JP7069554B2 - Cutting mechanism - Google Patents

Description

The present invention relates to, for example, a cutting mechanism included in a recording device such as a printer.

As an example of a recording device, there is a printer provided with a cutting mechanism for cutting a medium on which an image such as a character or a photograph is recorded into a desired size. Patent Document 1 describes, as an example of a cutting mechanism, a cutting device that cuts roll paper by moving a cutter unit having a rotary blade along a guide rail.

Japanese Unexamined Patent Publication No. 2016-55379

In the cutting device described in Patent Document 1, for example, depending on how the cutter unit and the guide rail are attached, the cutter unit may rattle when moving along the guide rail. If the cutter unit rattles, there is a risk that the medium cannot be cut accurately.

An object of the present invention is to provide a cutting mechanism capable of cutting a medium with high accuracy.

Hereinafter, means for solving the above problems and their actions and effects will be described.
A cutting mechanism that solves the above problems includes a cutter blade capable of cutting a medium, a cutter unit to which the cutter blade is attached, and a guide rail that supports the cutter unit, and the cutter unit is along the guide rail. By moving in the traveling direction, the cutter blade is configured to cut the medium, and the cutter unit has a first holding portion and a second holding portion that come into contact with the guide rail so as to be held by the guide rail. The first holding portion and the second holding portion are arranged so as to sandwich the cutter blade in the traveling direction.

When the cutter unit moves in the traveling direction to cut the medium, a moment is generated in the cutter unit to rotate the cutter unit with the cutting position of the medium by the cutter blade as a fulcrum. According to the above configuration, since the first holding portion and the second holding portion are arranged so as to sandwich the cutter blade, it is possible to reduce the rattling of the cutter unit due to the attempt to rotate with the cutting position as a fulcrum. Therefore, the medium can be cut accurately.

In the cutting mechanism, it is preferable that the first holding portion and the second holding portion are arranged so as to sandwich the guide rail.
According to this configuration, since the first holding portion and the second holding portion are arranged so as to sandwich the guide rail, rattling of the cutter unit can be reduced.

In the cutting mechanism, the first holding portion is arranged behind the cutter blade in the traveling direction, and the distance between the first holding portion and the cutter blade in the traveling direction is the first in the traveling direction. 2 It is preferable that the structure is set so as to be larger than the distance between the holding portion and the cutter blade.

According to this configuration, since the first holding portion is arranged at a position farther from the second holding portion than the second holding portion in the traveling direction, the rattling of the cutter unit can be further reduced.

In the cutting mechanism, the guide rail is composed of rack gears, the cutter unit has a drive gear arranged so as to mesh with the rack gears, and the drive gears move the cutter unit in the traveling direction. At that time, it is preferable that the cutter blade is rotated by meshing with the rack gear, and the cutter blade is configured to rotate by rotating the drive gear when the cutter unit moves in the traveling direction.

According to this configuration, the medium can be easily cut by rotating the cutter blade.
In the cutting mechanism, it is preferable that the first holding portion is composed of a pinion gear that can mesh with the rack gear.

According to this configuration, since the pinion gear, which is the first holding portion, meshes with the rack gear, rattling of the cutter unit can be reduced as compared with the case where the first holding portion is, for example, a roller.

A side view schematically showing an internal structure of an embodiment of a recording device including a cutting mechanism. Perspective view of the cutting mechanism. Front view of the cutting mechanism. Side view of the cutting mechanism. Sectional drawing of the cutting mechanism.

Hereinafter, an embodiment of a recording device including a cutting mechanism will be described with reference to the drawings.
As shown in FIG. 1, the recording device 11 has a rectangular parallelepiped housing 12. The recording device 11 includes a recording unit 20 for recording images such as characters and photographs on the medium S, and a first support member 31 and a second support member 32 for supporting the medium S in the housing 12. The recording device 11 includes a transport unit 40 for transporting the medium S and a cutting mechanism 50 for cutting the medium S recorded by the recording unit 20 in the housing 12. That is, the recording unit 20, the first and second support members 31, 32, the transport unit 40, and the cutting mechanism 50 are housed in the housing 12.

