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EP3137381B1 - Procédé d'enroulement de bandes autour d'objets et machines correspondantes - Google Patents

Procédé d'enroulement de bandes autour d'objets et machines correspondantes Download PDF

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Publication number
EP3137381B1
EP3137381B1 EP16700400.1A EP16700400A EP3137381B1 EP 3137381 B1 EP3137381 B1 EP 3137381B1 EP 16700400 A EP16700400 A EP 16700400A EP 3137381 B1 EP3137381 B1 EP 3137381B1
Authority
EP
European Patent Office
Prior art keywords
strip
tape
loop
band
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16700400.1A
Other languages
German (de)
English (en)
Other versions
EP3137381A1 (fr
Inventor
Alois Tanner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ats-Tanner Banding Systems AG
Original Assignee
Ats-Tanner Banding Systems AG
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 Ats-Tanner Banding Systems AG filed Critical Ats-Tanner Banding Systems AG
Priority to PL16700400T priority Critical patent/PL3137381T3/pl
Publication of EP3137381A1 publication Critical patent/EP3137381A1/fr
Application granted granted Critical
Publication of EP3137381B1 publication Critical patent/EP3137381B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/185—Details of tools
    • B65B13/187—Motor means
    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/22—Means for controlling tension of binding means
    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • 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
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive

Definitions

  • the invention relates to a method for transferring a band around at least one object in which the at least one object is surrounded by a band, wherein the band is arranged in the form of an object band loop around the at least one object such that at least two band portions overlap and, wherein in a region in which the at least two band portions are overlapped, a reaction plate is interposed between the at least one object and the band and the at least two overlapping band portions are pressed against the reaction plate for connection.
  • the invention relates to a device for introducing a counter-pressure plate between a belt and an object, which is located on a conveying plane and a machine that uses this device and can perform the inventive method.
  • banding typically consists of paper or plastic in banding and is guided in special banding machines around the objects to be banded and joined together, e.g. by welding. If, during banding, the band is laid in the conveying direction of the objects or objects to be banded, this is called longitudinal banding.
  • Both banding and strapping are techniques for transferring ribbons around objects.
  • the term “relocating tapes around objects” is to be understood as meaning that one or more tapes are placed around and connected to one or more objects.
  • the word “Umlegen” makes no indication of the band tension, but designates only the location of the band or bands with respect to the object or objects.
  • bands When strapping the bands are often referred to as tires or straps.
  • the word "ribbon” is to be understood, unless otherwise indicated, as including bands that can be used for banding as well as straps that can be used for strapping.
  • Another holding device which is a clamp here, consisting of the rear holding device and a second clamping part, holds the upper part of the loop firmly.
  • the loop is cut open and pulled straight through the loop puller.
  • the beginning of the tape and the end of the tape are now one above the other and are welded together.
  • the counter-pressure plate generates the necessary back pressure.
  • the loop is not cut open but welded as a loop.
  • the EP 0 401 554 A1 (Büttner ) describes a longitudinal banding method. While the tape is placed around the object in a very similar process as in the aforementioned documents, the tape control differs in the mounting area. In the EP 0 401 554 A1 a gripper takes on a central role. This moves much more often and must cover longer distances than the holding devices in the aforementioned documents. The gripper has to turn around itself again and again to prevent the belt from wrapping around the gripper.
  • a counter-pressure plate In all known methods, a counter-pressure plate is used. This plate must be movable and brought between the band and the object and removed from there. The removal is rather unproblematic, since the band is already welded at the time and together with the tension has a certain stability. A collision of tape and counter-pressure plate during insertion, however, is to be avoided. A loosely strained band can twist or fall out of the lead at one Contact with the counterpressure plate in this process step. A tighter band risks being damaged or destroyed.
  • the counter-pressure plate is inserted at a moment in which there is a distance between the object and the belt and that when the gripper and the rear holding device are far behind and deep below the object.
  • the band which is pulled along by the tape to be transferred, preferably to be banded and / or the object to be strapped, thus runs from the front lower edge of the object or from the front edge of an opening in the conveyor table obliquely down to the gripper or the rear holding device. This creates a space with a triangular cross-section between the band and the object. This can be used to insert the plate.
  • the counterpressure plate should come to lie completely below the band to be wrapped with the band, preferably the object to be banded and / or the object to be strapped.
  • the initial position of gripper or rear fixture is provided by the machine and typically, to keep the paths short, horizontal near the rear end of the platen. If the front edge of an object in the position in which the object just barely covers the counterpressure plate is only slightly above the future position of the front edge of the counterpressure plate, the clearance is very limited and, depending on the thickness of the counterpressure plate, too small. There is thus the danger that the counter-pressure plate shifts the tape during insertion or even damaged.
  • the object of the invention is therefore to provide a method of the technical field mentioned above and a device that allow a quick transfer of one or more bands to different objects with different bands and tape tensions.
  • the at least one object in a method for moving a band around at least one object, the at least one object is surrounded by a band.
  • the band is arranged in the form of an object strap loop around the at least one object in such a way that at least two strap sections are brought to overlap and connected.
  • a counter-pressure plate is inserted between the at least one object and the band.
  • the at least two overlapping band sections are pressed against the counterpressure plate for connection.
  • the method is characterized in that prior to the introduction of the counter-pressure plate, the tape is guided and / or positioned by a tape guide device, so that a defined space for introducing the counter-pressure plate is created.
  • the tape guide device By the tape guide device, the tape can be guided specifically in the area of the counter-pressure plate. This can create a defined space for introducing the counter-pressure plate. Such a space may, for example, have a rectangular cross-section. Clearances with substantially triangular cross-sections, as present in the prior art, can be avoided accordingly.
  • a defined free space holding devices and / or joining devices and / or other components of the machine are placed closer to the position of the introduced counter pressure plate. The paths of moving parts can be optimized, thereby increasing precision and / or speed.
  • a tape guiding device is used, even if the position and the geometrical shape of the object to be banded, preferably to be banded and / or strapped, are not known exactly, the band can still be accurately and safely wrapped around the tape Object to be laid. According to the invention, it suffices e.g. determine whether the tape has contact with the tape guide device and in which position the tape guide device is to decide on the timing for inserting the counter-pressure plate. Without a tape guide device, however, the exact position of the object and the shape of its front would be decisive for the course of the tape below the conveying plane and thus also for the time to insert the counter-pressure plate.
  • Tape guiding device and counter-pressure plate are part of the same machine and regardless of the objects to be wrapped from the belt, preferably the objects to be strapped and / or strapped.
  • the band is at least partially guided in the conveying direction of the object around this.
  • an object band loop around the object is formed at least partially by a movement of the object in a conveying direction.
  • the conveying direction corresponds to the direction in which the object to be transferred from the belt, preferably the object to be strapped and / or the object to be strapped, moves.
  • a plane on which the object to be transferred from the belt moves, preferably the object to be strapped or to be strapped, is referred to as the conveying plane.
  • an arrow which points in the conveying direction should in the present case be understood as pointing from the rear to the front. If one imagines this arrow as a number beam, which defines a coordinate axis in the positive direction, then a first point, which lies before a second point, has a higher value of this coordinate.
  • the term "front” is thus to be understood as an area which lies in front of a region located further back in relation to the conveying direction.
  • the term “rear” is to be understood as an area which, with regard to the conveying direction, lies behind a further forward region.
  • the object is typically moved against the belt loosely stretched in the region between the conveying plane and a belt guide above the conveying plane.
  • the tape protrudes, for example, through an opening in the conveyor plane.
  • the tape is everted during the movement of the object and lies partially around this.
  • an object strap loop is formed.
  • the surfaces of the object in the wrapping area remain open, whose (local) normal vectors point against the direction of movement.
  • the wrapping area is to describe the volume of space in which the band can move during the wrapping of the object.
  • the depth of this volume is equal to the width of the band.
  • the wrapping area lies in the space such that the object strap loop or the undisturbed stretched strap section lies completely in it.
  • the undisturbed tensioned band section forms a boundary of the wrapping area. From there it spreads in the conveying direction.
  • the top and bottom of the wrapping area are therefore at the height of the upper and lower Limitation of undisturbed tensioned tape section. Towards the front the wrapping area should not be limited.
  • a strip guiding device according to the invention in a loop banding method, another strapping method and / or another banding method.
