EP0681957A1 - Procédé et dispositif pour envelopper des parallélépipèdes, en particulier des balles en matière isolante avec du matériel à envelopper - Google Patents

Procédé et dispositif pour envelopper des parallélépipèdes, en particulier des balles en matière isolante avec du matériel à envelopper Download PDF

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Publication number
EP0681957A1
EP0681957A1 EP95104388A EP95104388A EP0681957A1 EP 0681957 A1 EP0681957 A1 EP 0681957A1 EP 95104388 A EP95104388 A EP 95104388A EP 95104388 A EP95104388 A EP 95104388A EP 0681957 A1 EP0681957 A1 EP 0681957A1
Authority
EP
European Patent Office
Prior art keywords
web
cuboid
gap
moved
wrapping
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.)
Granted
Application number
EP95104388A
Other languages
German (de)
English (en)
Other versions
EP0681957B1 (fr
Inventor
Bo Wigfors
Per Ake Krister Lundgren
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.)
Lamb AG
Original Assignee
Lamb AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lamb AG filed Critical Lamb AG
Publication of EP0681957A1 publication Critical patent/EP0681957A1/fr
Application granted granted Critical
Publication of EP0681957B1 publication Critical patent/EP0681957B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 3.
  • Such a method and such a device are known from DE 12 99 548 A1 and DE 24 50 373 A1.
  • Each working cycle begins with the lower end of a film web fed vertically from top to bottom being clamped in the pliers before a cuboid to be wrapped is pressed against the film web. As the cuboid moves further, its underside slides over the film web and this is pulled over the front and over the top of the cuboid from above.
  • a drawing beam or driver which is located above the cuboid and guides the film web, is lowered behind the cuboid through the gap, taking the film web with it so that it covers the back of the cuboid and finally overlaps below it with the first end of the film web still held in the pliers, welded to it and then separated by means of the fly knife.
  • the lower end of the film web that comes free from this is temporarily clamped between the driver and a pressure strip, then guided further down and held by the pliers.
  • the driver then returns to its upper end position and clears the way for the next cuboid to be encased.
  • the film used in this known way for enveloping cuboids is made of plastic such as PVC or PE and is therefore sufficiently smooth and tear-resistant to slide over the underside, front and top of each cuboid in the manner described, the relative speed between the film and Cuboid on the underside and front of it is just as large, but on the top is twice as large as the speed of movement of the cuboid.
  • the resulting frictional resistance can only be controlled if the cuboid itself is smooth, as is the film. Regardless of this, only those foils can be used which form a sufficiently firm but not protruding weld seam along the edge formed between the underside and the back of the cuboid.
  • the known method and device described are not suitable for wrapping cuboids with rougher, less tear-resistant web material, such as packaging paper, which cannot be welded in a narrow seam.
  • a device for wrapping cuboids which has three conveying tunnels arranged one behind the other and to be traversed by the cuboids.
  • the first conveyor tunnel has a transverse gap through which a sheet of wrapping material is fed from above such that its lower end is located below a base plate of the tunnel, and its upper end, which is released when the sheet is cut, is arranged above a cover plate of the tunnel.
  • a cuboid to be encased is moved forward in the first conveyor tunnel, so that it lies against the web section with its front side and takes it along, so that it forms legs which also lie on the underside and on the top side of the cuboid and protrude to the rear .
  • the cover plate and the base plate have gaps through which a driver of an endless upper conveyor plunges into the second conveyor tunnel from above and thereby presses the upper overhang of the web against the back, and then similarly one with a lower endless Carrier revolving driver engages from below in the second conveyor tunnel and also presses the lower overhang of the web against the back of the cuboid.
  • the cuboid is first pushed forward by the driver of the upper conveyor and then by the driver of the lower conveyor. In order for the latter to reach the cuboid, the lower conveyor must be driven at high speeds at times.
  • This known device can also be used to wrap cuboids that are not particularly smooth, and it is also not possible to use particularly tear-resistant wrapping material, for example wrapping paper; the device is complex and takes up a lot of space.
  • a further device for wrapping bales is known from the brochure "Wrapper Applying Machine Type ERA" from Sunds Defibrator AB, S-85194 Sundsvall, Sweden (printer's note E-06/85).
  • the two conveyor lines are arranged at right angles to a main conveyor which conveys cuboids formed by bales of insulating material.
  • the first conveyor line can be raised and lowered in order to take over a cuboid from the main conveyor for each machine cycle and to convey it in the direction of the second conveyor line.
  • the second conveyor line is adjustable as a whole towards and away from the first conveyor line, and the direction of delivery of both conveyor lines is reversible.
  • Paper serving as wrapping material is drawn off a roll and conveyed below the second conveying path into an area below the gap formed between the two conveying paths.
  • the machine has a pair of stands arranged laterally next to the gap, in which a driver designed as a winding roller is mounted and guided up and down.
  • the driver of the known device dives down through the wide open gap, grips the end of the web held there, winds a web section and returns to its upper end position. The web is then separated below the gap so that it hangs loosely downward through the gap from the driver.
  • the second conveyor section approaches the first one to take over the cuboid that is being moved by it. Its front side abuts the vertically hanging web section, which is gradually unwound by the driver as the cuboid moves. As soon as the cuboid has passed the gap, it will again reach the end of the web previously held by the gripper at the bottom of the cuboid and overlap with the opposite end of the web.
  • the invention is based on the object of designing a method and a device for wrapping cuboids, in particular insulating bales, with a web of wrapping material, in particular paper, in such a way that, given the dimensions of the cuboids, shorter processing times can be achieved and the outlay on the device is reduced.
  • cuboids 1 approximately cuboid insulating bales, hereinafter referred to as cuboids 1 for short, are wrapped with a web 2 of wrapping paper.
  • the height of the cuboids 1 is greater than their width.
