EP3613676B1 - Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée - Google Patents

Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée Download PDF

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Publication number
EP3613676B1
EP3613676B1 EP18189912.1A EP18189912A EP3613676B1 EP 3613676 B1 EP3613676 B1 EP 3613676B1 EP 18189912 A EP18189912 A EP 18189912A EP 3613676 B1 EP3613676 B1 EP 3613676B1
Authority
EP
European Patent Office
Prior art keywords
blade
guide
film
knife
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
EP18189912.1A
Other languages
German (de)
English (en)
Other versions
EP3613676A1 (fr
Inventor
Sascha Kirsch
Franz Heller
Eugen Ellis
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
Application filed by Bizerba SE and Co KG filed Critical Bizerba SE and Co KG
Priority to EP18189912.1A priority Critical patent/EP3613676B1/fr
Priority to US16/542,320 priority patent/US11124325B2/en
Publication of EP3613676A1 publication Critical patent/EP3613676A1/fr
Application granted granted Critical
Publication of EP3613676B1 publication Critical patent/EP3613676B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic 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
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • 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
    • 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
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/06—Cutting webs along their longitudinal direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/944—Multiple power sources for one mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/946—Means for restitution of accumulated energy, e.g. flywheel, spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • 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 for packaging goods to be packaged by means of a stretchable film.
  • the packaging machine comprises a film transport device for feeding film to a packaged item to be packaged and a knife device.
  • the knife device can be transferred from a rest position into an extended position by a drive with a driving force.
  • the knife device has a return mechanism that is spatially separated from the drive, the return mechanism being activated when the knife device is transferred from the rest position to the extended position, and the return mechanism in the activated state exerts a return force on the knife device in the extended position in the direction of the rest position can be exercised, which is greater than the return resistance of the knife device in the extended state, by means of which the knife device is held in the extended state without the action of the driving force.
  • the US-A 5 014 489 discloses a food tray packaging machine.
  • the packaging machine comprises a film roll for a film, a motor for driving the transport of the film and a motor controller for controlling the motor.
  • the motor control starts the transport of the film to a packaging station when a sensor signals the presence of a food tray. On the slide there are spaced markings in the longitudinal direction of the film.
  • the motor control stops the film when it receives a signal from a marking sensor that registers a mark on the film.
  • a perforating knife perforates the film along a line across the width of the film, but without cutting through the film.
  • the food tray is moved from below against the film. Folding arms fold the film around the food tray and separate a sheet of film from the rest of the film along the perforated line. Then the wrapped food tray is transported away.
  • a stretch film packaging machine with high performance can pack more than 35 packaging goods, in particular large tray trays, per minute.
  • Very powerful machines can achieve more than 40, depending on the pack size, even up to 50 packs per minute with small tray trays.
  • a knife of the knife device slides across the film, making a cut in the film, which leads to a relatively slow cutting process.
  • the cutter device is moved towards the film by the drive before the cutting process, cuts through the film over its entire width, and is moved away from the film after the cutting process.
  • the object of the present invention is to modify a packaging machine of the type defined at the outset and a packaging method in such a way that the knife device is retrieved without the action of the drive, preferably automatically.
  • a generic packaging machine of the type defined at the outset which is characterized in that the knife device has a knife for cutting film from the film feed and the film through the knife device in the in the extended position that the knife device is connected via the return mechanism to a housing surrounding the knife device, that the knife device has a knife guide, the return mechanism having a second elastic element, which has one end on the knife guide and the other end on the Knife is attached, and that the knife, under tension of the second elastic element, can be transferred from a first knife position within the knife guide into a second knife position in which the knife protrudes over the knife guide and below Relaxation of the second elastic element from the second knife position can be transferred back into the first knife position.
  • Knives inter alia, are known from the prior art which press on the film with a cutting edge the width of the entire film.
  • the knife In order to cut through the film, the knife is applied to the film over its entire width with an electric motor or a lifting magnet pressed. After the cutting process, the knife is withdrawn using the electric motor or the lifting magnet.
  • the return of the knife is done, if necessary, by means of a spring.
  • a tension spring is used in particular for the spring support.
  • a tension spring can be tensioned and relieved three to five times a minute. The return of the knife with the force of a tension spring alone is not possible.
