JP7363489B2 - Mold opening/closing control method and control device for mold clamping device - Google Patents

Mold opening/closing control method and control device for mold clamping device Download PDF

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JP7363489B2
JP7363489B2 JP2020000425A JP2020000425A JP7363489B2 JP 7363489 B2 JP7363489 B2 JP 7363489B2 JP 2020000425 A JP2020000425 A JP 2020000425A JP 2020000425 A JP2020000425 A JP 2020000425A JP 7363489 B2 JP7363489 B2 JP 7363489B2
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真人 吉鶴
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本発明はダイカストマシン、射出成型機などの金型で、特に中子を有する金型における型締装置の金型開閉制御方法及び制御装置に関する。 The present invention relates to molds for die casting machines, injection molding machines, etc., and particularly to a mold opening/closing control method and control device for a mold clamping device in a mold having a core.

一般に複雑な製品形状、例えば凹部、横穴、突起などいわゆるアンダーカット形状を有する成形品は、金型内に中子を配置して、成形後に引き抜き動作を行うことにより所望の形状に形成している。
図６は中子を備えた金型の型閉工程の説明図である。同図（１）は、中子１２と、中子１２の移動装置１３を備えた可動金型５の型開状態を示している。同図（２）に示すように中子１２の移動装置１３を用いて中子１２を金型内に配置する。そして同図（３）のように型閉動作を行い、可動金型５を固定金型７まで移動させる。同図（４）は鋳造工程を示し、同図（５）では型開動作を行う。そして同図（６）に示す中子抜き動作を行ってから、前述の型開状態の可動金型５の型閉動作開始位置まで戻した後、成形品の取出しを行う。
ここで型締装置の稼働効率化（装置の停止時間を短くして生産数（稼働時間）を増加するなど）のため型開閉時間の短縮化が求められている。従来から金型の開閉速度を高速化し、あるいは中子入動作と型閉じ動作を同時並行するなどが行われていた。しかし中子を備えた金型は、中子が金型内に完全に入りきった後でなければ型閉じができない場合があり、同時並行のタイミングが悪いと中子と金型が干渉して破損するおそれがあった。 Generally, molded products with complex product shapes, such as so-called undercut shapes such as recesses, side holes, and protrusions, are formed into the desired shape by placing a core in a mold and performing a drawing operation after molding. .
FIG. 6 is an explanatory diagram of the mold closing process of a mold equipped with a core. FIG. 1 (1) shows the movable mold 5 including the core 12 and the moving device 13 for the core 12 in an open state. As shown in FIG. 2(2), the core 12 is placed in the mold using the core 12 moving device 13. Then, as shown in FIG. 3(3), a mold closing operation is performed to move the movable mold 5 to the fixed mold 7. Figure (4) shows the casting process, and Figure (5) shows the mold opening operation. After performing the core removal operation shown in FIG. 6(6), the movable mold 5 in the mold open state is returned to the mold closing operation starting position, and then the molded product is taken out.
Here, in order to improve the operating efficiency of the mold clamping device (such as increasing the production volume (operating time) by shortening the stop time of the device), there is a need to shorten the mold opening/closing time. Conventionally, methods have been used to increase the opening and closing speed of the mold, or to simultaneously perform core insertion and mold closing operations. However, molds equipped with a core may not be able to be closed until the core has completely entered the mold, and if the timing is wrong, the core and the mold may interfere. There was a risk of damage.

特許文献１に開示の技術は、金型の開閉位置を検知するセンサと、中子の位置を検知するセンサを備え、型締動作中に設定した判定点（中子入工程が完了する少し手前の位置）において、中子入工程の完了が否の場合、同判定点での移動金型の中子入工程が完了するまでの型締用のサーボモータを駆動する時間をＴとし、中子入工程完了までの余り時間をｔとしたときＴ－ｔ≧０の判定を行って、判定結果に基づいて移動金型を前進又は停止する制御を行っている。
しかしながら、中子入工程完了までの余り時間をあらかじめ定めた必要時間で算出しているため、何等かの理由によって中子入動作が突然予想よりも遅くなった場合などに対処できない（中子と金型が干渉する）おそれがある。
また金型と中子の干渉を防止するためには、中子と金型が干渉する位置が重要となるが、そのような概念が特許文献１には開示されていない。 The technology disclosed in Patent Document 1 is equipped with a sensor that detects the opening/closing position of the mold and a sensor that detects the position of the core. position), if the core insertion process is not completed, T is the time to drive the servo motor for mold clamping until the core insertion process of the movable mold is completed at the same determination point, and When the remaining time until the completion of the entering process is t, a determination is made that Tt≧0, and control is performed to advance or stop the movable mold based on the determination result.
However, since the remaining time until the core insertion process is completed is calculated based on a predetermined required time, it is not possible to deal with cases where the core insertion process suddenly becomes slower than expected for some reason. There is a risk of mold interference.
Further, in order to prevent interference between the mold and the core, the position where the core and the mold interfere is important, but such a concept is not disclosed in Patent Document 1.

