JP5808286B2 - Clamping device and injection device of injection molding machine - Google Patents
Clamping device and injection device of injection molding machine Download PDFInfo
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Description
本発明は射出成形機に関し、特に射出成形機の２枚のプレートを複数の連結棒で結合し、連結棒に平行に摺動するプレートを有し、摺動するプレートが力を受けることにより、連結棒が伸びる射出成形機の型締装置および射出成形機の射出装置に関する。 The present invention relates to an injection molding machine, and in particular, two plates of an injection molding machine are coupled with a plurality of connecting rods, and have a plate that slides parallel to the connecting rod, and the sliding plate receives force, The present invention relates to a mold clamping device of an injection molding machine in which a connecting rod extends and an injection device of the injection molding machine.
射出成形機は、２つのプレート（プレート１，プレート２）を複数の連結棒１０で結合し、複数の連結棒１０に平行に摺動するプレート３を有し、摺動するプレート３が力を受けることにより、複数の連結棒１０が伸びる機構部を有する射出成形機の型締装置Ｍｃおよび射出装置Ｍｉを機台Ｍｂに備えている（図１，図２参照）。 The injection molding machine has two plates (plate 1 and plate 2) connected by a plurality of connecting rods 10, and has a plate 3 that slides parallel to the plurality of connecting rods 10, and the sliding plate 3 exerts a force. By receiving, the machine base Mb is provided with a mold clamping device Mc and an injection device Mi of an injection molding machine having a mechanism part in which a plurality of connecting rods 10 extend (see FIGS. 1 and 2).
図２，図３に示すように、型締装置Ｍｃは、固定プラテン２１とリアプラテン２２を複数のタイバー２０によって結合している。固定プラテンナット２６はタイバー２０を固定プラテン２１に固定している。リアプラテンナット２７はタイバー２０をリアプラテン２２に固定している。但し、リアプラテンナット２７はタイバー軸中心に回転可能に取り付けられており、リアプラテンナット２７が回転することにより、リアプラテン２２を機台Ｍｂ上において固定プラテン２１方向に前後進させ、型厚調整を行うことができる。
型締装置Ｍｃでは、４本のタイバーが使用されることが殆どである。それら４本のタイバー２０，２０，２０，２０間のタイバーバランスと型内平行度を高精度に調整するには、リアプラテンナット２７のねじ込み量を調整するのが一般的である。しかし、平面は３点で決定するため、４本のタイバーを持つ型締装置Ｍｃは、１つのリアプラテンナット２７を調整すると残り３本のタイバーバランスが変化してしまい、型内平行度も変わってしまい、タイバーバランスと型内平行度の両方を高精度に調整するのが非常に困難であった。
As shown in FIGS. 2 and 3, in the mold clamping device Mc, the fixed platen 21 and the rear platen 22 are coupled by a plurality of tie bars 20. The fixed platen nut 26 fixes the tie bar 20 to the fixed platen 21. The rear platen nut 27 fixes the tie bar 20 to the rear platen 22. However, the rear platen nut 27 is rotatably attached to the center of the tie bar shaft, and when the rear platen nut 27 rotates, the rear platen 22 is moved back and forth in the direction of the fixed platen 21 on the machine base Mb to adjust the mold thickness. It can be carried out.
In the mold clamping device Mc, four tie bars are mostly used. In order to adjust the tie bar balance between these four tie bars 20, 20, 20, and 20 and the in-mold parallelism with high accuracy, it is common to adjust the screwing amount of the rear platen nut 27. However, since the plane is determined by three points, in the mold clamping device Mc having four tie bars, when one rear platen nut 27 is adjusted, the balance of the remaining three tie bars changes, and the in-mold parallelism also changes. Therefore, it was very difficult to adjust both the tie bar balance and the in-mold parallelism with high accuracy.
レンズ成形、薄肉成形、微細成形を行い場合、特に、タイバーバランス、型内平行度の高精度化が必要である。また、高精度な機構部を備えた型締装置Ｍｃであっても、金型２８の精度が悪いとこれらのデータ（タイバーバランスや型内平行度）は悪くなる。この問題を解決するため、特許文献１や特許文献２には、各タイバーにヒータを取り付け、熱膨張によりタイバーの長さを変更しタイバーバランス調整する仕組みが開示されている。 When performing lens molding, thin-wall molding, and fine molding, it is particularly necessary to improve tie bar balance and in-mold parallelism. Further, even in the mold clamping device Mc provided with a high-accuracy mechanism, these data (tie bar balance and in-mold parallelism) are deteriorated if the accuracy of the mold 28 is poor. In order to solve this problem, Patent Documents 1 and 2 disclose a mechanism in which a heater is attached to each tie bar, and the tie bar balance is adjusted by changing the length of the tie bar by thermal expansion.
