US3643592A - Press - Google Patents

Press Download PDF

Info

Publication number
US3643592A
US3643592A US21663A US3643592DA US3643592A US 3643592 A US3643592 A US 3643592A US 21663 A US21663 A US 21663A US 3643592D A US3643592D A US 3643592DA US 3643592 A US3643592 A US 3643592A
Authority
US
United States
Prior art keywords
press
members
preloaded
hollow column
tensioning cables
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
US21663A
Other languages
English (en)
Inventor
Harry Blaser
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.)
Von Roll AG
Original Assignee
Von Roll AG
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 Von Roll AG filed Critical Von Roll AG
Application granted granted Critical
Publication of US3643592A publication Critical patent/US3643592A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B30B15/042—Prestressed frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49874—Prestressing rod, filament or strand

Definitions

  • ABSTRACT [30] Foreign Application Priority Data A press compnslng a press frame formed of a lower yoke and Mar. 24, 1969 Switzerland ..4395/69 an upper yoke and intermediate members for interconnecting said lower yoke with said upper yoke. Further, a plurality of [52] U.S. Cl ..100/2l4, 29/452 preloaded tensioning cables, apart from the aforementioned [51] 1nt.C1 ..B30b 15/28 intermediate members, serve to hold together both of said [58] Field ofSearch Vietnamese ....72/455,456; 100/214; 29/404, Y
  • the present invention relates to a new and improved press which is of the type containing a lower yoke or crossbar and an upper yoke or crossbar which are interconnected with one another by intermediate members, and wherein these components form the press frame unit.
  • the intermediate members consist of massive columns, and the yoke members or crossbars are secured to such columns with the aid of threaded nut members.
  • the intermediate members are frame components which are connected with the yokes in suitable fashion.
  • press frame which is especially used in deep drawing presses and plastic presses, wherein, the components interconnecting the yokes or crossbars are preloaded.
  • intermediate members apart from the components which take up the tension forces, such as for instance the columns, there are arranged intermediate members against which the yokes bear during pretensioning and which tend to compress together such intermediate members.
  • Another, and more specific object of the present invention relates to the provision of an improved press having a press frame, the components of which are smaller than those of the known presses and which can be mounted and pretensioned or preloaded in a much more simple way.
  • the inventive press is manifested by the features that apart from the intermediate members there are provided a plurality of preloaded tensioning cables which hold together both yokes or crossbars.
  • FIG. 1 is a simplified schematic representation of a preferred embodiment of press frame of a press, partially shown in sectional view;
  • FIG. 2 is a cross-sectional view, on an enlarged scale, of the press construction shown in FIG. 1, taken substantially along the line
  • FIG. 3 is a graph which illustrates the load conditions as a function of elongation for a known construction of press and for the inventive construction.
  • FIG. 4 is a horizontal fragmentary sectional view through a column member of the press depicting the guide means for the movable press punch.
  • FIG. 1 there is depicted an exemplary embodiment of inventive press which will be seen to comprise the upper yoke or crossbar l and the lower yoke or crossbar 2, such press representing, for instance, a hydraulic press.
  • a fixed press punch 4 At the upper yoke member 1 there is arranged a fixed press punch 4, whereas the movable press punch 3 is secured to a nonvisible press piston which is arranged in the press cylinder 5 mounted at the lower yoke or crossbar 2.
  • hollow column members 6 are arranged between both of the yoke or crossbar members 1 and 2. The respective ends of these hollow column members 6 are guided in recessed portions 7 and 8 of the yokes 2 and 1, respectively.
  • a number of tensioning cables 9 which extend through openings 11 and 12 provided at the yokes 2 and 1, respectively. The diameter of these openings 11 and 12 substantially corresponds to that of the inner compartment 10 of the hollow column members 6.
  • tensioning cables 9 are retained in tensioning plate members 13 and 14 which are arranged at the outside of the yoke members or crossbars 1 and 2 respectively.
  • These tensioning plate members 13 and 14 are equipped with a number of at least partially conical bores 15one such bore for each tensioning cable 9which serve for receiving nonillustrated tensioning sleeve members by means of which the preloaded cables 9 can be retained in their preloaded position.
  • the ends of the tensioning cables 9 extend past the tensioning plate members 13 and 14 in order that they can be engaged for the purpose of preloading or pretensioning them.
  • the tensioning cables 9 are advantageously individually drawn in through the column members. After all of these cables 9 are drawn through the hollow column members 6, then these cables are preloaded or tensioned in succession until there is attained the predesired preloading value.
