JP3186638B2 - Cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording paper cutting device for a printer or the like, and more particularly, to a partial cut method for shortening the recording paper cutting length less than the paper width to prevent the recording paper from scattering, and a recording paper cutting device. The present invention relates to a cutting apparatus capable of switching a full-cut method for cutting an entire width.

[0002]

2. Description of the Related Art Conventionally, as a mechanism for cutting a recording paper into a predetermined length, for example, a mechanism as shown in FIGS. 4A and 4B is disclosed in Japanese Patent Application Laid-Open No. 2-92660. I have. FIGS. 4A and 4B are a plan view and a perspective view of an apparatus having a mechanism for cutting a recording sheet into a predetermined length.

In FIG. 4A, a rotary blade 14 supported by a carriage 16 moves along a fixed blade 13 to cut a recording paper 15. On the upper surface of the carriage 16, a reflection type photosensor 17 having a light emitting element is mounted upward. In addition, home position reflector 1
8 and the cut position reflector 19 are mounted such that the reflection surface is perpendicular to the light emitted from the reflection type photosensor 17.

The sensor digital output of the reflection type photosensor 17 changes from "0" to "1" before and after the carriage 16 moves to the position of the cut position reflection plate 19. Further, when the sensor further moves and passes through the cut position reflector 19, the sensor digital output of the reflection type photosensor 17 changes from "1" to "0".

The recording paper can be cut to a predetermined length by controlling the amount of movement of the carriage 16 based on the change in the sensor digital output. That is, when the sensor digital output changes from "0" to "1", the carriage movement is immediately stopped and immediately reversed, so that the cutting length is slightly shorter than the paper width, and a partial cut is performed to prevent the recording paper from scattering. Further, it is described that when the sensor digital output changes from "1" to "0", the movement of the carriage is stopped and reversed to perform a full cut for cutting the entire width of the recording paper.

[0006]

However, in the cutting apparatus having the above-mentioned conventional construction, it is necessary to stop the movement of the carriage and immediately reverse the rotation by obtaining the output signal from the reflection type photosensor 17. There has been a problem that the drive circuit is complicated and costly, and a high mounting position accuracy of the cut position reflector 19 is required in order to reduce the variation in the cutting length of the recording paper, which requires a large number of assembly steps.

The present invention solves such a conventional problem, and can control the amount of movement of the carriage, that is, the cutting length, without depending on an output signal from a photosensor or the like. It is an object of the present invention to provide a cutting apparatus which does not need to be attached to a position, has a small variation in cutting length, and can simplify the number of assembling steps.

[0008]

According to the present invention, there is provided a cutting apparatus for cutting a recording sheet along a fixed blade in a paper width direction, and a rotatably supporting the round blade cutter. A carriage that reciprocates in the paper width direction, a driving motor for reciprocating the carriage, and a positive rotation direction of the driving motor.
It has a cutting length varying means that can switch the cutting length of the recording paper in the paper width direction to two stages of full cut and partial cut by switching in the reverse direction .

According to the present invention, there is provided a full-cut system in which the moving amount of the carriage, that is, the cutting length can be varied depending on the rotation direction of the motor without depending on the output signal from the sensor by the cut position reflecting plate, and the entire width of the recording paper is cut. An inexpensive and simple control device can be obtained which can be freely switched between a partial cut system in which the cutting length of the recording paper is shorter than the width of the recording paper.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a round blade cutter for cutting a recording sheet in a paper width direction along a fixed blade, a rotatable support for the round blade cutter, and a paper width direction. A reciprocating carriage, a drive motor for reciprocating the carriage, and the drive
The cutting length of the recording paper in the paper width direction can be varied in two stages of a full cut and a partial cut depending on the rotation direction of the recording motor. Therefore, the cut position reflector is not required, the control circuit is simple and inexpensive, the variation of the cutting length is small, and the assembling man-hour can be simplified.

