Compression molding apparatus
AssigneeGraham Packaging Company, L.P.
InventorScott W. Steele
Life of this patent
Estimating the term…
Abstract
Apparatus for compression molding plastic articles includes a plurality of molds mounted for travel around a first axis. Each mold includes an upper mold section and a lower mold section, with at least one of the upper and lower mold sections being moveable in a non-circular first endless path, and being moveable with respect to the other mold section to form a mold cavity. A mold charge delivery system delivers individual mold charges to the mold cavities and includes at least one delivery mechanism that travels in a second endless path around a second axis spaced from the first axis, wherein the second endless path overlies a portion of the first endless path.
Claims12
Apparatus for compression molding plastic articles, comprising:
- a plurality of molds mounted for travel along a first endless path around a first axis, each of said molds including an upper mold section and a lower mold section, at least one of said mold sections being moveable in a first direction parallel to said first axis over a portion of said first endless path with respect to the other, at least one of said mold sections being movable, in a second direction orthogonal to said first axis over said portion of said first endless path and;
- a mold charge delivery system for receiving mold charges from a source of plastic material to deliver individual mold charges to said molds in turn and including at least one delivery mechanism that travels in a second endless path around a second axis parallel to said first axis, said second endless path overlying said portion of said first endless path.
Apparatus for compression molding plastic articles, comprising:
- a plurality of molds mounted for travel around a vertical axis, each of said molds including an upper mold section and a lower mold section, said lower mold sections being moveable about said vertical axis in a first endless path that has at least a portion that is non-circular, said upper mold sections being moveable in a generally circular path, said lower mold sections also being moveable vertically with respect to the upper mold sections to form a mold cavity;
- and
- a mold charge delivery system for receiving mold charges from a source of plastic material to deliver individual mold charges to said cavities in turn and including at least one delivery mechanism that travels in a second endless path around a second axis parallel to said vertical axis, said second endless path overlying at least some of the non-circular portion of said first endless path.
Dependencies are inferred from the claim text.