  • the tape guiding device is preferably movable, in particular so that it can move in the conveying direction and / or transversely to the conveying direction.
  • the tape guide device is movable both in the conveying direction and transversely to the conveying direction.
  • the tape guide device can detect the tape targeted and move in a predefined position and / or can align. During the process steps in which the tape guiding device is not needed, it can be moved to a waiting position. As a result, space for other components is created, which allows a more compact design of the machine, preferably the banding machine and / or the strapping machine. This in turn allows shorter paths and faster work cycles.
  • the tape guide device starts at a position that is above or behind a lower grip point.
  • the lower grip point is the place where the tape is held below the object. There is no band in this place for most of the process. A risk of collision is therefore excluded.
  • the tape is moved through the object in the conveying direction.
  • the belt guiding device should also move in the conveying direction. Such a movement also achieves a clearance in which the boundaries "underside of the object" and "band" are substantially parallel to each other over a longer distance.
  • a possible starting point is inside the loop, which is the band loop into which an object is placed.
  • the movement of the tape guide device could then, for example down or diagonally from top to bottom and from the point of attachment of the loop to the edge of the platen further away from that point in the horizontal direction.
  • the tape guide device can continue to move even when in contact with the tape. This allows the belt to be moved to a new position.
  • the tape guide device may travel to a location that is at the same height as the lower grip point. In the horizontal, this location is on the other side of the platen and / or the position of the platen when it is between tape and object. Thus, a trouble-free introduction of the counter-pressure plate can be made possible.
  • tape and tape guiding device Another way to bring tape and tape guiding device in contact, for example, is that the tape is selectively brought into contact with the tape guide device while the tape guide device does not move or stand still. This could e.g. take place by a hook, by an air pressure pulse, by changing the belt tension, by changing the position of the point where a part of the belt is held, etc. It is also possible that both the belt and the belt guiding device are moved around to establish contact.
  • the tape guiding device is a tape guiding hook.
  • Such a hook preferably has a shape that resembles a L.
  • the tape guide device is advantageously an L-shaped tape guide hook.
  • the short leg is preferably at least as long as the band is wide. Over the long leg, typically at the end, the hook is guided. This guidance is done by a suitable mechanism, for example by means of suitable cams, guide elements and a motor or by, for example, a hydraulic or pneumatic control, by means of electromagnets or cables or other methods for carrying out a controlled movement.
  • the length of the legs is reversed or the legs are the same length.
  • the choice of length depends on the width of the belt, the drive and the construction of the machine.
  • the legs do not have to be at right angles to each other. This can also serve to make the structure of the machine more flexible and also a lateral slipping of the band can be difficult.
  • the end of the thigh contacting the band may be rounded or specially smoothed.
  • the latter can either be done directly by the material processing or by a coating.
  • Such a coating may be comparatively thick or very thin. Such treatment can reduce the risk that the band will be damaged by contact with the hook.
  • the hook may be wholly or partially coated to either allow the tape to slide better and / or to prevent it from slipping sideways.
  • the hook may be grounded to prevent electrostatic charging of the belt and hook.
  • one leg serves to attach the hook at the desired location.
  • the hook can be used both in the Leksssbanderolierbacter or Lekssumreifungsbacter and in another banding and / or Umreifungsbacter such as a loop method as a tape guide device.
  • the tape guiding device can also be another component of the machine, which is arranged at the desired position and around which the tape can be laid.
  • a cohesive and / or positive connection is established when connecting the overlapping band sections, in particular with the aid of a joining device.
  • Typical cohesive bonding methods are, for example, welding, gluing and / or fusing.
  • a positive connection of two bands can come about, inter alia, by suitable embossing, punching and / or folding or, for example, knots.
  • suitable embossing, punching and / or folding or, for example, knots In the welding process, in particular ultrasonic welding is preferred.
  • the joining device performs the desired connection method, wherein the counter-pressure plate can hold the necessary back pressure.
  • a joining device may, for example, be a welding head, in particular an ultrasonic welding head. However, it may also be Schulamellen, which are pushed between the bands and a stamp that presses the heated bands against the counter-pressure plate. For example, adhesive can be applied by the joining device. The bands can then be pressed against the counter-pressure plate, for example, with a punch for joining.
  • the joining device may also include an embossing tool, for example a punching tool.
  • the joining device can, for example, fold or knot.
  • the joining device is chosen so that it can perform the desired method, in particular by using the counter-pressure plate.
  • the counter-pressure plate is planar in an advantageous embodiment. This is not mandatory.
  • the configuration of the counter-pressure plate is adapted to the respective connection method.
  • connection method can basically be chosen independently of the selected banding or strapping method. It can also be chosen independently of the specific embodiment of the tape guide device. Therefore, in principle, all combinations are possible.
  • a cohesive connection is produced, in particular by a welding process, preferably by an ultrasonic welding process
  • the bands used in banding machines and / or strapping machines are made of plastic or coated paper. Welding processes result in stable bonds and do not require movement of the bands. Therefore, they can be well integrated into the machine, such as a banding and / or strapping machine. Welding based on heat often requires special tapes or coatings. Ultrasonic welding allows a wider choice of materials. It also has the advantage that hardly any heat, exhaust gases or dust arise.
  • Bonded joints often take longer to fully load. On the other hand, the appearance of the bands is hardly affected.
  • Positive connections have the advantage that they can often be produced almost purely mechanically and quickly (for example embossing and punching).
  • connection method is advantageously matched to the material of the band.
  • a belt tension is controlled by a belt tensioner during the entire process.
  • the strap tensioner is in particular a device through which the strap passes.
  • it is located between a tape source, such as a supply reel and the conveying plane.
  • the tape tensioner is disposed between the tape source and an area at which the tape, coming from the tape source, for the first time has the opportunity to come in contact with the object.
  • the belt tensioner can perform the task of controlling the belt tension in various ways:
  • the belt tensioner comprises at least two elements between which the belt passes and wherein at least one of the elements is displaceable relative to the other element.
  • a first element may be, for example, a jaw, a roller or a pin.
  • the first element is characterized in particular by the fact that the tape can be pressed non-destructively and that it can be moved relative to the second element, which can be shaped quite differently than the first element, such that a moving between the two elements band is slowed down in his movement.
  • at least one of the elements is a roller which rotates at a certain speed or in which the rotational speed can not exceed or fall short of certain minimum and / or maximum values.
  • a special motor can be used to generate the desired speed and / or control thereof.
  • Another possibility is that the movement of another engine of the machine shared and appropriately deflected and implemented.
  • a rotating roller may be a jaw or a pin or other element, which can move in the band extension direction. The pressure between the two elements can be so high in this embodiment that the static friction of the band on the at least one roller is greater than the sliding friction.
  • the tape is therefore transported in a controlled manner via the rotation of the roll or a tape movement is controlled by the roll.
  • the pressure between the elements may be generated, for example, by a spring, by magnetic forces, by a pneumatic or hydraulic device, by the weight of one of the elements, or by other types of power transmission. It is also possible in principle that a distance between the two elements is fixed.
  • the adhesive and / or sliding friction properties between the elements or the contact surfaces of the elements and the tape can be suitably influenced by coatings or surface structuring.
  • the belt tension is changed during the process.
  • the tape tension is set lower during a first contact of the tape with the object than during the period in which the at least two tape portions are made to overlap.
  • a banding method and / or a strapping method in particular if the object is sensitive, it may be advantageous that the band is only slightly tensioned at the time of initial contact with the object. This results in only small forces on the contact points of the object. In many cases, however, a higher belt tension is desired for the actual transfer process (preferably banding or strapping), e.g. to securely and firmly enclose the object.
  • a belt tension which can be changed during the process, both requirements can be met: The belt tension can be low at the time of initial contact and can be increased before connecting the belt.
  • the contact surface between the object and the belt may already be considerably larger than at the time of initial contact, so that the object is not damaged by the higher belt tension at a later time.
  • a similar change in tape tension can also prevent an object moving from a stack of things projecting differently in the direction of conveyance from shifting or shifting smaller than would be the case without changing the tape tension.
  • the band tension is initially large and then reduced. For example, an edge or side of the object may be intentionally violated, for example to prevent a comparatively loose band from slipping off the object.