特開２００６－２８９４１０号公報JP2006-289410A

本発明が解決しようとする課題は、上記従来技術の問題点に鑑み、金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の開閉時間を短縮化しつつ、中子と金型の干渉を回避できる安全な型締装置の金型開閉制御方法及び制御装置を提供することにある。 The problem to be solved by the present invention is to shorten the opening and closing time of a mold clamping device that includes a core in a mold and performs a core insertion process and a mold closing process in parallel, in view of the problems of the prior art described above. An object of the present invention is to provide a safe mold opening/closing control method and control device for a mold clamping device that can avoid interference between a core and a mold.

本発明は、上記課題を解決するための第１の手段として、金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度とし、前記中子入工程が完了した後の前記移動速度を第２速度とし、前記第２速度の最高速度は前記第１速度の最高速度よりも速く設定し、前記中子入工程が完了していないとき前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定することを特徴とする型締装置の金型開閉制御方法を提供することにある。
上記第１の手段によれば、型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、金型との干渉を確実に回避することができ安全な型閉工程が行える。 As a first means for solving the above problems, the present invention provides a mold opening/closing control method for a mold clamping device that includes a core in the mold and performs a core insertion process and a mold closing process in parallel.
The moving speed of the movable mold during the mold closing process from the start of the mold closing operation of the mold to the completion of the core inserting process is defined as a first speed, and the moving speed after the core inserting process is completed is the first speed. A second speed is set, and the maximum speed of the second speed is set higher than the maximum speed of the first speed, and mold interference occurs when the mold and the core interfere when the core insertion process is not completed. An object of the present invention is to provide a mold opening/closing control method for a mold clamping device, characterized in that it is determined whether the movable mold has reached a position.
According to the first means, interference with the mold can be reliably avoided by starting from the mold interference position where the mold and the core interfere in the core insertion process during the mold closing process. A safe mold closing process can be performed.

本発明は、上記課題を解決するための第２の手段として、金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度で移動する第１型閉工程と、
前記中子入工程が完了したか否かを判定する中子入完了工程と、
前記中子入完了工程で前記中子入工程が完了したときに前記移動速度を前記第１速度よりも速い第２速度で移動する第２型閉工程と、
前記中子入完了工程で前記中子入工程が完了していないときに前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する金型干渉位置確認工程と、
を有し、
前記金型干渉位置確認工程で前記可動金型が到達したとき型閉工程を停止することを特徴とする型締装置の金型開閉制御方法を提供することにある。
上記第２の手段によれば、型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、金型との干渉を確実に回避することができ安全な型閉工程が行える。また型締装置の開閉動作（成形サイクル）の短縮化が実現できる。 As a second means for solving the above problems, the present invention provides a mold opening/closing control method for a mold clamping device that includes a core in the mold and performs a core insertion process and a mold closing process in parallel.
a first mold closing step of moving the movable mold at a first speed during the mold closing step from the start of the mold closing operation of the mold to the completion of the core insertion step;
a core insertion completion step of determining whether the core insertion step is completed;
a second mold closing step of moving the moving speed at a second speed faster than the first speed when the core insertion step is completed in the core insertion completion step;
A mold interference position for determining whether or not the movable mold has reached a mold interference position where the mold and the core interfere when the core insertion process is not completed in the core insertion completion process. confirmation process,
has
An object of the present invention is to provide a mold opening/closing control method for a mold clamping device, characterized in that a mold closing step is stopped when the movable mold reaches the mold interference position confirmation step.
According to the second means, interference with the mold can be reliably avoided by starting from the mold interference position where the mold and the core interfere in the core insertion process during the mold closing process. A safe mold closing process can be performed. Furthermore, the opening/closing operation (molding cycle) of the mold clamping device can be shortened.

