JP4512399B2 - Molding machine - Google Patents

Molding machine Download PDF

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JP4512399B2
JP4512399B2 JP2004111202A JP2004111202A JP4512399B2 JP 4512399 B2 JP4512399 B2 JP 4512399B2 JP 2004111202 A JP2004111202 A JP 2004111202A JP 2004111202 A JP2004111202 A JP 2004111202A JP 4512399 B2 JP4512399 B2 JP 4512399B2
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mold
fixed
movable
molding machine
mounting plate
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JP2005288999A (en
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吉哉 谷口
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Toyo Machinery and Metal Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1742—Mounting of moulds; Mould supports
    • B29C45/1744—Mould support platens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames

Description

本発明は、射出成形機やダイカストマシンなどの成形機に係り、特に、成形機における型開閉メカニズム系にかかわる技術に関するものである。   The present invention relates to a molding machine such as an injection molding machine or a die casting machine, and particularly relates to a technique related to a mold opening / closing mechanism system in the molding machine.

射出成形機などの成形機においては、固定側金型を搭載した固定ダイプレートに対して、可動側金型を搭載した可動ダイプレートを、型開閉用駆動源（型締め用駆動源）の駆動力により複数本のタイバーに沿って前後進させる構成をとるのが、一般的である。周知のように、型締め時には、固定側金型と可動側金型とを所定の型締め力で密着させて、固定側金型と可動側金型とによりキャビティ（成形空間）を形作る必要があり、このため、型締め時には、固定側金型と可動側金型のＰＬ面（離型面）同士が、正確な平行度をもって密着することが望まれる。   In a molding machine such as an injection molding machine, a movable die plate mounted with a movable mold is driven by a mold opening / closing drive source (clamping drive source) with respect to a fixed die plate mounted with a fixed mold. In general, it is configured to move forward and backward along a plurality of tie bars by force. As is well known, at the time of clamping, it is necessary to form a cavity (molding space) between the fixed mold and the movable mold by bringing the fixed mold and the movable mold into close contact with each other with a predetermined clamping force. For this reason, at the time of mold clamping, it is desired that the PL surfaces (release surfaces) of the fixed mold and the movable mold are in close contact with each other with accurate parallelism.

しかしながら、型開閉メカニズム系の加工精度、組立・調整精度を厳密に管理し、かつ、型開閉メカニズム系の固定ダイプレートおよび可動ダイプレートに搭載する金型の加工精度、組立・調整精度を厳密に管理したとしても、製造上避けがたい公差内の加工寸法誤差、組立・調整誤差により、固定側金型のＰＬ面と可動側金型のＰＬ面とを完全な平行にすることは、実質上困難である。   However, the processing accuracy and assembly / adjustment accuracy of the mold opening / closing mechanism system are strictly controlled, and the processing accuracy, assembly / adjustment accuracy of molds mounted on the fixed and movable die plates of the mold opening / closing mechanism system are strictly controlled. Even if it is managed, it is virtually impossible to make the PL surface of the fixed mold and the PL surface of the movable mold completely parallel due to machining dimensional errors and assembly / adjustment errors that are inevitable in manufacturing. Have difficulty.

このため、型閉じ動作において、一方の金型に設けたガイドピンが他方の金型に穿設したガイド穴に入り込むことにより、両金型の位置合せを行うためのガイド機構の寸法精度を出し過ぎると、両金型のＰＬ面同士が完全には平行ではないことから、ガイドピンとガイド穴とがカジリ、ガイド機構の寿命を著しく低下させる。反対に、ガイド機構の寸法精度をカジリが生じないようラフにすると、ガイドピンとガイド穴との間にクリアランスが生じて、両金型の位置合わせ精度を劣化させる。   For this reason, in the mold closing operation, the guide pin provided in one mold enters the guide hole drilled in the other mold, thereby increasing the dimensional accuracy of the guide mechanism for aligning both molds. If it is too long, the PL surfaces of the two molds are not completely parallel, so the guide pins and the guide holes are galling, and the life of the guide mechanism is significantly reduced. On the contrary, if the dimensional accuracy of the guide mechanism is rough so as not to cause galling, a clearance is generated between the guide pin and the guide hole, and the alignment accuracy of both molds is deteriorated.