  • This technique is especially useful during the assembly of large presses with very strong pretensioning cables, since to preload or tension an individual tensioning cable the tensioning mechanism which is used can be dimensioned to be much smaller than if all of the tensioning cables had to be simultaneously preloaded or tensioned collectively.
  • the simultaneous preloading of the tensioning cables comes under consideration for smaller presses and also for hydraulic presses of optional size.
  • the press cylinder for carrying out the preloading or tensioning operation, in that the press piston presses against the oppositely situated yoke or crossbar member.
  • a gap appears between the yoke and the intermediate members into which suitable insert members can be placed which retain the preloading after relieving the press cylinder.
  • the embodiment of inventive press utilizing preloading or tensioning cables is more economical and simpler to assemble since the heavy columns are dispensed with. This also results in noteworthy advantages with respect to transportation costs. Furthermore, the preloading operation is simpler and can be carried out with much smaller preloading devices since in each instance only a single cable is tensioned.
  • FIG. 3 graphically illustrates the advantages of an inventive press which has been preloaded with preloading or tensioning cables in contrast to a prior art column construction of press.
  • FIG. 3 graphically illustrates the advantages of an inventive press which has been preloaded with preloading or tensioning cables in contrast to a prior art column construction of press.
  • a prior art column construction press and under the graph portion (b) an embodiment of inventive press utilizing preloading or tensioning cables.
  • the load or load reaction and along the abscissa the changes in length of'the corresponding components, and wherein:
  • press force P represents the load of the preloading cable during change of the press force from O to P V represents the preloading force 7 V,,,,,, represents the smallest preloading force.
  • a further advantage of the embodiment of inventive press having preloaded cables resides in the fact that also if there is any relaxation, for instance due to settling of the material, the preloading only slightly changes, whereas with the column construction-type press of the prior art with their small elongation the danger exists that the preloading will be considerably reduced or even, in fact, completely nullified, so that the alternating load is likewise intensively increased.
  • the described press of the invention therefore combines certain noteworthy advantages in contrast to the known constructions, it is more economical and easier to assemble, easier to transport, easier to 'preload and can be preloaded to a greater value, and furthermore, exhibits a smaller alternating load which is required for a reduced danger of rupture than the constructions in which the press frame is not preloaded by means of tensioning or preloading cables.
  • the intermediate members namely the hollow columns 6, can be provided with guide means 20, by means of which the partially illustrated movable press punch 21 can be guided along its strokes.
  • the movable press punch 21 possesses a number of arm members 22, the sliding surfaces 23 of which can slide along the sliding surface 24 of the associated guide means 20. ln this manner, there is achieved a reliable guiding of the movable press punch 21 notwithstanding the use oftensioning cables.
  • a press comprising a press frame formed ofa lower yoke and an upper yoke and intermediate members for interconnecting said lower yoke with said upper yoke, each intermediate member being defined by a hollow column member having an internal compartment, and a plurality of preloaded tensioning cables arranged in said internal compartments of said hollow column members and which, apart from said intermediate members, hold together both of said yokes.
  • each yoke member is equipped with a throughpassage opening which substantially corresponds in diameter to that of said internal compartment of said hollow column members and throu h which the tensioning cables are passed, and tensioning p ate members arranged at the outside of said yokes for retaining said tensioning cables.
  • a press as defined in claim 1 further including a movable press punch mounted at said press frame, guide means arranged at said hollow column members and serving to guide said movable press punch of the press.
  • each of said plurality of preloaded tensioning cables can be separately preloaded and independently of the other tensioning cables.
  • a press comprising a press frame formed ofa lower yoke and an upper yoke, intermediate members for interconnecting said lower yoke and said up er yoke, each intermediate member comprising a hollow column member having an internal compartment extending between opposed ends of each associated hollow column member, and a plurality of preloaded tensioning cables arranged in the internal compartment of at least one of said hollow column members, said preloaded tensioning cables being in a form of separate cable members of finite length which extend in spaced relationship from one another between said opposed ends of said at least one hollow column member, said preloaded tensioning cables serving to hold together both of said yokes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)
US21663A 1969-03-24 1970-03-23 Press Expired - Lifetime US3643592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH439569A CH504961A (de) 1969-03-24 1969-03-24 Presse