本発明は、上記課題を解決するための第３の手段として、金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１クロスヘッド速度で移動する第１型閉工程と、
前記中子入工程が完了したか否かを判定する中子入完了工程と、
前記中子入完了工程で前記中子入工程が完了したときに前記移動速度を前記第１クロスヘッド速度よりも速い第２クロスヘッド速度で移動する第２型閉工程と、
前記中子入完了工程で前記中子入工程が完了していないときに前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する金型干渉位置確認工程と、
を有し、
前記金型干渉位置確認工程で前記可動金型が到達したとき型閉工程を停止することを特徴とする型締装置の金型開閉制御方法を提供することにある。
上記第３の手段によれば、型締装置のトグルリンクの送り速度を基準に可動金型が移動する場合であっても、型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、金型との干渉を確実に回避することができ安全な型閉工程が行える。また型締装置の開閉動作（成形サイクル）の短縮化が実現できる。 As a third means for solving the above problems, the present invention provides a mold opening/closing control method for a mold clamping device that includes a core in the mold and performs a core insertion process and a mold closing process in parallel.
a first mold closing step in which the moving speed of the movable mold during the mold closing step from the start of the mold closing operation of the mold to the completion of the core insertion step is moved at a first crosshead speed;
a core insertion completion step of determining whether the core insertion step is completed;
a second mold closing step of moving the moving speed at a second crosshead speed faster than the first crosshead speed when the core insertion step is completed in the core insertion completion step;
A mold interference position for determining whether or not the movable mold has reached a mold interference position where the mold and the core interfere when the core insertion process is not completed in the core insertion completion process. confirmation process,
has
An object of the present invention is to provide a mold opening/closing control method for a mold clamping device, characterized in that a mold closing step is stopped when the movable mold reaches the mold interference position confirmation step.
According to the third means, even if the movable mold moves based on the feed speed of the toggle link of the mold clamping device, the mold and the core interfere in the core insertion process during the mold closing process. By using the mold interference position as the starting point, interference with the mold can be reliably avoided and a safe mold closing process can be performed. Furthermore, the opening/closing operation (molding cycle) of the mold clamping device can be shortened.

本発明は、上記課題を解決するための第４の手段として、第１ないし第３のいずれか１の手段において、前記第１速度又は前記第１クロスヘッド速度は、前記可動金型が前記金型干渉位置に到達する前に前記中子入工程が完了する移動速度に設定することを特徴とする型締装置の金型開閉制御方法を提供することにある。
上記第４の手段によれば、可動金型の移動速度を型締装置毎に最速かつ効率的に設定できる。 As a fourth means for solving the above problem, the present invention provides that in any one of the first to third means, the first speed or the first crosshead speed is such that the movable mold is It is an object of the present invention to provide a mold opening/closing control method for a mold clamping device, characterized in that the moving speed is set to such a speed that the core insertion process is completed before reaching the mold interference position.
According to the fourth means, the moving speed of the movable mold can be set for each mold clamping device in the fastest and most efficient manner.

本発明は、上記課題を解決するための第５の手段として、金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御装置において、
前記中子が前記金型に挿入されたことを検出する中子入限センサと、
前記型閉工程の可動金型の移動位置を検出する型閉位置センサと、
前記型閉位置センサ及び前記中子入限センサの測定値に基づいて前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度とし、前記中子入工程が完了した後の前記移動速度を第２速度とし、前記第２速度の最高速度は前記第１速度の最高速度よりも速く設定し、前記中子入工程が完了していないとき前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する制御部を備えたことを特徴とする型締装置の金型開閉制御装置を提供することにある。
上記第５の手段によれば、型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、金型との干渉を確実に回避することができ安全な型閉工程が行える。 As a fifth means for solving the above problems, the present invention provides a mold opening/closing control device for a mold clamping device that includes a core in the mold and performs a core insertion process and a mold closing process in parallel.
a core entry limit sensor that detects that the core is inserted into the mold;
a mold closing position sensor that detects the moving position of the movable mold in the mold closing process;
The moving speed of the movable mold during the mold closing process from the start of the mold closing operation to the completion of the core insertion process is determined based on the measured values of the mold closing position sensor and the core insertion limit sensor. 1 speed, and the moving speed after the core insertion process is completed is a second speed, and the maximum speed of the second speed is set faster than the maximum speed of the first speed, and the core insertion process is Mold opening/closing control of a mold clamping device, characterized in that the mold opening/closing control of a mold clamping device is provided, comprising a control unit that determines whether or not the movable mold has reached a mold interference position where the mold and the core interfere when the movable mold is not completed. The goal is to provide equipment.
According to the fifth means, interference with the mold can be reliably avoided by starting from the mold interference position where the mold and the core interfere in the core insertion process during the mold closing process. A safe mold closing process can be performed.

本発明によれば、型締装置の開閉動作（成形サイクル）の短縮化が実現できる。また型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、何らかの理由で中子入限までの時間が遅くなったとしても、金型との干渉を確実に回避することができ安全な型閉工程が行える。 According to the present invention, it is possible to shorten the opening/closing operation (molding cycle) of the mold clamping device. In addition, by starting from the mold interference position where the mold and core interfere in the core insertion process during the mold closing process, even if the time until the core insertion limit is delayed for some reason, the mold It is possible to reliably avoid interference between the molds and to perform a safe mold-closing process.

