JPS59224299A - Cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cutter for cutting paper into a predetermined length in a copying machine or the like that uses roll paper.

(Prior art) In general, when cutting paper, the following method is used, which is equipped with a pair of blades consisting of an upper blade and a lower blade having a blade width greater than the paper width, and one of the blades is fixed. equipment is used. Namely, ■ As shown in Figure 1, one blade (2) as a fixed blade moves up and down in the direction of arrow a to cut the paper (8) with respect to the other blade (υ); As shown in Figure 2, one blade (4) is provided as a fixed blade, and a rotary blade (6) rotatably supported on a shaft (5) is provided as the other blade. There is a rotary type in which a bearing (7) and a clutch (8) are attached, and the rotary blade (6) is rotated in the direction of the arrow by a motor α0 via a belt (9) to cut the paper (3). ■
As shown in Figure 3, one blade as a fixed blade (11 has a blade width on the width plate of paper (3), and the other blade has a disk-shaped blade (1η), which is indicated by the arrow A sliding method in which the paper (3) is cut by sliding it to the position indicated by the two-dot chain line as shown in C, ■ As shown in Figure 4 [A] and (B), both of the pair of blades are cut with disc-shaped blades, respectively. (There is also a one-type slitter that consists of a blade α1 and cuts the paper (8) by rotating the blades α2 and α in the direction of arrows d and e while conveying the paper (8) between them.

All of these four methods basically combine blades made of two rigid bodies, and their cutting speed, cutting amount (the amount of throughput in one movement of the blade), and the cutting result after cutting. The purpose of use of the paper (8), taking into account the sagging of the paper (3) and the paper (8), etc. (which method to adopt will be decided depending on the method.For example, if a large amount is to be cut, the method described above) In addition to method (2), if the throughput is small but a compact mechanism is required, the slide method (2) or the single slitter method (2) can be used, as well as the relatively compact and medium-sized method in between. When high volume processing is required and low driving energy is required, the above
A rotary type is used.

However, the blades used in each of these methods are extremely expensive, whether they are fixed blades or moving blades.
Moreover, as mentioned above, since it is made of a rigid body, the cutting edge is likely to be damaged if a foreign object such as a metal piece gets into it. Furthermore, if the blade edge is damaged, it will be necessary to replace the blade, but in this case, regarding the relative position of the blade edge, if the gap between the blades becomes large, it will cause a tear and the broken surface of the paper (3) will be damaged. If the cut quality is lost and the gap becomes smaller, so-called galling will occur due to contact between the blades, damaging the blades, so the adjustment is extremely delicate and not easy. Moreover, the replacement work at the site of use is troublesome and cannot be easily performed, and the replacement work is also lacking in speed. Furthermore, when the humidity is high, the moisture content of paper increases, or in the case of chemically treated special paper, the moisture content increases, resulting in a disadvantage that the sharpness deteriorates and the life of the blade is shortened due to abrasion of the cutting edge.

(Object of the Invention) This invention has been made in view of the above points, and not only has the advantages of the rotary one type in terms of mechanism etc., but also allows for easy replacement and adjustment. The purpose of this is to allow easy cutting even if the cutting rate is large.

(Structure of the Invention) In order to achieve the above object, the present invention uses a pair of blades in which one of the blades is a fixed blade made of a rigid body, the other blade is a tensioned drivable wire, and this wire is Electricity is applied to generate heat in the wire, and cutting is performed between the two.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIGS. 5 and 6 show the configuration when one embodiment of the present invention is applied to cutting roll paper, and the configuration of the wire side that becomes the other blade.

