WO2023041503A1 - Dispositif et procédé d'application de parties d'une bande de matériau sur des flans individuels destinés à la fabrication d'un emballage - Google Patents

Dispositif et procédé d'application de parties d'une bande de matériau sur des flans individuels destinés à la fabrication d'un emballage Download PDF

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Publication number
WO2023041503A1
WO2023041503A1 PCT/EP2022/075347 EP2022075347W WO2023041503A1 WO 2023041503 A1 WO2023041503 A1 WO 2023041503A1 EP 2022075347 W EP2022075347 W EP 2022075347W WO 2023041503 A1 WO2023041503 A1 WO 2023041503A1
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WO
WIPO (PCT)
Prior art keywords
buffer
functional unit
application
carriage
deflection
Prior art date
Application number
PCT/EP2022/075347
Other languages
German (de)
English (en)
Inventor
Albert Slot
Johannes Slot
Original Assignee
Albert Slot
Johannes Slot
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Albert Slot, Johannes Slot filed Critical Albert Slot
Publication of WO2023041503A1 publication Critical patent/WO2023041503A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8126—Applying strips or strings, e.g. tear strips or strings parallel to the direction of movement of the webs or the blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8129—Applying strips or strings, e.g. tear strips or strings the webs or blanks moving during application of the strips or strings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes

Definitions

  • the innovation presented here relates to the technical field of applying (placing) sections of a material strip (material web) on individual paper or cardboard cuts (cuts) or another material web, in particular cuts for packaging.
  • the innovation presented here relates to a device and a method for applying (placing) sections of a strip of material on individual blanks or another web of material in this way.
  • Sections of a strip of material are understood here and below to mean, in particular, sections from a silicone paper roll and/or sections from a tear-open thread roll.
  • Such silicone paper sections are used in a manner known per se in order to cover a splice applied to a blank until it is used.
  • Such tear-open thread sections are also used in a manner known per se in order to add a tear-open thread to the respective blank, which can be used in packaging made from the blank for easy opening of the packaging at a point determined by the position of the tear-open thread.
  • Such silicone paper sections, tear-off thread sections or the like, referred to here and below as sections, are placed individually on a blank in each case by means of a device referred to below as an application device or simply as an applicator and are separated from the material strip before, during or after placement (section).
  • the application device - the applicator - is a device for applying sections of a material web to individual blanks intended in particular for the production of packaging or individual blanks of a general type.
  • Such a device is already known from DE 102014204844 A1.
  • One object of the innovation presented here is to specify a further embodiment of an application device or part of an application device and a method for its operation.
  • an application material feed device having the features of claim 1 .
  • This (the application material feeder) is intended for use with an application device.
  • the application material feed device is preferably a functional unit that can be combined in a modular manner with the application device, that is, to a certain extent, an unwinding and feed module.
  • the application device is intended for placing the respective application material, in particular for placing a section of a strip of material, on a blank, in particular on a blank provided for producing a packaging and possibly already folded and/or glued and/or glued together Blank or a blank in the form of another web of material.
  • the application material feed device is a material strip feed device.
  • the application material feed device is part of an application device or can be combined with other units—for example a so-called application head—, devices or the like to form an application device.
  • the application material feed device proposed here comprises two functional units, each of which acts as a material buffer for the material strip running through the application material feed device.
  • These functional units act as material buffers because a part of the quantity of the material strip is stored (buffered) there by a dynamic change in the path length of the material strip running through the application material feed device.
  • these functions tion units corresponding means, namely means for dynamically changing the path length of the strip of material within the respective functional unit, and during operation of the application material supply device, the path lengths of the strip of material within these functional units are automatically changed dynamically. Increasing the path length increases the amount of material buffered, and decreasing the path length reduces the amount of material buffered.
  • the application material feed device comprises two such functional units, namely two such functional units following one another along the direction of the material strip running off, for one and the same material strip, there is multiple decoupling between an input side and an output side of the application material feed device.
  • the two functional units are referred to below as functional buffer units according to their purpose and as a first functional buffer unit and a second functional buffer unit to differentiate between them.
  • Each of the two buffer functional units acting as a material buffer is assigned its own drive (actuator, drive device) and its own sensor system.
  • the drive device assigned to the second buffer functional unit as an actuator is located along the direction in which the strip of material runs between the two buffer functional units, ie downstream of the first buffer functional unit and upstream of the second buffer functional unit.
  • the set speeds of these drives are dependent on the speed of a basic machine and a material requirement of the application device and are adapted on the basis of measured values that are obtainable by means of a sensor system of the respective buffer functional unit that is included in the application device.
  • the advantage of the application material feed device proposed here compared to the material strip transport in DE 102014204844 A1 is that few and comparatively simple sensors and actuators are used and that different material strips are transported and fed to an application head with one and the same application material feed device (after being equipped with a corresponding material). can.
  • an application material feed device of this type tion device (one after the other) different strips of material are placed on the respective blank or the respective blanks.
  • a further advantage of the application material supply device proposed here is that the second buffer functional unit acts as a fast buffer functional unit and that the first buffer functional unit acts as a comparatively less fast buffer functional unit.
  • the second buffer functional unit uses the first buffer functional unit to compensate for already predamped fluctuations in the supply and, above all, for short-term or momentary fluctuations in the material requirement of the application device, with high dynamics in the withdrawal of the material strip.
  • the first buffer functional unit compensates for fluctuations in the supply caused by changing unwinding speeds of the drum and for fluctuations already predamped by the second buffer functional unit when the strip of material is drawn off with less dynamics.
  • drum drive device This avoids, for example, frequent acceleration or deceleration of the drum intended for feeding the strip of material to the application material feed device up to possible switching on and off of a drive device of the drum (hereinafter referred to as drum drive device) and/or at least reduces the frequency of acceleration or deceleration of the Drum or switching on and off such a drive device.
