US3455141A - Mechanical press - Google Patents

Mechanical press Download PDF

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Publication number
US3455141A
US3455141A US610987A US3455141DA US3455141A US 3455141 A US3455141 A US 3455141A US 610987 A US610987 A US 610987A US 3455141D A US3455141D A US 3455141DA US 3455141 A US3455141 A US 3455141A
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US
United States
Prior art keywords
bedplate
mould
press
conveyors
rollers
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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
US610987A
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English (en)
Inventor
Cesare Bracco
Sergio Taverna
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Fiat SpA
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Fiat SpA
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Filing date
Publication date
Application filed by Fiat SpA filed Critical Fiat SpA
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Publication of US3455141A publication Critical patent/US3455141A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/918—Bolster and die

Definitions

  • An improved mechanical press of the type generally used for drawing sheet metal comprising a substantially quadrilateral bedplate to which one-half of a mould is secured, a ram to which the other mould half is secured and means for removing the ram towards and away from the said bedplate.
  • Supporting tables are provided on each side of the bedplate, the supporting tables having roller conveyors and the bedplate itself carrying rollers which may be either retracted to below the bedplate surface or raised to above the said bedplate surface.
  • Positioning means are provided on the supporting tables for moving the moulds transversely of the conveyors. With this roller arrangement moulds may be removed and replaced along a path which is substantially at right angle to the path followed by the sheet metal.
  • the invention relates to mechanical presses which in use include a mould and more particularly to presses for drawing sheet metal components of motor vehicle bodies.
  • a further object of the invention is to provide a press of the above-mentioned type wherein the mould may be replaced by means which themselves form a part of the press, thereby avoiding the necessity to use hoists, cranes and the like and reducing labour requirements.
  • a press for a mould for instance for drawing material such as sheet metal parts of motor vehicle bodies and of the type having a substantially quadrilateral bedplate to which one mould half is secured, a ram to which the other mould half is attached and means for effecting vertical movements of the ram towards and away from the said bedplate, the material to be drawn being fed to the mould on one side of the bedplate and removed, after drawing, from the opposite side thereof,
  • the press comprising two supporting tables for the moulds, the said tables being substantially co-planar with the press bedplate and extending from two opposite sides thereof towards the press exterior transversely of the direction of material feed and removal.
  • FIG. 1 is a perspective view of a press according to the invention
  • FIG. 2 is a perspective view, on an enlarged scale, of a detail of FIG. 1;
  • FIG. 3 is a perspective view of a mould for the press
  • FIG. 4 is a perspective view showing a possible modification of the invention.
  • FIGS. 5 and 6 show further details, of a press according to the invention, also on an enlarged scale and in sectional views respectively taken along lines V--V and VI-VI of FIG. 2;
  • FIG. 7 is a part sectional plan view of the press.
  • FIG. 8 is a sectional view of a detail of FIG. 4 taken along the line VIIIVIII thereof.
  • the press according to the invention may be seen to comprise a frame 1 having four pillars 2, 3, 4, 5 which are arranged at the corners of a rectangular bedplate 6, the four sides of which bedplate are denoted A, B, C and D respectively.
  • a rectangular ram 7 is mounted between the four columns to be slidable in a vertical direction and means known per se (not shown) are provided in the top portion 8 of the said frame 1 for effecting movement of the ram 7 towards and away from the bedplate 6.
  • Such means may, for instance, comprise mechanically operated cylinders.
  • the bedplate 6 is formed in its sides A and B which extend between the columns 1, 2 and 3 with four notches 9 each adapted to receive the stem 10 of a T-shaped bolt 11, the head portion of each of which bolts is situated above the plane of the bedplate.
  • the bottom end of each bolt stem 10 is hinged, by means of a pin 12 which is arranged parallel to the respective side of the bedplate, to
  • the said rods 13 are each associated with the piston of a vertically arranged pneumatic cylinder 14 which is secured to the bedplate 6 by means of a support 15.
