EP0824071A1 - Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn - Google Patents
Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn Download PDFInfo
- Publication number
- EP0824071A1 EP0824071A1 EP97110608A EP97110608A EP0824071A1 EP 0824071 A1 EP0824071 A1 EP 0824071A1 EP 97110608 A EP97110608 A EP 97110608A EP 97110608 A EP97110608 A EP 97110608A EP 0824071 A1 EP0824071 A1 EP 0824071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pneumatic cylinder
- compressed air
- roller
- expansion space
- web
- 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
Links
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
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
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/025—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs responsive to web breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/04—Tripping devices or stop-motions
- B41F33/06—Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/18—Web break detection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/34—Pressure, e.g. fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2555/00—Actuating means
- B65H2555/10—Actuating means linear
- B65H2555/11—Actuating means linear pneumatic, e.g. inflatable elements
Definitions
- the invention relates to a device for catching a cracked Printing material web with an area susceptible to web breaks, preferably behind the last printing unit, a web-fed rotary printing press arranged, by means of a drive device drivable roller to which a freely rotatable rotor arrangement can be pressed is arranged on a movable in the machine frame and by means of an actuating device that can be activated in the event of a web break drivable carrier is added.
- a device of this type is for example from DE-C 38 22 496 known.
- the rotor engages containing carrier to a spring assembly that is in the waiting position preloaded and secured by a bolt, which in the event of a web break is triggered.
- the spring assembly has a comparatively large one Length, which leads to a large height and thus a bulky Construction results.
- Parts required which results in a high effort and a high one Susceptibility to malfunction.
- Another, very special disadvantage of the known Arrangement can be seen in the fact that the rotor arrangement during the entire catching process with the full, from the spring package Exerted force required to achieve high acceleration after unlocking must be comparatively large, to the roller is pressed. This leads to high wear of the rotor elements and at the same time to signs of flexing in the area of normally existing rubber cover from the rollers forming the rotor assembly, what to a high energy requirement of the drive device driving the roller leads.
- the actuating device at least one Contains pneumatic cylinder, which is used to position the rotor assembly on the Roller can be acted upon with high pressure and the rotor arrangement reduced pressure on the roller.
- the expansion space with a ventilation outlet can also be advantageous be provided, which is controllable by means of a valve which adjusts it accomplished catching process with a predetermined lateral delay the printing press comes to a standstill. This leads to a ventilation of the Expansion space and the cylinder. This ventilation makes it easier Return the carrier to the waiting position. This can be useful a return spring arrangement can be provided, which after Bleeding automatically causes the reset.
- a compressed air reservoir is arranged upstream of the pneumatic cylinder is the one with a check valve and a pressure regulator provided supply line is connected to a compressed air source.
- Compressed air source can advantageously be a rule existing compressed air network can be tapped. Pressure fluctuations in Compressed air network with the above measures of pressure accumulator kept away.
- the compressed air reservoir upstream of the pneumatic cylinder ensures that in any case sufficient pressure energy for safe Operation of the pneumatic cylinder is available. The above Measures therefore ensure a high level of security.
- the sponsor can via toggle lever arrangements on one of the side frame walls attached, overlapping the roller, supporting the pneumatic cylinder Traverse to be hung.
- the Traverse is usually designed as a hollow profile. This opens up more advantageously Way the possibility of the compressed air reservoir and the Integrating expansion space into the crossbar, which is a special simple and compact design results.
- the drawing shows a view of a device according to the invention schematically shown compressed air paths.
- the web catching device shown in the drawing contains one Machine stand consisting of two side walls 1 and connecting them Truss 2 exists.
- the beam forming the support 5 is symmetrical to one by two Middle longitudinal plane arranged toggle lever assemblies 8 on the top, the Roll 3 crossbar 2 suspended from the machine stand.
