JPWO2020174846A1 - 移載装置及び天井搬送車 - Google Patents
移載装置及び天井搬送車 Download PDFInfo
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Abstract
Description
第一制御:物品を第一端部側に移動させるときの最大加速度を、第二端部側に移動させるときの最大加速度よりも小さくする制御
第二制御:物品を第一端部側に移動させるときの最大減速度を、第二端部側に移動させるときの最大減速度よりも大きくする制御
第三制御:物品を第一端部側に移動させるときの最大減速度の絶対値を、最大加速度の絶対値よりも大きくする制御
第四制御:物品を第二端部側に移動させるときの最大加速度の絶対値を、最大減速度の絶対値よりも大きくする制御
(1)重心が偏った方向(以下、「偏心方向」とも称する。)と移動方向が一致する場合
この場合、移動方向に加速すると、重力が第一端部側を下方に傾かせようとする力を、加速による慣性力が増長させようとする。このため、第一端部側が沈み、第二端部側が浮き上がり易い状態(以下、単に「浮き上がり」と称する。)となる(第一状態)。また、移動方向に減速すると、重力が第一端部側を下方に傾かせようとする力を、減速による慣性力が打ち消そうとする。このため、第一状態と比べると浮き上がりは発生し難い状態となる(第二状態)。
この場合、移動方向に減速すると、重力によって第一端部側に傾こうとする力を、減速による慣性力が増長させようとする。このため、浮き上がりが発生し易い状態となる(第三状態)。他方、移動方向に加速すると、重力によって第一端部側に傾こうとする力を、加速による慣性力が打ち消そうとする。このため、第三状態に比べると浮き上がりが発生し難い状態となる(第四状態)。
第一制御は、FOUP10を前端E1側に移動させるときの最大加速度を、後端E2側に移動させるときの最大加速度よりも小さくする制御である。具体的には、コントローラ50は、横送り部24の前端E1側方向への移動開始時における最大加速度a1が、後端E2側方向への移動開始時における最大加速度a2よりも小さくなるように横送り部24を制御する。ここでいう移動開始時とは、初速が0のときから等速度v1で送り出されるまでの間をいう。すなわち、図7(a)に示されるv−tグラフにおけるt10〜t11の間又は図7(b)に示されるt20〜t21の間をいう。
第二制御は、FOUP10を前端E1側に移動させるときの最大減速度を、後端E2側に移動させるときの最大減速度よりも大きくする制御である。具体的には、コントローラ50は、横送り部24の前端E1側方向への移動終了時における最大減速度a3が、後端E2側方向への移動終了時における最大減速度a4よりも大きくなるように横送り部24を制御する。ここでいう移動終了時とは、等速度v1から移動速度が0になるまでの間をいう。すなわち、図7(a)に示されるv−tグラフにおけるt12〜t13の間又は図7(b)に示されるt22〜t23の間をいう。
第三制御は、FOUP10を前端E1側に移動させるときの最大減速度の絶対値を、最大加速度の絶対値よりも大きくする制御である。具体的には、コントローラ50は、FOUP10を前端E1側に移動させるとき、図7(a)に示されるように、横送り部24の前端E1側方向への移動終了時における最大減速度a3の絶対値が、移動開始時における最大加速度a1の絶対値よりも大きくなるように横送り部24を制御する。
第四制御は、FOUP10を後端E2側に移動させるときの最大加速度の絶対値を、最大減速度の絶対値よりも大きくする制御である。具体的には、コントローラ50は、FOUP10を後端E2側に移動させるとき、図7(b)に示されるように、横送り部24の後端E2側方向への移動開始時における最大加速度a2の絶対値が、移動終了時における最大減速度a4の絶対値よりも大きくなるように横送り部24を制御する。
図5(a)及び図7(a)を主に参照しながら、移載装置7がFOUP10を左側の載置部9に載置する動作について説明する。ここで説明する動作は、FOUP10を前端E1側に移動させる動作である。横送り部24は、左方向への移動を開始する(t10〜t11)。このとき、コントローラ50は、徐々に加速度を大きくし、最大加速度a1になったところで暫く継続し、その後は徐々に加速度を小さくするように、横送り部24の横送りを制御する。次に、横送り部24は、一定の速度で暫く移動する(t11〜t12)。コントローラ50は、このときの加速度を0に維持するように制御する。その後、横送り部24は、移動を終了する(t12〜t13)。このとき、コントローラ50は、徐々に減速度を大きくし、最大減速度a3になったところで暫く継続し、その後は徐々に減速度を小さくするように、横送り部24の横送りを制御する。コントローラ50は、最大減速度a3の絶対値が最大加速度a1の絶対値よりも大きくなるように、横送り部24を制御する。すなわち、本実施形態では、移動開始時(t10〜t11)に要する時間は、移動終了時(t12〜t13)に要する時間よりも長くなる。
次に、図5(b)及び図7(b)を主に参照しながら、移載装置7が左側の載置部9からFOUP10を移動させる動作について説明する。ここで説明する動作は、FOUP10を後端E2側に移動させる動作である。横送り部24は、移動を開始する(t20〜t21)。このとき、コントローラ50は、徐々に加速度を大きくし、最大加速度a2になったところで暫く継続し、その後は徐々に加速度を小さくするように、横送り部24の横送りを制御する。次に、横送り部24は、一定の速度で暫く移動する(t21〜t22)。コントローラ50は、このときの加速度を0に維持するように制御する。その後、横送り部24は、移動を終了する(t22〜t23)。このとき、コントローラ50は、徐々に減速度を大きくし、最大減速度a4になったところで暫く継続し、その後は徐々に減速度を小さくするように、横送り部24の横送りを制御する。コントローラ50は、最大加速度a2の絶対値が最大減速度a4の絶対値よりも大きくなるように、横送り部24を制御する。すなわち、本実施形態では、移動開始時(t20〜t21)に要する時間は、移動終了時(t22〜t23)に要する時間よりも短くなる。