  • the web 2 is first placed on the front 3, then on the top 4 and the bottom 5 and finally on the back 6 of a cuboid 1, the web ends forming an overlap 7 on the back 6 and being glued to one another there.
  • the web 2 is preferably so much wider than the top and bottom 4 and 5 of the cuboid 1 that lateral protrusions arise, which are then folded over to cover the long sides 8 of the cuboid.
  • the cuboids 1 are conveyed through the device shown in the direction of arrow 9 in FIG.
  • the device has a frame 10 which forms a tunnel.
  • a conveyor line 11 leads to this, on each of which a cuboid 1 is moved by a slide 12 in the direction of arrow 9.
  • the slide 12 works intermittently; it is withdrawn from its front position, indicated by dashed lines in FIG. 1, into the rest position drawn with solid lines.
  • a second conveyor section 13 connects to the first conveyor section 11, with an intermediate between these two conveyor sections with respect to their direction of conveyance (arrow 9) transverse gap 14 remains free.
  • Barriers 15 are arranged on both sides of the second conveyor section 13, one cuboid 1 of which is stopped before it is taken along the second conveyor section 13.
  • the second conveyor section 13 is followed by a third conveyor section 17, on the two sides of which flaps 18 are provided for bending the above-mentioned lateral overhangs of the web 2.
  • the flaps 18 are each attached to a transverse slide 19, so that the distance between opposing flaps 18 can be adjusted to adapt to cuboids 1 of different widths.
  • a horizontal pressure plate 20 is arranged above the second conveyor section 13, which is suspended from the frame 10 by means of scissors arrangement 21 and can be adjusted parallel to itself by means of an actuator 22 in order to adapt to different heights of the cuboids 1.
  • the web 2 either runs over a deflection roller 26 on one of the bearing blocks 24 or directly upwards to a first portal 27 via a second deflection roller 28 mounted there, through a frame-shaped dancer 29 also mounted on this portal 27 and via a third one mounted on it Deflection roller 30.
  • the dancer 29 is connected to the first portal 27 by an adjustable actuating drive 31, which makes it possible to maintain a preselected tension in the path 2.
  • From the third Deflection roller 30, the web 2 extends upwards again to a second portal 32 and around a deflection 33 arranged there, which can also be a deflection roller.
  • a drive roller 34 is arranged vertically below this deflection 33 and, together with a second drive roller 35, forms a nip through which the web 2 is guided vertically downwards. All deflection rollers and drive rollers have horizontal axes which are 9 transverse with respect to the conveying direction.
  • the nip between the drive rollers 34 and 35 is perpendicular to the nip 14 between the two conveyor lines 11 and 13.
  • a transverse rail 36 along which an adhesive application and separating device 37 can be moved.
  • the driver 38 is a horizontal tube which is transverse to the conveying direction 9, that is to say parallel extends to the deflection 33 and the drive rollers 34 and 35, has a perforated lateral surface and can be evacuated intermittently, as a result of which the web 2 can be sucked onto the driver 38 and can be carried by it.
  • the driver 38 forms the lower edge of a skid-like curved web guide 39 which is connected to a link 41 by a joint 40 arranged in its upper third with a horizontal joint axis A which is transverse with respect to the conveying direction 9.
  • This is supported on the pressure plate 20 by a hinge 42 with a likewise horizontal hinge axis B which is transverse with respect to the conveying direction 9.
  • the handlebar 41 is designed like a frame and has a bearing point 43 approximately in its center, which is connected by an actuator 44 to an upper end region of the web guide 39 and by a further actuator 45 to the pressure plate 20.
  • a downward channel 46 which is curved in the shape of an arc towards the front in the conveying direction 9, extends over the entire width of the gap 14 and gradually narrows towards the front.
  • the channel 46 is arranged on a traverse 47 which delimits the gap 14 towards the front.
  • a flap 48 is mounted on the cross member 47 by means of a joint 49 with a horizontal, transverse axis C.
  • the flap 48 is connected to the frame 10 by an actuator 50; as a result, it can be pivoted from a rest position, in which it lies in the plane of the second conveyor section 13, into a pressing position, in which it projects vertically upwards from the joint 49.
  • the slide 12 When the state shown in FIG. 9 is reached, the slide 12 is moved to the left so that it moves the cuboid 1 forward pushes. As a result, its front side 3 presses against the vertically hanging section of the web 2, which first lies against the front side 3 and then against the upper side 4 and at the same time against the lower side 5 of the cuboid 1, while the latter is pushed over the gap 14 according to FIG. 10 becomes.
  • the lower section of the web 2 slides over the horizontal flap 48, which exerts a certain frictional resistance on the web.
  • the drive rollers 34 and 35 are ineffective during the forward movement of the cuboid 1 shown in FIG. 10; however, the rocker 2 has a braking effect on the web 2. As a result, the web 2 is pulled taut over the top 4 and over the bottom 5.
  • the pressure plate 20 is lowered according to FIG. 11, so that it clamps the cuboid 1. Then the slide 12 is withdrawn and immediately thereafter the flap 48 is pivoted upward so that it places the end of the web 2 against the rear side 6 of the cuboid 1. At the same time, the driver is moved downwards according to FIG. 11, but without being placed under vacuum. As a result, the driver 38 slides over the web 2 and places it from top to bottom on the rear side 6 of the cuboid 1, while this is still clamped by the downward force exerted on it by the pressure plate 20.
  • the web 2 is severed by the device 37 after it has been coated or sprayed with adhesive immediately below the separation point.
  • the web section wrapped around the cuboid 1 now has two ends which are brought into an overlapping position according to FIG. 12 by the driver 38 and glued to one another.
  • the pressure plate 20 is then moved upwards again, so that it releases the cuboid 1 and the latter is moved further by the belt conveyors 15 along the second conveying path 13.
  • the driver 38 is moved upward and the flap 48 is moved downward into the rest position according to FIG. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Collation Of Sheets And Webs (AREA)
EP95104388A 1994-05-10 1995-03-24 Procédé et dispositif pour envelopper des parallélépipèdes, en particulier des balles en matière isolante avec du matériel à envelopper Expired - Lifetime EP0681957B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4416540A DE4416540C1 (de) 1994-05-10 1994-05-10 Verfahren und Vorrichtung zum Umwickeln von Quadern, insbesondere Isolierstoffballen, mit Einwickelmaterial
DE4416540 1994-05-10

