JP2011050938A - Shredder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shredder in which a load is hardly applied to a cutting blade so that cutting is efficiently performed, in cutting a used ink ribbon or the like. <P>SOLUTION: The shredder suitable for cutting an ink ribbon or the like includes: a pair of feeding rollers which feed a cutting medium such as an ink ribbon and at least one of which is composed of a rotary driving shaft; and, in the back stage of the feeding rollers, a guide rotary member which has a rotary shaft in the width direction and which is composed of a plurality of disk-like rotary plates rotating with a space in the rotary shaft direction. Opposite to the guide rotary member, there is installed a rotary tearing blade having a tearing blade in which a rotating edge rotatably plunges, with a space, into the space of the guide rotary member. Further, the rotating edge of the rotary tearing blade is designed to have a higher speed than the peripheral speed of the feeding rollers. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a shredder suitable for cutting a thermal transfer type used ink ribbon or the like by a thermal head.

  A shredder is, for example, a blade that divides a used confidential document or important document into a plurality of disk-shaped slit blades, or further protrudes a sheet of paper that has been cut into a plurality of slits around the slit blade. The office shredder has a variety of forms that are cut into shorter pieces and are generally well known for paper processing.

  In recent years, however, ink ribbons that have been coated with oil-based inks that are dissolved and transferred by heat, such as ink ribbons by thermal heads, have been developed, and characters and symbols drawn on thermal heads are transferred to print media by this ink ribbon. Machines have become widespread, and ink ribbons have also spread in large quantities. Adhesive used ink ribbon dipped in ink generated after this printing has the same confidentiality centering on personal information etc., and this used ink ribbon may be lost in the process of disposal There was also. In some cases, it was sold and sold, which was a big social problem in terms of security.

  Therefore, the paper is cut with a shredder or the like in the same manner as an ordinary confidential document. However, in conventional shredders, oil-based ink or the like adheres between the disk-shaped slit blades, solidifies and accumulates, and further, sticky and torn cutting debris and oil-based ink adhere to the periphery of the slit blade and grow. When cutting itself in contact with each other, frictional force increases, contact rotation becomes impossible and breakage, etc. impairs the cutting function, shortens the normal life, makes continuous shredding difficult, etc. There was a problem.

  Accordingly, it has been attempted to incinerate the above-described used ink ribbon basically without cutting. However, there were still security problems such as losing as before while transporting to large incineration facilities. For this reason, it was encouraged to treat in the office as much as possible. However, when incineration is performed in the office, the equipment becomes large, takes time, or because of the oil-based ink ribbon, the odor of oil during combustion However, it was not effective in terms of practicality.

JP 2002-320873 A Utility Model Registration No. 3139242

Problems to be solved by the invention

  The technique described in Patent Document 1 cuts the cutting function as shown in FIGS. 1 and 2 because a sticky used master paper dipped in oil-based ink impairs the cutting function when cut with a conventional shredder. A configuration is adopted in which unnecessary paper is guided into the disc-shaped slit while being sandwiched between the auxiliary materials 5 from both sides.

  However, although this method also has the effect of wiping off the oil-based ink by the auxiliary material 5, the oil-based ink adheres to the disk-like slit blade when used for a long time, and the slit is caused by friction between the slit blade and the paper. The same problems occurred, for example, the temperature of the blade increased, the oil-based ink melted, the temperature of the slit blade decreased after the operation stopped, the melted ink solidified, and the disk-shaped slit blade stopped moving.

  In addition, as a technique described in Patent Document 2, a cutting technique called a cross cut is introduced. A sheet of paper that has been cut into a thin shape with a disk-shaped slit blade, which is further projected on the circumference of the slit blade, cut into shorter pieces, cut into pieces, and cross-cut. Features a blade. However, even with this technique, when the ink ribbon is cut, the oil-based ink adheres to the slit blade, and the oil-based ink gradually accumulates between the slit blades.

  Accordingly, the shredder for an ink ribbon of the present invention is intended to efficiently perform the cutting process because it is difficult to apply a load to the cutting blade even when the used ink ribbon is cut for a long time. is there.

Means for solving the problem

  In order to achieve the above object, the invention according to claim 1 is a shredder suitable for cutting an ink ribbon or the like, and a pair of feed rollers each having at least one of a rotational drive shaft for feeding a cutting medium such as an ink ribbon; A guide member having a gap in the width direction and moving the cutting medium in the feed direction is provided at a subsequent stage of the feed roller, and the guide member is opposed to the guide member, and a rotation edge enters the gap of the guide member. A rotary tearing blade having a tearing blade is provided, and the rotational peripheral edge of the rotary tearing blade is set to be higher than the peripheral speed of the feed roller.