  • the belt tension can be changed by various mechanisms: In a belt tensioner which uses sliding friction, ie in which the belt passes between two elements essentially resting with respect to the belt, the belt tension is changed by a change in pressure between the belt tensioners controlled by both elements. But it could also be the surface properties of Band and / or one and / or both elements. This is done, for example, by applying a lubricant or inserting intermediate layers.
  • the belt tension may preferably be made by changing the moving speed of the moving parts. If a motor is used to drive and / or control, for example, its speed can be adjusted.
  • a belt tensioner which uses the static friction, the pressure between the elements and / or their surface texture and / or the surface of the belt changes so that there is also a sliding of the belt between the elements.
  • the belt tension is controlled by a control unit, in particular by electrical signals.
  • the control of the belt tension via a control unit has the advantage of user-friendliness and safety.
  • the user should not for safety reasons directly on a component of a machine that is not explicitly intended to handle it.
  • the belt tensioner is mounted and / or executed so that it is also directly and without control at any time adjustable so that the belt tension is changed.
  • Electrical signals have the advantage that they can be generated and transmitted well and one has a relatively large freedom in the choice of the transmission path. This is less straightforward, for example, with cables which would also enable signal transmission. Wireless signal transmission using electromagnetic waves requires special receivers on the belt tensioner. By contrast, with the aid of a suitable electrical signal, it is possible to use a motor or a brake which influences or controls the movement of an element or the pressure between the elements. direct control. Even a pump, valves and other controls of a pneumatic or hydraulic mechanism can be electrically influenced. The pressure change between the elements can be adjusted directly by means of suitable cables in many pressure generating methods. An advantage of electrical signals, however, is that they can be relatively easily and in the usual form today form of programmable control units or change.
  • Suitable sensors may be incorporated directly into the belt tensioner and for example measure how much one or more of the elements are pulled from the belt in the belt direction or what the torque of the belt is on e.g. is a role. Together with the known sliding and / or static friction properties between the measured element and the belt, a force and thus the belt tension can be determined therefrom.
  • One or more comparable sensors could also be attached (additionally or alternatively) to the lower attachment point.
  • the torque caused by the belt tension may show itself in current and / or voltage signals.
  • the belt tension can be measured.
  • the actual sensors for example a voltmeter and / or ammeter
  • the rear holding device here represents the lower holding point.
  • the rear holding device defines, inter alia, the position of the lower end of the free-tensioned belt before it comes to be transferred from the band, preferably to be banded and / or the object to be strapped into contact.
  • the tape guide At the tape guide, at the position in a plane above the object, is the position of the upper end of the free-tensioned tape.
  • the rear retainer holds the strap locally so that the retained part can not slip through or over the retainer.
  • the tape guide is preferably designed to control the course of the tape but not to fix the tape locally.
  • the tape can and should therefore move in or around the tape guide in this embodiment, for example, when the tape is tensioned with some force by the movement of the object or by the movement of the tape guide or by a movement of the machine.
  • Tape guide and belt tensioner can be a component with which the course of the Bandes and the band tension can be controlled in the same place.
  • the tape guide may simply be a pin, a roller, a surface that may be curved.
  • the tape is placed and either it can slide over it or it is movably supported by the rotation of the roller or the movement of pin or surface.
  • a pin, surface or roller may be surrounded by devices which prevent the belt from slipping off, such as side bars in the form of short bars or surfaces. It is advantageous if the friction between tape and tape guide is kept small if the tape tensioner is not part of the tape guide. In this case, otherwise the tape tension produced by the tape guide would have to be taken into account in the tension regulation of the tape, which makes setting the tape tension somewhat more difficult. In addition, the smallest possible belt tension is increased by the friction between belt and belt guide.
  • the rear holder is typically a clamp. So it consists of two jaws that can be pressed together.
  • the band to be held can be clamped in between.
  • the jaws are so selected and the pressure determined so that the tape can not be pulled between the jaws even with the highest, occurring in the process tape tension.
  • the band is not damaged by the pinching. Since it is the beginning of the tape and this is in the finished product near the junction, damage to the tape would be less noticeable at the site than elsewhere. It is therefore conceivable that the tape is held by the rear holder also with a method which damages the tape. For example, it could be one or more needles that are stung by the tape.
  • the term "move through the tape guide” is also intended to include the sliding of a tape over a dedicated surface of a tape guide.
  • the object can not be completely enclosed by the band, since there are always places in physical objects whose local normal vector at least partially points against the direction of movement of the object and these locations also occur in each development area. At these points can be brought by the movement of the object and the evasion of the tape alone no band. This is achieved with the help of the tape guide, which presses the tape behind the object below the conveying plane. The necessary mobility she gets preferred by a movable arm on which it is stored.
  • the tape guide may also include suitable rails and a mating carriage on the tape guide, or the tape guide could be attached to a type of pole that can be raised or lowered.
  • the tape To close the last piece of object tape loop, the tape must be brought from the lowered tape guide under the object where the rear holder is with the beginning of the tape. This is done with the help of the loop puller.
  • the loop puller is an L-shaped hook or pin.
  • the pin or hook is placed at this point of engagement between the tape guide and the tape.
  • the tape guide is designed so that the tape is held above and below the point of engagement in the vicinity of the tape guide. This can for example be done via two suitable pins or a housing in which is only an opening to the point of engagement.
  • the tape can also be held, for example, with negative pressure in or on the tape guide.
  • the loop puller is now at least partially brought into the point of engagement and thus between tape and tape guide.
  • the loop puller comprises a device which sucks the band under negative pressure.
  • the loop puller If the loop puller is now moved in the conveying direction, it moves the strip with it and thus creates a loop that starts and ends in the tape guide.
  • the tape tension is controlled to take a first value while no object touches the tape, a second value while the tape is being moved by the object, and a third value as the tape guide pushes or moves the tape down.
  • the second value of the belt tension is not greater than the third one.
  • first, second and third values are not constant in time but continuously merge into one another.
  • the first value is the stress that the front edge of the object can withstand or with which the front edge is to be processed.
  • the second value should be chosen among other things with reference to the transport mechanism of the objects. Too high a belt tension would slow down the object, stop it or even push it back in the opposite direction to the transport direction. When lowering the tape guide, however, the object is already majority surrounded by the band. The forces are distributed more evenly over the surfaces touched by the belt, and since a certain length of belt is needed, a belt tension can be built up without the need of a mechanism which retracts the belt. Due to the fact that the band already surrounds the object by a majority, there is less risk that the object or parts thereof will be moved unintentionally at this time.
  • a sudden or sudden adjustment of the belt tension can under certain circumstances lead to unintentional damage, in spite of actually suitable values for the belt tension, or the belt sticks or gets stuck locally.
  • the tape may be stuck or imposed under a smaller tape tension, which could change in a sudden change to a larger tape tension but.
  • Even with sudden transitions the timing with the movement of the object is difficult. Slow and steady transitions between different tape tensions can help to avoid such problems.
  • the objects are detected by a sensor, in particular a light barrier, before they touch the tape.
  • the extension of the object in the conveying direction and its arrival time at the band is determined from a signal of the light barrier and a known speed of the object in a conveying direction.
  • the tape guide lowers behind the object. Moreover, it may be, e.g. When the tape tension is changed, it may be useful to know when an object is in contact with the tape. Although this time can be determined in various ways, e.g. by observing how much tape is needed for a given tape tension. Another variant is that the object and its position is measured at an earlier point in time and then, from this time on, it is only moved in a known manner.
  • the object size which is of primary interest here, is the extent in the conveying direction. For example, this can be detected relatively easily with a light barrier through which the object moves at a known speed. In a preferred embodiment, the speed is constant, as this makes the evaluation easier and more robust. The speed can also change. However, the speed should be known essentially at any time during the measurement for a meaningful evaluation. If the object also moves at a known speed after leaving the photocell, the distance between the photocell and the clamped band is known, and if the time at which the object begins to block the photocell is determined, the arrival time at the band can also be determined.
  • test probe could be used to determine the weight or electrical properties such as conductivity or permittivity.
  • a controller regulates the processing speed of the method steps and, if appropriate, the control unit for the belt tension.
  • the regulation takes place in particular as a function of the measurements of the extent in the conveying direction and / or the determination of the arrival time at the band. It is also possible that the regulation of the flow rate is based on information from a memory in the controller or from external data storage and / or further measurements.