  • EP '149 and DE 793 Devices for connecting a tear-open thread to a film web are known from EP 0 703 149 B1 and DE 10 2018 003 793 A1—hereinafter EP '149 and DE 793, respectively.
  • the film web is used to wrap a packet of cigarettes and the tear-open strip it includes makes it easier to open the wrapping.
  • the apparatus each includes means for transporting the film web and tear-open string to a location where the tear-open thread is joined to the film web, and then means for transporting the resulting combination of film web and tear-open string.
  • the devices also each include two buffer functional units.
  • the buffer functional units included therein pick up the same application material one after the other
  • the buffer functional units there successively pick up different material namely only the tear-open thread in each case in a first functional buffer unit and the combination of film web and tear-open thread in each case in a second buffer functional unit, with the connection of film web and tear-off thread takes place between the two buffer functional units.
  • the two buffer functional units of EP '149 and DE '793 are only comparable with the two buffer functional units of the application material feed device proposed here in terms of their number and not in terms of their function.
  • any speed differences between the two materials to be combined upstream of the first buffer function unit, tear-open thread and film web are compensated for by means of the respective first buffer function unit. Without a need for such a combination of materials, the respective first buffer functional unit would be unnecessary in the devices of EP '149 and DE '793.
  • the method can also be developed by means of individual or multiple method features that relate to method steps carried out by or by means of the application material feed device.
  • the application material feed device can be further developed by physical means which are intended and/or set up/prepared for carrying out method steps carried out as part of the method.
  • a respective actuator (drive, drive device) of each buffer functional unit is acted upon by a control signal that can be generated at least on the basis of a measured value of a sensor system included in the respective buffer functional unit.
  • a control signal is automatically generated by the feed device, namely, for example, by means of a control unit of the application material feed device and an implementation of the method there, in particular an implementation in the form of a control program.
  • control device that works according to the method as described here and below and for this purpose includes means for carrying out the method.
  • the control device is intended and set up to control an application material feed device and to control and/or regulate the actuators of the first and second buffer functional unit comprised by the application material feed device.
  • the control device acts as a means for determining a speed setpoint for one actuator in each case of the first and second buffer functional unit, the respective speed setpoint being determined and generated at least also on the basis of a measured value obtainable from a sensor system in the respective buffer functional unit.
  • control program computer program
  • the innovation presented here is therefore also a computer program with program code instructions that can be executed by a computer with an implementation of the method proposed here and possibly individual configurations as well as a storage medium with such a control program (computer program), i.e. a computer program product with program code means, and finally also a control device, in whose memory such a control program (computer program) is or can be loaded as a means for carrying out the method and its configurations.
  • process steps or process step sequences are described below (“is detected”, “is determined”, “is generated”, “is applied”, etc.), this refers to actions that are under control or due to the functionality of the control device, in particular due to of the control program or under the control of the control program. Furthermore means any indication of an automatic process that it runs under the control or due to the functionality of the control device, in particular due to the control program or under the control of the control program.
  • control program and computer program can also be implemented entirely or partially in the form of firmware or hardware. It is clear to a person skilled in the art that instead of implementing a method in software, it can always be implemented in full or in part in firmware or in firmware and software or in firmware and hardware. It should therefore apply to the description presented here that the terms control program and computer program also include other implementation options, namely in particular an implementation at least partially in firmware and/or at least partially in firmware and software or at least partially in firmware and hardware.
  • the second buffer functional unit comprises a carriage that can be moved along a path, in particular a carriage that can be moved along a linear guide, namely a carriage with a deflection for the material strip, as a means for dynamically changing the path length of the material strip within the second buffer functional unit.
  • the second buffer functional unit comprises an input-side deflection roller and an output-side deflection roller (or generally an input and output-side deflection device device, for example a deflection rod, in particular a round rod, a deflection plate, a deflection device with an air cushion deflection or the like) and the material strip runs within the second buffer functional unit from the input-side deflection roller (deflection device) to the carriage and from there to the output-side deflection roller (deflection device).
  • the carriage acts as a means of dynamically varying the path length of the material strip because the displacement/position of the carriage determines the path length of the material strip within the second buffer engine. The further the carriage is deflected, the greater the path length.
  • Such a movable carriage each with a fixed point for the deflection of the material strip upstream (input side) and downstream (outlet side) of the carriage in the form of deflection rollers (deflection devices) is a comparatively simple, but above all very fast mechanism for dynamically changing the path length of the material strip within the second buffer functional unit.
  • deflection roller also includes the more general term “deflection device” and in this respect, for example, a deflection rod, in particular a round rod, a deflection plate or the like includes.
  • a deflection roller is nevertheless a particularly advantageous embodiment of a deflection device because the rotatability of the deflection roller avoids friction losses when the material strip is advanced.
  • a respective deflection of the carriage results from a force and counterforce acting on the carriage.
  • the force acts on the carriage due to the deduction of the strip of material guided over the carriage. This occurs during operation of the application material feed device due to the web tension resulting from the removal of the strip of material from the application material feed device.
  • the force resulting from the web tension is referred to below as the web tension force.
  • the web tension force pulls or pushes the carriage in a first direction (towards the deflection rollers/deflection devices).
  • the opposing force acts on the web tension force counteracts, pulls or pushes the carriage in a second direction opposite to the first direction and causes a deflection of the carriage, namely a deflection in which the path length of the material strip within the second buffer functional unit increases compared to a situation without an effective counterforce.
  • the web tension and thus the respective effective web tension force change dynamically during operation of the application material feed device.
  • the counterforce can be applied in different ways. Various options are explained below.
  • the carriage can be moved in a spring-loaded manner along the path due to the spring force of a spring system (the counterforce results from the spring force of the spring system).
