JP2016036879A - Cutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter device capable of leaving the vicinity of the end part of paper uncut by one cutting blade thereby to separate the portion left uncut easily and to enhance a using property.SOLUTION: A cutter device 10 for rotating a movable blade 18 on a base end part thereof with respect to a stationary blade 12 thereby to cut paper, comprises a notch 22 formed in the vicinity of the leading end part of the movable blade 18. The movable blade 18 is constituted of a first blade 23 from a base end part thereof to the notch 22, and a second blade 24 from the notch 22 to a leading end part.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cutter device.

  2. Description of the Related Art Conventionally, for example, when printing on roll paper in a printer or the like, a cutter device such as an auto cutter is mounted, and after printing on roll paper, cutting is performed at a predetermined position. In this case, a cutter device that can form uncut portions in part rather than cutting all the roll paper is often used.

  Such a conventional cutter device includes, for example, a fixed blade disposed at the same position as the inkjet head and a movable blade disposed at a position opposite to the inkjet head. Then, the blade edge of the movable blade is formed in a V-groove shape inclined in the direction away from the fixed blade from both ends in the width direction toward the center, and a recess is formed in the center portion in the width direction of the blade edge. There has been disclosed a technique of cutting so as to be left uncut at the center in the width direction of the roll paper by moving it vertically to the fixed blade (see, for example, Patent Document 1).

JP 2011-143601 A

In the technique of the said patent document, a movable blade is moved from a perpendicular direction with respect to a fixed blade, and it cut | disconnects, and uncut residue is formed in the center.
In general, it is easier to use the uncut portion formed on the roll paper at the end of the roll paper.
However, for example, in a scissor-type cutter device, when uncut portions are formed at the end portions, there is a problem in that the uncut length varies due to a shift in the paper feed position of the roll paper. If there is variation in the length of the uncut material in this way, tearing marks will be formed on the roll paper when it is cut off, or a large shredding force will be required, making it impossible to cut off the uncut portion of the roll paper well. Have.
For this reason, there is a cutter device provided with two movable blades as a one-point cutting cutter, but the cutter structure and the drive mechanism are complicated, and there is a problem that the number of parts is increased. .
The present invention has been made in view of the above-described circumstances, and with a single movable blade, an uncut portion can be formed in the vicinity of the end of the paper, and the uncut portion can be easily separated. An object of the present invention is to provide a user-friendly cutter device.

In order to achieve the above object, a cutter device according to the present invention is a cutter device composed of a fixed blade and a movable blade, wherein the movable blade is composed of a distal end portion, a proximal end portion and a notch, The paper is cut by rotating about the base end portion of the movable blade with respect to the fixed blade.
According to this configuration, when the roll paper is cut, uncut portions can be formed by the notches.

Further, in the cutter device according to the invention, the notch is formed in the movable blade, and the movable blade includes a first blade from the base end portion to the notch, and the tip portion from the notch. And a second blade up to.
According to this configuration, when the roll paper is cut, an uncut portion can be formed in the vicinity of the end portion of the movable blade by the notch.

Further, in the cutter device according to the invention, a distance from the base end portion of the first blade to the notch is longer than a distance from the notch to the tip portion of the second blade. It is characterized by.
According to this configuration, when the roll paper is cut, an uncut portion can be formed in the vicinity of the end portion of the movable blade by the notch.

The cutter device according to the invention is characterized in that the first blade and the second blade are in contact with each other at a predetermined angle.
According to this configuration, when the movable blade is rotated, the first blade of the movable blade intersects the fixed blade from the base end portion to the notch, and then the second blade is its tip portion. Can be crossed from to notch

Further, in the cutter device according to the invention, the movable blade intersects the fixed blade from the base end portion of the first blade toward the notch, and then the second blade. It intersects from the tip part.
According to this configuration, when the movable blade is rotated, the first blade starts to intersect with the fixed blade from the base end portion of the movable blade, and the intersection by the first blade is completed. After that, the second blade can start crossing from the tip of the movable blade.

Further, in the cutter device according to the invention, the second blade is formed so as to be inclined with respect to the fixed blade from the notch toward the tip of the second blade. It is characterized by.
According to this configuration, the second blade intersects with the fixed blade at one point from the tip thereof, and is similar to the intersecting state from the base end of the first blade to the notch. In addition, the second blade can be crossed from the tip.

