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EP3093244B2 - Dispositif de transport de feuille pour une machine d'emballage - Google Patents
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EP3093244B2 - Dispositif de transport de feuille pour une machine d'emballage - Google Patents

Dispositif de transport de feuille pour une machine d'emballage Download PDF

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Publication number
EP3093244B2
EP3093244B2 EP15167656.6A EP15167656A EP3093244B2 EP 3093244 B2 EP3093244 B2 EP 3093244B2 EP 15167656 A EP15167656 A EP 15167656A EP 3093244 B2 EP3093244 B2 EP 3093244B2
Authority
EP
European Patent Office
Prior art keywords
film
guide
transport
belt
packaging machine
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
EP15167656.6A
Other languages
German (de)
English (en)
Other versions
EP3093244B1 (fr
EP3093244A1 (fr
Inventor
Frank Stiehl
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.)
Bizerba SE and Co KG
Original Assignee
Bizerba SE and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=53177207&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3093244(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bizerba SE and Co KG filed Critical Bizerba SE and Co KG
Priority to EP15167656.6A priority Critical patent/EP3093244B2/fr
Publication of EP3093244A1 publication Critical patent/EP3093244A1/fr
Publication of EP3093244B1 publication Critical patent/EP3093244B1/fr
Application granted granted Critical
Publication of EP3093244B2 publication Critical patent/EP3093244B2/fr
Active legal-status Critical Current
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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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/54—Wrapping by causing the wrapper to embrace one end and all sides of the contents, and closing the wrapper onto the opposite end by forming regular or irregular pleats
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/06—Advancing webs by friction band
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B2051/105—Heat seal temperature control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C1/00—Labelling flat essentially-rigid surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/511—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning
    • B65H2301/5111—Printing; Marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/252—Details of idler roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/25—Driving or guiding arrangements
    • B65H2404/255—Arrangement for tensioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/81—Packaging machines

Definitions

  • the invention relates to a packaging machine with a film transport device for transporting a plastic film according to the features of the preamble of claim 1.
  • Such a packaging machine is from the WO 2004/000651 A1 known. There a film packaging machine is described in which a pair of deflection rollers followed by a pair of guide rollers is arranged in the inlet area of the film handling unit. Such film packaging machines are used in practice to package products with a sealable stretch film or a sealable plastic film.
  • U.S. 5,855,106 A a packaging machine is known in which a product is wrapped with a stretch film and packaged.
  • This packaging machine has a film transport device with two drive belts circulating over end pulleys.
  • the drive belts are arranged one above the other and transport a stretch film located between the two drive belts in the direction of transport.
  • Corresponding plastic films or stretch films that can be processed by the packaging machine are, for example, from the EP 0 687 558 B1 known. These are stretchable plastic films that can be sealed at elevated temperatures. Since these films are extremely thin, film transport and handling are associated with special requirements. For example, if there are manufacturing tolerances in the film or if there are changes in the ambient conditions, such as air humidity or temperature, problems may arise during the transport of the film.
  • the object of the present invention is to create a packaging machine with a film transport device which has a higher level of functional reliability when transporting plastic films.
  • the film transport device should be insensitive to temperature fluctuations or manufacturing tolerances of the plastic film.
  • the film transport device of the packaging machine has a belt conveyor device, the belt conveyor device in the inlet area having two deflecting rollers arranged vertically one above the other and in alignment with one another and at least two guide rollers or guide axles downstream of the deflecting rollers in the transport direction for guiding or supporting a strand of a drive rime, the upper deflecting roller and at least one of the guide rollers or guide axles cooperating with the upper drive belt and the lower deflecting roller and at least one of the guide rollers or guide axles cooperating with the lower drive belt.
  • the guide rollers downstream of the deflection rollers in the transport direction of the plastic film have the effect that the transport belt is precisely guided and supported in the entrance area by the guide roller or guide axis.
  • the position and the transport properties of the transport belt can be precisely determined.
  • a certain amount of evasion of the transport belt is possible, so that thickness tolerances of the plastic film can also be compensated for.
  • both the upper conveyor belt and the lower conveyor belt are supported by the guide roller or guide axle, both the upper conveyor belt and the lower conveyor belt are supported on both sides. As a result, the plastic film is safely guided and transported on both sides, i.e. both on its upper side and on its lower side, by the two transport belts.
  • Both transport belts of the belt conveyor are guided over end pulleys.
  • deflection rollers are arranged on both sides of the drive belt, which guide the drive belt continuously around it.
  • To transport the plastic film it is fed between the lower run of the upper conveyor belt and the upper run of the lower conveyor belt in an inlet area of the belt conveyor device.
