EP0422368B1 - Fixation auxiliaire de l'outil dans une presse à platines - Google Patents

Fixation auxiliaire de l'outil dans une presse à platines Download PDF

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Publication number
EP0422368B1
EP0422368B1 EP90116314A EP90116314A EP0422368B1 EP 0422368 B1 EP0422368 B1 EP 0422368B1 EP 90116314 A EP90116314 A EP 90116314A EP 90116314 A EP90116314 A EP 90116314A EP 0422368 B1 EP0422368 B1 EP 0422368B1
Authority
EP
European Patent Office
Prior art keywords
tool
chambers
upper beam
plate
rear side
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
EP90116314A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0422368A3 (en
EP0422368A2 (fr
Inventor
Marcel Yerly
Clément Calore
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
Priority to AT90116314T priority Critical patent/ATE94124T1/de
Publication of EP0422368A2 publication Critical patent/EP0422368A2/fr
Publication of EP0422368A3 publication Critical patent/EP0422368A3/fr
Application granted granted Critical
Publication of EP0422368B1 publication Critical patent/EP0422368B1/fr
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
    • B30B15/026—Mounting of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters
    • 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
    • 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

Definitions

  • the present invention relates to a method for auxiliary fixing of the tool in a plate press for cutting, upsetting or embossing sheet material, a process of the kind defined in the preamble of claim 1.
  • the tool In such a platen press, for example cutting a sheet material such as paper or cardboard, the tool generally consists of a rectangular plate, of large dimension, on one face of which are mounted members cutting.
  • This plate being provided with a rigid frame all along its periphery, a frame which serves to mount and press the plate against the underside of the upper bed of the press, it follows that the tool can be considered a thin plate which tends to flex between its attachment points located on its edges and formed by the frame fixed to the press.
  • the object of the present invention is therefore to provide an auxiliary attachment, between the tool and the bed base, which eliminates the drawbacks described above.
  • the solution to the problem posed is given by the method according to claim 1 and the press according to claims 6 and 10.
  • the cutting press has a lower plate and an upper plate.
  • the lower plate comprises a movable lower base 2 supporting the cardboard 4 to be cut. Between the cardboard 4 and the lower base 2 are successively interposed a cutting sheet 28 and a plate 5.
  • the cardboard 4 is taken above the cutting sheet 28 using a clamp system 22 whose drive is not shown here.
  • the upper plate comprises an upper bed base 1 and a cutting tool 3 fixed on the underside of the bed base 1.
  • the cutting tool 3 comprises, in a generally known manner: a shape or shape plate 6, generally made of wood, carrying cutting threads 12, presser rubbers 11 and repelling threads (not shown); a rear plate 7 intended to connect the form 6 to a frame 15 surrounding the form 6 and consisting of bars 13a, 13b between which the rear plate 7 is sandwiched; and two rails 20 each located respectively on each longitudinal side of the frame 15 oriented in the direction of introduction of the tool 3 between the two plates, the rails 20 being intended to come into rolling contact with rollers 16 fixed by brackets 25 to the upper base 1.
  • the shape 6 is fixed to the rear plate 7 by means of screws and nuts 19.
  • a sheet of placing 8 Between the rear plate 7 and the upper base 1 are successively interposed a sheet of placing 8, placing papers 10 generally made up short pieces of narrow paper tape, and a protective protective sheet 9.
  • means (not shown) engaged with the frame 15 pull or press the tool 3 in the direction of the upper base 1.
  • the lower base 2 is moved and pressed in a known manner against the upper base 1.
  • the tool 3, constituted by the shape 6, the rear plate 7 and the frame 15, can be considered as a thin plate which, at rest, tends to bend between its points of fastener constituted by the bars 13a, 13b bearing on their rails 20 on the rollers 16. It is easy to understand that this deflection, in the case of a shape of 1 m 2 of surface, can be very significant, this with all the disadvantages mentioned above. It should be noted that the bet sheet 8 and the bet protection 9 must remain, during each cutting operation, pressed towards the rear sheet 7 and, thus, undergo a bending stress identical to that of this sheet 7. Thus, even if the covering sheet 8 and its protection 9 are in principle made of material other than metal, namely paper or synthetic material, the repeated action, at high rate, of this bending stress will also cause them destruction or deterioration by fatigue.
  • the use of an auxiliary fixing based on the principle of an air vacuum created between the upper base 1 and the tool 3, has the advantage of establishing between the two elements an additional non-punctual and active connection over their entire contact surface.
  • FIG. 1 clearly shows that the height dimension of the upper base 1 is much greater than that of the tool 3.