  • the spring force of the spring system pushes or pulls the carriage against the web tension force in the second direction.
  • a vertical or essentially vertical orientation of the track can also be considered.
  • the gravitational force then acts as a counterforce on the carriage and the web tension force counteracts this and lifts the carriage against the gravitational force.
  • a cable system or the like can also be considered.
  • a rope then acts on the carriage, which is guided over a deflection device and at the other end of which a weight hangs.
  • the gravitational force acts on the weight (counterforce).
  • the carriage movable along the path is pulled in the first direction by the web tension force and in the opposite, second direction due to the weight.
  • the counterforce can also be applied by means of compressed air. This pushes the carriage in the second direction when it hits the carriage, while the web tensioning force acts in the opposite first direction. All this ensures that the carriage tensions the strip of material within the second buffer functional unit.
  • counterforce device Said spring system is a counterforce device. Due to its weight, the slide itself can act as a counterforce device. ren.
  • Said cable system is a counter-force device and a device by means of which the carriage can be subjected to a stream of compressed air is also a counter-force device.
  • the counterforce can also be applied by means of negative pressure loading. This pulls the carriage in the second direction, while the web tension force acts in the opposite first direction.
  • the drive device assigned to the second buffer functional unit as an actuator can advantageously be controlled as a function of a deflection of the carriage, namely as a function of a deflection of the carriage along the path, and the drive device is controlled during operation of the application material feed device as a function of this deflection of the carriage.
  • the control takes place in that the drive device is acted upon by a control signal which can be generated at least also on the basis of a measured value of a sensor system comprised by the second buffer functional unit and is generated during operation of the application material feed device.
  • the control signal is generated automatically during operation of the application material feed device, for example by means of a control unit of the application material feed device and an implementation of the method there, in particular an implementation in the form of a control program.
  • the second buffer functional unit comprises a contactless position determination device as a sensor system, with a deflection of the carriage along the route being able to be determined contactlessly by means of the position determination device and being determined contactlessly during operation of the application material feed device as part of the method for operating the application material feed device.
  • the second buffer functional unit comprises a drive device with a driven and a non-driven wheel as an actuator, that one of the two wheels - for example the non-driven wheel - is particularly spring-loaded against the other wheel - for example the driven wheel - presses and holds a strip of material passing over the driven wheel in frictional contact with the driven wheel.
  • FIG. 1 shows a schematic representation of a device (application device) for placing a section of a strip of material on blanks transported past under a base machine
  • FIG. 3 shows part of the application device (application material feed device) from FIG. 1 with a first and second buffer functional unit included therein,
  • FIG. 4 shows an isometric view of the application material feed device in the area of the second buffer functional unit
  • FIG. 5 shows a schematically simplified illustration of the first and second buffer function unit and a signal flow from and to the first and second buffer function unit for controlling and/or regulating an actuator there in each case.
  • FIG. 1 shows an embodiment of an application device 10 in a schematically simplified form.
  • the application device 10 is located next to a device referred to as the base machine 12 .
  • the basic machine 12 is shown only in part and in a very simplified manner.
  • a device acts as the base machine 12 and comprises at least one transport device in the form of a conveyor belt or the like for transporting blanks 14 of the type mentioned at the outset that are moved by means of the base machine 12 .
  • the basic machine 12 is shown on the right-hand side.
  • the application device 10 is located laterally next to the base machine 12.
  • the base machine 12 is or usually includes an elongated transport device with a corresponding conveying path.
  • the conveying path runs transversely to the plane of the page and begins in front of the plane of the page and continues behind the plane of the page.
  • the application device 10 includes an application head 16 or such an application head 16 is at least functionally assigned to the application device 10 arranges.
  • Devices that can be considered as application head 16 are known per se and do not require any further explanation here.
  • a device such as that described in DE 102014204844 A1 mentioned at the outset and referred to there as a placement head can be considered as the application head 16 .
  • the application head 16 is used to actually place a section of a material strip 18 on paper or cardboard blanks 14 or the like (blanks 14) transported past under the application head 16 .
  • a section of the material strip 18 is a part of the material strip 18 that has been separated from the material strip 18, in particular a part that has been cut off.
  • the section of the material strip 18 is also separated from the material strip 18 by means of the application head 16, for example.
  • the respective section of the material strip 18 is placed by the application head 16 along the direction of movement of the blanks 14 or a blank 14 under the application head 16.
  • the respective section of the material strip 18 is also placed in such a way that the section of the material strip 18 in its entirety length or at least substantially in its entire length on the blank 14 transported past under the application head 16 .
  • An adhesive is or is applied to each blank 14 for this purpose.
  • the respective section of the material strip 18 is placed by the application head 16 in the area where the adhesive is applied.
  • a blank 14 transported from the base machine 12 into the region of the application head 16 is detected by means of a position sensor, for example a light sensor or the like.
  • a signal generated by the position sensor is evaluated to control the application head 16 .
  • a predetermined distance from a front edge of the blank 14 in the direction of transport is maintained. This distance can also be "negative", so that the section of the strip of material 18 protrudes beyond the front edge of the blank 14 .
  • the strip of material 18 is, for example, strip-shaped silicone paper or a tear-off thread; the application device 10 is then a silicone paper applicator or a tear-off thread applicator.
  • the approach described here and below can also be considered for a continuous web of material transported by means of the basic machine 12, just as it is for individual blanks 14, e.g Blanks, for example by punching or the like, are formed. So when we are talking about blanks 14 here, a respective material web (which is the result of a previous at least partial blank) and/or the surface sections of a continuous material web, which are only separated into blanks in a subsequent work step, should always also be included.
  • blanks 14 that have already been separated.
