Patent ID: 7975852

Claim:
A centrifugal device for supplying thermoplastic preforms, which are horizontally-laid and aligned, from preforms received in bulk, said device comprising: a substantially horizontal transport ring rotating about an axis, a central rotary disc rotating in the same direction as the transport ring and having an axis inclined relative to that of the transport ring, the rotary disc and the transport ring being at a distance from one another in one zone for loading the preforms in bulk onto the rotary disc and being substantially tangent in another zone for transferring the preforms from the rotary disc onto the transport ring located at a higher level than that of the loading zone, a lateral guide peripherally surrounding the transport ring for retaining the preforms transferred onto the transport ring, an outlet channel open into the lateral guide and extending substantially tangentially to the transport ring for the removal of the preforms which are horizontally-laid and aligned in succession, an ejection mechanism mounted on the lateral guide downstream, when observed in the direction of rotation of the transport ring, of said transfer zone and upstream of the opening of said outlet channel and adapted for occupying a resting position in which the ejection mechanism does not affect the displacement of the preforms driven by the transport ring and an operational position in which the preforms are forced to leave the transport ring, actuating means, operationally associated with said ejection mechanism, for actuating the ejection mechanism, to cause a selective displacement of the ejection mechanism between said resting and operational positions, and detection means located upstream of said ejection mechanism and adapted for detecting an undesirable preform present on the transport ring, said detection means being operatively connected to the means for actuating the ejection mechanism to force the ejection mechanism into the operational position for the ejection of the undesirable preform, when an undesirable preform is detected, wherein the ejection mechanism comprises a mobile trap adapted for closing an opening made in the lateral guide, the actuating means is adapted for displacing said mobile trap by controlling the detection means and opening said opening of the lateral guide so that the detected undesirable preform is ejected through the opening as a result of the centrifugal force, and the mobile trap is displaceable and pivotable towards the outside of the lateral guide.