EP0395807A1 - Method of and apparatus for processing wires fastening compressed wastepaper block - Google Patents
Method of and apparatus for processing wires fastening compressed wastepaper block Download PDFInfo
- 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
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- 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.)
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Classifications
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- 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)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
- 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. In the 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.
- Heretofore, it has been customary to remove the wires manually. That is, the wires have been cut off, one by one by a cutter operated by the operator. However, it has been time-consuming to cut off the wires since the wires are deeply embedded in the compressed water paper block. The manual process also has had a safety problem since the operator tends to get injured when cutting off the wires.
- To solve the above problems, there has been proposed an automatic wire cutting apparatus as disclosed in Japanese Patent Publication No. 62-26976.
- 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.
- With the conventional automatic wire cutting apparatus, the tooth plates have to be forced into the wastepaper block before the wires are cut off or processed. Inasmuch as 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. Sometimes, the wires may not be cut off because the tooth ends are not driven deeply enough to reach the wires. When cutting off the wires, the wastepaper is also cut off, producing a large quantity of paper dust which makes the working environment bad.
- It is a major object of the present invention to provide a method of and apparatus for safely and easily processing, i.e., cutting off, wires which fasten a rectan gular compressed wastepaper block that has been produced from wastepaper such as of newspapers, magazines, or the like by a compressor.
- 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.
- To accomplish the above objects, there is provided according to the present invention 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.
- According to the present invention, there is also provided 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.
- In the accompanying drawings:-
- Fig. 1 is a perspective view of a fastening wire processing apparatus according to the present invention;
- Fig. 2 is an elevational view of a presser/wire clamp;
- Fig. 3 is a perspective view of the presser/wire clamp;
- Figs. 4 and 5 are schematic views showing the step of bending a compressed wastepaper block;
- Figs. 6 and 7 are schematic views showing the manner in which a wire exposed on a concave side of the bent compressed wastepaper block is gripped by the presser/wire clamp;
- Figs. 8 and 9 are schematic views illustrating the manner in which a wire on a projecting side of the compressed wastepaper block is cut off; and
- Figs. 10 and 11 are schematic views showing the manner in which the wire that has been cut off is processed.
- 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 ofhydraulic cylinders 5 connected respectively to the upper and lower ends of the presser/wire clamp 4. When the piston rod of thehydraulic 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 thehydraulic 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. - As shown in Figs. 2 and 3, the presser/
wire clamp 4 has a plurality of pairs offingers wires 2. Thefingers 6A are mounted respectively on the shafts ofpinions 7A, whereas thefingers 6B are mounted respectively on the shafts ofgears 7B meshing with thecorresponding pinions 7A. The presser/wire clamp 4 also includes arack 8 meshing with the pinions 7a and connected to ahydraulic clamp cylinder 9 in the presser/wire clamp 4. When therack 8 is elevated by theclamp cylinder 9, thepinions 7A and thegears 7B are rotated about their own axes to close the pairs offingers wires 2 which are exposed on a concave side of the compressed wastepaper block 1, as described later on. When the piston rod of theclamp cylinder 9 is contracted, therack 8 is lowered to rotate thepinions 7A and thegears 7B in the opposite directions to open thefingers fingers fingers wire clamp 4. - In Fig. 1, the wire processing apparatus also includes a pair of erected
bending guide plates 10 having respective tapered surfaces and disposed in confronting relation to thepresser 4 across the working table 3. While thebending 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 theguide plates 10, ahydraulic cylinder 12 for moving the cutter 11 back and forth, andhorizontal 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 thewires 2 that have been cut off. Amovable feed roller 15 coacts with the fixedfeed roller 14. Thefeed rollers wires 2, as described later on. - The
movable feed roller 15 can be moved by ahydraulic cylinder 16. Themovable feed roller 15 is guided for stable movement byhorizontal guide posts 17. When thehydraulic cylinder 16 is extended, themovable feed roller 15 is moved up to the fixedfeed roller 14 until their teeth mesh with each other for clamping thewires 2 to deliver out thewires 2. A motor is disposed below the fixedfeed roller 14 and has its output shaft coupled to the lower end of the fixedfeed roller 14 for rotating thefeed roller 14 about its own axis. - The
feed rollers - A fixed
cutter blade 18 is securely positioned near thefeed rollers movable cutter blade 19 is movably located near the fixedcutter blade 18, themovable cutter blade 19 being movable toward and away from the fixedcutter blade 18 by means of ahydraulic cylinder 20 while being guided byguide posts 21. - In the embodiment shown in Fig. 1, the
guide plates 10 are fixed and have tapered surfaces. However, 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. Alternatively, a pair of hydraulic cylinders may be connected to the back surfaces of theguide plates 10 to move theguide plates 10 back and forth, so that theguide 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 theguide plates 10 confronting the presser/wire clamp 4 jointly serve as a bending means for bending the compressed wastepaper block 1. Therack 8 and thefingers wires 2. As described above, the cutter 11 actuatable by thehydraulic cylinder 12 serves as the cutting means for cutting off thewires 2. The fixedfeed roller 14 and themovable feed roller 15 jointly serve as a feeding means for feeding thewires 2. The fixedcutter blade 18 and themovable cutter blade 19 jointly serve as a severing means for severing thewires 2 that have been cut off by the cutter 11 and delivered by the feeding means. - A method of processing or cutting off the