  • every mention of a blank 14 should always be read as "blank 14, a surface section of a web of material that can later be separated into a blank or a blank in the form of a web of material", because a web of material is basically nothing more than a "long" blank. If, in the case of individual blanks 14, the section of the material strip 18 to be laid is positioned using the edge (front edge) of the blank 14, for example, this can be done in the case of a continuous material web using markings on or in the material web (print mark or hole or perforation).
  • the application device 10 includes an application material feed device 20.
  • the material strip feed effected during operation by means of the application material feed device 20 takes place to the application head 16.
  • a respective supply of material strips forms the input of the application material feed device 20.
  • the material strip 18 runs in the direction of the application head 16.
  • Within the Application material feed device 20 is actively transported the material strip 18, ie the material strip 18 is transported by means of at least one actuator comprised by the application material feed device 20.
  • a passive transport of the material strip 18 in that the application head 16 also pulls the material strip 18 fed to it by means of the application material feed device 20 out of the application material feed device 20 .
  • the supply of material strips on the one hand and the application head 16 on the other are located at the entrance or exit of the application material feed device 20 with respect to the material strip 18 running within the application material feed device 20 or form the entrance or exit of the application material feed device 20.
  • This definition of the entrance and the output of the application material feed device 20 being point out. In the following, this is sometimes also referred to with terms such as “on the input side” or “on the output side”.
  • Feeding on the input side means, for example, feeding a quantity (length) of the material strip 18 into the application material feed device 20.
  • a feeding - or also a removal/removal - of a quantity of the material strip 18 this means a certain fed or removed/removed length of material strip 18.
  • Positions along the running strip of material 18 are sometimes referred to below as being “downstream” or “upstream” of the respective unit relative to individual units of the application material feed device 20 or the application device 10 .
  • the term “downstream” refers to a direction along the material strip 18 running off (in the direction of the outlet).
  • the term “upstream” correspondingly refers to the opposite direction.
  • the application head 16 is located downstream of the application material feed device 20 and the application material feed device 20 is located upstream of the application head 16.
  • a bridge element 22 runs from the application material feed device 20 into an area above the application head 16.
  • the bridge element 22 comprises at least one guide device, for example guide rollers acting as a guide device, for the material strip 18. Via the bridge element 22 the material strip 18 moves from the area of the application material feed device 20 to the application head 16.
  • the application material feed device 20 is sometimes referred to in the following for short as the feed device 20 and the further description concentrates on this and its details:
  • a control device 24 is provided for controlling and/or monitoring the delivery device 20 (or for jointly controlling and/or monitoring the delivery device 20 and the application head 16). This is located, for example - as indicated in the illustration in Figure 1 by the block arrow - in a control cabinet or control box 26 spatially assigned to the feed device 20 (for example located below the feed device 20).
  • the control device 24 includes as an implementation of the method for Operation of the application device 10, at least for the operation of the feeding device 20, for example a control program (computer program) 28 loaded into a memory of the control device 24.
  • the control device 24 processes at least one measured value 30, 32 originating from a sensor system of the feed device 20 and/or at least one measurement value 34 originating from a sensor system of the base machine 12 in a manner that is basically known per se.
  • the control device 24 generates on the basis of a included implementation of a method for operating the application device 10, at least for operating the delivery device 20, at least one control signal (output signal) 36, 38 for the delivery device 20 and an actuator included therein.
  • the representations in Figure 2 and Figure 3 show part of the application device 10 and there specifically the feed device 20, on the one hand, namely in Figure 2, in a view from the front as in Figure 1, and on the other hand, namely in Figure 3, in a View from the back of the application device 10.
  • the feed device 20 comprises two functional units each acting as a material buffer. There, a part of the quantity of the material strip 18 located in the area of the feed device 20 is stored (buffered) to a certain extent by a dynamic change in the path length of the material strip 18 running through the feed device 20 (and through the respective functional unit). Increasing the path length increases the amount of material buffered. If the path length is reduced, the amount of material buffered is reduced. Since the feed device 20 has two functional units of this type, there is multiple (i.e. double) decoupling between the input side and the output side of the feed device 20. The two functional units follow one another (not necessarily directly one after the other) along the direction of the material strip 18 running off. The first functional unit is upstream of the second functional unit. The second functional unit is downstream of the first functional unit.
  • Each buffer function unit 40, 60 has its own actuator and sensor system for dynamically changing the path length within the respective buffer function unit 40, 60.
  • the strip of material 18 is removed from a unit referred to below as a drum 42 within the feed device 20 and within the first buffer functional unit 40 .
  • the strip of material runs in the feed device 20 18 starting from the drum 42 via one or more deflection devices, for example deflection rollers, deflection plates or the like, in the direction of the application head 16.
  • the drum 42 comprises a core and the respective strip of material 18 is wound up on the core—belonging to the drum 42 (stock of material strips).
  • the strip of material 18 is, for example, so-called silicone paper, a tear-off thread or the like.
  • the feed device 20 described here and the application device 10 as a whole can also be used to handle any other type of paper or other materials that can be fed in strip form, for example reinforcing tape made of paper, plastic or fiber material, window film, viewing film, etc. so that a mention of silicone paper, for example, is merely exemplary and should not be construed as limiting.
  • the strip of material 18 can be removed from the drum 42 by rotating the drum 42 and during operation of the feed device 20 the strip of material 18 is removed from the drum 42 by rotating the latter.
  • drum 42 is driven and set in rotation, for example, by means of a drum drive device 44 comprised by feed device 20 (and first buffer function unit 40), namely an electric motor or the like, and/or braked by means of drum drive device 44, in particular driven in its core and/or braked.
  • the control or regulation of the drum drive device 44 and thus the rotational speed of the drum 42 takes place by means of and under the control of the control device 24.
  • the drum drive device 44 is an actuator of the feed device 20 (and an actuator of the first buffer functional unit 40), namely one with a generated by the control device 24 Control signal 36 actuator that can be acted upon.
