EP1965980A1 - Bahn- oder bogenführende maschine sowie verfahren zum betrieb derselben - Google Patents
Bahn- oder bogenführende maschine sowie verfahren zum betrieb derselbenInfo
- Publication number
- EP1965980A1 EP1965980A1 EP06818934A EP06818934A EP1965980A1 EP 1965980 A1 EP1965980 A1 EP 1965980A1 EP 06818934 A EP06818934 A EP 06818934A EP 06818934 A EP06818934 A EP 06818934A EP 1965980 A1 EP1965980 A1 EP 1965980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- measuring device
- nip
- drive
- 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.)
- Granted
Links
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
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/192—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/26—Damages to handling machine
Definitions
- the invention relates to a web or sheet-guiding machine according to claim 1 and a method for operating such a machine according to claim 8.
- Web or sheet-guiding machines are used in a variety of fields of technology. Printing machines and laminating machines usually fall under these definitions. Machines for winding or unwinding webs and reversing devices are also part of this machine type. Film extrusion lines also have film transport and squeegee rollers which are connected upstream of the possible take-up devices.
- nips in the above exemplified machines are characterized by direct mechanical contact between the transported material (usually sheets or webs) and the two rolls to be marked. This is the case during operation of the machine, for example between printing substrate as well as printing plates and impression cylinders.
- a contact winder such a situation is given above all between contact roller and winding tube in normal winding operation.
- the transport of the webs or sheets through these nips is usually determined by the rotational movement of the nip limiting webs or at least one subsequent roller. This at least one roller provides the torque necessary for transporting the material through the gap. Therefore, at least one of these rollers will be driven.
- electric machines of various types are used in printing, wrapping or packaging machines. These include synchronous or asynchronous electric motors, with even DC-powered electric motors are still in use.
- the nips are subject to safety observation.
- barriers and / or light barriers which can generate a "stop signal" for the drives of the relevant rollers, are often used in front of the nips
- Another possibility to prevent pinchings in the nips, but at the same time the greatest possible accessibility of the nip This is done by limiting, as a rule, the torque of the at least one roller which provides the torque for transporting the webs or sheets through the nip, which can be achieved by limiting - usually regulating - the torque-forming current It may be possible to operate the roller below a dangerous torque, however, an emergency may also occur as a result of an increase in torque.
- Such an increase in torque can be triggered by a foreign body - like a hand - in the nip.
- Commercially available power dividers which include frequency converters for AC or DC motors, often have the ability to measure the current at one of their outputs. For this purpose, so-called “shunts”, ie auxiliary resistors, are often provided.This measurement can be based on torque regulation or emergency shutdown.
- the object of the present invention is to propose a machine in which the observance of the torque specification and / or the observation of torque increases are monitored more reliably.
- the safety device comprises a second measuring device with which a second physical variable can be measured, this second physical variable having a functional relationship with the first electrical variable, and in that the safety device comprises a computer module, with which the temporal Course of the two variables is comparable and with which warning signals can be generated in case of deviations of the time course.
- a size which is in a functional relationship to the first size will be chosen as the second physical quantity.
- this functional relationship can also be quantified only with empirical values and stored, for example, in the form of a calibration table.
- some web-processing machines will have devices for measuring these mechanical quantities.
- the web speed is measured in particular in printing presses, but also in winders by encoders on rollers, but also by all types of non-contact sensors.
- These non-contact sensors include optical sensors that register, for example, the passage of register marks. All types of sensors can be connected to suitable evaluation modules.
- Pendulum rollers can be used to measure web tension. Pendulum rollers are often already provided with web-guiding machines in order to keep the web tension constant. For this purpose they are variably suspended in their position.
- a force is exerted on the axis of the pendulum roller - for example by a pneumatic cylinder. This force affects the web tension.
- the change in the pendulum roller position which is a consequence of web tension fluctuations, can be recorded, for example, with position sensors, so that information about the web tension can be obtained.
- measuring rollers whose axes are in operative connection with force measuring devices, can be advantageously used for measuring the web tension.
- second physical variables can be used as "second physical variables."
- a second current measuring device can simply be connected downstream of a first current measuring device for measuring the torque-forming current, but it could even be more advantageous to measure another related electrical variable in the second measurement
- different "current vector components” could be measured by the two measuring systems. Even a deviation of these components can be due to error or sudden Changes in torque requirements go back.
- the application of different current measuring principles can also bring advantages. For example, a floating, standard on a frequency shunt shunt measurement can be supplemented by a potential-free current measurement via a magnetic field meter (eg Hall probe or magnetoresistive sensor) as a second measurement. As a consequence of such measures, the susceptibility of the measurement to single failure causes would decrease.
- a magnetic field meter eg Hall probe or magnetoresistive sensor
- the "hierarchy" of the two measuring systems can be designed differently in two equally responsive or even measuring systems, the measured values can be processed with equal rights. This could be when using two current measuring systems in normal operation of the winder It may be advantageous to have an "emergency signal" triggered by a control device in such a system as soon as one of the two measuring systems indicates a steep increase in torque .
