JPH08118257A - Sheet bundle binding device and sheet after-processing device provided with sheet bundle binding device - Google Patents

Abstract

PURPOSE: To prevent the scattering of needle plates in a mountable and demountable cartridge in a sheet bundle binding device. CONSTITUTION: A cartridge 8 is composed of a needle case 12 housing a needle plate bundle which consists of plural sheets of needle plates 11; and a spring case 13 allowable to mount and demount to the needle case 12, and housing a pressing spring to give an auxiliary conveying force to the needle plates 12; and the cartridge 8 is provided allowable to mount and demount to a sheet bundle binding device. Of the tops including the two tops of the needle plate bundle. at the opposite side in the conveying direction of the conveying surface side, and four tops at the opposite side to the conveying surface side, at least at two tops, restraining holders 12d, 12b and 12c are provided to the needle case 12, so as to prevent the scattering of needle plates 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet binding device for binding a bundle of sheets, and more particularly to a binding needle accommodating means of the sheet binding device.

[0002]

2. Description of the Related Art Conventionally, a sheet post-processing apparatus (sorter, finisher, etc.) for post-processing a sheet discharged from an image forming apparatus such as a copying machine, a printing machine, a recording apparatus, etc. has a sheet bundle of aligned sheets. Some include a sheet bundle binding device (hereinafter referred to as a stapler) for binding.

As a stapler, there are known a simple type small stapler which manually staples a bundle of sheets and an electric stapler. The latter electric stapler will be described with reference to FIGS. 4 and 5.

In the figure, 117A is a stapler main body, which is provided with a pair of opposing frames 2. The rotation of the drive motor M1 fixed to one frame 2 is transmitted to the swing shaft 4 via the gear train 3. An eccentric cam 5 is fixed to the swing shaft 4.

A pair of swing levers 6 are swingably supported by a spindle A on a support member (not shown) provided on the stapler body 117A. A roller 6a provided on the swing lever 6 is pressed against the eccentric cam 5 by a spring (not shown), and the swing lever 6 swings based on the cam characteristic of the eccentric cam 5 when the eccentric cam 5 rotates. (It is shown by the one-dot chain line in the figure). A magazine 7 is attached to the swing lever 6, and the magazine 7 includes
A cartridge (binding device for storing staples) 8 is provided,
In the cartridge 8, a plurality of needle plates formed by connecting staple bindings are loaded.

On the surface of the magazine 7 that comes into contact with the lower surface of the cartridge, a delivery roller (binding needle transport means) 9 for transporting the needle plate is arranged. The lowest needle plate in the cartridge 8 is the delivery roller 9
Is transported by.

A forming portion 10 which is interlocked with the swing of the swing lever 6 is arranged downstream of the feed roller 9 in the transport direction so as to separate the fed needle plates into one and to transform them into a U-shape. Therefore, the swinging operation of the swinging lever 6 cooperates with the anvil 11 on the facing surface to bind the sheet bundle.

FIG. 13 and FIG. 1 regarding the conventional cartridge
Further description will be given based on 4.

A single needle plate 21 is formed by arranging a plurality of binding needles in a row and adhering them, and the plurality of needle plates 21 are loaded in a case 22 and stacked. There is. In addition, each needle plate 21 is adhered by a weak adhesive force, and the needle plate 2 on the transport surface side is attached.
When the carrying force acts on 1, one needle plate 21 is carried away from the other needle plate 21.

On the lower surface of the case 22, winding portions 22a are arranged in three traverse portions other than the conveying direction so that the needle plate 21 does not come off, and the needle plate 21 is exposed on the lower surface other than the winding portion.

A pressing spring (needle conveyance assisting means) 24 is pressed against the upper surface of the needle plate 21 via a pressing plate 23 to urge the lowermost needle plate 21 toward the delivery roller 9 to generate an auxiliary conveyance force. The upper end of the pressing spring 24 is in pressure contact with the upper lid 25 fixed to the upper portion of the case 22.

In the above cartridge, when the needle plate 21 in the cartridge is exhausted, it is necessary to discard the entire cartridge, and for example, the pressing spring and the case housing this are wasted. However, there is a problem that the cost will increase as well as the increase in cost.