  • controller which regulates the speed of the process steps
  • control unit which regulates the belt tension
  • the tape guide lowers after the passage of the object.
  • the information is required when the object has passed the location where the tape guide passes through the conveyor plane.
  • This information can be calculated, for example, from the arrival time at the belt and the extension of the object in the conveying direction.
  • the information can be measured or stored in an internal memory or in an external data memory.
  • Another possibility is to place a sensor near the location where the tape guide passes through the conveyor plane, which can detect the end of the object.
  • the controller Preferably also measured data and / or stored data are used for the controlled change of the belt tension.
  • the controller, the general controller or the control unit may be designed, for example, to use information about the exact shape of the object and force limits to specific locations to properly regulate process speed and / or belt tension.
  • the counter-pressure plate is inserted in a preferred variant from the side or substantially transversely to the conveying direction. The clearance for this is created by the tape guiding device.
  • the counter-pressure plate is preferably made in one piece. But it is also possible to realize a counter-pressure plate of two or more parts. These can then be pushed together from the same side or from different sides.
  • a method for overlapping band sections additionally comprises the step of forming a loop in the conveying direction starting from the band guide, in particular by means of a loop puller (100), wherein the loop expands to overlap with the beginning of the band.
  • a second method for overlapping band sections additionally comprises the steps of bringing the band into a loop located below the conveying plane, closed in the conveying direction and starting from the band guide by means of the loop puller and holding the band in the region of an upper part of the band Loop through another holding device. Subsequently, the severing of the band in the region of the loop and the spreading of the now open loop, in particular by the loop puller, wherein the loop before cutting is so large and a division point is chosen so that the band overlaps with the beginning of the tape.
  • the new step is that the tape is held in a forward position by a front fixture.
  • the tape is brought by the movement of the object and / or the tape guide device.
  • the front holding device is intended to hold the band so that it can not slip through this device under stresses up to the maximum occurring band tension in the tape transfer process to be performed, which is preferably a banding and / or strapping process.
  • the tape is not damaged by the holding.
  • the front fixture is a clamp. This clamp comprises two jaws which are suitably shaped and can be compressed with sufficient force to hold the band to the maximum belt tension.
  • One of the two jaws can also be part of the counterpressure plate.
  • the second jaw may also be part of a surface of another component of the machine.
  • the band is held in particular at two places at the same time: the beginning of the strip is held, for example, by the rear holding device and a piece of tape at a front position by a front holding device.
  • the front and rear brackets need not be at the same height. In the horizontal but lies the front holding device in front of the rear holding device ("front" and "rear” are defined with respect to the conveying direction).
  • front and “rear” are defined with respect to the conveying direction).
  • the loop puller (eg, in the manner discussed above) draws a loop that is long enough (measured in the direction of conveyance) for the end of the loop to be in front of the rear holder and below Counterpressure plate comes to rest.
  • the beginning of the tape can either be kept in the rear holding device at this time or be released from it already. If the latter is the case, then the beginning of the tape is down, but the loop can be so large that it also overlaps with this drooping tape beginning.
  • “Overlapping the bands” is to be understood here as meaning that when one looks at a band surface of one of the bands, it at least partially hides the other band. In the case of overlapping with a loop, therefore, a lower region of the loop overlaps the upper region of the loop and both loop regions overlap with the band, in particular the beginning of the band, which lies above the loop.
  • the two overlapping band sections are the beginning of the band and the band loop in the first of the two possible methods.
  • a loop is also produced by means of the loop puller (e.g., in the manner mentioned above).
  • Another holding device is used to hold the upper part of the loop.
  • the further holding device is of the requirements and possibilities, for example, substantially the same as the front holding device. But she now holds the upper part of the loop at a point which lies in the conveying direction behind the front holding device.
  • the beginning of the strip is released from the rear holding device.
  • the rear holding device now stops nothing and can hold in a preferred embodiment, the lower part of the loop.
  • the loop is preferably separated directly in front of the rear fixture or elsewhere on the lower part of the loop. If the rear holder does not hold any part of the lower loop, the loop can be separated at any allowable point. Described below is how the length of the loop and the separation point should be chosen for an acceptable solution.
  • the rear holding device and the further holding device can also have a component or component which, for example, has jaws of clamps on two sides.
  • the further holding device can use a part of the counter-pressure plate as a second jaw.
  • the further clamp consists of a part of the counter-pressure plate and a first clamp piece and the rear clamp consists of the first clamp piece and a second clamp piece.
  • the first clamp piece has two jaws lying on opposite sides. The first and second clamp pieces can be moved together or separately. This makes it possible to release the other terminal without loosening the rear terminal and vice versa, or to keep both terminals closed or open at the same time.
  • the separation of the tape can be done with one or more suitable knives or scissors.
  • the separation can also be effected by a heating wire.
  • two very effective clamps can be used and the band clamped until it breaks. It is also possible to perforate the tape with needles until it is severed or ruptures under the smallest load. Other separation methods are not excluded.
  • the loop puller is typically still at the apex of the loop at this time or when the tape is being severed.
  • the loop moves so that the newly severed tape end moves in the direction of conveyance.
  • another component can spread the now open loop.
  • the spreading of the open loop by the further movement of the loop puller is preferably to be understood such that the tape is painted or pressed against the counter-pressure plate. So it is a smoothing along the counter-pressure plate.
  • the open loop is directly on the tape.
  • the loop which the loop puller has produced prior to slicing is particularly so large and the point of separation is specifically chosen so that the strip length extends from the further holding device at least until before the beginning of the strip. At least part of the overlap area is below the counterpressure plate.
  • the band end preferably extends beyond the counterpressure plate in the conveying direction.
  • the band portions which are overlapped are the band beginning and the band end.
  • the method additionally comprises a step of placing and holding the band leader by a band leader in a location above a loop created by the loop puller.
  • the location above the loop is the underside of the counter-pressure plate.
  • the ribbon start holding device is a ribbon start clamp.
  • the tape hangs starting from the front holding device arcuately downwards.
  • the stiffness of the band determines how tight the bow is, in which the band bends and thus also the position of the beginning of the band which now represents the lowest point.
  • This situation is particularly not optimal when working with different bands. Namely, as described above, the positioning and the size of the loop pulled by the loop puller depend on the position of the strip beginning. With changing bands, however, this position is initially unknown and can only be detected automatically with difficulty, without the use of additional sensors.
  • there is a ribbon leader that shortly after the ribbon has released the ribbon holds it and holds it in a known position or at a desired position until after the bands have been joined.
  • the Band frustratingshaltevoriques positioned the beginning of the tape with advantage in such a place. While the position of the loop is variable to some extent, the height of the bottom surface of the platen is usually well defined. It is therefore advantageous to place the beginning of the strip as directly as possible in a region on the underside of the counter-pressure plate.
  • the tape leader is a tape leader that can pinch the tape.
  • this terminal formed as part of the counter-pressure plate.
  • both terminals are independent components, which only take over the terminal function.
  • one or both of the clamps to be components which, in addition to the clamping function, still perform at least one further function. Since there is hardly any belt tension on the belt in this clamp, the requirements for the holding force are significantly lower than for the front, rear or further holding device.
  • a clamp instead of or in addition to a clamp, therefore, e.g. be operated with vacuum as the sole or additional holding means. It may also be sufficient to have a support surface, such as a support surface. to use a pen or a table on which the beginning of the tape can partially rest. To avoid slipping of the strip beginning, the support surface may be coated and / or structured.
  • the method for transferring a band around at least one object is a banding and / or strapping method, in particular a banding method.
  • the counterpressure plate is introduced before process step b), then the counterpressure plate for process step b) can be used. This can simplify the construction of the front, the further and the tape start holding device, as explained above.
  • the joining requires overlapping band sections. This requirement can be met by method step b) in an advantageous manner.
  • the method for transferring a band around at least one object is a banding and / or strapping method, in particular a banding method.
  • a counter-pressure plate facilitates the process c) as explained above.
  • c) with a split loop, one has the advantage that only two and not three band layers have to be connected.
  • the tape consumption may decrease if the separation happens at an appropriate location.
