JP2010507543A - Method and apparatus for treating long objects traveling - Google Patents

Abstract

  An apparatus (1) for accurately positioning and processing a long object (2) that travels has at least one travel path control device (4) that controls the travel path of the long object (2). Yes. The travel path control device (4) is influenced by the first sensor, which detects the position of the laterally long object (2) orthogonal to the long object traveling direction, It is arranged behind the travel path control device (4). A long object processing device (16) is disposed behind the first sensor (12), and at least one second sensor is provided following the long object processing device (16). . The second sensor detects the guide reference (F) of the long object, and this guide reference (F) is operatively connected to the traveling path of the long object processing device (4).

Description

  According to the present invention, a traveling long object described in the upper conceptual part of claim 1 is processed by one long object processing process, and traveling path control is performed before that. It relates to a method for processing. The invention also relates to an apparatus according to the superordinate concept part of claim 8 for carrying out this method.

  According to EP-A-0 504 169, an apparatus for cutting or grooving long objects that travel, in particular cardboard, is known. In order to accurately groove or accurately cut a traveling long object, a traveling path adjusting device that guides the traveling long object in a lateral direction perpendicular to the longitudinal direction is a grooved apparatus or It is arranged in front of the cutting device. Such an arrangement has proven to be advantageous and forms the starting point of the present invention.

  According to U.S. Patent Publication No. 2005/158106, a method and apparatus are known for aligning the edges of a traveling long object. In this case, the long object passes through the impression cylinder and is printed by the impression cylinder. Next, the long object is guided through a rotating frame that affects the traveling path of the long object. If the rotating frame is arranged behind the impression cylinder, the rotating frame cannot affect the supply of long objects to the impression cylinder. Therefore, this apparatus cannot adjust the positioning error of the pressure acting on the long object in the lateral direction based on the displacement of the long object.

  According to U.S. Pat. No. 5,667,123, an apparatus for correcting the zigzag movement of a traveling long object (web) is known. This device has two intricate adjustment circuits for road adjustment, but these two adjustment circuits only get their adjustment signals from a single long edge sensor. In this case, the two adjustment circuits involved with each other perform coarse adjustment on the one hand and fine adjustment on the other hand. In this way, the adjustment stroke required for fine adjustment is reduced and the fine adjustment is made more accurately overall. However, this known apparatus does not disclose a long object processing process performed between the first adjustment and the second adjustment. Therefore, the adjustment result is not affected by the long object processing process.

  The object of the present invention is to provide a method of the type mentioned at the outset and a device for carrying out this method. In this case, the quality of the long object processing process must be improved.

  This problem is solved according to the invention by the features described in claim 1 or 8.

  In the method according to the first aspect, the long object traveling is exposed to the long object processing process. This long object processing process is intended to change the long object in any form. A long object control device that affects the traveling path of the long object is provided before the long object processing process so that the long object traveling can be processed sufficiently accurately. In this manner, the long object can be correctly supplied to the long object processing process. In order to further improve the quality of the long object processing process, according to the present invention, the guide reference for the long object is detected behind the long object processing process. The guide reference may be the edge position of the elongated object, but may optionally be assumed to detect any other guide reference. This guide criterion affects the travel path control placed before the long object processing process. Therefore, the travel path control is composed of two stages. This is because, on the one hand, the travel path is controlled before the long object processing process, and on the other hand, the guide reference is controlled after the long object processing process. Such a two-stage control provides a quick response to disturbances in the road due to external influences, as well as when long objects are displaced and connected, and after the long object processing process. A correction of the calculated guide criterion is obtained. In this way, the influence of the long object processing process on the guide reference is corrected, thereby obtaining a high processing quality of the long object processing process. In this form, the guide reference can be calculated correctly only after the travel path control is performed locally, so the control of the guide reference is generally delayed, thereby changing the travel path due to external influences. Cannot be controlled quickly enough. For this reason, relatively quick travel path control that does not take into account guide criteria is effective.