  • the internal volume of the upper base 1 is divided by walls 17 into several chambers 18a, 18b. This division is generally made so that one obtains two rows of lateral chambers 18a extending over the entire length of the upper base 1, in the direction perpendicular to the travel of the cardboard 4 to be cut, and several central chambers 18b distributed over two rows between the two rows of lateral chambers 18a.
  • At the bottom of the central chambers 18b are pierced at least two conduits 23 which pass through the upper base 1 so as to open onto the lower face of the latter.
  • conduits 23 are extended to the rear plate 7 by corresponding openings 24 executed in the bet protection 9 and the bet sheet 8.
  • the chambers 18a, 18b are in principle provided, after foundry, with an opening 30 of large dimension and opening out from the upper face of the upper base 1.
  • their upper opening 30 is machined so as to be able to apply a plug 31 provided with a seal 32.
  • These same central chambers 18b communicate with each other by transverse conduits 33, 35. All of the central chambers 18b are subjected to a pressure created by a vacuum pump (not shown). With such an arrangement, it has surprisingly been found that, using a vacuum pump, of the same size as that used previously, the suction force, tending to pull the tool 3 against the box spring, is more than enough to prevent any bending of the tool 3.
  • the compressive stress between the two plates that is to say when the lower base 2 is moved against the tool 3, exhibits over time a bell curve extending approximately over 1/6 of the cutting period.
  • the volume constituted by the central chambers 18b, the various conduits 33, 35, 23 and the space comprised between the underside of the upper base 1 and the rear plate 7, a space almost completely filled by the protection 9 and the covering sheet 8, constitutes a perfectly sealed environment thanks to the plug 31 provided with the seal 32, and the fact that the protection 9 and the setting sheet 8 are subjected, all along their superimposed periphery between the rear sheet 7 and the upper base 1, to a compression such that any penetration of air from the outside to the inside the central chambers 18b is made impossible.
  • the present invention makes judicious use of the large chambers already existing in the upper bed base 1 of the press. Without significant modifications and, so to speak, without the addition of new elements, therefore at very little cost, the problem of the harmful deflection of the tool 3 is resolved.
  • the cleaning of the latter would not present any difficulty; in fact, access, via the upper openings 30 of the chambers 18b, is always easy, because the plugs 31 with seal 32 can be simply removed by hand when the chambers 18b are not under vacuum.
  • the seals 32 also have the effect of preventing the plugs 31 from vibrating in their seat.
  • the auxiliary attachment method by suction does not interfere with the placing operation. Indeed, if a conduit 23 falls exactly in front of a setting paper 10, it is possible not to use this conduit 23, that is to say not to make a corresponding opening 24 in the sheet of stake 8, since there are still enough other conduits 23 available.
  • each of the central vacuum chambers 18b is provided with at least two conduits 23 so as to have, in all probability, enough conduits available. In the case where the form 6 does not occupy the entire surface of the rear plate 7, the holes for fixing screw 19 located outside of the form 6 will be closed using an adhesive paper.
  • the conduits 23 made at the bottom of the central chambers 18b could have yet another function.
  • the air pressure curve in the films (or pockets) of air described above and located between the rear sheet 7 and the underside of the upper base 1 at the level of the sheet protection 9 and the bet sheet 8 has a shape similar to that in bell of the cutting operation, that is to say that at the moment when the lower movable bed base 2 begins to descend, this curve no longer follows that in bell but almost descends in a vertical. It is at this precise moment that the phenomenon of strong relaxation takes place which causes the phenomenon in question of condensation of the air trapped in the films of air. To avoid this expansion, a first obvious solution is obviously to try to prevent the pressurization of this air.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Press Drives And Press Lines (AREA)
  • Basic Packing Technique (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Adhesive Tapes (AREA)
  • Details Of Cutting Devices (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
EP90116314A 1989-10-12 1990-08-25 Fixation auxiliaire de l'outil dans une presse à platines Expired - Lifetime EP0422368B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90116314T ATE94124T1 (de) 1989-10-12 1990-08-25 Verfahren zum zusaetzlichen befestigen des werkzeuges einer plattenpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3709/89 1989-10-12
CH3709/89A CH682314A5 (enrdf_load_stackoverflow) 1989-10-12 1989-10-12

Publications (3)

Publication Number Publication Date
EP0422368A2 EP0422368A2 (fr) 1991-04-17
EP0422368A3 EP0422368A3 (en) 1991-06-12
EP0422368B1 true EP0422368B1 (fr) 1993-09-08