  • the two deflecting rollers of the upper conveyor belt and the lower conveyor belt which are arranged one above the other, have the same diameter.
  • a pair of deflecting rollers arranged one above the other is driven by a motor.
  • the deflection rollers are connected to one another and to a drive motor via a gear, preferably a toothed wheel drive or toothed belt drive.
  • the two pulleys lying one above the other are driven in opposite directions by the drive motor.
  • the guide rollers or guide axles have a smaller diameter than the deflection rollers.
  • the diameter of the guide rollers or guide axles is preferably less than half the diameter of the deflection rollers.
  • the diameter of the guide rollers is dimensioned the same as one another, i. H. the guide rollers used preferably all have the same diameter.
  • the diameter of the guide axles is dimensioned to be the same as one another, i. H. the guide axles used preferably all have the same diameter.
  • the guide rollers have different diameters and are preferably designed in an eccentric design in order to ensure precise adaptation to belt tolerances.
  • a belt conveyor device can have both guide axes and guide rollers.
  • the diameter of the guide axles can be dimensioned differently from the diameter of the guide rollers.
  • the inlet area of the belt conveyor is the area in which the deflection rollers and the guide rollers or guide axles are arranged.
  • the inlet area extends from the end of the belt conveyor device, at which the deflection rollers are arranged, to further guide elements of the belt conveyor device, which are formed by guide surfaces.
  • the inlet area can extend in the area of 2 to 4 times the diameter of a deflection roller, based on the end of the belt conveyor device on the foil inlet side.
  • the guide rollers and / or guide axles are arranged between the deflection rollers and the guide surfaces as additional elements for supporting or guiding the conveyor belts.
  • a guide roller is understood to be a guide element which has an axis of rotation and rotates about this axis of rotation when the transport belt moves along the guide roller.
  • a guide axis is understood to mean an axis which is in contact with a strand of the conveyor belt and supports it.
  • At least one transport belt can preferably be designed as a toothed belt in order to ensure exact positioning.
  • one transport belt or both transport belts can be designed as a grooved belt or as a V-belt or as a flat belt.
  • the guidance of the conveyor belt is further improved. It is provided that no further guide elements are arranged between the deflection rollers and the guide rollers and / or guide axles. In particular, it is provided that the guide rollers and / or guide axles, viewed in the film transport direction, adjoin the deflection rollers with only a small distance, preferably at a distance that is smaller than twice the diameter of a deflection roller.
  • both the deflection rollers and the guide rollers and / or guide axles are jointly mounted on a carrier of the belt conveyor device.
  • the carrier can be made from a stamped sheet metal or as a bent part or from a semi-finished product.
  • two belt conveying devices running parallel and at a distance from one another in a horizontal film transport plane are provided for the transport of a plastic film, the distance between the two belt conveying devices preferably being adjustable and / or adjustable by means of a motor.
  • the film transport device thus has two belt conveying devices which are arranged such that the distance between the belt conveying devices corresponds to the width of the plastic film to be transported.
  • Each of the belt conveyor devices can grip an edge area of the film and transport the film.
  • the distance between the two belt conveying devices can be adjusted automatically via a motor.
  • a belt conveyor device or that each belt conveyor device has an upper guide surface and a lower guide surface for guiding the drive belts and / or the plastic film and the at least two or at least three guide rollers or guide axes based on the film transport direction between the two in the guide rollers arranged in the inlet area and the upper guide surface and the lower guide surface are arranged.
  • a transport with low frictional resistance of the film results in that it is provided in one embodiment that the middle guide roller or the middle guide axis is arranged at such a vertical distance from the two other guide rollers or guide axes that the upper conveyor belt and the lower conveyor belt in the The area between the three guide rollers or guide axes run in a straight line, preferably parallel to the transport plane.
  • the middle guide roller or the middle guide axis is arranged at such a vertical distance from the two other guide rollers or guide axes that the upper transport belt and the lower transport belt in the area between the three guide rollers or guide axes S. -shaped.
  • This alternative embodiment with the S-shaped course of the drive belt has the advantage that the wrapping of the drive belts with the film is more intensive, so that the transport force in the inlet area of the belt conveyor is higher compared to a straight course.
  • the friction and thus the required transport force are somewhat lower.
  • one or more of the guide rollers and / or guide axles on the belt conveyor can be displaced in the vertical direction and can be fixed in an optional position.
  • the exact course of the conveyor belts and thus ultimately the force exerted by the conveyor belt on the plastic film can be set or adjusted within certain limits.
  • a fourth guide roller is designed as a deflection roller and interacts with the upper run of the upper conveyor belt or with the lower run of the lower conveyor belt.
