JP2013116537A - Rotary cutter device and printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify switching between a stab-cut and full-cut by a rotary cutter device.SOLUTION: A rotary cutter device includes: a rotary blade having a blade part; a fixed blade having a blade part and disposed opposite the rotary blade via a conveyance path for a cutting object; a rotary blade holding part rotatably holding the rotary blade by transmitting power from a power part; and a fixed blade holding part which positions the blade part of the fixed blade at a slight angle from a parallel position relative to the blade part of the rotary blade so that the blade part of the rotary blade is engaged with the blade part of the fixed blade and which holds the fixed blade so that the engagement position is movable with the rotation of the rotary blade. The fixed blade holding part can change the holding position on the fixed blade between a partial cutting position in which an end point of the engagement position between the blade part of the rotary blade and the blade part of the fixed blade is on the cutting object and a full cutting position in which the end point of the engagement position between the blade part of the rotary blade and the blade part of the fixed blade can totally cut the cutting object by the engagement.

Description

  Embodiments described herein relate generally to a rotary cutter device and a printing device.

  In general, in a receipt printer, a facsimile machine, or the like, which is a printing device that uses long paper such as receipt paper, the paper cutting device for cutting the paper after printing to an appropriate length is viewed from the printing unit in the downstream direction of paper conveyance. There are many things on the side. As an example of such a paper cutting device, a linear plate-like rotary blade having a length extending over the entire width of the paper is rotated with respect to the fixed blade and meshed like a ridge so that the blades can be separated from each other. There is a rotary cutter device that cuts an object to be cut (for example, a receipt paper). The rotary cutter device achieves reliable cutting of a cutting object while having a simple structure.

  By the way, for example, when considering application of such a rotary cutter device to a receipt printer, the long paper is not cut into a full length (full cut) but is left uncut for a length that can be easily cut by hand. A stub cut (partial cut) may be required. For example, when two copies of the same content are continuously printed, and the border is partially cut, the function of a stub is provided and used as a meal ticket at a restaurant.

  In the conventional rotary cutter device, switching between the stub cut and the full cut as described above is performed by exchanging the stub cut rotary blade and the full cut rotary blade.

  However, the conventional rotary cutter device has the following problems. The conventional rotary cutter device has a problem that it takes time to replace the rotary blade when switching between the stub cut and the full cut, and the maintainability is poor.

  A rotary cutter device according to an embodiment includes a rotary blade having a blade portion, a fixed blade that has a blade portion and is disposed to face the rotary blade via a conveyance path of a cutting object, and a power portion. A rotary blade holding portion that transmits the power of the rotary blade to rotatably hold the rotary blade, and a blade portion of the fixed blade is positioned at a slight angle from a parallel position with respect to the blade portion of the rotary blade. A fixed blade holding portion for holding the fixed blade so that the blade portion of the rotary blade and the blade portion of the fixed blade are meshed, and the meshing position can be moved as the rotary blade rotates. The fixed blade holding portion includes a partial cutting position where an end point of a meshing position between the blade portion of the rotary blade and the blade portion of the fixed blade is on the cutting object, the blade portion of the rotary blade, and the The end point of the meshing position with the blade part of the fixed blade is all cut by meshing the object to be cut. On the ability of the entire cutting position, it is possible to change the holding position of the fixed blade.

  6. A printing apparatus according to an embodiment cuts a printing unit that performs printing, a power unit that generates power, and a cutting object printed by the printing unit using power transmitted from the power unit. A rotary cutter device according to any one of the above.

FIG. 1 is a cross-sectional view of a main part of a receipt printer using the rotary cutter device of the embodiment. FIG. 2 is a perspective view of the rotary cutter device viewed from the downstream side of the sheet conveyance path during full cutting (full cutting). FIG. 3 is an external perspective view showing the support member. FIG. 4 is a perspective view of the rotary cutter device at the time of stub cutting (partial cutting) as seen from the downstream side of the sheet conveyance path.

  This embodiment will be described with reference to FIGS. FIG. 1 is a cross-sectional view of a main part of a receipt printer 1 using a rotary cutter device 14 of the present embodiment. A receipt printer 1 shown in FIG. 1 is a printer that prints on a receipt used in a POS (Point Of Sales) terminal or the like.