As a means for solving this, for example, the cartridge is divided into a needle case accommodating only the needle plate 21 and a spring case portion accommodating the pressing spring 24 and the pressing plate 23. It is possible to make it reusable.

Further, in order to reduce the running cost of the cartridge, there has been proposed an apparatus in which the structure of the cartridge is refilled only with the binding needle as shown in FIG.

In FIG. 17, the cartridge includes an upper case 22a whose lower side is open and a lower case 2 which is rotatably supported by a support shaft so as to open and close the opening.
2b, and the lower case 22b has an engagement hole 22e that is engageable with the protrusion 22d provided on the upper case 22a.

When there are no staples left in the cartridge, the lower case 22b is opened to the chain line position, and a simple needle plate bundle 21b in which a plurality of needle plates 21 are adhered by a weak adhesive force is loaded in the lower case 22b. By binding the needle plate bundle 21b again, the needle plates 21 can be exchanged.

[0017]

However, as shown in FIG.
3, in the cartridge divided into FIG. 14,
Since each needle plate 21 of the needle plate bundle 21b needs to have a weaker conveying force than the conveying force of the feed roller 9 (FIG. 4), the quality is not stable and the needle plate 2 in the needle case is not stable.
1 may come apart, especially the needle plate bundle 21.
When an impact is applied to b, the needle plate bundle 21b has a problem that it is likely to be scattered.

Further, the cartridge shown in FIG. 15 has a problem that there is an uncertain factor when the needle plate 21 is conveyed, depending on the setting of the needle plate bundle 21b by the user.

According to the present invention, the needle plate bundle accommodating means for accommodating the needle plate bundle composed of a plurality of needle plates and the needle transport assisting means accommodating means for accommodating the needle transport assisting means are made impossible. It is an object of the present invention to provide a sheet bundle binding device in which problems such as prevention of deviation of the staple plate bundle in the binding needle storage means are solved.

[0020]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and stacks a plurality of needle plates (11) formed by connecting a plurality of binding needles (11a) in a horizontal row. Store the needle plate (11) from the transport side (11A) 1
The needle plate bundle storage means (12) conveyed one by one, and the needle plate bundle (11B) in the needle plate bundle storage means (12) that can be detachably attached to and separated from the needle plate bundle storage means (12). The needle transport assist means accommodating means (13) has a needle transport assist means (14) for urging the transport surface side (11A) to apply an auxiliary transport force, and is attached to and detached from the binding device body (117A). Free binding needle storage means (12, 1
3) and a needle conveying means (9) which is provided in the binding device body (117A) and conveys the needle plate (11) in the needle plate bundle accommodating means (12) from the conveying surface side (11A), A sheet bundle binding device (117) comprising: a forming unit (10) that binds a sheet bundle by deforming the binding needle (11a) of the needle plate (11) transported by the binding needle transporting means (9). The needle plate bundle accommodating means (12) includes two vertexes (11d) of the four vertexes on the transport surface side (11A) of the needle plate bundle (11B) other than the transport direction, and an opposite side to the transport surface side (11A). It is characterized by having holding means (12d, 12b, 12c) for restraining at least two tops (11b, 11c) of the four tops, respectively.

Further, the needle conveyance assisting means accommodating means (1
3) is characterized in that the needle plate bundle accommodating means (12) has an engaging portion that can be engaged and disengaged.

The needle plate bundle accommodating means (12)
The inner needle plate bundle (11B) is formed by adhering a plurality of needle plates (11) with an adhesive force weaker than the conveying force of the binding needle conveying means (9).

Further, the binding device body (117A) is
It is characterized by having a driving section (7, 15) for sandwiching the sheet bundle and a forming section (10) for deforming the binding needle (11a) of the conveyed needle plate (11) to bind the sheet bundle. To do.

[0024]

Based on the above construction, the binding needle storage means (12, 1)
The needle plate (11) on the conveying surface side (11A) in 3) is
The sheet is conveyed to the forming unit (10) that binds the sheet bundle by the staple feeding unit (9).

When there is no binding needle (11a) in the needle plate bundle storage means (12), the binding needle storage means (12,
After 13) is removed from the binding device main body (117A), the needle transport assisting means storing means (13) that stores the needle transporting assisting means (14) is removed from the needle plate bundle storing means (12). Will be divided.