  • the eyelets of a tension spring are often prone to breakage.
  • the drive of the knife in particular in the form of the electric motor or lifting magnet, always acts in both directions, both when moving the knife towards the film and when moving the knife away from the film.
  • the return mechanism according to the invention is used to return from the extended position to the rest position against the return resistance of the knife device, the return mechanism not requiring the drive.
  • the return resistance includes all forces without the force of the drive that act on the knife device in the extended state and counteract a return of the knife device. In particular, these forces include frictional and inertial forces.
  • the drive can be designed mechanically, electrically or magnetically.
  • the return mechanism enables the drive to only act in the cutting direction of the knife, the knife guide being transferred from the rest position to the extended position in the cutting direction.
  • the drive is then preferably decoupled or switched off.
  • the return mechanism then brings about an automatic return of the knife device from the extended position to the rest position counter to the cutting direction.
  • a second elastic element which connects the knife guide and the knife, the movement of the knife guide with that of the Knife are coupled so that when the knife moves, the knife guide is automatically moved at least a little.
  • the use of an elastic element enables different geometric settings of the knife and the knife guide relative to one another.
  • the knife preferably cuts through the film completely on the transition from the first to the second knife position.
  • the movement of the knife in the cutting direction is preferably controlled by the drive, the knife guide being held back by a stop.
  • a spring force that is opposite to the cutting direction builds up. After switching off the drive, this spring force pulls the knife back into the first knife position.
  • An advantageous embodiment of the packaging machine according to the invention is characterized in that the return mechanism has a first elastic element which is in particular fastened indirectly to the knife of the knife device.
  • the first elastic element fastened to the knife can be brought into a tense form by the movement of the knife device from the rest position into the extended position. This builds up the force that is required to return the knife device to the rest position. The return then takes place automatically with the relaxation of the elastic element.
  • a preferred further development of this embodiment is characterized in that the first elastic element is designed as a compression spring and is preferably connected to the knife device by means of a rod.
  • compression springs are characterized by their high load capacity. They can be used with rapid repetition and with strong spring forces to return the knife guide to the rest position.
  • the rod is preferably passed through the compression spring.
  • a compression spring can be tensioned and relieved up to a hundred times a minute.
  • the knife guide comprises one or more guide plates, preferably in the form of two guide plates lying opposite one another.
  • the control of the movement of the knife is considerably improved by a knife guide.
  • the film feed has a film guide element with a cutting gap which is spaced from the knife device in the rest position by a film feed gap, the knife device, in particular the knife guide, resting against the film guide element in the extended position.
  • the film preferably rests against the film guide element and is pressed against the film guide element by the knife device, in particular the knife guide. This causes a deformation of the Foil, in particular an elastic film, prevented. This enables the film to be cut precisely.
  • a further development of these embodiments is characterized in that the knife protrudes through the cutting gap of the film guide element in the extended position of the knife device, in particular the knife guide.
  • the knife preferably by the drive, can be transferred from the first knife position to the second knife position in the extended position of the knife guide, with it reaching through the cutting gap while the knife guide strikes the foil guide element.
  • the knife cuts through the film.
  • the knife can automatically be returned to the first knife position by the second elastic element, in particular by switching off the drive.
  • the packaging machine has further elastic elements, in particular in the form of at least one further compression spring and / or at least one further leaf spring.
  • the return forces can be increased and a failure of an elastic element can be compensated for.
  • a preferred embodiment of the packaging machine is characterized in that the knife guide has at least one slide guide, in particular two slide guides, for at least one slide block formed on the knife, in particular two slide blocks.
  • the sliding blocks are preferably on the Housing that surrounds the knife device and thus serve to center the knife.
  • a further development of this embodiment is characterized in that at least one, in particular circular, spacer is arranged on the knife guide between the knife guide and the housing surrounding the knife device, which during the transfer of the knife device from the rest position to the extended position along the housing of the knife device can be performed, wherein in particular two spacers are arranged opposite one another on the knife guide. These spacers cause the knife guide to be centered.
