For the inspection of “flat” caps. Typical installation is at the exit of a molding machine, after pieces have been orientated upward facing by a dedicated feeder or after an inserting (lining) machine. The vision system in its “full” configuration is normally installed on a transportation machine composed by a star-wheel and a vacuum conveyor belt, but other solutions are possible, depending on the desired inspections.
Inspection of the border and the inner surface of the closures. The inspection is performed with the closures upward facing, with a top-view. The optic is a wide-angle lens, in order to enhance the typical defects on the border of the closure (short-shot, deformation, ovality, horizontal flashes) and inside, on the visible surfaces (contaminations, color variations, black spots). This module can be installed either on a conveyor belt (with caps moving aligned, spaced and upward facing) or on a star-wheel.
This module has to be installed on a conveyor belt, with closures moving aligned and spaced. It uses a special lens, which allows to observe the side surface with a top-view. If the closures are oriented with the opening downward facing, this unit allows the simultaneous control of the side and top external surfaces. Typical defects that can be detected are color variations, dirty, black spots.
Inspection of the top external surface. Normally this inspection is performed with closures moving on a star-wheel, upward facing, while camera observes the top surface from the bottom, through a hole in the main plate of the machine (usually on the hole is installed a special glass). Typical defects that can be detected with this unit are: dirty, contaminations, color variations, black spots. This module, if required, could also inspect a possible printed logo.
Inspection of the external side surface of the closure. The acquisition unit uses four cameras, installed at 90° each other. The unit is installed on a conveyor belt, with closures moving aligned and spaced, upward facing. Typical defects that can be detected with this unit are: lack of material on the border, vertical flashes, dirty, black spots.
Inspection of the liner assembled inside the closure. The inspection is performed with the closures upward facing, with a top-view. For liner inspection the typical defects are: missing material, liner not properly inserted, missing liner, upside-down liner (only for metal foil liners), contamination/dirty.
For the inspection of Sport caps. Typical installation is at the exit of the machine that performs the assembling of the components. The vision system with “full” configuration is normally installed on a transportation machine composed by a star-wheel and a vacuum conveyor belt, but other solutions are possible, depending on the desired inspections.
Available standard modules are (considering a typical sport cap closure, the “push-pull” type, consisting of three components: cap, pourer and transparent cover).
Inspection of the border and the inner surface of the cap. The inspection is normally performed with the closures moving on a star-wheel, downward facing, with a bottom-view, through a hole in the main plate of the machine (usually on the hole is installed a special glass). The optic is a wide-angle lens, in order to enhance the typical defects on the border of the closure (short-shot, deformation, ovality, horizontal flashes) and inside, on the visible surfaces (contaminations, color variations, black spots).
This module has to be installed on a conveyor belt, with closures moving aligned and spaced. It uses a special lens, which allows to observe the side surface with a top-view. On push-pull caps it is used to detect defects on the T/E of the cover (short-shots or broken T/E).
Inspection of the external side surface of the closure. The acquisition unit uses four cameras, installed at 90° each other. The unit is installed on a conveyor belt, with closures moving aligned and spaced, normally downward facing. Typical defects that can be detected with this unit are: contaminations (on the cap or the pourer (through the cover)), color changes (on the cap), protruding injection point (on the cover), cover not properly assembled.
