EP0763407A1 - Ausstattung zum Trennen von geschnittenem Material bei Schneidemaschinen für Plattenelemente - Google Patents

Ausstattung zum Trennen von geschnittenem Material bei Schneidemaschinen für Plattenelemente Download PDF

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Publication number
EP0763407A1
EP0763407A1 EP96111744A EP96111744A EP0763407A1 EP 0763407 A1 EP0763407 A1 EP 0763407A1 EP 96111744 A EP96111744 A EP 96111744A EP 96111744 A EP96111744 A EP 96111744A EP 0763407 A1 EP0763407 A1 EP 0763407A1
Authority
EP
European Patent Office
Prior art keywords
bands
longitudinal
pressers
orifices
tool
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.)
Granted
Application number
EP96111744A
Other languages
English (en)
French (fr)
Other versions
EP0763407B1 (de
Inventor
Charly Varidel
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
Publication of EP0763407A1 publication Critical patent/EP0763407A1/de
Application granted granted Critical
Publication of EP0763407B1 publication Critical patent/EP0763407B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/1881—Means for removing cut-out material or waste using countertools
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool
    • Y10T225/379—Breaking tool intermediate spaced work supports
    • Y10T225/386—Clamping supports
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183—Product mover including gripper means
    • Y10T83/2185—Suction gripper