  • a particularly preferred variant of this class of configurations is characterized in that the sliding block is arranged on the housing, reaches through the spacer and engages in the slide guide of the knife guide, with a slide block in particular reaching through two opposing spacers, which is inserted into a slide guide of the The knife guide engages. Then the sliding block or the sliding blocks limit the displacement of the knife guide in the cutting direction.
  • the film guide element has contact surfaces on the cutting gap, in particular rubber lips, for the film to be attached. Due to the elastic counterforce of the rubber lips, the film can be clamped particularly well between the rubber lips and the knife guide, which presses against the rubber lips in the extended position of the knife guide.
  • the drive has a pressure magnet which preferably only acts in the cutting direction of the knife device.
  • the pressure magnet is designed in particular as a lifting magnet, linear magnet and / or electromagnet.
  • the pressure magnet causes a linear movement.
  • the force of the pressure magnet only acts in the cutting direction, from the idle state of the knife device to the extended state. It can be switched off after the knife guide and knife have been extended, the return mechanism causing the knife and knife guide to automatically return to the rest position.
  • the drive and / or the return mechanism - in particular U-shaped - has coupling elements for connection to the knife, which are preferably insertable into recesses in the knife guide.
  • the U-shaped coupling elements grip around the knife and can then be fastened to the knife in a simple manner with bolts guided through the knife.
  • the coupling elements are formed on rods of the pressure magnet, of the first elastic element and / or on the second elastic element, in order to establish a mechanical connection with the knife in each case.
  • Fig. 1 shows a longitudinal section through a film transfer as part of a packaging machine 10 .
  • the packaging machine 10 comprises a film feed 11 , through which film is fed from a film supply (not specifically shown in the drawing) to a film transport device 12.
  • the film transport device 12 transports the film to the location of the packaging of a packaged item (not shown).
  • a knife device 13 according to the invention for cutting the film to size is located between the film feed 11 and the film transport device 12.
  • the knife device 13 has a knife guide 14 in the form of two opposing guide plates 14a , 14b .
  • a knife 15 is located between the guide plates 14a, 14b.
  • the knife 15 and the knife guide 14 are elastically connected to one another (see Fig. 5 ).
  • Circular spacers 16a , 16b are attached to the guide plates 14a, 14b to maintain the distance between the guide plates and a housing 17 of the knife device 13 which surrounds the knife device 13.
  • the knife 15, the guide plates 14a, 14b and the circular spacers 16a, 16b form a sandwich-like structure.
  • the knife device 13 Opposite the knife device 13 is a film guide element 19 with contact surfaces 20a , 20b (see FIG Fig. 2 ) in the form of rubber lips for attaching the film.
  • a film feed gap 22 for guiding the film through is formed between the knife device 13 and the film guide element 19.
  • the guide plates 14a, 14b are pressed against the contact surfaces 20a, 20b when the film is cut (see FIG Fig. 3 ).
  • the contact surfaces 20a, 20b are arranged around a cutting gap 23 through which the knife 15 can reach to cut the film (cf. Fig. 4 ).
  • a drive 9 in the form of a pressure magnet 25 moves the knife device 13 via a pressure magnet rod 26 only in one cutting direction 27 towards the film guide element 19.
  • the pressure magnet 25 is designed in particular as a lifting magnet, linear magnet or electromagnet which only acts in the cutting direction 27.
  • the movement of the knife guide 14 in the direction 30 opposite the cutting direction 27 is carried out by a return mechanism according to the invention (see FIG Fig. 2 ).
  • Fig. 2 shows a longitudinal section through the film guide element 19 and the knife device 13 with a return mechanism 31a according to the invention.
  • the return mechanism 31a is arranged along the guide plates 14a, 14b offset from the pressure magnet 25 (see FIG. Fig. 5 ).
  • the knife device 13 has the knife guide 14 in the form of the guide plates 14a, 14b and the knife 15 arranged between the guide plates 14a, 14b.
  • the return mechanism 31a includes a first elastic member 32a in the form of a compression spring 33a around a rod 34a of the return mechanism 31a, on which a stop 35a for the compression spring 33a is arranged.
  • the compression spring 33a and the rod 35a are arranged in the housing 17 of the knife device 13.
  • the housing 17 can be formed in one piece or in several pieces.
