EP1935820B1 - Machine de traitement de feuilles dotée d'un dispositif de freinage de feuilles et procédé de nettoyage d'un dispositif de freinage de feuilles - Google Patents

Machine de traitement de feuilles dotée d'un dispositif de freinage de feuilles et procédé de nettoyage d'un dispositif de freinage de feuilles Download PDF

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Publication number
EP1935820B1
EP1935820B1 EP07121391.2A EP07121391A EP1935820B1 EP 1935820 B1 EP1935820 B1 EP 1935820B1 EP 07121391 A EP07121391 A EP 07121391A EP 1935820 B1 EP1935820 B1 EP 1935820B1
Authority
EP
European Patent Office
Prior art keywords
sheet
cleaning
braking
suction
processing machine
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.)
Not-in-force
Application number
EP07121391.2A
Other languages
German (de)
English (en)
Other versions
EP1935820A2 (fr
EP1935820A3 (fr
Inventor
Reinhard Lappok
Peter Dr. Palmen
Guido Zanders
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1935820A2 publication Critical patent/EP1935820A2/fr
Publication of EP1935820A3 publication Critical patent/EP1935820A3/fr
Application granted granted Critical
Publication of EP1935820B1 publication Critical patent/EP1935820B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/088—Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
    • B65H2301/531—Cleaning parts of handling machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/35—Other elements with suction surface, e.g. plate or wall
    • B65H2406/351—Other elements with suction surface, e.g. plate or wall facing the surface of the handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/40—Fluid power drive; Fluid supply elements
    • B65H2406/42—Distribution circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/42—Die-cutting

