JP2663920B2 - Recording paper cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter for recording paper, and more particularly to a cutter for recording paper for cutting a roll of recording paper used in a serial printer for recording on recording paper. Related to the device.

[0002]

2. Description of the Related Art Conventionally, as this kind of serial printer with a cutter, for example, there is one described in Japanese Patent Laid-Open No. 2-212177. FIG. 2 shows a conventional example. 2, a serial printer includes a print head 51 fixed to a support member 53 and a moving direction of the print head 51 facing a print output surface 51A of the print head 51 (a direction perpendicular to the plane of FIG. 2). ), And a platen 52 provided along the printing mechanism. Symbol 53
Denotes a paper transport path for transporting the recording paper 100, and reference numeral 5
Reference numerals 4A and 54B denote sheet transport rollers.

A support member 53 has a print head 51 as described above.
The cutter 54 is provided on the surface on the opposite side to the above. The front end of the cutter 54 is biased by a solenoid mechanism 55 so as to be able to reciprocate toward the recording sheet 100 described above. Then, when necessary, the solenoid mechanism 55 is operated to lower the cutter 54 in the lower part of FIG. 2, whereby the recording paper 100 is cut.

[0004]

However, the serial printer with a cutter in the above-mentioned conventional example has a cutter 5.
Since the solenoid mechanism 55 is used for taking in and out of the solenoid valve 4, the solenoid mechanism 55 must be continuously energized at the time of cutting, so that there is a disadvantage that the load on the power supply increases.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording paper cutter device in which the disadvantages of the prior art are improved, and in particular, the load on the power supply is reduced, thereby saving energy. .

[0006]

According to the first aspect of the present invention,
A guide rail is disposed in the direction orthogonal to the traveling path of the rolled recording paper in a direction orthogonal to the traveling path, one and the other side plates provided at both ends of the guide rail, and along the guide rail. It includes a moving body that is reciprocally movable and equipped with a print head, and a cutter that is mounted on the moving body.

[0007] A cutter urging mechanism for pushing the cutter toward the roll-shaped recording paper is provided on the movable body.

The cutter urging mechanism includes a cutter guide portion for guiding the cutter to reciprocate toward the paper surface of the roll-shaped recording paper, and a cutter provided in the guide portion for applying the cutter to the roll-shaped recording paper. A push cam having a function of pushing the cutter toward the same and holding the cutter at the pushed position, and a spring biasing the cutter in a direction away from the roll-shaped recording paper are provided. The operation of the pressing cam is urged by the above-mentioned one and the other side plates.

According to the second aspect of the present invention, the pressing cam includes an inclined protrusion that pushes the cutter toward the roll-shaped recording paper, and one that is integrated with the inclined protrusion and moves together with the inclined protrusion. A cam guide for guiding the pressing cam to move in the same direction as the moving body of the moving body, which is constituted by the other sliding portion, is provided on the moving body,
The configuration is adopted.

According to the third aspect of the present invention, the length of the sliding portion of the pressing cam is longer than the length of the moving body within a range in which the inclined protruding portion of the pressing cam can press the cutter against the cutter. Is formed. At the same time, the above-mentioned inclined protrusion is provided at a position where it comes into contact with one side plate and pushes out the cutter, and an operation is brought into contact with the other side plate to push back the cutter to its original position.

[0011]

[Operation] First, when a normal printing operation is performed,
Recording device 2 on the carriage 3 reciprocates the print range S _0.

Next, when the sheet cut command signal S _C is input, the moving range of the carriage 3 is changed to the roll-shaped recording paper 100.
Is changed controlled in a wide stroke S ₂ than the width dimension.
In this case, when the carriage 3 is moved to one side, one sliding portion 13B of the pressing cam 13 abuts on one side plate 5, whereby the pressing cam 13 relatively moves on the carriage 3 as shown in FIG. Move to the left of. Along with the movement to the left, the cutter 10 is pushed up in the upward direction in FIG. 1 (on the paper surface side of the roll-shaped recording paper 100) against the above-mentioned original position return spring 14, and the pressing cam 13 is inclined at this pushed up position. It is held at the tip of the projection 13A.

Subsequently, when the carriage 3 is moved in the other direction in this state, the carriage 3 is pressed by the cutter guide 12 on the carriage 3 and the cutter 10
In the state of crossing with 00, the sheet is transported together with the carriage 3 in the other direction (direction A in FIG. 1), whereby the roll-shaped recording paper 100 is cut.

