US 4,560,281 AGranted

Foundry apparatus for mixing sand with binder

AssigneeFoundry Automation, Inc.

InventorsDavid L. Harris, Colin Taylor

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Abstract

Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds includes a first premixing chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a first binder ingredient to produce a first sand/binder ingredient mixture. A second premixing chamber, separate from the first premixing chamber, encloses a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling sand with a second binder ingredient to produce a second sand/binder ingredient mixture. A final mixing chamber includes agitators for receiving the sand/binder ingredient mixtures and blending them into a composite mixture while simultaneously transporting the composite mixture to a final discharge station. A single power-driven unit operates for driving the first and second bladed shafts, which in turn, operate the first and second agitators.

Claims25

Dependent claims

Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds comprising:

first premixing means defined by a first tubular chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a first binder ingredient to produce a first sand/binder ingredient mixture;
second premixing means defined by a second tubular chamber disposed adjacent and separate from the first premixing means enclosing a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling sand with a second binder ingredient to produce a second sand/binder ingredient mixture;
final mixing means defined by a blending chamber enclosing a first agitator means rotatably driven by the first bladed shaft and a second agitator means rotatably driven by the second bladed shaft operable for receiving and blending the first and second sand/binder ingredient mixtures into a composite mixture while simultaneously transporting the composite mixture to a final discharge station, the first agitator means being rotatable about a longitudinal axis aligned with the first axis and the second agitator means being rotatable about a longitudinal axis aligned with the second axis;
and
single power-driven means operable for driving the first and second bladed shafts.

2 more elements

Apparatus for mixing and conveying materials comprising:

first premixing means defined by a first tubular chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling particulate material with a first ingredient to produce a first particulate material/ingredient mixture;
second premixing means defined by a second tubular chamber disposed adjacent and separate from the first premixing means enclosing a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling particulate material with a second ingredient to produce a second particulate material/ingredient mixture;
final mixing means defined by a blending chamber enclosing a first agitator means rotatably driven by the first bladed shaft and a second agitator means rotatably driven by the second bladed shaft operable for receiving and blending the first and second particulate material/ingredient mixtures into a composite mixture while simultaneously transporting the composite mixture to a final discharge station, the first agitator means being rotatable about a longitudinal axis aligned with the first axis and the second agitator means being rotatable about a longitudinal axis aligned with the second axis;
and
single power-driven means operable for driving the first and second bladed shafts.

2 more elements

Dependencies are inferred from the claim text.