背景技術の欄で説明した従来技術では、常時ヒータを使用しなければならず、省エネの観点から問題がある。さらに、タイバーの温度を上昇させることによるタイバーの伸びは、リアプラテンの位置ずれを引き起こし、型内平行度を変動させてしまう問題があった。また、射出装置Ｍｉの場合、図２に示されるように４本のタイロッド３０でフロントプレート３１、リアプレート３２を結合する。プッシャープレート３３がタイロッド３０を摺動する。加工の際に生じるタイロッド長さの差異や、上下左右の射出装置の機構部の重心の違いにより、タイロッド３０が受ける力が異なり、折損に繋がる場合もある。
そこで本発明は、上記従来技術の問題点に鑑みて、射出成形機に備わった連結棒のバランス調整を行うことが可能な射出成形機を提供することを課題とし、より具体的には、型内平行度の精度を維持しつつタイバーバランスの微調整を行なうことが可能な射出成形機の型締装置を提供することを課題とすると共に、組立後のタイロッドバランスの微調整を行なうことが可能な射出成形機の射出装置を提供することを課題とする。
In the prior art described in the background art section, a heater must be used at all times, which is problematic from the viewpoint of energy saving. Furthermore, the extension of the tie bar caused by raising the temperature of the tie bar causes a position shift of the rear platen, causing a problem that the parallelism in the mold is changed. In the case of the injection device Mi, the front plate 31 and the rear plate 32 are coupled by four tie rods 30 as shown in FIG. The pusher plate 33 slides on the tie rod 30. The force received by the tie rod 30 differs depending on the difference in tie rod length that occurs during processing and the difference in the center of gravity of the mechanism part of the upper, lower, left, and right injection devices, which may lead to breakage.
Accordingly, in view of the above-described problems of the prior art, an object of the present invention is to provide an injection molding machine capable of adjusting the balance of a connecting rod provided in an injection molding machine, more specifically, a mold. It is an object to provide a mold clamping device of an injection molding machine that can finely adjust the tie bar balance while maintaining the accuracy of the inner parallelism, and also enables fine adjustment of the tie rod balance after assembly. It is an object to provide an injection device for a simple injection molding machine.
本願の請求項１に係る発明は、固定プラテンとリアプラテンとを複数本の平行なタイバーによって連結し、該タイバーに平行に摺動する可動プラテンを、前記リアプラテンとの間に設けられた駆動機構によって前記固定プラテンへ押圧することにより、前記可動プラテンと前記固定プラテンのそれぞれの対向面に取り付けた金型を締付ける射出成形機の型締装置において、前記タイバーの外周形状に係合する係合面を有し、前記タイバーの材質のヤング率よりも大きい材質からなる筒状部材を前記タイバーに固定部材を用いて固定したタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置である。
請求項２に係る発明は、前記タイバーに他の外周より径の小さい小径部を設け、前記筒状部材を係合させることを特徴とする請求項１に記載の射出成形機の型締装置である。
請求項３に係る発明は、固定プラテンとリアプラテンとを複数本の平行なタイバーによって連結し、該タイバーに平行に摺動する可動プラテンを、前記リアプラテンとの間に設けられた駆動機構によって前記固定プラテンへ押圧することにより、前記可動プラテンと前記固定プラテンのそれぞれの対向面に取り付けた金型を締付ける射出成形機の型締装置において、前記タイバーの端面にねじ穴を設け、該ねじ穴に調整ボルトを螺合させ、該調整ボルトに回転阻止部材を取り付けたタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置である。
請求項４に係る発明は、前記調整ボルトを駆動する駆動手段を設けたことを特徴とする請求項３に記載の射出成形機の型締装置である。
In the invention according to claim 1 of the present application, a fixed platen and a rear platen are connected by a plurality of parallel tie bars, and a movable platen sliding in parallel with the tie bars is provided by a drive mechanism provided between the rear platen. In a mold clamping device of an injection molding machine that clamps a mold attached to each of the opposed surfaces of the movable platen and the fixed platen by pressing against the fixed platen, an engagement surface that engages with the outer peripheral shape of the tie bar is provided. A mold clamping device for an injection molding machine, comprising: a tie bar elongation adjustment section that has a cylindrical member made of a material larger than the Young's modulus of the tie bar material and is fixed to the tie bar using a fixing member It is.
The invention according to claim 2 is the mold clamping device for an injection molding machine according to claim 1, wherein the tie bar is provided with a small-diameter portion having a smaller diameter than the other outer periphery, and the cylindrical member is engaged. is there.
