Sand moulding machine with improved sand blow

Details Sand moulding machine with improved sand blow Sand moulding machine with improved sand blow

2005-03-29

2005-03-29

Stoner, Kiley S. (Department: 1725)

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

C164S241000

Reexamination Certificate

active

06871689

ABSTRACT:
Moulding machine (1) for the moulding of sand moulds (4, 5) by blowing sand in through slitshaped openings (14, 15) extending across each side plate (16, 17) of a moulding box (6, 7). Into the boxes (6, 7) extend moulding patterns (12, 13). At least one of the end parts (18, 19) of the slitshaped openings has a greater width than the central part (20, 21) thereof. When the sand is blown in through the openings (14, 15) a greater amount of sand is achieved at the peripheral region of the boxes (6, 7) than when the end parts has no greater width than the central part of the opening. Consequently, by the present solution is achieved a greater hardness of the squeezed sand moulds at the peripheral region than by the prior art solutions.

REFERENCES:
patent: 1-130841 (1989-05-01), None
patent: 7-39996 (1995-02-01), None

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