  • the rod 34a has at one end 37a a U-shaped coupling element 38a which is firmly connected to the knife 15 via a bolt 39a passed through the knife 15.
  • the knife device 13 is in a rest position 40 .
  • the film feed gap 22 is formed between the knife device 13 and the film guide element 19 with the contact surfaces 20a, 20b.
  • the compression spring 33a With one by the pressure magnet 25 (see Fig. 1 ) caused movement of the knife device 13 in the cutting direction 27 towards the film guide element 19, the compression spring 33a is pressed against the housing 17 and compressed. It then acts on the stop 35a with a force which is opposite to the cutting direction 27. After the pressure magnet 25 has been switched off, the pressure spring 33a relaxes, as a result of which the knife device 13 is returned to the rest position 40.
  • Fig. 3 shows a longitudinal section through the film guide element 19 and the knife device 13, the knife device 13 being in an extended position 41 .
  • the two guide plates 14a, 14b are in contact with the contact surfaces 20a, 20b of the film guide element 19, bridging the film feed gap 22.
  • the rod 34a of the return mechanism 31a is partially extended and a distance 42 in the cutting direction 27 is formed between the housing 17 of the knife device 13 and the U-shaped coupling element 38a.
  • the knife 15 is in a first knife position 43 arranged within the knife guide 14 between the two guide plates 14a, 14b.
  • Fig. 4 shows a longitudinal section through the film guide element 19 and the knife device 13, the knife 15 being in a second knife position 44 .
  • the knife guide 14 in the form of the two guide plates 14a, 14b rests on the contact surfaces 20a, 20b of the film guide element 19.
  • the knife 15 between the two guide plates 14a, 14b of the knife guide 14 reaches through the cutting gap 23 of the film guide element 19 in the second knife position 44 Fig. 3 ) into the second knife position 44 by the drive of the pressure magnet 25 (see Fig. 1 ) the knife 15 cuts through the film attached to the film guide element 19.
  • Fig. 5 shows a plan view of the pressure magnet 25, the film guide element 19 and the knife device 13 in the rest position 40 (see Fig. 2 ).
  • the knife 15, the contact surface 20b of the film guide element 19 and the film feed gap 22 are shown.
  • a return mechanism 31a, 31b, each with a first elastic element 32a, 32b in the form of a compression spring 33a, is located along the knife 15 on both sides of the pressure magnet 25. 33b arranged.
  • Each return mechanism 31a, 31b and the pressure magnet 25 is connected via a coupling element 38a, 38b, 38c on the respective rod 26, 34a, 34b (see Fig. 6 ) and a bolt 39a, 39b, 39c firmly connected to the knife 15.
  • the knife 15 is connected to the knife guide 14 by second elastic elements 45a , 45b in the form of leaf springs 46a , 46b .
  • the leaf springs 46a, 46b are attached to the knife 15 via coupling elements 38d , 38e of the leaf springs 46a, 46b.
  • the coupling elements 38a-38e can When the knife 15 is moved in the cutting direction 27, insert it into recesses 47a , 47b , 47c, 47d , 47e of the knife guide 14.
  • Sliding blocks 48a , 48b are attached to the knife 15 and are moved in slotted guides 49a , 49b of the knife guide 14 and are guided along the housing 17 which surrounds the knife device 13. As a result, the sliding blocks 48a, 48b ensure that the knife 15 is centered. They also support the return movement of the knife guide 14 after the pressure magnet 25 has been switched off.
  • Fig. 6 shows a plan view of the pressure magnet 25, the film guide element 19 and the knife device 13 in the extended position 41 (see Fig. 3 ).
  • the knife 15 reaches through the film feed gap 22 (see Fig. 5 ).
  • the rods 26, 34a, 34b of the return mechanisms 31a, 31b and the pressure magnet 25 are partially extended.
  • the coupling elements 38a - 38e of the return mechanisms 31a, 31b and the stop 28 of the pressure magnet 25 are each at a distance from the housing 17 of the knife device 13 in the cutting direction 27.
  • Fig. 7 shows a plan view of the pressure magnet 25, the film guide element 19 and the knife device 13 in the extended position 41 (see Fig. 3 ), the knife 15 in the second knife position 44 (see Fig. 4 ) is located.
