high pressure clamping step 153 for clamping the mold at a high pressure so that the mold does not open with respect to the injection pressure at the time of molding, then an injection step 154 for filling the mold with molten resin, and a resin filled after injection Holding / pressurizing step 155 for holding and pressurizing, cooling step 156 for cooling the filled resin, weighing step 161 starting simultaneously with the cooling step to measure the resin for the next molding, and molding after completion of the cooling step A mold opening process 157 for removing the molded product, and an ejector process 158 for removing the molded product from the mold. This is a production system that prevents oversupply by delaying or speeding up the supply of molded products to the assembly machine by extending or decreasing the cooling time and / or intermediate time with respect to the normal molding cycle. In FIG. 9B, which is a cycle extension according to FIG. 9, when the molded product is accumulated in a certain amount of stocker, a cooling time extension step 162 is further added after the cooling step 156 by a signal from the stocker, The mold opening time 157 is delayed and the molding cycle is extended. Further, in FIG. 9C, which is a cycle extension by the intermediate time of the conventional example, when the molded product is accumulated in a certain amount of stocker, an ejector return process 158c and a standby process 159 of the ejector process 158 are performed by a signal from the stocker. After the completion, an intermediate time extension step 163 is added, the time until the mold closing step 151 is delayed, and the molding cycle is extended. Further, in the conventional example of FIGS. 9B and 9C, even if the molding cycle is extended in the cooling time extension step 162 and the intermediate time extension step 163, the measuring step 161 is configured to operate simultaneously when the cooling step 156 starts. Has been.
また、特許文献2に記載されているような成形機の加熱筒と油圧ポンプを起動遅延タイマによって、成形機を自動で立上げる装置や、特許文献3に記載されているような成形開始後の成形条件安定域まで成形時の射出圧力制御により成形して自動で成形を立上げる方法がある。
特公平7−121547号公報 特登録02971653号公報 特開平11−58480号公報
In addition, a heating cylinder and a hydraulic pump of a molding machine as described in Patent Document 2 are automatically started up by a start delay timer, and a molding machine as described in Patent Document 3 is started after the start of molding. There is a method of automatically starting molding by molding by injection pressure control during molding up to a molding condition stable region.
Japanese Examined Patent Publication No. 7-121547 Japanese Patent Registration No. 02971653 JP-A-11-58480
しかしながら、組立機が異常停止した場合、短時間であれば対応可能であるが、長時間組立機が停止した場合や成形品のサイズが大きくなるほど、ストッカに蓄溜できる数量を増設する事も難しく、ストッカが満杯になれば射出成形機の自動動作を停止させることになる。   However, if the assembly machine stops abnormally, it can be handled for a short time, but if the assembly machine stops for a long time or the size of the molded product increases, it is difficult to increase the quantity that can be stored in the stocker. If the stocker is full, the automatic operation of the injection molding machine is stopped.
射出成形機の自動動作が停止した場合、スクリュ内に滞留している熱劣化した樹脂を排出する作業の後、成形オペレーターが安全な成形条件に変更し、成形品の品質を確認して良品条件に調整してから、組立機への成形品の供給を再開させる必要がある。   When the automatic operation of the injection molding machine stops, the molding operator changes to safe molding conditions after discharging the heat-degraded resin staying in the screw, and confirms the quality of the molded product. It is necessary to restart the supply of the molded product to the assembling machine after the adjustment.
組立機で組立てられた量、または組立に使用された量、または射出成形機から排出された成形品をストッカに蓄溜された量、または搬送された量とストッカに蓄溜された量を検知して、予め決められた安定成形条件を満たす範囲内で冷却時間及び/または中間時間を伸縮させるには、成形品の量を検知する手段が複雑になるうえ、検知数量や射出成形機の成形サイクルを変更するタイミングを制御する方法が複雑になる。   Detects the amount assembled by the assembly machine, the amount used for assembly, the amount of molded products discharged from the injection molding machine, the amount stored in the stocker, or the amount transported and the amount stored in the stocker Thus, in order to expand and contract the cooling time and / or intermediate time within the range satisfying the predetermined stable molding condition, the means for detecting the amount of the molded product becomes complicated, and the detected quantity and molding of the injection molding machine The method for controlling the timing of changing the cycle becomes complicated.
本出願に係る発明の目的は、組立機の異常停止により生ずる、成形品のストッカへの蓄溜数に応じて、射出成形機から成形される成形品の数量を調整することができる成形品の製造方法を提供することにある。   The object of the invention according to the present application is to provide a molded product capable of adjusting the number of molded products molded from an injection molding machine in accordance with the number of molded products stored in the stocker caused by an abnormal stop of the assembly machine. It is to provide a manufacturing method.
上記課題を解決するために、本発明の成形品の製造方法は、射出成形機で成形品を成形し、該成形品を次の工程に搬送するまでストッカにて蓄溜する生産システムを用いた成形品の製造方法であって、前記ストッカに蓄溜されている前記成形品の数量が第一の所定量になった時、前記射出成形機の成形を一時停止し、前記ストッカに蓄溜されている前記成形品の数量が前記第一の所定量よりも小さい第二の所定量になった時、前記射出成形機を再稼動することを特徴とする。 In order to solve the above problems, the manufacturing method of a molded product of the present invention uses a production system in which a molded product is molded by an injection molding machine and stored in a stocker until the molded product is conveyed to the next step . A method of manufacturing a molded product, wherein when the quantity of the molded product stored in the stocker reaches a first predetermined amount , the molding of the injection molding machine is temporarily stopped and stored in the stocker. The injection molding machine is restarted when the quantity of the molded product is a second predetermined amount smaller than the first predetermined amount .
本出願に係る発明によれば、組立機の異常停止時間が長く、射出成形した成形品をストックするストッカが一定数量(例えばストッカに蓄溜可能な略最大数量)になった時、成形機の自動動作を自動的に一時停止させることによって、ストッカ数を必要以上に増設する必要が無いため、ストッカサイズのコンパクト化ができる。また人の手を介さずとも、不測の事態にも柔軟に対応できるようになる。   According to the invention of the present application, when the abnormal stop time of the assembly machine is long and the stocker for stocking the injection-molded molded product reaches a certain quantity (for example, the substantially maximum quantity that can be stored in the stocker), By automatically stopping the automatic operation, it is not necessary to increase the number of stockers more than necessary, so the stocker size can be reduced. In addition, it will be possible to respond flexibly to unforeseen circumstances without human intervention.
以下、本発明を実施するための最良の形態を図面を用いて説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.
