JP3293979B2 - Punching device and paper processing device - Google Patents

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 printing machine, and a punching machine for ejecting paper.
About drilling apparatus and sheet processing equipment performing.

[0002]

2. Description of the Related Art Conventionally, in some copying machines and printers, a stapling apparatus for binding a plurality of sheets discharged from an image forming apparatus, and a sheet punching apparatus (punching apparatus) for punching holes in the sheets. Is used. 2. Description of the Related Art As a paper punching method of a conventional paper punching device, there is a method of punching a paper by inserting a blade portion of a leading end surface of a punch that operates linearly in a vertical direction with respect to the paper into a hole of a fixed die. Are known. In the case of the sheet punching method, the punch residue generated in the punching device is fixed to the punch of the punching device, and therefore, after being pushed out in the linear movement direction of the punch, only falls in the direction of gravity. There is no scattering of punch scum, and the shape of the hole of the die is straight.

On the other hand, as another paper punching method, a blade conveyed between the die and the punch is punched by rotating and inserting a blade on the tip surface of the punch into a hole of a rotating die. The scheme is known. The shape of the hole of the conventional die in this rotary paper punch is as follows:
It is formed in the same direction as the insertion direction of the blade portion of the punch, and also linearly.

[0004]

By the way, in the hole portion of the die in the conventional rotary paper punching device, a straight line in the same direction as the insertion direction of the blade portion of the punch for a distance corresponding to the thickness of the die. A part is formed. In a paper punching device provided with a die having a hole having such a shape,
When the rotation axes of the punch and the die are installed in the horizontal direction, and the punch and the die are inserted into the holes of the die and the positional relationship between the punch and the die is horizontal immediately after the punching of the paper is completed. Immediately after the perforation of the sheet, the linear portion of the hole of the die becomes horizontal, so that punch scum accumulates in the linear portion of the hole of the die. For this reason, in this paper punching device, after the punching of the paper, the die further rotates, and when the blade portion is located below, punch scum accumulated in the linear portion of the blade portion is caused by the rotation of the die. Due to the centrifugal force, it may pop out of the hole of the die.

Therefore, in the sheet post-processing apparatus provided with such a sheet punching device, the punch residue may not fall into a predetermined waste container, and the punch residue may be scattered in places other than the waste container. . For this reason, in the conventional sheet post-processing apparatus, there is a problem that the punch residue scattered outside the waste storage box in the apparatus adversely affects the punching and conveyance of the sheet. SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a paper post-processing capable of quickly dropping a punched scum into a die and collecting it in a predetermined scum storage box. It is to provide a device.

Further, in the above-mentioned conventional paper post-processing apparatus, since the punch scum that has fallen into the scum container is piled up in a mountain shape, the vicinity of the top of the scum of the punch scum exceeds the upper limit of the scum container. However, there is a case where a considerable space for accommodating the punch residue remains near the end of the waste collection box. Another object of the present invention is to provide a paper post-processing apparatus provided with a waste storage box capable of storing punch waste as effectively as possible.

[0007]

According to a first aspect of the present invention, there is provided a method for punching a sheet to be conveyed.
Is provided in the paper transport path for punching holes with
Caused by the punching operation of the punching device and the punching device.
Scrap storage box for stacking and storing punch scum in mountains
And the punch waste stored in the waste storage box.
It is a detection means for detecting punch scum when it is full.
Side by a predetermined distance from the drop position of the punch residue.
Away from the top and the top is the upper limit of the storage box.
Amount of Punch Debris Deposited Over Mountain
Detects punch scum near the middle of the box when the capacity of the box is almost equal
The above-mentioned waste container is used as the detecting means provided at the position where
It is characterized by having.

According to a second aspect of the present invention, there is provided a paper processing apparatus according to the first aspect.
The drilling device has a base fixed to the first axis of rotation.
As well as multiple blades with
A punch, and a second rotating shaft at a predetermined distance from the punch.
And a plurality of dies arranged in a
In a rotary drilling machine that inserts
The hole of the above die is inward from the surface of the die.
The die has an expanding conical shape, and the dies are
A shaft for dropping drilled scum out of the die
Guide having a conical surface formed in the
The inner end of the hole of the chair is open to the conical surface of the guide .

According to a third aspect of the present invention, there is provided a sheet according to the first aspect.
In the processing apparatus, the boring device has a base on the first rotation axis.
Fixed and formed with a blade on the tip surface
And a second rotation at a predetermined interval from the punch
A plurality of dies arranged on a shaft,
Insert the end into the hole of the above die
And the holes of the above die go inward from the surface of the die.
Into a conical shape that spreads out.
For dropping more pierced spills out of the dies
A guide having a conical surface formed in the axial direction;
The inner end of the die hole opens into the conical surface of the guide, and
Provided in the paper transport path to make holes in the incoming paper
And the waste container is moved by the punching operation of the punching device.
The bottom surface has a flat surface to accommodate the generated punch residue.
It is characterized by doing.