そこで、射出成形機において、型盤（ダイプレート）の平行度を調整するために、可動盤（可動ダイプレート）に取り付けられ片面が球面加工された固定プレートと、該固定プレートに取り付けられ片面が固定プレートと等しい球面曲率で球面加工されて、固定プレートと球面部分で摺動自在とされた可動プレートとをもち、可動プレートの位置を調整することで、可動盤と固定盤（固定ダイプレート）との平行度を調整するようにした技術が知られている（特許文献１参照）。
特開２００２−３２６２６２号公報 Therefore, in an injection molding machine, in order to adjust the parallelism of the mold platen (die plate), a fixed plate attached to the movable platen (movable die plate) and having one side processed into a spherical surface, and one side attached to the fixed plate The movable plate and fixed platen (fixed die plate) are adjusted by adjusting the position of the movable plate, which has a fixed plate and a movable plate that is slidable on the spherical surface. There is known a technique that adjusts the parallelism with the reference (see Patent Document 1).
JP 2002-326262 A

上記した特許文献１に示された技術は、可動盤と固定盤との平行度を調整するための１つの考え方ではあるが、可動プレートの位置調整は、調整ネジ用のロックナットを緩めて調整ネジを回すことで行われ、調整後はロックナットを締付けるようになっているので、調整後には可動プレートは一切摺動できない。   Although the technique disclosed in Patent Document 1 described above is one idea for adjusting the parallelism between the movable platen and the fixed platen, the movable plate position is adjusted by loosening the lock nut for the adjustment screw. This is done by turning the screw. After the adjustment, the lock nut is tightened, so that the movable plate cannot slide at all after the adjustment.

しかしながら、射出成形機などの成形機においては、型開閉メカニズム系の各部の温度は、非運転時と連続成形運転時とで異なり、各部の微妙の膨張の差により、非運転時には平行であったものが、連続成形運転時には平行度が劣化することがあり得る。特に、横型（可動ダイプレートが水平に移動するタイプ）の型開閉メカニズム系では、連続成形運転時に上側の温度と下側の温度に差が生じ易く（５℃程度の温度差は簡単に生じる）、このため、上側と下側では膨張の度合いが微妙に異なり、固定側金型のＰＬ面と可動側金型のＰＬ面との平行度を狂わる。   However, in a molding machine such as an injection molding machine, the temperature of each part of the mold opening / closing mechanism system is different during non-operation and continuous molding operation, and is parallel during non-operation due to a subtle expansion difference of each part. However, the parallelism may deteriorate during continuous molding operation. In particular, in a horizontal mold (movable die plate moving type) mold opening / closing mechanism system, a difference easily occurs between the upper temperature and the lower temperature during continuous molding operation (a temperature difference of about 5 ° C. is easily generated). Therefore, the degree of expansion is slightly different between the upper side and the lower side, and the parallelism between the PL surface of the fixed side mold and the PL surface of the movable side mold is distorted.

また、横型の型開閉メカニズム系では、型締め時に固定ダイプレートが局部的に微小に変位することが、固定側金型のＰＬ面と可動側金型のＰＬ面との平行度を狂わせ、このことが精密成形には大いに問題となる。この型締め時の固定ダイプレートの微小変位について、説明する。   Also, in the horizontal mold opening / closing mechanism system, the fixed die plate is slightly displaced locally during mold clamping, which causes the parallelism between the PL surface of the fixed mold and the PL surface of the movable mold to be out of order. This is a big problem for precision molding. The minute displacement of the fixed die plate at the time of clamping will be described.

図２は、従来の射出成形機の横型の型開閉メカニズム系の要部構成を示しており、図２において、１１１はベースフレーム、１１２はその下部をベースフレーム１１１に固定された固定ダイプレート、１１３は固定ダイプレート１１２に搭載された固定側金型、１１４は図示せぬトグルリンク機構により前後進駆動される可動ダイプレート、１１５は可動ダイプレート１１４に搭載された可動側金型、１１６は、固定ダイプレート１１２の４隅と図示せぬ保持プレートの４隅との間にそれぞれ架け渡らされた４本のタイバー、１１７はベースプレート１１１上に固定されたレール部材、１１８は、可動ダイプレート１１４の下部に取り付けられ、レール部材１１７上を直線運動可能な直動部材である。   FIG. 2 shows a configuration of a main part of a horizontal mold opening / closing mechanism system of a conventional injection molding machine. In FIG. 2, 111 is a base frame, 112 is a fixed die plate whose lower part is fixed to the base frame 111, 113 is a fixed die mounted on the fixed die plate 112, 114 is a movable die plate that is driven back and forth by a toggle link mechanism (not shown), 115 is a movable die mounted on the movable die plate 114, and 116 is The four tie bars are respectively bridged between the four corners of the fixed die plate 112 and the four corners of the holding plate (not shown), 117 is a rail member fixed on the base plate 111, and 118 is the movable die plate 114. The linear motion member is attached to the lower portion of the rail and can linearly move on the rail member 117.

