GB565259A - Improvements in hydraulic presses - Google Patents
Improvements in hydraulic pressesInfo
- Publication number
- GB565259A GB565259A GB1031643A GB1031643A GB565259A GB 565259 A GB565259 A GB 565259A GB 1031643 A GB1031643 A GB 1031643A GB 1031643 A GB1031643 A GB 1031643A GB 565259 A GB565259 A GB 565259A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- line
- valve
- press
- operate
- 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
- B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
- Press Drives And Press Lines (AREA)
Abstract
565,259. Hydraulic presses. MUIR, W. P. June 25, 1943, No. 10316. [Class 69 (ii)] When the working pressure in the cylinder 7 of a hydraulic press reaches a predetermined maximum value, all excess pressure fluid is by-passed through a valve 40, which opens at the above value, and passes along a line 44 to another valve 45 opening at a lower pressure whence it passes through lines 48 and 25 to the sump 26. The pressure in line 44 is thus main tained at the above lower value and may be utilized to operate the main valve 12 controlling the working and return movements of the press. In the form shown it does this by tripping a toggle 38 and so allowing the valve piston 15 to move to the right under the action of a spring 35 and an adjustable choke 62 gives a time delay before tripping so permitting the press to dwell on the work for a desired period. The pressure in line 44 may also operate through a line 70 to adjust the stroke of the pump 10 thus reducing the volume of pump discharge. In a modification, Fig. 2 (not shown) the valve 12 is operated by a pneumatic relay controlled by the pressure in line 44 and also by hand-operated push valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1031643A GB565259A (en) | 1943-06-25 | 1943-06-25 | Improvements in hydraulic presses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1031643A GB565259A (en) | 1943-06-25 | 1943-06-25 | Improvements in hydraulic presses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB565259A true GB565259A (en) | 1944-11-02 |
Family
ID=9965625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1031643A Expired GB565259A (en) | 1943-06-25 | 1943-06-25 | Improvements in hydraulic presses |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB565259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721286A (en) * | 2020-12-28 | 2021-04-30 | 济南卓成机电科技有限公司 | Quasi-constant pressure pressurizing system of vibration forming machine |
-
1943
- 1943-06-25 GB GB1031643A patent/GB565259A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721286A (en) * | 2020-12-28 | 2021-04-30 | 济南卓成机电科技有限公司 | Quasi-constant pressure pressurizing system of vibration forming machine |
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