GB928100A - Improvements in or relating to die casting machines - Google Patents
Improvements in or relating to die casting machinesInfo
- Publication number
- GB928100A GB928100A GB12392/61A GB1239261A GB928100A GB 928100 A GB928100 A GB 928100A GB 12392/61 A GB12392/61 A GB 12392/61A GB 1239261 A GB1239261 A GB 1239261A GB 928100 A GB928100 A GB 928100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- piston
- die
- valve
- plunger
- 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
- B22D17/14—Machines with evacuated die cavity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
928,100. Casting-machines. DIE CASTING MACHINE TOOLS Ltd., and A. R. MILLS. April 3, 1962 [April 6, 1961], No. 12392/61. Class 83 (1). In a pressure die casting machine evacuation of the die cavity is effected in conjunction with the injection operation, whereby a piston 22 within cylinder 23 is controlled for injection and return movements of plunger 21, to which it is attached, by admission of a pressure medium via pipe 24 and valve 25 alternately to each side of the piston 22. Connected to cylinder 23 is a pressure responsive switch 30 so that when a given pressure is reached within cylinder 23 to promote a downward injection movement of the plunger 21, this same pressure closes contacts 32, 33 within switch 30 which then energizes a solenoid coil 35 of a valve 29 which lifts movable valve member 36 from its seating which permits the evacuation of the die cavities by extraction pump 28 via reservoir 27. At the end of the injection stroke of the plunger, pressure is applied to the other side of piston 22 to return said piston to its original position. This creates a pressure drop in relation to the switch 30 which breaks contact and permits the closure of the valve 29 to cut off the die evacuating means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12392/61A GB928100A (en) | 1961-04-06 | 1961-04-06 | Improvements in or relating to die casting machines |
| FR893558A FR1319201A (en) | 1961-04-06 | 1962-04-06 | Improvements to die-casting machines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12392/61A GB928100A (en) | 1961-04-06 | 1961-04-06 | Improvements in or relating to die casting machines |
| FR893558A FR1319201A (en) | 1961-04-06 | 1962-04-06 | Improvements to die-casting machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB928100A true GB928100A (en) | 1963-06-06 |
Family
ID=32910282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12392/61A Expired GB928100A (en) | 1961-04-06 | 1961-04-06 | Improvements in or relating to die casting machines |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1319201A (en) |
| GB (1) | GB928100A (en) |
-
1961
- 1961-04-06 GB GB12392/61A patent/GB928100A/en not_active Expired
-
1962
- 1962-04-06 FR FR893558A patent/FR1319201A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1319201A (en) | 1963-02-22 |
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