JP2011020270A - Cutting apparatus and printer with cutting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting apparatus capable of avoiding poor conveying such as paper jamming without introducing a cost increase, and surely cutting paper and discharging it in a stable state, and to provide a printer with the cutting apparatus. <P>SOLUTION: The cutting apparatus 20 includes: a fixed blade 21; a paper conveying path 13 for conveying label paper 11; and a movable blade 22 arranged at an opposing position of the fixed blade 21 through the paper conveying path 13, moving back and forth to the fixed blade 21 at the more upstream side of the paper conveying path 13 than the fixed blade 21, and cutting the label paper 11 on the paper conveying path 13 with the fixed blade 21. At the fixed blade 21 side of the paper conveying path 13, on the more upstream side of the paper conveying path 13 than the movable blade 22, a paper pressing part 41 which can be brought into contact with the label paper 11 deformed by being accompanied by the movement of the movable blade 22 when the label paper 11 is cut by moving the movable blade 22 to the fixed blade 21 side is provided with a clearance S to the paper conveying path 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention moves a movable blade toward a fixed blade, and slides the blade edge along the blade edge of the fixed blade, thereby cutting a long paper such as a recording paper disposed between the two blades. The present invention relates to a cutting device and a printer with a cutting device.

  In many cases, a printer that prints on recording paper such as roll paper or label paper is equipped with a cutting device for cutting the printed recording paper portion. The cutting device is disposed at the downstream end portion of the paper conveyance path that reaches the paper exit via the printing position, and the cut piece of the recording paper is discharged from the paper exit. The cutting device includes a scissor type that rotates in a direction in which the movable blade approaches or leaves the fixed blade, and a slide type that reciprocates linearly in a direction in which the movable blade approaches or leaves the fixed blade. .

  Patent Document 1 discloses a printer provided with a cutting device. The cutting device provided in the printer of the same document has a fixed blade provided in the printer main body, a main body cover, and the main body cover facing the fixed blade across the paper conveyance path when the main body cover is closed. A movable blade that cuts the paper in cooperation with the fixed blade by overlapping with the open side of the main body cover on the downstream side of the paper conveyance path in the fixed blade during forward movement. Driving means for reciprocating the movable blade.

Japanese Patent No. 3800891

As described above, in a cutting apparatus having a fixed blade and a movable blade that are opposed to each other with a paper conveyance path therebetween, when the movable blade cuts the paper while moving to the fixed blade side, the conveyance direction of the cut paper Although the front end is pushed in the moving direction by the movable blade and the movable blade is separated from the fixed blade, the front end in the paper transport direction may be in contact with the fixed blade. . If the paper is fed in this state, the paper is conveyed while the end of the paper is in contact with the fixed blade, which may cause a conveyance failure such as a paper jam.
Although it is conceivable to temporarily retract the paper after cutting, if the paper is retracted, the paper may be soiled due to the contact of the paper with the print head. In addition, complicated control for retracting the paper after cutting must be performed, resulting in an increase in cost.

  An object of the present invention is to provide a cutting device and a printer with a cutting device that can eliminate a paper jam and the like without causing an increase in cost, and can reliably cut the paper and discharge it in a stable state. is there.

The cutting device of the present invention capable of solving the above-described problems is provided with a fixed blade, a paper transport path through which paper is transported, and a position opposed to the fixed blade via the paper transport path. And a movable blade that reciprocally moves with respect to the fixed blade upstream of the paper transport path and cuts the paper in the paper transport path together with the fixed blade,
On the fixed blade side of the paper conveyance path, when the movable blade moves to the fixed blade side upstream of the movable blade and cuts the paper, A paper pressing portion capable of contacting the paper deformed with movement is provided with a gap with respect to the paper conveyance path.

  According to the cutting device having this configuration, when the movable blade moves to the fixed blade side and cuts the paper in the paper conveyance path, the paper that is dragged by the movable blade and deformed in the moving direction of the movable blade is The deformation dragged by the movable blade from the point of contact with the paper presser is suppressed. When the movable blade is separated from the fixed blade in this state, the deformation of the front end portion in the paper conveyance direction, which has been slightly deformed, is restored. Thereby, it is possible to avoid a state in which the end portion on the front side in the paper conveyance direction enters the fixed blade side and contacts the fixed blade. Therefore, it is possible to eliminate a paper jam and the like due to the paper being conveyed along the paper conveyance path with the edge of the paper being in contact with the fixed blade without causing an increase in cost. It can be cut and discharged in a stable state.