  • the bolts 11 and 20 serve respectively to anchor the bedplate 6 to the bottom half 23 of a mould 25 and the ram 7 to the top half 24 0f the said mould 25 (FIG, 3).
  • Supporting plates 26, 27, are secured respectively to the bottom face of the bottom half 23 and top face of the top half 24 of the mould 25.
  • the supporting plate 26 is formed, in areas of its side edges M, N extending beyond the block which forms the bottom mould half 23, with four notches 28 and four notches 29 (two notches 28 and two notches 29 being formed in each said side).
  • the supporting plate 27 is formed in its corresponding edges M1, N1 with four notches 30 (two notches 30 being formed in each said side).
  • the notches 28 are aligned with the notches 9 and the notches 30 are aligned with the notches 18. This arrangement enables the bolts 11, 20, respectively, to be inserted in the aligned notch pairs.
  • the sheet metal to be drawn is fed to the mould and the drawn parts are removed therefrom, through the openings existing between the columns 2 and 3, and between the columns 4 and 5, the metal being moved in the direction denoted by the arrow F1 (FIGS. 1 and 2) by suitable conveying means known per se and not shown.
  • the press is providcd with means for introducing and removing the moulds in the direction denoted by the arrow F2 (FIGS. 1 and 2) which direction is transversely of the direction of sheet metal feed and removal of the drawn parts.
  • the said means comprises two supporting tables 31, 32 which are arranged to be substantially co-planar with the bedplate 6 and which extend from the sides C and D of the said 'plate through the openings between the columns 2 and 4 and 3 and 5.
  • the supporting table 31 comprises a rectangular frame 33 on which two free roller conveyors 34, 35 are mounted, the rollers 36 thereof being arranged parallel with the side C of the bedplate 6.
  • a pusher 37 beside each conveyor 34, 35, one pusher 37 only being however provided between the con veyors 34, 35, in the alternative embodiment shown on an enlarged scale in FIG. 4.
  • Each pusher 37 comprises a hydraulic cylinder 38 of length not less than half the length of the conveyors 34, 35.
  • Each cylinder 38 is secured to the frame 33, so that the rod 39 of the piston of the cylinder 38 extends towards the side C of the bedplate 6.
  • Rails 40, 41 are arranged on both sides of the cylinder or cylinders 38 and extend throughout the length of the frame 33.
  • Rollers 42, 43 are arranged to roll along the rails 40, 41 and together carry a head portion 44 which is secured transversely of the piston rod 39, further rollers 45, 46 being movable over the rails and carrying a lug 47 which is axially slidable on the cylinder 38.
  • the said head portion 44 and the said lug 47 are rigidly interconnected by rods 48 which are equal in length to the cylinder 38 and which extend parallel to the axis of the said cylinder.
  • rollers which carry the head portion 44 and the lug 47 have arranged beside them further rollers 49, 50 and 51, 52, respectively, over which further roller pairs 49, 51 and 50, 52 links of stroke-amplifying transmission chains 53,- 54 are respectively wound.
  • the said chains extend parallel to each other and their lower sides are respectively attached to the rails 40, 41 at the level of the head portion of the cylinder 38, the top sides of the said links being attached to a slide 55 which is movable over the rails 40, 41.
  • An angle member 56 and a hook 57 are hinged to the slide 55 respectively by means of pins 58, 59 which pins extend transversely of the axis of the cylinder 38.
  • each side of the frame 33 has secured thereto a bracket 60 having mounted thereon, for displacement transversely of the movement of the slide 55, a girder 61.
  • the said girders 61 each carry, on
  • each girder 61 which extend beyond the supporting table 31 and are rotatable about their vertical axes.
  • the movements of each girder 61 are elfected by respective pneumatic cylinders 63 secured to the sides of the frame 33.
  • the supporting table 32 which is arranged axially opposite the table 31, comprises a rectangular frame 64 having mounted thereon two free roller conveyors 65, 66 which are positioned as extensions of the conveyors 34, 35, respectively, from the side D of the bedplate 6.
  • a plurality of cylindrical recesses 67 are formed in the bedplate 6 (FIGS. 1 and 2), the recesses being arranged in two parallel rows adjacent the sides A and B of the said bedplate.
  • the recesses 67 each receive a free roller 68 which is caused, by a hydraulic jack 69 (FIG. 5), to perform vertical movements between two end positions. In one of these end pos1tions the roller 68 extends beyond the bedplate 6 and 1s co-planar with the rollers 36 of the conveyors 34, 35, and in the other the said roller is withdrawn into the recesses 67. The latter is conveniently referred to as the inoperative position of the roller 68.
  • the said roller 68 is mounted on a pivot 70, the ends of which are guided vertically in two eyelets 71 formed in the body portion of the hydraulic jack 69.
