(19)
(11) EP 0 299 941 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.02.1990 Bulletin 1990/06

(43) Date of publication A2:
18.01.1989 Bulletin 1989/03

(21) Application number: 88850249.9

(22) Date of filing: 14.07.1988
(51) International Patent Classification (IPC)4: B22C 13/00, B22C 15/00
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 15.07.1987 SE 8702873

(71) Applicant: Hybe Maskin System AB
S-305 90 Halmstad (SE)

(72) Inventor:
  • Bergström, Henry
    S-302 56 Halmstad (SE)

(74) Representative: Nilsson, Lennart 
Lennart Nilsson Patentbyra AB, Box 271
311 23 Falkenberg
311 23 Falkenberg (SE)


(56) References cited: : 
   
       


    (54) An apparatus for under compaction or ramming in a moulding machine


    (57) The disclosure relates to an apparatus for the under-compaction or ramming of a mould model into a moulding box in the manufacture of sand moulds in a moulding machine, such as a high pressure moulding machine with a jolter, sand dispenser, membrane pressure plate etc., a mould board (2) with a model (1) being mounted on a raisable and lowerable portion (3, 4) in a cassette which is trans­portable to and away from the workplace in a moulding machine and forms a lower portion in a moulding box.







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