  According to a second aspect of the present invention, in the first aspect of the present invention, the guide member has a rotation shaft in the width direction, and a plurality of disk-shaped rotations that rotate with a gap in the rotation axis direction. The rotary rotating blade is constituted by a guide rotation member made of a plate, and rotates in parallel with the rotation axis of the guide rotation member. The rotation periphery has a gap inside the gap between the rotation plates of the guide rotation member. In this way, it is constituted by a tearing blade that enters and rotates.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the tear blade of the rotary tear blade is a single plate so as to rotate into the gap between the rotary plates of the guide rotating member. A notch is formed with a notched tip as a cutting edge, and at least one plate-like blade is attached to a rotating shaft.

  Furthermore, the invention according to claim 4 is the invention according to any one of claims 1 to 3, further comprising: a rotary drive shaft in the vicinity of the periphery of the rotary tearing blade; The blade tip is contact-rotated to remove the cutting medium.

The perspective explanatory view showing the 1st example of the shredder of the present invention. The partial explanatory drawing to which the guide member 4 and the cutting blade 5a of this invention expand. Side surface explanatory drawing which shows 2nd Example of the shredder of this invention. FIG. 4 is an explanatory plan view showing a state of the guide rotating member 14 and the rotating tearing blade 15 in FIG. 3. Plane cross-sectional explanatory drawing which shows the static elimination brush 21 of FIG. The whole side surface explanatory view of the shredder of the 2nd example of Drawing 3. The whole front explanatory drawing of the shredder of 2nd Example of FIG. An explanatory photograph of the torn ink ribbon piece 2t.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a pair of feed rollers 3a and 3b, one of which is a rotary drive shaft for pulling out a used roll-shaped ink ribbon 2 or the like to be cut from one end and continuously feeding it, and these feed rollers 3a and 3b. A guide member 4 for moving the cutting medium formed with a gap 6 recessed in the width direction in the feed direction is provided at the subsequent stage, and the guide member 4 is opposed to the guide member 4, and the rotation periphery is inside the gap 6 of the guide member 4. A rotary tearing blade 5 having a tearing blade 5a (see FIG. 2) that rotates into the shaft is provided, and the rotational peripheral edge (5a) of the rotary tearing blade 5 is higher than the peripheral speed of the feed rollers 3a and 3b. It is set. The feed rollers 3a and 3b have a drive roller 3a and a driven roller 3b, and the shaft 3b is pressed by a spring so as to move parallel to the drive shaft 3a.

  As described above, the roll-shaped ink ribbon 2 is drawn out from one end, is fed, and flows along the guide member 4 at the peripheral speed of the feed rollers 3a and 3b. Then, the gap between the guide members is rotated into the gap 6 of the guide member 4 by a tearing blade 5a whose rotation edge rotates at a higher speed than the peripheral speed of the feed rollers 3a and 3b, and a hole is formed in the ink ribbon 2. Since the ink ribbon 2 is torn while being opened, the ink ribbon 2 can be sequentially torn.

  With such a structure, the cutting medium is not cut like a scissor with a conventional slitter blade, but a hole is made in the thin ink ribbon 2 with a sharp tearing blade 5a, and the hole is cut as a trigger. Since the cutting blade 5a has further gaps (G1, G2, G3) inside the gap 6 and does not come into contact with each other, even if oil-based ink or the like is solidified on the blade edge 5a, the cutting blades are fixed to each other. It doesn't get stuck and the cutting effect doesn't change indefinitely and can be cut in an optimal state.

  In the above embodiment, the guide member 4 is formed of a wall shape. Next, the shredder 11 will be described based on FIGS. 3 to 7 showing a second embodiment of the present invention. As shown in FIG. 3, first, a storage case 7 for storing the ink ribbon 2 to be processed is provided, from which one end of the ink ribbon 2 can be drawn. The storage case 7 has a storage lid 7a that opens and closes via a hinge portion 7b and is not driven unless the storage lid 7a is closed by the microswitch 7c. Since the end of the ink ribbon 2 is bonded and connected to the bobbin 2e, the end of the ink ribbon is pulled up together with the bobbin 2e and the storage lid 7a is pushed up at the end of the cutting process. At that time, the opening of the lid 7a is detected by the microswitch 7c, and the driving of the shredder is stopped.