  • the holding of the tape in the region of the lower part of the loop by the rear holding device before the separation of the tape causes the machine is back in the starting position after completion of the process and the next object of a band folded, preferably strapped and / or strapped , can be. Without holding the new beginning of the tape would be lost and would have to be returned by hand or by other means only to the starting position in the rear holding device. If the tape was held behind the separation point by another holding device, the position of the new beginning of the tape would be known, but to perform the same procedure a second time, the holding device would have to be changed. Therefore, the use of the rear holder for this purpose is advantageous.
  • the counter-pressure plate is preferably simply pulled out to the side, where "to the side” means that the main component of the movement is perpendicular to the vertical and perpendicular to the conveying direction. Turning around a vertical axis outside of the band covered area is also possible.
  • the movement of the counter-pressure plate is preferably carried out so that the counter-pressure plate ends at the place where it was at the beginning of the Umlegebacters, preferably the banding and / or strapping process. This is especially outside the surrounding area.
  • the object is now surrounded by a band, preferably strapped and / or strapped, free for transport and, even though the band guide has moved back into the plane above the objects, all components at the positions where they for the Moving a tape around the next object should be the same procedure.
  • the procedure can be repeated.
  • the method for introducing the counter-pressure plate is advantageously carried out by a special device for introducing a counter-pressure plate between a belt and a conveying plane in a machine, preferably a banding and / or strapping machine.
  • a realized plane is a part of a plane in which a physical plane lies.
  • a smooth, non-curved table surface realizes the plane that can be defined by the table surface, meaning the plane spanned by linearly independent vectors lying on the table surface.
  • the conveyor plane is the plane in which the undersides of the objects move. Typically, it is realized by a table or conveyor or a mixture of both. But it is also possible that the objects are held and guided on the sides. In such a case, there is no component that realizes a continuous conveying plane. Thus, even if there is a table, a conveyor belt, a guide rail or the like, the conveying plane may protrude beyond the edges of this realization of the plane. The conveying level is therefore to be understood in certain areas at most in the sense of a mathematical construct.
  • the opening in the conveying plane is in any case of a physical nature: an opening is present at those points where the conveying plane is not realized.
  • a distance between two tables or conveyor belts, which realize the conveying plane, is therefore an opening in the conveying plane.
  • a single table edge can also be an edge of an opening and a hole in a table or conveyor belt as well.
  • the opening is in particular transversely to the conveying direction everywhere at least as wide as the band.
  • the opening in the region of the tape guide is at least as wide as the tape guide transversely to the conveying direction.
  • the tape guide can move the tape through the opening below the conveying plane.
  • a length of the opening in the conveying direction is in particular at least as large as the sum of the thickness of the strip, the width of the counter-pressure plate in the conveying direction and the thickness of the strip guide transversely to the conveying direction.
  • Width and thickness of the tape guide here only refer to the part of the tape guide device at any time below the conveyor level. Depending on how the tape guide is brought under the conveying plane, it is not the thickness and width of the tape guide itself, but the thickness and width of the volume that the tape guide ever occupies during the entire process in the conveyor plane. If the conveying plane is realized by an object, it must be noted that this has a certain thickness and parts of the tape guide must also pass through this area.
  • the device for transferring bands around objects preferably for banding and / or strapping, preferably comprises a further holding device, which can hold the band in the region of an upper part of the loop.
  • the device for transferring bands around objects preferably for banding and / or strapping, preferably further comprises a ribbon start holding device which can place the ribbon back after it has been released by the back holding device, in particular by bringing the ribbon leading to the counter-pressure plate by the ribbon top holding device becomes.
  • the tape start holding device is a tape start clamp.
  • the device for transferring bands around objects preferably for banding and / or strapping, preferably further comprises a loop puller which, in the case of an open loop, can spread it so that there are only two band plies in the overlapping area, in particular that only two band plies between Joining device and counter pressure plate are located.
  • an open or split loop is meant a band assembly having substantially the shape of a loop. This means that the band starts from one place and spreads in one direction. At a second location, the apex of the loop, the direction of propagation of the band changes continuously so that the band eventually leads to a third location near the starting point. This is a loop.
  • An open or split loop is now characterized by the fact that the band is interrupted at one point of the loop.
  • a tape ply is a tape overlying or underlying, two tape plies are two overlapping tapes, three tape plies are three overlapping tapes, and x tape plies are x overlapping tapes, where x is a positive natural number greater than one.
  • the joining device of the device for transferring bands around objects is preferably a welding head, in particular an ultrasonic welding head.
  • a welding head is the device used for a welding process.
  • the arguments and alternative embodiments described for the method apply analogously.
  • the tape guiding device of the device for transferring tapes around objects is preferably a tape guiding hook.
  • the tape guiding device of the device for transferring tapes around objects can preferably be brought between the belt and the conveying plane and move in the conveying direction.
  • the conveying plane of the device for transferring bands around objects is preferably defined by a conveyor table.
  • a table can define a plane. Defining the conveying plane by means of a conveyor table has the advantage that the objects can simply be pushed over the table during the process. Many other transport methods require adaptation to the object, which is difficult to realize for different objects in an unknown order or non-standardized objects.
  • a table allows moving objects that are stacks of loose objects. Such are often banded and / or strapped. It is therefore advantageous if the device is suitable for such objects.
  • An alternative to a table with similar properties is e.g. one or more conveyor belts or transport rails.
  • the space for inserting the counter-pressure plate in the device for transferring bands around objects, preferably for banding and / or strapping, is preferably partially bounded by the band. This runs from the rear holding device to the tape guide device and from there to the object and / or an edge of the opening in the conveying plane.
  • Another aspect of the present invention relates to a belt tensioner that can regulate belt tension.
  • the band tensioner is electrically controlled.
  • the belt tensioner may preferably change the belt tension during operation.
  • the belt tensioner is in particular part of the device for transferring belts around objects, preferably for banding and / or strapping.
  • the band tensioner further comprises a device for detecting the band tension.
  • the possible change during operation should also allow the changes during the transfer of a tape around a single object or a single object group. This change should preferably also be made possible with banding and / or strapping methods.
  • the device for transferring bands around objects preferably for banding and / or strapping, preferably further comprises a control unit.
  • This control unit is preferably designed so that it also controls the belt tensioner.
  • the device for transferring bands around objects preferably for banding and / or strapping, further comprises a device for detecting the band tension.
  • the band tensioner can be designed such that it can also measure this in addition to the adjustment of the belt tension.
  • the device for transferring bands around objects comprises at least one sensor with which the position and / or the extent of an object in the conveying direction can be determined, in particular this sensor comprises a light barrier.
  • the device for transferring bands around objects comprises a controller which can control and synchronize the flow rate of the different method steps.
  • a fast transfer of tapes in particular a rapid banding and / or strapping, may be advantageous.
  • a slow process it may also be advantageous to synchronize the transfer of tapes around objects, in particular the banding and / or strapping, with processes taking place before or afterwards in a production chain. Some steps may be slower or faster with special tapes or special products than in other situations.
  • the devices can be adapted to the respective needs.
  • the device comprises a plurality, preferably 2, supply spools for belts.
  • the supply spools serve to receive and provide the tape before the actual banding process.
  • the supply reels are preferably matched to one another by a supply reel control in such a way that in each case one supply reel can be exchanged while reels are being unwound from another supply reel.
  • the tuning by the supply reel control allows a connection from one end of a reel to a reel end from another reel.
  • a tape end with a beginning, end and beginning of the tape preferably overlap to a length of less than 1 cm.
  • the overlap area is less than or equal to 0.7 cm long.
  • the device comprises a connecting device with which a band end of a band on a first supply reel can be connected to a beginning of a band on a second supply reel.
  • the connecting device is preferably a welding device, in particular an ultrasonic welding device.
  • the device comprises in a further embodiment, in particular a tape storage.
  • a tape storage This allows the banding process to continue for a period of time, unrestrained or slowed, without the belt moving on the other side of the belt storage due to the banding process.
  • This decoupling allows, in particular, the connection of one end of a coil with a beginning of the strip from another coil, without delaying the banding process.
  • the tape storage is controlled by a tape storage controller. This can be used to empty the tape storage controlled and in particular at another time to fill again controlled.
  • One embodiment of a tape storage is a tape guide over at least three pulleys, of which at least one is displaceable relative to the other two. The shift (for example, by a motor) changes the length of the track the belt passes through: as the distance increases, the reservoir becomes full, the distance decreases, and the reservoir is emptied.