図5は本発明の成形品の製造方法に用いられる射出成形機と組立機と取出し機の概略図である。図5において、70は射出成形機であり、溶融樹脂を射出計量するため射出側は、駆動源である可塑化装置80と樹脂を溶融、計量、射出するシリンダ81で構成される。金型を開閉させ型締めする型締め側は、固定金型83を取り付け固定する固定プラテン82と可動金型84を取り付け固定する可動プラテン85と可動プラテンを駆動させる駆動機構(不図示)から構成される。成形品Sを可動金型84から取出すために可動側型締め機構内に設置されたエジェクタ突出し機構(不図示)と可動金型84に構成したエジェクタが連動するように構成されている。   FIG. 5 is a schematic view of an injection molding machine, an assembly machine, and a take-out machine used in the method for producing a molded product of the present invention. In FIG. 5, reference numeral 70 denotes an injection molding machine. The injection side is configured by a plasticizing device 80 as a driving source and a cylinder 81 for melting, measuring, and injecting resin in order to inject and measure molten resin. The mold clamping side for opening and closing the mold and clamping the mold is composed of a fixed platen 82 for mounting and fixing the fixed mold 83, a movable platen 85 for mounting and fixing the movable mold 84, and a drive mechanism (not shown) for driving the movable platen. Is done. In order to take out the molded product S from the movable mold 84, an ejector protruding mechanism (not shown) installed in the movable-side mold clamping mechanism and an ejector configured in the movable mold 84 are configured to interlock with each other.
次に取出し機71について説明する。フレーム90は射出成形機70の固定プラテン82及び床に固定取り付けされる。取出し機71は射出成形機70に対し平行方向に駆動する駆動レール91と直交方向に駆動する駆動レール92と上下方向に駆動する駆動レール93と成形品Sをチャックするチャック機構94により構成され、各レール軸は不図示のボールネジとサーボモータにより駆動する機構から構成されている。   Next, the unloader 71 will be described. The frame 90 is fixedly attached to the fixed platen 82 and the floor of the injection molding machine 70. The take-out machine 71 is composed of a drive rail 91 that is driven in parallel to the injection molding machine 70, a drive rail 92 that is driven in an orthogonal direction, a drive rail 93 that is driven in the vertical direction, and a chuck mechanism 94 that chucks the molded product S. Each rail shaft is composed of a ball screw and a mechanism driven by a servo motor (not shown).
ストッカ72は射出成形機71の型締め装置側の上面もしくは側面側に固定取り付けし、ストッカ72には成形品Sを取り置きできる位置決め機構がS1からS18まで(今回の説明図ではS18までであるが、実際は必要数に応じたストッカ数とする)設置する。ストッカは平置き形式だけでなく縦型、もしくは直線的に形成しても良い。   The stocker 72 is fixedly attached to the upper surface or the side surface of the injection molding machine 71 on the mold clamping device side, and the stocker 72 has a positioning mechanism capable of retaining the molded product S from S1 to S18 (in this explanatory diagram, up to S18). Actually, the number of stockers is set according to the required number). The stocker may be formed not only in a flat type but also in a vertical type or linearly.
73は組立機であり、ストッカ72の近傍に設置する。   Reference numeral 73 denotes an assembly machine, which is installed in the vicinity of the stocker 72.
次に通常の成形サイクル時の動作について、上記構成および図3の通常成形サイクル動作図を参照しながら説明する。以下この通常成形サイクルをAサイクルと呼ぶこととする。   Next, the operation during the normal molding cycle will be described with reference to the above-described configuration and the normal molding cycle operation diagram of FIG. Hereinafter, this normal molding cycle is referred to as A cycle.
射出成形機70に取り付けた固定金型83と可動金型84が型閉動作によりにより金型が閉じる(型閉工程51)。金型が閉じた後、低圧状態で型締され(低圧型締工程52)、次に更に高い圧力で金型を締め付ける(高圧型締工程53)。この状態を保持した状態で射出シリンダ81から溶融樹脂を金型内のキャビティに充填し(射出工程54)、保圧(保圧工程55)、冷却(冷却工程56)により溶融樹脂が固化後、可動プラテン85の駆動機構により可動金型84を後退させると型締めは解除され、金型を開く(型開工程57)。型開の後、可動側型締め機構内のエジェクタ突出し機構(不図示)により金型のエジェクタを突出動作させると(突出58a)、成形品Sが可動金型84から取出され、エジェクタ突き出し状態を保持している間(保持58b)に、取出し機71のチャック機構94によって、成形品Sを取出す。成形品Sが金型から取出されるとエジェクタが後退し(戻り58c)、次の成形サイクル開始まで準備状態(待機59)になる。突出58a、保持58b、戻り58cを合せた動作をエジェクタ工程58と言う。一般的にはエジェクタ工程58と待機59を合せた型開工程57完了から型閉工程51開始までの間の時間を中間時間60と言う。また、通常サイクルにおいては、冷却(冷却工程56)の開始と同時に可塑化装置80によって、シリンダ81では次の成形のための計量動作(計量61)が開始し、スクリュ(不図示)位置が設定値に達し計量が完了すると停止するように構成されている。   The fixed mold 83 and the movable mold 84 attached to the injection molding machine 70 are closed by a mold closing operation (mold closing step 51). After the mold is closed, the mold is clamped in a low pressure state (low pressure mold clamping process 52), and then the mold is clamped at a higher pressure (high pressure mold clamping process 53). In this state, the molten resin is filled into the mold cavity from the injection cylinder 81 (injection step 54), and after the molten resin is solidified by holding pressure (holding step 55) and cooling (cooling step 56), When the movable mold 84 is moved backward by the drive mechanism of the movable platen 85, the mold clamping is released and the mold is opened (mold opening step 57). After the mold is opened, when the mold ejector is moved by the ejector ejecting mechanism (not shown) in the movable side clamping mechanism (projection 58a), the molded product S is taken out from the movable mold 84, and the ejector is ejected. While being held (holding 58 b), the molded product S is taken out by the chuck mechanism 94 of the take-out machine 71. When the molded product S is taken out from the mold, the ejector moves backward (return 58c) and enters a ready state (standby 59) until the next molding cycle starts. The operation combining the protrusion 58a, the holding 58b, and the return 58c is referred to as an ejector process 58. Generally, the time from the completion of the mold opening process 57 including the ejector process 58 and the standby 59 to the start of the mold closing process 51 is referred to as an intermediate time 60. Further, in the normal cycle, simultaneously with the start of cooling (cooling step 56), the plasticizing device 80 starts a measuring operation (measuring 61) for the next molding in the cylinder 81, and the screw (not shown) position is set. It is configured to stop when the value is reached and weighing is complete.
