METHOD FOR EJECTING A VESSEL CARRIED BY A MANDREL BY ABUTMENT OF AN EJECTION FACE AGAINST A BEARING FACE OF THE NECK ARRANGED UNDER THE MOUTH OF THE VESSEL

摘要

A method for ejecting a vessel (12), carried by a transporting device (10), the vessel (12) being provided with a neck (16) including a mouth (18), the transporting device (10) including: a mobile support (28); a gripping mandrel (30) that grips by vertical engagement with the neck (16); an ejection face (64) mounted on the mobile support (28), the gripping mandrel (30) being mounted vertically slidable relative to the ejection face (64) to allow the gripping mandrel (30) to be extracted from the neck (16) when it slides via contact between the ejection face (64) and a bearing face (24) of the neck (16); characterized in that the bearing face (24) of the neck (16) is formed by a shoulder face that protrudes radially towards the outside relative to the mouth (18) and is arranged under the mouth (18) in the vertical direction.

主权项

1. Method for ejecting a vessel (12), in particular a preform (12) made of thermoplastic material, carried by a transport device (10), in which the vessel (12) is provided with a cylindrical neck (16) with a vertical axis (A) that comprises a free upper end edge called a mouth (18), with the transport device (10) comprising:
at least one movable support (28) along a path; at least one mandrel (30) for gripping the vessel (12) by vertical engagement with the neck (16); a lower ejection face (64) that is mounted on the movable support (28), with the gripping mandrel (30) being mounted to slide vertically relative to the ejection face (64) for making it possible to extract the gripping mandrel (30) from the neck (16) during relative sliding of it by bringing the ejection face (64) into contact with an upper bearing face (24) vertically opposite the neck (16), with the gripping mandrel (30) sliding relative to the ejection face (64) between a lower transport position in which the engagement of the gripping mandrel (30) with the neck (16) is made possible, and an upper ejection position of the vessel (12) in which the ejection face (64) prevents the gripping mandrel (30) from engaging with the neck (16) by abutment against the bearing face (24) of the neck (16); wherein the bearing face (24) of the neck (16) is formed by a shoulder face that projects radially outward relative to the mouth (18) and that is arranged below the mouth (18) in the vertical direction.