GB1246331A - Stroke control for ram type machine - Google Patents

Stroke control for ram type machine

Info

Publication number
GB1246331A
GB1246331A GB51959/68A GB5195968A GB1246331A GB 1246331 A GB1246331 A GB 1246331A GB 51959/68 A GB51959/68 A GB 51959/68A GB 5195968 A GB5195968 A GB 5195968A GB 1246331 A GB1246331 A GB 1246331A
Authority
GB
United Kingdom
Prior art keywords
ram
press
stroke
work stroke
hydraulic
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
Application number
GB51959/68A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pacific Press and Shear Corp
Original Assignee
Pacific Press and Shear Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pacific Press and Shear Corp filed Critical Pacific Press and Shear Corp
Publication of GB1246331A publication Critical patent/GB1246331A/en
Expired legal-status Critical Current

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
    • B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
    • B30B15/20—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram controlling the speed of the ram, e.g. the speed of the approach, pressing or return strokes
    • 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
    • B30B15/166—Electrical control arrangements
    • 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
    • B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram

Abstract

1,246,331. Hydraulic presses. PACIFIC PRESS & SHEAR CORP. 1 Nov., 1968 [10 April, 1968], No. 51959/68. Heading B5F. [Also in Division B3] An hydraulic press, e.g. a press brake is provided with means for determining the end of the work stroke of a press ram 1, and timing means responsive to the arrival of the press ram 1 at the end of its work stroke for determining the extent of the return stroke of the ram. Means are also provided for adjustably dividing the work stroke into a fast initial portion and a slow final portion. The timing means and dividing means include adjustable rheostats (197, 199), Fig. 3 (not shown), these rheostats being adjustable simultaneously or independent of each other. As shown in Fig. 1, the ram 1 is reciprocated by two hydraulic motors 3, 5 supplied by pumps 11, 13. For the fast approach stroke fluid from the underside of the pistons 9 supplements the supply from the pumps 11, 13 to the upper parts of the cylinders 7. At a point in the work stroke determined by a timer (169) solenoid windings 89 are de-energized and cause valve assemblies 85 to open and connect lines 19 to a tank. Rapid advance of the ram 1 is thus converted to normal speed since liquid from the undersides of the pistons 9 is no longer supplied to the motors 3, 5.
GB51959/68A 1968-04-10 1968-11-01 Stroke control for ram type machine Expired GB1246331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72005368A 1968-04-10 1968-04-10

Publications (1)

Publication Number Publication Date
GB1246331A true GB1246331A (en) 1971-09-15

Family

ID=24892448

Family Applications (2)

Application Number Title Priority Date Filing Date
GB01420/70A Expired GB1246332A (en) 1968-04-10 1968-11-01 Stroke control for ram type machine
GB51959/68A Expired GB1246331A (en) 1968-04-10 1968-11-01 Stroke control for ram type machine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB01420/70A Expired GB1246332A (en) 1968-04-10 1968-11-01 Stroke control for ram type machine

Country Status (4)

Country Link
US (1) US3524384A (en)
JP (1) JPS564763B1 (en)
BE (1) BE723395A (en)
GB (2) GB1246332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139931A (en) * 1980-05-26 1984-11-21 Amada Co Ltd Hydraulic presses

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153275A (en) * 1984-01-31 1985-08-21 Blackspur Engineering Limited Compaction of spent nuclear fuel cans
JPS611918A (en) * 1984-06-13 1986-01-07 Matsushita Electric Ind Co Ltd Control device of combustion tool
JPS611920A (en) * 1984-06-13 1986-01-07 Matsushita Electric Ind Co Ltd Control device of combustion apparatus
JPS6153670U (en) * 1984-09-12 1986-04-11
JPS6224268U (en) * 1985-07-25 1987-02-14
JPS62172110A (en) * 1986-01-24 1987-07-29 Matsushita Electric Ind Co Ltd Control device for warm air type heater
CN107605870A (en) * 2017-10-20 2018-01-19 江苏高德液压机械有限公司 Box cutter with ladder compression material-pulling device
CN110482084B (en) * 2019-08-20 2021-11-19 长沙中联重科环境产业有限公司 Garbage compactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139931A (en) * 1980-05-26 1984-11-21 Amada Co Ltd Hydraulic presses

Also Published As

Publication number Publication date
US3524384A (en) 1970-08-18
GB1246332A (en) 1971-09-15
BE723395A (en) 1969-04-16
JPS564763B1 (en) 1981-01-31

Similar Documents

Publication Publication Date Title
ES389115A1 (en) Control arrangement with a pulse-length modulator for a piston
GB1273991A (en) Printing press
GB1280806A (en) Method and apparatus for actuating a sub-surface reciprocating well pump
GB1246331A (en) Stroke control for ram type machine
FR2086484A1 (en) Multi plunger speed pressure die casting plant
GB1329401A (en) Hydraulic ram machine
GB935046A (en) Improvements relating to continuous casting
GB1091679A (en) Improvements in devices for varying the beginning of delivery in fuel injection pumps
GB1467706A (en) Control system for a variable pump or motor
GB1314160A (en) Method and apparatus for clamping mould parts together
GB1236515A (en) Pneumatic press
GB884933A (en) Hydraulic control of tools or other moving parts in automatic rotary machines
GB1109790A (en) Improvements in or relating to beaming machines
GB964000A (en) Adjustable swash-plate,high-pressure pump for oil emulsion
US2644310A (en) Plural motor hydraulic device for controlling the movements in machines and apparatus for washing, filling, stoppering, capsuling, and labeling bottles
GB1371390A (en) Hydraulic press
GB1234978A (en) Hydraulic presses for pressing artificial stone
ES423944A1 (en) Device for controlling the reciprocation of a working piston
Clinton Beam Synchronisation of Press Brakes
DK127959B (en) Method for controlling the connection of the multiplier to the press piston in a multiplier pressure molding machine and control system for carrying out the method.
GB1187792A (en) Improvements in or relating to Die-Casting Machines
FR2105239A1 (en) Deep-drawing press - control of the stroke of the bearing
GB1436338A (en) Injection moulding machines
GB1226413A (en)
GB870779A (en) Improvements relating to control means for hydraulic presses