EP2346762B1 - Securing a hazardous area in the region surrounding the automatic loading of reels on a reel changer - Google Patents
Securing a hazardous area in the region surrounding the automatic loading of reels on a reel changer Download PDFInfo
- Publication number
- EP2346762B1 EP2346762B1 EP09781152A EP09781152A EP2346762B1 EP 2346762 B1 EP2346762 B1 EP 2346762B1 EP 09781152 A EP09781152 A EP 09781152A EP 09781152 A EP09781152 A EP 09781152A EP 2346762 B1 EP2346762 B1 EP 2346762B1
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- EP
- European Patent Office
- Prior art keywords
- hazardous area
- area protection
- protection according
- light
- known object
- 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.)
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- 231100001261 hazardous Toxicity 0.000 title claims description 40
- 230000004224 protection Effects 0.000 claims description 66
- 230000001681 protective effect Effects 0.000 claims description 55
- 238000011156 evaluation Methods 0.000 claims description 22
- 230000006870 function Effects 0.000 description 11
- 230000004888 barrier function Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000009993 protective function Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 241000876466 Varanus bengalensis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009979 protective mechanism Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
- B65H2407/10—Safety means, e.g. for preventing injuries or illegal operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
- B65H2553/41—Photoelectric detectors
- B65H2553/416—Array arrangement, i.e. row of emitters or detectors
Definitions
- the invention relates to a hazardous area protection for the field of automatic reel placement on a reel changer according to the preamble of claim 1.
- a danger area coverage which is considered to be the closest prior art, is from the patent application WO 2005/080241 A known.
- a personal protection device is described on a reel changer of a printing press, which is designed for example in the form of a safety net on the loading side of the reel changer.
- This protective device should make the loading side always a secure space when the residual paper roll approaches a critical, ie fracture endangered für für für für für für für für für für für für für für für für für für für für für für für für assupra.
- the protective device is mounted on the transfer stage used to feed new rolls of material and at a fixed point relative to the roll stand on the loading side. To feed a new roll of material, the traverser moves to the roll stand, wherein the guard strains.
- the protective device is activated only when the described critical state of the residual paper roll is achieved.
- the area on the loading side of the reel changer can be entered unhindered.
- additional area protection by means of light barriers is proposed. Due to the signal emitted by the light barrier, a visible or audible signal is emitted to the person located in the area of the reel changer.
- WO 2005/080241 A2 It is known to provide an area coverage for the reliability in the environment of large moving material rolls.
- the attachment of a fence is proposed at the boundaries of a roll of material storage.
- a lock may be provided in the area protection.
- a preferably non-contact area security is proposed, which can be realized for example via light barriers or ultrasonic sensors. By arranging such sensors at different heights, complex query routines can be realized so that, for example, material rolls can easily pass through the lock, whereas an unauthorized passage through the lock can be achieved Sensor sections triggers an alarm and / or stops the movement of the material rolls to prevent accidents.
- the EP 08 49 201 A1 relates to a method for lateral position detection and positioning a supply roll, wherein the roll thickness and the respective lateral distance to the roll changer by directly opposite sensing elements in the form of sensors, for. B. laser beam or ultrasonic sensors are measured and evaluated. Furthermore, the scanning elements are connected to a programmable logic controller for a drive unit for positioning the supply web roll.
- an apparatus for preparing a web of material wound into a supply roll having a bearing for supporting and rotating the supply roll about a longitudinal matter. Sensors are used to detect the radius of the supply roll during the rotational movement. Parallel to the longitudinal axis of the supply roll several, the radius detecting sensors are arranged.
- the non-contact devices described in the aforementioned documents are used to detect the position or dimensions of a role in the field of automatic reel assembly on a roll changer and do not fulfill a protective or security function.
- the surface protection has, along one side of the surface to be protected, a source emitting radiation over its entire length. Along the opposite side a reflective strip is arranged. The radiation is predominantly reflected in the plane defined by the source and the reflective strip. At each of the two ends of the radiation source, a radiation detector is provided, which is connected to an evaluation circuit.
- This area protection can as Continuity fuse can be used for example in hazardous areas by a light curtain is built between two rods, the interruption of a signal is triggered. The disadvantage of this hazardous area protection is that it can only take over a simple protective function.
- a device for securing a danger zone, in particular the danger zone of an automated machine which comprises first means for generating an optically monitored, virtual barrier and second means for generating a switching signal for stopping the machine when breaking the barrier.
- the first means comprise an image acquisition unit and a defined target whose image is taken by the image acquisition unit and compared by a comparison unit (second means) with a characteristic size for a reference image.
- the defined goal is a structured, high-contrast pattern that includes position markers for determining a current position.
- the DE 296 02 098 U1 refers to a reel changer in a web-fed rotary printing press for introducing a printing material web wound on rolls into a printing unit of the web-fed rotary printing press.
- the area surrounding the reel changer is replaced by at least one sensor, in particular an optical sensor, for. B. monitors a camera which is connected to an image recognition computer.
- image recognition computer In the image recognition computer, a comparison is made between a captured actual image of the region and a stored target image or a sequence of target images. In case of deviations is by a Signal generating device generates a warning or alarm signal.
- the at least one sensor may also include step mats, contact strips, light barriers, or the like, non-contact protective devices which serve to supply partial information or to control or activate the sensor.
- the solution disclosed in this document allows monitoring of the area of the reel splitter, thereby providing selective protection by recognizing known objects and allowing them to enter the area without triggering warning or alarm signals.
- the image recognition can easily be influenced by subjective factors in the monitored area, eg. B. a deviating position of one of the target image as known to be recognized object on a captured actual image, which can lead to malfunction or malfunction.
- the DE 100 26 305 A1 describes an optoelectronic device for monitoring a protected area with at least one non-contact protective device, which has an evaluation unit for generating an article detection signal when an object penetrates into the protected area.
- the non-contact protective device may be a light grid, which comprises a transmitting unit emitting light beams, a receiving unit receiving the light beams and an evaluation unit connected to the receiving unit.
- the non-contact protective device is coupled to an image acquisition unit for detecting a secondary monitoring area which is close to the protected area but outside the protected area. This so-called muting function allows the temporary deactivation of the non-contact protective device for the penetration of detected objects into the protected area without generating an object detection signal.
- the muting function is implemented by the image acquisition unit, which detects the objects penetrating into the secondary monitoring area, wherein a distinction is made between permissible and impermissible objects. A classification of the detected objects is possible.
- the disadvantage of this solution exists in that the recognition of known objects does not always work reliably.
- the establishment of an additional image capture unit is associated with additional expense and financial expenses.
- the invention has for its object to provide adaleriosabêt for the field of automatic roll loading on a reel splicer.
- the hazardous area protection has a non-contact protective device, which is connected to an evaluation unit.
- the protective device is as Light grating formed, which has a plurality of mutually parallel light beams.
- the evaluation unit detects the order of interruption of the light beams when entering and / or extending any object and can recognize a known object therefrom and deactivate the protective device in predetermined cases.
- the protective device in addition to a protective function also has a muting function, which saves the effort for setting up an additional device for the muting function.
- a so-called muting function allows time-limited deactivation of parts of a safety device or the entire safety device. Preferably, the penetration of objects is allowed without the safety device to operate.