  • the drum drive device 44 is generated by the control device 24 and encodes a desired value for the rotational speed of the drum 42 Control signal 36 applied to obtain a desired rotational speed (driven with a corresponding control signal 36).
  • the target value for the rotational speed of the drum 42 depends on the speed of the base machine 12 and a measured value 34 that can be recorded there by means of a corresponding sensor system and recorded during operation, which, for example, encodes a transport speed of blanks 14 transported past under the application head 16 by means of the base machine 12 (the faster the blanks 14 are transported and/or the closer two blanks 14 follow one another, the greater the target value for the rotational speed of the drum 42).
  • the measured value 34 encodes a material requirement of the application device 10 that is dependent on the speed of the basic machine 12.
  • a so-called dancer system 46 acts as a means for dynamically changing the path length of the material strip 18 there.
  • the function of a dancer system 46 and thus also the function of the dancer system 46 comprised by the first buffer functional unit 40 is basically known per se and, in the case of the feed device 20 proposed here—in a manner that is also basically known per se—is used, among other things, to obtain a uniform or at least substantially uniform Tension (web tension) of the material strip 18 running off is provided within the feed device 20 and within the first buffer functional unit 40 .
  • the dancer system 46 is optionally oriented vertically - as is the case in the embodiment shown - includes a measuring device 50 and an upper group of deflection rollers (upper deflection rollers 52) and a lower group of deflection rollers (lower deflection rollers 54). The upper deflection rollers 52 are fixed in their vertical position.
  • the lower pulleys 54 are vertically movable.
  • the vertical position of the lower deflection rollers 54 can be detected by means of the measuring device 50, for example a measuring device 50 in the form of a linear path sensor or the like, and this is detected during operation.
  • one deflection roller carrier carries the upper and lower deflection rollers 52, 54 in a basically optional manner.
  • the lower deflection roller carrier 56 is movable and the mobility of the lower deflection roller carrier 56 is referred to here as tilting mobility. This is described separately below in more detail.
  • the measuring device 50 is a sensor system included in the feed device 20 and belonging to the first buffer functional unit 40 . During operation of the feed device 20 , this generates a sensor signal as a measured value 30 that can be processed by the control device 24 . During operation of the feed device 20, this measured value 30 is processed by the control device 24 as described below:
  • the drum drive device 44 is controlled with a control signal 36 acting as a target value for the rotational speed of the drum 42 . Due to the rotation of the drum 42, a certain quantity of material strips (material strip supply; quantity of the material strip 18) per unit of time passes from the drum 42 into the feed device 20 and into the first buffer functional unit 40.
  • the quantity of material fed to first buffer functional unit 40 on the input side, i.e. material strip 18, is symbolically designated M1 Z below, and the quantity of material removed/removed on the output side, i.e. material strip 18, is symbolically designated M1 A below. If exactly the same amount of material strip 18 is always fed in at the inlet of the feed device 20 due to a corresponding rotation of the drum 42 as at the same time at the outlet (due to a deduction by means of the application head 16 and/or due to a deduction by means of the actuators of the second buffer functional unit 60) is removed, there is always a constant quantity of material strips in the first buffer functional unit 40 (the flow through the first buffer functional unit 40 is stationary with respect to the material strip 18).
  • the target value for the rotational speed of drum 42 is changed and a corresponding control signal 36 for drum drive device 44 is generated and applied to drum drive device 44 (when the lower deflection rollers 54, the setpoint is reduced; when the lower deflection rollers 54 rise, the setpoint is increased).
  • the adjustment of the target value for the rotational speed of the drum 42 can be implemented as open-loop or closed-loop control.
  • the respective implementation is part of the functionality of the control device 24, for example part of the functionality of the control program 28.
  • regulation regulation using a P controller, a PI controller or the like can be considered, for example.
  • the resulting target value for the rotational speed of the drum 42 on which the control signal 36 is based is a combination of a measured value 34 dependent on the speed of the base machine 12 and a measured value 30 resulting from the vertical position of the lower deflection rollers 54.
  • the adaptation (control or regulation) of the rotational speed of the drum 42 due to the vertical position of the lower deflection rollers 54 is thus superimposed on the adjustment (control or regulation) of the rotational speed of the drum 42 due to the speed of the base machine 12 .
  • the amount of material (amount of material strips) in the area of the dancer system 46 - in the area of the first buffer functional unit 40 - acts as a buffer (amount of material buffer) and causes at least an initial balance between the amount of material supplied on the input side and the amount of material removed on the output side. If more material is removed on the output side than is fed in at the same time on the input side, the buffer is emptied (the lower deflection rollers 54 rise) and a control signal 36 generated according to the position of the lower deflection rollers 54 leads to an increase in the rotational speed of the drum 42, so that the buffer is filled more.
  • the buffer is filled (the lower deflection rollers 54 lower) and a control signal 36 generated according to the position of the lower deflection rollers 54 leads to a reduction in the rotational speed of the drum 42, so that the buffer is filled less.
  • the feed device 20 includes the second buffer functional unit 60.
  • the representation in Figure 4 shows an isometric view of a section of the area of the feed device 20 with the elements mentioned of the second buffer functional unit 60. The further description refers to the representations in Figure 2 and Figure 3 as well as to the Representation in Figure 4.
  • Second buffer functional unit 60 includes between two deflection rollers (along the material strip 18 between two deflection rollers), namely an input-side deflection roller 62 and an output-side deflection roller 64 (generally between an input-output-side deflection device 62, 64) , a translationally movable carriage 66.
  • the representation in Figure 4 shows an isometric view of
  • the material strip 18 runs from the input-side deflection roller 62 to the carriage 66 and from there to the output-side deflection roller 64.
