JP3423462B2 - Sheet material binding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material binding device.

[0002]

2. Description of the Related Art Conventionally, there has been known a sheet material bundle binding apparatus as a sheet post-processing apparatus for performing a jogger stack process and a staple process on a sheet material discharged from an image forming apparatus such as a copying machine or a printer. There is. As shown in FIG. 4, a conventional sheet material bundle binding device is provided with a sheet material discharge / conveyance path inlet from an image forming apparatus (not shown) such as a copying machine.
A sheet discharge sensor 36, an entrance roller 1, and a separation claw 8 are provided, and the separation claw 8 separates a sheet material conveyed in the direction of the discharge tray 12 and a sheet material conveyed in the direction of the stapling device 11. To be Then, the discharge tray 12
The upper conveyance roller 2, the paper discharge sensor 38, the discharge roller 3, the shift roller 7, the paper surface lever 1 are provided in the sheet material conveyance path in the direction.
3, a paper surface sensor 33, and the like are arranged, and the lower conveyance roller 4, the paper ejection sensor 37, the paper feed roller (brush roller) 6 are provided in the sheet material conveyance path toward the stapling device 11.
Are arranged. The staple device 11 is provided below the staple tray 51. The staple tray 51 has a jogger fence 9 for aligning sheet materials (alignment of end surfaces), a return roller 5, and a jogger fence 9. A discharge belt 10 for discharging a stapled sheet bundle and a rear end fence 19 for abutting the sheet bundle are arranged at the rear position of the sheet bundle.

[0003]

By the way, as described above, the above-described conventional sheet material binding device binds the received sheet material to the sheet discharge tray 12 without post-processing, and the received sheet material. The sheet material conveyance path is configured differently in the staple mode in which the material is subjected to the jogger stack processing and the staple (binding) processing and discharged to the paper discharge tray 12. That is, in the above-described conventional sheet material binding device, in the shift mode, the sheet material is discharged by the upper transport roller 2 and the discharge roller 3 into the sheet discharge tray 1.
2 is discharged directly to the upper side of the sheet 2, but in the staple mode, the lower conveying roller 4 and the paper feeding roller 6 temporarily
The sheet material is conveyed to the stipple tray 51, and after the jogger stack processing by the jogger fence 9 and the stipple processing by the stipple device 11 are performed on the stipple tray 51, a sheet discharge tray as a sheet material bundle. 12 is discharged onto. As described above, in the above-described conventional sheet material binding device, two different types of sheet material conveying paths, that is, the sheet material conveying path in the shift mode and the sheet material conveying path in the staple mode, are configured. There is a problem that the structure becomes complicated and the apparatus becomes large, and a large installation space is required for the image forming apparatus, resulting in high cost.

The present invention has been made in view of the above points, and an object thereof is to provide a small and inexpensive sheet material bundle binding apparatus capable of simplifying the configuration and saving space. It is in.

[0005]

Means for Solving the Problems The present invention, in order to solve the problems described above, the sheet over preparative conveying means for conveying the sheet material discharged from the image forming equipment onto the discharge tray, the sheet conveying means After the sheet material is discharged onto the output tray by
Has a job <br/> Gar stack unit having a fence for stacking and jogger an end and a stipple means for stapling a sheet bundle aligned by the jogger stack means, fence of the jogger stack means
By opening the stack , the sheet material bundle stapled by the stapling means is dropped onto the discharge tray and stacked.
And, in the stacked sheets member bundle on, and discharged repeatedly following sheet by the sheet conveying means, and configured to form the next sheet bundle by the jogger stack means.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the sheet material bundle binding apparatus of the present invention includes a sheet conveying means 200 for receiving the sheet material 100 discharged from a processing device such as an image forming apparatus (not shown), and the sheet conveying means 200. It has a jogger stacking means 400 for stacking and jogging the sheet material 100 discharged onto the paper discharge tray 300, and a stippling means 500 for stippling the sheet material bundle 100 ′ aligned by the jogger stacking means 400. There is.

In FIG. 1A, the sheet material 100 conveyed from the main body side of the image forming apparatus such as a copying machine is carried into the sheet material bundle binding apparatus side by the sheet conveying means 200, and is placed on the sheet discharge tray 300. It is discharged as it is. A jogger fence 401 of the jogger stacking means 400 is installed on the paper discharge tray 300 so as to operate in the direction of arrow a in FIG. The sheet material 100 discharged onto the sheet discharge tray 300 has its upstream end (rear end) in the sheet discharge direction stacked on the jogger fence 401, and its downstream end (tip) in the sheet discharge direction is the sheet discharge tray 3.
00 is stacked on top. Here, jogger fence 4
The sheet 01 is opened and closed in the direction of arrow a every time the sheet material 100 is discharged to align the sheet materials 100, and stacks a prescribed number of sheet materials 100 (sheet material bundle 100 ′).

