US3398679A - Platen press - Google Patents

Platen press Download PDF

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Publication number
US3398679A
US3398679A US63144767A US3398679A US 3398679 A US3398679 A US 3398679A US 63144767 A US63144767 A US 63144767A US 3398679 A US3398679 A US 3398679A
Authority
US
United States
Prior art keywords
platen
frame
press
tool holding
cylinder
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
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English (en)
Inventor
Grivet Francis
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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 Bobst SA filed Critical Bobst SA
Application granted granted Critical
Publication of US3398679A publication Critical patent/US3398679A/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
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/028—Loading or unloading of dies, platens or press rams
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9483—Adjustable
    • Y10T83/9486—Rectilinearly

Definitions

  • the invention relates to platen presses having a fixed platen and a movable one adapted for processing sheet material such as paper or cardboard, for the purpose of cutting, punching, or corrugating the sheet material.
  • a fixed platen and a movable one adapted for processing sheet material such as paper or cardboard, for the purpose of cutting, punching, or corrugating the sheet material.
  • Each of the platens is fitted with a frame for the processing of the sheet material.
  • the frame for the upper fixed platen is a tool holder and it supports the tools which process the sheet material, while the frame on the lower movable platen is a counter-plate.
  • the principal object of the present invention is to provide a device insuring the centering of the tool holding frame, as well as its protection against the consequences of improper handling.
  • the invention also contemplates the centering of the counter-plate cooperating with the tool holding frame.
  • the first objective is achieved by an arrangement wherein the tool holding frame comprises at two opposite edges, means insuring a predetermined position thereof in relation to an element fixed with the upper platen and including for one of said edges, a frame housing adapted to accommodate an axially movable centering member integral with the platen and associated with a mechanical part accompanying it in its travel with the object of being placed in the trajectory of the frame, but immediately outside the latter when the frame is in centered position, the centering member being operated by a pressure fluid acting simultaneously on the press, said centering member being elfective to impede starting of the press as long as said member is not in a locking position of the frame in its centered position.
  • the pressure fluid may simultaneously be utilized for the application and maintainence of the centered frame against the platen.
  • This maintainence may be by mechanical means, or by a combination of mechanical means and pneumatic means and wherein in the latter case, the centered frame is mechanically urged against the upper platen and at the same time is subjected to a suction pressure between the frame and platen.
  • the assembly of the centering, fixation and safety means of the two frames may be controlled by a hydraulic circuit according to the invention.
  • FIGURE 1 is a diagrammatic view, in perspective, illustrating a portion .of a press showing the problem to be solved in positioning a tool holding frame relative to the upper fixed platen of the press;
  • FIGURE 2 is a side view, in elevation, of a portion of the press showing a centering device for the tool holding frame in inoperative position;
  • FIGURE 3 shows the tool holding frame in locked and centered position
  • FIGURE 4 is a diagrammatic illustration of a hydraulic control for the centering device
  • FIGURES 5 and 6 are views similar to those of FIGS. 2 and 3, showing some features of the device;
  • FIGURE 7 is a diagrammatic illustration similar to that of FIG. 4, but with the addition of a device for clamping the frame against the platen;
  • FIGURE 8 is a detailed perspective view to a larger scale of a part of the tool holding frame
  • FIGURE 9 is a view in elevation of a portion of the movable lower platen and of centering means of a counterplate lying on the latter;
  • FIGURE 10 is a diagrammatic illustration of the centering and fixation means of the tool holding frame and the counterplate, and safety means adapted to protect these two members from untimely starting of the press, should they be incorrectly placed.
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 Detailed descritpion of the invention
  • FIG. 1 the upper platen 1 and the lower platen 2 of a press.
  • a tool holding frame 3 is introduced between the platens and secured to one thereof in a fixed predetermined position relative thereto.
  • the upper platen 1 moves up and down in relation to the movable platen 2, and it is contemplated that the upper platen will receive the tool holding frame 3.
  • the frame 3 is provided with suitable means at its opposite sides so as to allow centering with respect to platen 1.
  • the frame 3 is inserted between the platens in the direc tion of the arrow 4, the front side of the frame 3 having a fork-like projection 5.
  • the projection 5 is adapted to cooperate with a rod which is solid with the platen 1 and which serves to center the front side of the frame laterally, Without influencing its position in the inserting direction.
  • the rod is not shown, but it is inserted into the fork of projection 5 without clearance.
  • the frame 3 has a lug 6 with a hole 7.
  • the platen 1 supports a stem 12 in axially movable position so that the stem 12 may be inserted into the hole 7.
  • This engagement of stem 12 in hole 7 combined with the engagement of fork 5, will guarantee a predetermined position of the frame 3 in relation to the platen 1.
  • FIGS. 2 and 3 This disposition is represented in FIGS. 2 and 3.
  • the frame 3 In FIG. 2 the frame 3 is represented in dashed and dotted line in the course of being introduced between the platen, whereas in FIG. 3 the frame 3 has been introduced between the platen and centered.
  • Rod 9 Fixed to the platen 1 is a cylinder 8, containing a piston to which a rod 9 is secured.
  • Rod 9 supports an angle member 10 having a small leg fixed to rod 9 and extending in a plane perpendicular to the rod, whereas the long leg of-mernben extends parallel tethe-eylinder axis;--
  • the small leg is adapted to contact the head 11 of the stem 12 which is guided in a block 13 integral with the platen 1.
  • the stem 12 is subjected to the action of arir'awback-spring. tending to lift the. head..11 and thereby. the stem 12in the directionof the cylinder 8.- v
  • the stem 12 and thelong leg of the angle member 10 are outside the path of the frame 3, which can befreely introduced under the platenl inithe direction -of:the
  • a pressure fluid such .as air or oil
  • a pressure fluid is admitted in the cylinder 8, so as to push'the piston therein in the direction of the head 11 and obtain the position shown inFIG. 3 in which the slightly conical lower end of the stem. 12 is introduced into the hole 7 of thelug-6, soas to guide the frame 3 and to complete the centeringthereof.
  • the long legof. the member 10 passes adjacent the'lug 6 without contacting it.
  • v v t The illustration in FIG. 4 shows how the. device described is utilized as a safety device, allowing the starting of the press only when the frame 3 is centered.
  • a second conduit 15 extends laterally from the cylinder 8 and is.connected to a small cylinder 16.