  • the number of guide rollers and / or guide axes is also more than four, in particular five, six, seven or eight guide rollers and / or guide axes. It has been shown, however, that the increased design effort associated with increasing the number of guide rollers and / or guide axles increases with the number of these elements more than the precision to be achieved in guiding the conveyor belts. The use of three or four guide rollers or guide axles therefore represents an advantageous compromise between construction effort and precise guidance of the conveyor belts and / or the plastic film.
  • a belt conveyor device or each of the belt conveyor devices has a clamping device which, via one or more actuators interacting with the lower guide surface, varies the distance and / or the contact pressure between the lower guide surface and the upper guide surface, preferably provided is that each actuator can be controlled individually. This enables the clamping device to be designed to be integrated in the film transport device. A separate clamping device or clamps are therefore not required.
  • the actuators can be designed as lifting actuators and have an electric motor with linear output or a pneumatic cylinder or a lifting magnet as the drive element.
  • the film transport device is used in a packaging machine for packaging goods with a plastic film and / or a stretch film.
  • the packaging machine has a film dispensing device and one between the film dispensing device and the film transport device arranged film transfer device with a in the film transport plane horizontally in the direction of the film transport device to and away from the film transport device driven film guide element to feed plastic film to the inlet area of the film transport device.
  • the film guide element has an upper guide plate and a lower guide plate arranged parallel to this, which are arranged so that there is a gap between the two guide plates for guiding plastic film is present, wherein the gap is aligned with the film transport plane and that it is preferably provided that the film guide element has a pair of transport rollers interacting with the plastic film with an upper transport roller and a lower transport roller for transporting the plastic film.
  • the thin plastic film is supported flat both upwards and downwards via the two guide plates. This effectively prevents the plastic film from forming folds, which would seriously disrupt the transport of the plastic film and the packaging process.
  • the plastic film is freely guided in the space between the two guide plates.
  • the film is, so to speak, floating in the space between the two guide plates.
  • the floating mounting makes it possible, within certain limits, to avoid errors that could occur due to a film that is inserted at an angle or an imprecise film width.
  • the film guide device When the plastic film is transported, it is transferred from the film guide device to the film transport device.
  • the film is well supported during the transfer and that folding or kinking of the film is reliably avoided, so that the upper guide plate and the lower guide plate each have a recess in an overlap area of the belt conveyor devices, which are arranged and dimensioned in this way is that both clamping plates in a film transfer position to be shifted to the film transport device engage at least with a middle section of their edge facing the film transport device between the two belt conveyor devices.
  • the film guide element is designed as a slide mounted displaceably parallel to the film transport plane and driven by a slide drive motor, whereby it is preferably provided that the slide either has a toothed rack or toothed section meshing with a toothed wheel driven by the slide drive motor or is connected to a drive belt driven by the carriage drive motor.
  • a film cutting device for cutting off plastic film can be arranged between the film transfer device and the film transport device.
  • the film transfer device and the film dispensing device, and preferably the film cutting device are designed as an exchangeable assembly, and this assembly is interchangeable and mechanically fixed on a frame or on a housing of the packaging machine is held connected to this frame or housing.
  • the packaging machine Since several functional components of the packaging machine are mechanically connected to one another and arranged on their own module carrier, they are designed as a jointly exchangeable assembly. As a result, the packaging machine is designed to be modularly expandable or adaptable. For example, the film width to be processed can be changed by exchanging the assembly with the functional units of the film dispensing device and the film transfer device. As a further advantage, the packaging machine can be easily transported by removing the assembly from the housing or a frame of the packaging machine and thus reducing the dimensions and / or the weight of the packaging machine.
  • a quick-release fastener in particular a bayonet fastener or a toggle fastener, is arranged between a housing or a frame of the packaging machine and the assembly.
  • the assembly or the module can be removed from the housing or the frame or connected to the housing or the frame in a simple manner via this quick-release fastener.
  • the assembly preferably the film dispensing device
  • the assembly or the film dispensing device can be opened up and a film roll can be exchanged in a simple manner.
  • the packaging machine Setting up the packaging machine is simplified by the fact that it has adjustable feet. With the height-adjustable feet, the packaging machine can be precisely aligned horizontally, even if the installation location is uneven.
  • the packaging machine according to the invention can be used, for example, when packaging food.
  • Food especially fresh food such as cheese and / or meat and / or sausage and / or vegetables, are often sold in portions in tray shells.
  • Such tray shells can be packed using the packaging machine according to the invention with the film transport device according to the invention, i.e. they can be wrapped with stretch film or plastic film.
  • After the products have been packaged they can be provided with a label on which, for example, the weight of the packaged food and / or the time and / or date of the packaging process is printed.