The needle transport assisting means accommodating means (13) is mounted on the new needle plate bundle accommodating means (12) accommodating the needle plate bundle (11B) and is reused. Needle plate bundle (11B) in the needle plate bundle storing means (12)
Of the four apexes on the conveying surface side (11A), at least two apexes (11b, 11b) opposite to the conveying direction and at least two apical portions (11b, 11b, 4a on the surface opposite to the conveying surface side (11A)). 1
1c) is held and restrained by the holding means (12d, 12b, 12c) of the needle plate bundle storing means (12).

As a result, the binding needle storage means (12, 1)
Although 3) can be divided into a needle plate bundle storage means (12) and a needle conveyance assist means storage means (13),
Needle transport assist means storing means (13), needle plate bundle (1
1B) prevents back even if there is a shock,
It is possible to perform stable conveyance of the needle plate (11) and binding work.

Since the operator does not load the binding needle (11a) into the needle plate bundle accommodating means (12), uncertainties associated with loading the binding needle (11a) are reduced and a stable needle plate ( The transportation of 11) can be performed.

The needle plate bundle storing means (12, 1)
3) is separable, and the needle conveyance assisting means storing means (1
3) and the needle conveyance assisting means accommodating means (13) which is housed therein are reusable with respect to the plurality of needle plate bundle accommodating means (12), the binding needle accommodating means (1)
2, 13) running cost is reduced.

The reference numerals in parentheses are shown for reference to the drawings and do not limit the structure of the present invention.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the sheet bundle binding apparatus of the present invention is mounted on a sorter as a sheet post-processing apparatus connected to a copying machine will be described below with reference to the drawings.

In FIGS. 6 and 7, 101 is a sorter for sheet post-processing, which is a pair of opposed side plates 102,
Airframe 106 having base 103 and cover 105
And a plurality of bins B (B1 to Bn), and a bin unit 109 that moves up and down.

Further, the machine body 106 has a carry-in port 11 into which the sheet P discharged from the image forming apparatus (copier) M is introduced.
0, and a carry-in roller pair 111 in the vicinity thereof.
A non-sort path 112 is provided downstream of the carry-in roller pair 111.
Also, a sort path 113 branched from the non-sort path 112 is arranged.

The non-sorting path 112 is arranged in a substantially horizontal direction, and a non-sorting paper discharge roller pair 115 serving as a non-sorting paper discharge port is arranged downstream thereof. Further, the sort path 113 is extended downward, and a sort paper discharge roller pair 116 serving as a sort paper discharge port is arranged downstream thereof, and the sheet bundle is further provided at a position related to the sort paper discharge roller pair 116. A binding device (stapler) 117 is arranged.

The stapler 11 of the cover 105 is
As shown in FIG. 6, the stapler door 1
18 and a door switch S12 are provided for the stapler door 118 when the stapler 117 is replaced with a staple.
Is opened and closed.

Further, the opening / closing of the stapler door 118 is detected by the door switch S12. A manual staple button S13 is arranged on the upper part of the cover 105, and the operation of this button S13 enables setting of the staple mode. A display L1 including a lamp, an LED and the like is arranged in the vicinity of the button S13 so that it can be easily determined that the button S13 has been pressed down.

Further, as shown in detail in FIGS. 6 to 8, the bin unit 109 includes a frame 136 composed of an inclined portion, a vertical portion and a horizontal portion, and a front side and a rear side of the tip of the inclined portion of the frame 136. A bin unit housing 140 configured by a vertical frame 37 that is vertically provided in the container and a bin cover 139 supported by the vertical frame 137.
As shown in FIG. 8, on the front side of the bin unit housing 140, an alignment reference plate 141 with which one edge of the sheet P abuts is provided.

Further, the bin unit 109 includes a large number of bins B.
(B _{1 to} B _n ), a matching rod 143 swinging about the central axis 142 is provided, and the bin B has engaging plates on both sides of the tip as shown in detail in FIG. 146 is formed, and the engagement plate 146 engages with a support plate (not shown) provided inside the vertical frame 137 to support the front end side of the bin B.