  • a band tensioner or tension regulation may be integrated in the band memory or stored before or after it.
  • the tape tensioner is upstream of the tape storage, since so the tape runs with a well-defined tension through the tape storage.
  • a tape storage controller can at least partially take over tape tensioner functions and regulate the tape tension within a certain range.
  • the apparatus may include more than one band tensioner, such as one that generates and / or controls the tension in the banding process on the object and a second that creates and / or controls the tension of the band on the track through the apparatus.
  • the tape storage controller and the supply spool controller are matched or identical.
  • the tape storage controller or the supply reel controller may be part of the control of the apparatus and / or synchronized or otherwise tuned to each other.
  • the connecting device and the supply reel or tape storage control are coordinated such that in the welding of a tape end with a beginning of the tape, these overlap to less than 1 cm in length, in particular less than or equal to 0.7 cm in length.
  • connection should still be resilient.
  • connection methods such as welding or gluing or a positive connection or another known type of connection of bands are suitable. Welding can be the preferred ultrasonic welding or local heat.
  • the connection method is preferably the same as that used in the joining apparatus, since the connection is substantially the same as that produced by the joining apparatus.
  • the welding preferably takes place before the band has reached the band guiding device or the lowerable band guide or the joining device and thus preferably in the vicinity of the supply spools. (The distance here is to be measured along the distance that the band goes through in operation.)
  • the device comprises a printer unit for printing the tape before or during the banding or strapping process.
  • the printer unit is preferably a thermal transfer printer.
  • the printer unit is preferably mounted in the tape running direction after a tape storage and in particular freely accessible. "Freely accessible” means, in particular, that no tools have to be used to access the printer unit.
  • the device apart from the printer unit, the device may remain in its operating state while access for maintenance to the printer unit exists.
  • a printer unit makes it possible to print the banderoles precisely and individually tailored to the object.
  • a thermal transfer printer allows the application of a bar code or a matrix code.
  • the bands can be printed before being introduced into the tape storage.
  • an individual printing requires a very precise adjustment and a very precise knowledge of the objects and their order (if this plays a role, the objects thus differ from each other).
  • thermal transfer printing alternatives include, for example, ink jet printing, laser printing, line printing, dot matrix printing, thermal sublimation printing, direct thermal printing or laser marking.
  • the choice of printing method depends on the one hand on the required resolution and quality of the printed image and on the other on the material and the dimensions and the type of tape. So z. As a laser inscription damage a thin tape so strong that it is no longer usable. For very coarse belts with an irregular surface, however, laser marking may be appropriate, while thermal transfer printing might provide less good results.
  • the printer unit is preferably mounted in a readily accessible manner since almost all printing methods include a consumable such as ink or toner. A refill of this consumable, as well as work such. Cleaning printheads should be quick and easy. Since any manipulation of a device can lead to damage, it is advantageous to mount the printer unit so that the maintenance of the printer unit and the refilling of their consumables can be done without parts of the rest of the device must be disassembled or misplaced. Preferably, a printer unit can also be exchanged or extended by another printer unit without having to make any significant changes to the other device. Thus, with a device simply multiple printing methods can be applied.
  • At least one of the drives used is realized by at least one servomotor.
  • at least one of the servomotors can be controlled remotely.
  • the at least one servomotor that drives the belt or belt may also be used as a wear-free brake.
  • the servomotor allows precise control over its position and / or speed and / or acceleration. Since servomotors are controllable, the control of the device can be used to precisely adjust position and / or speed and / or acceleration and z. B. to the tape used to adapt to the object to be converted or process status. So it is conceivable, for example, that the process runs a little slower, while one end of a coil is connected to the beginning of the tape another coil and possibly also the tape tension is slightly reduced while the connection point is still within the device.
  • Controllable stepper motors are, for example, a possibility or motors that are themselves not very controllable, but are used selectively or exert only certain forces with clutches and brakes, are other examples. Even with other mechanical means, process steps can be synchronized and exercise targeted forces.
  • the device comprises at least one sensor. This may preferably measure the pressure on the packages and / or the tension on the belt and / or the presence of supply rolls and / or the quality of the printing and / or another property of the device, the package and / or the belt.
  • the sensor data can preferably be read out by remote access.
  • Sensors allow control and control of the method and apparatus. If the device has an electronic control, it is possible that it automatically integrates sensor data and adapts the control signals in such a way that the process runs optimally. If the device has no electronic control, the sensor data for adjusting the device, e.g. be used by a technician.
  • Sensors in conjunction with an electronic control allow the device to set itself up, at least over a certain range, with respect to the monitored and controllable parameters. This may allow, for example, a quick and spontaneous change of objects or types of tapes without the need for prior precise alignment of the device.
  • the device can be controlled from a remote location and, even if the controller and / or the motors can be controlled remotely, can also be controlled remotely. This can be the Increase productivity and job security and / or also help to integrate the banding process optimally in an existing chain of production steps.
  • Typical objects for banding are packages with different contents or stacks.
  • paperboards such as e.g. folded packaging cartons or papers such as e.g. Newspapers or catalogs.
  • the objects can also be directly behind each other and so be banded as a stack.
  • the height of the stack is limited by the highest position of the tape guide.
  • the width of the stack is limited on one side if necessary, in that the tape guide must be mounted somewhere.
  • the choice of the tape is directed not only optical and aesthetic aspects but also according to the connection method used.
  • Typical bands for banding methods are between 10 and 100 mm wide and can be up to 50 ⁇ m thin.
  • preference is given to using belts having a width of 1-150 mm, in particular 5-100 mm or 8-50 mm.
  • a thickness of In particular, tapes measure 50 ⁇ m-2 mm, in particular 100 ⁇ m-1 mm or 150 ⁇ m-500 ⁇ m.
  • Typical bands for strapping are between 5 and 30 mm wide and have a standardized thickness which is preferably between 0.1 and 1 mm and more preferably between 0.25 and 0.6 mm.
  • plastic belts or paper belts are typically plastic belts or paper belts.
  • the plastic bands are made in particular of polymer material, preferably polypropylene (PP).
  • PP polypropylene
  • PET polyethylene terephthalate
  • Plastic tapes and paper can be printed and / or coated. A coating may allow the application of an unsuitable material in a particular bonding process. For example, coated paper can be ultrasonically welded.
  • FIG. 1 shows the starting situation of an inventive banding process as an example of a Umlegebacters a tape around an object.
  • the method can be carried out analogously as Umreifungsvon.
  • An object 6, for example a stack of paper or a cardboard stack moves on a conveying plane 1.
  • a strip 3 is held in a rear holding device 2, which lies below the conveying plane 1. From there it runs to a point in a plane above the object, in which case a belt tensioner 5 is installed.
  • a tape guide 4 is in this example without tape contact, in the horizontal direction between the tape tensioner 5 and the rear holder 2 and at a similar height as the belt tensioner 5. In another embodiment, a contact between the tape guide 4 and the band 3 in this situation.
  • the tape guide 4 can hold the tape in the plane above the object 6. It is also possible that, instead of the belt tensioner 5, a deflection roller or another component which can hold the belt in the plane above the object 6 is used.
  • the tape comes from a tape source, not shown, which is preferably a supply roll. From there, the tape is passed over the belt tensioner 5, possibly via the tape guide 4 to the rear holding device 2. In between pulleys and other components can be used to guide and treat the tape in the desired manner. It could also be printed, for example.
  • the belt tensioner generates or maintains a belt tension which is lower than that which the closed, finished belt loop, when banding this is the band, finally should have (nominal tension).
  • FIG. 2 shows the situation at a time shortly after the situation in FIG. 1 ,
  • the object 6 has reached the tensioned between the rear holding device 2 and 5 band tensioner band and everted by its movement in the conveying direction.
  • a tape guiding device 7 has been brought into the belt plane and also moves in the conveying direction. Since the object 6 in the horizontal at the position of the tape guide 4 is over, now lowers the tape guide. 4
  • FIG. 3 shows the result of these movements. It is the situation at a time after the ones in FIG. 2 is shown.
  • the tape guide 4 has now pressed the tape 3 behind the object 6 under the conveying plane 1 or out.
  • the band guiding device 7 has guided the band below the conveying plane 1 such that a free space 17 has formed between the band 3 and the conveying plane 1 or the object 6.