本発明の型締装置の金型開閉制御装置の構成概略図である。FIG. 1 is a schematic configuration diagram of a mold opening/closing control device of a mold clamping device of the present invention. 金型干渉位置の説明図である。It is an explanatory view of a mold interference position. 型閉工程の動作停止の説明図である。It is an explanatory view of operation stop of a mold closing process. 第１速度と第２速度の説明図である。It is an explanatory diagram of a first speed and a second speed. 本発明の型締装置の金型開閉制御方法のフロー図である。It is a flowchart of the mold opening/closing control method of the mold clamping device of this invention. 中子を備えた金型の型閉工程の説明図である。It is an explanatory view of a mold closing process of a metal mold provided with a core.

本発明の型締装置の金型開閉制御方法及び制御装置の実施形態について、図面を参照しながら、以下詳細に説明する。 Embodiments of the mold opening/closing control method and control device of the mold clamping device of the present invention will be described in detail below with reference to the drawings.

［型締装置の金型開閉制御装置１０］
図１は、本発明の型締装置の金型開閉制御装置の構成概略図である。同図に示す型締装置１は、リンクハウジング２と可動盤３の間にトグルリンク４を備えている。可動盤３は可動金型５を備え、対向する固定盤６の固定金型７に向けて進退移動可能に構成している。
本発明の型締装置の金型開閉制御装置１０は、金型を構成する可動金型５に中子１２を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御装置１０において、中子１２が金型に挿入されたことを検出する中子入限センサ２０と、型閉工程の可動金型５の移動位置を検出する型閉位置センサ３０と、
型閉位置センサ３０及び中子入限センサ２０の測定値に基づいて金型の型閉動作開始から中子入工程が完了するまでの型閉工程中の可動金型５の移動速度を第１速度とし、中子入工程が完了した後の移動速度を第２速度とし、第２速度の最高速度は第１速度の最高速度よりも速く設定し、中子入工程が完了していないとき金型と中子が干渉する金型干渉位置に前記可動金型５が到達したか否か判定する制御部４０を備えている。
中子入限センサ２０は、可動金型５の中子１２の移動装置１３に取り付けて、中子１２が金型に挿入されたことを検出するセンサである。なお、中子入限センサ２０は挿入された中子１２が金型から抜かれたことを検出することもできる。
型閉位置センサ３０は、型閉工程中（型閉動作開始位置から型閉じ動作終了位置まで）の可動金型５の位置を検出するセンサであり、例えば光学式、磁気式などのエンコーダを用いることができる。 [Mold opening/closing control device 10 of mold clamping device]
FIG. 1 is a schematic diagram of a mold opening/closing control device of a mold clamping device of the present invention. A mold clamping device 1 shown in the figure includes a toggle link 4 between a link housing 2 and a movable platen 3. The movable platen 3 includes a movable mold 5 and is configured to be able to move forward and backward toward the fixed mold 7 of the opposing fixed platen 6.
A mold opening/closing control device 10 for a mold clamping device according to the present invention is a mold opening/closing device for a mold clamping device that includes a core 12 in a movable mold 5 constituting a mold and performs a core insertion process and a mold closing process in parallel. In the control device 10, a core entry limit sensor 20 detects that the core 12 is inserted into the mold, a mold closing position sensor 30 detects the movement position of the movable mold 5 in the mold closing process,
Based on the measured values of the mold closing position sensor 30 and the core insertion limit sensor 20, the moving speed of the movable mold 5 during the mold closing process from the start of the mold closing operation to the completion of the core insertion process is first set. The moving speed after the core insertion process is completed is the second speed, and the maximum speed of the second speed is set higher than the maximum speed of the first speed. A control section 40 is provided for determining whether or not the movable mold 5 has reached a mold interference position where the mold and the core interfere.
The core entry limit sensor 20 is a sensor that is attached to the moving device 13 for the core 12 of the movable mold 5 and detects that the core 12 is inserted into the mold. Note that the core insertion limit sensor 20 can also detect that the inserted core 12 is pulled out of the mold.
The mold closing position sensor 30 is a sensor that detects the position of the movable mold 5 during the mold closing process (from the mold closing operation start position to the mold closing operation end position), and uses, for example, an optical or magnetic encoder. be able to.

