JP2009012902A - Paper feeding mechanism and paper feeding device for shredder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper feeding mechanism and a paper feeding device for a shredder capable of forcibly feeding a fixed amount by a first rotor and a second rotor equipped with claws only by setting and placing a paper bundle in a paper feeding tray, and enabling the shredder to efficiently cut the paper bundle of a limited number sheets. <P>SOLUTION: The paper feeding mechanism of a shredder device transmitting rotation driving force of a cutting portion and supplying the paper bundle of a plural number of sheets to the shredder, comprises the first rotor equipped with a disc-shaped claw element formed with a sharp portion for feeding paper and a rotating portion, a carrying roller feeding the paper bundle forcibly fed by the first rotor, the second rotor equipped with a discoid claw element formed with a sharp portion limiting the number of fed sheets of the paper bundle fed by the carrying roller and a rotating portion, and a pressurizing roller coming contact with an outer peripheral surface of the second rotor to nip the paper bundle to feed out. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper feeding mechanism and a paper feeding device that can send out a plurality of paper bundles, and in particular, pierces a plurality of paper bundles by a first rotary body and a second rotary body equipped with a claw body, and processes a shredder The present invention relates to a paper feed mechanism and a paper feed device that send out a limited number of possible paper bundles.

In recent years, from the viewpoint of preventing information leakage, documents are not discarded as they are, but are shredded by a shredder or other shredder or shredder and then discarded.
In recent years, shredders for cutting documents and the like have been improved in performance, and the number of shredders that are cut more finely so that they cannot be reproduced is increasing. However, there is a problem that the number of sheets that can be processed at a time is limited. Although a mechanism has been developed to separate the paper sheets to be discarded one by one and supply them to the cutting machine, multiple sheets that can be processed that can be cut by a shredder are sent out as needed to efficiently cut multiple sheets simultaneously. There is a problem that it cannot be easily realized because the paper jam problem cannot be solved.

In order to solve the above problems, a mechanism of “automatic paper feeding mechanism and automatic paper feeding device” (Japanese Patent Application No. 2006-145833) for feeding a plurality of paper bundles has been developed. With this mechanism, a limited number of paper bundles are forcibly sent out according to the processing capacity of the shredder, but the forced feeding output of the disk-shaped claw body with sharp parts is strong, and a paper bundle exceeding the limited number is sent out. Thus, it has been found that the paper is stuck in a wedge-like stack, causing jamming and causing a malfunction.
Therefore, development of a paper feeding mechanism and a paper feeding device that restricts the supply of paper bundles that exceed the processing capacity of the shredder that causes stacking and reliably and smoothly sends a limited number of paper bundles to the shredder is awaited. It was.
Japanese Patent Application No. 2006-145833

  In order to solve the above problem, just by setting the waste document bundle on the tray, the first rotating body and the second rotating body equipped with the claw body can forcibly send the paper bundle in an amount corresponding to the processing capacity. It is an object of the present invention to provide a paper feeding mechanism and a paper feeding device for a shredder capable of cutting a bundle of documents limited in the capacity range.

  A paper feed mechanism according to the present invention is a paper feed mechanism of a shredder device that supplies a plurality of paper bundles to a shredder by transmitting a rotational driving force of a shredding section that meshes a cutting blade to rotate and shred a paper bundle. A first rotating body provided with a disk-shaped claw body formed with a sharp part for paper feeding and a rotating part, a conveying roller for sending a paper bundle forcibly sent by the first rotating body, A second rotating body including a disk-like claw body formed with a sharp portion for limiting the number of paper bundles fed by the conveying roller and feeding a stacked paper bundle, and a rotating portion; and the second rotation It is a configuration equipped with a pressure roller that comes into contact with the outer peripheral surface of the body and clamps and feeds the paper bundle.

  Further, the disc-shaped claw body has a configuration in which a sharp portion is formed substantially perpendicular to the peripheral edge of the disc-shaped claw body, or the tip of the sharp portion in the rotation direction along the outer peripheral edge of the disc-shaped claw body. It is also the structure formed toward.

