EP0814022A1 - Maschine zum Verpacken von Gruppen von Gegenständen - Google Patents

Maschine zum Verpacken von Gruppen von Gegenständen Download PDF

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Publication number
EP0814022A1
EP0814022A1 EP96401366A EP96401366A EP0814022A1 EP 0814022 A1 EP0814022 A1 EP 0814022A1 EP 96401366 A EP96401366 A EP 96401366A EP 96401366 A EP96401366 A EP 96401366A EP 0814022 A1 EP0814022 A1 EP 0814022A1
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EP
European Patent Office
Prior art keywords
film
tube
products
batch
plate
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.)
Withdrawn
Application number
EP96401366A
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English (en)
French (fr)
Inventor
Robert Perot
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP96401366A priority Critical patent/EP0814022A1/de
Publication of EP0814022A1 publication Critical patent/EP0814022A1/de
Withdrawn legal-status Critical Current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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/073—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web having intermittent motion
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B2009/063—Forming shoulders

Definitions

  • the present invention relates to a machine for packaging batches of products, particularly suitable for the automatic packaging of bakery products, such as baguette dough bundles or other pieces of bread, or any other product of elongated shape.
  • These bread dough pieces are generally delivered in the form of lots packed in a plastic envelope so as to protect them during their transport.
  • Such machines include a device for forming a film of packaging material into a tube with longitudinal joint by relative displacement of the film and the forming device, a product batch conveyor longitudinally movable between a retracted position for receiving a batch of products in which the conveyor is located upstream of the forming device, considering the direction of movement of the batches of products, and a position of engagement of a batch of products in the tube and of the cutting and tube closure arranged at the outlet of the tube forming device and adapted to separate the tube from the film coming from a supply reel from which it is formed and respectively close the rear end of a formed tube containing the batch of products and the anterior end of a forming tube.
  • a packaging machine for example, using two reels for feeding a film of material.
  • packaging in which the film forming device conforms each of the films taken from a corresponding reel into a half-tube.
  • the two half-tubes are joined by means of two opposite longitudinal welds to form a tube in which a batch of bread dough pieces is engaged.
  • this type of known packaging machine does not make it possible to pack a burden composed of a relatively large number of bread dough pieces due to the relative fragility of the tube of packaging material.
  • Another type of known packaging machine uses a single reel for supplying a film of packaging material arranged transversely to the path of the conveyor of batches of products.
  • the film is laid longitudinally around the film forming device which ensures the longitudinal welding of the opposite edges of the film.
  • Two traction rollers disposed at the outlet of the film forming device come into engagement with the longitudinal joint of the tube so as to advance the film in the forming device to constitute the tube.
  • This packaging machine also does not make it possible to pack a burden consisting of numerous loaves of bread, the film pulled tending to tear due to the resistance generated by the weight of the products engaged in the tube.
  • the invention aims to overcome the aforementioned drawbacks, by proposing a packaging machine making it possible to package a batch consisting of a large number of products, while using a film of particularly thin packaging material.
  • a machine for packaging batches each formed of at least one product, in particular at least one bakery product, by means of a film of packaging material taken continuously from a supply reel comprising a device for forming the film into a tube with longitudinal joint by relative displacement of the film and the forming device, a product batch conveyor longitudinally movable between a retracted position for receiving a batch of products in which the conveyor is located upstream of the forming device, considering the direction of movement of the batch of products, and a position of engagement of a batch of products in the tube and means for cutting and closing the tube arranged in exit from the film forming device and adapted to separate the tube from the film coming from the supply reel from which it is formed and close the rear end of a formed tube containing the batch of products and the front end respectively of a tube in formation, characterized in that the product batch conveyor comprises a piston for driving the batch of products contained in said transport tor and, via said batch, from the closed anterior end of the tube in formation, for driving the film with respect to the forming device
