JPH10309837A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and low cost cutting device for a recording paper capable of solving a problem that the paper tends to be creased at the cutting portion and hard to cut straight because the recording paper receives a force in the cutting direction of the paper width by virtue of movement of a rotational blade and a problem that a rigidity, i.e., a nerve of the paper becomes small in a high temperature and high humidity condition so that the use is limited, and of reducing the limitation in terms of the thickness of the paper and the using environment. SOLUTION: This device comprises a rotational blade 2 that cuts a recording paper 15 in the paper width direction, a carriage 3 that supports the rotational blade 2 and reciprocates in the paper width direction, a frame 10 that movably supports the carriage 3 and a paper pressing means 11 that is attached to the carriage 3 and presses the recording paper 15 against the frame 10. As a result of the above structure, it is possible to prevent a cutting portion of the recording paper from being creased during the cutting process and to cut it straight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a recording sheet in a printer or the like, and more particularly to a cutting device for improving the cutting property of a recording sheet.

[0002]

2. Description of the Related Art Conventionally, as a mechanism for cutting recording paper,
For example, one shown in FIG. 5 is disclosed in Japanese Patent Laid-Open No. 2-92660. FIGS. 5A and 5B are a plan view and a perspective view of a printer device having a cutter blade mechanism that moves a recording sheet in the width direction of the recording sheet. FIG. 5 (c)
FIG. 3 is an enlarged front view of a main part when the recording paper is cut.

According to Japanese Patent Application Laid-Open No. 2-92660, the rotary blade 14 supported by the carriage 16 moves along the fixed blade 13 together with the carriage 16 in FIGS. The cutting operation of the recording paper 15 is performed.

[0004]

However, in the cutting apparatus having the above-mentioned conventional configuration, the recording paper 15 receives a force in the cutting direction of the paper width by the movement of the rotary blade 14, so that FIG.
As described above, there is a problem that wrinkles are easily formed in the cutting portion and it is difficult to cut straight.

Further, the cutting of the wrinkled recording paper is apt to be incomplete, and the paper feeding function is sometimes disabled. This has caused a paper jam (paper jam) in the worst case. This is particularly noticeable when the rigidity of the recording paper, that is, the paper stiffness, is weak or weak, such as when the recording paper is thin or when it is used in a high-temperature, high-humidity environment. There was a problem such as there is.

The present invention solves such a conventional problem,
When cutting the recording paper, the recording paper at the cutting section is less likely to wrinkle and can be cut straight, reducing the possibility of paper jams (paper jams) and further restricting the thickness of the recording paper and the operating environment. It is an object of the present invention to provide a small cutting device.

[0007]

According to the present invention, there is provided a cutting apparatus for cutting a recording sheet in a sheet width direction, a carriage supporting the cutter blade and reciprocating in a sheet width direction. A frame for movably supporting the carriage, and a paper pressing means mounted on the carriage and pressing recording paper against the frame.

According to the present invention, when the recording paper is cut, the recording paper at the cutting portion is unlikely to be wrinkled, can be cut straight, and the possibility of paper jam (paper jam) is reduced.
Further, a cutting device that can reduce restrictions on the thickness of the recording paper and the use environment can be obtained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a cutter blade for cutting recording paper in a paper width direction, a carriage supporting the cutter blade and reciprocating in a paper width direction, and moving the carriage A frame that freely supports,
Since it has a structure of a paper pressing means which is mounted on the carriage and presses the recording paper against the frame, the recording paper at the cutting portion is unlikely to be wrinkled when the recording paper is cut, so that it is possible to cut the paper straight. This has the effect of reducing the possibility of (paper jam) and reducing restrictions on the thickness of the recording paper and the operating environment.

According to a second aspect of the present invention, in the first aspect of the present invention, the paper holding means for pressing the recording paper against the frame is a roller and has a rotatable structure. When cutting the paper, the recording paper at the cutting section is less likely to wrinkle, and it can be cut straight, reducing the possibility of paper jams (paper jams) and reducing restrictions on the thickness of the recording paper and the operating environment. Has an action.

According to a third aspect of the present invention, in the second aspect, the cutter blade for cutting the recording paper in the paper width direction is a rotary blade, and the rotational force of the roller pressing the recording paper against the frame is provided. Has been provided with a transmission means for transmitting to the rotary blade, the recording paper of the cutting portion is less likely to wrinkle when cutting the recording paper, it is possible to cut straight,
This has the effect of reducing the possibility of paper jam (paper jam) and reducing the restrictions on the thickness of the recording paper and the use environment.