Moreover, it is a cutter apparatus of the said invention, Comprising: The front-end | tip part of the said 2nd blade starts crossing with respect to the said fixed blade in the position corresponding to the said front-end | tip part of the said 2nd blade of the said fixed blade. In this case, a guide portion for guiding the tip portion of the second blade is formed.
According to this configuration, after completion of the first blade crossing, when the tip of the second blade starts to cross the fixed blade, the tip of the second blade is guided by the guide portion. Can do.

It is a perspective view which shows the internal structure of a printer. It is a top view of the printer which shows operation | movement of a cutter apparatus. It is an enlarged plan view of a cutter apparatus. It is an enlarged plan view which shows 2nd Embodiment of a cutter apparatus. It is an enlarged plan view which shows 3rd Embodiment of a cutter apparatus. It is a side view of the cutter apparatus shown in FIG. It is an enlarged plan view of a cutter apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of a cutter device according to the present invention. FIG. 1 is a perspective view showing an internal configuration of a printer to which a cutter device is applied, and shows a state where a cover of a cutter frame is opened. FIG. 2 is a plan view showing the operation of the cutter device, and FIG. 3 is an enlarged view of a fixed blade and a movable blade portion.

In this embodiment, the printer 1 records an image on a roll paper (not shown) as paper according to control of an external device such as a host computer, and cuts the roll paper by a predetermined length, thereby receiving a receipt. It is a thermal printer to be issued.
As shown in FIG. 1, the printer 1 includes a main body frame 2 made of, for example, metal. Above the main body frame 2, an openable / closable cover frame 3 and a cutter device 10 including a cutter frame 11 are provided. The cover frame 3 is attached to the main body frame 2 so as to be openable and closable around the support shafts 4 provided on both sides of the rear upper end of the main body frame 2.

  As shown in FIG. 1, a storage portion 5 that stores roll paper is formed inside the main body frame 2. Although not shown, a plate-like lid is attached to the cover frame 3 so as to cover the cover frame 3, and when the cover frame 3 is opened, an opening formed on the upper surface of the storage portion 5 is exposed. On the other hand, when the cover frame 3 is closed, the opening of the storage portion 5 is closed. That is, the cover frame 3 is configured to function as an open / close cover that opens and closes the opening of the storage portion 5 in a state where the lid is attached.

Moreover, as shown in FIG. 1, in this embodiment, the fixed blade 12 is arrange | positioned in the edge part by the side of the cutter apparatus 10 in the upper surface of the cover frame 3. As shown in FIG. The fixed blade 12 is made of, for example, metal and is formed of a long plate-like plate member that reaches both sides of the cover frame 3. A blade portion 12 a is formed on one side of the fixed blade 12, and the fixed blade 12 is disposed at the end of the cover frame 3 so that the blade portion 12 a faces the cutter device 10.
As shown in FIG. 1, cutter positioning portions 13 are formed at both ends of the fixed blade 12. In the cutter positioning unit 13, the recesses formed at both ends of the fixed blade 12 and the support members provided at the positions corresponding to the recesses at both ends of the cover frame 3 are engaged with each other with respect to the cover frame 3. The fixed blade 12 is configured to be positioned. The fixed blade 12 is pressed against the surface of the cover frame 3 by two pressing springs 14 fixed to the cover frame 3, and thereby fixed to the cover frame 3.
Further, a slit-shaped discharge port 17 for conveying and discharging the roll paper is provided between the blade portion 12 a of the fixed blade 12 and the frame main body 15 of the cutter frame 11.

On the other hand, a movable blade 18 is provided on the bottom surface 15a of the frame body 15 of the cutter frame 11 so as to intersect the fixed blade 12 and cut the roll paper. The movable blade 18 is rotatably supported on a support shaft 19 provided at the base end portion at one end portion of the cutter frame 11.
In addition, a coil spring 20 whose upper end is locked by a push nut attached to the support shaft 19 is provided around the support shaft 19. The movable blade 18 is pressed against the bottom surface 15 a of the frame body 15 of the cutter frame 11 by the coil spring 20. An elongated hole 21 that extends in the longitudinal direction of the movable blade 18 and drives the movable blade 18 is provided at a substantially central portion of the movable blade 18.