  • the packaging machine has one or more printers which are arranged or attached to a housing or frame of the packaging machine. These printers print out a label on which data such as the weight of the packaged product and / or the current date are given. These labels are picked up by a label applicator and placed on the packaged product.
  • the label applicator can be designed as an automated label stamp which is mounted on the housing of the packaging machine and / or a frame of the packaging machine.
  • the packaged products can also be labeled manually, with an operator manually sticking the printed label onto the packaged product.
  • the packaging machine has a scale in one embodiment.
  • the scales can in particular be arranged in the entrance area of the packaging machine, so that the product to be packed is forcibly guided over the load sensor of the scales.
  • the determined weight is passed on from the scales via a connection to a label printer so that the printer can print out a corresponding label with the weight of the scales.
  • FIG. 1 shows a schematic representation of a packaging machine 1 with a film transport device 2.
  • a schematic plan view In the upper part of FIG Fig. 1 is a schematic plan view and in the lower part of FIG Fig. 1 a tilted side view of the packaging machine 1 is shown.
  • the packaging machine 1 comprises several functional units and components accommodated in or on a housing 11, such as the film transport device 2, a film dispensing device 217, a film transfer device 216 and a film cutting device 215 arranged between the film transfer device 216 and the film dispensing device 217 the film dispenser 217 is inserted and held by a film holder or roll holder. From there, the film K is transferred to the film transport device 2 by means of the film transfer device 216 and is cut to a suitable length by the film cutting device 215.
  • An Indian Fig. 1 For the sake of clarity, printers (not shown) for printing labels and a labeling device (not shown) for applying the labels are also arranged on the housing 11 of the packaging machine 1 in order to label the finished packaged products.
  • the packaging machine 1 has a feed belt 102, via which products P to be packaged can be fed to the packaging machine 1.
  • a scale 101 for determining the weight of the products fed in is arranged below the feed belt 102.
  • the packaging process works as follows.
  • the product P is conveyed from the feed belt 102 onto a lifting table 105.
  • the lifting table 105 conveys the product P upwards to the stretch film K located in the film transport device 2.
  • the stretch film K automatically wraps itself around the product P during the lifting process the product is folded over so that the product is completely enclosed by the film K.
  • the product is then pushed out of the film packing area onto a sealing plate 107 via a pusher 109.
  • the sealing plate is heated to a temperature at which the undersides of the plastic film K are welded or sealed to one another.
  • the packaged product P is then transported via a transverse conveyor belt 106 to the labeling device (not shown in the figures) and provided with a label.
  • the printer connected to the scale 101 prints a label with the weight of the product.
  • the labeling device then takes the label from the printer and applies it to the packaged product.
  • the packaging machine 1 has two processing levels arranged one above the other.
  • the first processing level runs at the level of the feed belt 102.
  • the second processing level runs at the level of the sealing plate 107 and the cross conveyor belt 106 and the film transport device 2. This arrangement has the advantage that the packaging machine 1 can process two packs at the same time with a small footprint or footprint. While the first package is being packed with stretch film or sealed over the sealing plate 107, a second package can already be fed in via the feed belt 102.
  • a plastic film that can be stretched i.e. a so-called stretch film
  • This film is thermoplastic and can be sealed or welded at high temperature.
  • the thickness of the film is in a range between 10 ⁇ m and 60 ⁇ m.
  • the film is guided from the film dispensing device 217 via a film transfer device 216 and a film cutting device 215 to a film transport device 2.
  • the film transport device 2 as well as the film cutting device 215 and the film transfer device 216 are shown in a schematic side view.
  • the plastic film K is in the Figure 2 film roll, not shown, starting over Deflection rollers 225a, 225b and 225c out and deflected into a horizontal film transport plane.
  • the film K is transported in the direction of transport, in Fig. 2 represented by the arrow X, transported.
  • the film transfer device 216 has a slide 229 which can be moved back and forth along the film transport direction X for guiding or supporting the film K.
  • the carriage 229 is moved along the transport direction of the film K via a carriage drive motor 219.
  • the slide 229 has a toothed rack 221 which meshes with a toothed wheel 220 driven by the slide drive motor 219 via a toothed belt 223. By reversing the direction of rotation of the carriage drive motor 219, the carriage 229 can be driven either in the transport direction X or against the transport direction X.
  • the carriage 229 In order to guide the film K, the carriage 229 has an upper film guide plate 218a and a lower film guide plate 218b.
  • the upper film guide plate 218a and the lower film guide plate 218b are arranged to run parallel to the film transport plane.
  • An intermediate space is arranged between the two film guide plates 218a and 218b, which space is aligned with the film transport plane and into which the film K can be inserted.
  • the film K is supported flat by the film guide plates 218a and 218b, so that it is guided safely and without creases.
  • the film K rests on the lower plate 218b.
