Systems for the feeding of plastics materials to plastics working machines
AssigneesS.T.B. Engineering Limited, Oaktree Equipment Limited
InventorsMaurice Gordon Ballinger, Raymond Mitchell Oakerbee
Life of this patent
Estimating the term…
Abstract
A system for supplying plastics material to a plastics working machine, such as a blow moulding machine comprising automatic means for removing waste from a plastics working machine, a conveyor for feeding the waste to a comminuting machine, a hopper for comminuted plastics waste, and a conveying mechanism for mixing and conveying the plastics waste and fresh plastics material to a further hopper that is arranged to supply the inlet of the plastics working machine.
Claims10
A system for feeding plastics material to the inlet of at least one plastics working machine, said system comprising automatic means for removing plastics waste from the plastics working machine, a comminuting machine, a conveyor for feeding collected waste to said comminuting machine, a conveying mechanism for mixing the comminuted plastics waste and fresh plastics material, and container means for receiving the mixture from said conveying mechanism and for supplying the plastics working machine with the mixed plastics waste and fresh plastics material, said conveying mechanism comprising a first probe tube, a first container for comminuted plastics waste, said first probe tube projecting into said first container, a first venturi having one inlet connected to said probe tube and a second inlet connected to a source of air under pressure, said first venturi having an outlet, a hose connected to the outlet of said first venturi, a union connected to said hose, said conveying mechanism further comprising a second probe tube, a second container for fresh plastics material, said second probe tube projecting into said second container, a second venturi connected to said second probe tube and to a source of air under pressure, said second venturi being connected to said union, said union being coupled to said container means for supplying the mixed plastics waste and fresh plastics material to the inlet of the plastics working machine.
A system for feeding plastics material to at least one plastics working machine, said system comprising automatic means for removing plastics waste from the plastics working machine, a conveyor for receiving collected waste from the automatic removing means, a comminuting machine connected to the conveyor for receiving the waste therefrom and for producing comminuted plastics waste, container means for receiving comminuted plastics waste produced by the comminuting machine, and a conveying mechanism for mixing and conveying the comminuted plastics waste and fresh plastics material to an inlet of the plastics working machine to supply that inlet with mixed plastics waste and fresh plastics material, said conveying mechanism comprising a flexible Archimedian screw, said container means comprising a hopper divided into two parts, each part having a variable outlet in communication with said conveying mechanism containing the Archimedian screw.
A system for feeding plastics material to at least one plastics working machine, said system comprising automatic means for removing plastics waste from the plastics working machine, a conveyor for receiving collected waste from the automatic removing means, a comminuting machine connected to the conveyor for receiving the waste therefrom and for producing comminuted plastics waste, container means for receiving comminuted plastics waste produced by the comminuting machine, and a conveying mechanism for mixing and conveying the comminuted plastics waste and fresh plastics material to an inlet of the plastics working machine to supply that inlet with mixed plastics waste and fresh plastics material, said conveying mechanism comprising a flexible Archimedian screw, a conduit connected to said Archimedian screw for carrying the mixture of waste and fresh plastics material, said conduit having an end remote from said screw with a discharge outlet thereat, and a second Archmedian screw in said conduit at said discharge outlet.
Dependencies are inferred from the claim text.