According to a third aspect of the present invention, a fixed platen and a rear platen are connected by a plurality of parallel tie bars, and a movable platen that slides parallel to the tie bars is fixed by a drive mechanism provided between the rear platens. In the mold clamping device of the injection molding machine that clamps the molds attached to the opposing surfaces of the movable platen and the fixed platen by pressing against the platen, a screw hole is provided on the end surface of the tie bar, and the screw hole is adjusted. A mold clamping device for an injection molding machine, characterized in that a bolt is screwed and a tie bar elongation amount adjusting portion is provided with a rotation preventing member attached to the adjusting bolt.
According to a fourth aspect of the present invention, there is provided a mold clamping device for an injection molding machine according to the third aspect, wherein a driving means for driving the adjustment bolt is provided.
請求項５に係る発明は、固定プラテンとリアプラテンとを複数本の平行なタイバーによって連結し、該タイバーに平行に摺動する可動プラテンを、前記リアプラテンとの間に設けられた駆動機構によって前記固定プラテンへ押圧することにより、前記可動プラテンと前記固定プラテンのそれぞれの対向面に取り付けた金型を締付ける射出成形機の型締装置において、前記タイバーの外周形状に係合する係合面を有する筒状本体と、該筒状本体の端面に設けられたフランジ部を有し、該フランジ部を前記固定プラテンに取り付けたタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置である。
請求項６に係る発明は、射出シリンダが取り付けられたフロントプレートとリアプレートとを複数本の平行なタイロッドによって連結し、射出スクリュが取り付けられたプッシャープレートを前記タイロッドに平行に摺動させる機構を前記リアプレートに設けた射出成形機の射出装置において、前記タイロッドの外周形状に係合する係合面を有し、前記タイロッドの材質のヤング率よりも大きい材質からなる筒状部材を前記タイロッドに固定部材を用いて固定したタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置である。
請求項７に係る発明は、前記タイロッドに他の外周より径の小さい小径部を設け、前記筒状部材を係合させることを特徴とする請求項６に記載の射出成形機の射出装置である。
In the invention according to claim 5, the fixed platen and the rear platen are connected by a plurality of parallel tie bars, and a movable platen that slides parallel to the tie bars is fixed by the drive mechanism provided between the rear platens. A cylinder having an engagement surface that engages with the outer peripheral shape of the tie bar in a mold clamping device of an injection molding machine that clamps molds attached to the opposing surfaces of the movable platen and the fixed platen by pressing against the platen. A mold clamping device for an injection molding machine, characterized in that a mold body and a flange portion provided on an end surface of the cylindrical body are provided, and a tie bar elongation adjusting portion is provided in which the flange portion is attached to the fixed platen. It is.
According to a sixth aspect of the present invention, there is provided a mechanism in which a front plate and a rear plate to which an injection cylinder is attached are connected by a plurality of parallel tie rods, and a pusher plate to which an injection screw is attached slides in parallel with the tie rod. In the injection apparatus of the injection molding machine provided on the rear plate, a cylindrical member made of a material having an engagement surface that engages with the outer peripheral shape of the tie rod and having a material larger than the Young's modulus of the material of the tie rod is attached to the tie rod. An injection apparatus for an injection molding machine, characterized in that a tie rod elongation adjustment section fixed using a fixing member is provided.
The invention according to claim 7 is the injection apparatus for an injection molding machine according to claim 6, wherein the tie rod is provided with a small diameter portion having a smaller diameter than the other outer periphery, and the cylindrical member is engaged. .
請求項８に係る発明は、射出シリンダが取り付けられたフロントプレートとリアプレートとを複数本の平行なタイロッドによって連結し、射出スクリュが取り付けられたプッシャープレートを前記タイロッドに平行に摺動させる機構を前記リアプレートに設けた射出成形機の射出装置において、前記タイロッドの端部にねじ穴を設け、該ねじ穴に調整ボルトを螺合させ、該調整ボルトに回転阻止部材を取り付けたタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置である。
請求項９に係る発明は、前記調整ボルトを駆動する駆動手段を設けたことを特徴とする請求項８に記載の射出成形機の射出装置である。
請求項１０に係る発明は、射出シリンダが取り付けられたフロントプレートとリアプレートとを複数本の平行なタイロッドによって連結し、射出スクリュが取り付けられたプッシャープレートを前記タイロッドに平行に摺動させる機構を前記リアプレートに設けた射出成形機の射出装置において、前記タイロッドの外周形状に係合する係合面を有する筒状本体と、該筒状本体の端面に設けられたフランジ部を有し、該フランジ部を前記フロントプレートまたは前記リアプレートに取り付けたタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置である。
According to an eighth aspect of the present invention, there is provided a mechanism in which a front plate and a rear plate to which an injection cylinder is attached are connected by a plurality of parallel tie rods, and a pusher plate to which an injection screw is attached is slid parallel to the tie rod. In the injection apparatus of the injection molding machine provided on the rear plate, a tie rod elongation adjustment is made by providing a screw hole at the end of the tie rod, screwing an adjustment bolt into the screw hole, and attaching a rotation prevention member to the adjustment bolt. An injection device for an injection molding machine, characterized in that a portion is provided.