  • the coupling elements 38a - 38e associated with the return mechanisms 31a, 31b, the pressure magnet 25 and the leaf springs 46a, 46b have moved into the respective recesses 47a - 47e of the knife guide 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (14)

  1. Machine d'emballage (10) permettant d'emballer des produits à emballer au moyen d'un film étirable, comportant un dispositif de transport de film (12) permettant d'alimenter le film vers un produit à emballer et un dispositif à couteau (13) qui peut être transféré d'une position de repos (40) à une position déployée (41) par un entraînement (9) avec une force d'entraînement et qui présente un mécanisme de rappel (31a) spatialement séparé de l'entraînement (9), le mécanisme de rappel (31a) pouvant être activé avec le transfert du dispositif à couteau (13) de la position de repos (40) à la position déployée (41), et une force de rappel dans la direction (30) de la position de repos (40) pouvant être exercée sur le dispositif à couteau (13) dans la position déployée (41) par le mécanisme de rappel (31a) à l'état activé, laquelle force de rappel est supérieure à la résistance de rappel du dispositif à couteau (13) à l'état déployé (41), par laquelle le dispositif à couteau (13) est maintenu à l'état déployé (41) sans l'action de la force d'entraînement,
    caractérisée
    en ce que le dispositif à couteau (13) présente un couteau (15) destiné à couper le film à partir de l'alimentation en film (11) et le film peut être sectionné par le dispositif à couteau (13) en position déployée (41),
    en ce que le dispositif à couteau (13) est relié à un boîtier (17) entourant le dispositif à couteau (13) par l'intermédiaire du mécanisme de rappel (31a),
    en ce que le dispositif à couteau (13) présente un guide-couteau (14), le mécanisme de rappel (31a) présentant un second élément élastique (45a) qui est fixé au guide-couteau (14) avec une extrémité et au couteau (15) avec l'autre extrémité,
    et en ce que le couteau (15) peut être transféré, lors de la mise sous tension du second élément élastique (45a), d'une première position de couteau (43) à l'intérieur du guide-couteau (14) vers une seconde position de couteau (44) dans laquelle le couteau (15) fait saillie au-delà du guide-couteau (14), et peut être transféré de nouveau, lors de la détente du second élément élastique (45a), de la seconde position de couteau (44) à la première position de couteau (43).
  2. Machine d'emballage selon la revendication 1, caractérisée en ce que le mécanisme de rappel (31a) présente un premier élément élastique (32a) qui est fixé en particulier indirectement sur le couteau (15) du dispositif à couteau (13).
  3. Machine d'emballage selon la revendication 2, caractérisée en ce que le premier élément élastique (32a) est réalisé sous la forme d'un ressort de compression (33a) et est de préférence relié au dispositif à couteau (13) au moyen d'une tige (34a).
  4. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que le guide-couteau (14) présente une ou plusieurs plaques de guidage (14a, 14b), de préférence sous la forme de deux plaques de guidage opposées (14a, 14b).
  5. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que le second élément élastique (45a) du mécanisme de rappel (31a) est réalisé sous la forme d'un ressort à lame (46a).
  6. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que l'alimentation en film (11) présente un élément de guidage de film (19) doté d'une fente de coupe (23), lequel élément de guidage de film est espacé du dispositif à couteau (13) en position de repos (40) par une fente d'alimentation en film (22), le dispositif à couteau (13) reposant contre l'élément de guidage de film (19) dans la position déployée (41).
  7. Machine d'emballage selon la revendication 6, caractérisée en ce que le couteau (15) en position déployée (41) du dispositif à couteau (13), en particulier du guide-couteau (14), fait saillie à travers la fente de coupe (23) de l'élément de guidage de film (19).
  8. Machine d'emballage selon l'une des revendications 2 à 7, caractérisée en ce que la machine d'emballage (10) présente d'autres éléments élastiques (32b, 45b), en particulier sous la forme d'au moins un autre ressort de compression (33b) et/ou d'au moins un autre ressort à lame (46b).
  9. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que le guide-couteau (14) présente au moins un guide de coulisseau (49a), en particulier deux guides de coulisseau (49a, 49b), pour au moins un bloc coulissant (48a) réalisé sur le couteau, en particulier deux blocs coulissants (48a, 48b).