  • the conduit 15 is located in. cylinder 8 so that the piston therein normally "blocks conduit 15, but exposes it when the frame 3 has been centered by the extension-of rod 9. At that moment, the fluid acts also on the piston of the small cylinder 16 and brings about the closing of a switch 17 in a supply circuit 18 for the press, suchthat thepress will operate only when there is fluid under pressure in the conduit 15.
  • control illustrated in FIG. 4 has been considered to be operated hydraulically; however, it could also be pneumatic. Moreover, the control can be electrically operated through the use of electromagnets and relays for instance.
  • the angle member 10 also serves the function of an additional safety device, as explained with reference to FIGS. 5 and 6.
  • a counter-plate 24 on the lower platen 2 will be centered by means similar, to .those described hereinabove with respect to the frame 3 'and the -upper platen 1.
  • Thecounter-plate- has a lug 2'4 with a hole in which can lye-inserted acentering'rOd 25 solid-with n piston moving in the cylinder 26, itself fixed to the platen 2.
  • the piston is driven by fluid uiiderpressure from conduit 27.
  • the pressurefluid can, flowthrough the conduit 28 when the piston has reached the centering position of the counter-plate; ⁇ i/itl'rthe a'im, as previbil'sly described, to act on auxiliary, fixation means-for the counter-plate and thereby securethe ,counter-plate23to lower platen .2.
  • the cylinder 26 and its piston will be of, insufiigfint str angth ,to lift the-.counter-plate-23. Thereby, it is not-possible for the-pistontoraise anoncentered counter-plate and allow the starting ofthe press withoutthe counter-plate being in proper working position.
  • the counter-plate On theopposite sideofthe lug 24,- 'the counter-plate will be guided.exactly-as sh0wn in FIG, l for the tool holding frame, i.e. by means of a fork such as 5 anda guiding rod.
  • the counter-plate can also be guided by stops integral withtheplatenfor stopping the counterplate in properposition,
  • FIG. 10 There is diagrammatically represented in FIG. 10 a control circuit by which the centering and fixation of the tool holding frame and the counter-plate can be carried out together and with complete safety,
  • the reference numbers herein refer to the same elementsas in the fig"- u'res-previously described.
  • valve29 'i's opened When valve29 'i's opened,'a source of fluid 30' under pressure is put into"communication with the cylinder 8 through conduit 14.
  • The'stem :12 is displaced and the frame 3 is center'ed by the insertion of stem 12 into hole 7.
  • the corresponding piston 'uncovers the conduit '15 and the fluid under pressure passes through 'conduit'21 and feeds the cylinders 20Whe'reby the frame 3 isurgedagainstthe plate'n'by "means of catches "or hooks 19 as 'previously described'At the same tim'eand through cylinder 16fand switch 17', a portion 18 'oftiie press supplyfcir uit is "closed;
  • FIGS. 1 and 7 show how this operation can be performed by means of catches or hooks 19 operated by pistons moving in cylinders 20, fixed to the platen 1 and receivingfluid under pressure through conduits 21.
  • the cylinders 20 are fed with pressure fluid from conduit 14 under the control of cylinder 8 via conduits 15 and 21. Thus, it is possible tofeed. the cylinders 20 with pressure fluid at the same time that cylinder 16 is activated to close switch 17.
  • FIG. .8 shows stops or tappets 22 adjoining the lug 6 of the frame 3.
  • the stops 22, cooperate for instance, with the platen arris, to fix the position in which the stem' 12 can be inserted into the hole 7.
  • the described arrangement thus insures an obilgatdry correct positioning of the tool assembly and the perfect application of the tool holding frame against the bed of the movable upper platen.
  • a platen press having upper and lower platens and adapted for receiving a tool holding frame and a countersupport frame between said platens for the performance of an operation on a sheet of material, said press comprising means for positioning the tool holding frame in a predetermined location with respect to one of said platens, the latter means including a centering element secured to said one platen and axially movable between a retracted inoperative positioning and an extended operative position in which it can engage the tool holding frame in said predetermined location, and means for operating said centering element and including a member movable therewith so as to be in the path of movement of the tool holder frame but out of contact therewith when the tool holding frame is in said predetermined location and the centering element is extended, the latter said means being operative to enable operation of the press only if said centering element is in extended position and the movable member fails to contact the tool holder frame.
  • a press as claimed in claim 1 comprising means coupled to the means operating said centering element for holding the tool holding frame against said one platen when the centering element is in extended position.
  • said means for operating said centering element comprises a cylinder fixed to said one platen, and a piston in said cylinder for driving the centering element, said movable member being secured to said piston, a conduit for the supply of pressure fluid to said cylinder, normally open switch means for controlling the operation of the press, and a second conduit coupled to the cylinder and to the switch means and the means for holding the tool holding frame against said one platen, said piston blocking the passage of pressure fluid to said second conduit until said piston is in a position in which the centering element is extended in operative position at which time the pressure fluid closes said switch means and activates the means for holding the tool holding frame against said one platen, whereby simultaneously the press is started and the tool holding frame is held against said one platen.
  • a press as claimed in claim 1 comprising means on the other of the platens for engaging the counter support frame in a predetermined position relative thereto.
  • a press as claimed in claim 7 wherein the means for engaging the counter support frame comprises a device operated by fluid pressure, and fluid pressure operated switch means for controlling operation of the press, the latter switch means normally being open and coupled to said device, for being supplied with fluid pressure to close the switch means when the counter support frame is in said predetermined position.
  • said means for engaging the counter support frame comprises a piston operated by said device operated by fluid pressure, said counter support frame having a hole in which said piston is received when the counter support frame is in said predetermined position, said device which is operated by fluid pressure having a strength which is sufficiently low so as to be unable to lift the counter support frame with said piston should the latter be misaligned with said hole therein.
  • a press as claimed in claim 1 comprising suction means, operated by the means which operates the centering element, for applying the tool holding frame against said one platen when the latter frame is in said predetermined position and the centering element is in operative position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
US63144767 1966-04-15 1967-04-17 Platen press Expired - Lifetime US3398679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH565366A CH452358A (fr) 1966-04-15 1966-04-15 Presse à platines pourvue d'un châssis porte-outil amovible