A printer with a cutting device according to the present invention is a printer including a print processing unit that performs printing on paper, and includes the above-described cutting device that cuts the paper printed by the print processing unit. And
According to the printer with the cutting device having this configuration, the printed paper can be cut and discharged without a conveyance failure such as paper jam.

In the printer with a cutting device of the present invention, the paper pressing unit may be a platen provided facing the print processing unit.
According to the printer with the cutting apparatus having this configuration, since the platen is used as the paper pressing portion, it is not necessary to provide a separate paper pressing portion again, and the cost increase can be suppressed.

(A) is an external appearance perspective view which shows the example of embodiment of the printer with a cutting device which concerns on this invention, (b) is a perspective view of roll paper. It is sectional drawing which shows schematic structure inside the printer with a cutting device of FIG. It is the front view seen from the downstream of the paper conveyance path which shows the structure of a cutting device. It is sectional drawing which shows the structure of a cutting device. It is sectional drawing of the cutting device which shows the mode of cutting of label paper. It is sectional drawing of the cutting device which used a part of platen as the paper pressing part. It is the front view seen from the upstream of the paper conveyance path of the cutting device of another example.

Hereinafter, examples of embodiments of a cutting device and a printer with a cutting device according to the present invention will be described with reference to the drawings.
(overall structure)
As shown in FIG. 1A, a printer 1 with a cutting device includes a printer body 2 having a substantially rectangular parallelepiped shape as a whole. The front surface of the printer body 2 is covered with an upper case 3 and a lower case 4, and a rectangular paper outlet 5 having a predetermined width is formed between them. A paper discharge guide 6 protrudes forward below the paper outlet 5, and an opening / closing lever 7 is disposed on the side of the paper discharge guide 6. An opening of a roll paper storage unit 8 formed inside the printer main body 2 is formed below the paper discharge guide 6 and the opening / closing lever 7 in the lower case 4, and this opening is formed in the opening / closing cover 9. Blocked by When the open / close cover 9 is opened by operating the open / close lever 7, the roll paper 10 can be loaded into the roll paper storage unit 8.

  As the roll paper 10, a long recording paper having a constant width is wound in a roll shape, and a label (die cut label) having a predetermined shape is attached to the surface of a long peeling paper having a constant width at a predetermined interval. Label paper that has been rolled up in a roll shape, a label paper that has a fixed width long label (full surface label) affixed to the surface of a fixed width long release sheet Wrapped ones can be used. In this example, as shown in FIG. 1 (b), a label sheet 11 having a full surface label 11b attached to a peeling mount 11a is wound in a roll shape.

  As shown in FIG. 2, a roll paper storage unit 8 is formed in the center of the printer main body 2 in the printer width direction inside the printer 1 with a cutting device. The roll paper storage unit 8 stores the roll paper 10 in a horizontally placed state facing the printer width direction. The long label paper 11 fed out from the roll paper 10 loaded in the roll paper storage section 8 is drawn obliquely upward and then bent by a curved tension guide 12, and then extends horizontally in the paper. It is conveyed along a paper conveyance path 13 that reaches the outlet 5. The tension guide 12 is biased upward by a spring force, and a predetermined tension is applied to the label paper 11 that has passed through the tension guide 12.

  A portion of the paper conveyance path 13 extending in the horizontal direction is located immediately above the roll paper storage unit 8. An ink jet print head (print processing unit) 14 and a suction platen (platen) 15 are opposed to each other with a certain gap on the paper conveyance path portion 13a, and the print position A of the ink jet print head 14 is defined by the suction platen 15. Has been. The ink jet print head 14 is mounted on a carriage 16, and the carriage 16 reciprocates in the printer width direction by a carriage motor 18 along a carriage guide shaft 17.

  Further, a cut position B is provided on the downstream side of the printing position A. A cutting device 20 is disposed at the cutting position B, and the label paper 11 printed at the printing position A is cut in the width direction at the cutting position B.

  The cutting device 20 includes a fixed blade 21 whose blade edge is directed upward, a movable blade 22 whose blade stripe is directed downward, a movable blade drive mechanism 23, and a paper outlet 5. The paper outlet 5 of the cutting device 20 is the paper outlet 5 of the printer 1 with a cutting device. The fixed blade 21 and the movable blade 22 are arranged such that the blade direction is along the width direction of the printer. The movable blade 22 is located on the upstream side of the paper conveyance path 13, the fixed blade 21 is located on the downstream side, and the paper outlet 5 is located on the downstream side of the fixed blade 21.

  The transport mechanism for transporting the label paper 11 along the paper transport path 13 includes a paper feed roller 25, a feed roller 26, and a paper feed motor and a feed motor that rotationally drive them. The paper feed roller 25 is disposed on the upstream side of the printing position A in the paper transport path 13 and is rotationally driven by a paper feed motor (not shown). A first pressing roller 27 is pressed against the paper feed roller 25 so as to be rotated.