Roller support pins 147 are fixed to both sides of the base end of the bin B, and a bin roller 149 is rotatably supported by the pin 147. Furthermore, in the bin B, the alignment rod 143 is longer than the rotation distance of the alignment rod 143 at a predetermined distance from the movement center shaft 142, and
A long hole 150 that is sufficiently wider than the diameter of 3 is opened,
The base end portion B _a of the bin B stands upright with respect to the sheet storage surface B _b , and as shown in FIGS. 6 to 8, the tip end is inclined upward with respect to the machine body 106 and kept at a predetermined angle. The sheet P on the bin B slides on the sheet storage surface B _b and its rear end abuts on the base end portion B _a , so that the front-back direction is aligned.

In the bin B, the bin roller 149 is inserted into the guide plate 127 of the machine body 106 so as to project from the long groove 52 (see FIG. 8) provided in the base end portion of the bin unit housing 140, and is placed at the bottom. the bin roll 149n bin B _n is placed on the lower guide rollers on the 126 and bin roll 149 of the bin B 1 level upper than the lowermost bin B _n is mounting on the bin roll 149n of the lowermost bin B _n The bin roller 149 of the upper bin B is supported by the bin roller 149 of the lower bin B such that the bins B _{1 to} B ₁
The base end sides of _n are supported by the bin unit housing 140, respectively.

Further, transmission type in-bin sheet detection sensors S3, S are provided above and below the base end of the bin unit 109, respectively.
3 are arranged (see FIG. 1), and when all the sheets are taken out from the bin unit 109, the in-bin sheet detection sensors S3 and S3 detect the absence of sheets, and determine the end of one operation.

Also, as described above, the bin unit 109
Is provided with an alignment rod 143, and the alignment of the sheet by the alignment rod 143 will be described below with reference to FIGS. 8 and 9.

A supporting plate 160 is provided below the base end of the frame 136 of the bin unit 109.
A lower arm 161 is rotatably supported by 0, and one of the lower arms 161 is rotatably supported by a lower rotary shaft (not shown) projecting upward from the support plate 160. The lower end of the moving center shaft 142 is fixed to one of the lower arms 161 coaxially with the lower rotation shaft of the lower arm 161, and the lower end of a matching rod 143 is fixed to the other, and the upper end of the aligning rod 143 is fixed. Since the portion and the upper end of the movement center shaft 142 are coupled by the upper arm 162, the alignment rod 143 and the movement center shaft 142 are configured integrally with the upper arm 162 and the lower arm 161.

Since the moving center shaft 142 is rotatably supported by the upper rotating shaft 163 projecting downward from the bin cover 139, the aligning rod 143 moves the moving center shaft 142.
It is kept swingable around. Furthermore, the lower arm 16
1, a fan-shaped gear 165 having a center of rotation coinciding with the center of movement of the lower arm 161 is fixed, and a matching rod drive motor 166 is arranged below the support plate 160. Output gear 67 and fan gear 165
Since the and are meshed, the alignment rod 143 can be swung by the rotation of the motor 166.

Thus, the aligning rod 143, when aligning the sheet P, moves from the home position (not shown) to the sheet P.
To the width-shifting position 143a determined according to the size of the sheet, contacting the edge of the sheet, cooperate with the alignment reference plate 141 to align the sheet, and further move to the standby position 143b to move to the next position. It waits for the alignment of the sheets.

The matching rod drive motor 66 is a stepping motor, and the matching rod 143 is driven by a given number of pulses.
Is determined.

A light shield plate 69 is fixed to the lower arm 161 as shown in FIG. 8, and the light shield plate 69 moves together with the lower arm 161 to cause the frame 13 to move.
The alignment rod home position sensor S9 fixed to 6 is turned on / off.

Further, the stapler 117 has a stapler moving part 188 (see FIG. 10) for driving the stapler 117 so as to move it between the binding position 117a and the retracted position 117b shown in FIG. Is provided. As shown in FIGS. 10 to 12, the stapler moving portion 188 has a shaft 179 erected from the machine body frame 102a, and the swinging substrate 180 is swingably supported by the shaft 179. ing.

