Moulding machine
AssigneeBritish Industrial Plastics Limited
InventorMalcolm Hewitt
Life of this patent
Estimating the term…
Abstract
A compression moulding press has fixed and moving tool portions, a shroud mounted for sliding movement around and in sealing relation to one of said tool portions towards and into sealing engagement with the other tool portion so as to define with said tool portions a substantially closed chamber enclosing a moulding tool associated with said tool portions, together with actuating means operable to slide said shroud into said sealing engagement and means operable to at least partially evacuate said closed chamber when so defined.
Claims13
In a compression moulding press having fixed and moving platen means for receiving and supporting the halves of a moulding tool therebetween, the improvement comprising a shroud member mounted for sliding movement around and in sealing relation to said fixed platen means towards and into sealing engagement with said moving platen means thereby to define with said platen means a substantially closed chamber enclosing said moulding tool, together with actuating means operable to slide said shroud, said fixed platen means having a continuous peripheral piston seal disposed thereon to effect said sealing relation and means operable to at least partially evacuate said closed chamber when so defined.
In compression moulding press having a fixed and a moving platen means for receiving and supporting the halves of a moulding tool therebetween, the improvement comprising a shroud member mounted for sliding movement around and in sealing relation to said fixed platen means towards and into sealing engagement with said moving platen means thereby to define with said platen means a substantially closed chamber enclosing said moulding tool, together with actuating means operable to slide said shroud, said fixed platen means having a continuous peripheral piston seal disposed thereon to effect said sealing relation, means operable to at least partially evacuate said closed chamber when so defined, and induction heating means associated with at least one of said platen means operable to heat at least one of said tool halves.
In a compression moulding press having fixed and moving platen means for receiving and supporting the halves of a moulding tool therebetween, the improvement comprising a shroud member mounted for sliding movement around and in sealing relation to one of said tool halves towards and into sealing engagement with the other of said tool halves thereby to define with said tool halves when closed together a substantially closed chamber enclosing said moulding tool, together with actuating means operable to slide said shroud, one of said tool halves having a continuous peripheral piston seal disposed thereon to effect said sealing relation and means operable to at least partially evacuate said closed chamber when so defined.
In a compression moulding press having fixed and moving platen means for receiving and supporting the halves of a moulding tool therebetween, the improvement comprising a shroud member mounted for sliding movement around and in sealing relation to one of said tool halves towards and into sealing engagement with the other of said tool halves thereby to define with said tool halves when closed together a substantially closed chamber enclosing said moulding tool, together with actuating means operable to slide said shroud, one of said tool halves having a continuous peripheral piston seal disposed thereon to effect said sealing relation means operable to at least partially evacuate said closed chamber when so defined and induction heating means associated with at least one of said tool halves operable to heat said tool half.
Dependencies are inferred from the claim text.