  • the top plate 218a prevents the film from rising during transport.
  • the carriage 229 has an upper transport roller 224a and a lower transport roller 224b interacting with this.
  • the plastic film K is conveyed by these two transport rollers 224a and 224b in the transport direction.
  • a drive motor not shown, which drives at least one of the two transport rollers 224a or 224b, acts on the film K in the transport direction. If the drive motor stops, the two transport rollers 224a and 224b fix the film. This prevents the film K from being able to be pulled out of the packaging machine 1 in the opposite direction to the transport direction if it is subjected to tensile stress.
  • the upper guide plate 218a is pivotably mounted on the slide 229. This can be swiveled open in order to conveniently insert the film K between the two film guide plates 218a and 218b.
  • the upper film guide plate 218a can then be folded down again so that the film K is safely guided between the two film guide plates. In order to obtain a clean leading edge of the film, it can be provided that the leading edge of the film is cut off by the cutting device 215.
  • the film transport device 2 has two belt conveyor devices 201 and 202 which are arranged parallel to one another and are spaced apart and which are largely constructed in the same way.
  • Each belt conveyor device has a carrier 214, on which the two deflection rollers 205 and 206 arranged in the inlet area E lie one above the other and are arranged in alignment with one another.
  • the inlet area E of a belt conveyor 201 or 202 comprises the two aligned deflection rollers and the guide rollers 211, 212, 213, 226 adjoining the deflection rollers 205 and 206.
  • the inlet area extends from the two deflection rollers 205 and 206 to the beginning of the film guide surfaces 207 and 208.
  • the upper deflection roller 205 guides the upper drive belt 203.
  • the lower deflection roller 206 guides the lower drive belt 204.
  • the plastic film K is transferred in the inlet area E from the film transfer device 216 to the film transport device 2, ie inserted between the upper drive belt 203 and the lower drive belt 204 .
  • the upper side of the film K is guided by the lower run 203b of the upper drive belt 203 and on its lower side by the upper run 204a of the lower drive belt 204.
  • the upper drive belt 203 is guided in a circumferential manner via end pulleys. Both drive belts 203 and 204 are driven synchronously and convey the plastic film K in the transport direction X.
  • the film transport device has 2 film guide elements.
  • the lower strand 203b of the upper conveyor belt 203 is guided by a film guide surface or drive belt guide surface 207 or is supported upward.
  • the upper run 204a of the lower drive belt 204 is guided over film guide surfaces or drive belt guide surfaces 208 or supported downward.
  • the lower film guide surface 208 is divided into several short guide sections, each of these guide sections having its own lifting actuator 209 or 210 in order to lift or press the guide surface 208 upwards against the upper guide surface 207.
  • the plastic film K is clamped between the two drive belts 203 and 204 and thereby fixed.
  • a first guide roller 211 is arranged in such a way that it interacts with the upper run of the lower drive belt 204 and supports it downward.
  • a second film guide roller 212 is arranged, which interacts with the lower run of the upper drive belt and guides or supports it upwards.
  • a third film guide roller 213 is arranged further offset in the film transport direction and in turn interacts with the upper run 204a of the lower drive belt 204 in order to support it in turn downwards.
  • This arrangement of the drive rollers results in a very good, flexible support of the drive belts in order to ensure that the plastic film K can be transported without complications in the inlet area.
  • FIG. 5 an alternative arrangement of the film guide rollers 211, 212 and 213 is shown.
  • the two outer guide rollers 211 and 213 are offset upwards.
  • the middle guide roller 212 is offset downwards so that the drive belts between the three guide rollers have an S-shaped course. This S-shaped course causes closer contact and thus better transport of the plastic film K.
  • the arrangement shown has a higher overall friction than that in the Fig. 2 illustrated arrangement.
  • Both the upper drive belt and the lower drive belt are guided in a straight line in the film transport direction X between the three guide rollers 211, 212 and 213.
  • a fourth guide roller 226 cooperates with the upper drive belt 203 in that the guide roller 226 guides the upper run 203a of the upper drive belt 203.
  • the tension of the upper drive belt 203 can be adjusted via this roller 226.
  • Fig. 3 and 4th a top view of the film transfer device 216 with the carriage 229 and the film transport device 2 is shown.
  • This illustration clarifies the transfer of the foil from the foil transfer device 216 to the foil transport device 2
  • Fig. 3 shows a shifted back position of the slide 229.
  • the slide 229 driven by the slide drive 219, moves forward in the direction of the film transport device 2 and thereby takes the film K inserted between the two film guide plates 218a and 218b with it.
  • a front transfer position of the carriage 229 is shown.
  • the film K is transferred to the inlet area E of the film transport device 2.