  Also, the paper feeding device of the present invention feeds a plurality of paper bundles to the shredder by transmitting the rotational driving force of the shredding part that meshes the cutting blades to rotate and shred the paper bundle. The apparatus includes a first rotating body including a paper feed tray provided with a hole in a bottom surface for setting and holding a bundle of paper to be cut, a disk-shaped claw body having a sharp portion for feeding paper, and a rotating portion, A disk-shaped claw body formed with a conveying roller for forcibly feeding a paper bundle forcibly delivered by the first rotating body, and a sharp portion for limiting the number of paper bundles delivered by the conveying roller and for delivering the stacked paper bundle A feed mechanism including a second rotating body having a rotating portion and a pressure roller that contacts the outer peripheral surface of the second rotating body and holds and feeds a bundle of paper, and transmits power from a drive source Equipped at the end of the rotating shaft of the first rotating body, transport roller and second rotating body Is a equipped with the structures and the gear portion of at least one gear and a plurality of gears to be engaged.

Since the sheet feeding device and the sheet feeding method according to the present invention are configured as described in detail above, they have the following effects.
1. The paper bundle is separated in two stages by a rotating body provided with a claw body, and a limited number of paper bundles according to the processing capability of the shredder can be reliably sent out. Since the paper bundle is nipped and sent out by the second rotating body and the pressure roller, the stacked paper bundle can be easily pulled out, and the paper can be stably fed to the shredder portion. Moreover, since the conveyance roller is provided between the 1st rotary body provided with the nail | claw body and the 2nd rotary body, sending out is smooth.

2. When the sheet bundle comes into contact with the roller surface of the rotating body, the document bundle can be separated into a limited number of shredders. The number of sheets of paper is limited by the piercing by the sharp part and the contact with the roller surface, it is possible to forcibly send out the stacked paper bundle, and it is possible to prevent the paper bundle exceeding the limited number from being sent to the shredder. .
3. Since the claw body is formed along the rotation direction, it is easy to pierce the sharp part into the paper bundle, and the paper can be reliably fed out into the paper bundle.
4). Since the driving force of the shredder portion is used, it is effective because no other driving device is required. Further, the gear structure makes it easy to operate the rotation of the rotation shaft, and the paper bundle can be sent out efficiently.

Hereinafter, a paper feed mechanism according to the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a perspective view of a sheet feeding device provided with a sheet feeding mechanism of the present invention, FIG. 2 is a perspective view of a first rotating body and a second rotating body of the present invention, and FIG. 3 is a disk shape of the present invention. FIG. 4 is a side view of another claw-shaped claw body, and FIG. 5 is a cross-sectional view of a gear engagement structure in a paper feed mechanism.
The sheet feeding mechanism 11 of the present invention is configured by a first rotating body 20, a transport roller 30, a second rotating body 40, and a pressure roller 60. Further, the paper feeding device 10 of the present invention is configured by a paper feeding mechanism 11, a paper feeding tray 70, and a gear unit 80.

The first rotator 20 is a substantially cylindrical member that separates and forcibly sends out the sheet bundle 72 that can be cut by the shredder from the document bundle loaded on the sheet feeding tray 70. The first rotating body 20 includes a rotating portion 22 fixed to a rotating shaft and a disc-shaped claw body 50. In this embodiment, the first rotating body 20 is provided at two locations. The installation location is not limited to the installation location of this embodiment, and can be provided at one or more locations.
The rotating portion 22 can be a roller member having a smooth curved surface, or a cylindrical member having a knurled or protruding portion 24 on its peripheral surface as shown in FIG.
A paper bundle 72 loaded on the paper feed tray 70 is pressed from above, and a sharp tip is stuck into the paper bundle 72 at the top of the paper bundle by the first rotating body 20 that is rotatably installed. The bundle 72 is separated from the upper part of the document bundle and sent to the conveying roller 30.