Family

ID=4261832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116314A Expired - Lifetime EP0422368B1 (fr) 1989-10-12 1990-08-25 Fixation auxiliaire de l'outil dans une presse à platines

Country Status (11)

Country Link
US (1) US5104370A (enrdf_load_stackoverflow)
EP (1) EP0422368B1 (enrdf_load_stackoverflow)
JP (1) JPH07110480B2 (enrdf_load_stackoverflow)
AT (1) ATE94124T1 (enrdf_load_stackoverflow)
AU (1) AU641690B2 (enrdf_load_stackoverflow)
BR (1) BR9005087A (enrdf_load_stackoverflow)
CA (1) CA2026324C (enrdf_load_stackoverflow)
CH (1) CH682314A5 (enrdf_load_stackoverflow)
DE (1) DE69003218T2 (enrdf_load_stackoverflow)
DK (1) DK0422368T3 (enrdf_load_stackoverflow)
ES (1) ES2044349T3 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0426996D0 (en) * 2004-12-09 2005-01-12 Gencia Ltd Container production
US7270038B1 (en) * 2005-07-08 2007-09-18 Mcgee Sean Mat for die cutter
GB201106279D0 (en) * 2011-04-14 2011-05-25 Collins Craig "Creasing accessory and method of providing a crease in a substrate"
DE102011113993A1 (de) * 2011-09-21 2013-03-21 Heidelberger Druckmaschinen Ag Verfahren zum Zurichten eines Stanzwerkzeuges und Bogenstanzstation mit ansaugbarer Abdeckplatte
JP5197870B1 (ja) * 2012-02-11 2013-05-15 株式会社メイク・ア・ボックス 打抜機のバランス補正シートの作製方法、打抜機のバランス補正型、並びに打抜機のバランス補正方法、及び打抜機のバランス補正シート
DE102012020360A1 (de) * 2012-10-17 2014-04-17 Heidelberger Druckmaschinen Ag Stanzmaschine mit Überwachungssensor und Verfahren zum Schnellabschalten einer solchen Maschine
KR101416811B1 (ko) * 2012-12-28 2014-08-06 비나텍주식회사 슈퍼 커패시터용 전극 부착 장치 및 그를 이용한 슈퍼 커패시터의 제조 방법
JP2015020237A (ja) * 2013-07-18 2015-02-02 株式会社ディスコ 切削装置
JP6069122B2 (ja) 2013-07-22 2017-02-01 株式会社ディスコ 切削装置
CN108724335A (zh) * 2018-03-28 2018-11-02 句容市兴武包装有限公司 一种圆筒状板材切割压印一体装置
CN109080226A (zh) * 2018-08-13 2018-12-25 浙江森林控股有限公司 一种高精密压痕机
CN113147071A (zh) * 2021-04-01 2021-07-23 黄思昕 一种用于环保的固体垃圾压缩处理装置及其使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048771B (enrdf_load_stackoverflow) * 1956-04-16 1900-01-01
CH372546A (fr) * 1962-01-11 1963-10-15 Bobst Fils Sa J Procédé de fixation auxiliaire de l'outil d'une presse à platines en position de travail contre le sommier supérieur et dispositif pour la mise en oeuvre de ce procédé
CH373630A (fr) * 1962-02-12 1963-11-30 Bobst Fils Sa J Platine inférieure de presse
CH493313A (de) * 1968-02-03 1970-07-15 Roeder & Spengler Ohg Stanzform
SU523810A1 (ru) * 1974-11-28 1976-08-05 Воронежское Специальное Конструкторское Бюро Гидравлических И Механических Прессов Устройство дл креплени штампов к прессу
US4878407A (en) * 1986-05-01 1989-11-07 The Ward Machinery Company Vacuum die mount

Also Published As

Publication number Publication date
AU6374290A (en) 1991-04-18
CA2026324A1 (en) 1991-04-13
JPH03136797A (ja) 1991-06-11
BR9005087A (pt) 1991-09-17
DE69003218T2 (de) 1994-01-05
ATE94124T1 (de) 1993-09-15
JPH07110480B2 (ja) 1995-11-29
EP0422368A3 (en) 1991-06-12
EP0422368A2 (fr) 1991-04-17
CH682314A5 (enrdf_load_stackoverflow) 1993-08-31
AU641690B2 (en) 1993-09-30
US5104370A (en) 1992-04-14
CA2026324C (en) 1997-01-28
DE69003218D1 (de) 1993-10-14
DK0422368T3 (da) 1993-12-13
ES2044349T3 (es) 1994-01-01

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