Bottle opening machine

摘要

An improved bottle opening machine for removing crown caps from the head portions of empty bottles in bottle cases without any damage or chipping on the bottle heads as the bottle cases are conveyed on a conveyance system in an end-to-end relation. The improvement consists in that cap removing operation is carried out by way of the steps of engaging cap removing parts to the crown caps on the bottle heads in an area where the circular movement track of the cap removing parts is united with the linear movement track of the bottle heads in the tangential relation, removing the crown caps from the bottle heads under the influence of a moment caused when the former is gradually parted away from the latter and releasing the removed crown caps from the cap removing parts. To ensure that the cap removing parts are correctly engaged with the bottle heads as the rotary disc is rotated, there is provided at least one synchronizing means of which guide recesses are adapted to be simultaneously engaged both the rear end of the preceding bottle case and the fore end of the following case as they are conveyed on the conveyance system. The cap removing parts are caused to rotate by line pressure transmitted from the conveyance system via the bottle case without a specific driving mechanism.