  In order to obtain a particularly effective monitoring and control of the long object treatment process, it is advantageous if, according to claim 2, at least one guide criterion is first generated during the long object treatment process. Thereby, the guide criteria is not only influenced by the long object processing process, but rather shows the result of the long object processing process as it is. In this way, direct monitoring and control of the long object handling process can be obtained, thereby improving its quality accordingly. In such a use case, it is technically impossible to detect the guide reference before the long object processing process. This is because there is no guide standard before the long object processing process. In this case, the two-stage control used is particularly advantageously influenced by the control characteristics of the travel path.

  The method according to the invention has proved to be particularly advantageous for the long object processing process as claimed in claim 3. When printing on a long object, the long object is guided through one or more impression cylinders, in which case the printed image is accurately adjusted on the one hand to the long object, and on the other hand a different printed image. It is necessary to match each other exactly. Since the impression cylinder is generally firmly supported, it is necessary to accurately introduce the long object into the printing press. In this case, the guide reference is advantageously the position of the printed image in the long object that can be detected after printing the long object. In particular, when a long object is cut along the running direction of the long object, a cutting edge is obtained. This cutting edge needs to be accurately adjusted in accordance with a printed image, a folded edge, or the like. In this case, the position of the cutting edge of the long object, which is obtained for the first time in the cutting process, is the target for the guide. At the time of grooving, folding, or pressing of a long object, a target folding portion is formed in the long object, and the long object is folded later, for example, along the target folding portion. Since the bend line at this target fold must be accurately adjusted to the printed image already printed on the long object, in this case, the guide reference is the relative position of the bent line with respect to the printed image. It is. When processing a long product as a textile product, that is, a long fabric, in order to align the wefts of the woven product so as to be perpendicular to the running direction of the long product, the long product is a roll arranged diagonally. Alternatively, it is guided through a bent roll, but at this time, a lateral force that causes the long object to be displaced acts on the long object. In this case, the two-stage control according to the present invention can effectively guide a long object, and it is also necessary to provide an additional device for directly affecting the travel path after the adjusting device. Absent. When pasting or bonding long objects, it is necessary to align the long objects of a plurality of parts with each other. The adhesive can be applied in a predetermined pattern (pattern, handle).

  For the guide criterion obtained after the long object processing process, a function of the spacing between two of the features as claimed in claim 4 is used. In this case, the spacing between features of the same category and different categories is measured. For example, the distance between two printed images or between a printed image and a folding edge is measured. In particular, the position of the printed image in the packaging area is important. In a long fabric having a pattern (pattern) over a wide range, it is important to maintain the position of the printed image in the long fabric, particularly the harmony of the pattern. In particular, the position of the corner edge is particularly important for guiding a long fabric. When a longitudinal cutting device is provided in a long object processing process, there is a special problem that a corner edge to be detected is formed during processing. The position of the recesses, folding edges or stamping lines is particularly important for cardboard. This is because in cardboard, these positions form the target folding line. Especially for long fabrics, the position of the marked (marked) or unmarked mesh line (the bag can be opened along this mesh line) is also important. Particularly in the bonding apparatus, the guide reference is based on the relative distance between the feature on the upper side of the long object and the feature on the lower side of the long object. For the guide criteria, the relative spacing of all the features is the object, in which case the guide criteria are individually defined according to the quality code. In this case, a particular advantage of the method according to the invention is that the guide reference is detected directly during the long object handling operation and is used for long object control, irrespective of its complexity and in particular the establishment of the guide reference. It is in the point that it is done.

  According to the fifth aspect of the present invention, if the target value of the travel path adjustment is influenced by at least one of the guide standards, the two-stage long object control according to the present invention can be easily realized. The long object control target value is then offset relative to the guide reference control until the actually detected defect is corrected again. Although this type of control is relatively slow, it is not really important. This is because only parameters that change very slowly in this form need be corrected.