- the light rays are evenly spaced from each other and are inclined to the horizontal, wherein the light rays in other embodiments, also horizontally extending and the surface of the light grid can be arranged inclined to the vertical.
- At least one light beam of the light grid running above the known object can advantageously be permanently active in order to detect the penetration of a person or a non-authorized object into the secure area of the automatic roll placement on the roll changer, even if these together with the known one and for the entrance permissible object penetrate into the secured area when the protective device is deactivated.
- the well-known and admitted for the entry object may, for. B. be a roll of material, a residual sleeve container or a driverless transport vehicle.
- the hazardous area protection can additionally include at least two photocells for muting, eg. B. reflection photo cells, which are connected to the evaluation unit.
- at least two photocells for muting eg. B. reflection photo cells, which are connected to the evaluation unit.
- reflection photocells are installed as a muting group (two each before and after the light grid).
- objects in particular residual sleeve containers, can be used on the basis of e.g. Detected laterally glued reflection strip and the muting function is activated, or the protective device can be disabled. This may be necessary in particular when removing the residual sleeve container, which have a different shape compared to the rollers.
- the muting function can be carried out by reflection strips on the residual sleeve container.
- AGV automatic guided vehicle.
- the hazardous area protection can have a second permanently active, non-contact protective device comprising at least two light beams which intersect at a small distance above the known object and in their further course be passed close to the known object. These two light beams thus run only a few millimeters to a few centimeters apart parallel to imaginary tangents, which rest against the upper half of the known object. The lower ends of the two light beams are thus clearly below the upper edge of the known object and can, depending on the selected angle of attack near the Axial plane of the known object lie.
- An advantage of the invention is that a reliable, permanent hazardous area protection can be realized by the second permanently active, non-contact protective device, even if the known object is a roller having a larger roller diameter.
- the beam path does not permit unintentional overrun or inadvertent underrun of the beams of the second protection device.
- An underrun of the rays is at best possible when people move in a strongly bent state. But even the best protection device can protect only to a limited extent against all eventualities or against deliberate evasion. It can not be their job to safely prevent a willful intrusion in any case.
- Another advantage of the invention is that the protective device can be attached directly to the roll changer.
- the protective device can be attached directly to the roll changer.
- the non-contact protective device and / or the second permanently active, non-contact protective device per light beam comprise a transmitter and a receiver.
- the protective devices for all light beams comprise exactly one transmitter, one receiver and a plurality of deflecting mirrors.
- one-way photocells are used in the aforementioned protective devices, in which transmitter and receiver are arranged opposite one another, in separate housings.
- a combined transmitting and receiving unit is arranged opposite a reflector. The emitted light rays are reflected back to the receiving unit via the reflector.
- the position of the transmitter, receiver, reflector or deflecting mirror is variable. In this way, adaptation to different than known and authorized for access to the secure area objects can be made. In this context, it has proven to be particularly advantageous to equip the hazardous area protection with a sensor for detecting the dimensions of the known object.
- the second permanently active, non-contact protective device it must be ensured that the beams do not touch the known object, since this is intended to protect the danger zone during the retraction and / or extension of a known object when the first protective device is inactive. Accordingly, the second protective device must not be triggered if the known object passes through the access limits.
- the adaptability to different objects ensures that the rays are always outside the area traveled by the known object.
- the senor is connected to an adjusting device.
- the adjusting device serves for the automatic adaptation of the transmitter, receiver, reflector or deflecting mirror to the known object.
- the hazard area protection may also include a photocell located within the secure area for positioning a roll or driverless transport vehicle in a launch position.
- Fig. 1 shows a danger area protection for the range of automatic roll stocking 01 on a roll changer 02 (see Fig. 2 ).
- Hazardous area protection includes a first, non-contact protection device located at the entrance. To be secured access limits are not only on the roll feed side, but also opposite the RollenzuGermanseite, if both sides are freely accessible to persons.
- the first protective device comprises two light beams 04, which secure the area which can be passed through by a roller 05 or a residual sleeve container, wherein the first protective device can be deactivated to enable retraction and extension.
- the first protective device can be deactivated.
- the hazardous area protection furthermore has a second permanently active, non-contact protective device for permanent protection of the surrounding area of the roller 05.
- the second protection device includes a Light beam 07, which has a distance of 50 mm to the largest (maximum workable roll diameter) roll diameter. Especially with larger roll diameters, however, such a second protective device has proved to be disadvantageous.
- Fig. 2 3a can be removed, there is the danger that a smaller person can run together with the roller 05 in the secure area of the roll loading and thus can be injured by moving machine parts or the moving roller 05.
- Fig. 3b shows a photos Schemesabêt for the field of automatic reel assembly 01.
- the danger area protection in turn comprises a first, non-contact protective device at the access limits with two light beams 04, which secure the Wegrittbaren by the roller 05 or the residual sleeve container or the driverless transport vehicle area.
- the second protection device comprises two light beams 07 which, starting from points located above the roller 05, lead laterally past the roller 05 to near the bottom.
- Fig. 3b It can be seen that even a protective device designed in this way can not provide sufficient protection.
- the light rays 07 run past the roller 05 almost to the floor, there is the risk that the light rays 07 may be exceeded by a person who, for example, walks alongside the roller 05 during insertion.
- Fig. 3c shows a danger area coverage for the range of automatic roll loading 01.
- This danger area coverage unlike the known solutions on a light grid 03 for a non-contact protective device on the access limits of the secure area of the automatic roll stock 01 on.
- the light grid 03 can for retracting or extending roller 05 or residual sleeve container or driverless transport vehicle are disabled.
- a second permanently active, non-contact protective device for permanent protection of the surrounding area of the roller 05 is provided, which will be described below.
- the access limits to be protected can not only be on the roll feed side but also opposite the roll feed side.
- Protective devices must be installed on both sides if both sides are freely accessible to persons.
- the non-contact protective device in conjunction with the evaluation unit, secures each access limit to be protected by a light grid 03.
- the light grid 03 is formed by a plurality of mutually parallel light beams 04, which are evenly spaced by preferably 40 mm from each other and inclined to the horizontal.
- the light rays 04 can also be arranged horizontally and the surface of the light grid inclined to the vertical, wherein the inclination is preferably 150.
- the light beams 04 of the light grid 03 are associated with a transmitter and a receiver, which are positioned at the end points of the light beams 04.
- the light grid 03 is connected to an evaluation unit, which is not shown.
- the evaluation unit detects the order of interruption of the light rays 04 when retracting and / or extending a roller 05 or a residual sleeve container or a driverless transport vehicle and disables the hazardous area secured by the light grid 03 upon detection of a known object that allows access to the secured area is.
- the danger area coverage also comprises four photocells 06 for muting, in particular reflection photo cells 06, two pairs of reflection photo cells 06 being arranged in front of and behind the light grid 03 in pairs. These are used for deactivating (muting) the light grid 03 upon detection of a known object, in particular a residual sleeve container, which complicate the evaluation of the interruption order of the light beams because of the shape.
- the reflection photoelectric cells 06 are connected to an evaluation unit, not shown. To detect the residual sleeve container are provided with reflection strips, which are positioned according to the arrangement of the reflection photoelectric cells 06 on the residual sleeve containers.