Definitions

  • the invention relates to a sheet-processing machine with Bogenbrems- and stretching device according to the preamble of claim 1 and a method for cleaning the same according to the preamble of claim 4.
  • Sheet processing machines usually have a feeder, work stations, and a boom.
  • the sheet-processing machine may be, for example, sheet-fed presses or, in particular, further-processing machines, such as sheet punching and embossing machines.
  • From a stack of sheets in the feeder an uppermost sheet is separated and transferred to a transport system.
  • the transport system transports the sheet through the processing station to the delivery.
  • a well-known transport system in sheet punching and embossing machines are, for example, rotating gripper carriage. These each consist of a cross bar, are attached to the gripper, with which the sheet is gripped at its front edge and the ends are attached to a lateral chain hoist, which guides the gripper carriage through the machine.
  • gripper carriages are also used for sheet guiding, while the sheets are guided through the printing units by means of drums with gripper gripping system.
  • the sheet For the delivery of sheets in sheet processing machines and, for example, for processing in further processing machines, the sheet must be braked to a standstill. This happens on the one hand by braking the gripper carriage and also by sheet brakes.
  • Such a flat bed punch is for example from the DE 30 44 083 A1 known.
  • the two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surface sheets the benefits and at the same time pressed the necessary for clean folding grooves. In the subsequent breakout the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designatedWhentrenn arthritis.
  • the sheet must be braked from transport speed to standstill. Since the weakened from the previous blank sheet arrives at high speed in the stations, the sole deceleration of the front gripper bar can cause a postponement of its rear part. This should be done by additional Braking devices, which act on the surface of the sheet can be prevented.
  • the streamlined sheet can be edited with higher accuracy and stored better.
  • the DE 695 00 514 T2 shows, for example, a sheet brake device with brushes.
  • the brake brushes are aligned obliquely to the sheet transport direction and exercise by applying a light braking force on the bow.
  • the disadvantage is that this can cause marks on the sheet.
  • pneumatic sheet brakes are used, such as from DE 102 59 556 A1 and the US 3,972,523 A known. These are also in the immediate vicinity of the sheet and provide a negative pressure, which acts as a braking force on the moving past the pneumatic sheet brake arc.
  • Pneumatic sheet brakes have the advantage over mechanical sheet brakes that the sheet surface is not affected, and markings can be avoided.
  • the problem with pneumatic sheet brakes is that paper dust and powder settles in their pipes, channels and openings.
  • the transport and thus the processing speed of the sheet-processing machine can be reduced. This results in lower productivity. If the speed is not further reduced, or the full functionality of the brake despite reduced speed due to very heavy pollution is no longer guaranteed, the sheet brake must be cleaned. Since the cleaning must be done in machine downtime, thereby productivity is considerably reduced.
  • Object of the present invention is therefore to provide a mark-free sheet brake, which allows a higher machine productivity by reducing the machine downtime due to sheet brake cleaning.
  • This object is achieved by a pneumatic sheet brake with the features of claim 1 and a method for cleaning such a sheet brake according to claim 4.
  • An inventive sheet processing machine has at least one processing station.
  • a sheet punching and embossing machine for example, at least one stamping station and stamping station, breaking station and blanking station are present.
  • the transport system can be designed as a circulating chain system, are guided by the gripper bars.
  • the gripper bars have grippers which grasp the sheets at their leading edge and thus pull through the machine.
  • pneumatic sheet braking and stretching devices are located in the inlet area of the stations.
  • stripping station and depaneling station the devices are embedded directly in the tool or counter tool frame. As a result, the devices are in a plane parallel and at a minimum distance from the plane in which the sheets are transported by the conveyor through the processing stations, a so-called sheet conveying plane.
  • a sheet braking device in a plane parallel and in close proximity to the sheet conveying plane. Since the grippers release the bow in this station, it is particularly necessary to additionally decelerate the bow.
  • suction holes in the sheet braking and stretching device.
  • the sheets are moved by the transport system directly over the suction openings. If a vacuum prevails at the suction openings, the sheets moving over them are sucked in, thereby braked and at the same time stretched.
  • the Bogenbrems- and stretching device has a cleaning device. This has advantageously at least one port B, which can be acted upon with blown air and which is in communication with the Saugluftkanalsystem the Bogenbrems- and -straffvorraum and thus indirectly with the suction openings and the vacuum generators.
  • the port B of the device for cleaning the sheet braking and stretching device is acted upon with blowing air.