Publications (1)

Publication Number Publication Date
US3643592A true US3643592A (en) 1972-02-22

Family

ID=4275316

Family Applications (1)

Application Number Title Priority Date Filing Date
US21663A Expired - Lifetime US3643592A (en) 1969-03-24 1970-03-23 Press

Country Status (7)

Country Link
US (1) US3643592A (de)
JP (1) JPS5025674B1 (de)
AT (1) AT297494B (de)
CH (1) CH504961A (de)
DE (1) DE1938279A1 (de)
FR (1) FR2039802A5 (de)
GB (1) GB1310433A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783774A (en) * 1971-08-06 1974-01-08 Schloemann Ag Pre-stressed press frame
US4259054A (en) * 1978-12-04 1981-03-31 Wehr Corporation Brick press frame having prestressed columns
US4343236A (en) * 1980-03-01 1982-08-10 G. Siempelkamp Gmbh & Co. Prestressed press frame
US20060090529A1 (en) * 2002-07-04 2006-05-04 Klaus Katzfuss Locking device
ITRE20090052A1 (it) * 2009-05-27 2010-11-28 Sacmi Pressa e metodo di montaggio per una pressa.
DE102013108299A1 (de) 2013-08-01 2015-02-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh Pressengestell
CN115027086A (zh) * 2022-07-04 2022-09-09 中冶重工（唐山）有限公司 一种钢丝预紧立柱组合框架式压机
US12528114B2 (en) 2021-09-07 2026-01-20 Langenstein & Schemann Gmbh Multi-part machine frame for a forming machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019001285A1 (de) 2019-02-23 2020-08-27 AlDA EUROPE GmbH System eines Gestells für Pressen und Pressengestell

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030879A (en) * 1960-04-25 1962-04-24 Republic Die & Tool Company Press
US3064558A (en) * 1955-03-18 1962-11-20 Asea Ab Press stand
US3465669A (en) * 1966-06-17 1969-09-09 Presses Et Materiels Hydrauliq Guide for the slide of a vertical press
US3508429A (en) * 1968-05-13 1970-04-28 Charles F Staples Frame for large press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064558A (en) * 1955-03-18 1962-11-20 Asea Ab Press stand
US3030879A (en) * 1960-04-25 1962-04-24 Republic Die & Tool Company Press
US3465669A (en) * 1966-06-17 1969-09-09 Presses Et Materiels Hydrauliq Guide for the slide of a vertical press
US3508429A (en) * 1968-05-13 1970-04-28 Charles F Staples Frame for large press

