CN108473264B - Method for adjusting a material web process by means of positioning marks and device for carrying out the method - Google Patents

Method for adjusting a material web process by means of positioning marks and device for carrying out the method Download PDF

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Publication number
CN108473264B
CN108473264B CN201680075291.8A CN201680075291A CN108473264B CN 108473264 B CN108473264 B CN 108473264B CN 201680075291 A CN201680075291 A CN 201680075291A CN 108473264 B CN108473264 B CN 108473264B
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China
Prior art keywords
tools
material web
processing
positioning marks
sensors
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Expired - Fee Related
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CN201680075291.8A
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Chinese (zh)
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CN108473264A (en
Inventor
乌韦·策尔
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SIG Combibloc Services AG
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SIG Technology AG
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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/192—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51532—Blade cutter, e.g. single blade cutter
    • B65H2301/515323—Blade cutter, e.g. single blade cutter rotary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/264—Calculating means; Controlling methods with key characteristics based on closed loop control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1944—Wrapping or packing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/81—Packaging machines

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention relates to a method for regulating the processing of a material web (2) which is driven by at least drive rollers (3) and has positioning marks (8), wherein the positioning marks (8) are guided past at least sensors (7) which detect the positioning marks (8) and an evaluation device (16) detects the deviations of the actual positions of at least processing tools (10) corresponding to the detection from the set positions of the at least processing tools (10) and wherein an adjustment device (17) regulates the actual positions of the at least processing tools (10) by means of the deviations between the actual positions and the set positions of at least processing tools (10). The evaluation device (16) obtains the actual distances of the positioning marks (8) which occur one after the other on the basis of a measuring system of at least drive rollers (3) and correlates them with the expected distances of the positioning marks (8) of a measuring system on the basis of at least drive rollers (3), wherein a predetermined control speed for controlling the processing tools (10) is derived by means of the correlation.

Description

Method for adjusting a material web process by means of positioning marks and device for carrying out the method
Technical Field
The invention relates to a method for adjusting the processing of a material web, in particular a packaging material web, which is guided through a processing device for processing purposes and has positioning indicators, and to a device for processing a material web, in particular a packaging material web, on a processing device, comprising at least drive rollers for driving the material web, at least processing tools for carrying out the method, at least sensors for detecting the positioning indicators of the material web guided past the sensors, an evaluation device for determining a deviation between the actual positions of at least processing tools of the processing device, which deviation corresponds to the detection of the positioning indicators by at least sensors, and the positions of at least processing tools set for the same detections, and an adjustment device for adjusting the actual processing positions of at least processing tools by means of the deviation between the actual positions and the set positions of the at least processing tools determined by the evaluation device.
Background
In this way, a material web having a plurality of identical, successively arranged segments can be produced, the material web being driven during the processing process with at least drive rollers.
For example, a color print can be provided on the material web. In order to ensure a high printing quality, the individual printing steps must be carried out synchronously, i.e. completely overlapping one another. Alternatively or additionally, depending on the material web and the intended application of the material web, it is also possible to coordinate several work steps, such as punching, cutting, grooving, embossing and perforating, with one another, so that a material web or material cut-out can be produced as accurately as possible.
These basic principles are for the most part independent of the material web. The material web to be processed can be, for example, a single layer material. However, webs of multilayer material made of composite materials and/or laminates are also conceivable. It can be used, for example, as a packaging material. The packaging material is, for example, a packaging laminate with separate layers made of different materials, which are joined to each other and which impart different properties to the packaging laminate. For foodstuffs, so-called cardboard/plastic packaging material laminates or cardboard composite packages are frequently considered, which consist of a laminate comprising a cardboard layer and an outer, in particular thermoplastic, plastic layer, for example consisting of Polyethylene (PE). The cardboard provides sufficient stability to the package, whereby the package can be handled and, for example, stacked in a simple manner. The plastic layer can be sealed and provides protection for the cardboard against moisture and protects the food material from absorbing undesired substances from the packaging. Additional layers may be provided, such as barrier layers made of aluminum, polyamide and/or ethylene vinyl alcohol, which organize the diffusion of oxygen and other gases through the package. The corresponding material web is relatively thick and relatively strong, which makes precise processing of the material web in successive steps difficult.