  • the blown air is blown into the suction air duct system and through the suction openings, thereby dissolving dirt particles and transporting them outwards. Due to the design, the vacuum generators are hardly cleaned.
  • port A of the vacuum generator and port B of the device for cleaning the Bogenbrems- and -stretching device simultaneously subjected to blowing air.
  • this has a control in which the above-described methods are deposited as cleaning programs and by which the means for cleaning the Bogenbrems- and - tightening device activated, ie, the admission of the connections can be controlled with blown air. Activation is carried out automatically at each machine standstill, for which a short cleaning program with a duration of several seconds is stored in the control. Another deposited multi-minute Cleaning program, which can be activated manually, is used for intensive cleaning of the device.
  • FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking and depositing sheets of paper, cardboard and the like is shown.
  • the punching and embossing machine 100 has a feeder 1, a punching station 2, a breaking station 3 and a boom 4, which are supported and enclosed by a common machine housing 5.
  • the sheets 6 are separated by a feeder 1 from a stack and fed and gripped by mounted on revolving chains 7 rapiers 8 at its front edge and intermittently pulled through the various stations 2, 3 and 4 of the punching and embossing machine 100 therethrough.
  • the punching station 2 consists of a lower table 9 and an upper table 10.
  • the lower table 9 is fixedly mounted in the machine frame and provided with a counter plate to the punching knife.
  • the upper table 10 is supported vertically movable back and forth.
  • the gripper bar 8 transports the sheet 6 from the punching and embossing station 2 in the subsequent Ausbrechstation 3, which is equipped with breakout tools.
  • the breaking station 3 the unwanted pieces of waste are pushed out of the sheet 6 downwards with the aid of the stripping tools, whereby the waste pieces 11 fall into a container-like carriage 12 inserted below the station.
  • the boom 4 may also include a pallet 13 on which the individual sheets are stacked in the form of a stack 14, so that after reaching a certain stack height, the pallets stacked with the Bows 14 can be moved away from the area of the punching and embossing machine 100.
  • the chains 7 carry a plurality of gripper bars 8, for example. Here are 8, so that multiple sheets 6 can be processed simultaneously in the various stations 2, 3 and 4.
  • the sheet punching and embossing machine has a machine control 15 with control panel and display.
  • this controller 15 By this controller 15 and the Bogenbrems- and -strreckvorraum is driven.
  • a pneumatic sheet braking and stretching device 20 is shown.
  • the mounting plate 24, which is part of the Bogenbrems- and -recking device 20 has holes for screwing the device with the tool frame of the processing stations 3, 4 of the sheet punching and embossing machine 100.
  • the sheet brake and -stretching device 20 has two ports, a port A, via which the vacuum generator 22 can be acted upon with a blown air b, and a port B of the device for cleaning the Bogenbrems- and -stretching device 20, which can also be acted upon with a blown air b.
  • An arc 6, which is to be braked and stretched by the Bogenbrems- and -strreckvortechnisch 20 is for Veranschlauichung the sheet position relative to Bogenbrems- and -strreckvortechnisch 20 in Fig. 2a and 2 B shown. For clarity, grab lines 8 were not shown.
  • Fig. 2b is the air flow through the Saugluftkanalsystem 23 and the suction openings 21 indicated by arrows.
  • the Saug povertykanalsystem 23 serves to connect the suction openings 21 with the vacuum generators 22 and is in the sectional views Fig. 2c and Fig. 2d represented by the Bogenbrems- and stretching device.
  • the connection A of the vacuum generator 22 is acted upon by a blown air b.
  • the blown air b flows through the vacuum generator 22, whereby a negative pressure is generated due to the Venturi effect, which is provided via the Saugluftkanalsystem 23 at the suction ports 21. Due to the negative pressure, air is sucked into the suction openings 21 and this suction air s sucks a sheet 6 moved over it and brakes it.
  • Fig. 3a shows the Bogenbrems- and stretching device 20 with the air guide in cleaning the device.
  • the Bogenbrems- and stretching device 20 is then cleaned when the punching and embossing machine 100 is not in operation, so if no sheet 6 is to be braked.
  • the connection B of the device for cleaning the Bogenbrems- and -stretching device 20 is acted upon by a blown air b. Via a channel 25, the blowing air b is passed into the Saugluftkanalsystem 23, blows this and thereby removes dust and dirt particles. The blowing air escapes through the suction openings 21.
  • the port B of the device for cleaning the Bogenbrems- and -strreckvorides 20 and the terminal A of the vacuum generator 22 can be acted upon simultaneously with a blown air b (in Fig. 3a not shown).
  • vacuum generator, Saugluftkanalsystem and suction openings of a blast air b flows through and cleaned.
  • the connection of the terminal B of the device for cleaning the Bogenbrems- and -strreckvortechnisch 20 to the Saugluftkanalsystem 23 is in the sectional view Fig. 3b
  • a channel 25 connects port B and suction ports 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Cleaning In General (AREA)