The invention according to claim 9 is the injection apparatus for an injection molding machine according to claim 8, characterized in that a drive means for driving the adjusting bolt is provided.
According to a tenth aspect of the present invention, there is provided a mechanism in which a front plate and a rear plate to which an injection cylinder is attached are connected by a plurality of parallel tie rods, and a pusher plate to which an injection screw is attached slides in parallel with the tie rod. In the injection apparatus of the injection molding machine provided on the rear plate, the cylindrical main body having an engagement surface that engages with the outer peripheral shape of the tie rod, and a flange portion provided on an end surface of the cylindrical main body, An injection apparatus for an injection molding machine, characterized in that a tie rod elongation adjustment unit having a flange portion attached to the front plate or the rear plate is provided.
本発明により、型内平行度の精度を維持しつつタイバーバランスの微調整を行なうことが可能な射出成形機の型締装置を提供できると共に、組立後のタイロッドバランスの微調整を行なうことが可能な射出成形機の射出装置を提供できる。 According to the present invention, it is possible to provide a mold clamping device of an injection molding machine that can finely adjust the tie bar balance while maintaining the accuracy of the in-mold parallelism, and to finely adjust the tie rod balance after assembly. An injection device for a simple injection molding machine can be provided.
以下、本発明の実施形態を図面と共に説明する。
射出成形機は、図２について従来技術の欄で説明したように、機台Ｍｂ上に型締装置Ｍｃと射出装置Ｍｉを備えている。型締装置Ｍｃと射出装置Ｍｉのそれぞれに備わった機構部は、基本的な構成は図１に示されるとおりである。そのため、本発明は何れの機構部にも使用できるため、いずれかの機構部での説明は両者に適用できる。図１の各要素と型締装置Ｍｃの型締機構部と射出装置Ｍｉの射出機構部の各要素は、連結棒１０（タイバー２０、タイロッド３０）、プレート１（固定プラテン２１、フロントプレート３１）、プレート２（リアプラテン２２、リアプレート３２）、プレート３（可動プラテン２３、プッシャープレート３３）のように対応する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The injection molding machine includes a mold clamping device Mc and an injection device Mi on the machine base Mb as described in the section of the related art with reference to FIG. The basic structure of the mechanical part provided in each of the mold clamping device Mc and the injection device Mi is as shown in FIG. Therefore, since this invention can be used for any mechanism part, the description in any mechanism part is applicable to both. The elements shown in FIG. 1, the mold clamping mechanism portion of the mold clamping device Mc and the injection mechanism portion of the injection device Mi are the connecting rod 10 (tie bar 20, tie rod 30), plate 1 (fixed platen 21, front plate 31). , Plate 2 (rear platen 22, rear plate 32), plate 3 (movable platen 23, pusher plate 33).
図３は、一般的な型締装置の型締機構部の概略斜視図である。リアプラテン２２と可動プラテン２３の間にあるリンク機構などの機構部は図示省略している。図示省略した機構部により可動プラテン２３がタイバー２０の長手方向に動作し、型締、型開き動作を行なう。型締動作時に、可動プラテン２３とリアプラテン２２が同方向に力を受け、タイバー２０が長手方向に伸びる。複数のタイバー２０（図３では４本のタイバー）にかかる力のバランスと型締時の固定プラテン２１と可動プラテン２３の型内平行度が、精密成形に必要である。固定プラテンナット２６からリアプラテンナット２７迄の距離がタイバー２０の固定端２点間距離（Ｌ０）であり、タイバー２０のこの部分が伸び、型締め力を発生する。 FIG. 3 is a schematic perspective view of a mold clamping mechanism portion of a general mold clamping apparatus. A mechanical part such as a link mechanism between the rear platen 22 and the movable platen 23 is not shown. The movable platen 23 is moved in the longitudinal direction of the tie bar 20 by a mechanism portion (not shown) to perform mold clamping and mold opening operations. During the mold clamping operation, the movable platen 23 and the rear platen 22 receive a force in the same direction, and the tie bar 20 extends in the longitudinal direction. The balance of force applied to a plurality of tie bars 20 (four tie bars in FIG. 3) and the in-mold parallelism of the fixed platen 21 and the movable platen 23 at the time of mold clamping are necessary for precision molding. The distance from the fixed platen nut 26 to the rear platen nut 27 is the distance (L0) between two fixed ends of the tie bar 20, and this portion of the tie bar 20 extends to generate a clamping force.