Publications (2)

Publication Number Publication Date
EP0681957A1 true EP0681957A1 (fr) 1995-11-15
EP0681957B1 EP0681957B1 (fr) 1998-06-03

Family

ID=6517813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104388A Expired - Lifetime EP0681957B1 (fr) 1994-05-10 1995-03-24 Procédé et dispositif pour envelopper des parallélépipèdes, en particulier des balles en matière isolante avec du matériel à envelopper

Country Status (2)

Country Link
EP (1) EP0681957B1 (fr)
DE (2) DE4416540C1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29515605U1 (de) * 1995-09-30 1995-12-14 Colsman & Kirschner GmbH & Co KG, 45277 Essen Verpackungsautomat mit automatischem Wechsel des Verpackungsmaterials
IT1320919B1 (it) * 2000-03-14 2003-12-10 Resta Srl Macchina confezionatrice di materassi in un foglio svolto in continuoda una bobina.
FR2815012B3 (fr) * 2000-10-05 2002-09-13 Smurfit Socar Sa Procede de regroupement de conditionnements parallelepipediques identiques sur un systeme de convoyafe en continu
CN116461767B (zh) * 2023-06-05 2023-10-03 山东大宏智能设备股份有限公司 一种垃圾自动六面包装设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238697A (en) * 1962-10-26 1966-03-08 Gen Strapping Company Bundle wrapping apparatus
US3372526A (en) * 1965-01-22 1968-03-12 Scandia Packaging Mach Wrapping mechanism
GB2160843A (en) * 1984-05-30 1986-01-02 Ouest Conditionnement J Delapi Wrapping parcels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170859B (de) * 1961-03-07 1964-05-21 Hesser Ag Maschf Vorrichtung an Einwickelmaschinen zum Umlegen von Einwicklerzuschnitten um blockfoermige Gegenstaende
DE1299548B (de) * 1966-04-16 1969-07-17 Bauer Eberhard Maschine zum Umhuellen von Gegenstaenden mit Kunststoff-Folie
DE2450373A1 (de) * 1974-10-23 1976-04-29 Bauer Eberhard Maschine zum umhuellen von gegenstaenden mit kunststoff-folie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238697A (en) * 1962-10-26 1966-03-08 Gen Strapping Company Bundle wrapping apparatus
US3372526A (en) * 1965-01-22 1968-03-12 Scandia Packaging Mach Wrapping mechanism
GB2160843A (en) * 1984-05-30 1986-01-02 Ouest Conditionnement J Delapi Wrapping parcels

Also Published As

Publication number Publication date
DE4416540C1 (de) 1995-08-17
DE59502388D1 (de) 1998-07-09
EP0681957B1 (fr) 1998-06-03

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