  • the axes of the pivots extend parallel to those of the rollers 36 of the conveyors 34, 35.
  • All the hydraulic jacks 60 are connected to a common pressure fluid pump (not shown) by a pipe 72, so that the said jacks are simultaneously operated both on extension and collapse.
  • two retractable plungers 73 are arranged along the side D of the bedplate 6, each plunger being urged by a spring 74 to extend beyond the plane of the plate 6 and arranged to be withdrawn by means of a hydraulic cylinder 75 fed with pressure fluid through a conduit 76.
  • the said mould In order to assemble the mould 25 in its operative position in the press, the said mould is placed on the conveyors 34, 35 of the supporting table 31 so that the sides M, N of the plate 26 having the notches 28, 29 are parallel with the sides A, B of the bedplate 6 (FIG. 7).
  • the mould is centred on the table 31 by operation of the cylinders 63 to engage the girders 61 with the sides M, N of the plate 26 and so move the mould transversely of the longitudinal axis of the table 31.
  • Fluid under pressure is then supplied to the hydraulic jacks 69 and the hylraulic cylinders 75 in order respectively to lift the rollers 68 above the plane of the bedplate and to withdraw the plungers 73.
  • the pushers 37 are then operated and the mould 25 is moved by the angle members" 56 towards the bedplate 6.
  • the mould is supported by the rollers 68 in order to avoid sliding contact between the plate 26 and the bedplate 6.
  • the press is now ready for operation and during such operation a further mould can be stored on the supporting table 31 for subsequent use in the press, the further mould being centred by means of the girders 61 and pneumatic cylinders 63 as described above.
  • Movement of the pushers 37 causes the further mould to be moved towards the bedplate 6 and the mould thereon is pushed thereoif and onto the supporting table 32.
  • the further mould is attached to the bedplate 6 and ram 7 by means of the bolts 11, 20 respectively, and the mould which now rests on the supporting table 32 can be removed and stored or returned to the supporting table 31.
  • the mould can be returned directly from the bedplate 6 to the supporting table 31. This is elfected by engaging it with the hooks 57 and moving the pushers in an opposite direction, that is to say, away from the bedplate 6.
  • press for a mould for drawing material such as sheet metal parts of motor vehicles, having two halves
  • the press comprislng a substantially quadrilateral bedplate, a ram, means for effecting vertical movements of the ram towards and away from the bedplate, releasable attachme t means securing respective mould halves to the bedplate and the ram respectively, two mould supporting tables arranged substantially coplanar with the bedplate and extending from two opposite sides thereof, wherein the improvement comprises the combination of:
  • each said supporting table comprises:
  • the said bedplate has formed therein a plurality of vertically extending recesses and there are provided a plurality of free rollers, the said free rollers being housed within the bedplate recesses with their axes parallel to the rollers of the said conveyors, fluid pressure actuator means being provided for simultaneously displacing the said rollers in their respective recesses between an inoperative condition in which they are withdrawn and an operative position in which they extend beyond the surface of the said bedplate to present a rolling surface co-planar with that of the rollers of the said conveyors.
  • the said means for moving the said mould longitudinally of the said conveyors comprises at least one pusher, the said pusher having an angle member arranged above the said supporting table, a slide being provided which slide carries the said angle member and which is movable longitudinally of the said conveyors.
  • the said pusher means for moving the said mould transversely of the said conveyors comprise two girders extending parallel to the said conveyors and protruding above the said supporting table on opposite sides thereof, each said girder being operabel by said actuataor means to effect movements of the said girder transversely of the said conveyors.
  • said girder actuator means comprise respective fluid pressure actuators.
  • the pusher comprises a fluid pressure actuator arranged parallel to the conveyors, a head movable by the actuator longitudinally of the conveyors, rollers carried by the head having axes of rotation parallel to the conveyor roller axes, and stroke-amplifying chains anchored at one end to the respective supporting table and passing around respective said rollers and secured at their other ends to the slide.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US610987A 1966-04-08 1967-01-23 Mechanical press Expired - Lifetime US3455141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT851866 1966-04-08