可動金型84から、取出し機71のチャック機構94によって取出された成形品Sは、各レール軸91、92、93上を移動し、ストッカ72の指定の場所に移動後チャック機構94を開放し蓄溜される。ストッカ72に一定数量の成形品Sが蓄溜した後、取出し機71は組立機73からの要求信号を受けると、初めにストッカ72に蓄溜された成形品S1上に取出し機71が移動し、チャック機構94により成形品S1をチャックし、組立機73の成形品の投入口であるSKの位置に搬送後チャック機構94を開放し成形品S1を組立機に排出する。   The molded product S taken out from the movable mold 84 by the chuck mechanism 94 of the take-out machine 71 moves on the rail shafts 91, 92, 93, moves to the designated location of the stocker 72, and then opens the chuck mechanism 94. Accumulated. After a certain amount of molded product S is accumulated in the stocker 72, when the take-out machine 71 receives a request signal from the assembly machine 73, the take-out machine 71 moves on the molded product S1 first accumulated in the stocker 72. Then, the molded product S1 is chucked by the chuck mechanism 94, and the chuck mechanism 94 is opened after the conveyance to the position of SK, which is the input port of the molded product of the assembly machine 73, and the molded product S1 is discharged to the assembly machine.
このように、通常はストッカ上の蓄溜数は成形機からの供給と組立機への排出のバランスが取れて一定量で安定している。しかし、何らかの理由で組立機に異常が発生し組立機への排出が止まってしまうと、ストッカ上の成形品はどんどん溜まってしまう。このような場合、前述した図3の通常成形サイクルであるAサイクルに対して、成形サイクルを延長することによってストッカ72への成形品の供給速度を遅らせることができる。図4には成形サイクルを延長して成形を行う一実施形態であるDサイクルと、他の実施形態であるEサイクルの動作図をそれぞれ示す。   As described above, normally, the number of accumulations on the stocker is stable at a constant amount with a balance between supply from the molding machine and discharge to the assembly machine. However, if an abnormality occurs in the assembly machine for some reason and the discharge to the assembly machine stops, the molded products on the stocker accumulate more and more. In such a case, the supply speed of the molded product to the stocker 72 can be delayed by extending the molding cycle with respect to the A cycle which is the normal molding cycle of FIG. 3 described above. FIG. 4 shows operation diagrams of a D cycle which is one embodiment for performing molding by extending a molding cycle and an E cycle which is another embodiment.
まずDサイクルにおいては、外部から信号が入力された時は、高圧型締工程53の後で射出工程54の前の射出遅延工程64が追加されるように構成する。その結果、射出遅延工程64に設定された時間分だけ成形サイクルが長くなる。金型を閉じた状態で遅延動作を行うことによって、金型温度が放熱によって温度変化することを軽減させる効果がある。   First, in the D cycle, when a signal is input from the outside, an injection delay process 64 before the injection process 54 is added after the high-pressure mold clamping process 53. As a result, the molding cycle becomes longer by the time set in the injection delay process 64. By performing the delay operation with the mold closed, there is an effect of reducing the temperature change of the mold due to heat radiation.
また、Eサイクルにおいては、外部から信号が入力された時は、低圧型締工程52の後で高圧型締工程53の前に高圧型締遅延工程66を構成しても良い。その結果、高圧型締遅延工程66に設定された時間分だけ成形サイクルが長くなる。高圧型締工程53後に遅延を行うDサイクルに対し、低圧型締工程52で遅延を行う事で、遅延動作時間中も低圧で保持するため、金型及び成形機にかかる負荷の低減により耐久の向上やエネルギーのムダが防止できる。   Further, in the E cycle, when a signal is input from the outside, a high pressure mold clamping delay process 66 may be configured after the low pressure mold clamping process 52 and before the high pressure mold clamping process 53. As a result, the molding cycle becomes longer by the time set in the high-pressure mold clamping delay process 66. The D cycle, which is delayed after the high-pressure mold clamping process 53, is delayed at the low-pressure mold clamping process 52 so that it is maintained at a low pressure during the delay operation time. Improvement and energy waste can be prevented.
更に、Dサイクル、Eサイクルとも、冷却工程56開始と同時に開始する計量工程61も、射出遅延工程64及び高圧型締遅延工程66の時間と同一時間分だけ遅らせ計量遅延工程65が動作するので、射出遅延工程64及び高圧型締遅延工程66設定された時間分だけ遅れて計量工程61が開始するように構成する。射出遅延工程64及び高圧型締遅延工程66を行うサイクルと行わないサイクルのどちらの時でも、計量工程61が完了してから射出工程54までの時間を合せる事ができる。これにより計量工程61で発生したせん段発熱の状態を安定させる事ができるので射出工程54の条件が安定する。   Further, the metering process 61 that starts simultaneously with the start of the cooling process 56 in both the D cycle and the E cycle is also delayed by the same time as the time of the injection delay process 64 and the high-pressure mold clamping delay process 66, and the metering delay process 65 operates. An injection delay process 64 and a high-pressure mold clamping delay process 66 are configured so that the metering process 61 starts with a delay of a set time. The time from the completion of the metering step 61 to the injection step 54 can be matched at either the cycle in which the injection delay step 64 and the high-pressure mold clamping delay step 66 are performed or not. As a result, the state of the step heat generated in the weighing step 61 can be stabilized, so that the conditions of the injection step 54 are stabilized.
更に延長の時間を通常成形サイクルAサイクルの整数倍にすることによってストッカに蓄積された数量の検出やサイクル延長するためのタイミングが明確になる。特に、金型から成形品を取出した後に二次加工等の工程を経てストッカに蓄溜させたり、ストッカから二次加工等の工程を経て組立機に成形品を排出させる場合、二次加工等の工程でも標準サイクルは決まっている装置が一般的なので、二次加工等の工程や組立機との1サイクル動作タイミングが調整しやすくなるので生産システムの同期が取りやすくかつサイクル延長や通常サイクルへの切換制御が簡素化できる。   Furthermore, by making the extension time an integral multiple of the normal molding cycle A, the timing for detecting the quantity accumulated in the stocker and extending the cycle becomes clear. In particular, when taking out the molded product from the mold and storing it in the stocker through the secondary processing, etc., or discharging the molded product to the assembly machine through the secondary processing from the stocker, etc. Since the standard cycle is generally used in this process, it is easy to adjust the timing of one cycle operation with the assembly process and the process of secondary processing, etc., making it easy to synchronize the production system and extending the cycle to the normal cycle. Switching control can be simplified.
次に本発明の成形品の製造方法に用いられる射出成形機と組立機と取出し機の関係を示すブロック図である図1を参照してさらに詳しく動作説明を行う。ストッカ72に蓄溜されている成形品の数量およびそれぞれの成形品がストッカ72に蓄溜されている時間は、取出し機71のカウンタCPU71bによってカウントされ、その値はCPU71aに記憶される。   Next, the operation will be described in more detail with reference to FIG. 1 which is a block diagram showing the relationship among an injection molding machine, an assembling machine, and a take-out machine used in the method for manufacturing a molded article of the present invention. The number of molded products stored in the stocker 72 and the time during which each molded product is stored in the stocker 72 are counted by the counter CPU 71b of the unloader 71, and the value is stored in the CPU 71a.