A staple board 181 is fixed to the swing board 180, and a staple 117 is mounted on the staple board 181. A gear box 183 having a reduction gear group 182 built therein is attached to the machine body frame 102a.
3, a stapler swing motor 185 is arranged. The gear 186 fixed to the output shaft of the staple swing motor 185 is the input gear 182 of the reduction gear group 182.
a geared with the output gear 182 of the reduction gear group 182.
A link disc 187 is fixed to b.

The outer circumference of the link disc 187 is shown in FIG.
As shown in FIG. 7, cam portions 187a and 187b are provided to face each other. When the stapler swing motor 185 is operated by these cam portions 187a and 187b,
The stapler positioning sensor S6 is turned on / off.

In the vicinity of the outer peripheral edge of the link disc 187,
A shaft 187c is provided upright. A link arm 189 is rotatably connected to the swing substrate 180 in a substantially horizontal state. A shaft 189a is erected on the link arm 189 and a long hole 189b is provided. The shaft 187c is fitted into the elongated hole 189b, and the spring 19 is interposed between the shaft 187c and the shaft 189a.
0 is stretched.

A sensor operating arm 191 made of resin or the like is rotatably supported near the shaft 179 as shown in FIG. One end 191a of the sensor operating arm 191 abuts on one end 180a of the rocking substrate 180, and the other end 191b thereof is connected to the swivel plate operating position sensor S.
It is in contact with 7.

Further, as shown in FIG. 11, the oscillating board 180 is provided with a stapler paper sensor S via a mounting base 192.
8 is provided, and this sensor S8 is configured by a transmissive sensor having a U-shape in a side view and including a light emitting portion and a light receiving portion.

The stapler 117 moves to the binding position 117a in the bin moving area by the stapler moving unit 188 when binding the sheets, and the retracted position 117b that allows the movement of the bin B after finishing the binding of the sheets. Move to and wait here.

The stapling portion will be described with reference to FIGS. 4 and 5, and the description thereof will be omitted. The cartridge (binding needle accommodating means) 8 which is a feature of the present invention will be described.

The cartridge 8 includes a needle case (needle plate bundle accommodating means) 12, a spring case (needle conveyance assisting means accommodating means) 13 which can be engaged with and disengaged from the needle case 12, as will be described later, and the spring case 13. It has a pressure spring (conveyance assisting means) 14 and the like which is installed inside.

In FIGS. 1, 2, and 3, the needle plate 1
1 is composed of a plurality of binding needles 11a (FIG. 2) bonded and connected in a horizontal row.
Are stacked and stored in a needle case (needle plate bundle storing means) 12.

The plurality of needle plates 11 housed in the needle case 12 are bonded to each other with an adhesive or the like to form a needle plate bundle 11B. This needle plate 11
The adhesive force between them is smaller than the carrying force of the sending roller 9, and when the carrying force of the sending roller 9 acts, the needle plate 11 on the sending roller 9 side is
The needle plate 11 is transported away from the other needle plate 11.

The needle case 12 can support and guide the needle plate 11 on the transport surface side 11A (lower side in the figure) by forming the winding portion 12A on three ridge edges of the four ridge edges excluding the transport side. It has become. On the bottom side of the needle case 12,
An opening 117B is formed in the stapler body 11
The feed roller 9 of 7A comes into contact with the needle plate 11 in the needle case 12 through the opening 117B to bring the needle plate 11 into contact.
Carry out.

A transport port 12C through which the lowest needle plate 11 is delivered is formed on the front side of the needle case 12. A notch 12a is formed in the lower rear portion of the needle case 12 to avoid interference with a stopper portion of a spring case 13 described later.

FIG. 1A shows the needle plate bundle 11B in the needle case 12, which is to be conveyed in the direction of the arrow. On the conveying surface side (lower side) of the needle case 12, a holding portion 12d for holding and constraining the two apex portions 11d on the opposite side of the conveying direction among the four apex portions of the conveying surface side 11A of the needle plate bundle 11B. It is provided. Further, on the upper side of the needle case 12, holding portions 12b and 12c for holding and restraining the upper four peaks of the needle plate bundle 11B are provided.

The top of the needle plate 11 on the upper side is not necessarily limited to the four apices, but at least two apices, for example, two opposing apices 11b (or 11c) may be retained. In the case where the top portion held is the two top portions 11b, it is held by the holding portion 12b of the needle case 12,
In the case of the two tops 11c, they are held by the holding portions 12c of the needle case 12 facing each other.