According to a fourth aspect of the present invention, in the first aspect of the present invention, since the paper pressing means for pressing the recording paper in the frame direction has an elastic structure, the recording paper is cut. Sometimes the recording paper at the cutting section is less likely to wrinkle, and can be cut straight, which reduces the possibility of paper jams (paper jams) and has the effect of reducing restrictions on the thickness of the recording paper and the operating environment. .

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG. 1A is a plan view showing a configuration of a cutting apparatus according to a first embodiment of the present invention.
(B) is a perspective view of the cutting device in the embodiment.
FIG. 2 is an enlarged cross-sectional view of a main part of a recording paper cutting portion showing a relationship between a roller 11, a frame 10, a carriage 3, and a recording paper 15 as paper pressing means in the embodiment.

1 and 2, reference numeral 1 denotes a plate-shaped fixed blade,
Reference numeral 2 denotes a rotary blade that cuts the recording paper along the fixed blade 1. Reference numeral 3 denotes a carriage that rotatably supports the rotary blade 2. Reference numeral 4 denotes a shaft that supports the carriage 3 so that it can move linearly. Reference numeral 5 denotes a carriage 3.
, A cross-lead screw for driving the motor in the paper width direction, a motor 6 as a driving source, a gear train 7 for transmitting a driving force of the motor,
8 is a home position sensor for detecting the origin position of the carriage, 9 is an elliptical pin fitted into the groove of the cross lead screw 5 and transmitting the movement of the cross lead screw 5 to the carriage 3, 10 is the fixed blade 1 and the shaft 4
Is a frame for fixing the motor 6 and the cross lead screw 5 rotatably, and for fixing the home position sensor 8, and a roller 11 as a paper pressing means. Reference numeral 15 denotes a recording paper.

As shown in FIG. 2, the rotary blade 2 and the roller 11 are rotatably supported by pins 3a of the carriage 3, and the recording paper 15 is located between the fixed blade 1 and the rotary blade 2. The roller 11 is pressed against the frame 10 in the direction of arrow A.

The operation of the embodiment will be described below with reference to FIGS. In FIG. 1, the driving force of a motor 6 rotates a cross-lead screw 5 by means of a gear train 7 and reciprocates the carriage 3 by a pin 9 fitted in a groove of the cross-lead screw. By this reciprocating movement, the rotary blade 2 rotates along the fixed blade 1 and cuts the recording paper.

At this time, as shown in FIG. 2, since the recording paper 15 is pressed against the frame 10 by the rollers 11 in the direction of the arrow, the recording paper 15 moves even if it receives a force in the paper width direction due to the movement of the rotary blade 2. There is no, and the cut part does not wrinkle.
Therefore, it is cut straight like the recording paper 15a.

As described above, according to the first embodiment, when the recording paper is cut, the recording paper at the cutting portion is unlikely to be wrinkled, can be cut straight, and the possibility of paper jam (paper jam) is reduced. Further, there is obtained an advantageous effect that restrictions on the thickness of the recording paper and the use environment can be reduced.

In the present embodiment, the material of the roller 11 is not specified, but by using an elastic material such as rubber, a coil spring or the like which is an elastic material for pressing other than the roller becomes unnecessary. Further, since the coefficient of friction with the paper increases, the recording paper 15 is securely fixed to the frame 10, and the same or more effects can be obtained.

(Embodiment 2) FIG. 3 is a sectional view of a main part showing the configuration of a rotary blade of a cutting device and a roller as paper holding means according to a second embodiment of the present invention. In FIG. 3, the description of the same reference numerals as those in FIGS.
a is a bellows-like rotation transmitting means.

Since the rotation (force) transmitting means 11a elastically couples between the roller 11 and the rotary blade 2, the rotary blade 2 is forcibly rotated by the rotation of the roller 11 while the carriage 3 moves.

Therefore, the rotation of the rotary blade 2 is constantly transmitted during the movement of the carriage 3, and the rotation of the rotary blade 2 is continued even if dust or the like adheres to the recording paper 15, so that the recording paper 15 is cut smoothly. Further, since the rotary blade 2 also rotates during both reciprocating processes of the carriage 3, the cutting force can be maintained for a long time without a part of the rotary blade 2 being locally worn. Furthermore, since the rotation transmitting means 11a has a bellows shape, even if the roller 11 moves meandering, that is, moves in the thrust direction, the force is absorbed, so that the close contact between the rotary blade 2 and the fixed blade 1 at the cutting point is stabilized. Will be kept.

As described above, according to the second embodiment, the cutting of the rotary blade with respect to the recording paper is sharply performed, and the movement of the roller in the thrust direction to avoid the close contact between the rotary blade and the fixed blade is prevented. It is possible to prevent the recording paper from being wrinkled when cutting the recording paper, making it possible to cut the recording paper straight, reducing the possibility of paper jam (paper jam) and reducing the thickness of the recording paper. The advantageous effect that the restriction of the use environment can be reduced can be obtained.