In order to adjust the processing of a material web which is guided through a processing device for processing purposes and has positioning marks, so-called positioning adjustment or print marking adjustment is often used. For this purpose, the material web is provided with positioning marks or printed marks at specific intervals, which can be detected by an optical sensor when passing through the sensor. Here, the printed marks are positioning marks applied by printing, and these positioning marks may in principle also be provided in other ways than by printing.
The repeat length is defined, for example, by the spacing between the leading edges of subsequent packaging material cuts in the material web, but alternatively or additionally, the repeat length can also be understood as the spacing between two identical processing positions along the material web.
The control device adjusts the position of the machining tool depending on the magnitude and sign of the deviation in order to compensate for the deviation, the machining tool is accelerated or decelerated for a short time, which means that the drive of the machining tool moves the machining tool slightly faster or slower for a short time, the time period during which the acceleration and/or braking or deceleration is carried out is generally shorter than the time period which has elapsed between the detection of two successive positioning marks by at least sensors, the position of the machining tool is influenced by such short acceleration or deceleration attempts in such a way that it corresponds to the set machining tool position , and therefore the material is accelerated or decelerated only for a very short time, in the majority of cases, or only for very short times, due to the deviation of the material.
In practice it has been shown that very high adjustment costs are required for accurate processing of the material web, even more so when inaccuracies of previous working steps have to be taken into account in subsequent processing steps, positioning marks can be introduced for subsequent processing with other processing tools in processes, for example parts of the material web can be punched or fold lines can be provided in the processing device, for example, in order to calibrate the subsequent processing with the previous processing and thus to take into account errors that may occur in the previous processing, the edges of the material web or fold lines around the punched part of the material web can be used as positioning marks for the subsequent processing steps, for example to calibrate the subsequent processing in the position of the punching or folding.
Furthermore, the slippage that occurs during the transport of the material web and/or the acceleration or deceleration of the transport speed of the strip material web can lead to the positioning marks not being detected by the sensor in a precisely timed sequence as specified in the introduction , that is to say, deviations of the regularity of the detection of the positioning marks and deviations of the position of the processing tool from the position set for the processing tool occur independently of one another.
With increasing attention to more efficient production and lower individual-part costs is always seeking to increase the web speed and the acceleration of the material web during the processing of the material web, but this in turn leads to an insufficient speed of adjustment or to an insufficiently accurate elimination or avoidance of errors relating to the material web and/or the processing tools.
Disclosure of Invention
The object of the invention is therefore to design and develop a method and a device of the type mentioned at the outset in such a way that high speeds and accelerations during the start-up of the device for processing a material web can be achieved, while at the same time the reject rate remains low.
This object is solved according to claim 1 by a method for regulating the processing of a material web, in particular a packaging material web, which is guided past a processing device for processing purposes and has a positioning mark, in which method,
-guiding the positioning marks past at least sensors detecting the positioning marks,
the evaluation device detects the deviation between the actual position of at least machining tools of the machining device corresponding to the detection of the positioning identifier by at least sensors and the position of the at least machining tools set for the same detections,
the adjusting device adjusts the actual machining position of the at least machining tools by means of the deviation between the actual position of the at least machining tools and the set position of the at least machining tools obtained by the analyzing device,
in accordance with the sequential detection of the positioning marks by at least sensors, the evaluation device obtains the actual spacing of the positioning marks occurring in sequence with one another on the basis of the measuring system of at least drive rollers, in particular on the basis of the angular difference and/or the circumferential length difference of the drive rollers, and correlates it with the expected spacing of the positioning marks on the basis of the measuring system of at least drive rollers,
deriving a preliminary control value by means of a relationship between the actual and the expected spacing of the positioning markers and
-control means, preferably pre-control means, for matching the speed of the at least processing tools based on the derived pre-control value.
