GB988748A - Improvements in or relating to devices for producing foundry moulds and foundry cores and other moulding composition blanks - Google Patents
Improvements in or relating to devices for producing foundry moulds and foundry cores and other moulding composition blanksInfo
- Publication number
- GB988748A GB988748A GB979663A GB979663A GB988748A GB 988748 A GB988748 A GB 988748A GB 979663 A GB979663 A GB 979663A GB 979663 A GB979663 A GB 979663A GB 988748 A GB988748 A GB 988748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- ramming
- joint
- frame
- during
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
988,748. Moulding-machines. F. HANSBURG. March 12, 1963 [March 23, 1962], No. 9796/63. Heading B3F. A sand shooting head comprises a ramming plate and a ramming frame or false flask which latter is locked to the head and mounted on the flask during the blowing, and is unlocked so as to be movable relatively to the head during pressing of the sand against the ramming plate, and is characterized in that a compressed-airactuated sealing joint is arranged at the bearing surfaces of the ramming frame, which joint is placed under pressure during the blowing and is vented during the ramming. The blowhead 6 comprises an inner perforated lining 4 through which pressure air is supplied to the sand contained therein from an annular reservoir 12 through an inlet 31 controlled by a ring valve 18. The lower end of the head incorporates a ramming plate 55 and is embraced by a ramming frame 8 which may be locked to the head by hydraulic cylinders 15, Fig. 1. The bearing surface between the frame 8 and the head 6 is sealable by a compressed air joint 62 which is connected to the head venting valves 9, so that when the valves are closed the joint is pressurized, when they are open the joint is vented. The ramming frame has vents 70 in its sides which are covered by filter plates 73 and through which air in the flask is vented during filling. The filling of the head is controlled by a diaphragm valve 17, Fig. 2, which controls the opening and closing of a slider 28 mounted on rollers 40 and sealed off from below in its closure position by a compressed air joint 22. After blowing, during which the compressed air joint 62 is pressurized, the ramming frame is unlocked from the head 6, the venting valves 9 are opened to vent the head 6 and the joint 62, and the sand is rammed by upward movement of the table 14 together with the flask 71 and ramming frame 8. Specifications 763,036 and 853,164 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT575262 | 1962-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB988748A true GB988748A (en) | 1965-04-07 |
Family
ID=11120419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB979663A Expired GB988748A (en) | 1962-03-23 | 1963-03-12 | Improvements in or relating to devices for producing foundry moulds and foundry cores and other moulding composition blanks |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH424098A (en) |
| GB (1) | GB988748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2244443A (en) * | 1990-04-20 | 1991-12-04 | Fischer Ag Georg | Method and device for compressing granular moulding materials |
| GB2256385A (en) * | 1991-03-21 | 1992-12-09 | Gisag Ag | A sand shooting device for foundry moulding machine |
-
1963
- 1963-03-12 CH CH313063A patent/CH424098A/en unknown
- 1963-03-12 GB GB979663A patent/GB988748A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2244443A (en) * | 1990-04-20 | 1991-12-04 | Fischer Ag Georg | Method and device for compressing granular moulding materials |
| GB2244443B (en) * | 1990-04-20 | 1994-06-01 | Fischer Ag Georg | Method and device for compressing granular moulding materials |
| GB2256385A (en) * | 1991-03-21 | 1992-12-09 | Gisag Ag | A sand shooting device for foundry moulding machine |
| ES2053379A2 (en) * | 1991-03-21 | 1994-07-16 | Gisag Ag Giesserei Masch | A sand shooting device for foundry moulding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CH424098A (en) | 1966-11-15 |
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