- the light grid 03 is muted (turned off) when the reflection strips are detected on a residual sleeve container. After passing through the residual sleeve container by the danger area coverage, the fourth reflection photocell 06 receives no reflection of the light beam more, so then the light grid 03 is activated again.
- the muting function can be realized in the case of a driverless transport vehicle with two reflection photoelectric cells 06, since the driverless transport vehicle does not drive completely through the light grid, but only a piece enters the roll changer 02 to deposit the roller 05.
- the first reflection photo cell 06 detects the reflection strip which is positioned on the vehicle according to the arrangement of the reflection photo cells 06, and turns off the light curtain 03. If the second reflection photo cell 06 receives no reflection of the light beam when returning the driverless transport vehicle, the light grid 03 is activated again.
- the two uppermost light beams 04 of the light grid 03 remain permanently active in order to prevent a person or an object from entering the secured area of the automatic reel assembly together with the roller 05 or the residual sleeve container at a roll changer 02 with deactivated danger area protection by the light grid 03 avoided.
- the second permanently active, non-contact protective device comprises at least two light beams 07, which extend transversely to the longitudinal extent or axial direction of the roller 05 and intersect at a slight distance above the roller 05 and in its further course passes close to the roller 05 and the roller container become.
- the crossing point of the two light beams 07 is preferably only a few centimeters, z. B. ⁇ 15 cm, in particular ⁇ 8 cm, preferably ⁇ 5 cm, above the upper roll edge and the light rays 07 are below the crossing point then at a distance of a few millimeters, z. B. ⁇ 15 mm, in particular ⁇ 8 mm, preferably ⁇ 5 mm up to a few centimeters on the roller 05 over.
- the light rays 07 thus have their upper end points above the roller 05, but outside the roller extension.
- the lower end points are below the roll upper edge, preferably at a height which is greater than 1/2 of the roll diameter and corresponds to about 2/3 to 3/4 of the roll diameter.
- Fig. 4 shows a front view of an embodiment of the hazardous area protection for the range of automatic roll stocking 01.
- the second permanently active, non-contact protective device comprises for each light beam 07 a combined transmitting and receiving unit 08.
- the light beam 07 is thrown from an opposite reflector 09 back to the transmitting and receiving unit 08.
- This beam guidance can also be used with the light beams 04 of the light grid 03 become.
- one-way light barriers in which transmitter and receiver are arranged opposite each other, can be used.
- all light beams 04; 07 of the light grid 03 and the second permanent active protection device each have exactly one transmitter and one receiver. In these cases, to guide the light beams 04; 07 requires several deflection mirrors.
- the transmitter can be a light emitting diode or laser diode emitting infrared radiation or visible light, and a phototransistor as receiver.
- the position of the transmitting and receiving units 08 and the reflectors 09 can be changed.
- the second permanently active protective device can equip the second permanently active protective device with a sensor (not shown) for detecting the roll diameter.
- the sensor can in turn be connected to an adjusting device (not shown), which performs an automatic positioning of the transmitting and receiving units 08 and the reflectors 09 as a function of the detected roll diameter.
- an optimal guidance of the light rays 07 can always be ensured.
- the position of transmitting and receiving units 08 and the reflectors 09 can of course be corrected manually. In this case, it has proven to be advantageous if the roller changer 02 a corresponding scale is attached.
- the danger area protection preferably further comprises four reflection photoelectric cells 06 for muting and a photocell 12, which is arranged within the secured area of the automatic reel placement on the reel changer 02 for positioning the reel 05 in a start position and connected to an evaluation unit, not shown.
- the roll 05 coming from the upstream feed passes through the danger area protection and the detection area of the following photocell 12.
- the evaluation unit recognizes the freeing of the photocell 12 and stops the roller drive.
- the roller 05 is driven by the roller drive backwards to the start position until the light beam of the photocell 12 is interrupted again.
- the light beams can also be deflected, generated and / or received and / or deflected by separate transmitters and receivers and possibly mirrors.
Landscapes
- Replacement Of Web Rolls (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
Die Erfindung betrifft eine Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung an einem Rollenwechsler gemäß dem Oberbegriff des Anspruchs 1. Eine derartige Gefahrenbereichabsicherung, die als nächstliegender Stand der Technik angesehen wird, ist aus der Patentanmeldung
Technische Anlagen, wie beispielsweise Werkzeugmaschinen und Industrieroboter, bergen die Gefahr, dass Personen, die sich den beweglichen Teilen der Maschine nähern, verletzt werden können. Gefahrenstellen an einem Rollenwechsler sind insbesondere der Schwenkbereich der Rollentragarme, der Bereich hinter dem Rollenwechsler im Schwenkbereich des Kleberahmens, der Bestückungsbereich, sowie die Grube unterhalb des Rollenwechslers, sofern vorhanden. Es ist daher erforderlich, an Maschinen Schutzeinrichtungen vorzusehen, die es verhindern, dass eine Person durch die Ausführung einer Arbeitsbewegung von den beweglichen Teilen der Maschine verletzt wird. In der Vergangenheit sind hierfür vor allem mechanische Schutzeinrichtungen angewandt worden. So werden Werkzeugmaschinen häufig vollständig gekapselt, wobei der Zugang über Schutztüren erfolgt. Industrieroboter werden in mit Schutzzäunen umgebenen Bereichen betrieben.Technical equipment, such as machine tools and industrial robots, involves the risk of injury to persons approaching the moving parts of the machine. Danger points on a reel changer are, in particular, the pivot range of the roller support arms, the area behind the reel changer in the swivel range of the adhesive frame, the placement area, and the pit below the reel changer, if present. It is therefore necessary to provide machines with protective devices which prevent a person from being injured by the execution of a working movement of the moving parts of the machine. In the past, mainly mechanical protective devices have been used for this purpose. Machine tools are often completely enclosed, with access via protective doors. Industrial robots are operated in areas surrounded by protective fences.
Mechanische Schutzeinrichtungen sind jedoch mit Nachteilen verbunden. Für die Schutzeinrichtung selbst und auch für das Öffnen von eventuell vorhandenen Schutztüren muss entsprechender Raum vorhanden sein, was den Platzbedarf der Gesamtanlage erhöht. Außerdem ist ein schneller Eingriff in den Produktionsablauf nicht möglich, da das Öffnen von Schutztüren oder Schutzgittern mit einem entsprechenden Zeit- und Steueraufwand verbunden ist. Mechanische Schutzeinrichtungen sind darüber hinaus nicht wartungs- und verschleißfrei.Mechanical guards, however, are associated with disadvantages. For the protective device itself and also for the opening of any existing safety doors corresponding space must be present, which increases the footprint of the entire system. In addition, a quick intervention in the production process is not possible because the opening of guard doors or guards is associated with a corresponding time and tax expense. In addition, mechanical guards are not maintenance and wear-free.
In der
Aus der
Die
In der
Die in den vorgenannten Schriften beschriebenen, berührungslos wirkenden Vorrichtungen dienen der Erfassung der Lage oder der Abmessungen einer Rolle im Bereich der automatischen Rollenbestückung an einem Rollenwechsler und erfüllen keine Schutz- oder Sicherungsfunktion.The non-contact devices described in the aforementioned documents are used to detect the position or dimensions of a role in the field of automatic reel assembly on a roll changer and do not fulfill a protective or security function.
