US3818825A - Double-acting, casing frame hydraulic press - Google Patents

Double-acting, casing frame hydraulic press Download PDF

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Publication number
US3818825A
US3818825A US00280866A US28086672A US3818825A US 3818825 A US3818825 A US 3818825A US 00280866 A US00280866 A US 00280866A US 28086672 A US28086672 A US 28086672A US 3818825 A US3818825 A US 3818825A
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US
United States
Prior art keywords
platen
press
double
cylinder
hydraulic press
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 - Lifetime
Application number
US00280866A
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English (en)
Inventor
E Nowak
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.)
PRZED DOSWIADCZALNE PRAS AUTOM
PRZEDSIEBIORSTWO DOSWIADCZALNE PRAS AUTOMATYCZNYCH PO
Original Assignee
PRZED DOSWIADCZALNE PRAS AUTOM
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 PRZED DOSWIADCZALNE PRAS AUTOM filed Critical PRZED DOSWIADCZALNE PRAS AUTOM
Application granted granted Critical
Publication of US3818825A publication Critical patent/US3818825A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B30B15/04—Frames; Guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure

Definitions

  • the subject of the present invention is a double-acting hydraulic press built with a monolithic frame of a casing type. Fixed slidably within the frame are four columns on which the press platen is rigidly mounted.
  • the subject of the present invention is a doubleacting, casing frame hydraulic press equipped with a system of plungers located in the bottom and top part of the frame, and with a movable platen fixed on sliding columns.
  • the known double-acting hydraulic presses can be classified, according to their construction, as the presses of a column-type carrying unit.
  • the hydraulic presses of this type are equipped with a single-acting power transmission system, usually with a bottom system. Also known are the constructions of double-acting hydraulic presses with a top and a bottom power transmission system, the strokes in such case of a top and a bottom platen following, during the operation cycle, one after the other, thus reducing the frequency of press operation.
  • An extremely important problem with double-acting hydraulic presses is a suitably high rigidity of the system transmitting the power from the power cylinders and pistons to the platen, and therefore of a suitably high rigidity of the whole press structure.
  • the invented press includes a frame which forms a monolithic casing structure with power cylinders, top and bottom power cylinders together with plungers, mounted on the frame, said plungers operating jointly with top and bottom plates fixed on elastic bars screwed into the columns.
  • Bolted to the power cylinders are the top and bottom ring gears, these ring gears operating jointly with the said top and bottom plates and being coupled with worm screws, while between the bottoms of cylinders and plungers the springs are provided.
  • the platen in the invented press is rigidly fixed on the column.
  • the basic noteworthy feature of a monolithic casing frame is its exceptionally high structural strength allowing to cope with high bending-torsion stresses.
  • the ring gears bolted to thecylinders provide for the adjustment, by turning of the worm screws, of the stroke of the platen movable in both directions, as well as allow, in case of tool failure, to charge the platen position and to increase the tool clearance in the top or bottom working zone of the press and to rectify thedefect without the necessity of dismantling the tool from the press.
  • the springs located between the cylinder bottom and theplunger prevent dropping of the press at idle periods, keeping it in a middle position.
  • a press frame 1 forms a monolithic structure of a casing type.
  • the platen is rig in these elements and their displacement resulting in a premature wear of the whole press.
  • the purpose of the present invention is to obviate the above-mentioned shortcoming and imperfections by developing a double-acting hydraulic press characterized by the highest possible rigidity of the press frame, this press being equipped with a combined top and bottom power system, and not requiring a complex and top cylinder plunger 9, said plungers operating jointly with a bottom plate 11 and a top plate 17.
  • Plates 11 and 17 are mounted, by means of nuts 12, on elastic bars 14 and 16, said bars being screwed into columns 2.
  • Bolted to the cylinders 5 and 8 are ring gears: a bottom ring gear 7 and a top ring gear 10, these rings meshing with worm screws 13 operate jointly with plates 11 and 17.
  • the base of the press is indicated by broken lines.
  • the invented press operates as follows:
  • a hydraulic distributor (not shown in the drawing) directs the oil first to the bottom cylinder 5 and beneath the working face of the plunger, thus causing the plunger 6 of bottom cylinder to move downwardly, and a bottom spring 15 to expand. ln consequence of this movement the system consisting of bottom plate 11, elastic bars 14 and 16, columns 2, and platen 3 moves also downwardly until the forming operation takes place in the press bottom working zone. At the same time the top plate 17 presses against the top plunger 9 thus causing a downward motion of this plunger and a discharge of oil from the top cylinder 8, while the top a spring 15 becomes compressed. Following this, the distributor begins to direct the oil to the top cylinder and beneath the working face of the top cylinder plunger, this plunger beginning thus its upward motion. In consequence of this motion the system consisting of top plate 17, elastic bars 16, columns 2, and platen 3 begins to move upward until the forming operation takes place in the press top working zone.
  • a double-acting hydraulic press comprising, in combination:
  • a monolithic frame having two spaced-apart rigid structural members, each of said members having an inwardly facing surface and an outwardly facing surface, each of said inwardly facing surfaces constituting respective working surfaces of the press;
  • a platen positioned between said structural members; said platen having respective working surfaces facing toward said inwardly facing surfaces;
  • said platen may be moved alternatingly toward respective ones of said inwardly facing surfaces of said structural members which, with said working surfaces of said platen, define first and second working stations of the press.
  • a double-acting hydraulic press as claimed in claim I wherein said first power system includes a bottom cylinder and a bottom plunger and said second power system includes a top cylinder and a top plunger; and further comprising a bottom plate and a top plate, these plates being positioned outside of said frame and being mounted on respective elastic bars; and wherein said means coupling said platen to each of said power systems include respective columns connected between said platen and said elastic bars.
  • a double-acting hydraulic press as claimed in claim 2 further including a bottom ring gear bolted to said bottom cylinder and a top ring gear bolted to said top cylinder and respective drive means meshed with said ring gears.
  • a double-acting hydraulic press as claimed in claim 2 further including a first spring means positioned between said bottom plunger and the bottom of said bottom cylinder, and a second spring means positioned between said top plunger and the bottom of said top cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
US00280866A 1971-08-16 1972-08-15 Double-acting, casing frame hydraulic press Expired - Lifetime US3818825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15004471A PL71540B1 (de) 1971-08-16 1971-08-16