  As shown in FIG. 1, a receipt printer 1 serving as a printing apparatus has a pair of paper guides 3 and 4 arranged toward a paper insertion slot 2 for inserting a receipt paper, and is fixedly attached to a main frame (not shown). Yes. These opposing paper guides 3 and 4 form a paper transport path 5. The sheet conveyance path 5 communicates with the printing unit 6.

  The printing unit 6 includes a thermal head 8 attached to a bracket 7 pivotally supported on the main frame so as to be openable and closable, a platen roller 9 provided downstream of a paper conveyance path 5 formed by paper guides 3 and 4, a main frame A spring 11 is attached to a push plate 10 that is pivotally supported on the thermal head 8 and presses the thermal head 8 against the platen roller 9. The platen roller 9 is driven by a transport motor 13 via a platen roller gear 9a and an idler gear 12.

  The receipt printer 1 includes a rotary cutter device 14 that cuts the receipt paper printed by the printing unit 6. The receipt printer 1 includes a pair of opposed paper guides 16, 17 and a paper conveyance path 15 that guides the receipt paper printed by the printing unit 6 to the rotary cutter device 14 and further guides the receipt paper to a receipt discharge port (not shown). It is formed by a paper guide 18 disposed on the downstream side of the rotary cutter device 14.

  Here, the paper guide 16 located below is fixedly attached to the main frame, but the paper guide 17 located above is rotated around the bracket 7 via a mounting portion 17a protruding above the rear end. The jam detection unit is formed together with the microswitch 19 that is mounted so as to be movable and detects this rotation.

  Here, FIG. 2 is a perspective view of the rotary cutter device 14 viewed from the downstream side of the sheet conveying path 5 at the time of full cutting (full cutting). As shown in FIG. 1 or FIG. 2, the rotary cutter device 14 includes a flat rectangular fixed blade 20 and a rotary blade 21 having blade portions 20a and 21a formed on one side edge, respectively. The blade 20 and the rotary blade 21 are disposed with the blade portions 20a and 21a facing each other with the paper conveyance path 15 interposed therebetween.

  As shown in FIG. 1 or FIG. 2, the rotary blade 21 is rotatably held by the rotary blade holding portion 34 by receiving power from a cutter motor 28 that functions as a power portion that generates power.

  As shown in FIG. 2, the rotary blade holding portion 34 has both side walls 23 a and 23 b of the frame 23 via a shaft 22 provided on one side (position shifted from the center in the short direction) with the rotary blade 21 on both sides in the longitudinal direction. The other end side is a swing end that swings about the shaft 22. The rotary blade 21 has a blade portion 21a on the ridge of the upper corner in FIG.

  Further, the rotary blade 21 has a shaft 24 parallel to the shaft 22 attached to the surface on which the shaft 22 of the swing end is provided, and the blade portion 21a is provided with the swing end side facing the upstream side. 2 is disposed along the lower surface of the sheet conveyance path 15 in FIG. Further, as shown in FIG. 2, the blade portion 21a of the rotary blade 21 is slightly slidably in contact with the blade portion 20a of the fixed blade 20 sequentially from the shaft 24 side when the rotary blade 21 rotates about the shaft 22. It is attached with an inclination.

  And the rotary blade holding | maintenance part 34 is equipped with the cutter lever 25 as a rotation means in the side in which the axis | shafts 22 and 24 of the rotary blade 21 are provided. The cutter lever 25 is formed in a substantially L shape including a short rod 25a and a long rod 25b. Further, the cutter lever 25 has a bent piece 25c in which a part of a connecting corner portion of the short rod 25a and the long rod 25b is bent in a U-shape. A through hole 26b is formed at the tip of the short rod 25a, and through holes 26a and 26c formed as the same axis are formed at the corner and the bent piece 25c. A shaft 22 and a shaft 24 provided on the rotary blade 21 are inserted into the through hole 26b and the through holes 26a and 26c, respectively.

  Further, the cutter lever 25 has a long hole 27 at the end of the long rod 25b. As shown in FIG. 1, an eccentric shaft 30 provided in a gear 29 driven by a cutter motor 28 is loosely fitted in the long hole 27.