Aus der
Aus der
Die
Die
Aus der
Bei der
Bei der
Der Erfindung liegt die Aufgabe zugrunde, eine Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung an einem Rollenwechsler zu schaffen.The invention has for its object to provide a Gefahrbereichsabsicherung for the field of automatic roll loading on a reel splicer.
Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass eine verbesserte Gefahrenbereichsabsicherung basierend auf berührungslos wirkenden Schutzmechanismen für den Bereich der automatischen Rollenbestückung an einem Rollenwechsler zur Verfügung zu stellen, die auch bei verschiedenen Rollendurchmessern und dem Abtransport von Resthülsenbehältern eine permanente Absicherung des gesicherten Bereichs gewährleistet.The advantages which can be achieved with the invention are, in particular, that an improved danger area protection based on non-contact protective mechanisms for the automatic reel placement on a reel changer is available which ensures permanent protection of the secured area even with different reel diameters and the removal of residual sleeve containers ,
Die Gefahrenbereichsabsicherung weist eine berührungslos wirkende Schutzeinrichtung auf, welche mit einer Auswerteeinheit verbundenen ist. Die Schutzeinrichtung ist als Lichtgitter ausgebildet, welches mehrere zueinander parallel verlaufende Lichtstrahlen aufweist. Die Auswerteeinheit erfasst die Reihenfolge der Unterbrechung der Lichtstrahlen beim Ein- und/oder Ausfahren irgendeines Objektes und kann daraus ein bekanntes Objekt erkennen und in vorbestimmten Fällen die Schutzeinrichtung deaktivieren.The hazardous area protection has a non-contact protective device, which is connected to an evaluation unit. The protective device is as Light grating formed, which has a plurality of mutually parallel light beams. The evaluation unit detects the order of interruption of the light beams when entering and / or extending any object and can recognize a known object therefrom and deactivate the protective device in predetermined cases.
Die Vorteile der Erfindung sind insbesondere darin zu sehen, dass die Schutzeinrichtung neben einer Schutzfunktion auch eine Muting-Funktion aufweist, was den Aufwand für das Einrichten einer zusätzlichen Vorrichtung für die Muting-Funktion erspart.The advantages of the invention are to be seen in particular in that the protective device in addition to a protective function also has a muting function, which saves the effort for setting up an additional device for the muting function.
Eine sogenannte Muting-Funktion gestattet zeitlich begrenzte Deaktivierung von Teilen einer Sicherheitseinrichtung oder der gesamten Sicherheitseinrichtung. Vorzugsweise wird dabei das Eindringen von Objekten zugelassen ohne die Sicherheitseinrichtung zu betätigen.A so-called muting function allows time-limited deactivation of parts of a safety device or the entire safety device. Preferably, the penetration of objects is allowed without the safety device to operate.
Bei einer bevorzugten Ausführungsform sind die Lichtstrahlen gleichmäßig voneinander beabstandet und verlaufen geneigt zur Waagerechten, wobei die Lichtstrahlen in anderen Ausführungsformen auch waagerecht verlaufend und die Fläche des Lichtgitters geneigt zur Senkrechten angeordnet werden können.In a preferred embodiment, the light rays are evenly spaced from each other and are inclined to the horizontal, wherein the light rays in other embodiments, also horizontally extending and the surface of the light grid can be arranged inclined to the vertical.
Mindestens ein oberhalb des bekannten Objektes verlaufender Lichtstrahl des Lichtgitters kann vorteilhafterweise permanent aktiv sein, um das Eindringen einer Person oder eines nicht zugelassenen Objektes in den gesicherten Bereich der automatischen Rollenbestückung am Rollenwechsler auch dann zu erkennen, wenn diese zusammen mit dem bekannten und für den Eintritt zugelassenen Objekt bei deaktivierter Schutzeinrichtung in den gesicherten Bereich eindringen.At least one light beam of the light grid running above the known object can advantageously be permanently active in order to detect the penetration of a person or a non-authorized object into the secure area of the automatic roll placement on the roll changer, even if these together with the known one and for the entrance permissible object penetrate into the secured area when the protective device is deactivated.
Das bekannte und für den Eintritt zugelassene Objekt kann z. B. eine Materialrolle, ein Resthülsenbehälter oder ein fahrerloses Transportfahrzeug sein.The well-known and admitted for the entry object may, for. B. be a roll of material, a residual sleeve container or a driverless transport vehicle.
Unabhängig davon kann die Gefahrenbereichsabsicherung zusätzlich mindestens zwei Fotozellen für Muting, z. B. Reflexionsfotozellen aufweisen, welche mit der Auswerteeinheit verbunden sind. Bei einer bevorzugten Ausführungsform sind insbesondere vier Reflexionsfotozellen als Muting-Gruppe (je zwei vor bzw. nach dem Lichtgitter) eingebaut. Damit können Objekte, insbesondere Resthülsenbehälter anhand eines z.B. seitlich darauf aufgeklebten Reflexionsstreifens erkannt und die Muting-Funktion aktiviert, bzw. die Schutzeinrichtung deaktiviert werden. Dies kann insbesondere beim Abtransportieren der Resthülsenbehälter nötig sein, die im Vergleich zu den Rollen eine andere Form aufweisen. Sind beispielsweise in der Auswerteeinheit lediglich Rollen als bekannte Objekte implementiert (wegen der Form und der einfachen Auswertung der Unterbrechungsreihenfolge der Lichtstrahlen), so kann die Muting-Funktion per Reflexionsstreifen am Resthülsenbehälter vorgenommen werden. Der Abtransport der Resthülsenbehälter erfolgt häufig mit führerlosen Transportfahrzeugen (AGV = automatic guided vehicle). Diese müssen zum Passieren des Sicherheitsbereiches ebenfalls mit Reflexionsstreifen für Muting versehen werden oder in der Auswerteeinheit muss eine entsprechende Unterbrechungsreihenfolge der Lichtstrahlen des Lichtgitters bekannt sein, um das AGV als bekanntes, für den Eintritt in den Sicherheitsbereich zugelassenes Objekt zu erkennen.Irrespective of this, the hazardous area protection can additionally include at least two photocells for muting, eg. B. reflection photo cells, which are connected to the evaluation unit. In a preferred embodiment, in particular four reflection photocells are installed as a muting group (two each before and after the light grid). In this way, objects, in particular residual sleeve containers, can be used on the basis of e.g. Detected laterally glued reflection strip and the muting function is activated, or the protective device can be disabled. This may be necessary in particular when removing the residual sleeve container, which have a different shape compared to the rollers. If, for example, only rollers are implemented as known objects in the evaluation unit (because of the shape and the simple evaluation of the interruption order of the light beams), the muting function can be carried out by reflection strips on the residual sleeve container. The removal of the residual sleeve container is often done with driverless transport vehicles (AGV = automatic guided vehicle). These must also be provided with reflective strips for muting to pass through the security area or in the evaluation unit, a corresponding interruption order of the light beams of the light grid must be known to recognize the AGV as a known, approved for entry into the security area object.
