JPH0596489A - Cutter device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to cut paper smoothly while achieving downsizing. [Structure] The movable blade (31) is fixed to the fixed blade (21) when the paper is cut.
A pressing means (41) for pressing against the fixed blade (21) is provided.
The movable blade (31) is attached to the blade portion (22) of the fixed blade (21).
An inclined guide portion (5) for guiding to is provided, and the blade portion (32) of the movable blade (31) is formed in a V shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device applied to a printer or the like.

[0002]

2. Description of the Related Art Conventionally, electronic devices such as printers and cash registers are often provided with a cutter device for cutting printed paper.

A conventional cutter device, as shown in FIG.
It is generally configured to include a cutter base 11, a fixed blade 21A and a movable blade 31.

Here, the cutter base 11 is the fixed blade 2
It is a member for attaching 1A or the like to a body frame (not shown) of an electronic device (for example, a printer). The cutter base 11 is formed with a sheet passage opening 2 for inserting the sheet P. In addition, a fixed blade 21A is fixed on the cutter base 11 so as to face the blade portion 22A of the sheet passage opening 2.

On the other hand, the movable blade 31 is moved toward the fixed blade 21A by a drive mechanism (not shown) or the like to move the sheet passage opening 2
It is configured to cut the sheet P coming out from the sheet in cooperation with the blade portion 22A of the fixed blade 21A.

The guide portion 3 is provided at one end of the movable blade 31.
9 is provided. The guide portion 39 is formed so as to protrude toward the fixed blade 21 by a predetermined length from the blade portion 32 of the movable blade 31, and is always in contact with the upper surface of the fixed blade 21.

However, when the movable blade 31 is moved toward the fixed blade 21A by using the drive mechanism, the blade portion 32 of the movable blade 31 is guided by the guide portion 39 and is fixed.
The fixed sheet 21A is lifted onto the sheet of paper P without hitting A or the like.
It shears in cooperation with the blade portion 22A.

[0008]

By the way, in the above-mentioned conventional cutter device, the fixed blade 21A and the movable blade 3 are provided.
When the sheet P cooperates with 1 to cut the sheet P, if the sheet P is thick, stiff, or damp, a large cutting resistance force acts on the movable blade 31 to separate it from the fixed blade 21A. It may happen. When such a situation occurs, a paper cut failure, a paper jam, or the like will be caused.

In recent years, there has been a strong demand for downsizing of the cutter device in order to expand the field of use. However, in the conventional structure, as shown in FIG.
Since the guide portion 39 is formed at one end of 1,
The movable space L with respect to the moving stroke S of the movable blade 31
And it is extremely difficult to achieve miniaturization. Therefore, it is possible to remove the guide portion 39 from the movable blade 31. However, in this case, when the movable blade 31 is moved toward the fixed blade 21A, the blade portion 32 of the movable blade 31 collides with the blade portion 22A of the fixed blade 21A and the sheet P cannot be cut smoothly. There is a risk.

The inclination angle θ of the blade portion 32 of the movable blade 31
If 2 is reduced, the moving stroke S becomes shorter, but an excessive cutting resistance force acts on the movable blade 31 at the time of cutting, so that a situation in which the sheet cannot be smoothly cut occurs.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a cutter device capable of smoothly cutting a paper while achieving downsizing.

[0012]

SUMMARY OF THE INVENTION According to the present invention, there is provided a fixed blade having a sheet passage opening and having a blade portion facing the sheet passage opening, and a fixed blade which is moved toward the blade portion of the fixed blade. A movable blade having a V-shaped blade portion that cuts the sheet coming out of the sheet passage opening in cooperation with the blade portion of the fixed blade, and a pressing unit that presses the movable blade against the fixed blade when cutting the sheet. The fixed blade is provided with an inclined guide portion that guides the movable blade to the blade portion of the fixed blade.

[0013]

In the present invention, the movable blade is moved toward the blade portion of the fixed blade in order to cut the sheet coming out from the sheet passage opening of the fixed blade. Then, the movable blade is smoothly guided by the inclined guide portion to the blade portion of the fixed blade, and cuts the sheet while being pressed against the fixed blade by the pressing means.

As described above, since the movable blade is pressed against the fixed blade by the pressing means at the time of cutting, the movable blade is not separated from the fixed blade even if the paper is thick, stiff or moist. Therefore, the sheet can be smoothly cut by the movable blade and the fixed blade.

Further, since the movable blade is smoothly guided to the blade portion of the fixed blade by the inclined guide portion provided on the fixed blade, it is not necessary to provide the guide portion on the movable blade as in the conventional case. Therefore, the movable space can be reduced with respect to the moving stroke of the movable blade.

Further, since the blade portion of the movable blade is formed in a V shape, the inclination angle of the blade portion can be made relatively large even if the moving stroke is shortened, and smooth sheet cutting is ensured. .

As a result, it is possible to smoothly cut the paper while achieving downsizing.

[0018]

An embodiment of the present invention will be described with reference to the drawings.

The cutter device according to the present embodiment is applied to a printer, and as shown in FIGS. 1 and 2, includes a cutter base 11, a fixed blade 21, a movable blade 31, and a pressing means (41). There is.

The same components as those shown in FIGS. 3 and 4 are designated by the same reference numerals, and the description thereof will be omitted or simplified.

Here, the cutter base 11 is provided with a fixed blade 21 and a movable blade 31.