As shown in FIG. 1, driving means 30 for driving the movable blade 18 is provided on the back surface of the cover 16 of the cutter frame 11. Specifically, the drive means 30 includes a drive motor 31 attached to the back surface of the cover 16, and a worm gear 32 is attached to the rotation shaft of the drive motor 31. A worm wheel 33 that meshes with the worm gear 32 is disposed on the back surface of the cover 16, and a crank pin 34 that engages with the long hole 21 of the movable blade 18 protrudes from the worm wheel 33. The
Then, as shown in FIG. 2, the drive motor 31 is rotationally driven in a state where the movable blade 18 is located at the standby position (the position indicated by the two-dot chain line in FIG. 2), whereby the worm wheel 33 is When rotating in the direction, the movable blade 18 rotates in the direction of arrow A. Then, after reaching the position closest to the fixed blade 12 (the position indicated by the solid line in FIG. 2), it rotates in the direction of arrow B and returns to the standby position again. With this series of operations, the blade portion 18a of the movable blade 18 intersects the blade portion 12a of the fixed blade 12, and the roll paper is cut as the fixed blade 12 and the movable blade 18 intersect. Configured.

  In the present embodiment, as shown in FIG. 3, a notch 22 is formed at a predetermined position of the distal end portion of the movable blade 18. The movable blade 18 includes a first blade 23 from the base end portion of the movable blade 18 to the notch 22 and a second blade 24 from the notch 22 to the distal end portion. The depth dimension of the notch 22 is formed such that the bottom of the notch 22 does not contact the fixed blade 12 with the movable blade 18 being closest to the fixed blade 12. Thus, even when the movable blade 18 intersects the fixed blade 12, only the portion where the notch 22 is formed is not cut, and the roll paper is cut into a state in which a part of the roll paper is connected as an uncut portion. Configured to be able to.

Further, the movable blade 18 is installed so that the blade portion thereof is inclined or warped so that the distal end portion of the movable blade 18 is positioned slightly below the fixed blade 12 with respect to the base end portion of the movable blade 18. The By installing in this way, when the movable blade 18 rotates with respect to the fixed blade 12, the intersection starts from the base end side of the movable blade 18 to the fixed blade 12, and the movable blade 18 rotates. As the angle advances, the intersection position of the movable blade 18 with respect to the fixed blade 12 is configured to gradually move in the direction of the notch 22. Accordingly, the movable blade 18 always comes into contact with the fixed blade 12 at only one point, and the fixed blade 12 and the movable blade 18 are configured to perform cutting with a scissors type.
In the present embodiment, after the first blade 23 of the movable blade 18 intersects the fixed blade 12 and the intersection position moves from the base end portion to the edge of the notch 22, the second blade 24 is moved. Is configured to cross from the edge of the notch 22 and move to the tip. That is, after the first blade 23 of the movable blade 18 intersects the fixed blade 12, the second blade 24 intersects the fixed blade 12, leaving the roll paper uncut at its end, Configured to cut.

Next, the operation of this embodiment will be described.
In this embodiment, the worm gear 32 is rotationally driven by rotating the drive motor 31 while the movable blade 18 is in the standby position, and the worm wheel 33 meshed with the worm gear 32 is moved. Driven by rotation. As the worm wheel 33 rotates, the crank pin 34 is driven to rotate together, and the rotation of the crank pin 34 causes the movable blade 18 to rotate in the direction of arrow A in FIG. The
By this operation, the movable blade 18 intersects the fixed blade 12 from the base end side of the first blade 23, and the position of the movable blade 18 intersecting the fixed blade 12 gradually increases as the movable blade 18 rotates. It is configured to move in the direction of the notch 22.

Then, after the crossing position moves from the base end of the first blade 23 of the movable blade 18 to the edge of the notch 22 with respect to the fixed blade 12, the second blade 24 intersects from the edge of the notch 22. Then, the crossing position moves to the tip. Thereby, the uncut portion by the notch 22 is formed in the vicinity of the end portion of the roll paper, and the other portions are cut.
Thereafter, when the worm wheel 33 rotates once, the movable blade 18 is rotated in the direction of arrow B in FIG. 2 and returned to the standby position.

As described above, in the present embodiment, in the scissor type cutter device 10, the notch 22 is formed between the first blade 23 and the second blade 24 of the movable blade 18. When the roll paper is cut, an uncut portion can be formed near the end of the movable blade 18. Then, by forming the notch 22 between the first blade 23 and the second blade 24, even when a deviation of the roll paper feeding position occurs, a notch with a constant width dimension is always formed. can do. As a result, when the uncut portion is cut off, tear marks are not formed on the roll paper, and a large shredding force is not required, and the uncut portion of the roll paper can be cut off appropriately.
Further, since a single uncut portion having a constant width can be formed by one movable blade 18, the structure is simple and the number of parts can be reduced.