The aforementioned object is also solved in an apparatus according to the subject matter of claim 12 in that an evaluation device is formed for determining a preliminary control value as a function of the speed of the material web in at least sensor zones by means of the detection of the position marks by at least sensors which are carried out in succession to one another, wherein the preliminary control value is determined on the basis of a measuring system of at least drive rollers based on position markers which occur in succession to one another, in particular on the basis of a relationship between the actual spacing of the angular difference and/or the circumferential length difference of the drive rollers and the expected spacing of the position markers of the measuring system of at least drive rollers, and a control device, in particular a preliminary control device, is provided for adapting the speed of at least processing tools as a function of the determined preliminary control value.
According to the invention, the adjustment of the position of the working tool of the working device is supplemented by the control of the speed of the working tool. The speed of the working tool is not obtained here from the speed of the material web drive itself, for example by means of the angular or linear speed of a roller or drum for driving the material web or by means of the rotational speed of a motor for driving the material web. Instead, the speed of the material web or a speed parameter corresponding to the speed of the material web is determined very accurately on the basis of the detection of the positioning marks that occur in succession to one another and thus. This high accuracy can be achieved in that the effective speed of the material web or a material web pre-control value corresponding to the effective speed of the material web is determined in the manner described, for example in the form of a speed parameter.
When the positioning marks are not arranged at exactly defined distances on the material web, for example because the previous processing of the material web, for example, to form the positioning marks, was carried out with errors, it is more dependent on the material web speed which is important for the processing to be carried out, that is to say the effective speed of the material web, than the actual speed of the material web or the defined web speed.
The detection of the web speed by means of the positioning marks is therefore also more accurate than the determination of the web speed by means of the drive of the material web, whether it be a motor, the speed of a drive roller or other parameters, because in this way and the slip between the drive and the material web and/or the extension of the material web during its transport are determined.
Finally, the detection of the effective speed of the material web allows the speed of the processing tool to be adapted to the effective web speed. But here the speed of the working tool is not adjusted but controlled. Such control is characterized by an open onset in which input values influence output values according to a certain regularity or setting, without continuously monitoring or modifying the influencing effect. In contrast, during regulation, an output value, also referred to as a regulating value or an actual value, is continuously detected and compared with a reference value or a setpoint value. The regulation is therefore characterized by a closed course of action, the so-called control loop, the purpose of which is to match the output value to a reference value or a setpoint value.
In other words, the speed of the processing tool is increased when an increasingly greater effective web speed is measured, and the speed of the processing tool is decreased when a decreasing effective web speed is measured. Since the speed of the working tool for working the material web can usually be set very precisely and reproducibly, in the present invention, a continuous detection of the working tool speed can preferably be substantially omitted and can be set by comparison with the set working tool speed. Furthermore, the control device allows for the fact that the desired speed of the working tool does not have to be kept constant, for example, but can be changed rapidly as required, which is particularly suitable for starting and stopping the device for working a material web. As a result, the adjustment can be very easily unsatisfactory and result in inaccurate or unstable operation of the device.
The material web, in particular the packaging material web, is particularly advantageous because the method can be used in these material webs, in particular in packaging materials in the form of packaging material laminates which, in the case of paperboard/plastic packaging material laminates, can have at least inner paperboard layers and outer, in particular printed, sealable plastic layers, usually at least further layers for this purpose, in particular of aluminium, are used to form packages which are usually intended for enclosing food materials.
The material web can be driven simply, reliably and very precisely by at least drive rollers, where there can be a frictional connection between the drive rollers and the material web, whereby, for example, the material web is driven substantially at least at the linear speed of the drive rollers, the linear speed of the drive rollers and the web speed can correspond to one another, when driven by the drive rollers, a pre-controlled value, for example in the form of a speed parameter, obtained by means of detection of the location markers by means of at least sensors can be simply associated with a measuring system of at least drive rollers, whereby, for example, the detection of location markers occurring in sequence with one another can be associated with the distance the drive rollers continue to turn between the detection of location markers occurring in sequence with one another.
The evaluation device also obtains the actual spacing of the position markers, which occur one after the other, on the basis of the measuring system of at least drive rollers, in particular on the basis of the angular difference and/or the circumferential length difference of the drive rollers and correlates it with the expected spacing of the position markers on the basis of the measuring system of at least drive rollers.
In other words, a preliminary control value can be obtained by means of the relationship between the actually measured distance between the positioning marks and the expected distance between the positioning marks of the drive-roller-based measuring system, which can then be fed into a control loop.