The disk-shaped claw body 50 is a disk-shaped member equipped with sharp portions 52a and 52b on the periphery. The sharp portions 52a and 52b are pierced into the paper bundle 72, and the paper bundle 72 is sent out while being penetrated or pierced. The disc-shaped claw body 50 is provided at both ends or one end of the rotating unit 22.
As shown in FIGS. 3 and 4, the sharp portions 52 a and 52 b of the disc-shaped claw body 50 have sharp edges 52 a formed substantially perpendicular to the outer periphery of the disc-shaped claw body, and the outer peripheral edge of the outer periphery of the disc-shaped claw body 50. A sharp portion 52b or the like formed with the tip of the sharp portion extending in the rotation direction along the rim is formed in a shape that can pierce the paper bundle 72. Since the sharp portion 52a is formed substantially vertically, the paper bundle 72 can be pierced at any angle, and a certain amount of the paper bundle 72 is surely sent out even if the paper bundle 72 is messy. be able to. The sharp portions 52a and 52b can be changed in size according to the number of shredders that can be cut.

  As shown in FIG. 2, a rotating body in which a plurality of rotating portions 22 and a plurality of disc-shaped claw bodies 50 are combined can be provided. The paper bundle 72 is brought into contact with the circumferential surface of the rotating portion 22 or the protrusion 24, thereby limiting the number of paper bundles 72 pierced by the sharp portions 52 a and 52 b of the disc-like claw body 50. The amount of the paper bundle 72 to be sent out can be freely controlled by the length of the sharp portions 52a and 52b protruding from the height of the 50 peripheral edge.

  The transport roller 30 is a roller that transports a paper bundle 72 that is installed between the first rotary body 20 and the second rotary body 40 that are installed in parallel. As described above, one to a plurality of conveying rollers 30 can be provided in parallel. The transport roller 30 can be a cylindrical member having a smooth surface as in the rotating portions 22 and 42, or a cylindrical member having a protrusion on the peripheral surface.

The second rotating body 40 separates a plurality of paper bundles 72 conveyed by the conveying roller 30 into a limited number of sheets according to the shredding processing capability of the shredder and sends it to the shredding unit. Like the first rotating body 20 shown in FIG. 2, the second rotating body 40 includes a rotating portion 42 and a disc-like claw body 50, and the rotating portion 42 is a roller member having a smooth curved surface, or a knurled or protruding portion. A cylindrical member equipped with the portion 44 can also be used.
The paper bundle 72 to be sent out is not a single sheet of paper but is sent out as a stack of multiple sheets. Note that even one sheet can be sent out. The adjustment of the number of sheets can be dealt with by changing the protruding ratio of the rotating parts 22 and 42, the disc-shaped claw body 50, or the sharp parts 52a and 52b from the circumference of the size. Moreover, it is also possible to make the rotation parts 22 and 42 of the 1st rotary body 20 and the 2nd rotary body 40, and the disk-shaped claw body 50 into a respectively different magnitude | size. By making the width of the rotating part 42 of the second rotating body 40 and the sharp parts 52a, 52b protruding from the rotating part 42 narrower than that of the first rotating body 20, the sheet separating function can be made more reliable.

  As shown in FIG. 5, the pressure roller 60 has a roller surface that comes into contact with the outer peripheral surface of the second rotating body 40 and rotates to rotate the first and second rotating body rows. It is a roller installed on the opposite lower side. The outer peripheral surface of the pressure roller 60 can be formed of synthetic resin or metal, but is preferably formed of an elastic body such as rubber. By applying pressure from the top and bottom to the second rotating body 40 having a claw body on the outer peripheral surface having elasticity and holding and feeding the paper bundle 72, it is possible to reliably feed more than the rubber rollers or a combination of the rubber roller and the rigid roller. A feeding operation can be obtained, and the stacked paper bundle 72 can be easily pulled out. The pressure roller 60 may have a structure in which a groove is provided on the peripheral surface where the sharp portions 52a and 52b of the disc-shaped claw body on the outer peripheral surface come into contact. An appropriate clamping force can be obtained by providing the groove.