- the two toggle lever arrangements 8 are with opposing rods 9 with a crank 10 connected to one on the upper cross member 2 attached bracket 11 is mounted and by means of a pneumatic cylinder 12 is actuated.
- the pneumatic cylinder acting on the one hand on the crank 10 On the other hand, 12 is also supported on the upper cross member 2.
- the pneumatic cylinder 12 can be pressurized with compressed air.
- Compressed air sources can be the compressed air network usually available in printing shops be tapped.
- To be independent of network fluctuations To ensure compressed air supply to the pneumatic cylinder 12 is this Upstream of the pressurized air reservoir 13, which via a supply line provided with a check valve 14 and a pressure regulator 15 16 connected to the compressed air network indicated at 17 is.
- the compressed air reservoir 13 is here in the upper cross member 2 of the machine stand integrated. In the example shown, the compressed air reservoir is 13 a manometer 18 assigned, whereby a visual inspection of the pending pressure is possible.
- the expansion space 19 is here also in the upper cross member 2 of the Integrated machine stand.
- To form the mentioned traverse 2 takes place therefore expedient to use a hollow profile. This is at its ends closed by flanges 20 with which the traverse 2 to the Side walls 1 is attached.
- the pneumatic cylinder 12 is in the example shown as a single-acting Cylinder formed.
- the return movement of the pneumatic cylinder 12 and thus the carrier 5 with the rollers 6 is here by a return spring arrangement 22 causes.
- To reset the pneumatic cylinder 12 and the associated expansion space 19 are vented.
- the Expansion space 19 is provided with a vent line 23, which means of a switching valve 4 is controllable. This is controlled so that it after the end of a catching process, the vent line 23 opens. This switching operation is expediently carried out about 15 seconds after the Printing machine braked to a standstill during the catching process has come.
- Multi-way valve designed further control valve 25 is provided.
- This has three connections 26,27,28, of which the two connections 26 and 27 alternatively connectable to the connection 28 or jointly opposite the port 28 can be blocked.
- the connection 26 is via a associated line 26a connected to the compressed air reservoir 2.
- Of the Terminal 27 is connected to the expansion space by means of an associated line 27a 19 connected.
- the connection 28 is connected to the Pneumatic cylinder 12 connected as a single-acting cylinder only has a connection line.
- a control device 29 is provided, which is not described in detail here shown web break switch signals and from one of the Machine-running sensor detects processed signals, such as is indicated by input arrows.
- the control valves 24 and 25 become so by means of the control device 29 controlled that in the waiting position shown all connections are closed. If a web break is reported, the control valve 25 controlled so that the lines 26a and 28a connected to each other become, whereby a compressed air supply to the pneumatic cylinder 12th from the compressed air reservoir 13. As soon as the rollers 6 on the roller 3 impinge, the connection of the lines are by means of the control valve 25 26a and 28a interrupted and a connection between the lines 27a and 28a produced, whereby the pneumatic cylinder 12 with the Expansion space 19 is connected.
- the time that the device takes until the rollers 6 onto the roller 3 can easily be determined by experiment.
- the one mentioned above Switching process for connecting the pneumatic cylinder 12 with the Expansion space 19 can therefore simply with a corresponding time Delay compared to the first switching operation Compressed air is applied to the pneumatic cylinder 12.
- This can the control device 29 simply with a suitable delay element be provided.
- the rollers 6 to strike the roller 3 by means of a arranged in the area of the carrier 5, etc. suitable sensor and the control device 29 to supply the corresponding signal.
