JP2004291603A - Paper ejecting device of rotary cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to drive a rotary cutter and a paper ejecting device by only a single driving motor (a driving motor 11 for cutting) and to provide the paper ejecting device of the rotary cutter whose cost can be reduced and whose ejecting operations can be stabilized. <P>SOLUTION: When a sheet of paper (a tag sheet 7) is cut by a movable blade 10 and a fixed blade 9, an ejecting roller (a driving roller 15 for ejection) is not allowed to rotate but is allowed to rotate after completion of cutting of the sheet 7 by the movable blade 10 and the fixed blade 9. An ejecting pulley 21 which is allowed to rotate by a driving motor 11 is provided. The ejecting pulley 21 does not allow the ejecting roller 15 to rotate when the sheet 7 is cut by the movable blade 10 and the fixed blade 9 but allows the ejecting roller 15 to rotate after completion of cutting of the sheet 7 by the movable blade 10 and the fixed blade 9 and allows single pieces of cut sheet 7 to be transferred. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper ejection device for a rotary cutter, and more particularly to a paper ejection device for a rotary cutter that prints on printing paper or the like, cuts the paper into single-leaf paper, and discharges the paper outside the machine.
[0002]
[Prior art]
A conventional paper ejection device for a rotary cutter will be briefly described with reference to FIGS.
FIG. 4 is a schematic side view of a main part of an arbitrary printer, for example, a thermal printer 1. The thermal printer 1 includes a printing unit 2, a rotary cutter 3 (cutting unit), and a paper discharge device 4.
[0003]
The printing unit 2 has a thermal head 5 and a platen roller 6, and can print predetermined contents on a printing paper sandwiched therebetween, for example, a tag 7 (tag).
A guide plate 8 is provided between the printing unit 2 and the rotary cutter 3 so that the tag 7 can be guided to the rotary cutter 3.
[0004]
FIG. 5 is a schematic front view of the portion of the rotary cutter 3 and the sheet discharging device 4 as viewed from the sheet transport direction. The rotary cutter 3 extends long in the width direction of the tag 7 (horizontal direction in FIG. 5). It has a fixed blade 9 and a movable blade 10, a cutting drive motor 11 (drive motor), and a sensor plate 12.
The fixed blade 9 is fixed to the body of the thermal printer 1.
The movable blade 10 can rotate around the rotating shaft 13 by driving the cutting drive motor 11 to cut the lower tag 7 between the movable blade 10 and the fixed blade 9 at a predetermined pitch.
The sensor plate 12 is coaxially disposed at one end of the rotating shaft 13 of the movable blade 10 and rotates integrally with the movable blade 10. A sensor slit 14 is formed along the rotation direction. In addition, the rotation position of the movable blade 10 is detected by the passage of the light beam by the light receiving / emitting device (not shown) through the sensor slit 14, and the initial position can be set.
[0005]
The paper discharge device 4 includes a discharge drive roller 15, a discharge driven roller 16, and a discharge drive motor 17. The discharge driven roller 16 is in contact with the discharge drive roller 15 with a predetermined pressing force, and can move up and down along a vertically long window 18 formed in the main body of the thermal printer 1.
The lower tag 7 cut and transferred between the discharge drive roller 15 and the discharge driven roller 16 is discharged to the outside of the machine by driving the discharge drive motor 17.
[0006]
In the thermal printer 1, the rotary cutter 3 and the paper discharging device 4 having such a configuration, two motors (the cutting driving motor 11 and the discharging driving motor 17) are used for cutting and discharging the hanging tag 7, so that the cost is reduced. There is a problem of up.
Further, since it is necessary to stably hold the front end and the rear end of the hanging tag 7 to be cut in the transport direction, the driving of the discharge drive motor 17 on the downstream side is performed. The tag 7 is cut by pulling the tag 7 in the discharge direction while nipping the tag 7 by the discharging drive roller 15 and the driven roller 16 for discharging, so that the tag 7 is cut during cutting by the rotary cutter 3. Is also always pulled to the downstream side, so that the cutting surface is poorly cut and a problem may remain in the appearance, or depending on the control of the driving timing of the cutting drive motor 11 and the discharge drive motor 17, There is a problem that the ejection operation of the cut tags 7 cut into single leaves is not stable.