In this way, the sheet material bundle 100 'stacked on the paper discharge tray 300 is stapled by the stapling means 5.
00 is stapled. When the jogger fence 401 is opened, the stapled sheet bundle 100 ″ has its rear end dropped onto the sheet ejection tray 300, and is sequentially stacked on the sheet ejection tray 300 as shown in FIG. 1B. At this time, the rear end portion of the sheet material bundle 100 ″ dropped on the paper discharge tray 300 is stacked on the sheet material 100 to be discharged next, and the staple sheet stack 100 ′ is stapled. In order not to disturb the operation, the rear end portion of the sheet material bundle 100 ″ dropped on the paper discharge tray 300 is moved downward by the sheet material bundle pressing means (paddle) 600 as shown in FIG. It can be pressed down.

The sheet discharge tray 300 descends in the direction of arrow b in FIG. 2 every time the sheet material bundle 100 ′ is stacked thereon, whereby the sheet material bundle stacked on the sheet discharge tray 300. The upper surface of 100 ″ serves as an output tray for the next stack of sheet material 100 ′.
That is, the sheet material bundle 100 ″ stacked on the uppermost part of the sheet discharge tray 300 in this embodiment always functions as the sheet discharge tray of the sheet material bundle 100 ′ to be stacked next.

As described above, according to the present embodiment, the sheet material 100 passes through the same conveying path in both the shift mode and the staple mode, and the sheet alignment (jogger stack) in the staple mode is performed. Further, stapling is performed directly on the paper discharge tray 300, and the stapled sheet bundle 100 ″ can be directly stacked on the paper discharge tray 300 without passing through another paper discharge path. It is possible to provide a sheet material bundle binding device that can be simplified, saves space, and is inexpensive.

In the staple mode for binding the sheet bundle 100 ', the paddle 600 rotates intermittently to press the rear end portion of the sheet bundle 100 ", but the discharge tray In the shift mode in which the sheet material 100 is sequentially discharged onto the sheet 300, the paddle 600 continuously operates to hit the discharged / stacked sheet material 100. That is, in the shift mode, the sheet conveying unit 200 is operated. Sheet material 10 discharged by
0 is directly stacked on the paper discharge tray 300. At this time, the jogger fence 401 is facing the maximum open position, and the discharged sheet material 100 is the jogger fence.
It is designed not to be stacked on the 401 . Then, the sheet material bundle 100 ′ discharged and stacked on the paper discharge tray 300 is continuously rotated by the paddle 6
By 00, it is struck toward the upstream side in the paper discharge direction. As a result, in this shift mode, the paper alignment accuracy of the sheet material 100 in the sheet conveying direction is improved, and thus the binding accuracy for the sheet material bundle 100 ′ in the subsequent staple mode is also improved.

By the way, in the above stipple mode,
The paddle 600 is intermittently rotated to press the rear end portion of the sheet material bundle 100 ″ to prevent the stapling means 500 from interfering with the operation. However, the stapled sheet material bundle 100 ″ is placed on the discharge tray 300. When the stacking amount of the sheet becomes large, the sheet material bundle 10
Since the rear end portion of 0 ″ expands, the effect of avoiding the operation obstruction of the stapling means 500 due to the pressing of the rear end portion of the sheet bundle of the paddle 600 becomes uncertain. Therefore, in this embodiment, as shown in FIG. In addition, the inclination angle β of the sheet stacking surface on the upstream side of the sheet discharge direction of the sheet discharge tray 300 is formed to be larger than the inclination angle α of the sheet stacking surface on the downstream side of the sheet discharge direction of the sheet discharge tray 300. According to the 300, the stacking amount of the stapled sheet bundle 100 ″ on the discharge tray 300 increases, and even if the rear end portion of the sheet bundle 100 ″ expands due to the presence of the staples, the paddle 6
Since the rear end portion of the sheet material bundle 100 ″ can be pressed further downward by intermittent rotation of 00, the stapling means 5
It is possible to surely avoid the operation interruption of 00.