  The feeding roller 26 is for feeding the label paper 11 from the roll paper storage unit 8, and is disposed on the upstream side of the tension guide 12 in the paper conveyance path 13. The feeding roller 26 is rotationally driven by a feeding motor (not shown), and the second pressing roller 28 is pressed against the feeding roller 26 so as to rotate. The second pressing roller 28 is attached to the tip end portion of a pressing lever 29 extending rearward from the lower side of the suction platen 15, and the pressing lever 29 is biased downward by a spring force. The feed roller 26 is biased.

  The label paper 11 drawn from the roll paper 10 loaded in the roll paper storage unit 8 is transported along the paper transport path 13 by the transport mechanism. At the printing position A, printing on the label surface is performed by the inkjet print head 14. At the cutting position B, the cutting of the label paper 11 is performed by the cutting device 20 so as to include the print area. A label having a desired length is issued from the paper outlet 5.

(Cutting device)
FIG. 3 is a schematic configuration diagram showing the fixed blade 21, the movable blade 22, and the movable blade drive mechanism 23 of the cutting device 20.

  The cutting device 20 is of a saddle type. The movable blade 22 has a standby position (a position indicated by a solid line in FIG. 3) where a predetermined gap is formed between the blade edge 22a of the movable blade 22 and the blade edge 21a of the fixed blade 21 by the rotational force of the cutter motor 31. And a cutting end position (position indicated by an imaginary line in FIG. 3) D where the cutting edge 22a of the movable blade 22 and the cutting edge 21a of the fixed blade 21 overlap in the entire range in the printer width direction (blade line direction) (movable) Range) is swung up and down around one end in the printer width direction.

  The movable blade drive mechanism 23 includes a worm gear 33 that is rotationally driven by a transmission mechanism 32 from a cutter motor 31. The worm gear 33 meshes with a worm wheel 35 that is rotatably mounted around the support shaft 34. The rotational motion of the worm wheel 35 is converted into the reciprocating motion of the movable blade 22 in the vertical direction by the crank mechanism.

  The crank mechanism includes a crank pin 36 that is vertically attached to a position off the center of rotation on the circular end surface of the worm wheel 35, and a linear fixed-length slide groove 37 formed on the movable blade 22. The crank pin 36 is slidably inserted into the slide groove 37, and rotates along a circular rotation locus 36A indicated by a one-dot chain line in FIG. 3 as the worm wheel 35 rotates. The length of the slide groove 37 is set so that the crank pin 36 can move following the movement in the vertical direction and the width direction of the printer, and the movable blade 22 is supported at one end thereof. It can turn in the vertical direction about the shaft 38. A coil spring 39 that presses the movable blade 22 toward the fixed blade 21 is attached to the support shaft 38, and the urging force of the coil spring 39 causes a gap between the cutting edge 22 a of the movable blade 22 and the cutting edge 21 a of the fixed blade 21. The pressure contact force is maintained to be equal to or higher than the pressure contact force necessary for cutting the label paper 11.

  When the worm wheel 35 makes one rotation, the movable blade 22 reciprocates once from the standby position C to the cutting end position D, and the label paper 11 positioned between the movable blade 22 and the fixed blade 21 is cut in the width direction. can do.

As shown in FIG. 4, a paper pressing portion 41 is provided on the fixed blade 21 side of the paper conveyance path 13 on the upstream side of the paper conveyance path 13 with respect to the movable blade 22 along the printer width direction. Yes. The paper presser 41 has a pressing surface 41 a on the side of the paper conveyance path 13, and is arranged so that a gap S is left between the paper presser 41 and the paper conveyance path 13.
When the movable blade 22 moves to the fixed blade 21 side and cuts the label paper 11, the label paper 11 that is deformed as the movable blade 22 moves is brought into contact with the pressing surface 41 a of the paper pressing portion 41. It has become.

  The fixed blade 21 is mounted on the opening / closing cover 9 of the lower case 4. When the opening / closing cover 9 is opened, the fixed blade 21 moves together with the opening / closing cover 9 to the front of the printer body 2. The movable blade 22 is disposed on the upper case 3 side. Therefore, when opening the opening / closing cover 9 and setting the roll paper 10, it is possible to easily pull out the label paper 11 fed out from the roll paper 10 between the fixed blade 21 and the movable blade 22.