  • This carriage 66 functions within the second buffer functional unit 60 as a means for dynamically changing the path length of the material strip 18 there.
  • the carriage 66 is translationally movable along a path 68 and the strip of material 18 is/is guided over a deflection device comprised by the carriage 66, for example a deflection roller or a deflection plate or the like.
  • a linear guide 68 acts as a track 68 for the carriage 66.
  • a linear guide 68 is an advantageous option.
  • the section 68 can also be curved, for example.
  • two parallel, elongated, rod-shaped guide elements each having a connecting link for the straight guidance of the carriage 66 act as a linear guide 68 in a fundamentally optional manner.
  • the carriage 66 also includes, has or carries a flag 70.
  • This acts as a counterpart to a contactless position determination device 72, in particular a position determination device 72 in the form of a distance sensor 72.
  • This is a sensor system of the feed device 20 (and a sensor system of the second buffer functional unit 60 ).
  • this supplies a measured value 32 which encodes the distance between the flag 70 and the position determination device 72, ie the deflection of the carriage 66.
  • the distance measurement is preferably carried out without contact, because in this way a very light carriage 66 and the desired easy and, above all, rapid mobility of the carriage 66 can be ensured.
  • an electro-optical range finder or a laser range finder functions as the non-contact position determination device 72 .
  • the non-contact position determination device 72 by means of a series of Light barriers or other contactless switching switching elements can be implemented, namely in a row arranged along the route 68 .
  • An imaginary connecting line runs between the axis of rotation of the input-side deflection roller 62 and the axis of rotation of the output-side deflection roller 64 .
  • this imaginary connecting line runs—in a fundamentally optional manner—perpendicular or at least essentially perpendicular to the movement path of carriage 66.
  • This means that the length of the segment of material strip 18 in is about the same as the length of the segment of material strip 18 extending from carriage 66 to output-side deflection roller 64 .
  • the more the carriage 66 approaches the imaginary connecting line between the axes of rotation of the two deflection rollers 62, 64 the smaller the buffered quantity of material.
  • This guidance of the material strip 18 within the second buffer functional unit 60 is a restricted guidance, because the material strip 18 always runs along the input-side deflection roller 62 to the carriage 66 and from there to the output-side deflection roller 64.
  • carriage 66 is movable along path 68 in a spring loaded manner.
  • a spring system comprising at least one spring element, for example a spiral spring or an elastic and thus resiliently effective tension system, acts as a counterforce device and pushes or pulls the carriage 66 away from the imaginary connecting line between the axes of rotation of the two deflection rollers 62, 64.
  • a withdrawal of material by means of the application head 16 pulls or pushes the carriage 66 against the spring force of the spring system in the direction of the imaginary connecting line between the axes of rotation of the two deflection rollers 62, 64.
  • the respective position of the carriage 66 results from the force exerted by the respective counter-force device on the Slide 66 acting counter-force and due to the tension of the material strip 18 (web tension) and a resulting due to the web tension and opposite to the direction of the counter-force acting on the carriage 66 force.
  • the Web tension changes dynamically during operation of the feed device 20, namely depending on the withdrawal of the material strip 18 at the outlet of the feed device 20, the feeding of the material strip 18 at the entrance of the feed device 20 and the transport of the material strip 18 within the feed device 20. The changes accordingly due to the web tension resulting force (web tension force) dynamic.
  • the dynamic change in the web tensioning force leads to a dynamic and regularly very rapid movement of the carriage 66.
  • the respective position of the carriage 66 is detected by the position determination device 72. Due to the forces acting on the carriage 66 (web tension force, counterforce), the material strip 18 runs in a substantially straight line from the input-side deflection roller 62 to the carriage 66 and from the carriage 66 to the output-side deflection roller 64.
  • the path length of the material strip 18 in the second buffer functional unit 60 is known at all times or can at least be determined at any time.
  • a measured value 32 encoding the position of the carriage 66 acts as a basis for controlling a drive device 74 (upstream of the input-side deflection roller 62 and downstream of the first buffer functional unit 40).
  • the drive device 74 is a further actuator of the feed device 20 and an actuator of the second buffer functional unit 60.
  • the drive device 74 comprises a driven wheel, a driven roller or the like—hereinafter (without waiving any further generality) referred to as the driven wheel— , over which the strip of material 18 runs, as well as a non-driven wheel, a non-driven roller or the like — referred to below (without waiving any further generality) as the non-driven wheel — which, in particular, is spring-loaded and presses against the driven wheel and presses the strip of material 18 presses on the driven wheel and keeps in contact with it.
  • One is therefore sufficient for transporting the material strip 18 by means of the drive device 74 ensures frictional contact between the strip of material 18 and the driven wheel.
  • the drive device 74 is an actuator of the feed device 20 (and an actuator of the second buffer functional unit 60) that can be acted upon by a control signal 38 generated by the control device 24.
  • the drive device 74 is acted upon by the control signal 38 generated by the control device 24 and encoding a target value for the rotational speed of the driven wheel in order to obtain a desired rotational speed (controlled with a corresponding control signal 38).
  • the target value for the rotational speed of the driven wheel depends — like the target value for the rotational speed of the drum 42 (the target value for the actuator of the first buffer functional unit 40) — on the speed of the Base machine 12 dependent and a recordable there and recorded during operation measured value 34 (see above).
  • a certain amount of material (a certain length of the material strip 18) is always withdrawn from the area of the first buffer functional unit 40 within the feed device 20 by means of the drive device 74 and reaches the area of the second buffer functional unit 60 tensions the strip of material 18 within the second buffer functional unit 60.
  • the amount of material fed to the second buffer functional unit 60 on the input side, i.e. the material strip 18, is symbolically denoted below as M2Z and the amount of material removed/removed from the second buffer functional unit 60 by means of the application head 16 on the output side, i.e. the material strip 18, is symbolically denoted below labeled M2A.