- the control device 29 When the catching process is finished, i.e. when the printing press Has come to a standstill, the control device 29 receives a corresponding one Signal. With a time delay of about 15 seconds after standstill the printing machine, the control valve 24 is controlled so that the Vent line 23 is opened. The control valve 25 remains in the existing position in which the connection between the pneumatic cylinder 12 and the expansion space 19 opened and the connection between the pneumatic cylinder 12 and the pressure accumulator 13 is closed. It there is a venting of the pneumatic cylinder 12 and Expansion space 19. This eliminates the force acting on the carrier 5, with which the return spring assembly 22 can operate.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
Claims (10)
- Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn mit einer in einem für Bahnrisse anfälligen Bereich, vorzugsweise hinter dem letzten Druckwerk, einer Rollenrotationsdruckmaschine angeordneten, mittels einer Antriebseinrichtung (4) antreibbaren Walze (3), an die eine frei drehbare Rotoranordnung (6) andrückbar ist, die auf einem bewegbar im Maschinengestell (1) angeordneten und mittels einer im Falle eines Bahnrisses aktivierbaren Betätigungseinrichtung bewegbaren Träger (5) aufgenommen ist, dadurch gekennzeichnet, daß die Betätigungseinrichtung wenigstens einen Pneumatikzylinder (12) enthält, der zum Anstellen der Rotoranordnung (6) an die Walze (3) mit hohem Druck beaufschlagbar ist und der die Rotoranordnung (6) mit reduziertem Druck an die Walze (3) andrückt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der in Antriebsrichtung mit Druckluft beaufschlagbare Pneumatikzylinder (12) nach erfolgter Durchführung eines Antriebshubs beaufschlagungsseitig absperrbar und mit einem Ausdehnungsraum (19) verbindbar ist, dessen Volumen vorzugsweise dem Hubvolumen des Pneumatikzylinders (12) entspricht.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Ausdehnungsraum (19) mit einem Entlüftungsausgang (23) versehen ist, der mittels eines Ventils (24) kontrollierbar ist, das ihn nach erfolgtem Fangvorgang, vorzugsweise mit vorgegebener zeitlicher Verzögerung gegenüber dem Stillstand der Druckmaschine, öffnet.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Verbindung zwischen Pneumatikzylinder (12) und Ausdehnungsraum (19) nach erfolgter Entlüftung unterbrechbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Träger (5) mittels des Pneumatikzylinders (12) entgegen der Kraft wenigstens einer Rückstellfeder (22) verschiebbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß dem Pneumatikzylinder (12) beaufschlagungsseitig ein Druckluftspeicher (13) vorgeordnet ist, der über eine mit einem Rückschlagventil (14) und vorzugsweise einem Druckregler (15) versehene Versorgungsleitung (16) mit einer Druckluftquelle (17) verbunden ist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der Druckspeicher (13) und/oder der Ausdehnungsraum (19) in wenigstens ein Teil des Maschinengestells eingebaut sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Träger (5) über Kniehebelanordnungen (8) an einer an seitlichen Gestellwänden befestigten, die Walze (3) übergreifenden Traverse (2) aufgehängt ist, an der auch der Pneumatikzylinder (12) abgestützt ist und die vorzugsweise als an ihren Enden abgedeckeltes Hohlprofil ausgebildet ist, dessen Innenraum durch eine Zwischenwand (21) in den Druckluftspeicher (13) und den Ausdehnungsraum (19) unterteilt ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Eingang des Pneumatikzylinders (12) mittels eines als Mehrwegeventil ausgebildeten, im Falle eines Bahnrisses betätigbaren Steuerventils (25) alternativ mit dem Druckluftspeicher (13) oder dem Ausdehnungsraum (19) verbindbar bzw. absperrbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet, durch eine Steuereinrichtung (29) zur Steuerung der Ventile (24, 25).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19629071 | 1996-07-18 | ||