The association with the drive roller measuring system can be achieved, for example, by ascertaining, in each detections of alignment marks, how far a particular reference point along the periphery of the drive roller is from a reference position on the periphery of the drive roller, which distance can be, for example, 300mm (L1) for a certain detection and 405mm (L2) for a subsequent detection, when two alignment marks that appear one after the other are theoretically expected to have a distance of 100mm (lt), then in the subsequent detections the distance of the reference point from the reference position is actually expected to be 400mm, whereby the corresponding difference between the actual and expected values associated with the measuring system is 5mm (ld) and can be used to determine the advance control value.
LD＝L2-L1+LT
For this purpose, it is expedient to first normalize the measured length value to a desired length value, which normalization can be used as a preliminary control value or to determine a preliminary control value, for example in the form of a speed parameter (VD), for which purpose the linear speed (VA) of the drive roller can be used.
VD＝VA·(LT-LD)/LT
In addition to the circumferential length or the circumferential distance, the calculation of the preliminary control value described in the previous example can also be carried out by means of an angular difference between the reference point of the drive roller and the angular reference of the drive roller.
The method and apparatus of the foregoing kind are described below for better intelligibility and to avoid unnecessary repetition, without distinguishing in detail between the method and apparatus.
In a th preferred embodiment of the method, the evaluation device determines, as a pre-control value, a speed parameter that is dependent on the web speed of the material web in at least sensor zones on the basis of a measuring system of at least drive rollers.
In the case of a processing device or processing tool, the position of the processing tool can be adjusted in a simple manner, for example, by rotating the processing tool about an axis, simple movements which can be maintained at a constant speed, for example.
The working position of the at least working tools can also be adjusted by a short-term, in particular pulsed, acceleration and/or deceleration of the working tool speed, irrespective of the type of movement of the drive and the working tool, whereby the position of the at least working tools can be easily adapted to the section of the material web to be worked.
Alternatively or additionally, it is advantageous for a stable and rapid adjustment when the machining positions of at least machining tools are adjusted by means of a control loop by a short acceleration or braking or deceleration of at least machining tools moving at a set speed.
The use of this method is particularly advantageous when at least processing tools are cutting tools, punching tools, stamping tools, folding tools, punching tools and/or printing tools.
Furthermore, the method is particularly effective when using a material web in the form of a packaging material web, preferably made of a packaging material laminate, in particular a paperboard/plastic packaging material laminate. The corresponding material web cannot be processed satisfactorily in the known methods.
The method may also include the step of cutting the web of material to form a cut-out or a cut-out, the cut-out or cut-out being made by a cutting device, the cutting device being adapted to cut out or cut out the material web.
In order that at least sensors do not inadvertently detect further markers as positioning markers to be detected, a so-called control device can be used, which releases windows, which are time-dependent and/or length-dependent, for example, relating to a material web measuring system, in which windows detection of positioning markers is permitted, only then is a positioning marker detectable by at least sensors or the detection result can only be transmitted to an evaluation device or processed by the evaluation device at this time, the respective window is determined by means of the detection of positioning markers by at least sensors, whereby the window is always opened specific time periods or the length of a specific material web, in which time periods the next positioning markers are awaited, because the spacing of the positioning markers is at least approximately known, an estimation can be made by means of the detection of the upper positioning markers positioning markers and, as required, additionally by means of the speed of the material web, for example, when the next positioning marker should be detected and then the release device has a further window width of the next positioning marker , which is additionally set in particular , which is to be opened.
In order to accurately relate the detection to the measuring system of the drive roller, it is advantageous if the respective roller has a roller sensor for detecting parameters of the measuring system, in particular the detection angle, the angular difference of the circumferential length and/or the circumferential length difference, which depend on at least rollers.
Drawings
The invention is next explained in steps by means of a diagram showing only embodiments, in which:
fig. 1 shows a schematic view of a method according to the invention and an apparatus according to the invention, and
fig. 2 shows a flow chart of a method and apparatus.