図２に示した構成においては、固定ダイプレート１１２はその下部をベースフレーム１１１に固定されているため、図２に示した型締め状態では、公知のように型締めに伴うトグルリンク機構の突っ張りによりタイバー１１６が伸ばされ、このタイバー１１６の弾性回復力により型締め力を発生させるようになっているので、固定ダイプレート１１２には、タイバー１１６によって図示左行方向の力が加えられ、図２に誇張して図示したように、固定ダイプレート１１２は固定された下側に対してその上側が変形して、これにより、両金型１１３、１１５同士の平行度が劣化するという問題がある。   In the configuration shown in FIG. 2, the lower portion of the fixed die plate 112 is fixed to the base frame 111. Therefore, in the mold clamping state shown in FIG. The tie bar 116 is extended by this, and a clamping force is generated by the elastic recovery force of the tie bar 116. Therefore, a force in the left-hand direction in the figure is applied to the fixed die plate 112 by the tie bar 116, and FIG. As shown in an exaggerated manner, the fixed die plate 112 has a problem that the upper side of the fixed die plate 112 is deformed relative to the fixed lower side, thereby degrading the parallelism between the molds 113 and 115.

さらに、上記したような、熱による膨張の差や、固定ダイプレートの局部的な微小変位は、連続成形運転時の各ショットで一定でないことも考えられる。   Further, the difference in expansion due to heat and the local minute displacement of the fixed die plate as described above may not be constant in each shot during the continuous molding operation.

本発明は上記の点に鑑みなされたもので、その目的とするところは、連続成形運転時において各ショット毎に固定側金型のＰＬ面と可動側金型のＰＬ面との平行度を自動的に調整可能とし、以って、高精度の成形品を成形可能とすることにある。また、本発明の目的とするところは、金型同士の位置合せを行うためのガイド機構の寿命の延命化を図ることにある。   The present invention has been made in view of the above points, and its object is to automatically adjust the parallelism between the PL surface of the fixed mold and the PL surface of the movable mold for each shot during continuous molding operation. Therefore, it is possible to form a highly accurate molded product. Another object of the present invention is to extend the life of a guide mechanism for aligning dies.

本発明は上記した目的を達成するため、固定側金型を搭載した固定ダイプレートに対して、可動側金型を搭載した可動ダイプレートを、型開閉用駆動源の駆動力により複数本のタイバーに沿って前後進させる構成をとる成形機において、前記可動ダイプレートと前記可動側金型が取り付けられた金型取り付けプレートとを、外輪部と該外輪部に対して全方向に回動可能に組み合わされた内輪部とからなり、型開き状態において平行度が出ていない場合にも、型閉じ状態及び型締め状態において前記固定側金型のＰＬ面と前記可動側金型のＰＬ面とが自動的に平行となるように調整する球面軸受を介して一体に連結した、構成をとる。
また、前記金型取り付けプレートは、前記タイバーにクリアランスをもって遊挿された、構成をとる。
さらに、前記可動ダイプレートは、水平配置されたレール部材に係合した直動部材上に固定され、前記金型取り付けプレートは、前記レール部材に係合した直動部材に、球面軸受を介して支承された、構成をとる。
さらにまた、前記金型取り付けプレートと前記球面軸受の外輪部又は内輪部との間に、ロードセルを備えた、構成をとる。 In order to achieve the above-described object, the present invention provides a movable die plate having a movable side mold mounted thereon with a plurality of tie bars by a driving force of a mold opening / closing drive source. In which the movable die plate and the mold mounting plate to which the movable mold is attached can be rotated in all directions with respect to the outer ring portion and the outer ring portion. Even when the parallelism is not obtained in the mold open state, the PL surface of the fixed mold and the PL surface of the movable mold are in the mold closed state and the mold clamped state. It is configured to be integrally connected via a spherical bearing that automatically adjusts to be parallel.
The mold mounting plate is configured to be loosely inserted into the tie bar with a clearance.
Further, the movable die plate is fixed on a linear motion member engaged with a horizontally disposed rail member, and the mold mounting plate is attached to the linear motion member engaged with the rail member via a spherical bearing. Takes a supported configuration.
Furthermore, a configuration is adopted in which a load cell is provided between the mold mounting plate and the outer ring portion or the inner ring portion of the spherical bearing.

