JPH10310317A - Paper post-processing equipment - Google Patents

Abstract

(57) [Problem] To provide a sheet post-processing apparatus capable of more reliably flattening punch dust in a punch dust collecting box and improving a punch dust accumulation rate. SOLUTION: A timing belt 9 as a punch dust flattening mechanism between a punching unit 5 and a punch dust collecting box 6, a blade 10 fixed to the timing belt 9, and a forward / reverse rotatable motor for driving the timing belt 9 are provided. 11 is provided. Then, the blade 10 is reciprocated at right angles to the falling direction of the punch dust 12, thereby stirring the falling direction of the punch dust 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, such as a copying machine or a printer, which receives a copied sheet discharged from an image forming apparatus and outputs the copied sheet. The present invention relates to a paper post-processing device for performing processing, and in particular,
The present invention relates to a sheet post-processing apparatus including a punching unit provided in a sheet transport path and a punch dust collecting box.

[0002]

2. Description of the Related Art Sorting paper with a sorter bin,
In addition to stapling a bundle of paper with a staple unit, a punching unit is provided in the paper transport path to punch filing holes in the paper, and punch waste generated by the punching operation of the punching unit. 2. Description of the Related Art A paper post-processing apparatus provided with a punch waste collection box for storing waste paper waste) is widely known. When the punch dust generated in the punching unit is stored in the punch dust collection box, the punch dust accumulates only at the point where the punch dust falls, and hardly accumulates at locations away from the drop point, and the punch dust falls. It has a conical shape with the top directly below the point.

[0003] In such a state, the accommodating ability of the punch dust is reduced, and the top of the mountain is spilled from the punch dust collecting box. Therefore, conventionally, flattening of punch waste has been performed in a punch waste collection box.

FIG. 7 is a view showing a swing mechanism of a punch waste collection box. This mechanism is disclosed in Japanese Utility Model Publication No. 4-23884, and is used for driving the hammer 22 through the arm 23 and the hammer 22 which knocks the punch waste collection box 21 in order to flatten the punch waste. Electromagnetic solenoid 24
After the punch, the arm 23 is pushed down by the excitation of the electromagnetic solenoid 24, and when the excitation of the solenoid 24 stops, the hammer 22 knocks the punch dust collection box 21 by the restoring force of the spring 25. .

FIG. 8 is a view showing a punch dust dispersing mechanism of a punch dust collecting box. This configuration has also been proposed, and in the punch dust collecting box 31, a device is devised by the fixed hopper pins 32 and the mylar sheet 33 so that the punch dust is not concentrated and accumulated.

[0006]

As shown in FIG. 7, the punch dust collecting box is swung (knocked) to flatten the punch dust, or as shown in FIG. 8, fall into the punch dust collecting box. Conventionally, flattening is performed by dispersing the punch waste to be formed by a member having a divergent tapered shape. However, even with such a mechanism, punch dust is likely to be accumulated near the drop point and tends to accumulate, and it is insufficient to flatten the punch dust in the punch dust collection box.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet post-processing apparatus which can more reliably flatten punch punches in a punch waste collection box and can improve the punch dust deposition rate.

[0008]

SUMMARY OF THE INVENTION The object of the present invention is to provide a paper post-processing apparatus comprising a punching means for punching provided in a paper transport path, and a punch waste collection box provided below and near the punching means. A first moving member provided between the punching means and the punch waste collecting box for agitating the falling direction of the punch waste upon hitting the falling punch waste;
It is solved by the means of. The above object is achieved by a second means in which the reciprocating speed of the moving member is set in multiple stages in the first means. The above object is attained by the third means, wherein the moving member reciprocates in synchronization with the timing at which the punch dust falls. An object of the present invention is to provide a paper post-processing apparatus including a punching means for punching provided in a paper transport path and a punch waste collecting box provided below and near the punching means, wherein the punch waste accumulated in the punch waste collecting box is provided. The problem is solved by a fourth means provided with a moving member for flattening the upper surface of the device. According to a fourth aspect, in the fourth means, the moving member is an arm which reciprocates in a direction substantially perpendicular to a falling direction of the punch dust.
It is solved by the means of. According to a fourth aspect of the present invention, in the fourth means, a punch dust sensor for detecting fullness of the punch dust is provided in the punch dust collecting box, and the moving member is operated when the punch dust sensor detects the fullness. It is solved by a sixth means.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a sheet post-processing apparatus connected to a copying machine main body. A sheet post-processing device 2 is connected to the downstream side of the copying machine main body 1. The sheet post-processing device 2 includes a sensor 3 that detects a sheet passed from the copying machine body 1 near the entrance. Further, a punching unit (punching means) 5 for punching a filing hole on a sheet is provided in the middle of the sheet transport path 4 which is directed obliquely downward. Below the punching unit 5, a punch waste collection box 6 is provided in close proximity to the punching unit 5.
Is provided. A staple unit 7 is provided at the lowermost portion of the paper transport path 4, and a sorter bin 8 that can move up and down by a spiral cam is provided. The staple unit 7 and the sorter bin 8 are not directly related to the present invention, and therefore, detailed description thereof is omitted. In such a configuration, in the copying machine main body 1, the copied paper is
The sheet is conveyed in the direction of arrow B <b> 1, sent to the sheet post-processing apparatus 2, and detected by the sensor 3. The sheet is punched by the punching unit 5 in the process of being conveyed in the direction of arrow B2 in the sheet conveyance path 4. The punch waste falls into the punch waste collection box 6 and is deposited in a substantially conical shape.