  10. Machine d'emballage selon la revendication 9, caractérisée en ce qu'au moins une entretoise (16a), en particulier circulaire, est disposée sur le guide-couteau (14) entre le guide-couteau (14) et le boîtier (17) entourant le dispositif à couteau (13), laquelle entretoise, pendant le transfert du dispositif à couteau de la position de repos (40) à la position déployée (41), peut être guidée le long du boîtier (17) du dispositif à couteau (13), deux
    entretoises (16a, 16b) étant en particulier disposées sur le guide-couteau (14) de façon à être opposées l'une à l'autre.
  11. Machine d'emballage selon la revendication 10, caractérisée en ce que le bloc coulissant (48a, 48b) est disposé sur le boîtier (17), traverse l'entretoise (16a) et s'engage dans le guide de coulisseau (49a) du guide-couteau (14), un bloc coulissant respectif (48a, 48b), lequel s'engage dans un guide de coulisseau respectif (49a, 49b) du guide-couteau (14), traversant en particulier deux entretoises (16a, 16b) opposées l'une à l'autre.
  12. Machine d'emballage selon l'une des revendications 6 à 11, caractérisée en ce que l'élément de guidage de film (19) présente des surfaces de contact (20a, 20b) sur la fente de coupe (23), en particulier des lèvres en caoutchouc, pour la fixation du film.
  13. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que l'entraînement (9) présente un aimant de compression (25) qui n'agit de préférence que dans la direction de coupe (27) du dispositif à couteau (13).
  14. Machine d'emballage selon l'une des revendications précédentes, caractérisée en ce que l'entraînement (9) et/ou le mécanisme de rappel (31a, 31b) présentent des éléments d'accouplement (38a, 38b), en particulier en forme de U, destinés à être reliés au couteau (15), lesquels peuvent être insérés de préférence dans des évidements (47a, 47b) du guide-couteau (14).
EP18189912.1A 2018-08-21 2018-08-21 Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée Active EP3613676B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18189912.1A EP3613676B1 (fr) 2018-08-21 2018-08-21 Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée
US16/542,320 US11124325B2 (en) 2018-08-21 2019-08-16 Packaging machine with a cutting device with optimized power consumption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18189912.1A EP3613676B1 (fr) 2018-08-21 2018-08-21 Machine d'emballage dotée d'un dispositif de coupe à consommation d'énergie optimisée

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EP3613676A1 EP3613676A1 (fr) 2020-02-26
EP3613676B1 true EP3613676B1 (fr) 2021-03-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4059848A1 (fr) 2021-03-17 2022-09-21 Bizerba SE & Co. KG Machine d'emballage pourvu d'aide au nettoyage intégrée

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021137923A (ja) * 2020-03-05 2021-09-16 津田駒工業株式会社 自動繊維束配置装置
DE102022104668A1 (de) 2022-02-28 2023-08-31 Tantum Sana Gmbh Schneidevorrichtung zur Segmentierung einer Blisterverpackung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922327U (de) * 1965-05-05 1965-08-26 Kalle Ag Querschneider fuer papier und folien.
US4624169A (en) * 1985-04-08 1986-11-25 Aerochem, Inc. Apparatus for automated cutting of thin films
US5014489A (en) * 1989-09-07 1991-05-14 Pacmac, Inc. Film sheet feed for food tray film wrapping machine
FR2745221B1 (fr) * 1996-02-28 1998-06-12 Arcil Dispositif de decoupe sequentiel et procede pour sa mise en oeuvre
DE102004029430A1 (de) * 2004-06-18 2006-01-05 Rovema Verpackungsmaschinen Gmbh Vorrichtung zum Verschweißen und Durchtrennen eines Folienschlauches
EP3093244B2 (fr) 2015-05-13 2022-01-05 Bizerba SE & Co. KG Dispositif de transport de feuille pour une machine d'emballage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4059848A1 (fr) 2021-03-17 2022-09-21 Bizerba SE & Co. KG Machine d'emballage pourvu d'aide au nettoyage intégrée

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US11124325B2 (en) 2021-09-21
EP3613676A1 (fr) 2020-02-26
US20200062436A1 (en) 2020-02-27

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