Zur Absicherung des geschützten Bereichs gegen Eindringen von Personen oder Objekten zusammen mit dem bekannten Objekt bei deaktivierter Schutzeinrichtung kann die Gefahrenbereichsabsicherung eine zweite permanent aktive, berührungslos wirkende Schutzeinrichtung aufweisen, welche mindestens zwei Lichtstrahlen umfasst, die sich in geringem Abstand oberhalb vom bekannten Objekt kreuzen und in ihrem weiteren Verlauf dicht am bekannten Objekt vorbeigeführt werden. Diese beiden Lichtstrahlen verlaufen somit nur wenige Millimeter bis einige Zentimeter parallel beabstandet zu gedachten Tangenten, die an der oberen Hälfte des bekannten Objektes anliegen. Die unteren Enden der beiden Lichtstrahlen befinden sich dadurch deutlich unterhalb der Oberkante des bekannten Objektes und können je nach gewähltem Anstellwinkel nahe der Achsebene des bekannten Objektes liegen.To safeguard the protected area against intrusion of persons or objects together with the known object when the protective device is deactivated, the hazardous area protection can have a second permanently active, non-contact protective device comprising at least two light beams which intersect at a small distance above the known object and in their further course be passed close to the known object. These two light beams thus run only a few millimeters to a few centimeters apart parallel to imaginary tangents, which rest against the upper half of the known object. The lower ends of the two light beams are thus clearly below the upper edge of the known object and can, depending on the selected angle of attack near the Axial plane of the known object lie.
Ein Vorteil der Erfindung besteht darin, dass durch die zweite permanent aktive, berührungslos wirkende Schutzeinrichtung eine zuverlässige, permanente Gefahrenbereichsabsicherung realisiert werden kann, auch wenn das bekannte Objekt eine Rolle ist, welche einen größeren Rollendurchmesser aufweist. Der Strahlenverlauf gestattet weder ein unbeabsichtigtes Überlaufen noch ein unbeabsichtigtes Unterlaufen der Strahlen der zweiten Schutzeinrichtung. Ein Unterlaufen der Strahlen ist allenfalls möglich, wenn sich Personen in einem stark gebückten Zustand bewegen. Aber auch die beste Schutzeinrichtung kann nur in einem begrenzten Maße gegen alle Eventualitäten bzw. gegen bewusste Umgehung schützen. Es kann nicht ihre Aufgabe sein, ein mutwilliges Eindringen in jedem Fall sicher zu verhindern.An advantage of the invention is that a reliable, permanent hazardous area protection can be realized by the second permanently active, non-contact protective device, even if the known object is a roller having a larger roller diameter. The beam path does not permit unintentional overrun or inadvertent underrun of the beams of the second protection device. An underrun of the rays is at best possible when people move in a strongly bent state. But even the best protection device can protect only to a limited extent against all eventualities or against deliberate evasion. It can not be their job to safely prevent a willful intrusion in any case.
Als weiterer Vorteil der Erfindung ist zu nennen, dass die Schutzvorrichtung direkt am Rollenwechsler befestigt werden kann. Somit werden im Unterschied zu den vorbekannten Lösungen, welche einen oberhalb der Rolle angeordneten, Befestigungspunkt benötigen, keine zusätzlichen, außerhalb des Rollenwechslers liegende Befestigungspunkte benötigt.Another advantage of the invention is that the protective device can be attached directly to the roll changer. Thus, in contrast to the previously known solutions, which require an attachment point arranged above the roller, no additional attachment points lying outside the reel changer are required.
Nach einer besonders bevorzugten Ausführungsform umfassen die berührungslos wirkende Schutzeinrichtung und/oder die zweite permanent aktive, berührungslos wirkende Schutzeinrichtung je Lichtstrahl einen Sender und einen Empfänger. Es sind jedoch auch Ausführungen möglich, bei denen die Schutzeinrichtungen für sämtliche Lichtstrahlen genau einen Sender, einen Empfänger und mehrere Umlenkspiegel umfassen.According to a particularly preferred embodiment, the non-contact protective device and / or the second permanently active, non-contact protective device per light beam comprise a transmitter and a receiver. However, embodiments are also possible in which the protective devices for all light beams comprise exactly one transmitter, one receiver and a plurality of deflecting mirrors.
Bei einer vorteilhaften Ausführungsform kommen bei den genannten Schutzeinrichtungen Einweg-Lichtschranken zum Einsatz, bei denen Sender und Empfänger einander gegenüberliegend, in voneinander getrennten Gehäusen, angeordnet sind.In an advantageous embodiment, one-way photocells are used in the aforementioned protective devices, in which transmitter and receiver are arranged opposite one another, in separate housings.
Als besonders zweckmäßig hat sich die Verwendung von Reflexions-Lichtschranken für die genannten Schutzeinrichtungen erwiesen. Bei diesen Ausführungsformen ist eine kombinierte Sende- und Empfangseinheit einem Reflektor gegenüberliegend angeordnet. Die ausgesandten Lichtstrahlen werden über den Reflektor zur Empfangseinheit zurückgeworfen.Particularly useful is the use of photoelectric retro-reflective devices for said protective devices has been found. In these embodiments, a combined transmitting and receiving unit is arranged opposite a reflector. The emitted light rays are reflected back to the receiving unit via the reflector.
Weiterhin ist es vorteilhaft, wenn die Position von Sender, Empfänger, Reflektor bzw. Umlenkspiegel veränderbar ist. Auf diese Weise kann eine Anpassung an unterschiedliche als bekannt und für den Zugang in den abgesicherten Bereich zugelassene Objekte erfolgen. In diesem Zusammenhang hat es sich als besonders günstig erwiesen, die Gefahrenbereichsabsicherung mit einem Sensor zum Erfassen der Abmessungen des bekannten Objektes auszustatten.Furthermore, it is advantageous if the position of the transmitter, receiver, reflector or deflecting mirror is variable. In this way, adaptation to different than known and authorized for access to the secure area objects can be made. In this context, it has proven to be particularly advantageous to equip the hazardous area protection with a sensor for detecting the dimensions of the known object.
Besonders für die ordnungsgemäße Funktionsweise der zweiten permanent aktiven, berührungslos wirkenden Schutzeinrichtung muss sichergestellt werden, dass die Strahlen das bekannte Objekt nicht berühren, da die den Gefahrenbereich während des Ein- und/oder Ausfahrens eines bekannten Objektes bei inaktiver erster Schutzeinrichtung absichern soll. Die zweite Schutzeinrichtung darf demnach nicht ausgelöst werden, wenn das bekannte Objekt die Zugangsgrenzen durchfährt. Durch die Anpassbarkeit an verschiedene Objekte wird gewährleistet, dass sich die Strahlen immer außerhalb des vom bekannten Objekt durchfahrenen Bereiches befinden.Particularly for the proper functioning of the second permanently active, non-contact protective device, it must be ensured that the beams do not touch the known object, since this is intended to protect the danger zone during the retraction and / or extension of a known object when the first protective device is inactive. Accordingly, the second protective device must not be triggered if the known object passes through the access limits. The adaptability to different objects ensures that the rays are always outside the area traveled by the known object.