  Next, the paper feeder 10 according to the present invention will be described in detail. The sheet feeding device 10 includes a sheet feeding mechanism 11, a sheet feeding tray 70, and a gear unit 80, and is mounted on the shredder unit by being incorporated in a shredder device including a main body and a sheet feeding outlet. Thus, it can be used as an automatic paper feeder. In this embodiment, since the same drive source as the shredder drive source can be used, a separate drive source is not required for the sheet feeder.

  The paper feed tray 70 is a standby place for the paper bundle 72 sent out by the first rotating body 20, and a document bundle and a plurality of paper bundles are set therein. Since the configuration is such that the sheet bundle 72 is sent out by the disc-like claw body 50 of the first rotating body 20, the angle at which the paper bundle 72 is set may be any angle, and may be a paper feed tray that is parallel to the top surface of the shredder body. . In addition, a hole is formed in the surface of the paper feed tray 70 through which the rotating portion of the disc-shaped claw body passes so that the disc-shaped claw body 50 can reliably rotate and the paper bundle 72 can be pierced and sent out reliably. Is also possible. When the disc-shaped claw pierces the paper bundle and reaches the back surface, it may be possible to pierce the bottom surface of the paper feed tray 70. However, by forming a hole in the paper feed tray, a small number of paper bundles can be sharpened. Even if the section reaches the back surface, the paper bundle can be pierced and sent out without damaging the paper feed tray.

The paper feed mechanism 11 is configured by a first rotary body 20, a transport roller 30, a second rotary body 40, and a pressure roller 60 as described above. The first rotating body 20 and the second rotating body 40 are composed of rotating parts 22 and 42 and a disc-shaped claw body 50.
Moreover, the 1st rotary body 20, the conveyance roller 30, the 2nd rotary body 40, and the pressurization roller 60 are each pivotally attached to the rotating shaft 25 * 35 * 45 * 65 provided in parallel. The rotary shafts 25, 35, 45, and 65 are configured to be provided on both sides of the apparatus. A gear is provided at the end of the rotating shaft located on the side of the sheet feeding device, and the driving force generated from the driving source is transmitted to the rotating shaft. In addition, the paper is forcibly sent out by the sharp portion of the disc-shaped claw 50 attached to the rotation shaft.
The paper bundle 72 set in the paper feed tray 70 is sent out from the upper surface of the paper bundle 72 toward the shredder portion by the first rotating body 20. The paper bundle 72 is pierced into the sharp part formed in the disc-like claw 50 of the first rotating body 20 and sent to the transport roller 30, and is limited to a small number of sheets by the transport roller part. Further, as a second stage, the sheet bundle 72 stacked on the transport roller unit is sequentially sent out by forced sending by the second rotating body 40.

  As shown in FIG. 1, the gear unit 80 is a gear group for transmitting a driving force from a driving source to a paper feeding mechanism via a plurality of gears. The gear unit 80 is at least one gear mounted on the end of the rotary shaft 25, 35, 45, 65 on which the first rotary body 20, the transport roller 30, the second rotary body 40, and the pressure roller 60 are attached. And the rotational force of the drive source is transmitted. The remaining rotating shafts are configured to engage with the rotating shafts to which the driving force is transmitted and to rotate simultaneously with the gears. Also, a structure that rotates simultaneously with the rotation of the rollers installed inside the paper feeding device, and a rotating body that is pivotally mounted on a rotating shaft that does not have a gear rotates simultaneously by forcibly feeding a paper bundle. It is possible to make the structure to be.

In the embodiment shown in FIG. 5, the first gear 26 provided on the rotary shaft 25 of the first rotating body and the second gear 36 provided on the rotary shaft 35 of the conveying roller are engaged by the third gear 82 to rotate. One of the shaft 25 and the rotating shaft 35 is rotated by the gear portion, and the other rotating shaft is simultaneously rotated. The second rotating body 40 is configured to rotate with the rotation of the pressure roller 60 inside the sheet feeding device driven by the gear unit 80.
It is also possible to employ a structure that engages with the gears provided at the ends of the rotary shafts 25, 35, 45, and 65 and rotates the rotary shafts.