As described above, by providing the needle case 12 with the holding portions 12d, 12b, 12c for restraining the required top portions 11d, 11b, 11c of the eight top portions of the needle plate 11, the inside of the needle case 12 is provided. Of the needle plate bundle 11B,
For example, it is possible to prevent variations due to impact or the like, and defective conveyance of the needle plate 11 due to the variations.

Next, the spring case 13 corresponds to the needle case 1 described above.
The elastic plate 13d is formed so that it can be fitted into the second plate 2 by forming slits in the pair of side plates facing each other. Engaging claws (engaging portions) are provided at the bottom of each elastic plate 13d.
13a are formed respectively, and when the spring case 13 is attached to the needle case 12, the spring case 13 is prevented from coming off.

A pressing plate 15 for supporting the lower part of the bundle of needle plates is provided in the spring case 13 so as to be vertically movable. The pressing plate 15 is removed by a stopper portion 13b formed in the spring case 13. It has been stopped.

Between the boss 13c provided on the back surface of the upper plate of the spring case 13 and the pressing plate 15, the needle case 12 is provided.
A pressing spring (needle transportation assisting means) 14 for urging the inner needle plate 11 toward the transportation surface side (lower side in the drawing) is provided. When the cartridge 8 is attached to the sheet binding device 117, the pressing spring 14 urges the needle plate 11 on the conveying surface side in the needle case 12 toward the feed roller 9, and the needle plate 11 by the feed roller 9 is urged. Auxiliary transportation force is applied to the transportation of.

When the sheet bundle binding device 117 having the cartridge 8 configured as described above is arranged in the sorter 101 shown in FIGS. 6 and 7 and the sheet bundle discharged to the bin unit 109 is bound, the cartridge 8 is formed. Inner needle plate 1
1 gradually decreases. ． When the needle plate 11 inside the sheet is lost, the operator removes the cartridge 8 from the sheet bundle binding apparatus 117.

The removed empty cartridge 8 is divided into the needle case 12 and the spring case 13 by removing the engaging claw 13a of the spring case 13 from the needle case 12. The pressing spring 14, the pressing plate 15, and the spring case 13 in which they are installed are attached to a new needle case 12 in which the needle plate 11 is loaded and reused.

As described above, the needle case 12 accommodating the needle plate 11 and the needle case 12 in which the pressing spring 14 is housed and which can be freely engaged with and disengaged from the needle case 12 are configured to be separable. In the cartridge 8, the needle plate bundle 11B is formed by adhering a plurality of needle plates 11 to each other.
Of the 8 tops, the 2 tops 11d on the side opposite to the transport direction of the transport side 11A and at least the 2 tops 11b (or 2 tops 11c) of the 4 tops on the side opposite to the transport side 11A.
Is held by being held by the holding portions 12d, 12b, 12c of the needle case 12, the deviation of the needle plate bundle 11B in the needle case 12 due to, for example, impact is prevented, and the needle plate 11 is removed from the cartridge 8. It can be stably transported.

[0070]

As described above, according to the present invention,
Needle plate bundle storing means for storing only the needle plate bundle,
In the sheet bundle binding device, which is detachably provided with binding needle storage means that is detachable and is separable into needle transport auxiliary means storage means for imparting a transport force to the needle plate bundle, In the accommodating means for accommodating the needle plate bundle, out of the four apexes on the conveying surface side of the eight apices of the needle plate bundle, the two apices on the opposite side to the conveying direction and the four apices on the opposite side to the conveying surface side Since the holding portion for restraining at least two top portions of the needle plate bundle is securely restrained, the needle plate bundle is securely restrained and the needle plate bundle is prevented from being scattered and the needle plate is not conveyed properly, that is, the sheet bundle is not bound properly. You can

Further, since it is necessary for the operator to load the staples into the needle plate bundle accommodating means, it is possible to prevent an uncertain factor due to defective loading and defective transport of the needle plates.

Further, the binding needle accommodating means can be divided into the needle plate bundle accommodating means and the needle transport assisting means accommodating means, so that the empty needle plate bundle accommodating means is loaded with the needle plate bundle. When replacing with a new needle plate bundle accommodating means, the needle conveying assisting means accommodating means and the needle conveying assisting means installed therein can be reused, and the running cost of the binding needle accommodating means can be reduced. It can be reduced.