FIG. 2 is a configuration diagram of a punch dust flattening mechanism according to the first embodiment of the present invention. FIG. 1 is a view taken in the direction of arrow A in FIG. Punch flattening mechanism comprising a motor 11 for driving the blades 10 and the timing belt 9 is provided.
The blades 10 are provided in a number corresponding to the number of punch locations, but may be one or more than the number of punch locations. After the sensor 3 detects the passage of the sheet, the motor 11
Rotates. At this time, the motor 11 repeats forward rotation and reverse rotation in a certain cycle, and slides the blade 10 right and left via the timing belt 9. The symbol C in FIG. 2 indicates the falling direction of the punch dust.

FIG. 3 is a view showing the reciprocating range of the blades of the punch dust flattening mechanism shown in FIG. The blade 10 reciprocates between the positions P1 and P2 for each punch as shown in FIG. The slide speed starts from 0 m / s, and v1, -v1, v2,-
v2, v3, -v3 m / s are set. At this time, a controller that sets the speed of the blade 10 so that the punch dust falling after the punch contacts the sliding blade 10 is used.
The speeds v1 to v3 are determined.

FIG. 4 is a diagram showing a state where the blades and the punch dust come into contact with each other. As described above, the blade 1 properly set
At a moving speed of 0, the punch dust 12 comes into contact with the blade 10. Since the impact force when the punch dust 12 comes into contact with the blade 10 is determined by the speed of the blade 10, by changing the speed of the blade 10, the punch dust 12 is subjected to an agitation action and is flattened in the punch dust collection box 6. It becomes possible to deposit.

As described above, in the first embodiment, the timing belt 9 as the punch dust flattening mechanism, the blade 10 fixed to the timing belt 9, the timing between the punching unit 5 and the punch dust collection box 6, A motor 11 that can rotate the belt 9 forward and backward can be provided. Then, the blade 10 is reciprocated at right angles to the falling direction of the punch dust 12, thereby stirring the falling direction of the punch dust 12.

Therefore, in the first embodiment, since the blades 10 are provided to agitate the falling direction of the punch chips 12 against the falling punch chips 12, the punch chips 12 can be deposited flat by the blades 10. Therefore, the punch waste 12 can be reliably flattened in the punch waste collection box 6, the volume ratio of the waste can be improved, and the number of times the punch waste 12 is discarded can be reduced. Further, in the first embodiment, since the reciprocating speed of the blade 10 is changed, the punch dust 12 can be further flattened by the stirring action. FIG. 5 is a configuration diagram of a punch dust flattening mechanism according to the second embodiment of the present invention. This figure is also a view taken in the direction of arrow A in FIG. 1, in which an arm 13 is provided in place of the blade 10 of the first embodiment. That is, the punch dust flattening mechanism of the second embodiment is fixed to the timing belt 9, the upper or lower side of the timing belt 9, and the lower end thereof faces the punch dust collecting box 6, 9 for driving 9
It has. A punch waste sensor 14 is provided at an upper position in the punch waste collection box 6 (a position where the punch waste 12 is detected to be full). Symbol C indicates the direction in which the punch dust falls as described above. The punch dust 12 gradually accumulates in a substantially conical shape in the punch dust collection box 6. When the punch dust sensor 14 detects the punch dust 12, the motor 11 rotates and the arm 13 is moved by the operation of the timing belt 9. Let it.
At this time, the motor 11 repeats forward rotation and reverse rotation for a certain period of time, and reciprocates the arm 13 between P3 and P4. Although one arm 13 is provided in the present embodiment, a plurality of arms 13 may be provided. By the above operation, the punch dust 12 in the punch dust collecting box 6 can be flattened by the arm 13, and the deposition rate of the punch dust 12 is improved. Further, when the punch dust sensor 14 detects the punch dust 12 even after the movement of the arm 13, it is possible to detect that the punch dust capacity is full.