wires 2 fastening the compressed wastepaper block 1 will be described below. - 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. When the compressed wastepaper block 1 is moved toward a predetermined bending position by the conveyor of the working table 3, it is detected by a limit switch (not shown) and stopped in the bending position (see Fig. 4). Then, 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. Continued movement of the presser/wire clamp 4 causes the opposite side of the compressed wastepaper block 1 to engage theguide plates 10. The compressed wastepaper block 1 is now forcibly bent arcuately by being guided by the tapered surfaces of the guide plates 10 (see Fig. 5). - When the compressed wastepaper block 1 is thus bent, 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 tensionedwires 2 which have been exposed are held against the distal end of the presser/wire clamp 4. - Then, the presser/
wire clamp 4 is retracted away from the compressed wastepaper block 1 as shown in Fig. 6. Thetensioned wires 2 are also separated fully from the compressed wastepaper block 1. At this time, theclamp 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). - After it has been confirmed that the
wires 2 are fully clamped by the presser/wire clamp 4, the presser/wire clamp 4 is further retracted away from the compressed wastepaper block 1 to tension the portions of thewires 2 which are positioned on a convex or projectingside 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. - Then, the
hydraulic cylinder 12 is actuated to thrust the cutter 11 substantially centrally into thepro jecting side 23 of the compressed wastepaper block 1 (Fig. 8). More specifically, the presser/wire clamp 4 which grips thewires 2 is retracted and then stopped in the position of Fig. 7 as electrically detected by a sensor (not shown), after which thehydraulic cylinder 12 is operated to drive the cutter 11 substantially centrally into the convex side of the compressed wastepaper block 1. At this time, thewires 2 are reliably severed by the cutter 11 since thewires 2 on theconvex side 23 are held under considerable tension. - The thrusting movement of the cutter 11 into the
convex side 23 of the compressed wastepaper block 1 pushes theconvex side 23 back toward the concave 22, so that the bent compressed wastepaper block 1 may return to its original shape (see Fig. 8). - After the cutting off of the
wires 2 are confirmed, the piston rod of thehydraulic cylinder 12 is retracted, and the presser/wire clamp 4 is retracted to a position behind thefeed rollers wires 2 from the compressed wastepaper block 1 (Fig. 9). - Then, the
movable feed roller 15 is moved toward the fixedfeed roller 14 by thehydraulic cylinder 16 until their teeth mesh with each other with thewires 2 interposed therebetween. Themovable cutter blade 19 is moved toward the fixedcutter blade 18 by thehydraulic cylinder 20 to cut off the wires 2 (Fig. 10). Thefeed rollers wires 2 by a predetermined length, and then thecutter blades wires 2 again. Thewires 2 are cut off or processed in this manner by repeating the alternate operation of therollers cutter blades 18, 19 (Fig. 11). - With the present invention, as described above, 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. At the same time, 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.
- According to the present invention, therefore, 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.
- Since the severed wires remain gripped by the presser/wire grip, they can smoothly be delivered out by the feeding means for easy subsequent processing of the wires.
Claims (8)
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 said concave, to cut off the wire; and
removing the wire that has been cut off from the compressed block.
bending means for bending the compressed block on a working table substantially arcuately;
gripping means for gripping a portion of the wire which is 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 said concave;
feeding means for delivering out the wire cut off by said cutting means; and
severing means for severing the wire delivered by said feeding means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE1989608391 DE68908391T2 (en) | 1989-05-04 | 1989-05-04 | Method and apparatus for processing wires holding compressed blocks of waste paper. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US34673989A | 1989-05-03 | 1989-05-03 |
Publications (2)
Publication Number | Publication Date |
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EP0395807A1 true EP0395807A1 (en) | 1990-11-07 |
EP0395807B1 EP0395807B1 (en) | 1993-08-11 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP89304484A Expired - Lifetime EP0395807B1 (en) | 1989-05-03 | 1989-05-04 | Method of and apparatus for processing wires fastening compressed wastepaper block |
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EP (1) | EP0395807B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155384A1 (en) * | 2015-11-09 | 2017-05-09 | Ima Spa | Unit and method of feeding information sheets to a packaging machine. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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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 (en) * | 1986-04-03 | 1987-10-07 | Hokkai Can Co., Ltd. | Method of and apparatus for removing tying band |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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IT1232563B (en) * | 1989-01-31 | 1992-02-26 | L I T A S R L | PROCEDURE AND EQUIPMENT FOR REMOVING STRAPS FROM ARTICLES DESIGNED AS STACKS OF REGULATED MARKINGS AND SIMILAR ARTICLES |
-
1989
- 1989-05-04 EP EP89304484A patent/EP0395807B1/en not_active Expired - Lifetime
Patent Citations (2)
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 (en) * | 1986-04-03 | 1987-10-07 | Hokkai Can Co., Ltd. | Method of and apparatus for removing tying band |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155384A1 (en) * | 2015-11-09 | 2017-05-09 | Ima Spa | Unit and method of feeding information sheets to a packaging machine. |
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 |
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EP0395807B1 (en) | 1993-08-11 |
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