温度の要因を無視した場合のタイバー２０の伸び量は、（タイバーにかかる力／断面積）×（固定端２点間距離／ヤング率）で求められる。そこで、本発明は、タイバーの断面積もしくは固定端２点間距離を各々変更し、タイバー２０の伸び量を調整する構造とする。 The amount of elongation of the tie bar 20 when the temperature factor is ignored is obtained by (force applied to the tie bar / cross-sectional area) × (distance between two fixed ends / Young's modulus). Therefore, the present invention has a structure in which the cross-sectional area of the tie bar or the distance between two fixed ends is changed to adjust the extension amount of the tie bar 20.
以下、各実施形態を説明する。
＜実施形態１＞
実施形態１を図４，図５を用いて説明する。図４は連結棒断面積調整部品の一例を示す斜視図である。図５は、連結棒断面積調整部品を取り付けることによって連結棒の断面積を調整する実施形態を説明する図である。ここでは、連結棒１０としてタイバー２０を例として説明する。
Each embodiment will be described below.
<Embodiment 1>
The first embodiment will be described with reference to FIGS. FIG. 4 is a perspective view showing an example of a connecting rod cross-sectional area adjusting component. FIG. 5 is a diagram for explaining an embodiment in which the cross-sectional area of the connecting rod is adjusted by attaching the connecting rod cross-sectional area adjusting component. Here, the tie bar 20 will be described as an example of the connecting rod 10.
図４の連結棒断面積調整部品４０を図５に示されるように、タイバー２０の固定プラテン２１とリアプラテン２２の間の所定箇所に取り付けると、タイバー２０の断面積が擬似的に増加する。連結棒断面積調整部品４０は、長さＬ１を持ち、タイバー２０の外径と同じ半径の内周面を備えた２つの断面半円環状の部材から構成される。連結棒断面積調整部品４０の半円環状の２つの部品は、ねじ孔４２にねじ４１がねじ込まれて円筒状部材としてタイバー２０に密着される。固定端２点間距離Ｌ０（図３参照）が変化することなくタイバー２０の断面積が増えるので、連結棒断面積調整部品４０を装着したタイバー２０によって生じる力を小さくすることができる。タイバー２０の断面積を擬似的に増やすには、連結棒断面積調整部品４０の外径を大きくする、若しくは、タイバー２０の長手方向に、同等の形状部品を直列に配列し、タップ孔４３にねじ４４をねじ込んで結合していくことも可能である。 As shown in FIG. 5, when the connecting rod cross-sectional area adjusting component 40 of FIG. 4 is attached to a predetermined position between the fixed platen 21 and the rear platen 22 of the tie bar 20, the cross-sectional area of the tie bar 20 increases in a pseudo manner. The connecting rod cross-sectional area adjusting component 40 has a length L1 and is composed of two members having a semicircular cross section having an inner peripheral surface having the same radius as the outer diameter of the tie bar 20. Two semi-annular parts of the connecting rod cross-sectional area adjusting part 40 are in close contact with the tie bar 20 as a cylindrical member by screwing a screw 41 into the screw hole 42. Since the cross-sectional area of the tie bar 20 increases without changing the distance L0 between the two fixed ends (see FIG. 3), the force generated by the tie bar 20 to which the connecting rod cross-sectional area adjusting component 40 is attached can be reduced. In order to increase the cross-sectional area of the tie bar 20 in a pseudo manner, the outer diameter of the connecting-bar cross-sectional area adjusting component 40 is increased, or equivalently shaped parts are arranged in series in the longitudinal direction of the tie bar 20, It is also possible to screw the screws 44 together.
ところで、型締動作と型開動作に伴って起きるタイバー２０の伸縮動作の反復により、ねじ４１の弛みが考えられる。このため、図６の様に、タイバー２０に段差を設け、その部分に図４の連結棒断面積調整部品４０を取り付けることによって、連結棒断面積調整部品４０のタイバー２０の軸方向の移動が規制されることから、ねじ４１の弛みを防止することも可能である。
上述した実施形態では連結棒断面積調整部品４０をタイバー２０に取り付けたが、図２に示されるタイロッド３０に取り付けるようにしてもよい。この場合、連結棒断面積調整部品４０はフロントプレート３１とリアプレート３２の間の所定箇所のタイロッド３０に取り付ける。
By the way, loosening of the screw 41 can be considered by repetition of the expansion and contraction operation of the tie bar 20 that occurs in association with the mold clamping operation and the mold opening operation. For this reason, as shown in FIG. 6, the tie bar 20 is provided with a step, and the connecting rod cross-sectional area adjusting component 40 shown in FIG. It is possible to prevent loosening of the screw 41 because it is regulated.
