EP0395807A1 - Verfahren und Vorrichtung zum Verarbeiten von komprimierte Papierabfallblöcke festhaltenden Drähten - Google Patents

Verfahren und Vorrichtung zum Verarbeiten von komprimierte Papierabfallblöcke festhaltenden Drähten Download PDF

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Publication number
EP0395807A1
EP0395807A1 EP89304484A EP89304484A EP0395807A1 EP 0395807 A1 EP0395807 A1 EP 0395807A1 EP 89304484 A EP89304484 A EP 89304484A EP 89304484 A EP89304484 A EP 89304484A EP 0395807 A1 EP0395807 A1 EP 0395807A1
Authority
EP
European Patent Office
Prior art keywords
block
wire
compressed
wastepaper
compressed block
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
EP89304484A
Other languages
English (en)
French (fr)
Other versions
EP0395807B1 (de
Inventor
Toshiro Miyata
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.)
KONDO UNYU-KIKO Co Ltd
Kondo Unyu Kiko Co Ltd
Original Assignee
KONDO UNYU-KIKO Co Ltd
Kondo Unyu Kiko Co Ltd
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 KONDO UNYU-KIKO Co Ltd, Kondo Unyu Kiko Co Ltd filed Critical KONDO UNYU-KIKO Co Ltd
Priority to DE1989608391 priority Critical patent/DE68908391T2/de
Publication of EP0395807A1 publication Critical patent/EP0395807A1/de
Application granted granted Critical
Publication of EP0395807B1 publication Critical patent/EP0395807B1/de
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
    • 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 present invention relates to a method of and an apparatus for efficiently processing wires which fasten a compressed wastepaper block.
  • Wastepaper such as of newspapers, magazines, or the like which are collected by a wastepaper collector is com­pressed by a compressor into a rectangular block, which is then fastened by a plurality of wires and sent to a paper regenerating factory.
  • the compressed wastepaper block is loosened by a loosening machine. Prior to the loosening of the compressed wastepaper block, however, the fastening wires must be removed from the compressed wastepaper block.
  • the disclosed automatic wire cutting apparatus com­prises a tooth plate having an array of teeth with pointed ends, another tooth plate having teeth held in intimate con­tact with the first tooth plate and reciprocally movable longitudinally of the first tooth plate, and a presser mech­anism for pressing the tooth plates to force the tooth ends into a compressed wastepaper block for cutting off the wires around the wastepaper block. After the pointed tooth ends have been forced into the wastepaper block, the teeth of the tool plates are displaced in sliding engagement with each other to cut off the wires.
  • the tooth plates have to be forced into the wastepaper block before the wires are cut off or processed.
  • the wires are embedded in the wastepaper block at a considerably large depth, a substantial force must be applied to the tooth plate in order to push the tooth ends deeply into the wastepaper block.
  • the wires may not be cut off because the tooth ends are not driven deeply enough to reach the wires.
  • the wastepaper is also cut off, producing a large quantity of paper dust which makes the working environment bad.
  • Another object of the present invention is to pro­vide a method of and an apparatus for processing, i.e., cut­ting off, wires which fastens a compressed wastepaper block, by bending the compressed wastepaper block arcuately to ten­sion wire portions on a projecting side of the block in order to expose the wires partly on a surface of the block for allowing a cutter to cut off the wires smoothly, and also to simply process the wires that have been cut off.
  • a method of processing a wire fastening a compressed block of paper material com­prising the steps of: deforming the compressed block sub­stantially arcuately; gripping a portion of the wire which is exposed in a concave created by the deformed compressed block, with a presser/wire clamp; thereafter driving a cut­ter through a portion of the wire which is disposed over a convex side of the deformed compressed block which is oppo­site to the concave, to cut off the wire; and removing the wire that has been cut off from the compressed block.
  • an apparatus for processing a wire fastening a com­pressed block of paper material comprising: bending means for bending the compressed block on a working table substan­ tially arcuately; gripping means for gripping portions of the wires which are exposed in a concave created by the bent compressed block; cutting means for cutting off a portion of the wire which is disposed over a convex side of the bent compressed block which is opposite to the concave; feeding means for delivering out the wires cut off by the cutting means; and severing means for severing the wire delivered by the feeding means.
  • the bending means comprises a presser/­wire clamp disposed on one side of the working table for pressing the compressed block, and a bending guide plate for guiding the compressing block, the bending guide plate being disposed on an opposite side of the working table in con­fronting relation to the presser/wire clamp.
  • the gripping means comprises a rack disposed in the bending means and a pair of fingers movable by the rack through a pinion and a gear coupled respectively to the fingers, for gripping and releasing the wire. The wire can be gripped reliably by the fingers without fail.