制御部４０は、中子入限センサ２０と型閉位置センサ３０と電気的に接続し、中子入限（中子１２が金型内に配置された状態）の検出信号と、型閉工程中における可動金型５の移動位置の検出信号に基づいて可動盤３の進退、停止、移動速度を制御している。この制御部４０は、型閉工程中の可動金型５の移動速度を段階的（本実施形態では二段階）に変更制御している。図２は金型干渉位置の説明図である。型閉工程は、可動金型５が型開状態の型閉動作開始位置にあるとき、中子１２は可動金型５の内部から抜かれた位置に配置されている。型閉工程中において可動金型５が固定金型７に向けて移動し、並行して中子１２を金型内に配置する中子入工程も行われる。このとき移動中の可動金型５において中子入中の中子１２が固定金型７と接触する（接触し始める）位置を本実施形態では金型干渉位置とする。制御部４０は、型閉動作開始位置から中子入工程が完了するまでの可動金型５の移動速度を第１速度に設定している。この第１速度は、可動金型５が金型干渉位置に到達する前に中子入工程が完了する移動速度に設定している。これにより可動金型５の移動速度を型締装置毎に最速かつ効率的に設定できる。
また制御部４０は中子入工程が完了した後から型閉動作終了位置までの可動金型５の移動速度を第２速度に設定している。この第２速度は、中子１２と金型が干渉することがないため型締装置１の最大速度に設定している。
第１速度から第２速度への切り替えは、型閉工程中に中子入工程が完了したときに行う。 The control unit 40 is electrically connected to the core entry limit sensor 20 and the mold closing position sensor 30, and outputs a detection signal of the core entry limit (the state in which the core 12 is placed in the mold) and a mold closing process. The forward and backward movements, stopping, and moving speed of the movable platen 3 are controlled based on the detection signal of the moving position of the movable mold 5 therein. This control unit 40 changes and controls the moving speed of the movable mold 5 in stages (in this embodiment, two stages) during the mold closing process. FIG. 2 is an explanatory diagram of the mold interference position. In the mold closing process, when the movable mold 5 is in the mold-opening state and at the mold-closing operation start position, the core 12 is placed in a position where it is pulled out from inside the movable mold 5. During the mold closing process, the movable mold 5 moves toward the fixed mold 7, and in parallel, a core insertion process in which the core 12 is placed in the mold is also performed. At this time, in the moving movable mold 5, the position where the core 12 that is being inserted into the core contacts (starts to come into contact with) the fixed mold 7 is defined as a mold interference position in this embodiment. The control unit 40 sets the moving speed of the movable mold 5 from the mold closing operation start position to the completion of the core insertion process to a first speed. This first speed is set to a moving speed at which the core insertion process is completed before the movable mold 5 reaches the mold interference position. Thereby, the moving speed of the movable mold 5 can be set for each mold clamping device in the fastest and most efficient manner.
Further, the control unit 40 sets the moving speed of the movable mold 5 from the completion of the core insertion process to the end position of the mold closing operation to a second speed. This second speed is set to the maximum speed of the mold clamping device 1 to prevent interference between the core 12 and the mold.
Switching from the first speed to the second speed is performed when the core insertion process is completed during the mold closing process.

図３は型閉工程の動作停止の説明図である。制御部４０は型閉工程中で中子入工程が完了していない場合、型閉位置センサ３０の測定値に基づいて金型干渉位置に可動金型５が到達しているか否かを判断している。中子入工程中の中子１２が金型内部に配置される前に可動金型５が金型干渉位置に到達すると中子１２と金型が干渉してしまう。この場合、制御部４０は型閉動作を停止して、干渉を回避する。本発明では金型干渉位置を起点（ファクター）として、型閉位置センサ３０の測定値に基づいて、この位置まで中子入限になっていない場合は、可動金型５を停止させている。実際、停止信号を受けて金型が停止するまでにはタイムラグがあり、金型干渉位置で金型が安全に停止できるだけの余裕を見る必要がある。これにより、中子と金型の干渉を確実に回避でき、安全な型閉動作が行える。 FIG. 3 is an explanatory diagram of the operation stop of the mold closing process. If the core insertion process is not completed during the mold closing process, the control unit 40 determines whether the movable mold 5 has reached the mold interference position based on the measured value of the mold closing position sensor 30. ing. If the movable mold 5 reaches the mold interference position before the core 12 is placed inside the mold during the core insertion process, the core 12 and the mold will interfere. In this case, the control unit 40 stops the mold closing operation to avoid interference. In the present invention, the movable mold 5 is stopped based on the measurement value of the mold closing position sensor 30 using the mold interference position as a starting point (factor) if the core insertion limit has not been reached up to this position. In fact, there is a time lag until the mold stops after receiving the stop signal, so it is necessary to allow enough margin for the mold to stop safely at the mold interference position. Thereby, interference between the core and the mold can be reliably avoided and a safe mold closing operation can be performed.

