JP5631876B2 - シートの搬送速度制御方法、着用物品の製造方法、及び着用物品の製造装置 - Google Patents
シートの搬送速度制御方法、着用物品の製造方法、及び着用物品の製造装置 Download PDFInfo
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- B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
- B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
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Description
Claims (8)
- 駆動ローラの回転駆動により搬送されるシートを回転刃を有する切断部材により所定の長さで切断する際に、この切断位置に対応して前記シートに設けられた複数の指標と前記切断位置とが所定の位置関係となるように前記シートの搬送速度を制御する方法であって、
前記シートの搬送方向における前記切断部材よりも上流側の検出位置において前記指標が検出されたときに前記所定の位置関係が成立するための前記回転刃の回転角として、基準回転角を設定する設定工程と、
前記駆動ローラ及び切断部材を回転駆動させる駆動工程と、
前記検出位置において前記シートの指標を検出する第1検出工程と、
前記第1検出工程において前記指標が検出された時に、前記切断部材の回転刃の回転角を検出する第2検出工程と、
前記第2検出工程において検出された回転角と前記基準回転角との角度の差を特定する特定工程と、
前記特定工程において特定された角度差を小さくする方向に前記駆動ローラの回転速度を制御する速度制御工程とを含み、
前記設定工程では、1の指標の検知から次の指標の検知までの期間として、予定期間を予め設定し、
前記速度制御工程では、前記回転角の差を前記予定期間の間に埋めるための回転速度となるように前記駆動ローラの回転速度を制御することを特徴とするシートの搬送速度の制御方法。 - 前記設定工程では、前記基準回転角として角度範囲を設定し、
前記速度制御工程では、前記第2検出工程において検出された回転角が前記角度範囲に含まれている場合には、前記特定工程において特定された角度差にかかわらず前記駆動ローラの回転速度を一定に維持することを特徴とする請求項1に記載のシートの搬送速度の制御方法。 - 駆動ローラの回転駆動により搬送されるシートを回転刃を有する切断部材により所定の長さで切断することによって、前記シート上に取り付けられた構成物品を有する着用物品を製造するための方法であって、
前記シートの搬送方向における前記切断部材よりも上流側の検出位置において、前記切断部材による切断位置に対応して前記シートに設けられた指標が検出された時の前記回転刃の回転角であり、かつ、前記指標と前記切断位置とが所定の位置関係となるための基準回転角を設定する設定工程と、
駆動ローラ及び切断部材を回転駆動させる駆動工程と、
前記シートの搬送方向における前記駆動ローラと前記切断部材との間で前記シートに前記構成物品を取り付ける取付工程と、
前記検出位置において前記シートの指標を検出する第1検出工程と、
前記第1検出工程において前記指標が検出された時に、前記切断部材の回転刃の回転角を検出する第2検出工程と、
前記第2検出工程において検出された回転角と前記基準回転角との角度の差を特定する特定工程と、
前記特定工程において特定された角度差を小さくする方向に前記駆動ローラの回転速度を制御する速度制御工程とを含み、
前記設定工程では、1の指標の検知から次の指標の検知までの期間として、予定期間を予め設定し、
前記速度制御工程では、前記回転角の差を前記予定期間の間に埋めるための回転速度となるように前記駆動ローラの回転速度を制御することを特徴とする着用物品の製造方法。 - 前記設定工程では、前記基準回転角として角度範囲を設定し、
前記速度制御工程では、前記第2検出工程において検出された回転角が前記角度範囲に含まれている場合には、前記特定工程において特定された角度差にかかわらず前記駆動ローラの回転速度を一定に維持することを特徴とする請求項3に記載の着用物品の製造方法。 - 前記取付工程では、前記構成物品としての吸収性コアを前記シート上に取り付け、
前記取付工程の後に、前記吸収性コアを前記シートとの間で挟むように、前記シート上に第2シートを接合する接合工程をさらに備えていることを特徴とする請求項3又は4に記載の着用物品の製造方法。 - シートと、前記シート上に取り付けられた構成物品とを有する着用物品の製造装置であって、
前記シートを搬送可能な駆動ローラと、
前記駆動ローラを回転駆動させる駆動モータと、
前記シート上に前記構成物品を取付可能な取付部と、
回転駆動に応じて所定間隔で前記シートを切断可能な回転刃を有する切断部材と、
前記駆動ローラと前記切断部材との間に設けられ、前記切断部材による切断位置に対応して前記シートに設けられた指標を検出可能な第1検出部材と、
前記切断部材の回転刃の回転角を検出可能な第2検出部材と、
前記第1検出部材及び第2検出部材の検出結果に基づいて、前記指標と前記切断位置とが所定の位置関係となるように、前記駆動モータの回転速度を制御する制御装置とを備え、
前記制御装置は、
前記第1検出部材により前記指標が検出された時点における前記第2検出部材により検出される前記切断部材の回転刃の回転角であり、かつ、前記指標と前記切断位置とが前記所定の位置関係となるように予め設定された基準回転角を記憶する記憶部と、
前記第2検出部材により検出された前記切断部材の回転刃の回転角と前記基準回転角との差を特定する演算処理部と、
前記回転角の差を小さくする方向に前記駆動モータの速度を変化させるための信号を前記駆動モータに出力する駆動制御部と、を備え、
前記記憶部は、1の指標の検知から次の指標の検知までの期間として予め設定された予定期間を記憶しており、
前記演算処理部は、前記回転角の差を前記予定期間の間に埋めるための駆動モータの回転速度を特定することを特徴とする着用物品の製造装置。 - 前記記憶部は、前記基準回転角として角度範囲を記憶しており、
前記駆動制御部は、前記第2検出部材により検出された回転角が前記角度範囲に含まれている場合には、前記演算処理部により特定された角度差にかかわらず前記駆動モータの駆動速度を一定に維持することを特徴とする請求項6に記載の着用物品の製造装置。 - 使用者の操作を受けることにより前記記憶部に前記基準回転角を入力可能な入力部をさらに備えていることを特徴とする請求項6又は7に記載の着用物品の製造装置。
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