Publications (1)

Publication Number Publication Date
US3398679A true US3398679A (en) 1968-08-27

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ID=4297167

Family Applications (1)

Application Number Title Priority Date Filing Date
US63144767 Expired - Lifetime US3398679A (en) 1966-04-15 1967-04-17 Platen press

Country Status (8)

Country Link
US (1) US3398679A (cs)
BE (1) BE696735A (cs)
CH (1) CH452358A (cs)
DE (1) DE1536959A1 (cs)
ES (1) ES339790A1 (cs)
FR (1) FR1519378A (cs)
GB (1) GB1125245A (cs)
SE (1) SE331415B (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070034092A1 (en) * 2005-08-12 2007-02-15 Lawrence Eric C Heated discharge platen for dough processing system
USD539821S1 (en) * 2004-12-08 2007-04-03 Stewart Greer Die jacket
US20090272277A1 (en) * 2008-05-01 2009-11-05 Lawrence Equipment, Inc. Vacuum Pressing Platen Assembly and Method for Adjustment
CN103459135A (zh) * 2011-04-05 2013-12-18 鲍勃斯脱梅克斯股份有限公司 热转印印制装置
US8662313B2 (en) 2011-07-20 2014-03-04 Lawrence Equipment Inc. Systems and methods for processing comestibles
US8689685B2 (en) 2010-11-04 2014-04-08 Lawrence Equipment Inc. Dough forming pressing plate with spacers