  In practice, the long article processing apparatus does not work partly correctly. This is because, for example, a dull cutter of a long object cutting device cannot completely cut a long object, and therefore an orderly cutting edge may not be obtained. If the guide reference is a direct result of the long object processing device, i.e. a long object edge that has just been cut as described above, a considerable change for the guide reference is obtained. This is because, instead of the actual cutting edge, the first long object edge suddenly affects the guide standard. However, due to this, the long object traveling path is greatly deviated, thereby increasing the amount of long object waste during production. In order to avoid this, it is advantageous if, according to claim 6, the guide criterion is compared with at least one tolerance threshold. When below or above the tolerance threshold, control is interrupted according to the guide criteria. In this case, since the rapid travel path control is generally maintained, the influence of the disturbance on the travel path is compensated as before. Therefore, it is not necessary to stop the entire production line for long objects. Basically, it is also conceivable to memorize that the guide threshold tolerance threshold is exceeded or below in order to be able to easily remove the section of the long object later.

  It is also advantageous if, according to claim 7, the guide criteria influence the long object handling process. This is particularly advantageous when the long object handling process is equipped with suitable adjustment means. Therefore, for example, the cutting cutter or the grooving device can be slidable in the lateral direction perpendicular to the long object traveling direction. The same is also conceivable in an impression cylinder that is repeatedly provided in a single printing machine in order to realize registration control. In this manner, the long object processing process can be further improved significantly.

  A device according to claim 8 is used for carrying out the method according to any one of claims 1 to 7. This apparatus has at least one travel path control device that affects the travel path of a long object, and this travel path control device can be realized in various forms. This travel path control device has, for example, at least one roll around which a long object is partially wound and which can turn around a set axis. In such a form, a force directed in the transverse direction perpendicular to the long object traveling path is applied to the long object. As an alternative or in addition, the travel path control device has a rotating frame, which is formed by a pivotable block, in which a plurality of turning rollers for the traveling path are located. It is supported. Further, the travel path control device may include one or a plurality of rollers, and these rollers may be supported so as to be able to turn and be pressed against a long object. What is important is that, in any case, the long section control device is in a position where the force directed in the lateral direction perpendicular to the traveling direction of the long object acts on the long object. is there. Moreover, the travel path control device has a controller that receives the actual value signal of the first sensor. In this case, the first sensor detects the position in the lateral direction perpendicular to the traveling direction of the long object, and the traveling path control is performed in this manner. The first sensor is arranged behind the travel path control device so that a closed control circuit is obtained. Behind this first sensor is at least one long object processing device for processing long objects in some form. Further, at least one second sensor for detecting a guide reference for the long object is disposed behind the long object processing apparatus. Since this guide reference is operatively connected to the travel path control device, at least two control circuits are provided. The first control circuit extends to the rear first sensor through the travel path control device, and realizes rear travel path control. The second control circuit extends across the travel path control device, the long object processing process and the at least one second sensor, thereby enabling control of the guide reference. In this case, the guide reference is influenced by the long object processing apparatus or is generated by the long object processing apparatus.

  According to claim 9, if the at least one second sensor is formed by a camera and the camera is pointed at a long object, the possibility of universal use of this device is obtained. . By using such a camera, different guide standards can be obtained depending on the image processing apparatus connected downstream. Such a camera can scan, for example, an arbitrary element of a printed image, a three-dimensional structure of a long object, a position of an edge line or a cutting line, and the like. In this case, the calculation of the concrete guide criteria is performed by a software application connected downstream, so that the device is very adaptable overall and can be used universally. In order to effectively monitor and control the length processing apparatus, according to claim 10, at least one of the second sensors is caused by the length processing apparatus. It is advantageous if monitoring is performed. In this way, complete monitoring and control of the long object processing device is obtained in this way, since the direct result of the long object processing device is evaluated as part of the guide criteria.

  Since at least one first sensor is advantageously provided in the vicinity of the travel path control device, a change in the travel path of a long object based on the travel path control device is detected in a short reaction time and thus quickly. Can be controlled. At least one second sensor has a significantly longer reaction time due to system limitations. This is because the long object must pass through the entire long object processing apparatus before a change in guide reference is detected by the at least one second sensor. Therefore, in order to obtain optimum control characteristics, according to claim 11, the road control device may comprise at least one second sensor with a shorter reaction time compared to at least one first sensor. It is advantageous. In this way, a sufficiently rapid travel path control and possibly a correspondingly delayed guide reference control can be obtained.