[0010]

According to the present invention, according to the first aspect, the punch scum
The detecting means for detecting the amount of deposition is a drop position of the punch scum.
At a position laterally separated by a predetermined distance from the
Bread piled up in a mountain shape with the top exceeding the upper limit of the storage box
Provided at the position for detecting punch residue near the middle of Chicus
The amount of punch residue and the volume of the waste container
Can be detected when it is almost equal, and the punch residue is full
Detection of punch scum during falling when it is not
Is avoided, and waste in a limited space is
The capacity of the container is maximized.

According to a second aspect of the present invention, the blade of the die is formed.
Holes are conically widened inward from the die surface.
The punch residue on the perforated paper is
Into the inside of the die, and
The open surface is conically widened, so this die
Punch debris dropped inside falls out of the die
Is done.

According to a third aspect of the present invention, a punched sheet
The bottom surface of the waste storage box where the anti-cass is stored is flat.
Then, the piles of punch scum accumulate on the bottom of the scum box.
It is slippery and accommodates more punch scum.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a copy sheet P discharged from the image forming apparatus 1 is supplied to an entrance guide plate 3 of a sheet post-processing apparatus 2,
Then, the sheet is conveyed to the sheet punching device 5 via the branch claw 4.

Thereafter, as shown in FIG.
When the rear end is detected by the inlet sensor 6, the drive motor (not shown) operates after a certain time, and the rotating shafts 8, 9
Rotate in the directions indicated by the arrows in FIG. The rotating shafts 8 and 9 are disposed in the paper punching device 5 in parallel with each other with the transport path of the copy sheet P interposed therebetween. Each of the rotating shafts 8 and 9 has a plurality of punches 10 and Dice 11
Each is fixed so as to face each other.

When the rotating shafts 8 and 9 rotate, the punches 10 and the dies 11 rotate as shown in FIG. 3, and the blades 12 on the leading end surfaces of the punches 10 sandwich the copy paper P with the dies 11. Of the copy paper P, thereby punching a punch hole at a predetermined position on the copy sheet P.

The hole 13 of the die 11 in the present embodiment
Has an inclined portion 14 having a conical shape extending in the insertion direction of the punch 10, as shown in FIG. Therefore, according to the present embodiment, the punch scum 15 generated by the perforation of the copy sheet P described above is separated from the copy sheet P, and is immediately dropped into the die 11 along the inclined portion 14 of the die 11. You. Then, the punch residue 15 which is dropped inside the die 11, guide portions 16 made up of a conical surface which is made form axially inside the die 11
By (FIG. 4), it is dropped to the outside of the die 11, and as shown in FIG. 2, it is dropped and collected into a waste container 17 having an opening at an upper portion provided at a lower portion of the die 11.

The punch scum 15 collected in the scum storage box 17 in this manner is piled up in a mountain shape with the fall position as a top as shown in FIG. When the punched waste 15 accumulated and collected in the shape of a mountain reaches the position of the full detection hole 18 provided in the waste storage box 17, the punch waste 15 in the waste storage box 17 passes through the full detection hole 18.
The punch debris 15 is detected by a fullness detection sensor 19 (FIG. 2) disposed in the waste storage box holding frame of the sheet post-processing device 2 for detecting the punch waste, and the punch waste 15 collected in the waste storage box 17 is full. A message indicating the status is displayed outside the device.

Here, the full detection hole 18 in this embodiment is used.
5, the punch residue 1 of the residue storage box 17 as shown in FIG.
5 is provided at a position away from the falling position by a predetermined distance. Therefore, according to the present embodiment, when the punch residue 15 is full, the full detection sensor 19 detects the vicinity of the middle part below the top of the pile of punch residues 15.
As shown in FIG. 5, the position of the full detection hole 18 is such that the vicinity of the top of the punch waste 15 is full when the waste is full.
Is slightly set above the upper limit (opening at the top), and the amount of the collected punch residue 15 is set to be approximately equal to the capacity of the residue container 17.

Further, the waste storage box 17 in this embodiment is used.
Is formed in a box-like shape having a flat bottom surface, and is configured to be detachable from the apparatus main body of the sheet post-processing apparatus 2. The waste container box 17 is taken out of the sheet post-processing device 2 when the full state of the punch waste 15 is detected as described above, and after the punch waste 15 accommodated therein is discarded, the waste container box 17 is removed. Is re-attached to its original position.

On the other hand, as a means for uniformly depositing the punch scraps 15 piled up in the waste collecting box 17 in the waste collecting box 17 as described above, (1) the scrap collecting box 17 is vibrated to (2) a method of leveling the tops of the piled-up punches 15 by a leveling member made of a rigid body, (3) a top of the piled-up punches 15. There is a method of compressing the portion with a compression member, and by incorporating these means in the present embodiment, it becomes possible to maximize the limited capacity of the waste storage box 17.