In FIG. 5, (IIO is a roll of rolled paper, α is a guide roll, αQ is a feed roll, 0η is a pinch roll, and the paper is pulled from the roll 04 by the guide roll α. Between the guided feed rolls (161 and pinch rolls 0'i) (two passes are made, and they are held between the feed rolls α0 and pinch rolls αη.09), electrically conductive material such as Bakelite is A cutter base made of an insulating material, (A) is this cutter base (a rigid fixed blade (lower blade in the illustrated example) as one blade fixed to one, and the above cutter base 09)
Further, each bracket (A) is fixed to one end side with a screw (C), (01), and the shaft of the motor (1) is attached to this bracket (C), (C) →
is rotatably mounted, and a cam (C) is fixed to the shaft (C). Part of this cam (c) (2
5a) is made of a heat-resistant material such as ferrite, and the cutter receiver portion (19a) at the other end of the cutter base α is also made of a heat-resistant material such as ferrite. And a part (25a) of this cam (c)
The cutter holder of the cutter base (19) is the part (19a)
) is installed as the other blade (c), and each cord (c) from the AC power source (c) is connected so that alternating current is applied to this wire (c). It looks like this. That is, the above wire (
C) is made of, for example, piano wire or tungsten wire, and as shown in Figure 6, an end terminal (C) and a wire are fixed at each end by caulking, and the end terminal shaft and the above-mentioned one-way cord (C) are fixed. The terminal 0◇ is connected to the cutter base (the cutter holder of 1 [stock] is fixed to the part (19a), the end terminal (E) and the terminal 0 of the other cord (C) above) is connected to the cam ( It is similarly fixed to part (25a) of (c) with a screw. The above-mentioned sheet of paper α is inserted between such a fixed blade and a wire.

Next, the operation of the above configuration will be explained.

Now, the paper marked α is the feed roll (14) and the pinch roll (
17) Suppose that it is held in between and is in a state where it can be fed out. In this state, when the feed roll 00 is rotated by an external control signal and its drive mechanism, the wound body 04)
Paper θ is extracted from the paper and paper is fed, and after a certain amount of paper has been fed, the feed roll (10) is stopped, and then the paper 0 is cut. , the wire (C) is energized by the AC power supply (C) to generate heat in the wire 〇〇, and the motor (
By rotating the cam (c) using an external control signal, the cam (a) rotates, causing the heated wire frame to descend under tension and press it against the paper 08). At this time, the heat from the wire (c) can instantly dehydrate the portion of the sheet 0 mark to be cut, that is, the water content can be rapidly lowered. In this way, the paper (old paper) is cut by lowering the water content and making it into a scorch state to reduce the cutting load, and then lowering the wire (c) further to cut the paper. Although it is very difficult to cut, since it is cut after reducing its moisture content as described above, it is less affected by humidity and can easily cut even special papers that inherently have a high moisture content.

After cutting is completed in this way,
The motor (c) is driven in reverse to return the wire (a) to its original state as shown in FIG. 5, ready for the next cutting.

Also, if the wire (C) breaks, just remove the cutter base 09) and the screw G2 on the cam (C) and install a new wire C frame configured as shown in Figure 6. , the cost can be significantly reduced compared to conventional systems, and furthermore, it can be easily replaced at the site of use.

(Effects of the Invention) As described above, in this invention, since the blades of the pair of blades can be made of wire, it is inexpensive and can be constructed relatively compactly as the rotary one-type type described above. In addition, the cost in the event of wire breakage is low, and replacement and adjustment can be performed simply and easily, making it easy and quick to replace and adjust at the site of use. It has features such as being able to be easily cut even if the ratio is large.

[Brief explanation of the drawing]

Figures 1 to 4 all show a conventional paper cutting method, Figure 5 is a perspective view of an embodiment of the present invention, and Figure 6 shows the configuration of the wire side as the other blade. It is an enlarged view. Code explanation: 翰・・・Fixed blade (C)・・・Motor (C)・・・Wire □□□・・・
...AC power supply-56: Fig. 1 Fig. 1 Fig. 3 Fig. 2 Fig. 0 Fig. 4

Claims (1)

[Claims] one blade as a fixed blade made of a rigid body; a drivable wire tensioned to perform cutting between the blade;
and means for energizing the wire.