  • the cutting means comprises a cutter movable toward and away from the compressed block by a hydraulic cylinder.
  • the feeding means comprises a fixed feed roller and a movable feed roller movable into coaction with the fixed feed roller.
  • the severing means comprises a fixed cutter blade and a movable cutter blade movable into coaction with the fixed cutter blade by a hydraulic cylinder.
  • Fig. 1 shows an apparatus for processing wires which fasten a compressed wastepaper block 1 that is in the form of a stack of sheets of wastepaper such as of newspapers, magazines, or the like, the compressed wastepa­per block 1 being tightly fastened by a plurality of wires 2 looped around the block 1.
  • the wire processing apparatus includes a working table 3 comprising a slat conveyor or the like for placing the compressed wastepaper block 1, a presser/wire clamp 4 disposed on one side of the working table 3 where the compressed wastepaper block 1 is to be bent, and a pair of hydraulic cylinders 5 connected respec­tively to the upper and lower ends of the presser/wire clamp 4.
  • the presser/wire clamp 4 When the piston rod of the hydraulic cylinders 5 are extended, the presser/wire clamp 4 is retracted away from the working table 3. When the piston rods are contracted, the presser/wire clamp 4 is moved toward the working table 3. While the hydraulic cylinders 5 are shown as being attached to the upper and lower ends, respectively, of the presser/wire clamp 4 in the illustrated embodiment, only one hydraulic cylinder may be coupled to a substantially central portion of the back surface of the presser/wire clamp 4 for moving the presser/wire clamp 4 back and forth.
  • the single hydraulic cylinder is advantageous in that it is not neces­sary to employ a control sequence which would otherwise operate the two hydraulic cylinders in timed relation, the amount of oil used is reduced, and the speed of operation is increased.
  • the presser/wire clamp 4 has a plurality of pairs of fingers 6A, 6B for gripping or clamping the wires 2.
  • the fingers 6A are mounted respec­tively on the shafts of pinions 7A, whereas the fingers 6B are mounted respectively on the shafts of gears 7B meshing with the corresponding pinions 7A.
  • the presser/wire clamp 4 also includes a rack 8 meshing with the pinions 7a and con­nected to a hydraulic clamp cylinder 9 in the presser/wire clamp 4.
  • the wire processing apparatus also includes a pair of erected bending guide plates 10 having respective tapered surfaces and disposed in confronting relation to the presser 4 across the working table 3. While the bending guide plates 10 are shown as being centrally separated from each other in the illustrated embodiment, they may be joined to each other at upper and lower portions thereof, with a central vertical slot left therebetween for entering a cutter (described later) therethrough.
  • the appa­ ratus further includes a cutter 11 disposed, as a means for cutting off wires, substantially centrally between the guide plates 10, a hydraulic cylinder 12 for moving the cutter 11 back and forth, and horizontal guide posts 13 for allowing the cutter 11 to move stably back and forth.
  • a fixed feed roller 14 is positioned near the presser/wire clamp 4 for processing the wires 2 that have been cut off.
  • a movable feed roller 15 coacts with the fixed feed roller 14.
  • the feed rollers 14, 15 have longitu­dinal teeth on their circumferential surfaces which can mesh with each other for processing the wires 2, as described later on.
  • the movable feed roller 15 can be moved by a hydraulic cylinder 16.
  • the movable feed roller 15 is guided for stable movement by horizontal guide posts 17.
  • a motor is disposed below the fixed feed roller 14 and has its output shaft coupled to the lower end of the fixed feed roller 14 for rotating the feed roller 14 about its own axis.
  • the feed rollers 14, 15 are vertically elongate and disposed in horizontally confronting relation to each other. However, relatively short feed rollers may be disposed in vertically confronting relation to each other.
  • a fixed cutter blade 18 is securely positioned near the feed rollers 14, 15.
  • a movable cutter blade 19 is mova­bly located near the fixed cutter blade 18, the movable cut­ter blade 19 being movable toward and away from the fixed cutter blade 18 by means of a hydraulic cylinder 20 while being guided by guide posts 21.
  • the guide plates 10 are fixed and have tapered surfaces.
  • actuators such as hydraulic cylinders may be disposed behind and cou­pled to these guide plates for tilting opposite wings of the guide plates toward the working table 3.
  • a pair of hydraulic cylinders may be connected to the back surfaces of the guide plates 10 to move the guide plates 10 back and forth, so that the guide plates 10 can be moved toward the presser/wire clamp 4 by the hydraulic cylinders to reduce the distance to be traversed by the presser/wire clamp 4.
  • the presser/wire clamp 4 and the guide plates 10 confronting the presser/wire clamp 4 jointly serve as a bending means for bending the compressed wastepaper block 1.
  • the rack 8 and the fingers 6A, 6B jointly constitute a clamping means for clamping the wires 2.
  • the cutter 11 actuatable by the hydraulic cylinder 12 serves as the cutting means for cutting off the wires 2.
  • the fixed feed roller 14 and the movable feed roller 15 jointly serve as a feeding means for feeding the wires 2.
