JP3286037B2 - Paper handling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling hand for performing a drilling process.
On Kamisho management devices use with the stage.

[0002]

BACKGROUND ART sheet processing apparatus punches holes for filing the sheet conveyed is proposed.

[0003] The use Kamisho management apparatus, for example, by punching apparatus is provided which has a configuration as drilling punched holes without interfering with conveyance of the sheet is provided a rotary punch unit in the sheet conveying path I have. In this punching device, generally, the sheet conveying speed and the operating speed of the punching die are controlled at the same speed, so that a clean hole without burrs can be formed in the sheet.

[0004]

However, in the above-mentioned prior art, depending on the type of paper, such as thin paper or paper quality, there is a case in which the paper is turned up to the rear end of the hole at the time of perforation and breaks. This is because when a trailing portion of the leading end of the punch comes out of the sheet after making the hole, the trailing edge of the punch hole (see FIG.
This is because the paper is caught in the trailing portion of the punch tip in (A) of (c), and this may occur particularly when the transport paper and the punch dice are operating at the same speed.

An object of the present invention controls the operating speed of the punch-die, up curling the perforated paper is to provide a Kamisho management apparatus use with perforations means for applying tear-free clean punching.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a punching device which comprises punches and dies which are rotatable to face each other, and which punches a sheet conveyed by rotating the punches and the dies in opposite directions. And a drive unit for rotating the punch and the die, the control unit comprising: a control unit configured to change an operation speed of the punch and the die by the drive unit in accordance with a punching state of the punching unit. The means comprises the punch and the die.
The operating speed of the chair is controlled during the punching operation of the punching means.
In the same way as the feed speed, the leading part of the punch
After the beam is emitted, drive the paper so that it is faster than the paper transport speed.
This is achieved by a first means for controlling the moving means .

[0007] The above object is achieved by facing rotatable pumps.
A punch and a die.
The paper that is conveyed by rotating it in the
Perforating means for perforating and rotating the punch and die
And a driving means for driving the paper processing apparatus.
According to the piercing state of the piercing means, the driving means
Control means for changing the operating speed of the punch and die are provided.
The control means is arranged such that the leading portion of the tip of the punch is
After passing through the punch and the die by the driving means
This is achieved by a second means for increasing the operating speed of the system .

[0008]

SUMMARY OF] by the first, second means, port inch and the operating speed of the die, during drilling operation of the drilling means in the same manner as the sheet transport speed, the sheet conveying speed after the leading end of the punch tip has passed through the sheet When punching, or during punching, the punch and die are controlled to increase the operating speed of the punch and die after the leading part of the punch has passed through the paper. To avoid getting caught in

[0009]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a configuration diagram of a use Kamisho management apparatus according to the embodiment, FIG. 2
FIG. 3A is a detailed configuration diagram of the punch unit, FIG.
(B), (c) is an explanatory view showing a punch and die operation process of the sheet punching device for use Kamisho management apparatus according to the embodiment, FIG. 4
(A), (b), (c) is an explanatory view showing a state of the punch and paper use Kamisho management apparatus according to the embodiment, FIG. 5 is a <br/> for Kamisho management apparatus according to Embodiment punch It is a flowchart which shows control.

As shown in FIG. 1, an image forming apparatus 1 such as a copying machine sends an image-formed sheet to a sheet post-processing apparatus 10 provided at a subsequent stage by a sheet discharging roller 2 provided at a sheet discharging section. Has become.

A switching claw 1 is provided at the entrance of the sheet post-processing device 10.
1 is provided to switch the incoming paper to the upper transport path 12 side and the lower transport path 13 side. The sheet directed to the upper transport path 12 is supplied to the upper transport rollers 14 and 1.
5 guides the paper to the upper paper discharge tray 16. On the other hand, the paper directed to the lower transport path 13 side is the lower transport rollers 17 and 1.
It is conveyed to discharge rollers 28 by 8 and 19 and guided to a bin 20 of a movable sorter.

A punch unit 21 is provided between the lower transport rollers 17 and 18, and can punch holes without stopping the paper being transported. Reference numeral 22 denotes a stapler arranged near the base of the bin 20.