  • the counter pressure plate 9 has been introduced.
  • the tape guide device 7 can be removed again.
  • the front holding device 8 moves upward to clamp the band 3 between itself and the counter-pressure plate 9.
  • the tape tensioner 5 While the tape guide 4 presses the tape below the conveying plane 1, the tape tension is regulated by the tape tensioner 5 to the target voltage or even to a higher voltage.
  • FIG. 4 The situation at a later date is in FIG. 4 shown.
  • the band 3 is held by the front holder 8. Therefore, the rear holder 2 could release the tape.
  • the two jaws of the rear holding device 2 divide into an upper jaw 2b and a lower jaw 2a.
  • a Bandbendingshaltevorraum 10 moves upward, thereby leading the now free beginning of tape in the direction counterpressure plate. 9
  • the tape 3 is now pressed by the Bandguidingshaltevorraum 10 and the front holder 8 to the platen 9.
  • the so fixed band section is but only the beginning of the band.
  • Another band part runs over or through the band guide 4.
  • a loop puller 11 is introduced there is now between the band guide 4 and band 3. He moves in the conveying direction while pulling the band 3.
  • the belt tension is held by the belt tensioner 5 at the high value of the target tension or slightly higher.
  • FIG. 6 shows the resulting from the movement of the loop puller 11 loop.
  • the upper jaw 2b of the rear holder is inserted into the loop and moves upwards.
  • the lower jaw 2a of the rear holder also moves upward.
  • the band 3 is now clamped twice in the region of the loop: once at a position on the upper side of the loop between the counter-pressure plate 9 and the upper jaw 2b. This is the further holding device.
  • a second time the band 3 is clamped in the region of the lower side of the loop between the upper jaw 2b and the lower jaw 2a.
  • a separator 12 which may be a knife, for example, cuts the tape just before the rear holder.
  • FIG. 8 the connection between the overlapping band sections has just been made by the joining device 13.
  • the band 3 no longer needs to be held against the counterpressure plate 9 and therefore the front holding device 8, the strip top holding device 10 and the rear holding device 2 are released, both jaws 2a and 2b pressed against one another and holding the new strip beginning, away from the counterpressure plate 9 and thus solves the further holding device.
  • the counterpressure plate 9 can subsequently also be removed.
  • FIG. 9 shows the result: The object 6 with folded tape, when banding the banded object is removed. Here, this also happens in the conveying direction.
  • the mechanism for transferring a tape around an object eg, a banding or strapping mechanism
  • FIG. 10 shows possible rest positions of the components, which get in the course of the process in the band level and are removed from it.
  • the term "rest position” is understood here as the position in which the components fulfill their primary task or not. Of course, other components can make such movements.
  • FIG. 10 It concerns with FIG. 10 to a sketch of the supervision on the conveying plane 1.
  • the conveying plane 1 and all components shown are shown transparently. Only their contours are shown.
  • the conveying plane 1 has an opening 14 and this has a front edge 15.
  • the conveying direction 16, which defines the direction for "front” and “rear” is shown by an arrow.
  • On the right side of the opening 14, the counter-pressure plate 9 is in its rest position. Below the counter-pressure plate 9 are parts of the different holding devices: The front holder 8, the upper jaw of the rear holder 2b and the Bandguidingshaltevorraum 10th
  • the upper jaw of the rear holding device 2b is driven into the rest position in a situation in which at least the front holding device 8 and the counterpressure plate 9 are used. At the time when the counter-pressure plate 9 is removed, the upper jaw of the rear holder 2b is already in use again to hold the next beginning of the tape.
  • the tape guide device 7 and the loop puller 11 are shown as hooks in the embodiment. These can be brought by a pivoting movement in the belt plane and then pushed or pulled in the conveying direction.
  • the tape guiding device 7 initially guides the tape 3 further in the conveying direction than the object 6 and the object 6 only at a later point in time FIG. 3 reached shown position.
  • the tape guide 4 can already occupy a lower position at an earlier time. However, it should not collide with object 6.
  • the tape guiding device 7 can be removed before or after the pressing of the front holding device 8.
  • the front holding device 8 does not necessarily have to use the counterpressure plate 9 as the second clamping jaw, but could have a separate second jaw.
  • the tape guide 11 may be designed so that the loop begins and ends at her.
  • the band 3 can be held on the band guide 4 with a suitable device.
  • the loop may begin at the tape guide 4 and terminate at the corner of the object 6, the edge of the platen 9, or the edge of the tape top retainer 10. It is the preferred solution that the corner of the object 6 limits the loop, as the band 3 so tight against the object 6.
  • the further holding device is formed by the upper jaw 2 b of the rear holding device and the counter-pressure plate 9.
  • the others But holding device can also consist of two own jaws or a jaw and the counter-pressure plate. 9
  • the placement of the band tensioner 5 is also variable.
  • a pulley may hold the tape over the object at the location shown here. But it is also possible that the tape 3 is guided through the tape guide 4, that the tape guide 4 can hold the band 3 up without further aids.
  • the strap tensioner could then be placed anywhere between the strap source and the strap guide 4. Also, the band tensioner can be integrated into the band source, in which he controls, for example, the rotation of a supply roll.
  • the inventive device for introducing a counter-pressure plate is in FIG. 3 shown.
  • FIG. 4 Then it is clear how the tape guide device 7 fulfills its task of enabling the introduction of a counter-pressure plate 9.
  • the band tensioner 5 and the band guide 4 are no more than the band 3 or the object 6 parts of this device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Claims (15)

  1. Procédé d'enroulement d'une bande (3) autour d'au moins un objet (6),
    dans lequel il s'agit d'un procédé de banderolage longitudinal et/ou d'un procédé de cerclage longitudinal, dans lequel la boucle de bande d'objet est formée autour de l'objet au moins en partie par un mouvement de l'objet dans une direction de transport et
    dans lequel l'au moins un objet est entouré d'une bande, dans lequel la bande est agencée sous la forme d'une boucle de bande d'objet autour de l'au moins un objet de telle sorte qu'au moins deux sections de bande sont amenées à se chevaucher et reliées, dans lequel dans une zone dans laquelle les au moins deux sections de bande sont amenées à se chevaucher, une plaque de contre-pression (9) est introduite entre l'au moins un objet et la bande et les au moins deux sections de bande se chevauchant sont pressées contre la plaque de contre-pression pour la liaison,
    caractérisé en ce que
    avant l'introduction de la plaque de contre-pression, la bande est guidée par un dispositif de guidage de bande (7) et/ou positionnée de façon à créer un espace libre défini (17) pour l'introduction de la plaque de contre-pression (9).
  2. Procédé d'enroulement d'une bande autour d'au moins un objet selon la revendication 1, caractérisé en ce qu'une liaison par correspondance de matière est établie, en particulier par un procédé de soudage, de préférence par un procédé de soudage aux ultrasons.
  3. Procédé d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 1 à 2, dans lequel la boucle de bande d'objet est amenée autour de l'objet avec un procédé qui comprend les étapes de :
    a) maintien d'un début de bande dans un dispositif de maintien arrière (8) sous le plan de transport (1)
    b) serrage d'une bande entre le dispositif de maintien arrière qui maintient le début de bande et un guide de bande pouvant être abaissé se trouvant dans un plan au-dessus des objets
    c) déplacement d'une partie de la bande dans la direction de transport par l'objet, qui se déplace sur le plan de transport dans la direction de transport et rabat ainsi la bande
    d) placement d'une autre section de la bande sous le plan de transport par le guide de bande et
    e) formage de la bande en une boucle, laquelle se trouve sous le plan de transport, est fermée dans la direction de transport et part du guidage de bande, en particulier à l'aide d'un tire-boucle (11).
  4. Procédé d'enroulement d'une bande autour d'au moins un objet selon la revendication 3, dans lequel l'introduction de la plaque de contre-pression comprend les étapes suivantes de :
    a) maintien d'un début de bande dans un dispositif de maintien arrière sous le plan de transport
    b) déplacement d'une partie de la bande dans la direction de transport par un objet, qui se déplace sur le plan de transport dans la direction de transport
    c) guidage et/ou positionnement de la bande par le dispositif de guidage de bande de façon à créer un espace libre défini pour l'introduction de la plaque de contre-pression et
    d) introduction de la plaque de contre-pression sous le plan de transport dans l'espace libre créé par le dispositif de guidage de bande entre la bande et l'objet.