  • the film forming device comprises a film former forming a tunnel through which the product batch conveyor is movable and around which the film of packaging material passes, the closed anterior end of the tube in formation sealing the front end of the former and a junction plate disposed under the former and provided with slots for joining the opposite longitudinal edges of the film during the formation of the tube, said slots converging towards the front of the former in the direction of movement of batches of products.
  • the joining plate comprises two longitudinal film guide parts arranged side by side and each provided with an oblique cutout, said cutouts converging towards the front of the former and a triangular film holding plate cooperating with the edge of each cutout to form said slots for joining the edges of the film.
  • each of the film guide pieces has at its end opposite the oblique cut an opening for the passage of a corresponding film edge for its superposition with the other edge, a welding tip being disposed at said openings.
  • the opening for passage of a film edge of at least one of the film guide parts has a bent transverse slot in order to center a corresponding edge relative to the axis of the film joining plate.
  • the product batch conveyor comprises an elongated loading tray with U-shaped section open upwards and intended for the successive reception of the batches of products to be packaged and means for longitudinal displacement of the plate between said reception positions. and engaging a batch of products in the tube.
  • the product batch conveyor comprises a pusher movable axially and integrally with the loading plate in the direction of movement in the tube, said pusher and said plate being separable during the movement of withdrawal of said plate between said positions of engagement and reception in order to ensure immobilization of said pusher so as to axially maintain the products in the tube during said movement of withdrawal of the plate.
  • the machine comprises a member for detecting the position of the pusher adapted to cause the action of the tube cutting and closing means during the movement of withdrawal of said pusher between said position of engagement in the tube and said position. receiving lots.
  • the machine comprises a set of guide and film conveying rollers towards the forming device, and the reel for supplying the film of packaging material carries a film longitudinally folded at 180 °, the width of which is substantially equal to the perimeter of the forming device, said supply reel and said guide and conveying rollers being arranged substantially parallel to the direction of movement of the batches of products.
  • the film of packaging material is a polyethylene film 35 to 100 microns thick, or a composite film of polyethylene and polyester, said film having a thickness of 19 to 35 microns.
  • FIG. 1 shows a machine for packaging a batch of products, which has the reference numeral 10.
  • This machine 10 is intended to package a batch of dough for bread sticks 12 in a film 14 of packaging material, partially shown, taken from a film supply reel 16.
  • the machine 10 comprises a frame 18 which rests on feet, such as 20, and on which are arranged a film forming device 22 conforming the film 14 of packaging material, by displacement of the film relative to the forming device, in a horizontal tube with longitudinal joint and a product batch conveyor 24 longitudinally movable between a retracted position for receiving a batch of products and a position for engaging this batch of products in the tube.
  • the conveyor 24 is shown in its product reception position.
  • the conveyor 24 forms an assembly driving during its movement on the one hand the products it contains and on the other hand the film 14 relative to the device forming 22.
  • the machine 10 comprises means 26 for cutting and closing the tube arranged at the outlet of the forming device 22 and intended to separate a tube formed from the supply coil and close each of the front and rear ends of the tube.
  • These cutting and closing means 26 are constituted in a known manner by two welding faults, a single fault 28, actuated by a corresponding control arm 30, being shown in this figure.
  • conveying means 32 intended to transfer the dough pieces 12 packed to another processing machine not shown, are arranged at the outlet of the cutting and closing means 26.
  • the conveying means 32 are constituted in a known manner by a set of transfer rollers 34, two longitudinal guides 36 for laterally guiding the packed dough pieces and a retractable stop 38 for longitudinal positioning of the dough pieces.
  • the supply reel 16 is disposed next to the forming device 22 parallel to the direction of movement of the batches of products, on two drive rollers 40 actuated by motor means not shown and intended to cause the unwinding of coil 16.
  • the machine 10 is completed by a control console 42 of known type intended to allow the control of the operation of the machine and the synchronized action of the various constituent elements thereof.
  • the product batch transporter 24 includes a loading plate 44 and a plunger 46 forming a piston.
  • the loading tray 44 is produced for example by means of a metal sheet and has a bottom wall 48 and two side walls 50, so that the tray 44 has a U-shaped cross section open upwards. It is connected to motorized mechanical displacement means, not shown, and comprises at the level of the lower face of the bottom wall 48 a guide 52 cooperating, during the movement of the plate 44, with a slide 54 formed in the frame 18 , the side walls 50 cooperating in turn with two corresponding guides 56 secured to the frame.