Publications (1)

Publication Number Publication Date
US3455141A true US3455141A (en) 1969-07-15

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US610987A Expired - Lifetime US3455141A (en) 1966-04-08 1967-01-23 Mechanical press

Country Status (4)

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US (1) US3455141A (fr)
DE (1) DE6606237U (fr)
FR (1) FR1510564A (fr)
GB (1) GB1124871A (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514991A (en) * 1968-06-12 1970-06-02 Kroy Co Bender table assembly
US3774287A (en) * 1970-11-09 1973-11-27 G Ireland Hydraulic press
US3818748A (en) * 1972-06-15 1974-06-25 Leslie E Tassell Safety apparatus for presses
US3910180A (en) * 1973-05-11 1975-10-07 Toyota Motor Co Ltd Air feeder for auxiliary jobs in machine tools
US4075817A (en) * 1976-04-14 1978-02-28 Gieske Jr Edward T Apparatus for baling compressible material
US4090391A (en) * 1977-02-22 1978-05-23 Industrial Steel Construction, Incorporated Press construction
US4152978A (en) * 1976-08-31 1979-05-08 Amada Company, Ltd. Methods and apparatus for changing dies in a press and stocking them
US4258620A (en) * 1978-04-18 1981-03-31 Hakan Sallander Tool fastening means for a press
US4498384A (en) * 1983-07-07 1985-02-12 Murphy William P Die transfer system
US4581916A (en) * 1984-10-01 1986-04-15 Deere & Company Press roller transfer system
FR2582575A1 (fr) * 1985-05-29 1986-12-05 Steelweld France Presse a sertir
DE3640762A1 (de) * 1986-11-28 1988-06-09 Konrad Schnupp Vorrichtung zum be- und entladen von werkzeugen bei pressen
US4880792A (en) * 1986-11-06 1989-11-14 Mazda Motor Corporation Molding installation using die
US4993933A (en) * 1986-11-06 1991-02-19 Mazda Motor Corporation Molding installation using die
US5002711A (en) * 1984-07-11 1991-03-26 Chiyoda Technical & Industrial Company Ltd. Method and apparatus for setting pattern frame and press die in instant-release type molding machine for concrete product
US5040403A (en) * 1990-10-31 1991-08-20 Chrysler Corporation Method of changing stamping die sets
US5040404A (en) * 1990-10-31 1991-08-20 Chrysler Corporation Die changing system and apparatus for stamping presses
US5040965A (en) * 1990-03-23 1991-08-20 Motorola, Inc. Molding handling aid
WO1992020473A1 (fr) * 1991-05-21 1992-11-26 Sonnie Hermansson Dispositif d'orientation et de positionnement d'un outil, comprenant des moyens de guidage et des cales de butee situes sur la table de support ou sur la plaque de montage
US5337594A (en) * 1989-07-12 1994-08-16 Ab Volvo Arrangement at press line
US5619913A (en) * 1993-05-11 1997-04-15 Isap Omv Group Spa Method and apparatus for changing dies in thermoforming presses
CN104149127A (zh) * 2014-08-14 2014-11-19 深圳市联星服装辅料有限公司 皮料下料机及其应用方法
CN106238976A (zh) * 2016-08-30 2016-12-21 昆山利玛赫自动化科技有限公司 矽钢片焊接用防断裂浮动式轨道送料装置
CN106694779A (zh) * 2017-03-22 2017-05-24 王安基 拖链支撑装置和锻造机冷却水输送系统
CN109093022A (zh) * 2018-08-30 2018-12-28 姜云峰 一种大型压力机自动上下料单元