Publications (1)

Publication Number Publication Date
US3818825A true US3818825A (en) 1974-06-25

Family

ID=19955380

Family Applications (1)

Application Number Title Priority Date Filing Date
US00280866A Expired - Lifetime US3818825A (en) 1971-08-16 1972-08-15 Double-acting, casing frame hydraulic press

Country Status (10)

Country Link
US (1) US3818825A (de)
JP (1) JPS5310311B2 (de)
CH (1) CH544651A (de)
DD (1) DD98058A5 (de)
DE (1) DE2240267A1 (de)
FR (1) FR2150139A5 (de)
GB (1) GB1396741A (de)
IT (1) IT970832B (de)
PL (1) PL71540B1 (de)
SU (1) SU484669A3 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203359A (en) * 1977-09-01 1980-05-20 Smg Suddeutsche Maschinenbau-Gesellschaft Mbh Hydraulically driven press
GB2363356A (en) * 2000-06-01 2001-12-19 Marc Gibson Collinson An arrangement for a double acting press
WO2003045677A1 (en) * 2001-11-20 2003-06-05 Marc Gibson-Collinson An arrangement for a double-acting press
US20060180035A1 (en) * 2005-02-14 2006-08-17 Uhlmann Pac-Systeme Gmbh & Co. Kg Press with vertically reciprocated frame
US20070186588A1 (en) * 2006-02-15 2007-08-16 Uhlmann Pac-Systeme Gmbh & Co. Kg Foil-shaping press
CN101817240A (zh) * 2010-03-09 2010-09-01 宁波澳玛特高精冲压机床股份有限公司 分段式冲床机架
CN102267241A (zh) * 2011-07-27 2011-12-07 江苏国力锻压机床有限公司 双动液压机的合并装置
CN104148531A (zh) * 2013-05-15 2014-11-19 宜兴市联丰化工机械有限公司 一种封头液压机
CN114130876A (zh) * 2021-11-04 2022-03-04 襄阳振辉机电技术有限公司 一种能够加工薄板的两工位定向折边机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5442084A (en) * 1977-09-09 1979-04-03 Iwatani & Co Reciprocating molding press
CN102582101B (zh) * 2012-02-17 2014-12-17 天津市天锻压力机有限公司 四柱锻造液压机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773441A (en) * 1899-03-20 1904-10-25 Samuel J Webb Press.
US1721421A (en) * 1926-02-27 1929-07-16 William B Updegraff Fluid-pressure press
GB411413A (en) * 1934-03-16 1934-06-07 Maurice Michael Eaton Improvement in hydraulic presses
US2288356A (en) * 1939-04-15 1942-06-30 Walter E Humphrey Press for vulcanizing play balls and similar articles
US3115089A (en) * 1962-09-24 1963-12-24 Baldwin Lima Hamilton Corp Tandem hydraulic press
US3507143A (en) * 1967-08-01 1970-04-21 Otto Georg Forming machine
US3596499A (en) * 1967-10-16 1971-08-03 Langenstein & Schemann Ag Machine for pressure forming and impact forming workpieces