According to a second aspect of the present invention, in the first aspect of the present invention, the cutting length variable means is rotatably driven by a driving motor and has a cross lead screw having a groove intersecting the surface thereof. provided on the carriage consists of a pin which groove engages, the cutter blade provided on the carriage by rotation in the forward direction only of the cross lead screw performs cutting of the whole width direction, to return from the return position to the home position full A partial cut in which a cutting operation is performed, and a cutter blade provided on the carriage stops cutting at a folding position before the folding position provided at a predetermined position in the paper width direction by rotating only in the reverse direction and returns to the origin position. It is designed to perform the operation, so that the predetermined cutting length of the recording paper Since can be varied by switching the rotational direction of the unnecessary cut position reflector is less expensive control circuit is simple, also has the effect of small variations in cut length, and simplification of assembling steps can be reduced.

According to a third aspect of the present invention, in the second aspect of the present invention, a short-cut path that crosses the groove is branched near the turn-back position of the groove of the cross-lead screw and engages with the groove. The rotation of the cross-lead screw in the forward direction only causes the carriage to make a full cut after passing through a first path in which the carriage cuts the entire length in the paper width direction. By changing the rotation direction of the cross-lead screw to a predetermined cutting length of the recording paper, by performing a partial cut by passing through a second path that passes through a short-cut path that cuts while leaving a part of the direction. The cut position reflector is not required, the control circuit is simple and inexpensive, and the variation in cutting length is small. It has the effect of simplifying the number can be reduced.

According to a fourth aspect of the present invention, in the second aspect of the present invention, the cross-lead screw and the
Insert the pin into the groove of the cross lead screw
The printer is equipped with a cutter blade and is
Ridge and an arm that connects the pin and the carriage.
And the arm is used to rotate the cross-lead screw.
Swings by switching the direction, the position of the pin and the
The cross-lead screw adjusts the relative distance of the
Can be changed depending on the rotation direction of
When rotating the shaft only in the forward direction,
The position of the cutter blade is at the position where the
Make a full cut to cut, and rotate only in the reverse direction.
When rotating, the position of the cutter blade is delayed with respect to the position of the pin.
Cutting is performed while leaving a part of the recording paper in the paper width direction.
Because it consists of a cut length varying means for performing Nau partial cut, since the predetermined cutting length of the recording paper can be controlled by switching the rotational direction of the cross lead screw, unnecessary cut position reflector, the control circuit Is simple and inexpensive, the variation in cutting length is small, and the number of assembly steps can be simplified.

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. 2A is an enlarged plan view of a main part of the cross lead screw according to the embodiment.

In FIG. 1, 1 is a plate-shaped fixed blade, 2 is a round blade cutter for cutting recording paper along the fixed blade 1, 3 is a carriage for rotatably supporting the round blade cutter 2, and 4 is a carriage 3. , A cross-lead screw for driving the carriage 3 in the paper width direction, 6 a motor of a driving source, 7 a gear train for transmitting the driving force of the motor, and 8 detecting the origin position of the carriage. The home position sensor 9 is fitted into the groove of the cross-lead screw, and an elliptical pin for transmitting the movement of the cross-lead screw to the carriage, 10 fixes the fixed blade 1, fixes both ends of the shaft 4, Are fixed, the cross lead screw 5 is rotatably supported, and the home position sensor 8 is further fixed.

In FIG. 2A, the solid arrow A indicates the rotation direction of the cross lead screw when cutting the entire width of the recording paper (full cut), and the broken arrow B indicates the direction of the recording paper. This shows the direction of rotation of the cross lead screw when the cutting length is shorter than the paper width of the recording paper (partial cut). Arrows A 'and B' show the relative movement of the pin 9 with respect to the cross-lead screw, and correspond to the rotation directions A and B of the full-cut and partial-cut cross-lead screws, respectively.

Reference numerals 5A and 5B denote two types of grooves at the ends of the cross lead screw, which indicate which path the pin selects depending on the rotation direction A or B of the cross lead screw. is there. Here, FIG.
(B) is an enlarged sectional view of a main part of the path 5B, and shows the path 5B.
“b” indicates that the groove is connected from the groove bottom to the outer diameter of the cross lead screw by a slope.