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288569A2 (fr) * 1974-10-24 1976-05-21 Chausson Usines Sa Dispositif de presse a outils rapidement interchangeables

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543498A (en) * 1943-11-24 1951-02-27 Japikse Bertrand Hydraulic power press
US2913946A (en) * 1956-08-22 1959-11-24 Philco Corp Die handling mechanism for facilitating insertion and removal thereof in presses
US2965369A (en) * 1957-12-10 1960-12-20 Basic Products Corp Transfer mechanism for heat treating apparatus
US2996025A (en) * 1956-08-16 1961-08-15 Danly Mach Specialties Inc Readily changeable die assembly for power presses
US3002479A (en) * 1957-06-10 1961-10-03 Us Industries Inc Movable bolster for metal working press
US3111100A (en) * 1958-01-16 1963-11-19 Danly Mach Specialties Inc Quick die change press
GB950884A (en) * 1960-08-08 1964-02-26 Ct D Etudes Et D Applic Des Te Apparatus for loading, unloading and locating massive objects, e.g. press tools, on a flat table, e.g. of a power press
US3134350A (en) * 1961-05-02 1964-05-26 Danly Mach Specialties Inc Carrier clamp for quick die change press
US3225686A (en) * 1963-08-30 1965-12-28 Minster Machine Co Press with sliding bolster and die clamp
US3229791A (en) * 1962-07-11 1966-01-18 Federal Warco Division Apparatus for use with presses and the like
US3230869A (en) * 1962-06-19 1966-01-25 Wilkins & Mitchell Ltd Raising and clamping means for sliding bolsters
US3316834A (en) * 1964-11-21 1967-05-02 Erba & C Off Mec Press die handling and removing means

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543498A (en) * 1943-11-24 1951-02-27 Japikse Bertrand Hydraulic power press
US2996025A (en) * 1956-08-16 1961-08-15 Danly Mach Specialties Inc Readily changeable die assembly for power presses
US2913946A (en) * 1956-08-22 1959-11-24 Philco Corp Die handling mechanism for facilitating insertion and removal thereof in presses
US3002479A (en) * 1957-06-10 1961-10-03 Us Industries Inc Movable bolster for metal working press
US2965369A (en) * 1957-12-10 1960-12-20 Basic Products Corp Transfer mechanism for heat treating apparatus
US3111100A (en) * 1958-01-16 1963-11-19 Danly Mach Specialties Inc Quick die change press
GB950884A (en) * 1960-08-08 1964-02-26 Ct D Etudes Et D Applic Des Te Apparatus for loading, unloading and locating massive objects, e.g. press tools, on a flat table, e.g. of a power press
US3134350A (en) * 1961-05-02 1964-05-26 Danly Mach Specialties Inc Carrier clamp for quick die change press
US3230869A (en) * 1962-06-19 1966-01-25 Wilkins & Mitchell Ltd Raising and clamping means for sliding bolsters
US3229791A (en) * 1962-07-11 1966-01-18 Federal Warco Division Apparatus for use with presses and the like
US3225686A (en) * 1963-08-30 1965-12-28 Minster Machine Co Press with sliding bolster and die clamp
US3316834A (en) * 1964-11-21 1967-05-02 Erba & C Off Mec Press die handling and removing means