  On the other hand, as shown in FIG. 1 or FIG. 2, the fixed blade 20 is held by the fixed blade holding portion 35 so that the meshing position can be moved as the rotary blade 21 rotates.

  As shown in FIG. 2, the fixed blade holding portion 35 is a frame different from the frame 23 via a support shaft 31 provided with the fixed blade 20 on one side of the both sides in the longitudinal direction (position shifted from the center in the short direction). The support member 50 is provided on the side wall 40a of the 40 and the through-hole 60 is provided on the side wall 40b. The support shaft 31 of the fixed blade 20 and the support shaft 22 of the rotary blade 21 are positioned slightly inclined from the parallel position. As shown in FIG. 2, the fixed blade 20 has the blade portion 20 a described above on the corner ridge side on the side opposite to the side where the support shaft 31 is provided and on the rotary blade 21 side. Further, the fixed blade 20 has a guide surface 20b as a surface on which the blade portion 20a is provided.

  Furthermore, the fixed blade 20 includes a guide portion 20c for guiding the blade portion 21a of the rotary blade 21 to a meshing position with the blade portion 20a of the fixed blade 20. More specifically, the guide portion 20c of the fixed blade 20 protrudes continuously from the blade portion 20a at a position deviated from the blade portion 20a of the fixed blade 20.

  The support shaft 31 of the fixed blade 20 on the side wall 40 b side of the frame 40 is provided with a coil spring 41 that is an urging member that urges the fixed blade 20 against the rotary blade 21. The coil spring 41 connects the fixed blade 20 and the frame 40, and is sandwiched between the fixed blade 20 and the side wall 40 b, and the direction of the force transmitted to the fixed blade 20 by the rotation of the rotary blade 21. Has a reaction force in the opposite direction.

  The support member 50 is provided to selectively support the support shaft 31 positioned on the side wall 40a side of the frame 40 at two points with different distances from the side wall 40a. The support member 50 may change the support position between two points having different distances from the side wall 40a of the frame 40 by sliding on a rail (not shown) disposed on the side wall 40a of the frame 40, for example. In addition, the support position of the two points having different distances from the side wall 40a on the side wall 40a of the frame 40 can be selectively changed, and the support position is changed according to the position. It may be.

  Here, FIG. 3 is an external perspective view showing the support member 50. As shown in FIG. 3, the support member 50 has an inclined surface 51 formed so as to be inclined so that the distance from the side wall 40 b is gradually different in a state of being disposed on the side wall 40 a of the frame 40. The support member 50 has a concave first support portion 53a on the inclined surface 51 serving as a support position for the support shaft 31 whose distance from the side wall 40a is long, and a support shaft whose distance from the side wall 40a is short. The inclined surface 51 has a concave second support portion 53 b that serves as a support position of 31. The difference in the distance from the side wall 40a between the first support portion 53a and the second support portion 53b is the same as the uncut dimension X described later. In addition, the support member 50 includes a groove-shaped groove portion 52 on the inclined surface 51 serving as a movement path of the support shaft 31 between the first support portion 53a and the second support portion 53b.

  With such a configuration, in the rotary cutter device 14, the shaft 24 is swung by the cutter lever 25 transmitted through the eccentric shaft 30 provided in the gear 29, so that the rotary blade 21 is moved. It rotates around the shaft 22. As the rotary blade 21 rotates, the fixed blade 20 is pushed and rotated in one direction. At this time, the coil is attached to the support shaft 31 of the fixed blade 20 and connects the fixed blade 20 and the frame 40. Due to the restoring force of the spring 41, the fixed blade 20 has a reaction force in the direction opposite to the rotating direction. Further, since the support shaft 31 of the fixed blade 20 and the support shaft 22 of the rotary blade 21 are positioned slightly inclined from the parallel position, the sheet conveyance path 5 between the fixed blade 20 and the rotary blade 21 is V. It is formed in a letter shape. That is, the rotation of the rotary blade 21 and the reaction force of the fixed blade 20 cause the V-shaped paper conveyance path 5 to gradually move while the blade portion 20a of the fixed blade 20 and the blade portion 21a of the rotary blade 21 are in sliding contact. Thus, the respective blade portions 20a and 21a mesh with each other like a scissors, and the receipt paper 32 that is a cutting object interposed between the both blade portions 20a and 21a can be cut, that is, cut.

