Plastic granulator stationary cutting segment
AssigneeSize Reduction Specialists Corp.
InventorDonald Maynard
Life of this patent
Estimating the term…
Abstract
A plastic granulator apparatus stationary cutting segment includes a segment rail having multiple arcuate spaced teeth. Each tooth of the plurality of arcuate spaced teeth has a tooth surface and is spaced to be complementary to a rotary cutter segments as a rotary cutter is rotated. The segment rail is adapted to be mounted to a granulator housing. The rail segment has a shoulder with a shoulder surface, the shoulder is adjacent to each of a set of arcuate spaced teeth. The shoulder has a shoulder surface height of between 0 and 10 mm, and a stepback distance of between 0 and 2 mm between the shoulder surface and the arcuate tooth surface. The shoulder and the arcuate tooth surface define an angle therebetween of 90° and 130°, and the shoulder surface defines an angle between 90° and 130°.
Claims11
A plastic granulator stationary cutting segment comprising:
- a segment rail having a plurality of arcuate spaced teeth, each of said plurality of arcuate spaced teeth defining a tooth surface;
- and
- a shoulder having a first shoulder surface that extends away from each said tooth surface of said rail segment, and a second shoulder surface that intersects said first shoulder surface at a point that defines an edge, said edge has one or more V-shaped grooves or scallops between adjacent teeth of said plurality of arcuate spaced teeth, said second shoulder surface is parallel to and non-coplanar with the tooth surface where both said second shoulder surface and said tooth surface have a slope gamma (λ) of between 20° and 40° relative to an axis B-B that is perpendicular to a mounting base of said rail segment, said first shoulder surface being adjacent to each of said plurality of arcuate spaced teeth, said first shoulder surface having a height h of between 1 and 10 mm measured from the tooth surface to the second shoulder surface, and a stepback distance m of between 1 and 2 mm, said first shoulder surface and the tooth surface define an angle a therebetween of between 90° and 130° , said first shoulder surface having a rearward angle delta (δ) of between 20° and 40° relative to an axis A-A that is parallel to the mounting base.
Dependencies are inferred from the claim text.