DE19629071A DE19629071C1 (de) | 1996-07-18 | 1996-07-18 | Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0824071A1 true EP0824071A1 (de) | 1998-02-18 |
EP0824071B1 EP0824071B1 (de) | 2000-06-14 |
Family
ID=7800224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110608A Expired - Lifetime EP0824071B1 (de) | 1996-07-18 | 1997-06-28 | Vorrichtung zum Fangen einer gerissenen Bedruckstoffbahn |
Country Status (4)
Country | Link |
---|---|
US (1) | US5931092A (de) |
EP (1) | EP0824071B1 (de) |
JP (1) | JPH10114056A (de) |
DE (2) | DE19629071C1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016385A1 (de) * | 1996-10-11 | 1998-04-23 | Koenig & Bauer Ag | Festhaltevorrichtung für einen druckträger |
DE10159937B4 (de) * | 2001-12-06 | 2007-12-13 | Man Roland Druckmaschinen Ag | Rückhaltevorrichtung zum Klemmen einer in einer Rollenrotationsdruckmaschine laufenden Bedruckstoffbahn |
DE102004014777B4 (de) * | 2004-03-26 | 2014-04-10 | Baldwin Germany Gmbh | Bahnfangvorrichtung einer Rollenrotations-Druckmaschine |
JP2007307889A (ja) * | 2006-04-19 | 2007-11-29 | Komori Corp | 印刷機のウェブ検出装置 |
WO2008156864A1 (en) * | 2007-06-21 | 2008-12-24 | Rodriguez Peter A | Torn paper web capture system |
DE102009000754A1 (de) * | 2009-02-11 | 2010-08-12 | Koenig & Bauer Aktiengesellschaft | Bahnfangvorrichtungen einer Druckmaschine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3822496A1 (de) * | 1988-07-02 | 1990-01-04 | Kotterer Grafotec | Vorrichtung zum fangen einer gerissenen bedruckstoffbahn |
DE4201481A1 (de) * | 1992-01-21 | 1993-07-22 | Heidelberger Druckmasch Ag | Einrichtung zur handhabung von materialbahnen in verarbeitungsmaschinen |
EP0616966A1 (de) * | 1993-03-25 | 1994-09-28 | Baldwin Web Controls (A Division Of Baldwin Graphic Systems, Inc.) | Vorrichtung zum Verhindern des Aufwickelns in Bahndruckmaschinen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846060A (en) * | 1988-07-25 | 1989-07-11 | Iotec Manufacturing, Inc. | Printing web tensioning system |
DE4029366C2 (de) * | 1990-09-15 | 1995-07-06 | Kotterer Grafotec | Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn |
DE9317308U1 (de) * | 1993-11-11 | 1995-03-16 | Brugger, Klaus, Dipl.-Ing., 83700 Rottach-Egern | Hydrauliksystem für die hydraulische Betätigung eines Krankenwagen-Hubtisches |
-
1996
- 1996-07-18 DE DE19629071A patent/DE19629071C1/de not_active Expired - Fee Related
-
1997
- 1997-06-13 US US08/876,020 patent/US5931092A/en not_active Expired - Fee Related
- 1997-06-20 JP JP9163671A patent/JPH10114056A/ja active Pending
- 1997-06-28 DE DE59701875T patent/DE59701875D1/de not_active Expired - Lifetime
- 1997-06-28 EP EP97110608A patent/EP0824071B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3822496A1 (de) * | 1988-07-02 | 1990-01-04 | Kotterer Grafotec | Vorrichtung zum fangen einer gerissenen bedruckstoffbahn |
DE4201481A1 (de) * | 1992-01-21 | 1993-07-22 | Heidelberger Druckmasch Ag | Einrichtung zur handhabung von materialbahnen in verarbeitungsmaschinen |
EP0616966A1 (de) * | 1993-03-25 | 1994-09-28 | Baldwin Web Controls (A Division Of Baldwin Graphic Systems, Inc.) | Vorrichtung zum Verhindern des Aufwickelns in Bahndruckmaschinen |
Also Published As
Publication number | Publication date |
---|---|
JPH10114056A (ja) | 1998-05-06 |
DE19629071C1 (de) | 1998-02-12 |
DE59701875D1 (de) | 2000-07-20 |
EP0824071B1 (de) | 2000-06-14 |
US5931092A (en) | 1999-08-03 |
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