In the housing 12, for example, a roll body R in which a medium S, which is paper, is wound in a roll shape is arranged. The roll body R is arranged rearward in the housing 12 on the right side in FIG. The roll body R is rotatably supported by a shaft 13 provided so as to extend in the width direction X of the medium S. In the present embodiment, the medium S is unwound from the roll body R by rotating the shaft 13 in the counterclockwise direction in FIG. The unwound medium S is conveyed by the transport unit 40, and is discharged from the inside of the housing 12 to the outside of the housing 12 through the discharge port 15 opened in the front surface 14 of the housing 12. That is, in the present embodiment, the direction from the rear to the front of the housing 12 and the direction from the right to the left in FIG. 2 are the transport directions Y of the medium S transported by the transport unit 40. The front surface 14 of the housing 12 is a surface having an extension in the vertical direction Z and the width direction X.

The recording unit 20 has, for example, a head 21 for injecting a liquid such as ink toward the medium S, and a carriage 22 on which the head 21 is mounted. The carriage 22 is supported by a frame 16 provided in the housing 12 and a guide shaft 17 attached to the frame 16. The guide shaft 17 extends in the width direction X of the medium S. The carriage 22 is movable along the guide shaft 17. That is, the carriage 22 is movable in the width direction X. The head 21 is capable of injecting a liquid into the medium S over the entire width direction X by moving the carriage 22 along the guide shaft 17.

The first and second support members 31 and 32 are composed of plate-shaped members. The first support member 31 is arranged on the upstream side of the second support member 32 in the transport direction Y, and guides the medium S unwound from the roll body R toward the recording unit 20. The second support member 32 is arranged so as to face the head 21 of the recording unit 20.

The transport unit 40 transports the medium S unwound from the roll body R from the inside of the housing 12 toward the discharge port 15 along the first and second support members 31 and 32. The transport unit 40 has a first transport roller pair 41, a second transport roller pair 42, a third transport roller pair 43, and a fourth transport roller pair 44 in order from the upstream side to the downstream side in the transport direction Y. ing. The first transport roller pair 41 is arranged on the upstream side of the head 21 in the transport direction Y, and is arranged at a position between the first support member 31 and the second support member 32. The second, third, and fourth transport roller pairs 42, 43, and 44 are arranged on the downstream side of the head 21 in the transport direction Y.

The first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 have a drive roller 45 that can be driven and rotated by a motor (not shown), and can be driven to rotate with respect to the rotation of the drive roller 45. It has a driven roller 46. The first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 transport the medium S by rotating with the medium S sandwiched between the drive roller 45 and the driven roller 46. The drive roller 45 is arranged so as to come into contact with the medium S from below. The driven roller 46 is arranged so as to come into contact with the medium S from above. That is, the driven rollers 46 in the second, third, and fourth transport roller pairs 42, 43, and 44 come into contact with the surface on which the liquid is sprayed with respect to the medium S when the medium S is conveyed. Therefore, the driven rollers 46 in the second, third, and fourth transport roller pairs 42, 43, and 44 have a small contact area with respect to the medium S in order to reduce deterioration in the quality of the image recorded on the medium S. It is composed of wheels and the like. A plurality of first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 are arranged at predetermined intervals in the width direction X.

The cutting mechanism 50 is arranged between the third transport roller pair 43 and the fourth transport roller pair 44 in the transport direction Y. The medium S cut by the cutting mechanism 50 is discharged from the discharge port 15 by being transported by the fourth transport roller pair 44. The recording device 11 in the present embodiment is configured such that the interval in the vertical direction Z at the opening of the discharge port 15 is relatively small so that the user cannot insert his / her hand into the housing 12 from the discharge port 15. There is.