本発明によれば、可動ダイプレートに球面軸受を介して連結された金型取り付けプレートに、可動側金型が取り付けられているので、金型取り付けプレートおよび可動側金型は、可動ダイプレートに対して全方向に回動変位すること可能で、したがって、開開き状態においては、固定側金型のＰＬ面と可動側金型のＰＬ面とが平行でなくても、型閉じ動作において、一方の金型に設けたガイドピンが他方の金型に穿設したガイド穴（ガイド穴内のローラブッシュ）に入り込むことにより、固定側金型のＰＬ面に対して可動側金型のＰＬ面が平行となるように、金型取り付けプレートおよび可動側金型が回動変位し、型締め状態では、固定側金型のＰＬ面と可動側金型のＰＬ面とは平行な状態をとる。また、型締め状態において、固定ダイプレートに局部的な微小変位を生じても、同様に、固定側金型のＰＬ面に対して可動側金型のＰＬ面が平行となるように、金型取り付けプレートおよび可動側金型が回動変位し、固定側金型のＰＬ面と可動側金型のＰＬ面とは平行な状態をとる。よって、開開き状態において両金型の平行度が出ていなくても、また、型締め状態において固定ダイプレートに局部的な微小変位を生じても、あるいはまた、各ショット毎の開開き状態における両金型の平行度のバラツキ量の如何や、各ショット毎の型締め状態における固定ダイプレートの局部的な微小変位のバラツキ量の如何を問わず、連続成形運転時における各ショット毎の型締め時には、自動的に両金型を平行に保つことができ、以って、高精度の成形品を成形することが可能となる。
また、両金型の位置合せを行うためのガイド機構（ガイドピン、ガイド穴）の寸法精度を高精度なものにしても、金型取り付けプレートおよび可動側金型が回動変位することで、ガイドピンとガイド穴とがカジルことがなくなり、金型同士の位置合せを行うためのガイド機構の寿命の延命化を図ることができる。
さらに、型開閉メカニズム系の加工精度、組立・調整精度や、固定ダイプレートおよび可動ダイプレートに搭載する金型の加工精度、組立・調整精度を、ある程度緩和することが可能となる。 According to the present invention, since the movable side mold is attached to the mold mounting plate connected to the movable die plate via the spherical bearing, the mold mounting plate and the movable side mold are attached to the movable die plate. On the other hand, it can be displaced in all directions. Therefore, in the open state, even if the PL surface of the fixed mold and the PL surface of the movable mold are not parallel, When the guide pin provided in one mold enters the guide hole (roller bush in the guide hole) drilled in the other mold, the PL surface of the movable mold is parallel to the PL surface of the fixed mold. Thus, the mold mounting plate and the movable mold are rotated and displaced, and in the mold clamping state, the PL surface of the fixed mold and the PL surface of the movable mold are parallel. Further, even when a small local displacement occurs in the fixed die plate in the mold clamping state, the mold is similarly set so that the PL surface of the movable mold is parallel to the PL surface of the fixed mold. The mounting plate and the movable die are rotated and displaced, and the PL surface of the fixed die and the PL surface of the movable die are in a parallel state. Therefore, even if the parallelism between the two dies is not obtained in the open state, or even if a small local displacement is generated in the fixed die plate in the clamped state, or in the open state for each shot. Regardless of the amount of variation in the parallelism of both molds and the amount of local minute displacement of the fixed die plate in the mold clamping state for each shot, mold clamping for each shot during continuous molding operation Sometimes it is possible to automatically keep both molds in parallel, thereby making it possible to mold a highly accurate molded product.
Moreover, even if the dimensional accuracy of the guide mechanism (guide pin, guide hole) for aligning both molds is made high, the mold mounting plate and the movable side mold are rotationally displaced, The guide pin and the guide hole are free from cascading, and the life of the guide mechanism for aligning the dies can be extended.
Furthermore, the processing accuracy and assembly / adjustment accuracy of the mold opening / closing mechanism system, and the processing accuracy and assembly / adjustment accuracy of the molds mounted on the fixed die plate and the movable die plate can be relaxed to some extent.

以下、本発明の実施の形態を、図面を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施形態（以下、本実施形態と記す）に係る横型の射出成形機における、型開閉メカニズム系の構成を簡略化して示す一部破断した要部正面図である。   FIG. 1 is a partially cutaway front view of a main part of a horizontal injection molding machine according to an embodiment of the present invention (hereinafter referred to as the present embodiment) showing a simplified configuration of a mold opening / closing mechanism system.

