Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
  • B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
  • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22C—FOUNDRY MOULDING
  • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
  • B22C15/23—Compacting by gas pressure or vacuum

Definitions

• An apparatus for simultaneous making of matching mould parts with a horizontal parting face An apparatus for simultaneous making of matching mould parts with a horizontal parting face.
• the invention relates to an apparatus for simultaneous making of matching mould parts witn a horizontal part ⁇ ing face.
• the apparatus includes a shared pattern car ⁇ rier, to which an upper and a lower half pattern are secured, moulding chambers being provided above and below the pattern carrier, said moulding chambers hav- ing movable squeeze plates for post-compacting as top and bottom, respectively, whereby the moulding chambers can be impulsively subjected to vacuum for sucking in moulding material, preferably moulding sand, through the squeeze plates, and whereby the moulding material is fed to the lower moulding chamber through an essen ⁇ tially L-shaped down pipe, whose upper end is connected with a materials container above the moulding chambers, and whose lower end is connected with the squeeze plate in the lower moulding chamber.
• the obj ect of the invention is to provide a solution to the problem referred to above, so that a comparatively smal l vacuum in the moulding chamber wil l ensure satis ⁇ factory fil ling of the moulding chamber, meaning that when using post-compaction via the movabl e squeeze pl ate, moul d parts with uniform density and strength are achieved.
• this is achieved by an apparatus of the type described in the opening para ⁇ graph and characterized in that at least one air intake opening is provided at the lower corner of the L-shaped down pipe.
• a screen pl ate is placed above intake ope ⁇ nings, while forming a slot at the bottom of the down pipe in its entire width and opening towards the chan ⁇ nel below the moulding chamber.
• the inlet opening in the lower moulding chamber may be a slot provided centrally in the squeeze plate with a length equal to the moul ⁇ ding chamber.
• a connecting part tapered in V-shape is provided between the lower portion of the down pipe and the slot in the squeeze plate, said connecting part having a width equal to the slot.
• the central slot in the squeeze plate may be from 30 to 90 mm wide, preferably 55 mm. Experiments have shown that slot widths within this interval provide satisfactory filling of the moulding chamber, and particularly favourable results have been achieved with a slot width of 55 mm.
• the apparatus shown in fig. 1 consists of a telescopic down pipe 9, which forms a connecting channel between a container 10 for moulding material, preferably moulding sand, and a lower moulding chamber 5.
• the moulding material 8 is suggested by the wavy line in the contai ⁇ ner 10.
• the materials container 10 is moreover connected with an upper moulding chamber 4.
• a shared pattern carrier 1 is placed between the upper and the lower moulding chamber designated by 4 and 5, respectively, and to the said carrier are secured an upper and a lower half pattern, designated by 2 and 3, respectively.
• the moulding chambers 4 and 5 are defined upwardly and downwardly by squeeze plates 6 and 7, which are provided with inlet openings 17 for the moulding material.
• the squeeze plates 6 and 7 can form closed moulding spaces jointly with the moulding cham ⁇ bers 4 and 5 and the lower side of the shared pattern carrier 1.
• Moulding sand or other moulding material is injected through the openings in the squeeze plates into the said moulding spaces by impulsive intake. The intake will be provided by applying vacuum through the shared pattern carrier and/or the sides of the moulding chamber .
• post-compaction is made by feeding the squeeze plates 6 and 7, respective- 5 ly, towards the shared pattern carrier.
• the squeeze plates are then moved away from the pattern carrier, which is removed from the area between the moul ding chambers, and the two moul d parts made are caused to close up so as to form a complete mould.
• 10 Cores may have been inserted in advance in the moul d impression provided in the mould parts.
• the lower section 11 of the down pipe is connected with 20. the lower moulding chamber 5 through a connecting part 18, tapered in V-shape in the direction of the slot 17 in the squeeze plate 7.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Casting Devices For Molds (AREA)
• Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8098639

Family Applications (1)

Country Status (10)

Citations (1)

Family Cites Families (1)

• 1986
  • 1986-02-26 DK DK088686A patent/DK159599C/da not_active IP Right Cessation
  • 1986-04-02 JP JP61074374A patent/JPS62199247A/ja active Granted
• 1987
  • 1987-02-24 BR BR8706034A patent/BR8706034A/pt unknown
  • 1987-02-24 CN CN87100907A patent/CN1006608B/zh not_active Expired
  • 1987-02-24 EP EP87901408A patent/EP0261157B1/en not_active Expired
  • 1987-02-24 WO PCT/DK1987/000017 patent/WO1987005239A1/en not_active Ceased
  • 1987-02-24 UA UA4203608A patent/UA6029A1/uk unknown
  • 1987-02-24 US US07/108,829 patent/US4739820A/en not_active Expired - Lifetime
  • 1987-02-24 KR KR1019870700978A patent/KR910001173B1/ko not_active Expired
  • 1987-10-23 SU SU874203608A patent/SU1579447A3/ru active

Patent Citations (1)

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