GB623401A - Improvements in and relating to hydraulic presses - Google Patents
Improvements in and relating to hydraulic pressesInfo
- Publication number
- GB623401A GB623401A GB1967446A GB1967446A GB623401A GB 623401 A GB623401 A GB 623401A GB 1967446 A GB1967446 A GB 1967446A GB 1967446 A GB1967446 A GB 1967446A GB 623401 A GB623401 A GB 623401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- switch
- pressure fluid
- ram
- operated
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Presses (AREA)
Abstract
623,401. Hydraulic presses. ERNST, W. July 1, 1946, No. 19674. [Class 69 (ii)] Fluid flow to a hydraulic press ram is controlled by a valve 19, the position of which is adjusted by fluid pressure through the solenoidactuated valves 40, 47, 49 and 54, these being operated from an electric circuit. When the starting switch 73 is operated, solenoid 72 moves valve 40, pressure fluid from pipes 55, 38 moving valve 19 so that liquid below the piston 2 escapes to exhaust whilst the piston descends by gravity. When switch 115a is contacted, valve 47 is actuated to move valvo 19 so that pressure fluid is supplied above the piston 2. Pressure fluid supply is stopped either when the total load exceeds a limit, or the switch 119 is operated by the cam 92. In either case valve 54 is' actuated to shift the control valve 19, supplying pressure fluid for retraction. Press movement can be stopped at any point in the stroke by the switch 131, and reverse movement can be initiated at any time by switch 122. If leakage occurs with the ram in its retracted position, allowing ram to descend, switch 91 reverses valve 47 and supplies a small quantity of pressure fluid through lines 55, 57, 48, 43 and 66 to lift ram to original position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1967446A GB623401A (en) | 1946-07-01 | 1946-07-01 | Improvements in and relating to hydraulic presses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1967446A GB623401A (en) | 1946-07-01 | 1946-07-01 | Improvements in and relating to hydraulic presses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB623401A true GB623401A (en) | 1949-05-17 |
Family
ID=10133299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1967446A Expired GB623401A (en) | 1946-07-01 | 1946-07-01 | Improvements in and relating to hydraulic presses |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB623401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2854919A (en) * | 1955-02-28 | 1958-10-07 | Ckd Ceska Lipa Narodni Podnik | Hydraulic press |
-
1946
- 1946-07-01 GB GB1967446A patent/GB623401A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2854919A (en) * | 1955-02-28 | 1958-10-07 | Ckd Ceska Lipa Narodni Podnik | Hydraulic press |
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