Detailed Description
Fig. 1 shows an apparatus 1 for processing a material web 2 in the form of a packaging material web made from a packaging material laminate. The packaging material laminate is a paperboard/plastic laminate having a paperboard layer, an aluminum layer and an outer printed polyethylene layer. The material web 2 can be unwound from a take-up roll or transported in another way to the device 1. The material web 2 is transported in a straight line through the device 1 shown and preferred here. This is not mandatory, but the illustration is simplified. In the device 1 shown and preferred here, the material web 2 is driven by a drive roll 3, for which purpose the material web 2 is guided through a nip 4 between the drive roll 3 and a pressure roll 5. The nip 4 is so narrow that a frictional connection can occur between the drive roller 3 and the material web 2. The drive roller 3 is driven by a drive 6, in particular by a motor drive.
The material web 2 is transported to the right and guided past a sensor 7, the device 1 shown and preferred here being an optical sensor 7, but if necessary further sensors and/or further sensors can be provided, the sensor 7 being configured such that it can recognize positioning marks 8 provided on the material web 2 with printed marks when they pass the sensor 7, the material web 2, after the material web 2 has passed the sensor 7, is fed into a processing device 9 with processing tools 10, the processing device 9 shown and referred to in the preferred device 1 is used to divide the material web 2 into individual cut pieces which can be used as packaging material cut pieces for forming packaging, in particular for inserting food material, the processing device 9 has a processing tool 10 in the form of a processing roller with two cutting blades 11, the processing roller is rotated in the transport direction T of the material web 2, whereby the cutting blades 11 are guided past a further cutting blade arranged on the material web 2 side and the material web 2 is driven in the transverse direction T by a motor 13 for driving the processing device 10.
Alternatively or additionally, however, other processing tools can also be provided, which, for example, print, perforate, stamp, slot or stamp the material web 2. Furthermore, instead of printed markings, fold lines, notches, perforations, material differences or other features of the material web 2 can also be used as positioning marks 8. Thus, sensors other than the optical sensor 7 can also be advantageously used here, depending on the requirements.
A roller sensor 14 and a position sensor 15 are assigned to the drive roller 3 and the processing tool 10, which detect the position of the rollers 3, 10 and transmit this position in the form of a signal S to an evaluation device 16. Likewise, when the locating mark 8 passes the sensor 7, the sensor 7 detecting the locating mark transmits a signal S to the evaluation device 16. Thus, the analysis device 16 can compare the machining position of the machining tool 10 when the positioning mark 8 is detected or the machining position of the machining tool 10 corresponding to the detection of the positioning mark 8 with the machining position of the machining tool 10 set for the detection. If a deviation between the actual machining position and the set machining position is determined, an adjustment intervention is carried out by means of the adjusting device 17, which adjustment intervention influences the drive 13 of the machining device 9 in such a way that a corresponding deviation of the machining position is reduced or eliminated as far as possible. In the method shown and preferred here, this is done by a short-term or pulsed acceleration or deceleration of the speed of the working tool 10.
The evaluation device 16 can also derive a speed parameter from the detection of the position markers 8, which occur one after the other, by means of at least sensors 7, which depends on the web speed of the material web 2 in the region of the at least sensors 7, the evaluation device 16 correlates the web speed to the measuring system of the drive roller 3 by correlating the angle over which the drive roller 3 is further rotated between the two detections, it can be derived whether the expected spacing of the position markers 8 in terms of time and/or length of the material web 2 and the spacing of the position markers 8, which is actually measured, likewise in terms of time and/or length of the material web 2, correspond to , if not, for example because the position markers 8 do not have a set spacing, a slip occurs during the transport of the material web 2 or an extension of the material web 2 occurs, the speed of the processing tool 10 can be adapted accordingly by the control device 18, furthermore, the adjustment and the control of the processing position of the processing tool 10 can be carried out independently of this, an adjustment value U is generated which acts on the drive 13 of the processing roll 10 of the processing device 9, superimposed on each other as required.
The illustrated method is shown in more detail in fig. 2. Accordingly, like components are identified by like reference numerals. The speed (setpoint value) of the working tool 10 is set as the reference variable W and, if necessary, a particularly constant deviation (compensation) is set for it. The speed of the working tool 10 can thus be set in correspondence with the speed of the drive roller 3 for driving the material web 2. The regulator R provides an adjustment value U in accordance with the corresponding reference value W, which drives the drive of the machining tool 10 accordingly.
