JPH0641830Y2 - Cutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a cutter device for cutting continuously movably arranged sheets.

2. Description of the Related Art An example of such a cutter device is shown in FIG. 2B of Japanese Patent Laid-Open No. 61-241197. In the cutter device, the height position of the cutter is constant, and the cutter is located at the same height even when the cutter is returned to its original position. Therefore, the cutter is cut at a right angle with respect to the stopped sheet, the cutter is returned to the original position through the same path, and then the sheet is moved.

Problems to be Solved by the Invention In the above-mentioned conventional example, when cutting the paper, the paper is stopped once, but the stop must be continued until the cutter returns to its original position (returns). It will take a long time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cutter device capable of shortening the time required to cut a sheet.

Means for Solving the Problems A cutter device of the present invention that achieves the above object is a cutter device that cuts a continuously movably arranged sheet at a predetermined position. One end is rotatably supported by the holder and acts so as to cut the sheet on the forward path, and receives a force from the sheet on the return path and rotates in a direction opposite to the traveling direction of the holder around the one end. A cutter that moves and slides the other end on the paper, and a protrusion provided on the holder so as to regulate the rotation range of the cutter during the forward path and automatically fix the cutter at a predetermined position. It consists of and.

The cutter moves with the holder fixed to the moving means, but cuts the paper on the outward path because the cutter automatically moves in a fixed state. On the return path, the cutter is rotated by the force received from the paper, and its tip moves on the paper. Therefore, the paper can be moved while the cutter is in this state, and the time required for cutting the paper can be shortened accordingly.

Embodiment In FIG. 1, (1) is a first chain wheel to which a driving force of a motor (not shown) is applied, and a plurality of teeth are formed in the periphery, but it is shown for simplification of the drawing. Not not. (2) is the second chain wheel, the first
It has the same shape as the chain wheel (1).
(3) is the first and second chain wheels (1)
It is a chain suspended between (2), and this chain forms a forward path (4) traveling in the arrow (A) direction and a return path (5) traveling in the opposite direction (B) in the same route.

(6) is a cutter, and this cutter (6) is pivotally supported by a holder (7) fixed to a chain (3) via a shaft (8) as shown in FIG. Move with body (7). The cutter (6) has a blade (6a) on one side
have. In this embodiment, the holder (7) is integrally provided with a protrusion (9) for restricting the rotation range of the cutter (6) and thereby automatically fixing the cutter (6) on the outward path. The holding body (7) has a guide rod (1
It is loosely fitted in 0) and is guided by the guide rod (10) when it moves as the chain moves. The third method in Japanese Utility Model Laid-Open No. 57-57452 as means for moving the holder (7)
A mechanism as shown in the figure may be used.

The continuous paper (11) is assumed to move in the direction perpendicular to the paper surface of FIG. 1. When the drive motor is rotated with the continuous paper (11) stopped, the chain (3) moves in the direction of arrow (A). Then, the holder (7) moves from the right end of the outward path (4) to the left. At this time, the blade (6a) of the cutter (6) cuts the paper (11). When reaching the left end of the outward path, the cutter (6) separates from the paper (11). When the chain (3) is moved in the direction (B) by reversing the rotation of the drive motor in this state, the cutter (7) moves along the return path (5) from left to right, and the cutter (7) moves. (6) also moves to the right, but at this time, the cutter (6) receives a rotational force from the paper as shown by the chain double-dashed line in FIG. ) Slides on the paper (11). In this state, the cutter (6) does not substantially act on the paper (11). Therefore, during this time the paper (11)
Moves and stops in synchronization with the timing when the cutter (6) reaches the right end. The movement / stop of the paper (11) can be managed by a microcomputer in consideration of the output of a detection sensor or the like.

By setting the moving direction of the paper (11) and the cutter (5) at an angle instead of a right angle, the same cutting effect can be obtained even if the paper is cut while being continuously moved. Guide rod (1
0) is not always necessary, and even if these are deleted, it can be sufficiently put to practical use.