FIG. 6 is a flowchart of the punch dust flattening process shown in FIG. First, it is checked whether the punch dust sensor 14 is on (S1). If the punch waste sensor 14 is not turned on, that is, the punch waste collection box 6
Is not full and the punch waste 12 can be received, the motor 11 is not driven and the punching unit 5 performs a punching operation (S2). If the punch waste sensor 14 is on, the motor 11 is rotated to flatten the punch waste 12 in the punch waste collection box 6, and the arm 13 is moved right and left in FIG. 5 (S3). Then, after this flattening, it is determined again whether or not the punch dust sensor 14 is turned on (S4). If the punch dust sensor 14 detects the punch dust 12 irrespective of the flattening operation by the movement of the arm 13, the punch waste collection box 6 is full, and it is not shown that the punch waste 12 is full. The information is displayed on the display device (S5). If the punch dust 12 is flattened by the movement of the arm 13 and the punch dust sensor 14 does not detect the punch dust 12, the punch waste collection box 6 has room for receiving the new punch dust 12. Then, a punching operation is performed by the punching unit 5 (S2).

As described above, in the second embodiment, the punch dust flattening mechanism is fixed to the timing belt 9, the timing belt 9, and the lower end thereof is a punch dust collecting box 6.
Arm 13 and a motor 11 located inside. Then, the punch 13 is flattened by reciprocating the arm 13 in the punch waste collection box 6.

Therefore, in the second embodiment, the arm 13 for flattening the upper surface of the punch dust 12 deposited on the punch dust collection box 6 is provided.
The upper surface of the punch dust 12 deposited on the surface is flattened by the arm 13 so that the punch dust 12
Can be reliably flattened, the scrap volume ratio can be improved, and the number of times the punch scrap 12 is discarded can be reduced. Further, in the second embodiment, the arm 13 is operated after the punch dust sensor 14 detects that the punch dust 12 is full, so that the arm 13 is operated.
Energy saving can be achieved by operating the operating mechanism only when necessary.

In the above-described embodiment, flattening of punch dust in the punch dust collecting box of the paper post-processing apparatus has been described. However, the present invention is not limited to this. For example, the present invention can be applied to a Schletter.

[0019]

According to the first to third aspects of the present invention, since the moving member is provided for agitating the falling direction of the punch chip when hitting the falling punch chip, it is possible to deposit the punch chip flat by the moving member. Since the punch waste can be reliably flattened in the punch waste collection box, the waste volume ratio can be improved, and the number of times the punch waste is discarded can be reduced. According to the second aspect of the present invention, since the reciprocating speed of the moving member is changed, the punch dust can be further flattened by the stirring action.
According to the fourth and fifth aspects of the present invention, since the moving member for flattening the upper surface of the punch dust collected in the punch dust collecting box is provided, the upper surface of the punch dust accumulated in the punch dust collecting box is flattened by the moving member. Therefore, the punch waste can be reliably flattened in the punch waste collection box, the waste volume ratio can be improved, and the number of times the punch waste is discarded can be reduced. According to the invention as set forth in claim 6, the moving member is operated after the punch waste collection box is in a state where the punch waste is full, so that the operating mechanism is operated only when necessary. As a result, energy can be saved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a sheet post-processing apparatus connected to a copying machine main body.

FIG. 2 is a view seen from an arrow A showing a configuration of a punch dust flattening mechanism according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a reciprocating movement range of a blade of the punch dust flattening mechanism shown in FIG. 2;

FIG. 4 is a diagram showing a state where blades and punch dust come into contact with each other.

FIG. 5 is a configuration diagram of a punch dust flattening mechanism according to a second embodiment of the present invention.

FIG. 6 is a flowchart of a punch dust flattening process shown in FIG. 5;

FIG. 7 is a view showing a swing mechanism of a punch waste collection box according to a conventional example.

FIG. 8 is a view showing a punch dust dispersing mechanism of a punch dust collecting box according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copier main body 2 Paper post-processing apparatus 3 Sensor 4 Paper transport path 5 Punching unit 6 Punch waste collection box 7 Staple unit 8 Sorter bin 9 Timing belt 10 Blade 11 Motor 12 Punch waste 13 Arm 14 Punch waste sensor

Claims (6)

[Claims] 1. A paper post-processing apparatus comprising: a punching means for punching provided in a paper transport path; and a punch waste collection box provided below and near the punching means, wherein the punching means and the punch waste collection box are provided. And a moving member for agitating the falling direction of the punch dust upon contact with the falling punch waste. 2. The sheet post-processing apparatus according to claim 1, wherein the reciprocating speed of the moving member is set in multiple stages. 3. The sheet post-processing apparatus according to claim 1, wherein the moving member reciprocates in accordance with a timing at which the punch dust falls. 4. A paper post-processing apparatus comprising: a punching means for punching provided in a paper transport path; and a punch waste collection box provided below and near the punching means. A sheet post-processing device comprising a moving member for flattening the upper surface of the waste. 5. The sheet post-processing apparatus according to claim 4, wherein the moving member is an arm that reciprocates in a direction substantially perpendicular to a direction in which the punch dust falls. 6. The punch waste collecting box according to claim 4, further comprising: a punch waste sensor for detecting a full punch waste in the punch waste collecting box; and operating the moving member when the punch waste sensor detects the fullness. A sheet post-processing device characterized by the following.