[0007]
[Patent Document 1]
JP-A-1-234276 [Patent Document 2]
JP-A-7-101120
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a paper ejection device of a rotary cutter capable of stabilizing a cutting operation of a tag while suppressing costs.
[0009]
It is another object of the present invention to provide a paper cutter for a rotary cutter which does not perform the operation of discharging and transferring a tag when cutting with a rotary cutter.
[0010]
The present invention also provides a paper cutter for a rotary cutter capable of driving a rotary cutter and a paper discharger with only a single drive motor (a cutting drive motor) to reduce costs and stabilize a discharge operation. That is the task.
[0011]
[Means for Solving the Problems]
That is, the present invention focuses on the fact that the discharge roller is not rotated when cutting the paper by the movable blade and the fixed blade, and the discharge roller can be rotated after the cutting of the paper by the movable blade and the fixed blade is completed. A blade, a movable blade capable of cutting the paper supplied between the fixed blade, a drive motor for driving the movable blade, and a discharge roller for discharging the cut single-leaf paper outside the machine. A discharge pulley that is rotatable by the drive motor, and the discharge pulley includes the discharge roller when the paper is cut by the movable blade and the fixed blade. Without rotating, after the cutting of the paper by the movable blade and the fixed blade, the discharge roller is rotatable, the cut single leaf A paper discharge device of a rotary cutter, characterized in that to enable transport the paper.
[0012]
The discharge pulley may be rotatable coaxially with the movable blade.
[0013]
The discharge pulley can be rotated by the drive motor in synchronization with the movable blade.
[0014]
The discharge pulley may have a cutout formed on the outer peripheral surface thereof, the cutout being capable of controlling the timing of engagement with the discharge roller.
[0015]
The discharge pulley may have, on its outer peripheral surface, a large-diameter portion that can be engaged with the discharge roller and a small-diameter portion that does not engage with the discharge roller.
[0016]
The discharge pulley may have, on an outer peripheral surface thereof, a rotation drive region that can be engaged with the discharge roller, and a rotation invalid region that does not engage with the discharge roller.
[0017]
In the paper discharge device of the rotary cutter according to the present invention, the timing of rotation of the discharge roller can be controlled by the discharge pulley, and when the paper is cut by the movable blade and the fixed blade, the discharge roller does not rotate, and the movable blade and the fixed blade are fixed. After the cutting of the paper by the blade is completed, the discharge roller can be rotated. Therefore, using only a single drive motor (cutting drive motor), the cutting by the rotary cutter without pulling the lower tag at the discharge roller to the downstream side. Actions can be taken.
Therefore, cost reduction, appearance of the cut surface, and stability of paper discharge can be ensured.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a paper ejection device 20 for a rotary cutter according to an embodiment of the present invention will be described with reference to FIGS. However, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.
FIG. 1 is a schematic side view of a main part of a rotary cutter 3 and a thermal printer 1 equipped with the paper discharge device 20, and FIG. 2 is a schematic front view of the rotary cutter 3 and the paper discharge device 20 when viewed from a paper transfer direction. FIG. 3 is an explanatory view showing the state of each step for explaining the operation of the paper discharge device 20 of the rotary cutter 3. The paper discharge device 20 of the rotary cutter 3 includes the discharge roller (discharge roller). It has a driving roller 15 and a driven driven roller 16), and a pulley 21 for discharging.
The discharge pulley 21 is disposed coaxially at one end of the rotating shaft 13 of the movable blade 10 and rotates integrally with the movable blade 10 at a predetermined timing described with reference to FIG. However, as long as the movable blade 10 can rotate in synchronization with the movable blade 10, it is not necessary to be coaxial with the movable blade 10.
