JPH1017199A - Sheet cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet cutter to automatically cut off a use detailed statement and a POS slip, used in an automat in a bank, at intervals of the given number of slips or the intervals of a given distance. SOLUTION: A pair of cutting and support rollers 1 and 2 are synchronously rotated by respective helical gears 3 and 4. In a normal state, the cutting blade 6 of a cutting roller 1 and a support blade 7 of the support roller 2 are displaced by a given rotation angle. When a continuous paper having a given length increased integral number times as long as the peripheral length of the roller is fed, an actuating member 5 moves one helical gear in the direction of the rotary shaft thereof and one roller is moved forward to or backward from the other roller so as to move to a position wherein the cutting blade 6 and the support blade 2 coincide with each other. A forward movement amount or a backward movement amount is decided from the movement length of the moving helical gear and the inclination angle of the tooth of the helical gear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet cutter for cutting continuous paper running continuously at a predetermined length, and more particularly to a sheet cutter for printing a predetermined length of printed matter. The present invention relates to a sheet cutter for cutting into sheets.

[0002]

2. Description of the Related Art For example, when preparing a statement of use or a POS slip used in an automatic teller machine at a bank, a printed material having a predetermined length is repeatedly and continuously printed on continuous paper. It is necessary to perform a perforation, zigzag fold, and separate a predetermined number of sheets at a time. This separation work is performed by counting the number of sheets by counting the number of zigzag folds, marking when a predetermined number of sheets are reached, and manually cutting along the perforation at that position after printing. Was.

[0003] Therefore, it is necessary to constantly monitor when the number of sheets reaches a predetermined number, which requires certainty, but requires extremely simple and cumbersome work.

[0004]

SUMMARY OF THE INVENTION According to the present invention, such a cutting operation can be automated, and the cutting operation can be performed at an arbitrary number of sheets, so that a monitoring operation which is extremely simple but requires certainty is unnecessary. The present invention provides a sheet cutter capable of saving labor.

[0005]

A sheet cutter according to the present invention includes a cutting roller having a cutting blade rotatably supported, a receiving roller having a receiving blade rotating in contact with the cutting roller, and Main and sub helical gears provided on respective rotating shafts of the cutting and receiving rollers so as to rotate the cutting and receiving rollers in synchronization with each other and rotating in mesh with each other, and the main and sub helical gears And an operating member for causing at least one of the gears to reciprocate in the direction of the rotation axis of a roller provided with the helical gear.

[0006] Under normal conditions, the cutting blade of the cutting roller and the receiving blade of the receiving roller are displaced from each other so as not to cut the sheet passing between the two rollers. When at least one of the helical gears is moved in one direction by the operating member, the cutting blade of the cutting roller and the receiving blade of the receiving roller move between the two rollers by moving in a positional relationship in which they are pressed against each other. Cut sheet

In the sheet cutter according to the present invention, when the at least one helical gear is moved in one direction by the operating member, the cutting blade of the cutting roller and the receiving blade of the receiving roller are moved in one direction. A position at which the cutting blade of the cutting roller and the receiving blade of the receiving roller are pressed against each other by advancing or retracting a roller provided with the helical gear by a rotation angle corresponding to the moving amount of the helical gear. It can also be configured to move into a relationship, thereby cutting the sheet passing between the rollers. Then, when the helical gear moved in one direction is returned in the reverse direction, the advanced or retracted roller is retracted or advanced by a rotation angle corresponding to the moving amount of the helical gear. , And the sheet passing between both rollers is not cut.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a sheet cutter according to an embodiment of the present invention has a cutting roller 1 and a receiving roller 2 supported so as to be rotatably contacted with each other.
Main and sub helical gears 3 and 4 attached to one end side of each of rotating shafts 1a and 2a of cutting and receiving rollers 1 and 2 and rotating in mesh with each other.
And at least one of the main and sub helical gears 3 and 4 (the sub helical gear 4 in the figure) and a roller (the receiving roller in the figure) provided with the helical gear. 2)
And an operating member 5 for reciprocating a predetermined length in the direction of the rotation axis.

A cutting blade 6 is provided on the cutting roller 1 so as to extend in the direction of the rotation axis on the outer periphery of the cutting roller. A receiving blade 7 is provided for cutting the continuous paper P (see FIG. 2) moving between 1 and 2. The length of the outer circumference of the cutting and receiving rollers 1 and 2 is the same as the length of the continuous paper P passing between the rollers when both rollers make one rotation (not shown). Is selected as follows.

As shown in FIG. 2, the cutting blade 6 and the receiving blade 7 for cutting the continuous paper P passing between the rollers by pressing against each other during the rotational movement of the rollers 1 and 2 are in a normal state. In the relationship, the positional relationship is shifted by a predetermined rotation angle θ so as not to cut the continuous paper P (in the illustrated case, the cutting blade 6 is advanced or advanced by the rotation angle θ with respect to the receiving blade 7). ). For this reason, the outer peripheral surface of the receiving roller 2 except for the receiving blade 7 can move the continuous paper P passing between the rollers 1 and 2 without pressing against the cutting blade 6 in the misaligned state. , The elastic member 8 is extended.