The operation of this embodiment will be described below with reference to FIGS. In FIG. 1, a gear train 7 to which a driving force is applied by a motor 6 rotates a cross lead screw 5 and converts the reciprocating motion of the carriage 3 by a pin 9 fitted in a groove of the cross lead screw. Due to this reciprocating motion, the round blade cutter 2 becomes the fixed blade 1
And the recording paper can be cut.

At this time, as shown in FIG. 2, when the rotation direction of the cross lead screw is the direction of the solid arrow A,
The pin 9 is driven by the movement of the arrow A ', and at the end of the cross lead screw, the path of 5A is selected, and the operating length of the carriage, that is, the cutting length of the recording paper takes the maximum value. When the rotation direction of the cross-lead screw is in the direction of the dashed arrow B, when the pin 9 reaches the end of the cross-lead screw, the pin 9 selects the more short-cut route 5B and proceeds in the direction of the dashed arrow B '. At this time, the operating length of the carriage, that is, the cutting length of the recording paper is reduced by the difference ΔL between 5A and 5B. Here, if the length of the cross-lead screw and ΔL are appropriately set, a partial cut can be realized in which the cutting length is slightly shorter than the width of the recording paper and uncut portions are intentionally generated.

As described above, according to the first embodiment, the moving distance of the cutter blade can be controlled only by setting the rotation direction of the motor, so that the conventional cut position reflector is not required and the cost is low. Thus, an advantageous effect that variation in the cutting length of the recording paper is small and the number of assembling steps can be simplified can be obtained.

The home position sensor 8 is for detecting the origin of the reciprocating carriage 3, and outputs a timing for stopping the rotation of the motor after the reciprocation of the carriage.

(Embodiment 2) FIG. 3 is an enlarged plan view of a cross lead screw, a main part of a carriage and pins showing a configuration of a cutting apparatus according to a second embodiment of the present invention. In FIG. 3, the description of the same reference numerals as those in FIGS. 1 and 2 is omitted. The pin 9 is supported by an arm 11 that can swing with respect to the carriage 3.
The movement of the arm 11 is restricted by a swing restricting member (not shown). Here, FIG. 3A shows a position where the pin 9 and the arm 11 are moved by the frictional force when the cross lead screw is rotated in the direction of the arrow A, and FIG.
Indicates the position where the pin 9 and the arm 11 have moved due to the frictional force when the cross lead screw is rotated in the direction of arrow B.

The operation of the embodiment will be described below with reference to FIG. 3A, when the cross-lead screw 5 is rotating in the direction of arrow A, the pin 9 fitted in the groove of the cross-lead screw receives frictional force in the same direction as arrow A, and the arm 11 is turned counterclockwise. And the downward direction is regulated by the swing regulating member, and is in the position as shown in the figure. On the other hand, in FIG. 3 (b), the when the cross lead screw 5 is rotated in the arrow B direction, the pin 9 fitted in the groove of the cross lead screw receives a friction force in the same direction as the arrow B, the arm 11 is It swings clockwise and its upward direction is regulated by the swing regulating member.
They are all in a diagonally swung position .

Therefore, although the rotation angles of the cross-lead screw are exactly the same in FIGS. 3A and 3B, the arm 11 swings depending on the rotation direction of the cross-lead screw, so that the operation of the pin 9 is started. The position changes and this becomes the difference ΔL between the positions of the carriage 3 and the round blade cutter 2. In other words, the cross lead screw 5
Since the inclination of the arm 11 with respect to the axial direction of
9 to the carriage-side swing center 11a of the arm
The distance in the axial direction changes to the
Of the arm 11 swingably mounted on the carriage 3
This is also a difference in the position of the side swing center 11a. Here, if the length of the cross-lead screw and ΔL are appropriately set, a full-cut method in which the moving length of the round blade cutter 2, that is, the cutting length is the entire width of the recording paper, and the cutting length is slightly shorter than the entire width of the recording paper. Switching of the partial cut method in which the uncut portion is intentionally generated can be realized by changing the rotation direction of the cross lead screw.