  The ink ribbon 2 drawn out from the storage case 7 is provided with a pair of feed rollers 13a and 13b, one of which is a rotational drive shaft for continuously feeding the ink ribbon 2 to the cut portion via the guide rollers 16 and 17. ing. Subsequent to the guide members 4 in the first embodiment, the feed rollers 13a and 13b have a rotating shaft 14s in the width direction, and a plurality of disks rotating with a gap in the direction of the rotating shaft 14s. It is comprised by the guide rotation member 14 which consists of a plate-shaped rotation board 14b.

  The rotary tearing blade 15 provided in the same manner as in the first embodiment rotates in parallel with the rotation shaft 14 s of the guide rotating member 14, and the rotation peripheral edge of the gap 14 b between the rotating plates 14 a of the guide rotating member 14. It is comprised with the rotation tearing blade 15 which has a clearance gap inside and rotates and plunges. In this case as well, the rotational peripheral edge of the rotary tearing blade 15 is set to be higher than the peripheral speed of the feed rollers 13a, 13b (about twice in this embodiment). As in the first embodiment, the feed rollers 13a and 13b have a drive roller 13a and a driven roller 13b. The shaft 13b can move in parallel with the drive shaft 13a. It is pressed by a spring.

  As shown in the plan explanatory view showing the state of the guide rotating member 14 and the rotary tearing blade 15 of FIG. 3 in FIG. 4, first, the guide rotating member 14 has a plurality of rotating plates via gaps 14b in the direction of the rotating shaft 14s. 14 b is provided between the frames 19 and 19. On the other hand, a single plate is cut away so that the tear blades 15a are respectively inserted into the plurality of gaps 14b of the guide rotating member 14. The notched tip is formed as a tearing blade 15a, and four pieces are attached to the rotating shaft 15s while changing the direction by 90 ° (see FIG. 3).

  As shown in FIGS. 3 and 5, at the lower part of the rotary tearing blade 15, a neutralizing brush that rotates on a rotating shaft 21s for removing the ink ribbon piece 2t entangled with the cutting edge (tearing blade 15a) of the rotary tearing blade 15. 21 is provided to drop the ink ribbon piece 2t into the lower part. The rotational peripheral speed of the static elimination brush 21 is set to rotate at a higher speed than the rotational peripheral speed of the rotary tearing blade 15, and is set so that the drive is transmitted by the motor 30 and the drive belt 31. In addition, as with the rotary tearing blade 15, the static eliminating brush 21 is also provided between the frames 19 by attaching four sheets thereof with the direction changed by 90 °, similarly to the rotary tearing blade 15 (see FIG. 3).

  Reference numeral 18 in FIG. 3 denotes an ionizer that generates electric charges by applying a high voltage to the electrodes. At the same time, air is sent by a fan to remove static electricity from the cut ink ribbon piece 2t, and the cut ink ribbon piece. 2t is dropped at the bottom.

  It is desirable that the rotational peripheral speed of the guide rotation member 14 is at least equal to or higher than that of the feed rollers 13a and 13b. Further, since the rotation peripheral edge of the rotary tearing blade 15 is set to be higher than the peripheral speed of the feed rollers 13a and 13b, the ink ribbon is fed by the feed rollers 13a and 13b, and the guide rotating member 14 is further fed. Are sequentially fed and reliably torn by the rotary tearing blade 15. The relationship between the rotational peripheral speed of the guide rotating member 14 and the rotational peripheral speed of the rotating tear blade 15 is preferably set to the same speed or the rotational tear blade 15 higher than the guide rotating member 14.

  Next, a stand including a shredder 11 covered with a casing 40 and a dust box 50 in which an ink ribbon piece 2t cut by the shredder 11 is stored based on the cross section of the entire side surface of FIGS. 41 will be described.

  The lower surface of the shredder 11 covered with the casing 40, that is, the lower part of the guide rotating member 14, the rotating tearing blade 15, the static eliminating brush 21, and the like are perforated so that the cut ink ribbon piece 2t is dropped (see FIG. In addition, the hole penetrates from the upper surface of the stand 41 toward the lower surface, and a drop passage for the ink ribbon piece 2t is formed toward the lower dust box 50. Further, along the fall passage, the static eliminating cloth 44 is suspended so as to cover the four circumferential surfaces.

  As shown in FIGS. 6 and 7, the stand 41 is supported by four legs 42, and a height adjusting screw 45 is provided at the lower part thereof. As described above, the dust box 50 for storing the cut ink ribbon piece 2t is installed in the stand 41, and the handle 41 is held in front of the apparatus (right side in FIG. 6, front side in FIG. 7). Can be pulled out. A caster 52 facilitates the movement of the dust box 50 on the floor surface. Reference numeral 43 denotes a stopper in which the dust box 50 is fixed at a predetermined position.

