Self-adjusting mold backplate
OwnerCharles R. Baconinventor
Life of this patent
Estimating the term…
Abstract
A backplate assembly for supporting the molds of blowmolding machines having plural molds wherein the backplate assembly consists of two planar plates having a resilient elastic compressible cushion disposed therebetween to permit limited self-adjustment of the plates as determined by pressure produced upon the mold halves closing. The cushion is formed by an elongated spirally configured elastic resilient strand located within recesses formed in the plates, and the configuration of the strand may be related to the distribution of compressive forces imposed on the backplate assembly.
Claims9
A self-adjusting mold backplate assembly for molding dies adapted to be mounted upon a molding machine platen comprising, in combination, a first plate of planar configuration having an outer surface and a flat inner surface, first mounting means defined on said first plate for attaching said first plate to a mold machine platen with said outer surface disposed toward the machine platen, a second plate of planar configuration having an inner surface and a flat outer surface, second mounting means defined on said first plate for mounting said second plate upon said first plate with said second plate outer surface disposed toward said first plate inner surface and spaced therefrom, third mounting means defined on said second plate for mounting a molding die disposed toward said second plate inner surface, and a resilient elastomeric cushion located between and compressed between said first plate inner surface and said second plate outer surface maintaining the spacing between said first and second plates and permitting limited self-adjustment of the spacing therebetween, said first plate inner surface and said second plate outer surface each having substantially equal spaced opposed cushioned areas, said area of said second plate substantially comprising the entire flat configuration of said second plate, said resilient elastic cushion being located over substantially all of said areas, said cushion comprising a plurality of spaced resilient longitudinal segments spaced over said area.
A self-adjusting mold backplate assembly for molding dies adapted to be mounted upon a molding machine platen comprising, in combination, a first plate of planar configuration having an outer surface and an inner surface, first mounting means defined on said first plate for attaching said first plate to a mold machine platen with said outer surface disposed toward the machine platen, a second plate of planar configuration having inner and outer surfaces, second mounting means defined on said first plate for mounting said second plate upon said first plate with said second plate outer surface disposed toward said first plate inner surface and spaced therefrom, third mounting means defined on said second plate for mounting a molding die disposed toward said second plate inner surface, said first plate inner surface and said second plate outer surface being flat, a plurality of first elongated recesses defined in said first plate inner surface, a plurality of second elongated recesses defined in said second plate complementary in configuration to said first recesses and in aligned opposed spaced relation thereto, and elongated resilient elastic cushion segments located within said recesses and partially confined thereby, said cushion segments maintaining said first plate inner surface and said second plate outer surface in spaced relationship and permitting limited cushioned movement therebetween.
Dependencies are inferred from the claim text.