Von Vorteil ist es, wenn bei einer nochmals weitergebildeten Ausführungsform, der Sensor mit einer Stelleinrichtung verbunden ist. Die Stelleinrichtung dient dabei zur automatischen Anpassung von Sender, Empfänger, Reflektor bzw. Umlenkspiegel an das bekannte Objekt. Durch die Verwendung einer derartigen Stelleinrichtung ist sichergestellt, dass ständig eine Neupositionierung von Sender, Empfänger, Reflektor bzw. Umlenkspiegel entsprechend den erfassten Abmessungen des bekannten Objektes erfolgt. Natürlich ist es auch möglich, eine manuelle Positionierung vorzunehmen. Hierzu könnte man sich vorstellen, dass am Rollenwechsler eine entsprechende Skala angebracht ist, die das manuelle Positionieren erleichtert.It is advantageous if, in a further developed embodiment, the sensor is connected to an adjusting device. The adjusting device serves for the automatic adaptation of the transmitter, receiver, reflector or deflecting mirror to the known object. By using such a control device ensures that constantly repositioning of transmitter, receiver, reflector or deflection mirror according to the detected dimensions of the known object he follows. Of course it is also possible to do a manual positioning. For this, one could imagine that the reel changer has a corresponding scale, which facilitates manual positioning.
Als vorteilhaft hat sich diese Gefahrenbereichsabsicherung für eine Rolle mit einem Rollendurchmesser bis 1.524 mm erwiesen. Bei derart großen Rollen konnte mit herkömmlichen Schutzeinrichtungen kein ausreichender Schutz mehr erfolgen, da die Lichtstrahlen der zweiten Schutzeinrichtung bereits von kleineren Personen, die sich nur leicht bücken, unterlaufen werden können.This hazardous area protection has proved to be advantageous for a roll with a roll diameter of up to 1,524 mm. In such large roles could be done with conventional protection devices no longer adequate protection, since the light beams of the second protection device can be undermined by smaller people who only stoop slightly.
Die Gefahrenbereichsabsicherung kann auch eine Fotozelle umfassen, welche innerhalb des abgesicherten Bereichs zur Positionierung einer Rolle oder eines fahrerlosen Transportfahrzeuges in einer Startposition angeordnet ist.The hazard area protection may also include a photocell located within the secure area for positioning a roll or driverless transport vehicle in a launch position.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschreiben.Embodiments of the invention are illustrated in the drawings and will be described in more detail below.
Es zeigen:
- Fig. 1
- eine prinzipielle Anordnung einer Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung;
- Fig. 2
- eine perspektivische Darstellung eines Rollenwechslers mit einer Gefahrenbereichsabsicherung;
- Fig. 3a
- eine Prinzipdarstellung einer Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung;
- Fig. 3b
- eine Prinzipdarstellung einer abgewandelten Gefahrenbereichsabsicherung;
- Fig. 3c
- ein Lichtgitter für eine berührungslos wirkende Schutzeinrichtung einer Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung mit einer zweiten permanent aktiven, berührungslos wirkenden Schutzeinrichtung;
- Fig. 4
- eine Vorderansicht einer Ausführungsform der Gefahrenbereichsabsicherung für den Bereich der automatischen Rollenbestückung mit einer Fotozelle zur Positionierung einer Rolle in einer Startposition.
- Fig. 1
- a basic arrangement of a hazardous area protection for the field of automatic roll loading;
- Fig. 2
- a perspective view of a roll changer with a hazardous area protection;
- Fig. 3a
- a schematic representation of a hazardous area protection for the field of automatic roll stocking;
- Fig. 3b
- a schematic representation of a modified danger area protection;
- Fig. 3c
- a light grid for a non-contact protective device of a hazardous area protection for the field of automatic roll loading with a second permanently active, non-contact protective device;
- Fig. 4
- a front view of an embodiment of the danger area for the area of automatic roll loading with a photocell for positioning a roll in a start position.
Zum Wechseln der Rolle 05 kann die erste Schutzeinrichtung deaktiviert werden. Die Gefahrenbereichsabsicherung weist weiterhin eine zweite permanent aktive, berührungslos wirkende Schutzeinrichtung zur permanenten Absicherung des Umgebungsbereichs der Rolle 05 auf. Die zweite Schutzeinrichtung umfasst einen Lichtstrahl 07, welcher einen Abstand von 50 mm zum größten (maximal verarbeitbaren Rollendurchmesser) Rollendurchmesser aufweist. Gerade bei größeren Rollendurchmessern hat sich eine derartig ausgeführte zweite Schutzeinrichtung jedoch als nachteilig erwiesen.To change the
Wie
In dem dargestellten Ausführungsbeispiel ist das Lichtgitter 03 durch mehrere zueinander parallel verlaufenden Lichtstrahlen 04 gebildet, welche gleichmäßig um vorzugsweise 40 mm voneinander beabstandet sind und geneigt zur Waagerechten verlaufen. Selbstverständlich kann auch ein anderer Abstand oder unterschiedliche Neigungen gewählt werden. Die Lichtstrahlen 04 können auch waagerecht verlaufend und die Fläche des Lichtgitters geneigt zur Senkrechten angeordnet werden, wobei die Neigung vorzugsweise 150beträgt.In the illustrated embodiment, the
Den Lichtstrahlen 04 des Lichtgitters 03 sind ein Sender und ein Empfänger zugeordnet, welche an den Endpunkten der Lichtstrahlen 04 positioniert sind. Das Lichtgitter 03 ist mit einer Auswerteeinheit verbunden, welche nicht dargestellt ist. Die Auswerteeinheit erfasst die Reihenfolge der Unterbrechung der Lichtstrahlen 04 beim Ein- und/oder Ausfahren einer Rolle 05 oder ein Resthülsenbehälters bzw. ein fahrerloses Transportfahrzeug und deaktiviert die Gefahrenbereichsabsicherung durch das Lichtgitter 03 bei erkennen eines bekannten Objektes, dem der Zugang in den abgesicherten Bereich gestattet ist.The light beams 04 of the
In der Auswerteeinheit wird ausgewertet, ob die einzelnen Lichtstrahlen 04 des Lichtgitters 03 nacheinander unterbrochen bzw. wieder frei werden. Es ist egal, wie viele bzw. in welchem Bereich die einzelnen Lichtstrahlen 04 unterbrochen werden. Lücken zwischen der Unterbrechung der einzelnen Lichtstrahlen 04 sind aber nicht zulässig.In the evaluation is evaluated whether the individual light beams 04 of the
