EP0122205A1 - Präzisions-Hydrauliksteuerung, insbesondere für Formpressen - Google Patents

Präzisions-Hydrauliksteuerung, insbesondere für Formpressen Download PDF

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Publication number
EP0122205A1
EP0122205A1 EP84420037A EP84420037A EP0122205A1 EP 0122205 A1 EP0122205 A1 EP 0122205A1 EP 84420037 A EP84420037 A EP 84420037A EP 84420037 A EP84420037 A EP 84420037A EP 0122205 A1 EP0122205 A1 EP 0122205A1
Authority
EP
European Patent Office
Prior art keywords
distributor
jack
valve
controlled
hand
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.)
Granted
Application number
EP84420037A
Other languages
English (en)
French (fr)
Other versions
EP0122205B1 (de
Inventor
Pierre Poncet
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9286626&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0122205(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT84420037T priority Critical patent/ATE24028T1/de
Publication of EP0122205A1 publication Critical patent/EP0122205A1/de
Application granted granted Critical
Publication of EP0122205B1 publication Critical patent/EP0122205B1/de
Expired legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
    • 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
    • B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
    • B30B15/245—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam using auxiliary cylinder and piston means as actuating members

Definitions

  • the present invention relates to a hydraulic distributor device, in particular intended for the control of molding presses, and which, while ensuring a high flow rate of hydraulic liquid, allows rapid shutdown of the actuated cylinder, at a position which corresponds to extremely precisely as desired.
  • the invention aims to avoid the above drawback.
  • a hydraulic distributor device comprises, in addition to a sliding drawer distributor, or main distributor, and in combination with this, a mechanical or electrical position detector of the drawer and an auxiliary distribution system controlled by said detector, this system selectively sending into the actuated cylinder a flow of oil, or other hydraulic fluid, very low compared to that which it receives at the fully open position of the distributor main, so as to bring it back to a predetermined position, or neutral position, located precisely inside the aforementioned dead zone.
  • the press shown in fig. 1 comprises in the conventional way a base 1 on which are mounted four vertical columns 2 which support a fixed upper plate 3 and on which slides a movable plate 4, the movement of the latter being ensured by four clamping cylinders 5 whose cylinders are fixed to the base 1, their rods 6 being subject to said plate 4.
  • the opposite faces of the movable plate 4 and the fixed plate 3 carry one and the other half of the mold, respectively 7a and -b.
  • the movable plate 4 In the vicinity of each of the clamping cylinders, the movable plate 4 carries a small motor or rotating device 8 to vertical axis which drives a screw 9, which is associated by way of nut with the movable drawer 10 of the distributor 11 for controlling the adjacent jack 5, this drawer being prevented from turning on itself by suitable means, such as a sliding key interposed between it and the distributor body in a part of these two members having no grooves or pipes.
  • the distributors 11 are fixed to the base 1.
  • the four devices 8 are arranged so as to always rotate in a strictly synchronous manner. They can also be produced for this purpose in the form of simple toothed wheels engaged with a toothed belt or chain suitably driven by a single electric motor.
  • these distributors have been produced in multiple form, that is to say ie by means of several elementary distributors mounted in parallel inside the same body with a single drawer comprising a corresponding number of grooves.
  • This feeler controls a mechanism 19, which in turn actuates an auxiliary distribution system 20 connected on the one hand to the outlet of the pump 13 by a pipe 21 and on the other hand to both of the chambers 5a and 5b of the jack 5 by two other lines 22 and 23.
  • This auxiliary system 20 thus selectively sends into the aforementioned chambers a very slight flow of liquid which compensates for the possible inequality of the leaks in the theoretical neutral position.
  • the feeler 18 may be mechanical, the mechanism 19 comprising electrical means and the auxiliary system 20 being constituted by two valves of very small section which the aforementioned means actuate electromagnetically. It is advantageous to program the operation of closing the mold so that the feeler 18 intervenes only during the final phase thereof.
  • a separate nut 24 has been provided fixed to the movable plate 4 of the press by means of a stirrup or the like 25.
  • the screw 9 has a smooth extension 9a which crosses the slide 10 and on which the latter is retained axially by rings 26. This smooth part extends below the slide 10 to result in a sliding mechanical seal 27 which angularly connects it to the motor 8, here carried by the base 1, while allowing it to move vertically.
  • the jack 5 is of the rod type 28 of large diameter in order to reduce the useful section of the upper chamber 5a, which is permanently connected to the pump 13.
  • the multiple distributor 11 then only has to put the chamber lower 5b in communication either with the pressure pipe 12, or with that 16 of return to the cover 17. The operation remains otherwise the same as that described above.
  • dispenser device has been described above in its application to molding presses, it is understood that it is possible to use it whenever a cylinder has to be controlled precisely under a relatively large flow of hydraulic fluid by stopping it at a very exactly predetermined position.
EP84420037A 1983-03-04 1984-03-05 Präzisions-Hydrauliksteuerung, insbesondere für Formpressen Expired EP0122205B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84420037T ATE24028T1 (de) 1983-03-04 1984-03-05 Praezisions-hydrauliksteuerung, insbesondere fuer formpressen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8303803A FR2541934B1 (fr) 1983-03-04 1983-03-04 Dispositif de reglage du parallelisme et de la planeite des plateaux dans les presses a mouler
FR8303803 1983-03-04