When a deviation between the set machining position of the machining tool 10 and the actual machining position of the machining tool 10 occurs when the positioning mark 8 is detected by the sensor 7, the comparison unit D1, which contains the information E about the detection and the information P about the position of the machining tool, sends a signal S depending on the magnitude and sign of the deviation to the position control device PR, which superimposes the corresponding control value U on the control value U sent from the controller R, when, alternatively or additionally, the effective web speed obtained by the detection of the positioning mark 8 by the sensor 7 and the web speed expected by the drive roller 3 do not result in , the comparison unit D2, which contains the information E about the detection and the information L about the measuring system of the drive roller 3, sends a signal S depending on the magnitude and sign of the corresponding deviation to the calculation unit B, which calculates a correction speed depending on the corresponding signal S, which is then fed as the reference value W to the correction speed control device KR, which itself feeds the control value U, which superimposes the correction value U on the previously determined value.
the control device T receives information E about the detection and, with the aid of this information and, if required, additional web speed parameters, determines a window from the time and/or material web position within which the next detections can be expected and transmits the information relating to this window as -day control device information TS to the sensor 7, no detections take place outside this window or the corresponding detection processes are processed further in the described manner.

Claims (24)

1. Adjustment method for processing a material web (2) having positioning marks (8) and guided through a processing device (9) for processing purposes,
-driving the material web (2) by means of at least drive rollers (3),
-guiding the positioning marker (8) past at least sensors (7) detecting the positioning marker (8),
-the analysis device (16) acquires the deviations between the actual positions of at least machining tools (10) of the machining device (9) corresponding to the detection of the positioning marks (8) by at least sensors (7) and the positions of the at least machining tools (10) set for detections,
-an adjusting device (17) adjusts the actual machining positions of the at least machining tools (10) by means of the deviation between the actual positions of the at least machining tools (10) obtained by the analyzing device (16) and the set positions of the at least machining tools,
-according to the successive detection of the positioning marks (8) by at least of the sensors (7), an analysis device (16) obtains the actual spacing of the positioning marks (8) occurring in succession to one another on the basis of a metrology system of at least drive rollers (3) and correlates it with the expected spacing of the positioning marks (8) on the basis of the metrology system of at least drive rollers (3),
-deriving a pre-control value by means of a relation between an actual and an expected spacing of the positioning marks (8) and
-the control device (18) matching the speed of the at least machining tools (10) according to the derived pre-control value.
2. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
characterized in that the method is used for the adjustment of the processing of a packaging material web.
3. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
characterized in that, in the method, in accordance with the sequential detection of the positioning marks (8) by at least sensors (7), an evaluation device (16) obtains the actual distances of the positioning marks (8) occurring in sequence from one another on the basis of the angular and/or circumferential length differences of the drive rollers (3) and correlates them with the expected distances of the positioning marks (8) of the measuring system based on the at least drive rollers (3).
4. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
characterized in that the control device (18) is a pre-control device.
5. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, the analysis device (16) acquires, as a pre-control value, a speed parameter that is dependent on the web speed of the material web (2) in the region of at least of the sensors (7) on the basis of the at least drive roller (3) measuring system.
6. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, the at least processing tools (10) are driven by an electric motor and rotate about axes which are each oriented in the region of the processing device (9) parallel to the material web (2) and perpendicular to the transport direction (T) of the material web (2).
7. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, the machining position of the at least machining tools (10) can be adjusted at least by short-term acceleration and/or deceleration of the speed of the at least machining tools (10).
8. The method of claim 7, wherein the first and second light sources are selected from the group consisting of,
characterized in that said acceleration and said deceleration are pulsed.
9. The method according to claim 1, in which method,
-adjusting the machining position of at least machining tools (10) by short acceleration or braking of at least machining tools (10) moving at a set speed by means of a regulating circuit, and/or
-increasing or decreasing the set speed of the at least machining tools (10) by a pre-control.
10. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, cutting tools, perforating tools, stamping tools, folding tools, punching tools and/or printing tools are used as the at least processing tools (10).
11. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, a packaging material web made of a packaging material laminate is used as the material web (2).