(Cutting and discharging label paper)
Next, with reference to FIG. 5, how the label paper 11 is cut and discharged from the paper outlet 5 will be described. 5A is a cross-sectional view schematically showing a state in which the label paper 11 has passed the cut position B, and FIG. 5B is a cross-sectional view schematically showing a state immediately after the label paper 11 is cut. FIG. 5C is a cross-sectional view schematically showing a state when the movable blade is returned after the label paper 11 is cut.

  The label paper 11 printed at the printing position A is transported by the transport mechanism until the printing position on the label surface is located downstream of the cutting position B. When the label paper 11 passes the cut position B, the label paper 11 is guided downstream of the paper outlet 5 as shown in FIG.

  When the transport operation is stopped, the movable blade 22 moves from the standby position C to the cutting end position D as shown in FIG. As a result, the crossing position of the fixed blade 21 with the blade edge 21a moves from one end in the printer width direction to the other end, the portion of the label paper 11 positioned between them is cut in the width direction, and the cut piece 11c. Is discharged from the paper outlet 5.

At this time, when the movable blade 22 moves downward to the cutting end position D when the label paper 11 is cut, the label paper 11 is deformed in the moving direction of the movable blade 22 by being dragged by the movable blade 22.
Then, the deformed label paper 11 comes into contact with the pressing surface 41a of the paper pressing portion 41, and deformation that is dragged by the movable blade 22 from the point of contact with the pressing surface 41a is suppressed.

Thereafter, when the movable blade 22 is pulled back to the standby position C, the deformation of the front end in the transport direction of the label paper 11 that has been slightly deformed toward the fixed blade 21 is restored as shown in FIG. Then, the blade is disposed between the blade edge 21 a of the fixed blade 21 and the blade edge 22 a of the movable blade 22 without entering the fixed blade 21 side and coming into contact with the fixed blade 21.
Therefore, when the label paper 11 is subsequently transported by the transport mechanism, the label paper 11 is smoothly fed out to the paper outlet 5 without causing a transport failure such as paper jam due to contact with the fixed blade 21.

  As described above, according to the cutting device of the present embodiment, when the movable blade 22 moves to the fixed blade 21 side and cuts the label paper 11 on the paper transport path 13, it is dragged by the movable blade 22 and is movable. The label paper 11 that is deformed in the moving direction of the blade 22 comes into contact with the holding surface 41a of the paper holding portion 41, and deformation that is dragged by the movable blade 22 from the point of contact with the holding surface 41a is suppressed. When the movable blade 22 is separated from the fixed blade 21 in this state, the deformation of the front end portion in the transport direction of the label paper 11 that has been slightly deformed is restored. As a result, it is possible to avoid a state in which the front end of the label sheet 11 in the conveyance direction enters the fixed blade 21 and contacts the fixed blade 21. Accordingly, it is possible to eliminate a conveyance failure such as a paper jam due to the label paper 11 being conveyed along the paper conveyance path 13 with the end of the label paper 11 being in contact with the fixed blade 21 without increasing the cost. The label sheet 11 can be reliably cut and discharged in a stable state.

  And according to the printer with a cutting device provided with this cutting device, it is possible to cut and discharge the printed label paper 11 without poor conveyance of paper jam or the like.

In addition, as shown in FIG. 6, the platen 15 arranged to face the ink jet print head 14 may be extended to the cutting device 20 side to form the paper pressing portion 41.
In this way, since a part of the platen 15 is used as the paper pressing portion 41, it is not necessary to provide a separate paper pressing portion 41, and the cost increase can be suppressed.
Further, the paper guide for guiding the label paper 11 may be extended to the cutting device 20 side to form the paper presser 41.

  Moreover, in the said embodiment, although arrangement | positioning of the fixed blade 21 and the movable blade 22 was made substantially horizontal, arrangement | positioning of these fixed blade 21 and the movable blade 22 is not limited to horizontal.

(Other embodiment examples)
Next, other types of cutting devices will be described.
FIG. 7 is a front view of a cutting device provided in the printer.

  As shown in FIG. 7, the cutting device 51 includes a fixed blade 53 fixed to the frame 52, and a first movable blade 55 and a second movable blade 56 provided on the cover 54. This is a slide type in which the first and second movable blades 55, 56 move linearly in a reciprocating direction toward and away from the blade 53.

  The first and second movable blades 55 and 56 are formed in a substantially triangular shape, and are disposed on the opposite side of the fixed blade 53 with the paper transport path 13 of the label paper 11 interposed therebetween. In the case of this example, since a portion to be left near the center of the label paper 11 is provided, a slight gap is provided between the first movable blade 55 and the second movable blade 56.