  In order to obtain the most effective influence of the travel path by the travel path control device, according to claim 12, the travel path control device comprises at least one turnable adjustment roller on which a long object is wound, It is advantageous if it is formed by at least one regulator that affects the pivoting position of the adjustment roller. In this case, the turning position of the adjustment roller is affected by at least one adjustment device that is a part of the travel path control device. On the one hand, at least one first sensor, which is connected downstream, acts on this adjusting device, and on the other hand, at least one second sensor, which is arranged behind the long object processing process, acts.

It is the schematic of the apparatus 1 for processing the elongate thing to drive | work.

  The present invention will be described below with reference to the embodiments shown in the drawings, but the present invention is not limited to these embodiments.

  FIG. 1 shows a schematic view of an apparatus 1 for processing a traveling long article (Warenbahn) 2. In this case, the long object 2 may be a wrapping paper, a sheet web, a cardboard web, a cardboard web, a long fabric, a metal web, or a combination of these materials. In the drawings, the long object 2 is shown as a wrapping paper as an example. The long object 2 has a stamping edge 2 'extending in the longitudinal direction, and this stamping edge 2' is used as a target folding line. The long object 2 is guided through a roll 3.

  In order to affect the travel path of the long object 2, the device 1 has a travel path control device 4. The travel path control device 4 is formed of a travel path adjustment device 5, an adjustment drive device 6, and an adjuster 8. In the illustrated embodiment, the travel path adjusting device 5 is configured as a rotating frame 9 that can turn around the turning axis 7, and two adjusting rollers 6 are supported on the rotating frame 9 so as to be turnable. . In each adjustment roller 10, the long object 2 is turned 90 °. The entire rotating frame 9 is rotatably held by an adjusting motor 9. In this case, the adjusting motor 6 acts on the rotating frame 9 via a transmission device (not shown). One roll 3 is disposed in front of and behind the rotating frame 9, and these rolls 3 are used as fixed rollers.

  The travel path control device 4 is operatively connected to a first sensor 12 configured as a camera, for example. The first sensor 12 transmits the received image data to the image evaluation device 13. The image evaluation device 13 detects the position of the long object edge 14 of the long object 2 that travels, for example. Optionally, the first sensor 12 detects the long object edge 14 directly, for example by a light barrier, pneumatically, inductively or mechanically. This position is further transmitted to the regulator 8 as an actual value via the signal path 15.

  A long object processing device 16 is disposed behind the sensor 12, and the long object processing device 16 is formed by at least two turning rollers 3 and one cylinder 17. The long object processing apparatus 16 is configured differently depending on what kind of processing process is actually used. In particular, in order to print a continuous image or a continuous pattern on the long object 2, it is considered that the cylinder 17 is configured as a plate cylinder. Alternatively or additionally, the long object processing device 16 may have a cutting cutter 18 or a grooving device 19 for cutting or grooving the long object 2 along its traveling direction 20. Other arbitrary means for processing or processing the long object 2 are also conceivable.

  Two long sensors 21 each configured as a camera are arranged behind the long object processing device 16, and these second sensors 21 detect the upper side and the lower side of the long object 2. To do. The second sensor 21 detects the long object 2 after being processed by the long object processing apparatus 6 and transmits the image data obtained thereby to another image evaluation apparatus 22.

  The image evaluation device 22 calculates a guide reference F from the obtained image data. This guide reference F corresponds to the distance from the long object edge 14 'just cut to the stamped edge 2'. This guide reference F is supplied to another regulator 24 via the signal path 23.

  The adjuster 24 is operatively connected to the adjuster 8 of the travel path control device 4 through the signal path 25 and gives a target value to the adjuster 8. In this manner, two intricate adjustment circuits are obtained, the inner adjustment circuit forming a simple travel path adjustment, whereas the outer adjustment circuit adjusts the guide reference F that is somewhat complex.