図４は第１速度と第２速度の説明図であり、（１）は定速、（２）はクロスヘッド速度を示している。
制御部４０による第１及び第２速度の制御は、（１）定速と（２）のクロスヘッド速度があり、いずれも第２速度の最高速度は第１速度の最高速度よりも速く設定している。
（１）の定速は、型閉動作開始位置から第１速度（第１型閉速度）に達すると中子入工程が完了する（中子入工程完了位置）まで一定の速度で移動する。中子入工程が完了した後からさらに加速して第１速度よりも速い第２速度（第２型閉速度）に達すると一定の速度で移動する。型閉動作終了位置の直前に金型の衝突破損を防止する金型保護減速区間を設けている。金型保護減速区間では可動金型５を第２速度から減速し低速で移動して型閉動作終了位置に到達させる。
（２）のクロスヘッド速度の場合は、型締装置のトグルリンク４の送り速度を基準に可動金型５が移動する。このときの移動速度はトグルリンク特性の影響により、定速ではなく、上に凸の放物線状に移動する。換言すると型閉動作開始位置から中子入工程が完了する（中子入工程完了位置）までの間は徐々に加速し倍力構造によって出力が増大して第１クロスヘッド速度（第１速度）の最高速度に達した後、緩やかに減速して中子入工程完了位置に到達する。そして中子入工程完了位置から再度倍力構造によって出力が増大して第１速度の最高速度よりも速い第２クロスヘッド速度（第２速度）の最高速度に達した後、穏やかに減速して金型保護減速区間を経て低速で型閉動作終了位置に到達させる。 FIG. 4 is an explanatory diagram of the first speed and the second speed, where (1) shows the constant speed and (2) shows the crosshead speed.
The control of the first and second speeds by the control unit 40 includes (1) constant speed and (2) crosshead speed, and in both cases, the maximum speed of the second speed is set higher than the maximum speed of the first speed. ing.
The constant speed (1) moves at a constant speed from the mold closing operation start position until the core insertion process is completed (core insertion process completion position) when the first speed (first mold closing speed) is reached. After the core inserting step is completed, it is further accelerated and reaches a second speed (second mold closing speed) faster than the first speed, and then moves at a constant speed. Immediately before the end of the mold closing operation, a mold protection deceleration section is provided to prevent collision damage to the mold. In the mold protection deceleration section, the movable mold 5 is decelerated from the second speed and moved at a low speed to reach the mold closing operation end position.
In the case of the crosshead speed (2), the movable mold 5 moves based on the feed speed of the toggle link 4 of the mold clamping device. The moving speed at this time is not constant speed but moves in an upwardly convex parabolic shape due to the toggle link characteristics. In other words, from the mold closing operation start position to the completion of the core insertion process (core insertion process completion position), the speed is gradually accelerated and the output is increased by the booster structure to reach the first crosshead speed (first speed). After reaching the maximum speed of , it is gradually decelerated and reaches the core insertion process completion position. Then, from the core insertion process completion position, the output is increased again by the booster structure and reaches the maximum speed of the second crosshead speed (second speed), which is faster than the maximum speed of the first speed, and then gently decelerates. After passing through the mold protection deceleration section, the mold closing operation end position is reached at low speed.

