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US 7,845,935 B2Granted
Lightweight knockout for forming die assembly
AssigneeDixie Consumer Products LLC
InventorsAlbert D. Johns, Stephen K. Milligan, Mircea Sofronie
Life of this patent
Estimating the term…
Abstract
A die assembly for producing paperboard pressware includes a lightweight knockout assembly having a long and narrow ejection member positioned within a slotted adapter plate. The provision of a lightweight knockout assembly reduces frictional wear-related maintenance and downtime.
Claims18
A press-forming apparatus comprising:
- a male forming member;
- a female forming member, wherein either the male forming member or the female forming member comprises a product-forming surface disposed thereon, the product-forming surface having an elongated slot formed therethrough in a machine direction and wherein the elongated slot is formed between two adapter plates, an upper portion of the adapter plates defining the product-forming surface;
- and
- an ejector disposed within the elongated slot, wherein the ejector is movable in a direction perpendicular to the product-forming surface.
1 more element
An apparatus for forming a pressware product, comprising:
- at least one die member having a lightweight knockout assembly mounted therein, said lightweight knockout assembly comprising:
- an adapter plate having a length and a width corresponding to respective dimensions of a bottom panel of the pressware product to be formed;
- and
- an ejector having a length of at least about 75% the length of the adapter plate and a width of no more than about 50% the width of the adapter plate, wherein the adapter plate comprises first and second portions, and wherein the ejector extends between the first and second portions.
1 more element
A press-forming apparatus comprising:
- a male forming member;
- a female forming member, wherein either the male forming member or the female forming member comprises a product-forming surface having an elongated slot extending therethrough in a machine direction, and wherein the elongated slot is formed between two adapter plate halves, an upper portion of the adapter plate halves defining the product-forming surface;
- and
- an ejector movable between a retracted position within the elongated slot and an extended position projecting outward of the elongated slot.
1 more element
An apparatus for forming a pressware product, comprising:
- at least one die member comprising a lightweight knockout assembly mounted therein, said lightweight knockout assembly comprising:
- an adapter plate having a length and a width corresponding to respective dimensions of a bottom panel of the pressware product to be formed, wherein the adapter plate comprises first and second adapter plate halves;
- and
- an ejector having a length of at least about 75% the length of the adapter plate and a width of no more than about 50% the width of the adapter plate, wherein the ejector extends between the first and second adapter plate halves.
1 more element
Dependencies are inferred from the claim text.