Definitions

  • the present invention relates to a device for separating poses within a machine for cutting sheet elements such as, for example, sheets of paper or cardboard.
  • Each machine is, among other things, used to cut from each sheet one or more poses, also called formats, which, after folding and gluing, can be transformed into boxes.
  • Each pose generally includes the six faces of a box, some edges being completed with gluing or closing tabs.
  • Such a machine usually comprises first of all an introduction station in which the sheets, possibly pre-printed, are apprehended one by one from the top of a stack to be sent to a margin table where they are placed in position against front and side cleats.
  • the sheet can then be gripped at its front edge by a series of clamps mounted along a transverse bar, each end of which is attached to a lateral chain train carrying the bar, therefore the sheet, to the following processing stations.
  • the sheet is thus first transported to a station for cutting the blanks according to a desired format, these blanks no longer being retained on the sheet and / or between them only by a few bridges of material judiciously arranged.
  • This station usually comprises a platen press, the stationary upper platen of which carries a plate provided with a plurality of straight and curved longilinear knives. If desired, the cutting station can be preceded by a printing station also with platinum.
  • the sheet is normally then taken to an ejection station where the waste, that is to say the unused areas of the sheet between the tabs or between the formats, are pinched by upper and lower needles to be drawn towards the down in a bin.
  • the sheet is then brought into the blanking station, where the attachment points between the blanks and the sheet are broken by means of a male upper flat tool descending into a female lower flat tool, so as to release each poses falling on top of an underlying stack.
  • the residual sheet is finally drawn into an exit station where it is released by the clamp bar.
  • the sheet is brought flat on a lower tool in the form of a perforated horizontal board around the periphery of the blanks to be ejected.
  • this lower tool is therefore in the form of a grid, each longitudinal and transverse bar of which reproduces the shape of the intermediate strips separating the poses from one another.
  • the upper tool intended to be lowered sequentially into the lower tool comprises on the one hand pushers, that is to say wooden or foam pads, each fixed on the tool above a pose from which it takes the slightly smaller outline.
  • This upper tool also comprises pressers, that is to say bars or pots situated respectively above the intermediate strips and mounted on elastic supports so as to press each strip against its bar in correspondence with the grid of the lower tool during separation of the poses.
  • the residual sheet after the separation of the poses is also in the form of a grid of paper or cardboard initially supported by each of the bars of the tool inferior.
  • the transverse intermediate bands in the direction of movement are no longer supported except at their ends and hang in their middle downwards.
  • the central arrows can reach 1 or 2 cm, causing these parts to subsequently hook onto the other bars of the grid of the lower tool.
  • the residual leaves then tend to tear and fall back on the stacks of poses in an inappropriate manner.
  • the object of the present invention is an improvement of the separation equipment which makes it possible to obviate the problem of the rupture of the residual sheet during its removal.
  • the design of this improvement must however remain simple in order to have reliable operation and a low cost of production.
  • the longitudinal pressers are modified so as to be able to take upwards, during the ascent of the upper tool, between two thirds and four fifths upstream of the residual sheet.
  • the low points of the transverse bending intermediate bands are then clearly above the transverse bars of the lower tool.
  • the risk of collision between the residual sheet and the lower grid tool has been eliminated in a simple and elegant manner.
  • the depression is adjusted to a value just sufficient to only compensate for the weight of the sheet without creating an undue friction force which could cause a rupture at the level of the clamp bar.
  • the effect of this depression decreases as the sheet is withdrawn by successive opening of the orifices, so as to always exert only a lifting force that is just sufficient.
  • the pressers located above the longitudinal intermediate bands and lateral bands are in the form of longitudinal cylinders closed at their two ends, of lengths substantially identical to those of the tools, and whose flat undersides have a series of suction ports.
  • the use of cylinder as longitudinal pressers greatly simplifies the connection of the orifices to the source of vacuum.
  • the flat lower faces constitute homogeneous surfaces against which the longitudinal strips of the residual sheet slide when it is withdrawn.
  • the distance (a) between the downstream end of the pressure cylinder and the start of the series of orifices is between a quarter and a third of the length of the cylinder. This makes it possible to provide a softened curvature between the raised sheet and the gripper bar located slightly above the lower tool.
  • the series of orifices provided in the two pressure rollers situated above each of the two lateral bands are offset inwards relative to the center line of the lower face. It has in fact been found that the lowering of the transverse bands causes a tightening of the residual sheet. This offset of the two series of orifices on each side makes it possible to ensure that the two lateral bands are always correctly understood.
  • a series comprises a dozen orifices with a diameter of the order of 1 millimeter and spaced from 5 to 15 centimeters.
  • a reservoir-distributor in the form of a cylinder closed at its two ends is arranged transversely little above the longitudinal pressure cylinders, and is connected on the one hand to a vacuum pump and on the other hand to each pressure cylinders by a flexible hose, for example describing a loop.
  • This arrangement is relatively simple to perform, and allows the installation of flexible supply pipes to compensate for the relative movements of the pressure rollers relative to the upper tool, these pipes being easy to access for monitoring and maintenance.
  • the terms upstream and downstream will be used with reference to the direction of movement of the leaves, that is to say that a room on the upstream side is close to the entrance to the station. , while a part on the downstream side is close to the outlet.
  • the expressions longitudinal / transverse and left / right are to be considered with respect to the direction of travel of the strip, the left side being usually the driver side and the right side the side opposite to the driver of the machine.