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783774A (en) * 1971-08-06 1974-01-08 Schloemann Ag Pre-stressed press frame
US4259054A (en) * 1978-12-04 1981-03-31 Wehr Corporation Brick press frame having prestressed columns
US4343236A (en) * 1980-03-01 1982-08-10 G. Siempelkamp Gmbh & Co. Prestressed press frame
US20060090529A1 (en) * 2002-07-04 2006-05-04 Klaus Katzfuss Locking device
US7415863B2 (en) * 2002-07-04 2008-08-26 Klaus Katzfuss Clamping device
ITRE20090052A1 (it) * 2009-05-27 2010-11-28 Sacmi Pressa e metodo di montaggio per una pressa.
EP2255960A1 (de) * 2009-05-27 2010-12-01 SACMI Cooperativa Meccanici Imola Società Cooperativa Presse mit einem vorgespannten Rahmen und Verfahren zur Montage dieser Presse
DE102013108299A1 (de) 2013-08-01 2015-02-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh Pressengestell
WO2015014516A1 (de) 2013-08-01 2015-02-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh Pressengestell
DE102013108299B4 (de) * 2013-08-01 2016-07-21 Siempelkamp Maschinen- Und Anlagenbau Gmbh Pressengestell und Verfahren zum Montieren eines Pressengestells sowie Presse mit einem solchen Pressengestell
US12528114B2 (en) 2021-09-07 2026-01-20 Langenstein & Schemann Gmbh Multi-part machine frame for a forming machine
CN115027086A (zh) * 2022-07-04 2022-09-09 中冶重工（唐山）有限公司 一种钢丝预紧立柱组合框架式压机

Also Published As

Publication number Publication date
JPS5025674B1 (de) 1975-08-26
AT297494B (de) 1972-03-27
CH504961A (de) 1971-03-31
FR2039802A5 (de) 1971-01-15
DE1938279A1 (de) 1970-10-15
GB1310433A (en) 1973-03-21

Similar Documents

Publication Publication Date Title
US3643592A (en) Press
DE212018000381U1 (de) Werkzeug-Klemmvorrichtung für eine Werkzeugmaschine und Werkzeugmaschine
CH668224A5 (de) Presse mit einer oberen und einer unteren platte zum aufspannen eines werkzeugpaketes.
DE3004359A1 (de) Spulengreifervorrichtung einer spulenaufsetz- und -abnahmevorrichtung an einer spinnmaschine
DE10219884B4 (de) Elektrische, direktwirkende Formspanneinheit einer Spritzgiessmaschine
DE2557056C3 (de) Filtriervorrichtung zum Gewinnen von Kakaobutter
DE1109356B (de) Spritzgussmaschine fuer thermoplastische Kunststoffe mit einer hydraulischen Formschliess- und Haltevorrichtung
DE2621727A1 (de) Presse mit veraenderbarem abstand eines stoessels von einem tisch und entlastbarem druckkissen
DE1259708B (de) Rahmenartiger Staender einer grosse Kraefte ausuebenden Presse
DE2016509C3 (de) Hydraulische Belastungsvorrichtung für Materialprüfungen
DE2451894B2 (de) Presse, insbesondere zur kontinuierlichen herstellung von holzspanplatten und schaumstoffplatten
DE9404272U1 (de) Schloßstrammer für Fahrzeugsicherheitsgurte
EP0884151A1 (de) Anlage zum Druckgiessen keramischer Artikel
WO1988006684A1 (fr) Ensemble piston verrouillable a verin de serrage
DE10219859B4 (de) Elektrische direkt wirkende Formschliesseinheit für eine Spritzgussmaschine
DE1627837C3 (de) Presse, insbesondere Strangpresse
DE1079930B (de) Hydraulische Druckausgleichvorrichtung fuer Arbeitsmaschinen
DE10209921C1 (de) Schließeinrichtung an einer Kunststoff-Spritzgießmaschine
DE69011938T2 (de) Pelletpresse für Futtermittel und dergleichen.
SU1581601A1 (ru) Гидравлический пресс
EP0544939A1 (de) Keilspannzeug für Prüfmaschinen
DE4212927C2 (de) Trennmaschine
DE1684245C (de) Hydraulische Spannpresse für das Spannen von Spanngliedern von Spannbetonkonstruktionen
DE4436742A1 (de) Hydraulische Überlastsicherung
DE19820934C2 (de) Formschließeinheit für eine Spritzgießmaschine