  • the film transport device 2 takes over the transport of the film K in the transport direction X.
  • the upper guide plate 218a and the lower guide plate 218b have recesses 228a and 228b arranged in an overlap area with the film transport device 2.
  • the recesses are U-shaped and are arranged and dimensioned in such a way that they each encompass a belt conveyor device 201 and 202 of the film conveyor device 2.
  • the film transport device 2 takes over the film K from the film transfer device 218 in the inlet area E.
  • the film transport device 2 then transports the film K in the film transport direction until the front edge of the film K has reached the end of the film transport direction.
  • the film transport device then stops the film transport.
  • the film K is then cut off via the film cutting device 215.
  • the lifting actuators 209 and 210 clamp the film K between the upper guide surface 207 and the lower guide surface 208.
  • the two belt conveyors 201 and 202 are then laterally removed from one another in order to stretch the film for a subsequent packaging process.
  • first belt conveyor 201 is moved transversely to the film transport direction X via a drive motor or the second belt conveyor 202 is moved transversely to the film transport direction X or both belt conveyors 201 and 202 are moved at the same time transversely to the film transport direction X in order to increase the distance between the two belt conveyors 201 and 202 to enlarge.
  • the product P is lifted from the underside by the lifting table 105 and moved upwards through the film transport plane and the film K, whereupon the film K expands further and thereby envelops the product P.
  • the lifting table 105 has lifted the product P completely, the lateral folding tongs 108a and 108b as well as the rear folding tong 110 grip the ends of the film K and fold them over one another underneath the product.
  • the film K is welded over the sealing plate 107.
  • the film transfer device 216 is designed in such a way that the width of the two guide plates essentially corresponds to the width of the plastic film K. As a result, good guidance of the plastic film is achieved.
  • the distance between the two belt conveyor devices 201 and 202 of the film conveyor device 2 is also matched to the width of the plastic film. This means that the distance is dimensioned such that the drive belts 203 and 204 and / or the film guide surfaces 207 and 208 of the two belt conveyor devices 201 and 202 each guide or grip an edge region of the film K.
  • the packaging machine 1 can process different film widths. To set the packaging machine 1 to a different film width, the distance between the two belt conveyor devices 201 and 202 can be changed, i.e. increased or decreased.
  • the film transfer device 216 is adapted to the corresponding film width by exchanging the film guide plates 218a and 218b.
  • the packaging machine 1 has a modular structure. It comprises the machine housing 11 with the film transport device 2.
  • the film transfer device 216 is designed together with the film dispensing device 217 as a common structural unit or as a module. Both components, that is to say the film transfer device 216 and the film dispensing device 217, are mechanically connected to one another via a frame to form a structural unit.
  • the housing 11 of the packaging machine has a receiving space for receiving or holding the structural unit. This assembly of the film transfer device 216 and the film dispensing device 217 can be removed from the housing 11 of the packaging machine 1 by releasing a mechanical connection.
  • a second subassembly tailored to this film width can be connected to the housing 11 or can be accommodated in the receiving space of the housing. Another advantage is that the packaging machine 1 has smaller dimensions and / or a lower weight when the structural unit is removed and is therefore easier to transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (13)

  1. Machine d'emballage pour l'emballage d'articles avec une feuille de matière plastique ou un film étiré, la machine d'emballage comprenant un dispositif de distribution de feuilles (217) et un dispositif de transfert de feuilles (216) disposé entre le dispositif de distribution de feuilles (217) et un dispositif de transport de feuilles (2), avec un élément de guidage de feuilles (227) entraîné horizontalement dans le plan de transport des feuilles pour pouvoir s'approcher du dispositif de transport de feuilles et s'éloigner du dispositif de transport de feuilles, afin d'introduire la feuille de matière plastique (K) dans la zone d'entrée (E) du dispositif de transport de feuilles (2), le dispositif de transport de feuilles pour le transport d'une feuille de matière plastique (K) avec au moins un dispositif de convoyage à courroies (201, 202), le dispositif de convoyage à courroies (201, 202) comprenant deux courroies de transport (203, 204), entraînées de manière synchrone dans une direction de transport des feuilles, qui sont guidées chacune de manière circulaire sans fin par l'intermédiaire de poulies de renvoi d'extrémité (205, 206) et sont superposées de façon à ce que, entre le brin inférieur (203b) de la courroie de transport supérieure (203) et le brin supérieur (204a) de la courroie de transport inférieure (204), une feuille de matière plastique (K), introduite dans une zone d'entrée (E) du dispositif de convoyage à courroies (201, 202), s'emboîte entre le brin inférieur (203b) de la courroie de transport supérieure (203) et le brin supérieur (204a) de la courroie de transport inférieure (204) et peut être transportée dans la direction de transport des feuilles,