  • the installation separation equipment comprises a lower tool 10 and an upper tool 20.
  • the lower tool 10 is based on a grid tool 12 in the form of a board usually made of wood in which a plurality of openings 14 has been provided corresponding to the implantation of the poses cut from a sheet in a "double" mode. -chopped off".
  • the poses are surrounded by two lateral bands, a rear band and a frontal band taken up by the drive clamps, and these poses are separated from each other by longitudinal and lateral intermediate bands of minimum width 5 mm. Therefore, the tool 12 is itself in the form of a grid, the transverse bars 13 and longitudinal 15 substantially resume the shape of the corresponding intermediate strips, but having a slightly smaller width.
  • the grid tool 12 is supported by a plurality of cross-supports 16 located under the front bar, under each of the transverse bars 13 and under the rear bar. These cross-supports 16 themselves rest on a removable lower frame 18. Alternatively, these cross-supports 16 are an integral part of the frame 18.
  • these frames and crosspieces are made from metal profiled bars, preferably aluminum for their relative lightness.
  • the higher than wide profile of these profiles provides great rigidity in the vertical direction of the tool 10.
  • the external faces of the upstream and downstream crosspieces of the frame have a groove making it possible to exit and then reinstall this tool in the station by passing it through a side window and by sliding two upstream and downstream gibs belonging to the station's fixing mechanism.
  • the frame is further completed with its four points of centering studs with conical part and receiving locking pins. This lower tool 10 can thus easily be removed to change the grid tool 12 as a function of the new installation layout of the following production series.
  • the upper tool 20 also includes a rectangular frame 22 stiffened by side members 24, both also made from particularly rigid profiles in the vertical direction.
  • Each pusher 28 is in vertical correspondence with an opening 14 of the lower grid tool 12.
  • These pushers 28 are in the form of wooden plates or rigid elastomer blocks, possibly hollowed out in the middle, but whose outline takes up that of one of the poses cut from the sheet, therefore the outline of its aperture 14 in correspondence.
  • the longitudinal pressers 36 are connected to the side member 24 of the frame 22 by a pair of elastic telescopic supports 39: an upstream and a downstream.
  • a support 39 may be a rod whose lower end is fixed to the presser 36 and whose upper end slides in a lug connected to the crosspiece 24.
  • a spring coaxial with the rod acts between the presser 36 and the lug of such so as to compress when this presser approaches its spar.
  • the length of the rod is such that the face bottom of the presser 36 is located slightly below, on the order of 5 to 10 mm, from the underside of the pushers 28.
  • the transverse pressers 40 are mounted in a similar manner to the spar 24 by elastic telescopic supports 42. These pressers 36 and 40 being located between the pushers 28, they are therefore found in vertical correspondence respectively with the bars 15 and 13 of the grid tool 12.
  • the longitudinal pressers 36 have a series of suction orifices 38.
  • these pressers 36 are produced by means of tubes of rectangular section, and closed at their ends. The interior of each of these tubes is connected by a flexible tube 34 to a reservoir-distributor 30 itself connected to a vacuum pump by a supply duct 32.
  • This reservoir-distributor 30 is in the form of a tube closed at its two ends and arranged transversely to the longitudinal pressers 36, and this between the pushers 28 and the side members 24.
  • the tubes 34 are made of flexible material, and can even take the form of a loop, so as to deform easily during the movement of the longitudinal pressers 36 relative to the spar 24.
  • each longitudinal presser 36 has the same series of a dozen suction orifices 38, each orifice having a diameter of the order of 1 mm and being spaced apart of the order of 5 to 15 cm from each other.
  • the vacuum applied in the reservoir-distributor 30 is such that, taking into account the pressure drops in the flexible tubes 34, a vacuum of the order of 500 to 700 millibars is obtained at the suction orifices 38.
  • the series of orifices 38 start from the downstream end of the longitudinal pressers 36 only from a distance (a) of the order of a third, or even a quarter, of the length of said presser 36.
  • FIGS. 2a to 2c The operation of the equipment for separating the blanks according to the invention will be better understood on examining FIGS. 2a to 2c, in which the same reference numbers in FIG. 1 have been reported.
  • FIG. 2a illustrates how, the upper tool 20 being raised, a gripper bar 5 brings a sheet 1 on top of the fixed lower tool 10, and more particularly on the top of the grid tool 12.
  • the function suction of the longitudinal pressers 36 has no effect at this time.
  • FIG. 2b illustrates how the upper tool 20 is lowered in the lower tool 10 until the pushers 28 enter the openings 14. Just before this return of the pushers, the longitudinal and transverse pressers 36 have tightened the intermediate bands against the bars in correspondence with the grid tool 12. The penetration of the pushers 28 into the openings 14 causes the immediate breaking of the material bridges connecting each pose to the sheet. This break is accompanied by an ejection of the poses 3 downwards which fall squarely on the top of their respective stack 7.
  • FIG. 2c illustrates the ascent of the upper tool 20 and the departure of the gripper bar 5 to pull the residual sheet 1 'towards the output station.
  • suction orifices 38 means that atmospheric pressure presses this perforated sheet 1 'against the longitudinal pressers 36, this sheet therefore rising with the upper tool 20.
  • the transverse intermediate strips 2 in suspension are then found clearly above the transverse bars 13 with which they can no longer interfere.
  • the residual sheet 1 ′ therefore slides along the raised longitudinal pressers 36, the upstream orifices being re-opened as the sheet advances, which automatically readjusts the effect of the pressure atmospheric on the downstream part of this residual leaf.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Prostheses (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP96111744A 1995-08-04 1996-07-22 Ausstattung zum Trennen von geschnittenem Material bei Schneidemaschinen für Plattenelemente Expired - Lifetime EP0763407B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH02262/95A CH690844A5 (fr) 1995-08-04 1995-08-04 Equipement de séparation de poses au sein d'une machine de découpe d'éléments en plaque .
CH226295 1995-08-04
CH2262/95 1995-08-04