図１において、１はベースフレーム、２は、ベースフレーム１上にその下端を固定された固定ダイプレート、３は、型開閉駆動源である図示せぬ型締め用サーボモータなどを搭載した図示せぬ保持プレート（テールストック）の４隅と、固定ダイプレート２の４隅との間に架け渡された４本のタイバー、４は、タイバー３に挿通・案内されて、図示せぬ型締め用サーボモータの回転を直線運動に変換する図示せぬボールネジ機構により駆動される、図示せぬ公知のトグルリンク機構によって前後進される可動ダイプレート、５は、その外輪部５ａを可動ダイプレート４に固定された大径リング状の球面軸受、６は、球面軸受５の外輪部５ａに対して全方位に回動可能な球面軸受５の内輪部５ｂに、その一端面を固定されたロードセル、７は、ロードセル６の他端面に固定され、タイバー３に所定のクリアランス（例えば、０．５ｍｍ程度）をもって遊挿された金型取り付けプレートである。   In FIG. 1, 1 is a base frame, 2 is a fixed die plate whose lower end is fixed on the base frame 1, and 3 is a servomotor for clamping a mold (not shown) that is a mold opening / closing drive source. The four tie bars 4 spanned between the four corners of the holding plate (tailstock) and the four corners of the fixed die plate 2 are inserted into and guided by the tie bar 3 for clamping the mold (not shown). A movable die plate 5 that is driven by a not-shown toggle link mechanism (not shown), which is driven by a ball screw mechanism (not shown) that converts the rotation of the servo motor into a linear motion, has an outer ring portion 5 a as the movable die plate 4. A fixed large-diameter ring-shaped spherical bearing 6 is a load cell having one end face fixed to an inner ring portion 5b of the spherical bearing 5 that can rotate in all directions with respect to the outer ring portion 5a of the spherical bearing 5. Is Fixed to the other end face of the Doseru 6, a predetermined clearance tie bar 3 (for example, about 0.5 mm) is a mold mounting plate which is loosely inserted with.

また、８は、ベースフレーム１上に固設された平行な１対のレール部材、９は、可動ダイプレート４の下端に固定され、レール部材２上を直線移動可能なようにレール部材２に係合された直動部材、１０は、取り付けプレート７の下部に間接的に取り付けられ、レール部材８上を直線移動可能なようにレール部材２に係合された直動部材、１１は、その内輪部１１ｂを直動部材１０に固定され、内輪部１１ｂに対して全方位に回動可能な外輪部１１ａを、金型取り付けプレート７の下端に固定された小径リング状の球面軸受である。   8 is a pair of parallel rail members fixed on the base frame 1, and 9 is fixed to the lower end of the movable die plate 4, so that the rail member 2 can be moved linearly on the rail member 2. The engaged linear motion members 10 are indirectly attached to the lower part of the mounting plate 7, and are linear motion members 11 engaged with the rail member 2 so as to be linearly movable on the rail member 8. This is a small-diameter ring-shaped spherical bearing in which the inner ring portion 11 b is fixed to the linear motion member 10, and the outer ring portion 11 a that can rotate in all directions with respect to the inner ring portion 11 b is fixed to the lower end of the mold mounting plate 7.

また、１２は固定ダイプレート２に固定された固定側金型、１２ａは、固定側金型１２の主体部に対して抜け落ちぬように前後動可能に取り付けられ、図示せぬバネにより図１で左行方向の偏倚習性を付与された固定側中子金型、１３は固定側金型１２に穿設されたガイド穴、１４はガイド穴１３に嵌め込まれたローラブッシュ、１５は金型取り付けプレート７に固定された可動側金型、１６は、可動側金型１５に植設・固定され、ガイド穴１３内のローラブッシュ１４に嵌り込むことが可能な、先端にテーパー部を形成したガイドピンである。   Reference numeral 12 denotes a fixed die fixed to the fixed die plate 2, and 12 a is attached to the main part of the fixed die 12 so as not to fall off, and is attached by a spring (not shown) in FIG. Fixed-side core mold imparted with a bias in the left-hand direction, 13 is a guide hole drilled in the fixed-side mold 12, 14 is a roller bush fitted in the guide hole 13, and 15 is a mold mounting plate. A movable die 16 fixed to 7 is a guide pin 16 which is implanted and fixed in the movable die 15 and can be fitted into the roller bush 14 in the guide hole 13 and has a tapered portion at the tip. It is.