- an "emergency signal" triggered by a control device in such a system as soon as one of the two measuring systems indicates a steep increase in torque
- the emergency stop function triggered solely by the responsive metering system, and the slower system then has the task of providing regular readings
- This possibility is likely to be favored when combining a measurement of the torque-generating current with a measurement of characteristics of the orbital mechanics, as quantities such as web tension and speed are usually slow
- the intervals between the transmission of measured values from the monitoring measuring system may well be very large compared to the response time of the monitored system Many safety regulations should already be met if the intervals between such
- the computer module with which the temporal course of the two variables is compared with one another, can be designed differently from both the hardware and the software side. Initially, this means every component, that is, every module that can perform this task by its function. In an advantageous embodiment of the invention, two such modules can be provided to generate a redundancy here and further increase the interference safety.
- Such a module can fall back on the often already existing CPU of the power controller - often a standard frequency converter.
- These hardware components can be easily further developed by software application so that they can perform the function. Suitable hardware components are usually also found on the machine itself. This is often controlled by an industrial computer. Even such hardware units can perceive by programming the role of the control module.
- a functional pair of a control module in the frequency converter and a control module in the control computer an advantageous development of the invention is seen.
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Seats For Vehicles (AREA)
- Soil Working Implements (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005061241A DE102005061241A1 (de) | 2005-12-20 | 2005-12-20 | Bahn- oder bogenführende Maschine sowie Verfahren zum Betrieb derselben |
| PCT/EP2006/011525 WO2007071312A1 (de) | 2005-12-20 | 2006-12-01 | Bahn- oder bogenführende maschine sowie verfahren zum betrieb derselben |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1965980A1 true EP1965980A1 (de) | 2008-09-10 |
| EP1965980B1 EP1965980B1 (de) | 2010-02-24 |
Family
ID=37734874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06818934A Active EP1965980B1 (de) | 2005-12-20 | 2006-12-01 | Bahn- oder bogenführende maschine sowie verfahren zum betrieb derselben |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US20090108044A1 (de) |
| EP (1) | EP1965980B1 (de) |
| AT (1) | ATE458613T1 (de) |
| DE (2) | DE102005061241A1 (de) |
| WO (1) | WO2007071312A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3104845A (en) * | 1963-09-24 | Winder guard | ||
| US3047198A (en) * | 1959-08-21 | 1962-07-31 | W H Sanders Electronics Ltd | Mechanism for the control of strip materials |
| US3164333A (en) * | 1964-03-17 | 1965-01-05 | Mount Hope Machinery Ltd | Tension control system for web-feeding mechanisms |
| US3323700A (en) * | 1965-06-22 | 1967-06-06 | Borg Warner | Web driving system with driving, braking and motion sensing units adjacent each margin of the web |
| DE19600110A1 (de) * | 1995-08-10 | 1997-07-10 | Baumueller Nuernberg Gmbh | Elektrisches Antriebssystem und Sicherheitsmodul insbesondere in einer Druckmaschine |
| DE19834725A1 (de) * | 1998-07-31 | 2000-02-03 | Wifag Maschf | Bahnspannungsregeleinrichtung |
| DE10027442B4 (de) * | 2000-06-02 | 2005-12-01 | Man Roland Druckmaschinen Ag | Verfahren und Vorrichtung zur Detektion von Bahnrissen |
| US6433499B1 (en) * | 2000-11-29 | 2002-08-13 | Heidelberger Druckmaschinen Ag | Device and method for automatic tension transducer calibration |
| DE10321600B4 (de) | 2003-05-13 | 2005-05-04 | Windmöller & Hölscher Kg | Wickelvorrichtung mit einer Strahlungsquelle zur Positionierung der Wickelhülsen |
| DE10321642B4 (de) | 2003-05-13 | 2006-01-05 | Windmöller & Hölscher Kg | Wickelvorrichtung mit gerader Tragschiene |
-
2005
- 2005-12-20 DE DE102005061241A patent/DE102005061241A1/de not_active Ceased
-
2006
- 2006-12-01 EP EP06818934A patent/EP1965980B1/de active Active
- 2006-12-01 AT AT06818934T patent/ATE458613T1/de active
- 2006-12-01 WO PCT/EP2006/011525 patent/WO2007071312A1/de not_active Ceased
- 2006-12-01 US US12/083,333 patent/US20090108044A1/en not_active Abandoned
- 2006-12-01 DE DE502006006283T patent/DE502006006283D1/de active Active
-
2013
- 2013-08-22 US US13/973,060 patent/US9617107B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007071312A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007071312A1 (de) | 2007-06-28 |
| US9617107B2 (en) | 2017-04-11 |
| US20140175142A1 (en) | 2014-06-26 |
| DE102005061241A1 (de) | 2007-06-28 |
| EP1965980B1 (de) | 2010-02-24 |
| US20090108044A1 (en) | 2009-04-30 |
| DE502006006283D1 (de) | 2010-04-08 |
| ATE458613T1 (de) | 2010-03-15 |
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