  5. Procédé d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 3-4, dans lequel les étapes suivantes sont réalisées pour le chevauchement des sections de bande :
    a) maintien d'un début de bande dans un dispositif de maintien arrière sous le plan de transport
    b) déplacement d'une partie de la bande dans la direction de transport par un objet, qui se déplace sur le plan de transport dans la direction de transport
    c) placement d'une autre partie de la bande sous le plan de transport par le guide de bande
    d) maintien de la bande à un endroit avant par un dispositif de maintien avant
    e) libération du début de bande par le dispositif de maintien arrière, en particulier temporellement après les étapes de procédé susmentionnées
    f) formation d'une boucle à partir de la bande, laquelle se trouve sous le plan de transport, est fermée dans la direction de transport et part du guidage de bande à l'aide du tire-boucle
    g) maintien de la bande dans la zone d'une partie supérieure de la bande par un autre dispositif de maintien
    h) sectionnement de la bande au niveau de la bande et
    i) extension de la boucle maintenant ouverte en particulier par le tire-boucle, dans lequel la boucle était aussi grande avant le sectionnement et un point de séparation a été choisi de sorte que la bande chevauche le début de bande.
  6. Procédé d'enroulement d'une bande autour d'au moins un objet selon la revendication 5, dans lequel les autres étapes suivantes sont réalisées pour le chevauchement des sections de bande :
    a) placement et maintien du début de bande à un endroit, qui se trouve au-dessus d'une boucle, qui est générée par le tire-boucle, par le dispositif de maintien de début de bande.
  7. Procédé d'enroulement d'une bande autour d'au moins un objet, dans lequel la liaison de bande comprend les étapes suivantes :
    a) introduction de la plaque de contre-pression selon la revendication 4
    b) chevauchement des sections de bande selon la revendication 5 et
    c) liaison des sections de bande selon la revendication 2 dans la zone du chevauchement.
  8. Dispositif d'introduction d'une plaque de contre-pression entre une bande et un plan de transport dans une machine de banderolage et/ou machine de cerclage, en particulier dans un procédé selon la revendication 4, comprenant :
    a) un dispositif de maintien arrière (8), lequel peut maintenir un début de bande et
    b) un plan de transport (1) avec une ouverture (14), laquelle se trouve au-dessus du dispositif de maintien arrière et sur lequel un objet peut être déplacé dans une direction de transport, dans lequel lors de ce mouvement de l'objet, une bande, dont le début est maintenu par le dispositif de maintien arrière et qui traverse l'ouverture dans le plan de transport, est tirée dans la direction de transport (16) par l'ouverture dans le plan de transport
    caractérisé en ce que
    c) un dispositif de guidage de bande (7) est présent qui positionne la bande sous le plan de transport et/ou la guide de façon à créer un espace libre (17) pour introduire la plaque de contre-pression (9) entre la bande (3) et le plan de transport (1).
  9. Dispositif d'enroulement d'une bande autour d'au moins un objet, en particulier une machine de banderolage et/ou une machine de cerclage, comprenant les parties suivantes :
    a) un dispositif d'introduction d'une plaque de contre-pression selon la revendication 8
    b) un guide de bande pouvant être abaissé, lequel se trouve dans un plan au-dessus des objets et lequel peut se trouver sous un plan de transport et peut guider la bande dans les deux positions et serre la bande entre lui dans une position initiale dans le plan au-dessus des objets et le dispositif de maintien arrière
    c) une plaque de contre-pression, qui peut être amenée sous le plan de transport entre la bande et la face inférieure de l'objet et être retiré
    d) un dispositif de maintien avant, qui peut fixer la bande à un endroit avant le dispositif de maintien arrière
    e) un tire-boucle (11) qui peut tirer la bande du guide de bande dans la position sous le plan de transport, en partant dans la direction de transport, à une boucle
    f) un dispositif de sectionnement (12), qui peut séparer la bande, de préférence directement derrière le dispositif de maintien arrière et
    g) un dispositif de jonction (13), qui peut relier la bande à lui-même dans une zone de chevauchement.
  10. Dispositif d'enroulement d'une bande autour d'au moins un objet selon la revendication 9, caractérisé en ce que le dispositif comprend plusieurs, de préférence 2, bobines d'alimentation pour bandes et
    que de préférence les bobines d'alimentation sont coordonnées par une commande de bobines d'alimentation de telle sorte que respectivement une bobine d'alimentation peut être remplacée pendant que des bandes sont déroulées d'une autre bobine d'alimentation.
  11. Dispositif d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 9-10, caractérisé en ce qu'il comprend un accumulateur de bande, lequel permet au procédé de banderolage de continuer à fonctionner pendant un certain de temps, sans être freiné ou seulement au ralenti, sans que la bande de l'autre côté de l'accumulateur de bande ne se déplace au raison du procédé de banderolage, dans lequel l'accumulateur de bande est contrôlé en particulier par une commande d'accumulateur de bande.
  12. Dispositif d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 9-11, caractérisé en ce qu'il comprend un dispositif de liaison, avec lequel une fin de bande d'une bande sur une première bobine d'accumulation peut être reliée à un début de bande d'une bande sur une deuxième bobine d'alimentation.
  13. Dispositif d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 9-12, caractérisé en ce
    que le dispositif comprend une unité d'imprimante pour l'impression de la bande avant et/ou pendant l'opération de banderolage ou de cerclage,
    dans lequel l'unité d'imprimante est de préférence une imprimante à transfert thermique.
  14. Dispositif d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 9-13, caractérisé en ce
    qu'au moins un des entraînements utilisés est réalisé par au moins un servomoteur et que de préférence l'au moins un servomoteur peut être commandé par accès à distance.
  15. Dispositif d'enroulement d'une bande autour d'au moins un objet selon l'une quelconque des revendications 9-14, caractérisé en ce
    que le dispositif comprend au moins un capteur qui peut mesurer de préférence la pression sur les paquets et/ou la traction sur la bande et/ou la courroie et/ou la présence de rouleaux d'alimentation et/ou la qualité de l'impression et/ou une autre propriété du dispositif, du paquet et/ou de la bande et/ou de la courroie.
EP16700400.1A 2015-01-15 2016-01-07 Procédé d'enroulement de bandes autour d'objets et machines correspondantes Active EP3137381B1 (fr)

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PL16700400T PL3137381T3 (pl) 2015-01-15 2016-01-07 Sposób owijania taśmy wokół obiektów i urządzenie do realizacji tego sposobu

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EP15000087.5A EP3045398A1 (fr) 2015-01-15 2015-01-15 Procédé d'enroulement de bandes autour d'objets et machines correspondantes
PCT/EP2016/050212 WO2016113179A1 (fr) 2015-01-15 2016-01-07 Procédé permettant de poser des bandes autour d'objets et machines associées

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EP3137381B1 true EP3137381B1 (fr) 2017-11-29

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EP (2) EP3045398A1 (fr)
CN (1) CN107438568B (fr)
CA (1) CA2974045C (fr)
ES (1) ES2661005T3 (fr)
PL (1) PL3137381T3 (fr)
TW (1) TWI691434B (fr)
WO (1) WO2016113179A1 (fr)

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EP3798143A1 (fr) 2019-09-30 2021-03-31 Signode Industrial Group LLC Tête de soudage pour une machine de cerclage et plaque de contre-pression pouvant être utilisée dans celle-ci
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US11814198B2 (en) 2020-06-18 2023-11-14 Packway Inc. Relaxation device of cardboard strapping machine

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Publication number Publication date
US20180022489A1 (en) 2018-01-25
WO2016113179A1 (fr) 2016-07-21
ES2661005T3 (es) 2018-03-27
CA2974045A1 (fr) 2016-07-21
PL3137381T3 (pl) 2018-04-30
CA2974045C (fr) 2023-12-19
TW201636268A (zh) 2016-10-16
EP3045398A1 (fr) 2016-07-20
TWI691434B (zh) 2020-04-21
US10865004B2 (en) 2020-12-15
CN107438568A (zh) 2017-12-05
EP3137381A1 (fr) 2017-03-08
CN107438568B (zh) 2019-08-13

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