取出し機71のCPU71aで射出成形機70に成形可能との信号71cを出力すると射出成形機70は全自動成形を開始し、射出成形機のCPU70aが取出し機71のCPU71aに自動成形開始信号70bを出力すると、成形機70と取出し機71は連動動作になる。成形品Sが成形され金型が型開したら取出し機71が動作しチャック機構94で成形品Sを保持後取出し、ストッカ72のS1位置に成形品Sを置く。次に成形された成形品も同様に取出し機71が動作しチャック機構94で成形品Sを取出し、ストッカ72のS2位置に成形品Sを置く。更に成形品Sが成形されるごとに、ストッカ72のS3、S4、S5‥‥と順次成形品を並べて置く。   When the CPU 71a of the take-out machine 71 outputs a signal 71c indicating that molding is possible to the injection molding machine 70, the injection molding machine 70 starts fully automatic molding, and the CPU 70a of the injection molding machine sends an automatic molding start signal 70b to the CPU 71a of the take-out machine 71. When output, the molding machine 70 and the take-out machine 71 are linked. When the molded product S is molded and the mold is opened, the take-out machine 71 operates to hold the molded product S by the chuck mechanism 94 and take it out. The molded product S is placed at the S1 position of the stocker 72. Next, the take-out machine 71 operates in the same manner for the molded product thus formed, the molded product S is taken out by the chuck mechanism 94, and the molded product S is placed at the S2 position of the stocker 72. Further, each time the molded product S is molded, the molded products are sequentially arranged in the order of S3, S4, S5,.
ストッカ72に置かれた数量、もしくはストッカ72に置かれてから一定時間は、冷却個数もしくは冷却時間としてストッカ72に留置かれるようにCPU71aに記憶させておく。このようにすることで、成形直後に高温で取出された成形品を一定時間以上ストッカ72上で冷却させる事ができる。一定個数もしくは一定時間を経過した成形品Sがあるとき、取出し機71のCPU71aから組立機73に対し、成形品供給可能信号71dを出力する。組立機73のセンサ73bにより成形品がSKの位置にあるかどうかを検出し、成形品が無いときは、組立機73のCPU73aから取出し機71のCPU71aに対し成形品供給の要求信号73cが出力される。この要求信号73cを取出し機71のCPU71aが受け取ると、チャック機構94をストッカに蓄溜されている最も古い成形品S1の位置に移動させ、チャック機構94で成形品S1を保持後取出し、組立機73の成形品を置く位置に移動させた後、チャック機構94を開放しSKの位置に成形品を排出する。更に組立機73のSKの位置に成形品がなくなると、要求信号73cが出力され、取出し機のCPU71aが要求信号73cを受け取ると、次に古い成形品S2から成形品を取出し、組立機73のSKの位置に排出する。更に要求信号73aが取出し機71のCPU71aに入力されるごとに、ストッカ72のS3、S4、S5‥‥とストッカ72に蓄溜された順番に取出し組立機73のSKの位置に成形品を移動排出する。一定個数もしくは一定時間を経過した成形品Sが無い時は、組立機73からの要求信号73cが出力されても組立機73への成形品の移動排出は行われないように構成されている。図7および図8にはストッカ蓄溜時の配置図を示し、成形開始時は、取出し機71はストッカ72に蓄溜されている位置を記憶しており、ストッカ72に蓄溜されている位置が図7に示すようにS5〜S8までとすると、成形再開時はS9から順に蓄溜する。組立機73からの排出要求があると、冷却個数が例えば4個と仮定すれば、S9に成形品が供給されるまでは組立機73からの要求信号があっても組立機への排出は行われないように設定されている。図8でストッカ72上に成形品がS9、S10、S11と蓄積された後、組立機73からの要求信号があると、ストッカ72上の数が4個を越えているので、初めに蓄積されたS5から順に組立機73に排出されるように設定されている。   The CPU 71a stores the quantity placed in the stocker 72, or a predetermined time after being placed in the stocker 72, so that it is kept in the stocker 72 as the cooling number or cooling time. By doing in this way, the molded product taken out at high temperature immediately after shaping | molding can be cooled on the stocker 72 for a fixed time or more. When there is a molded product S for which a certain number or a certain time has elapsed, the CPU 71a of the take-out machine 71 outputs a molded product supply enable signal 71d to the assembling machine 73. The sensor 73b of the assembling machine 73 detects whether or not the molded product is at the SK position. When there is no molded product, the CPU 73a of the assembling machine 73 outputs a request signal 73c for supplying the molded product to the CPU 71a of the take-out machine 71. Is done. When the CPU 71a of the take-out machine 71 receives the request signal 73c, the chuck mechanism 94 is moved to the position of the oldest molded product S1 stored in the stocker, and the molded product S1 is held by the chuck mechanism 94 and taken out. Then, the chuck mechanism 94 is opened and the molded product is discharged to the SK position. Further, when there is no molded product at the SK position of the assembling machine 73, a request signal 73c is output. When the CPU 71a of the take-out machine receives the request signal 73c, the next old molded product S2 is taken out and the assembling machine 73 Discharge to SK position. Further, each time the request signal 73a is input to the CPU 71a of the take-out machine 71, the molded product is moved to the SK position of the take-out assembly machine 73 in the order stored in the stocker 72 in S3, S4, S5,. Discharge. When there is no molded product S for which a certain number or a certain time has passed, the molded product is not moved and discharged to the assembling machine 73 even if the request signal 73c is output from the assembling machine 73. FIGS. 7 and 8 show layout diagrams during stocker accumulation. At the start of molding, the unloader 71 stores the position accumulated in the stocker 72, and the position accumulated in the stocker 72. As shown in FIG. 7, when S5 to S8 are set, accumulation is sequentially performed from S9 when molding is resumed. If there is a discharge request from the assembly machine 73, assuming that the number of cooling is 4, for example, the discharge to the assembly machine is not performed even if there is a request signal from the assembly machine 73 until the molded product is supplied to S9. It is set not to be broken. In FIG. 8, after the molded products are accumulated on the stocker 72 as S9, S10, and S11, if there is a request signal from the assembling machine 73, the number on the stocker 72 exceeds 4, so it is accumulated first. It is set to be discharged to the assembly machine 73 in order from S5.
以上を踏まえて、本発明の成形品の製造方法について、図2のフローチャートおよび図5を参照しながら詳細に説明する。   Based on the above, the method for producing a molded product of the present invention will be described in detail with reference to the flowchart of FIG. 2 and FIG.