本実施形態では上記のような構成をとることで、可動ダイプレート４に対して、ロードセル６と金型取り付けプレート７と可動側金型１５とは一体となって、全方位に所定量だけ回動可能となっている。すなわち、ロードセル６は、大径リング状の球面軸受５の内輪部５ｂと一体であるので、球面軸受５の固定された外輪部５ａに対して、内輪部５ｂと一体となってロードセル６が回動できることと、金型取り付けプレート７は、小リング状の球面軸受１１の外輪部１１ａと一体であるので、球面軸受１１の固定された内輪部１１ａに対して、外輪部１１ａと一体となって金型取り付けプレート７が回動できることとが、相俟って、ロードセル６と金型取り付けプレート７と可動側金型１５とは一体となって、タイバー３と金型取り付けプレート７との間のクリアランスが許容する範囲で、全方位に所定量だけ回動可能であるようになっている。   In the present embodiment, by adopting the above-described configuration, the load cell 6, the mold mounting plate 7, and the movable mold 15 are integrated with the movable die plate 4 and rotated by a predetermined amount in all directions. It is possible to move. That is, since the load cell 6 is integral with the inner ring portion 5b of the spherical bearing 5 having a large diameter ring shape, the load cell 6 is rotated integrally with the inner ring portion 5b with respect to the outer ring portion 5a to which the spherical bearing 5 is fixed. Since the mold mounting plate 7 is integral with the outer ring portion 11a of the small ring-shaped spherical bearing 11, the mold mounting plate 7 is integral with the outer ring portion 11a with respect to the inner ring portion 11a to which the spherical bearing 11 is fixed. Combined with the fact that the mold mounting plate 7 can rotate, the load cell 6, the mold mounting plate 7, and the movable mold 15 are integrated with each other between the tie bar 3 and the mold mounting plate 7. As long as the clearance allows, it can be rotated by a predetermined amount in all directions.

なお、金型取り付けプレート７の下端側に、球面軸受１１および直動部材１０を設けた所以は、比較的に重量の嵩む金型取り付けプレート７、可動側金型１５を安定的に支承するためであるが、金型取り付けプレート７、可動側金型１５が小型・軽量である場合には、球面軸受１１および直動部材１０を割愛して、金型取り付けプレート７をロードセル６のみで保持させるようにしてもよい。   The reason why the spherical bearing 11 and the linear motion member 10 are provided on the lower end side of the mold mounting plate 7 is to stably support the mold mounting plate 7 and the movable mold 15 which are relatively heavy. However, when the mold mounting plate 7 and the movable mold 15 are small and light, the spherical bearing 11 and the linear motion member 10 are omitted, and the mold mounting plate 7 is held only by the load cell 6. You may do it.

また、球面軸受５の内輪部５ｂと金型取り付けプレート７との間にロードセル６を介在させた所以は、ロードセル６によって型締め圧力を良好に検出するためであるが、型締め圧力を検出するためのロードセル６の配置個所や形状は、図示した例に限られるものではなく、球面軸受５の内輪部５ｂに金型取り付けプレート７を直接固定するようにしてもよい。   The reason why the load cell 6 is interposed between the inner ring portion 5b of the spherical bearing 5 and the mold mounting plate 7 is to detect the mold clamping pressure with the load cell 6, but to detect the mold clamping pressure. The location and shape of the load cell 6 for this purpose are not limited to the illustrated example, and the mold mounting plate 7 may be directly fixed to the inner ring portion 5 b of the spherical bearing 5.

また、金型取り付けプレート７にタイバー３に遊挿させた所以は、比較的に重量の嵩む金型取り付けプレート７、可動側金型１５を安定的に摺動・ガイドするためであるが、金型取り付けプレート７、可動側金型１５が小型・軽量である場合には、金型取り付けプレート７はタイバー３に挿通させる必要はない。   The reason why the tie bar 3 is loosely inserted into the mold mounting plate 7 is to stably slide and guide the mold mounting plate 7 and the movable mold 15 which are relatively heavy. When the mold mounting plate 7 and the movable mold 15 are small and light, the mold mounting plate 7 does not need to be inserted through the tie bar 3.

次に、本実施形態の動作を説明する。   Next, the operation of this embodiment will be described.

