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
  • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
  • B65B9/026—Enclosing successive articles, or quantities of material between opposed webs the webs forming a curtain
• • 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
  • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
  • B65B27/08—Bundling paper sheets, envelopes, bags, newspapers, or other thin flat articles

Definitions

• the invention relates to a device for automatically bundling sheet material according to the preamble of claim 1.
• the paper sheet stack is then fed via a separate transport path to a device which brings the two film ends together and connects them to one another.
• a device which brings the two film ends together and connects them to one another.
• the dimensions of the known packaging device are relatively large.
• the known packaging device does not offer sufficient flexibility when processing stacks of sheet material that have different heights, since the distance between the conveyor belts and thus the maximum stack height between the conveyor belts is fixed.
• the invention is therefore based on the abe to propose a device of the type mentioned, which is designed to save space and offers high flexibility in bundling different stack formats. This object is achieved by the features specified in the characterizing part of claim 1.
• the sheet material to be bundled is preferably clamped as a stack between two conveyor belts arranged parallel to one another, the distance between the conveyor belts being adaptable to the respective stack format by an automatic height adjustment of the conveyor belts.
• This makes it possible to compensate for differences in the stack height which are caused, for example, by quality differences in the sheet material.
• the stack height can vary considerably with the same number of banknotes to be bundled.
• the clamping of the sheet material stack between the conveyor belts enables exact positioning of the sheet material while it is being banded. The fact that the conveyor belts on the one hand to fix the bundled
• the sheet material to be bundled is placed on top of one another on a height-adjustable lifting table and pressed against an oppositely arranged plate until a defined pressing force is reached.
• the sheet material can also be deposited on the lifting table as a stack with a certain desired height, without the sheet material being compressed with a previously defined pressing force.
• the stack of sheets is then drawn in by the conveyor belts, the height Position with the help of a proximity switch adjusts the distance between the conveyor belts so that a stepless channel is created between the lifting table and a conveyor belt. Because the length of the toothed belt for driving the conveyor belts is not changed by the height adjustment, this can take place during operation of the conveyor belts without operator intervention.
• the height adjustment of the conveyor belts and also of the lifting table thus enables different sheet material formats to be processed, which differ in particular with regard to their stacking height. Different film widths can also be used to bundle the sheet material and the film position can also be adjusted.
• Fig. 5 is a side view of the welding bar of the banding device.
• 1 shows a schematic side view of the device for bundling sheet material.
• the bundling of the sheet material is described below, for example, with the aid of banknotes 10, which, as loose sheet material, are stored one above the other on a height-adjustable lifting table 20.
• the banknotes can also be fed to the lifting table in the form of individual banded packets that lie one above the other in a fit manner.
• the lifting table 20 Opposite the lifting table 20 is a plate 22, which is shown here in the pressing position.
• the plate 22 is designed to be displaceable and can be moved out of the plane of the lifting table 20 from the pressing position shown here, so that the lifting table 20 can be loaded with the banknotes from above.
• the lifting table 20 moves in the direction of the plate 22, as a result of which the stack of banknotes is compressed.
• the lifting table 20 is connected to a pneumatic cylinder, not shown here, which is spring-mounted.
• a pneumatic cylinder not shown here
• a film 40 is fed via the guide elements 31, 33 from the film rolls 30 and 32 in endless form in a plane running parallel to the front edge of the banknote stack 10.
• the guide elements 31 and 33 are displaceable, whereby an adjustment of the film layer is possible.
• films with a width of z. B. 75 to 106 mm can be used.
• two conveyor belts 50 and 60 are arranged parallel to each other.
• the conveyor belts 50 and 60 are guided over the deflection rollers 51 and 52 or 61 and 62.
• the conveyor belts 50 and 60 are driven synchronously, but the drive is not shown here.
• the distance between the lower conveyor belt 60 and the upper conveyor belt 50 can be adjusted by means of a spindle (not shown) to compensate for height differences in the stack of banknotes.
• a spindle (not shown) to compensate for height differences in the stack of banknotes.
• the lower conveyor belt 60 is positioned so that a stepless channel is created between the lifting table 20 and the conveyor belt 60. This is done automatically with the help of a proximity switch, not shown here.
• the upper conveyor belt 50 and the lower conveyor belt 60 rest on a spring-loaded roller bed 53 and 63, respectively, so that the stack of sheets can be transported in the clamped state. Even small differences in the thickness of the stack are compensated for, which ensures safe transport.
• the conveyor belts 50, 60 can transport the bundled stack of banknotes to an optional transfer compartment 70.
• the transfer compartment 70 is, for. B. rotatable about the axes of rotation Dl and D2.
• the bundling device can be completely emptied due to the active transport using the conveyor belts 50, 60.
• the transport plane is shown for example so that it runs horizontally. Of course, this can also run obliquely, but the stack of banknotes is always fed perpendicular to the transport plane.
• Position 81 here designates the drive pulley for the toothed belt 88, which via the deflection rollers 82 onto a roller 83 of the upper conveyor belt and a roller 85 of the lower conveyor belt and is guided on an eccentric tensioning roller 84.
• Positions 86 and 87 each show a gear wheel for driving the lower conveyor belt 60, which synchronously with the upper conveyor belt 50 is driven.
• the lower conveyor belt 60 is adjustable in height, but the toothed belt length is not changed. This allows height adjustment during operation of the conveyor belts without operator intervention.
• 3 shows the function of the transfer compartment 70 as a block diagram.
• a geared motor 71 with, for example, a reduction ratio of approximately 1: 350 drives a bevel gear pair 73, 74 arranged on a shaft 72.
• the drive path of the motor is transmitted from the pair of bevel gears 73, 74 to a swivel arm 75.
• the banknote stack is placed on the banknote side edges.
• the motor 71 rotates the swivel arm 75 about the second axis of rotation D2.
• a gas pressure spring 78 is connected to the swivel arm 75 via a linkage 77 and a lever 76.
• the rotary movements D1 and D2 take place sequentially, since the second rotary movement D2 is inhibited by the gas pressure spring 78 until the rotary movement D1 is completed.
• the second rotary movement D2 runs here as a relative movement of the bevel gears 73 and 74 against one another.
• the motor holds the swivel arm 75 until the banknote stack is unloaded.
• a microswitch not shown here, ensures the upper position of the transfer compartment.
• 4a-4f show the functional sequence of the device according to the invention.
• 4a shows how the sheet material 10 is pressed against the plate 22 by the lifting table 20.
• the lower conveyor belt 60 is then automatically adjusted so that a stepless channel between the lifting table and the lower conveyor belt. No operator intervention is required for this.
• FIG. 4b shows the pusher 21 as it transfers the stack of sheets 10 to the conveyor belts 50 and 60.
• the pusher 21 remains here briefly the welding bar 35 and the pressure stamp 34. Due to the movement carried out by the pusher 21, the stack of banknotes 10 hits the film 40 and is partially folded over with it. The stack of banknotes 10 is clamped between the conveyor belts 50 and 60 with the film 40 partially surrounding it. The rest of the stack of banknotes is then carried out by the conveyor belts until the stack of banknotes is located immediately after the welding bar 35 and the pressure stamp 34 arranged opposite, as shown in FIG. 4c.
• a light barrier not shown here, can be used, for example, to determine the correct reference position before the film 40 is brought together and connected.
• the pressure stamp 34 moves in the direction of the welding bar 35, whereby the film 40 is connected between the pressure stamp 34 and the welding bar 35 to form a band 41 and this is separated from the film, as shown in FIG. 4d .
• the bundled stack of banknotes 11 can be partially or completely surrounded by the band 41.
• FIG. 4e shows the bundled stack of banknotes 11 transported by the conveyor belts 50 and 60 to a transfer compartment 70.
• the transfer compartment here makes a first rotation about the axis of rotation D1, as a result of which the bundled stack of banknotes 11 is placed on the banknote side edges, as shown in FIG. 4f is shown.
• a second rotary movement about the axis of rotation D2 is initiated. This second rotary movement transfers the stack of banknotes 11 in parallel to a conveyor belt 90, as shown in FIG. 4g.
• the transfer compartment forms an inclined plane, as a result of which the stack of banknotes 11 slides onto the conveyor belt 90.
• the return movement of the transfer compartment takes place in reverse order and is not shown here.
• the detailed side view of the welding bar 35 shown in FIG. 5 shows a U-shaped design in cross section.
• the two legs each form hold-downs 36, between which the heatable bead wire 37 is arranged.
• the crimp wire 37 is fastened to a wire holder 38 which is guided in the direction of the pressure plunger 34 and is displaceably guided in the welding bar by the spring 39.
• the spring 39 presses the wire holder 38 against a stop, not shown, so that the beaded wire 37 protrudes a little by the hold-down 36.
• the beading wire 37 is first acted upon and, since the pressure force of the pressure stamp 34 is approximately four times the counterforce by the spring 38 , moved into the welding bar until the pressure stamp strikes the stationary hold-down 36 and the film 40 is clamped.
• the weld seam is always loaded with the constant force by the spring 39 and the film 40 is held on both sides of the weld seam by the hold-down device 36, whereby a high quality of the weld seam is achieved with simple means.