[Brief description of drawings]

1A is a side view of a cartridge of a sheet bundle binding device according to an embodiment of the present invention, and FIG. 1B is a perspective view of a needle plate bundle stored in the cartridge.

FIG. 2 is a perspective view of a cartridge of the sheet binding device according to the embodiment.

FIG. 3 is a perspective view of a cartridge of the sheet bundle binding device according to the embodiment.

FIG. 4 is a plan view of a general sheet bundle binding device with a removable cartridge.

FIG. 5 is a side view of a general sheet bundle binding device with a removable cartridge.

FIG. 6 is a perspective view of a sheet post-processing device to which a sheet bundle binding device can be applied.

FIG. 7 is a side view of a sheet post-processing device to which a sheet bundle binding device can be applied.

FIG. 8 is a perspective view of a bin unit portion of the sheet post-processing device.

FIG. 9 is a plan view of a bin unit portion of the sheet post-processing device.

FIG. 10 is a side view of a sheet bundle binding device portion of the sheet post-processing device.

FIG. 11 is a plan view of a sheet bundle binding device portion of the sheet post-processing device.

FIG. 12 is a plan view of a sheet bundle binding device driving unit of the sheet post-processing device.

FIG. 13 is a side view of a conventional cartridge.

FIG. 14 is a perspective view of a conventional cartridge.

FIG. 15 is a perspective view of another conventional cartridge.

[Explanation of symbols]

7 Magazine (needle driving part) 8 Cartridge 8 (binding device for stapling) 9 Sending roller (binding device for stapling) 10 Forming part 11 Needle plate 11a Stitching needle 11B Needle plate bundle 11b, 11c Opposite to the conveying surface side of the needle plate bundle Side top part 11d Top part on the conveying surface side of the needle plate bundle 12 Needle case (needle plate bundle storing means) 12b, 12c Holding part on the opposite side to the conveying surface side of the needle case 12d Holding part on the conveying surface side of the needle case 13 Spring Case (needle conveyance assisting means accommodating means) 13a Engagement claw (engagement portion) 14 Pressing spring (needle conveyance assisting means) 15 Anvil (needle driving part) 101 Sorter (sheet post-processing device) B Bin (sheet receiving tray) M Copy Machine (image forming apparatus) 117 stapler (sheet bundle binding apparatus) 117A stapler main body

Claims (5)

[Claims] 1. A needle plate bundle accommodating means for accommodating a plurality of needle plates, each of which is formed by connecting a plurality of staples in a row in a row, and accommodating the needle plates one by one from the conveying surface side, and the needle plate. Needle transport assisting means which is detachable from the bundle storing means and can be divided, and which has a needle transport assisting means for applying an auxiliary transporting force by urging the needle plate bundle in the needle plate bundle storing means toward the transport surface side. A binding needle storage unit that includes a storage unit and is detachable from the binding device body, and a needle transport unit that is provided in the binding device body and transports the needle plate in the needle plate bundle storage unit from the transport surface side, A sheet bundle binding device comprising: a forming unit configured to deform a binding needle of a needle plate transported by the binding needle transporting unit to bind a sheet bundle, wherein the needle plate bundle storing unit is located at the top of the needle plate bundle. A sheet bundle having holding means for respectively restraining two tops of the four tops on the conveyance surface side other than the conveyance direction and at least two tops of the four tops on the side opposite to the conveyance surface side. Binding device. 2. The sheet bundle binding device according to claim 1, wherein the needle conveyance assisting means accommodating means has an engaging portion that is detachable from the needle plate bundle accommodating means. 3. The sheet bundle binding device according to claim 1, wherein the needle plate bundle in the needle plate bundle storing means is formed by adhering a plurality of needle plates with an adhesive force weaker than a conveying force of the binding needle conveying means. . 4. The sheet bundle binding device according to claim 1, wherein the binding device body has a driving portion that holds the sheet bundle. 5. A sheet post-processing apparatus having the sheet bundle binding apparatus according to claim 1 and at least one sheet tray for storing a plurality of sheets after image formation.