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB777110A (en) * 1952-12-03 1957-06-19 Leonida Patrignani Improvements in or relating to units for the production of parts by stamping or pressing
CA633234A (en) * 1961-12-19 F. Fairgrieve Donald Die set
US3064511A (en) * 1956-06-30 1962-11-20 Allander Claes Vilhelm Method for rapid mounting of tool sets
GB939551A (en) * 1960-09-30 1963-10-16 Loewy Eng Co Ltd Press having two co-operating carriers for tools or workpieces
US3167992A (en) * 1962-01-11 1965-02-02 Bobst J Device for the fixing of the tool of a platen press against the upper bed
US3188899A (en) * 1959-09-28 1965-06-15 Niagara Machine & Tool Works Automatic die clamping mechanism for power presses
US3225686A (en) * 1963-08-30 1965-12-28 Minster Machine Co Press with sliding bolster and die clamp
US3285115A (en) * 1965-12-28 1966-11-15 Robert H Cederleaf Automatic die clamping mechanism for power presses

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA633234A (en) * 1961-12-19 F. Fairgrieve Donald Die set
GB777110A (en) * 1952-12-03 1957-06-19 Leonida Patrignani Improvements in or relating to units for the production of parts by stamping or pressing
US3064511A (en) * 1956-06-30 1962-11-20 Allander Claes Vilhelm Method for rapid mounting of tool sets
US3188899A (en) * 1959-09-28 1965-06-15 Niagara Machine & Tool Works Automatic die clamping mechanism for power presses
GB939551A (en) * 1960-09-30 1963-10-16 Loewy Eng Co Ltd Press having two co-operating carriers for tools or workpieces
US3167992A (en) * 1962-01-11 1965-02-02 Bobst J Device for the fixing of the tool of a platen press against the upper bed
US3225686A (en) * 1963-08-30 1965-12-28 Minster Machine Co Press with sliding bolster and die clamp
US3285115A (en) * 1965-12-28 1966-11-15 Robert H Cederleaf Automatic die clamping mechanism for power presses

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD539821S1 (en) * 2004-12-08 2007-04-03 Stewart Greer Die jacket
US20070034092A1 (en) * 2005-08-12 2007-02-15 Lawrence Eric C Heated discharge platen for dough processing system
US8746132B2 (en) 2005-08-12 2014-06-10 Lawrence Equipment Inc. Heated discharge platen for dough processing system
US20090272277A1 (en) * 2008-05-01 2009-11-05 Lawrence Equipment, Inc. Vacuum Pressing Platen Assembly and Method for Adjustment
WO2009135123A3 (en) * 2008-05-01 2010-06-10 Lawrence Equipment, Inc. Vacuum pressing platen assembly and method for adjustment
US8746133B2 (en) 2008-05-01 2014-06-10 Lawrence Equipment Inc. Vacuum pressing platen assembly and method for adjustment
CN102112001B (zh) * 2008-05-01 2014-08-27 劳伦斯设备有限公司 真空压制压盘组件和调节方法
CN104222194A (zh) * 2008-05-01 2014-12-24 劳伦斯设备有限公司 真空压制压盘组件和调节方法
US9386775B2 (en) 2008-05-01 2016-07-12 Lawrence Equipment Inc. Vacuum pressing plate assembly
US10058102B2 (en) 2010-11-04 2018-08-28 Lawrence Equipment Inc. Dough forming pressing plate with spacers
US10238120B2 (en) 2010-11-04 2019-03-26 Lawrence Equipment Inc. Dough forming pressing plate with spacers
US8689685B2 (en) 2010-11-04 2014-04-08 Lawrence Equipment Inc. Dough forming pressing plate with spacers
CN103459135A (zh) * 2011-04-05 2013-12-18 鲍勃斯脱梅克斯股份有限公司 热转印印制装置
US9849706B2 (en) 2011-04-05 2017-12-26 Bobst Mex Sa Hot stamping printing device
US9579914B2 (en) 2011-04-05 2017-02-28 Bobst Mex Sa Hot stamping printing device
US8662313B2 (en) 2011-07-20 2014-03-04 Lawrence Equipment Inc. Systems and methods for processing comestibles

Also Published As

Publication number Publication date
FR1519378A (fr) 1968-03-29
CH452358A (fr) 1968-05-31
DE1536959A1 (de) 1970-04-16
BE696735A (cs) 1967-09-18
SE331415B (cs) 1970-12-21
GB1125245A (en) 1968-08-28
ES339790A1 (es) 1968-08-16

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