  • the web tension force predominates in comparison to the counterforce and this leads to the deflection of the carriage 66 decreasing (the carriage 66 is therefore pulled closer to the imaginary connecting line between the axes of rotation of the two deflection rollers 62, 64 due to the web tension of the material strip 18).
  • the respective deflection of the carriage 66 can be detected by the position determination device 72 and is detected by the position determination device 72 during the operation of the feed device 20 .
  • the target value for the rotational speed of the driven wheel of the drive device 74 is changed and a corresponding control signal 38 is generated for the drive device 74 and the drive device 74 is acted upon with this ( with an increasing deflection of the carriage 66, the setpoint is reduced; with a decreasing deflection of the carriage 66, the setpoint is increased).
  • the adaptation of the target value for the rotational speed of the driven wheel of the drive device 74 can be implemented as open-loop or closed-loop control.
  • the respective implementation is part of the functionality of the control device 24, for example part of the functionality of the control program 28.
  • regulation regulation using a P controller, a PI controller or the like can be considered, for example.
  • the resulting desired value for the rotational speed of the driven wheel of the drive device 74 on which the control signal 38 is based is a combination of a measured value 34 dependent on the speed of the basic machine 12 and a measured value 32 resulting from the deflection of the carriage 66.
  • the adjustment (control or regulation) the rotational The speed of the driven wheel of the drive device 74 due to the deflection of the carriage 66 is therefore superimposed on the adaptation (control or regulation) of the rotational speed of the driven wheel of the drive device 74 due to the speed of the base machine 12.
  • the carriage 66 acts as a means for dynamically changing the path length of the material strip 18 within the second buffer functional unit 60, because the deflection of the carriage 66 determines the path length of the material strip 18 there. The further the carriage 66 is deflected, the greater the path length within the second buffer functional unit 60.
  • the deflection of the carriage 66 depends on acting forces.
  • the acting forces are, among other things, the tensile stress (web tension) acting on the material strip 18 due to the feed of the material strip 18 by the drive device 74 and due to the withdrawal of the material strip 18 by the application head 16.
  • the counterforce of the respective counterforce system acts on the carriage 66, for example the spring force of the spring system.
  • the dynamic change in the path length of the material strip 18 within the second buffer functional unit 60 also depends on the measured value, because the deflection of the carriage 66 is included in a control or regulation of the setpoint for the rotational speed of the drive device 74, and this in turn influences the deflection of the carriage 66.
  • the dancer system 46 acts as a means for dynamically changing the path length of the material strip 18 within the first buffer functional unit 40, because the position of the lower deflection rollers 54 determines the path length of the material strip 18 there.
  • the position of the lower deflection rollers 54 depends on the forces acting.
  • the acting forces include the tensile stress acting on the material strip 18 due to the feed of the material strip 18 by the drum drive device 44 and due to the withdrawal of the material strip 18 by the drive device of the second buffer functional unit 60.
  • the gravitational force acts on the lower deflection rollers 54 and the lower deflection roller carrier 56 carrying them.
  • the dynamic change in the path length of the material strip 18 within the first buffer functional unit 40 also depends on the measured value, because the position of the lower deflection rollers 54 is included in a control or regulation of the setpoint for the rotational speed of the drum drive device 44, and this in turn influences the position of the lower deflection rollers 54.
  • the change in the path length of the material strip 18 within the two buffer functional units 40, 60 is therefore also a dynamic change in the path length, because at different points in time during the operation of the feed device 20 different path lengths are effective.
  • the second buffer functional unit 60 is a fast buffer device compared to the first buffer functional unit 40 .
  • the second buffer functional unit 60 compensates for fluctuations in the removal of the material strip 18 specifically due to a discontinuous placing of the material strip 18 on the respective blanks 14 and/or due to different distances between individual blanks 14 .
  • the second buffer functional unit 60 thus compensates for fluctuations due to external influences with high dynamics.
  • the first buffer functional unit 40 primarily compensates for fluctuations due to external influences with a comparatively lower dynamic, that is to say, for example, fluctuations between a material supply and a material withdrawal.
  • the combination of the two buffer functional units 40, 60 ensures, on the one hand, smooth operation of the application device 10 even at high speeds of the basic machine 12 and, on the other hand, prevents frequent changes in the rotational speed of the drum 42.
  • each of the two functional units acting as a material buffer (first buffer functional unit 40, second buffer functional unit 60) own drive (actuator) and own sensors are assigned.
  • the drive (actuator) of the first buffer functional unit 40 is the drum drive device 44.
  • the sensor system of the first buffer functional unit 40 is the measuring device 50 of the dancer system 46.
  • the drive (actuator) of the second buffer functional unit 60 is the drive device 74 and the sensor system of the second buffer functional unit 60 is the Position determining device 72.
  • the illustration in Figure 5 also shows the signal flow (measured values 30, 32, 34 and control signals 36, 38) from and to the units mentioned and from and to the control device 24.
  • the control device 24 processes the measured values 30, 32, 34 and generates on the basis of the measured values 30, 32, 34 the control signals 36, 38.
  • the target speeds of these drives 44, 74 depend on the speed of the basic machine 12 and a material requirement of the application device and are adjusted on the basis of measured values 30, 32 that can be obtained using a sensor system 50, 72 included in the application device 10.
  • the above-mentioned tilting mobility of the lower deflection roller carrier 56 is explained: This is rotatably mounted in a horizontal plane in the manner of a seesaw (rocking device) and is tiltable due to this mounting, i.e. when deflected, the lower deflection roller carrier 56 is only pivoted to a certain extent and in any case there is no complete rotation and also no rotation by more than 90 “.
  • a strut oriented transversely to the longitudinal extent of the lower deflection roller carrier 56 extends from the center of the lower deflection roller carrier 56 in a fundamentally optional manner and its end defines the pivot point of the lower deflection roller carrier 56.
