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US2507556A - Driving mechanism of mobile platens in presses - Google Patents

Driving mechanism of mobile platens in presses Download PDF

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Publication number
US2507556A
US2507556A US662589A US66258946A US2507556A US 2507556 A US2507556 A US 2507556A US 662589 A US662589 A US 662589A US 66258946 A US66258946 A US 66258946A US 2507556 A US2507556 A US 2507556A
Authority
US
United States
Prior art keywords
shaft
platen
crank
presses
driving mechanism
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
US662589A
Other languages
English (en)
Inventor
Bobst Henri
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2507556A publication Critical patent/US2507556A/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
    • B30B15/30—Feeding material to presses
    • 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
    • B30B1/10—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 toggle mechanism
    • B30B1/14—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 toggle mechanism operated by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • 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
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8845—Toggle links, one link pivoted to tool support

Definitions

  • the object of the present invention is a driving mechanism for a press having a movable lower platen and a fixed upper platen.
  • This mechanism is characterized by the fact that four pairs of toggle levers driving the platen are disposed each at one corner of a rectangle inside which is placed a crank shaft carrying two groups of opposed connecting rods, the latter being adapted to act on the toggle levers by moving simultaneously the knuckle joints connecting each pair of levers.
  • the annexed drawing shows an embodiment of a mechanism of this type, given by way of example and illustrates moreover an accessory improvement which is made possible by the proposed construction, and which is for this reason directly dependent therefrom.
  • Fig. 1 is a partial vertical cross section of a platen press of which the mechanism according to the present invention drives the lower platen.
  • Fig. 2 is a similar vertical cross section, at
  • Fig. 3 refers to the aforementioned accessory improvement.
  • Figs. 4 and 5 show how the means controlling the transport of the blanks worked by the press are placed in relation to the new mechanism described.
  • the press shown in Fig. 1 consists of the frame work in three parts I, 2 and 3, of which the L middle part I constitutes the standard and supports the upper fixed counter-platen 4 and guides the movable lower platen 5.
  • crank shaft is placed inside the rectangle limited by the toggle levers, and forms in the described example, a cross shaped figure with the driving shaft 15 carrying the endless screw it and driven from outside by means of the coupling fly-wheel ii.
  • the thrusts on the connecting rods repelling the toggle levers are practically balanced.
  • the different parts of the frame do not share the driving effort of the toggle levers as is the case in driving mechanisms using an outside crank, between the gear box of which and the press per se there is generally considerable reaction stress.
  • the guides for the movable platen may be reduced to a simple slide I8, guided by a die l9, as the lateral stress is very small.
  • the thrusts due to the working of the platen are absorbed by the press itself. Construction becomes less expensive and the reduced space necessitated by the mechanism obviates dismantling of the machine for transport, its middle part I being easily transported as a whole. Lubrication is also simplified.
  • Figs. 1 and 3 show moreover that the construction makes it possible to enclose easily the movable parts of the press inside a casing protecting them against introduction of impurities and of dust arising from the work carried out, particularly when the press is used to cut out cardboard.
  • being provided with an air supply valve 23, with or without a filter, and the plate 28 with a discharge valve 24, the whole will be ventilated in the sense that at each ascent of the platen 5, fresh and/or filtered air will enter the space occupied by the elements of the driving mechanism, and that at each descent of the platen, this air will be expelled the slight plenum resulting therefrom preventing dust infiltration through the seals 22.
  • the discharge valve could even be dispensed with and the air would escape by the joints seals 22.
  • This circulation of air of course also serves to cool the whole mechanism.
  • crank shaft 14 and the shaft 27 are very short and easily adaptable to a direct connection of the drive mechanism of the toggle levers to that of the chains.
  • This drive is here carried out by the crank cam 28 placed at the end of the crank shaft [4 (Fig. 2) and according to Figs. 4 and 5.
  • a connecting rod 29 articulated to the nob of the crank oscillates the toothed segment 30 thereby imparting a to and fro movement to the pinion 3! of the shaft 21, a coupling gear or clutch 35 actuated by the cam 28 and the rod 32 of the fork 33 limits the movement of the shaft 21 in the direction of the arrow 34 of Fig. 4.
  • a press having a fixed upper platen and a rectangular movable lower platen, a set of toggles connected to each corner of and beneath the lower platen, a crank-shaft located in the substantially rectangular space between said sets of toggles and having four cranks arranged in 0pposed pairs and a gear in the center thereof, a pitman connecting each said crank to one of said sets of toggles, a common frame having closed vertical end and side walls for supporting said crank-shaft and toggles and enclosing at least 4.
  • said direct driving connection comprises a crank nob rotatable with said crank-shaft, a connecting rod actuated by said nob, a toothed segment connected to and oscillatable by said rod about an axis parallel to said chain shaft, a gear on said chain shaft engaging said segment, a clutch interposed between said gear and chain shaft, and a cam on said crank-shaft controlling engagement of said clutch in one direction of oscillation of said segment and disengagement thereof in the other direction.
  • a press according to claim 2 including a cam-follower leaning on said cam, a rod rotatable with said cam-follower, and a crank on said rod connected to a movable part of said clutch, whereby rotation of said rod in response to actuation of said cam-follower by said cam will disengage said clutch in one direction of rotation of said rod and engage it in the other direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Paper (AREA)
US662589A 1945-04-18 1946-04-16 Driving mechanism of mobile platens in presses Expired - Lifetime US2507556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH611750X 1945-04-18