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773441A (en) * 1899-03-20 1904-10-25 Samuel J Webb Press.
US1721421A (en) * 1926-02-27 1929-07-16 William B Updegraff Fluid-pressure press
GB411413A (en) * 1934-03-16 1934-06-07 Maurice Michael Eaton Improvement in hydraulic presses
US2288356A (en) * 1939-04-15 1942-06-30 Walter E Humphrey Press for vulcanizing play balls and similar articles
US3115089A (en) * 1962-09-24 1963-12-24 Baldwin Lima Hamilton Corp Tandem hydraulic press
US3507143A (en) * 1967-08-01 1970-04-21 Otto Georg Forming machine
US3596499A (en) * 1967-10-16 1971-08-03 Langenstein & Schemann Ag Machine for pressure forming and impact forming workpieces

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203359A (en) * 1977-09-01 1980-05-20 Smg Suddeutsche Maschinenbau-Gesellschaft Mbh Hydraulically driven press
GB2363356A (en) * 2000-06-01 2001-12-19 Marc Gibson Collinson An arrangement for a double acting press
GB2363356B (en) * 2000-06-01 2002-07-10 Marc Gibson Collinson An arrangement for a double acting press
WO2003045677A1 (en) * 2001-11-20 2003-06-05 Marc Gibson-Collinson An arrangement for a double-acting press
US20050000265A1 (en) * 2001-11-20 2005-01-06 Marc Gibson Collinson Arrangement for a double-activing press
US7331281B2 (en) * 2005-02-14 2008-02-19 Uhlmann Pac-Systeme Gmbh & Co. Kg Press with vertically reciprocated frame
US20060180035A1 (en) * 2005-02-14 2006-08-17 Uhlmann Pac-Systeme Gmbh & Co. Kg Press with vertically reciprocated frame
US20070186588A1 (en) * 2006-02-15 2007-08-16 Uhlmann Pac-Systeme Gmbh & Co. Kg Foil-shaping press
CN101817240A (zh) * 2010-03-09 2010-09-01 宁波澳玛特高精冲压机床股份有限公司 分段式冲床机架
CN101817240B (zh) * 2010-03-09 2012-04-18 宁波澳玛特高精冲压机床股份有限公司 分段式冲床机架
CN102267241A (zh) * 2011-07-27 2011-12-07 江苏国力锻压机床有限公司 双动液压机的合并装置
CN104148531A (zh) * 2013-05-15 2014-11-19 宜兴市联丰化工机械有限公司 一种封头液压机
CN114130876A (zh) * 2021-11-04 2022-03-04 襄阳振辉机电技术有限公司 一种能够加工薄板的两工位定向折边机

Also Published As

Publication number Publication date
SU484669A3 (ru) 1975-09-15
IT970832B (it) 1974-04-20
DD98058A5 (de) 1973-06-05
DE2240267A1 (de) 1973-02-22
CH544651A (de) 1973-11-30
JPS5310311B2 (de) 1978-04-12
GB1396741A (en) 1975-06-04
PL71540B1 (de) 1974-06-29
FR2150139A5 (de) 1973-03-30
JPS4829076A (de) 1973-04-17

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