In the embodiment described above, the connecting rod cross-sectional area adjusting component 40 is attached to the tie bar 20, but it may be attached to the tie rod 30 shown in FIG. In this case, the connecting rod cross-sectional area adjusting component 40 is attached to the tie rod 30 at a predetermined position between the front plate 31 and the rear plate 32.
＜実施形態２＞
実施形態２を図７を用いて説明する。連結棒１０はタイバー２０あるいはタイロッド３０に対応する。連結棒１０の一つの端面からその長軸方向にあらかじめ沿ってねじ穴１１を開けておく。ねじ穴１１は、固定プラテン２１側あるいはリアプラテン２２側の何れかの連結棒端面に開ける。ねじ穴１１を設けることは空間が形成されたことになるから、このねじ穴１１の空間分だけ連結棒１０の断面積が減ることになる。このねじ穴１１に連結棒断面積調整ボルト１２がねじ込まれる。連結棒断面積調整ボルト１２は、ナット１３によって連結棒１０に固定されており、連結棒１０と連結棒断面積調整ボルト１２とは一体化される。ナット１３は回転阻止部材である。連結棒断面積調整ボルト１２のねじ込み量により連結棒１０の断面積を増減させることが可能である。なお、ねじによる形式は回転動作で行なえるので、連結棒断面積調整ボルト１２のねじ穴１１へのねじ込み量をモータ駆動により自動で制御することも可能である。回転阻止部材としてモータに付属するブレーキを使用することができる。
<Embodiment 2>
A second embodiment will be described with reference to FIG. The connecting rod 10 corresponds to the tie bar 20 or the tie rod 30. A screw hole 11 is formed in advance along the long axis direction from one end face of the connecting rod 10. The screw hole 11 is opened on the end face of the connecting rod on either the stationary platen 21 side or the rear platen 22 side. Providing the screw hole 11 forms a space, so that the cross-sectional area of the connecting rod 10 is reduced by the space of the screw hole 11. The connecting rod cross-sectional area adjusting bolt 12 is screwed into the screw hole 11. The connecting rod cross-sectional area adjusting bolt 12 is fixed to the connecting rod 10 by a nut 13, and the connecting rod 10 and the connecting rod cross-sectional area adjusting bolt 12 are integrated. The nut 13 is a rotation prevention member. It is possible to increase or decrease the cross-sectional area of the connecting rod 10 by the screwing amount of the connecting rod cross-sectional area adjusting bolt 12. Since the screw type can be rotated, the screwing amount of the connecting rod cross-sectional area adjusting bolt 12 into the screw hole 11 can be automatically controlled by motor drive. A brake attached to the motor can be used as the rotation preventing member.
＜実施形態３＞
実施形態３を図８を用いて説明する。図８に示されるように、連結棒１０の一端面からその長軸方向に沿ってあらかじめ穴を開けておく。穴は、固定プラテン２１側あるいはリアプラテン２２側の何れかの連結棒端面に開ける。これによって穴分だけ連結棒１０の断面積を減らすことができる。穴が設けられた連結棒１０の断面積を変更するには、連結棒断面積調整スペーサ１４を挿入するとよい。連結棒断面積調整スペーサ１４の長さや挿入される連結棒断面積調整スペーサ１４の個数は適宜選択される。また、連結棒断面積調整スペーサ１４は連結棒１０にあらかじめ開けられた穴と嵌め合いになっている。連結棒断面積調整スペーサ１４を取り出す為、連結棒断面積調整スペーサ１４には逆ねじ付き空間１５の孔が加工されており、連結棒１０に設けられた穴から引き抜くことが可能である。連結棒断面積調整スペーサ１４を連結棒１０に固定するには、テンションボルト１７とナット１６を使用する。
<Embodiment 3>
A third embodiment will be described with reference to FIG. As shown in FIG. 8, a hole is made in advance from one end face of the connecting rod 10 along the long axis direction. The hole is opened in the end face of the connecting rod on either the fixed platen 21 side or the rear platen 22 side. As a result, the cross-sectional area of the connecting rod 10 can be reduced by the amount of holes. In order to change the cross-sectional area of the connecting rod 10 provided with the hole, the connecting rod cross-sectional area adjusting spacer 14 may be inserted. The length of the connecting rod sectional area adjusting spacer 14 and the number of connecting rod sectional area adjusting spacers 14 to be inserted are appropriately selected. In addition, the connecting rod cross-sectional area adjusting spacer 14 is fitted with a hole that has been drilled in the connecting rod 10 in advance. In order to take out the connecting rod cross-sectional area adjusting spacer 14, the connecting rod cross-sectional area adjusting spacer 14 is processed with a hole in a space 15 with a reverse thread, and can be pulled out from a hole provided in the connecting rod 10. In order to fix the connecting rod cross-sectional area adjusting spacer 14 to the connecting rod 10, a tension bolt 17 and a nut 16 are used.