12. The method of claim 11, wherein the first and second light sources are selected from the group consisting of,
characterized in that in the method a packaging material web made of a paperboard/plastic packaging material laminate is used as the material web.
13. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, printed marks, imprints, creases, cuts and/or material differences, which are integrated in the decorative pattern or are provided in addition to the decorative pattern, are used as positioning marks (8).
14. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
in the method, the release device or control device gives time-dependent and/or length-dependent windows for the next expected detections by detecting the position mark (8) by at least sensors (7), in which windows the position mark (8) is detected by at least sensors (7), transmits the detection result to the analysis device (16) and/or processes it on the analysis device.
15. Device (1) for carrying out the method according to any of claims 1 to 14 at for processing a material web (2) on a processing device (9) having at least processing tools (10), having at least drive rollers (3) for driving the material web (2), at least sensors (7) for detecting positioning markers (8) of the material web (2) guided past the sensors (7), an evaluation device (16) for determining a deviation between the actual positions of at least processing tools (10) of the processing device (9) corresponding to the detection of the positioning markers (8) by at least sensors (7) and the positions of the at least processing tools (10) set for the detections, and an adjustment device (53917) for adjusting the actual processing tool positions () of the at least processing tools (10) by means of the deviation between the actual positions and the set positions of the at least processing tools (10) determined by the evaluation device (16),
characterized in that an evaluation device (16) is formed for acquiring a pre-control value depending on the speed of the material web (2) in the region of at least sensors (7) by means of the detection of the positioning marks (8) by at least sensors (7) in sequence with one another, wherein the pre-control value is acquired on the basis of a relationship between an actual spacing of the positioning marks (8) occurring in sequence with one another according to a measuring system of the at least drive rollers (3) and an expected spacing of the positioning marks (8) according to a measuring system of the at least drive rollers (3), and in that a control device (18) is provided for adapting the speed of the at least processing tools (10) on the basis of the acquired pre-control value.
16. The apparatus as set forth in claim 15, wherein,
characterized in that the device is used for processing a packaging material web.
17. The apparatus as set forth in claim 15, wherein,
characterized in that the pre-control value is obtained on the basis of a relationship between an actual spacing of the positioning marks (8) occurring in sequence with one another according to an angular difference and/or a circumferential length difference of the drive rollers (3) and an expected spacing of the positioning marks (8) according to the metrology system of the at least drive rollers (3).
18. The apparatus as set forth in claim 15, wherein,
characterized in that the control device is a pre-control device.
19. The apparatus as set forth in claim 15, wherein,
characterized in that the at least processing tools (10) are driven by an electric motor and the at least processing tools (10) rotate about axes which are each oriented parallel to the material web (2) and perpendicular to the transport direction (T) of the material web (2) in the region of the processing device (9).
20. The apparatus as set forth in claim 15, wherein,
characterized in that a roller sensor (14) is provided for detecting a parameter dependent on the gauging system of the at least drive rollers (3).
21. The apparatus as set forth in claim 20, wherein,
characterized in that the parameter is the difference in the angle and/or the difference in the circumferential length of the drive roller (3) between two detections.
22. The apparatus as set forth in claim 15, wherein,
characterized in that the at least machining tools (10) are assigned position sensors (15) which detect the position of the at least machining tools (10).
23. The apparatus as set forth in claim 15, wherein,
characterized in that the at least processing tools (10) are cutting tools, perforating tools, stamping tools, blanking tools and/or printing tools, and/or the material web (2) is a packaging material web produced from a packaging material laminate, and/or the positioning marks (8) are printing marks, stamping, perforating, creasing, blanking and/or material differences integrated in the decorative pattern or provided in addition to the decorative pattern.
24. The apparatus as set forth in claim 23, wherein,
characterized in that the material web (2) is a packaging material web made of a paperboard/plastic packaging material laminate.
CN201680075291.8A 2015-12-21 2016-11-15 Method for adjusting a material web process by means of positioning marks and device for carrying out the method Expired - Fee Related CN108473264B (en)

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PCT/EP2016/077696 WO2017108269A1 (en) 2015-12-21 2016-11-15 Method for regulating the processing of a material web on the basis of register marks, and apparatus for carrying out the method

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