In the present embodiment, the rotation transmitting means is made of an elastic body. However, if the rotation transmitting means is made rigid and the close contact between the rotating blade and the fixed blade is sufficiently ensured, that is, the rotating blade and the fixed blade are fixed. The same effect can be obtained by fixing the adhesive.

(Embodiment 3) FIG. 4 shows the relationship between a fixed blade 1 and a rotary blade 2, and a relationship between a carriage 3, a frame 10 and a recording paper 15 in a cutting device according to a third embodiment of the present invention. It is a principal part expanded sectional view of a part.

In FIG. 4, reference numerals which are the same as those in FIGS. 1, 2 and 3 are omitted, but reference numeral 12 denotes an elastic paper pressing means provided on the carriage 3. The paper holding means 12
The recording paper 15 is pressed against the frame 10 in the arrow direction B by the leaf spring.

The operation of this embodiment will be described below with reference to FIG. However, the operation of the carriage, the rotating blade,
The operation of the fixed blade and the like are exactly the same as those in the first embodiment, and thus detailed description is omitted.

Since the recording paper 15 in the cutting process is pressed in the direction of arrow B by the frame 10 by the leaf spring 12 as the paper pressing means, it moves even if it receives a force in the paper width direction by the movement of the rotary blade 2. There is no problem, and the cut portion does not wrinkle. Therefore, it is cut straight like the recording paper 15a.

As described above, according to the third embodiment, when the recording paper is cut, the recording paper at the cutting portion is unlikely to be wrinkled, and can be cut straight, thereby reducing the possibility of paper jam (paper jam). Further, there is obtained an advantageous effect that restrictions on the thickness of the recording paper and the use environment can be reduced.

Although the material of the leaf spring 12 is not specified in the present embodiment, a thin plate made of stainless steel or the like or a thin plate made of a thermoplastic resin or the like is suitably used. In particular, if it is a thermoplastic resin, the carriage 3
Since it can be made of the same material as above, integral molding is possible and an economical effect can be obtained.

[0031]

As described above, the cutting device according to the present invention
A cutter blade that cuts recording paper in the paper width direction, a carriage that supports the cutter blade and reciprocates in the paper width direction, a frame that movably supports the carriage, and that is mounted on the carriage and presses the recording paper against the frame. Since the recording paper has a configuration of a paper pressing means that cuts the recording paper, the recording paper at the cutting portion is less likely to be wrinkled when the recording paper is cut, and it is possible to cut the recording paper straight, thereby reducing the possibility of paper jam (paper jam). This has the advantageous effect of reducing restrictions on the thickness of the recording paper and the operating environment.

[Brief description of the drawings]

FIG. 1A is a plan view illustrating a configuration of a cutting device according to a first embodiment of the present invention. FIG. 1B is a perspective view illustrating a configuration of a cutting device according to the first embodiment.

FIG. 2 is an enlarged cross-sectional view of a main part of a recording paper cutting portion in the embodiment.

FIG. 3 is a sectional view of a main part showing a configuration of a rotary blade and a roller of a cutting device according to a second embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a recording paper cutting portion according to a third embodiment of the present invention.

FIG. 5 (a) is a plan view of an apparatus having a conventional cutting mechanism, (b) is a perspective view, and (c) is an enlarged front view of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed blade 2 Rotating blade 3 Carriage 4 Shaft 5 Cross lead screw 6 Motor 7 Gear train 8 Home position sensor 9 Pin 10 Frame 11 Roller 11a Rotation transmission means 12 Leaf spring 15 Recording paper 15a Cut recording paper A Pressing recording paper Direction B Pressing direction of recording paper

Claims (4)

[Claims] 1. A cutter blade for cutting recording paper in a paper width direction, a carriage for supporting the cutter blade and reciprocating in a paper width direction, a frame for movably supporting the carriage, and a recording medium mounted on the carriage and recording. A cutting device having a configuration of paper pressing means for pressing paper against a frame. 2. A paper holding means for pressing a recording paper against a frame is a roller and has a rotatable structure.
The cutting device as described. 3. The rotary blade according to claim 2, wherein the cutter blade for cutting the recording paper in the paper width direction is a rotary blade, and has a transmitting means for transmitting the rotational force of a roller pressing the recording paper to the frame to the rotary blade. Cutting equipment. 4. The cutting apparatus according to claim 1, wherein the paper pressing means for pressing the recording paper in the frame direction has an elastic structure.