The recording device 11 in the present embodiment is usually used in a state of being installed on a horizontally spreading floor surface. The housing 12 of the recording device 11 is provided so that the front surface 14 thereof intersects with the floor surface and is ideally orthogonal to each other in a rectangular parallelepiped shape. At this time, considering an orthogonal coordinate system consisting of three axes of X-axis, Y-axis, and Z-axis, the floor surface on which the recording device 11 is installed is a plane consisting of X-axis and Y-axis, and the front surface 14 of the housing 12 is X. The coordinate system is taken so as to be a plane consisting of an axis and a Z axis. Then, the width direction X coincides with the direction in which the X axis extends, the transport direction Y coincides with the direction in which the Y axis extends, and the vertical direction Z coincides with the direction in which the Z axis extends. The X-axis extending in the width direction X, the Y-axis extending in the transport direction Y, and the Z-axis extending in the vertical direction Z are orthogonal to each other. That is, in the present embodiment, the width direction X, the transport direction Y, and the vertical direction Z each indicate three different directions.

Next, the cutting mechanism 50 will be described.
As shown in FIG. 2, the cutting mechanism 50 has a cutter blade 51 for cutting the medium S, a cutter unit 70 to which the cutter blade 51 is attached, and a guide frame 60 for supporting the cutter unit 70. .. The guide frame 60 extends in the width direction X so as to be longer than the roll body R to which the recording device 11 can be loaded. That is, the longitudinal direction of the guide frame 60 coincides with the width direction X. The cutter unit 70 is capable of reciprocating along the guide frame 60. The cutting mechanism 50 cuts the medium S by the cutter blade 51 as the cutter unit 70 moves along the guide frame 60. For convenience of explanation, in the width direction X, the left side in FIG. 2 is the + X side, and the right side opposite to the + X side is the −X side. In the present embodiment, as shown in FIG. 2, in the guide frame 60, the end portion on the + X side of the width direction X is the home position HP of the cutter unit 70.

The guide frame 60 is formed by bending a sheet metal. The guide frame 60 is formed so as to form a claw shape when viewed from the width direction X. The guide frame 60 has a bottom wall 61, and a front wall 62 and a rear wall 63 that bend and extend upward from the bottom wall 61. The front wall 62 is located downstream of the rear wall 63 in the transport direction Y, and extends from the bottom wall 61 so as to be shorter than the rear wall 63 in the vertical direction Z.

The guide frame 60 has a rack gear 64 extending in the width direction X. The rack gear 64 is attached to the rear wall 63 of the guide frame 60 on a surface on the downstream side in the transport direction Y. The rack gear 64 is arranged along the upper edge of the rear wall 63, and is provided so that the length in the width direction X is slightly shorter than that of the guide frame 60. The rack gear 64 has teeth 65 in the lower portion thereof over the width direction X. The rack gear 64 has a groove 66 in the upper portion thereof for guiding the movement of the cutter unit 70 over the width direction X.

As shown in FIGS. 2 and 3, the cutter unit 70 has a holding body 71 that holds the cutter blade 51 and a moving body 72 that is held by the guide frame 60. The cutter unit 70 shown in FIGS. 2 and 3 is located at the home position HP. The holding body 71 and the moving body 72 are fixed to each other so that they can be handled integrally. The holding body 71 and the moving body 72 are fixed so as to partially overlap each other when viewed from the transport direction Y. More specifically, the holding body 71 and the moving body 72 are arranged so that the lower portion of the holding body 71 and the upper portion of the moving body 72 overlap each other in the vertical direction Z.

The holding body 71 is attached to the surface of the moving body 72 on the downstream side in the transport direction Y. The holding body 71 has a medium passage 73 extending in the width direction X at a position above the moving body 72 in the vertical direction Z. The medium passage 73 is a passage for the medium S to pass through the holding body 71 when the cutter unit 70 moves in the width direction X along the guide frame 60. The portion of the medium passage 73 on the −X side in the width direction X is an introduction port 74 for introducing the medium S into the medium passage 73. The introduction port 74 is configured so that the opening in the vertical direction Z gradually increases from the + X side to the −X side in the width direction X in order to facilitate the introduction of the medium S into the medium passage 73.

