Extrusion molding process and the related apparatus
OwnerIng Chung Huanginventor
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Abstract
An extrusion molding process including the steps of: i) extruding a material through an extruding die into a tubular molding. ii) driving two clamping devices to clamp the tubular molding at different elevations, causing an air-tight space to be formed within the tubular. iii) closing two symmetrical halves of a molding die on the molding between the clamping devices and simultaneously lowering one clamping device to stretch the molding downwards, causing the molding to be compressed in a die cavity between the two symmetrical halves of the molding die and molded into the desired finished product: and iv) opening the molding die from the finished product and returning the clamping devices to their former positions.
Claims15
An extrusion molding process including the steps of:
- i) extruding a material through an extruding die into a tubular molding;
- ii) driving a first clamping device and a second clamping device to clamp said tubular molding at different elevations, causing an air-tight space to be formed within said tubular between said clamping devices, said first clamping devices being driven to clamp a lower end of said molding, said second clamping device being driven to clamp an upper end of said molding,
- iii) closing two symmetrical halves of a molding die on said molding between said clamping devices, causing said molding to be compressed in a die cavity between the two symmetrical halves of said holding die and molded into finished product;
- and
- iv) opening said molding die from said finished product and returning said clamping devices to their former positions.
Dependencies are inferred from the claim text.