まずあらかじめ各数値を事前に設定しておく。   First, each numerical value is set in advance.
第一の所定量(以下N2とする)の設定は成形機70のサイクルと組立機73のサイクルから、組立機73が異常停止する可能性のある時間より多少長めの時間で成形が停止しなくて良くストッカに蓄溜できる数量及び、ストッカ72の設置スペースを考慮して設定され、ストッカに蓄溜可能な成形品の略最大数量とする。   The first predetermined amount (hereinafter referred to as N2) is set so that the molding does not stop in a time slightly longer than the time when the assembly machine 73 may abnormally stop from the cycle of the molding machine 70 and the cycle of the assembly machine 73. It is set in consideration of the quantity that can be stored in the stocker and the installation space of the stocker 72, and is the substantially maximum quantity of molded products that can be stored in the stocker.
第二の所定量(以下N1とする)の設定は、ストッカ72に蓄溜されたN2の状態から組立機73が再開した時、成形が自動で再稼動後成形品の品質が安定するまでリジェクトし、良品が成形されるまで組立機73に供給され、ストッカ72に蓄溜数が不足する事が無い数に設定される。言い換えればN1は、射出成形機が再稼動してから良品が成形されるまでの間に、前記ストッカから組立機に搬送される成形品の数量より大きい数とする。   The second predetermined amount (hereinafter referred to as N1) is set so that when the assembling machine 73 resumes from the state of N2 stored in the stocker 72, the molding is automatically restarted and the molding is rejected until the quality of the molded product is stabilized. Then, it is supplied to the assembling machine 73 until a non-defective product is formed, and is set to a number that does not cause the stocker 72 to have a shortage of storage. In other words, N1 is set to a number larger than the number of molded products conveyed from the stocker to the assembly machine after the injection molding machine is restarted until a good product is molded.
また、成形機の自動一時停止時間Tは、使用する樹脂により異なるが、成形機70のシリンダ内に溶樹脂が滞留しても、次の成形品の品質に多少不具合があっても自動で再稼動後成形品の品質が安定するまでリジェクトすれば良品を成形できる時間に設定する。   Further, the automatic pause time T of the molding machine varies depending on the resin used, but even if the molten resin stays in the cylinder of the molding machine 70, it is automatically restarted even if there is some defect in the quality of the next molded product. The time is set so that a good product can be molded if rejected until the quality of the molded product becomes stable after operation.
通常の成形状態の場合について説明する。   The case of a normal molding state will be described.
射出成形機70の運転モードが全自動運転か、半自動運転でスタート11の信号がONすると、初めに型閉工程12で可動金型84が閉じた後、低圧型締工程13Aで固定金型83と可動金型84が低圧で締まり、高圧型締工程13Bでは、射出シリンダ81から溶融樹脂を金型内のキャビティに射出54をしたときの金型内部への注入圧力よりも高い圧力で型締めする。   When the operation mode of the injection molding machine 70 is fully automatic operation or semi-automatic operation and the signal of start 11 is turned ON, the movable mold 84 is first closed in the mold closing process 12 and then the fixed mold 83 in the low pressure mold clamping process 13A. The movable mold 84 is clamped at a low pressure, and in the high pressure mold clamping process 13B, the mold is clamped at a pressure higher than the injection pressure into the mold when the molten resin is injected 54 from the injection cylinder 81 into the cavity in the mold. To do.
通常成形の場合は「ストッカ数がN1以上か?」14はNOであるので、射出・保圧工程17に進み、射出・保圧工程終了後に「ストッカ数がN1以上か?」29がNOなので計量31が行われ、計量31と平行して冷却工程18の後、型開工程19で金型が開き、エジェクタ工程20Aで成形品を可動金型84から成形品Sを取出し、待機工程20Bで次の型閉工程12の型閉開始までの時間待機する。「全自動運転か」23がYESであれば型閉工程12に進み連続成形される。半自動運転等「全自動運転か」23がNOであれば成形機70は金型が開いた状態でストップ24する。全自動サイクルで連続成形すると、前述したように成形機70と取出し機71は連動動作になる。成形品Sが成形され金型が型開したら取出し機71が動作し「成形品取出しはあるか?」32がYESとなり、金型から成形品Sを取出し機71のチャック94によってチャック後取出し動作33をする。取出し機71のチャック94は、ストッカ72上の成形品Sを開放位置に指定34すると、取出し機71のチャック94は成形品Sを指定の位置まで移動後、指定ストッカで成形品を開放35する。指定ストッカに置いた成形品の冷却時間または冷却個数のカウント36を作動させることで、成形直後に高温で取出された成形品を一定時間以上ストッカ72上で冷却させる事ができる。   In the case of normal molding, since “No. of stockers is N1 or more?” 14 is NO, the process proceeds to the injection / holding process 17 and after the injection / holding process is finished, “is the number of stockers N1 or more?” 29 is NO. Weighing 31 is performed, and after the cooling process 18 in parallel with the weighing 31, the mold is opened in the mold opening process 19, the molded product S is taken out from the movable mold 84 in the ejector process 20 A, and in the standby process 20 B. It waits for the time until the mold closing start of the next mold closing process 12. If “automatic operation” 23 is YES, the process proceeds to the mold closing process 12 to perform continuous molding. If the “automatic operation” 23 such as semi-automatic operation is NO, the molding machine 70 stops 24 with the mold opened. When continuous molding is performed in a fully automatic cycle, as described above, the molding machine 70 and the take-out machine 71 are linked to each other. When the molded product S is molded and the mold is opened, the take-out machine 71 operates and “Is there a molded product taken out?” 32 becomes YES, and the post-chuck take-out operation is performed by the chuck 94 of the take-out machine 71 from the mold. 33. When the chuck 94 of the unloader 71 designates the molded product S on the stocker 72 as the open position 34, the chuck 94 of the unloader 71 moves the molded product S to the designated position and then opens 35 the molded product with the designated stocker. . By actuating the cooling time of the molded product placed in the designated stocker or the count 36 of the number of cooled products, the molded product taken out at a high temperature immediately after molding can be cooled on the stocker 72 for a certain time or more.
組立機73からの「排出要求はあるか?」37がNOの時は取出し機71のチャック94は金型の上に戻り待機する。「排出要求はあるか?」37がYESの時は、取出し機71はストッカ72に最初に置かれた成形品を判断し取出位置を指定38し、取出し機71のチャック94は指定された位置に移動して、指定ストッカで成形品を取出39を行う。取出し後にストッカ72に蓄溜されているストッカ数のカウント40を行うとともに、取出し機71のチャック94は組立機73に移動し成形品を排出41する。この状態が通常行われている成形品の製造サイクルである。   When “Is there a discharge request?” 37 from the assembly machine 73 is NO, the chuck 94 of the take-out machine 71 returns to the mold and stands by. When "is there a discharge request?" 37 is YES, the take-out machine 71 determines the first product placed on the stocker 72 and designates the take-out position 38, and the chuck 94 of the take-out machine 71 is in the designated position. Then, the molded product is taken out 39 by the designated stocker. After taking out, the number of stockers stored in the stocker 72 is counted 40, and the chuck 94 of the take-out machine 71 moves to the assembly machine 73 and discharges the molded product 41. This state is a manufacturing cycle of a molded product that is normally performed.