  • the fixed cutter blade 18 and the movable cutter blade 19 jointly serve as a severing means for severing the wires 2 that have been cut off by the cutter 11 and delivered by the feeding means.
  • the compressed wastepaper block 1 is placed on the working table 3 such that the direction in which the paper layers of the compressed wastepaper block 1 are stacked extends transversely across the working table 3.
  • a limit switch not shown
  • the hydraulic cylinder 5 is operated to move the presser/wire clamp 4 in the direction indicated by the arrow in Fig. 5.
  • the distal end of the presser/wire clamp 4 is then brought into contact with a substantially central area of one side of the com­pressed wastepaper block 1.
  • the wires 2 which have been embedded in the compressed wastepaper block 1 are brought out and exposed on a concave 22 created by the compressed wastepaper block 1 (Fig. 6). Since the presser/wire clamp 4 is positioned substantially centrally in the concave 22, the tensioned wires 2 which have been exposed are held against the distal end of the presser/wire clamp 4.
  • the presser/wire clamp 4 is retracted away from the compressed wastepaper block 1 as shown in Fig. 6.
  • the tensioned wires 2 are also separated fully from the com­pressed wastepaper block 1.
  • the clamp cylin­der 9 of the presser/wire clamp 4 is operated to enable the pairs of clamps 6A, 6B to grip or clamp the wires 2 (Fig. 6).
  • the presser/wire clamp 4 is further retracted away from the compressed waste­paper block 1 to tension the portions of the wires 2 which are positioned on a convex or projecting side 23 of the com­pressed wastepaper block 1 near the guide plates 10 (see Fig. 7). Because the compressed wastepaper block 1 is con­siderably heavy and the direction in which the sheet layers thereof extends transversely across the working table 3, the bent compressed wastepaper block 1 will not return to its original shape even when the compressed wastepaper block 1 is released of the pressure from the presser/wire clamp 4.
  • the hydraulic cylinder 12 is actuated to thrust the cutter 11 substantially centrally into the pro­ jecting side 23 of the compressed wastepaper block 1 (Fig. 8). More specifically, the presser/wire clamp 4 which grips the wires 2 is retracted and then stopped in the position of Fig. 7 as electrically detected by a sensor (not shown), after which the hydraulic cylinder 12 is operated to drive the cutter 11 substantially centrally into the convex side of the compressed wastepaper block 1. At this time, the wires 2 are reliably severed by the cutter 11 since the wires 2 on the convex side 23 are held under considerable tension.
  • the piston rod of the hydraulic cylinder 12 is retracted, and the presser/wire clamp 4 is retracted to a position behind the feed rollers 14, 15 for withdrawing the wires 2 from the compressed wastepaper block 1 (Fig. 9).
  • the movable feed roller 15 is moved toward the fixed feed roller 14 by the hydraulic cylinder 16 until their teeth mesh with each other with the wires 2 interposed therebetween.
  • the movable cutter blade 19 is moved toward the fixed cutter blade 18 by the hydraulic cylinder 20 to cut off the wires 2 (Fig. 10).
  • the feed rollers 14, 15 are then rotated to deliver out the wires 2 by a predetermined length, and then the cutter blades 18, 19 coact to cut off the wires 2 again.
  • the wires 2 are cut off or processed in this manner by repeating the alternate operation of the rollers 14, 15 and the cutter blades 18, 19 (Fig. 11).
  • the wires embedded deeply in the compressed wastepaper block are partly exposed by bending the compressed wastepaper block arcuately so that the exposed wires can easily be clamped.
  • the wires on the convex side of the bent compressed wastepaper block are tensioned so that the tensioned wires can reliably be cut off.
  • the severed wires are smoothly delivered out by the feeding means, and then cut off to predetermined dimensions by the cutting means.
  • the above steps of operation are automatically successively effected according to a predetermined schedule. While the wire processing apparatus of the present invention is shown and described as being used for processing or cutting off wires fastening a compressed wastepaper block, it may also be used for processing or cutting off wires fastening a com­pressed pulp block. Therefore, the scope of the present invention should be interpreted as including the processing of wires fastening such a compressed pulp block.
  • the compressed wastepaper block when cutting off the wires, the compressed wastepaper block is not cut off, and hence the amount of produced paper dust is minimized and the working environment is not impaired.
  • the wires on the convex side of the compressed wastepaper block can reliably and easily be cut off by the cutter because they are tensioned at the time they are severed. Therefore, undesirable wire cutting failures are prevented from occurring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP89304484A 1989-05-03 1989-05-04 Verfahren und Vorrichtung zum Verarbeiten von komprimierte Papierabfallblöcke festhaltenden Drähten Expired - Lifetime EP0395807B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1989608391 DE68908391T2 (de) 1989-05-04 1989-05-04 Verfahren und Vorrichtung zum Verarbeiten von komprimierte Papierabfallblöcke festhaltenden Drähten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34673989A 1989-05-03 1989-05-03