＜実施形態４＞
固定端２点間距離を変更する実施形態４を図９，図１０を用いて説明する。ここでは連結棒１０の例として型締装置Ｍｃに備わったタイバー２０として説明する。固定プラテン２１とタイバー２０の固定位置の変更を固定端変更部品５０を用いて行う。固定端変更部品５０は、図１０に示されるように、長さＬ３を持ち、タイバー２０の外径と同じ半径の内周面を備えた２つの断面半円環状の部材から構成される。固定端変更部品５０は一端部にフランジ５５を備えている。フランジ５５にはねじ孔５６が設けられている。また、フランジ５５と反対側の筒状本体の端部にはタップ孔５３が設けられている。フランジ５５に設けられたねじ孔５６にねじ５７をねじ込んで２つの断面半円環状の部材を固定プラテン２１の金型取り付け面側に密着させる。また、２つの断面半円環状の部材の側面部に設けられたねじ孔５２にねじ５１をねじ込んでタイバー２０に密着させる。これによって、タイバー２０のタイバー固定端２点間距離がＬ２短くなる。また、図１０のＬ２の長さを変更することによりタイバー２０の固定端位置を変更可能である。あるいは、図９の様に、図４に示される連結棒断面積調整部品４０を連結し、タップ孔４３とタップ孔５３にねじ４４をねじ込んで結合させることも可能である。
<Embodiment 4>
A fourth embodiment for changing the distance between two fixed ends will be described with reference to FIGS. Here, the tie bar 20 provided in the mold clamping device Mc will be described as an example of the connecting rod 10. The fixed position of the fixed platen 21 and the tie bar 20 is changed using the fixed end changing component 50. As shown in FIG. 10, the fixed end changing component 50 has a length L <b> 3 and is composed of two semicircular members having a cross section with an inner peripheral surface having the same radius as the outer diameter of the tie bar 20. The fixed end changing component 50 includes a flange 55 at one end. The flange 55 is provided with a screw hole 56. A tap hole 53 is provided at the end of the cylindrical body opposite to the flange 55. A screw 57 is screwed into a screw hole 56 provided in the flange 55 so that two members having a semicircular cross section are brought into close contact with the mold mounting surface side of the fixed platen 21. Further, the screw 51 is screwed into the screw hole 52 provided in the side surface portion of the two members having a semicircular cross section and is brought into close contact with the tie bar 20. As a result, the distance between the two tie bar fixed ends of the tie bar 20 is shortened by L2. Further, the fixed end position of the tie bar 20 can be changed by changing the length of L2 in FIG. Alternatively, as shown in FIG. 9, the connecting rod cross-sectional area adjusting component 40 shown in FIG. 4 can be connected, and the screw 44 can be screwed into the tap hole 43 and the tap hole 53.
１ プレート
２ プレート
３ プレート
１０ 連結棒
１１ ねじ穴
１２ 連結棒断面積調整ボルト
１３ ナット（回転阻止部材）
１４ 連結棒断面積調整スペーサ
１５ 逆ねじ付き空間
２０ タイバー
２１ 固定プラテン
２２ リアプラテン
２３ 可動プラテン
２４ ギア
２５ ギア
２６ 固定プラテンナット
２７ リアプラテンナット
２８ 金型
３０ タイロッド
３１ フロントプレート
３２ リアプレート
３３ プッシャープレート
３４ 射出シリンダ
３５ ノズル
４０ 連結棒断面積調整部品
４１ ねじ
４２ ねじ孔
４３ タップ孔
４４ ねじ
５０ 固定端変更部品
５１ ねじ
５２ ねじ孔
５３ タップ孔
５５ フランジ
５６ ねじ孔
５７ ねじ
Ｍ 射出成形機
Ｍｂ 機台
Ｍｃ 型締装置
Ｍｉ 射出装置
1 plate 2 plate 3 plate
10 connecting rod 11 screw hole 12 connecting rod cross-sectional area adjustment bolt 13 nut (rotation prevention member)
14 Connecting rod cross section adjustment spacer 15 Space with reverse thread
20 Tie Bar 21 Fixed Platen 22 Rear Platen 23 Movable Platen 24 Gear 25 Gear 26 Fixed Platen Nut 27 Rear Platen Nut 28 Mold
30 Tie rod 31 Front plate 32 Rear plate 33 Pusher plate 34 Injection cylinder 35 Nozzle
40 Connecting rod cross-sectional area adjustment part 41 Screw 42 Screw hole 43 Tap hole 44 Screw
50 Fixed end changing parts 51 Screw 52 Screw hole 53 Tap hole
55 Flange 56 Screw hole 57 Screw
M injection molding machine Mb machine base Mc mold clamping device Mi injection device
Claims (10)
前記タイバーの外周形状に係合する係合面を有し、前記タイバーの材質のヤング率よりも大きい材質からなる筒状部材を前記タイバーに固定部材を用いて固定したタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置。 The fixed platen and the rear platen are connected by a plurality of parallel tie bars, and a movable platen that slides parallel to the tie bars is pressed against the fixed platen by a drive mechanism provided between the rear platen, In a mold clamping device of an injection molding machine for clamping molds attached to respective opposed surfaces of a movable platen and the fixed platen,
There is provided a tie bar extension adjusting portion having an engaging surface that engages with the outer peripheral shape of the tie bar and fixing a cylindrical member made of a material larger than the Young's modulus of the tie bar material to the tie bar using a fixing member. A mold clamping device for an injection molding machine.