しかし、何らかの理由で、成形品がストッカ72に蓄溜される数より、組立機73に供給する数が少ないと、ストッカ数のカウント40の数は増加し、N1個以上になったときに取出し機71から成形機70に信号が出力される。成形機70の高圧型締13Bが入った後「ストッカ数がN1以上か?」14がYES、「ストッカ数がN2以上か?」がNOとなった時、射出遅延工程16が追加動作する。成形サイクルが延長され射出・保圧工程17が完了後、「ストッカ数がN1以上か?」29がYESとなり計量遅延工程30の後計量動作31が行われる。延長成形サイクルについては前述した図4参照。この実施形態は、図4Dサイクルの場合のフローチャートであるが、もちろん13Bの前工程に14、15の工程を行うことによって図4Eサイクルを行うことも可能である。   However, for some reason, if the number of articles supplied to the assembling machine 73 is less than the number stored in the stocker 72, the number of stockers 40 will increase and take out when N1 or more. A signal is output from the machine 71 to the molding machine 70. After the high-pressure mold clamping 13B of the molding machine 70 is turned on, when the “whether the number of stockers is equal to or greater than N1” 14 is YES and the “is the number of stockers equal to or greater than N2” is NO, the injection delay process 16 is additionally operated. After the molding cycle is extended and the injection / holding step 17 is completed, “is the number of stockers N1 or more?” 29 becomes YES and the weighing operation 31 is performed after the weighing delay step 30. See FIG. 4 above for the extended molding cycle. Although this embodiment is a flowchart in the case of the cycle of FIG. 4D, it is of course possible to perform the cycle of FIG. 4E by performing steps 14 and 15 in the previous step of 13B.
更にストッカ数のカウント72がN1以上でかつN2以上になると、取出し機71は成形機70に対しストッカが満杯である信号を出力し、「ストッカ数がN2以上か?」がYESとなり、成形機の自動が一時停止25する。N2以上信号が成形機70に入力されると、成形機の自動動作が停止している時間を成形機70がカウントする。この機構によって「停止時間がT分以内か?」26がYESで、ストッカ72に蓄溜されているストッカ数のカウント40がN1を超える値の時「ストッカ数がN1以下か?」27がNOの時は、成形機70は自動一時停止状態25になる。   Further, when the stocker count 72 is N1 or more and N2 or more, the take-out machine 71 outputs a signal indicating that the stocker is full to the molding machine 70, "YES the stocker number is N2 or more?" Is automatically paused 25. When a signal of N2 or more is input to the molding machine 70, the molding machine 70 counts the time during which the automatic operation of the molding machine is stopped. With this mechanism, if “stop time is within T minutes?” 26 is YES, and the count 40 of stockers stored in the stocker 72 is greater than N1, “is the number of stockers less than N1?” 27 is NO At this time, the molding machine 70 enters the automatic pause state 25.
成形機70が自動一時停止の時に組立機73への成形品排出41が行われ、ストッカ72上の蓄溜数がN1以下になった時、「ストッカ数がN1以下か?」27がYESになると成形機70は自動一時停止が解除され、標準成形サイクルで全自動成形が開始し、射出・保圧工程17から動作する。N2以上の入力で成形機70が自動一時停止後、ストッカ数がN1以下になり標準成形サイクルで全自動成形が再開すると「成形機停止後の自動起動、Nショット未満か?」がYESの時は成形品の品質が安定するまでNショットだけリジェクト22が行われ、取出し機71で自動に不良品エリア(不図示)に自動排出され、Nショット後に取出し機71のチャック94によって成形された成形品はストッカ72に再び蓄溜される。   When the molding machine 70 is automatically paused, the molded product discharge 41 to the assembling machine 73 is performed, and when the accumulated number on the stocker 72 becomes N1 or less, “is the stocker number N1 or less?” 27 becomes YES. Then, the molding machine 70 is released from the automatic pause, starts fully automatic molding in the standard molding cycle, and operates from the injection / holding step 17. When the molding machine 70 stops automatically with an input of N2 or more, the number of stockers becomes N1 or less, and when fully automatic molding resumes in the standard molding cycle, "Automatic start after stopping molding machine, less than N shots?" Is YES Is rejected 22 for N shots until the quality of the molded product is stabilized, automatically ejected to a defective product area (not shown) by the take-out machine 71, and molded by the chuck 94 of the take-out machine 71 after N shots. The product is stored in the stocker 72 again.
N2以上の信号が成形機70に入力後、成形機の自動一時停止時間が「停止時間がT分以内か?」がNOになると成形機の自動一時停止から自動運転停止28状態になり、ストッカ数がN1以下になっても成形機70は自動成形が再稼動しないように構成されている。   After a signal of N2 or more is input to the molding machine 70, when the automatic pause time of the molding machine is “NO in T minutes?”, The automatic pause of the molding machine is changed to the automatic operation stop 28 state. Even if the number becomes N1 or less, the molding machine 70 is configured so that automatic molding does not restart.
図6は本発明の成形品の製造方法動作時の運転チャートで、ストッカ72に蓄溜される数の推移L1について示したものである。   FIG. 6 is an operation chart during operation of the molded product manufacturing method of the present invention, and shows the transition L1 of the number stored in the stocker 72.