図１に示す構成において、型開き状態から型閉じを行う際には、図示せぬ型締め用サーボモータを所定方向に回転させることで図示せぬボールネジ機構の直線移動部材を図１で右行方向に前進させて、図示せぬトグルリンク機構を伸張駆動し、可動ダイプレート４、球面軸受５、ロードセル６、金型取り付けプレート７、可動側金型１５を、図１で右行方向に前進駆動する。この型閉じ動作により、可動側金型１５が固定側金型１２に近づき、可動側金型１５が所定位置まで前進すると、可動側金型１５のガイドピン１６が固定側金型１２のローラブッシュ１４に入り込む。これによって、たとえ開開き状態において両金型１３、１５の平行度が出ていなくても、固定側金型１２のＰＬ面に対して可動側金型１５のＰＬ面が平行となるように、ロードセル６と金型取り付けプレート７と可動側金型１５とは一体となって回動し、固定側金型１２のＰＬ面に対して可動側金型１５のＰＬ面が平行となるように自動的に調整される。また、型閉じ後の型締め状態において、前記したように、固定ダイプレート２に局部的な微小変位を生じても、同様に、固定側金型１２のＰＬ面に対して可動側金型１５のＰＬ面が平行となるように、ロードセル６と金型取り付けプレート７と可動側金型１５とは一体となって回動し、固定側金型１２のＰＬ面に対して可動側金型１５のＰＬ面が平行となるように自動的に調整される。   In the configuration shown in FIG. 1, when closing the mold from the mold open state, a linear moving member of a ball screw mechanism (not shown) is moved to the right in FIG. 1 by rotating a servo motor for clamping (not shown) in a predetermined direction. The toggle link mechanism (not shown) is driven to extend, and the movable die plate 4, the spherical bearing 5, the load cell 6, the mold mounting plate 7, and the movable side mold 15 are advanced in the right direction in FIG. To drive. By this mold closing operation, when the movable mold 15 approaches the fixed mold 12 and the movable mold 15 advances to a predetermined position, the guide pin 16 of the movable mold 15 is moved to the roller bush of the fixed mold 12. 14 Thereby, even if the parallelism of both the molds 13 and 15 is not given in the open state, the PL surface of the movable side mold 15 is parallel to the PL surface of the fixed side mold 12. The load cell 6, the mold mounting plate 7, and the movable mold 15 are rotated together so that the PL plane of the movable mold 15 is parallel to the PL plane of the fixed mold 12. Adjusted. Further, even when a small local displacement occurs in the fixed die plate 2 in the mold clamping state after the mold is closed, similarly, the movable side mold 15 with respect to the PL surface of the fixed side mold 12 is used. The load cell 6, the mold mounting plate 7, and the movable mold 15 are rotated together so that the PL surfaces of the movable mold 15 are parallel to each other, and the movable mold 15 is moved with respect to the PL surface of the fixed mold 12. It is automatically adjusted so that the PL planes of these are parallel.

よって、開開き状態において両金型１２、１５の平行度が出ていなくても、また、型締め状態において固定ダイプレート２に局部的な微小変位を生じても、あるいはまた、各ショット毎の開開き状態における両金型１２、１５の平行度のバラツキ量の如何や、各ショット毎の型締め状態における固定ダイプレート２の局部的な微小変位のバラツキ量の如何を問わず、連続成形運転時における各ショット毎の型締め時には、両金型を自動的に平行に保つことができ、以って、高精度の成形品を成形することが可能となる。   Therefore, even if the parallelism of both the molds 12 and 15 is not obtained in the open state, or when a small local displacement is generated in the fixed die plate 2 in the mold clamping state, or, for each shot, Continuous molding operation regardless of the amount of variation in the parallelism between the dies 12 and 15 in the open state and the amount of local minute displacement of the fixed die plate 2 in the mold clamping state for each shot At the time of mold clamping for each shot at the time, both molds can be automatically kept in parallel, so that a highly accurate molded product can be molded.

なお、上述した実施形態では、球面軸受５の外輪部５ａを可動ダイプレート４に固定し、球面軸受５の内輪部５ｂに金型取り付けプレート７に連結した構成としたが、球面軸受５の内輪部５ｂを可動ダイプレート４に固定し、球面軸受５の外輪部５ａに金型取り付けプレート７に連結した構成としてもよい。   In the embodiment described above, the outer ring portion 5a of the spherical bearing 5 is fixed to the movable die plate 4 and is connected to the inner ring portion 5b of the spherical bearing 5 with the mold mounting plate 7. The portion 5 b may be fixed to the movable die plate 4 and connected to the mold attachment plate 7 to the outer ring portion 5 a of the spherical bearing 5.

また、上述した実施形態では、横型の型開閉メカニズム系への適用を例にとったが、本発明は縦型の型開閉メカニズム系への適用も可能である。この場合には、図１中の構成要素８、９、１０、１１を割愛することが可能となる。   In the above-described embodiment, application to a horizontal mold opening / closing mechanism system is taken as an example, but the present invention can also be applied to a vertical mold opening / closing mechanism system. In this case, the components 8, 9, 10, and 11 in FIG. 1 can be omitted.