[0019]
In the paper discharge device 20, the discharge drive motor 17 (FIGS. 4 and 5) in the conventional paper discharge device 4 is omitted, and the discharge drive roller 15 can be freely rotated similarly to the discharge driven roller 16. At the same time, the movable blade 10, the sensor plate 12, and the discharge pulley 21 can be rotationally driven by a single cutting drive motor 11, and the discharge is performed by the rotation of the discharge drive roller 15 which comes into contact with the discharge pulley 21 with a predetermined pressing force. The driven follower roller 16 can be driven to rotate, and the cut tag 7 in a single-leaf state can be discharged during cutting.
[0020]
The discharge pulley 21 has a large-diameter portion 23 and a small-diameter portion 24 formed adjacent to each other by forming an arc-shaped notch portion 22 over a predetermined circumferential angle on the outer peripheral surface thereof. Are formed in the rotation drive region 25 and the circumferential portion of the small diameter portion 24 is formed in the rotation invalid region 26.
The circumferential length of the rotation drive region 25 is set to a length at which the lower tag 7 can be discharged outside the machine at least in the portion of the discharge drive roller 15 and the discharge driven roller 16 which are rotated by the rotation of the discharge pulley 21. .
The circumferential length of the rotation invalid area 26 is at least a length until the lower tag 7 is cut by the rotation of the movable blade 10.
[0021]
FIG. 3 is a side view separately showing the rotation states of the sensor plate 12, the movable blade 10, and the discharge pulley 21 in the rotary cutter 3 and the paper discharge device 20, and FIG. 3 (2) shows a cutting start position, FIG. 3 (3) shows a cutting end position, FIG. 3 (4) shows a rotation start position of the discharge drive roller 15, and FIG. 5) shows the initial position again.
As shown in FIG. 3, the rotation drive area 25 of the discharge pulley 21 in the paper discharge device 20 can be engaged with a discharge roller (discharge drive roller 15), and can discharge the tag 7.
The rotation ineffective area 26 does not engage with the discharge drive roller 15, and during cutting by the fixed blade 9 and the movable blade 10, the lowering tag 7 by the discharge drive roller 15 and the discharge driven roller 16. Has been stopped.
[0022]
In the rotary cutter 3 and the paper discharge device 20 having such a configuration, the sensor plate 12 detects the initial position of the movable blade 10 at the initial position as shown in FIG. Although the lower tag 7 can pass between the blade 9 and the pulley 21 for discharging, the discharging pulley 21 is in contact (engagement) with the driving roller 15 for discharging, but just before shifting from the rotation driving area 25 to the rotation invalid area 26. It is a state of.
[0023]
As shown in FIG. 3 (2), at the cutting start position where the movable blade 10 starts to contact the fixed blade 9 and cut the lower tag 7, the rotation drive area 25 of the discharge pulley 21 is separated from the discharge drive roller 15. At the same time, the rotation ineffective area 26 faces between the fixed blade 9 and the discharge drive roller 15 in the axial direction of the rotary shaft 13.
[0024]
As shown in FIG. 3 (3), at the cutting end position of the hanging tag 7 by the rotary cutter 3, the hanging tag 7 is cut into a single leaf, and the leading ends thereof are driven by the discharging drive roller 15 and the driven driven roller 16 And held between them.
[0025]
As shown in FIG. 3D, the rotation drive area 25 of the discharge pulley 21 starts to contact the discharge drive roller 15 with a predetermined pressure, and the discharge drive roller 15 and the discharge driven roller 16 start rotating. Then, the held tag 7 starts to be discharged out of the thermal printer 1.
[0026]
As shown in FIG. 3 (5), the discharge of the single leaf tag 7 is completed at the rotation direction end portion of the rotation drive region 25, that is, the boundary portion with the rotation invalid region 26, and the rotary cutter 3 and the paper discharge device therefor are completed. 20 returns to its initial position.
By repeating the above operation, the tag 7 is cut and discharged.