組立機が停止状態の時、ストッカの成形品の蓄溜数がN1個に達した時間H1からサイクル延長成形DもしくはEの動作に変更され、サイクル延長条件で成形される。このサイクル延長によってストッカに蓄溜される時間は長くなるが、さらに組立機の停止状態が継続されると、ストッカ72が満杯になった状態N2個がストッカ72に蓄溜された時H2で成形機が自動一時停止状態になる。自動一時停止の時間がT分以内のときH3の時に自動機が稼動し、成形品がストッカから排出L2されるとストッカに蓄溜されている数が減少し、N1以下になったH4時間の時に、成形機は全自動運転を再開する。全自動運転再開直後のNショット分成形品をリジェクトで不良品エリアに排出した後の、H5時間から成形品がストッカに蓄溜されると、ストッカ上の蓄溜数は供給と排出のバランスが取れて一定量で安定する。その後H6で再び組立機の異常により成形品排出L2が停止すると、ストッカ上の蓄溜数は増加し、N1蓄溜されたH7時間で、H1時間と同様に成形機がサイクル延長動作になる。   When the assembling machine is in a stopped state, the operation is changed to the cycle extension molding D or E from the time H1 when the number of stocked molded article stocks reaches N1, and molding is performed under cycle extension conditions. This cycle extension increases the time accumulated in the stocker, but if the assembly machine is further stopped, the stocker 72 is full. When the N2 pieces are accumulated in the stocker 72, molding is performed at H2. The machine enters the automatic pause state. When the automatic pause time is within T minutes, the automatic machine is activated at H3, and when the molded product is discharged L2 from the stocker, the number stored in the stocker decreases, and the H4 time when it becomes N1 or less Sometimes the molding machine resumes full automatic operation. If the molded product is accumulated in the stocker from H5 hours after rejecting the N-shot molded product immediately after resuming full-automatic operation to the defective product area, the balance of supply and discharge is the number of stocks on the stocker. Takes and stabilizes at a certain amount. After that, when the molded product discharge L2 is stopped again due to an abnormality in the assembly machine at H6, the number of accumulations on the stocker increases, and the molding machine performs a cycle extension operation at H7 time when N1 is accumulated, as with H1 time.
以上説明したように、組立機の異常停止により生ずる、ストッカへの蓄溜数に応じて、成形サイクル延長やストッカ満杯時は成形機の自動運転を一時停止し、シリンダ内で滞留している樹脂が安定状態である溶融樹脂品質維持範囲の時間内である一時停止時間T内に組立機が稼動し、ストッカ数が指定量まで減少したとき、自動で成形機が標準成形サイクルで再稼動できるようにする事で、組立機が異常停止した時間や頻度に係らず、ストッカに蓄溜できる数量を増設することなく、組立機の動作に追従した成形ができる。   As explained above, depending on the number of accumulations in the stocker caused by abnormal stoppage of the assembly machine, when the molding cycle is extended or the stocker is full, the automatic operation of the molding machine is temporarily stopped and the resin stays in the cylinder. When the assembly machine is operated within the pause time T that is within the molten resin quality maintenance range when the machine is in a stable state and the number of stockers is reduced to the specified amount, the molding machine can be automatically restarted in the standard molding cycle. By doing so, it is possible to perform molding that follows the operation of the assembly machine without increasing the quantity that can be stored in the stocker, regardless of the time and frequency at which the assembly machine stopped abnormally.
また、ストッカ満杯時は成形機の自動運転を一時停止し、シリンダ内で滞留している樹脂の安定状態である溶融樹脂品質維持範囲の時間を超えた一時停止時間Tを経過した時は、成形する成形品の寸法精度や外観品質に影響を与えるため、成形機の自動が停止し、成形機の再稼動時は品質を確認した成形オペレーターが介在した、通常の立上げ動作を行うようにできる。   Also, when the stocker is full, the automatic operation of the molding machine is temporarily stopped, and when the temporary stop time T that exceeds the time of the molten resin quality maintenance range that is the stable state of the resin staying in the cylinder has passed, This will affect the dimensional accuracy and appearance quality of the molded product, so the molding machine will stop automatically, and when the molding machine is restarted, it will be possible to perform normal startup operations with the molding operator checking the quality. .
またストッカに蓄積されたあらかじめ設定された数量未満の時は標準成形サイクルで成形し、ストッカに蓄積された数量があらかじめ設定された数量以上のときサイクル延長した時間で成形するが、成形サイクル延長時間は標準成形サイクルの整数倍の時間でサイクル延長する事によって、ストッカに蓄積された数量の検出やサイクル延長するためのタイミングが明確になる。特に、金型から成形品を取出した後に二次加工等の工程を経てストッカに蓄溜させたり、ストッカから二次加工等の工程を経て組立機に成形品を排出させる場合、二次加工等の工程でも標準サイクルは決まっている装置が一般的なので、二次加工等の工程や組立機との1サイクル動作タイミングが調整しやすくなるので生産システムの同期が取りやすくかつサイクル延長や通常サイクルへの切換制御が簡素化できる。   If the quantity stored in the stocker is less than the preset quantity, molding is performed in the standard molding cycle, and if the quantity accumulated in the stocker is greater than the preset quantity, molding is performed with the cycle extended time. By extending the cycle by an integral multiple of the standard molding cycle, the timing for detecting the quantity accumulated in the stocker and extending the cycle becomes clear. In particular, when taking out the molded product from the mold and storing it in the stocker through the secondary processing, etc., or discharging the molded product to the assembly machine through the secondary processing from the stocker, etc. Since the standard cycle is generally used in this process, it is easy to adjust the timing of one cycle operation with the assembly process and the process of secondary processing, etc., making it easy to synchronize the production system and extending the cycle to the normal cycle. Switching control can be simplified.
組立機の異常停止時間が長く、射出成形した成形品をストックするストッカが満杯になった時、成形機の自動動作を自動的に一時停止させることによって、ストッカ数を必要以上に増設する必要が無いため、ストッカサイズのコンパクト化ができる。   When the assembly machine has a long abnormal stop time and the stocker that stocks injection molded parts is full, it is necessary to temporarily stop the automatic operation of the molding machine to increase the number of stockers more than necessary. Because there is no stocker size, it can be made compact.
更に、成形機の動作が一時停止している時間の間、シリンダに滞留している溶融樹脂で成形した時に組立に供給可能な品質である停止時間範囲内に、組立機が再稼動しストッカ蓄溜数が減少し指定数になると自動で成形機が再稼動するため、組立機の異常停止時間に影響されず成形機が連動するため、成形オペレーターの作業改善や業務効率を上げる事ができる。   Furthermore, during the time when the molding machine operation is temporarily stopped, the assembly machine is restarted and stored in the stocker within the stop time range, which is the quality that can be supplied to the assembly when it is molded with the molten resin staying in the cylinder. When the number of reservoirs decreases and the specified number is reached, the molding machine automatically restarts, so that the molding machine is linked without being affected by the abnormal stop time of the assembly machine, which can improve the work of the molding operator and increase work efficiency.
また、成形機の動作が一時停止している時間が、組立に供給可能な品質である時間範囲以上になった時は成形機が自動的に停止するため、シリンダに滞留している溶融樹脂が原因で発生する品質不良の成形品の流出を防止する事ができる。   In addition, when the time when the operation of the molding machine is temporarily stopped exceeds the time range that is the quality that can be supplied to the assembly, the molding machine automatically stops. It is possible to prevent outflow of poor quality molded products caused by the cause.