As shown in FIG. 2, the punch unit 21 includes a punch 23, a die 24 opposed to the punch 23 across the sheet path, and a drive motor (not shown) for operating the punch 23 and the die 24. It consists of. The paper transported in the lower transport path 13 is detected at the trailing edge of the paper by the entrance sensor 25, and after a lapse of a predetermined time, the drive motor starts operating (the punch 23 and the die 24 rotate in opposite directions to each other), The punch 23 and the die 24 rotate at the same speed and in the same direction as the sheet is conveyed, and punch holes at predetermined positions of the sheet. In this embodiment, a stepping motor is used as a drive motor so that position / speed control can be performed. Reference numeral 26 denotes a collection box which is located below the die 24 and collects a piece of paper that has been punched and dropped.

Next, the operation will be described. Image forming apparatus 1
The sheet P discharged from the sheet discharge roller 2 is conveyed to the sheet post-processing device 10. The sheet P conveyed to the sheet post-processing device 10 passes through the entrance sensor 25, is conveyed to the distribution unit by the switching claw 11, and is conveyed to the punch unit 21 by the conveying rollers 18 and 19. When the sheet P is conveyed to the punch unit 21 and the rear end of the sheet passes through the entrance sensor 25 for a certain period of time, the driving motor for punching is activated and the die 24 and the punch 23 are moved in the direction of the arrow in FIG. Rotated. The sheet P is a punch 2 of the punch unit 21.
3. Conveyed between dies 24, punch 23, dies 2
4 rotates (see FIG. 4A), and the hole 24a of the die 24 is formed.
When the punch 23 engages with the punch 23 (see FIG. 4B), the hole is punched. After a certain period of time after the paper P passes through the entrance sensor 25, the punch 23 and the die 24 rotate and engage with each other, so that a predetermined position of the paper P can be perforated.
In addition, the time from when the sheet P passes through the entrance sensor 25 to when the punch 23 and the die 24 start rotating can be set arbitrarily, whereby the punching can be performed at an arbitrary position of the sheet P. Becomes possible. Punch unit 2
1 are transported by the transport rollers 18 and 19
Is conveyed to the discharge roller 28 and discharged to the bin 20. The punch 23 and the die 24 that have finished punching the paper P further rotate, and both stop at a predetermined position.

The above series of operations is performed for each sheet discharged from the image forming apparatus 1. Also, punch 23,
Dust scrap 27 of paper P perforated by die 24
Immediately after the hole is drilled, it falls into the hole 24a of the die 24, further reaches the tapered guide portion on the inner surface of the die 24, and falls from the inside of the die 24 to the outside by the tapered guide portion. It falls into the box 26.

Next, features of the present invention will be described. As described above, the punch 23 and the die 24 start operating from the standby position in FIG. 2, immediately after the operation in FIG. 3A, at the time of the perforation in FIG. 3B, and after the perforation in FIG. Are sequentially rotated and holes are drilled. The problem here is the relationship between the paper transport speed and the punch operating speed of the perforated portion. Since the present invention is a rotary punch mechanism, the paper speed and the punch operating speed are usually the same. However, depending on thin paper or paper quality, when the leading edge of the punch 23 passes through the paper P, the trailing portion of the leading edge of the punch 23 is caught at the portion A in FIG. 4C, and the paper P is turned up or torn. There are cases. Therefore, in the present invention, in order to avoid this, the sheet speed and the punch operation speed are controlled at the same speed until the punch hole is formed in the sheet P in FIGS. FIG. 4 in which the leading portion has passed through the sheet P
From the position (c), the punch operation speed is increased to increase the punch 23.
The trailing portion of the leading end is controlled so as not to be caught on the sheet P.

The above operation will be described with reference to the flowchart of FIG. In FIG. 5, the sheet P is carried into the apparatus (step 1-1), and the trailing edge of the sheet P is checked by the entrance sensor 25 (step 1-2). When the trailing edge of the sheet P is detected, the punch operation timer is started. (Step 1-3). After a predetermined time has elapsed (step 1-4), the operation of the punch is started (step 1-5), and the speed of the leading end of the punch 23 is controlled so as to be the same as the paper speed. As described above, the punch driving device uses a stepping motor, and position control can be easily performed by managing output pulses. Next, punch 2 is controlled by punch operation position management.
It is checked whether or not the leading part of the leading end of the sheet 3 has passed through the sheet P (step 1-6). When the leading part comes to the position shown in FIG. (Step 1-7) The punch 23 is controlled so as not to be caught by the sheet and not to be turned up on the sheet P and torn. Then, the process returns to the standby position for each sheet (step 1-8) to prepare for the next sheet P.