［型締装置の金型開閉制御方法］
上記構成による本発明の型締装置の金型開閉制御方法について、以下説明する。図５は本発明の型締装置の金型開閉制御方法のフロー図である。
型閉工程はまず型開状態の可動金型５を第１速度で移動させる（第１型閉工程）。これと平行して可動金型５の中子１２を金型内部に配置する中子入工程を行う（ステップ１）。
中子１２が金型内部に配置されたか否かを判定する（中子入工程完了：ステップ２）。中子入限センサ２０により中子入が完了した測定信号を制御部４０が受信すると、制御部４０は可動金型５の移動速度を第１速度よりも速い第２速度に設定する（ステップ３）。可動金型５が型閉動作終了位置まで移動して型閉工程が終了する。
ステップ２で中子１２が金型内部に配置されていない場合、可動金型５が金型干渉位置に到達したか否かの判定を行う（金型干渉位置確認工程：ステップ４）。可動金型５が金型干渉位置に到達したときは型閉動作を停止する（ステップ５）。型閉工程中の中子入工程において金型と中子が干渉する金型干渉位置を起点とすることにより、何らかの理由で中子入限までの時間が遅くなったとしても、金型との干渉を確実に回避することができ安全な型閉工程が行える。その後異常停止となる。
可動金型５が金型干渉位置に到達していない場合は、ステップ１の工程に戻る。なお、可動金型５の移動速度は定速又はクロスヘッド速度のいずれであっても良い。 [Mold opening/closing control method of mold clamping device]
The mold opening/closing control method of the mold clamping device of the present invention having the above configuration will be described below. FIG. 5 is a flowchart of a mold opening/closing control method for a mold clamping device according to the present invention.
In the mold closing process, first, the movable mold 5 in the mold open state is moved at a first speed (first mold closing process). In parallel with this, a core inserting process is performed in which the core 12 of the movable mold 5 is placed inside the mold (step 1).
It is determined whether the core 12 has been placed inside the mold (core insertion process completed: step 2). When the control unit 40 receives a measurement signal from the core insertion limit sensor 20 indicating that the core insertion has been completed, the control unit 40 sets the moving speed of the movable mold 5 to a second speed faster than the first speed (step 3 ). The movable mold 5 moves to the end position of the mold closing operation, and the mold closing process ends.
If the core 12 is not placed inside the mold in step 2, it is determined whether the movable mold 5 has reached the mold interference position (mold interference position confirmation step: step 4). When the movable mold 5 reaches the mold interference position, the mold closing operation is stopped (step 5). By starting from the mold interference position where the mold and core interfere in the core insertion process during the mold closing process, even if the time until the core insertion limit is delayed for some reason, the relationship between the mold and the core can be maintained. Interference can be reliably avoided and a safe mold closing process can be performed. After that, it will stop abnormally.
If the movable mold 5 has not reached the mold interference position, the process returns to step 1. Note that the moving speed of the movable mold 5 may be either constant speed or crosshead speed.

このような本発明によれば、型締装置の開閉動作（成形サイクル）の短縮化が実現できる。また型閉工程中の中子入工程において金型との干渉を確実に回避することができ安全な型閉工程が行える。
以上、本発明の好ましい実施形態について説明した。しかしながら、本発明は、上記実施形態に何ら制限されることなく、本発明の主旨を逸脱しない範囲において、種々の変更が可能である。
また、本発明は、実施形態において示された組み合わせに限定されることなく、種々の組み合わせによって実施可能である。 According to the present invention, the opening/closing operation (molding cycle) of the mold clamping device can be shortened. In addition, interference with the mold can be reliably avoided during the core insertion process during the mold closing process, and a safe mold closing process can be performed.
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
Further, the present invention is not limited to the combinations shown in the embodiments, but can be implemented by various combinations.

１ 型締装置
２ リンクハウジング
３ 可動盤
４ トグルリンク
５ 可動金型
６ 固定盤
７ 固定金型
１０ 型締装置の金型開閉制御装置
１２ 中子
１３ 移動装置
２０ 中子入限センサ
３０ 型閉位置センサ
４０ 制御部
1 Mold clamping device 2 Link housing 3 Movable platen 4 Toggle link 5 Movable mold 6 Fixed platen 7 Fixed mold 10 Mold opening/closing control device of mold clamping device 12 Core 13 Moving device 20 Core entry limit sensor 30 Mold closing position Sensor 40 control section

Claims (5)