前記タイバーの端面にねじ穴を設け、該ねじ穴に調整ボルトを螺合させ、該調整ボルトに回転阻止部材を取り付けたタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置。 The fixed platen and the rear platen are connected by a plurality of parallel tie bars, and a movable platen that slides parallel to the tie bars is pressed against the fixed platen by a drive mechanism provided between the rear platen, In a mold clamping device of an injection molding machine for clamping molds attached to respective opposed surfaces of a movable platen and the fixed platen,
A mold clamping of an injection molding machine, wherein a screw hole is provided in an end face of the tie bar, an adjustment bolt is screwed into the screw hole, and a tie bar elongation adjusting portion is provided with a rotation prevention member attached to the adjustment bolt. apparatus.
前記タイバーの外周形状に係合する係合面を有する筒状本体と、該筒状本体の端面に設けられたフランジ部を有し、該フランジ部を前記固定プラテンに取り付けたタイバー伸び量調整部を設けたことを特徴とする射出成形機の型締装置。 The fixed platen and the rear platen are connected by a plurality of parallel tie bars, and a movable platen that slides parallel to the tie bars is pressed against the fixed platen by a drive mechanism provided between the rear platen, In a mold clamping device of an injection molding machine for clamping molds attached to respective opposed surfaces of a movable platen and the fixed platen,
A cylindrical main body having an engagement surface that engages with the outer peripheral shape of the tie bar, and a flange portion provided on an end surface of the cylindrical main body, and the tie bar extension amount adjusting portion attached to the fixed platen A mold clamping device for an injection molding machine, characterized by comprising:
前記タイロッドの外周形状に係合する係合面を有し、前記タイロッドの材質のヤング率よりも大きい材質からなる筒状部材を前記タイロッドに固定部材を用いて固定したタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置。 Injection molding in which the rear plate is provided with a mechanism for sliding the pusher plate with the injection screw attached parallel to the tie rod by connecting the front plate and the rear plate attached with the injection cylinder with a plurality of parallel tie rods. In the injection device of the machine,
There is provided a tie rod extension adjusting portion having an engaging surface that engages with the outer peripheral shape of the tie rod and fixing a cylindrical member made of a material larger than the Young's modulus of the tie rod material to the tie rod using a fixing member. An injection apparatus for an injection molding machine, characterized in that
前記タイロッドの端部にねじ穴を設け、該ねじ穴に調整ボルトを螺合させ、該調整ボルトを回転阻止部材を取り付けたタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置。 Injection molding in which the rear plate is provided with a mechanism for sliding the pusher plate with the injection screw attached parallel to the tie rod by connecting the front plate and the rear plate attached with the injection cylinder with a plurality of parallel tie rods. In the injection device of the machine,
An injection molding machine characterized in that a screw hole is provided in an end portion of the tie rod, an adjustment bolt is screwed into the screw hole, and a tie rod extension adjusting portion is provided to which the rotation prevention member is attached. apparatus.
前記タイロッドの外周形状に係合する係合面を有する筒状本体と、該筒状本体の端面に設けられたフランジ部を有し、該フランジ部を前記フロントプレートまたは前記リアプレートに取り付けたタイロッド伸び量調整部を設けたことを特徴とする射出成形機の射出装置。 Injection molding in which the rear plate is provided with a mechanism for sliding the pusher plate with the injection screw attached parallel to the tie rod by connecting the front plate and the rear plate attached with the injection cylinder with a plurality of parallel tie rods. In the injection device of the machine,
The tie rod which has the cylindrical main body which has the engagement surface engaged with the outer periphery shape of the said tie rod, and the flange part provided in the end surface of this cylindrical main body, and attached this flange part to the said front plate or the said rear plate. An injection apparatus for an injection molding machine, characterized in that an elongation amount adjusting section is provided.
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