Claims (5)

  1. Machine de traitement de feuilles, en particulier une machine à gaufrer et à découper des feuilles (100) ayant au moins une station de traitement (2, 3) et une flèche (4), un système de transport (7),pour le guidage de feuille et un dispositif pneumatique d'étirage et de freinage de feuille (20) se trouvant dans la flèche (4) et/ou dans un plan parallèlement et à proximité immédiate du plan de transport de la feuille et présentant des ouvertures d'aspiration (21) orientées vers le plan de transport de feuille où règne une dépression, la dépression étant générée par des générateurs de dépression (22) qui subissent l'impact de l'air de soufflage (b) par au moins un raccord (A) avec l'air de soufflage (b), et la dépression étant transmise par un système de canaux d'air d'aspiration (23) pour les ouvertures d'aspiration (21) caractérisée en ce
    que le dispositif d'étirage et de freinage (20) possède un dispositif pour le nettoyage, qui présente au moins un raccord (B), qui peut être soumis à de l'air de soufflage (b) et qui est relié par des canaux au système de canaux d'air d'aspiration (23) du dispositif d'étirage et de freinage de feuille (20) pour purger le système de canaux d'air d'aspiration (23) et les ouvertures d'aspiration (21).
  2. Machine de traitement de feuilles selon la revendication 1, caractérisée en ce
    que la machine de traitement de feuilles comporte une commande (15) pour activer le dispositif en vue du nettoyage du dispositif d'étirage et de freinage de feuille (20).
  3. Procédé de nettoyage d'un dispositif d'étirage et de freinage de feuille pneumatique (20) d'une machine de traitement de feuilles selon la revendication 1, caractérisé par l'étape de procédé consistant à purger le système de canaux d'air d'aspiration (23), les ouvertures d'aspiration (21) et les générateurs de dépression (22) par impact simultané avec l'air soufflé (b) d'au moins un raccord (B) du dispositif d'étirage et de freinage de feuille (20).
  4. Procédé de nettoyage d'un dispositif d'étirage et de freinage de feuille (20) d'une machine de traitement de feuilles selon la revendication 1, caractérisé par les étapes de procédé par le système de canaux d'air d'aspiration (23), des ouvertures d'aspiration (21) et ledit générateur de vide (22) par l'actionnement simultané du générateur de dépression (22) et d'su moins une borne (A) du dispositif d'étirage et de freinage de feuille (20) avec l'air de soufflage (b).
  5. Procédé de nettoyage d'un dispositif d'étirage et de freinage de feuille pneumatique (20) selon la revendication 1, caractérisé par les étapes de procédé
    a) nettoyage selon la revendication 4
    b) nettoyage selon la revendication 5.
EP07121391.2A 2006-12-18 2007-11-23 Machine de traitement de feuilles dotée d'un dispositif de freinage de feuilles et procédé de nettoyage d'un dispositif de freinage de feuilles Not-in-force EP1935820B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006059768 2006-12-18

Publications (3)

Publication Number Publication Date
EP1935820A2 EP1935820A2 (fr) 2008-06-25
EP1935820A3 EP1935820A3 (fr) 2011-07-06
EP1935820B1 true EP1935820B1 (fr) 2014-04-16

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ID=39212210

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Application Number Title Priority Date Filing Date
EP07121391.2A Not-in-force EP1935820B1 (fr) 2006-12-18 2007-11-23 Machine de traitement de feuilles dotée d'un dispositif de freinage de feuilles et procédé de nettoyage d'un dispositif de freinage de feuilles

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108367876A (zh) * 2015-10-13 2018-08-03 鲍勃斯脱梅克斯股份有限公司 用于处理纸张元件的装置和方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101453696B1 (ko) * 2010-06-23 2014-10-22 봅스트 맥스 에스에이 모방 절단기의 작업 스테이션용 유지 장치
EP2844596B1 (fr) * 2012-05-03 2016-06-01 Bobst Mex Sa Dispositif de freinage d'un element plat en forme de feuille et procede de nettoyage d'un tel dispositif
DE102013017400B4 (de) * 2013-10-18 2015-05-28 Thomas Bühl Zweiteiliger Reinigungs- und Polierstempel
CN113905965A (zh) 2019-06-05 2022-01-07 鲍勃斯脱梅克斯股份有限公司 吸力制动器、具有这种吸力制动器的片材输送机以及向移动的片材施加减速力的方法
EP4259393B1 (fr) 2020-12-10 2024-10-09 Bobst Mex Sa Dispositif de positionnement et ensemble de positionnement pour le maintien d'une pièce plate et flexible, et machine de traitement de matériaux en feuilles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779545A (en) * 1971-07-14 1973-12-18 Roland Offsetmaschf Delivery arrangement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2453753C3 (de) * 1974-11-13 1982-05-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogenbremse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779545A (en) * 1971-07-14 1973-12-18 Roland Offsetmaschf Delivery arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108367876A (zh) * 2015-10-13 2018-08-03 鲍勃斯脱梅克斯股份有限公司 用于处理纸张元件的装置和方法

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Publication number Publication date
EP1935820A2 (fr) 2008-06-25
EP1935820A3 (fr) 2011-07-06

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