GB1233060A - - Google Patents
Info
- Publication number
- GB1233060A GB1233060A GB1233060DA GB1233060A GB 1233060 A GB1233060 A GB 1233060A GB 1233060D A GB1233060D A GB 1233060DA GB 1233060 A GB1233060 A GB 1233060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- piston
- accumulator
- mould
- valves
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
1,233,060. Injection moulding machine. G. FRIES, A. EYSSEN, and G. ROMEN, [trading as J. S. FRIES SOHN]. 21 June, 1968 [10 Nov., 1967], No. 29786/68. Heading B5A. [Also in Divisions B3 and F1] Apparatus for filling a pressure casting mould with moulding material comprises a first hydraulic pressure accumulator 3 for providing a relatively low initial mould filling pressure and a second hydraulic pressure accumulator 4 providing a high final mould-filling pressure, the working medium volume of the second accumulator being smaller than that of the first. At the start of the moulding cycle the valves 5, 6, 7, 8, 9, 10 and 14 are positioned as shown in Fig. 1. The valves 14 and 5 are opened and pressure is applied from a conduit 13 which opens a non-return valve 6 to apply pressure through a narrow bore 16 on to the working piston 1. The working piston operates a moulding material ram (not shown). At first the piston 1 advances slowly the fluid in front of the piston escaping through vents (not shown) to expel air from the mould. Next valves 7 and 9 are opened, opening a valve 8 to allow fluid to escape along a duct 15 and subject the piston 1 to pressure from the accumulator 3, thus accelerating the piston 1. When either the ram has travelled a preset distance or the pressure in the mould reaches a preset level, a valve 10 is opened to subject the piston 1 to an intense pressure obtained from the second accumulator 4. The volume of of the fluid released is just sufficient to close valves 6 and 8 and shut off the pressure supply from the first reservoir. The final high pressure is applied as the moulded material solidifies in the mould. The pressure in accumulator 4 can be varied by connection to a closed piston and cylinder device 11, 17, 18, 19 in which the volume of working fluid is adjustable.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0054002 | 1967-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1233060A true GB1233060A (en) | 1971-05-26 |
Family
ID=7106760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1233060D Expired GB1233060A (en) | 1967-11-10 | 1968-06-21 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1583631C3 (en) |
GB (1) | GB1233060A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766964A (en) * | 1971-11-22 | 1973-10-23 | Idra Pressen Gmbh | Method of controlling the connection of the multiplier on the pressure piston of a multiple pressure casting machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BG31832A1 (en) * | 1980-04-02 | 1982-04-15 | Vutov | Method for liquid or semi- liquid stamping |
-
1967
- 1967-11-10 DE DE19671583631 patent/DE1583631C3/en not_active Expired
-
1968
- 1968-06-21 GB GB1233060D patent/GB1233060A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766964A (en) * | 1971-11-22 | 1973-10-23 | Idra Pressen Gmbh | Method of controlling the connection of the multiplier on the pressure piston of a multiple pressure casting machine |
Also Published As
Publication number | Publication date |
---|---|
DE1583631C3 (en) | 1975-11-06 |
DE1583631A1 (en) | 1970-08-27 |
DE1583631B2 (en) | 1975-03-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PCNP | Patent ceased through non-payment of renewal fee |