[0027]
Thus, at the time of cutting the tag 7 by the rotary cutter 3, the discharge pulley 21 and the discharge drive roller 15, or the discharge drive roller 15 and the discharge driven roller 16 in the paper discharge device 20 pinch the tag 7. In addition, the cutting operation can be performed independently of the discharging operation, and after the cutting is completed, the hanging tag 7 that has become a single leaf can be transferred in the discharging direction for the first time in the paper discharging device 20. Can be improved, and a stable operation of discharging the lower tag 7 can be realized.
Further, since a single cutting drive motor 11 can be selectively used for the rotary cutter 3 and the sheet discharge device 20 at a required timing, the cost can be reduced.
[0028]
【The invention's effect】
As described above, according to the present invention, a single drive motor is used for the rotary cutter and the paper discharge device by employing a discharge pulley that can engage with the discharge roller of the paper discharge device at a required timing. It can also be used for driving, stabilizing the cutting and discharging operations of paper such as hanging tags and reducing costs.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a main part of a rotary cutter 3 and a thermal printer 1 equipped with a paper discharge device 20 according to an embodiment of the present invention.
FIG. 2 is a schematic front view of the rotary cutter 3 and a sheet discharging device 20 viewed from a sheet transfer direction.
FIG. 3 is an explanatory diagram showing a state of each process for explaining an operation of the sheet discharging device 20;
FIG. 4 is a schematic side view of a main part of a conventional thermal printer 1.
FIG. 5 is a schematic front view of the rotary cutter 3 and the sheet discharge device 4 viewed from the sheet transfer direction.
[Explanation of symbols]
1. Thermal printer (Figs. 1 and 3)
2 Printing unit 3 Rotary cutter (cutting unit)
4 Paper ejection device of rotary cutter 3 Thermal head 6 Platen roller 7 Lowering tag (tag, printing paper)
8 guide plate 9 fixed blade 10 movable blade 11 drive motor for cutting (drive motor)
12 Sensor Plate 14 Sensor Slit 13 Rotary Axis 15 Discharge Drive Roller (Discharge Roller)
16 Discharge driven roller (discharge roller)
17 Ejection drive motor (drive motor)
18 Vertical Window 20 Paper Ejecting Device for Rotary Cutter 3 (Embodiment, FIGS. 1, 2 and 3)
Reference Signs List 21 Pulley 22 for discharge 22 Notch 23 of pulley 21 for discharge 21 Large diameter portion 24 of pulley 21 for discharge Small diameter portion 25 of pulley 21 for discharge 21 Rotation driving area 26 in circumference of large diameter portion 23 Circumference of small diameter portion 24 Invalid area in the section

Claims (6)

A fixed blade,
A movable blade capable of cutting the paper supplied between the fixed blade,
A drive motor for driving the movable blade,
A discharge roller for discharging the cut single-leaf paper outside the machine, and a paper discharge device of a rotary cutter having:
A discharge pulley rotatable by the drive motor is provided,
This discharge pulley
When cutting the paper by the movable blade and the fixed blade, without rotating the discharge roller,
A sheet discharge device for a rotary cutter, wherein the discharge roller is rotatable after the movable blade and the fixed blade finish cutting the sheet, and the cut single-leaf sheet can be transferred. The paper discharge device of a rotary cutter according to claim 1, wherein the discharge pulley is rotatable coaxially with the movable blade. The paper discharge device of a rotary cutter according to claim 1, wherein the discharge pulley is rotatable by the drive motor in synchronization with the movable blade. The discharge pulley has an outer peripheral surface,
2. The paper discharge device for a rotary cutter according to claim 1, wherein a notch portion is formed to control a timing of engagement with the discharge roller. The discharge pulley has an outer peripheral surface,
A large diameter portion engageable with the discharge roller,
The paper discharge device for a rotary cutter according to claim 1, further comprising a small diameter portion that does not engage with the discharge roller. The discharge pulley has an outer peripheral surface,
A rotation drive area engageable with the discharge roller,
The paper discharge device for a rotary cutter according to claim 1, further comprising: a rotation invalid area that does not engage with the discharge roller.

Images