Unabhängig davon umfasst die Gefahrenbereichsabsicherung noch vier Fotozellen 06 für Muting, insbesondere Reflexionsfotozellen 06, wobei paarweise zwei Reflexionsfotozellen 06 vor und nach dem Lichtgitter 03 angeordnet sind. Diese dienen zum Deaktivieren (Muting) des Lichtgitters 03 bei Erkennen eines bekannten Objektes, insbesondere eines Resthülsenbehälters, welche wegen der Form die Auswertung der Unterbrechungsreihenfolge der Lichtstrahlen erschweren. Des Weiteren sind die Reflexionsfotozellen 06 mit einer nicht dargestellten Auswerteeinheit verbunden. Zum Erkennen sind die Resthülsenbehälter mit Reflexionsstreifen versehen, welche entsprechend der Anordnung der Reflexionsfotozellen 06 auf den Resthülsenbehältern positioniert sind. Das Lichtgitter 03 wird gemutet (ausgeschaltet), wenn die Reflexionsstreifen auf einem Resthülsenbehälter erkannt werden. Nach dem Durchfahren des Resthülsenbehälters durch die Gefahrenbereichsabsicherung empfängt die vierte Reflexionsfotozelle 06 keine Reflexion des Lichtstrahles mehr, sodass dann das Lichtgitter 03 wieder aktiviert wird.Irrespective of this, the danger area coverage also comprises four
Die Muting-Funktion kann im Falle eines fahrerlosen Transportfahrzeuges mit zwei Reflexionsfotozellen 06 realisiert werden, da das fahrerlose Transportfahrzeug nicht komplett durch das Lichtgitter fährt, sondern nur ein Stück in den Rollenwechsler 02 einfährt, um die Rolle 05 abzulegen. Die erste Reflexionsfotozelle 06 erkennt den Reflexionsstreifen, welcher auf dem Fahrzeug entsprechend der Anordnung der Reflexionsfotozellen 06 positioniert ist, und schaltet das Lichtgitter 03 aus. Wenn die zweite Reflexionsfotozelle 06 keine Reflexion des Lichtstrahles beim Zurückfahren des fahrerlosen Transportfahrzeuges mehr empfängt, wird das Lichtgitter 03 wieder aktiviert.The muting function can be realized in the case of a driverless transport vehicle with two reflection
Die zwei obersten Lichtstrahlen 04 des Lichtgitters 03 bleiben permanent aktiv, um ein Eindringen einer Person oder eines Objektes zusammen mit der Rolle 05 oder dem Resthülsenbehälter in den abgesicherten Bereich der automatischen Rollenbestückung an einem Rollenwechsler 02 bei deaktivierter Gefahrenbereichsabsicherung durch das Lichtgitter 03 vermeiden.The two uppermost light beams 04 of the
Die zweite permanent aktive, berührungslos wirkende Schutzeinrichtung umfasst mindestens zwei Lichtstrahlen 07, die quer zur Längserstreckung bzw. Achsrichtung der Rolle 05 verlaufen und sich in geringem Abstand oberhalb der Rolle 05 kreuzen und in ihrem weiteren Verlauf dicht an der Rolle 05 bzw. dem Rollenbehälter vorbeigeführt werden. Der Kreuzungspunkt der beiden Lichtstrahlen 07 liegt vorzugsweise nur wenige Zentimeter, z. B. < 15 cm, insbesondere < 8 cm, vorzugsweise < 5 cm, oberhalb der Rollenoberkante und die Lichtstrahlen 07 verlaufen unterhalb des Kreuzungspunktes dann im Abstand von einigen Millimetern, z. B. < 15 mm, insbesondere < 8 mm, vorzugsweise < 5 mm bis zu wenigen Zentimetern an der Rolle 05 vorbei. Die Lichtstrahlen 07 haben damit ihre oberen Endpunkte oberhalb der Rolle 05, jedoch außerhalb der Rollenerstreckung. Die unteren Endpunkte liegen unterhalb der Rollenoberkante, vorzugsweise in einer Höhe die größer als 1/2 des Rollendurchmessers ist und etwa 2/3 bis 3/4 des Rollendurchmessers entspricht.The second permanently active, non-contact protective device comprises at least two
Aus
Als vorteilhaft hat es sich erwiesen, wenn die Position der Sende- und Empfangseinheiten 08 sowie der Reflektoren 09 verändert werden kann. Hierzu ist es zweckmäßig, die zweite permanent aktive Schutzeinrichtung mit einem Sensor (nicht dargestellt) zum Erfassen des Rollendurchmessers auszustatten. Der Sensor kann wiederum mit einer Stelleinrichtung (nicht dargestellt) verbunden werden, welche in Abhängigkeit vom erfassten Rollendurchmesser eine automatische Positionierung der Sende- und Empfangseinheiten 08 sowie der Reflektoren 09 vornimmt. Auf diese Weise kann stets eine optimale Führung der Lichtstrahlen 07 sichergestellt werden. Die Position von Sende- und Empfangseinheiten 08 sowie der Reflektoren 09 kann natürlich auch manuell korrigiert werden. In diesem Fall hat es sich als günstig erwiesen, wenn am Rollenwechsler 02 eine entsprechende Skala angebracht ist.It has proven to be advantageous if the position of the transmitting and receiving
Bei einem Eindringen einer Person oder eines nicht zugelassenen Objektes zusammen mit der Rolle 05 oder dem Resthülsenbehälter in den abgesicherten Bereich der automatischen Rollenbestückung am Rollenwechsler 02 bei deaktiviertem Lichtgitter 03 wird von der Person bzw. dem nicht zugelassenen Objekt wenigstens der Strahlengang eines der Lichtstrahlen 07 unterbrochen. Diese Störung wird vom Empfänger erfasst, in entsprechende Stellsignale umgewandelt, welche ein Abschalten des Rollenwechslers 02 bewirken. Außerdem kann über eine Alarmierungseinrichtung 11 ein Alarm in Form eines sichtbaren und/oder akustischen Signals ausgegeben werden.If a person or an unauthorized object enters the secured area of the automatic reel assembly on the
Die Gefahrenbereichsabsicherung umfasst vorzugsweise weiterhin vier Reflexionsfotozellen 06 für Muting und eine Fotozelle 12, welche innerhalb des abgesicherten Bereichs der automatischen Rollenbestückung am Rollenwechsler 02 zur Positionierung der Rolle 05 in einer Startposition angeordnet und mit einer nicht dargestellten Auswerteeinheit verbunden ist. Die von der vorgelagerten Beschickung kommende Rolle 05 durchfährt die Gefahrenbereichsabsicherung und den Erfassungsbereich der nachfolgenden Fotozelle 12. Die Auswerteeinheit erkennt das Freiwerden der Fotozelle 12 und stoppt den Rollenantrieb. Die Rolle 05 wird durch den Rollenantrieb rückwärts zur Startposition gefahren bis der Lichtstrahl der Fotozelle 12 erneut unterbrochen wird.The danger area protection preferably further comprises four reflection
In allen Fällen können die Lichtstrahlen auch anstelle von Sende- und Empfangseinheiten und Reflektoren auch von getrennten Sendern und Empfängern sowie ggf. von Spiegeln umgelenkt, erzeugt und/oder empfangen und/oder umgelenkt werden.In all cases, instead of transmitting and receiving units and reflectors, the light beams can also be deflected, generated and / or received and / or deflected by separate transmitters and receivers and possibly mirrors.
