GB935692A - Hydraulic extrusion press - Google Patents
Hydraulic extrusion pressInfo
- Publication number
- GB935692A GB935692A GB3924359A GB3924359A GB935692A GB 935692 A GB935692 A GB 935692A GB 3924359 A GB3924359 A GB 3924359A GB 3924359 A GB3924359 A GB 3924359A GB 935692 A GB935692 A GB 935692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cylinder
- plunger
- piston
- pressure
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/211—Press driving devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Abstract
935,692. Extruding. HYDRAULIK G.m.b.H. Nov. 19, 1959 [Dec. 5, 1958], No. 39243/59. Class 83 (4). An hydraulic extrusion press has its extrusion plunger 4a advanced to a preselected stroke position and then moved rapidly to perform an impact extrusion stroke by pressure from an hydraulic accumulator 10 acting on the main press piston 4, and a retraction cylinder 7, for retracting the piston and plunger, is connected permanently to the accumulator through a pipe 9 and one-way valve 6 which during the initial part of the extrusion stroke causes pressure in cylinder 7 to build up until it opens the valve 6 and thus causes rapid movement of the plunger 4a. The latter is first advanced to a distance s from the billet 1 by pressure from an air reservoir 16 admitted to piston space 8 through pipes 17, 14 and valve 18; cylinder space 7 is meanwhile connected to exhaust through valve 12. The latter is then closed and an inlet valve 15, actuated by a piston 22 controlled by a pilot valve 19, is opened to admit pressure liquid from accumu- lator 10 into cylinder 8. The resulting movement of pistons 4, 5 pressurizes the liquid trapped in cylinder 7 which is released ultimately through valve 6 whereby the plunger 4a impact-extrudes billet 1 through die 2a. The pistons are subsequently retracted by admitting pressure liquid from accumulator 10 into cylinder 7 through valve 13 and pipes 23, 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH35020A DE1101333B (en) | 1958-12-05 | 1958-12-05 | Hydraulic metal extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB935692A true GB935692A (en) | 1963-09-04 |
Family
ID=7152576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3924359A Expired GB935692A (en) | 1958-12-05 | 1959-11-19 | Hydraulic extrusion press |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1101333B (en) |
| GB (1) | GB935692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008818A1 (en) * | 2007-07-09 | 2009-01-15 | Sandvik Intellectual Property Ab | A hydraulic system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1039981B (en) * | 1951-11-29 | 1958-10-02 | Reginald Victor Rowles | Hydraulic press, especially extrusion press, for metal processing |
-
1958
- 1958-12-05 DE DEH35020A patent/DE1101333B/en active Pending
-
1959
- 1959-11-19 GB GB3924359A patent/GB935692A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008818A1 (en) * | 2007-07-09 | 2009-01-15 | Sandvik Intellectual Property Ab | A hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1101333B (en) | 1961-03-09 |
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