FIG. 3 is a schematic view of the entire electronic copying machine showing an application example of the cutter device of the present invention.

In the figure, (12) is a photosensitive drum that rotates in the (C) direction at a constant speed, and the drum (12) is made of, for example, a material such as selenium based photosensitive material on the surface of a drum base formed of a material such as aluminum. It is formed by vapor deposition. This drum (1
Around the 2), along the direction of rotation, the main charging part (13),
An exposure section (14), a development section (15), a transfer section (16), a separation section (17), a cleaning section (18), and a charge removal section (19) are provided in this order.

(20) is an automatic document feeder, and a feed roller (21)
It has (22). (23) is a document receiver. (twenty four)
Reference numeral (25) is an exposure lamp, the output light of which is reflected by the original document provided on the contact glass (26) and then reaches the exposure unit (14) through the lens array (27). The transfer paper is supplied to the rotating drum (12) through a pre-transfer roller (28). The paper is a continuous paper (29) wound in advance in a roll shape from a feed roller (30) (31). In the path for transporting to (4), it is cut to a predetermined length by the cutter (6) of the above-mentioned cutter device and then given to the pre-transfer roller (28) through the feed roller (31) and the registration roller (32). At this time, when the length of the paper to be copied is designated by the operation key, the internal microcomputer controls the movement of the paper (29) and the like so that the length will be in accordance therewith. In any case, the configuration in which the continuous paper (29) in a roll shape is used and the paper is cut by the cutter device is advantageous for downsizing the electronic copying machine.

The sheet transferred by the transfer section (16) and separated by the separation section (17) is fixed by the fixing section (34) through the guide (33),
Further, it is discharged to the copy receiver (36) by the discharge roller (35). Incidentally, (37) is a fan for releasing the heat generated in the fixing section (34).

The cutter device of the present invention can be applied not only to such an electronic copying machine but also to other image forming apparatuses such as a facsimile and a printer.

Effect of the Invention According to the present invention, the cutter only slides on the paper when the paper is cut and then returns to its original position, so that the paper can be moved in the meantime. , The cutting time as a whole is shortened, and the effect is great. Further, in the present invention, although the posture of the cutter is different between the cutting state and the non-cutting state (when returning to the original state), such two postures can be easily obtained. That is, the cutter is rotatably supported at one end with respect to the holding body, and the posture at the time of cutting is obtained by fixing and fixing the cutting range of the cutter by the protrusion of the holding body.
The posture when returning to the original position is obtained by the cutter being rotated by receiving a force from the paper and sliding on the paper. Therefore, no special driving means is required to put the cutter in the cutting posture or in the non-cutting posture, so that the configuration as a whole is extremely simple and the cost is low.

[Brief description of drawings]

FIG. 1 is a schematic view of a cutter device embodying the present invention.
FIG. 2 is a sectional view of the main part. FIG. 3 is a schematic diagram of an electronic copying machine to which a cutter device is applied. (3) …… Chain (moving means), (4) …… Forward trip, (5) …… Return trip, (6) …… Cutter, (7) …… Holder, (9) …… Projection, (11 ) (29) …… Continuous paper.

Claims (2)

[Scope of utility model registration request] 1. A cutter device for cutting movably arranged continuous paper at a predetermined position, a holding body reciprocating by a moving means, and one end rotatably supported by the holding body to rotate the paper in the forward path. A cutter that acts so as to cut and rotates in a direction opposite to the traveling direction of the holding body around the one end by receiving a force from the paper in the return path and the other end slides on the paper, A cutter device, comprising: a protrusion provided on the holder so as to restrict the rotation range of the cutter during the forward path and automatically fix the cutter at a predetermined position. 2. The cutter device according to claim 1, wherein the fixing means is a protrusion that restricts a rotation range of the cutter.