  The end portions of the first and second movable blades 55 and 56 are formed with bulged portions 55 c and 56 c, and these bulged portions 55 c and 56 c run on the fixed blade 53. Further, the blade edges 55 a and 56 a of the first and second movable blades 55 and 56 are formed so as to be inclined by a predetermined angle with respect to the blade edge 53 a of the fixed blade 53. The distance between the blade edge 53 a of the fixed blade 53 and the blade edges 55 a and 56 a of the first and second movable blades 55 and 56 is configured to increase from both ends of the fixed blade 53 toward the center portion. As a result, the cutting edges 55 a and 56 a of the first and second movable blades 55 and 56 that are substantially V-shaped with respect to the cutting edge 53 a of the fixed blade 53 are formed.

Between the 1st and 2nd movable blades 55 and 56, the slide plate 57 which can be slid up and down is provided. The slide plate 57 is connected to the first and second movable blades 55 and 56 via a presser shaft 58. The slide plate 57 is slid up and down by a drive mechanism including a drive motor and a power transmission mechanism (not shown).
When the slide plate 57 slides up and down, the first and second movable blades 55 and 56 reciprocate with respect to the fixed blade 53 as the slide plate 57 slides.

Also in the cutting device 51 having the above configuration, the paper pressing unit 41 is provided on the fixed blade 53 side of the paper conveyance path 13 on the upstream side of the paper conveyance path 13 with respect to the first and second movable blades 55 and 56. It is provided along the direction, and is arranged so that there is a gap S between the sheet conveyance path 13 and the sheet conveyance path 13.
And when the 1st and 2nd movable blades 55 and 56 move to the fixed blade 53 side and cut | disconnect the label paper 11, the label which deform | transforms with the movement of the 1st and 2nd movable blades 55 and 56 is carried out. The paper 11 comes into contact with the pressing surface 41 a of the paper pressing portion 41.

  In the present embodiment having such a configuration, the slide plate 57 is slid in the direction of the arrow by the drive mechanism, and the first and second movable blades 55 and 56 arranged at the standby position C are directed toward the cutting end position D. When moved, the portion of the label paper 11 located between the fixed blade 53 and the first and second movable blades 55 and 56 is cut in the width direction.

At this time, when the first and second movable blades 55 and 56 move downward to the cutting end position D when the label paper 11 is cut, the label paper 11 is dragged by the first and second movable blades 55 and 56. The first and second movable blades 55 and 56 are deformed in the moving direction.
Then, the deformed label paper 11 comes into contact with the pressing surface 41a of the paper pressing portion 41, and the deformation that is dragged by the first and second movable blades 55 and 56 from the point of contact with the pressing surface 41a is suppressed.

Thereafter, when the first and second movable blades 55 and 56 are pulled back to the standby position C, the deformation of the front end portion in the transport direction of the label paper 11 that has been slightly deformed to the fixed blade 53 side is restored, Without entering the fixed blade 53 side and coming into contact with the fixed blade 53, the blade is disposed between the blade edge 53 a of the fixed blade 53 and the blade edges 55 a and 56 a of the first and second movable blades 55 and 56. .
Accordingly, when the label paper 11 is subsequently transported by the transport mechanism, the label paper 11 is smoothly fed to the paper outlet 5 without causing a transport failure such as a paper jam due to contact with the fixed blade 53. That is, the label paper 11 can be reliably cut and discharged in a stable state.

  In the above-described embodiment, an example in which the first and second movable blades 55 and 56 are provided has been described. However, the movable blade may be one continuous in the printer width direction. .

  1: printer with cutting device, 11: label paper (paper), 13: paper transport path, 14: inkjet print head (printing processing unit), 15: platen, 20, 51: cutting device, 21, 53: fixed blade, 22: movable blade, 41: paper presser, 55: first movable blade (movable blade), 56: second movable blade (movable blade), S: gap

Claims (3)

A fixed blade;
A paper transport path through which paper is transported;
The paper is disposed at a position facing the fixed blade via the paper conveyance path, and reciprocates with respect to the fixed blade on the upstream side of the paper conveyance path with respect to the fixed blade, along with the fixed blade. A cutting device comprising a movable blade,
On the fixed blade side of the paper conveyance path, when the movable blade moves to the fixed blade side upstream of the movable blade and cuts the paper, A cutting apparatus, wherein a paper pressing portion capable of contacting the paper deformed with movement is provided with a gap with respect to the paper conveyance path. A printer having a print processing unit for printing on paper,
A printer with a cutting device, comprising the cutting device according to claim 1, which cuts the paper printed by the print processing unit. The printer according to claim 2,
The printer with a cutting device, wherein the paper pressing unit is made of a platen provided facing the print processing unit.

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