[0021]

As described above, according to the first aspect of the present invention,
According to the above, the full shape of punch waste provided in the waste storage box
Full detection means for detecting the state
At a position that is laterally separated by a predetermined distance from the position, and
The top was piled up in a mountain shape exceeding the upper limit of the storage box
It is provided at the position to detect punch residue near the middle
The punch waste in the waste storage box is less than full
Can be prevented from being detected during the fall of the punch residue.
And the bread piled up in a pile when punch scum is full
By detecting the vicinity of the middle hill below the top of Chicus
The amount of punch scrap collected and the
The capacity of the storage box can be made close to the same
Make the most of the capacity of the waste box in the space
Can be.

According to the second aspect, the hole of the die is
It spreads in a conical shape from the die surface inward,
The chair consists of a conical surface with an open inner end of the die hole.
The punch has a blade, so the blade of the punch is
Insertion and punching of copy paper
No dirt is accumulated in the hole of the die.
The punch spills falling inside the
It can be deposited at the place
Can be prevented .

Further, according to the third aspect, the punch scum is collected.
Since the bottom of the waste storage box is formed flat,
For the set volume of this waste storage box,
Maximum capacity and contain
On the bottom of the waste container box
Punch scum is slippery, which allows for disposal of punch scum.
Can be facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a sheet post-processing apparatus of the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of a sheet punching device in the embodiment.

FIG. 3 is a cross-sectional view illustrating a punching operation of a punch and a die of the punching device in the embodiment.

FIG. 4 is a side view for explaining the operation of the punch and the die of the sheet punching device in the above embodiment after punching the sheet.

FIG. 5 is a schematic side view for explaining a process of detecting a full punch residue in the waste container of the paper punching device of the embodiment.

[Explanation of symbols]

 Reference Signs List 2 Paper post-processing device 3 Inlet guide plate 4 Branch claw 5 Paper punching device 6 Inlet sensor 8,9 Rotary shaft 10 Punch 11 Dice 12 Punch blade 13 Dice hole 14 Dice inclined portion 15 Die guide 16 Dice guide portion 17 Waste storage box 18 Full detection hole 19 Full detection sensor P Copy paper

Continued on the front page (72) Inventor Yuji Ueno 2-28-24, Izumi 2-chome, Higashi-ku, Nagoya-shi, Aichi ・ Inside Ricoh Elemex Corporation (72) Inventor Mitsuru Ichikawa 2-28-24, Izumi 2-chome, Higashi-ku, Nagoya-shi, Aichi ・Ricoh Elemex Corporation (56) References JP-A-4-41199 (JP, A) JP-A-63-212499 (JP, A) JP-A-52-39881 (JP, A) Jpn. (JP, U) JP-A 62-88599 (JP, U) JP-A 49-12320 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B26F 1/00-1 / 46

Claims (3)

(57) [Claims] (1) A punch and a die are provided on a conveyed sheet.
Punching device provided in a paper transport path for punching holes
And punch scum generated by the punching operation of the punching device.
And a waste storage box for storing piles
When the punch waste stored in the waste storage box is full,
Detecting means for detecting punch scum;
Laterally away from the drop position
At the top and the top of the box exceeds the upper limit of the storage box.
Amount of punch scum deposited on the slag and capacity of the scum storage box
At the position where the punch scum is detected near the middle
The above-mentioned waste container has the provided detecting means.
A paper processing apparatus characterized by the above-mentioned. 2. The sheet processing apparatus according to claim 1, wherein
The hole device has a base fixed to the first rotating shaft.
In addition, a plurality of punches having a blade portion
A plurality of the plurality of rotation axes arranged at a predetermined interval
And a die, and a tip of the punch is inserted into a hole of the die.
In the rotary drilling device to be inserted, the hole of the die
Has a conical shape that extends inward from the die surface.
Then, the dies remove the scum pierced by the piercing device.
A circle formed in the axial direction to drop out of the die
It has a guide with a conical surface, and the inner end of the hole of the die is
Paper processing characterized by opening in the conical surface of the guide
apparatus. 3. The paper processing apparatus according to claim 1, wherein
The hole device has a base fixed to the first rotating shaft.
In addition, a plurality of punches having a blade portion
A plurality of the plurality of rotation axes arranged at a predetermined interval
And a die, and a tip of the punch is inserted into a hole of the die.
In the rotary drilling device to be inserted, the hole of the die
Has a conical shape that extends inward from the die surface.
Then, the dies remove the scum pierced by the piercing device.
A circle formed in the axial direction to drop out of the die
It has a guide with a conical surface, and the inner end of the hole of the die is
Open the conical surface of the paper guide and
Is provided in the paper transport path to punch
The punch scum generated by the punching operation of the punching device is collected.
Characterized in that the order to capacity, the bottom shape forms a plane
Paper processing device.