  The shredder 11 configured as described above pulls out one end of the used roll-shaped ink ribbon 2, sets it in the storage case 7, and closes the lid 7a. One end of the ink ribbon 2 is stretched over the guide rollers 16 and 17, and the feeding roller 13a and 13b are sandwiched to complete the setting. In this setting method, the feed roller 13b is a driven roller, and the shaft can move. Therefore, the feed roller 13b can be pulled away to the front (right side in FIG. 3) and one end of the ink ribbon 2 can be sandwiched.

  When the start switch is pressed in the state where the setting is completed, the ink ribbon 2 is sequentially fed between the guide rotating member 14 and the rotating tearing blade 15, and the tearing blade 15a rotates into the gap 14b of the guide rotating member 1, The ink ribbon 2 is torn and cut while being punched. Since the ink ribbon piece 2t is rubbed or shocked and is charged with static electricity, it sticks to the rotary tearing blade 15, but is scraped off by the neutralization brush 21 at the subsequent stage or blown off by the ionizer 18, so that the neutralization cloth 44 falls. It is guided and stored in the lower dust box 50 smoothly along the passage.

  The cut shape of the torn ink ribbon piece 2t changes depending on the peripheral speed ratio between the feed rollers 13a and 13b and the rotary tearing blade 15, but as shown in FIG. 8, it is torn and cut into zigzag chips to make it unreadable. .

  The cutting is completed, the ink ribbon 2 bobbin 2e is pulled up, the storage lid 7a is lifted, a lid opening signal is generated by the microswitch 7c, and the drive of the shredder 11 is stopped.

  Thus, in the case of the shredder of the present invention, since it is based on the principle of a structure in which a thin ink ribbon is perforated with a sharp blade edge and is not torn with a conventional slit blade like a pair of scissors, There is no friction, and the ink ribbon can be torn stably and stably without suffering problems such as increased cutting friction due to oil-based ink.

  In the above embodiment, in order to guide the dust box 50 after cutting, static electricity is removed together with air by the ionizer 18. However, by installing an air suction device on the dust box side, the ionizer 18 depends on the size of the shredder 11. May be omitted.

  Also, as shown in FIGS. 1 and 2, the cutting edge of the rotary tearing blade 5 is M-shaped and the protrusion is bifurcated. The shape may be any of various shapes. Further, although the shape of the tearing blade 15a of the second embodiment is not shown in the drawing, the M-shape and the A-shape may be appropriately adopted as in the first embodiment for convenience, and the tearing blade 15a and the gap 14b are used. Is also provided in the same manner as the gap 6 and the drawing is omitted.

DESCRIPTION OF SYMBOLS 1, 11 ... Shredder 2 ... Ink ribbon 3a, 3b, 13a, 13b ... Feed roller 4 ... Guide member 5a, 15a ... Tear blade 5, 15 ... Rotating member 6 ... · Gap 7 · · · Storage cases 13a and 13b · · · Feed roller 14 · · · Rotary guide member 14a · · · Rotary guide member piece 14b · · · Clearance 16 and 17 · · · Guide roller 18 · Static electricity removal Device 21a ... neutralizing brush 40 ... casing 41 ... stand 50 ... dust box

Claims (4)

  A pair of feed rollers, at least one of which is a rotary drive shaft for feeding a cutting medium such as an ink ribbon, and a guide member for moving the cutting medium in the feeding direction with a gap in the width direction at the subsequent stage of the feeding roller A rotating tear blade having a tearing blade facing the guide member and having a rotating peripheral edge that rotates into the gap of the guide member, and the rotational peripheral edge of the rotating tear blade is arranged around the periphery of the feed roller. A shredder suitable for cutting an ink ribbon or the like, characterized by being configured to be faster than the speed.   The guide member has a rotation axis in the width direction, and is constituted by a guide rotation member composed of a plurality of disk-shaped rotation plates that rotate with a gap in the rotation axis direction. The above-mentioned invention is characterized in that it is constituted by a tearing blade that rotates in parallel with the rotation axis of the guide rotation member, and whose rotation periphery has a clearance inside the clearance between the rotation plates of the guide rotation member. A shredder suitable for cutting an ink ribbon or the like according to claim 1.   The tearing blade of the rotating tearing blade is formed by cutting out a single plate so as to rotate and enter into the gap between the rotating plates of the guide rotating member, and using the notched tip as a cutting edge. 3. The shredder according to claim 1, wherein at least one sheet is attached to the rotating shaft.   A rotary drive shaft is provided near the periphery of the rotary tearing blade, and a neutralizing brush is disposed around the rotary shaft, and the tip of the rotary tearing blade is contacted and rotated to remove the cutting medium. The shredder according to claim 1.

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