- 0101
- Bereich der automatischen Rollenbestückung, Bereich des RollentransportsArea of Automatic Roll Loading, Area of Roll Transport
- 0202
- Rollenwechslerreelstands
- 0303
- Lichtgitterlight Curtain
- 0404
- Lichtstrahlbeam of light
- 0505
- Rollerole
- 0606
- Fotozelle, ReflexionsfotozellePhotocell, reflection photocell
- 0707
- Lichtstrahlbeam of light
- 0808
- Sende- und Empfangseinheit; Sender; EmpfängerTransmitting and receiving unit; Transmitter; receiver
- 0909
- Reflektor; Empfänger, SenderReflector; Receiver, transmitter
- 1010
- --
- 1111
- Alarmierungseinrichtungalarming device
- 1212
- Fotozellephotocell
Claims (18)
- Hazardous area protection for the roll transport area (01) to a reel changer (02) with a protective device acting without contact at access boundaries of the area, which can be deactivated for the retraction and/or delivery of a known object, and with an evaluation unit, the protective device being designed as a light grid (03), which comprises a number of light rays (04) running parallel to one another, characterized in that the evaluation unit has means for recording the sequence of the interruption of the light rays (04) on the retraction and/or delivery of any object and by means of this sequence recognizes a known object authorized for access to the hazardous area and deactivates the protective device in this case and in that the hazardous area protection additionally comprises a second protective device acting without contact, which is permanently active.
- Hazardous area protection according to Claim 1, characterized in that the known object is a reel (05), a residual sleeve container or a driverless transport vehicle.
- Hazardous area protection according to Claim 1, characterized in that the light rays (04) are evenly spaced from one another.
- Hazardous area protection according to Claim 1, characterized in that the light rays (04) run horizontally.
- Hazardous area protection according to Claim 4, characterized in that the surface of the light grid (03) is arranged inclined to the perpendicular.
- Hazardous area protection according to Claim 1, characterized in that the light rays (04) run inclined to the horizontal.
- Hazardous area protection according to Claim 1, characterized in that at least one light ray (04) of the light grid (03) running above the known object is permanently active.
- Hazardous area protection according to Claim 1, characterized in that it furthermore comprises at least two photocells (06) for muting, which are connected to the evaluation unit.
- Hazardous area protection according to Claim 1, characterized in that the hazardous area protection comprises at least two light rays (07) running diagonally to the longitudinal extent of the known object.
- Hazardous area protection according to Claim 9, characterized in that the respective upper endpoint of the light rays (07) lies above the upper edge of the known object.
- Hazardous area protection according to Claim 9, characterized in that the respective lower endpoint of the light rays (07) lies below the upper edge of the known object.
- Hazardous area protection according to Claim 9, characterized in that the light rays (07) cross above the known object and are led past in their further course to the known object.
- Hazardous area protection according to Claim 1, characterized in that the protective devices comprises a sensor for recording the dimensions of the known object.
- Hazardous area protection according to one of Claims 1 to 13, characterized in that the known object is a reel (05) with a diameter of > 450 mm.
- Hazardous area protection according to Claim 1 or 14, characterized in that the hazardous area protection comprises a photocell (12), which is arranged within the secured area and makes possible a positioning of the real (05) or a driverless transport vehicle in a starting position.
- Hazardous area protection according to Claim 8, characterized in that objects provided with reflecting strips can be recorded by means of the at least two photocells (06).
- Hazardous area protection according to Claim 16, characterized in that the objects are designed as a driverless transport vehicle or residual sleeve containers.
- Hazardous area protection according to Claim 16, characterized in that two reflection photocells (06) are incorporated ahead of the light grid (03) and two reflection photocells (06) are incorporated after the light grid (03).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102008042813A DE102008042813A1 (en) | 2008-10-14 | 2008-10-14 | Dangerous area protection for the area of automatic roll loading on a roll changer |
PCT/EP2009/059698 WO2010043430A1 (en) | 2008-10-14 | 2009-07-28 | Securing a hazardous area in the region surrounding the automatic loading of reels on a reel changer |
Publications (2)
Publication Number | Publication Date |
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EP2346762A1 EP2346762A1 (en) | 2011-07-27 |
EP2346762B1 true EP2346762B1 (en) | 2012-12-05 |
Family
ID=41202511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09781152A Active EP2346762B1 (en) | 2008-10-14 | 2009-07-28 | Securing a hazardous area in the region surrounding the automatic loading of reels on a reel changer |
Country Status (6)
Country | Link |
---|---|
US (1) | US8339260B2 (en) |
EP (1) | EP2346762B1 (en) |
JP (1) | JP4961053B2 (en) |
CN (1) | CN102171120B (en) |
DE (1) | DE102008042813A1 (en) |
WO (1) | WO2010043430A1 (en) |
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DE102010001014A1 (en) | 2010-01-19 | 2011-09-08 | Koenig & Bauer Aktiengesellschaft | Reel changer with protection of a security area |
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CN102508429A (en) * | 2011-11-14 | 2012-06-20 | 江苏环能通环保科技有限公司 | Safety protection device used for lithium battery production |
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JP6712107B2 (en) * | 2016-02-02 | 2020-06-17 | 株式会社日立インダストリアルプロダクツ | Transport system |
DE102016125595B4 (en) * | 2016-12-23 | 2019-09-12 | Sick Ag | Access protection system |
CN106918846B (en) * | 2017-03-29 | 2019-05-24 | 天奇自动化工程股份有限公司 | Anti- intrusion detection device based on combined photo switch and grating |
US10351055B2 (en) | 2017-06-12 | 2019-07-16 | Mac LTT, Inc. | Deployable alarming and safety zone for use with a tanker delivery |
US10300845B2 (en) | 2017-06-12 | 2019-05-28 | Mac LTT, Inc. | Deployable alarming and safety zone for use with a tanker delivery |
US11155204B2 (en) | 2017-06-12 | 2021-10-26 | Mac LTT, Inc. | Gas hauler with an awning with a built in light |
DE102019201598A1 (en) | 2019-02-07 | 2020-08-13 | Bhs Intralogistics Gmbh | Delivery system |
US11420525B2 (en) | 2020-04-21 | 2022-08-23 | Mac LTT, Inc. | Tractor trailer with included battery charging |
IT202100005855A1 (en) | 2021-03-12 | 2022-09-12 | Sacmi Tech S P A | AUTOMATIC GUIDED VEHICLE FOR CROSSING A MANNED GAP, METHOD AND SYSTEM |
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-
2008
- 2008-10-14 DE DE102008042813A patent/DE102008042813A1/en not_active Withdrawn
-
2009
- 2009-07-28 EP EP09781152A patent/EP2346762B1/en active Active
- 2009-07-28 JP JP2011531413A patent/JP4961053B2/en not_active Expired - Fee Related
- 2009-07-28 US US12/998,378 patent/US8339260B2/en not_active Expired - Fee Related
- 2009-07-28 WO PCT/EP2009/059698 patent/WO2010043430A1/en active Application Filing
- 2009-07-28 CN CN200980139709.7A patent/CN102171120B/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2010043430A1 (en) | 2010-04-22 |
CN102171120B (en) | 2014-05-14 |
EP2346762A1 (en) | 2011-07-27 |
JP4961053B2 (en) | 2012-06-27 |
US20110202161A1 (en) | 2011-08-18 |
DE102008042813A1 (en) | 2010-04-22 |
CN102171120A (en) | 2011-08-31 |
JP2012505134A (en) | 2012-03-01 |
US8339260B2 (en) | 2012-12-25 |
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