The holding body 71 holds the cutter blade 51 at a position in the middle of the medium passage 73. That is, the medium passage 73 guides the medium S toward the cutter blade 51 when the cutter unit 70 moves in the width direction X. The cutter blade 51 is arranged on the + X side of the introduction port 74 in the width direction X, and is located adjacent to the introduction port 74. The cutter blade 51 is composed of a disk-shaped drive blade 52 and a driven blade 53. The drive blade 52 and the driven blade 53 are rotatably attached to the holding body 71. The drive blade 52 and the driven blade 53 are provided so as to be lined up in the vertical direction Z, and are arranged so as to sandwich the medium passage 73. The drive blade 52 is located below the driven blade 53 in the vertical direction Z, and is located downstream of the driven blade 53 in the transport direction Y.

The cutter blade 51 is held by the holding body 71 in a state where the cutting edge that is the upper portion of the driving blade 52 and the cutting edge that is the lower portion of the driven blade 53 overlap each other when viewed from the transport direction Y. The cutting edge of the driving blade 52 and the cutting edge of the driven blade 53 are in contact with each other at the cutting position Q, which is a position closer to the −X side in the width direction X in the portion where the cutting edges overlap each other. The drive blade 52 in the present embodiment is held by the holding body 71 in a posture in which its rotation axis is tilted by a predetermined angle with respect to the driven blade 53 extending in the transport direction Y. The cutter blade 51 cuts the medium S at the cutting position Q where the cutting edges of the driving blade 52 and the driven blade 53 come into contact with each other as the driving blade 52 and the driven blade 53 rotate. That is, when the cutter unit 70 moves from the + X side to the −X side in the width direction X, the cutting mechanism 50 sandwiches the medium S passing through the medium passage 73 between the rotating drive blade 52 and the driven blade 53. Cut by. In the present embodiment, the direction from the + X side to the −X side in the width direction X is the traveling direction in which the cutter unit 70 advances when the cutter blade 51 cuts the medium S. That is, in the cutter unit 70, the + X side in the width direction X is the rear side in the traveling direction, and the −X side in the width direction X is the front side in the traveling direction. The cutting mechanism 50 in the present embodiment cuts the medium S by moving from the + X side to the −X side in the width direction X, and then moves from the −X side toward the + X side to reach the home position HP. return.

The holding body 71 has a lever 75 on the upper portion thereof for connecting the carriage 22 of the recording unit 20 and the cutter unit 70. The lever 75 is capable of engaging with an engaging portion (not shown) provided on the carriage 22, for example, a claw extending from the carriage 22. That is, by connecting the cutter unit 70 to the carriage 22 via the lever 75, the cutter unit 70 can move in the width direction X with the movement of the carriage 22. The lever 75 is configured to be switchable between an engaged state in which it engages with the engaging portion and a disengaged state in which it does not engage with the engaging portion by an actuator, a motor, or the like. In the present embodiment, for example, when the recording unit 20 records on the medium S, the lever 75 is in the released state, and when the cutting mechanism 50 cuts the medium S, the lever 75 is in the engaged state. When the lever 75 is in the released state, the cutter unit 70 does not move with the movement of the carriage 22, and when the lever 75 is in the engaged state, the cutter unit 70 moves with the movement of the carriage 22.

As shown in FIGS. 3 and 4, the moving body 72 has a first roller 81, a second roller 82, and a third roller 83 arranged so as to sandwich the front wall 62 of the guide frame 60 under the moving body 72. ing. The first and second rollers 81 and 82 are arranged on the front wall 62 so that their peripheral surfaces come into contact with the surface on the downstream side in the transport direction Y. The third roller 83 is arranged on the front wall 62 so that its peripheral surface comes into contact with a surface on the upstream side in the transport direction Y. The first roller 81 is located at the end of the moving body 72 on the + X side in the width direction X, and the second roller 82 is located at the end on the −X side. The third roller 83 is located between the first roller 81 and the second roller 82 in the width direction X. The first, second, and third rollers 81, 82, and 83 rotate due to friction with the front wall 62 when their rotation axes extend in the vertical direction Z and the moving body 72 moves in the width direction X. That is, the first, second, and third rollers 81, 82, and 83 guide the movement of the cutter unit 70 along the front wall 62.

