Synchroniser for controlling movement of glass sheets

摘要

Method for synchronising the movement of the leading edge of a glass sheet entering a roller hearth furnace with a predetermined point on a rotating roller over which the glass sheet will pass, comprises: (a) identifying a reference point associated with the roller; (b) holding the glass sheet at a preselected location adjacent the rotating roller; and (c) releasing the glass sheet from the preselected location when the reference point is in a predetermined spatial relationship w.r.t. the glass sheet leading edge, whereby the glass sheet will engage the rotating roller at the predetermined point on the roller.