Patent ID: 8851881
Filing Date: 2014-10-07
Classification: B29C,B65G

Abstract:
1. A system for blowing or stretch-blowing plastic material, comprising an oven for heating and curing the heat profile of preforms, a blowing or stretch-blowing machine, comprising a plurality of mould units and a plurality of drive units of the preforms entering and exiting said oven, wherein said oven comprises units of transport devices and heating sources for the preforms, wherein said transport devices comprise a track on which a plurality of mandrels individually slide, each adapted for engaging a preform, and wherein said drive units for the preforms coming out of the oven comprise a plurality of gripping members for the preforms distanced at a fixed pitch substantially equivalent to the pitch of the moulds, wherein said oven comprises drive and distancing units of the heated preforms from a minimum pitch to a pitch substantially corresponding to the pitch of the gripping members of the drive units for the preforms coming out of the oven, and wherein said drive and distancing units distance said mandrels from a contact condition to a distanced condition wherein the mandrels are not in contact with one another and wherein the mandrels are separated by a pitch substantially corresponding to the pitch of the gripping members of the drive units.