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US 11,613,057 B2Granted
Method and tool for injection moulding
AssigneeFlexiject AB
InventorLennart Karlsson
Life of this patent
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AssigneeFlexiject AB
InventorLennart Karlsson
Estimating the term…
Method for injection moulding one or more parts using an injection moulding machine and tool (12, 13) comprising at least one mould cavity (17), and a feed system comprising at least one gate (18) and at least one runner (19, 20, 21) that is located upstream of the at least one gate (18). The at least one runner (19, 20, 21) comprises a at least one moveable wall and the method comprises the step of changing at least one cross-sectional dimension (T, B, H, S or S+ΔS) of the at least one runner (19, 20, 21) by moving the at least one moveable wall in order achieve at least one of the following: a) to vary a flow rate of material in the at least one runner (19, 20, 21), b) to apply a holding pressure to material in the at least one runner (19, 20, 21) and consequently to the at least one mould cavity (17), c) to compress residue in the at least one runner (19, 20, 21).
Method for injection moulding two or more parts with a different size, shape and/or volume simultaneously using an injection moulding machine and tool comprising two or more mould cavities, and a feed system comprising at least one gate and a plurality of runners located upstream of said at least one gate, wherein said plurality of runners comprises at least one moveable wall and said method comprises the step of changing at least one cross-sectional dimension of said plurality of runners by moving said movable wall in order to achieve at least one of the following:
Dependencies are inferred from the claim text.