As described above, according to the second embodiment, the predetermined cutting length of the recording paper is switched between the full cut method and the partial cut method by switching the rotation direction of the cross lead screw. Since control is possible, there is no need to use a conventional cut position reflector, the control circuit is simple and inexpensive, and the variation in the cutting length of the recording paper is small, and the advantageous effects of simplifying the assembly man-hour can be achieved. can get.

[0026]

As described above, according to the present invention, the recording paper can be controlled to a predetermined cutting length by switching the rotation direction of the cross-lead screw, and the cutting length of the recording paper can be controlled by the full cut method and the partial cut method. Switching control can eliminate the need for a conventional cut position reflector, simplifying the control circuit and reducing the cost, reducing the variation in the cutting length of the recording paper, and simplifying the number of assembly steps. An effect can be obtained.

[Brief description of the drawings]

FIG. 1A is a plan view showing a configuration of a cutting apparatus according to a first embodiment of the present invention. FIG.

FIG. 2A is an enlarged plan view of a main part of the cross lead screw according to the embodiment; FIG.

FIG. 3A is an enlarged plan view of a main part of a cross lead screw, a carriage, and a pin showing a configuration of a cutting device according to a second embodiment of the present invention;

FIG. 4A is a plan view of a conventional apparatus having a cutting mechanism, and FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fixed blade 2 Round blade cutter 3 Carriage 4 Shaft 5 Cross lead screw 6 Motor 7 Gear train 8 Home position sensor 9 Pin 10 Frame 11 Arm 5A 1st path 5B 2nd path A Cross lead screw rotation direction at full cut A 'Pin movement during full cut B Cross-lead screw rotation direction during partial cut B' Pin movement during partial cut

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B26D 1/18-1/20

Claims (4)

(57) [Claims] A round blade cutter for cutting recording paper in a paper width direction along a fixed blade; a carriage for rotatably supporting the round blade cutter and reciprocating in a paper width direction;
A drive motor for reciprocating the carriage, and a cut length in the paper width direction of the recording paper cut into a full cut and an end portion by switching the rotation direction of the drive motor between a forward direction and a reverse direction. A cutting device comprising cutting length variable means capable of switching to two stages of partial cutting for forming a remaining portion. 2. The cutting device according to claim 1, wherein said cutting means comprises a cross-lead screw rotatably driven by a driving motor and having a groove intersecting the surface thereof, and a pin provided on said carriage and engaging with said groove. performs a full-cut operation forward only the cutter blade provided on the carriage by rotation of the screw is returned from the folded position performs cutting of the entire width to the origin position, provided on the carriage by rotation in the opposite direction only 2. The cutting apparatus according to claim 1, wherein the cutter blade is configured to perform a partial cutting operation in which cutting is stopped at a return position before the return position provided at a predetermined position in the paper width direction and the cutter blade returns to an origin position. 3. branches the path of shortcuts across the groove in the vicinity folded position of the groove of the cross lead screw, the groove and the pin to engage the carriage in the paper width direction by the rotation in the forward direction only of the cross lead screw A full cut is made when passing through a first path that cuts the entire length of the paper, and a second path that passes through a short cut path in which the carriage cuts leaving only a portion in the paper width direction by rotation in the reverse direction only.
3. The cutting device according to claim 2, wherein a partial cut is performed when the cutting device passes through the path. 4. A cross-lead screw, a pin fitted into a groove of the cross-lead screw, a carriage having a cutter blade and arranged to be able to move linearly in the paper width direction, and an arm connecting the pin and the carriage. The arm swings by switching the rotation direction of the cross-lead screw, and the relative distance between the position of the pin and the width of the cutter blade in the paper width direction can be changed according to the rotation direction of the cross-lead screw. When rotating the cutter blade at the position where the position of the cutter blade advances with respect to the pin position, perform a full cut to cut the entire width of the recording paper, and when rotating only in the reverse direction, rotate the cutter blade relative to the pin position. Is a position where the position of the recording paper is delayed. 3. The cutting device according to claim 2, wherein the cutting device is configured to be compliant.