また、上述した実施形態では、射出成形機の型開閉メカニズム系への適用を例にとったが、本発明はダイカストマシンの型開閉メカニズム系への適用も可能である。   In the above-described embodiment, the application to the mold opening / closing mechanism system of the injection molding machine is taken as an example. However, the present invention can also be applied to the mold opening / closing mechanism system of the die casting machine.

本発明の一実施形態に係る射出成形機における型開閉メカニズム系の構成を簡略化して示す一部破断した要部正面図である。It is the principal part front view partly fractured | ruptured which shows simply the structure of the die opening / closing mechanism system in the injection molding machine which concerns on one Embodiment of this invention. 従来の射出成形機の横型の型開閉メカニズム系の要部構成を示す説明図である。It is explanatory drawing which shows the principal part structure of the horizontal type | mold mold opening / closing mechanism system of the conventional injection molding machine.

符号の説明Explanation of symbols

１ ベースフレーム
２ 固定ダイプレート
３ タイバー
４ 可動ダイプレート
５ 球面軸受
５ａ 外輪部
５ｂ 内輪部
６ ロードセル
７ 金型取り付けプレート
８ レール部材
９ 直動部材
１０ 直動部材
１１ 球面軸受
１１ａ 外輪部
１１ｂ 内輪部
１２ 固定側金型
１３ ガイド穴
１４ ローラブッシュ
１５ 可動側金型
１６ ガイドピン DESCRIPTION OF SYMBOLS 1 Base frame 2 Fixed die plate 3 Tie bar 4 Movable die plate 5 Spherical bearing 5a Outer ring part 5b Inner ring part 6 Load cell 7 Mold mounting plate 8 Rail member 9 Direct acting member 10 Direct acting member 11 Spherical bearing 11a Outer ring part 11b Inner ring part 12 Fixed die 13 Guide hole 14 Roller bush 15 Movable die 16 Guide pin

Claims (4)

固定側金型を搭載した固定ダイプレートに対して、可動側金型を搭載した可動ダイプレートを、型開閉用駆動源の駆動力により複数本のタイバーに沿って前後進させる構成をとる成形機において、
前記可動ダイプレートと前記可動側金型が取り付けられた金型取り付けプレートとを、外輪部と該外輪部に対して全方向に回動可能に組み合わされた内輪部とからなり、型開き状態において平行度が出ていない場合にも、型閉じ状態及び型締め状態において前記固定側金型のＰＬ面と前記可動側金型のＰＬ面とが自動的に平行となるように調整する球面軸受を介して一体に連結したことを特徴とする成形機。 A molding machine that has a configuration in which a movable die plate mounted with a movable mold is moved back and forth along a plurality of tie bars by a driving force of a mold opening / closing drive source with respect to a fixed die plate mounted with a fixed mold. In
The movable die plate and the mold mounting plate to which the movable side mold is mounted are composed of an outer ring part and an inner ring part that is rotatable in all directions with respect to the outer ring part. A spherical bearing that adjusts so that the PL surface of the fixed mold and the PL surface of the movable mold are automatically parallel in the mold closed state and the mold clamped state even when parallelism is not achieved. A molding machine characterized in that they are integrally connected through a joint. 請求項１に記載の成形機において、
前記金型取り付けプレートは、前記タイバーにクリアランスをもって遊挿されていることを特徴とする成形機。 The molding machine according to claim 1,
The molding machine, wherein the mold mounting plate is loosely inserted into the tie bar with a clearance. 請求項２に記載の成形機において、
前記可動ダイプレートは、水平配置されたレール部材に係合した直動部材上に固定され、前記金型取り付けプレートは、前記レール部材に係合した直動部材に、球面軸受を介して支承されたことを特徴とする成形機。 The molding machine according to claim 2,
The movable die plate is fixed on a linear motion member engaged with a horizontally disposed rail member, and the mold mounting plate is supported on the linear motion member engaged with the rail member via a spherical bearing. A molding machine characterized by that. 請求項１に記載の成形機において、
前記金型取り付けプレートと前記球面軸受の外輪部又は内輪部との間に、ロードセルを備えたことを特徴とする成形機。 The molding machine according to claim 1,
A molding machine comprising a load cell between the mold mounting plate and an outer ring portion or an inner ring portion of the spherical bearing.
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