金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度とし、前記中子入工程が完了した後の前記移動速度を第２速度とし、前記第２速度の最高速度は前記第１速度の最高速度よりも速く設定し、前記中子入工程が完了していないとき前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定することを特徴とする型締装置の金型開閉制御方法。 In a mold opening/closing control method for a mold clamping device that includes a core in a mold and performs a core insertion process and a mold closing process in parallel,
The moving speed of the movable mold during the mold closing process from the start of the mold closing operation of the mold to the completion of the core inserting process is defined as a first speed, and the moving speed after the core inserting process is completed is the first speed. A second speed is set, and the maximum speed of the second speed is set higher than the maximum speed of the first speed, and mold interference occurs when the mold and the core interfere when the core insertion process is not completed. A mold opening/closing control method for a mold clamping device, comprising determining whether the movable mold has reached a position. 金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度で移動する第１型閉工程と、
前記中子入工程が完了したか否かを判定する中子入完了工程と、
前記中子入完了工程で前記中子入工程が完了したときに前記移動速度を前記第１速度よりも速い第２速度で移動する第２型閉工程と、
前記中子入完了工程で前記中子入工程が完了していないときに前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する金型干渉位置確認工程と、
を有し、
前記金型干渉位置確認工程で前記可動金型が到達したとき型閉工程を停止することを特徴とする型締装置の金型開閉制御方法。 In a mold opening/closing control method for a mold clamping device that includes a core in a mold and performs a core insertion process and a mold closing process in parallel,
a first mold closing step of moving the movable mold at a first speed during the mold closing step from the start of the mold closing operation of the mold to the completion of the core insertion step;
a core insertion completion step of determining whether the core insertion step is completed;
a second mold closing step of moving the moving speed at a second speed faster than the first speed when the core insertion step is completed in the core insertion completion step;
A mold interference position for determining whether or not the movable mold has reached a mold interference position where the mold and the core interfere when the core insertion process is not completed in the core insertion completion process. confirmation process,
has
A mold opening/closing control method for a mold clamping device, characterized in that a mold closing process is stopped when the movable mold reaches the mold interference position confirmation process. 金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御方法において、
前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１クロスヘッド速度で移動する第１型閉工程と、
前記中子入工程が完了したか否かを判定する中子入完了工程と、
前記中子入完了工程で前記中子入工程が完了したときに前記移動速度を前記第１クロスヘッド速度よりも速い第２クロスヘッド速度で移動する第２型閉工程と、
前記中子入完了工程で前記中子入工程が完了していないときに前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する金型干渉位置確認工程と、
を有し、
前記金型干渉位置確認工程で前記可動金型が到達したとき型閉工程を停止することを特徴とする型締装置の金型開閉制御方法。 In a mold opening/closing control method for a mold clamping device that includes a core in a mold and performs a core insertion process and a mold closing process in parallel,
a first mold closing step in which the moving speed of the movable mold during the mold closing step from the start of the mold closing operation of the mold to the completion of the core insertion step is moved at a first crosshead speed;
a core insertion completion step of determining whether the core insertion step is completed;
a second mold closing step of moving the moving speed at a second crosshead speed faster than the first crosshead speed when the core insertion step is completed in the core insertion completion step;
A mold interference position for determining whether or not the movable mold has reached a mold interference position where the mold and the core interfere when the core insertion process is not completed in the core insertion completion process. confirmation process,
has
A mold opening/closing control method for a mold clamping device, characterized in that a mold closing process is stopped when the movable mold reaches the mold interference position confirmation process. 請求項１ないし３のいずれか１に記載された型締装置の金型開閉制御方法であって、
前記第１速度又は前記第１クロスヘッド速度は、前記可動金型が前記金型干渉位置に到達する前に前記中子入工程が完了する移動速度に設定することを特徴とする型締装置の金型開閉制御方法。 A mold opening/closing control method for a mold clamping device according to any one of claims 1 to 3, comprising:
The first speed or the first crosshead speed is set to a moving speed at which the core insertion process is completed before the movable mold reaches the mold interference position. Mold opening/closing control method. 金型に中子を備え中子入工程と型閉工程を並行して行う型締装置の金型開閉制御装置において、
前記中子が前記金型に挿入されたことを検出する中子入限センサと、
前記型閉工程の可動金型の移動位置を検出する型閉位置センサと、
前記型閉位置センサ及び前記中子入限センサの測定値に基づいて前記金型の型閉動作開始から前記中子入工程が完了するまでの型閉工程中の可動金型の移動速度を第１速度とし、前記中子入工程が完了した後の前記移動速度を第２速度とし、前記第２速度の最高速度は前記第１速度の最高速度よりも速く設定し、前記中子入工程が完了していないとき前記金型と前記中子が干渉する金型干渉位置に前記可動金型が到達したか否か判定する制御部
を備えたことを特徴とする型締装置の金型開閉制御装置。 In a mold opening/closing control device for a mold clamping device that includes a core in a mold and performs a core insertion process and a mold closing process in parallel,
a core entry limit sensor that detects that the core is inserted into the mold;
a mold closing position sensor that detects the moving position of the movable mold in the mold closing process;
The moving speed of the movable mold during the mold closing process from the start of the mold closing operation to the completion of the core insertion process is determined based on the measured values of the mold closing position sensor and the core insertion limit sensor. 1 speed, and the moving speed after the core insertion process is completed is a second speed, and the maximum speed of the second speed is set faster than the maximum speed of the first speed, and the core insertion process is Mold opening/closing control of a mold clamping device, comprising: a control unit that determines whether the movable mold has reached a mold interference position where the mold and the core interfere when the movable mold is not completed. Device.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006289410A (en) 2005-04-08 2006-10-26 Toshiba Mach Co Ltd Electric-motor type die clamping method in die casting machine mounting die having core
JP2018167579A (en) 2017-03-29 2018-11-01 住友重機械工業株式会社 Injection molding machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006289410A (en) 2005-04-08 2006-10-26 Toshiba Mach Co Ltd Electric-motor type die clamping method in die casting machine mounting die having core
JP2018167579A (en) 2017-03-29 2018-11-01 住友重機械工業株式会社 Injection molding machine

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