As shown in FIGS. 4 and 5, the moving body 72 has a fourth roller 84 and a fifth roller 85 arranged above the moving body 72 so as to partially fit in the groove 66 of the rack gear 64. The peripheral surfaces of the fourth and fifth rollers 84 and 85 are arranged so as to be in contact with the bottom surface 67 of the groove 66. The fourth roller 84 is located at the end of the moving body 72 on the −X side in the width direction X, and the fifth roller 85 is located at the end on the + X side of the width direction X. That is, in the traveling direction of the cutter unit 70, the fourth roller 84 is located in front of the cutter blade 51, and the fifth roller 85 is located behind the cutter blade 51. The cutter unit 70 in the present embodiment is configured such that the distance between the fifth roller 85 and the cutter blade 51 in the traveling direction is larger than the distance between the fourth roller 84 and the cutter blade 51 in the traveling direction. ..

The fourth roller 84 is located above the second roller 82, and the fifth roller 85 is located above the first roller 81. The fourth and fifth rollers 84 and 85 rotate due to friction with the bottom surface 67 of the groove 66 when the rotation axis extends in the transport direction Y and the moving body 72 moves in the width direction X. That is, the fourth and fifth rollers 84 and 85 guide the movement of the cutter unit 70 along the groove 66 of the rack gear 64. In other words, the cutter unit 70 moves along the rack gear 64. In summary, the first, second, third, fourth and fifth rollers 81, 82, 83, 84 and 85 guide the movement of the cutter unit 70 along the guide frame 60.

The moving body 72 has a first pinion gear 91 and a second pinion gear 92 that can mesh with the teeth 65 of the rack gear 64. That is, the cutter unit 70 has a plurality of pinion gears. The first and second pinion gears 91 and 92 are rotatably attached to the moving body 72. The first and second pinion gears 91 and 92 have teeth 93 and 94 on their peripheral surfaces and are arranged at intervals in the width direction X. The first pinion gear 91 is arranged on the −X side of the second pinion gear 92 in the width direction X. The first pinion gear 91 is located directly below the cutter blade 51. The second pinion gear 92 is located behind the cutter blade 51 in the traveling direction of the cutter unit 70. In the present embodiment, the second pinion gear 92 is arranged so that the distance between the second pinion gear 92 and the cutter blade 51 is larger than the distance between the fourth roller 84 and the cutter blade 51 in the traveling direction of the cutter unit 70. Has been done. The first and second pinion gears 91 and 92 rotate while meshing with the rack gear 64 when the cutter unit 70 moves along the guide frame 60.

As shown in FIG. 5, the cutter unit 70 is attached to the rack gear 64 by the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92 sandwiching the rack gear 64 in the vertical direction Z. .. That is, in the present embodiment, the rack gear 64 functions as a guide rail that supports the cutter unit 70. In the present embodiment, the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92 function as holding portions that come into contact with the rack gear 64 so that the cutter unit 70 is held by the rack gear 64. It can be said that the cutter unit 70 is held by the rack gear 64 via the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92.

The cutter unit 70 has a transmission gear (not shown) that transmits the rotation of the first pinion gear 91 to the drive blade 52. That is, the cutter unit 70 is configured so that the drive blade 52 rotates with the rotation of the first pinion gear 91 when the cutter unit 70 moves in the width direction X along the guide frame 60. In the present embodiment, the first pinion gear 91 functions as a drive gear for rotating the drive blade 52. In FIG. 3 of the present embodiment, when the cutter unit 70 moves from the + X side to the −X side in the width direction X, that is, when it moves in the traveling direction, the drive blade 52 rotates in the counterclockwise direction. It is configured in. The driven blade 53 rotates driven by the rotation of the drive blade 52 when the blade edge comes into contact with the blade edge of the drive blade 52.

Next, the operation of the cutting mechanism 50 included in the recording device 11 configured as described above will be described.
As shown in FIG. 5, when the cutting mechanism 50 cuts the medium S, the cutter unit 70 moves from the + X side to the −X side in the width direction X as the carriage 22 connected by the lever 75 moves. That is, it moves in the direction of travel. The cutter unit 70 cuts the medium S by the cutter blade 51 by moving in the traveling direction along the rack gear 64. At this time, a force from the + X side to the −X side in the width direction X is applied to the lever 75 located above the holding body 71 from the carriage 22 of the recording unit 20 to the cutter unit 70. Therefore, when cutting the medium S, a moment may be generated around the fulcrum of the cutter unit 70 with the lever 75 as a power point and the cutting position Q where the cutter blade 51 and the medium S come into contact as a fulcrum. When a moment is generated around the cutting position Q, the cutter unit 70 tries to rotate around the cutting position Q as a fulcrum in the traveling direction. This may cause the cutter unit 70 to rattle with respect to the rack gear 64. In this respect, the cutting mechanism 50 in the present embodiment includes a first holding portion and a second holding portion for reducing the rattling of the cutter unit 70.