Publications (2)

Publication Number Publication Date
EP0763407A1 true EP0763407A1 (de) 1997-03-19
EP0763407B1 EP0763407B1 (de) 2001-12-19

Family

ID=4229666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111744A Expired - Lifetime EP0763407B1 (de) 1995-08-04 1996-07-22 Ausstattung zum Trennen von geschnittenem Material bei Schneidemaschinen für Plattenelemente

Country Status (14)

Country Link
US (1) US5810233A (de)
EP (1) EP0763407B1 (de)
JP (1) JP2866061B2 (de)
KR (1) KR100206078B1 (de)
CN (1) CN1058208C (de)
AT (1) ATE211048T1 (de)
AU (1) AU675401B1 (de)
BR (1) BR9603275A (de)
CA (1) CA2182639C (de)
CH (1) CH690844A5 (de)
DE (1) DE69618116T2 (de)
DK (1) DK0763407T3 (de)
ES (1) ES2169177T3 (de)
TW (1) TW436421B (de)

Cited By (1)

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EP4725667A1 (de) 2024-10-04 2026-04-15 Olgierd Bratek Vorrichtung zum trennen von zuschnitten von abfall aus einem gestanzten bogen

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CN101870182B (zh) * 2010-06-09 2011-12-14 昆明矢量科技开发有限公司 模切纸品清废分离一体机
IT1401265B1 (it) * 2010-08-06 2013-07-18 Gallucci Dispositivo per lo scarico, da un piano di lavoro, di articoli piani nei quali sono ricavate, mediante taglio e/o incisione, porzioni su cui sono riprodotti disegni e/o scritte
CN102601818A (zh) * 2012-03-22 2012-07-25 瑞安市东腾机械有限公司 对模切后的纸张进行废边清理的方法及实现该方法的设备
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JP6117755B2 (ja) * 2014-09-22 2017-04-19 ファナック株式会社 予め切断された基板の引っ掛かりを解除する装置、ロボット、およびロボットシステム
CN104827517A (zh) * 2015-05-05 2015-08-12 佛山华工祥源环保包装有限公司 一种吸附式飞边裁切去除装置及其去飞边工艺
CN106695983A (zh) * 2016-12-30 2017-05-24 重庆皖渝纸制品有限公司 纸板余料分离装置
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CN108996214B (zh) * 2018-06-29 2023-08-29 苏州富强科技有限公司 一种分离结构
JP6762446B1 (ja) * 2020-02-20 2020-09-30 株式会社スリーブイ ブランキング下型、下型基板、ブランキング型、及び、下型基板の交換方法
CN115042241B (zh) * 2022-07-07 2024-03-19 湖北纽凯伦轨道交通新材料有限公司 一种高效性防水板的分切装置
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CN115741863B (zh) * 2022-11-17 2025-11-14 义乌清越光电科技有限公司 一种基板加工设备
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US12194706B2 (en) 2023-02-03 2025-01-14 Blanking Systems, Inc. Presser assembly with magnetic biasing

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Also Published As

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KR970010034A (ko) 1997-03-27
JPH09117893A (ja) 1997-05-06
TW436421B (en) 2001-05-28
JP2866061B2 (ja) 1999-03-08
KR100206078B1 (ko) 1999-07-01
ES2169177T3 (es) 2002-07-01
CA2182639A1 (en) 1997-02-05
DK0763407T3 (da) 2002-04-15
DE69618116T2 (de) 2002-07-04
BR9603275A (pt) 1998-05-12
AU675401B1 (en) 1997-01-30
CN1058208C (zh) 2000-11-08
US5810233A (en) 1998-09-22
DE69618116D1 (de) 2002-01-31
CA2182639C (en) 2000-02-29
CN1151929A (zh) 1997-06-18
EP0763407B1 (de) 2001-12-19
CH690844A5 (fr) 2001-02-15
ATE211048T1 (de) 2002-01-15

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