GB1254324A - Improvements in or relating to pressure casting machines - Google Patents
Improvements in or relating to pressure casting machinesInfo
- Publication number
- GB1254324A GB1254324A GB44269A GB44269A GB1254324A GB 1254324 A GB1254324 A GB 1254324A GB 44269 A GB44269 A GB 44269A GB 44269 A GB44269 A GB 44269A GB 1254324 A GB1254324 A GB 1254324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- piston
- valve
- accumulator
- stroke
- 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
Abstract
1,254,324. Casting metals. DRUCKGUSS HEIDENAU VEB. 3 Jan., 1969, No. 442/69. Heading B3F. [Also in Division F1] The ram of a pressure-casting machine is driven by a two diameter piston 1, 1a which completes part of its stroke at one speed when hydraulic fluid from a pump 15 is supplied to a chamber 9 and the remainder of its stroke at increased speed when the output of an accumulator 19 is supplied to the chamber 9. When movement of the piston 1 is stopped due to the mould becoming full, an annular piston 3, 3a surrounding the small diameter piston portion la continues to move in the original direction due to its inertia. Thus hydraulic fluid in a cylinder space 7 is displaced by the annular piston portion 3a into a second pressure accumulator 13, the charging pressure of which is controlled by a valve 22. To return the pistons 1, la and 3, 3a, a changeover valve 14 is moved to the position shown, thereby exhausting chamber 9 and pressurizing a return chamber 8. The change in speed during the forward stroke is caused when a switch 20 is operated by a rod 21 movable with the piston 1, 1a. Operation of the switch 21 causes opening of a valve 18 which allows the accumulator 19 to discharge at a rate determined by an adjustable valve 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44269A GB1254324A (en) | 1969-01-03 | 1969-01-03 | Improvements in or relating to pressure casting machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44269A GB1254324A (en) | 1969-01-03 | 1969-01-03 | Improvements in or relating to pressure casting machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1254324A true GB1254324A (en) | 1971-11-17 |
Family
ID=9704411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44269A Expired GB1254324A (en) | 1969-01-03 | 1969-01-03 | Improvements in or relating to pressure casting machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1254324A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4924673A (en) * | 1988-02-17 | 1990-05-15 | Automotive Products Plc | Master cylinder with parallel-bore reservoir |
| CN100577400C (en) * | 2008-07-01 | 2010-01-06 | 南通市南方润滑液压设备有限公司 | Controllable type rolling machine hydraulic system |
| CN112792312A (en) * | 2020-12-25 | 2021-05-14 | 重庆百吉四兴压铸有限公司 | High-pressure casting method by using speed-cut pressure injection |
-
1969
- 1969-01-03 GB GB44269A patent/GB1254324A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4924673A (en) * | 1988-02-17 | 1990-05-15 | Automotive Products Plc | Master cylinder with parallel-bore reservoir |
| CN100577400C (en) * | 2008-07-01 | 2010-01-06 | 南通市南方润滑液压设备有限公司 | Controllable type rolling machine hydraulic system |
| CN112792312A (en) * | 2020-12-25 | 2021-05-14 | 重庆百吉四兴压铸有限公司 | High-pressure casting method by using speed-cut pressure injection |
| CN112792312B (en) * | 2020-12-25 | 2022-02-11 | 重庆百吉四兴压铸有限公司 | High-pressure casting method by using speed-cut pressure injection |
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