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
  • B65B69/00—Unpacking of articles or materials, not otherwise provided for
  • B65B69/0025—Removing or cutting binding material, e.g. straps or bands

Definitions

• the invention relates to a device for cutting strapping of parallelepiped bales by means of a plurality of bale-movable cutter bar, wherein the bales are guided by a conveyor into the working range of the cutter bar.
• bales for processing whereby the weight of the bales can be between 100 and 1500 kg.
• the bales are generally tied with strapping made of metal, plastic or other materials.
• the cutting and, if possible, the removal of the strapping are also essential.
• press a knife bar as described for example in WO 92/13768 A1, on the bale and so separate the strapping.
• the delivery of the bales is usually interrupted for a short time.
• FR 2 956 857 A3, DE 3 731 653 A1 and US Pat. No. 5,375,316 also disclose dividing devices with circular knives, the use of which however is susceptible to interference, expensive and / or not efficient.
• the object of the invention is therefore to ensure the efficient cutting of all strapping of the bales. According to the invention this object is achieved in that the conveyor of at least two under the bale side by side moving conveyor belts is formed and at least between two adjacent conveyor belts a rotating circular knife is arranged transversely to the conveying direction of rotation axis, which partially beyond the conveyor belts and so into the bale protrudes.
• the conveyor belts ensure a safe transport of the bales without the risk of deterioration of the circular blade by falling parts of the bale or the strapping.
• At least one cutter bar is movable to the top of the bale and thus allows safe working of the circular blade and the other cutter bar. While the upper cutter bar, which extends generally transversely to the conveying direction of the bales, separates the strapping lying in the conveying direction of the upper side of the bale, the circular blade takes over the strapping on the underside of the bale lying transversely to the conveying direction.
• the device should have at least three cutterbars whose working area is on adjacent sides of the bales. This may be necessary in particular if one side of the bale is very hard and / or the bale material on one side swells too much between the strapping and so the accessibility to the strapping is restricted.
• this can be advantageous if several, in particular two bales are to be fed side by side transversely to the conveying direction and simultaneously processed. With the simultaneous supply of several bales, a plurality of rotating circular knives can then be provided next to one another in a transverse direction to the conveying direction. It suffice, for example, three conveyor belts to arrange two circular blades between each two conveyor belts.
• At least one cutter bar is preferably pivotable to the side pointing in the conveying direction of the bale. Furthermore, it can be dispensed with a stopping of the conveyor during cutting, when at least one cutter bar is guided during contact with the bales in a traversing device in the conveying direction.
• This movement in the conveying direction can be done without drive by adhesion to the bale or driven.
• the respective cutter bar should preferably be moved during the entire contact with the, but especially during the strong contact with the bale with this.
• the traversing device in the conveying direction has the same speed as the conveyor.
• the cutting operation may possibly also be assisted by a slight relative movement between the cutter bar and the bale.
• the cutter bar is moved away from the bale and the traversing device is moved back to the starting position with the cutter bar.
• the cutter bar For performing the actual cutting operation when pressing the cutter bar against the bale, the cutter bar should have at least one bale facing the bale.
• differently shaped cutting devices may be attached to the cutter bar.
• Particular advantages arise when using the device according to the invention, when the bales of plastic, textile, pulp or waste paper bales are formed with preferably all-round circumferential strapping.
• FIG. 1 is a perspective view of a cutting device
• Figure 2 another perspective view of this cutting device
• Figure 3 a side view of the cutting device.
• the cuboid bales 1 a, 1 b, 1 c, 1 d, 1 e, 1 f, 1 g which consist for example of waste paper, are transported by a conveyor belt 10 to the cutting device and conveyed there by a conveyor 7 into the working area of a plurality of cutter bars 3,4,5 6 and a circular blade 8 of the cutting device.
• the bales 1 a, 1 b, 1 c, 1 d, 1 e, 1 f, 1 g may have different layers of strapping 2.
• a downstream processing unit e.g. a pulper.
• the conveyor 7 of the cutting device is formed by two in the conveying direction 9 parallel juxtaposed conveyor belts.
• the partially projecting beyond the conveyor belts circular knife 8 is arranged, which has a transverse to the conveying direction 9 rotation axis.
• the conveyor 7 moves the bales 1 a, 1 b, 1 c, 1 d, 1 e, 1 f, 1 g on this circular blade 8 away, resulting in the separation of the transverse to the conveying direction 9 strapping 2 on the underside of the bale 1 a, 1 b, 1 c, 1 d, 1 e, 1f, 1 g leads.
• strapping 2 can be separated with the cutting device when a horizontal cutter bar 3 is laterally adjacent to the conveying direction 9 over the bale 1 a, 1 b, 1 c, 1 d, 1 e, 1 f, 1 g and another vertical cutter bar 4. While the upper cutter bar 3 is pressed down on the bales 1a, 1b, 1c, 1d, 1e, 1f, 1g for cutting, the side cutter bar 3 is pressed against the corresponding side of the bale 1a, 1b, 1c, 1d, 1e, 1f , 1g pressed.
• the upper cutter bar 3 presses the bales 1a, 1b, 1c, 1d, 1e, 1f, 1g against the lower conveyor 7, which contributes to the position stabilization of the bale 1a, 1b, 1c, 1d, 1e, 1f, 1g.
• the conveyor 7 can also be operated continuously, the upper cutter bar 3 and the lateral cutter bar 4 during the separation, ie moved during the pressing of a traversing device continuously synchronously with the conveyor 7. After cutting, the traversing device brings the cutter bar 3,4 back to its original position.
• the cutting device still has a third, vertical cutter bar 5,6.
• the cutter bar 5 can either linearly against the conveying direction 9 to bale 1 a, 1 b, 1 c, 1 d, 1 e, 1f, 1 g moves or as a cutter bar 6 to this side of the bale 1 a, 1 b, 1 c , 1 d, 1 e, 1f, 1 g are pivoted.
• the pivoting of the cutter bar 6 is usually preferable because the cutter bar 6 so faster bale 1 a, 1 b, 1 c, 1 d, 1 e, 1f, 1 g can be moved, which increases the bile throughput.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Basic Packing Technique (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=58669798

Family Applications (1)

Country Status (4)

Families Citing this family (6)

Family Cites Families (10)

• 2016
  • 2016-08-15 DE DE102016215133.9A patent/DE102016215133A1/de not_active Withdrawn
• 2017
  • 2017-05-04 WO PCT/EP2017/060611 patent/WO2018033257A1/de unknown
  • 2017-05-04 CN CN201780048827.1A patent/CN109562855A/zh active Pending
  • 2017-05-04 EP EP17721377.4A patent/EP3497020A1/de not_active Withdrawn

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