Publications (2)

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EP0395807A1 true EP0395807A1 (de) 1990-11-07
EP0395807B1 EP0395807B1 (de) 1993-08-11

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EP89304484A Expired - Lifetime EP0395807B1 (de) 1989-05-03 1989-05-04 Verfahren und Vorrichtung zum Verarbeiten von komprimierte Papierabfallblöcke festhaltenden Drähten

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20155384A1 (it) * 2015-11-09 2017-05-09 Ima Spa Unita e metodo di alimentazione di prospetti informativi ad una macchina confezionatrice.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076355A (en) * 1981-05-07 1981-12-02 Tokyo Shibaura Electric Co Apparatus for taking off a band wound about a paper sheet bundle
EP0240289A2 (de) * 1986-04-03 1987-10-07 Hokkai Can Co., Ltd. Verfahren und Apparat zur Entfernung von Bindestreifen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1232563B (it) * 1989-01-31 1992-02-26 L I T A S R L Procedimento ed apparecchiatura per rimuovere reggette da articoli reggettati quali pile di segnature regettate e simili articoli

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076355A (en) * 1981-05-07 1981-12-02 Tokyo Shibaura Electric Co Apparatus for taking off a band wound about a paper sheet bundle
EP0240289A2 (de) * 1986-04-03 1987-10-07 Hokkai Can Co., Ltd. Verfahren und Apparat zur Entfernung von Bindestreifen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20155384A1 (it) * 2015-11-09 2017-05-09 Ima Spa Unita e metodo di alimentazione di prospetti informativi ad una macchina confezionatrice.
WO2017081592A1 (en) * 2015-11-09 2017-05-18 I.M.A. Industria Macchine Automatiche S.P.A. Unit and method for feeding information leaflets to a packaging machine.

Also Published As

Publication number Publication date
EP0395807B1 (de) 1993-08-11

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