また、生産ラインである組立機に成形品を自動供給する本成形品の製造方法においては、ストッカに蓄溜された数量によって成形サイクルの延長や通常サイクル成形への切換をするので、切換タイミングが明確な通常サイクルの整数倍のサイクルで延長させるため組立機再稼動時でも、成形とのサイクル周期が合せやすくなる。成形機とストッカもしくは、ストッカと組立機の間に別の二次加工等の作業工程が追加されても、容易にタイミングの調整でき、成形機の制御が簡素化できる。   In addition, in the manufacturing method of the molded product that automatically supplies the molded product to the assembly machine that is the production line, the molding cycle is extended or switched to normal cycle molding depending on the quantity stored in the stocker. Since the cycle is extended by an integer multiple of a clear normal cycle, it is easy to match the cycle cycle with the molding even when the assembly machine is restarted. Even if another work process such as secondary processing is added between the molding machine and the stocker or between the stocker and the assembly machine, the timing can be easily adjusted and the control of the molding machine can be simplified.
本発明の成形品の製造方法に用いられる射出成形機と組立機と取出し機の関係を示すブロック図The block diagram which shows the relationship between the injection molding machine used for the manufacturing method of the molded article of this invention, an assembly machine, and a taking-out machine. 本発明の実施例を示したフローチャート図The flowchart figure which showed the Example of this invention 通常成形サイクル動作図Normal molding cycle operation diagram 成形サイクル延長時の動作図Operation diagram when molding cycle is extended 本発明の成形品の製造方法に用いられる射出成形機と組立機と取出し機の概略図Schematic diagram of an injection molding machine, an assembly machine and a take-out machine used in the method for producing a molded article of the present invention 本発明の成形品の製造方法動作時の運転チャートOperation chart during operation of manufacturing method of molded product of the present invention ストッカ蓄溜時の配置図Layout diagram when stocker is stored ストッカ蓄溜時の配置図Layout diagram when stocker is stored 従来例の成形サイクル延長時の動作図Operation diagram when extending the molding cycle of the conventional example
符号の説明Explanation of symbols
64 射出遅延工程
65 計量遅延工程
66 高圧型締遅延工程
70 成形機
71 取出し機
72 ストッカ
73 組立機
64 Injection delay process 65 Weighing delay process 66 High pressure clamping delay process 70 Molding machine 71 Unloader 72 Stocker 73 Assembly machine

Claims (7)

  1. 射出成形機で成形品を成形し、該成形品を次の工程に搬送するまでストッカにて蓄溜する生産システムを用いた成形品の製造方法であって、前記ストッカに蓄溜されている前記成形品の数量が第一の所定量になった時、前記射出成形機の成形を一時停止し、前記ストッカに蓄溜されている前記成形品の数量が前記第一の所定量よりも小さい第二の所定量になった時、前記射出成形機を再稼動することを特徴とする成形品の製造方法。   A method of manufacturing a molded product using a production system that molds a molded product with an injection molding machine and stores the molded product in a stocker until the molded product is conveyed to the next step, wherein the stored product is stored in the stocker. When the number of molded products reaches a first predetermined amount, the molding of the injection molding machine is temporarily stopped, and the number of molded products stored in the stocker is smaller than the first predetermined amount. A method of manufacturing a molded product, wherein the injection molding machine is restarted when the predetermined amount is reached.
  2. 前記射出成形機は、前記再稼動後成形される所定の数量の成形品を、不良品エリアに排出することを特徴とする請求項1記載の成形品の製造方法。   2. The method of manufacturing a molded product according to claim 1, wherein the injection molding machine discharges a predetermined number of molded products molded after the restart to a defective product area.
  3. 前記第二の所定量は、前記再稼動後、不良品エリアに排出される成形品の数量より大きいことを特徴とする請求項2に記載の成形品の製造方法。   The method for manufacturing a molded product according to claim 2, wherein the second predetermined amount is larger than the number of molded products discharged to the defective product area after the re-operation.
  4. 前記ストッカに蓄溜されている前記成形品の数量が第一の所定量になる前であって、第二の所定量を越えた時は、型閉工程、型締工程、射出工程、保圧工程、冷却工程及び型開工程から成る成形サイクルのうち、型締工程の後であって射出工程前に、前記射出工程の開始を所定の時間遅延させる射出遅延工程を追加することにより、前記成形サイクルを延長することを特徴とする請求項1記載の成形品の製造方法。   Before the amount of the molded product stored in the stocker reaches the first predetermined amount and exceeds the second predetermined amount, the mold closing process, the mold clamping process, the injection process, the pressure holding Of the molding cycle consisting of a process, a cooling process and a mold opening process, an injection delay process is added to delay the start of the injection process for a predetermined time after the mold clamping process and before the injection process. The method for producing a molded article according to claim 1, wherein the cycle is extended.
  5. 前記射出工程を遅延させる所定の時間は、前記成形サイクルの整数倍の時間とすることを特徴とする請求項に記載の成形品の製造方法。 The method for manufacturing a molded product according to claim 4 , wherein the predetermined time for delaying the injection step is a time that is an integral multiple of the molding cycle.
  6. 前記ストッカに蓄溜されている前記成形品の数量が第一の所定量になる前であり、第二の所定量を越えた時は、型閉工程、低圧型締工程、高圧型締工程、射出工程、保圧工程、冷却工程及び型開工程から成る成形サイクルのうち、前記低圧型締工程の後であって前記高圧型締工程前に、前記高圧型締工程の開始を所定の時間遅延させる高圧型締遅延工程を追加することにより、前記成形サイクルを延長することを特徴とする請求項1に記載の成形品の製造方法。   Before the quantity of the molded product stored in the stocker reaches the first predetermined amount, and exceeds the second predetermined amount, the mold closing process, the low pressure mold clamping process, the high pressure mold clamping process, Among the molding cycle consisting of an injection process, a pressure holding process, a cooling process and a mold opening process, the start of the high pressure clamping process is delayed by a predetermined time after the low pressure clamping process and before the high pressure clamping process. The method for producing a molded product according to claim 1, wherein the molding cycle is extended by adding a high-pressure mold clamping delay step.
  7. 前記高圧型締を遅延させる所定の時間は、前記成形サイクルの整数倍の時間とすることを特徴とする請求項に記載の成形品の製造方法。 The method for manufacturing a molded product according to claim 6 , wherein the predetermined time for delaying the high-pressure mold clamping is an integral multiple of the molding cycle.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106863728A (en) * 2016-12-29 2017-06-20 海天塑机集团有限公司 A kind of injection machine utilizes the storing method and control system of circular wait interval time

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106863728A (en) * 2016-12-29 2017-06-20 海天塑机集团有限公司 A kind of injection machine utilizes the storing method and control system of circular wait interval time
CN106863728B (en) * 2016-12-29 2019-02-15 海天塑机集团有限公司 A kind of injection molding machine waits the storing method and control system of interval time using circulation

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