    le dispositif de convoyage à courroies (201, 202) comprenant, dans la zone d'entrée, deux poulies de renvoi (205, 206) disposées verticalement l'une au-dessus de l'autre et alignées entre elles et au moins deux poulies de guidage (211, 212, 213) ou axes de guidage disposés en aval des poulies de renvoi dans la direction de transport pour le guidage ou l'appui d'un brin d'une courroie de transmission, la poulie de renvoi supérieure (205) et au moins une des poulies de guidage (212) ou un des axes de guidage interagissant avec la courroie de transmission supérieure (203) et la poulie de renvoi inférieure (206) et au moins une des poulies de guidage (211, 213) ou un des axes de guidage interagissant avec la courroie de transmission inférieure (204),
    caractérisée en ce que
    le dispositif de convoyage à courroies (201, 202) comprend, dans la zone d'entrée, au moins trois poulies de guidage (211, 212, 213) et/ou axes de guidage, disposés en aval des deux poulies de renvoi (205, 206) dans la direction de transport des feuilles et distants entre eux dans la direction de transport des feuilles et
    a) soit la poulie de guidage centrale (212) ou l'axe de guidage central guide le brin inférieur (203b) de la courroie de transport supérieure (203) et les deux autres poulies de guidage (211, 213) et/ou axes de guidage guident le brin supérieur (204a) de la courroie de transport inférieure (204)
    b) soit la poulie de guidage centrale (211) ou l'axe de guidage central guide le brin supérieur (204a) de la courroie de transport inférieure (204) et les deux autres poulies de guidage (212, 213) et/ou axes de guidage guident le brin inférieur (203b) de la courroie de transport supérieure (203),
    et en ce que deux dispositifs de convoyage à courroies (201, 202) s'étendant parallèlement dans un plan horizontal de transport des feuilles et avec une distance entre eux sont prévus pour le transport d'une feuille de matière plastique (K).
  2. Machine d'emballage selon la revendication 1,
    caractérisée en ce que
    la distance entre les deux dispositifs de convoyage à courroies est ajustable et/ou réglable de manière motorisée.
  3. Machine d'emballage selon l'une des revendications 1 et 2,
    caractérisée en ce que
    un dispositif de convoyage à courroies (201, 202) ou chaque dispositif de convoyage à courroies comprend une surface de guidage supérieure (207) et une surface de guidage inférieure (208) pour le guidage des courroies de transmission (203, 204) et/ou de la feuille de matière plastique (K), et les au moins trois poulies de guidage (211, 212, 213) ou axes de guidage sont disposés, par rapport à la direction de transport des feuilles, entre les deux poulies de renvoi (205, 206) disposées dans la zone d'entrée (E) et la surface de guidage supérieure (207) et la surface de guidage inférieure (208).
  4. Machine d'emballage selon l'une des revendications 1 à 3,
    caractérisée en ce que
    la poulie de guidage centrale ou l'axe de guidage central est disposé avec une distance verticale par rapport aux deux autres poulies de guidage ou axes de guidage, telle que la courroie de transport supérieure et la courroie de transport inférieure s'étendent, dans la zone entre les trois poulies de guidage ou axes de guidage, en ligne droite, de préférence parallèlement au plan de transport.
  5. Machine d'emballage selon l'une des revendications 1 à 3, caractérisée en ce que
    la poulie de guidage centrale ou l'axe de guidage central est disposé avec une distance verticale par rapport aux deux autres poulies de guidage ou axes de guidage, telle que la courroie de transport supérieure et la courroie de transport inférieure s'étendent, dans la zone entre les trois poulies de guidage ou axes de guidage, sous la forme d'un S.
  6. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    une ou plusieurs des poulies de guidage (211, 212, 213) et/ou axes de guidage est/sont logés sur le dispositif de convoyage à courroies (201, 202) de manière mobile dans une direction verticale et de façon à pouvoir être fixés dans une position sélectionnée.
  7. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    une quatrième poulie de guidage (226) est conçue comme une poulie de renvoi et interagit avec le brin supérieur (203a) de la courroie de transmission supérieure (203).
  8. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    un dispositif de convoyage à courroies (201, 202) ou chacun des dispositifs de convoyage à courroies comprend un dispositif de serrage qui fait varier, par l'intermédiaire d'un ou plusieurs actionneurs (209, 210) interagissant avec la surface de guidage inférieure (208), la distance et/ou la force de pression entre la surface de guidage inférieure (208) et la surface de guidage supérieure (207), moyennant quoi, de préférence, il est prévu que chaque actionneur (209, 210) peut être contrôlé individuellement.