When the cutter unit 70 moves in the traveling direction in order to cut the medium S, the cutter unit 70 tries to rotate in the counterclockwise direction in FIG. 5 with the cutting position Q as a fulcrum. That is, the cutter unit 70 tries to rotate so that the front portion in the traveling direction moves downward and the rear portion in the traveling direction moves upward. At this time, the second pinion gear 92 is strongly pressed against the rack gear 64 from below, and the fourth roller 84 is strongly pressed against the rack gear 64 from above. That is, the second pinion gear 92 and the fourth roller 84 hold the cutter unit 70 in the rack gear 64 so as to suppress the rotation of the cutter unit 70. Therefore, in the present embodiment, the second pinion gear 92 functions as the first holding portion, and the fourth roller 84 functions as the second holding portion. In summary, the rattling of the cutter unit 70 is reduced by the first holding portion and the second holding portion arranged so as to sandwich the cutter blade 51 in the traveling direction.

According to the above embodiment, the following effects can be obtained.
(1) When the cutter unit 70 moves in the traveling direction to cut the medium S, a moment is generated in the cutter unit 70 to rotate the cutter unit 70 with the cutting position Q of the medium S by the cutter blade 51 as a fulcrum. In this respect, in the cutting mechanism 50, the second pinion gear (first holding portion) 92 and the fourth roller (second holding portion) 84 are arranged with the cutter blade 51 interposed therebetween. Therefore, it is possible to reduce the rattling of the cutter unit 70 due to the attempt to rotate with the cutting position Q as a fulcrum. Therefore, the medium S can be cut accurately.

(2) Since the second pinion gear (first holding portion) 92 and the fourth roller (second holding portion) 84 are arranged so as to sandwich the rack gear (guide rail) 64, rattling of the cutter unit 70 can be reduced. ..

(3) In the traveling direction of the cutter unit 70, the second pinion gear (first holding portion) 92 is arranged at a position farther from the cutter blade 51 than the fourth roller (second holding portion) 84. .. Therefore, the rattling of the cutter unit 70 can be further reduced. That is, the cutting mechanism 50 effectively reduces the rotation of the cutter unit 70 with the cutting position Q as a fulcrum by increasing the distance between the cutting position Q and the fourth roller (second holding portion) 84 in the traveling direction. do.

(4) The cutter blade 51 is configured to rotate by rotating the first pinion gear (drive gear) 91 when the cutter unit 70 moves in the traveling direction. Therefore, the rotation of the cutter blade 51 makes it easier to cut the medium S.

(5) Since the first pinion gear 91, which is the first holding portion, meshes with the rack gear 64, rattling of the cutter unit 70 can be reduced as compared with the case where the first holding portion is, for example, a roller.

(6) The first holding portion is provided as a pinion gear (second pinion gear 92). Further, a plurality of pinion gears including the first pinion gear 91 and the second pinion gear 92 are meshed with the rack gear 64. As a result, when the cutter unit 70 moves along the rack gear 64, the risk of tooth skipping of the first pinion gear 91 with respect to the rack gear 64 can be reduced. By reducing the tooth skipping of the first pinion gear 91, the cutter blade 51 rotates at a constant cycle, so that the medium S can be cut with high accuracy.

(7) The cutting mechanism 50 has a first pinion gear 91 and a fifth roller 85. Therefore, even when the cutter unit 70 rotates in the clockwise direction in FIG. 5 with the cutting position Q as a fulcrum, the rattling can be reduced.