[0013]

As described above, according to the present invention, in claim 1, the sheet material passes through the same conveying path in both the shift mode and the staple mode, and the sheet alignment in the staple mode is performed. (Jogger stack) and stipple (stitching) are performed directly on the paper output tray, and the stapled sheet bundle can be stacked on the paper output tray without passing through another paper output path. Reduction, space saving, and cost reduction can be achieved.

According to the second aspect of the present invention, since the rear end portion of the sheet material bundle dropped on the sheet discharge tray is pressed downward by the sheet material bundle pressing means (paddle), the stack of sheet materials to be discharged next is stacked. It is possible to avoid the operation and the operation interference of the stapling operation of the stacked sheet material bundle.

In the third aspect, since the sheet material bundle discharged and stacked on the sheet discharge tray is struck toward the upstream side in the sheet discharge direction by the continuously rotating paddles, the sheet material in the sheet conveying direction is conveyed. You can improve the paper alignment accuracy,
It is possible to improve the binding accuracy for the sheet material bundle in the subsequent staple mode at the same time.

According to the present invention, the rear end of the sheet bundle dropped onto the discharge tray can be pressed and pushed by changing the operation of one paddle, so that the apparatus can be further simplified. In addition, space saving and cost reduction can be achieved.

According to the present invention, the inclination angle of the sheet stacking surface of the sheet discharge tray upstream of the sheet discharge direction is larger than the inclination angle of the sheet stacking surface of the sheet discharge tray upstream of the sheet discharge direction. , Even if the stacking amount of stapled sheet bundle on the discharge tray increases and the rear end of the sheet bundle expands due to the presence of stipple needles, the rear end of the sheet bundle may be moved by the intermittent rotation of the paddle. It can be pressed further downward, and the obstruction of the operation of the stapling means can be reliably avoided.

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment of a sheet material bundle binding device of the present invention.

FIG. 2 is a schematic perspective view of an embodiment of the sheet bundle binding device of the present invention.

FIG. 3 is a side view of a sheet discharge tray in the embodiment of the sheet material binding device of the present invention.

FIG. 4 is a schematic configuration diagram of a conventional sheet material binding device.

[Explanation of symbols]

100 sheet material 100 'sheet material bundle 100 "stapled sheet material bundle 200 sheet conveying means 300 sheet discharge tray 400 jogger stacking means 401 jogger fence 500 stipple means 600 sheet material bundle pressing means (paddle) α sheet of discharge tray Inclination angle of the sheet stacking surface on the downstream side in the discharge direction β Inclination angle of the sheet stacking surface on the upstream side in the sheet discharge direction of the discharge tray

Claims (5)

(57) [Claims] The method according to claim 1 sheet material discharged from the image forming equipment discharge
A sheet over preparative conveying means for conveying the paper tray, and jogger stack unit having a stack and jogger fence the rear end <br/> of the sheet discharged to the paper discharge tray by the sheet conveying means, the And a stippling means for stippling the bundle of sheets aligned by the jogger stacking means, and opening the fence of the jogger stacking means.
As a result, the sheet material bundle stapled by the stapling means is dropped onto the paper discharge tray and stacked.
The serial stacked sheets member bundle on, and discharged repeatedly following sheet by the sheet conveying means, the sheet material bundle stapling apparatus characterized by forming a next sheet bundle by the jogger stack means . 2. A sheet material bundle pressing means for pressing the upstream end of the sheet material bundle stipulated by the stapling means in the sheet discharging direction at the sheet material discharging portion. Item 1. A sheet material bundle binding device according to item 1. 3. When stacking sheet materials discharged onto a sheet discharge tray by the sheet conveying means, a sheet material slamming means for slamming an end portion of the sheet material on an upstream side in a sheet discharge direction is provided. The sheet material bundle binding apparatus according to claim 1, wherein the sheet material bundle binding apparatus is provided at a material discharge portion. 4. The sheet material bundle pressing means according to claim 2 and the sheet material pressing means according to claim 3 are continuously rotated when the sheet materials are stacked and intermittently rotated when the sheet material bundle is stapled. The sheet material bundle binding device according to claim 1, wherein the device is constituted by one paddle. 5. An inclination angle of a sheet stacking surface upstream of the sheet discharge direction of the sheet discharge tray is formed to be larger than an inclination angle of a sheet stacking surface downstream of the sheet discharge direction of the sheet discharge tray. The sheet material bundle binding device according to claim 1.