  9. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    l'élément de guidage de feuilles (227) comprend une plaque de guidage supérieure (218a) et une plaque de guidage inférieure (218b), disposée parallèlement par rapport à celle-ci, qui sont disposées de façon à ce que, entre les deux plaques de guidage (218a, 218b), un espace intermédiaire existe pour le guidage de la feuille de matière plastique (K), l'espace intermédiaire étant aligné avec le plan de transport des feuilles, et en ce que, de préférence, il est prévu, que l'élément de guidage de feuilles (227) comprend une paire de poulies de transport interagissant avec la feuille de matière plastique (K), avec une poulie de transport supérieure (224a) et une poulie de transport inférieure (224b) pour le transport de la feuille de matière plastique.
  10. Machine d'emballage selon la revendication 9,
    caractérisée en ce que
    la plaque de guidage supérieure (218a) et la plaque de guidage inférieure (218b) comprennent chacune, dans une zone de recouvrement des dispositifs de convoyage à courroies (201, 202), un évidement (228a, 228b), qui sont disposés et dimensionnés de façon à ce que les deux plaques de serrage (218a, 218b) s'emboîtent, dans une position de transfert de feuilles, décalée vers le dispositif de transport de feuilles (2), au moins avec une portion centrale de leur arête orientée vers le dispositif de transport de feuilles entre les deux dispositifs de convoyage à courroies (201, 202).
  11. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    l'élément de guidage de feuilles (227) est conçu comme un chariot logé de manière mobile parallèlement au plan de transport des feuilles et peut être entraîné par l'intermédiaire d'un moteur d'entraînement de chariot (219), moyennant quoi, de préférence, il est prévu que le chariot (227) comprend soit une crémaillère (221) ou une portion dentée s'engrenant avec une roue dentée (220) entraînée par le moteur d'entraînement de chariot (219) soit est relié avec une courroie d'entraînement entraînée par le moteur d'entraînement de chariot.
  12. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    entre le dispositif de transfert de feuilles (216) et le dispositif de transport de feuilles (2) est disposé un dispositif de découpe de feuilles (215) pour la découpe de la feuille de matière plastique.
  13. Machine d'emballage selon l'une des revendications précédentes,
    caractérisée en ce que
    le dispositif de transfert de feuilles (216) et le dispositif de distribution de feuilles (217) et, de préférence, le dispositif de découpe de feuilles (215) sont conçus comme un sous-ensemble remplaçable et ce sous-ensemble est maintenu contre un châssis ou un boîtier (11) de la machine d'emballage (1) de manière remplaçable et reliée mécaniquement fixement avec ce châssis ou ce boîtier (11).
EP15167656.6A 2015-05-13 2015-05-13 Dispositif de transport de feuille pour une machine d'emballage Active EP3093244B2 (fr)

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EP15167656.6A EP3093244B2 (fr) 2015-05-13 2015-05-13 Dispositif de transport de feuille pour une machine d'emballage

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EP3093244B1 EP3093244B1 (fr) 2018-03-21
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EP3187425B1 (fr) 2015-12-30 2019-06-05 Bizerba SE & Co. KG Procede destine au fonctionnement d'une machine d'emballage
CN108557144B (zh) * 2018-05-11 2023-08-18 张福明 用金/银色膜仿手工包装收银纸的包装机
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EP3587289B1 (fr) 2018-06-25 2020-07-29 Bizerba SE & Co. KG Dispositif de transport de feuilles pour une machine d'emballage destinée à l'emballage dans une feuille étirable
EP3611100B1 (fr) 2018-08-13 2020-07-15 Bizerba SE & Co. KG Machine d'emballage dotée d'un dispositif de pesage
EP3613676B1 (fr) 2018-08-21 2021-03-24 Bizerba SE & Co. KG Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée
CN109335784A (zh) * 2018-09-28 2019-02-15 浙江凯阳新材料股份有限公司 薄膜输送连杆
EP3659933B1 (fr) 2018-11-27 2021-04-28 Bizerba SE & Co. KG Machine d'emballage destinée à l'emballage avec feuille extensible
EP3671142B1 (fr) 2018-12-20 2022-11-09 Bizerba SE & Co. KG Cellule de pesage et pied de pesage
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EP3783302B1 (fr) 2019-08-20 2023-04-26 Bizerba SE & Co. KG Système de mesure d'objet pour une machine d'emballage permettant de déterminer les dimensions d'une surface de base et d'une hauteur d'une barquette d'emballage à enrouler
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CN111776360A (zh) * 2020-07-15 2020-10-16 上海固好包装机械有限公司 智能三边封机
CN114604670A (zh) * 2022-03-25 2022-06-10 杭州展拓智能控制技术有限公司 片状物料同步展平结构
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