  • the pusher 46 is connected to a jack 51, for example a pneumatic jack, and is axially displaceable with the loading plate 44 and in it.
  • a jack 51 for example a pneumatic jack
  • the means for moving the plate 44 and the pusher 46 generate, during a first phase, a simultaneous movement of this plate 44 of the pusher 46 and, during a second phase, a separate movement of the tray 44 and pusher 46.
  • the means of movement of the plate 44 are of known type. They comprise a tray support which is detachably connected to a toothed belt driven in rotation by a motor, and on which the jack 51 is fixed.
  • the machine further comprises a member for detecting the longitudinal position of the pusher 46, constituted for example by a sensor 57 disposed at the outlet of the forming device 22.
  • the film forming device 22 comprises a film former 60 produced for example by means of a metal sheet and which has the shape of a parallelepiped provided with an upper wall 62, a lower wall 64 and two side walls 66 and 68 and the anterior and posterior ends of which are open so as to form a tunnel in which the product batch transporter 24 can be moved.
  • the forming device comprises a plate 70 for joining the edge of the film arranged opposite the side walls 66, 68 and lower 64 of the shaper 60.
  • the plate 70 is formed by the association of two longitudinal film guide parts. 72 and 74, square-shaped and each made of sheet metal.
  • each guide piece 72 and 74 is provided, in its part opposite the bottom 64 of the shaper, of an oblique cut, respectively 76 and 78. These cutouts converge towards the front of the shaper 60 in the direction of movement of the dough pieces 12, from top to bottom in this figure.
  • the two guide pieces are arranged with a partial overlap so that the cutouts form a V-shaped housing 79 and are superimposed in front of this V-shaped housing.
  • connection plate 70 further comprises a film holding plate 80 of triangular and planar shape, cooperating with each of the cutouts 76 and 78 so as to form two slots 81 for joining the opposite longitudinal edges of the film during the passage of the film. 14 in the forming device 60.
  • one of the guide pieces such as 72, has a lateral extension 82 for fixing to the frame 18, the other piece 74 being fixed to the shaper 60.
  • each film guide part 72 and 74 has, at its end zone opposite the plate 80, an opening intended to receive a corresponding film edge with a view to its superposition with the other edge.
  • the opening of one of the guide pieces 72 is constituted by a bent slot 83 for centering an L-shaped film through which the corresponding film edge passes.
  • the opening of the other part 74 is constituted by a notch 84 but may also include a bent L-shaped slot.
  • the film forming device 22 further comprises a soldering tip 85 disposed under the film junction plate 70, downstream of the openings 83 and 84 and intended to ensure the fixing by welding of the opposite longitudinal edges of the film 14 superimposed flat. in the interval between the parts 72 and 74 defined in the area of the slot 83 and the notch 84.
  • this soldering failure 84 is a soldering failure by projection of hot air, but it can also be constituted by any other soldering failure of known type. It is actuated during the movement of the film, the welding being thus done during this movement of the film and before its change.
  • two longitudinal guides 86 and 88 are arranged opposite the upper wall 62 of the former 60 so as to press the film 14 against this upper wall 62 (FIG. 2).
  • the film of packaging material 14 wound around the supply reel 16 is in the form of a film longitudinally folded at 180 ° at its median zone, the fold situated in the background of FIG. 2.
  • the width of the film is preferably substantially equal to the perimeter of the forming device 22.
  • the film 14 taken from the supply reel 16 travels between a set of guide and film conveying rollers, such as 90, preferably each mounted parallel to the supply reel 16.
  • a set of guide and film conveying rollers such as 90, preferably each mounted parallel to the supply reel 16.
  • one of these rollers is provided with a film tensioner 92 and a tension sensor 94 intended to measure the tension of the film 14.
  • the film 14 Downstream of the guide rollers 90, the film 14 is presented at the level of the film forming device 22.
  • the film 14 Downstream of the guide rollers, the film 14 is in its folded form. It has a posterior fold 96 and two opposite longitudinal edges 98 and 100. The direction of movement of the batches of products is located from the left to the right in FIG. 4 and it is represented by the arrow F.
  • the film 14 opens and forms a flat strip of packaging material.
  • the film is then inserted into the tube forming device 22 between the upper wall 62 of the former 60 and the longitudinal guides 86, 88 so that on the one hand the underside of the strip of packaging material is pressed against the upper wall 62 and the side walls 66 and 68 of the former 60 and that on the other hand one of the longitudinal edges of the film 14 is inserted between the internal face of one of the guide pieces 72 and the external face of the side wall 66 of the former 60, the other longitudinal edge of the film 14 being pressed against the external face of the part situated opposite the side wall 68 of the former 60, of the other longitudinal film guiding piece 74.