Publications (1)

Publication Number Publication Date
US2507556A true US2507556A (en) 1950-05-16

Family

ID=4523456

Family Applications (1)

Application Number Title Priority Date Filing Date
US662589A Expired - Lifetime US2507556A (en) 1945-04-18 1946-04-16 Driving mechanism of mobile platens in presses

Country Status (5)

Country Link
US (1) US2507556A (el)
BE (1) BE689758A (el)
DE (1) DE858353C (el)
FR (1) FR924472A (el)
GB (1) GB611750A (el)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110827A1 (en) * 1982-11-26 1984-06-13 Sanwa Co., Ltd. A thermal copying machine
US4633746A (en) * 1984-04-18 1987-01-06 Gaemmerler Hagen Device for punching flat shaped articles, particularly paper, paperboard or the like
US4763551A (en) * 1980-11-24 1988-08-16 Bobst S.A. Punching devices
US5176075A (en) * 1989-02-16 1993-01-05 Iberica A.G., S.A. Machines for handling or working materials in laminar or sheet form
US5467633A (en) * 1993-08-25 1995-11-21 Sankyo Seisakusho Co. Mechanical pressing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1054319B (de) * 1955-09-28 1959-04-02 Friedrich Schroeter Maschine zum Bearbeiten, insbesondere zum Stanzen und Praegen blatt-, bogen- oder plattenfoermiger Werkstuecke
CH354331A (fr) * 1959-05-05 1961-05-15 Bobst Fils Sa J Mécanisme d'entraînement de la platine mobile d'une presse à platines
CH381092A (fr) * 1962-10-23 1964-08-14 Bobst Fils Sa J Presse comportant une platine mobile mue par des genouilléres

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US215872A (en) * 1879-05-27 Improvement in devices for converting motion
US239475A (en) * 1881-03-29 Machine for cutting leather
US247613A (en) * 1881-09-27 Die-stamping and surface-printing machine
US395857A (en) * 1889-01-08 Cotton-compress
US423064A (en) * 1890-03-11 Power-transmitter
US511785A (en) * 1894-01-02 Apparatus for cutting linoleum
US783342A (en) * 1898-06-14 1905-02-21 Arthur R Wilfley Actuating mechanism for concentrators.
US1110977A (en) * 1913-07-09 1914-09-15 Cleveland Machine & Mfg Company Mechanical movement.
US1485546A (en) * 1920-02-06 1924-03-04 Harry F Affelder Cutting machine
US1584230A (en) * 1925-05-29 1926-05-11 Joseph C Knight Perforating machine
US1926576A (en) * 1931-03-23 1933-09-12 William R Beatty Punch press mechanism
US2081175A (en) * 1934-05-28 1937-05-25 Sun Tube Corp Method of and apparatus for forming slugs and extruding tubes
US2413554A (en) * 1943-11-04 1946-12-31 Cottrell C B & Sons Co Sheet cutting and creasing press
US2425040A (en) * 1944-08-25 1947-08-05 Cottrell C B & Sons Co Sheet cutting and creasing press

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US215872A (en) * 1879-05-27 Improvement in devices for converting motion
US239475A (en) * 1881-03-29 Machine for cutting leather
US247613A (en) * 1881-09-27 Die-stamping and surface-printing machine
US395857A (en) * 1889-01-08 Cotton-compress
US423064A (en) * 1890-03-11 Power-transmitter
US511785A (en) * 1894-01-02 Apparatus for cutting linoleum
US783342A (en) * 1898-06-14 1905-02-21 Arthur R Wilfley Actuating mechanism for concentrators.
US1110977A (en) * 1913-07-09 1914-09-15 Cleveland Machine & Mfg Company Mechanical movement.
US1485546A (en) * 1920-02-06 1924-03-04 Harry F Affelder Cutting machine
US1584230A (en) * 1925-05-29 1926-05-11 Joseph C Knight Perforating machine
US1926576A (en) * 1931-03-23 1933-09-12 William R Beatty Punch press mechanism
US2081175A (en) * 1934-05-28 1937-05-25 Sun Tube Corp Method of and apparatus for forming slugs and extruding tubes
US2413554A (en) * 1943-11-04 1946-12-31 Cottrell C B & Sons Co Sheet cutting and creasing press
US2425040A (en) * 1944-08-25 1947-08-05 Cottrell C B & Sons Co Sheet cutting and creasing press

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763551A (en) * 1980-11-24 1988-08-16 Bobst S.A. Punching devices
US4903560A (en) * 1980-11-24 1990-02-27 Bobst S.A. Punching devices
EP0110827A1 (en) * 1982-11-26 1984-06-13 Sanwa Co., Ltd. A thermal copying machine
US4633746A (en) * 1984-04-18 1987-01-06 Gaemmerler Hagen Device for punching flat shaped articles, particularly paper, paperboard or the like
US5176075A (en) * 1989-02-16 1993-01-05 Iberica A.G., S.A. Machines for handling or working materials in laminar or sheet form
US5467633A (en) * 1993-08-25 1995-11-21 Sankyo Seisakusho Co. Mechanical pressing machine

Also Published As

Publication number Publication date
DE858353C (de) 1952-12-04
FR924472A (fr) 1947-08-06
GB611750A (en) 1948-11-03
BE689758A (el) 1967-05-02

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