Publications (2)

Publication Number Publication Date
EP0122205A1 true EP0122205A1 (de) 1984-10-17
EP0122205B1 EP0122205B1 (de) 1986-12-03

Family

ID=9286626

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84420038A Ceased EP0121484A1 (de) 1983-03-04 1984-03-05 Säulenpresse mit Ausgleich für Längenänderungen der Säulen beim Pressen
EP84420037A Expired EP0122205B1 (de) 1983-03-04 1984-03-05 Präzisions-Hydrauliksteuerung, insbesondere für Formpressen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84420038A Ceased EP0121484A1 (de) 1983-03-04 1984-03-05 Säulenpresse mit Ausgleich für Längenänderungen der Säulen beim Pressen

Country Status (4)

Country Link
EP (2) EP0121484A1 (de)
AT (1) ATE24028T1 (de)
DE (1) DE3461553D1 (de)
FR (1) FR2541934B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510720B1 (en) * 2001-10-18 2003-01-28 Hartwick Professionals, Inc. Hydraulic pressure forming using a self aligning and activating die system
CN105327974B (zh) * 2015-12-01 2019-03-15 盐城工学院 冲压模模次计数和平行度检测装置及其平行度检测方法
CN106427039A (zh) * 2016-11-30 2017-02-22 无锡市创恒机械有限公司 工件均匀加压装置
CN115206036B (zh) * 2022-09-13 2022-12-06 江苏振华新云电子有限公司 一种模压机工作时检测框条整平报警装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1122619A (fr) * 1955-02-25 1956-09-11 Servo-moteur à accumulation
DE1007627B (de) * 1953-11-30 1957-05-02 Merklinger Maschinenfabrik G M Steuerventil mit Kolbenschieber fuer hydraulische Pressen
US3064426A (en) * 1959-06-22 1962-11-20 Dba Sa Hydraulic systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1703297A1 (de) * 1968-04-29 1972-02-17 Freudenberg Carl Fa Heizplattenpresse mit selbstkompensierenden Zylinderkolbenanordnungen
DE2245049A1 (de) * 1972-09-14 1974-03-21 Siempelkamp Gmbh & Co Hydraulische presse
FR2204490B1 (de) * 1972-10-27 1976-10-29 Poncet Pierre
DE2431585A1 (de) * 1974-07-01 1976-01-22 4 P Verpackungen Gmbh Ausgleichsvorrichtung fuer laengenaenderungen bei arbeitsmaschinen mit zuganker
FR2345247A1 (fr) * 1976-03-24 1977-10-21 Pahnke Engineering Presse de forge libre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007627B (de) * 1953-11-30 1957-05-02 Merklinger Maschinenfabrik G M Steuerventil mit Kolbenschieber fuer hydraulische Pressen
FR1122619A (fr) * 1955-02-25 1956-09-11 Servo-moteur à accumulation
US3064426A (en) * 1959-06-22 1962-11-20 Dba Sa Hydraulic systems

Also Published As

Publication number Publication date
ATE24028T1 (de) 1986-12-15
EP0121484A1 (de) 1984-10-10
DE3461553D1 (en) 1987-01-15
FR2541934B1 (fr) 1986-10-17
EP0122205B1 (de) 1986-12-03
FR2541934A1 (fr) 1984-09-07

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