As shown in the figure, a hydraulic cylinder is used as the actuating member 5, and its one end is rotatably supported by a machine frame or the like by extending and retracting a piston 5a by a predetermined moving distance d. The lever 5b is swung within a certain angle range. At an intermediate position of the swing lever 5b, an operation piece 5c is slidably engaged with a receiving groove 4a provided on one side of the sub-helical gear 4. Thus, when the piston 5a of the operating member expands and contracts, the sub-helical gear 4 moves a predetermined distance D in the rotation axis direction of the receiving roller 2. Thus, the force for driving the piston of the hydraulic cylinder applied to the actuating member 5 may be a relatively small force, thereby making the device more compact.

However, the structure of the actuating member 5 is not limited to the above-described one, and for one reason which will become clear later, during the time until the cutting and the receiving roller completes one rotation, one of the halves is formed. Any mechanism that can complete the movement of the gear in the direction of the rotation axis can be applied, for example, a piston of a hydraulic cylinder is directly connected to a helical gear, or an electromagnetic solenoid or other Or other suitable operating means.

FIG. 3 is a diagram showing the positional relationship between the main and sub helical gears when the sub helical gear is moved in the direction of the rotation axis of the roller. Noh helical gears are shown with the teeth extended on a plane,
The other helical gear is shown with one of its teeth fixed in the rotation direction and moved in the rotation axis direction.

One helical gear X shown by solid lines Xa, Xa
It is assumed that the teeth of the other helical gear Y shown by the solid line Ya mesh with each other in the normal state where the teeth are positioned. When the operating member 5 is operated, the teeth Ya of the helical gear Y move by the distance D and move to the position indicated by the one-dot chain line Yb. At this time, the teeth Xa, Xa of the helical gear X are moved by the circumferential length L and rotate to the positions indicated by the broken lines Xb, Xb. Circumference L
Is the moving distance D and the inclination angle β of the teeth of the helical gears X and Y.
And is determined by The moving direction of the helical gear X with respect to the helical gear Y is determined by the inclination direction of the teeth of the helical gears X and Y and the moving direction of the helical gear Y. In the case shown, assuming that the helical gear X is rotating from the right to the left in the figure, when the helical gear Y is moved downward in the figure, the helical gear X has a circumferential length. It will be delayed or retracted by L. When it is desired to advance or move forward, the movement direction of the helical gear Y can be reversed, or the inclination direction of the gear teeth can be reversed.

The circumferential length L is the aforementioned rotation angle θ (see FIG. 2).
Is set so as to correspond to the circumference. As a result, the rollers 1 and 2 are normally in contact with the cutting blade 6.
And the receiving blade 7 are rotated in a positional relationship shifted from each other by a predetermined rotation angle θ so as not to cut the continuous paper P. When both rollers 1 and 2 are rotated by a predetermined number of rotations, the operating member 5 is operated to move the other roller forward or backward by a predetermined rotation angle with respect to one roller, so that the cutting blade 6 and the receiving blade 7 is shifted to a positional relationship where they are pressed against each other, and the continuous paper P is cut.

[0016]

The sheet cutter of the present invention constructed as described above can cut a continuous sheet at an integral multiple of the circumferential length of the rollers 1 and 2, so that the sheet cutter can be cut off every predetermined number of sheets. Not only can be automated, but also the number of sheets to be put together can be easily changed by changing the number of rotations of the rollers 1 and 2 until the operating member 5 is operated.

[Brief description of the drawings]

FIG. 1 is a plan view showing a sheet cutter according to an embodiment of the present invention.

FIG. 2 is a side view for explaining a positional shift relationship between rollers of the sheet cutter shown in FIG.

FIG. 3 is a schematic diagram for explaining a mechanism for shifting a positional relationship between rollers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting roller 2 Receiving roller 3 Main helical gear 4 Secondary helical gear 5 Working member 5 6 Cutting blade 7 Receiving blade

Claims (2)

[Claims] 1. A cutting roller having a cutting blade rotatably supported, a receiving roller having a receiving blade rotating in contact with the cutting roller, and rotating the cutting and receiving roller in synchronization with each other. A main and sub helical gear provided on each of the rotating shafts of the cutting and receiving rollers so as to move, and rotating in mesh with each other; and at least one of the main and sub helical gears. An operating member for reciprocating the roller having the helical gear in the direction of the rotation axis.In a normal state, the cutting blade of the cutting roller and the receiving roller do not cut the sheet passing between the rollers. The receiving blade and the receiving blade are in a mutually displaced relationship, and the position at which the cutting blade of the cutting roller and the receiving blade of the receiving roller press against each other when at least one helical gear is moved in one direction by the operating member. Seki A sheet cutter for cutting a sheet passing between both rollers by moving the sheet cutter. 2. The cutting blade of the cutting roller and the receiving blade of the receiving roller, when the at least one helical gear is moved in one direction by the operating member, the moving helical gear is moved. The provided roller is moved forward or backward by a rotation angle corresponding to the amount of movement of the helical gear, so that the cutting blade of the cutting roller and the receiving blade of the receiving roller move in a positional relationship in which they are pressed against each other. When the sheet passing between the two rollers is cut and the helical gear moved in one direction is returned in the opposite direction, the advanced or retracted roller moves according to the amount of movement of the helical gear. 2. The sheet cutter according to claim 1, wherein the sheet is relatively displaced by being retracted or advanced by the rotation angle, so that the sheet passing between both rollers is not cut.