Landscapes

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

Applications Claiming Priority (3)

Publications (2)

Family

ID=7828852

Family Applications (1)

Country Status (10)

Families Citing this family (45)

Family Cites Families (15)

• 1997
  • 1997-05-07 DE DE19719239A patent/DE19719239A1/de not_active Withdrawn
• 1998
  • 1998-05-06 AT AT98924284T patent/ATE222199T1/de not_active IP Right Cessation
  • 1998-05-06 US US09/423,236 patent/US6318053B1/en not_active Expired - Lifetime
  • 1998-05-06 JP JP54773798A patent/JP4138893B2/ja not_active Expired - Fee Related
  • 1998-05-06 AU AU76530/98A patent/AU731321B2/en not_active Ceased
  • 1998-05-06 DE DE59805203T patent/DE59805203D1/de not_active Expired - Lifetime
  • 1998-05-06 RU RU99125554/13A patent/RU2192374C2/ru active
  • 1998-05-06 EP EP98924284A patent/EP1007411B1/fr not_active Expired - Lifetime
  • 1998-05-06 CN CN98806031A patent/CN1085169C/zh not_active Expired - Lifetime
  • 1998-05-06 CA CA002288930A patent/CA2288930A1/fr not_active Abandoned
  • 1998-05-06 WO PCT/EP1998/002672 patent/WO1998050272A2/fr not_active Ceased

Non-Patent Citations (1)

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