When the carriage 3 is further moved in the same direction, the other sliding portion 13C of the pressing cam 13 is moved.
Abuts on the other side plate 6, whereby the pressing cam 13 relatively moves on the carriage 3 in one direction. In this case, since the cutter 10 is held at a fixed position by the cutter guide portion 12 on the carriage 3 and is urged to return to the original position by the original position return spring 14, the pressing cam 13 moves to the right. Inclined protrusion 1 with
The holding state at the distal end portion of the 3A is released, whereby the cutter 10 returns to the original position (retracted state).

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a serial printer will be described below with reference to FIG.

In FIG. 1, reference numeral 100 denotes a roll-shaped recording paper, and reference numeral 2 denotes a recording device as a print head. On the opposite side of the recording device, the recording device 2 is mounted on a carriage 3 as a moving body via a roll-shaped recording paper 100. A guide rail 4 is provided along the printing surface of the roll-shaped recording paper 100 in the width direction thereof. The carriage 3 is mounted on the guide rail 4 so as to be reciprocally movable. The carriage 3 is provided with a cutter 10 for cutting the roll-shaped recording paper 100.

The guide rail 4 has both ends held by one and the other side plates 5 and 6. On the moving body, the cutter 10 described above is rolled on the recording paper 100.
A cutter biasing mechanism 11 that pushes out toward the side is provided. The cutter urging mechanism 11 includes a cutter guide 12 for guiding the cutter 10 to reciprocate toward the paper surface of the roll-shaped recording paper 100, and a cutter disposed in the cutter guide 12. Press cam 13 having a function of extruding the sheet 10 toward the above-mentioned roll-shaped recording paper 100 and holding the cutter 10 at the pushed position.
And a coil spring 14 for urging the cutter 10 in a direction away from the roll-shaped recording paper 100.

The pressing cam 13 is connected to the cutter 10 described above.
1A is provided at the center, and sliding parts 13B and 13C are provided extending left and right in FIG.
The sliding portions 13B and 13C constitute a cam base. Here, one side of the protrusion 13A (left side in FIG. 1)
Form a cam inclined surface 13a. Corresponding to this, the corner on the pressed side of the cutter 10 described above is cut obliquely as shown in FIG.

In the present embodiment, the length of the pressing cam 13 including the sliding portions 13B and 13C in the moving direction (the length in the left-right direction in FIG. 1) is larger than the length of the carriage 3 in the moving direction. Is also set long. In this embodiment, the pressing cam 13 is configured such that the carriage 3 is connected to the one side plate 5.
The one sliding portion 13B (or the other sliding portion 13C) abuts on the other side plate 6 (or the other side plate 6) so that the side plate 5
(Or the side plate 6), whereby the operation of the pressing cam 13 is executed.

In this case, the pressing cam 13 has its length and its position on the inclined protruding portion 13A so that the cutter 10 can be pushed out when the above-mentioned one sliding portion 13B comes into contact with the one side plate 5. Has been identified. The length of the other sliding portion 13C is specified in advance so that the cutter 10 comes off the inclined protruding portion 13A when the other sliding portion 13C comes into contact with the other side plate 6 described above. .

When the cutter 10 comes off the inclined projecting portion 13A, the cutter 10 returns to the original position as shown in the actual battle on the right side of FIG. It has become.

Reference numeral 15 denotes one cam guide for guiding the reciprocating movement of the pressing cam 13. Further, the pressing cam 13
The other cam guides 16 and 17 are provided on the opposite side of the one cam guide 15 with a predetermined space therebetween. Then, the other two cam guides 16,
Reference numerals 17 are arranged at a predetermined interval K as shown in FIG. The interval K is determined by the cam guide 16,
17 shows a movement stroke of the pressing cam 13 regulated by 17.

Further, reference numeral 20 denotes a carriage position control unit for specifying the movement stroke of the carriage 3.
Reference numeral 20A denotes a position sensor for positioning the carriage 3. The position sensor 20A is provided on the carriage 3, and position information to be read by the position sensor 20A is displayed on the guide rail 4 in advance.

The position information from the position sensor 20A is constantly sent to the carriage position control unit 20. As a result, the carriage position control unit 20
In the normal case, in order to execute a printing operation by the recording device 2, the above-mentioned carriage 3 is driven and controlled via carriage driving means (not shown).

In FIG. 1, reference numeral S ₁ denotes a printing range of the recording device 2, that is, a carriage 3 controlled by the carriage position control unit 20 during a printing operation.
, And S ₀ indicates the reciprocating range of the recording device 2 on the carriage 3. Moreover, the letter S ₂ designates indicates the movement range of the carriage 3 when cutting the rolled recording paper 100.

