JPWO2018117250A1 - 油圧式射出成形機の制御方法及び駆動制御装置 - Google Patents
油圧式射出成形機の制御方法及び駆動制御装置 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C33/24—Opening, closing or clamping by rectilinear movement using hydraulic or pneumatic means
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
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- B29C45/80—Measuring, controlling or regulating of relative position of mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims (16)
- 油圧ポンプにより油圧駆動アクチュエータを駆動して可動部を移動させるとともに、可動部の移動中に、減速開始点に達したなら設定した停止位置に停止させる減速制御処理を行い、かつ設定した目標位置に達したなら減速終了処理を行う油圧式射出成形機の制御方法において、前記減速開始点に達したなら前記油圧駆動アクチュエータのメータイン側を流量制御することにより減速制御処理を開始し、前記可動部の移動位置を検出して、当該移動位置に対応した速度指令により前記油圧駆動アクチュエータに対するメータイン制御を行うとともに、前記可動部の移動速度を求め、当該移動速度に対して前記速度指令に一致するように前記油圧駆動アクチュエータに対するメータアウト制御によるフィードバック制御を行うことを特徴とする油圧式射出成形機の制御方法。
- 前記油圧駆動アクチュエータには、型締装置の型開閉シリンダを適用するとともに、前記可動部には、前記型締装置における可動型を支持する可動盤を適用することを特徴とする請求項1記載の油圧式射出成形機の制御方法。
- 前記可動部は、移動に係わる移動抵抗に基づく負荷の大きさが一定の大きさ以下の負荷状態であることを特徴とする請求項1又は2記載の油圧式射出成形機の制御方法。
- 前記停止位置は、正規停止位置又は仮想停止位置を含むことを特徴とする請求項1記載の油圧式射出成形機の制御方法。
- 前記減速開始点は、予め、設定した移動速度により前記可動部を移動させる定速移動区間と、この定速移動区間の終了点から漸次減速させる減速移動区間と、この減速移動区間が終了する目標位置を含む所定の速度制御パターンを設定し、実際の定速移動区間では、前記設定した移動速度により前記可動部を移動させ、かつ検出した移動速度と移動位置に基づき、所定の時間間隔毎に演算により順次予測した仮想停止位置で移動速度がゼロになる前記定速移動区間の終了点を、前記減速開始点として設定することを特徴とする請求項4記載の油圧式射出成形機の制御方法。
- 前記速度指令は、検出した前記可動部の移動位置から前記速度制御パターンに基づいて求めることを特徴とする請求項5記載の油圧式射出成形機の制御方法。
- 前記型開閉シリンダの型閉方向における前油室の油圧及び前記型開閉シリンダの型開方向における後油室の油圧を監視し、型開動作の際に、前記後油室の油圧が前記前油室の油圧よりも大きいときは、前記メータアウト制御によるフィードバック制御の速度指令に、前記後油室の油圧と前記前油室の油圧の差圧に対応する大きさの速度指令を加算する制御を行うことを特徴とする請求項2記載の油圧式射出成形機の制御方法。
- 前記型開閉シリンダの型閉方向における前油室の油圧,前記型開閉シリンダの型開方向における後油室の油圧及び前記油圧ポンプの吐出圧を監視し、型閉動作の際に、前記前油室の油圧が前記後油室の油圧よりも大きく、かつ前記前油室の油圧が前記油圧ポンプの吐出圧よりも大きいときは、前記メータイン制御の圧力制御ループにおける圧力指令を、前記前油室の油圧の大きさに切換える制御を行うことを特徴とする請求項2記載の油圧式射出成形機の制御方法。
- 前記型開閉シリンダの型閉方向における前油室の油圧を監視し、当該油圧が負圧のときは、メータイン制御における流量を増加させるとともに、メータイン制御における開度を絞る制御を行うことを特徴とする請求項2記載の油圧式射出成形機の制御方法。
- 油圧ポンプにより油圧駆動アクチュエータを駆動して可動部を移動させるとともに、可動部の移動中に、減速開始点に達したなら設定した停止位置に停止させる減速制御処理を行い、かつ設定した目標位置に達したなら減速終了処理を行う機能を備える油圧式射出成形機の駆動制御装置において、前記油圧駆動アクチュエータに接続したメータイン回路と、当該油圧駆動アクチュエータに接続したメータアウト回路と、前記減速開始点に達したなら前記油圧駆動アクチュエータに対するメータイン回路を流量制御することにより減速制御処理を開始し、前記可動部の移動位置を検出して、当該移動位置に対応した速度指令により前記メータイン回路に対するメータイン制御を行うとともに、前記可動部の移動速度を求め、当該移動速度が前記速度指令に一致するように前記メータアウト回路に対するメータアウト制御によるフィードバック制御を行う制御部とを具備してなることを特徴とする油圧式射出成形機の駆動制御装置。
- 前記油圧駆動アクチュエータには、型締装置の型開閉シリンダを適用するとともに、前記可動部には、型締装置における可動型を支持する可動盤を適用することを特徴とする請求項10記載の油圧式射出成形機の駆動制御装置。
- 前記型締装置は、前記可動部を、移動に係わる移動抵抗に基づく負荷の大きさが一定の大きさ以下の負荷状態に支持する可動部支持機構を備えることを特徴とする請求項11記載の油圧式射出成形機の駆動制御装置。
- 前記可動部支持機構は、前記可動部を接触状態により直接摺動可能に支持する支持面を備えることを特徴とする請求項12記載の油圧式射出成形機の駆動制御装置。
- 前記可動部支持機構は、前記可動部をスライド変位自在に支持するリニアガイド機構部を備えることを特徴とする請求項12記載の油圧式射出成形機の駆動制御装置。
- 前記メータアウト回路は、メータアウト制御により流量を可変制御可能な流量制御弁を備えることを特徴とする請求項10記載の油圧式射出成形機の駆動制御装置。
- 前記油圧ポンプは、ポンプモータの回転数を可変することにより吐出流量を制御可能な可変吐出型油圧ポンプであることを特徴とする請求項10記載の油圧式射出成形機の駆動制御装置。
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JPH08114203A (ja) * | 1994-10-14 | 1996-05-07 | Kobe Steel Ltd | シリンダの制御方法並びに油圧回路 |
JPH11235741A (ja) * | 1998-02-23 | 1999-08-31 | Mitsubishi Heavy Ind Ltd | 射出成形機の型締装置 |
JP2009202366A (ja) * | 2008-02-26 | 2009-09-10 | Nissei Plastics Ind Co | 型締装置の制御方法 |
JP2009202365A (ja) * | 2008-02-26 | 2009-09-10 | Nissei Plastics Ind Co | 型締装置の制御方法 |
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US3628901A (en) * | 1969-07-15 | 1971-12-21 | New Britain Machine Co | Means for monitoring product quality in a plastics injection-molding machine |
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US10882105B2 (en) | 2021-01-05 |
US20200164430A1 (en) | 2020-05-28 |
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