  • control device 24 shown in Figure 1 and Figure 5 can also be designed as a distributed control device and thus, for example, a first control device can be assigned to the feed device 20 and a second control device to the application head 16 or distributed functional units of the control device 24 associated with the first and second buffer functional units 40, 60, respectively.
  • a device referred to here as an application material feed device 20 and a method for its operation are specified.
  • the application material delivery device 20 is intended for use with or in a larger device, referred to herein as the application device 10 .
  • the application device 10 is intended for placing a section of a strip of material 18 on a blank 14 provided in particular for producing packaging.
  • the application material supply device 20 takes over the transport of the material strip 18 from a supply of material strips to an application head 16 within the application device 10.
  • the material strip 18 runs through the application material supply device 20 and there by the application material supply device 20 comprised units. These include a first and a second buffer functional unit 40, 60.
  • Each buffer functional unit 40, 60 comprises means for automatically and dynamically changing the path length of the material strip 18 within the respective buffer functional unit 40, 60.
  • the path length of the material strip 18 is within of the respective buffer functional unit 40, 60 can be changed automatically and dynamically and during the operation of the application material feed device 20, the path length of the material strip 18 within the respective buffer functional unit 40, 60 is automatically and dynamically changed by or for each buffer functional unit 40, 60.
  • the two buffer functional units 40, 60 follow one another along a direction of flow of the material strip 18 within the application material feed device 20, such that the second buffer functional unit 60 is located downstream of the first buffer functional unit 40 along the flow direction of the material strip 18.
  • the second buffer function unit 60 is assigned its own drive device 74 .
  • the second functional buffer unit 60 is a fast functional buffer unit 60 and is intended to compensate for external influences with high dynamics.
  • the first functional buffer unit 40 is a comparatively slower functional buffer unit 40 and is primarily intended to ensure that the material strip 18 is fed into the application material feed device 20 as uniformly as possible.
  • control cabinet control box
  • drum drive device (means for dynamically changing the path length of the strip of material)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en matériau d'application (20) destiné à être utilisé conjointement avec un dispositif d'application (10) prévu pour la pose d'une section d'une bande de matériau (18) sur un flan (14) prévu notamment pour la fabrication d'un emballage (14), ainsi qu'un procédé mis en oeuvre lors du fonctionnement du dispositif d'alimentation en matériau d'application, le dispositif d'alimentation en matériau d'application (20) comprenant une première unité fonctionnelle formant tampon (40) et, dans le prolongement de cette dernière, une deuxième unité fonctionnelle formant tampon (60) respectivement pourvues de moyens de modification dynamique de la longueur de parcours de la bande de matériau (18) à l'intérieur de chaque unité fonctionnelle formant tampon (40, 60) et, en mode de fonctionnement, la longueur de parcours de la bande de matériau (18) à l'intérieur de l'unité fonctionnelle formant tampon (40, 60) est modifiée par voie dynamique.
PCT/EP2022/075347 2021-09-16 2022-09-13 Dispositif et procédé d'application de parties d'une bande de matériau sur des flans individuels destinés à la fabrication d'un emballage WO2023041503A1 (fr)

Applications Claiming Priority (2)

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DE202021105005.5U DE202021105005U1 (de) 2021-09-16 2021-09-16 Vorrichtung zum Aufbringen von Abschnitten von einer Materialbahn auf einzelnen zum Herstellen einer Verpackung vorgesehenen Zuschnitten
DE202021105005.5 2021-09-16

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WO2023041503A1 true WO2023041503A1 (fr) 2023-03-23

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067332A1 (fr) * 1981-06-13 1982-12-22 Maschinenfabrik Alfred Schmermund Dispositif pour amener et assembler une bande de matériau d'emballage et un ruban de fil d'arrachage
EP0703149B1 (fr) 1994-09-12 1998-07-15 G.D Societa' Per Azioni Procédé et dispositif pour alimenter une machine d'emballage avec un matériau d'emballage et une bande de déchirure
EP1209083A2 (fr) * 2000-11-24 2002-05-29 Focke & Co. (GmbH & Co.) Procédé et dispositif pour la production des emballages enveloppes et bobine
DE102014204844A1 (de) 2013-03-18 2014-09-18 Albert Slot Vorrichtung und Verfahren zum Aufbringen von Abschnitten von einer Materialbahnauf einzelnen zum Herstellen einer Verpackung vorgesehenen Zuschnitten
DE102018003793A1 (de) 2018-05-03 2019-11-07 Focke & Co. (Gmbh & Co. Kg) Verfahren und Vorrichtung zum Handhaben einer Aufreißstreifenbahn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067332A1 (fr) * 1981-06-13 1982-12-22 Maschinenfabrik Alfred Schmermund Dispositif pour amener et assembler une bande de matériau d'emballage et un ruban de fil d'arrachage
EP0703149B1 (fr) 1994-09-12 1998-07-15 G.D Societa' Per Azioni Procédé et dispositif pour alimenter une machine d'emballage avec un matériau d'emballage et une bande de déchirure
EP1209083A2 (fr) * 2000-11-24 2002-05-29 Focke & Co. (GmbH & Co.) Procédé et dispositif pour la production des emballages enveloppes et bobine
DE102014204844A1 (de) 2013-03-18 2014-09-18 Albert Slot Vorrichtung und Verfahren zum Aufbringen von Abschnitten von einer Materialbahnauf einzelnen zum Herstellen einer Verpackung vorgesehenen Zuschnitten
DE102018003793A1 (de) 2018-05-03 2019-11-07 Focke & Co. (Gmbh & Co. Kg) Verfahren und Vorrichtung zum Handhaben einer Aufreißstreifenbahn

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