  The paper feeding device 10 of the present invention sets the paper in the paper feeding tray 70 and starts the operation of the shredder unit, whereby the driving force is transmitted to the gear unit 80 and rotates the rotating shaft equipped with the gear. Then, the disk-like claw body 50 mounted on the first rotary body 20 and the second rotary body 40 rotates and the sharp portions 52a and 52b are pierced into the paper bundle 72, and the number of sheets less than a certain amount is forced in the direction of the shredder portion. The sheet bundle 72 is sent out. In order to secure a driving force with the paper feeding device 10 itself, it is possible to equip the paper feeding device with a driving source. Further, the paper bundle 72 to be sent can be sent out even if it is a single paper sheet or a plurality of paper bundles that are not a single paper sheet.

  As described above, the paper feeding mechanism and the paper feeding device according to the present invention are techniques for feeding the paper bundle 72 by the feeding mechanism including the first rotating body 20, the transport roller 30, and the second rotating body 40. The combination of the limitation of the number of sheets fed according to the processing capability of the device, and the disc-shaped claw body 50 formed with the rotating portions 22 and 42 having a shape that allows separation of the paper bundle and the lateral width of the paper bundle and the sharp portion. It is equipped. The second rotating body that sandwiches and feeds the paper bundle 72 together with the first rotating body and the pressure roller punctures the paper bundle twice and achieves the two-stage forced feeding, so that the shredder is surely A bundle of sheets with a cutting limit can be sent out, and the paper can be fed stably.

The perspective view of the paper feeder of the present invention The perspective view of a 1st rotary body and a 2nd rotary body Side view of discoid claw Side view of another disc-shaped claw body Sectional view of gear engagement structure in paper feed mechanism

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Paper feeder 11 Paper feed mechanism 20 1st rotary body 22,42 Rotating part 24,44 Projection part 25,35,45,65 Rotating shaft 26 1st gear 30 Conveyance roller 36 2nd gear 40 2nd rotary body 50 Disc Shaped claw bodies 52a, 52b Sharp portion 60 Pressure roller 70 Paper feed tray 72 Paper bundle 80 Gear portion 82 Third gear

Claims (4)

In the paper feed mechanism of the shredder device that supplies a plurality of paper bundles to the shredder by transmitting the rotational driving force of the shredding part that rotates and shreds the paper bundle by meshing the cutting blade,
A first rotating body having a disk-shaped claw body formed with a sharp portion for feeding paper and a rotating section, a conveying roller for sending out a bundle of paper forcedly fed by the first rotating body, and the conveying roller A second rotating body including a disk-shaped claw body on which a sharp portion for limiting the number of fed paper bundles to be sent out and a stacked paper bundle is fed, and a rotating portion, and an outer peripheral surface of the second rotating body And a pressure roller that contacts and feeds the paper bundle.   2. The paper feed mechanism according to claim 1, wherein the disk-shaped claw body forms a sharp portion substantially perpendicular to the periphery of the disk-shaped claw body.   2. The paper feed mechanism according to claim 1, wherein the disc-shaped claw body has a sharpened tip formed in a rotation direction along an outer peripheral edge of the disc-shaped claw body. A shredder paper feeding device that supplies a plurality of paper bundles to the shredder by transmitting the rotational driving force of the shredding part that rotates and shreds the paper bundle by engaging the cutting blade,
A paper feed tray with a hole in the bottom for setting and holding a bundle of paper to be cut;
A first rotating body provided with a disk-shaped claw body formed with a sharp part for feeding paper and a rotating part, a conveying roller for sending a paper bundle forcibly fed by the first rotating body, and sent by the conveying roller A second rotating body provided with a disk-shaped claw body on which a sharpened portion for feeding the stacked paper bundle is sent and a rotating section, and an outer peripheral surface of the second rotating body. A paper feeding mechanism composed of a pressure roller that sandwiches and feeds a paper bundle;
A gear portion composed of a plurality of gear groups engaged with at least one gear equipped at the end of the rotating shaft of the first rotating body, the transport roller, and the second rotating body for transmitting power from the drive source; A paper feeding device characterized by comprising:

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