GB875311A - Improvements in or relating to casting moulds - Google Patents
Improvements in or relating to casting mouldsInfo
- Publication number
- GB875311A GB875311A GB18365/59A GB1836559A GB875311A GB 875311 A GB875311 A GB 875311A GB 18365/59 A GB18365/59 A GB 18365/59A GB 1836559 A GB1836559 A GB 1836559A GB 875311 A GB875311 A GB 875311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- injection
- injection plunger
- pressure
- controlled
- piston
- 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- 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)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
875,311. Moulds. MAHLE-WERK G.m.b.H. May 29, 1959 [June 11, 1958], No. 18365/59, Class 83 (1). A pressure die-casting mould comprises a metal injection plunger piston movable in a metal inlet channel which leads to the die cavity and a constriction in the channel close to said cavity and means for adjusting the constriction so as to vary the size of the channel. In one embodiment the insert 5 is moved bv a differential piston 7 acted upon by pressure fluid controlled by valves 9, 10 themselves controlled by stops 17, 18 on the injection plunger 6. At the beginning of the operation the parts are in the positions shown and pressure fluid holds the slide 5 downward to make the gate of small cross-section. As the injection plunger moves upwards on its injection stroke valve 10 opens to supply pressure medium beneath the piston 7 so that it moves upwards and the cross-section of the gate is increased. In a modification, Fig. 3 (not shown), the slide is controlled by hydraulic pistons in accordance with a change of pressure on the injection plunger during the injection.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE875311X | 1958-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875311A true GB875311A (en) | 1961-08-16 |
Family
ID=6817220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18365/59A Expired GB875311A (en) | 1958-06-11 | 1959-05-29 | Improvements in or relating to casting moulds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875311A (en) |
-
1959
- 1959-05-29 GB GB18365/59A patent/GB875311A/en not_active Expired
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