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514991A (en) * 1968-06-12 1970-06-02 Kroy Co Bender table assembly
US3774287A (en) * 1970-11-09 1973-11-27 G Ireland Hydraulic press
US3818748A (en) * 1972-06-15 1974-06-25 Leslie E Tassell Safety apparatus for presses
US3910180A (en) * 1973-05-11 1975-10-07 Toyota Motor Co Ltd Air feeder for auxiliary jobs in machine tools
US4075817A (en) * 1976-04-14 1978-02-28 Gieske Jr Edward T Apparatus for baling compressible material
US4152978A (en) * 1976-08-31 1979-05-08 Amada Company, Ltd. Methods and apparatus for changing dies in a press and stocking them
US4090391A (en) * 1977-02-22 1978-05-23 Industrial Steel Construction, Incorporated Press construction
US4258620A (en) * 1978-04-18 1981-03-31 Hakan Sallander Tool fastening means for a press
US4498384A (en) * 1983-07-07 1985-02-12 Murphy William P Die transfer system
US5002711A (en) * 1984-07-11 1991-03-26 Chiyoda Technical & Industrial Company Ltd. Method and apparatus for setting pattern frame and press die in instant-release type molding machine for concrete product
US4581916A (en) * 1984-10-01 1986-04-15 Deere & Company Press roller transfer system
FR2582575A1 (fr) * 1985-05-29 1986-12-05 Steelweld France Presse a sertir
US4880792A (en) * 1986-11-06 1989-11-14 Mazda Motor Corporation Molding installation using die
US4993933A (en) * 1986-11-06 1991-02-19 Mazda Motor Corporation Molding installation using die
DE3640762A1 (de) * 1986-11-28 1988-06-09 Konrad Schnupp Vorrichtung zum be- und entladen von werkzeugen bei pressen
US5337594A (en) * 1989-07-12 1994-08-16 Ab Volvo Arrangement at press line
US5040965A (en) * 1990-03-23 1991-08-20 Motorola, Inc. Molding handling aid
US5040403A (en) * 1990-10-31 1991-08-20 Chrysler Corporation Method of changing stamping die sets
US5040404A (en) * 1990-10-31 1991-08-20 Chrysler Corporation Die changing system and apparatus for stamping presses
WO1992020473A1 (fr) * 1991-05-21 1992-11-26 Sonnie Hermansson Dispositif d'orientation et de positionnement d'un outil, comprenant des moyens de guidage et des cales de butee situes sur la table de support ou sur la plaque de montage
US5619913A (en) * 1993-05-11 1997-04-15 Isap Omv Group Spa Method and apparatus for changing dies in thermoforming presses
CN1051267C (zh) * 1993-05-11 2000-04-12 伊萨普Omv集团公司 在热成型热塑性材料的设备中更换模具的方法与装置
CN104149127A (zh) * 2014-08-14 2014-11-19 深圳市联星服装辅料有限公司 皮料下料机及其应用方法
CN106238976A (zh) * 2016-08-30 2016-12-21 昆山利玛赫自动化科技有限公司 矽钢片焊接用防断裂浮动式轨道送料装置
CN106238976B (zh) * 2016-08-30 2018-01-23 昆山利玛赫自动化科技有限公司 矽钢片焊接用防断裂浮动式轨道送料装置
CN106694779A (zh) * 2017-03-22 2017-05-24 王安基 拖链支撑装置和锻造机冷却水输送系统
CN109093022A (zh) * 2018-08-30 2018-12-28 姜云峰 一种大型压力机自动上下料单元
CN109093022B (zh) * 2018-08-30 2024-02-02 姜云峰 一种大型压力机自动上下料单元

Also Published As

Publication number Publication date
FR1510564A (fr) 1968-01-19
GB1124871A (en) 1968-08-21
DE6606237U (de) 1970-09-24

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