  The output signal of the image evaluation device 22 is operatively connected to a comparator 26 via a signal path 23, which compares this output signal with one or two threshold values. In this manner, a validity check of the evaluated guide standard F is performed. By this validity check, the comparator 26 determines whether the guide reference F has been correctly detected. In this case, the guide reference F is processed directly in the adjuster 24, so that the outer adjustment circuit is closed.

  On the other hand, if the comparator 26 gives a result that the guide reference F has not been detected correctly, the regulator 24 is locked via the stop input 27, so that the output signal of the regulator 24 and thus the running. The target value of the regulator 8 of the road control device 4 is kept constant. In this operating state, the outer adjustment circuit for the guide reference F is interrupted and the inner adjustment circuit for the road adjustment device, which has the measured value of the first sensor 12 as the adjustment value, is activated. Yes.

  DESCRIPTION OF SYMBOLS 1 apparatus, 2 elongate thing (winding paper, web), 2 'impression edge part, 3 roll, 4 travel path control apparatus, 5 travel path adjustment apparatus, 6 adjustment drive apparatus, 7 turning axis line, 8 adjuster, 9 rotating frame, 10 adjusting roller, 12 first sensor, 13 image evaluation device, 14, 14 'long object edge, 15 signal path, 16 long object processing device, 17 body, 18 cutting cutter, 19 grooving Device, 20 long object traveling direction, 21 second sensor, 22 image evaluation device, 23 signal path, 24 adjuster, 25 signal path, 26 comparator, 27 stop input, F guide reference

Claims (12)

Process a long object (2) traveling by controlling the traveling path of the long object by at least one travel path control and then processing the long object (2) by at least one long object processing process. In a way to
A long object to be traveled (2) characterized by detecting at least one guide reference (F) of the long object (2) that affects the travel path control after the long object processing process is performed. How to handle.   The method according to claim 1, wherein at least one guide criterion (F) is first generated during the long object treatment process. In the long material processing process,
A print,
B cutting,
C Grooving,
D Folding,
E stamping,
F alignment,
G Paste,
H coating,
I bonding,
The method according to claim 1 or 2, wherein at least one of the steps is performed. At least one of the guide criteria (F) has the following characteristics:
A Print image position,
B Adhesive application position,
C the position of the corner edge,
D the position of the recess,
E Folding edge position,
F The position of the impression line,
G mesh line with or without marking,
The method of claim 3, wherein the method is a function of at least one spacing between two of the features.   5. The method according to claim 1, wherein the target value of the road control is influenced by at least one of the guide criteria (F).   Comparing at least one of the guide criteria (F) with at least one tolerance threshold and interrupting the adjustment based on the at least one guide criteria (F) when the tolerance threshold is exceeded or below. Item 6. The method according to any one of Items 1 to 5.   7. A method according to any one of the preceding claims, wherein the at least one guide criterion (F) influences the long object handling process. An apparatus for processing a long object (2) that travels, the apparatus (1) having at least one travel path control device (4) that controls the travel path of the long object (2). The travel path control device (4) is disposed behind the travel path control device (4) and is arranged in a lateral direction perpendicular to the long object travel direction (20). In the form of an operative connection with at least one first sensor (12) for detecting position,
At least one second sensor (21) for detecting a guide reference (F) is disposed behind the at least one long object processing apparatus (16), and the second sensor (21) is A device for processing a traveling long object (2), characterized in that it is operatively connected to a travel path control device (4).   9. The device according to claim 8, wherein at least one of said second sensors (21) is formed by a camera (21), said camera (21) being directed at an elongated object (2).   The apparatus according to claim 8 or 9, wherein the at least one second sensor (21) monitors at least one characteristic of the elongated object (2) produced by the elongated object processing apparatus (16).   11. The travel path control device (4) has at least one second sensor (21) with a short reaction time compared to at least one first sensor (12). The device according to any one of the above.   The travel path control device (4) has at least one swivelable adjustment roller (10) around which the long object (2) is wound, and at least one that affects the swivel position of the adjustment roller (10). Device according to any one of claims 8 to 11, formed by two regulators (8).

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