  • each of the longitudinal edges of the film 14 is inserted into a corresponding slot 81 formed in the plate 70 for joining the film.
  • a first edge 102 of the film 14 is located under the film holding plate 80 as shown in dotted lines and extends forwards, above the corresponding film guide part 72 as shown in solid lines, then in the film centering slot 83 to then be located , at the outlet of the shaper 60, opposite the soldering failure 85.
  • the other longitudinal edge 104 runs from rear to front, namely from the rear end to the front end of the film joining plate 70, above the film holding plate 80, below of the film guide piece 74, then passes through the opening 84 at the level of which this edge 104 is superimposed with the first edge 102.
  • the longitudinal edges 102 and 104 of the film 14 are superimposed and can be joined by welding by means of the tip 85.
  • the particular path of the film of packaging material 14 around the shaper 60 makes it possible to obtain a tube of substantially rectangular section with longitudinal joint adapted to receive dough pieces to be packaged and through which the batch conveyor 24 can circulate.
  • a reel 16 supplying the film of full packaging material 14 is placed on the drive rollers 40.
  • This film of packaging material 14 is longitudinally folded in half and thus delivered in a compact reel.
  • the film is then passed between the guide rollers 90 and then placed around the shaper 60 according to the path described above so as to form a tube.
  • the cutting and closing means are actuated, for example manually, so as to close the front end of the tube thus formed.
  • This closed front end of the tube thus closes the front end of the former.
  • Bread dough pieces 12, previously counted and, where appropriate, frozen, are placed in batches, for example of 5,10,30 or 50 products, according to demand, in the product batch conveyor 24, on the loading tray 44.
  • the packaging machine 10 is then in the configuration shown in FIG. 5, in which the product batch conveyor 24 is in its retracted product reception position.
  • the product batch conveyor 24 is moved through the shaper 60 from its position for receiving a batch of products towards its position for engaging a batch in the tube in which this conveyor 24 is located beyond the means 26 for cutting and closing the tube 26.
  • the plate 44 and the plunger 46 forming the piston are moved simultaneously and integrally, the piston 51 not being actuated.
  • the product batch transporter 24 abuts against this closed anterior end of the tube and thus causes an increase in the tension of the film.
  • the opposite edges of the film are first of all brought together, superimposed, then welded by means of the tip 85.
  • the edge 102 of the film inserted into the bent slot 83 is precisely positioned relative to the median axis of the plate 70 for joining the film by pressing against the bottom of this slot 83.
  • the bend of the tube is precisely and regularly arranged along the formed tube.
  • the dough pieces 12 are located in the tube downstream from the tube cutting and closing means 26, as shown in FIG. 6.
  • the loading plate 44 is retracted from the position of engagement of a batch of products in the tube towards its position of reception of a next batch.
  • the actuator 51 is actuated and the pusher 46 is disengaged in displacement of the plate 44 and therefore remains stationary in the position for engaging lots in the tube so as to exert a force which is opposed to the return force exerted by the loading plate 44 on the dough pieces 12.
  • the pusher 46 is moved to the position for receiving batches by means of the jack 51.
  • the tube 114 formed and filled with products is therefore separated from the film 14 from the reel 16 from which it is formed and its rear end is closed.
  • the anterior end of a tube in formation is also closed by a weld 115.
  • the machine can use a heat shrinkable polyethylene film 35 to 100 microns thick, preferably 55 microns, or a composite film of polyethylene and polyester 19 to 35 microns thick. preferably 25 microns thick.
  • the means of displacement of the loading plate 44, during its withdrawal stroke, and the jack 51, the rod of which carrying the plunger 46 forms a piston are selectively actuated so as to operate according to the kinematics described above. .
  • the machine 10 may include a set of sensors arranged on the frame 18 to identify at any time the position of the plate 44 and of the pusher 46 and of the appropriate control means of the means for moving the plate 44 and of the piston 51.
  • the machine can also use a film of cold-shrinkable packaging material.
  • the cheeks and the retractable stop are not used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP96401366A 1996-06-20 1996-06-20 Maschine zum Verpacken von Gruppen von Gegenständen Withdrawn EP0814022A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96401366A EP0814022A1 (de) 1996-06-20 1996-06-20 Maschine zum Verpacken von Gruppen von Gegenständen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96401366A EP0814022A1 (de) 1996-06-20 1996-06-20 Maschine zum Verpacken von Gruppen von Gegenständen