  A case where the receipt paper 32 is fully cut (all cut) in such a configuration will be described. When the receipt paper 32 is fully cut (totally cut), as shown in FIG. 2, the rotary cutter device 14 projects the support shaft 31 of the stationary blade 20 on the side wall 40 b side from the through hole 60 while compressing the coil spring 41. The supporting member 50 is set in a state where the supporting member 50 is positioned so that the supporting shaft 31 located on the side wall 40a side is fitted to the first supporting portion 53a.

  In the receipt printer 1 in which the rotary cutter device 14 is in the state shown in FIG. 2 (full cut (full cut) state), when the receipt paper 32 is inserted into the paper conveyance path 5 from the paper insertion opening 2, the receipt paper 32 is moved to the platen roller. Predetermined printing is performed while being sequentially conveyed under the thermal head 8 according to the rotation of 9, and passes between the blade portion 20 a and the blade portion 21 a formed by the fixed blade 20 and the rotary blade 21, Guided by the surface 21b that also serves as a guide for the rotary blade 21 and the paper guide 18, it is guided to the receipt issuing port.

  Then, when the printed portion, that is, the receipt is exposed from the receipt issuing port, the cutter motor 28 is started, the gear 29 rotates in the direction of the arrow shown in FIG. 1, and the eccentric shaft 30 attached to the gear 29 is moved. Since it moves circularly while sliding in the long hole 27, the short rod 25a of the cutter lever 25 attached to the rotary blade 21 that rotates in the direction of the arrow with the shaft 22 as a fulcrum rotates with the shaft 22 as a fulcrum. The rotary blade 21 also rotates together with the cutter lever 25. At this time, since the blade portion 21a is inclined and attached as described above, the blade portion 21a sequentially contacts the blade portion 20a of the fixed blade 20 from the support member 50 side, and the receipt paper 32 is simultaneously supported by the support member. Cutting proceeds sequentially from the 50 side toward the frame 23b side, and the end point of the engagement position between the blade portion 21a of the rotary blade 21 and the blade portion 20a of the fixed blade 20 can be cut entirely by engaging the width dimension W of the receipt paper 32. When it reaches the full cutting position, it is cut to the end, that is, it is fully cut and a receipt is issued.

  Next, a case where the receipt paper 32 is stub cut (partially cut) will be described. When the receipt paper 32 is stub cut (partially cut), as shown in FIG. 4, in the rotary cutter device 14, the support shaft 31 positioned on the side wall 40 a side is supported so as to fit into the second support portion 53 b. The member 50 is set.

  In the receipt printer 1 in which the rotary cutter device 14 is in the state shown in FIG. 4, the tip end position of the support shaft 31 is closer to the side wall 40b than in the case where the rotary cutter device 14 is in the state shown in FIG. The fixed blade 20 moves to the side wall 40b side by an amount corresponding to an uncut size by partial cutting on the receipt paper 32. In the present embodiment, the fixed blade 20 moves inward by “X” from the conveyance path range of the receipt paper 32. As a result, in the receipt printer 1 in which the rotary cutter device 14 is in the state shown in FIG. 4, the blade portion 21 a of the rotary blade 21 sequentially comes into sliding contact with the blade portion 20 a of the fixed blade 20 from the support member 50 side. At the same time, even if the cutting progresses sequentially from the support member 50 side toward the frame 23b side and cuts to the end, the end point of the meshing position between the blade portion 21a of the rotary blade 21 and the blade portion 20a of the fixed blade 20 is the receipt paper 32 4, the cutting travel distance of the rotary blade 21 becomes less than the width dimension W of the receipt paper 32 by the uncut dimension X as shown in FIG. A stub cut receipt is issued leaving the dimension X.

  That is, in the rotary cutter device 14 of the receipt printer 1 of the present embodiment, when the user wants to perform stub cutting, the support shaft 31 located on the side wall 40a side is fitted to the second support portion 53b. By setting the support member 50 on the stub, the stub cut can be performed.