In the present invention, it is sufficient that the operating speed of the punch 23 and the die 24 is controlled to be faster than the sheet conveying speed after the leading portion of the punch 23 has passed through the sheet P.

In the above-described embodiment, a driving device capable of controlling the speed and the position of the punch 23 and the die 24 for punching holes is provided, and the operating speed of the punch and the die is normally controlled. Is controlled at the same speed as the paper transport speed, and after the leading portion at the leading end of the punch 23 passes through the paper, the operating speed of the punch and the die is controlled to be faster than the paper transport speed, or the punch and the die are Since the operation speed is controlled to be increased, the trailing portion of the leading end of the punch 23 does not catch on the trailing edge of the sheet, so that a clear punch hole can be formed regardless of the type of sheet such as thin paper or paper quality.

[0020]

Effects of the Invention According to the present invention Symbol placement, control means, the operating speed of the punch and the die, during drilling operation of the drilling means in the same manner as the sheet transport speed, the preceding portion of the punch tip paper After the paper exits, the drive means is controlled so that it is faster than the paper transport speed.Therefore, the trailing edge of the punch does not catch on the trailing edge of the punch, so clean punch holes are made regardless of the type of paper, such as thin paper or paper quality. You can open it.

According to the second aspect of the present invention, after the leading portion of the leading end of the punch has passed through the sheet, the operating speed of the punch and the die by the driving means is increased, so that the trailing portion of the leading end of the punch is behind the sheet. Since it does not catch on the edge, it is possible to make a beautiful punch hole regardless of the type of paper such as thin paper or paper quality.

[Brief description of the drawings]

1 is a configuration diagram of a use Kamisho management apparatus according to an embodiment of the present invention.

It is a detailed block diagram of a punching unit of use Kamisho management apparatus according to an embodiment of the present invention; FIG.

3 is an explanatory diagram showing an operation process of the punch and the die of the sheet punching device for use Kamisho management apparatus according to an embodiment of the present invention.

4 is an explanatory view showing a state of the punch and paper use Kamisho management apparatus according to an embodiment of the present invention.

5 is a flowchart showing a punch control of use Kamisho management apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image forming apparatus 10 Paper post-processing apparatus 21 Punch unit 23 Punch 24 Dice P Paper

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsuru Ichikawa 2-28-24 Izumi, Higashi-ku, Nagoya-shi, Aichi Inside Yoko Tavir Ricoh Elemex Co., Ltd. (72) Inventor Tetsuji Watanabe 2-28- Izumi, Higashi-ku, Nagoya-shi, Aichi 24 Yokota Building Ricoh Elemex Co., Ltd. (56) References JP-A-4-354699 (JP, A) JP-A-62-201772 (JP, A) JP-A-58-15697 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B26F 1/00-1/46

Claims (2)

(57) [Claims] 1. A punching device comprising: a punch and a dice facing each other, wherein the punch and the dice are rotated in opposite directions to perforate a conveyed sheet; and the punch and the die are rotated. in the sheet processing apparatus having a driving means for, in accordance with the drilling situation the drilling means comprises a control means for changing the operating speed of the punch and die by the driving means, said control means of said punch and die Operating speed,
During the punching operation of the punching means, the same as the sheet transport speed,
After the leading part of the punch has passed through the paper,
A sheet processing apparatus , wherein the driving means is controlled so as to make the speed faster than a feeding speed . 2. An opposed rotatable punch and die.
The punch and the die are rotated in opposite directions to each other.
Perforating the conveyed paper.
Punching means and a drive for rotating the punch and the die
A paper processing apparatus having a driving unit, wherein
Control means for changing the operating speed of the punch and die.
Comprising, before Symbol control means, after a preceding portion of the distal end of the punch has passed through a paper sheet processing apparatus characterized by accelerating the operating speed of the punch and die by the driving means.