Next, a second embodiment of the present invention will be described.
FIG. 4 is a plan view of the fixed blade 12 and the movable blade 18 showing a second embodiment of the present invention. The same parts as those in the first embodiment will be described with the same reference numerals.
In the present embodiment, as shown in FIG. 4, the shape of the movable blade 18 is changed. That is, in the present embodiment, a fixed angle is provided between the blade portion 23a of the first blade 23 of the movable blade 18 and the blade portion 24a of the second blade 24, and the first blade The blade portion 23a of the 23 and the blade portion 24a of the second blade 24 are formed so as to have a gentle V shape.

By forming in this way, when the movable blade 18 is rotated, the movable blade 18 intersects the fixed blade 12 from the base end side of the first blade 23 of the movable blade 18, and the movable blade 18 rotates. As the angle advances, the crossing position of the movable blade 18 with respect to the fixed blade 12 gradually moves in the direction of the notch 22. Then, after the crossing position moves from the base end portion of the first blade 23 of the movable blade 18 to the end edge of the notch 22 with respect to the fixed blade 12, the second blade 24 intersects from the tip portion and cuts. The intersection position moves to the edge of the notch 22.
That is, in the present embodiment, the first blade 23 starts to intersect the fixed blade 12 from the base end portion of the movable blade 18, and after the intersection by the first blade 23 is completed, the second blade The blade 24 is configured to start crossing from the tip of the movable blade 18.
The angle formed by the blade portion 23a of the first blade 23 of the movable blade 18 and the blade portion 24a of the second blade 24 intersects the fixed blade 12 by the first blade 23 as described above. As long as the second blade 24 starts crossing from the tip of the movable blade 18 after the above is completed, any angle may be set.

  As described above, also in the present embodiment, the notch 22 is formed between the first blade 23 and the second blade 24 of the movable blade 18 in the scissor type cutter device 10 as in the above-described embodiment. Thus, when the roll paper is cut, an uncut portion can be formed near the end of the movable blade 18. Even when a roll paper feed position shift occurs, it is possible to always form an uncut portion having a constant width dimension. As a result, when the uncut portion is cut off, tear marks are not formed on the roll paper, and a large shredding force is not required, and the uncut portion of the roll paper can be cut off appropriately. Further, since a single uncut portion having a constant width can be formed by one movable blade 18, the structure is simple and the number of parts can be reduced.

Next, a third embodiment of the present invention will be described.
FIG. 5 is a plan view of the fixed blade 12 and the movable blade 18 showing the third embodiment of the present invention, and FIG. 6 is a side view of the fixed blade 12 and the movable blade 18 showing the third embodiment of the present invention. is there. The same parts as those in the above embodiments will be described with the same reference numerals.
In the present embodiment, as shown in FIGS. 5 and 6, the shape of the movable blade 18 in the second embodiment shown in FIG. 4 is further changed.
That is, in this embodiment as well, as in the second embodiment, a fixed angle is provided at an angle formed by the blade portion 23a of the first blade 23 of the movable blade 18 and the blade portion 24a of the second blade 24. The blade portion 23a of the first blade 23 and the blade portion 24a of the second blade 24 are formed to have a gentle V shape.
Furthermore, in the present embodiment, a step 25 is formed in the portion of the movable blade 18 where the notch 22 is formed so that the second blade 24 is lower than the first blade 23. Due to the step 25, the second blade 24 is formed so as to be inclined with respect to the fixed blade 12 from the notch 22 toward the tip of the movable blade 18. The height at the edge of the notch 22 of the first blade 23 and the height at the tip of the second blade 24 are formed to be substantially the same height.

  By forming in this way, the first blade 23 of the movable blade 18 intersects the fixed blade 12 from the base end side to the notch 22, and then the second blade 24 intersects from the distal end portion. The crossing position moves to the edge of the notch 22. Since the second blade 24 is formed so as to be inclined, the second blade 24 intersects the fixed blade 12 while making contact with the fixed blade 12 at one point from the tip. Therefore, the 2nd blade 24 can be made to cross from the front-end | tip part similarly to the crossing state from the base end part of the 1st blade 23 to the notch 22. FIG.

  As described above, also in the present embodiment, the notch 22 is formed between the first blade 23 and the second blade 24 of the movable blade 18 in the scissor type cutter device 10 as in the above-described embodiment. Thus, when the roll paper is cut, an uncut portion can be formed near the end of the movable blade 18. Even when a roll paper feed position shift occurs, it is possible to always form an uncut portion having a constant width dimension. As a result, when the uncut portion is cut off, tear marks are not formed on the roll paper, and a large shredding force is not required, and the uncut portion of the roll paper can be cut off appropriately. Further, since a single uncut portion having a constant width can be formed by one movable blade 18, the structure is simple and the number of parts can be reduced.