  As described above, according to the present embodiment, the blade portion 20a of the fixed blade 20 is positioned at a slight angle from the parallel position with respect to the blade portion 21a of the rotary blade 21, and is fixed to the blade portion 21a of the rotary blade 21. The fixed blade holding portion 35 that holds the fixed blade 20 so as to mesh with the blade portion 20 a of the blade 20 and move the meshing position with the rotation of the rotary blade 21 is the blade portion 21 a of the rotary blade 21. The end position of the engagement position between the blade 20a of the fixed blade 20 and the blade portion 20a of the fixed blade 20 is the partial cutting position on the receipt paper 32, and the end point of the engagement position of the blade portion 21a of the rotary blade 21 and the blade portion 20a of the fixed blade 20 is receipt paper. Since the holding position of the fixed blade 20 can be changed to the full cutting position where all the 32 can be cut by meshing, switching between the stub cut and the full cut by the rotary cutter device 14 of the receipt printer 1 is possible. It can be simplified.

  In addition, in this embodiment, although the fixed blade 20 and the rotary blade 21 were formed in the flat rectangular shape, it is not restricted to this, For example, as a semicircle shape or a column shape, the linear blade part which follows the axial direction to the surrounding surface It is good also as the shape which formed.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Printing apparatus 5 Conveyance path 6 Printing part 14 Rotary cutter apparatus 20 Fixed blade 20a Fixed blade edge part 21 Rotary blade 21a Rotary blade edge part 28 Power part 31 Fixed blade spindle 32 Cutting target 34 Rotary blade holding part 35 Fixed blade holding part 40 Frame 41 Energizing member 50 Support member 52 Groove part 53a First support part 53b Second support part 60 Through hole

JP-A-10-118979

Claims (6)

A rotary blade having a blade portion;
A fixed blade that has a blade portion and is disposed to face the rotating blade via a conveyance path of a cutting object;
A rotary blade holding unit that transmits power from the power unit and rotatably holds the rotary blade;
The blade portion of the fixed blade is positioned at a slight angle from the parallel position with respect to the blade portion of the rotary blade so that the blade portion of the rotary blade and the blade portion of the fixed blade are engaged, and the rotation A fixed blade holding portion for holding the fixed blade so that the meshing position can be moved with the rotation of the blade;
With
The fixed blade holding portion includes a partial cutting position where an end point of a meshing position between the blade portion of the rotary blade and the blade portion of the fixed blade is on the object to be cut, and the blade portion of the rotary blade and the fixed blade. The holding position of the fixed blade can be changed to the entire cutting position at which the end point of the meshing position with the blade part can be cut by meshing the object to be cut.
A rotary cutter device. The fixed blade holding part is
Frame,
The supporting shaft provided on the frame and provided on one end of the blade of the fixed blade is selectively selected at two points where the distance from the frame differs by an uncut size by partial cutting on the cutting object. A support member capable of supporting;
A through hole that is provided in the frame and passes through a support shaft provided at the other end of the blade portion of the fixed blade;
It is provided on the support shaft on the through-hole side, connects the fixed blade and the frame, and is sandwiched between the fixed blade and the frame, and is transmitted to the fixed blade by the rotation of the rotary blade. A biasing member having a reaction force in a direction opposite to the direction of the force to be
With
The rotary cutter device according to claim 1. The support member is slidably provided on the frame, and is supported between two points whose distance from the frame is different by an uncut size due to partial cutting on the cutting object by sliding movement on the frame. Change the position,
The rotary cutter device according to claim 2. The support member includes a concave first support portion and a concave second support portion, the distance from the frame being two points different from each other by an uncut size by partial cutting on the cutting object, A groove-shaped groove portion serving as a movement path of the support shaft of the fixed blade between the first support portion and the second support portion;
The rotary cutter device according to claim 3. The support member is disposed on the frame so that the distance from the frame can be selectively changed at two points where the distance from the frame differs by an uncut size by partial cutting on the cutting object.
The rotary cutter device according to claim 2. A printing unit for performing printing;
A power unit for generating power,
The rotary cutter device according to any one of claims 1 to 5, wherein the cutting object printed by the printing unit is cut by power transmitted from the power unit;
A printing apparatus comprising:

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