Publications (1)

Publication Number Publication Date
EP0814022A1 true EP0814022A1 (de) 1997-12-29

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EP96401366A Withdrawn EP0814022A1 (de) 1996-06-20 1996-06-20 Maschine zum Verpacken von Gruppen von Gegenständen

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EP (1) EP0814022A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20090501A1 (it) * 2009-07-29 2011-01-30 Sotemapack S R L Apparato e metodo per l'imballaggio di prodotti.
CN107405575A (zh) * 2014-12-23 2017-11-28 纤维膜制造科技有限两合公司 用于制造线束的装置和方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH463369A (de) * 1965-09-08 1968-09-30 Tabak & Ind Masch Einrichtung zum Längsverschliessen eines Packmittelschlauches aus schweiss- oder siegelfähigem Packmittel
US4924659A (en) * 1988-07-19 1990-05-15 International Sankoh Kabushiki Kaisha Sealing height adjusting device for package wrapping apparatus
GB2237008A (en) * 1989-10-13 1991-04-24 Final Packaging Ltd Dancer rollers
DE4106899C1 (en) * 1991-03-05 1992-07-30 Rudolf Dipl.-Ing. Wehinger (Fh), 7449 Neckartenzlingen, De Horizontal plastics bag making and filling machine - has shovel-shaped goods thruster with inner stripper movable w.r.t. thruster
FR2728233A1 (fr) * 1994-12-19 1996-06-21 Perot Robert Machine d'emballage de lots de produits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH463369A (de) * 1965-09-08 1968-09-30 Tabak & Ind Masch Einrichtung zum Längsverschliessen eines Packmittelschlauches aus schweiss- oder siegelfähigem Packmittel
US4924659A (en) * 1988-07-19 1990-05-15 International Sankoh Kabushiki Kaisha Sealing height adjusting device for package wrapping apparatus
GB2237008A (en) * 1989-10-13 1991-04-24 Final Packaging Ltd Dancer rollers
DE4106899C1 (en) * 1991-03-05 1992-07-30 Rudolf Dipl.-Ing. Wehinger (Fh), 7449 Neckartenzlingen, De Horizontal plastics bag making and filling machine - has shovel-shaped goods thruster with inner stripper movable w.r.t. thruster
FR2728233A1 (fr) * 1994-12-19 1996-06-21 Perot Robert Machine d'emballage de lots de produits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20090501A1 (it) * 2009-07-29 2011-01-30 Sotemapack S R L Apparato e metodo per l'imballaggio di prodotti.
CN107405575A (zh) * 2014-12-23 2017-11-28 纤维膜制造科技有限两合公司 用于制造线束的装置和方法

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