Next, a fourth embodiment of the present invention will be described.
FIG. 7 is a plan view of the fixed blade 12 and the movable blade 18 showing the fourth embodiment of the present invention. The same parts as those in the above embodiments will be described with the same reference numerals.
In this embodiment, as shown in FIG. 7, the shape of the fixed blade 12 in the third embodiment shown in FIGS. 5 and 6 is further changed.
Also in the present embodiment, as in the second and third embodiments, the blade portion of the first blade 23 of the movable blade 18 and the blade portion of the second blade 24 are gently V-shaped. Formed to be. Further, a step 25 is formed in a portion where the notch 22 of the movable blade 18 is formed, and the second blade 24 becomes higher than the fixed blade 12 from the notch 22 toward the tip of the movable blade 18. It is formed so as to be inclined. The height at the edge of the notch 22 of the first blade 23 and the height at the tip of the second blade 24 are formed to be substantially the same height.
Further, in the present embodiment, the distal end portion of the second blade 24 of the movable blade 18 is located with respect to the stationary blade 12 at a position corresponding to the distal end portion of the second blade 24 of the movable blade 18. When the crossing is started, a guide portion 26 that guides the distal end portion of the second blade 24 is formed. The guide portion 26 is configured by a shoulder-like portion that slightly protrudes from the blade portion of the fixed blade 12 toward the movable blade 18.

  When the notch 22 is formed in the movable blade 18, the tip of the second blade 24 starts to intersect the fixed blade 12 after the first blade 23 of the movable blade 18 intersects the fixed blade 12. At this time, the one-point contact of the movable blade 18 with respect to the fixed blade 12 is interrupted once by the notch 22. However, since the guide portion 26 is formed on the fixed blade 12, after the intersection of the first blade 23 is completed, the tip of the second blade 24 starts to intersect the fixed blade 12. The leading end portion of the second blade 24 can be guided by the guide portion 26. As a result, the second blade 24 can smoothly cross the fixed blade 12.

  As described above, also in the present embodiment, the notch 22 is formed between the first blade 23 and the second blade 24 of the movable blade 18 in the scissor type cutter device 10 as in the above-described embodiment. Thus, when the roll paper is cut, an uncut portion can be formed near the end of the movable blade 18. Even when a roll paper feed position shift occurs, it is possible to always form an uncut portion having a constant width dimension. As a result, when the uncut portion is cut off, tear marks are not formed on the roll paper, and a large shredding force is not required, and the uncut portion of the roll paper can be cut off appropriately. Further, since a single uncut portion having a constant width can be formed by one movable blade 18, the structure is simple and the number of parts can be reduced.

  The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Printer, 10 ... Cutter apparatus, 11 ... Frame for cutter, 12 ... Fixed blade, 18 ... Movable blade, 22 ... Notch, 23 ... 1st blade, 24 ... 2nd blade, 25 ... Step, 26 ... Guide part, 31 ... drive motor.

Claims (7)

A cutter device composed of a fixed blade and a movable blade,
The movable blade is composed of a distal end portion, a proximal end portion and a notch,
A cutter device, wherein the paper is cut with respect to the fixed blade by rotating about the base end portion of the movable blade.   The notch is formed in the movable blade, and the movable blade is composed of a first blade from the base end to the notch and a second blade from the notch to the tip. The cutter device according to claim 1.   The distance from the said base end part of the said 1st blade to the said notch is longer than the distance from the said notch of the said 2nd blade to the said front-end | tip part, The Claim 1 or Claim 2 characterized by the above-mentioned. The cutter apparatus as described in.   The cutter device according to claim 2, wherein the first blade and the second blade are in contact with each other at a predetermined angle.   The movable blade intersects with the fixed blade from the proximal end portion of the first blade toward the notch, and then intersects with the distal end portion of the second blade. Item 5. The cutter device according to Item 4.   6. The cutter according to claim 5, wherein the second blade is formed to be inclined with respect to the fixed blade from the notch toward a tip portion of the second blade. apparatus.   The tip of the second blade when the tip of the second blade starts to intersect the fixed blade at a position corresponding to the tip of the second blade of the fixed blade. The cutter device according to any one of claims 2 to 6, wherein a guide portion for guiding the portion is formed.

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