GB840270A - Improvements in extrusion presses - Google Patents
Improvements in extrusion pressesInfo
- Publication number
- GB840270A GB840270A GB35190/57A GB3519057A GB840270A GB 840270 A GB840270 A GB 840270A GB 35190/57 A GB35190/57 A GB 35190/57A GB 3519057 A GB3519057 A GB 3519057A GB 840270 A GB840270 A GB 840270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- bar
- head
- press
- container
- 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)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
840,270. Extruding. SCHLOEMANN A.G. Nov. 12, 1957 [Nov. 28, 1956], No. 35190/57. Class 83 (4). An extrusion press for forming hollow products has a piercing mandrel 40, a press ram 37 carried by a cross-head 20, a longitudinally displaceable billet container 4 connected rigidly with a sliding cross-bar 21 arranged behind the crosshead, and an alignment surface 21a on, or secured to, the cross-bar 21 adapted to be pressed against an alignment surface 20a on the cross-head for aligning the container with the press ram. The container 4 is mounted in a holder 14 connected by rods 17, 19 with the cross-bar 21 which is moved forwardly by plungers 24 in hydraulic cylinders 26 and is retracted by plungers 30 in hydraulic cylinders 31 which plungers act on cross-heads 29 connected by rods 27 with the cross-bar 21. Ram 37 is secured to the main press plunger 32 located in the cross-head 20 and working in a main cylinder 8. The ram is retracted by plungers 35 working in cylinders 36. Piercing mandrel 40 may be rigid with the ram or may be driven relatively thereto by a separate hydraulic motor. Before extrusion begins pressure is admitted to cylinders 36 to slightly retract the cross-head 20 and then to cylinders 26 to advance the cross-bar 21 whereby the alignment surfaces 20a, 21a are pressed together and, due to the larger area of pistons 24, both the cross-bar and cross-head are moved to the left to press the container 4 against the bolster 1 and extrusion die 3. In another embodiment, Figs. 6-12 (not shown), the cross-bar is located behind the main cylinder and is connected with the container holder by rods having shoulders forming an alignment surface which contacts the alignment surface of the cross-head. The press may be horizontal or vertical.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE840270X | 1956-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB840270A true GB840270A (en) | 1960-07-06 |
Family
ID=6762970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35190/57A Expired GB840270A (en) | 1956-11-28 | 1957-11-12 | Improvements in extrusion presses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB840270A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102626722A (en) * | 2012-04-12 | 2012-08-08 | 太原重工股份有限公司 | Pecker driving and positioning device of vertical extruder |
-
1957
- 1957-11-12 GB GB35190/57A patent/GB840270A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102626722A (en) * | 2012-04-12 | 2012-08-08 | 太原重工股份有限公司 | Pecker driving and positioning device of vertical extruder |
CN102626722B (en) * | 2012-04-12 | 2014-05-28 | 太原重工股份有限公司 | Pecker driving and positioning device of vertical extruder |
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