Furthermore, in FIG. 1, the width of the rolled recording sheet 100 is described to be the same as the moving range S ₁ of the carriage 3, in the actual product, the carriage 3 without recording on the carriage 3 Reciprocating range S of device 2
₀ is set to be substantially the same as the width of the roll-shaped recording paper 100. Similarly, reciprocating movement range S ₂ of the cutter 10 portion is actually rolled recording paper mentioned above is 1
The stroke between the above-mentioned one and the other side plates 5 and 6 is set so as to exceed the width of 00.

The carriage position control section 20 is provided with a cut command input section 20B for outputting a timing (sheet cut command signal) for cutting the roll-shaped recording paper 100. This cut command input unit 20B, the operator operates, the paper cut command signal S _C directly, in addition to the case of setting input, sent from the main control unit for controlling the operation of the entire apparatus (not shown) a case of inputting a paper cutting command signal S _C is also constructed so as to effectively cope.

Next, the operation of the above embodiment will be described. First, if the normal printing operation is performed, the carriage position controller 20 drives and controls the carriage 3 so that the recording device 2 on the carriage 3 described above reciprocates the print range S _0.

Next, the paper cutting command signal S _C from the cut command input unit 20B is input, the carriage position controller 20 changes the moving range of the carriage 3 to the stroke S ₂ via the carriage driving means (not shown) Control.

In this case, when the carriage 3 is moved rightward in FIG. 1, one of the sliding portions 1 of the pressing cam 13 is moved.
3B abuts on one side plate 5, whereby the pressing cam 13 relatively moves on the carriage 3 to the left in FIG. With this movement to the left, the cutter 10 is pushed up in the upward direction in FIG. 1 (on the paper surface side of the roll-shaped recording paper 100) against the above-mentioned original position return spring 14, and the pressing cam 13 is pushed at this pushed up position. Is held at the tip of the inclined projection 13A.

Subsequently, in this state, the carriage 3 is moved to the position shown in FIG.
Is pushed by the cutter guide portion 12 on the carriage 3, and the cutter 10 is moved to the left (A direction) in FIG. 1 together with the carriage 3 while crossing the roll-shaped recording paper 100. Thereby, the roll-shaped recording paper 100 is cut.

When the carriage 3 is further moved to the left in FIG. 1, the other sliding portion 13C of the pressing cam 13 comes into contact with the other side plate 6, whereby the pressing cam 13 is moved to the carriage. 3 relatively to the right in FIG. On the other hand, since the cutter 10 is held at a fixed position by the cutter guide portion 12 on the carriage 3 and is urged to return to the original position by the original position return spring 14, the cutter 10 moves with the rightward movement of the pressing cam 13. Inclined protrusion 1
The holding state at the distal end portion of the 3A is released, whereby the cutter 10 returns to the original position (retracted state).

[0033]

Since the present invention is constructed and functions as described above, according to this, the cutter mechanism is moved in and out and held by the cam mechanism that operates by using the transfer force of the carriage, so that the paper is cut when the paper is cut. It is possible to provide an unprecedented and excellent recording paper cutter device in which required power consumption can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 2 Recording device as print head 3 Carriage as moving body 4 Guide rail 5, 6 Side plate 10 Cutter 11 Cutter biasing mechanism 12 Cutter guide portion 13 Pressing cam 13A Inclined protruding portion 13B, 13C Sliding portion 15 Cam guide 100 Roll shape Recording paper

Claims (3)

(57) [Claims] 1. A guide rail arranged in a direction orthogonal to a traveling path of a roll-shaped recording paper, and one and other side plates provided at both ends of the guide rail; A moving body equipped with a print head and reciprocally movable along a rail, and a cutter mounted on the moving body, wherein the cutter faces the roll-shaped recording paper on the moving body. A cutter guide mechanism for guiding the cutter to reciprocate toward the surface of the roll-shaped recording paper; and a cutter disposed in the guide section. A pressing cam having a function of pushing out toward the roll-shaped recording paper and holding the cutter at the pushed-out position, and returning to the original position for urging the cutter in a direction away from the roll-shaped recording paper Neto and comprising, recording paper cutter apparatus being characterized in that a structure for biasing by the one and the other side plate of the operation of the pressure cam. 2. An inclined projection for pushing the cutter toward the roll-shaped recording paper, and one and the other sliding parts integrated with the inclined projection and moving together with the inclined projection. 2. A recording paper according to claim 1, wherein a cam guide for guiding the pressing cam to move in the same direction as the moving direction of the moving body is provided on the moving body. Cutter device. 3. The sliding portion of the pressing cam is formed to have a length longer than the length of the movable body within a range in which the inclined projecting portion of the pressing cam can press the cutter against the cutter. 3. The cutter according to claim 2, wherein the inclined protruding portion is provided at a position where the cutter protrudes when the cutter is in contact with one side plate, and the cutter is pushed back to an original position by contacting the other side plate. The recording paper cutter according to the above.