The fixed blade 21 is provided with a sheet passage opening 2, and a blade portion 22 is formed facing the sheet passage opening 2. More specifically, the edge portion 22 of the fixed blade 21 is formed by subjecting the side edge portion of the sheet passage opening 2 of the fixed blade 21 to predetermined processing. The fixed blade 21 has a movable blade 3
An inclined guide portion that guides 1 to the blade portion 22 of the fixed blade 21 is provided.

In this embodiment, the inclined guide portion of the fixed blade 21 has inclined surfaces 5 formed on both sides of the sheet passage opening 2.
5 are formed. The inclined surfaces 5, 5 of the fixed blade 21
Is inclined by a predetermined angle θ with respect to the plane portion 23 of the fixed blade 21 in front of FIG. 1.

Further, the blade portion 32 of the movable blade 31 is formed in a V-shape having inclination angles θ1 and θ1 as shown in FIG.

Further, the pressing means is means for pressing the movable blade 31 against the fixed blade 21 when cutting the paper.

In the present embodiment, the pressing means is formed of a leaf spring 41 having elasticity. The leaf spring 41 is
A base end portion thereof is attached to the cutter base 11 by a fastening means such as a screw 45, and has a tip pressing portion 42 and a central pressing portion 43. The leading end pressing portion 42 of the leaf spring 41 is formed so as to hold down the leading end portion of the movable blade 31 at the time of cutting the paper, and the central holding portion 43 holds down the center of the movable blade 31. As a result, the movable blade 31 is pressed with an average force, and moves smoothly with respect to the fixed blade 21.

Next, the operation will be described.

To cut the sheet P coming out of the sheet passage port 2 of the fixed blade 21, the movable blade 31 is moved to the blade portion 2 of the fixed blade 21.
Move toward 2. Then, the movable blade 31 is smoothly guided by the inclined guide surfaces 5 and 5 to the blade portion 22 of the fixed blade 21, and the tip pressing portion 42 of the leaf spring 41 and the central pressing portion 4 are moved.
The sheet P is cut while being pressed against the fixed blade 21 with an average force by 3.

As described above, since the movable blade 31 is pressed against the fixed blade 21 by the leaf spring 41 at the time of cutting, even if the paper P is thick, stiff, or damp, it cannot be separated from the fixed blade 21. Absent. Therefore, the sheet P is smoothly cut by the movable blade 31 and the fixed blade 21.

Since the movable blade 31 is smoothly guided to the blade portion 22 of the fixed blade 21 by the inclined guide surfaces 5 and 5 provided on the fixed blade 21, the conventional guide portion is fixed to the movable blade 31. It is not necessary to provide the movable blade 31 and the movable space L can be reduced with respect to the moving stroke S of the movable blade 31.

Further, since the blade portion 32 of the movable blade 31 is formed in a V shape, even if the moving stroke S is shortened, the inclination angle (θ1, θ1) of the blade portion 32 can be made relatively large. ， Can cut the paper smoothly.

According to this embodiment, however, the fixed blade 31 having the sheet passage opening 2 and the blade portion 32 formed facing the sheet passage opening 2 and the blade portion 32 of the fixed blade 31 are formed. A movable blade 31 having a V-shaped blade portion 32 that cuts the sheet P that has been moved toward and has come out of the sheet passage opening 12 in cooperation with the blade portion 22 of the fixed blade 21, and the movable blade 31 when cutting the sheet. And a pressing means (leaf spring 41) for pressing the fixed blade 21 against the fixed blade 21, and the fixed blade 21 is provided with an inclined guide portion (inclined guide surfaces 5, 5) for guiding the movable blade 31 to the blade portion 22 of the fixed blade 21. Since it has a different structure, the paper P can be smoothly
Can be cut.

Further, since the pressing means is formed by the leaf spring 41 having the tip pressing portion 42 and the central pressing portion 43, the movable blade 31 is fixed by the pressing portions 42 and 43 with an average force during cutting. The movable blade 31 can be smoothly moved relative to the fixed blade 21.

Although the cutter device is applied to the printer in the above embodiment, it may be applied to other electronic devices (for example, cash register). further,
It may be used alone.

Further, although the inclined guide portion is formed by the inclined guide surfaces 5 and 5 of the fixed blade 21, the movable blade 31 is formed by the blade portion 3 thereof.
Any configuration may be used as long as 2 can be smoothly guided to the blade portion 22 of the fixed blade 21 without colliding with the blade portion 22.

[0036]

According to the present invention, a pressing means for pressing the movable blade against the fixed blade at the time of cutting the sheet is provided, and the fixed blade is provided with an inclined guide portion for guiding the movable blade to the blade portion of the fixed blade. Since the blade part of the blade is formed in a V shape,
The paper can be cut smoothly while achieving downsizing.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an essential part of an embodiment of the present invention.

FIG. 2 is a plan view showing a main part of one embodiment.

FIG. 3 is a perspective view showing a schematic configuration of a conventional cutter device.

FIG. 4 is a diagram for explaining a moving stroke and a movable space of a movable blade of a conventional cutter device.

[Explanation of symbols]

 2 paper passage port 5 inclined guide surface (inclined guide part) 21 fixed blade 31 movable blade 41 leaf spring (pressing means)

Claims (1)

[Claims] 1. A fixed blade having a sheet passage opening and having a blade portion facing the sheet passage opening; and a sheet moved toward the blade portion of the fixed blade and emerging from the sheet passage opening. A movable blade having a V-shaped blade portion for cutting in cooperation with the blade portion of the fixed blade, and a pressing unit that presses the movable blade against the fixed blade when cutting a sheet, A cutter device comprising an inclined guide portion for guiding a movable blade to a blade portion of the fixed blade.