The above embodiment may be changed as follows. Moreover, the following modification examples may be combined as appropriate.
-The first holding portion may be, for example, a roller. In this case, the rack gear 64 preferably has a groove instead of the tooth 65.

-The guide rail is not limited to the rack gear 64, and may be a simple rail. In this case, the first pinion gear 91 and the second pinion gear 92 are preferably rollers.
-The cutter blade 51 is not limited to a rotating configuration, and may be a fixed blade. In this case, the first pinion gear 91 does not have to transmit the driving force for rotation to the cutter blade 51. That is, the drive gear may not be provided.

The drive blade 52 may be configured to be rotated by a motor or the like. In this case, the first pinion gear 91 does not have to transmit the driving force for rotation to the cutter blade 51. That is, the drive gear may not be provided.

In the transport direction Y, the distance between the second pinion gear 92 functioning as the first holding portion and the cutter blade 51 may be the same as the distance between the fourth roller 84 functioning as the second holding portion and the cutter blade 51. It may be small.

-The fifth roller 85 may not be provided.
-The cutter unit 70 may be configured to be separately moved by a drive source such as a motor. Even in such a case, there is a considerable possibility that the cutter unit 70 will rattle.

The recording device 11 includes fluids other than ink (including liquids, liquids in which particles of functional materials are dispersed or mixed in liquids, flowing bodies such as gels, and solids that can be flowed and ejected as fluids). It may be a fluid injection device that performs recording by injecting or discharging. For example, recording is performed by injecting a liquid substance containing a material such as an electrode material or a color material (pixel material) used in the manufacture of a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, etc. in the form of dispersion or dissolution. It may be a liquid crystal injection device. Further, a flowable material injection device that injects a flowable material such as a gel (for example, a physical gel), and a powder or granular material injection device that injects a solid such as a powder (powder or granular material) such as toner (for example, a toner jet type). It may be a recording device). Then, the present invention can be applied to any one of these fluid injection devices. In the present specification, the term "fluid" means, for example, a liquid (including an inorganic solvent, an organic solvent, a solution, a liquid resin, a liquid metal (metal melt), etc.), a liquid body, a flowable material, and a powder or granular material (grains). Body, including powder), etc. are included.

50 ... cutting mechanism, 51 ... cutter blade, 52 ... drive blade, 53 ... driven blade, 60 ... guide frame, 61 ... bottom wall, 62 ... front wall, 64 ... rack gear (guide rail), 65 ... teeth, 66 ... groove , 67 ... bottom surface, 70 ... cutter unit, 71 ... holding body, 73 ... medium passage, 74 ... introduction port, 75 ... lever, 81 ... first roller, 82 ... second roller, 83 ... third roller, 84 ... first 4 rollers (2nd holding part), 85 ... 5th roller, 91 ... 1st pinion gear (drive gear), 92 ... 2nd pinion gear (1st holding part), 93 ... teeth, 94 ... teeth, HP ... home position, Q ... cutting position, S ... medium, X ... width direction, Y ... transport direction, Z ... vertical direction.

Claims (2)

With a cutter blade that can cut the medium,
The cutter unit to which the cutter blade is attached and
A guide rail for supporting the cutter unit, and
By moving the cutter unit in the traveling direction along the guide rail, the cutter blade is configured to cut the medium.
In order to be held by the guide rail, the cutter unit comes into contact with the first holding portion that comes into contact with the guide rail from below and the guide rail from above, and sandwiches the guide rail with the first holding portion. Has a second holding located in
In the traveling direction, the first holding portion arranged on the rear side and the second holding portion arranged on the front side are arranged so as to sandwich the cutter blade .
The guide rail is composed of rack gears.
The cutter unit has a drive gear arranged to mesh with the rack gear.
The drive gear rotates due to meshing with the rack gear when the cutter unit moves in the traveling direction.
The cutter blade is configured to rotate by rotating the drive gear when the cutter unit moves in the traveling direction.
The first holding portion is a cutting mechanism characterized by being composed of a pinion gear that can mesh with the rack gear . The distance between the first holding portion and the cutter blade in the traveling direction is configured to be larger than the distance between the second holding portion and the cutter blade in the traveling direction. The cutting mechanism according to claim 1.

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