図6(a)に示される移載装置7が右側の載置部9にFOUP10を載置するときの動作は、上述した(B)移載装置7が左側の載置部9からFOUP10を移動させる動作と同じであるので、ここでの詳細な説明は省略する。
図6(b)に示される移載装置7が右側の載置部9からFOUPを移動させるときの動作は、上述した(A)移載装置7がFOUP10を左側の載置部9に載置する動作と同じであるので、ここでの詳細な説明は省略する。
Claims (6)
- 一方向に沿って物品を移動させる移載装置であり、重心位置が前記一方向における第一端部と第二端部との中心位置から前記第一端部側にずれている前記物品を下方から支持する前記移載装置であって、
前記物品を前記第一端部側に移動させるときの最大加速度を、前記第二端部側に移動させるときの最大加速度よりも小さくする第一制御、前記物品を前記第一端部側に移動させるときの最大減速度を、前記第二端部側に移動させるときの最大減速度よりも大きくする第二制御、前記物品を前記第一端部側に移動させるときの最大減速度の絶対値を、最大加速度の絶対値よりも大きくする第三制御、及び前記物品を前記第二端部側に移動させるときの最大加速度の絶対値を、最大減速度の絶対値よりも大きくする第四制御の少なくとも一つの制御を実行するコントローラを備える、移載装置。 - 前記コントローラは、前記第一制御及び前記第二制御の両方を実行する、請求項1記載の移載装置。
- 前記コントローラは、前記第三制御及び前記第四制御の両方を実行する、請求項1記載の移載装置。
- 前記コントローラは、前記第一制御、前記第二制御、前記第三制御、及び前記第四制御の全ての制御を実行する、請求項1記載の移載装置。
- 前記物品は、第一端部側に向けて開口している本体部と、前記開口を覆う蓋部と、前記本体部の上部に設けられたフランジ部とを有する容器であり、
前記フランジ部を下方から支持した状態で保持する保持部を更に有する請求項1〜4の何れか一項記載の移載装置と、
天井に支持された軌道を走行する走行部と、を備えている、天井搬送車。 - 前記フランジ部の上面を付勢する付勢部材を更に備える、請求項5記載の天井搬送車。
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PCT/JP2019/050215 WO2020174846A1 (ja) | 2019-02-26 | 2019-12-20 | 移載装置及び天井搬送車 |
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Citations (5)
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JPH08162385A (ja) * | 1994-12-01 | 1996-06-21 | Nikon Corp | ステージ装置とその駆動方法 |
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2019
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- 2019-12-20 JP JP2021501631A patent/JP7120434B2/ja active Active
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JP2000038218A (ja) * | 1998-07-23 | 2000-02-08 | Shinko Electric Co Ltd | 物品の移動装置および移動方法 |
JP2017088396A (ja) * | 2015-11-17 | 2017-05-25 | 株式会社ダイフク | 物品搬送設備 |
JP2018073174A (ja) * | 2016-10-31 | 2018-05-10 | 株式会社ダイフク | 搬送車 |
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EP3932831A1 (en) | 2022-01-05 |
CN113454001B (zh) | 2023-04-04 |
TWI818152B (zh) | 2023-10-11 |
IL285606B1 (en) | 2024-10-01 |
JP7120434B2 (ja) | 2022-08-17 |
US20220157631A1 (en) | 2022-05-19 |
WO2020174846A1 (ja) | 2020-09-03 |
SG11202109010VA (en) | 2021-09-29 |
TW202039338A (zh) | 2020-11-01 |
IL285606A (en) | 2021-09-30 |
EP3932831A4 (en) | 2022-11-16 |
CN113454001A (zh) | 2021-09-28 |
US11735454B2 (en) | 2023-08-22 |
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